EP2274489B1 - Device for sealing an expansion joint - Google Patents

Description

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 kind is from the DE 100 14 097 A1 known. 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 configuration of the rail, the assembly of the profile strip is relatively complex.

From the DE 25 49 041 A1 is a seal for expansion joints in walk-in and driveable surfaces, especially in floors, known, the two fixed on both sides of an expansion joint rails with extending into the expansion joint console-like projections as a support for a permanently elastic cover made of plastic or rubber. The permanently elastic cover is dovetailed by in the region of its longitudinal edges downwardly projecting sawtooth profiled strips in correspondingly shaped grooves of the rails, wherein the grooves are formed in the bracket-like projections and lying between the moldings or between the projections middle section of the cover a bridge arc-like curved cross-section having V-shaped spread, supported on the projections supporting legs.

In this seal, the connection between the moldings of the permanently elastic cover and the rails in a tapping, which can solve relatively easily unintentionally at a pressure or tensile stress of the seal or weakened with time.

From the EP 1 479 847 A1 a device according to the preamble of claim 1 is known.

It is an object of the present invention to provide a device according to the preamble of claim 1, in the use thereof - especially as a corner element - a joint formation is largely prevented.

Starting from a device according to the preamble of claim 1, this object is achieved in that the side portions of the central part each have an inwardly directed arcuate profile and / or that the central portion of the central portion has a slightly inwardly directed arcuate profile.

In contrast to the device after the DE 100 14 097 A1 According to the invention, the attachment of the leg of the rail directly by provided in the guide channel and on the free leg holding members. 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 to 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 leg of the rail. Alternatively, the holding element may be formed as an integrally formed on the leg of the rail profile 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 arranged in the guide channel portion of the rail corresponds substantially 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 the distance between different Standard cleaning depths correspond. By providing a plurality of holding elements can be achieved on the one hand, that arranged in the guide channel part of the rail at several points on the side walls of the guide channel comes to rest, so that tilting of the leg is avoided within the guide channel. 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 profile 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 the invention, the side portions of the central portion each have an inwardly directed arcuate profile and / or the central portion of the Mitteilteils has a slightly inwardly directed arcuate profile. This special cross-sectional shape ensures that, for example, when using the device designed according to the invention as a corner element no joints occur.

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 possible as long as they have the required material properties.

According to an advantageous embodiment of the invention, the profile rails made of plastic, in particular made of PVC, or metal. In particular, when a plurality of retaining elements are provided as lugs on the leg of the rail, the formation of the profile rail made of plastic is useful because the holding elements mitangeformt directly, for example, molded or co-molded and on the other a shortening of the leg of the rail is easily possible.

Further advantageous embodiments of the invention are specified in the subclaims.

Fig. 1

einen Querschnitt durch eine erfindungsgemäß ausgebildete Profilleiste,

Fig. 2

zwei Profilschienen einer ersten Ausführungsform einer erfindungsgemäß ausgebildeten Vorrichtung,

Fig. 3

eine Detailansicht der Profilleiste nach Fig. 1,

Fig. 4 bis 6

eine erste Ausführungsform gemäß der Erfindung, angewendet bei drei verschiedenen Putztiefen,

Fig. 7 bis 9

drei weitere Ausführungsformen erfindungsgemäß ausgebildeter Profilschienen,

Fig. 10 bis 12

drei weitere erfindungsgemäß ausgebildete Vorrichtungen unter Verwendung der Profilschienen nach Fig. 7 bis 9, und

Fig. 13

eine erfindungsgemäß ausgebildete Vorrichtung bei Verwendung als Innenecke.

The present invention will be described in more detail below by means of embodiments with reference to the drawings; in these show:

Fig. 1

a cross section through an inventively designed profile strip,

Fig. 2

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

Fig. 3

a detail view of the profile bar after Fig. 1 .

4 to 6

a first embodiment according to the invention, applied at three different depths,

Fig. 7 to 9

three further embodiments according to the invention trained profile rails,

10 to 12

three further inventively designed devices using the rails after Fig. 7 to 9 , and

Fig. 13

an inventively designed device when used as an inner corner.

Fig. 1 shows an inventive design profiled strip 1, which is symmetrical to a standing perpendicular to the plane of the drawing longitudinal plane 2 and a soft middle part 3 and laterally arranged therefrom hard side parts 4 includes. The side parts 4 consist of elongated, parallel to the longitudinal plane 2 extending hollow sections, in whose 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 profile 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 is a sawtooth-shaped projection 11 with a 7 pointing to the rear run-on slope 12 and one to the front 6 facing 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 formed in each case at a free end of two side portion 16, which together with a connecting the two side portions 16 central portion 17, the middle part 3 of the profile 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, is formed significantly smaller than the curvatures of the side portions sixteenth Fig. 2 shows two profiled rails 18, each comprising an L-shaped base body 19 with a long leg 20 and a right angle angled short leg 21. 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 seen from the detail view Fig. 3 can be seen, the leg 21 of the rail 18 can be used in each case with the holding element 22 in the guide channel 5 of the profile strip 1, so that the contact surfaces 23 and 13 abut each other and form an undercut, by a movement of the rail 18 in the direction an arrow 24 and thus a decoupling of the rail 18 of the profile strip 1 is prevented.

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

Finally, the width of the inserted into the guide channel 5 part of the profiled rail 18 together with the support member 22 is 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 a firm connection between the guide rail 18 and the side part 4 results.

An insertion of the leg 21 with the support member 22 in the guide channel 5 is easily possible through the opening 8 due to the chamfer 12, which is pushed back during insertion of the legs 9 until the leg 21 with the support member 22 in the in Fig. 3 is shown position and the leg 9 resiliently springs back into the initial 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.

For covering a trained between two wall or wall sections 27 expansion joint 28 are in each of the guide channels 5 of the profiled strip 1 per a rail 18 according to Fig. 2 inserted and then the entire device as in Fig. 4 shown positioned on the wall or wall sections 27 that the profile 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 the pigtail 21 is correspondingly designed to be of different lengths, as in the 4 to 6 is shown to compensate for the different grooming depths to be able to. A change of the profile strip 1 is not required.

In the following with reference to the Fig. 7 to 13 described embodiments are already for the Fig. 1 to 6 described or similar features the same reference numerals.

Instead of different profile rails 18, 18 ', 18 "may also be a uniform rail 31 according to Fig. 7 be provided. The rail 31 differs from the rail 18 in that they comprise holding elements 22 ', which are formed not by bending the leg 21, but by integrally formed on the legs 21 lugs 32, 32'. Like the holding elements 22, the lugs 32 each have a contact surface 23, which comes into abutment with the leg 21 inserted into the guide channel 5 against the contact surface 13 and forms an undercut therewith. In addition, the lugs 32, 32 'each have chamfers 33, which come when inserting the leg 21 through the opening 8 at the run-on slope 12 to the plant and further facilitate insertion. By the additional lugs 32 'it is achieved that the leg 21 is fixed in the lateral direction within the guide channel 5.

The rail 31 can be used with the same profile strip 1, as in the Fig. 1 to 6 has been described. In order to compensate for different cleaning depths, the leg 21 of the rail 31 can be shortened to the desired length, as in the 8 and 9 is shown. 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 ', in the rail according to Fig. 7 are intended for use for different cleaning depths omitted.

In the 10 to 12 is in each case a device according to the invention with two rails according to Fig. 7 and a profile strip according to Fig. 1 shown. The attachment is analogous to the 4 to 6 has been explained, wherein the length of the legs 21 has been adapted in each case to the corresponding 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, an inner corner training also with a device according to the Fig. 1 to 6 respectively. 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

Molding

2

longitudinal plane

3

midsection

4

side panels

5

guide channels

6

front

7

back

8th

openings

9

leg

10

holding section

11

approach

12

starting slope

13

contact surface

14

groove

15

approach

16

side sections

17

midsection

18, 18 ', 18 "

rails

19

body

20

long thigh

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

29

Rendering

30

tissue sections

31

rails

32

approaches

33

starting slope

Claims (15)

1. An apparatus for sealing an expansion joint (28) between exterior wall portions or interior wall portions (27) having an upper plaster layer (29), in particular facades, having a section strip (1) composed of plastic and two section rails (18, 18', 18", 31) which can be fixed in the region of the margins of the expansion joint (28) and which can be inserted into the section strip (1), wherein the section strip (1) includes a soft middle part (3) and hard side parts (4) fastened at both sides thereof, wherein the middle part (3) includes a middle portion (17) extending between the two side parts (4) and two side portions (16) extending thereat, wherein a respective free end of a side portion (16) is connected to a side part (4) of the section strip (1), and wherein each side part (4) includes a guide passage (5) which extends along and substantially perpendicular to a front side (6) of the section strip (1), which has an elongate cross-section which is open towards a rear side (7) of the section strip (1) and is designed for receiving a limb (21) of the section rail (18, 18', 18", 31), wherein furthermore a holding portion (10) is provided in the guide passage (5) and a holding element (22, 22') cooperating with the holding portion (10) is provided at the limb (21) of the section rail (18, 18', 18", 31), wherein the holding portion (10) and the holding element (22, 22') form an undercut by which a movement of the holding element (22, 22') in the direction towards the rear side (7) of the section strip (1) is bounded or prevented,
   characterised in that
   the side portions (16) of the middle part (3) each have an inwardly directed arcuate section in the non-deformed state of the section strip (1); and/or in that the middle portion (17) of the middle part (3) has a slightly inwardly directed arcuate section in the non-deformed state of the section strip (1).
2. An apparatus in accordance with claim 1,
   characterised in that
   the spacing between the holding portion (10) and an interior wall (26) bounding the guide passage (5) towards the front side (6) of the section strip (1) is substantially the same size as the spacing between a region of the holding element (22, 22') cooperating with the holding portion (10) and an end (25) of the limb (21) of the section rail (18, 31) facing towards the front side (6) of the section strip (1).
3. An apparatus in accordance with claim 1 or claim 2,
   characterised in that
   the section rail (18, 18', 18", 31) has an L-shaped cross-section.
4. An apparatus in accordance with at least one of the preceding claims,
   characterised in that
   the holding element (22) is formed as a bent-over portion of the free end of the limb (21) of the section rail (18, 18', 18"), with the portion in particular being bent over by approximately 180° with respect to the limb (21) of the section rail (18, 18', 18").
5. An apparatus in accordance with at least one of the claims 1 to 3,
   characterised in that
   the holding element (22') is formed as a projection (32) moulded to the limb (21) of the section rail (31).
6. An apparatus in accordance with at least one of the preceding claims,
   characterised in that
   the holding element (22, 22') includes a contact surface (23) facing towards the rear side (7) of the section strip (1) and in particular extending in parallel to the front side (6) of the section strip (1); and/or
   in that the holding portion (10) includes a contact surface (13) facing towards the front side (6) of the section strip (1) and in particular extending in parallel thereto; and/or
   in that the holding element (22, 22') and the holding portion (10) contact one another.
7. An apparatus in accordance with at least one of the preceding claims,
   characterised in that
   the holding portion (10) includes a run-on chamfer (12) facing towards the rear side (7) of the section strip (1); and/or
   in that the holding element (22, 22') includes a run-on chamfer (33) facing towards the front side (6) of the section strip (1).
8. An apparatus in accordance with at least one of the preceding claims,
   characterised in that
   the width of the part of the section rail (18, 18', 18", 31) arranged in the guide passage (5) substantially corresponds to the width of the guide passage (5).
9. An apparatus in accordance with at least one of the preceding claims,
   characterised in that
   a plurality of holding elements (22') are provided at the section rail (31).
10. An apparatus in accordance with at least one of the preceding claims,
    characterised in that
    the connection between the middle part (3) and the side part (4) is respectively provided at a part of the side part (4) disposed towards the rear side (7) of the section strip (1); and/or
    in that the connection between the middle part (3) and the side part (4) is formed as a dove-tail connection.
11. An apparatus in accordance with at least one of the preceding claims,
    characterised in that
    the middle part (3) is not connected to the side parts (4) at its part disposed towards the front side (6) of the section strip (1).
12. An apparatus in accordance with at least one of the preceding claims,
    characterised in that
    the middle part (3) is composed of soft plastic, in particular of soft PVC.
13. An apparatus in accordance with at least one of the preceding claims,
    characterised in that
    the side parts (4) are composed of hard plastic, in particular of hard PVC.
14. An apparatus in accordance with at least one of the preceding claims,
    characterised in that
    the side parts (4) are composed of an elastic material.
15. An apparatus in accordance with at least one of the preceding claims,
    characterised in that
    the section rails (18, 18', 18", 31) are formed from plastic, in particular from PVC or from metal.

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