Device for transmitting power and / or information

Abstract

The invention relates to a device comprising: a support structure and at least one conductor structure provided for transmitting power and / or information and supported by the support structure, the conductor structure having a longitudinal extent and a cross-section oriented perpendicularly to the longitudinal extent, characterized in that the conductor structure is formed by a conductor strip or a conductor foil and in that the cross-section of the conductor strip or the conductor foil has an arcuate shape, wherein, viewed along the cross-section, the conductor strip or the conductor foil is connected, in parts, to the support structure and is freely accessible, in parts, from outside the support structure so as to be contactable there for the transmission of power and / or information.

Description

[0001] title

[0002] Device for power and / or information transmission

[0003] Description

[0004] Technical field

[0005] The invention relates to a device for power and / or information transmission and to a method for producing this device, a shelf rail comprising this device and a tool for producing the device.

[0006] background

[0007] A device for power and / or information transmission is known, for example, from WO2022188955A1. The device comprises a support structure, referred to as a conductor support, and three conductor structures, referred to as conductor tracks, and is implemented as part of a shelf rail for supplying electronic devices, in particular electronic display units. Such devices extend over long lengths, in this case along entire shelves, and are required in large quantities, for example, for all shelves of a store on all shelf levels. The conductor tracks are disclosed in WO2022188955A1 either as a round wire or as a flat conductor track. According to the teaching of WO2022188955A1, flat conductor tracks can be easily implemented as tracks on the support plate, for example, similar to printed circuit boards.

[0008] According to a preferred embodiment of WO2022188955A1, however, the conductor tracks are designed as wires that partially protrude beyond the outer surface of the conductor carrier. In this context, manufacturing advantages and also advantages that arise when contacting with a mentioned device are mentioned. It is further disclosed that wires as conductor tracks have a substantially round cross-section that protrudes raised above the surface of the conductor carrier. This cross-section, unlike a flat cross-section that is substantially flush with the surface of the conductor carrier, allows tactile feedback when inserting the electronic device as soon as one of the contacts of the electronic device touches one of the wires. The user can thus easily determine whether the respective contact of the electronic device has already reached or passed through the conductor carrier.Wires as conductors continue to be convincing due to their robustness compared to flat conductors, for example.

[0009] The conductor track is made of copper, which has correspondingly advantageous electrical conductivity, which is required for power and / or information transmission. However, this also comes with high costs. Due to the high demand, the use of these materials also places a burden on the environment, as the materials must be extracted or recycled using intensive mining and high energy consumption.

[0010] The invention therefore has for its object to provide an improved device, a manufacturing method for such a device, a shelf rail with such a device and a tool for manufacturing said device, which avoids the problems mentioned above.

[0011] Summary of the invention

[0012] This object is achieved by a device according to claim 1. The subject matter of the invention is therefore a device which has: a carrier structure and at least one conductor structure provided for transmitting power and / or information, which is carried by the carrier structure, wherein the conductor structure has a longitudinal extent and a cross-section oriented normal to the longitudinal extent, characterized in that the conductor structure is formed by a conductor strip or a conductor foil and that the shape of the cross section of the conductor strip or the conductor foil has an arc shape, wherein viewed along the cross section the conductor strip or the conductor foil is, on the one hand, connected in regions to the carrier structure and, on the other hand, is freely accessible in regions from outside the carrier structure in order to be contactable there for the transmission of power and / or information.

[0013] This object is further achieved by an electronic shelf rail according to claim 12. The invention therefore relates to an electronic shelf rail comprising a device according to the invention. This object is further achieved by a manufacturing method according to claim 14.The invention therefore relates to a manufacturing method for producing a device, wherein the device has a carrier structure and at least one conductor structure provided for transmitting power and / or information, which is carried by the carrier structure, wherein the conductor structure has a longitudinal extent and a cross-section oriented normal to the longitudinal extent, wherein the manufacturing method comprises the following steps, namely: shaping, in particular reshaping, the conductor structure present as a conductor strip or conductor foil in such a way that an arc shape is created as the shape of the cross section of the conductor strip or conductor foil, and connecting the conductor structure to a carrier structure.

[0014] The object is further achieved by a machine according to claim 16. The invention therefore relates to a machine for producing a device, wherein the device has a carrier structure and at least one conductor structure provided for transmitting power and / or information, which is carried by the carrier structure, wherein the conductor structure has a longitudinal extent and a cross-section oriented normal to the longitudinal extent, wherein the machine has a shaping section which is designed to shape, in particular reshape, the conductor structure present as a conductor strip or conductor foil so that an arc shape is created as the shape of the cross section of the conductor strip or conductor foil, and has a connecting section which is designed to connect the shaped conductor strip or the shaped conductor foil to the carrier structure.

[0015] The measures according to the invention have the advantage of creating a device in which the conductor structure is provided with optimized material requirements, specifically with reduced material requirements, thus drastically reducing environmental impact. This measure therefore enables the provision of a device with an improved ecological balance compared to comparable known devices and at significantly lower costs, precisely because the cost-increasing conductor structure is improved in terms of its properties.

[0016] Life cycle assessment is a method for recording and evaluating environmentally relevant processes. Principles and rules for conducting life cycle assessments were established internationally in ISO standards 14040:2006 and 14044:2006 and incorporated into the German standards (DIN EN ISO 14040, DIN EN ISO 14044). (Source: Federal Environment Agency, Presidential Office / Press and Public Relations, Internet, Wörlitzer Platz 1, 06844 Dessau-Roßlau, Germany; https: / / www.umweltbundesamt.de).

[0017] In contrast to a conductor structure realized by a wire, which has a substantially round, i.e., circular, cross-section, the conductor strip or foil in its unformed, i.e., original state, in which it was unwound from a storage reel, for example, has a substantially rectangular cross-section. The height of the cross-section is relatively small compared to the width of the cross-section because the conductor strip or foil itself is relatively thin. When unrolled, the unprocessed conductor structure therefore has a flat appearance compared to a wire.

[0018] According to the solution, the conductor structure is a relatively slim shape with a small cross-sectional area and therefore a significantly reduced material requirement compared to a round wire, which results in a considerable cost advantage in the manufacture of the device. Although this conductor structure is essentially flat, i.e. a flat conductor strip or a flat conductor foil, viewed along its longitudinal extent and transversely thereto before processing, the curvature of the conductor structure that results during processing, running along the longitudinal extent but extending transversely to the longitudinal extent, i.e. a curved cross-section, allows the conductor structure to be reliably connected to the support structure in certain areas, on the one hand, and the area on the surface of the conductor structure that is accessible for contacting is also present, shaped orcan be structured so that tactile feedback can be obtained when contacting another device, as is the case with the known wire-based solution.

[0019] The present solution thus overcomes the prevailing negative attitude towards a conductor structure formed as a conductor strip or foil (which is flat prior to processing). The change in direction along the cross-section has proven to be the basis for both reliable fastening and free accessibility for contacting. During the manufacturing process, this curved deformation along the longitudinal extent increases rigidity and thus facilitates integration or joining with the support structure.

[0020] The phrase "connected in some areas" and "freely accessible in some areas" can be understood in the present context of the location specification for the property "connected" or "freely accessible" as follows: namely

[0021] - in teaching areas or positions along the course of the cross-section between the lateral edges of the ladder structure, between which the arched profile extends.

[0022] - in one and the same area or at one and the same position along the cross-section between the (lateral) edges of the conductor structure, but on different sides of the conductor structure relative to the support structure, i.e., on an outer side (oriented away from the support structure) or an inner side (oriented toward the support structure) of the conductor structure. >>

[0023] Further, particularly advantageous embodiments and developments of the invention emerge from the dependent claims and the following description.

[0024] In other words, the integration of the conductor strip into the carrier structure can also be described such that at least a first part of the conductor strip is connected to the carrier structure, in particular is encompassed by the carrier structure, and at least a second part of the conductor strip protrudes from the carrier structure and / or protrudes beyond the carrier structure in order to be contactable for the transmission of power and / or information.

[0025] The shape of the support structure is not mandatory, but preferably plate-shaped

[0026] Depending on the application, the support structure may have one, two, three or more conductor structures, which essentially run at a distance from one another and parallel to one another along the longitudinal extent of the support structure.

[0027] The conductor structure is freely accessible on the surface of the support structure, at least in the area intended for contacting. It preferably protrudes from the support structure so that the conductor structure can be contacted by an external contacting element, such as a spring contact or a light guide (or light), of an electronic device. As mentioned, bending the conductor structure imparts high stability even with reduced material usage, thus enabling secure and wear-resistant contact with the contacting element.

[0028] The shape of the cross-section of the conductor structure—in other words, the "profile" of the conductor structure—can have exactly one arc shape or several arc shapes—or, in other words, at least one "arc cross-section" or "arc profile"—perpendicular to the longitudinal extent. This arc shape or these arc shapes are located between two lateral end sections of the conductor structure. These lateral end sections delimit the conductor structure, viewed along its longitudinal extent, to the left and right sides. In a special embodiment, the entire cross-section corresponds to an arc shape.

[0029] The phrase "the shape of the cross-section is arched" means that the ladder structure has two opposing curved surfaces, with these surfaces curved in the same direction. The radii of curvature of two opposing surfaces therefore essentially point in the same direction, for example, both to the left in cross-section, or both to the right in cross-section, or both upwards in cross-section, or both downwards in cross-section. The curved region or arch therefore has an outer wall or outer surface that is curved medially, i.e., towards the median plane, and an outer wall or outer surface that is curved laterally, i.e., away from the median plane.

[0030] The thus formed arc of the conductor structure or the arcs of the conductor structure extend perpendicular to the longitudinal extent or length of the conductor structure between the two end sections of the conductor structure over at least part of the conductor structure, preferably over the entire conductor structure. The conductor structure can have multiple arcs. Preferably, the conductor structure has an odd number of arcs, in particular three arcs. Particularly preferably, the conductor structure has exactly one arc.

[0031] The arch shape is preferably a round arch. However, the arch shape can also be a pointed arch, a turdor arch, or a keel arch. Furthermore, the arch shape can be a gable arch, or the cross-section can be a square arch or a square-curved section.

[0032] The ladder structure, shaped according to the arch, has an inner side that is preferably oriented toward the supporting structure. The inner side corresponds to the side of the arch reveal.

[0033] The conductor structure, shaped according to the arch shape, also has an outer side that is preferably oriented away from the support structure. This outer side corresponds to the side of the arch's spine.

[0034] The arch thus formed in the conductor structure forms a bulge in the material of the conductor structure.

[0035] The arch therefore provides a crown that gives stability to the ladder structure.

[0036] The arched shape of the cross-section can form a fold along the longitudinal extent of the conductor structure. The fold axis thus runs essentially parallel to the longitudinal extent (length) of the conductor structure. Preferably, the fold axis runs parallel to the longitudinal extent of the conductor structure.

[0037] The curved conductor structure thus has a hinge zone in which the curved area or arch can exhibit the previously mentioned arch shapes. This hinge zone transitions into the legs or flanks of the conductor structure.

[0038] The device can be used to supply different entities. For example, the device can be provided to provide power transmission for lighting. For this purpose, the device can be designed to be attached to the ceiling of a room, where the conductor track, in particular two conductor tracks, for which an electrical power supply can be coupled. Thus, lighting devices which have a corresponding contacting element can be attached to the device in order to be supplied with electrical current via this. This allows flexible positioning of the lighting devices and thus adaptive design of the lighting scene in the room. Compared to known lighting track systems, the material requirement is optimized because less material is needed for the conductor structure than for wires or cables.

[0039] As mentioned at the beginning, the device is preferably used in a shelf rail. Therefore, the device is preferably designed for use in a shelf rail. It is therefore designed or shaped in such a way that it can be connected, preferably detachably, to an electronic shelf label and there forms the electrical and / or mechanical interface for electronic devices that are to be attached to the shelf rail. However, it can also be permanently integrated into the shelf rail. Due to the large number of shelf rails required in a store, the material savings add up, so that the use of the device in a shelf rail leads to a huge improvement in the ecological balance. Furthermore, the device enables simple contact, so that the shelf rail is easy to install and electronic devices, such as electronic shelf labels, can be easily installed on the device or the shelf rail.

[0040] For use in the shelf rail, the device can be designed to be mechanically coupled to the shelf rail. For this purpose, the device preferably has a connecting structure. The connecting structure can, for example, be designed to be inserted into a connecting shaft of the shelf rail, so that the device and the shelf rail are coupled to one another. In a particularly preferred embodiment, the device, in particular its connecting structure, is designed such that it is compatible with the shelf rail known from WO2022188955A1 and can thus replace the device (cable carrier) having wires there, without any changes to the rest of the electronic shelf rail being necessary.

[0041] When used in a shelf rail, the device is preferably designed for reversible connection to the shelf rail, particularly via the connecting structure. This feature allows for easy replacement of the device or the shelf rail, for example, if one of them is damaged. This allows the device or the remaining shelf rail to be reused, further saving resources. The device can also be disposed of and recycled separately.

[0042] The device can be designed to guide light. In this case, the conductor structure is made of a light-conducting material, for example, glass or glass fibers, or a plastic such as polycarbonate or polymethyl methacrylate. The support structure is preferably relatively opaque compared to the conductor structure. Such a device for guiding light allows light to be absorbed and emitted at the point of the conductor structure that protrudes from the support structure, with minimal material requirements, so that information can be transmitted in a targeted manner.

[0043] However, the device is preferably provided for transmitting an electrical power and / or information transmission. Therefore, according to a preferred aspect of the invention, the conductor structure is made of an electrically conductive material, preferably of a metal, particularly preferably of a metal comprising copper and / or aluminum, in particular of copper or aluminum.

[0044] It has been shown that even very thin, strip- or foil-like electrically conductive material is supported by the curved shape in such a way that contacts, for example, spring contacts, can be made without any detectable wear on the conductor structure. Tests have shown that copper with the appropriate curvature or curved shape exhibits particularly advantageous mechanical properties. For example, a copper conductor structure according to the invention with a thickness (depth or thickness of the conductor strip or foil) of only 0.07 mm could be contacted several hundred times with a spring element without any wear occurring.

[0045] The use of such curved electrically conductive conductor structures has proven particularly advantageous because it has been discovered that the choice of conductor cross-sections in known conductor structures with circular cross-sections is often based on the mechanical load rather than the electrical load or current load. Due to the improved mechanical load capacity, the measures according to the invention therefore allow the conductor cross-section to be reduced and designed to the actual required electrical load capacity. The conductor cross-section can thus be reduced in such a way that it is designed for the actual requirements in the context of electrical current.

[0046] This has proven particularly advantageous when using the device in a shelf rail, because only very low electrical currents and thus very small cable cross-sections are required to supply the electronic devices on the shelf rail. The device can thus easily replace existing devices with round-section wires—such as those known as conductor carriers from WO2022188955A1—without requiring any modifications to the electronic devices to be connected. The shelf rail equipped with the solution-specific device can directly replace conventional shelf rails with correspondingly material-intensive conductor tracks.

[0047] The conductor structure preferably has a higher conductivity, in particular electrical conductivity, than the support structure. The support structure is particularly preferably designed as an insulator or insulation. This allows several, in particular three, individual "conductor strips" bent transversely to their longitudinal extent to be provided next to one another, in particular parallel to one another at a distance from one another, along the longitudinal extent of the support structure.

[0048] The device with an electrically conductive conductor structure is used to transmit power and / or information between (at least) two entities. One of the entities typically acts as an electrical consumer, while the other acts as a supply device. For this purpose, the supply device can comprise a computer for generating a control signal. However, the supply device can also be configured, for example, to provide a connection to the mains power or it can comprise a power supply unit to provide a corresponding power supply at a desired voltage. The supply device can also comprise or be connected to an energy storage device, in particular a battery or accumulator, for providing the electrical power. In the context of the shelf rail, the supply device can be a shelf rail control device, also known as a "rail controller."Such a shelf rail control unit provides the power and information supply for the devices attached to the shelf rail. The information supply can, for example, include display content for screens attached to the shelf rail.

[0049] Preferably, the electronic shelf rail comprises the device and the shelf rail control device, which is electrically connected to the line structure of the device.

[0050] The device can be located at a distance from a "central wall" of the electronic shelf rail and run essentially parallel to it. The device can also be located directly on the central wall or form the central wall, at least in part, so that, depending on the chosen design, contacting of the conductor structure is possible at different positions on the electronic shelf rail.

[0051] The device can be used to be contactable with (at least) one of the entities, in particular the supply device, via an additional (electrically conductive) connection, for example a connector or a terminal, such as a lamp terminal or spring-loaded terminal. Preferably, the device is designed to contact both entities via the conductor structures, i.e., to electrically connect these two entities to one another.

[0052] The conductor structure can be provided and designed to be contacted by the contacting element, in particular by the spring contact, in a direction normal to the longitudinal extent of the conductor structure and / or in a direction parallel to the longitudinal extent of the conductor structure. "In the direction" here means that the contacting element is moved in this direction relative to the device when contacting. The device can also be designed to be grasped when contacting. In the context of the shelf rail, it has proven particularly advantageous if the device is designed to be coupled to a shelf rail control device, which controls the (oreach of the conductor structure(s) is contacted in a direction parallel to its longitudinal extent and that the device is designed to be coupled to electronic devices, in particular electronic price display units, referred to in technical jargon as ESLs, wherein the electronic devices preferably contact the conductor structure in a direction normal to the longitudinal extent of the conductor structure.

[0053] According to one aspect of the invention, the conductor structure has a longitudinal extent, a width extent, and a thickness extent, wherein the longitudinal extent is greater than the width extent and the thickness extent has the smallest dimension, and wherein the conductor structure is bent such that the two end sections of the width extent are inclined towards one another along the longitudinal extent. The width extent is thus flanked or limited by the two end sections. In the cross-section normal to the longitudinal extent, one or more bends can be present between the end sections, wherein the end sections themselves can be oriented towards or away from one another, i.e., can be inclined or oriented in this way.In any case, it is advantageous that, with optimized material requirements, contacting for power and / or information transmission is possible over long distances, namely along the (essentially entire) length of the conductor structure. Thus, the device can extend along an entire shelf section or an entire shelf and ensure power and / or information transmission at any location.

[0054] Further contacting of the conductor structure can be carried out at the edge using the rail controller mentioned above.

[0055] As mentioned, it has proven advantageous for the conductor structure to be strip-like and / or foil-like and / or formed from at least one foil. The conductor structure is preferably realized using a metal foil or a metal strip, in particular comprising copper. As an alternative to a copper foil or strip, an aluminum foil, a steel foil, a gold foil, tinfoil foil, or a respective strip or a foil or strip made of an alloy can also be used. Such a foil or strip can be produced, for example, by rolling. A foil or strip provides a relatively large area over a long distance with a shallow depth (thickness) and thus with very little material required.This property is used to provide a sufficiently large area for contacting the conductor structure and a sufficiently large area for providing the connection between the conductor structure and the carrier structure by enclosing the conductor structure with minimal material expenditure.

[0056] Preferably, the conductor structure has a depth dimension (thickness) and a width dimension (width), wherein the depth dimension is smaller than the width dimension by at least a factor of 1.5, preferably by a factor of 2, and particularly preferably by a factor of 10. It has been shown that this allows for a particularly favorable balance between mechanical strength and material requirements.

[0057] The conductor structure is therefore preferably designed as a conductor track and has a longitudinal extension that is significantly greater than its width and depth.

[0058] As mentioned, the conductor structure has two lateral end sections, which extend along the conductor structure parallel to its longitudinal extension. Preferably, at least one of the end sections of the conductor structure is encompassed by the support structure. Such a device, in which the end section is encompassed, is particularly easy to manufacture because it can be produced, for example, in a single step together with a casting process or a molding process.

[0059] An extrusion process can be used to manufacture the support structure, thus reducing production effort and thus costs. Because this also requires less space for production, this measure further improves the environmental impact. At the same time, this measure results in a secure and stable mechanical connection between the conductor structure and the support structure, which has cured after extrusion.

[0060] Particularly preferred is for both end sections of the conductor structure to be encompassed by the support structure. This further increases stability while optimizing the ecological balance.

[0061] According to a further aspect of the invention, the arched shape of the conductor structure—that is, where the cross-section has an arched shape—is supported by the support structure. Thus, material of the support structure is located beneath the curve or arched shape. The interior of the arched shape, that is, at the reveal of the arched shape, is contacted and supported by the support structure. This measure leads to an increased load-bearing capacity of the conductor structure. The increased load-bearing capacity thus also allows for further material optimization.

[0062] In general, it has proven advantageous for the arched shape of the conductor structure to protrude from the support structure, i.e., to be curved away from the support structure, or for the arched shape of the conductor structure to protrude into the support structure, i.e., to be curved toward the support structure. In cross-section, the arched shape thus protrudes from the support structure or beyond the surrounding outer contour of the support structure, or into the support structure or into the surrounding contour of the support structure.

[0063] This measure allows the conductor structure to be contacted at the bend (i.e. where the conductor structure has the arch shape) on its outside, i.e. at the arch back, or in the area surrounding the arch back

[0064] The load (force) applied during contacting can be transferred to the legs or flanks of the conductor structure, so that the load is dissipated there. This measure thus enables increased load capacity through targeted load dissipation. At the same time, fault-resistant contacting is ensured.

[0065] Particularly preferably, the conductor structure lined in the bent region protrudes from the support structure with its bent region, allowing contact to be made with the conductor structure there. Thus, any load transferred to the conductor structure by the contact can be absorbed and compensated directly by the lined structure, i.e., by the support structure.

[0066] Preferably, the conductor structure therefore projects with the bent region into the support structure and / or with the bent region out of the support structure. Several bent regions can also be provided, which for example project into and out of the support structure. The conductor structure is at least partially, preferably completely, supported by the support structure on the side thereof, while the opposite side of the conductor structure is accessible for contacting. This measure enables the conductor structure to be contacted by means of a contacting element of the electronic device, so that tactile feedback is received upon contacting as soon as the contacting elements of the device interact with the bend. Contrary to popular belief, a device that provides tactile feedback can therefore be achieved with a planar conductor structure.With this type of tactile feedback, the user feels when contacting the device, for example, using an electronic device with spring contacts as the contacting element, when the contacting element has contacted the conductor track at the desired location. Because the shape of the curved section is largely freely selectable, this can be equivalent to that of a circular conductor structure or even arbitrarily shaped. For example, when making contact, the spring contact can first slide over a first curved area that protrudes from the support structure and then engage another curved area that protrudes into the support structure. This not only achieves equivalent, but even improved tactile feedback compared to known devices.

[0067] The support structure can have a lower stiffness than the conductor structure, or both the support structure and the conductor structure can have a similar or even identical stiffness. This allows for flexible positioning of the device, possibly even in a curved or wavy shape along its length.

[0068] It has proven particularly advantageous that the support structure has a higher rigidity than the conductor structure. This measure enables precise positioning of the device and improved contact with the conductor structure, because it stabilizes the conductor structure in its intended location within the device.

[0069] With increased rigidity of the support structure compared to the conductor structure, the conductor structure is supported more stably and, at the same time, material requirements are further optimized. Therefore, the support structure preferably has a shear stiffness and / or flexural stiffness that is 5 times higher, particularly preferably 10 times higher, and most preferably 100 times higher, than the conductor structure.

[0070] Such increased stiffness can be achieved in particular by dimensioning the conductor structure, i.e. its dimensions and area moments of inertia, taking into account the respective material properties, but can also be influenced by a suitable material selection.

[0071] The support structure is preferably made of a polymer, in particular a plastic.

[0072] The support structure preferably comprises at least one of the following materials: PVC (polyvinyl chloride); PE (polyethylene), in particular HDPE and / or LDPE; PP (polypropylene); PA (polyamide); ABS (acrylonitrile-butadiene-styrene copolymer); PC (polycarbonate); SB (styrene-butadiene); PMMA (polymethyl methacrylate); PUR (polyurethane); PET (polyethylene terephthalate); PSU (polysulfone).

[0073] The support structure can also comprise a biomaterial. In particular, the support structure can comprise at least one of the following materials: thermoplastic starch or starch; CA (cellulose acetate); PLA (polylactic acid); and PHB (polyhydroxybutyric acid).

[0074] The support structure can also be made of a composite material. For example, the support structure can be made of a wood-plastic composite (WPC for short).

[0075] The use of biomaterials and composite materials with biological components have a direct positive impact on the device's environmental footprint. However, the use of polymers also leads to a favorable environmental footprint due to their good recyclability compared to other materials.

[0076] Particularly preferably, the support structure is formed from a single material, preferably molded, particularly preferably cast and / or extruded and / or pressed. This leads to particularly good recyclability.

[0077] Preferably, the carrier structure comprises polypropylene (PP for short), particularly preferably the carrier structure consists of polypropylene.

[0078] According to a further aspect of the invention, the conductor structure is preferably connected to the support structure in a form-fitting manner, in particular in a form-fitting and material-fitting manner. This enables stable fastening of the conductor structure while simultaneously allowing simple and resource-efficient production and using a thin conductor structure.

[0079] Such a positive connection can be achieved, for example, by pouring the material of the support structure, such as a thermoplastic, around the conductor structure, so that the end sections of the conductor structure are enclosed by the liquid material of the support structure. When the material of the support structure solidifies, the end sections of the conductor structure are positively fixed in the support structure. This can also result in a material-to-material bond due to the sticky, molten material of the support structure, so that in addition to the positive connection, a material-to-material bond also fixes the conductor structure to the support structure.

[0080] Furthermore, it has proven advantageous for the device to have a longitudinal extension that is longer, preferably at least by a factor of 2, particularly preferably at least by a factor of 5, than the width of the device. This allows for long-range power and / or information transmission—particularly when used in a shelf rail—with minimal material usage, especially on the side of the conductor structure.

[0081] The longitudinal extension of the device preferably runs correspondingly, particularly preferably parallel, to the longitudinal extension of the conductor structure. The longitudinal extension of the device can be longer than the longitudinal extension of the conductor structure. However, the conductor structure preferably extends substantially along the entire device. The longitudinal extension of the conductor structure thus substantially corresponds to the longitudinal extension of the device and the longitudinal extension of the support structure.

[0082] The width of the device preferably corresponds to the width of the conductor structure.

[0083] Preferably, the device further has a depth extension which is smaller than the longitudinal extension and the width extension.

[0084] The depth extension of the device preferably runs corresponding to the depth extension of the conductor structure.

[0085] The device can have exactly one conductor structure. The device preferably has at least two, in particular electrically conductive, conductor structures. This enables power and / or information transmission to be carried out easily, because a voltage can thus be provided between the two conductor structures. The device particularly preferably has at least three, in particular exactly three, in particular electrically conductive, conductor structures. This further improves power and / or information transmission because, for example, one conductor structure can be used to provide a reference potential, while a further conductor structure provides a power supply, i.e. a corresponding supply voltage, and a further conductor structure provides an information supply, i.e. an information or data signal or a modulated signal. Several conductor structures can also have different information or-Provide data signals relative to the reference potential so that more information can be transmitted per unit of time.

[0086] The conductor structures can be attached to different sides of the support structure.

[0087] The conductor structures can, for example, be attached to two opposite sides of the support structure. This measure allows for a compact design of the device. The same number of conductor structures can be attached to both sides of the support structure, or a different number. The longitudinal extension of the conductor structures preferably runs parallel to one another. The device is preferably designed such that all conductor structures are located on one side of the support structure. This results in a device that is easy to contact, so that a device that is easy to couple can be provided with optimized material requirements.

[0088] Preferably, three correspondingly curved electrically conductive conductor structures are arranged on one side of the support structure. Particularly preferably, the longitudinal extension of the support structures runs parallel to each other. This is particularly advantageous when used in a shelf rail, because it allows power transmission to be carried out separately from information transmission.

[0089] The device can be manufactured using the manufacturing process introduced at the beginning.

[0090] The bend can be produced using common processes, including various tensile and / or compression forming methods. Forming can involve bending processes according to DIN 8580 or deep-drawing processes according to DIN 8584. For example, bending with linear tool movement, such as free bending, die bending, sliding draw bending, roll bending, or flexural bending, or bending with rotating tool movement, such as roll bending or swivel bending, can produce the bend. The bend can also be produced by flanging or edging.

[0091] Rolling, extrusion and / or impact forming are preferred processes for forming.

[0092] The conductor structure is preferably formed by being continuously guided through a forming device, in particular by being pulled and / or pushed. This allows for continuous or quasi-continuous forming of long lengths of the conductor structure. For example, the conductor structure can be present before the forming device in the form of a film-like or strip-like electrically conductive material, in particular as a metal foil, preferably as a copper foil, rolled up on a roll. If this essentially flat or planar initial version of the conductor structure is guided through the forming device, the conductor structure is formed therein so that the conductor structure is shaped into the arc shape. The entire roll can thus be formed without interruption. A roller can be used for forming. The conductor structure is preferably formed by being guided through a forming die with the appropriate shape.The forming die preferably has a changing cross-section, so that on the input side, it has the shape of the cross-section of the conductor structure in its initial state, i.e., preferably rectangular, or a shape to accommodate the shape of the conductor structure. On the output side, the forming die preferably has a cross-section essentially the desired arc shape. Depending on the material and dimensions of the conductor structure, a certain amount of over-forming may be advantageous, so that the desired deformation is achieved after the elastic deformation has been restored.

[0093] The tool preferably comprises the forming device, in particular comprising the forming die.

[0094] Different methods can be used to connect the conductor structure to the support structure. For example, the support structure can be manufactured in a suitable shape, and the conductor structure can be glued to the support structure and / or inserted into a corresponding opening, particularly into slots, in the conductor structure. Furthermore, the conductor structure can be connected to the support structure by pressing and pressing. The conductor structure can, for example, be nailed, riveted, or screwed to the support structure.

[0095] It has proven particularly advantageous to connect the conductor structure to the carrier structure during a manufacturing step of the carrier structure. This increases production efficiency and provides a particularly stable connection. Preferably, at least a portion of the material of the carrier structure is brought into contact with the conductor structure in a liquid and / or viscous state.

[0096] For example, the bent conductor structure(s) can be placed in a casting mold, after which the liquid or viscous material of the support structure is poured over it. The bent area of ​​the conductor structure can rest flat on the casting mold in corresponding recesses so that the end sections protrude into the area to be poured. If the liquid or viscous material of the support structure is poured onto the conductor structure, the end sections are encompassed by the material so that after hardening a form-fitting and possibly material-fitting connection is created. It has proven particularly advantageous if the connection of the conductor structure to the support structure takes place continuously over the length of the support structure. This means that a longitudinal section of the conductor structure is connected to the conductor structure in a continuous process.After connecting the longitudinal section, the next longitudinal section is connected to the conductor structure, creating a continuous process.

[0097] Particularly preferably, the conductor structure is connected to the carrier structure in a manufacturing step of the carrier structure in a continuous process, in particular in an extrusion process step.

[0098] The manufacturing method is preferably carried out in such a way that the joining comprises the following process steps: forming the carrier structure in an extrusion process or extrusion process step, and joining the formed conductor structure with the still liquid or viscous carrier structure in such a way that the conductor strip or the conductor foil is, on the one hand, partially connected to the carrier structure and, on the other hand, is partially freely accessible from outside the carrier structure, and curing the carrier structure in combination with the conductor structure.

[0099] This manufacturing method is provided on the machine introduced at the beginning, wherein the connection section comprises: an extrusion section which is designed to form the carrier structure in an extrusion process or extrusion process step, and a joining section which is designed to join the formed conductor structure to the still liquid or viscous carrier structure in such a way that the conductor strip or the conductor foil is, on the one hand, partially connected to the carrier structure and, on the other hand, is partially freely accessible from outside the carrier structure, and a curing section which is designed to cure the carrier structure.

[0100] It is particularly preferred if the shaping section, the extrusion section and the joining function are combined in a combination tool. The combination tool is a modified extruder with downstream cooling, to which the plastic granulate for producing the support structure is fed from above, to which - e.g. from the left - the conductor structure is fed, which is deformed in the extruder transversely to its longitudinal extent so that its cross-section has an arc shape, and in which, before the solidifying support structure leaves the extruder, the formed conductor structure is joined to the still liquid or viscous mass of the support structure. The support structure joined to the formed conductor structure leaves the extruder and is cooled in a water bath, whereby the mass of the support structure solidifies and a permanent bond is created with the conductor structure.The process of feeding the conductor structure, feeding the granulate, extruding the carrier structure, assembling the conductor structure with the carrier structure and the subsequent cooling takes place continuously.

[0101] The conductor structure is fed into the combination tool on the input side. For this purpose, a storage reel can be provided, for example, from which the conductor structure is unwound according to the feed rate required by the combination tool. On the output side of the combination tool, after the extruded support structure has cooled and solidified, the solidified support structure is separated into segments of defined lengths, as required for the intended purpose. In particular, the length is cut to the length of the shelf rail into which the device is inserted as a conductor support.

[0102] The device is therefore preferably a device which is obtainable by a method which has the following steps, namely: forming, in particular reshaping, a conductor structure present as a conductor strip or conductor foil, so that the arc shape is created as the shape of the cross section of the conductor strip or conductor foil, and connecting the conductor strip or conductor foil to a carrier structure in an extrusion process or extrusion process step.

[0103] According to the method used, the method comprises the following steps, namely: forming the carrier structure in an extrusion process or extrusion process step, and joining the formed conductor structure to the still liquid or viscous carrier structure in such a way that the conductor strip or conductor foil is, on the one hand, partially connected to the carrier structure and, on the other hand, partially freely accessible from outside the carrier structure, and curing the carrier structure in combination with the conductor structure.

[0104] During the extrusion process step, the bent conductor structure can be guided through a corresponding opening into an extruder or a forming chamber located downstream of the extruder, similar to the casting mold. The liquid or viscous material of the carrier structure is then poured or pressed onto the conductor structure, which preferably does not become liquid or viscous. The carrier structure, together with the conductor structure, is then moved through an extruder die so that, after the device has cooled, the conductor structure is embedded in the carrier structure. The opening in the forming chamber for introducing the conductor structure has approximately the same shape as the bent conductor structure. It can also be the opening of the forming die.In the forming chamber, the conductor structure is guided through a support structure, for example, a correspondingly shaped recess in a wall element of the forming chamber. The support structure prevents the conductor structure from being undermined by liquid material and removed from its desired position. The extruder feeds the liquid or viscous material of the carrier structure, particularly from above, into the forming chamber. On the side opposite the opening, the forming chamber has the extruder die, through which the carrier structure with the embedded conductor structure is then extruded. Once the carrier structure has hardened, a positive and, if necessary, material-to-material connection is formed.

[0105] Preferably, the two steps—forming the conductor structure and connecting the conductor structure to a support structure—are carried out continuously. In particular, the two previously specified steps—forming the sheet using a forming die and connecting the conductor structure to the support structure—are carried out in a single extrusion process step. Preferably, several conductor carriers, in particular three conductor carriers, are connected to the support structure simultaneously.

[0106] The tool preferably comprises the shaping chamber, in particular comprising the extruder die.

[0107] It should be noted that the conductor structure can have a constant cross-section along its longitudinal extent or a cross-section that varies along its length. The former results in a particularly stable and resilient conductor structure, particularly under tensile loads. The latter results in a conductor structure that can be embedded particularly stably in the conductor structure by bonding it to a liquid or viscous material. These and other aspects of the invention are evident from the figures discussed below.

[0108] Short character description

[0109] The invention is explained in more detail below with reference to the accompanying figures using exemplary embodiments, to which, however, the invention is not limited. In the various figures, identical components are provided with identical reference numerals. They show schematically:

[0110] Fig. 1 shows a conductor structure for a device for providing power and / or information transmission;

[0111] Fig. 2A shows the device for providing power and / or information transmission;

[0112] Fig. 2B is a sectional view of the device;

[0113] Fig. 3A - 3C the device providing a power and / or information transmission to an electronic price label on a shelf rail;

[0114] Fig. 4A - 43 further embodiments of the device;

[0115] Fig. 5 a machine for manufacturing the device;

[0116] Fig. 6A - 6F Cross sections of the elements of the device at different stages of device manufacture.

[0117] Fig. 7 a forming die of the machine for forming the conductor structure.

[0118] Description of the embodiments

[0119] Figure 1 shows the cross section of a conductor structure 2 of a device 1 shown in Figures 2A and 2B (in a bent state in cross section normal to the longitudinal extent L (length) of the conductor structure 2). The conductor structure 2 is intended for connection to a carrier structure 3 (see Figures 2A and 2B). The conductor structure 2 is designed here as a copper strip.

[0120] As Figure 1 shows, the conductor structure 2 has the shape of an arch 4 in its cross section, i.e., an arched shape 4, so that the conductor structure 2 has a curved section. The arch 4 thus forms a hinge zone 5 in which the conductor structure 2 bends. This arched shape 4 extends over the entire longitudinal extent L of the conductor structure 2, so that it forms a fold. The hinge zone 5 merges into legs or flanks 6, each of which terminates at the end sections 7 of the conductor structure 2.

[0121] The conductor structure has a depth extension T (thickness) that is normal to the longitudinal extension L.

[0122] Furthermore, the conductor structure 2 has a width dimension (width) of the material, which is composed of the lengths B1 and B2 of the legs or flanks 6 and the length B3 of the hinge zone 5. The width dimension of the material approximately corresponds to the width dimension of the conductor structure 2 in the unbent state, although certain differences may occur due to compression and expansion during deformation. Furthermore, the conductor structure 2 has a width dimension B in the bent state.

[0123] The conductor structure 2 shown here is not drawn to scale to better illustrate the individual areas. According to a preferred embodiment, the conductor structure 2 has, for example, the following dimensions: A depth T of approximately 0.03 mm. A width dimension of the material B1 + B2 + B3 of approximately 8 mm. Any length dimension L, with several meters also possible.

[0124] Figure 2A shows the device 1 with three conductor structures 2 embedded in the support structure 3, with a view of the respective curved areas, i.e., the hinge zone 5 of the conductor structures 2. The conductor structures 2 protrude from the support structure 3 for contacting. On the left, the device 1 is shown shortened by a broken edge. Figure 2A shows a section line AA.

[0125] Figure 2B shows the device 1 sectioned along section line AA. The legs or flanks 6 and the end sections 7 are essentially located within the support structure 3 or encompassed by it.

[0126] Figure 3A shows the device 1, adapted for use in an electronic shelf rail 8 for supplying an electronic price label, which is referred to in technical jargon as an Electronic Shelf Label, or ESL 11 for short. For this purpose, the device 1 has a connecting structure 9 that is plugged into a connecting shaft 10 of the shelf rail 8. The conductor structures 4 are thus located at a predetermined position in the shelf rail 8. The shelf rail 8 is designed such that the conductor structure 4 protrudes into the shelf rail 8, specifically into a shaft provided in the shelf rail for receiving the ESL 11. These are thus particularly well protected against external influences. The ESL 11 has (in this case three) spring contacts 12 for contacting the conductor structures 2.

[0127] The conductor structures 2 are contacted by a supply device configured as a shelf rail control device 14 (also referred to as a rail controller), as also indicated in Figure 3C. The shelf rail control device 14 terminates the shelf rail laterally at one of its two ends and contacts the three conductor structures 2 there. The supply device or the shelf rail control device 14 provides a reference potential via the first conductor structure 2, a supply voltage relative to the reference potential via the second conductor structure 2, and an information signal for the ESLs 11 via the third conductor structure 2. The shelf rail 8, or specifically the device 1, thus provides the connection between the supply device and the ESL 11 in order to supply the ESL 11 with electrical power and information.

[0128] Figure 3B shows the ESL 11 coupled to the shelf rail 8, with each of the three spring contacts 12 contacting exactly one of the three conductor structures 2.

[0129] Figure 3C shows the shelf rail 8, shown in section, in its end region, where it is coupled to the shelf rail control unit 14. For this purpose, the shelf rail control unit 14 has three spring contacts 15, each of which contacts the conductor structures 2 of the device 1 in the direction of their longitudinal extent. For this purpose, the spring contacts 15 are double-bent, so that they each have a first section 15A, which is fastened to a base structure 16 of the shelf rail control unit 14, a second section 15B, which extends normal to the first section 15A from the base structure 16 to the conductor structure 2, and a third section 15C, which extends normal to the second section 15C, here into the image plane. The third section 15C thus runs parallel to the respective conductor structure 2 and conforms to it in order to provide contact over a large area.

[0130] The shelf rail control unit 14 is connected to a power source and, as mentioned, provides a reference potential, a power supply and an information signal so that the ESL 11 is supplied with power and information via the device 1.

[0131] Figures 4A to 4J show further embodiments of the device 1. In these views, the devices 1 are each shown without a connecting structure 9, but may also have one depending on the application. Devices 1 with two conductor structures 2 are also shown here. However, the number of conductor structures 2 can be freely selected depending on requirements. For example, three conductor structures 2 or a single conductor structure 2 can be provided in the device 1.

[0132] Figure 4A shows an embodiment of the device 1, wherein an end section 7 of the conductor structure 7 is encompassed by the support structure 3. The section of the conductor structure 7 with the arc shape 4 lies partially outside the support structure 3. One end section 7 lies outside the support structure and can be contacted, for example, by means of spring contacts 12 or 15.

[0133] Figure 4B shows an embodiment of the device 1, wherein both end sections 7 of the conductor structure 2 encompass the support structure 3. The conductor structure 2 is firmly bonded to the support structure 3 by means of an adhesive. The conductor structure 2 can be contacted between the two end sections 7 by means of spring contacts 12 and 15, respectively. This provides a relatively large contact area.

[0134] Figure 4C shows an embodiment of the device 1, wherein both end sections 7 of the conductor structure 2 are encompassed by the support structure 3. Each conductor structure 2 has two sections with an arcuate shape 4, so that an area 17 is created between the two sections, which can be contacted by the spring contacts 12 and 15, respectively. The two arcuate shapes 4 thus create an area 17 which, due to its size, is easy to contact while simultaneously having good mechanical strength.

[0135] Figure 4D shows an embodiment of the device 1, wherein both end sections 7 of the conductor structure 2 are encompassed by the support structure 3. The conductor structure 2 has two curved sections 4 in its cross-section, which are located inside the support structure 3 to further increase the strength of the connection between the conductor structure 2 and the support structure 3.

[0136] Figure 4E shows an embodiment of the device 1, wherein both end sections 7 of the conductor structure 2 are encompassed by the support structure 3. The conductor structure 2 has a plurality of arched shapes 4 in cross-section in order to provide a particularly strong connection between the conductor structure 2 and the support structure 3.

[0137] Figure 4F shows an embodiment of the device 1, wherein both end sections 7 of the conductor structure 2 are encompassed by the support structure 3, and wherein the end sections 7 are inclined relative to each other such that they form an acute-angled triangle. This results in a space-saving, positive connection between the conductor structure 2 and the support structure 3, so that the conductor structures 2 can be arranged compactly next to one another.

[0138] Figure 4G shows an embodiment of the device 1, wherein, similar to Figure 4B, both end sections 7 of the conductor structure 2 encompass the support structure 3. Here, too, the conductor structure 2 is firmly bonded to the support structure 3, for example, by means of adhesive. The conductor structure 2 can be contacted between the two end sections 7 by means of spring contacts 12 and 15, respectively. In contrast to Figure 4B, the support structure 3 has a shape adapted to the curved shape 4 of the conductor structure, so that the conductor structures 2 protrude from the support structure 3.

[0139] Figure 4H shows an embodiment of the device 1, wherein each end section 7 of the conductor structure 7 is encompassed by the support structure 3. In order to reinforce the connection between the conductor structure 2 and the support structure 3, the conductor structure 2 has recesses 13 so that these are filled by the support structure 3. It should be noted that these recesses 13 can also be used with the other embodiments mentioned, in particular with those embodiments in which at least a portion of the conductor structure 2 is encompassed by the support structure 3, in order to reinforce the connection between the conductor structure 2 and the support structure 3. In addition to holes, notches, indentations, etc. can also be used as recesses 13.

[0140] Figure 41 shows an embodiment of the device 1, wherein the conductor structure 2 has an arc shape, the outer side of which, i.e., the back of the arc, protrudes toward the support structure 3 and is connected to it in a material-to-material manner, in this case by means of adhesive bonding. This allows spring contacts 12 and 15 to be precisely positioned during contacting, so that the largest possible area is utilized during contacting.

[0141] Figure 43 shows an embodiment of the device 1, wherein the conductor structure 2 each has an arc shape, the outer side of which, i.e. its arcuate back, projects towards the support structure 3 and is in contact with it. Furthermore, each conductor structure 2 is bent such that the end sections 7 of the conductor structure 2 project into the support structure 3 and are encompassed by it. This enables precise contacting of the conductor structure 2 by means of the spring contacts 12 or 15. At the same time, a stable connection is provided that can withstand even high loads. Due to the shape of the conductor structure 2, no sharp edges arise when contacting the spring contacts 12 or 15, which must be overcome by the spring contacts 12 or 15, so that the load on the conductor structure 2 remains low. The conductor structure 2 can therefore be designed to be very thin, which optimizes the material requirements.

[0142] Figure 5 shows a machine 18 for producing the device 1. The machine 18 has a conductor structure provision section 19 for providing and arranging the conductor structure 2. The conductor structure provision section 19 has three storage rolls 25 on which the conductor structures 2 are wound as conductor strips 2 or conductor foils 2. The storage rolls 25 are driven by electric motors (not shown) so that the conductor structures 2 can be unrolled from the storage rolls 25 in a targeted manner, in particular synchronously with the subsequent processing steps. Furthermore, the conductor structure provision section 19 can have a conductor structure positioning section 19A designed as a roller arrangement in order to arrange the conductor structures 2 at a desired distance from one another and in the desired orientation and to control or regulate the mechanical tension of the conductor structures 2.For this purpose, the conductor structure positioning section 19A has fixed rollers 19B, which are located at a variable but fixed position. Furthermore, the conductor structure positioning section 19A has spring-loaded rollers 19C to compensate for the mechanical tension.

[0143] Furthermore, the machine 18 has a forming section 20 designed to form the conductor structure 2, which is present as a conductor strip or conductor foil. The forming section 20 has a forming die 26 having an upper forming part 27 and a lower forming part 28, which are shaped such that a channel 29 is formed between them for each conductor structure 2. The channel 29 is slightly larger on the input side, i.e., on the side (the input side 30) where the conductor structure 2 is inserted, than the conductor structure 2 in its original form and is rounded. Towards the exit side 31 of the forming die 26, the shape of the path changes substantially from the flat shape to a curved shape, which defines the desired arc shape 4 of the conductor structure, so that the conductor structure 2 which is guided through the forming die 26 has the desired arc shape when leaving (or after leaving) the forming die 26.

[0144] The machine 18 further comprises a connection section 21, which is designed to connect the formed conductor structure 2 to the carrier structure 3. The connection section 21 comprises an extrusion section 22, which is designed to form the carrier structure 3 in an extrusion process, and an assembly section 23, which is designed to join the formed conductor structure 2 to the still liquid or viscous carrier structure 3 in such a way that the conductor strip 2 or the conductor foil 2 is, on the one hand, partially connected to the carrier structure 3 and, on the other hand, partially accessible from outside the carrier structure 3. And a curing section 24, which is designed to cure the carrier structure 3.

[0145] The extrusion section 22 has an extruder 32 and a shaping chamber 33. The extruder 32 is designed here as a screw extruder and is designed to heat a plastic granulate that forms the starting material for the support structure 3, convert it into a liquid or viscous state, and press it into the shaping chamber 33. The shaping chamber 33 has guide grooves 35 for guiding the formed conductor structures 2, so that they are guided stably without the liquid or viscous material of the support structure 3' flooding the area of ​​the conductor structure 2 intended for contacting. The shaping chamber 33 has an extruder die 34 through which the conductor structure 2, connected to the possibly still viscous support structure 3', can be passed in such a way that the device 1 has the desired shape after leaving the extruder die 34.The curing section 24 downstream of the extruder section 22 has a cooling section designed as a water bath 25.

[0146] After the curing section 24, the device 1 is thus ready as a strand. Depending on the rigidity of the device 1, this strand can be wound onto a roll and / or cut into desired lengths.

[0147] It should be noted that several drives, in particular drive rollers, can be provided both at the end and in between in order to regulate the respective tension and / or the feed of the conductor structure 2 or the device 1.

[0148] The forming section 20 and the extrusion section 22 form a combination tool. For this purpose, the forming section 20 and the extrusion section 22 can be configured such that the forming section 20 merges directly into the extrusion section 22, in particular such that the forming die 26 merges directly into the forming chamber 33 or is even housed within the forming chamber 33.

[0149] The machine 18 thus allows the device 1 to be manufactured in a material-saving manner, wherein the three conductor structures 2 are unrolled from the storage rolls 25 and aligned by the conductor structure positioning section 19A, as can be seen in Figure 6A, which shows the sectional view along section AA.

[0150] As can be seen in Figure 6B in combination with Figure 5, the conductor structures 2 are then pulled and / or pressed through the channels 29 of the forming die 26, where they approach their desired shape, as can be seen in Figure 6C.

[0151] As can be seen in Figure 6D in combination with Figure 5, the conductor structures 2 have the desired arc shape 4 after leaving the forming die 26 and thus the shaping section 20, wherein in this embodiment, the arc shape 4 is a semicircular arc shape 4. The conductor structure 2 is then conveyed into the connection section 21, where the conductor structure 2 is connected to the still liquid or viscous extruded carrier structure 3'.

[0152] Figure 6E in combination with Figure 5 shows the conductor structure 2, which is enclosed by the still viscous support structure 3' at its end sections 7. The conductor structure 2 and the support structure 3' are located in the shaping chamber 33 and are pressed through the extruder die 34, on the one hand by pulling and / or pushing the conductor structure 2 and, on the other hand, by advancing the material of the support structure 3' through the extruder 32, whereby the support structure 3' takes on the desired shape. The support structure 3 is then cooled in a water bath 35 so that its shape is solidified and the conductor structure 2 is firmly connected to the support structure 3.

[0153] Figure 6F shows the device 1 after leaving the machine 18. The device 1 can now be cut or trimmed to the desired length. For this purpose, the machine 18 can also have a cutting device (e.g., designed as a saw or laser, etc.).

[0154] The device 1 shown here does not have a connecting structure 9 for the sake of simplicity. To produce such a connecting structure 9 as a component of the support structure 3, only a corresponding shape of the extruder die 34 needs to be selected.

[0155] Figure 7 shows another embodiment of the forming die 26 of the forming section 20. The conductor structure 2 is received at the input side 30, whereby, a few centimeters before the input side 30, it has already been forced from its original straight, flat cross-sectional shape into a slightly curved shape by the constraining forces of the forming die 26. Along the channel 29, the conductor structure 2 is further bent into the curved shape 4.

[0156] In general, it should be noted that it has proven advantageous if the forming die 26, specifically the grooves 29 of the forming die 26, has a polished surface. This enables low-wear forming of the conductor structure 2, even with very thin material thicknesses of the conductor structure 2, so that a stable device 1 can be produced with optimized material requirements.

[0157] Finally, it should be noted once again that the figures described in detail above are merely exemplary embodiments that can be modified in a variety of ways by those skilled in the art without departing from the scope of the invention. For the sake of completeness, it should also be noted that the use of the indefinite articles "a" or "an" does not exclude the possibility that the relevant features may be present multiple times.

Claims

Claims 1. Device (1) comprising: - a carrier structure (3) and at least one conductor structure (2) provided for transmitting power and / or information, which is carried by the carrier structure (3), wherein the conductor structure (2) has a longitudinal extent (L) and a cross-section oriented normally to the longitudinal extent (L), characterized in that the conductor structure (2) is formed by a conductor strip or a conductor foil, and in that the shape of the cross-section of the conductor strip or the conductor foil has an arc shape (4), wherein, viewed along the cross-section, the conductor strip or the conductor foil is, on the one hand, partially connected to the carrier structure (3) and, on the other hand, partially freely accessible from outside the carrier structure (3) in order to be contactable there for the transmission of power and / or information.

2. Device (1) according to claim 1, wherein the conductor structure (2) is made of an electrically conductive material, preferably of a metal, particularly preferably of a metal comprising copper, in particular of copper.

3. Device (1) according to one of the preceding claims, wherein the conductor structure (2) is delimited by two lateral end sections (7), which end sections (7) run along the conductor structure (2) parallel to its longitudinal extent (L), and wherein at least one of the end sections (7) of the conductor structure (2) is encompassed by the support structure (3).

4. Device (1) according to claim 3, wherein both end sections (7), in particular both end sections (7) in cross section normal to the longitudinal extent (L), of the conductor structure (2) are encompassed by the support structure (3).

5. Device (1) according to one of the preceding claims, wherein the arched shape (4) of the conductor structure (2) is supported by the support structure (3).

6. Device (1) according to one of the preceding claims, wherein the arc shape (4) of the conductor structure (2) protrudes from the support structure (3) or the arc shape (4) of the conductor structure (2) protrudes into the support structure (3).

7. Device (1) according to one of the preceding claims, wherein the support structure (3) has a higher rigidity than the conductor structure (2).

8. Device (1) according to one of the preceding claims, wherein the conductor structure (2) is connected to the support structure (3) in a form-fitting manner, in particular in a form-fitting and material-fitting manner.

9. Device (1) according to one of the preceding claims, wherein the device (1) has a longitudinal extent which is longer, preferably at least by a factor of 2, particularly preferably at least by a factor of 5, than a width extent of the device (1).

10. Device (1) according to one of the preceding claims, wherein the device (1) is obtainable by a method comprising the following steps, namely: - forming, in particular reshaping, a conductor structure (2) present as a conductor strip or conductor foil, so that the arched shape (4) is created as the shape of the cross section of the conductor strip or conductor foil, and - connecting the conductor strip or the conductor foil to a carrier structure (3) in an extrusion process or extrusion process step.

11. Device (1) according to claim 10, wherein according to the method used, the connecting comprises the following steps, namely: - forming the support structure (3) in an extrusion process or extrusion process step, and - joining the formed conductor structure (2) to the still liquid or viscous carrier structure (3) in such a way that the conductor strip or the conductor foil is, on the one hand, partially connected to the carrier structure (3) and, on the other hand, partially freely accessible from outside the carrier structure (3), and - curing of the carrier structure (3) in combination with the conductor structure (2).

12. Electronic shelf rail (8) comprising a device (1) according to one of the preceding claims 1 to 11.

13. Electronic shelf rail (8) according to claim 12, which has a shelf rail control device (14) which is electrically connected to the line structure (2) of the device (1).

14. A manufacturing method for manufacturing a device, wherein the device (1) comprises a support structure (3) and at least one conductor structure (2) provided for transmitting power and / or information, which is carried by the support structure (3), wherein the conductor structure (2) has a longitudinal extent (L) and a cross-section oriented normal to the longitudinal extent (L), wherein the manufacturing method comprises the following steps, namely: - forming, in particular reshaping, the conductor structure (2) present as a conductor strip or conductor foil in such a way that an arc shape (4) is created as the shape of the cross section of the conductor strip or conductor foil, and - connecting the conductor structure (2) to a support structure (3).

15. Manufacturing method according to claim 14, wherein the bonding comprises the following process steps: - forming the support structure (3) in an extrusion process or extrusion process step, and - joining the formed conductor structure (2) to the still liquid or viscous carrier structure (3) in such a way that the conductor strip or the conductor foil is, on the one hand, partially connected to the carrier structure (3) and, on the other hand, partially freely accessible from outside the carrier structure (3) is, and - Curing of the carrier structure (3) in combination with the conductor structure (2).

16. Machine (18) for producing a device (1), wherein the device (1) has a support structure (3) and at least one conductor structure (2) provided for transmitting power and / or information, which is carried by the support structure (3), wherein the conductor structure (2) has a longitudinal extent (L) and a cross-section oriented normal to the longitudinal extent (L), wherein the machine (18) - a shaping section (20) which is designed for shaping, in particular reshaping, the conductor structure (2) present as a conductor strip or conductor foil, so that an arc shape (4) is created as the shape of the cross section of the conductor strip or conductor foil, and - a connection section (21) which is designed to connect the shaped conductor strip or the shaped conductor foil to the carrier structure (3).

17. Machine (18) according to claim 16, wherein the connection section (21) comprises: - an extrusion section (22) designed to form the support structure (3) in an extrusion process step, and - a joining section (23) which is designed to join the shaped conductor structure (2) to the still liquid or viscous carrier structure (3) in such a way that the conductor strip or the conductor foil is, on the one hand, partially connected to the carrier structure (3) and, on the other hand, partially freely accessible from outside the carrier structure (3), and - a curing section (24) designed to cure the support structure (3).

18. Machine (18) according to claim 15, wherein the forming section (20), the extrusion section (22) and the joining section (21) are combined in a combination tool.

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