Patent ID: 8884491

Claim:
A multi-gap electric rotating machine, comprising: a rotor including an annular rotor core; a stator core having a radially outer portion, a radially inner portion and a connecting portion, the radially outer portion having an annular shape and being located radially outside of the rotor core with a radially outer magnetic gap formed between the radially outer portion and the rotor core, the radially outer portion having a plurality of slots that are formed in a radially inner surface of the radially outer portion and spaced in a circumferential direction of the radially outer portion, the radially inner portion having an annular shape and being located radially inside of the rotor core with a radially inner magnetic gap formed between the radially inner portion and the rotor core, the radially inner portion having a plurality of slots that are formed in a radially outer surface of the radially inner portion and spaced in a circumferential direction of the radially inner portion, the connecting portion radially extending to connect the radially outer and inner portions, the connecting portion being located on one axial side of the rotor core with an axial magnetic gap formed between the connecting portion and the rotor core, the connecting portion having a plurality of slots each of which is formed in an axial end face of the connecting portion facing the rotor core so as to communicate with a corresponding pair of the slots of the radially outer and radially inner portions; and a stator coil formed of a plurality of electric wires mounted on the stator core, each of the electric wires having a plurality of radially-outer in-slot portions, a plurality of radially-inner in-slot portions and a plurality of radially-intermediate in-slot portions, each of the radially-outer in-slot portions being received in a corresponding one of the slots of the radially outer portion of the stator core, each of the radially-inner in-slot portions being received in a corresponding one of the slots of the radially inner portion of the stator core, each of the radially-intermediate in-slot portions being received in a corresponding one of the slots of the connecting portion of the stator core.