Electrical plug connector and plug connector assembly

Abstract

To provide a plug connector with high sealing properties, which is preferably particularly simple and economically manufacturable and mountable.SOLUTION: An electrical plug connector 1 comprising a plastic component 11 and a metal component 12 is at least partially accommodated in the other component in each case in one of the components 11 and 12. A sealing region 13 is formed between the plastic component and the metal component, in which the plastic component and the metal component are directly connected to each other in a force-fitting manner in a sealing region. At least one of the components has a connecting groove in the sealing region which surrounds an entire circumference of a peripheral edge and is accessible in an axial direction x. The other in each case of the components has, in the sealing region, a connecting rib which surrounds the entire circumference of the peripheral edge and which is received in the connecting groove and forms at least one pressure contact which surrounds the connecting groove and the entire circumference of the peripheral edge, by means of which the components a passage between the plastic components and the metal components is sealed, preferably a fluid-tight.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electrical plug connector having a plastic part and a metal part with a sealing area formed therein.

[0002] The present invention further relates to a plug connector assembly. [Background technology]

[0003] A wide variety of variations and configurations of electrical plug connectors are known in the prior art for a wide range of applications. Electrical plug connectors generally serve to transmit power and / or data signals to a corresponding mating plug connector.

[0004] In order to permanently and reliably prevent the ingress of moisture and impurities into the interior of the plug connector and / or from one connection interface of the plug connector to another connection interface of the plug connector, it may be necessary to provide seals between the individual components of the plug connector. Particularly high demands are made on plug connectors and their sealing, for example in the automotive sector, in particular when the plug connectors are employed in the exterior area of ​​the vehicle.

[0005] The sealing between the components of the plug connector is frequently achieved in the prior art by separate sealing elements, in particular O-rings, but also by the use of sealing coatings, as proposed for example in DE 10 20 05 13 522 A1. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] U.S. Patent No. 6,966,800 Summary of the Invention [Problem to be solved by the invention]

[0007] A further requirement, particularly in the automotive industry, is the need to be able to mass-produce plug connectors economically in general, and therefore providing a plug connector that seals is often problematic due to the high cost of materials, manufacturing and installation.

[0008] In view of the known prior art, it is an object of the present invention to provide a plug connector with a high sealing property which is preferably particularly simple and economical to manufacture and install.

[0009] In view of the known prior art, it is a further object of the present invention to provide a plug connector assembly with a high sealing quality that is preferably particularly simple and economical to manufacture and install. [Means for solving the problem]

[0010] This object is achieved with an electrical plug connector having the features set forth in claim 1 and with a plug connector assembly having the features set forth in claim 14.

[0011] The dependent claims and the features described below relate to advantageous embodiments and variants of the invention.

[0012] The electrical plug connector according to the present invention comprises a plastic part and a metal part.

[0013] The plastic and metal parts, hereinafter also referred to collectively as "parts", can in principle be any desired plug connector part of a plug connector. Thus, the plastic part can be, for example, a contact carrier for holding at least one electrical contact element, a housing part (e.g., an inner or outer housing of the plug connector), a touch-protection element, or another (electrically insulating) plug connector part. The metal part can be, for example, an electrical contact element (e.g., an electrical inner conductor contact element or an electrical outer conductor contact element), or a housing part (e.g., an inner or outer housing of the plug connector), or a different (conductive) plug connector part.

[0014] According to the invention, one of the parts (i.e. the plastic part or the metal part) is in each case at least partly housed in the other part.

[0015] It can thus be provided that the plastic part is at least partially housed in or at least partially surrounded by the metal part, or vice versa. For this purpose, in each case one of the parts can have a suitable receiving portion (e.g. a blind hole or a through-hole, for example) in which a longitudinal portion (in particular a cylindrical portion) of the other part is received in each case.

[0016] The plastic and metal parts are arranged concentrically or coaxially with respect to one another, although the centers of gravity or longitudinal / central axes of the parts can also be offset, since within the scope of the present invention it is essentially only important that one of the parts is at least partially located inside the other.

[0017] According to the present invention, a seal area is formed between the plastic part and the metal part.

[0018] This sealing area can reliably seal the passage between the plastic part and the metal part. This seal can preferably be fluid-tight (i.e., in particular for the purpose of providing a seal against gases and / or liquids). However, in exceptional cases, it is also possible within the scope of the present invention to already provide only a seal against impurities, such as dirt and dust.

[0019] According to the invention, a plastic part and a metal part are directly connected to one another in a force-fit manner in the sealing area, where at least one of the parts has a connecting groove in the sealing area that runs around the entire periphery and is accessible in the axial direction, and the other part in each case has a connecting rib in the sealing area that runs around the entire periphery and is received in the connecting groove, whereby the connecting rib forms with the connecting groove at least one pressure contact that extends around the entire periphery and seals the passage between the plastic part and the metal part.

[0020] In this way, the sealing function can be advantageously integrated into the part to be sealed. As a result, it is possible to dispense with additional sealing elements, such as O-rings, which results in saving material when manufacturing the plug connector and saving time during installation. Furthermore, spraying of a sealing coating is not necessarily required within the scope of the present invention. Therefore, the proposed plug connector can be manufactured and installed simply and cost-effectively.

[0021] In one embodiment of the invention, in particular, no separate sealing element, in particular an O-ring, may be arranged between the plastic part and the metal part.

[0022] It has been shown that the proposed method can provide a durable and mechanically robust seal. The invention is therefore particularly advantageously suitable for use in plug connectors outdoors or in places of high mechanical and thermal stress, such as in the automotive field (e.g. plug connectors for camera modules in vehicles). Further advantageous fields of use include, for example, communication plugs for mobile phone towers.

[0023] In an advantageous embodiment of the invention, the connecting groove and the connecting rib may in each case be formed on the connecting flange of the plastic part / metal part.

[0024] In a particularly advantageous embodiment of the invention, each of the two parts may have in each case one of the connecting grooves and in each case one of the connecting ribs which is received in the connecting groove of the other part.

[0025] In this way, one of the two parts can have a connecting row consisting of one of the connecting grooves and one of the connecting ribs, which can in each case be connected to a complementary connecting row consisting of one of the connecting ribs and one of the connecting grooves of the other part.

[0026] The use of connecting grooves and connecting ribs in each case or parts with connecting sequences / complementary connecting sequences can be particularly advantageous in this case, since the passage between the plastic part and the metal part in the area to be sealed or in the sealing area can be expanded compared to the minimal variant of the invention (where a single connecting groove and a single connecting rib are arranged on both sides), thereby increasing the options for sealing in the sealing area.

[0027] Accordingly, it is advantageous if at least one component, and where appropriate both components, have two or more connecting grooves and / or two or more connecting ribs, for example, two, three, four connecting grooves and / or two, three, four, or even more connecting grooves or ribs. Thus, a connecting sequence / complementary connecting sequence can have a corresponding number of connecting grooves and ribs. It is also possible to provide a connecting sequence / complementary connecting sequence consisting solely of a number of connecting grooves or a number of connecting ribs. However, the connecting grooves and the connecting ribs are preferably arranged alternately in each case within the connecting sequence / complementary connecting sequence. However, a number of connecting grooves / ribs is generally not necessarily required.

[0028] In a further development of the invention, it can in particular be provided that the coupling groove is directly adjacent to the coupling rib in the coupling sequence or in a complementary coupling sequence.

[0029] Although preferred, this is not necessary. In principle, it is also possible for the coupling grooves to be spaced apart from the next coupling rib in the coupling row or the complementary coupling row.

[0030] According to one development of the invention, the insulation displacement portion may be designed to go around the periphery at least along a line, preferably in a plane.

[0031] The pressure contact can be formed in particular between the directly opposite inner surfaces of the side walls of the connecting groove and the outer surfaces of the side walls of the connecting rib, by the inner and outer surfaces bearing directly against each other in a plane or along a line. For the pressure contact along a line, for example, one of the surfaces can be configured to have a convex or bulging, tapered, conical, frustoconical or pointed shape, or another type of protrusion. The plane-to-plane pressure contact between the inner and outer surfaces can in particular be formed between predominantly planar surfaces in each case, but also, in some cases, between complementary arched surfaces. The plane pressure contact can also, where appropriate, be formed solely by the mutual deformation of the parts caused by the forced fit.

[0032] In addition to a pressure connection or a force-fit connection between a plastic part and a metal part, it is also possible to provide a snap-fit ​​connection, for example in the form of an interfitting of two parts (for example, the interfitting of connecting ribs in connecting grooves or the interfitting of parts in completely different parts).

[0033] The insulation displacement portion is preferably designed to circumferentially extend in a plane oriented perpendicular to the longitudinal axis of the plug connector or component, preferably in a plane, although the surface can also be oriented obliquely to the longitudinal axis.

[0034] According to a development of the invention, it can be provided that a plurality of pressure contacts, preferably at least two pressure contacts, more preferably at least three pressure contacts, are distributed along the passage between the plastic part and the metal part or in the sealing area.

[0035] In principle, any number of pressure contacts can be distributed along the passage or along the sealing area to further increase the sealing properties of the plug connector through redundancy. Finally, a single pressure contact may also be sufficient.

[0036] It is also possible for a single pressure contact to extend through the entire passageway, thereby completely sealing the passageway across the plane along its course.

[0037] In a further development of the invention, the pressure contacts may be arranged laterally inside one another relative to the longitudinal axis of the plug connector. This means that at least one pressure contact may be arranged laterally inside a further pressure contact relative to the longitudinal axis of the plug connector. In simple terms, the pressure contacts may be "nested inside one another."

[0038] The pressure contacts are preferably arranged concentrically inside one another, especially in the case of pressure contacts that extend around a circle. In order to arrange the pressure contacts around a circular periphery and the pressure contacts inside one another, the diameters of the pressure contacts can preferably all be different.

[0039] However, the concentric arrangement of pressure contacts with different diameters should be understood purely as an example, since the parts of the plug connector do not necessarily have to be circular or of circular design.

[0040] It should be mentioned at this point that the definition of the pressure contacts being "located inside each other" does not exclude the pressure contacts being offset relative to each other in the longitudinal direction of the plug connector.

[0041] As an alternative to, or in addition to, the use of multiple pressure contacts arranged inside one another, a single pressure contact or multiple pressure contacts may extend or extend along a boundary surface having a serpentine or S-shaped profile in cross section.

[0042] As a development of the invention, at least one pressure contact may in each case be formed between all diametrically opposite inner surfaces or side walls of the connecting groove and the outer surfaces or side walls of the connecting rib.

[0043] In this way, on the one hand, the force-fit connection between the plastic part and the metal part can be increased, and on the other hand, the sealing can also be improved.

[0044] In an advantageous development of the invention, it can be provided that the wall thickness of the connecting rib is widened starting from its upper surface or from its free end.

[0045] Furthermore, it can be provided that the width of the connecting groove is increased starting from its groove bottom and / or is reduced starting from its front open end.

[0046] By narrowing / widening the width of the connecting groove and / or the thickness of the connecting rib, the fitting can be simplified, for example, making it easier for the fitting worker to insert the connecting rib into the connecting groove. Furthermore, the insertion force can be gradually increased during fitting.

[0047] The connecting ribs have rounded or chamfered axial ends, and can also be provided with trapezoidal, pointed or conical ends.

[0048] In a further development of the invention, the upper surface of the connecting rib can be provided so as to form an axially mating end stop between the plastic part and the metal part.

[0049] In particular, the upper surface of the connecting rib of one part can be provided in each case to rest against the bottom of the connecting groove of the other part when the two parts are fully mated. If several connecting grooves / ribs are provided, a single mating end stop is in principle already sufficient. Finally, a mating end stop is not necessarily required (or can be provided elsewhere on the parts or on the plug connector).

[0050] In an advantageous development of the invention, it can be provided that the longitudinal length of the connecting ribs is at least 0.3 mm, preferably at least 0.5 mm. Alternatively or additionally, it can be further provided that the wall thickness of the connecting ribs is at least 0.1 mm, preferably at least 0.2 mm, more preferably at least 0.3 mm.

[0051] The depth or longitudinal extent of the connecting groove and the width of the connecting groove can preferably be formed in a manner similar to the above-mentioned values ​​so that the connecting rib can be inserted into the connecting groove with the best possible fit. However, in order to provide a particularly advantageous press fit, the wall thickness of the connecting rib can in particular be designed to be slightly larger than the width of the connecting groove.

[0052] The longitudinal extent of the connecting rib or the depth of the connecting groove preferably extends in the longitudinal direction of the plug connector, but the longitudinal extent of the connecting rib or connecting groove may also be oblique or inclined relative to the longitudinal axis of the plug connector, for example at an inclination angle of at most 45°, preferably at most 10°, more preferably at most 5°.

[0053] As an advantageous development of the invention, it can be provided that the plastic part is designed as a single piece.

[0054] The plastic part can be formed at least essentially from a single plastic material. The plastic part can be manufactured, in particular, as an injection-molded part or a turned part. However, it is not necessary that the plastic part be formed from a single plastic material. For example, a two-part technique can be applied to form the plastic part. In this case, the plastic part can optionally be formed with one or more sealing lips.

[0055] In one embodiment of the present invention, it can be provided that the metal parts are made from brass, especially when the metal parts are electrical contact elements, such as the outer conductor contact elements described below.

[0056] The metal parts may optionally have a coating, such as a Ni-Zn coating.

[0057] In an advantageous development of the invention, it can be provided that the plastic part has a hydrophobic surface (ie a water-repellent surface) and / or material properties that are resistant to hydrolysis (ie a material resistance to water).

[0058] In a development of the invention, the plastic part is -5 Less than 1 / K, preferably 20·10 -5 It may be provided that it has a coefficient of thermal expansion that is less than 1 / K.

[0059] In a development of the invention, it can furthermore be provided that the plastic part has an elongation at break of more than 1%, preferably more than 3%, particularly preferably more than 5%.

[0060] In particular, it can be provided that the plastic part is made from hard plastic (ie, primarily hard plastic, as opposed to soft plastic or primarily elastic plastic).

[0061] The plastic parts are particularly preferably made of polyketone (PK) or polyetheretherketone (PEEK) or can be made of plastic. However, other plastic materials are also suitable in principle for producing the plastic parts. However, the plastic parts are preferably not elastomers.

[0062] As a further development of the invention, the plastic part may be at least partially accommodated in the metal part and designed as a contact carrier for accommodating at least one inner conductor contact element, and the metal part may be designed as an outer conductor contact element.

[0063] The foregoing are preferred embodiments of the present invention. As already mentioned above, the configuration of the plastic part as a contact carrier and the configuration of the metal part as an external conductor contact, as well as the arrangement of the parts relative to one another, should, however, be understood as merely exemplary in principle. The features and advantages described above and below with respect to the use of the present invention for providing a sealing area between an external conductor contact element and a contact carrier can also be correspondingly transferred to other combinations of plug connector parts that need to be sealed. As already mentioned above, it is also possible, for example, for the metal part to be the internal conductor contact element and the plastic part to be its contact carrier, in which case the sealing area can be formed, for example, between the internal conductor contact element and the contact chamber of the contact carrier. Furthermore, it is also possible for the plastic part to be an insulating housing, in which case the sealing area can be arranged between the insulating housing and the internal or external conductor contact element accommodated in the insulating housing. However, all of the options mentioned should be understood as merely exemplary and not limiting.

[0064] In an advantageous development of the invention, the plastic part and the metal part may be accommodated together in the outer housing.

[0065] The outer housing may be, for example, the outer housing of a plug connector (an electrically insulating outer housing or a conductive outer housing).

[0066] However, the outer housing can also be the outer housing of a module connected only to a plug connector, in particular the outer housing of an electrical module connected to a plug connector (hereinafter also referred to as "module housing"). In this case, the plug connector can be configured, for example, as a module housing plug connector. Sealing of the interior of the module housing is made possible in a particularly advantageous manner by the proposed insulation displacement contact.

[0067] As a development of the invention, it can be provided that the plug connector has a first connection interface for connecting the plug connector to a first module and a second connection interface for connecting the plug connector to a second module.

[0068] In particular, it can be provided that the first end of the plastic part and the first end of the metal part are in each case facing towards the first connection interface, and that the second end of the plastic part and the second end of the metal part are in each case facing towards the second connection interface, so that a seal between the first and second connection interfaces can be advantageously provided by the plug connector according to the invention.

[0069] As already mentioned, the plug connector according to the invention can be of any plug connector type, i.e., for example, a housing plug connector, a printed circuit board plug connector, or a cable plug connector. The invention is suitable for any variant of plug connector, i.e., for example, a coaxial plug connector, a differential plug connector, a plug connector with a star-square configuration, or a plug connector with differential and / or coaxial contact elements. Correspondingly, the invention is also suitable for use with plug connectors of any shape (for example, circular, oval, rectangular, polygonal).

[0070] The plastic part and the metal part are preferably immovably connected to one another in the interconnected state, at least with respect to forces that are expected within the scope of the intended use of the plug connector.

[0071] The invention also relates to a plug connector assembly comprising an electrical plug connector according to the above and following description and an electrical module or an electrical cable connected to the plug connector.

[0072] As a development of the invention, it can be provided that the module to be connected to the plug connector comprises a module housing having a sealed interior and a housing opening leading to the interior for connection to the plug connector.

[0073] The sealing area of ​​the plug connector is preferably located between the end of the plastic part facing the interior of the module housing and the metal part, although alternatively (though less preferred), the seal or sealing area can also be located at the end of the part remote from the interior.

[0074] In particular, when the plug connector assembly has an electrical cable connected to the plug connector, the sealing area of ​​the plug connector may be arranged between a connection interface for connecting the plug connector to a corresponding mating plug connector and an interior of the cable plug connector that faces the cable. [Effects of the Invention]

[0075] Features described in relation to the plug connector may also be advantageously implemented in the plug connector assembly, and vice versa, and similarly, advantages described in relation to the plug connector may also be understood to relate to the plug connector assembly. [Brief explanation of the drawings]

[0076] [Figure 1] 1 shows a plug connector assembly comprising an electrical plug connector and an electrical module according to a first exemplary embodiment of the invention, in a cross-sectional view; [Figure 2] 2 shows a schematic enlarged view of the plug connector of FIG. 1 in detail; [Figure 3] 10 shows schematically an enlarged detail of the sealing area of ​​a plug connector according to a second exemplary embodiment of the present invention; [Figure 4] 10 shows schematically an enlarged detail of the sealing area of ​​a plug connector according to a third exemplary embodiment of the present invention; [Figure 5]10 shows schematically an enlarged detail of the sealing area of ​​a plug connector according to a fourth exemplary embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0077] It should be noted that the use of words such as "comprising", "having" or "with" does not exclude other features or steps. Furthermore, the use of words such as "a" or "the" indicating a single step or feature does not exclude a plurality of features or steps and vice versa.

[0078] However, in a pure embodiment of the invention, it may also be provided that the features introduced into the invention are limited by the terms "comprising," "having," or "with." Thus, the listing of one or more features can be considered limiting within the scope of the invention, which is to be considered in each case, for example, for each claim. The invention may, for example, consist only of the features recited in claim 1.

[0079] It should be noted that the terms "first" or "second" and the like are primarily used to distinguish features of each device or method, and are not necessarily intended to indicate that the features are interdependent or related to each other.

[0080] It should further be emphasized that the values ​​and parameters stated herein include deviations or variations of not more than ±10%, preferably not more than ±5%, more preferably not more than ±1%, and very particularly preferably not more than ±0.1% of the stated value or parameter, provided that these deviations are not practically excluded when the invention is implemented. The specification of ranges by starting and ending values ​​also comprises in each case all values ​​and fractions encompassed by the stated range, in particular the starting and ending values ​​and the respective mean values.

[0081] Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

[0082] The figures show preferred exemplary embodiments in which in each case individual features of the invention are shown in combination with one another, the features of which can also be implemented separately from other features of the same exemplary embodiment and can accordingly be easily combined by those skilled in the art to form further advantageous combinations and subcombinations with the features of other exemplary embodiments.

[0083] Elements having the same function are given the same reference numbers in the figures.

[0084] Figures 1 and 2 show a first exemplary embodiment of a plug connector 1 according to the invention in cross section, and Figure 2 shows an enlarged detail from Figure 1. The plug connector 1 is, for example, an electrical housing plug connector, but this should not be understood as limiting. The invention is in principle suitable for any plug connector.

[0085] The electrical plug connector 1 shown in Figure 1 is part of a plug connector assembly 2, which consists of the plug connector 1 itself and an electrical module 3. The electrical module 3 is illustratively shown to have an electrical printed circuit board 4 with a printed circuit board plug connector 5 (a female connector in the exemplary embodiment). The electrical printed circuit board 4 and printed circuit board plug connector 5 of the electrical module 3 are housed in a common module housing 6 within a sealed interior 6'.

[0086] The printed circuit board plug connector 5 of the electrical module 3 is electrically and mechanically connected to a first connection interface 7 of the plug connector 1. The plug connector 1 can contact a corresponding mating plug connector (not shown), for example at a second connection interface 8 located opposite the first connection interface 7 of the plug connector 1. An outer housing 9 of the plug connector 1 is connected to a module housing 6 of the electrical module 3 or inserted into a recess 10 of the module housing 6.

[0087] The plug connector 1 has a plastic part 11 and a metal part 12, between which a sealing area 13 is formed at the end facing the interior 6' to prevent the ingress of liquid or dirt from the second connection interface 8 into the interior 6' of the electrical module 3.

[0088] In the exemplary embodiment, the plastic part 11 is housed in the metal part 12 and is designed as a contact carrier 11 for housing the inner conductor contact element 14. The metal part 12 is exemplarily formed as the outer conductor contact element 12. However, the specific design of the plastic part 11 and the metal part 12, as well as the arrangement of the plastic part 11 within the metal part 12, should be understood as merely exemplary alternative embodiments of the present invention. The plastic part 11 and the metal part 12 can, in principle, be any plug connector part of the plug connector 1. Furthermore, the arrangement of the two parts 11, 12 relative to each other can also be interchanged, so that, for example, the metal part 12 can be housed in the plastic part 11 (e.g., in that case, a seal can be provided between the inner conductor contact element and the contact carrier).

[0089] To accommodate the plastic part 11 or contact carrier, the metal part 12 or outer conductor contact element has a lead-through 15 in which a cylindrical part 16 of the contact carrier 11 is accommodated. A first end of the contact carrier 11 and a first end of the outer conductor contact element 12 are, in the exemplary embodiment, respectively associated with the first connection interface 7, and a second end of the contact carrier 11 and a second end of the outer conductor contact element 12 are associated with the second connection interface 8 of the plug connector 1, such that the passage P (see FIG. 2 ) between the two parts 11, 12 and thus between the connection interfaces 7, 8 is sealed.

[0090] The plastic part 11 or contact carrier 11 and the metal part 12 or outer conductor contact element 12 are directly connected to one another in a force-fit manner in the sealing area 13. At least one of the parts 11, 12 has, in the sealing area 13, a connecting groove 17, 17' which runs completely around the periphery and is accessible in the axial direction x (relative to the longitudinal axis L of the plug connector 1), and the other of the parts 11, 12 in each case has, in the sealing area 13, a connecting rib 18, 18' which runs completely around the periphery and is received in the connecting groove 17, 17' (see in particular FIG. 2 ), which runs completely around the periphery and forms at least one pressure contact 19 with the connecting groove 17, 17' in order to seal the passage P between the plastic part 11 and the metal part 12 preferably fluid-tight by means of the pressure contact 19. To better distinguish between them, in the exemplary embodiment the connecting groove of the plastic part 11 is designated with the reference sign 17 and the connecting groove of the metal part 12 is designated with the reference sign 17'. Similarly, the connecting ribs of the plastic part 11 are designated with the reference numeral 18 and the connecting ribs of the metal part 12 are designated with the reference numeral 18'.

[0091] 1 shows a particularly preferred variant of the invention, in which each of the two components 11, 12 has, in each case, one of the connecting grooves 17, 17' and one of the connecting ribs 18, 18' that is received in the connecting groove 17, 17' of the other component 12, 11. Thus, each component (11, 12) has a connecting sequence consisting of a connecting groove 17, 17' and a connecting rib 18, 18' that is directly adjacent to the connecting groove 17, 17'. Each connecting rib 18, 18' thus forms a corresponding side wall of the connecting groove 17, 17' of the same component 11, 12. In this way, an S-shaped portion of the passage P can be formed in the sealing area 13, which improves the sealing properties of the plug connector 1, especially along the passage P between the two components 11, 12, where a plurality of pressure contacts 19 (three pressure contacts 19 in the exemplary embodiment) are provided. The pressure contacts 19 are preferably arranged inside one another as shown (although in the exemplary embodiment they are arranged concentrically, this does not necessarily have to be the case depending on the shape of the parts 11, 12).

[0092] At this point it should be mentioned that in principle it is also possible for the parts 11, 12 to have in each case several connecting grooves 17, 17' and / or connecting ribs 18, 18', so that the corresponding part of the passage P in the sealing area 13 is even longer, i.e., starting from the S-shape shown in Figures 1 and 2, for example, it can have a wave-shaped form of any length.

[0093] In principle, however, it is already sufficient if only one of the two parts 11, 12 has a single connecting groove 17, 17' and the other parts 12, 11 each have a single connecting rib 18, 18', as shown in the second exemplary embodiment according to Figure 3. A good sealing of the plug connector 1 can be provided even with this minimal variant of the invention.

[0094] When multiple pressure contact portions 19 are formed in the sealing area 13, as shown in Figure 2, in each case, at least one pressure contact portion 19 can be formed on all of the inner surfaces or side walls 20 located directly opposite each other of the connecting grooves 17, 17' and the outer surfaces or side walls 21 of the connecting ribs 18, 18'.

[0095] The pressure contact portion 19 can be designed to go around the periphery on a plane, as shown in Figures 1 and 2, or it can be designed to go around the periphery along a line, as shown in Figure 3. In this way, a combination of pressure contact portions 19 going around the periphery on a plane and along a line can in principle be provided.

[0096] Advantageously, it is possible to dispense with additional sealing elements, such as O-rings. The plastic part 11 is preferably designed as a single part and can be made at least essentially from a single plastic material. The plastic part 11 can optionally have a hydrophobic surface here, but this is not necessarily required. It is advantageous if the plastic part 11 has a high heat deflection temperature and / or low shrinkage behavior and is made from a hard plastic. Particularly advantageous plastic materials are, for example, polyketone or polyetheretherketone.

[0097] The connecting ribs 18, 18′ (or at least one connecting rib 18, 18′) can optionally and advantageously be used as a mating end stop between the parts 11, 12. As shown in FIG. 2 , the upper surface 22 of the connecting rib 18, 18′ (in the exemplary embodiment of FIG. 1 , the “inner” connecting rib 18′ of the metal part 12) can, for example, form the mating end stop.

[0098] The connecting ribs 18, 18' and the connecting grooves 17, 17' can in principle have any shape suitable for forming at least one pressure contact 19 in the sealing area 13. For example, the longitudinal length a1 of the connecting ribs 18, 18' can be at least 0.3 mm, preferably at least 0.5 mm. The wall thickness a2 of the connecting ribs 18, 18' can be at least 0.1 mm, preferably at least 0.2 mm, more preferably at least 0.3 mm. The dimensions of the connecting grooves 17, 17' can be designed correspondingly and complementary to this. The above values ​​should be understood as purely exemplary.

[0099] The connecting grooves 17, 17' and the connecting ribs 18, 18' preferably extend longitudinally, i.e. preferably parallel to the longitudinal axis L of the plug connector 1. However, the connecting ribs 18, 18' and / or the connecting ribs 17, 17' can also optionally extend obliquely to the longitudinal axis L of the plug connector 1, as shown in Figure 5.

[0100] It is further optionally advantageous if the connecting ribs 18, 18' widen starting from their upper surface 22 and / or if the connecting grooves 17, 17' widen starting from their groove bottom 23.

[0101] The invention described above is in principle suitable for use with any type of plug connector, so the situations depicted in the figures should be understood as examples only. In particular, the invention is also suitable for use with cable plug connectors only, e.g., an electrical cable can be attached directly to the first connection interface 7 of the plug connector 1 instead of the electrical module 3 shown in Figure 1. The plug connector 1 is also suitable as an adapter plug connector.

Claims

1. An electrical plug connector (1) comprising a plastic part (11) and a metal part (12), one of the parts (11, 12) is in each case at least partially housed within the other part (12, 11), and a sealing area (13) is formed between the plastic part (11) and the metal part (12), The plastic part (11) and the metal part (12) are directly connected to each other in a force-fit manner in the sealing area (13), At least one of the components (11, 12) has a connecting groove (17, 17') in the sealing area (13) that runs around the entire periphery of its periphery and is accessible in the axial direction (x), the other of the components (12, 11) in each case has, in the sealing area (13), a connecting rib (18, 18') which runs around the entire periphery of the rim and is received in the connecting groove (17, 17') and which forms with the connecting groove (17, 17') at least one pressure contact (19) which runs around the entire periphery of the rim, The pressure contact (19) seals the passage (P) between the plastic part (11) and the metal part (12), preferably in a fluid-tight manner. Electrical plug connector (1).

2. An electrical plug connector (1) according to claim 1, One of the two parts (11, 12) has a connecting sequence consisting of one of the connecting grooves (17, 17') and one of the connecting ribs (18, 18'), which in each case is connected to a complementary connecting sequence consisting of one of the connecting ribs (18, 18') and one of the connecting grooves (17, 17') of the other part (12, 11). Electrical plug connector (1).

3. An electrical plug connector (1) according to claim 2, The connecting grooves (17, 17') merge directly into the connecting ribs (18, 18') in the connecting sequence. Electrical plug connector (1).

4. An electrical plug connector (1) according to any one of claims 1 to 3, The pressure contact portion (19) is designed to go around the periphery at least along a line, and preferably in a plane. Electrical plug connector (1).

5. An electrical plug connector (1) according to any one of claims 1 to 4, A plurality of pressure contacts (19), preferably at least two pressure contacts (19), more preferably at least three pressure contacts (19), are distributed along the passage (P) between the plastic part (11) and the metal part (12). Electrical plug connector (1).

6. An electrical plug connector (1) according to claim 5, At least one of the insulation displacement portions (19) is arranged transversely, preferably concentrically, with respect to the longitudinal axis (L) of the plug connector (1) inside a further insulation displacement portion (19). Electrical plug connector (1).

7. An electrical plug connector (1) according to claim 5 or 6, In each case, at least one of the pressure contacts (19) is formed between all diametrically opposed side walls (20) of the connecting grooves (17, 17') and the side walls (21) of the connecting ribs (18, 18'). Electrical plug connector (1).

8. An electrical plug connector (1) according to any one of claims 1 to 7, The thickness of the connecting rib (18, 18') increases from its upper surface (22) and / or the width of the connecting groove (17, 17') increases from its groove bottom (23). Electrical plug connector (1).

9. An electrical plug connector (1) according to any one of claims 1 to 8, The top surfaces (22) of the connecting ribs (18, 18') form axial mating end stops between the plastic part (11) and the metal part (12). Electrical plug connector (1).

10. An electrical plug connector (1) according to any one of claims 1 to 9, the longitudinal length (a1) of the connecting ribs (18, 18') is at least 0.3 mm, preferably at least 0.5 mm, and / or The wall thickness (a2) of the connecting ribs (18, 18') is at least 0.1 mm, preferably at least 0.2 mm, more preferably at least 0.3 mm. Electrical plug connector (1).

11. An electrical plug connector (1) according to any one of claims 1 to 10, The plastic part (11) has a hydrophobic surface and / or material properties resistant to hydrolysis and / or －５ Less than 1 / K, preferably 20.10 －５ a coefficient of thermal expansion less than 1 / K and / or a breaking elongation greater than 1%, preferably greater than 3%, particularly preferably greater than 5% Electrical plug connector (1).

12. An electrical plug connector (1) according to any one of claims 1 to 11, The plastic part (11) is made of a hard plastic, preferably polyketone (PK) or polyetheretherketone (PEEK). Electrical plug connector (1).

13. An electrical plug connector (1) according to any one of claims 1 to 12, The plastic part (11) is at least partially housed in the metal part (12) and is designed as a contact carrier for housing at least one inner conductor contact element (14), the metal part (12) being designed as an outer conductor contact element, the plastic part (11) and the metal part (12) being preferably housed in an outer housing (9). Electrical plug connector (1).

14. An electrical plug connector (1) according to any one of claims 1 to 13, An electrical module or an electrical cable connected to an electrical plug connector (1); A plug connector assembly (2) comprising:

15. A plug connector assembly (2) according to claim 14, The electrical module (3) to be connected to the electrical plug connector (1) has a module housing (6) having a sealed interior (6') and a housing opening leading to the interior (6') for connection to the electrical plug connector (1); The sealing area (13) is arranged between the end of the plastic part (11) facing the interior (6') of the module housing (6) and the metal part (12). Plug connector assembly (2).

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