Stator and axial-gap brushless vibration motor incorporating the stator
AssigneeTokyo Parts Industrial Co., Ltd.
InventorTadao Yamaguchi
Life of this patent
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Abstract
A stator has a stator base including a printed circuit board provided on a nonmagnetic or weakly magnetic bracket having a shaft support section disposed in the center thereof, a single-phase connected air-cored armature coil provided on the stator base, and a drive circuit member provided on the stator base so as not to overlap the air-cored armature coil. The stator base has a groove hole extending outwardly from a central through hole. A detent torque section extending radially from the center of a detent torque generating member composed of a magnetic body and provided around the shaft support section is accommodated in the groove hole so as to be confined in the stator base in the thickness direction thereof.
Claims2
A stator, comprising:
- one of a nonmagnetic and weakly magnetic bracket having a shaft support section disposed in a center thereof;
- said shaft support section comprising a plurality of support sections protruding from said bracket and a resin bearing is formed such that said support sections are embedded therein;
- a stator base including circuitry carried thereon being further disposed on the bracket;
- at least one single-phase air-cored armature coil provided on the stator base;
- a drive circuit member being disposed on the stator base so as not to overlap said at least one single-phase air-cored armature coil;
- and
- a detent torque generating member comprising a magnetic body, at least a part of the detent torque generating member being accommodated inside the stator base in a thickness direction thereof.
Dependencies are inferred from the claim text.