Rotor structure for dynamo electric machines subject to vibratory, shock, or temperature change effects

Abstract

To reliably place a winding on a cylindrical pole core of a claw pole rotor structure for an alternator subjected to extremes in shock, vibration and oscillatory loadings, for example for use with motorcycle alternators, the pole core is deformed by knurling, grooving, rifling, or the like, preferably extending in cross direction, and a layer of mesh or net structure insulating fabric material, preferably a linen mesh, is placed over the pole core, the woven fabric mesh structure mechanically interlocking with the deformations and projections on the surface of the rotor; preferably, a plurality of wraps of the layer are provided, the field winding being wound directly over the uppermost wrap of the fabric layer in the form of a toroidal winding and, after assembly with the claw poles, the entire structure is impregnated with a suitable insulating compound, for example by vacuum impregnation, in accordance with standard dynamo electric machine construction.

Dependencies are inferred from the claim text.