JPH11121827A - Mounting structure of piezoelectric transformer power supply - Google Patents
Mounting structure of piezoelectric transformer power supplyInfo
- Publication number
- JPH11121827A JPH11121827A JP9285618A JP28561897A JPH11121827A JP H11121827 A JPH11121827 A JP H11121827A JP 9285618 A JP9285618 A JP 9285618A JP 28561897 A JP28561897 A JP 28561897A JP H11121827 A JPH11121827 A JP H11121827A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric transformer
- power supply
- transformer element
- mounting structure
- insulating member
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、圧電セラミック矩
形板を用いた圧電トランス素子を電源回路基板に接続す
るための圧電トランス電源の実装構造に関する。The present invention relates to a mounting structure of a piezoelectric transformer power supply for connecting a piezoelectric transformer element using a piezoelectric ceramic rectangular plate to a power supply circuit board.
【０００２】[0002]
【従来の技術】圧電セラミック矩形板の応用の一つとし
て圧電トランスが知られているが、従来の巻線形の電磁
トランスに比べて、単純な構造で、小型・低背化が可能
であり、近年高電圧発生装置として液晶デスプレイのバ
ックライト点灯装置や複写機のトナー帯電用などに、そ
の用途が検討されてきた。2. Description of the Related Art A piezoelectric transformer is known as one of the applications of a piezoelectric ceramic rectangular plate. However, it has a simpler structure and can be made smaller and lower in height than a conventional wound-type electromagnetic transformer. In recent years, its use has been studied as a high voltage generator for a backlight lighting device of a liquid crystal display, a toner charging device for a copying machine, and the like.
【０００３】圧電振動矩形板の材料としては、セラミッ
ク、ニオブ酸リチウム単結晶を用いることが多く、一般
的な構造として図４の概略図に示すように圧電トランス
素子１１の表面又は側面にそれぞれ電力を入力、出力で
きる入力電極１２ａ，１２ｂと出力電極１３ａを形成し
て圧電トランスとし、電力の取り出しは、この圧電トラ
ンス素子１１上に形成された電極にリード線１２ｃ，１
２ｄ，１３ｄを直接はんだ付け等の手段で取り出し、図
５のように導体パターンが形成された可撓性絶縁部材１
７を介したり、又は回路基板１４上の導体パターンに直
接接続し、圧電トランス素子駆動用電源回路部品と電気
的に接続していた。As a material of the piezoelectric vibrating rectangular plate, ceramic or lithium niobate single crystal is often used, and as a general structure, as shown in a schematic diagram of FIG. The electrodes formed on the piezoelectric transformer element 11 are formed by forming input electrodes 12a and 12b capable of inputting and outputting a signal and an output electrode 13a to form a piezoelectric transformer.
2d and 13d are taken out by means such as direct soldering or the like, and the flexible insulating member 1 on which a conductor pattern is formed as shown in FIG.
7 or directly to the conductor pattern on the circuit board 14 to electrically connect to the piezoelectric transformer element driving power supply circuit components.
【０００４】次に、ケース１５による圧電トランスの固
定と、高電圧を絶縁する実装構造が一般的に採用されて
いた。Next, a mounting structure for fixing the piezoelectric transformer by the case 15 and insulating high voltage has been generally adopted.
【０００５】[0005]
【発明が解決しようとする課題】周知のように、圧電ト
ランス素子電極からのリード線は、圧電トランスの機械
振動を阻害しないように、たとえばリボン状導体、細径
撚線など柔軟な線材を用いることが必要であり、また、
圧電トランスの支持も振動による変位のない節点近傍で
行うのが一般的である。As is well known, a lead wire from a piezoelectric transformer element electrode is made of a flexible wire such as a ribbon-shaped conductor or a small-diameter stranded wire so as not to hinder the mechanical vibration of the piezoelectric transformer. Need to be
In general, the piezoelectric transformer is also supported near a node where there is no displacement due to vibration.
【０００６】したがって、リード線の材質、引き回し、
圧電トランスの支持方法は、圧電トランスの特性を左右
する大きな要因となり、設計、製造方法に種々の工夫が
なされている。Therefore, the material of the lead wire, the routing,
The method of supporting the piezoelectric transformer is a major factor influencing the characteristics of the piezoelectric transformer, and a variety of design and manufacturing methods have been devised.
【０００７】本発明の目的は、圧電振動子の機械振動を
阻害しないで、圧電トランス素子を極めて容易に電源回
路基板に接続できると共に、特性に優れ、接続構造及び
実装構造全体の小型化を図り、コスト的にも有利な圧電
トランス電源の実装構造を提供することである。SUMMARY OF THE INVENTION It is an object of the present invention to connect a piezoelectric transformer element to a power supply circuit board very easily without obstructing the mechanical vibration of the piezoelectric vibrator, to achieve excellent characteristics, and to reduce the size of the entire connection structure and mounting structure. Another object of the present invention is to provide a piezoelectric transformer power supply mounting structure that is cost effective.
【０００８】[0008]
【課題を解決するための手段】本発明によれば、圧電ト
ランス素子１１と圧電トランス素子１１を駆動するため
の電源回路部品を搭載した回路基板１４との間を電気的
に接続するために、複数の帯状導体１６を一面に設けた
可撓性絶縁部材１７を、帯状導体１６面が圧電トランス
素子１１の電極１２，１３面と接続可能な形状に成形
し、圧電トランス素子１１を覆うように配設してなる圧
電トランス電源の実装構造が、得られる。可撓性絶縁部
材１７の帯状導体１６面において、圧電トランス素子１
１の電極１２，１３面との接触部はバネ性の導体端子２
２で構成され、可撓性絶縁部材１７は複数の帯状導体１
６及びバネ性の導体端子２２と共に、一体成形される。
圧電トランス素子１１は、その振動節点において可撓性
絶縁部材１７と柔軟な接着剤で弾性支持される。According to the present invention, in order to electrically connect between a piezoelectric transformer element 11 and a circuit board 14 on which a power supply circuit component for driving the piezoelectric transformer element 11 is mounted, A flexible insulating member 17 having a plurality of strip-shaped conductors 16 provided on one surface is formed into a shape such that the strip-shaped conductor 16 can be connected to the electrodes 12 and 13 of the piezoelectric transformer element 11 so as to cover the piezoelectric transformer element 11. The mounting structure of the piezoelectric transformer power supply thus arranged is obtained. On the surface of the strip-shaped conductor 16 of the flexible insulating member 17, the piezoelectric transformer element 1
The contact portion between the first and second electrodes 12 and 13 is a conductive terminal 2 having spring properties.
2 and the flexible insulating member 17 includes a plurality of strip-shaped conductors 1.
6 and the conductive terminal 22 having spring property are integrally formed.
The piezoelectric transformer element 11 is elastically supported at its vibration node by a flexible insulating member 17 and a flexible adhesive.
【０００９】[0009]
【作用】本発明の圧電トランス電源の実装構造によれ
ば、圧電トランス素子１１と回路基板１４とを電気的に
接続するために、バネ性の導体端子２２と複数の帯状導
体１６を持つ可撓性絶縁部材１７を一体成形したものを
用いることにより、接続構造、実装構造全体の小型化を
計ることができる。しかも、圧電トランス素子１１の弾
性支持によってその振動を阻害することなく、また、外
面が可撓性絶縁部材１７のため高電圧から絶縁が確保さ
れる。更に、可撓性絶縁部材１７は、圧電トランス電源
のカバーを兼ねることから、製造工程の短縮が可能で、
低コスト化が図れる。According to the mounting structure of the piezoelectric transformer power supply of the present invention, in order to electrically connect the piezoelectric transformer element 11 and the circuit board 14, a flexible conductive terminal 22 having a spring-like conductor terminal 22 and a plurality of strip conductors 16 is provided. By using the integrally molded insulating member 17, it is possible to reduce the size of the entire connection structure and mounting structure. Moreover, the vibration is not hindered by the elastic support of the piezoelectric transformer element 11, and the outer surface is insulated from high voltage by the flexible insulating member 17. Further, since the flexible insulating member 17 also serves as a cover for the piezoelectric transformer power supply, the manufacturing process can be shortened.
Cost reduction can be achieved.
【００１０】[0010]
【発明の実施の形態】本発明の実施の形態については、
実施例の項で詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION
This will be described in detail in the section of Examples.
【００１１】[0011]
【実施例】図１は、本発明の第１実施例に係わる圧電ト
ランス電源の実装構造を示す斜視図である。圧電トラン
ス素子１１の内部に複数の内部導体を設け、内部電極と
交互にそれぞれ電気的接続を持たせた１組の外部電極１
２ａ，１２ｂを圧電トランス素子１１の両長辺側面に形
成し入力電極とし、さらに出力電極１３ａを圧電トラン
ス素子１１の短辺端面に形成し、圧電トランスが得られ
る。ここで圧電トランス素子１１の寸法は、４０ｍｍ×
６ｍｍ×１．５ｍｍであり、ＰＺＴ系セラミックを用
い、内部電極はＡｇ−Ｐｂを一体焼結し、外部電極１２
ａ，１２ｂはＡｇを焼き付けにて形成した。FIG. 1 is a perspective view showing a mounting structure of a piezoelectric transformer power supply according to a first embodiment of the present invention. A set of external electrodes 1 provided with a plurality of internal conductors inside the piezoelectric transformer element 11 and alternately electrically connected to the internal electrodes.
2a and 12b are formed on both long side surfaces of the piezoelectric transformer element 11 to serve as input electrodes, and an output electrode 13a is formed on the short side end face of the piezoelectric transformer element 11 to obtain a piezoelectric transformer. Here, the size of the piezoelectric transformer element 11 is 40 mm ×
6 mm × 1.5 mm, made of PZT ceramics, Ag—Pb was integrally sintered for the internal electrodes, and the external electrodes 12
For a and 12b, Ag was formed by baking.
【００１２】一方、圧電トランス素子１１と回路基板１
４とを電気的に接続するために、バネ性の導体端子２２
と複数の帯状導体１６を持つ可撓性絶縁部材１７は、圧
電トランス素子１１の入力電極１２ａ，１２ｂ、出力電
極１３ａとバネ性の導体端子２２ａ，２２ｂ，２２ｃと
接触でき、かつ、圧電トランス素子１１が挿入設置でき
る寸法形状に一体成形される。On the other hand, the piezoelectric transformer element 11 and the circuit board 1
4 are electrically connected to the conductive terminals 22 of the spring.
And a flexible insulating member 17 having a plurality of strip-shaped conductors 16 can contact the input electrodes 12a and 12b and the output electrode 13a of the piezoelectric transformer element 11 with the spring-like conductor terminals 22a, 22b and 22c, and 11 is integrally formed into a shape and a size that can be inserted and installed.
【００１３】次に、圧電トランス素子１１を可撓性絶縁
部材１７に設置し、圧電トランス素子１１の入力電極１
２ａ，１２ｂ、出力電極１３ａと導体端子２２ａ，２２
ｂ，２２ｃを一対一にはんだ付け等の方法で接続し、圧
電トランス素子１１は、その振動節点において可撓性絶
縁部材１７とシリコーン樹脂のような柔軟な接着剤で弾
性支持される。ここでバネ性の導体端子２２，２２ａ，
２２ｂ，２２ｃの素材は、例えばリン青銅等であり、帯
状導体１６の素材は、リン青銅のほかＣｕ、Ａｌ、Ｎｉ
等が挙げられる。可撓性絶縁部材１７の素材としては、
ポリイミド系、ポリエステル系等、一般にフレキシブル
プリント基板として使用されている樹脂である。Next, the piezoelectric transformer element 11 is placed on the flexible insulating member 17 and the input electrode 1 of the piezoelectric transformer element 11 is
2a, 12b, output electrode 13a and conductor terminals 22a, 22
The piezoelectric transformer elements 11 are elastically supported at their vibration nodes by a flexible insulating member 17 and a flexible adhesive such as silicone resin. Here, the spring-like conductor terminals 22, 22a,
The material of 22b and 22c is, for example, phosphor bronze, and the material of the band-shaped conductor 16 is Cu, Al, Ni in addition to phosphor bronze.
And the like. As a material of the flexible insulating member 17,
A resin generally used as a flexible printed circuit board, such as a polyimide-based or polyester-based resin.
【００１４】最終的に、圧電トランス素子１１を設置さ
れた可撓性絶縁部材１７の上下面を反転し、可撓性絶縁
部材１７と回路基板１４が圧電トランス素子１１を挟む
ように回路基板１４にはんだ付けなどで電気的に接続し
た後、可撓性絶縁部材１７を回路基板１４に接着剤等で
装着し、図３の圧電トランス電源を作製した。Finally, the upper and lower surfaces of the flexible insulating member 17 on which the piezoelectric transformer element 11 is installed are inverted, and the flexible insulating member 17 and the circuit board 14 are sandwiched by the circuit board 14 so that the piezoelectric transformer element 11 is sandwiched therebetween. After being electrically connected to the circuit board 14 by soldering or the like, the flexible insulating member 17 was mounted on the circuit board 14 with an adhesive or the like, thereby producing the piezoelectric transformer power supply shown in FIG.
【００１５】図２は、本発明の第２実施例で、３つの出
力電極１３ａ，１３ｂ，１３ｃで構成された圧電トラン
ス電源の斜視図である。以下第１実施例と同様に圧電ト
ランス電源を作製した。FIG. 2 is a perspective view of a piezoelectric transformer power supply according to a second embodiment of the present invention, which comprises three output electrodes 13a, 13b and 13c. Thereafter, a piezoelectric transformer power supply was manufactured in the same manner as in the first embodiment.
【００１６】下記の表１は実施例で得られた圧電トラン
スを電源に構成し、評価試験に供した結果の代表例を示
したものである。圧電トランス素子は、一体積層品（１
０層）であり、負荷にはφ２ｍｍ×２００ｍｍの冷陰極
管を用いた。表１に示すように、従来の絶縁シートを用
いた構造の圧電トランス電源と比較して、本発明の実装
構造の圧電トランス電源は同等以上の特性が得られるこ
とを確認した。Table 1 below shows typical examples of the results obtained by configuring the piezoelectric transformer obtained in the embodiment as a power supply and performing an evaluation test. The piezoelectric transformer element is a monolithic product (1
0 layer), and a cold cathode tube of φ2 mm × 200 mm was used as a load. As shown in Table 1, it was confirmed that the piezoelectric transformer power supply having the mounting structure of the present invention can obtain the same or better characteristics as compared with the piezoelectric transformer power supply having the structure using the conventional insulating sheet.
【００１７】[0017]
【表１】 [Table 1]
【００１８】また、１０００時間のエージング試験の結
果でも特性の劣化は認められない。No deterioration in characteristics is observed even in the results of the aging test for 1000 hours.
【００１９】さらに、本発明の実装構造では、ほかのい
かなる電極形状の圧電トランスを用いた場合でも同等以
上の効果が得られている。Further, in the mounting structure of the present invention, the same or more effects can be obtained even when a piezoelectric transformer having any other electrode shape is used.
【００２０】[0020]
【発明の効果】以上、詳細に説明したように、本発明の
圧電トランス電源の実装構造では、圧電トランス素子と
回路基板とを電気的に接続するために、バネ性の導体端
子と複数の帯状導体を持つ可撓性絶縁部材を一体成形し
たものを用いることにより、接続構造、実装構造全体の
小型化を計ることができる。しかも、圧電トランス素子
の弾性支持、可撓性絶縁部材の可撓性によって、圧電ト
ランス素子の振動を阻害することなく、振動漏れによる
損失も大幅に小さくすることができ、また、外面が可撓
性絶縁部材のため高電圧から絶縁が確保される。更に可
撓性絶縁部材は、圧電トランス電源のカバーを兼ねるこ
とから、放熱性にも優れ、製造工程の短縮ができ、低コ
スト化が図れる。As described above in detail, in the mounting structure of the piezoelectric transformer power supply according to the present invention, in order to electrically connect the piezoelectric transformer element and the circuit board, a spring-like conductor terminal and a plurality of strip-shaped conductor terminals are provided. By using an integrally molded flexible insulating member having a conductor, it is possible to reduce the size of the entire connection structure and mounting structure. In addition, the elastic support of the piezoelectric transformer element and the flexibility of the flexible insulating member can greatly reduce the loss due to vibration leakage without hindering the vibration of the piezoelectric transformer element, and the outer surface is flexible. The insulating material ensures insulation from high voltage. Further, since the flexible insulating member also serves as a cover for the piezoelectric transformer power supply, it has excellent heat dissipation, can shorten the manufacturing process, and can reduce the cost.
【図１】本発明の第１実施例に係わる圧電トランス電源
の実装構造を示す斜視図である。FIG. 1 is a perspective view showing a mounting structure of a piezoelectric transformer power supply according to a first embodiment of the present invention.
【図２】本発明の第２実施例に係わる圧電トランス電源
の実装構造を示す斜視図である。FIG. 2 is a perspective view showing a mounting structure of a piezoelectric transformer power supply according to a second embodiment of the present invention.
【図３】本発明により作製した圧電トランス電源の実装
構造の一例を示す斜視図である。FIG. 3 is a perspective view showing an example of a mounting structure of a piezoelectric transformer power supply manufactured according to the present invention.
【図４】従来の一般的な圧電トランス素子を示す概略的
斜視図である。FIG. 4 is a schematic perspective view showing a conventional general piezoelectric transformer element.
【図５】従来の圧電トランス電源の実装構造を示す分解
斜視図である。FIG. 5 is an exploded perspective view showing a mounting structure of a conventional piezoelectric transformer power supply.
１１ 圧電トランス素子 １２，１２ａ，１２ｂ 入力電極（外部電極） １３，１３ａ，１３ｂ，１３ｃ 出力電極 １４ 回路基板 １６ 帯状導体 １７ 可撓性絶縁部材 ２２，２２ａ，２２ｂ，２２ｃ，２２ｄ，２２ｅ 導
体端子DESCRIPTION OF SYMBOLS 11 Piezoelectric transformer element 12, 12a, 12b Input electrode (external electrode) 13, 13a, 13b, 13c Output electrode 14 Circuit board 16 Strip conductor 17 Flexible insulating member 22, 22a, 22b, 22c, 22d, 22e Conductor terminal
Claims (5)
子を駆動するための電源回路部品を搭載した回路基板と
の間を電気的に接続する圧電トランス電源の実装構造に
おいて、複数の帯状導体を一面に設けた可撓性絶縁部材
を、前記帯状導体面が前記圧電トランス素子の電極面と
接続可能な形状に成形し、前記圧電トランス素子を覆う
ように配設してなることを特徴とする圧電トランス電源
の実装構造。1. A mounting structure of a piezoelectric transformer power supply for electrically connecting a piezoelectric transformer element and a circuit board on which a power supply circuit component for driving the piezoelectric transformer element is mounted, wherein a plurality of band-shaped conductors are provided on one surface. A piezoelectric transformer, wherein the provided flexible insulating member is formed so that the strip-shaped conductor surface can be connected to the electrode surface of the piezoelectric transformer element, and is disposed so as to cover the piezoelectric transformer element. Power supply mounting structure.
おいて、前記圧電トランス素子の前記電極面との接触部
がバネ性の導体端子からなることを特徴とする請求項１
記載の圧電トランス電源の実装構造。2. A contact portion of the flexible insulating member with the electrode surface of the piezoelectric transformer element formed of a spring-like conductor terminal on the strip-shaped conductor surface.
Mounting structure of the described piezoelectric transformer power supply.
体及びバネ性の導体端子と共に、前記圧電トランス素子
を覆う形状に一体成形されることを特徴とする請求項１
記載の圧電トランス電源の実装構造。3. The flexible insulating member is formed integrally with the plurality of strip-shaped conductors and spring-like conductor terminals into a shape covering the piezoelectric transformer element.
Mounting structure of the described piezoelectric transformer power supply.
素子をその振動節点において柔軟な接着剤で弾性支持し
たことを特徴とする請求項１記載の圧電トランス電源の
実装構造。4. The mounting structure for a piezoelectric transformer power supply according to claim 1, wherein said flexible insulating member elastically supports said piezoelectric transformer element at a vibration node thereof with a flexible adhesive.
絶縁部材は上下面を反転し、前記圧電トランス素子を挟
むように回路基板に装着されることを特徴とする請求項
４記載の圧電トランス電源の実装構造。5. The piezoelectric transformer according to claim 4, wherein the flexible insulating member including the piezoelectric transformer element is mounted on a circuit board so that the piezoelectric transformer element is sandwiched between upper and lower surfaces. Power supply mounting structure.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9285618A JPH11121827A (en) | 1997-10-17 | 1997-10-17 | Mounting structure of piezoelectric transformer power supply |
| EP98115637A EP0898314B1 (en) | 1997-08-19 | 1998-08-19 | Piezoelectric transformer and power supply including the same |
| TW087113650A TW437112B (en) | 1997-08-19 | 1998-08-19 | Piezoelectric transformer and power supply including the same |
| US09/136,496 US5949179A (en) | 1997-08-19 | 1998-08-19 | Piezoelectric transformer and power supply including the same |
| DE69802482T DE69802482T2 (en) | 1997-08-19 | 1998-08-19 | Piezoelectric transformer and its use in a power supply device |
| KR1019980033572A KR19990023691A (en) | 1997-08-19 | 1998-08-19 | Piezoelectric Transformers and Power Supplies Including the Same |
| CNB981179436A CN1175440C (en) | 1997-08-19 | 1998-08-19 | Piezoelectric transformer and power supply including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9285618A JPH11121827A (en) | 1997-10-17 | 1997-10-17 | Mounting structure of piezoelectric transformer power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11121827A true JPH11121827A (en) | 1999-04-30 |
Family
ID=17693868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9285618A Pending JPH11121827A (en) | 1997-08-19 | 1997-10-17 | Mounting structure of piezoelectric transformer power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11121827A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001223405A (en) * | 2000-02-10 | 2001-08-17 | Tokin Corp | Piezoelectric transformer device |
| JP2001223406A (en) * | 2000-02-10 | 2001-08-17 | Tokin Corp | Piezoelectric transformer device |
| JP2001267652A (en) * | 2000-03-17 | 2001-09-28 | Tokin Corp | Piezoelectric transformer device |
| JP2001267651A (en) * | 2000-03-17 | 2001-09-28 | Tokin Corp | Piezoelectric transformer device |
-
1997
- 1997-10-17 JP JP9285618A patent/JPH11121827A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001223405A (en) * | 2000-02-10 | 2001-08-17 | Tokin Corp | Piezoelectric transformer device |
| JP2001223406A (en) * | 2000-02-10 | 2001-08-17 | Tokin Corp | Piezoelectric transformer device |
| JP2001267652A (en) * | 2000-03-17 | 2001-09-28 | Tokin Corp | Piezoelectric transformer device |
| JP2001267651A (en) * | 2000-03-17 | 2001-09-28 | Tokin Corp | Piezoelectric transformer device |
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