Busbar connecting terminal, busbar connector, connecting element and conductor rail

Abstract

Busbar connecting terminal (74) for the electrical and mechanical connection of a first free end of a first busbar (8a-e) extending in a longitudinal direction (L) to a second free end of a second busbar (108a-e) extending in the longitudinal direction (L), wherein the first and second ends each have an end face (8h, 108h) closing off the busbars (8a-e, 108a-e) and longitudinal sides (8f-g, 108f-g) adjoining them at an angle, wherein the first and second ends are angled relative to the longitudinal direction (L) such that the end faces (8h, 108h) point essentially in the same insertion direction (E) in which the busbar connecting terminal (74) is placed onto the ends of the busbars (8a-e, 108a-e), and a longitudinal side (8f) of the first end and a longitudinal side (108f) of the second end face each other are,wherein the busbar connecting terminal (74) has first contact elements (81a-e) for clamping engagement with the longitudinal side (8f) of the first end and second contact elements (81a'-e') opposite the first contact elements (81a-e) in the longitudinal direction (L) for clamping engagement with the longitudinal side (108f) of the second end, characterized in that a distance (AK) between the first and second contact elements (81a-e; 81a'-e') is smaller than a combined thickness (DK) of the mutually facing first and second ends of the busbars (8a-e, 108a-e).

Description

[0001] The invention relates to a busbar connecting terminal according to the preamble of claim 1, a busbar connector according to the preamble of claim 21, a connecting element according to the preamble of claim 31 and a conductor rail, in particular a box conductor rail according to the preamble of claim 37.

[0002] DE 20 2022 105 468 U1 relates to a box-type conductor rail with a frame profile extending in a longitudinal direction and surrounding an interior space, wherein the interior space is accessible from the outside via a longitudinal slot in the frame profile. The interior space contains several conductor rails for sliding contact, each with a corresponding sliding contact of a current collector trolley movable along the conductor rail. The aim is to enable the best possible guidance of the current collector trolley in the conductor rail with the least possible wear on the conductor rail contacts and reduced noise pollution, to ensure the most uniform abrasion of the conductor rail contacts, and to improve the service life of the conductor rails and the transmittable current density while maintaining the same size of the box-type conductor rail.This is achieved by arranging the busbars in the conductor rail at an angle offset from one another around the longitudinal direction.

[0003] In addition, such box-type conductor rails are assembled from individual sections several meters long, whereby the respective ends of the conductor rails must be electrically connected to each other at the ends of the conductor rail sections to be connected. Since these ends are exposed to vibrations during operation due to the current collector trolley passing through the conductor rail, and since temperature changes in the electrically conductive, metallic conductor rails can cause length changes, especially in outdoor installations, a permanent, uninterrupted, and sufficiently powerful electrical connection between the conductor rail ends must be ensured.

[0004] The invention is therefore based on the object of eliminating the above-mentioned disadvantages and, in particular, of providing a busbar connecting terminal and a busbar connector which enable a good and uninterrupted electrical connection of the mutually facing ends of two sections of a conductor rail.

[0005] The invention solves this problem by a busbar connection terminal having the features of claim 1, a busbar connector having the features of claim 21, a connecting element having the features of claim 31 and a conductor rail, in particular a box conductor rail, having the features of claim 37, as well as by the use of a busbar connection terminal described above and below and in the claims having the features of claim 42 and the use of a busbar connector described above and below and in the claims with a connecting element described above and below and in the claims having the features of claim 43.

[0006] A busbar connecting terminal mentioned at the outset is characterized according to the invention in that a distance between the first and second contact elements is smaller than a combined thickness of the mutually facing first and second ends of the busbars.

[0007] The vertical direction is preferably perpendicular to the longitudinal direction, with a transverse direction preferably perpendicular to the longitudinal direction and / or the vertical direction. An insertion direction E is the direction in which the busbar connecting clamp is placed onto the ends of the busbars and preferably runs perpendicular to the longitudinal direction of the conductor rail. When referring to the transverse direction and the longitudinal direction with regard to the busbar connecting clamp, this assumes the inserted state of the busbar connecting clamp, i.e., when the ends of the busbar are connected to each other by the busbar connecting clamp.

[0008] Advantageously, the contact elements can initially extend in the insertion direction and then have their free ends bent back against the insertion direction, with the free ends of the contact elements bent toward each other. The distance between the first and second contact elements can be determined by the distance between the free ends of the contact elements that are bent toward each other.

[0009] Furthermore, the first and second contact elements can advantageously widen in a funnel shape in the insertion direction. The free ends of the first and second contact elements can also initially extend toward each other and then away from each other, counter to the insertion direction. Preferably, the first contact elements can have a plurality of adjacent contact tongues, and the second contact elements can have a plurality of adjacent contact tongues.

[0010] In an advantageous embodiment, the busbar connecting terminal can have a body with an interior space for receiving the ends of the busbars.

[0011] Preferably, the busbar connecting terminal can have stops behind the contact elements in the insertion direction of the busbar connecting terminal onto the ends of the busbars for engaging corresponding stops of a clamping head of a busbar connector. The stops can extend transversely to the insertion direction.

[0012] Furthermore, the busbar connecting terminal can advantageously have opposing, funnel-shaped insertion aids. The insertion aids can be arranged on guide flanks of the busbar connecting terminal that run in the insertion direction.

[0013] In addition, the busbar connection terminal can have at least one positioning opening for a positioning element, in particular a positioning pin of a clamping head of a busbar connector surrounding the busbar connection terminal. The positioning opening can preferably be adapted to the shape of the positioning element. Furthermore, the positioning opening can advantageously be incorporated into a side of the busbar connection terminal that runs transversely to the longitudinal direction and / or transversely to the insertion direction. Furthermore, the busbar connection terminal can advantageously have a further positioning opening opposite the positioning opening.

[0014] The busbar connection terminal, or at least the contact elements, can preferably be made of an electrically conductive material. Furthermore, the busbar connection terminal can advantageously be made of a flat and / or strip-shaped material. In particular, the busbar connection terminal can advantageously be punched or laser-cut from the flat and / or strip-shaped material and subsequently bent into the three-dimensional shape of the busbar connection terminal, and / or wherein edges of the flat material to be connected can be connected or are connected to one another by means of a form-fitting connection, in particular a dovetail connection.

[0015] The busbar connecting terminal can have opposing, electrically conductive side walls which contact the longitudinal sides of the bent free ends of the busbars, in particular the narrow ones, which are transverse to the longitudinal direction.

[0016] In an advantageous embodiment, the spacing between the opposing, electrically conductive side walls, in particular transverse to the longitudinal direction, can be equal to or smaller than the width of the, in particular, wide, longitudinal sides of the bent-over free ends of the busbars, in particular transverse to the longitudinal direction. This can provide additional electrical contact to further improve current transmission. Additionally or alternatively, the opposing conductive flanks, as extensions of the side walls, can also be spaced apart from one another, so that the conductive flanks also contact the narrow longitudinal sides of the bent-over ends of the busbars.

[0017] A busbar connector mentioned at the outset is characterized according to the invention in that it is provided with a busbar connector as described in the claims and above and below for connecting ends of busbars of mutually facing sections of the conductor line.

[0018] Advantageously, the clamping head can preferably have longitudinally projecting projections with positioning elements, which interact with positioning stops on the insertion opening for positioning and / or securing the clamping head in the insertion opening. This can provide an additional connection between the first and second partial connecting elements, making the connection even more stable. Likewise, a defined and secure fit of the busbar connector in the insertion opening can be ensured, thus further improving the electrical and / or mechanical connection between the two ends of the busbars established by the busbar connection clamp.

[0019] The clamping head can advantageously have a receiving space for receiving the busbar connecting terminal. The receiving space can preferably have locking webs and / or locking lugs for holding the clamping head, which interact with corresponding locking webs and / or locking lugs on the clamping head. Furthermore, the clamping head can preferably have positioning elements running transversely to the insertion direction and preferably in the longitudinal direction, in particular positioning pins for corresponding positioning openings of the busbar connecting terminal. The two clamping head parts can also preferably be of identical design, which allows both simpler manufacture of the clamping head parts and easier assembly of the busbar connector, since no different parts need to be manufactured and there is no risk of confusion between different clamping head parts during assembly.

[0020] Furthermore, the busbar connector can be made of an electrically insulating material, in particular plastic. Preferably, one clamping head part can have at least one locking tab, preferably extending in the longitudinal direction, and the other clamping head part can have a corresponding, preferably longitudinally extending, lateral locking lug, which interacts with the locking tab. Preferably, the clamping head part can have the locking tab on one of its longitudinally extending sides and the locking lug on its other longitudinal side.

[0021] The clamping head can also have a cover which is located behind the busbar connection terminal in the insertion direction of the busbar connector and which, when the busbar connector is inserted into the insertion opening, covers the busbar connection terminal and the ends of the bare busbars from the environment, preferably electrically insulated from the environment in order to have no parts under electrical voltage when assembled.

[0022] Furthermore, the busbar connector can have an insertion opening in front of the busbar connecting terminal in the insertion direction, particularly one that widens in a funnel shape in the insertion direction, for inserting the ends of the busbars between the contact elements into the receiving space. This facilitates the installation of the busbar connector.

[0023] A connecting element mentioned at the outset is characterized according to the invention in that a part of insertion openings for busbar connectors described above and below as well as in the claims is provided on the first and second connecting profiles, into which the busbar connectors can be inserted in the assembled state of the first and second connecting profiles.

[0024] Preferably, the insertion openings can have locking webs or locking lugs for locking with corresponding locking lugs or locking webs of the busbar connectors in the respective insertion opening. In this case, a lateral connection opening can preferably be provided on the first connecting profile, into which a lateral connecting tab arranged on the second connecting profile and projecting longitudinally beyond it to the first connecting profile engages for fastening the two connecting profiles to one another. Furthermore, a lateral connection opening can be provided on the second connecting profile, into which a lateral connecting tab arranged on the first connecting profile and projecting longitudinally beyond it to the second connecting profile is provided for further fastening the two connecting profiles to one another.Furthermore, a locking tab can advantageously be provided on the first connecting profile, which interacts with a locking lug arranged on the second connecting profile, wherein when the connecting profiles are assembled in the longitudinal direction, the locking tab is pushed over the locking lug and engages with it, and wherein preferably a further locking tab can be provided on the second connecting profile, which interacts with a further locking lug arranged on the first connecting profile, wherein when the connecting profiles are assembled in the longitudinal direction, the further locking tab is pushed over the further locking lug and engages with it.

[0025] Preferably, the connecting profile(s) can be box-shaped.

[0026] In an advantageous embodiment, the box-shaped connecting profile can have opposing connecting side walls, which are connected to one another by a connecting top wall. The connecting side walls can advantageously have connecting bottom walls on their side opposite the connecting top wall, between which the longitudinal slot runs. Furthermore, the connecting side walls can advantageously be connected to the connecting top wall and / or the connecting bottom walls by means of inclined connecting walls extending at an angle thereto, in particular, wherein the angle is preferably 35° to 55°, more preferably 40° to 50°, and most preferably 44° to 46°.Furthermore, the inclined connecting walls can have inclined connecting busbar supports and / or the connecting top wall can have additional connecting busbar supports for supporting busbars of the partial sections of the conductor rail, wherein the connecting busbar supports are preferably aligned with corresponding busbar supports of the frame profiles. The connecting profile(s) can also advantageously have at least one, preferably lateral, connecting guide groove for one or more, preferably lateral, corresponding guide webs of the current collector, wherein the connecting guide grooves are preferably aligned in the longitudinal direction with guide grooves of the frame profiles of the adjoining conductor rail.

[0027] A conductor rail mentioned at the outset is characterized according to the invention in that a conductor rail connector as described in the claims and above and below is provided for connecting mutually facing sections of the conductor rail.

[0028] Advantageously, the first end of the first busbar can be angled away from the interior of the conductor rail at an angle of 85° to 90°, preferably at an angle of 90°, relative to the longitudinal direction, and the second end of the second busbar can be angled away from the interior of the conductor rail at an angle of 90° to 85°, preferably at an angle of 90°, relative to the longitudinal direction. Furthermore, the bent ends of the busbars can preferably protrude into insertion openings in the connecting element and each be encompassed by electrical busbar connecting terminals.

[0029] The busbars can preferably consist of a strip-shaped material, in particular with wider strip surfaces of the busbars forming sliding surfaces for the sliding contacts. The first busbar can also have an end face terminating its first end, and the second busbar can have an end face terminating its second end, and longitudinal sides adjoining it at an angle, wherein the first and second ends each have an end face terminating the busbars and longitudinal sides adjoining it at an angle, wherein the first and second ends are angled with respect to the longitudinal direction such that the end faces point essentially in the same insertion direction in which the busbar connecting clamp is placed onto the ends of the busbars, and a longitudinal side of the first end and a longitudinal side of the second end face one another.

[0030] Furthermore, the frame profiles can advantageously be box-shaped. The busbars can preferably be arranged in the corners of the box-shaped frame profile. Furthermore, the box-shaped frame profile can advantageously have opposing side walls which are connected to one another by a top wall, in particular wherein the side walls have bottom walls on their side opposite the top wall, between which the longitudinal slot runs. In addition, the side walls can be connected to the top wall and / or the bottom walls by means of inclined walls running at an angle thereto, in particular wherein the angle is preferably 35° to 55°, particularly preferably 40° to 50°, and most particularly preferably 44° to 46°.The inclined walls can also advantageously be supported by stabilizing webs on the adjacent side wall, top wall and / or bottom wall, in particular wherein the stabilizing webs are preferably arranged at an angle of 90° on the inclined walls. In this case, stabilizing walls can run between adjacent inclined walls, in particular wherein the stabilizing walls are connected to the respective adjacent side wall via lateral stabilizing webs. The busbars can also advantageously be arranged on the inclined walls, in particular wherein a further busbar is provided in the interior for at least one further sliding contact of the current collector trolley. The busbars can also be arranged in busbar holders of the conductor line, in particular wherein the busbar holders have a U-shaped cross-section with rail web recesses facing one another and encompassing the respective busbar.Preferably, the busbars can extend over the ends of the sections into connecting busbar holders of the connecting profile(s).

[0031] Preferably, a busbar connecting terminal as described above and below and in the claims can be used for electrically and mechanically connecting the first free end of the first busbar extending in a longitudinal direction to the second free end of the second busbar extending in the longitudinal direction.

[0032] Preferably, a busbar connector as described above and below and in the claims can be used in a connecting element as described above and below and in the claims.

[0033] Further features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings. These show: Fig. 1 a sectional view through a partial section of the conductor rail according to the invention along the section line AA in Fig. 2 with a side view of a current collector trolley movable in the conductor line; Fig. 2 a side view of the section of the conductor line from Fig. 1 from the right without pantograph trolley; Fig. 3 a side view of the pantograph trolley Fig. 1 from the right. Fig. 4 a three-dimensional oblique view of a part of a conductor rail according to the invention with a busbar connector according to the invention; Fig. 5 the three-dimensional oblique view from Fig. 4 with an exploded view of a busbar connector and a detailed view a) of the busbar connector and the insertion opening; Fig. 6 the three-dimensional oblique view from Fig. 4 without frame profiles; Fig. 7 the three-dimensional oblique view from Fig. 4 busbar connectors connecting only busbars and their ends; Fig. 8 a three-dimensional oblique view of the busbar connector from Fig. 5 in exploded view; Fig. 9 a front view of the busbar connector Fig. 8; Fig. 10 a top view of the busbar connector from Fig. 9; Fig. 11 a front view of the busbar connector Fig. 5; Fig. 12 a top view of the busbar connector from Fig. 11; Fig. 13 a sectional view through the busbar connector from Fig. 11 along the section line BB in Fig. 12; Fig. 14 a three-dimensional oblique view of the electrical connection terminal of the busbar connector from Fig. 8 from a first perspective; Fig. 15 a three-dimensional oblique view of the electrical connection terminal Fig. 11 from a second perspective different from the first; Fig. 16 a front view of the electrical connection terminal from Fig. 14 from diagonal left; Fig. 17 a side view of the electrical connection terminal from Fig. 16 from the right; Fig. 18 a bottom view of the electrical connection terminal Fig. 16; Fig. 19 a plan view of the electrical connection terminal from Fig. 16.

[0034] Fig. 1 and Fig. 2 show a conductor rail system 1 with a box-type conductor rail 2 and a current collector carriage 20 which can be moved in a longitudinal direction L in an interior space I of the box-type conductor rail 2, wherein Fig. 1 the box conductor line 2 in a sectional view along the section line AA from Fig. 2, while the current collector trolley 20 is only partially shown in sectional view.

[0035] The box-type conductor rail 2 is formed from a box-shaped frame profile 3 made of an electrically insulating material, preferably plastic, and preferably in one piece. However, other materials can also be used, for example, aluminum sheets coated with an insulating plastic layer or similar, and the frame profile 3 can also be formed from different components. Instead of a box-type conductor rail, another type of conductor rail can also be used for electrical loads that can be moved along it. The box-type conductor rail 2 is preferably mounted in the position shown in the drawings.

[0036] The frame profile 3, known per se, has a substantially rectangular cross-section with a longitudinal slot 4 pointing downwards in a vertical direction H towards the interior space I of the frame profile 3. In the region of the longitudinal slot 4, track surfaces 5a, 5b facing the interior space I and extending in a transverse direction Q are provided with lateral roller guide webs 6a, 6b projecting vertically in the vertical direction H, i.e., in the drawings, upwards into the interior space I.

[0037] Preferably, the height direction H is perpendicular to the longitudinal direction L and / or the transverse direction Q, and likewise the transverse direction is preferably perpendicular to the longitudinal direction L and / or height direction H. Particularly preferably, the directions L, H and Q can be perpendicular to one another, thus spanning a Cartesian coordinate system.

[0038] Furthermore, the frame profile 3 here has busbar holders 7a-d running at a 45° angle to the side walls of the frame profile 3 running in the vertical direction H of the frame profile 3 and a busbar holder 7e running in the transverse direction Q. Busbars 8a-e are held in the busbar holders 7a-e. The busbars 8a-e are preferably made of a strip material with good electrical conductivity and have sliding surfaces 9a-e facing the interior space I and designed for electrical contact. If necessary, the busbars 8a-e can also be made of another material with good electrical conductivity, which can also have other cross-sectional shapes. Opposite sliding surfaces 9a and 9d or 9b and 9c run at an angle of 180° to one another, i.e. parallel to one another.

[0039] In order to supply an electrical consumer moving along the box conductor line 2 with power, the Fig. 1 and Fig. 3 is movable in the box-type conductor line 2 in the longitudinal direction L. The current collector trolley 20 has a frame 21, on the front and rear ends of which, in the longitudinal direction L, are mounted, on the one hand, rollers 22, 23 arranged at the bottom and, on the other hand, guide rollers 24, 25 arranged at the top, rotatably about axes running perpendicular to the longitudinal direction L and, in particular, in the transverse direction Q. The rollers 22-25 are designed as double-flange rollers, but can also be designed differently.

[0040] The rollers 22, 23 are identically designed, so that in the following, mainly the Fig. 1, corresponding statements also apply to the left roller 22. The roller 23 has lateral flanges 27a, 27b, which surround the two lateral roller guide webs 6a, 6b from the outside, and roll with frontal running surfaces 29a, 29b on the track surfaces 5a, 5b of the frame profile 3. In Fig. 1, the lateral roller guide web 6b in the area of the rollers 22, 23 is drawn open in order to better represent the support of the running surfaces 28b, 29b on the track surface 9b as well as the wheel flanges 26b, 27b.

[0041] The upper guide rollers 24, 25 are also identically designed, so that in the following, especially the Fig. 1, corresponding explanations also apply to the left guide roller 24. The guide roller 25 also has lateral flanges 31a, 31b, which engage around the rail holding webs 23, 23' of the conductor rail holder 20. The distance between the flanges 31a, 31b of the upper, in Fig. 1 and Fig. 4 right guide roller 25 is adjusted to the width of the upper conductor rail holder 7e so that there is a certain amount of play, so that the wheel flanges 31a, 31b do not unnecessarily rub against the conductor rail holder 7e.

[0042] The wheel flanges 30a, 30b and 31a, 31b engage around the conductor rail holder 7e and thus ensure that the current collector trolley 2 can be moved in the transverse direction Q in the box conductor line 2 without lateral deviation.

[0043] Several sliding contacts 32a-f are provided on the current collector trolley 20, which contact the sliding surfaces 9a-e of the busbars 8a-e with their front sides as follows.

[0044] The sliding contacts 32a, 32b, 32d contact the busbars 8a, 8b, 8d and serve as phase conductor sliding contacts.

[0045] A pair of sliding contacts 32c, 32f contacting the conductor rail 8c serves as a grounding contact for the electrical load. To ensure the continuous grounding of the electrical load even when crossing a separation point between two adjacent sections of the box-type conductor rail 2, the sliding contacts 32c and 32f are spaced apart from each other in the longitudinal direction L, which also corresponds to the direction of travel of the current collector trolley 20.

[0046] The upper sliding contact 32e is used for connection to the upper busbar 8e and serves as a zero potential conductor.

[0047] In order to ensure a secure, permanent, uninterrupted contact of the sliding contacts 32a-f with the sliding surfaces 9a-e, even in the case of wear-related shortening of the sliding contacts 32a-f, these are each permanently pressed towards the sliding surfaces 9a-e by means of a separate, common or partially common feed device, for example via respective spring mechanisms. This can be recognized, among other things, by the fact that the sliding contacts 32a-f are in Fig. 1 are in a retracted position while in Fig. 3 are in a fully extended position. When the current collector trolley 20 is moved into the box-type conductor rail 2, the sliding contacts 32a-f are then preferably moved into the box-type conductor rail 2 by means of an entry funnel and thereby into the Fig. 1, in which they are pressed against the grinding surfaces 9a-e by means of a pre-tension, for example by appropriately arranged spring elements.

[0048] A cable duct 33 of the current collector trolley 20, which is funnel-shaped in the longitudinal direction L, then extends, as in Fig. 1 and Fig. 2, through the longitudinal slot 4, so that cables or lines connected to the sliding contacts 32a-f can be guided through the cable duct 33 to the electrical consumer.

[0049] Since the sliding contacts 32a-d are arranged at a 45° angle to each other, corresponding to the sliding surfaces 9a-d, and in pairs opposite each other, this results in an even load distribution of the contact pressure on the sliding contacts 32a-d in the box-type conductor rail 2. Since the load is also applied towards the corners of the box-type conductor rail 2, the increased rigidity of the box-type conductor rail 2 can be utilized in the corners. Since the sliding contacts 32a-d are not arranged only on opposite side walls, as is the case with known box-type conductor rails, the busbars 8a-d can also be made thicker for the same size of the box-type conductor rail 2, thus enabling a longer service life of the busbars 8a-d and allowing higher currents to be transmitted.

[0050] Furthermore, on the box-shaped frame profile 3 on one side wall there is a Fig. 1, Fig. 2 and Fig. 5 clearly visible, longitudinally extending lateral guide groove 10 is provided, into which a Fig. 3 clearly visible associated lateral guide web 34 of the current collector trolley 20 engages.

[0051] Usually, conductor rails such as the box-type conductor rail 2 are assembled from several conductor rail sections due to their often long lengths, for example, several tens of meters or hundreds of meters. In this case, the ends of two abutting sections 2a, 2b of the conductor rail 2 to be connected are shown and described as examples. The sections 2a and 2b are therefore not assembled from a single frame profile 3, but from several frame profiles 3, particularly in Fig. 4 and Fig. 5 shows such a further box-shaped frame profile 103. The frame profile 103 is identical to the frame profile 3 described above, so that the statements, explanations, and details regarding the frame profile 103 apply accordingly. Parts of the frame profile 103 corresponding to the frame profile 3 bear the same reference numerals as those of the frame profile 3, preceded by a number "10" for reference numbers less than 10 and preceded by a number "1" for reference numbers greater than 9.

[0052] The following describes how the Fig. 1 left end of the box-shaped frame profile 3 of the conductor rail 2 with the Fig. 4 and Fig. 5 left shown right end of the further frame profile 103 by means of a particularly in Fig. 2 and 4 to 6 can be connected both mechanically and electrically.

[0053] The connecting element 40 comprises a first partial connecting element 41 and a second partial connecting element 41', which are identically designed. The inner contours of the partial connecting elements 41, 41' are designed such that, in the final assembled connected state, the current collector trolley 20 can be guided through the connecting element 40 as through the frame profiles 3, 103, without the electrical contact between the busbars 8a-e of the first box-shaped frame profile 3 and in Fig. 6 and Fig. 7 clearly visible busbars 108a-e of the second box-shaped frame profile 103 as well as between the busbars 8a-e and 108a-e and the sliding contacts 32a-f.

[0054] The partial connecting elements 41, 41' each have a connecting contour 42, 42', which encompasses the ends of the box-shaped frame profiles 3 and 103, respectively, as shown in particular in Fig. 2, Fig. 4 and Fig. 5. The inner contour of the connecting contour 42, 42' is adapted to the outer contour of the box-shaped frame profiles 3 and 103, respectively.

[0055] Since the partial connecting elements 41, 41' are identically designed, the following explanation will also be based on only the partial connecting element 41, where appropriate. The corresponding explanations then also apply to the other partial connecting element 41'.

[0056] On the side opposite the connecting contours 42, 42' in the longitudinal direction L, the partial connecting elements 41, 41' are formed with a connecting profile 43, 43', which on the one hand enables the mechanical, detachable and electrically conductive connection of the partial connecting elements 41, 41' to one another, and on the other hand enables the mobility and safe guidance of the current collector trolley 20 while permanently maintaining the electrical contact between the sliding contacts 32a-f and the busbars 8a-e and 108a-e.

[0057] For this purpose, the connecting profiles 43, 43' largely replicate the outer and inner contours of the box-shaped frame profiles 3, 103 to ensure the guidance of the current collector trolley 20 and the permanent contact of the conductor rails 8a-e and 108a-e with the sliding contacts 32a-f. The connecting profiles 43, 43' thus extend the frame profiles 3, 103 in the area of the connection point of both sections 2a, 2b of the conductor rail 2.

[0058] Thus, the connecting profiles 43, 43' have auxiliary busbar supports for the busbars 8a-e and 108a-e, respectively, corresponding to the inclined busbar supports 7a-e and the upper busbar support 20. Furthermore, the connecting profiles 43, 43' have lateral connecting guide grooves, the position of which corresponds to the lateral guide grooves 10, 110 of the frame profiles 3, 103. This ensures that the lateral guide bar 34 of the current collector trolley 20 is also well guided in the area of the connecting element 40.

[0059] Likewise, the connecting profiles 43, 43 have opposing connecting side walls, which are connected to one another by a connecting top wall. On the side opposite the connecting top wall, the connecting side walls have connecting bottom walls. A longitudinal slot of the connecting element 40 runs between the connecting bottom walls in the longitudinal direction L. This slot is aligned with the longitudinal slot 4 or 107 of the frame profiles 3, 103 and serves to pass through the cable duct 33 of the current collector trolley 20. Preferably, the connecting side walls can be connected to the connecting top wall and / or the connecting bottom walls by means of inclined connecting walls extending at an angle thereto, the angle here being 45°.

[0060] During assembly, the partial connecting elements 41, 41' are placed on the respective end of the box-shaped frame profiles 3 and 103, respectively, and then connected to each other as described below. Thus, the partial connecting element 41 has on its one side in the transverse direction Q a Fig. 5 and Fig. 6, which engages in a corresponding connection opening 45' of the other partial connecting element 41' to be connected and can be fastened there by means of a snap connection. The same applies to the opposite side in the transverse direction Q, where the partial connecting element 41 has a correspondingly designed connection opening (not shown) for a correspondingly designed connecting tab of the partial connecting element 41' with a corresponding snap connection. This allows the two partial connecting elements 41, 41' to be firmly connected to one another.

[0061] Further security of the connection is provided by Fig. 4 to 6, which enable U-shaped locking tabs 46, 46' on the first and second partial connecting elements 41, 41', respectively, which, when the partial connecting elements 41, 41' are plugged together, can be pushed over upper locking lugs 47', 47 arranged on the other partial connecting element 41', 41 and then locked into place therewith.

[0062] As in Fig. 5 and Fig. As can be seen in Figure 7 and explained primarily with reference to the first busbar 8e and the second busbar 8e, the busbars 8e and 108e, respectively, have, at their free ends intended for connection, end faces 8h, 108h, which terminate in the longitudinal extension direction of the busbars 8e, 108e, and wider longitudinal sides 8f, 108f and narrower longitudinal sides 8g, 108g adjoining them at an angle. The same applies to the other busbars 8a-d, 108a-d.

[0063] How to continue in Fig. 5 and Fig. As can be seen in Figure 7, the mutually facing ends of the busbars 8a-e and 108a-e are bent outward, preferably by approximately 90°, transversely to the longitudinal direction L of the box-type conductor rail 2 and the connecting element 40, away from the interior space I of the box-type conductor rail 2 and the corresponding interior space V of the connecting element 40, and touch the mutually facing surfaces of the bent ends, in particular their mutually facing wider longitudinal sides 8f, 108f, thereby providing a large-area electrical contact. The bending can advantageously be performed during final assembly on site.

[0064] The bent ends of the busbars 8a-e and 108a-e also ensure that the partial connecting elements 41, 41' are permanently connected to the frame profiles 3 and 103, respectively.

[0065] In order to hold the ends of the busbars 8a-e and 108a-e securely together and thus ensure permanent electrical contact and in particular to avoid voltage-induced flashovers, insertion openings 48a-e with locking webs 49e, 49e' arranged therein are provided at the ends of the partial connecting elements 41, 41' in the assembled state, as shown by way of example in Fig. 5 and the detail a) of Fig. 5 using the upper insertion opening 48e and is described below using this.

[0066] A busbar connector 60e is inserted into the insertion opening 48e, which Fig. 8 to 13 is shown in detail.

[0067] The busbar connector 60e has an approximately mushroom-shaped clamping head 61, which consists of two identically designed clamping head parts 62, 62'. The exploded views in Fig. 8 to 10 show the respective design in the separated, disassembled state before assembly, while the Fig. 12 and 11 to 13 show the assembled state.

[0068] On the side walls of the clamping head parts 62, 62' running in the longitudinal direction L, locking lugs 63, 63' and 64, 64' are arranged, as in Fig. 8 to 10. These have a wedge-shaped profile extending upwards in the vertical direction H in order to interact with locking webs 49e, 49e' of the insertion opening 48e. Since the busbar connector 60e is inserted into the insertion opening 48e from above, the locking lugs 63, 63', 64, 64' slide over the locking webs 49e, 49e' and then snap into place as soon as they have been guided over them. This secures the busbar connector 60e in the insertion opening 48e against falling out.

[0069] Furthermore, the clamping head parts 62, 62' each have a U-shaped locking tab 65, 65' extending in the longitudinal direction L, as well as lateral locking lugs 66', 66 that interact with them. Due to the identical design of the two clamping head parts 62, 62', these two can be easily plugged together. The U-shaped locking tabs 65, 65' are pushed longitudinally over the lateral locking lugs 66, 66', with the respective notches of the locking lugs 66, 66' pointing away from the other clamping head part 62', 62'.

[0070] At its rear end, in an insertion direction E of the busbar connector 60e into the insertion opening 48e, the clamping head 61e widens into a mushroom shape. Covers 67, 67' provided on the two clamping head parts 62, 62', which extend substantially transversely to the insertion direction E, form a common cover, so that the area in front of it in the insertion direction E is no longer accessible from the outside when the busbar connector 60e is inserted. The insertion direction E always refers to the respective pair of busbar connectors 60a-e and the respective associated insertion opening 48a-e.

[0071] In the longitudinal direction L facing away from the other clamping head part 62, 62' there are two particularly in Fig. 9 clearly visible overlaps 68, 68', which project outward in the longitudinal direction L and have downwardly projecting positioning webs 69, 69' at their outer ends in the longitudinal direction L. The overlaps 68, 68' engage with the positioning webs 69, 69' from above into corresponding positioning stops 50e, 50e' of the insertion opening 48e. This additionally provides a connection between the partial connecting elements 41, 41'.

[0072] The two clamping head parts 62, 62' form the clamping head 61e in the assembled state, and as shown in particular in Fig. 13, therein comprises a receiving space 70 for an electrical connecting terminal 74. The receiving space 70 has upper stops 71, 71' in the respective clamping head parts 62 and 62', respectively. Furthermore, positioning pins 72, 72' are provided on the end walls of the receiving space 70 extending in the insertion direction E on the opposite clamping head parts 62, 62'.

[0073] At the front end, in the insertion direction E of the busbar connector 60e into the insertion opening 48e, the busbar connector 60e has a funnel-shaped insertion opening 73 for the ends of the busbars 8e and 108e, which narrows toward the receiving space 70. This allows even slightly spaced ends of the busbars 8e, 108e to be easily inserted into the busbar connector 60e.

[0074] How Fig. As shown in Figure 13, the electrical connection terminal 74 is completely received in the busbar connector 60e and its receiving space 70. Since the covers 67, 67' of the two clamp head parts 62, 62' completely close the receiving space 70 at the top, there is no danger of persons accidentally coming into contact with the live electrical connection terminal 4 when installed.

[0075] The connecting terminal 74 will now be described in more detail with reference to Fig. 14 to 19. As can be seen from the two three-dimensional representations in Fig. 14 and Fig. 15, the connecting terminal 74 has a circumferential body 75, which, viewed from above, has a substantially rectangular cross-section. The electrical connecting terminal 74 is punched or lasered from an electrically conductive sheet, which is then bent into the connecting terminal 74. As shown in Fig. 14 and Fig. As can be seen in Figure 15, the ends of the bent sheet metal are then firmly connected to one another by means of a form-fitting connection designed as a dovetail connection 76, although other types of connection are also conceivable.

[0076] At its rear end in the direction of insertion E, the connecting clamp 74 has two upper stops 77, 77' which are bent inwards and preferably by 90° on opposite side walls which, when inserted, run in the transverse direction Q and are wider here, and which, as shown in Fig. 13, abut against the upper stops 71, 71' of the clamping head 61e and thus prevent further upward displacement.

[0077] On its wider side walls, which extend in the transverse direction Q when inserted, positioning openings 78, 78' are provided in the circumferential body 75, into which the positioning pins 72, 72' of the clamping head 61e engage when the busbar connector 60e is mounted. This, in conjunction with the upper stops 77, 77' of the connecting terminal 74 and the upper stops 71, 71' of the clamping head parts 62, 62', ensures secure fixation of the connecting terminal 74 in the clamping head 61e. The connecting terminal 74 is positioned and secured in the clamping head 61e both in the insertion direction E and in the transverse direction Q.

[0078] On its narrow side walls 82, 82', which extend in the longitudinal direction L when inserted, the electrical connecting terminal 74 has opposing guide flanks 79, 79', which extend forward from the narrow side walls 82, 82' in the insertion direction E and have funnel-shaped insertion aids 80, 80' at their ends. This facilitates insertion of the busbar connector 60e into the insertion opening 48e, particularly when the two ends of the busbars 8e, 108e arranged therein are not positioned entirely cleanly in the insertion opening 48e.

[0079] In order to ensure the mechanical contact of the two upturned ends of the busbars 8e, 108e, spring contact tongues 81a-81e and 81a'-81e' are provided at the front ends of the side walls of the body 75 extending transversely to the longitudinal direction L and in the insertion direction E, and which are wider here. The spring contact tongues 81a-81e and 81a'-81e' initially extend slightly outwards from each other in the longitudinal direction L and are then bent inwards and against the insertion direction E, as shown in the cross section in Fig.13. The distance AK between adjacent ends of the spring contact tongues 81a-81e and 81a'-81e', which are opposite one another in the longitudinal direction L, is smaller than the combined thickness DK of the adjacent, bent-up ends of the busbars 8e, 108e in the longitudinal direction L, so that the spring contact tongues 81a-81e and 81a'-81e' press the bent-up ends of the busbars 8e, 108e against one another. This is intended to ensure the best possible surface contact between the busbars 8e, 108e. The combined thickness DK of the adjacent, bent-up ends of the busbars 8e, 108e results from the sum of the thicknesses D of the busbars 8e, 108e, whereby the busbars 8e, 108e are normally the same thickness, i.e. the combined thickness DK corresponds to twice the thickness D. If necessaryHowever, busbars of different thicknesses can also be connected mechanically and / or electrically, whereby the combined thickness DK is then the sum of the two individual thicknesses of the two busbars.

[0080] Since there are several spring contact tongues 81a-81e and 81a'-81e' lying next to each other in the transverse direction Q, even slightly inclined ends of the busbars 8e, 108e can be pressed well against each other, so that this alone enables good electrical contact between the ends of the busbars 8e, 108e in the area of the wide longitudinal sides 8g, 108g.

[0081] In addition, the free ends of the spring contact tongues 81a-81e and 81a'-81e' also contact the opposite side surfaces of the wide longitudinal sides 8g, 108g of the ends of the busbars 8e, 108e, thus establishing a plurality of electrical contacts between the two busbars 8e, 108e via the electrically conductive connecting terminal 74 itself. Thus, even if the ends of the busbars 8e, 108e are not constantly in contact with one another when a sliding contact 32e passes through due to vibrations or the shear forces exerted on the busbars 8e, 108e by the sliding contacts 32e moving in the longitudinal direction L, an additional current transmission path is provided by the connecting terminal 74.

[0082] The two functions complement each other: If the ends of the busbars 8e, 108e are moved apart so that their surfaces do not touch or only insufficiently, thus impairing the electrical contact between the two, the other side of the bent-up ends of the busbars 8e, 108e is pressed more firmly against the opposing spring contact tabs 81a-e, 81a'-e', thus establishing particularly good electrical contact between the spring contact tabs 81a-e, 81a'-e' and the respective busbars 8e, 108e. This can also be the case, for example, if the busbars 8e, 108e contract and shorten at low temperatures.

[0083] Conversely, in the event that the ends of the busbars 8e, 108e are pressed strongly against one another, for example in the case of strong temperature-related expansion of the busbars 8e, 108e or when the sliding contact 32e passes through the connecting element 40 and a resulting movement of one of the busbars 8e, 108e in the direction of travel of the sliding contact 32e towards the other busbar 108e, 8e, the contact between the rear spring contact tongues 81a-e in the direction of travel and the end of the busbar 8e may be slightly impaired or may even be completely lost for a short time due to sudden displacement.On the other hand, however, on the one hand, a good electrical contact between the then pressed together surfaces of the wide longitudinal sides 8g, 108g of the upturned ends of the busbars 8e, 108e is achieved by the contact pressure then acting in the direction of travel, and in addition, the spring contact tongues 81a'-e' located on the front side in the direction of travel are pressed even more strongly against the ends of the front busbar 108 in the direction of travel.

[0084] In this respect, the electrical connection terminal 74, due to its double-sided spring contact tongues 81a-e, 81a'-e', enables a good electrical connection to be established and maintained between the busbars 8e, 108e in any case.

[0085] Preferably, a distance AQ between the narrow side walls 82, 82' of the connecting terminal 74 extending in the longitudinal direction L and lying opposite one another in the transverse direction Q corresponds to the width B of the upturned ends of the busbars 8e, 108e.

[0086] If necessary, the additional contact points of the side walls 82, 82' on the narrow longitudinal sides 8g, 108g of the upturned ends of the busbars 8e, 108e can provide additional electrical contact to further improve current transmission. The opposing conductive flanks 79, 79', as extensions of the side walls 82, 82', can also be spaced apart by a distance AQ, so that the conductive flanks 79, 79' also contact the narrow longitudinal sides 8g, 108g of the upturned ends of the busbars 8e, 108e and thus provide additional electrical contact to further improve current transmission.

[0087] The electrical energy transmission between the busbars 8a-e and 108a-e of adjacent sections 2a, 2b of the conductor rail 2 thus takes place via the connecting terminal 74 in addition to the contact of the ends of the busbars 8e, 108e, so that even in the event of dynamic changes in the contact between the busbars 8e, 108e, e.g. when passing through the sliding contact 32e, a sufficient and permanent electrical connection is ensured.

[0088] The statements regarding the busbars 8e, 108e and the busbar connecting terminal 74 and busbar connector 60e connecting them also apply accordingly to the connection of the other busbars 8a-d, 108a-d. Reference symbol 1 conductor rail system 2 Conductor line, especially box conductor line 2a, 2b sections of conductor rail 3 box-shaped frame profile 4 longitudinal slot 5a, 5b track areas 6a, 6b lateral roller guide rails 7a-e Busbar brackets 8a-e busbars 8f wide long side of the busbars 8g narrow long side of the busbars 8h Front side of the busbars 9a-e Contact surfaces busbars 10 lateral guide groove 20 pantograph cars 21 frames 22, 23 Rollers (bottom) (double flanged rollers) 24, 25 Guide rollers (top) (double flanged rollers) 26a, 26b, 27a, 27b Wheel flanges Track rollers 28a, 28b, 29a, 29b Treads Rollers 30a, 30b, 31a, 31b Wheel flanges Guide rollers 32c, 32f sliding contacts (grounding sliding contacts) 32a, b, d sliding contacts (phase sliding contacts) 32e sliding contact (zero potential sliding contact) 33 funnel-shaped cable duct 34 lateral guide bar 40 connecting element 41, 41' first and second partial connecting element 42, 42' connecting contour 43, 43' connecting profiles 44, 44' side connecting straps 45, 45' side connection openings 46, 46' upper U-shaped locking tabs 47, 47' upper locking lugs 48a-e Insertion opening for rail connectors 49e, 49e' locking bars for locking lugs clamping head 50e, 50e' positioning stops 51 Longitudinal slot 60a-e busbar connector 61a-e mushroom-shaped clamping head 62, 62' clamping head parts 63, 63', 64, 64' locking lugs for insertion opening 65, 65' U-shaped locking tabs 66, 66' side locking lugs 67, 67' cover 68, 68' assault 69, 69' positioning bars, positioning elements 70 Receptacle for electrical connection terminal 71, 71' upper stops for electrical connection terminal 72, 72' Positioning pins for electrical connection terminal 73 funnel-shaped insertion opening for ends of busbars 74 electrical connection terminal (busbar connection terminal) 75 orbiting body 76 dovetail joint 77, 77' upper stops 78, 78' Positioning holes for positioning pins 79, 79' Guide rails for conductor rail ends 80, 80' funnel-shaped insertion aids 81a-e, 81a-e' spring contact tongues 82, 82' narrow side walls 103 box-shaped frame profile of the second section 104 Longitudinal slot 105a, 105b track areas 106a, 106b lateral roller guide rails 108a-e busbars 108f wide long side of the busbars 108g narrow long side of the busbars 108h Front side of the busbars 109a-e Contact surface busbars 110 lateral guide groove AK Distance between opposite contact elements in longitudinal direction AQ Distance between narrow side walls in transverse direction B Width of a busbar D Thickness of a busbar DK combined thickness of the busbars E Insertion direction of rail power connector in insertion opening H Height direction box conductor line, connecting element L Longitudinal direction box conductor line, connecting element Q Transverse direction box conductor line, connecting element I Interior box conductor line V interior connecting element QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2022 105 468 U1

[0002]

Claims

[1] Busbar connecting terminal (74) for the electrical and mechanical connection of a first free end of a first busbar (8a-e) extending in a longitudinal direction (L) to a second free end of a second busbar (108a-e) extending in the longitudinal direction (L), wherein the first and second ends each have an end face (8h, 108h) terminating the busbars (8a-e, 108a-e) and longitudinal sides (8f-g, 108f-g) adjoining them at an angle, wherein the first and second ends are angled relative to the longitudinal direction (L) such that the end faces (8h, 108h) point essentially in the same insertion direction (E) in which the busbar connecting terminal (74) is placed onto the ends of the busbars (8a-e, 108a-e), and a longitudinal side (8f) of the first end and a longitudinal side (108f) of the second end facing each other,wherein the busbar connecting terminal (74) has first contact elements (81a-e) for clamping engagement with the longitudinal side (8f) of the first end and second contact elements (81a'-e') opposite the first contact elements (81a-e) in the longitudinal direction (L) for clamping engagement with the longitudinal side (108f) of the second end, characterized by that a distance (AK) of the first and second contact elements (81a-e; 81a'-e') is smaller than a combined thickness (DK) of the mutually facing first and second ends of the busbars (8a-e, 108a-e). [2] Busbar connecting terminal (74) according to claim 1, characterized by that the contact elements (81a-e; 81a'-e') initially run in the insertion direction (E) and then their free ends are bent back against the insertion direction (E), wherein the free ends of the contact elements (81a-e; 81a'-e') are bent towards each other. [3] Busbar connecting terminal (74) according to claim 2, characterized bythat the distance (AK) of the first and second contact elements (81a-e; 81a'-e') is determined by the distance of the free ends of the contact elements (81a-e; 81a'-e') bent towards each other. [4] Busbar connecting terminal (74) according to claim 2 or 3, characterized by that the first and second contact elements (81a-e; 81a'-e') widen in a funnel shape in the insertion direction (E). [5] Busbar connecting terminal (74) according to claim 2 or 3, characterized by that the free ends of the first and second contact elements (81a-e; 81a'-e') run counter to the insertion direction (E) first towards each other and then away from each other. [6] Busbar connecting terminal (74) according to one of the preceding claims, characterized by that the first contact elements (81a-e) have a plurality of adjacent contact tongues and the second contact elements (81a'-e') have a plurality of adjacent contact tongues. [7] Busbar connecting terminal (74) according to one of the preceding claims, characterized by that the busbar connecting terminal (74) has a body (75) with an interior space for receiving the ends of the busbars (8a-e, 108a-e). [8] Busbar connecting terminal (74) according to one of the preceding claims, characterized by that the busbar connecting terminal (74) has, in the direction of insertion (E) of the busbar connecting terminal (74) onto the ends of the busbars (8a-e, 108a-e) behind the contact elements (81a-e; 81a'-e'), stops (77, 77') for engaging corresponding stops (71, 71') of a clamping head (61a-e) (61a-e) of a busbar connector (60a-e). [9] Busbar connecting terminal (74) according to claim 6, characterized by that the stops (71, 71', 77, 77') run transversely to the insertion direction (E). [10] Busbar connecting terminal (74) according to one of the preceding claims, characterized bythat the busbar connecting terminal (74) has opposing, funnel-shaped insertion aids (80, 80'). [11] Busbar connecting terminal (74) according to claim 10, characterized by that the insertion aids (80, 80') are arranged on guide flanks (79, 79') of the busbar connecting terminal (74) running in the insertion direction (E). [12] Busbar connecting terminal (74) according to one of the preceding claims, characterized by that the busbar connection terminal (74) has at least one positioning opening (78, 78') for a positioning element (72, 72'), in particular a positioning pin of a clamping head (62, 62') of a busbar connector (60a-e) surrounding the busbar connection terminal (74). [13] Busbar connecting terminal (74) according to claim 12, characterized by that the positioning opening (78, 78') is adapted to the shape of the positioning element (72, 72'). [14] Busbar connecting terminal (74) according to claim 12 or 13, characterized by that the positioning opening (78, 78') is introduced into a side of the busbar connection terminal (74) running transversely to the longitudinal direction (L) and / or transversely to the insertion direction (E). [15] Busbar connecting terminal (74) according to claim 12, 13 or 14, characterized by that the busbar connection terminal (74) has a further positioning opening (78') opposite the positioning opening (78). [16] Busbar connecting terminal (74) according to one of the preceding claims, characterized by that the busbar connecting terminal (74), or at least the contact elements (81a-e, 81a'-e') are made of an electrically conductive material. [17] Busbar connecting terminal (74) according to one of the preceding claims, characterized by that the busbar connection terminal (74) consists of a flat and / or strip-shaped material. [18] Busbar connecting terminal (74) according to claim 17, characterized by that the busbar connection terminal (74) is punched out or laser-cut from the flat and / or strip-shaped material and then bent into the three-dimensional shape of the busbar connection terminal (74), and / or wherein edges of the flat material to be connected are connectable or connected to one another by means of a form-fitting connection, in particular a dovetail connection (76). [19] Busbar connecting terminal (74) according to one of the preceding claims, characterized by that the busbar connecting terminal (74) has opposing, electrically conductive side walls (82, 82') which contact the longitudinal sides (8g, 108g) of the bent free ends of the busbars (8a-e, 108a-e) lying transversely to the longitudinal direction (L), in particular the narrow ones. [20] Busbar connecting terminal (74) according to claim 19, characterized bythat a distance (AQ) between the opposing, electrically conductive side walls (82, 82'), in particular transversely to the longitudinal direction (L), is equal to or smaller than a width (B) of the, in particular wide, longitudinal sides (8f, 108f) of the bent free ends of the busbars (8a-e, 108a-e), in particular transversely to the longitudinal direction (L). [21] Busbar connector (60a-e) for insertion in an insertion direction (E) into an insertion opening (48a-e) of a connecting element (40) for adjacent sections (2a, 2b) of a conductor line (2), with a clamping head (61a-e) (61a-e) for receiving an electrical busbar connection terminal (74), characterized by that the busbar connecting terminal (74) is designed according to one of claims 1 to 20. [22] Busbar connector (60a-e) according to claim 21, characterized bythat the clamping head (61a-e) preferably has projections (68, 68') projecting in the longitudinal direction (L) with positioning elements (69, 69') which cooperate with positioning stops (50e, 50e') on the insertion opening (48a-e) for positioning and / or fastening the clamping head (61a-e) in the insertion opening (48a-e). [23] Busbar connector (60a-e) according to claim 21 or 22, characterized by that the clamping head (61a-e) has a receiving space (70) for receiving the busbar connecting terminal (74). [24] Busbar connector (60a-e) according to claim 23, characterized by that the receiving space (70) for holding the clamping head (61a-e) has locking webs and / or locking lugs (63, 63', 64, 64') which interact with corresponding locking webs (49e, 49e') and / or locking lugs on the clamping head (61a-e). [25] Busbar connector (60a-e) according to one of claims 21 to 24, characterized bythat the clamping head (61a-e) preferably has positioning elements (72, 72') extending transversely to the insertion direction (E) and preferably in the longitudinal direction (L), in particular positioning pins for corresponding positioning openings (78, 78') of the busbar connecting terminal (74). [26] Busbar connector (60a-e) according to one of claims 21 to 25, characterized by that the two clamping head parts (62, 62') are identical. [27] Busbar connector (60a-e) according to one of claims 21 to 26, characterized by that the busbar connector (60a-e) consists of an electrically insulating material, in particular plastic. [28] Busbar connector (60a-e) according to one of claims 21 to 27, characterized bythat one clamping head part (62, 62') has at least one locking tab (65, 65') which preferably runs in the longitudinal direction (L) and the other clamping head part (62, 62') has a corresponding lateral locking lug (66, 66') which preferably runs in the longitudinal direction (L) and which cooperates with the locking tab (65, 65'). [29] Busbar connector (60a-e) according to one of claims 21 to 28, characterized by that the clamping head (61a-e) has a cover (67, 67') which is located behind the busbar connection terminal (74) in the insertion direction (E) of the busbar connector (60a-e), which cover covers the busbar connection terminal (74) from the environment when the busbar connector (60a-e) is inserted into the insertion opening (48a-e). [30] Busbar connector (60a-e) according to one of claims 21 to 29, characterized bythat the busbar connector (60a-e) has, in the insertion direction (E), in front of the busbar connecting terminal (74), an insertion opening (73), in particular widening in a funnel shape in the insertion direction (E), for inserting the ends of the busbars (8a-e, 108a-e) between the contact elements (81a-e, 81a'-e') into the receiving space (70). [31] Connecting element (40) for the electrical and mechanical connection of sections (2a, 2b) of the conductor line (2) which are adjacent in a longitudinal direction (L) of a conductor line (2), wherein the sections (2a, 2b) of the conductor line (2) have frame profiles (3, 103) which extend in the longitudinal direction (L) and surround an interior space (I) and have an inner contour, wherein the interior space (I) is accessible from the outside via longitudinal slots (4, 104) in the frame profiles (3, 103) which run in the longitudinal direction (L), in the interior space (I) a plurality of busbars (8a-e, 108a-e) are provided for sliding contact with a respective sliding contact (32a-f) of a current collector carriage (20) which can be moved along the conductor line (2), wherein the current collector carriage (20) has rotatably mounted rollers (22, 23) which are supported by their running surfaces (28a, 28b, 29a, 29b) on corresponding track surfaces (5a, 5b, 105a,105b) of the frame profiles (3, 103) of the conductor line (2), wherein the connecting element (40) has a connecting profile (43, 43') adapted to the inner contour of the frame profiles (3, 103), to which connecting contours (42, 42') extend in the longitudinal direction (L) on both sides of the partial sections (2a, 2b) and are adapted to the outer contours of the frame profiles (3, 103) for encompassing the frame profiles (3, 103), wherein the connecting profile (43, 43') is divided into a first and a second connecting profile (43, 43'), , characterized by that on the first and second connecting profiles (43, 43') a part of insertion openings (48a-e) for busbar connectors (60a-e) according to one of claims 21 to 30 is provided, into which the busbar connectors (60a-e) can be inserted in the assembled state of the first and second connecting profiles (43, 43'). [32] Connecting element (40) according to claim 31, characterized bythat the insertion openings (48a-e) have locking webs (49e, 49e') or locking lugs for locking with corresponding locking lugs (63, 63', 64, 64') or locking webs of the busbar connectors (60a-e) in the respective insertion opening (48a-e). [33] Connecting element (40) according to claim 31 or 32, characterized by that a lateral connecting opening (68) is provided on the first connecting profile (43), into which a lateral connecting tab (47') arranged on the second connecting profile (43') and projecting in the longitudinal direction (L) over this to the first connecting profile (43) engages for fastening the two connecting profiles (43, 43') to one another. [34] Connecting element (40) according to claim 33, characterized bythat a lateral connecting opening (48') is provided on the second connecting profile (43'), into which a lateral connecting tab (67) arranged on the first connecting profile (43) and projecting in the longitudinal direction (L) over this to the second connecting profile (43') is provided for further fastening the two connecting profiles (43, 43') to one another. [35] Connecting element (40) according to one of claims 31 to 34, characterized byin that a locking tab (46) is provided on the first connecting profile (43), which interacts with a locking lug (47') arranged on the second connecting profile (43'), wherein when the connecting profiles (43, 43') are assembled in the longitudinal direction (L), the locking tab (46) is pushed over the locking lug (47') and engages therewith, and wherein preferably on the second connecting profile (43') a further locking tab (46') is provided, which interacts with a further locking lug (47) arranged on the first connecting profile (43), wherein when the connecting profiles (43, 43') are assembled in the longitudinal direction (L), the further locking tab (46') is pushed over the further locking lug (47) and engages therewith. [36] Connecting element (40) according to one of claims 31 to 35, characterized by that the connecting profile(s) (8a-e, 108a-e) is box-shaped. [37] Conductor line (2) with sub-sections (2a, 2b) adjacent in its longitudinal direction (L), wherein the sub-sections (2a, 2b) have frame profiles (3, 103) extending in the longitudinal direction (L) and surrounding an interior space (I) with an inner contour, wherein the interior space (I) is accessible from the outside via longitudinal slots (7) in the frame profiles (3, 103) running in the longitudinal direction (L), wherein in the interior space (I) a plurality of conductor rails (8a-e, 108a-e) are provided for sliding contact with a respective sliding contact (32a-f) of a current collector carriage (20) movable along the conductor line (2), wherein the current collector carriage (20) has rotatably mounted rollers (22, 23) for moving in the longitudinal direction (L) along the conductor line (2), which rollers with their running surfaces (28a, 28b, 29a, 29b) roll on corresponding track surfaces (5a, 5b) of the frame profiles (3, 103) of the conductor line (2), characterized bythat a connecting element (40) according to one of claims 31 to 36 is provided for connecting the partial sections (2a, 2b) of the conductor line (2). [38] Conductor line (2) according to claim 37, characterized by that the first end of the first conductor rail is angled away from the interior of the conductor rail at an angle of 85° to 90°, preferably at an angle of 90°, relative to the longitudinal direction, and the second end of the second conductor rail is angled away from the interior of the conductor rail at an angle of 90° to 85°, preferably at an angle of 90°, relative to the longitudinal direction. [39] Conductor line (2) according to claim 37 or 38, characterized by that the bent ends of the busbars (8a-e, 108a-e) protrude into insertion openings (48a-e) of the connecting element (40a-e) and are each encompassed by electrical busbar connecting terminals (74). [40] Conductor line (2) according to one of claims 37 to 39, characterized by that the busbars (8a-e, 108a-e) consist of a strip-shaped material, in particular wherein wider strip surfaces of the busbars (8a-e, 108a-e) form sliding surfaces (9a-e; 109a-e) for the sliding contacts (32a-f). [41] Conductor line (2) according to one of claims 37 to 40 characterized bythat the first busbar (3a-e) has an end face (8h, 108h) terminating its first end and the second busbar (108a-e) has an end face (8h, 108h) terminating its second end, and longitudinal sides adjoining it at an angle, wherein the first and second ends each have an end face (8h, 108h) terminating the busbars (8a-e, 108a-e) and longitudinal sides (8f-g, 108f-g) adjoining it at an angle, wherein the first and second ends are angled relative to the longitudinal direction (L) such that the end faces (8h, 108h) point essentially in the same insertion direction (E) in which the busbar connecting terminal (74) is placed onto the ends of the busbars (8a-e, 108a-e), and a longitudinal side (8f) of the first end and a longitudinal side (108f) of the second end face each other, [42] Use of a busbar connection terminal (74) according to one of claims 1 to 20 for the electrical and mechanical connection of the first free end of the first busbar (8a-e) extending in a longitudinal direction (L) to the second free end of the second busbar (108a-e) extending in the longitudinal direction (L). [43] Use of a busbar connector (60a-e) according to one of claims 21 to 30 in a connecting element (40) according to one of claims 31 to 36.

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