Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1983-08-11
1984-11-20
Budd, Mark O.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 50, 310194, 310217, H02K 346
Patent
active
044840969
ABSTRACT:
A field subassembly is assembled by positioning two coil supports adjacent respective core end faces of a ferromagnetic core. The core-engaging surfaces of the coil supports and the core end faces have respective surfaces which are uninterrupted by projections. During the assembly of the field, fasteners are pushed into the respective coil supports and the core such that the fasteners engage mounting holes in the coil support with a press-fit. After the field is wound, a brush holder subassembly is also pressed onto the fasteners and the resultant core subassembly is connected to a field housing by driving the fasteners in a conventional fashion. In the preferred embodiment, the fasteners provide a three-point contact with mounting holes formed in the coil supports and the brush holder subassembly. This enables the fasteners to maintain the coil supports and the brush holder subassembly in alignment with the core while shearing a minimum of material from the coil supports and brush holder subassembly when the fasteners are pushed into their respective mounting holes. Then, the same fasteners remain with the subassembly to connect the field subassembly to the field housing.
REFERENCES:
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patent: 2696569 (1954-12-01), Schumann
patent: 2939021 (1960-05-01), Gilchrist
patent: 2977491 (1961-03-01), Hueffed et al.
patent: 3333830 (1967-08-01), Spingler et al.
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patent: 3495109 (1970-02-01), Ames
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patent: 4340829 (1982-07-01), McCoy
Dibbern, Jr. John E.
Moores, Jr. Robert G.
O'Hara Frank J.
Sauerwein William D.
Black & Decker Inc.
Budd Mark O.
Murphy Edward D.
Sherer Ronald B.
Weinstein Harold
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