Seal, electrical plug connector and electrical plug connection assembly

Abstract

The invention relates to an insulating seal for an electrical plug connector, having a passage opening for receiving contact elements of the electrical plug connector, having a contact sealing portion which extends in a sleeve-like manner along the passage opening, and having a creepage distance increasing portion which is arranged opposite the contact sealing portion, wherein the creepage distance increasing portion continues the passage opening in a tube-like manner and / or extends away from the passage opening in a plate-like manner. The contact sealing portion serves to seal a gap between the contact elements and a housing of the plug connector, while the creepage distance increasing portion is adapted to isolate the contact elements from other components in the interior of the housing which have different electrical potentials. The seal according to the invention thus replaces additional insulating components and allows savings in terms of costs, material and / or installation space. The invention also relates to the use of such a seal. The invention also relates to an electrical plug connector and an electrical plug connector assembly having such a seal.

Description

Technical Field

[0001] This invention relates to seals for electrical plug connectors and the use of such seals in electrical plug connectors. Additionally, this invention relates to electrical plug connectors having such seals. The electrical plug connector according to the invention can, for example but not exclusively, be a standardized plug connector, particularly for charging connectors or charging sockets for electrically driven vehicles (e.g., electric vehicles or plug-in hybrid vehicles). The invention also relates to electrical plug connection assemblies having such electrical plug connectors. Background Technology

[0002] Plug connectors are used in a variety of technical fields to establish detachable connections for transmitting current and / or signals. For electrical safety and improved operation, each plug connector typically includes a housing from which conductive contact elements emerge, establishing mutual electrical contact between the plug connectors to be connected. Particularly at the points where the contact elements pass, it is necessary to prevent moisture and / or dirt from entering the interior of the housing.

[0003] Depending on the application, additional components may be additionally housed within the plug connector housing, such as electronic components for operating monitoring and / or communication interfaces of systems. These need to be effectively separated from the contact elements because they typically have different potentials.

[0004] Therefore, the present invention is based on the objective of creating a technical device that can meet the above requirements in a simple manner while saving costs, materials and / or installation space. Summary of the Invention

[0005] This objective is achieved by a seal of the type described at the beginning, having a channel opening for receiving contact elements of an electrical plug connector, having a contact sealing portion extending along the channel opening in a sleeve-like manner, and having a creepage distance increasing portion disposed opposite to the contact sealing portion, wherein the creepage distance increasing portion extends from the channel opening in a tubular manner and / or extends away from the channel opening in a plate-like manner.

[0006] The advantages of this invention are as follows: the seal, due to its shape, is primarily suited for installation in an electrical plug connector, and its sleeve-shaped contact sealing portion seals the unavoidable gap between the contact element and the plug connector housing. In particular, the contact sealing portion can partially surround the contact element of the plug connector. Simultaneously, the seal is adapted to insulate the contact element inside the housing from other components with different potentials via a tubular or plate-shaped creepage distance increase portion. This will be explained in more detail below.

[0007] Because the sealing and insulation functions are integrated, there is no need to provide separate insulation components, which would otherwise result in additional costs and material expenses, and would occupy an unnecessarily large amount of installation space. Therefore, this invention leads to savings in cost, materials, and / or installation space.

[0008] The aforementioned basic objective is also achieved by an electrical plug connector having a seal according to the invention, which further comprises a housing, a circuit board disposed on or within the housing, and at least one contact element inserted into a contact chamber of the housing and passing through a contact channel opening of the circuit board, wherein a contact sealing portion of the seal in the contact chamber seals the gap between the housing and the at least one contact element, and wherein the creepage distance of the seal increases by partially padding the interior of the contact channel opening of the circuit board to electrically isolate the at least one contact element from the circuit board.

[0009] The circuit board can serve as a carrier for components with different potentials, as mentioned above. Therefore, insulation between at least one contact element and the circuit board is equivalent to isolation between at least one contact element and components with different potentials. Thus, the electrical plug connector according to the invention also benefits from the advantages just mentioned. In particular, at least one contact element and the circuit board can be constructed within a confined space without milling separation grooves in the circuit board or taking similar precautions.

[0010] The use of the seal according to the invention in an electrical plug connector having a housing, a circuit board disposed on or within the housing, and at least one contact element inserted into a contact chamber of the housing and passing through a contact channel opening of the circuit board, also satisfies the aforementioned basic purpose, wherein the contact sealing portion of the seal seals the gap between the housing and the at least one contact element, and wherein the creepage distance of the seal increases by partially padding the interior of the contact channel opening of the circuit board to electrically isolate the at least one contact element from the circuit board. Due to the above-described functional integration, the use according to the invention also possesses the advantages just mentioned.

[0011] The present invention can be further improved by the following embodiments, which are advantageous in themselves and can be randomly combined with each other.

[0012] The seal is preferably made of silicone resin, such as vinyl-methyl-silicone (VMS), or other sealing materials with good insulation properties, wherein good insulation properties are provided when the CTI (Comparative Tracking Index) of the sealing material indicates a creepage resistance of more than 600.

[0013] According to another possible embodiment of the seal according to the invention, the tubular creepage distance increasing portion may extend axially away from the contact sealing portion relative to the channel opening. The plate-shaped creepage distance increasing portion may correspondingly extend radially away from the contact sealing portion relative to the channel opening and perpendicularly. Alternatively, the creepage distance increasing portion may also be configured as rib-shaped, collar-shaped, annular, umbrella-shaped, and / or bell-shaped. Therefore, the extension direction and / or shape of the corresponding creepage distance increasing portion can be configured according to the geometry of the electrical plug connector.

[0014] According to another possible embodiment, the plate-shaped creepage distance increasing portion may include a raised portion in the radial portion that protrudes in the axial direction relative to the channel opening. Additionally or alternatively, the plate-shaped creepage distance increasing portion may include a recessed portion in the radial portion that descends or recedes in the axial direction. In particular, the plate-shaped creepage distance increasing portion may include at least one convex bend as a raised portion and / or a concave bend as a recessed portion. The convex bend may be implemented by a bead, preferably an annular bead. The concave bend may be implemented by a groove, preferably an annular groove.

[0015] The increased creepage distance is therefore given an outer surface with a structured surface, particularly the end face, whose surface area is larger than that of a flat, smooth surface with the same circumference or the same shaded area. As a result, the length of the creepage distance generated in the spatial direction exceeds the spatial extension of the increased creepage distance portion in that direction. In other words, the outer surface (particularly the end face of the increased creepage distance portion) is defined by an outer edge and an inner edge surrounded by the outer edge, wherein the distance extending along the outer surface (particularly the end face) between the outer and inner edges is longer than the spatial distance between the outer and inner edges. This allows for relatively long creepage distances for electrical insulation to be achieved in a relatively small installation space. The actual required length of the creepage distance can be based on contractual, regulatory, and / or legal requirements.

[0016] To achieve an additional extension of the creepage distance, the lifting portions and / or recesses can be arranged adjacent to each other in the radial direction relative to the channel opening. Specifically, the lifting portions and recesses can alternately follow each other in the radial direction and form a meandering portion. Due to the meandering portion, the outer surface (particularly the end face) of the creepage distance-increasing portion in the radial section is given a meandering profile. Therefore, the outer surface (particularly the end face) of the creepage distance-increasing portion can be corrugated, grooved, or slotted, i.e., it has a corrugated, grooved, or slotted structure.

[0017] According to another possible embodiment, the seal may further include a retaining portion for attaching the seal to the electrical plug connector. The retaining portion may extend radially inward into the channel opening and / or outward away from the channel opening, forming at least one or two undercuts that respectively establish a forced interlocking engagement connection to the housing, to at least one contact element, and / or to the circuit board of the electrical plug connector. In this way, the seal can be applied to the electrical plug connector in a simple manner and can be removed again for maintenance or repair if necessary.

[0018] To achieve improved retention of the seal, the retaining portion can also be configured as an annular, particularly flange-shaped, retaining element. The retaining element can, for example, be formed between the contact sealing portion and the creepage distance increased portion.

[0019] According to one possible embodiment, the seal can be configured as a sealing gasket that can be inserted into the contact chamber of the housing and the contact channel opening of the circuit board. The sealing gasket can be frictionally engaged with the housing, at least one contact element, and / or the circuit board. To improve this frictional engagement connection, the contact sealing portion and / or creepage distance increase portion can include a radially inward and / or outwardly projecting compression lip. The compression lip of the contact sealing portion can also act as a sealing lip, thereby improving the sealing effect already described.

[0020] Alternatively or additionally, the seal configured as a sealing gasket may be connected to the housing, at least one contact element, and / or circuit board in a forced interlocking manner via a fixing element.

[0021] In an alternative embodiment, the seal can be configured as a sealing element injected into the contact channel opening of the circuit board, forming a two-part assembly with the circuit board. The sealing element can be connected to the circuit board in a forced interlocking material manner, particularly at the creepage distance increased portion. The contact sealing portion is then preferably also formed on the creepage distance increased portion.

[0022] Because the connection is achieved through a forced interlocking material fit, fixing elements can be omitted in this embodiment. Therefore, undercutting to retain the seal is unnecessary, allowing the seal to be configured thinner, particularly using less material. Additionally, the creepage distance extension can extend flush with the circuit board to save installation space. In this embodiment, the creepage distance extension advantageously includes only a recess and not a lift, ensuring that the creepage distance extension does not protrude beyond the circuit board on at least one side.

[0023] For applications with multiple contact elements, the seal according to another possible embodiment may include at least two channel openings, each channel opening for receiving one contact element of the electrical plug connector. The seal may then further include multiple contact sealing portions and / or creepage distance increasing portions corresponding to the number of channel openings.

[0024] Additionally, in this embodiment, the seal may include a gasket connecting at least two channel openings. In other words, at least two channel openings pass through the gasket. The gasket also preferably connects a contact sealing portion to a creepage distance increasing portion to form a single integral component. The contact sealing portion may protrude from one side of the gasket, and the creepage distance increasing portion may protrude from the opposite side of the gasket.

[0025] The distance between at least two channel openings can then be defined using a sealing gasket, which simplifies the installation of the seal. Furthermore, the sealing gasket can serve as a circuit board bed, lying flat on the circuit board of the electrical plug connector, wherein one or more creepage distance-increasing portions each protrude into a corresponding contact channel opening in the circuit board. One or more contact sealing portions can each partially protrude into a corresponding contact chamber of the housing.

[0026] When at least two channel openings are parallel to each other and / or in a plane, preferably in the plane of the gasket, the geometry of the seal appears to facilitate installation.

[0027] The sealing gasket may optionally be abutted against one or more creepage distance extension portions in the radial direction relative to the channel opening, thereby contributing to the additional extension of the relevant creepage distance.

[0028] As an alternative to a one-piece molded component, electrical plug connectors may also include several separate seals configured as sealing gaskets or sealing elements.

[0029] According to another embodiment of the electrical plug connector, the circuit board may include at least one temperature sensor for monitoring the operating temperature of at least one contact element, wherein a thermal bridge is arranged in a seal and disposed between the at least one contact element and the temperature sensor. The thermal bridge can be implemented by inserting into the seal or by using a thermally conductive element injection-molded over the seal.

[0030] Due to the excellent insulation properties of the sealing material and the increased creepage distance provided by the seal, the thermal bridge can be made of a metallic material (e.g., copper). The higher thermal conductivity of the metallic material compared to the sealing material can thus at least partially accelerate heat transfer from at least one contact element to the temperature sensor, resulting in less measurement delay. Consequently, overheating of at least one contact element can be detected more quickly, and a faster response can be achieved. This is particularly important for high-voltage applications.

[0031] In order to enable the electrical plug connector to be used in high-voltage applications, at least one contact element can be configured as a high-voltage contact. In particular, the high-voltage contact can be configured to transmit electrical energy at an AC voltage higher than 30V to 1kV or a DC voltage higher than 60V to 1.5kV.

[0032] According to another possible embodiment, the electrical plug connector may include a contact locking member for locking at least one contact element within a contact chamber of the housing. Specifically, the contact locking member may be configured to form a forced interlocking engagement with at least one contact element, thereby preventing at least one contact element from being unintentionally pulled out of the contact chamber. Consequently, the seal is also indirectly locked into place via the contact locking member.

[0033] For example, the contact locking element can be implemented via a latching protrusion that extends into the contact chamber of the housing and / or is integrally connected to the housing. The latching protrusion is preferably configured to be flexible and hook-shaped, and engages in a recess of at least one contact element, thereby automatically establishing a forced interlocking engagement between the latching protrusion and at least one contact element when the at least one contact element is inserted into the contact chamber. This simplifies the assembly process of at least one contact element, and correspondingly simplifies the assembly process of the seal.

[0034] Additionally or alternatively, the contact locking element can be implemented using a contact locking component, which can be attached to the housing as a separate part. Specifically, the contact locking component and the housing can be configured to interlock with each other through relative displacement. Due to this relative displacement, the contact locking component is attached to the housing and rests on a stop surface of at least one contact element. For this purpose, at least one contact element may include a radial shoulder forming the stop surface. The stop surface preferably extends parallel to the circuit board. Therefore, the relative displacement between the contact locking component and the housing can also be parallel to the circuit board.

[0035] To ensure that the necessary air and creepage distances are also met at the contact locking element, the contact locking element, when attached to the housing, rests only on the stop surface of at least one contact element, without contacting the creepage distance increase portion of the seal or the circuit board. For this purpose, the contact locking element may include a horseshoe-shaped leg for each contact element of the electrical plug connector to be locked, which engages around the respective contact element and rests on the associated stop surface. The remaining portion of the contact locking element is accordingly sufficiently spaced from the creepage distance increase portion of the seal and from the circuit board.

[0036] A particularly space-saving embodiment emerges when the stop surface extends flush with the circuit board, as described above for the increased creepage distance, and does not protrude beyond the circuit board. The contact locking element, particularly the horseshoe-shaped feet of the contact locking element, can then move particularly close to the circuit board and past the seals during the relative displacement between the contact locking element and the housing, without being obstructed by them. This achieves a flat structure for the entire electrical plug connector.

[0037] The aforementioned basic objective can also be achieved by an electrical plug connection assembly having an electrical plug connector according to one of the described embodiments and a mating connector configured to complement the electrical plug connector, wherein the mating connector includes complementary mating contacts for each contact element of the plug connector, and at least one signal contact that can be connected to a circuit board. The at least one signal contact of the mating connector can directly contact the circuit board of the electrical plug connector, or can be connected to the circuit board via an intermediate contact disposed on the housing of the electrical plug connector and soldered to the circuit board.

[0038] Due to the advantages of the electrical plug connector according to the invention, and especially the seal according to the invention as described above, the requirements for sealing and insulation at different potentials can also be met by the electrical plug connection assembly according to the invention, while saving costs, materials and / or installation space. Attached Figure Description

[0039] The present invention will now be described in more detail with reference to the accompanying drawings and several embodiments. Different features can be combined with each other as needed based on the above description. Similar, identical, or functionally equivalent elements in the drawings have the same reference numerals within appropriate scopes.

[0040] in

[0041] Figure 1 A schematic perspective view of a seal according to a first exemplary embodiment is shown;

[0042] Figure 2 A schematic perspective cross-sectional view of several seals in a circuit board according to a second exemplary embodiment is shown;

[0043] Figure 3 A schematic perspective cross-sectional view of an electrical plug connector according to an exemplary embodiment is shown;

[0044] Figure 4 A schematic perspective cross-sectional view of an electrical plug connection assembly according to an exemplary embodiment is shown; and

[0045] Figure 5 It shows Figure 4 Another schematic perspective cross-sectional view of the electrical plug connection assembly. Detailed Implementation

[0046] The following will refer to Figures 1 to 5 This section illustrates the schematic structure and application of the seal 1 according to the present invention. (Refer to...) Figures 3 to 5 A schematic structure of the electrical plug connector 2 according to the present invention will be described below. (Referring to...) Figure 4 and Figure 5 A schematic structure of the electrical plug connection assembly 4 according to the present invention is described.

[0047] Figure 1 and Figure 2 Exemplary embodiments of the seal 1 for an electrical plug connector 2 according to the present invention are shown respectively. Figures 3 to 5 An electrical plug connector 2 is shown, which has a seal 1 according to the invention, a housing 6, a circuit board 8 disposed in the housing 6, and at least one contact element 14 inserted into a contact chamber 10 of the housing 6 and passing through a contact channel opening 12 of the circuit board 8. Figure 3 An electrical plug connector 2 with two contact elements 14 is shown only as an example. Accordingly, Figure 3 The housing 6, by way of example only, also includes two contact chambers 10, and the circuit board 8 includes two contact channel openings 12. However, the contact elements 14, contact chambers 10, and contact channel openings 12 are not limited to the number, shape, and arrangement shown, and can be modified according to the appropriate application.

[0048] The seal 1 is preferably made of silicone resin, such as vinyl-methyl-silicone (VMS) or other sealing materials, with a CTI (Comparative Tracking Index) value of over 600, thus reflecting good insulation performance.

[0049] like Figure 1 and Figure 2 As shown, the seal 1 includes at least one channel opening 16 for receiving one of the contact elements 14 respectively (see Figure 1). Figure 3 The number of channel openings 16 can be adapted to the number of contact elements 14 required for the corresponding application. Alternatively, the number of seals 1 in the electrical plug connector 2 can also be adapted accordingly. The seals 1 in... Figure 1 The image shown is for illustrative purposes only and features seven channel openings 16. In contrast, Figure 2 Several seals 1 are shown, each having a channel opening 16.

[0050] For each channel opening 16, the contact sealing portion 18 of the seal 1 extends along the corresponding channel opening 16 in a sleeve-like manner. Additionally, for each channel opening 16, the creepage distance extension portion 20 of the seal 1 is disposed opposite to the contact sealing portion 18.

[0051] exist Figure 1 In this configuration, the corresponding creepage distance increase portion 20 extends the associated channel opening 16 in a tubular manner along the axial direction 22. Figure 2 In the diagram, each of the creepage distance increasing portions 20 extends radially 24 from the channel opening 16 in a plate-like manner. Alternatively, the corresponding creepage distance increasing portions 20 may also be configured as rib-shaped, collar-shaped, annular, umbrella-shaped, and / or bell-shaped. The extension directions 22, 24, and / or shapes of the corresponding creepage distance increasing portions 20 may also vary within the seal 1 and adapt to the geometry of the electrical plug connector 2 (see [link to documentation]). Figure 3 ).

[0052] Due to its shape, the seal 1 is suitable for installation within the electrical plug connector 2 within its application range, and its sleeve-shaped contact sealing portion 18 seals any gap 26 that appears between the contact element 14 and the housing 6 of the electrical plug connector 2. To improve the sealing effect, the seal 1 may include a sealing lip 28 projecting radially inward and / or outward on the contact sealing portion 18. This can be achieved by... Figure 2 and Figure 3 As can be seen from this, the sealing lip 28 can also be used as a compression lip and establish or improve the frictional engagement connection 30 between the seal 1 and the housing 6, the contact element 14 and / or the circuit board 8.

[0053] Meanwhile, the seal 1 is adapted to insulate the corresponding contact element 14 in the interior 32 of the housing 6 from the circuit board 8 and all components 34 disposed on the circuit board 8 via an associated tubular or plate-shaped creepage distance increasing portion 20. In particular, the corresponding creepage distance increasing portion 20 pads the associated contact channel opening 12 of the circuit board 8 on the inner side, thereby electrically isolating the passing contact element 14 from the circuit board 8.

[0054] As from Figure 2As can be seen from the radial portion 36, the plate-shaped creepage distance increasing portion 20 may include at least one recess 38 that is lowered or recessed in the axial direction 22. In particular, the plate-shaped creepage distance increasing portion 20 may include at least one concave bend 40 as the recess 38. In an exemplary embodiment, the concave bend 40 is shown as being implemented as an annular groove 42. Alternatively or additionally, the plate-shaped creepage distance increasing portion 20 may include a lift portion that protrudes in the axial direction 22 in the radial portion 36. The lift portions and / or recesses may be arranged adjacent to each other in the radial direction 24 relative to the channel opening 16, particularly alternating and forming a meandering portion 44. The outer surface 46 of the creepage distance increasing portion 20, particularly the end face 48, may be corrugated, grooved, or slotted, i.e., have a corrugated, grooved, or slotted structure.

[0055] like Figure 3 As shown, the plate-shaped creepage distance increase portion 20, on its outer surface 46, particularly its end face 48, is given a meandering portion 44, i.e., a meandering profile, by an annular groove 42. Therefore, the distance 50 extending along the end face 48 between the outer edge 52 and the inner edge 54 of the end face 48 exceeds the spatial distance 56 between the outer edge 52 and the inner edge 54. Thus, the formed creepage distance 58 is longer than the spatial extension range 60 of the creepage distance increase portion 20.

[0056] Compared to the spatial distance 56 between the circuit board 8 and the associated contact element 14, the tubular creepage distance increase portion 20 also increases the creepage distance 58 between the circuit board 8 and the associated contact element 14.

[0057] Figure 1 The shown seal 1 includes a gasket 62, which connects the channel opening 16, the contact sealing portion 18, and the creepage distance increasing portion 20 to form an integral component 64. The contact sealing portion 18 and the creepage distance increasing portion 20 are arranged there to project outwards on opposite sides 66, 67 of the gasket 62, respectively.

[0058] like Figure 3 As shown, the sealing gasket 62 can serve as a circuit board bed 68, which lies flat on the circuit board 8 and is arranged between the circuit board 8 and the housing 6, for example, for shock absorption. Creepage distance increasing portions 20 each protrude into or through the corresponding contact channel opening 12 of the circuit board 8 and are internally lined with the latter. Contact sealing portions 18 again each partially protrude into the corresponding contact chamber 10 of the housing 6.

[0059] Alternatively, the seal 1 can also be configured as a sealing gasket, which can be inserted into the contact chamber 10 of the housing 6 and the contact channel opening 12 of the circuit board 8. The seal 1 configured as a sealing gasket can be held by the aforementioned friction engagement connection 30. Additionally or alternatively, the seal 1 configured as a sealing gasket may include a fixing portion that extends radially into and / or outward from the channel opening 16, for example, perpendicular to the channel opening 16, and forms at least one or two undercuts that respectively establish a forced interlocking engagement connection to the housing 6, at least one contact element 14, and / or the circuit board 8 of the electrical plug connector 2.

[0060] Figure 2 The seal 1 shown does not have a sealing gasket 62 or a fixing portion, but instead is configured as a sealing element 70, which is injected into the associated contact channel opening 12 of the circuit board 8 and forms a two-part assembly 72 with the circuit board 8. The corresponding sealing element 70 can be connected to the circuit board 8 in a forced interlocking material fit, particularly at the creepage distance increase portion 20 of the former. In particular, the corresponding creepage distance increase portion 20 extends flush with the circuit board 8. Since the corresponding creepage distance increase portion 20 includes only an annular groove 42 and does not include a lifting portion, the seal 1 does not protrude beyond the circuit board 8 on one side 74. On the opposite side 76 of the circuit board 8, a corresponding contact sealing portion 18 is formed on the corresponding creepage distance increase portion 20.

[0061] like Figure 3 As shown, the circuit board 8 of the electrical plug connector 2 may include at least one temperature sensor 78 for detecting the operating temperature of at least one contact element 14, wherein a thermal bridge 80 is arranged in the seal 1 and disposed between the at least one contact element 14 and the temperature sensor 78. The thermal bridge 80 may be configured, for example, as a copper element 82, or an element made of a different metal material, and is inserted into or injection-molded into the seal 1. Due to the seal 1, the creepage distance 84 between the thermal bridge 80 and the at least one contact element 14 is also increased.

[0062] like Figure 4 and Figure 5As shown, at least one contact element 14 can be locked within the contact chamber 10 of the housing 6. For this purpose, the electrical plug connector 2 includes a contact locking element 86 as a contact locking member 88. The contact locking element 86 is configured to be attached to a separate component of the housing 6. Specifically, the contact locking element 86 and the housing 6 can be configured to interlock with each other by a relative displacement 90. Due to the relative displacement 90, the contact locking element 86 is attached to the housing 6 and rests on a stop surface 92 of at least one contact element 14. For this purpose, at least one contact element 14 may include a radial shoulder 94 forming the stop surface 92. In the illustrated embodiment, the stop surface 92, and therefore the direction of the relative displacement 90, extends parallel to the circuit board 8.

[0063] To ensure that the necessary air and creepage distances are also met at the contact locking element 86, the contact locking element 86, in its attached state 96 to the housing 6, rests only on the stop surface 92 of at least one contact element 14 (see...). Figure 5 The contact locking element 86 is positioned such that it does not contact the creepage distance increase portion 20 of the circuit board 8 or the seal 1. This is achieved by the contact locking element 86 comprising a horseshoe-shaped foot 98 for each contact element 14 of the electrical plug connector 2 to be locked, which partially engages around the corresponding contact element 14 and rests on the associated stop surface 92. The remaining portion of the contact locking element 86 is at a sufficient distance from the circuit board 8 and from the creepage distance increase portion 20 of the seal 1, such as... Figure 5 As shown.

[0064] In addition, Figure 4 and Figure 5 As can be seen, the stop surface 92 of at least one contact element 14 extends flush with the circuit board 8 and, in particular, does not protrude outward beyond the side 74 of the circuit board 8. Since the creepage distance increase portion 20 of the seal 1 does not protrude outward beyond the circuit board 8 on this side 74, as already described, the contact locking element 86, in particular the horseshoe-shaped foot 98 of the contact locking element 86, can move unimpeded through the circuit board 8 and the creepage distance increase portion 20 of the seal 1 during the relative displacement 90. This is... Figure 4 It is shown in the middle by the dashed line 100.

[0065] Furthermore, the electrical plug connector 2 may include an additional contact locking device, implemented via a latching protrusion 104 that extends into the contact chamber 10 of the housing 6 and is integrally connected to the housing 6 (see [link]). Figure 4 and Figure 5The latching protrusion 104 is flexible and hook-shaped, and engages in a recess 106 of at least one contact element 14 to form an additional forced interlocking connection 108 between the latching protrusion 104 and at least one contact element 14.

[0066] Figure 4 and Figure 5 An electrical plug connection assembly 4 according to the invention is shown, which has an electrical plug connector 2 and a mating connector 110 configured to be complementary to the electrical plug connector 2. In particular, the electrical plug connector 2 and the mating connector 110 are configured to be inserted together along the insertion direction 112.

[0067] exist Figure 4 and Figure 5 In the greatly simplified representation shown, the mating connector 110 includes a mating contact 114, which is shaped to complement the contact element 14 of the electrical plug connector 2. Additionally, the mating connector 110 includes a signal contact 116 configured to connect to the circuit board 8. Specifically, when the electrical plug connection assembly 4 is in a mated state, the signal contact 116 can directly contact the circuit board 8 or connect to the circuit board 8 via an intermediate contact disposed on the housing 6 of the electrical plug connector 2 and soldered to the circuit board 8.

[0068] Of course, the mating connector 110 may differ from other connectors in the number, shape, and arrangement of its mating contacts 114 and signal contacts 116. Figure 4 and Figure 5 The diagram is greatly simplified and can be adapted to its specific application. In particular, the mating connector 110 may include mating contacts 114 for each contact element 14 of the electrical plug connector 2 and signal contacts for each intermediate contact of the electrical plug connector 2.

[0069] Figure Labels

[0070] 1. Seals

[0071] 2. Plug connector

[0072] 4. Plug connection assembly

[0073] 6. Outer shell

[0074] 8 circuit boards

[0075] 10 Contact Chamber

[0076] 12. Contact channel opening

[0077] 14 Contact elements

[0078] 16-channel opening

[0079] 18. Contact sealing part

[0080] 20. Increased creepage distance

[0081] 22 Axial direction

[0082] 24 Radial direction

[0083] 26 gaps

[0084] 28 Sealing lip edge

[0085] 30 connections

[0086] 32 Internal

[0087] 34 parts

[0088] 36 Radial portion

[0089] 38. Depression

[0090] 40 Concave bend

[0091] 42 Annular groove

[0092] 44. Winding section

[0093] 46 Outside

[0094] 48 end face

[0095] 50 distance

[0096] 52 Outer edge

[0097] 54 Inner edge

[0098] 56 Distance

[0099] 58 Creepage Distance

[0100] 60 Extended Range

[0101] 62 Sealing Gasket

[0102] 64 parts

[0103] 66 Side View

[0104] 67 Side View

[0105] 68 Circuit Board Bed

[0106] 70 Sealing elements

[0107] 72 Dual-component assembly

[0108] 74 Side View

[0109] 76 Side View

[0110] 78 Temperature Sensor

[0111] 80 thermal bridge

[0112] 82 Copper Components

[0113] 84 Creepage Distance

[0114] 86 Contact locking element

[0115] 88 Contact locking element

[0116] 90 Relative Displacement

[0117] 92 Stop surface

[0118] 94 Shoulders

[0119] 96 Status

[0120] 98 Feet

[0121] 100 lines

[0122] 102 Contact locking element

[0123] 104 latching protrusions

[0124] 106 recess

[0125] 108 connections

[0126] 110 mating connector

[0127] 112 Plug-in direction

[0128] 114 Mating Contact

[0129] 116 Signal Contact

Claims

1. An electrical plug connector (2) having a seal (1) and having a housing (6) with a circuit board (8) arranged on the housing (6) and with at least one contact element (14) inserted into a contact chamber (10) of the housing (6) and passing through a contact passage opening (12) of the circuit board (8), wherein the seal (1) has a passage opening (16) for receiving the contact element (14) of the electrical plug connector (2), a contact sealing portion (18) extending in a sleeve-like manner along the passage opening (16) and a creepage distance increasing portion (20) arranged opposite the contact sealing portion (18), wherein the creepage distance increasing portion (20) continues the passage opening (16) in a tube-like manner and / or extends away from the passage opening (16) in a plate-like manner, wherein the contact sealing portion (18) of the seal (1) seals a gap (26) between the housing (6) and the at least one contact element (14) and wherein the creepage distance increasing portion (20) of the seal (1) lines the contact passage opening (12) of the circuit board (8) in order to electrically isolate the at least one contact element (14) from the circuit board (8).

2. The electrical plug connector (2) of claim 1, wherein, The creepage distance increasing portion (20) comprises elevations projecting in an axial direction (22) relative to the passage opening (16) in a radial portion (36) and / or recesses (38) recessed in the axial direction (22).

3. The electrical plug connector (2) of claim 2, wherein, The elevations and / or recesses (38) are arranged adjacent to each other in the radial direction (24) relative to the passage opening (16) and form a meander (44).

4. The electrical plug connector (2) according to any one of claims 1 to 3, wherein, The seal (1) comprises a securing portion for retaining the seal (1) at the electrical plug connector (2).

5. The electrical plug connector (2) according to any one of claims 1 to 3, wherein, The seal (1) comprises at least two passage openings (16).

6. The electrical plug connector (2) of claim 5, wherein, The seal (1) comprises a sealing gasket (62) and wherein the sealing gasket (62) connects the at least two passage openings (16).

7. The electrical plug connector (2) of claim 6, wherein, The sealing gasket (62) abuts the creepage distance increasing portion (20) in the radial direction (24) relative to the passage opening (16).

8. The electrical plug connector (2) of claim 5, wherein, The at least two passage openings (16) are arranged in a plane.

9. The electrical plug connector (2) as recited in claim 1, wherein, The seal (1) is configured as a sealing element (70) which is injected into the contact passage opening (12) of the circuit board (8) and which forms a two-part assembly (72) with the circuit board.

10. The electrical plug connector (2) as claimed in claim 1 or 9, wherein, The circuit board (8) comprises at least one temperature sensor (78) for monitoring an operating temperature of the at least one contact element (14) and wherein a thermally conductive bridge (80) is arranged in the seal (1) and is arranged between the at least one contact element (14) and the temperature sensor (78).

11. The electrical plug connector (2) as claimed in claim 1 or 9, wherein, The at least one contact element (14) is configured as a high-voltage contact.

12. The electrical plug connector (2) as claimed in claim 1 or 9, wherein, The plug connector (2) comprises a contact locking element (86) attachable to the housing (6), wherein the at least one contact element (14) comprises a shoulder (94) having a stop surface (92) extending flush with the circuit board (8), and wherein the contact locking element (86) is configured to rest on the stop surface (92) in an attached state (96) to the housing (6).

13. An electrical plug connection assembly (4) having an electrical plug connector (2) as claimed in any one of claims 1 to 12, and having a mating connector (110) configured to be complementary to the electrical plug connector (2), wherein the mating connector (110) comprises a complementary shaped mating contact (114) for each contact element (14) of the plug connector (2) and at least one signal contact (116) connectable to the circuit board (8).

14. Use of a seal (1) in an electrical plug connector (2) having a housing (6), having a circuit board (8) arranged on the housing (6), and having at least one contact element (14) inserted into a contact chamber (10) of the housing (6) and passing through a contact passage opening (12) of the circuit board (8), wherein the seal (1) has a passage opening (16) for receiving the contact element (14) of the electrical plug connector (2), a contact sealing portion (18) extending along the passage opening (16) in a sleeve-like manner, and a creepage distance increasing portion (20) arranged opposite the contact sealing portion (18), wherein the creepage distance increasing portion (20) continues the passage opening (16) in a tube-like manner and / or extends away from the passage opening (16) in a plate-like manner, wherein the contact sealing portion (18) of the seal (1) seals a gap (26) between the housing (6) and the at least one contact element (14), and wherein the creepage distance increasing portion (20) of the seal (1) lines the contact passage opening (12) of the circuit board (8) in order to electrically isolate the at least one contact element (14) from the circuit board (8).

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