Title:
LUBRICATING STRUCTURE FOR GEAR TOOTH SURFACE
Document Type and Number:
WIPO Patent Application WO/2023/139636
Kind Code:
A1
Abstract:
In the present invention, in each of tooth tip surfaces (202, 302) of internal teeth (20) of an internal gear (2) and external teeth (30) of an external gear (3) of a strain wave gearing (1), lubricant passage grooves (204, 304) are formed at fixed intervals along the tooth trace direction. Each of the lubricant passage grooves (204, 304) is an inclined groove that extends in a direction inclined to one side in the tooth trace direction. The inclined surface facilitates the flow of the lubricant such as grease confined in gaps (5, 6) between the internal teeth (20) and the external teeth (30) and thus the lubricant is efficiently supplied to the tooth surfaces of both teeth.
Inventors:
SHIROKOSHI NORIO (JP)
Application Number:
PCT/JP2022/001567
Publication Date:
July 27, 2023
Filing Date:
January 18, 2022
Export Citation:
Assignee:
HARMONIC DRIVE SYSTEMS (JP)
International Classes:
F16H57/04; F16H1/32
Foreign References:
| JP2021167650A | 2021-10-21 | |||
| JPH0798051A | 1995-04-11 | |||
| JP2005188740A | 2005-07-14 | |||
| JPH08178017A | 1996-07-12 | |||
| JPH0394455U | 1991-09-26 |
Attorney, Agent or Firm:
YOKOZAWA Shiro (JP)
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