Charging socket for a charging device for electrically driven vehicles, charging socket assembly, and contact device comprising such a charging socket
Patent Information
- Application Number
- EP2023709327
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-02-27
- Publication Date
- 2026-01-07
AI Technical Summary
Charging sockets for electric vehicles often fail to maintain a reliable seal against water and dirt ingress, both when the plug is inserted and when it is not, leading to potential short circuits and reduced functionality in adverse weather conditions.
A charging socket design featuring a sealing element with both axial and radial sealing surfaces, integrated into the housing, which ensures a consistent seal regardless of the plug's state and prevents water penetration through the use of a circumferential axial sealing section, radial sealing section, and fastening sealing section, allowing for secure attachment to a housing part.
The solution effectively prevents water and dirt ingress in all operating states, ensuring the charging socket's functionality even in rain or snow, with the sealing element being easy to manufacture and assemble, and providing a reliable seal both when the plug is inserted and when the closure cover is closed.
Smart Images
Figure EP2023054850_06092024_PF_FP
Abstract
Description
[0001] DESCRIPTION
[0002] Charging socket for a charging device for electrically driven vehicles, charging socket arrangement and contact device with such a charging socket
[0003] The invention relates to a charging socket for a charging device for electrically driven vehicles with a socket housing which has a radially circumferentially delimiting housing wall and an axially delimiting housing wall which delimit a plug-in space of the charging socket, electrical contact elements which extend axially through the axially delimiting housing wall and parallel to the radially delimiting housing wall into the plug-in space of the charging socket, contact sheaths which extend axially from the axially delimiting housing wall and parallel to the radially delimiting housing wall into the plug-in space and radially surround the contact elements, and a sealing element for sealing a gap between the charging socket and the plug when the plug is plugged in, which sealing element is fastened to the charging socket.The invention further relates to a charging socket arrangement comprising such a charging socket and a receiving housing having an interior space from which the charging socket projects outwardly, as well as to a contact device comprising such a charging socket and a plug having a radially delimiting outer wall surrounding contact pins corresponding to the contact elements of the charging socket.
[0004] Such charging sockets can be used on charging stations, loading ramps or wall boxes or on vehicles to charge electrically powered vehicles by inserting a plug, which is connected via a cable to the corresponding interface on the vehicle or on the charging unit, into the charging socket, so that the battery in the vehicle can be recharged or bidirectional charging is also enabled via the charging socket, which is at least indirectly connected to a power source.
[0005] The exact design of these charging sockets often depends on the applicable local standards. However, all charging sockets have one thing in common: they must have a radial wall that radially limits the plug-in connector when charging, an axial wall, and contact elements that establish electrical contact and into which the corresponding contact pins of the connector are inserted for charging.
[0006] However, it is important to note that these charging sockets are often located outdoors and are therefore exposed to the elements. Precipitation in particular, but also humid air, from which moisture can settle on the walls of the charging socket depending on the temperature, can lead to water penetration into the charging socket, which can cause fault currents such as short circuits if the water creates a connection between two or more of the electrical contacts. In addition, the ingress of dirt or dust must be prevented.
[0007] For this reason, water or dirt must be reliably prevented from penetrating the charging socket, both when the plug is not inserted into the charging socket and when the plug is inserted. This is usually achieved by means of appropriate sealing elements.
[0008] For example, WO 2012 / 163736 A1 proposes a charging socket with a sealing element which is screwed via a holder from an open side of the plug-in space against the radially delimiting housing wall and has two circumferential sealing lugs which are intended to seal against a housing wall of the plug.
[0009] However, this charging socket has the disadvantage that it is not sealed when the plug is not inserted, and that leaks can occur when the plug is inserted if even the slightest contamination occurs in the seal area. Furthermore, water can also penetrate the charging socket's cavity during insertion.
[0010] The task therefore arises to create a charging socket for a charging device for electrically powered vehicles that both seals against the cover when closed and ensures reliable sealing with the plug when plugged in and during insertion. Accordingly, the functionality of the charging socket when plugged in should be ensured in rain or snow by reducing water penetration. These functions should be fulfilled by a single, easy-to-install or manufacture sealing element.
[0011] This object is achieved by a charging socket for a charging device for electrically driven vehicles having the features of main claim 1, by a charging socket arrangement having the features of claim 12 and by a contact device having the features of claim 14.
[0012] A charging socket according to the invention can be used in particular for charging devices, such as charging stations or charging devices integrated into the curb or kerb, or for wall boxes, such as those offered by vehicle manufacturers for owners of electric vehicles. Such a socket can also be used for charging on the vehicle. The term "electrically powered vehicle" refers to any vehicle with an electric motor that is powered by a battery within the vehicle. This can include purely electric vehicles, hybrid vehicles, bicycles with auxiliary motors, motorcycles, or scooters.
[0013] The charging socket according to the invention consists of a housing having a radially circumferentially defining housing wall, which radially encloses the plug when plugged in, and an axially defining housing wall, which defines a plug-in space of the charging socket into which the plug is inserted for charging. A radially circumferentially defining housing wall does not necessarily mean a cylindrical wall. Instead, almost any shape is conceivable, with the shape usually being specified by corresponding standards in the various countries.
[0014] The charging socket further comprises electrical contact elements, which are typically designed as slotted or unslotted sleeves, which are generally pre-tensioned radially inward so that these contact elements resiliently rest against the corresponding contacts of the plug after insertion. These contact elements extend through the axially defining housing wall and run axially and parallel to the radially defining housing wall of the charging socket in the insertion space. These contact elements are radially surrounded in the insertion space by contact sheaths, which extend axially from the axially defining housing wall and parallel to the radially defining housing wall into the insertion space. These contact sheaths stabilize the contact elements and serve as a firm guide for the contacts of the plug into the contact elements of the charging socket.The axially defining housing wall can be manufactured in one piece with the radially defining housing wall and the contact sheaths by injection molding, whereby the contact elements can be directly overmolded when inserted into the injection molding tool. Furthermore, the charging socket has a sealing element, via which a gap between the charging socket and the plug is sealed when the plug is plugged in and which is fastened to the charging socket. According to the invention, this sealing element has an axial sealing surface and a radial sealing surface, which ensures that even if dirt occurs in the area of the seal, at least one sealing surface continues to fully fulfill its sealing function and thus prevents water from penetrating the plug-in space.This seal can have sealing surfaces against the outer walls of the plug to be inserted, as well as sealing surfaces for sealing against a cover, so that water penetration can be prevented in any operating state of the charging socket, thus ensuring the functionality of the charging socket even in adverse weather conditions. Furthermore, the sealing element does not have to be a separately mounted part, but can be manufactured, for example, by molding it onto the housing of the charging socket.
[0015] Preferably, the sealing element has a circumferential axial sealing section arranged on the axial end of the radially defining housing wall, the side of which axially remote from the housing wall forms the axial sealing surface. Both the underside of a closure cover and a corresponding collar of a plug can bear against this sealing surface for axial sealing.
[0016] In a further embodiment, a radial sealing section extends radially inward from the circumferential axial sealing section over the radially inner end of the radially delimiting housing wall of the charging socket, the radial inner surface of which forms the radial sealing surface. This radial sealing surface accordingly seals against an outer housing wall of the plug when the charging socket is plugged in and reliably prevents penetration through a gap between the two radially delimiting walls of the plug and the charging socket. In addition, this sealing section also prevents water from penetrating during plugging in of the plug, as the plug rests against the sealing element as soon as it reaches the charging socket, whereby any water present on the plug housing is sheared off and cannot flow downwards into the plug-in space.In addition, a pressing force is generated when the plug is inserted and the existing static friction fixes the plug in its position in the charging socket.
[0017] In yet another further embodiment, the circumferential axial sealing section has a sealing lip that extends radially outward over the radially outer end of the radially delimiting housing wall of the charging socket. This can ensure, in particular, reliable sealing when using a closure cover that can bear against this sealing lip axially or at least with an axial component.
[0018] Furthermore, the sealing element advantageously has a circumferential, axially extending section that extends radially outward along the radially defining housing wall. This section reliably prevents water from penetrating a gap between the end of the radially defining housing wall and the axial sealing section. Furthermore, this sealing section acts after the sealing element has been pushed onto the radially defining housing wall to pre-fix the sealing element.
[0019] In addition, the sealing element has a radially extending fastening sealing section that extends along a flange surface of a mounting flange. With this fastening flange, the charging socket can be screwed to any housing part that has a corresponding opening, with the fastening sealing section interposed. This radially extending fastening sealing section directly adjoins the axially extending section of the sealing element that surrounds the housing wall, so that by fastening the charging socket to the housing, the sealing element is automatically also fixed to the socket housing of the charging socket.This reliably prevents water from penetrating the lower part of the charging socket or the space behind the flange of the charging socket, which is particularly useful if the end of this charging socket opposite the plug-in side is located in a space into which water should not penetrate, as is the case, for example, with a loading kerb.
[0020] Accordingly, the circumferential, axially extending section of the sealing element preferably extends continuously from the axial sealing section to the radially extending fastening sealing section, which extends along the flange surface of the fastening flange. This reliably protects all gaps between the socket housing of the charging socket and the sealing element from water ingress. Furthermore, the sealing element can be easily manufactured in one piece.
[0021] It is also advantageous if the sealing element radially surrounds the mounting flange and rests against the mounting flange in a radially outer region of the mounting flange on the axial side opposite the flange surface. Thus, the sealing element encompasses the flange, creating a positive-locking fixation of the sealing element to the socket housing. This allows for reliable pre-assembly of the sealing element on the socket housing.
[0022] It is particularly advantageous if the charging socket has a pivoting cover that, when closed, seals off the plug-in compartment to an open side and rests on the sealing element. This prevents water from penetrating the charging socket even when no plug is inserted into the charging socket.
[0023] In a further embodiment, the closure cover has an inner recess which, when the charging socket is closed, is arranged opposite the open side of the charging socket's insertion space, and into which an axial end of the charging socket protrudes. Accordingly, the charging socket is radially enclosed by the cover in the upper area. Due to gravity, water flowing downwards on the underside of the closure cover cannot flow into the area of the charging socket, but is instead diverted outward along the surface of the closure cover facing the charging socket.
[0024] Preferably, the inner recess is radially delimited by a conically shaped cover seat, which widens toward the charging socket when closed and with which the closure cover rests, particularly axially, on the sealing lip. Sealing is achieved by the conically shaped cover seat resting on the sealing lip of the sealing element. Due to the design as a protruding sealing lip, this is bent parallel to the cover seat, enabling radial and axial sealing between the closure cover and the charging socket.
[0025] The charging socket arrangement according to the invention consists of the charging socket and a receiving housing with an interior space from which the charging socket projects outwards, wherein the charging socket is fastened to the receiving housing via its fastening flange with the interposition of the radially extending fastening sealing section, which extends on the flange surface of the fastening flange. In this way, penetration of liquid into the interior of the housing to which the charging socket is fastened is reliably prevented. In a further embodiment, the charging socket is fastened to the receiving housing via screws, which are fastened from the side opposite the closure cover. Due to this fastening from the side opposite the closure cover, the charging socket cannot be removed from the outside of the housing and is thus protected against vandalism.Mounted from the side opposite the cover, this means that a tool can be applied to a screw head or nut from this side, while the side facing the outside of the housing is flat and therefore inaccessible to a tool. Alternatively, a screw can be screwed directly into a blind hole in the housing.
[0026] The contact device according to the invention consists of a charging socket as described in the previous paragraphs and a plug which has a radially delimiting outer wall which surrounds contact pins corresponding to the contact elements of the charging socket.
[0027] When plugged in, the plug rests with its radially limiting outer wall radially against the radial sealing surface of the sealing element, so that a gap between the outer wall of the plug and the radial limiting wall of the charging socket is reliably radially sealed.
[0028] In particular, when plugged in, the plug rests with its radially delimiting outer wall radially against the radial sealing section extending from the circumferential axial sealing section, which extends radially inward over the radially inner end of the radially delimiting housing wall of the charging socket. The radial contact of the radial sealing section extending from the axial sealing section against the housing wall of the plug creates a seal directly in the upper area of the charging socket. As a result, when the plug is plugged into the charging socket, any water present on the outer wall of the plug is sheared off during insertion and thus cannot enter the interior of the charging socket with the plug.In the contact area of the radial sealing section on the outer wall of the plug, a spring effect is created by the deformation of the radial sealing section, which holds the plug in its position after it has been inserted into the charging socket.
[0029] Preferably, the plug has a collar that extends radially outward from the radially defining housing wall and has an axial stop surface with which the plug axially rests against the axial sealing surface when plugged in. Accordingly, after the plug is fully inserted into the charging socket, an additional axial seal is created, preventing water from penetrating when the plug is plugged in.
[0030] Furthermore, it is advantageous if the axial extension of the radially defining housing wall of the charging socket from the axially defining housing wall of the charging socket is less than the axial extension of the radially defining outer wall of the plug from the axial stop surface, and the axial extension of the radially defining housing wall of the charging socket from the axially defining housing wall of the charging socket plus the axial extension of the axial sealing surface is greater than the axial extension of the radially defining outer wall of the plug from the axial stop surface. This ensures that after the plug is fully inserted into the charging socket, the axial sealing surface can be deformed while still ensuring that the contact pins are sufficiently inserted into the contact elements to establish the electrical connection.
[0031] Thus, a charging socket for a charging device for electrically powered vehicles is created, with which fault currents caused by water ingress into the charging socket can be reliably prevented. The sealing element according to the invention is easy to manufacture and assemble, as well as to fix in position relative to the charging socket. Water ingress in both the axial and radial directions can be reliably prevented both when a plug is plugged in and when the plug is not plugged in, with the cover resting on the charging socket.
[0032] An embodiment of a charging socket according to the invention for a charging device for electrically driven vehicles is shown in the figures and is described below.
[0033] Figure 1 shows a charging socket according to the invention in a perspective view.
[0034] Figure 2 shows a side view of a charging socket arrangement according to the invention in a sectional view with the closure cover open.
[0035] Figure 3 shows a side view of a contact device according to the invention with a plugged-in charging socket and open cover in a sectional view.
[0036] The charging socket 10 according to the invention consists of a socket housing 11, which forms an insertion space 12, into which a plug 16 can be inserted from an open axial side 14 to produce an electrical contact device 18.
[0037] In detail, this plug-in space 12 is radially delimited by a closed housing wall 20 defining the radial circumference and is delimited in the plug-in direction by an axially delimiting housing wall 22. A total of seven electrical contact elements 24 extend through the axially delimiting housing wall 22 from a space not visible in the figures, which is formed on the side of the plug-in space 12 opposite the axially delimiting housing wall 22 and is also delimited radially by the radially delimiting housing wall 20. These contact elements 24 are connected in the space to lines (not shown) that extend outwards through one or more openings (not shown) in a rear wall 26 of the charging socket 10.
[0038] During the manufacture of the charging socket 10, the contact elements 24, which can be designed, for example, as slotted contact sleeves, are overmolded with the plastic of the axially delimiting housing wall 22 and thus sealed. Alternatives such as subsequent potting or the installation of additional seals are also possible.
[0039] The contact elements 24 are each surrounded in the insertion space 12 by a contact sheath 28, the inner wall of which is arranged radially opposite the outer wall of the contact elements 24. The contact sheaths 28 extend perpendicular to the axially delimiting housing wall 22 into the insertion space 12 and run parallel to the radially delimiting housing wall 20.
[0040] The radially defining housing wall 20 has a substantially round shape in a cross-section that runs parallel to the axially defining housing wall 22, in a first circumferential region 30 that extends over an angle of approximately 270°. The ends of this first circumferential region 30 are connected to one another by a straight second circumferential region 32, whereby the plug 16 can only be inserted into a defined position relative to the charging socket 10. The charging socket additionally has a locking actuator 34, via which the plug 16 is locked after insertion and before the charging socket 10 is supplied with power, thus securing it against accidental removal.
[0041] This charging socket 10 can be installed either in a vertical position, i.e., with the contact elements 24 facing upwards or downwards, or in a horizontal position, i.e., with the contact elements 24 facing sideways, as well as in any intermediate position. Furthermore, they can be connected to a pivoting mechanism that allows them to be pivoted by up to 90° between the horizontal and vertical positions. However, in all positions, when the charging socket 10 is open, water, for example, from rain, can penetrate into the plug-in compartment 12, which can cause a fault current.
[0042] To prevent this, the charging socket 10 has a water drainage opening 36 which, in the present exemplary embodiment, extends from a corner region 38 between the axially delimiting housing wall 22 and the radially delimiting housing wall 20 through the radially delimiting housing wall 20 and opens into a water drainage channel 40.
[0043] However, in order to prevent water from penetrating into the plug-in space 12 in all installation and adjustment positions of the charging socket 10, the charging socket 10 has a sealing element 42, via which a gap 44 between the charging socket 10 and the plug 16 is sealed and which, according to the invention, has both an axial sealing surface 46 and a radial sealing surface 48.
[0044] For this purpose, the sealing element 42 has a circumferential axial sealing section 50, which rests on an axial end 52 of the radially delimiting housing wall 20 of the socket housing 11, as can be seen in Figure 1. From this circumferential axial sealing section 50, a radial sealing section 54 extends radially inward and thus in the direction of the open side 14 of the insertion space 12, specifically beyond a radially inner end 56 of the radially delimiting housing wall 20.
[0045] Furthermore, the axial sealing section 50 has a sealing lip 58 which extends radially outwards and beyond the radially outer end of the radially delimiting housing wall 20.
[0046] In addition, a circumferential, axially extending section 62 of the sealing element 42 extends from the axial sealing section 50 along an outer wall surface 60 of the radially delimiting housing wall 20, which section merges into a radially extending fastening sealing section 64 that rests directly on a flange surface 66 of a fastening flange 68 of the charging socket 10. This radially extending fastening sealing section 64 has a shape corresponding to the flange surface 66 and a hole pattern corresponding to the hole pattern of the fastening flange 68. A fixing section 70 extends from the radially extending fastening sealing section 64 around a radially outer region 72 of the fastening flange 68 and ends at an axial side 74 of the fastening flange 68 opposite the flange surface 66, whereby the sealing element 42 is held in a form-fitting manner in both its radial and axial position.Furthermore, it can be seen in Figure 1 that a circumferential sealing web 76 is formed on the radially extending fastening sealing section 64.
[0047] Figure 2 shows a charging socket assembly 78 according to the invention, in which the charging socket 10 is installed in a charging device 80. The charging socket 10 is fastened here with its sealing element 42 to a housing part 82 by being screwed to this housing part 82 by means of screws 84 with its fastening flange 68 and the radially extending fastening section 64 interposed therebetween.
[0048] In the present case, the housing part 82 is designed as a trough-shaped housing part 82, through which water can be drained from the area of the charging device 80, and has a hole pattern corresponding to the mounting flange 68. For fastening, the screws 84 are first passed through the housing part 82 and the mounting flange 68 and screwed there using nuts 86. The screw heads 88 do not have any shaped parts for creating a positive connection with a tool, so that loosening these screws 84 is only possible from the axial side 74 of the mounting flange 68 opposite the flange surface 66. The seal across the flange surface 66 by means of the radially extending mounting sealing section 64 is further reinforced by the compression of the sealing web 76.
[0049] The housing part 82 is fastened by means of screws with a seal 90 interposed to a cover 92, which, for example, closes a receiving space of a loading ramp. A closure cover 94 of the charging socket 10 is rotatably mounted on this cover 92 via a shaft 96. Accordingly, the closure cover can be rotated between a position in which the insertion space 12 of the charging socket 10 is covered and a position in which the insertion space is open for insertion of the plug 16.
[0050] The closure cover 94 has, on its side facing the charging socket 10 in the closed state, an inner recess 98 which is radially delimited by a conically shaped cover seat 100. The cover seat 100 projects radially outside the charging socket, viewed in the axial direction, beyond an axial end 101 of the charging socket 10 and thus beyond the sealing element 42, so that the cover seat 100 rests obliquely on the sealing lip 58 of the cover element 42 and deforms it to seal.
[0051] Accordingly, a circumferential seal is created between the closed cover element and the charging socket 10. Water located on the underside of the closure cover 94 is prevented from flowing toward the interior of the charging socket 10 by the shape of the cover seat, since the cover seat 100 has its lowest position radially outside the charging socket 10, so that the water is drained downward from there instead of flowing toward the sealing lip 58.
[0052] Furthermore, on the side of the closure cover 94 radially opposite the shaft 96, a recess 102 is formed into which a locking pin 104 engages in the closed state, which prevents the closure cover 94 from being opened without authorization, and which is pulled out of the recess 102 to release the closure cover 94 once authorization has been granted.
[0053] Figure 3 now shows a contact device according to the invention, which shows the charging socket 10 with the plugged-in plug 16. The plug 16 has a radially delimiting outer wall 106, which is designed to correspond to the radially circumferentially delimiting housing wall 20, so that the outer wall 106 of the plug 16, in the plugged-in state, is arranged opposite the housing wall 20 of the charging socket 10. However, the radial extent of the outer wall 106 of the plug 16 is slightly larger than the inner radial extent of the radial sealing section 54, so that the inner circumference of the radial sealing section 54 forms the radial sealing surface 48 to the outer wall 106 of the plug.Inside the outer wall 106, contact pins 108 are formed on the plug 16, which are arranged and shaped corresponding to the contact elements 24 of the charging socket 10 and are thus received in the contact elements 24 to establish an electrical connection when the plug 16 is plugged into the charging socket 10.
[0054] Furthermore, a circumferential collar 110 is formed on the plug 16, which serves as an axial stop surface 112, with which the plug 16 axially rests against the charging socket 10 when plugged in. The distance of this stop surface 112 to an axial extension end 114 of the radially delimiting outer wall 106 of the plug 16 is slightly greater than the axial extension of the radially circumferentially delimiting housing wall 20 from the axially delimiting housing wall 22 to the axial end of the radially delimiting housing wall 20 and, at the same time, slightly smaller than the entire axial extension of the charging socket 10 from the axially delimiting housing wall 22, i.e., the extension of the radially delimiting housing wall 20 plus the height of the circumferential axial sealing section 50 of the sealing element 42.Accordingly, the plug 16 can be pushed into the insertion space 12 until the stop surface 112 rests firmly against the axial sealing section 50 and thus the axial sealing surface 46 and the axial sealing section 50 is slightly compressed before the axial extension end 114 of the plug 16 strikes against the axially delimiting housing wall 22 of the charging socket 10.
[0055] This creates, on the one hand, an axial seal between the stop surface 112 and the axial sealing section 50 of the sealing element 42 and, on the other hand, a radial seal between the radial sealing section 54 of the sealing element 42 and the outer wall 106 of the plug 16. In addition, the radial sealing section 54 serves to pre-fix the plug 16 in the charging socket due to the friction created between the sealing element 42 and the outer wall 106 of the plug 16.
[0056] When the plug 16 is plugged in, the locking actuator 34 is switched, whereby a locking pin 116 is moved through a through opening 118 in the radially delimiting housing wall 20 of the charging socket 10 into a hole 120 in the radially delimiting outer wall 106 of the plug 16, so that the plug 16 can only be removed from the charging socket 10 with appropriate authorization.
[0057] The described charging socket, charging socket assembly, and contact device are easy to manufacture and install. Water ingress is reliably prevented both when the charging socket is closed by the cover and when plugged in. High functional reliability is achieved through the use of various sealing surfaces, particularly the radial and axial sealing when the plug is plugged in or when the charging socket is closed.
[0058] It should be clear that the invention is not limited to the described embodiment. Various forms of charging sockets with different numbers of contact elements are known. The charging socket can also be installed in different locations.
Claims
P A T E N T A N S P R Ü C H E 1. A charging socket for a charging device for electrically powered vehicles, comprising a socket housing (11) having a radially circumferentially defining housing wall (20) and an axially defining housing wall (22) defining a plug-in space (12) of the charging socket (10), electrical contact elements (24) extending axially through the axially defining housing wall (22) and parallel to the radially defining housing wall (20) into the plug-in space (12) of the charging socket (10), contact sheaths (28) extending axially from the axially defining housing wall (22) and parallel to the radially defining housing wall (20) into the plug-in space (12) and radially surrounding the contact elements (24), a sealing element (42) for sealing a gap (44) between the charging socket (10) and the plug (16) in the plugged-in state of the plug (16), which sealing element is fastened to the charging socket (10), characterized in thatthat the sealing element (42) has an axial sealing surface (46) and a radial sealing surface (48)., 2. Charging socket for a charging device for electrically driven vehicles according to claim 1, characterized in that the sealing element (42) has a circumferential axial sealing section (50) which is arranged on the axial end (52) of the radially delimiting housing wall (20) and whose radially The axial sealing surface (46) forms on the side axially remote from the housing wall (20) defining the axial sealing surface.
3. Charging socket for a charging device for electrically driven vehicles according to claim 2, characterized in that a radial sealing section (54) extends radially inward from the circumferential axial sealing section (50) over the radially inner end (56) of the radially delimiting housing wall (20) of the charging socket (10), the radial inner surface of which forms the radial sealing surface (48).
4. Charging socket for a charging device for electrically driven vehicles according to claim 2 or 3, characterized in that the circumferential axial sealing section (50) has a sealing lip (58) which extends radially outward over the radially outer end of the radially delimiting housing wall (20) of the charging socket.
5. Charging socket for a charging device for electrically driven vehicles according to one of the preceding claims, characterized in that the sealing element (42) has a circumferential, axially extending section (62) which extends radially outward along the radially delimiting housing wall (20).
6. Charging socket for a charging device for electrically driven vehicles according to one of the preceding claims, characterized in that the sealing element (42) has a radially extending fastening sealing section (64) which extends on a flange surface (66) of a fastening flange (68).
7. Charging socket for a charging device for electrically driven vehicles according to claim 5 and 6, characterized in that the circumferential, axially extending section (62) of the sealing element (42) extends from the axial sealing section (50) to the radially extending fastening sealing section (64) which extends on the flange surface (66) of the fastening flange (68).
8. Charging socket for a charging device for electrically driven vehicles according to one of the preceding claims, characterized in that the sealing element (42) radially surrounds the fastening flange (68) and bears against the fastening flange (68) in a radially outer region of the fastening flange (68) on the axial side (74) opposite the flange surface (66).
9. Charging socket for a charging device for electrically driven vehicles according to one of the preceding claims, characterized in that the charging socket (10) has a rotatably mounted closure cover (94) which, in the closed state, closes the insertion space (12) to an open side (14) and rests on the sealing element (42).
10. Charging socket (10) for a charging device for electrically driven vehicles according to claim 9, characterized in that the closure cover (94) has an inner recess (98) which, in the closed state of the charging socket (10), is opposite the open side (14) of the insertion space (12) of the charging socket (10). is arranged and into which an axial end (101) of the charging socket (10) projects.
11. Charging socket for a charging device for electrically driven vehicles according to claim 4 and 10, characterized in that the inner recess (98) is radially delimited by a conically shaped cover seat (100) which, in the closed state, widens in the direction of the charging socket (10) and with which the closure cover (94) rests on the sealing lip (58).
12. Charging socket arrangement with a charging socket (10) according to one of claims 6 to 11 and a receiving housing with an interior space from which the charging socket (10) projects outwards, characterized in that the charging socket (10) is fastened to a housing part (82) via its fastening flange (68) with the interposition of the radially extending fastening sealing section (64) which extends on the flange surface (66) of the fastening flange (68).
13. Charging socket arrangement for a charging device for electrically driven vehicles according to claim 12, characterized in that the charging socket (10) is fastened to the housing part (82) by means of screws (84) which are fastened from the side opposite the closure cover (94).
14. Contact device with a charging socket (10) according to one of the preceding claims and a plug (16) which has a radially delimiting outer wall (106) which leads to the Contact elements (24) of the charging socket (10) surround corresponding contact pins (108), characterized in that the plug (16) in the plugged-in state bears radially with its radially delimiting outer wall (106) against the radial sealing surface (48) of the sealing element (42).
15. Contact device according to claim 14, characterized in that the plug (16) in the inserted state bears with its radially delimiting outer wall (106) radially against the radial sealing section (54) extending from the circumferential axial sealing section (50), which extends radially inward over the radially inner end (56) of the radially delimiting housing wall (20) of the charging socket (10).
16. Contact device according to claim 14 or 15, characterized in that the plug (16) has a collar (110) which extends radially outward from the radially delimiting housing wall (20) and which has an axial stop surface (112) with which the plug (16) rests axially against the axial sealing surface (46) in the inserted state.
17. Contact device according to claim 14 to 16, characterized in that the axial extension of the radially delimiting housing wall (20) of the charging socket (10) from the axially delimiting housing wall (20) of the charging socket (10) is less than the axial extension of the radially delimiting outer wall (106) of the plug (16) from the axial stop surface (112) and the axial extension of the radially delimiting housing wall (20) of the charging socket (10) from the axial limiting housing wall (20) of the charging socket (10) plus the axial extent of the axial sealing surface (46) is greater than the axial extent of the radially limiting outer wall (106) of the plug (16) from the axial stop surface (112).