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Title:
CONTINUOUSLY VARIABLE TRANSMISSION AND BICYCLE
Document Type and Number:
WIPO Patent Application WO/2018/070372
Kind Code:
A1
Abstract:
This continuously variable transmission has a plurality of planetary rollers arranged around a main shaft. Both ends of the rotation shaft of each of the planetary rollers are held at different positions in a peripheral direction. In addition, said both ends of the rotation shaft are held so as to be displaceable in the radial direction with respect to the main shaft. This continuously variable transmission further has: a movable ring that engages the planetary rollers; and an elastic member that applies pressure to the movable ring in the axial direction. During use of the continuously variable transmission, the inclination angle of the rotation shaft of each of the planetary rollers within a cross-section including the main shaft changes according to the load applied to the planetary roller. Then, the contact position of an input rotor with respect to the planetary roller and the contact position of an output rotor with respect to the planetary roller respectively change. Thus, the transmission gear ratio between the input rotor and the output rotor can be switched. In other words, the transmission gear ratio can be automatically switched according to the load.

Inventors:
OKAMURA Kikuo (1 Terada Kohtari, Nagaokakyo-cit, Kyoto 33, 〒6170833, JP)
INOUE Hitoshi (1 Terada Kohtari, Nagaokakyo-cit, Kyoto 33, 〒6170833, JP)
DEGUCHI Norio (1 Terada Kohtari, Nagaokakyo-cit, Kyoto 33, 〒6170833, JP)
HAIZUMI Kyohei (1 Terada Kohtari, Nagaokakyo-cit, Kyoto 33, 〒6170833, JP)
Application Number:
JP2017/036639
Publication Date:
April 19, 2018
Filing Date:
October 10, 2017
Export Citation:
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Assignee:
NIDEC-SHIMPO CORPORATION (1 Terada, Kohtari Nagaokakyo-cit, Kyoto 33, 〒6170833, JP)
International Classes:
F16H15/52; B62M9/08
Domestic Patent References:
WO2010092661A12010-08-19
Foreign References:
JP2016070393A2016-05-09
JP2006519349A2006-08-24
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (Takaoka IP Law Office, Ikebukuro Tosei Building 5th Floor, 5-4-7, Nishi-Ikebukuro, Toshima-k, Tokyo 21, 〒1710021, JP)
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