Title:
CONTINUOUSLY VARIABLE TRANSMISSION AND BICYCLE
Document Type and Number:
WIPO Patent Application WO/2019/087915
Kind Code:
A1
Abstract:
A continuously variable transmission having a plurality of planetary rollers arranged around a main shaft. Both ends of a rotary shaft of each of the planetary rollers are held so as to be capable of being displaced in the radial direction with respect to the main shaft. Each planetary roller has a first inclined surface in contact with an input rotating body and as second inclined surface in contact with an output rotating body. The inclination angle of the planetary rollers changes in accordance with the position of a movable ring in the axial direction. Thus, both the contact position of the first inclined surface with respect to the input rotating body and the contact position of the second inclined surface with respect to the output rotating body change. Therefore, the transmission gear ratio between the input rotating body and the output rotating body can be switched. Furthermore, the first inclined surface of the planetary rollers is a spherical surface. Therefore, the direction and magnitude of pressure generated at the contact point of the first inclined surface and the input rotating body does not easily change, regardless of the inclination angle of the planetary rollers.
Inventors:
OKAMURA KIKUO (JP)
INOUE HITOSHI (JP)
INOUE HITOSHI (JP)
Application Number:
PCT/JP2018/039625
Publication Date:
May 09, 2019
Filing Date:
October 25, 2018
Export Citation:
Assignee:
NIDEC SHIMPO CORP (JP)
International Classes:
F16H15/28; B62M11/16; F16H15/18
Foreign References:
| JP2016516633A | 2016-06-09 | |||
| JP2015227692A | 2015-12-17 | |||
| JPS3728132Y2 | ||||
| JP2014031800A | 2014-02-20 | |||
| JP2012193794A | 2012-10-11 | |||
| JPS472805U | 1972-09-01 |
Attorney, Agent or Firm:
KOHO IP LAW (JP)
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