| 摘要 |
PROBLEM TO BE SOLVED: To provide a stator stack which can prevent a drop of starting torque. SOLUTION: The stator is composed of a plurality of stator stacks 31 and coils. A ring part 34 is provided around the circular hole 32 of the stator stack 31, and a winding part 35 whereon winding is to be wound is extended from the ring part 34. The tip of the winding part 35 is provided with a magnetic pole 41 which extends in the circumferential direction of the stator stack 31. A coil retaining space 42 of a coil 25 is made between the magnetic pole 41 and the ring part 34, and an insertion part 43 for winding wound on the winding part 35 is provided between adjacent magnetic poles 41. A rectilinear straight part 62 orthogonally crossing the extensional direction 61 of the corresponding winding part 35 is made at the inner edge of the magnetic pole 41, and the tip 63 of the magnetic pole 41 is tapered. At the tip of each tip part 63, a projection 64 projected toward its center is made in such form that it has projected from the straight part 62. COPYRIGHT: (C)2005,JPO&NCIPI |
