EP2048548A2 - Hammer for a timepiece mechanism, timepiece mechanism, in particular striking mechanism, equipped with it, and timepiece comprising them - Google Patents

Hammer for a timepiece mechanism, timepiece mechanism, in particular striking mechanism, equipped with it, and timepiece comprising them Download PDF

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Publication number
EP2048548A2
EP2048548A2 EP08016192A EP08016192A EP2048548A2 EP 2048548 A2 EP2048548 A2 EP 2048548A2 EP 08016192 A EP08016192 A EP 08016192A EP 08016192 A EP08016192 A EP 08016192A EP 2048548 A2 EP2048548 A2 EP 2048548A2
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EP
European Patent Office
Prior art keywords
hammer
timepiece
stop
parts
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08016192A
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German (de)
French (fr)
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EP2048548B8 (en
EP2048548A3 (en
EP2048548B1 (en
Inventor
Vincent Chritin
Eric Van Lancker
David Candaux
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Richemont International SA
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Richemont International SA
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Publication of EP2048548A2 publication Critical patent/EP2048548A2/en
Publication of EP2048548A3 publication Critical patent/EP2048548A3/en
Application granted granted Critical
Publication of EP2048548B1 publication Critical patent/EP2048548B1/en
Publication of EP2048548B8 publication Critical patent/EP2048548B8/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/06—Details of striking mechanisms, e.g. hammer, fan governor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/026—Hammer driving; hammers; devices with several hammers or sounding bodies; vibrators

Definitions

  • the present invention relates to the field of timepieces and more particularly to a hammer for a clockwork mechanism, such as a striking mechanism. It also aims a clockwork mechanism, including a striking mechanism, equipped with such a hammer. It finally aims a timepiece including such a hammer or such a mechanism.
  • Watchmaking mechanisms that use a hammer are already known, such as reset mechanisms in chronographs and ringer mechanisms.
  • the hammer is a massive metal piece crossed by an axis.
  • the hammer strikes a fixed element capable of being vibrated and, when the fixed element is struck, it begins to vibrate and transmit its vibration to the radiating elements of the timepiece.
  • the fixed element is typically a bell
  • the fixed element is typically a stamp.
  • the stamp is generally a bent wire which extends along the periphery of the middle part of the watch, and which is attached to an element of its case. The hammer oscillates around this axis so as to deviate from the timbre or to approach it to hit it and put it in vibration.
  • FIGS. 7a, 7b and 7c show, in three sequences, the operation of a traditional ringing mechanism of a watch, and highlights its disadvantages.
  • the spout 3, carried by the head 2 located at the front of the hammer 1, is slightly away from the stamp 100, while the tail 4, located at the rear of the hammer 1, is held between two elastic stops 7 and 8.
  • the position of one of these elastic stops 7 is finely adjusted by means of an eccentric 9, which allows to finely adjust the distance of the spout 3 relative to the stamp 100 when the hammer 1 is in the rest position.
  • the other stop 8 exerts a restoring force (arrow 90) to hold the tail 4 against the adjustable stop 7.
  • the hammer 1 is released and rotates in the other direction about its axis 5.
  • the elastic stop 8 brings the tail 4 towards the adjustable elastic stop 7 (arrow 90).
  • the tail 4 hits the adjustable stop 7 (impact 88). Due to its elasticity, this adjustable stop 7 allows the head 2 of the hammer 1 to go beyond its rest position, and allows the spout 3 to hit the stamp 100 (impact 86).
  • the adjustable elastic stop 7 then exerts a restoring force (arrows 92) on the shank 4 and tends to move the spout 3 away from the stamp 100.
  • the hammer 1 is then brought back to the rest position ( figure 7a ), position in which the spout 3 is slightly spaced from the stamp 100. This stabilization of the hammer 1 lasts longer or shorter, depending on the elasticity of the two stops 7, 8 and the fineness of adjustment of the position of the stop adjustable 7.
  • the skilled person may be tempted to reduce the stiffness of the elastic stops 7, 8. But then, the hammer 1 may not be brought back quickly enough to the rest position after its impact on the stamp 100, which may cause a rebound phenomenon. In addition, the rebound phenomenon can be accentuated if the position of the adjustable elastic stop 7 is not adjusted with sufficient precision.
  • An object of the present invention is to provide a hammer for a clockwork mechanism, and a clockwork mechanism, including a striking mechanism equipped with such a hammer, which overcome the disadvantages mentioned above.
  • the invention relates to a clockwork mechanism equipped with a hammer according to the first aspect.
  • the invention relates to a striking mechanism for a timepiece, of the type comprising a fixed element able to vibrate when struck and a movable element able to hit said fixed element, in which the mobile element is a hammer according to the first aspect.
  • the invention relates to a timepiece comprising a hammer according to the first aspect or a mechanism according to the second or third aspect.
  • a timepiece is for example a watch, including a wristwatch, or an alarm clock, or a clock, or a clock.
  • a timepiece such as a watch 60 having a housing having a bottom 61 and a middle part 62, a winding device 63, and a striking mechanism 50.
  • the striking mechanism 50 comprises a stamp 100 which presents itself in the form of a bent wire 110 extending around the perimeter of the middle part 62 and terminated by a heel 112 fixed to an element of the limp, such as for example to said middle part 62, by conventional fixing means such as 114.
  • the striking mechanism 50 also includes a hammer 10. which has a spout 122 adapted to hit the thread 110 of the stamp 100 to vibrate.
  • the hammer 10 comprises a first portion 12 and a second portion 14, which are hinged together by a hinge-type connection 70 cooperating with a return piece 16.
  • the return piece 16 is rigidly attached to the first portion 12 and adapted to pivot with it relative to the second portion 14. It comprises an elastic member 162 which intervenes to oppose this pivoting.
  • the first portion 12 is a solid piece limited by two faces 1202, 1204 substantially parallel to each other and substantially parallel to the bottom 61 of the housing when the hammer 10 is installed in the timepiece 60, the face 1202 being an upper face and the face 1204 being a lower face.
  • the upper faces 1202 and lower 1204 are connected by a lateral face 1205 defining a closed contour.
  • the lateral face 1205 of the first portion 12 comprises, successively, a first substantially straight section 1206 intended to be positioned substantially parallel to the stamp 100 when the hammer 10 is installed in the housing of the timepiece 60, a second section 1207 arcuate and convex, a third section 1208 arcuate and concave, and a fourth section 1209 which will be described later.
  • These sections 1206, 1207, 1208, 1209 are separated on the figure 3 by mixed lines.
  • the first, second and third sections 1206, 1207 and 1208 define a shape substantially similar to that of the front of a monobloc hammer of the prior art (see Figures 7a, 7b, 7c ).
  • the first section 1206 is provided with a spout 122 which is positioned opposite the stamp 100 when the hammer 10 is installed in the timepiece 60 (see FIG. figure 5 ), and which is similar to the spout 3 of a one-piece hammer of the prior art (see Figures 7a, 7b, 7c ).
  • a ring 125 whose inner diameter is determined extends from the fourth section 1209 of the lateral face of the first part 12.
  • the first portion 12 comprises a recess 124 made on the upper face 1202 and intended to receive the return piece 16.
  • a threaded hole 126 In the bottom of this recess 124 are drilled a threaded hole 126 and a smooth hole 128.
  • the bottom of the recess 124 is substantially planar
  • the threaded hole 126 is a through hole
  • the smooth hole 128 is a hole opening into another smooth hole 129 of larger diameter, which in turn opens on the lower face 1204.
  • the second portion 14 is limited by two faces 1402, 1404 substantially parallel to each other and substantially parallel to the bottom 61 of the housing when the hammer 10 is installed in the timepiece 60, the face 1402 being an upper face and the face 1404 being a lower face.
  • the upper faces 1402 and lower 1404 are connected by a lateral face 1405 defining a closed contour.
  • the upper face 1402 of the second portion 14 extends substantially in the extension of the bottom plane of the recess 124 of the first portion 12.
  • the distance between the upper faces 1402 and lower 1404 of the second portion 14 is less than the distance between the upper faces 1202 and lower 1204 of the first part 12. In particular, because of this difference in height between the two parts 12 and 14, it follows that the second part 14 is less massive and less heavy than the first part 12.
  • the lateral face 1405 of the second portion 14 comprises, successively, a first section 1406, a second segment 1407 that is substantially rectilinear, a third segment 1408 having a rectilinear portion followed by a curved and concave portion, and a fourth section 1409 which will be described later.
  • These sections 1406, 1407, 1408, 1409 are separated on the figure 4 by mixed lines.
  • the first, second and third sections 1406, 1407 and 1408 define a shape substantially similar to that of the rear of a one-piece hammer of the prior art.
  • the second section 1407 and the third section 1408 define a shank 142 of the second portion 14 of the hammer 10, similar to the shank 4 of a one-piece hammer of the prior art (see FIG. Figures 7a, 7b, 7c ).
  • the second portion 14 comprises a first smooth through hole 145, intended to receive in rotation a fixed axis 52 of the striking mechanism 50 around which said second portion 14 of the hammer 10 can oscillate (see Figures 6a, 6b, 6c ).
  • the second portion 14 includes a stop 144, intended to limit the displacement of a free end 1620 of an elastic member 162 of the workpiece recall 16 as will be described later with reference to Figures 6a, 6b, 6c .
  • the abutment 144 is in the form of an annular bead disposed in the axial extension of the first through-hole 145.
  • the second portion 14 comprises a drive means 148, for rotating the second portion 14 about the fixed axis 52 of the striking mechanism 50.
  • this means drive 148 is in the form of an obviously adapted to receive a finger (not shown) adapted to cooperate with other drive means (not shown in the figures) of the striking mechanism 50 in a conventional manner.
  • the second portion 14 has a second smooth through hole 146, which opens on one side on the upper face 1402 and on the other side on the lower face 1404 which is here closer to the face 1402.
  • the second part 14 presents locally a reduced height (visible on the figure 2 ), which further accentuates the difference of inertia between the two parts 12, 14.
  • the fourth portion 1209 of the lateral face 1205 of the first portion 12 and the fourth portion 1409 of the lateral face 1405 of the second portion 14 each have two adjacent opposite curvatures disposed between two substantially planar portions.
  • These similar and almost complementary forms allow a displacement, by rolling, two parts 12, 14 relative to each other, this displacement being limited on both sides by said substantially planar portions.
  • the return piece 16 will now be described with reference to the figure 1 . It comprises a body 164 and an elastic member 162 having a free end 1620.
  • the body 164 is preferably rigid. It is intended to be rigidly fixed in the recess 124 of the first part 12. For this purpose, at least a portion of the recess 124 and at least a portion of the body 164 have complementary shapes.
  • the body 164 is provided with a first smooth through hole 1642 and a second smooth through hole 1644.
  • a clamping screw 18 is threaded through said first hole 1642 into the threaded hole 126 of the recess 124 to rigidly secure the body 164 of the return piece 16 to the first part 12.
  • a stabilizing pin 19 passes through said second hole 1644 of the restoring piece 16 and is forcibly inserted into the smooth hole 128 of the recess 124, in order to prevent any relative movement between the body 164 of the return piece 16 and the first part 12.
  • the elastic member 162 is preferably in the form of a flexible blade.
  • the body 164 and the elastic member 162 are connected via a bendable and elastic coupling portion 168 which extends the elastic member 162 and positions it opposite the body 164, so that the elastic member 162 is able to move towards and move away elastically from the body 164.
  • the hollow 124 comprises, in addition to a complementary portion of the body 164, a curved portion opening on the side face 1205, more precisely on the third section 1208, and for receiving said connecting portion 166.
  • the connecting portion 166 is free to move in the curved portion of the recess 124, parallel to the plane thereof, to allow a reciprocating movement of the elastic member 162 relative to the body 164.
  • the body 164 further comprises a third smooth through hole 76.
  • This third hole 76 is disposed towards the free end 1640 of the body 164.
  • the articulated assembly of the two parts 12, 14 implements a hinge pin 71 and an annular cylindrical piece 75 bearing office.
  • the hinge pin 71 comprises a first rod 72 extending by a second rod 73 coaxial and larger diameter, which is in turn extended by a plate 74 of larger diameter.
  • the hinge pin 71 is made integral with the first part 12 by forcible embedding of the second rod 73 in the ring 125 of the first part 12, the first rod 72 protruding from the ring 125 on the side of the upper face 1202, and the plate 74 abutting against the underside 1204.
  • the annular cylindrical piece 75 has a determined height and outside diameter that allows it to be force-fitted into the second through hole 146 of the second portion 14. It has an inner hole 78 having a determined diameter, which is substantially identical to the diameter of the third through hole 76 of the return piece 16 and the diameter of the first rod 72 of the hinge pin 71. It constitutes a bearing which can be made of ruby.
  • the hinge-type connection 70 comprises a hinge pin which is embodied by the first rod 72 of the articulation pivot 71 secured to the first portion 12.
  • the elastic member 162 of the return piece 16 is positioned so that its free end 1620 is between the stop 144 and the free end of the body 164, and that it bears resiliently against said abutment 144.
  • FIG. figure 5 is a stable configuration in which the two parts 12, 14 abut against each other.
  • This abutment is achieved by abutting the flat portions of their fourth respective sections 1209, 1409 which are located on the side of their respective third sections 1208, 1408. Said respective third sections 1208, 1408 are then in contact with each other. other, while their respective first portions 1206, 1406 are spaced from each other.
  • the two parts 12, 14 can be rotated relative to each other about the axis 72 of the hinge-type articulation 70, thanks to the complementary shapes of their fourth respective sections 1209, 1409.
  • these complementary shapes can roll on one another.
  • the hammer 10 is then brought from its first configuration into a second configuration, which, in the extreme, is a configuration in which the two parts 12, 14 abut against each other.
  • the latter abutment is achieved by abutting the flat portions of their fourth respective sections 1209, 1409 which are located on the side of their respective first sections 1206, 1406.
  • Said first respective sections 1206, 1406 are then in contact with each other. the other, while their respective third sections 1208, 1408 are spaced apart from each other.
  • this second configuration is not a stable configuration for the hammer 10. Indeed, as soon as the external stress ceases, the elastic member 162 of the part 16, which is pressed against the abutment 144, relaxes and returns the hammer 10 in its first configuration, which is a stable configuration.
  • this Extra run of the first part 12 is between 3 degrees and 40 degrees. More preferably, it is between 10 degrees and 25 degrees. In particular, it is substantially equal to 20 degrees.
  • the figure 6a represents the striking mechanism 50 with the hammer 10 in the rest position.
  • the hammer 10 is in its first, stable configuration, which has been described above, in which it has substantially the same shape as a hammer 1 monoblock of the prior art ( Figures 7a, 7b, 7c ).
  • the figure 6b represents the striking mechanism 50 during the arming phase of the hammer 10, which consists in driving in rotation (arrow 96) its second part 14 about an axis 52, which is a fixed axis relative to the striking bridge, and which is installed in the through hole 145 of the second portion 14.
  • This rotational movement of the second portion 14 is effected by means of a drive means 148 of the second portion 14, which cooperates with another means of drive (not shown) of the striking mechanism 50, such as for example a training lift.
  • the tail 142 of the second portion 14 moves away from the fixed stop 54, and opposes the action of return of the elastic stop 56 (arrows 90).
  • the rotational movement of the second portion 14 has no influence on the configuration of the hammer 10, since this displacement does not oppose the return action of the elastic member 162 of the return piece 16.
  • the hammer 10 remains in its first configuration, stable, and the first portion 12 is also rotated.
  • the hammer 10 behaves like a hammer 1 monoblock of the prior art, and the beak 122 away from the stamp 100.
  • the Figure 6c represents the striking mechanism 50 during the striking phase of the hammer 10 on the stamp 100, which is caused by the end of the rotation of the second part 14.
  • This second part 14 is released and turns in the other direction around the fixed axis 52, under the action of the elastic stop 56.
  • the action of return of the elastic stop 56 brings the tail 142 against the fixed stop 54, which results in a first shock (Impact 80) in which part of the kinetic energy stored in the second part 14 during the arming phase is released. But most of this kinetic energy is immediately used in an additional movement of the first portion 12, which is then rotated relative to the second portion 14 about the hinge axis 72 of the hammer 10, against the action of the elastic member 162 of the return piece 16.
  • the relative position of the two axes of rotation 52, 72 is chosen such that the speed of the first part 12 increases between its first trajectory (overall rotation of the two parts 12, 14 about the axis 52) and its additional trajectory (rotation of the first part 12 compared to the second part 14). This speed is also increased by the difference in inertia between the first part 12 and the second part 14, the first part 12 being constructed, preferably, heavier than the second part 14.
  • the beak 122 of the first part 14 then comes into being hitting the stamp 100 with a significant kinetic energy stored by the first part 12, which results in a second shock (impact 800) greater than the first shock (impact 80).
  • the first part 12 is brought into reverse rotation around the axis of rotation 72, under the action of return of the elastic member 182 of the piece of 16. This return is made quickly and without rebound, because the first portion 12 is free to rotate relative to the second portion 14, and the fact that the spring constituted by the elastic member 162 is weak.
  • the hammer 10 is brought back and maintained in its first configuration, stable.
  • the shank 142 is retained against the fixed stop 54 by the action of return of the elastic stop 56.
  • the hammer 10 and the striking mechanism 50 according to the invention have certain advantages over those of the prior art.
  • the hammer 10 according to the invention is a hammer in two parts 12, 14 articulated, while the hammer 1 according to the prior art is a one-piece hammer.
  • This characteristic is not significant when the hammer 10 is in the rest position or during the arming phase, because it behaves like a one-piece hammer.
  • most of the kinetic energy stored in the hammer during the arming phase is restored in the impact of the beak 122 against the stamp 100 rather than in the shock of the tail 142 with the fixed stop 54.
  • the sound obtained is stronger with the hammer 10 according to the invention with the hammer 1 of the prior art.
  • the position of this fixed stop 54 is determined once and for all to adjust the position of the beak 122 with respect to the stamp 100 in the rest position of the hammer 10 ( figure 6a ).
  • This position is not critical. Indeed, the distance between the nozzle 122 and the stamp 100 does not depend only on the position of this fixed stop 54, but also depends on the additional stroke of the first part 12 with respect to the second part 14.
  • the distance between the spout 122 and the stamp 100 in the rest position of the hammer 10 ( figure 6a ) of the striking mechanism 50 of the invention can be chosen slightly larger than the distance between the spout 3 and the stamp 100 in the rest position of the hammer 1 ( figure 7a ) of the ringing mechanism of the prior art.
  • a clock mechanism according to the invention and in particular a striking mechanism 50, which comprises a hammer 10 in two parts 12, 14 hinged together and a fixed stop 54 proves to be more advantageous than a timepiece mechanism.
  • the prior art which comprises a hammer 1 monobloc and an adjustable elastic stop 7.
  • the abutment 144 placed on the upper face 1402 of the second portion 14, and serving to limit the displacement of the free end 1620 of the elastic member 162 of the return piece 16, may not be in line with the bearing 146 .
  • the holes 126, 128 made in the bottom of the recess 124 could be blind holes instead of being through holes.
  • the invention would apply with a hammer 10 having a general shape (in stable configuration) different from that of the illustrated embodiment.
  • the complementary shapes of the fourth respective sections 1209, 1409 of the first portion 12 and the second portion 14 could be different from the forms described.
  • the fourth sections 1209, 1409 could be in the form of grooves whose respective edges would alternately abut to limit the relative displacement of the two parts 12, 14, and therefore limit the additional stroke of the first part 12.

Abstract

The hammer (10) has parts (12, 14) articulated between them, and an elastic unit (162) fixed on one of the parts. The parts are displaced with respect to each other between a stable configuration, in which the parts are maintained under the action of the elastic unit, and a hammer configuration, in which the parts are displaced against the action of the elastic unit. The part (12) is rotated rearward with respect to the part (14) maintained against a fixed stop for returning the hammer to the stable configuration.

Description

La présente invention se rapporte au domaine des pièces d'horlogerie et vise plus particulièrement un marteau pour un mécanisme d'horlogerie, tel qu'un mécanisme de sonnerie. Elle vise encore un mécanisme d'horlogerie, notamment un mécanisme de sonnerie, équipé d'un tel marteau. Elle vise enfin une pièce d'horlogerie comportant un tel marteau ou un tel mécanisme.The present invention relates to the field of timepieces and more particularly to a hammer for a clockwork mechanism, such as a striking mechanism. It also aims a clockwork mechanism, including a striking mechanism, equipped with such a hammer. It finally aims a timepiece including such a hammer or such a mechanism.

On connaît déjà des mécanismes d'horlogerie qui utilisent un marteau comme les mécanismes de remise à zéro dans les chronographes et les mécanismes de sonneries. En général, le marteau est une pièce métallique massive traversée d'un axe. Notamment, dans les sonneries, le marteau frappe un élément fixe susceptible d'être mis en vibration et, lorsque l'élément fixe est frappé, il se met à vibrer et à transmettre sa vibration aux éléments rayonnants de la pièce d'horlogerie. Dans le cas d'une horloge, l'élément fixe est typiquement une cloche, et dans le cas d'une montre l'élément fixe est typiquement un timbre. Le timbre est généralement un fil métallique cintré qui s'étend le long du pourtour de la carrure de la montre, et qui est fixé à un élément de son boîtier. Le marteau oscille autour de cet axe de manière à s'écarter du timbre ou à s'en approcher pour le frapper et le mettre en vibration.Watchmaking mechanisms that use a hammer are already known, such as reset mechanisms in chronographs and ringer mechanisms. In general, the hammer is a massive metal piece crossed by an axis. In particular, in ringtones, the hammer strikes a fixed element capable of being vibrated and, when the fixed element is struck, it begins to vibrate and transmit its vibration to the radiating elements of the timepiece. In the case of a clock, the fixed element is typically a bell, and in the case of a watch the fixed element is typically a stamp. The stamp is generally a bent wire which extends along the periphery of the middle part of the watch, and which is attached to an element of its case. The hammer oscillates around this axis so as to deviate from the timbre or to approach it to hit it and put it in vibration.

Deux qualités principales sont recherchées pour un mécanisme de sonnerie. Il faut que l'impact soit franc, d'une durée suffisante pour l'excitation des composantes graves de la note et assez brève pour la netteté de l'attaque.Two main qualities are sought for a striking mechanism. It is necessary that the impact is frank, of a sufficient duration for the excitation of the serious components of the note and rather brief for the sharpness of the attack.

Dans le cas des montres à complication de sonnerie, la qualité et la robustesse du son naissent des caractéristiques du choc, qui sont fixées par la conception et le réglage du mécanisme de frappe. En particulier, il faut que le marteau s'écarte de l'élément fixe après l'avoir frappé, afin que celui-ci puisse vibrer librement, en évitant tout phénomène de rebond, c'est-à-dire le fait que le marteau n'entre en contact avec l'élément fixe une deuxième fois, voire une troisième fois, après l'avoir frappé une première fois.In the case of bell complication watches, sound quality and robustness arise from the shock characteristics, which are determined by the design and adjustment of the striking mechanism. In particular, it is necessary that the hammer deviates from the fixed element after having struck it, so that it can vibrate freely, avoiding any rebound phenomenon, that is to say the fact that the hammer does not come into contact with the fixed element a second time, even a third time, after hitting it a first time.

Les figures 7a, 7b et 7c montrent, en trois séquences, le fonctionnement d'un mécanisme de sonnerie traditionnel d'une montre, et met en évidence ses inconvénients.The Figures 7a, 7b and 7c show, in three sequences, the operation of a traditional ringing mechanism of a watch, and highlights its disadvantages.

En position de repos du marteau 1 (figure 7a), le bec 3, porté par la tête 2 située à l'avant du marteau 1, est légèrement éloigné du timbre 100, tandis que la queue 4, située à l'arrière du marteau 1, est maintenue entre deux butées élastiques 7 et 8. La position de l'une de ces butées élastique 7 est finement réglée au moyen d'un excentrique 9, ce qui permet de régler finement la distance du bec 3 par rapport au timbre 100 lorsque le marteau 1 est en position de repos. L'autre butée 8 exerce une force de rappel (flèche 90) pour retenir la queue 4 contre la butée réglable 7.In the rest position of hammer 1 ( figure 7a ), the spout 3, carried by the head 2 located at the front of the hammer 1, is slightly away from the stamp 100, while the tail 4, located at the rear of the hammer 1, is held between two elastic stops 7 and 8. The position of one of these elastic stops 7 is finely adjusted by means of an eccentric 9, which allows to finely adjust the distance of the spout 3 relative to the stamp 100 when the hammer 1 is in the rest position. The other stop 8 exerts a restoring force (arrow 90) to hold the tail 4 against the adjustable stop 7.

Lors de la phase d'armage du marteau 1 (figure 7b), celui-ci est entraîné en rotation autour de son axe 5 (flèche 96), sous l'action d'un moyen d'entraînement (non représenté) coopérant avec un doigt (non représenté) enchâssé dans un évidemment 6 du marteau 1. Le bec 3 s'éloigne du timbre 100, et la queue 4 s'éloigne de la butée réglable 7 et pousse l'autre butée élastique 8 qui exerce une force de rappel accrue (flèches 90).During the arming phase of hammer 1 ( figure 7b ), it is rotated about its axis 5 (arrow 96), under the action of a drive means (not shown) cooperating with a finger (not shown) set in a recess 6 of the hammer 1 The spout 3 moves away from the stamp 100, and the tail 4 moves away from the adjustable stop 7 and pushes the other elastic stop 8 which exerts an increased restoring force (arrows 90).

Lors de la phase de frappe du marteau 1 sur le timbre 100 (figure 7c), le marteau 1 est relâché et tourne dans l'autre sens autour de son axe 5. La butée élastique 8 ramène la queue 4 vers la butée élastique réglable 7 (flèche 90). La queue 4 vient heurter la butée réglable 7 (impact 88). Du fait de son élasticité, cette butée réglable 7 autorise la tête 2 du marteau 1 à aller au-delà de sa position de repos, et permet au bec 3 de frapper le timbre 100 (impact 86). La butée élastique réglable 7 exerce ensuite une force de rappel (flèches 92) sur la queue 4 et tend à éloigner le bec 3 du timbre 100.During the striking phase of the hammer 1 on the stamp 100 ( Figure 7c ), the hammer 1 is released and rotates in the other direction about its axis 5. The elastic stop 8 brings the tail 4 towards the adjustable elastic stop 7 (arrow 90). The tail 4 hits the adjustable stop 7 (impact 88). Due to its elasticity, this adjustable stop 7 allows the head 2 of the hammer 1 to go beyond its rest position, and allows the spout 3 to hit the stamp 100 (impact 86). The adjustable elastic stop 7 then exerts a restoring force (arrows 92) on the shank 4 and tends to move the spout 3 away from the stamp 100.

Le marteau 1 est alors ramené en position de repos (figure 7a), position dans laquelle le bec 3 est légèrement écarté du timbre 100. Cette stabilisation du marteau 1 dure plus ou moins longtemps, en fonction de l'élasticité des deux butées 7, 8 et de la finesse de réglage de la position de la butée réglable 7.The hammer 1 is then brought back to the rest position ( figure 7a ), position in which the spout 3 is slightly spaced from the stamp 100. This stabilization of the hammer 1 lasts longer or shorter, depending on the elasticity of the two stops 7, 8 and the fineness of adjustment of the position of the stop adjustable 7.

Les inconvénients d'un agencement tel que celui qui vient d'être décrit apparaissent clairement.The disadvantages of an arrangement such as that which has just been described appear clearly.

Du fait que la queue 4 du marteau 1 vient frapper la butée réglable 7 (impact 88) avant que le bec 3 ne vienne frapper le timbre 100 (impact 86), la plus grande partie de l'énergie cinétique emmagasinée lors de la phase d'armage est dissipée dans le choc de la queue 4 avec la butée élastique réglable 7. L'énergie cinétique disponible au moment de l'impact du bec 3 de la tête 2 avec le timbre 100 est moindre. Ce phénomène est illustré à la figure 7c par le fait que l'impact 88 est plus important que l'impact 86. Par conséquent le volume sonore obtenu lors de la frappe du marteau 1 sur le timbre 100 n'est pas aussi important que souhaité.Since the tail 4 of the hammer 1 strikes the adjustable stop 7 (impact 88) before the spout 3 comes to strike the patch 100 (impact 86), most of the kinetic energy stored during the phase arming is dissipated in the shock of the tail 4 with the adjustable elastic stop 7. The kinetic energy available at the moment of the impact of the spout 3 of the head 2 with the stamp 100 is less. This phenomenon is illustrated in Figure 7c in that the impact 88 is greater than the impact 86. Therefore the sound volume obtained when the hammer 1 hits the stamp 100 is not as important as desired.

Pour éviter ce phénomène, l'homme du métier peut être tenté de diminuer la raideur des butées élastique 7, 8. Mais alors, le marteau 1 risque de ne pas être ramené suffisamment vite en position de repos après son impact sur le timbre 100, ce qui risque de provoquer un phénomène de rebond. En outre, le phénomène de rebond peut être accentué si la position de la butée élastique réglable 7 n'est pas réglée avec suffisamment de précision.To avoid this phenomenon, the skilled person may be tempted to reduce the stiffness of the elastic stops 7, 8. But then, the hammer 1 may not be brought back quickly enough to the rest position after its impact on the stamp 100, which may cause a rebound phenomenon. In addition, the rebound phenomenon can be accentuated if the position of the adjustable elastic stop 7 is not adjusted with sufficient precision.

Avec le mécanisme de sonnerie de la technique antérieure, il s'avère donc nécessaire de déterminer très finement la raideur des deux butées élastiques 7, 8, ainsi que la position de la butée élastique réglable 7.With the striking mechanism of the prior art, it is therefore necessary to determine very finely the stiffness of the two elastic stops 7, 8, as well as the position of the adjustable elastic stop 7.

Un but de la présente invention est de proposer un marteau pour un mécanisme d'horlogerie, ainsi qu'un mécanisme d'horlogerie, notamment un mécanisme de sonnerie équipé d'un tel marteau, qui surmontent les inconvénients évoqués ci-dessus.An object of the present invention is to provide a hammer for a clockwork mechanism, and a clockwork mechanism, including a striking mechanism equipped with such a hammer, which overcome the disadvantages mentioned above.

Selon un premier aspect, l'invention se rapporte à un marteau pour un mécanisme d'une pièce d'horlogerie, comportant :

  • une première partie et une deuxième partie qui sont articulées entre elles, et
  • un organe élastique fixé sur l'une desdites deux parties,
de telle sorte que lesdites deux parties peuvent se déplacer l'une par rapport à l'autre entre une première configuration stable du marteau dans laquelle elles sont maintenues sous l'action dudit organe élastique, et une deuxième configuration du marteau dans laquelle elles sont déplacées contre l'action dudit organe élastique.According to a first aspect, the invention relates to a hammer for a mechanism of a timepiece, comprising:
  • a first part and a second part which are articulated with each other, and
  • an elastic member fixed on one of said two parts,
such that said two parts can move relative to each other between a first stable configuration of the hammer in which they are held under the action of said resilient member, and a second configuration of the hammer in which they are displaced against the action of said elastic member.

Des formes d'exécution particulières du marteau selon le premier aspect de l'invention sont définies dans les revendications dépendantes annexées 2 à 14.Particular embodiments of the hammer according to the first aspect of the invention are defined in the appended dependent claims 2 to 14.

Selon un deuxième aspect, l'invention se rapporte à un mécanisme d'horlogerie équipé d'un marteau selon le premier aspect.According to a second aspect, the invention relates to a clockwork mechanism equipped with a hammer according to the first aspect.

Selon un troisième aspect, l'invention se rapporte à un mécanisme de sonnerie pour une pièce d'horlogerie, du type comportant un élément fixe apte à vibrer lorsqu'il est frappé et un élément mobile apte à frapper ledit élément fixe, dans lequel l'élément mobile est un marteau selon le premier aspect.According to a third aspect, the invention relates to a striking mechanism for a timepiece, of the type comprising a fixed element able to vibrate when struck and a movable element able to hit said fixed element, in which the mobile element is a hammer according to the first aspect.

Selon un quatrième aspect, l'invention se rapporte à une pièce d'horlogerie comportant un marteau selon le premier aspect ou un mécanisme selon le deuxième ou le troisième aspect. Une telle pièce d'horlogerie est par exemple une montre, notamment une montre-bracelet, ou un réveil, ou une pendule, ou une horloge.According to a fourth aspect, the invention relates to a timepiece comprising a hammer according to the first aspect or a mechanism according to the second or third aspect. Such a timepiece is for example a watch, including a wristwatch, or an alarm clock, or a clock, or a clock.

L'invention sera mieux comprise à la lecture de la description détaillée qui va suivre, d'un mode de réalisation particulier de l'invention, fourni à titre illustratif et non limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 représente, en perspective supérieure et en éclaté, un marteau selon l'invention ;
  • la figure 2 représente, en coupe longitudinale, le marteau de la figure 1 ;
  • la figure 3 est une vue de dessus de la première partie du marteau ;
  • la figure 4 est une vue de dessus de la deuxième partie du marteau ;
  • la figure 5 représente, en vue de dessus et de manière schématique, l'intérieur d'une montre comportant un marteau selon l'invention ;
  • les figures 6a, 6b, 6c représentent, en vue de dessus et de manière schématique, trois séquences du fonctionnement d'un mécanisme de sonnerie selon l'invention ; et
  • les figures 7a, 7b, 7c, déjà décrites, sont analogues à la figure 6 pour un mécanisme de sonnerie de la technique antérieure.
The invention will be better understood on reading the following detailed description of a particular embodiment of the invention, provided by way of nonlimiting illustration, with reference to the appended drawings, in which:
  • the figure 1 represents, in upper perspective and exploded, a hammer according to the invention;
  • the figure 2 represents, in longitudinal section, the hammer of the figure 1 ;
  • the figure 3 is a top view of the first part of the hammer;
  • the figure 4 is a top view of the second part of the hammer;
  • the figure 5 represents, in plan view and schematically, the inside of a watch comprising a hammer according to the invention;
  • the Figures 6a, 6b, 6c represent, in plan view and schematically, three sequences of the operation of a striking mechanism according to the invention; and
  • the Figures 7a, 7b, 7c , already described, are analogous to the figure 6 for a ringing mechanism of the prior art.

En se référant tout d'abord à la figure 5, il est représenté une pièce d'horlogerie telle qu'une montre 60 comportant un boîtier ayant un fond 61 et une carrure 62, un remontoir 63, et un mécanisme de sonnerie 50. Le mécanisme de sonnerie 50 comporte un timbre 100 qui se présente sous la forme d'un fil métallique cintré 110 s'étendant sur le pourtour de la carrure 62 et terminé par un talon 112 fixé à un élément du boiter, comme par exemple à ladite carrure 62, par des moyens de fixation classiques tels que des vis 114. Le mécanisme de sonnerie 50 comporte également un marteau 10. qui est doté d'un bec 122 apte à frapper le fil 110 du timbre 100 pour le faire vibrer.Referring first to the figure 5 , there is shown a timepiece such as a watch 60 having a housing having a bottom 61 and a middle part 62, a winding device 63, and a striking mechanism 50. The striking mechanism 50 comprises a stamp 100 which presents itself in the form of a bent wire 110 extending around the perimeter of the middle part 62 and terminated by a heel 112 fixed to an element of the limp, such as for example to said middle part 62, by conventional fixing means such as 114. The striking mechanism 50 also includes a hammer 10. which has a spout 122 adapted to hit the thread 110 of the stamp 100 to vibrate.

En se référant maintenant aux figures 1 et 2, il est représenté, respectivement en perspective supérieure éclatée et en coupe en élévation, un marteau 10 conforme à l'invention. Le marteau 10 comporte une première partie 12 et une deuxième partie 14, qui sont articulées entre elles par une liaison de type charnière 70 coopérant avec une pièce de rappel 16. La pièce de rappel 16 est fixée rigidement sur la première partie 12 et apte à pivoter avec elle par rapport à la deuxième partie 14. Elle comporte un organe élastique 162 qui intervient pour s'opposer à ce pivotement.Referring now to Figures 1 and 2 , it is shown, respectively in exploded upper perspective and in section in elevation, a hammer 10 according to the invention. The hammer 10 comprises a first portion 12 and a second portion 14, which are hinged together by a hinge-type connection 70 cooperating with a return piece 16. The return piece 16 is rigidly attached to the first portion 12 and adapted to pivot with it relative to the second portion 14. It comprises an elastic member 162 which intervenes to oppose this pivoting.

La première partie 12 est une pièce massive limitée par deux faces 1202, 1204 sensiblement parallèles entre elles et sensiblement parallèles au fond 61 du boîtier lorsque le marteau 10 est installé dans la pièce d'horlogerie 60, la face 1202 étant une face supérieure et la face 1204 étant une face inférieure. Les faces supérieure 1202 et inférieure 1204 sont reliées par une face latérale 1205 définissant un contour fermé.The first portion 12 is a solid piece limited by two faces 1202, 1204 substantially parallel to each other and substantially parallel to the bottom 61 of the housing when the hammer 10 is installed in the timepiece 60, the face 1202 being an upper face and the face 1204 being a lower face. The upper faces 1202 and lower 1204 are connected by a lateral face 1205 defining a closed contour.

Comme illustré sur la figure 3, la face latérale 1205 de la première partie 12 comporte, successivement, un premier tronçon 1206 sensiblement rectiligne destiné à être positionné sensiblement parallèlement au timbre 100 lorsque le marteau 10 est installé dans le boîtier de la pièce d'horlogerie 60, un deuxième tronçon 1207 arqué et convexe, un troisième tronçon 1208 arqué et concave, et un quatrième tronçon 1209 qui sera décrit plus loin. Ces tronçons 1206, 1207, 1208, 1209 sont séparés sur la figure 3 par des traits mixtes.As illustrated on the figure 3 , the lateral face 1205 of the first portion 12 comprises, successively, a first substantially straight section 1206 intended to be positioned substantially parallel to the stamp 100 when the hammer 10 is installed in the housing of the timepiece 60, a second section 1207 arcuate and convex, a third section 1208 arcuate and concave, and a fourth section 1209 which will be described later. These sections 1206, 1207, 1208, 1209 are separated on the figure 3 by mixed lines.

Les premier, deuxième et troisième tronçons 1206, 1207 et 1208 définissent une forme sensiblement analogue à celle de l'avant d'un marteau monobloc de la technique antérieure (voir figures 7a, 7b, 7c). En particulier, le premier tronçon 1206 est doté d'un bec 122 qui se trouve positionné en regard du timbre 100 lorsque le marteau 10 est installé dans la pièce d'horlogerie 60 (voir figure 5), et qui est analogue au bec 3 d'un marteau monobloc de la technique antérieure (voir figures 7a, 7b, 7c).The first, second and third sections 1206, 1207 and 1208 define a shape substantially similar to that of the front of a monobloc hammer of the prior art (see Figures 7a, 7b, 7c ). In particular, the first section 1206 is provided with a spout 122 which is positioned opposite the stamp 100 when the hammer 10 is installed in the timepiece 60 (see FIG. figure 5 ), and which is similar to the spout 3 of a one-piece hammer of the prior art (see Figures 7a, 7b, 7c ).

Comme illustré aux figures 1 et 3, un anneau 125, dont le diamètre intérieur est déterminé, s'étend à partir du quatrième tronçon 1209 de la face latérale de la première partie 12.As illustrated in figures 1 and 3 a ring 125 whose inner diameter is determined extends from the fourth section 1209 of the lateral face of the first part 12.

Comme le montrent les figures 1, 2 et 3, la première partie 12 comporte une creusure 124 réalisée sur la face supérieure 1202 et destinée à recevoir la pièce de rappel 16. Dans le fond de cette creusure 124 sont percés un trou fileté 126 et un trou lisse 128. Sur l'exemple illustré, le fond de la creusure 124 est sensiblement plan, le trou fileté 126 est un trou traversant, et le trou lisse 128 est un trou débouchant dans un autre trou lisse 129 de plus grand diamètre, qui à son tour débouche sur la face inférieure 1204.As shown by Figures 1, 2 and 3 , the first portion 12 comprises a recess 124 made on the upper face 1202 and intended to receive the return piece 16. In the bottom of this recess 124 are drilled a threaded hole 126 and a smooth hole 128. In the illustrated example, the bottom of the recess 124 is substantially planar, the threaded hole 126 is a through hole, and the smooth hole 128 is a hole opening into another smooth hole 129 of larger diameter, which in turn opens on the lower face 1204.

La deuxième partie 14 est limitée par deux faces 1402, 1404 sensiblement parallèles entre elles et sensiblement parallèles au fond 61 du boîtier lorsque le marteau 10 est installé dans la pièce d'horlogerie 60, la face 1402 étant une face supérieure et la face 1404 étant une face inférieure. Les faces supérieure 1402 et inférieure 1404 sont reliées par une face latérale 1405 définissant un contour fermé.The second portion 14 is limited by two faces 1402, 1404 substantially parallel to each other and substantially parallel to the bottom 61 of the housing when the hammer 10 is installed in the timepiece 60, the face 1402 being an upper face and the face 1404 being a lower face. The upper faces 1402 and lower 1404 are connected by a lateral face 1405 defining a closed contour.

Quand les deux parties 12, 14 sont assemblées pour former le marteau 10 (voir figure 2), la face supérieure 1402 de la deuxième partie 14 s'étend sensiblement dans le prolongement du plan du fond de la creusure 124 de la première partie 12. La distance entre les faces supérieure 1402 et inférieure 1404 de la deuxième partie 14 est inférieure à la distance entre les faces supérieure 1202 et inférieure 1204 de la première partie 12. Du fait, notamment, de cette différence de hauteur entre les deux parties 12 et 14, il résulte que la deuxième partie 14 est moins massive et moins lourde que la première partie 12.When the two parts 12, 14 are assembled to form the hammer 10 (see figure 2 ), the upper face 1402 of the second portion 14 extends substantially in the extension of the bottom plane of the recess 124 of the first portion 12. The distance between the upper faces 1402 and lower 1404 of the second portion 14 is less than the distance between the upper faces 1202 and lower 1204 of the first part 12. In particular, because of this difference in height between the two parts 12 and 14, it follows that the second part 14 is less massive and less heavy than the first part 12.

Comme illustré sur la figure 4, la face latérale 1405 de la deuxième partie 14 comporte, successivement, un premier tronçon 1406, un deuxième tronçon 1407 sensiblement rectiligne, un troisième tronçon 1408 ayant une portion rectiligne suivie d'une portion courbée et concave, et un quatrième tronçon 1409 qui sera décrit plus loin. Ces tronçons 1406, 1407, 1408, 1409 sont séparés sur la figure 4 par des traits mixtes.As illustrated on the figure 4 the lateral face 1405 of the second portion 14 comprises, successively, a first section 1406, a second segment 1407 that is substantially rectilinear, a third segment 1408 having a rectilinear portion followed by a curved and concave portion, and a fourth section 1409 which will be described later. These sections 1406, 1407, 1408, 1409 are separated on the figure 4 by mixed lines.

Les premier, deuxième et troisième tronçons 1406, 1407 et 1408 définissent une forme sensiblement analogue à celle de l'arrière d'un marteau monobloc de la technique antérieure. En particulier, le deuxième tronçon 1407 et le troisième tronçon 1408 définissent une queue 142 de la deuxième partie 14 du marteau 10, analogue à la queue 4 d'un marteau monobloc de la technique antérieure (voir figures 7a, 7b, 7c).The first, second and third sections 1406, 1407 and 1408 define a shape substantially similar to that of the rear of a one-piece hammer of the prior art. In particular, the second section 1407 and the third section 1408 define a shank 142 of the second portion 14 of the hammer 10, similar to the shank 4 of a one-piece hammer of the prior art (see FIG. Figures 7a, 7b, 7c ).

Vers la jonction entre les premier et deuxième tronçons 1406, 1407, la deuxième partie 14 comporte un premier trou traversant lisse 145, destiné à recevoir en rotation un axe fixe 52 du mécanisme de sonnerie 50 autour duquel ladite deuxième partie 14 du marteau 10 peut osciller (voir figures 6a, 6b, 6c).Towards the junction between the first and second sections 1406, 1407, the second portion 14 comprises a first smooth through hole 145, intended to receive in rotation a fixed axis 52 of the striking mechanism 50 around which said second portion 14 of the hammer 10 can oscillate (see Figures 6a, 6b, 6c ).

Toujours vers la jonction entre les premier et deuxième tronçons 1406, 1407, et sur sa face supérieure 1402, la deuxième partie 14 comporte une butée 144, destinée à limiter le déplacement d'une extrémité libre 1620 d'un organe élastique 162 de la pièce de rappel 16 comme il sera décrit plus loin en référence aux figures 6a, 6b, 6c. Dans l'exemple illustré, la butée 144 se présente sous la forme d'un bourrelet annulaire disposé dans le prolongement axial du premier trou traversant 145. Cet agencement particulier où deux fonctions différentes (rotation, butée) sont réalisées par des éléments superposés 145, 144 permet de réduire la taille de la deuxième partie 14, et donc de la rendre plus légère, ce qui accentue la différence d'inertie entre les deux parties 12, 14.Always towards the junction between the first and second sections 1406, 1407, and on its upper face 1402, the second portion 14 includes a stop 144, intended to limit the displacement of a free end 1620 of an elastic member 162 of the workpiece recall 16 as will be described later with reference to Figures 6a, 6b, 6c . In the example illustrated, the abutment 144 is in the form of an annular bead disposed in the axial extension of the first through-hole 145. This particular arrangement in which two different functions (rotation, abutment) are formed by superimposed elements 145, 144 makes it possible to reduce the size of the second part 14, and thus to make it lighter, which accentuates the difference in inertia between the two parts 12, 14.

Au niveau du premier tronçon 1406, la deuxième partie 14 comporte un moyen d'entraînement 148, pour entraîner en rotation la deuxième partie 14 autour de l'axe fixe 52 du mécanisme de sonnerie 50. Selon l'exemple illustré aux figures, ce moyen d'entraînement 148 se présente sous la forme d'un évidemment apte à recevoir un doigt (non représenté) apte à coopérer avec d'autres moyens d'entraînement (non représentés aux figures) du mécanisme de sonnerie 50 de manière conventionnelle.At the first section 1406, the second portion 14 comprises a drive means 148, for rotating the second portion 14 about the fixed axis 52 of the striking mechanism 50. According to the example shown in the figures, this means drive 148 is in the form of an obviously adapted to receive a finger (not shown) adapted to cooperate with other drive means (not shown in the figures) of the striking mechanism 50 in a conventional manner.

Au niveau du quatrième tronçon 1409, la deuxième partie 14 comporte un deuxième trou traversant lisse 146, qui débouche d'un côté sur la face supérieure 1402 et de l'autre côté sur la face inférieure 1404 qui se trouve ici plus proche de la face supérieure 1402. La deuxième partie 14 présente localement une hauteur réduite (visible sur la figure 2), ce qui accentue encore la différence d'inertie entre les deux parties 12, 14.At the fourth section 1409, the second portion 14 has a second smooth through hole 146, which opens on one side on the upper face 1402 and on the other side on the lower face 1404 which is here closer to the face 1402. The second part 14 presents locally a reduced height (visible on the figure 2 ), which further accentuates the difference of inertia between the two parts 12, 14.

Comme représenté sur les figures 3 et 4, le quatrième tronçon 1209 de la face latérale 1205 de la première partie 12 et le quatrième tronçon 1409 de la face latérale 1405 de la deuxième partie 14 présentent chacun deux courbures opposées adjacentes disposées entre deux portions sensiblement planes. Ces formes semblables et presque complémentaires autorisent un déplacement, par roulement, des deux parties 12, 14 l'une par rapport à l'autre, ce déplacement étant limité de part et d'autre par lesdites portions sensiblement planes.As shown on Figures 3 and 4 , the fourth portion 1209 of the lateral face 1205 of the first portion 12 and the fourth portion 1409 of the lateral face 1405 of the second portion 14 each have two adjacent opposite curvatures disposed between two substantially planar portions. These similar and almost complementary forms allow a displacement, by rolling, two parts 12, 14 relative to each other, this displacement being limited on both sides by said substantially planar portions.

La pièce de rappel 16 va maintenant être décrite en référence à la figure 1. Elle comporte un corps 164 et un organe élastique 162 ayant une extrémité libre 1620.The return piece 16 will now be described with reference to the figure 1 . It comprises a body 164 and an elastic member 162 having a free end 1620.

Le corps 164 est de préférence rigide. Il est destiné à être rigidement fixé dans la creusure 124 de la première partie 12. A cet effet, au moins une portion de la creusure 124 et au moins une portion du corps 164 présentent des formes complémentaires. Le corps 164 est doté d'un premier trou traversant lisse 1642 et d'un deuxième trou traversant lisse 1644. Une vis de serrage 18 est vissée à travers ledit premier trou 1642 dans le trou fileté 126 de la creusure 124, pour fixer rigidement le corps 164 de la pièce de rappel 16 à la première partie 12. Une goupille de stabilisation 19 traverse ledit deuxième trou 1644 de la pièce de rappel 16 et est enchâssée à force dans le trou lisse 128 de la creusure 124, afin d'empêcher tout mouvement relatif entre le corps 164 de la pièce de rappel 16 et la première partie 12.The body 164 is preferably rigid. It is intended to be rigidly fixed in the recess 124 of the first part 12. For this purpose, at least a portion of the recess 124 and at least a portion of the body 164 have complementary shapes. The body 164 is provided with a first smooth through hole 1642 and a second smooth through hole 1644. A clamping screw 18 is threaded through said first hole 1642 into the threaded hole 126 of the recess 124 to rigidly secure the body 164 of the return piece 16 to the first part 12. A stabilizing pin 19 passes through said second hole 1644 of the restoring piece 16 and is forcibly inserted into the smooth hole 128 of the recess 124, in order to prevent any relative movement between the body 164 of the return piece 16 and the first part 12.

L'organe élastique 162 se présente de préférence sous la forme d'une lame flexible. Le corps 164 et l'organe élastique 162 sont raccordés par l'intermédiaire d'une portion de raccord 168 courbée et élastique qui prolonge l'organe élastique 162 et le positionne en regard du corps 164, de telle sorte que l'organe élastique 162 est apte à se rapprocher et à s'écarter élastiquement du corps 164. Comme illustré sur la figure 1, la creusure 124 comporte, en plus d'une portion complémentaire du corps 164, une portion courbée débouchant sur la face latérale 1205, plus précisément sur le troisième tronçon 1208, et destinée à recevoir ladite portion de raccord 166. La portion de raccord 166 est libre de se déplacer dans la portion courbée de la creusure 124, parallèlement au plan de celle-ci, afin de permettre un mouvement de va-et-vient de l'organe élastique 162 par rapport au corps 164.The elastic member 162 is preferably in the form of a flexible blade. The body 164 and the elastic member 162 are connected via a bendable and elastic coupling portion 168 which extends the elastic member 162 and positions it opposite the body 164, so that the elastic member 162 is able to move towards and move away elastically from the body 164. As illustrated on the figure 1 , the hollow 124 comprises, in addition to a complementary portion of the body 164, a curved portion opening on the side face 1205, more precisely on the third section 1208, and for receiving said connecting portion 166. The connecting portion 166 is free to move in the curved portion of the recess 124, parallel to the plane thereof, to allow a reciprocating movement of the elastic member 162 relative to the body 164.

Sur une portion qui n'est pas destinée à être reçue par la creusure 124, le corps 164 comporte, en outre, un troisième trou traversant lisse 76. Ce troisième trou 76 est disposé vers l'extrémité libre 1640 du corps 164. Lorsque la pièce de rappel 16 est fixée sur la première partie 12, le troisième trou 76 du corps de la pièce de rappel 16 et l'anneau 125 de la première partie 12 sont alignés.On a portion that is not intended to be received by the recess 124, the body 164 further comprises a third smooth through hole 76. This third hole 76 is disposed towards the free end 1640 of the body 164. When the return piece 16 is fixed on the first part 12, the third hole 76 of the body of the return piece 16 and the ring 125 of the first part 12 are aligned.

On va maintenant décrire plus en détail l'assemblage articulé des deux parties 12, 14 du marteau 10. Cet assemblage articulé est réalisé au niveau des quatrièmes tronçons respectifs 1209, 1409 des faces latérales respectives 1205, 1405 des deux parties 12, 14 par une liaison de type charnière 70.The articulated assembly of the two parts 12, 14 of the hammer 10 will now be described in greater detail. This articulated assembly is made at the level of the fourth respective sections 1209, 1409 of the respective lateral faces 1205, 1405 of the two parts 12, 14 by a hinge type connection 70.

Selon le mode de réalisation illustré aux figures, l'assemblage articulé des deux parties 12, 14 met en oeuvre un pivot d'articulation 71 et une pièce cylindrique annulaire 75 faisant office de palier.According to the embodiment illustrated in the figures, the articulated assembly of the two parts 12, 14 implements a hinge pin 71 and an annular cylindrical piece 75 bearing office.

Le pivot d'articulation 71 comporte une première tige 72 se prolongeant par une deuxième tige 73 coaxiale et de plus grand diamètre, laquelle se prolonge à son tour par une plaque 74 de plus grand diamètre. Le pivot d'articulation 71 est rendu solidaire de la première partie 12 par enchâssement à force de la deuxième tige 73 dans l'anneau 125 de la première partie 12, la première tige 72 dépassant de l'anneau 125 du côté de la face supérieure 1202, et la plaque 74 venant buter contre la face inférieure 1204.The hinge pin 71 comprises a first rod 72 extending by a second rod 73 coaxial and larger diameter, which is in turn extended by a plate 74 of larger diameter. The hinge pin 71 is made integral with the first part 12 by forcible embedding of the second rod 73 in the ring 125 of the first part 12, the first rod 72 protruding from the ring 125 on the side of the upper face 1202, and the plate 74 abutting against the underside 1204.

La pièce cylindrique annulaire 75 présente une hauteur et un diamètre extérieur déterminés qui lui permettent d'être enchâssée à force dans le deuxième trou traversant 146 de la deuxième partie 14. Elle présente un trou intérieur 78 ayant un diamètre déterminé, qui est sensiblement identique au diamètre du troisième trou traversant 76 de la pièce de rappel 16 et au diamètre de la première tige 72 du pivot d'articulation 71. Elle constitue un palier qui peut être réalisé en rubis.The annular cylindrical piece 75 has a determined height and outside diameter that allows it to be force-fitted into the second through hole 146 of the second portion 14. It has an inner hole 78 having a determined diameter, which is substantially identical to the diameter of the third through hole 76 of the return piece 16 and the diameter of the first rod 72 of the hinge pin 71. It constitutes a bearing which can be made of ruby.

La liaison de type charnière 70 comporte un axe d'articulation qui est matérialisé par la première tige 72 du pivot d'articulation 71 rendu solidaire de la première partie 12.The hinge-type connection 70 comprises a hinge pin which is embodied by the first rod 72 of the articulation pivot 71 secured to the first portion 12.

Lorsque les deux parties 12, 14 sont assemblées au moyen de l'articulation de type charnière 70 pour former le marteau 10, l'organe élastique 162 de la pièce de rappel 16 est positionné de telle façon que son extrémité libre 1620 se trouve entre la butée 144 et l'extrémité libre du corps 164, et qu'elle s'appuie élastiquement contre ladite butée 144.When the two parts 12, 14 are assembled by means of the hinge type articulation 70 to form the hammer 10, the elastic member 162 of the return piece 16 is positioned so that its free end 1620 is between the stop 144 and the free end of the body 164, and that it bears resiliently against said abutment 144.

Lorsque le marteau 10 n'est soumis à aucune sollicitation extérieure, l'organe élastique 162 et son extrémité libre 1620 en appui contre la butée 144 ont pour effet de maintenir le marteau 10 dans une première configuration, illustrée à la figure 5, qui est une configuration stable dans laquelle les deux parties 12, 14 sont en butée l'une contre l'autre. Cette butée est réalisée par la mise en butée des portions planes de leurs quatrièmes tronçons respectifs 1209, 1409 qui sont situés du côté de leurs troisièmes tronçons respectifs 1208, 1408. Lesdits troisièmes tronçons respectifs 1208, 1408 sont alors en contact l'un avec l'autre, tandis que leurs premiers tronçons respectifs 1206, 1406 sont écartés l'un de l'autre.When the hammer 10 is not subjected to any external stress, the elastic member 162 and its free end 1620 resting against the abutment 144 have the effect of keeping the hammer 10 in a first configuration, illustrated in FIG. figure 5 which is a stable configuration in which the two parts 12, 14 abut against each other. This abutment is achieved by abutting the flat portions of their fourth respective sections 1209, 1409 which are located on the side of their respective third sections 1208, 1408. Said respective third sections 1208, 1408 are then in contact with each other. other, while their respective first portions 1206, 1406 are spaced from each other.

Sous l'action d'une sollicitation extérieure, les deux parties 12, 14 peuvent être amenées à tourner l'une par rapport à l'autre autour de l'axe 72 de l'articulation de type charnière 70, grâce aux formes complémentaires de leurs quatrièmes tronçons respectifs 1209, 1409. Sur l'exemple illustré, ces formes complémentaires peuvent rouler l'une sur l'autre. Le marteau 10 est alors amené de sa première configuration dans une deuxième configuration, qui, à l'extrême, est une configuration dans laquelle les deux parties 12, 14 sont en butée l'une contre l'autre. Cette dernière butée est réalisée par la mise en butée des portions planes de leurs quatrièmes tronçons respectifs 1209, 1409 qui sont situés du côté de leurs premiers tronçons respectifs 1206, 1406. Lesdits premiers tronçons respectifs 1206, 1406 sont alors en contact l'un avec l'autre, tandis que leurs troisièmes tronçons respectifs 1208, 1408 sont écartés l'un de l'autre. Mais cette deuxième configuration n'est pas une configuration stable pour le marteau 10. En effet, dès que la sollicitation extérieure cesse, l'organe élastique 162 de la pièce de rappel 16, qui est appuyé contre la butée 144, se détend et ramène le marteau 10 dans sa première configuration, qui est une configuration stable.Under the action of an external stress, the two parts 12, 14 can be rotated relative to each other about the axis 72 of the hinge-type articulation 70, thanks to the complementary shapes of their fourth respective sections 1209, 1409. In the illustrated example, these complementary shapes can roll on one another. The hammer 10 is then brought from its first configuration into a second configuration, which, in the extreme, is a configuration in which the two parts 12, 14 abut against each other. The latter abutment is achieved by abutting the flat portions of their fourth respective sections 1209, 1409 which are located on the side of their respective first sections 1206, 1406. Said first respective sections 1206, 1406 are then in contact with each other. the other, while their respective third sections 1208, 1408 are spaced apart from each other. But this second configuration is not a stable configuration for the hammer 10. Indeed, as soon as the external stress ceases, the elastic member 162 of the part 16, which is pressed against the abutment 144, relaxes and returns the hammer 10 in its first configuration, which is a stable configuration.

Le déplacement relatif, par roulement, des quatrièmes tronçons respectifs 1209, 1409 des deux parties 12, 14 est limité par des portions planes situées de part et d'autre de leurs courbures opposées et adjacentes. Par conséquent, le déplacement relatif des deux parties 12, 14 est également limité. Par suite, la course supplémentaire de la première partie 12 au-delà de la course de la deuxième partie 14 est également limitée, entre la première configuration, stable, du marteau 10 et la deuxième configuration extrême du marteau 10. De manière préférée, cette course supplémentaire de la première partie 12 est comprise entre 3 degrés et 40 degrés. De manière plus préférée, elle est comprise entre 10 degrés et 25 degrés. En particulier, elle est sensiblement égale à 20 degrés.Relative displacement, rolling, the fourth respective sections 1209, 1409 of the two parts 12, 14 is limited by planar portions located on either side of their opposite and adjacent curvatures. Therefore, the relative displacement of the two parts 12, 14 is also limited. As a result, the additional stroke of the first portion 12 beyond the stroke of the second portion 14 is also limited, between the first stable configuration of the hammer 10 and the second extreme configuration of the hammer 10. Preferably, this Extra run of the first part 12 is between 3 degrees and 40 degrees. More preferably, it is between 10 degrees and 25 degrees. In particular, it is substantially equal to 20 degrees.

On va maintenant décrire le fonctionnement d'un mécanisme de sonnerie 50 équipé du marteau 10 selon l'invention, en référence aux figures 5, 6a, 6b et 6c.We will now describe the operation of a striking mechanism 50 equipped with the hammer 10 according to the invention, with reference to the figures 5 , 6a, 6b and 6c .

La figure 6a représente le mécanisme de sonnerie 50 avec le marteau 10 en position de repos. Le marteau 10 est dans sa première configuration, stable, qui a été décrite ci-dessus, dans laquelle il a sensiblement la même forme qu'un marteau 1 monobloc de la technique antérieure (figures 7a, 7b, 7c).The figure 6a represents the striking mechanism 50 with the hammer 10 in the rest position. The hammer 10 is in its first, stable configuration, which has been described above, in which it has substantially the same shape as a hammer 1 monoblock of the prior art ( Figures 7a, 7b, 7c ).

Dans cette position de repos du marteau 10, son bec 122 se trouve à une distance relativement faible du timbre 100, cette position du bec 122, et donc du marteau 10, étant déterminée par le fait que la queue 142 du marteau 10 est en appui contre une butée fixe 54 du mécanisme de sonnerie 50, et maintenue contre cette butée fixe 54 (flèche 90) par une butée élastique 56 du mécanisme de sonnerie 50. Ladite butée fixe 54 peut prendre la forme d'une goupille enchâssée dans le pont de sonnerie (non représenté) de la pièce d'horlogerie 60, tandis que ladite butée élastique 56 peut être analogue à la butée élastique 8 de la technique antérieure (figures 7a, 7b, 7c).In this rest position of the hammer 10, its spout 122 is at a relatively small distance from the stamp 100, this position of the spout 122, and therefore of the hammer 10, being determined by the fact that the tail 142 of the hammer 10 bears against a fixed stop 54 of the striking mechanism 50, and held against this fixed stop 54 (arrow 90) by an elastic stop 56 of the striking mechanism 50. Said fixed stop 54 can take the form of a pin embedded in the bridge of ring (not shown) of the timepiece 60, while said elastic stop 56 may be similar to the elastic stop 8 of the prior art ( Figures 7a, 7b, 7c ).

La figure 6b représente le mécanisme de sonnerie 50 lors de la phase d'armage du marteau 10, qui consiste à entraîner en rotation (flèche 96) sa deuxième partie 14 autour d'un axe 52, qui est un axe fixe par rapport au pont de sonnerie, et qui est installé dans le trou traversant 145 de la deuxième partie 14. Ce déplacement en rotation de la deuxième partie 14 est effectué au moyen d'un moyen d'entraînement 148 de cette deuxième partie 14, qui coopère avec un autre moyen d'entraînement (non représenté) du mécanisme de sonnerie 50, tel que par exemple une levée d'entraînement.The figure 6b represents the striking mechanism 50 during the arming phase of the hammer 10, which consists in driving in rotation (arrow 96) its second part 14 about an axis 52, which is a fixed axis relative to the striking bridge, and which is installed in the through hole 145 of the second portion 14. This rotational movement of the second portion 14 is effected by means of a drive means 148 of the second portion 14, which cooperates with another means of drive (not shown) of the striking mechanism 50, such as for example a training lift.

Lors de cette phase d'armage, la queue 142 de la deuxième partie 14 s'éloigne de la butée fixe 54, et s'oppose à l'action de rappel de la butée élastique 56 (flèches 90). Le déplacement en rotation de la deuxième partie 14 n'a pas d'influence sur la configuration du marteau 10, car ce déplacement ne s'oppose pas à l'action de rappel de l'organe élastique 162 de la pièce de rappel 16. Le marteau 10 reste dans sa première configuration, stable, et la première partie 12 est également entraînée en rotation. Au cours de la phase d'armage, le marteau 10 se comporte comme un marteau 1 monobloc de la technique antérieure, et le bec 122 s'éloigne du timbre 100.During this arming phase, the tail 142 of the second portion 14 moves away from the fixed stop 54, and opposes the action of return of the elastic stop 56 (arrows 90). The rotational movement of the second portion 14 has no influence on the configuration of the hammer 10, since this displacement does not oppose the return action of the elastic member 162 of the return piece 16. The hammer 10 remains in its first configuration, stable, and the first portion 12 is also rotated. During the arming phase, the hammer 10 behaves like a hammer 1 monoblock of the prior art, and the beak 122 away from the stamp 100.

La figure 6c représente le mécanisme de sonnerie 50 lors de la phase de frappe du marteau 10 sur le timbre 100, qui est provoquée par la fin de la mise en rotation de la deuxième partie 14. Cette deuxième partie 14 est relâchée et tourne dans l'autre sens autour de l'axe fixe 52, sous l'action de la butée élastique 56. L'action de rappel de la butée élastique 56 (flèche 90) ramène la queue 142 contre la butée fixe 54, ce qui se traduit par un premier choc (impact 80) dans lequel une partie de l'énergie cinétique emmagasinée dans la deuxième partie 14 lors de la phase d'armage est libérée. Mais la plus grande partie de cette énergie cinétique est immédiatement utilisée dans un mouvement supplémentaire de la première partie 12, qui est alors mise en rotation par rapport à la deuxième partie 14 autour de l'axe d'articulation 72 du marteau 10, à l'encontre de l'action de l'organe élastique 162 de la pièce de rappel 16. La position relative des deux axes de rotation 52, 72 est choisie de telle façon que la vitesse de la première partie 12 augmente entre sa première trajectoire (rotation d'ensemble des deux parties 12, 14 autour de l'axe 52) et sa trajectoire supplémentaire (rotation de la première partie 12 par rapport à la deuxième partie 14). Cette vitesse est également accrue par la différence d'inertie entre la première partie 12 et la deuxième partie 14, la première partie 12 étant construite, de préférence, plus lourde que la deuxième partie 14. Le bec 122 de la première partie 14 vient alors heurter le timbre 100 avec une énergie cinétique importante emmagasinée par la première partie 12, ce qui se traduit par un deuxième choc (impact 800) plus important que le premier choc (impact 80). Après le deuxième choc (impact 800) du bec 122 sur le timbre 100, la première partie 12 est ramenée en rotation inverse autour de l'axe de rotation 72, sous l'action de rappel de l'organe élastique 182 de la pièce de rappel 16. Ce retour s'effectue rapidement et sans rebond, du fait que la première partie 12 est libre de tourner par rapport à la deuxième partie 14, et du fait que le ressort constitué par l'organe élastique 162 est faible. Ainsi, le marteau 10 est ramené, et maintenu, dans sa première configuration, stable. Simultanément, la queue 142 est retenue contre la butée fixe 54 par l'action de rappel de la butée élastique 56.The Figure 6c represents the striking mechanism 50 during the striking phase of the hammer 10 on the stamp 100, which is caused by the end of the rotation of the second part 14. This second part 14 is released and turns in the other direction around the fixed axis 52, under the action of the elastic stop 56. The action of return of the elastic stop 56 (arrow 90) brings the tail 142 against the fixed stop 54, which results in a first shock (Impact 80) in which part of the kinetic energy stored in the second part 14 during the arming phase is released. But most of this kinetic energy is immediately used in an additional movement of the first portion 12, which is then rotated relative to the second portion 14 about the hinge axis 72 of the hammer 10, against the action of the elastic member 162 of the return piece 16. The relative position of the two axes of rotation 52, 72 is chosen such that the speed of the first part 12 increases between its first trajectory (overall rotation of the two parts 12, 14 about the axis 52) and its additional trajectory (rotation of the first part 12 compared to the second part 14). This speed is also increased by the difference in inertia between the first part 12 and the second part 14, the first part 12 being constructed, preferably, heavier than the second part 14. The beak 122 of the first part 14 then comes into being hitting the stamp 100 with a significant kinetic energy stored by the first part 12, which results in a second shock (impact 800) greater than the first shock (impact 80). After the second impact (impact 800) of the beak 122 on the patch 100, the first part 12 is brought into reverse rotation around the axis of rotation 72, under the action of return of the elastic member 182 of the piece of 16. This return is made quickly and without rebound, because the first portion 12 is free to rotate relative to the second portion 14, and the fact that the spring constituted by the elastic member 162 is weak. Thus, the hammer 10 is brought back and maintained in its first configuration, stable. Simultaneously, the shank 142 is retained against the fixed stop 54 by the action of return of the elastic stop 56.

Le marteau 10 et le mécanisme de sonnerie 50 selon l'invention présentent des avantages certains par rapport à ceux de la technique antérieure.The hammer 10 and the striking mechanism 50 according to the invention have certain advantages over those of the prior art.

Le marteau 10 selon l'invention est un marteau en deux parties 12, 14 articulées, alors que le marteau 1 selon la technique antérieure est un marteau monobloc. Cette caractéristique n'est pas significative lorsque le marteau 10 est en position de repos ou lors de la phase d'armage, car il se comporte comme un marteau monobloc. En revanche, lors de la phase de frappe, la plus grande partie de l'énergie cinétique emmagasinée dans le marteau lors de la phase d'armage est restituée dans le choc du bec 122 contre le timbre 100 plutôt que dans le choc de la queue 142 avec la butée fixe 54. Le son obtenu est plus fort avec le marteau 10 selon l'invention qu'avec le marteau 1 de la technique antérieure.The hammer 10 according to the invention is a hammer in two parts 12, 14 articulated, while the hammer 1 according to the prior art is a one-piece hammer. This characteristic is not significant when the hammer 10 is in the rest position or during the arming phase, because it behaves like a one-piece hammer. In contrast, during the strike phase, most of the kinetic energy stored in the hammer during the arming phase is restored in the impact of the beak 122 against the stamp 100 rather than in the shock of the tail 142 with the fixed stop 54. The sound obtained is stronger with the hammer 10 according to the invention with the hammer 1 of the prior art.

De plus, avec l'agencement de la technique antérieure, il est nécessaire que la queue 4 soit ramenée contre une butée élastique 7 qui autorise le marteau à aller au-delà de sa position de repos, afin que le bec 3 percute le timbre 100. En revanche, avec le marteau 10 selon l'invention, du fait que le déplacement supplémentaire de la première partie 12, et donc du bec 122, soit réalisé grâce à la présence de l'articulation de type charnière 70, une butée fixe 54 remplace avantageusement la butée élastique 7 de la technique antérieure.In addition, with the arrangement of the prior art, it is necessary that the tail 4 is brought against an elastic stop 7 which allows the hammer to go beyond its rest position, so that the spout 3 hits the stamp 100 On the other hand, with the hammer 10 according to the invention, because the additional displacement of the first part 12, and therefore the spout 122, is achieved thanks to the presence of the hinge-type joint 70, a fixed stop 54 advantageously replaces the elastic stop 7 of the prior art.

La position de cette butée fixe 54 est déterminée une fois pour toutes pour régler la position du bec 122 par rapport au timbre 100 dans la position de repos du marteau 10 (figure 6a). Cette position n'est pas critique. En effet, la distance entre le bec 122 et le timbre 100 ne dépend pas que de la position de cette butée fixe 54, mais dépend aussi de la course supplémentaire de la première partie 12 par rapport à la deuxième partie 14. Au contraire, avec l'agencement de la technique antérieure, il est nécessaire de régler finement la position de la butée élastique réglable 7, et cette position est critique car elle détermine la distance entre le bec 3 et le timbre 100 en position de repos du marteau 1 (figure 7a). En conséquence, la distance entre le bec 122 et le timbre 100 dans la position de repos du marteau 10 (figure 6a) du mécanisme de sonnerie 50 de l'invention peut être choisie légèrement plus grande que la distance entre le bec 3 et le timbre 100 dans la position de repos du marteau 1 (figure 7a) du mécanisme de sonnerie de la technique antérieure.The position of this fixed stop 54 is determined once and for all to adjust the position of the beak 122 with respect to the stamp 100 in the rest position of the hammer 10 ( figure 6a ). This position is not critical. Indeed, the distance between the nozzle 122 and the stamp 100 does not depend only on the position of this fixed stop 54, but also depends on the additional stroke of the first part 12 with respect to the second part 14. On the contrary, with the arrangement of the prior art, it is necessary to finely adjust the position of the adjustable elastic stop 7, and this position is critical because it determines the distance between the spout 3 and the stamp 100 in the rest position of the hammer 1 ( figure 7a ). Consequently, the distance between the spout 122 and the stamp 100 in the rest position of the hammer 10 ( figure 6a ) of the striking mechanism 50 of the invention can be chosen slightly larger than the distance between the spout 3 and the stamp 100 in the rest position of the hammer 1 ( figure 7a ) of the ringing mechanism of the prior art.

Enfin, avec l'agencement de la technique antérieure, il est nécessaire de ramener le marteau 1 monobloc dans sa position de repos après le choc du bec 3 sur le timbre 100, ce retour étant à l'origine d'un phénomène de rebond. Au contraire, avec l'agencement selon l'invention, il suffit de ramener le marteau 10 dans sa configuration stable, par une rotation retour de la première partie 12 par rapport à la deuxième partie 14, cette deuxième partie 14 étant déjà maintenue en bonne position contre la butée fixe 54 sous l'action de rappel de la butée élastique 56. Cela a pour avantage de supprimer tout phénomène de rebond.Finally, with the arrangement of the prior art, it is necessary to bring the hammer 1 monoblock in its rest position after the impact of the spout 3 on the stamp 100, this return being at the origin of a rebound phenomenon. On the contrary, with the arrangement according to the invention, it suffices to bring the hammer 10 back to its stable configuration by a return rotation of the first part 12 with respect to the second part 14, this second part 14 being already maintained in good condition. position against the fixed stop 54 under the action of return of the elastic stop 56. This has the advantage of eliminating any rebound phenomenon.

Un mécanisme d'horlogerie selon l'invention, et notamment un mécanisme de sonnerie 50, qui comporte un marteau 10 en deux parties 12, 14 articulées entre elles et une butée fixe 54 s'avère plus avantageux qu'un mécanisme d'horlogerie de la technique antérieure, qui comporte un marteau 1 monobloc et une butée élastique réglable 7.A clock mechanism according to the invention, and in particular a striking mechanism 50, which comprises a hammer 10 in two parts 12, 14 hinged together and a fixed stop 54 proves to be more advantageous than a timepiece mechanism. the prior art, which comprises a hammer 1 monobloc and an adjustable elastic stop 7.

Bien entendu, l'invention n'est pas limitée au mode de réalisation qui a été illustré aux figures et couvre des variantes de réalisation à la portée de l'homme du métier.Of course, the invention is not limited to the embodiment that has been illustrated in the figures and covers variants within the scope of those skilled in the art.

La butée 144 placée sur la face supérieure 1402 de la deuxième partie 14, et servant à limiter le déplacement de l'extrémité libre 1620 de l'organe élastique 162 de la pièce de rappel 16, pourrait ne pas être dans le prolongement du palier 146.The abutment 144 placed on the upper face 1402 of the second portion 14, and serving to limit the displacement of the free end 1620 of the elastic member 162 of the return piece 16, may not be in line with the bearing 146 .

Les trous 126, 128 réalisés dans le fond de la creusure 124 pourraient être des trous borgnes au lieu d'être des trous traversants.The holes 126, 128 made in the bottom of the recess 124 could be blind holes instead of being through holes.

L'invention s'appliquerait avec un marteau 10 ayant une forme générale (en configuration stable) différente de celle du mode de réalisation illustré.The invention would apply with a hammer 10 having a general shape (in stable configuration) different from that of the illustrated embodiment.

En particulier, les formes complémentaires des quatrièmes tronçons respectifs 1209, 1409 de la première partie 12 et de la deuxième partie 14 pourraient être différentes des formes décrites. Pourraient convenir toutes formes complémentaires autorisant un déplacement relatif des deux parties 12, 14, ce déplacement relatif étant limité de part et d'autre par des portions formant butées. Par exemple, les quatrièmes tronçons 1209, 1409 pourraient se présenter sous forme de gorges dont les bords respectifs viendraient alternativement en butée pour limiter le déplacement relatif des deux parties 12, 14, et par suite limiter la course supplémentaire de la première partie 12.In particular, the complementary shapes of the fourth respective sections 1209, 1409 of the first portion 12 and the second portion 14 could be different from the forms described. Could suit any complementary shapes allowing a relative displacement of the two parts 12, 14, this relative movement being limited on both sides by forming portions abutments. For example, the fourth sections 1209, 1409 could be in the form of grooves whose respective edges would alternately abut to limit the relative displacement of the two parts 12, 14, and therefore limit the additional stroke of the first part 12.

Claims (18)

Marteau (10) pour un mécanisme (50) d'une pièce d'horlogerie (60),
caractérisé par le fait qu'il comporte : - une première partie (12) et une deuxième partie (14) qui sont articulées entre elles, et - un organe élastique (162) fixé sur l'une (12) desdites deux parties, de telle sorte que lesdites deux parties (12, 14) peuvent se déplacer l'une par rapport à l'autre entre une première configuration stable du marteau (10) dans laquelle elles sont maintenues sous l'action dudit organe élastique (162), et une deuxième configuration du marteau (10) dans laquelle elles sont déplacées contre l'action dudit organe élastique (162).Hammer (10) for a mechanism (50) of a timepiece (60),
characterized by the fact that it comprises: - a first portion (12) and a second portion (14) which are hinged together, and an elastic member (162) fixed on one (12) of said two parts, such that said two portions (12,14) are movable relative to each other between a first stable configuration of the hammer (10) in which they are held under the action of said resilient member (162), and a second configuration of the hammer (10) in which they are moved against the action of said resilient member (162). Marteau (10) selon la revendication 1, dans lequel l'inertie de la première partie (12) est supérieure à l'inertie de la deuxième partie (14).Hammer (10) according to claim 1, wherein the inertia of the first portion (12) is greater than the inertia of the second portion (14). Marteau (10) selon la revendication 1 ou 2, dans lequel ledit organe élastique (162) se présente sous la forme d'une lame flexible ayant une extrémité libre (1620) et une autre extrémité raccordée à un corps rigide (164) par l'intermédiaire d'une portion de raccord (166) courbée, ledit organe élastique (162), ledit corps (164) et ladite portion de raccord (166) constituant une pièce de rappel (16), dans laquelle ledit organe élastique (162) et ledit corps (164) sont sensiblement parallèles entre eux et l'extrémité libre (1620) dudit organe élastique (162) est apte à se rapprocher et à s'écarter dudit corps (164).A hammer (10) according to claim 1 or 2, wherein said resilient member (162) is in the form of a flexible blade having a free end (1620) and another end connected to a rigid body (164) by a intermediate of a curved connecting portion (166), said elastic member (162), said body (164) and said connecting portion (166) constituting a return piece (16), wherein said elastic member (162) and said body (164) is substantially parallel to each other and the free end (1620) of said resilient member (162) is adapted to move toward and away from said body (164). Marteau (10) selon la revendication 3, comportant, en outre, des moyens de fixation (124, 18, 1642, 126, 19, 1644, 128) pour une fixation rigide du corps (164) de la pièce de rappel (16) sur la première partie (12).Hammer (10) according to claim 3, further comprising fixing means (124, 18, 1642, 126, 19, 1644, 128) for a rigid attachment of the body (164) of the return piece (16) on the first part (12). Marteau (10) selon la revendication 4, dans lequel lesdits moyens de fixation (124, 18, 1642, 126, 19, 1644, 128) comportent une creusure (124) de la première partie (122) qui reçoit une portion dudit corps (164) de ladite pièce de rappel (16).The hammer (10) of claim 4, wherein said securing means (124, 18, 1642, 126, 19, 1644, 128) includes a recess (124) of the first portion (122) which receives a portion of said body ( 164) of said return piece (16). Marteau (10) selon la revendication 5, dans laquelle ladite creusure (124) reçoit également la portion de raccord (166) de la pièce de rappel (16).The hammer (10) according to claim 5, wherein said recess (124) also receives the connecting portion (166) of the return piece (16). Marteau (10) selon l'une quelconque des revendications 4 à 6, dans lequel lesdits moyens de fixation comportent, en outre, une vis de serrage (18) qui coopère avec un trou traversant (1642) dudit corps (164) et avec un trou fileté (126) ménagé dans le fond de ladite creusure (124).The hammer (10) according to any one of claims 4 to 6, wherein said securing means further comprises a clamping screw (18) which cooperates with a through hole (1642) of said body (164) and with a threaded hole (126) formed in the bottom of said recess (124). Marteau (10) selon l'une quelconque des revendications 1 à 7, dans lequel lesdites deux parties (12, 14) sont articulées entre elles par une liaison de type charnière (70).Hammer (10) according to any one of claims 1 to 7, wherein said two parts (12, 14) are hinged together by a hinge type connection (70). Marteau (10) selon la revendication 8, dans lequel ladite liaison de type charnière (70) comporte un axe d'articulation qui est matérialisé par une tige (72) d'un pivot d'articulation (71) rendu solidaire de la première partie (12).Hammer (10) according to claim 8, wherein said hinge type connection (70) comprises a hinge pin which is embodied by a rod (72) of a hinge pin (71) secured to the first part (12). Marteau (10) selon l'une quelconque des revendications 1 à 9, dans lequel le mécanisme (50) est un mécanisme de sonnerie et la première partie (12) comporte un bec (122) destiné à frapper un élément apte à vibrer (100) dudit mécanisme (50).A hammer (10) according to any of claims 1 to 9, wherein the mechanism (50) is a striking mechanism and the first portion (12) has a spout (122) for striking a vibratable member (100). ) of said mechanism (50). Marteau (10) selon l'une quelconque des revendications 1 à 10, dans lequel la deuxième partie (14) comporte une queue (142) apte à coopérer avec des butées (54, 56) du mécanisme (50).Hammer (10) according to any one of claims 1 to 10, wherein the second portion (14) comprises a shank (142) adapted to cooperate with stops (54, 56) of the mechanism (50). Marteau (10) selon l'une quelconque des revendications 1 à 11, dans lequel la deuxième partie (14) est apte à tourner autour d'un axe fixe (52) du mécanisme (50).Hammer (10) according to any one of claims 1 to 11, wherein the second portion (14) is rotatable about a fixed axis (52) of the mechanism (50). Marteau (10) selon l'une quelconque des revendications 1 à 12, dans lequel la deuxième partie (14) est dotée d'une butée (144) destinée à retenir l'organe élastique (162) lors du déplacement relatif des deux parties (12, 14).Hammer (10) according to any one of claims 1 to 12, wherein the second portion (14) is provided with a stop (144) for retaining the elastic member (162) during the relative movement of the two parts ( 12, 14). Marteau (10) selon la revendication 13, dans lequel ladite butée (144) se trouve dans le prolongement axial d'un palier (146) grâce auquel ladite deuxième partie (14) peut tourner autour dudit axe fixe (52).The hammer (10) of claim 13, wherein said stop (144) is in the axial extension of a bearing (146) by which said second portion (14) is rotatable about said fixed axis (52). Mécanisme d'horlogerie (50) pour une pièce d'horlogerie (60), caractérisé par le fait qu'il comporte un marteau (10) selon l'une quelconque des revendications 1 à 14.Clock mechanism (50) for a timepiece (60), characterized in that it comprises a hammer (10) according to any one of claims 1 to 14. Mécanisme d'horlogerie (50) selon la revendication 15, caractérisé par le fait qu'il est du type mécanisme de sonnerie, comportant un élément fixe (100) apte à vibrer lorsqu'il est frappé et un élément mobile (10) apte à frapper ledit élément fixe (100), dans lequel ledit élément mobile (10) est un marteau selon l'une quelconque des revendications 1 à 14.Clock mechanism (50) according to claim 15, characterized in that it is of the striking mechanism type, comprising a fixed element (100) able to vibrate when struck and a movable element (10) adapted to hitting said fixed member (100), wherein said movable member (10) is a hammer according to any one of claims 1 to 14. Mécanisme d'horlogerie (50) selon la revendication 15 ou la revendication 16, comportant, en outre, une butée fixe (54) et une butée élastique (56) qui coopèrent avec ledit marteau (10) lors du fonctionnement dudit mécanisme d'horlogerie (50).A timepiece mechanism (50) according to claim 15 or claim 16, further comprising a fixed stop (54) and a resilient stop (56) cooperating with said hammer (10) during operation of said clock mechanism (50). Pièce d'horlogerie (60), caractérisée par le fait qu'elle comporte un marteau (10) selon l'une quelconque des revendications 1 à 14 ou un mécanisme d'horlogerie (50) selon l'une quelconque des revendications 15 à 17.Timepiece (60), characterized in that it comprises a hammer (10) according to any one of claims 1 to 14 or a clockwork mechanism (50) according to any one of claims 15 to 17 .
EP08016192.0A 2007-10-10 2008-09-15 Striking mechanism Active EP2048548B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH15742007 2007-10-10

Publications (4)

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EP2048548A2 true EP2048548A2 (en) 2009-04-15
EP2048548A3 EP2048548A3 (en) 2016-11-30
EP2048548B1 EP2048548B1 (en) 2021-08-18
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EP2339412A2 (en) 2009-12-24 2011-06-29 Montres Breguet SA Chiming mechanism of a watch
EP2362279A1 (en) 2010-02-26 2011-08-31 Montres Breguet SA Chiming mechanism of a watch with active buffer counter spring
EP2463731A1 (en) * 2010-12-10 2012-06-13 Montres Breguet SA Chiming mechanism of a watch
CH704392A1 (en) * 2011-01-28 2012-07-31 Montres Breguet Sa striking mechanism of a hammer lock watch.
EP2767875A2 (en) 2013-02-15 2014-08-20 Richemont International S.A. Striking mechanism and timepiece provided with said striking mechanism
EP3070540A1 (en) * 2015-03-18 2016-09-21 Glashütter Uhrenbetrieb GmbH Hammer with resilient adjustable stop
JP2017067774A (en) * 2015-09-28 2017-04-06 ランゲ ウーレン ゲーエムベーハー Hammer mechanism
EP2660662A3 (en) * 2012-05-02 2018-01-17 Patek Philippe SA Genève Alarm mechanism
EP3543801A1 (en) * 2018-03-21 2019-09-25 Montres Breguet S.A. Timepiece chiming mechanism

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EP3663869B1 (en) 2018-12-06 2021-06-16 Montres Breguet S.A. Timepiece chiming mechanism with suspended hammer
CN111897199B (en) * 2020-08-28 2021-05-04 芜湖市创源新材料有限公司 Electric drive awakens alarm clock up

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EP2339412A3 (en) * 2009-12-24 2016-08-03 Montres Breguet SA Chiming mechanism of a watch
US8514669B2 (en) 2009-12-24 2013-08-20 Montres Breguet Sa Strike mechanism for a watch
EP2339412A2 (en) 2009-12-24 2011-06-29 Montres Breguet SA Chiming mechanism of a watch
EP2362279A1 (en) 2010-02-26 2011-08-31 Montres Breguet SA Chiming mechanism of a watch with active buffer counter spring
US20110211427A1 (en) * 2010-02-26 2011-09-01 Montes Breguet S.A. Striking mechanism for a watch with an active damper counter-spring
JP2011180140A (en) * 2010-02-26 2011-09-15 Montres Breguet Sa Striking mechanism for watch with active damper counter-spring
US8547803B2 (en) 2010-02-26 2013-10-01 Montres Breguet S.A. Striking mechanism for a watch with an active damper counter-spring
EP2463731A1 (en) * 2010-12-10 2012-06-13 Montres Breguet SA Chiming mechanism of a watch
US8537642B2 (en) 2010-12-10 2013-09-17 Montres Breuguet SA Watch striking mechanism
CH704392A1 (en) * 2011-01-28 2012-07-31 Montres Breguet Sa striking mechanism of a hammer lock watch.
US8514670B2 (en) 2011-01-28 2013-08-20 Montres Breguet Sa Striking mechanism for a watch with a hammer locking device
EP2660662A3 (en) * 2012-05-02 2018-01-17 Patek Philippe SA Genève Alarm mechanism
EP2767875A2 (en) 2013-02-15 2014-08-20 Richemont International S.A. Striking mechanism and timepiece provided with said striking mechanism
EP3070540A1 (en) * 2015-03-18 2016-09-21 Glashütter Uhrenbetrieb GmbH Hammer with resilient adjustable stop
US10067474B2 (en) 2015-03-18 2018-09-04 Glashütter Uhrenbetrieb GmbH Striking mechanism comprising a hammer with an elastic adjustable stop
JP2017067774A (en) * 2015-09-28 2017-04-06 ランゲ ウーレン ゲーエムベーハー Hammer mechanism
CN106896703A (en) * 2015-09-28 2017-06-27 朗格钟表有限公司 Striking mechanism mechanism
CN106896703B (en) * 2015-09-28 2019-12-13 朗格钟表有限公司 Time telling device mechanism
EP3543801A1 (en) * 2018-03-21 2019-09-25 Montres Breguet S.A. Timepiece chiming mechanism
US11630421B2 (en) 2018-03-21 2023-04-18 Montres Breguet S.A. Timepiece striking mechanism

Also Published As

Publication number Publication date
EP2048548B8 (en) 2022-02-16
EP2048548A3 (en) 2016-11-30
EP2048548B1 (en) 2021-08-18
CN101441435B (en) 2013-10-23
CN101441435A (en) 2009-05-27

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