Title:
CYLINDER DEVICE
Document Type and Number:
Japanese Patent JP2019173800
Kind Code:
A
Abstract:
To provide a cylinder device which can optimize a valve characteristic.SOLUTION: A cylinder device comprises a valve 123 placed on a first seat part 77 and a second seat part 76, and opening and closing a flow passage 72, and a resistance member 145 located at a side in a direction in which the flow passage 72 of the valve 123 is opened. The resistance member 145 has a spring member 114, and a pressing member 113 which opposes the spring member 114 at one side face, opposes the valve 123 at the other side face, and is seated on either of the first seat part 77 and the second seat part 76 at the valve-closing of the valve 123. When a piston speed is low, the valve 123 separates from one of sides of a first seat part 77 and a second seat part 76 on which the pressing member 113 is not seated, and when the piston speed is higher than the low speed, the valve separates from the other of the sides of the first seat part 77 and the second seat part 76 on which the pressing member 113 is seated.SELECTED DRAWING: Figure 6
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Inventors:
YAMAOKA FUMIYUKI
Application Number:
JP2018060251A
Publication Date:
October 10, 2019
Filing Date:
March 27, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
F16F9/508; F16F9/32
Domestic Patent References:
| JPH09291961A | 1997-11-11 | |||
| JPH06137358A | 1994-05-17 | |||
| JPS56116940A | 1981-09-14 | |||
| JPH02271123A | 1990-11-06 | |||
| JP2014013084A | 2014-01-23 |
Attorney, Agent or Firm:
Shiga International Patent Office