US-12619196-B2 - Monolithic part for attaching a timepiece component on a support element

Abstract

An attachment monolithic part for fastening a timepiece component on a support element, including an opening into which the support element could be inserted, the attachment part including elastic arms contributing to ensuring an elastic clamping of the support element in the opening, each arm consisting of a contact portion provided with a through hole and with a connecting portion, the contact portion including a receiving region provided with a bearing area intended to come into contact with the support element and the connecting portion ensuring an elastic connection with another one of the arms of the part.

Inventors

• Ivan HERNANDEZ

Assignees

• NIVAROX-FAR S.A.

Dates

Publication Date

20260505

Application Date

20231102

Priority Date

20221125

Claims (18)

1. 1 . An attachment monolithic part for fastening a timepiece component on a support element, the attachment monolithic part comprising: an opening into which said support element can be inserted, and elastic arms to provide an elastic clamping of the support element in the opening, each arm consisting of a contact portion provided with a single through hole and with a connecting portion, said contact portion comprising a receiving region provided with a bearing area to come into contact with the support element and said connecting portion ensuring an elastic connection with another one of said arms of the part, wherein the connecting portion of each elastic arm extends longitudinally between two contact portions and has a cross-section that is constant.
2. 2 . The attachment monolithic part according to claim 1 , wherein the contact portion of each arm is configured so that a variable volume defined by the single through hole is reduced when said portion is stressed by the support element.
3. 3 . The attachment monolithic part according to claim 1 , wherein each contact portion comprises two lateral regions, the receiving region, and an outer region, which together surround the single through hole.
4. 4 . The attachment monolithic part according to claim 3 , wherein each particular region of the receiving region, the two lateral regions, and the outer region is configured to be deformed in a respectively different manner as the particular region is stressed by the support element.
5. 5 . The attachment monolithic part according to claim 1 , wherein each contact portion comprises two lateral regions, the receiving region, and an outer region, which together surround the single through hole, each particular region of said regions having a respective deformation coefficient whose value decreases, as the particular region moves away from the bearing area of the receiving region.
6. 6 . The attachment monolithic part according to claim 1 , wherein the single through hole represents between 20 and 80 percent of an entirety of the contact portion of each arm.
7. 7 . The attachment monolithic part according to claim 1 , wherein the arms are linked together at one end of respective connecting portions.
8. 8 . The attachment monolithic part according to claim 1 , wherein the connecting portion is configured to undergo a torsion elastic deformation and a tensile deformation.
9. 9 . The attachment monolithic part according to claim 1 , wherein the contact portions and the connecting portions are successively and alternately arranged in the attachment monolithic part.
10. 10 . The attachment monolithic part according to claim 1 , further comprising a point for attachment with the timepiece component.
11. 11 . The attachment monolithic part according to claim 1 , wherein said attachment monolithic part is a collet to fasten the timepiece component to the support element.
12. 12 . The attachment monolithic part according to claim 1 , wherein said attachment monolithic part is made of a silicon-based material.
13. 13 . An attachment monolithic part-timepiece component assembly for a horological movement of a watch, the attachment monolithic part-timepiece component assembly comprising the attachment monolithic part according to claim 1 .
14. 14 . The assembly according to claim 13 , wherein the attachment monolithic part-timepiece component assembly is monolithic.
15. 15 . An assembly for a horological movement of a watch comprising the attachment monolithic part-timepiece component assembly according to claim 13 , said assembly being fastened to the support element.
16. 16 . A horological movement comprising the assembly according to claim 15 .
17. 17 . A watch comprising the horological movement according to claim 16 .
18. 18 . A method for making the assembly of the attachment monolithic part—timepiece component assembly with the support element according to claim 17 , comprising: inserting the support element into the opening of the attachment monolithic part of said assembly, the inserting step further comprising elastically deforming the attachment monolithic part provided with a phase of moving the elastic arms of the attachment monolithic part imparting an elastic deformation of the contact portion of each arm and a dual elastic deformation of the connecting portion of said arm of the attachment monolithic part, and fastening the attachment part on the support element comprising performing a radial elastic clamping of the attachment part on the support element.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to European Patent Application No. 22209692.7 filed on Nov. 25, 2022, the entire disclosure of which is hereby incorporated herein by reference. FIELD OF THE INVENTION The invention relates to an attachment monolithic part such as a collet for fastening a timepiece component on a support element. The invention also relates to an attachment monolithic part—timepiece component assembly such as a balance spring—collet monolithic assembly. BACKGROUND OF THE INVENTION In the prior art, attachment parts such as timepiece collets are known which are involved in assemblies of balance-springs on balance shafts in a horological movement and that being so, by elastic clamping. Nonetheless, such attachment parts have the major drawback of imposing complex, long and expensive mounting operations, when making such assembly, as these attachment parts have hold torques on these balance shafts that are low and limited. SUMMARY OF THE INVENTION The present invention aims to overcome all or part of the aforementioned drawbacks by providing an attachment monolithic part which has a great hold torque in particular to facilitate/simplify the operations of mounting an assembly of an attachment monolithic part—horological component assembly with a support element as well as ensuring enough hold to guarantee holding in position in the plane and guaranteeing its angular position throughout the service life of the component. To this end, the invention relates to an attachment monolithic part for fastening a timepiece component on a support element, comprising an opening into which said support element could be inserted, the attachment part comprising elastic arms contributing to ensuring an elastic clamping of the support element in the opening, each arm consisting of a contact portion provided with a through hole and with a connecting portion, said contact portion comprising a receiving region provided with a bearing area intended to come into contact with the support element and said connecting portion ensuring an elastic connection with another one of said arms of the part. In other embodiments: the contact portion of each arm is configured so that a variable volume defined by the through hole is reduced when this portion is stressed by the support element;each contact portion comprises two lateral regions, the receiving region and an outer region which together surround the through hole;said regions are configured to be deformed in different manners as they are stressed by the support element;said regions have deformation coefficients whose respective values decrease, as these regions get away from the bearing area of the receiving region;the through hole represents between 20 and 80 percents of the entire body of the contact portion of each arm;the arms are linked together at one end of their connecting portion;the connecting portion is configured to undergo a dual elastic deformation;the contact portions and the connecting portions are successively and alternately arranged in the attachment part;the attachment monolithic part comprises a point for attachment with the timepiece component;the attachment monolithic part is a collet for fastening the timepiece component such as a balance-spring to a support element such as a balance shaft;the attachment monolithic part is made of a silicon-based material. The invention also relates to an attachment monolithic part—timepiece component assembly for a horological movement of a watch comprising such an attachment part. Advantageously, the assembly is monolithic. The invention also relates to an assembly for a horological movement of a watch comprising said attachment monolithic part—timepiece component assembly, said assembly being fastened to a support element. The invention also relates to a horological movement comprising at least one such assembly. The invention also relates to a watch comprising such a horological movement. The invention also relates to a method for carrying out such an assembly of an attachment monolithic part—horological component assembly with a support element, comprising: a step of inserting the support element into the opening of the attachment monolithic part of said assembly, said step comprising a substep of elastically deforming the attachment monolithic part provided with a phase of moving the elastic arms of the attachment monolithic part imparting an elastic deformation of a contact portion of each arm and a dual elastic deformation of a connecting portion of this arm of the attachment monolithic part, anda step of fastening the attachment part on the support element comprising a substep of carrying out a radial elastic clamping of the attachment part on the support element. BRIEF DESCRIPTION OF THE DRAWINGS Other particularities and advantages will clearly arise from the following description, made for indicative and non-limiting purposes, with reference to the appended drawings,