Vehicle frame structure

A vehicle frame structure comprising:

• a bumper reinforcement that is arranged on an end of a vehicle body in a vehicle front-rear direction and extends in a vehicle width direction;
• a side structure that extends from an end of the bumper reinforcement in the vehicle width direction toward a center of the vehicle body in the vehicle front-rear direction, the side structure including a closed cross-sectional structure, and including a first side wall,
• the first side wall being provided on an outer side of the side structure in the vehicle width direction and including an upper edge line that extends in the vehicle front-rear direction, a lower edge line that extends in the vehicle front-rear direction, and a first protruding structure that protrudes outward in the vehicle width direction from the first side wall and extends in the vehicle front-rear direction;
• and
• a crush box that is arranged between the bumper reinforcement and the side structure, the crush box being deformable by a collision input equal to or greater than a predetermined value from the bumper reinforcement, the crush box including a second side wall that is positioned on an outer side of the crush box in the vehicle width direction,
• the second side wall including a second protruding structure that protrudes outward in the vehicle width direction from the second side wall and extends in the vehicle front-rear direction, the second protruding structure being provided on a middle structure, in a height direction, of the second side wall, wherein
• an edge line of the first protruding structure and an edge line of the second protruding structure are provided to be substantially continuous with each other in the vehicle front-rear direction;
• a distance between the first protruding structure and the upper edge line at an end of the first protruding structure on the crush box side is greater than a distance between the first protruding structure and the upper edge line, at a position a predetermined first distance away from the end of the first protruding structure on the crush box side in a direction away from the crush box;
• and
• a distance between the first protruding structure and the lower edge line at the end of the first protruding structure on the crush box side is greater than a distance between the first protruding structure and the lower edge line, at a position a predetermined second distance away from the end of the first protruding structure on the crush box side in the direction away from the crush box.