JPS58166442U

JPS58166442U - print head

Info

Publication number: JPS58166442U
Application number: JP6352482U
Authority: JP
Inventors: 政行田中; 川畑　和己; 村田　和之
Original assignee: 富士通株式会社
Priority date: 1982-04-30
Filing date: 1982-04-30
Publication date: 1983-11-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案が適用されるワイヤートッドプリンクの
概要を例示する平面図ミ第゛２図は第１図　　−の印字
ヘッドの印字マグネット部を示す斜視図、第３図は第２
図の側面図、第４図は印字ヘッドの　　　　−側断面図
、第５図は第４図のアーマチア部の背面図、第６図は異
なる従来例を余す側面図、第７図は本考案による実施例
を示す側面図、第８図は異なる実施例を示す側面図であ
る。図において、１はコア、２はコイル、３はアーマチア、
４は印字ワイヤー、６は駆動バネ、７ａ。７ｆは磁路部、７ｂはマグネットベース、７ｄ。７ｅ、７ｇ　〜７ｊ、２２ａ、２２ｂ、２３．　２４は
磁気バイパス、２１は印字ヘッド、２１ａは印字マグネ
ット、２３ａ、２４ａはダボを示す。慾５図了　　　　− ′　　　　　　　　　　已　　、ＩＩノ・）、＝７ａ　　　　１４　ｙ徽″Fig. 1 is a plan view illustrating the outline of a wire head link to which the present invention is applied; Fig. 2 is a perspective view showing the print magnet section of the print head shown in Figs.
Figure 4 is a side sectional view of the print head, Figure 5 is a back view of the armature section in Figure 4, Figure 6 is a side view of a different conventional example, and Figure 7 is a side view of the print head according to the present invention. FIG. 8 is a side view showing an embodiment. FIG. 8 is a side view showing a different embodiment. In the figure, 1 is the core, 2 is the coil, 3 is the armature,
4 is a printing wire, 6 is a drive spring, and 7a. 7f is a magnetic path section, 7b is a magnet base, and 7d. 7e, 7g to 7j, 22a, 22b, 23. 24 is a magnetic bypass, 21 is a print head, 21a is a print magnet, and 23a and 24a are dowels.慾 5 fig 了 - ′ 已 , II ノ・) , = 7a 14 y 徽''

Claims

[Scope of utility model registration request]

(1) An armachia having a printing wire at one end and supported by a drive spring, and a magnetic field provided opposite the armachia and using the armature as a magnetic path to cause printing to be driven by the printing wire. an electromagnet; a permanent magnet that creates a magnetic field that attracts the armature to the electromagnet against the elasticity of the drive spring when the electromagnet is not excited;
, a magnetic path section that accommodates the electromagnet and a plurality of pairs of the armatias and forms a magnet base having a magnetic bypass member for the permanent magnet, and excites the electromagnet to eliminate the attraction force of the attracted armathias. and a release type print head for a wire tod printer in which the printing wire is driven by the restoring force of the drive spring,
The print head is characterized in that the magnetic bypass member is constituted by a ring-shaped member separated from the magnetic path section.

(2) The print head according to claim 1, wherein the ring magnetic bypass member has a plurality of convex portions of a predetermined height at a contact position with the magnetic path portion.