Patent ID: 6619809
Filing Date: 2003-09-16
Classification: B60Q

Abstract:
An orientation-adjusting device for a vehicle illuminator, said device comprising:a housing encasement having an elliptical hole and an axial hole; an active unit having an axial portion axially installed in the axial hole, and a gear portion located in the housing encasement; a driven unit having another gear portion engaged with the gear portion of the active unit, and a through hole including a threaded hole section relatively close to the active unit and a threadless hole section further away from the active unit; a cover installed on the housing encasement for covering the interior of the housing encasement and for preventing the driven unit from projecting beyond the housing encasement; a driven screw rod having at one end a threaded section for engaging the threaded hole section of the driven unit; and having another end with an elliptical cross section protruding out of the elliptical hole of the housing encasement to be connected with the vehicle illuminator, a root portion of the elliptical cross section having a circular protrusion, and an unthreaded cylindrical section being provided between the circular protrusion and the threaded section; an elastic unit installed between the circular protrusion of the driven screw rod and the driven unit, whereby, when the active unit is over-rotated in one direction, the driven screw rod is uncoupled from the driven unit and due to the threaded hole section of the driven unit being completely moved to the threadless cylindrical section of the driven screw rod and the threaded section of the driven screw rod being completely moved to the threadless hole section of the driven unit and the elastic unit provides an elastic force for re-screwing the threaded section of the driven screw rod to the threaded hole section of the driven unit as the active unit is rotated in a reverse direction; and an elastic sealing unit installed between the circular protrusion of the driven screw rod and the elliptical hole of the housing encasement for preventing gas from passing through the elliptical hole, whereby when the active unit is over-rotated in said another direction, the threaded section of the driven screw rod is uncoupled from the threaded hole section of the driven unit so as to prevent further movement of the driven screw rod, and the elastic sealing unit provides an elastic force for reengaging the threaded section of the driven screw rod with the threaded hole section of the driven unit as the active unit is rotated in a reverse direction.