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Timepiece indexing element

A watch assembly, watch technology, applied to a method including an elastic return device. field

Active Publication Date: 2021-02-09
ETA SA MFG HORLOGERE SUISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, dimensional variations during production can cause significant force variations in these springs, so these forces are not reproducible

Method used

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  • Timepiece indexing element
  • Timepiece indexing element
  • Timepiece indexing element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The invention relates to a timepiece indexing element 10 arranged to cooperate with a timepiece part 20 in a substantially coaxial manner about an axis D around which the indexing element 10 extends.

[0024] The part 20 comprises an indexing relief element 30 defining a plurality of indexing positions. The indexing relief elements may be formed by teeth as shown, or by semi-cylindrical flutes, or by notches, protrusions, pins or other structures.

[0025] The indexing element 10 comprises a first bearing surface 11 arranged to cooperate in an abutting manner with a complementary second bearing surface 21 comprised in the component 20 . This contact area between the indexing element 10 and the component 20 ensures a perfect positioning of the one relative to the other: the position of each is known and controlled.

[0026] The indexing element 10 comprises elastic return means 12 arranged to exert a substantially radial thrust on the part 20 about the axis D to press t...

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PUM

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Abstract

The present invention relates to a timepiece indexing element (10) coaxially cooperating with a component (20) comprising an indexing relief element (30) defining a plurality of indexing positions, the indexing relief element (30) comprising a plurality of indexing points, the clock indexing element comprises a first supporting surface (11) matched with the component (20) in an abutting mode, an elastic reset device (12) exerting radial thrust on the component (20) to press the component (20) against the first supporting surface (11), and an indexing device (13) matched with the indexing concave-convex element (30). The elastic resetting device (12) comprises at least one first elastic arm (14) and at least one second elastic arm (16), the first elastic arm (14) comprises a first indexingsurface (15) contained in the indexing device (13) and is arranged to exert a radial thrust on the component (12), and the second elastic arm (16) is arranged to exert a radial thrust on the first elastic arm (14).

Description

technical field [0001] The invention relates to a timepiece indexing element arranged to cooperate with a timepiece component in a substantially coaxial manner about an axis around which said indexing element extends, said The timepiece component includes an indexing relief element defining a plurality of indexing positions, said indexing element comprising a first bearing surface arranged to align with a complementary first relief element contained in said component. The two bearing surfaces fit in an abutting manner, and the indexing element includes elastic return means arranged to exert a substantially radial thrust on the part about the axis in order to press the part against the rests against said first bearing surface, and said indexing element comprises indexing means arranged to cooperate with said indexing relief element of said part for said indexing element and The relative scale between the parts. [0002] The invention also relates to a timepiece assembly compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B13/02
CPCG04B13/021G04B11/04G04B13/023G04B11/003G04B19/02G04B19/253G04B27/005
Inventor J·撒格里尼
Owner ETA SA MFG HORLOGERE SUISSE