Winding tool and method for winding a hose element onto a cable, as well as cable construction

Abstract

The invention relates to a pulling tool (1) for pulling a hose element (2) onto a cable (3), wherein the pulling tool (1) has a tube body (5) and retaining elements (6), each of which projects from an inner circumferential surface (7) of the tube body (5) in the direction of a longitudinal center axis (8) of the tube body (5), and a center axis (9) which, in a longitudinal section plane (II) of the tube body (5) with its longitudinal center axis (8), forms an angle (α) open towards an insertion end (10) of the tube body (5), which is greater than 0° and less than 90°. In a method according to the invention, a hose element end (19) is inserted into the tube body (5) in an insertion direction (20) along the longitudinal center axis (8) until the hose element end (19) has completely passed one of the retaining elements (6).The hose element (2) is then moved in the opposite direction of insertion (20) until the retaining element (6) establishes a force-fit and / or form-fit between the hose element (2) and the tube body (5). The tube body (5), together with the hose element end (19), is then placed onto a free cable end (24) in a pulling direction (23) and guided along the cable (3), thereby creating a cable assembly (4) that includes the cable (3) sheathed by the hose element (2).

Description

Technical field

[0001] The present invention relates to a tool for mounting a hose element onto a cable. The invention further relates to a method for mounting a hose element onto a cable, thereby producing a cable assembly comprising the cable sheathed by the hose element. The invention also relates to such a cable assembly. State of the art

[0002] In automotive manufacturing, for safety reasons, cables, especially high-voltage cables of a purely or hybrid-electric drive unit in a vehicle, are fitted with a robust sheath. This sheath protects the cable from having its electrical insulation abraded when it comes into contact with the vehicle's body, particularly its edges. Furthermore, the sheath provides additional protection against unexpected, high-impact forces, such as those encountered in a vehicle accident. Therefore, the cable needs to be encased in a particularly robust yet flexible sheath that fits snugly around the cable.

[0003] Currently, such a sleeve is manually pushed onto the outside of the cable. Since the sleeve needs to fit as snugly as possible against the cable's outer layer, such as its insulation sheath, several problems and difficulties arise when sliding it onto the cable: Firstly, the sleeve often lacks sufficient grip for a worker to apply enough force lengthwise to push it onto the cable. Secondly, the force required to slide the sleeve further along the cable increases with its length. Furthermore, the sleeve is not dimensionally stable, meaning the worker has to hold the flexible sleeve extremely firmly while simultaneously pushing the cable through it – a contradiction in itself.Currently known solutions offer little to no improvement: rubberized gloves can improve grip on the tubing, but they don't solve the problem of having to push the cable through the tubing while it's held and therefore compressed. Lubricating the cable with a suitable lubricant, such as isopropanol, prolongs the process, as the cable must first be coated with the lubricant before the tubing can be threaded onto it. It's clear that pulling the tubing onto the cable is very cumbersome and results in a particularly lengthy and time-consuming process.

[0004] Furthermore, the length of a hose consisting of a single, continuous hose section is limited; to cover longer cables with the hose, it must be divided into sections of a maximum length, which still allows the hose to slide smoothly on the outside of the cable. At the points where the hose sections meet, they must be joined, for example by wrapping the joints with adhesive tape. This adds another step to cutting the hose to length, further increasing the overall time required to slide the hose onto the cable. Moreover, these joints represent a weak point in such a conventional cable construction.Although flat, elongated structures arranged parallel to the cable and then wrapped around it along the outer circumference are easier to attach to the cable, they have disadvantages in terms of stability and reliability.

[0005] DE 202 17 147 U1 discloses a cable insertion device for facilitating the insertion of one or more cables into a cable protection sleeve with a slot along its length, wherein the cable insertion device comprises a cable guide section with a first and a second open end. Description of the invention

[0006] The purpose of the invention is to create a solution for attaching a tightly fitting hose to a cable in a particularly efficient manner.

[0007] This problem is solved by the subject matter of the independent claims. Further possible embodiments of the invention are disclosed in the dependent claims, the description, and the figures. Features, advantages, and possible embodiments set forth in the description for one of the subject matter of the independent claims are to be regarded, at least analogously, across categories and embodiments as features, advantages, and possible embodiments of the respective subject matter of the other independent claims, as well as of any possible combination of the subject matter of the independent claims, optionally in conjunction with one or more of the dependent claims.

[0008] According to the invention, a mounting tool and a method for mounting a hose element onto a cable are proposed. In the method according to the invention, the mounting tool according to the invention is used, which means that the mounting tool has means configured to perform steps of the method. Furthermore, according to the invention, a cable assembly is proposed that is produced by the method, i.e., using the mounting tool, and accordingly comprises the cable tightly sheathed with the hose element. In the cable assembly, an inner circumferential surface of the hose element rests directly against an outer surface of the cable, which is an outer surface of a sheath element of the cable.Although this document primarily refers to a flexible cable with an electrical conductor as its core, it is understood that the invention is not limited to electrical cables; instead, any type of sheathed or unsheathed cable can be covered with a sleeve using the application tool or method, for example, a fiber optic cable, a Bowden cable, a rope, a hose, etc. Furthermore, a rigid rod, for example, a pipe, a shaft, etc., can likewise be covered with a sleeve using the application tool or method, meaning that the tool and method are configured for covering a sleeve element onto an elongated object. "Elongated" here means that the object to be covered with the sleeve extends along its longitudinal mid-fiber, particularly the cable, relative to its depth and thickness.compared to whose radius / diameter is dominant. In addition, the mounting tool and the method can readily be used to mount a cable bundle, a rod bundle, or a bundle consisting of at least one flexible cable and at least one rigid rod together with a hose.

[0009] The mounting tool has a tubular body, which can be shaped like a hollow circular cylinder or a hollow prism. In this case, the longitudinal center axis of the tubular body is a straight line. The tubular body can be a flat or thin disc, where one longitudinal extent of the disc is smaller than its two transverse extents. Alternatively, the tubular body can be elongated, meaning that its longitudinal extent is greater than its two transverse extents. Furthermore, the tubular body can be formed from two or more discs. To enable the tubular body to cover a rigid, odd-shaped rod with the hose, the tubular body can be shaped with an odd shape. In this case, the term "longitudinal center axis of the tubular body" refers to an odd orientation of a longitudinal center fiber of the tubular body ("neutral fiber"). Furthermore, the tubular body of a rigid, odd-shaped rod can have a particularly small longitudinal extent.

[0010] The mounting tool also features retaining elements, each projecting from an inner circumferential surface of the tube body towards its longitudinal center axis. These retaining elements are arranged along specific circles. For example, if the tube body consists of only a thin disc, this disc may have three or more retaining elements projecting along a single circle from its inner circumferential surface. If the tube element is elongated, two or more circles with retaining elements may be arranged along the longitudinal center axis of the tube body. The retaining elements of a common circle and / or the circles themselves may be equidistant from one another.

[0011] The central axis of each retaining element and the longitudinal center axis of the pipe body form an angle in a longitudinal section plane that is greater than 0° and less than 90°. In particular, the angle measures 45° or less. The angle opens towards an insertion end of the pipe body. The longitudinal center axis of the pipe body and the central axis of each retaining element lie in the longitudinal section plane. If two retaining elements are considered that are radially opposite each other in the longitudinal section plane, the free ends of these two retaining elements, which point into a material-free interior of the pipe body, point towards the same end of the pipe body. The ends of the two opposing retaining elements are spaced apart from each other, in particular by a distance that is greater than the diameter of the cable to be supplied and less than the diameter of the hose element.In other words, the portion of each retaining element that projects freely into the interior of the pipe body is long enough that the retaining elements cannot touch the cable being routed within the hose element and therefore cannot damage it. The length of each retaining element is thus determined based on the material or wall thickness of the hose element into which the cable is to be routed. Viewed in the longitudinal plane of the pipe body, the retaining elements terminate between an outer circumferential surface of the hose element and the outer circumferential surface of the cable being routed.The intersection of the central axes of the two opposing retaining elements and their respective bases form the vertices of an imaginary isosceles triangle. The apex of this triangle is located closer to the pull-up end of the pipe body than to the insertion end, and one of the triangle's bases is located closer to the insertion end than to the pull-up end. The angle at which the angle between the pipe body's longitudinal center axis and the central axis of each retaining element opens determines which end is the insertion end and which is the pull-up end. The pull-up end and the insertion end are spaced apart along the length of the pipe body and point away from each other.

[0012] The installation tool is thus particularly advantageous for use in the process of installing the hose element onto the cable. In this process, in step S1, one end of the hose element is inserted into the installation tool along the longitudinal center axis of the pipe body, through its insertion end, in a direction of insertion. The hose element slides on the radially spaced ends of the retaining elements. The hose element end is thus inserted into the pipe body at least until it has completely passed one of the retaining elements in the insertion direction. Due to the angled arrangement of the retaining elements, the hose element experiences very little resistance to being inserted into the pipe body, making insertion particularly easy.This is because the apex of the angle formed by the respective retaining element with the longitudinal center axis of the pipe body, and with the pipe body when the hose element is inserted, points in the insertion direction of the hose element. The pulling tool and the end of the hose element are thus moved towards each other in such a way that the end of the hose element is inserted into the pipe body and / or the pipe body is pushed onto the hose element. In particular, step S1 may provide that the end of the hose element and the pipe body are moved towards each other until the hose element protrudes from the pipe body beyond the pulling end.

[0013] In step S2 of the process, the hose element is moved relative to the insertion tool in the opposite direction to the insertion direction. In other words, the hose element is partially pulled back out of the pipe body. Due to the angled arrangement of the retaining elements, the end of the hose element experiences high resistance to being pulled out of the pipe body. As a result, the outer circumferential surface of the hose element comes into direct contact with an end of the retaining element that points towards the longitudinal center axis of the pipe body, which the hose element has passed, if this contact has not already occurred during insertion.

[0014] The hose element is pulled out of the pipe body in the opposite direction of insertion until, in step S3 of the process, a force-fit and / or form-fit is established between the hose element and the pipe body, preventing further movement of the hose element relative to the pulling tool in the opposite direction of insertion. This force-fit and / or form-fit is achieved by the retaining element at least partially immersing itself in the outer circumferential surface of the hose element. The immersion of the retaining element into the hose element may, but does not necessarily, involve piercing a material of the hose element, whereby it should be understood that the piercing does not necessarily result in damage to the hose element.Instead, the retaining element can be inserted into the material of the hose element in such a way that it plunges into a mesh of the hose element, for example, between two or more threads of the hose material. In particular, it is intended that the retaining elements have a geometry and size specifically adapted to a mesh size and / or geometry of the hose element. The force-fit and / or form-fit between the hose element and the pipe body is thus mediated by the respective retaining element plunging into or immersed in the hose element. The force-fit and / or form-fit is particularly reliable if—as provided for in a possible further development—the hose element is made of a thread-based textile. This allows the ends of the retaining elements to plunge into the hose element particularly efficiently.

[0015] In step S4 of the process, the tube body, in which the hose element end is held by means of force and / or form fit, is placed onto a free cable end of the cable to be fitted in the pulling direction of the tube body or fitting tool and guided along the cable in the pulling direction. As the fitting tool is pulled along the cable in its pulling direction, the hose element is drawn behind the tube body, thereby fitting the hose element onto the cable and creating a cable assembly that includes the cable sheathed by the hose element. The hose fitted onto the cable can provide protection for the cable. Alternatively or additionally, the hose can serve as a decorative or design element for the cable.

[0016] The installation tool is particularly well-suited for at least partially automating the process. For example, the installation tool can be designed to include a connection device that allows the tube body to be connected to a machine. In such a case, a worker places the hose element and the cable into the machine, and the machine performs the process of installing the hose element onto the cable semi- or fully automatically. Furthermore, it is conceivable that the tube body can be attached to a distal end element of an industrial robot, especially an articulated robot, using the connection device as an end effector. This allows the robot to move the tube body along a path that deviates from a straight line during the installation process.This allows complexly shaped (for example, curved) elongated objects to be efficiently and automatically covered with the hose element.

[0017] In a possible further development of the process, a step S5 is performed in which the pulling tool is pulled away from the cable assembly in the opposite direction of its pulling direction and / or the cable assembly is pulled out of the pipe body in the insertion direction of the hose element. Either of these movements, individually or in combination, causes the force-fit and / or positive locking between the hose element and the pipe body to be released. This again results from the angular arrangement of the retaining elements, which allows movement of the hose element relative to the pipe body in the insertion direction. In a step S6 of the process, the pulling tool and the cable assembly are then separated from each other.

[0018] The pipe body of the pulling tool has an outer diameter larger than that of the hose element. This allows the worker to grip the pipe body particularly well and pull it along the cable with sufficient force. Optionally, the outer diameter and / or an outer surface of the pipe element can be designed so that the pipe body can be gripped, held, and / or pulled particularly efficiently with the physiological hand of an adult.

[0019] In a further possible embodiment of the method, the hose element for fitting onto the cable is provided as a single, seamless, and slit-free hose element with a length equal to or greater than the cable length. This means that the hose element does not need to be cut into smaller sections before fitting onto the cable, but can be fitted onto the cable as a whole. This is because the method allows a particularly long hose element to be easily fitted onto the cable in one piece. In particular, such a particularly long hose element is longer than 450 mm, for example, 1 m or more. Thus, the steps for cutting the hose element, fitting the hose sections separately, and joining the hose sections are eliminated due to the fitting tool.The process advantageously renders the previous method obsolete, resulting in a particularly efficient and, above all, fast installation process. Furthermore, the cable assembly is exceptionally stable and has a pleasing and aesthetic appearance, as seams or other joints of the tubular element along the length of the cable are eliminated.

[0020] According to a possible further development of the installation tool, the end of each retaining element pointing towards the longitudinal center axis of the tube body has a point. For example, the retaining element has a needle point. This further facilitates the gentle insertion of the retaining element into the tube element. This is because, either – if the tube element is made of thread-based textile – the retaining elements penetrate even small meshes particularly efficiently when creating the force-fit and / or form-fit connection, or – if the tube element is made of a continuous / closed material – the points of the retaining elements cause only minimal openings in the material.

[0021] In another possible embodiment, the longitudinal center axis of each retaining element lies in a plane formed by the longitudinal center axis of the pipe body and an inner radius of the pipe body. In other words, when considering the pulling tool along the longitudinal center axis of the pipe body, the retaining elements appear to converge radially on the longitudinal center axis of the pipe body, even though the longitudinal center axis of each retaining element is oriented obliquely relative to the longitudinal center axis of the pipe body when viewed in the longitudinal section plane. This results in the open end of the hose element being pulled radially onto the pipe body when the force-fit and / or form-fit connection between the hose element and the pipe body is established. This makes it particularly easy to insert the free cable end into the hose element, further simplifying the process of pulling the hose element onto the cable.Because the hose element is supplied on a drum, it is flat when delivered. This eliminates the need for manual widening of the hose element before inserting the cable.

[0022] In another possible embodiment, one of the retaining elements is designed as a pin driven into the tube body from the outside. Two or more such retaining elements are conceivable. For example, one such retaining element could be designed as a needle. This makes the installation tool particularly easy and inexpensive to manufacture. Furthermore, the respective retaining element can be adjusted translationally, determining how far it projects into the tube body towards its longitudinal center axis. This is because the retaining element could, for example, be designed as a screw screwed into the tube body. By turning the screw, the position of the screw tip can be adjusted as needed, particularly depending on the outer diameter of the hose element. The installation tool can thus be easily adapted to different hoses.

[0023] Another possible embodiment involves some of the retaining elements being formed by the inner bristles of a ring brush structure. In such a case, the installation tool has the ring brush structure on the inner circumferential surface of the tube body, with the inner bristles extending towards the longitudinal center axis of the tube body. Each of these inner bristles forms one of the retaining elements. Thanks to the ring brush structure, the hose element is held particularly gently within the tube body, as the inner bristles are especially flexible due to their angled arrangement when the hose element is inserted. It should be understood that the installation tool can have both a pin-shaped retaining element and the retaining elements formed by the inner bristles.

[0024] According to a possible further development approach, one or more of the retaining elements and the pipe body are formed as a single piece. Additive manufacturing is then particularly suitable for producing the mounting tool. Furthermore, it is conceivable that the pipe body, including the retaining elements, is manufactured in two or more parts, and then the parts are assembled to form the pipe body. The parts could, for example, be manufactured using injection molding.

[0025] The pipe body can, as another possible design envisions, be made of a metallic material. This makes the pipe body particularly stable and resistant to mechanical, thermal, and / or chemical influences. Alternatively, the pipe body can be made of a plastic, making it particularly lightweight and consequently especially ergonomic. Furthermore, it is conceivable that the pipe body incorporates both metallic and plastic materials to combine their advantageous properties. For example, a lightweight yet stable and durable pipe body could be created, featuring a plastic core and a thin metallic sheath.The retaining elements can be made of the same material as the pipe body or of a different material than the pipe body; in particular, the retaining elements are made of metallic material, which gives them a particularly high resistance to wear.

[0026] To make inserting the hose element into the pipe body particularly easy and efficient, another possible embodiment provides that the insertion end of the pipe body has a funnel shape that tapers towards the pull-in end of the pipe body. In this way, the hose element is aligned with the longitudinal center axis of the pipe body as the end of the hose element slides off the funnel shape while the hose element and the pipe body are moved towards each other.

[0027] For safety reasons, to prevent accidental injury with the winding tool, another possible embodiment provides for a safety tube element to be connected directly to the insertion end. Alternatively or additionally, another safety tube element is attached directly to the winding end of the tube body. Each safety tube element has a smooth inner circumferential surface and a length at least equivalent to the length of an adult finger, in particular 8 cm or more. This effectively prevents someone from accidentally inserting their finger into the tube body and injuring themselves on the retaining elements.

[0028] Further advantages, features, and details of the invention may become apparent from the following description of possible embodiments and from the drawings. The features and combinations of features mentioned above in the description, as well as those shown below in the figure description and / or in the figures themselves, can be used not only in the combinations specified, but also in other combinations or individually, without departing from the scope of the invention. Brief character description

[0029] The drawing shows in: Fig. 1 a schematic and along a longitudinal section plane II (see Fig. 2) Cutaway view of a pulling tool for pulling a hose element onto a cable, Fig. 2 a schematic view of the winding tool with a view to its winding end, Fig. 3 steps of a procedure for pulling the hose element onto the cable using the pulling tool, Fig. 4 a perspective view of a prototype of the winding tool, Fig. 5 a perspective and sectioned view of the in Fig. 4 prototypes shown and Fig. 6 A perspective view of the prototype as it is used to pull the hose element onto the cable.

[0030] In the following, a mounting tool 1 and a method for mounting a hose element 2 onto a cable 3, as well as a cable assembly 4 produced by the mounting tool 1 or the method, which comprises the cable sheathed with the hose element, are described together. In the figures, identical and functionally equivalent elements are designated with the same reference numeral. The figures also show a coordinate system that defines a longitudinal direction x and a radial direction r of the mounting tool 1.

[0031] Fig. Figure 1 shows a schematic view of the mounting tool 1, sectioned along the longitudinal plane II. It can be seen that the mounting tool 1 has a tubular body 5, which in this example is formed as a hollow circular cylinder. Furthermore, the mounting tool 1 has retaining elements 6, not all of which are labeled with the corresponding reference numeral in the figures for the sake of clarity. The retaining elements 6 each project from an inner circumferential surface 7 of the tubular body 5 towards a longitudinal center axis 8 of the tubular body 5, which is particularly evident in the enlarged view of detail area A in Figure 1. Fig. As can be seen in Figure 1, the central axis 9 of each retaining element 6 and the longitudinal axis 8 of the pipe body 5, viewed in the longitudinal section plane II (in which the longitudinal axis 8 of the pipe body 5 and the central axis 9 of each retaining element 6 lie), form an angle α greater than 0° and less than 90°. In this case, the angle α measures 45° or less and opens towards an insertion end 10 of the pipe body 5. A pull-up end 11 of the same pipe body 5 and the insertion end 10 are spaced apart along a longitudinal extension of the pipe body 5 and point away from each other. In this example, an end 12 of each retaining element 6 pointing towards the longitudinal axis 8 of the pipe body 5 has a tip 13.

[0032] From a synthesis of Fig. 1 with Fig. Figure 2 shows that an inner radius 14 of the tube body 5 lies in a plane (for example, the longitudinal section plane II) formed by the central axis 9 of the respective retaining element 6 and the longitudinal center axis 8 of the tube body 5. In other words, if one considers the mounting tool 1 along the longitudinal center axis 8 of the tube body, as in Fig. As shown in Figure 2, the retaining elements 6 appear to converge radially on the longitudinal center axis 8 of the pipe body 5, although the center axis 9 of the respective retaining element 6 when considering the longitudinal section plane II (see detail area A in Figure 2) Fig. 1) is arranged obliquely in relation to the longitudinal center axis 8 of the tube body 5.

[0033] It continues in Fig. 1. It can be seen that the retaining elements 6 and the pipe body 5 are formed in one piece in this example. In this case, both the pipe body 5 and the retaining elements 6 are made of a metallic material, such as a metal like aluminum or a metal alloy like steel. It is also conceivable that the pipe body 5 and / or the retaining elements 6 are made of a plastic.

[0034] Fig. Figure 1 also shows that, according to the example described here, a safety tube element 15 is connected directly to the insertion end 10 of the tube body 5. Furthermore, another safety tube element 16 is connected directly to the pull-up end 11 of the tube body 5. The respective safety tube elements 15 and 16 have a smooth inner circumferential surface and a length along the longitudinal center axis 8 of the tube body 5 that corresponds at least to the length of an adult's finger. In the present example, the respective lengths of the safety tube elements are 8 cm or more. Furthermore, Fig. Figure 1 shows that the insertion end 10 of the tube body 5 has a funnel shape 17, which tapers towards the pull-up end 11 of the tube body 5. Furthermore, in Fig. Figure 1 shows a handle 18 that extends radially outwards and makes it easier for a human worker to handle the winding tool 1. The handle 18 and the tube body 5 are, in particular, firmly connected to each other so that no movement of the tube body 5 relative to the handle 18 is permitted.

[0035] It will become Fig. Section 3 describes the steps of the method for pulling the hose element 2 onto the cable 3 using the pulling tool 1. For covering the cable 3, the hose element 2 is provided as a one-piece, slit-free hose element without a seam, with a length equal to or greater than the length of the cable 3. Furthermore, the hose element 2 is made of a thread-based textile, i.e., it has a mesh structure; for example, the hose element 2 is a woven hose. In step S1 of the method, a hose element end 19 is inserted into the tube body 5 through its insertion end 10 in an insertion direction 20 of the hose element 2 along the longitudinal center axis 8 of the tube body 5, relative to the pulling tool 1. During this insertion, the hose element 2 slides on the radially spaced ends 12 or tips 13 of the retaining elements 6.The hose element end 19 is inserted into the pipe body 5 until the hose element 2, or rather its hose element end 19, protrudes from the pipe body 5 beyond the pull-in end 11. This means that the hose element end 19 has completely passed the retaining elements 6. Due to the angled arrangement of the retaining elements 6, the hose element 2 experiences very little resistance when inserted into the pipe body 5, making it particularly easy to insert.

[0036] In step S2 of the process, the hose element 2 is moved relative to the mounting tool 1 or pipe body 5 in the opposite direction to the insertion direction 20, namely in a positive-locking direction 21. The hose element 2 is thus partially pulled out of the pipe body 5. Due to the angular arrangement of the retaining elements 6, the hose element 2 experiences high resistance to being pulled out of the pipe body 5. As a result, an outer circumferential surface 22 of the hose element 2 comes into direct contact with the respective end 12 or the respective tip 13 of the retaining elements 6, if this has not already occurred during insertion.

[0037] The hose element is pulled out of the tube body 5 in the form-locking direction 21 until, in step S3 of the process, a force-lock and / or form-lock is created between the hose element 2 and the tube body 5, which prevents further movement of the hose element 2 relative to the pulling tool 1 in the form-locking direction 21. This force-lock and / or form-lock is achieved by the retaining element at least partially immersing itself in the outer circumferential surface 22 of the hose element 2. Since the retaining elements 6 in this example each have the tip 13 as their end 12, the retaining elements 6 pierce the meshes of the hose element 2 when the hose element 2 is moved in the form-locking direction 21. The hose element 2 is not damaged in this process, but is nevertheless secured against further movement in the form-locking direction 21. During the formation of the force-lock and / or form-lock, the open end 19 of the hose element is pulled on radially and consequently rounded.This makes it particularly easy to insert the free cable end into the hose element, as is done in step S4 of the procedure.

[0038] In this step S4, the tube body 5, in which the hose element 2 is held by means of force and / or form fit, is placed onto a free cable end 24 of the cable 3 to be supplied in a pulling direction 23 of the tube body 5 or pulling tool 1 and guided along the cable 3 in pulling direction 23. As the pulling tool 1 is pulled along the cable 3 in pulling direction 23, the hose element 2 is pulled onto the cable 3 behind the tube body 5. This creates the cable assembly 4, which comprises the cable 3 tightly sheathed by the hose element 2.

[0039] In this example, step S5 of the process involves pulling the pulling tool 1 away from the cable assembly 4 by moving the pulling tool 1 along the cable assembly 4 in the opposite direction to the pulling direction 23, namely in a release direction 25, and / or by pulling the cable assembly 4 out of the tube body 5 in the insertion direction 20 of the hose element 2. As the pulling tool 1 away from the cable assembly 4 is pulled away, the force-fit and / or form-fit between the hose element and the tube body is released, since the retaining elements 6 are arranged at an angle as described and allow movement of the hose element 2 relative to the tube body 5 in the insertion direction 20.

[0040] In step S6 of the procedure, the mounting tool 1 and the cable assembly 4 are then separated from each other.

[0041] In Fig. Figure 4 is a prototype of the winding tool 1 in perspective view and in Fig. 5 shown in perspective and cropped views. It proceeds from Fig. 4 and Fig. Figure 5 shows that some or all – here, by way of example, all – of the retaining elements 6 can be designed as individual pins. In such a case, the pins and the tube body 5 are initially manufactured separately, with the pins or retaining elements 6 then being driven into the tube body 5 from an outer surface 26. The individual pin can be a needle, a nail, or a screw. Fig. 4 and Fig. Furthermore, it can be seen from Figure 5 that the retaining elements 6 are arranged along respective circles 27, and that the retaining elements 6 along the circumferential direction of a common circle 27, as well as the circles 27 along the longitudinal center axis 8 of the pipe body 5, are equidistant from one another. The prototype of the installation tool 1 presented here is fully functional and has nine circles 27, each with 16 retaining elements 6. These 144 retaining elements 6 are, of course, a purely exemplary number, which will be changed as required during the design / construction of the installation tool 1.

[0042] Fig.Figure 6 shows a perspective view of the prototype of the fitting tool 1 while it is being used to fit the hose element 2 onto the cable 3. It can be seen that the cable 3, which is fitted with the hose element 2, has an end block 29 at one cable end 28, which is spaced from the cable end 24 along a longitudinal extension of the cable 3. The end block 29 is, for example, an electrical and / or mechanical coupling element, such as a plug element, a socket element, etc. It can be seen that it is not necessary to move the fitting tool 1 beyond the cable end 28 or beyond the end block 29. Even in the case of a cable 3 that is already permanently installed, it is sufficient to fit the hose element 2 onto the cable if only one of the ends 24, 28 fits through the tube body 5.

[0043] The application tool 1, the method and the cable construction 4 each demonstrate a way in which a cable can be tightly sheathed or covered with a hose element in a particularly efficient manner. REFERENCE MARK LIST 1 winding tool 2 hose elements 3 cables 4 cable construction 5 pipe bodies 6 Retaining element 7 Inner perimeter area 8 Longitudinal center axis of the pipe body 9 Central axis of a restraint element 10 Introductory End 11 Wind-up end 12 End 13 top 14 inner radius 15 safety pipe element 16 safety pipe element 17 Funnel shape 18 handle 19 hose element ends 20 Insertion direction 21 Form-fit direction 22 External perimeter area 23 Winding direction 24 cable ends 25 Solution direction 26 Outside 27th district 28 Cable end 29 End block II Longitudinal section plane A detailed area α angle

Claims

[1] A pulling tool (1) for pulling a hose element (2) onto a cable (3), the pulling tool (1) comprising a tubular body (5) and retaining elements (6) each projecting from an inner circumferential surface (7) of the tubular body (5) in the direction of a longitudinal center axis (8) of the tubular body (5) and having a center axis (9) which, in a longitudinal sectional plane (II) of the tubular body (5), forms with the longitudinal center axis (8) thereof an angle (α) which is greater than 0° and less than 90° and is open in the direction of an insertion end (10) of the tubular body (5). [2] Mounting tool (1) according to claim 1, characterized by that an end (12) of the respective retaining element (6) pointing towards the longitudinal centre axis (8) of the tubular body has a tip (13). [3] Mounting tool (1) according to claim 1 or 2, characterized bythat the central axis (9) of the respective retaining element (6) lies in a plane which is formed by the longitudinal central axis (8) of the tubular body (5) and an inner radius (14) of the tubular body (5). [4] Mounting tool (1) according to one of the preceding claims, characterized by that one of the retaining elements (6) is designed as a pin which is driven into the tubular body (5) from an outer side (26) of the latter. [5] Mounting tool (1) according to one of the preceding claims, characterized by that some of the retaining elements (6) are formed by internal bristles of a ring brush structure. [6] Mounting tool (1) according to one of the preceding claims, characterized by that one or more of the retaining elements (6) and the tubular body (5) are formed integrally with one another. [7] Mounting tool (1) according to one of the preceding claims, characterized bythat the tubular body (5) is formed from a metallic material and / or a plastic. [8] Mounting tool (1) according to one of the preceding claims, characterized by that the insertion end (10) of the tubular body (5) has a funnel shape (17) which tapers towards a pull-up end (11) of the tubular body (5) which is spaced from the insertion end (10) over a length of the tubular body (5). [9] Mounting tool (1) according to one of the preceding claims, characterized by that a safety tube element (15, 16) is connected to the insertion end (10) and / or to a pull-up end (11) of the tube body (5) spaced from the insertion end (10) over a length of the tube body (5), which safety tube element has a smooth inner circumferential surface and a length which corresponds at least to the length of an adult's finger, in particular 8 cm or more. [10] Method for pulling a hose element (2) onto a cable (3) using the pulling tool (1) designed according to one of the preceding claims, wherein S1 (step 1) an end (19) of the hose element (2) is inserted into the tubular body (5) in relation to the mounting tool (1) in an insertion direction (20) of the hose element (2) along the longitudinal center axis (8) of the tubular body (5) through its insertion end (10) at least so far until the hose element end (19) has completely passed one of the retaining elements (6) in the insertion direction (20), S2 (step 2) the hose element (2) is moved in relation to the mounting tool (1) against the insertion direction (20) until S3 (step 3) a force and / or form fit is formed between the hose element (2) and the tubular body (5) by means of the retaining element (6) immersed in the hose element (2), which prevents further movement of the hose element (2) relative to the mounting tool (1) against the insertion direction (20), S4 (step 4) the tubular body (5) together with the hose element end (19) held in the tubular body (5) by means of the force and / or form fit is placed in a pulling direction (23) of the tubular body (5) onto a free cable end (24) of the cable (3) and is guided along the cable (3) in the pulling direction (23), whereby the hose element (2) is pulled onto the cable (3) and a cable construct (4) is produced which has the cable (3) sheathed with the hose element (2). [11] Method according to claim 10, characterized by , that S5 (step 5) the pulling tool (1) is pulled off the cable structure (4) in the opposite direction to its pulling direction (23) and / or the cable structure (4) is pulled out of the tubular body (5) in the insertion direction (20) of the hose element (2), whereby the force and / or form fit is released until S6 (step 6) the winding tool (1) and the cable construct (4) are separated from each other. [12] Method according to claim 10 or 11, characterized by that the hose element (2) for pulling onto the cable (3) is provided as a one-piece and slit-free hose element without a connecting seam with a length which is equal to a length of the cable (3) or longer. [13] Cable construction (4) comprising a cable (3) sheathed with a hose element (2) and produced by means of the method according to one of claims 10 to 12. [14] Cable construction (4) according to claim 13, characterized bythat the hose element (2) is made of a thread-based textile.

Images