Title:
CUSHIONING DEVICE FOR RAILWAY VEHICLE
Document Type and Number:
WIPO Patent Application WO/2012/111300
Kind Code:
A1
Abstract:
[Problem] To provide a cushioning device which can absorb a shock of a normal magnitude and also can absorb a shock of an extremely large magnitude, is compact, and requires a small mounting area on a vehicle.
[Solution] A cushioning device (3) for a railway vehicle comprises a cylinder body (8), a piston (10) which is provided in the cylinder body (8) so as to be movable forward and backward, and a viscous fluid (11) which is sealed within the cylinder body (8). The cylinder body (8) comprises a first cylinder (6) which has one end open and a second cylinder (7) which has one end open and which is fitted over the opening of the first cylinder (6) with a predetermined fit tolerance in such a manner that the openings are liquid-tightly closed. The piston rod (18) of the piston (10) is inserted from the first cylinder (6) side, and a predetermined gap (22) is formed between the piston head (21) and the inner peripheral surface of the first cylinder (6).
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Inventors:
OKIMOTO TASUKU (JP)
TOGO HIROYUKI (JP)
TOGO HIROYUKI (JP)
Application Number:
PCT/JP2012/000932
Publication Date:
August 23, 2012
Filing Date:
February 13, 2012
Export Citation:
Assignee:
JAPAN STEEL WORKS LTD (JP)
OKIMOTO TASUKU (JP)
TOGO HIROYUKI (JP)
OKIMOTO TASUKU (JP)
TOGO HIROYUKI (JP)
International Classes:
B61G11/12; B61G11/16; F16F7/12; F16F15/023
Foreign References:
| JPH1120695A | 1999-01-26 | |||
| JP2007216719A | 2007-08-30 | |||
| JP2008254542A | 2008-10-23 | |||
| JPS61502392A | 1986-10-23 |
Attorney, Agent or Firm:
SUGITANI, Hiromichi et al. (JP)
Hiromichi Sugitani (JP)
Hiromichi Sugitani (JP)
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Claims: