The present invention is a connection structure that is detachably connected to a wheelchair to provide power to a wheelchair and a wheelchair, a fixed structure fixed to a wheelchair frame, and a fixed joint consisting of a body portion extending from one side to a fixed portion, and fixed Slidingly coupled to the outer diameter of the body portion of the joint, the first guide hole cut in the longitudinal direction at the end, the second guide hole cut in the rotational direction at the end of the first guide hole, and the rotating socket, sliding on the outer diameter of the rotating socket Combined, the rotary clamp rotates the rotating socket forward and backward, and is fastened through the rotating clamp and the rotating socket in turn, and the end is integrally provided with the screw and the power assisting device frame that comes into contact with the body of the fixed joint, and the inner diameter of the rotating socket. The insertion portion is inserted into, the compression spring is mounted on the outer diameter of the insertion portion, and protruding outside the insertion portion is guided along the first guide hole and the second guide hole and includes an insertion rod formed with a fastening pin to be fastened to a rotating socket It relates to a connection structure between a wheelchair and an electric assist device. According to the present invention, the rotational clamp can be easily and quickly and securely fastened to the wheelchair simply by rotating the rotational clamp while the insertion rod on the side of the electric assistive device is inserted into the rotation socket on the side of the wheelchair. The insertion rod is automatically disengaged from the rotating socket by the elastic restoring force of the compression spring only by rotating, so that the wheelchair and the power assist device can be disconnected easily and quickly with little force.본 발명은 휠체어에 착탈가능하게 연결되어 휠체어에 동력을 제공하는 전동보조장치와 휠체어의 연결구조로서, 휠체어 프레임에 고정되는 고정부와, 고정부에서 일측으
