REAR WHEEL TOE ANGLE VARIABLE CONTROL DEVICE OF VEHICLE EQUIPPED WITH SELF-LOCKING MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide a toe angle variable control device which prevents a male screw from rotating owing to the load inputted from a wheel side even when an electric motor is in a non-energized state without enlarging an electric actuator. SOLUTION: The rear wheel toe angle variable control device 11 of a vehicle V is equipped with the electric actuator 10 varying the toe angle in right and left wheels 5 respectively. The electric actuator 10 has a DC motor 41 having a rotary shaft 42, and a feed screw mechanism 61 converting rotary movement of the rotary shaft 42 into linear motion. A recess 47 is formed in a tooth part 46 of a DC motor 41 so that the sum of friction force of the feed screw mechanism 61 and the resistance force caused by cogging torque of the DC motor 41 is made greater than the force to rotate the rotary shaft 42 caused by the lateral force acting on each rear wheel 5. COPYRIGHT: (C)2009,JPO&INPIT