Electric motor
First Claim
1. An electric motor comprising:
- a stator;
a rotor rotatable relative to the stator;
a winding part mounted on one of the stator and rotor and comprising an armature with a plurality of windings thereon;
an annular outer surface on the winding part facing radially outwardly;
an annular inner surface on the winding part facing radially inwardly;
a first interior chamber defined by the annular inner surface;
a first field part comprising a first set of magnets in the first interior chamber providing a magnetic field in which the windings are disposed;
a second field part comprising a second set of magnets positioned radially outwardly of the annular outer surface providing a magnetic field in which the windings are disposed; and
wherein the field parts are mounted on the other of the stator and rotor.
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Accused Products
Abstract
An electric motor produces an increased output torque for a given amount of input electrical current by using two magnetic field parts adjacent a winding part. Preferably, the winding part is disposed between the field parts. In a first embodiment, the two field parts are radially spaced from one another with the winding part therebetween. One field part is mounted on a hollow post through which an output shaft extends and on which a bearing is mounted for rotatably supporting thereon the winding part. In a second embodiment, the field parts are axially spaced from one another with the winding part therebetween. Axially spaced mounting wheels are connected to the output shaft for supporting therebetween a plurality of windings. The third embodiment includes a plurality of output shafts and a rotor suspended by interaction between pinions on the shafts and rotor gears.
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Citations
20 Claims
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1. An electric motor comprising:
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a stator; a rotor rotatable relative to the stator; a winding part mounted on one of the stator and rotor and comprising an armature with a plurality of windings thereon; an annular outer surface on the winding part facing radially outwardly; an annular inner surface on the winding part facing radially inwardly; a first interior chamber defined by the annular inner surface; a first field part comprising a first set of magnets in the first interior chamber providing a magnetic field in which the windings are disposed; a second field part comprising a second set of magnets positioned radially outwardly of the annular outer surface providing a magnetic field in which the windings are disposed; and wherein the field parts are mounted on the other of the stator and rotor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification