JPS5843187Y2 - Spark plug cap for internal combustion engine - Google Patents
Spark plug cap for internal combustion engineInfo
- Publication number
- JPS5843187Y2 JPS5843187Y2 JP3425879U JP3425879U JPS5843187Y2 JP S5843187 Y2 JPS5843187 Y2 JP S5843187Y2 JP 3425879 U JP3425879 U JP 3425879U JP 3425879 U JP3425879 U JP 3425879U JP S5843187 Y2 JPS5843187 Y2 JP S5843187Y2
- Authority
- JP
- Japan
- Prior art keywords
- spark plug
- internal combustion
- cap
- combustion engine
- plug cap
- 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.)
- Expired
Links
Landscapes
- Spark Plugs (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関用点火栓の碍子部の湿潤等による電
気的短路事故防止を主なる目的とし、特に小形化した点
火栓に対する完全防水並に短絡事故防止に適し、この目
的で複数におよぶ可撓性舌片輪を設けて防水性能並に短
絡抵抗を向上せしめるとともに、確実に取着可能なもの
とし小形点火栓の使用に支障なからしめんとするもので
ある。[Detailed description of the invention] The main purpose of this invention is to prevent electrical short-circuit accidents caused by moisture in the insulator part of spark plugs for internal combustion engines, and is particularly suitable for completely waterproofing compact ignition plugs and preventing short-circuit accidents. For this purpose, a plurality of flexible tongue ring rings are provided to improve waterproof performance and short circuit resistance, and to ensure that they can be attached securely without interfering with the use of small spark plugs. be.
以下実施例について詳細な説明を行う。Examples will be described in detail below.
図は、本考案実施例点火栓キャップの縦断面図である。The figure is a longitudinal cross-sectional view of a spark plug cap according to an embodiment of the present invention.
図示の実施例において、点火栓１の上部碍子部３に高分
子材料よりなる点火栓キャップ２を嵌装して、キャップ
２上部に配設した電導材料よりなる端子用コイル１１に
よって点火栓１の端子９と連結し、前記端子用コイル１
１は、キャップ２と一体に設けた高圧コード装着管７に
挿入した高圧コード８と端子用コイル延在部１０を介し
て電気的に連結している。In the illustrated embodiment, an ignition plug cap 2 made of a polymeric material is fitted onto an upper insulator 3 of the ignition plug 1, and a terminal coil 11 made of a conductive material disposed on the upper part of the cap 2 is used to close the ignition plug 1. Connected to the terminal 9, the terminal coil 1
1 is electrically connected to a high voltage cord 8 inserted into a high voltage cord mounting tube 7 provided integrally with the cap 2 via a terminal coil extension 10.
かくて点火栓キャップ２は前記端子用コイル１１によっ
て点火栓１に固定される。The ignition plug cap 2 is thus fixed to the ignition plug 1 by the terminal coil 11.
点火栓の端子９部には頚部１２が設けられていて連結に
便ならしめている。A neck portion 12 is provided on the terminal 9 portion of the spark plug to facilitate connection.
以上説明した点火栓とキャップの関係において、特に小
形点火栓では碍子部３の長さは減縮され一例として呼称
１０粍径の点火栓では、略８．５粍程度（１４粍径のも
ので１４粍）であり、端子９と点火栓締付部１３又はシ
リンダヘッド（図示せず）との間で高圧電気の短絡が発
生し易い状態になっている。In the relationship between the ignition plug and the cap explained above, the length of the insulator part 3 is reduced especially in the case of a small ignition plug. Therefore, a short circuit of high-voltage electricity is likely to occur between the terminal 9 and the spark plug tightening portion 13 or the cylinder head (not shown).
さらに碍子部にキャップ抜は止め用の環状溝も設けられ
ていないものもある。Furthermore, some insulators do not have an annular groove to prevent the cap from being removed.
本考案はこのような小形点火栓用キャップ２に対し、点
火栓１の碍子部３の周囲の部分に適当な間隙４を保つ高
分子材料よりなるキャップ２の蓋側５の内側に複数の可
撓性舌片６を輪設してあり、キャップ２を点火栓１に装
着する際点火栓１の端子９側に前記舌片６が湾曲して前
記碍子部３の外周を抱囲し強固な密着を可能ならしめた
ことを特徴としている。The present invention provides a cap 2 for such a small spark plug 1 with a plurality of holes on the inside of the lid side 5 of the cap 2 made of a polymeric material to maintain an appropriate gap 4 around the insulator part 3 of the spark plug 1. A flexible tongue piece 6 is arranged in a circular manner, and when the cap 2 is attached to the spark plug 1, the tongue piece 6 curves toward the terminal 9 side of the spark plug 1 to surround the outer periphery of the insulator part 3 and provide a strong structure. It is characterized by allowing close contact.
すなわち取着状態で舌片６が端子９側にまくれ上がって
いる点が特徴要件である。That is, the feature requirement is that the tongue piece 6 is curled up toward the terminal 9 side in the attached state.
この結果点火栓碍子部の雨水、汚水、海水などによる汚
染・湿潤を防止し、キャップと碍子部の接触面積を確保
し、電気的な短絡を基本的に防止し、さらには取着はご
く簡単に行なえるにもかかわらず碍子部との強固な密着
を可能にして、特に抜は止め手段を設けなくても不時の
脱落を防止する等、特に小形点火栓の実用に支障なから
しめることができる。As a result, the ignition plug insulator is prevented from being contaminated or moistened by rainwater, sewage, seawater, etc., the contact area between the cap and the insulator is secured, electrical short circuits are basically prevented, and installation is extremely easy. To make it possible to have a strong adhesion with the insulator part even though it can be used for a long time, and to prevent accidental falling off even without providing a means to prevent it from falling off, so that it does not hinder the practical use of small ignition plugs in particular. I can do it.
図は本考案実施例点火栓キャップの縦断面図である。
１・・・・・・点火栓、２・・・・・・点火栓キャップ
、３・・・・・・碍子部、４・・・・・・間隙、５・・
・・・・蓋側、６・・・・・・可撓性舌片、９・・・・
・・端子。The figure is a longitudinal cross-sectional view of a spark plug cap according to an embodiment of the present invention. 1... Spark plug, 2... Spark plug cap, 3... Insulator section, 4... Gap, 5...
... Lid side, 6 ... Flexible tongue piece, 9 ...
...Terminal.
Claims (1)
を保つ蓋側５を設け、該蓋側５の内側に前記碍子部３の
外周を端子９側に湾曲して抱囲し密着可能ならしめた複
数の可撓性舌片６を輪設してなる内燃機関用点火栓キャ
ップThe insulator part 3 of the ignition plug 1 is made of a polymeric material and the appropriate gap 4 is formed.
A lid side 5 is provided, and a plurality of flexible tongues 6 are provided inside the lid side 5, and a plurality of flexible tongue pieces 6 are arranged inside the lid side 5 so as to curve the outer periphery of the insulator part 3 toward the terminal 9 side so as to enclose it so that it can be tightly attached. Spark plug cap for internal combustion engine
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3425879U JPS5843187Y2 (en) | 1979-03-19 | 1979-03-19 | Spark plug cap for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3425879U JPS5843187Y2 (en) | 1979-03-19 | 1979-03-19 | Spark plug cap for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55135388U JPS55135388U (en) | 1980-09-26 |
| JPS5843187Y2 true JPS5843187Y2 (en) | 1983-09-29 |
Family
ID=28891291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3425879U Expired JPS5843187Y2 (en) | 1979-03-19 | 1979-03-19 | Spark plug cap for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843187Y2 (en) |
-
1979
- 1979-03-19 JP JP3425879U patent/JPS5843187Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55135388U (en) | 1980-09-26 |
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