Gear pulling mechanism

Abstract

The present invention provides a pull mechanism (100) comprising: a pull (20) comprising a pull body (21) comprising a first part (21) comprising a connecting element (21a), such as a pull pin (21a), connected to a control member (10), and a second part (22) comprising a connecting element (21a), such as a pull pin (21a), connected to the control member (10); the first part is attached to the second part and the first part is movable relative to the second part between (i) a first position, in which the connecting element (21a) is engageable with the control member (10), and (ii) a second position, in which the connecting element (21a) is not engageable with the control member (10), and an elastic return member (40), in which the first part is movable relative to the second part between (i) a first position, in which the connecting element (21a) is engageable with the control member (10), and (ii) a second position, in which the connecting element (21a) is not engageable with the control member (10). And a return means designed to return the first part (21) to the first position.

Description

Technical Field

[0001] The present invention relates to a pull-out piece mechanism. The present invention also relates to a watch movement comprising such a pull-out piece mechanism. The present invention also relates to a watch comprising such a watch movement or such a pull-out piece mechanism. The present invention also relates to a method for operating such a watch movement or such a watch. The present invention also relates to a method for assembling and disassembling such a watch movement or such a watch. Background Art

[0002] In a timepiece movement, the control member or control stem is intended to allow the winding, correction or setting of the various functions of the movement. To do this, the control stem cooperates with a setting lever, or more specifically with a pull bar capable of performing a number of functions, such as:

[0003] - fixing the control stem to the movement by means of a connecting element (for example a pin) belonging to the pull rod and engaging in a groove in the stem,

[0004] - the control stem is indexed in a defined axial position by the cooperation between the pull gear and the pull gear spring,

[0005] - Controlling the positions of the components of the mechanism as a function of the axial position of the control stem, so as to configure them so as to allow the activation of different winding, correction or setting functions.

[0006] In order to be able to fit the movement to or remove it from the timepiece middle, the control stem needs to be able to be separated from the movement. To do this, the pull rod is usually disengaged by the watchmaker to the extent that the pull rod is free from the groove of the stem and the latter can be removed from the movement by the watchmaker.

[0007] This action requires moving a pull tab over the thickness of the movement and therefore requires free space above this pull tab, which space cannot therefore be used for other systems of the movement.

[0008] Furthermore, this movement of the lever may be the root cause of various malfunctions, since the lever tends to get caught or ride astride some other component of the mechanism. In such a case, the movement needs to be removed from the case and possibly partially dismantled to reestablish proper operation of the movement.

[0009] To mitigate these problems, various removal or design strategies are often employed, such as:

[0010] - the removal of the control stem needs to be performed in a defined position,

[0011] - Design some components of the mechanism to be thick enough so that the pull tab cannot ride on them.

[0012] These strategies introduce limitations in terms of functionality and thickness.

[0013] Various documents of the prior art describe solutions that enable the control stem to be removed by acting only on the pull-gear connecting element engaged in the stem. However, these solutions do not overcome all the above-mentioned disadvantages. In particular, they do not allow the control stem to spontaneously fix itself in the movement when it is inserted.

[0014] Patent EP1353245B1 discloses a setting mechanism having a pull gear that can be moved in translation, and the pull gear includes a locking piece that is intended to cooperate with a groove of a control handle. The specific feature of this mechanism is that the locking piece is provided with a slot with two wings that can occupy two angular positions in the pull gear. Rotating the locking piece a quarter turn provides a transition from a locked configuration to an unlocked configuration, and vice versa. In the locked configuration, the locking piece is arranged so that the wings engage with the groove of the handle to fix the handle to the pull gear. In the unlocked configuration, the wings are consistent with the outer contour of the handle to allow the handle to be removed.

[0015] Document CH8819A discloses a mechanism comprising a pull bar provided with a screw intended to cooperate with a groove of a control stem. To fix the control stem to the pull bar, the screw is screwed into the pull bar until its end is able to engage with the groove. Conversely, to be able to remove the control stem from the movement, the screw is loosened until its end is free of the groove. Summary of the invention

[0016] The object of the present invention is to provide a pull-out mechanism which is capable of improving the pull-out mechanisms known in the prior art. In particular, the present invention proposes a pull-out mechanism which is capable of limiting the amount of space required for its operation and facilitating its assembly and disassembly operations.

[0017] According to the present invention, the hatch opening mechanism is defined by claim 1 .

[0018] Embodiments of the gear opening mechanism are defined by claims 2 to 10 .

[0019] According to the invention, a timepiece movement is defined by claim 11 .

[0020] According to the invention, a timepiece is defined by claim 12 .

[0021] Embodiments of the assembly method according to the invention are defined by claims 13 and 14 .

[0022] According to the invention, the disassembly method is defined by claim 15 . BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings show by way of example three embodiments of a timepiece according to the invention.

[0024] Figure 1 is a view of a timepiece according to the invention.

[0025] Figure 2 1 is a perspective view of a first embodiment of a tab opening mechanism, wherein a first tab opening member and a second tab opening member are in a first relative position.

[0026] Figure 3 1 is a perspective view of the first embodiment of the tab extension mechanism, wherein the first tab extension member and the second tab extension member are in a second relative position.

[0027] Figure 4 It is a top view of the pull tab according to the first embodiment.

[0028] Figure 5 yes Figure 4 A three-dimensional view of a pull tab, wherein the first pull tab component and the second pull tab component are in a first relative position.

[0029] Figure 6 yes Figure 4 A three-dimensional view of a pull tab, wherein the first pull tab component and the second pull tab component are in a second relative position.

[0030] Figure 7 1 is a perspective view of a second embodiment of the shift opening mechanism, wherein the first shift opening member and the second shift opening member are in a first relative position.

[0031] Figure 8 2 is a perspective view of a second embodiment of the shift opening mechanism, wherein the first shift opening member and the second shift opening member are in a second relative position.

[0032] Fig. 9 It is a top view of the pull tab according to the second embodiment.

[0033] Fig.10 yes Fig. 9 A three-dimensional view of a pull tab, wherein the first pull tab component and the second pull tab component are in a first relative position.

[0034] Fig.11 yes Fig. 9 A three-dimensional view of a pull tab, wherein the first pull tab component and the second pull tab component are in a second relative position.

[0035] Fig.12 1 is a perspective view of a third embodiment of the shift opening mechanism, wherein the first shift opening member and the second shift opening member are in a first relative position.

[0036] Fig.13 1 is a perspective view of a third embodiment of the shift opening mechanism, wherein the first shift opening member and the second shift opening member are in a second relative position.

[0037] Fig.14 and Fig.15 It is a top view of the pull tab according to the third embodiment.

[0038] Fig.16 yes Fig.14 and Fig.15 A three-dimensional view of a pull tab, wherein the first pull tab component and the second pull tab component are in a first relative position.

[0039] Fig.17 yes Fig.14 and Fig.15 A three-dimensional view of a pull tab, wherein the first pull tab component and the second pull tab component are in a second relative position. DETAILED DESCRIPTION

[0040] Refer to the following Figures 1 to 6 A first embodiment of the timepiece 300 will be described in detail.

[0041] Timepiece 300 is, for example, a watch, in particular a wristwatch. Timepiece 300 comprises a timepiece movement 200 intended to be mounted in a timepiece casing or case to protect it from the external environment.

[0042] The timepiece movement 200 is a mechanical movement, in particular an automatic movement, or a hybrid movement, or an electronic movement.

[0043] The timepiece movement 200 includes a lever mechanism 100 .

[0044] In any embodiment, the pull-out mechanism comprises:

[0045] a pull tab, comprising a pull tab body, the pull tab body comprising a first part 21 and a second part 22, the first part 21 comprising a connecting element 21a, such as a pull tab pin, connected to the control member 10, the first part 21 being attached to the second part 22 and the first part 21 being movable relative to the second part 22 between (i) a first position, in which the connecting element 21a is able to engage with the control member 10, and (ii) a second position, in which the connecting element 21a is not able to engage with the control member 10, and

[0046] - an elastic return member designed to return the first component 21 to the first position.

[0047] Pull tab 20 allows mechanism 100 to be configured, depending on the axial position of control member 10 , so as to allow different timepiece functions to be activated, in particular the winding, correction or setting of movement 200 .

[0048] In the following description, one exemplary embodiment of control member 10 is a control stem 10 that is movable in translation along and pivoting about axis A1 within frame 90 of movement 200 .

[0049] The pull lever 20 engages with the control stem 10 via a connecting element 21a intended to engage with a groove 11 machined on the control stem 10. In the following description, the connecting element 10 is a protruding shaping, such as a pin.

[0050] Connecting element 21 a of pull tab 20 also allows control stem 10 to be retained inside movement 200 , or more specifically inside frame 90 , by groove 11 .

[0051] The pull lever 20 is indexed in its position by the pull lever spring 30, usually in two or three defined positions, that is, two defined positions or two of the defined positions are stable positions of the pull lever relative to the frame 90, these stable positions being separated by a series of unstable positions. Therefore, the control stem 10 is also indexed by the pull lever spring 30 via the pull lever along the axis A1 in said two or three positions.

[0052] Therefore, the pull gear 20 can perform in particular:

[0053] a first function, namely the fixing of control stem 10 to movement 200 via connecting element 21 a engaging in groove 11 of the stem, and

[0054] A second function, namely to control the position of at least one component 50 of mechanism 100 as a function of the axial position of control stem 10 , so as to configure this component so as to allow the activation of different winding, correction or setting functions.

[0055] In the embodiment described, each of the functions described is performed by two different parts or components 21, 22 comprised by the pull tab 20. These two parts 21, 22 are movable relative to each other.

[0056] In this particular case, the first part 21 is provided with a connection element 21a capable of engaging with the groove 11 of the stem 10 and capable of performing a first function. The second part 22 is provided with at least one functional portion 22a (for example of the cam surface type) capable of engaging with at least one component 50 (for example, the lever 50) of the mechanism 100 to perform a second function. This functional portion 22a constitutes a control element.

[0057] Thanks to this solution, first part 21 of pull tab 20 is intended to be disengaged by the watchmaker so that, in the second position, it is arranged out of reach of control stem 10 , without second part 22 being stressed or moved relative to frame 90 .

[0058] Thus, when the connecting element 21 a of the first part is arranged in the second position out of reach of the groove 11 of the stem, the pull rod 20 is considered to be in the unlocked configuration. The unlocked configuration therefore allows the stem 10 to be removed from the movement 200 .

[0059] Conversely, when the connecting element 21a of the first part 21 is engaged in the groove 11 of the stem 10 in the first position, the lever 20 is considered to be in the locked configuration. The locked configuration thus allows the lever mechanism 100 to be actuated by the control stem 10 and allows the stem to be retained in the movement 200.

[0060] In the locked configuration, the first part 21 and the second part 22 of the pull bar 20 are fixed to each other so that the pull bar 20 behaves like a one-piece assembly and like a traditional pull bar for activating the different functions of winding, correcting or setting the movement. In other words, in the locked configuration, the first part 21 and the second part 22 of the pull bar 20 are arranged so that they move together in unison when the stem 10 is actuated in different positions.

[0061] Advantageously, the solution is designed so that the pull tab 20 spontaneously reconfigures itself from the unlocked configuration to the locked configuration due to the elastic return of the first part 21 relative to the second part 22. This is caused by the elastic return member 40 designed to return the first part 21 to the first position.

[0062] Likewise advantageously, the elastic return 40 of first part 21 also allows control stem 10 to be inserted into movement 200 by retracting connecting element 21 a. Once connecting element 21 a has reached groove 11, pull tab 20 spontaneously reconfigures itself into the locked configuration under the effect of the elastic return, thus automatically fixing stem 10 to movement 200.

[0063] More specifically, in the first embodiment, the lever 20 pivots on the frame 90 via the pin 23 about an axis A2 perpendicular to the axis A1 of the control stem 10. The pin 23 thus constitutes an element for guiding the lever. The cooperation between the lever 20 and the control stem 10 is achieved in such a way that a translation movement of the stem 10 along the axis A1 causes the lever 20 to rotate about the axis A2.

[0064] The first part 21 is assembled with the second part 22 while allowing movement according to a single translational degree of freedom parallel to the axis A2. This assembly is achieved by means of a pin 23 and a tenon 21b, both fixed to the first part 21 and fitted into a corresponding one of the two holes 22c and 22b formed in the second part 22. Once assembled on the first part 21, the formation of the pin 23 prevents the disassembly of the two parts 21, 22 of the pull rod 20. Thus, a slideway connection is formed by using two guide pins 21b, 23 cooperating with the two holes 22b, 22c.

[0065] The second part 22 comprises a shift pin 24 intended to engage with a shift spring 30 to index the shift pin 20 in three defined angular positions about the axis A2 .

[0066] Furthermore, functional portion 22a of second part 22 is able to cooperate with portion 51 of stem 50 in order to activate different winding, correction or setting functions.

[0067] In order to achieve the unlocked configuration and allow the control stem 10 to be removed from the frame 90, the watchmaker only needs to press the pin 23 axially using a tool to lift the first part 21 (such as Figure 6 ), and disengages the connecting element 21a from the groove 11 of the stem 10. During this action, the second part 22 is advantageously kept in position relative to the frame and is not lifted.

[0068] In this embodiment, the connecting element 21 a is a pin 21 a formed on or attached to the first component 21 .

[0069] The elastic return of the first part 21 from the unlocked configuration to the locked configuration is performed by the pull tab thrust spring 40. The spring 40 provides an axial thrust along the axis A2, which tends to keep the pull tab 20 in the locked configuration. The spring (here in the form of a spring blade) is preferably fixed at one end thereof to the frame 90, for example using a screw.

[0070] In conventional manner, when stem 10 is inserted into movement 200, provision is made for stem 10 to be able to push back pin 21a via a tapered or chamfered portion preceding groove 11 arranged on stem 10. The insertion of stem 10 thus allows the transition of pull tab 20 from the locked configuration to the unlocked configuration to occur automatically, thanks to this forming and thanks to the elastic return of first part 21. As a result, once pin 21a has reached groove 11, it falls spontaneously into the bottom of the groove, thanks to the elastic recovery of spring 40, thereby configuring pull tab 20 again in the locked configuration.

[0071] Refer to the following Figures 7 to 11 The second embodiment of the timepiece 300 will be described in detail.

[0072] Timepiece 300 is, for example, a watch, in particular a wristwatch. Timepiece 300 comprises a timepiece movement 200 intended to be mounted in a timepiece casing or case to protect it from the external environment.

[0073] The timepiece movement 200 is a mechanical movement, in particular an automatic movement, or a hybrid movement, or an electronic movement.

[0074] The timepiece movement 200 comprises a sliding mechanism 100 ′.

[0075] In this second embodiment, the lever 20' is also pivoted on the frame 90, via a pin 23' forming part of said lever, about an axis A2' perpendicular to the axis A1 of the control stem 10. The pin 23' thus forms an element for guiding the lever. The cooperation between the lever 20' and the control stem 10 is achieved in that a translational movement of the stem 10 along the axis A1 causes the lever 20' to rotate about the axis A2'.

[0076] The pull tab 20' comprises a first component 21' and a second component 22' forming the pull tab body. A pin 23' is fixed to the second component 22'.

[0077] The first part 21 'is composed of a flexible body 21c' which is partially arranged in a part of the second part 22' or comprises a flexible part 21c' which is partially arranged in the second part 22' or in a part of the second part 22'. The insertion can be achieved, for example, by a pin having a shoulder 21b' driven into the second part 22' or welded to the second part 22'.

[0078] The free end of the flexible body 21c' or flexible part 21c' comprises a connecting element 21a' in the form of a pin 21a'.

[0079] Thus, the first part 21' and the second part 22' comprise a portion arranged one in the other. The first part and / or the second part comprises a flexible part 21c' or a blade 21c' as an elastic return member 21c' between the second part (22') and the connecting element 21a'.

[0080] The flexible body or flexible part 21c' is designed to deform mainly in a direction parallel to the axis A2' or substantially parallel to the axis A2', so as to disengage the pin 21a' from the groove 11 and configure the pull tab 20' to the unlocked configuration. In this case, the movement of the pin 21a' (particularly based on the length of the flexible part) is compared to a translation parallel to the axis A2'.

[0081] As in the first embodiment, the second part 22 ′ comprises a shift pin 24 ′ intended to engage with a shift spring 30 ′ to index the shift 20 ′ in three defined angular positions.

[0082] In order to give the pin 21a' a certain rigidity when the stem 10 is actuated between the various defined axial positions of the mechanism, at least a portion of the periphery of the pin 21b' matches a complementary shape or profile 22c' machined on the second part 22'. This shape 22c' constitutes a guide element for guiding or retaining the pin 21a' substantially in a plane perpendicular to the axis A1. The cooperation between the shape 22c' and the pin 21a' can be likened to a slide connection. Therefore, only an actuation in a direction substantially parallel to the axis A2' can deform the flexible part 21c' and move the pin 21a'.

[0083] In order to be able to remove the control stem 10 and to bring the lever 20' into the unlocked configuration, provision is made for the watchmaker to be able to press against the flexible part 21c' with a tool 500'. For this purpose, a hole 23a' is advantageously provided, which passes through the pin 23', in particular in the center, or through another area of ​​the second part. This hole allows the tool 500' to pass through.

[0084] As in the other embodiments, here the pull tab 20 ′ advantageously returns spontaneously to the locked configuration thanks to the elastic return of the flexible part 21 c ′ which allows the connecting element 21 a ′ to engage spontaneously in the groove 11 of the stem 10 .

[0085] In this embodiment, unlocking and spontaneous or automatic locking of the pulley 20 ′ upon insertion of the control stem 10 is also ensured.

[0086] Refer to the following Figures 12 to 17 The third embodiment of the timepiece 300 will be described in detail.

[0087] Timepiece 300 is, for example, a watch, in particular a wristwatch. Timepiece 300 comprises a timepiece movement 200 intended to be mounted in a timepiece casing or case to protect it from the external environment.

[0088] The timepiece movement 200 is a mechanical movement, in particular an automatic movement, or a hybrid movement, or an electronic movement.

[0089] The timepiece movement 200 includes a lever mechanism 100 ″.

[0090] In this third embodiment, the pull lever 20 ″ is also pivoted in the frame 90 via a pin 23 ″ about an axis A2 ″ perpendicular to the axis A1 of the control stem 10 . The pin 23 ″ thus constitutes an element for guiding the pull lever.

[0091] The pull tab 20" includes a first component 21" and a second component 22" forming a main body of the pull tab.

[0092] A particular feature of the third embodiment is that the pull gear 20" enters the unlocked configuration by a substantially translational movement of the first component 21" in a plane perpendicular to the axis A2". To this end, the first component includes a first slide 21d", which is intended to engage with a pin having a shoulder 23" driven into the second component 22". In addition, the first component 21" includes a pull gear pin 24", which is intended to engage with a second slide 22b" machined on the second component 22". Of course, the first slide 21d" and the second slide 22b" are preferably oriented in the same direction. In this way, a slide connection is formed comprising two rectangular openings 21d", 22b", which engage with the two pins 23", 24". The pin 24" also allows the pull gear to be shifted by engaging with the pull gear spring 30".

[0093] The first part 21 ″ also comprises a pin 21 a ″ intended to engage with the groove 11 of the stem.

[0094] Therefore, in order to be able to configure the pull tab 20 ″ in the unlocked configuration, provision is made for the pin 21 a ″ to disengage the groove 11 of the stem laterally, ie in a direction orthogonal to the axis A1 , ie substantially perpendicular to the axis A2 ″ and substantially perpendicular to the axis A1 .

[0095] Therefore, in order to be able to remove control stem 10 , the watchmaker can use a tool to move pin 24 ″ and first tab member 21 ″ in the direction defined by first slideway 21 d ″ and second slideway 22 b ″ until the unlocked configuration is obtained.

[0096] In this embodiment, the elastic return of the first part 21 ″ is provided directly by the pull tab spring 30 ″ which applies a force directed in such a way as to keep the pull tab 20 ″ in the locked configuration.

[0097] As in the two previous embodiments, provision is made for inserting control stem 10 into the movement to spontaneously configure pull tab 20 ″ in the unlocked configuration and then, in the same action, to spontaneously configure it in the locked configuration once pin 21 a ″ reaches groove 11 of the stem.

[0098] As demonstrated by the three proposed embodiments, the elastic return of the first part 21, 21', 21" can be ensured in particular by a shift push spring 40, a flexible part 21c' arranged in the shift or a shift indexing spring 30". More generally, however, the elastic return of the first part 21, 21', 21" or the spontaneous configuration of the shift 20, 20', 20" from the unlocked configuration to the locked configuration can be achieved by any elastic means, intrinsic or extrinsic to the shift.

[0099] Of course, thanks to the axial movement of the control stem, the proposed solution is also compatible with pulleys intended to move linearly relative to the frame.

[0100] In the three proposed embodiments, the pull-gear connecting element that cooperates with the groove of the stem is arranged above the groove of the stem. Of course, the part can also be arranged on the side of the groove. Incidentally, this alternative is particularly suitable for the third embodiment. The connecting element that engages with the groove of the stem can also be arranged below the groove of the stem.

[0101] As an alternative to the proposed embodiment in which the relative movement between the first and second parts during the transition from one configuration of the pull gear to another configuration is a translational movement, the relative movement between the first and second parts can be a rotational movement or a combined rotational and translational movement. This variant can be particularly well applied to the third embodiment.

[0102] In any embodiment or variant, the control stem may be replaced by any other interface device capable of being retained inside the timepiece movement by a pull (for example a push button).

[0103] In any embodiment or variation, the pull gear may be, by extension, a lever or a control of a mechanism.

[0104] In any embodiment or variation, the first component or the second component may include:

[0105] - a first element 24; 24'; 24", for indexing the pull lever, and / or

[0106] a first element 23 ; 23 ′; 23 ″ for guiding a sliding lever relative to a frame 90 of a timepiece movement 200 .

[0107] This means that these elements can be arranged on one and the same part of the pulling gear or on several different parts of the pulling gear.

[0108] In any embodiment or variant, the first part and the second part are fixed to each other in the first position. They can be returned toward each other under the action of an elastic return member, which is arranged to block a degree of freedom of the slideway connection connecting the first part and the second part.

[0109] The present invention also relates to a method associated with such a gear pulling mechanism.

[0110] In a first embodiment of a method for assembling control member 10 with a timepiece movement 200 described above or with a timepiece 300 described above (that is to say with a complementary assembly to constitute a timepiece), the method comprises the following actions:

[0111] - inserting the control member 10,

[0112] - As a result of the insertion action, the first component 21; 21'; 21" moves in a first direction from a first position to a second position relative to the second component 22; 22'; 22", and the connecting element 21a; 21a'; 21a" is retracted from the control member 10, and then the first component 21; 21'; 21" moves in a second direction opposite to the first direction relative to the second component 22; 22'; 22", until the element for connecting to the control member 10 engages in the formed part 11 of the control member 10 and until the first component returns to the first position in which the first and second components are fixed together.

[0113] In a second embodiment of the method for assembling control member 10 with a timepiece movement 200 described above or with a timepiece 300 described above (that is to say with a complementary assembly to constitute a timepiece), the method comprises the following actions:

[0114] - the watchmaker moves the first part 21; 21'; 21" relative to the second part 22; 22'; 22" in a first direction from a first position to a second position and keeps the first part in the second position,

[0115] - inserting the control member 10,

[0116] - the first part 21; 21'; 21" returns elastically to the first position in which the first and second parts are fixed together.

[0117] In an embodiment of the method for disassembling or removing control member 10 relative to timepiece movement 200 described above or relative to timepiece 300 described above, the method comprises:

[0118] - moving the first component 21; 21'; 21" relative to the second component 22; 22'; 22" in a first direction and keeping the first component in a second position,

[0119] - removing the control member 10,

[0120] - The first component elastically returns to the first position.

[0121] In an embodiment of the method for operating the above-mentioned watch movement 200 or the above-mentioned watch 300, the method comprises:

[0122] - including the after-sales service phase, in particular the assembly or disassembly phase, of implementing the method described above, and

[0123] - A normal operating phase, in which all manipulations of the control member 10 that cause the first part 21; 21'; 21" to move cause the second part 22; 22'; 22" to move integrally with the first part, as if the first and second parts were made in one piece.

[0124] The above solution provides advantages. Since the pull lever is manufactured in two parts, the functions can be separated. In particular, this solution advantageously allows the fixed part providing the control stem to be separated from the part providing the control of the various parts of the mechanism. Thus, in particular, the known problems associated with the removal of the control stem from the movement can be overcome when the movement is assembled into or removed from the timepiece.

[0125] Furthermore, in order to fix the control stem on the lever, the control stem can be inserted into the movement without any specific action by the watchmaker. In particular, the above solution again advantageously enables the lever to spontaneously fix itself to the control stem when it is inserted into the movement.

[0126] According to the prior art, in a watch movement, the pull lever is usually located in the position next to the control stem, which means that the mechanism of the movement is also constructed to be close to the stem. In other words, the pull lever and the mechanism of the movement are usually arranged at a height similar to the height of the control stem in the thickness direction of the movement. Now, using the proposed solution, it is now possible to keep the first part of the pull lever in the position next to the control stem and offset the second part of the pull lever in the height direction, thereby giving the mechanism position greater freedom within the thickness of the movement. Therefore, by carefully superimposing the two parts of the pull lever, the stem can be offset in height in the thickness of the movement without changing the height position of the mechanism of the movement, or conversely, the mechanism of the movement can be offset in height in the thickness of the movement without changing the height position of the control stem.

Claims

1. A gear pull mechanism (100) for a watch movement (200), characterized in that: The institutions include: a pull tab (20; 20'; 20") comprising a pull tab body (21, 22; 21', 22'; 21", 22"), the pull tab body comprising a first part (21; 21'; 21") and a second part (22; 22'; 22"), the first part comprising a connecting element (21a; 21a'; 21a") connected to a control member (10), such as a pull tab pin (21a; 21a'; 21a"), the first part being attached to the second part and being movable relative to the second part between (i) a first position, in which the connecting element (21a; 21a'; 21a") is able to engage with the control member (10), and (ii) a second position, in which the connecting element (21a; 21a'; 21a") is not able to engage with the control member (10), and - an elastic return member (40; 21c'; 30") designed to return said first component (21; 21'; 21") to said first position.

2. The gear pull mechanism (100) according to claim 1, characterized in that: The second component (22; 22'; 22") comprises a first control element (22a; 22a'; 22a") for controlling a component of a timepiece movement (200), and the first component (21; 21'; 21”) or said second part (22; 22’; 22”) comprises: - a first element (24; 24'; 24”), and / or - a first element (23; 23'; 23") for guiding the tab relative to the frame (90) of the timepiece movement (200).

3. The gear pull mechanism according to claim 1 or 2, characterized in that: The first part (21; 21'; 21") can, in particular can only, move relative to the second part (22; 22'; 22") in a direction or plane perpendicular or substantially perpendicular to the longitudinal axis (A1) of the control member.

4. The gear pull mechanism according to any one of claims 1 to 3, characterized in that: The first and second parts are fixed together in the first position, returning towards each other in particular under the action of the elastic return member (40; 21c'; 30") which is intended to block a degree of freedom of the slide connection connecting the first and second parts.

5. The gear pull mechanism according to claim 4, characterized in that: The axis of the slideway connection is parallel or substantially parallel to the axis (A2; A2') of the first element for guiding the pulley relative to the frame (90).

6. The gear pull mechanism according to claim 4, characterized in that: The axis of the slideway connection is perpendicular or substantially perpendicular to the axis (A2") of the first element for guiding the pulley relative to the frame (90).

7. The gear pull mechanism according to claims 4 to 6, characterized in that: The slideway connection comprises a profile (22c') engaging with a complementary geometric shape belonging to the connection element (21a').

8. The gear pulling mechanism according to any one of claims 4 to 6, characterized in that: The slideway connector includes two guide pins (21b, 23) engaged with two holes (22b, 22c).

9. The gear pull mechanism according to any one of claims 4 to 6, characterized in that: The slideway connector includes two rectangular openings (21d", 22b") that engage with two pins (23", 24").

10. The gear pulling mechanism according to any one of claims 1 to 7, characterized in that: The first component (21') and the second component (22') include a portion arranged one in the other, and the first component and / or the second component include the elastic return member (21c') as a flexible area (21c') or a blade (21c') between the second component (22') and the connecting element (21a').

11. A timepiece movement (200), comprising the lever mechanism (100) according to any one of claims 1 to 10.

12. A timepiece (300), in particular a watch, comprising: - a timepiece movement (200) according to claim 11, and / or - A mechanism (100) according to any one of claims 1 to 10.

13. A method for assembling a control member (10) with a timepiece movement (200) according to claim 11 or a timepiece (300) according to claim 12, the method comprising the following actions: - inserting said control member (10), - As a result of the insertion action, the first component (21; 21'; 21") moves in a first direction from the first position to the second position relative to the second component (22; 22'; 22") and the connecting element (21a; 21a'; 21a") is retracted from the control member (10), and then the first component (21; 21'; 21") moves in a second direction opposite to the first direction relative to the second component (22; 22'; 22") until the connecting element (21a; 21a'; 21a") engages in the formed part (11) of the control member (10) and until the first component returns to the first position in which the first component and the second component are fixed together.

14. A method for assembling a control member (10) with a timepiece movement (200) according to claim 11 or a timepiece (300) according to claim 12, the method comprising the following actions: - moving the first component (21; 21'; 21") relative to the second component (22; 22'; 22") in a first direction from the first position to the second position and keeping the first component in the second position, - inserting said control member (10), - elastically returning said first part (21; 21'; 21") to said first position in which said first part and said second part are fixed together.

15. A method for removing a control member (10) from a timepiece movement (200) according to claim 11 or from a timepiece (300) according to claim 12, the method comprising the following actions: - moving the first part (21; 21'; 21") relative to the second part (22; 22'; 22") in a first direction and maintaining the first part in the second position, - removing the control member (10), - elastically returning said first part (21; 21'; 21") to said first position.

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