JPS60140392U - spark plug - Google Patents

spark plug

Info

Publication number
JPS60140392U
JPS60140392U JP2766184U JP2766184U JPS60140392U JP S60140392 U JPS60140392 U JP S60140392U JP 2766184 U JP2766184 U JP 2766184U JP 2766184 U JP2766184 U JP 2766184U JP S60140392 U JPS60140392 U JP S60140392U
Authority
JP
Japan
Prior art keywords
spark plug
electrode
tip
rod
mounting bracket
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
Application number
JP2766184U
Other languages
Japanese (ja)
Inventor
雅仁 森田
Original Assignee
日本特殊陶業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日本特殊陶業株式会社 filed Critical 日本特殊陶業株式会社
Priority to JP2766184U priority Critical patent/JPS60140392U/en
Publication of JPS60140392U publication Critical patent/JPS60140392U/en
Pending legal-status Critical Current

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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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案になる点火プラグの側面図、第２図は本
考案になる別の態様の点火プラグの上半部の側面図、そ
して第３図は本考案の点火プラグと同種の在来の点火プ
ラグと、本考案の点火プラグとについて希薄着火限界の
比較評価を行なったグラフである。 図中１・・・棒状中心電極、２・・・筒状取付金具、３
．４・・・棒状外側電極、５，６・・・外側電極の上縁
部、Ａ・・・放電空隙、Ｂ・・・本考案の点火プラグと
同種の在来点火プラグの描いた希薄着火限界グラフ、Ｃ
・・・放電ギャップ０．８団の本考案の点火プラグの描
いた希薄着火限界グラフ、Ｄ・・・放電ギャッ゛　プ１
．１ｍ＋ｙ＋の在来点火プラグの描いた希薄着火限界グ
ラフ。Fig. 1 is a side view of the spark plug of the present invention, Fig. 2 is a side view of the upper half of the spark plug of the present invention, and Fig. 3 is a side view of the spark plug of the present invention. 1 is a graph showing a comparative evaluation of the lean ignition limit between a conventional spark plug and a spark plug of the present invention. In the figure 1... Rod-shaped center electrode, 2... Cylindrical mounting bracket, 3
．． 4... Rod-shaped outer electrode, 5, 6... Upper edge of the outer electrode, A... Discharge gap, B... Lean ignition limit drawn by the spark plug of the present invention and the same type of conventional spark plug. graph, C
...Lean ignition limit graph drawn by the spark plug of the present invention with a discharge gap of 0.8, D...Discharge gap 1
．． Lean ignition limit graph drawn for a 1m+y+ conventional spark plug.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）棒状中心電極の周りに絶縁体を介して筒状取付金
具を外嵌し、該取付金具に１または２本以上の棒状外側
電極を取付け、該外側電極の先端部を折り曲げて前記中
心電極の先端部外側面と対向させ放電空隙を形成するよ
うに構成された点火プラグにおいて、 前記外側電極の先端面上縁部の角度が鋭角をなしている
ことを特徴とする点火プラグ。(1) Fit a cylindrical mounting bracket around the rod-shaped center electrode via an insulator, attach one or more rod-shaped outer electrodes to the mounting bracket, bend the tip of the outer electrode, and then What is claimed is: 1. A spark plug configured to face an outer surface of a tip end of an electrode to form a discharge gap, characterized in that an upper edge of the tip surface of the outer electrode forms an acute angle. （２）前記外側電極の先端面上縁部の角度が３０〜４５
度であることを特徴とする実用新案登録請求の範囲第１
項記載の点火プラグ。(2) The angle of the upper edge of the tip surface of the outer electrode is 30 to 45
Scope of Claims for Utility Model Registration characterized by:
Spark plugs listed in section.
JP2766184U 1984-02-27 1984-02-27 spark plug Pending JPS60140392U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2766184U JPS60140392U (en) 1984-02-27 1984-02-27 spark plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2766184U JPS60140392U (en) 1984-02-27 1984-02-27 spark plug

Publications (1)

Publication Number Publication Date
JPS60140392U true JPS60140392U (en) 1985-09-17

Family

ID=30524825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2766184U Pending JPS60140392U (en) 1984-02-27 1984-02-27 spark plug

Country Status (1)

Country Link
JP (1) JPS60140392U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4721566B2 (en) * 2001-06-29 2011-07-13 日本特殊陶業株式会社 Spark plug and method of manufacturing spark plug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4721566B2 (en) * 2001-06-29 2011-07-13 日本特殊陶業株式会社 Spark plug and method of manufacturing spark plug

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