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Patent Searching and Data


Title:
PRESSURE-DAMPING DEVICE AND DAMPING FORCE GENERATION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2019/069413
Kind Code:
A1
Abstract:
This hydraulic damping device comprises: a first cylinder that accommodates a fluid; a piston body 30 in which is formed an extension-side oil passage 312, through which oil flows along with the relative movement of a piston rod 21 in the axial direction of the first cylinder; and an extension-side damping valve 51 that opens and closes the extension-side oil passage 312 of the piston body 30. The extension-side damping valve 51 has: a valve plate, which closes the extension-side oil passage 312 by covering the extension-side oil passage 312 and opens the extension-side oil passage 312 by deforming due to pressure from the oil; and a preload member, which is provided an annular part formed into an annular shape and an axial alignment part that protrudes from the outer periphery of the annular part and enables axial alignment by coming into contact with the piston body 30, and which imparts a preload to the valve plate.

Inventors:
NAKANO, Gota (1-14-1 Fujiwara-cho, Gyoda Cit, Saitama 06, 〒3618506, JP)
SHINOZAKI, Tomoaki (1-14-1 Fujiwara-cho, Gyoda Cit, Saitama 06, 〒3618506, JP)
Application Number:
JP2017/036187
Publication Date:
April 11, 2019
Filing Date:
October 04, 2017
Export Citation:
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Assignee:
SHOWA CORPORATION (1-14-1, Fujiwara-cho Gyoda Cit, Saitama 06, 〒3618506, JP)
International Classes:
F16F9/348
Foreign References:
JP2014047829A2014-03-17
JP2000000009U2000-01-28
JPS6099341U1985-07-06
JP2006070991A2006-03-16
JPH02101144U1990-08-13
JPH01149035U1989-10-16
JP2007506055A2007-03-15
Attorney, Agent or Firm:
FURUBE, Jiro et al. (SERIO PATENT & TRADEMARK ATTORNEYS, Ark Mori Building 22Fl. P.O.Box 513, 1-12-32, Akasaka, Minato-k, Tokyo 22, 〒1076022, JP)
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