Patent ID: 9004594
Filing Date: 2015-04-14
Classification: B60N,Y10T

Abstract:
1. An actuator system for controlling a lumbar support, comprising: a wire fixed and coupled with a lumbar support at one end; a driving motor rotating in the clockwise or counterclockwise direction according to an external input signal; a worm coupled with the driving shaft of a driving motor so as to rotate; a deceleration part having a worm gear which is engaged with the worm in a perpendicular direction and a screw which rotates in association with the worm gear and decelerating the power of a driving motor; a slider formed with a protrusion portion at an upper portion, connected to the other end of the wire, and having a spiral groove that is formed on an inner peripheral surface so as to be spirally coupled with the outer peripheral surface of the screw such that the slider carries out rectilinear reciprocating motion according to the rotation direction of the driving motor; a housing configured to receive the slider within and having a wire-passing hole that is formed in an outer peripheral surface such that the wire penetratingly passes through the wire-passing hole, a connection hole that is formed at one side end portion such that the worm is inserted and mounted thereto, a mounting hole that is formed inside so as to secure the deceleration part and communicate with the connection hole, and a guide hole that is formed to be concave on the upper end of the inner peripheral surface of the mounting hole in the lengthwise direction of the mounting hole such that the protrusion portion of the slider is inserted thereto: and a motor control part, which has a hall sensor for sensing the revolutions per minute of the driving shaft of the driving motor such that the motor control part stops the operation of the driving motor as the revolutions per minute of the driving shaft of the driving motor reaches preset revolutions per minute, wherein the operation of the driving motor is stopped by the motor control part if it is determined by the hall sensor that the driving shaft of the driving motor rotates by the preset revolutions per minute.