BALL SCREW DRIVE WITH INTERNAL DEFLECTOR

원문 (중국어)

A ball screw drive having a threaded spindle, a spindle nut and balls which circulate in a helical ball race located therebetween. Two ball deflectors engage in the ball race and a transfer channel extends therebetween that together with part of the ball race form a closed recirculation track. The ball return guide is an internal deflector. The threaded spindle includes a radially external hollow cylinder with a central symmetrical internal cavity and a cylindrical core filling this cavity. The cylindrical core is formed of first and second core halves. The transfer channel is arranged in the common separating surface of the core halves, which are designed as oblique halves, the common separating surface thereof forming a plane which intersects the central axis of the core only at one point. The ball screw drive can be used in a brake booster system, a wheel brake or generally as an actuator.