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Device for attaching a bottom on a middle for a clockpiece

A fastening and bottom cover technology, which is applied to mechanically driven clocks, clocks, instruments, etc., can solve the problems of difficulty in correct implementation of angle indexing

Active Publication Date: 2022-02-22
THE SWATCH GRP RES & DEVELONMENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combined with good tightness of the components and perfect water resistance of the seals, this angular indexing is often difficult to get right

Method used

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  • Device for attaching a bottom on a middle for a clockpiece
  • Device for attaching a bottom on a middle for a clockpiece
  • Device for attaching a bottom on a middle for a clockpiece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The invention is proposed to achieve a sealed and fixed assembly of the external parts with easy-to-achieve angular indexing and in guaranteed positions with a minimum number of parts.

[0016] Figure 1 to Figure 5b A non-limiting example of mounting and angular indexing relative to a caseback of a centerpiece is shown.

[0017] The invention relates to a fastening device 100 for fastening a bottom cover 2 on a center piece 1 of a watch, comprising at least one pin 4 integral with the center piece, a seal mounted on the bottom cover comprising Arranged near its periphery is at least one slot cooperating with a pin. The bottom cover 2 comprises near its periphery at least one slot 5 in which the pin 4 is arranged to slide between a first position, called an inserted position, and a second position, called a locked position, wherein in the first position the bottom cover 2 The cover 2 is free, in the second position the bottom cover 2 is locked and positioned angularly...

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PUM

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Abstract

The invention relates to a device for attaching a bottom on a middle for a clockpiece. A device is for fastening a back on a middle of a watch. The back has a shoulder forming a cover arranged to cover entirely partly with the middle and a body arranged to rest in the middle. The device includes at least one pin integral with the middle, a seal mounted between the back and the middle. The back includes, near its periphery, at least one groove, the pin being arranged to slide in the groove between a first position, called the insertion position in which the back is free, and a second position called locking position in which the back is locked and positioned angularly relative to the middle. The groove includes at least one bump to form a hard point and increase the torque when the pin passes through the bump.

Description

technical field [0001] The invention relates to a fastening device for fastening a caseback on a middle of a watch. [0002] The invention also relates to a timepiece, in particular a watch, comprising such a fastening device. Background technique [0003] External parts of watches and similar instruments are subject to many constraints, notably water resistance, robustness, appearance, and must avoid any unintentional disassembly irretrievably during aftermarket interventions for seal replacement, cleaning, lubrication, or even repair way of production. [0004] Also, some external or control parts must be angularly indexed relative to each other in order to mark the original, rest or actuation reference position, or in turn to facilitate the reading of indications or scales, or to ensure retention ( left) and / or the continuity of the decorative surface. Combined with good tightness of the components and perfect water resistance of the seals, this angular indexing is oft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B37/08
CPCG04B37/08G04B37/11G04B37/0033G04B37/0008
Inventor J·阿利曼B·查尔特雷尔
Owner THE SWATCH GRP RES & DEVELONMENT LTD