Method for producing a cable lug, and cable lug

Abstract

The invention relates to the method for producing a cable lug (1), comprising the following successive steps: providing a metal strip and cutting the blank (2) from a metal strip. The blank (2) is in the form of a compact individual part and comprises a portion (3) for the connection of the cable lug (1) to the vehicle body and a segment (4a) for forming a portion (4) for the pressing of the cable (7), which are interconnected by a connecting portion (5). The portion (3) for the connection of the cable lug (1) to the vehicle body comprises a connection hole (3a). The method for producing the cable lug (1) also comprises the step of deep-drawing the portion (4) for the pressing of the cable (7) from the segment (4a) for forming the portion (4) for the pressing of the cable (7), the resulting portion (4) for the pressing of the cable (7) comprising a cavity (9) for the insertion of the cable (7). The invention also relates to a cable lug (1), which is in the form of a compact individual part and the connecting portion (5) of which has at least one leg (6) extending around the portion (4) for the pressing of the cable (7).

Description

Technical field

[0001] The invention relates to a cable lug for grounding the wiring harness to the vehicle body, in particular the manufacturing method of the cable lug, which enables easy integration into the process of automated manufacturing of the vehicle wiring harness. Current state of the art

[0002] Cable lugs are used to ground the electrical current by means of a conductive, waterproof connection between the wiring harness and the vehicle body. According to current technology, cable lugs are typically designed with a flat section at one end featuring an opening that allows connection to the vehicle body, for example, by means of a screw passing through this opening. This section is called the "shoe." At the other end, the cable lugs usually have a sleeve-shaped section for attaching, most often by crimping, the cable. However, the contact between the cable lug and the cable must also be sealed against moisture, which is currently achieved in production typically by using heat shrink tubing (HST).However, this solution requires time-consuming manual work, in which these tubes must be individually placed onto the cable lug and inserted into the corresponding machine. Applying hot air shrinks the tube and insulates the cable lugs.

[0003] Solutions are also known in the art that use a rubber seal (silicone seal) inserted into the hose to seal the contact against water ingress. This eliminates the time-consuming manual sealing process; however, existing cable lug solutions have a number of other disadvantages that make them difficult to approve for mass production. In particular, it is either impossible or difficult to integrate them into the automated manufacturing process of vehicle wiring harnesses, or the manufacturing of the part itself is complicated, or the cable lug has a less robust construction due to its two-part metal construction. Such a multi-part cable lug is described, for example, in patent EP1617517 B1.

[0004] A more robust solution is exemplified by the cable lug described in German patent application DE19843886 A1, which consists of a single piece of metal, namely a metal tube. The tube is crimped at one end, creating a flat end piece into which a hole is then drilled to allow connection to the vehicle body. The primary disadvantage of such a solution is that the cable lugs consist of individual, separate pieces of metal tube. However, for integration into the automated wiring harness manufacturing process, it is advantageous if the individual cable lugs are connected to each other on a strip.

[0005] The production of cable lugs connected to each other on a strip, and therefore suitable for integration into an automated process, is described in patent EP0353810 A2. The cable lugs are produced from a metal strip and are shaped to include a section for connection to the vehicle body (the lug itself) and a section for crimping the cable. However, unlike the solution described in document EP1617517 B1, these parts are not made from two separate pieces. The cable crimping section is not tubular. It only acquires its tubular shape after the actual crimping process, in which the two outer ends of the flat or partially curved material are rolled towards each other.

[0006] A similar process is described in US 4,951,389. Here, a blank is stamped with a section for attachment to a vehicle body and a flat, ribbon-shaped section for receiving a cable. To create a cavity in the cable-receiving section, the ribbon-shaped section is rolled up. Alternatively, two ribbon-shaped sections, each with two wings, can be formed. By bending the wings in opposite directions, these wings are transformed into two cavity sections. Before bending the wings of a second ribbon-shaped section, the first cavity section can be inserted into the second by bending the first. Then, when the wings of the second ribbon-shaped section are bent around the first cavity section, a single cavity section with twice the wall thickness is created.

[0007] Similar to US 4,951,389, US 3,538,239 and US 3,699,504 also disclose a method for manufacturing a cable lug with a cavity section with double the wall thickness.

[0008] US patent 2009 / 0075527 A1 shows that to create such a cavity with double wall thickness, two shells with different diameters are stacked on top of each other.

[0009] It would therefore be suitable to propose a solution of cable lugs characterized by a simple and robust design, and whose manufacturing process allows for easy integration into the automated production of vehicle wiring harnesses. At the same time, the new solution should enable the use of the standard crimping method, in which the cable lug tube is simply crimped together with the inserted cable and the seal. Description of the invention

[0010] The aforementioned disadvantages are partially eliminated by the manufacturing process of the cable lug, comprising the following successive steps: the step of providing a metal strip and the step of cutting the blank from this metal strip, wherein this blank is designed as a compact part and includes a section for connecting the cable lug to the vehicle body and a segment for forming a section for crimping the cable, which are connected to each other by a connecting section, and the section for connecting the cable lug to the vehicle body includes a connection hole, the representation of which consists inthat, furthermore, after the step of cutting the blank from the metal strip, it comprises the step of deep drawing the section for crimping the cable from the segment to shape the section for crimping the cable by applying force with a tool in a direction perpendicular to the segment surface, wherein the resulting section for crimping the cable has a cavity for inserting the cable.

[0011] The primary advantage of the present invention lies in the fact that the cable lug is manufactured from a single piece, making it sufficiently robust and easier to produce compared to a multi-part cable lug. Because the cable lug is manufactured from a metal strip, this manufacturing process can be integrated into the automated production of vehicle wiring harnesses. Furthermore, the cable lug is not sealed with heat-shrink tubing, eliminating the time-consuming manual work of manually applying the tubing to individual cable lugs. Since the section for crimping the cable is produced by deep drawing from the metal strip, the standard crimping method can be used to crimp the cable into the corresponding cavity, where this section of the cable lug is simply pressed together with the inserted cable and the seal.

[0012] Furthermore, the manufacturing process of the cable lug, after the deep-drawing step of the cable crimping section, preferably includes the step of bending the connection section relative to the cable crimping section, so that the cavity for inserting the cable opens from the cable crimping section approximately perpendicular to the axis of the connection hole. This creates a cable lug that serves to crimp the cable, with the cable running perpendicular to the axis of the connection hole. The deep drawing is carried out by a tool consisting of drawing punches and dies, wherein a force is applied by a respective drawing punch of the tool, which exerts force on a segment of the cable crimping section located at a respective die of the tool.

[0013] In the step of cutting the blank from the metal strip, at least one leg is advantageously cut out of the connecting section. This leg forms part of the compact blank and connects to the connecting section approximately perpendicular to its longest dimension. The manufacturing process of the cable lug further comprises, after the step of bending the connecting section relative to the cable crimping section, the step of bending at least one leg so that at least one leg encloses the cable crimping section. This enclosing of the cable crimping section provides additional fastening of the cable crimping section to the connecting section, resulting in an even more robust cable lug construction.

[0014] The manufacturing process for the cable lug preferably includes, either before or after the deep-drawing step of the section for crimping the cable, a step of bending the connecting section into a step shape. Bending the connecting section into a step shape offers the advantage that no deformation or bending of the cable lug occurs when it is installed on a flat body surface. Furthermore, this bending shape better accommodates the installation situation in the vehicle.

[0015] In the step of cutting the blank from a metal strip, the segment for forming a section for crimping the cable is preferably produced in the form of a disc. This shape ensures the deep drawing of a rotationally symmetrical section for crimping the cable, which also requires no further adjustments, such as cutting away excess material.

[0016] In the step of cutting the blank from the metal strip, the blank is cut in such a way that it is advantageously connected to the next blank by means of a connecting strip, the resulting product being a series of cable lugs connected to each other by connecting strips. Because the cable lugs are connected by a connecting strip throughout the entire manufacturing process, this method can be integrated into machines for the automated production of cable harnesses, resulting in significant time and cost savings.

[0017] The aforementioned disadvantages are partially solved by a cable lug comprising a section for connecting the cable lug to the vehicle body and a section for crimping the cable, which are connected by a connecting section. The section for connecting the cable lug to the vehicle body has a connection hole, and the section for crimping the cable has a cavity for inserting the cable. The cable lug is designed as a single, compact component, and the connecting section includes at least one leg that is part of the compact cable lug, with at least one leg enclosing the section for crimping the cable. The cable lug according to the invention is characterized by a robust, one-piece construction, with the legs providing additional fixation of the cable crimping section to the connecting section.

[0018] The cable lug is preferably produced by the cable lug manufacturing process according to the present invention. Explanation of the drawings

[0019] The invention is further explained by means of exemplary embodiments, which are described using drawings, showing: Fig. 1a the representation of the blank for the manufacture of a cable lug according to the first embodiment of the present invention, Fig. 1b the representation of a non-final form of the cable lug according to the first embodiment of the present invention with a section for crimping the cable in a first partial forming, Fig. 1c the representation of a non-final form of the cable lug according to the first embodiment of the present invention with a section for crimping the cable in a second partial formation, Fig. 1dthe representation of a non-final form of the cable lug according to the first embodiment of the present invention with a section for crimping the cable in the final form, Fig. 1e the representation of a non-final form of the cable lug according to the first embodiment of the present invention with a section for crimping the cable in final form and with a stepped-bent connecting section, Fig. 1f the representation of the cable lug according to the first embodiment of the present invention, Fig. 2 the representation of a series of cable lugs connected to each other by connecting strips according to the present invention, Fig. 3a the representation of the blank for the manufacture of a cable lug according to the second embodiment of the present invention, Fig. 3bthe representation of the non-final form of the cable lug according to the second embodiment of the present invention with a step-shaped bent connecting section, Fig. 3c the representation of the non-final form of the cable lug according to the second embodiment of the present invention with a step-shaped bent connecting section and with a section for crimping the cable in a partial forming, Fig. 3d the representation of a non-final form of the cable lug according to the second embodiment of the present invention with a step-shaped bent connecting section and with a section for crimping the cable in a second partial formation, Fig. 3ethe illustration of a non-final form of the cable lug according to the second embodiment of the present invention with a stepped bent connecting section and with a section for crimping the cable in a final shape, Fig. 3f the representation of the cable lug according to the second embodiment of the present invention, Fig. 4 the representation of an electrically conductive connection between the cable and the cable lug and the method of sealing the electrical contact within the cable lug according to the first embodiment of the present invention, and Fig. 5 the representation of an electrically conductive connection between the cable and the cable lug and the method of sealing the electrical contact inside the cable lug according to the second embodiment of the present invention. Exemplary embodiments of the invention

[0020] The invention will now be explained with reference to the exemplary embodiments shown in the figures.

[0021] The manufacturing method of the cable lug 1 according to the present invention, in the first embodiment, comprises the initial step of providing a metal strip, wherein the thickness of the provided metal strip is significantly smaller than its two remaining dimensions and is preferably made of copper or copper alloys. The thickness of the metal strip is selected according to the required size of the cable lug 1, taking into account the maximum current density. Preferably, the thickness of the metal strip ranges from 0.5 mm to 3.0 mm.

[0022] In the next step of this process, a blank 2 is cut from the provided metal strip. The shape of this blank is designed to enable the production of the cable lug 1 according to the present invention. The cutting of the blank 2, as well as the subsequent steps of the cable lug 1 manufacturing process, are carried out using a progressive die. The progressive die consists of drawing punches and dies, the number of which depends on the number of steps in the staged forming of the cable lug 1 from the blank 2, as well as on the thickness of the metal strip and other parameters. For a metal strip thickness of, for example, 1.0 mm to 1.5 mm, the forming process takes place in approximately 15 stages. The progressive die enables the cutting and forming of a metal strip that passes through this die in stages, so that the blanks are produced. 2 individual cable lugs 1 and then the cable lug 1even remain connected on the tape, as described in the next section of this description.

[0023] As in Fig. 1a As shown, in the first embodiment of the manufacturing process of the cable lug 1 the blank 2 is produced as a compact part, which is cut at one end by the section 3 for connecting the cable lug 1 to the vehicle body and at the other end through the segment 4a for the design of the section 4 The crimping of cable 7 is complete. Section 3 is for connecting the cable lug. 1 In the first embodiment, the attachment to the vehicle body has a flat shape and includes a connection hole. 3a , which has a circular profile and passes perpendicularly through the section 3 for connecting the cable lug 1 runs along the vehicle body. Alternatively, the section 3for connecting the cable lug 1 The design varies depending on the vehicle body; for example, it has a different shape or the attachment hole. 3a has a different profile, provided that this design allows for a reliable connection of the cable lug. 1 this is made possible, for example, by means of a screw or other connecting elements to the vehicle body.

[0024] The segment 4a for the design of the section 4 for crimping the cable 7 In the first embodiment, it has a flat circular shape, i.e., the shape of a disk, and is connected to the section 3 for connecting the cable lug 1 to the vehicle body via the connecting section 5 connected. The connecting section 5 In the first embodiment, it is realized as a metal strip, the longest dimension of which, i.e., its length, lies between the segment 4afor the design of the section 4 for crimping the cable 7 and the section 3 for connecting the cable lug 1 extends to the vehicle body. As also in Fig. 1a shown, spread from the connecting section 5 two thighs 6 in the direction perpendicular to its longest dimension and on the opposite side of the connecting section 5 from. Alternatively, it spreads from the connecting section. 5 only one thigh 6 out, provided it is long enough to extend the section after its bending. 4 for crimping the cable 7 to enclose, as described below.

[0025] In the next step, the segment will be 4a for the design of the section 4 for crimping the cable 7 the section 4 for crimping the cable7 deep-drawn. The deep drawing of the section 4 for crimping the cable 7 This is achieved by the force exerted by the tool in a perpendicular direction to the surface of segment 4a for the shaping of the section. 4 for crimping the cable 7 and is in Figs. 1b to 1d shown sequentially. This force is applied by a subsequent tool, specifically with its respective drawing die, which exerts force on the segment. 4a for the design of the section 4 for crimping the cable 7 acts on the respective drawing die of the subsequent tool. Fig. 1b shows the point in time after the start of deep drawing, with a slight pressure forming of the segment initially taking place. 4a for the design of the section 4 for crimping the cable 7 into the first partial shaping 4b of the section 4for crimping the cable 7 This occurs. From the Fig. 1b , Fig. 1c and Fig. 1d It can be seen that a stronger pressure forming of segment 4a is used to shape the section 4 for crimping the cable 7 The diameter of its circular profile decreases. Gradually, the second partial formation takes shape. 4c of the section 4 for crimping the cable 7 and the final form of the section 4 for crimping the cable 7 achieved, as in Fig. 1d depicted.

[0026] The deep-drawn section 4 For crimping the cable, part 7 has a hollow shape that provides a cavity for inserting the cable. 7 delineates the cavity 9 for plugging in the cable 7 In the first embodiment, it is rotationally symmetrical and opens at the side of the section. 4 for crimping the cable 7, where the force of the drawing die of the subsequent tool was applied. Thus, the axis of the cavity 9 for plugging in the cable 7 approximately parallel to the axis of the connection hole 3a. The cavity 9 for plugging in the cable 7 or the actual section 4 for crimping the cable 7 includes one of the openings of the cavity 9 for plugging in the cable 7 closer section with a larger diameter and one from the mouth of the cavity 9 for plugging in the cable 7 further on, with a smaller diameter. As can be seen from the Fig. 1d , Fig. 1e possibly Fig. 4 As can be seen, there is a gradually narrowing area between these two sections with different diameters. This shape makes it possible to adjust the crimping process of the cable. 7, which is described further in the text, a seal in the section with the larger diameter 8 to prevent water from entering the insulated section from the external environment 7a to arrange cable 7.

[0027] In the next step of this process, the connecting section is created using the subsequent tool. 5 bent into the shape of a step, as in Fig. 1e is shown. After this step, the connection section comprises 5 Thus, one superscript section and two subscript sections, which imaginarily divide the performed bend. The superscript section of the connecting section 5 encompasses the thighs 6 The first lowered section of the connecting section 5 is with the section 4 for crimping cable 7 and lies in the same plane as it. The second lowered section of the connection section5 is with the section 3 for connecting the cable lug 1 It is connected to the vehicle body and lies in the same plane as it. The bending of the connecting section 5 The stepped shape is achieved due to the firm fixing of the deep-drawn section. 4 for crimping the cable 7 , as will be described in detail below. Alternatively, the connecting section 5 even before the section is deep-drawn 4 for crimping the cable 7 from the segment 4a for the shaping of the section 4 for crimping the cable 7 bent into a stepped shape.

[0028] The manufacturing process of the cable lug 1 Furthermore, in the first embodiment, after the pressure forming step of the section, it includes 4 for crimping the cable 7the step of bending the connecting section 5 opposite the section 4 for crimping the cable 7 using the subsequent tool. This bending is most advantageously carried out at the point where the section 4 for crimping the cable 5 the connecting section 7 spreads out. By mutual bending of the section 4 for crimping the cable 7 and the connecting section 5 to each other, i.e. from the in Fig. 1e the first relative position shown in the Fig. 1f The second mutual position shown creates the cable lug. 1 , whose cavity 9 for plugging in the cable 7 from the section 4 for crimping the cable 7 in a direction relative to the axis of the connection hole 3 aapproximately vertical direction. The mutual bending is caused by the force exerted by the tool on the section. 4 for crimping the cable 7 realized, while the connecting section 5 and section 3 for connecting the cable lug 1 remain attached to the vehicle body. Alternatively, the section 4 for crimping the cable 7 fixed and prevents mutual bending caused by the force exerted by the tool on the connecting section 5 and section 3 for connecting the cable lug 1 This is done on the vehicle body. Due to the shape of the section described above. 4 for crimping the cable 7 and the stepped shape of the connecting section 5 These sections are in the second position according to Fig. 1f to each other's advantage, which is also the Fig. 4 can be seen from this.

[0029] In the next step, the thighs will be 6 using the follow-up tool, bent so that it forms the section 4 for crimping the cable 7 enclose, as in the Fig. 1f is shown. The thighs 6 In the first embodiment, they are designed to have a sufficient length to perform the function of additionally fixing the section. 4 for crimping the cable 7 at the connecting section 5 to fulfill the requirements, and at the same time they are not too long so that they do not overlap after bending. Alternatively, it is also possible that the legs 6 overlap, or are so long that they almost touch each other when bent. Additionally, these legs can 6 to each other or on the outer surface of the section 4 for crimping the cable 7They can be attached to ensure even more reliable fixation, for example using a laser.

[0030] In an advantageous embodiment of the cable lug manufacturing process 1 This is done in the step of cutting out the blank. 2 from a metal strip the blank 2 cut out in such a way that it fits with another blank. 2 by means of the connecting strip 10 is connected. This creates a series of interconnected blanks. 2 , which successively goes through the further steps of this procedure described above using the subsequent tool, the resulting product of this procedure being a series 11 from with connecting strips 10 interconnected cable lugs 1 is. In the first embodiment, the connecting strip 10 executed in such a way that he covers the respective sections 3for connecting the cable lug 1 to the vehicle body of the individual adjacent cable lugs 1 connects, as in Fig. 2 As shown. Alternatively, the connecting strip connects 10 other points of the individual adjacent cable lugs. 1 , provided the function of the resulting cable lugs 1 or whose production is not prevented or restricted by this design. The series 11 the one with the connecting strip 10 interconnected cable lugs 1 It can be integrated into machines for the automated production of cable harnesses, resulting in significant time and financial savings.

[0031] In the second embodiment of the manufacturing process of the cable lug 1 According to the present invention, the blank is 2 cut out with a follow-up tool in such a way that the legs 6 from the connecting section5 near the junction of the connecting section 5 and the section 3 for connecting the cable lug 1 spread it over the vehicle body, as in Fig. 3a depicted.

[0032] In the next step of this process, following the second embodiment, the connecting section is created using a subsequent tool. 5 bent into the shape of a step, as in Fig. 3b shown. After this step, the connecting section comprises 5 thus a raised section and a lowered section, which are located approximately in the middle of the length of the connecting section. 5 The performed bending is imaginarily divided. The superscript section of the connecting section. 5 is with the section 3 for connecting the cable lug 1It is connected to the vehicle body and lies in the same plane as it. This raised section of the connecting section 5 also includes the thighs 6 The lowered section of the connecting section 5 is with the section 4 for crimping the cable 7 connected and lies in the same plane as it.

[0033] In the next step of this procedure according to the second embodiment, the segment 4 a for the shaping of the section 4 for crimping the cable 7 successively the section 4 for crimping the cable 7 deep-drawn, identical to the first embodiment. The successive pressure forming of the section. 4 for crimping the cable 7 is in Figs. 3c to 3e depicted.

[0034] Alternatively, the connecting section 5into the step form first after the printing of the section 4 for crimping the cable 7 from segment 4a for the shaping of the section 4 for crimping the cable 7 bent.

[0035] In the second embodiment, the manufacturing process of the cable lug comprises 1 furthermore, after the step of pressure forming the section 4 for crimping the cable 7 the step of bending the connecting section 5 opposite the section 4 for crimping the cable 7 into the second mutual position and the step of bending the thighs 6 , again Fig. 3f can be seen from this.

[0036] The method according to the second embodiment therefore differs from the first embodiment, in particular in the specific design of the bending of the connecting section. 5into the stepped form. The first embodiment is more advantageous in this respect than the second embodiment, as it better takes into account the installation situation in the vehicle.

[0037] In another embodiment of the manufacturing process of the cable lug 1 According to the present invention, this method does not include any steps of bending the connecting section 5 relative to the section 4 for crimping the cable 7 and no bending of the thighs 6 The resulting product in this version is a cable lug. 1 , whose cavity 9 for plugging in the cable 7 in a direction relative to the axis of the connection hole 3a it flows in an approximately vertical direction.

[0038] In another embodiment of the manufacturing process of the cable lug 1According to the present invention, the bending in the step of bending the connecting section 5 relative to the section 4 for crimping the cable 7 only partially executed. That is, the section 4 for crimping the cable 7 in the direction towards the connecting section 5 It is curved, but does not lie completely against them, instead forming a certain angle with them.

[0039] In another embodiment of the manufacturing process of the cable lug 1 According to the present invention, this method does not include a step of bending the connecting section. 5 into the step form, whereby the section 4 for crimping the cable 7 is deep-drawn into a shape that also does not have a stepped shape, provided that the possible deformation of the cable lug is prevented in this design. 1This is otherwise avoided when installing on a flat body surface.

[0040] The cable lug 1 According to the present invention, in the first embodiment, illustrated in Fig. 1f , created as a compact part and includes a section 3 for connecting the cable lug 1 to the vehicle body and a section 4 for crimping the cable 7 These sections are connected by a connecting section. 5 interconnected. The section 3 for connecting the cable lug 1 In the first embodiment, it has a flat shape and includes a connection hole on the vehicle body. 3a, which has a circular profile and passes perpendicularly through the section 3 for connecting the cable lug 1 runs along the vehicle body. The section 3 for connecting the cable lug 1The connection to the vehicle body is therefore the same as in the first embodiment of the blank described above. 2 executed. Alternatively, the section 3 for connecting the cable lug 1 The design varies depending on the vehicle body; for example, it has a different shape or a different mounting hole. 3a has a different profile, provided that this design allows for a reliable connection of the cable lug. 1 this is made possible, for example, by means of a screw or other connecting elements to the vehicle body.

[0041] The connecting section 5 In the first embodiment, it is designed as a stepped, bent metal strip. The connecting section 5 It thus comprises one raised section and two lowered sections, which are imaginarily separated by the executed bend. The first lowered section of the connecting section 5is at its end with the section 4 for crimping the crimp cable 7 connected, with the section at the connection point 4 for crimping the cable 7 towards the connecting section 5 It is bent in such a way that it preferentially rests against these. The second lowered section of the connecting section. 5 is with the section 3 for connecting the cable lug 1 It is connected to the vehicle body and lies in the same plane as it. The raised section of the connecting section 5 also includes the thighs 6 , which result from the connecting section 5 in the direction perpendicular to its longest dimension and on the opposite side of the connecting section 5 spread out and are bent towards each other in such a way that they form the section 4 for crimping the cable 7 enclose.

[0042] The section 4 for crimping the cable 7 has a hollow shape that defines the cavity 9 for using the cable 7 delineates the cavity 9 for plugging in the cable 7 In the first embodiment, it is rotationally symmetrical and in the direction perpendicular to the connection hole. 3a opens, i.e., the axis of the cavity 9 for plugging in the cable 7 approximately perpendicular to the axis of the connection hole 3a is. The cavity 9 for inserting cable 7 or the actual section 4 for crimping the cable 7 includes one of the openings of the cavity 9 for plugging in the cable 7 closer section with a larger diameter and one from the mouth of the cavity 9 for plugging in the cable 7a more distant section with a smaller diameter. Such as the Fig. 1f or Fig. 4 It can be seen that between these two sections with different diameters there is a gradually narrowing area. Thanks to this shape, the section 4 for crimping the cable 7 and connecting section 5 advantageously aligned with each other, with the legs 6 the section with a smaller diameter of the section 4 for crimping the cable 7 enclose.

[0043] The thighs 6 In the first embodiment, they are designed to have a sufficient length to perform the function of additionally fixing the section. 4 for crimping the cable 7 at the connecting section 5to fulfill the requirements, and at the same time they are not too long so that they do not overlap after bending. Alternatively, it is also possible that the legs 6 overlap, or are so long that they almost touch each other when bent. Additionally, these legs can 6 to each other or on the outer surface of the section 4 for crimping the cable 7 It can be fastened to ensure even more reliable fixation, for example using a laser. Alternatively, it spreads out from the connecting section. 5 only one thigh 6 , provided it is long enough to fit the curved section 4 for crimping the cable 7 to enclose.

[0044] In a preferred design, the cable lug 1 with another cable lug 1 by means of a connecting strip 10 connected, thereby creating a series11 from by means of the connecting strip 10 interconnected cable lugs 1 arises. In the first embodiment, the connecting strip 10 executed in such a way that he covers the respective sections 3 for connecting the cable lug 1 to the vehicle body of the individual adjacent cable lugs 1 connects, as in Fig. 2 shown. Alternatively, the connecting strip connects 10 other locations of the individual adjacent cable lugs 1 , provided the function of the resulting cable lugs 1 or whose production is not prevented or restricted by this design. The series 11 the one with the connecting strip 10 interconnected cable lugs 1 It can be integrated into machines for the automated production of cable harnesses, resulting in significant time and financial savings.

[0045] In the first embodiment, the cable lug 1 according to the manufacturing process of the cable lug 1 produced according to the first embodiment. In alternative embodiments, the cable lug is 1 produced according to the manufacturing process as described in one of the further embodiments.

[0046] In the second embodiment, the cable lug 1 with a different design of the bending of the connecting section 5 created in a stepped form. Like the Fig. 5 As can be seen, this bend occurs approximately in the middle of the longest dimension, i.e., the length, of the connecting section. 5 , creating a raised and a lowered section. The raised section of the connecting section 5 follows on from the section 3 for connecting the cable lug 1It attaches to the vehicle body in such a way that it forms an extension of it and lies in the same plane as it. The lowered section of the connecting section 5 is at its end with the section 4 for crimping the cable 7 connected, with the section at the connection point 4 for crimping the cable 7 towards the connecting section 5 is bent in such a way that it preferentially rests against these. The raised section of the connecting section 5 also includes the thighs 6 , which result from the connecting section 5 in the direction perpendicular to its longest dimension and each on the opposite side of the connecting section 5, and are bent towards each other in such a way that they form the section 4 Enclose cable 7 for crimping.

[0047] The electrically conductive connection between the cable 7 and the cable lug1 , which is based on the manufacturing process of the cable lug 1 The cable, as produced according to the present invention, is crimped. 7 into the cavity 9 for plugging in the cable 7 This is ensured. Before the actual crimping process, the end section of the cable is first crimped. 7 The insulation is stripped. Then a seal 8 is inserted into the cavity. 9 for plugging in the cable 7 inserted, which advantageously supports itself internally against the area of ​​gradual narrowing and lies in the section with a larger diameter. The seal 8 includes an opening for inserting the cable 7 , which runs through its center, and is produced in an advantageous version from silicone material.

[0048] Then, through the opening in the seal 8 into the cavity 9 for plugging in the cable 7 the cable7 plugged in, specifically with the stripped section 7a of the cable 7 The stripped section 7a of the cable 7 is therefore advantageously located in the section with the smaller diameter of the section 4 for crimping the cable 7 , as in Fig. 4 or Fig. 5 is shown. The seal 8 It is designed in such a way as to prevent the ingress of water from the external environment into the insulated section. 7a of the cable 7 prevented.

[0049] The next section 4 for crimping the cable 7 with the inserted cable 7 and the seal 8 exposed to the effect of an external force that causes a deformation of the section 4 for crimping the cable 7 This results in an electrically conductive and waterproof connection between the cable. 7and the cable lug 1 is generated. A standard crimping method, familiar to experts, can therefore be used for crimping the cable.

[0050] This is because, in a preferred embodiment, the production of the cable lugs 1 so that the individual cable lugs 1 by means of a connecting strip 10 are connected to each other, the process of subsequent sealing and crimping of the cable can also be 7 on this connecting strip 10 to be realized. The series 11 the one with the connecting strip 10 interconnected cable lugs 1 It can therefore be integrated into the machines for the automated production of cable harnesses, which are well known to the expert, resulting in significant time and financial savings. Commercial applicability

[0051] The cable lug described above and its manufacturing process can also be used in industries other than the automotive industry. Reference symbol list

[0052] 1 Cable lug 2 Blank 3 Section for connecting the cable lug to the vehicle body 3a. Connection hole 4 Section for crimping the cable 4a. Segment for shaping the section for crimping the cable 4b. The first part of the section for crimping the cable 4c. The second part of the section for crimping the cable 5 Connection section 6 Leg 7 Cable 7a. Stripped cable section 8 Seal 9 Cavity for inserting the cable 10 Connecting strip 11 Row of cable lugs connected by connecting strips

Claims

1. Method for manufacturing a cable lug (1) comprising the following successive steps: the step of providing a metal strip and the step of cutting a blank (2) from the metal strip, wherein this blank (2) is configured as a compact single part and comprises a section (3) for connecting the cable lug (1) to a vehicle body and a segment (4a) for forming a section (4) for pressing a cable (7), which are connected to one another by a connecting section (5), wherein the section (3) for connecting the cable lug (1) to the vehicle body comprises a connecting hole (3a), characterized in that it further comprises, after the step of cutting the blank (2) from the metal strip, the step of deep drawing the section (4) for pressing the cable (7) from the segment (4a) to form the section (4) for pressing the cable (7) through the force action of a tool in a direction perpendicular to the segment surface of the segment (4a) to form the section (4) for pressing the cable (7), wherein the tool consists of drawing punches and drawing dies, wherein the force is exerted by a respective drawing punch of the tool which acts with force on the segment (4a) which is located on a respective drawing die of the tool, wherein the resulting section (4) for pressing the cable (7) has a cavity (9) for inserting the cable (7).

2. Method for manufacturing the cable lug (1) according to claim 1 characterized in that it further comprises, after the step of deep drawing the section (4) for pressing the cable (7), the step of bending the connecting section (5) towards the section (4) for pressing the cable (7), so that the cavity (9) for inserting the cable (7) opens from the section (4) for pressing the cable (7) approximately in a direction perpendicular to the axis of the connection hole (3a).

3. Method for manufacturing the cable lug (1) according to claim 2 characterized in that in the step of cutting the blank (2) from the metal strip, at least one leg (6) is cut out at the connecting section (5), which leg is part of the compact blank (2) and adjoins the connecting section (5) approximately perpendicular to the longest dimension of the connecting section (5), wherein the method for manufacturing the cable lug (1) further comprises, after the step of bending the connecting section (5) relative to the section (4) for pressing the cable (7), the step of bending at least one leg (6), so that this at least one leg (6) surrounds the section (4) for pressing the cable (7).

4. Method for manufacturing the cable lug (1) according to any one of the preceding claims characterized in that before the step of deep drawing the section (4) for pressing the cable (7) or after the step of deep drawing the section (4) for pressing the cable (7), it comprises the step of bending the connecting section (5) into the shape of a step.

5. Method for manufacturing the cable lug (1) according to any one of the preceding claims characterized in that in the step of cutting the blank (2) from the metal strip, the segment (4a) for forming the section (4) for pressing the cable (7) is produced in the form of a disc.

6. Method for manufacturing the cable lug (1) according to any one of the preceding claims characterized in that in the step of cutting the blank (2) from the metal strip, the blank (2) is cut out in such a way that it is connected to a next blank (2) by a connecting strip (10), wherein the resulting product is a series (11) of cable lugs (1) connected to one another by connecting strips (10).

7. Cable lug (1) comprising a section (3) for connecting the cable lug (1) to a vehicle body and a section (4) for pressing a cable (7), which are connected to each other by a connecting section (5), wherein the section (3) for connecting the cable lug (1) to the vehicle body comprises a connecting hole (3a) and the section (4) for pressing the cable (7) comprises a cavity (9) for inserting the cable (7), wherein the cable lug (1) is configured as a compact single part and wherein the connecting section (5) comprises at least one leg (6) which is part of the compact single part of the cable lug (1), wherein at least one leg (6) surrounds the section (4) for pressing the cable (7) characterized in that the section (4) for pressing the cable (7) has a deep-drawn cavity (9) which opens approximately in a direction perpendicular to the axis of the connection hole (3a) for inserting the cable (7).

8. Cable lug (1) according to claim 7 characterized in that it is manufactured by the manufacturing method for the cable lug (1) according to any one of claims 1 to 6.

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