Title:
HYDRAULIC DAMPER
Document Type and Number:
WIPO Patent Application WO/2020/022331
Kind Code:
A1
Abstract:
This hydraulic damper comprises a core and a bladder. The core has a base and a first outer peripheral surface that protrudes in a first direction from the base and that is smooth from a side part to a tip end. The bladder is configured from an elastic material, and the bladder has an inner peripheral surface that covers the first outer peripheral surface such that a gas is sealed in between the first outer peripheral surface and the inner peripheral surface, and a second outer peripheral surface on which hydraulic pressure is exerted. A recessed part is provided in the first outer peripheral surface so that when hydraulic pressure is exerted on the second outer peripheral surface, the first outer peripheral surface comes into contact with part of the inner peripheral surface but does not come into contact with all of the inner peripheral surface. The first outer peripheral surface includes a curved surface and does not include a flat surface orthogonal to the first direction except for the tip end.
Inventors:
YOSHIOKA TERUYUKI (JP)
NISHIJIMA TAKURO (JP)
NISHIJIMA TAKURO (JP)
Application Number:
PCT/JP2019/028846
Publication Date:
January 30, 2020
Filing Date:
July 23, 2019
Export Citation:
Assignee:
ADVICS CO LTD (JP)
International Classes:
F04B11/00; B60T8/48; B60T17/04; F15B1/08; F16L55/05
Domestic Patent References:
| WO2018097235A1 | 2018-05-31 |
Foreign References:
| JPH11508854A | 1999-08-03 | |||
| JP2015222109A | 2015-12-10 | |||
| JPH09132126A | 1997-05-20 | |||
| DE102014224828A1 | 2016-06-09 | |||
| JPS61175601U | 1986-11-01 | |||
| JPH08216853A | 1996-08-27 |
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