US Patent 8046880 Clip

A long hole of a seat plate member is fittingly inserted to a fitting head portion provided on an upper surface of a flat plate portion of a clip in an upright posture, so as to attach the clip to the cutaway groove portion with the seat plate member in contact with a flat plate portion, and the fitting head portion is fitted to a long hole formed in an attachment receiving member. As the fitting head portion is fitted to the long hole, the boss portion moves within the cutaway groove portion to bring the seat plate member into contact with the attachment receiving member and to elastically lock a pair of elastic locking pieces with the periphery of each longer side portion of the long hole.