Title:
SPEED REDUCER
Document Type and Number:
WIPO Patent Application WO/2017/179623
Kind Code:
A1
Abstract:
This speed reducer (1A) has a first speed reduction mechanism (20A) and a second speed reduction mechanism (30A). The first speed reduction mechanism (20A) has sun rollers (21A, 22A), a support part (62A), and planetary rolling bodies (23A). The second speed reduction mechanism (30A) has a fixed gear (32A) and a rotating gear (31A). The fixed gear (32A) and the rotating gear (31A) partially engage due to pressure received from the planetary rolling bodies (23A). Thus, the number of members in a power transmission unit between the first speed reduction mechanism (20A) and the second speed reduction mechanism (30A) can be reduced. Accordingly, a second stage of speed reduction occurs, and a compact speed reducer (1A) is achieved. Furthermore, the planetary rolling bodies (23A) make contact with the sun rollers (21A, 22A) and the support part (62A), thereby stabilizing the position of the planetary rolling bodies (23A). Accordingly, excessive contact between gear members does not easily occur.
Inventors:
OKAMURA KIKUO (JP)
INOUE HITOSHI (JP)
INOUE HITOSHI (JP)
Application Number:
PCT/JP2017/014994
Publication Date:
October 19, 2017
Filing Date:
April 12, 2017
Export Citation:
Assignee:
NIDEC SHIMPO CORP (JP)
International Classes:
F16H1/32; F16H13/08; F16H13/10
Foreign References:
| JPS444063B1 | 1966-02-19 | |||
| JPS63115944A | 1988-05-20 |
Attorney, Agent or Firm:
NISHIDA Takami (JP)
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