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Title:
SEAL MEMBER MANUFACTURING METHOD AND MOLDING MOLD
Document Type and Number:
WIPO Patent Application WO/2020/045072
Kind Code:
A1
Abstract:
In the present invention, a sealing device seals a gap between an inner member and an outer member that rotate relative to each other. The sealing device has a seal member. The seal member comprises: a rigid ring that is formed from a rigid material, and that includes a sleeve portion and a flange portion which expands radially outward from the sleeve portion; and an elastic ring that is formed from an elastic material and that adheres closely to both surfaces of the flange portion. The elastic ring has, on the side of the sleeve portion of the rigid ring, a ring-shaped circular portion and a plurality of water discharge protrusions, and has an annular portion on the side opposite the sleeve portion. A molding mold for manufacturing the seal member comprises a first molding mold which includes: a cylindrical space in which the sleeve portion is supported; a ring-shaped circular space for forming the circular portion; a plurality of protrusion spaces for forming the plurality of water discharge protrusions; and a plurality of support columns that are provided in the circular space and that contact the flange portion of the rigid ring.

Inventors:
KATO TAKUYA (JP)
SAKANO YUYA (JP)
Application Number:
PCT/JP2019/031761
Publication Date:
March 05, 2020
Filing Date:
August 09, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NOK CORP (JP)
International Classes:
F16J15/328; B29C33/12; B29C45/14; F16J15/18; F16J15/3244; F16J15/326; F16J15/3232
Domestic Patent References:
WO2018138981A12018-08-02
Foreign References:
JP2017223257A2017-12-21
JP2015068350A2015-04-13
JPS4512494Y11970-06-01
JP2015098881A2015-05-28
JP3991200B22007-10-17
Attorney, Agent or Firm:
KONISHI Kay et al. (JP)
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