CN2254586Y

CN2254586Y - Low-interference high voltage ignition conductor for vehicle

Info

Publication number: CN2254586Y
Application number: CN 95201323
Authority: CN
Inventors: 戴财丁
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-26
Filing date: 1995-01-26
Publication date: 1997-05-21
Anticipated expiration: 2005-01-26

Abstract

The utility model relates to a low-interference high-voltage ignition conductor for a motor vehicle, which is connected between an ignition coil of the motor vehicle and a cigar lighter. The high-voltage ignition conductor for a motor vehicle is a high-voltage coaxial cable; a conductor for high-voltage signal to pass is formed in the center; double layers of copper screens are arranged in the outer layer of the conductor. A canceling circuit for high-voltage clutter is connected in series with the conductor and is composed of a resistor and an inductor element. One end of the cable is connected with the connector of a cigar lighter; a grounding copper bush sounding the periphery of the cigar lighter is arranged in a connector, one end of the grounding copper bush is connected with the copper screens, and the other end is connected with a grounding spring contacted with the grounding end of the cigar lighter. The utility model solves the question that previous ignition conductors of a motor vehicle are easy to generate the signal of electromagnetic interference.

Description

The low high-voltage ignition for automobile lead that disturbs

The utility model relates to a kind of low interference high-voltage ignition for automobile lead, be mainly a kind of high-tension ignition lead that is used in the cigar lighter of vehicle, it adopts high-pressure coaxial cable line and collocation to have the high pressure noise to eliminate circuit, constitutes a kind of can effectively eliminate the noise of lighting a fire in the harness of disturbing.

Use the various vehicles of engine now as power, all the high voltage that need produce by ignition coil (high-tension coil) is so that be positioned at the cigar lighter igniting of engine position, so that engine runs well, but on using, reality promptly produces some interference problems in these high-tension ignition modes, that is under automobile high pressure (about 20,000 volts) and cigar lighter generation electrical discharge arc state, promptly produce so-called High-frequency Interference (noise), be necessary to be improved.

The purpose of this utility model is to provide a kind of high-tension ignition lead that can effectively reduce harness and cigar lighter sparkover interference, mainly be that its conductor part adopts the high-pressure coaxial cable line with ground connection copper mesh, its ground connection copper mesh that is positioned at the high-voltage conducting wires periphery is to eliminate high-voltage line effectively to extraradial electromagnetic wave with mat, to solve the problem that electric wave is disturbed in outside radiation, and the high-pressure section at this cable is serially connected with one with R, the high pressure noise signals that the L networking constitutes is eliminated circuit, reach and more effectively suppress the high pressure interference signal, to form a kind of high-tension ignition lead of low interference.

Low interference high-voltage ignition for automobile lead of the present utility model is connected between ignition coil and the cigar lighter, it is characterized in that, comprising:

One high-pressure coaxial cable line, its central authorities are formed with the lead that passes through for the igniting high voltage signal, peripheral one deck copper mesh that coats, the nearly outer copper mesh that forms one deck for ground connection;

One high pressure noise is eliminated circuit, and it is serially connected on the high-pressure coaxial cable, and by a high resistance measurement and an inductance coil parallel connection, the low resistance resistance of connecting is again formed.

The resistance value of described high-impedance resistors is about 50K Ω.

The impedance of described Low ESR resistance is about 1K Ω.

One end of described high-pressure coaxial cable line connects the cigar lighter joint, this joint inside is provided with a ground connection copper sheathing that is centered around the cigar lighter periphery, ground connection copper sheathing bottom connects one can divide the ground spring that contacts with cigar lighter earth terminal or cylinder metal part, and the upper end one ground connection conversion terminal of ground connection copper sheathing is connected with the ground connection copper mesh of described high-pressure coaxial cable line.

Described high pressure noise eliminate circuit be located at two ends respectively with hollow conducting sleeve that the ground connection copper mesh of high-pressure coaxial cable line is connected in, described inductance coil is enclosed within on the described high-impedance resistors.

Outer socket one insulating sleeve in the space at described inductance coil and high resistance and low resistance place, the curable liquid withstand voltage insulating cement of filling between insulating sleeve and conductive tube.

Described insulating sleeve can be made by withstand voltage silica gel material.

The utlity model has following effect:

Because high-tension ignition lead of the present utility model adopts the high-pressure coaxial cable line, wherein be connected to the high pressure noise and eliminate circuit, so it has the effect of avoiding the outside radiated electromagnetic wave of high-tension ignition lead, to reduce the interference that causes of automobile to electrical equipment.

Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows feature of the present utility model:

Description of drawings:

Fig. 1: schematic perspective view of the present utility model.

Fig. 2: the exploded view of cigar lighter blank area of the present utility model.

Fig. 3: combination section of the present utility model.

Fig. 4: circuit diagram of the present utility model.

Fig. 5: ignition wave form schematic diagram of the present utility model.

Fig. 6 (A～C): electric current flow schematic diagram of the present utility model.

As shown in Figure 1, high-tension ignition lead of the present utility model is that a kind of two ends are formed with cigar lighter joint 80 that is connected to cigar lighter respectively and the distributor cap joint 100 that is connected to the vehicle distributor cap respectively, and at two joints 80,100 are connected mutually with a high-pressure coaxial cable line 10 and are integral, the structure of high-pressure coaxial cable line 10, can cooperate referring to shown in the profile of Fig. 3, be that a center is formed with high-pressure conductor 11, and peripheral copper mesh 12 with a suitable thickness, and constitute coated with insulation sheath outside reaching coated with another layer ground connection copper mesh 13 again, so that the high-tension electricity of high-pressure conductor 11 inside that circulates in high-pressure coaxial cable line 10 is to the double-deck copper mesh 12 of extraradial electromagnetic wave by the periphery, 13 are absorbed, reach and prevent that outside radiated electromagnetic wave is to eliminate the purpose of disturbing, and more be connected with high pressure noise elimination circuit 90 at the middle section position of this high-pressure coaxial cable line 10, this circuit 90 can be for outside the conducting sleeve 91 that connects both sides ground connection copper mesh 13 for being formed with in the periphery, its inner hollow position is respectively arranged with the connection spring 93 that is connected with high-pressure conductor 11 in both sides, 94, and at two

springs

93,94 inboard is abutted against the resistance 70 of different resistances respectively, 30 (resistance 70 is 1K Ω, be inserted with a conducting strip 92 two

resistance

70 and 30 then, to form series loop, and be sheathed with an inductance coil 20 in the periphery of its another resistance 30, inductance coil 20 two ends constitute a kind of high pressure noise that suppresses interference signal and eliminate circuit 90 for to be connected in parallel with resistance 30.The figure right side of face behind this circuit 20 and high-impedance resistors 30 parallel circuitss, is transported to cigar lighter joint 80 through igniting high-voltage signal that distributor cap joint 100 is sent into again.

As shown in Figure 2, it is the exploded view of cigar lighter blank area; Cigar lighter joint 80 comprises that one is inverted L shape ground connection signal conversion terminal 81, ceramics insulator 82, contact terminal 83, copper sheathing 84 and ground spring 85, can cooperate Fig. 1, shown in 3, one end clamping of inverted L shape ground connection conversion terminal 81 is on the ground connection copper mesh 13 of high-pressure coaxial cable line 10, and its vertical component effect is linked on the ceramics insulator 82, its lower end clamping is in the upper end 841 of copper sheathing 84, so that copper sheathing 84 can be connected state with high-pressure coaxial cable line 10 through this ground connection conversion terminal 81, and electrode terminal 83 upwards passes ceramics insulator 82 to combine with high-pressure conductor 11 by copper sheathing 84 bottoms, the lower end of this electrode terminal 83 is formed with for the contact electrode 831 that contacts with the cigar lighter electrode, being positioned at, the ground spring 85 of below is combined in copper sheathing 84 lower positions and is the contact conduction state mutually, so can be after cigar lighter joint 80 and cigar lighter socket, the electrode on cigar lighter top is contacted with contact electrode 831, and ground spring 85 can contact with the grounding electrode of cigar lighter or the metal part branch of engine, ground connection effect by ground spring 85 promptly makes copper sheathing 84 simultaneously, the copper mesh 13 of conversion terminal 81 and high-pressure coaxial cable line 10 presents equipotential and is in ground state.

Therefore, by previous constructions as can be known, but promptly constitute a kind of isolation copper mesh 13 that circulates in the high-tension electricity mat high-pressure coaxial cable line 10 in the conductor that makes a ground connection effect to extraradial high frequency noise is provided, reaching the noise that reduces in the high-voltage transmission leaks, and the high pressure noise that is located in the high-pressure coaxial cable line 10 is eliminated circuit 90, in order to the noise signal that suppresses itself to produce.

As shown in Figure 3, for avoiding in inductance coil 20 and

resistance

30,70 formed spaces, because of high-tension current input may cause arcing phenomenon between contact, can be at this space skin socket one insulating sleeve 95, insulating sleeve 95 can be made by withstand voltage insulating material such as silica gel, but between insulating sleeve 95 and conducting sleeve 91 then filling with withstand voltage insulation of liquid state such as silica gel 96, can cooperate aforementioned dielectric sleeve pipe 95 to form an overcoat after waiting to solidify, leak to avoid the issuable electromagnetic wave of arcing phenomenon.

High-tension ignition lead of the present utility model, can replace by distributor cap to the existing high-voltage conducting wires between each cigar lighter, the configuration relation of itself and vehicle circuit as shown in Figure 4, being presented at each cigar lighter 60 and distributor cap 50 each contact (then represents with aforementioned equivalent electric circuit of the present utility model between A～D), that is high-tension ignition lead of the present utility model is one with inductance coil 20 high-impedance resistors 30 that is connected in parallel, and then the Low ESR resistance 70 that is connected in series is formed, the HT waveform that each cigar lighter position records as shown in Figure 5, time T 1 is the state of expression " when not lighting a fire ", and T2 represents " charge cycle ", T3 represents " igniting effective period ", T4 represents " finishing to postpone ", between the charge period of T2, be as shown in Figure 6A, when sending into high-voltage pulse, inductance coil 20 presents high impedance, so only pass through through resistance 30, and behind the T2 end cycle, during entering T3, be that inductance coil 20 changes Low ESR (impedance is similar to 0 Ω) into, so the electric current type of flow promptly changes into shown in Fig. 6 B, make main initial firing current directly through

inductance coil

20 and 70 circulations of Low ESR resistance, so that being provided, the igniting discharge uses, and when the high pressure of input disappears (stopping igniting), as the T4 cycle of Fig. 5, make electric charge 30 discharges of the resistance through being connected in parallel in the opposite direction that store in the inductance coil 20, so that residual electric charge full consumption is fallen, form the discharge waveform of Fig. 5 as described above according to this, by the discharge waveform of Fig. 5 as can be known, parallel circuits with high-impedance resistors in the foregoing circuit 30 and inductance coil 20, can be when producing the disappearance of instantaneous pressure and high pressure, can reach the rising edge and the falling edge that make HT waveform and change level and smooth shape into, also can reach the high frequency spectrum energy that suppresses rising edge and falling edge zone, other is serially connected in the Low ESR resistance 70 on the loop, it is that an inhibition moment sudden change waveform reaches the current limliting to jamming incoherent signal, to suppress the high-frequency impulse that each several part produces.

Eliminate circuit 90 with high pressure noise of the present utility model and can suitably suppress high-frequency signal energy and pass through the outer field isolation copper mesh of electric wire, form a low high-voltage ignition for automobile lead that disturbs to absorb to extraradial frequency electromagnetic waves.

Claims

1, a kind of low interference high-voltage ignition for automobile lead is connected between ignition coil and the cigar lighter, it is characterized in that, comprising:

2, low interference high-voltage ignition for automobile lead according to claim 1 is characterized in that the resistance value of described high-impedance resistors is 50K Ω.

3, low interference high-voltage ignition for automobile lead according to claim 1 is characterized in that the impedance of described Low ESR resistance is 1K Ω.

4, low interference high-voltage ignition for automobile lead according to claim 1, it is characterized in that, one end of described high-pressure coaxial cable line connects the cigar lighter joint, this joint inside is provided with a ground connection copper sheathing that is centered around the cigar lighter periphery, ground connection copper sheathing bottom connects one can divide the ground spring that contacts with cigar lighter earth terminal or cylinder metal part, and the upper end one ground connection conversion terminal of ground connection copper sheathing is connected with the ground connection copper mesh of described high-pressure coaxial cable line.

5, low interference high-voltage ignition for automobile lead according to claim 1, it is characterized in that, described high pressure noise eliminate circuit be located at two ends respectively with hollow conducting sleeve that the ground connection copper mesh of high-pressure coaxial cable line is connected in, described inductance coil is enclosed within on the described high-impedance resistors.

6, low interference high-voltage ignition for automobile lead according to claim 1, it is characterized in that, outer socket one insulating sleeve in the space at described inductance coil and high resistance and low resistance place, the curable liquid withstand voltage insulating cement of filling between insulating sleeve and conductive tube.

7, low interference high-voltage ignition for automobile lead according to claim 6 is characterized in that described insulating sleeve is made by withstand voltage silica gel material.