EP3315690B1 - A floor support structure - Google Patents
A floor support structure Download PDFInfo
- Publication number
- EP3315690B1 EP3315690B1 EP17198747.2A EP17198747A EP3315690B1 EP 3315690 B1 EP3315690 B1 EP 3315690B1 EP 17198747 A EP17198747 A EP 17198747A EP 3315690 B1 EP3315690 B1 EP 3315690B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- level adjustment
- adjustment screw
- floor
- foot
- support structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 8
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 7
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 7
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 description 13
- 239000003292 glue Substances 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000002023 wood Substances 0.000 description 4
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- 150000002739 metals Chemical class 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/024—Sectional false floors, e.g. computer floors
- E04F15/02447—Supporting structures
- E04F15/02464—Height adjustable elements for supporting the panels or a panel-supporting framework
- E04F15/0247—Screw jacks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/02044—Separate elements for fastening to an underlayer
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/02044—Separate elements for fastening to an underlayer
- E04F2015/0205—Separate elements for fastening to an underlayer with load-supporting elongated furring elements between the flooring elements and the underlayer
- E04F2015/02055—Separate elements for fastening to an underlayer with load-supporting elongated furring elements between the flooring elements and the underlayer with additional supporting elements between furring elements and underlayer
- E04F2015/02061—Separate elements for fastening to an underlayer with load-supporting elongated furring elements between the flooring elements and the underlayer with additional supporting elements between furring elements and underlayer adjustable perpendicular to the underlayer
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/02044—Separate elements for fastening to an underlayer
- E04F2015/02105—Separate elements for fastening to an underlayer without load-supporting elongated furring elements between the flooring elements and the underlayer
- E04F2015/02127—Separate elements for fastening to an underlayer without load-supporting elongated furring elements between the flooring elements and the underlayer adjustable perpendicular to the underlayer
Definitions
- a floor construction of the above mentioned type is disclosed in WO 2010/140946 A1 , where the joists have vertical drill holes for the screws and where the screws are anchored to an underlying load-bearing support surface with fastening means in the form of nails, screws or plugs.
- a problem with these floor constructions is that the work with anchoring the level adjustment screws to the underlying load-bearing support surface is very time consuming, since holes need to be drilled in the support surface for anchoring the level adjustment screws with suitable fastening means in order to secure a stable floor joist construction that is anchored to the load-bearing support surface with the fastening means.
- the threaded area 17 of the level adjustment screw 2 is adapted to interact with the floor joist 21 so that the height of the floor joist 21 in relation to the underlying support surface 22 can be adjusted.
- the height of the floor joist 21 in relation to the support surface 22 can be adjusted by rotating the level adjustment screws 2 in relation to the floor joist 21.
- the threaded holes 25 of the floor joist 21 may have threads that are matching the threads of the threaded area 17 of the level adjustment screw 2.
- the threaded area 17 of the upper end 6b of the level adjustment screw 2 is attachable to the threaded hole 25.
- the threaded hole 25 in the floor joist 21 can simply be made by first drilling a hole through the floor joist 21 and thereafter thread the hole with a tapping tool.
- a threaded plug to which the level adjustment screw 2 is attached may be connected to a hole arranged in the floor joist 21.
- the level adjustment screws 2 may be manufactured in an assortment with different lengths in the direction along the axis X, so that shorter level adjustment screws 2 are used when there is a need for short distances between the underlying support surface 22 and the floor joists 21 and longer level adjustment screws 2 for longer distances. If the support surface 22 has a non-planar top surface with large variations, different lengths on the level adjustment screws 2 may be used in order to secure a level top surface of the floor joists 21.
- the foot 3 may be manufactured through an injection moulding process where the lower base part 4 and the upper connection part 5 first are formed and where the dampening layer 9 with the dampening layer protrusions 29 are formed in a second process step. Through this process, the dampening layer 9 is efficiently adhered to the lower base part 4 and the upper connection part 5.
- the foot may be manufactured in three discrete parts, the lower base part 4, the dampening layer 9 and the upper connection part 5, which parts are assembled with glue or other suitable fastening means to form the foot 3.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Floor Finish (AREA)
Description
- The present disclosure relates to a floor support structure for supporting a floor joist of an adjustable raised floor construction relative to an underlying support surface, where the floor support structure comprises a level adjustment screw and a foot.
- When building floors on uneven underlying support surfaces, such as for example a concrete surface, or when there is a need for ventilating a floor, it is often desired to build the floor at a distance above the underlying support surface. Such raised floor constructions could for example involve a system of floor joists on which the floor is built, where the floor joists are spaced apart in relation to the underlying support surface. To create the distance between the raised floor construction and the underlying support surface, level adjustment screws attached to the floor joists may be used. The floor joists may be provided with threaded holes or other means to which the level adjustment screws are attached and the lower part of the level adjustment screws are anchored to the underlying support surface. The height of the floor joist in relation to the underlying support surface can be adjusted by rotating the level adjustment screws.
- A floor construction of the above mentioned type is disclosed in
WO 2010/140946 A1 , where the joists have vertical drill holes for the screws and where the screws are anchored to an underlying load-bearing support surface with fastening means in the form of nails, screws or plugs. A problem with these floor constructions is that the work with anchoring the level adjustment screws to the underlying load-bearing support surface is very time consuming, since holes need to be drilled in the support surface for anchoring the level adjustment screws with suitable fastening means in order to secure a stable floor joist construction that is anchored to the load-bearing support surface with the fastening means. - Another problem with this type of raised floor constructions is that they do not provide a dampening function, which for example often is desired in office environments, laboratories or public buildings where there is a need for low noise and low vibration floor constructions.
-
US 8,397,443 B2 discloses a bar system for a floor construction, where the system is provided with a plurality of bars or joists, a level adjustment mechanism and a dampener. The bars are enclosing the level adjustment mechanisms, which level adjustment mechanisms include level adjustable projections adapted to project from the bars against a support structure. The floor construction described inUS 8,397,443 B2 is a complex, heavy and expensive construction, which also has the problem that the work with anchoring the level adjustment screws to the underlying support surface is very time consuming. -
- There is thus a need for an improved floor construction with a low-cost floor support structure with a dampening function, which structure is simple and fast to install and further is lightweight in construction.
- An object of the present disclosure is to provide a floor support structure where the previously mentioned problems are avoided. This object is at least partly achieved by the features of the independent claim. The dependent claims contain further developments of the floor support structure.
- The disclosure concerns a floor support structure for supporting a floor joist of an adjustable raised floor construction relative to an underlying support surface, where the floor support structure comprises a level adjustment screw extending in a direction along a longitudinal axis and a foot. The foot comprises a lower base part for holding the floor support structure to the underlying support surface and an upper connection part to which a lower end of the level adjustment screw is attachable, wherein the foot has a dampening layer arranged between the lower base part and the upper connection part. The upper connection part has a connection recess for the level adjustment screw. The foot has at least one flexible attachment member arranged to engage at least one connection member on the lower end of the level adjustment screw, so that the flexible attachment member and the connection member are arranged to prevent separation of the level adjustment screw from the foot in a direction along the longitudinal axis. The upper connection part has a tubular side wall and a lower wall forming the connection recess. The at least one flexible attachment member is made from a cut-out portion of the tubular side wall and has a protrusion arranged within the connection recess, where the protrusion is arranged to interact with the at least one connection member of the level adjustment screw, and where the at least one connection member is formed by a groove.
- Advantages with these features are that the floor support structure with this construction, involving a level adjustment screw and a foot, is simple and fast to install without the need for complicated and time consuming drilling operations when anchoring the floor support structure to the underlying support surface. The floor support structure provides a lightweight and stable support for the floor joist to the underlying support surface, which floor support structure is simple in construction and possible to produce at a low cost. Further, the floor support structure provides an efficient absorption of vibrations and shocks through the dampening layer, which often is desired in office environments, laboratories or public buildings where there is a need for low noise and low vibration floor constructions. The level adjustment screw is attached to the foot via the connection recess for easy mounting of the floor support structure, and in a way that prevents separation of the foot from the level adjustment screw in a direction along the longitudinal axis. This provides a convenient installation process of the floor support structure, where the foot and the level adjustment screw is attached to each other in a simple and efficient way. The level adjustment screw is attached to the foot via the connection recess for easy mounting of the floor support structure. The interaction between the protrusion and the groove gives a simple and stable connection between the level adjustment screw and the foot and makes the floor support structure easy to mount.
- According to a further aspect of the disclosure, the lower wall of the upper connection part is provided with at least one opening through which the dampening layer extends into the connection recess forming at least one dampening layer protrusion, so that a lower surface of the level adjustment screw is in direct contact with the at least one dampening layer protrusion. The direct contact between the lower surface of the level adjustment screw and the at least one dampening layer protrusion provides an efficient dampening of shocks and vibrations. The at least one dampening layer protrusion has the ability to absorb smaller vibrations and also to transfer vibrations into the dampening layer.
- According to a further aspect of the disclosure, the least one flexible attachment member and the at least one connection member are connecting the level adjustment screw to the foot so that they can withstand a separation force of at least 0.10 kN in a direction along the longitudinal axis. This secures that the level adjustment screw is firmly connected to the foot and that the floor support structure meets a high construction standard for the raised floor construction.
- According to an aspect of the disclosure, the lower end of the level adjustment screw is rotatably attachable to the connection part, so that the level adjustment screw can rotate about the longitudinal axis in relation to the foot. The rotatable attachment provides a simple and efficient installation process of the raised floor structure, where the distance between the floor joist and the support surface easily is adjusted by rotating the level adjustment screw in relation to the foot and the floor joist.
- According to a further aspect of the disclosure, the level adjustment screw has an elongated tubular shape extending in the direction along the longitudinal axis, where the level adjustment screw has an outer surface with a non-threaded area at the lower end and a threaded area arranged above the lower end, where the threaded area is adapted to interact with the floor joist. The tubular shape of the level adjustment screw is used to achieve a lightweight and material saving construction. The threaded area is used for efficient engagement of the level adjustment screw with the floor joist and the non-threaded area for a suitable attachment to the foot.
- According to an aspect of the disclosure, the lower base part has one or more attachment openings adapted for receiving fastening means anchoring the lower base part to the support surface. The one or more attachment openings are used for conveniently anchoring the foot to the support surface and are adapted for receiving fastening means such as nails or other suitable attachment means.
- According to another aspect, the dampening layer of the foot is made of an elastic material, such as for example a rubber material or an injection moulded thermoplastic elastomer (TPE). The elastic material gives the foot the ability to absorb shocks and vibrations in an efficient way.
- According to another aspect of the disclosure, the lower base part and the upper connection part of the foot is made of a plastic material or a fibre reinforced plastic material, such as for example a polyamide (PA). This selection of materials gives the foot a construction that is easy to manufacture with high strength.
- According to another aspect of the disclosure, the level adjustment screw is made of a plastic material or a fibre reinforced plastic material, such as for example glass fibre reinforced polypropylene (PPH) or a glass fibre reinforced polyamide (PA). The function of the level adjustment screw is to carry high loads from the floor construction. The use of a plastic material or a fibre reinforced plastic material, such as glass fibre reinforced polypropylene (PPH) or a glass fibre reinforced polyamide (PA), will give a lightweight and durable construction with high load bearing capability.
- The disclosure will be described in greater detail in the following, with reference to the attached drawings, in which
- Fig. 1a-b
- show schematically, in a perspective view, a floor support structure attached to a floor joist according to the disclosure;
- Fig. 2a-c
- show schematically, side-views of a floor support structure according to the disclosure;
- Fig. 3a-b
- show schematically, cross-sections of a floor support structure according to the disclosure;
- Fig. 4a-b
- show schematically, in a view from above, a foot and a level adjustment screw of the floor support structure according to the disclosure; and
- Fig. 5
- shows schematically, in a perspective view, a foot of the floor support structure according to the disclosure.
- Various aspects of the disclosure will hereinafter be described in conjunction with the appended drawings to illustrate and not to limit the disclosure, wherein like designations denote like elements, and variations of the described aspects are not restricted to the specifically shown embodiments, but are applicable on other variations of the disclosure.
-
Figures 1a and1b schematically show afloor support structure 1 for supporting afloor joist 21 of an adjustable raised floor construction relative to an underlying load-bearing support surface 22. Thefloor joist 21 may have an elongated shape and when building a flooring construction, a number offloor joists 21 are in a known way used to arrange a floor joist framework structure that supports floor covering materials, such as for example a subfloor panel structure and floor planks or a floor decking material. Other suitable covering materials may also be used depending on the floor construction. - The
support surface 22 could be any type of surface on which the raised floor construction should be built, such as for example a concrete surface, a wooden surface or even an outdoor ground surface. - The
floor joist 21 can be made of any suitable material and floor joists made of wood or profiled steel bars are commonly used within the building industry today. Other floor joist materials are also possible to use, as for example composite materials, laminated wood structures and other metals such as aluminium. Thefloor joist 21 may have a solid configuration, which is common when usingfloor joists 21 made of wood. The floor joist may also have a hollow or beam-like configuration. For example, a hollow steel construction where thefloor joist 21 has a hollow configuration with an upper wall, a lower wall and two side walls arranged between the upper wall and the lower wall may be used. - A raised floor construction is built at a distance above the
support surface 22, and this type of floor construction is commonly used when building floor constructions on uneven underlying support surfaces or when there is a need for ventilating a floor structure. Raised floor constructions may involve a system offloor joists 21 on which the floor is built, where the floor joists 21 are spaced apart in relation to theunderlying support surface 22. To create the distance between the floor joists 21 and the underlying support surface 22 a number of spaced apartsupport structures 1 are used, as shown infigure 1a . Thefloor support structure 1 according to the disclosure comprises alevel adjustment screw 2 that extends in a direction along a longitudinal axis X and afoot 3, as shown more in detail infigures 1b and3b . - The
floor joist 21 may be provided with threadedholes 25 or similar means to which the level adjustment screws 2 are engaged. The distances between the threadedholes 25 of thefloor joist 21 may be varied depending on the type of floor construction. The heavier load thefloor joist 21 should carry, the shorter distances between the threadedholes 25 may be needed in order to secure a stable and safe floor construction. The type offloor joist 21 used could also impact the distance needed between the threaded holes 25. A strong floor joist construction may be designed with longer distances between the threadedholes 25 than a weaker floor joist construction. As a non-limiting example for a floor joist made of wood, the distance between the threadedholes 25 and thus thefloor support structures 1 when attached to thefloor joist 21 may be about 300-800 mm. - When attached to the
floor joist 21, the extension of thelevel adjustment screw 2 is essentially orthogonal to the elongated extension of thefloor joist 21 as schematically shown infigures 1a and1b . This thus means that the direction of the longitudinal axis X is essentially orthogonal to the extension of thefloor joist 21. Thelevel adjustment screw 2 may also be arranged at another angle in relation to the extension of thefloor joist 21. -
Figures 2a-b and3a-b , show thefloor support structure 1 with thelevel adjustment screw 2 more in detail. Thelevel adjustment screw 2 has an elongated tubular shape with a length extending in the direction along the longitudinal axis X, with alower end 6a and anupper end 6b. Thelevel adjustment screw 2 has anouter surface 15, with anon-threaded area 16 at thelower end 6a and a threadedarea 17 arranged above thelower end 6a. Thenon-threaded area 16 at thelower end 6a only extends a small distance along the total length of thelevel adjustment screw 2 in the direction along the longitudinal axis X, so that the main part of theouter surface 15 along the longitudinal length of thelevel adjustment screw 2 is threaded. - The threaded
area 17 of thelevel adjustment screw 2 is adapted to interact with thefloor joist 21 so that the height of thefloor joist 21 in relation to theunderlying support surface 22 can be adjusted. The height of thefloor joist 21 in relation to thesupport surface 22 can be adjusted by rotating the level adjustment screws 2 in relation to thefloor joist 21. The threaded holes 25 of thefloor joist 21 may have threads that are matching the threads of the threadedarea 17 of thelevel adjustment screw 2. The threadedarea 17 of theupper end 6b of thelevel adjustment screw 2 is attachable to the threadedhole 25. The threadedhole 25 in thefloor joist 21 can simply be made by first drilling a hole through thefloor joist 21 and thereafter thread the hole with a tapping tool. As an alternative, a threaded plug to which thelevel adjustment screw 2 is attached may be connected to a hole arranged in thefloor joist 21. - When attaching the
level adjustment screw 2 to thefloor joist 21, theupper end 6b is screwed into the threadedhole 25 in thefloor joist 21. In this way, depending on how far thelevel adjustment screw 2 is screwed into thefloor joist 21, the length of thelevel adjustment screw 2 extending out from thefloor joist 21 can be varied and adapted to a certain height level for thefloor joist 21 in relation to thesupport surface 22. This means that the length of thelevel adjustment screw 2, in the direction along the longitudinal axis X, extending out from thefloor joist 21 can be adjusted by rotating thelevel adjustment screw 2 in relation to thefloor joist 21. The more thelevel adjustment screw 2 is screwed into thefloor joist 21, the shorter distance between thefloor joist 21 and thesupport surface 22. - The level adjustment screws 2 may be manufactured in an assortment with different lengths in the direction along the axis X, so that shorter level adjustment screws 2 are used when there is a need for short distances between the
underlying support surface 22 and the floor joists 21 and longer level adjustment screws 2 for longer distances. If thesupport surface 22 has a non-planar top surface with large variations, different lengths on the level adjustment screws 2 may be used in order to secure a level top surface of thefloor joists 21. As an alternative, if the level adjustment screws 2 are screwed far into the floor joists 21 so that the upper ends 6b extend above the upper surface of the floor joists 21, the part of the level adjustment screws extending above the upper surface of thefloor joist 21 may be cut in order to secure an even top surface of the floor joist construction. - Once inserted into the floor joists 21, the level adjustment screws 2 are possible to remove from the floor joists 21 by simply unscrewing them from the threaded
holes 25 if needed. After removal, the level adjustment screws 2 may again be screwed into thefloor joist 21. - The dimensions of the level adjustment screws 2 may be varied depending on the floor construction. As a non-limiting example, the level adjustment screws 2 may have a diameter of 20-40 mm and the total length may vary between 50-500 mm. The level adjustment screws may have a tubular-like configuration with a
hollow interior 27 as shown infigures 1b ,3a ,3b and4b . The tubular-like configuration of the level adjustment screws is used to achieve a lightweight and material saving construction. Thelower end 6a of thelevel adjustment screw 2 has alower surface 14, whichlower surface 14 may be made planar in order to interact with thefoot 3. - In
figure 4b thelevel adjustment screw 2 is shown in a view from above. Thelevel adjustment screw 2 has an essentially circular outer periphery with threads arranged on the threadedarea 17 of theouter surface 15. The hollow interior of the tube-like configuration is forming a recess, which in theupper end 6b may accommodate a tool for adjusting the height of thefloor support structure 1 in relation to thesupport surface 22 when thefloor support structure 1 is attached to thefloor joist 21. As shown infigure 4b , the cross-section of the hollow interior when viewed from above is hexagonal so that ahexagonal socket 28 for an Allen wrench is formed. Thelevel adjustment screw 2 may instead be designed with anupper end 6b of another configuration for other types of tools, for example with other shapes of thesocket 28. Further, the level adjustment screw may 2 as an alternative be made with a non-hollow or partly hollow interior. - The
level adjustment screw 2 can be made of any suitable material, such as for example plastic materials, metals or composite materials. Also combinations of different materials may be used. Specifically, thelevel adjustment screw 2 may be made of a plastic material or a fibre reinforced plastic material, such as for example glass fibre reinforced polypropylene (PPH) or a glass fibre reinforced polyamide (PA). To manufacture thelevel adjustment screw 2 an injection moulding process may be used. - The
level adjustment screw 2 is designed to interact with thefoot 3 so that thefoot 3 together with thelevel adjustment screw 2 is forming thefloor support structure 1. - The
foot 3 is shown more in detail infigures 2a ,3a ,4a and5 . Thefoot 3 comprises alower base part 4 for holding thefloor support structure 1 to theunderlying support surface 22 and anupper connection part 5 to which thelower end 6a of thelevel adjustment screw 2 is attachable. The bottom surface of thelower base part 4 is in direct contact with thesupport structure 22 when thefloor support structure 1 is mounted to thefloor joist 21 and when thefloor joist 21 together with thesupport structure 1 is put in its position on thesupport surface 22. The bottom surface of thelower base part 4 may be anchored to theunderlying support surface 22 with a suitable fastening means, such as for example adhesive tape,glue 26,nails 24 or other suitable attachment means. Thelower base part 4 is provided with one ormore attachment openings 23 adapted for receiving the fastening means such asnails 24 when anchoring thelower base part 4 to thesupport surface 22.Glue 26, shown infigure 3b , or adhesive tape may be attached to the bottom surface of thelower base part 4 before mounting thefloor support structure 1 to thesupport surface 22. The type of fastening means used should be chosen to match the material of theunderlying support surface 22. For aconcrete support surface 22, a concrete nail may for example be a suitable fastening means, which concrete nail may be fastened to thesupport surface 22 with a nail gun. Different types of construction adhesives or adhesive tapes may also be used depending on the type of underlying load-bearing support surface 22. A combination of fastening means may also be used, for example nails 24 in combination withglue 26 or adhesive tape. - The
upper connection part 5 of thefoot 3 has atubular side wall 10 and alower wall 11 forming aconnection recess 12 for thelevel adjustment screw 2, as for example shown infigures 4a and5 . When attaching thelevel adjustment screw 2 to thefoot 3, thelower end 6a of thelevel adjustment screw 2 is pushed into theconnection recess 12 so that thefoot 3 together with thelevel adjustment screw 2 is forming thefloor support structure 1, as shown infigures 2b and3b . - The
non-threaded area 16 of thelower end 6a of thelevel adjustment screw 2 is designed to match theconnection recess 12 of thefoot 3. When pushing thelevel adjustment screw 2 in the direction along the longitudinal axis X into thefoot 3, only thenon-threaded area 16 is interacting with theconnection recess 12. Since the inner part of thetubular side wall 10, which is forming the side edge of theconnection recess 12, has a circular shape, as can be seen infigures 4a and5 , and also the outer periphery of thelower end 6a of thelevel adjustment screw 2 has a circular shape, thelevel adjustment screw 2 may be possible to rotate in relation to thefoot 3. Thus, the diameter of the inner part of thetubular side wall 10, which is forming the side edge of theconnection recess 12, is larger than the diameter of the periphery of thelower end 6a of thelevel adjustment screw 2, so that a small gap is formed between theconnection recess 12 and thelower end 6a in the radial direction in relation to the longitudinal axis X. Thelower end 6a of thelevel adjustment screw 2 is through this arrangement rotatably attachable to theconnection part 5, so that thelevel adjustment screw 2 can rotate about the longitudinal axis X in relation to thefoot 3. Thelower surface 14 of thelevel adjustment screw 2 is in contact with the lower part of theconnection recess 12 of thefoot 3 when thelevel adjustment screw 2 is attached to thefoot 3 as will be further described below. - To secure that the
level adjustment screw 2 and thefoot 3 is securely attached to each other and not separated from each other in the direction along the longitudinal axis X, thetubular side wall 10 of theupper connection part 5 has at least oneflexible attachment member 7, which is arranged to engage at least oneconnection member 8 on thelower end 6b of thelevel adjustment screw 2. In this way, theflexible attachment member 7 and theconnection member 8 are arranged to prevent separation of thelevel adjustment screw 2 from thefoot 3 in a direction away from each other along the longitudinal axis X. - In the embodiment shown, the
foot 3 is provided with twoflexible attachment members 7 that are made from cut-outportions 18 of thetubular side wall 10 and thelevel adjustment screw 2 is provided with oneconnection member 8 in the form of agroove 20. Thegroove 20 is arranged slightly above thelower surface 14 so that thegroove 20 has a smaller diameter than the parts of thenon-threaded area 16 of thelevel adjustment screw 2 arranged above and below thegroove 20, as shown infigures 2a and3a . Theflexible attachment members 7 are formed so that they can flex outwardly when thelower end 6a of thelevel adjustment screw 2 is pushed into theconnection recess 12 and flex back again to their initial position when thelower end 6a of thelevel adjustment screw 2 is fully inserted into thefoot 3. Theflexible attachment members 7 each has aprotrusion 19 arranged within theconnection recess 12, as shown infigures 3a and5 . Theprotrusion 19 is arranged to interact with thegroove 20 forming theconnection member 8 of thelevel adjustment screw 2. - When the
level adjustment screw 2 is pushed into theconnection recess 12 of thefoot 3, the side edge of thelower surface 14 is pushing theflexible attachment members 7 in a direction radially outwards in relation to the longitudinal axis X through the interaction with theprotrusions 19. When thelevel adjustment screw 2 is pushed further into theconnection recess 12 so that theprotrusions 19 are aligned with thegroove 20, theflexible attachment members 7 are flexing back into their initial position so that theprotrusions 19 are in engagement with thegroove 20, as shown infigure 2b . When theprotrusions 19 and thegroove 20 are interacting, thelevel adjustment screw 2 is prevented from being separated from thefoot 3. When thelevel adjustment screw 2 and thefoot 3 are connected to each other, there is a small play between theprotrusions 19 and thegroove 20 so that thelevel adjustment screw 2 can rotate about the longitudinal axis X in relation to thefoot 3. - If needed, in order to separate the
foot 3 from thelevel adjustment screw 2, tools may for example be used to force theflexible attachment members 7 in a direction away from thegroove 20 of thelevel adjustment screw 2 so that they are no longer engaging thegroove 20 and then thelevel adjustment screw 2 is disengaged from the foot by pulling thelevel adjustment screw 2 in a direction along the longitudinal axis X away from thefoot 3. - As an alternative, the
level adjustment screw 2 may instead be provided with two ormore grooves 20 arranged above each other and the foot may be provided with a suitable number offlexible attachment members 7. If two ormore grooves 20 are used, theprotrusions 19 of two or moreflexible attachment members 7 may be arranged on different heights above thelower wall 11 for engagement withdifferent grooves 20. - To secure that the
level adjustment screw 2 is firmly connected to thefoot 3, thefloor support structure 1 may be designed so that theflexible attachment members 7 and theconnection member 8 are engaging thelevel adjustment screw 2 and thefoot 3 in a way so that they can withstand a specific separation force in a direction along the longitudinal axis X. The size of theflexible attachment members 7 and the design of theprotrusions 19 and thegroove 20 may be chosen so that this specific level of separation force can be met. In this way, theflexible attachment members 7 and theconnection member 8 are connecting thelevel adjustment screw 2 to thefoot 3 so that they can withstand a specific separation force in a direction along the longitudinal axis X. To meet a high construction standard of the floor system, thefloor support structure 1 may be designed to withstand a specific separation force in a direction along the longitudinal axis X of at least 0.10 kN. In this way a stable and reliable construction is achieved. Tests have shown that the specific separation force of at least 0.10 kN firmly connects thelevel adjustment screw 2 to thefoot 3, which gives a reliable connection. - The
lower base part 4 and theupper connection part 5 of thefoot 3 may be made as separate pieces of any suitable material, such as for example plastic materials, metals or composite materials. Also combinations of different materials may be used. Specifically, thelower base part 4 and theupper connection part 5 may be made of a plastic material or a fibre reinforced plastic material, such as for example polyamide (PA). - When building a raised floor construction, a key function of the
floor support structure 1 is to provide a dampening function, which is capable of taking up vibrations and shocks in the floor structure. This is for example often desired in office environments, laboratories or public buildings where there is a need for low noise and low vibration floor constructions. To secure an efficient absorption of shocks or vibrations, thefoot 3 of thefloor support structure 1 has a dampeninglayer 9 arranged between thelower base part 4 and theupper connection part 5. In this way, according to the embodiment shown, thefoot 3 is built up of three different separate components; thelower base part 4, the dampeninglayer 9 arranged above thelower base part 4 and theupper connection part 5 arranged above the dampening layer, as shown in for examplefigures 2b ,3b and5 . Thelower base part 4, the dampeninglayer 9 and theupper connection part 5 are together forming thefoot 3 as one common unit. - The dampening
layer 9 can be made of any suitable material that efficiently absorbs vibrations and shocks such as a suitable elastic material. - Specifically, the dampening
layer 9 with the dampeninglayer protrusions 29 may be made of an elastomer, such as for example a rubber material or an injection moulded thermoplastic elastomer (TPE), with high ability to absorb shocks and vibrations. Also combinations of different suitable materials may be used. - The dampening
layer 9 has a lower surface that is in direct contact with thelower base part 4 of thefoot 3 and an upper surface in direct contact with theupper connection part 5. With this construction, vibrations and shocks from the floor construction are transferred from the floor construction via the floor joists 21,level adjustment screw 2 and theupper connection part 5 of thefoot 3 to the dampeninglayer 9 where they are absorbed. - To further establish an efficient dampening of shocks and vibrations, the
lower wall 11 of theupper connection part 5 may be provided with at least oneopening 13 through which the dampeninglayer 9 extends into theconnection recess 12 forming at least one dampeninglayer protrusion 29 in the lower part of theconnection recess 12. As shown infigures 2b and3b , thelower surface 14 of thelevel adjustment screw 2 is in direct contact with the dampeninglayer protrusions 29. Infigure 4a , thelower wall 11 viewed from above is provided with six triangular-shapedopenings 13 through which the dampeninglayer protrusions 29 extend into theconnection recess 12. The parts of the dampeninglayer 9 extending through theopenings 13 and forming the dampeninglayer protrusions 29 may have approximately the same triangular-shape as theopenings 13 when viewed from above. The number of dampeninglayer protrusions 29 extending into theconnection recess 12 may be varied depending on the floor construction and the design of thefloor support structure 1. Theopenings 13 may have any suitable shape, such as for example circular, rectangular, oval, or a combination of different shapes. - The dampening
layer protrusions 29 has a relatively small contact area towards thelower surface 14 of the level adjustment screw so that shocks and vibrations can be absorbed quickly. The dampeninglayer protrusions 29 has the ability to absorb the energy of small vibrations and for larger vibrations or shocks, the dampeninglayer protrusions 29 are absorbing a part of the vibration energy and also transferring energy into the dampeninglayer 9 for efficient vibration or shock energy absorption. - In an alternative embodiment not shown in the figures, the
lower base part 4 and theupper connection part 5 may be connected to form one unit with the dampeninglayer 9 arranged within the unit so that the dampeninglayer 9 in the direction along the longitudinal axis X is located between lower part of thefoot 3, which is in contact with thesupport surface 22, and the upper part of the foot, which is connecting thefoot 3 to thelevel adjustment screw 2. - The
foot 3 may be manufactured through an injection moulding process where thelower base part 4 and theupper connection part 5 first are formed and where the dampeninglayer 9 with the dampeninglayer protrusions 29 are formed in a second process step. Through this process, the dampeninglayer 9 is efficiently adhered to thelower base part 4 and theupper connection part 5. As an alternative, the foot may be manufactured in three discrete parts, thelower base part 4, the dampeninglayer 9 and theupper connection part 5, which parts are assembled with glue or other suitable fastening means to form thefoot 3. - Before using the
floor support structure 1, thefoot 3 is connected to thelevel adjustment screw 2 in order to assemble thefloor support structure 1. A number offloor support structures 1 are thereafter installed into thefloor joist 21 through the threaded engagement between the threadedarea 17 of thelevel adjustment screw 2 and the threadedhole 25 of thefloor joist 21. Thefloor joist 21 with the installedfloor support structures 1 are placed in a desired position on thesupport surface 22 with thefoot 3 in contact with thesupport surface 22 as shown infigures 1a and1b . The distance between thefloor joist 21 and thesupport surface 22 is adjusted by rotating the level adjustment screws 2 about the longitudinal axis X in relation to thefloor joists 21. Thefoot 3 of each floor support structure may be anchored to thesupport surface 22 withnails 24,glue 26, adhesive tape, or other suitable fastening means so that thefloor joist 21 is firmly connected to thesupport surface 22. It may not be necessary to anchor allfloor support structures 1 to thesupport surface 22 depending on the type of floor construction. The distance between thefloor joist 21 and thesupport surface 22 may be further adjusted by rotating the level adjustment screws in relation to thefloor joist 21 and thefoot 3 with for example a suitable tool. Once the distance is set,further floor joists 21 withfloor support structures 1 may be arranged on thesupport surface 22 to establish a framework for the raised floor construction. Fine tuning of the distance between the floor joists 21 and thesupport surface 22 is easily achieved by rotating the level adjustment screws where needed. The dampeninglayer 9 and the dampeninglayer protrusions 29 of thefoot 3 provide a floor construction with a good ability to absorb shocks and vibrations. - It will be appreciated that the above description is merely exemplary in nature and is not intended to limit the present disclosure, its application or uses. While specific examples have been described in the specification and illustrated in the drawings, it will be understood by those of ordinary skill in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present disclosure as defined in the claims. Furthermore, modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from the essential scope thereof. Therefore, it is intended that the present disclosure not be limited to the particular examples illustrated by the drawings and described in the specification as the best mode presently contemplated for carrying out the teachings of the present disclosure, but that the scope of the present disclosure will include any embodiments falling within the foregoing description and the appended claims. Reference signs mentioned in the claims should not be seen as limiting the extent of the matter protected by the claims, and their sole function is to make claims easier to understand.
-
- 1:
- Floor support structure
- 2:
- Level adjustment screw
- 3:
- Foot
- 4:
- Lower base part
- 5:
- Upper connection part
- 6a:
- Lower end
- 6b:
- Upper end
- 7:
- Flexible attachment member
- 8:
- Connection member
- 9:
- Dampening layer
- 10:
- Tubular side wall
- 11:
- Lower wall
- 12:
- Connection recess
- 13:
- Opening
- 14:
- Lower surface
- 15:
- Outer surface
- 16:
- Non-threaded area
- 17:
- Threaded area
- 18:
- Cut-out portion
- 19:
- Protrusion
- 20:
- Groove
- 21:
- Floor joist
- 22:
- Support surface
- 23:
- Attachment opening
- 24:
- Nails
- 25:
- Threaded hole
- 26:
- Glue
- 27:
- Hollow interior
- 28:
- Socket
- 29:
- Dampening layer protrusions
Claims (9)
- A floor support structure (1) for supporting a floor joist (21) of an adjustable raised floor construction relative to an underlying support surface (22), the floor support structure (1) comprising a level adjustment screw (2) extending in a direction along a longitudinal axis (X) and a foot (3);where the foot (3) comprises a lower base part (4) for holding the floor support structure (1) to the underlying support surface (22) and an upper connection part (5) to which a lower end (6b) of the level adjustment screw (2) is attachable;where the foot (3) has a dampening layer (9) arranged between the lower base part (4) and the upper connection part (5), and wherein the upper connection part (5) has a connection recess (12) for the level adjustment screw (2),characterized in that the foot (3) has at least one flexible attachment member (7) arranged to engage at least one connection member (8) on the lower end (6b) of the level adjustment screw (2), so that the flexible attachment member (7) and the connection member (8) are arranged to prevent separation of the level adjustment screw (2) from the foot (3) in a direction along the longitudinal axis (X),where the upper connection part (5) has a tubular side wall (10) and a lower wall (11) forming the connection recess (12), where each of the at least one flexible attachment member (7) is made from a cut-out portion (18) of the tubular side wall (10) and has a protrusion (19) arranged within the connection recess (12), where the protrusion (19) is arranged to interact with the at least one connection member (8) of the level adjustment screw (2), and where the at least one connection member (8) is formed by a groove (20).
- A floor support structure (1) according to claim 1,
characterized in that the lower wall (11) of the upper connection part (5) is provided with at least one opening (13) through which the dampening layer (9) extends into the connection recess (12) forming at least one dampening layer protrusion (29), so that a lower surface (14) of the level adjustment screw (2) is in direct contact with the at least one dampening layer protrusion (29). - A floor support structure (1) according to claim 1 or 2,
characterized in that the least one flexible attachment member (7) and the at least one connection member (8) are connecting the level adjustment screw (2) to the foot (3) so that they can withstand a separation force of at least 0.10 kN in a direction along the longitudinal axis (X). - A floor support structure (1) according to any of claims 1 to 3,
characterized in that the lower end (6b) of the level adjustment screw (2) is rotatably attachable to the connection part (5), so that the level adjustment screw (2) can rotate about the longitudinal axis (X) in relation to the foot (3). - A floor support structure (1) according to any of claims 1 to 4,
characterized in that the level adjustment screw (2) has an elongated tubular shape extending in the direction along the longitudinal axis (X), where the level adjustment screw (2) has an outer surface (15) with a non-threaded area (16) at the lower end (6b) and a threaded area (17) arranged above the lower end (6b), where the threaded area (17) is adapted to interact with the floor joist (21). - A floor support structure (1) according to any claims 1 to 5,
characterized in that the lower base part (4) has one or more attachment openings (23) adapted for receiving fastening means (24) anchoring the lower base part (4) to the support surface (22). - A floor support structure (1) according to any of claims 1 to 6,
characterized in that the dampening layer (9) of the foot (3) is made of an elastic material, such as for example a rubber material or an injection moulded thermoplastic elastomer (TPE). - A floor support structure (1) according to any of claims 1 to 7,
characterized in that the lower base part (4) and the upper connection part (5) of the foot (3) is made of a plastic material or a fibre reinforced plastic material, such as for example a polyamide (PA). - A floor support structure (1) according to any of claims 1 to 8,
characterized in that the level adjustment screw (2) is made of a plastic material or a fibre reinforced plastic material, such as for example glass fibre reinforced polypropylene (PPH) or a glass fibre reinforced polyamide (PA).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1651413A SE540180C2 (en) | 2016-10-28 | 2016-10-28 | A floor support structure |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3315690A1 EP3315690A1 (en) | 2018-05-02 |
EP3315690B1 true EP3315690B1 (en) | 2020-09-23 |
Family
ID=60190687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17198747.2A Active EP3315690B1 (en) | 2016-10-28 | 2017-10-27 | A floor support structure |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3315690B1 (en) |
DK (1) | DK3315690T3 (en) |
ES (1) | ES2837439T3 (en) |
SE (1) | SE540180C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3812534B1 (en) | 2019-10-23 | 2023-12-13 | GRANAB Förvaltning AB | Floor support system with dampening |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09195484A (en) * | 1996-01-17 | 1997-07-29 | Hayakawa Rubber Co Ltd | Pedestal for double flooring supporting leg |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3958625B2 (en) * | 2002-05-13 | 2007-08-15 | 修司 遠藤 | Double floor foot member soundproofing equipment |
US8156694B2 (en) * | 2009-07-31 | 2012-04-17 | United Construction Products, Inc. | Support pedestal for supporting an elevated building surface |
JP5383440B2 (en) * | 2009-11-09 | 2014-01-08 | 修司 遠藤 | Soundproof foot member for double floor and double floor |
US8397443B2 (en) * | 2009-12-02 | 2013-03-19 | Bygg-Och Miljoteknik Granab Ab | Bar system |
EP2354371A1 (en) * | 2010-01-22 | 2011-08-10 | Subfloor ApS | Support system for a floor |
WO2014086423A1 (en) * | 2012-12-06 | 2014-06-12 | Bygg- Och Miljöteknik Granab Ab | A bar system for building constructions |
EP2910707B1 (en) * | 2014-02-24 | 2018-04-11 | ZÜBLIN Timber Aichach GmbH | Support element for a double or false floor |
-
2016
- 2016-10-28 SE SE1651413A patent/SE540180C2/en unknown
-
2017
- 2017-10-27 ES ES17198747T patent/ES2837439T3/en active Active
- 2017-10-27 EP EP17198747.2A patent/EP3315690B1/en active Active
- 2017-10-27 DK DK17198747.2T patent/DK3315690T3/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09195484A (en) * | 1996-01-17 | 1997-07-29 | Hayakawa Rubber Co Ltd | Pedestal for double flooring supporting leg |
Also Published As
Publication number | Publication date |
---|---|
DK3315690T3 (en) | 2020-12-07 |
SE1651413A1 (en) | 2018-04-24 |
ES2837439T3 (en) | 2021-06-30 |
EP3315690A1 (en) | 2018-05-02 |
SE540180C2 (en) | 2018-04-24 |
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