| 摘要 |
PROBLEM TO BE SOLVED: To prevent magnetic flux saturation in an armature having a core of such a structure that the tip portion and the winding portion of a tooth of each core plate are displaced in the direction of the central axis with its coupling portion in-between. SOLUTION: A core used in the armature of a motor is a laminate of multiple core plates 5. Each core plate 5 has multiple teeth 51 radially disposed with the central axis J1 at the center with their tips facing toward the central axis J1. Each of the teeth 51 includes: the winding portion 511 connected to a core back portion 52 and used to wind the coils of the armature; the tip portion 513 disposed in a position different from that of the winding portion 511 with respect to the direction of the central axis J1 on the side closest to the central axis J1; and the coupling portion 512 that is inclined from a plane perpendicular to the central axis J1 and magnetically couples together the tip portion 513 and the winding portion 511. The width of the coupling portion 512 is greater than that of the winding portion 511 in the direction of circumference with the central axis J1 at the center. Thus, magnetic flux saturation is easily prevented in the armature. COPYRIGHT: (C)2007,JPO&INPIT |
