Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-07-10
2000-08-15
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Rotary
310 91, 310 67R, 310 71, 384126, H02K 516, H02K 500, H02K 714, H02K 1100, F16C 2100
Patent
active
061041149
ABSTRACT:
The brushless motor according to the present invention is small in overall height without deterioration of the rotational accuracy. One of a pair of bearings is interposed between the base plate and the rotor and located on the radially outside of the other one of the bearings. A plurality of receiving holes is formed on the base plate to correspond to the teeth of the stator core to provide an axially space for respectively accommodating coils wound around the stator core. Thus, in spite of the motor having such a small axial clearance between the base plate and the rotor, sufficient amount of winding of coil is ensured. The receiving holes are closed from the outside of the motor with a sheet member and an adhesive is filled therein for fixedly securing the coil of the stator. The adhesive further acts as a damper to absorb magnetic vibration generated at the stator.
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Takeda Kazuhiro
Urakami Hitoshi
LaBalle Clayton
Nidec Corporation
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