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Optimised timepiece barrel

A barrel and clockwork technology, applied to clocks, clocks, mechanically driven clocks, etc., can solve problems such as wear and damage to the pivot

Inactive Publication Date: 2016-08-03
ETA SA MFG HORLOGERE SUISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Observations of the performance over time of barrels protected in this way show that, due to the inherent characteristics of these treatments, whether they are surface or core treatments or painted, sprayed or otherwise treated (all of which hereinafter referred to as "treatment"), at its pivot, premature wear may occur due to the surface and tribological properties of the wear-resistant treated area, which may damage the pivot or the like

Method used

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Embodiment Construction

[0032] The present invention relates to the field of timepiece mechanisms comprising springs in frictional contact, and more particularly to mainspring barrels and striking barrels.

[0033] In order to prevent wear problems in pivoting areas, wear-resistant treatments that provide high hardness to the material must be avoided on the surfaces where pivoting occurs (spindle bore, bearing surfaces), whether these are thermal or induction treatments, surface treatments, coatings , spraying or other treatments, all of which are referred to below as "treatments". More specifically, the invention advantageously avoids depositing even a limited amount of DLC or any other PVD / CVD coating (and similar method), ensuring impermeability to the carrier gas during the process for depositing the adhesion layer and sublayers.

[0034] The invention thus relates to a timepiece barrel 1 comprising at least one barrel 2 for receiving at least one helical winding barrel in a cavity 4 partially d...

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PUM

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Abstract

The invention relates to a timepiece barrel (1) comprising a drum (2) with a first spring bearing surface (20) of a chamber (4) for holding a spring (3), comprising a bore (11) for guiding the pivotal movement of a core (9) and bordered by a lower abutment bearing surface (12) adjacent to said side inner wall (5), and by an outer abutment bearing surface (13). The first spring bearing surface (20) on the chamber (4) side comprises a DLC coating, and the bore (11) is free from any DLC coating. The invention also relates to a method for manufacturing such a barrel including: manufacturing such a drum (2); protecting at least the bore (11) in order to prevent the effects of an anti-wear or DLC treatment; and performing a DLC treatment on the entire drum (2) with the exception of the area thus protected.

Description

technical field [0001] The invention relates to a timepiece barrel comprising at least one barrel for receiving at least one helically wound mainspring in a chamber partially defined by a first mainspring bearing surface, so Said barrel comprises at least one first hole guiding the pivoting of the core or arbor, said first hole being delimited on one side by a first inner abutment surface adjacent to said first spring bearing surface, at The other side is bounded by the first outer abutment surface. [0002] The invention relates to a timepiece movement comprising at least one such barrel. [0003] The invention relates to a timepiece comprising at least one such movement and / or at least one such barrel. [0004] The invention relates to a method of manufacturing a timepiece barrel to protect said barrel from wear due to friction with a mainspring. [0005] The present invention relates to the field of timepiece mechanisms comprising springs in frictional contact, and more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B1/16
CPCG04B1/16C23C14/0605C23C16/26G04D99/00
Inventor S·克泽尔S·尼库M·勒特利斯贝格尔
Owner ETA SA MFG HORLOGERE SUISSE
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