ELECTRIC ACTUATOR FOR CONTROLLING A TOE ANGLE OF A REAR WHEEL FOR A VEHICLE, CONNECTED WITH AN AUXILIARY LINK TO CONTROL AN UNSTABLE POSTURE

摘要

PURPOSE: An electric actuator for controlling the toe angle of a rear wheel for a vehicle is provided to prevent a rectilinear motion of a rod from hindering and to restrict grease injected into a screw surface of a lead screw and the rod from separating by forming a through-hole for preventing the isolation of an inner space of the rod from the outside. CONSTITUTION: An electric actuator mounted at one end of a rear cross member to secure stability of a traveling vehicle by controlling toe angle of a rear wheel is composed of a DC(Direct Current) motor(40) combined to a rear end of a housing(45); a lead screw(42) rotatively joined in a hollow hole(58) of the housing by the DC motor; a ball nut(61) screw-combined to the lead screw; a rod(41) disposed at the ball nut in the front end direction of the housing to rectilinearly move; and a through-hole(10) formed at one end of the rod to communicate a space formed in the rod with the outside.