Patent ID: 7803076

Claim:
A belt type continuously variable transmission, comprising: two pulley shafts arranged in parallel a predetermined distance apart from each other; a movable sheave on each pulley shaft, the movable sheaves being able to slide in an axial direction on the pulley shafts; a fixed sheave arranged on each pulley shaft so as to face the moveable sheave on each pulley shaft, the fixed sheave and the movable sheave that face each other on each pulley shaft together forming a groove therebetween; a belt wound around the grooves between the movable sheaves and the fixed sheaves that face one another; a motor that rotates in normal and reverse directions to drive one of the movable sheaves in the axial direction of a pulley shaft of the one of the moveable sheaves; a moving direction converting mechanism that converts force in the direction of rotation, which is driving force of the motor, into force in the axial direction; and a hydraulic pressure chamber, which pushes the one movable sheave toward the fixed sheave using hydraulic pressure, is provided between the motor and an inner radial surface of the one movable sheave in the axial direction, wherein the motor is provided in a hollow portion of the one of the moveable sheaves, that is located opposite the groove, the hollow portion including an inner circumferential wall surface, wherein the motor includes an outer rotor that is integrated with the one of the moveable sheaves and the outer rotor includes an outer peripheral portion disposed radially about the outer rotor, and wherein the moving direction converting mechanism is disposed between the outer peripheral portion of the outer rotor and the inner circumferential wall surface of the hollow portion of the moveable sheave.