Vehicle structure and manufacturing method for vehicle structural component

A manufacturing method for a vehicle structural component in which a foamed member is fixed to an inner face of an outer side panel of a vehicle through a reinforcement member, the manufacturing method comprising:

• a first process of joining the reinforcement member to the inner face of the outer side panel, and disposing a precursor of the foamed member on the opposite side of the reinforcement member to the outer side panel;
• a second process, following the first process, of heating the precursor so as to cause the precursor to foam, and forming the foamed member in a state of contact with the reinforcement member;
• and
• a third process, following the second process, of cooling and solidifying the foamed member;
• wherein
• the reinforcement member is configured from a material having a shrinkage ratio in the third process smaller than the shrinkage ratio of the foamed member in the third process, and
• the vehicle structural component includes a vehicle framework member comprising a framework inner panel and a framework outer panel, the framework inner panel joined to the framework outer panel at edge regions thereof so as to define a closed cavity therebetween, and a face of the foamed member, opposite a face of the foamed member that contacts the reinforcement member, contacting a vehicle outer side surface of the framework outer panel.