Multifunctional seat for narrow cabin of manned submersible

The multifunctional seat for the narrow cabin of the manned submersible comprises a horizontally-arranged supporting plate, a support is fixed to the upper surface of one end of the supporting plate, and the two ends of the support are each provided with a hollow cylinder structure; the device further comprises a frame, symmetrical insertion pipes are arranged at the bottom of the frame, the single insertion pipe goes in and out of the hollow cylinder structure and is fixed through a hand screw, the frame is perpendicular to the supporting plate, and a turnover frame is installed on one side of the frame through a rotating mechanism. The supporting plate is wrapped by a cushion, the frame is wrapped by a fixed chair back, the turnover frame is wrapped by a turnover chair back, and the cushion, the fixed chair back and the turnover chair back are soft package parts of the seat. By redesigning the chair back, the chair back is fixed on the supporting plate through a special structure, and the chair back can be