US Patent 11628886 Vehicle body side structure

A vehicle body side structure includes a side panel assembly and a floor assembly. The side panel assembly has a side sill outer panel part fixed to a side sill reinforcement member and a fastening nut provided on a rear end portion of the side sill reinforcement member. The floor assembly has a wheel arch reinforcement member fixed to an inner panel front portion and a collar interposed between the wheel arch reinforcement member and the inner panel front portion. The side panel assembly is assembled to the floor assembly by fastening a fastening bolt to the fastening nut.