JPS6062792U

JPS6062792U - spark plug

Info

Publication number: JPS6062792U
Application number: JP15580283U
Authority: JP
Inventors: 内田　孝治
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-10-07
Filing date: 1983-10-07
Publication date: 1985-05-02

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、この考案の第１実施例を示す点火プラグの一
部切断正面図である。第２図は、この考案の第１実施例
を示す拡大断面図である。第３図は、この考案の第２実
施例を示す拡大断面図である。第４図は、この考案の第
３実施例を示す一部を断面とした拡大斜視図である。第
５図は、この考案の第４実施例を示す一部を断面とした
拡大斜視図である。１：中心電極、２：中心電極の燃焼室側端面（中心電極
端面）、３：外側電極、４：放電面、５：外側電極アナ
、６：中心電極アナ、７：角部。FIG. 1 is a partially cutaway front view of a spark plug showing a first embodiment of this invention. FIG. 2 is an enlarged sectional view showing a first embodiment of this invention. FIG. 3 is an enlarged sectional view showing a second embodiment of this invention. FIG. 4 is an enlarged perspective view, partially in section, showing a third embodiment of this invention. FIG. 5 is an enlarged perspective view, partially in section, showing a fourth embodiment of this invention. 1: center electrode, 2: end surface of the center electrode on the combustion chamber side (center electrode end surface), 3: outer electrode, 4: discharge surface, 5: outer electrode hole, 6: center electrode hole, 7: corner.

Claims

[Claims for Utility Model Registration] 1. An outer electrode hole 5 is provided on the discharge surface 4 of the outer electrode 3 facing the combustion chamber side end surface 2 of the center electrode 1 (hereinafter referred to as the center electrode end surface), and A center electrode hole 6 is provided on the center electrode end surface 2 facing the discharge surface 4 of the outer electrode 3.
A spark plug with a 2. The spark plug according to claim 1, wherein the outer electrode connector 5 does not penetrate the outer electrode 3. 3. The spark plug according to claim 1, wherein the outer electrode hole 5 penetrates the outer electrode 3. 4. The shape of the outer electrode hole 5 when viewed from the direction of the center electrode hole 6 is circular, and the shape of the center electrode hole 6 when viewed from the direction of the outer electrode hole 5 is also circular, and the shape of the outer electrode hole 5 is circular.
The spark plug according to claim 1, 2, or 3, wherein the inner diameter of the center electrode is smaller than the outer diameter of the end face 2 of the center electrode.