To miniaturize a camera by assembling a film feeding mechanism while saving space.

A transmission gear for winding 61 to which the rotation of a motor 46 is transmitted at the time of winding film, a transmission gear for feeding 62 to which the rotation of the motor 46 is transmitted at the time of feeding the film, and a transmission gear for rewinding 63 to which the rotation of the motor 46 is transmitted at the time of rewinding the film are coaxially assembled. A clutch mechanism (a clutch piece, a recessed part in which the clutch piece is housed and a pawl member formed on the upper surface of the inner wall of the recessed part) making the rotation of a spool driving shaft 32 free at the time of winding the film is assembled between the gears 62 and 63. In order to transmit driving force between a film chamber and a cartridge chamber, a timing belt 70 bent by two rollers 92 and 93 is used to form a housing space for a battery 22.