JPH0611636Y2 - Piezoelectric vibrator - Google Patents
Piezoelectric vibratorInfo
- Publication number
- JPH0611636Y2 JPH0611636Y2 JP1987094535U JP9453587U JPH0611636Y2 JP H0611636 Y2 JPH0611636 Y2 JP H0611636Y2 JP 1987094535 U JP1987094535 U JP 1987094535U JP 9453587 U JP9453587 U JP 9453587U JP H0611636 Y2 JPH0611636 Y2 JP H0611636Y2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- piezoelectric vibrator
- plate
- base
- conductive pattern
- 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
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
【考案の詳細な説明】 （考案の利用分野） 本考案は大量生産に適し、特に耐熱性が良好でプリント
基板の表面に直接、実装することが可能なチップ化した
圧電振動子に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Utilization of the Invention) The present invention relates to a piezoelectric vibrator which is suitable for mass production, has particularly good heat resistance, and can be directly mounted on the surface of a printed circuit board.
（発明の背景） 近時、電子技術の広い分野において、圧電振動子が大量
に用いられている。特に水晶振動子は共振時のＱ値が極
めて高く、電気的な特性も安定な為に通信機器、デジタ
ル制御機器等の時間および周波数の基準源として広く利
用されている。(Background of the Invention) Recently, a large number of piezoelectric vibrators are used in a wide field of electronic technology. In particular, a crystal oscillator has a very high Q value at resonance and has stable electric characteristics, and is therefore widely used as a reference source of time and frequency for communication equipment, digital control equipment and the like.
（従来技術） 従来、圧電振動子、例えば水晶振動子では一般にベース
に端子を植設し、この端子の一端で水晶振動板を保持す
るとともに電極を外部へ導出し、ここにカバーを被せ
て、その開口端を上記ベースで気密に封止するようにし
ている。そして、上記端子をプリント基板の所定位置に
穿設した孔に差し込んで回路パターンにハンダ付けして
電気的に接続するとともに保持するようにしている。(Prior Art) Conventionally, in a piezoelectric vibrator, for example, a crystal resonator, a terminal is generally implanted in a base, a crystal diaphragm is held at one end of the terminal, an electrode is led out to the outside, and a cover is put on the electrode. The open end is hermetically sealed by the base. Then, the terminals are inserted into holes formed at predetermined positions of the printed circuit board and soldered to a circuit pattern so as to be electrically connected and held.
しかしながら近時、電子機器に用いる種々の回路部品で
はリード端子を持たないチップ化されたものが多用され
ている。そして、組立て工程ではパーツフィーダ等を用
いて、所定の回路部品をプリント基板の所定位置に自動
的に搭載して実装する、いわゆる自動組立が行われてい
る。このため、圧電振動子もチップ化して自動組立に対
応可能とすることが望まれている。However, recently, various circuit components used in electronic devices are often used in the form of chips without lead terminals. In the assembly process, so-called automatic assembly is performed in which a predetermined circuit component is automatically mounted and mounted at a predetermined position on a printed circuit board using a parts feeder or the like. Therefore, it is desired that the piezoelectric vibrator be made into a chip so that it can be adapted to automatic assembly.
（従来技術の問題点） すなわち従来の圧電振動子は、圧電振動板を収納したケ
ースからリード線を導出している。(Problems of Prior Art) That is, in the conventional piezoelectric vibrator, the lead wire is led out from the case in which the piezoelectric diaphragm is housed.
したがってチップ部品のように自動組立を行うことは困
難である。このため、圧電振動子もチップ型に成形して
自動組立を行えるようにすることが望まれている。Therefore, it is difficult to perform automatic assembly like a chip component. For this reason, it is desired that the piezoelectric vibrator is also formed in a chip shape so that it can be automatically assembled.
またチップ部品をプリント基板に装着する場合は、比較
的高温度にさらされるので、水晶振動子の場合もチップ
化するためには耐熱性を向上する必要があった。Further, when the chip component is mounted on the printed circuit board, it is exposed to a relatively high temperature, so that it is necessary to improve the heat resistance of the crystal oscillator in order to form a chip.
（考案の目的） 本考案は、プリント基板の表面に直接装着することが可
能で、耐熱性に優れ、大量生産に適するチップ化した圧
電振動子を提供することを目的とするものである。(Object of the Invention) An object of the present invention is to provide a piezoelectric vibrator that can be directly mounted on the surface of a printed circuit board, has excellent heat resistance, and is suitable for mass production in the form of a chip.
（考案の概要） 本考案はベースの板面に導電パターンを形成し、ここに
保持部材を固着し、この保持部材に圧電振動板の電極を
固着して保持し、ここにカバーを被せて気密に封止する
ことを特徴とするものである。(Outline of the Invention) In the present invention, a conductive pattern is formed on a plate surface of a base, a holding member is fixed thereto, and an electrode of a piezoelectric vibrating plate is fixed and held to the holding member, and a cover is put on the holding member to hermetically seal it. It is characterized in that it is sealed in.
（実施例） 第１図は、本発明の一実施例を説明する組立て斜視図で
ある。すなわちベース１は、たとえばセラミックからな
り概略矩形の板状に成形している。そしてベース１の板
面に焼き付け印刷により一対の導電パターン１Ａを形成
している。この導電パターン１Ａは、たとえば開口を向
かい合わせた一対のコの字形に形成し、このコの字形の
両側からベースの幅方向に向けて引出し部を導出し、さ
らにベース１の幅方向の側部に形成したスルーホール用
の切り欠き１Ｂを介して反対側の板面へ回り込ませるよ
うにしている。(Embodiment) FIG. 1 is an assembled perspective view illustrating an embodiment of the present invention. That is, the base 1 is made of, for example, ceramic and is formed into a substantially rectangular plate shape. Then, a pair of conductive patterns 1A is formed on the plate surface of the base 1 by printing. The conductive pattern 1A is formed, for example, in a pair of U-shapes with openings facing each other, and leads out from both sides of the U-shape in the width direction of the base. The notch 1B for through hole formed in the above is used to wrap around to the plate surface on the opposite side.
そして２は金属、例えば洋白製の板状の保持部材であ
る。この保持部材２は、矩形の枠部２Ａを形成し、この
枠部２Ａの枠内に上記導電パターン１Ａに固着する固着
部２Ｂ、固着部２Ｂから細腕部２Ｃを介して延出した支
持部２Ｄとを設けている。Reference numeral 2 denotes a metal-made, for example, nickel-white plate-shaped holding member. The holding member 2 forms a rectangular frame portion 2A, and a fixing portion 2B fixed to the conductive pattern 1A in the frame of the frame portion 2A, and a supporting portion 2D extending from the fixing portion 2B via a thin arm portion 2C. And are provided.
そして一対の保持部材２を所定の間隙を存して向かい合
わせて配設し、固着部２Ｂをベース１の導電パターン
に、例えばポリイミド系の導電性接着剤で固着する。Then, the pair of holding members 2 are arranged facing each other with a predetermined gap, and the fixing portion 2B is fixed to the conductive pattern of the base 1 with, for example, a polyimide-based conductive adhesive.
そして、保持部材２の支持部２Ｄに矩形の圧電振動板３
の長手方向の両端に導出した電極３Ａを同様にポリイミ
ド系の導電性接着剤をもって固着し、機械的に保持する
とともに電気的に接続する。Then, the rectangular piezoelectric vibrating plate 3 is attached to the supporting portion 2D of the holding member 2.
Similarly, the electrodes 3A led out to the both ends in the longitudinal direction are fixed with a polyimide-based conductive adhesive, mechanically held and electrically connected.
そして、セラミック製のカバー４の開口端面に予め低融
点ガラスを塗着して上記圧電振動板３に被せて、その開
口端面を上記ベース１の板面に当接させる。これを窒素
雰囲気中で、例えば３００℃ないし４００℃に加熱し、
カバー４の開口端面の低融点ガラスを溶かしてベース１
の板面で気密に封止する。Then, a low melting point glass is previously applied to the opening end surface of the ceramic cover 4, and the piezoelectric vibrating plate 3 is covered therewith, and the opening end surface is brought into contact with the plate surface of the base 1. This is heated in a nitrogen atmosphere to, for example, 300 ° C to 400 ° C,
Base 1 by melting the low-melting glass on the open end surface of cover 4
The plate surface is hermetically sealed.
なお、保持部材２は、第２図に示す第１図II−II線矢視
断面図のように枠部２Ａおよび支持部２Ｄの厚みに比し
て、固着部２Ｂおよび細腕部２Ｃの厚みを略半分の薄肉
に成形している。In addition, the holding member 2 has a thickness of the fixing portion 2B and the thin arm portion 2C as compared with the thickness of the frame portion 2A and the supporting portion 2D as shown in the sectional view taken along the line II-II in FIG. 1 shown in FIG. It is molded to almost half the thickness.
このようにすれば、支持部２Ｄで圧電振動板３を支持し
た時に、固着部２Ｂの厚みは支持部２Ｄの厚みの略半分
であり、圧電振動板３の電極部分が固着部２Ｂに当接し
て振動特性を損なうことを防止することができる。With this configuration, when the piezoelectric vibrating plate 3 is supported by the supporting portion 2D, the thickness of the fixed portion 2B is approximately half the thickness of the supporting portion 2D, and the electrode portion of the piezoelectric vibrating plate 3 contacts the fixing portion 2B. It is possible to prevent the vibration characteristics from being deteriorated.
また固着部２Ｂから延出した支持部２Ｄは、その間に幅
も狭く厚みの薄い細腕部２Ｂを設けているのでこの部分
の剛性が低下し十分な弾性を得られる。Further, since the supporting portion 2D extending from the fixing portion 2B is provided with the thin arm portion 2B having a small width and a small thickness therebetween, the rigidity of this portion is reduced and sufficient elasticity can be obtained.
なお支持部２Ｄで圧電振動板３を支持した状態では、向
かい合った一対の支持部２Ｄ間に圧電振動板３を載置し
て保持するようにしているので安定かつ確実に保持する
ことができる。そして、外部から振動、衝撃等が作用し
た場合、弾性に富んだ細腕部２Ｂの存在によって圧電振
動板３への影響を緩和することができる。When the piezoelectric vibrating plate 3 is supported by the supporting portion 2D, the piezoelectric vibrating plate 3 is mounted and held between the pair of facing supporting portions 2D, so that the piezoelectric vibrating plate 3 can be stably and reliably held. Then, when vibration, impact, or the like is applied from the outside, the influence on the piezoelectric diaphragm 3 can be mitigated by the presence of the elastic thin arms 2B.
そして保持部材２の固着部２Ｂは、ベース１のコの字形
の導電パターン１Ａの略開口に位置するので、ほとんど
の部分は直接、ベース１に接着することができ良好な接
着強度を得られ、固着部２Ｂの側端部を導電パターン１
Ａに接着して電気的導通を得るようにしている。Further, since the fixing portion 2B of the holding member 2 is located substantially in the opening of the U-shaped conductive pattern 1A of the base 1, most of the portion can be directly bonded to the base 1 and good bonding strength can be obtained. The conductive pattern 1 is formed on the side end of the fixed portion 2B.
It is adhered to A for electrical conduction.
また枠２Ａによって、封止の際に溶融した低融点ガラス
が枠２Ａ内に流れ込むことを阻止するようにしている。
したがって枠２Ａ内に溶融したガラスが流れ込んで、細
腕部２Ｂ、支持部２Ｄを固定してしまうことを防止し、
これらが十分な弾性を発揮することができるようにして
いる。Further, the frame 2A prevents the low melting point glass melted at the time of sealing from flowing into the frame 2A.
Therefore, it is possible to prevent molten glass from flowing into the frame 2A and fixing the thin arm portion 2B and the support portion 2D,
These are able to exhibit sufficient elasticity.
またカバー４を封止する際に、保持部材２の枠２Ａの外
側にカバー４の内壁が当接し、容易に正確な位置決めを
行うことができる。Further, when the cover 4 is sealed, the inner wall of the cover 4 contacts the outside of the frame 2A of the holding member 2 so that accurate positioning can be easily performed.
（他の事項） なお、本考案は上記実施例に限定されるものではなく、
例えば上記実施例ではポリイミド系の導電性接着剤を用
いて耐熱性を高めるようにしたが、あまり耐熱性を必要
としない場合はエポキシ系の接着剤を用いることも可能
である。(Other Matters) The present invention is not limited to the above embodiment,
For example, in the above-mentioned embodiment, the heat resistance is increased by using a polyimide-based conductive adhesive, but an epoxy-based adhesive may be used when heat resistance is not required so much.
さらにカバー４はセラミック製のものを用いるようにし
たが金属製のものを用いるようにしてもよい。Further, although the cover 4 is made of ceramic, it may be made of metal.
（発明の効果） 以上詳述したように、本考案によれば、プリント基板の
表面に直接装着することが可能で、耐熱性に優れ、大量
生産に適する圧電振動子を提供することができる。(Effects of the Invention) As described in detail above, according to the present invention, it is possible to provide a piezoelectric vibrator that can be directly mounted on the surface of a printed circuit board, has excellent heat resistance, and is suitable for mass production.
第１図は本発明の一実施例を説明する組立斜視図、第２
図は第１図のII−II線矢視断面図である。 １……ベース ２……保持部材 ３……圧電振動板 ４……カバーFIG. 1 is an assembled perspective view illustrating an embodiment of the present invention, and FIG.
The figure is a sectional view taken along the line II-II of FIG. 1 ... Base 2 ... Holding member 3 ... Piezoelectric diaphragm 4 ... Cover
Claims (4)
材からなるベースと、 金属板から一体に成形された枠部およびこの枠部の枠内
に設けられ上記導電パターンに固着される固着部および
この固着部から細腕部を介して導出した支持部を有する
保持部材と、 この保持部材に両端部を保持されるとともに板面に形成
した電極を外部へ導出した圧電振動板と、 上記圧電振動板に被せて開口を上記ベースによって気密
に封止したカバーとを具備することを特徴とする圧電振
動子。1. A base made of a plate-shaped insulating material having a conductive pattern formed on a plate surface, a frame part integrally formed from a metal plate, and a frame provided in the frame part, which is fixed to the conductive pattern. A holding member having a fixing portion and a supporting portion led out from the fixing portion via a thin arm portion; a piezoelectric vibrating plate having both ends held by the holding member and having electrodes formed on the plate surface led to the outside; A piezoelectric vibrator, comprising: a cover that covers a piezoelectric vibration plate and hermetically seals the opening with the base.
ことを特徴とする実用新案登録請求の範囲第１項に記載
の圧電振動子。2. A piezoelectric vibrator according to claim 1, wherein the thin arm portion is formed thinner than the support portion.
電パターンを焼成したことを特徴とする実用新案登録請
求の範囲第１項に記載の圧電振動子。3. The piezoelectric vibrator according to claim 1, wherein the base is made of ceramic and a conductive pattern is fired on the plate surface.
り振動を行うことを特徴とする実用新案登録請求の範囲
第１項に記載の圧電振動子。4. The piezoelectric vibrator according to claim 1, wherein the piezoelectric diaphragm is formed in a rectangular shape and vibrates in a thickness shear vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987094535U JPH0611636Y2 (en) | 1987-06-19 | 1987-06-19 | Piezoelectric vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987094535U JPH0611636Y2 (en) | 1987-06-19 | 1987-06-19 | Piezoelectric vibrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643214U JPS643214U (en) | 1989-01-10 |
| JPH0611636Y2 true JPH0611636Y2 (en) | 1994-03-23 |
Family
ID=31319071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987094535U Expired - Lifetime JPH0611636Y2 (en) | 1987-06-19 | 1987-06-19 | Piezoelectric vibrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0611636Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0720971Y2 (en) * | 1990-02-14 | 1995-05-15 | 株式会社大真空 | Support structure for piezoelectric vibrator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952720U (en) * | 1982-09-24 | 1984-04-06 | キンセキ株式会社 | piezoelectric vibrator container |
| JPS6030628U (en) * | 1983-08-04 | 1985-03-01 | キンセキ株式会社 | Support for rectangular piezoelectric vibrator |
-
1987
- 1987-06-19 JP JP1987094535U patent/JPH0611636Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS643214U (en) | 1989-01-10 |
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