DE8034812U1 - CANDLE PLUG FOR CONNECTING SPARK PLUGS TO COMBUSTION ENGINES WITH IGNITION VOLTAGE CABLES - Google Patents

Description

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Spark plug connector for connecting spark plugs on combustion engines with ignition voltage supply cables

The innovation relates to a spark plug connector for connecting spark plugs on internal combustion engines to ignition voltage supply cables with the features of the preamble of claim 1.

Such spark plug connectors usually consist of an insulating housing, which is either from a metallic or for radio interference suppression by a resistor pin made of carbon or wire winding is penetrated as a conductor, which is on the spark plug side The end of the plug connector emerges in a recess as a connecting sleeve from this. At the At the end of the plug connector on the cable side, the conductor acts as a connection element for connection to the ignition voltage supply cable usually in the form of a threaded pin similar to wood or sheet metal screws.

The connection between the spark plug connector and the connecting element of the spark plug is established in that the

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The connecting sleeve is pushed over the connecting element of the candle and one or more with a spring catch engages behind radial projections on the connecting element of the candle. This creates a tight fit between Candle holder and candle guaranteed. However, there are a number of types of candles on the market whose Connection elements differ greatly in shape and diameter. For example, have known connection elements the shape of a spherical nipple (SAE standard) or a metric threaded rod (DIN standard). This means that, for example, the connecting sleeve of a spark plug connector according to the SAE standard does not fit onto the threaded rod fits a candle according to DIN standards and therefore a tight fit between the candle and the plug connector is not guaranteed.

Also when connecting the ignition voltage supply cables and the spark plug connector, difficulties often arise because the ignition voltage cables are also different here Assembly are on the market. There are, for example, ignition cables that do not have any connecting element be connected to the spark plug connector in that the wood screw-like mandrel is screwed into the copper core of the ignition cable. This is particularly because of the soft texture of metallic copper possible. In addition, ignition voltage

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power supply cables in the trade, with a clamp fitting are provided, the nipple-like connections of plug sockets also known in the manner of a sleeve overlaps. Should an ignition voltage supply cable provided with such a fitting be included be connected to a spark plug connector with a wood screw-like mandrel - the cable must be cut off, so that it can no longer be used for plugs with nipples.

The innovation is based on the task of creating a plug connector with which candles with different Connection elements on ignition voltage supply cables of different assemblies in a simple manner Way can be customized. This object is achieved by the features of claim 1.

The innovation makes it possible in particular to use Connect cables with and without clamp fittings to the various spark plug types in just a few simple steps. For example, if you have a cable with clamp fitting with a fciner spark plug with a nipple-like connection element connect, the screw-in nipple is screwed onto the screw-in mandrel and the push-in nipple is removed the connecting sleeve removed. The clamp fitting of the

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bels can now be accessed on the cable side with one hand movement The end of the screw-in nipple can be attached and the spark plug connector latches onto the connector element of the candle will.

IiSoIl a cable without clamp fitting on such a cable If the candle is to be connected, all that is needed is the screw-in nipple from the end of the plug connector on the cable side to be removed.

Shall cables of both types of assembly with candles are connected, the connection element not nipple-like but in the manner of a threaded rod with a M4 thread is formed, the plug-in nipple can be attached to the connecting element of the Candle to be screwed and then press fit in the connecting sleeve of the spark plug connector can be inserted. So there are all common types of candles with all common cable types can be connected. As the thickest connecting elements of the common spark plugs as a rule a little less than 6.5 mm in diameter, it is advantageous if the inner diameter of the connecting sleeve is essentially 6.5 mm. Smaller diameters of connection elements can either through the Spring catch, which can serve as a radial compensation element, or which can be compensated by the push-in nipple

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the (claim 2).

The characteristic of claim 3 is a tight fit of the screw-in nipple on the plug connector or the Plug-in nipple on the spark plug guaranteed, as the surface pressure due to the small contact surface between the nipples and the spark plug connector or the candle is greatly increased. Will the nipple be on a candle or a candle socket For example, screwed on with pliers, it can also be achieved that the blade-shaped Press the contact surfaces a little into their mating surfaces, which ensures a particularly tight fit which cannot be resolved even by strong engine vibrations.

Due to the characteristic of claim 4, the cable can be plugged onto the screw-in nipple in a particularly convenient manner

The characteristic of claim 5 ensures that the insulation material or shielding plate existing outer sleeve still completely surrounds the upper part of the candle and dirt and moisture from this prevents.

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A simplification of the plug socket is achieved by that the screw-in nipple and the plug-in nipple are designed as an elongated universal nipple, the ends of which are both shaped like nipples. In the first end of the universal nipple is the "wood screw-like" Internal thread "and arranged in the second end the M4 internal thread. In particular, storage and assembly simplified.

The innovation is based on two exemplary embodiments in the drawing explained in more detail. Show it:

Fig. 1 shows a spark plug connector with separate screw-in

and push-in nipples,
2 shows a universal nipple according to claim 6.

The spark plug connector shown in FIG. 1 essentially consists of a plug housing 1, a plug-in nipple Z on the plug side and a screw-in nipple 3 on the cable side.

At its end 4 on the candle side, the plug connector has a housing recess that is open in the plug-on direction 5 6, in which a metallic connecting sleeve 7 is arranged. Reaches over in the assembly position

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the plug-side housing edge 8 is the plug-side end of a spark plug, not shown. The interior |

diameter 9 of the connecting sleeve 7 is preferably j

j 6.5 mm. The connecting sleeve 7 is provided with a radial \

direction 10 effective spring catch 11 provided, which is a \

in the sleeve 7 axially inserted connecting element |

a spark plug in a radial press fit. \

The plug-in nipple 2 is in the area of its insertion £

des 12 provided with a radial thickening 13,!

by means of which a circumferential groove 15 lying between the thickening 13 and the screwing-on 14 is formed. \ The diameter of the thickening 13 corresponds essentially to | lent the inner diameter 9 of the connecting sleeve 7. In the ί clamping position, the spring catch 11 engages behind the thickening 13 and lies in the circumferential groove 15. For mounting on a connector element of a spark plug designed as an M-4 threaded pin, the plug-in nipple 2 also has a central M-4 internal thread 16 which runs in the axial plug-in direction 5 and is cut into a through-hole 17. \

I At the end 18 of the plug connector on the cable side there is a \

axial screw-in direction 5 arranged screw-in \ mandrel 19, the tip 20 of which is conical!

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the thickening 24 of the screw-in nipple 3 fits, so the screw-in nipple 3 has screwed onto the screw-in mandrel 19 to be and then the cable 29 with

and the circumferential with a thread 21 in the manner of a self-tapping screw, e.g. a self-tapping screw or Wood screw is provided. The screw-in mandrel 19 is similar to the connecting sleeve 7 in an axial direction open further housing recess 22 attached.

The screw-in mandrel 19 and the connecting sleeve 7 are in an active electrical connection, possibly via a resistor.

The push-on end 23 of the screw-in nipple 3 corresponds to the push-in end 12 of the push-in nipple 2 equipped with a thickening 24 and a circumferential groove 25 located somewhat further in the middle. At its screw-in end 26 a blind hole 27 with a slight conicity is made, in which a "wood internal thread" 28 is cut, which fits onto the thread 21 of the screw-in mandrel 19.

If ignition voltage supply cables are to be used in the manner of the 29 designated cable are connected, which have a clamping fitting 30, which in a press fit over

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the clamping fitting 30 practice the push-on end 23 of the screw-in nipple 3 to be pushed.

To assemble cables 31 without clamp fitting, the Screw-in mandrel 19 can be drilled into the relatively soft copper core 32 while rotating the plug connector.

The screw-in end 14 of the plug-in nipple 2 and the screw-in end 26 of the screw-in nipple 3 each have a blade-shaped contact surfaces 33, 34 which run concentrically to the threads 16 and 28, respectively.

In the exemplary embodiment shown in FIG the plug-in nipple 2 and the screw-in nipple 3 combined to form a universal nipple 35, which both screwed onto the screw-in mandrel 19 with its internal wooden thread 37 located in its first end 36 can be (connection B), in which case its second end 38 to produce the clamping connection A is to be used.

If the universal nipple 35 is used on the candle-side end 4 of the plug connector 1, it will be with his first end 36 pushed into the connecting sleeve 7 and clamped and with the one in its second end 38

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cut M4 internal thread 39 with an M-4 thread de formed connecting element of a spark plug screwed.

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Claims (6)

> i1lt · · · · Ι · · J) I «fffl · · ·· · 1 i I · FACET s.r.l., 1-10096 Leumann (Italy) Claims ■ 1. Spark plug connector for connecting spark plugs to combustion engines with ignition voltage supply cables, with 1. a connector housing (1) made of insulating material, 1.1 from its candle-side end (4) is provided with a spring catch (11) that acts radially metallic connecting sleeve (7) and 1.2 from its cable-side end (18) one with the connecting sleeve (7) electrically connected Screw-in mandrel (19) protrudes, 1.2.1 whose cable-side end is pointed (tip 20) and 1.2.2 its circumference with a thread (21) in the manner of a self-tapping Screw (e.g. sheet metal or wood screw) is provided. 111) 11 · * »<* < * 111 ft * * * 4 I)) ■ P · · · I ) ι Il P ·····! lit ■ ■ * P * * it j) in mi tr * « f - 2 - Mark 2. In the connecting sleeve (7) there is a plug-in nipple with a locking seat locking in the axial direction (2) inserted, 2.1 whose insertion end (12) is provided with a spherical thickening (13) and I 2.2 in its screw-on end (14) a centrally f \ and axially running M4 internal thread (16) I is introduced. i'i 3. On the screw-in mandrel (19) is a screw-in . '! nipple (3) screwed on, the i 3.1 with one of its screw-in end (26) ι axially extending on the screw-in mandrel i (19) matching central internal thread (28) : is provided and 3.2 at its slip-on end (23) with a , major bulge forming a ball ': (24) is provided, 3.2.1 their radial diameter corresponds essentially to the radial diameter of the thickening (13) of the plug-in nipple (2). t t < Cl Cl t Ct I 2. spark plug connector according to claim 1, '·; characterized by | 1 that the radial inner diameter (9) of the connection | sleeve (7) is essentially 6.5 mm. I. 3. Spark plug connector according to at least one of the previous | the claims, § characterized in that f I that the screw-in end (26) of the screw-in nipple \ (3) and the screw-on end (14) of the Einstecknip- i pels (2) each having a threaded openings \ enclosing blade-shaped contact surface (33, - \ 34) are provided. '■! 4. Spark plug connector according to at least one of the j the claims, | characterized by \ that the screw-in nipple (3) by at least one sides \ Measure corresponding to the diameter from the cable | term end (18) of the plug connector protrudes. 5. spark plug connector according to at least one of the preceding claims , characterized, ; that the length of the plug-in nipple (2) is dimensioned in such a way . sen is that the screw-on end (14) in slip-on ' I 1 'ill ; ',' ι ί 111 ι « t ■■ I '' II Il I " I ■ I I Il I I I I (' ti r ■ direction (5) not over the edge of the housing on the candle side (8) of the plug connector protrudes. 6. spark plug connector according to at least one of the preceding claims, characterized, that screw-in nipple (3) and push-in nipple (2) are made from just one identical component (universal nipple 35) be formed, this at its first end (36) with an internal thread (37) for engagement with the screw-in mandrel (39) and at its second end (38) with the M4 internal thread (39) (Fig. 2),