Title:
STRAIN WAVE GEAR DEVICE EQUIPPED WITH ROLLER BEARING TYPE WAVE GENERATOR
Document Type and Number:
WIPO Patent Application WO/2020/234945
Kind Code:
A1
Abstract:
A wave generator (4) of a strain wave gear device (1) is equipped with a plurality of rollers (51) mounted between an elliptical outer peripheral surface (42) of a plug (40) and an inner peripheral surface (36a) of an external gear (3). A recess (43) is formed in the plug (40) along the elliptical outer peripheral surface (42). The recess (43) opens at a first end face (44) of the plug (40) facing a diaphragm (32) side of the external gear (3). The rigidity of the plug (40) in the radial direction is relatively lower at the first end face (44) side in the direction of the plug axis (4a). The rollers (51) can be brought in line contact with the inner peripheral surface of the external gear (3) at a major-axis (Lmax) position of the external gear (3) when deformed in an elliptical shape, as seen along the plug axis (4a) direction. such that a state of one-sided contact does not occur thereat.
Inventors:
KOBAYASHI MASARU (JP)
Application Number:
PCT/JP2019/019787
Publication Date:
November 26, 2020
Filing Date:
May 17, 2019
Export Citation:
Assignee:
HARMONIC DRIVE SYSTEMS (JP)
International Classes:
F16H1/32
Domestic Patent References:
| WO2016079876A1 | 2016-05-26 | |||
| WO1998053224A1 | 1998-11-26 | |||
| WO2016129123A1 | 2016-08-18 |
Foreign References:
| JP2003176857A | 2003-06-27 |
Attorney, Agent or Firm:
YOKOZAWA Shiro (JP)
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