Title:
SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2023/199648
Kind Code:
A1
Abstract:
This shock absorber includes a cylinder, a piston, a piston rod, a first passage, a first damping force generation mechanism, a second passage, and a second damping force generation mechanism. The first damping force generation mechanism includes: a first valve which has a radially inward side fixed from both sides in an axial direction and which is disposed to close the first passage; and one or a plurality of second valves each of which has a fixed portion on the radially inward side fixed together with the first valve from both ends in the axial direction and each of which generates a biasing force toward a direction of closing the first passage. Each second valve is formed so as to have a diameter larger than an inner diameter of a seat portion provided on an outer circumference side of the first passage, and a deflection promoting part is formed in at least one of the second valves to promote more axial deflection on the radially outside than on the radially inside in a portion on radially outside the fixed part.
Inventors:
KOTANI TAKAMASA (JP)
Application Number:
PCT/JP2023/008537
Publication Date:
October 19, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16F9/34
Foreign References:
| JP2020002976A | 2020-01-09 | |||
| JP2004125023A | 2004-04-22 | |||
| JPH0663949U | 1994-09-09 | |||
| JPH01135936A | 1989-05-29 | |||
| JP2000266101A | 2000-09-26 | |||
| JP2001041271A | 2001-02-13 | |||
| JP2012215220A | 2012-11-08 | |||
| JP2016510867A | 2016-04-11 | |||
| JP2021076139A | 2021-05-20 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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