Title:
CONTACT STRUCTURE IN CIRCUIT BREAKER OR SWITCH
Document Type and Number:
Japanese Patent JP2015215945
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a contact structure in a circuit breaker or a switch capable of stably contacting a movable contact and a stationary contact in both contact parts even in the case where the movable contact at one side is worn.SOLUTION: A movable contact member 11 is fitted to a casing member 21 of which the attitude is changed between a closed attitude and an open attitude by rotation. As the movable contact member 11, a first movable metal fitting 22 which includes a first movable contact 9 and is fitted to the casing member 21 in a rotatable manner in an anti-contact direction, a second movable metal fitting 23 which includes a second movable contact 10 and is fitted to the casing member 21 in a rotatable manner in the anti-contact direction independently of the first movable metal fitting 22, and a double torsion spring 25 and a coil spring 27 for energizing the first movable metal fitting 22 or the second movable metal fitting 23 in a contact direction, respectively, are provided. The closed attitude of the casing member 21 is an attitude further rotated from an attitude in which both the movable contacts 9 and 10 can be contacted with both stationary contacts 5 and 7, in the contact direction by a predetermined amount.
Inventors:
ITO KAZUKI
Application Number:
JP2014096095A
Publication Date:
December 03, 2015
Filing Date:
May 07, 2014
Export Citation:
Assignee:
KAWAMURA ELECTRIC INC
International Classes:
H01H73/02
Domestic Patent References:
| JP2006164981A | 2006-06-22 | |||
| JP2006164981A | 2006-06-22 | |||
| JP2002056763A | 2002-02-22 | |||
| JPH10149758A | 1998-06-02 | |||
| JPH01166429A | 1989-06-30 | |||
| JP2002056763A | 2002-02-22 | |||
| JPH10149758A | 1998-06-02 | |||
| JPH01166429A | 1989-06-30 |
Foreign References:
| CN002640027U | ||||
| CN2640027Y | 2004-09-08 | |||
| WO2007088080A1 | 2007-08-09 | |||
| EP0399282A2 | 1990-11-28 | |||
| WO2007088080A1 | 2007-08-09 | |||
| EP0399282A2 | 1990-11-28 |
Attorney, Agent or Firm:
Yoshiki Ishida