# US 10,320,095 B2 · Earthing structure of earthing truck > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,320,095 B2 - Document ID: US10320095B2 - Status: Granted - Kind: B2 - Application number: 15/863,291 - Filed: 2018-01-05 - Published: 2018-08-02 - Granted: 2019-06-11 - Earliest claimed: 2017-01-31 - Assignees: Lsis Co., Ltd. - Applicants: Lsis Co., Ltd. - Inventors: Kwanseung An; Jongdoo Kim - Web page: https://patentgrep.com/patent/US10320095B2 ## CPC - H01R 4/66: Connections with the terrestrial mass, e.g. earth plate, earth pin - H02B 1/16: Earthing arrangements (earthing arrangements for substations H02B5/01; earthing arrangements for switchgear H02B11/28, H02B13/075) - H02B 1/20: Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards (installations of bus-bars H02G5/00) - H02B 11/28: Earthing arrangements - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - H02B: BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER ## Abstract Provided is an earthing structure of an earthing truck that includes a frame with a terminal connection part and a moving part configured to support the frame and is configured to ground a bus or a cable while the moving part moves. The structure including: an earthing plate provided on a lower surface of the moving part; and an earthing member configured to provide a contact pressure to the earthing plate as it contacts the earthing plate when the moving part moves. ## Claims ### Claim 1 An earthing structure of an earthing truck that comprises a frame with a terminal connection part and a moving part configured to support the frame and that is configured to ground a bus or a cable while the moving part moves, the structure comprising: an earthing plate provided on a lower surface of the moving part; and an earthing member configured to provide a contact pressure to the earthing plate as the earthing member contacts the earthing plate when the moving part moves, wherein the earthing member comprises: an earthing board configured to move downward through the earthing plate according to a movement of the moving part; and at least one elastic member positioned below the earthing board and configured to provide an elastic force upward when the earthing board moves downward to provide a contact pressure between the earthing plate and the earthing board. ### Claim 2 (depends on 1) The earthing structure of claim 1, wherein the earthing member is installed on a bottom surface of a distribution panel cutoff chamber. ### Claim 3 (depends on 1) The earthing structure of claim 1, wherein the earthing board is formed by stacking a plurality of copper boards. ### Claim 4 (depends on 1) The earthing structure of claim 1, wherein the earthing board compresses the elastic member while bent downward as the earthing plate closely contacts according to a movement of the moving part and the earthing board returns to its original position through the elastic member when the close contact with the earthing plate is released according to a movement of the moving part. ### Claim 5 (depends on 4) The earthing structure of claim 4, wherein the earthing board comprises: a contact board where the earthing plate closely contacts; and an inclined board formed inclined downward at both ends of the contact board and bent when the earthing plate closely contacts. ### Claim 6 (depends on 5) The earthing structure of claim 5, wherein a connection board extending in a horizontal direction to be connected to a bus bar for earthing is formed on the inclined board. ### Claim 7 (depends on 6) The earthing structure of claim 6, wherein: a breakage prevention member is provided at an upper end of the contact board to prevent a breakage when the earthing plate and the earthing board contact; at least one earthing board connection hole for connection with the bus bar is formed in the connection plate; and at least one bus bar connection hole is formed in the bus bar to correspond to the earthing board connection hole, wherein a fastening member penetrates the earthing board connection hole and the bus bar to allow the earthing board and the bus bar to be interconnected. ### Claim 8 (depends on 7) The earthing structure of claim 7, wherein: a guide board formed inclined downward to contact the inclined board is formed at one end of the breakage prevention member; and a round part is formed between the breakage prevention member and the guide board. ### Claim 9 (depends on 7) The earthing structure of claim 7, wherein a first fixing member for fixedly supporting the elastic member upward is provided below the elastic member. ### Claim 10 (depends on 4) The earthing structure of claim 4, wherein a first fixing member for fixedly supporting the elastic member upward is provided below the elastic member. ### Claim 11 (depends on 10) The earthing structure of claim 10, wherein a second fixing member for fixedly supporting the elastic member downward is provided on a lower surface of the contact board, wherein: a seating part positioned to contact one end of the elastic member and seated and an upper protrusion protruding upward from the seating part, to which one side of the elastic member is inserted and fixed, are formed on the first fixing member; and a connection part positioned on a lower surface of the contact board and connected to the contact board and a lower protrusion protruding downward from the connection part, to which the other side of the elastic member is inserted and fixed, are formed on the second fixing member. ### Claim 12 (depends on 1) The earthing structure of claim 1, further comprising a terminal connection bar connected to the terminal connection part and the earthing plate to electrically connect the terminal connection part and the earthing plate.