JPS6057714A - Piezoelectric resonator - Google Patents
Piezoelectric resonatorInfo
- Publication number
- JPS6057714A JPS6057714A JP16590083A JP16590083A JPS6057714A JP S6057714 A JPS6057714 A JP S6057714A JP 16590083 A JP16590083 A JP 16590083A JP 16590083 A JP16590083 A JP 16590083A JP S6057714 A JPS6057714 A JP S6057714A
- Authority
- JP
- Japan
- Prior art keywords
- case
- piezoelectric element
- holder
- metal terminal
- piezoelectric
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
- H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
- H03H9/1028—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device the BAW device being held between spring terminals
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
【発明の詳細な説明】 発咀の分野 この発明は圧電共振子に関し、特に、密閉性が億 高く、しかも量産性に賂机た圧電共振子に関する。[Detailed description of the invention] Field of development This invention relates to piezoelectric resonators, and in particular, piezoelectric resonators with This article relates to piezoelectric resonators that are expensive and easy to mass produce.
従来の技術
従来より圧電共振子において、圧電素子と該圧電素子を
挟持する２枚の金属端子板とを、ケースによって覆う方
法としては、概ね２つの方法かある。2. Description of the Related Art Conventionally, in a piezoelectric resonator, there are generally two methods for covering a piezoelectric element and two metal terminal plates sandwiching the piezoelectric element with a case.
１つは第１図ＡおよびＢに示すように、２つのケース片
により、圧電素子と、該圧電素子を挟持する２枚の金属
端子板とを挾み、２つのケース片の接合部を超音波容接
する方法である。第１図において、１は両面に電極を設
けた圧電素子であり、それぞれ脚部２ａ、３ａを備えた
金属端子板２．３により挟持されている。４ａ、４ｂは
ケース片であり、圧電素子１と、圧電素子１を挟持する
金属端子板２．３とを挾んでおり、ケース片４ａとケー
ス片４ｂとの接合部は超音波容接されケース４を構成し
ている。One is as shown in FIGS. 1A and B, in which a piezoelectric element and two metal terminal plates sandwiching the piezoelectric element are sandwiched between two case pieces, and the piezoelectric element is sandwiched between two case pieces. This is a method of receiving sound waves. In FIG. 1, reference numeral 1 denotes a piezoelectric element having electrodes on both sides, and is held between metal terminal plates 2.3 each having legs 2a and 3a. Case pieces 4a and 4b sandwich the piezoelectric element 1 and a metal terminal plate 2.3 that sandwiches the piezoelectric element 1, and the joint between the case piece 4a and the case piece 4b is ultrasonically welded to form the case. 4.
金属端子板２．３の脚部２ａ 、 ３ａは、それぞれケ
ース４外に導出されている。５は、金属端子板２．３の
脚部２ａ、３ａがケース４から導出されている部分の密
閉性を高めるための樹脂シール材である。The legs 2a and 3a of the metal terminal plate 2.3 are each led out of the case 4. 5 is a resin sealing material for improving the sealing performance of the portion where the leg portions 2a, 3a of the metal terminal plate 2.3 are led out from the case 4.
この従来の圧電共振子は、ケース片４ａとケース片４ｂ
とで、圧電素子１と、圧電素子１を挟持Ｊ−る金属端子
板２．３とを挾む構造となっているため、機械による自
動組立化が容易であり量産性に優れている。しかし、ケ
ース片４ａとケース片４ｂとの接合部を超音波容接して
ケース４を構成しているため、ケース４の密閉性が低く
、圧電共振子自体の信頼性が低くなるという問題を有し
ている。This conventional piezoelectric resonator has a case piece 4a and a case piece 4b.
Since the structure is such that the piezoelectric element 1 and the metal terminal plate 2.3 that sandwich the piezoelectric element 1 are sandwiched between them, automatic assembly by a machine is easy and mass production is excellent. However, since the case 4 is formed by ultrasonic welding of the joint between the case piece 4a and the case piece 4b, there is a problem in that the sealing performance of the case 4 is low and the reliability of the piezoelectric resonator itself is low. are doing.
もう １つの方法は、第２図Ａおよび已に示すように、
両面に電極を設けた圧電素子１と、圧電素子１を挟持す
る金属端子板２，３とを、一端開口状のケース６に挿入
して、開口部を、金属端子板２．３の脚部２ａ、３ａを
導出させるための２個の孔を有するシール液流入防止板
７で封止した後、さらに樹脂シール材５により封止する
方法である。Another method is as shown in Figure 2A and Figure 2.
A piezoelectric element 1 with electrodes on both sides and metal terminal plates 2 and 3 sandwiching the piezoelectric element 1 are inserted into a case 6 with an opening at one end, and the opening is inserted into the leg part of the metal terminal plate 2.3. This is a method of sealing with a sealing liquid inflow prevention plate 7 having two holes for leading out 2a and 3a, and then further sealing with a resin sealing material 5.
この従来の圧電共振子は、ケースθの開口面積が小さく
、しかも接合部分が少ないために、密閉性が高く信頼性
が高い。しかし、圧電素子１と、１に設けられた電極が
破損されることがあり、また挿入の調整が微妙であるた
め、機械による自動組立化が難しく量産性に劣っている
。This conventional piezoelectric resonator has a small opening area in the case θ and has few joints, so it has high sealing performance and high reliability. However, since the piezoelectric element 1 and the electrodes provided thereon may be damaged, and the insertion adjustment is delicate, automatic assembly by a machine is difficult and mass production is poor.
ものであって、その目的は密閉性が高く、しかも量産性
に優れたＭ！＋造の圧電共振子を提供することである。Its purpose is M!, which has a high airtightness and is easy to mass produce. An object of the present invention is to provide a piezoelectric resonator made of +.
発明の構成
この発明の要約すれば、両面に電極を設けた圧電素子と
、該圧電素子を挟持する、それぞれ脚部を備えた２枚の
金属端子板とを、絶縁性の保持体により保持させ、該保
持体に、一端開口状のケースを被せた構造の圧電共振子
である。Structure of the Invention To summarize the invention, a piezoelectric element provided with electrodes on both sides, and two metal terminal plates each having a leg portion, which sandwich the piezoelectric element, are held by an insulating holder. This piezoelectric resonator has a structure in which the holding body is covered with a case having an open end.
実施例の説明
以下図面にしたがい、この発明の圧電共振子の実施例を
説明する。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the piezoelectric resonator of the present invention will be described according to the drawings.
第３図Ａは、この発明の圧電共振子の一実施例のケース
を被せる前の状態を示す斜視図であり、第３図Ｂはその
側断面図である。第４図ＡおよびＢは、この発明の特徴
となる絶縁性の保持体の一例を示す斜視図である。FIG. 3A is a perspective view showing an embodiment of the piezoelectric resonator of the present invention before being covered with a case, and FIG. 3B is a side sectional view thereof. FIGS. 4A and 4B are perspective views showing an example of an insulating holder that is a feature of the present invention.
１１は両面に電極を備えた圧電素子であり、金属端子板
１２．１３により挟持されている。金属端子板１２．１
３は、それぞれ脚部１２ａ、１３ａと、ｖｉ述する保持
体１４の４個の係止片１４ａにより支持されるための凹
部１２ｂ、１３ｂをそれぞれ４ケ所ずつ有している。A piezoelectric element 11 has electrodes on both sides, and is held between metal terminal plates 12 and 13. Metal terminal plate 12.1
3 has leg portions 12a and 13a, respectively, and four recesses 12b and 13b for being supported by the four locking pieces 14a of the holder 14 described in vi.
１４は２個のうち一方の保持体でおり、圧電素子１１と
金属端子板１２．１３とを支えるための、円柱を縦に分
断した形状の４個の係止片１４ａと、後述するケース１
６の間口部を封止するための封止壁１４ｂとを有し、封
止壁１４ｂには金属端子板１２の脚部１２ａを導出する
ため溝１４ｃが設けられている。保持体１４の４個の係
止片１４ａは、圧電素子１１の振動を妨害しないように
、圧電素子１１の各辺における比較的振動振幅の小さい
部分に対向して設けられている。さらに保持体１４には
、ケース１６への挿入を容易にするためテーパー１４ｄ
が設けられている。Reference numeral 14 designates one of the two holding bodies, which includes four locking pieces 14a in the form of vertically divided cylinders for supporting the piezoelectric element 11 and the metal terminal plate 12.13, and a case 1 to be described later.
The sealing wall 14b is provided with a groove 14c for leading out the leg portion 12a of the metal terminal plate 12. The four locking pieces 14a of the holder 14 are provided facing portions of each side of the piezoelectric element 11 where the vibration amplitude is relatively small so as not to interfere with the vibration of the piezoelectric element 11. Furthermore, the holding body 14 has a taper 14d to facilitate insertion into the case 16.
is provided.
１５はもう一方の保持体であり、保持体１４の４個の係
止片１４ａと嵌合させるための４個の半円状の切欠き１
５ａと、ケース１６の開口部を封止するための封止壁１
５１１を有し、封止壁１５ｂには金属端子板１３の脚部
１３ａを導出するための溝１５ｃが設けられている。さ
らに保持体１５には、ケース１６ヘノ挿入を容易にする
ためのテーパー１５ｄが設けられている。15 is the other holding body, and has four semicircular notches 1 for fitting with the four locking pieces 14a of the holding body 14.
5a, and a sealing wall 1 for sealing the opening of the case 16.
511, and a groove 15c for leading out the leg portion 13a of the metal terminal plate 13 is provided in the sealing wall 15b. Further, the holder 15 is provided with a taper 15d to facilitate insertion into the case 16.
以上のような形状の保持体１４と保持体１５とで、圧電
素子１１と金属端子板１２．１３とを挾み込／Ｖで保持
する。この際、保持体１４の係止片１４ａの先端部分と
保持体１５の切欠き１５ａは嵌合される。係止片１４ａ
と切欠き１５ａとの嵌合部分はカシメ・熱溶融等によっ
て固定してもよいし、ただ嵌め込むだけにしておき、冶
具で保持体１４と１５とを仮固定してケース１６に挿入
してもよい。また、係止片１４ａの先端部分に段を付け
ておけば、必要以上に係止片１４ａが切欠き１５ａに嵌
まり込むことがない。The piezoelectric element 11 and the metal terminal plate 12, 13 are held by the holding body 14 and the holding body 15 having the above-described shapes by inserting /V. At this time, the tip portion of the locking piece 14a of the holder 14 and the notch 15a of the holder 15 are fitted. Locking piece 14a
The fitting portion between the holder 14 and the notch 15a may be fixed by caulking, heat melting, etc., or it may be simply fitted, and the holding bodies 14 and 15 are temporarily fixed with a jig and inserted into the case 16. Good too. Furthermore, if the tip of the locking piece 14a is stepped, the locking piece 14a will not fit into the notch 15a more than necessary.
このようにして、圧電素子１１と金属板端子板１２．１
３とを保持体１４．１５に、一端開口状のケース１６が
被せられる。ケース１６の一端開口部分には、保持体１
４．１５が挿入され易いようにテーパー１θａが設けら
れている。保持体１４．１５を挿入した後のケース１６
の一端開口部分は、密閉性を高めるための樹脂シール材
（図示せず）により封止される。In this way, the piezoelectric element 11 and the metal plate terminal plate 12.1
3 and the holder 14.15 are covered with a case 16 having an open end. At one end of the case 16, a holding body 1 is installed.
A taper 1θa is provided so that 4.15 can be easily inserted. Case 16 after insertion of retainer 14.15
The opening at one end is sealed with a resin sealant (not shown) to improve airtightness.
以上のように構成された圧電共振子は、本発明の一実施
例であり、本発明の趣旨を損なわない範囲内で設計変更
をなしうろことはいうまでもない。The piezoelectric resonator constructed as described above is one embodiment of the present invention, and it goes without saying that the design may be changed without departing from the spirit of the present invention.
特に保持体１４ａ５よび１５の形状については任意であ
り、中でも係止片１４ａの形状と個数はこの実施例に限
定されるものではない。また、金属端子板１２．１３の
凹部１２ｂ、ｉ３ｂは必ずしも必要ではない。In particular, the shapes of the holders 14a5 and 15 are arbitrary, and the shape and number of the locking pieces 14a are not limited to this embodiment. Further, the recesses 12b and i3b of the metal terminal plate 12.13 are not necessarily required.
発明の効果
以上の説明からも明らかなように、本発明の圧電共振子
は、密閉性が高く信頼性の高いものである。しかも、保
持体をケースに挿入する際に、圧電素子に設りられた電
極が破損されるということがなく、また挿入に調整を要
しないため、機械による自動組立化が容易であり、恒産
とコス［ダウンを図ることができる。Effects of the Invention As is clear from the above explanation, the piezoelectric resonator of the present invention has high sealing performance and high reliability. Moreover, when inserting the holder into the case, the electrodes installed on the piezoelectric element will not be damaged, and since no adjustment is required for insertion, automatic assembly by machine is easy and constant production is ensured. Kos [can be brought down.
さらに、保持体の肉厚弁だけ外装ケースの肉厚を薄くす
れば、全体の大きさは従来の圧電共振子と変わることは
ない。つまりこの発明の圧電共振子は、大型化されるこ
となく、密閉性の向上と量産性の向上とをなしているこ
とになる。Furthermore, if the thickness of the outer case is reduced by the thickness of the holder, the overall size remains the same as that of a conventional piezoelectric resonator. In other words, the piezoelectric resonator of the present invention improves hermeticity and mass productivity without increasing the size.
第１図Ａは従来の圧電共振子を示す斜視図、第１図Ｂは
そめ側断面図、第２図Ａは別の従来の圧電共振子を示す
斜視図、第２図Ｂはその側断面図、第３図Ａはこの発明
の一実施例の圧電共振子の外装ケースを被せる前の状態
を示す斜視図、第３図Ｂはその側断面図、第４図Ａおよ
びＢはこの実施例に用いた保持体を示す斜視図。
１１・・・・・・圧電素子、１２．１３・・・・・・金
属端子板、１４゜１５・・・・・・保持体、１６・・・
・・・ケース。
特 許 出 願 人
株式会社利田製作所
第
第３図
（八）
（Ｂ）Fig. 1A is a perspective view of a conventional piezoelectric resonator, Fig. 1B is a side cross-sectional view, Fig. 2A is a perspective view of another conventional piezoelectric resonator, and Fig. 2B is a side cross-section thereof. Figure 3A is a perspective view of a piezoelectric resonator according to an embodiment of the present invention before being covered with an exterior case, Figure 3B is a side sectional view thereof, and Figures 4A and B are this embodiment. FIG. 11...Piezoelectric element, 12.13...Metal terminal plate, 14°15...Holding body, 16...
···Case. Patent application: Toda Seisakusho Co., Ltd. Figure 3 (8) (B)
Claims (1)
、それぞれ脚部を備えた２枚の金属端子板とを、ケース
で覆ってなる圧電共振子において前記圧電素子と、前記
２枚の金属端子板とを絶縁性の保持体により保持させ、
該保持体に一端間口状のケースを被せてなることを特徴
とする圧電共振子。In a piezoelectric resonator formed by covering a piezoelectric element with electrodes on both sides and two metal terminal plates sandwiching the piezoelectric element and each having a leg part, the piezoelectric element and the two metal terminal plates are covered with a case. The metal terminal plate is held by an insulating holder,
A piezoelectric resonator characterized in that the holding body is covered with a case having an opening at one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16590083A JPS6057714A (en) | 1983-09-08 | 1983-09-08 | Piezoelectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16590083A JPS6057714A (en) | 1983-09-08 | 1983-09-08 | Piezoelectric resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6057714A true JPS6057714A (en) | 1985-04-03 |
Family
ID=15821118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16590083A Pending JPS6057714A (en) | 1983-09-08 | 1983-09-08 | Piezoelectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6057714A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921362A (en) * | 2017-03-02 | 2017-07-04 | 金华市创捷电子有限公司 | A kind of crystal resonator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124183U (en) * | 1974-08-05 | 1976-02-21 | ||
| JPS5629531B2 (en) * | 1977-05-18 | 1981-07-09 |
-
1983
- 1983-09-08 JP JP16590083A patent/JPS6057714A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124183U (en) * | 1974-08-05 | 1976-02-21 | ||
| JPS5629531B2 (en) * | 1977-05-18 | 1981-07-09 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921362A (en) * | 2017-03-02 | 2017-07-04 | 金华市创捷电子有限公司 | A kind of crystal resonator |
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