| 摘要 |
A core for a flexispline motor is enclosed within a distortable flexispline having the shape of an open tin can, such that under rest conditions the spa ce between the flexispline and the core is constant. The core of the motor is shaped as in a hub and spoke configuration, with spokes having variable widths. Coils are fitted to the spokes and are connected in pairs such that pairs of coils on opposing spokes are in series bucking relationship. A seco nd set of coils, which overlap the first coils, can be connected in a non-bucki ng manner to increase the magnetic flux produced by the coils on opposing spoke s. The flexispline has a flexible ring gear incorporated in its surface near th e open end which when magnetically attracted ceases to have a circular shape a nd forms a two-lobe (elliptical) or three-lobe shape. Under these conditions th e corresponding points of the shape so formed contact a ring gear which is mounted on a rotating hub. The points of the flexible ring gear which correspond to the minor axes contact the surface of the core. As the magneti c force rotates the distorted shape rotates, but the flexispline itself does n ot rotate. Because the number of teeth on the ring gear and the flexible gear a re different, the hub is forced to rotate at reduced speed. An alternative construction embodies a splined locking arrangement to rotatably fix an open cylinder, composite material flexispline to the electromagnetic core. Other concentric pairs of inner and outer electromagnetic winding arrangements achieve pull-in pull-out flexispline distortion of elliptical or threelobe shape.
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