Assembly of two timepiece components, provided with assembly means

Abstract

The invention relates to an assembly for a timepiece movement comprising a first timepiece component (22), for example a balance bridge, and a second timepiece component (30), for example an actuator of an actuation system, the assembly (1) comprising means for assembling the first timepiece component (22) against the second timepiece component (30), the assembly means comprising at least a first stud (43) arranged on the first component (22) and at least a first notch (41) arranged on the second component (30), the first notch (41) comprising a first flexible element (48) arranged inside, such that the stud (43) is held in the first notch (41) by pressing of the flexible element (48) on the stud (43).

Description

ASSEMBLY OF TWO WATCHMAKING COMPONENTS EQUIPPED WITH ASSEMBLY MEANS Technical field of the invention

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

[0002] The invention relates more specifically to an assembly of two watch components for a watch movement. Technological background

[0003] In most mechanical watches, the components are assembled together on a plate by known standard means, such as driving in, screwing in, gluing, or casing up.

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

[0005] Some components must be mounted perpendicular to the plane of the plate, particularly the rotation shafts, for example for the gear wheels, or for the balance wheel. But because the shafts are small, they are easy to assemble.

[0006] However, some larger components are more complex to assemble into the movement, especially if they have to be assembled orthogonally to the plate.

[0007] Additionally, they may need to interact with other movement components, such as by interlocking or meshing, making them difficult to assemble.

[0008] Another problem with assembling watch components is the possible presence of play between the two components once assembled. Summary of the invention

[0009] The aim of the present invention is to overcome all or part of the drawbacks mentioned above by proposing means for assembling a watch component in a watch movement, which avoids the aforementioned problems.

[0010] To this end, the invention relates to an assembly for a watch movement comprising a first watch component, for example a balance bridge, extending in a first main plane, and a second watch component, for example an actuator of an actuation system, extending in a second main plane, the assembly comprising means for assembling the first watch component against the second watch component.

[0011] The invention is remarkable in that the assembly means comprise at least one first pad arranged on the first component and at least one first notch arranged on the second component, the first notch comprising a first flexible element arranged inside, so that the pad is held in the first notch by pressure of the flexible element on the pad, the second component being mounted on the first component, so that the first main plane and the second main plane are substantially perpendicular.

[0012] Thanks to the invention, an efficient and simplified assembly of the two watch components is obtained, since it is sufficient to insert the stud into the notch for the two components to be assembled. Indeed, the elastic element blocks and retains the stud of the first watch component, so that the two components are connected to each other without play between them. Indeed, the elastic element makes it possible to absorb any play that might exist between the two components.

[0013] Furthermore, such an assembly makes it possible to easily assemble a watch component perpendicular to one another, for example perpendicular to the plate.

[0014] According to a particular embodiment of the invention, the assembly means comprise a second notch provided with a second flexible element and a second stud.

[0015] According to a particular embodiment of the invention, the two pads are arranged on the first component, and the two notches are arranged on the second timepiece component.

[0016] According to a particular embodiment of the invention, the second notch comprises a closed contour.

[0017] According to a particular embodiment of the invention, the first notch comprises an outline open on one side.

[0018] According to a particular embodiment of the invention, the first notch is arranged on an edge of the second component, preferably at a corner of the second component, the open side being oriented outwards.

[0019] According to a particular embodiment of the invention, the assembly means comprise a spring for pressing the second component against the first component.

[0020] According to a particular embodiment of the invention, the spring is connected to a screw body, the spring being arranged around the screw body.

[0021] According to a particular embodiment of the invention, the spring exerts a holding force on the second timepiece component substantially orthogonal to the contact plane of the first component and the second component.

[0022] According to a particular embodiment of the invention, the flexible element(s) are tabs.

[0023] According to a particular embodiment of the invention, the flexible element(s) are arranged along an internal side wall of each notch.

[0024] The invention also relates to a clockwork movement comprising such a clockwork assembly.

[0025] The invention also relates to a timepiece, for example a watch, comprising such a timepiece movement. Brief description of the figures

[0026] The aims, advantages and characteristics of the present invention will appear on reading the detailed description of several embodiments given solely as non-limiting examples, with reference to the appended drawings in which: - figure 1 schematically represents a perspective view of a regulating organ comprising an assembly according to an embodiment of the invention, the regulating organ being arranged in a clockwork movement, - figure 2 schematically represents a perspective view of a part of the regulating organ of figure 1, without balance bridge, - figure 3 schematically represents a top view of a part of the regulating organ of figure 1, without balance bridge and without bearing, - figure 4 schematically represents a top view of a spiral spring of the regulating member of figure 1, - figure 5 schematically represents a side view of the second watchmaking component of the assembly, here an actuator of the actuation system of the regulating organ of figure 1, - figure 6 schematically represents a side view of the assembly, the second timepiece component of figure 5 being mounted on the first timepiece component of the assembly, here a balance bridge, - figure 7 schematically represents a perspective view of the assembly, - figure 8 schematically represents a view from below of the regulating member of figure 1, - figure 9 schematically represents a perspective view of the second clockwork component in a first position, and - figure 10 schematically represents a perspective view of the second clockwork component in a second position. Detailed description of the invention

[0027] In the following description, the subject of the invention, which is a timepiece assembly, is provided with means for fixing two timepiece components of a regulating organ. However, such an assembly could relate to other components of a timepiece movement, and it is in no way limited to these components or to other components of a regulating organ.

[0028] Figures 1 to 3 show a schematic representation of an embodiment of a regulating member 1 intended to be arranged in a clockwork movement comprising a plate (not shown in the figures), provided with a housing. Such a movement is for example arranged in a timepiece component, such as a watch.

[0029] The regulating member 1 comprises an inertial mass, here an annular balance 23, a balance spring 25 as an elastic return element of the inertial mass configured to make it oscillate, a balance shaft 24, and a first timepiece component 22, here a balance bridge. The first timepiece component 22 extends along a first main plane. The elements are superimposed from bottom to top in the following order: the balance 23, the balance spring 25, and the first timepiece component 22.

[0030] The balance shaft 24 passes through the center of the balance wheel, the hairspring 25 and the first timepiece component 22. The balance shaft 24 is held by two shock-absorbing bearings 28 arranged at both ends of the balance shaft 24. A first bearing is arranged below, and the second bearing 28 is arranged in the first timepiece component 22. The first timepiece component 22 is provided with a through hole in which the second bearing 28 is held.

[0031] Shown in Figures 3 and 4, the spiral spring 25 preferably extends substantially in one plane. The spiral spring 25 comprises a flexible ribbon 2 wound on itself in several turns, the ribbon 2 having a predefined stiffness. The internal end 9 of the ribbon 2 comes from the same material or is assembled to a rigid support 3, generally called a collet. The rigid support 3 has a substantially triangular shape, and is threaded around the balance shaft 24.

[0032] The spiral spring 25 further comprises means for adjusting its stiffness. For example, the adjustment means can be actuated by a user when the regulating member is mounted in the watch movement.

[0033] The adjustment means comprise a flexible element 5 arranged in series with the ribbon 2, that is to say following the ribbon, preferably in its extension, the flexible element 5 connecting an external end 4 of said ribbon 2 to a rigid support 17. The flexible element 5 is integral with the external end 4 of the ribbon 2. The flexible element 5 is a different element from the ribbon 2.

[0034] The flexible element 5 adds additional stiffness following that of the strip 2. The flexible element 5 preferably has a stiffness greater than that of the strip 2. The flexible element 5 is here arranged in the extension of the strip 2. Preferably, the adjustment means and the strip 2 are in one piece, or even formed from the same material, for example silicon.

[0035] The flexible element 5 of the spiral spring 25 comprises a first flexible blade 19 and a movable semi-rigid part 18, which extends from the external end of the ribbon 2, and is connected to the first flexible blade 19, preferably on the same side of the rigid part 18. The first flexible blade 19 is connected on the other hand to the rigid support 17.

[0036] The rigid support 17 has an L shape, a first branch 46 of the L serving as a connection with the first flexible blade 19, the second branch 47 of the L being oriented on the side opposite the first flexible blade 19 so that it can be assembled to the clockwork movement.

[0037] The spiral spring adjustment means 25 further comprise pre-stressing means 6 for applying a variable force or torque to the flexible element 5. Thus, the stiffness of the spiral spring can be adjusted. The torque or force is continuously adjustable by the pre-stressing means 6. In other words, the torque or force is not restricted to point values. Thus, the stiffness of the flexible element 5 can be adjusted with great precision.

[0038] The prestressing means 6 comprise a secondary flexible blade 21, arranged on an opposite side of the rigid part 18 in the extension of the first flexible blade 19.

[0039] The secondary flexible blade 21 is connected by the other end to a curved lever 14 going around the ribbon 2. The lever 14 is connected, in addition to the secondary flexible blade 21, to a semi-rigid structure 27 linked to the rigid support 17. The semi-rigid structure 27 deforms in part when the lever 14 is actuated by force or torque.

[0040] The force or torque is exerted on the free end 15 of the lever 14. Thus, the lever 14 of the prestressing means 6 transmits the force or torque to the flexible element 5 via the secondary flexible blade 21 and the semi-rigid structure 27, so as to modify the stiffness of the spiral spring 25.

[0041] To be able to apply the variable force or torque to the spiral spring 25, the regulating member comprises a particular actuation system 20 according to the invention.

[0042] In the embodiment of Figures 1 to 3, the regulating member 1 comprises a stud holder 31 provided with a suspended stud 34. The stud holder 31 is mechanically connected to the flexible element 5, but it does not block the ribbon 2. The stud holder 31 surrounds the second bearing 28. For this, the stud holder 31 comprises a central ring 38 arranged around the second bearing 28, and which rests on the first timepiece component 22.

[0043] The stud 34 cooperates with the second branch 47 of the rigid support 17. Thus, the prestressing means 6 and the flexible element 5 are supported by the stud holder 31 from which they are suspended.

[0044] Furthermore, the stud 34 is rigidly connected to the rigid support 17. In other words, the stud 34 is integral with the rigid support 17. The assembly of the stud 34 and the spiral spring 25 is for example carried out by gluing, brazing, welding, by deformation of metallic glass, or by mechanical fixing.

[0045] The stud 34 is movable relative to the first timepiece component 22. To this end, the stud holder 31 is movable in rotation around the second bearing 28 relative to the first timepiece component 22. The piton holder 34 can for example be moved over an angular range of 20°, or even 10°.

[0046] The movement of the stud 34 relative to the first clockwork component 22 makes it possible to adjust the reference of the regulating organ 1.

[0047] The actuation system 20 further comprises a second timepiece component 30, which is an actuator configured to actuate the lever 14. The second timepiece component 30 extends along a second main plane. The second timepiece component 30 is mechanically connected to the prestressing means 6, the second timepiece component 30 being configured to perform at least in part a substantially linear movement, preferably rectilinear in a plane substantially perpendicular to the plate, to actuate the prestressing means 6.

[0048] In other words, at least a portion of the second timepiece component 30 moves substantially along a straight line, unlike, for example, the stud holder 31 which undergoes rotation by turning around an axis, in a plane substantially parallel to the plate. Thus, at least a portion of the second timepiece component 30 moves closer to or further away from the spiral spring 25 in a direction oriented substantially towards the spiral spring.

[0049] Preferably, the direction of movement of the second timepiece component 30 is substantially radial relative to the balance 23 and the balance spring 25. Thus, the straight line along which the second timepiece component 30 moves is directed towards the center of the balance 23 and the balance spring 25. In addition, this makes the adjustment of the rate independent of the adjustment of the marker.

[0050] The second timepiece component 30 is eccentric relative to the regulating member, that is to say mounted at a distance from the center of the regulating member 1, and is only connected to the lever 14 of the adjustment means. Thus, the second timepiece component 30 is not mounted directly on the regulating member 1, like a stud holder on a bearing 28 of the regulating member 1 for example.

[0051] Thus, the regulating organ comprises an assembly comprising the first timepiece component 22, and the second timepiece component 30, here an actuator.

[0052] In this embodiment, the first timepiece component 22 is a balance bridge, and the second timepiece component 30 is an actuator. The second timepiece component 30 is mounted on the first timepiece component 22. The second timepiece component 30 is mounted perpendicular to the first timepiece component 22, such that the first main plane and the second main plane are substantially perpendicular. More specifically, it is assembled on a slice of the first timepiece component 22.

[0053] In Figures 5 and 6, the second timepiece component 30 comprises in particular a fixed part 33 mounted on the first timepiece component 22, a movable part 37 relative to the first timepiece component 22 and connected to the lever 14, as well as a spring part 35, formed of a flexible guide, joining 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 arranged in the same plane. Thus, the second timepiece component 30 is generally flat, and extends substantially in a plane.

[0054] To actuate the lever 14, the second timepiece component 30 comprises a hook 39 engaged with the lever 14, the hook 39 being mounted on the movable part 37. The hook 39 at least partially surrounds the lever 14, but it can also be closed around the lever 14.

[0055] A radial displacement of the movable part 37 of the second timepiece component 30 pulls or pushes the lever 14 radially relative to the spiral spring 25. Thus, the stiffness of the flexible element 5 is modified, because the displacement of the lever exerts a greater or lesser force or torque on the flexible element 5, so that the stiffness of the flexible element 5 varies, and consequently the stiffness of the spiral spring 25 as a whole. actuation system 20 thus makes it possible to adjust the operation of the regulating member 1.

[0056] The assembly further comprises means for assembling the first timepiece component 22 against the second timepiece component 30.

[0057] According to the invention, the assembly means comprise at least one first stud 43 arranged on the first component 22 and at least one first notch 41 arranged on the second component 30.

[0058] The fixed part 33 here has a substantially square shape, and is provided with at least one fixing notch 41, preferably two fixing notches 41, 42, each to receive a stud 43, 44 extending from the first timepiece component 22. The fixing notches 41, 42 are for example arranged on two diagonally opposite sides of the fixed part 33.

[0059] Each notch 41, 42 is provided with a flexible element 48, 49, here a flexible tongue, arranged in the notch 41, 42. The flexible elements 48, 49 are arranged along an internal side wall of each notch 42, 43. Each tongue extends a short distance along the side wall. In addition, the flexible tongues 48, 49 make it possible to improve the positioning accuracy by taking up the positioning clearances of the studs 43, 44 in the notches 41, 42, preferably in the same direction.

[0060] When a stud 43, 44 is inserted into a notch 41, 42, the flexible element 48, 49 deforms to allow it to enter, and exerts pressure on the stud 43, 44 to retain it in the notch 41, 42. Each stud 43, 44 is held in the notch 41, 42 by pressure of the flexible element 48, 49 on the stud 43, 44.

[0061] The distance between the flexible element 48, 49 and the wall of the notch 41, 42 is less than the diameter of the stud 43, 44 to obtain the pressure of the flexible element 48, 49 on the stud 43, 44. The width of the interior of the notch 41, 42 is at least equal to the diameter of the stud 43, 44.

[0062] In this embodiment, the notches 41, 42 pass through perpendicularly to the plane of the second timepiece component 30. Thus, the studs 43, 44 pass through the second timepiece component 30 when they are inserted into the notch 41, 42.

[0063] The first notch 41 is arranged at a corner of the fixed part 33, and is open on the side so that it can slide laterally around the first stud 43. The second notch 42 is closed, and can receive the second stud 44 by insertion into the notches 41, 42.

[0064] The first open notch 41 is rectangular, and is intended to align the second timepiece component 30 with the first timepiece component 22. The second notch 42 is triangular and is intended to center the second timepiece component 30 on the first timepiece component 22.

[0065] As shown in the figures, the second timepiece component 30 is mounted on the first timepiece component 22, so as to be substantially perpendicular to the plate and to the first timepiece component 22. Thus, it is mounted on the edge of the first timepiece component 22.

[0066] The spring part 35 is arranged under the fixed part 33, so that it extends below the level of the first clockwork component 22.

[0067] The spring part 35 here comprises several translation tables 51, 52, 53, 54 with flexible blades arranged in series, one after the other. They are defined as being in series, because the movements of each translation table add up at least in part.

[0068] Each translation table 51, 52, 53, 54 comprises a pair of substantially parallel flexible blades 61, 62, 63, 64 and a rigid section 56, 57, 58, 59 on which the pair of flexible blades 61, 62, 63, 64 is mounted.

[0069] The first translation table 51 is arranged under the fixed part 33 and has a first rigid section 56 extended to associate a second translation table 52 arranged head to tail with respect to the first translation table 51. Thus, the second pair of flexible blades 52 is substantially parallel to the first pair of flexible blades 51. The second rigid section 57 is substantially parallel to the first rigid section 56, but is offset by half the length of the first rigid section 56.

[0070] The second rigid section 57 is also extended to associate a third translation table 53 arranged head to tail with respect to the second translation table 52, and therefore substantially parallel to the first translation table 51. The third pair of flexible blades 63 is substantially parallel to the first 61 and to the second pair of flexible blades 62.

[0071] The second clockwork component 30 comprises a fourth translation table 54 arranged on the other side of the first translation table 5 relative to the second 52 and the third translation table 53. The fourth translation table 54 is arranged head to tail relative to the third translation table 53.

[0072] Thus, the fourth pair of flexible blades 64 is substantially parallel to the other pairs of flexible blades, and the fourth section 59 is arranged substantially in the same direction as the second section 57.

[0073] The third 53 and the fourth translation table 54 are connected by an arm 55 extending from the third section 58, and passing below the first rigid section 56 of the first translation table 51.

[0074] Such an arrangement of translation tables 51, 52, 53, 54 makes it possible to obtain a movement of the mobile part 37, which is substantially linear, preferably rectilinear, while maintaining a second compact clockwork component 30.

[0075] Preferably, the second clockwork component 30 comprises an even number of translation tables, since two translation tables arranged head to tail make it possible to mutually compensate for the deviation. vertical of the hook 39 generated by each. Thus, the hook 39 remains substantially at the same height when it moves.

[0076] The movable part 37 extends from the fourth section 59. The movable part 37 is preferably rigid. The movable part 37 here has the shape of an elbow formed of a first segment 66 arranged perpendicular to the fourth section 59 and a second segment 67 forming a right angle with the first segment 66.

[0077] The hook 39 of the second clockwork component 30 is arranged at the end of the second segment 67. At the free end of the first segment 66, a bulge 68 serves as a support to be able to move the movable part 37.

[0078] By pressing more or less hard on the bulge 68, the mobile part 37 comes closer or less to the fixed part 33, thanks to the deformation of the translation tables 51, 52, 53, 54 of the spring part 35.

[0079] Thus, the hook 39 pulls more or less strongly on the lever 14 to actuate the means for adjusting the stiffness of the flexible element 5.

[0080] The direction of movement of the moving part 39 of the second clockwork component 30 and of the lever 14 is substantially orthogonal to the direction of the lever 14.

[0081] Furthermore, the lever 14 is preferably movable in the hook 39, so as to be able to slide when the lever 14 performs an angular displacement. For this purpose, the lever 14 comprises a free end 15 cooperating with the hook 39.

[0082] For example, to be able to adjust the reference mark of the regulating member 1, it is necessary to be able to rotate the stud holder 31. Consequently, the spiral spring 25 rotates with the stud holder 31, and the free end 5 of the lever 14 slides in the hook 39.

[0083] Thanks to such an actuation system 20, the marker can be adjusted without having to modify the position of the second watch component 30 relative to the movement plate. The mechanical connection between the second timepiece component 30 and lever 14 is maintained regardless of the position of lever 14 relative to second timepiece component 30.

[0084] Thus, this actuation system 20 makes it possible to adjust the rate and the reference mark independently of each other, while having a constant predetermined position of the second timepiece component in the movement, for example relative to the plate and the balance bridge 22.

[0085] The actuation system 20 further comprises adjustment means cooperating with the second timepiece component 30 so as to be able to move the movable part 37 of the second timepiece component 30.

[0086] As shown in Figures 7 to 10, the adjustment means comprise a pivoting control lever 45 arranged to move the movable part 37 of the second timepiece component 30. The control lever 45 is preferably arranged in a plane substantially perpendicular to the plane of the second timepiece component 30, and is in contact with the bulge 68 of the movable part 37.

[0087] The control rocker 45 comprises a pivot arm 69 and a support arm 71 connected to a hub 72 of the pivoting control rocker 45.

[0088] The support arm 71 cooperates with the movable part 37 of the second timepiece component 30 to move it mechanically by contact. The support arm 71 pushes back the bulge 68 of the movable part 37 to a greater or lesser extent to move it. Thus, the hook 39 pulls the lever 14 of the balance spring 25 to a greater or lesser extent. The control lever 45 is configured to pivot in a plane substantially perpendicular to the plane of the second timepiece component 30.

[0089] The control lever 45 is configured to be mounted on the movement plate via the hub 72, which can rotate about a screw body 73, the screw 73 being mounted on the plate.

[0090] Thus, by the rotation of the control lever 45 around the screw body 73, the movable part 37 moves closer to or further away from the fixed part 33 by the more or less pronounced deformation of the spring part 35 of the second clockwork component 30 in order to modify the position of the lever 14.

[0091] The adjustment means also comprise a control screw 70 mechanically connected to the pivot arm 69, in order to control the pivoting of the control rocker 45. The axis of the control screw 70 is arranged in the plane of the control rocker 45 in the direction of the pivot arm 69.

[0092] Thus, by screwing or unscrewing the control screw 70, the control lever 45 and the second clockwork component 30 are actuated to move the hook 39 and therefore the lever 14 of the prestressing means 6.

[0093] The restoring force of the spring portion 35 of the second clockwork component 30 pushes the control lever 45 against the control screw 70. Thus, the pivot arm 69 of the control lever 45 is held against the control screw 70.

[0094] In Figure 9, the control screw 70, the control lever 45, the movable part 37 of the second timepiece component 30, and the lever 15 are each in a first position, in which the hook 39 pulls little on the lever 15. In dotted lines, the control lever 45, the movable part 37 of the actuator 30, and the lever 15 are shown in a second position corresponding to Figure 10.

[0095] In Figure 10, the control screw 70, the control lever 45, the movable part 37 of the second timepiece component 30, and the lever 15 are each in a second position, in which the hook 39 pulls the lever 15 more than in Figure 9.

[0096] In the second position the control screw 70 pushes the pivot arm 69 of the control rocker 45, so that the support arm 71 in contact with the bulge 68, in turn pushes the movable part 37 of the second clockwork component 30 towards the fixed part 33 by deformation of the spring part 35. Thus, the hook 39 pulls on the lever 14, which performs a centrifugal movement.

[0097] In the deformed configuration of the spring part 35, the flexible blades of the first translation table 51 and of the third translation table 53 deform in the same first direction, while the flexible blades of the second translation table 52 and of the fourth translation table 54 deform in the same second direction, the second direction being opposite to the first direction.

[0098] The assembly means further comprise a spring 74 for pressing the second timepiece component 30 against the first timepiece component 22, so that it does not come loose.

[0099] The spring 74 exerts a holding force on the second timepiece component 22, which is substantially orthogonal to the contact plane of the first component 22 and the second timepiece component 30.

[0100] The spring 74 is arranged around a screw body 73 and clamps the screw body 73. The spring 74 has a U shape surrounding the screw body 73. One branch of the U here extends from the fixed part 33 of the second timepiece component 30 to which it is attached.

[0101] Naturally, the invention is not limited to the embodiments of regulating members described with reference to the figures, and variants could be envisaged without departing from the scope of the invention.

Claims

CLAIMS 1. Assembly for a timepiece movement comprising a first timepiece component (22), for example a balance bridge, extending in a first main plane, and a second timepiece component (30), for example an actuator of an actuation system, extending in a second main plane, the assembly (1) comprising means for assembling the first timepiece component (22) against the second timepiece component (30), characterized in that the assembly means comprise at least one first stud (43) arranged on the first component (22) and at least one first notch (41) arranged on the second component (30), the first notch (41) comprising a first flexible element (48) arranged inside, so that the stud (43) is held in the first notch (41) by pressure of the flexible element (48) on the stud (43), the second component being mounted on the first component,so that the first principal plane and the second principal plane are substantially perpendicular., 2. Assembly according to claim 1, characterized in that the assembly means comprise a second notch (42) provided with a second flexible element (49) and a second stud (44).

3. Assembly according to claim 2, characterized in that the two studs (43, 44) are arranged on the first component (22), and the two notches (41, 42) are arranged on the second component (30).

4. Assembly according to claim 2 or 3, characterized in that the second notch (42) comprises a closed contour.

5. Assembly according to any one of the preceding claims, characterized in that the first notch (41) comprises an outline open on one side.

6. Assembly according to claim 5, characterized in that the first notch (41) is arranged on an edge of the second component (30), preferably at a corner of the second component (30), the open side being oriented outwards.

7. Assembly according to any one of the preceding claims, characterized in that the assembly means comprise a spring (74) for pressing the second timepiece component (30) against the first timepiece component (22).

8. Assembly according to claim 7, characterized in that the spring (74) is connected to a screw body (73), the spring (74) being arranged around the screw body (73).

9. Assembly according to claim 8, characterized in that the spring (74) exerts a holding force on the second timepiece component (30) substantially orthogonal to the contact plane of the first component (22) and the second component (30).

10. Assembly according to any one of the preceding claims, characterized in that the flexible element(s) (48, 49) are tabs.

11. Assembly according to any one of the preceding claims, characterized in that the flexible element(s) (48, 49) are arranged along an internal side wall of each notch (42, 43).

12. Clockwork movement, characterized in that it comprises an assembly according to any one of the preceding claims.

13. Timepiece, for example a watch, characterized in that it comprises a timepiece movement according to claim 12.

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