JPS62207654A - Wire dot recoding head - Google Patents

Abstract

PURPOSE:To provide allowance to the parts dimensional accuracy of a head, by a method wherein the intermediate part of a leaf spring is supported by a bearing and the rear end part thereof is engaged and the leaf spring is revolved around the bearing part of the aforementioned leaf spring in the side of the leading end thereof by the bending of the leaf spring in the side of the rear end part thereof from the bearing part. CONSTITUTION:An armature 9 is attracted to a core 10 by the magnetic force of the magnetic field generated by a permanent magnet 2 and the A-part side of a leaf spring 5 is revolved around a pin 15 to displace the leaf spring 5. In this case, because the A-part is not bent and a B-part revolving originally is engaged because of the difference of a width, the leaf spring 5 is bent by deflection DELTAB'. At the time of recording, a coil 11 is excited to negate the magnetic field of the permanent magnet 2 and the armature 9 is released from the core 10 and the A-part is revolved by the elastic force for eliminating the bending of the B-part of the lead spring 5 and a wire 8 is displaced to perform the recording of a dot. At this time of recording, the gap dimension between the armature 9 and the core 10 in such a state that he deflection of the leaf spring 5 is 0 comes to DELTAA. Herein, the deflection DELTAB' is larger than the gap dimension DELTAA and can be extremely largely taken as compared. with conventional one.

Description

【発明の詳細な説明】 ［ＪＩＩ：梁上の利用分野］ 本発明は記録媒体打撃用ワイヤを先端部に結合した板バ
ネを撓ませた後に解放することにより前記ワイヤを駆動
するワイヤドツト記録ヘッドに関するものである。Detailed Description of the Invention [JII: Field of Application on Beams] The present invention relates to a wire dot recording head that drives a recording medium striking wire by deflecting and then releasing a leaf spring connected to the tip end of the recording medium striking wire. It is something.

［従来の技術］ 従来のこの種のワイヤドツト記録ヘッドは第６図に示す
ように構成されている。[Prior Art] A conventional wire dot recording head of this type is constructed as shown in FIG.

符号２で示すものは永久磁石で環状かつ板状に形成され
、軸方向に着磁されており、これと同じ外径で円板状に
形成された下ヨークｌの外局縁部上に重ねて設けられて
いる。永久磁石２上にはこれと同径の環状に形成された
中ヨーク３が重ねて設けられており、この中ヨーク３上
にはスベーナ４と円板状で放射状の可動部を有した板バ
ネ５を挟んで環状の上ヨーク６が設けられ、さらに−上
ヨーク６上には中央部が中空のガイド部７ａを有した先
端ガイド７が重ねて設けられている。The one indicated by the reference numeral 2 is a permanent magnet that is formed into an annular and plate shape and is magnetized in the axial direction. It is provided. A ring-shaped middle yoke 3 having the same diameter as the permanent magnet 2 is stacked on top of the permanent magnet 2. On this middle yoke 3, there is a subena 4 and a plate spring having a disk shape and a radial movable part. An annular upper yoke 6 is provided with the upper yoke 5 in between, and a distal end guide 7 having a guide portion 7a with a hollow center portion is superimposed on the upper yoke 6.

先端ガイド７は打撃用の複数本のワイヤ８をガイドする
もので、各ワイヤ８はガイド部７ａを挿通して架設され
、各ワイヤ８の先端はガイド部７ａの先端に形成された
開ロアｂに臨まされ、後端は板バネ５の可動部のそれぞ
れの上に弾性的に片持ち支持されたアーマチュア９の各
先端に固定されている。The tip guide 7 guides a plurality of wires 8 for striking, each wire 8 is inserted through the guide portion 7a, and the tip of each wire 8 is connected to an open lower b formed at the tip of the guide portion 7a. The rear end is fixed to each tip of an armature 9 which is elastically cantilevered on each of the movable parts of the leaf spring 5.

一方符号ｌＯで示すものはアーマチュア９を駆動する電
磁石のコアで１円柱状に形成され、コイル１１を巻装さ
れており、アーマチュア９と同数設けられる。そして放
射状に配置された各板バネ５の可動部に対向し、第７図
に示すように永久磁石２の内側に等間隔で円形に並んで
下ヨークｌ上に設けられている。On the other hand, the core indicated by the symbol 1O is the core of an electromagnet that drives the armature 9, and is formed into a cylindrical shape, and is wound with a coil 11, which is provided in the same number as the armature 9. Opposed to the movable parts of the radially arranged leaf springs 5, they are arranged on the lower yoke l inside the permanent magnet 2 at equal intervals in a circle, as shown in FIG.

そしてそれぞれ磁性体からなる上記の永久磁石２、中ヨ
ーク３．板バネ５．上ヨーク６、アーマチュア９．コア
ｌＯ及び下ヨークｌにより磁路が構成される。The above-mentioned permanent magnet 2, middle yoke 3, each made of a magnetic material. Leaf spring 5. Upper yoke 6, armature 9. A magnetic path is configured by the core lO and the lower yoke l.

以上のような構成において、非記録時にはコイル１１へ
の通電が遮断されており、永久磁石２によって磁化され
た各コア１０に各板バネ５の可動部がアーマチュア９と
ともに吸引され撓ませられ、吸着されており、各ワイヤ
８の先端は先端ガイド７のガイド部７ａの先端と同じ位
置にある。In the above configuration, when not recording, the power to the coil 11 is cut off, and the movable part of each leaf spring 5 is attracted to each core 10 magnetized by the permanent magnet 2 together with the armature 9, and is deflected. The tip of each wire 8 is located at the same position as the tip of the guide portion 7a of the tip guide 7.

この場合上記の磁路においては、第８図に実線と矢印で
示す経路と向きで永久磁石２によって発生する磁束１２
が泣れている。In this case, in the magnetic path described above, the magnetic flux 12 generated by the permanent magnet 2 follows the path and direction shown by the solid line and arrow in FIG.
is crying.

一方、記録時には選択されたコイル１１が通電され、励
磁されることにより、第８図に点線と矢印で示す経路と
向きで流れる磁束１３が発生し、磁束１２が打ち消され
る結果、コア１０が吸引力を失なう。On the other hand, during recording, the selected coil 11 is energized and excited, thereby generating magnetic flux 13 that flows along the path and direction shown by dotted lines and arrows in FIG. lose power.

これにより板バネ５の可動部が解放され、その弾性力で
アーマチュア９が板バネ５の可動部とともに図中上方に
変位し、ワイヤ８を同方向に変位させ、ワイヤ８がガイ
ド部７ａの先端から突き出し、不図示のインクリボンを
介して同様に不図示の記録媒体を打撃してドツト記録が
なされる。As a result, the movable part of the leaf spring 5 is released, and the armature 9 is displaced upward in the figure together with the movable part of the leaf spring 5 due to its elastic force, displacing the wire 8 in the same direction, and the wire 8 moves to the tip of the guide part 7a. The dot is ejected from the dot and struck a recording medium (not shown) via an ink ribbon (not shown) to record dots.

［発明が解決しようとする問題点］ ところが上述のような記録へ−Ｉドの構造で、板バネ５
の各可動部のバネ力を均一にして安定した記録動作を行
なうためには、板バネ・５の形状寸法の精度と、アーマ
チュア９．コア１０間のギャップ寸法の精度を高く保た
ねばならない。[Problems to be solved by the invention] However, in the above-mentioned recording structure, the leaf spring 5
In order to make the spring force of each movable part uniform and perform stable recording operation, the accuracy of the shape and dimensions of the leaf spring 5 and the armature 9 are essential. The gap size between the cores 10 must be kept highly accurate.

これは上述の構造では記録動作時にバネ力を発生するた
めの板バネ５の可動部のたわみ量が上記ギャップ寸法よ
りも小さくなり、ごく小さな値となってしまうからであ
る。即ち第９図に示すようにアーマチュア９．コア１０
間のギャプ寸法をΔＡとし、板バネ５の固定端部からコ
アｌＯとの接触点までの長さをノＡとし、板バネ５の撓
む部分の有効長（板バネ５の固定端部からアーマチュア
９の図中右端部までの長さ）をＪ２Ｂとすれば、バネ力
を発生させる板バネ５の吸着時のたわみ量ΔＢはおおよ
そ次の式で求められる。This is because, in the above-described structure, the amount of deflection of the movable portion of the leaf spring 5 for generating spring force during the recording operation becomes smaller than the above-mentioned gap dimension, and becomes a very small value. That is, as shown in FIG. 9, the armature 9. core 10
The gap dimension between them is ΔA, the length from the fixed end of the leaf spring 5 to the point of contact with the core IO is ΔA, and the effective length of the bending part of the leaf spring 5 (from the fixed end of the leaf spring 5 to the point of contact with the core IO is ΔA). If the length of the armature 9 to the right end in the figure is J2B, then the amount of deflection ΔB of the leaf spring 5 that generates the spring force when it is attracted can be approximately determined by the following equation.

この式かられかるようにたわみ量ΔＢはギャップ寸法Δ
Ａよりも小さく極めて小さな値となってしまう。As can be seen from this formula, the amount of deflection ΔB is the gap dimension Δ
It becomes an extremely small value smaller than A.

従って小さなたわみ量で限られた使用範囲のバネ力を得
るためには板バネ５の形状寸法に高精度が要求されると
ともに、ギャップ寸法ΔＡの精度も要求され、各部品の
加工において寸法公差が非常に小さくなってしまい１歩
留りが悪くなり１部品費の上昇でヘッド全体のコストア
ップになるという問題があった。Therefore, in order to obtain spring force within a limited range of use with a small amount of deflection, high precision is required in the shape and dimensions of the leaf spring 5, as well as precision in the gap dimension ΔA, and dimensional tolerances are required in the processing of each part. There was a problem in that the size of the head was extremely small, resulting in poor yield and an increase in the cost of each component, leading to an increase in the cost of the entire head.

さらに従来の構造では、第１０図に示すように１枚板の
板バネ５においてそれぞれアーマチュア９を支持した多
数の可動部５ａをごく近接して放射状に設けているので
、近接した可動部５ａどうしの間で互いの振動を遮断し
なくてはならないという問題があった。Furthermore, in the conventional structure, as shown in FIG. 10, a large number of movable parts 5a, each supporting an armature 9, are provided radially in close proximity to each other in a single plate spring 5, so that adjacent movable parts 5a do not interact with each other. There was a problem in that it was necessary to isolate each other's vibrations between the two.

［問題点を解決するための手段］ 上述した問題点を解決するため本発明によれば、記録媒
体打撃用ワイヤを先端部に結合した板バネを撓ませた後
に解放することにより前記ワイヤを駆動するワイヤドツ
ト記録ヘッドにおいて、前記板バネの中間部を軸受けす
るとともに、後端部を係止し、前記板バネの軸受は部か
ら後端部側の撓みにより板バネの先端部側が前記軸受は
部を支点として回動するようにした。[Means for Solving the Problems] In order to solve the above-mentioned problems, according to the present invention, the wire is driven by bending and then releasing a plate spring connected to the tip of the recording medium striking wire. In the wire dot recording head, the middle part of the leaf spring is supported by a bearing, and the rear end part is locked. It was made to rotate using the fulcrum as a fulcrum.

［作　用］ このような構造によれば、板バネの軸受は部から後端部
側の長さを軸受は部から先端部側の長さに比べて大きく
取れば取るほどワイヤを駆動するバネ力を得るための板
バネの後端部側のたわみ量を大きく取ることができる。[Function] According to this structure, the longer the length of the plate spring bearing from the rear end side is compared to the length from the front end side to the front end, the more the spring that drives the wire becomes The amount of deflection on the rear end side of the leaf spring for obtaining force can be increased.

そしてバネ力とたわみ量の関係において所定のバネ力の
使用範囲に対応するたわみ量のバラツキの許容範囲を広
くでき、板バネの部品精度と、板バネの動作に関連した
ヘッドの部品寸法精度に余裕を持たすことができる。In addition, in the relationship between spring force and deflection, it is possible to widen the allowable range of variation in deflection corresponding to the usage range of a predetermined spring force. You can have some leeway.

［実施例］ 以下１本発明の実施例の詳細を第１図〜第５図を参照し
て説明する。[Example] Hereinafter, details of an example of the present invention will be described with reference to FIGS. 1 to 5.

第１図は本実施例のワイヤドツト記録ヘッドに設けられ
る板バネ５．ワイヤ８及びアーマチュア９からなる可動
体１７の組み立て構造を示すものである。FIG. 1 shows a leaf spring 5 installed in the wire dot recording head of this embodiment. It shows the assembly structure of a movable body 17 consisting of a wire 8 and an armature 9.

板バネ５は従来のように１枚の円板中の可動部として多
数連続して設けられるのではなく、図示のように独立し
た単体として形成されており、中央部で屈曲したほぼＬ
字形状に形成され、先端側のＡ部の方が後端側のＢ部よ
りも幅が大きく形成されている。板バネ５の先端には記
録媒体打撃用のワイヤ８がろう付けなどで固着されてい
る。また板バネ５の先端側Ａ部の中間部には切り欠き５
ａが形成されており、この切り欠き５ａ部分には板バネ
５の厚さに対応するｆＭ　９　ａを有した直方体形状の
アーマチュア９が嵌め込まれ、ろう付けなどで固着され
ている。さらに板バネ５の中央部の屈曲部には穴５ｂが
形成されており、この穴５ｂにはビン１５が挿通される
。The leaf spring 5 is not provided as a movable part in one circular plate in large numbers in succession as in the past, but is formed as an independent unit as shown in the figure, and is bent at the center and has an approximately L shape.
It is formed in a letter shape, and the width of the section A on the front end side is larger than the width of the section B on the rear end side. A wire 8 for hitting the recording medium is fixed to the tip of the leaf spring 5 by brazing or the like. In addition, there is a notch 5 in the middle part of the tip side A of the leaf spring 5.
A rectangular parallelepiped-shaped armature 9 having fM 9 a corresponding to the thickness of the leaf spring 5 is fitted into the notch 5a and fixed by brazing or the like. Further, a hole 5b is formed in the central bent portion of the leaf spring 5, and a bottle 15 is inserted through the hole 5b.

そして以上の構造からなる可動体１７は第２図及び第３
図に示す様な構造でヘッド内に放射状に所定個数組み込
まれる。なお第２図、第３図はそれぞれワイヤ８をガイ
ドする先端ガイドを取り外した状態で示すヘッド要部の
断面図及び平面図である。The movable body 17 having the above structure is shown in FIGS. 2 and 3.
A predetermined number of them are installed radially within the head with a structure as shown in the figure. Note that FIGS. 2 and 3 are a sectional view and a plan view, respectively, of the main part of the head with the tip guide for guiding the wire 8 removed.

第２図において符号１で示すものは従来例のものと同様
の下ヨークであり、中央に開口を有した円板状に形成さ
れており、その上面の外側縁側には円形リング板状の永
久磁石２が固着され、内側縁側にはコイル１ｌｔ−巻回
したコア１０が可動体１７のアーマチュア９のそれぞれ
と対向して所定個数固定されている。In Fig. 2, the reference numeral 1 indicates a lower yoke similar to that of the conventional example, and is formed in the shape of a disk with an opening in the center, and a permanent circular ring plate is provided on the outer edge of the upper surface of the lower yoke. A magnet 2 is fixed, and a predetermined number of cores 10 each having a coil 1lt wound thereon are fixed on the inner edge side facing each of the armatures 9 of the movable body 17.

永久磁石２上には円筒状の中ヨーク１６が固定されてお
り、この中ヨーク１６には板バネ５の後端部側の第１図
に示すＢ部を遊嵌する溝１６ａが放射状に形成されてい
る。A cylindrical middle yoke 16 is fixed on the permanent magnet 2, and a radial groove 16a is formed in the middle yoke 16 to loosely fit the part B shown in FIG. 1 on the rear end side of the leaf spring 5. has been done.

さらに中ヨーク１６上には第３図に単体で示す円形リン
グ板状の上ヨーク６が固定されている。Further, on the middle yoke 16 is fixed an upper yoke 6 in the shape of a circular ring plate, which is shown singly in FIG.

Ｌヨーク６には可動体１７を遊嵌するための切り欠き６
ａが放射状に形成されており、それぞれの切り欠き６ａ
の奥には可動体１７のビン１５を嵌合する溝６ｂが形成
されている。The L yoke 6 has a notch 6 for loosely fitting the movable body 17 therein.
a are formed radially, and each notch 6a
A groove 6b into which the bottle 15 of the movable body 17 is fitted is formed at the back of the movable body 17.

そして可動体１７はビン１５を溝６ｂ中に嵌合してＡ部
側を上ヨーク６の切り欠き６ａ中に遊嵌し、Ｂ部側を中
ヨーク１６の溝１６ａ中に遊嵌してヘッド内に組み込ま
れる。板バネ５の後端部５Ｃは溝１６ａの奥の面に係止
される。Then, the movable body 17 fits the bottle 15 into the groove 6b, loosely fits the A part side into the notch 6a of the upper yoke 6, loosely fits the B part side into the groove 16a of the middle yoke 16, and then heads the movable body 17. be incorporated within. The rear end portion 5C of the leaf spring 5 is locked to the inner surface of the groove 16a.

さらに中ヨーク６上には不図示の先端ガイドが固定され
、これにより可動体１７のビン１５が溝６ｂ内に保持さ
れる。Further, a tip guide (not shown) is fixed on the middle yoke 6, and thereby the bottle 15 of the movable body 17 is held in the groove 6b.

以上の構造のもとに非記録時にはコイル１１が消磁され
ており、永久磁石２の発生する磁界の磁力によりアーマ
チュア９がコア１０に吸着され、板バネ５のＡ部側は第
２図に２点鎖線で示す位置に変位している。Based on the above structure, the coil 11 is demagnetized during non-recording, and the armature 9 is attracted to the core 10 by the magnetic force of the magnetic field generated by the permanent magnet 2. It is displaced to the position shown by the dotted chain line.

この変位はＡ部側がビン１５を支点として回動すること
による。この場合幅の違いからＡ部は撓まず、Ｂ部が本
来ならば２点鎖線で示す位置に回動するところを係止さ
れているため、たわみ量ΔＢ′だけ撓む。This displacement is due to the rotation of the A portion side using the bin 15 as a fulcrum. In this case, part A does not bend due to the difference in width, and part B, which would normally rotate to the position shown by the two-dot chain line, is locked, so it bends by the amount of deflection ΔB'.

そして記録時にはコイル１１が励磁されて永久磁石２の
磁界を打ち消すことにより、アーマチュア９がコア１０
から解放され、板バネ５のＢ部の撓みを解消するための
弾性力でＡ部が第２図に実線で示す位置に回動する。こ
れによりワイヤ８が矢印Ｐで示すように変位して、不図
示のインクリボンを介し不図示の記録媒体を打撃してド
ツト記録がなされる。During recording, the coil 11 is excited and cancels the magnetic field of the permanent magnet 2, so that the armature 9 is connected to the core 10.
2, and the elastic force used to eliminate the deflection of the B section of the leaf spring 5 causes the A section to rotate to the position shown by the solid line in FIG. As a result, the wire 8 is displaced as shown by an arrow P, and a dot is recorded by striking a recording medium (not shown) through an ink ribbon (not shown).

この記録時で実線で示す板バネ５の撓み０の状態でのア
ーマチュア９．コツ１Ｏ間のギャップ寸法はΔＡとなる
。At the time of this recording, the armature 9 is in a state where the deflection of the leaf spring 5 is 0, as shown by the solid line. The gap dimension between tips 1O is ΔA.

ここでビン１５からアーマチュア９先端とコア１０の接
触点までの長さをＩＡとし、ピン１５がら板バネ５の後
端部５ｃの係止点までの長さ、即ち板／ヘネの中で実際
に撓む有効長をΔＢとすると、たわみ賃ΔＢ　は先述と
同じ式で求められる。Here, the length from the pin 15 to the point of contact between the tip of the armature 9 and the core 10 is IA, and the length from the pin 15 to the locking point of the rear end 5c of the leaf spring 5, that is, the actual length in the plate/henne. Assuming that the effective length of deflection is ΔB, the deflection allowance ΔB can be obtained using the same formula as described above.

従来例の場合第９図から明らかなように、必ずｆｆ１Ａ
）ｊ！Ｂとなるので、たわみ量ΔＢはギャップ寸法ΔＡ
より小さくなる。In the case of the conventional example, as is clear from FIG.
)j! B, the amount of deflection ΔB is the gap dimension ΔA
become smaller.

これに対して本実施例では、第２図から明らかなように
ノＡ＜ｆｆ１Ｂとすることができるので、たわみ量ΔＢ
′をギャップ寸法ΔＡより大きく取れ、従来より著しく
太きく取れる。On the other hand, in this embodiment, as is clear from FIG. 2, it is possible to set A<ff1B.
' can be made larger than the gap size ΔA, and it can be made much thicker than before.

このため、従来例と本実施例では板バネのたわみ情とこ
れによるバネ力との関係が第５図に示すように異なって
来る。同図で符号１８と点線で示すのが従来例の特性で
あり、符号１９と実線で示すのが本実施例の特性である
。For this reason, the relationship between the deflection of the leaf spring and the resulting spring force differs between the conventional example and this embodiment, as shown in FIG. In the figure, the characteristic shown by reference numeral 18 and a dotted line is the characteristic of the conventional example, and the characteristic shown by reference numeral 19 and a solid line is the characteristic of the present embodiment.

ここで、第５図に示すようにバネ力Ｆの使用範囲をＤと
した時には、これに対応するたわみ量の許容範囲は従来
では符号Ｓで示すように極めて狭いが、本実施例では特
性１８．１９の傾きの差により符号Ｓ′で示すように、
従来より著しく広くなる。Here, when the usage range of the spring force F is D as shown in FIG. 5, the allowable range of the corresponding deflection amount is conventionally extremely narrow as shown by the symbol S, but in this embodiment, the characteristic 18 Due to the difference in slope of .19, as shown by the symbol S',
It is significantly wider than before.

従って本実施例によれば、板バネ５の部品精度やギャッ
プ寸法ΔＡの精度を余裕を持って設定でき、製造コスト
の低減を図れる。また、板バネ５のバネ力を従来より容
易に均一化でき、安定して高品位に記録を行なうことが
できる。Therefore, according to this embodiment, the accuracy of the parts of the leaf spring 5 and the accuracy of the gap size ΔA can be set with a margin, and manufacturing costs can be reduced. Further, the spring force of the leaf spring 5 can be made more uniform than before, and recording can be performed stably and with high quality.

また本実施例では可動体１７が独立しているため従来の
ように近接する可動部分どうしで振動を遮断する必要が
ない。Furthermore, in this embodiment, since the movable body 17 is independent, there is no need to isolate vibrations between movable parts that are close to each other as in the conventional case.

さらに本実施例によれば、可動体１７がピン１５を支点
として設けられることと板バネ５そのものにワイヤ８を
結合していることから可動部分の組立精度が向上する。Furthermore, according to this embodiment, the assembly accuracy of the movable parts is improved because the movable body 17 is provided with the pin 15 as a fulcrum and the wire 8 is coupled to the plate spring 5 itself.

なお本実施例の構造では板バネ５をＬ字形に屈曲したが
、７字形やへの字形など他の形状に屈曲しても良いし、
屈曲しなくても良い。Note that in the structure of this embodiment, the leaf spring 5 is bent into an L-shape, but it may be bent into other shapes such as a 7-shape or an L-shape.
It doesn't have to be bent.

また板バネ５とアーマチュア９を一体に構成しても良い
、また本実施例では磁力により板バネ５を撓ませたが、
他の機械的手段などにより撓ませる方式も考えられる。Further, the leaf spring 5 and the armature 9 may be constructed integrally, and in this embodiment, the leaf spring 5 is bent by magnetic force.
A method of bending by other mechanical means is also conceivable.

［効　果］ 以上の説明から明らかなように本発明によれば、記録媒
体打撃用ワイヤを先端部に結合した板バネを撓ませた後
に解放することにより前記ワイヤを駆動するワイヤドツ
ト記録ヘッドにおいて、前記板バネの中間部を軸受けす
るとともに、後端部を係１トし、前記板バネの軸受は部
から後端部側の撓みにより板バネの先端部側が前記軸受
は部を支点として回動するようにしたので、板バネと関
連部品の精度に余裕を持たせてコスト低減を図れる。あ
るいは上記精度を従来と同じとしてワイヤを駆動するバ
ネ力をより均一にして、安定して高品位な記録を行なえ
るという優れた効果が得られる。[Effects] As is clear from the above description, according to the present invention, in a wire dot recording head that drives a recording medium striking wire by deflecting and then releasing a plate spring coupled to the tip end of the recording medium striking wire, The intermediate part of the leaf spring is supported by a bearing, and the rear end is engaged, and the bearing of the leaf spring rotates around the bearing part as a fulcrum by deflection from the rear end side. By doing so, it is possible to reduce the cost by providing a margin for the accuracy of the leaf spring and related parts. Alternatively, the excellent effect of stably and high-quality recording can be obtained by making the spring force for driving the wire more uniform while keeping the above-mentioned accuracy the same as before.

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

第１図〜第５図は本発明の詳細な説明するもので、第１
図は板バネ、ワイヤ、アーマチュアからなる可動体の斜
視図、第２図はワイヤドツト記録ヘッドの要部の断面図
、第３図はヘッド要部の平面図、：５４図は上ヨークの
斜視図、第５図は板バネのたわみ量とバネ力の関係を説
明する線図、第６図以下は従来の記録ヘッドを説明する
もので、第６図はヘッドの断面図、第７図はコアの配列
の説明図、第８図は磁路の説明図、第９図は板バネのた
わみ量の説明図、第１０図は板バネの平面図である。 ■・・・下ヨーク　　　　２・・・永久磁石５・・・板
バネ　　　　　６・・・上ヨーク８・・・ワイヤ　　　
　　９・・・アーマチュア１０・・・コア　　　　　１
１・・・コイル１５・・・ピン　　　　　１６・・・中
ヨーク１７・・・可動体 ’−−−，ｗ ヤ　ｉ ％−＼　　ト蝿 第７図 石Ａ路の譚明ｌ 第８図 第９図 オ縦ハ゛ｆ／）３１２−而　〔り 第１０図1 to 5 are detailed explanations of the present invention.
The figure is a perspective view of a movable body consisting of a leaf spring, wire, and armature, Figure 2 is a sectional view of the main parts of the wire dot recording head, Figure 3 is a plan view of the main parts of the head, and Figure 54 is a perspective view of the upper yoke. , Figure 5 is a diagram explaining the relationship between the amount of deflection of the leaf spring and the spring force, Figure 6 and the following diagrams explain the conventional recording head, Figure 6 is a sectional view of the head, and Figure 7 is a diagram showing the core. 8 is an explanatory diagram of the magnetic path, FIG. 9 is an explanatory diagram of the amount of deflection of the leaf spring, and FIG. 10 is a plan view of the leaf spring. ■... Lower yoke 2... Permanent magnet 5... Leaf spring 6... Upper yoke 8... Wire
9... Armature 10... Core 1
1...Coil 15...Pin 16...Middle yoke 17...Movable body' ---, w Ya i %-\ To fly Figure 7 Stone A Road's story Figure 8 Figure 9 Figure 10

Claims (1)

【特許請求の範囲】[Claims] 記録媒体打撃用ワイヤを先端部に結合した板バネを撓ま
せた後に解放することにより前記ワイヤを駆動するワイ
ヤドット記録ヘッドにおいて、前記板バネの中間部を軸
受けするとともに、後端部を係止し、前記板バネの軸受
け部から後端部側の撓みにより板バネの先端部側が前記
軸受け部を支点として回動するようにしたことを特徴と
するワイヤドット記録ヘッド。In a wire dot recording head that drives a recording medium striking wire by deflecting and then releasing a plate spring that is coupled to a tip thereof, the intermediate part of the plate spring is supported, and the rear end is locked. The wire dot recording head is characterized in that the front end of the leaf spring rotates about the bearing as a fulcrum by deflection of the rear end from the bearing of the leaf spring.