JPS58118024A - Tracking device - Google Patents
Tracking deviceInfo
- Publication number
- JPS58118024A JPS58118024A JP57000420A JP42082A JPS58118024A JP S58118024 A JPS58118024 A JP S58118024A JP 57000420 A JP57000420 A JP 57000420A JP 42082 A JP42082 A JP 42082A JP S58118024 A JPS58118024 A JP S58118024A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric element
- bimorph piezoelectric
- flexible wiring
- wiring sheet
- tracking device
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
- G11B5/588—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads
- G11B5/592—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads using bimorph elements supporting the heads
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
発明の技術分野
本発明け、バイモルフ圧電素子を用いたトラッキング装
置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an improvement in a tracking device using a bimorph piezoelectric element.
発明の技術的背景
バイモルフ圧電素子は一対の電気的に分極された圧電セ
ラミック素子を積層結合して構成される。このようなバ
イモルフ圧電素子は、一端を固定し他端を自由に曲げら
れるようにし、適当な電圧を加えることにより、その自
由端を偏向せしめることができる。このとき、バイモル
フ圧電素子の偏向量及びその方向け、上記印加電圧の大
きさ及び極性を変えることによって制御できる。そこで
このような印加電圧に応じて偏向するバイモルフ圧電素
子を用いれば、たとえば、ビデオテープレコーダ（ＶＴ
Ｒ）等の）ラッキング制御装置全構成することができる
っ第１図は、従来のトラッキング装置の概略構成を示す
斜視図である。図中、ノ、２は、ＰＺＴ系等の圧電セラ
ミック材料よりなる圧電セラミツク素子で、これらの素
子１，２の各主面には、電極３，４及び電極５，６がそ
れぞれ被着されている。そして、上記圧電セラミック素
子１゜２のそれぞれの分極方向を同一方向にそろえ、接
着剤を介して積層結合することによりバイモルフ圧電素
子７が形成されている。バイモルフ圧電素子７は、その
一端がＶＴＲの回転ドラム内の支持台８に固定され、他
方の自由端に、ビデオヘッド９が装着される。しかして
、電極３゜６及び電極４，５がそれぞれ同一極性になる
ように端子１０．１１を介してバイモルフ圧電素子７に
所定の偏向電圧を印加することにより、前記ビデオヘッ
ド９がテープ上のトラックを適切に走査するように制御
することができる。Technical Background of the Invention A bimorph piezoelectric element is constructed by laminating and bonding a pair of electrically polarized piezoelectric ceramic elements. Such a bimorph piezoelectric element has one end fixed and the other end freely bendable, and the free end can be deflected by applying an appropriate voltage. At this time, it can be controlled by changing the amount and direction of deflection of the bimorph piezoelectric element, and the magnitude and polarity of the applied voltage. Therefore, if such a bimorph piezoelectric element that deflects according to the applied voltage is used, it can be used, for example, in a video tape recorder (VT
FIG. 1 is a perspective view showing the schematic structure of a conventional tracking device. In the figure, numerals 2 and 2 are piezoelectric ceramic elements made of a piezoelectric ceramic material such as PZT, and electrodes 3 and 4 and electrodes 5 and 6 are adhered to the main surfaces of these elements 1 and 2, respectively. There is. The bimorph piezoelectric element 7 is formed by arranging the polarization directions of the piezoelectric ceramic elements 1 and 2 in the same direction and stacking them together via an adhesive. One end of the bimorph piezoelectric element 7 is fixed to a support base 8 within a rotating drum of a VTR, and a video head 9 is attached to the other free end. By applying a predetermined deflection voltage to the bimorph piezoelectric element 7 via the terminal 10.11 so that the electrode 3.6 and the electrodes 4 and 5 have the same polarity, the video head 9 Tracks can be controlled to scan appropriately.
このとき、ビデオヘッド９から取シだされる信号はリー
ド線、１２を用いて引きだされる。リード線１２け、バ
イモルフ圧電素子７の固定端部まで長く引きだされ、回
路と結合される。At this time, the signal taken out from the video head 9 is taken out using a lead wire 12. Twelve lead wires are drawn out to the fixed end of the bimorph piezoelectric element 7 and connected to the circuit.
背景技術の問題点
第１図の構成では、ビデオヘッド９からのリード線１２
は、バイモルフ圧電素子７の土庄面上をはわせて長く引
き出されているため、組立作業中リード線１２を引っか
ける等のおそれがあり、細心の社章を要していた。Problems with the Background Art In the configuration shown in FIG. 1, the lead wire 12 from the video head 9
Since the lead wire 12 is extended over the top surface of the bimorph piezoelectric element 7 for a long time, there is a risk that the lead wire 12 may be caught during assembly.
また、バイモルフ圧電素子７は、回転ドラム中に装着さ
れるため、リード線１２は固定することが望丑れていた
。Further, since the bimorph piezoelectric element 7 is installed in a rotating drum, it is desirable that the lead wire 12 be fixed.
発明の目的
本発明は、上記事情を考慮してなされたもので、その目
的とするところは、ビデオヘッドから引きだされるリー
ド線をバイモルフ圧電素子と一体化して組立て作業工程
を簡単にしたドラッギング装置を提供することにある。OBJECTS OF THE INVENTION The present invention has been made in consideration of the above circumstances, and its object is to provide a dragging method that simplifies the assembly process by integrating a lead wire drawn out from a video head with a bimorph piezoelectric element. The goal is to provide equipment.
発明の概要
本発明は、バイモルフ圧電素子の自由端部に取付けられ
たビデオヘッドからのリード線として、フレキシブル配
線シートを利用し、これをバイモルフ圧電素子と一体化
したことを特徴とする。Summary of the Invention The present invention is characterized in that a flexible wiring sheet is used as a lead wire from a video head attached to the free end of a bimorph piezoelectric element, and is integrated with the bimorph piezoelectric element.
発明の効果
本発明によれば、ビデオヘッドからのリード線を短いも
のとすることができ、しかもこれをバイモルフ圧電素子
と一体的に貼シ合せて組立てることができるから、組立
て作業が非常に簡単になる。Effects of the Invention According to the present invention, the lead wire from the video head can be made short, and it can be assembled by bonding it together with the bimorph piezoelectric element, making the assembly work very simple. become.
発明の実施例
第２図は本発明の一実施例を示すもので、第１図と対応
する部分には第１図と同一符号を付しである。この実施
例では、バイモルフ圧電素子７は、２ケの圧電セラミッ
ク素子１，２を分極方向をそろえ、中間層にポリイミド
やポリエステル等よシなるフレキシブル配線シート１３
をはさんで、それぞれ接着剤を用いて積層結合して構成
されている。Embodiment of the Invention FIG. 2 shows an embodiment of the present invention, and parts corresponding to those in FIG. 1 are given the same reference numerals as in FIG. In this embodiment, the bimorph piezoelectric element 7 has two piezoelectric ceramic elements 1 and 2 aligned in their polarization directions, and a flexible wiring sheet 13 made of polyimide, polyester, etc. as an intermediate layer.
They are stacked and bonded together using adhesive.
バイモルフ圧電素子７の自由端部にはビデオヘッド９が
装着される。ビデオヘッド９から引きだされた端子線１
５は中間層としてはさんだフレキシブル配線シート１３
内に配設された導体配線１４と半田付は等で接合される
。従ってビデオヘッド９からの信号は、フレキシブル配
５−
紳シート１３内の導体配線１４によってバイモルフ圧電
素子７の固定端部゛まで引きだされることになる。A video head 9 is attached to the free end of the bimorph piezoelectric element 7. Terminal wire 1 pulled out from video head 9
5 is a flexible wiring sheet 13 sandwiched as an intermediate layer.
The conductor wiring 14 disposed inside is joined by soldering or the like. Therefore, the signal from the video head 9 is led out to the fixed end of the bimorph piezoelectric element 7 by the conductor wiring 14 in the flexible wiring sheet 13.
本実施例によれば以下のような効果かえられる。According to this embodiment, the following effects can be obtained.
（１） ビデオヘッドからのり一ド綜を短くできる。(1) The distance from the video head can be shortened.
（２） バイモルフ圧電素子とリード線が一体に形成
されるため、作業工程が簡便になる。(2) Since the bimorph piezoelectric element and the lead wire are integrally formed, the work process is simplified.
（３） 中間層としてフレキシブル配線シート、即ち
、ポリイミドやポリエステル等よりなる弾性体をはさむ
ことによ勺、バイモルフ圧電素子の駆動時に発生する不
要振動を抑圧することができる。(3) By sandwiching a flexible wiring sheet, that is, an elastic material made of polyimide, polyester, etc., as an intermediate layer, it is possible to suppress unnecessary vibrations that occur when the bimorph piezoelectric element is driven.
上記実施例では、フレキシブル配線シートをバイモルフ
圧電素子を構成する２ケの圧電セラミック素子の中間層
としてはさんだ構造の場合で説明したが、第３図に示す
ようにバイモルフ圧電素子の上面にフレキシブル配線シ
ー）ｋ貼υ付け、その導体部と自由端部に取付けられた
＝６＝
ビデオヘッドの端子線と接合してもよい。フレキシブル
配線シートは上面でなく下面でもよいことは勿論であシ
、またバイモルフ圧電素子の主平面の全体でなく、一部
に貼υ付けたものであってもよい。その他、本発明の主
旨を逸脱しない範［Ｉｎ ’−（１’種々変形して実施
できる。In the above embodiment, the flexible wiring sheet is sandwiched between two piezoelectric ceramic elements constituting a bimorph piezoelectric element as an intermediate layer, but as shown in FIG. C) k Paste υ, attached to its conductor and free end = 6 = May be connected to the terminal wire of the video head. Of course, the flexible wiring sheet may be attached to the lower surface instead of the upper surface, and may also be attached to a part of the main plane of the bimorph piezoelectric element instead of the entire main plane. In addition, various modifications can be made to the range [In'-(1') without departing from the spirit of the present invention.
第１図は従来のバイモルフ圧電素子を用いたトラッキン
グ装置の概略構成を示す斜視図、第２図は、本発明の一
笑施例の構成を示す斜視図、第３図は本発明の他の実施
例の構成を示す斜視図である。
１．２・・・圧電セラミック素子、３，４，５゜６・・
・電極、７・・・バイモルフ圧電素子、９・・・ビデオ
ヘッド、１３・・・フレキシブル配線シート、１４・・
・導体配線。
出願人代理人 弁理士 鈴 江 武 彦矛１図FIG. 1 is a perspective view showing a schematic configuration of a tracking device using a conventional bimorph piezoelectric element, FIG. 2 is a perspective view showing a configuration of a simple embodiment of the present invention, and FIG. 3 is a perspective view showing another embodiment of the present invention. FIG. 2 is a perspective view showing an example configuration. 1.2...Piezoelectric ceramic element, 3,4,5゜6...
- Electrode, 7... Bimorph piezoelectric element, 9... Video head, 13... Flexible wiring sheet, 14...
・Conductor wiring. Applicant's agent Patent attorney Takeshi Suzue Hikoyori Figure 1
Claims (3)
ルフ圧電素子の一端を固定保持し、他端を印加電圧に応
じて偏向する自由端とし、その自由端部に信号の記録ま
たは再生を行うヘッドを装着して構成されるトラッキン
グ装置において、前記ヘッドのリード線としてフレキシ
ブル配線シートを用いたことを特徴とするトラッキング
装置。(1) A head that fixes and holds one end of a bimorph piezoelectric element formed by bonding multiple piezoelectric ceramic elements, and uses the other end as a free end that deflects according to the applied voltage, and records or reproduces a signal at the free end. What is claimed is: 1. A tracking device including a flexible wiring sheet used as a lead wire of the head.
圧電素子の中間層として積層結合したことを特徴とする
特許請求の範囲第１項記載のトラッキング装置。(2) The tracking device according to claim 1, wherein the flexible wiring sheet is laminated and bonded as an intermediate layer of a bimorph piezoelectric element.
電素子の上面もしくけ下面または両面に貼シ合わせたこ
と全特徴とする特許請求の範囲第１項記載のトラッキン
グ装置。(3) The tracking device according to claim 1, wherein the flexible wiring sheet is pasted on the upper surface, the lower surface, or both surfaces of the bimorph piezoelectric element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57000420A JPS58118024A (en) | 1982-01-06 | 1982-01-06 | Tracking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57000420A JPS58118024A (en) | 1982-01-06 | 1982-01-06 | Tracking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58118024A true JPS58118024A (en) | 1983-07-13 |
Family
ID=11473305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57000420A Pending JPS58118024A (en) | 1982-01-06 | 1982-01-06 | Tracking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58118024A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152401A1 (en) * | 1998-09-16 | 2001-11-07 | Matsushita Electric Industrial Co., Ltd. | Head support mechanism, information recording / reproducing apparatus, and method of manufacturing head support mechanism |
-
1982
- 1982-01-06 JP JP57000420A patent/JPS58118024A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152401A1 (en) * | 1998-09-16 | 2001-11-07 | Matsushita Electric Industrial Co., Ltd. | Head support mechanism, information recording / reproducing apparatus, and method of manufacturing head support mechanism |
| EP1152401A4 (en) * | 1998-09-16 | 2003-01-15 | Matsushita Electric Ind Co Ltd | Head support mechanism, information recording / reproducing apparatus, and method of manufacturing head support mechanism |
| US6943990B1 (en) | 1998-09-16 | 2005-09-13 | Matsushita Electric Industrial Co., Ltd. | Head support mechanism, information recording/reproducing apparatus, and method of manufacturing head support mechanism |
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