Structure for fixing bolt to mounting bracket, method for fixing bolt to mounting bracket, and pole holder

摘要

An object of the present invention is to firmly fix a bolt to a mounting bracket without causing the bolt to rotate with respect to the mounting bracket even when a nut screwed to a screw portion of the bolt is tightened to, for example, a holding bracket. A fixing structure according to the present invention includes a mounting bracket, a bolt, and a bolt fixing mechanism. A through hole 12d is formed in the mounting bracket. The bolt includes a screw portion 11a inserted into the through hole, a polygonal head 11b formed to have a larger diameter than the through hole, and a neck portion 11c connecting the screw portion and the head and located at a circumferential portion of the through hole. And The bolt fixing mechanism is configured to fix the bolt to the mounting bracket in a state where the screw portion is inserted into the through hole. That is, the bolt fixing mechanism includes a concave portion 12f formed around the through hole of the mounting member and formed in a polygonal shape corresponding to the polygonal shape of the head portion and capable of accommodating a part of the polygonal head portion. The inner peripheral portion of the hole has a press contact portion 12g which is plastically deformed by press forming and pressed against a part of the neck portion and the screw portion of the bolt. [Selection diagram] Fig. 1