EP0705950A1 - False floors - Google Patents

False floors Download PDF

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Publication number
EP0705950A1
EP0705950A1 EP95102203A EP95102203A EP0705950A1 EP 0705950 A1 EP0705950 A1 EP 0705950A1 EP 95102203 A EP95102203 A EP 95102203A EP 95102203 A EP95102203 A EP 95102203A EP 0705950 A1 EP0705950 A1 EP 0705950A1
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EP
European Patent Office
Prior art keywords
floor
floor according
depressions
filler
raised floor
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Granted
Application number
EP95102203A
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German (de)
French (fr)
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EP0705950B1 (en
Inventor
Reinhard Stief
Hans Heckmann
Manfred Wagner
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Carl Freudenberg KG
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Carl Freudenberg KG
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Publication of EP0705950A1 publication Critical patent/EP0705950A1/en
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    • 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
    • E04F15/02405—Floor panels
    • E04F15/02417—Floor panels made of box-like elements
    • E04F15/02423—Floor panels made of box-like elements filled with core material
    • E04F15/02429—Floor panels made of box-like elements filled with core material the core material hardening after application

Definitions

  • the invention relates to a cavity floor, comprising a profiled intermediate floor, which is arranged between an upper and a lower floor and is plate-shaped, the intermediate floor having pot-shaped depressions which are connected to one another by essentially flat edge regions.
  • Such a cavity floor is known from DE 36 37 987 A1.
  • the previously known cavity floor has a screed-filled and covered profiled floor film with truncated cone-shaped support feet, the floor film adapting to unevenness in the sub-floor and being accessible.
  • the floor film forms a formwork for the screed material to be applied, which forms the top floor.
  • the floor film is plate-shaped and as thin as possible, so that adjacent film plates can be placed loosely one above the other at their edges without any steps occurring in the screed layer.
  • the invention has for its object to develop a cavity floor of the known type such that internal stresses in the screed, which forms the top floor, are avoided and that the screed has a shorter drying time.
  • the cavity floor is also said to have improved impact sound insulation.
  • the depressions are filled with a sound-absorbing filler.
  • the sub-floor mostly consists of concrete, to which liquid screed material is applied to create the top floor, with the interposition of the intermediate floor.
  • the intermediate floor is accessible so that the viscous screed material can be smoothed out if necessary.
  • the intermediate floor is formed by a floor film made of polymeric material, which can preferably be produced by deep drawing.
  • the filler within a depression preferably has a load capacity of at least 4000 N. This ensures that the floor film can be walked on even if its thickness is less than 1 mm.
  • the filler has good inherent stiffness and can therefore withstand high loads.
  • the force acting on the intermediate floor is essentially absorbed by the filler.
  • the filler can be held in the recesses in an adhesive and / or form-fitting manner.
  • the filler interlocking with the adjoining surfaces of the floor foil during curing and thereby being held in its position in a form-fitting manner.
  • the filler and the openings of the connections adjacent edge areas are formed flush with the surface.
  • the accessibility of the intermediate floor is made considerably easier by such a configuration.
  • the edge regions can each be provided with at least one bead in order to improve their dimensional stability, at least two beads preferably being used which intersect one another at an angle of essentially 90 °.
  • the increased dimensional stability makes it easier to lay the intermediate floor on the sub-floor.
  • the filler is preferably formed by a PU foam.
  • the bulk density of the filler is 50 to 120, preferably 60 to 100 kg / m3 for most applications.
  • Such a filler has a comparatively high load-bearing capacity, prevents screed from penetrating into the recesses and provides good impact sound insulation when walking on the cavity floor.
  • the filler can also be formed, for example, by a one-piece rubber cork body, which is inserted into a depression and is adhesively connected to it, for example.
  • the rubber cork bodies preferably consist of recycled components that are pressed together.
  • the advantage here is that the mezzanine floor is particularly economical to manufacture from an economic point of view.
  • the depressions are each designed to match and that the ratio of the largest diameter and height is 0.6 to 1.8, preferably 0.8 to 1.2. Due to the essentially square design of the depressions when viewed in cross section, the intermediate floor has a high degree of load-bearing capacity, and buckling of the depressions is reliably avoided even when transverse forces are introduced, for example when walking on the intermediate floor to apply the screed.
  • a further improvement in the mechanical strength and load-bearing capacity can be achieved in that the depressions are frustoconical and are provided with stiffening ribs which extend along the entire height of the depressions and are evenly distributed in the circumferential direction.
  • the recesses which taper in the shape of a truncated cone in the direction of the subfloor also result in a relatively enlarged cavity for laying connecting cables and hoses in comparison to recesses which are essentially cylindrical. Due to the stiffening ribs evenly distributed in the circumferential direction, the material thickness of the intermediate floor can be further reduced with a given minimum load capacity.
  • a impact silencer can be arranged on the side of the bottom of the recesses facing away from the openings. It is also advantageous that slight unevenness in the underbody can be bleached out due to the elastic flexibility of the impact muffler.
  • the arrangement of the impact silencers ensures that footfall or structure-borne noise is decoupled, since the floor covering only touches the screed. The entire intermediate floor and the upper floor formed by the screed are supported on the underbody only by the impact silencers.
  • the impact silencers preferably consist of a closed-cell foam body with a density of 20 to 60, preferably 25 to 50 kg / m3 and have a pore number of at least 50, preferably 70 ppi. ppi indicates the number of pores over a 1-inch length.
  • the impact muffler covers the floor substantially completely, the impact muffler preferably having the shape of a regular hexagon.
  • the advantage here is that the impact silencer through its full surface Coverage of the floor is only exposed to a comparatively low surface pressure and therefore relaxation phenomena that impair impact sound insulation are avoided.
  • the shape of the regular hexagon is particularly advantageous from a manufacturing and economic point of view. Thanks to the hexagonal geometry, the impact silencers can be made absolutely waste-free.
  • the impact silencers are preferably glued to the bottom of the depressions in the intermediate floor and have a thickness of at least 2, preferably at least 5 mm. The good performance properties of the mezzanine floor with regard to decoupling impact sound remain unchanged throughout the entire service life.
  • the intermediate floor can be formed by at least two separately produced individual elements, which can be fixed to one another by at least one fastening device.
  • the individual elements can have external dimensions that correspond to the euro pallet size, so that an optimal transport area allocation is guaranteed when loading by truck and / or train.
  • the fastening device can be formed by a push button system in which at least one cup-shaped bulge of the first individual element can be brought into engagement with at least one congruently shaped recess or recess of the second individual element.
  • the sub-area of the overlap of one of the individual elements facing the sub-floor can be provided with a substantially right-angled shoulder, the thickness of which corresponds to the material thickness used for the sub-area of the individual element which faces the top floor.
  • Fig. 1 a section of a cavity floor is shown in a cross-sectional view.
  • FIG. 2 the intermediate floor of the cavity floor from Fig. 1 is shown cross-section as a single part, two adjacent individual elements of the intermediate floor are shown before their assembly.
  • Fig. 3 the intermediate floor is shown in a view from the direction of the sub-floor.
  • FIG. 4 shows two exemplary embodiments for the design of stiffening ribs which extend along the height of the depressions and are distributed uniformly in the circumferential direction.
  • a section of a cavity floor is shown in a cross-sectional view.
  • the cavity floor consists of an upper floor 2 designed as a screed, which is supported by an intermediate floor 1 on a sub-floor 3 made of concrete impact sound decoupled.
  • the intermediate floor 1 consists of several individual elements 1.1, 1.2, which are designed as deep-drawn floor foils.
  • the floor film 7 has a multiplicity of cup-shaped depressions 4 which are connected to the surface by a substantially flat edge region 5 which adjoins the openings 8 of the depressions 4.
  • the depressions 4 are filled with a sound-absorbing filler 6, which in this exemplary embodiment consists of a PU foam and has a density of 80 kg / m 3.
  • the foam has good inherent rigidity and can take a load of around 4000 N per well 4.
  • the depressions 4 have a surface profile on the inside facing the filler 6, with which the filler 6 interlocks positively during its solidification.
  • the depressions 4 are dimensioned in this embodiment such that the ratio from the largest inner diameter 10 of the recess 4 and the height 11 is one.
  • the floor film 7 is provided on the side facing the sub-floor 3 with impact mufflers 14 which are adhesively connected to the floors 13 of the depressions 4.
  • the plate-shaped impact silencers 14 consist of a closed-cell plastic body and cover the floor 13 essentially along its entire extent.
  • the filler 6 within the depressions 4 extends into the area of the openings 8 of the depressions 4 and is flush with the edge areas 5.
  • the reference number 9 denotes beads in the edge region 5, which are provided to improve the dimensional stability of the intermediate floor 1.
  • the second individual element 1.2 has a right-angled shoulder 19 which corresponds to the material thickness of the edge area 5 of the first individual element 1.1.
  • the push button system 16 is shown in a top view. It can be seen that the depression or recess 18 of the second individual element 1.2 is designed as an elongated hole, while the bulge 17 of the first individual element 1.1 has a circular shape. When connecting the bulge 17 to the depression or recess 18, manufacturing-related dimensional tolerances can be compensated for.
  • the screed is distributed over the surface of the intermediate floor 1 and forms the upper floor 2.
  • the impact silencers 14 cover essentially the entire bottom 13 of the depressions 4 and are designed in the form of a regular hexagon.
  • the impact silencers 14 consist of a closed-cell foam body and are glued to the floor 13.
  • the frustoconical depressions 4 have beads 9 which extend along the entire height 11 of the depressions 4 and are distributed uniformly in the circumferential direction.
  • the stiffening ribs 12 are essentially trapezoidal in FIG. 4.1; 4.2, the stiffening ribs 12 have an essentially triangular cross section.
  • the load capacity of the intermediate floor 1 is significantly increased by the stiffening ribs 12.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)

Abstract

The hollow space floor intermediate floor (1) is formed by a sheet (7) of polymer material and the filling material (6) of a cavity (4) has a load ability of at least 4000 N. The filling material is retained adhesively in the cavities. The filling material and the edge areas (5) adjoining the openings (8) of the cavities have a surface union. The edge areas have a channel (9) which improves their shape resistance. The filling material is formed by a polyurethane foam and has a space wt. of 50 to 120 kg/m3. The filling material can also be formed by one-piece rubber-cork bodies. The cavities are blunt-conical in shape and are provided with reinforcement ribs extending along the complete height (11) of the cavities and equally distributed in a peripheral direction.

Description

Die Erfindung betrifft einen Hohlraumboden, umfassend einen profilierten Zwischenboden, der zwischen einem Ober- und einem Unterboden angeordnet und plattenförmig ausgebildet ist, wobei der Zwischenboden topfförmige Vertiefungen aufweist, die durch im wesentlichen ebene Randbereiche miteinander verbunden sind.The invention relates to a cavity floor, comprising a profiled intermediate floor, which is arranged between an upper and a lower floor and is plate-shaped, the intermediate floor having pot-shaped depressions which are connected to one another by essentially flat edge regions.

Ein solcher Hohlraumboden ist aus der DE 36 37 987 A1 bekannt. Der vorbekannte Hohlraumboden weist eine von Estrich ausgefüllte und überdeckte profilierte Fußbodenfolie mit kegelstumpfförmigen Tragfüßen auf, wobei sich die Fußbodenfolie Unebenheiten des Unterbodens anpaßt und begehbar ist. Die Fußbodenfolie bildet eine Schalung für das aufzubringende Estrichmaterial, das den Oberboden bildet. Die Fußbodenfolie ist plattenförmig und möglichst dünn ausgebildet, so daß einander benachbarte Folienplatten an ihren Rändern lose übereinandergelegt werden können, ohne daß in der Estrichschicht Stufen entstehen.Such a cavity floor is known from DE 36 37 987 A1. The previously known cavity floor has a screed-filled and covered profiled floor film with truncated cone-shaped support feet, the floor film adapting to unevenness in the sub-floor and being accessible. The floor film forms a formwork for the screed material to be applied, which forms the top floor. The floor film is plate-shaped and as thin as possible, so that adjacent film plates can be placed loosely one above the other at their edges without any steps occurring in the screed layer.

Der Erfindung liegt die Aufgabe zugrunde, einen Hohlraumboden der vorbekannten Art derart weiterzuentwickeln, daß innere Spannungen im Estrich, der den Oberboden bildet, vermieden werden und daß der Estrich eine kürzere Trocknungszeit aufweist. Der Hohlraumboden soll außerdem eine verbesserte Trittschalldämmung aufweisen.The invention has for its object to develop a cavity floor of the known type such that internal stresses in the screed, which forms the top floor, are avoided and that the screed has a shorter drying time. The cavity floor is also said to have improved impact sound insulation.

Diese Aufgabe wird durch die Merkmale von Anspruch 1 gelöst. Auf vorteilhafte Ausgestaltungen nehmen die Unteransprüche Bezug.This object is solved by the features of claim 1. The subclaims refer to advantageous refinements.

Im Rahmen der vorliegenden Erfindung ist es vorgesehen, daß die Vertiefungen mit einem schalldämmenden Füllstoff ausgefüllt sind. Dadurch, daß die Vertiefungen des Zwischenbodens nicht mit den Oberboden bildenden Estrich ausgefüllt sind, sondern mit einem schalldämmenden Füllstoff, werden die Trocknungszeit des Estrichs durch die Vermeidung von Materialanhäufungen im Bereich der Vertiefungen deutlich verkürzt und innere Spannungen innerhalb des Estrichs zuverlässig vermieden. Eine Übertragung von störendem Trittschall vom Oberboden auf den Unterboden wird durch die mit dem schalldämmenden Füllstoff ausgefüllten Vertiefungen wesentlich reduziert.In the context of the present invention it is provided that the depressions are filled with a sound-absorbing filler. The fact that the depressions of the mezzanine floor are not filled with screed forming the top floor, but with a sound-absorbing filler, the The drying time of the screed is significantly reduced by avoiding material accumulation in the area of the depressions and internal stresses within the screed are reliably avoided. A transfer of annoying impact sound from the top floor to the bottom floor is significantly reduced by the recesses filled with the sound-absorbing filler.

Der Unterboden besteht zumeist aus Beton, auf den unter Zwischenfügung des Zwischenbodens flüssiges Estrichmaterial zur Herstellung des Oberbodens aufgebracht wird. Zur Herstellung eines Oberbodens mit glatter Oberfläche ist von Vorteil, wenn der Zwischenboden begehbar ist, um gegebenenfalls das zähflüssige Estrichmaterial glattstreichen zu können.The sub-floor mostly consists of concrete, to which liquid screed material is applied to create the top floor, with the interposition of the intermediate floor. To produce a top floor with a smooth surface, it is advantageous if the intermediate floor is accessible so that the viscous screed material can be smoothed out if necessary.

Gemäß einer vorteilhaften Ausgestaltung ist es vorgesehen, daß der Zwischenboden durch eine Fußbodenfolie aus polymerem Werkstoff gebildet ist, die bevorzugt durch Tiefziehen herstellbar ist.According to an advantageous embodiment, it is provided that the intermediate floor is formed by a floor film made of polymeric material, which can preferably be produced by deep drawing.

Der Füllstoff innerhalb einer Vertiefung weist bevorzugt eine Belastbarkeit von zumindest 4000 N auf. Dadurch ist die Begehbarkeit der Fußbodenfolie auch dann gewährleistet, wenn deren Dicke weniger als 1 mm beträgt. Der Füllstoff weist eine gute Eigensteifigkeit auf und kann daher hohe Belastungen aufnehmen. Die auf den Zwischenboden einwirkende Kraft wird im wesentlichen durch den Füllstoff aufgenommen.The filler within a depression preferably has a load capacity of at least 4000 N. This ensures that the floor film can be walked on even if its thickness is less than 1 mm. The filler has good inherent stiffness and can therefore withstand high loads. The force acting on the intermediate floor is essentially absorbed by the filler.

Der Füllstoff kann adhäsiv und/oder formschlüssig in den Vertiefungen gehalten sein. Es besteht beispielsweise die Möglichkeit, den Füllstoff im fließfähigen Zustand in die Vertiefungen einzubringen, wobei sich der Füllstoff beim Aushärten mit den angrenzenden Oberflächen der Fußbodenfolie verkrallt und dadurch formschlüssig in seiner Position gehalten ist.The filler can be held in the recesses in an adhesive and / or form-fitting manner. There is, for example, the possibility of introducing the filler into the depressions in the flowable state, the filler interlocking with the adjoining surfaces of the floor foil during curing and thereby being held in its position in a form-fitting manner.

Um eine möglichst gleichbleibende Dicke des Estrichs und eine damit verbundene übereinstimmende Trocknungszeit des gesamten Oberbodens zu bewirken und dadurch innere Spannungen zu vermeiden, ist es gemäß einer vorteilhaften Ausgestaltung vorgesehen, daß der Füllstoff und die an die Öffnungen der Verbindungen angrenzenden Randbereiche oberflächenbündig ausgebildet sind. Außerdem wird die Begehbarkeit des Zwischenbodens durch eine derartige Ausgestaltung wesentlich erleichtert. Beim Verlegen des Zwischenbodens auf dem Unterboden ist eine im wesentlichen glatte Oberfläche von hervorzuhebendem Vorteil.In order to achieve as constant a thickness of the screed as possible and an associated corresponding drying time of the entire top floor and thereby to avoid internal stresses, it is provided according to an advantageous embodiment that the filler and the openings of the connections adjacent edge areas are formed flush with the surface. In addition, the accessibility of the intermediate floor is made considerably easier by such a configuration. When laying the intermediate floor on the sub-floor, an essentially smooth surface is of particular advantage.

Die Randbereiche können zur Verbesserung ihrer Formbeständigkeit mit jeweils zumindest einer Sicke versehen sein, wobei bevorzugt zumindest zwei Sicken zur Anwendung gelangen, die einander in einem Winkel von im wesentlichen 90° durchschneiden. Neben der verbesserten Begehbarkeit ist durch die gesteigerte Formbeständigkeit die Verlegung des Zwischenbodens auf dem Unterboden vereinfacht.The edge regions can each be provided with at least one bead in order to improve their dimensional stability, at least two beads preferably being used which intersect one another at an angle of essentially 90 °. In addition to the improved accessibility, the increased dimensional stability makes it easier to lay the intermediate floor on the sub-floor.

Der Füllstoff ist bevorzugt durch einem PU-Schaum gebildet. Das Raumgewicht des Füllstoffs beträgt für die meisten Anwendungsfälle 50 bis 120, bevorzugt 60 bis 100 kg/m³. Ein derartiger Füllstoff weist eine vergleichsweise hohe Belastbarkeit auf, verhindert das Eindringen von Estrich in die Vertiefungen und bewirkt eine gute Trittschalldämmung beim Begehen des Hohlraumbodens. Der Füllstoff kann beispielsweise auch durch einen einstückig ausgebildeten Gummi-Korkkörper gebildet sein, der in jeweils eine Vertiefung eingelegt und mit dieser beispielsweise adhäsiv verbunden ist. Die Gummi-Korkkörper bestehen bevorzugt aus Recycling-Bestandteilen, die miteinander verpreßt sind. Hierbei ist von Vorteil, daß der Zwischenboden in wirtschaftlicher Hinsicht besonders kostengünstig herstellbar ist.The filler is preferably formed by a PU foam. The bulk density of the filler is 50 to 120, preferably 60 to 100 kg / m³ for most applications. Such a filler has a comparatively high load-bearing capacity, prevents screed from penetrating into the recesses and provides good impact sound insulation when walking on the cavity floor. The filler can also be formed, for example, by a one-piece rubber cork body, which is inserted into a depression and is adhesively connected to it, for example. The rubber cork bodies preferably consist of recycled components that are pressed together. The advantage here is that the mezzanine floor is particularly economical to manufacture from an economic point of view.

Gemäß einer vorteilhaften Ausgestaltung des Zwischenbodens ist es vorgesehen, daß die Vertiefungen jeweils übereinstimmend ausgebildet sind und daß das Verhältnis aus größtem Durchmesser und Höhe 0,6 bis 1,8, bevorzugt 0,8 bis 1,2 beträgt. Durch die im Querschnitt betrachtet im wesentlichen quadratische Auslegung der Vertiefungen weist der Zwischenboden ein hohes Maß an Tragfähigkeit auf, wobei ein Ausknicken der Vertiefungen auch bei Einleitung von Querkräften, beispielsweise beim Begehen des Zwischenbodens zum Aufbringen des Estrichs, zuverlässig vermieden wird.According to an advantageous embodiment of the intermediate floor, it is provided that the depressions are each designed to match and that the ratio of the largest diameter and height is 0.6 to 1.8, preferably 0.8 to 1.2. Due to the essentially square design of the depressions when viewed in cross section, the intermediate floor has a high degree of load-bearing capacity, and buckling of the depressions is reliably avoided even when transverse forces are introduced, for example when walking on the intermediate floor to apply the screed.

Eine weitere Verbesserung der mechanischen Festigkeit und Tragfähigkeit kann dadurch erzielt werden, daß die Vertiefungen kegelstumpfförmig ausgebildet und mit Versteifungsrippen versehen sind, die sich entlang der gesamten Höhe der Vertiefungen erstrecken und gleichmäßig in Umfangsrichtung verteilt sind. Durch die sich in Richtung des Unterbodens kegelstumpfförmig verjüngenden Vertiefungen entsteht außerdem im Vergleich zu im wesentlichen zylindrisch ausgebildeten Vertiefungen ein relativ vergrößerter Hohlraum zum Verlegen von Anschlußkabeln und -schläuchen. Durch die gleichmäßig in Umfangsrichtung verteilten Versteifungsrippen kann die Materialstärke des Zwischenbodens bei vorgegebener Mindest-Belastbarkeit, weiter reduziert werden.A further improvement in the mechanical strength and load-bearing capacity can be achieved in that the depressions are frustoconical and are provided with stiffening ribs which extend along the entire height of the depressions and are evenly distributed in the circumferential direction. The recesses which taper in the shape of a truncated cone in the direction of the subfloor also result in a relatively enlarged cavity for laying connecting cables and hoses in comparison to recesses which are essentially cylindrical. Due to the stiffening ribs evenly distributed in the circumferential direction, the material thickness of the intermediate floor can be further reduced with a given minimum load capacity.

Zur Verbesserung der Trittschalldämmung kann auf der den Öffnungen abgewandten Seite der Böden der Vertiefungen jeweils ein Trittschalldämpfer angeordnet sein. Außerdem ist von Vorteil, daß durch die elastische Nachgiebigkeit des Trittschalldämpfers geringe Unebenheiten des Unterbodens ausgeblichen werden können. Durch die Anordnung der Trittschalldämpfer wird eine Tritt- bzw. Körperschallabkopplung erreicht, da die Fußbodenfolie nur den Estrich anliegend berührt. Der gesamte Zwischenboden und der durch den Estrich gebildete Oberboden sind nur durch die Trittschalldämpfer auf dem Unterboden abgestützt.To improve the impact sound insulation, a impact silencer can be arranged on the side of the bottom of the recesses facing away from the openings. It is also advantageous that slight unevenness in the underbody can be bleached out due to the elastic flexibility of the impact muffler. The arrangement of the impact silencers ensures that footfall or structure-borne noise is decoupled, since the floor covering only touches the screed. The entire intermediate floor and the upper floor formed by the screed are supported on the underbody only by the impact silencers.

Die Trittschalldämpfer bestehen bevorzugt aus einem geschlossenzelligem Schaumstoffkörper mit einem Raumgewicht von 20 bis 60, bevorzugt 25 bis 50 kg/m³ und weisen eine Porenzahl von zumindest 50, bevorzugt 70 ppi auf. ppi gibt die Porenzahl auf 1-Inch Länge an. Durch derart ausgestaltete Trittschalldämpfer wurde in einem Versuch ein Trittschallverbesserungsmaß Δ Lw = 35 dB

Figure imgb0001
erreicht, nach DIN 52210-T bei einer 40 mm dicken Estrichauflage als Oberboden.The impact silencers preferably consist of a closed-cell foam body with a density of 20 to 60, preferably 25 to 50 kg / m³ and have a pore number of at least 50, preferably 70 ppi. ppi indicates the number of pores over a 1-inch length. An impact sound improvement measure was made in an experiment by impact sound absorbers designed in this way Δ Lw = 35 dB
Figure imgb0001
 achieved, according to DIN 52210-T with a 40 mm thick screed layer as top floor.

Der Trittschalldämpfer überdeckt den Boden im wesentlichen vollständig, wobei der Trittschalldämpfer bevorzugt die Form eines regelmäßigen Sechsecks aufweist. Hierbei ist von Vorteil, daß der Trittschalldämpfer durch seine vollflächige Überdeckung des Bodens nur einer vergleichsweise geringen Flächenpressung ausgesetzt ist und daher die Trittschalldämmung beeinträchtigende Relaxationserscheinungen vermieden werden. Die Form des regelmäßigen Sechsecks ist in fertigungstechnischer und wirtschaftlicher Hinsicht besonders vorteilhaft. Durch die sechseckige Geometrie können die Trittschalldämpfer absolut abfallfrei hergestellt werden. Die Trittschalldämpfer werden bevorzugt auf den Boden der Vertiefungen des Zwischenbodens aufgeklebt und weisen eine Dicke von zumindest 2, bevorzugt von zumindest 5 mm auf. Die guten Gebrauchseigenschaften des Zwischenbodens bezüglich der Trittschallabkopplung bleiben dadurch während der gesamten Gebrauchsdauer unverändert erhalten.The impact muffler covers the floor substantially completely, the impact muffler preferably having the shape of a regular hexagon. The advantage here is that the impact silencer through its full surface Coverage of the floor is only exposed to a comparatively low surface pressure and therefore relaxation phenomena that impair impact sound insulation are avoided. The shape of the regular hexagon is particularly advantageous from a manufacturing and economic point of view. Thanks to the hexagonal geometry, the impact silencers can be made absolutely waste-free. The impact silencers are preferably glued to the bottom of the depressions in the intermediate floor and have a thickness of at least 2, preferably at least 5 mm. The good performance properties of the mezzanine floor with regard to decoupling impact sound remain unchanged throughout the entire service life.

Der Zwischenboden kann durch zumindest zwei separat erzeugte Einzelelemente gebildet sein, die durch zumindest eine Befestigungsvorrichtung aneinander festlegbar sind. Durch die Verwendung mehrerer Einzelelemente, die in ihrer Gesamtheit den Zwischenboden bilden, wird die Verlegung des Zwischenbodens und dessen Handhabbarkeit wesentlich vereinfacht. Gemäß einer vorteilhaften Ausgestaltung können die Einzelelemente Außenmaße aufweisen, die dem Euro-Palettenmaß entsprechen, so daß eine optimale Transportflächenbelegung bei LKW- und/oder Bahnverladung gewährleistet ist.The intermediate floor can be formed by at least two separately produced individual elements, which can be fixed to one another by at least one fastening device. The use of several individual elements, which in their entirety form the intermediate floor, considerably simplifies the laying of the intermediate floor and its manageability. According to an advantageous embodiment, the individual elements can have external dimensions that correspond to the euro pallet size, so that an optimal transport area allocation is guaranteed when loading by truck and / or train.

Die Befestigungsvorrichtung kann durch ein Druckknopfsystem gebildet sein, bei dem zumindest eine topfförmige Auswölbung des ersten Einzelelements mit zumindest einer kongruent geformten Vertiefung oder Ausnehmung des zweiten Einzelelements in Eingriff bringbar ist. Im Bereich der Überlappung von Auswölbung und Vertiefung oder Ausnehmung kann der dem Unterboden zugewandte Teilbereich der Überlappung eines der Einzelelemente mit einem im wesentlichen rechtwinklig verlaufenden Absatz versehen sein, der in seiner Dicke der eingesetzten Materialdicke des Teilbereichs des Einzelelements entspricht, das dem Oberboden zugewandt ist. Nach dem Verlegen der Einzelelemente zur Zwischenschicht bildet die Oberfläche der Einzelelemente eine Ebene, so daß der anschließend aufgebrachte Estrich eine konstante Dicke aufweist.The fastening device can be formed by a push button system in which at least one cup-shaped bulge of the first individual element can be brought into engagement with at least one congruently shaped recess or recess of the second individual element. In the area of the overlap of the bulge and recess or recess, the sub-area of the overlap of one of the individual elements facing the sub-floor can be provided with a substantially right-angled shoulder, the thickness of which corresponds to the material thickness used for the sub-area of the individual element which faces the top floor. After laying the individual elements to the intermediate layer, the surface of the individual elements forms a plane, so that the screed subsequently applied has a constant thickness.

Ein Ausführungsbeispiel des erfindungsgemäßen Hohlraumbodens wird nachfolgend anhand der Fig. 1 bis 4 näher erläutert.An embodiment of the cavity floor according to the invention is explained in more detail below with reference to FIGS. 1 to 4.

In Fig. 1 ist ein Ausschnitt aus einem Hohlraumboden in quergeschnittener Darstellung gezeigt.In Fig. 1 a section of a cavity floor is shown in a cross-sectional view.

In Fig. 2 ist der Zwischenboden des Hohlraumbodens aus Fig. 1 als Einzelteil quergeschnitten dargestellt, wobei zwei einander benachbarte Einzelelemente des Zwischenbodens vor ihrer Montage gezeigt sind.In Fig. 2, the intermediate floor of the cavity floor from Fig. 1 is shown cross-section as a single part, two adjacent individual elements of the intermediate floor are shown before their assembly.

In Fig. 3 ist der Zwischenboden in einer Ansicht aus Richtung des Unterbodens gezeigt.In Fig. 3 the intermediate floor is shown in a view from the direction of the sub-floor.

In Fig. 4 sind zwei Ausführungsbeispiele für die Gestaltung von Versteifungsrippen gezeigt, die sich entlang der Höhe der Vertiefungen erstrecken und gleichmäßig in Umfangsrichtung verteilt sind.4 shows two exemplary embodiments for the design of stiffening ribs which extend along the height of the depressions and are distributed uniformly in the circumferential direction.

In Fig. 1 ist ein Ausschnitt aus einem Hohlraumboden in quergeschnittener Darstellung gezeigt. Der Hohlraumboden besteht aus einem als Estrich ausgebildeten Oberboden 2, der durch einen Zwischenboden 1 auf einem Unterboden 3 aus Beton trittschallentkoppelt abgestützt ist. Der Zwischenboden 1 besteht in diesem Ausführungsbeispiel aus mehreren Einzelelementen 1.1, 1.2, die als tiefgezogene Fußbodenfolien ausgebildet sind. Die Fußbodenfolie 7 weist eine Vielzahl topfförmiger Vertiefungen 4 auf, die durch einen an die Öffnungen 8 der Vertiefungen 4 angrenzenden, im wesentlichen ebenen Randbereich 5 oberflächenbündig verbunden sind. Die Vertiefungen 4 sind mit einem schalldämmenden Füllstoff 6 ausgefüllt, der in diesem Ausführungsbeispiel aus einem PU-Schaum besteht und ein Raumgewicht von 80 kg/m³ aufweist. Der Schaum hat eine gute Eigensteifigkeit und kann eine Belastung von rund 4000 N pro Vertiefung 4 aufnehmen. Die Vertiefungen 4 weisen auf der dem Füllstoff 6 zugewandten Innenseite eine Oberflächenprofilierung auf, mit der sich der Füllstoff 6 während seiner Verfestigung formschlüssig verkrallt. Die Vertiefungen 4 sind in diesem Ausführungsbeispiel derart dimensioniert, daß das Verhältnis aus dem größten Innendurchmesser 10 der Vertiefung 4 und der Höhe 11 eins beträgt. Die Fußbodenfolie 7 ist auf der dem Unterboden 3 zugewandten Seite mit Trittschalldämpfern 14 versehen, die mit den Böden 13 der Vertiefungen 4 adhäsiv verbunden sind. Die plattenförmigen Trittschalldämpfer 14 bestehen aus einem geschlossenzelligen Kunststoffkörper und überdecken den Boden 13 im wesentlichen entlang seiner gesamten Ausdehnung. Der Füllstoff 6 innerhalb der Vertiefungen 4 erstreckt sind bis in den Bereich der Öffnungen 8 der Vertiefungen 4 und schließt bündig mit den Randbereichen 5 ab. Mit dem Bezugszeichen 9 sind Sicken im Randbereich 5 gekennzeichnet, die zur Verbesserung der Formbeständigkeit des Zwischenbodens 1 vorgesehen sind.In Fig. 1 a section of a cavity floor is shown in a cross-sectional view. The cavity floor consists of an upper floor 2 designed as a screed, which is supported by an intermediate floor 1 on a sub-floor 3 made of concrete impact sound decoupled. In this exemplary embodiment, the intermediate floor 1 consists of several individual elements 1.1, 1.2, which are designed as deep-drawn floor foils. The floor film 7 has a multiplicity of cup-shaped depressions 4 which are connected to the surface by a substantially flat edge region 5 which adjoins the openings 8 of the depressions 4. The depressions 4 are filled with a sound-absorbing filler 6, which in this exemplary embodiment consists of a PU foam and has a density of 80 kg / m 3. The foam has good inherent rigidity and can take a load of around 4000 N per well 4. The depressions 4 have a surface profile on the inside facing the filler 6, with which the filler 6 interlocks positively during its solidification. The depressions 4 are dimensioned in this embodiment such that the ratio from the largest inner diameter 10 of the recess 4 and the height 11 is one. The floor film 7 is provided on the side facing the sub-floor 3 with impact mufflers 14 which are adhesively connected to the floors 13 of the depressions 4. The plate-shaped impact silencers 14 consist of a closed-cell plastic body and cover the floor 13 essentially along its entire extent. The filler 6 within the depressions 4 extends into the area of the openings 8 of the depressions 4 and is flush with the edge areas 5. The reference number 9 denotes beads in the edge region 5, which are provided to improve the dimensional stability of the intermediate floor 1.

In Fig. 2 ist ein Ausschnitt aus zwei Einzelelementen 1.1, 1.2 gezeigt, die in ihrem Randbereich 5 durch eine Befestigungsvorrichtung 15 formschlüssig aneinander festlegbar sind. Die Befestigungsvorrichtung 15 ist durch ein Druckknopfsystem 16 gebildet, wobei das erste Einzelelement 1.1 mit einer in Richtung des Unterbodens 3 weisenden Auswölbung 17 versehen ist, die in eine in Richtung des Oberbodens 2 offene Vertiefung oder Ausnehmung 18 des zweiten Einzelelements 1.2 formschlüssig einschnappbar ist. Das zweite Einzelelement 1.2 weist einen rechtwinklig verlaufenden Absatz 19 auf, der der Materialstärke des Randbereichs 5 des ersten Einzelelements 1.1 entspricht. Nach dem Verbinden der beiden Einzelelemente 1.1, 1.2 bildet die dem Oberboden 2 zugewandte Oberfläche des Zwischenbodens 1 eine Ebene.2 shows a section of two individual elements 1.1, 1.2, which can be positively fixed to one another in their edge region 5 by a fastening device 15. The fastening device 15 is formed by a push button system 16, the first individual element 1.1 being provided with a bulge 17 pointing in the direction of the underbody 3, which can be snapped into the recess or recess 18 of the second individual element 1.2 which is open in the direction of the upper floor 2. The second individual element 1.2 has a right-angled shoulder 19 which corresponds to the material thickness of the edge area 5 of the first individual element 1.1. After connecting the two individual elements 1.1, 1.2, the surface of the intermediate floor 1 facing the top floor 2 forms a plane.

In Einzelheit X ist das Druckknopfsystem 16 in einer Draufsicht gezeigt. Es ist zu erkennen, daß die Vertiefung oder Ausnehmung 18 des zweiten Einzelelements 1.2 als Langloch ausgebildet ist, während die Auswölbung 17 des ersten Einzelelements 1.1 eine kreisförmige Gestalt aufweist. Beim Verbinden der Auswölbung 17 mit der Vertiefung oder Ausnehmung 18 können herstellungsbedingte Maß-Toleranzen ausgeglichen werden.In detail X, the push button system 16 is shown in a top view. It can be seen that the depression or recess 18 of the second individual element 1.2 is designed as an elongated hole, while the bulge 17 of the first individual element 1.1 has a circular shape. When connecting the bulge 17 to the depression or recess 18, manufacturing-related dimensional tolerances can be compensated for.

Nachdem alle Einzelelemente 1.1, 1.2 zum Zwischenboden 1 verbunden sind, wird der Estrich über die Oberfläche des Zwischenbodens 1 verteilt und bildet den Oberboden 2.After all the individual elements 1.1, 1.2 are connected to the intermediate floor 1, the screed is distributed over the surface of the intermediate floor 1 and forms the upper floor 2.

In Fig. 3 ist das Einzelelement 1.1 mit eine Länge A und einer Breite B in einer Ansicht vom Unterboden 3 gezeigt. Im Bereich des Umfangs des Einzelelements 1.1 sind Auswölbungen 17 und Vertiefungen oder Ausnehmungen 18 angeordnet, die einen Teil des Druckknopfsystems 16 bilden. Zwischen den Vertiefungen 4 sind Sicken 9 angeordnet, die eine verbesserte Formbeständigkeit des Zwischenbodens 1 bedingen. Die Trittschalldämpfer 14 bedecken im wesentlichen den gesamten Boden 13 der Vertiefungen 4 und sind in Form eines regelmäßigen Sechsecks ausgebildet. Die Trittschalldämpfer 14 bestehen aus einem geschlossenzelligem Schaumstoffkörper und sind mit dem Boden 13 verklebt.3 shows the individual element 1.1 with a length A and a width B in a view from the underbody 3. In the area of the circumference of the individual element 1.1, bulges 17 and depressions or recesses 18 are arranged, which form part of the push button system 16. Between the recesses 4 beads 9 are arranged, which require improved dimensional stability of the intermediate floor 1. The impact silencers 14 cover essentially the entire bottom 13 of the depressions 4 and are designed in the form of a regular hexagon. The impact silencers 14 consist of a closed-cell foam body and are glued to the floor 13.

In Fig. 4 sind zwei Beispiele von möglichen Querschnitten der Vertiefungen 4 gezeigt. In Fig. 4.1 weisen die kegelstumpfförmigen Vertiefungen 4 Sicken 9 auf, die sich entlang der gesamten Höhe 11 der Vertiefungen 4 erstrecken und gleichmäßig in Umfangsrichtung verteilt sind. Die Versteifungsrippen 12 sind in Fig. 4.1 im wesentlichen trapezförmig ausgebildet; in Fig. 4.2 weisen die Versteifungsrippen 12 einen im wesentlichen dreieckförmigen Querschnitt auf. Die Belastbarkeit des Zwischenbodens 1 wird durch die Versteifungsrippen 12 wesentlich erhöht.4 shows two examples of possible cross sections of the depressions 4. 4.1, the frustoconical depressions 4 have beads 9 which extend along the entire height 11 of the depressions 4 and are distributed uniformly in the circumferential direction. The stiffening ribs 12 are essentially trapezoidal in FIG. 4.1; 4.2, the stiffening ribs 12 have an essentially triangular cross section. The load capacity of the intermediate floor 1 is significantly increased by the stiffening ribs 12.

Claims (16)

Hohlraumboden, umfassend einen profilierten Zwischenboden, der zwischen einem Ober- und einem Unterboden angeordnet und plattenförmig ausgebildet ist, wobei der Zwischenboden topfförmige Vertiefungen aufweist, die durch im wesentlichen ebene Randbereiche miteinander verbunden sind, dadurch gekennzeichnet, daß die Vertiefungen (4) mit einem schalldämmenden Füllstoff (6) ausgefüllt sind.Cavity floor, comprising a profiled intermediate floor, which is arranged between an upper and a lower floor and is plate-shaped, the intermediate floor having pot-shaped depressions which are connected to one another by essentially flat edge regions, characterized in that the depressions (4) have a sound-absorbing Filler (6) are filled out. Hohlraumboden nach Anspruch 1, dadurch gekennzeichnet, daß der Zwischenboden (1) durch eine Fußbodenfolie (7) aus polymerem Werkstoff gebildet ist.Raised floor according to claim 1, characterized in that the intermediate floor (1) is formed by a floor film (7) made of polymeric material. Hohlraumboden nach Anspruch 1 bis 2, dadurch gekennzeichnet, daß der Füllstoff (6) einer Vertiefung (4) eine Belastbarkeit von zumindest 4000 N aufweist.Raised floor according to claims 1 to 2, characterized in that the filler (6) of a recess (4) has a load capacity of at least 4000 N. Hohlraumboden nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Füllstoff (6) adhäsiv und/oder formschlüssig in den Vertiefungen (4) gehalten ist.Raised access floor according to claims 1 to 3, characterized in that the filler (6) is held in the recesses (4) in an adhesive and / or form-fitting manner. Hohlraumboden nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß der Füllstoff (6) und die an die Öffnungen (8) der Vertiefungen (4) angrenzenden Randbereiche (5) oberflächenbündig ausgebildet sind.Raised floor according to claims 1 to 4, characterized in that the filler (6) and the edge regions (5) adjoining the openings (8) of the depressions (4) are flush with the surface. Hohlraumboden nach Anspruch 5, dadurch gekennzeichnet, daß die Randbereiche (5) mit jeweils zumindest einer, ihre Formbeständigkeit verbessernde Sicke (9) versehen sind.Cavity floor according to claim 5, characterized in that the edge regions (5) are each provided with at least one bead (9) which improves their dimensional stability. Hohlraumboden nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß der Füllstoff (6) durch einen PU-Schaum gebildet ist und ein Raumgewicht von 50 bis 120 kg/m³ aufweist.Raised floor according to claims 1 to 5, characterized in that the filler (6) is formed by a PU foam and has a density of 50 to 120 kg / m³. Hohlraumboden nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß der Füllstoff (6) durch einstückig ausgebildete Gummi-Korkkörper gebildet ist.Raised floor according to claims 1 to 5, characterized in that the filler (6) is formed by a rubber cork body formed in one piece. Hohlraumboden nach Anspruch 1 bis 8, dadurch gekennzeichnet, daß die Vertiefungen (4) jeweils übereinstimmend ausgebildet sind und daß das Verhältnis aus größtem Durchmesser (10) und Höhe (11) 0,6 bis 1,5 beträgt.Raised floor according to claims 1 to 8, characterized in that the depressions (4) are each designed to match and that the ratio of the largest diameter (10) and height (11) is 0.6 to 1.5. Hohlraumboden nach Anspruch 1 bis 9, dadurch gekennzeichnet, daß die Vertiefungen (4) kegelstumpfförmig ausgebildet und mit Versteifungsrippen (12) versehen sind, die sich entlang der gesamten Höhe (11) der Vertiefungen (4) erstrecken und gleichmäßig in Umfangsrichtung verteilt sind.Raised floor according to claims 1 to 9, characterized in that the depressions (4) are frustoconical and are provided with stiffening ribs (12) which extend along the entire height (11) of the depressions (4) and are evenly distributed in the circumferential direction. Hohlraumboden nach Anspruch 1 bis 10, dadurch gekennzeichnet, daß auf der den Öffnungen (8) abgewandten Seite der Böden (13) der Vertiefungen (4) jeweils ein Trittschalldämpfer (14) angeordnet ist.Raised floor according to claims 1 to 10, characterized in that on the side of the floors (13) of the depressions (4) facing away from the openings (8) there is in each case an impact silencer (14). Hohlraumboden nach Anspruch 11, dadurch gekennzeichnet, daß der Trittschalldämpfer (14) aus einem geschlossenzelligen Schaum mit einem Raumgewicht von 20 bis 60 kg/m³ besteht und eine Porenzahl von zumindest 50 ppi aufweist.Raised floor according to claim 11, characterized in that the impact silencer (14) consists of a closed-cell foam with a density of 20 to 60 kg / m³ and has a pore number of at least 50 ppi. Hohlraumboden nach Anspruch 11 bis 12, dadurch gekennzeichnet, daß der Trittschalldämpfer (14) den Boden (13) im wesentlichen vollständig überdeckt und die Form eines regelmäßigen Sechsecks aufweist.Raised floor according to claims 11 to 12, characterized in that the impact silencer (14) covers the floor (13) substantially completely and has the shape of a regular hexagon. Hohlraumboden nach Anspruch 11 bis 13, dadurch gekennzeichnet, daß die Dicke des Trittschalldämpfers (14) zumindest 2 mm beträgt.Raised floor according to claims 11 to 13, characterized in that the thickness of the impact silencer (14) is at least 2 mm. Hohlraumboden nach Anspruch 1 bis 14, dadurch gekennzeichnet, daß der Zwischenboden (1) durch zumindest zwei separat erzeugte Einzelelemente (1.1, 1.2) gebildet ist, die durch zumindest eine Befestigungsvorrichtung (15) aneinander festlegbar sind.Cavity floor according to Claims 1 to 14, characterized in that the intermediate floor (1) is formed by at least two separately produced individual elements (1.1, 1.2) which can be fixed to one another by at least one fastening device (15). Hohlraumboden nach Anspruch 15, dadurch gekennzeichnet, daß die Befestigungsvorrichtung (15) durch eine Druckknopfsystem (16) gebildet ist, bei dem eine topfförmige Auswölbung (17) des ersten Einzelelements (1.1) mit einer kongruent geformten Vertiefung oder Ausnehmung (18) des zweiten Einzelelements (1.2) formschlüssig in Eingriff bringbar ist.Raised floor according to claim 15, characterized in that the fastening device (15) is formed by a push button system (16), in which a cup-shaped bulge (17) of the first individual element (1.1) with a congruently shaped recess or recess (18) of the second individual element (1.2) can be positively engaged.
EP95102203A 1994-10-07 1995-02-17 False floors Expired - Lifetime EP0705950B1 (en)

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EP3643607A1 (en) 2018-10-26 2020-04-29 Airbus Helicopters Compact anti-vibration device and vehicle
FR3087752A1 (en) 2018-10-26 2020-05-01 Airbus Helicopters COMPACT ANTI-VIBRATION DEVICE AND VEHICLE
US11796033B2 (en) 2018-10-26 2023-10-24 Airbus Helicopters Compact vibration damping device and vehicle

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DE4435895A1 (en) 1996-04-11
CA2158876A1 (en) 1996-04-08
US5572842A (en) 1996-11-12
JPH08120903A (en) 1996-05-14
EP0705950B1 (en) 1999-10-20
ATE185869T1 (en) 1999-11-15
JP3046566U (en) 1998-03-10
CA2158876C (en) 1999-05-04
DE4435895C2 (en) 2001-09-20

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