Patent ID: 7618012

Claim:
A bracket fixing structure comprising: an attachment member formed with an annular attachment member recessed portion, an attachment member protruding portion surrounded by the attachment member recessed portion, and an attachment member screw hole in the attachment member protruding portion; a bracket formed with an annular bracket recessed portion, which corresponds to the attachment member recessed portion, a bracket recess rim, which surrounds the bracket recessed portion on an upper surface of the bracket, a bracket protruding portion, which is surrounded by the bracket recessed portion, and a bracket screw hole in the bracket protruding portion; a screw; and a washer formed with a washer screw hole and a fixing portion extending at least from the bracket protruding portion to an outer periphery of the bracket recessed portion, wherein the bracket is fixed by inserting the bracket recessed portion into the attachment member recessed portion, by putting the washer on a face of the bracket that is opposite to a contact face of the bracket that contacts the attachment member, and by inserting the screw into the washer screw hole, the bracket screw hole and the attachment member screw hole from a side of the washer that is opposite to a contact face of the washer, which contacts the bracket, the bracket protruding portion is formed such that a top face of the bracket protruding portion is recessed with respect to a plane defined by the bracket recess rim thereby forming a clearance between the top face of the bracket protruding portion and the washer, the attachment member recessed portion and the bracket recessed portion are each continuously recessed, and only an outer peripheral area of the washer, which is radially spaced apart from the washer screw hole, contacts the bracket when the bracket is fixed to the attachment member by the screw.