Gripper for timepiece component

Patent metadata

Field	Value
Publication number	US-12535773-B2
Application number	US-202318199563-A
Country	US
Kind code	B2
Filing date	May 19, 2023
Priority date	Jun 21, 2022
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A gripper ( 100 ) with radial clamping, provided for a timepiece component, including a plurality of jaws ( 1 ) distributed about an axis (D), which defines a direction of insertion and/or of extraction for the timepiece component, and connected to a support ( 2 ) of the gripper, each jaw including a bearing surface ( 10 ) arranged to ensure a radial contact, relative to the axis, with a counter surface of the component and to be able to apply on this counter surface a radial clamping force, at least one the jaw being radially movable, in relation to the axis, and having an essentially radial travel in relation to the axis (D). Each mobile jaw is connected to the support by a radial elastic return member ( 3 ) that extends in a general plane (P) perpendicular to the axis and that is arranged between the mobile jaw and the axis (D).

First claim

The invention claimed is:

1 . A gripper with radial clamping, for a timepiece component, including a plurality of jaws distributed about an axis, which defines a direction of insertion and/or of extraction for the timepiece component, and connected to a support of the gripper, each jaw of the plurality of jaws including a bearing surface arranged to ensure a radial contact, relative to said axis, with a counter surface of said component and to be able to apply on this counter surface a radial clamping force, each jaw being radially movable in relation to said axis and having an essentially radial travel in relation to this axis,
wherein each jaw is connected to said support by a respective radial elastic return means that extends in a general plane perpendicular to said axis.

2 . The gripper according to claim 1 , wherein said radial elastic return means is arranged between the mobile jaw connecting said radial elastic return means to said support and said axis.

3 . The gripper according to claim 1 , wherein said support also extends in said general plane.

4 . The gripper according to claim 2 , wherein said support also extends in said general plane.

5 . The gripper according to claim 1 , wherein said essentially radial travel in relation to said axis is provided in an elastic deformation range of said radial elastic return means and is defined by the cooperation between mobile stop surfaces included in each jaw and fixed stop surfaces included in said support.

6 . The gripper according to claim 5 , wherein each jaw includes two said mobile stop surfaces, the first one turned towards said axis and the other second opposite said axis, and wherein said support includes two said fixed stop surfaces, the first one opposite said axis and arranged to bear against the radial end-of-travel stop centripetal with said first mobile stop surface, and the other second turned towards said axis and arranged to bear against the radial end-of-travel stop centrifugal with said second mobile stop surface.

7 . The gripper according to claim 5 , wherein said mobile stop surfaces are supported by a post included in each jaw, and wherein said fixed stop surfaces are those of a slot included in said support, or vice versa.

8 . The gripper according to claim 1 , wherein each jaw is guided in a guide slot included in said support.

9 . The gripper according to claim 8 , wherein the guiding of each jaw in said guide slot is strictly radial in relation to said axis.

10 . The gripper according to claim 1 , wherein said radial elastic return means has, in projection over said plane, a shape of a serpent with a strip forming zig-zag loops about a radial from said axis.

11 . The according to claim 10 , wherein said strip has a variable section.

12 . The gripper according to claim 1 , wherein each jaw of said gripper includes a relief protruding in relation to said support at a first axial side of said gripper, said insertion side, arranged for placing in cooperation said gripper and a said timepiece component, and includes therein, at a distal end, at least one bevelled and/or radiused introduction surface to facilitate the insertion of a timepiece component into or onto the gripper or of the gripper onto or into the timepiece component.

13 . The gripper according to claim 12 , wherein the gripper includes, in a plane parallel to said general plane, a limit surface located on the side opposite the protruding relief of each jaw, in relation to said general plane, and distant from said radial elastic return means of each jaw of a non-zero spacing value, limited by the limit surface, to allow a slight axial bending according to said axis of this radial elastic return means during the insertion of said timepiece component into the gripper, or of the gripper onto said timepiece component, thus by limiting an axial friction, said spacing value being limited to a predetermined threshold value to prevent any permanent deformation of said radial elastic return means.

14 . The gripper according to claim 1 , wherein the gripper is one-piece.

15 . The gripper according to claim 12 , wherein said protruding relief is removable and attached on a one-piece gripper body extending in said general plane and including said support, said radial elastic return means and a support sole, this support sole comprising or being associated with assembly means arranged to cooperate with complementary assembly means included in said protruding relief.

16 . The gripper according to claim 1 , wherein the radial clamping force of each jaw is generated by a return force of the radial elastic return means connecting said jaw to the support.

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Gigon Basile

Classifications

• G04D1/0078 Primary

  Automated gripping means (hand-operated gripping means G04D1/02) · CPC title

• G04D1/0092 Primary

  Devices for positioning and sorting of the components (sorting and positioning in general B23Q) · CPC title

• B25J15/10

  with three or more finger members {(B25J15/0009 takes precedence)} · CPC title

• B25J9/0015

  Flexure members, i.e. parts of manipulators having a narrowed section allowing articulation by flexion · CPC title

• G04D1/005

  for non-automatic assembly, with automatic transport between workbenches · CPC title