Patent ID: 8197107

Claim:
A housing structure of a door mirror for an automobile, the housing structure comprising: a cup shaped housing having first and second housing portions; the first housing portion having a first butting portion provided on an outer edge surface side of the first housing portion and a first mounting portion provided on an inner surface of the first housing portion, the first mounting portion having a boss that receives a screw and a boss projection portion formed at a free end of the boss; and the second housing portion having a second butting portion provided on an outer edge surface side of the second housing portion and contacting the first butting portion of the first housing portion, and the second housing portion having a second mounting portion provided opposite the first mounting portion of the first housing portion so as to be coupled to the first mounting portion by the screw, wherein the boss of the first mounting portion is provided with a screwing portion into which the screw is screwable in a substantially horizontal direction at a position spaced in a vertical direction from a horizontal plane passing through the first butting portion; and the first mounting portion and the second mounting portion are coupled by the screw through the boss projection portion, wherein the boss projection portion is located farther from the horizontal plane in the vertical direction than the screwing portion.