Title:
ローラ式差動減速装置
Document Type and Number:
Japanese Patent JP7274079
Kind Code:
B2
Abstract:
To provide a technique for stabilizing a speed ratio, in a planetary roller-type differential reduction gear.SOLUTION: A roller-type differential reduction gear comprises: a first ring; a second ring connected to an output member; a third ring including first and second rolling bodies; a plurality of planetary rollers which has a first external peripheral face, a second external peripheral face and a third external peripheral face, and in which the first external peripheral face contacts with an internal peripheral face of the first ring, and the second external peripheral face contacts with an internal peripheral face of the second ring; a carrier for rotatably supporting the plurality of planetary rollers in a peripheral direction with a center axial line as a center; and an energization mechanism for energizing the second rolling body toward the first rolling body. The third external peripheral face and an external peripheral face of the first rolling body contact with each other at a face inclined toward one side in an axial direction to the inside of a radial direction, and the third external peripheral face and an external peripheral face of the second rolling body contact with each other at a face inclined toward the other side in the axial direction to the inside of the radial direction.SELECTED DRAWING: Figure 1
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Inventors:
Akihisa Okamura
Hitoshi Inoue
Hitoshi Inoue
Application Number:
JP2019128874A
Publication Date:
May 16, 2023
Filing Date:
July 11, 2019
Export Citation:
Assignee:
Nidek Drive Technology Co., Ltd.
International Classes:
F16H13/10; F16H13/08; H02K7/116
Domestic Patent References:
| JP2008106923A | ||||
| JP51137063A | ||||
| JP2015519523A | ||||
| JP4191549A |
Foreign References:
| WO2017179623A1 |
Attorney, Agent or Firm:
Takami Nishida
Kei Kajiwara
Kei Kajiwara