초록 ▼

A direct-current motor includes a core including a plurality of teeth arranged in a circular disposition so as to define a plurality of slots, the teeth having distal ends and coil-winding sections respectively, coils wound on the coil-winding sections of the teeth respectively, and pole sections ea

A direct-current motor includes a core including a plurality of teeth arranged in a circular disposition so as to define a plurality of slots, the teeth having distal ends and coil-winding sections respectively, coils wound on the coil-winding sections of the teeth respectively, and pole sections each of which is provided at a distal end side of the corresponding tooth and is circumferentially wider than the corresponding coil-winding section. In the motor, the teeth include first teeth having wider pole sections respectively and second teeth having pole sections narrower than the first teeth. Notches are formed in circumferential corners of the pole sections of the first teeth or members substantially integral with the pole sections of the first teeth respectively.

대표청구항 ▼

[ We claim:] [1.] A direct-current motor comprising:a core including a plurality of teeth arranged in a circular disposition and defining a plurality of slots, the teeth having distal ends and coil-winding sections respectively;slot insulating members disposed to cover outer peripheries of the teeth

[ We claim:] [1.] A direct-current motor comprising:a core including a plurality of teeth arranged in a circular disposition and defining a plurality of slots, the teeth having distal ends and coil-winding sections respectively;slot insulating members disposed to cover outer peripheries of the teeth respectively;coils wound on the coil-winding sections of the teeth with the slot insulating members being interposed therebetween, respectively; andpole sections, each pole section provided at a distal end side of a corresponding tooth and is circumferentially wider than a corresponding coil-winding sections;wherein the teeth include first teeth having wider pole sections respectively and second teeth having pole sections narrower than the first teeth; andwherein the slot insulating members have notches in portions thereof located at circumferential corners of the pole sections of the first teeth respectively.