Patent ID: 11929226
Assignee: ZHEJIANG CHINT ELECTRICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A miniature circuit breaker, comprising:
a circuit breaker housing,
a button mechanism slidably arranged on the circuit breaker housing,
an operating mechanism arranged inside the circuit breaker housing,
a moving contact, and
a static contact,
wherein the operating mechanism comprises:
a transmission member,
a second connecting rod,
a supporting member,
a buckle member,
a catch member,
a first reset spring, and
a switching-off rod,
wherein the supporting member is pivotally arranged on the circuit breaker housing, the transmission member, the catch member and the buckle member are pivotally arranged on the supporting member respectively, the button mechanism is drivingly connected with the transmission member through a first connecting rod, the transmission member is drivingly connected with the catch member through the second connecting rod, the catch member is in catch fit with the buckle member, the buckle member is in driving fit with the supporting member, the supporting member is elastically connected with the circuit breaker housing through the first reset spring, the supporting member is connected with the moving contact, the moving contact is matched with the static contact for use, the switching-off rod comprises a switching-off rod connecting end and a switching-off rod driving end, the switching-off rod connecting end is connected with the button mechanism, the switching-off rod driving end is in driving fit with the buckle member; when the miniature circuit breaker is in a switching-off state, the button mechanism is pressed to drive the operating mechanism to act, the operating mechanism drives the moving contact to be connected with the static contact, and meanwhile, the switching-off rod driving end is moved to a position matched with the buckle member; the button mechanism is pressed again, the switching-off rod driving end of the switching-off rod drives the buckle member to rotate, so that the buckle member is unlocked from the catch member, the operating mechanism acts and drives the moving contact to be disconnected from the static contact, the miniature circuit breaker enters the switching-off state, and meanwhile, the switching-off rod is reset to an initial position.