Patent ID: 6671159
Filing Date: 2003-12-30
Classification: H01H

Abstract:
A power source breaker, said power source breaker having a pair of terminals intervened in a power supply circuit connecting a battery of a road vehicle to loads, and a shaft contacting with and disconnecting from these terminals in sliding movement, said shaft moving from the initial position where each of said terminals is set in a connected state with each other to the isolated position where each of said terminals is set in a released state with each other, resulting in isolation of said power supply circuit, comprising:a release spring which forcedly provides said shaft with pushing force for moving said shaft sliding along the arrangement direction of each of said terminals; a lock linked with said shaft; a reset spring which forcedly provides said lock with pushing force for constraining the sliding movement of said shaft; a linear actuator which operates to generate larger pushing force beyond the pushing force of said reset spring; and A lock liberating means for liberating said shaft from the constrained state of the sliding movement; wherein said lock liberating means is connected with said linear actuator and said lock, and during the operation of said linear actuator the lock is forcedly provided with the pushing force of said linear actuator in the opposite direction of the pushing force of said reset spring.