JPS6228722Y2 - - Google Patents
Info
- Publication number
- JPS6228722Y2 JPS6228722Y2 JP18692981U JP18692981U JPS6228722Y2 JP S6228722 Y2 JPS6228722 Y2 JP S6228722Y2 JP 18692981 U JP18692981 U JP 18692981U JP 18692981 U JP18692981 U JP 18692981U JP S6228722 Y2 JPS6228722 Y2 JP S6228722Y2
- Authority
- JP
- Japan
- Prior art keywords
- dependent resistor
- voltage
- surge absorber
- surge
- current flows
- 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
Landscapes
- Thermistors And Varistors (AREA)
Description
【考案の詳細な説明】
本考案は開閉サージおよび誘導雷サージなどの
瞬間的な過電圧から各種電子機器、半導体等を保
護するのに利用するサージ吸収器に関するもので
ある。[Detailed Description of the Invention] The present invention relates to a surge absorber used to protect various electronic devices, semiconductors, etc. from momentary overvoltages such as switching surges and induced lightning surges.
円柱形の電圧依存性抵抗体の両端に金属製キヤ
ツプを設けた構造のサージ吸収器の従来例として
は、第１図に示すようなものがある。この従来例
のサージ吸収器は、電圧依存性抵抗体１の円柱形
のどの部分も径が一定である。このため、電圧依
存性抵抗体１の両端に設けられた２つの金属製キ
ヤツプ２間の最短距離は、電圧依存性抵抗体１の
側面部になる。そして、電圧依存性抵抗体にサー
ジが印加された場合、電圧依存性抵抗体の最も抵
抗の低い部分に集中して電流が流れる。第１図に
示すサージ吸収器の場合、最も抵抗の低い部分は
金属製キヤツプ２間距離の最も短かい距離の部
分、すなわち電圧依存性抵抗体１の側面部に集中
して電流が流れ、内部にはほとんど電流が流れな
い。そして、電圧依存性抵抗体のサージに対する
寿命は、サージ電流の流れる部分の大きさに比例
する。第１図のサージ吸収器の場合は、サージ電
流の流れる部分が電圧依存性抵抗体１の側面付近
だけなので、サージに対する寿命特性が非常に悪
いという欠点がある。 A conventional surge absorber having a structure in which metal caps are provided at both ends of a cylindrical voltage-dependent resistor is shown in FIG. 1. In this conventional surge absorber, every part of the cylindrical shape of the voltage dependent resistor 1 has a constant diameter. Therefore, the shortest distance between the two metal caps 2 provided at both ends of the voltage dependent resistor 1 is the side surface of the voltage dependent resistor 1. When a surge is applied to the voltage-dependent resistor, current flows concentrated in the lowest resistance portion of the voltage-dependent resistor. In the case of the surge absorber shown in Fig. 1, the current flows concentrated in the part with the lowest resistance at the shortest distance between the metal caps 2, that is, the side part of the voltage-dependent resistor 1, and the current flows inside the surge absorber. Almost no current flows through. The life of the voltage-dependent resistor against surges is proportional to the size of the portion through which the surge current flows. In the case of the surge absorber shown in FIG. 1, the portion through which the surge current flows is only near the side surface of the voltage-dependent resistor 1, so the surge absorber has a drawback that its lifespan characteristics against surges are very poor.
本考案は上記のような従来の欠点を除去すべく
創案されたものであり、円柱形の電圧依存性抵抗
体の両端に金属製キヤツプを設けた構造のサージ
吸収器のサージに対する寿命特性を改善すること
を目的としている。 This invention was devised to eliminate the above-mentioned conventional drawbacks, and improves the surge life characteristics of a surge absorber that has a structure in which metal caps are provided at both ends of a cylindrical voltage-dependent resistor. It is intended to.
本考案のサージ吸収器の構成を第２図に示す一
実施例で説明する。円柱形で両端部の径が中央部
の径より大きい形状の電圧依存性抵抗体３の両端
に、金属製キヤツプ４を圧入して設け、この金属
製キヤツプ４を電極とするサージ吸収器である。
そして、第２図中に示す電圧依存性抵抗体３の径
の小さい部分から金属製キヤツプ４の圧入口まで
の最短距離ａがその電圧依存性抵抗体３の径の小
さい部分からその金属製キヤツプ４の底面までの
最短距離ｂより長くしており、この場合は金属製
キヤツプ４間の抵抗は電圧依存性抵抗体３の内部
全体で決まるため、金属製キヤツプ４間にサージ
が印加された場合、電圧依存性抵抗体３の内部全
体に電流が流れ、第１図に示す従来例のような側
面部に集中して電流が流れるという現象は生じな
い。このため、本考案のサージ吸収器はサージに
対する寿命特性が良好である。 The configuration of the surge absorber of the present invention will be explained using an embodiment shown in FIG. This is a surge absorber in which metal caps 4 are press-fitted into both ends of a voltage dependent resistor 3 which is cylindrical in shape and has a diameter larger at both ends than the diameter at the center, and these metal caps 4 serve as electrodes. .
The shortest distance a from the small diameter part of the voltage dependent resistor 3 to the injection port of the metal cap 4 shown in FIG. In this case, the resistance between the metal caps 4 is determined by the entire inside of the voltage dependent resistor 3, so if a surge is applied between the metal caps 4, , the current flows throughout the inside of the voltage-dependent resistor 3, and the phenomenon that the current flows concentrated at the side surface as in the conventional example shown in FIG. 1 does not occur. Therefore, the surge absorber of the present invention has good life characteristics against surges.
本考案のサージ吸収器は、電極を金属製キヤツ
プの機械的圧入により作ることができるため、自
動化が容易である。また、金属製キヤツプの電極
に金属製導線をスポツト溶接することができ、半
田付けによる導線接続によつて生じる熱劣化とい
う問題がない。さらに、本考案のサージ吸収器
は、第１図に示すような円柱形のどの部分も同じ
径の電圧依存性抵抗体の両端に金属製キヤツプを
設けた従来例のサージ吸収器より、上述したよう
にサージに対する寿命特性が非常に良好である。 The surge absorber of the present invention can be easily automated because the electrodes can be made by mechanically press-fitting a metal cap. Further, the metal conducting wire can be spot welded to the electrode of the metal cap, and there is no problem of thermal deterioration caused by connecting the conducting wire by soldering. Furthermore, the surge absorber of the present invention is superior to the conventional surge absorber in which metal caps are provided at both ends of a cylindrical voltage-dependent resistor having the same diameter in all parts as shown in Figure 1. As such, it has very good life characteristics against surges.
第１図は従来のサージ吸収器の断面図、第２図
は本考案に係るサージ吸収器の一実施例を示す断
面図である。
３……電圧依存性抵抗体、４……金属製キヤツ
プ。
FIG. 1 is a sectional view of a conventional surge absorber, and FIG. 2 is a sectional view showing an embodiment of the surge absorber according to the present invention. 3... Voltage dependent resistor, 4... Metal cap.
Claims (1)
電圧依存性抵抗体の両端に金属製キヤツプを圧入
し、上記電圧依存性抵抗体の径の小さい部分から
上記金属製キヤツプの圧入口の円周までの最短距
離が、その電圧依存性抵抗体の径の小さい部分か
らその金属製キヤツプの底面までの最短距離より
長い構成としたサージ吸収器。 A metal cap is press-fitted into both ends of a voltage-dependent resistor that is cylindrical in shape and the diameter of both ends is larger than that of the center. A surge absorber configured such that the shortest distance to the circumference is longer than the shortest distance from the small diameter part of the voltage dependent resistor to the bottom of the metal cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18692981U JPS5892704U (en) | 1981-12-14 | 1981-12-14 | surge absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18692981U JPS5892704U (en) | 1981-12-14 | 1981-12-14 | surge absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5892704U JPS5892704U (en) | 1983-06-23 |
| JPS6228722Y2 true JPS6228722Y2 (en) | 1987-07-23 |
Family
ID=29989305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18692981U Granted JPS5892704U (en) | 1981-12-14 | 1981-12-14 | surge absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5892704U (en) |
-
1981
- 1981-12-14 JP JP18692981U patent/JPS5892704U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5892704U (en) | 1983-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6228722Y2 (en) | ||
| DE19928322A1 (en) | Gas-filled surge arrester with electrode connections in the form of band-like clamps | |
| JPS5895147U (en) | Surge absorber with disconnection indicator | |
| JPH0312027Y2 (en) | ||
| JPS5834751Y2 (en) | surge absorber | |
| JPH0134321Y2 (en) | ||
| JPS6342506Y2 (en) | ||
| JPS5849602Y2 (en) | Voltage dependent nonlinear resistor | |
| JPH051958Y2 (en) | ||
| JPH0138884Y2 (en) | ||
| JPH0138883Y2 (en) | ||
| JPS5832248Y2 (en) | surge absorber | |
| JPH0240532Y2 (en) | ||
| JPH06283391A (en) | Chip-type solid electrolytic capacitor | |
| JPS6326910Y2 (en) | ||
| JPH0580116B2 (en) | ||
| JPH0547478Y2 (en) | ||
| US2217482A (en) | Lightning arrester | |
| JPS6236244Y2 (en) | ||
| JPH051956Y2 (en) | ||
| JPS5819835Y2 (en) | Voltage nonlinear resistance element | |
| JPH0454716Y2 (en) | ||
| JPS587603Y2 (en) | surge absorber | |
| JPS638083Y2 (en) | ||
| US1589583A (en) | Lightning arrester |