EP2859626B1 - Electrical connector with bladecontact to directly connect with housing panel - Google Patents

Description

The invention relates to a Schutzleiterkontaktiersystem that is suitable for electrical equipment and systems with different supply voltages.

State of the art

Electrical appliances such as electric cookers, ovens, refrigerators, microwaves, dishwashers, industrial processing machines, vehicle diagnostic equipment, etc., require electrical power to function.

To ensure the power supply, most of these and other analog devices have a device connection system as a transfer point of the electrical energy between the electrical supply line and the internal equipment wiring.
Often this is referred to as a connection terminal.

• die elektrische Anschlussleitung soll austauschbar sein,
• diese Anschlussleitung unterliegt einer erhöhten mechanischen Belastung und muss daher mechanisch beständiger sein als die Geräteinnenverdrahtung des Gerätes und
• die Geräteinnenverdrahtung unterliegt erhöhten thermischen Belastungen und muss daher thermisch beständigeres Isolationsmaterial als die Anschlussleitung besitzen.

This is necessary for the following different reasons, such as:

• the electrical connection line should be interchangeable,
• This connecting cable is subject to an increased mechanical load and must therefore be more mechanically resistant than the device internal wiring of the device and
• the device internal wiring is subject to increased thermal loads and therefore must have thermally more stable insulation material than the connecting cable.

The connection terminals are mounted in the industrial production of these devices by the device manufacturer within the manufacturing process in the device outer wall. In a further manufacturing step, the power line must be connected via the connection points with the device's internal wiring. Depending on the system being used, this may be done by various technologies, such as e.g. Connection of the wires of the device connection line and the device internal wiring by means of detachable connection technologies - screw terminals, plug contacts, spring terminals, insulation displacement connectors, etc., or / and by means of permanent connection technologies, such as thermal welding, ultrasonic welding, soldering, crimping, and the like.

1. 1. Montage des Anschlussterminals in die Einbringöffnung der Gerätewand.
2. 2. Verbindung der entsprechenden Anzahl an Adern der Zuleitung mit einer korrespondierenden Anzahl an Geräteinnenverdrahtungsleitungen - z.B.: bei einem Elektrogerät für Wechselstrom und Verwendung einer Schutzmaßnahme gegen gefährliche Körperströme, auf der Basis eines Schutzleiteranschlusses sind dies drei elektrische Verbindungen. Bei einem Elektrogerät für Drehstrom und gleicher Schutzmaßnahme gegen gefährliche Körperströme sind dies fünf elektrische Verbindungen.

Regardless of which of the named connection technologies is used between the wires of the device connection cable and the internal wiring of the device, two realization steps are usually necessary to implement them:

1. 1. Assembly of the connection terminal in the insertion opening of the device wall.
2. 2. Connection of the appropriate number of wires of the supply line with a corresponding number of internal device wiring lines - eg: in an electric device for AC and use of a protective measure against dangerous body currents, based on a protective conductor connection, these are three electrical connections. In an electric device for three-phase current and the same protection against dangerous body currents, these are five electrical connections.

If the device housing is made of an electrically conductive material which, in the event of an error, e.g. In order to ensure a dangerous potential, and if protection against dangerous body currents is ensured by the use of protective measures with a protective conductor connection, a safe, low-impedance connection of the protective conductor potential of the power supply to the device housing must be ensured.

According to the prior art, the installation of the connection terminal in the device housing and the connection of the protective conductor of the device connection cable with the conductive device housing are two separate technological steps, which require additional assembly times and additional connection material.

In the pamphlets DE 10 2005 029 384 A1 . DE 10 2008 009 142 A1 . DE 10 2007 057 335 A1 and DE 10 2005 040 241 A1 Modular connection systems for establishing the electrical connection between the building electrical installation and the device internal wiring of an electrical device are described.

However, the advantages for the users of the devices presented in the documents require considerable manufacturing and cost problems and expenses for the manufacturers of these devices.

So are the in the publication DE 10 2007 057 335 A1 and DE 10 2005 040 241 A1 described solution only for contacting the device connection cable to an indoor unit wiring in the form of a printed circuit, such as electronic circuit board, as a displacement of the plug contacts during insertion of the can is avoided by this.

Irrespective of this, the connection of the protective conductor to the device housing must be realized in an additional technological step and with the use of additional material.

The in the pamphlets DE 10 2005 029 384 A1 and
DE 10 2008 009 142 A1 As a result of their design, the solutions described are strongly limited to special applications. They also require the previously described additional technological steps and additional materials for a connection of the protective conductor to the device housing.

After the publication US 5,924,877 A A solution is known which is specifically directed to the ground connection of a module in a module carrier and a method for operating and establishing the ground connection. The connection presented there consists of a ground pin, which establishes a protective conductor connection between the module and the module carrier without contacting the active conductors. It is the claim of the solution presented there to connect the housing of the module to the protective conductor of the module carrier and not to connect the active conductor of the module carrier with the module.

The in the publication US 5,924,877 A described solution has some disadvantages. Thus, with the described solution contacting the protective conductor and the active conductors of the power supply and the module in one step is not possible. A, as in the standard DIN EN 61140: 2007-03 - Protection against electric shock - Common requirements for equipment and equipment - prescribed, leading protective conductor connection is not possible with this solution. Also, the solution is tailored to the specific requirements of a construction of modules and module carrier.

In the US 6,231,384 An electrical connection device with a cable connection and a metal plate is disclosed.

The US 4,395,081 discloses an electrical connector, in particular a sheet metal contact, which electrically connects a conductive cable to a fixed prong on a ground plane.

In the US 2009133928 discloses a floor-standing home appliance with at least one AC connection for the electrical power supply via the domestic power grid.

The US 6,238,242 discloses a connector, in particular a wall-mounting connector with an integrated locking device for quick coupling and uncoupling of an arrangement in a computer cover.

In the FR 2698492 discloses an integrated cable and terminal block, especially for power supplies, which is mounted on a terminal plate.

task

As the cost and quality pressures in industrial manufacturing continue to increase, it is vital for every manufacturer to have all the potential cost reduction potentials to develop without sacrificing quality.

It is therefore the object of the present invention to propose a cost-effective in production and assembly system for connecting the device connection cable with the device internal wiring.
This system is intended to permanently ensure the electrical safety and device safety and at the same time provide the user of the present invention with a significant savings potential in terms of assembly time and assembly material. The solution should be available in appropriate variants for both devices with a rotary or AC power connection.

This object is achieved by a device connection system for electrical appliances having the features of patent claim 1. An advantageous embodiment of the invention is specified in the dependent claims 2 to 10.
By using assembly time-saving and mounting material-saving connection technology, the low-impedance, mechanically secure connection of the protective conductor potential of the power supply network is already during installation of the device connection system in the insertion of the device housing and / or on a mounting unit for the device connection system to be supplied with electrical energy device and the housing potential of the device. As a result, an essential prerequisite for the safe functioning of the protective measures against dangerous body currents is already established by the installation of the device connection system.

The solution of this object by the invention is also characterized by a device connection system, which is attached to the outer boundary surfaces or inside the electrical device.

Depending on the line-side current or voltage supply system, the device connection system has the number of connection points required for the device function - screw contact points, welds, spring-cage clamping points, insulation displacement contact points, etc. - between the device connection cable and the device's internal wiring. In addition, if necessary, these connection points can be provided with contact elements for the realization of connections between the conductors - e.g. Phase L1 and phase L2, so-called bridges - be executed.

Above all, the device connection system has a suitable contacting of the power line protection conductor directly to the device housing in such a way that the contact takes place immediately during assembly and not by an additional step and using additional bonding material.

This technical implementation ensures that even when inserting the device connection system in the device housing a mechanically and electrically safe and durable connection of the protective earth with the device housing potential, and thus the condition for the protection against dangerous body currents is permanently ensured.

For this purpose, the housing cutout of the electrical device into which the device connection system is inserted is expanded by a protective conductor connection lug. This can be made directly in the realization of the housing cutout, regardless of the technology used for this purpose - lasers, punching, embossing, etc. -.

Instead of the arrangement of the Geräteanschlusssytems in the housing, this can also be done on or in a mounting unit of a device.

Furthermore, the actual connection terminal has a suitable contacting element, such as: flat plug contact, timer or pliers contact, which already implements the electrical connection to the housing when inserting the terminal into the device.

For equipment connection systems with inseparable connections between equipment connection cables and internal equipment wiring, suitable design measures - e.g. Locking lugs - permanently ensures that the terminal and thus the protective conductor connection can not be disconnected from the device.

In the case of device connection systems with a separable connection between the device connection cables and the internal wiring of the device, the longer version of the protective conductor plug contact ensures that the current-carrying contacts and then the protective conductor are always disconnected when the socket is removed from the plug.

This measure significantly increases the safety of the device. In both apparatus connection systems described above, the combination of design features locking lugs, connector housing, collar, etc., the installation requirements - device connection system should be used from the inside or outside - the specific device can be met.

• > Verringerung von Material- und Fertigungsaufwendungen für das Geräteverbindungssystem
• > Möglichkeit einer festen und lösbaren Verbindung zwischen Geräteanschlussleitung und Geräteinnenverdrahtung
• > Einsparung von Fertigungszeit durch gleichzeitiges Einfügen des Geräteanschlusssystems in und elektrisches Verbinden des Schutzleiters mit dem Gerätegehäuse
• > Einsparung von zusätzlichen Materialien für die Verbindung des Netzschutzleiters mit dem Geräteschutzleiter bzw. dem Gerätegehäuse
• > Möglichkeit einer vollautomatischen Fertigung und Geräteprüfung
• > Vereinfachung des Geräteanschlusses an die Gebäudeelektroinstallation.

Due to the structural features, while simplifying the overall system, the invention has a number of advantages:

• > Reduction of material and manufacturing costs for the equipment connection system
• > Possibility of a fixed and detachable connection between the device connection cable and the device internal wiring
• > Saves manufacturing time by simultaneously inserting the device connection system into and electrically connecting the protective conductor to the device housing
• > Saving of additional materials for the connection of the mains protective conductor with the device protective conductor or the device housing
• > Possibility of fully automatic production and device testing
• > Simplification of the device connection to the building electrical installation.

embodiment

Fig. 1

ein Motordiagnosegerät 6, angeschlossen an die dreiadrige Gebäudeelektroinstallation über ein Geräteanschlusssystem.

Fig. 2

Geräteanschlusssystem für Drehstromgeräte in Montageposition.

Fig. 3

Geräteanschlusssystem für Drehstromgeräte, geöffnet dargestellt auf der Netzanschlussseite.

Fig. 4

Geräteanschlusssystem für Drehstromgeräte, Detaildarstellung der Verbindung des Netzschutzleiters der Geräteanschlussleitung-Ader 18 des Schutzleiters mit dem Gerätegehäuse 5.

Fig. 5

Geräteanschlusssystem für Drehstromgeräte am Beispiel eines Cerankochfeldes in Darstellung ohne Glasabdeckungsplatte

Fig. 6

Erste Ausführungsform eines Geräteanschlusssystems für Wechselstromgeräte mit Steckergehäuse 24 und Winkelgerätedose 23 mit auf der Dose 25 liegendem Schutzleiteranschlusskontakt 35 für die in das Gerätegehäuse 5 abgewinkelte Schutzleiteranschlusslasche 34.

Fig. 7

Schnittdarstellung von Figur 6 in der Draufsicht

Fig. 8

Zweites Geräteanschlusssystem für Wechselstromgeräte in Vorderansicht des Steckergehäuses 24 in der Einbausituation.

Fig. 9

Geräteanschlusssystem für Wechselstromgeräte nach Figur 8 in Seitenansicht.

Fig. 10

Dritte Ausführungsform eines Geräteanschlusssystems für Wechselstromgeräte in teilweiser Schnittdarstellung der Seitenansicht, die Winkelgerätedose 23 ist eingesteckt in ein eingebautes Steckergehäuse 24.

Fig. 11

Viertes Geräteanschlusssystem für Wechselstromgeräte in Seitenansicht des Steckergehäuses 24 in eingebauter Position für die Montage aus dem Geräteinnenraum.

Fig. 12

Geräteanschlusssystem für Wechselstromgeräte nach Figur 11, in Schnittdarstellung der Draufsicht vom Steckergehäuse 24 für die Montage aus dem Geräteinnenraum.

In the following the invention with reference to several embodiments with the FIGS. 1 to 12 explained in more detail. It shows:

Fig. 1

a motor diagnostic device 6 connected to the three-wire building electrical installation via a device connection system.

Fig. 2

Device connection system for three-phase current devices in mounting position.

Fig. 3

Device connection system for three-phase devices, shown open on the mains connection side.

Fig. 4

Device connection system for three-phase current devices, detailed representation of the connection of the network protection conductor of the device connection conductor wire 18 of the protective conductor to the device housing 5.

Fig. 5

Device connection system for three-phase current devices using the example of a ceramic hob in illustration without glass cover plate

Fig. 6

First embodiment of a device connection system for AC devices with connector housing 24 and angle box 23 with lying on the socket 25 protective conductor connection contact 35 for the angled in the device housing 5 protective conductor connection tab 34th

Fig. 7

Sectional view of FIG. 6 in the plan view

Fig. 8

Second device connection system for AC devices in front view of the connector housing 24 in the installation situation.

Fig. 9

Device connection system for AC devices according to FIG. 8 in side view.

Fig. 10

Third embodiment of a device connection system for AC devices in a partial sectional view of the side view, the Winkelgerätedose 23 is inserted into a built-in connector housing 24th

Fig. 11

Fourth device connection system for AC devices in a side view of the connector housing 24 in the installed position for mounting from the interior of the device.

Fig. 12

Device connection system for AC devices according to FIG. 11 in a sectional view of the plan view of the connector housing 24 for mounting from the device interior.

The representation of the embodiments is based on the basic idea of the solution that at the insertion opening 38 for the device connection system to the device housing 5, a protective conductor terminal lug 10 is formed as a material component of the device housing 5 and this protective conductor terminal lug 10 with a correspondingly formed protective conductor terminal contact 11 of a device connection system; For example, a connection terminal 4 or a connector housing 24, is operatively connected.

In embodiments which allow a nondestructive separation of the wires of the device connection line 3 from the wires of the device inner wiring 31, FIG. 6 to FIG. 12 - The protective conductor connecting plate 10 is formed in its length so that the current-carrying plug contacts 28 are disconnected from the protective conductor connection contact 11.

The FIG. 1 shows as an exemplary electrical appliance, a motor diagnostic unit 6, connected to the three-wire building electrical installation on Schukosteckdose 1, Schukostecker 2, device connection cable 3, Winkelgerätedose 23 and inserted into the device housing box 25, which is supplied in this way with electrical energy.
The engine diagnostic device 6 is connected via the engine diagnostic cable 7 with the engine 8 of the motor vehicle 9.

The FIG. 2 shows one in the arrangement with respect to the solution FIG. 1 analog device connection system, which, however, is designed for three-phase devices in the exemplary embodiment with five-wire device connection line 3. The connection terminal 4 is shown in its mounting position in the insertion opening 38, and is simultaneously moved horizontally in the assembly process in the direction of the protective conductor connecting lug 10 and perpendicular to the device housing 5. Through this assembly movement, supported by the insertion aid 12 for the protective conductor connecting lug 10, which is arranged on the front side of the connection terminal 4 below the insertion level of the protective conductor connection contact 11, the protective conductor connection tab 10 is pushed into the protective conductor connection contact 11 and thus the required, mechanically safe and electrically low-impedance connection between the device housing 5 and the device connection line -Der 18 of the protective conductor made.

The connection and position assurance of the connection terminal 4 in the device housing 5 and in particular the securing of the low-impedance electrical connection of the device lead wire 18 of the protective conductor via the protective conductor connection contact 11 with the protective conductor connection tab 10 of the device housing 5 is ensured by means Verrastnasen 13. These Verrastnasen 13 are arranged on the opposite side Verrastseite the locking terminal 4 and fixing the terminal 4 firmly in the insertion opening 38 of the device housing 5, in which these Verrastnasen 13 engage behind the device housing 5 behind the inside of the insertion opening 38 and the Verrastausleger the connection terminal 4 comes to rest on the bottom of the housing wall.

The FIG. 3 shows the connection terminal 4 for three-phase devices in the open representation on the mains connection side (five-wire device connection line 3) .In this embodiment, the connection and position assurance of the connection terminal 4 in the device housing 5 and in particular the fuse of low-impedance electrical connection of the device lead wire-18 of the protective conductor over the protective conductor connection contact 11 designed as a blade receptacle, the protective conductor connection tab 10 with the device housing 5, which is latched into the device housing 5 by means of latching lugs 13, shown. In this case, the protective conductor connection contact 11 is arranged on the front side, that is to say on the side of the connection terminal 4, which is first inserted into the introduction opening 38 of the housing wall of the device housing 5.

In this embodiment, a variant of the strain relief 21 for the device connection line 3 in the form of a positive and positive baffle is shown. In the exemplary embodiment, the device connection line cores 14 to 17 of the device connection line 3 are contacted to the connection points 19 between the device connection line 3 and the device internal wiring 31 by means of welding technology, such as ultrasonic welding or thermal welding. The contact between the device connection lead wire 18 of the protective conductor and the protective conductor connection contact 11 is contacted in the exemplary embodiment by means of crimping.

The connection points 19 between the power supply line, in this case the device connection line 3, and the device inner wiring 31 are provided with a bridge 20 between the device connection line 15, phase L2, and the device connection line 16, phase L3.

In the Fig. 3 can also be seen the position fixation of the connection terminal 4 in the device housing 5 by means of locking lugs 13th

The FIG. 4 shows a device connection system for three-phase devices FIG. 3 as a detail.

In this case, the connection terminal 4 is completely engaged in the device housing 5 in the illustrated embodiment variant. The device connecting lead wire 18 of the protective conductor is by means of protective conductor terminal contact 11 in the embodiment of a blade receptacle with the Protective conductor connecting plate 10 and thus connected to the device housing 5 of the device.

By the detailed representation of the connection terminal 4 it can be seen that the protective conductor terminal contact 11 is secured in position in the form of pressure tabs by a terminal 4 arranged in the connection terminal fixing system 22 in which these and the housing inner wall of the front side of the connection terminal 4 surround the blade receptacle.

Furthermore, the shows FIG. 4 , the connection points 19 between power supply line and device internal wiring for connection of the device lead wires 15 - 17, in which between the connection point for the device lead wire 15, phase L2, and device lead wire 16, phase L3, a bridge 20 is inserted.

The FIG. 5 shows the device connection system for three-phase current devices using the example of a ceramic hob in illustration without glass cover plate. The connection terminal 4 connects the wires of the device connecting line 3 via the terminal connections 30 for the internal wiring to the wires of the device inner wiring 31 and thus supplies the device control electronics 32 and the cooking plates 33 with the required operating voltage.

The FIG. 6 shows the FIG. 1 following a variant of a three-wire device connection system for AC devices with connector housing 24 and Winkelgerätedose 23 lying on the box 25 protective conductor connection contact 35 for the angled into the device housing 5 protective conductor connection plate 34. The angle device box 23 is connected via the device connection cable 3 with the building electrical installation.

The connector housing 24 is mounted in the insertion opening 38, the device housing 5 and is secured in position by the collar embodiment outside 26 and locking elements, not shown. By inserting the Winkelgerätedose 23 into the connector housing 24, located in the socket 25 pliers contacts on the plug contacts 28, the electrical connection of the device connection line 3 and the device inner wiring 31 ago.

The electrically safe connection of the protective conductor potential of the network protection conductor to the protective conductor potential of the electrical device is ensured on the side of the angle device box 23 by means of protective conductor connection contact 35 on the top side of the box 25 and on the device side by means of protective conductor connection lug 34 of the device housing 5. The protective conductor connecting lug 34 is angled at right angles into the device housing 5, as in FIG FIG. 7 shown.

By means of Einrastaussparung 27 on the two sides of the actual box 25 of the Winkelgerätedose 23 and corresponding with these corresponding form elements of the plug housing 24 ensures that after connecting the plug housing 24 and socket 25 they are securely connected to each other by non-releasable locking. A release of the latching is possible only with tools from the interior of the device housing 5.

The FIG. 7 shows the sectional view of FIG. 6 in the plan view. Shown is the unsolvable without auxiliary tool connection between socket 25 of the angle device box 23 and the connector housing 24 by means of Einrastaussparung 27 and locking lug 39 for connector embodiment, inside, positionally secured.

The connector housing 24 is fixed in the device housing 5 by the interaction between the collar embodiment-outside 26 and the locking lugs 40 for plug-embodiment-outside.

The electrically and mechanically secure connection of the protective conductor potential to the housing potential is ensured by the protective conductor connection lug 34, embodiment, and the protective conductor connection contact 35, embodiment Powertimer.

The FIGS. 8 and 9 In the illustrated embodiment, the assembly of the plug housing 24 in the device housing 5 is perpendicular from above into the one-sided open insertion opening 38. By the downward movement of the plug housing 24 during assembly in the introduction opening 38 of the device housing 5, the protective conductor contact 11 is mechanically and electrically connected to the protective conductor connecting lug 10. This ensures that after insertion of the corresponding box 25 of the angle device box 23 in the plug housing 24 via the plug contacts 28, the electrical device is supplied with the operating voltage, and at the same time the power protection potential on the device housing 5 is applied.

For this purpose, a protective conductor plug contact 28 a in the length to the plug contacts 28 is formed so that when separating the can 25 from the plug housing 24 of the protective conductor plug contact 28 a after the conductor connection contacts - power timer 29 is separated from the can 25.

Alternatively, the absolute length of all three plug contacts 28 and 28a may be the same length.
However, the middle protective conductor plug contact 28a is arranged in a position such that it continues into the plug housing 24 protrudes and thus when pulling out the can 25 from the connector housing 24 of the protective conductor plug contact 28a after the current-carrying conductor connection contacts - are separated Powertimer 29 embodiment. This ensures that the current-carrying contacts are always disconnected before the protective conductor contact.

This is an essential prerequisite for a safe function of the protective measures against dangerous body currents, which are required for a large part of such devices powered by electrical energy.

By the collar-embodiment-outside 26 and the collar-embodiment-inside 37, the plug housing 24 is secured in position in the insertion opening 38 of the device housing 5 in the illustrated embodiments.

By means of plug contacts 28, terminals 30 for internal wiring, and device internal wiring 31, the electrical device is supplied with the required operating voltage.

The FIG. 10 shows a third embodiment of a device connection system for AC devices as a sectional view in side view of an angle device box 23, inserted in a connector housing 24, which is installed in a device housing 5.

The solution particular and thus the high cost-saving potential of this embodiment is that for transmitting the protective conductor potential of the building electrical installation via the device connection cable 3, the device lead wire 18 of the protective conductor, the protective conductor terminal contact 35 in the embodiment of a Powertimer, the protective conductor terminal lug 10th on the device housing 5 of the least material and installation costs is required. The protective conductor connecting lug 10 is angled so that it protrudes from the device housing 5 out.

• des Fixiersystems 22 für die Kontakte und der mit Einführschrägen versehenen Einführhilfe 36, welche beide in dieser dritten Ausführungsvariante für den Schutzleiteranschlusskontakt 35 mit angeschlossener Geräteanschlussleitung-Ader 18 des Schutzleiters und auch für den Neutralleiter- und Leiteranschlusskontakt 29 mit angeschlossener Geräteanschlussleitung-Ader Phase L1 14 zur Anwendung kommen;
• des Bundes-Ausführungsform außen 26, welcher hier die Funktion der Lagesicherung für Steckergehäuse 24 und Winkelgerätedose 23 gleichermaßen gewährleistet.

Shown in the FIG. 10 Furthermore, the peculiarities of this embodiment with respect to:

• the fixation system 22 for the contacts and the Einführhilfe provided with insertion bevels 36, both of which in this third embodiment for the protective conductor terminal 35 with connected device lead wire 18 of the protective conductor and also for the neutral conductor and conductor terminal contact 29 with connected device lead wire phase L1 to 14 Application come;
• the federal embodiment outside 26, which here guarantees the function of securing the position of the connector housing 24 and 23 Winkelgerätedose alike.

The connection of the mains supply voltage to the device internal wiring 31 is again via the terminal contact 30 for internal wiring and the plug contact 28th

The FIG. 11 shows a fourth embodiment of the device connection system for AC devices in side view of a connector housing 24 for mounting in the device interior. This variant allows the device manufacturer to mount the device connection system from the interior of the device and thus achieve installation cost savings for devices with special installation features.

The protective conductor connecting lug 10 is angled so that it projects into the device housing 5, and there during the assembly process of the connector housing 24 in the device housing 5 by means of protective conductor terminal contact 11 the Active connection of the protective conductor potential between the device housing 5 and power cord manufactures.

For this purpose, the system has, as shown in the sectional view FIG. 12 clearly visible, on each two Verrastnasen for plug-embodiment outside 40, which are pressed during assembly of the plug housing 24 from the interior of the device in the insertion opening 38 of the device housing 5 in the interior of the plug housing 24. If during assembly movement of the collar embodiment inside 37 pressed against the device housing 5, the two Verrastnasen for plug-embodiment outside 40 springs out of the interior of the plug housing 24 back to its basic position, and locking by engaging behind the insertion opening 38 of the device housing 5 in cooperation the collar embodiment inside 37 the terminal in its installed position.

The device internal wiring 31 of the device is connected via the connection terminal 30 for the internal wiring and the plug contacts 28.

The FIG. 12 shows the in FIG. 11 illustrated and ibid described variant of the device connection system for AC devices as a sectional view of the top view of the plug housing 24 for mounting from the interior of the device.

The connector housing 24 is pushed out of the device interior through the device housing 5 and secured in position by means of the Verrastnasen for the plug-embodiment-outside 40 and the abutment collar embodiment inside 37. When plugging the Winkelgerätedose 23 into the connector housing 24, the plug contacts 28 are connected to the mains voltage and the electrical device gets over the terminal contacts 30 (blade receptacle) for the internal wiring and the device internal wiring connected thereto 31 the necessary for its function electrical energy. When inserting the Winkelgerätedose 23 engages the Verrastnase for the can embodiment-inside 39 in the complementary Einrastaussparung 27 of box 25 of the Winkelgerätedose 23 and fixes them in the connector housing 24th

LIST OF REFERENCE NUMBERS

1

Schuko socket

2

Safety plug

3

Device connection cable

4

connection terminal

5

device housing

6

Engine diagnostic device

7

Engine diagnostics cable

8th

internal combustion engine

9

motor vehicle

10

Protective conductor connection bracket

11

Protective conductor connection contact

12

Insertion aid for PE conductor connection lug

13

Latch nose for terminal

14

Device connection cable - core phase L1

15

Device connection cable - core phase L2

16

Device connection cable - core phase L3

17

Device connection cable - core neutral conductor

18

Device connection cable - core protective conductor

19

Connection points between power supply cable and device internal wiring

20

bridge

21

Strain relief

22

Fixing system for contacts

23

Angle appliance box

24

plug housing

25

can

26

Waistband - embodiment outside

27

locking housing

28

plug Contact

28a

Protective conductor connector contact

29

Conductor terminal contact - Powertimer embodiment

30

Connection contact for internal wiring

31

Equipment inside wiring

32

Device control electronics

33

hotplates

34

Protective conductor connecting lug - embodiment angled

35

Protective conductor connection contact - Powertimer version

36

Insertion aid for plug contacts

37

Waistband - embodiment inside

38

introduction opening

39

Locking nose for box - inside version

40

Locking nose for plug - external version

Claims (10)

1. A protective earth conductor contacting system with a device connection system (4, 24, 25) of electric devices and a device housing (5), which comprises an insertion opening (38) for the device connection system (4, 24, 25), wherein a protective earth conductor connector (10, 34), which is part of the device housing (5), can be mechanically operatively connected with a correspondingly designed protective earth conductor connection contact (11, 35) of the device connection system (4, 24, 25), characterized in that the protective earth conductor connection is designed as a protective earth conductor connection clip at the insertion opening (36) for the device connection system (1), so that, in one work step, a protective earth conductor can be brought directly into contact with the device housing when mounting the device connection system in the insertion opening of the device housing.
2. The protective earth conductor contacting system according to claim 1, characterized in that the protective earth conductor contact (11) is designed as a blade receptacle.
3. The protective earth conductor contacting system according to claim 1, characterized in that the protective earth conductor contact (11) is designed as a power timer.
4. The protective earth conductor contacting system according to claim 1, characterized in that the protective earth conductor connection clip (10) is disposed in the same plane as the insertion opening (38) at the device body (5) or is disposed at an angle relative to the insertion opening plane.
5. The protective earth conductor contacting system according to claim 1, characterized in that the device connection system with a three-conductor device connection line (3) is comprised of a plug housing (24) and a socket (25), wherein the protective earth conductor connection clip (34) or a protective earth conductor plug contact (28a) are designed with such a length and/or position relative to plug contacts (28) that, when separating the socket (25) from the plug housing (24), the protective earth conductor connection clip (34) is separated from the socket (25) after the current-carrying plug contacts (28) of the plug housing (24), or the protective earth conductor plug contact (28a) is separated from the socket after line connection contacts designed as a power timer (29).
6. The protective earth conductor contacting system according to claims 1 to 4, characterized in that the device connection system is designed as a connection terminal (4) with a device connection line (3) with more than three conductors and can be pushed into the insertion opening (38) of the device housing (5), wherein the protective earth conductor connection contact (11) is disposed on the front side of the connection terminal (4) and an insertion guide (12) is disposed underneath the insertion plane of the protective earth conductor connection contact (11), and that latching lugs (13), which engage behind the housing wall of the device housing (5), are formed on the latching side of the connection terminal (4) opposite the front side.
7. The protective earth conductor contacting system according to claims 1 to 5, characterized in that the device connection system with the three-conductor device connection line (3) is formed by the socket (25) and the plug housing (24), wherein the plug housing (24) can be mounted in the insertion opening (38) of the device housing (5) from the outer side of the device or from the interior space of the device and locked in place by means of latching lugs (40), and the protective earth connection contact (35) is disposed on the socket (25) or within the socket (25).
8. The protective earth conductor contacting system according to claim 5, characterized in that the device connection system is fastened in the device housing (5) by means of an installation and position locking device, which consists of a collar formed on the outside (26), a collar formed on the inside (37) or/and a latching lug for the plug formed on the outside (40).
9. The protective earth conductor contacting system according to claim 6 or 7, characterized in that a strain relief (21) for the device connection line (3) can be implemented by means of force-fit and form-fit elements.
10. The protective earth conductor contacting system according to one of the claims 5 to 7, characterized in that a conductive connection between the phases of the device connection line (3) and an internal wiring (31) of the device can be implemented by bridges (20).

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