SEAL STRUCTURE FOR FLUID PRESSURE DEVICE

Title:

SEAL STRUCTURE FOR FLUID PRESSURE DEVICE

Document Type and Number:

WIPO Patent Application WO/2019/244642

Kind Code:

A1

Abstract:

[Problem] To provide a seal structure for a fluid pressure device, which has low sliding resistance and in which trapping, seizure, etc. caused by protrusion from a mounting groove are unlikely to occur. [Solution] A seal structure 2 has a mounting groove 16 which is formed in a first member 5, and packing 8 which is contained in the mounting groove 16. The packing 8 has a mounting section 20 on the inner periphery, and a sliding section 21 on the outer periphery. Both the side surfaces 22a, 22b of the packing 8 are circular conical surfaces which are tilted so that the diameter increases gradually from the mounting section 20 side toward the sliding section 21 side, and which are tilted in the opposite directions. The thickness of the packing 8 increases gradually from the mounting section 20 side toward the sliding section 21 side. The thickness T1 of the mounting section 20 is the smallest, and the thickness T2 of the sliding section 21 is the largest.

Inventors:

KUDO MASAYUKI (JP)
TAKEDA KENICHI (JP)
KAWAKAMI MASAHIKO (JP)
TAMURA KEN (JP)
ODAKA TSUKASA (JP)

Application Number:

PCT/JP2019/022444

Publication Date:

December 26, 2019

Filing Date:

June 06, 2019

Export Citation:

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Assignee:

SMC CORP (JP)

International Classes:

F16J15/18; F16K11/07

Domestic Patent References:

WO2016052126A1

2016-04-07

Foreign References:

JPS55112159U	1980-08-07
JPS61228166A	1986-10-11
JPS5794760U	1982-06-10
JPS55102457U	1980-07-17
JPS61228166A	1986-10-11
JPS6291063U	1987-06-10
JPS62126663U	1987-08-11
JPH0436174U	1992-03-26
JPH07269733A	1995-10-20
JP2537236Y2	1997-05-28

Other References: