Title:
DIRECT CURRENT RELAY
Document Type and Number:
WIPO Patent Application WO/2020/256263
Kind Code:
A1
Abstract:
A direct current relay is disclosed. A direct current relay according to an embodiment of the present invention comprises a magnetism forming unit accommodated in a frame unit. The magnetism forming unit comprises a first magnet member and a second magnet member. A magnetism strengthening member is provided between the first magnet member and the second magnet member. The magnetism strengthening member strengthens the magnetic field formed between the first magnet member and the second magnet member. Therefore, the flow of the magnetic field formed inside an arc chamber is strengthened so as to effectively form an arc extinguishing path. The magnetism strengthening member can apply an electromagnetic attractive force to a movable core. Therefore, the movable core receives the electromagnetic attractive force according to magnetization of a fixed core, and also the electromagnetic attractive force from the magnetism strengthening member. Thus, since a driving force for moving the movable core increases, the operation reliability of the movable core can be improved.
Inventors:
PARK JINHEE (KR)
Application Number:
PCT/KR2020/004805
Publication Date:
December 24, 2020
Filing Date:
April 09, 2020
Export Citation:
Assignee:
LS ELECTRIC CO LTD (KR)
International Classes:
H01H50/44; H01H50/16
Foreign References:
| KR20110007655U | 2011-08-03 | |||
| KR20170003324U | 2017-09-26 | |||
| KR101116380B1 | 2012-03-09 | |||
| KR101902012B1 | 2018-11-07 | |||
| US20170162353A1 | 2017-06-08 | |||
| KR101216824B1 | 2012-12-28 | |||
| KR101661396B1 | 2016-09-29 |
Attorney, Agent or Firm:
PARK, Jang-Won (KR)
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