JPH11145757A - Container for piezoelectric oscillator - Google Patents
Container for piezoelectric oscillatorInfo
- Publication number
- JPH11145757A JPH11145757A JP32710997A JP32710997A JPH11145757A JP H11145757 A JPH11145757 A JP H11145757A JP 32710997 A JP32710997 A JP 32710997A JP 32710997 A JP32710997 A JP 32710997A JP H11145757 A JPH11145757 A JP H11145757A
- Authority
- JP
- Japan
- Prior art keywords
- plating
- copper
- sealing
- executed
- sealing pipe
- 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
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はシリンダータイプの
気密端子と封止管を圧入して気密性を保持するシリンダ
ータイプ圧入型圧電振動子の容器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder-type press-fit type piezoelectric vibrator container which press-fits a cylinder-type airtight terminal and a sealing tube to maintain airtightness.
【０００２】[0002]
【従来の技術】シリンダータイプ圧入型圧電振動子の容
器は気密端子と封止管で構成されている。図１はシリン
ダータイプ圧入型圧電振動子の代表的な音叉型水晶振動
子の分解斜視図である。２本のリード線３と金属環４、
２本のリード線３と金属環４を位置決め固定する絶縁部
材５で構成される気密端子１と２本のリード線に固定さ
れる音叉型水晶振動片６と点線で示された封止管２で構
成されている。2. Description of the Related Art A cylinder-type press-fit type piezoelectric vibrator has a hermetic terminal and a sealing tube. FIG. 1 is an exploded perspective view of a typical tuning-fork type crystal vibrator of a cylinder type press-fit type piezoelectric vibrator. Two lead wires 3 and a metal ring 4,
An airtight terminal 1 composed of an insulating member 5 for positioning and fixing two lead wires 3 and a metal ring 4, a tuning-fork type quartz vibrating piece 6 fixed to the two lead wires, and a sealing tube 2 indicated by a dotted line. It is composed of
【０００３】励振電極や固定用電極を形成された（不図
示）音叉型水晶振動片６は２本のリード線３に接着剤等
で固定され、振動周波数を調整してから金属環４の外周
に封止管２が圧入される。音叉型水晶振動子の場合、水
晶振動片６が収納される空間が真空状態の方が電気的特
性が良くなるので、前記圧入作業は真空槽の中で行なわ
れている。A tuning-fork type crystal vibrating piece 6 (not shown) on which an excitation electrode and a fixing electrode are formed is fixed to two lead wires 3 with an adhesive or the like. The sealing tube 2 is press-fitted. In the case of the tuning-fork type quartz resonator, the press-fitting operation is performed in a vacuum chamber because the electrical properties are better when the space in which the quartz resonator blank 6 is housed is in a vacuum state.
【０００４】気密端子１と封止管２の圧入部分には圧入
後の気密性を高めるために軟質金属がメッキされてい
る。錫−鉛系のハンダメッキが多用されており、近年の
耐熱性音叉型水晶振動子では融点の高い鉛メッキ（鉛が
９０重量％以上のハンダ）が使用されてきている。気密
端子１と封止管２の両方に軟質金属をメッキする組合せ
と、一方にニッケル等の硬度の高い金属をメッキをし、
他方に軟質金属をメッキする組合せがあるが、いずれも
ハンダメッキが使用されている。ハンダメッキの下地と
しては銅又はニッケルがメッキされている。The press-fitted portions of the hermetic terminal 1 and the sealing tube 2 are plated with a soft metal in order to improve the airtightness after press-fitting. Tin-lead solder plating is frequently used, and in recent years, heat-resistant tuning-fork type quartz vibrators have used lead plating having a high melting point (solder containing 90% by weight or more lead). A combination in which both the hermetic terminal 1 and the sealing tube 2 are plated with a soft metal, and one of which is plated with a metal having high hardness such as nickel,
On the other hand, there is a combination in which a soft metal is plated, and solder plating is used in each case. Copper or nickel is plated as a base for solder plating.
【０００５】電子部品の回路基板への実装にリフロー炉
が使用されるのが一般化し、圧電振動子も他の電子部品
と一緒にリフロー炉で実装することが出来ることが要求
されている。[0005] The use of a reflow furnace for mounting electronic components on a circuit board has become common, and it is required that the piezoelectric vibrator can be mounted together with other electronic components in the reflow furnace.
【０００６】[0006]
【発明が解決しようとする課題】圧電振動子の内部は真
空状態にして圧入封止されるが、真空状態の空間に面す
る気密端子や封止管の表面にハンダメッキが施されてい
ると、保存温度状態によりハンダメッキ被膜中に吸蔵さ
れている有機成分やガスが徐々に空間に放出され、真空
状態の空間の圧力が上昇する。例えば封止時の圧力が
１．３Ｐａで封止後２５℃で保存した場合はほとんど変
化しないが、圧電振動子の保存温度が高くなると８５
℃、１０００時間保存では４０Ｐａ、１５０℃、１００
０時間保存では１３３Ｐａと変化する。圧力が変化する
だけでも圧電振動子の電気特性が変化するが、前記ガス
等が圧電振動片に付着することによっても電気特性が変
化し、概ね特性の悪い方向に変化する。The inside of the piezoelectric vibrator is press-fitted and sealed in a vacuum state, but if the surface of the airtight terminal or the sealing tube facing the space in the vacuum state is plated with solder. Depending on the storage temperature, the organic components and gases occluded in the solder plating film are gradually released into the space, and the pressure in the vacuum space increases. For example, when the pressure at the time of sealing is 1.3 Pa and it is stored at 25 ° C. after the sealing, it hardly changes.
℃, storage for 1000 hours, 40 Pa, 150 ℃, 100
It changes to 133 Pa when stored for 0 hours. Even if the pressure alone changes, the electric characteristics of the piezoelectric vibrator change, but the electric characteristics also change due to the gas or the like adhering to the piezoelectric vibrating reed, and the characteristics generally change in a poor direction.
【０００７】リフロー炉での実装は短時間ではあるが圧
電振動子に２６０℃の高温がかかる。ハンダメッキ被膜
中の鉛が蒸発して空間に飛散し、圧電振動片の表面に付
着する。また、錫も塩素が付着していると１００℃位で
塩化錫になって蒸発し、圧電振動片の表面に付着する。
これらの付着により電気特性が悪化するのは前述と同様
である。Although mounting in a reflow furnace is for a short time, a high temperature of 260 ° C. is applied to the piezoelectric vibrator. The lead in the solder plating film evaporates and scatters into the space, and adheres to the surface of the piezoelectric vibrating reed. Also, if chlorine adheres, tin becomes tin chloride at about 100 ° C., evaporates, and adheres to the surface of the piezoelectric vibrating reed.
As described above, the electrical characteristics are deteriorated due to the adhesion.
【０００８】[0008]
【課題を解決するための手段】気密端子と封止管で構成
されるシリンダータイプ圧入型圧電振動子の容器におい
て、気密端子と封止管の表面にはそれぞれ銅メッキを施
す。SUMMARY OF THE INVENTION In a container of a cylinder-type press-fit type piezoelectric vibrator composed of an airtight terminal and a sealing tube, the surfaces of the airtight terminal and the sealing tube are each plated with copper.
【０００９】気密端子の銅メッキは下地としてシアン化
銅浴でストライク銅メッキを行い、その上に硫酸銅メッ
キを施す。The copper plating of the hermetic terminal is performed by strike copper plating in a copper cyanide bath as a base, and then copper sulfate plating.
【００１０】[0010]
【発明の実施の形態】図２は気密端子１の正面断面図で
ある。絶縁部材（一般にガラス）５によりハーメッチッ
クシールした後洗浄する。最初にシアン化銅浴でストラ
イクメッキ７を１μｍ程の厚さで行なう。ストライクメ
ッキ法は金属イオン濃度の極めて低いメッキ液中で短時
間に大電流でメッキを行なうので、均一で緻密な薄いメ
ッキ被膜ができ、密着性と防食の効果を高めることが出
来る。金属環４やリード線３は主成分が鉄なのでストラ
イクメッキ７をすることにより密着性の向上が図れる。
これは通常の硫酸銅メッキで発生する鉄と銅の置換反応
による密着性の低下がないからである。FIG. 2 is a front sectional view of the hermetic terminal 1. FIG. After being hermetically sealed with an insulating member (generally glass) 5, it is washed. First, strike plating 7 is performed in a copper cyanide bath to a thickness of about 1 μm. In the strike plating method, plating is performed with a large current in a plating solution having a very low concentration of metal ions in a short time, so that a uniform, dense and thin plating film can be formed, and the adhesion and anticorrosion effects can be enhanced. Since the main component of the metal ring 4 and the lead wire 3 is iron, the strike plating 7 can improve the adhesion.
This is because there is no decrease in adhesion due to a substitution reaction between iron and copper generated by ordinary copper sulfate plating.
【００１１】次に硫酸銅メッキ８を行なう。メッキ厚は
気密端子と封止管の圧入嵌合代や、気密端子、封止管の
嵌合面の状態により異なるが５μｍ以上は必要であり、
１０〜２０μｍが好ましい。メッキ厚があまり厚いのは
経済性からも品質面からもよい結果は出ない。Next, copper sulfate plating 8 is performed. The plating thickness differs depending on the press-fitting allowance of the hermetic terminal and the sealing tube, and the state of the mating surface of the hermetic terminal and the sealing tube.
10-20 μm is preferred. If the plating thickness is too large, good results are not obtained in terms of economy and quality.
【００１２】封止管は洋白を使用した。洋白は銅、ニッ
ケル、亜鉛を主成分とする同合金であるので、直接硫酸
銅メッキが可能である。封止管に鉄を主成分とする金属
を使用するときは、前述の気密端子と同様なメッキ工程
を採るとよい。[0012] The sealing tube was made of nickel silver. Since nickel silver is the same alloy containing copper, nickel and zinc as main components, direct copper sulfate plating is possible. When a metal mainly composed of iron is used for the sealing tube, a plating process similar to that for the above-described hermetic terminal may be employed.
【００１３】銅の溶融温度は高いので、メッキ後の気密
端子、封止管は高温で熱処理することが出来る。通常の
ハンダメッキでは１８３℃、鉛メッキでも２９６℃で軟
化するため、通常はハンダメッキで１３０℃、鉛メッキ
でも２００℃以下の熱処理であり、最高でもハンダメッ
キで１５０℃、鉛メッキでも２５０℃以下の熱処理とな
るため、表面及びメッキ被膜に吸蔵されているガスを完
全に除去することができなかったが、銅メッキの場合は
３００℃以上の高温での熱処理が出来るようになった。Since the melting temperature of copper is high, the hermetically sealed terminal and the sealed tube after plating can be heat-treated at a high temperature. Since normal solder plating softens at 183 ° C and lead plating at 296 ° C, heat treatment is usually 130 ° C for solder plating and 200 ° C or less for lead plating, at most 150 ° C for solder plating and 250 ° C for lead plating. Because of the following heat treatment, the gas occluded on the surface and the plating film could not be completely removed. However, in the case of copper plating, heat treatment at a high temperature of 300 ° C. or more became possible.
【００１４】リード線が銅メッキでハンダ付けが難しい
場合は、封止後に通常のハンダメッキを施すことにより
回路基板への実装は従来品と同様に出来る様になる。If the lead wires are difficult to be soldered by copper plating, they can be mounted on a circuit board in the same way as conventional products by applying ordinary solder plating after sealing.
【００１５】[0015]
【発明の効果】気密端子、封止管とも銅メッキを使用し
ているので、封止前に高温の熱処理で脱ガスができ、封
止後の熱処理によって封止管や気密端子表面からガスが
発生することを防止できるようになった。According to the present invention, since both the hermetic terminal and the sealing tube use copper plating, degassing can be performed by high-temperature heat treatment before sealing, and gas can be released from the surface of the sealing tube or hermetic terminal by heat treatment after sealing. Can be prevented from occurring.
【００１６】銅メッキの下地メッキとしてストライク銅
メッキを施すことにより、メッキの密着性を高めること
ができ、圧入の信頼性を向上することができた。By applying strike copper plating as a base plating for copper plating, the adhesion of the plating could be improved, and the reliability of press-fitting could be improved.
【図１】音叉型水晶振動子の分解斜視図FIG. 1 is an exploded perspective view of a tuning fork type crystal resonator.
【図２】気密端子の正面断面図FIG. 2 is a front sectional view of a hermetic terminal.
１ 気密端子 ２ 封止管 ３ リード線 ４ 金属環 ５ 絶縁部材 ６ 音叉型水晶振動片 ７ ストライク銅メッキ ８ 硫酸銅メッキ DESCRIPTION OF SYMBOLS 1 Hermetic terminal 2 Sealing tube 3 Lead wire 4 Metal ring 5 Insulating member 6 Tuning fork type crystal vibrating piece 7 Strike copper plating 8 Copper sulfate plating
Claims (2)
ータイプ圧入型圧電振動子の容器において、気密端子と
封止管の表面にはそれぞれ銅メッキが施されていること
を特徴とするシリンダータイプ圧入型圧電振動子の容
器。1. A cylinder type press-fit type piezoelectric vibrator container comprising a hermetic terminal and a sealing tube, wherein the surfaces of the hermetic terminal and the sealing tube are plated with copper, respectively. Type press-fit type piezoelectric vibrator container.
化銅浴でストライク銅メッキを行い、その上に硫酸銅メ
ッキを施したことを特徴とする請求項１記載のシリンダ
ータイプ圧入型圧電振動子の容器。2. The cylinder-type press-fit type piezoelectric vibrator according to claim 1, wherein the copper plating of the hermetic terminal is performed by strike copper plating in a copper cyanide bath as a base and copper sulfate plating thereon. Container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32710997A JPH11145757A (en) | 1997-11-11 | 1997-11-11 | Container for piezoelectric oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32710997A JPH11145757A (en) | 1997-11-11 | 1997-11-11 | Container for piezoelectric oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11145757A true JPH11145757A (en) | 1999-05-28 |
Family
ID=18195403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32710997A Pending JPH11145757A (en) | 1997-11-11 | 1997-11-11 | Container for piezoelectric oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11145757A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007260940A (en) * | 2006-03-27 | 2007-10-11 | Mitsubishi Paper Mills Ltd | Metal pattern forming method |
| TWI413363B (en) * | 2005-08-30 | 2013-10-21 | Seiko Instr Inc | Surface mount type piezoelectric vibrator and its fabricating method, oscillator, electronic apparatus and radio wave timepiece |
-
1997
- 1997-11-11 JP JP32710997A patent/JPH11145757A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI413363B (en) * | 2005-08-30 | 2013-10-21 | Seiko Instr Inc | Surface mount type piezoelectric vibrator and its fabricating method, oscillator, electronic apparatus and radio wave timepiece |
| JP2007260940A (en) * | 2006-03-27 | 2007-10-11 | Mitsubishi Paper Mills Ltd | Metal pattern forming method |
| JP4624950B2 (en) * | 2006-03-27 | 2011-02-02 | 三菱製紙株式会社 | Method for forming metal pattern |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2008118585A (en) | Electronic component for surface mounting | |
| CN207339795U (en) | A kind of tuning fork-type quartz crystal resonator | |
| JPH11145757A (en) | Container for piezoelectric oscillator | |
| JP2003142614A (en) | Hermetically sealed electronic component | |
| JP2007150235A (en) | Hermetically sealed electronic component | |
| JPS63303505A (en) | Cylinder type crystal vibrator | |
| JP3861280B2 (en) | Hermetically sealed electronic components | |
| JPH0226405A (en) | Cylinder-type crystal resonator | |
| JP2003119591A (en) | Hermetic sealing type electronic part | |
| JP3107414B2 (en) | Quartz crystal resonator and sealing method thereof | |
| JP2010016759A (en) | Air-tightly sealed electronic component | |
| JP2001111379A (en) | Manufacturing method of sealing tube for crystal oscillator | |
| JPH08102639A (en) | Piezoelectric oscillator | |
| JP4411095B2 (en) | Press-fit cylinder type crystal unit | |
| JP2005175654A (en) | Quartz resonator | |
| JP2004088566A (en) | Crystal oscillator | |
| JPH1032447A (en) | Manufacture of force-fitting and sealing type piezoelectric vibrator | |
| JP2005191558A (en) | Hermetically sealed electronic component | |
| JP3558129B2 (en) | Hermetically sealed electronic components | |
| JPH03243007A (en) | Method for sealing small case for crystal resonator | |
| JP3541932B2 (en) | Liquid treatment method | |
| JPH08102634A (en) | Production of piezoelectric vibrator | |
| JPH09139649A (en) | Crystal oscillator and production of the same | |
| JP2001214296A (en) | Airtight terminal for press-in sealing | |
| JPH11136070A (en) | Crystal resonator |