JPH0433279B2 - - Google Patents
Info
- Publication number
- JPH0433279B2 JPH0433279B2 JP60280345A JP28034585A JPH0433279B2 JP H0433279 B2 JPH0433279 B2 JP H0433279B2 JP 60280345 A JP60280345 A JP 60280345A JP 28034585 A JP28034585 A JP 28034585A JP H0433279 B2 JPH0433279 B2 JP H0433279B2
- Authority
- JP
- Japan
- Prior art keywords
- printing
- piezoelectric element
- mooring
- leaf spring
- hammer
- 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
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
- B41J2/295—Actuators for print wires using piezoelectric elements
Landscapes
- Impact Printers (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はインパクト式の印字ハンマ、特に自由
飛行（フリーフライト）型の印字ハンマに関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an impact-type printing hammer, and particularly to a free-flight printing hammer.
（従来技術とその問題点）
自由飛行型の印字ハンマは長ストロークが得ら
れるという利点がある。(Prior Art and its Problems) A free-flying printing hammer has the advantage of being able to provide a long stroke.
従来、自由飛行型の印字ハンマとして電磁石を
用いたものが広く使用されている。しかし電磁石
を用いたものは電気機械エネルギー変換効率が低
いため、必要とする印字エネルギーに対して多大
な入力エネルギーを与える必要があり、また、電
磁石を用いるため大型化する。 Conventionally, free-flying printing hammers using electromagnets have been widely used. However, those using electromagnets have low electromechanical energy conversion efficiency, so it is necessary to provide a large amount of input energy for the required printing energy, and the use of electromagnets increases the size.
そこで近年、電気機械エネルギー変換効率の高
い圧電素子を駆動源とする印字ハンマが考えられ
ている。たとえば特許願昭60−0088610には第３
図に示すような印字ハンマが提案されている。第
３図において、圧電素子１１の伸縮方向の一端１
１ａに力伝達部材１２を接続し、圧電素子１１の
他端１１ｂに取付部材１３の一端１３ａを接続
し、取付部材１３の他端１３ｂに板バネ１４の一
端１４ａを固定し、板ばね１４の他端１４ｂに印
字部材として印字ピン１５を接続し、板ばね１４
の印字ピン１５の接続部１４ｂ付近に係留部１６
を接続し、係留部１６を力伝達部材１２に板ばね
１４で押圧している。 Therefore, in recent years, a printing hammer using a piezoelectric element with high electromechanical energy conversion efficiency as a driving source has been considered. For example, in patent application No. 60-0088610, the third
A printing hammer as shown in the figure has been proposed. In FIG. 3, one end 1 of the piezoelectric element 11 in the expansion and contraction direction
1a, one end 13a of the mounting member 13 is connected to the other end 11b of the piezoelectric element 11, and one end 14a of the leaf spring 14 is fixed to the other end 13b of the mounting member 13. A printing pin 15 is connected to the other end 14b as a printing member, and the leaf spring 14
The mooring part 16 is located near the connecting part 14b of the printed pin 15.
are connected, and the mooring portion 16 is pressed against the force transmitting member 12 by the leaf spring 14.
印字時、圧電素子１１に電圧を印加すると、圧
電素子１１は矢印Ａの方向に高速で伸び、力伝達
部材１２も変位する。その結果板ばね１４に接続
している印字ピン１５と係留部１６は力伝達部材
１２より力を受けて矢印Ｂの方向に加速され、圧
電素子１１の伸び量よりもはるかに長い距離を自
由飛行し、印字ピン１５の先端でドツトを印字す
る。非印字時、係留部１６は板ばね１４の力によ
り、力伝達部材１２に押圧され静止している。 When a voltage is applied to the piezoelectric element 11 during printing, the piezoelectric element 11 expands at high speed in the direction of arrow A, and the force transmitting member 12 is also displaced. As a result, the printing pin 15 and the mooring part 16 connected to the leaf spring 14 receive a force from the force transmission member 12 and are accelerated in the direction of arrow B, flying freely over a far longer distance than the amount of extension of the piezoelectric element 11. Then, a dot is printed using the tip of the printing pin 15. When not printing, the anchoring portion 16 is pressed against the force transmitting member 12 by the force of the leaf spring 14 and remains stationary.
このような圧電素子を用いた自由飛行型の印字
ハンマでは、構造が単純で小型になるという特徴
をもつている。しかしながら非印字時、係留部１
６は板ばね１４の力により、力伝達部材１２に押
圧され静止しているため、印字の際圧電素子が伸
びた時圧電素子の有する機械的エネルギーの一部
しか印字ピンに伝達されない。従つて効率の高い
印字ハンマーとはいえない。 A free-flying printing hammer using such a piezoelectric element is characterized by a simple structure and small size. However, when not printing, mooring part 1
6 is pressed against the force transmitting member 12 by the force of the leaf spring 14 and remains stationary, so that when the piezoelectric element extends during printing, only a portion of the mechanical energy of the piezoelectric element is transmitted to the printing pin. Therefore, it cannot be said to be a highly efficient printing hammer.
（発明の目的）
本発明は、このような従来の欠点を除去せしめ
て、効率の高い印字ハンマを提供することにあ
る。(Object of the Invention) An object of the present invention is to eliminate such conventional drawbacks and provide a highly efficient printing hammer.
（発明の構成）
本発明印字ハンマーは、上記自由飛行型圧電印
字ハンマーにおいて、非印字時に係留部と力伝達
部材との間隔を圧電素子の最大発生変位量より短
かく設定する事を特徴として構成される。(Structure of the Invention) The printing hammer of the present invention is characterized in that, in the free-flying piezoelectric printing hammer described above, the distance between the mooring part and the force transmission member is set to be shorter than the maximum displacement of the piezoelectric element when not printing. be done.
（作用）
本発明の方式は圧電素子に立ち上がりの急峻な
電圧パルスを印加し、圧電素子に接続された力伝
達部材の速度が最大に達した時に係留部材に衝突
する様に構成されている。この場合には圧電素子
の持つ機械的エネルギーの大部分、理想的な場合
には100％が係留部材に伝達される。その結果印
字に必要とされるエネルギーは、従来の方式と比
べてはるかに少ない入力電気エネルギーで達成さ
れることになる。従つて低消費電力のプリンタが
実現できる。(Operation) The system of the present invention is configured to apply a voltage pulse with a steep rise to the piezoelectric element, and collide with the mooring member when the speed of the force transmission member connected to the piezoelectric element reaches the maximum. In this case, most of the mechanical energy of the piezoelectric element, ideally 100%, is transferred to the mooring member. As a result, the energy required for printing is achieved with much less input electrical energy than in conventional systems. Therefore, a printer with low power consumption can be realized.
（実施例）
以下、本発明の実施例について図面を参照して
詳細に説明する。第１図は本発明の第１の実施例
を示す図で圧電素子１１の自由端に力伝達部材が
接続され、圧電素子の他端は取付部材１３に接続
されている。また印字ピン１５と係留部１６が取
りつけられた板ばね１４の一端は取付部材に接続
されている。そして係数部１６と力伝達部材１２
との間隔は静止時に圧電素子の最大発生変位量の
約半分となる様設定されている。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a first embodiment of the present invention, in which a force transmitting member is connected to the free end of a piezoelectric element 11, and the other end of the piezoelectric element is connected to a mounting member 13. Further, one end of the leaf spring 14 to which the printing pin 15 and the anchoring portion 16 are attached is connected to a mounting member. And the coefficient part 16 and the force transmission member 12
The distance between the piezoelectric element and the piezoelectric element is set to be approximately half of the maximum amount of displacement generated by the piezoelectric element when it is at rest.
即ち従来の実施例のように係留部１６と力伝達
部材１２とは静止時に接触しない様な構造となつ
ている。その結果、圧電素子が高速で変位する場
合、圧電素子に蓄積されている機械的エネルギー
の大部分を印字ピンに伝達することが出来る。力
伝達部材１２と圧電素子１１で構成される動力発
生部と板バネ１４、印字ピン１５、係留部材１６
とで構成される印字部との等価的な質量が等し
く、かつ衝突時の反発係数が１の場合には、圧電
素子に蓄積された機械的エネルギーが全て印字部
に伝達されることになり非常に効率の高いプリン
ターが実現できる。 That is, the structure is such that the mooring portion 16 and the force transmitting member 12 do not come into contact with each other when they are at rest, as in the conventional embodiment. As a result, when the piezoelectric element is displaced at high speed, most of the mechanical energy stored in the piezoelectric element can be transferred to the printing pin. A power generating section composed of a force transmitting member 12 and a piezoelectric element 11, a leaf spring 14, a printing pin 15, and a mooring member 16
If the equivalent masses of the printed part and the printed part made up of A highly efficient printer can be realized.
第２図は本発明の第２の実施例を示す図であ
る。同図は第１図に示す構造に更に係留部ガイド
３７が付加されたものである。静止時は板ばね１
４、印字ピン１５及び係留部１６から構成される
印字部が係留部ガイド３７に押しつけられる構造
となつており、係留部先端１６ａは係留部ガイド
３７に設けられた穴を貫通して表面に出ている。
そして係留部先端１６ａと力伝達部材１２との距
離が圧電素子の最大変位量の約半分程度となる様
設定されている。 FIG. 2 is a diagram showing a second embodiment of the present invention. This figure shows the structure shown in FIG. 1 with a mooring guide 37 added thereto. Leaf spring 1 when stationary
4. The printing part consisting of the printing pin 15 and the mooring part 16 is pressed against the mooring part guide 37, and the mooring part tip 16a passes through the hole provided in the mooring part guide 37 and emerges from the surface. ing.
The distance between the mooring portion tip 16a and the force transmitting member 12 is set to be about half of the maximum displacement of the piezoelectric element.
この場合係留部と力伝達部材との距離を常に一
定に保つことが可能となり、長期間の連続印字に
対して安定した印字が実現できる。 In this case, it is possible to always keep the distance between the mooring part and the force transmission member constant, and stable printing can be achieved over a long period of time.
（発明の効果）
本発明によれば、自由飛行型印字ハンマーを用
いたインパクト式プリンタの印字に使用される消
費電力を大巾に低減することが可能となり、工業
的な価値が高い。(Effects of the Invention) According to the present invention, it is possible to greatly reduce the power consumption used for printing by an impact printer using a free-flying printing hammer, and this has high industrial value.
第１図は本発明の第１の実施例を示す図。第２
図は第１図に示す発明を改良した第２の実施例を
示す図。第３図はすでに提案されている印字ハン
マを示す図。
図において、１１……圧電素子、１２……力伝
達部材、１３……取付部材、１４……板ばね、１
５……印字ピン、１６……係留部、３７……係留
部ガイドをそれぞれ示す。
FIG. 1 is a diagram showing a first embodiment of the present invention. Second
This figure shows a second embodiment that is an improvement on the invention shown in FIG. 1. FIG. 3 is a diagram showing a printing hammer that has already been proposed. In the figure, 11...Piezoelectric element, 12...Force transmission member, 13...Mounting member, 14...Plate spring, 1
5... Printing pin, 16... Mooring part, 37... Mooring part guide, respectively.
Claims (1)
続し、前記圧電素子の他端は取付部材の一端に接
続してなる部分と、一端に印字部材および係留部
を接続してなる板バネとを備え、係留部と前記力
伝達部材との間に所定の間隔を保ち、この間隔を
圧電素子の最大発生変位量より小さく設定する事
を特徴とする圧電式印字ハンマ。1 A force transmitting member is connected to one end of the piezoelectric element in the expansion and contraction direction, the other end of the piezoelectric element is connected to one end of the mounting member, and a plate spring is formed by connecting the printing member and the mooring part to one end. A piezoelectric printing hammer, characterized in that a predetermined distance is maintained between the mooring portion and the force transmission member, and the distance is set to be smaller than the maximum amount of displacement generated by the piezoelectric element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28034585A JPS62140853A (en) | 1985-12-13 | 1985-12-13 | Piezoelectric printing hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28034585A JPS62140853A (en) | 1985-12-13 | 1985-12-13 | Piezoelectric printing hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62140853A JPS62140853A (en) | 1987-06-24 |
| JPH0433279B2 true JPH0433279B2 (en) | 1992-06-02 |
Family
ID=17623710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28034585A Granted JPS62140853A (en) | 1985-12-13 | 1985-12-13 | Piezoelectric printing hammer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62140853A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644829A (en) * | 1979-09-19 | 1981-04-24 | Sanko Vinyl Kogyosho:Kk | Desiccation degree indicator of moisture in soil |
-
1985
- 1985-12-13 JP JP28034585A patent/JPS62140853A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62140853A (en) | 1987-06-24 |
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