DIRECT CURRENT RELAY AND MANUFACTURING METHOD THEREFOR

WIPO Patent Application WO/2020/241969

A1

Disclosed are a direct current relay and a manufacturing method therefor. A movable contact part provided in a direct current relay according to an embodiment of the present invention comprises a movable contact and a lower yoke positioned below the movable contact. The lower yoke is configured to attenuate an electromagnetic repulsive force generated by contact between the movable contact and a fixed contact. The movable contact is provided with a coupling protrusion portion that protrudes downward. The lower yoke is provided with a movable contact coupling portion into which the coupling protrusion portion is inserted. The coupling protrusion portion can receive pressure directed radially outward after being inserted into the movable contact coupling portion. The coupling protrusion portion is expanded radially outward by the pressure. Accordingly, the outer circumferential surface of the coupling protrusion portion can be inserted into and coupled to the inner circumferential surface of the lower yoke that forms the movable contact coupling portion. Thus, a separate fastening member for coupling the movable contact and the lower yoke is not required. Accordingly, a method for manufacturing the direct current relay can be simplified.

JP2000323323	PLUNGER TYPE MAGNET DEVICE
JPS5734630	POLARIZED RELAY

YOO JUNGWOO (KR)

PCT/KR2019/010552

December 03, 2020

August 20, 2019

Click for automatic bibliography generation  

LS ELECTRIC CO LTD (KR)

H01H50/36; H01H50/18

JP2018133347A	2018-08-23
JP2012199126A	2012-10-18
KR20160003787U	2016-11-02
US20170120568A1	2017-05-04
JP2009016276A	2009-01-22
KR101216824B1	2012-12-28
KR200456811Y1	2011-11-21

See also references of EP 3979289A4

PARK, Jang-Won (KR)

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