Assembly of two timepiece components with improved assembly means

Abstract

To provide an assembly of two timepiece components with improved assembly means.SOLUTION: An assembly of a horological movement comprises a first timepiece component (22), for example, a plate extending in a first plane, and a second timepiece component (30), for example, an actuator of an actuation system. The assembly (1) comprises means (40) for assembling the first timepiece component (22) to the second timepiece component (30). The assembly means (40) includes means (50) for positioning the second component (30) on the first component (22) in a plane substantially parallel to the first component (22), and means (60) for bearing on the second component (30) to lock the second component (30) on the first component (22).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the field of watchmaking, and more particularly to the field of mechanical watchmaking.

[0002] More specifically, the present invention relates to an assembly of two timekeeping components for a timepiece movement.

Background Art

[0003] In most mechanical watches, these components are assembled together on a plate by known conventional means such as driving, screwing, encapsulation, or more rarely, adhesive bonding or brazing.

[0004] The components are typically mounted within the movement in a stack of successive planes substantially parallel to the plate. The components are, for example, gears, wheels, etc.

[0005] Some components, in particular, for example, the rotating arbor for a gear and the balance for a balance wheel, must be mounted perpendicular to the plane of the plate. However, the rotating arbor and the balance are small in volume, so the assembly is easy.

[0006] However, some of the larger components are more difficult to assemble into the movement, especially when they must be assembled perpendicular to the plate.

[0007] Furthermore, these components may need to be coordinated with other components, for example, by connecting or engaging with other components of the movement, which makes the assembly of these components difficult.

[0008] Another problem associated with the assembly of timekeeping components is the possibility of play existing between the two components after the two components are assembled.

Summary of the Invention

Problems to be Solved by the Invention

[0009] The object of the present invention is to overcome some or all of the above-mentioned drawbacks by proposing means for assembling timepiece components within a timepiece movement, and this assembly avoids the above-mentioned problems.

Means for Solving the Problem

[0010] For this purpose, the present invention relates to an assembly of two timepiece components for a timepiece movement, the assembly comprising a first timepiece component, for example, a plate extending in a first plane, and a second timepiece component, for example, an actuator of an operating system, and the assembly comprises means for assembling the first timepiece component to the second timepiece component.

[0011] The present invention is characterized in that the assembling means comprises means for arranging the second component on the first component in a plane substantially parallel to the first component, and means for supporting the second component in order to lock the second component on the first component in a direction substantially orthogonal to the first component.

[0012] Thanks to the present invention, the second component is easily arranged on the first component and is laterally held by the arranging means, so that an efficient and simplified assembly of the two timepiece components is obtained, and the supporting means is arranged on the second component to lock the second component in a predetermined position and to assemble the second component on the first component.

[0013] These assembling means are simple and effective to implement because the arranging means places the second component in a plane substantially parallel to the plane of the first component, and the supporting means holds the second component in a second direction orthogonal to the plane of the first component.

[0014] Furthermore, such an assembly facilitates the assembly of timepiece components orthogonal to the plate.

[0015] In a particular embodiment of the present invention, the second component extends in a plane substantially orthogonal to the first component.

[0016] According to a specific embodiment of the present invention, the arranging means includes at least one first catch, preferably two catches, arranged on the second component, and at least one hole, preferably two holes, arranged in the first component, and each catch is inserted into the hole to assemble the two components.

[0017] According to a specific embodiment of the present invention, at least one catch can be snap-fitted into the hole.

[0018] According to a specific embodiment of the present invention, the supporting means includes an assembling body arranged on the first component, the second component includes a supporting surface, and the assembling body supports the supporting surface so as to lock the second component in a predetermined position.

[0019] According to a specific embodiment of the present invention, the assembling body includes a rigid tab for supporting the first component.

[0020] According to a specific embodiment of the present invention, the second component has an opening through which the rigid tab can pass.

[0021] According to a specific embodiment of the present invention, the assembling means includes a screw, the assembling body includes a passage for assembling the assembling body to the first component, and the first component includes a screw hole for the screw.

[0022] According to a specific embodiment of the present invention, the second component includes a fixed part intended to be assembled on the first component and a movable part movable relative to the first component.

[0023] According to a specific embodiment of the present invention, the fixed part includes one or more catches.

[0024] According to a specific embodiment of the present invention, the opening is arranged between the fixed part and the movable part.

[0025] According to a specific embodiment of the present invention, the assembly body supports a fixing part.

[0026] The present invention further relates to a timepiece movement comprising such a timepiece assembly.

[0027] The present invention further relates to a timepiece, such as a watch, comprising such a timepiece movement.

[0028] The objects, advantages and features of the present invention will become apparent from the following detailed description of some embodiments given by way of non-limiting example only with reference to the accompanying drawings.

Brief Description of the Drawings

[0029]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0030] In the following description, the subject matter of the present invention, which is a timepiece assembly, comprises means for assembling two timepiece components, of which the first component is a plate of the timepiece movement and the second component is an actuator of means for adjusting the speed regulating member. However, such an assembly may relate to other components of the timepiece movement and is in no way limited to these components or other components of the speed regulating member.

[0031] Figure 1 schematically shows an embodiment of a part of a timepiece movement. The timepiece movement includes a plate having a recess and a speed regulating member 1. Such a movement is arranged, for example, in a timekeeping device such as a watch.

[0032] The speed regulating member 1 includes an inertial mass body, in this case, the balance wheel 23, a hairspring 25 as an elastic restoring element for the inertial mass body configured to vibrate the balance wheel 23, a balance cock, and a balance staff (not shown). These elements are stacked from bottom to top in the following order: the first timepiece component 22, the balance wheel 23, and the hairspring 25.

[0033] The balance cock passes through the centers of the balance wheel and the hairspring 25. The balance cock is held by two shock-resistant supports 28 arranged at both ends of the balance cock. The first support is arranged below the balance staff in the plate 22, and the second support 28 is arranged in the balance staff. The balance staff has a through hole that holds the second support 28 therein.

[0034] As shown in Figure 2, the hairspring 25 preferably extends substantially in one plane. The hairspring 25 includes a flexible strip 2 wound around its own axis a plurality of times, and the strip 2 has a predefined rigidity. The inner end 9 of the strip 2 is integral with or assembled with a rigid support 3 called a hairspring bob. The rigid support 3 is substantially triangular in shape and is fitted around the balance cock.

[0035] The hairspring 25 further includes means for adjusting the rigidity of the hairspring 25. For example, the adjusting means can be actuated by the user, particularly when assembling the speed regulating member into the timepiece movement.

[0036] The adjusting means comprises a flexible element 5, which is arranged in series with the strip 2, i.e., following the strip, preferably as an extension of the strip, and the flexible element 5 connects the outer end 4 of the strip 2 to a rigid support 53. The flexible element 5 is integral with the outer end 4 of the strip 2. The flexible element 5 is a different element from the strip 2.

[0037] The flexible element 5 adds further rigidity to the rigidity of the strip 2. The flexible element 5 is preferably stiffer than the strip 2. In this case, the flexible element 5 is arranged as an extension of the strip 2. Preferably, the adjusting means and the strip 2 are one-piece parts or even made of the same material, for example, silicon.

[0038] In this embodiment of the beard trimmer, the flexible element 5 comprises two flexible parts 15, 16, each connecting the strip 2 to a fixed support 53.

[0039] The two flexible parts 15, 16 are arranged axially symmetrically with respect to each other along the axis A of the beard trimmer. In other words, the two flexible parts 15, 16 are arranged to be symmetric with respect to the axis A.

[0040] On the one hand, the axis A substantially passes through the center O of the beard trimmer, and on the other hand, the axis A preferably passes through the outer end 4 of the strip 2.

[0041] Therefore, the two flexible parts 15, 16 are arranged on the outer periphery of the beard trimmer such that the two flexible parts 15, 16 are arranged at the same distance from the center O of the beard trimmer.

[0042] The two flexible parts 15, 16 are preferably arranged in a "mirror-like" position with respect to each other with respect to the axis A. For this purpose, the two flexible parts 15, 16 are preferably substantially identical.

[0043] The flexible components 15, 16 each comprise a curved flexible vane 55, which preferably forms a semi-circle and extends from the end of the fixed support 53. Each curved flexible vane 55 is also connected to the outer end 4 of the strip 2 by a flexible vane 7.

[0044] The fixed support 53 has a trapezoidal shape that is closed by the flexible vane 7.

[0045] The means for adjusting the beard spring 25 further includes stress applying means 6 for applying a variable force or torque to the flexible element 5. In this way, the rigidity of the beard spring can be adjusted. The torque or force can be continuously adjusted thanks to the stress applying means 6. In other words, the torque or force is not limited to a point value. Therefore, the rigidity of the flexible element 5 can be adjusted with excellent accuracy.

[0046] Preferably, the stress applying means 6 applies substantially the same force or torque to each of the flexible components 15, 16. The direction of the force is preferably substantially symmetric.

[0047] The stress applying means 6 further comprises two levers 14, 26, which each connect a curved vane 55 to the same movable body 19, and the movable body 19 is arranged on the opposite side of the beard spring 25 with respect to the fixed support 53.

[0048] The movable body 19 is, for example, U-shaped, enabling the movable body 19 to engage with an actuator, which is provided with, for example, a hook or a finger, and the hook or finger is inserted into the U-shaped part when the hook or finger is arranged tangentially to the levers 14, 26.

[0049] The variable force or torque is applied to the movable body 19. The variable force or torque is at least partially transmitted via the levers 14, 26 to the curved vanes 55 of the flexible components 15, 16 of the flexible element 5.

[0050] To enable the application of a variable force or torque to the beard spring 25, the speed control member comprises a specific operating system 20.

[0051] In this embodiment, the speed regulating member 1 includes a hanger receiver 31 having a suspension hanger 34. The hanger receiver 31 is mechanically connected to the flexible element 5 but does not block the strip 2. The hanger receiver 31 surrounds the second support 28. For this purpose, the hanger receiver 31 includes a central ring which is arranged around the second support 28 and is placed on a tension receiver (not shown).

[0052] The hanger 34 cooperates with the rigid support 55. In this way, the stress applying means 6 and the flexible element 5 are supported by the hanger receiver 31, and the stress applying means 6 and the flexible element 5 are suspended from the hanger receiver 31.

[0053] Furthermore, the hanger 34 is firmly attached to the rigid support 55. In other words, the hanger 34 is integral with the rigid support 55. The hanger 34 and the hanger spring 25 are assembled, for example, by adhesion, brazing, welding, by deformation of a metal glass, or by mechanical fastening.

[0054] The hanger 34 is movable relative to the first timepiece component 22. For this purpose, the hanger receiver 31 can rotate around the second support 28 relative to the first timepiece component 22. The hanger receiver 31 can be displaced, for example, over an angular range of 20° or even 10°.

[0055] By displacing the hanger 34 relative to the first timepiece component 22, the vibration of the speed regulating member 1 can be adjusted.

[0056] The actuating system 20 further includes a second timepiece component 30 which is an actuator configured to actuate the movable body 19. The second timepiece component 30 is mechanically connected to the stress applying means 6 and is configured to at least partially perform a substantially linear, preferably straight displacement in a plane substantially orthogonal to the plate and to actuate the stress applying means 6.

[0057] In other words, for example, unlike the hairspring holder 31 which undergoes rotation by rotating about an axis in a plane substantially parallel to the plate, at least a part of the second timepiece component 30 moves substantially along a straight line. In this way, at least a part of the second timepiece component 30 moves in a direction substantially towards the hairspring, towards the hairspring 25 or away from the hairspring 25.

[0058] Preferably, the direction of displacement of the second timepiece component 30 is substantially radial with respect to the balance wheel 23 and the hairspring 25. In this way, the straight line along which the second timepiece component 30 moves is directed towards the center of the balance wheel 23 and the hairspring 25. Also, thereby, the speed setting is performed independently of the vibration setting. More specifically, the vibration of the speed regulating member 1 can be adjusted by displacing the hairspring holder 34 relative to the first timepiece component 22.

[0059] The center of the second timepiece component 30 is offset with respect to the speed regulating member. That is, the second timepiece component 30 is assembled at a distance from the center of the speed regulating member 1 and is connected only to the movable body 19 of the adjusting means. Therefore, the second timepiece component 30 is not directly assembled to the speed regulating member 1 such that, for example, the hairspring holder is assembled on the support 28 of the speed regulating member 1.

[0060] In this way, the timepiece movement comprises an assembly 10 including a first timepiece component 22, in this case the plate, and a second timepiece component 30, in this case the actuator of the adjusting means.

[0061] In this embodiment, the first timepiece component 22 is the plate of the timepiece movement and the second timepiece component 30 is the actuator. The second timepiece component 30 is assembled on the first timepiece component 22. The second timepiece component 30 is assembled orthogonally to the first timepiece component 22.

[0062] In FIG. 3, the second timepiece component 30 includes, in particular, a fixed part 33 assembled on the first timepiece component 22, a part 37 that is movable relative to the first timepiece component 22 and is connected to the levers 14, 26, and a spring part 35 formed by a bending support that joins the movable part 37 to the fixed part 33. The fixed part 33 and the movable part 37 are preferably rigid. The fixed part 33, the spring part 35, and the movable part 37 are preferably arranged in the same plane. Accordingly, the second timepiece component 30 is overall flat and extends substantially in one plane.

[0063] To operate the movable body 19, the second timepiece component 30 includes a hook 39 that engages with the U-shaped part of the movable body 19. The hook 39 may be closed or may be partially open.

[0064] When the movable part 37 of the second timepiece component 30 is displaced radially with respect to the hairspring 25, the movable body 19 is pushed and pulled radially with respect to the hairspring 25, thereby operating the levers 14, 26. This changes the rigidity of the flexible element 5. This is because the displacement of the levers 14, 26 rigidly connected to the movable body 18 applies a greater or smaller force or torque on the flexible element 5 to change the rigidity of the flexible element 5, and as a result, the rigidity of the hairspring 25 also changes as a whole. Accordingly, the operating system 20 enables the governor member 1 to be speed-adjustable.

[0065] The fixed part 33 has a substantially elongated shape and includes a bar 63 intended to be assembled on the first component 22.

[0066] As shown, the second timepiece component 30 is assembled on the first timepiece component 22 so as to be substantially orthogonal to the first timepiece component 22.

[0067] The spring part 35 is disposed below the fixed part 33 such that the spring part 35 extends below the level of the first timepiece component 22.

[0068] In this case, the spring part 35 includes two translation stages 51, 52 in which flexible vanes are successively arranged in series. The translation stages 51, 52 are defined as being in series because the displacements of the respective translation stages are at least partially cumulative.

[0069] Each of the translation stages 51, 52 includes a pair of substantially parallel flexible vanes 61, 62 and rigid sections 56, 57 to which the pair of flexible vanes 61, 62 are assembled on top.

[0070] The first translation stage 51 is arranged on the fixed part 33 and includes the first rigid section 56. The first rigid section 56 extends so as to be associated with the second translation stage 52. The second translation stage 52 is arranged head-to-tail, that is, in the opposite direction, with the first translation stage 51. In this way, the second pair of flexible vanes 62 is substantially parallel to the first pair of flexible vanes 61.

[0071] The second rigid section 57 is substantially parallel to the first rigid section 56 but is offset.

[0072] This arrangement of the translation stages 51, 52 enables the movable part 37 to be displaced substantially linearly, preferably linearly, while maintaining the small second timer component 30.

[0073] The two translation stages arranged head-to-tail enable the vertical displacements of the hooks 39 caused by each translation stage to compensate for each other. In this way, the hook 39 remains at substantially the same height during movement.

[0074] The movable part 37 extends from the second section 57. The movable part 37 is preferably rigid. In this case, the movable part 37 has an elbow-shaped part, and the elbow-shaped part is formed by a first section 66 arranged perpendicular to the second section 57 and a second section 67 forming a right angle with the first section 66.

[0075] The hook 39 of the second timepiece component 30 is located at the end of the branch of the second section 67. At the free end of the first section 66, the protrusion 68 acts as a support for moving the movable part 37.

[0076] By pressing the protrusion 68 somewhat strongly, thanks to the deformation of the translation steps 51, 52 of the spring part 35, the movable part 37 moves substantially parallel to the fixed part 33.

[0077] In this way, the hook 39 pulls the levers 14, 26 somewhat strongly via the movable body 19 and activates the means for adjusting the rigidity of the flexible element 5.

[0078] The direction of displacement of the movable part 39 and the movable body 19 of the second timepiece component 30 is substantially orthogonal to the direction or axis O of the movable body 19.

[0079] Furthermore, the movable body 19 is preferably movable within the hook 39, and for this reason, the movable body 19 can slide when the movable body 19 performs an angular displacement within the plane of the hairspring 25.

[0080] For example, in order to make the vibration of the speed regulating member 1 adjustable, the hairspring holder 31 must be rotatable. Accordingly, the hairspring 25 rotates with the hairspring holder 31, and the movable body 19 slides within the hook 39.

[0081] Thanks to such an operating system 20, it is possible to adjust the vibration without particularly having to correct the position of the second timepiece component 30 with respect to the plate of the movement. Regardless of the position of the movable body 19 with respect to the second timepiece component 30, the mechanical connection between the second timepiece component 30 and the movable body 19 is maintained.

[0082] Therefore, this operating system 20 enables the adjustment of the speed and vibration independently of each other while maintaining a certain predetermined position of the second timepiece component within the movement, for example, with respect to the plate and the collet 22.

[0083] The actuation system 20 further comprises adjustment means which cooperate with the second timepiece component 30 and enable displacement of the movable part 37 of the second timepiece component 30.

[0084] As shown in FIG. 1, the adjustment means comprise a pivoting adjustment lever 45 which is arranged to displace the movable part 37 of the second timepiece component 30. The adjustment lever 45 is preferably arranged in a plane substantially perpendicular to the plane of the second timepiece component 30 and comes into contact with the elevation 68 of the movable part 37.

[0085] The adjustment lever 45 has a pivoting arm 69 and a support arm 71 connected to the hub 72 of the pivoting adjustment lever 45.

[0086] The support arm 71 cooperates with the movable part 37 of the second timepiece component 30 and mechanically displaces the movable part 37 by contact. The support arm 71 presses, to a greater or lesser extent, on the elevation 68 of the movable part 37 and moves the elevation 68. Thus, the hook 39 pulls, to a greater or lesser extent, on the movable body 19 and thus on the levers 14, 26 of the hairspring 25. The adjustment lever 45 is configured to pivot in a plane substantially perpendicular to the plane of the second timepiece component 30.

[0087] The adjustment lever 45 is configured to be assembled onto the plate of the movement via the hub 72 and can rotate around a tube 73 made integrally with the plate.

[0088] Thus, by rotating the adjustment lever 45 around the tube 73, the movable part 37 moves towards or away from the fixed part 33 in a plane parallel to the plane of the plate, by a more or less pronounced deformation of the spring part 35 of the second timepiece component 30.

[0089] The adjustment means further include an adjusting screw 70 which is mechanically connected to the pivoting arm 69 in order to adjust the pivoting of the adjustment lever 45. The axis of the adjusting screw 70 is arranged in the plane of the adjustment lever 45 in the direction of the pivoting arm 69.

[0090] The adjusting screw can be operated using an instrument, for example, a screwdriver 24 whose end is shown in FIG. 1.

[0091] Thus, by tightening or loosening the adjusting screw 70, the adjusting lever 45 and the second timer component 30 are actuated, moving the hook 39 and thus the movable body 19 of the stress applying means 6.

[0092] The restoring force of the spring portion 35 of the second timer component 30 presses the adjusting lever 45 against the adjusting screw 70. In this way, the pivot arm 69 of the adjusting lever 45 is held against the adjusting screw 70.

[0093] In the drawing, the adjusting screw 70, the adjusting lever 45, the movable part 37 of the second timer component 30, and the levers 15, 26 are each in a first position where the hook 39 lightly pulls the movable body 19.

[0094] In a second position (not shown), the adjusting screw 70 presses the pivot arm 69 of the adjusting lever 45, and now the support arm 71, which contacts the ridge 68, presses the movable part 37 of the second timer component 30 towards the fixed part 33 due to the deformation of the spring portion 35. In this way, the hook 39 pulls the movable body 19 and thus the levers 14, 26, performing a displacement using centrifugal force. When the spring portion 35 is in a deformed configuration, the flexible vanes of the two translation stages 51, 52 deform in opposite directions.

[0095] As shown, the second timer component 30 is assembled on the first timer component 22 so as to be substantially orthogonal to the first timer component 22.

[0096] The assembly 10 further comprises means 40 for assembling the first timer component 22, in this case a plate, and the second timer component 30, in this case an actuator, thereon.

[0097] According to the present invention, the assembling means 40 includes means 50 for arranging the second component 30 on the first component 22 in a plane substantially parallel to the plane of the first component 22. Therefore, the arranging means 50 prevents the second component 30 from moving on the first component 22 within a plane substantially parallel to the plane of the first component 22.

[0098] In this embodiment, the arranging means 50 includes at least one first catch 41, preferably two catches 41, 42, arranged on the second component 22, and at least one hole 43, preferably two holes 43, 44, arranged within the first component 22. Each catch 41, 42 is inserted into the holes 43, 44 to arrange the second component 30 on the first component 22.

[0099] In this case, the two catches 41, 42 are arranged at two opposite ends of the actuator. In particular, the two catches 41, 42 are arranged at the ends of the fixing part 33 of the second component 30 intended to be assembled on the first timer component 22.

[0100] Preferably, at least one catch 41 can be snap - fastened to the hole 43. This catch 41 is deformable, for example, so that the catch 41 can be inserted into the hole 43. The catch 41 has a protrusion at its end, and the protrusion locks inside the hole 43.

[0101] The catches 41, 42 and the holes 43, 44 are arranged perpendicular to the plane of the plate.

[0102] The assembling means 40 further includes means 60 for supporting the second component 30 in order to lock the second component 30 on the first component 22 in a direction substantially perpendicular to the plane of the first component 22.

[0103] Therefore, the second component 30 is held on the first component 22 so that the second component 30 does not separate from the plate. The second component 30 is thus assembled on the first component 22 and firmly connected to the first component 22.

[0104] The supporting means 60 includes an assembly body 46 that is attached onto the first component 22. The assembling means 40 includes a screw 47, and the assembly body 46 includes a passage 48 for assembling the assembly body 46 to the first component 22. The screw 47 is inserted into the passage 48 to fasten the assembly body 46 to the hole 18 of the first component 22.

[0105] The assembly body 46 includes a peripheral notch 27 that cooperates with a convex portion 29 extending from the first component 22, so as to prevent the assembly body 46 from rotating around the screw 47.

[0106] The assembly body 46 includes a rigid tab 49 that extends to the second component 30 for pressing the first component 22.

[0107] For this purpose, the second component 30 includes a supporting surface 64 on which the rigid tab 49 is placed so as to apply a force for holding the second component 30 on the first component 22.

[0108] The second component 30 includes an opening 58 that allows the rigid tab 49 to pass through the second component 30 at least partially.

[0109] Furthermore, the opening 58 includes a vertical wall, and the rigid tab 49 is held against the vertical wall so that the rigid tab 49 does not rotate together with the assembly body 46.

[0110] In this embodiment, the opening 58 is disposed through the elastic portion 35 of the second component 30, more precisely, between the flexible vanes 61 of the first translation stage 51, so that the rigid tab 49 presses the bar 63 of the fixing portion 33. For example, the vertical wall is disposed at the base of the flexible vanes 61 of the first translation stage 51.

[0111] The present invention is not limited to the embodiments of the speed regulating member described with reference to the drawings, and it goes without saying that alternative forms can be considered without departing from the scope of the present invention.

Explanation of Reference Numerals

[0112] 10 assembled body 18 holes 22 first timer component 30 second timer component 40 assembling means 41 catch 42 catch 43 hole 44 hole 47 screw 48 passage 49 rigid tab 50 arranging means 58 opening 60 supporting means 64 supporting surface

Claims

1. 1. An assembly of two timepiece components, the assembly comprising a first timepiece component (22), e.g. a plate extending in a first plane, and a second timepiece component (30), e.g. an actuator of an actuation system, the assembly (1) comprising means (40) for assembling the first timepiece component (22) to the second timepiece component (30), characterized in that the assembling means (40) comprise means (50) for positioning the second timepiece component (30) on the first component (22) in a plane substantially parallel to the first component (22) and means (60) for bearing the second component (30) in order to lock the second component (30) on the first component (22).

2. 2. The assembly according to claim 1, characterized in that said second component (30) extends in a plane substantially perpendicular to said first component (22).

3. 2. An assembly according to claim 1, characterized in that the positioning means (50) comprises at least one first catch (41), preferably two catches (41, 42), arranged on the second component (30) and at least one hole (43), preferably two holes (43, 44), arranged in the first component (22), such that each of the catches (41, 42) is inserted into one of the holes (43, 44) in order to assemble the two components.

4. 4. An assembly according to claim 3, characterized in that at least one said catch (41) can be snapped into said hole (43).

5. 2. The assembly according to claim 1, characterized in that the bearing means (60) comprises an assembly body (46) arranged on the first component (22), the second component (22) comprising a bearing surface (64), the assembly body (46) bearing against the bearing surface (64) to lock the second component (30) in position.

6. 6. An assembly according to claim 5, characterized in that said assembly body (46) comprises a hard tab (49) pressing against said first component (22).

7. 7. The assembly according to claim 6, characterized in that said second component (30) comprises an opening (58) allowing the passage of said rigid tab (49).

8. 6. The assembly according to claim 5, characterized in that the assembly means (40) comprises a screw (47), the assembly body (46) comprises a passage (48) for assembling the assembly body (46) to the first component (22), and the first component comprises a hole (18) for the screw (47).

9. 4. An assembly according to claim 3, characterized in that the second component (30) comprises a fixed part (33) intended to be assembled on the first component (22) and a mobile part (37) that is movable relative to the first component (22).

10. 10. An assembly according to claim 9, characterized in that the fastening part (33) comprises one or more of said catches (41, 42).

11. 10. An assembly according to claim 7 or 9, characterized in that the opening (58) is arranged between the fixed part (33) and the mobile part (37).

12. 11. An assembly according to claim 10, characterized in that the assembly body (46) supports the fixed part (33).

13. A timekeeping movement comprising an assembly according to claim 1.

14. A timepiece, for example a clock, characterized in that it comprises a timepiece movement according to claim 13.

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