Title:
UNIT-TYPE WAVE GEAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/033319
Kind Code:
A1
Abstract:
This unit-type wave gear device (1) is provided with a cross-roller bearing (5) that supports an internal gear (2) and an external gear (3) in a relatively rotatable manner, wherein a meshing portion (7) between the two gears (2, 3) is lubricated by a grease. In the outer circumference of the external gear (3), a gap (8) is formed which communicates with the meshing portion (7) and an orbital groove (53) of the cross-roller bearing (5). A portion of the grease pressed out from the meshing portion (70) to the gap (8) flows out through a through-hole (10) formed in the internal gear (2), and flows back to the meshing portion (7). The grease can be suppressed from leaking to the outside of the unit from an oil seal (9) of the cross-roller bearing (5).
More Like This:
| WO/2023/139636 | LUBRICATING STRUCTURE FOR GEAR TOOTH SURFACE |
| JP2023132224 | DIFFERENTIAL REDUCTION GEAR |
| JP2021124199 | BRAKE MECHANISM AND SPEED REDUCTION MECHANISM |
Inventors:
KANAYAMA NAOKI (JP)
Application Number:
PCT/JP2019/032887
Publication Date:
February 25, 2021
Filing Date:
August 22, 2019
Export Citation:
Assignee:
HARMONIC DRIVE SYSTEMS (JP)
International Classes:
F16H1/32; F16H57/04
Domestic Patent References:
| WO2014091522A1 | 2014-06-19 | |||
| WO2014203293A1 | 2014-12-24 |
Foreign References:
| US3482770A | 1969-12-09 | |||
| JP2018168956A | 2018-11-01 | |||
| JP3187367U | 2013-11-21 | |||
| JP4877804B2 | 2012-02-15 |
Other References:
See also references of EP 4019806A4
Attorney, Agent or Firm:
YOKOZAWA Shiro (JP)
Download PDF:
Previous Patent: GAS CHROMATOGRAPH MASS SPECTROMETER AND MASS SPECTROMETRY METHOD
Next Patent: ACTIVATED GAS GENERATION DEVICE
Next Patent: ACTIVATED GAS GENERATION DEVICE