High-speed, high-efficiency electromagnetic print hammer...

Details High-speed, high-efficiency electromagnetic print hammer... High-speed, high-efficiency electromagnetic print hammer...

H - Electricity

01

F

310/54, 101/98

H01F 7/16 (2006.01) B41J 9/127 (2006.01) B41J 9/38 (2006.01) H01F 7/13 (2006.01)

Patent

CA 1135317

HIGH-SPEED, HIGH-EFFICIENCY ELECTROMAGNETIC PRINT HAMMER ACTUATOR ABSTRACT Electromagnet with a moving armature, in particular for use in print hammer actuators, consisting of two symmetrically designed magnetizable yoke halves embraced by one coil each. The pole ends of the yoke halves facing each other form two aligned operating gaps. An element (tongue) resembling an armature is arranged between the operating gaps. The tongue consists of two armature bars of magnetizable material, each of which is associated with one operating gap. The armature bars are geometrically designed in such a manner that their volume is of an order of magnitude equalling that of the operating gaps. In the starting position of the tongue, the armature bars are positioned in front of the operating gaps of the non-excited electromagnet. Upon excitation of the electromagnet, the armature bars are pulled into the operating gaps, being accelerated in the process. GE9-79-026

354067

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