US Patent 8100434 Frame structure for vehicle and vehicle

A frame structure for a vehicle includes a vehicle body frame, a pair of occupant seats, and a center pipe. The vehicle body frame has a front-rear direction. The pair of occupant seats includes a driver's seat and a passenger seat and are arranged side by side in a vehicle width direction substantially orthogonal to the front-rear direction. The center pipe extends in the front-rear direction and is arranged substantially on a center line of a vehicle body so as to pass through positions between the driver's seat and the passenger seat in the vehicle body frame.