Title:
SUSPENSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/212002
Kind Code:
A1
Abstract:
An accumulator device provided connected to at least one connection pipeline out of first and second connection pipelines has: a first accumulator; a second accumulator connected in parallel to the first accumulator and having a large volume; a normally-closed first control valve provided on the upstream side of the second accumulator; and a fixed orifice positioned between the connection pipelines and the second accumulator and provided parallel to the first control valve. The flow path area of the fixed orifice is formed sufficiently small enough to restrict the flow of hydraulic fluid inside the connection pipeline caused by the stroke of hydraulic cylinders 1–4.
Inventors:
YAMAOKA FUMIYUKI (JP)
ARA TAKANORI (JP)
YAMANAKA TERUAKI (JP)
YAMASHITA MIKIO (JP)
ARA TAKANORI (JP)
YAMANAKA TERUAKI (JP)
YAMASHITA MIKIO (JP)
Application Number:
PCT/JP2019/017129
Publication Date:
November 07, 2019
Filing Date:
April 23, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60G21/073; B60G11/30
Foreign References:
| JP2009292334A | 2009-12-17 | |||
| JP2004217029A | 2004-08-05 | |||
| JPH02136319A | 1990-05-24 | |||
| JPH06509997A | 1994-11-10 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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