Locking and unlocking mechanism used for circuit breaker

• Main Author: FU CHUNQIU
• Format: Patent
• Language: Chinese; English
• Published: 13.02.2013
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The invention discloses a locking and unlocking mechanism used for a circuit breaker, which comprises a base, a lock catch, a push rod, a spring, a micro switch, a flux converter iron core and a tripper iron core, wherein one end of the lock catch is provided with a locking rod, the other end of the lock catch is a tripping rod, and the middle part of the lock catch is hinged with the base; one end of the push rod is hinged with the base, an upright plate is arranged on the push rod, a limiting step is arranged on the upright plate, and the upper side and the lower side of the limiting step respectively form a first contact surface and a second contact surface; the spring is located between the base and the push rod; one end of the micro switch is in contact with the tripping rod; the flux converter iron core is connected with the push rod; and the tripper iron core is connected with the tripping rod. The locking and unlocking mechanism used for a circuit breaker has simple structure, low operating force and