Timepiece movement comprising a timepiece device

Abstract

The invention relates to a timepiece movement comprising a time striking device provided with an anti-rebound device configured to generate only one partial rebound of the hammers after each strike of the hammers on the gongs, and such that the hammers do not touch the gongs in vibration as a result of this rebound, so as not to affect the sound quality produced by the strike. The anti-rebound device is configured to be alternately in two configurations: - a first configuration in which the anti-rebound device prevents the rotation of the hammer body of the hammers in a first direction of rotation towards the gongs starting from at least a first intermediate position between the rest position and the limit position of the hammers in which they are energized; - a second configuration in which the anti-rebound device neither prevents nor slows down the rotation of the hammers in the first direction of rotation between the limit position of the hammer body and the contact position with the gongs, as long as the anti-rebound device is in the second configuration when the hammer body moves past a second intermediate position between the rest position and the limit position.

Description

Technical Field

[0001] The present invention relates to a watch movement including a striking device, which typically consists of a hammer, a reed, a drive spring for driving the hammer to complete each strike, and a hammer actuation mechanism for winding the hammer before each strike. Background Technology

[0002] The inclusion of a striking mechanism in a watch movement is well-known. This is a horological complication requiring extremely high watchmaking skills. One known technical problem is the damping and cushioning of the hammers after striking, in order to reduce the number of bounces and their amplitude. However, regardless of the solution employed in current technology, even a single bounce with a relatively small amplitude can cause problems because such a bounce can quickly interfere with the resonance / vibration of the gong. In particular, a complete bounce can lead to a suppression of the striking sound, especially when the striking beak contacts the gong again due to a phase difference relative to the lateral movement of the vibrating gong. This phenomenon is clearly perceptible to the user and therefore affects the tone quality and intensity of the sound.

[0003] To cushion the impact of the hammer strike and limit rebound, traditional striking mechanisms include a counter-spring / braking spring. As the name suggests, this counter-spring acts on the hammer during the final stage of its stroke toward the gong, generating a sufficiently large braking force by resisting the hammer's movement toward the gong generated by the drive spring. This counter-spring has high stiffness and is arranged to minimize this final stroke stage to avoid excessively reducing the hammer's kinetic energy before striking the gong. However, the counter-spring must also act on the hammer early enough to avoid multiple rebounds and ideally allow only one partial rebound. It is important to note that the counter-spring defines the hammer's resting position, in which the striking beak of the hammer remains relatively close to but not in contact with the gong, regardless of whether the gong is vibrating. Therefore, installing and adjusting the configuration of the counter-spring in a striking mechanism is a complex operation that can be time-consuming even for experienced watchmakers.

[0004] Another major drawback of the counter-spring is that, because it exerts a large reaction force on the hammer's movement during its final stroke toward the reed, it reduces the energy that the hammer can transfer to the reed. This loss of mechanical energy reduces the efficiency of the striking device, causing it to lose some mechanical energy before each strike.

[0005] In this text, the term "strike" refers to the moment when the hammer, after being pre-winded, briefly contacts the reed at its striking beak, typically near the reed's fixed point. At this instant, the hammer transfers mechanical energy to the reed, exciting it. The term "rebound" refers to the process after a strike, where the hammer moves in the opposite direction and towards the reed again until it touches it once more. Therefore, "partial rebound" means that although the hammer moves in the opposite direction after striking, it is prevented from contacting the reed again; the reverse movement is insufficient for it to touch the reed again. Summary of the Invention

[0006] The purpose of this invention is to provide a solution to the aforementioned problems of the prior art. Specifically, this invention aims to provide a watch movement equipped with a striking device, such that the hammer only experiences a partial rebound after each strike, i.e., no complete rebound occurs. Simultaneously, during the movement of the hammer from its extreme position (when the hammer is wound / stored energy) to the contact position with the reed (i.e., the position where the striking beak contacts the reed during strike), no obstruction is applied to the hammer body, and only extremely low mechanical energy is consumed, preferably almost none, from the energy source associated with the striking device. Therefore, this invention provides a striking device that achieves maximum efficiency between the mechanical energy supplied to the hammer by the hammer actuation mechanism and the mechanical energy transferred from the hammer to the reed, while simultaneously obtaining excellent sound quality from the reed, especially ensuring that the vibration of the reed does not attenuate due to rebound.

[0007] Therefore, the present invention relates to a movement including a striking device, the striking device comprising a reed, a hammer rotatable about a first rotation axis, and a drive spring for driving the hammer to rotate. The hammer has a hammer body with a striking beak-like portion disposed in a region remote from the first rotation axis. The drive spring is arranged to apply a driving force to the hammer body, causing the hammer body to rotate in a first rotation direction, bringing the striking beak-like portion closer to the reed to allow it to strike the reed. The striking device includes a hammer actuation mechanism for winding the hammer from a resting position where the striking beak-like portion is separated from the reed, rotating the hammer body in a second rotation direction opposite to the first rotation direction to its limit position, thereby storing energy in the drive spring, and then releasing the hammer so that it strikes the reed under the driving force. The striking device also includes an anti-rebound device arranged to alternately be in the following positions:

[0008] - A first configuration in which the anti-rebound device prevents the hammer body from moving in a first rotational direction before the striking beak can contact the reed, the movement initiating at least a first intermediate position between the hammer body's rest position and its limit position, regardless of whether the reed is vibrating; and

[0009] - In the second configuration, which differs from the first configuration, the anti-rebound device does not prevent the hammer from rotating along the first rotation direction from the extreme position of the hammer body to the contact position, which is the position where the beak-shaped part contacts the sound spring, provided that the anti-rebound device is in the second configuration when the hammer body passes through the second intermediate position between the rest position and the extreme position; the anti-rebound device does not impede the hammer body of the hammer body at least between the second intermediate position and the contact position, preferably between the extreme position and the contact position.

[0010] The striking device is arranged such that the hammer body undergoes a return motion after each strike, the return motion rising at least to a first intermediate position without reaching a limit position; and the striking device is arranged such that:

[0011] - When the hammer is at rest and the hammer body is therefore at rest, the anti-rebound device remains in the first configuration;

[0012] - Whenever the hammer is wound by the hammer actuation mechanism or after the hammer is released and before the hammer body reaches the second intermediate position, the anti-rebound device switches to the second configuration.

[0013] - Subsequently, during the return motion of the hammer, the anti-rebound device returns to the first configuration;

[0014] - Thereafter, the anti-rebound device remains in the first configuration until the hammer stops again or is wound again by the hammer actuation mechanism;

[0015] Therefore, the hammer bounces only once after each strike.

[0016] In one main embodiment, the anti-rebound device includes an anti-rebound component and a first limiting member. The anti-rebound component is rotatably mounted on the hammer body of the hammer about a second rotation axis. The first limiting member is mounted on the support of the hammer and is arranged such that:

[0017] -When the anti-rebound component is in the second position or the second position range relative to the hammer body when the hammer body passes through the second intermediate position, and the anti-rebound device is therefore in the second configuration, the anti-rebound component does not contact the first limiting member during the process of the hammer body rotating from the limit position to the contact position.

[0018] - When the anti-rebound component is in a first position or a range of a first position relative to the hammer body of the tuning hammer, and the anti-rebound device is therefore in a first configuration, the rotational movement of the hammer body along a first rotational direction from at least a first intermediate position below the said limit position is prevented by the anti-rebound component abutting against the first limiting member; and

[0019] - When the hammer is at rest, the anti-rebound component presses against the first limit component.

[0020] In a general embodiment, the anti-rebound component has a center of mass that is a certain distance from the second rotation axis. The anti-rebound component has a contact surface that cooperates with the first limiting member. The contact surface is arranged such that when the anti-rebound device is in the first configuration, during the rotation of the hammer body of the sound hammer in the first rotation direction, the hammer body is prevented from rotating from at least a first intermediate position by abutting against the first limiting member, and the hammer body is kept in the rest position when the sound hammer is in the rest state.

[0021] In the first embodiment, the anti-rebound device is arranged to switch the anti-rebound component from a first position or a first position range to a second position or a second position range. This switching occurs when the hammer is wound by the hammer actuation mechanism and during the process of the hammer rotating from the maximum position of the return movement to the limit position.

[0022] In the second embodiment, the anti-rebound device is arranged such that the anti-rebound component switches from a first position or a first position interval to a second position or a second position interval after the hammer is released and before the hammer body reaches a second intermediate position. The anti-rebound component is arranged such that: in the first position or the first position interval, the center of mass is a distance away from a geometric line passing through the second rotation axis and perpendicular to the line connecting the first and second rotation axes; the anti-rebound component is subjected to a first apparent torque relative to the hammer body, which is caused by the acceleration generated by the driving force applied to the hammer body by the drive spring, thereby causing the anti-rebound component to rotate about the second rotation axis; the anti-rebound device is arranged such that the first apparent torque causes the anti-rebound component to rotate to the second position or the second position interval and remain in the second position or the second position interval until the contact surface of the anti-rebound component moves past the first limiter during the rotation of the hammer body from the limit position to the contact position.

[0023] In an advantageous embodiment, the anti-rebound component switches from a second position or a second position interval to a first position or a first position interval triggered by the hammer body striking a reed. The anti-rebound component is arranged such that in the second position or second position interval, its center of mass is a certain distance away from a geometric line passing through a second rotation axis and perpendicular to the line connecting the first and second rotation axes; when the striking beak stops against the reed, due to the reaction force of the reed on the hammer body, the anti-rebound component experiences a second apparent torque relative to the hammer body, and the anti-rebound component thus rotates about the second rotation axis. The anti-rebound device is arranged such that the second apparent torque rotates the anti-rebound component to the first position or first position interval, and it remains in the first position or first position interval during the return movement of the hammer body. Attached Figure Description

[0024] The present invention will be described in more detail with reference to the accompanying drawings, which are given by way of non-limiting example, wherein:

[0025] Figure 1 A partial plan view of a watch movement equipped with a striking device according to a first embodiment of the present invention is shown;

[0026] Figures 2a to 2h It shows Figure 1 The timekeeping device shown has multiple consecutive states during the process of the hammer being cocked, then striking the reed, until the hammer returns to its resting position;

[0027] Figure 3 A partial plan view of a watch movement equipped with a striking device according to a second embodiment of the present invention is shown;

[0028] Figures 4a to 4g It shows Figure 3 The chiming device shown winds the hammer, then strikes the reed until the hammer returns to its resting position (corresponding to...). Figure 3 Multiple consecutive states in the process (as shown in the figure);

[0029] Figure 5 A schematic diagram illustrating the various stages experienced during the striking of the reed and the subsequent single partial rebound.

[0030] Figure 6 , Figure 7 and Figure 8 Three variations of the first embodiment are shown. Detailed Implementation

[0031] Combination Figure 1 and Figures 2a to 2h The following describes a first embodiment of a watch movement according to the present invention. First, a main embodiment of the present invention is described, which encompasses the first and second embodiments; the second embodiment will be discussed subsequently. Figures 1 to 2h A detailed description is provided (for clarity, the second embodiment is described only after the first embodiment). This main embodiment is a preferred embodiment within the overall scope of the invention, defined by the general features as defined in claim 1, and is also described below in conjunction with relevant illustrations of the first embodiment (for clarity).

[0032] Typically, the movement 2 includes a striking device 4, which comprises a reed 10, a hammer 6 rotatably mounted about a first rotation axis 14, and a drive spring 12 for driving the hammer's rotation. The hammer 6 has a hammer body 8, which has a striking beak-like portion 9 disposed in a region away from the first rotation axis 14. The striking device 4 typically also includes a hammer actuation mechanism capable of moving the hammer from its resting position (where the hammer body is at rest). Figure 1At this resting position, the beak-shaped part 9 is struck (while the reed 10 is separated), causing the hammer to rotate in a second direction opposite to the first rotation direction to its limit position. Figure 2a This allows the drive spring 12 to store energy, which is then released to allow the hammer to strike the reed under the action of the driving force. Note that the drive mechanism is not shown in the figure. The drive spring 12 is arranged to apply a driving force F to the hammer body 8 of the hammer 6. E For example, by pressing against the pin 16 fixed to the hammer body, the hammer body 8 is rotated in the first rotation direction, causing the striking beak 9 to approach the reed 10. Figure 2b ), and allows the beak-shaped part to strike the reed ( Figure 2c ).

[0033] According to the present invention, the timekeeping device 4 typically includes an anti-rebound device 5, which will be described in detail below. The anti-rebound device is arranged to alternately be in the following states:

[0034] - First configuration (especially shown in) Figure 2f In this first configuration, the anti-rebound device 5 prevents the hammer body 8 of the sound hammer 6 from moving along the first rotational direction, which is from the rest position (2g, 2h). Figure 1 ) and extreme positions ( Figure 2a At least the first intermediate position between (roughly see) Figure 2g ) begins, and before the striking beak 9 contacts the reed 10, regardless of whether the reed is vibrating; and

[0035] - Second configuration (especially shown in) Figure 2a and Figure 2b This second configuration differs from the first configuration in that, in this second configuration, the anti-rebound device 5 does not prevent the hammer 6 from moving along the first rotational direction from its extreme position to the contact position of the hammer body 8 (at which point the striking beak 9 reaches the reed 10). Figure 2c The rotational motion of the hammer is conditional upon the hammer body 8 passing through the second intermediate position (approximately see...). Figure 2b When the anti-rebound device is in the second configuration, the anti-rebound device 5 does not impede the hammer body 8 of the sound hammer 6 at least between the second intermediate position and the contact position, and preferably impedes the hammer body 8 between the extreme position and the contact position.

[0036] The timekeeping device 4 is arranged such that the hammer body 8 of the striking hammer 6 undergoes a return motion after each strike (Fig. 2d). Figure 2e The return motion rises at least to the first intermediate position without reaching the limit position. It should be noted that the hammer never reaches the limit position during the return motion because, during the striking process, the hammer has transferred most of its mechanical energy to the reed. Furthermore, the timekeeping device is arranged such that:

[0037] - When the hammer 6 is at rest and the hammer body 8 is at rest position, the anti-rebound device 5 remains in the first configuration.

[0038] - Whenever the hammer is wound up by the actuation mechanism (first embodiment) or released, and before the hammer body 8 reaches the second intermediate position (second embodiment, which will be described in detail below), the anti-rebound device 5 switches to the second configuration;

[0039] - Subsequently, during the return motion of the hammer 8, the anti-rebound device 5 returns to the first configuration;

[0040] - Then, the anti-rebound device 5 remains in the first configuration until the hammer stops again or is wound / stored again by the actuation mechanism.

[0041] Thanks to the general features of this invention, the hammer body 8 of the sound hammer rebounds only once after each strike, and it is a partial rebound. This is a very significant effect, and the main features that achieve this effect will be described below.

[0042] In the main embodiment, encompassing both the first and second embodiments (the second embodiment will be described in detail below; for clarity, no illustrative references to the second embodiment are given here), the anti-rebound device 5 includes an anti-rebound component 20 and a first limiting member 33. The anti-rebound component is rotatably mounted on the hammer body 8 of the hammer 6 about a second rotation axis 22. The first limiting member 33 is mounted on the support member of the hammer (the machine plate 3 in the figure) and arranged as follows:

[0043] - When the anti-rebound component 20 passes the second intermediate position of the hammer body 8 of the hammer 6 ( Figure 2b When it is in the second position relative to hammer body 8 () Figures 2a to 2c ) or the second position interval, and the anti-rebound device 5 is therefore in the second configuration, when the hammer 8 is in the extreme position ( Figure 2a Rotate to the contact position ( Figure 2c During the process, the anti-rebound component 20 does not contact the first limiting component 33;

[0044] - When the anti-rebound component 20 is in the first position relative to the hammer body 8 of the hammer ( Figures 2f to 2h When the anti-rebound device 5 is in the first configuration, or in the first position range, the rotational movement of the hammer 8 about the first rotation direction is stopped by the anti-rebound component 20 against the first limiting member 33, and the rotational movement is at least from the first intermediate position ( Figure 2g (Beginning, and before the extreme position; and)

[0045] - When the hammer 6 is at rest, the anti-rebound component 20 presses against the first limit component 33.

[0046] The main embodiment is further characterized in that the anti-rebound device 5 includes a flexible member 24, which is fixed to the hammer body 8 of the hammer 6 and arranged to interact with the anti-rebound component 20.

[0047] In a major variation of a first embodiment of the watch movement according to the invention, the flexible member 24 of the anti-rebound device 5 is fixed to the hammer body 8 and has a portion forming a recess 26, which has a non-tangential orientation relative to the second rotation axis 22 and is preferably closer in the angular direction to a radial line passing through a point at the bottom of the recess than to a tangential line passing through the bottom of the recess. The recess 26 defines a stable position for the anti-rebound member 20, which includes a pin 28 forming a support for the flexible member, the pin having an axial surface against which the flexible member 24 can be pressed. In one variation, the support may be a protrusion integral with the base plate of the anti-rebound member; in another variation, the support may be part of the base plate, the side of which forms an axial support surface for the flexible member, such that the flexible member lies in the same overall plane as the base plate.

[0048] The pin 28 is arranged such that when the anti-rebound member 20 is in the stable position defined by the recess 26, the pin 28 can be at least partially accommodated within the recess 26 with substantially no clearance; the pin 28 can also elastically displace the portion of the flexible member under the action of a torque on the anti-rebound member to disengage from the recess. In fact, during the sound generation process of the timekeeping device 4, there are two specific stages in which a torque sufficient to switch the anti-rebound member from the first position or first position range to the second position or second position range, and to perform the reverse switching, are respectively applied to the anti-rebound member. It should be noted that the direction of the torque used for the reverse switching is opposite to the direction of the torque during the switching process described above. It should also be noted that the intensity of the torque usually varies depending on the direction of the sound generation process. The orientation of the recess 26 is generally determined by the centerline of the two side walls extending upward from the bottom of the recess.

[0049] In the illustrated variant, the flexible member 24 is formed of a spring wire extending along a geometric plane, the spring wire including a first elastic portion that is generally straight and a second portion located at its free end side, the second portion including a bent section and a plurality of inclined sections immediately following it, the elasticity of the second portion being less than that of the first portion. Specifically, the recess 26 is V-shaped, defined by two inclined sections of the spring wire. In the first main variant, when the anti-rebound member is in a stable position defined by the recess of the flexible member, the anti-rebound member is in either a first position or a second position. Subsequently, the portion of the flexible member is configured such that: when the recess defines the first position, the anti-rebound member 20 can be moved under torque to a second position or a range of a second position; when the recess defines the second position, the anti-rebound member can be moved under torque to a first position or a range of a first position. In the illustrated variant, the recess 26 defines the second position.

[0050] Two variations will be described below. In the first specific variation shown in Figure 6, the portion of the flexible member is the first portion, and the recess 26 is the first recess. In the anti-rebound device 5a, the flexible member 24a of the hammer body 8 fixed to the hammer 7 has a second portion defining a second recess 27, which has a non-tangential orientation relative to the second axis of rotation 22, and preferably is closer in the angular direction to a radial line passing through a point at the bottom of the second recess than to a tangential line passing through the bottom of the second recess. The second recess 27 defines a second stable position for the anti-rebound member, and the flexible member 24a is arranged such that when the anti-rebound member 20 is in the second stable position, the pin 28 can be at least partially received in the second recess with substantially no clearance; when the anti-rebound member 20 is subjected to a second torque opposite to the first torque, the pin 28 can cause the second portion of the flexible member 24a to elastically displace, thereby disengaging from the second recess 27. When the pin 28 is alternately accommodated in the first recess 26 and the second recess 27, the first recess 26 defines a first position for the anti-rebound member, and the second recess 27 defines a second position for the anti-rebound member. The second portion of the flexible member is configured such that the anti-rebound member 20 can be brought to the first position under the action of a second torque. As previously described, both the first and second torques are generated during the sounding of the timekeeping device.

[0051] In the second specific variant of the anti-rebound device 5b ( Figure 7As shown), the flexible member 24b includes a recess 27a configured with a sidewall 27b forming a limiting surface for the pin 28. The limiting surface acts along a rotational direction of the anti-rebound member 20, which is opposite to the rotational direction that moves the anti-rebound member 20 to a second position or second position range (generally) when the recess 27a defines a first position or a first position range, or opposite to the rotational direction that moves the anti-rebound member 20 to the first position or first position range when the recess defines a second position or a second position range. The sidewall 27b limits the angular travel of the anti-rebound member 20 by counteracting the torque that causes the pin 28 to enter the recess during the switching of the anti-rebound member from one position to another. This variation ensures that the rotation of the anti-rebound member stops under torque, which can be very large, without adding an additional pin or protruding component to the hammer body 8 of the hammer 6b. Therefore, when the recess defines the first position of the anti-rebound member, as... Figure 7 As shown, this first variant is particularly advantageous.

[0052] In the second main variant, the anti-rebound device includes a flexible member 24 fastened to the hammer body 8, and the flexible member having a section 25 that can apply a restoring force generated by the constrained flexible member to the pin 28 of the anti-rebound component 20 in a tangential direction relative to the second rotation axis 22, thereby causing the anti-rebound component to rotate in the tangential direction. The hammer body 8 is provided with a second limiting member 30, which is arranged to allow the anti-rebound component to rotate tangentially to the first position (…). Figure 1 The rotation of the anti-rebound member is stopped when it is rotated to the second position of the anti-rebound member 20. Preferably, the flexible member 24 is configured to apply a restoring force to the pin 28 to return the anti-rebound member to the first position or, alternatively, to the second position defined by the second limiting member; and when the anti-rebound member is already in the first position ( Figure 1 When in the first or second position, the reset force still works, thus making the first or second position relatively stable.

[0053] In the third specific variant included in the second main variant ( Figure 8 As shown), section 25 is the first section, and the reset force is the first reset force. The anti-rebound device 5c includes a flexible member 24c having a second section 25a, which can apply a second reset force to the pin 28 of the anti-rebound component 20 in a second tangential direction opposite to the stated tangential direction, thereby causing the anti-rebound component to rotate in the second tangential direction. The hammer body 8 of the hammer 6c is provided with a third limiting member 31, which is arranged to allow the anti-rebound component to rotate in the second tangential direction to a second position (…). Figure 8The rotation of the anti-rebound member is stopped when it reaches the second position or the first position. Preferably, the flexible member 24c is arranged such that the second section 25a applies a second restoring force to the pin 28, moving the anti-rebound member to the second position or the first position defined by the third limiting member; and when the anti-rebound member is in the second position or the first position, the second restoring force holds it in the second position or the first position.

[0054] An advantageous variation of the first embodiment combines the first and second main variations described above and encompasses the variation shown in FIG1. ​​The flexible member 24 has a section 25 that can apply a restoring force generated by the constrained flexible member to the pin 28 in a tangential direction relative to the second rotation axis 22. The hammer body 8 is provided with a second limiting member 30, which is arranged to stop the rotation of the anti-rebound member 20 in the tangential direction, i.e., when the recess 26 defines a second position of the anti-rebound member (…). Figure 1 The second limiting member 30 prevents the anti-rebound member from rotating tangentially to the first position, or alternatively, when the recess 26 defines the first position of the anti-rebound member 20, the second limiting member 30 prevents the anti-rebound member from rotating tangentially to the second position. Preferably, the flexible member 24 is arranged such that the section 25 continues to apply a restoring force to the pin 28 even when the anti-rebound member 20 is in the first or second position. In this case, the first or second position is a stable position of the anti-rebound member. In another case, the section 25 and the second limiting member 30 define a first position interval or a second position interval of the anti-rebound member. In the illustrated variant, when the recess 26 defines the anti-rebound member in the second position, the second limiting member 30 defines the first position of the anti-rebound member, both of which are stable positions.

[0055] In a preferred variation of the first embodiment, which is also applicable to the second embodiment described below, the anti-rebound component 20 has a center of mass CM, which is a certain distance from the second rotation axis 22. The anti-rebound component has a protrusion 21 that defines a contact surface 21a that engages with the first limiting member 33. This contact surface is configured such that, when the hammer 6 is in the first configuration and begins to rotate in the first rotation direction from at least a first intermediate position, the hammer body 8 is stopped rotating by abutting against the first limiting member 33 before the striking beak of the hammer touches the reed 10; and the hammer body is held in the resting position when the hammer is in the resting state.

[0056] Back Figure 1 The advantageous variant shown will further describe some specific features of this variant, see reference. Figure 1 and Figures 2a to 2hThe first limiting member 33 is movable because it is supported by the flexible strip 32 and configured to temporarily retract / yield under the action of the anti-rebound member 20 that temporarily presses against the first limiting member 33 during the return movement of the hammer body 8, that is, during the single / partial rebound process after the impact. Figure 2e The pin 34, fixed to the plate 3, is used to hold the flexible strip in a predetermined position when no force is applied. Preferably, the flexible strip is under slight pressure / force when pressed against the pin 34. The first limiting member 33 is formed by the end section of the flexible strip, which is located after the bend at the free end of the flexible strip and preferably forms an angle of less than 90° with the substantially straight portion of the flexible strip. When the hammer 6 is in the resting state, as Figure 1 As shown, the hammer body 8 of the sound hammer is in the rest position, the anti-rebound component 20 is in the first position, and presses against the second limiting component 30 that limits the first position.

[0057] According to a first key feature of the first embodiment, the anti-rebound device 5 is configured such that the anti-rebound component 20 switches from the first position or a first position range (the anti-rebound device is in its first configuration, corresponding to the first configuration of the hammer 6 in the illustrated variant) to the second position or a second position range (the anti-rebound device is in its second configuration, corresponding to the second configuration of the hammer 6 in the illustrated variant) during the winding of the hammer by the hammer actuation mechanism, that is, during the process of the hammer body rotating from its maximum position in the return motion to its limit position. In the illustrated variant, the anti-rebound component 20 switches from a first position (a stable position defined by the segment 25 of the spring wire 24 and the pin 30 defining the second limiting member) to a second position (a stable position defined by the V-shaped recess 26 formed by the end portion of the spring wire 24) at the end stage of hammer winding. The protrusion 21 of the anti-rebound component 20 abuts against the pin 38 fixed to the action plate 3 and is subjected to a torque. The direction of this torque is opposite to the direction of the torque on the hammer body 8 during hammer winding. This torque enables the anti-rebound component to overcome the torque generated by the restoring force exerted on the anti-rebound component by the segment 25 of the flexible member 24, thereby moving the anti-rebound component from the first position to the second position. Figure 2a As shown.

[0058] When hammer 6 is fully wound and the anti-rebound component is approximately in the second stable position, the hammer is released. The hammer is then subjected to a driving force FE exerted by the drive spring 12, which presses against the pin 16 of the hammer body 8. Hammer 6 accelerates until it reaches the reed 10, at which point it possesses relatively large kinetic energy and transfers a portion (preferably most) of this energy to the reed to excite it to vibrate and produce the desired sound. In the second position, hammer 6 is in its extreme position (i.e., fully wound position) and contact position (the position where the beak 9 contacts the hammer, such as...). Figure 2c Between (as shown), it will not be stopped or slowed down. This characteristic is significant and very advantageous. For example... Figure 2b As shown, the hammer 6, especially the hammer body 8, is not disturbed or slowed down when the protrusion 21 of the anti-rebound component 20 passes the first limiting member 33. At this time, the hammer body rotates in the direction toward the reed (defined as the first rotation direction), the anti-rebound component is in its second position, and the anti-rebound device is in its second configuration. During the process of the hammer body rotating from the extreme position to the contact position with the reed, the anti-rebound component does not contact the first limiting member 33. Figure 2b The hammer body 6 of the display hammer is approximately in the intermediate position previously referred to as the "second intermediate position". In the main embodiment, it is generally stipulated that the anti-rebound component must reach its second position before this stage, thereby placing the anti-rebound device in its second configuration to avoid contact with the first limiting member.

[0059] According to the second key feature of the first embodiment, the anti-rebound component switches from the second position or the second position range to the first position or the first position range by the hammer body of the hammer (specifically, the striking beak-shaped part 9) striking the reed (see...). Figure 2c (At the time shown). The anti-rebound component is arranged such that in the second position or between the second position intervals, its center of mass CM is a certain distance away from a geometric line passing through the second rotation axis 22 and perpendicular to the line connecting the first rotation axis 14 and the second rotation axis. When the beak-shaped portion 9 is struck against the reed, the anti-rebound component 20 is subjected to an apparent torque, previously referred to as the "second apparent torque," relative to the hammer body 8 of the hammer. This apparent torque is generated by the apparent force FA acting at the center of mass CM, which originates from the reaction force FR generated by the reed 10 on the hammer body 8 and acts on the anti-rebound component 20 through the second rotation axis 22. The anti-rebound device is configured such that the second apparent torque causes the anti-rebound component to rotate ( Figure 2c ) to the first position ( Figure 2d In another variation, during the return motion following the hammer's impact, the anti-rebound component remains in the first position or the first position range (or the first position interval). Figures 2d to 2fA corollary to this second key feature is as follows: during the single partial rebound after impact, the anti-rebound component 20 remains in the first position during this return movement. It should be noted that the apparent torque experienced by the anti-rebound component is relatively large. Therefore, the process of the anti-rebound component 20 switching from the second position to the first position occurs almost synchronously with the impact. Figure 2d The anti-rebound component can abut against the limiting member 30 at a high angular velocity, which fully dissipates the energy of the anti-rebound component 20 and prevents it from returning to the second position.

[0060] As mentioned above, during the single partial rebound process after impact, when the hammer 8 returns to its original position, the limiting member 33, supported by the flexible strip 32, instantly retracts under the action of the anti-rebound component 20 that presses against the limiting member laterally. Figure 2e The return motion continues until the protrusion 21 of the anti-rebound component 20 passes the limit member 33 and reaches its maximum position in a second rotational direction opposite to the first rotational direction. Figure 2f The maximum position is at least located at the first intermediate position of the hammer body 8 (Fig. 2g). From this maximum position, if the hammer body 8 rotates back towards the reed 10 in the first rotation direction, while the anti-rebound component remains in its first position and the anti-rebound device is thus in the first configuration, the limiting member 33 will stop the rotation before the striking beak 9 contacts the reed, regardless of whether the reed vibrates. The timing device, especially the anti-rebound device 5, is arranged so that during the aforementioned return movement, the hammer body 8 reaches at least the first intermediate position, but not the extreme position. From this first intermediate position, when the anti-rebound component 20 is in the first position, the rotation of the hammer in the first rotation direction is prevented by the limiting member 33. This is achieved, in particular, by adjusting the remaining energy retained by the hammer body after one strike. Preferably, to obtain a certain level of operational safety, the anti-rebound device is arranged such that the return movement reaches the maximum position ( Figure 2f The maximum position is higher than the first intermediate position. It should be noted that in the first main embodiment, the second intermediate position of the hammer 8 is different from the first intermediate position of the hammer. Figure 2g Roughly speaking, the second intermediate position corresponds to the second corner position of the hammer body, which is further away from the contact position with the reed than the first intermediate position (which corresponds to the first corner position of the hammer body). Figure 2c ).

[0061] After a brief period of stability, the hammer fell silent again. Figure 2hUnless the hammer actuation mechanism has restarted winding in preparation for the next strike before the hammer has completely stopped, it is important to note that the first stop is supported by a flexible member, and in the variant shown, the stop itself has a certain degree of flexibility, especially in the angular direction relative to the first axis of rotation 14. Therefore, the anti-rebound device 5 is arranged such that, especially for the predetermined resting position of the hammer body 8, the striking beak 9 cannot contact the reed 10 even if the stop 33 and its support 32 are elastic, and therefore contact is even less likely in the unexcited / non-vibrating state.

[0062] It should be noted that in other embodiments, only the aforementioned first main feature or only the second main feature may be present.

[0063] The following will refer to Figures 3 to 5 This section describes a second embodiment of the watch movement of the present invention. It primarily focuses on the differences between this embodiment and the first embodiment, without repeating descriptions of components common to both embodiments, which are all included in the aforementioned main embodiment.

[0064] The movement 42 includes a striking device 44, which differs from the aforementioned striking device 4 in the arrangement and working principle of the anti-rebound device 45. The overall working principle remains unchanged, especially since the anti-rebound device still prevents the hammer from fully rebounding after being struck and prevents it from contacting the reed again before a new strike is performed under the control of the striking device.

[0065] The anti-rebound device 45 (which constitutes the timekeeping device 44) includes an anti-rebound component 20a mounted on the hammer body 8 of the hammer 7. This anti-rebound component 20a is similar to the anti-rebound component 20 in the first embodiment, except for the positioning of the pin 28, which forms a support for the flexible strip 48, which is fastened to the hammer body 8 and constitutes the flexible element in the main embodiment. Therefore, the anti-rebound component 20a has a center of mass CM, which is a certain distance from the second rotation axis 22, and a protrusion 21 that defines a contact surface 21a that mates with the first limiting member 46. The first limiting member 46 is rigidly mounted on the plate 3. The limiting member 46 is attached to the plate, which forms a support for the timekeeping device, particularly the hammer. Therefore, in the second embodiment, the switching of the anti-rebound component 20a from the second position to the first position (as defined above) cannot be triggered by impact, nor will it occur during or immediately after impact. It should be noted that, as previously stated, the switching involves the transition of the anti-rebound device 45 from the second configuration to the first configuration, thereafter which the anti-rebound device 45 remains in the first configuration until, during the partial rebound after each strike, i.e., during the movement of the hammer body in the direction toward the reed (which defines the first rotational direction of the hammer body), the hammer is stopped by the first stopper 46. Therefore, during this switching process, the anti-rebound device returns to the first configuration and remains in it until the hammer stops again or is re-winded by the hammer actuation mechanism.

[0066] According to a first specific feature of the second embodiment, the anti-rebound device 45 does not define a stable position for the second position of the anti-rebound component. In fact, as described below... Figures 4a to 4g As shown, the anti-rebound component dynamically switches from a first position to a second position interval, which has a generally extreme position defined by the stiffness of the flexible strip or optionally by a limiting member (e.g., a component that fixes the flexible strip 48 to the machine plate 3), and then returns to the first position interval at the latest upon impact. According to a second specific feature of the second embodiment, since the first limiting member 46 is fixedly disposed on the machine plate 3, the aforementioned switching of the anti-rebound component 20a from the second position or the second position interval to the first position or the first position interval occurs during the return movement after the hammer 8 has passed the first intermediate position. Figure 4f ).

[0067] Figure 3The timekeeping device 44 is shown in a non-operating (silent) state, with the hammer 7 in a resting position and its body 8 also in a resting position corresponding to the first position. The hammer body 8 is held in the resting position by a first limiting member 46, which holds the protrusion 21 of the anti-rebound member 20a, the contact surface 21a of which presses against the upper surface 46a of the first limiting member 46; simultaneously, the hammer body 8 is still subjected to the force of the drive spring 12, keeping the anti-rebound member 20a pressed against the second limiting member 30, which defines the first position of the anti-rebound member. In addition, the flexible strip 48 slightly presses against the pin 28, which helps to position the anti-rebound member in this first position. Figure 4a The display shows that hammer 7 is in the cocked position, and its hammer body is at its extreme position P. E It should be noted that, unlike the first embodiment, the anti-rebound component 20a is still in its first position at this time, and is held in this first position by the small rebound force applied to the pin 28 by the flexible strip 48.

[0068] According to a key feature of the second embodiment, the anti-rebound device 45 is arranged such that the switching of the anti-rebound component 20a from a first position or a first position interval to a second position or a second position interval occurs after the hammer is released, and after the hammer body 8 reaches the second intermediate position ( Figure 4b Before, that is, before Figure 4a and Figure 4b The switching occurs between these two points. This switching is based on the fact that the hammer body 8 of the hammer 7 is subjected to a driving force F exerted by the drive spring 12 on the pin 16 fixed to the hammer body 8. E The strong acceleration generated by the action of the hammer achieves the striking of the reed. This strong acceleration is transmitted to the solid axis fixed to the hammer body and defining the second rotation axis 22. In other words, the anti-rebound component 20a is assembled to rotate about this solid axis, which, together with the hammer body 8, is subjected to strong acceleration from the moment the hammer is released by the hammer actuation mechanism. This acceleration is at the center of mass C of the anti-rebound component 20a. M Apparent force F is generated at the location A1 This is because the center of mass is a certain distance away from the second rotation axis 22. In fact, the anti-rebound component 20a is arranged such that, in the first position or the first position interval, its center of mass CM is a certain distance away from a geometric line passing through the second rotation axis and perpendicular to the line connecting the first rotation axis 14 and the second rotation axis 22. The anti-rebound component bears the apparent torque caused by the strong acceleration of the hammer body 8 relative to the hammer body 8. This apparent torque acts on the anti-rebound component at the second rotation axis.

[0069] It is worth noting that the arrangement of the anti-rebound device 45, especially the elasticity of the flexible strip 48, the position of the anti-rebound component, and the pin 28, is designed such that the aforementioned apparent torque causes the anti-rebound component 20a to rotate to the second position or, in the variant shown, to the second position range. Subsequently, the anti-rebound component remains at least in the second position or the second position range until the end of the contact surface 21a of the anti-rebound component moves from the extreme position P of the hammer body 8 of the hammer. E Rotate to contact position P F During the impact, it crosses the contact surface 46a of the first limiting member 46. This is due to the apparent force F. A1 The apparent torque generated acts in the opposite direction to the reset torque, which is produced by the reset force applied by the flexible strip 48 to the pin 28. This reset torque tends to return the anti-rebound component to the first position defined by the second limiter 30. As the anti-rebound component rotates from the first position, the reset torque gradually increases, thus gradually counteracting the apparent torque.

[0070] At the latest when the beak-shaped part 9 contacts the reed 10 ( Figure 4c The anti-rebound component returns to the first position range and strongly impacts the second limiting component 30 during the impact. Figure 4d This generates an apparent force F on the anti-rebound component. A2 The resulting strong apparent torque, the apparent force F A2 The reaction force F of the reed on the hammer body 8 of the hammer. R This generates, and thus acts, on the solid axis around which the anti-rebound component 20a is rotatably mounted, as previously described. It is highly advantageous that the hammer 7 is not stopped or slowed down between its extreme wound position and its contact position (where the beak 9 contacts the reed 10). This is a significant effect of the invention.

[0071] Generally, the direction of the first apparent torque on the anti-rebound component is opposite to the direction of the torque generated by the restoring force of the flexible element (flexible strip 48). The flexible element is arranged such that its restoring force only returns the anti-rebound component to the first position or the first position range after the end of the contact surface 21a of the anti-rebound component 20a moves past the stop surface 46a of the first limiter 46 during the rotation of the hammer body 8 from the limit position to the contact position, and before the hammer body 8 of the hammer reaches the maximum position of the return movement during the return movement.

[0072] In the specific variant shown, since the first limiting member 46 is fixed, and the first position of the anti-rebound member is less stable without external force applied to the hammer (because the anti-rebound member is held against the pin 30 in its first position by only a small force applied to it by the flexible strip 48), the anti-rebound device returns from the second configuration to the first configuration and remains in the first configuration until the protrusion 21 of the anti-rebound member 20a abuts against the first limiting member 46 only during the return movement after impact, once the hammer body 8 of the hammer reaches the first intermediate position ( Figure 4f ) or immediately thereafter. During the return motion, when the movement passes the limit member 46, the protrusion 21 of the anti-rebound member may contact the limit member 46 ( Figure 4e The hammer body 8 rotates, and this rotation is impeded by the restoring force of the flexible strip 48, causing the anti-rebound component to briefly return to the second position range to ensure that the hammer body reaches at least the first intermediate position. The limiting member 46 is configured to facilitate the rotation of the anti-rebound component without preventing the return movement of the hammer body 8, and in particular, without hindering the hammer body from reaching at least the first intermediate position.

[0073] It should be noted that in the second embodiment, by providing a fixed limiting member 46, the first intermediate position and the second intermediate position basically correspond to the same corner position of the hammer body 8 of the sound hammer.

[0074] exist Figure 5 In the simplified diagram, the first and second intermediate positions are considered to be the same intermediate position P. Int The sound-emitting process of the timekeeping device according to the present invention can be summarized as follows: the entire process from the hammer striking the hammer from the resting state until it returns to the resting state. The hammer is driven by the actuation mechanism from the resting position P. R The upper string reaches the extreme position P of the hammer. E During this process, the hammer rotates in the second rotation direction. The hammer is then released, and its body rotates in the first rotation direction, accelerating towards the reed under the driving force FE applied by the drive spring 12 until the striking beak is at the striking / contact position P of the hammer body. F Contact reed. During the rotation of the hammer body along the first rotation direction, a second stage P2 can be defined, which is between the extreme position P. E To the middle position P Int between.

[0075] According to the present invention, the anti-rebound device switches from a first configuration to a second configuration in stages P1 and P2. Specifically, this switching may occur in the first stage P1, i.e., the maximum position P after the hammer 8 completes its return motion after striking. M With extreme position P E Between; or the second stage P2. From the extreme position P of the hammer body EWhen rotation begins in the first direction of rotation, the hammer is not stopped, and at least in the third stage P3 immediately following the second stage P2, the hammer's rotational movement in the first direction is unimpeded, and this third stage continues until the hammer reaches the striking / contact position P. F .

[0076] After the strike is completed, the hammer body 8 of the sound hammer undergoes a return motion, that is, it rotates along the second rotation direction to the maximum return position P. M This return motion defines the fourth stage P4 of the hammer striking process. In a preferred main variant, the anti-rebound device returns from the second configuration to the first configuration in the fourth stage P4, and remains in the first configuration in the subsequent fifth stage P5, whereby the hammer body moves from its maximum position P... M Rotate to rest position P R The final rotation process. After a possible brief final stabilization phase (due to the damping of the rotational motion of the anti-rebound component), the hammer stops again. Figure 2h and Figure 4g In a specific variant, the process of the anti-rebound device transitioning from the second configuration to the first configuration can occur in the third stage P3, at which point the end of the contact surface 21a of the anti-rebound component has crossed the limiting surface of the limiting member.

Claims

1. A mechanism (2, 42) including a striking device (4, 44), the striking device comprising a reed (10), a hammer (6, 6a, 6b, 6c, 7) rotatable about a first rotation axis (14), and a drive spring (12) for driving the hammer to rotate, the hammer having a hammer body (8) having a striking beak (9) disposed in a region away from the first rotation axis, the drive spring being arranged to apply a driving force to the hammer body of the hammer, thereby causing the hammer body to rotate in a first rotation direction, so that the striking beak approaches the reed and allows the striking beak to strike the reed, the striking device (4, 44) comprising a mechanism (2, 42) including a reed (10), a hammer (6, 6a, 6b, 6c, 7) rotatable about a first rotation axis (14), and a drive spring (12) for driving the hammer to rotate, the hammer having a striking beak (9) disposed in a region away from the first rotation axis, the drive spring being arranged to apply a driving force to the hammer body of the hammer, thereby causing the hammer body to rotate in a first rotation direction, so that the striking beak approaches the reed and allows the striking beak to strike the reed, the striking device (4, 44) comprising a reed (10), a hammer (6, 6a, 6b, 6c, 7) rotatable about a first rotation axis (14), and a drive spring (12) for driving the hammer to rotate, the hammer having a striking beak (9) rotatable about a first rotation axis (14), the hammer (10 ... 44) Includes a hammer actuation mechanism for winding the hammer from the resting position of the hammer body where the striking beak is separated from the reed, causing the hammer body to rotate in a second rotation direction opposite to the first rotation direction to the limit position of the hammer body, thereby storing energy in the drive spring, and then releasing the hammer so that the hammer can strike the reed under the action of the driving force; Its features are, The timekeeping device also includes anti-rebound devices (5, 5a, 5b, 5c, 45), which are arranged to alternately function as follows: - In a first configuration, the anti-rebound device prevents the hammer body of the hammer from moving along the first rotational direction before the striking beak can contact the reed, the movement initiating at least a first intermediate position between the rest position and the limit position of the hammer body, regardless of whether the reed is vibrating; and - A second configuration, different from the first configuration, in which the anti-rebound device does not prevent the hammer from rotating along the first rotation direction from the extreme position of the hammer body to the contact position, the contact position being the position where the striking beak contacts the sound spring, provided that the anti-rebound device is in the second configuration when the hammer body passes through a second intermediate position between the rest position and the extreme position; the anti-rebound device does not impede the hammer body of the hammer body at least between the second intermediate position and the contact position, preferably between the extreme position and the contact position; The timekeeping device is arranged such that the hammer body of the striking hammer undergoes a return motion after each strike, the return motion rising at least to the first intermediate position without reaching the extreme position; and the timekeeping device is arranged such that: - When the hammer is at rest and the hammer body is therefore in the rest position, the anti-rebound device remains in the first configuration; - Whenever the hammer is wound by the hammer actuation mechanism or after the hammer is released and before the hammer body (8) reaches the second intermediate position, the anti-rebound device switches to the second configuration; - Subsequently, during the return motion of the hammer body, the anti-rebound device returns to the first configuration; - Thereafter, the anti-rebound device remains in the first configuration until the hammer stops again or is wound again by the hammer actuation mechanism; Therefore, the hammer bounces only once after each strike.

2. The movement according to claim 1, characterized in that, The anti-rebound device includes an anti-rebound component (20, 20a) and a first limiting member (33, 46). The anti-rebound component is rotatably mounted on the hammer body (8) of the hammer (6, 6a, 6b, 6c, 7) about a second rotation axis (22). The first limiting member (33, 46) is mounted on the support member (3) of the hammer and is arranged such that: - When the anti-rebound component is in the second position or the second position range relative to the hammer body when the hammer body moves through the second intermediate position, and the anti-rebound device is therefore in the second configuration, the anti-rebound component (20, 20a) does not contact the first limiting member (33, 46) when the hammer body (8) rotates between the limit position and the contact position; - When the anti-rebound component is in a first position or a first position range relative to the hammer body of the sound hammer, and the anti-rebound device (5, 5a, 5b, 5c, 45) is therefore in the first configuration, the rotational movement of the hammer body of the sound hammer along the first rotation direction from at least the first intermediate position below the limit position is stopped by the anti-rebound component abutting against the first limiting member (33, 46); and - When the hammer is at rest, the anti-rebound component presses against the first limiting member.

3. The movement according to claim 2, characterized in that, The anti-rebound device (5, 5a, 5b) includes flexible members (24, 24a, 24b) fixed to the hammer body (8), the flexible members having recesses (26, 27, ...). In part 27a), the recess has a non-tangential orientation relative to the second rotation axis (22), and preferably is closer in the angular direction to a radial line passing through a point at the bottom of the recess than to a tangential line passing through the bottom of the recess. The recess defines a stable position of the anti-rebound member (20), which includes a support member (28) against which the flexible member can press. The support member is arranged such that when the anti-rebound member is in the stable position, the support member can be at least partially received in the recess with substantially no clearance, and under the action of a torque on the anti-rebound member, the support member can elastically move the portion of the flexible member to disengage from the recess. When the anti-rebound member is in the stable position defined by the recess of the flexible member, the anti-rebound member is in the first position or the second position. The portion of the flexible member forming the recess is configured such that when the recess defines the first position, the anti-rebound member (20) can switch to the second position or a second position range under the action of the torque. When the recess defines the second position, the anti-rebound component can switch to the first position or the first position range under the action of the torque.

4. The movement according to claim 3, characterized in that, The recess (27a) is configured to have a sidewall (27b) that forms a limiting surface for the support (28) and the limiting surface acts in a rotational direction along the anti-rebound member (20) that is opposite to the rotational direction that allows the anti-rebound member to be moved to the second position or the second position interval, or to the first position or the first position interval.

5. The movement according to claim 3 or 4, wherein the portion of the flexible member is a first portion, and the recess (26) is a first recess; characterized in that, The flexible member (24a, 24b) further includes a second portion forming a second recess (27, 27a), the second recess having a non-tangential orientation relative to the second axis of rotation, and preferably being closer in the angular direction to a radial line passing through a point at the bottom of the second recess than to a tangential line passing through the bottom of the second recess. The second recess defines a second stable position of the anti-rebound member. The flexible member is arranged such that when the anti-rebound member is in the second stable position, the support member can be at least partially received in the second recess with substantially no clearance, and under the action of a second torque opposite to the torque acting on the anti-rebound member, the support member allows the second portion of the flexible member to elastically move to disengage from the second recess. When the support member is alternately received in the first recess and the second recess, the first recess defines a first position of the anti-rebound member, the second recess defines a second position of the anti-rebound member, and the second portion of the flexible member is configured such that the anti-rebound member can move to the first position under the action of the second torque.

6. The movement according to claim 2, characterized in that, The anti-rebound device includes flexible members (24, 48) fixed to the hammer body and having sections (25, 25a) capable of applying a restoring force generated by the compressed flexible members to the support members (28) included in the anti-rebound component (20, 20a) in a tangential direction relative to the second rotation axis (22), thereby causing the anti-rebound component to rotate in the tangential direction; the hammer body also has second limiting members (30, 31) arranged to prevent the anti-rebound component from rotating in the tangential direction when the anti-rebound component is in the first position or the second position.

7. The movement according to claim 6, characterized in that, The flexible members (24, 48) are arranged such that the restoring force applied by the section (25, 25a) to the support (28) can return the anti-rebound member to the first or second position defined by the second limiting member, and the restoring force continues to act when the anti-rebound member is already in the first or second position.

8. The movement according to claim 6 or 7, wherein the section (25) is a first section, and the restoring force is a first restoring force; characterized in that, The flexible member (24c) further includes a second section (25a) capable of applying a second restoring force to the support member (28) in a second tangential direction opposite to the tangential direction, thereby causing the anti-rebound member (20) to rotate in the second tangential direction. The hammer body has a third limiting member (31) arranged to prevent the anti-rebound member from rotating in the second tangential direction when the anti-rebound member is in the second position or the first position.

9. The movement according to claim 8, characterized in that, The flexible member (24c) is arranged such that the second restoring force applied by the second section (25a) on the support can restore the anti-rebound member to the second position or the first position defined by the third limiting member (31), and the restoring force continues to act when the anti-rebound member is already in the first position or the second position.

10. The movement according to claim 3 or 4, characterized in that, The flexible member (24) has a section (25) that can apply a restoring force generated by the compressed flexible member to the support member (28) in a tangential direction relative to the second rotation axis (22). The hammer body includes a second limiting member (30) arranged such that: when the recess (26) defines the first position, the second limiting member can prevent the anti-rebound member (20) from rotating in the tangential direction to the second position of the anti-rebound member; and when the recess defines the second position, the second limiting member can prevent the anti-rebound member from rotating in the tangential direction to the first position of the anti-rebound member.

11. The movement according to claim 10, characterized in that, The flexible member (24) is arranged such that when the anti-rebound member (20) is in the second position or the first position, the segment (25) continues to apply a restoring force to the support member (28).

12. The movement according to claim 10 or 11, characterized in that, The recess (26) defines the second position, and the second limiting member (30) defines the first position.

13. The movement according to any one of claims 2 to 12, characterized in that, The anti-rebound device (5) is arranged such that the anti-rebound component (20) switches from the first position or the first position interval to the second position or the second position interval during the process of the hammer (6) being wound by the hammer drive mechanism, that is, between the maximum position of the return movement and the extreme position of the hammer body (8).

14. The movement according to any one of claims 2 to 12, characterized in that, The anti-rebound component (20, 20a) has a center of mass (CM) that is a distance from the second rotation axis (22), and the anti-rebound component has a contact surface (21a) that engages with the first limiting member (33, 46). This contact surface is configured to prevent the hammer body (8) of the sound hammer (6, 6a, 6b, 6c, 7) from rotating in the first rotation direction from at least the first intermediate position when the anti-rebound device (20) is in the first configuration, and to keep the hammer body in the rest position when the sound hammer is in the resting state.

15. The movement according to claim 14, characterized in that, The anti-rebound device (45) is arranged such that the anti-rebound component (20a) switches from the first position or a first position interval to the second position or a second position interval after the hammer (7) is released and before the hammer body (8) reaches the second intermediate position; the anti-rebound component is arranged such that, in the first position or the first position interval, the center of mass is a distance away from a geometric line passing through the second rotation axis (22) and perpendicular to the line connecting the first rotation axis (14) and the second rotation axis; the anti-rebound component is subjected to a first apparent torque relative to the hammer body, the first apparent torque being... The apparent torque originates from the driving force exerted on the hammer body by the drive spring (12), resulting in the acceleration of the hammer body, and thus the acceleration of the anti-rebound component at the second rotation axis; the anti-rebound device is arranged such that the first apparent torque drives the anti-rebound component to rotate to the second position or the second position range and remains in the second position or the second position range until one end of the contact surface (21a) of the anti-rebound component moves past the limiting surface (46a) of the first limiting member (46) during the rotation of the hammer body (8) between the extreme position and the contact position.

16. The movement according to claim 15, 6, or 7, characterized in that, The second limiting member (30) defines a first position of the anti-rebound member (20a); and the first apparent torque on the anti-rebound member is opposite to the torque generated by the reset force, and the flexible member (48) is arranged such that the reset force can only reset the anti-rebound member to the first position or the first position range after one end of the contact surface (21a) of the anti-rebound member passes the stop surface (46a) of the first limiting member (46) during the rotation of the hammer body between the limit position and the contact position, and before the hammer body (8) of the sound hammer (7) reaches the maximum position of the return movement during the return movement.

17. The movement according to any one of claims 14 to 16, characterized in that, The anti-rebound component (20) switches from the second position or the second position interval to the first position or the first position interval, and remains in the first position or the first position interval until the single partial rebound ends, triggered by the hammer body (8) of the sound hammer striking the sound spring; The anti-rebound component is arranged such that, in the second position or the second position interval, the center of mass is a distance away from a geometric line passing through the second rotation axis (22) and perpendicular to the line connecting the first rotation axis (14) and the second rotation axis; When the striking beak (9) stops against the sound spring (10), the anti-rebound component is subjected to a second apparent torque relative to the hammer body due to the reaction force of the sound spring, and the anti-rebound component therefore rotates about the second rotation axis. The anti-rebound device is arranged such that the second apparent torque drives the anti-rebound component to rotate to the first position or the first position range, and remains in the first position or the first position range during the return movement of the hammer body.

18. The movement according to claim 17, characterized in that, The first limiting member (33) is supported by a flexible strip (32) and configured such that during the return movement of the hammer (8) along the second rotation direction, the first limiting member can retract instantaneously under the action of the anti-rebound component (20) that momentarily presses against the first limiting member.

19. The movement according to any one of claims 2 to 16, characterized in that, The first limiting member (46) is fixed. When the hammer (8) reaches or moves past the first intermediate position, the anti-rebound component (20a) switches from the second position or the second position interval to the first position or the first position interval during the return movement. The anti-rebound component will then remain in the first position or the first position interval until the single partial rebound ends.

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