Vehicle body assembly structure

A vehicle body assembly structure comprising:

• a bolt non-rotatably fixed in a vehicle body or a part;
• a fastening hole formed in the part so that the bolt is inserted thereinto;
• a bushing inserted between the fastening hole and the bolt;
• a moving portion configured to move the bushing in one direction of forward and backward with respect to the fastening hole;
• and
• a nut fastened to the bolt,
• wherein an inner side surface of the bushing is spaced apart from the bolt, and
• wherein the bushing is contacted on and fixed to the vehicle body, when the bushing moves in the one direction due to fastening between the bolt and the nut,
• wherein the moving portion includes a female screw portion formed in the fastening hole and threads formed at an outer side surface of the bushing so as to be fastened to the female screw portion, and a slope of the threads of the bushing is greater than a slope of threads of the bolt,
• wherein a catching plate is formed on one surface of the part so as to protrude in a longitudinal direction of the fastening hole,
• a catching groove is formed between the one surface of the part and the catching plate so as to be recessed in an inner diameter direction of the catching plate,
• a loosening-prevention catching bracket is formed at one surface of the bushing so as to protrude in an outer diameter direction of the bushing, and
• a catching protrusion inserted into the catching groove is formed at the catching bracket.