JPH0443890U

JPH0443890U -

Info

Publication number: JPH0443890U
Application number: JP8576490U
Authority: JP
Priority date: 1990-08-13
Filing date: 1990-08-13
Publication date: 1992-04-14

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の点火プラグの断面
図、第２図はその点火プラグの側面図、第３図は
中央電極棒６の端部６ａ付近の分解斜視図、第４
図は本考案の他の実施例の電極２１の製造工程を
示す斜視図、第５図はその電極２１の斜視図、第
６図は本考案の他の実施例の電極３１の断面図、
第７図はその電極３１とそれに関連して用いられ
る取付部材３９の斜視図、第８図は第６図および
第７図に示される電極３１を備える点火プラグの
一部の断面図、第９図は先行技術の側面図である
。６……中央電極棒、６ａ……端部、７……外筒
、１０……電気絶縁体、１１，１２……シール材
、１３，２１，３１……電極、１４，１５，２４
，２５，３２，３３……脚部、１７，１８，２８
，２９，３５，３６……基端部、１６，２６，３
４……連結部、ｄ２……火花間隙。 FIG. 1 is a sectional view of a spark plug according to an embodiment of the present invention, FIG. 2 is a side view of the spark plug, FIG. 3 is an exploded perspective view of the vicinity of the end 6a of the central electrode rod 6, and FIG.
The figure is a perspective view showing the manufacturing process of an electrode 21 according to another embodiment of the present invention, FIG. 5 is a perspective view of the electrode 21, and FIG. 6 is a sectional view of an electrode 31 according to another embodiment of the present invention.
FIG. 7 is a perspective view of the electrode 31 and a mounting member 39 used in connection therewith, FIG. 8 is a cross-sectional view of a part of the spark plug equipped with the electrode 31 shown in FIGS. 6 and 7, and FIG. The figure is a side view of the prior art. 6... Central electrode rod, 6a... End, 7... Outer cylinder, 10... Electric insulator, 11, 12... Seal material, 13, 21, 31... Electrode, 14, 15, 24
, 25, 32, 33...leg, 17, 18, 28
, 29, 35, 36... base end, 16, 26, 3
4... Connecting portion, d2... Spark gap.

Claims

[Claims for Utility Model Registration] An electrical insulator is interposed between the central electrode rod and an outer cylinder surrounding the central electrode rod, and a spark gap is provided between the outer cylinder and the end of the central electrode rod. In a spark plug to which an electrode is fixed after opening, the electrode has a base end fixed to the outer cylinder;
An ignition plug characterized in that it has a connecting part connected to the base end part and facing the end part of the central electrode rod with a spark gap therebetween, and is formed roughly in a U-shape.