Timepiece movement comprising a mechanical oscillator and an oscillator stop device

Abstract

The utility model relates to a kind of clock movement, comprising: mechanical oscillator, it includes the balance wheel being coupled with elastic component;And control rod, it can be moved between first axial position and second axial position, the stop device of mechanical oscillator cooperates with control rod;Its characterized in that, stop device includes elastic component, the elastic component has: with the first fixed component of the integrated clock movement splint or table bridge;And second flexible component, at least a part of the second flexible component is elastically deformable, the second flexible component is configured to be directly abutted on the circumference of balance wheel rim in the second axial position of control rod, while in the first axial position of control rod, it is kept away from balance wheel;And the second end of control rod changes the elastic deformation state of second flexible component between the first axial position and the second axial position of control rod.

Description

Technical Field

[0001] This utility model relates to the adjustment system of watch movement.

[0002] More specifically, this invention relates to a stop device capable of stopping a mechanical oscillator mounted on a watch movement regulating system, particularly during time setting operations. Background Technology

[0003] Typically, the regulating system mainly consists of a mechanical oscillator, which includes a balance wheel and elastic components.

[0004] In high-end timepieces, the regulating system may also include a stop device for stopping the mechanical oscillator.

[0005] This oscillator stop device, also known as a "balance wheel stop device," is used to stop the oscillation of the balance wheel, for example, during the operation of setting the time via a control lever, thereby fixing the position of the second hand. This stop device can restart the watch movement at a precise instant.

[0006] Traditionally used mechanical oscillator stop mechanisms, typically for the balance wheel, include stop levers controlled by the position of a timepiece's control lever or by pressing a button. Typically, one end of the stop lever rests against the outer circumference of the balance wheel rim or on the balance wheel's axis.

[0007] When the winding shank moves to the time setting position T2, the stop lever is typically activated by a sliding pinion mounted on the winding shank. The stop lever can also be connected to a pull tab to repeat this action.

[0008] The stop bar is a rigid component that rests against the rim of the balance wheel. Depending on manufacturing and assembly tolerances, it may apply excessive force to the balance wheel, causing premature wear of the balance wheel shaft and pivot.

[0009] Therefore, it is necessary to improve the stopping mechanism of the mechanical oscillator in watch movements. Utility Model Content

[0010] The present invention aims to remedy at least one of the aforementioned defects by providing a watch movement, the movement comprising:

[0011] - A mechanical oscillator that oscillates around an oscillation axis, comprising a balance wheel connected to an elastic component;

[0012] - A control lever that can be activated by the user, the control lever being able to translate along the axis of rotation of the control lever between a first axial position and a second axial position, the control lever including a first end that engages with the crown and a second end that is opposite to the crown;

[0013] - A stop device for stopping a mechanical oscillator, which cooperates with a control lever and is configured to lock the balance wheel in the appropriate position according to the user's requirements;

[0014] The stopping device is characterized by comprising an elastic component having: a first fixed component integrally connected to the watch movement plate or bridge; and a second flexible component, at least a portion of which is elastically deformable, the second flexible component being configured to directly abut against the circumference of the balance wheel rim in a second axial position of the control lever, while maintaining a distance from the balance wheel in a first axial position of the control lever; and the second end of the control lever changing the elastic deformation state of the second flexible component between the first and second axial positions of the control lever.

[0015] Preferably, the control lever is a winding stem that can rotate along the axis of rotation, the first axial position T1 is the winding position of the watch movement, and the second axial position T2 is the time setting position of the watch movement.

[0016] Preferably, the second end of the control lever is configured to contact the second flexible member, such that the second flexible member is directly deformed by the second end of the control lever.

[0017] Preferably, the stopping device includes a stop rod disposed between the control rod and the elastic member, the stop rod directly engaging with the second flexible member, and the second end of the control rod being configured to contact the stop rod.

[0018] Preferably, the elastic component is a leaf spring. Attached Figure Description

[0019] The following detailed description, with reference to the figures, will demonstrate the purpose, advantages, and features of this utility model:

[0020] - Figure 1 The illustration schematically depicts a first embodiment of a watch movement adjustment system according to the present invention, the system comprising a mechanical oscillator and a mechanical oscillator stop device; Figure 1 The stop device in the non-starting position is specifically described;

[0021] - Figure 2 The illustration schematically shows the situation when the stop device is in the activated position and the mechanical oscillator is in a stationary state. Figure 1 The regulation system;

[0022] - Figure 3 A second embodiment of a watch movement adjustment system according to the present invention is schematically illustrated, the system comprising a mechanical oscillator and a mechanical oscillator stop device; Figure 3 The stop device in the non-starting position is specifically illustrated;

[0023] - Figure 4The illustration schematically shows the situation when the stop device is in the activated position and the mechanical oscillator is in a stationary state. Figure 3 The regulatory system.

[0024] In all images, unless otherwise stated, the same elements have the same numbering. Detailed Implementation

[0025] Figures 1 to 2 The illustration schematically depicts different states of a first embodiment of the adjustment system 100 of a watch movement 200 according to the present invention, which includes a stop device 150 for stopping the mechanical oscillator 120 of the adjustment system 100.

[0026] Figure 1 The illustration specifically shows the operation of the regulating system 100 when the stop device 150 is in the non-starting position (stationary position). In this position, the mechanical oscillator 120 oscillates freely.

[0027] Figure 2 The illustration shows the state of the adjustment system 100 at the moment when the stop device 150 is activated, at which time the stop device 150 is in the activated position and the mechanical oscillator 120 is stopped.

[0028] The regulating system 100 of the watch movement 200 typically includes: a mechanical oscillator 120 oscillating around an oscillation axis A1; an anchor 110; and an escapement wheel 140.

[0029] The mechanical oscillator 120 includes a balance wheel 121 with a rim 122, which is typically circular, and is connected to a central portion via a balance wheel arm. The central portion is integrally connected to the balance wheel shaft extending along the oscillation axis A1.

[0030] Typically, the balance wheel 121 is connected to a flexible component, such as the hairspring 130. The hairspring 130 is connected to the balance wheel 121 in a conventional manner.

[0031] Each oscillation of the mechanical oscillator 120 is defined by two alternating continuous motions, characterized in that the balance wheel 121 rotates in a first rotational direction and then in the opposite second rotational direction.

[0032] According to the present invention, the adjustment system 100 includes a stop device 150, which can prevent the mechanical oscillator 120 from oscillating, especially the balance wheel 121, according to the user's requirements.

[0033] The stop device 150 includes a resilient member 151, such as a leaf spring, which includes a first fixing member 151.1 forming a first end of the resilient member 151. The first fixing member 151.1 is integrally connected to the plate or bridge of the watch movement 200. For example, the first fixing member 151.1 is integrally connected to the plate or bridge with screws.

[0034] The elastic member 151 includes a second flexible member 151.2 that extends to a second free end 151.3 of the elastic member 151 relative to the first end 151.1.

[0035] The second flexible component 151.2 includes at least one elastically deformable portion.

[0036] The second flexible member 151.2 is shaped to fit the rim 122 of the balance wheel 121. More specifically, the second flexible member 151.2 is configured to abut against the rim 122 of the balance wheel 121 to generate a frictional force that prevents the balance wheel 121 from oscillating when the stop device 150 is activated by the user.

[0037] The second flexible member 151.2 is configured to abut against the rim 122 of the balance wheel 121 at a portion near the second end of the elastic member 151.

[0038] The second flexible component 151.2 is configured to abut against the outer periphery of the rim 122 of the balance wheel 121.

[0039] Preferably, the elastically deformable portion of the second flexible member 151.2 is close to the first fixed member 151.1 forming the first end of the elastic member 151.

[0040] Depending on the axial position of the control lever 10 of the watch movement 200, the second flexible component 151.2 of the elastic component 151 has two different positions and two deformation states.

[0041] For example, the control lever 10 is the winding stem of the watch movement 200 that can be operated by the user.

[0042] The control lever 10 is capable of rotating and translating along its rotation axis X.

[0043] The control lever 10 is able to Figure 1 and Figure 3 The first axial position T1 shown is... Figure 2 and Figure 4 The second axial position T2 is translated between.

[0044] The first axial position T1 of the control lever 10 is typically the winding position of the watch movement 200, and the second axial position T2 is the time setting position of the watch movement 200. Therefore, the second axial position T2 of the control lever 10 for time setting can activate the stop device 150 to stop the balance wheel 121 from oscillating and enable the watch movement 200 to accurately set the time.

[0045] The control lever 10 includes a first end 10.1 that engages with the crown 50 and a second end 10.2 that is opposite to the crown 50. The former can be operated by the user, while the latter engages with the watch movement and the stop device 150 of this invention.

[0046] The second end 10.2 of the control lever 10 directly or indirectly cooperates with the elastic component 151 of the stop device 150 to change the elastic deformation state of the second flexible component 151.2, and change the relative position of the second flexible component 151.2 with respect to the rim 122 of the balance wheel 121 according to the axial positions T1 and T2 of the control lever 10.

[0047] At the first axial position T1 of the control lever 10, the second end 10.2 of the control lever 10 engages with the elastic member 151, thereby keeping the second flexible member 151.2 at a distance from the balance wheel 121. The second end 10.2 causes the second flexible member 151.2 to undergo elastic deformation, moving it away from the balance wheel 121.

[0048] At the second axial position T2 of the control lever 10, the second end 10.2 of the control lever 10 is not engaged with the elastic member 151, so that the second flexible member 151.2 is no longer constrained by the control lever 10. Therefore, the second flexible member 151.2 can freely abut against the circumference of the rim 122 of the balance wheel 121 through the elastic reset of the second flexible member 151.2 was previously prestressed by the second end 10.2 of the control lever 10 at the axial position T1 of winding.

[0049] exist Figures 1 to 2 In the first embodiment shown, the stop device 150 further includes a rigid stop rod 156 rotatable about its axis of rotation A2. The stop rod 156 is an intermediate component disposed between the elastic member 150 and the control rod 10, so that the second end 10.2 of the control rod 10 does not directly contact the elastic member 151. In this embodiment, the second end 10.2 of the control rod 10 acts directly on the stop rod 156, and when the control rod 10 is in its axial position T1, the stop rod 156 constrains the second elastic member 151.2.

[0050] When the control lever 10 is moved to the T2 position, a positioning stop 157 can be set to limit the rotation of the stop lever 156 during the elastic reset of the elastic member 151.

[0051] exist Figures 3 to 4 In the second embodiment shown, the second end 10.2 of the control lever 10 is in direct contact with the second flexible member 151.2 of the elastic member 151 so as to apply prestress to the second flexible member 151.2 at the axial position T1 of the control lever 10, as previously described.

[0052] At the axial position T2 for time setting, the axial movement of the second end 10.2 of the control lever 10 releases the second flexible member 151.2 of the elastic member 151, which is then freed to contact the rim 122 of the balance wheel 121 by elastic reset.

[0053] It should generally be noted that when the second flexible member 151.2 of the elastic member 151 contacts the balance wheel 121, especially in order to ensure contact with the balance wheel 121 and to ensure sufficient friction to stop the balance wheel 121, the elastic member 151 is always in a constrained state, unlike its free state.

[0054] This utility model also relates to a timepiece incorporating the watch movement 200 of this utility model.

Claims

1. A watch movement (200), comprising: - A mechanical oscillator (120) oscillating about an oscillation axis (A1), which includes a balance wheel (121) connected to an elastic member (130). - A control lever (10) that can be activated by a user, the control lever (10) being able to translate along the rotation axis (X) of the control lever between a first axial position (T1) and a second axial position (T2), the control lever (10) including a first end (10.1) that engages with a crown (50) and a second end (10.2) that is opposite to the crown (50). - Mechanical oscillator (120) stop device (150), the stop device cooperating with the control lever (10) and configured to lock the balance wheel (121) in the appropriate position according to the user's requirements; Its features are, The stop device (150) includes an elastic member (151) having: a first fixed member (151.1) integrally connected with the watch movement (200) plate or bridge; and a second flexible member (151.2) at least a portion of which is elastically deformable. The second flexible member (151.2) is configured to directly abut against the circumference of the balance wheel (121) rim (122) at the second axial position (T2) of the control lever (10), while maintaining a distance from the balance wheel (121) at the first axial position (T1) of the control lever (10); and the second end (10.2) of the control lever (10) changes the elastic deformation state of the second flexible member (151.2) between the first axial position (T1) and the second axial position (T2) of the control lever (10).

2. The watch movement (200) according to claim 1, characterized in that, The control lever (10) is a winding stem that can rotate along the rotation axis (X). The first axial position (T1) is the winding position of the watch movement (200), and the second axial position (T2) is the time setting position of the watch movement (200).

3. The watch movement (200) according to claim 1 or 2, characterized in that, The second end (10.2) of the control lever (10) is configured to contact the second flexible member (151.2) such that the second flexible member (151.2) is directly deformed by the second end (10.2) of the control lever (10).

4. The watch movement (200) according to claim 1 or 2, characterized in that, The stop device (150) includes a stop rod (156) disposed between the control rod (10) and the elastic member (151), the stop rod (156) directly engaging with the second flexible member (151.2), and the second end (10.2) of the control rod (10) being configured to contact the stop rod (156).

5. The watch movement (200) according to claim 1 or 2, characterized in that, The elastic component (151) is a leaf spring.

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