Title:
CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2018/086539
Kind Code:
A1
Abstract:
Disclosed is a circuit breaker (100), comprising a moving contact (21), a fixed contact (22), a spindle (34) and an operating mechanism (30). The moving contact (21) can rotate, relative to the fixed contact (22), around a centre of rotation (0) of the spindle (34). Turning on or breaking of a circuit is realised by means of contact or disconnection between the moving contact (21) and the fixed contact (22). The operating mechanism (30) comprises an upper connecting rod (32), a lower connecting rod (33) and a handle (311). The upper connecting rod (32) is arranged in such a manner that same can rotate around one end of the upper connecting rod (32) under the driving action of the handle (311), and the other end of the upper connecting rod (32) is rotatably connected to one end of the lower connecting rod (33) by means of a connecting rod articulated shaft (36), so that the other end of the lower connecting rod (33) is articulated to the spindle (34) and can drive the spindle (34) to drive the moving contact (21) to rotate, wherein the working length of the upper connecting rod (32) and the working length of the lower connecting rod (33) as well as the working length of the upper connecting rod (32) and a distance from a point (A), where the lower connecting rod (33) and the spindle (34) are articulated, to the centre of rotation (0) of the spindle (34) have a pre-determined proportional relationship, so that an angle of rotation, formed after the moving contact (21) is disconnected from the fixed contact (22), of the moving contact (21) is greater than 30 degrees. Thus, the purpose of improving the breaking capacity of the circuit breaker (100) is realised.
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Inventors:
ZHU JINBAO (CN)
GU CHUNLEI (CN)
LIU KANYUAN (CN)
HE GAOSHENG (CN)
NAN TIAN (CN)
GU CHUNLEI (CN)
LIU KANYUAN (CN)
HE GAOSHENG (CN)
NAN TIAN (CN)
Application Number:
PCT/CN2017/109955
Publication Date:
May 17, 2018
Filing Date:
November 08, 2017
Export Citation:
Assignee:
BEIJING PEOPLES ELECTRIC PLANT CO LTD (CN)
International Classes:
H01H71/12; H01H3/46
Foreign References:
| CN106571274A | 2017-04-19 | |||
| CN202013857U | 2011-10-19 | |||
| CN105632850A | 2016-06-01 | |||
| CN103681137A | 2014-03-26 | |||
| CN104810222A | 2015-07-29 | |||
| CN103928272A | 2014-07-16 | |||
| US20110273249A1 | 2011-11-10 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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