CN113383466B

CN113383466B - Electrical plug connector

Info

Publication number: CN113383466B
Application number: CN201980090734.4A
Authority: CN
Inventors: D.马兹
Original assignee: Remalli Plante Ltd And Lianghe Co
Current assignee: Remalli Plante Ltd And Lianghe Co
Priority date: 2019-02-12
Filing date: 2019-12-10
Publication date: 2023-07-11
Anticipated expiration: 2039-12-10
Also published as: WO2020164778A1; EP3925035A1; CN113383466A

Abstract

An electrical plug connector (100) in which the plug auxiliary contact means (12, 13) and the socket auxiliary contact means (25, 26) comprise a plurality of electrical conductors.

Description

Electrical plug connector

Technical Field

The invention relates to an electrical plug connector having a plug, which comprises a plug housing having a plug contact receptacle and a plug socket, wherein the plug contact receptacle comprises a plug contact receptacle for receiving a main contact pin and a plug additional receptacle for receiving a plug auxiliary contact device, respectively, and the plug socket surrounds the main contact pin and the auxiliary contact device; the electrical plug connector also has a socket comprising a socket housing having a socket contact receiving part and a socket pocket, wherein the socket contact receiving part comprises a socket contact receiving portion for receiving one main contact sleeve and a socket additional receiving portion for receiving one socket auxiliary contact device, respectively, and the socket pocket surrounds the main contact sleeve and the socket auxiliary contact device.

Background

Such an electrical plug connector is known, for example, from DE 296 12 378u 1. It is used in particular for establishing an electrical connection between a battery of an electric land vehicle, such as a forklift or a motor vehicle, and a control or regulation device for driving the electric land vehicle or the motor vehicle. Furthermore, such electrical plug connectors are used to establish an electrical connection between such a battery and its charging device. The main contact pin and the main contact sleeve are used to establish an electrical connection for transmitting charging or operating current, and the auxiliary contact device is used to establish an electrical connection for an electrical line, which is used, for example, for transmitting signals between a charging station or a consumer and a battery.

As the technical complexity of charging stations, batteries and electrical appliances increases, so does the amount of signals and data exchanged per unit time via the electrical plug connectors.

Disclosure of Invention

The object of the present invention is therefore to develop an electrical plug connector of the above-mentioned type which is suitable for transmitting a greater amount of signals or data, while maintaining a constant simple operability and a constant robustness.

To this end the invention proposes an electrical plug connector,

having a plug comprising a plug housing having a plug contact receptacle and a plug socket, wherein the plug contact receptacle comprises a plug contact receptacle for receiving a main contact pin and a plug additional receptacle for receiving a plug auxiliary contact device, respectively, and the plug socket surrounds the main contact pin and the plug auxiliary contact device; and having a socket comprising a socket housing having a socket contact receiving member and a socket pocket, wherein the socket contact receiving member comprises a socket contact receiving portion for receiving one main contact sleeve and a socket additional receiving portion for receiving one socket auxiliary contact device, respectively, and the socket pocket surrounds the main contact sleeve and the socket auxiliary contact device, wherein the plug auxiliary contact device and the socket auxiliary contact device comprise a plurality of electrical conductors.

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

In a preferred embodiment of the electrical plug connector, the plug contact receptacle comprises exactly two plug-in receptacles and the socket contact receptacle comprises exactly two socket-in receptacles. The electrical plug connector according to the invention is designed in this respect in exactly the same way as the conventional electrical plug connector described above, so that conventional plugs and sockets can be used unchanged.

Particularly preferred is a development of the electrical plug connector in which at least one, preferably both, of the plug-auxiliary contact arrangement and the socket-auxiliary contact arrangement comprises a plug-auxiliary contact adapter or a socket-auxiliary contact adapter, respectively, which has an adapter projection, which is respectively received by one of the plug-additional receptacles or one of the socket-additional receptacles and comprises a portion of the conductor wire, respectively. By means of the plug-and socket-auxiliary contact adapters, a multi-conductor plug-and socket-auxiliary contact arrangement can be provided for the plug-and socket-contact receptacles in a very simple manner. Instead of the current monopolar plug-and socket-auxiliary contact arrangements, only the plug-and socket-auxiliary contact adapters must be installed for this purpose by inserting the adapter projections into the plug-and socket-additional receptacles. By providing such a plug-and socket-auxiliary contact adapter, it is even possible to retrofit existing electrical plug connectors of the above-mentioned conventional type by replacing the monopolar plug-and socket-auxiliary contact arrangements with corresponding auxiliary contact adapters.

The plug-and socket-attachment receptacles, which are currently used for receiving the auxiliary contact devices of the single pole and are surrounded by the plug socket or socket, have the advantage that the auxiliary contact devices for the multiple poles do not increase in volume with an increase in volume of the electrical plug connector, whereas for example the "piggyback" solution, in which the additional auxiliary contact devices are fastened externally to the plug housing and socket housing, has an increase in volume. Such a plug connector is known, for example, from DE 102005,037 864a 1.

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 connecting piece, which comprises all the wires. In this preferred embodiment, the wires of the adapter extension are collected in a single connection piece. This makes it significantly easier to integrate the electrical plug connector according to the invention into a multipolar signal or data transmission circuit, since the plug and the socket each only have to be connected to a single multi-conductor cable, which must each be provided with a connection device adapted to the corresponding connection piece.

In a particularly preferred development of the electrical plug connector according to the invention, for at least one, preferably both, of the plug-auxiliary contact adapter and the socket-auxiliary contact adapter, the adapter projections are integrally formed on the connecting piece and extend therefrom approximately parallel to one another. The operability of the respective contact adapter is thus significantly simplified, with the measure that the contact adapter can be installed in a single working step, for example by inserting the adapter extension into a respective additional receptacle of the respective contact receptacle.

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

The connector of the plug-auxiliary contact adapter or the socket-auxiliary contact adapter particularly preferably has means for stressing the connected cable.

The means for relieving stress particularly preferably comprise a thread with which a mating thread of an electrical connection means provided on the cable can engage. For example, an external thread is provided on the connection and the electrical connection means comprise a lock nut which can be screwed onto said external thread.

In a further preferred embodiment of the plug connector according to the invention, means are provided for fixing the plug auxiliary contact adapter in the plug-in add-on receptacle and/or for fixing the socket auxiliary contact adapter in the socket add-on receptacle. Thanks to the mechanism, the respective auxiliary contact adapter is prevented from possibly undesirably moving, for example, when the plug and the socket are mated, which may hamper the contact between the plug auxiliary contact device and the socket auxiliary contact device.

The means for securing preferably comprise a securing slot or a securing projection on at least one adapter projection and a housing projection on the housing which engages in the securing slot or a housing slot into which the securing projection engages.

In a further preferred embodiment of the plug connector according to the invention, the cable comprising all electrical conductors is passed through a hole of the connecting piece having an inner circumferential surface. The cable ends in the connector. The wires are distributed to the two adapter extensions.

The cable may have a preassembled length, for example, comparable to the length of the cable connected to the main contact pin or the main contact sleeve.

The cable passing through the aperture preferably includes a housing having an outer peripheral surface.

In a particularly preferred embodiment, the outer circumferential surface of the housing is connected to the inner circumferential surface of the bore in a material-fusing manner. This achieves a particularly reliable fixing of the cable in the bore of the connector and thus provides a particularly reliable stress relief.

In terms of manufacturing technology and in order to achieve a particularly durable material fusion connection, it is particularly advantageous if the material fusion connection is formed by coating the cable with the material of the connection piece, as is preferred.

Drawings

In the drawings, an embodiment of an electrical plug connector according to the invention is schematically shown. The drawings show:

FIG. 1 shows in a first perspective view one embodiment of an electrical plug connector in which a plug and a receptacle are plugged together;

fig. 2 shows the same embodiment in another perspective view, wherein the plug and the socket are separated from each other;

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

fig. 4 shows a cross-section according to section IV-IV shown in fig. 3 of the same embodiment of the electrical plug connector in a plugged together state of the plug and the socket;

fig. 5 is a sectional view of the same section, but with the plug and the receptacle in a state of being separated from each other;

fig. 6 shows a first embodiment of a socket auxiliary contact adapter in a first perspective view;

fig. 7 shows the same receptacle auxiliary contact adapter in a second perspective view;

fig. 8 shows the same receptacle auxiliary contact adapter in top view;

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

fig. 10 shows the same plug auxiliary contact adapter in a second perspective view;

fig. 11 shows the same plug auxiliary contact adapter in a top view;

fig. 12 shows a second embodiment of a receptacle auxiliary contact adapter in a perspective view; and

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

Detailed Description

The embodiment of the electrical plug connector shown in the drawings, hereinafter referred to as "plug connector 100", comprises a plug 1 and a socket 2. The plug 1 comprises a plug housing 3, the plug housing 3 having a plug contact receptacle 4 and a plug socket 5.

The plug contact holder 4 comprises contact holders 6, 7 for accommodating a main contact pin 8, 9, respectively, and a plug-attachment holder for accommodating a plug-

auxiliary contact device

12, 13, respectively.

As can be seen in particular in fig. 2, the plug socket 5 surrounds the main contact pins 8, 9 and the plug

auxiliary contact devices

12, 13. Within the space enclosed by the plug socket 5, a plug coding pin 14a is arranged, with which the plug 1 is coded, for example, in accordance with the voltage applied to the main contact pins 8, 9.

The plug contact holder 4 and the plug socket 5 are produced in one piece by means of a plastic injection process, wherein the end regions of the main contact pins 8, 9 and the

cables

8a, 9a fastened thereto are also covered. On the plug contact holder 4, a holder 15 for a nut is provided, into which a screw, not shown in the figures, can be screwed to fix a handle, also not shown.

The socket 2 comprises a socket housing 16, the socket housing 16 having socket contact receptacles 17 and socket sockets 18. The socket contact receiving member in turn comprises two socket additional receiving

portions

23, 24 for receiving one

main contact sleeve

21, 22, respectively, and for receiving one socket

auxiliary contact device

25, 26, respectively. A socket coding pin 14b is provided, with which socket coding pin 14b the socket 2 is coded, for example, in accordance with the voltage to be applied to the

main contact sleeves

21, 22. The plug and the socket can be plugged together only if the codes are identical. Otherwise the plugging process is blocked by the plug coding pin and the socket coding pin.

In a manner corresponding to the plug contact receptacles 4 and plug sockets 5, the socket contact receptacles 17 and socket sockets 28 are also produced in one piece by means of a plastic injection process, wherein the end regions of the

main contact sleeves

21, 22 and the

cables

21a, 22a fastened thereto are also covered. The receptacle contact receiving member 17 is provided with a receiving portion 27 for receiving a nut, not shown, to fix a handle, not shown.

Obviously, the plug socket 5 and the socket 18, the main contact pins 8, 9 and the

main contact sleeves

21, 22 and the plug

auxiliary contact devices

12, 13 and the socket

auxiliary contact devices

25, 26 are mutually adapted so that the plug and the socket can be sleeved in the case that the main contact and the auxiliary contact are simultaneously contacted.

As shown in fig. 6 to 8 and 12, in the embodiment of the plug connector 100 shown in the figures, the socket auxiliary contact means 25, 26 are formed by a socket auxiliary contact adapter 28 having

adapter projections

29, 30 which are each accommodated by one socket

additional accommodation

23, 24. As can be seen in fig. 7 and 12, each

adapter extension

29, 30 comprises a plurality of electrical conductors 31, in the embodiment shown five conductors 31 each. Thus, each receptacle auxiliary contact device is multipolar, in the embodiment shown being constructed as five-pole. It can be seen that the ends of the wires are configured as sleeves.

As can also be seen from fig. 6 to 8, which show a first embodiment of the socket auxiliary contact adapter 28, the

adapter extensions

29, 30 are molded onto the connecting piece 32 of the socket auxiliary contact adapter 28. All wires 31 are led to the connection 32, so that the electrical connection of all wires to a cable of the same number of wires can be achieved by a single electrical connection means, not shown in the figures.

In order to prevent the electrical connection means from undesirably disengaging from the connection piece 32, means 33 are provided for stress relief of the cable connected by means of the electrical connection means not shown in the figures. The member 33 comprises an external thread 34, for example an internal thread provided on a lock nut of an electrical connection device not shown in the figures, which can engage with the external thread 34.

As can be seen in fig. 12, which shows a second embodiment of the receptacle auxiliary contact adapter 28, the connector 32 of the receptacle auxiliary contact adapter 28 has an aperture 54, through which the cable 50 passes. The connector includes all of the electrical conductors 31. The electrical conductors are distributed in the connecting piece 32 to the two

extensions

29, 30. The cable 50 has an outer circumferential surface 52, which is connected to an inner circumferential surface of the bore 54, which is not shown in the drawing, in a material-fusing manner. During the manufacture of the receptacle auxiliary contact adapter, a material fusion connection is achieved by covering the cable with the material of the connecting piece 32, the plastic material.

In both embodiments shown in fig. 6 to 8 and 12, means 35 are provided for securing the socket auxiliary contact adapter 28 in the socket contact holder 17. The means 35 comprise, on the sides of the

adapter extensions

29, 30 facing one another, a

fastening slot

36, 37, respectively, into which the housing projection 38 engages and thus locks the socket auxiliary contact adapter 28 against displacement in the socket

additional receptacles

23, 24.

Finally, as shown in fig. 9 to 11 and 13, in the exemplary embodiment of the plug connector 100 shown in the figures, the plug-

auxiliary contact arrangements

12, 13 are formed by plug-auxiliary contact adapters 39, which plug-auxiliary contact adapters 39 have

adapter projections

40, 41, which are each accommodated by a plug-

additional accommodation

10, 11. As can be seen in fig. 10 and 13, each

adapter extension

40, 41 includes a plurality of electrical conductors 42, in the exemplary embodiment shown, five conductors 42 each. Each plug auxiliary contact device is thus constructed as multipole, in the exemplary embodiment shown as five poles. It can be seen that the ends of the wires are designed as pins so that they can be inserted into the sleeve-like configured ends of the wires 31 of the socket auxiliary contact device, respectively.

As can also be seen from fig. 9 to 11, which show a first embodiment of the plug auxiliary contact adapter 39, the

adapter extensions

40, 41 are molded onto the connecting piece 43 of the plug auxiliary contact adapter 39. All wires 42 are led to the connection 43, so that the electrical connection of all wires to a cable of the same number of wires can be achieved also by means of a single electrical connection device, which is also not shown in the figures.

In order to prevent the electrical connection means from being undesirably separated from the connection 43, a member 44 is provided for stress relief of the cable connected by means of an electrical connection means not shown in the figures. The member 44 comprises an external thread 45, for example an internal thread provided on a lock nut of an electrical connection device not shown in the figures, which can engage with the external thread 45.

As can be seen from fig. 13, which shows a second embodiment of the plug auxiliary contact adapter 39, the connecting piece 43 of the plug auxiliary contact adapter 39 has a hole 55, through which hole 55 the cable 51 passes. The connector includes all of the wires 42. The wires 42 are distributed to the two

adapter extensions

40, 41 within the connector 43. The cable 51 has an outer peripheral surface 53 which is connected to the inner peripheral surface of the hole 55 in a material-fusing manner. During manufacture, a material fusion connection is also achieved by covering the cable 51 with the material of the connection piece 43.

Finally, means 46 for fixing the plug auxiliary contact adapter 39 in the plug contact holder 4 are provided. The means 46 comprise, on the sides of the

adapter extensions

40, 41 facing one another, a

fastening slot

47, 48, respectively, into which the housing projection 49 engages and thus locks the plug-auxiliary contact adapter 39 against displacement in the plug-

attachment receptacles

10, 11.

List of reference numerals

100. Plug-in connector

1. Plug

2. Socket

3. Plug shell

4. Plug contact holder

5. Plug sleeve opening

6. 7 plug contact accommodation part

8. 9 main contact pin

8a, 9a cable

10. 11 plug additional accommodation part

12. 13 plug auxiliary contact device

14a plug coding pin

14b socket coding pin

15. Housing part

16. Socket shell

17. Socket contact receiving member

18. Socket sleeve opening

19. 20 socket contact accommodation part

21. 22 main contact sleeve

21a, 22a cable

23. 24-socket additional accommodation part

25. Auxiliary contact device for 26 socket

27. Housing part

28. Socket auxiliary contact adapter

29. 30 extension part

31. Conducting wire

32. Connecting piece

33. Component for stress relief

34. External screw thread

35. Mechanism

36. 37 fixing notch

38. Casing protruding part

39. Plug auxiliary contact adapter

40. 41 adapter extension

42. Electrical lead

43. Connecting piece

44. Mechanism

45. External screw thread

46. Mechanism

47. 48 fixing notch

49. Casing protruding part

50. 51 cable

52. 53 outer casing

54. 55 holes

E plane

Claims

1. An electrical plug connector (100),

comprising a plug (1) comprising a plug housing (3), the plug housing (3) comprising a plug contact receptacle (4) and a plug socket (5), wherein the plug contact receptacle (4) comprises plug contact receptacles (6, 7) for respectively receiving a main contact pin (8, 9) and plug additional receptacles (10, 11) for respectively receiving a plug auxiliary contact device (12, 13), and the plug socket (5) surrounds the main contact pin (8, 9) and the plug auxiliary contact device (12, 13),

and having a socket (2) comprising a socket housing (16) with a socket contact receiving member (17) and a socket opening (18), wherein the socket contact receiving member (17) comprises socket contact receiving portions (19, 20) for receiving one main contact sleeve (21, 22) respectively and socket additional receiving portions (23, 24) for receiving one socket auxiliary contact device (25, 26) respectively, and the socket opening (18) surrounds the main contact sleeve (21, 22) and the socket auxiliary contact device (25, 26),

it is characterized in that the method comprises the steps of,

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

2. An electrical plug connector according to claim 1, characterized in that the plug contact receptacle (4) comprises exactly two plug-in-addition receptacles (10, 11) and the socket contact receptacle (17) comprises exactly two socket-in-addition receptacles (23, 24).

3. Electrical plug connector according to claim 1 or 2, characterized in that at least one of the plug-auxiliary contact device (12, 13) and the socket-auxiliary contact device (25, 26) comprises a plug-auxiliary contact adapter (39) or a socket-auxiliary contact adapter (28), respectively, having an adapter projection (40, 41;29, 30), respectively, which is accommodated by a plug-additional accommodation (10, 11) or a socket-additional accommodation (23, 24), respectively, and comprises a portion of the electrical line (31, 42), respectively.

4. An electrical plug connector according to claim 3, characterized in that at least one of the plug auxiliary contact adapter (39) or the socket auxiliary contact adapter (28) has a connection (43, 32) comprising all electrical conductors (31, 42).

5. An electrical plug connector according to claim 4, characterized in that for the plug auxiliary contact adapter (39) and the socket auxiliary contact adapter (28) having the connecting pieces (43, 32), the adapter projections (40, 41;29, 30) are formed on the connecting pieces (43, 32) and extend from the connecting pieces parallel to each other.

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

7. An electrical plug connector according to claim 4 or 5, characterized in that the connection piece (43, 32) has means (44, 33) for stress relieving the connected cable.

8. An electrical plug connector according to claim 7, wherein the member comprises a thread (34), with which thread (34) a mating thread of an electrical connection means provided on the cable is engageable.

9. Electrical plug connector according to claim 4 or 5, characterized in that means (46, 35) are provided for fixing the plug-auxiliary contact adapter (39) and/or the socket-auxiliary contact adapter (28) in the plug-additional receptacle (10, 11) and/or the socket-additional receptacle (23, 24).

10. The electrical plug connector as claimed in claim 9, characterized in that the means (46, 35) for fixing comprise a fixing slot (47, 48;36, 37) or a fixing projection on the at least one adapter projection (40, 41;29, 30) and a housing projection (49, 38) which engages into the fixing slot (47, 48;36, 37) on the housing (16, 4) or a housing slot into which the fixing projection engages on the housing.

11. An electrical plug connector according to claim 4 or 5, characterized in that the cable (50, 51) comprising all electrical conductors (31, 42) is passed through a hole (54, 55) of the connecting piece (32, 43) having an inner circumferential surface.

12. The electrical plug connector according to claim 11, wherein the cable (50, 51) comprises a housing (52, 53) having an outer circumferential surface.

13. The electrical plug connector of claim 12, wherein the outer peripheral surface of the housing is material-fusion-connected to the inner peripheral surface of the bore.

14. Electrical plug connector according to claim 13, characterized in that the material fusion connection is achieved by covering the cable (50, 51) with the connecting piece (32, 43).