JPS59159886U

JPS59159886U - spark plug

Info

Publication number: JPS59159886U
Application number: JP5498483U
Authority: JP
Inventors: 川尻　弘樹; 純一古川
Original assignee: 日産自動車株式会社
Priority date: 1983-04-13
Filing date: 1983-04-13
Publication date: 1984-10-26

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の点火栓の装着状態を示す要部断面図、第
２図は第１図ａｙＡ部拡大断面図である。第３図、第４図は本考案の第１実施例で、第３図は第２
図に対応する拡大断面図、第４図は第３図に対応し、加
工前の中心電極先端を示す図であり、第５図は第２実施
例で、第３図に対応する図である。第６図、第７図は第
３実施例で、第６図は第２図は対応する図、第７図は第
６図に鄭し、加工前の中心電極先端を示す図であり、第
８図、第９図はそれぞれ第４、第５実施例で、いずれも
第６図に対応する図である。第１０図は第６実施例で、
第２図に対応する図、第１′１図は第７実施例で、第１
０図に対応する図である。１・・・点火栓、４・・・中心電極、８・・・外側電極
、１０・・・電極チップ、１１・・・小径部、１２−・
・・空洞、１３．１５・・・曲り代、１４・・・溝、１
６・・・近傍部分。FIG. 1 is a sectional view of a main part showing a state in which a conventional spark plug is installed, and FIG. 2 is an enlarged sectional view of ayA section in FIG. 1. Figures 3 and 4 show the first embodiment of the present invention, and Figure 3 shows the second embodiment.
FIG. 4 is an enlarged sectional view corresponding to the figure, FIG. 4 is a diagram corresponding to FIG. 3 and is a diagram showing the tip of the center electrode before processing, and FIG. 5 is a diagram corresponding to the second embodiment and FIG. 3. . FIGS. 6 and 7 show the third embodiment, FIG. 6 is a corresponding view of FIG. 2, and FIG. 7 is a view corresponding to FIG. 8 and 9 show the fourth and fifth embodiments, respectively, and both correspond to FIG. 6. FIG. 10 shows the sixth embodiment,
The figure corresponding to Fig. 2, Fig. 1'1, is the seventh embodiment, and the first
It is a figure corresponding to figure 0. DESCRIPTION OF SYMBOLS 1... Spark plug, 4... Center electrode, 8... Outer electrode, 10... Electrode tip, 11... Small diameter part, 12-...
...Cavity, 13.15...Bending allowance, 14...Groove, 1
6...Nearby part.

Claims

[Scope of utility model registration request]

In a spark plug equipped with a center electrode and an outer electrode whose tip is bent toward the inner circumference and faces the center electrode across a discharge gap, a cavity is provided at the tip of the center electrode, and the electrode tip inserted into the cavity is inserted into the spark plug. A spark plug characterized in that it is tightened and held in one position facing the tip of an outer electrode.