EXPANSION JOINT APPARATUS

WIPO Patent Application WO/2018/084343

A1

An expansion joint apparatus is disclosed. An expansion joint apparatus according to the present invention may exhibit flexible movement so that an electrical connection of a rigid trolley bar that is installed in order to supply electrical power to an electric railcar in a tunnel section can efficiently be maintained, and electrical and mechanical continuity of the rigid trolley bar can stably be maintained regardless of expansion and shrinkage due to temperature changes. A stable electrical connection between a connection block of the expansion joint apparatus and rigid trolley bars can be maintained when the rigid trolley bars are electrically connected, connection failure can be prevented, and accumulation of foreign substances such as dust and the like in an electrical contact part can be prevented, thereby allowing product performance to be maintained for a long period and reliability to be guaranteed. In addition, the structure thereof is simplified compared to conventional structures, thereby improving maintainability as well as an electrical contact surface is large, and is thereby suitable for transferring high-current.

BAE SANG-JOON (KR)
WON YONG-HEE (KR)
KIM BONG-SUK (KR)
JANG KWANG-DONG (KR)
PARK SEOL-HEE (KR)

PCT/KR2016/012725

May 11, 2018

November 07, 2016

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LS CABLE & SYSTEM LTD (KR)

B60M1/30; B60L5/24; B60M1/13; B60M5/00

JP2000318493A	2000-11-21
JPH11192864A	1999-07-21
JP2002154352A	2002-05-28
EP3002151A1	2016-04-06
KR20070053841A	2007-05-28

MIN, Bokki et al. (KR)

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