Step motor positioning structure for belt-type continuously variable transmission

A step motor positioning structure for a belt continuously variable transmission including a primary pulley, a secondary pulley, a belt wound around the primary pulley and the secondary pulley, a speed-change control valve for controlling a primary pressure to be supplied to the primary pulley, a servo link, and a step motor for driving, by way of the servo link, the speed-change control valve in response to a speed-change command signal, the servo link being connected to the primary pulley to follow a variation in a width of a groove of the primary pulley and thereby perform feedback control of the width of the groove of the primary pulley, the step motor positioning structure comprising:

• a motor bracket formed integral with the step motor and having an elongated hole and a circular hole;
• a stationary bracket support supporting thereon the motor bracket;
• a first positioning member protruding outward from the bracket support and inserted in the elongated hole;
• and
• a second positioning member protruding outward from the bracket support and inserted in the circular hole,
• wherein the belt continuously variable transmission includes a valve body disposed under the primary pulley and constituting part of the speed-change control valve, and
• wherein the bracket support is integrally formed with the valve body to protrude upward therefrom.