Title:
CYLINDER DEVICE AND VIBRATION DAMPING DEVICE FOR RAILWAY VEHICLE
Document Type and Number:
WIPO Patent Application WO/2019/044808
Kind Code:
A1
Abstract:
A cylinder device (C1) according to the present invention comprises: a cylinder (2); a rod (4) inserted into the cylinder (2); a piston (3) that is slidably inserted into the cylinder (2), is connected to the rod (4) and partitions the inside of the cylinder (2) into a rod-side chamber (5) and a piston-side chamber (6); a tank (8); a discharge passage (21) that causes the rod-side chamber (5) to communicate with the tank (8); a relief valve (22) provided in the discharge passage (21); and an attenuation unit (23) that causes a larger pressure loss than the relief valve (22) when the speed of the piston (3) relative to the cylinder (2) becomes equal to or higher than a predetermined speed.
Inventors:
NEGISHI HISAKO (JP)
OGAWA TAKAYUKI (JP)
ISHII DAISUKE (JP)
OGAWA TAKAYUKI (JP)
ISHII DAISUKE (JP)
Application Number:
PCT/JP2018/031701
Publication Date:
March 07, 2019
Filing Date:
August 28, 2018
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F16F9/46; B61F5/24; B61F9/00; F15B21/04
Foreign References:
| JP2014189216A | 2014-10-06 | |||
| JP2016060438A | 2016-04-25 | |||
| JP2008284885A | 2008-11-27 | |||
| JP2011032849A | 2011-02-17 |
Attorney, Agent or Firm:
ISHIKAWA Ken et al. (JP)
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