Title:
TRACTION SPEED REDUCER AND ELECTRIC MOTOR–EQUIPPED SPEED REDUCER
Document Type and Number:
WIPO Patent Application WO/2017/199941
Kind Code:
A1
Abstract:
This traction speed reducer is provided with: a sun roller that rotates about an axis of rotation; a plurality of planetary rollers that are disposed around the sun roller; a pair of annular internal rings that are in contact with the plurality of planetary rollers; and a carrier that holds the planetary rollers and rotates about the axis of rotation. The plurality of planetary rollers are each in contact with the sun roller and both of the internal rings, and by receiving motive power from the sun roller, orbit around the axis of rotation while rotating independently. The carrier has a contact surface facing the outer circumferential surface of the planetary rollers, and the contact surface and the outer circumferential surface of the planetary rollers are in contact in the circumferential direction about the axis of rotation. As a result, a carrier pin for rotatably supporting the planetary rollers is unnecessary. Thus, it is possible to reduce the number of components and decrease the size of the traction speed reducer.
Inventors:
IMAMURA TADASHI (JP)
Application Number:
PCT/JP2017/018327
Publication Date:
November 23, 2017
Filing Date:
May 16, 2017
Export Citation:
Assignee:
NIDEC SHIMPO CORP (JP)
International Classes:
F16H13/14; F16H13/08; H02K7/10
Foreign References:
| JP2002171721A | 2002-06-14 | |||
| JP2000130529A | 2000-05-12 | |||
| JP2016034223A | 2016-03-10 | |||
| JPS54140153U | 1979-09-28 | |||
| JPS6237561A | 1987-02-18 | |||
| JP2000065165A | 2000-03-03 | |||
| JPS5941631Y2 | 1984-12-01 |
Attorney, Agent or Firm:
ISHIZUKA, Toshihiro (JP)
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