CLOCKWORK THAT INCLUDES A MECHANISM FOR ADJUSTING THE POSITION OF DISPLAYS

Description

Technical field of the invention

[0001] The invention falls within the field of watchmaking and relates in particular to a watch movement comprising a mechanism for adjusting the position of displays. Technological background

[0002] The correction mechanisms of a function of a watch movement allow a user, by manipulating a control organ of the watch, to change the position of one of its displays, for example the current time.

[0003] When a watch movement has several functions, such as a date display, a second time zone, etc., their respective correction is generally achieved using the winding stem. Specifically, it is known to position the winding stem in a particular axial position to select the function to be corrected, and then rotate the stem to correct the selected function, as illustrated in documents CH541170A, EP3602202B1, and EP0173230A1, for example.

[0004] Beyond a certain number of functions, axially positioning the winding stem can be particularly tricky. Indeed, it's easy to see that beyond three distinct axial positions available, finding the desired position becomes tedious.

[0005] Furthermore, when it has multiple functions, the correction mechanism is relatively complex to implement since, in each of its axial positions, the winding stem must be kinematically linked to specific components of the watch movement in order to act on a given function. In addition, adding special functions to a watch movement increases its size, as each function generally has its own drive mechanism. Summary of the invention

[0006] The present invention aims to resolve these drawbacks by proposing a watch movement with several functions that can be easily and quickly corrected.

[0007] Another objective of the present invention is to simplify the movement in order to minimize its dimensions.

[0008] The invention relates to this purpose, a clockwork movement comprising a moving part kinematically linked to a first and a second display mechanism respectively intended to drive a first and a second display of a time value, a mechanism for adjusting the position of these displays comprising a sliding arm and a control member adapted to assume an adjustment position in which it is engaged with the sliding arm and in which: When it is moved in a first direction of rotation, it moves the slider into a first correction position in which the latter is able to cooperate with the first display mechanism so as to modify the position of the first display, and when it is moved in a second direction of rotation, it moves the slider into a second correction position in which the latter is able to cooperate with the second display mechanism so as to modify the position of the second display.

[0009] The first display mechanism includes a ratchet mechanism with a ratchet wheel capable of kinematically linking the driving mobile and a display wheel carrying the first display so as to transmit the rotation of the driving mobile to the first display, said ratchet wheel being movable in a plane orthogonal to its axis of rotation when the control member is requested to change the position of the first display, so as to interrupt the kinematic link between the first display mechanism and the driving mobile.

[0010] Thus, the user can simply correct a function of the watch movement by pivoting in one direction or the other.

[0011] Furthermore, thanks to the ratchet mechanism, the number of components in the watch movement is minimized.

[0012] In particular embodiments, the invention may further include one or more of the following features.

[0013] In particular embodiments, the driving mobile includes a driving wheel with which the ratchet wheel and the display wheel are inscribed in the same plane.

[0014] In particular embodiments, the ratchet mechanism includes a return member integral with the ratchet wheel so as to constrain it towards a stop position in which it is engaged with the driving wheel and with the display wheel.

[0015] In particular embodiments, the return element is arranged in the same plane as the drive wheel, the ratchet wheel and the display wheel.

[0016] In particular embodiments, when it occupies the first position, the player is engaged with the first display mechanism and is disengaged from the second display mechanism, and when it occupies the second position, the player is engaged with the second display mechanism and is disengaged from the first display mechanism.

[0017] In certain embodiments, the portable player comprises, arranged coaxially: a drive wheel by which it is able to be driven in rotation by the control member, a first adjusting wheel kinematically connected with the first display mechanism when the control member is in the adjusting position and is stressed in the first direction of rotation, and a second adjusting wheel kinematically connected with the second display mechanism when the control member is in the adjusting position and is stressed in the second direction of rotation.

[0018] In certain embodiments, the display wheel is formed by a time zone wheel, the first display mechanism comprising a transmission wheel kinematically linking the time zone wheel and the first adjustment wheel when the control element is in the adjustment position and is actuated in the first direction of rotation. The position of the first display is therefore changed continuously when the control element is actuated in the first direction of rotation.

[0019] In particular embodiments, the second wheel of the slider consists of a cam having at least one corrector finger capable of cooperating with a tooth of the second display mechanism attached to the second display so as to drive said second display in a sequential rotation during the rotation of said slider when it occupies the second correction position and the control member is stressed in the second direction of rotation.

[0020] In particular embodiments, the driving mobile includes a drive finger adapted to cooperate with the teeth of the second display mechanism to drive the second display in a sequential rotation during the rotation of said driving mobile.

[0021] In particular embodiments, the ratchet mechanism includes a guide structure adapted to guide the ratchet wheel in motion when the sliding part is stressed in the first direction of rotation.

[0022] In particular embodiments, the guide structure is configured to guide the ratchet wheel in rotation around an axis passing through the center of the driving mobile or in translation along a straight path tangential to a circle concentric to the driving mobile, when the slider is stressed in the first direction of rotation. Brief description of the figures

[0023] Other features and advantages of the invention will become apparent from the following detailed description, given by way of non-limiting example, with reference to the accompanying drawings in which: there figure 1represents a top perspective view of a portion of a clockwork movement comprising a mechanism for adjusting the position of time displayers, according to a preferred embodiment of the invention; the figure 2 represents a perspective view from below of the movement of the figure 1 ; there figure 3 represents a perspective view of the movement of the figure 1 , in which the position of a first display is modified; the figure 4 represents a perspective view of the movement of the figure 1 , in which the position of a second display is modified.

[0024] Note that the figures are not necessarily drawn to scale for reasons of clarity. Detailed description of the invention

[0025] The invention relates to a watch movement 10 intended to be housed in a watch case, and configured to drive two time value displays 20 and 30 in addition to a current time display.

[0026] In the preferred embodiment of the present invention, among these two time value displays 20 and 30, the first is a time display for an additional time zone to that of the current time, and the second is a date display.

[0027] For the sake of clarity, the components of the watch movement known to a person skilled in the art are not described in this text and do not appear in the figures.

[0028] THE figures 1 and 2 represent the present invention during the normal operation of the clock movement 10, that is, during the display of the current time, the time in an additional time zone, and the date. In particular, the figure 1represents the clockwork movement 10 top view and the figure 2 represents the watch movement 10 seen from below.

[0029] The clockwork mechanism 10 comprises a driving wheel 11 kinematically linked to a timing gear in order to drive the first and second displays 20 and 30 with a time value. In the preferred embodiment of the invention, the driving wheel 11 is driven by one revolution per day by an hour wheel of the timing gear (not shown in the figures).

[0030] The watch movement 10 advantageously includes a mechanism for adjusting the position of these displays 20 and 30, comprising a slider 40 and a control element 50 designed to take an adjustment position in which it is engaged with the slider 40 and is able to drive either of the first and second displays 20 and 30 in movement, following a request from a user of the watch.

[0031] Preferably, the control member 50 consists of a winding stem connected to a winding crown, and the setting position is defined by a predetermined axial position. The winding stem is configured to be kinematically linked to the slider 40 via a linkage system known to those skilled in the art, when the control member 50 is in the setting position. Such a linkage system is shown in the figures but is not described in detail in the text as it is well known to those skilled in the art.

[0032] As shown in the figures, the slider 40 has a drive wheel 41 by which it is able to be driven in rotation by the control member 50, via the linkage system.

[0033] The slider 40 is freely rotated and translated within a guide track along a direction orthogonal to the direction in which it is free to pivot. Thus, the slider 40 is capable of occupying two extreme positions within the guide track. For clarity, the guide track is not shown in the figures and is formed, for example, by a through-groove in a support structure for the watch movement 10, such as a bridge or a mainplate. The slider 40 is driven into one of these extreme positions by the control member 50 when it is in the setting position, depending on the direction of rotation in which the latter is actuated. These extreme positions are referred to as "correction positions" in the following text.

[0034] In particular, when positioned in the adjustment position by a user and is moved in a first direction of rotation, the control element 50 is configured to drive the slider 40 into a first correction position in which the latter is able to cooperate with the first display mechanism 200 so as to change the position of the first display 20.

[0035] As can be seen in the figures, the first display mechanism 200 includes a ratchet mechanism 210 configured to allow the kinematic link between the driving mobile 11 and said first display mechanism 200 when the control member 50 is not activated, and to interrupt this kinematic link when the control member 50 is activated.

[0036] More specifically, the ratchet mechanism 210 is equipped with a ratchet wheel 211 capable of kinematically linking the driving wheel 11 and a display wheel 21 carrying the first display 20 so as to transmit the rotation of the driving wheel 11 to the first display 20, as illustrated by the arrows on the figure 1 Furthermore, the ratchet wheel 211 is movable in translation in a plane orthogonal to its axis of rotation or in rotation around the axis of the driving wheel 11, when the control member 50 is stressed in the first direction of rotation when it is in the setting position, so as to interrupt the kinematic link between the first display mechanism 200 and the driving wheel 11. This feature makes it possible to avoid damaging the watch movement 10 by transmitting forces to the finishing gear and the oscillator.

[0037] In the preferred embodiment of the invention, the ratchet mechanism 210 has a ratchet wheel 211 meshing with a driving wheel 110 of the driving wheel 11 and with the display wheel 21. The driving wheel 110, the ratchet wheel 211 and the display wheel 21 are inscribed in the same plane, as can be seen in the figures, so as to minimize the thickness of the watch movement 10, while allowing a reduction in the number of components of the watch movement.

[0038] Advantageously, the ratchet mechanism 210 can include a return member 212 integral with the ratchet wheel 211 so as to constrain it to a stop position in which it meshes with the drive wheel 110 and with the display wheel 21. In the embodiment shown in the figures, the return member 212 is configured to maintain the axial position of the ratchet wheel 211 and is arranged to apply a return force on an axis of the ratchet wheel 211. Alternatively, the return member 212 can be arranged bearing against the teeth of the ratchet wheel 211 to further minimize the thickness of the movement. The return member 212 is then located in the same plane as the drive wheel 110, the ratchet wheel 211, and the display wheel 21.

[0039] In summary, the ratchet wheel 211 is adapted to transmit movement from the driving wheel 110 to the display wheel 21 and to prevent the transmission of movement from the display wheel 21 to the driving wheel 110. The operation of the ratchet mechanism 210 is described in detail later in the text.

[0040] In the preferred embodiment of the invention, the display wheel 21 is formed by a time zone wheel. The first display mechanism 200 includes a transmission wheel 22 kinematically linking the display wheel 21 and the slider 40 when the control member 50 is in the adjustment position and is actuated in the first direction of rotation.

[0041] More specifically, as seen in the detail view on the right of the figure 3The slider 40 includes a first adjustment wheel 42 kinematically connected to the transmission wheel 22 when the control member 50 is in the adjustment position and is actuated in the first direction of rotation. The transmission wheel 22 then drives the display wheel 21 in rotation, which moves the time display by one additional time zone. The detail view on the left of the figure 3 shows that, during this rotation, the display wheel 21 causes the ratchet wheel 211 to roll around the driving wheel 110 and to disengage from the display wheel 21. In particular, during the rotation of the display wheel 21, the teeth of the latter exert a torque on the teeth of the ratchet wheel 211 moving the ratchet wheel 211 so as to disengage the said teeth from each other, that is to say that the teeth of the ratchet wheel 211 are no longer in contact with those of the display wheel 21.

[0042] If the ratchet mechanism 210 includes a return member 212, the torque exerted on the teeth of the ratchet wheel 211 opposes the return force exerted by the return member 212 on said ratchet wheel 211. The ratchet wheel 211 is therefore immediately brought back into contact with the display wheel 21, in the stop position, following the disengagement of the teeth of the ratchet wheel 211 and the display wheel 21.

[0043] In the example of an embodiment of the invention shown in the figures, the ratchet wheel 211 therefore rolls, in the manner of a satellite, on the driving wheel 110 during the rotation of the display wheel 21 by moving in a back-and-forth motion.

[0044] Alternatively or in addition, the ratchet wheel 211 can be engaged in a guide track, similarly to the sliding sleeve 40, so as to guide the ratchet wheel 211 in motion when the sliding sleeve 40 is actuated in the first direction of rotation. For example, the guide structure can be configured to guide the ratchet wheel 211 in rotation about an axis passing through the center of the driving slide 11 or in translation along a straight path tangential to a circle concentric with the driving slide 11.

[0045] As illustrated on the figure 4 , when it occupies the adjustment position and is moved in a second direction of rotation, the control member 50 is configured to drive the slider 40 into a second correction position in which the latter is able to modify the position of the second display 30 by means of a second display mechanism 300.

[0046] It should be noted that, when it occupies the first position, the slider 40 is engaged with the display wheel 21, as described previously, and is detached from the second display mechanism 300, as shown on the figure 3 Conversely, when it occupies the second position, the slider 40 is engaged with the second display mechanism 300 and is detached from the display wheel 21, as shown in the figure 4 .

[0047] The slider 40 includes a second adjustment wheel 43 by which it can be kinematically linked to the second display mechanism 300. This second adjustment wheel 43 consists of a cam having at least one corrector finger, for example three, as shown in the figures. The drive wheel 41 and the first and second adjustment wheels 42 and 43 are arranged coaxially.

[0048] In particular, in the preferred embodiment of the present invention, and as seen in the detail view of the figure 4 The second display mechanism 300 comprises a toothed section 301 linked to the second display 30, which is in this case a date disc. The corrector finger is able to cooperate with the toothed section 301 so as to drive the second display 30 in a sequential rotation during the rotation of the slider 40, thanks to the indexing provided by a jumper spring 213 located under the return member 212, when the slider 40 is in the second correction position.

[0049] In the preferred embodiment of the invention, the driving element 11 comprises a drive finger 111 adapted to cooperate with the teeth 301 of the second display mechanism 300 to drive the second display 30 in a sequential rotation of one step, at each revolution performed by said driving element 11, as visible in the figure 1 .

[0050] This 111 training finger may include a safety system, as shown in detail on the figure 2 , well known to the man of the trade and allowing said drive finger 111 to retract so as not to transmit rotational movement to the leading mobile 11 when the second display 30 is driven by the slider 40, so as not to misadjust the time zone display.

[0051] More generally, it should be noted that the implementation and realization methods considered above have been described as non-limiting examples, and that other variants are therefore conceivable.

Claims

1. Horological movement (10) comprising a driving wheel set (11) kinematically linked to a first and to a second display mechanism (200, 300) respectively intended to drive a first and a second display (20, 30) of a time value, a mechanism for adjusting the position of these displays (20, 30) including a sliding-gear assembly (40) and a control member (50) adapted to assume an adjusting position in which it is engaged with the sliding-gear assembly (40) and in which: - when urged in a first direction of rotation, it 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 urged in a second direction of rotation, it 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), characterised in that the first display mechanism (200) includes a click mechanism (210) having a click wheel (211) capable of kinematically linking the driving wheel set (11) and a display wheel (21) carrying the first display (20) so as to transmit the rotation of the driving wheel set (11) to the first display (20), said click wheel (211) being movable in a plane orthogonal to its axis of rotation when the control member (50) is operated to modify the position of the first display (20), so as to interrupt the kinematic link between the first display mechanism (200) and the driving wheel set (11).

2. Horological movement (10) according to claim 1, wherein the driving wheel set (11) includes a driving wheel (110) which lies in the same plane as the click wheel (211) and the display wheel (21).

3. Horological movement (10) according to claim 2, wherein the click mechanism (210) comprises a return member (212) integral with the click wheel (211) so as to force it towards a stop position in which it is engaged with the driving wheel (110) and with the display wheel (21).

4. Horological movement (10) according to claim 3, wherein the return member (212) is arranged in the same plane as the driving wheel (110), the click wheel (211) and the display wheel (21).

5. Horological movement (10) according to one of claims 1 to 4, wherein, when in the first position, the sliding-gear assembly (40) is engaged with the first display mechanism (200) and disengaged from the second display mechanism (300), and when in the second position, the sliding-gear assembly (40) is engaged with the second display mechanism (300) and disengaged from the first display mechanism (200).

6. Horological movement (10) according to one of claims 1 to 5, wherein the sliding-gear assembly (40) includes the following elements, arranged coaxially: - a driving wheel (41) by means of which it can be rotated by the control member (50), - 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 urged in the first direction of rotation, 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 urged in the second direction of rotation.

7. Horological movement (10) according to claim 6, wherein the display wheel (21) is formed by a time zone wheel, the first display mechanism (200) comprising a transmission wheel (22) kinematically connecting the time zone wheel and the first adjusting wheel (42) when the control member (50) is in the adjusting position and is urged in the first direction of rotation.

8. Horological movement (10) according to one of claims 1 to 7, wherein the second adjusting wheel (43) of the sliding-gear assembly (40) is formed by a cam including at least one corrector finger-piece able to cooperate with a toothing (301) of the second display mechanism (300) integral with the second display (30) so as to drive said second display (30) in sequential rotation during the rotation of said sliding-gear assembly (40) when it occupies the second correction position and when the control member (50) is urged in the second direction of rotation.

9. Horological movement (10) according to one of claims 1 to 8, wherein the driving wheel set (11) comprises a driving finger-piece (111) able to cooperate with the toothing (301) of the second display mechanism (300) to drive the second display (30) in rotation during the rotation of said driving wheel set (11).

10. Horological movement (10) according to claim 9, wherein the second display (30) is formed by a date disc and is driven in sequential rotation during the rotation of said driving wheel set (11).

11. Horological movement (10) according to one of claims 1 to 10, wherein the click mechanism (210) includes a guide structure adapted to movably guide the click wheel (211) when the sliding-gear assembly (40) is urged in the first direction of rotation.

12. Horological movement (10) according to claim 11, wherein the guide structure is configured to guide the click wheel (211) rotatably about an axis passing through the centre of the driving wheel set (11) or translatably along a rectilinear trajectory tangential to a circle concentric with the driving wheel set (11), when the sliding-gear assembly (40) is urged in the first direction of rotation.