| 摘要 |
PURPOSE:To obtain a coreless armature which can be effectively bonded to a coil strand of jumper wires without causing layer shortcircuit of the jumper wires by providing annular slots at both ends of a boundary of inner and outer layers and inserting insulators into the slots. CONSTITUTION:Annular slots 30 are formed over both layers 15, 17 in the boundary of an inner layer 15 and an outer layer 17, and projections 31a of a ring-shaped insulator 31 are respectively inserted into the slots 30. The insulator 31 is made of a body portion 31b which makes contact with the end faces of the inner and outer layers 15, 17 and the projections 31a, and has many holes 32, to which jumper wires 26 are inserted, at the body portion 31b. The holes 32 are opened at the contacting surfaces of the inner and outer layers 15, 17. The insulator 31 is inserted into the slots 30 by inserting the jumper wires 26 into the holes 32. Subsequently, the jumper wires 26 are welded to the end faces of the strands 1 of the layers 15, 17 by a laser or the like. |
