EP3245692B1 - Electrical connector with a compensation unit - Google Patents

Description

The invention relates to a connector part according to the preamble of claim 1.

Such a connector part comprises a plug housing which has at least one plug-in portion, which can be connected in a plug-in direction with a mating connector part for electrically contacting the connector part with the mating connector part.

Such a connector part may be formed, for example, as a charging connector for electrically charging a battery of an electric vehicle. In this case, the connector part can be connected, for example via an electrical lead to a charging station and plugged into a charging socket of an electric vehicle, so that when connected connector part charging currents can be transferred from the charging station to the electric vehicle to charge in this way, the battery of the electric vehicle.

Fully automatic or semi-automatic charging devices are increasingly being used today for charging electric vehicles. In such charging devices, the connector part is not manually attached to an associated mating connector part (on the side of the electric vehicle), but the connector part is automatically approximated using an electromechanical assembly the mating connector part and put in mating with the mating connector part into engagement.

Such fully automatic or semi-automatic charging devices require that the position of the mating connector part on the vehicle with sufficient accuracy, for example, using an optical sensor is detected so that the connector part can be approximated in an automatic manner to the mating connector part and engaged with the mating connector part. However, such a position detection is possible only with limited accuracy. In addition, an axle detection for axially parallel attachment of the connector part to the associated mating connector part is difficult. However, if an attachment of a connector part to an associated mating connector part leads to a deviation of the axes of the connector part and the mating connector part from each other, this can lead to contacts of the connector part and the mating connector part under a lateral offset or under a Angular offset can be attached to each other, which can lead to tilting of the connector part to the mating connector part and thus to considerable loads on the connector part and the mating connector part and in particular also on their electrical contacts.

Such loads can also occur when there is a change in position of the vehicle relative to the charging station during a charging process, which may be associated with a change in position of the connector part relative to the mating connector part. Such changes in position may occur, for example, during loading and unloading of the vehicle and an associated lowering or raising of the vehicle.

There is thus a need for a connector part which permits angular and position deviations relative to a mating connector part to a certain extent, but which at the same time can be engaged securely and reliably for electrical contacting with an associated mating connector part.

At one of the DE 10 2010 035 868 B3 known connector part plug contacts are added to a floating contact carrier. In addition, the contact carrier is arranged floating on a housing, so that position and angle deviations can be compensated for a plug-in connection with a mating connector part.

The features of the preamble of claim 1 are known from GB 2 373 378 A and the GB 2 360 642 A previously known.

Object of the present invention is to provide a connector part available that enables a simple, cost-effective way a reliable compensation of position and / or angular deviations from a desired position and a desired angle when attaching to an associated mating connector part.

This object is achieved by an article having the features of claim 1. Accordingly, the connector part has a arranged on the plug housing compensation device, which has a housing, a connected to the plug housing, arranged on the housing support member and a support member with respect to the housing biasing spring element, wherein the support member with elastic deformation of the spring element relative to the housing is movable.

The connector part thus has a plug housing and arranged on the plug housing compensation device. The plug housing is used for plug-in connection with an associated mating connector part and for this purpose has one or more plug-in sections, at which, for example, electrical contacts for electrical contacting with associated mating contacts can be arranged on the side of the mating connector part. In contrast, the compensation device is used to compensate for deviations in the position and / or the angle at which the connector part is attached to the associated mating connector part, compared to a desired position and a desired angle. In general, the connector part is to be set with its plug housing in a plug-in direction to the mating connector part, this (only) in a defined (desired) position at a defined (nominal) angle, namely aligned with the mating connector part, is possible. If, when applying the connector part to the mating connector part, there are deviations from this desired position and from this target angle, then these deviations can be compensated for by the compensation device.

This takes place under elastic deformation of the spring element, via which the carrier element arranged on the housing is pretensioned with respect to the housing. With the housing, for example, a suitable holding device can be connected, via which the connector part moves in an electromechanical manner and can be approximated to the mating connector part. In contrast, the plug housing of the connector part is connected to the carrier element. If it comes when attaching the plug housing to the mating connector part to deviations from the desired position or the desired angle, the support member connected to the plug housing can move relative to the housing, so that such deviations can be compensated and there is no tilting of the Plug housing comes with the mating connector part and the loads are reduced in particular to the electrical contacts of the connector part and the mating connector part.

The carrier element is arranged with a disc-shaped base portion within an interior of the housing of the compensation device and thus enclosed by the housing. In this case, for example, a pin element can extend from the base section in the direction of the plug-in housing, wherein this pin element engages through an opening in the housing of the compensation device and is connected to the plug-in housing at an end remote from the base section of the carrier element. About the base portion, the support member is thus held within the housing of the balancing device and thereby over the Spring element biased relative to the housing. If the position of the plug housing changes relative to the housing of the compensation device, then the base section of the support element moves within the housing, which is accompanied by a deformation of the spring element within the housing.

So that the carrier element can move with its base portion within the housing, the opening of the housing, which is penetrated by the pin element of the carrier element, preferably larger than the lateral dimensions of the pin member, so that the pin member can move transversely to the insertion within the opening ,

The carrier element is preferably fixed against rotation on the spring element. The carrier element is thus held in a defined position on the spring element and positioned via the spring element in the housing. Due to the carrier element biasing the housing relative to the spring element, the carrier element is held in a substantially non-deflected position relative to the housing when the connector part is not engaged with an associated mating connector part.

The housing may, for example, be made in two parts from two housing parts to be attached to one another. On one of these housing parts, for example, in the direction of the plug-in direction in the interior of the housing projecting dome is formed, which serves to attach to the connector element when attaching the connector part to an associated mating connector part on the support member to sufficient insertion forces on the support member and on the plug housing for plug-in connection with the mating connector part to transmit.

In a non-deflected position in this case the dome is advantageously spaced from the carrier element and thus is not in contact with the carrier element. If the connector part is attached to an associated mating connector part, then the spring element is compressed axially along the insertion direction, resulting in that the dome comes into contact with a bearing surface of the support member and thus axial forces can be introduced into the support member. A holding device, which is connected to the housing of the compensating device and introduces insertion forces into the housing of the compensating device, can thus press axially upon contact of the dome on the bearing surface of the carrier element on the carrier element and thus the plug housing, which is connected to the carrier element, bring into engagement with the associated mating connector part.

In an advantageous embodiment, the dome has an abutment surface which is designed in the shape of a spherical cap and which is to be brought into contact with the bearing surface of the carrier element. If the bearing surface of the carrier element also has a spherical cap shape, then the dome and the bearing surface of the carrier element together form a sliding bearing which enables pivoting of the carrier element relative to the housing while slidingly guiding the dome resting against the carrier element.

It may be advantageous that the bearing surface of the support element and the contact surface of the dome, which are both formed kugelkalottenförmig, have different radii. If the radius of the spherical cap bearing surface of the dome is smaller than the radius of the spherical cap bearing surface of the support member, the dome and the support member can pivot to each other and also laterally (transversely to the plug) are offset from each other, so that in a favorable manner position and angle deviations under investment the dome of the housing on the bearing surface of the support member and thus under axial force transmission from the housing of the compensating device can be compensated for the plug housing.

The spring element may for example be made of plastic, for example a highly elastic elastomer. The spring element may, for example, have an annular basic shape and extend around the insertion direction in the interior of the housing of the compensation device. About the spring element, the support member may be biased in particular opposite to the insertion and transverse to the insertion relative to the housing, so that the support member against the insertion towards the direction of insertion of a bottom of the housing axially approximated dome and also laterally (transverse to the insertion) in the housing can be displaced under deformation of the spring element.

The support element is preferably held positively on the spring element. For this purpose, the spring element, for example, have a receiving portion which is annular and to which the carrier element can be attached, for example, with its base portion. In this case, for example, a plurality of spring sections may extend in the manner of spring lips from this receiving section, wherein these spring sections extend radially, for example Insertion direction and axially along the insertion direction of the receiving portion extend and produce an elastic connection of the support member with the housing of the compensation device.

For example, in a first embodiment, the spring portions may extend annularly around the receiving portion.

It is also conceivable and possible in its second embodiment but also that the spring sections are interrupted in the manner of segments in the circumferential direction to the insertion direction and thus form no closed rings.

Fig. 1A

eine perspektivische Ansicht eines Steckverbinderteils;

Fig. 1B

eine andere perspektivische Ansicht des Steckverbinderteils, zusammen mit einem Gegensteckverbinderteil, mit dem das Steckverbinderteil in einer Einsteckrichtung in Eingriff zu bringen ist;

Fig. 2A

eine Ansicht des Steckverbinderteils von hinten;

Fig. 2B

eine Seitenansicht des Steckverbinderteils;

Fig. 2C

eine Ansicht des Steckverbinderteils von vorne;

Fig. 3A

eine perspektivische Explosionsansicht einer Ausgleichseinrichtung des Steckverbinderteils;

Fig. 3B

eine andere perspektivische Ansicht der Ausgleichseinrichtung;

Fig. 4

eine Schnittansicht durch die Ausgleichseinrichtung gemäß Fig. 3A, 3B;

Fig. 5A, 5B

Ansichten eines ersten Ausführungsbeispiels eines Federelements der Ausgleichseinrichtung;

Fig. 6A, 6B

perspektivische Ansichten eines zweiten Ausführungsbeispiels eines Federelements;

Fig. 6C

eine Seitenansicht des Ausführungsbeispiels des Federelements gemäß Fig. 6A, 6B;

Fig. 6D

eine Schnittansicht entlang der Linie I-I gemäß Fig. 6A;

Fig. 7A-7E

Schnittansichten entlang der Linie II-II gemäß Fig. 2A, in unterschiedlichen Lagen der Ausgleichseinrichtung relativ zu einem Steckgehäuse des Steckverbinderteils; und

Fig. 8

eine Ansicht des Steckverbinderteils im Zusammenwirken mit einer Halteeinrichtung zum vollautomatischen oder halbautomatischen Ansetzen des Steckverbinderteils an ein zugeordnetes Gegensteckverbinderteil.

The idea underlying the invention will be explained in more detail with reference to the embodiments illustrated in the figures. Show it:

Fig. 1A

a perspective view of a connector part;

Fig. 1B

another perspective view of the connector part, together with a mating connector part with which the connector part is to be engaged in a plug-in direction;

Fig. 2A

a view of the connector part from behind;

Fig. 2B

a side view of the connector part;

Fig. 2C

a view of the connector part from the front;

Fig. 3A

an exploded perspective view of a balancing device of the connector part;

Fig. 3B

another perspective view of the balancing device;

Fig. 4

a sectional view through the balancing device according to Fig. 3A, 3B ;

Fig. 5A, 5B

Views of a first embodiment of a spring element of the compensation device;

Fig. 6A, 6B

Perspective views of a second embodiment of a spring element;

Fig. 6C

a side view of the embodiment of the spring element according to Fig. 6A, 6B ;

Fig. 6D

a sectional view taken along the line II according to Fig. 6A ;

Figs. 7A-7E

Sectional views along the line II-II according to Fig. 2A in different positions of the compensation device relative to a plug housing of the connector part; and

Fig. 8

a view of the connector part in cooperation with a holding device for fully automatic or semi-automatic attachment of the connector part to an associated mating connector part.

Fig. 1A, 1B show an embodiment of a connector part 1, which, as shown schematically in FIG Fig. 1B shown plugged with an associated mating connector part 4 in a plug-in direction E can be engaged. The connector part 1 may for example be part of a charging device and thus designed as a charging plug, which can be brought into engagement with an associated mating connector part 4 in the form of a charging socket to transmit charging currents, for example, between a charging station and an electric vehicle for charging batteries of the electric vehicle.

The connector part 1 comprises a plug housing 2 with a housing portion 20, projecting from the plug portions 21, 22 in the insertion direction E. The plug-in section 21, 22 can be inserted into an insertion opening 40 of the mating connector part 4 in the plug-in direction E in order to electrically contact electrical contact elements 210, 220 arranged in this manner on the plug-in sections 21, 22 with associated mating contact elements of the mating connector part 4.

Rearward of the plug portions 21, 22, the plug housing 2 is connected to a compensating device 3, which serves to compensate for positional deviations and angular deviations when attaching the connector part 1 to the mating connector part 4 and in this way a tilting of the Connector part 1 with its plug-in sections 21, 22 in the insertion opening 40 of the mating connector part 4 to prevent and reduce loads especially on the contact elements 210, 220.

For example, as shown schematically in FIG. 9, the compensating device 3 can act on an electromechanical holding device 5, which is connected via a connecting element 302 to a housing 30, 31 of the compensating device 3 and serves to automatically and mechanically control the connector part 1 Way to the mating connector part 4 to set and to bring this into engagement.

Fig. 2A to 2C show a back view ( Fig. 2A ), a side view ( Fig. 2B ) and a front view ( Fig. 2C ) of the connector part 1. As in particular from Fig. 2B can be seen, the compensation device 3 via a pin member 332 of a support member (to be described in detail below) connected to the housing portion 20 of the plug housing 2, wherein the position of the pin member 332 and above the plug housing 2 relative to the housing 30, 31 of the Compensation device 3 is variable and in this way deviations from a desired position and a desired angle when attaching the connector part 1 can be compensated to an associated mating connector part 4.

Fig. 3A, 3B show perspective exploded views of the balancer 3, while Fig. 4 a sectional view taken along the line II-II according to Fig. 2A represents the balancing device 3. The compensation device 3 has a housing which is formed by housing parts 30, 31, which in the assembled state surround an interior space 310. A first housing part 30 in this case carries the connecting element 302 for connection to an (external) holding device 5, as shown schematically in FIG. 9. A second housing part 31 faces the plug housing 2 and in the assembled state is firmly connected to the first housing part 30.

In the interior 310 of the housing 30, 31, a spring element 32 is arranged, which is connected to a base portion 330 of a support member 33 and the support member 33 relative to the housing 30, 31 biases. The spring element 32 has an annular receiving portion 320, in which the carrier element 33 is inserted with its base portion 330, wherein form-fitting elements 334 in the form of projections on the base portion 330 of the support member 33 in Positive locking elements 325 engage in the form of recesses on the receiving portion 320 of the spring element 32 and in this way the support member 33 rotationally fixed to the spring element 32.

Of the base portion 330 of the support member 33 is on a side facing away from the spring member 32, a pin member 332, which passes through an opening 311 on the second housing part 31 and is connected via a connecting portion 333 fixed to the housing portion 20 of the plug housing 2.

On the inside of the first housing part 30, a dome 300 is formed, which projects in the direction of the insertion direction of the housing part 30 in the direction of the support member 33. The dome 300 has, on a side facing the carrier element 33, a contact surface 301 with a spherical cap shape which faces a likewise spherical cap bearing surface 331 on a side of the carrier element 33 facing the dome 300 and is designed to engage with the bearing surface 331 when the plug connector part 1 is inserted to get into the mating connector part 4 in Appendix.

As seen from the sectional view according to Fig. 4 can be seen in a non-deflected initial position, the support member 33 via the spring member 32 in a biased manner in the interior space 310 between the housing parts 30, 31 held. In this initial position, the dome 300 with its contact surface 301 is axially spaced along the insertion direction E of the bearing surface 331, so that the dome 300 is not in contact with the carrier element 33.

As also from the sectional view according to Fig. 4 can be seen, the spherical cap-shaped contact surface 301 of the dome 300 and the spherical cap-shaped bearing surface 331 of the support member 33 different radii R1, R2. The radius R1 of the contact surface 301 is in this case smaller than the radius R2 of the bearing surface 331. This allows, as will be described below, a pivoting of the support member 33 relative to the dome 300 within the housing 30, 31 and also a lateral displacement transverse to the insertion direction E.

The spring element 32 is resilient and made for example of a plastic, in particular an elastomer. Different embodiments of the spring element 32 are conceivable and possible.

In a first embodiment, shown in FIG Fig. 5A, 5B , The spring element has an annular basic shape in which segmented spring sections 321-324 of the annular receiving section 320 extend in the manner of tabs. The spring sections 321-324 extend radially to the insertion direction E (spring sections 321, 322) or axially to the insertion direction E (spring sections 323, 324). About the spring portions 321-324, the spring element 32 is held within the housing 30, 31 of the balancing device 3 by the spring portions 321-324 in abutment with the circumferential housing walls of the housing 30, 31 are.

Via recesses 326 in two of the spring sections 321, the spring element 32 can also be positively fixed within the housing 30, 31 and thus rotatably held by the insertion direction E in the housing 30, 31.

In another, in Figs. 6A-6D illustrated embodiment, the spring element 32 is configured with annular spring portions 321-324 which surround the annular receiving portion 320 circumferentially and are closed in the circumferential direction to the insertion direction E. Again, the spring portions 321-324 extend substantially radially to the insertion direction E (spring portions 321, 322) or axially to the insertion direction E (spring portions 323, 324).

Also, the spring element 32 according to the embodiment according to Figs. 6A-6D can be defined via recesses 326 in the spring portion 321 positively within the housing 30, 31 of the balancing device 3 and thus rotatably held in the housing 30, 31.

The compensation device 3 is, as I said, to compensate for deviations from a desired position and a desired angle when attaching the connector part 1 to an associated mating connector part 4. How this is done in accordance with the sectional views Figs. 7A to 7E illustrated.

In a starting position prior to attachment of the connector part 1 to the associated mating connector part 4, the support member 33 is with its pin member 332 in an approximately central position at the opening 311 of the housing part 31 of the balancer 3. About the spring element 32, the support member 33 and about the with the support member 33 firmly connected plug housing 2 in position to the housing 30, 31 of the balancing device 3 held such that longitudinal axes L. (corresponding to the rotational symmetry axes) of the support member 33 and the dome 300 are aligned.

Will the connector part 1, as in Fig. 7B represented, for example, under automatic guidance by means of a holding device 5, as this in Fig. 8 is shown, attached to a mating connector part 4, the spring element 32 is compressed in one of the insertion direction E opposite direction A, when the connector part 1 with the plug housing 2 arranged plug-in sections 21, 22 with the mating connector part 4 and build up counter forces, which are sufficient for the compression of the spring element 32. During this compression of the spring element 32, the longitudinal axes L of the carrier element 33 and the dome 300 are initially (still) aligned with each other.

If the connector part 1 is not attached in exactly correct position and at exactly the correct angle to the mating connector part 4, then the insertion of the connector part 1 with its plug sections 21, 22 in the associated mating connector part 4 causes the position of the plug housing 2 of the position of (stationary) mating connector part 4 adapts. Because only when the plug housing 2 is aligned with its plug portions 21, 22 with the mating connector part 4, an insertion into the mating connector part 4 is possible.

Because the position of the plug housing 2 thus changes upon finding with the mating connector part 4 and adjusts the mating connector part 4, the position of the plug housing 2 changes relative to the housing 30, 31 of the compensating device 3, which is held in position on the holding device 5. As a result, the plug housing 2 can move laterally in a direction B transversely to the insertion direction E relative to the housing 30, 31 ( Fig. 7C ) or in directions C, D relative to the housing 30, 31 of the balancing device 3 ( Fig. 7D, 7E ).

How out Figs. 7C-7E can be seen in these changes in position of the support member 33 in the housing 30, 31, the longitudinal axes L1, L2 of the dome 300 on the one hand and the support member 33 on the other not (more) with each other.

Because when inserting the plug-in housing 2 in the associated mating connector part 4 it comes to a bearing of the dome 300 with the bearing surface 31 of the support member 33 due to compression of the spring member 32, via the housing 30, 31 of the Compensation device 3, in which the bearing device 5 engages, sufficient insertion forces for insertion of the plug housing 2 are transmitted to the mating connector part 4. This takes place via the abutment of the abutment surface 301 of the mandrel 300 with the bearing surface 331 of the carrier element 33.

Because the contact surface 301 of the dome 300, on the one hand, and the bearing surface 331 of the carrier element 33, on the other hand, each have a spherical cap shape, the carrier element 33 can pivot relative to the dome 300, as shown in FIG Fig. 7D, 7E is shown. Because the radius R2 of the spherical-cap-shaped bearing surface 331 of the carrier element 33 is greater than the radius R1 of the spherical cap-shaped contact surface 301 of the mandrel 300, this pivoting can take place with a simultaneous lateral change in position of the carrier element 33 relative to the mandrel 300.

The lateral movement of the carrier element 33 within the housing 30, 31 is limited by the opening 311 penetrated by the pin element 332 of the carrier element 33 in the housing part 31 of the compensation device 3 Fig. 7C and 7D shown. At maximum deflection, the pin element 332 comes into contact with the border of the opening 311, so that the lateral adjustability of the carrier element 33 in the housing 30, 31 is limited.

If the plug-in housing 2 is to be pulled out of engagement with the mating connector part 4 again against the insertion direction E, tensile forces can be introduced into the housing 30, 31. As a result, the carrier element 33 comes into abutment with the housing part 31 and is pressed against this housing part 31, so that above the tensile forces are introduced into the support member 33 and transmitted to the plug housing 2. The connector part 1 can thus be reliably removed from the mating connector part 4.

In principle, a rotation of the plug housing 2 can be compensated for the insertion direction E. This is done under rotational deformation of the spring element 32, on the one hand rotatably held in the housing 30, 31 and on the other hand rotatably connected to the support member 33 and is thus subjected to torsional load of the plug housing 2 to torsion.

The change in position of the support member 33 relative to the housing 30, 31 is always under deformation of the spring member 32. Does not load (more) between the plug housing 2 and the balancing device 3, so relaxes the spring element 32 and sets the carrier element 33 in its initial position ( Fig. 7A ) within the housing 30, 31 back.

Fig. 8 schematically shows a holding device 5, which is connected via the connecting element 302 with the housing 30, 31 of the balancing device 3 and serves to attach the connector part 1 semi-automatically or fully automatically to an associated mating connector part 4. The holding device 5 can be controlled, for example via a suitable control device 50, wherein the position of the mating connector part 4, for example, sensory, for example, using optical sensors can be detected to the connector part 1 automatically approach the mating connector part 4 and with the mating connector part 4 in engagement bring.

In the embodiments described above, one or more electrical lines can be led out of the housing 2, for example, by exiting the housing 2 laterally or upwards or downwards and being moved away from the housing 2, possibly around the compensating device 3. Several lines can also escape to different sides of the housing 2.

The idea underlying the invention is not limited to the embodiments described above, but can in principle also be realized in a completely different kind of way.

In particular, the invention is not limited to use with charging plugs at charging stations or other charging devices, but can be used quite generally in connectors.

With the described compensation device a position compensation when attaching a connector part to an associated mating connector part using only a few components is possible. The balancing device can be easily and inexpensively constructed and manufactured, allows a secure and reliable attachment of a connector part to a mating connector part and can provide a balance of positional deviations of a connector part when fitting to a mating connector part in an advantageous manner.

LIST OF REFERENCE NUMBERS

1

connector part

2

plug housing

20

housing section

21, 22

plug-in section

210.220

contact elements

3

balancer

30

housing part

300

cathedral

301

contact surface

302

connecting member

31

housing part

310

inner space

311

opening

32

Elastic element

320

receiving portion

321-324

spring section

325

Form-fitting element

326

recess

33

support element

330

base section

331

storage area

332

pin element

333

connecting portion

334

Form-fitting element

4

Mating connector part

40

insertion

5

holder

50

control device

A-D

direction

e

insertion

L, L1, L2

longitudinal axis

R1, R2

radius

Claims (13)

1. Plug-in connector part (1) comprising a plug-in housing (20) which has at least one plug-in section (20, 21) which, in a manner plugged-in in an insertion direction (E), can be connected to a mating plug-in connector part (4) for the purpose of electrically contact-connecting the plug-in connector part (1) to the mating plug-in connector part (4), and has a compensating device (3) which is arranged on the plug-in housing (2) and has a housing (30, 31), a carrier element (33) which is connected to the plug-in housing (20) and is arranged on the housing (30, 31), and a spring element (32) which prestresses the carrier element (33) in relation to the housing (30, 31), wherein the carrier element (33) can be moved relative to the housing (30, 31) with elastic deformation of the spring element (32), wherein the carrier element (33), by way of a base section (330), is held in an interior (310) of the housing (30, 31), characterized in that the carrier element (33) has a pin element (332) which is arranged on the base section (330) and, by way of the pin element (332), passes through an opening (311) of the housing (30, 31), wherein the pin element (332) can be moved transversely to the insertion direction (E) in the opening (311).
2. Plug-in connector part (1) according to Claim 1, characterized in that the carrier element (33) is secured to the spring element (33) in a rotationally fixed manner.
3. Plug-in connector part (1) according to Claim 1 or 2, characterized in that the housing (30, 31), on a housing part (30), has a dome (300) which protrudes in the direction of the insertion direction (E) and, with elastic deformation of the spring element (32), can be brought into contact with a bearing face (331) of the carrier element (33) for the purpose of transmitting force from the housing (30, 31) onto the carrier element (33) in the insertion direction (E).
4. Plug-in connector part (1) according to Claim 3, characterized in that the dome (300) has a spherical cap-like contact face (301).
5. Plug-in connector part (1) according to Claim 3 or 4, characterized in that the bearing face (331) of the carrier element (33) is of spherical-cap like form.
6. Plug-in connector part (1) according to Claim 5, characterized in that the spherical cap-like contact face (301) of the dome (300) has a smaller radius (R1) than the spherical cap-like bearing face (331) of the carrier element (33).
7. Plug-in connector part (1) according to one of the preceding claims, characterized in that the spring element (32) is manufactured from an elastomer.
8. Plug-in connector part (1) according to one of the preceding claims, characterized in that the spring element (32) prestresses the carrier element (33) counter to the insertion direction (E) and transversely to the insertion direction (E) in relation to the housing (30, 31).
9. Plug-in connector part (1) according to one of the preceding claims, characterized in that the spring element (33) has a receiving section (320) for receiving the carrier element (33) in an interlocking manner.
10. Plug-in connector part (1) according to Claim 9, characterized in that the spring element (32) has a plurality of spring sections (321-24) which project axially along the insertion direction (E) and/or radially to the insertion direction (E) from the receiving section (320).
11. Plug-in connector part (1) according to Claim 10, characterized in that the spring sections (321-324) extend in an annular manner around the insertion direction (E).
12. Plug-in connector part (1) according to Claim 10, characterized in that the spring sections (321-324) are interrupted in the circumferential direction around the insertion direction (E).
13. Plug-in connector part (1) according to one of the preceding claims, characterized in that the housing (30, 31) of the compensating device (3) can be connected to a holding device (5) for automatically positioning the plug-in connector part (1).

Images