Title:
PRESSURE PULSATION REDUCTION DEVICE AND PULSATION DAMPING MEMBER FOR HYDRAULIC PRESSURE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/195415
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a novel pressure pulsation reduction device for a hydraulic system that reduces stress occurring in a metal diaphragm and that has excellent durability. A plurality of concentric circular recesses (25A, 27A) protruding toward a space inside a pulsation damping member are formed in one metal diaphragm (17A), a plurality of concentric circular recesses (25B, 27B) protruding toward the space inside the pulsation damping member are similarly formed in another metal diaphragm (17B), and when a prescribed amount of pressure acts on both metal diaphragms, at least one recess (25A, 27A) of the one metal diaphragm and at least one recess (25B, 27B) of the other metal diaphragm come into contact with each other.
Inventors:
KAI RYU (JP)
ITO TAKAHIRO (JP)
SETO SHINJI (JP)
YOKOYAMA ATSUSHI (JP)
KURAGAKI SATORU (JP)
KOIZUMI TOSHIHIRO (JP)
ITO TAKAHIRO (JP)
SETO SHINJI (JP)
YOKOYAMA ATSUSHI (JP)
KURAGAKI SATORU (JP)
KOIZUMI TOSHIHIRO (JP)
Application Number:
PCT/JP2017/004215
Publication Date:
November 16, 2017
Filing Date:
February 06, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60T17/00; F16J3/02; F16J15/52
Domestic Patent References:
| WO2013042472A1 | 2013-03-28 |
Foreign References:
| JP2004138071A | 2004-05-13 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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