DE3417375A1 - Ventilated or sound-engineered wall element and process for the production thereof - Google Patents

Abstract

A description is given of a ventilated or sound-engineered wall element (28) having two sheet-metal coverings (4, 6), connected to each other at opposite edges, and filling material (8) enclosed between said sheet-metal coverings. In the case of this wall element, the sheet-metal coverings are profiled, so as to engage in each other at the edges in question, in order to be connected to each other solely by being pushed into each other from the end of the profiling or by catching in each other. A clamping strip (26), subsequently inserted from the side when the coverings have been pushed into one another, can effect a mutual fixing of the two sheet-metal coverings (4, 6) and a continuous connection of successive wall elements (28) of this type. The wall elements can be connected flush against one another in order thus to form a virtually continuous, smooth surface without inserting cover mouldings or the like. <IMAGE>

Description

Air or acoustical wall element and process for its manufacture

The invention relates to an air or acoustical wall element according to the preamble of claim 1 and a method for its production.

In the case of such wall elements it is customary, among other things, to connect the two sheet metal covers twice, i.e. initially to one another and then to weld or rivet edges thereof angled outwards. Another possibility is to weld in or rivet separate U-profiles. Both ways of connection are complex and correspondingly expensive. In addition, the outwardly protruding edge sections require special ones Covering measures, for example in the form of inlaid cover strips, to ensure continuous heat and sound insulation and to create wall space if necessary.

In another case, the wall elements are on opposite sides Edges appropriately profiled to match one another, essentially in the manner of tongue and groove boards To be able to be pushed into one another flush, but here the sheet metal covers on both sides are only held together by the filling material, a rigid foam, while such a rigid foam, however, is flammable and is therefore impermissible for many applications.

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The invention is therefore based on the object To design wall element of the generic type in such a way that it can be connected without its own mechanical connection process, e.g. Welding or riveting, is easier and cheaper to manufacture and that also successive such Wall elements can be connected directly to one another without cover strips or the like inserted in between.

This object is achieved by the characterizing features of claim 1.

The edge profiling in question makes it possible for the two For example, sheet metal covers can be connected to one another simply by sliding them into one another from one end. A corresponding manufacturing process forms the subject of claim 8. Because of the lack of protruding outward Edge sections can follow successive wall elements of the invention directly and flush with one another. In this way, there is no need for special joints at the joints Covering measures without impairing heat or sound insulation or absorption.

The subclaims indicate advantageous design options. So can by inserting a terminal strip according to claims 4, 5, 6 or 9 in addition to a subsequent fixation of the previously nested without constraint Sheet metal covers a mutual connection of successive wall elements over the entire length of the concerned fenden edges can be reached, which in turn can be joined together like tongue-and-groove boards. These Connection is also not done through the flanges of U-profiles or U-profiles serving as receptacles for the wall elements the like. disabled. On the other hand, the beads can

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Wall elements closing one another according to claim 7, if necessary, accommodate a sealing insert between them, as it can of course also be used as a piping strip or the like. Otherwise, of course.
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Wall elements according to the invention can also be vertical as used in a horizontal arrangement, e.g. air chambers of air conditioning systems, soundproofed or soundproofed To form spaces and the like. 10

The following are exemplary embodiments of the invention described in more detail with reference to the figures. It shows

1 shows a cross section through a wall element according to the invention as a heat-insulating ventilation wall element (middle section broken away),

2 shows an enlarged cross-section through the edge portions of two mutually adjoining edge parts that are connected to one another wall elements according to the invention as sound-absorbing Wall elements and

3 shows a similar cross section of abutting edge portions of another embodiment.

The wall element 2 shown in Fig. 1 has in the usual way two sheet metal covers 4 and 6 and one in between introduced filler material, for example in the form of rock wool. In contrast to the conventional one Execution, however, are the two edges provided for the mutual connection of the sheet metal covers Sheet metal covers 4 and 6 correspondingly profiled to interlock positively. To be more precise, the wise ones

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relevant edges 10 of the sheet metal cover 4 each according to Type of a U-profile two consecutive bends 12 and 14 in such a way that the last section or leg 16 of the U-profile at about half the wall thickness a of the wall element is bent inward, while the corresponding edges 18 of the sheet metal cover 6 in connection with a similar U-profile 20 is approximately hairpin-shaped have outwardly bent back last edge portion 22, which together with the previous last portion or the leg 24 of the U-profile the inwardly bent last edge section 16 of the sheet metal cover 2 encloses. In this way, the two sheet metal covers 4 and 6 are locked together. The profiles on each sheet metal cover, for example by folding or - in a single operation - separated by rollers produced and the two sheet metal covers are then pushed into one another from the end of the profile.

In order to make the nesting as free as possible To be able to, it is recommended to use the hairpin-shaped profile section with the two edge sections 22 and 24 correspondingly wide and a clamp (if necessary) only through a laterally knocked in or pressed in terminal strip between sections 16 and 22 26 as shown.

As can also be seen in FIG. 1, the terminal strip 26 expediently has a width b which is approximately twice that Width c of the edge portion 16 corresponds, so that it is with half of its width laterally over the relevant Wall element emerges, and such a terminal strip is only considered in terms of manufacture on one of the two standing sides inserted into the wall element. To this

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Way arises between successive such Wall elements a kind of tongue and groove connection.

Fig. 2 shows the connection in question between two adjoining Wall elements 28. As can be seen, one and the same terminal strip 26 protrudes into the two-sided hairpin-shaped Profile sections into it, which in addition to the described clamping function also has a continuous creates a firm connection of the abutting wall elements. These wall elements can fit together well, so that there are cover strips inserted in between or other covering measures as well as special No need for connection measures. The successive Wall elements only need to be inserted into U-profiles fixed in place as a receptacle and with the appropriate pressure to be pushed against each other. In this way, in addition to the low manufacturing cost, a save a considerable amount of assembly time and effort.

The wall elements 28 from FIG. 2 differ from the wall element 2 from FIG. 1 only in that they are are sound-absorbing wall elements. Accordingly, these wall elements have the usual way in one of the two sheet metal covers, here 6, a perforation 30 and a fleece 32 or the like lying behind it Trickle protection for the filling material 8.

In Fig. 3, another embodiment is more contiguous Wall elements 34 are shown which otherwise correspond to those from FIG. 1. Here are the two sheet metal covers, 36 and 38, on their uniquely angled edges 40 and 42, respectively, provided with beads 44 and 46 that fit into one another, with which they press on the two main wall surfaces

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can be brought into engagement with one another in the direction of arrows 48 and 50. They are prevented from unintentional loosening of the connection by the stationary receiving profiles.
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To facilitate the integration, you can refer to the Corrugations 44 of the sheet metal cover 36, as shown, are still short funnel-like towards the end of the angled edge portions 52 Connect bends 54, while the angled edge portions 56 of the sheet metal cover 38 with the relevant Beads 46 end. Furthermore, the figure shows how the beads 46 of the wall elements 34 that adjoin one another a - generally elastic - sealing insert 58, such as an asbestos cord, to be placed between them. take ability.

If necessary, stiffeners, for example in Form of beads embossed in the main surfaces of the sheet metal covers. On the other hand, for same purpose as also to stabilize the wall element in addition to the filling material 8 plasterboard or Like. Be inserted into the wall element.

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Claims (9)

BOETERC, BAUER uPÄRTN £ H ΡΑϊΕΝΤΑΝνν &.τ; Γ O / 1 7O7 C EUROPEAN PATENT ATTORNEYS OH I / O / THOMAS-WIMMER-RING 14 D-8000 MUNICH 22 3858 Patent claims: 1. Air or acoustical wall element (2; 28; 36) with two on opposite, correspondingly angled Edges (10, 18; 40, 42) interconnected sheet metal covers (4, 6; 36, 38) and enclosed therebetween Filling material (8), characterized in that the relevant edges (10, 18; 40, 42) inside the Wall elements (2; 28; 36) interlock in a form-fitting manner in such a way that, on the one hand, they establish the connection themselves and on the other hand, hold the two sheet metal covers (4, 6; 36, 38) in a predetermined mutual position. 2. Wall element according to claim 1, characterized in that connected to one another in pairs Edges (10, 18) of the two sheet metal covers (4, 6) each one (10) in the manner of a U-profile double and the other (18) is angled three times so that it is together with the last section (24) of a U-shaped Profile section (20) and a laterally adjoining it, the last bent back roughly in the shape of a hairpin Edge section (22) encloses the last section (16) of the U-profile of the first edge (10). 3. Wall element according to claim 2, characterized in that the U-profile-shaped sections (e.g. 20) of both interconnected edges (10, 18) are approximately the same width. -2- 4. Wall element according to claim 2 or 3, characterized in that between the hairpin-shaped outwardly bent back and the enclosed edge section (22 or 16) one - preferably also off Existing sheet metal - terminal strip (26) is inserted. 5. Wall element according to claim 4, characterized in that the terminal strip (26) as a connecting element to a subsequent wall element (2, 28) or the like. About half of its width (b) over that equipped wall element (2, 28) protrudes. 6. Wall element according to claim 5, characterized in that a terminal strip (26) manufacturing is used only moderately on one of the two possible edges. 7. Wall element according to claim 1, characterized in that the pairs interconnected Edges (40, 42) of both sheet metal covers (36, 38) are unique bends with mutually fitting one another provided therein and beads (44, 46) which can be locked to one another. 8. A method for producing a wall element (2, 28) according to any one of claims 1-6, characterized in that the two sheet metal covers (4, 6) cut and their edges (10, 18) are profiled by folding and / or rolling and that then - before or after the filling material (8) has been introduced - the sheet metal covers (4, 6) prepared in this way with their profiled ones Edges (10, 18) are pushed into one another from the end thereof. -3- 9. The method according to claim 8 for producing a wall element (2, 28) according to claim 4, characterized in that the clamping strip (26) after they have been pushed into one another of the two sheet metal covers (4, 6) pressed laterally or hammered into the relevant edge will.