DE20104862U1 - Electromechanical connection device - Google Patents

Description

TECH-07gDE
March 20, 2001

-1-DESCRIPTION

Electromechanical connection device TECHNICAL FIELD

The invention relates to an electromechanical connecting device containing two connection parts. These two connection parts can be connected to one another in an electrically conductive manner. One connection part acts as a type of socket and the other connection part as a type of plug. Electromechanical connecting devices of this type can be used to transmit electrical currents or data streams of the most varied types and for the most varied purposes. The respective use and intended application largely determines the design of the electromechanical connecting device in question.

STATE OF THE ART

An electromechanical connecting device of the type mentioned above is known from DE-A 199 3 0 642. Its two connecting parts, which can be used as a type of socket or as a type of plug, each have several electrical contact elements. The contact elements of each connecting part lie with their mutual contact surfaces in an elastically deformable wall. Three contact elements are connected to a magnet, which is also embedded in the respective elastic wall of the two connecting parts, in such a way that when the magnet of one connecting part meets the corresponding magnet of the other connecting part, the three electrical contact elements connected to the two magnets are also pulled together into their electrical contact position.

TECH-07gDE
20 March 2001

DESCRIPTION OF THE INVENTION

Based on this prior art, the invention is based on the object of specifying an electromechanical connecting device of the type mentioned at the outset, which can be used as universally as possible and, in particular, also as universally as possible in a vehicle.

This invention is characterized by the features of claim 1
Useful further developments of the invention are
Subject matter of claim 1 subsequent
further claims.

The connection parts of the electromechanical connection device have electrical contact elements that are
Magnetic forces are moved into their contact position.
According to the invention, in addition to the contact elements in
Each connection part has at least one central channel
through which it is possible to
additional cables that are not connected to the electrical contact elements
are connected to each other by the
electromechanical connection device. These additional cables can be one or more
These can be fiber optic cables, power cables or, for example, antenna cables.

Further details on such connectors are
in terms of features can be taken from further claims and an embodiment. According to a preferred

In this embodiment, the additional cable is an antenna cable, so that in both
Connection parts the respective cable end as HF contact
The two RF contacts of the two
Connecting parts can be arranged in a circular cylindrical

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20 March 2001

There can be a recess in one connection part and a projecting sleeve in the other connection part. The projecting sleeve can be pushed into the circular cylindrical recess, which in itself is state of the art for antenna plug connections.

In the present case, the projecting sleeve can be designed to be detachable from the central channel. This is a good option if no additional cable, such as an antenna cable, is to be looped through the electromechanical connecting device.

In addition, it can be provided that the mouth of the channel ends in both connection parts can be closed and, in particular, covered.

In order to achieve an optimal mutual contact of the contact elements of the two connection parts, which becomes more problematic the more contact elements there are, according to the embodiment shown in the drawing, three (or even just two) contact elements of each connection part are coupled as a group together by a magnetic holding force to a group of contact elements of the other connection part that has the same number of contact elements. Up to three contact elements can be equally well connected to the corresponding number of contact elements even if they are at an angle to one another. In the present example, the group of, for example, three contact elements is embedded in an elastic molded part that is part of an elastic body. In the elastic body of each connection part, several groups of, for example, three contact elements are therefore

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elements. The multiple molded parts can align themselves as desired within certain limits. In addition, there is elastic deformability within the elastic molded part. In the present case, for the purpose of optimal installation, the elastic deformability between the neighboring molded parts is greater than it is within each molded part.

This different elasticity can be achieved in different ways. According to the embodiment shown in the drawing, a one-component body is present as an elastic body in which the different elasticity is created by different material thicknesses. The molded parts in which groups of, for example, three contact elements are embedded are thicker than the abutment areas with which neighboring molded parts abut one another. However, it is also possible to manufacture the molded parts from a relatively less elastic material and to encase (overmold) them with a plastic material that is softer in comparison, and to also form the abutment areas between neighboring molded parts and thus the entire outer surface of the elastic body from this relatively soft elastic material.

As also shown in the drawing, a magnet or a group of magnets is embedded in an elastic molded part together with, for example, three contact elements. The contact elements in each molded part are therefore flexibly connected to the magnet(s) of the molded part in question. When the two connecting parts are connected, the magnet(s) that are opposite each other in the connecting parts attract each other. The contact elements of the molded parts in question are also attracted.

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In order to enable good contact between the contact elements even if the contact elements are not fully axially aligned, in the present case the front contact surfaces of the contact elements of one connection part are approximately flat and the contact surfaces of the contact elements of the other connection part are curved. In addition, they are arranged slightly recessed in the connection part that serves as a socket. By touching the front surface of the socket connection part, its contact elements, which may be live, are not touched. This increases the contact protection of such socket connection parts. However, measures for such contact protection are superfluous if a work carriage is provided between the contact elements and the electrical supply line to the socket connection part, as is basically known from EP 0 573 471.

The electrical wiring technology for the contact elements, which is usually relatively rigid, can impair the mobility of the contact elements, which are floating in the elastic body. In order to fully maintain this mobility, according to a significant development of the invention, a flexible film equipped with electrically conductive tracks can be provided, which is attached to the contact elements with one of its track ends and which is connected to contact points with its other track ends, which are in the

3.0 rear part of the respective connection part, without contact with the elastic body. These contact points can be, for example, contact pins, which can then be connected electrically to the supply line of the respective connection part by means of a plug connector. Details for such an electrically

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Examples of flexible films equipped with conductive paths can be found in further claims and in the embodiment.

The magnets used in the connection parts can be coded, as is also described in the prior art mentioned at the beginning. Using coded magnets, it is possible to ensure that only certain connection parts serving as plugs can be connected to connection parts serving as sockets; only if the mutual magnets, which ensure the magnetic holding force between the connection parts, have the same coding can the contact elements floating in the elastic body be moved into their contact position. The contact elements only reach their electrically conductive contact position by appropriate displacement of the contact elements caused by magnetic force.

Special coding of the magnets results in practically unlimited application possibilities. For example, a separate code can be provided for the electromechanical connection device of a corresponding system for each application. The system can use a wide variety of electrical and electronic devices. This makes such a system ideal for the automotive sector. The electromechanical "connection devices" according to the invention can be used for all electrical devices available to the occupants of a vehicle. The connector serving as a plug can therefore be connected, for example, to a mobile phone, a fax machine, a notebook, a so-called small computer such as a "PDA" (Personal Digital Assistant) or even to devices with a higher

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Power consumption can be connected. Since these devices use different wires from the existing wires, for example the mating plug (socket connector) for power supply and data transmission, the same plug 25a can be used in the same way for a wide variety of electrical or electronic devices. The wiring of the plug 25a will be adapted to the respective connected device and will therefore usually comprise fewer than 18 wires. The plug connector always fits the same type of socket connector. This means that the same socket connector can be available for all applications. It is then advisable to place the socket connector at the location in a vehicle type desired by the occupants of a vehicle. The respective electrical or electronic device can then be connected with its plug connector to any of the existing socket connectors in the vehicle.

In the electromechanical connection device shown in the drawing, the connection parts to be connected to one another are held together not only by magnetic forces, but also by a positive holding force. The operational reliability of the electromechanical connection is thereby increased; it is therefore not possible, for example, to pull a plug connection part away from the other socket connection part, which could in principle be the case with a connection technology that is only achieved by magnetic forces. ^;

The additional positive holding force between two connection parts can be achieved in a technically simple manner by means of a type of bayonet lock. 35

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20 March 2001

Further details on this type of bayonet lock can be found in the features of further claims and an exemplary embodiment. According to a preferred embodiment, the cantilever parts of the bayonet lock and the recesses in the other connection part of the bayonet lock, each of which has an undercut, are each shaped differently from one another. This ensures that the cantilever parts can only be inserted into very specific recesses and thus into their undercuts. This means that the two connection parts can only be attached to one another in a predetermined mutual rotational alignment.

Further embodiments and advantages of the connecting device according to the invention can be found in the features further listed in the claims and in the following exemplary embodiment.

SHORT DESCRIPTION OF THE DRAWING

The invention is described and explained in more detail below with reference to the embodiment shown in the drawing.
25

Fig. 1 is a perspective front view of a connector part serving as a socket of a connecting device according to the invention,

0 Fig. 2 the front view of the connection part of Fig. 1,

Fig. 3 is a perspective front view of a plug

serving connecting part of a connecting device according to the invention,
35

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Fig. 4 is a rear view of the elastic body present in the connecting part according to Fig. 1,

Q5 Fig. 5 a representation of three electrically conductive
Flexible films equipped with webs, which
electrical coupling elements for the
elastic body according to Fig. 4 embedded 18
Contact elements are

Fig. 6 is a partially sectioned plan view of the

Back of a socket
Connection part according to Fig. 1,

"L5 Fig. 7 a representation of several connecting devices
according to the invention, applied to a vehicle,

Fig. 8 a schematic functional representation of the
2Q various applications of

Connecting devices according to the invention in the vehicle according to Fig. 7.

WAYS TO CARRY OUT THE INVENTION

From an electromechanical connecting device 10

(Fig. 8) in Fig. 1 and 3 the two connecting parts 12, 14 of this connecting device are in principle
The connection part shown in Fig. 1, which

on serves as a kind of socket, is also referred to below as power supply 12 and the connection part shown in Fig. 3, which serves as a kind of plug, is also referred to below as
Current collector 14. The current generator 12 is
regularly connected to a voltage source, while the current collector 14 is connected via its supply line 16 to a

electrical or electronic device.

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The current generator 12 has several electrical contact elements 20 on its front face, in this case 18, which are arranged in a largely evenly distributed manner on the front face 18. The contact elements 20, which are shaped like rods, are embedded in an elastic body 22. Their front contact surface 24 is slightly recessed in the front face 18 of the elastic body 22. Their contact surface 24 is flat in the present case.

The current collector 14 also has an elastic body 26, which corresponds to the elastic body 22. 18 electrical contact elements 28 are also arranged in the elastic body 26. The contact elements 28 are spaced apart from one another in the same way as the contact elements 20. These contact elements 28 have a slightly spherical contact surface 30, with which they protrude slightly from the front surface 32 of the elastic body 26.

A longitudinally continuous channel 36 is formed along the longitudinal axis 34 of the current generator 12, which ends in the area of the front face 18 with a circular cylindrical recess 38 in which an RF contact 40 is recessed. This RF contact 40 thus represents one end of an antenna line ending in the current generator 12.

In the current collector 14, a channel 46 comparable to the channel 3 6 is arranged to the longitudinal axis 44 of the current collector 14.

Through the channel 46 there is also an antenna line integrated in the supply line 16, which ends with an RF contact 50 which is recessed in a sleeve 48. The sleeve 48 protrudes forwards from the front surface 32 of the elastic body 26. The sleeve 48 and the circular cylindrical indentation 38 are mutually shaped in such a way that

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that when the two end faces 18, 32 are in contact with one another, the two RF contacts 40, 50 are conductively connected to one another.

The individual electrical contact elements 20 - and the following also applies to the contact elements 28 - are mounted in the elastic body 22 so that they can move in their axial and radial directions. Three of the electrical contact elements 20 are arranged in a molded part 54, which represents a partial area of this elastic body 22. With 18 contact elements 20, there are therefore six molded parts 54, each with three contact elements 20.

Each molded part 54 is largely separated from neighboring molded parts 54 by grooves 52 running around it, which in this case represent material weakenings. As a result, the molded parts 54 are mutually movable in all directions in the elastic body 22. In addition, the three contact elements 20 of each molded part 54 are again mounted in the molded part 54 in question so that they can move in all directions.

A magnet 56 is embedded in each molded part 54. When the two connecting parts 12, 14 are joined together, which will be described in more detail below, the magnets 56 of one connecting part 12 and the other connecting part 14 that meet each other attract each other and thereby move their respective molded part 54 with the corresponding three contact elements 20 embedded in them.

Due to the floating position of the three contact elements 20 in each molded part 54, the force of the magnets 56 thus connects three contact elements 20 of a molded part 54 of a connecting part 12 with corresponding three contact elements 28 of an identically designed

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molded part 54 of the elastic body 26 of a counter-connecting part 14 are joined together in such a way that the contact surfaces 24, 30 of the respective contact elements 20, 28 lie firmly against one another. When the two end faces 18, 32 of the two connecting parts 12, 14 meet, their end faces 18, 32 warp slightly, which, due to the mutual deformation possibility of their molded parts 54 among one another and due to the additional deformation possibility of each molded part 54, brings about the desired good contact of the 18 contact elements 2 0 with the 18 contact elements 2 8.

The six contact elements 20.1, 20.2, 20.3, 20.4, 20.5, 20.6 of two molded bodies 54.1, 54.2 are electrically connected by a flexible film with its six conductor tracks 92.1, 92.2, 92.3, 92.4, 92.5, 92.6 to the number of conductor tracks 92, in this case six contact points of a line connection point 94. With the existing 18 contact elements, there are accordingly three such films 90, which in turn are connected to three line connection points 94.

In each line connection point 94, six contact pins 96 are electrically connected to six contact elements 20 connected via the respective foil 90.

As Fig. 5 shows, the inner ends of the six conductor tracks 92.1 to 92.6 in Fig. 5 are fanned out according to the geometric arrangement of six contact elements 20, so that these six ends 98 with their six holes 100 can be electrically contacted with the six contact elements 20.1, 20.2, 20.3, 20.4, 20.5, 20.6. For this purpose, the film 90 with its six holes 100 is placed on rear thorn-like extensions of the

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relevant six contact elements 20.1 to 20.6. The six outer ends 102 of the six conductor tracks 92.1 to 92.6 in Fig. 5 lie close to one another. There is a hole 104 in each of these conductor tracks. By folding the film 90 from its flat position shown in Fig. 5 into its folded position shown in Fig. 6, the six holes 104 in the film 90 can be pushed onto the contact pins 96 already present below (according to Fig. 6) the line connection point 94. Each of the three existing line connection points 94 is held in a fixed position in the connection element 12 - and the same applies to the connection part 14 - and therefore does not load the elastic body. The 18 contact elements floatingly mounted in the elastic body 22 are not hindered in their mobility by the line connection connected to them; The flexible film 90 is sufficiently flexible for this purpose.

For further wiring connections, a conventional socket plug known in the prior art can be pushed onto the six contact pins 96 of a line connection point 94. In the case of the 18 contact elements in the present case, all 18 contact elements 20 are connected to a voltage source, for example, by means of three such socket plugs (not shown in the drawing). Their common cable can be led out centrally from the rear of the connection part 12 or as a supply line 16 from the side of the connection part 14.

In addition to the holding force caused by the magnets 56 between the two connection parts 12, 14 and thus also between the respective contact elements 20, 28, there is also a positive holding force by means of a type of bayonet lock between the two connection parts 12, 14 r 5.

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The current collector 14 has two cantilever parts 62, 64 on a circumferential recess 60 that frames its front surface. In the present case, these two cantilever parts are located opposite one another circumferentially on the recess 60. The cantilever part is larger in cross section than the cantilever part 64. The cantilever part 62 has an elliptical shape in cross section, while the cantilever part 64 has a circular cylindrical shape.

A circumferential bead 70 protrudes from the front surface 18 of the current generator 12. In this bead there are two groove-like depressions 72, 74, which are arranged opposite one another on the inside of the bead 70. The two depressions 72, 74 end in bent groove areas, each of which represents an undercut 76, 78. The depressions 72, 74 are of different widths. The depression 72 is adapted in size to the cantilever part 62 and the depression 74 to the cantilever part 64. As a result, the cantilever part 62 can only be inserted into the depression 72 and not also into the depression 74. When the current collector 14 is axially joined to the current sensor 12, which is indicated by the curved arrow 80, the two cantilever parts 62, 64 dip into the recesses 72. By subsequently rotating the current collector 14 about its longitudinal axis 44 in a clockwise direction, which is indicated by the arrow, the two cantilever parts 62, 64 slide into the two undercuts 76, 78. When the cantilever parts 62, 64 dip into the recesses 72, 74, i.e. when the two connection parts 12, 14 approach each other axially parallel to the longitudinal axis 44, 34, their contact elements 20, 28 are not yet exactly aligned with each other in the axial direction; contact elements 20, 28 that belong to each other are still laterally offset from each other. The inevitable spark when the contact elements 20, 28 come into contact:

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The flight that occurs shortly before the contact elements 20, 28 come into contact with one another is greatly reduced when the contact elements 20, 28 approach one another in an axially offset manner. As a result of the mutual rotation of the two parts 12, 14, in which the cantilever parts 62, 64 dip into the undercuts 76, 78, the contact elements 28 slide from the side, in a plane that is more or less parallel to the front surface 18, onto the electrical contact elements 20 of the current generator 12. By sliding them onto one another from the side, the contact surface of the contact elements is also kept free of dirt.

In this multi-pole connection system, the mutual contact of the current collector 14 and the current transmitter 12 is achieved by magnetic forces generated by magnets 56 in the current transmitter 12 and in the current collector 14, which are opposite one another. In addition, the fixation of the current collector 14 to the current transmitter 12 is maintained by the positive hold of the cantilever parts 62, 64 in the undercuts 76, 78. The current collector 14 cannot therefore be released by pulling it off the current transmitter 12; to release it, the current collector 14 must first be rotated relative to the current transmitter 12 in order to unscrew the cantilever parts 62, 64 from the undercuts 76, 78.

The two connecting parts of an electromechanical connecting device are thus fixed in their mutual position which effects the connection, on the one hand by the force of magnets 56 which are correspondingly placed in both connecting parts 12, 14, and on the other hand by holding forces which are generated by a positive connection between the two connecting parts 12, 14.

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The connection parts 12, 14 represent a low-voltage connection, a higher-voltage connection as well as a high-frequency connection, as required for an antenna connection, for example.

In the passenger vehicle 110 shown in Fig. 7, connection parts of type 12 are attached at 11 different locations, which function as a type of socket. One such connection part 12.1 is in the engine compartment, two such connection parts 12.2 and 12.3 on the left and right in the footwell, one such socket 12.4 in the dashboard console, two such connection parts 12.5 and 12.6 in the center console, two further such connection parts 12.7 and 12.8 in the left and right door panels, another such connection part 12.9 in the center armrest and another such connection part 12.10 in the trunk are each permanently attached. In addition, another such connection part is placed in the outside area 12.11. All of these connection parts 12.1 to 12.11 are connected to the vehicle's battery. Each of these connection parts 12.1 to 12.11 therefore contains 18 electrically conductive contact elements for the transmission of electrical currents and/or data streams.

The connection parts 14.1 to 14.6 serving as plugs can be electrically connected to each of the connection parts 12.1 to 12.11 of connecting devices 10 functioning as sockets, as is done above with the connection parts 12, 14.

In Fig. 8, various electrical/electronic devices are shown as examples, each of which is or can be connected to a connection part 14. Such devices can be, for example, a mobile phone 112, a fax machine 114, a notebook 116, a so-called PDA

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118 or a (larger) computer 120 or a television set 122. These various devices 112 to 122 do not usually require 18 wires for power and data transmission. Therefore, of the possible 18 wires that can be made available in a plug connection part 14 via the 18 contact elements present there, only a subset of wires will be connected. Therefore, for example, the cell phone can be electrically connected to different wires than the PDA 118 or the fax machine 114 to the plug connection part 14. Consequently, each of the plug connection parts 14.1, 14.2, 14.3, 14.4, 14.5, 14.6 can be connected to each of the socket connection parts 12.1 to 12.11, since the plug connection parts 14.1 to 14.6 differ from each other only in terms of their electrical/electronic components, but not in terms of the external shape which is decisive for the contact.

Claims (29)

1. Electromechanical connecting device ( 10 ), consisting of two connecting parts ( 12 , 14 ) which are to be electrically connected to one another, - wherein one connection part ( 12 ) in its function as a type of socket can be connected to an electrical voltage source and the other connection part ( 14 ) in its function as a type of plug can be connected to an electrical device ( 112 to 122 ), - with electrical contact elements ( 20 , 28 ) in both connection parts ( 12 , 14 ), which are designed to attract each other by means of magnetic forces, characterized in that - in addition to the contact elements ( 20 ), at least one connection device ( 36 , 46 ) for at least one additional cable, such as in particular a fiber optic cable and/or power cable and/or antenna cable, is present in each connection part ( 12 , 14 ), - when the two connecting parts ( 12 , 14 ) are connected to one another, their connecting devices are also coupled to one another. 2. Connecting device according to claim 1, characterized in that - a central channel ( 36 , 46 ) is present in each connecting part ( 12 , 14 ), - that at least one additional cable can be guided through the respective channel ( 36 , 46 ) and ends with a connection device in each connection part. 3. Connecting device according to claim 1 or 2, characterized in that - the connection device for the at least one additional cable is designed as an RF contact ( 40 , 50 ). 4. Connecting device according to claim 3, characterized in that - the HF contact ( 40 ) is present in one connection part ( 12 ) in a circular cylindrical recess ( 38 ) and in the other connection part ( 14 ) in a cantilevered sleeve ( 48 ). 5. Connecting device according to claim 4, characterized in that - the projecting sleeve ( 48 ) is detachable. 6. Connecting device according to claim 4 or 5, characterized in that - the mouth of one channel ( 36 ) having the circular-cylindrical recess ( 38 ) and the mouth of the other channel ( 46 ) freed from the projecting sleeve ( 48 ) can each be covered or closed. 7. Connecting device according to one of the preceding claims, characterized in that - two or three contact elements ( 20 ) of a connecting part ( 12 , 14 ) can be coupled as a group together by a magnetic holding force to a group of contact elements ( 28 ) of another connecting part ( 14 ) having the same number of contact elements. 8. Connecting device according to claim 7, characterized in that - the group of contact elements containing two or three contact elements ( 20 , 28 ) are present in an elastic molded part ( 54 ), - the elastic molded part ( 54 ) is part of an elastic body ( 22 , 26 ), - several elastic molded parts ( 54 ) are mutually deformable in the elastic body ( 22 , 26 ), - the elastic deformability between adjacent mold parts ( 54 ) is greater than the elastic deformability within each mold part ( 54 ). 9. Connecting device according to one of the preceding claims, characterized in that - one magnet ( 56 ) or a group of magnets are embedded in an elastic molded part ( 54 ), - the contact elements ( 20 , 28 ) of a group are also embedded in a molded part ( 54 ), so that the contact elements ( 20 , 28 ) of each molded part ( 54 ) are connected in a flexible manner to the magnet(s) ( 56 ) of the molded part ( 54 ) in question. 10. Connecting device according to one of the preceding claims, characterized in that - the front contact surfaces ( 24 ) of the contact elements ( 20 ) of one connection part ( 12 ) are slightly recessed relative to the front surface ( 18 ) of the elastic molded part ( 54 ) and/or the elastic body ( 22 ), - the front contact surfaces ( 30 ) of the contact elements ( 28 ) of the other connection part ( 14 ) to be contacted protrude slightly from the front surface ( 32 ) of this other molded part ( 54 ) and/or elastic body ( 26 ). 11. Connecting device according to claim 10, characterized in that - the contact surfaces ( 24 ) of the countersunk contact elements ( 20 ) are approximately flat, - the contact surfaces ( 30 ) of the projecting contact elements ( 28 ) are curved. 12. Connecting device according to one of the preceding claims, characterized in that - several contact elements ( 20 , 28 ) and/or several groups of contact elements of a connecting part ( 12 , 14 ) are connected in a conductive manner to a line connection point ( 94 ) of this connecting part ( 12 , 14 ) via an electrical coupling element ( 90 ), - the line connection ( 16 ) leading outwards from the respective connection part can be connected to this one or to the several line connection points ( 94 ) of this connection part ( 12 , 14 ). 13. Connecting device according to one of the preceding claims, characterized in that - a flexible film ( 90 ) provided with electrically conductive tracks is present as a coupling element. 14. Connecting device according to claim 13, characterized in that - the conductor tracks ( 92 ) of this foil ( 90 ) are arranged closely together at one end ( 102 ) and are arranged mutually fanned out at the other end ( 98 ), - each of the fanned out ends ( 98 ) is connected to a contact element ( 20 , 28 ). 15. Connecting device according to one of the preceding claims, characterized in that - the contact elements ( 20 , 28 ) are spaced apart from one another by the same distance. 16. Connecting device according to one of the preceding claims, characterized in that - each contact element ( 20 , 28 ) is rod-shaped with a pin-shaped projection on the rear, - each of the fanned-out ends ( 98 ) of the conductor tracks ( 92 ) has a hole ( 100 ) such that the conductor track ( 92 ) can be pushed over the pin-shaped projection and fastened there with this hole ( 100 ). 17. Connecting device according to one of the preceding claims, characterized in that - the ends ( 102 ) of the conductor track ( 92 ) which are closely spaced apart have holes ( 104 ) such that the conductor tracks ( 92 ) with these holes ( 104 ) can be pushed over a corresponding number of contact pins ( 96 ) of a conductor connection point ( 94 ). 18. Connecting device according to claim 17, characterized in that - a connector can be plugged into the contact pins ( 96 ) of each line connection point ( 94 ). 19. Connecting device according to one of the preceding claims, characterized in that - a connecting part ( 12 , 14 ) contains six groups of three contact elements ( 20 , 28 ) each, - the contact elements ( 20 , 28 ) are evenly distributed in the connection part ( 12 , 14 ), - two groups of contact elements ( 20 , 28 ) are each connected via a coupling element ( 90 ) to a line connection point ( 94 ) of this connection part ( 12 , 14 ), - the lines of the three line connection points ( 94 ) and the additional line present in the central channel ( 36 , 46 ) can be led out of the connection part ( 14 ) in a common line cable ( 16 ). 20. Connecting device according to one of the preceding claims, characterized in that - the magnetic forces can be generated by coded magnets ( 56 ). 21. Connecting device according to claim 20, characterized in that - at least one group of the connection parts ( 12 ) present in a vehicle ( 110 ), each of which can be used functionally as a socket, has coded magnets ( 56 ), - connecting parts ( 14 ) which can be used as plugs have the same coded magnets ( 56 ) such that only these connecting parts ( 14 ) which can be used as plugs can be coupled to these connecting parts ( 12 ) which can be used as sockets. 22. Connecting device according to one of the preceding claims, characterized in that - the contact elements ( 20 ) in the connection part ( 12 ) which can be used functionally as a socket are connected to an electrical voltage source, - in the connection part ( 14 ) which can be used functionally as a plug, only some of the contact elements ( 28 ) are electrically connected to an electronic or electrical device ( 112 to 122 ), - different devices ( 112 to 122 ) are each connected to one of these connection parts ( 14 ) which can be used as a plug, wherein the plugs are of the same shape but are electrically connected to the respective device ( 112 to 122 ) with different contact elements ( 28 ), so that each device ( 112 to 122 ) can be physically and electrically functionally coupled to each connection part ( 12 ) serving as a socket via its plug ( 14 ) which is adapted to it only in an electrically functional manner. 23. Connecting device according to one of the preceding claims, characterized in that - when the two connecting parts ( 12 , 14 ) are connected to one another, in addition to the magnetic holding force that can be exerted by means of the magnetic forces, a positive holding force is present between the two connecting parts ( 12 , 14 ). 24. Connecting device according to claim 23, characterized in that - a type of bayonet lock ( 62 , 64 , 72 , 74 , 76 , 78 ) is present between the two connecting parts. 25. Connecting device according to one of the preceding claims, characterized in that - at least one cantilever part ( 62 , 64 ) is present on one of the connecting parts ( 14 ), which can be inserted into a respective recess ( 72 , 74 ) present in the other connecting part ( 12 ) when the two connecting parts ( 12 , 14 ) are axially approached ( 80 ), - the at least one recess ( 72 , 74 ) has an undercut ( 76 , 78 ) into which the at least one cantilever part ( 62 , 64 ) can be inserted by mutual rotation ( 82 ) of the two connecting parts ( 12 , 14 ). 26. Connecting device according to claim 25, characterized in that - two recesses ( 72 , 74 ) of one connecting part ( 12 ) are present in a ring-like projecting bead ( 70 ) which encompasses all contact elements ( 20 ) of this connecting part ( 12 ), - two cantilever parts ( 62 , 64 ) are present on an annular recess ( 60 ) of this other connection part ( 14 ) which encompasses all contact elements ( 28 ) of this other connection part ( 14 ). 27. Connecting device according to one of the preceding claims, characterized in that - the cantilever part or parts ( 62 , 64 ) are present on the connection part ( 14 ) which can be connected to an electrical device, - the one or more recesses ( 72 , 74 ) are present in the other connection part ( 14 ) which can be connected to an electrical voltage source. 28. Connecting device according to one of the preceding claims, characterized in that - the cantilever parts ( 62 , 64 ) and the recesses ( 72 , 74 ) adapted to them are each shaped differently from one another, so that only a very specific cantilever part ( 62 or 64 ) can be inserted into a very specific recess ( 72 or 74 ). 29. Connecting device according to one of the preceding claims, characterized in that - two cantilever parts ( 62 , 64 ) are arranged axially opposite one another on a connecting part ( 14 ).