Cable lug with a connecting section and connection between a cable lug and a connecting part

Abstract

The invention relates to a cable lug (1) with a connecting section (4) for a cable (2) and a flat part connecting section (5) having a bore (11) with a longitudinal axis (x), wherein the flat part connecting section (5) has a first flat region (15) forming a first thickness (c) and an outer edge (23) with a first outer surface (9), and a second, annular flat region (16) with a second outer surface (18) designed as an electrical contact surface, wherein the second outer surface (18) of the second flat region (16), which is preferably designed from the same material as the first flat region (15), is offset from the first outer surface (9) by a first offset dimension (a).In order to advantageously further develop a cable lug of the type in question, it is proposed that the flat-part connecting section (5) has a second thickness (g) in the region of the second flat region (16), which second thickness is composed of the first thickness (c) and the first offset dimension (a), wherein the first offset dimension (a) can vary across the width of the second flat region (16). The invention also relates to a connection between a cable lug (1) and a connecting part (7).

Description

Field of TechnologyThe invention relates to a cable shoe having a connection section for a cable and a flat part connecting section having a bore with a longitudinal axis, wherein the flat part connecting section has a first flat region forming a first thickness and an outer edge with a first outer surface and a second, annular flat region with a second outer surface formed as a contact surface, wherein the second outer surface of the second flat region, which is preferably formed materially uniformly with the first flat region, is offset with respect to the first outer surface by a first offset amount.The invention further relates to a connection between a cable lug and a connecting part.Prior ArtCable terminals of the type in question are known, as are connections between such a cable terminal and a connecting part. For example, reference is made to DE 10 2016 100 978 A1.The second outer surface of the second flat region offset by the offset amount relative to the first outer surface of the first flat region in the known cable lug in the direction of the longitudinal axis is formed at a lowering of the flat part connecting section. The second outer surface forming a contact surface is combined with a correspondingly recessed surface opposite the second outer surface. This makes it difficult to use it as desired with regard to many fields of application.A connecting part can be, for example, a further cable lug connected to an electrical cable or alternatively, for example, a connection of an accumulator or a starter battery in a motor vehicle.SUMMARY OF THE INVENTIONWith regard to the above-described prior art, the object is to advantageously configure a cable lug and a connection between a cable lug and a connecting part.A possible solution to the object is provided according to a first inventive concept in a cable lug in which it is aimed at the flat part connecting section having a second thickness in the region of the second flat region, said second thickness being composed of the first thickness and the offset dimension, wherein the first offset dimension can be given differently over a width of the second flat region.The second thickness is correspondingly greater than the first thickness. A thickness range can result in a section of the flat part connecting section, in which the second flat region, in a projection along the longitudinal axis, is overlapped with the first flat region of the flat part connecting section adjoining the latter in one piece in the axial direction. The flat part connecting section is accordingly thickened in this region, viewed in the direction of the longitudinal axis, but at least in a subsection of the width of the overall annular second flat region, substantially by the axial height dimension of the second flat region. The surface opposite the second outer surface, also referred to as a third outer surface below, may be spaced apart from the second outer surface by a distance according to the second thickness. The third outer surface can be used favorably as an electrical contact surface. No particular or substantial adjustment of a connecting element, which is to be in contact with the third outer surface, for example, is required.The flat part connecting section is formed electrically conductive overall. It can be a uniform and materially uniform metallic material. However, these may also be partial regions composed of different metallic materials.The first offset dimension may have different first offset dimensions over different radial widths of the second flat region in a cross section through the second flat region, in which cross section the longitudinal axis is represented as a line. Thus, for example, a contact surface of the second flat region can be produced which extends with respect to the longitudinal axis in a cross section completely or in sections conically or spherically arched, wherein a greatest first offset dimension together with the first thickness defines the second thickness to a decisive extent.A conical or spherical configuration of the contact surface is particularly advantageous in cases where only a small, limited installation space results. Also, a larger current transmission surface can be achieved by the conical or spherical contact surface configuration.An annular flat region is not to be understood exclusively as an outer contour which necessarily follows a constant radius along the circumference. The ring shape can also result, for example, only in the region of the flat region directly surrounding the bore, wherein the outer contour of the flat region can also be formed differently from a circular contour, thus further, for example, oval or polygonal.The second flat region can further preferably be completely overlapped with the first flat region of the flat part connecting portion, as viewed in the axial direction.In an advantageous manner, the first flat region forms at least a partial region of the bore inner surface in this thickness region. A further partial region of this inner surface can be formed by the second flat region.The second flat region has the second outer surface, which preferably extends transversely to the longitudinal axis or runs at an acute angle to the longitudinal axis or, as noted, for example extends spherically, and which can surround the bore, for example as an annular surface, further for example as a circular ring, circular dome or circular cone surface. In this case, a substantially rectangular cross section can also be produced in the second flat region, with a width running in the direction perpendicular to the longitudinal axis, which width can correspond, for example, at least to the offset dimension between the first and the second outer surface as viewed in the direction of the longitudinal axis.(Details of the coding in general?)With regard to the connection between such a cable lug and a connecting part, according to a further inventive concept, it can be pointed out that the connecting part is of complementary design with regard to the features of the one coding or of the plurality of codings of the cable lug.Due to the complementary configuration of cable shoe-side coding and connecting part-side counter coding, a clear assignment can be achieved during the production of a connection of cable shoe and connecting part. Thus, according to a possible embodiment, only matching partners with respect to the encodings can first be connected to one another. Furthermore, by coding the partners, it is also possible, for example, to achieve a required rotational alignment relative to one another about the longitudinal axis of cable lug and further connecting part. In this way, it can be achieved that beyond the mere proper assignment of the connection partners, their proper alignment with respect to one another is also provided.Coding and counter coding can form joining partners during the production of the connection.Further features are explained below, also in the description of the figures, often in their preferred assignment to the solution described in principle and / or the solutions described in principle further or to further features. However, they can also be important in an assignment to only individual features already described or to the respective further described feature or in each case independently.Thus, in a further embodiment, the first flat region can have a fourth outer surface which is formed opposite and in the same direction as the first outer surface. The fourth outer surface can extend aligned parallel to the space of the first outer surface.The second flat region can also have a third outer surface which can be formed opposite the second outer surface. As a result of this further possible configuration, differently configured flat part connecting sections can be present. The third outer surface can initially extend, for example, in the same plane as the fourth outer surface. However, it can also extend offset outwards from the fourth outer surface by a second offset amount or else extend upwards starting from the fourth outer surface.Advantageously, in particular in the case of a course of the third outer surface corresponding to the second offset dimension, an expansion of the areas of application of a cable lug of this type is achievable. By forming two second and third outer surfaces in the second flat region, which are provided at the end of the bore in the direction of the longitudinal axis and extend in a raised and / or rising manner with respect to the outer surfaces of the first flat region, different configurations can be produced with regard to different application forms of the cable lug.Accordingly, a flat part connecting portion can result which, starting from a central plane of the flat part connecting portion in the region of the second flat region, has a second thickness along the longitudinal axis which is greater than the first thickness and corresponds to the first offset dimension.In a further embodiment, the bore can also be a stepped bore, having a first bore section of smaller diameter and a second bore section of larger diameter, which second bore section is formed axially offset with respect to the first bore section, wherein the first flat region forms part of the inner surface of the first bore section.Furthermore, in this context, it can be provided that the second flat region forms part of the inner surface of the second bore section. The second flat region can accordingly delimit the section of the bore which may be larger in diameter.In addition, the bore is preferably designed as a cylinder bore. If a stepped bore is provided, the bore sections are preferably also each designed as a cylinder bore.The offset dimension, viewed in the direction of the longitudinal axis, between the second or third outer surface and the facing first or fourth outer surface of the first flat part can furthermore be selected such that it corresponds, for example, to approximately 0.5 times or more, up to, for example, approximately 2 times or more, of the radius dimension of the bore in the region of the cross section of the first flat region. The width of the second flat region, as viewed in cross section in the radial direction, can furthermore correspond, for example, to approximately 1.1 times or more up to, for example, approximately 1.3 times or approximately 2 or 2.5 times or more of the aforementioned bore radius.According to a possible further development, it can also be provided that the cable lug consists of a brass material. Brass is distinguished by good electrical conductivity with high mechanical stability.In particular, the second flat region can be formed, for example, by a forming process, further, for example, by a cold forming process. Such a plastic deformation can be achieved by means of high pressure, for example on the regions of the flat part connecting portion adjacent or surrounding the second flat region to be produced, wherein a solidification of the material can result in the regions treated under pressure. This can further lead to an improved stability of the cable lug overall, but at least in the region of the flat part connection section. Usually, both the second and the first flat region can be shaped in the manner.The second flat region, which is essential for the conductive connection to a (further) connection part and can be shaped in a particular manner as described, can also be formed from a different metallic material than the first flat region. For example, the second flat portion may be formed of copper and the first flat portion may be formed of brass, aluminum, steel, or the like. The latter materials are also suitable in principle for the second flat region. In such a case, the connection between the flat regions can also be provided by a press connection in addition to welding or soldering. With regard to this composition of different metallic materials, the first and the second flat region-in contrast to the understanding still described below with regard to the geometric design-are understood to be a continuous region in the axial direction.In this connection, with regard to a shaping of the second flat region, the aforementioned brass material has proven to be particularly advantageous with regard to a possible cold or also hot deformation in this regard.The resulting second flat region is further preferably designed and arranged such that it does not project into an opening area of the bore projected along the longitudinal axis in the region of the flat part connecting section in the first flat region, i.e. it influences a bore diameter for instance.The bore can also continue through the flat part connecting section with preferably constant radius dimension in the direction of the longitudinal axis through the second flat region. A continuous smooth-walled, step-free bore can correspondingly be produced, which passes through the second flat region and the first flat region of the flat part connecting section.It can be the case that the second flat region extends completely radially outside the bore cross section viewed transversely to the longitudinal axis.The two flat regions of the flat part connection section and / or the connection section can be comprised, for example, by an electrically insulating material. Such a material can be provided by a separately produced part, for example produced by the plastics injection moulding process, which is drawn over the metal cable lug. The metallic, electrically conductive cable lug can also be directly encapsulated by injection molding using such an electrically insulating material.In the case of a formation of two opposing second and third outer surfaces of the second flat region, these outer surfaces can have equal amounts of offset compared to the first and fourth outer surfaces of the first flat region, as viewed in the direction of the longitudinal axis. In this case, the second and third outer surfaces can also have the same diameters, as viewed perpendicularly to the longitudinal axis (in the case of a circular configuration of both outer surfaces in plan view), or have the same greatest extension dimensions (for example in the case of a configuration of one or both outer surfaces which is oval or polygonal in plan view). In addition, the two outer surfaces can also be configured identically both with regard to their height, that is to say their offset dimension, and with regard to their diameter or their greatest extent dimension considered perpendicular to the longitudinal axis, but additionally also, if appropriate, with regard to their cone angle.In a further embodiment, both outer surfaces of the second flat region can also have identical outer contours, as viewed in the circumferential direction. Thus, for example, both outer surfaces can be circular or polygonal (for example, quadrilateral, pentagonal, hexagonal or octagonal).In the case of a circular or oval or polygonal configuration of the peripheries, these may lie overlapping in a projection along the longitudinal axis, but alternatively, if they are oval or polygonal configurations, they may also be oriented offset by a few degrees about the longitudinal axis.The number of corners can also be different in the case of a polygonal configuration.One or more of the proposed configurations can provide advantages with regard to the mounting and installation of the cable lug on a further connecting part, in particular even if more than two such cable lugs or connecting parts are connected to one another. The region of the connection section can be moved, for example, by the axial displacement of the outer surfaces of the first and second flat regions into a position spaced further axially from the contact surface.The above-described parameters of the opposing outer surfaces of the second flat region (height, diameter / extension and circumferential configuration and optionally a cone angle or a radius dimension with a spherical configuration of the contact surface) can be combined with one another. Thus, for example, identical circumferential configurations and heights can be provided, but differences are present with regard to the diameters or the greatest radial extent dimensions. Or, for example, identical heights and diameters / extension dimensions can be present, but different circumferential configurations. Moreover, however, all parameters can also be identical, for example.With regard to the above-described parameters, in particular the dimensional data, "the same" also applies to a slight deviation in the usual tolerance range, which may result, for example, from the manufacturing standpoint. Thus, a deviation of up to 5 percent from the comparison measure can still be referred to as "equal".In a further possible embodiment, the circumferential surface of the second flat region directed in the direction of the longitudinal axis can be conical, with a taper directed axially outwards, correspondingly towards the aforementioned outer surface of the second flat region. A cone angle in this respect to the longitudinal axis can be a few degrees of angle, for example 5 to 10 degrees or 15 degrees up to, for example, 30 degrees.The circumferential wall surrounding the second or third outer surface forms a circumferential contour in a projection of the circumferential wall along the longitudinal axis into a transverse plane to the longitudinal axis.The second flat region can have a formation usable as a coding in the region of the circumferential wall assigned to the second and / or third outer surface at one region or at a plurality of regions of the circumferential contour. Such a coding can be used for the proper arrangement of the cable lug on a further connecting part, for example in the case of an arrangement on a rechargeable battery for the correct arrangement of a positive conductor provided with the cable lug on the positive pole of the rechargeable battery. Alternatively or additionally, a proper orientation of the cable lug about the longitudinal axis relative to the connecting part can also be predefined by means of such a coding.In a further embodiment, the formations can also be haptically perceptible.Furthermore, the formations can be provided at a plurality of points on the circumferential surface, wherein in this respect an angular uniform spacing of the formations from one another can be provided, but alternatively also a spacing and arrangement which is uneven or irregular in this respect.Only one formation can be provided on the circumferential surface, alternatively two or three or more, up to five or ten, for example.Also, by the circumferential configuration of the second flat region, coding alone can be carried out, for example by a polygonal configuration provided over the circumference.The formation forming a coding can be provided by a recess which is radial with respect to the longitudinal axis. Such a radial, groove-like recess is preferably formed open towards the circumferential edge of the second flat region, as is also preferably open towards the associated outer surface.Alternatively, such a formation can also be formed by a radial enlargement with respect to the longitudinal axis. The formation correspondingly protrudes radially beyond the circumferential line of the second and / or third outer surface, otherwise free in the manner of a web.Further alternatively, such a formation can also be provided by a depression under the outer surface, which depression is axial with respect to the longitudinal axis, or else by an axial elevation beyond the outer surface.The possible embodiments of the formation described above can be provided in combination when forming a plurality of formations in the second flat region, for example a combination of circumferential radial recesses and enlargements or further for example of circumferential radial enlargements and axial depressions.The radial and / or axial dimensions of the formations can correspond, for example, to 0.5 times or less, for example up to 0.05 times the axial offset dimension of the first and second outer surfaces.In a further preferred embodiment, a peripheral region of a coding or else the sum of the peripheral regions of a plurality of codings can make up less than half of the remaining peripheral region kept free of such codings. For example, the sum of the circumferential dimensions of all codings (formations) considered in the circumferential direction can correspond approximately to 0.5 times or less the remaining circumferential dimension of the second flat region, which is not provided with formations, in the region of the outer surface, further for example to 0.3 times or less.The (further) connecting part for forming a connection to the cable lug, in particular to a cable lug having one or more of the features described above, can be a second cable lug in one possible embodiment. Both cable terminals can be electrically connected to one another via a connecting means, for example in the manner of a screw connection. For this purpose, a screw can engage with its screw shank through the bore of the first cable lug, after which the screw head bears on the facing surface of the first cable lug. This surface can be the outer surface of the first flat region of the flat part connecting section or else the outer surface of a second flat region.The screw shank also passes through the bore of the second cable lug. A clamping is effected, for example, by means of a screw nut, wherein, in the course of the screw connection, the mutually facing outer surfaces of the cable terminals come together and thus come into electrical contact.The second cable lug is preferably formed in accordance with the first cable lug described above, and thus also has a first flat region having a first outer surface and optionally a fourth outer surface and a second flat region having a second outer surface and optionally a third outer surface. By means of the clamping by means of the screw and optionally the screw nut, the outer surfaces of the second flat regions of the two cable lugs facing one another or of a first flat region of the one cable lug can come into planar and electrically conductive contact with a second flat region of the further cable lug.The connecting part can also be an electrical connecting part, for example a connecting pole of an accumulator or of an electrical consumer.Thus, the connecting part can furthermore be a sleeve part, for example. Its free surface running perpendicular to a sleeve longitudinal axis is preferably a contact surface for interacting with the outer surface of a second flat region on the cable lug side.The sleeve part can have a bore opening, for example in particular a blind bore aligned along the sleeve axis, for receiving a connecting means.In particular, a bracing of the cable lug with a connecting part designed as a sleeve part can be achieved by a connecting means in the form of a screw, for which purpose, in a further embodiment, the bore of the sleeve part can be provided with an internal thread.The sleeve part can be substantially identically designed with regard to the circumferential configuration to a facing second flat region of the cable lug to be connected.In this connection, it can also be provided that the sleeve part is conically adapted to the outer geometry of the second flat region of the cable lug. The assigned end of the sleeve part can for this purpose encompass the second flat region of the cable lug and be supported with its counter-conical surface, which tapers conically starting from the contact surface, on the facing conical surface of the second flat region. As a result, a centering of the connection partners can be achieved.In addition, in the region of the counter-circumferential surface, a counter-coding complementary to a possible coding in the region of the flat-region circumferential surface can be provided. The coding can be formed in the region of a circumferential surface running cylindrically with respect to the longitudinal axis, as well as alternatively on a conically running circumferential surface.The ranges or value ranges or multiple ranges specified above and below also include all intermediate values with regard to the disclosure, in particular in 1 / 10 steps of the respective dimension, optionally also dimensionless. For example, the specification 0.1 to 0.5 times also includes the disclosure 0.2 to 0.5 times, 0.1 to 0.4 times, 0.2 to 0.4 times, etc., the disclosure 1:5 also includes the disclosure 1.1:5.1:4.9, 1.1:4.9, etc., the disclosure 5 to 10 degrees also includes the disclosure 5.1 to 10 degrees, 5 to 9.9 degrees, 5.1 to 9.9 degrees, etc. This disclosure can serve on the one hand to delimit a stated range limit from below and / or above, alternatively or additionally but also to disclose one or more singular values from a respectively specified range.Brief Description of the DrawingsThe invention is explained in more detail below with reference to the attached drawing, which merely represents exemplary embodiments. A part which is explained only with reference to one of the exemplary embodiments and is not replaced by another part in a further exemplary embodiment on account of the special feature pointed out there is thus also described for this further exemplary embodiment as a part which is in any case possible. It shows: FIG. 1 is an exploded perspective view of a cable lug in a first embodiment with an associable sealing sleeve made of an electrically insulating material and a connecting means; FIG. 1a shows the cable lug in an alternative embodiment; FIG. 1 b shows the cable lug in a further alternative embodiment; FIG. 2 shows the cable shoe according to the embodiment in FIG. 1 in a plan view; FIG. 3 shows the cable lug in a perspective sectional illustration, cut along the line III-III in FIG. 2 ; FIG. 4 is an exploded perspective view of two cable terminals according to FIG. 1 in the associated position for establishing an electrical connection with a further connecting part; FIG. 5 is a sectional view along the line V--V in FIG. 4 through one of the cable shoes; FIG. 6 shows a sectional view according to FIG. 5 of a prepared electrical connection position of two cable terminals on a further connection part using a connection means in the form of a screw; FIG. 7 shows the enlargement of the region VII in FIG. 6 ; FIG. 8 is a sectional view corresponding to FIG. 6, but after the electrical connection has been produced by bracing via the connecting means; FIG. 9 shows the enlargement of the region IX in FIG. 8; FIG. 10 is a schematic sectional view of a flat part connecting portion of the cable lug before forming is performed using die forming; FIG. 11 is a subsequent view to FIG. 10 after the forming has been carried out, in order to form second flat regions of the flat part connecting section surrounding a bore; FIG. 12 shows a sectional illustration according to FIG. 3, relating to a second embodiment of the cable lug; FIG. 13 is a top view of the cable lug corresponding to the illustration in FIG. 2, relating to a third embodiment; FIG. 14 shows a further top view of the cable lug corresponding to the illustration in FIG. 2, relating to a fourth embodiment; FIG. 15 shows a further embodiment of a cable lug with an embedded electrically insulating material in a sectional illustration according to FIG. 5 ; FIG. 16 shows in a further embodiment an electrical connection according to the illustration in FIG. 8, but with two cable terminals not provided with an electrically insulating material; FIG. 17 shows a cable shoe in a perspective illustration, relating to a further embodiment; FIG. 18 shows the cable shoe according to FIG. 17 in a further perspective illustration; FIG. 19 shows the cable lug of the embodiment according to FIGS. 17 and 18 in a side view; FIG. 20 shows a bottom view of a cable lug with a coding in the region of the second flat region, relating to a further embodiment; FIG. 21 is an end view against the cable lug according to the arrow XXI in FIG. 20 ; FIG. 22 shows the top view of a connecting part to be connected to the cable lug according to FIG. 20, having a negative code; FIG. 23 is a sectional view of the terminal and the connecting member taken along the line XIII--XIII in FIG. 20; FIG. 24 is an enlarged view of the area XXIV in FIG. 23 ; FIG. 25 is a view corresponding to FIG. 20, relating to a further embodiment; FIG. 26 shows a further embodiment in a representation according to FIG. 20 ; FIG. 27 shows a perspective illustration according to FIG. 1 of a cable lug with a second flat region in a further embodiment, codings being provided in the second flat region; FIG. 28 is a view corresponding to FIG. 27, relating to a further embodiment; FIG. 29 shows a further embodiment of a cable lug according to FIG. 27 ; FIG. 30 is an enlarged view of the area XXX in FIG. 12 ; FIG. 31 is a view corresponding to FIG. 30, relating to a further embodiment; FIG. 32 shows an alternative embodiment in a representation according to FIG. 30 ; FIG. 33 shows a sectional illustration according to FIG. 30, relating to a further embodiment.DESCRIPTION OF THE EMBODIMENTSShown and described, first with reference to FIGS. 1 to 3, is a first connecting part 8 designed as a cable lug 1 for connection to an electrical cable 2.The cable 2 has centrally one or more electrically conductive wires which are surrounded by an insulating sheath consisting of an insulating plastic material, for example a radiation-crosslinked polyurethane. The cross section of the cable 2 is preferably circular and freed in the region of an end 3 for exposing the conductive wires from the insulation sheath otherwise provided over the length of the cable 2.The free end 3 of the cable 2 is fixed in or on a connection section 4 of the cable lug 1 for establishing an electrical connection. For this purpose, according to the embodiment in FIG. 1, the connection section 4 can form a tube section 51, for example for fixing the cable 2 by crimping. Alternatively, the connection section 4 can also be formed, for example, by a connection lug 52 according to the illustration in FIG. 1 a, to which the cable 2 can be welded further, for example. Further alternatively, the connection section 4 can also be composed, for example, of a fixed section 54 and a clamping section 53 (see FIG. 1 b ), which clamping section 53 can be braced against the fixed section 54 by means of screws 55 for clamping the end of the cable 2 freed of the insulation between the clamping section 53 and the fixed section 54.Formed integrally and preferably materially integrally with the connection section 4 is, furthermore, a flat part connection section 5 of the cable lug 1, by means of which, in particular using a connection means 6, for example, as shown in FIGS. 1 and 6, in the form of a screw having a screw head 12 and a screw shank 13 provided with an external thread 14, a mechanical and electrically conductive connection to a further connection part 7 (FIG. 4 ) can be produced.Such a further connecting part 7 can be a further cable lug 1. Alternatively, the connecting part 7 can also be an electrical connecting part 27, further comprising, for example, a sleeve part 24 with a bore opening 25 and an internal thread 26, for screw cooperation with the screw shank 13 of the connecting means 6 (compare, for example, FIGS. 4 and 6 ).In the exemplary embodiments shown, the flat part connecting section 5 has a first flat region 15 with two opposing first and fourth outer surfaces 9 and 10. In addition, the flat part connecting section 5 is penetrated by a bore 11. The longitudinal axis x of the bore 11 is preferably directed substantially perpendicularly to the outer surfaces 9 and 10, wherein a wall 50 of the bore 11 forms an inner surface 49.Surrounding the bore 11, at least one outer surface 9 and / or 10 is formed integrally and preferably materially unitarily, in particular integrally and preferably materially unitarily, with the first flat region 15, and a second flat region 16 is formed with a second or third outer surface 18, 19 arranged offset in the direction of the longitudinal axis x with respect to the facing first or fourth outer surface 9, 10 or running upwards starting from the first or fourth outer surface. As a result of the second flat region 16, a region with the second and third outer surfaces 18, 19 is obtained which is raised with respect to the outer surface 9 or 10 of the first flat region 15. FIGS. 1 to 11 show a cable terminal 1 with second and third outer surfaces 18 and 19 which are formed offset on the second flat region 16 on both sides of the first flat region 15 by a first or second offset dimension a, a'. FIG. 12 shows an embodiment in which only one second outer surface 18 offset from the first outer surface 9 by an offset dimension a is provided on the second flat region 16.The first flat part connecting section is in any case conceptual, regardless of whether it is formed materially uniformly with the second flat part connecting region 16 or not considered continuous up to the bore 11, as indicated by the dashed continuation of the first and fourth outer surfaces in the magnifying glass representation of FIG. 3. The geometric configuration explained here with respect to the first and second flat regions 15 and 16, respectively, is preferred, although not obligatory, with respect to the possible composition, also explained, of the flat part connecting section 5 from regions of different metallic materials, that these regions are formed separately in the axial direction with respect to the first and second flat regions.In the second flat region, in a cross section in which the longitudinal axis x is represented as a line, a thickness region Z is produced on the side of the flat part connecting portion 5, in which the flat part connecting region 5 having a first thickness c also forms a partial region of the inner surface 49 delimiting the bore 11.In a preferred embodiment, the cable shoe 1 is made in its entirety or in some ways from a brass material. Due to the good properties of the brass material with regard to a possible cold or also hot forming, the formation of the second flat region 16 by such a forming is particularly preferred. FIGS. 10 and 11 show schematic representations of, for example, a forming process, by means of which the flat part connecting portion 5, which is initially thickened overall in the direction of the longitudinal axis x, can be brought, preferably under high pressure, by means of die forms G 1 and G 2 into a shape forming the first flat region 15 and exposing the second flat region 16.As a result of a deformation, a consolidation of the cable lug material can optionally result in the region of the outer sides 9 and / or 10 of the flat part connecting portion 5 surrounded by the second flat region 16, which can lead to an increase in the stability of the cable lug 1 overall. Regions which may be solidified as a result are schematically represented in FIG. 11 by a compressed hatching and are provided with the reference sign 17.The cable shoe 1 can, however, also have composite regions made of different materials. Thus, as noted here, the second flat region, as viewed preferably axially continuously, can consist of a different material, for example copper, than the first flat region.As also shown in the different embodiments of FIGS. 1 to 30, second and third outer surfaces 18 and 19 of the second flat region 16, which are aligned parallel to one another in space and run perpendicular to the longitudinal axis x, and first and fourth outer surfaces 9 and 10 of the first flat region 15 can result.As shown in FIGS. 1 to 19 and 27 to 30, the second flat region 16 can have a substantially rectangular cross section with a radial width b with respect to the longitudinal axis x. When the second outer surface 18 and / or third outer surface 19 is oriented transversely to the longitudinal axis x and parallel to the first or fourth outer surface 9, 10, a first offset dimension a, viewed in the axial direction, is obtained between the outer surface 9 of the first flat region 15 and the second outer surface 18 of the second flat region 16 or a second offset dimension a' is obtained between the fourth outer surface 10 of the first flat region 15 and the third outer surface 19 of the second flat region 16 (compare magnification illustration in FIG. 3 ).The offset dimension a or a' can correspond, for example, with respect to the embodiments of FIGS. 1 to 19 and 27 to 30, to approximately 0.5 times the radius dimension r of the bore 11 and / or to approximately 0.6 to 0.75 times the thickness c between the outer sides 9 and 10 of the flat part connecting section 5, as viewed in the direction of the longitudinal axis x.In the second flat region 16, different displacement dimensions a or a' can result over the width b, viewed correspondingly in the radial direction, and thus, for example, a displacement dimension a which increases continuously from the radially outer side of the overall annular elevation in the second flat region 16 radially inward toward the greatest displacement dimension a. This can result in an embodiment of the second flat region 16, in which the associated second and / or third outer surface 18, 19 runs at an angle of less than 90 degrees to the longitudinal axis x in a cross section in which the longitudinal axis x is represented as a line, further, for example, tapering conically towards the free end of the second flat region 16.FIG. 31 shows a schematic illustration of such a configuration with a circumferential surface 20 which runs cylindrically with respect to the longitudinal axis x and at the end of which, remote from the first outer surface 9, the second outer surface 18 of the second flat region 16 adjoins, including an angle δ with respect to the longitudinal axis x of approximately 45 degrees.Also, as shown in FIG. 32, a combination of a circumferential surface 20 which extends conically at an angle α relative to the longitudinal axis x and an outer surface 18 which extends conically as described above can be provided.The illustration in FIG. 33 shows an embodiment in which the second outer surface 18 is designed spherically, corresponding in the cross section illustrated overall to a radius t relating to the longitudinal axis x.If the further connecting part 7, for example sleeve part 24, is equipped with a mating contact surface of adapted shape, as is schematically shown in FIGS. 30 to 33, automatic centering of the contact partners results in the case of a conical or spherical configuration of the second outer surface 18. In addition, in the case of a conical or spherical configuration of the second outer surface, an enlargement of the current transmission surface results in comparison to a second outer surface running in a plane perpendicular to the longitudinal axis x.The flat part connecting region 5 has a second thickness g in the second flat region 16, which is composed of the first thickness c and the (greatest) offset dimension a and / or a'. In the case of a formation of both a second and a third outer surface 18 and 19, the second thickness g is composed of the first thickness c and the two (respectively greatest) displacement dimensions a and a'.As can be further seen from FIGS. 1 to 19 and 27 to 30, the bore 11 can extend over its entire extent in the direction of the longitudinal axis x with a constant radius dimension r. The inner surface 49 of the bore wall 50 correspondingly forms in these embodiments the radially inner boundary of the second flat part region 16.FIGS. 20 to 26 show embodiments in which only one second outer surface 18 assigned to the fourth outer surface 10 is formed by an offset dimension, here the second offset dimension a', wherein the radially outer circumferential surface 20 of the section of the second flat region 16 forming this outer surface 18 can extend conically as shown, with a taper axially outwards towards the axially free end of the second flat region 16 (see FIG. 24 ). A cone angle α of approximately 5 to 15 degrees, further for example approximately 10 degrees, can be established (compare FIG. 24 ).If the further connecting part 7 to be electrically connected to the cable lug 1 is formed as a connecting part 27 in the manner of a sleeve part 24, its receiving geometry can be conically adapted to the above-described outer geometry of the second flat region 16 (see FIG. 23 ).The (greatest) offset dimension a or a' 16, as viewed in the axial direction, can correspond to approximately 2 times and the greatest width b, as measured in the radial direction, can correspond to approximately 3 times the bore radius dimension r in the first flat region 15 of the flat part connecting section 5 (compare FIGS. 23 and 24 ).The second bore section 22 surrounded by the second flat region 16 can also have an increased radius dimension r' in the flat part connecting section 5 of a first bore section 21 surrounded by the second flat region 16. Thus, this radius dimension r' can correspond to approximately 1.5 to 1.8 times, further for example approximately 1.6 times, the radius dimension r.With reference to a plan view of the cable shoe 1, in which plan view the longitudinal axis x is represented as a point (compare for example FIG. 13 ), the second and / or third outer surface 18, 19 of the second flat region 16 can have a circular circumference (see for example FIG. 1 or 12 ). Deviating therefrom, however, the circumference can also be designed to be polygonal, for example, uniformly hexagonal (see FIG. 13 ) or also further square (see FIG. 14 ), for example.If second and third outer surfaces 18 and 19 are formed on both sides of the flat part connecting section 5, i.e. if they are offset by a first offset dimension a and a second offset dimension a', these may be formed identically with respect to the outer contour. However, different outer contours are also possible in this respect, for example a second outer surface 18 which is circular in circumference and, opposite, a third outer surface 19 which is, for example, octagonal in circumference.Regardless of the respectively selected outer contour of the second and / or third outer surface 18, 19, according to a possible embodiment, the largest radial extension dimensions d of the outer surfaces 18, 19 perpendicular to the orientation of the longitudinal axis x can be selected to be the same. An unequally greatest radial extension of the outer surfaces 18 and 19 is also alternatively possible.The opposing outer surfaces 18 and 19 can also have the same first and second (respectively greatest) offset dimensions a, a' (starting from the associated outer surface 9 or 10), as viewed in the direction of the longitudinal axis x. Alternatively, different displacement amounts a and a' may be selected in this respect.Furthermore, for example, the second outer surface 18 can also extend conically or spherically in a cross section, while a possible third outer surface 19 can extend in a plane, for example, oriented perpendicularly to the longitudinal axis x.Further preferably, the largest extent d can be selected such that the circumferential surface 20 of the second flat region 16 extends at a radial distance from the outer edge 23 of the first flat region 15 delimiting the outer surface 9 or 10.The cable lug 1 can be used both with and without an electrically insulating material 28 substantially completely enveloping the cable lug 1.In FIGS. 1 to 9, a separately produced sealing sleeve 29 is used, having a tube section 30 and a flat part section 31, circular perforations 32 being provided in the pocket-like flat part section 31, which perforations are preferably arranged in an axial overlap.Such a sealing sleeve 29 can be drawn over the cable lug 1 to be insulated. FIG. 4 shows, by way of example, two cable terminals 1 each provided with such a sealing sleeve 29.The apertures 32 and 33 are preferably adapted in their radial extent and, moreover, also with regard to their circumferential configuration to the circumferential extent and to the extent d of the associated second and / or third outer surfaces 18, 19, such that, in the state in which they are pulled over the cable lug 1, the marginal edge 34 of the aperture 32, 33 surrounds the circumferential surface 20 of the second flat region 16. The outer surface 18 and / or 19 is exposed for contacting in the through opening 32 or 33 of the sealing sleeve 29 (compare FIG. 5 ).Surrounding the opening 32, the upwardly directed opening in the representations, a sealing bead 35 is formed on which can be surrounded radially on the outside by a likewise encircling bead-like depression 36.Associated with the aperture 33, this can be formed at a radial distance from the edge 34, including a sealing lip 37.FIGS. 6 and 7 show a preparation position for establishing an electrical connection between two cable terminals 1 (first connecting part 8 and further connecting part 7) and a connecting part 27 using a connecting means 6 in the form of a screw.The screw passes with its screw shank 13 through the bores 11 of the cable shoes 1 which are located with their flat part connecting sections 5 on top of one another and engages with its external thread into the internal thread 26 of the sleeve part 24 on the connection part side.As also shown and preferably, the screw head 12 can be covered with a cap 38 consisting of an electrically insulating material, which cap can form a radially outwardly protruding collar 39 in the transition of the screw from the screw head 12 into the screw shank 13.If the cable terminals 1 are provided with sealing sheaths 29, as described above, the collar 39 of the connecting means 6 bears against the sealing bead 35 of the facing sealing sheath 29. This sealing sleeve 29, which is the upper one in FIG. 6, is in turn supported together with the cable lug 1 accommodated therein on the sealing bead 35 of the sealing sleeve 29 arranged beneath it, wherein the sealing lip 37 is preferably located in a bead-like depression 36 of the lower sealing sleeve 29 (compare FIG. 7 ). The lower sealing surface 29 can also be formed without the bead-like depression 36.The lower sealing sleeve 29 is in turn supported with the cable lug 1 received via its sealing lip 37 on a facing surface 40 surrounding the sleeve part 24.Tightening of the connecting means 6 results in a bracing of the cable shoes 1 between the screw head 12 and the sleeve part 24 on the connection part side according to FIG. 8, wherein a full-surface and electrically conductive contact of the facing outer surfaces 18 and 19 of the two cable shoes 1, which outer surfaces are raised by the formation of the second flat region 16, and of the outer surface 19 of the lower cable shoe 1 and of the facing surface of the sleeve part 24 results.This results in a seal which is protected in particular from dust and splash water and also electrically insulating. In this case, a plastic deformation of the one or both sealing beads 35 and of the one or both sealing lips 37 can be established, wherein the sealing lip 37 of the upper cable lug 1 can lie approximately completely in the depression 36 of the lower cable lug 1 under plastic deformation (compare FIG. 9 ).As is also preferred, a labyrinth seal acting in the radial direction can be achieved.FIG. 15 shows an alternative embodiment in which the electrically insulating material 28 is applied directly to the cable lug 1, for example as a result of the cable lug 1 being encapsulated with plastic material by injection molding.FIG. 16 shows a connection position of two cable terminals 1 which are not surrounded by an electrically insulating material 28, which also bear here directly against one another with their facing outer surfaces 18 and 19. In this example, the clamping is effected by means of a connecting means 6 in the form of a screw and a screw nut 41 screwed onto the freely projecting end of the screw shank 13.As a result of the configuration of the second and / or third outer surface 18 and / or 19 arranged offset in the axial direction with respect to the first and / or fourth outer surfaces 9 and 10, advantages result with regard to the configuration, arrangement and fastening of the cable lug 1.The flat part connecting section 5 of this embodiment merges into a bridge section 42 running at an angle thereto. This may include an obtuse angle β of, for example, approximately 135 degrees with respect to the outer surface 9 of the first flat region 15 (compare FIG. 19 ).In the exemplary embodiment shown, the connecting section 4 which is tubular in this embodiment adjoins the end of the bridge section 42 and whose tube axis y runs substantially perpendicular to the longitudinal axis x of the bore 11 and transversely to the longitudinal extent L of the bridge section 42. Alternatively, the connection section 4 can also be designed here, for example, as a connection lug 52 or, further alternatively, for example, as a clamping connection.According to the above-described embodiments, such a cable shoe 1 having multiple angles can be sheathed with an electrically insulating material 28 (for example in the form of a sealing sheath or as a result of injection molding with plastic).FIGS. 20 to 29 show exemplary embodiments of a cable lug 1, which is provided in the second flat region 16 with formations 43 which can be used as coding K.The formations 43 are preferably formed in the region of the circumferential surface 20, wherein viewed over the circumference one or more, for example two, three or four up to five or ten such formations 43 can be provided. In the case of an arrangement of a plurality of formations 43, these can be provided spaced apart uniformly from one another in the circumferential direction P, but alternatively also non-uniformly.Thus, according to FIGS. 20 to 24, two diametrically opposite formations 43 in the form of radial recesses 44 which are open towards the circumferential surface 20 and towards the associated outer surface 19 can be provided, which recesses can be formed in the shape of a segment of a circle in a view onto the outer surface 19.In this case, when a formation 43 is formed in the form of a recess 44, a radial depth e can result which can correspond to approximately 0.3 to 0.7 times, further for example approximately 0.5 times, the width b of the second flat region 16 viewed in the same direction. The axial height f of the recess 44 as viewed from the outer surface 19 can furthermore correspond, for example, to approximately 0.6 to 0.9 times, further for example to approximately 0.75 times the offset dimension a as viewed in the same direction (compare FIG. 24 ).The above-described conditions can also result, for example, in the case of protrusions 43 in the form of radial enlargements 46, as will be described below.The further connecting part 7, to which the cable terminal 1 is to be electrically connected, is preferably of complementary design with respect to the arrangement and / or design or alignment of the coding, has correspondingly positioned counter-codings K', which can be designed as diametrically opposite radial enlargements 45 in the exemplary embodiment shown in FIGS. 20 to 24.The coding K / counter coding K' provides a clear assignment of connecting parts 7 and 8, and also, if appropriate, a specification with regard to the alignment of the parts with respect to one another about the longitudinal axis x, which can be achieved, for example, by arranging two formations 43 including an angle γ of less than 180 degrees, thus for example approximately 120 degrees (compare FIG. 25 ).FIG. 26 shows a further exemplary embodiment in which three formations 43 are provided distributed over the circumference, which formations enclose mutually different angles γ and γ'.The formations 43, as can be seen from FIGS. 27 and 28, can also be selected in a view against the outer surface 18 or 19 in the manner of a triangular formation, wherein, as in the case of the previously described circular-segment-shaped formation, the formation can be both a radial recess 44 and a radial enlargement 46 extending beyond the circumferential surface.In addition, in the case of a configuration of a plurality of formations 43, these can be provided on the second flat region 16 partly as a radial recess 44 and partly as a radial enlargement 46 (compare FIG. 28 ).Preferably, with respect to a second or third outer surface 18, 19, respectively, a circumferential region U of a formation 43, or, in the case of an arrangement of a plurality of formations 43, the sum of the circumferential regions U of all formations 43 or 19, respectively, is less than half, for example less than one fifth, of the remaining, formation-free circumferential region along the circumferential surface 20. The same can essentially apply to the formations 43 of the counter coding K' in the region of the further connecting part 7.As can further be seen from FIG. 29, a shaping 43 for forming a coding K can also be formed in the form of a depression 47 or elevation 48 directed in the direction of the longitudinal axis x. Such a shaped portion 43 extends starting from the outer surface 18 or 19, wherein here too a plurality of shaped portions 43 can be provided distributed over the outer surface 18 or 19, optionally in different embodiments (counterbore, elevation).A combination of radial and axial formations 43 for forming codings K can also be provided.The above explanations serve to explain the inventions which are covered overall by the application and which develop the prior art in each case also independently at least by the following combinations of features, wherein two, more or all of these combinations of features can also be combined, namely:A cable terminal 1, characterized in that the flat part connecting portion 5 has a second thickness g in the region of the second flat region 16, said second thickness being composed of the first thickness c and the first offset amount a, wherein the first offset amount a can be given differently over a width of the second flat region 16.A cable shoe 1, characterized in that the first flat portion 15 has a fourth outer surface 10 which is formed opposite and in the same direction as the first outer surface 9.A cable shoe 1, characterized in that the second flat portion 16 has a third outer surface 19 which is formed opposite and in the same direction as the second outer surface 18.A cable shoe 1, characterized in that the third outer surface 19 is offset from the fourth outer surface 10 by a second offset amount a'.A cable lug 1, which is characterized in that the bore 11 is a stepped bore, having a smaller-diameter first bore section 22 and a larger-diameter second bore section 21, and in that the second flat region 16 forms an inner surface 49 of the bore 11 in the region of the first bore section 22 and in the region of the second bore section 21.A cable shoe 1, which is characterized in that the cable shoe 1 consists of a brass material.A cable shoe 1, which is characterized in that the second flat region 16 is formed by forming.A cable lug 1, which is characterized in that the bore 11 extends through the second flat region 16 with a constant radius dimension r in the direction of the longitudinal axis x.A cable terminal 1, which is characterized in that the second and third outer surfaces 18, 19 have the same offset dimensions a, a' to the first and fourth outer surfaces 9, 10 and / or have the same diameter d perpendicular to the longitudinal axis x and / or the same maximum extension dimensions d perpendicular to the longitudinal axis x and / or the same outer contours viewed in the circumferential direction.A cable lug 1, which is characterized in that a circumferential surface 20 of the second flat region 16 directed in the direction of the longitudinal axis x runs conically, with a taper towards the axially outer side.A cable shoe 1, which is characterized in that the second flat region 16 extends conically.A cable shoe 1, which is characterized in that the second flat region 16 has a formation 43 usable as coding K on one region or on a plurality of regions of the circumference.A cable lug 1, which is characterized in that the formation 43 is a radial recess 44 with respect to the longitudinal axis x.A cable lug 1, which is characterized in that the formation 43 is a radial enlargement 46 with respect to the longitudinal axis x.A cable lug 1, which is characterized in that the formation 43 is an axial depression 47 with respect to the longitudinal axis x.A cable lug 1, characterized in that the formation 43 is an axial elevation 48 with respect to the longitudinal axis x.A terminal 1, characterized in that a peripheral area U of the one code K or the sum of the peripheral areas U of the plurality of codes K is less than half of the remaining peripheral area.A connection, which is characterized in that the connecting part 7 is designed to be complementary with regard to the features of the one coding K or of the plurality of codings K of the cable lug 1.A connection characterized in that the connecting part 7 is a second cable lug 1.A connection characterized in that the connection part 7 is an electrical connection part 27.A connection, characterized in that the connecting part 7 is a sleeve part 24.A connection, which is characterized in that the sleeve part 24 is provided with a bore opening 25.A connection, which is characterized in that the sleeve part 24 has an internal thread 26.A connection, which is characterized in that the sleeve part 24 is conically adapted to the outer geometry of the second flat region 16 of the cable lug 1.All the features disclosed are essential to the invention (alone, but also in combination with one another). The disclosure of the application hereby also includes the content of the disclosure of the associated / attached priority documents (prior application document), also for the purpose of including features of these documents in claims of the present application. The dependent claims, even without the features of a related claim, characterize with their features independent inventive refinements of the prior art, in particular in order to undertake partial applications on the basis of these claims. The invention as recited in each claim may additionally include one or more of the features recited in the foregoing description, particularly numbered and / or recited in the list of reference numerals. The invention also relates to embodiments in which individual features mentioned in the above description are not realized, in particular insofar as they are noticeably unnecessary for the respective intended use or can be replaced by other technically equivalent means.List of Reference Numerals1 Cable lug 2 Cable 3 End 4 Connection section 5 Flat part connection section 6 Connection means 7 Further connection part 8 First connection part 9 First outer surface 10 Fourth outer surface 11 Bore 12 Screw head 13 Screw shank 14 External thread 15 First flat region 16 Second flat region 17 Consolidated region 18 Second outer surface 19 Third outer surface 20 Circumferential surface 21 First bore section 22 Second bore section 23 Outer edge 24 Sleeve part 25 Bore opening 26 Internal thread 27 Connection part 28 Material 29 Sealing sleeve 30 Tube section 31 Flat part section 32 Aperture 33 Aperture 34 Peripheral edge 35 Sealing bead 36 Depression 37 Sealing lip 38 Cap 39 Collar 40 Surface 41 Screw nut 42 Bridge section 43 Formation 44 Recess 45 Enlargement 46 Enlargement 47 Depression 48 Elevation 49 Inner surface 50 Wall 51 Tube section 52 Connection lug 53 Clamping section 54 Fixed section 55 screw a displacement amount a' displacement amount b width c first thickness d extension amount e radial depth f axial height g second thickness r radius amount r' radius amount t radius x longitudinal axis y tube axis G1 die G2 die K coding K' coding L longitudinal extension P circumferential direction U circumferential region Z thickness region α cone angle β angle γ angle γ' angle δ angleReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2016 100 978 A1

[0003]

Claims

Cable shoe (1) having a connection section (4) for a cable (2) and a flat part connecting section (5) having a bore (11) with a longitudinal axis (x), wherein the flat part connecting section (5) has a first flat region (15) forming a first thickness (c) and an outer edge (23) with a first outer surface (9) and a second, annular flat region (16) with a second outer surface (18) formed as an electrical contact surface, wherein the second outer surface (18) of the second flat region (16), preferably formed materially uniformly with the first flat region (15), is offset with respect to the first outer surface (9) by a first offset dimension (a), characterized in that the flat part connecting section (5) has a second thickness (g) in the region of the second flat region (16), which is composed of the first thickness (c) and the first offset dimension (a), wherein the first offset dimension (a) can be given differently over a width of the second flat region (16).Cable shoe according to Claim 1, characterized in that the first flat region (15) has a fourth outer surface (10) which is formed opposite and preferably in the same direction as the first outer surface (9), and / or the second flat region (16) has a third outer surface (19) which is formed opposite and preferably in the same direction as the second outer surface (18), and / or the third outer surface (19) is offset with respect to the fourth outer surface (10) by a second offset amount (a').Cable shoe according to one of the preceding claims, characterized in that the bore (11) is a stepped bore, having a first bore section (22) of smaller diameter and a second bore section (21) of larger diameter, and in that the second flat region (16) forms an inner surface (49) of the bore (11) in the region of the first bore section (22) and in the region of the second bore section (21).Cable lug according to one of the preceding claims, characterized in that the second flat region (16) or the cable lug (1) consists of a brass or copper material, and / or the second flat region (16) is formed by forming.Cable shoe according to one of the preceding claims, characterized in that the bore (11) extends through the second flat region (16) with a constant radius dimension (r) in the direction of the longitudinal axis (x).Cable shoe according to one of Claims 2 to 5, characterized in that the second and third outer surfaces (18, 19) have identical offset dimensions (a, a') with respect to the first and fourth outer surfaces (9, 10) and / or have identical diameters (d) perpendicular to the longitudinal axis (x) and / or have identical greatest extent dimensions (d) perpendicular to the longitudinal axis (x) and / or have identical outer contours viewed in the circumferential direction.Cable shoe according to one of the preceding claims, characterized in that a circumferential surface (20) of the second flat region (16), which circumferential surface is directed in the direction of the longitudinal axis (x), runs conically, with a taper towards the axially outer side and / or in that the second flat region (16) runs conically.Cable shoe according to one of the preceding claims, characterized in that the second flat region (16) has a formation (43) which can be used as a coding (K) on one region or on a plurality of regions of the circumferential contour.Cable shoe according to Claim 8, characterized in that the formation (43) is a radial recess (44) or is a radial enlargement (46) or an axial depression (47) or an axial elevation (48) with respect to the longitudinal axis (x).Cable shoe according to either of Claims 8 and 9, characterized in that a circumferential region (U) of the one coding (K) or the sum of the circumferential regions (U) of the plurality of codings (K) makes up less than half of the remaining circumferential region.Connection between a cable terminal (1) according to the features of one of claims 1 to 10 and a connecting part (7), characterized in that the connecting part (7) is designed to be complementary with respect to the features of the one coding (K) or of the plurality of codings (K) of the cable terminal (1).Connection according to claim 11, characterised in that the connecting part (7) is a second cable lug (1).Connection according to one of claims 11 or 12, characterised in that the connecting part (7) is an electrical connecting part (27) and / or a sleeve part (24), wherein, preferably, the sleeve part (24) is provided with a bore opening (25), wherein, further preferably, the sleeve part (24) has an internal thread (26).Connection according to claim 13, characterised in that the sleeve part (24) is conically adapted to an external geometry of the second flat region (16) of the cable lug (1).

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