JPS62297158A - Wire dot printing head - Google Patents
Wire dot printing headInfo
- Publication number
- JPS62297158A JPS62297158A JP13919586A JP13919586A JPS62297158A JP S62297158 A JPS62297158 A JP S62297158A JP 13919586 A JP13919586 A JP 13919586A JP 13919586 A JP13919586 A JP 13919586A JP S62297158 A JPS62297158 A JP S62297158A
- Authority
- JP
- Japan
- Prior art keywords
- armature
- core
- fulcrum
- sheet
- residual sheet
- 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
- 230000006866 deterioration Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Impact Printers (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
この発明はシリアルプリンタにおいて、レシジアルシー
トを挾んでコアに対向するアーマチュアが支点を中心と
して微小往復回転を伴うワイヤドツト印字ヘッドに関す
る。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] This invention is a serial printer in which an armature facing a core with a reciprocal sheet in between makes a wire dot with minute reciprocating rotation about a fulcrum. Regarding the print head.
従来、この種のワイヤドツト印字ヘッドとしては、種々
のものが実施化されているが、例えば、第３図に示すよ
うなものがある。Conventionally, various types of wire dot print heads of this type have been implemented, including one shown in FIG. 3, for example.
第３図は従来のバネチャージ型ワイヤドツト印字ヘッド
の１ドツト分の構成を示す概略図である。FIG. 3 is a schematic diagram showing the structure of one dot of a conventional spring-charged wire dot print head.
第１ヨーク１と第２ヨーク１ａとの間に一端を゛固定し
た板ばね２の他端にアーマチュア３が支持され、コア５
と第２ヨーク１ａとの間に介在し、アーマチュア３の先
端に印字ワイヤ７が固定されている。An armature 3 is supported on the other end of a leaf spring 2 whose one end is fixed between the first yoke 1 and the second yoke 1a, and the core 5
A printing wire 7 is interposed between the armature 3 and the second yoke 1a, and is fixed to the tip of the armature 3.
マグネット６の磁束が第１ヨーク１．第２ヨーク１ａ、
アーマチュア３．コア５を通って再びマグネット６に戻
る磁路が形成されている。The magnetic flux of the magnet 6 is applied to the first yoke 1. second yoke 1a,
Armature 3. A magnetic path is formed that passes through the core 5 and returns to the magnet 6 again.
この磁路によってアーマチュア３がコア５に吸引されて
板ばね２はＳ字状に変形し、歪みエネルギを蓄えて定常
状態にある。The armature 3 is attracted to the core 5 by this magnetic path, and the leaf spring 2 is deformed into an S-shape, stores strain energy, and is in a steady state.
前記構成において、印字ワイヤ７を駆動する場合、コイ
ル８に電流を流し、コイル８の磁束によってマグネット
６の磁束を打消すと、アーマチュア３はコア５から解放
され、板はね２に蓄えられた歪みエネルギの放出により
Ｆ方向に移動する。In the above configuration, when driving the printing wire 7, when a current is applied to the coil 8 and the magnetic flux of the magnet 6 is canceled by the magnetic flux of the coil 8, the armature 3 is released from the core 5 and the magnetic flux stored in the plate spring 2 is released. It moves in the F direction due to the release of strain energy.
アーマチュア３の先端に固定された印字ワイヤ７がイン
クリボンを介して印字媒体に衝突することによって一つ
のドツトが印刷される。A print wire 7 fixed to the tip of the armature 3 collides with the print medium via an ink ribbon, thereby printing one dot.
コイル８の電流を切ると、アーマチュア３は再びマグネ
ット６の磁束によフ吸引され定常状態に戻る。When the current in the coil 8 is cut off, the armature 3 is again attracted by the magnetic flux of the magnet 6 and returns to a steady state.
以上の一連の動作は支点９を中心とした微小角度の往復
回転であり、わずかながら、摺動を伴う。The above series of operations is a reciprocating rotation at a minute angle around the fulcrum 9, and is accompanied by a slight amount of sliding.
しかも、この動作は２〜３ＫＨｚの高い周波数で繰返さ
れ、支点９・には吸引力↑印字ワイヤ７の衝突による反
力が断続的に付加される。Furthermore, this operation is repeated at a high frequency of 2 to 3 KHz, and a reaction force due to the collision of the print wire 7 with the suction force ↑ is intermittently applied to the fulcrum 9.
したがって、支点９およびアーマチュア３の摩耗により
、特性劣化や動作不良が生じるという問題点があった。Therefore, there is a problem in that the wear of the fulcrum 9 and the armature 3 causes deterioration of characteristics and malfunction.
そこで、これに対処するために、第１および第２従来例
が提案されている。In order to deal with this problem, first and second conventional examples have been proposed.
第４図は第１従来例の構成を示す要部拡大図である。FIG. 4 is an enlarged view of main parts showing the configuration of the first conventional example.
第１従来例は金属製コア５のコーナ一部を支点９とし、
アーマチュア３とコア５との間にレシジアルシート１０
を挾み、潤滑剤で潤滑するようにしたも”のである。In the first conventional example, a part of the corner of the metal core 5 is used as the fulcrum 9,
Residual sheet 10 between armature 3 and core 5
It was designed to hold the material in place and lubricate it with lubricant.
支点９が金属製であるので、支点９およびアーマチュ３
の摩耗は防止されても、レシジアルシート１０が摩耗し
、前記と同様な特性劣化を引き起こしてしまう。Since the fulcrum 9 is made of metal, the fulcrum 9 and the armature 3
Even if the abrasion of the residial sheet 10 is prevented, the residial sheet 10 will be abraded and the same deterioration of characteristics as described above will occur.
第５図は第２従来例の構成を示す要部拡大図である。FIG. 5 is an enlarged view of main parts showing the configuration of the second conventional example.
第２従来例はレシジアルシート１０の介在に加えて金属
に比べ剛性が低く弾性に富んだ樹脂等の素材からなるコ
アピース１１をコーナ一部に設ケ、これを支点９とした
ものである。In the second conventional example, in addition to the interposition of the residial sheet 10, a core piece 11 made of a material such as resin, which has lower rigidity than metal and is more elastic, is installed at a part of the corner, and this core piece 11 is used as the fulcrum 9.
とのコアピース１１の弾性によって、吸引力や衝撃力等
の荷重が吸収緩和されるので、レシジアルシート１０の
摩耗を防止することができる。The elasticity of the core piece 11 absorbs and relieves loads such as suction force and impact force, so that wear of the residial sheet 10 can be prevented.
しかし、前記構成の第２従来例であっても、接着等【で
よってコアとコアピースとの接合が不可欠であるので、
接合部には小さな面積で高い強度が要求され、また、支
点の接合強度の不足によシ、寿命の低下を招来してしま
い、しかも、部品点数。However, even in the second conventional example with the above configuration, bonding between the core and the core piece is essential.
High strength is required for the joints in a small area, and insufficient joint strength at the fulcrum can lead to a shortened lifespan, and the number of parts is high.
加工・組立工数を増大させてコストアップとなるという
問題点があった。There is a problem in that the number of processing and assembly steps increases, leading to an increase in costs.
そこで、この発明は前記問題点に着目してなされたもの
で、その目的とするところは、レシジアルシートの摩耗
による特性劣化を防止し、寿命を延ばし、しかも、部品
点数や加工・組立工数の低減化およびコストの低廉化を
図ったワイヤドツト印字ヘッドを提供することにある。Therefore, this invention was made with attention to the above-mentioned problems, and its purpose is to prevent the deterioration of characteristics due to wear of the resigial sheet, extend its life, and reduce the number of parts and processing/assembly man-hours. It is an object of the present invention to provide a wire dot print head which is designed to reduce the size and cost.
前記目的に沿うこの発明はアーマチュアのコア側に断面
円弧状あるいは断面直線状の面取部あるいは切欠部を形
成し、レシジアルシートとの接点をアーマチュアの支点
としたことを要旨とする。The gist of the present invention in accordance with the above object is that a chamfer or notch having an arcuate cross section or a straight cross section is formed on the core side of the armature, and the point of contact with the residial sheet is used as the fulcrum of the armature.
前記構成のワイヤドツト印字ヘッドにおいて、印字動作
に際し、アーマチュアは周波数ごとに支点を中心とした
微小往復回転を伴う。In the wire dot print head configured as described above, during printing operation, the armature undergoes minute reciprocating rotations around the fulcrum at each frequency.
この微小往復回転によって支点としての接点は面取部あ
るいは切欠部の円弧あるいは直線に沿って移動し、同時
にレシジアルシート上を長手方向に移動する。Due to this minute reciprocating rotation, the contact point serving as a fulcrum moves along the arc or straight line of the chamfer or notch, and at the same time moves in the longitudinal direction on the residial sheet.
そのため、吸引力や衝撃力等の荷重がレシジアルシート
上の１点に集中することがない。Therefore, loads such as suction force and impact force are not concentrated at one point on the residial sheet.
したがって、前記問題点を除去することができる。Therefore, the above problem can be eliminated.
以下、この発明の実施例を図面に基づいて詳細に説明す
る。Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第１図はこの発明の実施例に係るワイヤドツト印字ヘッ
ドを示す要部拡大図である。FIG. 1 is an enlarged view of essential parts of a wire dot print head according to an embodiment of the invention.
同図において、３は板ばね２に支持されるアーマチュア
であり、このアーマチュア３はレシジアルシート１０を
挾んでコア５に対向して設けられている。In the figure, reference numeral 3 denotes an armature supported by a leaf spring 2, and this armature 3 is provided facing the core 5 with the residial sheet 10 in between.
このアーマチュア３のコーナ一部のうち板ばね側でかつ
コア側のコーナ一部に面取部１２ａが形成され、面取部
１２ａは断面円弧形状を有する。A chamfered portion 12a is formed at a portion of the corner of the armature 3 on the leaf spring side and on the core side, and the chamfered portion 12a has an arcuate cross section.
この面取部１２ａの円弧とレジシアルシー）１０との接
点がコア５のコーナ一部５ａよシも内側に位置してアー
マチュア３の支点９ａとしての機能を有する。The contact point between the circular arc of the chamfered portion 12a and the legislity seam 10 is located inside the corner portion 5a of the core 5, and functions as the fulcrum 9a of the armature 3.
面取部１２ａを断面円弧状に形成する方法については、
８角形または６角形のバレルの中にアーマチュア３、研
摩剤および媒剤を入れ、これに水を加え、次いでバレル
を回転させてアーマチュア３の面取部１２ａを断面円弧
状に形成する。Regarding the method of forming the chamfered portion 12a to have an arcuate cross section,
The armature 3, abrasive and medium are placed in an octagonal or hexagonal barrel, water is added thereto, and the barrel is then rotated to form the chamfered portion 12a of the armature 3 into an arcuate cross section.
次に、前記構成のワイヤドツト印字ヘッドの動作を説明
する。Next, the operation of the wire dot print head having the above structure will be explained.
印字動作に際し、アーマチュア３は周波数ごとに支点９
ａを中心とした微小往復回転を伴う。During printing operation, the armature 3 moves to the fulcrum 9 for each frequency.
It involves minute reciprocating rotation around a.
この微小往復回転によって支点９ａとしての接点は面取
部１２ａの円弧に沿って移動し、同時にレシジアルシー
ト１０上を長手方向に移動する。Due to this minute reciprocating rotation, the contact point serving as the fulcrum 9a moves along the arc of the chamfered portion 12a, and at the same time moves on the residial sheet 10 in the longitudinal direction.
そのため、吸引力や衝撃力等の荷重が支点９ａを介して
レシジアルシート１０上の１点に集中することがない。Therefore, loads such as suction force and impact force are not concentrated at one point on the residial sheet 10 via the fulcrum 9a.
第２図（Ａ） 、 （Ｂ）はこの発明の他の実施例を示
す要部拡大図である。FIGS. 2(A) and 2(B) are enlarged views of main parts showing another embodiment of the present invention.
第２図（Ａ）に示す実施例は前記実施例とほぼ同様の構
成を有するが、面取部１２ｂの円弧の半径を前記実施例
のそれよりも大きくし、支点９ｂの移動範囲を拡大した
点で特徴を有する。 。The embodiment shown in FIG. 2(A) has almost the same configuration as the previous embodiment, but the radius of the arc of the chamfered portion 12b is made larger than that of the previous embodiment, and the movement range of the fulcrum 9b is expanded. It is characterized by points. .
また、第２図（Ｂ）に示す実施例は面取部１２ｃを断面
直線状に形成し、レシジアルシート１０との接点をアー
マチュア３の支点９ｃとすることもできる。Further, in the embodiment shown in FIG. 2(B), the chamfered portion 12c may be formed to have a straight cross section, and the point of contact with the residial sheet 10 may be the fulcrum 9c of the armature 3.
これら他の実施例の作用については、前記実施例とほぼ
同様であるので、その説明を省略する。Since the operations of these other embodiments are substantially the same as those of the above embodiment, their explanation will be omitted.
なお、この発明は前記実施例に限定されるものでなく、
種々の改変が可能であることはもちろんである。Note that this invention is not limited to the above embodiments,
Of course, various modifications are possible.
この実施例では、断面円弧状あるいは断面直線状の面取
部で説明したが、これに限らず、コアの一端のエツジを
使用せず、アーマチュアの運動の支点を形成するのにそ
の一部分を使用できる形状であればよい。例えば、断面
円弧状あるいは直線状の切欠部をアーマチュアのコア側
に形成し、レシジアルシートとの接点をアーマチュアの
支点とすることもできる。In this embodiment, the chamfered portion has an arcuate cross section or a straight cross section. However, the present invention is not limited to this. Instead of using the edge at one end of the core, a part of it is used to form the fulcrum of the movement of the armature. Any shape that can be used is fine. For example, a notch having an arcuate or linear cross section may be formed on the core side of the armature, and the point of contact with the residial sheet may be used as the fulcrum of the armature.
以上の説明から明らかなように、この発明によれば、ア
ーマチュアに長手方向に移動可能な支点を設けた構成と
したので、レシジアルシートへの荷重の集中化を防止し
て耐摩耗性を向上させ、寿命を延ばすことができる。As is clear from the above description, according to the present invention, since the armature is provided with a longitudinally movable fulcrum, concentration of load on the residial seat is prevented and wear resistance is improved. can extend its lifespan.
また、コアに支点を設ける必要がないので、コア形状の
自由度を増大させることができる。Furthermore, since there is no need to provide a fulcrum on the core, the degree of freedom in the shape of the core can be increased.
さらに、従来の樹脂等の弾性体をコアに接合した構成に
比して部品点数及び加工・組立工数を減少させ、しかも
、接合強度のばらつきによる信頼性への悪影響をもなく
すことができるという効果が得られる。Furthermore, compared to the conventional configuration in which an elastic body such as resin is bonded to the core, the number of parts and processing/assembly man-hours can be reduced, and the negative effects on reliability caused by variations in bond strength can be eliminated. is obtained.
第１図はこの発明の実施例に係るワイヤドツト印字ヘッ
ドを示す要部拡大図、第２図は他の実施例に係るワイヤ
ドツト印字ヘッドを示す要部拡大図、第３図は従来のワ
イヤドツト印字ヘッドを示す構成図、第４図は第１従来
例の構成を示す要部拡大図、第５図は第２従来例の構成
を示す要部拡大図である。
１・・・第１ヨーク ２・・・板ばね ３・・・アーマ
チュア ４・・・第２ヨーク ５・・・コア ６・・・
マグネット７・・・印字ワイヤ ８・・・コイル ９ａ
・・・支点９ｂ・・・支点 ９ｃ・・・支点 １０・・
・レシジアルシート１２ａ・・・面取部 １２ｂ・・・
面取部 １２ｃ・・・面取部
特許出願人 沖電気工業株式会社
代理人 弁理士 金 倉 喬 二実施例の要部
拡大図
紬 １ 図
（Ａ） （Ｂ）他の実施例の要
部拡大図
舖 ２ 図
醜 ３ 図FIG. 1 is an enlarged view of main parts showing a wire dot print head according to an embodiment of the present invention, FIG. 2 is an enlarged view of main parts showing a wire dot print head according to another embodiment, and FIG. 3 is a conventional wire dot print head. FIG. 4 is an enlarged view of main parts showing the structure of the first conventional example, and FIG. 5 is an enlarged view of main parts showing the structure of the second conventional example. 1... First yoke 2... Leaf spring 3... Armature 4... Second yoke 5... Core 6...
Magnet 7...Printing wire 8...Coil 9a
...Fulcrum 9b...Fulcrum 9c...Fulcrum 10...
・Residial sheet 12a... Chamfered portion 12b...
Chamfered portion 12c... Chamfered portion Patent applicant: Oki Electric Industry Co., Ltd. Agent Patent attorney: Takashi Kanakura Enlarged view of the main part of the second embodiment Tsumugi 1 Figures (A) (B) Enlargement of the main part of the other embodiment Illustration 2 Illustration Ugly 3 Illustration
Claims (1)
ートと、 を備えたワイヤドット印字ヘッドにおいて、前記アーマ
チュアとレシジアルシートとの接点をアーマチュアの支
点としたことを特徴とするワイヤドット印字ヘッド。[Claims] 1. Wire dot printing comprising: a core around which a coil is wound; an armature supported by a leaf spring and facing the core; and a residial sheet interposed between the armature and the core. A wire dot print head characterized in that the contact point between the armature and the residial sheet is used as a fulcrum of the armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13919586A JPS62297158A (en) | 1986-06-17 | 1986-06-17 | Wire dot printing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13919586A JPS62297158A (en) | 1986-06-17 | 1986-06-17 | Wire dot printing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62297158A true JPS62297158A (en) | 1987-12-24 |
Family
ID=15239768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13919586A Pending JPS62297158A (en) | 1986-06-17 | 1986-06-17 | Wire dot printing head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62297158A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174663A (en) * | 1988-12-09 | 1992-12-29 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
-
1986
- 1986-06-17 JP JP13919586A patent/JPS62297158A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174663A (en) * | 1988-12-09 | 1992-12-29 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
| US5281037A (en) * | 1988-12-09 | 1994-01-25 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
| US5368401A (en) * | 1988-12-09 | 1994-11-29 | Seiko Epson Corporation | Wire dot print head with rotating lever |
| US5527118A (en) * | 1988-12-09 | 1996-06-18 | Seiko Epson Corporation | Wire dot print head and method for manufacturing same |
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