JPH0316244Y2 - - Google Patents
Info
- Publication number
- JPH0316244Y2 JPH0316244Y2 JP17790184U JP17790184U JPH0316244Y2 JP H0316244 Y2 JPH0316244 Y2 JP H0316244Y2 JP 17790184 U JP17790184 U JP 17790184U JP 17790184 U JP17790184 U JP 17790184U JP H0316244 Y2 JPH0316244 Y2 JP H0316244Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- varistor
- mounting part
- protrusion
- electrodes
- 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
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 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
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
Landscapes
- Details Of Resistors (AREA)
- Thermistors And Varistors (AREA)
Description
【考案の詳細な説明】
［考案の技術分野］
本考案は熱放散を大幅に向上させた高エネルギ
ー吸収用のバリスタに関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a varistor for high energy absorption with significantly improved heat dissipation.
［考案の技術的背景とその問題点］
一般に高エネルギー吸収用のバリスタは、熱放
散を良好にする必要があり、そのため従来はセラ
ミツク粉末を成形焼結してなる板状バリスタ素体
に外周縁を残して形成した銀電極に電極板をハン
ダ付けし、該電極板によつて熱放散機能を発揮さ
せるようにしていた。しかして、従来このような
目的で提案されたものとしては、第６図および第
７図に示すように例えば円板状に成形焼結したバ
リスタ素体１１の表裏両面に形成した電極１２，
１３に第８図に示すように電極取付部１４周囲の
任意の箇所から突出した外部接続部１５を一体成
形した電極板端子１６の前記電極取付部１４面を
ハンダ１７付けにて接続したものから構成してい
る。しかしながら、上記構成からなるものには、
つぎのような欠点がある。すなわち、電極１２，
１３と電極板端子１６を接続するためのハンダ１
７付けは特別な手段を構成する以外は一般に前記
電極板端子１６の周辺部であるためバリスタ素体
１１からの電極板端子１６への熱伝導効果は不十
分で放熱効果が十分に得られない問題をかかえて
いた。そのため電極板端子１６の電極取付部１４
全面と電極１２，１３当接面の全面をハンダ付け
することも考えられるが、電極１２，１３面と電
極取付部１４面両方とも平面的であるためハンダ
付け時フラツクスの蒸発によるガスが抜けにく
く、その部分が空洞部となるため該空洞部によつ
てバリスタ素体１１から電極板端子１６への熱伝
導が阻害され結局熱放散効果をいかんなく発揮す
るものとは言えなかつた。[Technical background of the invention and its problems] In general, varistors for high energy absorption need to have good heat dissipation, and for this reason conventionally, a plate-shaped varistor body made of ceramic powder is molded and sintered with an outer periphery. An electrode plate was soldered to the silver electrode formed by leaving the . However, as shown in FIGS. 6 and 7, electrodes 12 formed on both the front and back surfaces of a varistor body 11 formed and sintered into a disk shape have been conventionally proposed for this purpose.
13, as shown in FIG. 8, an electrode plate terminal 16 having an integrally molded external connection part 15 protruding from an arbitrary location around the electrode mounting part 14 is connected to the surface of the electrode mounting part 14 by soldering 17. It consists of However, with the above configuration,
It has the following drawbacks. That is, the electrode 12,
Solder 1 for connecting 13 and electrode plate terminal 16
7 is generally located around the electrode plate terminal 16 unless it constitutes a special means, so the heat conduction effect from the varistor body 11 to the electrode plate terminal 16 is insufficient, and a sufficient heat dissipation effect cannot be obtained. I had a problem. Therefore, the electrode mounting portion 14 of the electrode plate terminal 16
It is also possible to solder the entire surface and the entire surface of the contact surface of the electrodes 12 and 13, but since both the electrodes 12 and 13 and the surface of the electrode attachment part 14 are flat, it is difficult for gas to escape due to flux evaporation during soldering. Since that portion becomes a hollow portion, heat conduction from the varistor element body 11 to the electrode plate terminals 16 is inhibited by the hollow portion, and in the end, it cannot be said that the heat dissipation effect is fully exerted.
［考案の目的］
本考案は上記の点に鑑みてなされたもので、上
記問題を解消し、熱放散効果を大幅に向上し長時
間安定した特性を発揮できる高エネルギー吸収用
のバリスタを提供することを目的とするものであ
る。[Purpose of the invention] The present invention was made in view of the above points, and provides a varistor for high energy absorption that solves the above problems, greatly improves the heat dissipation effect, and can exhibit stable characteristics for a long time. The purpose is to
［考案の概要］
本考案の高エネルギー吸収用のバリスタは、板
状のバリスタ素体の両面に外周縁を残して電極を
形成し、該電極に該電極面積より小径で突起の先
端周辺を鋸刃状とした複数の突起孔を設けた電極
取付部と、該取付部の任意の箇所から突出した外
部接続部とを一体成形した電極板端子の前記電極
取付部の突起面をハンダを介して接続し、前記外
部接続部を外部へ導出したことを特徴とするもの
である。[Summary of the invention] The varistor for high energy absorption of the present invention has an electrode formed on both sides of a plate-shaped varistor body leaving an outer periphery, and a saw around the tip of the protrusion on the electrode with a diameter smaller than the area of the electrode. The protruding surface of the electrode mounting part of an electrode plate terminal is integrally formed with an electrode mounting part provided with a plurality of blade-shaped protruding holes and an external connection part protruding from any part of the mounting part. The device is characterized in that the external connection portion is connected to the outside.
［考案の実施例］
以下、本考案の一実施例につき図面を参照して
説明する。すなわち第１図および第２図に示すよ
うに、例えば酸化亜鉛、酸化錫、チタン酸バリウ
ム、チタン酸ストロンチウムなどを主成分とし、
他に数種類の金属酸化物を混合したセラミツク粉
末を円板状に成形焼結してなる板状のバリスタ素
体１の両面に外周縁を残して、例えば銀ペースト
を塗布焼付けして電極２，３を形成し、該電極
２，３に第３図および第４図に示すように前記電
極２，３より小径で突起４の先端周辺を鋸刃状５
とした複数の突起孔６を設けた電極取付部７と、
該電極取付部７周囲の任意の箇所から突出して設
けた外部接続部８とを一体成形した例えばハンダ
メツキ、錫メツキまたはニツケルメツキなどを施
した銅、アルミ、鉄、またはその合金などからな
る電極板端子９の電極取付部７の突起４面ををハ
ンダ１０を介して接続し、しかるのち、樹脂被覆
またはケースへ収納するなどの外装（図示せず）
を施してなるものである。なお、この場合前記電
極取付部７の大きさは前述のように接続するバリ
スタ素体１に形成した電極２，３面積より小径で
あることを条件に熱放散性を考慮し少なくとも電
極２，３面積の半分を確保したものであることが
肝要である。[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings. That is, as shown in FIGS. 1 and 2, the main ingredients are zinc oxide, tin oxide, barium titanate, strontium titanate, etc.
In addition, a plate-shaped varistor element body 1 is formed by molding and sintering ceramic powder mixed with several kinds of metal oxides into a disk shape, leaving an outer periphery on both sides, and applying and baking, for example, silver paste, to form electrodes 2, 3, and as shown in FIGS. 3 and 4, the electrodes 2 and 3 are provided with a saw blade shape 5 around the tip of the protrusion 4 with a diameter smaller than that of the electrodes 2 and 3.
an electrode mounting part 7 provided with a plurality of protruding holes 6;
An electrode plate terminal made of copper, aluminum, iron, or an alloy thereof, which is integrally molded with an external connection part 8 that protrudes from any location around the electrode attachment part 7 and is plated with solder, tin, or nickel. The four protrusions of the electrode attachment part 7 of 9 are connected via the solder 10, and then the exterior is coated with resin or housed in a case (not shown).
It is made by applying. In this case, the size of the electrode mounting portion 7 is set to be smaller than the area of the electrodes 2 and 3 formed on the varistor body 1 to be connected as described above, taking heat dissipation into consideration. It is important that half of the area is secured.
以上のように構成してなる高エネルギー吸収用
のバリスタによれば、電極板端子９の電極２，３
への接続面となる電極取付部８に複数の突起孔６
が設けられており、該突起孔６を構成する突起４
の先端周辺を鋸刃状５とした形状からなつている
ため電極２，３と電極取付部７間に空気が流通す
る状態でハンダ１０付けが行われる結果、ハンダ
１０付け時のフラツクスの蒸発によるガスは容易
に外部ににげやすく電極２，３と電極取付部７間
での空洞部の発生は皆無となり電極２，３と電極
取付部７にまんべんなくハンダが入り込み接続さ
れ熱伝導を阻害する要因は解消され、すぐれた熱
放散効果をいかんなく発揮できる。 According to the high energy absorption varistor configured as described above, the electrodes 2 and 3 of the electrode plate terminal 9
A plurality of protruding holes 6 are provided in the electrode mounting portion 8 which becomes the connection surface to the
is provided, and the protrusion 4 constituting the protrusion hole 6
Since the periphery of the tip is shaped like a saw blade 5, the solder 10 is attached with air flowing between the electrodes 2, 3 and the electrode attachment part 7, resulting in evaporation of flux during the solder 10 attachment. Gas easily escapes to the outside, and there is no cavity between the electrodes 2, 3 and the electrode mounting part 7, and the solder evenly enters and connects the electrodes 2, 3 and the electrode mounting part 7, which is a factor that inhibits heat conduction. is eliminated, and excellent heat dissipation effects can be fully demonstrated.
つぎに実験結果をもとに本考案(A)と従来の参考
例(B)との特性比較を述べる。すなわち直径13.5
mm、厚さ2.5mmに成形焼結した立上り電圧（V1ｍ
Ａ）470Vに設定した酸化亜鉛系バリスタ素体の
両面に直径11.4mmの銀電極を形成し、該電極に電
極取付部の径を10.5mmとし、しかも該電極取付部
に第３図に示すように複数の突起孔を設けた鉄−
ニツケル合金でハンダメツキ処理を施した電極板
端子をハンダ付けした本考案(A)と該本考案(A)と同
一バリスタ素体の両面に同一の電極を形成し、該
電極に電極取付部の径を10.5mmとした第１図に示
す構造からなる鉄−ニツケル合金でハンダメツキ
処理を施した電極板端子をハンダ付けした従来の
参考例(B)との20ｍsec矩形波エネルギー 200ジユ
ール ５分間を１回とした矩形波エネルギー印加
回数−V1ｍＡの変化率を調べた結果、第５図に
示すように参考例(B)はV1ｍＡの変化率が大きく
熱放散性が悪いのに対し、本考案(A)のものは印加
回数30回時点でもV1ｍＡの変化率も−７％程度
で熱放散性がすぐれた効果を実証した。 Next, we will compare the characteristics of the present invention (A) and the conventional reference example (B) based on experimental results. i.e. diameter 13.5
mm, thickness 2.5mm molded and sintered rise voltage (V1m
A) Silver electrodes with a diameter of 11.4 mm are formed on both sides of the zinc oxide varistor body set at 470V, and the diameter of the electrode attachment part is 10.5 mm, and the diameter of the electrode attachment part is 10.5 mm. Iron with multiple protruding holes
The present invention (A) has soldered electrode plate terminals that have been soldered with nickel alloy, and the same electrodes are formed on both sides of the same varistor body as the present invention (A), and the diameter of the electrode mounting portion is 20 msec square wave energy 200 joules once for 5 minutes with the conventional reference example (B) in which the electrode plate terminals are soldered and soldered with an iron-nickel alloy having the structure shown in Figure 1, where the diameter is 10.5 mm. As a result of examining the rate of change in the number of square wave energy applications - V1mA, as shown in Figure 5, the reference example (B) had a large rate of change in V1mA and poor heat dissipation, while the present invention (A) Even after 30 applications, the rate of change in V1mA was approximately -7%, demonstrating excellent heat dissipation.
数値は試料それぞれ20個の平均値である。 The values are the average values of 20 samples each.
［考案の効果］
本考案によれば熱放散効果が高く、長時間安定
した特性を維持できる実用的価値の高い高エネル
ギー吸収用のバリスタを得ることができる。[Effects of the invention] According to the invention, it is possible to obtain a varistor for high energy absorption, which has a high heat dissipation effect, maintains stable characteristics for a long time, and has high practical value.
第１図および第２図は本考案の一実施例に係る
バリスタを示すもので第１図は平面図、第２図は
側面図、第３図および第４図は第１図および第２
図を構成する電極板端子を示すもので第３図は平
面図、第４図は第３図イ−イ拡大断面図、第５図
は矩形波エネルギー印加回数−V1ｍＡの変化率
特性曲線図、第６図および第７図は従来の参考例
に係るバリスタを示すもので第６図は平面図、第
７図は第６図ロ−ロ断面図、第８図は第６図およ
び第７図を構成する電極板端子を示す斜視図であ
る。
１……バリスタ素体、２，３……電極、４……
突起、５……鋸刃状、６……突起孔、７……電極
取付部、８……外部接続部、９……電極板端子、
１０……ハンダ。
1 and 2 show a varistor according to an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view, and FIGS.
3 is a plan view, FIG. 4 is an enlarged cross-sectional view of FIG. 6 and 7 show a varistor according to a conventional reference example, in which FIG. 6 is a plan view, FIG. 7 is a cross-sectional view of the roller shown in FIG. FIG. 1... Varistor element body, 2, 3... Electrode, 4...
Protrusion, 5...Saw blade shape, 6...Protrusion hole, 7...Electrode mounting part, 8...External connection part, 9...Electrode plate terminal,
10...Solder.
Claims (1)
と、該素体の両面に外周縁を残して形成した電極
と、該電極面積より小径で突起の先端周辺を鋸刃
状とした複数の突起孔を設けた電極取付部と該取
付部の任意の箇所から突出した外部接続部とから
なる電極板端子と、前記電極面と前記電極取付部
の突起面とを接続したハンダとを具備したことを
特徴とするバリスタ。 A plate-shaped varistor element formed by molding and sintering a metal oxide, an electrode formed with outer peripheral edges left on both sides of the element, and a plurality of varistor elements having a diameter smaller than the electrode area and having a saw blade shape around the tip of the protrusion. An electrode plate terminal comprising an electrode mounting part provided with a protrusion hole and an external connection part protruding from an arbitrary part of the mounting part, and a solder connecting the electrode surface and the protrusion surface of the electrode mounting part. A barista characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17790184U JPH0316244Y2 (en) | 1984-11-21 | 1984-11-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17790184U JPH0316244Y2 (en) | 1984-11-21 | 1984-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6192005U JPS6192005U (en) | 1986-06-14 |
| JPH0316244Y2 true JPH0316244Y2 (en) | 1991-04-08 |
Family
ID=30735471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17790184U Expired JPH0316244Y2 (en) | 1984-11-21 | 1984-11-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0316244Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007207818A (en) * | 2006-01-31 | 2007-08-16 | Matsushita Electric Ind Co Ltd | Barista |
-
1984
- 1984-11-21 JP JP17790184U patent/JPH0316244Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007207818A (en) * | 2006-01-31 | 2007-08-16 | Matsushita Electric Ind Co Ltd | Barista |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6192005U (en) | 1986-06-14 |
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