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Title:
CONSTANT-FORCE SPRING
Document Type and Number:
WIPO Patent Application WO/2018/040587
Kind Code:
A1
Abstract:
The invention relates to the field of mechanical components, and specifically, to a constant-force spring, resolving a problem in which it is not possible to keep an elastic force of a conventional spring constant. The constant-force spring comprises a cylindrical main body (1) made up of an elastic material. The outer periphery of the main body is a concave surface (11) bending inwards at a middle section thereof in an axial direction. The inner periphery of the main body is a convex surface (12) bending outwards at a middle section thereof in an axial direction. When operated in a defined compression range, the constant-force spring can produce a constant elastic force.

Inventors:
ZHU, Zhengzhong (Electrical and Mechanical Industrial Zone, ShaAo Village Zhugang Town, Yuhuan Count, Taizhou Zhejiang 0, 317600, CN)
Application Number:
CN2017/081170
Publication Date:
March 08, 2018
Filing Date:
April 20, 2017
Export Citation:
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Assignee:
ZHEJIANG TOPSUN LOGISTIC CONTROL CO., LTD. (Electrical and Mechanical Industrial Zone, ShaAo Village Zhugang Town, Yuhuan Count, Taizhou Zhejiang 0, 317600, CN)
International Classes:
F16F1/373
Domestic Patent References:
2014-04-24
Foreign References:
CN105041933A2015-11-11
CN106246780A2016-12-21
CN203627624U2014-06-04
CN105156530A2015-12-16
Attorney, Agent or Firm:
TAIZHOU FANGYUAN PATENT ATTORNEY FIRM (GENERAL PARTNERSHIP) et al. (3rd Floor High-Tech Innovation Service Center, Development RoadTaizhou, Zhejiang 0, 318000, CN)
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