Patent ID: 6619147
Filing Date: 2003-09-16
Classification: F16H,H02K,Y10T

Abstract:
A linear actuator comprising in line a motion conversion mechanism, a drive mechanism and a support mechanism between the motion conversion mechanism and the drive mechanism; the motion conversion mechanism comprises a driven screw having a screw axis, a nut connected to the driven screw and an output shaft connected to the nut for linear movement; the drive mechanism comprises motor means having an output shaft directly connected to the driven screw at a connection point; and the support mechanism comprises (1) a support block having a pair of bearings secured therein for supporting the driven screw and the output shaft at the connection point and (2) a swing support mechanism connected to the support block wherein the swing support mechanism has a swing axis in a plane intermediate the pair of bearings and including the screw axis whereby force flow line inside the linear actuator is through the output shaft, nut, screw, support block and swing support mechanism while the motor means is substantially free of the force flow.