Title:
SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2020/195011
Kind Code:
A1
Abstract:
This shock absorber has first damping force generation mechanisms (41, 42) provided to first passages (72, 92), and second damping force generation mechanisms (173, 183) provided to second passages (172, 182). The second damping force generation mechanisms (173, 183) are provided with a first valve seat (115) formed in a tube part (112) of a case member (107) having the tube part (112) and a bottom part (111), a disc valve (105) of which an outer peripheral separating/contacting part (151) is disposed so as to be capable of separating from and contacting the first valve seat (115), and a second valve seat (135) that is disposed on the side of the disc valve (105) opposite from the first valve seat (115) and that supports the side of the disc valve (105) that is radially inward from the separating/contacting part (151). The second passages (172, 182) have a piston rod passage part (51) formed as a cutout in or formed through a piston rod (21), and a chamber passage part (131) that communicates with a case inner chamber (165) from the piston rod passage part (51).
Inventors:
YAMASHITA MIKIO (JP)
SHINATA RYO (JP)
SHINATA RYO (JP)
Application Number:
PCT/JP2020/000676
Publication Date:
October 01, 2020
Filing Date:
January 10, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/348; F16F9/508
Domestic Patent References:
| WO2017038571A1 | 2017-03-09 |
Foreign References:
| JPH03123130U | 1991-12-16 | |||
| JP2014035050A | 2014-02-24 | |||
| JP2015132313A | 2015-07-23 | |||
| JPS58182029U | 1983-12-05 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
Download PDF: