US 12,476,055 B2
Earthing switch
Keon Woo Kim, Seoul (KR); Ji Hoon Kim, Seoul (KR); and Seung Hwan Baik, Seoul (KR)
Assigned to Hyundai Electric & Energy Systems Co., Ltd., Seoul (KR)
Filed by Hyundai Electric & Energy Systems Co., Ltd., Seoul (KR)
Filed on Mar. 17, 2023, as Appl. No. 18/185,875.
Prior Publication US 2024/0312732 A1, Sep. 19, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01H 1/14 (2006.01); H01H 9/02 (2006.01); H01H 9/30 (2006.01)
CPC H01H 9/02 (2013.01) [H01H 1/14 (2013.01); H01H 9/30 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An earthing switch comprising:
a fixed contact part fixed in an enclosure;
a movable contact part disposed to face the fixed contact part, having a hollow portion formed therein, and having one end portion connected to a driving device and driven by the driving device so that the other end portion thereof is connected to or separated from the fixed contact part; and
a piston part located in the hollow portion and moving relative to the movable contact part,
wherein the hollow portion extends in a longitudinal direction of the movable contact part, both end portions of the hollow portion are formed to be open in the longitudinal direction,
wherein a wall portion separating the hollow portion and an outside is formed at the other end portion of the movable contact part, and
wherein a plurality of through-holes are formed in the wall portion in an oblique direction inclined with respect to the longitudinal direction of the movable contact part.