Title:
緩衝器
Document Type and Number:
Japanese Patent JP7378634
Kind Code:
B2
Abstract:
This shock absorber has a first damping force characteristic that is exhibited when a piston speed is from a low-speed region to a high-speed region while a relative position of a piston with respect to a cylinder is in a first range during a low frequency, a second damping force characteristic greater than the first damping force characteristic is exhibited when the piston speed is from the low-speed region to the high-speed region while the relative position is in a second range different from the first range during a low frequency, and a difference in damping force characteristic between during the first range and during the second range is smaller than a difference between the first damping force characteristic and the second damping force characteristic during a high frequency. A second passage is provided with a variable orifice mechanism with a changeable orifice area based on relative position.
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| JP4417822 | Buffer |
Inventors:
Mikio Yamashita
Application Number:
JP2022555346A
Publication Date:
November 13, 2023
Filing Date:
September 21, 2021
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
F16F9/48; B60G13/08; F16F9/32; F16F9/348; F16F9/508
Domestic Patent References:
| JP2011043220A | ||||
| JP2015068439A |
Foreign References:
| WO2018062150A1 | ||||
| WO2014045965A1 | ||||
| WO2017047661A1 |
Attorney, Agent or Firm:
Patent Attorney Shiga International Patent Office