| 摘要 |
PURPOSE:To make the rotor of a flat motor lighter and the preparation of the rotor ready by preparing a plurality of elliptical coils with a step in the thickness direction, and arranging them around the perimeter of a bushing, with their steps placed on each other, before thermally pressing them in order to form into a unitary structure. CONSTITUTION:A coil 11, which has steps 11c and 11d on the sides, is prepared by winding a self-weldable conductor to the half of a fixed thickness of the coil 11, before finishing the rest, with it shifted by an angle of theta with respect to the rotor shaft. Three pieces of such coil 11, for example, are arranged around the perimeter of a bushing 13 having a commutator 14, with their steps 11c and 11d placed on each other. Then the coils 11 are thermally pressed in order to form into a unitary structure. Thus, adhesives are eliminated when the coils 11 are made unitary, so that the rotor can be lighter, and the preparation can be ready. |
