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1. (WO2018143030) ACCUMULATOR

Pub. No.:    WO/2018/143030    International Application No.:    PCT/JP2018/002111
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Thu Jan 25 00:59:59 CET 2018
IPC: F15B 1/14
Inventors: ARIKAWA Tatsuhiro
有川 達浩
An accumulator which achieves a long service life without the need for special processing on the seal member is provided. By fixing a bellows 3, configured from a bellows main body 31 and a bellows cap 32, to a housing 2, the inside of the housing 2 is hermetically partitioned between the inside and outside of the bellows 3; a seal member 35, which is formed by covering a circular plate substrate 36 with an elastic member 37, is held on the bellows cap 32 by means of a holding unit 34c of an annular seal holder 34, on the inner diameter side thereof; and a fluid inlet/outlet 24 is closed through close contact of the seal member 35 on the seal surface 25 of the housing 2, wherein through-holes 38, 38… are provided penetrating in the radial direction through the seal holder 34, and, in the seal holder 34 or the seal surface 25, communication passages 39, 39… are provided extending in the radial direction so as to form a space A1 that allows communication between the through-holes 38, 38… and the fluid inlet/outlet 24.