Stepping motor

Details Stepping motor Stepping motor

1999-01-25

1999-08-31

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 89, 310 49R, 310259, H02K 516

Patent

active

059457597

ABSTRACT:
To facilitate manufacture of casings of a stepping motor and simultaneously to enhance the performance thereof, a rotor (5) is mounted on a rotary shaft (1), the rotor (5) is supported to the casings (6) and (7) by pressing a metal plate, a bush (13) made of non-magnetic material is retained to at least one of the casings (6) and (7), and an inner circumferential portion of a stator core (10) provided between the casings (6) and (7) is supported by the bush (13). Since a gap between the outer circumferential portion of the rotor (5) and the inner circumferential portion of the stator core (10) may be kept constant by the bush (13), a performance of rotation is enhanced, and since the bush is made of non-magnetic material, magnetism generated in the stator core (10) does not leak to the casings (6) and (7).

REFERENCES:
patent: 4528473 (1985-07-01), Tezuka
patent: 5166565 (1992-11-01), Katsuzawa et al.
patent: 5723926 (1998-03-01), Obara et al.

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