Axial gap type coreless rotating machine

An axial gap type rotating machine comprising:

• a housing;
• a rotating shaft rotatably supported in the housing;
• a first end rotor and a second end rotor capable of rotating integrally with the rotating shaft, each end rotor being disposed to face the other with a distance therebetween in an axial direction of the rotating shaft, each end rotor comprising end rotating plates;
• at least one double-sided magnet rotor capable of rotating integrally with the rotating shaft, each double-sided magnet rotor being disposed in an air gap formed between the first and second end rotors, the double-sided magnet rotor comprising a rotating plate and permanent magnets disposed concentrically around the rotating shaft on both sides of the rotating plate so that magnetic pole surfaces are positioned perpendicular to the rotating shaft;
• and
• at least two stators fixed to the housing, each stator disposed in an air gap formed between the first end rotor, the double-sided magnet rotor, and the second end rotor, each stator comprising a fixing plate and coils disposed in a circle in each of the fixing plates so as to face circles of the permanent magnets,
• wherein each of the coils comprises a winding wire formed by a bundle of at least two coil conductors having rectangular cross sections by aligning at least one of long sides and short sides thereof, and the winding wire has an outer circumference covered with an insulating coating and is wound such that the long sides in each of the cross sections of the coil conductors are positioned perpendicular to the magnetic pole surfaces of the permanent magnets.