Patent Application
20220333432
The present invention relates to a profiled plastic section for a metal/plastic composite profiled section. Additional claims are geared toward a metal/plastic composite profiled section with the profiled plastic section and a frame with the metal/plastic composite profiled section.
The profiled plastic section serves in particular as an elementary element (e.g., as a component in profiled frame sections) for manufacturing thermally insulated windows, window walls, doors or facade elements, and is typically firmly attached with two profiled metal sections—usually extruded aluminum profiled sections, wherein the profiled plastic section is arranged between the profiled metal sections in terms of its longitudinal direction, which forms a metal/plastic composite profiled section. The profiled plastic section here forms a thermal separation plane between the two profiled metal sections, which reduces a heat flow from the one profiled metal section to the other profiled metal section, as a rule an outside and an inside profiled metal section.
If the two profiled metal sections are subjected to a variable longitudinal expansion, e.g., through exposure to different temperatures, shear stresses can arise between the profiled metal sections and profiled plastic sections, which can lead to undesirable deflections of the metal/plastic composite profiled section. Precisely in large-opening window or door systems, this can lead to functional limitations (“jamming”, “squeaking”) or functional failures caused by excessive warping of the profiled parts.
In order to resolve this problem, EP 0 829 609 B1 proposes a thermally insulated composite profiled section for doors, windows or facades, which consists of profiled metal sections and at least one insulating strip preferably made out of plastic, which is arranged between the profiled metal sections and connected with the profiled metal sections on the longitudinal edges. The insulating strip or the insulating strips arranged parallel to each other consist of two parts, wherein each insulating strip part is connected in a shear-resistant manner with the allocated profiled metal section, and the central connection between the two insulating strip parts is designed as a sliding guide. In the composite profiled section shown by EP 0 829 609 B1, a problem can be encountered in which the central connection can only absorb transverse forces to a limited extent, since it acts like a kind of ball-and-socket joint. In an extreme case, the ball can here be taken out of the socket due to the slight overlap, e.g., due to the elastic deformation of the socket, material fatigue or extreme environment conditions.
An object of the present invention is to provide an alternative, two-part profiled plastic section that prevents shear stresses from arising between the profiled metal sections and the profiled plastic section, and has an especially high stability and safety—in particular during exposure to high transverse tensile forces.
The object is achieved by the subject matter of the independent claims. Advantageous embodiments are part of the subclaims, the following specification and the figures.
A first aspect of the invention provides a shear-free profiled plastic section for a metal/plastic composite profiled section. The profiled plastic section has a shear-free design in its longitudinal direction, and can be used to produce a thermal separation between two profiled metal sections that can be connected with the profiled plastic section, in particular made out of aluminum, within the metal/plastic composite profiled section. The profiled plastic section comprises a first profiled element, in particular one made out of a first polymer material, and at least one separate, second profiled element, in particular one made out of a second polymer material. The profiled plastic section thus has a two-part design (first profiled element and second profiled element).
The insulating and damping properties (heat, sound, oscillation) of the profiled plastic section can be controlled by the material selected. The first polymer material can be the same as the second polymer material. However, it is not absolutely necessary that the profiled plastic section be fabricated out of a single material. The profiled elements can likewise consist of different polymer materials, wherein thermoplastic or thermosetting polymers are preferably used. Use can be made of polyamide, including polyamide 66, which has an especially high thermal stability, or polyamide 6, partially aromatic polyamides, polyester, polyether, polyphenylene ether, styrene polymers, styrene copolymers vinyl polymers, polyolefins, aromatic or aliphatic polyketones, polyphenylene sulfides and/or blends of the aforementioned polymers. Phenol-, melamine-, polyester- or vinyl ester resins can also be used. As a rule, the polymer material is fiber-reinforced (e.g., with glass, mineral, polymer, carbon, ceramic or metal fibers), so as to tailor the mechanical values or physical properties of the material to the application and improve them. In particular, the materials can also be given a porous (e.g., closed-pore) design via specific manufacturing processes.
Furthermore, the first profiled element and second profiled element together form a latching mechanism, by means of which a connection can be generated between the first profiled element and second profiled element, preferably by means of a form-fitting connection, wherein the connection, in particular the form-fitting connection, only acts in a width direction and height direction of the profiled plastic section, but not in a longitudinal direction of the profiled plastic section.
The first profiled element and second profiled element further overlap in their width direction if the connection has been generated between the first profiled element and second profiled element, in particular via a form-fitting connection, or if the profiled elements are interlocked. In particular, the overlap can encompass a large area, e.g., more than 25%, preferably more than 30%, especially preferably more than 40% of the entire width of the profiled plastic section, wherein the distances between the non-overlapping areas can each preferably measure 1.0 mm or more, especially preferably each 2.5 mm or more.
In addition, the connection, in particular the form-fitting connection, between the first and second profiled element can be established by moving the profiled elements, preferably via a first placement in the width direction, and then a latching through movement in a height direction of the profiled plastic section.
Furthermore, the connection, in particular the form-fitting connection, between the first profiled element and second profiled element is configured in such a way as to permit an independent and free movement of the first profiled element and second profiled element in a longitudinal direction of the interlocked profiled plastic section (shear-free connection in the longitudinal direction of the profiled plastic section) if a first metal component is connected with the first profiled element in preferably a shear-resistant or shear-soft manner, and if a second metal component is connected with the second profiled element in preferably a shear-resistant or shear-soft manner. In other words, none of the profiled elements viewed separately is provided and set up to be simultaneously connected in a shear-resistant or shear-soft manner with the first and second metal component. In this conjunction, “shear-soft” can be understood in particular to mean that the materials of the profiled plastic section in question and of the metal component can absorb a limited amount of shear forces, and that a connection between the mentioned elements can be established.
The first profiled element can form a first connecting strip in particular on a first longitudinal edge of the profiled plastic section, and the second profiled element can form a second connecting strip in particular on a second longitudinal edge of the profiled plastic section. The connecting strips can be used to introduce the assembled profiled plastic section into corresponding receptacles of profiled metal sections, for example, and hold them there in a shear-resistant manner through traction or a form-fitting connection. The connecting strips are usually inserted into matching grooves of the profiled metal sections, and mechanically connected via so-called curling. It is here important that the profiled elements, and hence also the inside and outside profiled metal sections, can continue to independently move relative to each other in the longitudinal direction of the profiled plastic section. In particular, the first and second connecting strips can have an integral design. The first profiled element and second profiled element are fixed in their relative position to each other in the width direction and height direction, in particular via the form-fitting connection.
A complete plastic/metal composite profiled section can be fabricated with two profiled plastic sections and two profiled metal sections or metal components. In this case, two profiled plastic sections according to the invention can also be used, as a result of which a total of four profiled plastic section elements are used. However, the invention can likewise be carried over to higher profiled sections (in the height direction), e.g., so as to thereby manufacture a profiled plastic section that comprises a first profiled element, a broadly configured second profiled element and a third profiled element.
The profile geometries can or must be adjusted for various applications. For this reason, there is a plurality of possible profile variants. In particular, wall thicknesses, connecting strips (curling projections), contour progressions and a use of functional zones like flags, hooks, lugs, grooves, T-shaped projections, channels, hollow chambers, offsets and the use of materials and material combinations along with manufacturing processes for influencing the product properties (e.g., fiber orientation, fiber length or porosity) can be selected based on the intended application and possible customer requirements.
In the assembled state, the profiled plastic section extends in a longitudinal direction, a width direction and a height direction. In other words, the profiled plastic section has a length (in the longitudinal direction), a width (in the width direction) and a height (in the height direction). The mentioned directions run perpendicular to each other within the meaning of a Cartesian coordinate system. In its assembled state, the profiled plastic section typically extends in its longitudinal direction significantly more than in its width direction and in its height direction. Because the profiled elements preferably overlap a large surface in the width direction and are fixed in place by the latching mechanism, possibly a hinge and sliding element and additional transverse webs, the cohesion and stability of the assembled profiled plastic section are especially high. As a consequence, transverse forces, in particular transverse tensile forces, which act on the assembled profiled plastic section in the width direction or parallel thereto can be absorbed to an especially high degree. Because the form-fitting connection allows movements or displacements between the profiled elements, shear stresses between the profiled metal sections can be broken down via the shear-free profiled plastic section, and any resultant, undesired deflections of the metal/plastic composites, which arise in the end product, e.g., in windows and doors, owing to the temperature differences described above, can be avoided.
An embodiment provides that the first profiled element and second profiled element together form a sliding arrangement for aligning the profiled elements relative to each other. The sliding arrangement permits a rough alignment of the profiled elements relative to each other, and a displacement of the profiled elements relative to each other in the longitudinal direction of the profiled plastic section. The rough alignment of the profiled elements relative to each other makes it especially easy to latch them together. For this purpose, the sliding arrangement can comprise a sliding lug and corresponding groove. In particular, the sliding lug and groove can be shaped one corresponding to the other in such a way that the sliding lug can be introduced into the groove in essentially the width direction. After the sliding lug has been introduced into the groove, the connection between the profiled elements can be established by means of the latching mechanism.
It can further be provided that the first profiled element and second profiled element together comprise a sliding arrangement in the form of a loose hinge or in the form of a loose joint, wherein the first profiled element and second profiled element can be rotated around a rotational axis of the loose hinge or loose joint in such a way that profiled elements are connected by means of the latching mechanism, in particular via a form-fitting connection, as a result of which the profiled plastic section is fixed in place, and an undesired disassembly is prevented. In particular, the longitudinal direction of the assembled profiled plastic section can run parallel to the rotational axis of the loose hinge or loose joint. The loose hinge or loose joint can be configured in such a way, in combination with one or several latching mechanisms or overlapping transverse webs, as to generate a form-fitting connection between the first profiled element and second profiled element in the width direction and in the height direction of the profiled element. In other words, the loose hinge or loose joint alone does not yet ensure any cohesion between the profiled elements, but above all facilitates their alignment when starting to assemble the profiled plastic section, and further facilitates the assembly of the profiled plastic section due to the ability to screw or curl the profiled elements into each other. However, the connection, in particular the form-fitting connection, between the profiled elements is established either via the latching mechanism (possibly in conjunction with optional transverse webs), or can be established by the latching mechanism and possibly additional transverse webs interacting with the loose hinge or loose joint, but not via the loose hinge or loose joint by itself.
The combination consisting of the latching mechanism, e.g., with a hook pair, and the sliding arrangement, e.g., in the form of a loose hinge or loose joint or with a sliding lug and with a groove, enables an especially simple and precise assembly of the two profiled elements into the profiled plastic section. Two-part profiled plastic sections are typically fabricated in large lengths, wherein the profiled elements can typically have lengths within a range of 6-7 m, for example. Putting together two profiled sections into a profiled plastic section with assembly processes known from prior art is associated with a high outlay in conjunction with a precise alignment and an introduction of mutually corresponding areas of the profiled elements. As a result of the sliding arrangement, the profiled plastic section in this embodiment makes it possible to align the profiled elements easily and precisely relative to each other. For example, the first profiled element can be a female element, e.g., a groove, and the second profiled element can be a male element corresponding to the female element, e.g., a sliding lug, of the sliding arrangement. The male element can be introduced into the female element, as a result of which the profiled elements are essentially aligned relative to each other as provided, and can subsequently be tilted or twisted relative to each other in such a way that the profiled elements are connected with each other by the latching mechanism at least in a form-fitting manner.
The sliding arrangement can further comprise a trough-shaped, groove-shaped or notch-shaped groove (as a female element) of the first profiled element, for example, and a sliding lug corresponding with the shape of the groove (as the male element) of the second profiled element. Alternatively, the second profiled element can also have the groove and the first profiled element can have the sliding lug. Further possible for the sliding lug is a plurality of square, tapered, rounded, thickened, constricted, straight, inclined and/or angled geometries. The sliding lug or similar element can function as a latching and centering aid, and in the first step can be introduced into the correspondingly deepened groove, as result of which the profiled elements are roughly aligned relative to each other as provided, and can subsequently be twisted, bent or tilted relative to each other in such a way that the profiled elements are connected with each other at least in a form-fitting manner by the latching mechanism. The profiled elements can here also be reversibly or elastically deformed in parts, so as to enable the latching.
In another embodiment, the latching mechanism has a first hook of the first profiled element, a second hook of the second profiled element, at least one first transverse web of the first profiled element and at least one second transverse web of the second profiled element, wherein the first hook and second hook are configured to intermesh, and wherein the first transverse web and second transverse web are configured to fix the first hook and second hook in their intermeshing position.
The hooks are here arranged relative to each other and spaced apart from the transverse webs in such a way that, in the assembled state of the profiled plastic section, the intermeshing hooks are held in their position relative to the width direction of the profiled plastic section in a form-fitting manner, so that the profiled element can absorb in particular normal forces in the assembled state. Furthermore, the transverse webs make it possible to prevent relative displacement movements of the profiled elements in the width direction. The transverse webs thus serve as a counter bearing to the hooks in the width direction of the profiled plastic section in its assembled state. Furthermore, the intermeshing hooks and the sliding element formed jointly by the profiled elements ensure that the intermeshing hooks remain held together in a form-fitting manner relative to the height direction of the profiled plastic section, wherein the height direction runs perpendicular to the width direction and perpendicular to the longitudinal direction of the profiled element, so that the profiled element can absorb in particular transverse forces in the width direction in the assembled state. In particular, the hooks can be arranged relative to each other and be spaced apart from the transverse webs in such a way that, in the assembled state of the profiled plastic section, the intermeshing hooks are jammed against each other, i.e., are also fixed in place by traction, thereby enabling an especially secure hold of the assembled profiled plastic section. Furthermore, the hooks and transverse webs can ensure that at least one cavity arises between the profiled elements in the assembled state of the profiled plastic section.
The first hook and second hook form a first interacting hook pair. The first transverse web and second transverse web form a second interacting transverse web pair. In particular, the hook pair and transverse web pair can protrude from a surface of the first profiled element or the second profiled element in such a way as to interact in the assembled state of the profiled plastic section. The hook pair and transverse web pair preferably run in the width direction spaced apart from each other and parallel to each other. Another transverse web pair (another first or a third transverse web and another second or a fourth transverse web) are especially preferably provided, which adjacently spaced apart from the first transverse web pair preferably runs in the width direction spaced apart from the first transverse web pair and parallel to the first transverse web pair. It is likewise preferred that the hooks and transverse webs each run along the entire first profiled element and the second profiled element relative to the longitudinal axis of the profiled elements, and thus along the entire profiled plastic section when in the assembled state.
Another embodiment provides that the first profiled element and second profiled element can be rotated around the rotational axis of the joint in such a way that the first hook touches the second hook, and the first transverse web touches the second transverse web, wherein the hooks and/or transverse webs elastically deform when the first profiled element and second profiled element are guided out of an initial tilted position into the final interlocked position for generating the form-fitting connection, so that the hooks intermesh and are fixed in this position by the transverse webs. This embodiment allows the transverse webs to tension the hooks in their intermeshing position in the assembled state of the profiled plastic section, and also ensures a traction and form-fitting connection between the first profiled element and second profiled element
Furthermore, the hooks and/or transverse webs can be chamfered in such a way as to facilitate the form-fitting connection by tilting/turning the first profiled element and second profiled element during assembly.
Furthermore, the profiled plastic section can be box-shaped in the assembled state. In this conjunction, “box-shaped” can be understood in particular as meaning that the profiled elements together form at least one hollow chamber. The assembled profiled plastic section can essentially be cuboid, although this is not necessary. For example, the profiled plastic section can alternatively also have inclined side walls or an essentially trapezoidal cross section. Furthermore, the profiled plastic section need not be closed in its longitudinal direction. The box shape is already enabled on the one hand by the overlapping of the first profiled element and second profiled element, preferably over a large surface. For example, the first profiled element can further have an essentially L-shaped cross section, and the second profiled element can have an elbowed design. Its box-shaped structure gives the profiled plastic section an especially high stiffness and stability. The box structure is enhanced even further if a profiled element has not just one, but several connecting strips that only engage into a metal component. The box-shaped configuration is likewise strengthened by constructing the profiled plastic section out of more than just two profiled elements, with each of the profiled elements then having at least one connecting strip.
Another embodiment provides that the first profiled element and second profiled element form at least one hollow chamber. In particular, the at least one hollow chamber can arise between the hook pair and transverse pair in the assembled state of the profiled plastic section. Furthermore, this allows hollow chambers to come about between the first hook pair and contacting end sections of the profiled elements as well as between the (additional) transverse web pair and the joint in the assembled state of the profiled plastic section. Likewise, a hollow chamber can arise between the transverse web pair and additional transverse web pair in the assembled state of the profiled plastic section.
While the term transverse web pair does imply that only two transverse webs correspond, applications can also be described in which three or more transverse webs correspond, wherein this plurality of transverse webs then also satisfies the function of interlocking in the width direction.
In another embodiment, a profiled element can in itself already be integrally designed with one or more hollow chambers.
Before assembling the profiled elements into the profiled plastic section, accessible areas between the profiled elements can have introduced into them insulating means, e.g., insulating foam, in particular comprised of meso- or macroporous, closed- or open-celled materials, e.g., aerogel, polyurethane-, polyester-, polyolefin-, polyamide foams or foamed vinyl polymers. Alternatively or additionally, corresponding inner surfaces of the profiled elements, above all the transverse webs, can be provided with a coating or a film having an especially low emissivity ε. As a result, the heat transfer via thermal radiation within the profiled plastic section can be significantly reduced. In addition, the arising hollow chambers divide a larger cavity located between the profiled elements into several small hollow chambers. By comparison to the larger cavity between the profiled elements, the advantage to the several smaller hollow chambers is that a convection inside of the hollow chambers can be kept especially low. The size and arrangement of the individual hollow chambers, and hence the convection within the hollow chambers, can be easily and flexibly influenced by the arrangement of the hooks and transverse webs. Neither the hooks nor the transverse webs must here be situated in a geometric center between the longitudinal edges of the respective profiled elements.
Functional zones (flags, hooks, channels, etc.) optimized for the application can likewise be set up on the exterior sides of the profiled plastic section; the latter are frequently described and used in prior art.
Another embodiment advantageously provides that the first profiled element and second profiled element comprise a plurality of profiled projections, which have mutually corresponding contours with a saw tooth or zigzag shaped progression, hook elements, mushroom or ball elements for fastening the profiled elements with each other in the height direction and/or width direction. This embodiment permits an especially secure cohesion of the profiled elements with each other in the height direction of the profiled plastic section. Such profiled sections represent an extreme case according to the invention, in which the plurality of projections assume the functions of latching elements, transverse webs and sliding elements, or at least support these elements in their function.
Furthermore, the hooks can have an undercut design, so that they can hook into each other especially fixedly, and an especially secure cohesion can be ensured between the first profiled element and second profiled element in the height direction of the profiled plastic section.
Another embodiment provides that the first profiled element and/or second profiled element each taken by itself from at least one additional hollow chamber, making it possible to further improve the thermal properties of the profiled plastic section.
Another embodiment provides that at least one of the transverse webs be at least partially provided with an infrared-reflecting coating. The coating preferably comprises a metallized film or a metallized foam strip. The use of an aluminum-containing film is especially preferred. Such coatings permit an especially low level of emissivity ε.
In addition, it can advantageously be provided that the profiled plastic section further comprise at least one third profiled element, which is configured to be fixedly connected with a metal component, wherein the second profiled element is connected with the first profiled element and with the third profiled element in a shear-free manner in the longitudinal direction of the profiled plastic section. For example, the second profiled element can be arranged between the first profiled element and third profiled element, wherein the three profiled elements can each be separately connected with a profiled metal section in a shear-resistant manner. The second profiled element can here be connected in a shear-free manner with the first profiled element and with the third profiled element in the longitudinal direction of the profiled plastic section, i.e., the second profiled element can be moved in the longitudinal direction of the profiled plastic section relative to the first profiled element and relative to the third profiled element if the three profiled elements in themselves are connected with the profiled metal sections in a shear-resistant manner viewed in the longitudinal direction. Providing three or more profiled elements enables an especially high configuration of the profiled section in the height direction, wherein the assembled profiled plastic section can assume the function of two individual profiled plastic sections in a plastic/metal composite profiled section, and permits additional static advantages due to optional braces. For example, a second profiled element arranged between the first profiled element and second profiled element can have two connecting strips, and the other two profiled elements can each have a connecting strip. The profiled plastic section according to this embodiment is easier to handle than two individual profiled plastic sections. Likewise, the profiled section statics are advantageous for mechanically demanding final applications.
In a second aspect of the invention, a metal/plastic composite profiled section comprises a profiled plastic section described in conjunction with the first aspect of the invention, a first metal component and a second metal component, wherein the first metal component is preferably connected in a shear-resistant manner with the first profiled element, and wherein the second metal component is preferably connected in a shear-resistant manner with the second profiled element. To avoid repetition, reference will be made to the statements in conjunction with the profiled plastic section according to the first aspect of the invention with respect to advantageous embodiments, effects and advantages of the metal/plastic composite profiled section. Additional profiled elements can likewise be present, which are connected with other profiled elements in a shear-free manner to yield a box-shaped profiled plastic section, and are each connected with one of the two metal components in a shear-resistant manner.
In a third aspect of the invention, a frame for a window, door or a facade element comprises a metal/plastic composite profiled section according to the second aspect of the invention.
Exemplary embodiments of the invention will be explained in more detail below based on the schematic drawing. Shown here on:
The first profiled element 2 comprises a first hook 4, a first transverse web 5, a second transverse web 6 along with a groove 8, a trough-shaped groove 8 in the exemplary embodiment shown. The second profiled element 2 comprises a second hook 9, a third transverse web 10, a fourth transverse web 11 along with a sliding lug 12, a rounded sliding lug 12 in the exemplary embodiment shown. The hooks 4, 9 and transverse webs 5, 6 and 10, 11 stick out perpendicularly from facing inner surfaces of the profiled elements 2, 3, and essentially run parallel to the height axis y when the profiled plastic section 1 is assembled.
For example, the profiled plastic section 1 or its profiled elements 2, 3 can be made out of the material “TECATHERM®66 GF” of the applicant, a plastic that is based on a black polyamide and comprises 25% w/w glass fibers. This material is characterized in particular by its good suitability for the intended application. It is further perfectly suitable for manufacturing hollow chamber profiled sections with thin walls, for powder coatings and anodizing in a composite.
The groove 8 and sliding lug 12 together comprise a sliding arrangement in the form of a loose hinge or a loose swivel joint 13 with a rotational axis 14. As depicted on
In the twisting position of the profiled elements 2, 3 relative to each other shown on
As evident from
The form-fitting connection produced by the hooks 4, 9 and transverse webs 6, 10 and 6, 11 acts parallel to the width axis x, and allows the assembled profiled plastic section 1 to be able to absorb tensile and compressive forces parallel to the width axis x. Furthermore, the hooks 4, 9 and the pivot joint 13 or its groove 8 and sliding lug 12 produce another form-fitting connection, which acts parallel to the height direction y, and allows the assembled profiled plastic section 1 to be able to absorb tensile and compressive forces parallel to the height axis y.
The tractive connection generated by the hooks 4, 9 and transverse webs 5, 10 and 6, 11 is produced by spacing the hooks 4, 9 and transverse webs 5, 10 apart from each other—in “undersized” fashion, so to speak—in the assembled state of the profiled plastic section 1 in such a way that they tension each other. In other words, the transverse webs 5, 10 serve as a tensioning counter bearing for the hooks 4, 9 and vice versa. In particular, the tractive connection acts parallel to the height axis y as a frictional connection, so that the profiled elements 2, 3 are impeded from once again moving out of their twisting position relative to each other shown on
In order to generate the elastic deformation of hooks 4, 9 and transverse webs 5, 6 and 10, 11, an elevated expenditure of force or an elevated torque is required, for example which can be provided by exerting a compressive force F1, e.g., which acts perpendicular to an outer surface 43 of the first profiled element 2 and, according to
In the position shown on
Furthermore, the first profiled element 2 forms a first one-part connecting strip 27 on its longitudinal edge shown on the right of
In the exemplary embodiment shown on
In the position shown on
The box-shaped structure of the profiled plastic section 2 gives it a high stiffness and stability. Furthermore, insulating foams can be introduced into the hollow chambers 37 to 40, so as to enable an especially low heat transition coefficient Ur of the metal/plastic composite profiled section 31. As an alternative to introducing insulating foams, an infrared radiation-reflecting, so-called “low-E film” can be applied to the side walls of the transverse webs or hook elements in particular in the area of the hollow chambers 37 to 40, e.g., an “insulbar® LEF” film of the applicant, wherein “low-e” stands for an especially low degree of emissivity ε.
As a result of the form-fitting connection between the first profiled element 2 and second profiled element 3, the profiled elements 2, 3 cannot be moved relative to each other parallel to the width axis x and parallel to the height axis y. In particular forces acting parallel to the width axis x on the first profiled element 2 and second profiled element 3 can thus be absorbed to an especially high extent by the profiled plastic section 1. The cohesion of the profiled plastic section 1 is further increased and its stability elevated by virtue of the fact that the profiled elements overlap over a large-surface, are hooked together by the hooks 4, 9 and tensioned by the transverse webs 5, 10 and 6, 11. As a consequence, in particular even forces acting parallel to the height taxis y on the first profiled element 2 and the second profiled element 3 can be absorbed to an especially high extent by the profiled plastic section 1.
By contrast, the profiled elements 2, 3 can move parallel to the longitudinal axis z relative to each other. In particular, the contact surfaces 41, 42, hooks 4, 9, transverse webs 5, 10 and 6, 11 and groove 8 and sliding lug 12 of the profiled elements 2, 3 can slide parallel to the longitudinal axis along each other. As a result, a relative movement of the profiled elements 2, 3 in the longitudinal direction can offset various longitudinal expansions of the first profiled element 2 and second profiled element 3 or longitudinal expansions of the profiled metal sections 29, 30 connected with the profiled elements 2, 3 in a shear-resistant manner.
As described in conjunction with
As depicted on
In the exemplary embodiments according to
As the case with
The second profiled element 3 further has a wider sliding lug 12b, which is angularly arranged, runs in the height direction y, and can be inserted into another corresponding groove 8b of the third profiled element 3b (
The profiled elements 2 and 3 according to
Lges=LE1+LE2+LD.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102016119580.4 | Oct 2016 | DE | national |
This application is a continuation of U.S. Application Ser. No. 16/338,979, filed on Apr. 2, 2019, and entitled “Profiled Plastic Section for a Metal/Plastic Composite Profiled Section”, which is the U.S. national stage entry of International Application PCT/IB2017/056315, filed Oct. 12, 2017, which claims benefit of German Application 102016119580.4, filed Oct. 13, 2016, all of which are incorporated herein in their entirety by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 16338979 | Apr 2019 | US |
| Child | 17858534 | US |
