JPS61104996U - - Google Patents
Info
- Publication number
- JPS61104996U JPS61104996U JP19106684U JP19106684U JPS61104996U JP S61104996 U JPS61104996 U JP S61104996U JP 19106684 U JP19106684 U JP 19106684U JP 19106684 U JP19106684 U JP 19106684U JP S61104996 U JPS61104996 U JP S61104996U
- Authority
- JP
- Japan
- Prior art keywords
- pair
- cylindrical body
- hollow cylindrical
- main electrodes
- trigger
- 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
- 230000008018 melting Effects 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 238000003466 welding Methods 0.000 claims 2
- 241001226615 Asphodelus albus Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
Description
第１図は本考案の一実施例による過電圧保護素
子の構成を示す縦断面図、第２図〜第４図はそれ
ぞれ本考案の他の実施例による過電圧保護素子の
構成を示す縦断面図である。
１…中空筒体、２，３，１２，１３，２２．２
３，３２，３３…主電極、２′，３′…主放電面
、４，５…凹欠部、６，７，１６，１７，２６，
３６…トリガー電極、８，８′，９，９′…銀ロ
ー。
FIG. 1 is a vertical cross-sectional view showing the structure of an overvoltage protection element according to one embodiment of the present invention, and FIGS. 2 to 4 are longitudinal cross-sectional views showing the structure of overvoltage protection elements according to other embodiments of the present invention. be. 1...Hollow cylindrical body, 2, 3, 12, 13, 22.2
3, 32, 33... Main electrode, 2', 3'... Main discharge surface, 4, 5... Concave cutout, 6, 7, 16, 17, 26,
36...Trigger electrode, 8,8',9,9'...Silver rod.
Claims (1)
成するように前記中空筒体の両端開口部にそれぞ
れ低融点金属の溶着により気密に装着され、前記
中空筒体内において主放電面が互いに間隙を有し
て対向する前記中空筒体より熱膨張係数の大きな
導電部材で形成された一対の主電極と、前記一対
の主電極の少くとも一方の主放電面部に形成され
た凹欠部と、前記一対の主電極の各とそれぞれ導
電的に接続され、前記凹欠部内において互いに対
向してトリガー放電間隙を形成する一対のトリガ
ー電極とを具備し、前記トリガー放電間隙の間隙
寸法は、前記トリガー放電間隙を互いに接触させ
た状態で前記一対の主電極を前記中空筒体の両端
開口部にそれぞれ低融点金属の溶着により気密に
装着し、その装着後に室温まで冷却したときに前
記一対の主電極と記中空筒体との熱膨張係数の差
により生ずる隙寸法にしてなることを特徴とする
過電圧保護素子。 A hollow cylindrical body formed of an insulating member is airtightly attached to both end openings of the hollow cylindrical body by welding a low melting point metal to form a sealed chamber, and the main discharge surfaces are spaced apart from each other within the hollow cylindrical body. a pair of main electrodes formed of a conductive member having a larger coefficient of thermal expansion than the hollow cylindrical body facing each other, and a recessed notch formed in at least one main discharge surface of the pair of main electrodes; a pair of trigger electrodes that are electrically conductively connected to each of the pair of main electrodes and oppose each other in the recessed part to form a trigger discharge gap, and the gap size of the trigger discharge gap is equal to or smaller than the trigger The pair of main electrodes are airtightly attached to the openings at both ends of the hollow cylindrical body by welding a low melting point metal with the discharge gaps in contact with each other, and when the pair of main electrodes is cooled to room temperature after being attached, the pair of main electrodes are cooled to room temperature. An overvoltage protection element having a gap size caused by a difference in coefficient of thermal expansion between the hollow cylindrical body and the hollow cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19106684U JPS61104996U (en) | 1984-12-17 | 1984-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19106684U JPS61104996U (en) | 1984-12-17 | 1984-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61104996U true JPS61104996U (en) | 1986-07-03 |
Family
ID=30748508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19106684U Pending JPS61104996U (en) | 1984-12-17 | 1984-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61104996U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617888B2 (en) * | 1975-04-30 | 1986-03-10 | Hitachi Ltd |
-
1984
- 1984-12-17 JP JP19106684U patent/JPS61104996U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617888B2 (en) * | 1975-04-30 | 1986-03-10 | Hitachi Ltd |
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