The invention provides a driving device capable of being carried in an OA machine etc. and effectively received in a conveying box. The driving device comprises a rotation power generation device (6) generating rotation power, a rotation power transmission mechanism (13) transmitting rotation power of the rotation power generation device (6), a rotation power output mechanism (15) outputting rotation power transmitted by the rotation power transmission mechanism (13), and a frame body (2) receiving the rotation power generation device (6), the rotation power transmission mechanism (13), and the rotation power output mechanism (15), an output shaft (8) performing perforation of one party of the frame body (2), the rotation power output mechanism (15) is supported by the shaft to protrude from the other party of the frame body (2) to the inner side of the frame body (2) and then be formed in a cylindrical shaft portion (33), furthermore, in the cylindrical shaft portion (33), a receiving concave portion (35) receiving an output shaft (8) when a plurality of frames (2) are in overlapping along the shaft direction of the output shaft (8).