EP0004359A2 - Thermally insulating profiled member - Google Patents

Abstract

1. Heat-insulating sectional member, more especially to be used for door frames or window frames or the like, consisting of two sectional rails (1, 2) of metal, more especially those of aluminium, which are interconnected by two sectional connecting strips (6, 7) consisting of heat-insulating material, the connecting strips (6, 7) being anchored in undercut channels (5) of the sectional rails (1, 2) with securing strips (8) of a deformable material, characterised in that the securing strips (8) consist of soft aluminium and are swaged or indented continuously or at intervals throughout their length.

Description

The invention relates to a heat-insulating profile body, in particular for use in door or window frames or the like, consisting of two profile rails, preferably those made of metal, which are connected to one another by two profiled connecting strips made of heat-insulating material, the connecting strips being anchored in undercut grooves in the profile rails are.

It is known to anchor the connecting strips in the grooves by using adhesives. However, the production of such profile bodies is very labor intensive.

It is also known to dimension the connecting lines so that they can be inserted into the undercut grooves with all-round play. The locking then takes place in that a cavity enclosed by the connecting strips and profile rails is filled with foam which expands before solidification and which presses the profile rails and connecting strips into their fitting position. At the junctures between the Profile rails and connecting strips then create a frictional connection which prevents mutual displacement. The foam mass also acts as an adhesive. Profiled bodies produced by this process have excellent properties, but high production costs are required for the production.

It is also known to also insert the plastic strips with play into the grooves and then to bend a web of the relevant rail forming a groove wall in such a way that it is pressed laterally against the connecting strip. With this method, however, the metal of the profile rails must be relatively soft and have a high wall thickness. This makes the profile body relatively heavy and expensive. If the heat-insulating material used for the connecting strips, for which plastic is generally used, is not flexible enough, the pressure force of the metal webs pressing against the profiled strips also decreases over time. As a result, the rigidity of the profile body is lost over time, i.e. he is getting shaky.

Finally, it is also known to manufacture the plastic strips as two-part special constructions. One part is first hooked into the undercut grooves of the profile rails, the other part is wedge-shaped and after assembly is pressed into the first part (not into the undercut grooves) to spread the first part, whereby the profile body is locked in itself . Profile body produced in this way However, because of the two-part special profiles, they are expensive in terms of both material costs and assembly costs.

The invention has for its object to design a heat-insulating profile body of the type described above so that it avoids the disadvantages mentioned above.

The object is achieved in that the connecting strips are anchored in the undercut grooves with additional fastening elements, preferably those made of metal.

In contrast to the latter known profile body with the two-part connecting strips, the additional fastening elements are effective directly in the area of the undercut grooves, i.e. they are directly involved in the anchoring.

Metal as a material for the additional fastening elements has the advantage that it can be processed in a simpler manner in some cases, but in any case in a more varied manner than the heat-insulating materials, such as plastic, which are normally used. It's also harder. By combining additional fastening elements made of metal and connecting strips made of heat-insulating material, optimal introduction of force from the additional fastening elements into the profiled rails on the one hand and into the connecting strips on the other hand can be achieved due to the aforementioned properties.

The profile body produced according to the teaching of the invention also have the advantage that the cavity enclosed by the profile rails and connecting strips can - if desired - still be foamed in the known manner, the additional fastening elements being able to be designed in such a way that they correspond to the expanding foam mass also allow entry into the undercut grooves.

A first practical embodiment of the invention can consist in that the connecting strips are deposited in the undercut grooves with locking strips made of a soft, deformable material, which have been widened by upsetting after assembly.

If the connecting strips - seen in profile section - have two parallel anchoring legs engaging in undercut grooves and a connecting leg connecting the anchoring legs (i.e. have a C-profile), then a further development of the first embodiment can consist in that each locking strip on the facing away from the respective anchoring leg Side of the connecting leg is inserted into the groove in question and is compressed continuously or at intervals along its edge facing the groove opening over its length.

Soft aluminum can preferably be used as the material for the locking strips.

The upsetting at intervals can take place, for example, by means of a gearwheel guided with pressure over the edge of the locking strip in question facing the groove opening. Locking strips opposite one another on an insulating strip can be compressed by means of two gearwheels running in parallel, which simultaneously press the profile rails to fit the distance.

A second embodiment of the invention can consist in that the additional fastening elements are wedge-shaped.

If the connecting strips - seen in profile section - have two parallel anchoring legs engaging in undercut grooves and a connecting leg connecting the anchoring legs (i.e. C-shape), then each wedge-shaped fastening element can be located on the side of the connecting leg facing away from the respective anchoring leg between the corresponding groove wall and the mentioned side of the connecting leg can be driven.

The wedge-shaped fastening elements can be formed by wedge strips extending over the entire length of the profile body. But it is also possible that they consist of a large number of wedges which are spaced apart over the length of the profile body. In the latter case, foam can enter the undercut grooves through the spaces between the wedges if foaming of the cavity enclosed by the profile rails and connecting strips is desired.

The wedge strips or individual wedges and / or the corresponding groove walls and / or the corresponding sides of the connecting limbs of the connecting strips can be provided with longitudinal grooves in order to fix the driven-in wedge.

The application of the invention is particularly advantageous in the event that the connecting strips consist - seen in profile section - of rectangular flat strips, preferably of layer material such as hard paper. This material is characterized by high strength, rigidity and heat resistance. It is also cheap. However, it has the disadvantage that it can only be profiled to a very limited extent. This material cannot be shaped or processed in such a way that it has suitable end thickenings for engaging in undercut grooves, as is possible, for example, with insulating strips which are extruded from plastic. This disadvantage is eliminated by using the teaching according to the invention in that the connecting strips are provided at their edges with recesses or holes in which the fastening elements can be anchored. The fasteners then take over the engagement in the undercut grooves and optimally direct the flow of force from the profile rails into the connecting strips and vice versa. The shape of the holes or recesses and their distance in the longitudinal direction of the connecting strips can be chosen so that an optimum is achieved for each special profile body with regard to the flow of force between the connecting strips and the profile rails.

Based on the aforementioned type of connecting strips and the arrangement of the fastening elements on them, a further embodiment can consist in that an undercut groove for receiving the fastening elements is provided in at least one of two on each profile rail and extends in the direction of the other profile rail Is webs and that one of the two webs is bent away from the other web before assembly and bent into an approximately parallel position to the other web after assembly.

It is also possible that undercut grooves are provided in each of the two webs and that the fastening elements extend into both grooves.

According to a third practical embodiment of the invention, the fastening elements can be formed by cylindrical pins inserted into round holes in the connecting strips.

The undercut grooves - seen in section - can have a profile that tapers conically towards the bottom of the groove, the diameter of the blunt cylindrical pins at the ends being approximately equal to the groove diameter at approximately half the groove depth. This choice of the diameter of the pins ensures that the pins press into the groove wall when the other web is pressed against the first-mentioned web after assembly.

It is also possible that the undercut grooves - seen in section - have a tapered profile against the bottom of the groove and that the cylindrical pins on their Ends to form at least three surfaces and cut edges at approximately the same angle as the grooves are pointed.

The pins should preferably be made of a harder material than the profile rails. If the profile rails are made of normal aluminum, the pins should be made of hard aluminum. The pins then press into the groove wall.

A fourth embodiment of the invention can, when applied to connecting strips, which - seen in profile section - are rectangular flat strips, consist in the fastening elements being formed by toothed strips, the teeth being inserted through holes in the connecting strips. Toothed strips have the advantage that they are quicker and easier to assemble.

The teeth can be rectangular or pointed at their front end. The holes in the connecting strips can be elongated in the longitudinal direction of the profile body and have an approximately rectangular cross section.

The parts of the teeth that protrude from the connecting bar can be bent or twisted.

If the undercut grooves are formed by one - in profile section - L-shaped and a straight web, both of which protrude towards the other profile rail, then the continuous part of the toothed strip can be provided on the side of the connecting strip facing the L-shaped web, while the bent or twisted parts of the teeth on the other side of the connecting bar are supported on the straight web. The bending or twisting of the parts of the teeth looking out of the connecting bar acts like riveting.

Connecting strips with toothed strips can be inserted into undercut grooves of the type described last in a simple manner in a tilted form and locked in place by erecting them. The locking is done by the mentioned support of the bent or twisted parts of the teeth on the straight webs. This type of assembly can also be called latching. The edges of the connecting strips can be rounded off to make it easier to latch the swivel movement between the tilt position and the straight position.

Latching is also made easier when the bent-over parts of the teeth are rounded at the end in such a way that they roll on the straight web when the connecting bar is tilted.

If the cavity enclosed by the connecting strips and profile rails is to be foamed, then recesses can also be provided on the edges of the connecting strips for the foam material to penetrate into the undercut grooves.

A fifth embodiment of the invention applied to the - seen in profile section - rectangular flat connecting strips can consist in the fact that the fastening elements are formed by toothed strips engaging in the holes or recesses in the connecting strips and having spring tongues engaging in the undercut grooves.

An embodiment of this fifth embodiment is that there is an undercut groove for receiving the spring tongues in at least one of two webs provided on each profile rail and extending in the direction of the other profile rail, that the undercut groove - seen in profile section from about to the connecting bar vertical and a groove flank extending from the base of the groove towards the associated profile rail is formed, and that the toothed strip - seen in profile section through the tooth area has approximately a U-profile, one U-leg forming the tooth, the other U-leg resiliently connecting strip engages under, and from the connecting leg connecting the two U-legs the spring tongues formed by incisions are bent out.

The spring tongues can have different lengths within tolerance limits. The spring tongues, which are too long, are pressed into the plane of the connecting leg by the groove neck. The spring tongues with the correct length engage behind the groove flank, which runs approximately perpendicular to the level of the connecting strip, and the spring tongues which are too short serve as a load reserve.

In this fifth embodiment, the force is introduced from the connecting strips into the additional fastening elements via the teeth of the toothed strip. The force introduction from the additional fastening elements into the profile rails takes place via the spring tongues. This ensures an optimal flow of force between the connecting strips and profile rails. The size and spacing of the teeth and the holes in the connecting strips that receive them can be selected so that there is great tear-out resistance. The spring tongues have sharp edges (which is not harmful for metal but causes a harmful notch effect for plastic), with which they can engage behind the undercut grooves in the metal profile rails in a positive and locking manner. Connecting strips provided with such toothed strips can therefore be made much slimmer than connecting strips made of plastic, on which end thickenings are formed for engaging behind the undercut grooves.

Another advantage of the toothed strips with spring tongues is that the connecting strips do not have to be inserted into the grooves in the longitudinal direction of the profile body, but rather can be pushed directly into the grooves, the spring tongues forming a snap connection with the undercut grooves. The assembly is therefore easier and less time consuming. In order to facilitate the insertion, at least the web - seen in the profile section - that contains the groove for receiving the spring tongues can be beveled at the end. The outwardly bent spring tongues can then slide along the slope, whereby they are first pressed into the plane of the connecting leg of the U-profile and after passing through the Can snap out the neck of the undercut groove.

While it is possible to produce the profile rails in any length, the flat, cross-sectionally rectangular connecting webs, in particular those made of layer material, such as hard paper, are only available in certain lengths (for example in the length of 2 m). If such connecting strips have been used at all (they were glued into the grooves), they were glued together at the joints. The glue points had to be mechanically load-bearing, i.e. be stable so that the connecting strips as well as the profile rails could be used in greater lengths.

A further development of the invention relating to the last-mentioned connecting strips with toothed strips can now consist in the fact that when connecting strips and toothed strips abut one another in the longitudinal direction of the profile body, the latter are arranged offset with respect to the connecting strips, such that the joints of the connecting strips are bridged by toothed strips. In order to obtain a seal at the joint, any sealing compound can be provided here, but this no longer has to form a load-bearing connection.

A sixth embodiment of the invention, which also applies to flat and sectionally rectangular connecting strips, preferably those made of layered material, such as hard paper, can consist in the fact that the fastening elements are formed by U-shaped springs, each of which is inside one of the connecting strips provided holes is arranged, the end of a U-leg looks out of the hole and engages in a corresponding undercut groove.

An embodiment of this sixth embodiment can consist in that each hole for receiving a U-shaped spring has a plane perforated wall that is perpendicular to the connecting strip plane and that is closest to the relevant edge of the connecting strip, and a distant oblique to the connecting strip that is located away from the relevant edge of the connecting strip. Level running flat perforated wall has that the two U-legs of the spring enclose approximately the same angle as the two perforated walls, and that the grooves are formed by sawtooth-shaped grooves in profile section, which are located on the opposite sides of two on the The respective profile rail provided and protruding webs against the other profile rail, and that the end of a U-leg protruding from the hole forms a cutting edge intended for engagement in the grooves.

This sixth embodiment of the invention is also characterized in that the connecting strips can be pushed directly into the grooves. The tips at the ends of the U-shaped springs protruding from the holes form a latching connection with the sawtooth-shaped grooves, in such a way that an insertion of the Connection strips in the grooves is possible, but no longer pulling out.

Embodiments of the invention are described below with reference to the drawings.

• Fig. 1 eine erste Ausführungsform der Erfindung;
• Fig. 2 eine zweite Ausführungsform der Erfindung;
• Fig. 3 bis 5 Verbindungsleuten mit verschiedenen Löchern uns Ausnehmungen;
• Fig. 6 und 7 eine dritte Ausführungsform der Erfindung;
• Fig. 8 und 9 eine erste Modifikation der dritten Ausführungsform;
• Fig. 1o und 11 eine zweite Modifikation der dritten Ausführungsform;
• Fig. 12 bis 14 eine vierte Ausführungsform der Erfindung;
• Fig. 15 und 16 eine erste Modifikation der vierten Ausführungsform der Erfindung;
• Fig. 17 und 18 eine zweite Modifikation der vierten Ausführungsform;
• Fig. 19 bis 21 eine fünfte Ausführungsform der Erfindung;
• Fig. 22 und 23 eine sechste Ausführungsform der Erfindung.

Show it:

• 1 shows a first embodiment of the invention;
• Fig. 2 shows a second embodiment of the invention;
• 3 to 5 connecting people with different holes and recesses;
• 6 and 7 a third embodiment of the invention;
• 8 and 9 show a first modification of the third embodiment;
• 10 and 11 show a second modification of the third embodiment;
• 12 to 14 show a fourth embodiment of the invention;
• 15 and 16 show a first modification of the fourth embodiment of the invention;
• 17 and 18 show a second modification of the fourth embodiment;
• 19 to 21 show a fifth embodiment of the invention;
• 22 and 23 a sixth embodiment of the invention.

Figure 1 shows in section two metal rails 1 and 2, which are connected to each other by two connecting strips 6 and 7. For this purpose, each of the two metal profile rails has two undercut grooves 5. Each undercut groove is formed by a straight web 3 and an L-shaped web 4. The two webs protrude from the other profile rail. The connecting strips are made of plastic and have a C-profile. This means that they consist of two anchoring legs 13, 14 which are connected to one another by a connecting leg 12. The anchoring legs protrude into the undercut grooves 5 enclosed by the L-bars 4.

To lock the connecting strips 6, 7 in the undercut grooves 5, in which they normally have play, locking strips 8 are also inserted in the grooves. These consist of an easily deformable metal. If the profile rails 1 consist of normal aluminum, the locking strips 8 consist of soft aluminum. The locking strips are inserted between the side of the connecting leg 12 which faces away from the anchoring leg 13, 14 in question and the inner wall of the straight web 3.

are the locking tabs then two gears 1 _0, out 11, which are driven by a drive mechanism 12th The gears 1o, 11 upset the locking strips 8 at regular intervals. In addition, the gears 1 ₀ , 11 press the connecting profile rails 1 into the intended fitting distance. After the locking strips 8 have been compressed, the profile body formed from the profile rails 1, 2 and the connecting strips 6, 7 is rigid and stable. It is also noteworthy that the compressed parts of the locking strips 8 are pressed into the plastic material of the connecting strips 6, 7.

FIG. 2 shows a profile body similar to FIG. 1. Here, however, instead of the locking strips, wedge strips 18 are driven into the undercut grooves 5. Here too, the wedge strips 18 are located between the inner wall of a straight web and the connecting leg 12 of the connecting strip 6, 7 in question. Instead of the gore strips 18, single wedges can also be used which are spaced apart over the length of the profile body. In order to hold the wedge strips 18 or individual wedges in the undercut grooves, the inside of the straight webs 3 are provided with a corrugation 15 in the present case.

Instead of the plastic connecting strips with a C-shape used in FIGS. 1 and 2, flat strips of layer material, for example those made of hard paper, can also be used as connecting strips. Additional fastening elements are then used to engage in the undercut grooves, which are inserted into holes or recesses which are provided on the edge of the connecting strips. In Figures 3 to 5 are three execution shapes shown. In FIG. 3 the holes are round, in FIG. 4 the holes are elongated in the longitudinal direction and rectangular and in FIG. 5 meandering recesses 23 are provided instead of the holes.

In the embodiment shown in FIGS. 6 and 7, connecting strips 20 according to FIG. 3 are used. Short cylindrical pins 24 are inserted into the round holes here. The profile rails, of which only the profile rail 2 is shown here, have two webs 25, 26 which extend towards the other (not shown profile rail). The web 25 is bent back relative to the web 26 just protruding. The web 26 is provided with a groove 19 which is trapezoidal in section. For attachment, the connecting bar 20 with the pins 24 is inserted between the two webs 25, 26. The web 25 is then bent toward the web 26. This is done in a known manner by rolling. Since the diameter of the cylindrical pins 24 is approximately equal to the diameter of the groove 19 in the middle depth, the pins 21 press into the groove when the web 25 rolls on. The pins 24 are made of a harder material than the rails 2,3. If the profile rails 2, 3 are made of normal aluminum, the pins 24 can be made of hard aluminum, for example. As a result, they press into the groove wall and form a firm anchor.

In the embodiment according to FIGS. 8 and 9, a groove with a rectangular cross section is provided in both the web 25 and the web 26. The cylindrical Pins 28 are somewhat longer here than in the embodiment according to FIGS. 6 and 7, so that they protrude on both sides of the connecting bar 20. Again, the web 25 is bent by rolling against the web 26, so that the pins 28 engage with both ends in one of the two grooves 27.

In the embodiment according to FIGS. 1o and 11, pins 29 are used which are similar in length to the pins 24 in FIGS. 6 and 7. The pins 29 only look out of the connecting bar 20 at one end. This end is provided with a tip 31 which is formed by three surfaces 32. The three surfaces form three cutting edges. This can be seen from the top view XI on the connecting bar 2 ₀ . The straight web 26 is provided with a tapered groove 3o, into which the tip 31 bores when the web 25 which is initially bent back is bent straight by rolling onto the connecting bar 2o. Here, too, the pins 29 are made of a harder metal, for example hard aluminum than the profile rail 2, which is made of normal aluminum, for example.

In the embodiment according to FIGS. 12 to 14, connecting strips according to FIG. 4 are used, that is to say those with rectangular holes 22. Instead of individual pins, the additional fastening elements here consist of toothed strips 33, which are provided with rectangular or pointed teeth 34. The teeth are inserted into the rectangular holes 22, so that the continuous part of the toothed strips 33 remains on one side of the connecting strip 20, while the teeth 34 protrude on the other side.

Here, too, the profile rails, of which only the profile rail 2 is shown in FIG. 13, have webs 25, 26 projecting against the other (not shown) profile rail 3, of which the web 25 is initially bent back. Both webs have rectangular grooves 27 in section. After inserting the connecting bar 20 provided with a toothed bar 33, the web 25 is rolled against the connecting bar 20. The parts of the teeth 34 protruding from the holes engage in the groove 27 of the web 26, while the continuous part of the toothed strip 33 engages in the groove 27 of the web 25.

In order to be able to produce any lengths of profile bodies, the connecting strips 2o must also be of any length. However, in contrast to profile rails 2,3, they are usually only available in lengths of up to 2m. A stable connection is now produced according to FIG. 14 by bridging two connecting strips 20 at the abutment points by tooth clamps 37. The toothed strips 33 are each only so long that they extend to the penultimate hole at both ends of the connecting strip 20 concerned, so that at least the last hole remains free for the insertion of tooth clips.

If, as in FIGS. 1 and 2, the undercut grooves according to FIG. 15 are each formed by a straight web 3 and an L-shaped web 4, connecting strips 20 of the type shown in FIG. 4 can also be used in the undercut grooves can be anchored by toothed racks 33. Such a toothed rack is enlarged in FIG. 16 and shown in perspective.

The ends of the teeth 34 that look out of the holes 22 are bent upward for this purpose. The bent part is then supported on the straight web 3. The continuous part of the toothed strip 33 engages under the one L-leg of the L-shaped web 4. A particular advantage of the embodiment shown in FIG. 15 is that the connecting strip 20 can be latched into the undercut groove 5 by tilting. In order to facilitate tilting, the edges of the connecting bar 20 are provided with a rounding 35. Only one edge is shown in FIG. In the other border, not shown, the conditions are mirror-inverted. In addition, recesses 36 are provided on the two edges of the connecting bar 2o at regular intervals over the length of the profile body, via which foam material can enter the undercut groove 5 if the cavity enclosed by the profile rails 2, 3 and the connecting bars 2o prior to solidification expanding foam mass is filled.

In the toothed strip shown in FIG. 16, the rear tooth 34 is bent at the end (as shown in section in FIG. 15), while the front tooth 34 is not yet bent.

The embodiment shown in FIGS. 17 and 18 is similar to the embodiment according to FIGS. 15 and 16. Here, however, the ends of the teeth 34 are not bent over, but twisted by 9o0. This can be seen in particular from the perspective view 18 of the connecting bar 20 and the toothed bar 33. In addition, the twisted ends of the teeth 34 are rounded in such a way that they form a rolling curve 16 with which the end of the tooth when the connecting bar 2o engages in the undercut groove 5 rolls on the straight web 3. Here, too, the two edges of the connecting bar 20 are in turn provided with recesses 36 which serve for the entry of foam compound. This can be seen particularly well in FIG. 18.

Connecting strips of the type shown in FIG. 4 are also used in the embodiment according to FIGS. 19 to 21. Likewise, toothed strips 44 are used. Depending on where the cut is made, these have either an L or U profile. If the cut is made through a tooth 45, for example the cut XXI shown in FIG. 21, the toothed strip has U-Prcfil. If the cut is not made through a tooth, such as the cut XX shown in FIG. 2o, the toothed strip 44 has an L profile. One U-leg 45 thus forms the teeth. The other U-leg 46, which extends over the entire length of the toothed strip 44, engages under the connecting strip 2o. From the connecting leg 43 connecting the two U-legs 45, 46, spring tongues 42 are cut out by incisions 47 between the teeth 45 and are bent away from the connecting bar 20. Each of the two profile rails, of which only the profile rail 2 is shown, has two webs 25, 26 projecting against the other 7-section rail. The web 26 is provided with an undercut groove 38. This consists of a perpendicular to the plane connecting strip groove flank 39 and an angle thereto against the rail profile 2 extending towards groove flank 4 _0th The spring tongues 42 have a different length within certain tolerance limits. The longest spring tongues are pressed from the slot neck into the plane of the connecting leg 43. The spring tongues 42 with the correct length rest at their end on the groove flank 39 running perpendicular to the connecting strip plane. The shorter spring tongues 42 form a load reserve. The U-leg 46 is under spring tension and seeks to push the connecting bar 20 against the retaining force of the spring tongues 42 abutting the groove flank 39.

In the embodiment according to FIGS. 19 to 21, assembly is carried out in a simple manner in that the connecting strips 2o - seen in the sectional plane - are pressed from above between the two webs 25, 26. The web 26 has a bevel 41 on which the spring tongues 42 are supported and are pressed downward into the plane of the connecting leg 43 as the connecting bar 20 moves. When the connecting bar 20 is pressed deep enough into the recess between the two webs 25, 26, the spring tongues 42 in question snap outward and engage behind the groove flank 39. In this way, a firm and stable snap connection is formed.

In the embodiment shown in FIGS. 22 and 23, flat connecting strips which are rectangular in section are also used. Although the holes 48 are rectangular in view of both sides of the connecting bar 20, they are trapezoidal in the sectional view in FIG. In other words, the holes 48 consist of a perforated wall 5o located near the edge of the connecting strip 2o and perpendicular to the connecting strip plane, and _{3 in a} perforated wall 49 extending from the edge at an angle to the connecting strip plane. The two perforated walls 49,5o just.

A U-shaped spring 51 is inserted into each hole 48. The two U-legs of the spring enclose approximately the same angle as the two perforated walls 49.5 ₀ . The end of the lower U-leg in FIG. 2 looks out of the hole 48 and is provided with a cutting edge 55. The arch at the bottom of the U-shaped spring also looks out of hole 48. The profile rail 2, which is shown here as representative of both profile rails, is provided with two webs 25, 26 which protrude from the other (not shown) profile rail and which have sawtooth-shaped grooves 54 on their inside. The cutting edge 55 engages in these grooves, and the arch on the base of the U-shaped spring 51 is also supported on these grooves.

In the embodiment shown in FIGS. 22 and 23, the assembly is carried out by pushing the connecting bar 2o - seen in the sectional plane - from above between the two webs 25, 26. The lower U-leg 53 of the spring 51 bends upward, while the upper U-leg 52 on the perforated wall 49 is present. By bending the U-leg 53, the cutting edge 55 can consequently slide from one groove 54 to the next lower one. If the female connector 2o is at the base of the recess formed by the two webs 25, 26, it can no longer be withdrawn, since the lower U-leg 53 is then supported on the lower perforated wall 5o. In this way, a rigid, stable connection is formed.

In most of the previously described embodiments, the pull-out strength of the connector strips is independent of the clamping force exerted by the undercut grooves on the metal fasteners.

Claims (31)

1) heat-insulating profile body, in particular for use in door or window frames or the like, consisting of two profile rails, preferably those made of metal, which are connected to one another by two profiled connecting strips made of heat-insulating material, the connecting strips being anchored in undercut grooves in the profile rails, characterized in that the connecting strips (6,7,2o) in the undercut grooves (5,19,27,3 ₀ , 38,54) with additional fastening elements (8,18,24,28,29,33,37,44 , 51), preferably those made of metal. 2) Heat-insulating profile body according to claim 1, characterized in that the connecting strips (6, 7) are deposited in the undercut grooves (5) with locking strips (8) made of a soft, deformable material, which have been widened by upsetting after assembly. 3) Heat-insulating profile body, according to claim 2, wherein the connecting strips - seen in profile section - have two engaging in undercut grooves a parallel anchoring leg and the anchoring leg connecting leg, characterized in that each locking strip (8) on the of the respective anchoring leg (13th , 14) away side of the connecting leg (12) is inserted into the relevant groove (5) and is compressed continuously or at intervals at its edge facing the groove opening over its length (FIG. 1). 4) Heat-spraying profile body according to claim 3, characterized in that the locking strips (8) consist of soft aluminum (Fig. 1). 5) Heat-insulating profile body according to claim 3 or 4, characterized in that the upsetting is carried out at intervals by means of a toothed wheel (1 ₀ , 11) guided with pressure over the edge of the respective locking strip (8) facing the groove opening (Fig. 1). 6) Heat-insulating profile body according to claim 4, characterized in that the compression of opposing locking strips (8) on an insulating strip (6,7) by means of two the profile rails (1,2) at the same time pushing the fitting distance gears (1 ₀ , 11) (Fig .1). 7) Heat-insulating profile body according to claim 1, characterized in that the additional fastening elements (18) are wedge-shaped (Fig. 2). 8) Heat-insulating profile body according to claim 7, wherein the connecting strips - seen in profile section - have two parallel anchoring legs engaging in undercut grooves and a connecting leg connecting the anchoring legs, characterized in that each wedge-shaped fastening element (18) on the of the respective anchoring leg (13 , 14) facing away from the connecting leg (12) between the corresponding groove wall and the mentioned side of the connecting leg (12) is driven (Fig. 2). 9) Heat-insulating profile body according to claim 7 or 8, characterized in that the wedge-shaped fastening elements (18) are formed by wedge strips extending over the entire length of the profile body or by a plurality of wedges which are spaced apart over the length of the profile body (Fig.2). 1 ₀ ) Heat-insulating profile body according to claim 9, characterized in that the wedge strips or individual wedges and / or the corresponding groove walls and / or the corresponding sides of the connecting leg (2) of the connecting strips (6, 7) is provided with longitudinal grooves (15) (Fig .2). 11) Heat-insulating profile body according to claim 1, characterized in that the connecting strips (20) consist of - seen in profile section - rectangular flat strips, preferably made of layer material, such as hard paper, that the connecting strips (20) at their edges with recesses (23) or holes (21,22,48) in which the fastening elements (24,28,29,33,37,44,51) are anchored, and that the fastening elements in the undercut grooves (5,19,27,3 ₀ , 38, 54) engage (Fig. 3-23) 12) Heat-insulating profile body according to claim 11, characterized in that there is an undercut groove (19, 27, 33) for receiving the fastening elements (24, 29, 28) in at least one of two on each profile rail (1, 2) and provided is in the direction of the other profile rail extending webs (25, 26) and that one of the two webs (25) is bent away from the other web (26) before assembly and after assembly into one, to the other web (26) approximately parallel position is bent (Fig. 6-1-1, 13, 14). 13) Heat-insulating profile body according to claim 12, characterized in that an undercut groove (27) is provided in each of the two webs (25, 26) and that the fastening elements (33) extend into both grooves (27) (Fig. 10 , 11, 13, 14). 14) Heat-insulating profile body according to one of claims 11-13, characterized in that the fastening elements are formed by cylindrical pins (24, 28, 29) inserted into round holes (21) in the connecting strips (2o) (Fig. 6-11 ). 15) Heat-insulating profile body according to claim 14, characterized in that the undercut grooves (19) - seen in section - have a conically narrowing profile against the bottom of the groove, and that the diameter of the blunt cylindrical pins (24) at the ends is approximately equal to that Groove diameter is approximately half the groove depth. (Fig.6.7). 16) Heat-insulating profile body according to claim 13, characterized in that the undercut grooves (3 ₀ ) - seen in section - have a tapered profile against the bottom of the groove, and that the cylindrical pins (29) at their ends to form at least three surfaces (32) and cut edges are tapered at approximately the same angle as the grooves (3o) (Fig. 1 ₀ , 11). 17) heat-insulating profile body according to claim 16; characterized in that the pins (29) consist of a harder material than the profile rails (1,2) (Fig. 10, 11). 18) Heat-insulating profile body according to claim 11-13, characterized in that the fastening elements are formed by toothed strips (33, 44), the teeth (34, 45) being inserted through holes (22) in the connecting strips (2o) (Fig. 12-21). 19) Heat-insulating profile body according to claim 18, characterized in that the teeth (34, 45) are rectangular or pointed at their front end, and that the holes (22) in the connecting strips (2o) are elongated in the longitudinal direction of the profile body and approximately have a rectangular cross-section (Fig. 12-21). 2 ₀ ) Heat-insulating profile body according to claim 18 or 19, characterized in that the parts of the teeth (34) looking out from the connecting strip (20) are bent or twisted (Fig. 15-18). 21) Heat-insulating profile body according to claim 11 and 2 ₀ , in which the undercut grooves are each formed by one - in profile section - L-shaped and a straight web, both of which protrude against the other profile rail, characterized in that the continuous part of the Toothed strip (33) on the side of the connecting strip (2o) facing the L-shaped web (4), and that the bent or twisted parts of the teeth (34) looking out on the other side of the connecting strip (2o) are on the straight web (3) support (Fig. 15-18). 22) Heat-insulating profile body according to claim 21, characterized in that the edges of the connecting strips (20) are rounded (Fig. 15). 23) Heat-insulating profile body according to claim 21 or 22, characterized in that the bent parts of the teeth (34) are rounded at the end so that they roll on the straight web (3) when the connecting bar (2o) is tilted (Fig. 17 , 18). 24) Heat-insulating profile body according to one of claims 21-23, in which a cavity formed between the two profile rails and the two connecting strips is filled with a foam mass expanding before solidification, characterized in that recesses (36) are provided on the edges of the connecting strips (20). are provided for the passage of the foam mass in the undercut grooves (5) (Fig. 15-18). 25) heat-insulating profile body according to claim 11, characterized; that the fastening elements are formed by toothed strips (44) which engage in the holes (22) or recesses (23) of the connecting strips (20) and which have spring tongues (42) which engage in the undercut grooves (38) (FIGS. 19-21). 26) Heat-insulating profile body according to claim 25, characterized in that an undercut groove (38) for receiving the spring tongues (42) in at least one of two webs provided on each profile rail (1, 2) and extending in the direction of the other profile rail (25, 26) finds that the undercut groove (38) - seen in profile section - is formed by a groove flank (4o) which is approximately perpendicular to the connecting bar (20) (39) and a groove flank (4o) extending from the base of the groove towards the associated profile rail (2) is, and that the rack (44) - in profile section through the tooth area ge see - has a U-profile, one U-leg (45) forms the tooth, the other U-leg (46) engages under the connecting bar (2o) and from which the two U-legs (45,46) connect Connecting leg (43) the spring tongues (42) formed by incisions (47) are bent out (Fig. 19-21). 27) Heat-insulating profile body according to claim 26, characterized in that the spring tongues (42) have a different length within tolerance limits (Fig. 19-21). 28) Heat-insulating profile body according to claim 26 or 27, characterized in that at least that web (25, 26) - seen in profile section - is chamfered at the end which contains the groove (38) (Fig. 2o, 21). 29) Heat-insulating profile body according to one of claims 17 to 28, characterized in that in the longitudinal direction of the profile body abutting connection strips (2o) and toothed strips (33, 44) the latter are arranged offset with respect to the connection strips (20), such that the joints of the Connection strips (20) are bridged by toothed strips. _(F ig. 14) 3 ₀ ) heat-insulating profile body according to claim 11, characterized in that the fastening elements are formed by U-shaped springs (51), each of which is arranged within one of the holes (48) provided in the connecting strips (20), the end ( 55) of a U-leg (53) looks out of the hole (49) and engages in a corresponding undercut groove (54) (FIGS. 22, 23). 31) A heat-insulating profile body according to claim 3 ₀ , characterized in that each hole (48) for receiving a U-shaped spring (51) has a flat perforated wall (50) lying next to the relevant edge of the connecting strip (20) and perpendicular to the connecting strip plane ) and a distant from the relevant edge of the connecting bar (20) lying obliquely to the connecting bar level plane hole wall (49) that the two U-legs (52,53) of the spring (51) enclose approximately the same angle as the two perforated walls (49, 50) such that the grooves are formed by grooves (54) which are saw-shaped in the profile section and which are located on the mutually facing sides of two webs provided on the (1,2) respective profile rail and projecting against the other profile rail (25,26), and that the end (55) of the one U-leg (53) which looks out of the hole (48) forms a cutting edge (55) (Fig. 22,23).

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