JP2701052B2 - Surge absorbing element - Google Patents
Surge absorbing elementInfo
- Publication number
- JP2701052B2 JP2701052B2 JP63252949A JP25294988A JP2701052B2 JP 2701052 B2 JP2701052 B2 JP 2701052B2 JP 63252949 A JP63252949 A JP 63252949A JP 25294988 A JP25294988 A JP 25294988A JP 2701052 B2 JP2701052 B2 JP 2701052B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- absorbing element
- surge absorbing
- voltage
- resistor layer
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 10
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical group [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 7
- 229910052788 barium Inorganic materials 0.000 claims description 6
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 4
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical group [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、放電間隙と電圧非直線抵抗体とを並列接続
して気密容器に封入した構造を有するサージ吸収素子に
係り、特に構造を簡単にすることにより、小型化及び生
産性の向上を図ったサージ吸収素子に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surge absorbing element having a structure in which a discharge gap and a voltage non-linear resistor are connected in parallel and sealed in an airtight container. Accordingly, the present invention relates to a surge absorbing element which is reduced in size and improved in productivity.
［従来の技術］ 従来、電子機器に侵入する過渡的な異常電圧や誘電雷
等のサージから電子回路部品を保護するため、第２図に
示す如く、気密容器６に封入した放電電極2,2間の放電
間隙４に於ける放電現象を利用したガスアレスタや、第
３図に示す如く、電圧非直線抵抗体５′より成るバリス
タ等、種々のサージ吸収素子１が用いられている。[Prior Art] Conventionally, as shown in FIG. 2, discharge electrodes 2 and 2 sealed in an airtight container 6 are used to protect electronic circuit components from transient abnormal voltages and surges such as dielectric lightning that enter an electronic device. Various surge absorbing elements 1 are used, such as a gas arrester utilizing a discharge phenomenon in a discharge gap 4 therebetween, and a varistor including a voltage non-linear resistor 5 'as shown in FIG.
本出願人は、先に、放電間隙と電圧非直線抵抗体とを
並列接続して気密容器に封入したサージ吸収素子を提案
（特開昭59−157981,実開昭60−32783等）しており、こ
のサージ吸収素子は第４図に示す如き構成を有してい
る。即ち、上記サージ吸収素子１は、電圧非直線抵抗体
５′の両端に一対の放電電極2,2を接続し、両電極2,2間
に放電間隙４を形成することによって、上記電圧非直線
抵抗体５′と放電間隙４とを並列接続し、これを放電ガ
スで満たされた気密容器６に封入してリード線3,3を導
出した構造となっている。The present applicant has previously proposed a surge absorbing element in which a discharge gap and a voltage non-linear resistor are connected in parallel and sealed in an airtight container (Japanese Patent Laid-Open No. 59-15781, Japanese Utility Model Laid-Open No. 60-32783, etc.). The surge absorbing element has a configuration as shown in FIG. That is, the surge absorbing element 1 is configured such that a pair of discharge electrodes 2, 2 are connected to both ends of a voltage non-linear resistor 5 ', and a discharge gap 4 is formed between the two electrodes 2, 2 so that the voltage non-linear resistance is formed. The resistor 5 'and the discharge gap 4 are connected in parallel, and this is sealed in an airtight container 6 filled with a discharge gas, and the lead wires 3, 3 are led out.
上記サージ吸収素子１に、該素子１のクリップ電圧以
上の電圧値を有するサージが印加されると、直ちに、電
圧非直線抵抗体５′を通して電流が流れてサージ吸収が
開始される。この電流は、サージ吸収動作の進展に伴っ
て増加し、電流による電圧非直線抵抗体５′の電圧降下
が放電間隙４の放電開始電圧以上になると、上記放電間
隙４に気中放電、即ちグロー放電を経てアーク放電が生
成し、アーク放電の大電流を通じてサージが吸収され
る。When a surge having a voltage value equal to or greater than the clip voltage of the surge absorbing element 1 is applied to the surge absorbing element 1, a current flows immediately through the voltage non-linear resistor 5 'to start absorbing the surge. This current increases with the progress of the surge absorbing operation, and when the voltage drop of the voltage non-linear resistor 5 ′ due to the current becomes equal to or higher than the discharge starting voltage of the discharge gap 4, aerial discharge, that is, glow An arc discharge is generated through the discharge, and the surge is absorbed through a large current of the arc discharge.
上述の如く、上記サージ吸収素子は、ガスアレスタと
バリスタとを並列接続して一体化した構成により、放電
遅れ時間が大きいというガスアレスタの欠点と電流耐量
が小さいというバリスタの欠点とを相補い、速応性と大
電流耐量性とを併せ持つ優れたサージ吸収特性を有する
ものである。As described above, the surge absorbing element complements the disadvantage of the gas arrester, which has a large discharge delay time, and the disadvantage of the varistor, which has a low current withstand voltage, by a configuration in which a gas arrester and a varistor are connected in parallel and integrated. It has excellent surge absorption characteristics having both quick response and large current capacity.
［発明が解決しようとする課題］ ところが、上記サージ吸収素子にあっては、第２図に
示したガスアレスタに比べ、構成部品点数が多くなるこ
とから形状が大型化し、その組立作業も煩雑になるとい
う問題がある。[Problems to be Solved by the Invention] However, in the above-mentioned surge absorbing element, the number of components is larger than that of the gas arrester shown in FIG. Problem.
本発明は、上述の点に鑑み案出されたもので、放電間
隙と電圧非直線抵抗体との並列接続構造サージ吸収素子
の有する優れた特性を損なうことなく、小型で、且つ製
造容易なサージ吸収素子を実現することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has been made in view of a compact and easy-to-manufacture surge absorber without impairing the excellent characteristics of a surge absorbing element having a parallel connection structure of a discharge gap and a voltage nonlinear resistor. It is intended to realize an absorbing element.
［課題を解決するための手段］ 上述の目的を達成するため、本発明のサージ吸収素子
は、放電ガスで満たされた気密容器内に放電電極を対向
配置して、上記放電電極間に放電間隙を形成し、上記放
電電極にリード線を接続して、該リード線を上記気密容
器に固定すると共に該気密容器を貫通させて外部へ導出
して形成するサージ吸収素子において、上記気密容器内
面の少なくとも上記リード線間に、電圧非直線抵抗体層
を被着形成し、上記リード線を介して上記放電間隙と電
圧非直線抵抗体層とを並列接続したことを特徴とするも
のである。Means for Solving the Problems In order to achieve the above object, a surge absorbing element according to the present invention comprises a discharge electrode opposed to an airtight container filled with a discharge gas, and a discharge gap between the discharge electrodes. A surge absorbing element formed by connecting a lead wire to the discharge electrode, fixing the lead wire to the airtight container, and penetrating the airtight container and leading it out to the outside. A voltage non-linear resistor layer is formed at least between the lead wires, and the discharge gap and the voltage non-linear resistor layer are connected in parallel via the lead wire.
上記電圧非直線抵抗体層の主成分としては、酸化ニッ
ケルを選定するのが好適であり、また添加成分として
銅、ニッケル又はバリウムもしくはこれらの中の二種以
上の金属を選定するのが好適である。As the main component of the voltage nonlinear resistor layer, it is preferable to select nickel oxide, and it is preferable to select copper, nickel, barium or two or more metals among these as an additive component. is there.
［作用］ 上記の如く構成されたサージ吸収素子に上記素子のク
リップ電圧以上の電圧値を有するサージが印加される
と、直ちに、リード線間の電圧非直線抵抗体層を通して
サージ電流が流れてサージ吸収が開始され、放電電極間
に、上記リード線間の電圧非直線抵抗体層の抵抗値とサ
ージ電流値との積に相当する電圧降下が生じる。この電
圧降下は、サージ吸収動作の進行に伴って増大し、この
値が放電間隙の放電開始電圧を越えると、サージ吸収動
作が放電現象へ移行し、上記放電間隙にグロー放電が生
成し、これが更にアーク放電へ移行して大電流のサージ
が吸収される。[Operation] When a surge having a voltage value equal to or higher than the clip voltage of the element is applied to the surge absorbing element configured as described above, a surge current immediately flows through the voltage non-linear resistor layer between the lead wires, and the surge Absorption starts, and a voltage drop corresponding to the product of the resistance value of the voltage nonlinear resistor layer between the lead wires and the surge current value is generated between the discharge electrodes. This voltage drop increases with the progress of the surge absorbing operation. When this value exceeds the discharge starting voltage of the discharge gap, the surge absorbing operation shifts to a discharge phenomenon, and a glow discharge is generated in the discharge gap. Further, the operation shifts to arc discharge, and a surge of a large current is absorbed.
本発明のサージ吸収素子は、その製造に際し、従来の
ガスアレスタの気密容器内面に電圧非直線抵抗体層を被
着形成するだけであるので、ガスアレスタに比べ外形が
大型化することがなく、また製造工数が然程増えること
がない。The surge absorbing element of the present invention, when manufacturing the same, simply forms the voltage non-linear resistor layer on the inner surface of the hermetic container of the conventional gas arrester, so that the outer shape does not become larger than the gas arrester, Also, the number of manufacturing steps does not increase so much.
上記電圧非直線抵抗体層の主成分として酸化ニッケル
を選定すれば、優れた電圧非直線特性が得られる。If nickel oxide is selected as the main component of the voltage nonlinear resistor layer, excellent voltage nonlinear characteristics can be obtained.
更に、電圧非直線抵抗体層の添加成分として、銅やニ
ッケルあるいはバリウムを選定すれば、酸化ニッケルと
混合して特に優れた電圧非直線特性が得ることができ
る。Further, when copper, nickel or barium is selected as an additive component of the voltage non-linear resistor layer, particularly excellent voltage non-linear characteristics can be obtained by mixing with nickel oxide.
［実施例］ 以下、図面に基づき本発明の実施例を説明する。第１
図は、本発明の一実施例に係るサージ吸収素子を示す断
面図である。Embodiment An embodiment of the present invention will be described below with reference to the drawings. First
FIG. 1 is a sectional view showing a surge absorbing element according to one embodiment of the present invention.
サージ吸収素子１は、ニッケルや銅あるいはアルミニ
ウム等、放電特性の良好な金属材料を棒状や板状の電極
基体2b,2bに加工し、その表面に酸化バリウムや六硼化
ランタン等のエミッタ物質より成るエミッタ層2a,2aを
被着して一対の放電電極2,2を形成し、その一端にデュ
メット線（銅被覆鉄ニッケル合金線）や42−６合金線等
より成るリード線3,3の一端を接続している。更に、上
記リード線3,3を同一方向に揃え、上記放電電極2,2を略
平行に対向配置して上記放電電極2,2間に放電間隙４を
形成し、該放電間隙４に電圧非直線抵抗体層５を並列接
続して、これを気密容器６に封入し、上記リード線3,3
の中途部を気密容器６の一端に固定すると共に該気密容
器６の一端を貫通させて上記リード線3,3の他端を外部
へ導出している。上記気密容器６は、ガラス管より成る
外囲体を封止して形成したものであり、その中には、希
ガスや窒素ガスあるいは六硼化硫黄ガス等より成る放電
ガスが封入される。The surge absorbing element 1 is obtained by processing a metal material having good discharge characteristics, such as nickel, copper or aluminum, into a rod-shaped or plate-shaped electrode substrate 2b, 2b, and forming a surface thereof from an emitter material such as barium oxide or lanthanum hexaboride. A pair of discharge electrodes 2, 2 are formed by depositing the emitter layers 2a, 2a, and one end of each of the lead wires 3, 3 composed of a dumet wire (copper-coated iron-nickel alloy wire) or a 42-6 alloy wire. One end is connected. Further, the lead wires 3, 3 are aligned in the same direction, the discharge electrodes 2, 2 are arranged substantially in parallel to face each other, and a discharge gap 4 is formed between the discharge electrodes 2, 2; The linear resistor layers 5 are connected in parallel, and sealed in an airtight container 6.
Is fixed to one end of the hermetic container 6, and the other end of the lead wires 3, 3 is led out through one end of the hermetic container 6. The hermetic container 6 is formed by sealing an envelope made of a glass tube, in which a discharge gas such as a rare gas, a nitrogen gas or a sulfur hexaboride gas is sealed.
上記電圧非直線抵抗体層５は、酸化ニッケルや酸化亜
鉛あるいは炭化珪素等を主成分とし、これに銅、ニッケ
ル、バリウム、ビスマスあるいは鉄等、上記主成分と適
合する添加成分を加えて電圧非直線特性を付与し、蒸
着、溶射、塗布等によって気密容器６の内面に被着形成
したものであり、リード線3,3を介して放電電極2,2と接
続して放電間隙４と並列接続している。The voltage non-linear resistor layer 5 is mainly composed of nickel oxide, zinc oxide, silicon carbide, or the like, and is added with an additive component such as copper, nickel, barium, bismuth, or iron, which is compatible with the main component, to form a voltage non-linear resistor layer. It has linear characteristics and is formed on the inner surface of the hermetic container 6 by vapor deposition, thermal spraying, coating, or the like, and is connected to the discharge electrodes 2, 2 via the lead wires 3, 3 and connected in parallel to the discharge gap 4. doing.
上述したサージ吸収素子の製造方法について説明す
る。A method for manufacturing the above-described surge absorbing element will be described.
この製造方法にあっては、まず、デュメット線より成
るリード線3,3を接続したニッケルより成る棒状の電極
基体2b,2bの表面に、該電極基体2b,2b表面の一部が露出
するように炭酸バリウムより成るエミッタ材料を付着さ
せる。そして、上記リード線3,3を同一方向に揃えて整
列治具によって保持して、電極基体2b,2bを所定間隔で
対向させ、これを両端が開口されたガラス管より成る外
囲体内に挿入して、上記リード線3,3の端部が外囲体の
一端から外部へ突出するように収容する。更に、外囲体
の一端をガス炎によって加熱して溶融させ、溶融部分を
ピンチャーによって内方向へ圧潰して封着し、リード線
3,3の中途部を外囲体の一端に固定すると共に、上記リ
ード線3,3を外囲体外へ導出する。この場合、上記外囲
体の加熱を空気中で行うことにより、外囲体内に収容さ
れている電極基体2b,2b表面の露出部分が酸化されて酸
化ニッケルが形成される。In this manufacturing method, first, a part of the surface of the electrode bases 2b, 2b is exposed on the surfaces of the rod-shaped electrode bases 2b, 2b made of nickel to which the lead wires 3, 3 made of a dumet wire are connected. Is deposited with an emitter material comprising barium carbonate. Then, the lead wires 3, 3 are aligned in the same direction and held by an alignment jig, the electrode bases 2b, 2b are opposed at a predetermined interval, and this is inserted into an envelope made of a glass tube having both ends opened. Then, the lead wires 3, 3 are housed so that the ends thereof protrude from one end of the outer enclosure to the outside. Further, one end of the envelope is heated and melted by a gas flame, and the melted portion is crushed inward by a pincher and sealed, and a lead wire is sealed.
The middle part of 3, 3 is fixed to one end of the envelope, and the lead wires 3, 3 are led out of the envelope. In this case, by heating the envelope in air, the exposed portions of the surfaces of the electrode bases 2b, 2b housed in the envelope are oxidized to form nickel oxide.
次いで、外囲体の他端に排気装置を接続し、外囲体を
高周波コイル内に配置して、高周波加熱すると共に外囲
体内を排気すれば、エミッタ材料の炭酸バリウムが熱分
解して酸化バリウムとなり、電極基体2b,2bの表面に酸
化バリウムより成るエミッタ層2a,2aが生成して放電電
極2,2が形成される。更に加熱温度を上げることにより
電極基体2b,2b表面の露出部分が溶融して、排気に伴う
外囲体内の減圧によって飛散を開始する。排気工程当初
に於いては、外囲体内の残留空気濃度が高いため、放電
電極2,2の電極基体2b,2bを構成するニッケルが飛散中に
酸化されて酸化ニッケルとなり、前工程で電極基体2b,2
bの表面に形成されていた酸化ニッケルと共に外囲体の
内面に被着する。同時にリード線3,3表面の銅も溶融し
て飛散する。Next, an exhaust device is connected to the other end of the envelope, the envelope is arranged in a high-frequency coil, and high-frequency heating and exhaust of the envelope are performed, whereby barium carbonate as an emitter material is thermally decomposed and oxidized. Barium is formed, and emitter layers 2a, 2a made of barium oxide are formed on the surfaces of the electrode bases 2b, 2b, so that the discharge electrodes 2, 2 are formed. By further increasing the heating temperature, the exposed portions of the surfaces of the electrode bases 2b, 2b are melted, and scattering starts due to the reduced pressure in the envelope due to the exhaust. At the beginning of the evacuation process, since the residual air concentration in the envelope is high, nickel constituting the electrode bases 2b, 2b of the discharge electrodes 2, 2 is oxidized during the scattering to form nickel oxide. 2b, 2
Along with the nickel oxide formed on the surface of b, it adheres to the inner surface of the envelope. At the same time, the copper on the surfaces of the lead wires 3 and 3 also melts and scatters.
飛散当初は銅も酸化されるが、排気作業の進行に伴っ
て外囲体内の残留空気濃度が低下し、遂には飛散した銅
が酸化されない状態で酸化ニッケルに混入する。その
後、設定した電圧非直線特性が得られた時点でこの操作
を終了すれば、酸化ニッケルを主成分とし、銅を添加成
分とした電圧非直線抵抗体層５が形成される。この場
合、加熱温度や加熱時間あるいは排気速度等の製造条件
を調節して、放電電極2,2の電極基体2b,2bやエミッタ層
2a,2aの表面が飛散するように条件設定すれば、これら
を構成する金属であるニッケルやバリウムによって電圧
非直線抵抗体層５の添加成分が形成される。At the beginning of the scattering, copper is also oxidized, but the residual air concentration in the envelope decreases as the evacuation work progresses, and finally the scattered copper is mixed with the nickel oxide in an unoxidized state. Thereafter, when this operation is completed when the set voltage non-linear characteristic is obtained, the voltage non-linear resistance layer 5 containing nickel oxide as a main component and copper as an additional component is formed. In this case, the production conditions such as the heating temperature, the heating time, or the pumping speed are adjusted to adjust the electrode bases 2b, 2b of the discharge electrodes 2, 2 and the emitter layer.
If the conditions are set so that the surfaces of 2a and 2a are scattered, the additive components of the voltage non-linear resistor layer 5 are formed by nickel and barium which are the constituent metals.
最後に、上記排気作業によって、残留空気、炭酸バリ
ウム分解による二酸化炭素並びに外囲体及び外囲体内に
収容された部材から放出される不純ガスを除去して外囲
体内を高真空状態とした後、放電ガスを充填し、更に上
記外囲体の他端を加熱、溶融させて封じ切って気密容器
６を形成すれば、サージ吸収素子１が完成する。Finally, after removing the residual air, carbon dioxide from the decomposition of barium carbonate, and the impurity gas released from the envelope and the members contained in the envelope, the envelope is brought into a high vacuum state. If the airtight container 6 is formed by filling a discharge gas and further heating and melting the other end of the outer enclosure to seal it, the surge absorbing element 1 is completed.
尚、本実施例のサージ吸収素子を製造するに際して
は、加熱温度や加熱時間あるいは排気速度等の製造条件
及び各部材を構成する材料の溶融温度や分解温度あるい
は酸化速度等を適宜選定し、最適条件を設定する必要が
ある。In manufacturing the surge absorbing element of the present embodiment, manufacturing conditions such as heating temperature, heating time, or pumping speed, and melting temperature, decomposition temperature, oxidation rate, and the like of materials constituting each member are appropriately selected and optimized. Conditions need to be set.
上記した製造方法の場合、電圧非直線抵抗体層５を形
成するための材料や工程を別途用意する必要がなく、製
造の簡易化が図れるものである。In the case of the above-described manufacturing method, there is no need to separately prepare a material and a process for forming the voltage non-linear resistor layer 5, and the manufacturing can be simplified.
［発明の効果］ 以上詳述の如く、本発明のサージ吸収素子は、放電間
隙と電圧非直線抵抗体層とを並列接続しているので、サ
ージ吸収特性は、ガスアレスタの大電流耐量性とバリス
タの速応性とを併せ持つ優れたものとなる。しかも、従
来のガスアレスタの気密容器内面に電圧非直線抵抗体層
を被着形成するだけの簡単な構造であるため、小型にな
ると共にその製造が容易なものとなる。[Effects of the Invention] As described above in detail, the surge absorbing element of the present invention has the discharge gap and the voltage non-linear resistor layer connected in parallel. It becomes an excellent thing which has the quick response of the varistor. In addition, the structure is simple, in which the voltage non-linear resistor layer is simply formed on the inner surface of the airtight container of the conventional gas arrester, so that the size is reduced and the manufacture thereof is easy.
第１図は、本発明の一実施例を示す断面図、第２図乃至
第４図は、従来例の断面図である。 １……サージ吸収素子、２……放電電極、2a……エミッ
タ層、2b……電極基体、３……リード線、４……放電間
隙、５……電圧非直線抵抗体層、６……気密容器。FIG. 1 is a sectional view showing an embodiment of the present invention, and FIGS. 2 to 4 are sectional views of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Surge absorbing element, 2 ... Discharge electrode, 2a ... Emitter layer, 2b ... Electrode base, 3 ... Lead wire, 4 ... Discharge gap, 5 ... Voltage non-linear resistor layer, 6 ... Airtight container.
フロントページの続き (56)参考文献 特開 昭62−287584（ＪＰ，Ａ) 実開 昭49−87029（ＪＰ，Ｕ) 実開 昭62−34790（ＪＰ，Ｕ) 実開 昭62−70388（ＪＰ，Ｕ) 特公 平５−7836（ＪＰ，Ｂ２)Continuation of front page (56) References JP-A-62-287584 (JP, A) JP-A-49-87029 (JP, U) JP-A-62-34790 (JP, U) JP-A-62-70388 (JP, U) , U) Tokiko Hei 5-7736 (JP, B2)
Claims (3)
極を対向配置して、上記放電電極間に放電間隙を形成
し、上記放電電極にリード線を接続して、該リード線を
上記気密容器に固定すると共に該気密容器を貫通させて
外部へ導出したサージ吸収素子において、上記気密容器
内面の少なくとも上記リード線間に、電圧非直線抵抗体
層を被着形成し、上記リード線を介して上記放電間隙と
電圧非直線抵抗体層とを並列接続したことを特徴とする
サージ吸収素子。1. A discharge electrode is disposed in an airtight container filled with a discharge gas to face a discharge gap, a discharge gap is formed between the discharge electrodes, and a lead wire is connected to the discharge electrode. In the surge absorbing element fixed to the hermetic container and led to the outside through the hermetic container, a voltage non-linear resistor layer is formed on at least the lead wires on the inner surface of the hermetic container, and the lead wire is formed. A surge absorbing element characterized in that the discharge gap and the voltage non-linear resistor layer are connected in parallel through a gap.
ルであることを特徴とする請求項１に記載のサージ吸収
素子。2. The surge absorbing element according to claim 1, wherein a main component of the voltage nonlinear resistor layer is nickel oxide.
ッケル又はバリウムもしくはこれらの中の二種以上の金
属であることを特徴とする請求項１又は２に記載のサー
ジ吸収素子。3. The surge absorbing element according to claim 1, wherein the additive component of the voltage non-linear resistor layer is copper, nickel, barium, or two or more of these metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63252949A JP2701052B2 (en) | 1988-10-07 | 1988-10-07 | Surge absorbing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63252949A JP2701052B2 (en) | 1988-10-07 | 1988-10-07 | Surge absorbing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02100280A JPH02100280A (en) | 1990-04-12 |
| JP2701052B2 true JP2701052B2 (en) | 1998-01-21 |
Family
ID=17244403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63252949A Expired - Lifetime JP2701052B2 (en) | 1988-10-07 | 1988-10-07 | Surge absorbing element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2701052B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016189265A (en) * | 2015-03-30 | 2016-11-04 | 三菱マテリアル株式会社 | Discharge tube and manufacturing method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4987029U (en) * | 1972-11-17 | 1974-07-27 | ||
| JPS59157981A (en) * | 1983-02-25 | 1984-09-07 | 岡谷電機産業株式会社 | Electronic circuit protective element |
| JPS62243273A (en) * | 1986-04-14 | 1987-10-23 | 株式会社村田製作所 | Surge protecting device |
| JPH0722033B2 (en) * | 1986-06-13 | 1995-03-08 | 岡谷電機産業株式会社 | Arrester |
| JPH057836A (en) * | 1991-07-03 | 1993-01-19 | Material Sci Kk | Metal product provided with protective coating |
-
1988
- 1988-10-07 JP JP63252949A patent/JP2701052B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02100280A (en) | 1990-04-12 |
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