EP3263788B1 - Connection of two timber beams - Google Patents

Connection of two timber beams Download PDF

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Publication number
EP3263788B1
EP3263788B1 EP17001082.1A EP17001082A EP3263788B1 EP 3263788 B1 EP3263788 B1 EP 3263788B1 EP 17001082 A EP17001082 A EP 17001082A EP 3263788 B1 EP3263788 B1 EP 3263788B1
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EP
European Patent Office
Prior art keywords
timber
timber beam
terminating
screws
screw
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EP17001082.1A
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German (de)
French (fr)
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EP3263788A1 (en
Inventor
Stephan Schindlauer
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Sihga GmbH
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Sihga GmbH
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2644—Brackets, gussets or joining plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2652—Details of nailing, screwing, or bolting

Definitions

  • the invention relates to a connection between two wooden beams.
  • the US4280686A shows a fitting made of sheet metal for connecting two wooden beams, the first wooden beam being aligned with an end face of a lateral surface side of the second wooden beam and the end face and lateral surface side being aligned parallel to one another.
  • the essentially flat fitting is located between the mutually facing surfaces of the wooden beams and protrudes at two opposite edges over the end face of the first wooden beam.
  • the fitting is connected to the first wooden beam by nails on the surface area lying against the end face of the first beam.
  • the fitting is connected to the second wooden beam by nails in the areas protruding from the end face. The nails are aligned normal to the plane of the flat fitting.
  • connection is not very rigid and not very rigid;
  • a typical application in which this does not interfere is the connection of posts and longitudinal beams of fences, with a longitudinal beam ending with its front side on a lateral surface side of a post.
  • the fitting is provided with a fold in the area protruding under the end face of the longitudinal beam, on which the longitudinal beam rests with its end region from above.
  • the US 2013/0259563 A1 shows a fitting consisting of several individual sheets and a few screws for attaching five rods with the same square cross-sectional area to one another.
  • Four of the rods each end with an end face at the same height as one another on a lateral surface side of the fifth, central, continuous rod.
  • the individual sheets of the connection fitting each run between a Lateral surface side of the central rod and a front side of a rod protruding thereon, ie also next to said front surface on lateral surface sides of rods.
  • the metal sheets of the connecting fitting are connected to a metal sheet located on the other side of the bar by means of screws, which each run through a rod.
  • connection is reasonably rigid. However, it has a high production cost and also looks very technical.
  • the principle can only be applied to the connection of only two beams if the two beams are of the same width in the direction normal to the common plane.
  • the WO 02066754 A1 shows a fitting for the T-connection of beams.
  • the fitting is essentially a U-shaped sheet metal part which, when installed as intended, rests flat with its base surface on the end face of the beam ending at the T-joint and rests with its legs on the lateral surfaces of this beam.
  • the base of the fitting is widened laterally beyond the legs by two straps. When assembled, the tabs are connected to the continuous beam and the legs are connected to the ending beam by screws or nails. Disadvantages are that the fitting is visually very present and also offers only relatively low rigidity and resistance to bending loads.
  • the object on which the invention is based is to create a T-connection for two wooden beams, with one end face of the first "ending beam” facing a lateral surface side of the second "continuous beam” aligned parallel to this end face.
  • the connection should be easy to assemble, in the assembled state fittings should be largely concealed, forces should be good both normal and parallel to the connecting surfaces of the beams be transferrable.
  • the connection should also transmit torques about axes that are normal to the plane spanned by the beams so well and non-destructively between the beams that separate diagonal braces between the beams can be omitted.
  • a connection with the features of claim 1 is provided for solving the problem.
  • an ending beam 1 made of wood and a continuous beam 2 made of wood are connected to one another by a fitting 3 to form a T-arrangement.
  • the fitting 3 consists of a plate 4 and several screws 5, 6, 7.
  • the plate 4 lies with its one main surface flat against that side surface of the continuous beam 2 which faces the ending beam 1 .
  • the second main surface of the plate 4 lies flat against the end face of the ending beam 1 facing the continuous beam 2 .
  • the plate 4 is first fixed to the end face of the ending beam 1 .
  • two relatively short, ideally self-drilling and thread-cutting screws 5 are screwed through screw through-holes 8 ( 2 ) in the plate 4 screwed into the beam 2.
  • the orientation of the screws 5 is parallel to the longitudinal direction of the ending beam 1 and thus normal to the plane of the plate 4.
  • the screw through bores 8 are each formed as a stepped bore aligned normal to the plane of the plate 4, a longitudinal area with a constant larger diameter being followed by a funnel-like constriction area and then a longitudinal area with a constant smaller diameter.
  • the area with the larger diameter is so wide and deep that the head of the screw 5 that runs through it can be accommodated entirely in it and thus no longer protrudes beyond the plate 4 .
  • the plate 4 is connected to the ending beam 1 with statically relevant screws 6 .
  • the screws 6 are preferably self-drilling and thread-cutting. she run in turn through, designed as a stepped bore screw through holes 9 in the plate 4 through, in each of which the head of the screw 6 is completely accommodated.
  • the screw passage bores 9 are not aligned normal to the plane of the plate 4 but are inclined at an acute angle, typically 30° from the normal.
  • the plate 4 is sufficiently thick (eg 12mm) and the smaller diameter of the screw through-holes 9 is sufficiently narrow to cause the screw through-holes 9 to act as guides which essentially predetermine the direction in which the screws 6 are screwed.
  • the screw passage bores 9 through the plate 4 lead to one of the two longitudinal edge regions of the end face of the ending beam 1, which are aligned normal to the plane spanned by the two beams 1, 2.
  • the screw passage bores 9 and thus also the screws 6 are aligned in such a way that their normal projection onto the plane spanned by the beams 1, 2 together with the longitudinal direction of the ending beam 1 assumes an acute angle of typically 30°, with the angle along the screws 6 increasing with increasing Distance from the end face of the beam 1 also increases the distance to that lateral surface side of the ending beam 1, in the vicinity of which the head of the respective screw 6 is located.
  • the screws 6 are dimensioned so long that when they are screwed in, the screw tip and the screw head are on different sides of that longitudinal center plane of the ending beam 1 which is normal to the plane spanned by the two beams 1, 2.
  • the two rows of screw through-holes 9 on the plate 4 are offset from one another by half a grid dimension of the hole spacing ( 2 ).
  • the continuous beam 2 is placed with one lateral surface side in the intended relative position relative to it on the main surface of the plate 4 that is still exposed after step 2, and by means of screws 7, which run through screw through-holes 10 in the plate 4 and are preferably self-drilling and self-tapping , tightened by the screws 7 penetrating through said lateral surface into the continuous beam 2 and forming a threaded connection with it.
  • the screws 7 can be aligned normal to the plane of the plate 4 and thus to the longitudinal direction of the continuous beam 2. Ideally, the screws 7 are so long that they penetrate that longitudinal center plane of the continuous beam 2 which is parallel to that lateral surface side of the beam 2 on which the screws 7 penetrate into it.
  • the two rows of screw passage holes 9 for the screws 7 leading into the continuous beam 1 are each located on one of the two edge regions 11 of the plate 4, which protrude beyond the end face of the ending beam 1 on those side edges of the end face which lead to the through the beams 1, 2 are normal to the plane spanned together and in the vicinity of which the screw through-holes 8 for the screws 6 also open into the face of the ending beam 1.
  • the plate 4 When torque is transmitted between the two beams 1, 2 in the in 1 alignment symbolized by a curved arrow, there is a bending load on the plate 4, which is strongest in the vicinity of the two rows of screw through-holes 9.
  • the plate 4 In order to form the connection between the two beams 1, 2 with maximum rigidity, the plate 4 must be dimensioned in such a way that it can only deform slightly elastically at most marginally under this bending load.
  • a framework is formed with the aid of the beams 1, 2, which is a roof of a simple building such as typically of a carport or a shed.
  • the ending beam 1 is a wooden column and the continuous beam 2 is part of the roof truss.
  • a typical mating design of the plate 4 may be of aluminium, 12mm thick and the spacing between two adjacent rows of screw through holes 8, 9 is 3cm.
  • connection according to the invention makes diagonal struts between the beams 1, 2 to be connected unnecessary is particularly valuable in the case of use as a carport, since this eliminates the disruptive restriction of the passage cross-section. In the case of application to other buildings, it can also be of great value because it removes a restriction on the positioning of windows or gates.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Description

Die Erfindung betrifft eine Verbindung zweier Holzbalken.The invention relates to a connection between two wooden beams.

Die US 4280686 A zeigt einen aus Blech gebildeten Beschlag für das Verbinden zweier Holzbalken wobei der erste Holzbalken mit einer Stirnfläche einer Mantelflächenseite des zweiten Holzbalkens zugewandt ausgerichtet ist und Stirnfläche und Mantelflächenseite zueinander parallel ausgerichtet sind. Der im Wesentlichen flächig ausgebildete Beschlag befindet sich zwischen den einander zugewandten Flächen der Holzbalken und steht an zwei gegenüberliegenden Rändern über die Stirnfläche des ersten Holzbalkens vor. Am an der Stirnfläche des ersten Balkens anliegenden Flächenbereich ist der Beschlag durch Nägel mit dem ersten Holzbalken verbunden. An den von der Stirnfläche vorstehenden Bereichen ist der Beschlag durch Nägel mit dem zweiten Holzbalken verbunden. Die Nägel sind normal zur Ebene des flächigen Beschlages ausgerichtet.the US4280686A shows a fitting made of sheet metal for connecting two wooden beams, the first wooden beam being aligned with an end face of a lateral surface side of the second wooden beam and the end face and lateral surface side being aligned parallel to one another. The essentially flat fitting is located between the mutually facing surfaces of the wooden beams and protrudes at two opposite edges over the end face of the first wooden beam. The fitting is connected to the first wooden beam by nails on the surface area lying against the end face of the first beam. The fitting is connected to the second wooden beam by nails in the areas protruding from the end face. The nails are aligned normal to the plane of the flat fitting.

Die Verbindung ist wenig biegesteif und wenig biegefest; ein typischer Anwendungsfall bei dem das nicht stört ist die Verbindung von Pfählen und Längsbalken von Zäunen, wobei ein Längsbalken mit seiner Stirnseite an einer Mantelflächenseite eines Pfahls endet. Um die Montage zu erleichtern und um die Festigkeit gegen Abwärtsgleiten des Längsbalkens zu erhöhen ist der Beschlag an dem unter der Stirnseite des Längsbalkens vorragenden Bereich mit einer Auffaltung versehen, an welcher der Längsbalken mit seinem Endbereich von oben her aufliegt.The connection is not very rigid and not very rigid; A typical application in which this does not interfere is the connection of posts and longitudinal beams of fences, with a longitudinal beam ending with its front side on a lateral surface side of a post. In order to facilitate assembly and to increase the strength against the longitudinal beam sliding downwards, the fitting is provided with a fold in the area protruding under the end face of the longitudinal beam, on which the longitudinal beam rests with its end region from above.

Die US 2013/0259563 A1 zeigt einen aus mehreren Einzelblechen und einigen Schrauben bestehenden Beschlag für das befestigen von fünf Stäben mit gleicher quadratischer Querschnittsfläche aneinander. Vier der Stäbe enden jeweils mit einer Stirnseite auf zueinander gleicher Höhe an jeweils einer Mantelflächenseite des fünften zentralen, durchgehenden Stabes. Die einzelnen Bleche des Verbindungsbeschlages verlaufen jeweils sowohl zwischen einer Mantelflächenseite des mittleren Stabes und einer Stirnseite eines daran heranragenden Stabes, also auch neben besagter Stirnfläche an Mantelflächenseiten von Stäben. An den über die Stirnfläche vorstehenden Bereichen sind die Bleche des Verbindungsbeschlages durch Schrauben, welche durch jeweils einen Stab hindurch verlaufen, mit einem jeweils an der anderen Seite des Stabes befindlichen Blech verbunden.the US 2013/0259563 A1 shows a fitting consisting of several individual sheets and a few screws for attaching five rods with the same square cross-sectional area to one another. Four of the rods each end with an end face at the same height as one another on a lateral surface side of the fifth, central, continuous rod. The individual sheets of the connection fitting each run between a Lateral surface side of the central rod and a front side of a rod protruding thereon, ie also next to said front surface on lateral surface sides of rods. At the areas protruding beyond the end face, the metal sheets of the connecting fitting are connected to a metal sheet located on the other side of the bar by means of screws, which each run through a rod.

Die Verbindung ist einigermaßen biegesteif. Sie hat aber hohen Herstellungsaufwand und sieht auch sehr technisch aus. Das Prinzip lässt sich nur dann auf die Verbindung von nur zwei Balken anwenden, wenn die beiden Balken in der zur gemeinsam aufgespannten Ebene normalen Richtung gleich breit sind.The connection is reasonably rigid. However, it has a high production cost and also looks very technical. The principle can only be applied to the connection of only two beams if the two beams are of the same width in the direction normal to the common plane.

Die WO 02066754 A1 zeigt eine Beschlag für die T-Verbindung von Balken. Der Beschlag ist im Wesentlichen ein U-förmig gebogener Blechteil, welcher bei bestimmungsgemäßer Montage mit seiner Basisfläche an der Stirnseite des an der T-Verbindung endenden Trägers flächig anliegt und mit seinen Schenkeln an Mantelflächen dieses Trägers anliegt. Die Grundfläche des Beschlages ist durch zwei Laschen seitlich über die Schenkel hinaus verbreitert. In montiertem Zustand sind die Laschen mit dem durchgehenden Balken und die Schenkel mit dem endenden Balken durch Schrauben oder Nägel verbunden. Nachteile sind, dass der Beschlag optisch sehr präsent ist und zudem nur relativ geringe Steifigkeit und Festigkeit gegen Biegebelastung bietet.the WO 02066754 A1 shows a fitting for the T-connection of beams. The fitting is essentially a U-shaped sheet metal part which, when installed as intended, rests flat with its base surface on the end face of the beam ending at the T-joint and rests with its legs on the lateral surfaces of this beam. The base of the fitting is widened laterally beyond the legs by two straps. When assembled, the tabs are connected to the continuous beam and the legs are connected to the ending beam by screws or nails. Disadvantages are that the fitting is visually very present and also offers only relatively low rigidity and resistance to bending loads.

Die der Erfindung zu Grunde liegende Aufgabe besteht darin eine T-Verbindung für zwei aus Holz bestehende Balken zu schaffen, wobei also eine Stirnfläche des ersten "endenden Balkens" einer zu dieser Stirnfläche parallel ausgerichteten Mantelflächenseite des zweiten "durchgehenden Balkens" zugewandt liegt. Die Verbindung soll einfach zu montieren sein, in montiertem Zustand sollen Beschlagteile weitestgehend verdeckt sein, Kräfte sollen sowohl normal als auch parallel zu den Verbindungsflächen der Balken gut übertragbar sein. Insbesondere soll die Verbindung auch Drehmomente um Achsen die zu der durch die Balken aufgespannten Ebene normal stehen, so gut und zerstörungsfrei zwischen den Balken übertragen, dass separate Diagonalverstrebungen zwischen den Balken weggelassen werden können.The object on which the invention is based is to create a T-connection for two wooden beams, with one end face of the first "ending beam" facing a lateral surface side of the second "continuous beam" aligned parallel to this end face. The connection should be easy to assemble, in the assembled state fittings should be largely concealed, forces should be good both normal and parallel to the connecting surfaces of the beams be transferrable. In particular, the connection should also transmit torques about axes that are normal to the plane spanned by the beams so well and non-destructively between the beams that separate diagonal braces between the beams can be omitted.

Für das Lösen der Aufgabe ist eine Verbindung mit den Merkmalen des Anspruchs 1 vorgesehen.A connection with the features of claim 1 is provided for solving the problem.

Die erfindungsgemäße Verbindung wird an Hand von Zeichnungen zu einer beispielhaften Ausführung veranschaulicht:

  • Fig. 1: zeigt eine Prinzipskizze der Verbindung wobei aus Anschaulichkeitsgründen die Balken und die Platte als durchsichtig symbolisiert sind. Die Blickrichtung ist normal zu jener Ebene die durch die zu verbindenden Balken aufgespannt wird. Ein gekrümmter Doppelpfeil symbolisiert die Ausrichtung von Drehmomenten auf deren Übertragung zwischen den Balken hin die Verbindung ausgelegt ist.
  • Fig. 2: zeigt die Platte von Fig. 1 für sich allein mit Blickrichtung normal auf jene Fläche die bei montiertem Beschlag an dem durchgehenden Balken anliegt.
The connection according to the invention is illustrated using drawings for an exemplary embodiment:
  • 1 : shows a principle sketch of the connection, with the beams and the plate symbolized as transparent for reasons of clarity. The viewing direction is normal to the plane that is spanned by the beams to be connected. A curved double arrow symbolizes the orientation of torques for which the connection is designed to be transmitted between the beams.
  • 2 : shows the disk from 1 on its own with a normal view of the surface that is in contact with the continuous beam when the fitting is installed.

Gemäß Fig. 1 sind ein endender Balken 1 aus Holz und ein durchgehender Balken 2 aus Holz durch einen Beschlag 3 zu einer T-Anordnung miteinander verbunden. Der Beschlag 3 besteht dabei aus einer Platte 4 und mehreren Schrauben 5, 6, 7.According to 1 an ending beam 1 made of wood and a continuous beam 2 made of wood are connected to one another by a fitting 3 to form a T-arrangement. The fitting 3 consists of a plate 4 and several screws 5, 6, 7.

Die Platte 4 liegt mit ihrer einen Hauptfläche flächig an jener Seitenfläche des durchgehenden Balkens 2 an, welche dem endenden Balken 1 zugewandt liegt. Die zweite Hauptfläche der Platte 4 liegt flächig an der dem durchgehenden Balken 2 zugewandten Stirnfläche des endenden Balkens 1 an.The plate 4 lies with its one main surface flat against that side surface of the continuous beam 2 which faces the ending beam 1 . The second main surface of the plate 4 lies flat against the end face of the ending beam 1 facing the continuous beam 2 .

Beim Montagevorgang wird die Platte 4 erst an der Stirnfläche des endenden Balkens 1 fixiert. Dazu werden, bei in passender Position an der Stirnfläche anliegender Platte 4, zwei relativ kurze, idealerweise selbstbohrende und gewindeschneidende Schrauben 5, durch Schraubendurchgangsbohrungen 8 (Fig. 2) in der Platte 4 hindurch in den Balken 2 hineingeschraubt. Die Ausrichtung der Schrauben 5 ist parallel zur Längsrichtung des endenden Balkens 1 und damit normal zur Ebene der Platte 4.During the assembly process, the plate 4 is first fixed to the end face of the ending beam 1 . For this purpose, with the plate 4 lying in the appropriate position on the end face, two relatively short, ideally self-drilling and thread-cutting screws 5 are screwed through screw through-holes 8 ( 2 ) in the plate 4 screwed into the beam 2. The orientation of the screws 5 is parallel to the longitudinal direction of the ending beam 1 and thus normal to the plane of the plate 4.

Die Schraubendurchgangsbohrungen 8 sind jeweils als normal zur Ebene der Platte 4 ausgerichtete Stufenbohrung ausgebildet, wobei auf einen Längsbereich mit konstantem größerem Durchmesser ein trichterartiger Verengungsbereich und dann ein Längsbereich mit konstantem kleinerem Durchmesser folgt. Der Bereich mit größerem Durchmesser ist so breit und tief, dass der Kopf der jeweils durchgehenden Schraube 5 ganz darin Platz findet und damit nicht mehr über die Platte 4 vorsteht.The screw through bores 8 are each formed as a stepped bore aligned normal to the plane of the plate 4, a longitudinal area with a constant larger diameter being followed by a funnel-like constriction area and then a longitudinal area with a constant smaller diameter. The area with the larger diameter is so wide and deep that the head of the screw 5 that runs through it can be accommodated entirely in it and thus no longer protrudes beyond the plate 4 .

Im zweiten Schritt wird die Platte 4 mit statisch relevanten Schrauben 6 mit dem endenden Balken 1 verbunden. Die Schrauben 6 sind bevorzugt wiederum selbstbohrend und gewindeschneidend. Sie verlaufen wiederum durch, als Stufenbohrung ausgebildete Schraubendurchgangsbohrungen 9 in der Platte 4 hindurch, in denen jeweils der Kopf der Schraube 6 vollständig Platz findet. Die Schraubendurchgangsbohrungen 9 sind allerdings nicht normal zur Ebene der Platte 4 ausgerichtet sondern um einen spitzen Winkel, typischerweise 30° aus der Normalen geneigt. Die Platte 4 ist ausreichend dick (z.B. 12 mm) und der kleinere Durchmesser der Schraubendurchgangsbohrungen 9 ist ausreichend eng, um zu bewirken, dass die Schraubendurchgangsbohrungen 9 als Führungen wirken, welche die Richtung in welche die Schrauben 6 eingeschraubt werden im Wesentlichen vorbestimmen.In the second step, the plate 4 is connected to the ending beam 1 with statically relevant screws 6 . Again, the screws 6 are preferably self-drilling and thread-cutting. she run in turn through, designed as a stepped bore screw through holes 9 in the plate 4 through, in each of which the head of the screw 6 is completely accommodated. However, the screw passage bores 9 are not aligned normal to the plane of the plate 4 but are inclined at an acute angle, typically 30° from the normal. The plate 4 is sufficiently thick (eg 12mm) and the smaller diameter of the screw through-holes 9 is sufficiently narrow to cause the screw through-holes 9 to act as guides which essentially predetermine the direction in which the screws 6 are screwed.

Die Schraubendurchgangsbohrungen 9 durch die Platte 4 führen an jeweils einen der beiden länglichen Randbereiche der Stirnfläche des endenden Balkens 1, welche zu der durch die beiden Balken 1, 2 aufgespannten Ebene normal ausgerichtet sind. Die Schraubendurchgangsbohrungen 9 und damit auch die Schrauben 6 sind so ausgerichtet, dass ihre Normalprojektion auf die durch die Balken 1, 2 gemeinsam aufgespannte Ebene mit der Längsrichtung des endenden Balkens 1 einen spitzen Winkel von typischerweise 30° einnimmt, wobei entlang der Schrauben 6 mit steigender Entfernung von der Stirnfläche des Balkens 1 auch die Entfernung zu jener Mantelflächenseite des endenden Balkens 1 hin zunimmt, in deren Nahbereich sich der Kopf der jeweiligen Schraube 6 befindet.The screw passage bores 9 through the plate 4 lead to one of the two longitudinal edge regions of the end face of the ending beam 1, which are aligned normal to the plane spanned by the two beams 1, 2. The screw passage bores 9 and thus also the screws 6 are aligned in such a way that their normal projection onto the plane spanned by the beams 1, 2 together with the longitudinal direction of the ending beam 1 assumes an acute angle of typically 30°, with the angle along the screws 6 increasing with increasing Distance from the end face of the beam 1 also increases the distance to that lateral surface side of the ending beam 1, in the vicinity of which the head of the respective screw 6 is located.

Idealerweise sind die Schrauben 6 so lang bemessen, dass sich in eingeschraubtem Zustand die Schraubenspitze und der Schraubenkopf an unterschiedlichen Seiten jener Längsmittelebene des endenden Balkens 1 befinden, welche zu der auf die durch die beiden Balken 1, 2 aufgespannten Ebene normal steht. Damit zwei von gegenüberliegenden Randbereichen der Stirnseite des endenden Balkens 1 her eingeschraubte Schrauben 6 nicht miteinander kollidieren, sind die beiden Reihen von Schraubendurchgangsbohrungen 9 an der Platte 4 um ein halbes Rastermaß der Bohrungsabstände gegeneinander verschoben (Fig. 2).Ideally, the screws 6 are dimensioned so long that when they are screwed in, the screw tip and the screw head are on different sides of that longitudinal center plane of the ending beam 1 which is normal to the plane spanned by the two beams 1, 2. To ensure that two screws 6 screwed in from opposite edge regions of the end face of the ending beam 1 do not collide with one another, the two rows of screw through-holes 9 on the plate 4 are offset from one another by half a grid dimension of the hole spacing ( 2 ).

Im dritten Arbeitsschritt wird der durchgehende Balken 2 mit einer Mantelflächenseite in bestimmungsgemäßer Relativposition zu dieser auf die nach Schritt 2 noch freiliegende Hauptfläche der Platte 4 aufgelegt und mittels Schrauben 7, welche durch Schraubendurchgangsbohrungen 10 in der Platte 4 hindurch verlaufen und bevorzugt selbstbohrend und selbstschneidend ausgebildet sind, festgeschraubt, indem die Schrauben 7 durch besagte Mantelfläche in den durchgehenden Balken 2 eindringen und mit diesem eine Gewindeverbindung bilden. Die Schrauben 7 können normal zur Ebene der Platte 4 und damit zur Längsrichtung des durchgehenden Balkens 2 ausgerichtet sein. Idealerweise sind die Schrauben 7 so lang, dass sie jene Längsmittelebene des durchgehenden Balkens 2 durchdringen, welche zu jener Mantelflächenseite des Balken 2, an welcher die Schrauben 7 in diesen eindringen, parallel liegt.In the third work step, the continuous beam 2 is placed with one lateral surface side in the intended relative position relative to it on the main surface of the plate 4 that is still exposed after step 2, and by means of screws 7, which run through screw through-holes 10 in the plate 4 and are preferably self-drilling and self-tapping , tightened by the screws 7 penetrating through said lateral surface into the continuous beam 2 and forming a threaded connection with it. The screws 7 can be aligned normal to the plane of the plate 4 and thus to the longitudinal direction of the continuous beam 2. Ideally, the screws 7 are so long that they penetrate that longitudinal center plane of the continuous beam 2 which is parallel to that lateral surface side of the beam 2 on which the screws 7 penetrate into it.

Die beiden Reihen von Schraubendurchgangsbohrungen 9 für die in den durchgehenden Balken 1 führenden Schrauben 7, befinden sich jeweils an einem der beiden Randbereiche 11 der Platte 4, welche über die Stirnfläche des endenden Balkens 1 an jeweils jenen Seitenrändern der Stirnfläche vorstehen, die zu der durch die Balken 1, 2 gemeinsam aufgespannten Ebene normal liegen und in deren Nahbereich auch die Schraubendurchgangsbohrungen 8 für die Schrauben 6 in die Stirnfläche des endenden Balkens 1 münden.The two rows of screw passage holes 9 for the screws 7 leading into the continuous beam 1 are each located on one of the two edge regions 11 of the plate 4, which protrude beyond the end face of the ending beam 1 on those side edges of the end face which lead to the through the beams 1, 2 are normal to the plane spanned together and in the vicinity of which the screw through-holes 8 for the screws 6 also open into the face of the ending beam 1.

Bei der Übertragung von Drehmomenten zwischen den beiden Balken 1, 2 in der in Fig. 1 durch einen gekrümmten Pfeil symbolisieren Ausrichtung kommt es zu Biegebelastung der Platte 4, welche im Nahebereich der beiden Reihen von Schraubendurchgangsbohrungen 9 am stärksten ist. Um die Verbindung zwischen den beiden Balken 1, 2 maximal biegesteif auszubilden, muss die Platte 4 so bemessen sein, dass sie sich bei dieser Biegebelastung nur maximal marginal etwas elastisch verformen kann.When torque is transmitted between the two beams 1, 2 in the in 1 alignment symbolized by a curved arrow, there is a bending load on the plate 4, which is strongest in the vicinity of the two rows of screw through-holes 9. In order to form the connection between the two beams 1, 2 with maximum rigidity, the plate 4 must be dimensioned in such a way that it can only deform slightly elastically at most marginally under this bending load.

Bei einer sehr typischen und vorteilhaften Anwendung der erfindungsgemäßen Verbindung wird mit Hilfe der Balken 1, 2 ein Gerüst gebildet, welches ein Dach eines einfachen Gebäudes wie typischerweise eines Carports oder eines Schuppens trägt. Dabei ist der endende Balken 1 eine Säule aus Holz und der durchgehende Balken 2 Teil des Dachstuhls. Bei einer typischen dazu passenden Auslegung der Platte 4 kann diese aus Aluminium bestehen, 12 mm stark sein und der Abstand zwischen zwei benachbarten Reihen von Schraubendurchgangsbohrungen 8, 9 beträgt 3 cm.In a very typical and advantageous application of the connection according to the invention, a framework is formed with the aid of the beams 1, 2, which is a roof of a simple building such as typically of a carport or a shed. The ending beam 1 is a wooden column and the continuous beam 2 is part of the roof truss. A typical mating design of the plate 4 may be of aluminium, 12mm thick and the spacing between two adjacent rows of screw through holes 8, 9 is 3cm.

Dass sich durch die erfindungsgemäße Verbindung Diagonalstreben zwischen den zu verbindenden Balken 1, 2 erübrigen ist im Fall der Anwendung als Carports besonders wertvoll, da damit eine störende Einschränkung des Durchfahrtsquerschnittes wegfällt. Im Fall der Anwendung an anderen Gebäuden kann es ebenfalls sehr wertvoll sein, weil damit eine Einschränkung bezüglich des Positionierens von Fenstern oder Toren wegfällt.The fact that the connection according to the invention makes diagonal struts between the beams 1, 2 to be connected unnecessary is particularly valuable in the case of use as a carport, since this eliminates the disruptive restriction of the passage cross-section. In the case of application to other buildings, it can also be of great value because it removes a restriction on the positioning of windows or gates.

Claims (4)

  1. Connection between a terminating timber beam (1) made of wood and a continuous timber beam (2) made of wood by means of a fitting (3) which comprises a planar sheet (4) and a plurality of screws (5, 6, 7), the front face of the terminating timber beam (1) abutting a main surface of the sheet (4) in a laminar manner and an outer surface side of the continuous timber beam (2) abutting a second main surface of the sheet (4) in a laminar manner, the screws (5, 6, 7) extending into the timber beams (1, 2) through screw through-holes (8, 9, 10) in the sheet (4) and are in thread engagement with said timber beams, edge regions (11) of the sheet (4) projecting over the front face of the terminating timber beam (1) in the direction that runs in parallel with the plane jointly spanned by the two timber beams (1, 2) and said edge regions (11) comprising the screw through-holes (10) for the screws (7) that extend into the continuous timber beam (2),
    characterised in that
    the screws (6) which extend into the terminating timber beam (1) enclose along with the longitudinal direction of the terminating timber beam (1), an acute angle and penetrate the front face of the terminating timber beam (1) at the edge region of the outer surface sides of said timber beam (1) that are oriented normally with regards to the plane spanned by the two timber beams, the normal projection of one of the screws (6) that extend into the terminating timber beam (1) enclosing, along with the longitudinal direction of the terminating timber beam (1), an acute angle of less than 45° onto the plane jointly spanned by the timber beams (1, 2), the distance from the outer surface side of the timber beam (1), in the proximity of which side the head of the screw (6) is located, increasing along the screw (6) with the increasing distance from the front face of the timber beam (1) .
  2. Connection according to claim 1, characterised in that the axes of the screw through-holes (9) through which screws (6) that extend into the terminating timber beam (1) extend enclose, along with the normals, an acute angle onto the plane of the sheet (4), and in that the screw through-holes (9) are a longitudinal guide for the screws (6).
  3. Connection according to claim 1 or 2, characterised in that, in addition to the screws (6) that extend into the terminating timber beam (1) at an acute angle to the longitudinal direction of said timber beam, at least one screw (5) extends into the terminating timber beam (1) through a screw through-hole (8) in the sheet (4) in parallel with the longitudinal direction of said timber beam.
  4. Connection according to one of claims 1 to 3, characterised in that the terminating timber beam (1) is a column of a building which the continuous timber beam (2) abuts from above.
EP17001082.1A 2016-06-30 2017-06-26 Connection of two timber beams Active EP3263788B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATGM157/2016U AT15567U1 (en) 2016-06-30 2016-06-30 Connection of two wooden beams

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EP3263788A1 EP3263788A1 (en) 2018-01-03
EP3263788B1 true EP3263788B1 (en) 2022-04-27

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AT (1) AT15567U1 (en)
PL (1) PL3263788T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109853738A (en) * 2019-01-25 2019-06-07 彭增鑫 A kind of connection method of wood component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280686A (en) * 1979-10-25 1981-07-28 Wack David T Rail end mounting bracket

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29610381U1 (en) * 1996-06-13 1996-09-05 Bulldog-Simpson GmbH, 28857 Syke Connector for the frontal connection of a beam to a component
AT512288B8 (en) * 2011-12-13 2013-11-15 Wiehag Holding Gmbh DEVICE AND METHOD FOR CONNECTING COMPONENTS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280686A (en) * 1979-10-25 1981-07-28 Wack David T Rail end mounting bracket

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AT15567U1 (en) 2018-01-15
PL3263788T3 (en) 2022-09-12
EP3263788A1 (en) 2018-01-03

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