EP2221424B1 - Single component closing rail for a building heat insulation or a building acoustic insulation and use of same as lower closure of an external heat insulation for a house wall - Google Patents

Abstract

The rail (2) has an external rail area (16) provided with first arm (20) for a system with respect to an outer side of an insulation. A second arm (4) includes a third arm (6) and the rail area. An expansion region (8) is arranged between the third arm and the rail area in a transition region to adjust the first arm at different distances from the second arm. The expansion region is made of plastic and flexible with respect to the third arm and the rail area. The second arm and the third arm are made of hard plastic e.g. PVC, polystyrene or polyurethane. The external rail area is made from a soft and flexible plastic such as soft PVC or thermoplastic elastomer.

Description

One-piece finishing rail for building thermal insulation or structural sound insulation, and use of same as a bottom finish of external thermal insulation of a house wall. Such a one-piece end rail is generic DE 20 2007 003504 U1 known.

The invention relates to a one-piece end rail for a building thermal insulation or a building sound insulation and the use of such a one-piece end rail as the lower end of an external thermal insulation of a house wall.

Buildings are nowadays often provided on their outside with a thermal insulation, which consists for example of rigid foam or fiberboard. In such thermal insulation composite systems often one-piece metallic angle rails are still used at the lower end of the heat insulation, which are fastened with a first leg to the building and rest with a second leg against the lower end face of the insulation. However, this known solution has the disadvantages that the lower connection area of the thermal insulation during rainfall still remains fairly humid and that must be expected in the long run with corrosion on the metallic angle rail. In addition, the thermal conductivity of the metallic angle rail reduces the insulating effect. Finally, such metallic angle rails are always designed only for an insulation thickness and not able to compensate for tolerances.

Two-piece end rails, such as those from the DE 299 24 216 U1 Although they offer more flexibility, but they are much more expensive and therefore more expensive to manufacture and purchase, so that nowadays in practice still mostly resorted to one-piece metal end rails, despite the associated practical disadvantages.

It is therefore an object of the present invention to provide a one-piece end rail, which is inexpensive to produce, a secure conclusion offers the end of thermal insulation and is also able to compensate for occurring tolerances or even suitable for different thermal insulation thicknesses.

This object is solved by the subject matter of the independent patent claims. Advantageous developments emerge from the dependent claims.

A one-piece end rail according to the invention for structural heat insulation or structural sound insulation comprises a first leg for attachment to the structure, a second leg for abutment against an end face of the insulation and an outer edge region with a third leg for abutment against the outside of the insulation. The first leg, the second leg and the outer bar area comprise plastic, and in a transition region between the second leg and the outer bar area a Dehnbereich of a plastic opposite to the plastic of the second leg and the outer bar area softer plastic is arranged, which is an arrangement of the third leg in allows different distances to the first leg.

A further one-piece end rail according to the invention for structural heat insulation or building sound insulation comprises a first leg for attachment to the structure, a second leg for abutment against a termination end side of the insulation and an outer edge region with a third leg for abutment against the outside of the Insulation. The first leg, the second leg and the outer bar area comprise plastic, and the second leg includes a stretching area made of a plastic which is softer than the remaining plastic of the second leg in order to allow the third leg to be arranged at different distances from the first leg.

According to one of the invention underlying knowledge arises in Putzabschlussbereich due to temperature fluctuations and also due to the ever thicker insulation used increased movement, the at often leads to plaster cracks in the plaster connection area previously used rigid one-piece finishing rails.

In accordance with one aspect of the present invention embodied in both of the above-described one-piece end rails as defined in claims 1 and 2, both of the one-piece end rails include an expansion portion formed in accordance with the present invention, and therefore these one-piece end rails of the present invention are capable of To compensate for movements in the plaster finishing area and reliably avoid the emergence of such Putzrissen in Putzanschlussbereich. In particular, can be compensated by the Dehnbereich expansion of the insulation at high temperatures and shrinkage of the insulation at low temperatures.

The one-piece end strips according to the invention also offer flexibility and versatility in the application, as otherwise known only from two-part end rails, at the same time such one-piece end rails are inexpensive to produce and easy to assemble. The choice of plastic material corrosion problems and thermal bridging, as they occur regularly in metallic end strips, reliably avoided. The one-piece end rails according to the invention secure placement in Putzanschlussbereich and a secure completion of the thermal insulation is achieved. Ingress of moisture and small animals, such as mice, can be reliably prevented by such a one-piece closure rail.

The advantageous developments of the invention described below relate to both one-piece end strips according to the invention, namely both the one-piece end strip according to the invention, in which the expansion region is arranged in a transition region between the second leg and the outer edge region, as well as on the one-piece end strip in which the expansion region is included in the second leg, and they can be realized in each case in two one-piece end rails according to the invention.

According to a first embodiment of the invention, the expansion region is designed and dimensioned such that structural tolerances can be compensated during processing and movements in the plaster connection region can be accommodated. For this purpose, the expansion is relatively small, preferably of the order of a few millimeters. As a result, building tolerances, for example, deviations in the insulation thickness can be compensated.

According to a further embodiment of the invention, the expansion region is designed and dimensioned such that the terminating rail is suitable for insulation with different thicknesses. Insulating materials with thicknesses in 20 mm increments are currently being used. In new buildings, typical insulation thicknesses usually range between 120 and 160 mm, and rehabilitation involves insulation thicknesses between 80 and 140 mm. Conventional one-piece end rails require a separate end rail for each insulation thickness. By suitable dimensioning and design of the Dehnbereichs, in particular by providing Dehnbereichen of at least 20 mm width, the inventive end rail can be used for several insulation thicknesses, so that the variety of types of the end rails can be reduced, which saves considerable costs. Even those finishing rails, the Dehnbereich is designed and dimensioned so that they are suitable for insulation with different thicknesses, are able to compensate for tolerances during processing and record movements in Putzanschlussbereich, as has been described above.

According to a further embodiment of the invention, a net-like reinforcing material for applied to the insulation plaster is attached to the outer edge region. There are a number of possibilities for the type of fastening, in particular the gluing or the provision of a fastening device for attaching the net-like reinforcing material on the outside, in particular clamping between two sections of the outer strip region. However, welding, in particular ultrasonic welding, is particularly preferred ( Inline) of the reinforcing material on the outside of the outer bar area.

According to a further embodiment of the invention, the expansion region is formed so flexible that it pivoting of the outer strip region between a pivoted position, in which the third leg is substantially parallel to the second leg, that is aligned substantially horizontally, and a pivoted position, in which is the third leg substantially parallel to the first leg, that is aligned substantially vertically, allowed. This offers the advantage that simplify the transport of the end rail and also their processing and attachment when the reinforcing material is in the pivoted position. A swiveling out of the outer edge region with reinforcing material attached thereto takes place, in particular, only after the attachment of the first leg to the structure.

According to a further embodiment of the invention, the expansion region in the form of a loop with a first expansion wall which attaches to the second leg, with a second expansion wall, which attaches to the outer edge region and formed with a arranged between the two Dehnwänden Dehnboden. Such a stretching area is simple and inexpensive to produce, and it represents a reliable and practical solution with which a horizontal positional displacement of the third leg is made possible.

According to a further embodiment of the invention, the outer bar area on the side facing the first leg on an upper support area, virtually in extension of the second leg, which is provided for abutment against a final end face of the insulation. As a result, the corresponding corner of the thermal insulation is particularly securely fixed.

According to a further embodiment of the invention, the outer edge region has a downwardly projecting portion which forms a drip tip for water. This ensures that the underside of the end rail remains dry in any case.

According to an advantageous further embodiment of the invention, the second leg has a step.

According to a further embodiment of the invention, the first leg and the second leg and / or the outer edge region are made of a hard and resistant plastic. Particularly suitable PVC, polystyrene and polyurethane have proven. Other plastics, including foamed plastics, however, can also be expressly used.

According to a further embodiment of the invention, the stretching region is made of a soft and flexible plastic. Soft PVC or thermoplastic elastomers have proved to be particularly suitable for this purpose. However, other soft and flexible plastics can also be used.

A particularly effective and cost-effective production for the end rail according to the invention results when the first leg, the second leg and the outer edge region are coextruded with their hard plastic and the Dehnbereich with its soft and flexible plastic together.

The invention also relates to the use of the one-piece closure rail of the type described above as a bottom finish of an external thermal insulation of a house wall. In this case, in particular the downwardly extending portion of the outer edge region form a drip nose for water.

In a further development of the invention, a connector can also be provided in the joint region of the end rail, which connects the base rails in the joint.

• Figur 1 zeigt eine Seitenansicht einer einteiligen Abschlussschiene in ihrer Herstellungs- und Transportposition gemäß einem Ausführungsbeispiel der Erfindung;
• Figur 2 zeigt eine Seitenansicht der einteiligen Abschlussschiene aus Figur 1 in ihrer Montageposition;
• Figur 3 zeigt eine Seitenansicht einer einteiligen Abschlussschiene in ihrer Montageposition gemäß einem weiteren Ausführungsbeispiel der Erfindung;
• Figur 4 zeigt eine Schnittansicht durch ein Wärmedämm-Verbundsystem mit der einteiligen Abschlussschiene aus Fig. 2; und
• Figur 5 zeigt eine Seitenansicht einer einteiligen Abschlussschiene in ihrer Montageposition gemäß einem weiteren Ausführungsbeispiel der Erfindung.

The invention is explained in more detail by means of embodiments with reference to the accompanying figures.

• FIG. 1 shows a side view of a one-piece end rail in its manufacturing and transport position according to an embodiment of the invention;
• FIG. 2 shows a side view of the one-piece end rail FIG. 1 in their mounting position;
• FIG. 3 shows a side view of a one-piece end rail in its mounting position according to another embodiment of the invention;
• FIG. 4 shows a sectional view through a thermal insulation composite system with the one-piece end rail Fig. 2 ; and
• FIG. 5 shows a side view of a one-piece end rail in its mounting position according to another embodiment of the invention.

FIG. 1 shows a side view of a one-piece end rail 2 in its manufacturing and transport position according to an embodiment of the invention.

In the following, the terms "inside" and "outside" are understood to be left and right with respect to the drawing plane.

The one-piece closure rail 2 comprises, from left to right, an upwardly projecting first leg 4, a horizontal second leg 6, an expansion region 8 and an outer edge region 16 with a reinforcing fabric 26.

The first leg 4 comprises in the Fig. 1 not to be recognized mounting holes, so that the one-piece end rail 2 can be attached to a house wall with suitable fasteners, such as with dowels. The right outer side of the first leg 4 is in the installed state on the inside of the insulation. At the lower end of the first leg 4, the horizontal second leg 6 connects approximately at right angles, on the upper side of the end face of the insulation rests in the installed state. The adjoining the second leg 6 expansion region 8 includes a building-side Dehnwand 10, a Dehnboden 12 and an outside Dehnwand 14, to which the outer edge region 16 connects. The thickness of the building-side Dehnwand 10, the Dehnbodens 12 and the outside Dehnwand 14 is significantly reduced compared to the thickness of the second leg 6, and the Dehnwände 10 and 14 are oriented substantially downwards, and the Dehnboden 12 extends approximately horizontally. The first leg 4, the second leg 6, the expansion region 8 and the outer edge region 16 are integrally connected to one another and produced, for example, by plastic coextrusion. The legs 4, 6 and the outer edge region 16 are made of a hard, stable plastic, in particular of PVC, polystyrene or PU, and the expansion region 8 is made of a softer, more flexible plastic, in particular soft PVC or a thermoplastic elastomer. The outer edge region 16 with the reinforcement fabric 26 attached thereto is located in Fig. 1 in the pivoted-in production and transport position.

FIG. 2 shows a side view of the one-piece end rail 2 in its mounting position.

In Fig. 2 is the outer bar area 16 with the reinforcement fabric 26 mounted therein in the swung-out mounting position. The pivoting direction between the swiveled manufacturing and transport position according to Fig. 1 and the swung-out mounting position according to Fig. 2 is in Fig. 2 represented by an arrow provided with the reference numeral 30.

The in the FIGS. 1 and 2 outer edge region 16 illustrated by way of example comprises a main body with a recess 24 provided therein, on the upper side of which the upper end surface 18 is located, which in the pivoted-out mounting position is aligned with the upper side of the second leg 6. On the outside of the outer edge region 16, a third leg 20 projects upwards, which is intended to bear against the outside of the insulation in the mounting position. On the outside of the outer edge region 16, a downwardly projecting drip nose 22 is further provided, dripping on the water in the mounting position and is to be prevented by the correspondingly that water reaches the underside of the one-piece end rail 2.

On the outer surface of the outer edge portion 16, the reinforcing fabric 26 is fixed, which attachment in the FIGS. 1 and 2 exemplified by a Ultraschallverschweißung 28 is executed. The reinforcing fabric 26 is attached to the outside of the outer strip portion 16 with an extension parallel to the extension direction of the third leg 20 and the drip nose 22 extending, and it extends from the outside of the outer edge portion 16 upwards. The reinforcing fabric can be made in particular of a glass silk. The reinforcing fabric 26 is intended to be secured with putty on the outside of the thermal insulation.

The one-piece finishing rail 2 is suitable for different plaster thicknesses, and especially for thin plaster and thick plaster.

The width of the top of the second leg 6, the expansion region 8 and the upper end surface 18, ie the width between the outside of the first leg 4 and the inside of the third leg 20 substantially corresponds to a conventional insulation thickness, for example, a thickness of 120 mm for a in case of a new building used insulating material or for example of 100 mm for an upcoming rehabilitation used insulation.

By the expansion region 8, a displacement of the third leg 20 relative to the first leg 4 outwards and inwards take place, as is made possible by the flexible Dehnwände 10 and 14 and the flexible Dehnboden 12. This allows on the one hand building tolerances are compensated, so for example if the actual insulation thickness deviates by a few millimeters from the prescribed insulation thickness, on the other hand movements in Putzanschlussbereich, resulting for example by temperature effects are compensated, and cleaning cracks can be reliably avoided.

If the stretch region 8 larger and possibly with a different structure than in the FIGS. 1 and 2 is shown formed, so can such a large extent between the third leg 20 and the first leg 4 can be achieved that the one-piece end rail 2 is not only suitable for a certain insulation thickness, but for several insulation thicknesses and thicknesses. As a result, significant costs can be saved.

In the in Fig. 1 shown pivoted manufacturing and transport position, the reinforcing fabric 26 can be applied particularly favorable to the outer edge region 16. Furthermore, the one-piece connection rail in the in Fig. 1 shown manufacturing and transport position only a small amount of space, so that the one-piece finishing rail can be transported very space-saving, which also saves costs. The outer edge region 16 with the reinforcing fabric 26 attached thereto only needs to be in place at the construction site Fig. 2 shown swung mounting position to be brought.

FIG. 3 shows a side view of a one-piece closure rail 32 in its mounting position according to another embodiment of the invention.

The one-piece closure rail 32 according to Fig. 3 differs from that in the FIGS. 1 and 2 shown one-piece end rail 2 that its horizontally extending second leg 6 has a step 34. Its other elements correspond to the elements of the one-piece end rail 2, and these are provided with the same reference numerals.

The one-piece end rail 32 has the expansion region 8, which allows a horizontal displaceability of the third leg 20 relative to the first leg 4, and a pivoting between the manufacturing and transport position, in which the third leg 20, the drip 22 and the reinforcing fabric 26 are oriented substantially horizontally, and the swung-out mounting position, in which these elements are aligned substantially vertically, allows.

FIG. 4 shows a sectional view through a thermal insulation composite system 36 with the one-piece closure rail. 2

The thermal insulation composite system 36 is attached to a lower end of a house wall 38. In this case, the one-piece end rail 2 is horizontally aligned at the lower end of the house wall 38 and mechanically, for example. By means of Fig. 4 Not shown impact anchors attached. Horizontally adjoining end rails are properly connected by means of suitable connectors. Then, the insulating plate 40, whose thickness matches the width of the one-piece end rail 2, placed and by means of a in the Fig. 4 Adhesive not shown glued to the house wall 38. Beforehand, the outer edge region 16 with the reinforcing fabric 26 attached thereto is of the type shown in FIG Fig. 1 shown einwenkten production and transport position in the in Fig. 2 pivoted pivoted mounting position shown pivoted. If necessary, the outer bar region 16 with the reinforcing fabric 26 attached thereto can also be temporarily pivoted further outwards than in the Fig. 2 and 4 is shown to allow easier placement of the thermal insulation 40 on the one-piece end rail 2. Thereafter, the reinforcing fabric 26 is attached from the outside with putty on the outside of the insulation 40. This filler is in FIG. 4 not shown separately from the plaster layer 42. In addition, at the top further reinforcing fabric, which is not shown, can be overlapped on the reinforcing fabric 26 and also attached to the heat insulation 40. After the putty has tightened or hardened, a plaster layer 42 is applied on the outside. On the plaster layer 42 may finally, for example. A in Fig. 4 not shown paint applied.

Through the expansion region 8, the thermal insulation composite system 36 can work. Temperature-related expansions and shrinkages can be compensated, without causing cleaning cracks.

It is immediately apparent that such an inventive thermal insulation composite system 36 can be easily and comfortably processed, that it provides a clean plaster finish, precise edges and a targeted water flow. The design of the one-piece plastic finishing rail also results in a thermal bridge reduction and an improved insulating effect.

Fig. 5 shows a side view of a one-piece closure rail 44 in its mounting position according to another embodiment of the invention.

In this case, the one-piece terminating rail 44 corresponds to the one-piece terminus rail 2 as shown in FIG Fig. 2 is shown, with the difference that its expansion region 48 is not arranged in a transition region between the second leg 6 and the outer edge region 16, but rather at an approximately central position of the second leg, and that the second leg is therefore in a building-side area 46 of the second leg, in the expansion region 48 and in an outside region 50 of the second leg divided.

The effect of the expansion region 48 to allow a displacement of the third leg 20 relative to the first leg 4, so as to compensate for tolerances during processing and absorb movements in Putzanschlussbereich and, with appropriate design of the expansion region 48, absorb different thickness insulation, corresponds to the same way as provided by the expansion region 8 in the one-piece end rail 2. The other advantages set forth above with respect to the one-piece end rail 2 apply in the same way also to the one-piece end rail 44, and these are not listed again here to avoid repetition.

It is expressly noted at this point that the arrangement of the expansion region 48 is basically possible at any width position of the second leg, and the position does not need to be centered. Similarly, the stretch area may also be further left or further to the right than this Fig. 5 is shown and may even be arranged at the left end of the second leg immediately adjacent to the first leg 4.

LIST OF REFERENCE NUMBERS

2

one-piece termination rail

4

first leg

6

second leg

8th

strain range

10

building-side Dehnwand

12

Dehnboden

14

outside expansion wall

16

Outside bar area

18

upper end surface

20

third thigh

22

clapboard

24

recess

26

Armierungsgewebe

28

ultrasonic welding

30

pan direction

32

one-piece termination rail

34

step

36

Thermal Insulation Composite System

38

housewall

40

thermal insulation

42

Rendering

44

one-piece termination rail

46

building side area of the second leg

48

strain range

50

outside area of the second leg

Claims (15)

1. A one-piece finishing strip (2) for a building thermal insulation or a building noise insulation, comprising:

   a first leg (4) provided for being attached to the building,

   a second leg (6) provided for abutment against a finishing end face of the insulation; and

   an outer fillet portion (16) having a third leg (20) provided for abutment against the outside of the insulation;

   said first leg (4), said second leg (6) and said outer fillet portion (16) comprising plastics material;

   characterized in that, in a transition portion between the second leg (6) and the outer fillet portion (16), there is arranged an expansion portion (8) of plastics material that is softer than the plastics material of the second leg (6) and of the outer fillet portion (16), so as to permit arrangement of the third leg (20) in different distances from the first leg (4).
2. A one-piece finishing strip (2) for a building thermal insulation or a building noise insulation, comprising:

   a first leg (4) provided for being attached to the building,

   a second leg (46, 50) provided for abutment against a finishing end face of the insulation; and

   an outer fillet portion (16) having a third leg (20) provided for abutment against the outside of the insulation;

   said first leg (4), said second leg (46, 50) and said outer fillet portion (16) comprising plastics material;

   characterized in that the second leg (46, 50) has an expansion portion (48) of plastics material that is softer than the remaining plastics material of the second leg (46, 50), so as to permit arrangement of the third leg (20) in different distances from the first leg (4).
3. A finishing strip (2) according to claim 1 or 2,
   wherein the expansion portion (8) is designed and dimensioned to permit compensation of building tolerances during application and accommodation of movement in the plaster joint portion and/or realization of different plaster thicknesses.
4. A finishing strip (2) according to any of the preceding claims,
   wherein the expansion portion (8) is designed and dimensioned such that the finishing strip is suitable for insulations of different thicknesses.
5. A finishing strip (2) according to any of the preceding claims,
   wherein the outer fillet portion (16) has attached thereto, in particular welded thereto, a net-like reinforcing material (26) for plaster to be applied onto the insulation.
6. A finishing strip (2) according to any of the preceding claims,
   wherein the expansion portion (8) is designed to be flexible so as to permit pivoting of the outer fillet portion (16) between an inwardly pivoted position, in which the third leg (20) is aligned substantially parallel to the second leg (6), and an outwardly pivoted position, in which the third leg (20) is aligned substantially parallel to the first leg (4).
7. A finishing strip (2) according to any of the preceding claims,
   wherein the expansion portion (8) is in the form of a loop having a first expansion wall (10) joined to the second leg (6), a second expansion wall (14) joined to the outer fillet portion (16), and an expansion floor (12) arranged between said two expansion walls (10, 14).
8. A finishing strip (2) according to any of the preceding claims,
   wherein the outer fillet portion (16), on the side facing the first leg (4), has an abutment portion (18) for abutment against a finishing end face of the insulation.
9. A finishing strip (2) according to any of the preceding claims,
   wherein the outer fillet portion (16) has a downwardly projecting section (22) constituting a drip nose for water.
10. A finishing strip (30) according to any of the preceding claims,
    wherein the second leg (6) has a step (32).
11. A finishing strip (2) according to any of the preceding claims,
    wherein the first leg (4) and the second leg (6) and/or the outer fillet portion (16) are made of hard plastics material, in particular PVC, polystyrene or polyurethane.
12. A finishing strip (2) according to any of the preceding claims,
    wherein the expansion portion (8) is made of soft flexible plastics material, in particular soft PVC or a thermoplastic elastomer.
13. A finishing strip (2) according to any of the preceding claims,
    wherein the first leg (4), the second leg (6), the outer fillet portion (16) and the expansion portion (8) are manufactured by co-extrusion.
14. The use of the one-piece finishing strip (2) according to any of the preceding claims as lower termination of an outer thermal insulation of a building wall.
15. The use of the one-piece finishing strip (2) according to claim 13,
    wherein the downwardly projecting section of the outer fillet portion (16) constitutes a drip nose for water.

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