Rotary actuator

Details Rotary actuator Rotary actuator

1996-01-25

1998-01-13

Gellner, Michael L.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

310156, 310254, 310 49R, H01P 110, H01F 708

Patent

active

057084068

ABSTRACT:
An improved rotary actuator having a reduced height is disclosed. The actuator has a stator core having excitable poles and yokes, a rotor with a rotor magnet, a bobbin frame having a rotor container and bobbin portions with excitable coils. The rotor container has a bore for receiving the rotor and magnet openings for receiving a pair of stator magnets. Each bobbin portion has a slot for receiving the excitable pole. The yokes are placed at the both sides of the bobbin. The rotor container has magnetic pole slots extending in an axial direction of the rotary magnet, each of which is open to the bore and communicates with the associated pole receiving slot of the bobbin portion. Magnetic pole pieces are mounted in the magnetic pole slots. Each magnetic pole piece has a surface facing the rotor magnet and another surface magnetically connected to the stator core.

REFERENCES:
patent: 1929787 (1933-10-01), Mudge
patent: 3021444 (1962-02-01), Simmons et al.
patent: 4447793 (1984-05-01), Gray
patent: 5275141 (1994-01-01), Tsunoda et al.

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