Step motor

Details Step motor Step motor

1998-09-23

2000-12-05

LaBalle, Clayton

Electrical generator or motor structure

Dynamoelectric

Rotary

310 80, H02K 3714, H02K 3724, H02K 706

Patent

active

061571032

ABSTRACT:
A step motor is provided that makes it possible to lower the manufacturing cost and accurately control the movement of a holder. The step motor is provided with: a motor case (3); a hollow columnar stator (4) which is provided inside the motor case (3) and which generates a magnetic field; a rotor (42) which is rotatably provided in the stator (4) and which rotates in steps according to the generated magnetic field of the stator (4); an actuating shaft (43) which is fixed to the rotor (42) and which has a threaded portion (53) at one end thereof; a holder (45) which is threadably engaged with the threaded portion (53) and which is movable in the axial direction; and a guide (44) which is fixed to the motor case (3), which prevents the rotational motion of the holder (45), and which guides the holder (45) to move in the axial direction.

REFERENCES:
patent: 3694909 (1972-10-01), Hallerback
patent: 4393319 (1983-07-01), Bock
patent: 5052656 (1991-10-01), Katayama
patent: 5060910 (1991-10-01), Iwata et al.
patent: 5137255 (1992-08-01), Sumida et al.
patent: 5138208 (1992-08-01), Kondo et al.
patent: 5501201 (1996-03-01), Miyoshi et al.
patent: 5912520 (1999-06-01), Kobayashi et al.

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