Swing-type actuator with thin reinforced movable coil

Details Swing-type actuator with thin reinforced movable coil Swing-type actuator with thin reinforced movable coil

1991-03-20

1992-09-15

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

29605, 310 15, 336 65, 360106, H02K 2326, H02K 3316, G11B 555

Patent

active

051480719

ABSTRACT:
The swing-type actuator includes (a) a housing comprising a pair of yokes opposing each other and a permanent magnet attached to at least one of the yokes for defining a magnetic gap therebetween, (b) a swingable arm having one end to which a hold member encompassing a periphery of a movable coil is fixed, and the other end to which a function member is fixed, such that the movable coil is swingable in the magnetic gap, and (c) a thin non-magnetic plate adhered to at least part of a surface of the movable coil facing the permanent magnet. The hold member is made of a thermoplastic resin and molded integrally with the movable coil and the arm, and the hold member has substantially the same thickness as that of the movable coil.

REFERENCES:
patent: 4150407 (1979-04-01), Dijkstra
patent: 4196456 (1980-04-01), Manzke
patent: 4544973 (1985-10-01), Van De Bult
patent: 4553058 (1985-11-01), Iwasaki
patent: 4639624 (1987-01-01), Ejiri et al.
patent: 4849840 (1989-07-01), Fujiyoka
patent: 4855853 (1989-08-01), Matsushita et al.
patent: 4879617 (1989-11-01), Sampietro et al.
patent: 4949194 (1990-08-01), MacPherson et al.
patent: 4951023 (1990-08-01), Erd et al.
patent: 4985652 (1991-01-01), Oudet et al.
patent: 5034837 (1991-07-01), Schmitz

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