WO2009115246A1

WO2009115246A1 - Device for sealing an expansion joint

Info

Publication number: WO2009115246A1
Application number: PCT/EP2009/001849
Authority: WO
Inventors: Günter Brinkmeier; Gerhard Kaufmann
Original assignee: Protektorwerk Florenz Maisch Gmbh & Co. Kg
Priority date: 2008-03-17
Filing date: 2009-03-13
Publication date: 2009-09-24
Also published as: ES2395487T3; PT2274489E; EP2274489B1; EP2274489A1; RS52491B; DK2274489T3; DE102008014605A1; PL2274489T3

Abstract

The invention relates to a device for sealing an expansion joint between wall segments, having an upper plaster layer, particularly façades. The device comprises a profile strip made at least partially of plastic and two profile rails that can be fixed in the region of the edges of the expansion joint and inserted in the profile strip. The profile strip comprises a soft center part and hard side parts attached on both sides thereof. Each side part comprises a guide channel extending longitudinally and substantially perpendicular to a front side of the profile strip having a longitudinal cross section, open to a rear side of the profile strip and designed for receiving a leg of the profile rail. A mounting segment is provided in the guide channel, wherein a mounting element working together with the mounting segment is provided on the leg of the profile rail. The mounting segment and the mounting element form an undercut limited or prevented in the direction toward the rear side of the profile strip by a motion of the mounting element.

Description

Device for sealing an expansion joint

The present invention relates to a device for sealing an expansion joint between wall or wall sections with an upper plaster layer, in particular facades, with an at least partially made of plastic profile strip and two fixable in the edges of the expansion joint and insertable into the profile rail rails, wherein the profile strip a soft middle part and hard sides attached thereto on both sides, and wherein each side part comprises a longitudinally and substantially perpendicular to a front side of the profile strip extending guide channel having an elongate cross section, which is open to a rear side of the profile strip and formed to receive a leg of the rail is.

A device of this type is known from DE 100 14 097 Al. In this device, close to the guide channel of a side part in each case two perpendicular thereto extending distance channels, which extend substantially parallel to the front of the profile strip. The profiled rails each have a U-shaped cross-section in the region of the side parts, one leg of the U-shaped profile in each case engaging in a distance channel, while the base part of the U-shaped profile is arranged in the guide channel. Depending on in which distance channel the leg of the rail is used, the rail can be adjusted from a first predetermined thickness of the plaster layer to a second predetermined thickness. The problem with this known profile strip is that on the one hand it can only be adapted to two different depths of plastering, while usually three standard depths of plastering exist. Furthermore, due to the U-shaped design of the profile rail, the assembly of the profile strip is relatively complicated.

It is an object of the present invention to provide a device of the type mentioned, which can be used in more than two different thick plaster layers and in which a simple assembly of the profile strip is guaranteed.

Starting from a device of the type mentioned above, this object is achieved in that provided in the guide channel, a holding portion and that on the leg of the rail a cooperating with the holding portion holding member is provided, wherein the holding portion and the holding element form an undercut through which a movement of the retaining element in the direction of the rear side of the profile strip is limited or prevented.

In contrast to the device according to DE 100 14 097 Al, the fastening of the leg of the profile rail thus takes place directly by holding members provided in the guide channel and on the free leg. As a result, a U-shaped configuration of the areas of the profile rails to be used in the side parts of the profile strip is avoided so that the transverse distance channels adjoining the elongate guide channel are also not required. The side panels are therefore simpler and cheaper to produce and also have a smaller width. Differently thick plaster layers can be covered by an appropriate design of the leg of the rail and a corresponding arrangement of the holding elements, so that in in all cases the same profile strip can be used. Since the profile strip comprises a large part of the production costs of the device according to the invention, the costs for a device can be reduced while simultaneously covering different thicknesses of plaster layers.

According to an advantageous embodiment of the invention, the distance between the holding portion and the guide channel to the front of the profile bar towards limiting wall is substantially the same size as the distance between a cooperating with the holding portion of the holding member and a facing the front of the profile strip end of the leg the profile rail. This ensures that the leg is securely held within the guide channel, since the leg is clamped with the holding element within the guide channel in a direction perpendicular to the front of the profile strip.

Advantageously, the rail has an L-shaped cross section. In this way, a simple insertion of the rail in the guide channel of the side panels is possible because there are no double-angled legs as in a U-shaped profile element.

According to a further advantageous embodiment of the invention, the holding element is formed as a bent portion of the free end of the leg of the rail, wherein the portion is preferably bent by approximately 180 ° relative to the legs of the profiled rail. Alternatively, the holding element may be formed as an integrally formed on the leg of the profiled rail approach. In both cases, the retaining element preferably comprises a facing the back of the profile strip and in particular parallel to the front of the profile strip extending contact surface, the advantageous one facing the front of the profile strip and in particular bears parallel thereto extending contact surface of the holding portion. By this abutting contact surfaces of holding portion and retaining element, the above-mentioned undercut is formed, is reliably prevented by the fact that the rails can be pulled out of the provided in the back of the side panels openings of the moldings again.

According to a further advantageous embodiment of the invention, the holding section comprises a starting slope pointing towards the rear side of the profile strip. Similarly, the holding element may include a run-on slope facing the front of the profile strip. By one or both chamfers is achieved that the leg of the rail does not have to be inserted laterally into the guide channel, but can be pressed from behind over the rear opening in the guide channel, whereby the assembly of the device according to the invention is simplified.

According to a further advantageous embodiment of the invention, the width of the part of the profile rail arranged in the guide channel substantially corresponds to the width of the guide channel. This ensures that the free leg of the rail can be used in the guide channel without further, subsequent to the guide channel additional channels within the side part are required. As a result, a very simple construction of the respective side part is possible.

According to a further preferred embodiment of the invention, a plurality of holding elements are provided on the rail. The distance between individual holding elements can be set to the distance between correspond to different standard cleaning depths. By providing a plurality of holding elements, it can be achieved on the one hand that the part of the profile rail arranged in the guide channel comes into contact with the side walls of the guide channel at several points, so that a tilting of the leg within the guide channel is avoided. Furthermore, it is possible, when providing several holding elements depending on the depth of coverage to be covered, to shorten the length of the free leg of the mounting rail such that the device according to the invention can be adapted to different depths of cleaning.

According to a further preferred embodiment of the invention, the middle part comprises a middle section extending between the two side parts and two side sections extending thereon, wherein in each case a free end of a side section is connected to a side part of the profiled strip. In this case, the connection between the middle part and the side part is preferably provided in each case on a part of the side part located towards the rear side of the profile strip. As a result, a particularly flexible design of the device designed according to the invention is achieved.

The connection between the middle part and the side part may be formed, for example, as a dovetail joint or as another suitable connection.

Preferably, the middle part is not connected to its side facing the front of the profile strip part with the side parts. This also achieves a particularly flexible embodiment of the device designed according to the invention. According to a further advantageous embodiment of the invention, the side portions of the central part each have an inwardly directed arcuate profile. As a result of this special cross-sectional shape, it is achieved that, for example, joints do not occur as a corner element when the device designed according to the invention is used.

According to a further advantageous embodiment of the invention, the central portion of the Mitteilteils has a slightly inwardly directed arcuate profile. Also, a joint formation is largely prevented when used as a corner element.

Advantageously, the middle part made of soft plastic, in particular soft PVC. The side parts can be made of hard plastic, especially hard PVC. In principle, the use of other materials for the middle part and the side part is also possible as long as they have the required material properties.

According to an advantageous embodiment of the invention, the profile rails are made of plastic, in particular made of PVC, or made of metal. In particular, when a plurality of retaining elements as approaches to the

Legs of the rail are provided, the formation of the rail made of plastic is expedient because the holding elements mitange- molded directly, for example, molded or miteinggossen and on the other hand shortening of the leg of the rail is easily possible.

Further advantageous embodiments of the invention are specified in the subclaims. The present invention will be described in more detail below by means of embodiments with reference to the drawings; in these show:

1 shows a cross section through an inventively designed profile strip,

2 shows two profiled rails of a first embodiment of a device according to the invention,

3 is a detail view of the profile strip according to Fig. 1,

4 to 6 a first embodiment according to the invention, applied at three different depths of cleaning,

7 to 9 three further embodiments according to the invention trained profile rails,

10 to 12 three further inventively designed devices using the rails according to FIGS. 7 to 9, and

Fig. 13 at an inventively designed device at

Use as inner corner.

Fig. 1 shows an inventive design profiled strip 1, which is symmetrical to a standing perpendicular to the plane of the drawing plane 2 and a soft middle part 3 and laterally arranged therefrom hard side parts 4 includes. The side parts 4 consist of elongated hollow profiles running parallel to the longitudinal plane 2 in which Ren inside each case a guide channel 5 is formed, which extends in the longitudinal direction of the side parts 4 and has a perpendicular to a front side 6 of the profiled strip 1 aligned elongated cross-section.

At the rear side 7 of the side parts 4 and thus the profile strip 1 are each formed over the length of the side parts 4 extending slot-shaped openings 8 through which the guide channels 5 are each open to the back 7 of the profile strip 1 out.

Due to the openings 8, the side parts 4 thus have a U-shaped cross-section, wherein on one leg 9 of the side part 4 in each case an inwardly projecting holding portion 10 is provided which as a sawtooth-shaped projection 11 with a 12 pointing to the back 7 Auflaufschrä- and a front surface 6 facing the bearing surface 13 is formed.

At the rear end of the leg 9 is a extending over the entire length of the side part 4 extending dovetail groove 14 into which a corresponding dovetail-shaped projection 15 of the Mitteilteils 3 engages, whereby the middle part 3 and the side parts 4 are interconnected. The dovetail-shaped projection 15 is in each case formed on a free end of two side sections 16 which, together with a central section 17 connecting the two side sections 16, form the middle section 3 of the profiled strip 1. Both side sections 16 have an arcuate cross-section, which is arched inwards, in each case to the longitudinal plane 2. Similarly, the central portion 17 has a symmetrical to the longitudinal axis 2, arcuate cross-section, wherein the curvature, however, significantly lesser formed than the curvatures of the side portions sixteenth FIG. 2 shows two profiled rails 18, each comprising an L-shaped main body 19 with a long leg 20 and a short leg 21 angled at right angles thereto. The free end of the short leg 21 is bent over in each case by 180 °, whereby in each case a holding element 22 is formed, which has a contact surface 23 on its free end face.

As can be seen from the detail view according to FIG. 3, the leg 21 of the profiled rail 18 can be inserted in each case with the holding element 22 into the guide channel 5 of the profiled strip 1, so that the abutment surfaces 23 and 13 come into contact with each other and form an undercut , is prevented by the movement of the rail 18 in the direction of an arrow 24 and thus decoupling the rail 18 of the profile strip 1.

In addition, the holding element 22 has a defined by the distance between the contact surface 23 and the front side 6 of the profile strip 1 end 25 of the leg 21, equal to the distance between the contact surface 13 and a guide channel 5 to the front 6 of Profile strip 1 towards limiting wall 26 is. Thus, a movement of the rail 18 is prevented against the arrow 24.

Finally, the width of introduced into the guide channel 5 is also

Part of the professional rail 18 together with the holding element 22 substantially equal to the width of the guide channel 5, so that a movement of the guide member 18 is prevented perpendicular to the arrow 24 and thus results in a firm connection between the guide rail 18 and the side part 4. An insertion of the leg 21 with the holding element 22 in the guide channel 5 is easily possible through the opening 8 due to the starting slope 12, being pushed back during insertion of the legs 9 until the leg 21 with the holding member 22 in the in Fig. 3 Position is located and the leg 9 resiliently springs back into the starting position shown. In principle, it is also possible to insert the leg 21 with the holding element 2 in the longitudinal direction in the guide channel 5.

To cover an expansion joint 28 formed between two wall or wall sections 27, the profiled strip 1 is inserted into each of the two guide channels 5 per profile rail 18 according to FIG. 2 and then the entire device is positioned on the wall or wall sections 27 as shown in FIG in that the profiled strip 1 forms a cover for the expansion joint 28. Subsequently, the rails 18 are each plastered in a plaster layer 29 and thus attached to the wall or wall sections 27. To increase the stability of the attachment, tissue sections 30 can be provided on the profile rails 18, which are penetrated by the plaster, so that the fastening effect is increased.

In order to cover the expansion joint 28 with the same profile strip 1 even at different depths, that is, different thicknesses of plaster layers 29, different rails 18 ', 18 "may be provided, which formed identical to the rail 18 to the length of the leg 21 Depending on the desired depth of cleaning, the leg 21 is correspondingly designed to have different lengths, as shown in FIGS. 4 to 6, in order to compensate for the different depths of cleaning. to be able to A change of the profile strip 1 is not required.

In the embodiments described below with reference to FIGS. 7 to 13, the same reference numerals are used for features already described with respect to FIGS. 1 to 6 or similar.

Instead of different profiled rails 18, 18 ', 18 ", it is also possible to provide a uniform profiled rail 31 according to Fig. 7. The profiled rail 31 differs from the profiled rail 18 in that it comprises holding elements 22' which are not deflected by bending of the leg 21 but are formed by lugs 32, 32 'integrally formed on the limb 21. Like the holding elements 22, the lugs 32 each have a contact surface 23 which abuts against the contact surface 13 when the limb 21 is inserted into the guide channel 5 and forms a undercut In addition, the lugs 32, 32 'each have chamfers 33, which come into contact with the chamfer 12 during the insertion of the limb 21 through the opening 8 and further facilitate the insertion. that the leg 32 is also fixed in the lateral direction within the guide channel 5.

The rail 31 can be used with the same profile strip 1, as described in FIGS. 1 to 6. In order to be able to compensate for different cleaning depths, the leg 21 of the rail 31 can be shortened in each case to the desired length, as shown in FIGS. 8 and 9. In principle, it is also possible that even when the holding elements 22 'are designed as lugs 32, different profile rails 31 are provided whose legs 21 are adapted to different putty depths. In this case, the additional approaches 32, 32 ', which are provided in the profile rail according to FIG. 7 for use for different cleaning depths, omitted.

FIGS. 10 to 12 each show a device according to the invention with two profiled rails according to FIG. 7 and a profiled strip according to FIG. 1. The attachment is analogous to that explained with reference to FIGS. 4 to 6, wherein the length of the legs 21 has been adapted in each case to the corresponding cleaning depth.

In Fig. 13, the use of an inventively designed device is shown at an inner corner. In this application, only the central portion 17 of the middle part 3 of the profile strip 1 is further deformed in the direction of its preformed arch shape, whereby a clean corner connection for the plaster layers 29 is formed. Due to the special shape of the Mitteilteils 3 while a joint formation is counteracted. Correspondingly, a Inneneckausbildung can also be done with a device according to FIGS. 1 to 6. Furthermore, according to the described embodiments, a device designed according to the invention can also be used in an analogous manner in an outside corner.

LIST OF REFERENCE NUMBERS

1 profile strip

2 longitudinal plane

3 middle part

4 side parts

5 guide channels

6 front side

7 back side

8 openings

9 thighs

10 holding section

1 1 approach

12 starting slope

13 contact surface

14 groove

15 approach

16 side sections

17 middle section

18, 18 ', 18 "profile rails

19 basic body

20 long thighs

21 short thigh

22, 22 'retaining element

23 contact surface

24 arrow

25 end of the thigh 21

26 wall

27 wall or wall sections

28 expansion joint Rendering

tissue sections

rails

approaches

starting slope

Claims

claims

1. Apparatus for sealing an expansion joint (28) between wall or wall sections (27) with an upper plaster layer (29), in particular facades, with a plastic profile strip (1) and two in the region of the edges of the expansion joint (28) fixable and in the profile strip (1) insertable rails (18, 18 ', 18 ", 31), wherein the profile strip (1) comprises a soft middle part (3) and on both sides attached thereto hard side parts (4), and wherein each side part (4) one comprises longitudinally and substantially perpendicularly to a front side (6) of the profiled strip (1) extending guide channel (5) with an elongate cross-section which is open to a rear side (7) of the profiled strip (1) and for receiving a leg (21) the rail (18, 18 ', 18 ", 31) is formed, characterized in that in the guide channel (5) a holding portion (10) is provided and that on the leg (21) of the rail (18, 18', 18 ", 31) one with the Holding portion (10) cooperating holding element (22, 22 ') is provided, wherein the holding portion (10) and the holding element (22, 22') form an undercut, by which a movement of the holding member (22, 32) towards the back (7) the profile strip (1) towards limited or prevented.

2. A device according to claim 1, characterized in that the distance between the holding section (10) and a the

Guide channel (5) to the front (6) of the profile strip (1) towards limiting wall (26) is substantially the same size as the distance between an area of the holding element (22, 22 ') which interacts with the holding section (10) and an end (25) of the leg (21) of the profile rail (18, 31) which points towards the front side (6) of the profiled strip (1).

3. A device according to claim 1 or 2, characterized e g e e n e e c e s e s that the Profϊlschiene (18, 18 ', 18 ", 31) has an L-shaped cross-section.

4. Device according to at least one of the preceding claims, characterized in that the holding element (22) as a bent portion of the free end of the leg (21) of the profile rail (18, 18 ', 18 ") is formed.

5. Device according to claim 4, characterized in that the section is bent over about 180 ° with respect to the leg (21) of the profile rail (18, 18 ', 18 ").

6. Device according to claim 1, characterized in that the holding element (22 ') is formed as a projection (32) integrally formed on the leg (21) of the profiled rail (31).

7. Device according to at least one of the preceding claims, characterized in that the holding element (22, 22 ') to the rear (7) of the profile strip (1) comprises facing and in particular parallel to the front side (6) of the profiled strip (1) extending contact surface (23).

8. Device according to at least one of the preceding claims, characterized in that the holding section (10) comprises a contact surface (13) facing the front side (6) of the profiled strip (1) and extending in particular parallel thereto.

9. Device according to claim 1, characterized in that the holding element (22, 22 ') and the holding section (10) abut one another.

10. Device according to claim 1, characterized in that the holding section (10) comprises a run-on slope (12) facing the rear side (7) of the profile strip (1).

11. Device according to claim 1, characterized in that the holding element (22, 22 ') comprises a run-on slope (33) facing the front side (6) of the profile strip (1).

12. Device according to at least one of the preceding claims, characterized in that the width of the part of the profile rail (18, 18 ', 18 ", 31) arranged in the guide channel (5) is substantially equal to the width of the

Guide channel (5) corresponds.

13. Device according to at least one of the preceding claims, characterized in that a plurality of holding elements (22 ') are provided on the profiled rail (31).

14. Device according to at least one of the preceding claims, characterized in that the distance between individual retaining elements (22 ') corresponds to the distance between different standard plaster depths.

15. The device according to at least one of the preceding claims, characterized in that the central part (3) extending between the two side parts (4) extending central portion (17) and two erstre- ckende side sections (16), wherein each one free End of a side portion (16) with a side part (4) of the profile strip (1) is connected.

16. Device according to claim 15, characterized in that the side sections (16) of the central part (3) each have an inwardly directed arcuate profile.

17. Device according to claim 15 or 16, characterized in that the center section (17) of the central part (3) has a slightly inwardly directed arcuate profile.

18. Device according to at least one of the preceding claims, characterized in that the connection between the middle part (3) and the side part (4) is provided in each case on a part of the side part (4) which faces the rear side (7) of the profiled strip (1).

19. Device according to claim 1, characterized in that the connection between the middle part (3) and the side part (4) is designed as a dovetail connection.

20. Device according to claim 1, characterized in that the middle part (3) is not connected to the side parts (4) at its part facing the front side (6) of the profiled strip (1).

21. Device according to at least one of the preceding claims, characterized in that it e e n e c e s e s that the middle part (3) consists of soft plastic, in particular soft PVC.

22. Device according to claim 1, characterized in that the side parts (4) consist of hard plastic, in particular hard PVC.

23. Device according to claim 1, characterized in that the side parts (4) consist of an elastic material.

24. Device according to at least one of the preceding claims, characterized in that the profiled rails (18, 18 ', 18 ", 31) are made of plastic, in particular of PVC, or of metal.