Miniature motor with frangible magnet retaining boss

Details Miniature motor with frangible magnet retaining boss Miniature motor with frangible magnet retaining boss

1986-09-12

1987-06-30

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

29596, 264138, 264152, 310 42, 310 89, H02K 1514, H02K 2128

Patent

active

046773304

ABSTRACT:
A miniature motor comprising a hollow tubular-shaped large case having a magnet along the inner circumferential surface thereof, and a small case (end bell) fitted to the large case and having brush holders, made of a synthetic resin, and magnet retaining bosses making contact with the magnet; and characterized in that each of the brush holders has a boss insert hole into which the magnet retaining boss is press-fitted; one end of the magnet retaining boss being pushed by the magnet, at small case installation, causing the magnet retaining boss to be press-fitted into the boss insert hole, whereby the small case is fitted into the large case in a state where the end of the magnet retaining boss makes contact with the magnet.

REFERENCES:
patent: 2306233 (1942-12-01), Smith
patent: 3838300 (1974-09-01), O'Connor, III
patent: 4302637 (1981-11-01), Ditzig
patent: 4445060 (1984-04-01), Ruhle et al.

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