US 12,249,473 B2
Direct current relay and manufacturing method therefor
Jungwoo Yoo, Anyang-si (KR)
Assigned to LS ELECTRIC CO., LTD., Anyang-si (KR)
Appl. No. 17/612,389
Filed by LS ELECTRIC CO., LTD., Anyang-si (KR)
PCT Filed Aug. 20, 2019, PCT No. PCT/KR2019/010552
§ 371(c)(1), (2) Date Nov. 18, 2021,
PCT Pub. No. WO2020/241969, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 10-2019-0063321 (KR), filed on May 29, 2019.
Prior Publication US 2022/0208494 A1, Jun. 30, 2022
Int. Cl. H01H 50/18 (2006.01); H01H 50/02 (2006.01); H01H 50/36 (2006.01); H01H 50/54 (2006.01)
CPC H01H 50/18 (2013.01) [H01H 50/02 (2013.01); H01H 50/36 (2013.01); H01H 50/546 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A Direct Current (DC) relay comprising:
a fixed contactor;
a movable contactor brought into contact with or separated from the fixed contactor to be electrically connected to or disconnected from the fixed contactor;
a lower yoke located on a lower side of the movable contactor to cancel electromagnetic repulsive force generated between the fixed contactor and the movable contactor,
wherein a coupling protrusion having a predetermined diameter protrudes from the lower side of the movable contactor,
wherein the lower yoke has an elastic member support portion formed in a lower portion of the lower yoke, a movable contactor coupling portion formed in an upper portion of the lower yoke and connected to the elastic member support portion, and a yoke inner circumferential surface of the movable contactor coupling portion is formed smaller than a main inner surface of the elastic member support portion,
wherein the coupling protrusion is expanded radially outward to be fitted to the movable contactor coupling portion when radially outward pressure is applied after the coupling protrusion is inserted into the movable contactor coupling portion; and
wherein the coupling protrusion is formed coaxially with a central portion of the movable contactor.