JPH01198363A - Wire dot head - Google Patents
Wire dot headInfo
- Publication number
- JPH01198363A JPH01198363A JP2440088A JP2440088A JPH01198363A JP H01198363 A JPH01198363 A JP H01198363A JP 2440088 A JP2440088 A JP 2440088A JP 2440088 A JP2440088 A JP 2440088A JP H01198363 A JPH01198363 A JP H01198363A
- Authority
- JP
- Japan
- Prior art keywords
- armature
- wire
- printing
- printing wire
- protruding part
- 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
Links
- 238000007639 printing Methods 0.000 claims abstract description 36
- 238000005452 bending Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
- B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
- B41J2/235—Print head assemblies
- B41J2/25—Print wires
- B41J2/26—Connection of print wire and actuator
Landscapes
- Impact Printers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はインバク１〜プリンタのワイヤドラ）・ヘッド
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire drive head for printers.
従来この種のワイヤドツトヘッドは、第３図、第４図に
示すように、印字ワイヤ１とアー・マチュア２とが係合
する端点Ａ点で、はぼ直角に係合していた。Conventionally, in this type of wire dot head, as shown in FIGS. 3 and 4, the printing wire 1 and the armature 2 were engaged at a nearly right angle at the end point A where they engaged.
ところが、このような構成ではアーマチュア２が駆動さ
れて回転運動をする際に、ワイヤ１のアーマチュア２と
の係合部Ａ点に大きな曲げ応力が作用し、Ａ点が切欠き
形状をしているため応力集中状態となり、Ａ点で印字ワ
イヤ１が破断してしまう問題点があった。However, in such a configuration, when the armature 2 is driven and rotates, a large bending stress is applied to the point A of the engagement portion of the wire 1 with the armature 2, and the point A has a notch shape. Therefore, there was a problem that stress concentration occurred and the printing wire 1 broke at point A.
本発明は、前記問題点を解決するためになされたもので
あり、印字ワイヤのアーマチュアとの係合部の耐久性を
向上させ、信頼性の高いワイヤドツトヘッドを提供する
ものである。The present invention has been made to solve the above-mentioned problems, and provides a highly reliable wire dot head by improving the durability of the portion of the printing wire that engages with the armature.
本発明は、印字ワイヤと係合するアーマチュアの先端部
が三角形状に突出し、印字ワイヤと固着されていること
を特徴とする。The present invention is characterized in that the tip of the armature that engages with the printing wire protrudes in a triangular shape and is fixed to the printing wire.
以下に本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図は本発明の一実施例を示すワイヤドツトヘッドの
部分側断面図で、アーマチュア２の先端には印字ワイヤ
１が固着され、印字ワイヤ１はワイヤカイト１１により
保持されている。アーマチュア２の他端には板バネ７が
固定され、板バネ６はバネ押工板８、サイドヨーク６に
挟持されている。アーマチュア１の下方にはベースコア
３のコア部３ａが対向し、コア部３ａの周囲にはマグネ
ットコイル１０が巻回されている。ベースコア３のベー
ス部３ｂとヨーク板５との間には永久磁石４が挟装され
ている。FIG. 1 is a partial side sectional view of a wire dot head showing an embodiment of the present invention. A printing wire 1 is fixed to the tip of an armature 2, and the printing wire 1 is held by a wire kite 11. A leaf spring 7 is fixed to the other end of the armature 2, and the leaf spring 6 is held between a spring press plate 8 and a side yoke 6. A core portion 3a of a base core 3 faces below the armature 1, and a magnet coil 10 is wound around the core portion 3a. A permanent magnet 4 is sandwiched between the base portion 3b of the base core 3 and the yoke plate 5.
アーマチュア２には第２図に示すように、印字ワイヤ１
との接合部に三角形状の突出部２ａを設けであるので、
印字ワイヤ１とアーマチュア２の突出部２ａとはなめら
かに接合されている。The armature 2 has a printing wire 1 as shown in FIG.
Since the triangular protrusion 2a is provided at the joint with the
The printing wire 1 and the protrusion 2a of the armature 2 are smoothly joined.
次に、第１図によって動作を説明する。待機状態では、
永久磁石４から発生した磁束かヨーク板５、サイドヨー
ク６、アーマチュア１、ベースコア３を通っているため
アーマチュア２は板バネ６を撓めてベースコア３のコア
部３ａ端面に吸引保持されている。ここでマグネットコ
イル１０に永久磁石４の磁束を打ち消す方向に電流を流
すと、アーマチュア１は永久磁石４の吸引力から解放さ
れて板バネ７に蓄積されていた歪エネルギにより矢印Ｂ
方向へ回転運動を行う。それに伴なって印字ツイヤ１が
突出して図示していない印字媒体に衝突しドツトを形成
する。衝突後、衝突時の反発力と永久磁石４の吸引力に
よりアーマチュア２はベースコア３のコア部３ａに吸引
され一印字行程を終了する。Next, the operation will be explained with reference to FIG. In standby mode,
Since the magnetic flux generated from the permanent magnet 4 passes through the yoke plate 5, side yoke 6, armature 1, and base core 3, the armature 2 is attracted and held by the end face of the core portion 3a of the base core 3 by bending the leaf spring 6. There is. When a current is applied to the magnet coil 10 in a direction that cancels out the magnetic flux of the permanent magnet 4, the armature 1 is released from the attractive force of the permanent magnet 4 and is moved by the strain energy stored in the leaf spring 7 as indicated by the arrow
Perform rotational movement in the direction. As a result, the printing wheel 1 protrudes and collides with a printing medium (not shown) to form a dot. After the collision, the armature 2 is attracted to the core portion 3a of the base core 3 due to the repulsive force at the time of the collision and the attractive force of the permanent magnet 4, and one printing process is completed.
上述した印字行程の中でアーマチュア２が板バネ６によ
り駆動される際、アーマチュア２の三角形突出部２ａの
先端Ａ点で、印字ワイヤ１は大きな曲げ応力を受けるか
、印字ワイヤ１と三角形突出部２ａの先端はなめらかに
連結されているので、印字ワイヤ１のＡ点で応力集中が
発生することはない。従って印字ワイヤ１のＡ点での耐
久性は飛躍的に向上しワイヤドツトヘッドの信頼性を著
しく高めることができる。When the armature 2 is driven by the leaf spring 6 during the printing process described above, the printing wire 1 is subjected to a large bending stress at the tip A point of the triangular protrusion 2a of the armature 2, or the printing wire 1 and the triangular protrusion are Since the tips of the printing wires 2a are connected smoothly, no stress concentration occurs at the point A of the printing wire 1. Therefore, the durability of the printing wire 1 at point A can be dramatically improved, and the reliability of the wire dot head can be significantly improved.
本発明は、実施例としてスプリングチャージ型のワイヤ
ドツトヘッドについて説明してきたが、直接吸引型のワ
イヤドツトヘッドに応用しても本願と同様な効果が得ら
れる。Although the present invention has been described with reference to a spring charge type wire dot head as an example, the same effects as the present invention can be obtained even when applied to a direct suction type wire dot head.
このように本願によれば、アーマチュアの印字ワイヤと
係合する先端部に三角形状の突出部を設けた構成とした
ので、印字ワイヤ駆動時に印字ワイヤとアーマチュアと
の接合部に応力集中が発生ぜず、印字ワイヤの耐久性か
向上し信頼性の高いワイヤドツトヘッドを提供すること
ができる。According to the present application, since the triangular protrusion is provided at the tip of the armature that engages with the printing wire, stress concentration will not occur at the joint between the printing wire and the armature when the printing wire is driven. First, the durability of the printing wire is improved, and a highly reliable wire dot head can be provided.
第１図は本発明の実施例を示すワイヤドツトヘッドの部
分側断面図。
第２図は本発明の実施例を示ずアーマチュア部の拡大図
。
第３図、第４図は従来の実施例を示すアーマチュア部の
拡大図。
１・・・印字ワイヤ
２・・・アーマチュア
３・・・ベースコア
４・・・永久磁石
５・・・ヨーク板
６・・・サイドヨーク
７・・・板バネ
８・・・バネ押工板
９・・・ノーズ
１０・・・マグネットコイル
１１・・・ワイヤカイト
以上
第３図FIG. 1 is a partial side sectional view of a wire dot head showing an embodiment of the present invention. FIG. 2 is an enlarged view of the armature portion, not showing an embodiment of the present invention. FIG. 3 and FIG. 4 are enlarged views of the armature section showing a conventional embodiment. 1... Printing wire 2... Armature 3... Base core 4... Permanent magnet 5... Yoke plate 6... Side yoke 7... Leaf spring 8... Spring pressing plate 9 ... Nose 10 ... Magnet coil 11 ... Wire kite and above Figure 3
Claims (1)
トヘッドに於いて、前記印字ワイヤと係合する前記アー
マチュアの先端部が三角形状に突出し、前記印字ワイヤ
と固着されたことを特徴とするワイヤドットヘッド。A wire dot head having a printing wire fixed to the tip of an armature, characterized in that the tip of the armature that engages with the printing wire protrudes in a triangular shape and is fixed to the printing wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2440088A JPH01198363A (en) | 1988-02-04 | 1988-02-04 | Wire dot head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2440088A JPH01198363A (en) | 1988-02-04 | 1988-02-04 | Wire dot head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01198363A true JPH01198363A (en) | 1989-08-09 |
Family
ID=12137112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2440088A Pending JPH01198363A (en) | 1988-02-04 | 1988-02-04 | Wire dot head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01198363A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01119343U (en) * | 1988-02-04 | 1989-08-11 |
-
1988
- 1988-02-04 JP JP2440088A patent/JPH01198363A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01119343U (en) * | 1988-02-04 | 1989-08-11 |
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