JPH0262245A - Printing head for wire dot printer - Google Patents

Printing head for wire dot printer

Info

Publication number
JPH0262245A
JPH0262245A JP21395688A JP21395688A JPH0262245A JP H0262245 A JPH0262245 A JP H0262245A JP 21395688 A JP21395688 A JP 21395688A JP 21395688 A JP21395688 A JP 21395688A JP H0262245 A JPH0262245 A JP H0262245A
Authority
JP
Japan
Prior art keywords
armature
ring
leaf spring
wire dot
print 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
JP21395688A
Other languages
Japanese (ja)
Inventor
Masayoshi Komori
子守 正義
Jun Uozumi
魚住 潤
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP21395688A priority Critical patent/JPH0262245A/en
Publication of JPH0262245A publication Critical patent/JPH0262245A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22Typewriters 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
    • B41J2/23Typewriters 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
    • B41J2/235Print head assemblies

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE:To assemble a printing head, which has excellent positional accuracy, in which an armature need not be inserted into each jig and cost of which is reduced, by integrally forming the armature and a ring, fixing a leaf spring and the armature and detaching the armature and the ring. CONSTITUTION:An armature 2 and a ring 4 are shaped integrally, and fixed to a leaf spring 3 through laser welding, etc., and a section A is cut through laser welding, etc. after fixation and the armature 2 and the ring 4 are detached. Accordingly, a wire dot printer printing head, which has excellent positional accuracy and cost of which is reduced, is assembled without using a positioning jig having a complicate shape.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ワイヤドツトプリンタに使用する印字ヘッド
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to printheads for use in wire dot printers.

従来の技術 近年印字ヘッドの高速化が進み、例えば24ドツト印字
ヘッドでは、漢字印字で毎秒60−100字の物まで製
品化されている(例えば、電電公社研究実用化報告第2
8巻第2号、細密ワイヤドツト式漢字プリンタ参照)。
Conventional technology Print heads have become faster in recent years, and for example, 24-dot print heads have been commercialized that can print kanji characters at 60 to 100 characters per second.
(Refer to Volume 8, No. 2, Fine Wire Dot Type Kanji Printer).

以下図面を3照しながら、上述したような従来のワイヤ
ドツトプリンタ印字ヘッドに付いて説明する。
The conventional wire dot printer print head as described above will be explained below with reference to the drawings.

従来、この種の印字ヘッドは、第3図及び第4図に示す
ような構成であった。第3図(a)は、従来の印字ヘッ
ドの側断面図であり、第4図(a) 、 (b) 。
Conventionally, this type of print head has had a configuration as shown in FIGS. 3 and 4. FIG. 3(a) is a side sectional view of a conventional print head, and FIGS. 4(a) and 4(b).

(C)は同印字ヘッド可動体の詳細平面図、詳細側断面
図及び同底面図である。
(C) is a detailed plan view, a detailed side sectional view, and a bottom view of the print head movable body.

同図において、1はアマチュア2の先端に一端を固着さ
れた印字針であり、印字針1の先端は筐体7で保持され
た軸受け8の案内孔8&に案内されている。3はアマチ
ュア2の末端に固着された板ばねであシ、この板ばね3
の他端はリング4上に設けられた第2リング6を介して
ねじ13にて固定されている。9は永久磁石、10はコ
ア側壁、11はコアポールであシ、このコアポー/v1
1の外周には消磁コイル12が配置されている。アマチ
ュア2及び板ばね3は、複数個リング状に配置され、コ
アポー)vllは、アマチュア2に対向するように配置
されている。ヨーク6は第3図(b)に示すように適当
なギャップを設けてアマチュア2の側面を抱き込むよう
に複数の突起が設けられている。
In the figure, reference numeral 1 denotes a printing needle whose one end is fixed to the tip of an armature 2, and the tip of the printing needle 1 is guided into a guide hole 8& of a bearing 8 held by a housing 7. 3 is a leaf spring fixed to the end of armature 2, and this leaf spring 3
The other end is fixed with a screw 13 via a second ring 6 provided on the ring 4. 9 is a permanent magnet, 10 is a core side wall, 11 is a core pole, and this core pole/v1
A degaussing coil 12 is arranged on the outer periphery of the magnet 1 . A plurality of armatures 2 and leaf springs 3 are arranged in a ring shape, and the core spring 2 is arranged to face the armature 2. As shown in FIG. 3(b), the yoke 6 is provided with a plurality of protrusions so as to embrace the sides of the armature 2 with appropriate gaps.

以上のように構成されたワイヤドツトプリンタ印字ヘッ
ドについて、以下その動作に付いて説明する。上記の構
成において、永久磁石9の磁束はコア側壁1o及びコア
ボール11を介してアマチュア2に導かれ、さらにアマ
チュア2の側面よりヨニク6及び第2リング6、リング
4を介して永久磁石9に帰還される。従ってアマチュア
2は、永久磁石9の磁束により、コアポーA/11の下
方に吸引され、板ばね3はたわんだ状態となっている。
The operation of the wire dot printer print head configured as described above will be explained below. In the above configuration, the magnetic flux of the permanent magnet 9 is guided to the armature 2 via the core side wall 1o and the core ball 11, and then to the permanent magnet 9 from the side of the armature 2 via the magnet 6, the second ring 6, and the ring 4. will be returned. Therefore, the armature 2 is attracted below the core port A/11 by the magnetic flux of the permanent magnet 9, and the leaf spring 3 is in a flexed state.

次に、消磁コイル12に電流を流すと、永久磁石9の磁
束が打ち消され、アマチュア2の吸引力が減少するため
、板ばね3の復元力によりアマチュア2は上方に駆動さ
れる。このとき印字針1は軸受け8より突出し、インク
リボン(図示せず)を衝撃し、点状の印字を行う。更に
消磁コイ/L/12の電流を止めると、上記のようにア
マチュア2は永久磁石9の磁束によシ再び吸引されるた
め、印字針1は元の位置に復帰する。
Next, when a current is applied to the degaussing coil 12, the magnetic flux of the permanent magnet 9 is canceled and the attractive force of the armature 2 is reduced, so that the armature 2 is driven upward by the restoring force of the leaf spring 3. At this time, the printing needle 1 protrudes from the bearing 8 and impacts an ink ribbon (not shown) to print dots. Furthermore, when the current to the demagnetizing coil/L/12 is stopped, the armature 2 is attracted again by the magnetic flux of the permanent magnet 9 as described above, so that the printing needle 1 returns to its original position.

以上の動作を1vイクルとして印字ヘッドを左右に走査
しながら、印字針1を適時動作させることにより、ドツ
トマトリクス状の印字が行われる。
Dot matrix printing is performed by operating the printing stylus 1 at appropriate times while scanning the print head left and right while performing the above operations in one cycle.

発明が解決しようとする課題 このように構成された従来のワイヤドツトプリンタ印字
ヘッドの課題について第6図を参照して説明する。第6
図は印字ヘッドアマチュア機構の組立状態を示す分解斜
視図である。同図においてアマチュア2は、位置決め治
具14のヨークとの間に適当なスキマが保てるような間
隔に放射状に加工された位置決め溝14&に挿入固定さ
れており、板ばね3は固定台15の位置決めピン15&
に挿入され固定用リング16によってアマチュア2と密
着されている。その後、レーザー溶接あるいはスポット
溶接等の溶接によシ固着される。
Problems to be Solved by the Invention The problems of the conventional wire dot printer print head configured as described above will be explained with reference to FIG. 6th
The figure is an exploded perspective view showing the assembled state of the print head armature mechanism. In the same figure, the armature 2 is inserted and fixed into a positioning groove 14 & which is radially machined at an interval that maintains an appropriate clearance between the armature 2 and the yoke of the positioning jig 14, and the leaf spring 3 is used to position the fixed base 15. Pin 15 &
It is inserted into the armature 2 and is tightly attached to the armature 2 by a fixing ring 16. After that, it is fixed by welding such as laser welding or spot welding.

しかしながら、このような組立方法では、アマチュア2
と位置決め溝14aとのガタが大きいと板ばね3との位
置精度が悪くなシ、アマチュア2とヨーク6との間に適
当なスキマが保てなくなシアマチュア2が動作する時に
ヨーク6の側壁に当り抵抗となり印字品質の低下につな
がっていた。
However, with this assembly method, amateurs
If there is a large play between the armature 2 and the positioning groove 14a, the positioning accuracy with the leaf spring 3 will be poor, and an appropriate clearance will not be maintained between the armature 2 and the yoke 6, causing damage to the side wall of the yoke 6 when the armature 2 moves. This caused resistance, leading to a decline in print quality.

逆に位置決め溝14!Lとのガタが小さいと位置精度は
良いが挿入が困難になっていた。また、アマチュア機構
を大量に必要とした場合、位置決め治具14が大量に必
要となるばかりでなく、アマチュア2を位置決め治具1
4に挿入するために非常に多くの時間が必要となり、印
字ヘッド全体のコストアップとなっていた。
On the contrary, positioning groove 14! If the play between L and L is small, the positioning accuracy is good, but insertion becomes difficult. Furthermore, if a large number of armature mechanisms are required, not only will a large number of positioning jigs 14 be required, but also the armature 2 and the positioning jig 1 will be required.
It takes a very long time to insert the print head into the print head 4, which increases the cost of the entire print head.

本発明はこのような問題を解決するもので、複雑な形状
の位置決め治具を使用せずに位置精度がよく、かつ、ア
マチュアを一つ一つ治具に挿入する必要のないコストの
低減をはかった印字ヘッドの組立てを可能にすることを
目的とするものである。
The present invention solves these problems by achieving high positioning accuracy without using a positioning jig with a complicated shape, and reducing costs by eliminating the need to insert each armature into the jig one by one. The purpose of this is to enable assembly of the printed print head.

課題を解決するための手段 この課題を解決するために本発明は、アマチュアとリン
グを一体的に形成し、板ばねとアマチュアの固着を行っ
た後にアマチュアとリングを切り放す構成としたもので
ある。
Means for Solving the Problems In order to solve this problem, the present invention has a structure in which the armature and the ring are integrally formed, and the armature and the ring are separated after the leaf spring and the armature are fixed. .

作用 この構成により、複雑な形状の位置決め治具を使用せず
に位置精度がよく、かつ、アマチュアを一つ一つ治具に
挿入する必要のないコストの低減を図ったワイヤドツト
プリンタ印字ヘッドの組立を実現するものである。
Function: With this configuration, it is possible to assemble a wire dot printer print head that has good positioning accuracy without using a positioning jig with a complicated shape, and reduces costs because it is not necessary to insert each armature into the jig one by one. This is to realize the following.

実施例 以下本発明の一実施例について、第1図、第2図に基づ
いて説明する。第1図において、従来例と異なるところ
は、アマチュアとリングが一体となった構造にあり、他
の説明は省略する。
EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In FIG. 1, the difference from the conventional example lies in the structure in which the armature and the ring are integrated, and other explanations will be omitted.

第1図(8−)は本発明の一実施例によるアマチュア2
とリング4が一体に形成されたものと板ばね3とが固着
された可動体の平面図であり、第1図中)は同断面図で
あり、第1図(0)は同底面図である。
FIG. 1 (8-) shows an amateur 2 according to an embodiment of the present invention.
1 is a plan view of a movable body in which a ring 4 is integrally formed with a plate spring 3, and FIG. 1(0) is a sectional view of the same, and FIG. be.

第1図(a)〜(C)において、アマチュア2とリング
4は一体に形成され、板ばね3に例えばレーザー溶接等
により固着されており、固着後レーザー溶接等によシム
部を切断しアマチュア2とリング4を切り離す。
In FIGS. 1(a) to (C), the armature 2 and ring 4 are integrally formed and fixed to the leaf spring 3 by, for example, laser welding. After they are fixed, the shim portion is cut by laser welding or the like, Separate 2 and ring 4.

第2図は、本実施例による組立て状態を示し、アマチュ
ア2と板ばね3の位置決めは固定台15の位置決め用ピ
ン151Lで位置を決めている。
FIG. 2 shows an assembled state according to this embodiment, in which the armature 2 and the leaf spring 3 are positioned using the positioning pin 151L of the fixed base 15.

発明の効果 以上のように本発明によれば、複雑な形状の位置決め治
具を使用せずに位置精度がよくコスト低減を図ったワイ
ヤドツトプリンタ印字ヘッドの組立が可能となる。
Effects of the Invention As described above, according to the present invention, it is possible to assemble a wire dot printer print head with high positional accuracy and cost reduction without using a positioning jig with a complicated shape.

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

第1図(a)、 rり> 、 (C)は本発明の一実施
例によるワイヤドツトプリンタ印字ヘッドの可動体の平
面図。 断面図及び底面図、第2図は同可動体の組立状態を示す
分解斜視図、第3図(2L)、(b)は一般的なワイヤ
ドツトプリンタ印字ヘッドの側断面図及び可動体部分の
断面図、第4図(a) 、 (b+ 、 (C)は従来
の印字ヘッドの可動体の平面図、断面図及び底面図、第
5図は従来の印字ヘッドの可動体の組立状態を示す分解
斜視図である。 1・・・・・・印字針、2・・・・・・アマチュア、3
・・・・・・板ばね、4・・・・・・リング、ム・・・
・・・切断部。 代理人の氏名 弁理士 粟 野 重 孝 ほか1名図 (a) 印〒計 アマ千ニア 板ばね ノソーノ 項■  2  リ  ン  ク ヨーク 8〜 輪受け 9− 永ス磁石 10−コア11F1里 コアメール 12 ・−一  5内  6昧 コ  イ  lし+3
−It定ねじ
FIGS. 1A, 1C, and 1C are plan views of a movable body of a wire dot printer print head according to an embodiment of the present invention. A cross-sectional view and a bottom view, FIG. 2 is an exploded perspective view showing the assembled state of the movable body, and FIGS. 3 (2L) and (b) are a side sectional view of a general wire dot printer print head and a cross-section of the movable body part. 4(a), (b+, and (C) are plan views, sectional views, and bottom views of the movable body of the conventional print head, and FIG. 5 is an exploded view showing the assembled state of the movable body of the conventional print head. It is a perspective view. 1... Printing needle, 2... Amateur, 3
...Plate spring, 4...Ring, M...
...cut section. Name of agent: Patent attorney Shigetaka Awano and 1 other person Diagram (a) Seal: Total amateur leaf spring number ■ 2 Links Yoke 8 - Wheel support 9 - Elongated magnet 10 - Core 11 F1 Ri Core mail 12 ・-1 5 within 6 koi 1+3
-It set screw

Claims (1)

【特許請求の範囲】[Claims] アマチュアと、このアマチュアの先端部に固着された印
字針と、上記アマチュアの作動体の一端に固着された板
ばねと、この板ばねの一端を固定するリングよりなり、
前記アマチュアと前記リングを一体的に形成し、前記板
ばねとアマチュアの固着を行った後にこのアマチュアと
リングを切り放して構成したワイヤドットプリンタ印字
ヘッド。
Consisting of an armature, a printing needle fixed to the tip of the armature, a leaf spring fixed to one end of the operating body of the armature, and a ring fixing one end of the leaf spring,
The wire dot printer print head is constructed by integrally forming the armature and the ring, and cutting off the armature and the ring after fixing the armature to the leaf spring.
JP21395688A 1988-08-29 1988-08-29 Printing head for wire dot printer Pending JPH0262245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21395688A JPH0262245A (en) 1988-08-29 1988-08-29 Printing head for wire dot printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21395688A JPH0262245A (en) 1988-08-29 1988-08-29 Printing head for wire dot printer

Publications (1)

Publication Number Publication Date
JPH0262245A true JPH0262245A (en) 1990-03-02

Family

ID=16647840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21395688A Pending JPH0262245A (en) 1988-08-29 1988-08-29 Printing head for wire dot printer

Country Status (1)

Country Link
JP (1) JPH0262245A (en)

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