Timepiece movement

Abstract

The utility model relates to a clock movement which comprises a driving wheel set and an adjusting mechanism, the driving wheel set is kinematically connected to a first display mechanism and a second display mechanism which are used for driving a first display and a second display, and the adjusting mechanism is used for adjusting the positions of the first display and the second display and comprises a sliding gear assembly and a control component. The control member drives the slide gear assembly into a first corrected position when the control member is pushed in a first rotational direction, where the slide gear assembly cooperates with the first display mechanism to modify the position of the first display, and drives the slide gear assembly into a second corrected position when the control member is pushed in a second rotational direction. The control member drives the sliding gear assembly into a second correction position, where the sliding gear assembly cooperates with the second display mechanism to modify the position of the second display, the first display mechanism comprising a ratchet mechanism having a ratchet capable of kinematically connecting the drive wheel set with a display wheel carrying the first display, and interrupting the kinematic connection between the first display mechanism and the drive wheel set.

Description

Technical Field

[0001] The utility model relates to the field of watch manufacturing, in particular to a watch movement comprising a mechanism for adjusting the position of a display. Background Art

[0002] This mechanism for correcting the functions of a watch movement allows the user to modify the position of one of its displays, such as the current time, by operating the control members of the watch.

[0003] When a timepiece movement includes multiple functions, such as date, second time zone, etc., a winding stem is usually used to perform their respective corrections. Specifically, prior art documents describe positioning the winding stem in a specific axial position to select the function to be corrected, and pivoting the stem to correct the selected function.

[0004] Apart from certain functions, axially positioning the winding stem can be particularly tricky. More specifically, it will be appreciated that when more than three different axial positions are available, finding the desired position can become tedious.

[0005] Furthermore, when a corrector mechanism has multiple functions, its implementation is relatively complex, as the winding stem must be kinematically connected to a specific part of the watch movement in each of its axial positions in order to be able to act on a given function. Furthermore, adding specific functions to a watch movement increases its size, as each function usually requires its own drive mechanism. Utility Model Content

[0006] The object of the present invention is to overcome these drawbacks by providing a timepiece movement having multiple functions that can be corrected easily and quickly.

[0007] Another object of the present invention is to simplify the movement to minimize its size.

[0008] To this end, the utility model relates to a timepiece movement comprising a drive wheel set and an adjustment mechanism, the drive wheel set being kinematically connected to a first display mechanism and a second display mechanism, the first display mechanism and the second display mechanism being respectively used to drive a first display and a second display of a time value, the adjustment mechanism being used to adjust the position of the first display and the second display, and the adjustment mechanism comprising a sliding gear assembly and a control member, the control member being adapted to occupy an adjustment position in which the control member engages the sliding gear assembly, and:

[0009] - when the control member is pushed in a first rotational direction, the control member drives the sliding gear assembly to a first correction position in which the sliding gear assembly is able to cooperate with the first display mechanism in order to modify the position of the first display, and

[0010] When the control member is pushed in a second rotational direction, the control member drives the sliding gear assembly to a second correction position in which the sliding gear assembly can cooperate with the second display mechanism in order to modify the position of the second display.

[0011] The first display mechanism comprises a click mechanism having a ratchet wheel capable of kinematically connecting the drive wheel set with a display wheel carrying the first display so as to transmit a rotation of the drive wheel set to the first display, the ratchet wheel being movable in a plane orthogonal to its axis of rotation so as to interrupt the kinematic connection between the first display mechanism and the drive wheel set when the control member is operated to modify the position of the first display.

[0012] The user can thus easily correct the function of the timepiece movement by pivoting in one direction or the other.

[0013] Furthermore, thanks to the ratchet mechanism, the number of components in the watch movement is kept as low as possible.

[0014] In certain embodiments, the present invention may further include one or more of the following features, which must be considered individually or in any technically feasible combination.

[0015] In a particular embodiment, the drive wheel set comprises a first drive wheel located in the same plane as the ratchet wheel and the display wheel.

[0016] In a particular embodiment, the ratchet mechanism comprises a return member integral with the ratchet wheel so as to urge the ratchet wheel towards a stop position in which the ratchet wheel engages with the first drive wheel and the display wheel.

[0017] In a particular embodiment, the return member is arranged in the same plane as the first drive wheel, the ratchet wheel and the display wheel.

[0018] In a specific embodiment, when the sliding gear assembly is in the first correction position, the sliding gear assembly is engaged with the first display mechanism and disengaged from the second display mechanism, and when the sliding gear assembly is in the second correction position, the sliding gear assembly is engaged with the second display mechanism and disengaged from the first display mechanism.

[0019] In a specific embodiment, the sliding gear assembly comprises the following elements arranged coaxially:

[0020] a second drive wheel by means of which the control member is able to rotate the sliding gear assembly,

[0021] a first adjusting wheel kinematically connected to the first display mechanism when the control member is in the adjustment position and is pushed in a first rotational direction, and

[0022] a second adjusting wheel kinematically connected to the second display mechanism when the control member is in the adjustment position and is pushed in the second rotational direction.

[0023] In a particular embodiment, the display wheel is formed by a time zone wheel, and the first display mechanism includes a transmission wheel that kinematically connects the time zone wheel to the first adjustment wheel when the control member is in the adjustment position and is pushed in the first rotational direction. Thus, when the control member is pushed in the first rotational direction, the position of the first display is continuously changed.

[0024] In a specific embodiment, the second adjustment wheel of the sliding gear assembly is formed by a cam, which includes at least one corrector finger-shaped member, and when the sliding gear assembly occupies the second correction position and when the control member is pushed in the second rotational direction, the corrector finger-shaped member is capable of cooperating with the toothed portion of the second display mechanism that is integral with the second display, so as to drive the second display to rotate sequentially during the rotation of the sliding gear assembly.

[0025] In a particular embodiment, the drive wheel set comprises a drive finger capable of cooperating with a toothing of the second display mechanism to drive the second display to rotate sequentially during rotation of the drive wheel set.

[0026] In certain embodiments, the ratchet mechanism includes a guide structure adapted to guide movement of the ratchet when the sliding gear assembly is pushed in the first rotational direction.

[0027] In a specific embodiment, the guide structure is configured such that when the sliding gear assembly is pushed in the first rotational direction, the guide structure guides the ratchet to rotate around an axis passing through the center of the drive wheel set, or guides the ratchet to translate along a straight line trajectory tangent to a circle concentric with the drive wheel set. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features and advantages of the present invention will become apparent from the following detailed description given by way of example and not limitation with reference to the accompanying drawings, in which:

[0029] - Figure 1shows a perspective top view of a portion of a timepiece movement according to a preferred exemplary embodiment of the invention, the timepiece movement comprising a mechanism for adjusting the position of a display of a time value;

[0030] - Figure 2 Shown Figure 1 A perspective bottom view of the movement shown;

[0031] - Figure 3 Shown Figure 1 a perspective view of the movement shown, wherein the position of the first display is modified;

[0032] - Figure 4 Shown Figure 1 A perspective view of the movement shown, in which the position of the second display is modified.

[0033] It should be noted that for the sake of clarity these drawings are not necessarily drawn to scale. DETAILED DESCRIPTION

[0034] The utility model relates to a timepiece movement 10 , which is intended to be accommodated in a watch case and is configured to drive two displays 20 and 30 of time values ​​in addition to displaying the current time.

[0035] In this preferred exemplary embodiment of the present invention, regarding the two time value displays 20 and 30 , the first one is a display of an additional time zone time different from the display of the current time, and the second one is a date display.

[0036] For the sake of clarity, various components of a timepiece movement known to those skilled in the art will not be described herein and do not appear in the drawings.

[0037] Figure 1 and Figure 2 The present invention is shown during normal operation of the timepiece movement 10, ie when the current time, the additional time zone time and the date are displayed. Figure 1 shows a timepiece movement 10 seen from above, Figure 2 Timepiece movement 10 is shown seen from below.

[0038] The timepiece movement 10 includes a drive wheel set 11, which is kinematically connected to the travel train so as to drive the first time value display 20 and the second time value display 30. In this preferred embodiment of the present invention, the drive wheel set 11 is driven by the hour wheel (not shown) of the travel train at a speed of one rotation per day.

[0039] Advantageously, the watch movement 10 includes an adjustment mechanism for adjusting the position of these displays 20 and 30, which adjustment mechanism includes a sliding gear assembly 40 and a control member 50, the control member 50 being intended to be in an adjustment position in response to a user operating the watch, in which adjustment position the control member 50 engages with the sliding gear assembly 40 and is able to drive both the first display 20 and the second display 30 to be displaced.

[0040] Preferably, control member 50 is formed by a winding stem coupled to a winding push-button, and the adjustment position is achieved via a predetermined axial position. The winding stem is configured so that, when control member 50 occupies the adjustment position, it is kinematically connected to sliding gear assembly 40 by means of an intermediate wheel system known to those skilled in the art. This intermediate wheel system is illustrated in the figures but not described in detail herein, as it is well known to those skilled in the art.

[0041] As can be seen from the figure, the sliding gear assembly 40 includes a second drive wheel 41 , and the control member 50 can rotate the sliding gear assembly 40 via the intermediate wheel system by means of the second drive wheel 41 .

[0042] The sliding gear assembly 40 is engaged in a guide rail so that it can rotate freely and translate in a direction orthogonal to the direction in which it can freely pivot. The sliding gear assembly 40 can therefore occupy two extreme positions in the guide rail. For the sake of clarity, the guide rail is not shown in the figures and is formed, for example, by a through-groove made in a supporting structure of the watch movement 10 (such as a bridge or plate). When the control member 50 occupies the adjustment position, it drives the sliding gear assembly 40 into one of these extreme positions, depending on the direction of rotation in which the control member is pushed. In the remainder of this document, these extreme positions are referred to as "correction positions."

[0043] In particular, when the control member 50 is positioned in the adjustment position by the user and pushed in the first rotational direction, the control member 50 is configured to drive the sliding gear assembly 40 into the first correction position, in which the sliding gear assembly 40 is able to cooperate with the first display mechanism 200, thereby modifying the position of the first display 20.

[0044] As can be seen from the figure, the first display mechanism 200 includes a ratchet mechanism 210 configured to allow the drive wheel set 11 to be kinematically connected to the first display mechanism 200 when the control member 50 is not operated, and to interrupt this kinematic connection when the control member 50 is operated.

[0045] More specifically, the ratchet mechanism 210 is equipped with a ratchet 211 that can kinematically connect the drive wheel set 11 with the display wheel 21 carrying the first display 20, thereby transmitting the rotation of the drive wheel set 11 to the first display 20, as shown in FIG. Figure 1 . Furthermore, when control member 50 is pushed in a first rotational direction while in the adjustment position, ratchet wheel 211 is capable of translational movement in a plane orthogonal to its axis of rotation, or rotational movement about the axis of drive wheel set 11, thereby interrupting the kinematic connection between first display mechanism 200 and drive wheel set 11. This feature prevents damage to timepiece movement 10 through the transmission of forces to the gear train and oscillator.

[0046] In this preferred exemplary embodiment of the present invention, the ratchet mechanism 210 is provided with a ratchet 211 that meshes with the first drive wheel 110 of the drive wheel set 11 and with the display wheel 21. The first drive wheel 110, the ratchet 211, and the display wheel 21 are located in the same plane, as shown in the figure, thereby minimizing the thickness of the timepiece movement 10 and reducing the number of components in the timepiece movement.

[0047] Advantageously, the ratchet mechanism 210 may include a return member 212 integral with the ratchet wheel 211 to urge the ratchet wheel 211 to a stop position in which it engages the first drive wheel 110 and the display wheel 21. In the exemplary embodiment shown in the figures, the return member 212 is configured to retain the ratchet wheel 211 in this axial position and is arranged to apply a return force to the spindle of the ratchet wheel 211. Alternatively, the return member 212 may be arranged to rest against the teeth of the ratchet wheel 211 in order to further minimize the thickness of the movement. The return member 212 is thus located in the same plane as the first drive wheel 110, the ratchet wheel 211, and the display wheel 21.

[0048] In summary, the ratchet mechanism 211 is adapted to transmit motion from the first drive wheel 110 to the display wheel 21, and to prevent motion from being transmitted from the display wheel 21 to the first drive wheel 110. The operation of the ratchet mechanism 210 will be described in detail below.

[0049] In this preferred exemplary embodiment of the present invention, the display wheel 21 is constituted by a time zone wheel, and the first display mechanism 200 includes a transmission wheel 22 which kinematically connects the display wheel 21 with the sliding gear assembly 40 when the control member 50 is in the adjustment position and is pushed in the first rotational direction.

[0050] More specifically, if Figure 3As shown in the detailed view on the right, the sliding gear assembly 40 includes a first adjusting wheel 42 which, when the control member 50 is in the adjustment position and is pushed in the first rotational direction, is kinematically connected to the transmission wheel 22. Thus, the transmission wheel 22 drives the display wheel 21 in rotation, thereby moving the time display of the additional time zone. Figure 3 The detailed view on the left shows that during this rotation, display wheel 21 causes ratchet wheel 211 to roll around first drive wheel 110 and disengage from display wheel 21. In particular, as display wheel 21 rotates, its teeth apply a torque to the teeth of ratchet wheel 211, thereby shifting ratchet wheel 211 so that these teeth disengage from one another, i.e., the teeth of ratchet wheel 211 no longer contact those of display wheel 21.

[0051] If the ratchet mechanism 210 includes a return member 212, the torque applied to the teeth of the ratchet wheel 211 will resist the return force applied by the return member 212 to the ratchet wheel 211. Therefore, in the stopped position, after the teeth of the ratchet wheel 211 are disengaged from the teeth of the display wheel 21, the ratchet wheel 211 will be immediately returned to contact with the display wheel 21.

[0052] Therefore, in this exemplary embodiment of the present invention shown in the drawings, when the display wheel 21 rotates, the ratchet wheel 211 rolls on the first driving wheel 110 like a planetary wheel, thereby moving back and forth.

[0053] Alternatively or additionally, the ratchet 211 can be engaged in a guide in a manner similar to the sliding gear assembly 40 so as to guide the ratchet 211 during displacement when the sliding gear assembly 40 is pushed in the first rotational direction. For example, the guide structure can be configured to guide the ratchet 211 to rotate about an axis passing through the center of the drive wheel set 11, or to guide the ratchet 211 to translate along a linear trajectory tangential to a circle concentric with the drive wheel set 11.

[0054] like Figure 4 As shown, when the control member 50 occupies the adjustment position and is pushed along the second rotational direction, the control member 50 is configured to drive the sliding gear assembly 40 into the second correction position, in which the sliding gear assembly 40 can modify the position of the second display 30 by means of the second display mechanism 300.

[0055] It should be noted that when in the first position, the sliding gear assembly 40 is engaged with the display wheel 21 as described above and is disengaged from the second display mechanism 300 as described above. Figure 3 In contrast, when in the second position, the sliding gear assembly 40 engages with the second display mechanism 300 and disengages from the display wheel 21, as shown. Figure 4 shown.

[0056] The sliding gear assembly 40 includes a second adjusting wheel 43, by means of which the sliding gear assembly 40 can be kinematically connected to the second display mechanism 300. The second adjusting wheel 43 is composed of a cam having at least one corrector finger, for example three corrector fingers, as shown in the figure. The second drive wheel 41 is arranged coaxially with the first adjusting wheel 42 and the second adjusting wheel 43.

[0057] In particular, in this preferred exemplary embodiment of the present invention, as Figure 4 As shown in the detailed view of FIG, the second display mechanism 300 includes a toothed portion 301 coupled to the second display 30, here formed by a date disc. When the sliding gear assembly 40 is in the second correction position, the corrector finger can engage the toothed portion 301, thereby driving the second display 30 to rotate sequentially during the rotation of the sliding gear assembly 40, utilizing the graduated positioning of the jumper spring 213 arranged below the return member 212.

[0058] In this preferred exemplary embodiment of the present invention, the driving wheel set 11 includes a driving finger 111, which is capable of cooperating with the tooth portion 301 of the second display mechanism 300 to drive the second display 30 to rotate sequentially one step when the driving wheel set 11 rotates one circle. Figure 1 shown.

[0059] The drive finger 111 may include Figure 2 , which is well known to those skilled in the art, allows said drive finger 111 to be retracted so as not to transmit any rotational movement to drive wheel set 11 when second display 30 is driven by sliding gear assembly 40, thereby not disturbing the time zone display.

[0060] More generally, it should be noted that the embodiments and examples considered above are described as non-limiting examples, and other alternatives are therefore possible.

Claims

1. A watch movement (10), characterized in that: The timepiece movement (10) comprises a drive wheel set (11) and an adjustment mechanism, the drive wheel set (11) being kinematically connected to a first display mechanism (200) and a second display mechanism (300), the first display mechanism (200) and the second display mechanism (300) being respectively used to drive a first display (20) and a second display (30) of a time value, the adjustment mechanism being used to adjust the position of the first display (20) and the second display (30), and the adjustment mechanism comprising a sliding gear assembly (40) and a control member (50), the control member (50) being adapted to occupy an adjustment position in which the control member (50) engages with the sliding gear assembly (40), and: - when the control member (50) is pushed in a first rotational direction, the control member (50) drives the sliding gear assembly (40) into a first correction position, in which the sliding gear assembly is able to cooperate with the first display mechanism (200) so as to modify the position of the first display (20), and - when the control member (50) is pushed in the second rotational direction, the control member (50) drives the sliding gear assembly (40) into a second correction position, in which the sliding gear assembly is able to cooperate with the second display mechanism (300) so as to modify the position of the second display (30), The first display mechanism (200) comprises a ratchet mechanism (210) having a ratchet wheel (211) capable of kinematically connecting the drive wheel set (11) with a display wheel (21) carrying the first display (20) so as to transmit the rotation of the drive wheel set (11) to the first display (20), and when the control member (50) is operated to modify the position of the first display (20), the ratchet wheel (211) is capable of moving in a plane orthogonal to the axis of rotation of the ratchet wheel (211) so as to interrupt the kinematic connection between the first display mechanism (200) and the drive wheel set (11).

2. The watch movement (10) according to claim 1, characterized in that The driving wheel set (11) comprises a first driving wheel (110), wherein the first driving wheel (110), the ratchet wheel (211) and the display wheel (21) are located in the same plane.

3. The watch movement (10) according to claim 2, characterized in that The ratchet mechanism (210) includes a return member (212) integral with the ratchet (211) so as to push the ratchet (211) to a stop position in which the ratchet (211) engages with the first drive wheel (110) and the display wheel (21).

4. The watch movement (10) according to claim 3, characterized in that The return member (212) is arranged in the same plane as the first drive wheel (110), the ratchet wheel (211) and the display wheel (21).

5. The watch movement (10) according to any one of claims 1 to 4, characterized in that The sliding gear assembly (40) is engaged with the first display mechanism (200) and disengaged from the second display mechanism (300) when in the first correction position, and the sliding gear assembly (40) is engaged with the second display mechanism (300) and disengaged from the first display mechanism (200) when in the second correction position.

6. The watch movement (10) according to any one of claims 1 to 4, characterized in that The sliding gear assembly (40) comprises the following elements arranged coaxially: a second drive wheel (41) by means of which the control member (50) is able to rotate the sliding gear assembly (40), a first adjusting wheel (42) kinematically connected to the first display mechanism (200) when the control member (50) is in the adjusting position and is pushed in the first rotational direction, and - a second adjusting wheel (43) kinematically connected to the second display mechanism (300) when the control member (50) is in the adjusting position and is pushed in the second rotational direction.

7. The watch movement (10) according to claim 6, characterized in that The display wheel (21) is formed by a time zone wheel, and the first display mechanism (200) comprises a transmission wheel (22) which kinematically connects the time zone wheel with the first adjusting wheel (42) when the control member (50) is in the adjustment position and is pushed in the first rotational direction.

8. The watch movement (10) according to claim 6, characterized in that The second adjustment wheel (43) of the sliding gear assembly (40) is formed by a cam, which includes at least one corrector finger. When the sliding gear assembly (40) occupies the second correction position and when the control member (50) is pushed in the second rotation direction, the corrector finger is capable of cooperating with a tooth portion (301) of the second display mechanism (300) that is integral with the second display (30) so as to drive the second display (30) to rotate sequentially during the rotation of the sliding gear assembly (40).

9. The watch movement (10) according to any one of claims 1 to 4, characterized in that The drive wheel set (11) includes a drive finger (111) capable of cooperating with a tooth portion (301) of the second display mechanism (300) to drive the second display (30) to rotate during rotation of the drive wheel set (11).

10. The watch movement (10) according to claim 9, characterized in that The second display (30) is formed by a date disc and is driven to rotate sequentially during the rotation of the drive wheel set (11).

11. The timepiece movement (10) according to any one of claims 1 to 4, characterized in that The ratchet mechanism (210) includes a guide structure adapted to guide the movement of the ratchet (211) when the sliding gear assembly (40) is pushed along the first rotation direction.

12. The watch movement (10) according to claim 11, characterized in that The guide structure is configured such that, when the sliding gear assembly (40) is pushed in the first rotation direction, the guide structure guides the ratchet (211) to rotate around an axis passing through the center of the drive wheel set (11), or guides the ratchet (211) to translate along a straight line path tangent to a circle concentric with the drive wheel set (11).

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