Temporarily usable sealing element for exposed electrical conductors of a cable enclosed by electrical insulation

Abstract

Temporarily usable sealing element for exposed electrical conductors at one end of a cable enclosed by electrical insulation, wherein the sealing element (1) is formed with at least two parts and wherein a first part is designed as an internally hollow cap-shaped element (1.1) with a cavity (1.1.1) for receiving exposed electrical conductors (2.1), to which a first hollow cylindrical area (1.2) is attached, and in doing so the outer wall of the first hollow cylindrical region (1.2) with a constant outer diameter or tapering conically, or the inner wall of the first hollow cylindrical region (1.2) widening conically in the direction away from the cable end is trained, whereby at least the first hollow cylindrical area (1.2) and / or a second hollow cylindrical area (1.3) consists at least partially of an elastically deformable material and the first hollow cylindrical area (1.2) can be inserted into a second hollow cylindrical area (1.3) of a second part of the closure element (1) if the outer wall of the first hollow cylindrical area (1.2) tapers conically in the direction away from the cable end or can be attached or screwed onto the outside of the second hollow cylindrical area (1.3) if the first hollow cylindrical area (1.2) has a conically widening inner wall in the direction away from the cable end; wherein the outer wall of the second hollow cylindrical region (1.3) is conically widening in the direction away from the cavity (1.1.1), if the outer wall of the first hollow cylindrical region (1.2) is conically widening in the direction towards the cable end, such that When the first and second hollow cylindrical sections (1.3) are arranged extending from the cable end onto the electrical insulation (2.2), enclosing it, and the inner wall of the first hollow cylindrical section (1.2) or the second hollow cylindrical section (1.3) rests against the outer wall of the electrical insulation (2.2), a frictional force is exerted between the outer wall of the first hollow cylindrical section (1.2) and the inner wall of the second hollow cylindrical section (1.3), and between the inner wall of the first hollow cylindrical section (1.2) or the second hollow cylindrical section (1.3) and the outer wall of the electrical insulation (2.2), when the first hollow cylindrical section (1.2) is inserted, attached, or screwed into the second hollow cylindrical section (1.3), or when the first hollow cylindrical section (1.2) is attached or screwed onto the second hollow cylindrical section (1.3) from the outside, a frictional force is exerted between the outer wall of the first hollow cylindrical section (1.2) and the inner wall of the second hollow cylindrical section (1.3), and between the inner wall of the first hollow cylindrical section (1.2) or the second hollow cylindrical section (1.3) and the outer wall of the electrical insulation (2.2).2) of the cable (2) is achievable as a result of acting pressure forces, with which the first part can be temporarily connected to the second part of the closure element (1) and the exposed electrical conductors (2.1) can be closed in the cavity (1.1.1) and the closure element (1) can be fixed to the cable (2).

Description

[0001] The invention relates to a temporarily usable closure element for exposed electrical conductors of a cable enclosed by electrical insulation.

[0002] Conventional methods do not readily provide safe and easy-to-use protection for exposed electrical conductors at cable ends that are not enclosed by electrical insulation. In particular, protection against external water (splash protection) or moisture is only partially possible. This repeatedly leads to hazardous situations in households, mechanical engineering, automotive engineering, and electrical engineering, which can result in electric shocks, short circuits, and even fire damage.

[0003] Currently, terminal blocks, electrically insulating tapes with adhesive backing (insulating tapes), or heat-shrink tubing are commonly used. These are not entirely safe to use. Handling them during installation often presents problems. Premature detachment of the protective covering cannot always be avoided. Heat-shrink tubing suffers from similar issues due to its temperature sensitivity. Reliable protection against splashing water or moisture cannot be guaranteed in the long term.

[0004] It is also not reliably discernible from the outside whether or not there is adequate protection against an electrical voltage present on a free electrical conductor. Furthermore, the known technical solutions are susceptible to external mechanical stresses, especially vibrations.

[0005] For example, DE 41 38 407 A1 discloses a cable end closure in which a sleeve with a conical internal thread can be attached.

[0006] A closure with finger-grip wings is described in US 5,559,307 B.

[0007] US 6 677 530 B2 also specifies a screw-on cable end closure.

[0008] A tension connection for cables is described in US 2005 / 0045362 A1.

[0009] Disclosure 2016 / 0149336 A1 concerns elements for cable connection.

[0010] It is therefore an object of the invention to provide possibilities for simple, safe and easy-to-handle protection of exposed electrical conductors of electrical cables that are provided with electrical insulation, whereby improved protection against splashing water and moisture should also be provided.

[0011] According to the invention, this problem is solved with a closure element having the features of claim 1. Advantageous embodiments and further developments of the invention can be realized with features specified in dependent claims.

[0012] The closure element is formed with at least two parts. A first part is designed as an internally hollow, cap-shaped element with a cavity for receiving exposed electrical conductors, to which a first hollow cylindrical area is attached.

[0013] In a first alternative according to the invention, the first hollow cylindrical region can enclose the electrical insulation of a cable when it has been slid onto the electrical insulation of a cable from the side where the exposed ends of the electrical conductors are located. The outer wall of the hollow cylindrical region has a constant outer diameter or, preferably, tapers conically from the proximal direction with respect to the cable end where the exposed electrical conductors are located. At least the first hollow cylindrical region should consist, at least partially, of an elastically deformable material.

[0014] The first hollow cylindrical area can be inserted into a second hollow cylindrical area of ​​a second part of the closure element if the second hollow cylindrical area has been previously pushed onto the outer surface of the electrical insulation of the cable from the side on which the exposed electrical conductors are arranged.

[0015] In a second or further alternative according to the invention, the first hollow cylindrical area can be attached or screwed onto the second hollow cylindrical area from the outside, starting from the side on which the cavity is arranged.

[0016] In the second alternative according to the invention, the inner wall of the second hollow cylindrical section lies flat against the outer wall of the cable's electrical insulation. The outer wall of such a second hollow cylindrical section widens conically in the direction away from the cable end with the exposed electrical conductors. In this case, a first hollow cylindrical section of the first part can be attached to the second hollow cylindrical section from the outside, either by pushing or screwing it on. The inner wall of the first hollow cylindrical element attached to the outer wall of the second hollow cylindrical section widens conically in the direction away from the cable end.This allows the inner wall of the first hollow cylindrical element and the outer wall of the second hollow cylindrical element to lie against each other, and the contacting surfaces to be used for a force-fit connection with increased static friction.

[0017] In a further alternative according to the invention, the inner wall of the first hollow cylindrical area lies flat against the outer wall of the electrical insulation of the cable, and a second hollow cylindrical area can be attached or screwed onto the conically expanding outer wall of the first hollow cylindrical area from the outside, whereby compressive forces press the first hollow cylindrical area against the outer wall of the electrical insulation of the cable, and the connecting element can thus be fixed to the cable by friction.

[0018] In the first alternative according to the invention, the inner wall of the second hollow cylindrical area is conically tapered in the direction away from the cavity, so that when the first hollow cylindrical area is inserted into the second hollow cylindrical area or when the second hollow cylindrical area is attached or screwed onto the first hollow cylindrical area, an static frictional force effect between the outer wall of the first hollow cylindrical area and the inner wall of the second hollow cylindrical area can be achieved as a result of acting pressure forces, with which the first part can be temporarily connected to the second part of the closure element and the exposed electrical conductors in the cavity can be closed by transmitting pressure force inwards.This results in compressive forces and thus increased static friction between the outer surface of the cable's electrical insulation and the inner wall of the first hollow cylindrical section. In the second alternative, essentially only the direction of the conical shape of the inner and outer walls of the first and second hollow cylindrical sections is reversed.

[0019] The conically changing walls of the first and second hollow cylindrical sections should be inclined to each other with complementary cone angles.

[0020] In a further alternative according to the invention, an external thread can be provided on the outer wall of the first cylindrical region, onto which an internal thread, provided on the second hollow cylindrical region, can be screwed to securely fix a locking element to a cable end. When screwed on, the second hollow cylindrical region clamps the first cylindrical region, resulting in increased compressive forces between the outer wall of the first hollow cylindrical region and the inner wall of the second hollow cylindrical region. These forces generate a sufficiently high static friction between the inner wall of the first hollow cylindrical region and the electrical insulation of the respective cable.

[0021] After the two hollow cylindrical sections are attached to the cable end, and when the conical surfaces of the first and second hollow cylindrical sections are in contact, the static friction can be further increased by a clamping system that engages the outside of the second hollow cylindrical section and at least partially surrounds it. This clamping system allows external pressure to be applied to the outermost hollow cylindrical section, thereby compressing the inner first hollow cylindrical section and thus achieving a secure closure and connection of the locking element to the cable through static friction. A clamping system can be designed similarly to a tensioning strap system and / or incorporate an eccentric mechanism.

[0022] A similar effect can be achieved if at least one circumferential recess is formed on the outer wall of the first hollow cylindrical section, into which the second hollow cylindrical element can be inserted in a form-fitting manner when placed onto the first hollow cylindrical section. The inner wall of the second hollow cylindrical section and the outer wall of the circumferential recess(s) should be at least partially or partially complementary around the circumference. Advantageously, they should be designed and dimensioned in such a way that the fastening can also be easily released by pulling the second part with the second hollow cylindrical section off the first part with the first hollow cylindrical section.

[0023] Advantageously, the first part with the first hollow cylindrical section and the second part with the second hollow cylindrical section should be connected or connectable to each other by a flexibly deformable, preferably band-shaped, connecting element. This offers advantages in storage and handling, as the corresponding first and second parts can be kept together as a pair. The band-shaped element should have a length that allows for easy handling when attaching the respective closure element to a cable. The length can be chosen so that it minimizes obstruction at the cable end when fixed in place. This also applies to the unintentional removal of a closure element from a cable.

[0024] A connecting element can be particularly advantageously attached to at least the second part in a form-fitting and hinged manner, thus enabling the first part, connected to a second part by means of a connecting element, to be rotated about an axis. This is particularly advantageous in screw connections, but also when attaching or detaching parts. Strip-shaped connecting elements can be made of textile structures, preferably from plastic fibers, and attached to the first and second parts by bonding or welding. Alternatively, the connecting element can be attached by providing openings into which protrusions formed on the first and second hollow cylindrical sections can be inserted.Protrusions can have a flange that can be engaged by an opening, so that a connecting element can be positively and flexibly connected to the respective first and / or second part of a closure element.

[0025] However, they can also be trained directly during the manufacturing process. For example, they can be trained simultaneously during the production of closure elements using injection molding.

[0026] The second part of the locking element, formed by the second hollow cylindrical section, can also be made, at least partially, of an elastically deformable material. This material should preferably have a higher Shore hardness than the material used for the first hollow cylindrical section. However, in the first and subsequent alternatives, it is not strictly necessary to use an elastically deformable material. It may suffice if the second hollow cylindrical section can be pressed resiliently against the outer wall of the first hollow cylindrical section to achieve a secure fit.

[0027] The cap-shaped element can be made of a different material and is preferably bonded to the first hollow cylindrical area, for example by gluing, welding or injection molding.

[0028] The acting pressure forces not only allow the two parts of the closure element according to the invention to be held together in the area of ​​the contacting surfaces of the two hollow cylindrical areas, but also, through the associated deformation of the first hollow cylindrical area between the inner wall and the surface of the electrical insulation of the cable, an increased static friction can be achieved, thus ensuring a secure fixation of the closure element to the respective cable.

[0029] In one embodiment, for example, an outwardly projecting ridge can be formed on the cap-shaped element, to which the first hollow cylindrical section adjoins. An angled, nose-shaped element can be formed on the ridge, which, when the first hollow cylindrical element is inserted into a recess or depression formed on the outer wall of the second hollow cylindrical element, can engage and act as a travel limiter and locking mechanism. Advantageously, this also allows it to be seen from the outside that both parts of the closure element are securely connected. Particularly in the second alternative according to the invention, a nose-shaped element and a recess or depression can also be arranged at a different location that is accessible and suitable for connecting the first and second parts. This can be the case, for example, on the first and second hollow cylindrical sections.

[0030] It is particularly advantageous for the conically shaped outer wall of the first hollow cylindrical section and / or the inner wall of the second hollow cylindrical section to be stepped or sawtooth-shaped. If both surfaces facing each other in the two sections are stepped or sawtooth-shaped, a positive fit can be used for fixation in addition to static friction.

[0031] To improve protection against external moisture or splashing water, at least one O-ring can be positively engaged between the outer wall of the first hollow cylindrical section and the inner wall of the second hollow cylindrical section, and / or between the inner wall of the first hollow cylindrical section and the outer wall of the cable insulation. This O-ring provides a better seal when the first hollow cylindrical section is inserted into the second. For this purpose, a circumferential groove can be formed on the surface of the outer wall of the first hollow cylindrical section and / or the inner wall of the second hollow cylindrical section, into which an O-ring can be inserted. Alternatively, an O-ring can engage and be held in a shoulder or serration on a correspondingly conical surface of the first and / or second hollow cylindrical section.

[0032] In a further advantageous embodiment, an external thread can be formed on the outer wall of the second hollow cylindrical area, onto which a fastening element, such as a nut for clamping the second hollow cylindrical area to the first hollow cylindrical area, can be screwed, so that increased compressive forces then act on the outer and inner walls of the two hollow cylindrical areas and the outer surface of the electrical insulation of the cable due to the screwed-on nut.

[0033] The cap-shaped element within the cavity can also contain multiple chambers or channels, each designed to accommodate a single exposed end of an electrical conductor. The exposed ends can be inserted into a separate cavity or channel when the first hollow cylindrical section is inserted into the interior of the second hollow cylindrical section. This allows for the simple and permanent prevention of electrical short circuits.

[0034] This can also be achieved by providing, in one embodiment, guide elements at the distal end of the first hollow cylindrical section (relative to the cable) and / or at the proximal section of the cap-shaped element to separate the exposed ends of the electrical conductors within the cavity. Such guide elements can, for example, be groove-shaped recesses formed inside the cap-shaped element, each containing a free end of an electrical conductor. Alternatively, this can be achieved with differently arranged and dimensioned protrusions, over which a portion of an electrical conductor is guided with its free end, ensuring that the exposed ends are positioned and held sequentially at a sufficiently large distance from one another.The free ends can be positioned next to each other or one after the other at a distance, for example if the elevations have different radii.

[0035] The cap-shaped element can also be optically transparent, at least in some areas, in the visible light range, so that the cavity can be viewed from the outside and it can be checked whether the free ends of the electrical conductors have been arranged or positioned securely when the sealing element has been fixed to the cable.

[0036] This can also be achieved with at least one element that can be positively fixed to the cap-shaped element and is temporarily removable. The removable element can be designed, alone or additionally, as an optically transparent window for inspection. The removable feature also allows for subsequent manual correction of the positioning of the free ends of the electrical conductors from the outside. After correction, the removable element can be reattached.

[0037] Colored markings may also be applied to or present on the first and / or second hollow cylindrical section in such a way that they become visible from the outside when the first hollow cylindrical element is securely fixed to the second hollow cylindrical section on the electrical insulation of the cable. This allows, for example, easy verification that the locking element has been securely and firmly attached to the cable.

[0038] It is also possible that structural elements, preferably in the form of gecko-like structural elements, are formed on the outer wall of the first hollow cylindrical area and / or the inner wall and / or outer wall of the second hollow cylindrical area, with which an increase in the adhesive effect of the closure element on the outer wall of the electrical insulation of the respective cable can be achieved.

[0039] The invention provides a safe, easy-to-use, and cost-effective protection for exposed ends of electrical conductors in cables, which can also offer protection against splashing water and moisture. The secure closure can be detected primarily by touch during closing, but in some embodiments also by sound and sight.

[0040] It is even conceivable to provide a sensor that can signal an electrical contact between exposed ends of electrical conductors or between them and other electrically conductive elements.

[0041] The invention will be explained in more detail below by way of example.

[0042] This shows: Fig. 1 in schematic form a first example of a closure element according to the invention according to the first alternative; Fig. 2 in schematic form a second example of a closure element according to the invention according to the first alternative; Fig. 3 in schematic form a third example of a closure element according to the invention according to the first alternative and Fig. 4. An example according to a design described in the general description as a further alternative.

[0043] In the examples shown, identical elements are designated with the same reference numbers. Features shown and subsequently explained in the individual figures can be combined independently of the specific example or figure and are not tied to any particular example or figure.

[0044] In Fig. Figure 1 shows an example of a two-part closure element 1. To close the closure, a part formed with a second hollow cylindrical section 1.3 is first slid onto the outer surface of the electrical insulation 2.2 of the cable 2 from the side where the exposed ends of the electrical conductors 2.1 are located, so that the electrical insulation 2.2 is enclosed by the second hollow cylindrical section 1.3. In this example, the inner wall of the second hollow cylindrical section 1.3 tapers conically in the distal direction from the exposed ends of the electrical conductors 2.1.

[0045] Following this sliding or attaching, the second part of the closure element 1, which comprises a cap-shaped element 1.1 forming the cavity 1.1.1 for receiving the exposed ends of the electrical conductors 2.1 and the first hollow cylindrical section 1.2, is inserted between the outer surface of the electrical insulation 2.2 of the cable 2 and the inner wall of the second hollow cylindrical section 1.3. In this example, the inner wall of the first hollow cylindrical section 1.2 is also conical, specifically conically shaped to complement the conical shape of the second hollow cylindrical section 1.3, with a corresponding cone angle.

[0046] Due to the conical shape of the two hollow cylindrical sections 1.2 and 1.3, the inner wall of the second hollow cylindrical section 1.3 and the outer wall of the first hollow cylindrical section 1.2 gradually approach each other and then come into contact. As the first hollow cylindrical section 1.2 moves, increasing pressure forces act as a result of the contact between the two hollow cylindrical sections 1.2 and 1.3 and the relative movement between them, so that the second hollow cylindrical section 1.3 is pressed against the first hollow cylindrical section 1.2, and the latter against the outer surface of the electrical insulation 2.2 of the cable 2, and the locking element 1 is consequently fixed to the cable 1 by means of static friction.

[0047] It can be advantageously utilized that the first hollow cylindrical section 1.2 is formed from or with an elastically deformable material. The second hollow cylindrical section 1.3 can also be elastically deformable, but this is not mandatory. If it is formed with an elastically deformable material, this material should have a higher Shore hardness than the material used to form the first hollow cylindrical section. This allows greater compressive forces to act in the direction of the electrical insulation 2.2, thereby achieving greater static friction.

[0048] In this example, as well as in other examples, at least one of the two conically shaped surfaces of the hollow cylindrical areas 1.2 and 1.3 can also be stepped or sawtooth-shaped, so that in addition to static friction, positive locking can also be used for connection and fixation.

[0049] Also not shown is the possibility of safely separating the individual exposed ends of the electrical conductors 2.1 from each other within the cavity. For this purpose, partitions can be provided inside the cap-shaped element 1.1, forming chambers or channels into which an exposed end of an electrical conductor 2.1 can be individually inserted and electrically insulated from other exposed ends in order to prevent electrical short circuits.

[0050] To monitor whether this has been successful or not, at least the entirety or a portion of the cap-shaped element 1 can be made of an optically transparent material or covered by a removable cap, so that it can be visually checked from the outside whether everything has been properly closed and securely arranged.

[0051] The in Fig. The example shown is further designed such that a radially circumferential rib 1.4 is present on the first part of the closure element 1 between the cap-shaped element 1.1 and the first hollow cylindrical section 1.2. A nose-shaped area 1.4.1 is formed on the rib 1.4, which, after the first hollow cylindrical section 1.2 is fully inserted into the second hollow cylindrical section 1.3, engages in a complementary recess 1.3.1 formed on the outer wall of the second hollow cylindrical section 1.3, thereby positively connecting the two sections 1.2 and 1.3. Both the nose-shaped area 1.4.1 and the recess 1.3.1 can be radially circumferential or individually arranged as points.

[0052] An improved seal can be achieved (not shown) by arranging at least one O-ring between the outer wall of the first hollow cylindrical section 1.2 and the inner wall of the second hollow cylindrical section 1.3. This O-ring can be positively engaged in correspondingly arranged groove-shaped recesses or between steps of a stepped conical design.

[0053] The in Fig. The second example shown differs from the example shown after... Fig. 1 essentially by the fact that an external thread 1.3.2 is formed on the outer wall of the second hollow cylindrical section 1.3, onto which a nut 4 can be screwed. By screwing the nut 4 on distally from the side of the cable 2 on which the exposed electrical conductors 2.1 are arranged, a continuously increasing compressive force can be exerted from the outside on the second hollow cylindrical section 1.3, the first hollow cylindrical section 1.2 and the outer surface of the electrical insulation 2.2 of the cable 2, which can improve the sealing and fixation.

[0054] In a form not shown, the nut 4 can also be designed as a screw element with a web arranged internally on one side, which engages a web 1.4 that lies between the cap-shaped element 1.1 and the first hollow cylindrical area 1.2 and thereby moves the first hollow cylindrical area 1.2 distally when the nut 4 is screwed in, thus additionally influencing the pressure force positively for sealing and fixing.

[0055] With Fig. Section 3 is intended to illustrate that a cap-shaped element 1.1 can also be used, which has an enlarged cavity 1.1.1, for example, due to an increased diameter in at least one plane. Fig. In the embodiment shown in Figure 3, the exposed electrical conductors 2.1 can be arranged along the inner wall of the cap-shaped element 1.1 in such a way that no electrical short circuit can occur between the exposed ends of the electrical conductors 2.1. This can be achieved, for example, by means of differently dimensioned projections on the inner wall of the cap-shaped element 1.1 (also not shown), so that the exposed ends of the electrical conductors 2.1 are arranged at different distances from the end of the cable 2 and thus cannot touch each other.

[0056] In particular, a form-fitting and temporarily removable element can be provided on such an enlarged cap-shaped element 1.1. This allows, after removal, an external view of the position of the exposed ends of the electrical conductors 2.1 inside the cavity 1.1.1, and, if necessary, manual intervention to influence their positioning as desired. The removable element can then be reattached to the cap-shaped element 1.1 in a form-fitting manner.

[0057] The in Fig. The example shown in Figure 3 can be fixed to the electrical insulation 2.2 of cable 2 in the same way as in the examples after. Fig. 1 and Fig. 2 is possible.

[0058] The in the Fig. The examples shown in Figures 1 to 3 can also be configured according to the second alternative. In these cases, only the second hollow cylindrical section 1.3 is arranged with its inner wall against the outer wall of the electrical insulation 2.2 of the cable 2, and the first part 1 is attached to the second hollow cylindrical section 1.3 from the outside with its first hollow cylindrical section 1.2. The conical shape of the two hollow cylindrical sections 1.2 and 1.3 is chosen to be exactly the opposite of the embodiment shown.

[0059] In Fig. Figure 4 shows an example in which a first part with a first hollow cylindrical area 1.2 and a cap-shaped element 1.1 enclosing a cavity 1.1.1 can be attached to the end of a cable 2, as has already been described in the other examples.

[0060] To secure the locking element 1 to the cable 2, after the first part has been attached to the electrical insulation 2.2, the second hollow cylindrical section 1.3 can either be attached or screwed on. For this purpose, an external thread 1.2.2 can be formed in a region of the outer wall of the first hollow cylindrical section 1.2 and an internal thread in the inner wall of the second hollow cylindrical section 1.3. These can be screwed together to achieve the force effect already described, which leads to increased friction and secure fixation of the locking element 1 to the cable 2.

[0061] This example can also be designed and used such that a circumferential recess 1.2.4 is provided in a region of the outer wall of the first hollow cylindrical section 1.2. When the second hollow cylindrical section 1.3 is attached, it can engage in the recess 1.2.4, achieving a positive-locking connection between the second part and the first part of the closure element 1. The inner wall of the second hollow cylindrical section 1.3 is contoured accordingly. Furthermore, the inner and outer diameters are adapted accordingly.

[0062] A groove-shaped recess 1.2.4 can also facilitate the handling of the locking element 1, especially when attaching the first hollow cylindrical area 1.2 to the outer electrical insulation 2.2 of the cable 2, as it provides an improved grip for the fingers.

[0063] In the example shown, an outwardly projecting rib 1.2.3 is present at the distal end of the first hollow cylindrical section 1.2, which also improves handling. It can also function as an end stop for a second hollow cylindrical section 1.3.

[0064] At the in Fig. In the four examples shown, the first and second parts are connected by a band-shaped element 3. This ensures that the first and second parts can be identified. Band-shaped elements 3 can, of course, also be present in the other examples in an analogous form.

Claims

[1] Temporarily usable closure element for exposed electrical conductors at one end of a cable enclosed by electrical insulation, wherein the closure element (1) is formed with at least two parts and wherein a first part is designed as an internally hollow cap-shaped element (1.1) with a cavity (1.1.1) for receiving exposed electrical conductors (2.1), to which a first hollow cylindrical area (1.2) is attached, and in doing so the outer wall of the first hollow cylindrical region (1.2) with a constant outer diameter or tapering conically, or the inner wall of the first hollow cylindrical region (1.2) widening conically in the direction away from the cable end is trained, whereby at least the first hollow cylindrical area (1.2) and / or a second hollow cylindrical area (1.3) consists at least partially of an elastically deformable material and the first hollow cylindrical area (1.2) can be inserted into a second hollow cylindrical area (1.3) of a second part of the closure element (1) if the outer wall of the first hollow cylindrical area (1.2) tapers conically in the direction away from the cable end or can be attached or screwed onto the outside of the second hollow cylindrical area (1.3) if the first hollow cylindrical area (1.2) has a conically widening inner wall in the direction away from the cable end; wherein the outer wall of the second hollow cylindrical region (1.3) is conically widening in the direction away from the cavity (1.1.1), if the outer wall of the first hollow cylindrical region (1.2) is conically widening in the direction towards the cable end, such that When the first and second hollow cylindrical sections (1.3) are arranged extending from the cable end onto the electrical insulation (2.2), enclosing it, and the inner wall of the first hollow cylindrical section (1.2) or the second hollow cylindrical section (1.3) rests against the outer wall of the electrical insulation (2.2), a frictional force is exerted between the outer wall of the first hollow cylindrical section (1.2) and the inner wall of the second hollow cylindrical section (1.3), and between the inner wall of the first hollow cylindrical section (1.2) or the second hollow cylindrical section (1.3) and the outer wall of the electrical insulation (2.2), when the first hollow cylindrical section (1.2) is inserted, attached, or screwed into the second hollow cylindrical section (1.3), or when the first hollow cylindrical section (1.2) is attached or screwed onto the second hollow cylindrical section (1.3) from the outside, a frictional force is exerted between the outer wall of the first hollow cylindrical section (1.2) and the inner wall of the second hollow cylindrical section (1.3), and between the inner wall of the first hollow cylindrical section (1.2) or the second hollow cylindrical section (1.3) and the outer wall of the electrical insulation (2.2).2) of the cable (2) is achievable as a result of acting pressure forces, with which the first part can be temporarily connected to the second part of the closure element (1) and the exposed electrical conductors (2.1) can be closed in the cavity (1.1.1) and the closure element (1) can be fixed to the cable (2). [2] Locking element according to claim 1, characterized by, that an outwardly pointing rib (1.4), to which the first hollow cylindrical area (1.2) or the second hollow cylindrical area (1.3) is connected, is formed, on which an angled nose-shaped element (1.4.1) is formed, which, when the first hollow cylindrical area (1.2) is inserted into the second hollow cylindrical area (1.3) or when the first hollow cylindrical area (1.2) is attached or screwed onto the second hollow cylindrical area (1.3), engages in a recess or depression (1.3.1) on the outer wall of the second hollow cylindrical area (1.3) that is complementary to the nose-shaped element (1.4.1) and thereby acts as a path limiter and locking device. [3] Locking element according to one of the preceding claims, characterized by, that the conically shaped outer walls of the first hollow cylindrical area (1.2) and / or the inner wall of the second hollow cylindrical area (1.3) is / are stepped or sawtooth shaped. [4] Locking element according to one of the preceding claims, characterized by , that at least one O-ring is arranged in a form-fitting manner between the outer wall of the first hollow cylindrical area (1.2) and the inner wall of the second hollow cylindrical area (1.3) and / or the inner wall of the first hollow cylindrical area (1.2) or of the second hollow cylindrical area (1.3) and the outer wall of the electrical insulation (2.2) of the cable (2) when the first hollow cylindrical area (1.2) is inserted into the second hollow cylindrical area (1.3). [5] Locking element according to any one of the preceding claims, characterized by, that an external thread (1.3.2) is formed on the outer wall of the first or second hollow cylindrical area (1.2 or 1.3), onto which a screw element (4) can be screwed for clamping the second hollow cylindrical area (1.3) to the first hollow cylindrical area (1.2). [6] Locking element according to any one of the preceding claims, characterized by , that an external thread (1.2.2) is provided on the outer wall of the first hollow cylindrical area (1.2), onto which an internal thread (1.3.3) provided on the second hollow cylindrical area (1.3) can be screwed. [7] Closure element according to any one of claims 1 to 5, characterized by , that at least one circumferential recess (1.2.4) is formed on the outer wall of the first hollow cylindrical area (1.2), into which the second hollow cylindrical area (1.3) can be inserted in a form-fitting manner when placed on the first hollow cylindrical area (1.2). [8] Locking element according to one of the preceding claims, characterized by , that the first part with the first hollow cylindrical area (1.2) and the second part with the second hollow cylindrical area (1.3) are connected or connectable to each other by a flexibly deformable, preferably band-shaped, connecting element (3). [9] Locking element according to any one of the preceding claims, characterized by , that in the cap-shaped element (1.1) in the area of ​​the cavity (1.1.1) there are several chambers or channels for receiving a single exposed end of an electrical conductor (2.1). [10] Locking element according to any one of the preceding claims, characterized by , that the cap-shaped element (1.1) is optically transparent at least in some areas in the visible light range. [11] Locking element according to any one of the preceding claims, characterized by, that at the distal end of the first hollow cylindrical area (1.2) in relation to the end of the cable (2) and / or at the proximal area of ​​the cap-shaped element (1.1) there are guide elements for separating the exposed ends of the electrical conductors (2.1) within the cavity (1.1.1). [12] Closure element according to any one of the preceding claims, characterized by , that at least one element which can be fixed to the cap-shaped element (1.1.1) in a form-fitting manner and which can be temporarily removed is present. [13] Closure element according to one of the preceding claims, characterized by , that colored markings are attached or present on the first and / or second hollow cylindrical area (1.2, 1.3) in such a way that they become visible from the outside when the first hollow cylindrical area (1.2) is securely fixed to the electrical insulation (2.2) of the cable (2). [14] Locking element according to one of the preceding claims, characterized by , that structural elements, preferably in the form of gecko-like structural elements, are formed on the outer wall of the first hollow cylindrical area (1.2) and / or the inner wall and / or outer wall of the second hollow cylindrical area (1.3), with which an increase in the adhesive effect of the closure element (1) on the outer wall of the electrical insulation (2.2) of the respective cable (1) can be achieved.

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