To provide a belt-form continuously variable transmission capable of suppressing an increase in the amount of looseness while improving the lubricity of a fitting part between a pulley shaft and a movable sheave.
The belt-form continuously variable transmission 1 comprises pulleys having pulley shafts 21, 31 and movable sheaves 23, 33 fitted to the pulley shafts 21, 31 at the fitting parts F1 to rotate integrally with the pulley shafts 21, 31 around a rotation axis M and supported to the pulley shafts 21, 31 slidably in an axial direction. A plurality of pole parts H1 protruded in the radial outward are formed at the fitting parts F1 of the pulley shafts 21, 31, and a plurality of projecting parts S1 contacting the parts other than the pole parts H1 on the outer peripheral surfaces of the pulley shafts 21, 31 are formed at the fitting parts F1 of the movable sheaves 23, 33, on the inner peripheral surfaces of the movable sheaves 23, 33.
HATTORI TAKEHITO
NOZAWA TAKAFUMI
Next Patent: JP2009191942