V-belt continuously variable transmission

摘要

A V-belt continuously variable transmission (10) is provided with an actuator (30) that uses ordinary screws threads in place of a ball screw. As a motor (32) is driven to rotate a nut member (34), an output rod (46) is moved axially to move a movable sheave member (21) toward or away from a fixed sheave member (15). A female screw (44) is formed on the nut member (34), and a male thread (45) is formed on the output rod (46).