Patent ID: 7244202
Filing Date: 2007-07-17
Classification: F16H

Abstract:
1. 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.