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Silicon-based final-coil balance spring

一种平衡弹簧、游丝的技术，应用在硅基末圈游丝平衡弹簧领域，能够解决多能量消耗等问题

Active Publication Date: 2015-02-11
MASTER DYNAMIC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However since there are two balance springs in this oscillating system this leads to more energy consumption

Method used

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  • Silicon-based final-coil balance spring
  • Silicon-based final-coil balance spring
  • Silicon-based final-coil balance spring

Examples

Experimental program
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Embodiment Construction

[0044] The present invention provides a planar silicon balance spring having a main body and an integrally formed end-coil balance spring portion in order to improve the concentricity and isochronism of this spring when used in a timepiece.

[0045] The balance spring includes a final balance spring part which achieves said improvement in concentricity and isochronism, said final balance spring part being integrally formed with the main body of the balance spring and arranged with the final balance spring out of plane and by using The manufacturing process in which it is formed extends from the periphery of the body of the balance spring.

[0046] The present invention provides a method of manufacturing an end-coil balance spring, whereby said balance spring is formed from a silicon-based material, which provides an integrally formed silicon end-coil balance spring without the need for a balance spring as previously mentioned. Any connection unit required for a balance spring ...

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PUM

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Abstract

A method of producing unitary formed silicon balance spring (2) having an overcoil portion for regulation of a mechanical timepiece includes providing a silicon balance spring (2) having a main body portion (23), and an outer portion (22) for formation as an overcoil portion, wherein the outer portion (22) extends radially outward from an outermost turn of the main body portion (23) and wherein said main body portion (23) and said outer portion (22) are integrally formed from a silicon based material and are formed in a co-planar configuration. The outer portion (22) is moved in a direction relative to and out of the plane of said main body portion (23), and in a direction towards over said main body portion (23) and towards the plane of the main body portion. A stress relaxation process is provided to the balance spring so as to relieve internal stresses induced within the balance spring from the second step. After movement of said outer portion (22) into the plane of said main body portion (23), the outer portion (22) is located in an overcoil configuration relative to said main body portion.

Description

technical field [0001] The invention relates to a balance spring with a balance spring with a silicon-based end coil. More precisely, the invention relates to silicon end-coil springs and methods of manufacturing such springs. Background technique [0002] A timepiece's regulating assembly generally comprises a balance wheel, which is an inertia flywheel, and a balance spring, which is a resonator. These two components determine the quality of work and precision of the timepiece. The resonant frequency of the balance spring and balance wheel system controls the operation and regulation of the horological movement. [0003] The use of silicon as a material for the manufacture of balance springs is known in the field of clock springs. Due to the progress made in the development of the IC industry, the ultra-high manufacturing precision of such manufacturing processes provides high precision in the dimensions of the balance spring. Furthermore, silicon is a non-magnetic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B17/06
CPCG04B17/066G04D3/0041G04B17/32G04B17/325Y10T29/49579
Inventor 王英男程浩
Owner MASTER DYNAMIC LTD