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Title:
CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/261941
Kind Code:
A1
Abstract:
A stopper mechanism (14) is constituted by a second cylinder (15), which is provided so as to be mobile relative to a piston rod (7) and which includes a base part (15A) on a rod guide (9) side of an inner tube (5) and a tube part (15B) extending from the bottom part (15A), and a second piston (21) provided so as to be capable of fitting into the second cylinder (15) by moving in response to movement of the piston rod (7). A spring member (12), an upper end of which is positioned on a rod guide (9) side and a lower end of which is fixed to the second cylinder (15), is provided between the second cylinder (15) and the rod guide (9). A bushing (19) which slides against the piston rod (7) is provided between the piston rod (7) and the second cylinder (15). An annular gap (20A) is formed between the inner tube (5) and the second cylinder (15).

Inventors:
SEKINE CHIGAYA (JP)
YAMAMOTO SATSUKI (JP)
Application Number:
JP2020/022341
Publication Date:
December 30, 2020
Filing Date:
June 05, 2020
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60G13/08; F16F9/32; F16F9/58
Domestic Patent References:
WO2017002595A12017-01-05
Foreign References:
JP2015072052A2015-04-16
JPS5582834A1980-06-21
JP2011094749A2011-05-12
JPH0586051U1993-11-19
Attorney, Agent or Firm:
HIROWA PATENT FIRM (JP)
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