GB1232446A - - Google Patents

Abstract

1,232,446. Electromagnetic actuator. BINDER MAGNETE K.G. 2 Aug., 1968 [11 Aug., 1967], No. 36935/68. Heading H1P. As shown, Fig. 1, an electromagnetic actuator comprises an E-shaped core 3 the outer legs of which are surrounded by two coils 2a, 2b so that their ends lie within the coils, and a two armed armature 1 rotatably mounted on the centre leg of the core 3 so that the arms can plunge into the interiors of the coils. The centre leg of the core 3 is provided on opposite faces with T-shaped plates (9), 10, between which the armature 1 is pivoted by means of a pin 7. The outer legs and spine of the core are provided on opposite faces with U-shaped plates 4, 5. The ends of the plates 4, 5 extend past the ends of the outer arms of the core 3 within the coils and are shaped to provide the required force characteristics, Figs. 3a to 3c (not shown). The power take-off can be by means of a push rod 12, an extension of pivot pin 7, or a cam surface 13. The T- and U-shaped plates may be attached to the E-shaped core by welding, sticking or riveting, and all the magnetic parts may be produced by stamping. The core and armature may be laminated for A.C. use and the armature may be asymmetrically shaped. The armature may be spring biased to provide a bi-stable or a centre-stable arrangement, Figs. 5a and 5b (not shown).