NO129702B - - Google Patents

Description

Devices for combined construction

element as well as the method for its development

score.

The present invention relates to a construction element assembled from at least two sub-elements, e.g. profiles, mutually connected by means of the sub-elements arranged longitudinally

edge flange parts which directly, or via auxiliary elements, are in engagement with each other, and where the connection between the sub-elements is affected by a filler filling a cavity.

Such a construction element is known according to

US-PS 3 156 332, for example in the form of a frame structure for

a window. The frame construction is assembled from two U-metal pro-

files. Both legs of the U-metal profile are provided with inward facing

the edges or undercuts and connected to each other by means of a hard insulation profile that grips behind the undercuts. In the sun-

sion profile must prevent heat transfer between both metal profiles. To further improve the thermal insulation, the cavity enclosed by the two metal profiles is filled with a foam

with filling material. in addition to thermal insulation, the filling material has

gene additional function.

In the aforementioned US patent, it is expressly pointed out that the insulation profile can easily be inserted between the metal profiles and can easily be pulled out from there again (column 4, lines 36-38 of the US patent). Obviously, a mutual displacement of the composite metal profiles must be prevented by the fact that the corresponding parts of the window frame construction are joined at the final assembly to form 90° corner angles. However, such a solution is not satisfactory, on the one hand, the metal profiles that are not attached to each other are prone to rattle even in assembled state and on

on the other hand, the composition of the individual side parts in the frame construction is expensive and time-consuming if the metal profiles either already before the composition, e.g. during re-storage or during transport, has shifted or is shifting during assembly.

One has therefore already gone ahead to fix the metal profiles according to the composition against displacement. However, the other solutions have the disadvantage that the production becomes expensive or

laughs that the thermal insulation becomes unsatisfactory.

The purpose of the invention is therefore to design a construction element of the type already described, so that the sub-elements, e.g. the profiles, are fixed against each other so that the disadvantages of the known solutions are avoided.

Based on the structural element already described, the invention consists in the fact that, in the assembled state, the approximately parallel, mutually opposite side surfaces of the sub-elements, alone or together with the auxiliary elements, delimit the cavity which is filled by the filling mass, whereby the sub-elements of the filling mass are pressed from each

others to a predetermined mutual distance where the connection between

lom the sub-elements are subjected to tensile stress by pressing the edge flange parts of the sub-elements against each other or against corresponding edge flange pairs

acts on the auxiliary elements so that a friction lock is formed which secures the sub-elements against mutual displacement.

The teaching according to the invention applies quite generally

for a structural element composed of at least two sub-elements.

It is based on a combination of a tensile connection where the sub-elements are prevented from moving apart, e.g. by means of abutments, and a filler that seeks to press the sub-elements apart.

The teaching according to the invention applies in particular to

such construction elements whose sub-elements are designed from metal profiles for windows, doors and the like. In this case, the auxiliary elements for making the tension connection can be designed as connection profile rails, such as e.g. present a double T-profile, a double T-profile with a nose, a U-profile, a U-profile with a nose or a similar profile and which are pushed into undercut grooves in the metal profiles. The connecting ice profile rails are sized appropriately so that they have a playroom on all sides in the undercut grooves, so that they can be easily pushed into the grooves. This leeway enables, like frame construction,

tion according to us patent 3 156 332 a light assembly, imid-

At the same time, the disadvantages of a displaceability of the metal profile are eliminated

according to composition, as the filler according to the invention

then push the metal profiles apart so much that the double-

te T-profiles are loaded in tension and the corresponding parts of the double-T-profile and the metal profile thereby remain fixed against each other, forming a friction lock. The aforementioned play-

however, space does not only have the advantage of facilitating assembly,

but also enables air to flow out of the cavity when the filler expands. However, an outflow of the filler material out through the joints formed by the clearance does not occur, as the filler material, due to its increase in volume, also penetrates into the joints and hardens there.

The connecting profile rails can e.g. be produced

of a heat-insulating, rigid material, preferably hard plastic,

while a foamable material is used as a filler, the volume of which, after being introduced into the cavity, is increased by means of heat

seal or other activation.

The advantages of the invention are especially clearly visible

in the special case where the parts are metal profiles, e.g.

e.g. for windows, doors and the like, and are connected to each other by means of connection profile rails and held apart by introduced hard foam material.

Mechanically, the advantages are achieved by the metal profiles connecting

des to an absolutely rigid body, e.g. to part of a window

frame.

Thermally, the advantage is achieved by the fact that the largest part of the con-

the structural element's cross-section is taken up by the outstanding insulation

hard foam material, while they do not insulate quite as well

the connecting profile rails only occupy a very small cross-section compared to the hard foam material.

Incidentally, it is not necessary that the sub-elements connect

with each other by means of inward-facing edges, undercuts, T-steps and the like arranged on these. It is e.g. also possible to provide elastic connecting parts on at least one of the part elements

the parts that correspond to connection parts on at least one other part element, in order to provide a connection that prevents the part elements from falling apart, in that the said connection parts

laughs are smeared into each other. The filling mass also has here the

hold until the invention achieved function.

The invention also includes a method for producing construction elements of the type described above from two sub-elements and a foamable filling compound, as the sub-elements

the ments are prevented from falling apart by being connected to each other by a tension connection.

The method according to the invention characterizes

res in that at least one of the sub-elements on the side that delimits the cavity is coated with a foamable filling compound and that the tensile joint is created at the same time as or after the coating, but before or during the volume increase of the filling compound.

The method according to the invention occurs

particularly advantageous when the sub-elements are designed from oblong profiles which for connection (tensile connection) are displaced in

hold to each other in the longitudinal direction, whereby they engage directly with each other either at inward-facing edges, under-

cuts and the like, or by correspondingly profiled auxiliary elements. In this case, in the same workflow, at least one of the pro-

the files are passed past a sink box to receive the filling material. The longitudinal joints between the profiles close tightly after the volume increase of the filler.

The following will be examples of embodiments of the invention

be described with reference to the accompanying drawing, where:

Fig. 1 is a section through two sub-elements connected with each

others according to the invention.

Fig. 2, 3 and 4 are partial sections of sub-elements connected with each

re according to the invention by means of different designed profile rails„

Fig. 5 is a section through two others according to the invention

interconnected sub-elements.

Fig. 6 is a perspective view for illustrating the method according to the invention for producing a profile body from two metal profile rails.

The invention must first be explained with reference to

fig. 1» The two sub-elements are here formed by two metal profile rails 1,2. The two metal profile rails 1,2 are both provided with undercut grooves. In the undercut grooves, two connecting profile rails 3,4, which consist of hard plastic or hard rubber, engage. The connecting profile rails have a double T-profile. The connecting profile rails 3,4 and the undercut grooves in the metal profile rails 1,2 are dimensioned such that the metal profile rails have a play in the undercut grooves. The cavity 5 enclosed in the two metal profile rails 1,2 is filled with a hard foam material 6. The hard foam material has developed in this cavity from a liquid output product during volume increase. Thereby, the hard foam material 6 in the cavity 5 has assumed the largest possible volume. This means that the two metal profile rails 1,2 are pressed apart using the hard foam material as far as the clearance allows. Both connecting profile rails are thereby subjected to tensile stress. Considering e.g. the connection profile rails 4, then you will see

that, due to the tensile stress, with its inward-facing edges rest against the undercuts 7,8,9,10 in the corresponding undercut groove. In these places, there are friction locks which do not allow a displacement of the metal profile rails 1,2 in the longitudinal direction of the rails. The metal profile rails 1,2 cannot move in other directions either, as they rather form a rigid body.

From the air gaps 11,12 between the metal profile rails and the connection profile rails, it will be understood that the connection profile rails will be able to be pushed very easily into the grooves as a result of the already mentioned dimensioning. The structural element formed by the two metal profile rails 1,2 is distinguished, e.g. in that the two metal profile rails are exceptionally well insulated against each other against heat transfer. The largest part of the cross-section is taken up by the hard foam material 6, which is a very poor conductor of heat. The connection profile rails 3,4 do indeed have somewhat poorer thermal insulation properties, but therefore their share of the total cross-section is also very small.

Both metal profile rails can e.g. in somewhat altered form,

as can be seen from fig. 6, are used as frame or frame parts for a metal window. With metal windows, a very good one is required

insulation between the cold exterior in winter and the

heated rooms warm inside.

According to the invention, it is essential that the simple

te side parts of the frame or frame always consist of metal profile

rails which are rigidly connected to each other and which are preferably thermally insulated from each other. The rigid connection is external

most important for a simple and rational assembly of the four side

parts for a frame or frame.

Three other possibilities for designing metal profile skins-

The rails and connecting rails are shown in examples 2, 3 and 4. The profile

of the connection profile rail in fig. 2 is designated as double T-profile with nose. The profile of the connection profile rail in fig.

3 is designated as U-profile. The profile of the connection profile skin-

nen in fig. 4 is designated as U-profile with nose. Many other pro-

files for connection profile rails are conceivable.

In fig. 5 shows what a plastic profile rail 13 is like

connected with a metal profile rail 14 to a fixed structural

element. The material in the plastic profile rail 13 is elastic. Plastic-

the profile rail 13 has two elastic connection parts 31,32

with grooves 15,16 in which two inward-facing edges 17,18 engage

of the metal profile rail 14. Of this the plastic profile rail 13 and me-

cavity 33 surrounding the number profile rail 14 is also here filled with a hard foam material 19 which presses the plastic profile rail 13 and

the metal profile rail 14 so far apart that they face inwards

end edges 17,18 lie close to the undercut grooves 15 and

16. In this way, a friction lock occurs which prevents a

pushing the plastic profile rail 13 in relation to the metal profile

the rail 14. The joining of the plastic profile rail 13 and metal

the profile rail 14 can either be done by pushing in the inward

facing edges 17,18 in the generously sized grooves 15,16,

but it is also possible to bend the corresponding leg on plastic pro-

the file rail 13 so that a snappert form is formed over the entire length

binder see.

In fig. 6 shows how two metal profile rails 22,23

in a rational way are joined into a rigid structural element. The metal profile rail 23 is held firmly in place. In those correspondent-

the undercut grooves in the metal profile rail 23 are connecting profiles

rails 24,25 already pushed in. The insertion of the connection profile rails 24, 25 is particularly easy, as the connection profile rails have clearance on all sides in the grooves. The metal profile rail 22 is then displaced in the direction of the arrow in relation to the metal profile rail 23, whereby the connection profile rails 24,25 are also pushed into the grooves in the metal profile rail 23. A viscous liquid 27 flows out from a similarly fixed sinker box 26

which flows out into the cavity 28 which is delimited by the metal profile rail's 22 parts. The liquid 27 is the starting product for a hard foam material which after a period of time under heat supply or other activation joins the cavity 28 which is enclosed by the two metal profile rails 22,23. The hard foam material pushes the two metal profile rails 22,23 apart and seals the remaining joints. Above the supply 29, the sinking box 26 is supplied with the starting material for the foam material and above the supplies 30, compressed air is supplied.

Those in fig. 5 shown elements 13,14 do not have to be profile rails, but can also be disk-shaped elements whereby the same connection mechanism is used.

Claims (8)

1. Construction element made up of at least two parts ments, e.g. profiles, mutually connected by means of longitudinal edge flange sections arranged on the sub-elements which directly, or via auxiliary elements, are in engagement with each other, and where the connection between the sub-elements is affected by a filler filling in a cavity, characterized in that the sub-elements (1,2; 13, 14} 22,23) in the assembled state approximately parallel, mutually opposite side surfaces alone or together with the auxiliary elements (3,4j 24,25) delimit the cavity (5) which is filled by the filling mass (6,19,27), whereby the sub-elements of the filling mass are pressed from each other to a predetermined mutual distance, where the connection between the sub-elements is subjected to tensile stress by pressing the edge flange parts (7,8,9,10,17,18,20,21) of the sub-elements against each other or against corresponding edge flange parts on the auxiliary elements so that a friction lock is formed which ensures the sub-elements against mutual displacement. 2. Construction element as specified in claim 1, characterized in that the auxiliary elements are formed by connecting profile rails with inward-facing edges or undercuts designed as e.g. double T-profile (3,4-, 24,25), double T-profile with nose (fig. 2), U-profile (fig. 3), U-profile with nose (fig. 4) or similar profiles, which are pushed into undercut grooves in the sub-elements (1,2; 22,23). 3„ Construction element as stated in claim 2, characterized in that the connection profile rails are dimensioned in such a way that they have clearance on all sides in the undercut grooves and can be easily pushed into the grooves. 4. Construction element as stated in claim 2-3, where the sub-elements are designed! such as metal profiles for windows, doors and the like, characterized in that the auxiliary elements are made of a heat-insulating, rigid material, preferably hard plastic. 5. Construction element as specified in claim 1, characterized in that at least one sub-element (14) is provided with elastic connection parts (17,18) which correspond to connection parts (31,32) on at least one other sub-element (13) so that the sub-elements (13) ,14) are connected to each other by sliding the connection parts (31,32; 17,18) into each other. 6. Construction element as specified in claims 1-5, characterized in that a filler (6, 19, 27) is used, e.g. a foam charge, which after a period of time under heat supply or other activation after introduction into the cavity (5,18,28) increases its volume. 7. Method for producing a construction element as stated in claims 1 - 6, of at least two sub-elements and a foamable filling compound, where the sub-elements are connected to each other by a tension connection and delimit a cavity which is filled by the filling compound, characterized in that at least one of the sub-elements (1 ,2; 13,14; 22,23) on the side that delimits the cavity (5,18,28), is coated with a foamable filling compound (6,19,27) and that the tensile joint is produced at the same time as or after the coating, but before or during the filler's volume increase. 8. Method as specified in claim 7 with elongated profile rails designed partial elements which are displaced in relation to each other in the longitudinal direction for connection, whereby they engage directly with each other either at inward-facing edges, undercuts and the like, or at correspondingly profiled auxiliary elements, characterized in that in the same work step, one of the profile rails (22,23) is passed under a countersinking box (26) for coating the profile rail (22) with filling compound (27) or that a countersinking box (26) is passed over this profile rail (22) for coating the profile rail with the filling compound and that the longitudinal joints between the profiles (22,23) close tightly due to the pressure created by the increase in volume of the filler (27).