Title:
OPERATION MECHANISM FOR MINIATURE CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2017/121164
Kind Code:
A1
Abstract:
An operation mechanism for a miniature circuit breaker comprises a handle, a driving connecting rod, a stationary contact and a moving contact, and further comprises a tension spring and a trip lever. One end of the driving connecting rod is hinged to the handle, and the other end of the driving connecting rod matches with the moving contact. One end of the tension spring is fixed to a housing, and the other end of the tension spring is connected to the moving contact. The moving contact is driven by the tension spring and the driving connecting rod together to provide a contact pressure and an overstretching elastic force required for ensuring the reliability of electrical contact for connecting the moving contact and the stationary contact. In addition, the tension spring provides an energy storage elastic force required for resetting the mechanism for disconnecting the moving contact from the stationary contact. The trip lever is disposed on the moving contact, and is configured to control locking and unlocking between the driving connecting rod and the moving contact. When a fault occurs, the trip lever separates the driving connecting rod from the moving contact to automatically release the operation mechanism. The mechanism can effective simplify the structure, reduce the manufacturing cost, improve the production efficiency, and optimize the mechanical performance.
Inventors:
YANG FENG (CN)
JIANG YUKUN (CN)
SI YINGGE (CN)
HUANG DONGLIN (CN)
TANG HAO (CN)
JIANG YUKUN (CN)
SI YINGGE (CN)
HUANG DONGLIN (CN)
TANG HAO (CN)
Application Number:
PCT/CN2016/103018
Publication Date:
July 20, 2017
Filing Date:
October 24, 2016
Export Citation:
Assignee:
ZHEJIANG CHINT ELECTRICS CO LTD (CN)
International Classes:
H01H71/10
Foreign References:
| CN205487987U | 2016-08-17 | |||
| CN203434106U | 2014-02-12 | |||
| CN101677049A | 2010-03-24 | |||
| CN103346046A | 2013-10-09 | |||
| JPH0636668A | 1994-02-10 | |||
| JPH06176678A | 1994-06-24 |
Other References:
See also references of EP 3404691A4
Attorney, Agent or Firm:
BEIJING JOYAN INTELLECTUAL PROPERTY OFFICE (CN)
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