JPS60237173A - Noise wave suppressing type distributor - Google Patents

Abstract

PURPOSE:To exhibit superior suppressing effect of noise wave, by providing a distributor rotor constituted of a dielectric and a net-like rotor electrode embedded in the dielectric. CONSTITUTION:A net-like distributor rotor electrode 11 is embedded in a dielectric 10 to eliminate separation of the electrode 11 from the dielectric 10. Therefore, partial discharge between the electrode 11 and the dielectric 10 may be sufficiently effected without being hindered. As a result, discharge voltage and discharge current may be reduced to reduce an electric field strength of noise wave due to spark discharge and sufficiently suppress the noise wave. In this case, the dielectric 10 is made of heat resistant synthetic resin such as silicone resin, epoxy resin and phenol resin, and if required, catalyst, curing agent and solvent may be added. The net-like distributor rotor electrode 11 is made of conductive metal such as stainless steel, brass, aluminium and iron, or carbon fiber.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device for suppressing noise radio waves generated from an ignition system of an internal combustion engine for an automobile, and in particular, to a device for suppressing noise radio waves generated between a distribution electrode and a side terminal electrode. Noise radio wave suppression type power distribution device (hereinafter referred to as power distribution device) for suppressing noise radio waves caused by discharge
Regarding the improvement of

Noise radio waves are suppressed by the noise radio waves caused by spark discharges in automobile electronic control equipment and radio broadcasts.

It is well known that a variety of research and development efforts are being conducted to prevent interference with television broadcasting and other types of wireless communications, and that the number of research and development efforts is likely to increase in the future.

The configuration and functions of the power distributor are shown in FIG.

The distribution element 1 is attached to a center shaft 2, and has a structure in which a center carbon piece 3 and a distribution electrode 4 are brought into contact. Contact pressure is obtained by spring 5. -th order high voltage current is -th order high voltage wiring 6. Through the spring 5 and the center carbon piece 3.

The distribution electrode 4 is charged. The distributor 1 rotates at a speed synchronized with the crankshaft of the engine, and when the side terminal electrode 7 of the distributor cap and the distribution electrode 4 face each other, the voltage between the distribution electrode 4 and the side terminal electrode 7 is A spark discharge occurs by dielectric breakdown of the air in the gap G between the engine and the engine, and a current flows through the secondary high-voltage wiring 8 to the engine's spark plug, supplying a high voltage. Noise radio waves.

This is due to the magnitude of the startup voltage during this spark discharge.

The smaller the value, the smaller the noise radio waves tend to be.

(Prior Art and its Problems) In a conventional power distributor, a gap is provided between the tip of the power distribution electrode and the side terminal electrode of the power distribution camp, and the bottom surface of the power distribution electrode has a thickness of 0.5 mm. A dielectric layer made of a thin mica plate, a ceramic plate, a heat-resistant synthetic resin plate, etc. with a thickness of 3 to 0.5 mm is added to form an electron distribution, and a partial discharge is generated between this dielectric and the distribution electrode. By increasing the discharge voltage and current, the electric field strength of the noise radio waves caused by the spark discharge is reduced, thereby suppressing the noise radio waves.

Conventionally, in a power distributor, the distribution electrode and the dielectric are separated into two layers, and the distribution electrode and the dielectric are pasted together with an adhesive. There is also an electron distribution structure in which the partial discharge between the electron electrode and the dielectric does not occur sufficiently and the noise radio waves are sufficiently suppressed, but in this case as well, the effect of suppressing the noise radio waves is low as described above.

As described above, the current situation is that there is no power distributor that has a sufficient effect of suppressing radio noise.

It is an object of the present invention to eliminate such conventional drawbacks and provide a power distributor having a sufficient effect of suppressing radio noise.

(Structure of the Invention) The present invention includes a distribution element that rotates in conjunction with the rotation of an internal combustion engine, and a plurality of side terminal electrodes provided opposite to the distribution element through a gap. A power distributor in which a high voltage generated from an ignition coil is connected to the side terminal electrode via discharge between the distribution electrode of the distribution element and the side terminal electrode to supply and distribute power to the spark plug, The present invention relates to a power distributor including a power distribution device having a mesh-like power distribution electrode embedded in a dielectric material.

(Function) By embedding a mesh-like electron distribution electrode in a dielectric material, all the drawbacks of the conventional method can be solved.

That is, since the mesh-shaped electron distribution electrode is buried in the dielectric material, there is almost no possibility that the distribution electrode and the dielectric material will separate, and therefore partial discharge between the distribution electrode and the dielectric material is inhibited. You will no longer be exposed to it.

In the present invention, heat-resistant synthetic resins are used as the dielectric material constituting the electron distribution, and silicone resins, epoxy resins, phenol resins, diallyl phthalate resins, polyester resins, etc. are used, and if necessary, catalysts, A hardening agent, a solvent, etc. are added. Further, as the mesh-like distribution electrode, conductive metal such as stainless steel, brass, aluminum, iron, etc., or carbon fiber is used.

Furthermore, in the present invention, in addition to the above-mentioned strength members, cloths that are less susceptible to deterioration due to the heat of spark discharge, such as known and commonly used glass fiber cloth or asbestos cloth, may be mixed at the same time.

The conditions for embedding a mesh-like distribution electrode in a dielectric material vary depending on the resin used.9For example, metal mesh impregnated with a heat-resistant synthetic resin is laminated, and a weight of 50 to 200 kg is used.
It is obtained by heating at a pressure of /cIn2 and a temperature of 140 to 240°C.

(Example) Embodiments of the present invention will be specifically described below with reference to the drawings.

Example 1 Addition polymerization silicone resin to which dicumyl peroxide was added in advance (manufactured by Toshiba Silicone Corporation).

Product name YR-3224H) was added with Doruol and the specific gravity was 1.
Adjusted to 052. Thereafter, a tatami-woven stainless steel mesh (JIS H6102) with a wire diameter of 0.14 mm and a wire diameter of 0.14 mm (JIS H6102), which had been cleaned and degreased with trichlorethylene, was impregnated with the silicone resin whose specific gravity was adjusted to 1.052.
The mixture was heated at 5° C. for 12 minutes to volatilize the solvent and proceed with the reaction of the resin, producing a silicone resin-impregnated stainless steel mesh with a silicone resin adhesion amount of 22% by weight.

Next, 4 of these were laminated and heat pressed at 220°C for 3
0.9 by applying a pressure of 100 kg/cm2 for 5 minutes.
A silicone resin-impregnated stainless steel mesh with a thickness of 6 cylinders is formed, and this is punched out into a predetermined shape and dimension using a mold in the direction shown in Fig. 2. As shown in Fig. 1, a brass mesh is attached to the center carbon piece and the sliding part. Rivets 9 were driven and embedded into a synthetic resin by a conventionally known method to obtain a wire distribution member 1. The power distribution device 1 thus obtained is assembled by a conventionally known method to constitute a power distribution device. In FIG. 1, 3 is a center carbon piece, 7 is a side terminal electrode, 4 is a distribution electrode in FIG. 2, 10 is a silicone resin in FIGS. 1 and 2, and II is a stainless steel mesh.

Example 2 A silicone resin-impregnated stainless steel mesh was produced in the same manner as in Example 1 L*.

10,000 thickness 0.18-〇 plain-woven glass fiber cloth (manufactured by Asahi Siepel Co., Ltd., product name As-350) was impregnated with silicone resin whose specific gravity was adjusted in the same manner as in Example 1, and further resin-impregnated cloth was manufactured. The glass cloth was heated at 135° C. for 12 minutes using an apparatus to volatilize the solvent and proceed with the reaction of the resin, thereby producing a silicone resin-impregnated glass cloth with a silicone resin adhesion amount of 28% by weight.

Next, as shown in FIG. 3, three sheets of silicone resin-impregnated glass cloth 12 and two sheets of silicone resin-impregnated stainless steel mesh 13 were alternately laminated.

Heat press #) at 220℃ for 35 minutes, 100ks/
A pressure of 1.5 cm" was applied to form a 0.92 mm thick silicone resin-impregnated glass fabric/stainless steel mesh.

This was punched out in the same manner as in Example 1, and rivets were driven in, followed by embedding molding in synthetic resin 1 to obtain electron distribution member 1. The power distribution device 1 thus obtained is assembled by a conventionally known method to constitute a power distribution device.

Comparative Example 1 Stainless steel plate with a thickness of 0.6 mm (JIS G 43
05゜5US304) was roughened with a sander, washed with trichlorethylene, and degreased.

Separately, a silicone/resin-impregnated glass cloth was manufactured in the same manner as in Example 2.

Next, four pieces of the silicone resin-impregnated glass cloth were laminated on the roughened and degreased side of the stainless steel plate, and a pressure of 100 kg/cm2 was applied to the stainless steel plate at 220°C for 35 minutes in a heat press. A silicone resin-impregnated glass cloth with a thickness of 0.56 cm was formed and added, and this was punched into a predetermined shape and dimension using a mold, and the stainless steel plate side was made the surface and the silicone resin-impregnated glass cloth side was made the inside. in a way.

Electron distribution was obtained by embedding it in synthetic resin. The power distribution device thus obtained is assembled by a conventionally known method to form a power distribution device.

Next, Example 1. A comparative test of discharge voltage was conducted on the power distributors obtained in Example 2 and Comparative Example 1.

The test results are shown in Table 1.

As is clear from Table 1, the power distributor according to the embodiment of the present invention has a lower discharge voltage than the conventional product. Therefore, it can be seen that this product exhibits a better effect of suppressing noise radio waves than conventional products.

The present invention has a distribution element that rotates in conjunction with the rotation of an internal combustion engine, and a plurality of side terminal electrodes that are provided opposite to the distribution element through a gap, and generates electricity with one ignition coil. In a power distributor in which a high voltage is connected to the side terminal electrode via discharge between the distribution electrode of the distribution element and the side terminal electrode to supply and distribute power to the spark plug, a mesh is formed in the dielectric material. Since the power distribution device is provided with a power distribution electrode embedded therein, it is possible to obtain a power distribution device that exhibits an excellent effect of suppressing noise radio waves.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a distribution electrode used in a power distribution device according to an embodiment of the present invention, and FIG. A plan view showing the punching direction, and FIG. 3 shows a laminated state of silicone resin-impregnated stainless steel and silicone resin-impregnated glass cloth for forming a power distribution device used in a power distribution device according to another embodiment of the present invention. The side view and FIG. 4 are longitudinal sectional views showing the structure of a conventional power distributor. Explanation of symbols 1...Electronic distribution 2...Center shaft 3...Center carbon piece 4...Electronic distribution electrode 5...Spring 6...-Next high voltage wiring 7...Side terminal electrode 8
...Secondary high voltage wiring 9...Brass rivet 10...
Silicone resin 11...Stainless steel mesh 12...Silicone resin-impregnated glass cloth 13...Silicone resin-impregnated stainless steel mesh ￥1m Pole 20 4th wall

Claims (1)

[Claims] 1. It has a distribution element that rotates in conjunction with the rotation of the internal combustion engine, and a plurality of side terminal electrodes provided opposite to the distribution element through a gap. A noise radio wave suppressing type power distributor in which a voltage is connected to the side terminal electrode via a discharge between the distribution electrode of the distribution element and the side terminal electrode to supply and distribute power to the spark plug. A noise radio wave suppression type power distribution device equipped with a distribution device with a mesh-like distribution electrode embedded inside.