EP2369074A1 - Device for creating a node connection - Google Patents

Abstract

The device comprises contact surfaces that face the wooden sticks (3) at an outer side. A node element is formed by a connection element (5) which is screwed by running in the wooden sticks along the longitudinal axis. The connection element is penetrated from inside to outside through a self-supporting base (4) at a rear side that is turned away from a front side of the wooden stick or a contact surface (16).

Description

The invention relates to a device for forming a node connection of a plurality of arranged at an acute angle, preferably to an axis of symmetry wooden rods of a space framework, which are bolted to at least one end-side end portion with a node connection forming node element.

So far, extensions or other connections in the brain resp. Endholzbereich conceivable only by very elaborate solutions using specially made parts, as a major problem in timber construction is to attach end-side connections or fittings in Holzfaserdchtung that withstands a prescribed standard of appropriate tensile and compressive force, without causing a splitting of the wood or a tearing out of a screw in the fiber direction can occur.

Blunt extensions and connections in the end wood area resp. In the fiber direction of wood rods of any cross-sectional dimension, as they occur, for example, in space frameworks, could previously be performed only with great effort. Therefore, node connections of wooden bars for trusses, especially for space frameworks, are known.

The EP 0 159 452 B1 provides a node connection for trusses, in which at the ends of the wooden rods each have a holding member for threaded bolts or screws are fastened, which are bolted to the nodes. For screwing the retaining member at the front end of the wooden bar a sleeve-like metal dowel is inserted into the longitudinally divided wooden rod, which is glued to the two parts of the wooden rod. The holding member is screwed with a screw with the inserted between the glued parts of the wooden rod metal dowels.

The disadvantage of this junction connection is that it is very costly and labor intensive due to the complex installation of the metal dowel in the longitudinally divided wooden rods and the holding member and other items.

Another leading to junction connections of timber rods for trusses, especially space framework design describes the DE 30 26 689 A1 , A holding member, which is screwed on one side with a node piece, is fastened on the opposite side in a front end of the wooden rod. For this purpose, one-piece profile parts are provided which have axial recesses in the attachment portion of the holding member, which are glued into the front end of the wooden rod.

The weak point of this design is the poor suitability for the transmission of tensile forces and the complex shape of the holding members, which requires a complex production. The fact that for the different Holzstabquerschitte each other, the wooden stick cross-section corresponding holding member is used, a large variety of variants and correspondingly high production costs arise.

It is an object of the present invention to provide a device of the type described above To create a type that requires fewer and simpler items, requires less effort in building a space framework and provides greater stability of the space frameworks.

The invention is to solve the problem a new way by the node element with a vault-like resp. self-supporting floor is formed and facing the wooden bars on the outside, at right angles or at an acute angle to their longitudinal extent opposing Anstellflächen, and by at the end faces of the wooden rods, respectively. the rear surfaces facing away from the Anstellflächen the vault-like bottom from the inside to the outside passing through, in the wooden rods approximately along the longitudinal extension screwed extending fasteners is formed.

The forms gewölbeartigr resp. self-supporting soils lie between the flat bottom, a conical or pyramidal bottom and the hemisphere bottom as borderline cases. Torispheric floors are composed of a spherical cap and a brim of different radii.

The device is particularly suitable for the construction of wall, ceiling, roof and / or floor elements with a static structure of low wood content. These components are preferably prefabricated and used for residential, commercial, cultural and / or industrial construction.

They prove themselves for a modular design and favor insulation between two panels with insulation or sound insulation material, for example by flocculation.

The device gives the components a high stability and good strength due to a high degree of static utilization.

For covert laying of electrical and sanitary pipes offers the device between two panels excellent accessibility for routing and fastening.

It is achieved a multi-dimensional, areal as well as spatial load transfer on the construction.

An application of the device for mutually rigid connection of two plates to components proves particular in the construction of buildings resp. in building construction as advantageous.

• Fig. 1 eine räumliche Darstellung einer mit einem Grundelement versehenen erfindungsgemässen Vorrichtung,
• Fig. 2 einen Querschnitt durch die in Fig. 1 dargestellte Vorrichtung,
• Fig. 3 eine räumliche Darstellung einer in eine Platte eingelassenen erfindungsgemässen Vorrichtungsvariante,
• Fig. 4 einen Querschnitt durch die in Fig. 3 dargestellte Vorrichtungsvariante,
• Fig. 5 eine räumliche Darstellung einer in ein Grundelement eingebaute weitere erfindungsgemässe Vorrichtungsvariante,
• Fig. 6 eine räumliche Darstellung des in der weiteren Vorrichtungsvariante nach Fig. 5 gezeigten Grundelementes,
• Fig. 7 einen Querschnitt durch die in Fig. 5 dargestellte weitere Vorrichtungsvariante,
• Fig. 8 eine räumliche Darstellung einer Ausführung der Vorrichtung mit zwei Knotenelementen,
• Fig. 9 einen Querschnitt durch die in Fig. 8 dargestellte Ausführung
• Fig. 10 eine räumliche Darstellung einer aus zwei vereinten Böden gebildete Ausführung der Vorrichtung,
• Fig. 11 einen Querschnitt durch die in Fig. 10 dargestellte Ausführung der Vorrichtung,
• Fig. 12 einen Querschnitt durch eine weitere aus zwei vereinten Böden gebildete Ausführung der Vorrichtung,
• Fig. 13 einen Querschnitt durch eine Fassadenaufhängung der Vorrichtung und
• Fig. 14 einen Querschnitt durch eine weitere Fassadenaufhängung der Vorrichtung,
• Fig. 15 einen Querschnitt einer gegenüber den Fig. 1 bis 7 alternativen Ausführungsform der Vorrichtung,
• Fig. 16 einen Querschnitt einer, insbesondere gegenüber Fig. 15 alternativen Ausführungsform der Vorrichtung und
• Fig. 17 eine räumliche Darstellung einer Anwendung der erfindungsgemässen Vorrichtung an einem Bauelement, das aus einer Vielzahl zwischen zwei Platten zu Knotenpunkten verbundener Vorrichtungen besteht.

The invention will be described with reference to the cited resp. the cited prior art and the drawing, to which reference is made with respect to all unspecified details in the description explained using an exemplary embodiment. In the drawing show:

• Fig. 1 a spatial representation of a device provided with a basic element according to the invention,
• Fig. 2 a cross section through the in Fig. 1 illustrated device,
• Fig. 3 a spatial representation of a recessed in a plate inventive device variant,
• Fig. 4 a cross section through the in Fig. 3 illustrated device variant,
• Fig. 5 a spatial representation of a built-in a basic element further inventive device variant,
• Fig. 6 a spatial representation of the in the further device variant according to Fig. 5 shown basic element,
• Fig. 7 a cross section through the in Fig. 5 illustrated further device variant,
• Fig. 8 a spatial representation of an embodiment of the device with two node elements,
• Fig. 9 a cross section through the in Fig. 8 illustrated embodiment
• Fig. 10 a spatial representation of an embodiment of the device formed from two unified bottoms,
• Fig. 11 a cross section through the in Fig. 10 illustrated embodiment of the device,
• Fig. 12 a cross-section through another embodiment of the device formed from two unified bottoms,
• Fig. 13 a cross-section through a facade suspension of the device and
• Fig. 14 a cross section through a further facade suspension of the device,
• Fig. 15 a cross section of one opposite the Fig. 1 to 7 alternative embodiment of the device,
• Fig. 16 a cross section of, in particular opposite Fig. 15 alternative embodiment of the device and
• Fig. 17 a spatial representation of an application of the inventive device to a device consisting of a plurality between two plates to nodes of connected devices.

Fig. 1 and 2 represent a device 1 for a node connection of a space frame, ie, run in the node element 2 wooden rods 3 from different spatial directions 3 together. A juxtaposition of such node element 2 at a distance in all directions, makes it possible to build a space framework. The node element 2 points in Fig. 1 and 2 a base element 9 with recesses 7 for guiding the wooden rods 3 on, as well as storage area 16 which specify the angular position of the Holstäbe 3. The base element 9 is glued or screwed on the base element 6 to prevent shifting of the entire node element 2. In the base element 6 is on the side facing away from the base element 9 a recess 8 is inserted and a curved bottom 4 is inserted, with the possibility that Node element 2 to be installed without inserted curved bottom 4, insofar as the recess 8 is sufficient to absorb the force. In the arched bottom 4 are through holes, which serve to carry out parallel threaded wood screws 5. In the example shown, the through-holes in the curved bottom 4 or the parallel threaded wood screws 5 As well as the wooden rods 3 are arranged at 45 °, but are conceivable any angular arrangements and distributions of the wooden rods 3 about an appearing in plan view or as a point symmetry axis 11, which extends approximately perpendicularly through the base 6 or base element 9. The parallel threaded wood screws 5 pass through the arched bottom 4, the base element 6 and the base element 9 and are bolted to the wooden rods 3. The parallel threaded wood screws 5 are driven depending on the size of the cross section of the wooden rods 3 and the load requirement without pre-drilling, by means of core drilling or by means of previously cut thread in the wooden rods 3. In addition, the frictional connection between the parallel threaded wood screw 5 and the wood of the wooden rods 3 can be increased by preceding glue application on the parallel threaded wood screw 5.

In the FIGS. 3 and 4 a device 1 is shown for a node connection, in which the base element 9, for example made of a wood material, is inserted into a groove 13 of the base element 6. By virtue of the groove guide 14 provided on the base element 9, which is slightly lower than the groove 13 of the base element 6, the base element 9 lies with the shoulder surface 15 on the base element 6 and is positioned and positively locked by the groove guide 14 or the groove 13 connected. In the base element 9, on the side facing the base element 6, a curved bottom 4, for example made of metal, is inserted into a prepared for insertion recess 8, which has through holes for screwing the wooden rods 3. With parallel threaded wood screws 5, which protrude through the arched bottom 4 and the base element 2, the wooden rods 3 are screwed. With a wood screw 12, which passes through the base element 6 and is recessed therein and protrudes through the arched bottom 4 and is screwed tightly in the base element 9; this gives the node element 2 a rigid attachment to the base element 6. The chamfers 11 on the wooden rods 3 and the corresponding reductions 10 in the base element 9 serve to prevent splitting of the wooden rods 3 when screwing the parallel threaded wood screws 5 with the wooden rods 3, with an additional positive aspect is created by a clear positioning of the wooden rods 3. The wooden rods 3 point in the FIGS. 1 to 14 a square cross-section, conceivable of course are also round and polygonal cross-sections of the wooden rods 3. According to the cross sections of the wooden rods 3, the base elements 9 are processed.

Another variant for the implementation of a device 1 for node connections is in the FIGS. 5 to 7 demonstrated. For this purpose, depressions 18 for receiving or positioning the wooden rods 3 are provided directly in the base member 6, which grant a positive connection. The recess 8 for the curved bottom 4 is located in the base element 6 on the opposite side of the recesses 18 for the wooden rods 3. Also in this embodiment, the angular position of the wooden rods 3 is selected, accordingly, the recesses 18 and the through holes in the curved bottom 4 to install. The chamfer 11 prevents unwanted resting of the wooden rods 3 on the bottom of the recess 18. The parallel threaded wood screws 5 serve, as already mentioned, the screwing of the wooden rods 3 with the base member 6 and enforce the through holes of the curved bottom. 4

Fig. 15 shows an alternative embodiment of the mutual support or spacing of two plates to form a component resp. Walls, roofs, ceilings or floors serving device 1. The connected to the base element 6-for example by means of wood screws-Distanzlement 31 has in comparison with the base element 9 in FIGS. 1 and 2 no inclined abutment surfaces 16 but a rectangular recess 19 formed of three vertical guide surfaces, on, on which the arrow-shaped cut ends of Holtstäbe 3 are each employed and parked on the base element 6. The node element 2 can be by a positive in- resp. Joining the items together in a simple and precise way.

Fig. 16 Figure 11 illustrates a construction in which, instead of a plate-shaped spacer element, a pyramidal wedge element 36 is screwed head-on to the base element 6, the side surfaces 37 of the wedge element 36 and the surface of the base element 6 each form a wedged pocket 38 in which they have an acute-angled end Wooden rods 3 are inserted and screwed over the recess 8.

Both the device after Fig. 15 as well as the one after Fig. 16 have a form-fitting arrangement of the items of a node connection.

In the FIGS. 8 and 9 is, by connecting two node elements 2 with each other, a so-called. Full node 20 shown. Instead of one, as in the previous embodiments, basic element 6, a node element 2 is connected to a further node element 2 by the two node elements 2 are virtually screwed together at the back. This allows the space frame to propagate in all directions. In the center of the full node 20, as in Fig. 9 Again, there is the possibility that the vaulted floors 4, for example, made of metal do not install and leave the head of Parallelgemdnde wood screws 5 directly in the recess 8 of the base element 6, wherein the height of the male forces is reduced. When inserting a curved bottom 4, it is important to ensure that the separation point of the curved bottoms 4 is not congruent with the separation point of the base elements 9, which gives the full node 20 a higher stability. A ring dowel 23 is each half in a socket element 9 associated Ring groove inserted to connect the two node element 2 together and to achieve the desired full node 20. In the center of the arched bottom 4 and the recess 8 also a cross-threaded sleeve 22 is inserted, which is screwed with the screws 21 from the outside of the full knot 20 ago. The screws 21 penetrate the base element 9, starting from the not occupied with wood rods 3 surfaces of the full knot 20 and are screwed to the cross-threaded sleeve 22. Thus, the two node element 2 are joined together and stabilize the full node 20 in addition to the ring dowel 23. Also, a device 1 for a node connection, which is designed as a full node 20, may have any number of wooden rods 3. The number of wooden rods 3 and their angular position accordingly, the base elements 9 and the curved bottoms 4 are formed. The 8 and 9 show a variant of a full node 20 with twelve bolted wooden rods 3, which have a square cross-section, with wooden rods 3 are also usable with other cross-section.

In the FIGS. 10 and 11 a device 1 for a node connection is recorded, in which the curved bottoms 4 are used directly as a base element 9. The curved floors 4 have a diameter which allows the assembly of the intended number of wooden rods 3 directly to the outer diameter. On the front side of the wooden rods 3, a radius 25 corresponding to the outer diameter of the curved bottom 4 is provided, which serves as a positioning surface 16. Can be imagined planar Anstellflächen 16 or recessed depressions, which are located on the outside of the base member 9 and the curved bottom 4 to connect flat or curved end-side ends of the wooden rods 3. By the parallel threaded wood screws 5, the wooden rods 3 are pulled to the curved bottom 4. To ensure that the heads of the parallel-threaded wood screws 5 rest on a level contact surface, the parallel-threaded wood screws are used 5 lined at the heads distance bushing 26 underlaid, which determine a distance from the curved bottom 4. Die Distanzbüchsen 26 sind an den Enden der Rippen 26 und 26 angeordnet. The wooden rods 3 each have a sleeve 30 on the front side, which is intended to prevent the splitting of the wooden rods 3. The sleeves 30 can be pressed into the front side of the respective wooden rod 3 in a prepared groove, or they have an internal and / or external thread, with which they are rotated in the wooden rod 3, whereby tensile and compressive forces not only on the Parellel threaded wood screws. 5 but also be transferred via the built-in sleeves 30 in the end faces of the wooden rods. In order to screw together the two curved bottoms 4, used here as a base element 9, a cross-threaded sleeve 22 is inserted in the center, which in turn is screwed from the outside of the arched floors 4 or base elements 9 forth. Through a hole which serves as a filling opening 27, a potting material is poured, which grants a better fixation of the parallel threaded wood screws 5 and a better load distribution after curing.

Fig. 12 shows a full node 20 of the structure of the full node 20 of 8 and 9 equivalent. Instead of a Rhombenkuboktaeders, in Fig. 8 9 and 9, the full node 20 is in FIG Fig. 12 a ball, which is for example composed of two concrete hemispheres. Both in the previous, as well as in this embodiment, are located in the center of two curved floors 4. The wooden rods 3 have as blasting a sleeve 30, which are incorporated into the wooden rods 3. The sleeve 30 is pressed into a groove which has been milled into the end of the wooden rods 3, thus reducing the possibility that the wooden rods 3 split during screwing. As already mentioned, the sleeve 30 can be equipped with an internal and / or external thread. Alternatively, only a circular groove in the front side of the wooden bar 3 may be present, which should also prevent the splitting of the wooden bar 3.

Fig. 13 shows a device 1 for a junction connection, which serves as a facade suspension to an existing masonry. The wooden rods 3 are inserted into recesses 18 in a wall element 33 and are screwed with the parallel threaded wood screws 5, which protrude through the arched bottom 4. The pre-assembled on the wall element 33 truss is then attached to the existing masonry (not visible).

In Fig. 14 the attachment of the pre-assembled on the wall element 33 truss is provided directly in the center of the node element 2. By mounting screw 34 mounted on the wall element 33 truss is screwed to the existing masonry 32. By the mounting plate 35, which is underlaid the head of the mounting screw 34, an optimal distribution of forces on the wall element 33 is achieved.

Fig. 17 shows a wall, a ceiling, a roof or a bottom forming member 40 having between two plates 41, 42 mounted devices 1. The arrangement of the devices 1 is chosen so that they are interconnected and their node connections are attached opposite and at regular intervals offset to the plates 41,42.

Claims (14)

Device for forming a junction connection of a plurality of wooden rods (3) of a space framework arranged at an acute angle, preferably to an axis of symmetry (17), which are screwed to at least one end-side end region with a node element (2) forming the junction connection, characterized in that the node element (2) with a vault-like resp. self-supporting floor (4) is formed and on the outside of the wood bars (3) facing, right or acute angle to their longitudinal extension opposing Anstellflächen (16), and by at the end faces of the wooden rods (3) resp. the Ansteilflächen (16) facing away from the rear side of the arch-like resp. Self-supporting floor (4) from inside to outside passing, in the wooden bars (3) extending approximately along the longitudinal extension screwed connecting elements (5) is formed. Apparatus according to claim 1, characterized in that the curved bottom (4) is designed as a dome of a ball. Apparatus according to claim 1 or 2, characterized in that a longitudinal central axis of the wooden rods (3) through the center of the arch-like resp. self-supporting floor (4) or the bottom (4) forming dome of a ball runs. Device according to one of claims 1 to 3, characterized in that the node element (2) consists of a recess (8) with the vault-like resp. 4) and a base element (6) connected to the base element (9) is formed, on which the Anstellfläche (16) of the wooden rods (3) around the through the center of the bottom (4) and perpendicular to the base element (6) extending symmetry axis (17) are arranged distributed. Device according to claim 4, characterized in that the screws provided as connecting element (5) are the basic element (6) and penetrate the base element (9) of the junction connection frontally immersed in the wooden rods (3). Device according to one of claims 1 to 5, characterized in that the node element (2) consists of a base element (6) and a base connected to the latter element (9), on which the Anstellflächen (16) of the wooden rods (3) around a arranged distributed through the center of the bottom (4) and an axis perpendicular to the base element (6) symmetry axis (17) of the node element (2) and on the base element (6) side facing a recess (8) with a curved bottom (4) are provided. Apparatus according to claim 6, characterized in that the base element (6) and the base element (9) are shear-resistant connected to each other. Device according to one of claims 1 to 5, characterized in that the Anstellflächen (16) of the wooden rods (3) in recesses (18) of a node element (2) formed base element (6) are arranged, on whose side facing away from the Anstellflächen (16) of the curved bottom (4) for the the base element (6) passing through connecting elements (6) is inserted. Device according to one of claims 1 to 8, characterized in that the node element (2) by two with Anstellflächen (16) of the wooden rods (3) connected to base elements (9) is formed on the Anstellflächen (16) facing away resp. each having facing sides facing each other a curved bottom (4) through which the wooden rods (3) associated with connecting elements (5) pass through the respective base element (9). Apparatus according to claim 9, characterized in that the base elements (9) on the symmetry axis (17) by a half angular distance of two wooden rods (3) of a base element (9) are arranged rotated to each other. Device according to one of claims 1 to 15, characterized in that the vault-like resp. self-supporting floor (4) is formed by an inserted molding. Device according to one of claims 1 to 3, characterized in that between the nodes forming a node connection ends of the wooden rods (3) with the base element (6) connected spacer element (31) is arranged, which associated with the wood rods (3) for the positive connection, has rectangular recesses (19) on which and the base element (6) formed with the arrow-shaped ends wood rods (3) are resp. are supported. Device according to one of Claims 1 to 3, characterized in that a wedge element (36) which is connected to the base element (6) is arranged between the ends of the wooden rods (3) forming a junction connection, which with the facing upper side of the base element (6) has a Keilige pocket (38) forms, in which the beveled end face having wood rods (3) are inserted. Application of the device according to one of claims 1 to 13, in a wall, roof, ceiling and / or floor formed component (40), which consists of two spaced plates (41, 42), on each of which a plurality facing and contiguous attached, a spatial framework forming, offset devices (1) are attached.

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