JPH0459256A - impact dot head - Google Patents

impact dot head

Info

Publication number
JPH0459256A
JPH0459256A JP17052090A JP17052090A JPH0459256A JP H0459256 A JPH0459256 A JP H0459256A JP 17052090 A JP17052090 A JP 17052090A JP 17052090 A JP17052090 A JP 17052090A JP H0459256 A JPH0459256 A JP H0459256A
Authority
JP
Japan
Prior art keywords
return spring
drive lever
lever
impact dot
dot head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17052090A
Other languages
Japanese (ja)
Inventor
Takashi Takeuchi
竹内　丘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP17052090A priority Critical patent/JPH0459256A/en
Publication of JPH0459256A publication Critical patent/JPH0459256A/en
Pending legal-status Critical Current

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  • Impact Printers (AREA)

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

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はインパクトドツトプリンタの印字ヘッドに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a print head for an impact dot printer.

〔従来の技術〕[Conventional technology]

従来の技術は印字ワイヤを駆動するレバー（以後駆動レ
バーと称する）及び馬区動レバーを待機位置に押し戻す
バネ（以後復帰バネと称する）は、固着されていなかっ
た。In the prior art, the lever for driving the printing wire (hereinafter referred to as the drive lever) and the spring for pushing the horse movement lever back to the standby position (hereinafter referred to as the return spring) were not fixed.

静的には、復帰バネ９は常に圧縮状態で使用されるため
復帰バネ９は、常時駆動レバー３に押し付けられた状態
にあるが、特定の周波数で駆動した場合に復帰バネ９は
共振してサージングをおこし、駆動部拡大図である第２
図に示すように復帰バネ９と駆動レバー３が固着されて
いないと復帰バネ９は、駆動レバー３と離れ、その後矢
印で示すように駆動レバー３に衝突する。この衝突の繰
り返しにより駆動レバー３及び復帰バネ９は、摩耗し、
駆動レバー折れないし復帰バネ切れをおこし短期間の使
用で印字不能となる。Statically, the return spring 9 is always used in a compressed state, so the return spring 9 is always pressed against the drive lever 3, but when driven at a specific frequency, the return spring 9 resonates. The second part, which is an enlarged view of the drive part, causes surging.
As shown in the figure, if the return spring 9 and the drive lever 3 are not fixed, the return spring 9 separates from the drive lever 3 and then collides with the drive lever 3 as shown by the arrow. Due to this repeated collision, the drive lever 3 and the return spring 9 are worn out,
The drive lever does not break and the return spring breaks, making printing impossible after a short period of use.

［発明が解決しようとする課題］ しかし、かかる従来のインパクトドツトヘッドは、駆動
するに従って駆動レバー及び復帰バネがその係合位置に
おいて摩耗し最終的に駆動レバー折れないし復帰バネ切
れに至りインパクトドツトヘッドの寿命を伸ばすことが
できないという問題点を有していた。[Problems to be Solved by the Invention] However, in such a conventional impact dot head, as it is driven, the drive lever and the return spring wear out at their engagement positions, and eventually the drive lever does not break or the return spring breaks, causing the impact dot head to fail. The problem was that it was not possible to extend the lifespan of the machine.

そこで、本発明は、従来のこのような問題点を解決する
ため、駆動レバー及び復帰バネがその係合位置において
摩耗せず、寿命の長いインパクトドツトヘッドを提供す
ることを目的とする。SUMMARY OF THE INVENTION In order to solve these conventional problems, it is an object of the present invention to provide an impact dot head in which the drive lever and return spring do not wear out in their engaged positions and have a long life.

［課題を解決するための手段］ 上記課題を解決するため、本発明のインパクトドツトヘ
ッドは、駆動レバー及び復帰バネを係合位置に８いて固
着したことを特徴とする。[Means for Solving the Problems] In order to solve the above problems, the impact dot head of the present invention is characterized in that the drive lever and the return spring are fixed at the engagement position.

［作用］ 本発明の上記の構成によれば、復帰バネが共振しサージ
ングを起こしたような場合にも駆動レバーと復帰ばねの
衝突が起こらない。従って、罵区動レバー及び復帰バネ
の係合位置における摩耗が無いため、インパクトドツト
ヘッドの寿命を伸ばすことができる。[Operation] According to the above configuration of the present invention, even if the return spring resonates and causes surging, a collision between the drive lever and the return spring does not occur. Therefore, since there is no wear at the engagement position of the retraction lever and the return spring, the life of the impact dot head can be extended.

［実施例〕 以下に本発明の実施例を図面にもとづいて説明する。第
１図は、本発明実施例のインパクトドツトヘッドの断面
図である。第１図下半分には電磁コイル１に通電しない
待機時の状態を示し、上半分には電磁コイル１に通電し
た印字時の状態を示している。回転運動による変位を拡
大し、印字ワイヤ２を駆動する駆動レバー３は図示して
いない軸受により回転軸４を介して回転自在に支持され
ており、電磁コイル１の巻回されているコア５に対向す
る位置にプランジャ６を備えている。駆動レバー３の先
端に固着された印字ワイヤ２はワイヤガイド７．８によ
り所定の位置へ案内されている。復帰バネ９はバネ座１
０と駆動レバー３との間に圧縮状態で挟み込まれ、駆動
レバー３をレバーストッパ１１側に押し付けることによ
り駆動レバー３を待機位置に位置決めする役割をはたし
ている。また、馬区動レバー３と復帰バネ９は、係合位
置においてロー付け、溶接、接着等の手段により固着さ
れている。以下印字動作を説明する。印字しようとする
時には、コイル１に通電することによりコア５、ヨーク
１２、プランジャ６を回る磁束を発生させプランジャ６
、コア５間の吸引力により駆動レバー３を回転軸４の回
りに回転させる。この時印字ワイヤ２は、梃子の原理に
より（印字ワイヤ２と回転軸４の距離）／（プランジャ
６と回転軸４の距離）の比でプランジャ６の変位より増
幅された変位だけワイヤガイド７．８に案内されながら
前進しインクリボン１３を介して印字紙１４をプラテン
１５に打ち付は衝撃印字する。[Examples] Examples of the present invention will be described below based on the drawings. FIG. 1 is a sectional view of an impact dot head according to an embodiment of the present invention. The lower half of FIG. 1 shows the standby state in which the electromagnetic coil 1 is not energized, and the upper half shows the printing state in which the electromagnetic coil 1 is energized. A drive lever 3 that magnifies the displacement caused by rotational movement and drives the printing wire 2 is rotatably supported via a rotating shaft 4 by a bearing (not shown), and is attached to a core 5 around which an electromagnetic coil 1 is wound. Plungers 6 are provided at opposing positions. The printing wire 2, which is fixed to the tip of the drive lever 3, is guided into position by a wire guide 7.8. Return spring 9 is spring seat 1
0 and the drive lever 3 in a compressed state, and plays the role of positioning the drive lever 3 at the standby position by pressing the drive lever 3 against the lever stopper 11 side. Further, the horse movement lever 3 and the return spring 9 are fixed to each other by brazing, welding, gluing, or the like at the engagement position. The printing operation will be explained below. When attempting to print, the coil 1 is energized to generate a magnetic flux that circulates around the core 5, yoke 12, and plunger 6.
, the drive lever 3 is rotated around the rotating shaft 4 by the attraction force between the cores 5. At this time, the printing wire 2 is moved to the wire guide 7 by a displacement amplified by the displacement of the plunger 6 at the ratio of (distance between the printing wire 2 and the rotation shaft 4)/(distance between the plunger 6 and the rotation shaft 4) according to the principle of leverage. The printing paper 14 moves forward while being guided by the ink ribbon 8 and hits the printing paper 14 against the platen 15 via the ink ribbon 13 to perform impact printing.

この過程で復帰バネ９は、待機状態より更に圧縮されひ
ずみエネルギーをたくわえる。印字を終了すると電磁コ
イル１への通電を停止することにより、プランジャ６と
コア５の間の吸引力を消し、復帰バネ９にたくわえられ
たひずみエネルギーによる力で待機状態へ復帰し１サイ
クル終了する。In this process, the return spring 9 is further compressed than in the standby state and stores strain energy. When printing is completed, the power supply to the electromagnetic coil 1 is stopped, thereby eliminating the attraction force between the plunger 6 and the core 5, and the return spring 9 returns to the standby state by the force of the strain energy stored in the return spring 9, completing one cycle. .

しかし、第１図に示す本発明のように印字レバー３と復
帰バネ９が係合位置で固着されている場合は、復帰バネ
９と駆動レバー３との衝突は、起こらないため、駆動レ
バー折れや復帰バネ切れは発生せず寿命の長いインパク
トドツトヘッドを得ることができる。However, if the printing lever 3 and the return spring 9 are fixed at the engaged position as in the present invention shown in FIG. It is possible to obtain an impact dot head with a long life without causing breakage or breakage of the return spring.

［発明の効果］ 本発明を実施することにより、駆動レバー及び復帰バネ
を係合位置において固着しているため特定の駆動周波数
で復帰バネが共振しサージングを起こした場合でも印字
レバーと復帰バネの衝突現象が起きず、駆動レバー折れ
や復帰バネ切れが発生しないためインパクトドツトヘッ
ドの寿命を伸ばすという効果がある。[Effects of the Invention] By carrying out the present invention, the drive lever and the return spring are fixed in the engaged position, so even if the return spring resonates at a specific drive frequency and causes surging, the print lever and return spring will remain connected to each other. This has the effect of extending the life of the impact dot head because no collision occurs, and no breakage of the drive lever or breakage of the return spring occurs.

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

第１図は、本発明の実施例を示す断面図。第２図は、駆
動レバーと復帰バネが固着されていない従来例を示す駆
動部拡大図。 １・・・電磁コイル、２・・・印字ワイヤ、３・・・１
駆動レバー　４・・・回転軸５・・・コア、６・・・プ
ランジャ ７・・・ワイヤガイド、８・・・ワイヤガイド９・・・
復帰バネ、１０・・・バネ座 １１・・・ストッパ、　１２・・・ヨーク１３・・・イ
ンクリボン、１４・・・印字紙１５・・・プラテンFIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is an enlarged view of the drive section showing a conventional example in which the drive lever and return spring are not fixed. 1... Electromagnetic coil, 2... Printing wire, 3... 1
Drive lever 4... Rotating shaft 5... Core, 6... Plunger 7... Wire guide, 8... Wire guide 9...
Return spring, 10... Spring seat 11... Stopper, 12... Yoke 13... Ink ribbon, 14... Print paper 15... Platen

Claims (1)

【特許請求の範囲】[Claims] 複数の電磁石により印字ワイヤを選択的に駆動して衝撃
印字する形式のインパクトドットヘッドにおいて、前記
印字ワイヤを駆動するレバー及び該レバーを待機位置に
押し戻すバネを備え、前記レバーと、前記バネを固着し
たことを特徴とするインパクトドットヘッド。An impact dot head that performs impact printing by selectively driving a printing wire using a plurality of electromagnets, comprising a lever for driving the printing wire and a spring that pushes the lever back to a standby position, and fixing the lever and the spring. The impact dot head is characterized by:
JP17052090A 1990-06-28 1990-06-28 impact dot head Pending JPH0459256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17052090A JPH0459256A (en) 1990-06-28 1990-06-28 impact dot head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17052090A JPH0459256A (en) 1990-06-28 1990-06-28 impact dot head

Publications (1)

Publication Number Publication Date
JPH0459256A true JPH0459256A (en) 1992-02-26

Family

ID=15906466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17052090A Pending JPH0459256A (en) 1990-06-28 1990-06-28 impact dot head

Country Status (1)

Country Link
JP (1) JPH0459256A (en)

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