EP0121770B1 - Device for assembling wood and metal constructions - Google Patents

Device for assembling wood and metal constructions Download PDF

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Publication number
EP0121770B1
EP0121770B1 EP84102399A EP84102399A EP0121770B1 EP 0121770 B1 EP0121770 B1 EP 0121770B1 EP 84102399 A EP84102399 A EP 84102399A EP 84102399 A EP84102399 A EP 84102399A EP 0121770 B1 EP0121770 B1 EP 0121770B1
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EP
European Patent Office
Prior art keywords
tensioning
tightening
angle
clamping
strap
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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
Application number
EP84102399A
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German (de)
French (fr)
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EP0121770A3 (en
EP0121770A2 (en
Inventor
Hans Forrer
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Individual
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Individual
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Priority to AT84102399T priority Critical patent/ATE46646T1/en
Publication of EP0121770A2 publication Critical patent/EP0121770A2/en
Publication of EP0121770A3 publication Critical patent/EP0121770A3/en
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Publication of EP0121770B1 publication Critical patent/EP0121770B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/20—Vices for clamping work of special profile, e.g. pipes
    • B25B1/205—Vices of the chain or strip type

Definitions

  • the invention relates to a device for joining wooden or metal structures in such a way that the necessary contact pressure can be applied to the joined joints without undesirable displacements.
  • Screw clamps are used for small and medium-sized constructions, especially for wood processing. These screw clamps can be connected to one another, for example by clamping means, to form double or even multiple clamps.
  • Screw clamps of considerable dimensions are available to cope with fastening tasks on larger constructions, the jaw spacing of which is on the order of a meter. Accordingly, these tools are massive, heavy and not least expensive; handling it is unwieldy and also requires an increasing amount of physical strength. Furthermore, the mechanical interaction of two or more screw clamps to form a force system is associated with sometimes complicated topological problems which cannot always be solved satisfactorily. Finally, there are limits to the size, that is, the span of a screw clamp, so that screw clamps as clamping or pressing devices are no longer an option for certain joining tasks.
  • a clamp which is used to clamp a frame-shaped body.
  • a frame can be held together and glued using four corner links and a tensioning strap that runs around the body.
  • the strap is tensioned by means of a threaded pin provided with a handle, a tensioning block holding the tensioning strap being moved by rotation of the handle and the strap being tensioned in this way.
  • this device has the major disadvantage that only essentially cuboid or frame-shaped workpieces can be held together, which require or allow a train between all four angle elements. An example of a U-shaped arrangement of three square timbers would inevitably be contracted by the closed band at the two free leg ends.
  • the tensioning device has a very bulky device for tightening the tensioning strap (tensioning block, holding lever, etc.), which is a hindrance in practical use.
  • FIG. 1 The principle of operation of the device according to the invention is shown in FIG. 1 in a schematic representation.
  • the construction parts to be joined are wrapped with a tensioning strap 8; any wrap is indicated by 8 '.
  • Within the loop is the part of the construction 10 on which the desired contact pressure is to be exerted.
  • these are the joining or work parts 10-1 and 10-2, in between an adhesive point 11, for example, is to be fixed during a certain adhesive time.
  • the desired pressure forces D1 and D2 act on the glue point.
  • the tension band loop 8 ' is under tension, the tension band 8 or its two ends are fixed to the angle 5 in two different ways.
  • the tensioning strap 8 is passed between a tensioning slide 3 and an eccentric bolt 1.
  • the eccentric pin 1 is arranged pivotably about an eccentric shaft 2.
  • the eccentric bolt can be swung open without resistance if the free end of the tensioning strap is pulled; in the other direction, the tape becomes stronger and stronger between the tensioning slide 3 and the eccentric pin 1 pinched.
  • Preloading on workpieces 10-1 and 10-2 is achieved by simply pulling on the free end of the belt that runs away from the clamping slide / eccentric pin clamping point.
  • a definite re-tensioning takes place by retracting the tensioning slide 3 with the help of the threaded rod 7, which can be brought into the desired tension in the pulling direction Z by means of the threaded rod 7, which can be brought in the pulling direction Z by turning a tensioning handle.
  • the slideway between the tensioning slide 3 and the angle part 5 is designed in such a way that jamming due to a possibly occurring torque is avoided.
  • the counter anchorage of the tensioning strap 8 is provided at a certain distance by means of a strap anchor 9 on the same side of the angle 5.
  • the device should be usable for as many dimensions of joining or work parts as possible.
  • the following dimensions are to be varied: the length of the tension band and the distance of the band anchor 9 on the angle leg 5 'from the angle leg 5 ", in other words, the parallel distance of the tension band end 8 anchored at 9 with the angle leg 5".
  • the closed force action circuit caused by the belt tensioning device should, if possible, apply forces to the workpieces which essentially coincide with the main fiber of the compressed workpieces.
  • FIG. 2 now shows an application in which two workpieces were glued together at point 11 and are fixed against each other during the gluing time.
  • the two joined parts 10-1 and 10-2 together have a prismatic shape with four right-angled edge parts.
  • a part of the device according to the invention with the angle legs 5 'and 5 "is applied to an edge part - the basic angle 5 is 90 degrees - and from the band anchor 9 the tensioning band 8 leads along the joined structural part 10 to a first clamping angle 15', from there Via the loop 8 ′ shown schematically in FIG. 1 to a second clamping angle 15 ′′ again on the tensioning device, that is to say between the tensioning slide 3 and the eccentric bolt 1, the tensioning strap 8 is fixed in a clamp connection therebetween.
  • the desired tension for setting the compressive forces D1 / D2 is obtained by re-tensioning the tension rod 7 by turning the tension handle 6.
  • the clamping angles 15 form a unit with the latter.
  • they also allow a tension band guide that is adequate in terms of strength, for example parallel to the workpiece. In this way harmful torques are minimized, on the other hand it is also possible to guide the belt by angles that deviate from 90 degrees.
  • the clamping part of the device is preferably applied to the existing right angle of the workpiece. If this is not possible, an adapter angle, for example 75 degrees inside to 90 degrees outside, is used. This allows constructions of different angles to be joined and fixed.
  • the parallelism of the strap loop can be brought about by using different strap anchor points in the angle leg 5 '. Slots 9a, b, c are used to pass the strap and are used depending on the dimensions of the workpiece. In the case of larger, for example square, work parts, the Winketschenke) 5 'will be too short. This would be the case if the device were used as a frame clamp. This is then solved by adding a third clamping angle 15 '', the clamping band 8 being stretched out in alignment with the angle leg 5 'to which it is fixed by the anchoring 9.
  • FIG. 3 now shows in more detail a further important application of the tensioning device, namely a version without or with an open loop.
  • the clamping device shows a 90 degree basic angle 5 applied to the workpiece 10-1, a wooden part, with a band anchor 9 not used in this case, the clamping slide 3 with the slideway 4, which slideway 4 is so laid out in comparison to FIG. 1 or 2 that it also absorbs torques caused by the pulling belt.
  • the eccentric shaft 2 on the eccentric pin 1 carries a clamping lever 12, with the aid of which the tightening strap can be easily clamped with a small handle after tightening.
  • the eccentric shaft 2 and the clamping lever 12 are made in one piece and in such a way that the entire stroke of the eccentric can be managed with no more than a 90-130 degree rotation.
  • the stroke in function of rotation must not be too steep, since otherwise the loosening of the clamp connection becomes increasingly easier and thus unintentional loosening is promoted.
  • the wooden surface H is shown without any shape-related obstacles; but it is easy to see that if, for example, the work part 10-2 alone would have twice or three times the thickness but with unchanged dimensions of the work part 10-1, the strap would be wrapped had to lead to a torque impairing the glue point 11.
  • another processing can be carried out simultaneously, for example painting or coating, for which purpose this workpiece side must of course be freely accessible.
  • FIG. 4 shows the use of the clamping device, in which the clamping band 8 wraps around the workpieces 10-1 and 10-2 to be joined, the two band anchor points 1, 3 and 9 being fixed to the basic angle 5 of the clamping device .
  • the tensioning strap 8 runs away from the strap anchor 9 in the direction of the armature leg 5, a further tensioning angle 15 being able to be provided on the deflecting workpiece edge, as is the case on the two opposite edges with the tensioning angles 15 'and 15 ".
  • the tensioning strap 8 is placed away from the strap anchor 9 via the two tensioning brackets 15 around the workpieces 10-1 and 10-2 to be joined to the eccentric clamping part 1, 2, 3 and tightened by hand Turning the tensioning handle 6 finally tightened via the tensioning rod 7.
  • This tightening is of course also to be regarded as a dosage that can be metered according to the type of connection, so it is not the case that advantages of the prior art would not be achieved with the invention explained here.
  • FIG. 5 A / B Another interesting application of the tensioning device according to the invention, which shows an insert that can hardly be managed with conventional means, is shown in FIG. 5 A / B. It is assumed that the arrangement of the tensioning device as shown in Figure 3 is not possible for any reason. At the deflection point 8 ', for example, only a narrow gap is free for the tensioning band 8 to pass through. As shown, the clamping band 8 is guided on the upper side of the workpiece from the clamping device to the opposite workpiece edge and on the lower side back to the main clamping angle 15 in order to find a hold there on the band anchor 9. As already described, the strap is tightened accordingly. The oblique running away of the tensioning band from the aligned straight line is minimized by the smallest possible lateral distance between the main tensioning angle 15 and the tensioning device.
  • FIG. 6 shows a further possible application with the main clamping angle 15 and partial, that is to say open, wrap. Two joining or gluing points 11 can be pressed with the same device. If it is now assumed that FIG. 6 shows the sectional illustration of a U-shaped channel-like workpiece made from the parts 10-1, 10-2, 10-3, these three parts of almost any length can be provided with a plurality of clamping devices which are spaced as shown are attached, held together. These manifold examples show the manifold usability of the tensioning device, whereby there are practically no limits to the applications when using a tensioning device with tensioning angles and adapter angles described above.

Abstract

A clamping device comprises an angle member carrying a clamping mechanism and a clamping band which is engaged by the clamping mechanism at one end and engages around and holds the workpieces to be joined firmly in contact with each other, and is attached, by its other end, to an anchor. The anchor may be provided on the angle member or on a tensioning angle member. To tension the band, the clamping mechanism is mounted on a slide 3 which is displaceable by a pulling means operating thereon and which comprises a screw and a nut.

Description

Die Erfindung bezieht sich auf eine Einrichtung zum Fügen von Holz- oder Metallkonstruktionen derart, daß auf die in Verbindung gebrachten Fügestellen der nötige Anpreßdruck ohne unerwünschte Verschiebungen aufbringbar ist.The invention relates to a device for joining wooden or metal structures in such a way that the necessary contact pressure can be applied to the joined joints without undesirable displacements.

Allenthalben sind beim Arbeiten an und beim Herstellen von Konstruktionen jeweils Anpreßdrücke nötig, sei es zum gemeinsamen Bearbeiten mehrerer Teilstücke, beispielsweise Durchbohren, oder zum Befestigen von Klebstellen, oder für weitere Arbeitsgänge, bei denen eine Anpressung zweier oder mehrerer Teile aneinander gewünscht ist. Bei kleineren und mittelgroßen Konstruktionen werden, insbesondere bei der Holzverarbeitung, die bekannten Schraubzwingen verwendet. Diese Schraubzwingen sind beispielsweise durch Spannmittel wiederum untereinander verbindbar zu Doppel- oder gar Mehrfachzwingen.Contact pressure is required everywhere when working on and during the manufacture of constructions, be it for joint processing of several sections, for example drilling through, or for fixing glue points, or for other work processes in which pressing two or more parts against one another is desired. The known screw clamps are used for small and medium-sized constructions, especially for wood processing. These screw clamps can be connected to one another, for example by clamping means, to form double or even multiple clamps.

Zur Bewältigung von Befestigungsaufgaben an größeren Konstruktionen sind Schraubzwingen beachtlicher Dimensionen erhältlich, deren Bakkenabstände in der Größenordnung eines Meters liegen. Dementsprechend sind diese Werkzeuge massiv, schwer und nicht zuletzt teuer; der Umgang damit ist unhandlich und erfordert zudem ein zunehmendes Maß an Körperkraft. Ferner ist das mechanische Zusammenwirken zweier oder mehrerer Schraubzwingen zu einem Kräftesystem mit zum Teil komplizierten topologischen Problemen verbunden, die nicht immer befriedigend gelöst werden können. Schließlich sind der Größe, das heißt Spannweite einer Schraubzwinge Grenzen gesetzt, so daß für bestimmte Fügeaufgaben Schraubzwingen als Spann- beziehungsweise Anpreßeinrichtung nicht mehr in Frage kommen.Screw clamps of considerable dimensions are available to cope with fastening tasks on larger constructions, the jaw spacing of which is on the order of a meter. Accordingly, these tools are massive, heavy and not least expensive; handling it is unwieldy and also requires an increasing amount of physical strength. Furthermore, the mechanical interaction of two or more screw clamps to form a force system is associated with sometimes complicated topological problems which cannot always be solved satisfactorily. Finally, there are limits to the size, that is, the span of a screw clamp, so that screw clamps as clamping or pressing devices are no longer an option for certain joining tasks.

Aus der Patentschrift GB-1 006 056 ist eine Zwinge bekannt, welche dem Festklemmen eines rahmenförmigen Körpers dient. Mittels vier Eckgliedern und einem um den Körper geführten Spannband kann ein Rahmen zusammengehalten und verklebt werden. Gespannt wird das Band mittels einem mit einem Handgriff versehenen Gewindestift, wobei durch Drehung des Handgriffes ein das Spannband haltender Spannblock bewegt und auf diese Weise das Band angespannt wird. Diese Vorrichtung hat jedoch den großen Nachteil, daß nur im wesentlichen quader- bzw. rahmenförmige Werkstücke zusammengehalten werden können, welche einen Zug zwischen allen vier Winkelelementen erfordern bzw. erlauben. Eine beispielsweise U-förmige Anordnung von drei Vierkanthölzern würde durch das geschlossene Band unweigerlich an den beiden freien Schenkelenden in unerwünschter Weise zusammengezogen. Ausserdem besitzt die Spannvorrichtung eine sehr unhandliche Einrichtung zum Festspannen des Spannbandes (Spannblock, Festhaltehebel, etc.), die im praktischen Einsatz hinderlich ist.From the patent GB-1 006 056 a clamp is known which is used to clamp a frame-shaped body. A frame can be held together and glued using four corner links and a tensioning strap that runs around the body. The strap is tensioned by means of a threaded pin provided with a handle, a tensioning block holding the tensioning strap being moved by rotation of the handle and the strap being tensioned in this way. However, this device has the major disadvantage that only essentially cuboid or frame-shaped workpieces can be held together, which require or allow a train between all four angle elements. An example of a U-shaped arrangement of three square timbers would inevitably be contracted by the closed band at the two free leg ends. In addition, the tensioning device has a very bulky device for tightening the tensioning strap (tensioning block, holding lever, etc.), which is a hindrance in practical use.

Es ist Aufgabe der Erfindung, eine Vorrichtung zu schaffen, mit der Fügearbeiten an Holz- und/ oder Metallkonstruktionen vereinfacht werden, und mit der bei größeren zu bearbeitenden Dimensionen die zu lösenden Schwierigkeiten ungleich weniger zunehmen als beim Arbeiten mit herkömmlichen Schraubzwingen.It is an object of the invention to provide a device with which joining work on wooden and / or metal structures is simplified, and with which the difficulties to be solved increase much less with larger dimensions to be machined than when working with conventional screw clamps.

Ferner ist es Aufgabe der Erfindung, eine Vorrichtung zu schaffen, die zur Bewältigung von Arbeiten bei zunehmenden Dimensionen der Konstruktion verwendbar ist, und bei der eine geringere Zahl verschieden abgestufter Werkzeuggrö- ßen nötig sind; mit anderen Worten, eine Feinabstufung des vollen Werkzeugsatzes im Vergleich zum Stand der Technik soll nicht nötig sein.Furthermore, it is an object of the invention to provide a device which can be used for handling work with increasing dimensions of the construction and in which a smaller number of differently graduated tool sizes are necessary; in other words, a fine gradation of the full tool set compared to the prior art should not be necessary.

Schließlich ist es Aufgabe der Erfindung, eine Vorrichtung zu schaffen, die vom Gewicht her leicht ist, und mit der der Arbeitsaufwand herabgesetzt werden kann.Finally, it is an object of the invention to provide a device which is light in weight and with which the amount of work can be reduced.

Die Aufgabe wird durch die im kennzeichnenden Teil der im Patentanspruch 1 angegebenen Erfindung gelöst.The object is achieved by the in the characterizing part of the invention specified in claim 1.

Anhand der nachfolgend aufgeführten Zeichnungen 3, 5 und 6 wird die Erfindung eingehend erklärt. Die Ausführungsbeispiele gemäß die Figuren 1, 2 und 4 sind vom Hauptanspruch nicht gedeckt. Die Figuren zeigen:

  • Figur 1: die Prinzipdarstellung und Funktion einer Spannvorrichtung gemäß Erfindung,
  • Figur 2: ein Anwendungsbeispiel einer Fügearbeit von zwei Werkstücken,
  • Figur 3: die Anwendung der Spannvorrichtung mit nur einem Spannwinkel und ohne Umschlingung des Werkstücks,
  • Figur 4: die Anwendung der Spannvorrichtung mit zwei Spannwinkeln und mit Umschlingung des Werkstücks,
  • Figur 5A/B: eine weitere Anwendung mit nur einem Spannwinkel und mit Umschlingung des Werkstücks,
  • Figur 6: eine weitere Anwendung mit nur einem Spannwinkel und mit teilweiser Umschlingung des Werkstücks.
The invention is explained in detail with reference to the drawings 3, 5 and 6 listed below. The exemplary embodiments according to FIGS. 1, 2 and 4 are not covered by the main claim. The figures show:
  • FIG. 1: the basic illustration and function of a tensioning device according to the invention,
  • FIG. 2: an application example of joining work of two workpieces,
  • FIG. 3: the use of the clamping device with only one clamping angle and without wrapping the workpiece,
  • FIG. 4: the use of the clamping device with two clamping angles and with wrapping around the workpiece,
  • FIG. 5A / B: a further application with only one clamping angle and with wrapping around the workpiece,
  • Figure 6: another application with only one clamping angle and with partial wrapping of the workpiece.

Das Funktionsprinzip der Vorrichtung gemäß Erfindung ist in der Figur 1 in schematischer Darstellung festgehalten. Die zu fügenden Konstruktionsteile werden mit einem Spannband 8 umschlungen; mit 8' ist eine beliebige Umschlingung angegeben. Innerhalb der Umschlingung befindet sich der Teil der Konstruktion 10, auf den der gewünschte Anpreßdruck ausgeübt werden soll. In Figur 1 sind dies die Füge- oder Werkteile 10-1 und 10-2, dazwischen ist beispielsweise eine Klebestelle 11 während einer bestimmten Klebzeit zu fixieren. Auf die Klebestelle wirken die gewünschten Druckkräfte D1 und D2. In Richtung Z ist die Spannbandschlinge 8' unter Zug, das Spannband 8 bzw. dessen zwei Enden sind am Winkel 5 auf zwei verschiedene Weisen fixiert. Im oberen Teil der Figur 1 ist das Spannband 8 zwischen einem Spannschlitten 3 und einem Exzenterbolzen 1 hindurchgeführt. Der Exzenterbolzen 1 ist um eine Exzenterwelle 2 schwenkbar angeordnet. Ohne Widerstand aufschwenken lässt sich der Exzenterbolzen, wenn am freien Ende des Spannbandes gezogen wird; in die andere Richtung wird das Band bei zunehmender Kraft immer stärker zwischen dem Spannschlitten 3 und dem Exzenterbolzen 1 eingeklemmt. Eine Vorspannung auf die Werkteile 10-1 und 10-2 erreicht man durch einfaches Ziehen am freien, von der Spannschlitten/Exzenterbolzen-Klemmstelle weglaufenden Bandende. Ein definitives Nachspannen erfolgt durch Zurückfahren des Spannschlittens 3 mit Hilfe der Gewindestange 7, die in Zugrichtung Z durch mit Hilfe der Gewindestange 7, die in Zugrichtung Z durch Drehen an einem Spanngriff in die gewünschte Spannung gebracht werden kann. Die Gleitbahn zwischen dem Spannschlitten 3 und dem Winkelteil 5 ist so ausgestaltet, daß ein Verklemmen durch ein eventuell auftretendes Drehmoment vermieden wird. Die Gegenverankerung des Spannbandes 8 ist mit gewissem Abstand mittels eines Bandankers 9 auf derselben Seite des Winkels 5 vorgesehen.The principle of operation of the device according to the invention is shown in FIG. 1 in a schematic representation. The construction parts to be joined are wrapped with a tensioning strap 8; any wrap is indicated by 8 '. Within the loop is the part of the construction 10 on which the desired contact pressure is to be exerted. In FIG. 1, these are the joining or work parts 10-1 and 10-2, in between an adhesive point 11, for example, is to be fixed during a certain adhesive time. The desired pressure forces D1 and D2 act on the glue point. In the direction Z the tension band loop 8 'is under tension, the tension band 8 or its two ends are fixed to the angle 5 in two different ways. In the upper part of FIG. 1, the tensioning strap 8 is passed between a tensioning slide 3 and an eccentric bolt 1. The eccentric pin 1 is arranged pivotably about an eccentric shaft 2. The eccentric bolt can be swung open without resistance if the free end of the tensioning strap is pulled; in the other direction, the tape becomes stronger and stronger between the tensioning slide 3 and the eccentric pin 1 pinched. Preloading on workpieces 10-1 and 10-2 is achieved by simply pulling on the free end of the belt that runs away from the clamping slide / eccentric pin clamping point. A definite re-tensioning takes place by retracting the tensioning slide 3 with the help of the threaded rod 7, which can be brought into the desired tension in the pulling direction Z by means of the threaded rod 7, which can be brought in the pulling direction Z by turning a tensioning handle. The slideway between the tensioning slide 3 and the angle part 5 is designed in such a way that jamming due to a possibly occurring torque is avoided. The counter anchorage of the tensioning strap 8 is provided at a certain distance by means of a strap anchor 9 on the same side of the angle 5.

Die Vorrichtung soll für möglichst viele Abmessungen von Füge- oder Werkteilen verwendbar sein. Dazu sind folgende Maße zu variieren: die Länge des Spannbandes und der Abstand des Bandankers 9 am Winkelschenkel 5' vom Winkelschenkel 5", mit anderen Worten, der Parallelabstand des bei 9 verankerten Spannbandendes 8 mit dem Winkelschenkel 5". Bei der Realisierung der anhand von Figur 1 gezeigten und nur in seinem Funktionsprinzip, nicht aber in seiner Ausführung gezeigten Spannvorrichtung gemäß Erfindung ist es wichtig, durch geeignete Bemessung schädliche Drehmomente zu minimieren oder gar zu vermeiden. Der durch die Bandspannvorrichtung bewirkte geschlossene Kraftwirkungskreis soll auf die Werkteile möglichst solche Kräfte anlegen, die mit der Hauptfaser der zusammengepreßten Werkteile im wesentlichen zusammenfallen.The device should be usable for as many dimensions of joining or work parts as possible. For this purpose, the following dimensions are to be varied: the length of the tension band and the distance of the band anchor 9 on the angle leg 5 'from the angle leg 5 ", in other words, the parallel distance of the tension band end 8 anchored at 9 with the angle leg 5". When realizing the tensioning device according to the invention shown with reference to FIG. 1 and only shown in its functional principle, but not in its embodiment, it is important to minimize or even avoid harmful torques by suitable dimensioning. The closed force action circuit caused by the belt tensioning device should, if possible, apply forces to the workpieces which essentially coincide with the main fiber of the compressed workpieces.

Figur 2 zeigt nun eine Anwendung, bei der zwei Werkteile an der Stelle 11 miteinander verklebt wurden und während der Klebzeit gegeneinander fixiert sind. Die beiden gefügten Werkteile 10-1 und 10-2 weisen zusammen eine prismatische Form mit vier rechtwinkligen Kantenteilen auf. An einen Kantenteil ist ein Teil der Vorrichtung gemäß Erfindung mit den Winkelschenkein 5' und 5" angelegt - der Grundwinkel 5 beträgt 90 Grad - und von der Bandverankerung 9 führt das Spannband 8 entlang dem gefügten Konstruktionsteil 10 auf einen ersten Spannwinkel 15', von dort über die in Figur 1 schematisch dargestellte Schlaufe 8' auf einen zweiten Spannwinkel 15" wieder auf die Spannvorrichtung, das heisst, zwischen Spannschlitten 3 und Exzenterbolzen 1, dazwischen das Spannband 8 in einer Klemmverbindung fixiert ist. Den gewünschten Zug zum Einstellen der Druckkräfte D1/D2 erhält man durch Nachspannen an der Spannstange 7 mittels Drehen am Spanngriff 6.Figure 2 now shows an application in which two workpieces were glued together at point 11 and are fixed against each other during the gluing time. The two joined parts 10-1 and 10-2 together have a prismatic shape with four right-angled edge parts. A part of the device according to the invention with the angle legs 5 'and 5 "is applied to an edge part - the basic angle 5 is 90 degrees - and from the band anchor 9 the tensioning band 8 leads along the joined structural part 10 to a first clamping angle 15', from there Via the loop 8 ′ shown schematically in FIG. 1 to a second clamping angle 15 ″ again on the tensioning device, that is to say between the tensioning slide 3 and the eccentric bolt 1, the tensioning strap 8 is fixed in a clamp connection therebetween. The desired tension for setting the compressive forces D1 / D2 is obtained by re-tensioning the tension rod 7 by turning the tension handle 6.

Die Spannwinkel 15 bilden in einer speziellen Ausführungsform der Vorrichtung gemäß Erfindung mit dieser eine Einheit. Sie erlauben nebst ihren Umlenkeigenschaften wie Bandgleiten, Bandschutz auch eine kräftemäßig adäquate Spannbandführung beispielsweise parallel zum Werkstück. Auf diese Weise werden schädliche Drehmomente minimiert, andererseits ist damit auch eine Bandführung um Winkel, die von 90 Grad abweichen, möglich. Vorzugsweise wird der Spannteil der Vorrichtung am vorhandenen rechten Winkel des Werkstücks angelegt, ist dies nicht möglich, so wird ein Adapterwinkel beispielsweise 75 Grad-innen-zu- 90 Grad-aussen verwendet. Dies erlaubt Konstruktionen verschiedener Winkel zu fügen und fixieren.In a special embodiment of the device according to the invention, the clamping angles 15 form a unit with the latter. In addition to their deflecting properties such as belt sliding and belt protection, they also allow a tension band guide that is adequate in terms of strength, for example parallel to the workpiece. In this way harmful torques are minimized, on the other hand it is also possible to guide the belt by angles that deviate from 90 degrees. The clamping part of the device is preferably applied to the existing right angle of the workpiece. If this is not possible, an adapter angle, for example 75 degrees inside to 90 degrees outside, is used. This allows constructions of different angles to be joined and fixed.

Die Parallelität der Spannbandschlaufe, sofern dies nötig ist, im Beispiel nach Figur 2 ist dies vorgesehen, läßt sich durch Benutzung verschiedener Bandankerstellen im Winkelschenkel 5' herbeiführen. Schlitze 9a, b, c dienen zum Durchführen des Spannbandes und werden je nach Abmessung des Werkteils benützt. Bei größeren, beispielsweise quadratischen Werkteilen wird der Winketschenke) 5' zu kurz sein. Dies wäre der Fall, wenn die Vorrichtung als Rahmenspanner eingesetzt würde. Gelöst wird dies dann durch Hinzunahme eines dritten Spannwinkels 15"', wobei das Spannband 8 zum Winkelschenkel 5', an dem es durch die Verankerung 9 fixiert ist, fluchtend ausgespannt ist.The parallelism of the strap loop, if this is necessary, in the example according to FIG. 2 this is provided, can be brought about by using different strap anchor points in the angle leg 5 '. Slots 9a, b, c are used to pass the strap and are used depending on the dimensions of the workpiece. In the case of larger, for example square, work parts, the Winketschenke) 5 'will be too short. This would be the case if the device were used as a frame clamp. This is then solved by adding a third clamping angle 15 '', the clamping band 8 being stretched out in alignment with the angle leg 5 'to which it is fixed by the anchoring 9.

Weitere Applikationen, welche durch Schraubzwingen nicht mehr gelöst werden können, sind solche, in denen das Spannband 8 bei «Werkteil- hindernissen" durch besonders vorgesehene Spannbandschlitze hindurch statt herumgeführt wird. Dies erlaubt Fügearbeiten, die bisher nur mit großem Aufwand bewältigt werden konnten.Further applications, which can no longer be solved by screw clamps, are those in which the tension band 8 is guided through specially provided tension band slots instead of around in the case of “workpiece obstacles ” . This allows joining work which could previously only be accomplished with great effort.

Figur 3 zeigt jetzt in mehr detaillierter Darstellung eine weitere wichtige Anwendungsform der Spannvorrichtung, nämlich eine Version ohne bzw. mit offener Umschlingung. Die Spannvorrichtung zeigt einen an das Werkstück 10-1, ein Holzteil, angelegten 90 Grad Grundwinkel 5 mit einem in diesem Falle nicht benutzten Bandanker 9, dem Spannschlitten 3 mit der Gleitbahn 4, welche Gleitbahn 4 im Vergleich zu Figur 1 oder 2 so angelegt ist, daß sie ebenfalls vom ziehenden Band bewirkte Drehmomente aufnimmt. Die Exzenterwelle 2 auf dem Exzenterbolzen 1 trägt einen Klemmhebel 12, mit dessen Hilfe das Spannband nach dem Festziehen mit einem kleinen Handgriff leicht festgeklemmt werden kann. Vorteilhafterweise werden Exzenterwelle 2 und Klemmhebel 12 einstükkig ausgeführt und zwar so, daß der gesamte Hub des Exzenters mit nicht mehr als einer 90-130 Grad Drehung bewältigt werden kann. Allerdings darf der Hub in Funktion zu Drehung nicht zu steil verlaufen, da sonst das Lösen der Klemmverbindung zunehmend leichter und damit ein unbeabsichtigtes Lösen begünstigt wird.Figure 3 now shows in more detail a further important application of the tensioning device, namely a version without or with an open loop. The clamping device shows a 90 degree basic angle 5 applied to the workpiece 10-1, a wooden part, with a band anchor 9 not used in this case, the clamping slide 3 with the slideway 4, which slideway 4 is so laid out in comparison to FIG. 1 or 2 that it also absorbs torques caused by the pulling belt. The eccentric shaft 2 on the eccentric pin 1 carries a clamping lever 12, with the aid of which the tightening strap can be easily clamped with a small handle after tightening. Advantageously, the eccentric shaft 2 and the clamping lever 12 are made in one piece and in such a way that the entire stroke of the eccentric can be managed with no more than a 90-130 degree rotation. However, the stroke in function of rotation must not be too steep, since otherwise the loosening of the clamp connection becomes increasingly easier and thus unintentional loosening is promoted.

Die der Klemmeinrichtung gegenüberliegende Zugverankerung 9 am Hauptspannwinkel 15, anstelle des nicht benützten Bandankers 9 am Winkel 5 der Spannvorrichtung erlaubt nun auf die Werkstücke Anpreßkräfte zu applizieren, ohne daß eine Umschlingung notwendig ist. In diesem Beispiel ist die Holzoberfläche H ohne formbedingte Hindernisse dargestellt; doch ist leicht einzusehen, daß wenn bspw. allein der Werkteil 10-2 doppelte oder dreifache Dicke aber bei unveränderten Abmessungen des Werkteils 10-1 aufweisen würde, eine Umschlingung des Spannbandes zu einem die Klebestelle 11 beeinträchtigendem Drehmoment führen mußte. Andererseits kann auf der mit H bezeichneten Seite bspw. eine andere Bearbeitung simultan durchgeführt werden, zum Beispiel Malen oder Beschichten, wozu diese Werkstückseite natürlich frei zugänglich sein muß. Nicht zuletzt wäre es auch denkbar, daß eine Umschlingung gar nicht möglich sein würde, wenn beispielsweise die mit H bezeichnete Fläche rechtwinklig an eine Wand anstößt. So gibt es mannigfache Applikationen der Spannvorrichtung, die aus den oben angedeuteten Gründen ein Zurückführen des Spannbandes auf die Spannvorrichtung nicht zulassen; für diese Applikationen ist die Ausführungsform mit einem Hauptspannwin- kel 15, der mit einem Bandanker 9 versehen ist, vorgesehen. Des weitern soll mit Hilfe der Figur 3 noch gezeigt werden, daß die Spannvorrichtung in jeder beliebigen Lage zur Schwerkraft benützt und bei Mithilfe einer weiteren Person auch montiert werden kann. Darin sind der Applikation auch keine Grenzen gesetzt.The tension anchor 9 opposite the clamping device at the main clamping angle 15, instead of the unused band anchor 9 at the angle 5 of the clamping device, now allows contact forces to be applied to the workpieces without the need for looping. In this example, the wooden surface H is shown without any shape-related obstacles; but it is easy to see that if, for example, the work part 10-2 alone would have twice or three times the thickness but with unchanged dimensions of the work part 10-1, the strap would be wrapped had to lead to a torque impairing the glue point 11. On the other hand, on the side labeled H, for example, another processing can be carried out simultaneously, for example painting or coating, for which purpose this workpiece side must of course be freely accessible. Last but not least, it would also be conceivable that wrapping would not be possible if, for example, the surface denoted by H abuts a wall at right angles. There are various applications of the tensioning device which, for the reasons indicated above, do not allow the tensioning band to be returned to the tensioning device; for these applications, the embodiment is provided with a Hauptspannwin - kel 15, which is provided with a belt anchor 9 is provided. Furthermore, it should be shown with the help of FIG. 3 that the tensioning device can be used in any position for gravity and can also be installed with the help of another person. There are no limits to the application.

Ähnlich wie in Figur 2 schematisch dargestellt, zeigt Figur 4 die Anwendung der Spannvorrichtung, bei der das Spannband 8 die zu fügenden Werkstücke 10-1 und 10-2 umschlingt, wobei die beiden Bandankerpunkte 1, 3 und 9 am Grundwinkel 5 der Spannvorrichtung fixiert sind. Unterschiedlich zu Fig. 2 läuft das Spannband 8 vom Bandanker 9 in Richtung des Ankerschenkels 5 weg, wobei an der umlenkenden Werkstückkante ein weiterer Spannwinkel 15 vorgesehen sein kann, wie dies an den beiden Gegenkanten mit den Spannwinkeln 15' und 15" der Fall ist. So wird also das Spannband 8 vom Bandanker 9 weg über die beiden Spannwinkel 15 um die zu fügenden Werkteile 10-1 und 10-2 zum Exzenter-Klemmteil 1, 2, 3 gelegt und von Hand angezogen. Das Spannband sitzt nun fest und wird durch Drehen am Spanngriff 6 über die Spannstange 7 endgültig angezogen. Dieses Festziehen ist natürlich auch als ein entsprechend der Verbindungsart dosierbares anzusehen; es ist also nicht so, daß Vorteile des Standes der Technik mit der hier erläuterten Erfindung nicht erreicht würden.Similar to that shown schematically in FIG. 2, FIG. 4 shows the use of the clamping device, in which the clamping band 8 wraps around the workpieces 10-1 and 10-2 to be joined, the two band anchor points 1, 3 and 9 being fixed to the basic angle 5 of the clamping device . In contrast to FIG. 2, the tensioning strap 8 runs away from the strap anchor 9 in the direction of the armature leg 5, a further tensioning angle 15 being able to be provided on the deflecting workpiece edge, as is the case on the two opposite edges with the tensioning angles 15 'and 15 ". Thus, the tensioning strap 8 is placed away from the strap anchor 9 via the two tensioning brackets 15 around the workpieces 10-1 and 10-2 to be joined to the eccentric clamping part 1, 2, 3 and tightened by hand Turning the tensioning handle 6 finally tightened via the tensioning rod 7. This tightening is of course also to be regarded as a dosage that can be metered according to the type of connection, so it is not the case that advantages of the prior art would not be achieved with the invention explained here.

Eine weitere interessante Anwendung der Spannvorrichtung gemäß Erfindung, die einen Einsatz zeigt, der mit herkömmlichen Mitteln kaum bewältigt werden kann, ist in Figur 5 A/B dargestellt. Es sei angenommen, daß aus irgendweichen Gründen die Anordnung der Spannvorrichtung wie in Figur 3 gezeigt nicht möglich ist. An der Umlenkstelle 8' ist bspw. nur ein schmaler Spalt zum Durchführen des Spannbandes 8 frei. Wie gezeigt wird das Spannband 8 auf der Oberseite des Werkstücks von der Spannvorrichtung zur gegenüberliegenden Werkstückkante hin- und auf der Unterseite zum Hauptspannwinkel 15 zurückgeführt, um dort am Bandanker 9 Halt zu finden. Wie schon beschrieben, wird das Spannband entsprechend festgezogen. Das schräge Weglaufen des Spannbandes von der fluchtenden Geraden wird durch einen möglichst kleinen seitlichen Abstand zwischen Hauptspannwinkel 15 und Spannvorrichtung minimiert.Another interesting application of the tensioning device according to the invention, which shows an insert that can hardly be managed with conventional means, is shown in FIG. 5 A / B. It is assumed that the arrangement of the tensioning device as shown in Figure 3 is not possible for any reason. At the deflection point 8 ', for example, only a narrow gap is free for the tensioning band 8 to pass through. As shown, the clamping band 8 is guided on the upper side of the workpiece from the clamping device to the opposite workpiece edge and on the lower side back to the main clamping angle 15 in order to find a hold there on the band anchor 9. As already described, the strap is tightened accordingly. The oblique running away of the tensioning band from the aligned straight line is minimized by the smallest possible lateral distance between the main tensioning angle 15 and the tensioning device.

Figur 6 zeigt eine weitere Anwendungsmöglichkeit mit Hauptspannwinkel 15 und teilweiser, also offener Umschlingung. Zwei Füge- oder Klebestellen 11 können mit derselben Vorrichtung gepreßt werden. Wird nun angenommen, daß Figur 6 die geschnittene Darstellung eines U-förmigen känelartigen Werkstücks aus den Teilen 10-1, 10-2, 10-3 zeigt, so können diese drei Teile von beinahe beliebiger Länge mit mehreren Spannvorrichtungen, die in Abständen wie gezeigt befestigt sind, zusammengehalten werden. An diesen wenigen Beispielen ist die mannigfaltige Verwendbarkeit der Spannvorrichtung gezeigt, wobei den Applikationen bei Verwendung von Spannvorrichtung mit Spannwinkeln und oben beschriebenen Adapterwinkeln praktisch keine Grenzen gesetzt sind. Die gezeigte Ausführungsform mit Exzenterklemme, Spannschlitten, Spanngriff/Spannstange, Spannband und Bandanker, läßt sich in gewissen Grenzen abwandeln ohne daß dabei vom erfinderischen Gedanken abgewichen wird. Entweder werden geschlossene Umschlingungen des Werkstücks mit oder ohne Spannwinkel oder teilweise, also offene Umschlingungen mit Spannwinkeln angewendet, wobei diese Umschlingungen durch ein festziehbares Spannband, welches aus textilem oder metallischem, geflochtenem oder festem Material bestehen kann, bewerkstelligt wird.FIG. 6 shows a further possible application with the main clamping angle 15 and partial, that is to say open, wrap. Two joining or gluing points 11 can be pressed with the same device. If it is now assumed that FIG. 6 shows the sectional illustration of a U-shaped channel-like workpiece made from the parts 10-1, 10-2, 10-3, these three parts of almost any length can be provided with a plurality of clamping devices which are spaced as shown are attached, held together. These manifold examples show the manifold usability of the tensioning device, whereby there are practically no limits to the applications when using a tensioning device with tensioning angles and adapter angles described above. The embodiment shown with eccentric clamp, tensioning slide, tensioning handle / tensioning rod, tensioning strap and strap anchor can be modified within certain limits without deviating from the inventive idea. Either closed wraps of the workpiece with or without a clamping angle or partially, i.e. open wraps with clamping angles, are used, these wraps being brought about by a tightenable tensioning band, which can be made of textile or metallic, braided or solid material.

Claims (4)

1. A device for joining wooden or metal constructions with a tensioning device for a tightening strap (8) surrounding at least in part one of the parts to be joined, and at least one tightening angle piece (15), characterised in that one end of the tightening strap (8) is fixed to one main tightening angle piece (15) by a connection (9) acting as a band fixing device, and in that the tightening strap (8) passes at the other end through a clamping device (2, 3) to a separate angle element (5).
2. A device according to claim 1, characterised in that the angle element (5) and the tightening angle pieces (15) have different face angles.
3. A device according to claim 1 or 2, characterised by additional adapter angle pieces for the angle element (5) and/or the tightening angle pieces (15) which align these with their internal right angles to the different face angles.
4. A device according to claims 1 to 3, characterised in that the clamping device has a tightening slot which can be moved via a tightening rod (7) and associated tightening handle (6), with an eccentric shaft (2) and an eccentric bolt for fixing the tightening strap (8).
EP84102399A 1983-03-10 1984-03-06 Device for assembling wood and metal constructions Expired EP0121770B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102399T ATE46646T1 (en) 1983-03-10 1984-03-06 DEVICE FOR JOINING WOOD AND METAL STRUCTURES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1431/83 1983-03-10
CH143183 1983-03-10

Publications (3)

Publication Number Publication Date
EP0121770A2 EP0121770A2 (en) 1984-10-17
EP0121770A3 EP0121770A3 (en) 1986-01-15
EP0121770B1 true EP0121770B1 (en) 1989-09-27

Family

ID=4210302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102399A Expired EP0121770B1 (en) 1983-03-10 1984-03-06 Device for assembling wood and metal constructions

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US (1) US4572491A (en)
EP (1) EP0121770B1 (en)
AT (1) ATE46646T1 (en)
DE (1) DE3479873D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701393A1 (en) * 1987-01-20 1988-07-28 Robert Wolff FRAME CLAMPING DEVICE, ESPECIALLY FOR FRAME-CUT FRAME
US4932641A (en) * 1988-02-25 1990-06-12 Thomas Michael D Variable force exerting clamp assembly having a variable clamping area
US4861009A (en) * 1988-02-25 1989-08-29 Thomas Michael D Variable force exerting clamp assembly having a variable clamping area
US5474631A (en) * 1994-05-09 1995-12-12 Northrop Grumman Corporation Tension bonding process

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190204636A (en) * 1902-02-24 1902-04-10 John Tindal Improvements in Cramps for use in Making Picture Frames, Furniture and Built-up Articles generally
US1117662A (en) * 1913-08-07 1914-11-17 William T A Faulkner Chain clamp.
US2753902A (en) * 1953-01-19 1956-07-10 George B Klee Screw actuated rectangular frame work clamp
US3099301A (en) * 1958-08-29 1963-07-30 Henry M Bennett Method of peg bundling and straightening lumber
GB877476A (en) * 1959-10-19 1961-09-13 Henry Graham Higgins Band clamp
GB1006056A (en) * 1963-07-17 1965-09-29 John Galpin Improvements in and relating to clamps or cramps
US3610612A (en) * 1969-07-30 1971-10-05 Clifford H Day Picture-framing clamp
US4027866A (en) * 1975-12-29 1977-06-07 Arthur Ruggiero Multi-face clamp for manufacturing or regluing of drawers, chairs or the like
US4047710A (en) * 1976-12-07 1977-09-13 John Wilson Framing form and clamp
US4163547A (en) * 1978-02-21 1979-08-07 Jerome Henry M Clamping apparatus for assembling picture frames
DE2851128A1 (en) * 1978-11-25 1980-06-04 Fischer Geb Chevalier Ursula Support for fragile thin walled vessel - has V=shaped groove lined with leather or rubber and retaining strap
GB2118891B (en) * 1982-03-05 1986-10-08 Ian Robert Haslam Flexible band clamp or wrench

Also Published As

Publication number Publication date
EP0121770A3 (en) 1986-01-15
ATE46646T1 (en) 1989-10-15
DE3479873D1 (en) 1989-11-02
US4572491A (en) 1986-02-25
EP0121770A2 (en) 1984-10-17

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