Cable entry point for a charging cable and charging station for an electric vehicle

Abstract

Cable entry (10) for a charging cable (6) for charging an electric vehicle with a connection flange (12) for attaching the cable entry (10) to a charging station (1), with a cable passage (K; K') extending in a cable entry direction (H) and adaptable to or adapted to the outer contour of the charging cable (6), wherein a strain relief for forces acting on the charging cable (6) in the cable entry direction (H) is provided in the cable passage (K; K'), characterized in that a rotational relief for forces and / or torques acting longitudinally and / or rotationally about the cable entry direction (H) on the charging cable (6) is provided in the cable passage (K; K') for contact with the charging cable (6).

Description

[0001] The invention relates to a cable gland for a charging cable according to the preamble of claim 1 and a charging station for an electric vehicle according to the preamble of claim 19.

[0002] German patent DE 20 2021 100 498 U1 discloses a charging station for electric vehicles, in particular electric cars or trucks, with a housing on which two charging cables are arranged as visible parts of two charging strings. Each charging cable has a handle with a connector at its free end for connecting to a corresponding counterpart on the vehicle being charged. The connectors can be configured for different charging sockets on the vehicle, for example, as CCS / Combo 2 connectors, CHAdeMO connectors, or simple CCS connectors. During operation, it was observed that the charging cables, particularly in the area where they enter the charging station housing, can be easily damaged.If, for example, a vehicle is parked relatively far from the charging station and the charging cable is just short of reaching the vehicle's charging socket, many drivers try to force the cable in to avoid having to move the vehicle closer to the charging station. Some drivers also twist the cable when connecting it, causing it to become twisted, especially where it enters the charging station. Since the cable is already more bent at this point, the forceful twisting described above has an even more detrimental effect there than in the rest of the cable.

[0003] EP 2 816 672 B1 discloses a strain relief system comprising a guide bracket and at least one actuating claw associated with the guide bracket, which is movably arranged within the guide bracket substantially along the longitudinal axis of an inserted cable from a pre-locking position to a final locking position. During movement from the pre-locking position to the final locking position, the actuating claw as a whole performs a movement to secure the inserted cable and provide strain relief. This design does not provide anti-rotation protection for the cable.

[0004] DE 20 2019 005 522 U1 discloses a cable gland for a fluid-cooled cable, comprising: a housing (13), an inlet (10) through which the cable (2) can be routed into the housing (13), a first outlet (11) through which electrical lines (20) of the cable (2) can be routed out of the housing (13), a second outlet (12) through which at least one fluid line (21) of the cable (2) can be routed out of the housing (13), and at least one sealing element (14, 15) at at least one of the outlets (11, 12).

[0005] EP 2 423 028 A2 discloses a power supply control device comprising a body part in which a circuit block is housed; a first cable that extends outwards from the body part to be connected to a charging circuit of an electric vehicle; a second cable that extends outwards from the body part to be connected to a power source; and a sealing element that seals a gap between each of the cables and a corresponding cable entry opening in the body part. The power supply control device further comprises an external limiting element provided on each of the cables on an outer surface of the sealing element to prevent the corresponding cable from being bent.

[0006] CN 117693868 A discloses a socket arrangement mounted on a vehicle, which serves to charge an internal energy storage device using an external power supply. A wire protection sleeve is attached to the back of the socket base.

[0007] Other known cable glands with strain relief are disclosed in EP 2 377 204 B1, US 10 290 970 B1, US 11 349 254 B2, US 2011 / 154940 A1, US 2011 / 312211 A1, US 5 975 942 A, US 8 288 667 B2, WO 2007 / 113307 A1 and WO 93 / 06637 A1.

[0008] The object of the invention is therefore to provide a cable gland for a charging cable and a charging station for an electric vehicle, which overcome the aforementioned disadvantages and prevent damage to the charging cable during use, in particular in the area where the charging cable passes into the charging station and especially in the case of improper handling, and enable reliable and long operation of the charging station without replacing the charging cable.

[0009] The invention relates to a cable gland for a charging cable with the features of claim 1 and a charging station for an electric vehicle with the features of claim 19.

[0010] The cable passage mentioned at the outset for the charging cable of a charging station for electric vehicles is characterized according to the invention in that a rotational relief device for forces or torques acting longitudinally and / or rotationally around the cable passage direction on the charging cable is provided in the cable passage for attachment to the charging cable.

[0011] An electric vehicle can be, in particular, a land-based electric passenger or truck vehicle, whereby the electric vehicle can be operated fully electrically or in a hybrid manner.

[0012] Preferably, the cable gland can have a connection flange extending substantially transversely to the cable gland direction for attaching the cable gland to a charging station housing. A sealing element can advantageously be provided on the side of the connection flange facing the housing.

[0013] Furthermore, the connection flange can have a sealing edge for the sealing element that extends completely or intermittently around the connection flange and points towards the housing in the direction of cable entry. The connection flange can also have at least one, preferably two, mounting holes for fastening screws that extend in the direction of cable entry for attachment to the housing.

[0014] In a further embodiment, the strain relief can advantageously include at least one clamping element, in particular an annular clamping ring, projecting transversely into the cable passage. Furthermore, the clamping element can preferably have an inner contour, in particular an inner diameter, that is smaller than the outer contour, in particular the outer diameter, of the charging cable. The clamping element can also have at least one compensating recess on its inner contour, which is intended for contact with the charging cable and increases the inner contour.

[0015] Furthermore, it is advantageous to have at least one first groove, in particular a first annular groove, extending transversely to the cable routing direction, provided in the cable passage for receiving the clamping element. The clamping element can also preferably have at least one positioning element on its outer surface, located farther from the cable routing direction and transverse to the cable routing direction, which interacts with a correspondingly shaped counter-positioning element, in particular a positioning recess, formed in the first groove.

[0016] Preferably, the clamping element can consist of two clamping element sections, in particular clamping ring sections, which are preferably identical in construction and / or symmetrical to each other. Alternatively, the two clamping element sections can be designed differently, in particular asymmetrically to each other.

[0017] Furthermore, the anti-rotation device can advantageously include at least one anti-rotation element, in particular an annular anti-rotation ring, projecting transversely into the cable passage. The anti-rotation element can advantageously have an inner contour, in particular an inner diameter, that corresponds to or is smaller than the outer contour, in particular the outer diameter, of the charging cable.

[0018] Furthermore, the anti-rotation element can have at least one, preferably several, anti-rotation projections on its inner side, which lies transversely to the cable routing direction and projects into the cable passage. These projections are designed to engage the charging cable, and the anti-rotation projection(s) preferably project further into the cable passage than the outer contour, in particular the outer diameter, of the charging cable transversely to the cable routing direction. Additionally, a circle defined by the inwardly projecting anti-rotation projections and coaxial with the axis of the cable passage in the cable routing direction can have a smaller diameter than the outer diameter of the charging cable.

[0019] Preferably, at least one second groove, in particular a second annular groove, extending transversely to the cable routing direction, can be provided in the cable passage to receive the anti-rotation element. Advantageously, the anti-rotation element can have at least one positioning element on its outer side, located far from the cable routing direction and transverse to the cable routing direction, which interacts with a correspondingly shaped counter-positioning element, in particular a positioning recess, formed in the second groove.

[0020] The anti-rotation element can advantageously consist of two, preferably identical and / or mutually symmetrical anti-rotation element sections, in particular anti-rotation ring sections. Alternatively, the two anti-rotation element sections can be designed differently, in particular be asymmetrical to each other.

[0021] Advantageously, the cable entry can consist of two, preferably identical and / or mutually symmetrical, cable entry parts, each forming a portion of the cable passage. The cable entry parts can be separated from each other in a plane running essentially parallel to the cable entry direction, particularly outside a plane of symmetry of the cable entry. Alternatively, the two cable entry parts can be identical in design. Furthermore, each of the two cable entry parts can have a semi-cylindrical sleeve section extending in the cable entry direction for gripping the charging cable. Additionally, one, preferably both, cable entry parts can have at least one clamping bore for a clamping element, in particular a clamping screw, which can be connected to the other cable entry part.Each other cable entry part preferably has at least one clamping thread for the clamping element designed as a clamping screw.

[0022] An advantageous embodiment of the invention may provide for at least one adapter sleeve that can be inserted into the cable passage, the outer contour of which, in particular its outer diameter, can be adapted to the inner contour, in particular its inner diameter, of the cable passage. The adapter sleeve may have a flange extending transversely to the cable passage direction and projecting laterally, at least partially, beyond the cable passage. Furthermore, the adapter sleeve may be long enough in the cable passage direction that, when inserted, it extends from the entrance of the cable passage to the clamping element on the clamping element side, or from the entrance of the cable passage to the anti-rotation element on the anti-rotation element side. The adapter sleeve may also consist of two adapter sleeve sections separated along the cable passage direction.

[0023] Preferably, the strain relief in the cable routing direction can be arranged closer to the housing-side exit of the cable passage than the rotational relief.

[0024] The charging station for electric vehicles mentioned above is characterized according to the invention in that the cable routing is shown in the drawings and defined in the claims as described above and below. The charging station preferably serves to charge an electric vehicle as described above and below, in particular a land vehicle, but can also be used at ports for charging watercraft or at airfields for charging aircraft.

[0025] Preferably, fastening means, in particular fastening screws, can be provided adjacent to the cable entry point, which interact with corresponding fastening means, in particular fastening holes, of the cable entry point to secure the charging cable to the housing. Advantageously, the cable entry point can be provided in a wall that runs essentially perpendicular to the height of the housing.

[0026] Preferably, the wall can be the upper edge of a recess molded into the housing. Alternatively, the charging cable can hang downwards from the housing.

[0027] Furthermore, the charging cable can advantageously have an outer cable sheath made of an electrically insulating material, in particular plastic or rubber, and electrical conductors for power transmission, measuring lines and / or data lines embedded in the cable sheath.

[0028] Furthermore, the charging cable can preferably have a charging plug at its end opposite the cable entry point. Additionally, the housing can advantageously have a receptacle for the charging plug.

[0029] An advantageous embodiment of the invention can provide a kit for attaching a charging cable as described above and below and defined in the claims to a charging station, comprising a cable gland, wherein the kit is characterized in that the cable gland is shown in the drawings as described above and below and defined in the claims, wherein the kit comprises several clamping elements, in particular pairs of clamping elements, with different inner contours, in particular inner diameters, and / or several anti-rotation elements, in particular pairs of anti-rotation elements with different inner contours, in particular inner diameters, for charging cables of different outer contours, in particular inner diameters.Preferably, the kit can include one or more adapter sleeves that can be inserted into the cable passage on one or both sides, wherein the inner contour, in particular the inner diameter, of the adapter sleeves is different.

[0030] The invention is described below with reference to a detailed embodiment and the accompanying drawings. These show: Fig. 1 a schematic view of a charging station for electric vehicles according to the invention; Fig. 1a a schematic three-dimensional detail view of the charging station Fig. 1 in the area of ​​the cable entry with the cable entry not yet fully assembled; Fig. 2 the schematic three-dimensional view of a cable gland for the charging cable of the charging station Fig. 1a; Fig. 3 the schematic three-dimensional exploded view of the cable gland Fig. 2; Fig. 4 a schematic three-dimensional view of a clamping ring section of the cable gland made of Fig. 3; Fig. 5 a schematic three-dimensional sectional view through a part of the cable penetration Fig. 3 with a cut through the clamping ring section; Fig. 6 a schematic three-dimensional view of a rotary locking ring section of the cable gland Fig. 3; Fig. 7 a schematic three-dimensional sectional view through a part of the cable penetration Fig. 3 with a cut through the rotation locking ring section; Fig. 8 a top view of the cable entry in the exploded view Fig. 3; Fig. 9 a schematic three-dimensional exploded view of the cable gland Fig. 3 with cable arranged therein; Fig. 10 a schematic three-dimensional exploded view of the cable gland made of Fig. 3 with sealing element; Fig. 11 a schematic three-dimensional view of the cable entry from Fig. 3 with cable from Fig. 9 and sealing element made of Fig. 10; Fig. 12 a schematic three-dimensional view of an alternative cable routing accordingly Fig. 2 for a cable with a smaller diameter.

[0031] Fig. Figure 1 shows an electric charging station 1 according to the invention for electric vehicles (not shown), in particular land-based electric passenger or truck vehicles. The electric vehicle can be operated fully electrically or in hybrid mode. The charging station 1 can also be used at ports for charging watercraft or at airfields for charging aircraft.

[0032] The charging station 1 has a housing 2, which is mounted on a base 3. The housing 2 can also be attached to a wall of a building, vehicle, or similar structure. The charging electronics, including the charging controller, are housed in the housing 2. The user can configure the necessary settings for a charging process and start, pause, and stop the charging process via a display 4 with operating elements. Alternatively, this can also be done via a user interface on a mobile device, such as a smartphone, or via a user interface located in the vehicle, provided it can be directly or indirectly connected to the charging station 1's control system. The housing 2 also has a connector 5.

[0033] To charge the vehicle electrically, a charging cable 6 with a charging plug 7 is provided, which is inserted into the plug receptacle 5 when not in use. To enable operation of the charging cable 6, in particular to connect it to the charging socket on the vehicle, the charging plug 7 has a handle 8.

[0034] Typically, the charging cable 6 has several electrical conductors 6a, 6b, 6c for transmitting charging energy, measuring conductors 6d, signal conductors, control conductors, and possibly also mechanical reinforcing elements, etc. These are connected by a Fig. 1, Fig. 1a, Fig. 8, Fig. 9 and Fig. The 11 clearly visible cable sheaths 6e, made of an elastic plastic, are enclosed, serving as both mechanical protection and additional electrical insulation. The various conductors 6a-d are then internally connected within the housing 2 to the respective units, such as the power supply, control unit, measurement and evaluation units, etc. Furthermore, depending on the location and power range, the charging station can have a different number and configuration of charging cables 6, both in terms of the diameter of the charging cables 6, their length, internal structure, and connection types for different types of charging sockets and transmission modes (direct current, alternating current, etc.).

[0035] To guide the charging cable 6 into the interior of the housing 2, the housing 2 has a recess in its upper area that is separated from the surface of its Fig. 1. The visible front surface features a recessed depression 9 with a horizontally extending upper wall 9a. The depression 9 preferably extends diagonally forward from top to bottom, so that the lower edge of the depression 9 is essentially flush with the front surface of the housing 2.

[0036] The upper wall 9a of the recess 9 has a cable passage 9b, advantageously circular in shape, through which the charging cable 6 can be inserted into the interior of the housing 2. A cable gland 10 is provided to secure the charging cable 6 to the housing 2. Fig. 1 in the fully assembled and in Fig. Figure 1a shows the cable gland before final assembly. The cable gland 10 serves two purposes: firstly, to support the weight of the hanging charging cable 6 against the housing, and secondly, to absorb the forces exerted on the charging cable 6 by the user during use. For this purpose, the cable gland 10 provides strain relief in the direction H of the cable gland's passage (i.e., in the axial direction L of the cable's longitudinal axis), and secondly, to prevent the cable from twisting or rotating around its longitudinal axis (i.e., in the torsional direction for a circular charging cable 6).

[0037] The cable gland 10 is now being used based on the Fig. 2 to 11 explained in detail.

[0038] In Fig. Figure 2 shows the cable gland 10 in its assembled state, but without the charging cable 6 inserted, while in Fig. 3 to 11 different representations of the cable entry 10 or parts thereof are shown in different representational styles. In Fig. 8, Fig. 9 and Fig. Figure 11 also shows the charging cable 6 that was inserted, while in the Fig. For the sake of clarity, charging cable 6 has been omitted from numbers 2 to 7 and 10.

[0039] Fig. Figure 2 shows the cable gland 10 in its assembled state, but without the charging cable 6 inserted. The cable gland 10, as can be seen in particular from the combination with Fig. 3 clearly recognizable, consisting of two identically designed cable entry parts 11, 11'. The cable entry 10 further has a connection flange 12, which extends essentially perpendicular to the routing direction H of the charging cable 6. The connection flange 12 serves to attach the cable entry 10 with the charging cable 6 inserted to the upper wall 9a of the recess 9 and thus to the housing 2, as shown in Fig. 1 and Fig. 1a shown.

[0040] The connection flange 12 has a sealing edge 13 on its side facing the upper wall 9a of the recess 9, which is raised in the cable entry direction H, into which a Fig. 10 and Fig. The sealing element 14 shown in Figure 11 is inserted. The sealing element 14 preferably consists of a soft plastic, or optionally a rigid foam. This serves, among other things, to attach the cable gland 10 to the housing 2 with some elastic damping in order to prevent the vibrations caused by the operation of the charging cable 6 from affecting the housing 2. As shown in Figure 11, the sealing element 14 is preferably made of a soft plastic, or optionally of a rigid foam. This serves, among other things, to attach the cable gland 10 to the housing 2 with some elastic damping in order to prevent the vibrations caused by the operation of the charging cable 6 from affecting the housing 2. Fig. As can be clearly seen, the sealing element 14 has an inner passage for the charging cable 6 as well as passages adapted to the position and diameter of the centering mandrels 9c, 9c'.

[0041] The cable gland 10 has fastening holes 15, 15' for attachment to the upper wall 9a, which run in the cable gland direction H and are provided at diagonally opposite corners of the connection flange 12. The fastening holes 15, 15' engage as shown in Fig. 1a, Fig. 9 and Fig. As can be seen, fastening screws 16, 16' are inserted through corresponding bores in centering pins 9c, 9c' in the upper wall 9a of the housing 2 and then screwed into the fastening bores 15, 15'. The fastening bores 15, 15' can either have internal threads, or the fastening screws 16, 16' can be tightened with nuts located on the side facing away from the upper wall 9a. The centering pins 9c, 9c' preferably engage in the fastening bores 15, 15', which for this purpose first have a cylindrical section with a larger inner diameter adapted to the outer diameter of the centering pins 9c, 9c', and then have the internal thread described above at the base of this section. This fastening allows the cable gland 10 to be securely attached to the housing 2, while the sealing element 14 provides some damping.

[0042] Instead of the fastening described above, other types of fastening can also be used, which can be quickly assembled and disassembled.

[0043] Furthermore, to connect the two cable gland parts 11, 11' in Fig. Ten clamping bores 17, 17' shown in Figures 3 to 10 are provided, each having internally designed clamping threads 18, 18'. The clamping threads 18, 18' each have a clamping thread projection 19, 19' that extends beyond the laterally adjoining walls of the cable entry parts 11, 11' and are located in, among other places, Fig. 3 and Fig. Five recognizable corresponding recesses of a larger diameter than the actual clamping bores 17, 17' engage in the clamping bores 17, 17', thereby providing additional adjustment of the cable entry parts 11, 11' relative to each other and facilitating assembly. Furthermore, the clamping bores 17, 17' each have a cylindrical section on the outside of the connection flange 12 with a larger inner diameter than the actual clamping bores 17, 17', which, firstly, forms a stop for the heads of the fastening screws 16, 16. Secondly, these cylindrical sections are recessed so deeply into the connection flange 12 that the fastening screws 16, 16' disappear completely into them when assembled.

[0044] To enable the charging cable 6 to pass through the cable gland 10, semi-cylindrical sleeve sections 21, 21' extending in the cable gland direction H are provided in the cable gland parts 11, 11'. These thus surround a substantially cylindrical cable passage K through the cable gland 10, the diameter of which is adapted to the diameter of the charging cable 6.

[0045] The sleeve sections 21, 21' each have semicircular annular groove sections 22, 22', which together form a circumferential annular groove. Essentially semicircular annular clamping ring sections 24, 24' can be inserted into the first annular groove sections 22, 22', which together form a fully circumferential clamping ring.

[0046] In Fig. 4 to 7 each refers only to the one in Fig. Figure 3 shows the left half of the cable gland 10, i.e., the cable gland part 11 and the corresponding interacting parts. The same applies to the parts shown in Figure 3. Fig. 3 and 8 to 10 on the right side, the right half of the cable entry 10, i.e. the cable entry part 11'.

[0047] As especially in Fig. As can be clearly seen in Figure 5, a circular segment-shaped positioning recess 23, extending perpendicular to the cable routing direction H, is provided on the outer side of the first annular groove section 22. In the assembled state, a correspondingly circular segment-shaped positioning element 25, extending perpendicular to the cable routing direction H and projecting outwards, rests in this recess on the outer side of the semicircular clamping ring section 24. The same applies to the section in Fig. Figures 3 and 8 to 10 show the first annular groove section 27' of the sleeve section 21' on the right. In the installed state, the positioning recess 23 and positioning recess 23' are preferably diametrically opposed to each other. Similarly, the positioning element 25 and the positioning element 25' are also preferably diametrically opposed to each other. However, the positioning recesses 23 and 23' and the corresponding positioning elements 25 and 25' can also be non-diametrically opposed to each other, and in particular, can be distributed evenly or unevenly around the circumference.

[0048] The clamping ring sections 24, 24' serve to secure the cable 6 against movement in the cable routing direction H and thus also in the axial longitudinal direction L of the cable 6, and to absorb loads acting on the charging cable 6 in the longitudinal direction L. The inner diameter, in particular of the inner walls, of the clamping ring sections 24, 24' is therefore smaller, preferably slightly smaller, than the outer diameter of the charging cable 6. If other inner contours are chosen, these must be correspondingly smaller than the outer contour of the charging cable 6.

[0049] At the free ends that meet, the clamping ring sections 24, 24' each have identical compensating recesses 26, 26' on both sides. These recesses project outwards relative to the inner walls of the clamping ring sections 24, 24', meaning that, in the case of the semicircular clamping ring sections 24, 24', they have a slightly larger inner diameter than the inner diameter of the inner walls of the clamping ring sections 24, 24'. The clamping ring sections 24, 24' thus have stepped ends on their inner sides. The compensating recesses 26, 26' serve to allow slight movement of the cable sheath 6e around the charging cable 6 when the cable gland 10 is installed. Instead of the stepped contour, the compensating recesses 26, 26' can also have other shapes, e.g., triangular, polygonal, or rounded.

[0050] Furthermore, the sleeve sections 21, 21' each have identically shaped semicircular annular groove sections 27, 27', which together form a circumferential annular second annular groove. Essentially semicircular annular anti-rotation ring sections 29, 29' can be inserted into the second annular groove sections 27, 27', which together form a fully circumferential anti-rotation ring.

[0051] As especially in Fig. 6 and Fig. As can be clearly seen in the second locking ring section 29, two circular segment-shaped positioning recesses 28, extending perpendicular to the cable routing direction H, are provided on its outside, into which corresponding circular segment-shaped positioning elements 30, extending perpendicular to the cable routing direction H, come to lie on the outside of the semicircular locking ring section 29 when the assembly is complete.

[0052] The same applies to the one in Fig. 3 and 8 to 10, the second ring groove section 27' of the other sleeve section 21' shown there on the right, with its two positioning recesses 28' and its two positioning elements 30'.

[0053] In the installed state, the positioning recesses 28 and the positioning recesses 28' are preferably arranged in pairs diametrically opposite each other. Similarly, the positioning elements 30 and positioning element 30' are also preferably arranged in pairs diametrically opposite each other. However, the positioning recesses 28 and 28' and the corresponding positioning elements 30 and 30' can also be arranged in non-diametrical positions, in particular, they can be distributed evenly or unevenly around the circumference.

[0054] Furthermore, the second annular groove section 27 has twist-resistant projections 31 on its inner side in the area of ​​the positioning elements 30, which are shorter in the circumferential direction and act more selectively than the positioning elements 30. The same applies to the section in Fig. 3 and 8 to 10, the second ring groove section 27' of the other sleeve section 21' shown there on the right with its two twisting projections 31'.

[0055] Preferably, the inner diameter, in particular of the inner walls, of the anti-rotation sections 29, 29' is adapted to the outer diameter of the charging cable 6 or is only slightly smaller than it, while diametrically opposed anti-rotation projections 31, 31' preferably have a smaller, in particular slightly smaller, distance between them than the diameter of the charging cable 6.

[0056] If the twisting projections 31, 31' are not diametrically opposed to each other, their vertices projecting towards the cable passage K preferably lie on a circle concentric to the cable passage K with a diameter that is smaller, in particular slightly smaller, than the diameter of the charging cable 6.

[0057] The anti-rotation projections 31, 31' thus provide an anti-rotation device for the charging cable 6, which is intended to prevent, as far as possible, any twisting or twisting of the charging cable 6 in the cable gland 10 caused by use. The anti-rotation ring sections 29, 29' therefore serve to secure the charging cable 6 against rotational movements around the cable gland direction H or the axial longitudinal direction L of the charging cable 6 and to absorb loads acting in this direction of rotation.

[0058] Preferably, the first annular groove sections 22, 22' with the clamping ring sections 24, 24' are located closer to the housing 2 in the cable routing direction H and thus further away from the external forces than the second annular groove sections 27, 27' with the anti-rotation sections 29, 29'. This advantageously allows rotational components of external forces, which cause the twisting of the charging cable 6, to be absorbed first. Following this rotational strain relief, the longitudinal components of the forces acting in the cable routing direction H and thus in the axial longitudinal direction L of the charging cable 6 can then be absorbed, thereby providing longitudinal strain relief.

[0059] The cable gland 10 described above thus enables both securing the charging cable 6 against longitudinal displacements in the cable gland direction H or axial longitudinal direction L as well as against rotation about these directions, whereby the two-part design of the cable gland 10 allows for easy assembly and adaptation to different charging cables with different cable diameters.

[0060] The cable gland 10 can be mounted by first loosely pre-assembling the cable gland parts 11, 11' with the clamping screws 20, 20', then inserting the charging cable 6 through the cable passage K and then tightening the clamping screws 20, 20' and thus firmly mounting the cable gland 10 to the charging cable 6.

[0061] The cable gland parts 11, 11' can also be pre-assembled separately with all components and then placed around the charging cable 6. The clamping screws 20, 20' are then screwed into the clamping threads 18, 18' and tightened.

[0062] Fig. Figure 11 then shows the cable gland 10, already mounted on the charging cable 6, as it can then be mounted on the housing 2. For this purpose, the [unclear text] is [unclear text]. Fig. 1a and Fig. 11. The charging cable 6 shown, with its upper, free connection end and the partially exposed wires 6a-d, is guided through the cable passage 9b, and then the mounting holes 15, 15' are pushed over the centering pins 9c, 9c' and subsequently the mounting screws 16, 16' are screwed into the mounting holes 15, 15' as described above.

[0063] Fig. Figure 12 shows a schematic three-dimensional view of an alternative cable gland 110 according to the invention. Fig. 2 for a charging cable 6 with a smaller diameter. These are identical components with the same reference numbers as those in Fig. The two parts shown are depicted, while corresponding but differently designed parts contain the same reference digits supplemented by a preceding digit “1”.

[0064] The alternative cable entry 110 again has two preferably identically designed cable entry parts 111, 111', wherein the circular diameter of the cylindrical cable passage K' formed by alternative cylindrical sleeve sections 121, 121' is significantly smaller than that of the one described in Fig. 1 first design shown.

[0065] However, the external dimensions of the sleeve sections 121, 121' are the same as those of the sleeve sections 21, 21', and the connection flange 112 with mounting holes 15, 15' also corresponds to that of the cable entry 10 described above, in order to enable connection to the housing 2 with uniform cable passages 9b for a wide variety of cable diameters and to avoid having to make any additional adjustments to the housing 2.

[0066] Preferably, only those components are modified that need to be adapted to the smaller diameter of the alternative charging cable 6, in particular those components that are intended to ensure a secure fit of the charging cable 6 both in the axial longitudinal direction L of the charging cable 6 and against twisting in the cable gland 110 in the cable passage K'. These are in particular the components described in Fig. 12 recognizable components such as a first annular groove 122, a clamping ring 124, a compensating recess 126, a second annular groove 127 or a rotation locking ring 129. These each have the corresponding sections and parts as already described above in the first embodiment of the cable gland 10.

[0067] Preferably, the respective inner diameters of the first annular groove 122 and the second annular groove 127 can remain unchanged, so that the corresponding outer diameters of the clamping ring 124 and the anti-rotation ring 129 to be inserted therein also remain unchanged. Only the inner diameter of the clamping ring 124 then needs to be adapted to the smaller cable diameter according to the specifications above. The same applies to the anti-rotation ring 129, in which at least the distances between the diametrically opposed anti-rotation projections 131, 131' preferably have a smaller distance between them than the now smaller cable diameter. If necessary, the inner diameter of the anti-rotation ring 129 or its two sections can also be adapted accordingly.

[0068] If necessary, the cable entry parts 11, 11' described above can be used instead of the alternative cable entry parts 111, 111', whereby the adaptation of the inner diameter of the cylindrical sleeve sections 21, 21' to the smaller cable diameter can then be achieved by one or more adapter sleeves or adapter sleeve sections, which have an outer diameter corresponding to the inner diameter of the original cable passage K, but whose inner diameter is adapted to the smaller cable diameter to form the alternative smaller cable passage K'. Preferably, such adapter sleeves can have a flange on one side that is larger than the now smaller cable diameter and also projects beyond the end faces of the sleeve sections 21, 21' that extend transversely to the cable entry direction H.In the cable routing direction H, one adapter sleeve is inserted into the cable passage K up to the first annular groove formed by the first annular groove sections 27, 27'. The other adapter sleeve is then inserted into the opposite entrance of the cable passage K in the opposite direction up to the second annular groove formed by the second annular groove sections 27, 27'. The cable passage 10 is pre-assembled at this point; the clamping screws 20, 20' are not yet tightened. This allows the charging cable 6 to be inserted through the cable passage adapted by the inserted adapter sleeves, and then the clamping screws 20, 20' to be tightened, thus firmly mounting the cable passage 10 to the charging cable 6.

[0069] If necessary, the adapter sleeves can also be slid over the end of the cable 6 in the correct position before the cable guide parts 11, 11' are assembled, and then the cable guide parts 11, 11' are placed around the charging cable 6 and fastened together.

[0070] If necessary, the adapter sleeves can also be designed in two parts like the other parts of the cable gland 10, so that they can be pre-assembled together with the other components and then placed around the charging cable 6 and finally assembled with the cable gland 10.

[0071] In this design, the adaptation to a different outer diameter is achieved by only adjusting the inner diameters of the components coming into contact with the charging cable 6, while the remaining dimensions remain the same, and by adjusting the diameter difference between cable passage K and charging cable 6 using adapter sleeves.

[0072] The adaptability described above, whether through the in Fig. The alternative design of the cable gland 110 shown and described above, or the adaptation using adapter sleeves, facilitates assembly and allows the charging station 1 to be adapted on-site or after a certain period of time, for example, if it is determined that a switch from a higher-power supply to a lower-power supply is required, or if a change of the charging station 1 from truck charging to car charging is desired, thus requiring a thinner charging cable 6. In this respect, considerable modularity is provided.

[0073] Preferably, the respective matching inner and outer contours of the first annular groove sections 23, 23' and clamping ring sections 24, 24' and the second annular groove sections 27, 27' and anti-rotation ring sections 29, 29' differ from each other, so that the clamping ring sections 24, 24' and anti-rotation ring sections 29, 29' cannot be accidentally inserted into the respective wrong second or first annular groove section 27, 27' or 23, 23' during assembly.

[0074] Instead of the cylindrical or annular shape of the sleeve sections 22, 21', the first annular groove sections 23, 23', the clamping ring section 24, 24', the second annular groove sections 27, 27', and the anti-rotation ring sections 29, 29', these can also have other cross-sections or inner and outer contours, which, however, must fit together accordingly. For example, the inner contours of the annular groove sections 23, 23' and the corresponding outer contours of the respective clamping ring section 24, 24' and / or the inner contours of the second annular groove sections 27, 27' and the outer contours of the corresponding anti-rotation ring sections 29, 29' can have a polygonal, in particular hexagonal, octagonal, or dodecagonal cross-section. In this case, the positioning recesses and positioning elements can be omitted or are formed by the corners of the respective cross-sections.

[0075] The corresponding inner contours of the first annular groove sections 23, 23' and the outer contours of the clamping ring sections 24, 24' may also differ from the corresponding inner contours of the clamping ring sections 24, 24' and the outer contours of the sleeve sections 21, 21'. Likewise, the corresponding inner contours of the second annular groove sections 27, 27' and the outer contours of the anti-rotation ring sections 29, 29' may differ from the corresponding inner contours of the anti-rotation ring sections 29, 29' and the outer contours of the sleeve sections 21, 21'. Reference sign 1 charging station 2 cases 3 sockets 4 Display with controls 5 connector socket 6 charging cables 6a, b, c electrical lines for energy transmission 6d measuring leads 6e Cable sheath 7 charging plugs 8 handle 9 trough 9a upper wall of the trough 9b Cable penetration 9c, 9c' Centering pins 10 cable glands 11, 11' Cable gland parts 12 Connection flange 13 Sealing edge 14 Sealing element 15, 15' Mounting holes 16, 16' Fastening screws 17, 17' clamping holes 18, 18' clamping thread 19, 19' clamping thread projection 20, 20' Tensioning screws 21, 21' semi-cylindrical cartridge case sections 22, 22' first ring groove sections 23, 23' Positioning recesses first ring groove 24, 24' clamping ring sections 25, 25' Positioning elements clamping ring 26, 26' Equalizing fall 27, 27' second ring groove sections 28, 28' Positioning recesses second ring groove 29, 29' Rotating locking ring sections 30, 30' Positioning elements Rotation locking ring sections 31, 31' Twist projections 110 alternative cable routing 111, 111' Cable gland parts 121, 121' alternative cylindrical sleeve sections 122 first ring groove 124 clamping ring 126 equalizing jump 127 second ring groove 129 Rotating locking ring 131, 131' Twist projections H Vertical direction of cable penetration, cable penetration direction L axial longitudinal direction of the charging cable K, K' cable passage

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