Carrier rail, and carrier rail system having carrier rails

Abstract

The present invention relates to a carrier rail (1) for a carrier rail system, comprising: an elongate carrier profile (2), which delimits an interior (3); a first busbar (6) having at least one first electrical conductor (60) for electrically connecting electrical or electronic components via an open longitudinal side (12) of the carrier profile (2), wherein the first busbar (6) is accommodated in the interior (3) of the carrier profile (2) and extends along the carrier profile (2); and a second busbar (7) having at least one second electrical conductor (70) for electrically connecting electrical or electronic components, which second busbar (7) extends on the outside with respect to the interior (3) and along the carrier profile (2). The invention also relates to a carrier rail system for connecting electrical or electronic components, comprising a plurality of the carrier rails (1) according to the invention.

Description

[0001] The present invention relates to a support rail for a support rail system with an elongated support profile defining an interior space, in which a conductor rail is arranged extending along the support profile. The present invention also relates to a support rail system comprising several such support rails.

[0002] Mounting rails of the type mentioned above are generally known. Electrical supply systems are provided within the support profile of these known mounting rails, typically extending along the elongated rail within the interior of the profile. Examples of such supply systems include socket wiring or a single or multi-section busbar. Electrical connection areas or conductors of the supply system are generally accessible only through the opening on the bottom side of the mounting profile. Accessibility is usually hampered by the fact that the access opening is at least partially obstructed by a cover strip, linear luminaires, or other electrical or electronic components.

[0003] EP 0 343 384 A2 discloses a busbar with an extruded body having a cell-shaped cross-section. The busbar includes closed and open channels, each containing electrical conductors.

[0004] DE 38 12 465 A1 relates to a busbar for mounting and simultaneously supplying power to a lighting system consisting of controllable spotlights or luminaires, which is equipped with an electronic data storage and control device for variably illuminating a room object, consisting of an essentially U-shaped extruded metal or plastic profile with an insulating profile inserted therein.

[0005] DE 2 327 078 A1 discloses an electrical current distribution rail for electrical current collectors, with a space accommodating one or more adapters, accessible from one side of the current rail and electrical conductors accessible from this accommodating space.

[0006] It is therefore an object of the present invention to provide a mounting rail and a mounting rail system equipped with such a mounting rail which enables more flexible connection options for electrical or electronic consumers.

[0007] This problem is solved by the subject matter of the independent claim. The dependent claims further develop the central idea of ​​the present invention in a particularly advantageous manner.

[0008] According to a first aspect, the present invention therefore relates to a support rail for a support rail system, which has an elongated support profile. The elongated support profile defines an interior space. The support rail further comprises a first busbar with at least one electrical conductor for the electrical connection of electrical or electronic components via an open longitudinal side of the support profile. The first busbar is located within the interior space of the support profile and extends along the profile. The support rail further comprises a second busbar with at least one second electrical conductor for the electrical connection of electrical or electronic components. The second busbar extends externally with respect to the interior space and along the support profile.

[0009] By providing an additional busbar that, unlike conventional designs, does not extend within the interior confined by the support profile and is therefore only accessible through the single opening, but instead explicitly runs outside the interior confined by the support profile—for example, on its outer surface—significantly more flexible connection options can be provided. Access to such a second power supply level via the second busbar is considerably easier from the outside, especially if the first busbar is already occupied by components or its accessibility is obstructed by them. This makes it possible, for example, to easily connect additional devices (such as those independent of a linear luminaire) and thus supply them with power and / or data.The additional, separate, and external busbar significantly increases the flexibility of a corresponding mounting rail. This allows for easy external access and connection of additional devices without disrupting, for example, a continuous light line on the mounting rail. Providing a second busbar may not even require structural modifications to existing mounting profiles, allowing existing mounting rails to be retrofitted. Overall, the production of a mounting rail according to the invention requires little to no investment compared to conventional mounting rails, and its manufacture is particularly simple.This is particularly important because known busbars, for example, can be easily extruded in the conventional way and later easily provided by, for example, screwing them on, snapping them in or otherwise simply providing or inserting them.

[0010] The second busbar extends lengthwise along the support profile and is preferably directly connected to it. A direct connection is preferably achieved through a positive fit, such as a snap-fit ​​connection, and / or a force-fit, such as a screw connection, and / or a material bond, such as an adhesive bond. This allows the second busbar to be designed in a particularly space-saving manner. The direct connection to the support profile also ensures a secure fit. For example, the busbar can have connecting structures that interact with corresponding structures of the support profile to fasten the second busbar to the profile, preferably in a detachable manner. Of course, the second busbar can also be permanently connected to the support profile, for example, by bonding it.

[0011] The support profile has a substantially U-shaped cross-section when viewed longitudinally, with a connecting leg and two side legs extending away from the connecting leg and preferably parallel to it, which define the interior space. This provides a simple-to-manufacture support profile geometry that also offers a sufficiently large interior space while maintaining a compact design.

[0012] The first busbar can extend longitudinally along at least one of the side legs and / or the connecting leg. This allows the first busbar to be positioned at a preferred location. Various factors may be relevant to this position, such as the design and positioning of the electrical coupling partner of an electrical or electronic component to be connected to the busbar, as well as compliance with safety standards. The invention is not limited to a specific position and allows the user complete freedom to adapt it to the given circumstances and requirements.

[0013] The second busbar extends lengthwise along the outside of the connecting leg. There are essentially no limits to the positioning of the second busbar. It can be installed at any point along the mounting rail, depending on the requirements. Various factors can influence its positioning, such as the function or application of the second busbar, the devices to be connected, and, where applicable, compliance with relevant safety standards.

[0014] The second busbar can extend along elongated structural areas of the support profile, such as longitudinal grooves, channels, spaces, or recesses. This allows for a compact overall design and secure positioning of the second busbar, provided, for example, that it has corresponding connection structures that can be linked to these structural areas to securely mount the second busbar. It is also conceivable that the busbar extends along the outer surface, preferably a flat section of the outer surface of the support profile. This allows for secure and precise positioning of the busbar. As already mentioned, the present invention does not fundamentally limit the positioning of the second busbar, as long as it is located on the exterior of the interior.

[0015] The support profile, and preferably the connecting leg, can have a fastening structure extending preferably along the support profile for attaching the mounting rail. This allows the support profile to be easily attached to a mounting surface – for example, a ceiling or wall. The mounting rail can be screwed directly to the mounting surface or connected using a coupling element, such as a retaining spring, which is itself attached to the mounting surface. The fastening structure can preferably comprise the structural areas and / or part of the (flat) outer surface of the support profile. In this respect, the fastening structure can also be used to provide a second busbar, further increasing its range of applications and flexibility.

[0016] The fastening structure can have at least two sections angled relative to each other. For example, the fastening structure can have a T-shape in cross-section. This provides a particularly effective and secure fastening structure. Preferably, at least one of the sections can form the structural area. Alternatively or additionally, it is conceivable that the sections preferably form the structural area together with another part of the support profile. This can be achieved, for example, by the fastening structure having a T-shape, so that the space below the upper transverse leg between it and the support profile forms or comprises the structural area.

[0017] The mounting structure can be hollow and preferably (partially) define a portion of the interior space. Therefore, the mounting structure can also be used to accommodate additional first busbars.

[0018] The busbar can have a conductor support structure in which the electrical conductors are held. This conductor support structure can preferably be designed in a lamellar or corrugated form to create elongated conductor support grooves, with the electrical conductors preferably being held in or extending along these grooves. In this way, the conductors can be securely held, for example, to provide reliable touch protection. Furthermore, the conductor support grooves can be easily used to establish a secure and rapid connection with appropriate contact elements.

[0019] The support profile on the one hand, and the second busbar (preferably its conductor grooves) on the other, can be designed and positioned relative to each other in such a way that direct contact from the outside with a straight wire of a defined diameter d, e.g., 1 mm, is prevented. Such a design, which prevents contact with a corresponding test wire, enables a standard-compliant design of the support rail, particularly for high-voltage busbars.

[0020] The support profile, and preferably at least one of the side legs or the connecting leg, or the hollow mounting structure, can have a through-opening. This allows at least one of the busbars to be electrically contacted through the through-opening from the side of the support profile facing away from the side containing that busbar. This applies to both the first busbar and the second busbar. In the case of the first busbar, the through-opening would also allow electrical contacting of the first busbar from the outside. In the case of the second busbar, electrical contacting through the through-opening would also be possible from the inside or interior of the support profile. In this way, the range of applications and the flexibility of the support profile according to the invention can be further increased.

[0021] The support rail can preferably also include a fastening element for attaching or mounting the support rail to a mounting surface, such as a ceiling or wall. The fastening element can, for example, be a retaining spring. This preferably allows for a detachable connection between the support profile and the fastening element. The fastening element is particularly preferably detachably connected to the support profile, and preferably to the support profile's fastening structure, by means of its own fastening structure. This is intended to enable simple mounting of the support rail. For example, the fastening element can be pre-assembled on the mounting surface. The support profile can then simply be snapped or locked into the fastening element. If necessary, securing devices, such as screws, can be provided to secure the fastening element to the support profile.

[0022] The second busbar can preferably run in or through a space formed between the mounting element and the support profile, preferably the connecting leg or its mounting structure or one of its sections, in order to extend externally and along the support profile with respect to the interior, preferably along the flat section of the outer surface of the support profile. Thus, the second supply level of the second busbar can be implemented in an existing and previously unused space without requiring complex modifications to known support profiles. The second busbar is also provided on a protected rear side of the support profile.

[0023] The mounting rail further comprises at least one electrical or electronic component which is electrically coupled to the first and / or second busbar, preferably to their first and / or second electrical conductors. The electrical or electronic component is also mechanically coupled via retaining structures of the mounting profile. The electrical or electronic component can be, for example, a luminaire, such as a linear luminaire or a spotlight, a control gear, or a sensor, such as a motion sensor or a light sensor. The invention is not limited with respect to the electrical or electronic components to be coupled via the first and second busbars, so that the mounting rail can be configured and reconfigured in any way according to customer requirements.

[0024] According to a further aspect, the present invention also relates to a mounting rail system for connecting electrical or electronic components, which comprises several mounting rails according to the present invention. The mounting rails can preferably be arranged longitudinally in series with one another. The first busbars of adjacent mounting rails can be electrically coupled to each other and / or the second busbars of adjacent mounting rails can be electrically coupled to each other. The advantages of the additional second busbar can therefore also be transferred to an entire mounting rail system by extending its functionality along the entire mounting rail system.

[0025] The support profiles (to each other) and / or the first conductor rails (to each other) and / or the second conductor rails (to each other) of adjacent support rails can also be mechanically coupled. For this purpose, the support rail system can, for example, also include a mechanical connector for mechanical coupling. In this way, a completely safe and cohesive support rail system can be formed.

[0026] The mounting rail system can also include an electrical connector for electrical coupling. This allows for simple electrical coupling of adjacent mounting rails, and in particular of their first and / or second busbars.

[0027] The mounting rail system can particularly preferably also include a connecting element, such as a connecting rail. This connecting element can comprise at least a portion of the electrical connector and / or the mechanical connector. This allows for a simple electrical and / or mechanical connection.

[0028] Further features and advantages of the present invention will now be described with reference to the figures in the accompanying drawings. These show: Figure 1 shows a frontal cross-sectional view of a support rail according to a first embodiment of the present invention, viewed in the longitudinal direction; Figure 2 shows a frontal cross-sectional view of a support rail according to a second embodiment of the invention, viewed in the longitudinal direction; Figure 3 shows a schematic frontal cross-sectional view of a support rail according to a third embodiment of the invention, viewed in the longitudinal direction; Figure 4 shows a schematic frontal cross-sectional view of a support rail according to a fourth embodiment of the present invention, viewed in the longitudinal direction; Figure 5 shows a partial perspective view of a support rail according to a fifth embodiment of the present invention; Figure 6 shows a partial perspective view of a support rail according to a sixth embodiment of the present invention.Figure 7 shows a perspective partial view of a support rail according to a seventh embodiment of the present invention, Figure 8 shows a perspective partial sectional view of the support rail according to , Figure 7 , and Figure 9 a frontal view of the support rail according to Figure 7 .

[0029] The figures show different embodiments of a support rail 1 according to the invention for a support rail system. The support rail 1 has an elongated support profile 2, which defines an interior space 3. As can be seen from the exemplary embodiments, the support profile 2 has a substantially U-shaped cross-section in the longitudinal direction with a connecting leg 10 and two side legs 11 extending away from the connecting leg 10 and preferably parallel to it, which define the interior space 3. The support profile 2 has an open longitudinal side 12 through which the interior space 3 is accessible.

[0030] The support profile 2 can have elongated structural areas 5 extending in the longitudinal direction of the support rail 1 or the support profile 2. These structural areas 5 can be formed, for example, as longitudinal grooves, longitudinal channels, elongated recesses, or elongated spaces or other cross-sectional profile sections that are at least partially enclosed in cross-section by a part of the support profile in the longitudinal direction. Figures 1, 2 , 4 and 5 Examples of such spaces (longitudinal spaces or elongated spaces) viewed in cross-section in the longitudinal direction are shown 52. Figures 3, 4, 6 and 7-9 The illustrations also show spaces 52 partially enclosed by the supporting profile 2 or recesses 50, 51. The embodiments also show numerous other structural areas 5, such as longitudinal grooves 53 or retaining structures 54 (see illustrations). Figures 1, 2 , 5, 6 , 7-9), which can serve different purposes and will be described in more detail below.

[0031] For example, the support profile 2 can be formed from a sheet metal part (e.g., as a stamped and bent part) or from a thin metal material, for example, using an extrusion process. By appropriately shaping the cross-section of this sheet metal part or profile, numerous structural areas 5 can be provided, which then serve, for example, to accommodate or hold components, reinforce the support profile 2, or fulfill other purposes; for example, by forming contact surfaces, grid structures, or receiving spaces.

[0032] The support profile 2, and preferably its connecting leg 10, can have a preferably longitudinal fastening structure 4 for fastening the support rail 1 to a mounting area, such as a ceiling or wall. The fastening structure 4 can preferably comprise the structural areas 5 and / or a portion of the (flat) outer surface A of the support profile 2. The fastening structure 4 can have at least two or more mutually angled sections 40, 41. In the exemplary embodiments of Figures 1, 2 , and 4 to 9 The fastening structure 4 is essentially T-shaped; here with a vertical leg section 40 extending from the connecting leg 10, and a transverse leg section 41 extending transversely at the distal end of the vertical leg section 40 with respect to the connecting leg 10. Figure 3The vertical leg section 40 is tapered towards the transverse leg section, thus having two obliquely extending inclined sections 42, 43. At least one of the sections 40 (42, 43), 41 can preferably have the structural region 5. This is evident, for example, from the embodiment of the Figure 3 , in which the vertical leg section 40 and its two oblique sections 42, 43 each have the recesses 50 as structural areas 5. The same applies to the in Figure 6 The setback 51 shown in the upper transverse leg section 41 forms a corresponding structural area 5. Alternatively or additionally, it is also conceivable that the sections 40, 41 preferably together with a further part of the supporting profile 2, here together with the connecting leg 10, form the structural area 5, as is the case, for example, in the Figures 1, 2 , 4, 5 and 7-9 shown through the corresponding areas or rooms 52.

[0033] As can also be seen from the figures, the fastening structure 4 can also be hollow and thus preferably define a part of the interior space 3.

[0034] How the Figures 7 to 9 As can be seen by way of example, the support rail 1 can further have a fastening element 9 – here in the form of a retaining spring – for mounting the support rail 1 to the mounting area. For this purpose, the fastening element 9 can be pre-assembled on the mounting area and the support profile 2 can then simply be snapped into it. As shown, the fastening element 9 can have an essentially U-shaped form with a fastening leg 90 for attachment to the mounting area and two of these extending in one direction (here in Fig. 9 downward-extending support legs 91 with support structures 92 at their distal end relative to the fastening leg 90. These support structures 92 can then, as in Figures 7 to 9shown, the fastening structure 4 is brought into engagement. For this purpose, the support structures 92 can, for example, engage or snap into the structural areas 5 or spaces 50 formed by the angled sections 40, 41, preferably with a further part of the support profile 2, here together with the connecting leg 10.

[0035] The mounting rail 1 further comprises a first busbar 6 with at least one or more first electrical conductors 60 for the electrical connection of electrical or electronic components via the open longitudinal side 12 of the support profile 2. For the sake of clarity, in Figure 1 No first electrical conductors 60 are shown. The first busbar 6 is received in the interior 3 of the support profile 2 and extends along the support rail 1 or the support profile 2. The first busbar 6 preferably extends longitudinally along the inside of at least one of the side legs 11 (cf. Figures 1 to 4) and / or the connecting leg 10 (see Figure 4 For the sake of simplicity, the following are included in the Figures 5 to 9 No first busbars 6 are shown, which are comparable to the embodiments of the Figures 1 and 2 may be provided for.

[0036] The support rail 1 further comprises a second busbar 7 with at least one second electrical conductor 70 for the electrical connection of electrical or electronic components. The second busbar 7 extends externally and along the support profile 2 with respect to the interior 3, as can be clearly seen in all figures. Preferably, the second busbar 7 extends along the support profile 2 and is particularly preferably directly connected to the support profile 2. The direct connection can preferably be provided by means of a positive connection, such as a snap-fit ​​connection, and / or by means of a frictional connection, such as a screw connection, and / or by means of a material connection, such as an adhesive connection. For example, the direct connection can be achieved by means of additional fasteners, such as screws. The second busbar 7 can also, for example, be glued to the outer surface A of the support profile 2.Preferably, however, the connection takes place through appropriate interaction in or with the structural areas 5; preferably by means of a force-fit and / or form-fit connection. For example, the busbar, as in the . Figures 5 and 6 The components are shown, inserted into the structural areas 5 and preferably clamped in place. Preferably, corresponding connection structures are provided so that the second busbar 7 can, for example, be snapped into the support profile 2, thus ensuring secure mounting.

[0037] How especially the Figures 1 and 2As can be seen, the first busbar 6 can be snapped into corresponding structural areas 5, here in the form of longitudinal grooves 53, in a known manner using appropriate connecting structures 61, and thus securely received in the support profile 2. The second busbar 7 can also be connected to the support profile 2 in a comparable manner. The connection between busbars 6, 7 and the support profile 2 is preferably detachable.

[0038] The second busbar 7 extends lengthwise along the outside of the connecting leg 10, such as the Figures 2 and 7-9 can be seen from this.

[0039] According to a particularly preferred embodiment, the second conductor rail 7 extends, as already described above, into the elongated structural areas 5 of the support profile (cf. Figures 1 to 6 ) and / or also on a flat section of the outer surface A of the support profile 2, such as the Figures 2 and 7 to 9show. How in particular the Figure 9 As can be seen, the second busbar 7 can run in or through a space 93 formed between the fastening part 9 and the support profile 2 (here the connecting leg 10 or its fastening structure 4 or its transverse leg section 41) in order to extend outside and along the support profile 2 with respect to the interior 3, preferably on the planar section of the outer surface A of the support profile 2.

[0040] How especially the Figures 1, 2 , 5 and 6 As can be seen, the busbars 6, 7 can each have a conductor receiving structure 62, 72 in which the electrical conductors 60, 70 are received. Figure 1 For the sake of simplicity, the second busbar 7 is represented only by its second electrical conductor 70. In the Figures 3 and 4For the sake of simplicity, the busbars 6, 7 are represented only by their conductor support structures 62, 72. The conductor support structures 62, 72 can be, as shown in particular in Figures 1, 2 , 5 and 6 The conductors 60, 70 are preferably formed in a lamellar or wave shape to create elongated conductor receiving grooves 63, 73. The electrical conductors 60, 70 are then preferably received in the conductor receiving grooves 63, 73 or extend longitudinally within them. Thus, the electrical conductors 60, 70 can be provided in a preferred and defined position, and therefore, defined touch protection can also preferably be ensured. A continuous tap can also be enabled in this way. However, it is also conceivable that the (second) electrical conductors 70, in particular those of the second busbar 7, are essentially embedded in the second conductor receiving structures 72, as shown in the exemplary embodiment of the Figures 7 to 9The second electrical conductors 70 can then, for example, be electrically contactable via defined local openings in the second conductor receiving structure(s) 72; this with respect to the interior 3 from the outside and / or from the inside.

[0041] As in particular the Figure 2As can be seen, the support profile 2 on the one hand and the second busbar 7 (preferably its conductor grooves 73) on the other hand can be designed and positioned relative to each other in such a way that direct contact from the outside with a straight wire D with a defined diameter d (e.g., d = 1 mm) is prevented. In principle, other wire diameters d are also conceivable; depending on the requirements of the test standard, a suitable test finger or test wire D can be selected. Thus, due to the design and positioning of the support profile 2 on the one hand and the second busbar 7 on the other, it is possible to prevent direct contact from the outside with a straight wire D with a defined diameter d, which would allow it to come into contact with the corresponding electrical conductor 70. Therefore, the second busbar 7, although located on the outside relative to the support profile 2, can also be used for high-voltage applications.

[0042] The support profile 2 and preferably at least one of the side legs 11 or the connecting leg 10 or the hollow fastening structure 4 can further have a through-opening 8. This is in Figure 1 schematically represented. In this way, it is intended to make it possible to electrically contact the busbar 6, 7 from a side of the support profile 2 facing away from the side of the support profile 2 having the busbar 6, 7, through the through-opening 8. In the embodiment according to the Figures 7 to 9The through-opening(s) 8 in the support profile 2 can be aligned with the opening(s) in the second conductor support structure(s) 72, thus electrically contacting the second electrical conductors 70 via the interior 3 or electrically coupling them to the first busbars 6 or their first electrical conductors 60. The electrical contact through the through-openings 8 is illustrated by example in the Figure 1 and 9The second busbar 7 is shown schematically; arrows P1 indicate an electrical contact direction of the outer second busbar 7 from the outside, whereas arrows P2 indicate a contact direction of the outer second busbar 7 from the inside, i.e., via the interior space 3. Similarly, through-openings can also be provided through which the inner first busbar 6 can be accessed and contacted from the outside through the support profile 2.

[0043] The mounting rail 1 further comprises at least one electrical or electronic component (not shown) which can be electrically coupled to the first and / or the second busbar 6, 7 and preferably to their first and / or second electrical conductors 60, 70. The electrical or electronic component is also mechanically coupled via retaining structures 54 of the mounting profile 2. These retaining structures 54 can preferably also be formed by structural areas 5. The electrical or electronic components can be, for example, a luminaire, such as a linear luminaire or a spotlight, a control gear, a sensor, such as a motion sensor or a light sensor, and other electrical or electronic components.

[0044] Several of the mounting rails 1 according to the invention can preferably be assembled to form a mounting rail system. For this purpose, the mounting rails 1 are preferably arranged longitudinally in series with one another. The first busbars 6 of adjacent mounting rails 1 can then be electrically coupled to each other. Likewise, the second busbars 7 of adjacent mounting rails 1 can be electrically coupled to each other. For this purpose, the mounting rail system can further comprise an electrical connector for electrical coupling. It is also conceivable that corresponding electrical coupling elements 74 are already integrated into the busbars 6, 7, which can be plugged into each other, for example, in the form of a simple plug-socket connection. This is shown by way of example in the partial sectional view of the Figure 8to identify where (second) electrical coupling elements 74 are provided as sockets at the ends of the second electrical conductors 70, which are also embedded in the second conductor receiving structures 72 and are accessible via insertion openings 75 in the second conductor receiving structure 72, e.g. for a connector.

[0045] The support profiles 2 and / or the first busbars 6 and / or the second busbars 7 of adjacent support rails 1 can also be mechanically coupled to each other. For this purpose, the support rail system can also include a mechanical connector for mechanical coupling. Of course, it is also conceivable that the support profiles 2 or the busbars 6, 7 already have corresponding (integral) mechanical connectors.

[0046] The mounting rail system can further preferably include a connecting element, such as a connecting rail, which incorporates at least a portion of the electrical connector and / or the mechanical connector. This simplifies the coupling of adjacent mounting rails 1.

[0047] The present invention is not limited to the embodiments described above, as long as it is encompassed by the subject matter of the following claims. The features in the embodiments described above can be combined and interchanged in any way.

Claims

1. A trunking rail (1) for a trunking system, comprising: ∘ an elongated support profile (2) defining an interior (3); ∘ a first busbar (6) having at least one first electrical conductor (60) for electrically connecting electrical or electronic components via an open longitudinal side (12) of the support profile (2), the first busbar (6) being accommodated in the interior (3) of the support profile (2) and extending along the support profile (2); and ∘ a second busbar (7) having at least one second electrical conductor (70) for electrically connecting electrical or electronic components, which extends, with respect to the interior (3), on the outside and along the support profile (2); wherein the trunking rail (1) further comprises at least one electrical or electronic component, the electrical or electronic component being electrically coupled to the first and / or the second busbar (6, 7) and additionally mechanically coupled via retaining structures (54) of the support profile (2); and wherein the support profile (2) has a substantially U-shaped cross-section (as viewed in the longitudinal direction) with a web portion (10) and two side legs (11) extending from the web portion (10) and preferably parallel to each other, which define the interior (3); characterized in that the second busbar (7) extends along the outside of the web portion (10).

2. The trunking rail (1) according to claim 1, wherein the second busbar (7) is directly connected to the support profile (2), preferably via a positive-fit connection (e.g. a snap connection) and / or a friction-fit connection (e.g. a screw connection) and / or a material-bond connection (e.g. an adhesive bond).

3. The trunking rail (1) according to claim 1 or 2, wherein the first busbar (6) extends along an interior side of at least one of the side legs (11) and / or along the web portion (10).

4. The trunking rail (1) according to any one of the preceding claims, wherein the second busbar (7) extends in elongated structural regions (5) of the support profile (2), such as longitudinal grooves, longitudinal slots, elongated cavities or elongated recesses, or along a planar portion of the outer side (A) of the support profile (2).

5. The trunking rail (1) according to any one of the preceding claims, wherein the support profile (2), preferably the web portion (10), has a mounting structure (4) extending preferably along the support profile (2) for mounting the trunking rail (1), and wherein the mounting structure (4) preferably comprises the or a part of the structural regions (5) and / or a part of the outer side (A) of the support profile (2).

6. The trunking rail (1) according to claim 5, wherein the mounting structure (4) has at least two sections (40, 41) angled relative to each other, wherein preferably at least one of the sections (40, 41) comprises a structural region (5), and / or wherein the sections (40, 41) together with another portion of the support profile (2) form a structural region (5), and / or wherein the mounting structure (4) is hollow and preferably defines a part of the interior (3).

7. The trunking rail (1) according to any one of the preceding claims, wherein the busbars (6, 7) each have a conductor-receiving structure (62, 72), preferably in a lamellar or corrugated form to define elongated conductor-receiving grooves (63, 73), in which the electrical conductors (60, 70) are preferably accommodated.

8. The trunking rail (1) according to any one of the preceding claims, wherein the support profile (2) on the one hand, and the second busbar (7) (preferably its conductor-receiving grooves (73)) on the other hand, are configured and positioned relative to each other such that a direct contact from outside with a straight wire (D) of a defined diameter d (for example 1 mm) is prevented.

9. The trunking rail (1) according to any one of the preceding claims, wherein the support profile (2), preferably at least one of the side legs (11) or the web portion (10) or the hollow mounting structure (5), has a through-opening (8) to enable an electrical contact with at least one of the busbars (6, 7) from a side of the support profile (2) opposite to the side on which that busbar (6, 7) is provided, through the through-opening (8).

10. The trunking rail (1) according to any one of the preceding claims, further comprising a fastening element (9), preferably a spring clip, for attaching the trunking rail (1) to a mounting surface, wherein the fastening element (9) is preferably connectable (in particular releasably) to the support profile (2) and preferably its mounting structure (4) via fastening structures (92), and wherein preferably the second busbar (7) runs in or through a space (93) defined between the fastening element (9) and the support profile (2) (further preferably between the fastening element (9) and the web portion (10) or its mounting structure (4) or one of its sections (41)), so as to extend, with respect to the interior (3), on the outside and along the support profile (2), preferably along the planar section of the outer side (A) of the support profile (2).

11. The trunking rail (1) according to any one of the preceding claims, wherein the electrical or electronic component is a luminaire (in particular a continuous-row luminaire or a spot luminaire), a control gear, or a sensor (in particular a motion sensor or a light sensor), and / or wherein the electrical or electronic component is electrically coupled to the first and / or second electrical conductors (60, 70) and preferably also mechanically coupled (for example via the retaining structures (54) of the support profile (2)).

12. A trunking system for connecting electrical or electronic components, comprising a plurality of trunking rails (1) according to any one of the preceding claims, which are preferably arranged end-to-end in the longitudinal direction, wherein the first busbars (6) of adjacent trunking rails (1) are electrically coupled to each other and / or the second busbars (7) of adjacent trunking rails (1) are electrically coupled to each other.

13. The trunking system according to claim 12, wherein the support profiles (2) and / or the first busbars (6) and / or the second busbars (7) of adjacent trunking rails (1) are mechanically coupled to each other, wherein preferably the trunking system further comprises a mechanical connector for mechanical coupling, and / or wherein the trunking system further comprises an electrical connector for electrical coupling.

14. The trunking system according to claim 13, further comprising a connecting part, such as a connecting rail, which, if present, comprises at least a portion of the electrical connector and / or the mechanical connector.

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