Title:
SEALING DEVICE AND SEALING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2013/137199
Kind Code:
A1
Abstract:
Provided is a sealing device that, while suppressing sliding torque to a low level, can exert a sealing functionality even in a state of fluid pressure being low or a state of fluid pressure being nonexistent. The present invention is characterized by being provided with: a resin outer peripheral ring (2000) that is adhered to the lateral wall surface of a low-pressure side (L) in an annular groove (4100), and that slides with respect to the inner peripheral surface of a shaft hole through which a shaft (4000) is threaded in a housing (5000); and an inner peripheral ring (3000) that is made from a rubber elastic body, is adhered to both the inner peripheral surface of the outer peripheral ring (2000) and the groove floor surface of the annular groove (4100), and presses the outer peripheral ring (2000) to the outer peripheral surface side. The present invention is further characterized by the outer peripheral surface of the outer peripheral ring (2000) having a concavity (2220) formed that extends from the end of a high-pressure (H) side to a position that does not reach the end of the low-pressure side, and introduces a fluid from the high-pressure side.
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| JP2022012561 | FLUID OUTFLOW PREVENTION MECHANISM |
Inventors:
SEKI KAZUNARI (JP)
WATANABE KOJI (JP)
TOKUNAGA WATARU (JP)
TAKAO YUKI (JP)
XU FANGMAN (JP)
MIZUTA HIROTAKA (JP)
NAKASHIMA KEISUKE (JP)
IGAWA TAKUYA (JP)
YOSHIDA YUSUKE (JP)
WATANABE HIDEYA (JP)
KONDO YOSUKE (JP)
WATANABE KOJI (JP)
TOKUNAGA WATARU (JP)
TAKAO YUKI (JP)
XU FANGMAN (JP)
MIZUTA HIROTAKA (JP)
NAKASHIMA KEISUKE (JP)
IGAWA TAKUYA (JP)
YOSHIDA YUSUKE (JP)
WATANABE HIDEYA (JP)
KONDO YOSUKE (JP)
Application Number:
PCT/JP2013/056658
Publication Date:
September 19, 2013
Filing Date:
March 11, 2013
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
F16J15/18
Domestic Patent References:
| WO2010084853A1 | 2010-07-29 | |||
| WO2010116932A1 | 2010-10-14 |
Foreign References:
| JPH08254272A | 1996-10-01 | |||
| JPH0466459U | 1992-06-11 | |||
| JPH0388062U | 1991-09-09 | |||
| JPH09217836A | 1997-08-19 | |||
| JP2010175014A | 2010-08-12 | |||
| JP4665046B1 | 2011-04-06 | |||
| JP2011144847A | 2011-07-28 | |||
| JP2010265937A | 2010-11-25 |
Other References:
See also references of EP 2827027A4
Attorney, Agent or Firm:
SERA Kazunobu et al. (JP)
Kazunobu Sera (JP)
Kazunobu Sera (JP)
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