Title:
CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2019/038946
Kind Code:
A1
Abstract:
A circuit breaker comprises a make-break contact for making and breaking an electrical circuit, an open-contact spring, a toggle mechanism, and an electromagnetic operation mechanism. The open-contact spring biases the make-break contact in the opening direction. When the make-break contact shifts from the open state to the closed state, a biasing force that biases the make-break contact in the opening direction increases. The toggle mechanism shifts the make-break contact from the open state to the closed state. The electromagnetic operation mechanism includes: a moving core (63) moving against the biasing force to thereby cause the toggle mechanism to shift the make-break contact from the open state to the closed state; and a fixed core (61) that has a first attraction surface (61a) for attracting the moving core (63) with an inter-surface distance (A) between the first attraction surface (61a) and the moving core (63) that is shorter than a moving distance (B) of the moving core (63).
Inventors:
DEGUCHI TOMOYA (JP)
SAGARA YUTA (JP)
IMAEDA RYUNOSUKE (JP)
KONDO KEISHU (JP)
KOMOTO SHIGEKI (JP)
MORI MITSUGI (JP)
MASUDA SHINICHI (JP)
IWASHITA HISASHI (JP)
UCHINO SOSUKE (JP)
SAGARA YUTA (JP)
IMAEDA RYUNOSUKE (JP)
KONDO KEISHU (JP)
KOMOTO SHIGEKI (JP)
MORI MITSUGI (JP)
MASUDA SHINICHI (JP)
IWASHITA HISASHI (JP)
UCHINO SOSUKE (JP)
Application Number:
PCT/JP2018/001286
Publication Date:
February 28, 2019
Filing Date:
January 17, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01H33/42; H01F7/16; H01H31/02; H01H33/38; H01H33/666
Foreign References:
JPS576146U | 1982-01-13 | |||
JP2003197425A | 2003-07-11 | |||
JP2006024481A | 2006-01-26 | |||
JPH01142128U | 1989-09-28 | |||
JPS6130942U | 1986-02-25 | |||
JP2015162402A | 2015-09-07 | |||
JPS278041Y1 | ||||
US20100164662A1 | 2010-07-01 | |||
JPH0689808A | 1994-03-29 | |||
JPH0574625A | 1993-03-26 | |||
JPH06283326A | 1994-10-07 | |||
JP2008159270A | 2008-07-10 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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