Gearing system for a timepiece

一种齿轮系统、小齿轮的技术，应用在钟表、钟表、齿轮机构等方向，能够解决钟表机芯等时性不利等问题

Active Publication Date: 2011-07-13
NIVAROX FAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, especially in the case of gear trains, this configuration introduces an asymmetry in the arbor, which is detrimental to the isochronism of a timepiece movement and requires the other gear trains fixed on the same arbor to be of the same shape mandrel hole

Method used

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  • Gearing system for a timepiece
  • Gearing system for a timepiece
  • Gearing system for a timepiece

Examples

Experimental program
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Embodiment Construction

[0035] Such as Figures 7 to 9 As shown, the invention relates to a gear system generally indicated by 1 . The gear system comprises an arbor 3 , a pinion 5 and a toothed wheel 7 . exist Figures 7 to 9 In the example shown, the pinion 5 and the wheel 7 are intended to be coaxially mounted on the same spindle 3 . This type of gear system 1 can be applied, for example, to an escape wheel or a transmission wheel set. Of course, the invention is applicable to other horological or non-horological components.

[0036] Such as Figures 7 to 9 As shown, the mandrel 3 is substantially cylindrical with circular cross-section, ie with very good symmetry for mounting in a conventional manner between two supports / bearings (not shown), as described above.

[0037] The pinion 5 has a cylindrical body with an inner diameter section that approximately matches the outer diameter of the spindle 3 . The pinion 5 comprises wings 9 extending radially from said body to cooperate with another ...

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PUM

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Abstract

The invention relates to a system comprising a pinion (5) and a toothed wheel (7), both mounted coaxially with respect to a pivoting arbor (3). According to the invention, the gearing system (1) has an arrangement (21) for linking said pinion to said wheel to prevent relative movement of the one with respect to the other. The invention also relates to the methods for making the toothed wheel (7) and for the final assembly of said gearing system (1). The invention relates to timepieces.

Description

technical field [0001] The present invention relates to compound gear systems (gear systems), for example silicon-metal, for timepieces, and more particularly to such systems including fastening means capable of preventing shear stress. Background technique [0002] In order to prevent shear stresses, it is known in the field of horology to use arbors with a polygonal, ie non-circular section, in order to drive in rotation a part whose arbor hole has a shape matching said polygonal section. However, especially in the case of gear trains, this configuration introduces an asymmetry in the arbor, which is detrimental to the isochronism of a timepiece movement and requires the other gear trains fixed on the same arbor to be of the same shape mandrel hole. [0003] Furthermore, in the case of composite horological components, ie components comprising two materials, for example in the case of toothed wheel-pinion type gear systems, if one of the materials comprises a very restric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B13/02G04D3/00B81C1/00
CPCG04D3/0069G04B13/026G04B13/02
Inventor M·韦拉尔多T·科奴斯J-P·蒂埃博J-B·彼德斯P·卡森
Owner NIVAROX FAR
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