Quick correction device with lever for timepiece movement

Abstract

The invention relates to a correction device (1) for an indication provided by a display mechanism in a watch movement equipped with a display mechanism comprising an indicator wheel (2), actuation of the indicator wheel (2) allowing the displayed indication to be modified. The correction device (1) comprises a correcting member (3) movable between two positions about a rotating pivot (12), a rest position and a correction position, the correcting member (3) being configured to rotate the indicator wheel (2) when the correcting member (3) is in the correction position, and a rotatable lever (5) comprising a first end (23) configured to bear against the correcting member (3) to move it from the rest position to the correction position. The invention also relates to a watch movement comprising such a correction device (1).

Description

Scope of the invention

[0001] The invention relates to a quick lever correction device for a watch movement comprising a display mechanism.

[0002] The invention also relates to a clockwork movement comprising such a correction device.

[0003] The invention relates to the field of watchmaking, and more particularly to watch parts comprising a display mechanism. Background of the invention

[0004] This invention relates to watches that require a rapid correction device (date, day, month, or other) for certain functions, particularly display functions such as a calendar (simple, annual, perpetual, day / date, or other), or indicators for moon phase, tide, AM / PM display, or others. A specific example of an annual calendar mechanism is described in patent EP1666991 B1 filed by ETA SA.

[0005] To correct the date without a quick-set mechanism via the winding stem or pusher integrated into the watch case, the user must perform the correction using the date mechanism itself. In the worst-case scenario, this can be a lengthy and tedious process. A correction of up to thirty days may be required. Similarly, if the user makes a mistake during the correction, the procedure must be repeated. Performing the correction using the date drive mechanism could lead to excessive use and potentially cause malfunctions.

[0006] To actuate an indicator wheel, correction devices often incorporate rocker arms, which are essential components in watchmaking mechanisms. These rocker arms allow a mechanism to be switched between several different modes, generally between two distinct positions. One of these positions drives the rotation of the indicator wheel. A watch rocker arm is often accompanied by a return spring to ensure correct transmission of movement, or positioning, as the case may be.

[0007] Generally, the correction device consists of a gear train made up of one or more components, and is operated from the winding stem.

[0008] However, such a correction device takes up space in the movement and often requires many components, especially when the indicator wheel is far from the winding stem.

[0009] A known alternative is to use pushers integrated into the watch case. However, this alternative is often relatively expensive and can be a source of problems with the watch case's water resistance. Summary of the invention

[0010] The present invention aims to resolve the aforementioned drawbacks of the prior art, and aims to allow the user to quickly correct a display mechanism, and more particularly a date mechanism.

[0011] To this end, the invention relates to a device for correcting an indication provided by a display mechanism for a watch movement equipped with a display mechanism including an indicator wheel, the actuation of the indicator wheel allowing the display indication to be modified.

[0012] The correction device is remarkable in that it further comprises a correcting member between two positions, a rest position and a correction position, the correcting member being configured to rotate the indicator wheel when the correcting member is in the correction position, and a rotating movable lever comprising a first end configured to come against the correcting member to move it from the rest position to the correction position.

[0013] Thus, a correcting element can be placed near the indicator wheel and actuated remotely using the lever. Thanks to the invention, the correcting device has a reduced footprint and is easier to integrate into a watch movement, this system allowing the correction function to be deployed over a greater distance.

[0014] According to a particular embodiment of the invention, the correction device includes a cam-driven mobile adapted to cooperate with the lever to actuate the correcting member, when the cam-driven mobile is actuated.

[0015] According to a particular embodiment of the invention, the lever comprises a second end having two arms, an actuating arm having an actuating beak and a pivoting arm allowing the lever to pivot when it is actuated.

[0016] According to a particular embodiment of the invention, the two arms delimit at least in part a space between them.

[0017] According to a particular embodiment of the invention, the two arms are curved around said space.

[0018] According to a particular mode of the invention, the cam-operated mobile is arranged in space.

[0019] According to a particular embodiment of the invention, the two arms are monobloc, preferably the lever being monobloc.

[0020] According to a particular embodiment of the invention, the cam-driven mobile is provided with teeth configured to push the actuating beak of the lever actuating arm.

[0021] According to a particular embodiment of the invention, the correction device comprises a winding stem configured to actuate the cam-driven mobile, and thus the lever.

[0022] According to a particular embodiment of the invention, the correcting element comprises a jumper arm configured to position the indicator wheel and prevent it from rotating in case of shock, when the correcting element is in the rest position.

[0023] According to a particular embodiment of the invention, the correcting member comprises a correction arm configured to push the indicator wheel when the correcting member is in the correction position.

[0024] According to a particular embodiment of the invention, the jumper arm and the correction arm are at least partly arranged on either side of the indicator wheel.

[0025] According to a particular embodiment of the invention, the jump arm and the correction arm are arranged to form together substantially a U.

[0026] According to a particular embodiment of the invention, the jump arm and the correction arm are one piece.

[0027] According to a particular embodiment of the invention, the correction arm is arranged between the indicator wheel and the lever.

[0028] According to a particular embodiment of the invention, the correction device comprises a spring exerting a restoring force on the correcting member to return the correcting member from the correction position to the rest position.

[0029] According to a particular embodiment of the invention, the correction device extends substantially in the same plane.

[0030] According to a particular embodiment of the invention, the display mechanism is a moon phase display or a date display or a day display or a month display or a tide display or a time zone display.

[0031] The invention also relates to a clockwork movement comprising such a correction device. Brief description of the drawings

[0032] Other features and advantages of the invention will become apparent upon reading the detailed description that follows, with reference to the attached drawings, where: there figure 1 represents, in schematic form, a perspective view of one embodiment of a correction device according to the invention, the figure 2 represents, in schematic form, a bottom view of the correction device of the figure 1 , there figure 3 represents schematically a top view of the correction device of the figure 1, when the corrective organ is in the rest position, the figure 4 represents schematically a top view of the correction device of the figure 1 , when the correcting element is in the correcting position able to cooperate with the indicator wheel, and the figure 5 represents a part of a clockwork movement comprising the correction device. Detailed description of preferred embodiments

[0033] The invention relates to the field of watchmaking mechanisms, and more particularly to movement control and transmission mechanisms. It finds a preferential application in the correction and updating of display mechanisms in a watch movement of a timepiece.

[0034] The invention relates more particularly to a correction device 1 for an indication provided by a display mechanism of a clockwork movement. Preferably, the correction device 1 extends substantially in the same plane.

[0035] On the figures 1 to 5 The display mechanism includes an indicator wheel 2 with a barrel 19. A pointer, not shown in the figures, is mounted on the barrel 19 for display purposes. The indicator wheel 2 has peripheral teeth 17 for rotating the indicator wheel 2.

[0036] The indicator wheel 2 is mechanically linked to the needle; turning the indicator wheel 2 changes the displayed reading. Preferably, the change is made incrementally. Thus, for each one-notch rotation of the wheel, the reading is changed by one unit.

[0037] According to the invention, the correction device 1 comprises a correcting member 3 that rotates between two positions around a pivot 12. In its rest position, the correcting member 3 positions the indicator wheel 2 and prevents it from rotating in the event of shocks. In its correction position, the correcting member 3 cooperates with the indicator wheel 2 by contacting the teeth 17 to rotate it. When moving from the rest position to the correction position, the correcting member 3 rotates the indicator wheel 2 by one step.

[0038] The correcting member 3 includes a correction arm 8 configured to actuate step-by-step the indicator wheel 2 when the correcting member 3 is in the correction position, and a jumper arm 7 configured to position and prevent the indicator wheel 2 from rotating, when the correcting member 3 is in the rest position.

[0039] The jumper arm 7 and the correction arm 8 are at least partially arranged on either side of the indicator wheel 2. For example, the jumper arm 7 and the correction arm 8 are arranged to form together substantially a U. Thus, when the correcting member 3 moves, the correction arm 8 comes into contact with the indicator wheel 2. Preferably, the jumper arm 7 and the correction arm 8 are one piece.

[0040] The corrective element 3 here comprises an elongated body 10, having two ends and is provided with at least one stud 14 on its upper face. Preferably, the corrective element 3 extends in the same plane.

[0041] The correcting member 3 includes a pivot hole 12. The hole 12 is located at the first end of the correcting member 3. The pivot is formed, for example, by a pin, a stud, or a screw with a bearing surface.

[0042] The correction arm 8 and the jump arm 7 are arranged at the second end of the correction organ 3.

[0043] The jump arm 7 includes a jump beak 18 configured to fit into the teeth 17 of the indicator wheel 2 to position it and prevent it from rotating.

[0044] The correction arm 3 includes an actuating beak 16 capable of inserting itself into the teeth 17 of the indicator wheel 2 to rotate it step by step.

[0045] When the correcting element 3 moves from its rest position to its correcting position, it undergoes a substantially rotational movement. Thus, the correcting beak 16 of the correcting arm 8 pushes a tooth of the gear 17, and rotates the indicator wheel 2.

[0046] To move the correcting member 3 from the rest position to the correction position, the correction device 1 further includes a movable, rotationally configured lever 5 to actuate the correcting member 3 to move it from the rest position to the correction position.

[0047] The lever 5 has an elongated shape, preferably curved, comprising a main branch 28 provided with a first end 23, forming the correction face of the lever 5, which is able to cooperate with the correcting member 3.

[0048] Lever 5 is flat and extends substantially in a plane. Lever 5 is positioned on the side of the correction arm 8 so as to bring the correction arm 8 closer to the indicator wheel 2.

[0049] The lever 5 comprises a second end with two arms 11, 15, preferably elongated. One actuating arm 11 has an actuating beak 22 adapted to cooperate with a cam-operated moving part 4, and one pivoting arm 15 has a hole 13 for a pivot around which the lever 5 can rotate. The pivot is, for example, formed by a pin, a stud, or a screw. The two arms 11, 15 are one-piece, the lever 5 preferably being entirely one-piece.

[0050] The two arms 11, 15 of the lever 5 are curved, preferably concentrically, and partially define a space 25, in which the cam-operated mechanism 4 is arranged. In the figures, the two arms 11, 15 form approximately two-thirds of the circumference of the space 25.

[0051] A lever pad 26 is arranged on the correcting member 3, close to the pivot point 12. When the lever 5 is actuated, the correction face 23 of the lever 5 lifts the lever pad 26 to move the correcting member 3 from the rest position to the correction position.

[0052] The correction device 1 includes a cam-driven element 4, rotatably mounted to cooperate with the lever 5, so as to push it towards the correcting element 3 when the cam-driven element 4 is actuated. The cam-driven element 4 has teeth 21 configured to engage with the actuating beak 22 of the actuating arm 11 of the lever 5.

[0053] Thus, when the correction device 1 is to be used, the cam-driven mechanism 4 is actuated. The cam-driven mechanism 4 is actuated by an actuation system, such as the first mechanism (not shown in the figures), which may include gears and sliding sleeves. For example, the correction device includes a winding stem (not shown in the figures) arranged to actuate the cam-driven mechanism 4.

[0054] The correction device 1 further includes a spring 6 exerting a restoring force on the correcting member 3, to return the correcting member 3 from the correcting position to the rest position. The spring 6 includes a curved flexible blade 27 connected at one end to a heel 9, and bears against the inner side of the stud 14 of the correcting member 3, in order to push the correcting member 3 back to the rest position. The heel 9 includes mounting holes 24 for attaching the heel 9 to the movement, in particular for one or more pins and / or one or more screws.

[0055] Thus, when the cam-driven mobile 4 is no longer actuated, the spring 6 pushes the correcting member 3 from the correction position to the rest position, the correcting member 3 itself pushing the lever 5 back into its initial position.

[0056] The correction device 1 is, for example, integrated into a watch movement 10, for example to correct a display such as the date, day of the week, or month of the year. The correction is made by the user using the winding stem, which is not shown in the figures.

[0057] The longitudinal movement of the winding stem directly or indirectly causes the movement of a correction link 25 into a distinct position (generally the intermediate position of a three-position mechanism), which engages a sliding shunt 29 allowing the cam-driven mobile 4 to be actuated.

[0058] By turning the winding stem counterclockwise, the correcting gear 25 rotates clockwise, the sliding arm 29 rotates counterclockwise, and the cam 4 rotates clockwise. Thus, the cam 4 actuates the movement of the lever 5 against the correcting member 3 according to the process described previously. The indicator wheel 2 is therefore corrected incrementally each time a tooth of the cam lifts the lever 5.

[0059] Of course, the correction device 1 according to the invention is not limited to the embodiments just described and various simple modifications and variants can be envisaged by a person skilled in the art without going out of the scope of the invention as defined by the annexed claims.

Claims

1. Correction device (1) for an indication provided by a display mechanism for a clock movement equipped with the display mechanism comprising an indicator wheel (2), the actuation of the indicator wheel (2) allowing the display indication to be modified, characterized in that the correction device (1) includes a correcting member (3) movable between two positions, a rest position and a correction position, the correcting member (3) being configured to rotate the indicator wheel (2) when the correcting member (3) is in the correction position, and a rotating movable lever (5) including a first end (23) configured to come against the correcting member (3) to move it from the rest position to the correction position.

2. Correction device according to claim 1, characterized in thatIt includes a cam-driven mobile (4) capable of cooperating with the lever (5) to actuate the correcting member (3), when the cam-driven mobile (4) is actuated.

3. Correction device according to claim 2, characterized in that the lever (5) includes a second end having two arms (11, 15), an actuating arm (11) having an actuating beak (22) suitable for cooperating with the cam-driven mobile (4), and a pivoting arm (15) allowing the lever (5) to pivot when actuated.

4. Correction device according to claim 3, characterized in that the two arms (11, 15) delimit at least in part a space (25) between them.

5. Correction device according to claim 4, characterized in that the two arms (11, 15) are curved around said space (25).

6. Correction device according to claim 4 or 5, characterized in that the cam-operated mobile (4) is arranged in space (25).

7. A correction device according to any one of claims 3 to 6, characterized in that the two arms (11, 15) of the lever (5) are monobloc, preferably the lever (5) being monobloc.

8. A correction device according to any one of claims 3 to 7, characterized in that the cam-driven mobile (4) is provided with teeth (21) configured to push the actuating beak (22) of the actuating arm (11) of the lever (5).

9. A correction device according to any one of claims 3 to 8, characterized in that It includes a winding stem configured to actuate the cam-driven mobile (4), and therefore the lever (5).

10. A correction device according to any one of the preceding claims, characterized in that the correcting member (3) includes a correction arm (8) configured to push the indicator wheel (2) when the correcting member (3) is in the correction position.

11. Correction device according to claim 10, characterized in that the correcting member (3) includes a jumper arm (7) configured to position and prevent the indicator wheel (2) from turning in case of shocks when the correcting member (3) is in the rest position.

12. Correction device according to claim 11, characterized in that the jumper arm (7) and the correction arm (8) are at least partly arranged on either side of the indicator wheel (2).

13. Correction device according to claim 12, characterized in that the jumping arm (7) and the correction arm (8) are arranged to form together at least partly a U.

14. A correction device according to any one of claims 11 to 13, characterized in that The jumping arm (7) and the correction arm (8) are one piece.

15. A correction device according to any one of claims 11 to 14, characterized in that the correction arm (8) is arranged between the indicator wheel (2) and the lever (5).

16. A correction device according to any one of the preceding claims, characterized in that It includes a spring (6) exerting a restoring force on the correcting member (3), to return the correcting member (3) from the correction position to the rest position.

17. A correction device according to any one of the preceding claims, characterized in that the display mechanism is a moon phase display or a date display or a day display or a month display or a tide display or a time zone display.

18. A correction device according to any one of the preceding claims, characterized in that It extends substantially in the same plane.

19. Clock movement comprising a correction device (1) for an indication provided by a display mechanism according to any one of the preceding claims.

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