Title:
CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/184058
Kind Code:
A1
Abstract:
The present invention provides a shock absorber serving as a cylinder device that makes it possible to ensure clearance between an outer cylinder and surrounding members, and to improve the flexural rigidity of the outer cylinder. Provided to an outer cylinder 104 accommodating an inner cylinder 103 are a pair of knuckle bracket fastening plates 110a, 110b that protrude out to one direction side from an outer surface of the outer cylinder 104. The pair of knuckle bracket fastening plates 110a, 110b are provided so as to have respective wide surfaces opposite each other, and so that the wide surfaces run along an axial direction of the outer cylinder 104. In an orthogonal cross-section at any location of the axial direction of the outer cylinder 104 orthogonal to a stroke centerline 71 of a piston rod 102, a cross-sectional area Ai1 of the outer cylinder 104 in an imaginary region I192 is greater than a cross-sectional area Ao1 of the outer cylinder 104 in an imaginary region II193, where the imaginary region I192 is inside a vehicle and the imaginary region II193 is outside the vehicle, the boundary being an imaginary line 191 that passes through the stroke centerline 71 and coincides with the vehicle inside and outside.
Inventors:
NAGAO RIICHI (JP)
YAMAKA KOICHI (JP)
YAMAGUCHI YOSHIHIRO (JP)
YAMAKA KOICHI (JP)
YAMAGUCHI YOSHIHIRO (JP)
Application Number:
PCT/JP2020/005740
Publication Date:
September 17, 2020
Filing Date:
February 14, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60G3/28; F16F9/32; F16F9/54
Foreign References:
| JPH03292427A | 1991-12-24 | |||
| JP2002089606A | 2002-03-27 | |||
| JP2001182772A | 2001-07-06 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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