| 摘要 |
PURPOSE: A device for preventing a door sag in a vehicle is provided to prevent the door sag through a repeated vertical vibration by supporting the door when the door is closed and releasing the support when the door is opened. CONSTITUTION: A door supporting plate(10) supports the lower part of a door and contains a fixing groove(12) in the center of the inner surface and a pin insertion groove(14) to be inserted a pin(40). A hydraulic pump(20) is inserted in the fixing groove and installed in an operating rod(22) to move the door supporting plate upward and downward by moving vertically. A cover(30) shields the upper part of the hydraulic pump, loads the door supporting plate on the surface and includes a through hole(34) to be penetrated by the operating rod. In closing the door, an ECU(Electronic Control Unit) detects the closed status by a signal from a door switch and lifts the operating rod to support the door through the door supporting plate.
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