JPH0170222U

JPH0170222U -

Info

Publication number: JPH0170222U
Application number: JP1987166666U
Authority: JP
Priority date: 1987-10-29
Filing date: 1987-10-29
Publication date: 1989-05-10

Description

[Brief explanation of the drawing]

第１図は本考案を懸垂型の避雷碍子に具体化し
た一実施例を示す要部の縦断面図、第２図は第１
図のＡ―Ａ線断面図、第３図は避雷碍子を示す半
縦断面図、第４図は避雷碍子の使用状態を示す正
面図、第５図は本考案の別例を示す要部の断面図
、第６図は第５図のＢ―Ｂ線断面図、第７図及び
第８図はそれぞれ従来例を示す部分断面図である
。３……避雷碍子、５……碍子本体、５ａ……笠
部、５ｃ……頭部、５ｄ……取付筒部、５ｅ……
貫通穴、７……キヤツプ金具、８……ピン金具、
９……限流素子、１０……溶接、１１……上部電
極、１２……下部電極、１３……無機質結合材、
１４……放圧孔、１５……破裂板、１８，１９…
…リード線。 Figure 1 is a vertical cross-sectional view of the main parts of an embodiment of the present invention as a suspension type lightning arrester;
3 is a half-longitudinal sectional view showing the lightning arrester, FIG. 4 is a front view showing the usage state of the lightning arrester, and FIG. 5 is a main part showing another example of the present invention. 6 is a sectional view taken along line BB in FIG. 5, and FIGS. 7 and 8 are partial sectional views showing a conventional example, respectively. 3...Lightning arrester, 5...Insulator body, 5a...Kasabe, 5c...Head, 5d...Mounting cylinder part, 5e...
Through hole, 7...Cap metal fitting, 8...Pin metal fitting,
9... Current limiting element, 10... Welding, 11... Upper electrode, 12... Lower electrode, 13... Inorganic binding material,
14...Pressure release hole, 15...Rupture disc, 18, 19...
…Lead.

Claims

[Claims for Utility Model Registration] 1. A current limiting element with non-linear voltage-current characteristics is housed inside the mounting tube, and electrically insulating ceramic, conductive ceramic, or conductive material is used at both upper and lower ends of the mounting tube. An upper electrode and a lower electrode made of a metal having a property are hermetically sealed with glass, glass solder, or an inorganic bonding material such as a metal, and a pressure release hole is formed in the upper electrode, the lower electrode, or the end of the mounting tube. established,
A rupture plate with a low melting point that melts and ruptures earlier than other parts due to high temperature is joined and welded to the same pressure relief hole.
A lightning arrester characterized in that the inside of the mounting tube is hermetically sealed. 2. The lightning arrester has a cap fitting 7 attached to a covered cylindrical head 5c formed at the upper center of the shade portion 5a of the insulator body 5.
It is a suspension type lightning arrester constructed by fixing a pin fitting 8 on the inside of the head 5c, and a mounting cylinder part 5d having a through hole 5e is provided in the cap part 5a. , the current limiting element 9 is inserted into the through hole 5e, and the upper electrode 11 and the cap fitting 7, the lower electrode 12 and the pin fitting 8 are connected to the lead wires 18 and 19, respectively.
The lightning arrester according to claim 1 of the utility model registration, which is electrically connected to the lightning arrester according to claim 1 of the utility model registration claim. 2. The lightning arrester according to claim 1, wherein the inorganic binding material 13 for melting and bonding the upper electrode 11 and the lower electrode 12 to the mounting cylinder portion 5d has different melting points.