| 摘要 |
PURPOSE: A car door operating device is provided to sense the opening and closing of a door automatically, and to open and close a door simply and easily using hydraulic pressure. CONSTITUTION: The car door operating device comprises the steps of fixing many cylindrical columns(110) on a door mounting area where a door(2) is attached, forming an arched guide space(111) in the cylindrical column(110), filling up the arched guide space(111) with oil, installing a circular slider(120) in the arched guide space(111) to move rightward and leftward along the arched slide space(111), installing a door(2) on the circular slider(120), installing a contact unit(130) elastically to the end of the circular slider(120) to be adhered to an internal wall of the circular column(110), and installing a hydraulic unit to the inside of the circular column(110) to let oil flow in and out. |
