Step motor

Details Step motor Step motor

1986-09-16

1988-06-14

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 80, 310 83, H02K 3700

Patent

active

047514116

ABSTRACT:
A step motor of the linear type is composed of a shaft threadedly engaged with an inner hole provided in a rotor and is driven in the axial direction by rotation of the rotor. A bearing for slidably supporting the shaft for axial movement is installed in a rear cover for covering the rear end of the shaft and an enclosing member for the rear end of the shaft is formed in the rear cover. A spring shoe and a coil spring are fitted to the rear end of the shaft enclosed in the enclosing member. Consequently, the assembly of the coil spring and the spring shoe becomes simple, and the coil spring is not exposed. The form of the front portion of the step motor is made more compact in comparison to that of the prior art where the coil spring is externally installed to the front end of the shaft.

REFERENCES:
patent: 2978621 (1961-04-01), Martinek
patent: 3159758 (1964-12-01), Hemperley, Jr. et al.
patent: 4333026 (1982-06-01), Bock et al.
patent: 4381747 (1983-05-01), Kobayashi et al.
patent: 4393319 (1983-07-01), Bock
patent: 4438361 (1984-03-01), Manson
patent: 4480614 (1984-11-01), Kobashi et al.
patent: 4496865 (1985-01-01), Allen et al.
patent: 4501981 (1985-02-01), Hansen
patent: 4588913 (1986-05-01), Adami

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