Title:
DAMPING FORCE-ADJUSTING SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2017/221967
Kind Code:
A1
Abstract:
Provided is a damping force-adjusting shock absorber capable of making the dynamic characteristics of a movable core during displacement favorable. An electromagnetic damping force-adjusting device 17 of a damping force-adjusting hydraulic shock absorber 1 is configured from a damping force-adjusting valve 18 for generating the damping force and a solenoid 33 for variably adjusting the generated damping force. The solenoid 33 is provided with: a coil 39 for generating a magnetic force by the passage of electricity; a movable core 43 disposed on the inside of the coil 39 and provided so as to be movable in the axial direction; an anchoring member 40 for attracting the movable core 43; etc. The movable core 43 is configured from a thick-walled cylinder section 43A in which an anchoring hole 43A1 for anchoring a shaft 44 is provided and a tapered cylinder section 43B, the inner circumferential surface of which expands in a tapered fashion. Around the anchoring hole 43A1, concavities 43A2 that allow working fluid to flow through in the axial direction of the movable core 43 are formed.
Inventors:
MORI SHUNSUKE (JP)
MURAKAMI HIROSHI (JP)
MURAKAMI HIROSHI (JP)
Application Number:
PCT/JP2017/022813
Publication Date:
December 28, 2017
Filing Date:
June 21, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/46; F16F9/34; F16F9/48
Foreign References:
| JP2013213588A | 2013-10-17 | |||
| JPS59160969U | 1984-10-27 | |||
| JP2011038630A | 2011-02-24 | |||
| JPH0635758U | 1994-05-13 | |||
| JPH02248784A | 1990-10-04 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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