JPS61191232U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a half-cut sectional view showing an example of a print head of a wire dot printer according to this invention, FIG. 2 is a perspective view of a wire guide member of the print head of FIG. 1, and FIG. 3 is a metal composing the wire guide member. 4 is a sectional view of a stack of multiple thin metal plates, FIG. 5 is a half-cut sectional view of a print head of a conventional wire dot printer, and FIG. 6 is a wire guide in a conventional print head. It is a perspective view showing a member. 1... Core, 4... Yoke, 6... Armature, 7... Wire, 8... Spring member, 10...
Magnet, 11... Coil, 16, 17... Wire guide member, 18... Metal thin plate, 19...
Guide hole, 20...Surface hardening layer. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] a core that forms part of a magnetic path with the yoke; an armature that is disposed opposite to the front end surface of the core;
A printing wire fixed to the armature, a wire gas rod member that guides the wire by sliding it into a guide hole during a printing operation, a spring member that always applies a forward spring force to the armature, and the core. A wire guide hole is provided with a magnet that forms a magnetic pole for adhering the armature to overcome the spring force on the front end surface of the wire, and a coil that is wound around the core to generate a magnetic flux that eliminates the adsorption force of the armature when energized. 1. A printing head for a wire dot printer, characterized in that the wire guide member is constructed by laminating a plurality of metal thin plates having a hardened layer on at least one side thereof, and forming the wire guide member with this laminated body.