Title:
SEALING MECHANISM COMPRISING METAL SEALING
Document Type and Number:
WIPO Patent Application WO/2024/013954
Kind Code:
A1
Abstract:
A sealing mechanism (1) that seals an annular gap (4) between a housing (2) and a rotation shaft (3) comprises a metal sealing (10). A first shaft sliding surface (15), a labyrinth seal forming surface (16), and a second shaft sliding surface (17) are formed on a circular inner peripheral surface (11) of the sealing (10). The first and second shaft sliding surfaces (15, 17) are matte surfaces having a prescribed surface roughness. A labyrinth seal is formed between the labyrinth seal forming surface (16) and a circular outer peripheral surface (3a) of the rotation shaft (3). Making the first and second shaft sliding surfaces (15, 17) matte surfaces makes it possible to reduce the frictional resistance with the rotation shaft (3) and to suppress wear and heat generation in the first and second shaft sliding surfaces (15, 17). Furthermore, a sealing mechanism capable of preventing oil leakage in both axial directions can be obtained.
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Inventors:
TAKEDA TORU (JP)
YAMAGUCHI RYUTARO (JP)
YAMAGUCHI RYUTARO (JP)
Application Number:
PCT/JP2022/027772
Publication Date:
January 18, 2024
Filing Date:
July 14, 2022
Export Citation:
Assignee:
HARMONIC DRIVE SYSTEMS (JP)
International Classes:
F16J15/447
Domestic Patent References:
| WO2001027502A1 | 2001-04-19 |
Foreign References:
| JPH07158745A | 1995-06-20 | |||
| CN207064641U | 2018-03-02 | |||
| CN106949245A | 2017-07-14 |
Attorney, Agent or Firm:
YOKOZAWA Shiro (JP)
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