JP3228581B2 - Ceramic heater - Google Patents
Ceramic heaterInfo
- Publication number
- JP3228581B2 JP3228581B2 JP34441692A JP34441692A JP3228581B2 JP 3228581 B2 JP3228581 B2 JP 3228581B2 JP 34441692 A JP34441692 A JP 34441692A JP 34441692 A JP34441692 A JP 34441692A JP 3228581 B2 JP3228581 B2 JP 3228581B2
- Authority
- JP
- Japan
- Prior art keywords
- heating resistor
- lead wire
- ceramic heater
- base
- ceramic
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明はセラミック基体内に発熱
抵抗体を埋設してなるセラミックヒータに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic heater having a heating resistor embedded in a ceramic base.
【０００２】[0002]
【従来の技術】従来、セラミックヒータは通常、図４及
び図５に示すように酸化アルミニウム質焼結体、ステア
タイト質焼結体等の耐熱性セラミックスから成る基体11
内にタングステン、モリブデン等から成る発熱抵抗体12
を所定パターンに埋設するとともに該発熱抵抗体12の両
端部を基体11に切欠部Ａを設けて露出させ、切欠部Ａ内
で露出する発熱抵抗体12の両端にニッケル等から成るリ
ード線13を半田等のロウ材を介しロウ付け取着すること
によって形成されており、リード線13を介して発熱抵抗
体12に一定の電力を印加し、発熱抵抗体12にジュール発
熱を起こさせることによって発熱体として機能する。2. Description of the Related Art Conventionally, as shown in FIGS. 4 and 5, a ceramic heater usually has a substrate 11 made of a heat-resistant ceramic such as an aluminum oxide sintered body or a steatite sintered body.
Heating resistor 12 made of tungsten, molybdenum, etc. inside
Are embedded in a predetermined pattern, and both ends of the heating resistor 12 are provided with cutouts A in the base 11 to be exposed. Lead wires 13 made of nickel or the like are connected to both ends of the heating resistor 12 exposed in the cutouts A. It is formed by brazing and attaching through a brazing material such as solder, and applying a constant power to the heating resistor 12 through the lead wire 13 to cause the heating resistor 12 to generate Joule heat, thereby generating heat. Function as a body.
【０００３】尚、前記セラミックヒータは例えば、基体
11が酸化アルミニウム質焼結体からなる場合、酸化アル
ミニウム(Al 2 O 3 ) 、シリカ(SiO2 ) 、カルシア(Ca
O) 、マグネシア(MgO) 等に適当な有機溶剤、溶媒を添
加混合して泥漿状となすとともにこれを従来周知のドク
ターブレード法やカレンダーロール法によりシート状に
成形してセラミックグリーンシートを得、次に前記セラ
ミックグリーンシートに適当な打ち抜き加工を施すとと
もにタングステン、モリブデン等の高融点金属粉末に適
当な有機溶剤、溶媒を添加混合して得た発熱体ペースト
を従来周知のスクリーン印刷法により所定パターンに印
刷塗布し、しかる後、これらを複数枚積層し、約1600℃
の高温で焼成することによって製作される。[0003] The ceramic heater is, for example, a substrate.
When 11 is made of aluminum oxide sintered body, aluminum oxide (Al 2 O 3 ), silica (SiO 2 ), calcia (Ca
O), magnesia (MgO), etc., an appropriate organic solvent, a solvent is added and mixed to form a slurry, and this is formed into a sheet by a conventionally known doctor blade method or calendar roll method to obtain a ceramic green sheet. Next, the ceramic green sheet is subjected to a suitable punching process, and a heating element paste obtained by adding a suitable organic solvent and a solvent to a high melting point metal powder such as tungsten and molybdenum is mixed in a predetermined pattern by a conventionally known screen printing method. Print and apply, and then a plurality of these are laminated, about 1600 ° C
It is manufactured by firing at a high temperature.
【０００４】また前記基体11内に埋設された発熱抵抗体
12へのリード線13のロウ付けは、露出している発熱抵抗
体12の中央部にリード線13の一端を当接位置合わせする
とともに両者を半田等のロウ材でロウ付けすることによ
って行われる。A heating resistor embedded in the base 11
The soldering of the lead wire 13 to the lead 12 is performed by aligning one end of the lead wire 13 with the exposed central portion of the heating resistor 12 and abutting the two with a brazing material such as solder. .
【０００５】更に前記基体11の一部に形成される切欠部
Ａは基体11と成るセラミックグリーンシートに予め打ち
抜き加工法により孔を開けておくことによって発熱抵抗
体12の両端部に形成される。Further, notches A formed in a part of the base 11 are formed at both ends of the heating resistor 12 by punching holes in advance in a ceramic green sheet serving as the base 11 by a punching method.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、この従
来のセラミックヒータにおいては発熱抵抗体12の露出す
る領域の面積が狭いこと及びリード線13の径が細いこと
等から露出する発熱抵抗体12にリード線13をロウ付け取
着する際、発熱抵抗体12の露出する領域の中央部にリー
ド線13を正確に位置合わせすることが困難でリード線13
が発熱抵抗体12の端部に取着されることがあり、リード
線13が発熱抵抗体12の端部に取着されるとリード線13の
発熱抵抗体12に対するロウ付け強度が弱くなり、リード
線13に外力が印加されると該リード線13が発熱抵抗体12
より外れ、セラミックヒータとしての機能が喪失すると
いう欠点を有していた。However, in this conventional ceramic heater, the exposed area of the heating resistor 12 is small and the diameter of the lead wire 13 is small. When brazing and attaching the wire 13, it is difficult to accurately align the lead wire 13 with the center of the exposed area of the heating resistor 12, and the lead wire 13
May be attached to the end of the heating resistor 12, and when the lead wire 13 is attached to the end of the heating resistor 12, the brazing strength of the lead wire 13 to the heating resistor 12 is reduced, When an external force is applied to the lead wire 13, the lead wire 13
In addition, there is a disadvantage that the function as a ceramic heater is lost.
【０００７】[0007]
【発明の目的】本発明は上記欠点に鑑み案出されたもの
で、その目的はリード線を露出する発熱抵抗体に強固に
ロウ付け取着し、セラミックヒータに発熱体としての機
能を長期間にわたり発揮させることができるセラミック
ヒータを提供することにある。SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned drawbacks, and has as its object to firmly braze and attach a heating resistor exposing a lead wire to a ceramic heater so that the function as a heating element can be maintained for a long time. An object of the present invention is to provide a ceramic heater that can be used over a wide range.
【０００８】[0008]
【課題を解決するための手段】本発明はセラミック基体
内に発熱抵抗体を埋設するとともに該発熱抵抗体の両端
部にセラミック基体に設けた開口を通してリード線を取
着して成るセラミックヒータであって、前記セラミック
基体の開口側壁にリード線が挿入される凹部を設けたこ
とを特徴とするものである。SUMMARY OF THE INVENTION The present invention relates to a ceramic heater having a heating resistor embedded in a ceramic base and lead wires attached to both ends of the heating resistor through openings formed in the ceramic base. A concave portion into which a lead wire is inserted is provided on an opening side wall of the ceramic base.
【０００９】[0009]
【作用】本発明のセラミックヒータによれば発熱抵抗体
の両端を露出させる開口の側壁に凹部を設け、該凹部内
にリード線を挿入させることからリード線は凹部によっ
て露出する発熱抵抗体の上面中央部に位置合わせされ、
その結果、発熱抵抗体とリード線とのロウ付け取着は極
めて強固となり、リード線を介して発熱抵抗体にジュー
ル発熱を起こさせるための所定電力を長期間にわたり確
実に印加することが可能となる。According to the ceramic heater of the present invention, a recess is provided in the side wall of the opening exposing both ends of the heating resistor, and the lead wire is inserted into the recess, so that the lead wire is exposed by the recess. Aligned to the center,
As a result, the brazing between the heating resistor and the lead wire becomes extremely strong, and it is possible to reliably apply a predetermined power for causing Joule heat to the heating resistor via the lead wire for a long period of time. Become.
【００１０】[0010]
【実施例】次ぎに本発明を添付図面に基づき詳細に説明
する。図1 乃至図3 は本発明のセラミックヒータの一実
施例を示し、1 は基体、2 は発熱抵抗体、3 はリード線
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. 1 to 3 show an embodiment of a ceramic heater according to the present invention, wherein 1 is a base, 2 is a heating resistor, and 3 is a lead wire.
【００１１】前記基体1 は酸化アルミニウム質焼結体や
ステアタイト質焼結体等の耐熱性セラミックスから成
り、例えば、酸化アルミニウム質焼結体からなる場合に
は酸化アルミニウム(Al 2 O 3 ) 、シリカ(SiO2 ) 、カ
ルシア(CaO) 、マグネシア(MgO) 等に適当な有機溶剤、
溶媒を添加混合して泥漿状となすとともにこれを従来周
知のドクターブレード法やカレンダーロール法によりシ
ート状に成形してセラミックグリーンシートを得、次に
前記セラミックグリーンシートに適当な打ち抜き加工を
施すとともに複数枚積層し、高温( 約1600℃) で焼成す
ることによって製作される。The substrate 1 is made of a heat-resistant ceramic such as an aluminum oxide sintered body or a steatite sintered body. For example, when the substrate 1 is made of an aluminum oxide sintered body, aluminum oxide (Al 2 O 3 ), Organic solvent suitable for silica (SiO 2 ), calcia (CaO), magnesia (MgO), etc.
A solvent is added and mixed to form a slurry, and this is formed into a sheet by a well-known doctor blade method or calendar roll method to obtain a ceramic green sheet, and then the ceramic green sheet is subjected to an appropriate punching process. It is manufactured by stacking multiple layers and firing at high temperature (about 1600 ° C).
【００１２】前記基体1 はその内部に発熱抵抗体2 が埋
設されており、発熱抵抗体2 を支持するとともに発熱抵
抗体2 を大気から遮断し、発熱抵抗体2 が大気中に含ま
れる水分等によって腐食を受けるのを有効に防止する作
用を為す。The base 1 has a heating resistor 2 embedded therein, supports the heating resistor 2 and shields the heating resistor 2 from the atmosphere. It effectively prevents corrosion.
【００１３】また前記基体1 の内部に埋設されている発
熱抵抗体2 はそれ自体が有する電気抵抗によって一定の
電力が印加されると所定の温度にジュール発熱し、セラ
ミックヒータを発熱体として要求される所定温度に昇温
させる。The heating resistor 2 embedded in the base 1 generates Joule heat to a predetermined temperature when a certain power is applied by the electric resistance of the heating resistor 2 and requires a ceramic heater as a heating element. To a predetermined temperature.
【００１４】前記発熱抵抗体2 はタングステン、モリブ
デン等の金属材料から成り、該タングステン等の金属粉
末に適当な有機溶剤、溶媒を添加混合して得た発熱抵抗
体ペーストを基体1 と成るセラミックグリーンシートに
予め従来周知のスクリーン印刷法より所定パターンに印
刷塗布しておくことによって基体1 の内部に埋設され
る。The heating resistor 2 is made of a metal material such as tungsten or molybdenum, and a heating resistor paste obtained by adding an appropriate organic solvent and a solvent to the metal powder such as tungsten is mixed with a ceramic green material serving as the base 1. The sheet is embedded in the substrate 1 by printing and applying a predetermined pattern on the sheet in advance by a conventionally known screen printing method.
【００１５】前記発熱抵抗体2 はまたその両端が基体1
の端部に導出されており、該端部に導出された両端は基
体1 に設けた開口Ｂにより露出され、リード線３が半田
等のロウ材４を介してロウ付け取着される。The heating resistor 2 has its base 1 at both ends.
The both ends led out to the end are exposed through an opening B provided in the base 1, and the lead wire 3 is brazed and attached via a brazing material 4 such as solder.
【００１６】前記発熱抵抗体2 の両端を露出させる開口
Ｂは発熱抵抗体2 とリード線3 とをロウ付けさせる領域
を形成する作用を為し、基体1 となるセラミックグリー
ンシートに予め打ち抜き加工法により孔をあけておくこ
とによって基体1 の端部に形成される。An opening B for exposing both ends of the heating resistor 2 serves to form a region where the heating resistor 2 and the lead wire 3 are brazed, and is previously punched into a ceramic green sheet serving as the base 1. A hole is formed at the end of the base 1 by forming a hole.
【００１７】前記開口Ｂは更にその側壁にリード線３の
径に対応した大きさの凹部5 が形成されており、開口Ｂ
内において発熱抵抗体2 とリード線3 とをロウ付けする
際、開口Ｂの側壁に形成した凹部5 内にリード線3 を挿
入させればリード線3 を露出する発熱抵抗体2 の上面中
央部に正確に位置合わせでき、これによってリード線3
を発熱抵抗体2 にロウ材4 を介し極めて強固にロウ付け
取着することが可能となる。The opening B is further provided with a recess 5 having a size corresponding to the diameter of the lead wire 3 on the side wall thereof.
When the heating resistor 2 and the lead wire 3 are brazed in the inside, if the lead wire 3 is inserted into the recess 5 formed in the side wall of the opening B, the center of the upper surface of the heating resistor 2 exposing the lead wire 3 Position of the lead wire 3
Can be extremely firmly brazed and attached to the heat generating resistor 2 via the brazing material 4.
【００１８】また前記開口Ｂにおいて発熱抵抗体2 にロ
ウ付けされるリード線3 はニッケル等の金属から成り、
該リード線3 は発熱抵抗体2 を外部電気回路に接続させ
るとともに外部電気回路より発熱抵抗体2 に所定の温度
にジュール発熱を起こすに必要な一定の電力を供給する
作用を為す。The lead wire 3 brazed to the heating resistor 2 in the opening B is made of a metal such as nickel.
The lead wire 3 serves to connect the heating resistor 2 to an external electric circuit and to supply a constant electric power required for causing the heating resistor 2 to generate Joule heat to a predetermined temperature from the external electric circuit.
【００１９】前記リード線3 は露出する発熱抵抗体2 の
上面中央部に開口Ｂの側壁に設けた凹部5 を利用して正
確に当接させるとともにその当接部に溶融する半田等の
ロウ材4 を供給することによって発熱抵抗体2 に強固に
ロウ付け取着される。The lead wire 3 is accurately brought into contact with the central portion of the upper surface of the exposed heating resistor 2 by using the concave portion 5 provided on the side wall of the opening B, and a brazing material such as solder melted at the contact portion. 4 is firmly brazed and attached to the heating resistor 2.
【００２０】かくして、本発明のセラミックヒータによ
ればリード線3 を介して発熱抵抗体2 に一定の電力を供
給し、発熱抵抗体2 を一定の温度にジュール発熱させる
ことによって発熱体として機能する。Thus, according to the ceramic heater of the present invention, a constant power is supplied to the heating resistor 2 via the lead wire 3 to cause the heating resistor 2 to generate Joule heat to a constant temperature to function as a heating element. .
【００２１】尚、本発明は上述の実施例に限定されるも
のではなく、本発明の要旨を逸脱しない範囲であれば種
々の変更は可能であり、例えば上述の実施例では露出す
る発熱抵抗体2 に半田等のロウ材を介してリード線3 を
取着したが、その取着を開口Ｂ内に樹脂やガラス等を充
填することによって補強したり、開口Ｂ内に耐熱性の材
料を充填するとともにこれを絶縁板で覆うことによって
補強してもよい。この場合、発熱抵抗体2 とリード線3
との取着がより強固となり、好適である。It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. The lead wire 3 was attached to 2 via a brazing material such as solder, but the attachment was reinforced by filling the opening B with resin or glass, or the opening B was filled with a heat-resistant material. Alternatively, it may be reinforced by covering it with an insulating plate. In this case, heating resistor 2 and lead 3
Is more firmly attached, which is preferable.
【００２２】また上述の実施例では発熱抵抗体2 に半田
等のロウ材を介してリード線3 を取着したが発熱抵抗体
2 上にリード線3 を当接させるとともにその当接を開口
Ｂ内に樹脂やガラス等を充填し維持することによって取
着してもよい。In the above embodiment, the lead wire 3 was attached to the heating resistor 2 via a brazing material such as solder.
The lead wire 3 may be brought into contact with the upper surface 2 and the contact may be made by filling and maintaining the resin or glass in the opening B.
【００２３】[0023]
【発明の効果】本発明のセラミックヒータよれば、発熱
抵抗体の両端を露出させる開口の側壁に凹部を設け、該
凹部内にリード線を挿入させることからリード線は凹部
によって露出する発熱抵抗体の上面中央部に位置合わせ
され、その結果、発熱抵抗体とリード線とのロウ付け取
着は極めて強固となり、リード線を介して発熱抵抗体に
ジュール発熱を起こさせるための所定電力を長期間にわ
たり確実に印加することが可能となる。According to the ceramic heater of the present invention, a recess is provided in a side wall of an opening exposing both ends of a heating resistor, and a lead wire is inserted into the recess, so that the lead wire is exposed by the recess. As a result, the brazing connection between the heating resistor and the lead wire becomes extremely strong, and a predetermined power for causing the heating resistor to generate Joule heat through the lead wire is applied for a long time. Can be applied reliably.
【図１】本発明のセラミックヒータの一実施例を示す平
面図である。FIG. 1 is a plan view showing an embodiment of a ceramic heater according to the present invention.
【図２】図１のＩーＩ線断面図である。FIG. 2 is a sectional view taken along line II of FIG.
【図３】図１の一部拡大斜視図である。FIG. 3 is a partially enlarged perspective view of FIG. 1;
【図４】従来のセラミックヒータの平面図である。FIG. 4 is a plan view of a conventional ceramic heater.
【図５】図４のIIーII線断面図である。FIG. 5 is a sectional view taken along line II-II of FIG.
１・・・・・基体 ２・・・・・発熱抵抗体 ３・・・・・リード線 ４・・・・・ロウ材 ５・・・・・凹部 Ｂ・・・・・開口 DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Heating resistor 3 ... Lead wire 4 ... Brazing material 5 ... Recess B ... Opening
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H05B 3/02 H05B 3/14 H05B 3/18 H05B 3/20 Continuation of the front page (58) Field surveyed (Int.Cl. 7 , DB name) H05B 3/02 H05B 3/14 H05B 3/18 H05B 3/20
Claims (1)
とともに該発熱抵抗体の両端部にセラミック基体に設け
た開口を通してリード線を取着して成るセラミックヒー
タであって、前記セラミック基体の開口側壁に凹部を設
け、該凹部にリード線を挿入してロウ付けしたことを特
徴とするセラミックヒータ。1. A ceramic heater comprising: a heating resistor embedded in a ceramic base; and lead wires attached to both ends of the heating resistor through openings provided in the ceramic base. set a recess in the side wall
A lead wire inserted into the recess and brazed .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34441692A JP3228581B2 (en) | 1992-12-24 | 1992-12-24 | Ceramic heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34441692A JP3228581B2 (en) | 1992-12-24 | 1992-12-24 | Ceramic heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06196253A JPH06196253A (en) | 1994-07-15 |
| JP3228581B2 true JP3228581B2 (en) | 2001-11-12 |
Family
ID=18369087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34441692A Expired - Lifetime JP3228581B2 (en) | 1992-12-24 | 1992-12-24 | Ceramic heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3228581B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4028149B2 (en) * | 2000-02-03 | 2007-12-26 | 日本碍子株式会社 | Heating device |
| GB2429892B (en) * | 2004-05-27 | 2008-05-21 | Kyocera Corp | Ceramic heater,and oxygen sensor and hair iron using the ceramic heater |
| CA2711015A1 (en) * | 2007-12-29 | 2009-07-09 | Saint-Gobain Ceramics & Plastics, Inc. | Ceramic heating elements |
| DE102008037206B4 (en) * | 2008-08-11 | 2014-07-03 | Heraeus Sensor Technology Gmbh | 300 ° C-Flow Sensor |
| WO2023210434A1 (en) * | 2022-04-27 | 2023-11-02 | 京セラ株式会社 | Heating device |
-
1992
- 1992-12-24 JP JP34441692A patent/JP3228581B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06196253A (en) | 1994-07-15 |
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