Title:
PLANETARY GEAR REDUCER
Document Type and Number:
WIPO Patent Application WO/2023/238400
Kind Code:
A1
Abstract:
Provided is a reducer that is rigid with a small number of parts and is configured to be short in the axial direction. Provided is a reducer (W1), comprising: an input shaft (10) having an eccentric portion (12); a fixed sun gear (20) formed from an external gear that is coaxial with the input shaft (10); a first planetary gear (31) having an internal gear meshing with the fixed sun gear (20) and provided on the eccentric portion (12) of the input shaft (10); a driven sun gear (40) disposed on the same axis as the axis of rotation of the input shaft (10) and formed from an external gear that outputs a reduction output; and a second planetary gear (33) having an internal gear meshing with the driven sun gear (40) and provided on the eccentric portion (12) of the input shaft (10), wherein the first planetary gear (31) and the second planetary gear (33) are formed integrally in the axial direction and configure a planetary gear train (30). By configuring a pair of planetary gears of a 2KH type hypocycloid reducer from internal gears, the shaft length can be shortened and a large reduction ratio can be achieved.
More Like This:
| JP2009024738 | ECCENTRIC OSCILLATING TYPE GEAR DEVICE |
| WO/2020/177156 | THIRD HARMONIC REDUCER |
Inventors:
KAMEDA MICHIHIRO (JP)
KIMORI TAKATOSHI (JP)
KIMORI TAKATOSHI (JP)
Application Number:
PCT/JP2022/023515
Publication Date:
December 14, 2023
Filing Date:
June 10, 2022
Export Citation:
Assignee:
NITTAN CORP (JP)
International Classes:
F16H1/32
Domestic Patent References:
| WO2018135552A1 | 2018-07-26 |
Foreign References:
| JP2013142459A | 2013-07-22 | |||
| JPS62140249U | 1987-09-04 | |||
| JP2014062589A | 2014-04-10 | |||
| JP2020060243A | 2020-04-16 | |||
| EP0429702A1 | 1991-06-05 |
Attorney, Agent or Firm:
YAGI Hidehito et al. (JP)
Download PDF: