WO2004020843A1

WO2004020843A1 - Arrangement of two profile bars that can be fastened to each other by means of a connecting member

Info

Publication number: WO2004020843A1
Application number: PCT/AT2003/000243
Authority: WO
Inventors: Augustin Rauch
Original assignee: Ströhle, Gerhard
Priority date: 2002-08-28
Filing date: 2003-08-26
Publication date: 2004-03-11
Also published as: AU2003257224A1

Abstract

Disclosed is an arrangement of two profile bars (1, 2) that can be fastened to each other by means of a connecting member. Said connecting member (3) comprises a tenon (4) and a base member (6) which is connected thereto via a collar (5). The tenon (4) grips behind an undercut groove (12) of the first profile bar (1) in the assembled state. The base member (6) is disposed in an undercut groove (12) of the second profile bar (2) and can be braced via a fastening device. Said fastening device can be displaced from an open position in which the base member (6) can be inserted into and removed from a groove (12) of the second profile bar (2) and a locked position in which the base member (6) is braced within the groove (12) of the second profile bar (2). The fastening device (8) is provided with at least one knife (7, 7') or clamping element (7`) that is used for bracing and cuts into a material of the second profile bar (2), which surrounds the groove, or adheres in a frictionally engaged manner to the material surrounding the groove (12) in the locked position.

Description

Arrangement of two profile bars that can be attached to each other with a connector

The present invention relates to an arrangement of two profile bars which can be fastened to one another with a connector, in which the connector has a slot nut and a base body connected thereto via a neck, the slot nut engaging behind an undercut groove of the first profile bar in the installed state and the base body in an undercut slot Groove of the second profile bar is arranged and clamped via a fastening device, the fastening device between an open position in which the base body can be inserted into and removed from a groove of the second profile bar, and a closed position in which the base body in the groove of the second profile bar is tense, is adjustable.

Profile bars are mainly used in industry to build a wide variety of scaffolds. Such arrangements are particularly common in plant engineering. The general task here is to connect the individual profile bars, which are usually made of aluminum, in such a way that, on the one hand, there is a solid and permanent overall construction and, on the other hand, the assembly, dismantling and conversion of such a construction can be implemented as quickly as possible. In the prior art, various types of connectors are known for this purpose, which are usually anchored with a sliding block in a groove of one profile bar and inserted with a base body into the other profile bar. In the prior art, the connector and thus the two profile bars are usually braced by means of screws or bolts which are arranged in specially designed bores and which are used as fastening means. These connectors known from the prior art, however, have the disadvantage that, for their application, bores or millings that have to be arranged very precisely usually have to be made in the profile bars, which both lengthens the assembly time and limits the recyclability of the profile bars.

In order to be able to avoid these bores or millings in the profile bars, it is also known, for example from DE 199 20 489 A1, to use profile connectors, the holding arms of which are inserted into the profiles to be connected, in order to subsequently establish a frictional connection there. The disadvantage of this profile connector, however, is that after the individual are plugged together Profile bars a simple and non-destructive loosening or disassembly is no longer possible.

EP 0 570 668 A1 shows a profile connector in which a driver of a turnbuckle can snap into a recess in the hollow profile. The disadvantage here is that a corresponding recess in the hollow profile must be provided at the corresponding point.

In the exemplary embodiment according to FIGS. 6 to 8, EP 0 490 086 A1 discloses a connector with two screws and a base body and a sliding block, this arrangement having to be pushed into the profile bars in the loosely screwed state. Then a wedge-shaped element is pressed under the countersunk head of the other screw with the help of a clamping screw, which results in the sliding block being braced against the base body. The connector shown consists of a large number of individual parts, which are only loosely connected to one another during assembly, which entails considerable assembly effort.

The object of the present invention is therefore to create a generic arrangement in which the above-mentioned disadvantages of the prior art are avoided.

This is achieved according to the invention in that the fastening device for tensioning has at least one knife or clamping element which, in the closed position, cuts into a material of the second profile bar surrounding the groove, or has a frictional adhesion to the material surrounding the groove.

In this way, according to the invention, a stable, but also easily detachable connection between the profile bars is created, which allows both a quick and easy assembly and a non-destructive disassembly of the structure constructed from profile bars. In the closed position, the at least one knife or clamping element of the fastening device is cut into the material surrounding the groove or pressed frictionally against the material surrounding the groove in such a way that a stable and secure connection is created. By pulling the knife back into the open position, this connection is made released again, whereby the entire connector can be pulled out of the profile bar in a simple manner. Both the profile bars and the connectors can then be used again for new constructions.

Particularly durable connections of the profile bars can be achieved if the fastening device has two or more knives. In order to achieve a simple bracing of the profiled bars against each other, various favorable design variants provide that the knife (s) can be displaced relative to the base body when the fastening device is switched from the open position to the closed position and vice versa in the longitudinal direction of the groove of the second profiled bar. As a result of the relative movement between the base body and the knife, the base body is moved away from the first profile bar when the fastening device is moved into the closed position, as a result of which the first and the second profile bar are braced against one another. In a special embodiment variant, it is provided that the knife (s) cut (cut) into the material of the second profile bar surrounding the slot in one direction of movement towards the slot nut.

There are different variants for executing this movement of the knife or knives. One provides that the knife (s) is (are) arranged on an eccentric that is rotatable with the actuating element.

In other variants, it is provided that the knife or the clamping element can be displaced relative to at least one wedge-shaped element between the open position and the closed position.

The wedge-shaped element is a simple but stable and very reliable way of moving the knife or clamping element and locking it in the closed position. It then also allows the clamping element or knife to be unlocked and pulled back in a simple manner.

Using a wedge-shaped element, a first embodiment provides that a clamping element is designed as a ring with a roughened or knife-like surface structure. The ring is moved outwards in the direction of the groove from the wedge-shaped element when the fastening device is moved from the open position into the closed position, depending on the Formation of its surface structure cuts into the material of the profile bar surrounding the groove or adheres to it in a frictional manner.

An alternative variant provides for a knife to be displaceable along a wedge-shaped element fixedly arranged in the base body. In this case, the knife is pushed along a wedge-shaped element fixedly connected to the base body during the adjustment from the open position into the closed position and cuts into the material surrounding the groove in the closed position. Here too, a frictional connection can be provided instead of the incision.

A further exemplary embodiment provides that the knife or the clamping element is guided in a recess of a transmission lever of the fastening device with at least two side walls which are oblique to the longitudinal direction of the base body, the side walls forming the boundary of the recess facing the sliding block and opposite in this respect. Here again, it is particularly favorable if the inclined side walls are essentially V-shaped.

In the case of design variants with at least two knives or clamping elements and at least two wedge-shaped elements per connector, a particularly stable connection is achieved in the closed position, it being advantageously provided that both at least two knives or clamping elements as well as at least two wedge-shaped elements, preferably each, are symmetrical are arranged to a longitudinal axis of the base body.

In order to be able to carry out the assembly of a structure from different profiled bars as quickly and easily as possible, it is the object of a further aspect of the invention to provide a generic arrangement in which the connectors are used between the open and closed positions of the without the use of tools Fastening device can be adjusted.

This is in turn achieved in that the fastening device has a manually actuable actuating element with which it can be used between a

Open position in which the base body can be inserted into and removed from a groove of the second profile bar, and a closed position in which the Base body is clamped in the groove of the second profile bar, is adjustable. In a particularly favorable variant, it is again provided that the actuating element has a lever which can be pivoted between two end positions, one end position being reached in the open position of the fastening device and the second end position being in the closed position of the fastening device.

Further features and details of the present invention result from the following description of the figures. It shows:

1 shows a first simple exemplary embodiment according to the invention,

2 shows a second exemplary embodiment according to the invention with a preferred connector,

3 shows a longitudinal section through that shown in FIG

Embodiment,

4a and 4b the connector shown in Fig. 2 in two perspective

views

5 shows a vertical section along the axis B-B from FIG. 4a,

Fig. 6 and Fig. 8 horizontal sections along the line A-A in Fig. 3, and

Fig. 7 and Fig. 9 detailed representations of Figs. 6 and 8.

Fig. 10a shows a third embodiment of an inventive

Connector in a side view,

10b shows a top view of the third exemplary embodiment,

10c is a sectional side view of the third

Embodiment,

11a shows the third embodiment in a side view in

Open position,

11b shows the third embodiment in a section

Side view in open position,

12 shows an arrangement according to the invention with the connector of the third exemplary embodiment,

13 is a plan view of the arrangement shown in FIG. 12 in a partially sectioned illustration,

Fig. 14a a fourth embodiment of an inventive

Connector in a side view,

14b the fourth embodiment in a top view, 14c the fourth embodiment in a sectional side view,

15a the fourth embodiment in a side view in the open position,

15b the fourth embodiment in a sectional side view in the open position,

16 shows an arrangement according to the invention with the connector of the fourth exemplary embodiment,

17a and 17b are top views of the arrangement shown in FIG. 16 in a partially sectioned illustration,

Fig. 18 is a front view of the second profile bar with an inserted connector, Fig. 19a shows a fifth embodiment of an inventive

Connector in a side view,

19b is a plan view of the fifth embodiment,

19c is a sectional side view of the fifth

Embodiment,

20a shows the fifth embodiment in a side view in the open position,

20b the fifth embodiment in a sectional side view in the open position,

21a is a perspective view of the fifth embodiment in the open position,

Fig. 21b is a perspective view of the fifth embodiment in the closed position and

22 shows a connector with additional profiled contact surfaces on the sliding block.

In the first exemplary embodiment shown in FIG. 1, the profile bars 1, 2 are connected to one another at an angle α of 90 ° by the connector 3. For this purpose, the base body 6 of the connector 3 is inserted into an undercut groove 12, the fastening device 8 being in the open position shown here. For connection to the first profile bar 1, the sliding block 4, which is connected to the base body 6 of the connector 3 via the neck 5, is introduced into the undercut groove 12 of the first profile bar 1. This can be done by Push in on one end of the profile rod 1. Alternatively, the second profile bar 2 together with the connector 3 can be rotated by 90 ° along the axis EE relative to the first profile bar 1 and in this position can be inserted into the opening 24 of the groove 12 of the first profile bar 1 (not visible in FIG. 1). By turning the profile rod 2 back with the connector 3, the sliding block 4 engages behind the shoulders 13 of the groove 12 of the profile rod 1, so that it cannot be pulled out of the groove 12 in this position.

The first profile bar 1 is braced against the second profile bar 2 by moving the fastening device 8 from the open position shown in FIG. 1 to the closed position by tilting the lever 10 in the direction 9. For this purpose, the lever 10 can be inserted through the opening 24 of the groove 12 of the second profile rod 2, which is likewise not visible in this illustration, into a slot-like recess 22 or a recess 22. By moving the lever 10 in the direction 9, the knife 7 of the fastening device 8 is rotated in the direction 23, whereby it cuts into the central rod 14 of the second profile rod 2 and at the same time moves the entire connector 3 in the direction 9. As a result, the sliding block 4 is pressed against the shoulders 13 of the first profile bar 1, whereby the first profile bar 1 and the second profile bar 2 are pressed against one another, and a non-slip fastening of the second profile bar 2 to the first profile bar 1 is achieved. When the closed position (not shown here) is reached, the knife 7 is cut into the central rod 14 in such a way that the base body 6 is pressed frictionally against the shoulders 13 of the groove 12 of the second profiled rod 2, which means that the bracing of the first Profile bar 1 is guaranteed against the second profile bar 2, as long as the fastening device 8 is in the closed position. A loosening of the connection between profile bar 2 and profile bar 1 is achieved by moving the fastening device 8 of the lever 10 from the closed position back into the open position shown in FIG. 1. The connector 3 can then be removed from the profile bars 1 and 2 again. All components are then available for use in new designs.

There are numerous variants of the first exemplary embodiment shown in FIG. 1 in which the invention can be implemented. It is generally favorable to provide two or more knives or clamping elements on the fastening device 8, which then conveniently on opposite sides of the

Cut the main body 6 into the material of the profile bar. As shown in FIG. 1, the lever 10 can be inserted and pulled out, but can also be firmly connected to the connector 3. In a further simple embodiment, not shown, the knife or clamping elements can simply be extended laterally out of the base body 6 without any relative movement between the knives 7 and the base body 6. In this case, the tensioning of the first profile body 1 against the second profile bar 2 is achieved by a further measure, not shown here. The one or more knives or clamping elements can also be pushed out of the base body via eccentric screws or the like and moved back into the latter.

A second preferred embodiment of the invention will be described with reference to FIGS. 2 to 9. In this embodiment, the actuating element 15 is designed as a lever which is fixedly connected to the connector 3. This has the advantage that no tools are required for assembly and disassembly. 4a and 4b show the connector used in FIG. 2 in a perspective view, the actuating element 15 in FIG. 4a being in a first end position in which the fastening device 8 to be explained in more detail with reference to FIGS. 6 and 8 is shown in FIG their open position. 4b shows the lever 15 in the second end position, in which the knives 7 arranged on the side of the base body 6 are extended and the fastening device is in the closed position. In the open position shown in Fig. 4a, the base body 6 of the connector 3 can be inserted into a groove 12 of the second profile bar 2. The same applies to the sliding block 4, which is inserted into a groove 12 of the first profile bar in the open position. The sliding block 4 can in turn be inserted both via an end face of the profile 1 and also by rotating the sliding block with respect to the first profile bar 1, as already described with reference to FIG. 1. The first profile bar 1 is then braced against the second profile bar 2 by turning the lever 15 into its second end position shown in FIG. 4b, as a result of which the fastening device 8 is brought into its closed position and the knives 7 are extended laterally. In the closed position shown in Fig. 2, the lever 15 lies flat on the base body 6, so that it no longer protrudes beyond the opening 24 of the groove 12 of the second profile bar 2 and the connector is thus integrated flush in the profile bars in the closed position. The neck 5 and the sliding block 4 are pivotally mounted against the base body 6 via an axis 16. With a corresponding cut, preferably of the second profile bar 2, this can be used to realize different angles α between the two profile bars 1 and 2.

In its end position shown in FIG. 4b, the lever 15 is tilted over a dead center in the direction of the base body 6, so that the lever 15 is prevented from opening unintentionally. In order to pivot the lever 15 into its open position shown in FIG. 4a, this dead center must first be overcome.

FIG. 5 shows a vertical section through the connector along the axis BB from FIG. 4a. The lever 15 is connected to the transmission lever 17 in the form of a knee joint. By pivoting the lever 15 in the direction 19, the transmission lever 17 is pushed in the direction 20, which in turn actuates the eccentric 18. These are shown in FIGS. 6 and 8 in a horizontal section along the straight line AA shown in FIG. 3. 6, the fastening device 8 is in its open position. 8 shows the closed position of the fastening device 8. If the transmission lever 17 is pushed by means of the actuating lever 15, this movement is transmitted to the eccentrics 18, whereby these in turn are pivoted about their axes 11. As a result of this pivoting movement, the knives 7 are brought from their retracted position (FIG. 6) into their closed position (FIG. 8). During this rotary movement from the open position to the closed position, the eccentrics 18 roll against one another at the contact surfaces 27. This serves to support the eccentrics 18 against one another when the knives 7 cut into the material of the profile bar 2 surrounding the groove 12. As a result, the axes 11 are relieved. 7 shows detail C from FIG. 6, the knives 7 being retracted into the base body 6 and not cutting into the material of the second profile bar 2 surrounding the groove 12. This corresponds to the open position of the fastening device 8. FIG. 9 shows in detail D from FIG. 8 how the knives 7 cut into the material surrounding the groove in the closed position. When the actuating lever 15 is closed, the eccentrics roll off one another and wedge the knives 7 in the profile bar 2. This creates a suit in direction 21, which presses the profile bars 1 and 2 firmly against one another. In the closed state, the knives 7 penetrate like shown in Fig. 9, in the second profile 2 and thus form a positive and positive connection with high strength. In order to achieve a sufficiently deep cutting of the knives 7, these, preferably the entire connector 3, are made of a harder material than the profile bars 1 and 2. In the case of profiled bars made of aluminum, hardened steel can be used for knives 7 and connectors 3. With this arrangement according to the invention, tool-free operation is possible as well as quick assembly and disassembly.

10a to 21b show further exemplary embodiments. Here, too, the connector 3 has a sliding block 4, a neck 5 and a base body 6. A swivel joint 16 is arranged in the region of the neck 5, so that the sliding block 4 can be pivoted in the direction 41 against the base body 6. 10a to 10c, 14a to 14c and 19a to 19c show the respective connector in the closed position, in which the knives 7 "or the clamping elements 7 'cut into the material surrounding the groove 12 or adhere to it in a frictionally locking manner 11a, 11b, 15a, 15b and 20a, 20b, 21a show the respective connectors in the open position, in which the base body 6 can be inserted into the second profile bar 2 and the sliding block 4 into the first profile bar 1. For adjusting the fastening device Between the open position and the closed position, the exemplary embodiments three to five also have a manually actuable actuating element which has the lever 15 and the transmission lever 17. The levers 15, 17 are connected to one another in an articulated manner and can be pivoted with respect to the base body 6. The lever 15 is in its second End position in which the fastening device is in the closed position is pivoted over a dead center, which prevents this the unwanted opening of the lever 15 as long as it is in the closed position. As shown in FIGS. 12 and 16, the connector 3 is advantageously integrated in the profile bars 1, 2 in the closed position and is flush.

In addition to this manually operable fastening device, the embodiments three to five of the connector according to the invention have an additional possibility of locking the base body 6 by means of a set screw 36 (not explicitly shown in the first exemplary embodiment). Additional tensioning of the connector 3 can be achieved by cutting the set screw 36 into the material surrounding the groove 12. This is particularly the case with arrangements of Profile bars cheap, which are particularly strong vibration or

Are exposed to tensile loads. The set screw 36 thus serves to additionally clamp the base body in the groove and can be omitted in normal applications. In the third exemplary embodiment according to FIGS. 10 a to 13, the set screw is arranged in a thread 29 of an additional tendon 28. This additional tendon 28 can be hooked into the base body 6 of the connector via a hook 42 and then inserted with this into the groove 12. In the exemplary embodiments shown, the base body 6 is additionally clamped in a direction perpendicular to the clamping elements 7 ′ or knives 7 ″ using the adjusting screw 36. In the fourth and fifth exemplary embodiment according to FIGS. 14a to 17b and FIGS. 19a to 21b the set screw 36 is arranged obliquely so that it points with its tip, which can be cut into the material of the second profile bar 2 surrounding the groove 12, in the direction of the sliding block 4. This results in an additional tensile stress in the direction 21.

The connector 3 shown in the third exemplary embodiment, according to FIGS. 10a to 13, has two rings 7 'arranged symmetrically to the longitudinal axis of the base body 6. These have a roughened or knife-like surface structure 34. As can be seen in the sectional view in FIG. 13, both rings 7 'have an inner recess 33 with which they enclose the axles 32 which are stationary with respect to the base body 6. It is provided that the inner recess 33 of the rings T is larger than the respective cross-sectional area of the axes 32. As a result, the rings 7 'can be arranged in the open position of the fastening device into the base body 6 and in the closed position pushed out of the base body 6. The surface structure 34 of the rings 7 'can be designed in a wide variety of forms. In the third exemplary embodiment, in addition to the rings 7 'and the axes 32, the fastening device also has, as already mentioned, the transmission lever 17 and the manually operable lever 15, which in turn are connected to one another via the joint 31. The lever 15 is pivotable about the axis 30 against the base body 6. By pivoting the lever 15 in one of the directions 19, the transmission lever 17 is moved in one of the directions of the double arrow 20. In the third exemplary embodiment, the transmission lever 17 has a wedge-shaped element 35. The rings 7 'roll on this. Conveniently, the wedge-shaped element 35 also has a roughened surface structure 44, which engages with the at least in the closed position 12 roughened or knife surface structure 34 of the ring 7 '. If the transmission lever 17 is moved in the opposite direction of the arrow 21, the wedge-shaped element 35 allows the rings 7 ′ to be pushed into the interior of the base body 6. The fastening device is then in the open position, in which the base body 6 can be inserted into and removed from the groove 12 of the second profile bar 2. If the transmission lever 17 is moved in the direction 21 by means of the lever 15, the rings 7 'are pressed out of the base body 6 by the wedge-shaped element 35 and pressed into the side walls of the groove 12 of the profile bar 2. A large tightening torque in direction 21 is achieved by the pressure and the twisting of the rings 7, so that the first profile bar 1 is pressed onto the second profile bar 2 by means of the sliding block.

In the fourth embodiment shown in FIGS. 14a to 18, the rings 7 'are replaced by the knives 7 ", among other things. In the embodiment shown, these have a serrated cutting edge with which they cut into the material of the second profile bar surrounding the groove 12 2. As can be seen in a partially sectioned illustration in FIGS. 17a and 17b, the two knives 7 "are fastened to the transmission lever 17 via a common axis of rotation 37. In addition, they slide along two wedge-shaped elements 35 arranged in a fixed manner in the base body 6. As can be seen in FIG. 15b, the knives 7 ″ in the region in which they overlap each have only half the thickness. FIG. 17a shows the fastening device of the fourth exemplary embodiment in the closed position, in which the knives 7 ″ into the groove Cut in 12 surrounding material. 17b shows the open position, the knives 7 "being retracted into the base body 6, so that the base body 6 is displaceable in the groove 12 of the second profile bar 2 and can thus be inserted into and pulled out of the groove. The adjustment between the position shown in FIG 17a and the open position shown in FIG. 17b, and vice versa, by pivoting the lever 15 in the two directions 19. As a result, the transmission lever 17 is displaced in the direction and counter to the direction 21. If the transmission lever 17 is displaced in the direction 21, the knives 7 ″ slide along the respective wedge-shaped element 35 and cut in one direction of movement towards the sliding block, into the material of the second profile bar 2 surrounding the groove 12 (see FIG. 17a). The knives 7 ″ are advantageously bent. The wedge-shaped elements 35 have in Alignment with the geometry of the knives 7 "at an angle against the longitudinal axis of the base body 6, so that in the closed position the knives cut into the material of the second profile bar 2 surrounding the groove 12 at an angle of at least 45 ° with respect to the longitudinal axis of the base body 6. As a result, tensile stress is exerted on the sliding block 4 and thus on the profile bar 1 in the direction 21, so that the profile bars 1 and 2 are pressed against one another.

16 again shows the connector 3 in the closed position. The connector 3 can also be braced in this embodiment by means of the adjusting screw 36. In order to be able to actuate the set screw 36 in the closed position of the lever 15, a hole 38 is provided in the lever through which a screwdriver or Allen key or the like can be passed. 18 shows a view from the direction 43 of the second profile bar 2 with a connector 3 arranged in a groove 12. In the second exemplary embodiment, the additional tensioning member 28 is permanently integrated into the base body 6 of the connector and is supported on the base body 6 via the shoulders 39. This prevents the additional tendon 28 from being pressed out of the base body 6 in the direction 40 when the set screw 36 is tightened.

In the fifth exemplary embodiment shown in FIGS. 19a to 21b, a total of four knives 7 "are arranged crosswise in the base body 6 of the connector. Two clamping elements (knives) 7", each arranged preferably on one side of a longitudinal axis of the base body 6, are closed connected to a component. The extensions 46 of the clamping elements 7 "are guided in a recess of the transmission lever 17 without further axes or the like. This recess is delimited by oblique side surfaces 45, which in the exemplary embodiment shown are V-shaped. The extensions 46 each form a component combined knives 7 "are separated along line 47. If the operating lever 15 is moved from the open position shown in FIGS. 20a, 20b and 21a to the closed position shown in FIGS. 19a to 19c and 21b, the transmission lever 17 is pulled in the direction of the sliding block 4. The v-shaped side walls 45 push the extensions 46 of the knives 7 "also in the direction of the sliding block 4, whereby the knives 7" slide along the wedge-shaped elements 35 and out into the Cut the groove 12 surrounding material of the second profile bar 2. To unlock the lever 15 is moved into the position shown in Fig. 21a, here the transmission lever 17 and thus the v-shaped surfaces 45 push the knives 7 "back into the open position in which the knives 7" are retracted into the base body 6. The knives 7 ", like the annular clamping elements 7 ', are preferably made of hardened material, such as hardened steel. The base body 6, neck 5 and sliding block 4, as well as the levers 15, 17 and the other components of the connector can be made as required The profile bars 1 and 2 are usually made of aluminum, but can also be made of other materials. In this embodiment, too, the connector is additionally braced by a screw provided in thread 29, not shown here possible.

22, grooves 48 are milled into the contact surfaces of the sliding block 4 in order to improve the fastening of the sliding block 4 in the groove. These prevent the sliding block from slipping in the groove, even under heavy loads. The grooves can be upright, transverse, diagonal or cord-like, among other things.

The present invention is not limited to the exemplary embodiments shown, but can be implemented in various variants without tools but also for operation with simple tools, such as screwdrivers or the like.

Claims

Patent claims:

1. Arrangement of two profile bars which can be fastened to one another with a connector, in which the connector has a sliding block and a base body connected to it via a neck, the sliding block engaging behind an undercut groove of the first profile bar in the installed state and the base body in an undercut groove of the second Profile bar is arranged and clamped via a fastening device, the fastening device between an open position in which the base body in a groove of the second

Profile bar can be inserted and removed from it, and a closed position, in which the base body is clamped in the groove of the second profile bar, is adjustable, characterized in that the fastening device (8) for clamping at least one knife (7, 7 ") or clamping element (7 ') which, in the closed position, cuts into a material of the second profile bar (2) surrounding the groove (12) or to which material surrounding the groove (12) adheres in a frictional manner.

2. Arrangement according to claim 1, characterized in that the fastening device (8) two or more knives (7, 7 ") or

Has clamping elements (7 ').

3. Arrangement according to claim 2 or 3, characterized in that the knife (7, 7 ") when changing the fastening device (8) from the open position to the closed position and vice versa in the longitudinal direction of the groove (12) of the second

Profile rod (2) is displaceable relative to the base body (6).

4. Arrangement according to one of claims 1 to 3, characterized in that the (the) knife (7, 7 ") in a direction of movement to the sliding block (4) in the groove (12) surrounding material of the second profile bar (2) cuts

(incise).

5. Arrangement according to one of claims 1 to 4, characterized in that the (the) knife (7) on (each) with the actuating element (15) rotatable eccentric (18) is (are) arranged.

6. Arrangement according to claim 5, characterized in that in the case of at least two eccentrics (18) these are at least partially supported against one another and / or can be rotated against one another between their open position and their closed position.

7. Arrangement according to claim 7, characterized in that the knife (7, 7 ") or the clamping element (7 ') between the open position and the closed position is displaceable relative to at least one wedge-shaped element (35).

8. Arrangement according to claim 7, characterized in that the clamping element (7 ') is designed as a ring with a roughened or knife-like surface structure (34).

9. Arrangement according to claim 8, characterized in that the ring (7 ') has an inner recess (33) with which it surrounds a stationary axis (32) with respect to the base body (6).

10. The arrangement according to claim 9, characterized in that the inner recess (33) of the ring (7 ') is larger than the cross-sectional area of the axis (32).

11. Arrangement according to one of claims 8 to 10, characterized in that the wedge-shaped element (35) also has a roughened surface structure (41) which, at least in the closed position, engages with the roughened or knife-containing surface structure (34) of the ring ( 7 ") stands.

12. Arrangement according to one of claims 7 to 11, characterized in that the wedge-shaped element (35) part of a relatively to the base body (6) displaceable

Transmission lever (17) of the fastening device.

13. The arrangement according to claim 7, characterized in that the knife (7 ") along a fixed in the base body (6) arranged wedge-shaped element (35) is displaceable.

14. Arrangement according to claim 13, characterized in that the knife (7 ") cuts in one direction of movement towards the sliding block (4) into the material of the second profile bar (2) surrounding the groove (12).

15. Arrangement according to claim 13 or 14, characterized in that the knife (7 ") has a serrated edge.

16. Arrangement according to one of claims 13 to 15, characterized in that the knife (7 ") is bent.

17. Arrangement according to one of claims 13 to 16, characterized in that the knife (7 ") is arranged on a transmission lever (17) of the fastening device by means of a rotatable axis (37).

18. Arrangement according to one of claims 13 to 17, characterized in that the knife (7 ") in the closed position at an angle of at least 45 ° with respect to a longitudinal axis of the base body (6) in the material of the second surrounding the groove (12) Cuts the profile bar (2).

19. Arrangement according to one of claims 13 to 15, characterized in that the clamping element in a recess of a transmission lever (17) of the fastening device is guided with at least two oblique side walls to the longitudinal direction of the base body, the side walls facing the sliding block and opposite lying limit of

Form recess.

20. The arrangement according to claim 19, characterized in that the inclined side walls are substantially V-shaped.

21. Arrangement according to one of claims 7 to 20, characterized in that the connector has at least two knives (7, 7 ") or clamping elements (7 ') and at least two wedge-shaped elements (35), which are preferably each symmetrical to a longitudinal axis of the Base body (6) are arranged.

22. Arrangement according to one of claims 1 to 21, characterized in that the connector has four knives (7, 7 ") or clamping elements (7 '), which are preferably arranged crosswise in the base body or protrude from it in the closed position.

23. The arrangement according to claim 22, characterized in that two clamping elements, preferably arranged on each side of a longitudinal axis of the base body, are connected to form a component.

24. Arrangement of two profile bars which can be fastened to one another with a connector, in which the connector has a slot nut and a base body connected thereto via a neck, the slot nut engaging behind an undercut groove of the first profile bar in the installed state and the base body in an undercut groove of the second Profile bar is arranged and clamped via a fastening device, in particular according to one of the claims

1 to 23, characterized in that the fastening device (8) has a manually actuable actuating element (15) with which it can be inserted between an open position in which the base body (6) can be inserted into a groove (12) of the second profile bar (2) and can be removed from it, and a closed position in which the base body (6) into the groove (12) of the second profile bar

(2) is tensioned, is adjustable.

25. The arrangement according to claim 24, characterized in that the actuating element (15) defines a pivotable lever between two end positions, the one end position in the open position of the

Fastening device (8) and the second end position in the closed position of the fastening device (8) is reached.

26. The arrangement according to claim 25, characterized in that the lever (15) is pivoted over a dead center in its second end position.

27. Arrangement according to one of claims 1 to 26, characterized in that the sliding block (4) and preferably the neck (5) against the base body (6) is (are) pivotable.

28. Arrangement according to one of claims 1 to 27, characterized in that the connector (3) in the closed position is integrated flush in the profile bars (12).

29. Arrangement according to one of claims 1 to 28, characterized in that in addition an adjusting screw (36) in a thread (29) in or on the base body

(6) is provided with which the base body (6) can be additionally braced, preferably in a direction perpendicular to the clamping elements (7 ', 7 ").

30. The arrangement according to claim 29, characterized in that the adjusting screw (36) is arranged obliquely and with its into the groove (12) surrounding material of the second profile bar (2) pointed in the direction of the sliding block (4).

31. Connector, characterized in that it can be used in an arrangement according to one of claims 1 to 30.