JPH0430382Y2 - - Google Patents

Info

Publication number
JPH0430382Y2
JPH0430382Y2 JP1983179684U JP17968483U JPH0430382Y2 JP H0430382 Y2 JPH0430382 Y2 JP H0430382Y2 JP 1983179684 U JP1983179684 U JP 1983179684U JP 17968483 U JP17968483 U JP 17968483U JP H0430382 Y2 JPH0430382 Y2 JP H0430382Y2
Authority
JP
Japan
Prior art keywords
rotor
sectional area
electrode
rotor electrode
cross
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
Application number
JP1983179684U
Other languages
Japanese (ja)
Other versions
JPS6087372U (en
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 filed Critical
Priority to JP17968483U priority Critical patent/JPS6087372U/en
Publication of JPS6087372U publication Critical patent/JPS6087372U/en
Application granted granted Critical
Publication of JPH0430382Y2 publication Critical patent/JPH0430382Y2/ja
Granted legal-status Critical Current

Links

Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は内燃機関の点火装置から発生する雑音
電波を抑止することを目的として使用される点火
配電器を構成するロータの電極の材質がセラミツ
クの場合のロータ電極の形状に関するものであ
る。
[Detailed description of the invention] (Field of industrial application) The present invention is based on the invention in which the material of the electrodes of the rotor constituting the ignition power distributor used for the purpose of suppressing noise radio waves generated from the ignition device of an internal combustion engine is ceramic. This relates to the shape of the rotor electrode in the case of .

(従来技術) 最近、点火装置から発生する雑音電波を抑止す
るために、ロータ電極にフエライト、炭化珪素等
のセラミツク材質を焼結したものを使用するもの
が多数考えられている。その中でも抵抗値を限定
しているものも多くある。
(Prior Art) Recently, in order to suppress noise radio waves generated from ignition devices, many devices have been considered that use sintered ceramic materials such as ferrite and silicon carbide for rotor electrodes. Among them, many have limited resistance values.

しかし、このセラミツクロータ電極は断面積に
大きな変化のある形状を持つていると、断面積の
狭い所では抵抗値が増し、断面積の広い所では抵
抗値は減少してしまい、所定の抵抗値を維持でき
なくなり、必要な抵抗値を得ることができなくな
る。
However, if this ceramic rotor electrode has a shape with a large change in cross-sectional area, the resistance value will increase where the cross-sectional area is narrow, and the resistance value will decrease where the cross-sectional area is wide. will not be able to maintain the required resistance value.

ところが、従来周知のものでは、ロータ電極を
絶縁樹脂製のロータ本体に固定するため、実開昭
53−152027号公報に記載されるごとく、ロータ電
極に数個の貫通穴を設け、この貫通穴に、ロータ
本体に形成した突起部を係合し、この突起部の先
端を押しつぶす構造となしてある。
However, in the conventional well-known method, the rotor electrodes are fixed to the rotor body made of insulating resin.
As described in Publication No. 53-152027, several through holes are provided in the rotor electrode, and a protrusion formed on the rotor body is engaged with the through hole to crush the tip of the protrusion. be.

従つて、このようなロータ電極形状のものをセ
ラミツクで形成すると、貫通穴の近辺と他の部分
とで断面積が大きく変化してしまい、最大断面積
と最小断面積との比が5:1程度になので、要求
抵抗値を得ることができないという欠点がある。
Therefore, if such a rotor electrode shape is made of ceramic, the cross-sectional area will change greatly between the vicinity of the through hole and other parts, and the ratio of the maximum cross-sectional area to the minimum cross-sectional area will be 5:1. The disadvantage is that it is not possible to obtain the required resistance value.

(考案の目的) そこで、本考案は上記の欠点を解消するため、
ロータ電極の断面積に大きな変化をなくし、所定
の抵抗値を容易に得ることのできるセラミツクロ
ータ電極を提供することを目的とする。
(Purpose of the invention) Therefore, in order to eliminate the above drawbacks, the present invention
It is an object of the present invention to provide a ceramic rotor electrode that can easily obtain a predetermined resistance value by eliminating large changes in the cross-sectional area of the rotor electrode.

(実施例) 以下本考案を図に示す実施例について説明す
る。第1図および第2図において、1は高電気絶
縁樹脂製のロータ本体、2はロータ本体1に埋め
込み固定したロータ電極で、雑音電波抑止のた
め、例えばフエライトよなりるセラミツク材に酸
化鉛を混入しててる導電性セラミツクより形成さ
れ、その抵抗値は数KΩ/cm3のものが用いてあ
る。そして、ロータ電極2の横断面形状は第2図
dに示すごとく、平たい四角形に形成され、その
上部両角部に所定角度(10°〜70°の範囲が好まし
い)の傾斜切欠部2aを有している。この切欠部
2aはロータ電極2の幅を6mmとすると1mm〜
2.5mmの幅で形成されている。そして、このロー
タ電極2の中心電極接触部(第2図a図示のA−
A線)から先端までは第2図a〜dに示すごとく
略同一幅の長方形板状に形成され、その間の最小
断面積(第2図b)と最大断面積(第2図d)と
の比は1:1.2程度となしてある。また、切欠部
2aにはロータ本体1の絶縁樹脂がまわり込んで
いて、ロータ電極2のロータ本体1に対する固定
が強固になされている。
(Example) An example of the present invention shown in the drawings will be described below. In Figures 1 and 2, 1 is a rotor body made of highly electrically insulating resin, and 2 is a rotor electrode embedded and fixed in the rotor body 1. In order to suppress radio noise, lead oxide is applied to a ceramic material such as ferrite. It is made of conductive ceramic with a resistance value of several KΩ/cm 3 . The cross-sectional shape of the rotor electrode 2 is formed into a flat rectangular shape as shown in FIG. ing. If the width of the rotor electrode 2 is 6 mm, this notch 2a is 1 mm or more.
It is formed with a width of 2.5mm. Then, the center electrode contact portion of this rotor electrode 2 (A-
As shown in Figure 2 a to d, the area from line A to the tip is formed into a rectangular plate shape with approximately the same width, and the minimum cross-sectional area (Figure 2 b) and maximum cross-sectional area (Figure 2 d) The ratio is about 1:1.2. Furthermore, the insulating resin of the rotor body 1 wraps around the notch 2a, so that the rotor electrode 2 is firmly fixed to the rotor body 1.

上記構成において、ロータ電極2の上部両角部
に傾斜切欠部2aを形成して、ロータ電極2をロ
ータ本体1に埋込み固定することにより、ロータ
電極2の最大断面積と最小断面積との比を1.2:
1程度とすることができた。
In the above configuration, the ratio between the maximum cross-sectional area and the minimum cross-sectional area of the rotor electrode 2 can be adjusted by forming the inclined notches 2a at both upper corners of the rotor electrode 2 and embedding and fixing the rotor electrode 2 in the rotor body 1. 1.2:
I was able to make it about 1.

ここで、ロータ電極2の最大断面積と最小断面
積との比と、ロータ電極2の総合抵抗値(中心電
極接触部から先端までの抵抗値)との関係は、最
小断面積を同一の値とすると、第3図のような特
性となる。
Here, the relationship between the ratio of the maximum cross-sectional area and the minimum cross-sectional area of the rotor electrode 2 and the total resistance value of the rotor electrode 2 (resistance value from the center electrode contact part to the tip) is that the minimum cross-sectional area is the same value. If so, the characteristics will be as shown in FIG.

従つて、本実施例のごとく、ロータ電極2の最
大断面積と最小断面積との比が1.2:1のものは
要求抵抗値をほぼ満足できる。
Therefore, when the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the rotor electrode 2 is 1.2:1 as in this embodiment, the required resistance value can be almost satisfied.

ここで、断面積の変化による総合抵抗値の要求
抵抗値からのずれを、ロータ電極2の材料の成
分、組成等を調整することにより、取り戻すこと
ができるのは、最大断面積:最小断面積の比が
2:1程度が限度であり、上記切欠部2aの形状
(傾斜角および幅)は上記比の範囲内において自
由に設定でき、総合抵抗値の操作も容易であり、
また、セラミツクロータ電極2の成形も容易であ
る。
Here, by adjusting the ingredients, composition, etc. of the material of the rotor electrode 2, the deviation of the total resistance value from the required resistance value due to a change in the cross-sectional area can be recovered. The ratio is limited to about 2:1, the shape (inclination angle and width) of the notch 2a can be freely set within the range of the above ratio, and the overall resistance value can be easily manipulated.
Furthermore, molding of the ceramic rotor electrode 2 is also easy.

(考案の効果) 以上述べたように本考案においては、横断面四
角形で略同一幅の長方形板状に形成され導電材を
混入したセラミツク製のロータ電極の上部角部に
所定の角度の傾斜切欠部を形成し、この傾斜切欠
部にロータ本体の絶縁樹脂をまわり込ませてロー
タ電極をロータ本体に埋め込み固定したから、ロ
ータ電極の最大断面積と最小断面積との比を1:
1に近づけることができて、所定の抵抗値を容易
に得ることができるのみならず、ロータ電極の角
部の傾斜切欠部にロータ本体の絶縁樹脂を回り込
ませるのみでロータ電極をロータ本体に強固に固
定することができるため、所定の抵抗をもつセラ
ミツク製のロータ電極が発熱してもその放熱が充
分にできるという優れた効果がある。
(Effects of the invention) As described above, in the present invention, an inclined notch at a predetermined angle is formed in the upper corner of the rotor electrode, which is formed into a rectangular plate shape with a square cross section and approximately the same width, and is made of ceramic mixed with a conductive material. The insulating resin of the rotor body was wrapped around this inclined notch, and the rotor electrodes were embedded and fixed in the rotor body. Therefore, the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the rotor electrodes was set to 1:
1, which not only makes it easy to obtain a predetermined resistance value, but also allows the rotor electrode to be firmly attached to the rotor body simply by wrapping the insulating resin of the rotor body into the slanted notch at the corner of the rotor electrode. Therefore, even if the ceramic rotor electrode having a predetermined resistance generates heat, the heat can be sufficiently dissipated, which is an excellent effect.

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

第1図a,bは本考案ロータの一実施例を示す
平面図および縦断面図、第2図aは上記実施例に
おけるロータ電極の一実施例を示す平面図、第2
図b,c,dはそれぞれ第2図a図示のA−A
線,B−B線およびC−C線に沿う横断面図、第
3図は上記実施例の作用説明に供する抵抗値特性
図である。 1……ロータ本体、2……ロータ電極、2a…
…傾斜切欠部。
1A and 1B are a plan view and a vertical sectional view showing one embodiment of the rotor of the present invention, FIG. 2A is a plan view showing an embodiment of the rotor electrode in the above embodiment, and FIG.
Figures b, c, and d are A-A shown in Figure 2 a, respectively.
FIG. 3 is a cross-sectional view taken along lines B--B and C--C, and FIG. 3 is a resistance value characteristic diagram for explaining the operation of the above embodiment. 1... Rotor body, 2... Rotor electrode, 2a...
...Slanted notch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 絶縁樹脂製のロータ本体に導電体を混入したセ
ラミツク製のロータ電極を埋め込み固定してなる
電波雑音防止点火配電器のロータにおいて、前記
ロータ電極は横断面四角形で略同一幅の長方形板
状に形成され、その上部角部に所定の角度の傾斜
切欠部を有し、この傾斜切欠部に前記ロータ本体
の絶縁樹脂がまわり込んでなる電波雑音防止用点
火配電器のロータ。
In a rotor for a radio noise prevention ignition power distribution device in which a rotor electrode made of ceramic mixed with a conductor is embedded and fixed in a rotor body made of insulating resin, the rotor electrode is formed into a rectangular plate shape with a square cross section and approximately the same width. A rotor for an ignition power distribution device for preventing radio noise, the rotor having an inclined notch at a predetermined angle at an upper corner thereof, and an insulating resin of the rotor body wrapped around the inclined notch.
JP17968483U 1983-11-21 1983-11-21 Ignition distributor rotor for preventing radio noise Granted JPS6087372U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17968483U JPS6087372U (en) 1983-11-21 1983-11-21 Ignition distributor rotor for preventing radio noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17968483U JPS6087372U (en) 1983-11-21 1983-11-21 Ignition distributor rotor for preventing radio noise

Publications (2)

Publication Number Publication Date
JPS6087372U JPS6087372U (en) 1985-06-15
JPH0430382Y2 true JPH0430382Y2 (en) 1992-07-22

Family

ID=30389802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17968483U Granted JPS6087372U (en) 1983-11-21 1983-11-21 Ignition distributor rotor for preventing radio noise

Country Status (1)

Country Link
JP (1) JPS6087372U (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5366542U (en) * 1976-11-06 1978-06-05

Also Published As

Publication number Publication date
JPS6087372U (en) 1985-06-15

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