EP3925035A1

EP3925035A1 - Electrical plug-in connector

Info

Publication number: EP3925035A1
Application number: EP19818045.7A
Authority: EP
Inventors: Dominic März
Original assignee: REMA Lipprandt GmbH and Co KG
Current assignee: REMA Lipprandt GmbH and Co KG
Priority date: 2019-02-12
Filing date: 2019-12-10
Publication date: 2021-12-22
Also published as: CN113383466B; CN113383466A; WO2020164778A1

Abstract

The invention relates to an electrical plug-in connector (100), characterized in that the connector auxiliary contact arrangement (12, 13) and the socket auxiliary contact arrangement (25, 26) comprise a plurality of electrical wires.

Description

Electrical connector

The invention relates to an electrical connector with a plug, which comprises a plug housing with a plug contact receiving part and a plug approach, wherein the plug contact receiving part Steckerkontaktaufnah men for receiving a main contact pin and additional plug receptacles for receiving a connector auxiliary contact arrangement, and the connector extension comprises the main contact pins and the auxiliary contact arrangements surrounds, and with a socket which comprises a socket housing with a socket contact receiving part and a socket attachment, the socket contact receiving element comprising can contact receptacles for receiving a respective main contact sleeve and additional receptacles for receiving an auxiliary can contact arrangement, and the socket extension surrounds the main contact sleeves and the can auxiliary contact arrangement.

Such an electrical connector is known for example from DE 296 12 378 U1. It is used in particular to establish the electrical connection between the accumulators of electric industrial trucks such as forklifts or automobiles and control and regulating devices for the drives of the electric industrial trucks or automobiles. Furthermore, this electrical plug connector is used to establish the electrical connections between these accumulators and charging devices for the same. The main contact pins and main contact sleeves are used to establish the electrical connection to Transmission of the charging or operating current and the auxiliary contact arrangements of the electrical connection of electrical wires, which are used, for example, to transmit signals between a charging station or a consumer and the accumulator.

Due to the constantly increasing technical complexity of the charging stations, accumulators and consumers, the amount of the signals and data to be exchanged via the electrical connector per unit of time also increases.

The invention is therefore based on the object of developing an electrical connector of the type mentioned in such a way that it is suitable for transmitting a larger amount of signals or data with unchanged ease of use and unchanged robustness.

This object is achieved by an electrical connector with the features of claim 1.

According to the invention, the plug auxiliary contact arrangements and the socket auxiliary contact arrangements now comprise a plurality of wires, in other words they are designed with more poles. Surprisingly, it has been shown that even a plurality of wires, for example five wires with a cross-section sufficient for signal or data transmission in a parallel arrangement does not require more space than a conventional, single-pole auxiliary plug contact arrangement. The plurality of wires can then, for example, be used for parallel data transmission, or several components, for example a charging station, can be electrically connected to one another in parallel with several components, for example a battery arrangement. In both cases, considerably more signals or data can be transmitted per unit of time compared to a, for example, only two-pole design of the auxiliary contact arrangements.

In a preferred embodiment of the electrical connector, the plug contact receiving part comprises exactly two additional plug receptacles and the socket contact receiving part comprises exactly two additional socket receptacles. The electrical connector according to the invention is designed exactly as the Conventional electrical connectors described above, so that the conventional plugs and sockets can be used unchanged.

A further development of the electrical connector is particularly preferred in which at least one, preferably both of the plug auxiliary contact arrangements and the socket auxiliary contact arrangements comprises a plug auxiliary contact adapter or a socket auxiliary contact adapter, each of which has adapter extensions that are each received by one of the additional plug receptacles or one of the additional receptacle receptacles and one each Include part of the veins. With the help of the plug or socket auxiliary contact adapter, it is possible in a very simple manner to provide the plug and socket contact receiving parts with the multi-core plug and socket auxiliary contact arrangements. Because for this purpose only the plug and socket auxiliary contact adapters have to be mounted by introducing the adapter extensions into the plug and socket additional receptacles instead of the previously single-pole plug and socket auxiliary contact arrangements. With the provision of such plug and socket auxiliary contact adapters, it is even possible to retrofit existing electrical connectors of the above-mentioned conventional type by replacing the single-pole plug and socket auxiliary contact arrangements with the corresponding auxiliary contact adapters.

The use of the plug and socket additional receptacles, which were previously used to accommodate single-pole auxiliary contact arrangements and which are surrounded by the plug or socket attachment, for now multi-pole auxiliary contact arrangements has the further advantage that this does not increase the volume of the electrical Plug connector goes hand in hand, as is the case, for example, with "piggyback solutions", in which additional auxiliary contact arrangements are attached to the outside of plug and socket housings. Such a plug connector is known, for example, from DE 10 2005 037 864 A1.

In a particularly preferred development of the electrical plug connector according to the invention, at least one, preferably both of the plug auxiliary contact adapter and the socket auxiliary contact adapter has a connection part which includes all of the wires. In this preferred development, the wires of the adapter extensions are combined in a single connection part. This makes the integration of an electrical connector according to the invention into a multi-pole signal or data transmission circuit much easier, since the plug and the socket only need to be connected to a single, multi-core cable, which is each provided with a connection device adapted to the respective connector have to be.

In a particularly preferred development of the electrical connector according to the invention, at least one, preferably both of the plug auxiliary contact adapter and the socket auxiliary contact adapter, the adapter extensions are integrally formed on the connector and extend approximately parallel to each other from this. As a result, the handling of the respective contact adapter is considerably facilitated in that it can be mounted in a single operation, for example by pushing the adapter extensions into the corresponding additional receptacles of the corresponding contact receiving part.

In a preferred embodiment of the connector according to the invention, the connection parts of at least one, preferably both, of the auxiliary plug contact adapter and the auxiliary socket contact adapter are arranged on the side of the plug housing or the socket housing opposite the plug attachment or socket attachment. The multi-core cables connected to the plug or the socket for signal or data transmission can then be connected in a particularly space-saving manner.

The connecting part of a plug or auxiliary contact adapter particularly preferably has a measure for strain relief of the connected electrical cable.

The measure for strain relief comprises - particularly preferably - a thread with which a mating thread of the electrical connection device provided on the electrical cable can be brought into engagement. For example, an external thread is provided on the connection part and the electrical connection device comprises a union nut which can be screwed onto the external thread. In a further preferred embodiment of the electrical plug connector according to the invention, means are provided for fixing the plug auxiliary contact adapter in the additional plug receptacle and / or the auxiliary socket contact adapter in the additional receptacle receptacle. Due to these means, it is prevented that the corresponding auxiliary contact adapter can move undesirably, for example when plugging the plug and socket, which could possibly hinder contact between the plug and the socket auxiliary contact arrangements.

The means for fixing preferably comprise a fixing recess or a fixing extension on at least one adapter extension and on the housing a housing extension engaging in the fixing recess or a housing extension in which the fixing extension engages.

In a further preferred embodiment of the electrical connector, an electrical cable comprising all electrical wires is passed through a bore of the connection part having an inner jacket surface. The cable ends inside the connector. The wires are divided between the two adapter extensions.

The cable can have a pre-assembled length that corresponds, for example, to the length of cables connected to the main contact pins or to the main contact sleeves.

The cable passed through the bore preferably comprises a man tel with an outer jacket surface.

In a particularly preferred embodiment, the outer jacket surface of the jacket is materially bonded to the inner jacket surface of the bore. This creates a particularly reliable fixation of the cable in the drilling of the connector and thus a particularly secure strain relief.

In terms of production engineering and to achieve a particularly permanent material-locking connection, it is particularly advantageous if - as is preferred - the material coherent connection is effected by encapsulating the cable with the material of the connecting part.

In the drawing, exemplary embodiments of an electrical connector according to the invention are shown schematically. Show it :

1 shows an exemplary embodiment of the electrical plug connector in a first perspective view with the plug and socket plugged together;

Fig. 2 shows the same embodiment in a further perspective view, in which the plug and socket are separated from one another;

3 is a view of the mating face of the plug;

Fig. 4 is a section according to the sectional plane IV-IV shown in Figure 3 through the same embodiment of the electrical Steckverbin fenders in the mated state of plug and socket;

5 shows a section through the same sectional plane, but in the separated state of plug and socket;

6 shows a first exemplary embodiment of an auxiliary socket contact adapter in a first perspective illustration;

7 the same socket auxiliary contact adapter in a second perspective view;

8 shows the same socket auxiliary contact adapter in a plan view;

9 shows a first exemplary embodiment of a plug auxiliary contact adapter in a first perspective view;

10 the same plug auxiliary contact adapter in a second perspective view; 11 the same plug auxiliary contact adapter in a plan view;

12 shows a second exemplary embodiment of an auxiliary socket contact adapter in a perspective view, and FIG

13 shows a second exemplary embodiment of a plug auxiliary contact adapter in a perspective view.

The exemplary embodiment of the electrical plug connector shown in the drawing, hereinafter referred to as "plug connector 100", comprises a plug 1 and a socket 2. The plug 1 comprises a plug housing 3 with a plug contact receiving part 4 and a plug attachment 5.

The plug contact receiving part 4 comprises contact receptacles 6, 7 for receiving one main contact pin 8, 9 as well as additional plug receptacles for receiving one plug auxiliary contact arrangement 12, 13.

As can be seen in particular in Fig. 2, the connector extension 5 surrounds the main contact pins 8, 9 and the connector auxiliary contact arrangements 12, 13. Within the space surrounded by the connector extension 5, a connector coding pin 14a is arranged, with which the connector 1, for example, according to one of the Main contact pins 8, 9 applied electrical voltage is coded.

The plug contact receiving part 4 and the plug extension 5 are made in one piece by a plastic injection molding process, in which the main contact pins 8, 9 and end regions of attached electrical cables 8a, 9a are overmolded. On the plug contact receiving part 4, receptacles 15 are provided for nuts, into which screws, not shown in the drawing, can be screwed for fastening a handle, also not shown.

The socket 2 comprises a socket housing 16 with a socket contact receiving part 17 and a socket attachment 18. The socket contact receiving part in turn comprises socket contact receptacles 19, 20 for receiving one main contact sleeve 21, 22 and two additional socket receptacles 23, 24 each for receiving one can. Auxiliary contact arrangement 25, 26. A socket coding pin 14b is provided with which the socket 2 is coded, for example, according to a voltage that is to be applied to the main contact sleeves 21, 22. Plug and socket can only be plugged together if the codings match. Otherwise the plug-in process will be blocked by the plug and socket coding pins.

The socket contact receiving part 17 and the socket extension 28 are - in a manner corresponding to the plug contact receiving part 4 and the connector extension 5 - manufactured in one piece by a plastic injection molding process, in which the main contact sleeves 21, 22 and end areas of cables 21a, 22a attached to them are overmolded . There are receptacles 27 on the Dosenkontaktauf receiving part 17 are provided, which are used to receive nuts, not shown, for fastening a handle, not shown.

It goes without saying that plug and socket attachment 5, 18, main contact pins 8, 9 and main contact sleeves 21, 22 as well as plug auxiliary contact arrangements 12, 13 and socket auxiliary contact arrangements 25, 26 are adapted to one another in such a way that plug and socket contact with simultaneous contacting of the main and auxiliary contacts are pluggable.

As can be seen in Figs. 6 to 8 and 12, in the embodiment of the connector 100 shown in the drawing, the Dosenhilfskon tact arrangements 25, 26 formed by a socket auxiliary contact adapter 28, which has adapter extensions 29, 30, each of which is supported by an additional socket receptacle 23, 24 are included. Each of the adapter extensions 29, 30 comprises, as can be seen in FIGS. 7 and 12, a plurality of electrical wires 31, in the illustrated embodiments five wires 31 each. Each of the Dosenhilfskon contact arrangements is thus multi-pole, five-pole in the illustrated Ausführungsbeispie len . As can be seen, the ends of the wires are sleeve-shaped.

As can also be seen in FIGS. 6 to 8, which show a first exemplary embodiment of an auxiliary socket contact adapter 28, the adapter extensions 29, 30 are molded onto a connection part 32 of the auxiliary socket contact adapter 28. All Cores 31 are led to the connection part 32, so that an electrical connection of all the cores to an electrical cable having a corresponding number of cores can be achieved with a single electrical connection device, which is not shown in the drawing.

In order to prevent the electrical connection device from becoming detached from the connection part 32 in an undesired manner, a measure 33 is provided for strain relief of an electrical cable connected with the aid of the electrical connection device (not shown in the drawing). It comprises an external thread 34, with which an internal thread can be brought into engagement, for example on a union nut of the electrical connection device not shown in the drawing.

As can be seen in FIG. 12, which shows a second exemplary embodiment of a can auxiliary contact adapter 28, the connector 32 of this can auxiliary contact adapter 28 has a bore 54 through which a cable 50 is passed. It comprises all the electrical wires 31. They are divided between the two extensions 29, 30 within the connection part 32. The cable 50 has an outer jacket surface 52 which is integrally connected to the inner jacket surface of the bore 54, which cannot be recognized in the drawing. The cohesive connection is brought about by overmolding the cable with the material of the connection part 32, a plastic material, during the manufacture of the auxiliary contact adapter.

In both of the exemplary embodiments shown in FIGS. 6 to 8 and 12, means 35 are provided for fixing the auxiliary socket contact adapter 28 in the socket contact receiving part 17. They each include a fixing recess 36, 37 on facing sides of the adapter extensions 29, 30, in which a Ge housing extension 38 engages and thus locks the auxiliary contact adapter 28 against displacement in the additional socket receptacles 23, 24.

As can finally be seen in FIGS. 9 to 11 and 13, in the exemplary embodiment of the plug connector 100 shown in the drawing, the plug auxiliary contact arrangements 12, 13 are formed by a plug auxiliary contact adapter 39 which has adapter extensions 40, 41, each of which is connected by a plug connector. set recording 10, 11 are added. Each of the adapter extensions 40, 41 comprises, as can be seen in FIGS. 10 and 13, a plurality of electrical wires 42, in the illustrated embodiments five wires 42. Each of the plug auxiliary contact arrangements is thus multi-pole, five-pole in the exemplary embodiment shown. As can be seen, the ends of the wires are designed in the form of pins, in such a way that they can each be inserted into a sleeve-shaped end of the wires 31 of the auxiliary socket contact arrangements.

As can also be seen in FIGS. 9 to 11, which show a first exemplary embodiment of a plug auxiliary contact adapter 39, the adapter projections 40,

41 integrally formed on a connection part 43 of the plug auxiliary contact adapter 39. All wires 42 are led to connector 43, so that an electrical connection of all wires with a corresponding number of wires pointing, electrical cable in turn with a single electrical connection device, which is also not shown in the drawing, accomplished can be.

In order to prevent the electrical connection device from being undesirably detached from the connection part 43, a measure 44 is again provided for relieving strain on an electrical cable connected with the aid of the electrical connection device not shown in the drawing. It comprises an external thread 45 with which an internal thread provided, for example, on a union nut of the electrical connection device, not shown in the drawing, can be brought into engagement.

As can be seen in Fig. 13, which shows a second embodiment of a plug auxiliary contact adapter 39, the connector 43 of this plug auxiliary contact adapter 39 has a bore 55 through which a cable 51 is passed. It includes all of the wires 42. The wires are inside the connecting part 43

42 divided between the two adapter extensions 40, 41. The cable 51 has an outer jacket surface 53 which is firmly connected to the inner jacket surface of the bore 55. The material connection is in turn brought about by overmolding the cable 51 with the material of the connection part 43 during the manufacturing process. Finally, means 46 are again provided for fixing the plug auxiliary contact adapter 39 in the plug contact receiving part 4. They each include a fixing recess 47, 48 on mutually facing sides of the adapter extensions 40, 41, into which a housing extension 49 engages and thus locks the auxiliary connector contact adapter 39 against displacement in the additional connector receptacles 10, 11.

Reference list:

100 connectors

1 connector

2 cans

3 connector housing

4 plug contact receiving part

5 connector base

6, 7 plug contact receptacles 8, 9 main contact pins

8a, 9a cables

10, 11 additional plug receptacles

12, 13 plug auxiliary contact arrangements 14a plug coding pin

14b can coding pin

15 shots

16 socket housing

17 socket contact receiving part

18 can neck

19, 20 can contact recordings

21, 22 main contact sleeves

21a, 22a cables

23, 24 additional receptacles

25, 26 can auxiliary contact arrangements

27 shots

28 socket auxiliary contact adapter

29, 30 appendages

31 cores

32 connector

33 Measure for strain relief

34 external thread

35 means

36, 37 fixing recesses

38 Housing extension 39 Plug auxiliary contact adapter

40, 41 adapter projections

42 electrical wires

43 connector

44 means

45 external thread

46 means

47, 48 fixing recesses

49 Housing extension

50, 51 electrical cable

52, 53 coat

54, 55 bore

E level

Claims

Patent claims:

1. Electrical connector (100),

with a plug (1) comprising a plug housing (3) with a plug receptacle (4) and a plug attachment (5), the plug receptacle (4) for receiving a main contact pin (8, 9) and plug additional receptacles (10) , 11) for receiving one plug auxiliary contact arrangement (12, 13), and the plug attachment (5) surrounds the main contact pins (8, 9) and the plug auxiliary contact arrangements (12, 13), and with a socket (2) which a socket housing (16) with a socket contact receiving part (17) and a socket extension (18), the socket contact receiving part (17) socket contact receptacles (19, 20) for receiving a respective main contact sleeve (21, 22) and additional socket receptacles (23, 24) for receiving one auxiliary socket contact arrangement (25, 26) in each case, and the socket extension (18) surrounds the main contact sleeves (21, 22) and the auxiliary socket contact arrangements (25, 26),

characterized,

that the plug auxiliary contact arrangements (12, 13) and the socket auxiliary contact arrangements (25, 26) comprise a plurality of electrical wires (31, 42).

2. An electrical connector according to claim 1, characterized in that the plug contact receiving part (4) comprises exactly two plug additional receiving parts (10, 11) and the socket contact receiving part (17) exactly two Dosenzu set receptacles (23, 24).

3. Electrical connector according to claim 1 or 2, characterized in that at least one of the plug auxiliary contact arrangements (12, 13) and the socket auxiliary contact arrangements (25, 26) comprises a plug auxiliary contact adapter (39) or a socket auxiliary contact adapter (28), each of which has adapter extensions (40 , 41; 29, 30), each of which is accommodated by a plug-in additional receptacle (6, 7) or an additional socket receptacle (23, 24) and each comprise part of the electrical wires (31, 42).

4. Electrical connector according to claim 3, characterized in that at least one of the plug auxiliary contact adapter (39) and Dosenhilfskon tact adapter (28) has a connecting part (43, 32) which comprises all electrical wires (31, 42).

5. Electrical connector according to claim 4, characterized in that in that of the plug auxiliary contact adapter (39) and the socket auxiliary contact adapter (28), which has a connecting part (43, 32), the Adap terfortätze (40, 41; 29, 30) the connection part (43, 32) are integrally formed and extend from this approximately parallel to one another.

6. Electrical connector according to claim 4 or 5, characterized in that the connection part (43, 32) on the connector extension (5) or the socket extension (18) opposite side of the connector housing (3) or the socket housing (16 ) is arranged.

7. Electrical connector according to one of claims 4 to 6, characterized in that the connecting part (43, 32) has a measure for strain relief (44, 33) of a connected electrical cable.

8. An electrical connector according to claim 7, characterized in that the measure comprises a thread (34) with which a counter-thread of an electrical connection device provided on the electrical cable can be brought into engagement.

9. Electrical connector according to one of claims 4 to 8, characterized in that means (46, 35) for fixing the plug auxiliary contact adapter (39) and / or the socket auxiliary contact adapter (28) in the Steckzu set receptacles (10, 11) and / or the additional socket contact receptacles (23, 24) are provided.

10. Electrical connector according to claim 9, characterized in that the means for fixing (46, 35) on the at least one adapter extension (40, 41; 29, 30) has a fixing recess (47, 48; 36, 37) or a Fi xierfortsatz and on the housing (16, 4) one in the fixing recesses (47, 48; 36, 37) engaging housing extension (49, 38) or on the Ge housing a housing recess into which the fixing extension engages, include sen.

11. Electrical connector according to one of claims 4 to 6, characterized in that an all electrical wires (31, 42) comprehensive electrical cable (50, 51) through a bore (54, 55) of the connecting part (32, 43), the has an inner lateral surface, is passed through.

12. Electrical connector according to claim 11, characterized in that the electrical cable (50, 51) comprises a jacket (52, 53) with an outer jacket surface.

13. Electrical connector according to claim 12, characterized in that the outer surface of the jacket is cohesively connected to the inner surface of the bore Man.

14. Electrical connector according to claim 13, characterized in that the cohesive connection is effected by overmolding the cable (50, 51) with the connecting part (32, 43).