Title:
GAS SPRING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/204068
Kind Code:
A1
Abstract:
The present invention reduces the sliding resistance of a push rod part with respect to a piston rod part and thus improves the movability of the push rod part. A push rod part 12 has a valve member 13 that opens and closes a communication path 9 communicating between an upper oil chamber B and a lower oil chamber C formed in a cylinder 2. In the push rod part 12, the lower end of a rod member 14, which is the end opposite from a piston 7, is formed to serve as a cap member 15 and is thus formed of a resin material.
Inventors:
SUDA TAKAYOSHI (JP)
TAKAIWA SATOSHI (JP)
TAKAIWA SATOSHI (JP)
Application Number:
PCT/JP2017/018622
Publication Date:
November 30, 2017
Filing Date:
May 18, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/00; F16F9/56
Foreign References:
| JPS52129896U | 1977-10-03 | |||
| JPS6221160Y2 | 1987-05-29 | |||
| JP2011005951A | 2011-01-13 | |||
| JPH10205570A | 1998-08-04 | |||
| JP2002002591A | 2002-01-09 | |||
| JPH01320516A | 1989-12-26 | |||
| JPS6351944U | 1988-04-07 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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