Timepiece mechanism arranged to engage separately with a first component and a second timepiece component

Abstract

The present invention relates to a timepiece mechanism (1) intended to engage separately with first and second timepiece components (100, 104; 200, 204), comprising: - a central pinion (30), - first and second lateral pinions (10; 20), - a connecting bridge (80), - a support bridge (90) or a plate, comprising three guide openings (91, 92, 93), each of the central pinion (30), the first lateral pinion and the second lateral pinion (10; 20) being arranged to slide in a corresponding guide opening (91, 92, 93), such that, when the user actuates an actuating device (60, 50, 40) in order to perform a first function, the first lateral pinion (10) engages with the first component (100, 104), and when the user actuates the actuating device (60, 50, 40) in order to perform a second function, the second lateral pinion (20) engages with the second component (200, 204).

Description

Clockwork mechanism arranged to cooperate separately with a first clockwork component and a second clockwork component technical field

[0001] The present invention relates to a watchmaking mechanism for cooperating separately with a first watchmaking component and a second watchmaking component, in order to perform a first and second function respectively, for example and without limitation for winding separately a first barrel and a second barrel. State of the art

[0002] A mechanical movement can comprise two similar or identical watch components, for example, two energy accumulators such as mainspring barrels. In this case, one mainspring barrel can be arranged to supply energy to the chain that measures current time, and a second mainspring barrel can be arranged to supply energy to the chain that measures elapsed time.

[0003] In another example, the movement could include a first barrel arranged to provide energy to a first animation, chime, etc., and a second barrel arranged to provide energy to a second animation, chime, etc.

[0004] The mechanical movement could include other similar or identical watch components, which are not necessarily barrels. For example, the mechanical movement could include a first correction system for a first indication, such as the first date indication like the month name, and a second correction system for a second indication, such as a second date indication like the day of the month. Other possible, but not exhaustive, examples include the correction of TAG-128-PCT calendar and / or perpetual calendar, rapid time correction in GMT, moon phases, tide gauges, equations of time, etc.

[0005] Clockwork mechanisms arranged to cooperate (for example by direct or indirect meshing) separately with a first clockwork component and a second clockwork component, in order to perform a first and a second function respectively, are known.

[0006] In this context, the expression "cooperate separately with a first watch component and a second watch component" indicates that when the watch mechanism cooperates with the first watch component, it does not cooperate with the second watch component, and vice versa. In other words, the watch mechanism is arranged to cooperate during a first time period with the first watch component, and during a second time period, preceding and / or following the first time period, with the second watch component.

[0007] A non-limiting example of a watch mechanism to cooperate separately with a first watch component and a second known watch component is a watch mechanism that allows two separate barrels to be wound separately.

[0008] Some known mechanisms are based on a double winding wheel or a differential. They are complex to design and manufacture.

[0009] Other known mechanisms are based on a disengageable winding wheel (or crown wheel). In this case, a winding stem, operated by the user, works with a single winding wheel, which is arranged to wind the two mainspring barrels separately. The two barrels are positioned on opposite sides of the winding stem. TAG-128-PCT

[0010] In this known solution, by turning the stem in one direction, for example downwards or clockwise, the barrel that is wound is the one that is at the top relative to the winding stem and vice versa, which is counterintuitive for the watch user, especially of a wristwatch.

[0011] Furthermore, the torque required between the winding stem and the barrels via the winding wheel to wind each barrel is significant. Moreover, its transfer is not optimal, making this solution more susceptible to wear: over time, the actuation torque can increase sharply, potentially leading to seizing and even breakage. Brief summary of the invention

[0012] One aim of the present invention is to propose a clockwork mechanism to cooperate separately with a first clockwork component and a second clockwork component in order to perform a first and second function respectively, free from the limitations of known clockwork mechanisms.

[0013] Another objective of the present invention is to propose a clockwork mechanism to cooperate separately with a first clockwork component and a second clockwork component in order to perform a first and second function respectively, alternative to known clockwork mechanisms.

[0014] Another objective of the present invention is to propose a watch mechanism to cooperate separately with a first watch component and a second watch component in order to perform a first and second function respectively, the operation of which is more intuitive for the watch user. TAG-128-PCT

[0015] An optional objective of the present invention is to provide a watch mechanism to cooperate separately with a first watch component and a second watch component in order to perform a first respectively a second function, in which the torque required between the actuation device (for example and without limitation the winding stem) and the watch components is less than in relation to known solutions.

[0016] Another optional objective of the present invention is to propose a watchmaking mechanism to cooperate separately with a first watchmaking component and a second watchmaking component in order to perform a first and second function respectively, which is less exposed to wear compared to known solutions.

[0017] According to the invention, these goals are achieved in particular by means of the clockwork mechanism according to claim 1, preferred embodiments being given in the dependent claims.

[0018] The clockwork mechanism for cooperating separately with a first clockwork component and a second clockwork component according to the invention comprises: - a central pinion, - a first lateral pinion, - a second lateral pinion, - a connecting bridge, arranged to link the central pinion, the first lateral pinion, and the second lateral pinion, - a support bridge or a plate, comprising three guide openings.

[0019] According to the invention, each of the central pinion, the first lateral pinion and the second first lateral pinion is arranged to slide in a corresponding guide opening. TAG-128-PCT

[0020] According to the invention, the guide openings are arranged so that, when the user actuates an actuation device to perform a first function (for example by turning it in a first direction), the central pinion moves (for example in translation) in a first direction, causing a first displacement (for example by roto-translation) of the connecting bridge, so that the first lateral pinion cooperates (directly or indirectly) with the first component, thus performing a first function.

[0021] According to the invention, the guide openings are arranged so that, when the user actuates the actuation device to perform a second function (for example by turning it in a second direction opposite to the first), the central pinion moves (for example in translation) in a second direction opposite to the first direction, causing a second displacement (for example by roto-translation) of the connecting bridge so that the second lateral pinion cooperates (directly or indirectly) with the second component, thus performing a second function.

[0022] The watch mechanism according to the invention allows for more intuitive operation for the user of the watch (or wristwatch) who understands it: indeed, when the user operates the actuation device, for example by turning it downwards, the watch mechanism cooperates with the watch component which is located below the actuation device and vice versa.

[0023] The clockwork mechanism according to the invention is also free-floating in the main plane of the mechanical movement. It has a certain degree of freedom of movement, its displacements being different each time. Only the central pinion, the first lateral pinion, and the second first lateral pinion, which are arranged to slide in a corresponding guide opening, will limit and guide the movement of the clockwork mechanism. TAG-128-PCT

[0024] The clock mechanism according to the invention therefore allows good cooperation, for example by meshing, with the first respectively second clock component, avoiding for example tooth-on-tooth stops.

[0025] The clock mechanism according to the invention also has a small footprint.

[0026] In one embodiment, the clockwork mechanism includes the actuation device, which includes an actuating wheel arranged to mesh (directly or indirectly) with the central pinion.

[0027] In one embodiment, during the execution of a function, the central pinion is offset from the actuation device; that is, its center does not lie in the principal direction of the actuation device. This increases gear efficiency and thus reduces the torque required between the actuation device and the watch components, optimizing its transfer and thereby reducing wear on the watch mechanism.

[0028] In one embodiment, the central pinion is located in correspondence with a central zone of the connecting bridge.

[0029] In one embodiment, the first lateral pinion is located at the correspondence of one end of a first lateral zone of the connecting bridge.

[0030] In one embodiment, the second lateral pinion is located at one end of a second lateral zone of the connecting bridge, opposite the first lateral zone with respect to the central zone. TAG-128-PCT

[0031] In one embodiment, the connecting bridge is V-shaped or L-shaped.

[0032] In one embodiment, the openings are through-opening.

[0033] In one embodiment, the openings are blind.

[0034] In one embodiment, the diameter of the central pinion is greater than the diameter of each of the lateral pinions.

[0035] In one embodiment, the watch mechanism includes a friction element in contact with at least a portion of the central pinion, the lateral pinion or the connecting bridge.

[0036] In one embodiment, the drive wheel includes a double inclined cutting for at least one tooth, and in particular for all the teeth.

[0037] The present invention also relates to a watch movement, for example a mechanical watch movement, comprising the watch mechanism according to the invention.

[0038] The present invention also relates to a timepiece, for example a watch such as a wristwatch, comprising the clockwork mechanism according to the invention or the movement according to the invention. Brief description of the figures

[0039] Examples of implementation of the invention are given in the description illustrated by the accompanying figures, in which: TAG-128-PCT Figure 1 A illustrates a top view of the watch mechanism according to an embodiment of the invention, corresponding to the bottom view in the movement environment (bridge side), during the performance of a first function, for example the winding of a first barrel. Figure 1B illustrates a perspective view of the clockwork mechanism of Figure 1A. Figure 2A illustrates a top view of the clockwork mechanism of Figure 1A, during the performance of a second function, for example the winding of a second barrel. Figure 2B illustrates a perspective view of the clockwork mechanism of Figure 2A. Figure 3A illustrates a top view of a portion of the clockwork mechanism according to one embodiment of the invention. Figure 3B illustrates a perspective view of the portion of the clockwork mechanism shown in Figure 3A. Figure 4A illustrates an exploded view of a portion of the clockwork mechanism according to one embodiment of the invention. Figure 4B illustrates a first perspective view of the portion of the clockwork mechanism shown in Figure 4A. Figure 4C illustrates a second perspective view of the portion of the clockwork mechanism shown in Figure 4A. Figure 5A illustrates a top view of a portion of a mechanical movement comprising the clockwork mechanism according to a mode of TAG-128-PCT realization of the invention, during the performance of a first function, for example the rewinding of a first barrel. Figure 5B illustrates a perspective view of the portion of mechanical motion in Figure 5A. Figure 6A illustrates a top view of the portion of mechanical movement of Figure 5A, during the performance of a second function, for example the winding of a second barrel. Figure 6B illustrates a perspective view of the portion of mechanical motion in Figure 6A. Figure 7 illustrates a perspective view of a winding wheel according to one embodiment of the invention. Example(s) of embodiment(s) of the invention

[0040] In the following description, provided by way of example, reference will be made, for simplicity, to a clockwork mechanism that allows two mainspring barrels to be wound separately. It should be understood, however, that the invention is not limited to such an application, but also includes clockwork mechanisms that are not necessarily arranged to wind two mainspring barrels separately, provided that they are arranged to cooperate separately with a first clockwork component and a second clockwork component, in order to perform a first and a second function, respectively.

[0041] Figure 1A illustrates a top view of the clockwork mechanism 1 according to one embodiment of the invention, during the performance of a first function, for example, the winding of a first barrel (not shown). Figure 1B illustrates a perspective view of the clockwork mechanism 1 of Figure 1A. TAG-128-PCT

[0042] The clockwork mechanism 1 in Figures 1A and 1B comprises: - a central pinion 30, - a first lateral pinion 10, - a second lateral pinion 20.

[0043] A connecting bridge 80 is arranged to link the central pinion 30, the first lateral pinion 10 and the second lateral pinion 20.

[0044] In the embodiment of figures 1A and 1B, the central pinion 30 is located in correspondence with a central zone of the connecting bridge 80, the first lateral pinion 10 is located in correspondence with an end of a first lateral zone of the connecting bridge 80 and the second lateral pinion 20 is located in correspondence with an end of a second lateral zone of the connecting bridge 80, opposite to the first lateral zone with respect to the central zone.

[0045] In the embodiment of Figures 1A and 1B, the connecting bridge 80 is V-shaped. However, the connecting bridge 80 could have other shapes, for example an L-shape. In one embodiment, the connecting bridge 80 is symmetrical.

[0046] In the embodiment shown in Figures 1A and 1B, the diameter of the central pinion 30 is larger than the diameter of each of the lateral pinions 10 and 20. In one embodiment, the number of teeth is determined by the specific ratio between the winding wheel 40 and the central pinion 30, which allows for meshing at a certain angle, for example, 90°. In one embodiment, the lateral pinions 10 and 20 are dimensioned to minimize their overall size.

[0047] In the embodiment of figures 1A and 1B, the side gears 10, 20 are similar or identical. TAG-128-PCT

[0048] The clock mechanism 1 of figures 1A and 1B also includes a support bridge 90 or a plate, which includes three guide openings 91, 92 and 93, an example of which can be seen in figures 3A and 3B.

[0049] Although the guide openings 91, 92 and 93 are through openings in Figures 3A and 3B, this feature is not necessary and the guide openings 91, 92 and 93 can also be blind, provided that they can guide the movement of the clock mechanism 1.

[0050] According to the invention, each of the central pinion 30, the first lateral pinion 10 and the second first lateral pinion 20 is arranged to slide in a corresponding guide opening 93, 91 respectively 92.

[0051] In one embodiment, illustrated in figures 4A to 4C, the clock mechanism includes for each of the central pinion 30, the first lateral pinion 10 and the second first lateral pinion 20 a stud 31, 11 respectively 21, which is partially received in a corresponding (through) opening of the corresponding pinions.

[0052] A first end 310, 110 respectively 210 of each block 31, 11 respectively 21 is received in a corresponding (through) opening 83, 81 respectively 82 of the connecting bridge 80, thus ensuring the connection between the connecting bridge and each of the central pinion 30, the first lateral pinion 10 and the second first lateral pinion 20.

[0053] A second end 311, 111 respectively 211 of each pin 31, 11 respectively 21, opposite the first end 310, 110 respectively 210, is received in a corresponding guide opening 93, 91 respectively 92. This allows the guidance of the clockwork mechanism 1. TAG-128-PCT

[0054] In one embodiment and as seen for example in figures 3A and 3B, the guide opening 93 intended to guide the movement of the central pinion 30 has two substantially straight and parallel sides 930, 932 (namely parallel with an angular tolerance of less than 5%, for example less than 2%) so that the central pinion 30 can move by translation.

[0055] The ends 931 of the guide opening 93 intended to guide the movement of the central pinion 30 are substantially curved in the embodiment of Figures 3A and 3B, as this simplifies the machining of the guide opening 93. However, this feature is not essential and the guide opening 93 could have other shapes at the ends, for example shapes which make the guide opening 93 substantially rectangular.

[0056] In one embodiment, and as can be seen for example in Figures 3A and 3B, the guide openings 91 and 92 are substantially identical and symmetrical with respect to the X axis of symmetry of the clock mechanism 1. However, in other embodiments, the guide openings 91 and 92 are not substantially identical and / or symmetrical.

[0057] In one embodiment and as seen for example in figures 3A and 3B, each guide opening 91, 92 intended to guide the movement of the first respectively second lateral pinion 10, 20 has a side of which a portion 910', 920' is substantially straight: this makes it possible to control the center distance between the lateral pinion 10 respectively 20 and the movable 100 respectively 200.

[0058] In one embodiment and as seen for example in figures 3A and 3B, another portion 910", 920" of each guide opening 91, 92, adjacent to the straight portion 910', 920', is curved so as to control how the lateral pinion 10 respectively 20 approaches the moving part 100 respectively 200 in view of a gearing. TAG-128-PCT

[0059] In one embodiment and as seen for example in figures 3A and 3B, each guide opening 91, 92 includes another side 912, 922 which is curved: this represents a safety feature for a pinion which is not shown in the figures.

[0060] As with the ends 931 of the guide opening 93, the ends 911, 921 of the openings 91, 92 are substantially curved in the embodiment of Figures 3A and 3B, because this simplifies the machining of the guide opening 91, 92. However, this feature is not essential and each guide opening 91, 92 could have other shapes at the ends, for example shapes which make the guide openings 91, 92 substantially rectangular.

[0061] In one embodiment and as seen for example in figures 3A and 3B, the support bridge 90 also includes an opening 94, which is through, in order to receive a portion of the winding wheel 40 for its gearing with the central pinion 30. In one embodiment, the winding wheel 40 is substantially perpendicular to the plane of the support bridge 90.

[0062] In one embodiment and as can be seen for example in figures 3A and 3B, the opening 94 is substantially parallel to the opening 93.

[0063] In one embodiment and as seen for example in figures 3A and 3B, the support bridge 90, which in one embodiment corresponds to the movement plate, also includes the axes 105, 205 of the first respectively second moving part 100, 200, arranged to cooperate with the first respectively second lateral pinion 10, 20.

[0064] The user can operate an actuation device to perform a first function, for example the crown 60 to wind a barrel. TAG-128-PCT

[0065] When the crown is operated, the winding stem 50, attached to the crown 60, also rotates, for example, in the direction of arrow Ai in Figure 1A, which causes the winding wheel 40 to rotate, which in the embodiment of Figure 1A meshes directly with the central pinion 30.

[0066] The guide opening 93 is arranged so that this central pinion 30 moves by translation in the direction of arrow Bi in Figure 1A, while rotating around its axis in the direction of arrow Ci in Figure 1A, which causes a first movement (by roto-translation in the case of Figure 1A) of the connecting bridge 80 via the guide openings 92, 93, so that the first lateral pinion 10, which therefore rotates in the direction of arrow Di in Figure 1A, cooperates with a first component, for example the mobile 100, which therefore rotates in the direction of arrow Di in Figure 1A, thus performing a first function, in particular the winding of a first barrel 104, visible in Figures 5A and 5B.

[0067] In the embodiment of figures 5A and 5B, a train of moving parts 102 and 103 (the number of which is not limiting) separates the lateral pinion 10 from the barrel 104.

[0068] In another embodiment, the side pinion 10 could mesh directly with the barrel 104 or with any other component for the purpose of performing a first function.

[0069] Figure 2A shows a top view of the clockwork mechanism 1 of Figure 1A during the performance of a second function, for example, the winding of a second barrel (not shown). Figure 2B shows a perspective view of the clockwork mechanism 1 of Figure 2A.

[0070] The user can then operate crown 60 to wind a second barrel. TAG-128-PCT

[0071] When the crown is operated, the winding stem 50, attached to the crown 60, also rotates, for example, in the direction of arrow A2 in Figure 2A, which causes the winding wheel 40 to rotate, which in the embodiment of Figure 2A meshes directly with the central pinion 30.

[0072] The guide opening 93 is arranged so that this central pinion 30 moves by translation in the direction of arrow B2 in Figure 2A (opposite to the direction of arrow B1 in Figure 1A), while rotating around its axis in the direction of arrow C2 in Figure 2A (opposite to the direction of arrow Ci in Figure 1A), which causes a second movement (by roto-translation in the case of Figure 2A) of the connecting bridge 80 via the guide openings 92, 93, so that the second lateral pinion 20, which therefore rotates in the direction of arrow D2 in Figure 2A, cooperates with a second component, for example the mobile 200, which therefore rotates in the direction of arrow D2 in Figure 2A, thus performing a second function, in particular the winding of a second barrel 204, visible in Figures 6A and 6B.

[0073] In the embodiment of figures 6A and 6B, a train of moving parts 201, 202 and 203 (the number of which is not limiting) separates the lateral pinion 20 from the barrel 204.

[0074] In another embodiment, the side pinion 20 could mesh directly with the barrel 204 or with any other component for the purpose of performing a second function.

[0075] The clock mechanism 1 is arranged so that when the first function is performed, it is not possible to perform the second function and vice versa: for example, in the embodiment of figures 1A and 1B, the roto-translation of the connecting bridge 80 allows that when the first lateral pinion 10 meshes with the first mobile 100, the second lateral pinion 20 is sufficiently far from the second mobile 200, so as to prevent any drive. TAG-128-PCT

[0076] Similarly, in the embodiment of figures 2A and 2B, the roto-translation of the connecting bridge 80 ensures that when the second lateral pinion 20 meshes with the second moving part 100, the first lateral pinion 10 is sufficiently far from the first moving part 100, so as to prevent any drive.

[0077] In one embodiment, and as seen for example in figures 1A or 2A, when performing a function (namely the winding of the first respectively second barrel), the central pinion 30 is offset relative to the actuation device, namely its center does not lie in the main direction of the winding stem 50. This makes it possible to reduce the torque required between the winding stem 50 and each barrel and to optimize its transfer, thereby reducing wear on the watch mechanism 1.

[0078] In one embodiment, the clock mechanism 1 includes a friction element 70, which in the embodiment of the figures is in contact with a portion of the central pinion 30. However, in other embodiments (not illustrated) it may be in contact with a portion of a lateral pinion 10, 20 or of the connecting bridge 80.

[0079] In one embodiment, it includes a first portion 79 arranged to fix it (in a movable or removable way) on the bridge 90, for example by means of a pin 97 visible in Figure 3B, and a second portion 73 intended to come into contact with a portion of the central pinion 30 (or of a lateral pinion 10, 20 or of the connecting bridge 80).

[0080] In one embodiment, its width I, visible in Figure 1B, is arranged so that its second portion 73 can have sufficient contact with the portion of the central pinion 30 (or of a lateral pinion 10, 20 or of the connecting bridge 80) both when performing the first and second functions. TAG-128-PCT

[0081] As can be seen in figures 1A to 2B and 5A to 6B, the watch mechanism according to the invention allows for more intuitive operation for the user of the watch (or wristwatch) who understands it: indeed, when the user operates the crown 60 and therefore the winding stem 50 for example by turning it downwards (figures 1 A, 1 B, 5A, 5B) the watch mechanism cooperates with the mobile 100 and therefore the barrel 104 which is located below relative to the winding stem 50.

[0082] When the user operates the crown 60 and therefore the winding stem 50 for example by turning it upwards (figures 2A, 2B, 6A, 6B) the watch mechanism cooperates with the mobile 100 and therefore the barrel 104 which is located at the top relative to the winding stem 50.

[0083] Figure 7 illustrates a perspective view of a winding wheel 40 according to one embodiment of the invention. In one embodiment, this winding wheel 40 comprises a double inclined face for at least one tooth 400, and in particular for all the teeth 400, as seen in Figure 7. Usually, the face is inclined in only one direction of rotation of the wheel, because there is only one direction of meshing. In the watch mechanism 1, the winding wheel 40 is arranged to rotate in two directions of meshing, one opposite to the other, with two positions on each side of the oblong. The inclined face of the winding wheel 40 can therefore be symmetrical (double face), thus allowing two faces on at least one tooth 400, and in particular on each tooth 400, and therefore optimized meshing in both directions of rotation. TAG-128-PCT Reference symbols used in figures Clockwork mechanism First side pinion First plot Second side sprocket Second plot Central pinion Central plot Winding wheel Actuating device - winding stem Winding crown Friction element Portion of the friction element 30 Portion of the friction element 30 Link bridge Opening Opening Opening Support bridge or base plate Opening of the guide Opening of the guide Opening of the guide Opening for the winding wheel Pin Mobile Mobile Mobile Barrel Axis of the mobile 100 First end of the first plot Second end of the first plot Mobile Mobile Mobile TAG-128-PCT 203 Mobile 204 Barrel 205 Mobile axis 200 210 First end of the second pin 211 Second end of the second pin 310 First end of the central pin 311 Second end of the central pin 400 Tooth 910' Straight portion on one side of the guide opening 91 910" Curved portion on one side of the guide opening 91 911 End of the guide opening 91 912 Side of the guide opening 91 920' Straight portion on one side of the guide opening 92 920" Curved portion on one side of the guide opening 92 921 End of the guide opening 92 922 Side of the guide opening 92 930 Side of the guide opening 93 931 End of the opening guide 93 932 Side of the guide opening 93 1000 Watch movement AI,2 Arrow Bl,2 Arrow c Center of central pinion 30 I,2 Arrow Dl,2 Arrow El,2 Arrow I Width of friction element 30 X Axis of symmetry TAG-128-PCT

Claims

Demands 1. Clockwork mechanism (1) for cooperating separately with a first clockwork component (100, 104) and a second clockwork component (200, 204) comprising: - a central pinion (30), - a first lateral pinion (10), - a second lateral pinion (20), - a connecting bridge (80), arranged to connect the central pinion (30), the first lateral pinion (10) and the second lateral pinion (20), - a support bridge (90) or a plate, comprising three guide openings (91, 92, 93), each among the central pinion (30), the first lateral pinion (10), and the second first lateral pinion (20) being arranged to slide in a corresponding guide opening (91, 92, 93), the guide openings (91, 92, 93) being arranged so that, when the user actuates an actuation device (60, 50, 40) to perform a first function, the central pinion (30) moves in a first direction (Bi), causing a first displacement of the connecting bridge (80), so that the first lateral pinion (10) cooperates with the first component (100, 104), thus performing a first function, the guide openings (91, 92, 93) being arranged so that, when the user actuates the device actuation (60, 50, 40) in order to perform a second function,The central pinion (30) moves in a second direction (B2) opposite to the first direction (B1), causing a second displacement of the connecting bridge (80) so that the second lateral pinion (20) cooperates with the second component (200, 204), thus performing a second function.

2. Clock mechanism (1) according to claim 1, comprising the actuation device (60, 50, 40), the actuation device comprising an actuation wheel (40) arranged to mesh with the central pinion (30). TAG-128-PCT 3. Clock mechanism (1) according to any one of claims 1 or 2, wherein during the performance of the first function or the second function, the central pinion (30) is offset relative to the actuation device (60, 50, 40).

4. Clock mechanism (1) according to any one of claims 1 to 3, in which the central pinion (30) is located in correspondence with a central area of ​​the connecting bridge (80).

5. Clock mechanism (1) according to any one of claims 1 to 4, wherein the first lateral pinion (10) is located in correspondence with one end of a first lateral zone of the connecting bridge (80).

6. Clock mechanism (1) according to any one of claims 1 to 5, wherein the second lateral pinion (20) is located in correspondence with one end of a second lateral zone of the connecting bridge (80), opposite to the first lateral zone with respect to the central zone.

7. Clock mechanism (1) according to any one of claims 1 to 5, comprising a friction element (70) in contact with at least a portion of the central pinion (30), the first lateral pinion (10), the second lateral pinion (20) or the connecting bridge (80).

8. Clock mechanism (1) according to any one of claims 2 to 7, the drive wheel (40) comprising a double inclined cutting for at least one tooth (400).

9. Clock movement, for example a mechanical clock movement, comprising the clock mechanism according to any one of claims 1 to 8. TAG-128-PCT 10. Timepiece, for example a watch such as a wristwatch, comprising the timekeeping mechanism according to any one of claims 1 to 8 or the movement according to claim 9. TAG-128-PCT

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