JPS5985773A - Dot printer head - Google Patents

Dot printer head

Info

Publication number
JPS5985773A
JPS5985773A JP19694682A JP19694682A JPS5985773A JP S5985773 A JPS5985773 A JP S5985773A JP 19694682 A JP19694682 A JP 19694682A JP 19694682 A JP19694682 A JP 19694682A JP S5985773 A JPS5985773 A JP S5985773A
Authority
JP
Japan
Prior art keywords
needle
armature
force
spring
contact surface
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.)
Granted
Application number
JP19694682A
Other languages
Japanese (ja)
Other versions
JPH0435348B2 (en
Inventor
Masami Horii
正美 堀井
Hidekazu Ishii
石井 英和
Masayuki Iinuma
飯沼 正行
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.)
Tokyo Sanyo Electric Co Ltd
Toshiba TEC Corp
Original Assignee
Tokyo Sanyo Electric Co Ltd
Tokyo Electric 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 Tokyo Sanyo Electric Co Ltd, Tokyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP19694682A priority Critical patent/JPS5985773A/en
Publication of JPS5985773A publication Critical patent/JPS5985773A/en
Publication of JPH0435348B2 publication Critical patent/JPH0435348B2/ja
Granted 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
    • B41J2/27Actuators for print wires
    • B41J2/275Actuators for print wires of clapper type

Landscapes

  • Impact Printers (AREA)

Abstract

PURPOSE:To uniformize printing pressure of each needle, enhance durability, reduce the weight and size of an armature and contrive to reduce consumption of electric power, by a method wherein a contact surface for perpendicularly impacting a needle is provided at an inside end of an armature. CONSTITUTION:The contact surface 22 orthogonal to the axis of a needle cap 10 is provided at the inside end of the armature 15 so that a force of the armature 15 is efficiently transmitted to the needle 7. Accordingly, abrasion resistance of the needle 7, a needle guide 8 and a needle spring holder 9 is enhanced, and no trouble is generated even when the bending quantity of the needle 7 is enlarged. The distance from a fulcrum 23 to an impact point for the needle 7 is uniform, and printing pressure of the needle 7 is also made to be uniform.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この坑5明は、ドツトプリンタヘッドに関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a dot printer head.

〔発明の技術的背影及びその問題点〕[Technical background of the invention and its problems]

第1図及び第2図に示すように、従来、電磁コイル(1
)を励磁してアーマチュア(2)を吸引し、ニードルス
プリング(3)によシ復帰方向へ付勢されているニード
ル(4)をアーマチュア(2)によシ叩打しで印字を行
なっている。ニードル(4)が9本のように少ない場合
は電磁コイル(す及びニードル(4)の配列ピッチも小
さく小型化を図シうるが、ニードル(4>の本数が18
本、24本等と多くなると種々の問題が生ずる。
As shown in Figs. 1 and 2, conventionally, an electromagnetic coil (1
) is excited to attract the armature (2), and printing is performed by striking the needle (4), which is biased in the return direction by the needle spring (3), against the armature (2). If the number of needles (4) is small, such as 9, the arrangement pitch of the electromagnetic coils and needles (4) will be small, allowing for miniaturization, but if the number of needles (4> is 18)
When the number of books increases, such as 24, various problems arise.

すなわち、第3図及び第4図に示すように、ヨーク(5
)が大型化し、ヨーク(5)の中心からアーマチュア(
2)の後部回動中心までの距離り、 十り、が大きくな
り、ヨーク(5)の中心からアーマチュア(2)の内方
端までの距離L2も大きくなる。これにともないニード
ル(4)の曲は量も大きくなる。したがって、第5図に
示すように、アーマチュア(2)の力Aによりニードル
(4)はB方向にスライドすべきものであるにも拘らず
C方向への力をも受けることになシ、ニードル(4)と
ガイドとの間に摩耗が生じ耐久性が著しく低下する。
That is, as shown in FIGS. 3 and 4, the yoke (5
) has become larger, and the armature (
2), the distance to the rear rotation center increases, and the distance L2 from the center of the yoke (5) to the inner end of the armature (2) also increases. Along with this, the volume of the Needle (4) song also increases. Therefore, as shown in FIG. 5, although the needle (4) should slide in the B direction due to the force A of the armature (2), it is also subjected to a force in the C direction. 4) Abrasion occurs between the guide and the guide, resulting in a significant decrease in durability.

これを解決すべく、第6図に示すようにアーマチュア(
2)の内方端にニードル(4)の後端部の軸心と直交す
る斜面(6)を形成する考案が存するが、アーマチュア
(2)が常に後方りに押圧されアーマチュア(2)の支
点の位置が変わる。これによシ、アーマチュア(2)東
支点からニードル(4)に対するインパクト点までの距
離が個々に変化し、ニードル(4)個々の印字圧にバラ
ツキが生じ、印字が不鮮明になυ濃淡差を生ずる。
In order to solve this problem, the armature (
There is an idea to form a slope (6) at the inner end of the needle (2) perpendicular to the axis of the rear end of the needle (4), but the armature (2) is always pushed backwards and the fulcrum of the armature (2) is The position of changes. As a result, the distance from the east fulcrum of the armature (2) to the point of impact on the needle (4) varies individually, causing variations in the printing pressure of each needle (4), resulting in unclear printing and υ shading differences. arise.

第7図及び第8図に示すように、アーマデユア(2)の
長さを増しLlを大きくすればL2すなわちニードル(
4)の曲げ量を小さくして前述した欠点を解消しうるが
、アーマチュア(2)の質量、慣性が犬きくなシ、電磁
コイル(1)への駆ルII電流も大きくなるとともに高
速印字がM L <なシネ利である。
As shown in Figures 7 and 8, if the length of armadure (2) is increased and Ll is increased, L2, that is, needle (
4) The above-mentioned disadvantages can be solved by reducing the amount of bending, but the mass and inertia of the armature (2) will be too large, the drive current to the electromagnetic coil (1) will also increase, and high-speed printing will not be possible. M L < cine interest.

〔発明の目的〕[Purpose of the invention]

この発明はこのような点に鑑みなされたもので、各ニー
ドルの印字圧を均一化し耐久性を高め、アーマチュアを
軽量小型化し消費電力を節減しうるドツトプリンタヘッ
ドをうろことを目的とするものである。
This invention was made in view of these points, and aims to create a dot printer head that can equalize the printing pressure of each needle, increase durability, reduce the weight and size of the armature, and reduce power consumption. .

〔発明の41!を要〕 この発明は、アーマチュアの内方端にニードルの後端と
直角に当接する傾斜した当接面を形成し、これによシ、
ニードルにアーマチュアの力を効率よく印字方向のめに
伝えて摺動部の耐摩耗性を高め、これにともないニード
ルの曲は景が大きくなることを許容しアーマチュアを小
型化軽鰍化して消費電力を節減し、さらに、アーマチュ
アをニードルの復帰力に抗して内方へ伺勢することによ
シ、アーマチュアの後退を防止し、各ニードルの印字圧
を均一化しうるように構成したものである。
[41 inventions! [requires] This invention forms an inclined abutment surface that abuts the rear end of the needle at right angles on the inner end of the armature, thereby
The force of the armature is efficiently transmitted to the needle in the printing direction, increasing the wear resistance of the sliding part, allowing the curve of the needle to become larger, making the armature smaller and lighter, and reducing power consumption. Furthermore, by forcing the armature inward against the returning force of the needle, it is possible to prevent the armature from retreating and to equalize the printing pressure of each needle. .

〔発明の実施例〕[Embodiments of the invention]

この発明の一実施例を81!9図及び第10図に基いて
説明する。(6)はベースで、このベース(6) K 
ハa数のニードル(7)をスライド自任に案内するニー
ドルガイド(8)とニードルスプリング受(9)とが固
定され、ニードル(7)の後端に固着したニードルキャ
ップ(Hlとニードルスプリング受(9〕との間にニー
ドルスプリング09が設けられている。
An embodiment of the present invention will be explained based on FIGS. 81 and 9. (6) is the base, and this base (6) K
A needle guide (8) and a needle spring holder (9) are fixed, which guide the needle (7) in a sliding manner, and a needle cap (Hl) and a needle spring holder (9) are fixed to the rear end of the needle (7). 9] is provided with a needle spring 09.

ついで、ベース(6)に固定されたヨークαeに多数の
コア03が環状に配列され、これらのコア<11に装漸
された電磁コイル1,11と対応するアーマチュアαυ
がアーマチュアガイド四に起伏自在に保持されてている
。このアーマチュアガイド(11はベース(6)及びヨ
ーク0;)の開放端を覆うカバーを兼ねておシ。
Next, a large number of cores 03 are arranged in a ring on a yoke αe fixed to the base (6), and an armature αυ corresponding to the electromagnetic coils 1 and 11 installed in these cores <11
is held freely by four armature guides. This armature guide (11 is the base (6) and yoke 0;) also serves as a cover to cover the open end.

アーマチュアCIIを起伏自在に案内するガイドリプa
ηと、アーマチュア四を内方へ伺勢するスプリング0)
9を収納する凹部α!秒とを備えている。また、アーマ
チュアガイド0(9にはアーマチュアαりの後端に個々
に接合する花弁形のアーマチュアスプリング−と、アー
マチュアαりの復帰位置を定めるストッパQvとが収納
されている。アーマチュアa!jの内方端にはニードル
キャップ0(1の軸心と直焚する当接面94が形成され
ている。
Guide lip a that guides armature CII up and down freely
η and the spring 0 that urges armature 4 inward)
Concave α that stores 9! It has seconds. In addition, the armature guide 0 (9) houses petal-shaped armature springs that are individually joined to the rear ends of the armature α and a stopper Qv that determines the return position of the armature α. An abutment surface 94 is formed at the inner end to directly connect to the axis of the needle cap 0 (1).

仁のよりな4“1g成において、特定の電磁コイルO◆
に通電することによシアーマチュア09は吸引されて支
点Q、νを中心・に回11iIIl、、ニードル(7)
をフライングさせて印字する。その直後にニードル(7
)はニードルスプリングaすの力により復帰し5アーマ
チユアαυはアーマチュアスプリング翰の力によシ復帰
する。このときに、アーマチュアαりには二一ドルギヤ
ップシυを直角に叩打する尚接面に)が形成されている
ため、ニードル(7)はアーマチュアαりの力を効率よ
く受けて印字方向へ動作し湾曲方向の力を受けることは
ない。これによシ、ニードル(7)、ニードルガイド(
8)、ニードルスプリング受(!υの耐摩耗性が同上す
る。したがって、ニードル(7)の曲り。
In the 4"1g composition of Jin, a specific electromagnetic coil O◆
By energizing, the shear mature 09 is attracted and rotates around the fulcrum Q, ν, 11iIIIl, the needle (7).
Print by flying. Immediately after that, the needle (7
) is returned to its original position by the force of the needle spring a, and the armature αυ is returned to its original position by the force of the armature spring. At this time, the needle (7) efficiently receives the force of the armature α and moves in the printing direction because the armature α is formed with a 21-dollar gear υ on the contact surface that strikes the needle at right angles. It does not receive any force in the bending direction. In addition to this, the needle (7) and needle guide (
8), the wear resistance of the needle spring holder (!υ is the same as above. Therefore, the bending of the needle (7).

量を大きくしても支障はなく、アーマチュア0υを短く
し質量及び慣性を小さくすることが可能となυ、消費電
力も節減しうる。さらに、アーマチュア(専はニードル
スプリングα〃の力を受けるがこの力をスプリング01
9の力により打消ずため、各アーマチュア0υは後退す
ることがなく、支点Q4からニードル(7)に対するイ
ンパクト点までの距離は均一である。したがって、ニー
ドル(7)の印字圧も均一で、d1%淡差のない鮮明な
印字状態がイ)fられる。
There is no problem even if the amount is increased, and the armature 0υ can be shortened to reduce mass and inertia, and power consumption can also be reduced. Furthermore, the force of the armature (specifically needle spring α) is received, but this force is transferred to spring 01.
9, each armature 0υ does not retreat, and the distance from the fulcrum Q4 to the point of impact on the needle (7) is uniform. Therefore, the printing pressure of the needle (7) is also uniform, and a clear printing condition with no difference in d1% is achieved.

なお、スプリング0匂に代えで8111図に示すスプリ
ングQ−νを用いだシ、コイルスプリングを用いてもよ
いものである。
Note that instead of the spring 0, a spring Q-ν shown in FIG. 8111 may be used, or a coil spring may be used.

〔発明の効果〕〔Effect of the invention〕

この発明は上述のようにアーマチュアの内方端にニード
ルを直角に叩打する当接面を形成したので、アーマチュ
アの力をニードルに効率よく印字方向に向けて伝えてニ
ードル摺動部の耐摩耗性を高めることができ、これによ
シ、ニードルの曲げ員が大きくなることを許容しアーマ
チュアを小型化軽鼠化して消費電力を節減することがで
き、さらに、アーマチュアをニードルの復帰力に抗して
内方へ伺It、(することにより、アーマチュアの後退
を防止して各ニードルの印字圧を均一化し、したがって
、?)讐淡麦のない鮮明な印字状態を得ることができる
等の効果を有するものである。
As described above, this invention forms a contact surface on the inner end of the armature that strikes the needle at right angles, so the force of the armature is efficiently transmitted to the needle in the printing direction, improving the wear resistance of the needle sliding part. This allows the bending force of the needle to increase, making it possible to make the armature smaller and lighter, thereby reducing power consumption. (By doing so, it is possible to prevent the armature from retreating and to equalize the printing pressure of each needle. Therefore, it is possible to obtain a clear printing condition without any discrepancy.) It is something that you have.

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

第1図は従来の一例を示す側面図、第2図はその電磁コ
イルの配列状態を示す平面図、第;1図は従来の池の例
を示す側面図、第4図はその’jli’、 iLtコイ
ルの配列状態を示す平面図、第5図及び第6図はそのア
ーマチュアとニードルとの関係を拡大して示す側面図、
第7図は従来例としてアーマチュアの長さを増しプζ状
態の側面図、第8図はその?It磁コイルの配列状態を
示す平面図、第9図はこの発明の一実施例を示す縦断側
面図、第10図はその−T’+lSの斜視図、;141
1図はそのスプリングの変形例を示す斜視図である。 7・・・ニードル、14・・・電磁コイル、15・・・
アーマチュア、16・・・アーマチュアガイド、18・
・・スプリング、22・・・当接面、24・・・スプリ
ング出 願 人   東京電気株式会社 −篤 4図 慄○図
Fig. 1 is a side view showing an example of a conventional pond, Fig. 2 is a plan view showing the arrangement of the electromagnetic coils, Fig. 1 is a side view showing an example of a conventional pond, and Fig. 4 is its 'jli'. , a plan view showing the arrangement state of the iLt coil, FIGS. 5 and 6 are side views showing an enlarged view of the relationship between the armature and the needle,
Fig. 7 is a side view of a conventional example in which the length of the armature is increased and Fig. 8 is in the ζ state. 141 is a plan view showing the arrangement state of the It magnetic coil; FIG. 9 is a longitudinal sectional side view showing an embodiment of the present invention; FIG. 10 is a -T'+lS perspective view thereof;
FIG. 1 is a perspective view showing a modification of the spring. 7... Needle, 14... Electromagnetic coil, 15...
Armature, 16... Armature guide, 18.
...Spring, 22...Contact surface, 24...Spring Applicant: Tokyo Electric Co., Ltd. - Atsushi 4 Figure ○ Figure

Claims (1)

【特許請求の範囲】[Claims] 環状に配列された複数の電磁コイルに対向するアーマチ
ュアをアーマチュアガイドにより保持して起伏自在に設
け、前記アーマチュアの内方端に放射方向へ?ff曲さ
れるとともに復帰方向へ付勢されたニードルの後端に略
直角に接合する当接面を形成し、前記ニードルの復帰力
に抗して前記アーマチュアをスプリングによシ内方へ付
勢したことを特徴とするドツトプリンタヘッド。
An armature facing a plurality of electromagnetic coils arranged in an annular manner is supported by an armature guide so as to be freely up and down, and an armature is provided at the inner end of the armature in a radial direction. ff A contact surface is formed that joins at a substantially right angle to the rear end of the needle that is bent and urged in the return direction, and the armature is urged inward by a spring against the return force of the needle. A dot printer head that is characterized by:
JP19694682A 1982-11-10 1982-11-10 Dot printer head Granted JPS5985773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19694682A JPS5985773A (en) 1982-11-10 1982-11-10 Dot printer head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19694682A JPS5985773A (en) 1982-11-10 1982-11-10 Dot printer head

Publications (2)

Publication Number Publication Date
JPS5985773A true JPS5985773A (en) 1984-05-17
JPH0435348B2 JPH0435348B2 (en) 1992-06-10

Family

ID=16366283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19694682A Granted JPS5985773A (en) 1982-11-10 1982-11-10 Dot printer head

Country Status (1)

Country Link
JP (1) JPS5985773A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723854A (en) * 1985-05-01 1988-02-09 Brother Kogyo Kabushiki Kaisha Dot-matrix print head and apparatus for supporting pivotable armatures
US5011307A (en) * 1987-04-20 1991-04-30 Alps Electric Co., Ltd. Wire dot printer head with armature guides
US5174664A (en) * 1985-01-25 1992-12-29 Mannesmann Ac. Armature with angled bore for print needle fastening

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53140118A (en) * 1977-05-12 1978-12-06 Suwa Seikosha Kk Clapper dot printer head
JPS54106319A (en) * 1978-02-07 1979-08-21 Nippon Telegraph & Telephone Wire matrix printing head
JPS5781143U (en) * 1980-11-05 1982-05-19

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53140118A (en) * 1977-05-12 1978-12-06 Suwa Seikosha Kk Clapper dot printer head
JPS54106319A (en) * 1978-02-07 1979-08-21 Nippon Telegraph & Telephone Wire matrix printing head
JPS5781143U (en) * 1980-11-05 1982-05-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174664A (en) * 1985-01-25 1992-12-29 Mannesmann Ac. Armature with angled bore for print needle fastening
US4723854A (en) * 1985-05-01 1988-02-09 Brother Kogyo Kabushiki Kaisha Dot-matrix print head and apparatus for supporting pivotable armatures
US5011307A (en) * 1987-04-20 1991-04-30 Alps Electric Co., Ltd. Wire dot printer head with armature guides

Also Published As

Publication number Publication date
JPH0435348B2 (en) 1992-06-10

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