JPS6139563Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案はワイヤドツトプリンタ用ヘツドに関す
るもので、その目的とするところは、万一インキ
が完全に乾燥固化してもワイヤを折損させること
がなく、ワイヤの摺動時の摩擦抵抗を小にし高速
印字を可能にすると共にプランジヤーの消費電力
を少くして電源を小型化せんとするにある。[Detailed description of the invention] This invention relates to a head for wire dot printers.The purpose of this invention is to prevent the wire from breaking even if the ink completely dries and solidifies, and to prevent the wire from breaking when the wire slides. The purpose is to reduce the frictional resistance, enable high-speed printing, and reduce the power consumption of the plunger to downsize the power supply.

従来のワイヤドツトプリンタ用ヘツドは第１
図、第２図に示す如く、ワイヤ保持部１の通孔１
ａに複数本のワイヤ２を直線状に摺動自在に挿通
し該ワイヤ２の両側にインキ吸蔵体収納凹部１ｂ
を形成し、該インキ吸蔵体収納凹部１ｂにインキ
吸蔵体３を収納し、その外面を常時ワイヤ２に接
触させていた。従つて万一ワイヤが乾燥固化する
と、ワイヤ２がインキ吸蔵体３表面に固着し、こ
の状態でワイヤを摺動しようとするとワイヤを折
損させることがあり、又ワイヤ２がインキ吸蔵体
３に接触摺動するので摩擦抵抗が大きく、大きな
駆動力を要し、ワイヤを駆動するプランジヤー６
が過熱し、又ワイヤを高速駆動するとインキ吸蔵
体のワイヤ摺動面が急速に摩耗し、ワイヤ摺動時
にインキ吸蔵体の一部がゴミとして印字紙５に付
着するので高速印字ができず更にワイヤ２へのイ
ンキ付着ができなくなるという欠点があつた。 Conventional wire dot printer heads are
As shown in FIG. 2, the through hole 1 of the wire holding part 1
A plurality of wires 2 are slidably inserted in a straight line through the wires 2, and an ink storage body storage recess 1b is formed on both sides of the wires 2.
The ink storage body 3 was stored in the ink storage body storage recess 1b, and its outer surface was always in contact with the wire 2. Therefore, if the wire dries and solidifies, the wire 2 will stick to the surface of the ink absorber 3, and if you try to slide the wire in this state, the wire may break, and the wire 2 may come into contact with the ink absorber 3. The plunger 6 that slides has a large frictional resistance and requires a large driving force to drive the wire.
If the wire overheats and the wire is driven at high speed, the wire sliding surface of the ink storage body will wear rapidly, and part of the ink storage body will adhere to the printing paper 5 as dust when the wire slides, making high-speed printing impossible. There was a drawback that ink could not be attached to the wire 2.

本考案はワイヤとインキ吸蔵体の間にインキが
通過し得る多数の小孔又はスリツトを有する仕切
板を設けて従来の欠点を除くようにしたものであ
る。 The present invention eliminates the drawbacks of the prior art by providing a partition plate between the wire and the ink absorber having a large number of small holes or slits through which ink can pass.

第３図は本考案の第１の実施例でワイヤ保持部
１１の通孔１１ａに複数本のワイヤ１２を直線状
に摺動自在に挿通し該ワイヤ１２両側にインキ吸
蔵体収納凹部１１ｂを形成し、インキ吸蔵体収納
凹部１１ｂとの間に仕切板１１ｃを一体に形成
し、該仕切板１１ｃにインキを通過し得る多数の
小孔、又はスリツトを形成し、インキ吸蔵体収納
凹部１１ｂにインキ吸蔵体１３を収納している。 FIG. 3 shows a first embodiment of the present invention, in which a plurality of wires 12 are slidably inserted in a straight line through a through hole 11a of a wire holding portion 11, and ink storage body storage recesses 11b are formed on both sides of the wires 12. A partition plate 11c is integrally formed between the ink absorber storage recess 11b, and a large number of small holes or slits through which ink can pass are formed in the partition plate 11c, so that ink does not enter the ink absorber storage recess 11b. It houses the storage body 13.

第４図は本考案の第２の実施例で上記第１の実
施例に於ける仕切板１１ｃに相当する仕切板１１
c′を別体にて形成し、接着、溶接、嵌合等により
ワイヤ保持部１１と一体に固定又は着脱自在に取
り付けられている。 FIG. 4 shows a second embodiment of the present invention, and shows a partition plate 11 corresponding to the partition plate 11c in the first embodiment.
c' is formed separately and is fixed or detachably attached to the wire holding part 11 by adhesion, welding, fitting, etc.

次に作用について説明する。ワイヤ１２がプラ
ンジヤーによつて後后に摺動すると、ワイヤ１２
は仕切板１１ｃ，１１c′と極く僅の間隙をもつて
摺動し、この仕切板１１ｃ，１１c′の間からイン
キ吸蔵体１３中のインキがワイヤ１２側に浸透
し、ワイヤ１２にインキが付着し、ワイヤ１２の
前後摺動に伴つてワイヤ１２の先端に移動しワイ
ヤ１２が前進した時プラテン４上の印字紙５にド
ツトによる文字を印字する。仕切板１１ｃ，１１
c′とワイヤ１２との間隙は極く僅なため、仕切板
１１ｃ，１１c′の多数の小孔又はスリツトより浸
透したインキは表面張力により常に濡れた状態に
なり、インキタンク７より常にインキが補給され
るので、インキが途切れることはない。 Next, the effect will be explained. When the wire 12 is slid backward by the plunger, the wire 12
slides on the partition plates 11c, 11c' with a very small gap, and the ink in the ink storage body 13 penetrates into the wire 12 side from between the partition plates 11c, 11c', and the ink is applied to the wire 12. The dots adhere to the dots and move to the tip of the wire 12 as the wire 12 slides back and forth, and when the wire 12 moves forward, dot characters are printed on the printing paper 5 on the platen 4. Partition plates 11c, 11
Since the gap between c' and the wire 12 is extremely small, the ink that permeates through the many small holes or slits in the partition plates 11c and 11c' remains wet due to surface tension, and the ink is constantly removed from the ink tank 7. Since the ink is replenished, the ink never runs out.

本考案によればワイヤはインキ吸蔵体と直接摺
接せず、ごく僅の間隙を存して仕切板上を摺動す
るので万一インキが乾燥固化してもワイヤが折損
することがなく、又摺動時の摩擦抵抗が極めて小
さく高速印字を行うことができ、又プランジヤー
の消費電力も少くてすむので電源を小型化でき
る。 According to the present invention, the wire does not come into direct sliding contact with the ink storage body, but instead slides on the partition plate with a very small gap, so even if the ink dries and solidifies, the wire will not break. Furthermore, the frictional resistance during sliding is extremely small, allowing high-speed printing, and the power consumption of the plunger is also low, so the power supply can be made smaller.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来例の斜視図、第２図は第１図のＡ
−Ａ平断面図、第３図は本考案の第１実施例の平
断面図、第４図は本考案の第２実施例の平断面図
である。 １１……ワイヤ保持部、１１ａ……通孔、１１
ｂ……インキ吸蔵体収納凹部、１１ｃ，１１c′…
…仕切板、１３……インキ吸蔵体、１２……ワイ
ヤ。 Figure 1 is a perspective view of the conventional example, and Figure 2 is A of Figure 1.
3 is a plan sectional view of the first embodiment of the present invention, and FIG. 4 is a plan sectional view of the second embodiment of the present invention. 11...Wire holding part, 11a...Through hole, 11
b...Ink storage body storage recess, 11c, 11c'...
...Partition plate, 13...Ink absorber, 12...Wire.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ワイヤ保持部に複数本のワイヤを直線状に摺動
自在に挿通し該ワイヤの両側にインキ吸蔵体を配
設し、該インキ吸蔵体とワイヤとの間にインキが
通過し得る多数の小孔又はスリツトを有する仕切
板を設けたワイヤドツトプリンタ用ヘツド。 A plurality of wires are slidably inserted into the wire holding portion in a straight line, ink storage bodies are arranged on both sides of the wires, and a large number of small holes through which ink can pass are provided between the ink storage bodies and the wires. Or a wire dot printer head equipped with a partition plate having slits.