US 11,942,291 B2
Motion sensing device for vacuum circuit breaker and vacuum circuit breaker comprising same
Yong-Jin Choi, Anyang-si (KR)
Assigned to LS ELECTRIC CO., LTD., Anyang-si (KR)
Appl. No. 17/602,151
Filed by LS ELECTRIC CO., LTD., Anyang-si (KR)
PCT Filed Mar. 9, 2020, PCT No. PCT/KR2020/003288
§ 371(c)(1), (2) Date Oct. 7, 2021,
PCT Pub. No. WO2020/209508, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. 10-2019-0040648 (KR), filed on Apr. 8, 2019.
Prior Publication US 2022/0148829 A1, May 12, 2022
Int. Cl. H01H 33/662 (2006.01); H01H 33/664 (2006.01); H01H 33/666 (2006.01)
CPC H01H 33/664 (2013.01) [H01H 33/662 (2013.01); H01H 33/6664 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A movement sensing device for a vacuum circuit breaker, wherein the vacuum circuit breaker includes a push rod assembly coupled to a movable electrode of a vacuum interrupter to raise up or lower down the movable electrode, wherein the movement sensing device comprises:
a sensor module spaced apart from the push rod assembly and facing toward one side of a rod housing; and
a sensing target disposed on one side of the push rod assembly and facing toward the sensor module, wherein the sensing target includes:
a slit body coupled along a longitudinal direction to one side of the rod housing;
a slit plate protruding outwardly along a longitudinal direction from an outer face of the slit body; and
a plurality of sensed slits passing through the slit plate.