Assembly of two clock parts with assembly mechanism

Abstract

The present invention relates to an assembly (1) for a watch movement comprising a first watch component (22), for example, a balance bridge, and a second watch component (30), for example, an actuator of an operating system, wherein the assembly (1) comprises means for assembling the first watch component (22) to the second watch component (30), the assembly means comprising at least one first stud (43) disposed on the first component (22) and at least one first notch (41) disposed on the second component (30), the first notch (41) comprising a first flexible element (48) disposed inside such that the stud (43) is held in the first notch (41) by the pressure of the flexible element (48) on the stud (43).

Description

Technical Field

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

[0002] More specifically, the present invention relates to an assembly of two watch parts for a watch movement.

Background Art

[0003] In most mechanical watches, the parts are assembled to the plate by conventional methods such as press-fitting, screwing, adhesion, or casing.

[0004] The parts are generally attached to the movement by a stack of continuous planes substantially parallel to the plate. These parts include gears, bars, etc.

[0005] Some parts, especially for example the rotating shafts for gears or templates, need to be attached perpendicular to the surface of the plate. However, since these shafts are small, the assembly is easy.

[0006] However, among larger parts, especially when they need to be assembled in a direction orthogonal to the plate, the assembly into the movement can be more complex.

[0007] Furthermore, these parts may need to interact with other parts within the movement, for example by casing or meshing, which makes the assembly difficult.

[0008] Another problem related to the assembly of watch parts is that there may be play between two parts after the assembly is completed.

Summary of the Invention

Problems to be Solved by the Invention

[0009] The present invention aims to eliminate all or part of the aforementioned drawbacks by proposing a means for assembling watch components into a watch movement that avoids the problems described above. [Means for solving the problem]

[0010] For this purpose, the present invention relates to an assembly for a watch movement comprising a first watch component extending in a first main plane, such as a balance bridge, and a second watch component extending in a second main plane, such as an actuator in an operating system, the assembly comprising assembly means for assembling the first watch component to the second watch component.

[0011] The present invention is noteworthy in that the assembly means comprises at least a first blomstud disposed on a first part and at least a first notch disposed on a second part, wherein the first notch comprises a first flexible element disposed therein such that the first blomstud is held in the first notch by a pressing force from the first flexible element to the first blomstud, and the second part is attached to the first part such that the first principal plane and the second principal plane are substantially perpendicular.

[0012] By using this invention, the two parts can be assembled simply by inserting the blomstud into the notch, thus enabling easy and efficient assembly of two watch components. In fact, the elastic element locks and holds the blomstud on the first watch component so that the two parts are joined together without any play between them. The elastic element absorbs any potential play that may occur between the two parts.

[0013] Furthermore, such assemblies facilitate the assembly of clock components perpendicular to each other, for example, perpendicular to a plate.

[0014] According to a particular embodiment of the present invention, the assembly means comprises a second notch to which a second flexible element is attached, and a second bromstud.

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

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

[0017] According to a particular embodiment of the present invention, the first notch has a contour that is open on one side.

[0018] According to a particular embodiment of the present invention, the first notch is located on the rim of the second part, preferably on the corner of the second part, with one open side facing outward.

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

[0020] According to a particular embodiment of the present invention, the spring is joined to the screw body and is positioned around the screw body.

[0021] According to a particular embodiment of the present invention, the spring applies a retaining force to the second watch component that is substantially perpendicular to the contact plane between the first and second components.

[0022] According to a particular embodiment of the present invention, the flexible element is a tab.

[0023] According to a particular embodiment of the present invention, the flexible element is arranged along the inner side wall of each notch.

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

[0025] The present invention further relates to a watch, such as a wristwatch, that incorporates such a watch movement. [Brief explanation of the drawing]

[0026] The objects, advantages and features of the present invention will become apparent by reading the detailed description of some embodiments provided only as non-limiting examples, with reference to the accompanying drawings. [Figure 1] A perspective view of a speed regulating mechanism including an assembly according to an embodiment of the present invention is schematically shown, and the speed regulating mechanism is disposed within a timepiece movement. [Figure 2] A perspective view of a part of the speed regulating mechanism of FIG. 1 is schematically shown without a template receiver. [Figure 3] A top view of a part of the speed regulating mechanism of FIG. 1 is schematically shown without a template receiver and bearings. [Figure 4] A top view of a hairspring on the speed regulating mechanism of FIG. 1 is schematically shown. .. [Figure 5] A side view of a second timepiece component within the assembly, in this case an actuator for an operating system within the speed regulating mechanism of FIG. 1, is schematically shown. [Figure 6] A side view of the assembly in a state where the second timepiece component of FIG. 5 is attached to the first timepiece component, in this case a template receiver, within the assembly is schematically shown. [Figure 7] A perspective view of the assembly is schematically shown. <000…. [Figure 8] A view seen from below the speed regulating mechanism of FIG. 1 is schematically shown. [Figure 9] A perspective view of a second timepiece component in a first position is schematically shown. [Figure 10] A perspective view of a second timepiece component in a second position is schematically shown.

DETAILED DESCRIPTION OF THE INVENTION

[0027] In the following description, a timepiece assembly which is the subject of the present invention includes fastening means for two timepiece components in a speed regulating mechanism. However, such an assembly may relate to other components within a timepiece movement and is not limited to these components or other components of the speed regulating mechanism. […

[0028] Figures 1 to 3 show schematic diagrams of one embodiment of a regulating mechanism 1 designed to be placed in a watch movement that includes a plate (not shown) on which a bed is provided. For example, such a movement is placed in a watch component such as a wristwatch.

[0029] The regulating mechanism 1 comprises an inertial mass (in this case, an annular balance wheel 23), a hairspring 25 as an elastic return element for the inertial mass configured to oscillate the inertial mass, a balance staff 24, and a first clock component 22 (in this case, a balance bridge). The first clock component 22 extends along a first main plane. These elements are stacked from bottom to top in the order of balance wheel 23, hairspring 25, and first clock component 22.

[0030] The balance staff 24 passes through the center of the balance wheel, hairspring 25, and the first clock component 22. The balance staff 24 is held in place by two shock-absorbing bearings 28 located at both ends of the balance staff 24. The first bearing is located on the lower side, and the second bearing 28 is located inside the first clock component 22. The first clock component 22 has a through hole in which the second bearing 28 is held.

[0031] As shown in Figures 3 and 4, the hairspring 25 preferably extends substantially within a single plane. The hairspring 25 comprises a flexible strip 2 having a predetermined rigidity, wound around itself with a number of turns. The inner end 9 of the strip 2 is made of material or assembled to a rigid support 3, commonly called a collet. The rigid support 3 has a substantially triangular shape and is wound around the balance staff 24.

[0032] The hairspring 25 is further provided with means for adjusting its rigidity. For example, the adjustment means can be operated by the user, especially when the regulating mechanism is incorporated into the watch movement.

[0033] The adjustment means includes a flexible element 5 arranged in series with the strip 2, i.e., following the strip 2, preferably on its extension, the flexible element 5 joining the outer end 4 of the strip 2 to the rigid support 17. The flexible element 5 is fixed to the outer end 4 of the strip 2. The flexible element 5 is a separate element from the strip 2.

[0034] The flexible element 5 adds additional rigidity to the strip 2. Preferably, the flexible element 5 has greater rigidity than the strip 2. In this case, the flexible element 5 is arranged in a line with the strip 2. Preferably, the adjusting means and the strip 2 are manufactured integrally and even made of the same material, such as silicon.

[0035] The flexible element 5 on the hairspring 25 comprises a first flexible blade 19 and a movable semi-rigid portion 18, the semi-rigid portion 18 extending from the outer end of the strip 2 and connected to the first flexible blade 19, preferably on the same side as the rigid portion 18. Meanwhile, the first flexible blade 19 is joined to the rigid support 17.

[0036] The rigid support 17 is L-shaped, with the first L-shaped leg 46 serving as a connection point to the first flexible blade 19, and the second L-shaped leg 47 facing away from the first flexible blade 19 so that it can be assembled with a clock movement.

[0037] The means for adjusting the hairspring 25 further comprises a pre-tensioning means 6 for applying a variable force or torque to the flexible element 5. This allows the stiffness of the hairspring to be adjusted. The torque or force can be continuously adjusted by the pre-tensioning means 6. In other words, the torque or force is not limited to a point value. This allows the stiffness of the flexible element 5 to be adjusted with high precision.

[0038] The pre-tensioning means 6 includes a second flexible blade 21 positioned on the opposite side of the rigid part 18 as an extension of the first flexible blade 19.

[0039] The second flexible blade 21 is joined at its other end to a curved lever 14 that wraps around the strip 2. In addition to the second flexible blade 21, the lever 14 is joined to a semi-rigid structure 27 connected to a rigid support 17. The semi-rigid structure 27 partially deforms when the lever 14 is actuated by force or torque.

[0040] A force or torque is applied to the free end 15 of the lever 14. The lever 14 on the pre-tensioning means 6 transmits a force or torque to the flexible element 5 via the second flexible blade 217 and via the semi-rigid structure 27 in order to change the stiffness of the hairspring 25.

[0041] To enable the application of a variable force or torque to the hairspring 25, the speed control mechanism is equipped with a special operating system 20 according to the present invention.

[0042] In the embodiments shown in Figures 1 to 3, the regulating mechanism 1 includes a stud holder 31 with a suspended hairspring stud 34. The stud holder 31 is mechanically joined to the flexible element 5 but does not lock the strip 2. The stud holder 31 surrounds the second bearing 28. For this purpose, the stud holder 31 includes a central arc-shaped portion 38 that is positioned around the second bearing 28 and rests on the first clock component 22.

[0043] The hairspring stud 34 engages with the second arm 47 on the rigid support 17. The pre-tensioning means 6 and the flexible element 5 are thus supported by and suspended from the stud holder 31.

[0044] The hairspring stud 34 is also rigidly coupled to the rigid support 17. In other words, the hairspring stud 34 is fixed to the rigid support 17. The hairspring stud 34 and the hairspring 25 are assembled, for example, by bonding, brazing, soldering, deformation of metallic glass, or mechanical fastening.

[0045] The hairspring stud 34 is movable relative to the first clock component 22. For this purpose, the stud holder 31 is rotatable relative to the first clock component 22 around the second bearing 28. For example, the stud holder 34 can be moved over an angular range of 20° or 10°.

[0046] By moving the hairspring stud 34 relative to the first clock component 22, a guide mark can be set on the regulating mechanism 1.

[0047] The actuation system 20 further includes a second clock component 30, which is an actuator configured to actuate the lever 14. The second clock component 30 extends within a second main plane. The second clock component 30 is mechanically coupled to the pre-tensioning means 6 and is configured to perform at least partially substantially linear motion, preferably linear motion in a plane substantially perpendicular to the plate, in order to actuate the pre-tensioning means 6.

[0048] In other words, at least a portion of the second clock component 30 moves substantially in a straight line, unlike the stud holder 31 which rotates about an axis in a plane substantially parallel to the plate, for example. At least a portion of the second clock component 30 thus moves substantially toward the hairspring 25, either toward or away from the hairspring 25.

[0049] Preferably, the second clock component 30 moves substantially radially relative to the balance wheel 23 and the hairspring 25. Therefore, the straight line along which the second clock component 30 moves is directed toward the center of the balance wheel 23 and the hairspring 25. This also makes it possible to set the rate separately from the setting of the guide marks.

[0050] The second clock component 30 is eccentric with respect to the regulating mechanism, that is, it is mounted away from the center of the regulating mechanism 1 and is joined only to the lever 14 on the adjustment means. Therefore, the second clock component 30 is not directly attached to the regulating mechanism 1, for example, like a stud holder on the bearing 28 of the regulating mechanism 1.

[0051] The speed control mechanism therefore comprises an assembly comprising a first clock component 22 and a second clock component 30 (in this case, an actuator).

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

[0053] In Figures 5 and 6, the second clock component 30 particularly comprises a fixed portion 33 attached to the first clock component 22, a movable portion 37 that is movable relative to the first clock component 22 and joined to the lever 14, and a spring portion 35 formed by a flexible guide that joins the movable portion 37 to the fixed portion 33. The fixed portion 33 and the movable portion 37 are preferably rigid. The fixed portion 33, the spring portion 35, and the movable portion 37 are arranged in the same plane. Therefore, the second clock component 30 is generally flat and extends substantially within a single plane.

[0054] To operate the lever 14, the second clock component 30 is equipped with a hook 39 that engages with the lever 14, and the hook 39 is attached to the movable part 37. The hook 39 surrounds the lever 14 at least partially, but can also be closed around the lever 14.

[0055] The radial displacement of the movable part 37 in the second clock component 30 pulls or pushes the lever 14 radially relative to the hairspring 25. As a result, the movement of the lever applies a greater or lesser force or torque to the flexible element 5, changing the stiffness of the flexible element 5, and consequently changing the overall stiffness of the hairspring 25. The actuation system 20 thus enables setting the rate of the regulating mechanism 1.

[0056] The assembly further includes means for assembling the first clock component 22 with respect to the second clock component 30.

[0057] According to the present invention, the assembly means comprises at least one first bromstud 43 disposed on the first part 22 and at least one first notch 41 disposed on the second part 30.

[0058] In this case, the fixing portion 33 has a substantially square shape and comprises at least one fastening notch 41, preferably two fastening notches 41, 42, each holding a bromstud 43, 44 extending from the first clock component 22. For example, the fastening notches 41, 42 are located on two opposite sides of the diagonal of the fixing portion 33.

[0059] Each notch 41, 42 is fitted with a flexible element 48, 49 (flexible tab in this case) positioned within the notch 41, 42. The flexible elements 48, 49 are positioned along the inner sidewalls of each notch 42, 43. Each tab extends only a short distance along the sidewall. Furthermore, the flexible tabs 48, 49 improve positioning accuracy by preferably creating the same direction of positioning play for the blomstuds 43, 44 within the notches 41, 42.

[0060] When the blomstuds 43 and 44 are inserted into the notches 41 and 42, the flexible elements 48 and 49 deform to accommodate the blomstuds 43 and 44, applying pressure to the blomstuds 43 and 44 and holding them within the notches 41 and 42. Each blomstud 43 and 44 is held within the notches 41 and 42 by the pressure applied to the blomstuds 43 and 44 by the flexible elements 48 and 49.

[0061] The distance between the walls of the flexible elements 48, 49 and the notches 41, 42 is smaller than the diameter of the bromstads 43, 44 in order to press the flexible elements 48, 49 against the bromstads 43, 44. The internal width of the notches 41, 42 is at least equal to the diameter of the bromstads 43, 44.

[0062] In this embodiment, the notches 41 and 42 are through notches extending perpendicular to the plane of the second clock component 30. Therefore, when the bromstuds 43 and 44 are inserted into the notches 41 and 42, they penetrate the second clock component 30.

[0063] The first notch 41 is located at one corner of the fixed portion 33 and is open on one side, allowing it to slide laterally around the first bromstud 43. The second notch 42 is closed, and the second bromstud 44 can be accommodated by insertion into the notches 41 and 42.

[0064] The first open notch 41 is rectangular and is used to align the second clock component 30 with respect to the first clock component 22. The second notch 42 is triangular and is used to center the second clock component 30 with respect to the first clock component 22.

[0065] As shown in the figure, the second clock component 30 is attached to the first clock component 22 so as to be substantially perpendicular to the plate and the first clock component 22. Thus, the second clock component 30 is attached to the rim of the first clock component 22.

[0066] The spring portion 35 is positioned below the fixing portion 33 so as to extend below the level of the first clock component 22.

[0067] The spring section 35 comprises a plurality of translational tables 51, 52, 53, and 54, each having a flexible blade, arranged in series. The translational tables are defined as being in series because the displacements of each translational table are added together at least partially.

[0068] Each translational table 51, 52, 53, 54 comprises substantially parallel pairs of flexible blades 61, 62, 63, 64 and rigid sections 56, 57, 58, 59 to which the pairs of flexible blades 61, 62, 63, 64 are attached.

[0069] The first translational table 51 is positioned below the fixed portion 33 and has a first rigid section 56, the first rigid section 56 being extended to connect it to a second translational table 52 positioned head-to-tail inverted relative to the first translational table 51. The second flexible blade pair 52 is therefore substantially parallel to the first flexible blade pair 51. The second rigid section 57 is substantially parallel to the first rigid section 56 but offset by half the length of the first rigid section 56.

[0070] The second rigid section 57 is also positioned head-to-tail inverted relative to the second translational table 52 and is extended to connect with a third translational table 53 that is substantially parallel to the first translational table 51. The third flexible blade pair 63 is substantially parallel to the first 61 and the second flexible blade pair 62.

[0071] The second clock component 30 includes a fourth translation table 54 positioned opposite the first translation table 5 to the second translation table 52 and the third translation table 53. The fourth translation table 54 is positioned inverted relative to the third translation table 53.

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

[0073] The third translational table 53 and the fourth translational table 54 are joined by an arm 55 that extends from the third section 58 and passes under the first rigid section 56 in the first translational table 51.

[0074] This arrangement of translational tables 51, 52, 53, and 54 allows for substantially linear (preferably linear) displacement of the movable part 37 while maintaining a compact second clock component 30.

[0075] Preferably, the second clock component 30 comprises an even number of translation tables, so that two translation tables positioned inverted head-to-tail positions can cancel out the vertical deflection of the hook 39 caused by each translation table. Thus, the hook 39 maintains substantially the same height even while moving.

[0076] The movable portion 37 extends from the fourth section 59. The movable portion 37 is preferably rigid. In this case, the movable portion 37 is in the form of a bent portion formed by a first segment 66 positioned perpendicular to the fourth section 59 and a second segment 67 perpendicular to the first segment 66.

[0077] The hook 39 on the second clock component 30 is positioned at the end of the second segment 67. At the free end of the first segment 66, the bulge 68 functions as a support, allowing the movable part 37 to move.

[0078] By pressing the bulging portion 68 with some force, the movable portion 37 moves slightly toward the fixed portion 33 due to the deformation of the translational tables 51, 52, 53, and 54 on the spring portion 35.

[0079] This causes the hook 39 to pull the lever 14 somewhat forcefully, activating the means for adjusting the rigidity of the flexible element 5.

[0080] The direction of movement of the movable part 39 in the second clock component 30 and the direction of movement of the lever 14 are substantially perpendicular to the direction of the lever 14.

[0081] Furthermore, the lever 14 is preferably movable within the hook 39 so that it can slide when the lever 14 performs angular motion. For this purpose, the lever 14 has a free end 15 that engages with the hook 39.

[0082] For example, in order to set the guide mark of the speed control mechanism 1, it is necessary to rotate the stud holder 31. As a result, the hairspring 25 rotates together with the stud holder 31, and the free end 15 of the lever 14 slides into the hook 39.

[0083] By using such an operating system 20, the guide mark can be set without changing the position of the second watch component 30 relative to the movement plate. The mechanical connection between the second watch component 30 and the lever 14 is maintained regardless of the position of the lever 14 relative to the second watch component 30.

[0084] This operating system 20 therefore makes it possible to individually set the rate and guide marks while maintaining a fixed predetermined position of the second watch component in the movement, for example, with respect to the plate and balance bridge 22.

[0085] The operating system 20 further includes setting means that engage with the second clock component 30 so that the movable part 37 on the second clock component 30 can be moved.

[0086] As shown in Figures 7 to 10, the setting means includes a pivot control lever 45 positioned to move the movable part 37 on the second clock component 30. The control lever 45 is preferably positioned in a plane substantially perpendicular to the plane of the second clock component 30 and is in contact with the bulge 68 on the movable part 37.

[0087] The control lever 45 includes a swivel arm 69 and a support arm 71 connected to a hub 72 on the swivel control lever 45.

[0088] The support arm 71 engages with the movable part 37 in the second clock component 30, and mechanically moves the movable part 37 by contact. The support arm 71 moves the movable part 37 by slightly pushing the bulge 68 on the movable part 37. The hook 39 thus slightly pulls the lever 14 on the balance spring 25. The control lever 45 is configured to pivot in a plane substantially perpendicular to the plane of the second clock component 30.

[0089] The control lever 45 is configured to be attached to the movement plate via a hub 72, the hub 72 can rotate around a screw body 73, the screw 73 is attached to the plate.

[0090] Therefore, by rotating the control lever 45 around the screw body 73, the movable part 37 moves toward or away from the fixed part 33 by more or less deforming the spring part 35 on the second clock component 30 in order to change the position of the lever 14.

[0091] The setting means also includes a control screw 70 mechanically attached to the swivel arm 69 to control the rotation of the control lever 45. The axis of the control screw 70 is positioned toward the swivel arm 69 in the plane of the control lever 45.

[0092] Therefore, by tightening or loosening the control screw 70, the control lever 45 and the second clock component 30 are activated to move the hook 39, thereby moving the lever 14 on the pre-tensioning means 6.

[0093] The restoring force of the spring portion 35 on the second clock component 30 pushes the control lever 45 back against the control screw 70. In this way, the swivel arm 69 on the control lever 45 is pressed against the control screw 70.

[0094] In Figure 9, the control screw 70, control lever 45, movable part 37 and lever 15 within the second clock component 30 are each in a first position where the hook 39 slightly pulls the lever 15. The dotted line shows the control lever 45, movable part 37 and lever 15 on the actuator 30 in a second position corresponding to Figure 10.

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

[0096] In the second position, the control screw 70 pushes the pivot arm 69 on the control lever 45, causing the support arm 71, which is in contact with the bulge 68, to deform the spring portion 35, thereby pushing the movable portion 37 within the second clock component 30 toward the fixed portion 33. The hook 39 then pulls the lever 14, causing the lever 14 to move centrifugally.

[0097] In the deformed state of the spring portion 35, the flexible blades in the first translational table 51 and the third translational table 53 deform in the same first direction, while the flexible blades in the second translational table 52 and the fourth translational table 54 deform in the same second direction, which is opposite to the first direction.

[0098] The assembly means also includes a spring 74 for pressing the second clock component 30 against the first clock component 22 so that the second clock component 30 does not come off.

[0099] The spring 74 applies a holding force to the second watch component 22 that is substantially perpendicular to the contact plane between the first component 22 and the second watch component 30.

[0100] The spring 74 is positioned around the screw body 73 and grips it. The spring 74 is U-shaped and surrounds the screw body 73. In this case, one leg of the U-shape extends from the fixing portion 33 on the second clock component 30 to which it is attached.

[0101] Naturally, the present invention is not limited to the embodiments of the speed control mechanism described with reference to the drawings, and modifications can be envisioned without departing from the scope of the present invention.

Claims

1. An assembly (1) for a watch movement, comprising a first watch component (22), e.g., a balance bridge, extending in a first main plane, and a second watch component (30), e.g., an actuator in an operating system, extending in a second main plane, wherein the assembly (1) comprises means for assembling the first watch component (22) to the second watch component (30), the assembly means comprising at least a first bromstud (43) disposed on the first component (22) and at least a first notch (41) disposed on the second component (30), the first notch (41) comprising a first flexible element (48) disposed therein, the stud (43) being held within the first notch (41) by a pressing force from the flexible element (48) to the stud (43), and the second component being attached to the first component such that the first main plane and the second main plane are substantially perpendicular to each other.

2. The assembly according to claim 1, characterized in that the assembly means comprises a second notch (42) to which a second flexible element (49) is attached, and a second bromstud (44).

3. The assembly according to claim 2, characterized in that the two bromstuds (43, 44) are positioned on the first component (22) and the two notches (41, 42) are positioned on the second component (30).

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

5. The assembly according to any one of claims 1 to 4, characterized in that the first notch (41) has a contour that is open on one side.

6. The assembly according to claim 5, characterized in that the first notch (41) is located on the rim of the second part (30), preferably on the corner of the second part (30), and the open side faces outward.

7. The assembly according to any one of claims 1 to 6, characterized in that the assembly means comprises a spring (74) for pressing the second clock component (30) against the first clock component (22).

8. The assembly according to claim 7, characterized in that the spring (74) is joined to the screw body (73) and the spring (74) is arranged around the screw body (73).

9. The assembly according to claim 8, characterized in that the spring (74) applies a holding force to the second watch component (30) that is substantially perpendicular to the contact plane between the first component (22) and the second component (30).

10. The assembly according to any one of claims 1 to 9, characterized in that the flexible elements (48, 49) are tabs.

11. The assembly according to any one of claims 1 to 10, characterized in that the flexible elements (48, 49) are arranged along the inner side walls of each notch (42, 43).

12. A clock movement characterized by comprising an assembly according to any one of claims 1 to 11.

13. A watch, such as a wristwatch, characterized by comprising the watch movement described in claim 12.

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