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Control systems for timepieces

A technology for control systems and clocks, which is applied to clocks, mechanically driven clocks, clockwork ratchet mechanisms, etc., can solve the problems of low accuracy and rotation transmission efficiency, and achieve the effect of material saving and cost reduction

Active Publication Date: 2019-12-03
THE SWATCH GROUP MANAGEMENT SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of this type of transmission is that its accuracy and the efficiency of the transmission of rotation decrease especially over time due to the gradual wear of the contact surfaces of the transmission parts

Method used

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  • Control systems for timepieces
  • Control systems for timepieces
  • Control systems for timepieces

Examples

Experimental program
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Embodiment Construction

[0021] All of the preferred embodiments shown in the following figures show a flange used as a rotating element and a crown used as a control element. However, those skilled in the art should understand that the present invention is applicable to other types of rotating elements. These rotating elements do not necessarily form a part of the display element, but may be composed of transmission elements or gear elements of a timepiece train. In addition, the invention also relates to control elements that do not necessarily consist of a crown. Therefore, as an example of an alternative embodiment that is not shown, it is also conceivable to use a button acting on the tooth portion of the gear by means of a control lever instead of the crown as the control element, and to set the drive wheel on the The rod-driven gear is coaxial and rotates on a fixed gear. However, this embodiment has the disadvantage that rotation control cannot be performed equally in both directions.

[0022] ...

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Abstract

The invention relates to a control system for a rotary element of a timepiece, comprising a control element for actuating said rotary element, and transmission means between said control element and said rotary element. The control system is characterized in that the transmission is a hybrid transmission comprising a first element displaceable around a first axis of rotation (10) and a second element (31) made of elastomeric material A drive wheel (25), said second element is movable around a second axis of rotation (30) and is provided with a rolling tooth system (32). The drive pulley (25) is frictionally engaged with a rolling tooth system (32).

Description

Technical field [0001] The invention relates to a control system for a rotating element of a timepiece and more specifically for a flange / flange. Background technique [0002] In the field of watchmaking, a flange has been known for a long time that includes an annular member arranged on the outer periphery of the dial and partially covers the edge of the dial. The flange may be fixed or not fixed on the bezel, and the watch glass of the watch is mounted on the bezel. Some flanges can move independently of the rotation of the bezel and are integrally located under the crystal. In order to control such a rotating flange, the most common control system involves the use of a crown provided with an end pinion at its end that meshes with a serration provided on the inner side of the flange to Drive the flange to rotate. For example, the patent FR 1027587 describes this control system, which is realized through the cooperation of the tooth structure of the flange and the crown pinio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04B27/00
CPCG04B27/001G04B3/041G04B19/18G04B19/283G04B11/003G04B13/021G04B13/027G04B27/02
Inventor P·屈米S·布里茨瓦尔特
Owner THE SWATCH GROUP MANAGEMENT SERVICES