Title:
SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2020/179678
Kind Code:
A1
Abstract:
A shock absorber (D) is provided with a cylinder (1), a piston (2) which is inserted into the cylinder (1) to demarcate the inside of the cylinder (1) into an expansion side chamber (La) and a compression side chamber (Lb), a piston rod (3) coupled to the piston (2), an attenuation passage (3a) provided in the piston rod (3) to provide communication between the expansion side chamber (La) and the compression side chamber (Lb), and an attenuation force adjusting valve (V) provided in the attenuation passage (3a), wherein: the attenuation force adjusting valve (V) includes an attenuation force adjusting portion (7) and a solenoid (9) which drives the attenuation force adjusting portion (7) to regulate a flow passage resistance; the piston rod (3) includes a yoke (31) into which the attenuation force adjusting valve (V) is inserted, and a piston holding member (30) fitted to the yoke (31); and the yoke (31) includes through holes (31c) which open from the side and communicate with the interior of the yoke (31), and grooves (31d) which are provided in an outer circumference, extend from the end on the opposite side to the piston, and communicate with the through holes (31c).
Inventors:
HAYASHIGUCHI TAKUMI (JP)
AWANO KOICHIRO (JP)
MOCHIZUKI TAKAHISA (JP)
SHIMAUCHI SODAI (JP)
AWANO KOICHIRO (JP)
MOCHIZUKI TAKAHISA (JP)
SHIMAUCHI SODAI (JP)
Application Number:
PCT/JP2020/008374
Publication Date:
September 10, 2020
Filing Date:
February 28, 2020
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F16K31/06; F16F9/32; F16F9/46
Foreign References:
| JP2013167304A | 2013-08-29 | |||
| JP2018514717A | 2018-06-07 | |||
| JP2013139865A | 2013-07-18 | |||
| JP2005351419A | 2005-12-22 |
Attorney, Agent or Firm:
ISHIKAWA Ken (JP)
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