Patent ID: 11875954
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A motion sensing device for a vacuum circuit breaker,
wherein the breaker includes:
a push rod assembly including a push rod movable upwardly or downwardly to insert or withdrawn a vacuum interrupter; and
a main shaft having a first end pivotably coupled to a mechanism assembly and a second end coupled to an end of the push rod, wherein the main shaft transmits power generated from the mechanism assembly to the push rod,

wherein the motion sensing device comprises:
a sensor module installed adjacent to the main shaft for sensing a motion state of the main shaft; and
a bracket coupled to the sensor module and supporting the sensor module,

wherein the sensor module includes:
a circuit facing toward the main shaft; and
a light-emitter and a light-receiver disposed on the circuit and side by side,

wherein the light-emitter and the light-receiver face toward the main shaft,
wherein a plate plane of the main shaft is configured to reflect light emitting from the light-emitter for the light-receiver to receive as reflected light,
wherein the bracket is disposed on one side face of the main shaft,
wherein the motion sensing device further comprising a plurality of sensing slits extending through the main shaft, wherein the plurality of sensing slits is configured to permit the light emitting from the light-emitter to pass through the plurality of sensing slits, wherein the plurality of sensing slits are spaced apart from each other by a predefined spacing.