Framework structure of body-on-frame vehicle

A framework structure of a body-on-frame vehicle, the framework structure comprising:

• a first framework, a second framework, a battery, and a floor panel,
• the first framework including:
• a pair of left and right side rails extending in a vehicle body front-and-rear direction,
• a first cross-member extending in a vehicle body left-and-right direction and linking the side rails, and
• a second cross-member extending in the vehicle body left-and-right direction at a vehicle body rear side of the first cross-member and linking the side rails;
• the second framework being structured in a rectangular shape in plan view and including:
• a front cross portion and a rear cross portion that are formed in chamber shapes and extend in the vehicle body left-and-right direction, and
• a left side cross portion and a right side cross portion that are formed in chamber shapes and extend in the vehicle body front-and-rear direction;
• the floor panel disposed at a vehicle body upper side of the first cross-member and the second cross-member, the floor panel including an aperture portion and the second framework surrounds the aperture portion in plan view,
• the battery being disposed in a cavity surrounded by the first framework and the second framework;
• and
• the battery is accommodated in an accommodation portion that is inserted in the aperture portion, the accommodation portion including a flange that is attached to the second framework.