ELECTROMAGNETIC OPERATION DEVICE FOR CIRCUIT BREAKER

Japanese Patent JP2017208316

A

PROBLEM TO BE SOLVED: To provide a small-sized electromagnetic operation device for a circuit breaker with a small number of components in which suction force to a fixed iron core generated by magnetic force caused by magnetic flux of a drive coil contributes to deceleration operation of a movable iron core in addition to a spring receiver receiving a spring for deceleration.SOLUTION: An electromagnetic operation device for a circuit breaker comprises: a fixed iron core 120; a movable iron core 130 capable of straightly moving in an inner space of the fixed iron core 120; two driving coils 140, 141 arranged in the fixed iron core 120; a return spring 160 arranged in the inner space of the fixed iron core 120 in which one end of the return spring is positionally regulated by an inner wall of the fixed iron core 120; a return spring receiver 170 of a magnetic material which receives the return spring 160 while movable range of the return spring receiver is regulated in the inner space of the fixed iron core 120. The return spring 160 is constructed to compress/release through the return spring receiver 170 in some sections of the movable range of the movable iron core 130, and to be capable of being magnetically attracted at the end part of the movable range of the return spring receiver 170 by both of the fixed iron core 120 and the movable iron core 130.SELECTED DRAWING: Figure 1

KAI TAKAYUKI
YANO TOMOTAKA

JP2016102038A

November 24, 2017

May 23, 2016

Click for automatic bibliography generation  

MITSUBISHI ELECTRIC CORP

H01H33/38; H01H31/02; H01H33/42

Takenaka Ikuo
Masuo Oiwa
Keigo Murakami
Kenji Yoshizawa

Previous Patent: 保冷装置及び輸送装置

Next Patent: A drive method of a lighting installation using a drive circuit and LED of a lighting installation u...