EP0683303B1 - Ringdowel connection - Google Patents
Ringdowel connection Download PDFInfo
- Publication number
- EP0683303B1 EP0683303B1 EP95105713A EP95105713A EP0683303B1 EP 0683303 B1 EP0683303 B1 EP 0683303B1 EP 95105713 A EP95105713 A EP 95105713A EP 95105713 A EP95105713 A EP 95105713A EP 0683303 B1 EP0683303 B1 EP 0683303B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- annular groove
- metal sleeve
- sleeve
- metal
- components
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 40
- 239000002023 wood Substances 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000007373 indentation Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
Definitions
- the invention relates to a connection of two surfaces lying one against the other Components, at least one of which is made of wood, with one through Bores and both components extending and these using a nut mutually bracing cap screw, an annular groove in each wooden component, which is at a concentric distance to the hole, which is about corresponds to one to two times the diameter of the bore, whereby that of the Contact surface outgoing axial depth of the annular groove about 1/5 of their Diameter corresponds and their radial width at least 1.5 to 2.0 mm and with a metal sleeve that can be inserted into the ring groove (s).
- DIN 1052 is used to create connections between two wooden components the aforementioned type consisting of a metal sleeve ring dowel known, which is concentric to a connecting screw in the wooden components be pressed in, for the positioned arrangement of the metal sleeve a prepared groove can be provided.
- a metal sleeve ring dowel known, which is concentric to a connecting screw in the wooden components be pressed in, for the positioned arrangement of the metal sleeve a prepared groove can be provided.
- Ring dowels become transverse forces acting on the connection, insofar as they are generated by the connecting screw on the contact surfaces of the wooden components Clamping and frictional force exceed from the connecting screw and taken up and removed from the surrounding wood.
- the relatively small size of the connecting screw and the bore walls in the wood to extreme surface pressures with resulting deformations and cracks in the wood.
- connection by means of a
- wooden components in the area of the ring dowel crossing the joint improved when the connecting screw is essentially only loaded on train is and the largest proportion of the shear load on the connection over the much larger inner and outer peripheral surfaces of the metal sleeve is transferred between the wooden components.
- the ring dowel works thus deformation, cracking and splitting of the wood in the area towards the connecting screw.
- the known ring dowels are not able to connect the above-described type effective against larger shear stresses secure because the metal sleeves become oval with increasing lateral force Deform cross sections, both of which are enclosed by the metal sleeve as well as deforming and damaging the wood surrounding it and the connection loses its strength.
- This disadvantage occurs particularly for connections between a wooden component and e.g. a metal or concrete component, in which the metal sleeve is only in the wooden component is pressed in, but does not bridge the parting line between the two components.
- DE-C-833 559 discloses a dovetail-like connection between two butt-lying wooden components using two die Parting gap bridging flexible partial dowel known, each in the parting line colliding at an obtuse angle, appropriately dimensioned Insert holes of both components inserted and with these be glued.
- the partial dowels consist of channel-shaped ones Half-shells of relatively rigid material which can be inserted into the receiving holes through an outer central band to a tubular Arrangement are held together.
- To the gutter-shaped To be able to bend partial dowels they are in individual, side by side Dowel bars divided. So that the dowel rods from the tubular arrangement not collapse into a disorderly bunch, they are in the area their ends each supported by the circumference of circular discs.
- the two discs have the further task of inserting the dowel rods into the to direct inclined bores and them during the process To support bending so that the open edges of the holes are not be damaged or split up. Because the dowel rods during the bending process near the center of the pipe axis, the disks have the additional task, the bars at their bending or kinking apexes radially to be forced outwards against the outer band remaining in the joint. Finally, the disks each come into a position opposite the contact surface each component recessed so that they are there after gluing Connect both part anchors uniformly on both sides of the joint.
- the object of the invention is to combine the above-described Kind of to improve and design that it through easy and precise assembly of your elements can be made quickly and at Ensuring dimensional stability of the metal sleeve even in the case of large ones Cross loads harmful surface pressures between the connecting screw and able to avoid these receiving holes is.
- the proposed connection enables a quick, accurate assembly of the associated individual parts by forcing the metal sleeve and the metal disk into the prepared, dimensionally coordinated annular groove (s) or recess. Since the sleeve is stiffened by the washer, which is crossed and supported by the connecting screw, it can no longer deform even under high transverse loads. Due to the shape stability of the sleeve, a particularly favorable large-scale transmission of the shear forces into the intact, surrounding and enclosed wood of the sleeve is guaranteed.
- the recessed surface area of the wooden component preferably has opposite the thickness of the metal disc is a slight excess and is the axial depth of the annular groove with a slight excess in relation to the length of the Metal sleeve executed, which ensures that both components when Do not clamp using the connecting screw due to constraints are prevented from lying against each other over the entire surface due to the disc or sleeve.
- the metal sleeve can consist of a longitudinal section consist of a round tube and on their front sides for free Insertion in the ring groove or for the positive reception of the metal disc on the inner and outer circumference with deburred or broken Edges.
- the metal sleeve is at most double as long as the axial depth of an annular groove, so that through the metal disc The resulting stiffening is effective over the entire length of the sleeve is.
- the power transmission between the connecting screw and To keep the metal disc largely free of play and on the other hand during assembly to be able to easily slide the washer onto the screw shows the Central disc opening in relation to the screw diameter expedient smallest tolerances.
- annular sleeve 10 is in the one-sided version 10a with axial extension B2 and double-sided version 10b with axial extension B1 reproduced, and a disc 12 with a concentric Opening 24 and a thickness S, the outer diameter Di 'only is slightly smaller than the inner diameter Di der Ring sleeve 10 so that the disc 12 without play in the sleeve 10th can be introduced.
- FIG. 2 shows a one-sided ring dowel connection, with which a wooden component 16 with a component 22, e.g. made of metal or concrete, is connected flat to one another.
- the one-sided ring sleeve 10a is concentric to one Through hole 26 arranged groove 14 is inserted, which in Wooden component at a depth e.g. is milled, which is slightly larger is than the axial extent B2 of the sleeve 10a.
- the disc 12 is in a concentric in the wooden component 16 Through hole 26 arranged circular recess 18th housed the one with respect to the thickness S of the disc 12 has a slight oversize.
- a transverse force on the wooden component 16 i.e. a Force transversely to the longitudinal axis of the connecting screw 20, then this over the sleeve 10a on the disc 12, from there to the Transfer screw 20 and thus also transferred to component 22.
- the disk 12 distributes the force over the entire Sleeve circumference and prevents deformation of the sleeve 10a.
- the diameter of the through hole 26 is with respect to the screw diameter shown exaggerated in Fig. 2, so that intended slight play between the window opening 24 and the connecting screw 20 can be seen.
- a groove 28 in the wooden component 30 concentric to the through hole 26 and the groove 14 opposite arranged.
- the double long ring sleeve 10b extends into both grooves 14 and 28, here too the total groove depth is greater than the axial length B1 Sleeve 10b.
- the recess 18 for the disk 12 in the component 16 could alternatively be provided in the component 30, because the radial Support (shape retention) of the ring sleeve 10b is sufficient a disc 12, which in any case in the area of the contact surfaces both components 16, 30 is arranged.
- An essential aspect of the dowel connection according to the invention is that despite great forces only very small deformations the ring sleeve 10 occur and thereby on the of Disc 12 stabilized ring sleeve 10 just within the Sleeve 10 are permanent wood to absorb forces Available. This creates the possibility of a highly resilient Establish connection especially in such cases in which the wood cover outside the sleeve 10 is very small due to the component dimensions, for example at Wooden steps.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Dowels (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Verbindung zweier flächig aneinanderliegende Bauteile, von denen mindestens eines aus Holz besteht, mit einer sich durch Bohrungen und beider Bauteile erstreckenden und diese mittels einer Mutter gegeneinander verspannenden Kopfschraube, einer Ringnut in jedem Holzbauteil, die in einem konzentrischen Abstand zur Bohrung verläuft, der etwa dem ein- bis zweifachen Bohrungsdurchmesser entspricht, wobei die von der Anlagefläche ausgehende axiale Tiefe der Ringnut ungefähr 1/5 ihres Durchmessers entspricht und ihre radiale Breite mindestens 1,5 bis 2,0 mm beträgt, sowie mit einer in die Ringnut(en) einführbaren Metallhülse.The invention relates to a connection of two surfaces lying one against the other Components, at least one of which is made of wood, with one through Bores and both components extending and these using a nut mutually bracing cap screw, an annular groove in each wooden component, which is at a concentric distance to the hole, which is about corresponds to one to two times the diameter of the bore, whereby that of the Contact surface outgoing axial depth of the annular groove about 1/5 of their Diameter corresponds and their radial width at least 1.5 to 2.0 mm and with a metal sleeve that can be inserted into the ring groove (s).
Aus DIN 1052 sind zur Herstellung von Verbindungen zwischen zwei Holzbauteilen der vorbezeichneten Art aus einer Metallhülse bestehende Ringdübel bekannt, die konzentrisch zu einer Verbindungsschraube in die Holzbauteile eingepreßt werden, wobei zur positionierten Anordnung der Metallhülse eine vorbereitete Nut vorgesehen sein kann. Ohne Anwendung eines Ringdübels werden auf die Verbindung wirkende Querkräfte, soweit sie die von der Verbindungsschraube an den Anlageflächen der Holzbauteile erzeugte Klemm- und Reibkraft übersteigen, von der Verbindungsschraube und dem sie umgebenden Holz aufgenommen und abgetragen. Dabei kommt es zwischen dem verhältnismäßig geringen Umfang der Verbindungsschraube und den Bohrungswandungen im Holz zu extremen Flächenpressungen mit daraus resultierenden Verformungen und Rißbildungen im Holz. Demgegenüber wird die Querbelastbarkeit der Verbindung mittels eines die Holzbauteile im Bereich der Trennfuge durchquerenden Ringdübels insofern verbessert, als die Verbindungsschraube im wesentlichen nur auf Zug belastet ist und der größte Anteil der die Verbindung beanspruchenden Querlast über die wesentlich größeren inneren und äußeren Umfangsflächen der Metallhülse zwischen den Holzbauteilen übertragen wird. Der Ringdübel wirkt somit einer Verformung, Rißbildung und Aufsplitterung des Holzes im Bereich der Verbindungsschraube entgegen.DIN 1052 is used to create connections between two wooden components the aforementioned type consisting of a metal sleeve ring dowel known, which is concentric to a connecting screw in the wooden components be pressed in, for the positioned arrangement of the metal sleeve a prepared groove can be provided. Without using one Ring dowels become transverse forces acting on the connection, insofar as they are generated by the connecting screw on the contact surfaces of the wooden components Clamping and frictional force exceed from the connecting screw and taken up and removed from the surrounding wood. Here comes it between the relatively small size of the connecting screw and the bore walls in the wood to extreme surface pressures with resulting deformations and cracks in the wood. In contrast is the cross-load capacity of the connection by means of a In this respect, wooden components in the area of the ring dowel crossing the joint improved when the connecting screw is essentially only loaded on train is and the largest proportion of the shear load on the connection over the much larger inner and outer peripheral surfaces of the metal sleeve is transferred between the wooden components. The ring dowel works thus deformation, cracking and splitting of the wood in the area towards the connecting screw.
Dennoch sind die bekannten Ringdübel nicht in der Lage, Verbindungen der vorbeschriebenen Art gegenüber größeren Scherbeanspruchungen wirksam abzusichern, weil sich die Metallhülsen bei zunehmender Querkraft zu ovalen Querschnitten verformen, wobei sowohl das von der Metallhülse umschlossene als auch das sie außen umgebende Holz verformt und beschädigt wird und die Verbindung ihre Festigkeit verliert. Dieser Nachteil tritt besonders bei Verbindungen zwischen einem Holzbauteil und z.B. einem Metall- oder Betonbauteil auf, bei denen die Metallhülse lediglich in das Holzbauteil eingepreßt ist, nicht jedoch die Trennfuge zwischen beiden Bauteilen überbrückt.Nevertheless, the known ring dowels are not able to connect the above-described type effective against larger shear stresses secure because the metal sleeves become oval with increasing lateral force Deform cross sections, both of which are enclosed by the metal sleeve as well as deforming and damaging the wood surrounding it and the connection loses its strength. This disadvantage occurs particularly for connections between a wooden component and e.g. a metal or concrete component, in which the metal sleeve is only in the wooden component is pressed in, but does not bridge the parting line between the two components.
Aus DE-C- 833 559 ist eine schwalbenschwanzartige Verbindung zwischen zwei stumpf einanderliegenden Holzbauteilen unter Verwendung zweier die Trennfuge überbrückender biegsamer Teildübel bekannt, die jeweils in an der Trennfuge in stumpfen Winkel zusammenstoßende, entsprechend bemessene Aufnahmebohrungen beider Bauteile eingeführt und mit diesen verleimt werden. Bei einer Ausführungsform bestehen die Teildübel aus rinnenförmigen Halbschalen relativ starren Materials die bis zum Einführen in die Aufnahmebohrungen durch ein äußeres mittleres Band zu einer rohrförmigen Anordnung zusammengehalten werden. Um die rinnenförmigen Teildübel biegen zu können, sind sie in einzelne längs nebeneinanderliegende Dübelstäbe unterteilt. Damit die Dübelstäbe aus der rohrförmigen Anordnung nicht zu einem ungeordneten Haufen zusammenfallen, sind sie im Bereich ihrer Enden jeweils durch den Umfang kreisrunder Scheiben unterstützt. Wenn die zu verbindenden Holzbauteile gegeneinander bewegt werden, haben die beiden Scheiben die weitere Aufgabe, die Dübelstäbe in die geneigten Bohrungen zu lenken und sie während der dabei stattfindenden Biegung so zu unterstützen, daß die offenen Kanten der Bohrungen nicht beschädigt oder aufgesplittert werden. Da die Dübelstäbe während des Biegevorgangs sich in ihrer Mitte der Rohrachse nähern, haben die Scheiben die zusätzliche Aufgabe, die Stäbe an ihren Biege- bzw. Knickscheiteln radial nach außen gegen das in der Trennfuge verbleibende äußere Band zu zwängen. Schließlich gelangen die Scheiben jeweils in eine gegenüber der Anlagefläche jedes Bauteils vertiefte Einsenkung, so daß sie dort nach Verleimung beide Teildübel beidseitig der Trennfuge einheitlich miteinander verbinden. Da die beiden Holzbauteile einschließlich der gebogenen bzw. abgeknickten Dübelstäbe in den Aufnahmebohrungen ohne Leimanwendung zueinander beweglich bleiben, entsteht der beabsichtigte Verbund erst durch Einbringung von Leim in die Bohrungen mit anschließender Preß-Verleimung der beiden Holzbauteile, so daß dann der gesamte Dübel und die Holzbauteile eine unlösbare, starre Einheit bilden.DE-C-833 559 discloses a dovetail-like connection between two butt-lying wooden components using two die Parting gap bridging flexible partial dowel known, each in the parting line colliding at an obtuse angle, appropriately dimensioned Insert holes of both components inserted and with these be glued. In one embodiment, the partial dowels consist of channel-shaped ones Half-shells of relatively rigid material which can be inserted into the receiving holes through an outer central band to a tubular Arrangement are held together. To the gutter-shaped To be able to bend partial dowels, they are in individual, side by side Dowel bars divided. So that the dowel rods from the tubular arrangement not collapse into a disorderly bunch, they are in the area their ends each supported by the circumference of circular discs. If the wooden components to be connected are moved against each other, the two discs have the further task of inserting the dowel rods into the to direct inclined bores and them during the process To support bending so that the open edges of the holes are not be damaged or split up. Because the dowel rods during the bending process near the center of the pipe axis, the disks have the additional task, the bars at their bending or kinking apexes radially to be forced outwards against the outer band remaining in the joint. Finally, the disks each come into a position opposite the contact surface each component recessed so that they are there after gluing Connect both part anchors uniformly on both sides of the joint. Since the two wooden components including the curved or kinked Dowel rods in the mounting holes without glue application remain movable to each other, the intended bond is only created by Introducing glue into the holes with subsequent press gluing of the two wooden components, so that then the entire dowel and the wooden components form an inseparable, rigid unit.
Aufgabe der Erfindung ist es, eine Verbindung der eingangs beschriebenen Art dahingehend zu verbessern und auszugestalten, daß sie sich durch leichte und exakte Montage ihrer Elemente schnell herstellen läßt und bei Gewährleistung von Formstabilität der Metallhülse auch im Fall großer Querbelastungen schädliche Flächenpressungen zwischen der Verbindungsschraube und den diese aufnehmenden Bohrungen zu vermeiden in der Lage ist.The object of the invention is to combine the above-described Kind of to improve and design that it through easy and precise assembly of your elements can be made quickly and at Ensuring dimensional stability of the metal sleeve even in the case of large ones Cross loads harmful surface pressures between the connecting screw and able to avoid these receiving holes is.
Diese Aufgabe wird gemäß der Erfindung durch die kennzeichnenden
Merkmale des Anspruches 1 gelöst.
Die vorgeschlagene Verbindung ermöglicht eine schnelle, genaue Montage
der dazugehörenden Einzelteile, indem die Metallhülse und die Metallscheibe
in die vorbereitete, maßlich abgestimmte Ringnut(en) bzw. Vertiefung
zwangsfrei eingeführt werden. Da die Hülse durch die von der Verbindungsschraube
durchquerten und abgestützen Scheibe ausgesteift ist, kann sie sich
auch unter hoher Querbelastung nicht mehr verformen. Aufgrund der Formstabilität
der Hülse ist eine besonders günstige großflächige Übertragung der
Scherkräfte in das unversehrt bleibende, die Hülse umgebende und von ihr
eingeschlossene Holz gewährleistet. Im Unterschied zu den bekannten vorbeschriebenen
Verbindungen werden bei der erfindungsgemäßen Ringdübelverbindung
über die Verbindungsschraube eingeleitete Scherkräfte größtenteils
auf die Scheibe und von dieser in die Hülse übertragen, um von dem
sie einschließenden Holz großflächig aufgenommen und abgetragen zu werden.
Es ist somit möglich, die vorteilhafte Verbindung gemäß der Erfindung
auch zwischen einem mit einer Metallhülse versehenen Holzbauteil und einem
Metall- oder Betonbauteil ohne Ringnut und ohne Metallhülse anzuwenden;
denn auch in diesem Fall werden über die Schraube wirkende
Scherkräfte nur in vernachlässigbarem Umfang direkt in das Holz der
Schraubenbohrung übertragen, während der überwiegende Scherkraftanteil
über die Metallscheibe in den Ringdübel weitergeleitet und in dem diesen
umfassenden Holz aufgenommen bzw. abgetragen wird. Wenn umgekehrt
Scherkräfte an einem der Bauteile der Verbindung angreifen, steht zu deren
Abtragung von vornherein die ausgesteifte großflächige Metallhülse mit dem
sie umfassenden Holz zur Verfügung, und nur ein verbleibender unbedeutender
Kraftanteil wird durch die Scheibe auf die in der Durchgangsbohrung
abgestützte Verbindungsschraube übertragen.This object is achieved according to the invention by the characterizing features of claim 1.
The proposed connection enables a quick, accurate assembly of the associated individual parts by forcing the metal sleeve and the metal disk into the prepared, dimensionally coordinated annular groove (s) or recess. Since the sleeve is stiffened by the washer, which is crossed and supported by the connecting screw, it can no longer deform even under high transverse loads. Due to the shape stability of the sleeve, a particularly favorable large-scale transmission of the shear forces into the intact, surrounding and enclosed wood of the sleeve is guaranteed. In contrast to the known connections described above, in the case of the ring dowel connection according to the invention, shear forces introduced via the connecting screw are largely transmitted to and from the disc in the sleeve in order to be absorbed and removed over a large area by the wood enclosing them. It is thus possible to use the advantageous connection according to the invention also between a wooden component provided with a metal sleeve and a metal or concrete component without an annular groove and without a metal sleeve; because in this case too, shear forces acting on the screw are only transferred to the wood of the screw hole to a negligible extent, while the predominant share of shear force is passed on via the metal washer into the ring dowel and in which the wood comprising it is absorbed or removed. Conversely, if shear forces act on one of the components of the connection, the stiffened, large-area metal sleeve with the wood surrounding it is available to remove it, and only a minor insignificant amount of force is transmitted through the washer to the connecting screw supported in the through hole.
Vorzugsweise besitzt der vertiefte Flächenbereich des Holzbauteils gegenüber der Dicke der Metallscheibe ein geringfügiges Übermaß und ist die axiale Tiefe der Ringnut mit geringem Übermaß bezüglich der Länge der Metallhülse ausgeführt, womit gewährleistet ist, daß beide Bauteile beim Verspannen mit Hilfe der Verbindungsschraube nicht durch Zwängungen aufgrund der Scheibe oder Hülse daran gehindert sind, vollflächig aneinanderzuliegen.The recessed surface area of the wooden component preferably has opposite the thickness of the metal disc is a slight excess and is the axial depth of the annular groove with a slight excess in relation to the length of the Metal sleeve executed, which ensures that both components when Do not clamp using the connecting screw due to constraints are prevented from lying against each other over the entire surface due to the disc or sleeve.
Zwecks kostengünstiger Fertigung kann die Metallhülse aus einem Längsabschnitt eines Rundrohres bestehen und an ihren Stirnseiten zum zwangsfreien Einführen in die Ringnut bzw. zur zwangsfreien Aufnahme der Metallscheibe am Innen- und Außenumfang jeweils mit abgegrateten oder gebrochenen Kanten versehen sein.For the purpose of cost-effective production, the metal sleeve can consist of a longitudinal section consist of a round tube and on their front sides for free Insertion in the ring groove or for the positive reception of the metal disc on the inner and outer circumference with deburred or broken Edges.
Im Fall der Verbindung zweier Holzbauteile ist die Metallhülse höchstensdoppelt solang wie die axiale Tiefe einer Ringnut, so daß die durch die Metallscheibe herbeigeführte Aussteifung über die gsamte Hülsenlänge wirksam ist. In the case of the connection of two wooden components, the metal sleeve is at most double as long as the axial depth of an annular groove, so that through the metal disc The resulting stiffening is effective over the entire length of the sleeve is.
Um einerseits die Kraftübertragung zwischen Verbindungsschraube und Metallscheibe weitgehend spielfrei zu halten und andererseits bei der Montage die Scheibe leicht auf die Schraube aufschieben zu können, weist die zentrische Scheibenöffnung gegenüber dem Schraubendurchmesser zweckmäßig geringste Toleranzen auf.On the one hand, the power transmission between the connecting screw and To keep the metal disc largely free of play and on the other hand during assembly to be able to easily slide the washer onto the screw shows the Central disc opening in relation to the screw diameter expedient smallest tolerances.
Nachfolgend sind anhand der Zeichnungen bevorzugte Ausführungsbeispiele der Ringdübelverbindung gemäß der Erfindung erläutert. Es zeigen
- Fig. 1
- Drauf- und Seitenansicht einer in der Dübelverbindung verwendeten Ringhülse und einer Scheibe,
- Fig. 2
- einen Schnitt durch eine einseitig ausgeführte Ringdübel-Verbindung und
- Fig. 3
- einen Schnitt durch eine zweiseitig ausgeführte Ring dübelverbindung.
- Fig. 1
- Top and side view of a ring sleeve and a washer used in the dowel connection,
- Fig. 2
- a section through a one-sided ring dowel connection and
- Fig. 3
- a section through a double-sided ring dowel connection.
In Fig. 1 ist eine erfindungsgemäße Ringhülse 10 in der
einseitigen Ausführung 10a mit axialer Erstreckung B2 und der
zweiseitigen Ausführung 10b mit axialer Erstreckung B1
wiedergegeben, sowie eine Scheibe 12 mit einer konzentrischen
Öffnung 24 und einer Dicke S, deren Außendurchmesser Di' nur
geringfügig kleiner ist als der Innendurchmesser Di der
Ringhülse 10, so daß die Scheibe 12 ohne Spiel in die Hülse 10
einführbar ist.In Fig. 1, an
In Fig. 2 ist eine einseitige Ringdübel-Verbindung dargestellt,
mit der ein Holzbauteil 16 mit einem Bauteil 22, z.B. aus Metall
oder Beton, flächig aneinanderliegend verbunden ist. Die
einseitige Ringhülse 10a ist in einer konzentrisch zu einer
Durchgangsbohrung 26 angeordneten Nut 14 eingeführt, die im
Holzbauteil in einer Tiefe z.B. eingefräst ist, die etwas größer
ist als die axiale Erstreckung B2 der Hülse 10a ist.2 shows a one-sided ring dowel connection,
with which a
Die Scheibe 12 ist in einer im Holzbauteil 16 konzentrisch zur
Durchgangsbohrung 26 angeordneten kreisförmigen Ausnehmung 18
untergebracht, die bezüglich der Dicke S der Scheibe 12 ein
leichtes Übermaß besitzt.The
Mit Hilfe einer Verbindungsschraube 20 werden die beiden
Bauteile 16 und 22 gegeneinander verspannt. Aufgrund der Luft
zwischen Ausnehmung 18 und Scheibe 12, sowie zwischen Nut 14
und Hülse 10a liegen die Bauteile 16 und 22 aneinander und sind
reibschlüssig miteinander verbunden. With the help of a connecting
Wirkt z.B. auf das Holzbauteil 16 eine Querkraft, d.h. eine
Kraft quer zur Längsachse der Verbindungsschraube 20, dann wird
diese über die Hülse 10a auf die Scheibe 12, von dort auf die
Verbindungsschraube 20 und somit auch auf das Bauteil 22 übertragen.
Die Scheibe 12 verteilt die Kraft auf den gesamten
Hülsenumfang und verhindert eine Verformung der Hülse 10a. Der
Druchmesser der Durchgangsbohrung 26 ist bezüglich des Schraubendurchmessers
in Fig. 2 übertrieben dargestellt, damit das
beabsichtigte geringe Spiel zwischen der Scheibenöffnung 24 und
der Verbindungsschraube 20 erkennbar ist.For example a transverse force on the
Bei einer in Fig. 3 dargestellten Verbindung zwischen zwei
Holzbauteilen 16 und 30 ist auch im Holzbauteil 30 eine Nut 28
konzentrisch zur Durchgangsbohrung 26 und der Nut 14 gegenüberliegend
angeordnet. Die doppelt lange Ringhülse 10b erstreckt
sich in beide Nuten 14 und 28 hinein, wobei auch hier
die gesamte Nuttiefe größere ist als die axiale Länge B1 der
Hülse 10b. Die Ausnehmung 18 für die Scheibe 12 im Bauteil 16
könnte alternativ im Bauteil 30 vorgesehen sein, denn zur radialen
Abstützung (Formhaltigkeit) der Ringhülse 10b reicht
eine Scheibe 12 aus, die in jedem Fall im Bereich der Anlageflächen
beider Bauteile 16, 30 angeordnet ist.In a connection shown in Fig. 3 between two
Ein Unterschied besteht jedoch in der Art und Weise, wie die
Querkräfte übertragen werden. Wirkt z.B. auf Bauteil 16 eine
Querkraft, dann wird diese von der Hülse 10b aufgenommen und
direkt auf Bauteil 30 weitergeleitet. Auch hier verteilt die
Scheibe 12 die Kraft auf dem gesamten Hülsenumfang in alle
Richtungen und verhindert, daß sich die Hülse 10b verformt. Nur
ein sehr geringer Kraftanteil wird von der Verbindungsschraube
20 aufgenommen.However, there is a difference in the way that
Lateral forces are transmitted. For example on component 16 a
Transverse force, then this is received by the
Ein wesentlicher Gesichtspunkt der erfindungsgemäßen Dübelverbindung
ist, daß trotz großer Kräfte nur sehr geringe Verformungen
der Ringhülse 10 auftreten und dadurch über die von der
Scheibe 12 stabilisierte Ringhülse 10 gerade das innerhalb der
Hülse 10 stehen bleibende Holz zur Aufnahme von Kräften zur
Verfügung steht. Daraus entsteht die Möglichkeit, eine hochbelastbare
Verbindung insbesondere auch in solchen Fällen einzurichten,
in denen die Holzüberdeckung außerhalb der Hülse 10
aufgrund der Bauteilmaße sehr gering ist, beispielsweise bei
Treppenstufen aus Holz.An essential aspect of the dowel connection according to the invention
is that despite great forces only very small deformations
the
Claims (6)
- Connection of two components flatly adjoining one another, at least one of which is made of wood, comprisingcharacterized in thata cap screw (20) extending through bores (26) of both components and bracing the components against one another by means of a nut,an annular groove (14) in each of the wooden components, extending at a concentric distance from the bore (26) corresponding to about the one- to twofold of the bore diameter,wherein the axial depth of the annular groove, starting from the adjoinment surface, corresponds to about one fifth of its diameter, and its radial width is at least 1.5 to 2.0 mm,and a metal sleeve (10) insertable into the annular groove(s) (14, 28),metal sleeve (10) is essentially adapted to the dimensions of the annular groove(s) (14, 28) and is insertable therein in a constraint-free manner,one of the wooden components (16, 30) is provided with a flat area (18) recessed by about 2 to 3 mm between bore (26) and annular groove,and a metal disk (12) adapted to the recessed flat area as well as the inner diameter of the metal sleeve (10) and insertable therein in a force-free manner comprises a centric screw passage opening (24).
- Connection according to claim 1, characterized in that the recessed flat area (18) of wooden component (16) is provided with a small overmeasure with respect to the thickness of the metal disk (12).
- Connection according to claim 1 or claim 2, characterized in that the axial depth of the annular groove (14) is provided with a small overmeasure with respect to the length of the metal sleeve (10).
- Metal sleeve of a connection according to claim 1 or claim 2, characterized in that it consists of a longitudinal section of a circular tube and is provided on its faces with burred or broken edges for constraint-free insertion in the annular groove or for constraint-free reception of the metal disk (12).
- Metal sleeve according to clailm 6, characterized in that in case of a connection of two wooden components (16, 30) it is at most twice as long as the axial depth of an annular groove.
- Metal sleeve of a connection according to claim 1 or claim 2, characterized in that its centric opening (24) is provided with minimum tolerances with respect to the screw diameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9407892U DE9407892U1 (en) | 1994-05-16 | 1994-05-16 | Ring dowel connection |
| DE9407892U | 1994-05-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0683303A1 EP0683303A1 (en) | 1995-11-22 |
| EP0683303B1 true EP0683303B1 (en) | 1998-07-15 |
Family
ID=6908584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95105713A Expired - Lifetime EP0683303B1 (en) | 1994-05-16 | 1995-04-15 | Ringdowel connection |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0683303B1 (en) |
| AT (1) | ATE168448T1 (en) |
| DE (2) | DE9407892U1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005019719B4 (en) * | 2005-04-25 | 2010-01-28 | Hubert Nowack | Connecting arrangement in a structure formed from structural parts, connection system and connecting means |
| DE102008012517B3 (en) | 2008-03-04 | 2009-10-15 | Hubert Nowack | Connection device for bearing structure, has two construction sections that are connected at junction point, where roller-shaped body is provided with opening towards longitudinal axis of body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE833559C (en) * | 1949-12-01 | 1952-03-10 | Curt Weinert | Connection of butt against each other made of wood and other wood-like materials |
-
1994
- 1994-05-16 DE DE9407892U patent/DE9407892U1/en not_active Expired - Lifetime
-
1995
- 1995-04-15 DE DE59502804T patent/DE59502804D1/en not_active Expired - Fee Related
- 1995-04-15 AT AT95105713T patent/ATE168448T1/en not_active IP Right Cessation
- 1995-04-15 EP EP95105713A patent/EP0683303B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE9407892U1 (en) | 1995-06-14 |
| DE59502804D1 (en) | 1998-08-20 |
| EP0683303A1 (en) | 1995-11-22 |
| ATE168448T1 (en) | 1998-08-15 |
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