DE102010037080A1 - Under base element has plate-shaped base carrier with two sides for manufacturing under base covering on base surface - Google Patents

Abstract

The under base element (10) has a plate-shaped base carrier with two sides (30,32) for manufacturing an under base covering on a base surface. A locking system is provided for the groove-spring-connection of two under base elements. A groove has a notch and a spring has a projection. An adhesive such as tiles, laminate flooring, carpet or polyvinyl chloride is applied on an adhesive layer.

Description

The invention relates to a subfloor element with a plate-shaped base support according to the preamble of claim 1. Such subfloor elements serve to create a complete subfloor covering on a particular uneven floor surface to then apply an upper surface such. As tiles, natural stone, laminate, parquet, carpet, PVC linoleum or the like.

From the publication DE 20 2009 017 368 U1 It is known that underbody elements are used for producing a floor covering on a floor surface with a dovetailed connector. In this case, the plug connection, which is arranged at least on two sides of the subfloor element, partially a structured or profiled surface. Due to the profiled surface, a secure hold between the underbody elements can be made possible by applying at least two subfloor elements, since the profilings engage in one another such that a displacement in the horizontal direction is avoided. However, it has proven to be disadvantageous that the interlocking profilings of the individual subfloor elements can be achieved by a particularly vertically exerted pressure on the subfloor lining, the toothing. As a result, a relative displacement of the individual subfloor elements relative to one another initially in the vertical and then in the horizontal plane is possible, so that either joints or overlaps can occur. The unwanted formation of joints can thus reduce the insulating properties of the floor covering and overlap of the individual subfloor elements can lead to an unwanted partial increase of the floor covering. As a result, even with an inflexible top surface, such. B. tile destruction or cracks occur.

It is an object of the present invention to provide underbody elements for the production of a subfloor covering on a particular uneven ground surface or not laid for other reasons, wherein the individual subfloor elements can be safely and reliably arranged to a subfloor. Furthermore, it is an optional object of the invention to allow a simple and inexpensive installation of the subfloor.

To solve this problem, an underbody element with the features of claim 1 is proposed, in particular with the features of the characterizing part. In the dependent claims preferred developments are carried out.

The underbody element according to the invention with a plate-shaped base support is used for producing a floor covering on a floor surface. The bottom surface itself may have a non-ready-to-install surface contaminated by, for example, oil or other anti-adhesive soils, old wood floors, cracked or otherwise problematic surfaces. The underbody element further comprises at least a first and at least one second side, the first side having a groove and the second side having a spring. By using the spring in the groove a tongue and groove connection is made possible. According to the invention, it is provided that the tongue and groove connection of at least two subfloor elements forms a locking system. In this case, the groove has at least one notch and the spring at least one projection. The projection is formed substantially geometrically complementary to the notch, so that two sub-floor elements in a horizontal plane (ie horizontally) are connected to one another. In this case, the spring of a first subfloor element can be inserted into the groove of a second subfloor element such that both subfloor elements in the horizontal plane can not be decoupled from each other. This means that a tensile or compressive force in the direction of the horizontal plane can not lead to separate the two connected sub-floor elements or move relative to each other (meaning to the left or right). The proposed locking system forms namely with or at the tongue and groove connection at least a positive connection and possibly also a frictional connection between the two connected underbody elements. Such locking systems are referred to in the upper floor area as "click systems". Due to the tongue and groove connection itself, the two connected subfloor elements can not be displaced to each other in the vertical plane (meaning upwards or downwards). For introducing the spring into the groove, the second subfloor element can be slightly angled or tilted relative to the first subfloor element in order to be able to introduce the spring into the groove. Then we lowered the first subfloor element to come to rest in the same horizontal plane as the first subfloor element. On a further connection of the two subfloor elements connected in this way can be completely dispensed with. Consequently, no gluing, screwing or the like takes place. Thus, a total of a very simple and fast and thus inexpensive installation of the subfloor is possible. Only in the edge area are the last subfloor elements to be laid by cutting or sawing adapted to the spatial conditions. For the mentioned locking system, the projection may be mounted below the spring, so that a (mechanical) resistance-free introduction of the spring into the groove is enabled when the first subfloor element is introduced at an angle to the second subfloor element. Subsequently, the first subfloor element can be guided in the horizontal plane to the second subfloor element, so that in this case the projection slides in the notch of the groove. For this purpose, advantageously, the position of the projection of the first subfloor element may be minimally shifted to the notch of the second subfloor element, whereby a bias in the assembled state of the first and the second subfloor element can be made possible. Of course, an attachment of the projection is also conceivable above the spring. In addition, a mounting of the underbody elements in the horizontal plane can be made possible by the projection of the spring can be inserted by a force on the spring in the notch of the groove. The subfloor flooring produced is thereby oberbelagsfrei, ie formed without wearing layer or decor.

Another advantage of the invention is that the sub-floor covering produced does not have to be frictionally connected to the substrate or the building or is and thus is always easily solvable. Thus, z. B. in a rented apartment also tiles or parquet are laid, which are easily removable without leaving any residue, since the underbody elements according to the invention have been used as a subfloor. Also in the area of department stores or decoration areas, the residue-free removability of the topsoil with the underbody elements according to the invention has a great advantage. The removal of the soil is to realize the fast and inexpensive. Nevertheless, such a ground produced no temporary.

Due to the non-positive connection of the subfloor lining with the substrate, the floor covering is mechanically decoupled from the substrate, so that movements of the substrate, for example, when cracking, widening, shrinkage or swelling are not transmitted to the floor covering.

It has proven to be advantageous that the plate-shaped base support a particular rigid material, such as. As metal, compressed wood fiber, plastic, ceramic and / or the like. This is also the use of mineral, such as cementitious or with other inorganic binders produced board materials such. As cement fiber or gypsum fiber boards, conceivable as a plate-shaped base support. Also composites for the basic carrier can be used. The compacted wood fiber can be provided with particular water-resistant binders, so that in this case plate-shaped base support can be used, referred to as OSB (Oriented Strand Board) or HDF (high density fiber) - or MDF (medium density fiber) plates become. Also, a similar system based on a chipboard can be used. Preference is given to the use of impregnated wood fiber boards, which swell only very slightly due to water absorption. The wood fiber boards have the advantage that when using water-based dispersion adhesives for the bonding of floor coverings on the plate-shaped base support, the water contained therein can be absorbed, whereby the initial adhesion of the adhesive is accelerated. The absorbed water can then be discharged successively by diffusion to the ground and / or laterally. Biegesteif in this context means that the plate-shaped base carrier behaves stiffer than the surrounding material, wherein the loads occurring on the base are forwarded to the floor surface. Thus, the subfloor flooring can be designed sufficiently stable pressure, so that elastic floor coverings are mounted on the subfloor and in the case of the subjection of a point load on the flooring no impressions remain in the subfloor. Thus, a dimensionally stable and load-distributing subfloor flooring can be produced. Preferably, the plate-shaped base support has a thickness of 2 mm to 16 mm or more preferably from 5 mm to 10 mm.

It is advantageous that the plate-shaped base support has an upper side, wherein on the upper side an adhesion layer of, for example, cellulosic material, polymers, homogeneous polymers, natural fibrous material or synthetic fibrous material is attachable. Thus, an adhesion improvement for adhesives for the bonding of floor coverings on the surface of the produced floor covering can be made possible. It is conceivable that the adhesion layer is adjusted or prepared according to the composition of the adhesives to be used in order to achieve optimum adhesion results.

It is particularly advantageous that the adhesion layer is designed to absorb water. Thus, aqueous dispersion adhesives can be made possible for the bonding of floor coverings on the adhesion layer. Thus, the adhesive layer provides an absorbent substrate, which can absorb excess water from the adhesive and also dissipate this water via diffusion from the system into the ground. It can thereby accelerate the initial adhesion of the adhesive. This hard floor coverings such. As tiles or natural stone are bonded to the adhesion layer. This also applies to parquet, which can be glued on the adhesion layer optimally. Also can soft Top floor coverings such. B. carpet, PVC, linoleum adhering to the standard on the subfloor.

It can also be provided that the plate-shaped base support has a bottom, wherein on the bottom of an insulating layer, in particular a layer of an elastic, viscose-elastic or plastic material, can be attached. As a result, the impact sound can be contained. The impact sound, caused z. B. by kicks or even falling objects can therefore be effectively prevented from entering the subfloor, so as to direct acoustic interference in the bottom surface. It can thus be avoided the formation of a sound bridge. In addition, the insulating layer can compensate for small and medium unevenness of the ground. The insulating layer can also be configured as a thermal insulation layer. The insulating layer can be made of foamed polyethylene, polystyrene, polypropylene, ethyl vinyl acetate (EVA), latex or even rubbery material based on EPDM or TPE, mineral-filled polymers based on EPDM, EVA, PE, PP, TPE, latex or PU or a mixture exist. In addition, the shape of this insulating layer of fiber webs, made of natural and / or synthetic fibers. The execution of the insulating layer of cork and / or wood fibers is conceivable.

It is advantageous that the insulating layer has a material thickness of 0.2 mm to 10 mm or particularly preferably from 1 mm to 5 mm. Thus, different heights of the subfloor flooring can be made possible. The higher the material thickness of the insulation, the higher the insulating properties of the subfloor covering against impact sound or cold on the surface of the subfloor lining. In addition, the height of the entire floor structure, d. H. the subfloor flooring in conjunction with adhesive and flooring, depending on the material thickness of the insulating layer are designed so that different heights can be used from the top of the floor surface. In addition, materials can be used for the insulating layer, wherein for the benefit of sound insulation, an insulation against the floor surface can be achieved.

It is particularly advantageous that a tensile-stabilizing layer can be attached to the insulating layer on the upper side of the insulating layer and / or underside of the insulating layer and / or underside of the plate-shaped basic carrier. This can be counteracted a possible tipping of the subfloor covering by, for example, shrinking elastic floor coverings which are glued on top of the subfloor. When bonding ceramic floor coverings or natural stone slabs an additional decoupling layer consisting of a nonwoven fabric made of synthetic or natural fibers can be bonded after the manufacture of the underfloor covering to transfer any dimensional changes of the underfloor elements and thus the entire laid subfloor flooring in a rigid flooring, which otherwise could cause damage to the floor covering. This additional decoupling layer may have a material thickness of 0.3 mm to 3 mm or preferably 0.5 mm to 2 mm. The decoupling layer may comprise synthetic fibers such as glass, polyester, polyethylene, polypropylene, polyamide or even natural fibers, which are mechanically or chemically bonded together. In this case, the fibers used can have sufficient resistance to alkali, since many commercially available tile and natural stone adhesive can have a high alkali content due to cemental fractions. For bonding the decoupling layer on the subfloor element preferably commercially available, suitable adhesives can be used, whereby flexible adhesives can be used.

Furthermore, it is conceivable that the underbody element has on its upper side a partially or completely circumferential chamfer. This can effectively be prevented raising or rising of the surface in the edge region of the pressure applied by under certain circumstances under tension connected underbody elements. These jolts can be seen in thin, resilient floor coverings, which can affect the appearance of the laid floor covering. In addition, the circumferential bevel of the underbody elements in the production of a subfloor lining forms a V-shaped recess of the laid subfloor elements. This depression has no unfavorable optical influences on the flooring adhered thereto, since the adhesive used can fill this depression.

Instead of the completely circumferential bevel on the upper side of a subfloor element, a projection or nose may also be provided on one side of the subfloor element. This projection terminates flush with the top of a subfloor element and presses lightly on an adjacent subfloor element, thus safely avoiding a gap between the two subfloor elements. The projection is preferably arranged above the spring of a subfloor element and cooperates with a bevel of a connected subfloor element. For this purpose, a chamfer can be provided on one side of a subfloor element above the groove of the subfloor element. By this projection also a slight tensile force between two connected subfloor elements can be generated.

It may also be advantageously provided that on the adhesion layer or the plate-shaped base support for bonding a floor covering, for. As tiles, laminate, parquet, carpet, PVC, linoleum or the like, an adhesive can be applied, which couples the flooring with the plate-shaped base support without displacement. Different types of adhesives can be used. The shift-free attachment of the floor covering offers the advantage that the individual floor elements do not change their distance from one another over their service life. In addition, a higher stability of the entire floor structure occurs. Flexible adhesives can be used which allow a certain freedom of movement of the floor elements.

Furthermore, it is advantageous that, when coupling at least two subfloor elements, a V-shaped recess can be produced by the chamfer. This can be prevented in the case of a load on the subfloor lining a raising of the surface in the edge region. The V-shaped recess can fill the V-shaped recess by using an adhesive for attaching the flooring to the subfloor, so that no cavities under the actual flooring arise. In addition, the use of a flexible adhesive is conceivable that can absorb any occurring tensions between the underbody elements and release it again when relief.

Further measures and advantages of the invention will become apparent from the claims, the following description and the drawings. In the drawings, the invention is shown in several embodiments. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination. Show it:

1 a schematic plan view of an underbody element according to the invention,

2 a schematic plan view of a subfloor covering with several subfloor elements,

3 a schematic cross section through an inventive underbody element and

4 a schematic cross section through two interconnected underbody elements according to the invention.

In the 1 is a schematic plan view of an underbody element 10 shown. The underbody element 10 indicates a first page 30 a groove 34 on. On a second page 32 of the underbody element 10 is a spring 36 arranged. In this case, the subsoil element 10 adopt different geometric shapes. It can be like in 1 shown rectangular, but also be square or hexagonal. Likewise, other geometric shapes are conceivable, wherein the first and the second sides may also have a curvature.

In the 2 is a schematic plan view of a subfloor 20 shown, which consists of several rectangular subsoil elements 10 is composed and can be applied to a floor surface. In each case, the spring engages 36 a respective subsoil element 10 in the groove 34 another subsoil element 10 , whereby a positive cohesion of the underbody elements 10 with each other to a subfloor 20 can be produced. For underbody elements 10 those on other subfloor elements 10 adjacent, forms a V-shaped recess 60 out. By the tongue and groove connection, the underbody elements 10 in its horizontal plane 41 held. Due to the additional locking system are the connected underbody elements 10 not pull apart.

In the 3 is a schematic cross section through an inventive underbody element 10 shown. The underbody element 10 has a plate-shaped base support 12 on, on its surface 50 a layer of adhesion 52 is arranged. On this layer of liability 52 is an adhesive 62 applied. Through the glue 62 becomes the applied flooring 64 coupled without displacement. The flooring 64 is in the 3 shown for better understanding, this only after the spreading of the subfloor 20 is applied or glued. On the underbody element 10 is a circumferential chamfer 60 educated. The first side of the plate-shaped base carrier 12 has a groove 34 on top, with a notch 40 is provided. It is conceivable that several notches 40 in the groove 34 are incorporated, as in 4 shown. This can be the notches 40 at any point of the groove 34 are located. On the second side of the underbody element 10 in 3 is a spring 36 with a lead 42 arranged. Again, it is accordingly conceivable that geometrically complementary to the notches 40 the groove 34 several projections 42 are arranged. The aforementioned notches 40 form with the aforementioned projections 42 the locking system, which two adjacent and nested subfloor elements 10 at least form-fitting in the horizontal plane 41 combines. The plate-shaped base support 12 has a bottom 54 on, at the one zugstabilisierende layer 58 is arranged. Below the tension-stabilizing layer 58 is an insulating layer 56 arranged. It is conceivable that at the bottom 54 first the insulating layer 56 is arranged and in the course of this at the bottom of the insulating layer 56 the tension-stabilizing layer 58 , This can be a decoupled from the floor surface and impact sound insulating or heat-insulating underfloor 20 getting produced.

Instead of the chamfer 60 over the spring 36 in 3 or 4 may be provided a projection or a nose flush with the surface of the subfloor element 10 concludes. This projection can with the chamfer 60 over the groove 34 an adjacent subsoil element 10 cooperate and so a depression or gap between two connected subfloor elements 10 safely avoid.

In the 4 is a cross section of a schematic view of two coupled subfloor elements 10 shown. The feather 36 has concrete two projections 42 and fills the groove 34 with two complementary notches 40 completely off. As a result, a secure hold of the two subfloor elements 10 in a horizontal plane 41 created. A release of the two subfloor elements 10 in the direction 41 would require a great deal of effort and destruction of the locking system. The insertion of the subfloor element 10 with the spring 36 in the groove 34 of the other underbody element 10 can be simplified by the fact that the subfloor element 10 with the spring 36 at an angle in the groove 34 is introduced.

By connecting the two subfloor elements 10 forms in the present case, a V-shaped recess 66 through the existing chamfer 60 the two subfloor elements 10 out. Each plate-shaped base support 12 points at its top 50 a layer of adhesion 52 on. On the adhesion layer 52 is an adhesive 62 attached the floor covering 64 on the underbody element 10 without displacement. The flooring 64 is consistently above both subfloor elements 10 placed. Through the chamfer 60 , both floor elements 10 at its periphery, a V-shaped recess 66 educated. This V-shaped recess can through the adhesive 62 However, it is also conceivable that the V-shaped recess 66 remains free. On the bottom 54 the plate-shaped base support 12 is a tensile stabilizing layer 58 arranged. Below this tensile stabilizing layer 58 is an insulating layer 56 coupled. In this case, the tension-stabilizing layer 58 be formed multi-layered. The tension-stabilizing layer 58 can, as well as the adhesion layer 52 , evaporated, fired, baked, glued, sprayed, rolled or by a curing process, in particular with UV light on the base support 12 be applied.

Advantageously, the subfloor is 20 with the underbody elements according to the invention 10 applied floating on the floor surface. However, it is also possible that the underfloor flooring 20 is inextricably coupled with the bottom surface via an adhesive method. The floor surface can be a composite screed or a floating screed. Also comes the design of the subfloor flooring 20 on ready-built floors into consideration. On the subfloor 20 can then the new topping 64 such as As carpets, tile floors, wooden floors, linoleum, PVC floors, natural stone floors, parquet floors or the like are applied or glued.

LIST OF REFERENCE NUMBERS

10

Pan member

12

base support

20

Under Flooring

30

first page

32

second page

34

groove

36

feather

40

notch

41

horizontal plane

42

head Start

50

top

52

liability layer

54

bottom

56

damp course

58

Zugstabilisierende layer

60

chamfer

62

adhesive

64

Flooring

66

V-shaped recess

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202009017368 U1 [0002]

Claims (10)

Underbody element ( 10 ) with a plate-shaped base support ( 12 ) with at least a first ( 30 ) and at least one second page ( 32 ) for producing a subfloor lining ( 20 ) on a bottom surface, wherein the first side has a groove ( 34 ) and the second side a spring ( 36 ), which allow a tongue and groove connection, characterized in that a locking system for the tongue and groove joint of at least two subfloor elements ( 10 ) is provided, wherein the groove ( 34 ) at least one notch ( 40 ) and the spring ( 36 ) at least one projection ( 42 ), wherein the projection ( 42 ) complementary to the notch ( 40 ), so that two subfloor elements in the horizontal plane ( 41 ) are connectable to each other. Underbody element ( 10 ) according to claim 1, characterized in that the plate-shaped base support ( 12 ) a particular rigid material, such. As metal, compressed wood fiber, plastic, ceramic and / or the like and having a composite materials. Underbody element ( 10 ) according to claim 1 or 2, characterized in that the plate-shaped base support ( 12 ) an upper side ( 50 ), wherein on the upper side ( 50 ) an adhesion layer ( 52 ), for example, from cellulosic material, polymers, homogeneous polymers, natural fibrous material or synthetic fibrous material is attachable. Underbody element ( 10 ) according to claim 3, characterized in that the adhesion layer ( 52 ) is water-absorbent. Underbody element ( 10 ) according to one of the preceding claims, characterized in that the plate-shaped base support ( 12 ) an underside ( 54 ), wherein on the underside ( 54 ) an insulating layer ( 56 ), in particular a layer of an elastic, viscoelastic or plastic material, is attachable or can be arranged. Underbody element ( 10 ) according to one of the preceding claims, characterized in that the insulating layer ( 56 ) has a material thickness of 0.2 mm to 10 mm or more preferably from 1 mm to 5 mm. Underbody element ( 10 ) according to claim 6, characterized in that on the insulating layer ( 56 ) a tensile stabilizing layer ( 58 ) at the top of the insulating layer and / or underside of the insulating layer and / or underside of the plate-shaped base carrier ( 12 ) is attachable. Underbody element ( 10 ) according to one of the preceding claims, characterized in that the underbody element ( 10 ) on its upper side a partially or completely circumferential chamfer ( 60 ) having. Underbody element ( 10 ) according to one of the preceding claims, characterized in that on the adhesion layer ( 52 ) or the plate-shaped base support ( 12 ) for bonding a floor covering ( 64 ), z. As tiles, laminate, parquet, carpet, PVC or the like, an adhesive ( 62 ) is applicable, the flooring ( 64 ) with the plate-shaped base support ( 12 ) coupled without displacement. Underbody element ( 10 ) according to one of the preceding claims, characterized in that when coupling at least two subfloor elements ( 10 ) a V-shaped depression ( 66 ) through the chamfer ( 60 ) can be produced.

Images