JPH0717485Y2 - Hammer mechanism - Google Patents
Hammer mechanismInfo
- Publication number
- JPH0717485Y2 JPH0717485Y2 JP1990072467U JP7246790U JPH0717485Y2 JP H0717485 Y2 JPH0717485 Y2 JP H0717485Y2 JP 1990072467 U JP1990072467 U JP 1990072467U JP 7246790 U JP7246790 U JP 7246790U JP H0717485 Y2 JPH0717485 Y2 JP H0717485Y2
- Authority
- JP
- Japan
- Prior art keywords
- hammer
- printing
- comb
- row direction
- connecting portion
- 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.)
- Expired - Lifetime
Links
Landscapes
- Impact Printers (AREA)
Description
【考案の詳細な説明】 〔考案の利用分野〕 本考案はドットラインプリンタに使用される印字ハンマ
を複数個備えたハンマ機構部に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Utilization of the Invention] The present invention relates to a hammer mechanism section having a plurality of printing hammers used in a dot line printer.
板バネ状印字ハンマを永久磁石の磁気吸引力によって非
印字位置に保持し、釈放用電磁コイルに所定パルス幅の
釈放電流を流すことによって前記印字ハンマを釈放飛行
させて印字するスプリングチャージ式印字ハンマにおい
て次のような問題があった。A spring-charged printing hammer that holds a leaf spring-shaped printing hammer in a non-printing position by a magnetic attraction force of a permanent magnet, and causes the printing electromagnetic hammer to release by flying a release current having a predetermined pulse width for printing. There was the following problem in.
第３図は従来のハンマ機構部を示す斜視図である。FIG. 3 is a perspective view showing a conventional hammer mechanism section.
前記構成のハンマ機構部において、前記釈放電流を流す
と駆動された印字ハンマ５の磁気抵抗が増加するため、
該当部の磁束Faが図に示す如く周辺桁へ流れ込む。その
結果周辺桁では通常より吸引力が増加し、周辺桁のコイ
ル８に釈放電流を流しても、印字ハンマ５が吸引位置か
ら釈放されにくくなる。In the hammer mechanism section having the above-described configuration, when the release current is passed, the magnetic resistance of the driven printing hammer 5 increases,
The magnetic flux F a of the relevant part flows into the peripheral girder as shown in the figure. As a result, the suction force at the peripheral girder increases more than usual, and even if a release current is applied to the coil 8 of the peripheral girder, the printing hammer 5 is less likely to be released from the suction position.
従って、印字ハンマ５の釈放飛行にはスピードがつか
ず、印刷品質上好ましくない打撃力の低下を引き起こす
という欠点があった。Therefore, the release flight of the printing hammer 5 is slow, and there is a drawback in that the hitting force is deteriorated, which is unfavorable for print quality.
本考案の目的は、上記した従来技術の欠点をなくし、印
字ハンマの釈放飛行を円滑にし、印刷品質を常に安定す
ることである。An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to smoothly release the print hammer, and to always stabilize the print quality.
本考案は、空気の磁気抵抗がコムヨークを構成する例え
ばケイ素鋼よりも非常に大きい点に着目し、桁間の磁気
抵抗を大きくするために、各桁間に空気層または磁気絶
縁層となる空間を設けたものである。The present invention focuses on the fact that the magnetic reluctance of air is much higher than that of, for example, silicon steel that constitutes a comb yoke, and in order to increase the reluctance between digits, a space that becomes an air layer or a magnetic insulating layer between each digit. Is provided.
以下実施例図面を参照して本考案を説明する。 The present invention will be described below with reference to the accompanying drawings.
第１図は印字ピン６を備えた印字ハンマ５、該印字ハン
マ５を吸引するための磁気回路を形成するコムヨーク
１、永久磁石２、ヨークベース３、フロントヨーク４及
び釈放用電磁コイル８より構成されている。FIG. 1 is composed of a printing hammer 5 having a printing pin 6, a comb yoke 1 forming a magnetic circuit for attracting the printing hammer 5, a permanent magnet 2, a yoke base 3, a front yoke 4, and a release electromagnetic coil 8. Has been done.
前記コムヨーク１は、前記永久磁石２の上部に載置さ
れ、永久磁石２と同一方向に延びた連結部及び該連結部
から各印字ハンマ５の上部背面に対向する如く延びた櫛
歯状のポール部から構成されている。The comb yoke 1 is placed on the upper part of the permanent magnet 2 and has a connecting part extending in the same direction as the permanent magnet 2 and a comb tooth-shaped pole extending from the connecting part so as to face the upper back surface of each printing hammer 5. It is composed of parts.
本構成において、磁気回路を形成するコムヨーク１の各
桁間に空間９を設ける。空気の磁気抵抗はケイ素鋼の磁
気抵抗よりも大きいので、この空間９の空気層は、ある
桁の印字ハンマ５を駆動した場合に隣接ハンマ５に流れ
込む磁束F1を極力押さえられ得る。In this configuration, a space 9 is provided between each digit of the comb yoke 1 forming the magnetic circuit. Since the magnetic resistance of air is larger than that of silicon steel, the air layer in this space 9 can suppress the magnetic flux F 1 flowing into the adjacent hammer 5 as much as possible when the printing hammer 5 of a certain digit is driven.
更に、隣接するハンマ５を同時に駆動した場合において
も、磁束F1のまわり込みによる吸引力の増加を押さえる
ことが可能である。Further, even when the adjacent hammers 5 are driven at the same time, it is possible to suppress the increase of the attraction force due to the entrainment of the magnetic flux F 1 .
前記コムヨーク１の空間９は例えば第４図のようにして
成形することができる。The space 9 of the comb yoke 1 can be formed, for example, as shown in FIG.
すなわち、コムヨーク１とほぼ同一形状の上板11とポー
ル部間の連結部に穴をあけた複数の中間板12を積層する
ことにより、中間板12の前記穴が空間９となる。なお、
上板11及び中間板12は例えばプレスにより成形される。That is, by stacking the upper plate 11 having substantially the same shape as that of the comb yoke 1 and a plurality of intermediate plates 12 having holes formed at the connecting portions between the pole portions, the holes of the intermediate plate 12 become the spaces 9. In addition,
The upper plate 11 and the intermediate plate 12 are formed by pressing, for example.
第５図は本考案コムヨーク１の他の実施例を示すもの
で、前記空間９を後端面まで延ばし開口した空間10とし
たものである。第５図のコムヨーク１の空間は例えば第
６図のようにして成形することができる。FIG. 5 shows another embodiment of the comb yoke 1 of the present invention, in which the space 9 is extended to the rear end face to form a space 10. The space of the comb yoke 1 shown in FIG. 5 can be formed as shown in FIG. 6, for example.
すなわち、第４図の上板とほぼ同一形状の上板21及びポ
ール部間の連結部に溝を設けた厚み大の下板22を重ね合
わせることにより、下板22の溝が空間10となる。That is, the groove of the lower plate 22 becomes the space 10 by stacking the upper plate 21 having substantially the same shape as that of the upper plate of FIG. 4 and the thick lower plate 22 having the groove at the connecting portion between the pole portions. .
なお、下板22は例えばワイヤカットにより成形される。The lower plate 22 is formed by wire cutting, for example.
上記実施例においては、空間９、10を空気層としたが、
磁気抵抗の大きい例えば合成樹脂を充填してもよく、こ
の場合にはコムヨーク１の剛性を向上させることができ
る。In the above embodiment, the spaces 9 and 10 are air layers,
For example, synthetic resin having a large magnetic resistance may be filled, and in this case, the rigidity of the comb yoke 1 can be improved.
本考案によれば、桁間に磁気抵抗の大なる空間を設けた
ことにより、隣接する印字ハンマを同時に駆動した場合
でも磁束のまわり込みによる吸引力の増加を押さえるこ
とが可能となり、濃淡差のない安定した印刷品質を得る
ことができる。According to the present invention, by providing a space having a large magnetic resistance between the digits, it is possible to suppress an increase in the attraction force due to the wraparound of magnetic flux even when the adjacent printing hammers are driven at the same time. It is possible to obtain stable print quality.
また、空間を設けることにより重量の軽減が可能とな
り、ハンマ機構部全体の重量の削減を図ることができ
る。Further, by providing the space, the weight can be reduced, and the weight of the entire hammer mechanism portion can be reduced.
更に、本考案によれば、コムヨークの連結部は行方向に
沿って延びており、該連結部の各桁間には行方向及び上
下方向に閉じた空間が形成されているので、コムヨーク
の剛性が下がることはない。Further, according to the present invention, since the connecting portion of the comb yoke extends along the row direction and a space closed in the row direction and the vertical direction is formed between the columns of the connecting portion, the rigidity of the comb yoke is increased. Does not go down.
第１図は本考案によるハンマ機構部を示す斜視図、第２
図は第１図の側面図、第３図は従来例によるハンマ機構
部を示す斜視図、第４図は第１図のコムヨークの一形成
例を示す展開斜視図、第５図はハンマ機構部の他の実施
例を示す斜視図、第６図は第５図のコムヨークの一形成
例を示す展開斜視図である。 図において、１はコムヨーク、２は永久磁石、３はヨー
クベース、４はフロントヨーク、５は印字ハンマ、６は
印字ピン、７はプランジャー、８はコイル、９、10は空
間、F1、F2は磁束である。FIG. 1 is a perspective view showing a hammer mechanism portion according to the present invention, and FIG.
1 is a side view of FIG. 1, FIG. 3 is a perspective view showing a hammer mechanism portion according to a conventional example, FIG. 4 is a developed perspective view showing an example of forming the comb yoke of FIG. 1, and FIG. 5 is a hammer mechanism portion. FIG. 6 is a perspective view showing another embodiment of the present invention, and FIG. 6 is a developed perspective view showing an example of formation of the comb yoke of FIG. In the figure, 1 is a comb yoke, 2 is a permanent magnet, 3 is a yoke base, 4 is a front yoke, 5 is a print hammer, 6 is a print pin, 7 is a plunger, 8 is a coil, 9 and 10 are spaces, F 1 , F 2 is the magnetic flux.
Claims (1)
れた複数個の板バネ状のドット印字ハンマと、該印字ハ
ンマを非印字位置に保持するために磁気吸引力を発生す
る永久磁石と、該永久磁石の上部に載置した連結部から
前記各印字ハンマの上部背面に対向する如く延びた櫛歯
状のポール部からなるコムヨークと、該コムヨークのポ
ール部に巻回された釈放用電磁コイルと、前記複数個の
印字ハンマを保持し、行方向に沿って往復移動するハン
マバンクとを備え、該ハンマバンクの往復移動の過程で
前記印字ハンマを駆動して印字するドットラインプリン
タにおいて、 前記コムヨークの連結部は行方向に沿って延びていると
共に、該連結部の各桁間には行方向及び上下方向に閉じ
た空間が形成されていることを特徴とするハンマ機構
部。1. A plurality of leaf spring-shaped dot printing hammers arranged side by side at a predetermined pitch in the row direction, and a permanent magnet that generates a magnetic attraction force to hold the printing hammers at a non-printing position. A comb yoke composed of comb-shaped pole portions extending from a connecting portion mounted on the upper portion of the permanent magnet so as to face the upper rear surface of each printing hammer, and a release electromagnetic coil wound around the pole portions of the comb yoke. A dot line printer that holds a coil and a plurality of printing hammers and includes a hammer bank that reciprocates along a row direction, and drives and prints the printing hammer in the process of reciprocating the hammer bank, The hammer mechanism section is characterized in that the connecting portion of the comb yoke extends along the row direction, and a space closed in the row direction and in the vertical direction is formed between each column of the connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990072467U JPH0717485Y2 (en) | 1990-07-06 | 1990-07-06 | Hammer mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990072467U JPH0717485Y2 (en) | 1990-07-06 | 1990-07-06 | Hammer mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0430944U JPH0430944U (en) | 1992-03-12 |
| JPH0717485Y2 true JPH0717485Y2 (en) | 1995-04-26 |
Family
ID=31610429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990072467U Expired - Lifetime JPH0717485Y2 (en) | 1990-07-06 | 1990-07-06 | Hammer mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0717485Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59194870A (en) * | 1983-04-20 | 1984-11-05 | Citizen Watch Co Ltd | Spring energy accumulating type dot printing head |
| JPS5948843B2 (en) * | 1981-12-21 | 1984-11-29 | 株式会社メタル・リサ−チ・コ−ポレ−シヨン | Graphite nodularizing agent for spheroidal graphite cast iron and its manufacturing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5948843U (en) * | 1982-09-25 | 1984-03-31 | 日立工機株式会社 | printing hammer |
-
1990
- 1990-07-06 JP JP1990072467U patent/JPH0717485Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5948843B2 (en) * | 1981-12-21 | 1984-11-29 | 株式会社メタル・リサ−チ・コ−ポレ−シヨン | Graphite nodularizing agent for spheroidal graphite cast iron and its manufacturing method |
| JPS59194870A (en) * | 1983-04-20 | 1984-11-05 | Citizen Watch Co Ltd | Spring energy accumulating type dot printing head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0430944U (en) | 1992-03-12 |
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