Title:
SEAL RING AND VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/020034
Kind Code:
A1
Abstract:
A seal ring (4) is made from resin, is applied to a valve body (3) that varies the degree of opening of a fluid passage (20) through which a fluid passes, and forms a seal between an inner circumferential surface (211) and an outer circumferential edge (31) of the valve body which form the fluid passage when the valve body is fully closed. The seal ring is provided with a ring body part (41), which is fitted into an outer circumferential groove (32) formed in the outer circumferential edge, and a protruding part (42), which is provided on the ring body part, extends in the circumferential direction of the ring body part, and protrudes from the ring body part toward the outer circumferential groove. The outer circumferential groove has a groove bottom surface (321) that opposes the inner circumferential surface when the valve body is fully closed, and a pair of groove side surfaces (322, 323) continuous with the groove bottom surface and opposing one another. The ring body part has a pair of groove-opposing surfaces (413, 414) at least a portion of which faces the pair of groove side surfaces. The protruding part is provided on at least one of the pair of groove-opposing surfaces.
Inventors:
INAGAKI NORIYUKI (JP)
Application Number:
PCT/JP2020/026292
Publication Date:
February 04, 2021
Filing Date:
July 03, 2020
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F16K1/226; F16J15/18; F16J15/3272
Foreign References:
| JP2010216632A | 2010-09-30 | |||
| JP2015094335A | 2015-05-18 | |||
| JP2007292296A | 2007-11-08 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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