JPS599510B2 - Manufacturing method of ceramic piezoelectric material for spark plugs - Google Patents
Manufacturing method of ceramic piezoelectric material for spark plugsInfo
- Publication number
- JPS599510B2 JPS599510B2 JP54132539A JP13253979A JPS599510B2 JP S599510 B2 JPS599510 B2 JP S599510B2 JP 54132539 A JP54132539 A JP 54132539A JP 13253979 A JP13253979 A JP 13253979A JP S599510 B2 JPS599510 B2 JP S599510B2
- Authority
- JP
- Japan
- Prior art keywords
- copper
- ceramic
- manufacturing
- ceramic body
- 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.)
- Expired
Links
Description
【発明の詳細な説明】
圧電性セラミックを用いた点火栓は、近年ガス器具、ラ
イター、起爆装置などに広く用いられている。DETAILED DESCRIPTION OF THE INVENTION Spark plugs using piezoelectric ceramics have recently been widely used in gas appliances, lighters, detonators, and the like.
従来知られている圧電性セラミックを用いた点火栓は第
３図に示すような構造のものであつた。図中１、１’！
ま圧電性セラミック体であり、夫々のセラミック体の対
向面に銀被覆面５、５’を形成し、この面の間に銅電極
２を配置する。この電極は通常高圧側電極といわれてい
る。またセラミック体の他の端面には銀電極３、３’を
形成し、この電極にバネ６、６’を夫々設置し、矢印方
向に押圧し、セラミック体による銅電極の挾持を行う。
銅電極にはリード線４を連結する。電極３、３！は通常
接地側電極といわれるものである。このような構造であ
るため、セラミック体とその間に挾んだ銅電極の接合は
完全ではなく、そのため充分なエネルギーを取り出すこ
とができず、また構造も複雑であり、これが故障の一つ
の原因となつていた。A conventionally known spark plug using piezoelectric ceramic had a structure as shown in FIG. 1, 1'!
It is also a piezoelectric ceramic body, with silver coated surfaces 5, 5' formed on opposing surfaces of each ceramic body, and a copper electrode 2 disposed between these surfaces. This electrode is usually called the high voltage side electrode. Further, silver electrodes 3 and 3' are formed on the other end face of the ceramic body, and springs 6 and 6' are installed on these electrodes, respectively, and pressed in the direction of the arrow, so that the copper electrode is held between the ceramic body.
A lead wire 4 is connected to the copper electrode. Electrode 3, 3! is usually called the ground side electrode. Due to this structure, the bond between the ceramic body and the copper electrode sandwiched between them is not perfect, so it is not possible to extract enough energy, and the structure is complex, which is one of the causes of failure. I was getting used to it.
本発明者はこのような問題点について検討し、セラミッ
ク体と銅電極を完全に接合すべく研究を行つた。The inventors of the present invention have considered these problems and conducted research to completely bond the ceramic body and the copper electrode.
そして、銅とセラミックとは通常は良好な接着性を示さ
ないが、特定の雰囲気で特定の温度で加熱すると強固に
接合するという知見を得、この知見をセラミック点火栓
に適用することによつて、従来の問題点を解決した新規
な点火栓の製造方法を提供することに成功したのである
。セラミックに銅粉を載置し、１／２００〜１／１００
０体積％程度の酸素と、不活性ガス残部とからなる雰囲
気中で１０６５０Ｃ〜１０８３℃の温度に保つと、銅と
セラミックは強固に接着し、接着強度は１４００ｋｇ／
粛にも及ぶことが知られた。この現象を利用し、一対の
圧電性セラミック体の間に銅粉又は銅箔を挾み、前述の
条件下に加熱すると、セラミック体は銅を介して非常に
強固に接着するばかりでなく、銅の接着層が高圧側電極
として作用するという従来技術からは到底予想できない
事実が本発明者により見出されたのである。本発明を図
面について説明すると、第１図の１、丁は夫々圧電性セ
ラミック体を示し、２で示される銅層により一体に接合
されている。この２の銅層はまた高圧側電極として作用
するものであつて、リード線４が結合されている。セラ
ミツク体１，Ｖの他の端面には接地側電極３，３′が設
けられるが、この電極は、高圧側電極２と同じように銅
を用いて形成してもよく、また従来用いられている銀焼
付法など適当な方法で形成することができ、用いる金属
も金、白金など自由である。They also discovered that although copper and ceramic do not normally exhibit good adhesion, they form a strong bond when heated in a specific atmosphere at a specific temperature, and by applying this knowledge to ceramic spark plugs. They succeeded in providing a new method for manufacturing spark plugs that solved the problems of the conventional method. Place copper powder on ceramic, 1/200 to 1/100
When maintained at a temperature of 10,650C to 1,083C in an atmosphere containing about 0% by volume of oxygen and the remainder of inert gas, copper and ceramic adhere firmly, with an adhesive strength of 1,400kg/
It has been known that it can even be severe. Taking advantage of this phenomenon, if copper powder or copper foil is sandwiched between a pair of piezoelectric ceramic bodies and heated under the conditions described above, the ceramic bodies will not only be bonded very strongly through the copper, but also The inventor of the present invention has discovered a fact that could not have been expected from the prior art, that the adhesive layer acts as a high voltage side electrode. The present invention will be explained with reference to the drawings. In FIG. 1, numerals 1 and 1 each indicate piezoelectric ceramic bodies, which are joined together by a copper layer, numeral 2. This second copper layer also serves as a high-voltage side electrode, and a lead wire 4 is connected thereto. Ground side electrodes 3, 3' are provided on the other end faces of the ceramic bodies 1, V, but these electrodes may be formed using copper in the same way as the high voltage side electrode 2, or may be made of copper, which is conventionally used. It can be formed by any suitable method such as silver baking, and any metal can be used, such as gold or platinum.
また第２図に示すように、夫々のセラミツク体１，Ｖの
端面に夫々銅粉や銅箔を載置し、前述の条件下で加熱し
て、銅がセラミツクに強固に接着した銅被覆面７，γを
形成しておき、この面を接触させて加熱し、銅面を互い
に接合させて、セラミツク体を接合してもよい。Further, as shown in Fig. 2, copper powder or copper foil is placed on the end face of each ceramic body 1, V, and heated under the above-mentioned conditions to form a copper coated surface where the copper is firmly adhered to the ceramic. 7, γ may be formed in advance, and the ceramic bodies may be joined by bringing these surfaces into contact and heating to join the copper surfaces to each other.
更につき合せた銅被覆面間に銅粉や銅板を挿入したり、
リード線を挿入して加熱接合してもよい。本発明により
製造された点火栓は、セラミツク体が非常に強固に接合
されており、効率よくエネルギーを取り出すことができ
、構造も従来の点火栓に較べて非常に簡単であり、故障
がほとんどないという優れた作用効果を奏するものであ
る。Furthermore, inserting copper powder or a copper plate between the butt-coated copper surfaces,
A lead wire may be inserted and heat bonded. The spark plug manufactured according to the present invention has a ceramic body that is very firmly bonded, can extract energy efficiently, and has a much simpler structure than conventional spark plugs, with almost no failures. It has excellent functions and effects.
本発明で用いる圧電性セラミツク体は、円柱状、角柱状
、板状など必要と目的に応じどのような形状のものでも
使用できる。リＬド線は前記のようにセラミツク体の接
合時に同時に接合させることもできるが、ろう接などに
より後で結合してもよい。The piezoelectric ceramic body used in the present invention can be of any shape depending on necessity and purpose, such as cylindrical, prismatic, or plate-like. The lead wires can be joined simultaneously when the ceramic bodies are joined as described above, but they may also be joined later by soldering or the like.
つぎに、本発明の圧電性セラミツク点火栓の実施例を示
す。Next, examples of the piezoelectric ceramic spark plug of the present invention will be shown.
実施例 １
直径８ｍ１１長さ１５ｍ７７！の円柱状のチタン酸−ジ
ルコン酸鉛セラミツク体の円形面に１００メツシユの銅
粉を載置する。Example 1 Diameter 8m11 Length 15m77! 100 meshes of copper powder were placed on the circular surface of the cylindrical lead titanate-zirconate ceramic body.
同じ形状の同じセラミツク体の円形面を静かに載せて銅
粉を挟持し、１／５００体積％の酸素を含んだ窒素ガス
中で１０７０℃で８分間加熱し，てセラミツク体を結合
した。このとき２ケのセラミツク体のうち、上部にある
セラミツク体の他の円形面にも銅粉を載置しておき、セ
ラミツク体同士の結合と同時に銅とセラミツクの接合に
より銅接地側電極を形成する。つぎに電極を形成してい
ないセラミツク体の円形面を上にして銅粉を載せ、同様
に処理して接地側電極を形成した。セラミツク体同士を
結合すると同時にそれ自体が高圧側電極となつているセ
ラミツク体間に形成された銅層に、リード線をハンダで
結合して点火栓が得られた。セラミツク体の接着強度は
、多少のバラツキはあつたが約１４００１＜９／Ｃｌ７
ｌであつた。A circular surface of the same ceramic body having the same shape was gently placed on the ceramic body to sandwich the copper powder, and the ceramic body was bonded by heating at 1070° C. for 8 minutes in nitrogen gas containing 1/500% by volume of oxygen. At this time, copper powder is placed on the other circular surface of the upper ceramic body among the two ceramic bodies, and at the same time as the ceramic bodies are bonded together, a copper grounding side electrode is formed by bonding the copper and the ceramic. do. Next, copper powder was placed on the ceramic body on which no electrode was formed, with the circular side facing up, and the same process was performed to form a ground side electrode. A spark plug was obtained by bonding lead wires with solder to a copper layer formed between the ceramic bodies, which itself served as a high-voltage electrode. The adhesive strength of the ceramic body was approximately 14001<9/Cl7, although there was some variation.
It was l.
後の分極処理は従来法によれば充分である。A conventional method is sufficient for the subsequent polarization treatment.
第１図と第２図は本発明により製造された圧電性セラミ
ツタ点火栓を示し、第３図は従来知られている圧電性セ
ラミツク点火栓を示す。1 and 2 show a piezoelectric ceramic spark plug manufactured according to the present invention, and FIG. 3 shows a piezoelectric ceramic spark plug known in the art.
Claims (1)
向面間に銅を配置し、１／２００〜１／１０００体積％
の酸素と、不活性ガス残部とからなる雰囲気中で１０６
５〜１０８３℃に加熱することにより、銅を介してセラ
ミック体を接合すると同時に高圧側電極２を形成するこ
とを特徴とする、点火栓用セラミック圧電体の製造方法
。 ２ 一対の圧電性セラミック体１、１′の夫々の一端面
に銅を配置し、１／２００〜１／１０００体積％の酸素
と、不活性ガス残部とからなる雰囲気中で１０６５〜１
０８３℃に加熱して銅とセラミック体とを接合し、次い
で銅面を互いに接合してセラミック体を一体に結合する
と同時に高圧側電極２を形成することを特徴とする、点
火栓用セラミック圧電体の製造方法。[Claims] 1. A pair of piezoelectric ceramic bodies 1 and 1' are opposed to each other, and copper is arranged between the opposing surfaces, and copper is 1/200 to 1/1000% by volume.
of oxygen and the remainder of the inert gas.
A method for manufacturing a ceramic piezoelectric body for a spark plug, characterized in that a high-voltage side electrode 2 is formed at the same time as bonding a ceramic body via copper by heating to 5 to 1083°C. 2. Copper is placed on one end surface of each of the pair of piezoelectric ceramic bodies 1 and 1', and copper is heated to 1065 to 1 in an atmosphere consisting of 1/200 to 1/1000 volume % oxygen and the remainder of the inert gas.
A ceramic piezoelectric body for a spark plug, characterized in that the copper and the ceramic body are bonded by heating to 083°C, and then the copper surfaces are bonded to each other to unite the ceramic body and at the same time form a high voltage side electrode 2. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54132539A JPS599510B2 (en) | 1979-10-15 | 1979-10-15 | Manufacturing method of ceramic piezoelectric material for spark plugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54132539A JPS599510B2 (en) | 1979-10-15 | 1979-10-15 | Manufacturing method of ceramic piezoelectric material for spark plugs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5571676A JPS5571676A (en) | 1980-05-29 |
| JPS599510B2 true JPS599510B2 (en) | 1984-03-02 |
Family
ID=15083636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54132539A Expired JPS599510B2 (en) | 1979-10-15 | 1979-10-15 | Manufacturing method of ceramic piezoelectric material for spark plugs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS599510B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3744120A (en) * | 1972-04-20 | 1973-07-10 | Gen Electric | Direct bonding of metals with a metal-gas eutectic |
| US3766634A (en) * | 1972-04-20 | 1973-10-23 | Gen Electric | Method of direct bonding metals to non-metallic substrates |
| JPS4960310A (en) * | 1972-08-28 | 1974-06-12 |
-
1979
- 1979-10-15 JP JP54132539A patent/JPS599510B2/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3744120A (en) * | 1972-04-20 | 1973-07-10 | Gen Electric | Direct bonding of metals with a metal-gas eutectic |
| US3766634A (en) * | 1972-04-20 | 1973-10-23 | Gen Electric | Method of direct bonding metals to non-metallic substrates |
| JPS4960310A (en) * | 1972-08-28 | 1974-06-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5571676A (en) | 1980-05-29 |
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