JPH01187802A - Manufacture of thermistor - Google Patents
Manufacture of thermistorInfo
- Publication number
- JPH01187802A JPH01187802A JP1227288A JP1227288A JPH01187802A JP H01187802 A JPH01187802 A JP H01187802A JP 1227288 A JP1227288 A JP 1227288A JP 1227288 A JP1227288 A JP 1227288A JP H01187802 A JPH01187802 A JP H01187802A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- thermistor element
- glass tube
- thermistor
- approximately
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000011521 glass Substances 0.000 claims abstract description 94
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910019590 Cr-N Inorganic materials 0.000 description 1
- 229910019588 Cr—N Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 244000171726 Scotch broom Species 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、サーミスタ素子をガラスで封止したサーミス
タの製造方法に関し、サーミスタ素子をガラス管の略中
央部に挿入配置し、ガラス管の内部のサーミスタ素子の
周囲をガラスで覆い、ガラス管及びガラスを溶融させ、
サーミスタ素子を略球形状のガラス層の略中心部に位置
させて封止することにより、ガラスのクラックを防止で
きるようにすると共に、熱応答性を均一化できるように
したものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for manufacturing a thermistor in which a thermistor element is sealed with glass, in which the thermistor element is inserted and arranged approximately in the center of a glass tube, and the inside of the glass tube is sealed. Cover the thermistor element with glass, melt the glass tube and glass,
By locating and sealing the thermistor element approximately at the center of the approximately spherical glass layer, cracks in the glass can be prevented and thermal response can be made uniform.
〈従来の技術〉
第６図は従来よりよく知られているガラスビード型サー
ミスタの断面図で、１はサーミスタ素子、２はガラス、
３．４はリード線、５．６は耐熱導電接合材である。サ
ーミスタ素子１はサーミスタ素体１０１の両面に電極１
０２．１０３を設けてなり、電極１０２．１０３のそれ
ぞれに、耐熱性導電接合材５．６によってリード線３．
４の一端部を固着させ、リード線３．４を間隔を隔てて
同一の方向に導出したうえで、ガラス２で封止した構造
となっている。ガラス２はほぼ楕円形状になっていて、
その先端部寄りにサーミスタ素子１を位置させて封止し
である。<Prior art> Fig. 6 is a cross-sectional view of a conventionally well-known glass bead type thermistor, in which 1 is a thermistor element, 2 is a glass bead,
3.4 is a lead wire, and 5.6 is a heat-resistant conductive bonding material. The thermistor element 1 has electrodes 1 on both sides of the thermistor body 101.
02.103 are provided, and each of the electrodes 102.103 is connected to a lead wire 3.
4 is fixed at one end, lead wires 3.4 are led out in the same direction at intervals, and then sealed with glass 2. Glass 2 has an almost oval shape,
The thermistor element 1 is positioned near the tip and sealed.
リード線３．４としては、ジュメット線、Ｃｕ合金線、
Ｆｅ−Ｎｉ系合金線、Ｆｅ −Ｎｉ −Ｇｏ系合金線、
Ｎｉ−Ｃｒ系合金線等を芯線とし、その表面にＣｒ−Ｎ
ｆ系メツキ、ＮＩ系メツキまたはＮ［−Ｐメツキ皮膜を
被着させたものが使用される。リード線３．４は耐熱性
を高めるため白金等の貴金属線によって構成する場合も
ある。As the lead wire 3.4, Dumet wire, Cu alloy wire,
Fe-Ni alloy wire, Fe-Ni-Go alloy wire,
The core wire is made of Ni-Cr alloy wire, etc., and the surface is coated with Cr-N.
F-based plating, NI-based plating, or those coated with N[-P plating are used. The lead wires 3.4 may be made of noble metal wires such as platinum to improve heat resistance.
〈発明が解決しようとする問題点〉
しかしながら、上述した従来のサーミスタには次のよう
な問題点がある。<Problems to be Solved by the Invention> However, the conventional thermistor described above has the following problems.
（イ）ガラス２が楕円形状になっていて、しかもサーミ
スタ素子１がガラス２の中心部から外れた先端部寄り配
置されているため、僅かの位置ズレを生じただけで、サ
ーミスタ素子１の周囲のガラス２の層厚が変化してしま
う。このため、熱応答性が個々の製品によって浮動して
しまうという問題点があった。(a) Since the glass 2 has an elliptical shape and the thermistor element 1 is placed closer to the tip of the glass 2 than the center of the glass 2, even a slight positional shift will cause damage to the periphery of the thermistor element 1. The layer thickness of the glass 2 changes. For this reason, there was a problem in that the thermal responsiveness varied depending on the individual product.
（ロ）ガラス２が楕円形状であるため、サーミスタ素子
１のまわりのガラス２の厚みが、方向によって異なる。(b) Since the glass 2 has an elliptical shape, the thickness of the glass 2 around the thermistor element 1 varies depending on the direction.
このため、偏肉による応力歪が発生し、ガラス２にクラ
ックが発生し易いという問題点があった。For this reason, there was a problem in that stress strain was generated due to uneven thickness, and cracks were likely to occur in the glass 2.
〈問題点を解決するための手段〉
上述する従来の問題点を解決するため、本発明に係るサ
ーミスタの製造方法は、サーミスタ素子を、ガラス管の
略中央部に挿入配置し、かつ、ガラス管の内部の前記サ
ーミスタ素子の周囲を前記ガラス管よりも低融点のガラ
スで覆い１．前記ガラス管及び前記ガラスを溶融させ、
前記サーミスタ素子を略球形状のガラス層の略中心部に
位置させて封止したことを特徴とする。<Means for Solving the Problems> In order to solve the above-mentioned conventional problems, a method for manufacturing a thermistor according to the present invention includes inserting and arranging a thermistor element approximately in the center of a glass tube, and 1. Covering the thermistor element inside with glass having a lower melting point than the glass tube; melting the glass tube and the glass;
The present invention is characterized in that the thermistor element is positioned and sealed at approximately the center of the approximately spherical glass layer.
く作用〉
サーミスタ素子をガラス管の略中央部に挿入配置し、か
つ、ガラス管の内部のサーミスタ素子の周囲をガラス管
よりは低融点のガラスで覆い、ガラス管及びガラスを溶
融させると、最初にサーミスタ素子の周囲のガラスが溶
融して、サーミスタ素子の表面に被着し、次にガラス管
が溶融する。Effect> When the thermistor element is inserted into the approximate center of the glass tube, and the periphery of the thermistor element inside the glass tube is covered with glass whose melting point is lower than that of the glass tube, the glass tube and glass are melted. The glass surrounding the thermistor element melts and adheres to the surface of the thermistor element, and then the glass tube melts.
これにより、サーミスタ素子を略球形状のガラス層の略
中心部に位置させて封止したサーミスタが得られる。こ
うして得られたサーミスタは、サーミスタ素子のまわり
のガラスの厚みが均一化されており、熱応答性のバラツ
キが小さくなる。また、サーミスタ素子のまわりのガラ
スの層厚の均一化により、応力歪が小さくなり、組立ま
たは各種試験時にガラスにクラックが入りにくくなる。As a result, a thermistor is obtained in which the thermistor element is positioned and sealed at the substantially center of the substantially spherical glass layer. In the thermistor thus obtained, the thickness of the glass around the thermistor element is made uniform, and variations in thermal response are reduced. Furthermore, by making the thickness of the glass layer around the thermistor element uniform, stress strain is reduced, and the glass is less likely to crack during assembly or various tests.
〈実施例〉
第１図及び第２図は本発明に係るサーミスタの製造方法
を示す図である。まず、第１図に示すように、サーミス
タ素体１０１の両面に電極１０２．１０３を設け、電極
１０２．１０３のそれぞれに、耐熱性導電接合材５．６
によってリード線３．４の一端部を固着させたサーミス
タ素子１を、ガラス管２１の内部の略中心に挿入配置す
ると共に、ガラス管２１の内部のサーミスタ素子１の周
囲にガラス粉２２を詰める。この後、加熱して、ガラス
粉２２及びガラス管２１を溶融させ、第２図に示す如く
、サーミスタ素子１を、略球形状のガラス層２の略中心
部に位置させてガラス封止する。<Example> FIGS. 1 and 2 are diagrams showing a method for manufacturing a thermistor according to the present invention. First, as shown in FIG.
The thermistor element 1 to which one end of the lead wire 3.4 is fixed is inserted and arranged approximately at the center inside the glass tube 21, and glass powder 22 is packed around the thermistor element 1 inside the glass tube 21. Thereafter, the glass powder 22 and the glass tube 21 are heated to melt, and as shown in FIG. 2, the thermistor element 1 is positioned approximately at the center of the approximately spherical glass layer 2 and sealed with glass.
ガラス粉２２は線膨張係数がガラス管２１と近似し、ガ
ラス管２１よりは低融点のガラス材料によって構成する
。従って、加熱溶融工程では、最初にガラス粉２２が溶
融して、サーミスタ素子１の表面に被着し、次にガラス
管２１が溶融する。The glass powder 22 has a coefficient of linear expansion similar to that of the glass tube 21, and is made of a glass material having a lower melting point than the glass tube 21. Therefore, in the heating and melting step, the glass powder 22 is first melted and adhered to the surface of the thermistor element 1, and then the glass tube 21 is melted.
これにより、サーミスタ素子１を略球形状のガラス層２
の略中心部に位置させて封止した第２図に示すサーミス
タが得られる。こうして得られたサーミスタは、サーミ
スタ素子１のまわりのガラス槽２の厚みが均一化されて
おり、熱応答性のバラツキが小さくなる。また、サーミ
スタ素子１のまわりのガラス槽２の層厚の均一化により
、応力歪が小さくなり、組立または各種試験時にガラス
にクラックが入りにくくなる。This allows the thermistor element 1 to be connected to the approximately spherical glass layer 2.
The thermistor shown in FIG. 2 is obtained which is sealed at approximately the center of the. In the thermistor thus obtained, the thickness of the glass bath 2 around the thermistor element 1 is made uniform, and variations in thermal response are reduced. Further, by making the layer thickness of the glass tank 2 around the thermistor element 1 uniform, stress strain is reduced, and the glass is less likely to crack during assembly or various tests.
第３図〜第５図は本発明に係るサーミスタの製造方法の
別の実施例における工程を示す図である。まず、第３図
に示すように、サーミスタ素子１を底付きのガラス管２
２の内部に、矢印ａの如く挿入し、更に、第４図に示す
ように、ガラス管２２と線膨張係数の近似した底付きの
ガラス管２１を用意し、このガラス管２１の内部の略中
心部に、サーミスタ素子１を入れたガラス管２２を挿入
配置し、加熱溶融させる。これにより、第２図に示した
ように、サーミスタ素子１の周囲を略球形状のガラス２
によって封止したサーミスタが得られる。ガラス管２２
はガラス管２１よりも低融点のガラスによって構成する
。また、ガラス管２２を溶融させてサーミスタ素子１の
表面に被着させた後に、ガラス管２１内に挿入し、ガラ
ス管２１を加熱溶融させてもよい。3 to 5 are diagrams showing steps in another embodiment of the thermistor manufacturing method according to the present invention. First, as shown in FIG. 3, the thermistor element 1 is placed in a glass tube with a bottom.
As shown in FIG. A glass tube 22 containing the thermistor element 1 is inserted into the center and heated and melted. As a result, as shown in FIG. 2, a substantially spherical glass 2
A sealed thermistor is obtained. glass tube 22
is made of glass having a lower melting point than the glass tube 21. Alternatively, after the glass tube 22 is melted and adhered to the surface of the thermistor element 1, it may be inserted into the glass tube 21 and the glass tube 21 may be heated and melted.
〈発明の効果〉
以上述べたように、本発明によれば、次のような効果が
得られる。<Effects of the Invention> As described above, according to the present invention, the following effects can be obtained.
（ａ）サーミスタ素子を封止するガラスを略球形状とし
、このガラスの略中心部にサーミスタ素子を位置させ、
サーミスタ素子のまわりのガラスの厚みを均一化し、熱
応答性のバラツキの小さくしたサーミスタを製造できる
。(a) The glass that seals the thermistor element is approximately spherical, and the thermistor element is located approximately at the center of the glass;
By making the thickness of the glass around the thermistor element uniform, it is possible to manufacture a thermistor with reduced variation in thermal response.
（ｂ）サーミスタ素子のまわりのガラスの層厚の均一化
により、応力歪が小さく、ガラスにクラックの入りにく
いサーミスタを製造できる。(b) By making the thickness of the glass layer around the thermistor element uniform, it is possible to manufacture a thermistor with low stress strain and less cracking in the glass.
第１図及び第２図は本発明に係るサーミスタの製造工程
を示す図、第３図〜第５図は同じく別の実施例における
製造工程を示す図、第６図は従来のサーミスタの断面図
である。
１・・・サーミスタ素子 ２１・・・ガラス管２２・
・・ガラス
第１ｘ 箒２０
霞３図 第４− か５匡FIGS. 1 and 2 are diagrams showing the manufacturing process of the thermistor according to the present invention, FIGS. 3 to 5 are diagrams showing the manufacturing process in another embodiment, and FIG. 6 is a cross-sectional view of a conventional thermistor. It is. 1... Thermistor element 21... Glass tube 22.
...Glass 1x Broom 20 Kasumi 3 Figure 4- or 5 squares
Claims (1)
かつ、ガラス管の内部の前記サーミスタ素子の周囲を前
記ガラス管よりも低融点のガラスで覆い、前記ガラス管
及び前記ガラスを溶融させ、前記サーミスタ素子を略球
形状のガラス層の略中心部に位置させて封止したことを
特徴とするサーミスタの製造方法。The thermistor element is inserted and arranged approximately in the center of the glass tube,
and covering the periphery of the thermistor element inside the glass tube with glass having a lower melting point than the glass tube, melting the glass tube and the glass, and placing the thermistor element approximately in the center of the approximately spherical glass layer. A method for manufacturing a thermistor, characterized in that the thermistor is positioned and sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1227288A JPH01187802A (en) | 1988-01-22 | 1988-01-22 | Manufacture of thermistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1227288A JPH01187802A (en) | 1988-01-22 | 1988-01-22 | Manufacture of thermistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01187802A true JPH01187802A (en) | 1989-07-27 |
Family
ID=11800730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1227288A Pending JPH01187802A (en) | 1988-01-22 | 1988-01-22 | Manufacture of thermistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01187802A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444102U (en) * | 1990-08-14 | 1992-04-15 |
-
1988
- 1988-01-22 JP JP1227288A patent/JPH01187802A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444102U (en) * | 1990-08-14 | 1992-04-15 |
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