| 摘要 |
A flat type vibrating motor capable of providing a big vibration while a size is reduced and eliminating a start dead point, wherein a ring-shaped stator (4) divided into eight parts in circumferential direction and magnetized alternately to N-pole and S-pole and a rotatable generally fan-shaped rotor (5) opposed face-to-face to the stator (4) are disposed in a casing (3), three armature coils (11a, 11b, 11c) of 60 DEG in coil winding angle are disposed in the rotor (5) at disposition pitches of 150 DEG and 60 DEG , a non-magnetic weight member (21) is disposed between the armature coils (11a, 11b), a commutator substrate (14) having twelve commutators (10) arranged parallel with each other thereon in circumferential direction is fixed, and a pair of brushes (12) are formed so as to come into contact with the commutators (10) at an electrical angle of 135 DEG .
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