Timepiece assembly
By designing the barrel mandrel with shoulders and the components of the directional grooves in the clock movement, the problem of large size of the mechanical clock movement is solved, and the thickness of the clock movement is reduced, which is suitable for ultra-flat clocks. Production.
Patent Information
- Application Number
- CN202380025893.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-03-08
- Filing Date
- 2023-03-08
- Publication Date
- 2024-12-13
AI Technical Summary
Motors in mechanical watch movements in form of barrels are large in thickness, making it difficult to produce ultra-flat watch movements.
A watch assembly is designed in which the barrel mandrel includes a shoulder, which can be mounted on a thick movement and prevent translation and sliding of the mandrel by oriented grooves on the movement, reducing the thickness of the movement.
The tight installation of the barrel mandrel on the thick movement is realized, reducing the thickness of the watch movement, and is suitable for the production of ultra-flat watch movements.
Smart Images
Figure CN119137546A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a timepiece component. The invention also relates to a timepiece movement comprising such a timepiece component. The invention finally relates to a timepiece comprising such a timepiece component or such a timepiece movement. Background Art
[0002] In a typical mechanical timepiece movement, the motor in the form of a barrel comprises a barrel arbour mounted to pivot at each of its ends in bearings provided on the movement frame. For example, the arbour is mounted between a plate and a barrel stem, a first guide bearing of the barrel arbour being provided in the plate and a second guide bearing of the barrel arbour being provided in the barrel stem.
[0003] Such barrel mountings are bulky in terms of the thickness of the watch movement or in the axial direction of the barrel arbors. This is particularly disadvantageous for producing ultra-flat watch movements.
[0004] Proposal of the present invention
[0005] The object of the present invention is to provide a timepiece assembly that remedies the above-mentioned drawbacks and improves the timepiece assemblies known in the prior art. In particular, the present invention proposes a simple timepiece assembly that can be disassembled and allows the barrel arbors to be mounted on a rough movement by minimizing the bulk in the thickness direction of the timepiece movement. Summary of the invention
[0006] The invention relates to a timepiece assembly having an arbour, in particular a barrel arbour, on a rough movement, in particular a rod or a plate. The arbour comprises a first axis and a shoulder extending at least in a direction radial to the first axis. The rough movement comprises a groove oriented along a second axis. The arbour and the rough movement are configured and / or arranged such that:
[0007] - preventing the arbour from translating relative to the rough movement along the first axis, and
[0008] - enabling the spindle to slide in translation in the groove during installation along a second axis at right angles to the first axis.
[0009] Different embodiments of the assembly are defined by claims 2 to 6 .
[0010] According to the invention, the timepiece movement is defined by claim 7 .
[0011] Different embodiments of the timepiece movement are defined by claims 8 to 11 .
[0012] According to the invention, a timepiece is defined by claim 12 .
[0013] According to the invention, the mounting method is defined by claims 13 and 14 .
[0014] The method is performed in the manner defined in claim 15 .
[0015] According to the invention, the timepiece is defined by claim 16 . BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The objects, characteristics and advantages of the invention are explained in detail in the following description of particular embodiments given in a non-limiting manner with respect to the accompanying drawings.
[0017] Figure 1 is a view of an embodiment of a timepiece according to the invention, presenting in greater detail, in a perspective cross section, an embodiment of a timepiece movement according to the invention.
[0018] Figure 2 is a perspective view of an embodiment of a timepiece movement according to the invention, with the barrel ratchet, barrel arbor and barrel spring removed.
[0019] Figure 3 is a partial cross-sectional view of an embodiment of a timepiece according to the invention, the cross section being taken at the barrel arbor.
[0020] Figure 4 is a perspective view of the ratchet-barrel arbor assembly assembled together.
[0021] Figure 5 It is a perspective view of an embodiment of a timepiece movement according to the present invention. DETAILED DESCRIPTION
[0022] Refer to the following Figure 1 6 to 6, an embodiment of a timepiece 200 is described in detail. The timepiece 200 is, for example, a watch, in particular a wristwatch. The timepiece 200 comprises a timepiece movement 100, which is intended to be mounted in a timepiece case or housing to protect it from the external environment. The timepiece movement 100 may be a mechanical movement, in particular an automatic movement.
[0023] The watch movement 100 comprises:
[0024] - a frame 90, in particular a rough movement or plate 91, and
[0025] The barrel 80 is mounted on the frame 90 .
[0026] The timepiece movement 100 also comprises a timepiece assembly 1 of a barrel arbour 8 on a frame 90, in particular on a rough movement 91, in particular on a plate 91. This assembly makes it possible to connect the barrel to the frame, in particular to mechanically connect the barrel arbour 81 and the wheel 84, in particular the ratchet, to the frame. The mechanical connection is preferably a pivot connection from the arbour 81 to the rough movement 91, in particular a pivot connection about an axis A80 constituting the axis of the arbour 81.
[0027] In the embodiment described, plate 91 also constitutes the bottom cover, or even the middle piece - bottom cover. Thus, bottom cover and plate can be made in the same single piece. The watch case or housing is advantageously closed by a glass 10.
[0028] Barrel 80 comprises:
[0029] - barrel arbour 81,
[0030] - a barrel toothing 85 or crown pivoting on the frame or rough movement 91,
[0031] - a gear 83 or ratchet 83 fixed to the spindle 81, and
[0032] A power spring (not shown) mechanically connecting the toothed ring 85 to the core 812 formed by the outer surface of the spindle 81 .
[0033] Preferably, the gear 83 is fixed to the spindle 81 using screws 84. More precisely, the gear 83 and the spindle 81 preferably have complementary shapes that nest in one another by translation along the axis A80 and are maintained in nested configuration by screws 84.
[0034] In the illustrated embodiment, the power spring recess is defined by:
[0035] - core 812,
[0036] - Ring gear 85,
[0037] - Rough movement 91, and
[0038] -Gear 83.
[0039] Advantageously, the diameter of the gear wheel 83 is greater than the diameter of the toothed ring 85 or the toothed crown 85 .
[0040] Preferably, the toothed ring 85 is guided in rotation on the frame 90 (especially on the rough movement 91 or on a rod added to the rough movement 91) by rollers 70, especially rollers made of rubies. For this purpose, preferably three rollers 70 are used. A single roller 70 is shown in the figures. The roller is arranged to roll on the cylindrical peripheral surface 851 of the crown.
[0041] The roller can pivot about an axis 71 driven into the rough movement. Preferably, the movement comprises a pin 98 which can be adjusted in a position parallel to the first axis A80. The pin 98 is preferably arranged to limit the oscillation of the gear 83 on the first axis A80 by contact with the gear 83 and to keep the gear 83 parallel to the rough movement 91 and the glass 10 even in the presence of forces acting on the teeth of the gear 83.
[0042] To allow arbour 81 to be mechanically connected to rough movement 91:
[0043] - the spindle 81 comprises a shoulder 82 extending at least in a radial direction relative to the first axis A80, and
[0044] - the rough movement 91 comprises a groove 92 oriented on the second axis A90,
[0045] The arbors and rough movements are configured and / or arranged to:
[0046] - preventing the arbour from moving in translation relative to the rough movement on the first axis A80, and
[0047] - Allows the spindle to slide in translation in the groove along a second axis A90 at right angles to the first axis.
[0048] exist Figure 3 As can be seen in the embodiment shown, the barrel arbour has, at one of its ends 813, a groove 814, one side 82 of which forms a shoulder 82. The groove may be constituted by an assembly of several parts. The groove 92 produced in the rough movement 91 is, for its part, a groove of T-section open only at one of its ends. This groove is produced on the second axis A90. The side 96 of the groove is arranged to cooperate with the shoulder 82. By fitting in contact with each other, it can be noted that, once the arbour 81 is engaged in the groove 92, the side 96 and the shoulder 82 prevent any translational displacement of the arbour 81 along the first axis A80. Preferably, the arbour can rotate freely in the groove about the axis A80, since the arbour has a revolving geometry at least at its end 813 and / or the groove has a revolving geometry at its non-open end.
[0049] The fact that the groove is open at one of its ends allows the introduction of the arbour 81 into the groove by displacing it in the direction of the second axis A90. Obviously, such displacement is only possible if the wheel 83 is removed from the end 811 of the arbour 81.
[0050] In the embodiment described and illustrated, shoulder 82 and side 96 each form a plane at right angles to first axis A80 , these two planes acting on one another to limit the translation of arbour 81 relative to rough movement 91 on axis A80 .
[0051] In alternative embodiments, surface 82 may be tapered and may mate with a tapered surface in the groove and / or a surface in an inclined plane in the groove.
[0052] Advantageously, the rough movement 91 may comprise a bushing 93 nailed into a hole 94 (in particular a through hole 94) formed in the main part of the rough movement 91 (i.e. in the rest of the rough movement 91). Preferably, the bushing 93 is glued in the hole 94, in particular in order to produce a tightly sealed connection. Therefore, the rough movement 91 preferably comprises a bushing 93 nailed into the main part 91. This makes it possible to produce the main part of the rough movement 91 and the groove 92, which is produced in the bushing 93, in different materials.
[0053] In a variant that is not shown, the hole 94 may be delimited by an excess thickness formed on the main part of the rough movement 91 (or on the rest of the rough movement 91). This excess thickness is advantageously local and / or is locally arranged around the hole 94. Whatever the variant, the hole and the bushing may be cylindrical or polygonal overall.
[0054] In order to mount barrel 80 on frame 90 or on rough movement 91 , the starting point is a configuration in which the components of the movement without the barrel are in place.
[0055] The crown 85 is then placed in place to obtain Figure 2 structure.
[0056] The spindle 81 is then revealed and caused to slide in translation in the groove 92 along the second axis A90 .
[0057] The above two steps can be performed in any order.
[0058] The power spring is placed in place in the recess by connecting it to the core 812 and the crown 85 .
[0059] Finally, the gear 83 is put in place on the spindle 81 and the two parts are fixed to each other using screws 84.
[0060] As an alternative to what has been described previously, the arbour and the spring may first be attached to one another and the appropriately formed assembly may then be mounted in a crown previously mounted on rough movement 91 or on frame 90 .
[0061] The invention also relates to such a mounting method and to the assembly obtained by implementing the method.
[0062] Gear 83 or ratchet 83 is intended to mesh with an intermediate wheel 89, for example an intermediate wheel of a kinematic chain of an assembly of a watch. Preferably, this intermediate wheel is arranged to mesh with gear 83 or ratchet 83 in a position such that the action applied to gear 83 or ratchet 83 by intermediate wheel 89 prevents the translational movement of arbour 81 in direction A90 of groove 92. In particular, said action may tend to push arbour 81 in translation towards the bottom of groove 92.
[0063] With the aid of the above solution, the thickness of the watch is minimized. The thickness of the watch can be decomposed (without considering the functional clearance) as the sum of the following thicknesses:
[0064] - the thickness of the rough movement 91, in particular the thickness of the rough movement bottom cover,
[0065] - thickness of the spring recess,
[0066] - the thickness of the gear 83 or ratchet 83,
[0067] -Thickness of the glass 10 .
[0068] In the above description, it has been described that the assembly is applied to mounting a barrel arbour on a rough movement (particularly on a plate). However, the assembly can be used to mount any type of watch arbour on a rough movement, or even more generally on a watch component.
[0069] Whatever the embodiment and / or variant, arbor 81, in particular barrel arbor, is preferably mounted cantilevered, that is to say mechanically connected only at one of its ends, via a bearing or more generally via a guide, to frame 90 or rough movement 91. This makes it possible in particular to obtain an assembly having a small volume in the longitudinal direction relative to the arbor or along axis A80.
[0070] Whatever the embodiment and / or variant, arbor 81, in particular the barrel arbor, is preferably mounted on rough movement 91 or on frame 90 without passing through the latter in a longitudinal direction relative to the arbor or in the direction of axis A80. This makes it possible in particular to ensure the tightness of the seal between the two spaces delimited by the faces of rough movement 91 or of frame 90 extending at least substantially at right angles to the arbor or axis A80.
[0071] Whatever the embodiment and / or variant, the toothed ring 85 is preferably not guided in rotation on the spindle 81. This makes it possible to dispense with mechanical elements connecting the toothed ring to the spindle and thus obtain an assembly with a small volume in the longitudinal direction relative to the spindle or along the axis A80.
Claims
1. A timepiece assembly (1) comprising an arbour (81), in particular a barrel arbour, on a rough movement (91), in particular on a rod or plate (91), - said spindle (81) comprises a first axis (A80) and a shoulder (82) extending at least in a radial direction relative to said first axis (A80), and - the rough movement (91) comprises a groove (92) oriented along a second axis (A90), The mandrel and the rough movement are configured and / or arranged such that: - preventing said arbour from translating relative to said rough movement along said first axis, and - enabling said spindle to slide in translation in said groove during mounting along said second axis (A90) at right angles to said first axis.
2. Timepiece assembly (1) according to claim 1, wherein the spindle (81) is cantilevered.
3. The timepiece assembly (1) according to any one of claims 1 and 2, wherein the arbour (81) is mounted on the rough movement (91) without passing through the rough movement (91) in the direction of the axis (A80).
4. A timepiece assembly (1) according to any one of claims 1 to 3, wherein the rough movement (91) comprises a bushing (93) nailed and / or glued into a hole (94), in particular a through hole (94), formed in the rest of the rough movement.
5. Timepiece assembly (1) according to claim 4, wherein said hole (94) is delimited by an excess thickness formed locally on the rest of the rough movement.
6. Timepiece assembly (1) according to any one of the preceding claims, wherein said arbour (81) is mounted so as to be movable in rotation relative to said rough movement about said first axis (A80).
7. A timepiece movement (100) comprising a timepiece assembly (1) according to any one of the preceding claims.
8. Timepiece movement (100) according to the preceding claim, in which the arbour (81) is a barrel arbour (80), to the end (811) of which a gear (83), in particular a ratchet (83), is fixed.
9. A timepiece movement (100) according to any one of claims 7 and 8, wherein the timepiece movement comprises a barrel (80), and wherein the toothed ring (85) of the barrel pivots on the rough movement (91), the toothed ring being mechanically connected to a core (812) arranged on the arbour (81) via a power spring.
10. Timepiece movement (100) according to the preceding claim, in which the toothing (85) is guided in rotation on the rough movement (91) by a roller (70), in particular a roller made of ruby.
11. A timepiece movement (100) according to the preceding claim, wherein the roller pivots around an axis (71) driven into the rough movement (91), and / or wherein the timepiece movement comprises a pin (98) whose position on the first axis (A80) is adjustable to limit the oscillation of the gear (83) by contact with the gear (83).
12. A timepiece (200), in particular a watch (200), comprising: - a timepiece component (1) according to any one of claims 1 to 6, and / or - A timepiece movement (100) according to any one of Claims 7 to 11.
13. A method for mounting a timepiece assembly (1) according to any one of claims 1 to 6 or a timepiece movement (100) according to any one of claims 7 to 11 or a timepiece (200) according to the preceding claims, the method comprising: - a step of showing or providing an arbour (81) and sliding said arbour (81) in translation along a second axis (A90) in a groove (92) of a rough movement (91), and a step of showing or providing a crown (85) and mounting said crown (85) on said rough movement (91) or on a frame (91), and then - A step of providing and placing a power spring to mechanically connect said spindle (81) to said crown (85).
14. A method for mounting a timepiece assembly (1) according to any one of claims 1 to 6 or a timepiece movement (100) according to any one of claims 7 to 11 or a timepiece (200) according to the preceding claims, the method comprising: - a step of presenting or providing a crown (85) and mounting said crown (85) on a rough movement (91) or on a frame (91), and a step of presenting or providing an arbour (81) and a power spring and assembling said power spring on said arbour (81) to obtain an assembly, and then - A step of mounting said assembly by sliding said arbour (81) in translation along a second axis (A90) in said groove (92) of said rough movement (91).
15. The installation method according to claim 13 or 14, wherein after the above steps, the method further comprises: - A step of placing the gear wheel (83) on said spindle (81) and fixing these two parts to each other.
16. A device obtained by implementing the method according to any one of claims 13 to 15.