Dana Corporation

Richard A Baronosky

Peter Senak, Jr

Martin Kaplan

Steven H Wollins

A variable reluctance motor is disclosed including a stator having a plurality of radially inwardly extending poles. A coil of foil wire is mounted about each of the stator poles. Flats are formed in the inner surface of the stator adjacent to the sides of each of the stator poles so that the coils of foil wire can lie flat thereagainst. A pair of rigid cylindrical retainers are provided for retaining the coils of foil wire on the poles. A rotor assembly is disposed within the stator. The rotor assembly includes a shaft having a rotor secured thereto. A plurality of radially outwardly extending poles are formed on the outer surface of the rotor. Electrical current is selectively passed through each of the coils of foil wire to cause the rotor assembly to rotate relative to the stator. Each of the coils of foil wire is wound beginning with a start winding and ending with a finish winding. The foil wires in each of the start and finish windings are employed as lead wires for connecting the coils to a control circuit for passing electrical current through the coils. A novel structure for orienting the various start and finish windings about the circumference of the stator is also disclosed.

Variable reluctance motor having foil wire wound coils

A bobbin for use in an electric motor is formed in the nature of a clam shell, having two semi-cylindrical side portions which are joined together by a flexible hinge portion. Each of the side portions includes a plurality of smaller diameter regions which are separated from one another by larger diameter regions. When the two side portions of the bobbin are closed together by bending of the hinge portion, the smaller diameter regions cooperate to define respective cylindrical surfaces upon which coils of an electrical conductor can be wound. A pair of outwardly extending tabs can be formed on each of the larger diameter regions of the bobbin. When the two side portions of the bobbin are folded together, the two pairs of tab are disposed adjacent to one another. The upper and lower halves of the stator have respective pairs of recesses formed therein. The recesses are sized and positioned so as to receive the cooperating pairs of tabs therein. The cooperation of the tabs with the recesses can position the bobbin concentrically relative to the stator halves and prevent relative rotation therebetween. If desired cooperating locking structures can be formed on the tabs to retain them together before winding of the coils thereon.

Bobbin structure for electromagnetic coil assembly

A structure for retaining bobbin wound electromagnetic coil assemblies on the poles of an electric motor is disclosed. Each coil assembly includes a bobbin having an opening formed therein which defines an interior space within which the motor poles are received. The ends of the bobbin are formed having pairs of opposed flange portions, each of which is generally flat and rectangular in shape. The flange portions extend from the upper and lower sides of each end of the bobbin, defining generally U-shaped end portions. The inwardly facing surfaces of the flange portions are each formed having an outer tapered surface and an inner groove extending thereacross. Wire is wound about the exterior surface of the bobbin, extending between the opposed flange portions at the ends of the bobbin. A pair of coil retainers are provided for retaining the coil assemblies on their respective stator poles during use. The coil retainers are each formed from a flat sheet of rigid material. When installed, the coil retainers engage the grooves formed on the flange portions of the bobbins to support the coil assemblies on the poles of the motor. A cylindrical rotor assembly is supported concentrically within the stator for rotation relative thereto.

Growing community of inventors

Bristol, CT, United States of America

Richard A Baronosky