Title:
無段変速機および自転車
Document Type and Number:
Japanese Patent JP7207320
Kind Code:
B2
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.
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Inventors:
Okamura Kikuo
Hitoshi Inoue
Hitoshi Inoue
Application Number:
JP2019551227A
Publication Date:
January 18, 2023
Filing Date:
October 25, 2018
Export Citation:
Assignee:
Nidec-Shimpo Co., Ltd.
International Classes:
F16H15/28; B62M11/12; B62M11/16; F16H15/18
Domestic Patent References:
| JP2016516633A | ||||
| JP2015227692A | ||||
| JP3728132Y1 | ||||
| JP201431800A | ||||
| JP2012193794A | ||||
| JP472805B1 |
Attorney, Agent or Firm:
Kei Kajiwara