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EP4332340B1 - Part of a supporting frame with corner connector - Google Patents

Part of a supporting frame with corner connector Download PDF

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Publication number
EP4332340B1
EP4332340B1 EP23194134.5A EP23194134A EP4332340B1 EP 4332340 B1 EP4332340 B1 EP 4332340B1 EP 23194134 A EP23194134 A EP 23194134A EP 4332340 B1 EP4332340 B1 EP 4332340B1
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EP
European Patent Office
Prior art keywords
support frame
corner connector
frame according
polymer sleeve
receptacles
Prior art date
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Application number
EP23194134.5A
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German (de)
French (fr)
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EP4332340C0 (en
EP4332340A1 (en
Inventor
Barnabas Toth
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B Components GmbH
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B Components GmbH
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Publication date
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Publication of EP4332340A1 publication Critical patent/EP4332340A1/en
Application granted granted Critical
Publication of EP4332340B1 publication Critical patent/EP4332340B1/en
Publication of EP4332340C0 publication Critical patent/EP4332340C0/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
    • E06B3/964—Corner joints or edge joints for windows, doors, or the like frames or wings using separate connection pieces, e.g. T-connection pieces
    • E06B3/968—Corner joints or edge joints for windows, doors, or the like frames or wings using separate connection pieces, e.g. T-connection pieces characterised by the way the connecting pieces are fixed in or on the frame members
    • E06B3/98—Corner joints or edge joints for windows, doors, or the like frames or wings using separate connection pieces, e.g. T-connection pieces characterised by the way the connecting pieces are fixed in or on the frame members the connecting pieces being specially adapted for drawing the frame members towards each other
    • E06B3/982—Mitre joints

Definitions

  • the present invention relates to a support frame, in particular a part of a support frame with at least two mitred hollow profiles with at least one inner chamber and at least one corner connector engaging into the hollow profiles with its legs according to the preamble of claim 1.
  • the corner connector can have receptacles for insertable fastening means, by means of which the hollow profiles and the corner connector can be connected, wherein the fastening means can be designed as bolts (80) that can be driven into bores in the hollow profiles and into receptacles in the legs of the corner connector and the bolts are positively secured in at least one of the receptacles through which the bolt extends.
  • the fastening means can be designed as bolts (80) that can be driven into bores in the hollow profiles and into receptacles in the legs of the corner connector and the bolts are positively secured in at least one of the receptacles through which the bolt extends.
  • the state of the art is the DE 299 03 649 U1 known, in which a support frame is made of hollow profiles with corner connectors, which are connected by means of a bolt connection.
  • the support frame and the corner connectors are made of metal.
  • This support frame has the significant disadvantage that the The holes provided in the hollow profiles and corner connectors must be perfectly aligned in order to be able to drive the bolt properly through the two parts.
  • torsions in the design must be taken into account when manufacturing the supporting frame, which for manufacturing reasons can only be corrected by individual adjustment and not by prior calculation.
  • Corner connectors with inserted sleeves are in DE2209682A1 and FR1545527A revealed.
  • the present invention has the object of counteracting the disadvantages of the prior art and of providing a reliable connection between corner connectors and hollow profiles of a supporting frame, which overcomes the disadvantages of the prior art.
  • the receptacles are designed as separate/discrete polymer sleeves inserted into the legs of the corner connector, in which at least one recess is provided for the positive reception of the bolts in the leg.
  • the hollow profiles and the corner connectors are connected in the correct state by means of the bolts under prestress, in that the holes of the hollow profiles and the receptacles of the corner connectors are arranged with a partial offset to one another.
  • the polymer sleeves provide the necessary flexibility and elasticity to compensate for any misalignment between the holes in the hollow profiles and the receptacles on the corner connectors, thus making subsequent correction work on the individual components of the supporting frame can be avoided.
  • an offset between the holes in the hollow profiles and the elastic mounts can lead to a prestress between the bolts and the parts of the supporting frame in the connected state, which further increases the connection strength.
  • the polymer sleeve of one leg has two or more recesses for bolts and/or is formed in one piece.
  • the distance between the recesses in the polymer sleeve can be adapted to the distance between the corresponding holes in the hollow profile.
  • the adaptation can have an offset relative to the holes, which compresses or pulls apart the body of the polymer sleeve with prestress in the connected state of the support frame, whereby the positive connection of the hollow profile and corner connector by means of the bolt in the polymer sleeve can be supplemented by or replaced by a frictional connection.
  • the polymer sleeve can also serve as a spring element between the corner connector and the hollow profile and can be provided with a pre-settable spring constant/spring force, whereby the requirements of the support frame can be adapted depending on the area of application.
  • the spring constant or spring effect of the part of a support frame according to the invention can be adjusted on the one hand by selecting the polymer, i.e. the intrinsic material-bound spring constant, and also by a spring tension of the material of the polymer sleeve by appropriately selecting the distance between the recesses in relation to the distance between the holes in the hollow profile.
  • a particularly large offset between the receptacles in the corner connector and the corresponding holes in the hollow profile can pre-strengthen the material of the polymer sleeve in a special way and create and/or increase a frictional connection.
  • the offset between the hole(s) in the hollow profile and the at least one recess in the polymer sleeve can preferably be 0.1 mm to 5 mm.
  • the polymer sleeve can be fixed in the leg in a form-fitting and/or force-fitting manner.
  • the polymer sleeve can be elastic and/or allow the bolt to be moved to compensate for the offset.
  • the sleeve can be designed with a conical outer contour, with a receiving area in the leg of the corner connector for the polymer sleeve in its inner circumference/inner contour roughly corresponding to the outer circumference/outer contour of the polymer sleeve, thereby providing a particularly effective fixation in the direction of the tapered recess in the corner connector.
  • the polymer sleeve is made of polyethylene, polypropylene, polyurethane or polyacrylonitrile or a mixture of the aforementioned.
  • the choice of polymer can have a direct influence on the spring constant or the spring effect between the corner connector and the hollow profile.
  • the construction height of the corner connector corresponds to the clear height of the inner chamber in the hollow profile.
  • a separate inner chamber is provided for each leg on the hollow profile.
  • two adjacent hollow profiles can be connected via more than one corner connector. If more than one corner connector is provided, it can be expedient to provide the hollow profile with separate inner chambers for each corner connector.
  • the shape of the inner chamber is expediently adapted to each of the corner connectors or their legs.
  • At least one polymer sleeve for setting a spring constant e.g. of its receptacle (10) is arranged in an exchangeable manner in the latter.
  • Different polymer sleeves with different elastic properties can thus be provided for adapting the corner connector and its spring connection properties.
  • the inner chamber is adapted to the shape of the leg, in particular the inner chamber surrounds the leg in a form-fitting manner.
  • Figure 1 shows a receptacle 10 according to the present invention, which can be designed as a polymer sleeve.
  • the receptacle 10 has at least one recess 20, which is designed to receive a connecting bolt for connecting the corner connector and the hollow profile, preferably in a form-fitting manner.
  • the holder is designed with more than one recess to accommodate more than one bolt.
  • the shape of the receptacle 10 can be described as bone-shaped or 8-shaped in cross section.
  • the sleeve 10 is preferably designed to extend at least over the length of the bolt to be accommodated and/or preferably to be completely accommodated in the corner connector.
  • recesses 30 or bores 30 can be provided in the material of the receptacle 10, which can locally influence the spring force or spring constant of the receptacle between the bores 30 and the recess 20.
  • a change in the elasticity of the material is influenced in particular along an axis of the recess 20 and holes 30, whereas the elasticity of the material of the receptacle in other areas remains significantly unaffected. This allows different elasticities to be provided in a targeted manner in different spatial directions transverse to the longitudinal axis of the bolt receptacles 20.
  • Figure 2 shows the corner connector 50 according to the invention with its legs 60 and recesses 70 in which the receptacles 10 can be arranged.
  • the shape of the recesses 70 is preferably adapted in its inner contour to the outer contour of the receptacle 10, whereby the receptacle 10 in the leg 60 of the Corner connector 50 can be fixed in place.
  • two recesses 20 for bolts are provided in each leg 60 of a corner connector 50.
  • any number of bolts can be provided in corresponding receptacles in each leg.
  • a single receptacle 10 can also be provided for a large number of bolts.
  • Figure 3 shows an exploded view of corner connector 50 with holder 10 and bolt 80 provided therein.
  • bolt 80 is driven through holes in a hollow profile into holder 10 or its recesses 20.
  • Figure 4 shows an exploded view of a part of a support frame according to the invention, in which two corner connectors 60 are provided in corresponding cavities 92 with inner contours preferably adapted to the outer contour of the leg 60 of the corner connector 50. This allows the corner connector to be inserted into the hollow profile 90 in a fixed position, preferably in a form-fitting manner. Bores 91 in the hollow profile 90 are preferably adapted to the distance between the recesses 20 in the respective receptacle 10.
  • the distance between the holes 91 belonging to a leg 60 of a corner connector 50 can differ slightly from the corresponding distance between the recesses 20 of the corresponding receptacle 10, i.e. the holes can be closer or further apart.
  • the polymer material is preferably spread or compressed along the connecting axis of the two holes 91 for a leg of a corner connector, whereby an increased frictional connection can be provided for the connecting fixing of the bolts in the part of the support frame.
  • the receptacles 10 can have an overall conical shape which tapers towards the interior of the support frame part. This ensures that the receptacle 10 is fixed in the leg 60 of the corner connector 70 even when the bolt 80 is driven into the receptacle 10 through the hole 91 with a high degree of force. This can counteract an unfavorable displacement of the receptacle 10 deeper into the interior of the corner connector or even out of the corner connector to the opposite side.
  • the part of a support frame or support frame formed in this way with several hollow profiles and corner connectors mounted between them has the significant advantage of a flexible connection between the corner connector and hollow profile as well as two adjacent hollow profiles. This allows variances in production to be compensated for and prevents disadvantageous deformation of the corner connector or its recesses or the hollow profiles when subjected to tension or pressure, for example along the connection axis of the corner connector and support/hollow profile.
  • the clamping force and strength of the connection can be adjusted by a defined offset of the holes 91 to the corresponding recesses 20 of the holder 10.
  • the connection of two hollow profiles via the corner connector according to the invention has the advantage that the components are at least partially decoupled from each other with regard to the individual tensile and compressive forces on the individual hollow profiles and are at least partially absorbed by the respective polymer body of the holder 10.
  • Such a concept for the simple manufacture of a support frame part, which tolerates variants in the manufacturing process and at the same time provides hollow profile elements that are decoupled from each other in terms of force, is not known from the prior art.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Description

Die vorliegende Erfindung betrifft einen Tragrahmen, insbesondere einen Teil eines Tragrahmens mit mindestens zwei auf Gehrung zugeschnittenen Hohlprofilen mit mindestens einer Innenkammer und mindestens einem in die Hohlprofile mit seinen Schenkeln eingreifenden Eckverbinder gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a support frame, in particular a part of a support frame with at least two mitred hollow profiles with at least one inner chamber and at least one corner connector engaging into the hollow profiles with its legs according to the preamble of claim 1.

Dabei kann der Eckverbinder Aufnahmen für einführbare Befestigungsmittel aufweisen, mittels welcher die Hohlprofile und der Eckverbinder verbindbar sind, wobei die Befestigungsmittel als in Bohrungen der Hohlprofile und in Aufnahmen der Schenkel des Eckverbinders eintreibbare Bolzen (80) ausgebildet sein können und die Bolzen in mindestens einer der Aufnahmen, durch die sich der Bolzen erstreckt, formschlüssig festgelegt sind.The corner connector can have receptacles for insertable fastening means, by means of which the hollow profiles and the corner connector can be connected, wherein the fastening means can be designed as bolts (80) that can be driven into bores in the hollow profiles and into receptacles in the legs of the corner connector and the bolts are positively secured in at least one of the receptacles through which the bolt extends.

Aus dem Stand der Technik ist die DE 299 03 649 U1 bekannt, bei welcher ein Tragrahmen aus Hohlprofilen mit Eckverbindern gebildet ist, welche mittels einer Bolzenverbindung verbunden sind. Dabei sind der Tragrahmen und die Eckverbinder aus Metall gefertigt. Dieser Tragrahmen hat den wesentlichen Nachteil, dass die zur Verbindung der Teile vorgesehenen Bohrungen in den Hohlprofilen und Eckverbindern perfekt aufeinander abgestimmt sein müssen, um den Bolzen ordnungsgemäß durch die beiden Teile eintreiben zu können. Dies führt jedoch unter üblichen Konstruktionsbedingungen dazu, dass nachträglich einige Anpassungen und Korrekturen an den Einzelteilen vorgenommen werden müssen, um die exakte Passform gewährleisten zu können. Insbesondere ist es erforderlich, Material an den Enden der Hohlprofile abzunehmen, um eine Passgenauigkeit bereitzustellen. Zudem ist bei der Fertigung des Tragrahmens Torsionen in der Konstruktion Rechnung zu tragen, was aus fertigungstechnischen Gründen nur durch individuelle Anpassung jedoch nicht durch vorherige Berechnung korrigiert werden kann.The state of the art is the DE 299 03 649 U1 known, in which a support frame is made of hollow profiles with corner connectors, which are connected by means of a bolt connection. The support frame and the corner connectors are made of metal. This support frame has the significant disadvantage that the The holes provided in the hollow profiles and corner connectors must be perfectly aligned in order to be able to drive the bolt properly through the two parts. However, under normal construction conditions, this means that some adjustments and corrections must be made to the individual parts afterwards in order to ensure an exact fit. In particular, it is necessary to remove material from the ends of the hollow profiles in order to ensure a precise fit. In addition, torsions in the design must be taken into account when manufacturing the supporting frame, which for manufacturing reasons can only be corrected by individual adjustment and not by prior calculation.

Eckverbinder mit eingesetzten Hülsen sind in DE2209682A1 und FR1545527A offenbart.Corner connectors with inserted sleeves are in DE2209682A1 and FR1545527A revealed.

Die vorliegende Erfindung stellt sich die Aufgabe, den Nachteilen aus den dem Stand der Technik zu begegnen und eine verlässliche Verbindung zwischen Eckverbinder und Hohlprofilen eines Tragrahmens bereitzustellen, welche die Nachteile aus dem Stand der Technik überwindet.The present invention has the object of counteracting the disadvantages of the prior art and of providing a reliable connection between corner connectors and hollow profiles of a supporting frame, which overcomes the disadvantages of the prior art.

Die Aufgabe wird nach der vorliegenden Erfindung durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.The object is achieved according to the present invention by the characterizing features of claim 1.

Diese sind, dass die Aufnahmen als separate/diskrete in die Schenkel des Eckverbinders eingesetzte Polymerhülsen ausgebildet sind, in welchen mindestens eine Ausnehmung zur formschlüssigen Aufnahme der Bolzen im Schenkel bereitgestellt ist.These are that the receptacles are designed as separate/discrete polymer sleeves inserted into the legs of the corner connector, in which at least one recess is provided for the positive reception of the bolts in the leg.

Es ist vorgesehen sein, dass die Hohlprofile und die Eckverbinder im verbindungsgemäßen Zustand mittels der Bolzen unter Vorspannung verbunden sind, indem die Bohrungen der Hohlprofile und die Aufnahmen der Eckverbinder mit einem Teilversatz zueinander angeordnet sind.It is intended that the hollow profiles and the corner connectors are connected in the correct state by means of the bolts under prestress, in that the holes of the hollow profiles and the receptacles of the corner connectors are arranged with a partial offset to one another.

Die Polymerhülsen bieten die notwendige Flexibilität und Elastizität, um einen Versatz zwischen Bohrungen der Hohlprofile und Aufnahmen an den Eckverbinder auszugleichen, wodurch nachträgliche Korrekturarbeiten an den individuellen Bestandteilen des Tragrahmen vermeidbar sind. Zudem kann ein Versatz zwischen den Bohrungen in den Hohlprofilen und den elastischen Aufnahmen zu einer Vorspannung zwischen Bolzen und den Teilen des Tragrahmens im verbindunggemäßen Zustand führen, welcher die Verbindungsfestigkeit zusätzlich erhöht.The polymer sleeves provide the necessary flexibility and elasticity to compensate for any misalignment between the holes in the hollow profiles and the receptacles on the corner connectors, thus making subsequent correction work on the individual components of the supporting frame can be avoided. In addition, an offset between the holes in the hollow profiles and the elastic mounts can lead to a prestress between the bolts and the parts of the supporting frame in the connected state, which further increases the connection strength.

Nach einer bevorzugten Weiterbildung ist es vorgesehen, dass die Polymerhülse eines Schenkels zwei oder mehr Ausnehmungen für Bolzen aufweist und/oder einstückig gebildet ist. An dem Tragrahmen kann der Abstand zwischen den Ausnehmungen in der Polymerhülse an den Abstand der entsprechenden Bohrungen im Hohlprofil angepasst sein. Die Anpassung kann einen Versatz gegenüber den Bohrungen aufweisen, welcher den Körper der Polymerhülse im verbindungsgemäßen Zustand des Tragrahmen mit Vorspannung komprimiert oder auseinanderzieht, wodurch die formschlüssige Verbindung von Hohlprofil und Eckverbinder mittels des Bolzens in der Polymerhülse durch einen Reibschluss ergänzt oder durch diesen ersetzt werden kann.According to a preferred development, the polymer sleeve of one leg has two or more recesses for bolts and/or is formed in one piece. On the support frame, the distance between the recesses in the polymer sleeve can be adapted to the distance between the corresponding holes in the hollow profile. The adaptation can have an offset relative to the holes, which compresses or pulls apart the body of the polymer sleeve with prestress in the connected state of the support frame, whereby the positive connection of the hollow profile and corner connector by means of the bolt in the polymer sleeve can be supplemented by or replaced by a frictional connection.

Die Polymerhülse kann zudem als Federelement zwischen dem Eckverbinder und dem Hohlprofil dienen und mit einer voreinstellbaren Federkonstante/Federkraft bereitgestellt sein, wodurch die Erfordernisse des Tragrahmens je nach Anwendungsbereich angepasst werden können. Die Federkonstante oder Federwirkung des erfindungsgemäßen Teils eines Tragrahmens lässt sich zum einen über die Auswahl des Polymers, also die intrinsische materialgebundene Federkonstante, als auch über eine Federspannung des Materials der Polymerhülse durch entsprechende Auswahl des Abstands der Ausnehmungen in Bezug auf den Abstand der Bohrungen im Hohlprofil einstellen. Ein besonders großer Versatz zwischen den Aufnahmen in dem Eckverbinder und den korrespondierenden Bohrungen im Hohlprofil kann das Material der Polymerhülse in besonderer Weise vorfestigen und einen Reibschluss erzeugen und/oder erhöhen. Der Versatz zwischen der (den) Bohrung(en) im Hohlprofil und der mindestens einen Ausnehmung in der Polymerhülse kann vorzugsweise 0,1 mm bis 5 mm betragen.The polymer sleeve can also serve as a spring element between the corner connector and the hollow profile and can be provided with a pre-settable spring constant/spring force, whereby the requirements of the support frame can be adapted depending on the area of application. The spring constant or spring effect of the part of a support frame according to the invention can be adjusted on the one hand by selecting the polymer, i.e. the intrinsic material-bound spring constant, and also by a spring tension of the material of the polymer sleeve by appropriately selecting the distance between the recesses in relation to the distance between the holes in the hollow profile. A particularly large offset between the receptacles in the corner connector and the corresponding holes in the hollow profile can pre-strengthen the material of the polymer sleeve in a special way and create and/or increase a frictional connection. The offset between the hole(s) in the hollow profile and the at least one recess in the polymer sleeve can preferably be 0.1 mm to 5 mm.

Für eine besonders sichere Verbindung des Eckverbinders mit einem Teil (Hohlprofil) des Tragrahmens kann die Polymerhülse formschlüssig und/oder kraftschlüssig im Schenkel festgelegt sein. Die Polymerhülse kann elastisch sein und/oder eine Verlagerung des Bolzens zum Ausgleich des Versatzes ermöglichen. Zur Verbesserung der formschlüssigen Festlegung kann die Hülse mit einer konischen Außenkontur ausgebildet sein, wobei ein Aufnahmebereich im Schenkel des Eckverbinders für die Polymerhülse in seinem Innenumfang/seiner Innenkontur in etwa dem Außenumfang/der Außenkontur der Polymerhülse entspricht, wodurch eine besonders effektive Festlegung in Richtung der sich verjüngenden Ausnehmung im Eckverbinder bereitgestellt ist.For a particularly secure connection of the corner connector to a part (hollow profile) of the support frame, the polymer sleeve can be fixed in the leg in a form-fitting and/or force-fitting manner. The polymer sleeve can be elastic and/or allow the bolt to be moved to compensate for the offset. To improve the form-fitting fixation, the sleeve can be designed with a conical outer contour, with a receiving area in the leg of the corner connector for the polymer sleeve in its inner circumference/inner contour roughly corresponding to the outer circumference/outer contour of the polymer sleeve, thereby providing a particularly effective fixation in the direction of the tapered recess in the corner connector.

Nach einer bevorzugten Weiterbildung der vorliegenden Erfindung ist es vorgesehen, dass die Polymerhülse aus Polyethylen, Polypropylen, Polyurethan oder Polyacrylnitril oder einer Mischung der vorgenannten gebildet ist. Die Wahl des Polymers kann einen direkten Einfluss auf die Federkonstante beziehungsweise die Federwirkung zwischen Eckverbinder und Hohlprofil haben.According to a preferred development of the present invention, the polymer sleeve is made of polyethylene, polypropylene, polyurethane or polyacrylonitrile or a mixture of the aforementioned. The choice of polymer can have a direct influence on the spring constant or the spring effect between the corner connector and the hollow profile.

Zweckmäßigerweise kann es vorgesehen sein, dass in der Polymerhülse zusätzlich zu den Ausnehmungen definiert vorsehbare und/oder befüllbare Freiräume beziehungsweise Aussparungen, vorzugsweise Bohrungen oder Bohrstellen, zur Definition und/oder Einstellung einer gewünschten Federkonstante bzw. Elastizität der Aufnahme beziehungsweise der Polymerhülse, insbesondere als federndes Element, bereitgestellt sind. Mittels der Freiräume beziehungsweise Bohrungen können gezielt Schwachstellen oder besonders nachgebende Bereiche in der Polymerhülse in mindestens einer Raumrichtung bereitgestellt werden, ohne dabei die Elastizität nachhaltig in einer anderen Raumrichtung zu beeinflussen. Dadurch kann beispielsweise das Eintreiben der Bolzen in die Bohrungen in den Hohlprofilen und die Aufnahmen in den Eckverbindern durch eine vereinfachte Verlagerung der Aufnahmen in der Polymerhülse in einer Raumrichtung erleichtert werden, wobei in einer anderen Raumrichtung beispielsweise orthogonal zur ersten Raumrichtung und/oder orthogonal zu einer Erstreckungsrichtung der Bolzen im betriebsgemäßen Verbindungszustand eine erhöhte Festigkeit beziehungsweise Federkonstante der Polymerhülse bereitgestellt werden kann.It can be expediently provided that, in addition to the recesses, defined and/or fillable free spaces or recesses, preferably holes or drilling points, are provided in the polymer sleeve for defining and/or setting a desired spring constant or elasticity of the receptacle or the polymer sleeve, in particular as a resilient element. By means of the free spaces or holes, weak points or particularly yielding areas can be provided in the polymer sleeve in at least one spatial direction, without thereby having a lasting effect on the elasticity in another spatial direction. This can, for example, make it easier to drive the bolts into the holes in the hollow profiles and the receptacles in the corner connectors by simplifying the displacement of the receptacles in the polymer sleeve in one spatial direction, with a increased strength or spring constant of the polymer sleeve can be provided.

Besonders bevorzugt ist die Bauhöhe des Eckverbinders der lichten Höhe der Innenkammer im Hohlprofil entsprechend.Particularly preferably, the construction height of the corner connector corresponds to the clear height of the inner chamber in the hollow profile.

Nach einer zweckmäßigen Weiterbildung der vorliegenden Erfindung ist es vorgesehen, dass für jeden Schenkel an dem Hohlprofil eine eigene Innenkammer bereitgestellt ist. Grundsätzlich können zwei benachbarte Hohlprofile über mehr als einen Eckverbinder verbunden sein. Sofern mehr als ein Eckverbinder vorgesehen ist, kann es zweckdienlich sein, das Hohlprofil mit separaten Innenkammern für jeden Eckverbinder vorzusehen. Zweckmäßigerweise ist die Innenkammer ihrer Form nach dabei auf jeden der Eckverbinder bzw. dessen Schenkel angepasst.According to an expedient development of the present invention, it is provided that a separate inner chamber is provided for each leg on the hollow profile. In principle, two adjacent hollow profiles can be connected via more than one corner connector. If more than one corner connector is provided, it can be expedient to provide the hollow profile with separate inner chambers for each corner connector. The shape of the inner chamber is expediently adapted to each of the corner connectors or their legs.

Zweckmäßigerweise kann es vorgesehen sein, dass mindestens eine Polymerhülse zum Einstellen einer Federkonstanten z.B. ihrer Aufnahme (10), austauschbar in dieser angeordnet ist. Unterschiedliche Polymerhülsen mit unterschiedlichen elastischen Eigenschaften können dadurch zur Anpassung des Eckverbinders und dessen federnden Verbindungseigenschaften vorgesehen werden.It can be expediently provided that at least one polymer sleeve for setting a spring constant, e.g. of its receptacle (10), is arranged in an exchangeable manner in the latter. Different polymer sleeves with different elastic properties can thus be provided for adapting the corner connector and its spring connection properties.

Besonders bevorzugt ist Innenkammer an die Form des Schenkels angepasst, insbesondere umgibt die Innenkammer den Schenkel formschlüssig.Particularly preferably, the inner chamber is adapted to the shape of the leg, in particular the inner chamber surrounds the leg in a form-fitting manner.

Nachfolgend wird die Erfindung weiter anhand der beigefügten Zeichnungen erläutert. In den Zeichnungen zeigen:

Figur 1
eine perspektivische Darstellung einer Aufnahme für zwei Bolzen,
Figur 2
eine perspektivische Darstellung der Aufnahme nach Figur 1 mit Eckverbinder,
Figur 3
eine perspektivische Darstellung der Aufnahme und des Eckverbinders nach den Figuren 1 und 2 mit Bolzen und
Figur 4
eine perspektivische Explosionsdarstellung eines Teils eines Tragrahmens mit Eckverbinder, Aufnahme und Bolzen.
The invention is explained further below with reference to the accompanying drawings. In the drawings:
Figure 1
a perspective view of a holder for two bolts,
Figure 2
a perspective view of the image after Figure 1 with corner connectors,
Figure 3
a perspective view of the holder and the corner connector according to the Figures 1 and 2 with bolts and
Figure 4
a perspective exploded view of part of a supporting frame with corner connector, holder and bolt.

Figur 1 zeigt eine Aufnahme 10 gemäß der vorliegenden Erfindung, welche als Polymerhülse ausgebildet sein kann. Die Aufnahme 10 weist mindestens eine Ausnehmung 20 auf, welche ausgebildet ist, einen Verbindungsbolzen zur Verbindung von Eckverbinder und Hohlprofil vorzugsweise formschlüssig aufzunehmen. Nach Figur 1 ist die Aufnahme mit mehr als einer Ausnehmung zur Aufnahme von mehr als einem Bolzen ausgebildet. Nach Figur 1 kann die Form der Aufnahme 10 als im Querschnitt knochenförmig oder als 8-förmig bezeichnet werden. Figure 1 shows a receptacle 10 according to the present invention, which can be designed as a polymer sleeve. The receptacle 10 has at least one recess 20, which is designed to receive a connecting bolt for connecting the corner connector and the hollow profile, preferably in a form-fitting manner. According to Figure 1 The holder is designed with more than one recess to accommodate more than one bolt. Figure 1 the shape of the receptacle 10 can be described as bone-shaped or 8-shaped in cross section.

Die Hülse 10 ist vorzugsweise ausgebildet, sich zumindest über die Länge des aufzunehmenden Bolzens zu erstrecken und/oder vorzugsweise vollständig in den Eckverbinder aufgenommen zu werden. Zur Einstellung einer Elastizität beziehungsweise Verformbarkeit können im Material der Aufnahme 10 Ausnehmungen 30 beziehungsweise Bohrungen 30 vorgesehen sein, welche die Federkraft beziehungsweise Federkonstante der Aufnahme zwischen den Bohrungen 30 und der Ausnehmung 20 lokal beeinflussen kann.The sleeve 10 is preferably designed to extend at least over the length of the bolt to be accommodated and/or preferably to be completely accommodated in the corner connector. To adjust elasticity or deformability, recesses 30 or bores 30 can be provided in the material of the receptacle 10, which can locally influence the spring force or spring constant of the receptacle between the bores 30 and the recess 20.

Eine Veränderung der Elastizität des Materials wird insbesondere entlang einer Achse von Ausnehmung 20 und Bohrungen 30 beeinflusst, wohingegen die Elastizität des Materials der Aufnahme in anderen Bereichen maßgeblich unbeeinflusst bleibt. Hierdurch lässt sich gezielt unterschiedliche Elastizität in unterschiedlichen Raumrichtungen quer zur Längsachse der Bolzenaufnahmen 20 bereitstellen.A change in the elasticity of the material is influenced in particular along an axis of the recess 20 and holes 30, whereas the elasticity of the material of the receptacle in other areas remains significantly unaffected. This allows different elasticities to be provided in a targeted manner in different spatial directions transverse to the longitudinal axis of the bolt receptacles 20.

Figur 2 zeigt den erfindungsgemäßen Eckverbinder 50 mit seinen Schenkeln 60 und Ausnehmungen 70, in welchen die Aufnahmen 10 angeordnet werden können. Die Form der Ausnehmungen 70 ist vorzugsweise in ihrer Innenkontur an die Außenkontur der Aufnahme 10 angepasst, wodurch die Aufnahme 10 in dem Schenkel 60 des Eckverbinders 50 ortsfest festlegbar ist. Nach der vorliegenden Ausführungsform sind in jedem Schenkel 60 eines Eckverbinder 50 zwei Ausnehmungen 20 für Bolzen vorgesehen. Grundsätzlich kann in jedem Schenkel eine beliebige Anzahl von Bolzen in entsprechenden Aufnahmen vorgesehen sein. Grundsätzlich kann auch eine einzelne Aufnahme 10 für eine Vielzahl von Bolzen bereitgestellt sein. Figure 2 shows the corner connector 50 according to the invention with its legs 60 and recesses 70 in which the receptacles 10 can be arranged. The shape of the recesses 70 is preferably adapted in its inner contour to the outer contour of the receptacle 10, whereby the receptacle 10 in the leg 60 of the Corner connector 50 can be fixed in place. According to the present embodiment, two recesses 20 for bolts are provided in each leg 60 of a corner connector 50. In principle, any number of bolts can be provided in corresponding receptacles in each leg. In principle, a single receptacle 10 can also be provided for a large number of bolts.

Figur 3 zeigt eine Explosionsdarstellung von Eckverbinder 50 mit Aufnahme 10 und darin vorsehbaren Bolzen 80. Im betriebsgemäßen Zustand wird der Bolzen 80 durch Bohrungen in einem Hohlprofil in die Aufnahme 10 beziehungsweise deren Ausnehmungen 20 eingetrieben. Figure 3 shows an exploded view of corner connector 50 with holder 10 and bolt 80 provided therein. In normal operation, bolt 80 is driven through holes in a hollow profile into holder 10 or its recesses 20.

Figur 4 zeigt eine Explosionsdarstellung eines erfindungsgemäßen Teils eines Tragrahmens, bei welchem zwei Eckverbinder 60 in entsprechenden Hohlräumen 92 mit vorzugsweise an die Außenkontur des Schenkels 60 des Eckverbinders 50 angepassten Innenkonturen bereitgestellt sind. Dadurch lässt sich der Eckverbinder ortsfest, vorzugsweise formschlüssig, in das Hohlprofil 90 einführen. Bohrungen 91 im Hohlprofil 90 sind vorzugsweise an den Abstand der Ausnehmungen 20 in der jeweiligen Aufnahme 10 angepasst. Figure 4 shows an exploded view of a part of a support frame according to the invention, in which two corner connectors 60 are provided in corresponding cavities 92 with inner contours preferably adapted to the outer contour of the leg 60 of the corner connector 50. This allows the corner connector to be inserted into the hollow profile 90 in a fixed position, preferably in a form-fitting manner. Bores 91 in the hollow profile 90 are preferably adapted to the distance between the recesses 20 in the respective receptacle 10.

Dabei kann der Abstand der Bohrungen 91, welche zu einem Schenkel 60 eines Eckverbinder 50 gehören, vom korrespondierenden Abstand der Ausnehmungen 20 der entsprechenden Aufnahme 10 geringfügig abweichen, also können die Bohrungen näher oder weiter auseinanderliegen. Beim Einführen des Bolzens 80 durch die Bohrungen 91 in die Ausnehmungen 20 wird das Polymermaterial entlang der Verbindungsachse der beiden Bohrungen 91 für einen Schenkel eines Eckverbinders vorzugsweise gespreizt oder gestaucht, wodurch ein erhöhter Reibschluss zur verbindenden Festlegung der Bolzen in dem Teil des Tragrahmens bereitgestellt werden kann.The distance between the holes 91 belonging to a leg 60 of a corner connector 50 can differ slightly from the corresponding distance between the recesses 20 of the corresponding receptacle 10, i.e. the holes can be closer or further apart. When the bolt 80 is inserted through the holes 91 into the recesses 20, the polymer material is preferably spread or compressed along the connecting axis of the two holes 91 for a leg of a corner connector, whereby an increased frictional connection can be provided for the connecting fixing of the bolts in the part of the support frame.

Wie in Figur 4 angedeutet, können die Aufnahmen 10 eine insgesamt konische Form aufweisen, welche sich zum Inneren des Tragrahmenteils hin verjüngt. Dadurch kann eine Festlegung der Aufnahme 10 in dem Schenkels 60 des Eckverbinders 70 auch dann sichergestellt werden, wenn der Bolzen 80 mit hoher Krafteinwirkung durch die Bohrung 91 in die Aufnahme 10 eingetrieben wird. Einem ungünstigen Verschieben der Aufnahme 10 tiefer in das Innere des Eckverbinders hinein oder sogar zur gegenüberliegenden Seite aus dem Eckverbinder wieder heraus kann dadurch entgegengewirkt werden.As in Figure 4 As indicated, the receptacles 10 can have an overall conical shape which tapers towards the interior of the support frame part. This ensures that the receptacle 10 is fixed in the leg 60 of the corner connector 70 even when the bolt 80 is driven into the receptacle 10 through the hole 91 with a high degree of force. This can counteract an unfavorable displacement of the receptacle 10 deeper into the interior of the corner connector or even out of the corner connector to the opposite side.

Der so gebildete Teil eines Tragrahmens oder Tragrahmen mit mehreren Hohlprofilen und dazwischen gelagerten Eckverbindern haben den wesentlichen Vorteil einer flexiblen Verbindung zwischen jeweils Eckverbinder und Hohlprofil sowie zwei benachbarten Hohlprofilen. Dadurch können zum einen Varianzen bei der Fertigung kompensiert werden, und zum anderen kann einer nachteiligen Verformung des Eckverbinders beziehungsweise dessen Ausnehmungen oder der Hohlprofile bei Zug oder Druck beispielsweise entlang der Verbindungsachse von Eckverbinder und Träger/Hohlprofil vorgebeugt werden.The part of a support frame or support frame formed in this way with several hollow profiles and corner connectors mounted between them has the significant advantage of a flexible connection between the corner connector and hollow profile as well as two adjacent hollow profiles. This allows variances in production to be compensated for and prevents disadvantageous deformation of the corner connector or its recesses or the hollow profiles when subjected to tension or pressure, for example along the connection axis of the corner connector and support/hollow profile.

Durch einen definierten Versatz der Bohrungen 91 zu den korrespondierenden Ausnehmungen 20 der Aufnahme 10 lässt sich die Spannkraft und Festigkeit der Verbindung einstellen. Die Verbindung zweier Hohlprofile über den erfindungsgemäßen Eckverbinder hat den Vorteil, dass die Bauteile bezüglich der individuellen Zug- und Druckkräfte auf den einzelnen Hohlprofilen zumindest teilweise voneinander entkoppelt sind und durch den jeweiligen Polymerkörper der Aufnahme 10 zumindest teilweise aufgenommen werden. Ein solches Konzept zur einfachen Fertigung eine Tragrahmenteils, welches Varianten im Fertigungsprozess toleriert und gleichzeitig voneinander kräftemäßig entkoppelte Hohlprofilelemente bereitstellt, ist aus dem Stand der Technik nicht bekannt.The clamping force and strength of the connection can be adjusted by a defined offset of the holes 91 to the corresponding recesses 20 of the holder 10. The connection of two hollow profiles via the corner connector according to the invention has the advantage that the components are at least partially decoupled from each other with regard to the individual tensile and compressive forces on the individual hollow profiles and are at least partially absorbed by the respective polymer body of the holder 10. Such a concept for the simple manufacture of a support frame part, which tolerates variants in the manufacturing process and at the same time provides hollow profile elements that are decoupled from each other in terms of force, is not known from the prior art.

Claims (10)

  1. Part of a support frame with at least two hollow profiles (90) cut at a miter with at least one inner chamber (92) and at least one corner connector (50) engaging into the hollow profiles (90) with its legs (60), wherein the corner connector (50) has receptacles (10) for insertable fastening means, by which the hollow profiles (90) and the corner connector (50) can be connected, wherein the fastening means are designed as bolts (80) that can be driven into holes (91) in the hollow profiles (90) and into receptacles (10) of the legs (60) of the corner connector (50), and the bolts (80) are positively fixed in at least one of the receptacles (10) through which the bolt (80) extends
    characterized in that
    the receptacles (10) are designed as separate polymer sleeves inserted into the legs (60) of the corner connector (50), in which at least one recess (20) for the positive reception of the bolts (80) is provided in the leg (60),
    that the hollow profiles and the corner connectors are connected in the connected state by means of the bolts under preload, in that the holes (91) of the hollow profiles (90) and the receptacles (10) of the corner connectors (50) are arranged with a partial offset to each other.
  2. Part of a support frame according to claim 1,
    characterized in that
    that the polymer sleeve of a leg (60) has two recesses (20) for bolts (80) and is formed in one piece.
  3. Part of a support frame according to claim 1 or 2,
    characterized in that
    the polymer sleeve is elastic and allows displacement of the bolt to compensate for the offset and/or is positively fixed in the leg (60).
  4. Part of a support frame according to any one of claims 1 to 3,
    characterized in that
    the distance of the recesses (20) in the polymer sleeve deviates, preferably by 0.1 mm - 5 mm, from the distance of the corresponding holes (91) in the hollow profile (90), i.e. is offset.
  5. Part of a support frame according to any one of claims 1 to 4,
    characterized in that
    the polymer sleeve is formed from polyethylene, polypropylene, polyurethane, polyacrylonitrile or a mixture of the aforementioned.
  6. Part of a support frame according to any one of claims 1 to 5,
    characterized in that
    in the polymer sleeve, in addition to the recesses (20), defined foreseeable and/or fillable spaces or cavities, preferably holes or drilling points, are provided to define and/or adjust a desired spring constant or elasticity of the receptacle or the polymer sleeve, particularly as a spring element.
  7. Part of a support frame according to any one of claims 1 to 6,
    characterized in that
    an outer contour of the polymer sleeve is designed conically.
  8. Part of a support frame according to any one of claims 1 to 7,
    characterized in that
    the height of the corner connector (50) corresponds to the clear height of the inner chambers (92).
  9. Part of a support frame according to any one of claims 1 to 8,
    characterized in that
    a separate inner chamber (92) is provided for each leg (60) on the hollow profile (90).
  10. Part of a support frame according to any one of claims 1 to 9,
    characterized in that
    at least one polymer sleeve for adjusting a spring constant of its receptacle (10) is arranged exchangeably in it.
EP23194134.5A 2022-08-30 2023-08-30 Part of a supporting frame with corner connector Active EP4332340B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022121874 2022-08-30

Publications (3)

Publication Number Publication Date
EP4332340A1 EP4332340A1 (en) 2024-03-06
EP4332340B1 true EP4332340B1 (en) 2025-02-12
EP4332340C0 EP4332340C0 (en) 2025-02-12

Family

ID=87889673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23194134.5A Active EP4332340B1 (en) 2022-08-30 2023-08-30 Part of a supporting frame with corner connector

Country Status (1)

Country Link
EP (1) EP4332340B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1545527A (en) * 1967-04-29 1968-11-08 Wieland Werke Ag Miter cut profile bar connection device or for end-to-end junction
DE2209682A1 (en) * 1972-03-01 1973-09-06 Wutoeschingen Aluminium CONNECTING ELEMENT FOR CONNECTING MITER-CUT HOLLOW PROFILE STRIPS
DE29903649U1 (en) 1999-03-01 1999-05-20 Schüco International KG, 33609 Bielefeld Corner connectors and associated miter-cut hollow profiles of a frame

Also Published As

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EP4332340C0 (en) 2025-02-12
EP4332340A1 (en) 2024-03-06

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