CIRCUIT BREAKER HAVING AUTOMATIC RELEASE LINKAGE AND AUTOMATIC RELEASE LINKAGE USED THEREIN

摘要

A Battery circuit breaker including automatic release link device and the automatic release link device are provided to prevent the damage and the deformation of the element of the open-close link part in spite of the repulsive power delivered from the driving connector by automatically releasing the constraint of the open-close link part. A driving connector electrifies the first terminal and the second terminal selectively. The open-close link part includes a connection link(140). The connection link delivers the repulsive power(88) from the driving connector to the trip roller(55) as the action force. The second link(160) rotates the circumstance of the latch pin (150a). The third link(170) moves to the first link relatively. The side of the third link gears with the outer circumference of the off lever(190). The spring(180) is installed between the second link and the third link. The elastic force of the spring acts to the direction of the line of action(99). The component of force of the line of action direction of the action force acts contrary to the elastic force. If the component of force is bigger than the predetermined value in comparison with the elastic force, the engaged position between the side of the third link and the off lever is released.