Patent ID: 6637919
Filing Date: 2003-10-28
Classification: B60Q,F21S

Abstract:
A reflector movable type headlamp for an automobile comprising:a lamp body; a front face lens integrated with a front face opening portion of the lamp body to form a lamp chamber; a light source; a reflector contained in the lamp chamber and positioned to reflect light originating from the light source; and an aiming mechanism interposed between the lamp body and the reflector and operable to inclinably support and move the reflector relative to the lamp body; wherein the aiming mechanism includes: a screw insertion hole provided to the lamp body; an aiming fulcrum constituting an inclining fulcrum of the reflector; an aiming screw rotatably supported by the screw insertion hole and operable to move the reflector by pivotal movement of the aiming screw; a bracket extendedly formed at the reflector; a nut member mounted to the bracket and screwed to the aiming screw and operable to be extracted and retracted in a front and rear direction in cooperation with the pivotal movement of the aiming screw; and a nut sliding guide integrally and extendedly formed with the lamp body for carrying and slidably supporting the nut member in the front and rear direction; wherein a mounting portion of the nut member and the bracket constituting an aiming point is provided with stress relieving means, the stress relieving means including a ball and socket joint structure for relieving stress produced at the mounting portion in accordance with extracting and retracting the nut member; wherein the nut sliding guide is provided at a position offset to a side position of a position of arranging the aiming screw on a side opposed to the aiming fulcrum; wherein the nut member constitutes a ball portion of the ball and socket structure by a nut member main body screwed to the aiming screw and is integrally formed with a slider portion supported by the nut sliding guide at a side position of the nut member main body; and wherein a side of the bracket is provided with an engaging hole opened to a side of the nut sliding guide, supporting the nut member main body and constituting a ball receive portion of the ball and socket joint.