Title:
トロイダル型無段変速機
Document Type and Number:
Japanese Patent JP6729074
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a toroidal-type continuously variable transmission which can suppress abrupt heat generation caused by a slide in a thrust bearing of a power roller in a deceleration-side gear change state that a rotation number of the power roller becomes large.SOLUTION: In a thrust force impartment structure 100, a cavity diameter Dof an input-side disc 2 is set larger than a reference cavity diameter D, a curvature radius Rof a traction face 2A of the input-side disc 2 with which the power roller contacts is set smaller than a reference curvature radius R, a cavity diameter Dof an output-side disc 3 is set smaller than a reference cavity diameter D, and a curvature radius Rof a traction face 3A of an output-side disc 3 with which the power roller contacts is set smaller than the reference curvature radius R. By this constitution, in a deceleration-side gear change state that a rotation number of the power roller becomes large, abrupt heat generation caused by a slide in a thrust bearing of the power roller can be suppressed.SELECTED DRAWING: Figure 1
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Inventors:
Ken Nishimura
Application Number:
JP2016129545A
Publication Date:
July 22, 2020
Filing Date:
June 30, 2016
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
F16H15/38
Domestic Patent References:
| JP7310796A | ||||
| JP11210869A | ||||
| JP8145138A | ||||
| JP2005291453A |
Attorney, Agent or Firm:
Kuribayashi Mitsuo
Etsuichi Matsumoto
Etsuichi Matsumoto