| 摘要 |
PURPOSE: An electrical actuator of a self-stretching-way having a sensor and an electronic break is provided to perform the reverse rotation of an electric motor in high speed by employing a cylinder-way motor driving structure. CONSTITUTION: A screw cylinder(3) is connected to a motor(1) provided with a fixing unit(17) through a connection groove(5) connected to an axis of the motor(1). A bearing(15) is mounted on both sides at an outside of the motor(1) to move a motor case and the screw cylinder(3). A ball bearing(14) is adhered to an end of the screw cylinder(3) to move an external cylinder(2) smoothly. A screw groove(4) is formed on a surface of the screw cylinder(3) from the end of the screw to a right screw direction and a left screw direction. A screw ball nut(6) having a ball of the right screw direction is mounted on an inner diameter of an external cylinder(2). A screw ball nut(9) having a ball of the left screw direction is mounted on the inner diameter of the external cylinder(2). Electronic breaks(8,7) are installed on the inner diameter of the external cylinder(2) to be a group with the respective screw ball nuts(6,9). |
