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Coil winding armatures with parallel coils

  • US 5,044,065 A
  • Filed: 05/24/1990
  • Issued: 09/03/1991
  • Est. Priority Date: 05/24/1990
  • Status: Expired due to Term
First Claim
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1. A method of winding an armature of an electric motor, comprising the steps of:

  • producing a subassembly comprising an armature core and a commutator mounted on a shaft, the commutator having a plurality of bars each having a pair of wire securing devices;

    winding pairs of electrically parallel coils on said core and connecting each pair of parallel coils between a respective pair of commutator bars;

    said connecting comprising attaching one coil of a said pair of parallel coils to one of the pair of wire securing devices on a respective commutator bar and attaching the other coil of this pair of parallel coils to the other of the same pair of wire securing devices of the same respective commutator bar, and also attaching one coil of another said pair of parallel coils to said one wire securing device of this same respective commutator bar and attaching the other coil of said another said pair of parallel coils to said other of the same pair of wire securing devices of said same respective commutator bar; and

    said winding and connecting steps continuing until each commutator bar has four coils attached thereto with two of the four coils being non-parallel coils and being attached by one wire securing device of that commutator bar and the remaining two coils of the four coils also being non-parallel coils and being attached by the other wire securing device of that commutator bar.

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