EP4077833B1 - Substructure for flooring - Google Patents

Description

The present invention relates to a substructure for a floor covering, with a base element that can be set down on a subsurface, a height-adjustable support element for holding a beam on which the floor covering can be mounted, the support element having at least one rotatable element provided with an internal thread and an external thread Intermediate element is supported in a height-adjustable manner on the base element.

The EP 2 754 773 B1 discloses a substructure for a floor covering, in which a block that can be parked on the ground is provided, to which a holder can be attached at different heights. A beam to support the floor covering can be mounted at the required height using the holder. The holder is also secured against vertical lifting upwards. With the block, however, only small height differences can be compensated in a predetermined grid.

The EP 2 734 685 B1 discloses a floor structure in which a plurality of panels are resiliently mounted on a substructure. For this purpose, the substructure comprises an elastically mounted beam, which is secured against lifting by means of a fastener. The substructure has no adjustment mechanism for aligning the height, which is disadvantageous when laying the floor covering with a predetermined inclination.

WO 2008 / 105012 A1 discloses a raised flooring support system in which height adjustable supports having a plurality of threaded portions are provided to support a joist. A similar support system is also disclosed WO 2007/048 204 A1 .

DE 10 2013 109 845 A1 discloses a bearing for a substructure for a terrace, which is adjustable in height via threaded parts.

In the FR 2 702 506 A1 discloses a multi-part carrier for supporting a floor covering, in which sleeve-shaped parts each comprise an external and an internal thread for height adjustment.

EP 2 816 173 A2 discloses a height adjustable deck support device.

GB 2 425 548 A discloses threaded members for supporting a floor.

It is therefore the object of the present invention to create a substructure for a floor covering that allows height adjustment over a large distance and is easy to assemble.

This problem is solved with a substructure for a floor covering with the features of claim 1.

In the floor covering according to the invention, the support element is supported on the base element in a height-adjustable manner via at least one rotatable intermediate element provided with an internal thread and an external thread. As a result, the height of the support element can be continuously adjusted relative to the base element by turning the intermediate member, with axial adjustment being able to take place both via the internal thread and the external thread in order to enable a comparatively large axial movement by a rotary movement. The height of the support element can thus be adjusted in a simple manner, for example in order to adjust a gradient in the floor covering.

The support element is preferably secured with the beam against lifting. Especially with a floor covering laid outdoors outside of a building, wind loads can create a suction effect against which the floor covering must be secured. For this purpose, the floor covering can be fixed to the beam and/or the support element using appropriate fastening means.

For easy assembly, the adjustment path of the support element from the highest position to the lowest position can be at least 120 mm, in particular between 180 mm and 300 mm. As a result, even larger bumps in a substrate can be compensated. In addition, the bar can preferably be mounted on the support element in the lowest position with a height of less than 40 mm, in particular between 25 mm and 36 mm, so that a flat structure is also possible.

According to a first variant of the invention, the base element comprises a groove-shaped receptacle into which the beam can be inserted in the lowest position of the support element. As a result, the base element can have a large-volume structure, in particular in order to provide sufficient intrinsic weight and to avoid lifting of the floor covering in the event of corresponding wind forces. The deepest position of the support element can be positioned close to the ground due to the groove-shaped receptacle, although the base element has sufficient inherent weight to prevent the floor covering from being lifted by the wind. Between 3 and 10, in particular 4 to 6 base elements can be arranged per square meter for laying the floor covering. This means that the floor covering can be laid in a floating manner, i.e. without fasteners that have to be installed in the subsurface. This means that it can also be easily laid on a roof without damaging the roof skin.

In a preferred embodiment, the at least one intermediate member is designed as a sleeve. The intermediate member can have both an internal thread and an external thread on the sleeve, with the threads not having to be continuous over the entire circumference, but these can also be provided in sections or interrupted. Between the base element and the support element, a plurality of interlocking intermediate links can be provided, for example two, three or four intermediate links, which can each be adjusted relative to one another one after the other by turning, so that the topmost intermediate link is supported on one or more lower intermediate links and the bottommost intermediate link is held on a thread of the base element.

The base element preferably has an internal thread on a circular receptacle into which the at least one intermediate link, in particular all the intermediate links, can be inserted in the lowest position. According to a second variant according to the invention, the intermediate members can each have a recess on opposite sides for the passage of the beam, so that a particularly compact construction is possible. The intermediate members can be made of plastic and have an integrally formed internal and external thread. The uppermost intermediate link can have a lower height than the lower intermediate links since it is fixed to the uppermost intermediate link.

In a preferred embodiment, the weight of the base element is more than 2 kg, in particular between 2 kg and 10 kg, for example 3 to 6 kg. As a result, the substructure can have sufficient dead weight to be parked loosely on a subsurface and at the same time to prevent the floor covering from lifting under normal wind loads. The weight of the base element can essentially be provided by the filling material, for example sand or concrete. The filling material can then be introduced into one or more hollow chambers or receptacles on the plastic molding.

The support element preferably has a support which is pivotably mounted via a bearing element, a spring element or a spherical cap. This allows the beam to be aligned in different directions, depending on the direction in which a slope or an unevenness needs to be compensated for. The pivotability is preferably not only about one axis, but pivotability is preferably possible in several directions, for example via a hollow dome.

The support element preferably has a first part which is in engagement with the intermediate member via a thread and a second part which is rotatably mounted on the first part and has a support for the beam. As a result, the first part can be rotated for height adjustment, in order to then subsequently rotate one or more intermediate links until a corresponding stop on the first part or the intermediate links is reached. After the stop has been reached, the respective next intermediate link is then set in rotary motion when the first part is rotated. For this purpose, a corresponding tool holder can be formed on the first part, for example an Allen key, slot or cross slot.

For easy pivoting on the support element, the first part of the support element can have a spherical cap on which a receptacle for a second part of the support element is held. This allows a pivoting movement, for example by at least 7°, to be carried out in different directions.

For a simple fixation of a bar on the support element, the support element can have two snap-in hooks which enclose a section of the bar in a U-shape. The snap-in hooks can have a hook-shaped section in engage a groove or receptacle of the beam and thus secure it against lifting.

Figuren 1A und 1B

zwei perspektivische Ansichten einer erfindungsgemäßen Unterkonstruktion in einer unteren Position;

Figuren 2A und 2B

zwei Ansichten der Unterkonstruktion der Figur 1;

Figuren 3A und 3B

zwei Ansichten der Unterkonstruktion der Figur 1, teilweise im Schnitt;

Figuren 4A und 4B

zwei perspektivische Ansichten der Unterkonstruktion der Figur 1 in einer ausgefahrenen Position;

Figuren 5A und 5B

zwei Seitenansichten der Unterkonstruktion der Figur 4, und

Figuren 6A und 6B

zwei Ansichten der Unterkonstruktion der Figur 4, teilweise im Schnitt.

The invention is explained in more detail below using an exemplary embodiment with reference to the attached drawings. Show it:

Figures 1A and 1B

two perspective views of a substructure according to the invention in a lower position;

Figures 2A and 2B

two views of the substructure of the figure 1 ;

Figures 3A and 3B

two views of the substructure of the figure 1 , partly in section;

Figures 4A and 4B

two perspective views of the substructure figure 1 in an extended position;

Figures 5A and 5B

two side views of the substructure figure 4 , and

Figures 6A and 6B

two views of the substructure of the figure 4 , partly on average.

A substructure 1 for a floor covering comprises a base element 2 and a support element 3 which is held on the base element 2 in a height-adjustable manner. In the Figures 1A and 1B the substructure 1 is shown in a lowered position in which the support element 3 is accommodated within the base element 2 .

The base element 2 is a molded part, in particular with a plastic body that is filled with a filling material such as concrete or sand, so that the base element has a weight of between 2 kg and 10 kg, in particular between 3.5 and 7 kg. For this purpose, an inner receptacle 21 is formed on the base element 2, into which concrete can be poured. Optionally, corresponding receptacles for filling material can also be formed on the upper side. Instead of being poured, the filling material can also be introduced loosely onto or into the base element 2 . In addition, projections and receptacles can also be provided for better stacking of several base elements 2 on top of one another.

As seen from the bottom view of the Figure 1B As can be seen, the base element comprises an annular receptacle 22 which, in the lowermost position of the support element 3, surrounds a plurality of intermediate members 5, 6 and 7. The intermediate members 5, 6 and 7 are male-threaded on their outside and female-threaded on their inside, respectively, and are engaged with each other.

The base element 2 comprises according to Figures 2A and 2B on its upper side a groove-shaped receptacle 20 into which, in the lowermost position of the support element 3, a strip-shaped beam 4 can be inserted. As a result, the height h of a bearing surface of the support element is between 20 mm and 50 mm, in particular 30 mm and 40 mm, above the ground.

In Figure 2B the substructure 1 is shown with a beam 4 which is supported on the support element 3 . For this purpose, the support element 3 comprises two latching hooks 30 which engage in a lateral groove of the beam 4 with a hook 31 at the end. As a result, a lower section of the beam 4 is surrounded by the two latching hooks 30 in a U-shape, and the beam 4 is secured against lifting by the latching hooks 30, for example because wind loads act on the beam 4 via the floor covering. A floor covering, for example panels for a terrace, can be attached to the beam 4 .

As in the Figures 3A and 3B is shown, the intermediate members 5, 6 and 7 are essentially sleeve-shaped. A lower intermediate member 5 has a lower ring 53 or several annularly arranged sections, which has an external thread which engages with an internal thread 23 on the base part 2 . The external thread is shorter in the axial vertical direction than an internal thread 52 which extends from the ring 53 to an upper inwardly projecting stop 51 .

The intermediate member 6 also comprises a lower ring 63 with an external thread and an internal thread 62 which is limited at the upper end by a stop 61 projecting inwards.

Another intermediate member 7 comprises a lower ring 73 with an external thread and an internal thread 72, which extends in the axial direction somewhat shorter than the internal threads 52 and 62 in the intermediate members 6 and 7. The intermediate member 7 also ends at the top with an inwardly projecting stop 71

As in Figure 3B As can be seen, all intermediate members 5, 6 and 7 are provided on opposite sides with a recess for the passage of the beam 4, so that the beam 4 in the lowest position is essentially in the groove-shaped receptacle 20 of the base element 2 and the recesses of the intermediate members 5, 6 and 7 is included. A support 32 of the support element 3 is therefore located within the base element 2.

In Figure 3B It can also be seen that the support element 3 is formed from a first part 8 which is in engagement with the internal thread 72 of the intermediate member 7 with an external thread. The first part 8 has an upwardly projecting cap 9 to which the second part of the support element 3 is fixed with the support 32 . A receptacle 33 is provided for this purpose, which surrounds the spherical cap 9 . In the spherical cap 9 there is also a tool holder 10 in the form of an Allen key, so that to adjust the height of the support element 3 the first part 8 of the support element 3 can be rotated until it strikes the stop 71 of the intermediate member 7 . Then, when the first part 8 of the support element 3 is rotated further, the intermediate member 7 is rotated relative to the further intermediate member 6 until the intermediate member 7 strikes the stop 61 . A further rotation of the first part 8 causes the intermediate member 6 to rotate until it strikes the stop 51 of the intermediate member 5 . By rotating the first part 8 further, the intermediate member 5 can then be rotated until its external thread 53 strikes a stop of the internal thread 23 .

In the Figures 4A and 4B the substructure 1 is shown in the maximum extended position in which the support element 3 with the support 32 is arranged at a height of between 100 mm and 400 mm, in particular 200 mm and 300 mm, above the ground. It can be seen that the intermediate member 5 has a recess 50 on opposite sides, the intermediate member 6 has a recess 60 and the intermediate member 7 has a recess 70 for the passage of the beam 4 in the lowered position. The intermediate links 5, 6 and 7 are no longer nested one inside the other, as in figure 1 , but protrude from each other and only engage with each other in the area of the external threads on the rings 53, 63 and 73. Due to the considerable weight of the base element 2, the support element 3 is held firmly on a subsurface, even if suction forces act on the beam 4 on a floor covering.

In Figure 4B the internal thread 23 can be seen on the base element 2 , which is formed integrally and has a recess 24 in the region of the strip-shaped receptacle 20 . An internal thread 52 of the intermediate member 5 is arranged offset above the internal thread 23 .

In the Figures 5A and 5B it can be seen that the external thread on the ring 63 of the intermediate member 6 protrudes in the area of the recess 50, but is otherwise held on the internal thread 52 of the intermediate member 5. Similarly, the protruding external thread on the ring 73 of the intermediate element 7 can be seen in the region of the recess 60 in the intermediate element 6 , which otherwise engages with the internal thread 62 of the intermediate element 6 . The uppermost intermediate member 7 also has a recess 70 in which the protruding external thread on the outer circumference of the first part 8 can be seen, which engages with the internal thread 72 of the intermediate member 7 .

The first part 8 of the support element 3 has not only the centrally arranged tool holder 10 but also further openings 80 which are used in particular for drainage.

In Figure 6B Figure 1 shows the substructure 1 in section and it can be seen that the intermediate members 5, 6 and 7 have each been rotated up to the corresponding stops 51, 61, 71 in order to reach the maximum raised position.

By mounting the support element 3 on the cap 9, the support 32 can be pivoted in different directions, for example to create a slope or to compensate for unevenness on the ground. The pivoting range of the support 32 relative to the spherical cap 9 can be at least 10° in all directions, for example.

The substructure 1 shown is used in particular for laying floor coverings, such as terraces, outdoors. The beam 4 then serves as a support for panels that are laid essentially perpendicular to the longitudinal direction of the beam 4 . Instead of panels, other covering elements, such as plates, can also be laid on the beam 4, with the floor covering being laid in a floating manner and being secured against lifting off the beam 4 by its own weight. Then the floor covering cannot be lifted by wind forces without the substructure 1 with the heavy base elements 2 being lifted at the same time.

In the exemplary embodiment shown, the support element 3 has two latching hooks 30 for laying the beam 4, into which the beam 4 can be pushed or plugged. Of course, other fastening means can also be used in order to fix a beam 4 to the support element 3 .

In addition, the base element 2 can also be produced from a solid material made of concrete or another cast material instead of as a molded body made of plastic with a filling material. Furthermore, the base element can also be produced by extrusion.

The beam 4 and optionally also the base element 2 can be produced, for example, from a mixture of a polymer material with fillers, in particular fibers containing lignocellulose. This allows outdoor use due to the weather resistance of the material.

In the illustrated embodiment, an internal thread is formed on the base element 2, in which three intermediate members 5, 6, 7 can be accommodated. It is of course also possible to provide only one intermediate member, two intermediate members or more than three intermediate members on the base element 2 .

In addition, it is possible to form the first part 8 integrally with the uppermost link 7 in order to increase the stability of this unit. The first part 8 can optionally also be formed integrally with the support 32 which can then only be pivoted via the elasticity of the first part 8 .

Reference List

1

substructure

2

base element

3

support element

4

bar

5

intermediary

6

intermediary

7

intermediary

8th

first part

9

cap

10

tool holder

20

Recording

21

Recording

22

Recording

23

inner thread

24

recess

30

latch hook

31

Hook

32

edition

33

Recording

50

recess

51

attack

52

inner thread

53

ring

60

recess

61

attack

62

inner thread

63

ring

70

recess

71

attack

72

inner thread

73

ring

80

opening

H

Height

Claims (14)

1. Substructure (1) for a floor covering, comprising a base element (2) which can be placed on an underlying surface, a support element (3) which can be adjusted in height for holding a beam (4), on which the floor covering can be mounted, wherein the support element (3) is supported in a height-adjustable manner on the base element (2) by means of at least one rotatable intermediate member (5, 6, 7) which is provided with an internal thread and an external thread, characterized in that a recess (50, 60, 70) for the passage of the beam (4) is formed in the at least one intermediate member (5, 6, 7) on opposite sides and/or the base element (2) has a groove-shaped receptacle (20) into which the beam (4) can be inserted in the lowest position of the support element (3).
2. Substructure according to claim 1, characterized in that the support element (3) secures the beam (4) against lifting via retaining means (30).
3. Substructure according to claim 1 or 2, characterized in that the at least one intermediate member (5, 6, 7) is designed as a sleeve.
4. Substructure according to one of the preceding claims, characterized in that a plurality of interlocking intermediate members (5, 6, 7) are provided between the base element (2) and the support element (3).
5. Substructure according to one of the preceding claims, characterized in that the base element (2) has an internal thread (23) on a circular receptacle and the at least one intermediate member (5), in particular all intermediate members (5, 6, 7), is or are insertable into the circular receptacle.
6. Substructure according to one of the preceding claims, characterized in that the at least one intermediate member (5, 6, 7), in particular all intermediate members (5, 6, 7), is or are made of plastic.
7. Substructure according to one of the preceding claims, characterized in that the weight of the base part (2) is between 2 kg and 10 kg, in particular between 3 to 7 kg.
8. Substructure according to one of the preceding claims, characterized in that the adjustment travel of the support element (3) from the highest position to the lowest position is at least 120 mm, in particular between 180 mm to 300 mm.
9. Substructure according to one of the preceding claims, characterized in that the support element (3) comprises a first part (8) engaged with the uppermost intermediate member (7) via a thread and a rotatable second part mounted on the first part (8) and having a support (32) for the beam (4).
10. Substructure according to claim 9, characterized in that a tool receptacle (10) for rotating the first part (8) and/or the at least one intermediate member (5, 6, 7) is provided in the first part (8).
11. Substructure according to claim 4 and one of the preceding claims, characterized in that the uppermost intermediate member (7) has a lower height than the intermediate members (5, 6) arranged thereunder.
12. Substructure according to one of the preceding claims, characterized in that two latching hooks (30) are formed on the support element (3), which engage around a section of the beam (4) in a U-shaped manner and secure it against lifting.
13. Substructure according to one of the preceding claims, characterized in that the base element (2) has a molded body, in particular a hollow body made of plastic.
14. Substructure according to one of the preceding claims, characterized in that the base element (2) is weighted with a filling material, such as sand and/or concrete, or is at least partially made of the same.

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