Elastic retaining member for attaching a timepiece component to a support element

Patent metadata

Field	Value
Publication number	US-12326694-B2
Application number	US-201917276429-A
Country	US
Kind code	B2
Filing date	Aug 28, 2019
Priority date	Sep 21, 2018
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

An elastic retaining member for attaching a timepiece component to a support element, includes an opening into which the support element is likely to be inserted, the retaining member includes rigid arms and elastic arms defined between connecting zones helping to ensure elastic clamping of the support element in the opening the rigid arms being provided with the only contact zones of the retaining member with the support element and in that, the rigid or elastic arms each extend longitudinally between connecting zones, the rigid arms and the elastic arms being arranged in the retaining member successively and alternately and each rigid arm has a volume of material greater than the volume of material constituting each elastic arm.

First claim

The invention claimed is:

1. An elastic retaining member for attaching a timepiece component to a support element, the elastic retaining member comprising:
an opening into which said support element is configured to be inserted;
rigid arms; and
elastic arms defined between connecting zones to ensure elastic clamping of the support element in the opening,
wherein the rigid arms are provided with the only contact zones of the retaining member with the support element,
wherein the rigid arms and the elastic arms are arranged in the retaining member successively and alternately,
wherein an inner peripheral surface of each contact zone of the rigid arms is configured to face in a direction of the support element, each inner peripheral surface is comprised of a plurality of contact surfaces configured to engage the support element,
wherein each of the contact surfaces has a planar shape,
wherein the elastic retaining member comprises an attachment point with the timepiece component, the attachment point being positioned along an outer circumference of the elastic retaining member, and
wherein a first rigid arm of the rigid arms is positioned immediately adjacent the attachment point on a first side of the attachment point along the outer circumference, and a first flexible arm of the flexible arms is positioned immediately adjacent the attachment point on a second side of the attachment point along the outer circumference opposite the first side such that the attachment point is positioned between the first rigid arm and the first flexible arm along the outer circumference of the elastic retaining member.

2. The elastic retaining member according to claim 1 , wherein the retaining member comprises an outer structure configured to be connected to said timepiece component and an inner structure defining the opening into which the support element is configured to be inserted,
wherein the retaining member comprises the rigid arms and the elastic arms interconnecting the outer and inner structures, the rigid arms being interconnected by said elastic arms.

3. The elastic retaining member according to claim 1 , wherein the elastic retaining member includes comprises as many rigid arms as elastic arms.

4. The elastic retaining member according to claim 1 , wherein each rigid arm is connected at two opposite ends thereof to two different elastic arms.

5. The elastic retaining member according to claim 1 , wherein each rigid arm has a volume of material greater than the volume of material constituting each elastic arm.

6. The elastic retaining member according to claim 1 , wherein each elastic arm has a transverse section that is smaller than a transverse section of each rigid arm.

7. The elastic retaining member according to claim 1 , wherein each elastic arm has a transverse section that is constant in the entire body of this elastic arm.

8. The elastic retaining member according to claim 2 , wherein the outer and inner structures respectively comprise outer and inner peripheral walls of said retaining member.

9. The elastic retaining member according to claim 8 , wherein the outer and inner peripheral walls are separated from one another according to a variable gap.

10. The elastic retaining member according to claim 9 , wherein said gap is a maximum gap when it is defined between portions of outer and inner peripheral walls included in the rigid arms.

11. The elastic retaining member according to claim 9 , wherein said gap is a maximum gap when it is defined between portions of the outer peripheral wall and the contact surfaces defined in the inner peripheral wall included in the rigid arm.

12. The elastic retaining member according to claim 9 , wherein said gap is a minimum gap when it is defined between portions of the outer and inner peripheral walls included in the elastic arms.

13. The elastic retaining member according to claim 2 , wherein the outer and inner structures have different shapes.

14. The elastic retaining member according to claim 1 , wherein the elastic retaining member is a collet for attaching the timepiece component to a support element such as a balance staff.

15. The elastic retaining member according to claim 1 , wherein the elastic retaining member is made of a silicon-based material.

16. An elastic retaining member-timepiece component unit for a horological movement of a timepiece comprising a retaining member according to claim 1 .

17. The unit according to claim 16 , wherein the unit is one piece.

18. An assembly for a horological movement of a timepiece comprising the elastic retaining member-timepiece unit according to claim 16 , said unit being attached to the support element.

19. A method for producing an assembly of an elastic retaining member-timepiece component unit with a support element according to claim 18 , comprising:
a step of inserting the support element into the opening of the elastic retaining member of said unit, said step comprising a sub-step of elastically deforming the elastic retaining member provided with a phase of moving the rigid arms of the elastic retaining member inducing a double elastic deformation of the elastic arms of this elastic retaining member, and
a step of attaching the retaining member to the support element comprising a sub-step of applying by the rigid arms of the elastic retaining member a resistance torque on said support element.

20. The horological movement comprising at least one assembly according to claim 18 .

21. A timepiece comprising a horological movement according to claim 20 .

Assignees

• Nivarox Far Sa

Inventors

• Hernandez Ivan
• Cusin Pierre

Classifications

• G04B17/34 Primary

  for fastening the hairspring onto the balance · CPC title

• G04B17/345 Primary

  Details of the spiral roll · CPC title