Drive device for timepiece mechanism
By using a single driving member and two transmission members in the clock mechanism, the problem of large size and difficulty in integration of complex function start devices in the prior art is solved, and a simple and compact driving device is realized, which is suitable for equipment with limited space such as watches.
Patent Information
- Application Number
- CN202380069071.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-11-04
- Filing Date
- 2023-07-28
- Publication Date
- 2025-04-25
AI Technical Summary
Existing watch mechanism drives require relatively complex and large-sized designs when activated during elapsed and requested, especially when integrating into watches.
Using a single driving member, the rotation of the driving member is realized by two transmission members (first transmission member and second transmission member). The transmission member drives the driving member to rotate by cooperating with a plurality of support surfaces in the winding and return motion, and actuates alternately without hindering the rotation of the driving member.
The clock mechanism is activated when passing through and when requested by a single drive member, and is simple and compact in design, with minimal moving parts, suitable for integration into space-limited devices such as watches.
Smart Images
Figure CN119895337A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a drive device for a clockwork mechanism. In particular, the present invention relates to a drive device for a clockwork mechanism allowing, in elapsed time or on request, for example an animation, display and / or striking mechanism to be activated. Background Art
[0002] Some timepieces contain one or more complications that allow the display of additional information in addition to the time, for example other time-related information, and / or the creation of decorative and entertaining animations, and / or the emission of sounds, for example indicating the time or an alarm. These complications include clockwork mechanisms that, when integrated into a timepiece, are arranged to be activated at the time of elapse, i.e. at a specific moment, for example at the time of each hour, or at the request of a control member that can be actuated by the user. Typically, the animation or display moves in a cycle: starting from an initial position, one or more animation or display members move in a specific sequence and then return to their initial position. Similarly, the striking mechanism typically emits a predetermined striking cycle, for example corresponding to the time information, each time it is activated.
[0003] The watch mechanism of such a complication is usually associated with a transmission member which transmits to the watch mechanism the energy required to move the animation, display and / or striking member. In the case where the watch mechanism is associated with a watch movement of the watch, the transmission member may be powered, for example, by a drive member of the watch movement, or may be independent of the watch movement.
[0004] The possibility of activating a complication both in elapsed time and on request generally requires a relatively complex clockwork drive device, sometimes requiring two independent drive members. The size and complexity of such a device can complicate its integration into a timepiece, especially a wristwatch. Summary of the invention
[0005] The object of the present invention is to propose a drive device for a timepiece mechanism which allows the timepiece mechanism to be started both in passing and on request by means of a single drive member.
[0006] Another object of the invention is to propose a drive device for a clockwork mechanism which allows the clockwork mechanism to be activated both in passing and on request in a simple and compact manner and using a minimum of moving parts.
[0007] These objects and other advantages are achieved by a drive device for a clockwork mechanism, comprising: a drive member, which is installed to be rotatable and movable around a rotation axis and is configured to drive the clockwork mechanism, the drive member including a plurality of bearing surfaces; a first transmission member, which is movable in a winding movement from a first position of the first transmission member to a second position of the first transmission member and a return movement from its second position to its first position; a second transmission member, which is movable in a winding movement from a first position of the second transmission member to a second position of the second transmission member and a return movement from its second position to its first position; each transmission member is configured to drive the drive member to rotate by cooperating with a bearing surface of the plurality of bearing surfaces in the return movement from its second position to its first position; the second transmission member is configured not to hinder the rotation of the drive member when the first transmission member drives the drive member, and the first transmission member is configured not to hinder the rotation of the drive member when the second transmission member drives the drive member.
[0008] Thus, the clockwork can be driven by a single drive member, which can be moved by the first transmission member or the second transmission member, without the movement of the drive member being blocked by an inactive transmission member.
[0009] The first transmission member and the second transmission member are preferably mounted so as to be rotationally movable about a rotation axis and to rotate in one rotation direction during a winding movement and in an opposite rotation direction during a returning movement.
[0010] According to a preferred embodiment, the first transmission member and the second transmission member each include a pushing member, which is used to cooperate with the supporting surface to cause the driving member to rotate, each pushing member is located at the distal end of the flexible arm, and the proximal end of each of the flexible arms is installed to be rotatable around the rotation axis.
[0011] The first and second transmission members may each be pressed by their push members against a bearing surface of the drive member, thereby causing the drive member to rotate, the inactive transmission member allowing the drive member to rotate in a ratchet manner.
[0012] According to some embodiments, the drive device further comprises: a first spring, which moves the first transmission member from its second position to its first position during its winding movement; and a second spring, which moves the second transmission member from its second position to its first position during its winding movement. The first spring and the second spring are preferably configured to wind up during the winding movement of the respective transmission members from their first position to their second position, the winding movement being achieved by overcoming the restoring force of the springs.
[0013] For example, the drive member comprises teeth.
[0014] The bearing surfaces are preferably evenly distributed around the axis of rotation over the diameter of the drive member. This allows the drive member to be advanced stepwise each time it is activated by the transmission member, the angular spacing of the drive member corresponding for example to the angle between two adjacent bearing surfaces, or a multiple thereof.
[0015] The bearing surface is preferably formed on the inner periphery of a ring of the drive member, which ring is preferably located at a position protruding from the plate of the drive member. This has the advantage that the transmission member can be arranged at least partially within this ring, thereby allowing the drive device according to the invention to have a compact design.
[0016] Optionally, the drive device comprises a deactivation mechanism which allows, for example, the first transmission member to be decoupled from the drive member. This allows, when setting the time of the watch movement, in particular when the watch movement controls the first transmission member during elapsed time, to deactivate the first transmission member in order to avoid damaging the drive device. Alternatively or in addition, this also allows, under appropriate control, to temporarily deactivate a watch mechanism driven by the drive device.
[0017] The above objects and other advantages are also achieved by a timepiece, which includes a timepiece movement and the above-mentioned drive device, wherein the first transmission member is moved from its first position to its second position by the timepiece movement during its winding movement, and the second transmission member is configured to be moved from its first position to its second position during its winding movement by a manual control mechanism.
[0018] In such a timepiece, the deactivation mechanism is preferably automatically actuated when the timepiece movement is able to receive a time-setting operation, for example when the winding stem is pulled out.
[0019] Alternatively or additionally, the deactivation mechanism may be activated upon user request, such as an "on / off" button accessible to a user using the timepiece.
[0020] The timepiece is, for example, a wristwatch. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present invention will be better understood through the following description in conjunction with the accompanying drawings, in which:
[0022] Figure 1 Partially illustrates a drive device according to an embodiment of the present invention;
[0023] Figure 2 yes Figure 1 A perspective view of the drive device shown in part;
[0024] Figures 3 to 7 Shows Figure 1 The driving device is started by the first transmission member;
[0025] Figures 8 to 11 Shows Figure 1The driving device is started by the second transmission member;
[0026] Fig.12 Shown in detail Figure 1 A deactivation mechanism for the drive device. DETAILED DESCRIPTION
[0027] The drive device 1 of the invention is a device that allows a clockwork, not shown, such as an animation, display and / or striking mechanism to be activated in passing or on request. Preferably, the drive device 1 is intended to drive a clockwork that operates in a cyclical manner, such as by an animation, display or striking cycle, and the drive device 1 is configured to advance step by step, each step preferably corresponding to a cycle of the clockwork driven.
[0028] With reference to the accompanying drawings, the drive device 1 of the present invention comprises a drive member 2, which is mounted to be rotatable around a rotation axis 10. The drive member 2 is configured to drive a clock mechanism driven by the drive device 1. According to the illustrated embodiment, the drive member 2 is, for example, a gear, and the toothed member 29 is intended to mesh with a matching moving member, such as a gear, not shown, of the clock mechanism. However, within the scope of the present invention, other configurations of the drive member are also possible. According to some embodiments, the drive member is, for example, a cam or toothed member of a hammer member for actuating a striking mechanism.
[0029] According to the invention, the drive device 1 comprises two transmission members 3, 4 for moving the drive member 2 around the rotation axis 10, thereby actuating the clockwork driven by the drive device 1. According to the invention, each transmission member 3, 4 is configured to move only the drive member 2. Each transmission member 3, 4 is also configured to allow the drive member 2 to move when the drive member 2 is moved by the other transmission member 4, 3. Each time the drive member 2 is moved by the transmission members 3, 4, it preferably advances a predetermined step in one rotation direction, for example in the clockwise direction. The step is preferably determined to correspond to the drive of the clockwork in one complete cycle.
[0030] As explained in detail below, each transmission member 3, 4 is configured to reciprocate between a first position, such as an inactive position, and a second position, such as a wound position. During the movement of the transmission member 3, 4 from its inactive position to its wound position, the drive member 2 is not moved by the transmission member 3, 4. During the return of the transmission member 3, 4 in the opposite direction from its wound position to its inactive position, the drive member moves and rotates one step in a specific direction, such as in a clockwise direction, around the rotation axis 10.
[0031] In the embodiment shown, each transmission member 3, 4 comprises a push member 30, 40 configured to come into contact with the bearing surface 21 of the drive member 2 to cause the drive member 2 to rotate for at least a fraction of a revolution, for example corresponding to a complete cycle of the clockwork driven by the drive device 1. Each push member 30, 40 is, for example, located at the distal end of a flexible arm 31, 41, the proximal end of which is mounted, for example, to rotate about the rotation axis 10, about which the drive member 2 is also mounted. Each flexible arm 31, 41 is preferably configured to be flexible in a radial direction relative to the rotation axis 10 so as to be able to slide on its surface when the drive member 2 is moved by the other flexible arm 41, 31, and to be rigid in a tangential direction relative to the rotation axis 10 so as to be able to cause the drive member 2 to rotate by the cooperation of the corresponding push member 30, 40 and the bearing surface 21. Each transmission member 3, 4 thus acts like a pawl, allowing the drive member 2 to rotate relative to the transmission member 3, 4 in a first rotational direction and blocking the drive member 2 from rotating relative to the transmission member 3, 4 in a second rotational direction opposite to the first rotational direction, once the corresponding push member 30, 40 contacts the bearing surface 21 of the drive member 2. Each flexible arm 31, 41, for example, includes a rigid base and an elongated portion, the rigid base being rotatably mounted on the rotation shaft 10 and extending substantially radially from the rotation shaft 10, the elongated portion extending substantially in a circular arc shape relative to the rotation shaft 10 from the end of the rigid base and being flexible in a radial direction relative to the rotation shaft 10.
[0032] According to this embodiment, the drive member 2 preferably comprises a plurality of bearing surfaces 21, which are intended to cooperate with the thrust members 30, 40 to rotate the drive member 2. The bearing surfaces 21 are formed, for example, by inner grooves formed on a ring 20 of the drive member 2. The ring 20 is, for example, located at a position protruding from a plate of the drive member 2. The ring 20 is, for example, integrally formed with the drive member 2, or fixed, for example, welded to the drive member 2. The grooves are preferably evenly distributed on the inner periphery of the ring 20. In the case shown, there are five grooves, each of which is 72° apart.
[0033] Preferably, the transmission members 3, 4 are configured to be actuated independently of each other. The first transmission member 3 of the two transmission members 3, 4 is for example intended to be actuated by a watch movement, for example a watch movement of a watch incorporating the drive device 1 and a watch mechanism driven by the drive device 1. The second transmission member 4 of the two transmission members 3, 4 is for example intended to be actuated by a control mechanism that can be actuated at the request of the watch user using, for example, a button on the watch case or other suitable actuator.
[0034] Reference Figure 2, the first transmission member 3 comprises, for example, a pinion 32 fixed to a flexible arm 31 of the first transmission member 3 for co-rotation with said arm. The pinion 32 meshes, for example, with a first rack 39 intended to be driven by a watch movement. When the drive device 1 is integrated into a watch, the operation of the watch movement of the watch, for example, drives the first rack 39 to perform a winding movement to rotate in a clockwise direction against the force of a first spring 38, for example a first leaf spring. The rotation of the first rack 39 in the clockwise direction drives the first transmission member 3 to rotate in a counterclockwise direction. The first spring 38 exerts an elastic force on the first rack 39 which tends to return it in a counterclockwise direction to a first position of the first rack 39, typically an inactive position, corresponding to the first position of the first transmission member 3. At a moment determined by the watch movement, the first rack 39, which has reached a second position corresponding to the second position of the first transmission member 3 (typically a winding position), is released by the watch movement and returns to its inactive position in a counterclockwise direction under the action of the first spring 38. In this way, it drives the first transmission member 3 to rotate in the clockwise direction for at least a small part of one revolution. As explained in more detail below, during the return movement of the first rack 39, the pusher member 30 of the first transmission member 3 abuts against the bearing surface 21 of the drive member 2 and causes it to rotate for a small part of one revolution, preferably corresponding to the cycle of the clockwork driven by the drive device 1, such as an animation, display and / or timekeeping cycle.
[0035] The second transmission member 4 comprises, for example, a rack 42 fixed to a flexible arm 41 of the second transmission member 4 for co-rotation with said arm. The rack 42 meshes, for example, with a second rack 49 intended to be driven by a control mechanism upon request. When the user of the timepiece incorporating the drive device actuates the control mechanism, for example by pressing a button on the timepiece, the second rack 49 is driven to perform a winding movement to rotate in a clockwise direction against the force of a second spring 48, for example a second leaf spring. The rotation of the first rack 39 in the clockwise direction drives the first transmission member 3 in a counterclockwise direction. The first spring 38 exerts an elastic force on the second rack 49 which tends to return it in a counterclockwise direction to a first position of the second rack 49, typically an inactive position, corresponding to the first position of the second transmission member 4. For example, when the user releases the button and / or when the button has moved a predetermined distance, the second rack 49, which has reached a second position corresponding to the second position of the second transmission member 4 (usually the winding position), is released by the manual control mechanism and returns to its inactive position in the counterclockwise direction under the action of the second spring 48. In this way, it drives the second transmission member 4 to rotate in the clockwise direction for at least a small part of one revolution. As explained in detail below, during the return movement of the second rack 49, the push member 40 of the second transmission member 4 abuts against the support surface 21 of the drive member 2 and causes it to rotate for a small part of one revolution, preferably corresponding to the cycle of the clockwork mechanism driven by the drive device 1, such as an animation, display and / or timekeeping cycle.
[0036] According to the embodiment shown, during each return movement of the first rack 39 or the second rack 49, the drive member 2 is driven by the respective transmission member 3, 4 to rotate a certain fraction of a revolution, for example one fifth of a revolution, i.e. 72 degrees. This fraction of a revolution corresponds to a step length of the drive member 2, preferably to the angular spacing between two adjacent bearing surfaces 21 of the drive member 2, or a multiple thereof.
[0037] Figures 3 to 7 The winding movement of the first transmission member 3 and the rotation of the drive member 2 in the return movement of the first transmission member 3 are shown.
[0038] Relative to Figure 1 The first position of the first transmission member 3 and the second transmission member 4 shown in FIG. 1 is usually an inactive position, Figure 3The first transmission member 3 is shown partially wound, typically between two starts of the clockwork driven by the drive device 1 when it passes. During the winding movement of the first transmission member 3, the second transmission member 4 and the drive member 2 are stationary, provided that the control mechanism of the second transmission member 4 is not actuated by the user. As previously mentioned, the first transmission member 3 is preferably driven in the counterclockwise direction by the clockwork movement of the clockwork in which the drive device 1 is integrated. The rotation speed of the first transmission member 3 during the winding movement is determined by the appropriate construction of the kinematic chain linking the first transmission member 3 and the clockwork movement, for example according to the periodicity with which the clockwork must be started, for example every 15 minutes, every hour, once or twice a day, etc. During the winding movement, the push member 30 of the first transmission member 3 slides along the inner periphery of the ring 20 under the action of the friction determined by the flexibility of its flexible arms 31.
[0039] Figure 4 It is shown that when the first transmission member 3 is about to be wound up, its pushing member 30 is about to fall into the next groove of the ring 20 under the elastic force of the flexible arm 31 . Figure 5 The second position of the first transmission member 3 at the end of the winding movement is shown, which is usually the winding position. Preferably, the angular displacement of the first transmission member 3 during the winding movement is greater than the angular spacing between the two grooves of the drive member 2 to ensure that the push member 30 passes over the next groove at the end of the winding movement, such as Figure 4 In the embodiment shown, for example, there are five grooves with an angular spacing of 72° between them. Therefore, the first transmission member 3 rotates during the winding movement by an angle greater than 72°, preferably, by an angle greater than 80°, for example, 90°.
[0040] At a moment determined by the watch movement, the wound first transmission member 3 is released and tends to return from the second position, usually the wound position, to the first position in a clockwise direction under the action of the first spring 38, usually as shown in FIG. Figure 1 During the return movement of the first transmission member 3, the push member 30 of the first transmission member 3 is inserted into the next groove of the ring 20, as shown. Figure 6 As shown, and pressed against the corresponding support surface 21, the drive member 2 moves in the clockwise direction, as shown in FIG. Figure 7 As shown. During the rotational movement of the drive member 2 under the action of the first transmission member 3, the push member 40 of the second transmission member 4 slides on the inner periphery of the ring 20 without hindering this rotation under the action of a force determined by the flexibility of the flexible arms 41 of the second transmission member 4 and the type and surface conditions of the materials used to manufacture the flexible arms 41 and the ring 20. At the end of the return movement of the first transmission member 3, the drive member 2 has rotated an angle corresponding to the angular spacing between the two bearing surfaces 21, for example one fifth of a turn, and the first transmission member 3 is again in Figure 1 Inactive position shown.
[0041] Figures 8 to 11 The situation in which the drive member 2 is activated by the second transmission member 4 is shown, for example on request between two activations when the first transmission member 3 passes by. Figure 8 An example of a starting position is shown, in which the first transmission member 3 is partially wound and the second transmission member 4 is in a first position, typically its inactive position. First, the second transmission member 4 is wound by a manual control mechanism actuated by a button on the timepiece operable by the user. During the winding movement, the second transmission member 4 is driven in the counterclockwise direction and the push member 40 of the second transmission member 4 slides along the inner periphery of the ring 20 until the next groove is crossed. The angular displacement of the second transmission member 4 during the winding movement is preferably greater than the angular spacing between the two grooves of the drive member 2, so as to ensure that the push member 40 crosses the next groove at the end of the winding movement, as shown in FIG. Fig. 9 In the embodiment shown, for example, the second transmission member 4 rotates through an angle greater than 72°, preferably greater than 80°, such as 90°, during the winding movement. Fig. 9 In the second position shown, usually the wound position, the second transmission member 4 is released and tends to return from its second position, usually the wound position, to its first position, usually the inactive position, in a clockwise direction under the action of the second spring 48. During the return movement of the second transmission member 4, the push member 40 of the second transmission member 4 is inserted into the next groove of the ring 20, as shown in FIG. Fig.10 As shown, and pressed against the corresponding bearing surface 21, so that the drive member 2 moves in the clockwise direction, as shown in FIG. Fig.11 As shown. During this rotational movement of the drive member 2 under the action of the second transmission member 4, the push member 30 of the first transmission member 3 slides on the inner periphery of the ring 20 without hindering this rotation under the action of a force determined by the flexibility of the flexible arms 31 of the first transmission member 3 and the type and surface conditions of the materials used to manufacture the flexible arms 31 and the ring 20. At the end of the return movement of the second transmission member 4, the drive member 2 has rotated by an angle corresponding to the angular spacing between the two bearing surfaces 21, for example one fifth of a turn, and the second transmission member 4 is again in a position, for example Figure 8 Inactive position shown.
[0042] like Figure 2 As shown, the flexible arms 31 of the first transmission member 3 are preferably located in a different plane than the flexible arms 41 of the second transmission member 4, which allows each transmission member 3, 4 to move independently without risk of collision.
[0043] Preferably, with reference to Fig.12, the drive device 1 of the present invention also includes a disabling mechanism, which makes it possible to deactivate the first transmission member 3, so as to allow, for example, the time setting of the clock integrated with the drive device 1 without the risk of damaging the drive device or being triggered by the first transmission member 3. The disabling mechanism is automatically actuated, for example, by the winding rod, during the time setting process of the clock. Alternatively or in addition, the disabling mechanism can be actuated according to request, for example, allowing the user of the clock to temporarily deactivate the actuation when the clockwork driven by the drive device 1 of the present invention passes. This allows, for example, the user to deactivate the corresponding animation, display and / or time reporting of the clock within a specific time. For example, a button, such as the "on / off" button of the clock that the user can operate, is used to realize the request actuation of the disabling mechanism 5.
[0044] According to the embodiment shown, the deactivation mechanism comprises a deactivation arm 5 acting on the flexible arm 31 of the first transmission member 3, counteracting the restoring force of the first transmission member 3 to move the push member 30 of the first transmission member 3 away from the ring 20 so that it is no longer in contact with the bearing surface 21. The deactivation arm 5 acts on the flexible arm 31 of the first transmission member 3, for example on the corresponding push member 30, for example by means of a pin 33 preferably located near the distal end of the flexible arm 31.
[0045] According to the embodiment shown, the drive member 2 comprises five bearing surfaces 21 evenly distributed around the rotation axis 10, located on the diameter of the drive member 2. However, within the scope of the invention, other embodiments are also possible. In particular, the number of bearing surfaces can be different, for example determined by the angular spacing that the drive member must cover at each start to drive the clockwork to complete a complete cycle. For example, if the clockwork driven by the drive device is configured to realize a series of cycles, some of which have different durations in the cycle sequence, the distribution of the bearing surfaces around the rotation axis can also be irregular.
[0046] The drive device of the present invention may also be configured such that each time the drive member is activated by the first transmission member and / or the second transmission member, the drive member rotates by a step length which is a multiple of the angular spacing between two adjacent bearing surfaces.
[0047] According to the embodiment shown, the transmission member is configured to drive the drive member to rotate in the clockwise direction in each step, and each actuating member 3, 4 is configured to rotate in the counterclockwise direction in the up-winding movement and in the clockwise direction in the return movement. Of course, within the scope of the present invention, the transmission member can also be configured to drive the drive member to rotate in the counterclockwise direction in each step, so each actuating member 3, 4 is configured to rotate in the clockwise direction in the up-winding movement and in the counterclockwise direction in the return movement, so the direction of the bearing surface of the drive member is opposite to the direction of the bearing surface 21 of the drive member 2 shown.
[0048] According to the embodiment shown, the transmission member is configured to cause the drive member to rotate. However, within the scope of the invention, other embodiments are also possible. For example, it is also conceivable to configure the transmission member to pull the drive member using a hook that cooperates with a suitable bearing surface of the drive member.
[0049] According to the embodiment shown, the transmission member will be transmitted to the drive member by the power established and pre-accumulated by the spring during the winding process of the corresponding transmission member, for example using a watch movement or using a manual control mechanism, so as to move it. However, other power sources can also be used to move the transmission member. For example, the transmission member can be driven to reciprocate directly by the watch movement through a suitable disconnection system, by a manual lever, etc.
[0050] The kinematic chain elements between the transmission member and the corresponding power source can also be different from the rack and pinion implemented in the illustrated embodiment. These kinematic chains can for example include other types of gears and / or other forms of transmission elements, such as pulleys or any other suitable components.
[0051] The drive device has been described above with two transmission members, which act on the same drive member and are actuated in different ways according to different criteria. Of course, within the scope of the present invention, the drive device may include more than two transmission members, which are configured to act on the same drive member to move it. According to some embodiments, for example, the drive device includes a third drive member in addition to the first and second drive members described above, which is configured to preferably move the drive member according to other criteria. The third drive member is actuated, for example, by a dedicated mechanism according to external prompts such as environmental prompts (e.g., pressure changes, acceleration, etc.).
Claims
1. A driving device (1) for a clock mechanism, comprising: - a drive member (2) mounted so as to be movable in rotation about an axis of rotation (10) and configured to drive a clockwork mechanism, said drive member (2) comprising a plurality of bearing surfaces (21); - a first transmission member (3) movable in an up-winding movement from a first position of the first transmission member (3) to a second position of the first transmission member (3) and in a return movement from the second position of the first transmission member (3) to the first position of the first transmission member (3); - a second transmission member (4) movable in a winding movement from a first position of the second transmission member (4) to a second position of the second transmission member (4) and in a return movement from the second position of the second transmission member (4) to the first position of the second transmission member (4); Each transmission member (3; 4) is configured to drive the drive member (2) in rotation by cooperating with a bearing surface (21) of the plurality of bearing surfaces (21) during a return movement from its second position to its first position; The second transmission member (4) is configured not to hinder the rotation of the drive member (2) when the first transmission member (3) drives the drive member (2), and the first transmission member (3) is configured not to hinder the rotation of the drive member (2) when the second transmission member (4) drives the drive member (2).
2. The drive device (1) according to the preceding claim, the first transmission member (3) and the second transmission member (4) being mounted so as to be rotationally movable about the rotation axis (10) and rotating in one rotation direction during the winding movement and in the opposite rotation direction during the return movement.
3. The drive device (1) according to the preceding claim, wherein: The first transmission member (3) and the second transmission member (4) each include a pushing member (30, 40), the pushing member (30, 40) being used to cooperate with a supporting surface (21) among the plurality of supporting surfaces (21) to cause the driving member (2) to rotate, each pushing member (30, 40) being located at the distal end of a flexible arm (30, 40), and the proximal end of each of the flexible arms (30, 40) being mounted to be rotatable around the rotation axis (10).
4. The drive device (1) according to one of the preceding claims, further comprising a first spring (38) and a second spring (48), wherein the first spring (38) moves the first transmission member (3) from its second position to its first position during its return movement, and the second spring (48) moves the second transmission member (4) from its second position to its first position during its return movement.
5. Drive device (1) according to the preceding claim, the first spring (38) and the second spring (48) being configured to be wound up during a winding movement of the respective transmission member (3, 4).
6. Drive device (1) according to one of the preceding claims, wherein: The drive member (2) comprises a toothed element.
7. Drive device (1) according to one of the preceding claims, wherein: The bearing surfaces (21) of the plurality of bearing surfaces (21) are evenly distributed around the rotation axis (10) over the diameter of the drive member (2).
8. Drive device (1) according to the preceding claim, wherein: The bearing surfaces (21) of the plurality of bearing surfaces (21) are formed on the inner periphery of a ring (20) of the drive member (2), the ring (20) preferably being located at a position protruding from a plate of the drive member.
9. Drive device (1) according to one of the preceding claims, comprising a deactivation mechanism (5) which allows uncoupling the first transmission member (3) from the drive member (2).
10. A timepiece comprising a timepiece movement and a drive device (1) according to one of the preceding claims, wherein: The first transmission member (3) is moved from its first position to its second position by the watch movement during its winding movement, and the second transmission member (4) is configured to be moved from its first position to its second position by a manual control mechanism during its winding movement.
11. A timepiece according to the preceding claim, wherein: The deactivation mechanism (5) is automatically activated when the timepiece movement is able to receive a time setting operation.
12. Timepiece according to one of claims 10 and 11, wherein: The deactivation mechanism (5) is actuable upon user request.