Title:
PLANETARY GEAR REDUCER
Document Type and Number:
WIPO Patent Application WO/2023/238401
Kind Code:
A1
Abstract:
Provided is a gear reducer that has high rigidity and can suppress the occurrence of vibration and noise. Provided is a planetary gear reducer (W1) provided with: an input shaft (10) having a first eccentric part (12) and a second eccentric part (14), which form a pair; a stationary sun gear (20) comprising an external gear provided coaxially with the input shaft (10); a first planetary gear (30) having an internal gear that meshes with the stationary sun gear (20) and provided on the first eccentric part (12); a driven sun gear (40) disposed coaxially with the axis of rotation of the input shaft (10) and comprising an external gear that outputs a speed reducing output; a second planetary gear (70) that has an internal gear that meshes with the driven sun gear (40), is configured to have a gear ratio different from that of the first planetary gear (30), and can receive eccentric input from the second eccentric part (14); and a coupling member (60) of a crankshaft disposed between the first planetary gear (30) and the second planetary gear (70). The coupling member (60) moves the planetary gears integrally with each other so that the same work as counterweights, and restricts the rotation of the planetary gears.
Inventors:
KAMEDA MICHIHIRO (JP)
KIMORI TAKATOSHI (JP)
KIMORI TAKATOSHI (JP)
Application Number:
PCT/JP2022/023516
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 | |||
| US9005065B2 | 2015-04-14 | |||
| US4896567A | 1990-01-30 |
Attorney, Agent or Firm:
YAGI Hidehito et al. (JP)
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