Movement including striking device
The clock movement's striking device with a bounce prevention mechanism addresses the issue of hammer bounces by allowing a single partial bounce, ensuring efficient energy transfer and high sound quality through a controlled hammer rotation.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- MONTRES BREGUET SA
- Filing Date
- 2025-11-26
- Publication Date
- 2026-07-07
Smart Images
Figure 2026113409000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a clock movement including a striking device. Conventionally, a striking device is formed by a hammer, a gong, a spring that drives the body of the hammer to perform each strike, and a hammer actuation mechanism for winding up the hammer before each strike. [Background technology]
[0002] Clock movements containing striking mechanisms have been known for a long time. This is a clock complication that requires a great deal of clockmaking know-how. A common technical challenge is to reduce the number and amplitude of bounces by dampening the hammer after striking. However, despite well-known solutions, even a single bounce with a relatively small amplitude causes problems because such a bounce rapidly disrupts the resonant / vibrating gong. In particular, a full bounce can dampen the sound produced by the strike, especially if the striking beak comes into contact with the gong again due to a phase shift relative to the lateral movement of the vibrating gong. This is audible to the user and is detrimental to the tone quality and intensity of the sound produced by the gong.
[0003] Conventional striking devices are equipped with a counter-spring to dampen the hammer after striking and limit its bounce. As its name suggests, the counter-spring acts on the hammer during the final phase of its journey toward the gong, braking the hammer to a sufficient degree to resist the movement toward the gong generated by the drive spring. This counter-spring is designed to be highly rigid and is positioned so that the final phase is fairly short, so as not to excessively reduce the hammer's kinetic energy before it strikes the gong. However, the counter-spring needs to act on the hammer early enough to avoid multiple bounces, ideally resulting in only a single partial bounce if possible. The counter-spring also defines the hammer's locked position, which keeps the beak relatively close to the gong, if not touching it, regardless of whether the gong is vibrating or not. As a result, installing and adjusting the counter-spring configuration in a striking device is a difficult and time-consuming task, even for a skilled watchmaker.
[0004] Another major drawback of the counter-spring is that, by strongly opposing the hammer's movement in the final phase, it reduces the amount of energy that can be transferred from the hammer to the gong. Consequently, this loss of mechanical energy degrades the performance of the striking device, causing it to lose a predetermined amount of mechanical energy before each strike.
[0005] In this text, the term "strike" is interpreted to mean the short moment after the hammer is hoisted up when it strikes the gong, generally near its anchoring, and the hammer body transmits a predetermined amount of mechanical energy to excite the gong. The term "bounce" is interpreted to mean the return motion of the hammer body after the strike, which continues to move back toward the gong until the body touches the gong again. Therefore, "partial bounce" is interpreted to mean a bounce by the hammer body that indicates a return motion but stops before such an event (re-contact) occurs, and thus does not subsequently re-contact the gong. [Overview of the Initiative]
[0006] The present invention aims to provide solutions to the above-mentioned problems of the prior art. In particular, the present invention aims to provide a clock movement equipped with a striking device in which the hammer performs only one partial bounce after striking (i.e., does not perform a full bounce), without braking the hammer body during its movement from the terminal position (when the hammer is loaded) to the position of contact with the gong (the position in which the striking beak contacts the gong during striking), and with low (preferably substantially zero) mechanical energy consumption from the energy source associated with the striking device. Accordingly, the present invention is designed to provide a striking device that can achieve maximum efficiency between the mechanical energy supplied to the hammer actuation mechanism that winds the hammer before each strike and the energy transmitted to the gong by the hammer, while at the same time enabling the gong to produce a very high sound quality, in particular, the vibration of the gong that is not attenuated by the bounce.
[0007] For this purpose, the present invention relates to a movement incorporating a striking device including a gong, a hammer rotatably mounted around a first axis of rotation, and a spring for rotationally driving the hammer. The hammer has a body with a striking beak positioned in a region at a certain distance from the first axis of rotation. The drive spring is positioned to provide a driving force to the body of the hammer so as to rotate the body of the hammer in a first direction that brings the striking beak closer to the gong and allows the striking beak to strike the gong. The striking device includes a hammer actuation mechanism for winding up the hammer so as to load the drive spring and then release the hammer so that the hammer strikes the gong under the action of the driving force by rotating the body of the hammer in a second direction opposite to the first direction, from a locked position of the body of the hammer with the striking beak separated from the gong to the end position of the body. A notable feature of the striking device is that it includes a bounce prevention device arranged so as to alternately be in a first configuration and a second configuration. The first configuration is such that the bounce prevention device stops the movement of the hammer body in a first rotational direction, which begins at at least a first intermediate position between the locked position and the terminal position of the body, before the striking beak can come into contact with the gong, regardless of whether the gong is vibrating or not. The second configuration differs from the first configuration in that the bounce prevention device does not stop the rotation of the hammer in the first rotational direction between the end position of the main body and the contact position where the striking beak reaches the gong. However, this is conditional on the bounce prevention device being in this second configuration when the main body shifts to pass through a second intermediate position between the locked position and the end position. The bounce prevention device does not brake the main body of the hammer at least between the second intermediate position and the contact position, preferably between the end position and the contact position.
[0008] The striking device is positioned such that immediately after each strike, the hammer body undergoes a return motion, rising to at least a first intermediate position without reaching its terminal position. The striking device is positioned such that the bounce prevention device is as follows: In other words, the bounce prevention device is maintained in the first configuration when the hammer is locked, and consequently the main body is in the locked position. Each time the hammer is wound up by the actuation mechanism, or after the hammer is released and before the body of the hammer reaches the second intermediate position, it is brought into the second configuration. Subsequently, during the recovery operation of the main unit, it is returned to the first configuration. The first configuration is then maintained until the hammer is locked again or wound up again by the operating mechanism. Consequently, the aforementioned body receives a single partial bounce after each impact.
[0009] In the main embodiment, the bounce prevention device includes a bounce prevention component rotatably mounted on the body of the hammer around a second axis of rotation, and a first stopper attached to a support on the hammer, which are arranged as follows. When the main body shifts to pass through the second intermediate position, if the bounce prevention component is in the second position or second position range relative to the hammer body, and consequently the bounce prevention device is in the second configuration, the bounce prevention component will not come into contact with the first stopper when the main body rotates between the terminal position and the contact position. When the bounce prevention component is in a first position or a first position range relative to the hammer body, and consequently when the bounce prevention device is in a first configuration, the hammer body is stopped by striking a first stopper when the bounce prevention component rotates in the first direction, starting at least at a first intermediate position and before reaching the terminal position. • When the hammer is locked, the bounce-prevention component is pressed against the first stopper.
[0010] In a typical embodiment, the bounce prevention component has its center of gravity at a certain distance from the second axis of rotation and has a contact surface with the first stopper. This contact surface is configured to stop the hammer body when the bounce prevention device is in the first configuration by abutting against the first stopper when the body is rotating in the first direction, starting from at least a first intermediate position. As a result, the body is held in the locked position even when the hammer is locked.
[0011] In the first embodiment, the bounce prevention device is arranged such that the shift of the bounce prevention component from the first position or position range to the second position or position range occurs when the body rotates between the maximum and end positions of the return movement while the hammer is being wound up by the actuation mechanism.
[0012] In a second embodiment, the bounce deterrent is positioned such that the shift of the bounce deterrent from the first position or first position range to the second position or second position range occurs after the hammer is released and before the hammer body reaches a second intermediate position. The bounce deterrent is positioned such that, in the first position or first position range, the center of gravity is at a certain distance from a geometric straight line extending through the second axis of rotation, which is perpendicular to the line connecting the first and second axes of rotation. The bounce deterrent is subjected to a first apparent torque relative to the body. This torque is due to the acceleration experienced by the body, generated by the driving force applied to the body by the drive spring, and consequently to the acceleration experienced by the bounce deterrent on the second axis of rotation. The bounce prevention device is positioned such that a first apparent torque rotates the bounce prevention component to a second position or second position range, and it remains in this second position or second position range until the contact surface of the bounce prevention component moves beyond the first stopper during the rotation of the body between the terminal position and the contact position.
[0013] In an advantageous embodiment, the shift of the anti-bounce component from the second position or the second position range to the first position or the first position range is caused (released) by the impact of the gong by the body of the hammer. The anti-bounce component is arranged in the second position or the second position range such that the center of gravity is at a certain distance from a geometric straight line extending through the second rotation axis and orthogonal to the straight line connecting the first rotation axis and the second rotation axis. The anti-bounce component receives a second apparent torque with respect to the body. This torque is due to the reaction force received by the body when the striking jaw hits the gong and stops, and ultimately due to the reaction force from the gong received by the anti-bounce component at the second rotation axis. The anti-bounce device is arranged such that the second apparent torque rotates the anti-bounce component to the first position or the position range where it remains during the return movement of the body.
Brief Description of the Drawings
[0014] The present invention will be described in detail below with reference to the accompanying drawings. The drawings are given as non-limiting examples.
[0015] [Figure 1] FIG. 14 is a partial plan view of a timepiece movement to which a striking device according to a first embodiment of the present invention is attached. [Figure 2a] FIGS. 2a to 2h show various successive states in the striking device of FIG. 1 from when the hammer is wound up, followed by an impact on the gong, until finally the hammer returns to the locked state. [Figure 2b] FIGS. 2a to 2h show various successive states in the striking device of FIG. 1 from when the hammer is wound up, followed by an impact on the gong, until finally the hammer returns to the locked state. [Figure 2c] FIGS. 2a to 2h show various successive states in the striking device of FIG. 1 from when the hammer is wound up, followed by an impact on the gong, until finally the hammer returns to the locked state. [Figure 2d]Figures 2a to 2h show the various sequential states in the striking device of Figure 1, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked position. [Figure 2e] Figures 2a to 2h show the various sequential states in the striking device of Figure 1, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked position. [Figure 2f] Figures 2a to 2h show the various sequential states in the striking device of Figure 1, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked position. [Figure 2g] Figures 2a to 2h show the various sequential states in the striking device of Figure 1, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked position. [Figure 2h] Figures 2a to 2h show the various sequential states in the striking device of Figure 1, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked position. [Figure 3] A partial plan view of a clock movement equipped with a striking device according to a second embodiment of the present invention is shown. [Figure 4a] Figures 4a to 4g show various sequential states in the striking device of Figure 3, corresponding to the state shown in Figure 3, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked state. [Figure 4b] Figures 4a to 4g show various sequential states in the striking device of Figure 3, corresponding to the state shown in Figure 3, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked state. [Figure 4c] Figures 4a to 4g show various sequential states in the striking device of Figure 3, corresponding to the state shown in Figure 3, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked state. [Figure 4d]Figures 4a to 4g show various sequential states in the striking device of Figure 3, corresponding to the state shown in Figure 3, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked state. [Figure 4e] Figures 4a to 4g show various sequential states in the striking device of Figure 3, corresponding to the state shown in Figure 3, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked state. [Figure 4f] Figures 4a to 4g show various sequential states in the striking device of Figure 3, corresponding to the state shown in Figure 3, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked state. [Figure 4g] Figures 4a to 4g show various sequential states in the striking device of Figure 3, corresponding to the state shown in Figure 3, from when the hammer is wound up, to when it strikes the gong, and finally when the hammer returns to the locked state. [Figure 5] This is a schematic diagram of the various phases involved in the process of striking the gong and generating a single, partial bounce that follows the strike. [Figure 6] Figures 6, 7, and 8 show three variations of the first embodiment. [Figure 7] Figures 6, 7, and 8 show three variations of the first embodiment. [Figure 8] Figures 6, 7, and 8 show three variations of the first embodiment. [Modes for carrying out the invention]
[0016] A first embodiment of the watch movement according to the present invention will be described below with reference to Figures 1 and 2a to 2h. First, a main embodiment of the present invention, covering the first and second embodiments, will be described. The second embodiment will be described in detail later with reference to Figures 1 to 2h related to the first embodiment (the second embodiment will be presented only after the first embodiment for clarity). This main embodiment is a preferred embodiment that falls within the general scope of the present invention as defined by the general features of claim 1. The general features of claim 1 will also be described below with reference to the drawings related to the first embodiment (for clarity).
[0017] Generally, movement 2 incorporates a striking device 4 that includes a gong 10, a hammer 6 rotatably mounted around a first axis of rotation 14, and a spring 12 for rotationally driving the hammer. The hammer 6 has a body 8 with a striking beak 9 located in a region at a certain distance from the first axis of rotation 14. Conventionally, the striking device 4 includes a hammer operating mechanism. The hammer operating mechanism rotates the hammer body from a locked position (Figure 1) where the striking beak 9 for winding up the hammer is away from the gong 10, in a second direction opposite to the first direction, to the end position of the body (Figure 2a), loads the drive spring 12, and then releases the hammer so that it can strike the gong under the action of the driving force. Note that the operating mechanism is not shown in the figures. The drive spring 12 applies a driving force F by pressing, for example, a pin 16 fixed to the body of the hammer 6 against the body 8 of the hammer 6. E The body is positioned to allow for this action. This causes the main body 8 to rotate in a first direction, bringing the striking beak portion 9 closer to the gong 10 (Figure 2b), allowing the gong to be struck by the striking beak portion (Figure 2c).
[0018] According to the present invention, the striking device 4 generally includes a bounce prevention device 5, which will be described in detail below, and the devices are arranged alternately in the following configuration. That is, a first configuration (particularly shown in Figures 2f, 2g, and 2h) in which the bounce prevention device 5 stops the movement of the hammer body 8 in a first rotational direction, which begins at at least a first intermediate position (substantially Figure 2g) between the locked position (Figure 1) and the end position of the body (Figure 2a), before the striking beak portion 9 can come into contact with the gong 10, regardless of whether the gong 10 is vibrating or not. The second configuration (particularly shown in Figures 2a and 2b), unlike the first configuration, is such that the bounce prevention device 5 does not stop the rotation of the hammer 6 in the first rotational direction between the end position and the contact position on the body 8 where the striking beak reaches the gong 10 (Figure 2c). However, this second configuration is possible when the body 8 shifts so that it passes through a second intermediate position (substantially Figure 2b) located between the locked position and the end position. The bounce prevention device 5 does not brake the body 8 of the hammer 6 at least between the second intermediate position and the contact position, preferably between the end position and the contact position.
[0019] The striking device 4 is positioned such that after each strike, the body 8 of the hammer 6 undergoes a return movement (Figures 2d and 2e) and rises to at least a first intermediate position without reaching the terminal position. Note that the body does not reach the terminal position during the return movement because it transmits most of its mechanical energy to the gong when striking. Furthermore, the striking device is positioned such that the bounce prevention device 5 is as follows. In other words, the bounce prevention device 5 is maintained in the first configuration when the hammer 6 is locked, and consequently the main body 8 is in the locked position. Each time the hammer is wound up by the operating mechanism (first embodiment), or after the hammer is released and before the hammer body 8 reaches the second intermediate position (second embodiment, which will be described in detail later), it is configured to a second configuration. Subsequently, during the recovery operation of the main unit 8, it is returned to the first configuration. Furthermore, the first configuration is maintained until the hammer is locked again or wound up again by the operating mechanism.
[0020] A general feature of the present invention is that the body 8 receives a single, partial bounce after each impact. This is a very noteworthy result, and the main features for achieving it are described below.
[0021] In the main embodiment, which encompasses the first and second embodiments (the latter will be described in detail later, so to avoid compromising clarity of explanation, no references to the drawings of the second embodiment will be made here), the bounce prevention device 5 includes a bounce prevention component 20 rotatably mounted on the body 8 of the hammer 6 around a second rotation axis 22, and a first stopper 33 attached to a support portion on the hammer (ground plate 3 in the figure), which are arranged as follows. The bounce prevention component 20 is in a second position (from Figure 2a to Figure 2c) or a second position range relative to the main body 8 of the hammer 6 when the main body 8 shifts to pass through a second intermediate position (Figure 2b), and consequently the bounce prevention device 5 is in a second configuration, in which case the bounce prevention component 20 does not come into contact with the first stopper 33 when the main body 8 rotates between the terminal position (Figure 2a) and the contact position (Figure 2c). When the bounce prevention component 20 is in a first position (Figures 2f to 2h) or a first position range relative to the hammer body 8, and the bounce prevention device 5 is in the first configuration, the hammer body 8 is stopped when the bounce prevention component 20 abuts against the first stopper 33, and at this time the hammer body 8 is rotating in the first direction, starting at at least a first intermediate position (Figure 2g), and is below the terminal position. When the hammer 6 is locked, the bounce prevention component 20 is pressed against the first stopper 33.
[0022] The main embodiment is further characterized in that the bounce prevention device 5 includes a flexible element 24. The flexible element 24 is fixed to the body 8 of the hammer 6 and is arranged to interact with the bounce prevention component 20.
[0023] In a first major modification of the first embodiment of the watch movement 2 according to the present invention, the flexible element 24 of the bounce prevention device 5 is fixed to the main body 8, and the flexible element 24 includes a portion defining a recess 26. The recess 26 has a non-tangential orientation with respect to the second axis of rotation 22. This non-tangential orientation is preferably angularly closer to a radial line extending through a point at the bottom of the recess than to a tangent line extending through the same point. The recess 26 defines a stable position for the bounce prevention component 20, which includes a pin 28 forming a support component for the flexible element. The pin has an axial surface that the flexible element can press against. In one modification, the support component may be a protruding portion integral with the base plate forming the bounce prevention component. In another modification, the support component may be part of the base plate, its side surface defining an axial support surface for the flexible element, and the flexible element is positioned in the same general plane as the base plate.
[0024] The pin 28 is positioned so that it can be at least partially accommodated within the recess 26 with substantially no play when the bounce-preventing component 20 is in the stable position defined by the recess, and so that the portion of the flexible element can be elastically displaced to exit the recess under the action of the torque that the bounce-preventing component may experience. In fact, in two specific phases of the sound generation process by the percussion device 4, the bounce-preventing component is subjected to a torque of a strength that allows it to shift from the first position or first position range to the second position or second position range, and in the reverse direction. The direction of the torque for the reverse shift is opposite to the direction of the torque during the shift described above. It should also be noted that the strength of the torque generally differs depending on its direction in the sound generation process. The orientation of the recess 26 is generally defined by a midline between two flanks (sides) rising from the bottom of the recess.
[0025] In the illustrated modification, the flexible element 24 is formed of a spring wire extending in a geometric plane and has a substantially straight first elastic portion and a second portion on its free end side having a bend followed by an oblique segment. Thus, the second portion is less elastic than the first portion. In particular, the recess 26 has a V-shape defined by two oblique segments of the spring wire. In the first major modification, the bounce deterrent is in the first or second position when it is in the stable position defined by the recess of the flexible element. The portion of the flexible element is configured such that when the recess defines the first position, the bounce deterrent 20 may be actuated to the second position or a second position range under the action of the torque, and when the recess defines the second position, the bounce deterrent may be actuated to the first position or a first position range under the action of the torque. In the illustrated modification, the recess 26 defines the second position.
[0026] Two variations are described below. In the first particular variation shown in Figure 6, the aforementioned portion of the flexible element is the first portion, and the recess 26 is the first recess. In the bounce deterrent 5a, the flexible element 24a attached to the body 8 of the hammer 7 includes a second portion defining a second recess 27, which has a non-tangential orientation with respect to a second axis of rotation 22 and is preferably angularly closer to a radial line extending through a point at the bottom of the second recess than to a tangent line extending through said point. The second recess 27 defines a second stable position for the bounce deterrent, and the flexible element 24a is positioned such that a pin 28 can be at least partially accommodated in the second recess with substantially no play when the bounce deterrent 20 is in the second stable position. The pin 28 can elastically move the second portion of the flexible element under the action of a second torque opposite to the torque that the bounce deterrent may experience to exit the second recess 27. The first recess 26 defines the first position of the bounce-preventing component. The second recess 27 defines the second position of the bounce-preventing component when the pin 28 is alternately accommodated in the first recess 26 and the second recess 27. The second portion of the flexible element is configured to bring the bounce-preventing component 20 to the first position under the action of a second torque. As already mentioned, the first and second torques appear during the sound generation process by the percussion device of the present invention.
[0027] In a second specific modification of the bounce de-bounce device 5b shown in Figure 7, the flexible element 24b includes a recess 27a. The recess 27a is configured to have a flank 27b. The flank 27b forms a stopper for the pin 28 in the rotational direction of the bounce de-bounce component 20, opposite to the rotational direction for moving the bounce de-bounce component 20 to a second position or second position range (in the typical case) when the recess 27a defines a first position or first position range, or alternatively, forms a stopper for the pin 28 in the rotational direction of the bounce de-bounce component 20, opposite to the rotational direction for moving the bounce de-bounce component 20 to a first position or first position range when the recess defines a second position or second position range. This stopper flank 27b limits the angular movement of the bounce de-bounce component 20 by counteracting the torque that brings the pin 28 into the recess during the shift of the bounce de-bounce component from one position to another. This modification eliminates the need to add a pin or other protrusion to the body 8 of the hammer 6b to stop the bounce deterrent from rotating under the torque (which can be very large) that shifts the bounce deterrent from the second position to the first position. Therefore, this first modification is particularly advantageous when the recess defines the first position of the bounce deterrent, as shown in Figure 7.
[0028] In a second major variation, the bounce deterrent includes a flexible element 24 fixed to the main body 8. The flexible element 24 has a segment 25 that allows the bounce deterrent to rotate tangentially by applying a restoring force generated by a loaded flexible element to a pin 28 included in the bounce deterrent 20 in a tangential direction with respect to a second axis of rotation 22. The main body 8 includes a second stopper 30 positioned to stop the tangential rotation of the bounce deterrent 20 at the first position (Figure 1) or alternatively at the second position. Preferably, the flexible element 24 is positioned to return the bounce deterrent to the first position or alternatively to a second position defined by the second stopper, and the segment 25 is positioned to apply a restoring force to the pin 28 even when the bounce deterrent is in this first position (Figure 1) or second position, thereby providing a relatively stable first or second position.
[0029] In a third specific variant, which is included in the second major variant and shown in Figure 8, the segment 25 is the first segment and the restoring force is the first restoring force. The bounce deterrent 5c includes a flexible element 24c having a second segment 25a that can rotate the bounce deterrent 20 in a second tangential direction by applying a second restoring force to the pin 28 in a second tangential direction opposite to the tangential direction. The body 8 of the hammer 6c includes a third stopper 31 positioned to stop the rotation of the bounce deterrent in the second tangential direction at the second position (Figure 8) or the first position of the bounce deterrent. Preferably, the flexible element 24c is positioned such that the second segment 25a exerts a second restoring force on the pin in order to return the bounce-preventing component to a second or first position defined by the third stopper, and the second segment 25a also exerts a second restoring force on the pin when the bounce-preventing component is in this second or first position.
[0030] An advantageous modification of the first embodiment is a combination of the first and second main modifications described above, and includes the modification shown in Figure 1. The flexible element 24 has a segment 25 that exerts a restorative force generated by the loaded flexible element on the pin 28 in a tangential direction with respect to the second axis of rotation 22. The body 8 includes a second stopper 30. The second stopper 30 is positioned to stop the tangential rotation of the bounce-preventing component 20 at the first position of the bounce-preventing component when the recess 26 defines a second position (Figure 1), or at the second position when the recess alternatively defines the first position. Preferably, the flexible element 24 is positioned such that the segment 25 continues to exert a restorative force on the pin 28 when the bounce-preventing component is in the first or second position. In this case, the first or second position is a stable position for the bounce-preventing component. Otherwise, the segment and the second stopper define the first or second position range for the bounce-preventing component. In the illustrated modification, the second stopper 30 defines the first position of the bounce-preventing component 20, where the recess 26 defines the second position of the bounce-preventing component, and both the first and second positions are stable positions.
[0031] In a preferred modification of the first embodiment, and further in a preferred modification of the second embodiment to be described later, the bounce prevention component 20 is positioned at a center of gravity C at a certain distance from the second axis of rotation 22. M The hammer has a protruding part 21 that defines a contact surface 21a with the first stopper 33. This contact surface is configured to stop the body 8 of the hammer 6 when the hammer is in a first configuration during the rotation in the first direction, starting from at least a first intermediate position. This stopping is due to the striking beak abutting against the first stopper 33 before it touches the gong 10. The contact surface is also configured to maintain the body in the locked position when the hammer is locked.
[0032] Returning to the advantageous modification shown in Figure 1, some specific features of this modification will now be described with reference to Figures 1 and 2a through 2h. The first stopper 33 is movable as it is supported by the flexible blade 32 and is configured to retract instantaneously under the action of a bounce-preventing component 20 that instantaneously presses against the first stopper during the return movement of the body 8 during the only partial bounce after impact (Figure 2e). A pin 34 fixed to the base plate 3 holds the flexible blade 32 in a specific position when no force is applied to the flexible blade. Preferably, the flexible blade is under slight stress when pressed against the pin 34. In this example, the first stopper 33 is formed by the end segment of the flexible blade after the bend on its free end side, which preferably has an angle of less than 90° with respect to the substantially straight portion. As shown in Figure 1, when the hammer 6 is locked, the hammer body 8 is in its locked position, and the bounce prevention component 20 is in the first position, which is pressed against the stopper 30 that defines this first position.
[0033] According to the first key feature of the first embodiment, the bounce prevention device 5 is positioned such that the shift of the bounce prevention component 20 from the first position or first position range (a state in which the bounce prevention device is in a first configuration, which corresponds to the first configuration of the hammer 6 in the illustrated modification) to the second position or second position range (a state in which the bounce prevention device is in a second configuration, which corresponds to the second configuration of the hammer 6 in the illustrated modification) occurs when the body rotates between the maximum and end positions of the return operation while the hammer is being wound up by the actuation mechanism. In the illustrated modification, the bounce prevention component 20 shifts from the first position (a stable position defined by the pin 30 defining the segment 25 of the wire spring 24 and the second stopper) to the second position (a stable position defined by the V-shaped recess 26 formed by the end portion of the wire spring 24) during the final phase of hammer winding. In this final phase, the protruding portion 21 of the bounce prevention component 20 abuts against the pin 38 fixed to the base plate 3, and subsequently receives a torque in the opposite direction to the torque received by the main body 8 when the hammer is wound up. This allows the bounce prevention component to overcome the torque generated by the restoring force exerted on it by the segment 25 of the flexible element 24, enabling it to move from the first position to the second position as shown in Figure 2a.
[0034] When the hammer 6 is fully wound up and the bounce-prevention component is in a substantially second stable position, the hammer is released, and a driving force F from the drive spring 12 presses against the pin 16 on the hammer body 8. EThe hammer 6 is accelerated with a relatively high level of kinetic energy until it reaches the gong 10, and transmits some, preferably most, of this energy to the gong. The gong is excited and is therefore allowed to vibrate and produce the desired sound. In the second position, the hammer 6 is neither stopped nor braked between the fully wound-up end position and the contact position where the beak portion 9, shown in Figure 2c, touches the gong 10. This is noteworthy and highly advantageous. As seen in Figure 2b, the hammer 6 (particularly its body 8) is neither hindered nor braked while the hammer body rotates toward the gong (defining a first direction of rotation) as the projection 21 of the bounce-preventing component 20 moves toward the first stopper 33, while the bounce-preventing component is in its second position and thus the bounce-preventing device is in its second configuration. The bounce-preventing component does not come into contact with the first stopper 33 during this rotation between the end position of the body and the contact position with the gong. Figure 2b shows the hammer body 6 in a substantially intermediate position (the "second intermediate position" mentioned above). In general, in the main embodiment, the bounce prevention component is in the second position in the latest state, so the bounce prevention device in this second configuration avoids contact with the first stopper.
[0035] According to a second key feature of the first embodiment, the shift of the bounce-preventing component from the second position or second position range to the first position or first position range is caused by the hammer body (specifically, the striking beak portion 9) striking the gong (see Figure 2c). In the second position or second position range, the center of gravity C of the bounce-preventing component is M However, it is positioned such that it passes through the second axis of rotation 22 and is at a certain distance from a geometric line perpendicular to the line connecting the first axis of rotation 14 and the second axis of rotation. The bounce prevention component 20 receives an apparent torque on the main body 8, which is referred to as the "second apparent torque" mentioned above. This torque is the reaction force F generated by the gong 10 that the main body 8 and, consequently the bounce prevention component, receive at the level of the second axis of rotation 22 when the striking beak portion 9 strikes the gong. RThe center of gravity C caused by this M Apparent force F A The bounce prevention device is configured such that a second apparent torque rotates the bounce prevention component (Figure 2c) to a first position (Figure 2d) or (in another modification) a first position range, which it remains in during the return movement of the main body that occurs immediately after the impact (Figures 2d to 2f). The consequence of the second main feature is as follows: The bounce prevention component 20 remains in the first position during the return movement that occurs during a single (partial) bounce after the impact. Note that the apparent torque acting on the bounce prevention component is relatively strong. The bounce prevention component 20 thus shifts from the second position to the first position almost simultaneously with the impact (Figure 2d), and the bounce prevention component strikes the stopper 30 at a high angular velocity, thereby dissipating sufficient energy from the bounce prevention component 20 and preventing it from returning to the second position.
[0036] As already shown, when the body 8 returns during a single partial bounce after a strike, the stopper 33, supported by the flexible blade 32, momentarily retracts under the action of the bounce-preventing component 20, which presses laterally against the stopper (Figure 2e). The return movement continues until the protruding portion 21 of the bounce-preventing component moves in a second rotational direction opposite to the first rotational direction, so as to move beyond the stopper 33, until it reaches the maximum position (Figure 2f) where the body 8 is located at least in a first intermediate position (Figure 2g). The rotational movement of the body 8 in the first rotational direction returning from this first intermediate position to the gong 10 is stopped by the stopper 33 before the striking beak portion 9 can make contact with the gong, regardless of whether the gong is vibrating or not, while the bounce-preventing component is still in the first position and, consequently, the bounce-preventing device is in the first configuration. The striking device (specifically the bounce prevention device 5) is positioned so that the hammer body 8 reaches at least the first intermediate position during the return movement (when the bounce prevention component 20 is in the first position and the hammer is stopped when rotating in the first direction), but does not reach the terminal position. For this purpose, the residual energy retained by the hammer after striking is adjusted. Preferably, to achieve a certain degree of functional safety, the bounce prevention device is positioned so that the return movement reaches a maximum position (Figure 2f) that is above the first intermediate position. In the first main embodiment, the second intermediate position of the body 8 is different from the first intermediate position of the body (substantially shown in Figure 2g). The second intermediate position corresponds to a second angular position of the body that is further from the contact position of the body (Figure 2c) than the first intermediate position which corresponds to the first angular position of the body.
[0037] The hammer is locked again after a short stabilization period (Figure 2h) only if the hammer operating mechanism has not resumed loading the hammer for the next strike before the hammer is fully locked. The first stopper is supported by a flexible element, which in the illustrated modification has a certain degree of flexibility, particularly in the angular direction with respect to the first rotation axis 14. The bounce prevention device 5 is thus positioned, and in particular, the locking position provided for the main body 8 is selected such that, despite the elastic properties of the stopper 33 and its support portion 32, the striking beak portion 9 cannot come into contact with the vibrating gong 10, and even less so in the non-excited / non-vibrating state.
[0038] It should be noted that in other embodiments, only the first major feature or only the second major feature described above is assumed.
[0039] Referring to Figures 3 to 5, a second embodiment of the watch movement according to the present invention will be described below. Essentially, elements common to both embodiments, which are included in the main embodiment described above, will not be repeated in detail, and only the differences from the first embodiment will be described.
[0040] Movement 42 includes a striking device 44 that differs from the striking device 4 already described in its arrangement and function of the bounce prevention device 45. The general function remains the same. In particular, the bounce prevention device prevents the hammer from bouncing completely after a strike and prevents it from contacting the gong again before a new strike is made in a manner controlled by the striking device.
[0041] The bounce prevention device 45 forming the striking device 44 includes a bounce prevention component 20a attached to the body 8 of the hammer 7. This is similar to the bounce prevention component 20 of the first embodiment, the only difference being the positioning of the pin 28. The pin 28 forms a support component for the flexible blade 48. The flexible blade 48 is fixed to the body 8 of this bounce prevention component to form the flexible element of the main embodiment. Thus, the bounce prevention component 20a has a center of gravity C at a certain distance from the second axis of rotation 22. M The first stopper 46 has a projection 21 that defines a contact surface 21a with the first stopper 46. The first stopper 46 is rigidly attached to the base plate 3. The stopper 46 is fixed to the base plate which forms a support for the striking device (particularly for the hammer). That is, in the second embodiment, the shift of the bounce prevention component 20a defined above from the second position to the first position is not caused by the strike, but occurs during or immediately after the strike. The shift in question is related to the transition of the bounce prevention device 45 from the second configuration to the first configuration defined above. After the transition, the bounce prevention device remains in the first configuration until the hammer is stopped by the first stopper 46 during the only partial bounce following each strike in the movement of the body toward the gong (which defines the first rotational direction of this body of the hammer). In other words, during the shift in question, the bounce prevention device returns to a first configuration and remains in this first configuration until the hammer is locked again or wound up by the actuation mechanism.
[0042] According to the first specific feature of the second embodiment, the anti-bounce device 45 does not define a stable position with respect to the second position of the anti-bounce component. In fact, as will be described below with reference to FIGS. 4a to 4g, the anti-bounce component dynamically shifts from the first position to the second position range (which substantially has a limit position defined by the rigidity of the flexible blade or optionally by a limiting stopper (for example, the part that fixes the flexible blade 48 to the floor 3)), and then returns to the first position range at the latest during the impact. According to the second specific feature of the second embodiment, due to the first stopper 46 fixedly arranged on the floor 3, the aforementioned shift of the anti-bounce component 20a from the second position or the second position range to the first position or the first position range occurs during the return operation after the body 8 has moved beyond the first intermediate position (FIG. 4f).
[0043] FIG. 3 shows the striking device 44 in a non-active state where the hammer 7 is locked. The hammer body 8 is in a locked position corresponding to the first position. The body 8 is maintained in the locked position by the first stopper 46 that holds the protruding portion 21 (the contact surface 21a of which is pressed against the upper surface 46a of this first stopper), while the body 8 continues to receive the force from the driving spring 12 that continues to press the anti-bounce component 20a against the second stopper 30 (which defines the first position of this anti-bounce component). Further, the flexible blade 48 lightly presses the pin 28. This pressing helps to position the anti-bounce component in the first position. FIG. 4a shows the hammer 7 in a wound-up state. Its body is at the end position P E Therein. Note that, different from the first embodiment, the anti-bounce component 20a is still in its first position and is held in that position by the flexible blade 48 that exerts a slight return force on the pin 28.
[0044] According to the main features of the second embodiment, the bounce prevention device 45 is positioned such that the shift of the bounce prevention component 20a from a first position or first position range to a second position or second position range occurs after the hammer is released and before the body 8 reaches a second intermediate position (Figure 4b), i.e., between Figure 4a and Figure 4b. The shift is driven by a driving force F applied by a spring 12 to a pin 16 fixed to the body 8 of the hammer (to generate a strike to the gong). E This is due to the fact that it receives a strong acceleration generated by the body. This strong acceleration is transmitted to the body axis fixed to the main body and defining the second axis of rotation 22. In other words, the bounce prevention component 20a is rotatably mounted around this body axis, and this body axis, together with the main body 8, receives a strong acceleration as soon as the hammer is released by the actuation mechanism. This acceleration is due to the center of gravity C, which is away from the second axis of rotation. M In this case, an apparent force F is applied to the bounce prevention component 20a. A1 This generates the center of gravity C in the first position or first position range. M However, the bounce prevention component is positioned at a certain distance from a geometric straight line that passes through the second rotation axis and is perpendicular to the straight line connecting the first rotation axis 14 and the second rotation axis 22. The bounce prevention component receives an apparent torque relative to the main body 8, which is caused by the acceleration that the main body, and by extension the bounce prevention component, receives on the second rotation axis.
[0045] The bounce prevention device 45, through the clever design of the elasticity of the flexible blade 48, the bounce prevention component, and the position of the pin 28, generates an apparent torque that rotates the bounce prevention component 20a to a second position, or to a second position range in the illustrated modified example. The bounce prevention component remains in the second position or this second position range until at least the end of the contact surface 21a of the bounce prevention component reaches the terminal position P for the main body 8 to strike. E and contact position P F The apparent force F is the force that moves beyond the contact surface 46a on the first stopper 46 when rotating between them. A1The apparent torque resulting from this acts to counteract the return torque generated by the return force from the flexible blade 48 to the pin 28. This return torque attempts to return the bounce-preventing component 20a toward the stopper 30 that defines the first position of the bounce-preventing component 20a. Thus, the return torque increases as the bounce-preventing component rotates from its first position, gradually counteracting the apparent torque.
[0046] At the latest, when the striking beak portion 9 reaches the gong 10 (Figure 4c), the bounce prevention component returns to the first position range and strongly collides with the second stopper 30 during the strike (Figure 4d). As a result, as already explained, the reaction force F from the gong is applied to the hammer body 8 and, consequently, to the physical axis to which the bounce prevention component 20a is attached. R Apparent force F resulting from this A2 The strong apparent torque generated by this is applied to the bounce-preventing component. Much advantageously, the hammer 7 is neither stopped nor braked between the end position where the hammer is wound up and the contact position where the beak portion 9 reaches the gong 10. This is a remarkable result of the present invention.
[0047] Generally speaking, the first apparent torque acting on the bounce-preventing component counteracts the torque resulting from the restorative force from the flexible element (flexible blade 48). The flexible element is positioned such that the restorative force can return the bounce-preventing component to the first position or position range only after the end of the contact surface 21a of the bounce-preventing component 20a has moved beyond the stopping surface 46a on the first stopper 46 as the body 8 rotates between the terminal position and the contact position, and before the hammer body reaches the maximum position of the restorative movement in the restorative movement.
[0048] In a particular modified example shown, considering that the first position of the bounce-preventing component is not very stable when the first stopper 46 is fixed and no external force is acting on the hammer (because the bounce-preventing component is held against the pin 30 only by the flexible blade 48 which exerts a small force on the bounce-preventing component in the first position), the shift of the bounce-preventing device from the second configuration to the first configuration (which then remains in the first configuration until the protruding portion 21 of the bounce-preventing component 20a abuts against the first stopper 46) occurs only as soon as, or immediately after, the body 8 reaches the first intermediate position (Figure 4f) during the return movement after striking. During the return movement, the protruding portion 21 of the bounce-preventing component may come into contact with the stopper 46 as it passes through it (Figure 4e), and then undergoes rotational motion while being braked by the return force from the flexible blade 48, so as to reach at least the first intermediate position, and may briefly reach the second position range again. The stopper 46 is configured to allow the aforementioned rotational movement of the bounce prevention component without stopping the return movement of the main body 8 (in particular without preventing it from reaching at least the first intermediate position).
[0049] In the second embodiment, the presence of a fixed stopper 46 means that both the first intermediate position and the second intermediate position substantially correspond to the same angular position of the hammer body 8.
[0050] In Figure 5, the same intermediate position P is shown for both the first and second intermediate positions. Int A specific case is considered (for the sake of simplifying the diagram). The sound generation process by the striking device according to the present invention, that is, the process by which the gong is struck by the hammer, from the hammer being locked to the hammer returning to this locked state, is summarized. The hammer is moved from the locked position PR to the end position P of the body by the operating mechanism. E It is wound up to a certain point and thereby rotated in the second direction. The hammer is then released, and its body is subjected to the driving force F exerted by the drive spring. EUnder its action, it is accelerated and rotated in the first rotational direction toward the gong, and finally the striking beak portion reaches the striking / contact position P of the main body. F It then makes contact with the gong. This rotation in the first direction of rotation has a terminal position P E and intermediate position P Int A second phase, P2, exists between these two points.
[0051] According to the present invention, the bounce prevention device shifts from the first configuration to the second configuration in phases P1 and P2. Specifically, the maximum position P of the return operation of the main body 8 after impact. M and terminal position P E The body shifts in the first phase P1 or in the second phase P2. E When rotating from the first direction, the hammer is not stopped. The hammer is also not braked in its rotational motion in the second direction for at least the third phase P3 immediately following the second phase P2. The third phase P3 is when the body is at the striking / contact position P F The process ends when it reaches the end position. Preferably, the hammer is not braked in the rotational motion of its body in the first direction between the end position and the striking / contact position.
[0052] After striking, the hammer body 8 undergoes a return movement (i.e., rotation in the second rotational direction) to reach its maximum position P. M This leads to the fourth phase P4 of the process in which the gong is struck by the hammer. In a preferred main variant, the bounce prevention device shifts from the second configuration to the first configuration in the fourth phase P4. The bounce prevention device then remains in its first configuration during the subsequent fifth phase P5. In this fifth phase P5, the body returns to the maximum position P M From lock position P RThe hammer undergoes terminal rotation in the first direction (towards the gong). At the end of any short terminal stabilization phase (damping of the rotational motion of the bounce prevention component), the hammer is locked again (Figures 2h and 4g). In certain modifications, it may be assumed that the shift of the bounce prevention device from the second configuration to the first configuration occurs in the third phase P3 after one end of the contact surface 21a of the bounce prevention component has moved beyond the stopping surface on the stopper.
Claims
1. A movement (2, 42) incorporating a striking device (4, 44) which includes a gong (10), hammers (6, 6a, 6b, 6c, 7) rotatable around a first axis of rotation (14), and a spring (12) that rotates the hammers, The hammer has a body (8) equipped with a striking beak portion (9) located in a region at a certain distance from the first axis of rotation, The drive spring is positioned to apply a driving force to the body of the hammer so as to rotate the hammer in a first direction that brings the striking beak closer to the gong and allows the striking beak to strike the gong. The striking device (4, 44) includes a hammer operating mechanism that winds up the hammer so that the hammer strikes the gong under the action of the driving force after loading the drive spring by rotating the body of the hammer, from the locked position of the body of the hammer, to the terminal position of the body, in a second direction opposite to the first direction, thereby separating the striking beak from the gong. The features are, The striking device includes bounce prevention devices (5, 5a, 5b, 5c, 45) arranged so as to alternate between a first configuration and a second configuration. In the first configuration, the bounce prevention device stops the movement of the hammer body in the first rotational direction, which begins at at least a first intermediate position between the locked position and the end position of the body, before the striking beak can come into contact with the gong, regardless of whether the gong is vibrating or not. In the second configuration, unlike the first configuration, the bounce prevention device does not stop the rotation of the hammer in the first rotational direction between the end position of the main body and the contact position where the striking beak reaches the gong, provided that the bounce prevention device is in this second configuration when the main body shifts to pass through a second intermediate position between the lock position and the end position, the bounce prevention device does not brake the main body of the hammer at least between the second intermediate position and the contact position, preferably between the end position and the contact position. The striking device is arranged such that, after each strike, the body of the hammer undergoes a return operation in which it rises to at least the first intermediate position without reaching the terminal position. The aforementioned striking device When the hammer is locked and the main body is in the locked position, the bounce prevention device is maintained in the first configuration. Each time the hammer is wound up by the operating mechanism, or after the hammer has been released and before the body (8) of the hammer reaches the second intermediate position, the bounce prevention device is brought to the second configuration. Subsequently, during the return operation of the main body 8, the bounce prevention device is returned to the first configuration. Thereafter, the bounce prevention device is maintained in the first configuration until the hammer is locked again or wound up again by the operating mechanism. Furthermore, the aforementioned body receives a single partial bounce after each impact. A movement located in [location].
2. The bounce prevention device includes bounce prevention parts (20, 20a) that are rotatably attached to the main body (8) of the hammer (6, 6a, 6b, 6c, 7) around a second rotation axis (22), and first stoppers (33, 46) attached to the support part (3) of the hammer. The aforementioned bounce prevention device is When the main body shifts to pass through the second intermediate position, if the bounce prevention component is in the second position or second position range relative to the main body of the hammer, and consequently the bounce prevention device is in the second configuration, the bounce prevention component does not come into contact with the first stopper (33, 46) when the main body (8) rotates between the end position and the contact position. When the bounce prevention component is in a first position or a first position range relative to the body of the hammer, and consequently when the bounce prevention device is in the first configuration, the body of the hammer is stopped by abutting against the first stopper when the bounce prevention component rotates in the first direction, starting at least at the first intermediate position and before the terminal position. The movement according to claim 1, characterized in that when the hammer is locked, the bounce prevention component is positioned to be pressed against the first stopper.
3. The bounce prevention device (5, 5a, 5b) includes flexible elements (24, 24a, 24b) fixed to the main body (8), The flexible elements (24, 24a, 24b) include a portion having a recess (26, 27, 27a) having a non-tangential orientation with respect to the second axis of rotation (22), wherein the non-tangential orientation is preferably angularly closer to a radial line extending through a point at the bottom of the recess than to a tangent line extending through the point, the recess defines a stable position for the bounce-prevention component (20) including a support component (28) that the flexible elements can press against, the support component (28) is at least partially housed in the recess when the bounce-prevention component is in the stable position, and the support component (28) is subjected to the torque that the bounce-prevention component may be subjected to. The movement according to claim 2, characterized in that the portion of the flexible element is arranged to be elastically moved out of the recess, the bounce prevention component is in the first position or the second position when the flexible element is in the stable position defined by the recess, the portion of the flexible element is configured such that when the recess defines the first position, the bounce prevention component (20) is operable in the second position or a second position range by the torque, and when the recess defines the second position, the bounce prevention component is operable in the first position or a first position range by the torque.
4. The movement according to claim 3, characterized in that the recess (27a) has a flank (27b) that forms a stopper for the support component (28) in a rotational direction opposite to the rotational direction that allows the bounce prevention component to be brought to the second position or second position range or the first position or first position range.
5. The portion of the flexible element is the first portion, the recess (26) is the first recess, and the flexible element (24a, 24b) includes a second portion defining a second recess (27, 27a) having a non-tangential orientation with respect to the second axis of rotation, wherein the non-tangential orientation is preferably angularly closer to a radial line extending through a point at the bottom of the second recess than to a tangent line extending through the same point, the second recess defining a second stable position for the bounce-preventing component, and the flexible element is such that the support component can be accommodated at least partially in the second recess with substantially no play when the bounce-preventing component is in the second stable position. The movement according to claim 3 or 4, characterized in that the flexible element is arranged such that the second portion of the flexible element can be elastically moved under the action of a second torque opposite to the torque that the bounce-preventing component may receive in order to exit the second recess, the first recess defines the first portion of the bounce-preventing component, the second recess defines the second portion of the bounce-preventing component when the support component is alternately housed in the first recess and the second recess, and the second portion of the flexible element is configured to bring the bounce-preventing component to the first position under the action of the second torque.
6. The movement according to claim 2, wherein the bounce prevention device includes flexible elements (24, 48) fixed to the main body, the flexible elements (24, 48) having segments (25, 25a), the segments (25, 25a) exert a restoring force generated by the load-applied flexible elements on a support component (28) included in the bounce prevention component (20, 20a) in a tangential direction with respect to the second rotation axis (22), thereby allowing the bounce prevention component to rotate in the tangential direction, and the main body includes second stoppers (30, 31) arranged to stop the tangential rotation of the bounce prevention component at the first or second position of the bounce prevention component.
7. The movement according to claim 6, characterized in that the flexible elements (24, 48) are arranged such that the segments (25, 25a) return the bounce prevention component to the first or second position defined by the second stopper, and that the segments (25, 25a) exert the restoring force on the support component (28) even when the bounce prevention component is in the first or second position.
8. The movement according to claim 6 or 7, wherein the segment (25) is a first segment, the restoring force is a first restoring force, the flexible element (24c) has a second segment (25a) that can exert a second restoring force on the support component (28) in a second tangential direction opposite to the tangential direction, and thereby rotate the bounce prevention component (20) toward the second tangential direction, and the body includes a third stopper (31) positioned to stop the rotation of the bounce prevention component toward the second tangential direction at the second position or the first position of the bounce prevention component.
9. The movement according to claim 8, characterized in that the flexible element (24c) is arranged such that the second segment (25a) returns the bounce prevention component to the second position or the first position defined by the third stopper (31), and that the second segment (25a) exerts the second restoring force on the support component even when the bounce prevention component is in the second position or the first position.
10. The movement according to claim 3 or 4, wherein the flexible element (24) has a segment (25) that can exert a restoring force generated by the load-applied flexible element on the support component (28) in a tangential direction with respect to the second rotation axis (22), and the body includes a second stopper (30) positioned to stop the rotation of the bounce prevention component (20) in the tangential direction at the second position of the bounce prevention component when the recess (26) defines the first position, or at the first position when the recess defines the second position.
11. The movement according to claim 10, characterized in that the flexible element (24) is positioned such that the segment (25) continues to exert the restorative force on the support component (28) when the bounce prevention component (20) is in the second position or the first position.
12. The movement according to claim 10, characterized in that the recess (26) defines the second position and the second stopper (30) defines the first position.
13. The movement according to any one of claims 2 to 4, wherein the bounce prevention device (5) is arranged such that the shift of the bounce prevention component (20) from the first position or position range to the second position or position range occurs while the hammer is being wound up by the operating mechanism and the main body (8) rotates between the maximum position and the end position of the return operation.
14. The bounce prevention components (20, 20a) are located at a certain distance from the second rotation axis (22) to the center of gravity (C Ｍ The movement according to any one of claims 2 to 4, having a contact surface (21a) with the first stopper (33, 46), wherein the contact surface is configured to stop the body (8) of the hammer (6, 6a, 6b, 6c, 7) when the bounce prevention device (20) is in the first configuration, and the body is maintained in the locked position when the hammer is locked by abutting against the first stopper during the rotation in the first direction from at least the first intermediate position.
15. The bounce prevention device (45) is positioned such that the shift of the bounce prevention component (20a) from the first position or first position range to the second position or second position range occurs after the hammer (7) is released and before the body (8) reaches the second intermediate position, and the bounce prevention component is positioned such that, in the first position or first position range, the center of gravity is at a certain distance from a geometric straight line extending through the second rotation axis (22) and a geometric straight line perpendicular to the line connecting the first rotation axis (14) and the second rotation axis, and the bounce prevention component receives a first apparent torque on the body, and the The movement according to claim 14, wherein the first apparent torque is due to the acceleration received by the main body, which is generated by the driving force applied to the main body by the drive spring (12), and consequently to the acceleration received by the bounce prevention component on the second axis of rotation, and the bounce prevention device is arranged such that the first apparent torque rotates the bounce prevention component to the second position or second position range, and in this second position or second position range, the component remains in place until one end of the contact surface (21a) of the bounce prevention component completes the movement of exceeding the stopper surface (46a) of the first stopper (46) during the rotation of the main body between the terminal position and the contact position.
16. The movement according to 15 and 6, characterized in that the second stopper (30) defines the first position of the bounce-preventing component (20a), the first apparent torque acting on the bounce-preventing component is in opposition to the torque resulting from the restoring force, and the flexible element (48) is arranged such that the restoring force can return the bounce-preventing component to the first position or first position range only after one end of the contact surface (21a) of the bounce-preventing component has moved beyond the stopping surface (46a) on the first stopper (46) during the rotation of the body between the terminal position and the contact position, and before the body (8) of the hammer (7) reaches the maximum position of the restoring operation in the restoring operation.
17. The shift of the bounce-preventing component (20) from the second position or second position range, where the bounce-preventing component remains until the end of the single partial bounce, to the first position or first position range is caused by the hammer body (8) striking the gong, and the bounce-preventing component is positioned such that, in the second position or second position range, the center of gravity is at a certain distance from a geometric straight line extending through the second axis of rotation (22) and a geometric straight line perpendicular to the line connecting the first axis of rotation (14) and the second axis of rotation. The movement according to claim 14, wherein the bounce prevention component receives a second apparent torque relative to the main body, the second apparent torque is due to the reaction force from the gong that the main body receives when the striking beak portion (9) strikes the gong (10) and stops, and consequently due to the reaction force from the gong that the bounce prevention component receives on the second rotation axis, and the bounce prevention device is arranged such that the second apparent torque rotates the bounce prevention component to the first position or position range that the main body remains in during the return operation.
18. The movement according to claim 17, characterized in that the first stopper (33) is supported by a flexible blade (32) and is configured to retract instantaneously under the action of the bounce prevention component (20) which instantaneously presses the first stopper during the return movement of the main body (8) in the second rotational direction.
19. The movement according to any one of claims 2 to 4, characterized in that the first stopper (46) is fixed, and the shift of the bounce-preventing component (20a) from the second position or second position range to the first position or first position range, where the bounce-preventing component remains until the end of the single partial bounce, occurs during the return operation as soon as the body (8) reaches or exceeds the first intermediate position.