Patent ID: 6871989

Claim:
A reflector movable type headlamp for a vehicle comprising: a lamp body including a screw insertion hole; a front lens assembled into a front opening of the lamp body in order to constitute a lamp housing; a reflector accommodated in the lamp housing; and an aiming mechanism to tiltably support the reflector with respect to the lamp body, the aiming mechanism including: an aiming fulcrum forming a tilt fulcrum of the reflector, an aiming screw supported rotatably on the screw insertion hole, and a nut member attached to a bracket on a reflector side, screwed into the aiming screw and longitudinally advancing and retreating in cooperation with rotation of the aiming screw; a nut sliding guide extended in parallel with the aiming screw to carry and support the nut member slidably in a longitudinal direction being extended integrally with the lamp body, an attachment portion of the nut member constituting an aiming point and the bracket being provided with stress releasing means having a ball-and-socket joint structure for releasing a stress generated in the attachment portion with advance and retreat of the nut member, wherein the nut member has such a structure that a nut member body itself provided with a female screw portion constitutes a ball portion of the ball-and-socket joint structure and a slider to be supported by the nut sliding guide is formed integrally in a position offset toward a side of the nut member body; and a bearing attached to the bracket and provided with a longitudinal through hole for avoiding an interference of a ball receiving portion for supporting the ball portion with the aiming screw.