Abstract: A sofa-bed assembly in a recreational vehicle or van has a seat and a back. There is a storage space under the seat. The back can be moved in a simple roll-over action from an upright position at the rear of the seat to a horizontal, bed-forming position at the front edge of the seat. Two mounting brackets are fixed to the vehicle, one at each side of the seat. The back is connected to mounting brackets by two links on each side of the brackets and back to facilitate this action. The mounting brackets also serve to control the seat which is connected to the brackets by a pair of seat-connecting pivot links.