Retaining element

Abstract

The invention relates to a retaining element for use in a roof or facade structure, in particular for reducing the total number of retaining elements required for construction, having a head portion (1) for engaging in a metal construction sheet, a foot portion (2) for fastening to a carrier structure and a connection portion (3) connecting the head portion (1) and the foot portion (2). An outer plastic material is provided for suppressing potentially disruptive sound development which can be caused by metal parts sliding over each other, and for ensuring thermal insulation, while a reinforcing core (10) with a single-piece central part (13) is provided for particularly good resistance to tensile forces. End pieces (11, 12) of the reinforcing core are designed for particularly good flexural strength of the retaining element.

Description

[0001] Holding element

[0002] The invention relates to a holding element, in particular for use in a roof or facade construction.

[0003] Such a retaining element can be used in particular for structural metal sheets, for example, for roofs or facades. It is common for a head section of the retaining element to engage with suitably shaped ribs of one or two structural metal sheets, and a base section to be attached to a supporting structure with fasteners such as screws. The retaining element must be sufficiently strong or stable to withstand forces occurring, such as compressive forces caused by wind, perpendicular to the vertical direction of the retaining element. Therefore, such retaining elements are traditionally often made of metal.

[0004] In principle, retaining elements for use in roof structures are already known. WO 2004 / 022877 A shows one such example of a retaining element.

[0005] It is therefore the object of the present invention to provide a retaining element that is inexpensive and easy to manufacture. If possible, it is also desirable to provide a retaining element that offers greater stability, particularly against tensile forces.

[0006] This object is achieved with a retaining element according to claim 1. Further features, advantages, and embodiments emerge from the dependent claims, the description, and the figures. According to the invention, a retaining element is provided, particularly for use in a roof or facade construction.The holding element comprises a head section, a foot section and a connecting section, wherein the connecting section extends along a connecting direction from the head section to the foot section, wherein the holding element comprises a reinforcing core and an outer plastic material surrounding the reinforcing core, wherein the reinforcing core comprises a central part extending through the connecting section, a first end part arranged in the head section and a second end part arranged in the foot section, wherein the central part is formed in one piece, wherein the first end part and the second end part each adjoin the central part and each extend beyond the central part in a positive and negative lateral direction perpendicular to the connecting direction.

[0007] The holding element according to the invention has the advantage, due to the one-piece design of the middle part, that it can be manufactured more easily, in particular because multiple parts do not have to be provided for the middle part. The use of an outer plastic material has the advantage that potentially annoying noise development, which can be caused by metal parts sliding over one another, can be prevented or at least reduced. The one-piece design of the middle part can, if necessary, further enhance this noise-preventing effect. Furthermore, the use of the outer plastic material can serve for thermal insulation, in particular by preventing thermal bridges, because the reinforcement core can be insulated from its surroundings by the plastic material. In addition, the outer plastic material allows corrosion protection of the reinforcement core.The plastic material can be, for example, a thermoplastic material such as polyamide or a thermosetting material. The plastic material can, for example, be molded around the reinforcement core using an injection molding process. The reinforcement core combines the advantages of the outer plastic material with good stability, particularly resistance to tensile forces. Tensile forces can occur, in particular, in a direction parallel to the connection direction. For example, a roof or a roof structure secured by the retaining element or several retaining elements can, due to wind,

[0008] Roof sheeting is subjected to an upward tensile force. The reinforcement core can preferably be made of metal, in particular steel, titanium, aluminum, or an alloy thereof. Alternatively, the reinforcement core can be made of a non-metallic material, e.g., a fiber-reinforced material such as a carbon or fiberglass composite.

[0009] The roof or facade structure can preferably comprise building sheets. The head section can be designed to engage with one or more shaped building sheets, in particular with shaped ribs of the building sheets. Advantageously, the head section is reinforced by the first end section of the reinforcement core. By having the first end section extend laterally beyond the central section, increased stability against tensile forces can be achieved when the head section engages with the building sheets because the head section is reinforced by the first end section. Extending laterally beyond the central section means, in particular, that the first end section (in the lateral direction) is wider than the central section. The foot section is preferably designed for connection to a supporting structure.For example, the foot section can comprise holes, in particular screw holes, which are designed so that the foot section can be fastened to a supporting structure using fastening means, in particular screws. The foot section is advantageously reinforced by the second end part. The second end part can also comprise holes which correspond to the holes in the entire foot section. In particular, the holes can extend both through the plastic material and through the second end part. The holes in the second end part can preferably be made, for example punched, before the plastic material is added. This has the advantage over punching after the plastic material has been added that the plastic material also covers the interior of the holes. This can, for example, achieve better corrosion resistance.The connecting section, which connects the head section and the foot section, is provided between the head section and the foot section. The connection direction can be defined by the connection between the head section and the foot section. The connection direction is preferably provided such that it is aligned substantially vertically when the holding element is used or installed for or in a roof structure. In addition to the connection direction, a lateral direction perpendicular to the connection direction and a longitudinal direction perpendicular to the connection direction and the lateral direction are defined. In the context of this invention, a positive connection direction is the direction from the head section to the foot section. Correspondingly, a negative connection direction is the direction from the foot section to the head section. The positive and negative lateral directions are correspondingly two antiparallel, i.e. opposite, directions.The first end part and the second end part each adjoin the middle part. Connection can preferably be understood to mean that the end parts are connected to the middle part, in particular are connected in a form-fitting manner. One or both end parts can also adjoin the middle part by being manufactured in one piece with the middle part. The middle part can have one or more core holes. The core holes can in particular be a bore in the lateral direction. The core holes can have the advantage of enabling better connection and support of the plastic material and the reinforcement core, because the plastic material can thus also reach the core holes in the middle part of the reinforcement core during production. This can stabilize the connection of the holding element.

[0010] The central part preferably has a smaller extension in the lateral direction, preferably by at least a factor of 4, than in the connecting direction and in a longitudinal direction, wherein the longitudinal direction extends perpendicular to the connecting direction and the lateral direction. The central part can be essentially flat. “Essentially flat” can be understood to mean that the central part is flat approximately in accordance with the usual dimensioning of a sheet metal part. Optionally, the central part can have a variable extension in the lateral direction. The extension of the central part in the lateral direction can be variable, particularly viewed in the connecting direction. For example, the central part can have an extension that increases towards the foot section. This can be particularly advantageous in combination with a one-piece extruded reinforcement core.An extension that increases toward the base section can provide greater stability in the area of ​​the base section. This can be particularly advantageous because bending forces can occur in the base section when the base section is attached to a supporting structure and tensile forces, e.g., caused by wind, act in the direction of the connection.

[0011] Preferably, the first end part and the second end part have a maximum lateral extension that is at least two times greater than the central part. The greater extension of the first end part can be advantageous for ensuring better stability of the head section. The greater extension of the second end part can ensure a stable connection to a support structure.

[0012] According to one embodiment, the central part is made of sheet metal, in particular sheet steel. A sheet metal version can be simple to manufacture. On the other hand, a sheet metal version can save material and, due to the thinness of the sheet metal, also save space. Since the central part is primarily subjected to tensile forces in the connection direction during use, good stability can still be achieved with a thin sheet. The thickness of the sheet metal can preferably be in the range of 2 to 10 mm, particularly preferably 2.5 to 4 mm.

[0013] According to one embodiment, the middle part has at least two lateral openings in the region of the head section and / or in the region of the foot section, wherein at least one of the end parts, optionally both end parts, each comprises two side parts provided with extensions adapted to the shape and number of the lateral openings, wherein the side parts are inserted with their extensions from two sides opposite in the lateral direction into the lateral openings, so that in each of the at least two lateral openings, an extension of one side part is arranged above an extension of the other side part. The expression "above an extension" is to be understood in particular to mean that the extensions are arranged one above the other and adjacent to one another in the connecting direction. The extensions are preferably clamped together in the lateral openings.The lateral openings can preferably be designed as slots extending in the longitudinal direction. In other words, the lateral openings can preferably have a greater extension in the longitudinal direction than in the connecting direction. The extension in the connecting direction is particularly designed such that the two extensions can be placed one above the other in the respective opening in the connecting direction. Advantageously, the extensions can be arranged one above the other in the openings by pressing them in. In this embodiment, the central part therefore extends into the head section and / or into the foot section. In this embodiment, the two side parts can be wedged together, effectively preventing the side parts from bending over.This can be particularly advantageous because tensile forces that usually occur act on the head section and, if the head section is too weak, could lead to the head section tearing off. This effect can be counteracted particularly effectively by canting the extensions. The middle part particularly preferably has 3 to 5, very preferably 4, lateral openings in the area of ​​the head section and / or in the area of ​​the foot section. It has been shown that under the usual conditions to which a holding element is exposed, this number can provide particularly good stability. Especially with the dimensions typical in roof construction and the resulting dimensions for the holding element in the prior art, 4 lateral openings ensure particularly good stability. The side parts can, for example, be designed as sheet metal parts, in particular as comb-like sheets.The extensions can, in particular, correspond to the teeth or tines of a comb. Optionally, the side parts can have a region, particularly an intermediate region, with an oblique profile when viewed in the longitudinal direction. An example of an intermediate region is described below for the second end part.

[0014] Preferably, the two side parts of the second end part each have a surface whose normal vector runs essentially parallel to the connecting direction. According to the usual definition, a normal vector is a vector that is perpendicular or at right angles to the respective surface. Such an arrangement of the surfaces can enable a particularly good connection of the foot section to a supporting structure. Very particularly preferably, the two side parts of the second end part each have a surface whose normal vector runs essentially parallel to the connecting direction and which lies in a plane in which the middle part ends, viewed in the connecting direction, or into which the middle part does not extend. In other words, in this case, the middle part does not extend beyond the surface of the side parts.The side parts can have an intermediate region between the extensions and the respective surface, which has an oblique course, so that the respective surface is not arranged at the height of the openings when viewed in the connection direction and is preferably offset from the openings in the positive connection direction.

[0015] According to one embodiment, the middle part and the first end part of the reinforcement core are made together in one piece, wherein the first end part is formed in that the end of the reinforcement core in the head section is bent in the positive lateral direction in at least a first partial section of the head section and is bent in the negative lateral direction in at least a second partial section of the head section. The bending can be understood in the sense of edging. Preferably, the partial sections of the head section are arranged one behind the other in the longitudinal direction. Preferably, several partial sections of the head section that are bent in the negative lateral direction and several partial sections of the head section that are bent in the positive lateral direction are provided alternately in the longitudinal direction.Particularly preferably, 2 to 4 subsections of the head section are provided in each of the two lateral directions, most preferably 3 subsections of the head section in each case. For example, a total of 6 subsections of the head section can be bent alternately in one of the two lateral directions. Preferably, the subsections of the head section are bent by more than 90 degrees and less than 180 degrees, particularly preferably by more than 120 degrees and less than 160 degrees. The one-piece part can, for example, be manufactured as a sheet metal which is cut in the region of the intended head section in order to thus create the subsections of the head section and to be able to bend them in opposite directions. The bending can in particular be provided around an axis arranged parallel to the longitudinal direction.

[0016] According to one embodiment, the central part and at least a part of the second end part are made together in one piece as an extended central part, wherein the at least a part of the second end part of the reinforcement core is formed in that the end of the extended central part in the foot section is bent in a positive lateral direction in at least a first subsection of the foot section and is bent in a negative lateral direction in at least a second subsection of the foot section - preferably in at least a second and a third subsection of the foot section, between which the first subsection of the foot section lies. Preferably, three subsections of the foot section are provided in this embodiment.Preferably, the sections of the foot section are bent substantially by 90 degrees, in particular such that the sections of the foot section form a surface spanned by the longitudinal and lateral directions, or whose normal vector runs parallel to the connection direction. The sections of the foot section can have one or more holes. At least some of the holes can be designed for the passage of fastening means, for example, screws. At least some of the holes, in particular core holes, can serve to enable a better connection of the plastic material.

[0017] The latter core holes can, in particular, be completely filled with the plastic material. The holes for the fastening means are preferably completely covered by the plastic material, but in such a way that they still exist as holes in the holding element. Corrosion of the reinforcing core can advantageously be counteracted by covering them with the plastic material. It can be provided to combine this and the previously explained embodiment, so that the central part, the first end part, and at least a part of the second end part are made in one piece. According to a preferred embodiment, the second end part has at least one additional first reinforcing plate in the foot section. Optionally, the first reinforcing plate can be firmly connected to the end of the extended central part. The connection can be provided by a connecting means. The connection can, for example, be provided by rivetless stamping.The first reinforcement plate can provide additional stability to the foot section and, in particular, counteract any bending back of the bent parts due to tensile forces acting in the connection direction.

[0018] According to a further embodiment, the at least one part of the second end part is formed by bending in such a way that, viewed in the lateral direction, it has a surface on both sides of the central part, the normal vector of which runs substantially parallel to the connecting direction, wherein the additional first reinforcing sheet is arranged substantially parallel to the surface of the at least one part of the second end part and comprises a recess which corresponds to the shape of the end of the extended central part bent in the positive lateral direction in the first sub-section of the foot section, wherein the end of the extended central part bent in the positive lateral direction in the first sub-section of the foot section is offset in the connecting direction relative to the ends in the second and third sub-sections of the foot section, so that it is arranged in the recess,The ends of the extended central section, which are bent in the negative lateral direction in the second and third sections of the foot section, rest flat against the first reinforcing plate. This embodiment further improves the stability of the foot section, while the recess allows for a relatively thin design of the foot section, as seen in the connecting direction.

[0019] According to a further embodiment, the second end part has a second reinforcing plate in the foot section, wherein the second reinforcing plate is arranged on the side of the end of the extended middle part bent in the positive lateral direction, both on the bent end and on the first reinforcing plate. By providing two reinforcing plates, particularly good stability, in particular flexural rigidity, of the foot region can be achieved with relatively simple manufacturing means, wherein the foot region can still be designed relatively thin. Because the second reinforcing plate is arranged on the side of the end of the extended middle part bent in the positive lateral direction, the side on which only a partial region is bent can be particularly reinforced. Optionally, the second reinforcing plate can be firmly connected to the end of the extended middle part, in particular in the same way as the first reinforcing plate.The connection can be provided by a connecting means. The connection can preferably be provided by rivetless stamping. This connection can provide particularly good stability against backward bending, in particular by preventing the sections from being pulled out of the grip of the reinforcement plates. In this case, rivetless stamping can be particularly advantageous and easy to implement.

[0020] According to one embodiment, the central part has a pronounced profiling in the lateral direction. This embodiment can be combined with the other embodiments. The profiling can advantageously stiffen the central part. This can counteract bending of the holding element. In particular, the profiling can be advantageous if the central part is designed as a sheet metal. The profiling can preferably be designed such that, viewed in the connecting direction, a zigzag shape is embossed into the central part at least in sections. Alternatively, a wave-shaped profiling can preferably be provided, which achieves a lower notch effect while simultaneously achieving high flexural rigidity. Sectionally can refer both to an extension in the connecting direction and to an extension in the longitudinal direction.Increased stability through profiling can, for example, be used to reduce the material thickness of the reinforcement core.

[0021] According to one embodiment, the reinforcement core is made as a single piece, an extruded metal part, in particular made of aluminum. Manufacturing as an extruded metal part can be particularly cost-effective. A cross-section when viewed longitudinally can advantageously be adapted according to the respective requirements. An extruded aluminum part can be particularly advantageous. While an aluminum part should preferably be made thicker than, for example, a steel part for stability reasons, it has been shown that this increased thickness can be at least partially compensated for by a thinner plastic material. The advantage of the single-piece design is that no additional assembly effort is required to produce the reinforcement core.

[0022] According to one embodiment, the plastic material is a glass-fiber-reinforced plastic material. This embodiment can be combined, in particular, with the other embodiments. Glass-fiber reinforcement of the plastic can further increase the stability of the retaining element, in particular, increased flexural rigidity. Furthermore, it has been shown that glass-fiber reinforcement can reduce the susceptibility of the plastic material to fractures.

[0023] According to one embodiment, the holding element comprises a plurality of lateral ribs running in the connecting direction. This embodiment can in particular be combined with the other described embodiments. The ribs are preferably made of the plastic material. The ribs can further increase the stability of the holding element. In particular, the ribs can increase the flexural rigidity of the holding element. The ribs can be particularly advantageous if the central part is made of sheet metal. This can compensate for any somewhat lower flexural rigidity of the sheet metal. The ribs can also be particularly advantageous if the second end part is provided by bending, in that the ribs can counteract any backward bending. The ribs can preferably run along the connecting section and end on the foot section.This makes it particularly easy to achieve improved flexural rigidity. The ribs can, viewed in the lateral direction, on each side of the connecting section comprise two outer ribs as viewed in the longitudinal direction. Outer ribs can in particular be ribs which, viewed in the longitudinal direction, are arranged on the edge of the holding element. The outer ribs can extend on the foot section as far as the end of the foot section as viewed in the lateral direction. The extension of the ribs in the lateral direction can be provided to decrease in the negative connecting direction, so that the ribs have a triangular shape when viewed parallel to the longitudinal direction. Additionally or alternatively, the ribs can, viewed in the lateral direction, on each side of the connecting section comprise at least one, preferably a plurality of, inner rib(s) as viewed in the longitudinal direction. For example, three inner ribs can be provided on each side.Inner ribs can, in particular, be ribs that are spaced apart from the edge of the retaining element in the longitudinal direction. The inner ribs can extend on the foot section, viewed laterally, preferably up to a maximum of one-third of the distance to the end of the foot section. This can advantageously facilitate mounting, e.g., with screws, of the retaining element on a supporting structure.

[0024] The various advantageous embodiments can in principle be combined with one another, unless this has been implicitly or explicitly excluded.

[0025] Further advantages and features of the present invention will become apparent from the following description with reference to the figures. Individual features disclosed in the illustrated embodiments may also be used in other embodiments, unless expressly excluded. They show:

[0026] Figure 1 shows a holding element according to an embodiment of the invention;

[0027] Figure 2 shows a holding element according to a further embodiment of the invention;

[0028] Figure 3 shows a part of a reinforcement core in the region of the head portion of a retaining element according to an embodiment of the invention in a disassembled state; Figure 4 shows a part of a reinforcement core in the region of the head portion of a retaining element according to the embodiment of the invention shown in Figure 3 in an assembled state;

[0029] Figure 5 shows a part of a reinforcement core in the region of the foot section of a holding element according to an embodiment of the invention in a disassembled state;

[0030] Figure 6 shows a part of a reinforcement core in the region of the foot section of a holding element according to the embodiment of the invention shown in Figure 5 in an assembled state;

[0031] Figure 7 shows a part of a reinforcing core in the region of the head section of a holding element according to a further embodiment of the invention;

[0032] Figure 8 shows a part of a reinforcement core in the region of the foot section of a holding element according to a further embodiment of the invention in a disassembled state;

[0033] Figure 9 shows a part of a reinforcement core in the region of the foot section of a holding element according to the embodiment of the invention shown in Figure 8 in an assembled state;

[0034] Figure 10 shows a part of a reinforcement core in the region of the foot section of a holding element according to a further embodiment of the invention in a disassembled state;

[0035] Figure 11 shows a part of a reinforcement core in the region of the foot portion of a retaining element according to the embodiment of the invention shown in Figure 10 in an assembled state; Figure 12 shows a reinforcement core of a retaining element according to an embodiment of the invention;

[0036] Figure 13 is a sectional view taken along the viewing direction A - A indicated in Figure 12; and

[0037] Figure 14 shows a reinforcing core of a holding element according to a further embodiment of the invention.

[0038] Figure 1 shows a holding element according to one embodiment of the invention. The holding element has a head section 1, a foot section 2 and a connecting section 3 which connects the head section 1 and the foot section 2. The connecting section 3 extends along a connecting direction V from the head section 1 to the foot section 2. In addition to the connecting direction V, there is a lateral direction S perpendicular to the connecting direction V and a longitudinal direction L perpendicular to the connecting direction V and the lateral direction S. The holding element has a reinforcing core 10 (not visible here) and a plastic material 20 surrounding the reinforcing core 10, which plastic material forms the outer layer of the holding element. The reinforcing core 10 can, for example, be made of sheet metal. The plastic material 20 can preferably be a glass fiber reinforced plastic material.In this embodiment, the holding element optionally has a plurality of lateral ribs 25 running in the connecting direction V. The ribs 25 can, for example, also be made of the plastic material 20. Advantageously, the ribs 25 can achieve increased flexural rigidity of the holding element. The ribs 25 can therefore be a particularly advantageous addition if the reinforcing core 10 is made of sheet metal. The ribs 25 can run along the connecting section 3 and end on the foot section 2. The ribs 25 comprise two outer ribs 25 and a plurality of inner ribs 25 on each side of the connecting section. The outer ribs 25 extend on the foot section 2 in the lateral direction S up to the end of the foot section 2. The inner ribs 25 are spaced from the edge of the holding element in the foot section, as seen in the longitudinal direction L.The extension of the ribs 25 in the lateral direction S is designed to decrease, as seen in the negative connection direction V. The retaining element of this embodiment, as well as the retaining element of the other embodiments shown, can be used in particular for use in a roof or facade construction. The head section 1 can, for example, engage in appropriately shaped ribs of one or two building sheets. The foot section 2 has holes 4 for attaching the retaining element to a supporting structure using fasteners, such as screws.

[0039] Figure 2 shows a retaining element according to a further embodiment of the invention. The retaining element has a head section 1, a foot section 2, and a connecting section 3 that connects the head section 1 and the foot section 2. The connecting section extends along a connecting direction V from the head section 1 to the foot section 2. The retaining element has a reinforcing core 10 (not visible here) and a plastic material 20 surrounding the reinforcing core 10, which forms the outer layer of the retaining element. In this embodiment, the reinforcing core 10 is preferably made in one piece as an extruded metal part, in particular from aluminum. Alternatively, the reinforcing core 10 can be made from sheet metal, for example.

[0040] The plastic material 20 can preferably be a glass-fiber-reinforced plastic material. In this embodiment, the retaining element does not have any lateral ribs 25. However, it would be conceivable to also provide this embodiment with one or more lateral ribs 25 in order to achieve increased flexural rigidity of the retaining element. However, it has been shown that a reinforcement core 10 manufactured as an extruded metal part can already provide sufficiently high flexural rigidity. In particular, for attaching the retaining element to a support structure with a fastening means, the base section 2 has holes 4.

[0041] Figure 3 shows a part of a reinforcement core 10 in the region of the head section 1 of a holding element according to an embodiment of the invention in a disassembled state. Figure 4 shows a corresponding part of a reinforcement core 10 in the region of the head section 1 of a holding element according to this embodiment of the invention in an assembled state. In this embodiment, a one-piece central part 13 of the reinforcement core 10 extends through the connecting section 3 into the head section 2. In the head section 2, a first end part 11 adjoins the central part.

[0042] 13. In this embodiment, the middle part 13 has four lateral openings

[0043] 14 in the region of the head section 1 and the first end part 11 comprises two side parts 15 each, which are provided with four extensions 151 adapted to the geometry of the four lateral openings 14. The lateral openings 14 in this embodiment are designed as slots extending in the longitudinal direction L. As can be seen in Figure 4, the side parts 15 with their extensions 151 are inserted into the lateral openings 14 from two opposite sides in the lateral direction S, so that in each of the four lateral openings 14, an extension 151 of one side part 15 is arranged above an extension 151 of the other side part 15, viewed in the connecting direction V. The central part 13 and the side parts 15 are each made of sheet metal. For example, sheet steel can be used. Optionally, another material would also be conceivable, for example a non-metallic material such as polyamide.Through the side parts 15, here representing the first end part 11, the first end part 11 extends in a positive and negative lateral direction S, i.e., in both directions of the drawn axis of the lateral direction S, beyond the central part 13. Thus, the reinforcement core 10 is wider in the head section 1 than in the connecting section 3.

[0044] Figures 5 and 6 show part of a reinforcement core 10 in the region of the foot section 2 of a holding element according to an embodiment of the invention. In Figure 5, this part is shown in a disassembled state or in an exploded view. In Figure 6, this part is shown in an assembled state. This embodiment can, for example, be combined with the embodiment shown in Figures 3 and 4. A central part 13 extending through the connecting section 3 is made in one piece with part of the second end part 12 as an extended central part 130. For this purpose, the end of the extended central part 130 in the foot section 2 is bent in a first sub-section 121 in the positive lateral direction S and in a second sub-section 122 and a third sub-section 123 in the negative lateral direction S.The first subsection 121 of the foot section 2 lies, viewed in the longitudinal direction L, between the second subsection 122 of the foot section 2 and the third subsection 123 of the foot section 2. In this embodiment, the extended central part 130 is preferably made of sheet metal, in particular sheet steel. In addition, the second end part 12 comprises an additional first reinforcement plate 16 and an additional second reinforcement plate 17, which are arranged in the region of the foot section. Optionally, the first reinforcement plate 16 and the second reinforcement plate 17 can be firmly connected to the end of the extended central part 130, preferably by rivetless stamping.The partial sections 121, 122, 123 of the foot section 2 of the extended middle part 130 are formed by bending in such a way that, viewed in the lateral direction S, they have a surface on both sides of the middle part 13, the normal vector N2 of which runs essentially parallel to the connecting direction V. The first reinforcing plate 16 is essentially parallel to the surface of the partial sections 121, 122, 123 of the foot section 2 and comprises a recess 161 which corresponds to the shape of the end of the extended middle part 130 bent in the positive lateral direction S in the first partial section 121 of the foot section 2. The ends of the extended middle part 130 bent in the negative lateral direction S in the second and third partial sections 122, 123 of the foot section 2 lie flat on the first reinforcing plate 16.On the other hand, the end of the extended central part 130 bent in the positive lateral direction S in the first sub-section 121 of the foot section 2 is offset in the connecting direction V relative to the ends in the second and third sub-sections 122, 123 of the foot section 2, so that it is arranged in the recess 161. In other words, the end of the first sub-section 121 of the foot section 2 lies at the level of the first reinforcing plate 16, as seen in the connecting direction. The second reinforcing plate 17, in turn, is arranged on the side of the end of the extended central part 130 bent in the positive lateral direction S, both on the bent end of the second and third sub-sections 122, 123 of the foot section 2 and on the first reinforcing plate 16. Figure 7 shows part of a reinforcing core 10 in the region of the head section 1 of a holding element according to a further embodiment of the invention.This embodiment can, for example, be combined with the embodiment shown in Figures 5 and 6 or 8 and 9. A central part 13 and a first end part 11 of the reinforcement core 10 are made together in one piece, preferably from sheet metal. The first end part 11 is formed in that the end of the reinforcement core 10 in the head section 1 is bent in some sub-sections 111 in the positive lateral direction S and in some sub-sections 112 in the negative lateral direction S. Viewed in the longitudinal direction L, the sub-sections 112 of the head section 1 that are bent in the negative lateral direction and the sub-sections 111 of the head section 1 that are bent in the positive lateral direction are each arranged alternately with one another. In total, therefore, six sub-sections 111, 112 of the head section 1 are each bent alternately in one of the two directions S.The partial sections 111, 112 of the head section 1 are preferably bent by approximately 120 degrees to 160 degrees, so that an angle between the central part 13 and the bent partial sections 111, 112 of the head section 1 is approximately 20 degrees to 60 degrees. As a result of the bending, the first end part 11 extends beyond the central part 13 in a positive and negative lateral direction S. The partial sections 111, 112 of the head section 1 are arranged one behind the other in the longitudinal direction L.

[0045] Figures 8 and 9 show part of a reinforcement core 10 in the region of the foot section 2 of a holding element according to a further embodiment of the invention. In Figure 8, this part is shown in a disassembled state or in an exploded view. In Figure 9, this part is shown in an assembled state. This embodiment can, for example, be combined with the embodiment shown in Figures 3 and 4 or 7. In this embodiment, a central part 13 extending through the connecting section 3 into the foot section 2 has four lateral openings 14 in the region of the foot section 2. The central part 13 is preferably made of sheet metal. The lateral openings 14 are in the form of slots.A second end part 12 is arranged in the base section 2 and comprises side parts 15, each of which is provided with four extensions 151 adapted to the geometry of the lateral openings 14. The side parts 14 are preferably made of sheet metal. The side parts 15, with their extensions 151, extend into the lateral openings from two opposite sides in the lateral direction S.

[0046] 14 inserted so that in each of the four lateral openings 14 an extension 151 of one side part 15 is placed over an extension 151 of the other side part

[0047] 15 is arranged. Due to the extension of the side parts 15, the second end part 12 extends beyond the central part 13 on both sides, as viewed in the lateral direction. The two side parts 15 of the second end part 12 each have a surface whose normal vector N1 runs essentially parallel to the connecting direction V.

[0048] Figure 10 shows a part of a reinforcement core 10 in the region of the foot section 2 of a holding element according to a further embodiment of the invention in a disassembled state. Figure 11 shows a corresponding part of the embodiment of a reinforcement core 10 shown in Figure 10 in the region of the foot section 2 of a holding element in an assembled state. This embodiment can, for example, be combined with the embodiment shown in Figures 3 and 4 or 7. In this embodiment, a central part 13 extending through the connecting section 3 into the foot section 2 has four lateral openings 14 in the region of the foot section 2. The central part 13 is preferably made of sheet metal. The lateral openings 14 are in the form of slots.A second end part 12 is arranged in the foot section 2 and comprises side parts 15 each, which are each provided with four extensions 151 adapted to the shape of the lateral openings 14. The side parts 14 are preferably made of sheet metal. The side parts 15 are inserted with their extensions 151 from two sides opposite in the lateral direction S into the lateral openings 14, so that in each of the four lateral openings 14, an extension 151 of one side part 15 is arranged above an extension 151 of the other side part 15. Due to the extension of the side parts 15, the second end part 12 extends beyond the central part 13 on both sides, viewed in the lateral direction. The two side parts 15 of the second end part 12 each have a surface whose normal vector N1 runs substantially parallel to the connecting direction V and which lies in a plane in which the central part 13 ends as seen in the connecting direction V.The side parts 15 have an intermediate region 152 between the extensions 151 and the respective surface, which has an oblique course, so that the respective surface is not arranged at the height of the openings 14 as seen in the connecting direction V, but is offset from the openings 14 in the positive connecting direction V.

[0049] Figure 12 shows a reinforcement core 10 of a retaining element according to one embodiment of the invention. The reinforcement core 10 can, for example, be provided for a retaining element as shown in Figure 1 or Figure 2. The reinforcement core 10 comprises a one-piece central part 13 extending through a connecting section 3 of the retaining element, a first end part 11 arranged in a head section 1 of the retaining element, and a second end part 12 arranged in a foot section 2 of the retaining element. The first end part 11 and the second end part 12 each adjoin the central part 13 and extend perpendicularly beyond the central part 13 in a positive and negative lateral direction S. As a result, the reinforcement core 10 is wider in the head section 1 and in the foot section 2 than in the connecting section 3.The middle part 13 as well as the first end part 11 and the second end part 12 are preferably made of sheet metal, in particular sheet steel. The first end part 11 or the reinforcement core 10 in the region of the head section 1 is designed in this embodiment essentially as shown in Figures 3 and 4. The second end part 12 or the reinforcement core 10 in the region of the foot section 2 is designed in this embodiment essentially as shown in Figures 5 and 6. The middle part 13 has an extension in the lateral direction S that is more than a factor of 4 smaller than in the connecting direction V and in the longitudinal direction L. In addition, both the first end part 11 and the second end part 12 have a maximum extension in the lateral direction S that is more than a factor of two greater than the middle part 13. In this embodiment, the middle part 13 has a pronounced profiling in the lateral direction S.This is illustrated in Figure 13 in the viewing direction AA marked in Figure 12. In this embodiment, the profiling is designed, for example, such that a zigzag shape is embossed into the central part 13 in sections, viewed in the connecting direction V. Furthermore, the central part has several core holes 5. The core holes 5 have the advantage of enabling better connection and support of the plastic material 20 and the reinforcement core 10. This allows the connection of the retaining element to be stabilized.

[0050] Figure 14 shows a reinforcement core 10 of a holding element according to a further embodiment of the invention. The reinforcement core 10 can preferably be provided for a holding element as shown in Figure 2. In this embodiment, the reinforcement core 10 is made as a one-piece extruded metal part. Preferably, the reinforcement core 10 can be made of aluminum or an aluminum alloy. The central part 13 comprises a one-piece central part 13 extending through a connecting section 3 of the holding element, a first end part 11 arranged in a head section 1 of the holding element, and a second end part 12 arranged in a foot section 2 of the holding element. The first end part 11 and the second end part 12 each adjoin the central part 13 and extend vertically beyond the central part 13 in a positive and negative lateral direction S.The middle part 13 has an extension in the lateral direction S that is less than a factor of 4 than in the connecting direction V and in the longitudinal direction L. In addition, both the first end part 11 and the second end part 12 have a maximum extension in the lateral direction S that is more than a factor of two greater than the middle part 13. Optionally, holes 4 and / or core holes 5 can also be provided in this embodiment in the region of the foot section 2 and / or the middle part 13, analogous to the previously shown embodiments.

[0051] List of reference symbols:

[0052] 1 head section

[0053] 2 foot section

[0054] 3 connecting section 4 holes

[0055] 5 core holes

[0056] 10 reinforcement core

[0057] 11 first end part of the reinforcement core

[0058] 111 first section of the head section

[0059] 112 second section of the head section

[0060] 12 second end part of the reinforcement core

[0061] 121 first section of the foot section

[0062] 122 second section of the foot section

[0063] 123 third section of the foot section

[0064] 13 Middle part of the reinforcement core

[0065] 130 extended middle section

[0066] 14 side openings

[0067] 15 Side panel

[0068] 151 appendages

[0069] 152 Intermediate area

[0070] 16 first reinforcement plate

[0071] 161 recess

[0072] 17 second reinforcement plate

[0073] 20 plastic material

[0074] 25 ribs

[0075] V Connection direction

[0076] S lateral direction

[0077] N1 normal vector

[0078] N2 normal vector

[0079] L longitudinal direction

Claims

Claims 1. A retaining element, in particular for use in a roof or facade construction, comprising a head section (1), a foot section (2), and a connecting section (3), wherein the connecting section (3) extends along a connecting direction (V) from the head section (1) to the foot section (2), wherein the retaining element comprises a reinforcing core (10) and an outer plastic material (20) surrounding the reinforcing core (10), wherein the reinforcing core (10) comprises a central part (13) extending through the connecting section (3), a first end part (11) arranged in the head section (1), and a second end part (12) arranged in the foot section (2), wherein the central part (13) is formed in one piece,wherein the first end part (11) and the second end part (12) each adjoin the central part (13) and extend beyond the central part (13) in a positive and negative lateral direction (S) perpendicular to the connecting direction (V).

2. Holding element according to claim 1, wherein the first end part (11) and the second end part (12) have a maximum extension in the lateral direction (S) which is at least a factor of two greater than the central part (13).

3. Holding element according to one of the preceding claims, wherein the central part (13) is made of sheet metal, in particular sheet steel.

4. Holding element according to one of the preceding claims, wherein the central part (13) has at least two lateral openings (14) in the region of the head section (1) and / or in the region of the foot section (2), wherein at least one of the end parts (11, 12), optionally both end parts (11, 12), each comprises two side parts (15) provided with extensions (151) adapted to the shape and number of the lateral openings (14), wherein the side parts (15) are inserted with their extensions (151) from two sides lying opposite one another in the lateral direction (S) into the lateral openings (14), so that in each of the at least two lateral openings (14) an extension (151) of the one side part (15) is arranged above an extension (151) of the other side part (15).

5. Holding element according to claim 4, wherein the two side parts (15) of the second end part (12) each have a surface whose normal vector (N1) runs substantially parallel to the connecting direction (V) and which lies in a plane in which the central part (13) ends as seen in the connecting direction (V) or into which the central part (13) does not extend.

6. Holding element according to one of the preceding claims, wherein the middle part (13) and the first end part (11) of the reinforcing core (10) are made together in one piece, wherein the first end part (11) is formed in that the end of the reinforcement core (10) in the head section (1) is bent in the positive lateral direction (S) in at least a first partial section (111) of the head section (1) and is bent in the negative lateral direction (S) in at least a second partial section (112) of the head section (1).

7. Holding element according to claim 6, wherein a plurality of partial sections of the head section which are bent in the negative lateral direction and a plurality of partial sections of the head section which are bent in the positive lateral direction are provided alternately in the longitudinal direction and / or wherein the sections of the head section are bent by more than 90 degrees and less than 180 degrees.

8. Holding element according to one of the preceding claims, wherein the central part (13) and at least a part of the second end part (12) are made together in one piece as an extended central part (130), wherein the at least a part of the second end part (12) of the reinforcement core (10) is formed in that the end of the extended central part (130) in the foot section (2) is bent in the positive lateral direction (S) in at least a first partial section (121) of the foot section (2) and is bent in the negative lateral direction (S) in at least a second partial section (122) of the foot section (2) - preferably in at least a second and a third partial section (122, 123) of the foot section (2), between which the first partial section (121) of the foot section (2) lies.

9. Holding element according to claim 8, wherein the second end part (12) has at least one additional first reinforcing plate (16) in the foot section, wherein optionally the first reinforcing plate (16) is firmly connected to the end of the extended middle part (130) with a connecting means and / or by rivetless stamping.

10. Holding element according to claim 9, wherein the at least one part of the second end part (12) is formed by the bending in such a way that, viewed in the lateral direction (S), it has a surface on both sides of the central part (13), the normal vector (N2) of which runs substantially parallel to the connecting direction (V), wherein the additional first reinforcing sheet (16) is arranged substantially parallel to the surface of the at least one part of the second end part (12) and comprises a recess (161) which corresponds to the shape of the end of the extended central part (130) bent in the first partial section (121) of the foot section (2) in the positive lateral direction (S), wherein the end of the extended central part (130) bent in the first partial section (121) of the foot section (2) in the positive The end of the extended middle part (130) bent in the negative lateral direction (S) is offset in the connecting direction (V) relative to the ends in the second and third partial sections (122, 123) of the foot section (2) so that it is arranged in the recess (161), the ends of the extended middle part (130) bent in the negative lateral direction (S) in the second and third partial sections (122, 123) of the foot section (2) resting flatly on the first reinforcing plate (16).

11. A holding element according to claim 10, wherein the second end part (12) has a second reinforcing plate (17) in the foot section, wherein the second reinforcing plate (17) is arranged on the side of the end of the extended middle part (130) bent in the positive lateral direction (S) both on the bent end and on the first reinforcing plate (16).

12. Holding element according to one of claims 1 to 3, wherein the central part (13) has a pronounced profiling in the lateral direction.

13. Holding element according to one of the preceding claims, wherein the reinforcing core (10) is made in one piece as an extruded metal part, in particular made of aluminum.

14. Holding element according to one of the preceding claims, wherein the plastic material (20) is a glass fiber reinforced plastic material.

15. Holding element according to one of the preceding claims, wherein the holding element comprises a plurality of lateral ribs (25) made of the plastic material (20) extending in the connecting direction (V).

Images