JPS60124263A - Printing element - Google Patents
Printing elementInfo
- Publication number
- JPS60124263A JPS60124263A JP23232683A JP23232683A JPS60124263A JP S60124263 A JPS60124263 A JP S60124263A JP 23232683 A JP23232683 A JP 23232683A JP 23232683 A JP23232683 A JP 23232683A JP S60124263 A JPS60124263 A JP S60124263A
- Authority
- JP
- Japan
- Prior art keywords
- members
- plate
- piezoelectric body
- transmission
- shaped
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000035882 stress Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 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
- B41J9/00—Hammer-impression mechanisms
- B41J9/26—Means for operating hammers to effect impression
- B41J9/38—Electromagnetic means
-
- 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
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Impact Printers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は印字エレメント、特に圧電体を駆動源として用
（・てドツト印字を行うための印字エレメントに関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing element, and particularly to a printing element for dot printing using a piezoelectric material as a driving source.
第１図は本発明に係わる印字エレメントの構造例を示す
側面図である。金属のベース部制御の内底部に板状部材
を介して連結している接Ｐ；部材２と、ベース部材１の
上部の間隙に設けである金属の接続部材３とに、それぞ
れ下端および上端を固溶しである柱状の圧電体４が、印
字動作の駆動弁である。ペース部拐ｌの上方に設けた金
属の回前１部月９および１０は、いずれも圧電体４がら
与えられる変位に応じて、てこ（レバー）として作動し
変位を拡大伝達するためのものである、接続部材３ｉ−
１、板状部材を介し、更に板状の結合部月５および６を
介して可動部月９およ０・１００下瑞部に連結して（・
る。また可動部材９および１０の各下端部は、それぞれ
結合部材５および６がら所定の間隙をお（・て設けた板
状の結合部材７および８を介して、ベース部材１の上端
部に連結しである。FIG. 1 is a side view showing an example of the structure of a printing element according to the present invention. A contact P is connected to the inner bottom of the metal base control via a plate-like member; the lower and upper ends are connected to the member 2 and the metal connecting member 3 provided in the gap above the base member 1, respectively. The columnar piezoelectric body 4, which is a solid solution, is a driving valve for printing operation. The metal front parts 9 and 10 provided above the pace part 1 operate as levers in response to the displacement given by the piezoelectric body 4 to magnify and transmit the displacement. There is a connecting member 3i-
1. Connect to the movable parts 9 and 0.100 lower part through the plate-like member and further through the plate-like connecting parts 5 and 6.
Ru. Further, the lower end portions of the movable members 9 and 10 are connected to the upper end portion of the base member 1 via plate-shaped connecting members 7 and 8, which are provided with a predetermined gap between the connecting members 5 and 6, respectively. It is.
可動部材９および１０の各上端部には金属板の伝達部材
１１および１２の一端が固着してあり、伝達部材１１お
よび１２の各他端は可動部材１３の所定箇所にそれぞれ
固着しである。可動部材１３の先端部には、ドツト印字
を行うための金属棒のワイヤ１４が取付けられている。One end of transmission members 11 and 12 made of metal plates is fixed to the upper end of each of the movable members 9 and 10, and the other end of each of the transmission members 11 and 12 is fixed to a predetermined position of the movable member 13, respectively. A metal bar wire 14 for dot printing is attached to the tip of the movable member 13.
圧電体４に駆動電圧を印加したとき、電歪効果により圧
電体４の長さが伸びて寸法歪を発生し、接続部材３を押
上げる。これに応じて生じた変位は結合部月５および６
を介してそれぞれ可動部材９および１０へ導かれ、可動
部材９および１０はおのおのレバーとして作動し各上端
部に破線矢印Ａおよびｎで示す向きの変位を生ずる。こ
の互（・に逆向きの二つの変位が伝達部材１１および１
２を介して可動部材１３に伝達され回転運動を発生させ
、これに伴ってワイヤ１４が破線矢印Ｃの向きに運動し
てドツト印字動作を行う。When a driving voltage is applied to the piezoelectric body 4, the length of the piezoelectric body 4 is extended due to the electrostrictive effect, causing dimensional distortion, and the connecting member 3 is pushed up. The corresponding displacements are the joints 5 and 6.
are guided to movable members 9 and 10, respectively, which act as levers to produce displacements in the directions indicated by dashed arrows A and n at their respective upper ends. These two displacements in opposite directions are the transmission members 11 and 1.
The rotational movement is transmitted to the movable member 13 via the wire 2, and the wire 14 moves in the direction of the broken line arrow C to perform a dot printing operation.
従来の印字ζレメントでは、可動部材９および１０に生
じた変位を円滑に可動部材１３へ伝達するために、伝達
材部１１および１２の板厚を薄くして、変位伝達時に伝
達部材１１および１２が円弧状の単純曲げを生ずるよう
にしである。しかしこのとき同時に、伝達部材１１およ
び１２にその動作には不要な高次モードの機械的振動を
生じ、これに伴って過大外応力が作用して、繰返し動作
中に伝達部材１１および１２が折損破壊を起し易いとい
う欠点がある。In the conventional printing ζ element, in order to smoothly transmit the displacement generated in the movable members 9 and 10 to the movable member 13, the plate thickness of the transmitting material parts 11 and 12 is made thinner, and the transmitting members 11 and 12 are made thinner when the displacement is transmitted. is designed to produce a simple arc-shaped bend. However, at the same time, high-order mode mechanical vibrations unnecessary for the operation of the transmission members 11 and 12 occur, and excessive external stress acts on the transmission members 11 and 12, causing the transmission members 11 and 12 to break during repeated operation. It has the disadvantage of being easily destroyed.
第２図は、従来の印字エレメントの動作時における伝達
部材１１および１２の屈曲状態を例示するための部分側
面図である。動作時に、伝達部材１１および１２には、
破線で図示したような円弧状の郡純曲げと共に、高次モ
ードの不要振動による屈曲を生じ、両者が重畳して実線
で図示したような複雑な形状の屈曲になる。このような
複雑屈曲に伴って作用する応力−の大きさは、単純曲げ
のみの場合と比べてかなり増大する。通常、その応力の
大きさが伝達部材１１および１２の材料の疲労限度を超
える大きさになり、繰返し動作中に折損破壊を起す原因
となる。FIG. 2 is a partial side view illustrating the bent state of the transmission members 11 and 12 during operation of a conventional printing element. In operation, the transmission members 11 and 12 include:
In addition to arc-shaped random bending as shown by the broken line, bending occurs due to unnecessary vibrations in higher-order modes, and both are superimposed to form a complicated bending shape as shown by the solid line. The magnitude of the stress that acts with such complex bending increases considerably compared to the case of only simple bending. Usually, the magnitude of the stress exceeds the fatigue limit of the material of the transmission members 11 and 12, causing breakage and fracture during repeated operations.
本発明の目的は、上述の欠点を除去し動作中に板状の伝
達部材が高次モードの不要振動を起さぬようにして伝達
部材の折損破壊を防止した印字エレメントを提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a printing element that eliminates the above-mentioned drawbacks and prevents the plate-shaped transmission member from generating unnecessary vibrations in higher-order modes during operation, thereby preventing breakage and destruction of the transmission member. .
本発明のエレメントは、印加電圧に応答して寸法歪を発
生する圧電体と、該圧電体の一端を固定したベース部劇
と、おのおの前記圧電体の他端および前記ペース部側に
板状部劇を介して接続しており前記圧電体から前記板状
部材を介して与えられる前記寸法歪に応答してそれぞれ
互（・に逆向きの第一および第二の角変位を生ずる第一
および第二の可動部材と、それぞれ一端を前記第一およ
び第二の可動部材に固着した板状の１４−および第二の
伝達部材と、該第−および第二の伝達部材の各他端が固
着してあり両者を介して伝達される前記第一および第二
の角変位に応答して第三の角変位を生じて印字用のワイ
ヤに印字動作を与える第三（７’１ＥＴｆ＋Ｉ＋ａ（赫
Ｊ−ｉ−イ曲Ｊｔイ＃ｈｔｌｈ＝ｐａ’ｔニーに？７ド
ｍ＝の伝達部材のうちの少くとも一方の板厚の板長に対
する比が０．０５以上である。The element of the present invention includes a piezoelectric body that generates dimensional distortion in response to an applied voltage, a base portion to which one end of the piezoelectric body is fixed, and a plate-shaped portion on the other end of the piezoelectric body and the pace portion side. first and second first and second angular displacements that are connected to each other through the piezoelectric material and that cause first and second angular displacements in opposite directions to each other in response to the dimensional strain applied from the piezoelectric body through the plate member; a second movable member, a plate-shaped member 14 whose one end is fixed to the first and second movable members, and a second transmission member, each other end of which is fixed. A third angular displacement is generated in response to the first and second angular displacements transmitted through both of the wires, and a third angular displacement (7'1ETf+I+a (赫J-i - The ratio of the plate thickness to the plate length of at least one of the transmitting members of the A curve Jt A #htlh=pa't knee and the 7 do m= is 0.05 or more.
次に図面を参照して本発明の詳細な説明する。Next, the present invention will be described in detail with reference to the drawings.
第３図および第４図はそれぞれ本発明の詳細な説明する
ための部分斜視図および特性図である。3 and 4 are a partial perspective view and a characteristic diagram, respectively, for explaining the present invention in detail.
板状の伝達部材１１および１２のうちのいずれか ・一
方、例えば第３図に示すごとく伝達部材１２の厚みをｔ
２両端部接合箇所間の長さを１とする。Either of the plate-shaped transmission members 11 and 12. On the other hand, for example, as shown in FIG. 3, the thickness of the transmission member 12 is t.
The length between the two end joints is 1.
第４図は、この伝達部材１２（あるいは１１）が金属板
でありその金属側斜のヤング率が２Ｘ１０’ＫＰ／■２
の場合、変位伝達時に伝達部材１２（あるいは１１）が
不微振動を起さな（・寸法領域を示す。すなわち、伝達
部材１２（あるいは１１）の長さ１が４〜１０簡の範曲
内にある場合に、不要振動を生じないよう外厚みｔの最
小値を実験（あるいはシミュレー７、ン）でめると、実
線Ｍで示した折線が得られる。不ＪＡ！振動を起さない
ような厚みｔの範囲は斜線でハツチングを施した領域で
あり（ここで、○印は不要振動を生じない寸法組み合わ
せ、Ｘ印は不微振動を生ずる寸法組合わせ。）厚みｔと
長さｌとの寸法比ｔ ／ １が０．０５に等しくなる寸
法組合せを示す做線りを引いてみると、ハツチングを施
した領域は、破線りよりも上方の領域、すなわち式ｔ／
１≧０．０５を満足する領域と実質的に一致する。Figure 4 shows that the transmission member 12 (or 11) is a metal plate, and the Young's modulus of the metal side is 2X10'KP/■2
In this case, the transmission member 12 (or 11) does not cause micro-vibration during displacement transmission (indicates a dimensional range. In other words, the length 1 of the transmission member 12 (or 11) is within a range of 4 to 10 pieces. When the minimum value of the outer thickness t is determined experimentally (or by simulation 7) to avoid unnecessary vibrations, a broken line shown by the solid line M is obtained. The range of thickness t is the area hatched with diagonal lines. When drawing a line indicating the combination of dimensions where the dimension ratio t/1 is equal to 0.05, the hatched area is the area above the dashed line, that is, the area where the formula t/1 is equal to 0.05.
It substantially coincides with the area satisfying 1≧0.05.
本発明のエレメントは、伝達部拐１１および１２のうち
の少くとも一方の寸法比ｔ／ｌを０．０５以上に選定し
て動作時の不要振動が発生しないようにし、従来のよう
な不要振動に伴う過大応力が作用することを防ぎ伝達部
利１１および１２が折損破壊を起さぬようにしたもので
ある。伝達部材１１および１２は、可動部拐９，１０お
よび１３と共にリンク状に連結しているので、少くとも
いずれか一方の寸法比ｔ ／ １を０．０５以上にして
不要振動発生を阻止しておけは、他力の不要振動も阻止
される。In the element of the present invention, the dimensional ratio t/l of at least one of the transmission parts 11 and 12 is selected to be 0.05 or more to prevent unnecessary vibrations from occurring during operation. This prevents excessive stress from acting on the transmission parts 11 and 12, thereby preventing breakage and breakage of the transmission parts 11 and 12. Since the transmission members 11 and 12 are linked together with the movable parts 9, 10 and 13, the dimensional ratio t/1 of at least one of them is set to 0.05 or more to prevent unnecessary vibrations from occurring. The basin also prevents unnecessary vibrations caused by other forces.
本発明の一実施例として、伝達部羽１１および１２の相
和として作用応力に対する疲労限度が４０ ＫＰ／Ｓ’
ｌｌ＋’ 移変の鋼材を使用した場合を説明する。例え
ば、第３図に示す伝達部材１２の両端部接合箇所間の長
さｌを７．５８とし、伝達部材１２の厚みｔを０．４５
ｗｍとして、寸法比ｔ ／ ｌが０．０６に力るよう選
定したとき、動作時に伝達部側１２は不要振動を起さず
、作用する最大応力をめると約３０ Ｋｐ／＋ｎｍ”で
あり、羽料の疲労限度以下の大きさなので、繰返し動作
させても折損破壊を生じない。しかし、厚みｔを薄くシ
て寸法比ｔ ／ １を０．０５以下にした場合、例えば
長さ１は７．５調のまま厚みｔを０．３５ｗｍに（従っ
て寸法比ｔ／ｌは０．０４７になり０．０５以下である
）にした場合には、動作中に伝達部１２は不要振動を起
し作用する最大応力は約５３に９７ｍｍ”に達し、材料
の疲労限度を超えるため繰返し動作時に折排破壊を起す
確率が太き（・。As an embodiment of the present invention, the fatigue limit for the combined stress of the transmission part vanes 11 and 12 is 40 KP/S'.
A case where steel material with ll+' transition is used will be explained. For example, the length l between the two ends of the transmission member 12 shown in FIG. 3 is 7.58, and the thickness t of the transmission member 12 is 0.45.
When wm is selected so that the dimensional ratio t/l is 0.06, the transmission part side 12 does not cause unnecessary vibration during operation, and the maximum stress acting is approximately 30 Kp/+nm. Since the size is below the fatigue limit of the feather, breakage will not occur even if it is operated repeatedly.However, if the thickness t is made thinner and the dimension ratio t/1 is set to 0.05 or less, for example, the length 1 becomes If the thickness t is set to 0.35 wm while maintaining the 7.5 tone (therefore, the dimension ratio t/l is 0.047, which is less than 0.05), the transmission section 12 will cause unnecessary vibration during operation. The maximum stress acting on the material reaches approximately 53 to 97 mm, which exceeds the fatigue limit of the material, so there is a high probability of breakage during repeated operations.
以上に説明したごとく、本発明には板状の伝達部利が動
作時に不要振動を起さぬようにして約返し動作時におけ
る伝達部材の折相破壊を防止した印字エレメントが得ら
れるという効果がある。As explained above, the present invention has the effect that it is possible to obtain a printing element in which the plate-shaped transmission member does not cause unnecessary vibration during operation, and prevents phase failure of the transmission member during the about-turn operation. be.
第１図は本発明に係わる印字エレメントの構造例を示す
側面図、第２図は従来の印字エレメントの動作状態を説
明するための部分側面図、第３図および第４図はそれぞ
れ本発明の詳細な説明するための部分斜視図および特性
図である。FIG. 1 is a side view showing an example of the structure of a printing element according to the present invention, FIG. 2 is a partial side view illustrating the operating state of a conventional printing element, and FIGS. They are a partial perspective view and a characteristic diagram for detailed explanation.
Claims (1)
体の一端を固定したベース部材と、おのおの前記圧電体
の他端および前記ベース部材に板状部材を介して接続し
ており前記圧電体から前記板状部材を介して与えられる
前記寸法歪に応答してそれぞれ互いに逆向きの第一およ
び第二の角変位を生ずる第一および第二の可動部材と、
それぞれ一端を前記第一および第二の可動部材に固着し
た板状の第一および第二の伝達部材と、該第−および第
二の伝達部材の各他端が固着してあり両者を介して伝達
される前記第一および第二の角変位に応答して第三の角
変位を生じて印字用のワイヤに印字動作を与える第三の
可動部材とを備えており、曲＠−笛−松士γド笛−の伝
襠布（廿のへもの／」ン（ｋ叡−力の板厚の板長に対す
る比が０．０５以上であることを％徴とする印字ユニッ
ト。A piezoelectric body that generates dimensional distortion in response to an applied voltage, a base member having one end of the piezoelectric body fixed, each connected to the other end of the piezoelectric body and the base member via a plate-like member, and first and second movable members that respectively produce first and second angular displacements in opposite directions in response to the dimensional strain applied from the piezoelectric body via the plate-like member;
plate-shaped first and second transmission members each having one end fixed to the first and second movable members; the other ends of the first and second transmission members being fixed to each other; and a third movable member that generates a third angular displacement in response to the transmitted first and second angular displacements and provides a printing operation to the printing wire, A printing unit whose percentage sign is that the ratio of the force to the plate thickness is 0.05 or more.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23232683A JPS60124263A (en) | 1983-12-09 | 1983-12-09 | Printing element |
| CA000447850A CA1218561A (en) | 1983-02-25 | 1984-02-20 | Differential lever actuator including differentially force-transmitting members which are not liable to break |
| US06/582,667 US4518887A (en) | 1983-02-25 | 1984-02-23 | Differential lever actuator including differentially force-transmitting members which are not liable to break |
| BR8400913A BR8400913A (en) | 1983-02-25 | 1984-02-24 | DIFFERENTIAL LEVER DRIVER INCLUDING DIFFERENTIAL ELEMENTS OF POWER TRANSMITTERS NOT SUBJECT TO BREAKING |
| DE8484101948T DE3482664D1 (en) | 1983-02-25 | 1984-02-24 | DIFFERENTIAL DRIVE FOR ONE LEVER. |
| AU25036/84A AU559869B2 (en) | 1983-02-25 | 1984-02-24 | Differential lever actuator |
| EP84101948A EP0117547B1 (en) | 1983-02-25 | 1984-02-24 | Differential lever actuator |
| KR8400963A KR890003340B1 (en) | 1983-02-25 | 1984-02-25 | Differential lever actuator including differentially force-transmitting members which are not liable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23232683A JPS60124263A (en) | 1983-12-09 | 1983-12-09 | Printing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60124263A true JPS60124263A (en) | 1985-07-03 |
| JPH0376227B2 JPH0376227B2 (en) | 1991-12-04 |
Family
ID=16937439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23232683A Granted JPS60124263A (en) | 1983-02-25 | 1983-12-09 | Printing element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60124263A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166035U (en) * | 1986-04-09 | 1987-10-21 |
-
1983
- 1983-12-09 JP JP23232683A patent/JPS60124263A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166035U (en) * | 1986-04-09 | 1987-10-21 | ||
| JPH058135Y2 (en) * | 1986-04-09 | 1993-03-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0376227B2 (en) | 1991-12-04 |
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