EP2420161B1 - Floor protector for a chair - Google Patents

Floor protector for a chair Download PDF

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Publication number
EP2420161B1
EP2420161B1 EP11177465.9A EP11177465A EP2420161B1 EP 2420161 B1 EP2420161 B1 EP 2420161B1 EP 11177465 A EP11177465 A EP 11177465A EP 2420161 B1 EP2420161 B1 EP 2420161B1
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EP
European Patent Office
Prior art keywords
floor
component
protector
floor protector
assembly
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EP11177465.9A
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German (de)
French (fr)
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EP2420161A1 (en
Inventor
Stefan Schneider
Emel Gerstner
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ASS-EINRICHTUNGSSYSTEME GmbH
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ASS-Einrichtungssysteme GmbH
ASS EINRICHTUNGSSYSTEME GmbH
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Publication of EP2420161A1 publication Critical patent/EP2420161A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases

Definitions

  • the invention relates to a floor protector for a chair according to the preamble of the independent claim.
  • Such floor protectors for chairs which have a seat support with a substantially tubular designed bottom group, usually designed as a cantilever, are known from the prior art.
  • floor protectors are known, which are fastened to the lower part of the tubular frame of the floor assembly of a seat support.
  • Embodiments are also known in which the floor protectors have an opening in the middle so that they enclose over the tubular floor element after assembly. The attachment is done regularly with a fastener, such as a screw, hidden from below, so that the fastener is not visible.
  • a fastener such as a screw
  • Floor protectors are also known which have an elastic material and thus provide for a certain flexibility of the schooner. These sometimes also have two components, the lower component is usually the soft component.
  • the soft part of such a well-known floor protector must also have a certain hardness, since too soft a portion on the one hand absorbs too much dirt, on the other causes considerable abrasion and therefore is very poorly durable.
  • the lower part of the floor protector must not adhere too well to the surface, since the chair should be able to be pushed away with the calf, for example, when the person sitting on it is moving with the calf.
  • the soft portion of such known floor saver has a so-called Shore hardness of well over 50, so that the mediated elasticity is limited.
  • a floor protector which is designed substantially in three parts and has an upper part, a lower part and a middle part connecting the upper part to the lower part.
  • the upper part has an opening in the axial direction, which completely surrounds the end of the chair leg in the radial direction.
  • a floor protector for a chair which has a head portion and a bolt extending the head portion in the axial direction.
  • the floor protector is fastened with the bolt to one end of a tubular chair leg by inserting the bolt into the open end of the chair leg.
  • At the bottom of the head portion of a floor glides is arranged felt.
  • a hitherto unsolved problem forms the so-called tilting with such Stüh-len.
  • pupils using the chair will tilt the chair more or less frequently and for a long time. Since this is now accepted in schools, the problems with the damage of the usually relatively soft floor, which is often made of plastic, linoleum or wood in schools, by frequent tipping.
  • Object of the present invention is therefore to provide a floor protector for chairs, which avoids the disadvantages mentioned and provides a higher elastic effect while avoiding high downforce and high adhesion and is suitable to avoid possible damage to the substrate by tilting the chair or at least reduce it.
  • the invention provides a chair with a tubular steel frame, which is equipped with appropriate floor protectors.
  • a floor protector for a chair with seat support preferably for a chair with a spring-trained seat support
  • the seat support is preferably designed as a cantilever, ideally in Z-shape, but other designs are possible.
  • the seat carrier has an essentially tubular floor group, which extends at least at the edges of the base area formed by the floor group substantially parallel to the ground.
  • the floor protector provided has an opening in the axial direction, with which the floor group can be enclosed radially at one of the ends, wherein the surface of the floor protector facing the substrate is substantially planar.
  • the floor protector has at least one first - upper - component and a second - lower - component with different hardness, wherein the axially extending opening on the side facing away from the bottom through the first - upper - component and on the ground-facing side the second - lower - component is formed, wherein the first component with the second component in the region of the opening is firmly connected and wherein the first component extends in the axial direction at least over half of the bottom group enclosing area of the bottom protector.
  • the floor protector in the floor-facing side has a preferably rectangular recess for receiving a floor slide, preferably made of felt material or plastic. Such a glider made of the materials mentioned is preferably firmly connected to the floor protector, such as by gluing.
  • connection between the first and second components in a transition region is continuous, wherein the continuous solid transition is preferably produced by casting the two components.
  • the second component preferably has a Shore hardness between 40 and 60, preferably about 50, and preferably includes thermoplastic elastomers (TPE) as the material.
  • the floor protector it is advantageous if it has at the top a recess for receiving fastening means, preferably a screw, to connect the floor protector firmly but detachably connected to the bottom group.
  • a very particular advantage is achieved when the second component protrudes beyond the first component on the side facing away from the bottom group in the axial direction and / or on the side facing away from the bottom group perpendicular to the axial direction and parallel to the ground like a bead.
  • Projection at the top forms, in which preferably the recess for receiving the fastening device is located.
  • a chair with a tubular steel frame as a chair support and floor assembly characterized in that the bottom group of the chair has floor protector according to one of the preceding claims.
  • Fig. 1 shows a floor protector 1 according to the invention in a side view.
  • This variant of the floor protector according to the invention is suitable for being put on an outgoing pipe and being fastened there, the raw forming part of the floor group 2 a of a seat support 2.
  • the floor protector has at the rear of an opening 3, which receives the pipe end of the bottom group 2a.
  • the floor protector consists of a first - upper - component 4 and a second - lower - component 5 and a transition region 6.
  • the upper component is made of a hard material with high abrasion resistance. It protects the floor protector from above and at the same time serves as a storage area for the user's feet, as experience shows that people sitting on such chairs like to place their feet in the area of the front floor protectors on the floor stand.
  • the upper component 4 projects in the embodiment shown here back along the tube frame by way of a projection, which also supports the function as a storage area for the feet.
  • a recess 10 is inserted, via the above from a fastening means, preferably a screw, can be introduced to the Bodenschoner firmly connected to the pipe element of the bottom group 2a.
  • the second component 5 which has a very soft material, preferably with a Shore hardness of between 40 and 60, particularly preferably about 50, to one in comparison to floor protectors according to the prior art clearly to provide increased elasticity.
  • the floor protector has a recess 8, into which a floor slide 9 can be inserted and fastened, so that it ultimately consists of a total of three components consists.
  • the floor glider can be made of solid plastic, where on hard floors glides made of a felt-like material have proven to be particularly good because they slide well and at the same time provide a high level of protection of the soil in which they can push dirt around.
  • the front opening 3 completely closed.
  • the hard upper cover formed by the first component 4 is pulled over the opening.
  • the second component 5 protrudes in this area in the axial direction beyond the end of the hard first component 4 and thus forms a bead of the particularly soft material of the second component 5 in the end region of the bottom protector.
  • a particular advantage of the protruding bead, formed by the particularly soft second component 5, is that the soil is spared when the user tilts. With such tilting, the area of the floor protector that has the projection 7 would be raised, so that the front area of the floor protector virtually rolls over the floor and comes into contact with it. In the tilted state is thus no longer (exclusively) the bottom slider 9 in contact with the substrate, but the front bead of the second component 5. Since this is particularly soft, this protects the ground in a very special way, so that even with prolonged tipping Damage even a soft linoleum background is usually avoided.
  • the comparatively high static friction of the particularly soft material ensures that in the tilted state, a particularly high static friction between the floor saver and the surface is created, which also largely prevents slippage of the chair in this state. This simultaneously increases the security for the user.
  • the first component 4 is firmly connected to the second component 5 in such a way that there is no usual bond, but a true chemical compound, such as can be produced in the casting process.
  • a larger transition region 6 is formed, which has both material of the first component 4 and material of the second component 5 and therefore has an average hardness.
  • This area is preferably in the area of the tubular frame, which not only improves the durability, but also the stability of the floor protector on the frame.
  • Fig. 2 shows a cross section through the Bodenschoner, after Fig. 1 , Evident is the opening 3, in which the pipe section of the bottom group 2a is introduced, the upper component 4 with the recess 10 for the fastening screw, the transition region 6 and the lower component 5. Also, the recess 8, in which the bottom slider 9 is introduced is.
  • This bead-like extension means that even when tilting the chair in the lateral direction of the already described for tilting forward effect occurs, namely that the chair rolls over the floor saver almost to the side and the contact with the bottom of the floor glider on the laterally projecting Bead made of soft material of the second component 5.
  • Fig. 3 shows a perspective view of the floor protector after Fig. 1 , in which the basic structure can be recognized again.
  • the upper component 4 via the lower component 5 and the described geometric configuration of the schooner with the forward protruding bead of the lower component 5.
  • Fig. 4 shows a second embodiment of a floor protector according to the invention, which is preferably used in the region of the bottom frame 2a, in which the tube of the seat support 2 bends over a mostly curved connection 2b upwards towards the seat. In this area, the tube frame does not end, so that closed on one side floor protector as in Fig. 1 shown is not usable. For this use, the floor protector therefore has a continuous opening 3, so that the kinking part of the carrier 2 can be accommodated.
  • this floor protector 1 has a harder upper component 4, a soft lower component 5 and a transition region 6, wherein in the upper component, a recess 10 is provided in the projection to securely attach the floor protector 1 to the bottom group 2a.
  • the lower region also has a recess 8 for receiving a bottom slide 9 here.
  • the lower component 5 also has right and left beyond the bottom slider protruding bead-shaped extension.
  • the lower component 5 protrudes clearly beyond the upper component 4 and thus ensures the effect already described above that, when tilting, the support surface of the floor glider does not touch the tubular steel frame itself, but on the soft component of the floor saver 1 passes. This ensures a preservation of the soil with at the same time increased stability.
  • the hard material of the upper component 4 is not preferred to the end of the bottom protector, but the medium-hard transition region 6 is pulled around the opening 3 in the end to the top.
  • Fig. 5 again shows a perspective view, here the ground cover Fig. 4 , Good to see are again the upper component 4, the lower component 5, the continuous opening 3 and the recess 10 for receiving the fastener in the rear projection. 7

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Legs For Furniture In General (AREA)

Abstract

The floor mat has a tubular understructure (2a) of a seat support, floor assembly, a planar base, and an opening formed in the axial direction of floor pan. The floor mat further comprises upper and lower components (4,5) having different hardness. The component (4) is arranged over half of the tubular understructure in the surrounding area of the floor mat. A rectangular recess is formed in the ground facing side of the mat for receiving a bottom slider (9) made of felt material or plastic.

Description

Gegenstand der ErfindungSubject of the invention

Die Erfindung betrifft einen Bodenschoner für einen Stuhl nach dem Oberbegriff des unabhängigen Anspruchs.The invention relates to a floor protector for a chair according to the preamble of the independent claim.

Stand der TechnikState of the art

Derartige Bodenschoner für Stühle, die einen Sitzträger mit einer im Wesentlichen rohrförmig ausgestalteten Bodengruppe, meist als Freischwinger ausgebildet, besitzen, sind aus dem Stand der Technik bekannt.Such floor protectors for chairs, which have a seat support with a substantially tubular designed bottom group, usually designed as a cantilever, are known from the prior art.

So sind Bodenschoner bekannt, die an dem unteren Teil des Rohrrahmens der Bodengruppe eines Sitzträgers befestigt sind. Es sind auch Ausgestaltungen bekannt, bei denen die Bodenschoner in der Mitte über eine Öffnung verfügen, so dass sie über das rohrförmige Bodenelement nach Montage umschließen. Die Befestigung erfolgt dabei regelmäßig mit einem Befestigungsmittel, etwa einer Schraube, verdeckt von unten, so dass das Befestigungsmittel nicht sichtbar ist. Diese Bodenschoner haben u.a. den Nachteil, dass sie keinerlei Elastizität und Federwirkung bieten.Thus, floor protectors are known, which are fastened to the lower part of the tubular frame of the floor assembly of a seat support. Embodiments are also known in which the floor protectors have an opening in the middle so that they enclose over the tubular floor element after assembly. The attachment is done regularly with a fastener, such as a screw, hidden from below, so that the fastener is not visible. These floor protectors have the disadvantage that they offer no elasticity and spring action.

Bekannt sind darüber hinaus Bodenschoner, die ein elastisches Material aufweisen und so für eine gewisse Flexibilität des Schoners sorgen. Diese weisen zum Teil auch zwei Komponenten auf, wobei die untere Komponente in der Regel die weiche Komponente ist. Auch der weiche Teil eines derartig bekannten Bodenschoners muss jedoch eine gewisse Härte aufweisen, da ein zu weicher Anteil zum einen zuviel Schmutz aufnimmt, zum anderen einen erheblichen Abrieb verursacht und daher nur sehr schlecht haltbar ist. Darüber hinaus darf der untere Teil des Bodenschoners nicht zu gut an der Oberfläche haften, da der Stuhl, etwa beim Aufstehen der auf ihm sitzenden Person, mit der Wade wegschiebbar sein soll. Der weiche Anteil derartig bekannter Bodenschoner weist eine sogenannte Shore-Härte von weit über 50 auf, so dass die dadurch vermittelte Elastizität begrenzt ist.Floor protectors are also known which have an elastic material and thus provide for a certain flexibility of the schooner. These sometimes also have two components, the lower component is usually the soft component. However, the soft part of such a well-known floor protector must also have a certain hardness, since too soft a portion on the one hand absorbs too much dirt, on the other causes considerable abrasion and therefore is very poorly durable. In addition, the lower part of the floor protector must not adhere too well to the surface, since the chair should be able to be pushed away with the calf, for example, when the person sitting on it is moving with the calf. The soft portion of such known floor saver has a so-called Shore hardness of well over 50, so that the mediated elasticity is limited.

Aus der US 2008/0100120 A1 ist ein Bodenschoner bekannt, der im Wesentlichen dreiteilig ausgestaltet ist und einen oberen Teil, einen unteren Teil und ein den oberen Teil mit dem unteren Teil verbindenden Mittelteil aufweist. Der obere Teil weist in axialer Richtung eine Öffnung auf, die das Ende des Stuhlbeines in radialer Richtung vollständig umschließt.From the US 2008/0100120 A1 For example, a floor protector is known, which is designed substantially in three parts and has an upper part, a lower part and a middle part connecting the upper part to the lower part. The upper part has an opening in the axial direction, which completely surrounds the end of the chair leg in the radial direction.

Aus der US 2010/0187399 A1 ist ein Bodenschoner für einen Stuhl bekannt, der einen Kopfabschnitt und einen den Kopfabschnitt in axialer Richtung verlängernden Bolzen aufweist. Der Bodenschoner wird mit dem Bolzen an einem Ende eines rohrförmigen Stuhlbeines befestigt, indem der Bolzen in das offene Ende des Stuhlbeines eingeschoben wird. An der Unterseite des Kopfabschnittes ist ein Bodengleiter aus Filz angeordnet.From the US 2010/0187399 A1 For example, a floor protector for a chair is known which has a head portion and a bolt extending the head portion in the axial direction. The floor protector is fastened with the bolt to one end of a tubular chair leg by inserting the bolt into the open end of the chair leg. At the bottom of the head portion of a floor glides is arranged felt.

Ein bisher ungelöstes Problem bildet das sogenannte Kippeln mit derartigen Stüh-len. Insbesondere bei in Schulen verwendeten Stühlen ist damit zu rechnen, dass den Stuhl verwendende Schüler mehr oder weniger häufig und lange mit dem Stuhl kippeln. Da dies mittlerweile in Schulen akzeptiert ist, häufen sich die Probleme mit der Beschädigung des in der Regel relativ weichen Fußbodens, der in Schulen oft aus Kunststoff, Linoleum oder Holz besteht, durch häufiges Kippeln.A hitherto unsolved problem forms the so-called tilting with such Stüh-len. Particularly in the case of chairs used in schools, it is to be expected that pupils using the chair will tilt the chair more or less frequently and for a long time. Since this is now accepted in schools, the problems with the damage of the usually relatively soft floor, which is often made of plastic, linoleum or wood in schools, by frequent tipping.

Aufgabe der ErfindungObject of the invention

Aufgabe der vorliegenden Erfindung ist es daher, einen Bodenschoner für Stühle bereit zu stellen, der die genannten Nachteile vermeidet und eine höhere elastische Wirkung bei gleichzeitiger Vermeidung hohen Abtriebs und hoher Anhaftung bereitstellt sowie geeignet ist, möglichen Beschädigungen des Untergrundes durch Kippeln mit dem Stuhl zu vermeiden oder zumindest zu verringern.Object of the present invention is therefore to provide a floor protector for chairs, which avoids the disadvantages mentioned and provides a higher elastic effect while avoiding high downforce and high adhesion and is suitable to avoid possible damage to the substrate by tilting the chair or at least reduce it.

Erfindungsgemäße LösungInventive solution

Diese Aufgabe wird durch einen Bodenschoner mit den Merkmalen des unabhängigen Anspruchs gelöst. Darüber hinaus stellt die Erfindung einen Stuhl mit einem Stahlrohrgestell zur Verfügung, der mit entsprechenden Bodenschonern ausgestattet ist.This object is achieved by a floor protector having the features of the independent claim. In addition, the invention provides a chair with a tubular steel frame, which is equipped with appropriate floor protectors.

Konkret wird ein Bodenschoner für einen Stuhl mit Sitzträger, bevorzugt für einen Stuhl mit einem federnd ausgebildeten Sitzträger, zur Verfügung gestellt. Der Sitzträger ist dabei bevorzugt als Freischwinger, idealerweise in Z-Form, ausgebildet, wobei aber auch andere Gestaltungen möglich sind. Der Sitzträger verfügt über eine im Wesentlichen rohrförmig ausgebildete Bodengruppe, die zumindest an den Rändern der durch die Bodengruppe gebildeten Grundfläche im Wesentlichen parallel zum Untergrund verläuft. Der bereit gestellte Bodenschoner weist eine Öffnung in axialer Richtung auf, mit der die Bodengruppe an einer der Enden radial umschließbar ist, wobei die dem Untergrund zugewandte Fläche des Bodenschoners im Wesentlichen eben ist. Der Bodenschoner weist mindestens eine erste - obere - Komponente und eine zweite - untere - Komponente mit verschiedener Härte auf, wobei die in axialer Richtung verlaufende Öffnung an der dem Boden abgewandten Seite durch die erste - obere - Komponente und an der dem Boden zugewandten Seite durch die zweite - untere - Komponente gebildet wird, wobei die erste Komponente mit der zweiten Komponente im Bereich der Öffnung fest verbunden ist und wobei sich die erste Komponente in axialer Richtung mindestens über die Hälfte des die Bodengruppe umschließenden Bereiches des Bodenschoners erstreckt. Darüber hinaus verfügt der Bodenschoner in der dem Boden zugewandten Seite über eine vorzugsweise rechteckige Ausnehmung zur Aufnahme eines Bodengleiters, bevorzugt aus Filzmaterial oder Kunststoff. Ein solcher Bodengleiter aus den genannten Materialien ist vorzugsweise fest mit dem Bodenschoner verbunden, etwa durch Verklebung.Specifically, a floor protector for a chair with seat support, preferably for a chair with a spring-trained seat support, provided. The seat support is preferably designed as a cantilever, ideally in Z-shape, but other designs are possible. The seat carrier has an essentially tubular floor group, which extends at least at the edges of the base area formed by the floor group substantially parallel to the ground. The floor protector provided has an opening in the axial direction, with which the floor group can be enclosed radially at one of the ends, wherein the surface of the floor protector facing the substrate is substantially planar. The floor protector has at least one first - upper - component and a second - lower - component with different hardness, wherein the axially extending opening on the side facing away from the bottom through the first - upper - component and on the ground-facing side the second - lower - component is formed, wherein the first component with the second component in the region of the opening is firmly connected and wherein the first component extends in the axial direction at least over half of the bottom group enclosing area of the bottom protector. In addition, the floor protector in the floor-facing side has a preferably rectangular recess for receiving a floor slide, preferably made of felt material or plastic. Such a glider made of the materials mentioned is preferably firmly connected to the floor protector, such as by gluing.

In einer bevorzugten Ausführungsform erfolgt die Verbindung zwischen erster und zweiter Komponente in einem Übergangsbereich stufenlos, wobei der stufenlose feste Übergang vorzugsweise durch Vergießen der beiden Komponenten herstellbar ist. Die zweite Komponente weist vorzugsweise eine Shore-Härte zwischen 40 und 60, bevorzugt etwa 50, auf und beinhaltet vorzugsweise thermoplastische Elastomere (TPE) als Material.In a preferred embodiment, the connection between the first and second components in a transition region is continuous, wherein the continuous solid transition is preferably produced by casting the two components. The second component preferably has a Shore hardness between 40 and 60, preferably about 50, and preferably includes thermoplastic elastomers (TPE) as the material.

Zur Befestigung des Bodenschoners ist es günstig, wenn er an der Oberseite über eine Ausnehmung zur Aufnahme von Befestigungsmitteln, vorzugsweise einer Schraube, verfügt, um den Bodenschoner fest aber lösbar mit der Bodengruppe zu verbinden.To attach the floor protector, it is advantageous if it has at the top a recess for receiving fastening means, preferably a screw, to connect the floor protector firmly but detachably connected to the bottom group.

Vorteilhaft ist es weiterhin, wenn mindestens eine der beiden Komponenten oder des Übergangsbereiches des Bodenschoners eine Öffnung so überragt, dass die Öffnung an der der Bodengruppe abgewandten Seite im Wesentlichen verschlossen ist. Günstig ist es darüber hinaus, wenn die zweite Komponente oder der Übergangsbereich zwischen erster und zweiter Komponente des Bodenschoners im Bereich des Verbindungsstücks die Bodengruppe vollständig radial umschließt.It is furthermore advantageous if at least one of the two components or of the transition area of the floor protector projects beyond an opening in such a way that the opening on the side facing away from the floor group is substantially closed. In addition, it is favorable if the second component or the transition region between the first and second components of the floor protector in the area of the connecting piece surrounds the floor group completely radially.

Ein ganz besonderer Vorteil wird erreicht, wenn die zweite Komponente die erste Komponente an der der Bodengruppe abgewandten Seite in axialer Richtung und/oder an der der Bodengruppe abgewandten Seite senkrecht zur axialen Richtung und parallel zum Untergrund wulstartig überragt.A very particular advantage is achieved when the second component protrudes beyond the first component on the side facing away from the bottom group in the axial direction and / or on the side facing away from the bottom group perpendicular to the axial direction and parallel to the ground like a bead.

Günstig ist es auch, wenn die erste Komponente die zweite Komponente an der der Bodengruppe zugewandten Seite in axialer Richtung überragt und eineIt is also favorable if the first component projects beyond the second component on the side facing the floor group in the axial direction and one

Auskragung an der Oberseite bildet, in der sich vorzugsweise die Ausnehmung zur Aufnahme der Befestigungsvorrichtung befindet.Projection at the top forms, in which preferably the recess for receiving the fastening device is located.

Offenbart ist auch ein Stuhl mit einem Stahlrohrgestell als Stuhlträger und Bodengruppe, dadurch gekennzeichnet, dass die Bodengruppe des Stuhles Bodenschoner nach einem der vorhergehenden Ansprüche aufweist.Disclosed is also a chair with a tubular steel frame as a chair support and floor assembly, characterized in that the bottom group of the chair has floor protector according to one of the preceding claims.

Kurzbeschreibung der FigurenBrief description of the figures

Geeignete Ausführungsformen werden anhand der nachfolgenden Figuren im Einzelnen beschrieben. Es zeigen:

Fig.1
Ein Bodenschoner für ein Rohrendstück, bevorzugt im vorderen Bereich eines Freischwingergestells eines Stuhles, in der Seitenansicht,
Fig. 2
einen Querschnitt durch einen solchen Bodenschoner,
Fig. 3
eine perspektivische Ansicht eines solchen Bodenschoners,
Fig. 4
einen Bodenschoner zur Verwendung im rückwärtigen Teil eines Freischwingergestells in der Seitenansicht sowie
Fig. 5
eine perspektivische Ansicht eines solchen Bodenschoners
Suitable embodiments will be described in detail with reference to the following figures. Show it:
Fig.1
A floor protector for a pipe end piece, preferably in the front region of a cantilever frame of a chair, in side view,
Fig. 2
a cross section through such a floor protector,
Fig. 3
a perspective view of such a floor protector,
Fig. 4
a floor protector for use in the rear part of a cantilever frame in the side view and
Fig. 5
a perspective view of such a floor protector

Detaillierte Beschreibung der ErfindungDetailed description of the invention

Fig. 1 zeigt einen erfindungsgemäßen Bodenschoner 1 in einer seitlichen Ansicht. Diese Variante des erfindungsgemäßen Bodenschoners ist geeignet, auf ein auslaufendes Rohr gesteckt und dort befestigt zu werden, wobei das Roh einen Teil der Bodengruppe 2a eines Sitzträgers 2 bildet. Bei einem klassischen Freischwinger, wie er als Schulstuhl verwendet wird, sind dies die vorderen beiden Enden des Stahlrohrgestells. Der Bodenschoner weist im hinteren Bereich eine Öffnung 3 auf, die das Rohrende der Bodengruppe 2a aufnimmt. Fig. 1 shows a floor protector 1 according to the invention in a side view. This variant of the floor protector according to the invention is suitable for being put on an outgoing pipe and being fastened there, the raw forming part of the floor group 2 a of a seat support 2. In a classic cantilever chair, as used as a school chair, these are the front two ends of the tubular steel frame. The floor protector has at the rear of an opening 3, which receives the pipe end of the bottom group 2a.

Der Bodenschoner besteht aus einer ersten - oberen - Komponente 4 sowie einer zweiten - unteren - Komponente 5 und einem Übergangsbereich 6.The floor protector consists of a first - upper - component 4 and a second - lower - component 5 and a transition region 6.

Die obere Komponente ist aus einem harten Material mit hoher Abriebfestigkeit gefertigt. Sie schützt den Bodenschoner von oben und dient gleichzeitig als Ablagefläche für die Füße des Nutzers, da die Erfahrung zeigt, dass auf derartigen Stühlen sitzende Personen die Füße gerne im Bereich der vorderen Bodenschoner auf dem Bodengestell ablegen.The upper component is made of a hard material with high abrasion resistance. It protects the floor protector from above and at the same time serves as a storage area for the user's feet, as experience shows that people sitting on such chairs like to place their feet in the area of the front floor protectors on the floor stand.

Die obere Komponente 4 kragt im hier gezeigten Ausführungsbeispiel nach hinten entlang des Rohrgestells im Wege einer Auskragung aus, die zusätzlich die Funktion als Ablagefläche für die Füße unterstützt. Gleichzeitig ist im vorliegenden Beispiel in dem Übergangsbereich zwischen vorderem und hinteren Teil der oberen Komponente 4 eine Ausnehmung 10 eingelassen, über die von oben ein Befestigungsmittel, bevorzugt eine Schraube, eingebracht werden kann, um den Bodenschoner fest mit dem Rohrelement der Bodengruppe 2a zu verbinden.The upper component 4 projects in the embodiment shown here back along the tube frame by way of a projection, which also supports the function as a storage area for the feet. At the same time in the present example, in the transition region between the front and rear part of the upper component 4, a recess 10 is inserted, via the above from a fastening means, preferably a screw, can be introduced to the Bodenschoner firmly connected to the pipe element of the bottom group 2a.

Da die Schraubverbindung über den festen Teil des Bodenschoners erfolgt, sorgt dies für eine hohe Haltekraft und Stabilität. Gleichzeitig wird durch das Einschrauben der Schraube von oben, anders als nach dem Stand der Technik, der die Befestigung regelmäßig von unten her vorsieht, erreicht, dass sich zum einen die Schraube schlechter löst, zum anderen selbst eine sich lösende Schraube nicht nur leicht erreicht werden kann, sondern auch nicht nach unten absteht. Damit kann eine weitere Quelle für Beschädigungen des Untergrundes ausgeschlossen werden.Since the screw connection is made via the fixed part of the floor protector, this ensures a high holding power and stability. At the same time by screwing in the screw from above, unlike the prior art, which provides the attachment regularly from below, achieved, on the one hand solves the screw worse, on the other hand even a loosening screw are not only easily achieved can, but also does not stick out. Thus, another source of damage to the substrate can be excluded.

Im unteren Bereich des Bodenschoners 1 befindet sich die zweite Komponente 5, die ein sehr weiches Material, bevorzugt mit einer Shore-Härte von zwischen 40 und 60, besonders bevorzugt etwa 50, aufweist, um eine im Vergleich zu Bodenschonern nach dem Stand der Technik deutlich erhöhte Elastizität zu bieten. Um das im Stand der Technik vorhandene Problem des starken Abriebs bzw. der überhöhten Rutschfestigkeit eines sehr weichen Materials zu begegnen, verfügt der Bodenschoner über eine Ausnehmung 8, in die ein Bodengleiter 9 eingebracht und befestigt werden kann, so dass er letztlich aus insgesamt drei Komponenten besteht. Je nach Untergrund kann der Bodengleiter etwa aus festem Kunststoff bestehen, wobei sich auf harten Böden Gleiter aus einem filzähnlichen Material besonders bewährt haben, da diese gut gleiten und gleichzeitig einen hohen Schutz des Bodens bieten, in dem sie etwa Schmutz wegschieben können.In the lower area of the floor protector 1 is the second component 5, which has a very soft material, preferably with a Shore hardness of between 40 and 60, particularly preferably about 50, to one in comparison to floor protectors according to the prior art clearly to provide increased elasticity. In order to counteract the problem of high abrasion or excessive slip resistance of a very soft material existing in the state of the art, the floor protector has a recess 8, into which a floor slide 9 can be inserted and fastened, so that it ultimately consists of a total of three components consists. Depending on the surface of the floor glider can be made of solid plastic, where on hard floors glides made of a felt-like material have proven to be particularly good because they slide well and at the same time provide a high level of protection of the soil in which they can push dirt around.

In dem das Rohr abschließenden und damit dem Bodengestell abgewandten Teil des Bodenschoners ist bei der hier gezeigten Ausführungsform die vordere Öffnung 3 vollständig verschlossen. Zum einen ist die harte obere Abdeckung, die durch die erste Komponente 4 gebildet wird, über die Öffnung gezogen. Die zweite Komponente 5 ragt in diesem Bereich in Axialrichtung über das Ende der harten ersten Komponente 4 hinaus und bildet somit im Endbereich des Bodenschoners eine Wulst aus dem besonders weichen Material der zweiten Komponente 5. Dies führt zunächst dazu, dass Beschädigung von Möbeln oder dergleichen, gegen die die Bodengruppe mit dem darauf befestigten Bodenschoner 1 geschlagen wird, weitgehend vermieden werden, da durch die weiche vordere Abdeckung der Aufprall ganz erheblich gemindert wird, insbesondere im Vergleich zu dem nach vorne offenen Stahlrohr, wie es bei den Bodenschonern nach dem Stand der Technik der Fall ist.In the pipe terminating and thus the floor frame facing away from the bottom protector is in the embodiment shown here, the front opening 3 completely closed. First, the hard upper cover formed by the first component 4 is pulled over the opening. The second component 5 protrudes in this area in the axial direction beyond the end of the hard first component 4 and thus forms a bead of the particularly soft material of the second component 5 in the end region of the bottom protector. This initially leads to damage to furniture or the like, against which the floor group is struck with the attached bottom protector 1, are largely avoided because the impact is significantly reduced by the soft front cover, especially compared to the open-front steel tube, as in the floor protectors according to the prior art the case is.

Ein besonderer Vorteil des nach vorne überstehenden Wulstes, gebildet durch die besonders weiche zweite Komponente 5, ist jedoch der, dass beim Kippeln des Benutzers der Boden geschont wird. Bei einem derartigen Kippeln würde der Bereich des Bodenschoners, dem sich die Auskragung 7 befindet, angehoben, so dass der vordere Bereich des Bodenschoners über den Boden quasi abrollt und mit diesen in Kontakt kommt. Im gekippten Zustand ist damit nicht mehr (ausschließlich) der Bodengleiter 9 in Kontakt mit dem Untergrund, sondern die vordere Wulst der zweiten Komponente 5. Da diese besonders weich ausgestaltet ist, schont dies den Untergrund in ganz besonderer Weise, so dass auch bei längerem Kippeln eine Beschädigung auch eines weichen Linoleumuntergrundes in der Regel vermieden wird. Darüber hinaus sorgt die vergleichsweise hohe Haftreibung des besonders weichen Materials dafür, dass im gekippten Zustand eine besonders hohe Haftreibung zwischen Bodenschoner und Untergrund entsteht, was ein Wegrutschen des Stuhles in diesem Zustand ebenfalls weitgehend verhindert. Damit steigt gleichzeitig die Sicherheit für den Benutzer.However, a particular advantage of the protruding bead, formed by the particularly soft second component 5, is that the soil is spared when the user tilts. With such tilting, the area of the floor protector that has the projection 7 would be raised, so that the front area of the floor protector virtually rolls over the floor and comes into contact with it. In the tilted state is thus no longer (exclusively) the bottom slider 9 in contact with the substrate, but the front bead of the second component 5. Since this is particularly soft, this protects the ground in a very special way, so that even with prolonged tipping Damage even a soft linoleum background is usually avoided. In addition, the comparatively high static friction of the particularly soft material ensures that in the tilted state, a particularly high static friction between the floor saver and the surface is created, which also largely prevents slippage of the chair in this state. This simultaneously increases the security for the user.

Im gezeigten Ausführungsbeispiel ist die erste Komponente 4 mit der zweiten Komponente 5 derartig fest verbunden, dass hier keine übliche Klebung vorliegt, sondern eine echte chemische Verbindung, wie sie etwa im Gießverfahren hergestellt werden kann. Dies führt dazu, dass ein größerer Übergangsbereich 6 entsteht, der sowohl Material der ersten Komponente 4 als auch Material der zweiten Komponente 5 aufweist und daher eine mittlere Härte hat. Dieser Bereich befindet sich bevorzugt im Bereich des Rohrgestells, was nicht nur die Haltbarkeit verbessert, sondern auch die Stabilität des Bodenschoners am Gestell.In the exemplary embodiment shown, the first component 4 is firmly connected to the second component 5 in such a way that there is no usual bond, but a true chemical compound, such as can be produced in the casting process. As a result, a larger transition region 6 is formed, which has both material of the first component 4 and material of the second component 5 and therefore has an average hardness. This area is preferably in the area of the tubular frame, which not only improves the durability, but also the stability of the floor protector on the frame.

Fig. 2 zeigt einen Querschnitt durch den Bodenschoner, nach Fig. 1. Zu erkennen ist die Öffnung 3, in die das Rohrstück der Bodengruppe 2a eingeführt wird, die obere Komponente 4 mit der Ausnehmung 10 für die Befestigungsschraube, der Übergangsbereich 6 sowie die untere Komponente 5. Ebenfalls ist die Ausnehmung 8, in die der Bodengleiter 9 eingebracht ist. Fig. 2 shows a cross section through the Bodenschoner, after Fig. 1 , Evident is the opening 3, in which the pipe section of the bottom group 2a is introduced, the upper component 4 with the recess 10 for the fastening screw, the transition region 6 and the lower component 5. Also, the recess 8, in which the bottom slider 9 is introduced is.

Bei diesem ist Querschnitt gut zu erkennen, dass die untere Komponente 5 im Bereich der Auflagefläche parallel zum Untergrund und senkrecht zur axialen Richtung wulstartig erweitert ist.In this cross-section is clearly visible that the lower component 5 is widened in the region of the support surface parallel to the ground and perpendicular to the axial direction.

Diese wulstartige Erweiterung führt dazu, dass auch bei einem Kippen des Stuhles in seitlicher Richtung der bereits für das Kippen nach vorne beschriebene Effekt eintritt, dass nämlich der Stuhl über den Bodenschoner quasi zur Seite abrollt und der Kontakt mit dem Boden vom Bodengleiter auf den seitlich überragenden Wulst aus weichem Material der zweiten Komponente 5 erfolgt. Damit ist auch beim seitlichen Kippeln neben einer hohen Elastizität eine Schonung des Bodens bei gleichzeitig erhöhter Standsicherheit durch zunehmende Reibung möglich.This bead-like extension means that even when tilting the chair in the lateral direction of the already described for tilting forward effect occurs, namely that the chair rolls over the floor saver almost to the side and the contact with the bottom of the floor glider on the laterally projecting Bead made of soft material of the second component 5. This is also the lateral tilting in addition to a high elasticity a protection of the soil at the same time increased stability due to increasing friction possible.

Fig. 3 zeigt eine perspektivische Ansicht des Bodenschoners nach Fig. 1, in der der prinzipielle Aufbau nochmals erkannt werden kann. Deutlich zu erkennen ist die obere Komponente 4, die über die untere Komponente 5 sowie die beschriebene geometrische Ausgestaltung des Schoners mit dem nach vorne überstehenden Wulst der unteren Komponente 5. Ebenfalls gut erkennbar ist die kragenförmige Ausweitung 7, in der die Ausnehmung 10 zur Aufnehmung des Befestigungsmaterials eingelassen ist. Fig. 3 shows a perspective view of the floor protector after Fig. 1 , in which the basic structure can be recognized again. Clearly visible is the upper component 4, via the lower component 5 and the described geometric configuration of the schooner with the forward protruding bead of the lower component 5. Also clearly visible is the collar-shaped expansion 7, in which the recess 10 for Aufnehmung of Mounting material is embedded.

Fig. 4 zeigt eine zweite Ausgestaltung eines erfindungsgemäßen Bodenschoners, der bevorzugt in dem Bereich des Bodengestells 2a verwendet wird, in dem das Rohr des Sitzträgers 2 über eine meist gebogene Verbindung 2b nach oben in Richtung Sitzschale abknickt. In diesem Bereich endet das Rohrgestell nicht, so dass ein an einer Seite verschlossener Bodenschoner wie in Fig. 1 gezeigt nicht verwendbar ist. Für diese Verwendung hat der Bodenschoner daher eine durchgehende Öffnung 3, so dass auch der abknickende Teil des Trägers 2 Aufnahme finden kann. Fig. 4 shows a second embodiment of a floor protector according to the invention, which is preferably used in the region of the bottom frame 2a, in which the tube of the seat support 2 bends over a mostly curved connection 2b upwards towards the seat. In this area, the tube frame does not end, so that closed on one side floor protector as in Fig. 1 shown is not usable. For this use, the floor protector therefore has a continuous opening 3, so that the kinking part of the carrier 2 can be accommodated.

Auch dieser Bodenschoner 1 weist eine härtere obere Komponente 4, eine weiche untere Komponente 5 und einen Übergangsbereich 6 auf, wobei in der oberen Komponente eine Ausnehmung 10 in der Auskragung vorhanden ist, um den Bodenschoner 1 an der Bodengruppe 2a sicher zu befestigen. Der untere Bereich weist auch hier eine Ausnehmung 8 zur Aufnahme eines Bodengleiters 9 auf. Im hier nicht gezeigten Querschnitt verfügt die untere Komponente 5 ebenfalls über rechts und links über den Bodengleiter hinausstehende wulstförmige Erweiterung. Im hinteren Bereich des Bodenschoners, in dem Sitzträger 2 nach oben abzeigt, ragt die untere Komponente 5 erneut deutlich über die obere Komponente 4 hinaus und sorgt damit für den bereits oben beschriebenen Effekt, dass beim Kippeln die Auflagefläche vom Bodengleiter nicht auf das Stahlrohrgestell selbst, sondern auf die weiche Komponente des Bodenschoners 1 übergeht. Dies sorgt für eine Schonung des Bodens bei gleichzeitig erhöhter Standsicherheit.Also, this floor protector 1 has a harder upper component 4, a soft lower component 5 and a transition region 6, wherein in the upper component, a recess 10 is provided in the projection to securely attach the floor protector 1 to the bottom group 2a. The lower region also has a recess 8 for receiving a bottom slide 9 here. In cross section, not shown here, the lower component 5 also has right and left beyond the bottom slider protruding bead-shaped extension. In the rear area of the floor protector, in which the seat support 2 points upward, the lower component 5 protrudes clearly beyond the upper component 4 and thus ensures the effect already described above that, when tilting, the support surface of the floor glider does not touch the tubular steel frame itself, but on the soft component of the floor saver 1 passes. This ensures a preservation of the soil with at the same time increased stability.

Anders als nach dem Bodenschoner nach Fig. 1 ist hier das harte Material der oberen Komponente 4 nicht bis zum Ende des Bodenschoners vorgezogen, sondern der mittelharte Übergangsbereich 6 ist im Endbereich bis an die Oberseite um die Öffnung 3 herumgezogen. Alternativ ist es auch möglich, nicht den mittelharten Übergangsbereich 6, sondern die weiche zweite Komponente 5 bis zu dieser Stelle umlaufen zu lassen.Other than after the Bodenschoner Fig. 1 Here, the hard material of the upper component 4 is not preferred to the end of the bottom protector, but the medium-hard transition region 6 is pulled around the opening 3 in the end to the top. Alternatively, it is also possible not to circulate the medium-hard transition region 6, but the soft second component 5 up to this point.

Dies führt zu einer weiteren Verbesserung der elastischen Eigenschaften, da auch das Stahlrohrgestell selbst bei Belastung elastisch wird. Es bewegt sich damit nicht gegen eine, wie im Stand der Technik üblich, feste Komponente des oberen Teils des Bodenschoners 4, sondern hat stattdessen Kontakt mit einer weichen oder zumindest deutlichen weicheren Komponente entweder der unteren Komponente 5 oder des Übergangsbereiches 6 des Bodenschoners 1.This leads to a further improvement of the elastic properties, since the tubular steel frame becomes elastic even under load. Thus, it does not move against a solid component of the upper part of the floor protector 4 as is usual in the prior art, but instead has contact with a soft or at least distinctly softer component of either the lower component 5 or the transitional area 6 of the floor protector 1.

Fig. 5 zeigt erneut eine perspektivische Ansicht, hier des Bodenschoners nach Fig. 4. Gut zu erkennen sind wieder die obere Komponente 4, die untere Komponente 5, die durchlaufende Öffnung 3 sowie die Vertiefung 10 zur Aufnahme des Befestigungsmittels in der hinteren Auskragung 7. Fig. 5 again shows a perspective view, here the ground cover Fig. 4 , Good to see are again the upper component 4, the lower component 5, the continuous opening 3 and the recess 10 for receiving the fastener in the rear projection. 7

Claims (11)

  1. Floor protector (1) for a chair with a resiliently configured seat support, whereby the seat support, preferably configured as a cantilever, has a floor assembly (2a) with a substantially tubular configuration that extends substantially parallel to the ground at least on the edges of the base surface formed by the floor assembly (2a), whereby the floor protector (1) has an opening (3) in axial direction with which the floor assembly (2a) can be radially enclosed at one of the ends, whereby the surface of the floor protector (1) that is turned to the ground is substantially flat, characterized in that the floor protector (1) has at least one first - upper - component (4) and one second - lower - component (5) with a different hardness, whereby the opening (3) extending in axial direction on the side facing away from the floor is formed by the first - upper - component (4) and on the side turned to the floor by the second - lower - component (5), whereby the first component (4) is fixedly connected to the second component (5) in the area of the opening (5) and whereby the first component (4) extends in axial direction at least over half of the area of the floor protector (1) that encloses the floor assembly (2a) and whereby the floor protector (1) has a preferably rectangular recess (8) in the side turned to the floor for receiving a slider pad (9), preferable made of felt material or plastics.
  2. Floor protector (1) according to claim 1, characterized in that the junction between the first and the second component (4, 5) takes place steplessly in a transition area (6), whereby the stepless fixed transition can be made preferably by casting the two components.
  3. Floor protector (1) according to one of the preceding claims, characterized in that the second component (5) is softer than the first component (4) and contains preferably thermoplastic elastomers (TPE) as material.
  4. Floor protector (1) according to one of the preceding claims, characterized in that it has a recess (10) on the upper side for receiving fixing means, preferably a screw, with which the floor protector (1) can be connected fixedly but removably with the floor assembly (2a).
  5. Floor protector (1) according to one of the claims 1 to 4, characterized in that at least one of the two components (4, 5) or the transition area (6) of the floor protector (1) stands above the opening (3) so that the opening (3) is substantially closed on the side facing away from the floor assembly (2a).
  6. Floor protector (1) according to one of the claims 1 to 4, characterized in that the second component (5) of the floor protector (1) is configured in such a way that the floor assembly (2a) can be completely radially enclosed with it in the area of a connecting piece (2b) of the floor assembly (2a) with the seat support.
  7. Floor protector (1) according to one of the claims 1 to 4, characterized in that the transition area (6) between the first and the second component (4, 5) of the floor protector (1) is configured in such a way that the floor assembly (2a) can be completely radially enclosed with it in the area of a connecting piece (2b) of the floor assembly (2a) with the seat support.
  8. Floor protector (1) according to one of the preceding claims, characterized in that the second component (5) overhangs the first component (4) in axial direction.
  9. Floor protector (1) according to one of the preceding claims, characterized in that the first component (4) overhangs the second component (5) in axial direction and forms an overhang on the upper side.
  10. Floor protector (1) according to one of the preceding claims, characterized in that the second component (5) overhangs the first component (4) in the manner of a bulge perpendicularly to the axial direction and parallel to the ground.
  11. Chair with a tubular steel frame as seat support and floor assembly, characterized in that the floor assembly of the chair has floor protectors (1) according to one of the preceding claims.
EP11177465.9A 2010-08-12 2011-08-12 Floor protector for a chair Active EP2420161B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010039292 DE102010039292B4 (en) 2010-08-12 2010-08-12 Floor protector for a chair

Publications (2)

Publication Number Publication Date
EP2420161A1 EP2420161A1 (en) 2012-02-22
EP2420161B1 true EP2420161B1 (en) 2013-11-20

Family

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EP11177465.9A Active EP2420161B1 (en) 2010-08-12 2011-08-12 Floor protector for a chair

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EP (1) EP2420161B1 (en)
DE (1) DE102010039292B4 (en)
DK (1) DK2420161T3 (en)
ES (1) ES2447833T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3026929B1 (en) * 2014-10-10 2017-03-24 Quetzal Burosystem TABLE RING INTENDED TO BE MOUNTED ON A TABLE
DE102020200701A1 (en) 2020-01-22 2021-07-22 Sedus Stoll Aktiengesellschaft FLOOR COVER FOR A SEAT FURNITURE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8403093U1 (en) * 1984-02-03 1984-05-03 Voit, Reinhard, 7101 Flein FLOOR COVER FOR FURNITURE OR THE LIKE
AT1057U1 (en) * 1995-11-15 1996-10-25 Mayr Johann FURNITURE GLIDER
DE10049294A1 (en) * 2000-10-04 2002-05-08 Ver Spezialmoebel Verwalt Thrust bearings
US7380879B2 (en) * 2006-10-30 2008-06-03 Virco Mgmt. Corporation Self-leveling furniture leg foot
US7837161B2 (en) * 2009-01-23 2010-11-23 Hiwatt Products, Llc Furniture-foot assemblies

Also Published As

Publication number Publication date
DE102010039292B4 (en) 2012-10-04
ES2447833T3 (en) 2014-03-13
EP2420161A1 (en) 2012-02-22
DE102010039292A1 (en) 2012-02-16
DK2420161T3 (en) 2014-02-24

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