Patent ID: 7288043
Filing Date: 2007-10-30
Classification: F16H

Abstract:
1. A belt type continuously variable transmission, comprising: an input side pulley which includes an input side pulley shaft to which a driving force from a drive source is transmitted, an input side movable sheave that slides on the input side pulley shaft in an axial direction of the input side pulley shaft, and an input side fixed sheave that faces the input side movable sheave in the axial direction such that an input side groove is formed between the input side fixed sheave and the input side movable sheave; an output side pulley which includes an output side pulley shaft that is provided in parallel with the input side pulley shaft, an output side movable sheave that slides on the output side pulley shaft in an axial direction of the output side pulley shaft, and an output side fixed sheave that faces the output side movable sheave in the axial direction such that an output side groove is formed between the output side fixed sheave and the output side movable sheave; a belt which is looped over the input side groove and the output side groove; a planetary gear set which transmits the driving force transmitted from the output side pulley to a differential gear unit that is provided so as to be coaxial with the output side pulley shaft; and a damper device which is provided between the output side pulley and the planetary gear set, wherein the planetary gear set includes an input shaft to which the driving force transmitted from the output side pulley is transmitted, and which is slidable on an axis of the output side pulley shaft in the axial direction of the output side pulley shaft, and the damper device is provided between the output side pulley shaft and the input shaft, and wherein the damper device is a damper oil chamber whose volume changes as the input shaft slides on the axis of the output side pulley shaft in the axial direction of the output side pulley shaft.