Patent ID: 8506098

Claim:
A mounting portion structure of a door mirror in which a mirror base of a door mirror is mounted via a gasket to a mounting surface on an outdoor side of a mirror mounting portion placed on a vehicle door, wherein the gasket includes two elastically deformable temporary fixing pieces formed to protrude to face each other with a space therebetween on a surface facing the mirror mounting portion, and rotatable pawls formed to direct outward at tips of the two temporary fixing pieces, the mirror mounting portion includes an opening through which the two elastically deformable temporary fixing pieces are inserted and that locks and temporarily fixes the pawls of the temporary fixing pieces to facing edges, the gasket is previously secured to the mirror base, the mirror base is temporarily fixed to the mirror mounting portion, and the mirror base and the mirror mounting portion are fixed by a screw to mount the mirror base to the mirror mounting portion, wherein the mirror base has a structure in which a boss is provided to stand on a surface facing the mirror mounting portion, the gasket includes a boss insertion hole through which the boss is inserted, the mirror mounting portion includes a boss insertion hole through which the boss protruding through the boss insertion hole in the gasket is inserted.