Patent ID: 8786155

Claim:
An axial gap rotating electrical machine comprising: a housing frame body having a first space in the cylindrical central part thereof, and a plurality of second spaces located in the circumferential direction which have the same distances from the center; a shaft rotatably provided in the first space in the housing frame body; a core placed in each of the plurality of the second spaces in the housing frame body and a coil arranged around the core; a rotor yoke fixed on the shaft, extended in the direction of the circumference thereof, and having a plurality of magnets arranged in circumferential positions confront the cores; and a case having a hole for the shaft and housing the housing frame body and the rotor yoke, wherein each of the plurality of the second spaces is open on one side and closed on the other side, and the axial thickness of the closed portion is smaller than the air gap between the cores housed in the housing frame body on the open side and the magnets of the rotor yoke arranged opposite to the cores.