JPS62150681A - Ignition plug with resistor - Google Patents
Ignition plug with resistorInfo
- Publication number
- JPS62150681A JPS62150681A JP29649985A JP29649985A JPS62150681A JP S62150681 A JPS62150681 A JP S62150681A JP 29649985 A JP29649985 A JP 29649985A JP 29649985 A JP29649985 A JP 29649985A JP S62150681 A JPS62150681 A JP S62150681A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- magnetic
- hollow hole
- ferrite
- spark plug
- 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、抵抗体入り点火プラグに関し、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 containing a resistor, 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号公報に記載された如きのものがある。その
構成は、点火プラグ内部に、磁性材料のセラミック（フ
ェライト）筒内孔中ヘカーボンを導電体とする抵抗体を
形成してガラス封着を行な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 such as that described in Japanese Patent No. 51736. The structure is such that a resistor made of carbon as a conductor is formed inside a ceramic (ferrite) cylinder hole made of magnetic material and sealed with glass.
しかしながら、セラミック磁性体内孔に、ガラス質抵抗
体粉末を充填して約９００℃の高温加熱処理を行うと、
ガラス質抵抗体粉末中の導電体カーボンがフェライトと
反応し、鉄炭化物となる。However, if the pores of the ceramic magnetic body are filled with glassy resistor powder and subjected to high-temperature heat treatment at approximately 900°C,
The conductor carbon in the glassy resistor powder reacts with the ferrite to form iron carbide.
そのため、磁性体の本来の効果が低減する問題点があっ
た。Therefore, there was a problem that the original effect of the magnetic material was reduced.
本発明は上記の点に鑑み、中心電極および／または端子
電極の中空孔内露出端部に、フェライトから成る磁性体
筒を嵌合、設置し、該磁性体筒を上記露出端部にガラス
封着した構成を具備するものである。In view of the above points, the present invention has been developed by fitting and installing a magnetic cylinder made of ferrite into the exposed end of the center electrode and/or the terminal electrode in the hollow hole, and placing the magnetic cylinder into the exposed end with a glass seal. It has the following configuration.
本発明においては、カーボンを含むガラス質抵抗体から
磁性体筒を離しているため、該磁性体筒のフェライトが
抵抗体のカーボンと反応することがない。In the present invention, since the magnetic cylinder is separated from the glassy resistor containing carbon, the ferrite of the magnetic cylinder does not react with the carbon of the resistor.
従って、本発明によれば、磁性体筒の本来の効果を生か
すことができ、雑防効果の低減を抑制できる。Therefore, according to the present invention, the original effect of the magnetic cylinder can be utilized, and reduction in noise prevention effect can be suppressed.
以下本発明を具体的実施例により詳細に説明する。 The present invention will be explained in detail below using specific examples.
く第１実施例〉
第１図は、本実施例の縦断面図で、アルミナを主体とす
る絶縁碍子１の中空孔１ａ内部で中心電極３と端子電極
２との間に導電性のシールガラス６を介して抵抗体７を
形成し、さらに磁性体筒８を設置したものである。磁性
体筒８は、第２図のごとく絶縁碍子ｌの中空孔１ａ内部
に緊密に挿入できる寸法を有し、また中心電極３の中空
孔内露出端部であるところの中心電極頭部３ａに嵌合し
て設置され、シールガラス６によってその位置が封止、
固着されている。1st Embodiment> FIG. 1 is a longitudinal cross-sectional view of this embodiment, in which a conductive sealing glass is placed between the center electrode 3 and the terminal electrode 2 inside the hollow hole 1a of the insulator 1 mainly made of alumina. 6, a resistor 7 is formed therebetween, and a magnetic cylinder 8 is further installed. As shown in FIG. 2, the magnetic cylinder 8 has a size that allows it to be tightly inserted into the hollow hole 1a of the insulator l, and is attached to the center electrode head 3a, which is the exposed end inside the hollow hole of the center electrode 3. They are fitted and installed, and the position is sealed by the seal glass 6.
It is fixed.
なお、シールガラス６は、ガラス粉５０％、銅粉５０％
からなる混合粉であり、抵抗体７はカーボン０．１〜１
％、Ｓｔ Ｏｚ系ガラス８０％、Ｚｒ ０゜２０％から
なるガラス質抵抗体粉末材料であり、加熱下で加圧して
絶縁碍子ｌの中空孔１ａ内部に形成した後、両電極間に
わたる抵抗値が３〜７にΩの範囲になる様に作製しであ
る。The seal glass 6 is made of 50% glass powder and 50% copper powder.
The resistor 7 is a mixed powder consisting of carbon 0.1 to 1
%, StOz-based glass 80%, Zr 0°20% glassy resistor powder material, and after forming it inside the hollow hole 1a of the insulator 1 by pressurizing it under heat, the resistance value across both electrodes is determined. It is manufactured so that the resistance is in the range of 3 to 7 Ω.
また、磁性体筒８は、Ｎｉ３０％、およびＺｎ７０％よ
りなるＮｉ−Ｚｎ系のフェライト焼結体で構成しである
。The magnetic cylinder 8 is made of a Ni--Zn based ferrite sintered body consisting of 30% Ni and 70% Zn.
従来周知の抵抗成分主体の構成に比較し、さらに磁性体
フェライトを挿入することにより、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
効果に効を奏する。Compared to the conventionally well-known configuration mainly consisting of resistance components, by further inserting magnetic ferrite, an inductance component is particularly added, and the capacitive discharge current during spark discharge of the spark plug can be further reduced, thereby reducing noise radio waves. Effective in preventing disorders.
なお、第３図は本発明により作製したフェライト入り点
火プラグと、従来周知の、フェライトを組合わせない抵
抗体入り点火プラグ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。FIG. 3 compares the characteristics of the noise electric field intensity with respect to frequency between a ferrite-containing spark plug manufactured according to the present invention and a conventionally known resistor-containing spark plug that is not combined with ferrite.
なお、この本発明例および従来例の材料仕様は前述と同
じである。第３図の如く本発明の方が、周波数の高い領
域で高い雑音電波防止効果が得られている。Note that the material specifications of the present invention example and the conventional example are the same as described above. As shown in FIG. 3, the present invention has a higher noise radio wave prevention effect in the high frequency region.
く第２実施例〉
第４図の如く、端子電極入りの中空孔ｌａ内内用出端部
しての脚部２ａに磁性体筒８を嵌着してもよい。この第
２実施例の雑防性能は第３図のごとくである。Second Embodiment> As shown in FIG. 4, a magnetic tube 8 may be fitted onto the leg portion 2a serving as the protruding end portion of the hollow hole la containing the terminal electrode. The noise prevention performance of this second embodiment is as shown in FIG.
く第３実施例〉
電極と磁性体筒との固定構造の実施例として、第５図は
、磁性体筒８の内径にネジ部８ａを設け、一方、中心電
極３の中心電極頭部３ａにネジ部３ｂを設けることで、
両者を結合させたものである。Third Embodiment> As an example of the fixing structure between the electrode and the magnetic cylinder, FIG. By providing the threaded part 3b,
It is a combination of both.
さらに、第６図は前記同様、端子電極２の脚部２ａにネ
ジ部２ｂを設け、磁性体筒８との結合を図ったものであ
る。Further, in FIG. 6, a screw portion 2b is provided on the leg portion 2a of the terminal electrode 2 to connect it to the magnetic cylinder 8, as described above.
く第４実施例〉
磁性体筒８もしくは、電極と結合させた磁性体筒８のガ
ラスシール６による固着性向上を狙いとした実施例とし
て、第７図に磁性体筒８の外周にネジ部８ｂを形成した
もの、第８図に小径部８Ｃを設けたものを示す。Fourth Embodiment> As an example aiming at improving the adhesion of the magnetic tube 8 or the glass seal 6 of the magnetic tube 8 combined with an electrode, as shown in FIG. 8b is formed, and FIG. 8 shows one in which a small diameter portion 8C is provided.
第３、第４実施例の如き例に於いても高い周波数で第１
、第２実施例同様に雑音電界強度が従来周知の抵抗体入
り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。Even in examples such as the third and fourth embodiments, the first
Similarly to the second embodiment, the noise electric field intensity was smaller than that of the conventionally known spark plug containing a resistor, and the effect of preventing noise radio waves was large.
なお、端子電極２および中心電極３の両方に磁性体筒８
を嵌着しても勿論よい。Note that a magnetic tube 8 is provided on both the terminal electrode 2 and the center electrode 3.
Of course, it is also possible to fit it.
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一部破断面図、第３図は本発明の
説明に供する特性図、第４図は本発明の第２実施例を示
す断面図、第５図ｆａ）、ｆｂ）および第６図は本発明
の第３実施例を示す断面図、第７図および第８図は本発
明の第４実施例を示す断面図である。
■・・・絶縁碍子、ｌａ・・・中空孔、２・・・端子電
極。
２ａ・・・脚部、３・・・中心電極、３ａ・・・頭部、
６・・・シールガラス、７・・・抵抗体、８・・・磁性
体筒。FIG. 1 is a sectional view showing a first embodiment of the present invention, FIG. 2 is a partially cutaway sectional view showing the magnetic cylinder of FIG. 1, FIG. The figure is a cross-sectional view showing a second embodiment of the present invention, Figures 5 fa), fb) and Figure 6 are cross-sectional views showing a third embodiment of the present invention, and Figures 7 and 8 are cross-sectional views showing a third embodiment of the present invention. It is a sectional view showing a fourth example. ■...Insulator, la...Hollow hole, 2...Terminal electrode. 2a... Legs, 3... Center electrode, 3a... Head,
6... Seal glass, 7... Resistor, 8... Magnetic tube.
Claims (1)
間に、カーボンを含むガラス質抵抗体粉末材料の充填に
よる抵抗体を形成する抵抗体入りの点火プラグに於いて
、フェライトから成る磁性体筒を前記中心電極もしくは
前記端子電極の少なくとも一方の、中空孔内露出端部に
嵌合し設置し、前記磁性体筒を前記露出端部にガラス封
着して成ることを特徴とする抵抗体入り点火プラグ。(1) In a spark plug containing a resistor, the resistor is formed by filling a glassy resistor powder material containing carbon between the center electrode and the terminal electrode inside the hollow hole of the insulator, and is made of ferrite. A magnetic tube is fitted and installed in an exposed end portion of at least one of the center electrode or the terminal electrode in a hollow hole, and the magnetic tube is sealed with glass to the exposed end portion. Spark plug with resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29649985A JPS62150681A (en) | 1985-12-24 | 1985-12-24 | Ignition plug with resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29649985A JPS62150681A (en) | 1985-12-24 | 1985-12-24 | Ignition plug with resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62150681A true JPS62150681A (en) | 1987-07-04 |
Family
ID=17834341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29649985A Pending JPS62150681A (en) | 1985-12-24 | 1985-12-24 | Ignition plug with resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62150681A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05172735A (en) * | 1991-12-20 | 1993-07-09 | Orion Mach Co Ltd | Structure of environmental testing device |
| WO2015099081A1 (en) | 2013-12-25 | 2015-07-02 | 日本特殊陶業株式会社 | Spark plug |
| US9281662B2 (en) | 2014-05-29 | 2016-03-08 | Ngk Spark Plug Co., Ltd. | Spark plug |
| JP2016062648A (en) * | 2014-09-12 | 2016-04-25 | 日本特殊陶業株式会社 | Insulator and spark plug |
| US9373940B2 (en) | 2014-05-12 | 2016-06-21 | Ngk Spark Plug Co., Ltd. | Spark plug |
| JP5996044B1 (en) * | 2015-06-18 | 2016-09-21 | 日本特殊陶業株式会社 | Spark plug |
| US10090646B2 (en) | 2014-06-24 | 2018-10-02 | Ngk Spark Plug Co., Ltd. | Spark plug |
| US10153622B1 (en) | 2017-06-09 | 2018-12-11 | Ngk Spark Plug Co., Ltd. | Spark plug having the thickness of a magnetic member without excessively narrowing an electrode member |
-
1985
- 1985-12-24 JP JP29649985A patent/JPS62150681A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05172735A (en) * | 1991-12-20 | 1993-07-09 | Orion Mach Co Ltd | Structure of environmental testing device |
| US9595814B2 (en) | 2013-12-25 | 2017-03-14 | Ngk Spark Plug Co., Ltd. | Spark plug |
| WO2015099081A1 (en) | 2013-12-25 | 2015-07-02 | 日本特殊陶業株式会社 | Spark plug |
| WO2015099082A1 (en) | 2013-12-25 | 2015-07-02 | 日本特殊陶業株式会社 | Spark plug |
| CN105849992A (en) * | 2013-12-25 | 2016-08-10 | 日本特殊陶业株式会社 | Spark plug |
| CN105849991A (en) * | 2013-12-25 | 2016-08-10 | 日本特殊陶业株式会社 | Spark plug |
| CN105849991B (en) * | 2013-12-25 | 2017-10-13 | 日本特殊陶业株式会社 | Spark plug |
| CN105849992B (en) * | 2013-12-25 | 2017-10-13 | 日本特殊陶业株式会社 | Spark plug |
| US9590395B2 (en) | 2013-12-25 | 2017-03-07 | Ngk Spark Plug Co., Ltd. | Spark plug |
| US9373940B2 (en) | 2014-05-12 | 2016-06-21 | Ngk Spark Plug Co., Ltd. | Spark plug |
| US9281662B2 (en) | 2014-05-29 | 2016-03-08 | Ngk Spark Plug Co., Ltd. | Spark plug |
| US10090646B2 (en) | 2014-06-24 | 2018-10-02 | Ngk Spark Plug Co., Ltd. | Spark plug |
| JP2016062648A (en) * | 2014-09-12 | 2016-04-25 | 日本特殊陶業株式会社 | Insulator and spark plug |
| JP2017010690A (en) * | 2015-06-18 | 2017-01-12 | 日本特殊陶業株式会社 | Spark plug |
| WO2016203713A1 (en) * | 2015-06-18 | 2016-12-22 | 日本特殊陶業株式会社 | Spark plug |
| CN107636917A (en) * | 2015-06-18 | 2018-01-26 | 日本特殊陶业株式会社 | Spark plug |
| JP5996044B1 (en) * | 2015-06-18 | 2016-09-21 | 日本特殊陶業株式会社 | Spark plug |
| US10153622B1 (en) | 2017-06-09 | 2018-12-11 | Ngk Spark Plug Co., Ltd. | Spark plug having the thickness of a magnetic member without excessively narrowing an electrode member |
| DE102018113348A1 (en) | 2017-06-09 | 2018-12-13 | Ngk Spark Plug Co., Ltd. | SPARK PLUG |
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