Title:
SEALING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/244839
Kind Code:
A1
Abstract:
Provided is a sealing device in which a torque applied to a rotating member is small and in which the wear of lips and a temperature rise due to frictional heat are suppressed. A sealing device (20) is disposed between a fixed inner-side member and a rotating outer-side member to seal a gap between the inner-side member and the outer-side member. A first sealing member (30) of the sealing device (20) has a sleeve (31A) mounted to the inner-side member and a flange (31B) expanding radially outward from the sleeve (31A). A second sealing member (40) of the sealing device (20) has a tubular portion (44) disposed on the radially outer side of the flange and mounted to the outer-side member, a disc portion (45) expanding radially inward from the tubular portion (44) and opposed to the flange (31B), radial lips (46, 47) disposed on the radially inner side of the disc portion (45) in slidable contact with the sleeve (31A), and a side lip (48) extending from the disc portion (45) toward the flange (31B). The side lip (48) of the second sealing member (40) is brought into slidable contact with the flange (31B) when the rotational speed of the outer-side member is lower than a threshold value and is deformed so as to be apart from the flange (31B) when the rotational speed of the outer-side member is higher than the threshold value.
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Inventors:
TARUKAWA YUICHI (JP)
HIROTA KAZUKI (JP)
HIROTA KAZUKI (JP)
Application Number:
PCT/JP2022/020816
Publication Date:
November 24, 2022
Filing Date:
May 19, 2022
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
F16C33/78; F16J15/3232; F16J15/3256
Domestic Patent References:
| WO2006085651A1 | 2006-08-17 | |||
| WO2020090484A1 | 2020-05-07 |
Foreign References:
| JP2010159792A | 2010-07-22 | |||
| JP2001304278A | 2001-10-31 | |||
| JP2017133532A | 2017-08-03 |
Attorney, Agent or Firm:
NINOMIYA Hiroyasu et al. (JP)
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