JPS6149855A - Print head movable body for dot printers - Google Patents
Print head movable body for dot printersInfo
- Publication number
- JPS6149855A JPS6149855A JP59171854A JP17185484A JPS6149855A JP S6149855 A JPS6149855 A JP S6149855A JP 59171854 A JP59171854 A JP 59171854A JP 17185484 A JP17185484 A JP 17185484A JP S6149855 A JPS6149855 A JP S6149855A
- Authority
- JP
- Japan
- Prior art keywords
- print head
- actuating body
- leaf spring
- movable body
- protrusion
- 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
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
- B41J2/27—Actuators for print wires
- B41J2/275—Actuators for print wires of clapper type
Landscapes
- Impact Printers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、各種コンピュータの出力端末機として使用さ
れているドツトプリンタ用印字ヘッド可動体に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a print head movable body for dot printers used as output terminals for various computers.
２ ページ
従来例の構成とその問題点
近年、各種コンピュータの進展により、各種用紙に印字
が可能で、かつ低価格のドツトプリンタが多く利用され
、よシ一層の小型化、低価格化が強く要望されている。2 Page Conventional configuration and its problems In recent years, with the advancement of various types of computers, low-cost dot printers that can print on various types of paper have come into widespread use, and there is a strong demand for further miniaturization and lower cost. ing.
以下に従来のドツトプリンタ用印字ヘッドについて第１
図、および第２図により説明する。Below is the first part about the print head for conventional dot printers.
This will be explained with reference to FIG.
第１図は、従来のドツトプリンタ用印字ヘッドの概略側
断面図である。第１図において、１は印字針、２は印字
針１の一端を案内する案内孔を有する軸受、３は軸受２
を保持する筐体、４は印字針１の他端に固着された作動
体、５は作動体４の一端に固着された板ばね、６は板ば
ね５の一端を支持し、作動体５の磁束を帰還させる継鉄
板、７はスペーサ、８はリング、９は永久磁石、１０は
支持リングでリング８．永久磁石９．支持リング１０は
各々接着により接合されている。１１は基板ｊ２は支持
リング１０と基板１１によりつながれた磁極柱、１３は
消磁コイルを示している。ここで、作動体４．板ばね５
は、複数個円環状に配置され、３ ′−７
磁極柱１２は、作動体４に対向するように配置されてい
る。永久磁石９は、磁極柱１２の外側に配置されリング
状の形状をしている。継鉄板６は作−□動体４の側面を
抱き込むように、複数の溝が設けられている。FIG. 1 is a schematic side sectional view of a print head for a conventional dot printer. In FIG. 1, 1 is a printing needle, 2 is a bearing having a guide hole for guiding one end of the printing needle 1, and 3 is a bearing 2.
4 is an actuating body fixed to the other end of the printing needle 1; 5 is a plate spring fixed to one end of the actuating body 4; 6 supports one end of the plate spring 5; A yoke plate for returning magnetic flux, 7 is a spacer, 8 is a ring, 9 is a permanent magnet, 10 is a support ring, and ring 8. Permanent magnet9. The support rings 10 are each joined by adhesive. Reference numeral 11 indicates a magnetic pole column connected to the substrate j2 by the support ring 10 and the substrate 11, and reference numeral 13 indicates a degaussing coil. Here, the operating body 4. Leaf spring 5
A plurality of 3'-7 magnetic pole columns 12 are arranged in an annular shape, and the 3'-7 magnetic pole columns 12 are arranged so as to face the actuating body 4. The permanent magnet 9 is arranged outside the magnetic pole column 12 and has a ring shape. The yoke plate 6 is provided with a plurality of grooves so as to embrace the side surface of the operating body 4.
次に第２図ａ、ｂ、ｃは、作動体４および板ばね６よシ
なる可動体の拡大平面図、側面図、底面図を示している
。通常、板はね５は、複数のスポット状の溶接が行なわ
れた溶接部１７により前記作動体４と固着されている。Next, FIGS. 2A, 2B, and 2C show an enlarged plan view, side view, and bottom view of the movable body such as the actuating body 4 and the leaf spring 6. Usually, the plate spring 5 is fixed to the actuating body 4 through a welded portion 17 in which a plurality of spot welds are performed.
１５は取り付けねじ穴で、ビス等で継鉄板６とスペーザ
７間に取り付けられる。15 is a mounting screw hole, which is mounted between the yoke plate 6 and the spacer 7 with screws or the like.
以上のように構成された従来のドツトプリンタ用印字ヘ
ッドについて、以下その動作を説明する。The operation of the conventional dot printer print head configured as described above will be described below.
１ず消磁コイル１３に電流が流れていない状態では、永
久磁石９の磁束が、支持ソングｉｏ、基板１１および磁
極柱１２を通って、板ばね５を介して作動体４に導かれ
、さらに前記作動体４の側面より継鉄板６を通９板ばね
５．スペーサ７、リング８を介して、永久磁石９に帰還
される。したがって作動体４は、永久磁石９の磁束によ
り、磁極、柱１２の方に下方に吸引され、板ばね５ｒ／
′ｉ、、磁極柱１２に吸着されたわんだ状態となってい
る。次に、消磁コイル１３に電流を流すと、永久磁石９
の磁束が打ち消され、作動体４の吸引力が減少するため
、板ばね５の復元力により、作動体４は上方に加速され
る。この時、印字針１も上方に加速されるため、軸受２
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。さらに、消磁コイル１３の電流を止めると
、上記の如く、作動体４は、永久磁石９の磁束により再
び吸引されるため、印字針１は元の位置に復帰する。以
上の動作を１サイクルとし、ドツトプリンタ用印字ヘッ
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なわれる。1. When no current flows through the degaussing coil 13, the magnetic flux of the permanent magnet 9 passes through the support song io, the substrate 11 and the magnetic pole column 12, is guided to the actuating body 4 via the leaf spring 5, and then 9 leaf springs 5 are passed through the yoke plate 6 from the side of the operating body 4. It is fed back to the permanent magnet 9 via the spacer 7 and ring 8. Therefore, the actuating body 4 is attracted downward toward the magnetic pole and column 12 by the magnetic flux of the permanent magnet 9, and the leaf spring 5r/
'i, is in a bent state as it is attracted to the magnetic pole column 12. Next, when a current is applied to the degaussing coil 13, the permanent magnet 9
The magnetic flux is canceled and the attractive force of the actuating body 4 is reduced, so the restoring force of the leaf spring 5 accelerates the actuating body 4 upward. At this time, since the printing needle 1 is also accelerated upward, the bearing 2
It protrudes further and impacts an ink ribbon (not shown) to print dots. Furthermore, when the current in the degaussing coil 13 is stopped, the operating body 4 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. The above operations constitute one cycle, and dot matrix printing is performed by operating the printing needle 1 at appropriate times while scanning the dot printer print head left and right.
しかしながら上記の従来の構成によるトン）プリンタ用
印字ヘッド可動体では、第２図に示すように、板はね５
の先端部の横幅が、作動体４の横幅よシも広いため、作
動体４と、板はね５の中心５ ページ
合わせが困難であった。However, in the print head movable body for printers with the above-mentioned conventional configuration, as shown in FIG.
Since the width of the tip of the blade is wider than the width of the actuating body 4, it was difficult to align the center 5 of the actuating body 4 and the plate blade 5.
さらに、例えば、第２図Ｃに示すように、複数のスポッ
ト状の溶接で、作動体４と板ばね４を固着する場合、そ
の固着強度を充分とるためには、前後の溶接箇所間の距
離を一定の長さ以上にとらなければならず、また、第１
図に示すように、溶接箇所を、磁極柱１２に、あたらな
いように板ばね５の外端方向に伸ばさなければならない
。このため、必然的に、板ばね５の全長が長くなり、前
記可動体の慣性モーメントの増加を招き、印字速度の減
少を生じるという欠点を有していた。Furthermore, as shown in FIG. 2C, for example, when the actuating body 4 and the leaf spring 4 are fixed by multiple spot-shaped welds, in order to obtain sufficient bonding strength, the distance between the front and back welding points must be must be longer than a certain length, and the first
As shown in the figure, the welding point must extend toward the outer end of the leaf spring 5 so as not to hit the pole column 12. For this reason, the overall length of the leaf spring 5 is inevitably increased, leading to an increase in the moment of inertia of the movable body, which has the disadvantage of causing a decrease in printing speed.
発明の目的
本発明は、このような従来の欠点を除去するものであり
、ドツトプリンタ用印字ヘッドの可動体の作動体と板は
ねの中心合わせを容易にし、かつドソートプリンタ用印
字ヘッド可動部の慣性モーメントを増加することなく溶
接強度を増加させ信頼性を向上させることを目的とする
ものである。OBJECTS OF THE INVENTION The present invention eliminates such conventional drawbacks, and makes it easy to center the actuating body and plate of the movable body of the print head for dot printers, and also improves the movable part of the print head for dot printers. The purpose of this is to increase welding strength and improve reliability without increasing the moment of inertia of the weld.
発明の構成 この目的を達成するために、本発明は、作動体 。Composition of the invention To achieve this objective, the present invention provides an actuating body.
６ ページ
と、前記作動体の一面に固着された板ばねよりなるドツ
トプリンタ用印字ヘッドの可動体であって、前記板はね
の先端部に、前記作動体の横幅とほぼ同じ幅の突起を設
け、前記突起を前記作動体の一面に固着した板ばねと作
動体を複数のスポット状の溶接で固着するとともに、前
記スポット状の溶接のうち少くとも一箇所は、前記板ば
ねの突起部に配したもので、前記板ばねと、前記作動体
の中心合わせを容易にするもので、前記可動体の慣性モ
ーメントを増加することなく溶接強度を増加させ、信頼
性を向上することができる。6. A movable body for a print head for a dot printer consisting of a page and a leaf spring fixed to one surface of the actuating body, wherein a protrusion having a width approximately the same as the width of the actuating body is provided at the tip of the plate spring. , the plate spring having the protrusion fixed to one surface of the actuating body and the actuating body are fixed by a plurality of spot welds, and at least one of the spot welds is disposed on the protrusion of the plate spring. This facilitates centering of the leaf spring and the actuating body, and it is possible to increase welding strength and improve reliability without increasing the moment of inertia of the movable body.
実施例の説明
、以下本発明の一実施例を、第３図ａ、ｂ、ｃを用いて
説明する。尚、従来例と異なるところは、板ばね１９の
突起部の構造にあり、第１図に示す他の構成部分は説明
を省略する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3a, b, and c. The difference from the conventional example lies in the structure of the protrusion of the leaf spring 19, and the explanation of the other components shown in FIG. 1 will be omitted.
第３図において、１８は作動体、１９は板ばね、２０は
板ばね１９の突起部、２１は取り付けねじ穴、２２ａ、
２２ｂは溶接部を示し、以上で印字ヘッドの可動体を構
成する。第３図Ｃに示すよう７ へ−７
に、突起部２０ば、作動体１８とほぼ同じ幅をしている
ため、突起部２０よす少し広い溝をもった治具（図示せ
ず）に、作動体１８および、板ばね１９を挿入すれば、
作動体１８と板はね１９の中心合わせを容易に行う事が
できる。In FIG. 3, 18 is an actuating body, 19 is a leaf spring, 20 is a protrusion of the leaf spring 19, 21 is a mounting screw hole, 22a,
Reference numeral 22b indicates a welded portion, and the above constitutes the movable body of the print head. As shown in FIG. 3C, since the protrusion 20 has approximately the same width as the actuating body 18, a jig (not shown) with a groove slightly wider than the protrusion 20 is used. , by inserting the actuating body 18 and the leaf spring 19,
The actuating body 18 and the plate spring 19 can be centered easily.
尚、板ばね１９と作動体１８を、複数のスポット状の溶
接で固着する場合、第３図Ｃで、２２ｂで示されたよう
に、突起部２０で少くとも一箇所の溶接を行えば、前後
の溶接箇所間の距離Ｓ２を広くすることができ、また、
前記可動体の慣性モーメントの増加も防ぐ事ができる。In addition, when the leaf spring 19 and the actuating body 18 are fixed by a plurality of spot welds, if at least one weld is performed at the protrusion 20 as shown by 22b in FIG. 3C, The distance S2 between the front and rear welding points can be increased, and
It is also possible to prevent an increase in the moment of inertia of the movable body.
発明の効果
以上のように本発明によれば、作動体と板ばねとの中心
合わせが容易になシ、可動体の組立性を改善する事がで
きる。Effects of the Invention As described above, according to the present invention, it is possible to easily center the actuating body and the leaf spring, and improve the ease of assembling the movable body.
また、例えば、複数のスポット状の溶接で、作動体と板
ばねとを固着する場合、可動体の慣性モーメントを増加
するととなく、溶接強度を増加する事ができる。Further, for example, when the actuating body and the leaf spring are fixed by welding a plurality of spots, the welding strength can be increased without increasing the moment of inertia of the movable body.
第１図は従来のドツトプリンタ用印字ヘッドの概略側半
断面図、第２図ａ、ｂ、ｃは各々、従来のドツトプリン
タ用印字ヘッド可動付の拡大平面図、側面図、底面図、
第３図ａ、ｂ、ｃは本発明の一実施例におけるドツトプ
リンタ用印字ヘッド可動体の拡大平面図、側面図、底面
図である。
１・・・・・・印字針、２・・・・・・軸受、３・・・
・・・筐体、４，１８・・・・・・作動体、６，１９・
・・・・板ばね、６・・・・・・継鉄板、７・・・・・
・スペーサ、８・・・・・・リング、９・・・・・・永
久磁石、１０・・・・・・支持リング、１１・・・・・
・基板、１２・・・・・・磁極柱、１３・・・・・・消
磁コイル、２０・・・・・・突起部、２１・・・・・・
取り付けねじ穴、２２ａ、２２ｂ・・・・・・溶接部。FIG. 1 is a schematic side half sectional view of a print head for a conventional dot printer, and FIGS. 2 a, b, and c are respectively an enlarged plan view, a side view, and a bottom view of a movable print head for a conventional dot printer.
FIGS. 3a, 3b, and 3c are an enlarged plan view, side view, and bottom view of a print head movable body for a dot printer in an embodiment of the present invention. 1... Printing needle, 2... Bearing, 3...
...Housing, 4,18...Operating body, 6,19.
...Plate spring, 6...Yoke plate, 7...
・Spacer, 8...Ring, 9...Permanent magnet, 10...Support ring, 11...
・Substrate, 12...Magnetic pole column, 13...Demagnetizing coil, 20...Protrusion, 21...
Mounting screw holes, 22a, 22b...Welded parts.
Claims (2)
りなるドットプリンタ用印字ヘッドの可動体であって、
前記板ばねの先端部に、前記作動体の横幅とほぼ同じ幅
の突起を設け、前記突起を前記作動体の一面に固着した
事を特徴とするドットプリンタ用印字ヘッド可動体。(1) A movable body of a print head for a dot printer consisting of an actuating body and a leaf spring fixed to one surface of the actuating body,
A print head movable body for a dot printer, characterized in that a protrusion having a width substantially the same as the width of the actuating body is provided at the tip of the leaf spring, and the protrusion is fixed to one surface of the actuating body.
するとともに、前記スポット状の溶接のうち少くとも一
箇所は、前記板ばねの突起に配した事を特徴とする特許
請求の範囲第１項記載のドットプリンタ用印字ヘッド可
動体。(2) The leaf spring and the actuating body are fixed together by a plurality of spot welds, and at least one of the spot welds is disposed on a protrusion of the leaf spring. The print head movable body for a dot printer according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59171854A JPS6149855A (en) | 1984-08-17 | 1984-08-17 | Print head movable body for dot printers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59171854A JPS6149855A (en) | 1984-08-17 | 1984-08-17 | Print head movable body for dot printers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6149855A true JPS6149855A (en) | 1986-03-11 |
Family
ID=15931009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59171854A Pending JPS6149855A (en) | 1984-08-17 | 1984-08-17 | Print head movable body for dot printers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6149855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056941A (en) * | 1986-04-07 | 1991-10-15 | Brother Kogyo Kabushiki Kaisha | Print head assembly of a printing device |
-
1984
- 1984-08-17 JP JP59171854A patent/JPS6149855A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056941A (en) * | 1986-04-07 | 1991-10-15 | Brother Kogyo Kabushiki Kaisha | Print head assembly of a printing device |
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