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Browse Prior Art Database

Wire Matrix Lever Arm Actuator Assembly with Flexible Pivot

IP.com Disclosure Number: IPCOM000045743D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Sweat, RH: AUTHOR [+2]

Abstract

The present structure provides a plastic housing for a matrix printhed or for a missile-type impact printhead which is easy to produce and minimizes the number of parts which must be assembled. The use of such a plastic housing is made possible by the recognition that a portion of he housing itself may be used as a flexible hinge to the armature which is driven against the stylus in a wire matrix printhead or against the missile in a missile-type impact printer. In a wire matrix printhead, a head may now be provided which is easy to assemble and has a minimum of parts.

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Wire Matrix Lever Arm Actuator Assembly with Flexible Pivot

The present structure provides a plastic housing for a matrix printhed or for a missile-type impact printhead which is easy to produce and minimizes the number of parts which must be assembled. The use of such a plastic housing is made possible by the recognition that a portion of he housing itself may be used as a flexible hinge to the armature which is driven against the stylus in a wire matrix printhead or against the missile in a missile-type impact printer. In a wire matrix printhead, a head may now be provided which is easy to assemble and has a minimum of parts.

With reference to the figure, the structure consists of lever arm 10 driven through the action of armature 11 and stator 12 on which coil 13 is mounted. The arm 10 drives wire missile assembly 14 which consists of missile armature 15 and wire stylus 16 which may be part of an overall wire matrix assembly. Plastic housing has a portion 17 supporting the stator 12 and a portion 18 supporting the armature. The position of the armature with respect to the stator is determined by the supporting positions for these two members when molded. A pivot portion 19, joining plastic housings 17 and 18, represents the pivot about which coil 13 acts on stator 12 to pivot armature 11 and consequently arm 10 to drive the wire missile assembly 14 against the restoring bias of spring 20. The initial position of lever arm 10 and wire missile assembly 14 is pro...