Timepiece mechanism

Abstract

A clockwork mechanism (1) for driving a part (40), comprising: a monolithic rocker (10) with a rigid body (13) and at least one flexible blade (14, 15), having a first end connected to the rigid body and a second end connected to a fixed frame (90), a first interaction portion (11) and a second interaction portion (12), the two interaction portions being connected by the rigid body (13), a first actuator (50), a second actuator (30), wherein when the first actuator (50) interacts with the first interaction portion (11), the rigid body (13) rotates about a virtual axis (X) so as to drive the part (40) with a first winding torque with respect to the external virtual axis (X), and when the second actuator (30) interacts with the second interaction portion (12), the rigid body (13) rotates substantially about said axis (X) so as to drive the part (40) with a second couple.

Description

Domaine technique

[0001] The present invention relates to a clockwork mechanism for driving a part. The present invention also relates to a clockwork movement and / or clockwork part, comprising the clockwork mechanism according to the invention. Etat de la technique

[0002] Clockwork mechanisms that allow, for example, but not necessarily, an instantaneous jump to drive a part, for example a display organ or a display wheel, bearing an indication, for example a large date, a GMT indication, month indications etc., are widely known.

[0003] It is possible to drive a display wheel automatically, without user intervention, for example via a wheel in a basic movement, and also to correct the display shown by this wheel via an actuation device such as a button or push-button, mounted, for example, on a winding stem. To achieve this, known solutions include several components and / or have a certain thickness.

[0004] Document CH717495 describes several configurations for single-piece devices with flexible blades for transmitting motion between an actuator and a receiver. These devices utilize the properties of certain known mechanisms (the Hoeckens mechanism, the Roberts mechanism, the Klann mechanism, etc.) to drive certain horological functions, for example, display functions. Document CH 716 385 A1 describes a horological mechanism for driving and locking a jumping wheel, whose rocker pivots around an axis of the horological mechanism.

[0005] State-of-the-art solutions include several components and / or have a certain thickness, the latter aspect making them poorly or not at all compatible with use in a fine watchmaking component. Bref résumé de l'invention

[0006] One aim of the present invention is to propose a clockwork mechanism free from the limitations of known clockwork mechanisms.

[0007] Another aim of the invention is to offer a clockwork mechanism that has fewer components compared to known clockwork mechanisms.

[0008] Another aim of the invention is to offer a watch mechanism that has a reduced thickness compared to known watch mechanisms.

[0009] Another aim of the invention is to offer an alternative clockwork mechanism to known clockwork mechanisms.

[0010] These goals are achieved in particular by means of the clockwork mechanism according to the invention.

[0011] A first object of the invention is a clockwork mechanism for driving a part, comprising: a monolithic rocker comprising: a rigid body, at least one flexible blade, having a first end connected to the rigid body and a second end connected to a fixed frame, a first interaction portion and a second interaction portion, the two interaction portions being connected by the rigid body, a first actuator, arranged to interact with the first interaction portion to drive the part, a second actuator, arranged to interact with the second interaction portion to drive the part, wherein when the first actuator interacts with the first interaction portion, the rigid body rotates about a virtual axis external to the clockwork mechanism so as to drive the part with a first winding torque with respect to the external virtual axis, and when the second actuator interacts with the second interaction portion,The rigid body rotates approximately around said axis so as to drive the part with a second torque.

[0012] Preferably, the interaction between the first actuator and the first interaction portion prevents the workpiece from being driven, and / or the interaction between the second interaction portion and the second actuator prevents the workpiece from being driven. The workpiece can be a coding wheel, for example, connected to a large-date display, and the first actuator can be a driving wheel and / or the second actuator can be a display correction wheel for the display. Optionally, the monolithic rocker arm includes a hook for driving the workpiece.

[0013] The mechanism may include two flexible blades. The axis may be positioned at the intersection of the principal directions of the two flexible blades.

[0014] The first and / or second interaction portion can be protrusions of the rigid body. The second interaction portion is defined by two substantially straight sides, one of these sides belonging to a straight line that passes substantially through the axis.

[0015] The rigid body can be a primary rigid body, with the monolithic rocker comprising a secondary rigid body. The flexible blade(s) are connected to the frame via this secondary rigid body. The secondary rigid body may have a portion shaped to receive a section of the rocker, for example, an angled portion of the monolithic rocker, to protect the watch mechanism from impacts. The monolithic rocker may also include a jumper with one end connected to the rigid body.

[0016] Preferably, at least one of the first and second winding torques is between 0.5 N·mm and 15 N·mm.

[0017] A second object of the invention is a clockwork mechanism for driving a wheel with jumps, for example instantaneous jumps, the clockwork mechanism comprising: a hook arranged to drive the wheel with jumps, for example instantaneous jumps, a jumper for locking the position of the wheel after an instantaneous jump, the wheel, in which the wheel comprises 'N' teeth defining 'N' spaces between a tooth and the following one, in which 'N - 1' spaces are first spaces which have the same width and a space is a second space which has a width which is twice the width of the 'N - 1' spaces plus the width of a tooth, the hook is a double hook, and the jumper is a double jumper.

[0018] Secondary provisions introduce important and advantageous, but not indispensable, features, such as the fact that the double hook and the double jumper belong to a monolithic rocker, that the double hook comprises a first hook and a second hook, and that the wheel is driven: by the first hook and / or by the second hook, when the first hook is received in a first space and the second hook is received in a first space adjacent to that which receives the first hook, only by the first hook, when both the first hook and the second hook are received in the second space, only by the second hook, when the first hook is received in the second space, and the second hook is received in a space directly adjacent to the second space.

[0019] Optionally, when the first hook is received in a first space and the second hook is received in a first space adjacent to the one that receives the first hook, the wheel is driven: initially only by the first hook and, subsequently, only by the second hook.

[0020] The optional double jumper includes a first jumper having a shape and dimensions adapted to be received by one of the first spaces in order to block the drive of the wheel, and a second jumper having a shape and dimensions substantially equal to those of the first jumper.

[0021] Preferably, the position of the wheel is blocked: both by the first jumper and the second jumper, when both the first jumper and the second jumper are in the second space, by one between the first jumper and the second jumper, when at least one between the first jumper and the second jumper is in a first space directly adjacent to the second space and the other jumper is in the second space, by the other between the first jumper and the second jumper, when at least one between the first jumper and the second jumper is in the other first space directly adjacent to the second space, both by the first jumper and the second jumper, in the other cases.

[0022] The double hook and / or double jumper are connected to a fixed frame by a flexible blade.

[0023] The wheel may be a coding wheel, and the clockwork mechanism may include a display wheel connected to a display element. The wheel may also include a notch corresponding to the second space, arranged to allow the display wheel to be mounted in the clockwork mechanism, and the rocker may also include a jumper to lock the display wheel in position.

[0024] The coding wheel can be a first coding wheel, and the display organ a first display organ, while the clockwork mechanism includes a second coding wheel, coaxial with the first coding wheel and carrying a second display organ.

[0025] Optionally, the rocker may include: a rigid body, at least one flexible blade, having a first end connected to the rigid body and a second end connected to a fixed frame, a first interaction portion, the clockwork mechanism also comprising: a first actuator, arranged to interact with the first interaction portion to actuate both the double hook and the double jumper, a second interaction portion connected to the first second interaction portion by the rigid body, the clockwork mechanism also comprising: a second actuator, arranged to interact with the second interaction portion to actuate both the double hook and the double jumper.

[0026] A third object of the invention is an anti-double jump clockwork mechanism of an instantaneous jump display wheel, comprising: the display wheel, including display teeth, a coding wheel, including coding teeth, and arranged to advance the display wheel with instantaneous jumps, wherein at least one coding tooth has a profile including a slope, wherein the display wheel has an external diameter arranged so that at least one tooth of the display wheel comes into contact with said slope after an instantaneous jump, and wherein said slope is arranged so that the angle between the normal to the slope at the point of contact and the radius of the coding wheel at the point of contact is in the range between 5° and 25°, so as to prevent a double jump of the display wheel.

[0027] Alternatively, the same arrangement can be used to create a shock-absorbing mechanism that prevents the display wheel's reading from being altered by a collision, whether it is a jump wheel or a progressively advancing wheel. Preferably, but not necessarily, the angle is within the range of 5° to 25°, for example, between 10° and 22°, or the display teeth may include a rounded tip arranged to make contact with the slope. Optionally, the angle varies within the specified range as the rounded tip moves along the slope.The mechanism may include a jumper to lock the position of the coding wheel after an instantaneous jump. The jumper has a slope, such that when one tooth of the display wheel contacts the slope of the coding wheel, another tooth of the coding wheel contacts the slope of the jumper, thus preventing a double jump of the display wheel. The coding wheel may have 'N' coding teeth defining 'N' spaces between one tooth and the next, where 'N - 1' spaces are first spaces of equal width, and 'a' space is a second space with a width that is twice the width of the first 'N - 1' spaces plus the width of a tooth. The jumper may optionally be a double jumper, and the mechanism may include a hook or a double hook arranged to drive the coding wheel with an instantaneous jump.The double hook and / or double jumper preferably belong to a monolithic rocker which, in turn, may also include a jumper to lock the position of the display wheel.

[0028] The coding wheel may be a first coding wheel, and the display element a first display element, for example, a first display wheel, while the clockwork mechanism includes a second coding wheel, coaxial with the first coding wheel and carrying a second display element, for example, a second display wheel. The second coding wheel is arranged to advance the second display wheel with instantaneous jumps, if required. The second display wheel may be associated with a jumper having a substantially flat profile in a principal plane of the clockwork mechanism. Alignment of the second display wheel with the first display wheel may be ensured by an eccentric cooperating with at least one flexible blade.

[0029] All variants of the clockwork mechanism detailed above can be incorporated into a watch movement or a dress watch. The three objects of the invention can be implemented independently, or in combination within a single mechanism comprising any compatible combination of features from each.

[0030] These solutions have the advantage over previous methods of having fewer components and / or a reduced thickness compared to known watchmaking mechanisms. Brève description des figures

[0031] Examples of implementation of the invention are given in the description illustrated by the accompanying figures, in which: There figure 1 illustrates a top view of a watch movement comprising the clockwork mechanism according to one embodiment of the invention. figure 2A illustrates a top view of a wheel, in particular a coding wheel, of the clockwork mechanism according to one embodiment of the invention. figure 2B illustrates a top-down view of the coding wheel of the Figure 2A , and a display wheel for the clockwork mechanism according to an embodiment of the invention La figure 3A illustrates a top view of a clockwork mechanism according to one embodiment of the invention. figure 3B illustrates a side view of the clockwork mechanism of the figure 3A . There figure 3C illustrates a view from below of the clockwork mechanism of the figure 3A . There figure 4 illustrates a top view of a clockwork mechanism according to one embodiment of the invention, in a first position. figure 5 illustrates a top view of the clockwork mechanism of the figure 4 in second place. The figure 6 illustrates a top view of the clockwork mechanism of the figure 4 in third position. The figure 7 illustrates a top view of the clockwork mechanism of the figure 4 in fourth position. The figure 8 illustrates a top view of a portion of the clockwork mechanism according to one embodiment of the invention, in a first position. figure 9 illustrates a top view of the clockwork mechanism part of the figure 8 in second place. The figure 10 illustrates a top view of the clockwork mechanism part of the figure 8 in third position. The figure 11 illustrates a top view of the clockwork mechanism of the figure 4 in fifth position. The figure 12 illustrates a top view of the clockwork mechanism of the figure 4 in sixth position. The figure 13 illustrates a top view of a portion of the clockwork mechanism according to one embodiment of the invention. Exemple(s) de mode(s) de réalisation de l'invention

[0032] In the following description, provided by way of example, reference will be made, for simplicity, to a clockwork mechanism that allows for the instantaneous display of a large date. It should be understood, however, that the invention is not limited to such an application, but also includes other applications, for example, but not limited to, a GMT application or an application that allows for the indication of the month.

[0033] The invention is also not limited to a jump display, for example an instant jump display.

[0034] There figure 1 illustrates a top view of a watch movement comprising the watch mechanism 1 according to an embodiment of the invention. In this embodiment, the watch mechanism 1 drives a part, which in the illustrated example is a coding wheel 40 connected to a display element, for example a large-date display element, such as a display wheel (not visible in the figures).

[0035] On the figure 1 The clockwork mechanism is only partially illustrated and will not be described in detail here. It allows, in a known way, at least the display of the current time. The clockwork mechanism is preferably entirely mechanical, but it can also be an electromechanical movement.

[0036] The clock mechanism 1 includes a monolithic rocker 10. In this context, the adjective "monolithic" indicates that the rocker 10 is made monolithically.

[0037] As used here, "monolithic" refers to a watch component composed of elements which, by the nature or form of their assembly, are so closely joined that any deformation of one element causes deformation of the others. A monolithic component can advantageously be formed from a single piece of material, possibly treated to present an outer layer of a different nature from the rest of the material (for example, an oxidized layer).

[0038] In one embodiment, the rocker 10 is made of steel or silicon. In another embodiment, it is made of glass, sapphire or alumina, diamond, in particular synthetic diamond (in particular synthetic diamond obtained by a chemical vapor deposition process), titanium, titanium alloy (in particular an alloy of the Gum metal (R) family) or an alloy of the elinvar family, in particular Elinvar (R), Nivarox (R), Thermelast (R), NI-Span-C (R) and Precision C (R), shape memory alloy, in particular Nitinol, plastic or nickel alloy (for example NiP, Ligaflex etc.).

[0039] In one embodiment, the flip-flop 10 is produced by photolithography from a wafer, for example a silicon wafer, by laser cutting, by LIGA (for "Röntgenlithographie, Galvanoformung und Abformung"), etc.

[0040] This monolithic rocker 10 comprises a rigid body 13 and at least one flexible blade, two in the illustrated example (references 14 and 15 on the figure 1 ).

[0041] In this context, the expression "rigid body" refers to a body which is not intended to be deformed during the operation of the clockwork mechanism 1 according to the invention, and whose rigidity is greater than that of the flexible blades.

[0042] In the context of this application, the expression "flexible blade" means a blade or beam arranged to deform elastically in a principal plane of the clockwork mechanism 1 according to the invention, for example according to a bending movement.

[0043] Each of the flexible blades 14, 15 has a first end connected to the rigid body 13 and a second end connected to a fixed frame 90, for example via a second rigid body 17 of the rocker 10. In particular, in the example of the figure 1 , the rigid body 17 is connected to the fixed frame 90 of the movement via fastening means, for example and without limitation screws.

[0044] In the implementation of the figure 1 The second rigid body 17 is housed corresponding to the periphery of the watch movement. In the embodiment of the figure 1 , the second rigid body 17 has a shape comprising an arc of a circle.

[0045] The rocker 10 also includes a first interaction portion 11 and a second interaction portion 12, the two interaction portions 11, 12 being connected by the rigid body 13.

[0046] The clock mechanism 1 includes a first actuator 50, arranged to interact (directly or indirectly, namely via one or more intermediate elements) with the first interaction portion 11.

[0047] In the implementation of the figure 1 , the first actuator is the drive wheel 50 arranged to rotate during the operation of the watch movement, and which interacts in the illustrated embodiment with the first portion of interaction 11 via the finger 20 which is attached to the drive wheel 50.

[0048] In other embodiments, the first actuator 50 is not necessarily a wheel, but can be a disc, a ring, etc. or any other rigid movable element.

[0049] In other embodiments, the first actuator 50 interacts directly (i.e., it comes into direct contact) with the first interaction portion 11.

[0050] In the example of the figure 1 , the interaction between the first actuator 50 and the first interaction portion 11 allows to drive, for example via a hook 16, the coding wheel 40, which in turn allows to drive a display wheel (or star) not shown, which carries a U disk or unit display ring.

[0051] The clockwork mechanism 1 also includes a second actuator 30, arranged to interact (directly or indirectly) with the second interaction portion 12. In the embodiment of the figure 1 The second actuator is the correction wheel 30 of the disc display or U-ring unit display. Although in the example of the figure 1 the correcting wheel 30 has six teeth, a single tooth would be sufficient to interact with the second interaction portion 12.

[0052] This 30-degree correction wheel in the figure 1 is connected in a known manner to a winding stem T, so that the wearer of the timepiece comprising the watch mechanism 1 can manually correct the display (of the large date in the embodiment of the figure 1 ). In the implementation of the figure 1 , the second actuator 30 interacts directly with the second interaction portion 12.

[0053] In one embodiment, the T-rod corrects the time. In this embodiment, during the first notch of the T-rod, it is also possible to correct the date by advancing the time to midnight. In this case, the second actuator is not the corrector wheel 30, but the T-rod and / or at least one component of the mechanism that connects the T-rod to a display disc or ring. However, this procedure takes longer compared to correction via the corrector wheel 30.

[0054] In other embodiments, the second actuator 30 is not necessarily a wheel, but can be a disc, a ring, etc. or any other rigid movable element.

[0055] In other embodiments, the second actuator 30 interacts indirectly with the second interaction portion 12.

[0056] When the first actuator 50 interacts with the first interaction portion 11, the rigid body 13 rotates (under the action of the deformation of the flexible blades 14, 15) around a virtual axis X external to the clock mechanism 1, so as to drive the coding wheel 40 with a first winding torque with respect to the external virtual axis X. The virtual axis X which is external to the clock mechanism 1 allows to have a desired ratio between a displacement of an input of the clock mechanism 1 (namely, a displacement of the first actuator 50 and / or the second actuator 30) and a displacement of the output of the clock mechanism 1 (namely a displacement of the beak(s) of the (double) hook 16, which allows the drive of the wheel 40).

[0057] When the second actuator 30 interacts with the second interaction portion 12, the rigid body 13 rotates (under the action of the deformation of the flexible blades 14, 15) substantially around this axis X so as to drive the coding wheel 40 with a second winding torque.

[0058] The expression "the rigid body rotates substantially around this X axis" indicates that small tolerances may be accepted, for example tolerances on the order of a few millimeters (e.g. less than or equal to 5 mm) around this X axis.

[0059] Advantageously, the difference between the first cocking torque and the second first cocking torque is ± 50% of the greater of the first and second cocking torques.

[0060] In one embodiment, at least one of the first and second winding torques is between 0.5 N·mm and 15 N·mm, for example between 5 N·mm and 15 N·mm.

[0061] The clockwork mechanism 1 thus allows a part to be driven (the coding wheel 40 in the example of the figure 1 ) via two different inputs, namely via a first actuator 50 or via a second actuator 30.

[0062] In the example of the figure 1 , one input (the first actuator 50) is connected to the operation of the movement comprising the clockwork mechanism 1 according to the invention, and the other (the second actuator 30) is connected to a manual action by the user, for example via the winding stem T.

[0063] These two inputs are not in opposition, but they allow us to obtain essentially the same kinematic result at the output, namely the driving of the coding wheel 40.

[0064] In one embodiment, the rotation of the rigid body 13 caused by the interaction between the first actuator 50 and the first interaction portion 11 prevents the wheel 40 from being driven by an interaction between the second interaction portion 12 and the second actuator 30.

[0065] In other words, when the first actuator 50 drives the rotation of the rigid body 13 to drive the coding wheel 40, even if a user operates the winding rod T to rotate the second actuator 30, the second actuator 30 cannot actuate the second interaction portion 12, even if it comes into contact with it.

[0066] In one embodiment, the rotation of the rigid body 13 caused by the interaction between the second actuator 30 and the second interaction portion 12 prevents the wheel 40 from being driven by an interaction between the first interaction portion 11 and the first actuator 50.

[0067] In other words, when the second actuator 30 drives the rotation of the rigid body 13 in order to drive the coding wheel 40, the first actuator 50 (which rotates continuously during the operation of the watch movement) cannot actuate the first interaction portion 11, even if it comes into contact with it.

[0068] In one embodiment, the rocker 10 includes a drive finger or hook 16, connected to the rigid body 13. In the embodiment of the figure 1 The body of the hook 16 is connected via a flexible blade 160 and an angled portion 19 to the rigid body 13. In other embodiments, the body of the hook is connected via a flexible blade 160 only to the rigid body 13.

[0069] In one embodiment, the flexible blade 160 allows the double hook 16 to pass over a tooth of the wheel 40 without rotating it, then pass back behind that tooth and engage. In one embodiment, the flexible blade 160 has sufficient flexibility to allow the double hook 16 to pass over a tooth of the wheel 40, but also sufficient rigidity to help prevent a double jump by restraining the wheel 40 if it tries to move beyond its equilibrium position.

[0070] In one embodiment, the rigid body 17 includes a portion 170 shaped to receive a portion of the rocker arm, for example, the angled portion 19 of the rocker arm 10, in order to limit its travel and thus prevent excessive winding. Excessive winding could damage the rocker arm 10 in the event of impacts. This embodiment therefore protects the watch mechanism 1 in the event of impacts.

[0071] In one embodiment, the mechanism 1 also includes means for limiting the stroke of the hook 16 and / or the jumper 18, for example and in a non-limiting way a side of the plate.

[0072] In one embodiment, the X axis around which the rigid body 13 rotates is substantially (i.e., with small tolerances, for example tolerances less than or equal to 5 mm) at the intersection of the principal axes A, B of the two flexible blades 14, 15, as illustrated in the figure 1 .

[0073] In one embodiment, the first interaction portion 11 and / or the second interaction portion 12 are protrusions of the rigid body 13, as illustrated in the figure 1 .

[0074] In one embodiment, the second interaction portion 12 is defined by two substantially right sides 121, 122, which form an angle γ. In another embodiment, as illustrated in the figure 1 , one of these sides (side 121 on the figure 1 ) belongs to a straight line G which passes substantially (i.e. with small tolerances, for example tolerances less than or equal to 5 mm) through the X axis. This makes it possible to minimize a deformation of the rocker 10 during its cocking via the corrector wheel 30. In other words, this allows the force causing the rocker to rotate around the virtual axis X to be normal to the radius passing through the X axis: we thus minimize any deformation which does not contribute to the rotation around the X axis, or - in other words - we maximize the lever arm to cock the rocker in the direction of deformation desired.

[0075] In one embodiment, the angle γ is less than or equal to 90°, in order to allow a jump of the corrector wheel 30.

[0076] In one embodiment, the corrector wheel 30 is blocked by known means (such as, for example, a ratchet switch) in the direction of rotation of the rocker arm 10 (the clockwise direction of rotation on the figure 1 ) and it is free in the other direction of rotation (the counterclockwise direction of rotation on the figure 1 ).

[0077] In one embodiment, the rocker 10 includes a rigid connection portion 140, 150 for each flexible blade 14, 15, each flexible blade 14, 15 being connected to the frame 90 via this rigid connection portion 140 respectively 150 and via an additional flexible blade 14' respectively 15'. These two rigid portions 140 and 150 allow for flexible zones of reduced length, and therefore for a more defined kinematic.

[0078] When the clock mechanism 1 is used to drive a wheel with an instantaneous jump, for example the coding wheel 40, it includes a hook 16 arranged to drive the wheel 40 with an instantaneous jump and a jumper 18 to secure the position of the wheel 40 after a jump (instantaneous).

[0079] In the implementation of the figure 1 The jumper 18 has one free end cooperating with the coding wheel 40, as will be seen later, and the other end connected to the frame 90, for example via a flexible blade 180 (and via the rigid body 17 also in the example of the figure 1 ).

[0080] In the case of the figure 1 , the coding wheel 40 interacts in a known way with a display wheel (or star) not shown carrying a disc or ring U with the units digits of a date, namely the digits 0 to 9. In one embodiment, the display wheel comprises ten regularly spaced teeth.

[0081] The coding wheel 40 can be coaxial with another coding wheel 70, for example a tens coding wheel, visible for example on the figure 3B .

[0082] The coding wheel 70 interacts in a known way with another display wheel (or star) 80, visible on the figure 13 and partially on the figure 1 , which is coaxial with the display wheel bearing a U-shaped disc or ring (not shown), and which bears a D-shaped disc or ring. In the example of the figure 1 The disk or ring D carries the tens digits of a date, namely the digits 0 to 3. In one embodiment, a digit can be repeated several times to limit the angle to be traversed between two digits (the digit "2" in the example of the figure 1 ). In one embodiment, this display wheel 80 comprises five regularly spaced teeth, corresponding to the five tens digits.

[0083] Advantageously and as better visible on the figure 2A , the coding wheel 40 comprises N teeth 41 defining N spaces (or background) 42 between one tooth and the next tooth.

[0084] In a preferred embodiment, N is equal to 30, as illustrated in the figure 2A .

[0085] Advantageously, N - 1 spaces 42 are first spaces that have the same width L2 and one (only) space 43 is a second space that has a width L3. This width L3 is twice the width of the N - 1 spaces L2 plus the width L1 of a tooth: L 3 = 2 × L 2 + L 1

[0086] In other words, it is as if the coding wheel 40 had been obtained by starting from a wheel having N + 1 regularly spaced teeth 41 and removing one tooth 41.

[0087] This missing tooth, or in other words this space 43, allows the transition between the number "31" and "01" at the end of a month to be managed with a single wheel, because it allows the digit "1" of the units to be kept during this transition.

[0088] The double hook 16 and the double jumper 18 allow this "incomplete" wheel 40 to rotate thirty-one times per revolution, thus reducing the overall thickness of the mechanism. Indeed, the mechanism comprises a board for synchronizing the tens digit (that of the coding wheel 70) and a board for synchronizing the tens digits (that of the coding wheel 40), without requiring an additional board to advance the assembly. In mechanism 1, the double hook 16 and the double jumper 18 lie on the plane of the coding wheel 40.

[0089] Each tooth 41 includes a protrusion 410 defined by a first side 411 and a second side 412, as visible on the figure 2A and as we will see later.

[0090] In one embodiment, the coding wheel 40 includes a notch 44 corresponding to the space 43, arranged to allow the mounting of at least one display wheel 80 through this coding wheel 40. In one embodiment, the coding wheel 40 also includes a hole 45, visible on the figure 2A , in order to index coding wheel 40 with coding wheel 70.

[0091] Advantageously, the hook 16 of the clock mechanism 1 is a double hook and the jumper 18 is a double jumper. This allows interaction with the coding wheel 40 of the clock mechanism 1, and in particular cooperation with both the first N - 1 spaces 42 which have the same width L 2 and the (only) second space 43 which has a width L 3.

[0092] In this context, the term "double hook" indicates a watch component that includes a first hook (or "beak" or "point") 161 and a second hook 162, visible for example on the figure 3A or on the figures 8 à 10 The first hook 161 and the second hook 162 are separated by a notch or notch 163, so that in the main plane of the double hook 16, one has a lower position relative to the other, e.g., in the view of the figure 3A One hook is located below the other. In one embodiment, the notch 163 and the wheel 40 are arranged such that, when the hook 16 interacts with the spaces 42 of the wheel 40, the first hook 161 is received in a space 42 and the second hook 162 is received in an adjacent space 42, without jumping into the space that receives the first hook 161. In one embodiment, the length of each hook 161, 162 in the direction of the main axis of the double hook 16 is also different, and in particular the first hook 161 is longer than the second hook 162. In one embodiment, the first hook 161 has a different shape from the shape of the second hook 162. As will be seen, this double hook 16 allows interaction with the teeth of the coding wheel 40 of the clockwork mechanism 1.

[0093] In this context, the term "double sautoir" indicates a watch component comprising a first sautoir 181 and a second sautoir 182, the two sautoirs being in series, as can be seen for example on the figure 3A In particular, each jumper is arranged to be received by one of the first N - 1 spaces 42 which have the same width L 2 and the set of the two jumpers 181, 182 is arranged to be received by the second space 43 having the width L 3.

[0094] In one embodiment, the double hook 16 and the double jumper 18 belong to the monolithic rocker 10.

[0095] In one embodiment, the first jumper 181 has a shape and dimensions adapted to be received by one of the N - 1 spaces 42 in order to block the drive of the coding wheel 40.

[0096] In one embodiment, the second sautoir 182 has a shape and dimensions substantially equal to those of the first sautoir 181.

[0097] THE figures 4 à 7 illustrate different positions of the coding wheel 40, in particular to illustrate one embodiment of the operation of the double jumper 18.

[0098] When at least one jump between the first jump 181 and the second jump 182 is received in a first space 42' directly adjacent to the second space 43 (the first jump 181 on the figure 4 ) and the other (the second jumper 182 on the figure 4 ) is received in (a portion) of the second space 43, the position of the coding wheel 40 is blocked by the jumper which is received in space 42', namely by the first jumper 181 in the embodiment of the figure 4 .

[0099] From the position of the figure 4 , the coding wheel 40 advances under the action of the double hook 16 by a jump and is locked in the position of the figure 5 , in which both the first jump 181 and the second jump 182 are received in space 43 (having width L 3 ), as visible on the figure 5 .

[0100] On the figure 5 , the position of the coding wheel 40 is blocked both by the first jumper 181 and by the second jumper 182.

[0101] From the position of the figure 5 , the coding wheel 40 advances under the action of the double hook 16 by a jump and is locked in the position of the figure 6 , in which at least one between the first jump and the second jump 181, 182 (the second jump 182 on the figure 6 ) is received in the other space 42" directly adjacent to the second space 43 and the other jump (the first jump 181 on the figure 6 ) is received in (a portion) of the second space 43.

[0102] On the figure 6 , the position of the coding wheel 40 is blocked by the jumper which is received in space 42" (the second jumper 182 on the figure 6 ).

[0103] From the position of the figure 6 , the coding wheel 40 advances under the action of the double hook 16 by a jump and is locked in the position of the figure 7 , in which at least one between the first jump and the second jump 181, 182 (the first jump 181 on the figure 7 ) is received in space 42" directly adjacent to the second space 43 and the other (the second jump 182 on the figure 7 ) is received in a first space 42.

[0104] On the figure 7 , the position of the coding wheel 40 is blocked by both the first jumper 181 and the second jumper 182.

[0105] In the case where both the first jumper and the second jumper 181, 182 are received in a first space 42 not directly adjacent to the second space 43, the position of the coding wheel 40 is blocked by both the first jumper 181 and the second jumper 182.

[0106] In summary, in order of progress of wheel 40: wheel 40 is held by the first jumper 181 and by the second jumper 182 ( figure 3A ), then wheel 40 is held only by jumper 181 ( figure 4 ), then the wheel 40 is held only by the two jumpers 181, 182, in particular by one of the sides of the first jumper 181 and the other side of the second jumper 182 ( figure 5 ), then wheel 40 is held only by jumper 182 ( figure 6 ), then, wheel 40 is held by the first jumper 181 and by the second jumper 182 ( figure 3A ), etc.

[0107] THE figures 8 à 10 illustrate different positions of the coding wheel 40, in particular to illustrate one embodiment of the operation of the double hook 16.

[0108] In the figure 8 , only the first hook 161 comes into contact with the coding wheel 40, specifically with the second side 412 of a tooth, the second hook 162 not being in contact with the coding wheel 40. As will be seen later, the second side 412 has a certain slope P (visible on the figure 2A ).

[0109] The first hook 161 ascends this slope in the direction illustrated by arrow F on the figure 9 , until the second hook 162 comes into contact with one of the teeth directly adjacent to the one that cooperates with the first hook 161, in particular with its protuberance 410, as visible on the figure 9 . In this case, both the first hook 161 and the second hook 162 can drive the coding wheel 40.

[0110] When there is no longer contact between the first hook 161 and the tooth it drove, as visible on the figure 10 , the coding wheel 40 is always in contact with the second hook 162, which therefore ensures the drive of the coding wheel 40.

[0111] Therefore, the drive of the coding wheel 40 is initially ensured by the first hook 161 only ( figure 8 ) and secondly by the second bracket 162 only ( figure 10 Training using both the first hook 161 and the second hook 162 is also possible ( figure 9 ).

[0112] In general, the drive of the coding wheel 40 is ensured by at least one of the two hooks 161, 162.

[0113] When the first bracket 161 is received in the second space 43, and the second bracket 162 is received in the other (reference 42') of the two spaces directly adjacent to space 43, as seen on the figure 11 , the drive of the coding wheel 40 is ensured only by the second hook 162.

[0114] When both the first bracket 161 and the second bracket 162 are received in the second space 43, as visible on the figure 12 , the drive of the coding wheel 40 is ensured only by the first hook 161.

[0115] In summary, in one implementation method: The coding wheel 40 is driven by at least one of the two hooks 161, 162 (for example, according to the chronology illustrated on the figures 8 à 10 ), when the first bracket 161 is received in a first space 42 and the second bracket 162 is received in a first space 42 adjacent to the one that receives the first bracket, as can be seen for example on the figures 8 to 10, then the coding wheel 40 is driven only by the hook 161, when both the first hook 161 and the second hook 162 are received in the second space 43, as visible on the figure 12 , then the coding wheel 40 is driven solely by the hook 162 (when the first hook 161 is received in the second space 43, and the second hook 162 is received in the space 42' directly adjacent to space 43, as seen on the figure 11 , then we return to the first step, namely, the coding wheel 40 is driven by the two hooks 161 and 162 according to their own chronology, etc.

[0116] In one embodiment, the seesaw 10 also includes a jumper 130, visible for example on the figure 12, to lock the position of the display wheel, which carries the U disk or unit display ring. In one embodiment, this jumper 130 is connected to the fixed frame via a flexible blade 131 (and in the example of the figure 12 , via also the second rigid body 17).

[0117] The coding wheel 40, more clearly visible on the figure 2A , includes teeth 41 which are arranged to advance the display wheel by instantaneous jump. These teeth 41 have a profile comprising a slope P. The display wheel (not shown) has an external diameter, namely the diameter of the circle passing through the apex of the teeth of the display wheel, which is arranged so that at least one tooth of the display wheel comes into contact with this slope P after an instantaneous jump.

[0118] Advantageously, the slope P is arranged so that the angle α between the normal N to the slope P corresponds to the point of contact C between the slope P and a tooth of the display wheel 80 (the star visible on the Figure 2BThe radius R of the coding wheel 40 at the point of contact C is between 5° and 25°, preventing a double jump of the display wheel. This angle α provides a small lever arm for the double jump. This small angle α, minus the friction angle between the coding wheel 40 and the tooth of the display wheel 80 (which is generally between 6° and 11°), leaves virtually no lever arm to perform a double jump. In other words, the slope with this small angle α prevents the display wheel (the star) 80 from rotating the coding wheel 40 due to its inertia. With the coding wheel 40 remaining stationary, the display wheel is locked, thus preventing the double jump of the display wheel 80. Indeed, thanks to the friction between the coding wheel 40 and the tooth of the display wheel 80, the torque transmitted to the coding wheel 40 is almost zero due to its small lever arm (the configuration is close to buttressing).

[0119] In one embodiment, this angle α is within the range between 10° and 22°.

[0120] In one embodiment, the teeth of the display wheel 80 (illustrated on the figure 2B ) include a rounded tip arranged to make contact with the slope P.

[0121] In one embodiment, the angle α varies in the range between 5° and 25°, when the rounded tip of the teeth of the display wheel moves along the slope P.

[0122] In one embodiment, when a tooth of the display wheel comes into contact with a slope P, the jumper 18 cooperates with the coding wheel 40 corresponding to a slope P' of the jumper 18, visible for example on the figures 2 And 4 , in order to further prevent a double jump of the display wheel.

[0123] In one embodiment, the angle β visible on the figure 2AThe angle formed by the slope P' and a radius R' of the coding wheel 40 corresponding to the point (or zone) of contact is between 30° and 50°, for example between 40° and 50°. This angle β gives a large lever arm to the jumper 18.

[0124] Combining angle α with angle β further prevents double jumps of the display wheel.

[0125] As discussed, in one embodiment, the mechanism includes a second coding wheel 70, coaxial with the first coding wheel 40, visible for example on the figure 3A The coding wheel 70 interacts in a known way with another display wheel (or star) 80, visible on the figure 13 and partially visible on the figure 1 , coaxial with the display wheel and bearing a disc or ring D.

[0126] In one embodiment, the clock mechanism 1 includes a jumper 81 for the second display wheel 80, this jumper 81 comprising a profile 810 substantially flat in a principal plane of the mechanism, as seen on the figure 13 .

[0127] Since the jumper 81 for the second display wheel 80 includes a substantially flat profile 810, when a tooth of the display wheel 80 comes into contact with profile 810 and moves along this profile 810, another tooth of the display wheel 80 strikes against a tooth 71 of the tens encoding wheel 70 (visible on the figure 3AThis allows the coding wheel 70 to return to its original position. In other words, the tip of the tooth on the display wheel 80 will encounter a slope based on the same principle as the P slope of the units digit on the coding wheel 40, giving it little leverage to perform a double jump. The slope will then return the tens disc to the correct position.

[0128] In the implementation of the figure 13 The jumper 81 for the second display wheel 80 is connected via a flexible blade 82 to a component 200 comprising a rigid main body 203 and two substantially parallel arms, each arm comprising a rigid body 201, 201' and at least one (two in the example of the figure 13 ) flexible blades 202, 202'. Component 200 also includes a protrusion 204 which interacts with an eccentric E.

[0129] When moving the eccentric E, for example in the direction of arrow F1 on the figure 13The deformations of the flexible blades allow for a (counter-intuitive) rotation of the display wheel 80 in the direction of arrow F 2 on the figure 13 This rotation allows the second display wheel 80 to be aligned with the first display wheel.

[0130] In one embodiment, the jumper 81 and the structure 200 form a monolithic piece, as illustrated in the figure 13 . Reference numbers used in the figures

[0131] [Tables 1] 1 Clockwork mechanism 10 Monolithic rocker 11 First part of the interaction 12 Second part of the interaction 13 First rigid body 14 Flexible blade 14' Additional flexible blade 15 Flexible blade 15' Additional flexible blade 16 Double hook 17 Second rigid body 18 Double sautoir 19 Elbowed portion 20 Finger 30 Second actuator (corrective wheel) 40 Coding wheel (of units) 41 Tooth 42 Space with width L 2 42' Space with width L 2 directly adjacent to space 43 42" Space with width L 2 directly adjacent to space 43 43 Space with width L 3 45 Coding wheel hole 40 50 First actuator (drive wheel) 70 Coding wheel (dozens) 80 Display wheel (or star) 81 Jump 82 Flexible blade 90 Built 121 Side of interaction portion 12 122 Side of interaction portion 12 130 Jump 131 Flexible blade 140 Rigid connection portion of the flexible blade 14 150 Rigid connection portion of the flexible blade 15 160 Flexible blade 161 First hook 162 Second hook 163 Notch or cutout 170 Portion of the second rigid body 17 180 Flexible blade 181 First jump 182 Second jump 200 Structure 201 Rigid body 201' Rigid body 202 Flexible blade 202' Flexible blade 203 Rigid main body 204 Protuberance 410 Protuberance 411 First side of the tooth 412 Second side of the tooth α Corner β Corner γ Corner A Main axis of flexible blade 14 B Main axis of flexible blade 15 C Contact point D tens display disc or ring E Eccentric F Arrow F 1 Arrow F 2 Arrow G Right including side 122 L 1 tooth width 41 L 2 Space width 42 L 3 Space width 43 N Normal to the slope P at the point of contact C P Slope of one tooth of the wheel 40 P' Slope of the jump R, R' Coding wheel radius T Winding stem U Unit display disc or ring X External virtual axis

Claims

1. A timepiece mechanism (1) for driving a part (40), comprising: - a monolithic lever (10) comprising: - a rigid body (13), - at least one flexible blade (14; 15), having a first end connected to the rigid body and a second end connected to a fixed frame (90), - a first interaction portion (11) and a second interaction portion (12), both interaction portions being connected by the rigid body (13), - a first actuator (50), arranged to interact with the first interaction portion (11) to drive the part (40), - a second actuator (30), arranged to interact with the second interaction portion (12) to drive the part (40), wherein - when the first actuator (50) interacts with the first interaction portion (11), the rigid body (13) rotates around a virtual axis (X) external to the timepiece mechanism (1), so as to drive the part (40) with a first winding torque relative to the external virtual axis (X), and - when the second actuator (30) interacts with the second interaction portion (12), the rigid body (13) rotates substantially around said axis (X) so as to drive the part (40) with a second torque.

2. Timepiece mechanism (1) according to claim 1, the interaction between the first actuator (50) and the first interaction portion (11) preventing the driving of the part (40) during an interaction between the second interaction portion (12) and the second actuator (30) and / or the interaction between the second interaction portion (12) and the second actuator (30) preventing the part (40) from being driven during interaction between the first interaction portion (11) and the first actuator (50) .

3. Timepiece mechanism (1) according to one of claims 1 or 2, wherein the part (40) is a coding wheel, for example connected to a large-date display.

4. Timepiece mechanism (1) according to one of claims 1 or 2, the part (40) being a coding wheel connected to a large-date display member and the first actuator (50) being a drive wheel and / or the second actuator (30) being a wheel for correcting the display of the display member .

5. Timepiece mechanism (1) according to one of claims 1 to 4, the monolithic lever (10) comprising a hook (16) for driving the part (40).

6. Timepiece mechanism (1) according to one of claims 1 to 5, comprising two flexible blades (14; 15).

7. Timepiece mechanism (1) according to claim 6, said axis (X) being substantially in correspondence with the intersection of the main directions (A; B) of the two flexible blades (14; 15).

8. Timepiece mechanism (1) according to one of claims 1 to 7, the first interaction portion (11) and / or the second interaction portion (12) being protrusions of the rigid body (13).

9. Timepiece mechanism (1) according to one of claims 1 to 8, the second interaction portion (12) being defined by two substantially straight sides (121, 122), one of these sides belonging to a straight line (G) which passes substantially through the said axis (X).

10. Timepiece mechanism (1) according to one of claims 1 to 9, the rigid body (13) being a first rigid body, the monolithic lever (10) comprising a second rigid body (17), the flexible blade or blades (14; 15) being connected to the frame (90) via the second rigid body (17).

11. Timepiece mechanism (1) according to one of claims 1 to 10, the monolithic lever (10) comprising a rigid connection portion (140; 150) for each flexible blade (14; 15), each flexible blade being connected to the frame (90) via this rigid connection portion (140; 150) and an additional flexible blade (14' ; 15').

12. Timepiece mechanism (1) according to claim 10, the second rigid body (17) comprises a portion 170 having a shape suitable for receiving a portion of the monolithic lever (10), for example an angled portion (19) of the monolithic lever (10), in order to protect the timepiece mechanism (1) in the event of shocks.

13. Timepiece mechanism (1) according to one of claims 1 to 12, the monolithic lever (10) also comprising a neck chain (18) having one end connected to the rigid body (13).

14. Timepiece mechanism (1) according to one of claims 1 to 13, at least one of the first winding torque and the second winding torque being between 0.5 N · mm and 15 N · mm.

15. Timepiece movement comprising the timepiece mechanism (1) according to one of claims 1 to 14 .

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