KR20070065085A - Holder for sparking plug to ignition - Google Patents

Abstract

A holder for a spark plug is provided to prevent short on a surface of a cylinder block by continuously maintaining connection of a spark plug terminal and a terminal clip and improving coupling force between a protective cap and the spark plug. A holder(10) for a spark plug includes a terminal clip, a protective cap, and an elastic device(30). The terminal clip is connected with a high voltage cable composed of insulation coating wires, and applies power by being coupled with the spark plug. The protective cap covers the terminal clip, and is made of insulating and heat-resisting rubber material. The elastic device(30) is embedded at an end portion of the protective cap, and improves coupling force with the spark plug.

Description

Holder for sparking plug to ignition}

1 is a partially cutaway side view of a holder for a spark plug according to the present invention;

Figure 2 is a cross-sectional view showing an extract of the spark plug coupling.

<Explanation of symbols for the main parts of the drawings>

10; Also for spark plugs.

11; Co-op cable

13; protective cap

30; Elastic means

The present invention relates to a cable for spark plugs, and more particularly, to a holder for a spark plug having an improved structure of a holder coupled with the spark plug.

In general, the ignition device of an internal combustion engine carries a high voltage cable (high tension cord) in which a high voltage of about 10,000 V to 20,000 V or more generated from a transformer (ignition coil) located between an engine and a battery is distributed through a distributor (distributor). As a result, power is supplied to a plurality of spark plugs mounted inside the engine. In this process, a high voltage current is momentarily generated, and an explosion stroke in which the compressed fuel is ignited and combusted is supplied to the inside of the cylinder by the discharged spark to discharge into an evaporated state. Power is generated.

As described above, in general, a gasoline engine for automobiles mainly uses a battery ignition type, and its configuration includes a battery, an ignition switch ignition primary resistance transformer, a distributor high voltage cable, a spark plug, and the like. In such a battery type ignition, when the start switch is inserted, the low voltage current (primary current) of the battery reaches the interrupter contact point in the distributor assembly via the primary coil of the ammeter, the ignition switch, and the ignition coil. At this time, if the interrupter contact is closed, current flows through the contact and the ground. In this state, when the engine rotates and the interrupter contact is opened, the current flowing in the primary coil is cut off, and at the same time, a high voltage (secondary voltage) is induced to the secondary coil of the ignition coil. This high-pressure current enters the rotor of the distributor through the high-voltage cable, and is then distributed to each spark plug through the terminal clips of the connectors formed at both ends of the high-voltage cable. Are mixed and sent to the combustion chamber of the cylinder, where they are combusted by electrical ignition to generate power. Here, the ignition coil is a device that induces ignition spark generation by distributing a high voltage current to an ignition plug mounted on a cylinder of an engine, and is a necessary main component of an engine ignition coil using a battery type ignition method. In addition, a distributor is a device for distributing the high voltage current generated in the ignition coil so as to be discharged at the optimum ignition point through the high voltage cable at the ignition plug installed in each cylinder. It consists of a device (breaker) that interrupts the current and a device (advancement device) that adjusts the ignition timing according to the rotation of the engine.

The high tension cord, which is an insulated coated wire, is made of 10 to 20 tin-plated wires as an iron core, and a core wire not covered with a predetermined length at both ends with a wire coated with thick insulating rubber or silicon around the core. The conductor is coupled to the terminal clip of a high electrical conductivity metal, the outer surface has a holder wrapped with a protective cap made of insulating and heat-resistant rubber material. The terminal clip wrapped by the hobo cap is coupled to the spark plug to supply power.

However, since the holder is made of an insulating and heat-resistant rubber material, the holder has a problem in that a gap between the inner circumferential surface of the protective cap and the outer circumferential surface of the spark plug is generated due to the deterioration of the coupling force with the spark plug. .

This leakage current has a problem of causing misfire of the engine. Alternatively, the holder of the high-voltage cable is separated from the spark plug for inspection, and power cannot be supplied. In particular, due to the crack gap caused by the change of the synthetic resin and rubber protective cap surrounding the terminal clip, high-pressure electricity is discharged, which causes short circuits on the cylinder block surface of the engine, resulting in low engine output or incomplete combustion. There was a serious problem that there is a high risk of vehicle fire caused by the start of the engine is turned off or short circuit.

The present invention is to solve the problems as described above, to increase the coupling force of the spark plug and the protective cap, and prevent the leakage of the secondary high voltage by fundamentally preventing the occurrence of the gap between the outer peripheral surface of the spark plug and the inner peripheral surface of the protective cap. The purpose is to provide a holder for a spark plug that can increase the coupling force with the spark plug.

The spark plug holder of the present invention for achieving the above object is connected to a high-voltage cable made of an insulated wire and connected to the spark plug and a terminal clip for applying power, insulation or heat-resistant by wrapping the terminal clip A protective cap made of a rubber material, and is embedded in the end of the protective cap is characterized in that it has an elastic means for increasing the coupling force with the spark plug.

In the present invention, the elastic means is embedded in the end of the protective cap and the inner support member having an elastic force having an outer support member surrounding the inner support member, and a spring for providing an elastic force to the inner support member against the outer support member do.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The spark plug holder according to the present invention is connected to each of the corresponding input / output terminals of a distributor and a transformer mounted in an engine room of a vehicle and a plurality of spark plug terminals mounted in an engine so as to distribute a high voltage current. One embodiment is shown in FIGS. 1 and 2.

Referring to the drawings, the spark plug holder 10 is connected to the input and output terminals of the distributor and transformer is connected to the high-voltage cable (11) made of an insulation coated wire and coupled with the spark plug terminal clip for applying power ( 12) and, by surrounding the terminal clip 12, a protective cap 20 made of an insulating or heat-resistant member and embedded in the end of the protective cap 20, the elastic means for increasing the coupling force with the spark plug ( 30).

The high-voltage cable 11 is insulated and coated with a set thickness using silicon containing a ferrite magnetic component having a high electromagnetic wave absorption rate on the outer surface of the core conductor formed by uniformly twisting copper wires plated with tin (Su). The epidermal layer is formed.

The terminal clip 12 is the end of the high-voltage cable 11 is removed from the insulating skin, it is connected to the removed end is made of a metal material with high electrical conductivity.

And the protective cap 20 is made of insulation and heat-resistant resin, the terminal clip 11 is wrapped and the lower side is provided with an ignition plug coupling portion 21 is coupled to the spark plug deep in the outer surface of the cylinder block of the engine.

And the coupling portion 21 is embedded in the end of the elastic means 30, the protective cap 20 is provided with an elastic means 30 to increase the coupling force with the spark plug 40, the internal support member 31 having an elastic force External support member 32 surrounding the inner support member 31 and a spring 33 for providing an elastic force to the inner support member 31 with respect to the outer support member (32). Here, the inner and outer support members 31 and 32 may be formed in the shape of an elastic ring having an incision.

The elastic means is not limited to the above-described embodiment, and may be any structure as long as it can increase the coupling force between the protective cap and the spark plug.

The spark plug holder 10 configured as described above is coupled to the spark plug 40 of the engine of the vehicle in order to distribute an appropriate high voltage current. Therefore, the power of the battery mounted on the vehicle is distributed to the transformer, and converts the low voltage into a high voltage current of about 10,000V to 20,000V or more, and at the same time, the generated high voltage is transferred to the distributor. When the input high voltage is supplied to the spark plug 40 of the engine through the plurality of high voltage cables 11, a high voltage discharge spark is generated between the center electrode and the ground electrode of the spark plug 40. The explosive stroke in which the fuel compressed and supplied to the inside of the cylinder is compressed and ignited and combusted by the discharge flame is repeatedly performed continuously to generate power of the engine.

In this process, since the elastic plug is installed in the spark plug coupling portion 21 of the protective cap 20, the coupling force with the spark plug can be increased, and further, a gap is generated between the spark plug and the protective cap 20. The leakage of secondary high pressure is prevented.

As described above, the spark plug holder can maintain the continuous connection between the spark plug terminal and the terminal clip, and can increase the coupling force between the protective cap and the spark plug. Therefore, the short circuit is prevented from occurring due to the leaked high voltage. Can be. In addition, it is possible to fundamentally solve various problems such as a decrease in the output of the engine or incomplete combustion, a start of the engine while the vehicle is running, a fire caused by a short circuit. Therefore, the safety and reliability of the product can be improved.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (2)

A terminal clip for connecting to a high voltage cable made of an insulated coated wire and coupled with a spark plug to apply power, a protective cap made of an insulating or heat resistant rubber material by surrounding the terminal clip, and embedded in an end of the protective cap to ignite. Spark plug holder, characterized in that provided with an elastic means for increasing the coupling force with the plug. The method of claim 1, The elastic means is embedded in the end of the protective cap and the inner support member having an elastic force having an outer support member surrounding the inner support member, characterized in that it comprises a spring for providing an elastic force to the inner support member against the outer support member Holder for spark plugs.

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