JPS62150680A - Ignition plug - Google Patents
Ignition plugInfo
- Publication number
- JPS62150680A JPS62150680A JP29650085A JP29650085A JPS62150680A JP S62150680 A JPS62150680 A JP S62150680A JP 29650085 A JP29650085 A JP 29650085A JP 29650085 A JP29650085 A JP 29650085A JP S62150680 A JPS62150680 A JP S62150680A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- magnetic
- spark plug
- terminal electrode
- glass
- 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
Links
Landscapes
- Spark Plugs (AREA)
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
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、点火プラグに関し、雑音電波障害の防止効果
を改善した内燃機関等に用いられる点火プラグに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a spark plug, and more particularly, to a spark plug used in internal combustion engines, etc., which has an improved effect of preventing noise radio wave interference.
雑音電波の発生抑制方法の一例として、特開昭５４−１
５１７３６号公報に記された如きものがある。その構成
は、点火プラグ内部にフェライトからなる磁性体筒に孔
を設け、該孔中ヘカーボン等を導電体とする抵抗体を形
成して、ガラス封着を行ったものとなっている。As an example of a method for suppressing the generation of noise radio waves, JP-A-54-1
There is one as described in Publication No. 51736. Its structure is such that a hole is provided in a magnetic cylinder made of ferrite inside the spark plug, and a resistor made of carbon or the like as a conductor is formed in the hole and sealed with glass.
しかしながら、絶縁碍子の中空孔ヘフエライトから成る
磁性体をガラス封着する作業は面倒であり、かつ封着時
のガラスにより確実に固定するのは困難である。However, the work of sealing the hollow-hole hephelite magnetic material of the insulator with glass is troublesome, and it is difficult to securely fix it with the glass during sealing.
本発明はガラス封着の構造を止めて、点火プラグの端子
電極の頭部にフェライトより成る磁性体を固定したもの
である。The present invention eliminates the glass sealing structure and fixes a magnetic material made of ferrite to the head of the terminal electrode of the spark plug.
本発明においては、ガラス封着の必要がないため、該封
着作業を廃止することができ、またガラス封着に比べて
確実な磁性体の固定が達成できる。In the present invention, since there is no need for glass sealing, the sealing work can be eliminated, and the magnetic material can be fixed more reliably than glass sealing.
従って、本発明によれば、従来の問題点を解決した点火
プラグを得ることができる。Therefore, according to the present invention, it is possible to obtain a spark plug that solves the conventional problems.
第１図は、本発明の第１実施例の縦断面図で、高圧ケー
ブルの導体が接続されるターミナル７と、ターミナル取
付ネジ部２ａを備えた端子電極２との間に第２図の磁性
体筒８を設置したものである。FIG. 1 is a longitudinal cross-sectional view of the first embodiment of the present invention, in which the magnetic field shown in FIG. A body cylinder 8 is installed.
磁性体筒８は、ターミーナル取付ネジ部２ａに緊密に嵌
合できる寸法を有し、設置後はターミナル７によって締
付けられ、端子電極２へ固定接続されている。なお、タ
ーミナル７は金属からなる端子であり、磁性体筒８は、
Ｎｉ３０％、Ｚｎ７０％よりなるＮｉ−Ｚｎ系のフェラ
イト焼結体である。なお、図中１は絶縁碍子、３は中心
電極、４は接地電極、５はハウジング、６は抵抗体で、
例えばＺｒ０．４．５ｗｔ％、カーボン０．９ ｗ ｔ
％、および残部シリコン系ガラスの組成より成る。The magnetic cylinder 8 has dimensions that allow it to be tightly fitted into the terminal mounting screw portion 2a, and after installation, it is tightened by the terminal 7 and fixedly connected to the terminal electrode 2. Note that the terminal 7 is a terminal made of metal, and the magnetic tube 8 is
This is a Ni-Zn based ferrite sintered body consisting of 30% Ni and 70% Zn. In the figure, 1 is an insulator, 3 is a center electrode, 4 is a ground electrode, 5 is a housing, and 6 is a resistor.
For example, Zr0.4.5wt%, carbon 0.9wt%
%, and the balance consists of silicon-based glass.
従来の構成に比較し、さらに磁性体筒８を設置すること
により、インダクタンス成分を特に付加させ、点火プラ
グの火花放電の際の容量放電電流をより低減でき、その
ため、雑音電波障害の防止効果に助奏する。また第４図
は第１実施例により作製した磁性体装着点火プラグと従
来プラグ（抵抗体内蔵）との周波数に対する雑音電界強
度の特性を比較したものである。なお、この両プラグの
抵抗体は前記した組成となっている。第４図の如く本実
施例の方が周波数が高い領域で顕著に影響し、高い電波
雑音防止効果が得られている。Compared to the conventional configuration, by further installing the magnetic tube 8, an inductance component is particularly added, and the capacitive discharge current during spark discharge of the ignition plug can be further reduced, thereby improving the effect of preventing noise radio wave interference. Assist. Further, FIG. 4 compares the characteristics of the noise electric field intensity with respect to frequency between the magnetic material-equipped spark plug manufactured according to the first embodiment and a conventional plug (with built-in resistor). Note that the resistors of both plugs have the compositions described above. As shown in FIG. 4, in this embodiment, the influence is more pronounced in the high frequency region, and a high radio noise prevention effect is obtained.
〈第２実施例〉
第３図は、磁性体筒８の内径部にネジ部８ａを設け、端
子電極２のネジ部２ａへ単独で固定接続を可能にしたも
のである。<Second Embodiment> In FIG. 3, a threaded portion 8a is provided on the inner diameter portion of the magnetic tube 8 to enable fixed connection to the threaded portion 2a of the terminal electrode 2 independently.
く第３実施例〉
第５図は、磁性体筒８を、端子電極２のうち絶縁碍子１
の中空孔内部に位置する部分に緊密に挿入し、上部をタ
ーミナル７により締付は固定したものである。3rd Embodiment> FIG.
It is tightly inserted into the part located inside the hollow hole, and the upper part is fixed by tightening with the terminal 7.
く第４実施例〉
第６図は端子電極２の頭部にターミナル取付ネジ部２ｂ
を設け、磁性体筒８を介して端子電極接合ネジ部７ｂを
有したターミナル７によって、締付は固定接続したもの
である。なお、このとき磁性体８は第２，３図のどちら
の構造でもよい。4th Embodiment> Figure 6 shows a terminal mounting screw part 2b on the head of the terminal electrode 2.
A terminal 7 having a terminal electrode connecting threaded portion 7b is used to securely connect the terminal 7 through a magnetic cylinder 8. In this case, the magnetic body 8 may have either structure shown in FIGS. 2 or 3.
〈第５実施例〉
第７図は端子電極２とターミナル７との接続を連結ネジ
９を介して行うものであり、その間に磁性体筒８を設置
した構造である。なお、このとき磁性体８は第２図の構
造である。<Fifth Embodiment> FIG. 7 shows a structure in which the terminal electrode 2 and the terminal 7 are connected via a connecting screw 9, and a magnetic tube 8 is installed between them. Incidentally, at this time, the magnetic body 8 has the structure shown in FIG.
く第６実施例〉
第８図は、端子電極２の頭部にターミナル取付孔２Ｃを
設け、これらに磁性体筒８を介しで端子電極接合小径部
７Ｃを有したターミナル７を挿入、両者をロー付けした
ものである。6th Embodiment> FIG. 8 shows a terminal mounting hole 2C provided in the head of the terminal electrode 2, a terminal 7 having a terminal electrode joining small diameter portion 7C inserted into these through a magnetic tube 8, and both connected. It is soldered.
以上の第２．３，４．５．６実施例の如き例に於いても
、高い周波数で第１開実例同様に雑音電界強度が従来の
点火プラグに対して、小さくなり雑音電波の防止効果が
大きかった。In examples such as the above-mentioned 2.3 and 4.5.6 embodiments, the noise electric field strength is smaller than that of the conventional spark plug at high frequencies, and the effect of preventing noise radio waves is obtained, as in the first open example. was big.
なお、本発明は抵抗体６（第１図）を持たないものにも
適用できる。この場合、抵抗体６の部分は導電性の封着
ガラスとなる。Note that the present invention can also be applied to a device that does not have the resistor 6 (FIG. 1). In this case, the resistor 6 portion becomes conductive sealing glass.
第１図は本発明の第１実施例を示す断面図、第２図は第
１図の磁性体筒を示す断面図、第３図および第５図ない
し第８図はいずれも本発明の第２ないし第６実施例を示
す断面図、第４図は本発明の説明に供する特性図である
。
２・・・端子電極、８・・・磁性体筒。
代理人弁理士 岡 部 隆
第１図
扁 シ皮、１欠、（ＭＨス）
第４図
（化Ｍ（施伽）フ
第５図FIG. 1 is a sectional view showing the first embodiment of the present invention, FIG. 2 is a sectional view showing the magnetic cylinder shown in FIG. 1, and FIG. 3 and FIGS. FIG. 4 is a cross-sectional view showing the second to sixth embodiments, and a characteristic diagram for explaining the present invention. 2... Terminal electrode, 8... Magnetic tube. Representative Patent Attorney Takashi Okabe Fig. 1, 1, (MH) Fig. 4
Claims (1)
たことを特徴とする点火プラグ。A spark plug characterized by having a magnetic material made of ferrite fixed to the head of a terminal electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29650085A JPS62150680A (en) | 1985-12-24 | 1985-12-24 | Ignition plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29650085A JPS62150680A (en) | 1985-12-24 | 1985-12-24 | Ignition plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62150680A true JPS62150680A (en) | 1987-07-04 |
Family
ID=17834352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29650085A Pending JPS62150680A (en) | 1985-12-24 | 1985-12-24 | Ignition plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62150680A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05343155A (en) * | 1990-09-26 | 1993-12-24 | Eyquem | Improved spark plug for internal combustion engine |
| JP2014207076A (en) * | 2013-04-11 | 2014-10-30 | 株式会社デンソー | Spark plug for internal combustion engine |
| WO2017010341A1 (en) * | 2015-07-13 | 2017-01-19 | 株式会社デンソー | Ignition device |
| WO2017110015A1 (en) * | 2015-12-24 | 2017-06-29 | 日本特殊陶業株式会社 | Spark plug |
-
1985
- 1985-12-24 JP JP29650085A patent/JPS62150680A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05343155A (en) * | 1990-09-26 | 1993-12-24 | Eyquem | Improved spark plug for internal combustion engine |
| JP2014207076A (en) * | 2013-04-11 | 2014-10-30 | 株式会社デンソー | Spark plug for internal combustion engine |
| WO2017010341A1 (en) * | 2015-07-13 | 2017-01-19 | 株式会社デンソー | Ignition device |
| WO2017110015A1 (en) * | 2015-12-24 | 2017-06-29 | 日本特殊陶業株式会社 | Spark plug |
| JP2017117626A (en) * | 2015-12-24 | 2017-06-29 | 日本特殊陶業株式会社 | Spark plug |
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