DE102022122313A1 - Corner connection of a frame made of metal profiles using corner angles and method for producing such a corner connection - Google Patents

Abstract

Shown and described is a corner connection (1, 1') of a frame made of metal profiles, in particular aluminum profiles, with a first and a second frame profile (3, 4), each having at least one hollow chamber and connected to one another via a corner bracket (2, 2'). ), each corner angle (2, 2') being arranged within the mitered ends of the frame profiles (3, 4), the first frame profile (3) having an adhesive inlet (16), the corner angle (2, 2' ) has an adhesive inlet opening (17) formed on an outside (8) of the corner angle (2, 2') corresponding to the adhesive inlet (16), the corner angle (2, 2') having at least one adhesive space (12) filled with adhesive on at least one outside , 13, 14, 15, 21, 22, 12 ', 13'), the corner bracket (2, 2') extending over the at least one adhesive space (12, 13, 14, 15, 21, 22, 12', 13 ') is connected to the first and second frame profiles (3, 4), the corner bracket (2, 2') having an adhesive-carrying channel (18) and the adhesive-carrying channel (18) extending from the adhesive inlet opening (17) to the at least an adhesive space (12,13,14,15, 21, 22, 12', 13'). In order to ensure a secure adhesive connection between corner angles (2, 2') and frame profiles (3,4) and to achieve the simplest and most cost-effective solution possible, the first and/or the second frame profile (3) have at least one adhesive outlet (23) and the corner angle (2, 2') has at least one adhesive outlet opening (24) corresponding to the adhesive outlet (23) and connected to the adhesive-carrying channel (18), the adhesive-carrying channel (18) running through the corner angle (2, 2'), so that when the corner bracket (2, 2') is filled with adhesive, adhesive only oozes out of the at least one adhesive outlet (23) when all adhesive spaces (12, 13, 14, 15, 21, 22, 12', 13') are essentially complete are filled with glue. A corresponding method is also claimed.

Description

The invention relates to a corner connection of a frame made of metal profiles, in particular aluminum profiles, preferably a window or a door, with a first and a second frame profile, each having at least one hollow chamber and connected to one another via a corner angle, each corner angle within the each having a miter Ends of the frame profiles are arranged, the first frame profile having an adhesive inlet, the corner angle having an adhesive inlet opening formed on an outer side of the corner angle and corresponding to the adhesive inlet, the corner angle having at least one adhesive space filled with adhesive on at least one outer side, the corner angle over the at least one adhesive space is connected to the first and the second frame profile, wherein the corner angle has an adhesive-carrying channel and wherein the adhesive-carrying channel runs from the adhesive inlet opening to the at least one adhesive space.

The invention further relates to a method for producing a corner connection, wherein adhesive is supplied into a corner angle via an adhesive inlet.

Corner connections of the type mentioned are used, for example, for the construction of window frames, door frames or facade frames. The frame profiles of such frames are usually straight, for example extruded frames with at least one hollow chamber, which abut one another at the corners of the frame. There the frame profiles are connected using corner brackets, some of which are inserted into the cavities of the two frame profiles to be connected to one another. To ensure a secure and tight connection in the corners of the frame, the frame profiles are glued to the corner brackets. For this purpose, adhesive is injected into the corner angles and led through an adhesive channel to the adhesive rooms. The adhesive spaces are suitable for holding a certain amount of adhesive and, when filled, create an adhesive connection between the corner angle and the frame profile.

A well-known corner connection is in the German patent application DE 10 2011 118 211 A1 described. This corner connection has a corner connector profile, which is inserted into two adjacent frame profiles. The corner connector profile, together with the frame profiles, forms an inner gap assigned to the inside of the frame and an outer gap assigned to the outside of the frame. The corner connector profile is designed as a hollow profile with several cavities. The inner and outer gaps are connected to the cavities via openings. The corner connection has an opening through which adhesive can be introduced into the interior of the corner connection. The adhesive is distributed in the corner connector profile via the cavities and reaches the inner and outer gaps, where the corner connector profile is connected to the frame profiles with the help of the adhesive.

In addition, corner connections are known from practice in which the corner connector profiles are designed as metal corner brackets.

For the known corner connections, the amount of adhesive to be injected is specified in the production catalog depending on the corner angle used. The disadvantage of the known corner profiles is that there is no way to assess from the outside whether sufficient adhesive has been used. This poses the risk that too little adhesive has been applied to the corner connection and as a result the corner angle and the ends of the frame profiles have not been securely glued together.

The present invention is therefore based on the object of designing and developing the corner connection mentioned at the beginning and previously described in more detail as well as the method for producing such a corner connection also mentioned at the beginning in such a way that a secure adhesive connection between the corner angle and the frame profiles can be ensured. The aim is to create a solution that is as simple and cost-effective as possible. In addition, it is desirable to make the process for producing such a corner connection simpler.

This object is achieved in a corner connection according to the preamble of claim 1 in that the first and / or the second frame profile have at least one adhesive outlet and the corner angle has at least one adhesive outlet opening corresponding to the adhesive outlet and connected to the adhesive-carrying channel, the adhesive-carrying channel runs through the corner angle in such a way that when the corner angle is filled with adhesive, adhesive only oozes out of the at least one adhesive outlet when all adhesive spaces are essentially completely filled with adhesive.

Furthermore, the aforementioned object is achieved in a method according to the preamble of claim 15 in that the adhesive supply is ended when adhesive emerges from an adhesive outlet, preferably at least one nail, in particular at least two nails, being inserted into one before the adhesive is introduced into the corner angle on the nail provided for this purpose hole, preferably in two nail holes provided in the corner bracket.

The invention has recognized that the production of corner connections can be made safer if the processor receives a signal (feedback) when enough adhesive has been introduced into the corner angle. This also eliminates the need for the processor to look up the amount of adhesive to be injected. As a result, a source of error in the production of the corner connection is reliably avoided.

The signal for the processor is generated by adhesive emerging from a designated adhesive outlet (feedback display). As soon as the processor sees that adhesive is escaping, he knows that all adhesive spaces are sufficiently filled with adhesive to ensure a secure adhesive connection between the corner angle and the frame profiles. At this point, the processor can stop supplying adhesive. This ensures that too little adhesive is never applied to the corner bracket.

To ensure that adhesive does not escape from the adhesive outlet when not all adhesive spaces are sufficiently filled with adhesive, it is necessary that the adhesive-carrying channel runs through the corner angle in such a way that when the corner connection is filled with adhesive, adhesive only oozes out of the at least one adhesive outlet, when all gluing spaces are essentially completely filled with adhesive. The course of the adhesive-carrying channel must therefore be designed in such a way that all adhesive spaces are supplied with adhesive before the adhesive can reach the adhesive outlet opening.

There are different options for realizing this requirement. For example, the adhesive-carrying channel can connect the adhesive inlet opening to the adhesive outlet opening via all adhesive spaces. In this case, the adhesive is guided from the adhesive inlet opening to the adhesive spaces arranged one after the other in an adhesive flow direction that occurs during the bonding process, where these are first filled before the adhesive can be directed to the adhesive outlet opening. Alternatively, several adhesive spaces can be filled at the same time, with the adhesive-carrying channel being designed such that it has a connection from the last completely filled adhesive space to the adhesive outlet opening.

Alternatively or additionally, the adhesive-carrying channel can have a termination section connected to the at least one adhesive outlet opening, the closure section having a smaller diameter than the remaining adhesive-carrying channel. The diameter must be chosen so small that the adhesive can flow relatively slowly through the end section, so that it is ensured that the adhesive only reaches the adhesive outlet opening when the adhesive spaces are filled with adhesive.

In a particularly preferred further embodiment of the invention, the corner angle comprises two essentially parallel corner angle halves, preferably made from a cast material, the corner angle halves each having an inner surface assigned to one another, in particular the adhesive-carrying channel at least in sections through channel-shaped ones provided on at least one of the inner surfaces Recess is formed, preferably on both inner surfaces corresponding channel-shaped recesses are formed, which together form an adhesive-carrying channel with a closed cross section.

When we talk about “corner angle halves” here and below, this should not only mean precisely designed half-shaped bodies, but also all corner angles constructed in two parts with a common joining surface, which form a common corner angle after the corner connections have been assembled or installed. The corner angle halves are preferably manufactured as cast parts.

Manufacturing the corner bracket from two corner bracket halves offers several manufacturing advantages. Advantageously, the corner angle halves are designed so that there is lateral play between the inner walls of the hollow chambers of the frame profiles and the corner angle halves. This means that the corner angles, each composed of two corner angle halves, can be easily inserted into the hollow chambers of the frame profiles to be connected. The corner angle halves can then be spread apart so that the play between the inner walls of the frame profiles and the corner angle halves essentially disappears. A clearance of 0.4 to 0.8 mm, preferably 0.5 to 0.7 mm and particularly preferably 0.6 mm has proven to be particularly useful. In addition, it is much easier to produce open channels on the surface of a casting than channels that are arranged inside the casting. By joining two cast parts together, channels running inside each corner angle can be produced with little effort.

A further preferred teaching of the invention provides that on the channel-shaped recess on one inner surface a wall is formed on both sides of the channel-shaped recess and on the other inner surface a recess corresponding to the wall is formed on both sides of the channel-shaped recess. Due to the above-described two-part design of each corner angle and the spreading of the corner angle halves to fasten the corner angle, a gap is created between the inner surfaces of the corner angle halves.

The channel-shaped recesses provided on the inner surfaces, which together form a closed channel section, are driven apart by the expansion, so that adhesive can run out of the channel-shaped recesses during the bonding process. This is undesirable. In order to reduce the gap through which adhesive could escape during bonding, the channel-shaped recesses can be equipped with a wall on one inner surface and a recess on the other inner surface. These should be dimensioned so that even after the corner angle halves have been spread, part of the wall is in the recess so that adhesive cannot easily escape laterally from the channel-shaped recesses. However, it should be noted that there is still a lateral gap between the side of the wall facing away from the adhesive-carrying channel and the recess. This should be as small as possible so that the escape of adhesive from the adhesive-carrying channel during the bonding process is avoided as much as possible or at least reduced as much as possible.

In a preferred embodiment of the invention, a recess and a nose are formed on the inner surfaces of the corner angle halves, the nose on one inner surface engaging in the recess on the other inner surface. The lugs and recesses serve as a positioning aid and make the assembly process easier.

Particularly preferably, at least one recess is formed on the inner surfaces, preferably at least two recesses are formed, which together form a nail hole. A nail, preferably a hollow nail, is driven into the nail holes when assembling the corner connection. The radius of the nail holes and the nail size are chosen so that the corner angle halves are driven apart when the nails are inserted into the nail holes. The ratio should be chosen so that after the nails have been inserted, the outer surfaces of the corner angle halves rest against the inner surfaces of the hollow chambers of the frame profiles. By inserting the nails, the lateral play that previously existed between the corner angle halves and the inner surfaces of the frame profiles is reduced to such an extent that the corner angle halves sit firmly in a hollow chamber of the frame profiles. The nail holes should be positioned so that the spread of the corner angle is as even as possible. For this reason, it is particularly advantageous to provide at least two nail holes, which can be filled from different sides if possible. The nail holes should be at a sufficient distance from the gluing spaces. A distance of 0.4 to 0.8 mm, preferably 0.5 to 0.7 mm and particularly preferably 0.6 mm has proven to be expedient. The nail holes are particularly preferably provided with a chamfer in order to simplify the insertion of the nails.

According to a further preferred teaching of the invention, a sealing tape is arranged between the corner angle halves. The sealing tape preferably has recesses in the area of the channel-shaped recesses, depressions, lugs and recesses forming the nail holes provided on the inner surfaces. As already explained above, the corner angle halves are preferably designed so that there is lateral play between the corner angle halves and the inner walls of the frame profiles. The gap caused by the play is filled using the sealing tape. This advantageously has the contour of the inner surfaces of the corner angle halves. It can be applied to the entire inner surface of a corner bracket like double-sided adhesive tape.

The sealing tape consists of elastic foam and two adhesive surfaces. The thickness must be chosen depending on the gap. For example, a sealing tape thickness of 0.8 to 1.2 mm, preferably 0.9 to 1.1 mm and particularly preferably 1 mm has proven to be expedient. The corner angle halves, between which a sealing tape is arranged, should have an excess width compared to the inner walls of the frame profiles. When assembling a corner bracket, the corner bracket halves are pressed together so that they can be inserted into the hollow chambers of the frame profiles. If the pressure caused by the compression is released, the sealing tape expands, causing the corner bracket to be spread open so that the outer surfaces of the corner bracket halves press against the inner walls of the frame profiles. The sealing tape helps to avoid or at least reduce uncontrolled running of the adhesive into the profile during the bonding process, so that adhesive consumption is also reduced.

Particularly preferably, the adhesive-carrying channel runs at least in sections on an outside of the corner angle and is designed as an open channel. A corresponding channel section also ensures bonding between the corner angle and the frame profile and, in addition to guiding the adhesive, also serves as an adhesive space. The adhesive-carrying channel preferably runs at least in sections along the miter formed by the ends of the frame profiles, so that secure bonding of the frame profiles to the miter is ensured.

A first adhesive space advantageously forms the adhesive inlet opening, a channel inlet opening of the adhesive-carrying channel being arranged in the first adhesive space and the adhesive inlet and the channel inlet opening not being arranged coaxially. The adhesive inlet opening formed on each corner angle and the adhesive inlet formed on the frame profile form a passage in the unfilled state or during the filling process through which adhesive can flow into the interior of the corner angle. If the adhesive inlet opening is formed by the first adhesive space and the adhesive inlet is arranged essentially coaxially with the channel inlet opening, a static mixer usually used for adhesive injection could protrude with its tip into the channel inlet opening. In this case, the first adhesive space would not be filled with adhesive or only insufficiently. For this reason, it is advisable not to position the adhesive inlet coaxially with the channel inlet opening.

In addition, it has proven to be expedient if the corner bracket has a backing that modifies the width of the corner bracket. This makes it possible to adapt the corner bracket to different frame profiles of different sizes with little effort. The backing can, for example, be designed as a smaller angle that is attached to one side of the corner angle in the same orientation.

Advantageously, at least one adhesive space is also formed on the backing, which is connected to the adhesive-carrying channel. In this way, the backing can also be glued to the frame profile.

The backing and the corner bracket can preferably be connected and/or connected to one another in a form-fitting manner via a dovetail connection. A dovetail connection allows for easy connection of the back lining, which can also be released again if necessary. In addition, the processor has a corner bracket that is put together, which makes assembly easier to handle than two individual parts.

According to a preferred embodiment of the invention, the corner angle is essentially mirror-symmetrical with a plane of symmetry running through a bisector of the corner connection. The bisector typically runs through the miter. Thanks to such a mirror-symmetrical design, every corner angle can be used more flexibly.

• 1 eine bekannte Eckverbindung für einen Rahmen aus einem Metallprofil, schematisch, in perspektivischer Ansicht,
• 2A ein erstes Ausführungsbeispiel einer erfindungsgemäßen Eckverbindung in perspektivischer Ansicht,
• 2B die Eckverbindung aus 2A in perspektivischer Ansicht von der anderen Seite,
• 3 den Eckwinkel der Eckverbindung aus 2A in perspektivischer Ansicht in einer Explosionsdarstellung,
• 4A eine Detailansicht des Eckwinkels der Eckverbindung aus 2A in nicht gespreiztem Zustand,
• 4B eine Detailansicht des Eckwinkels der Eckverbindung aus 2A in gespreiztem Zustand,
• 5 die Eckverbindung aus 2A in einem mit Klebstoff befüllten Zustand,
• 6A ein zweites Ausführungsbeispiel einer erfindungsgemäßen Eckverbindung in perspektivischer Ansicht,
• 6B die Eckverbindung aus 6A in perspektivischer Ansicht von der anderen Seite,
• 7A die Eckverbindung aus 6A in einer Seitenansicht,
• 7B die Eckverbindung aus 6A in einer Seitenansicht von der anderen Seite,
• 8A den Eckwinkel aus 6A in einem mit Klebstoff befüllten Zustand in perspektivischer Ansicht,
• 8B den Eckwinkel aus 6A in einem mit Klebstoff befüllten Zustand in perspektivischer Ansicht von der anderen Seite und
• 9 den Eckwinkel der Eckverbindung aus 6A in perspektivischer Ansicht mit einem Dichtband.

The invention is explained in more detail below using a drawing that only shows exemplary embodiments. The drawing shows, schematically,

• 1 a known corner connection for a frame made of a metal profile, schematic, in a perspective view,
• 2A a first exemplary embodiment of a corner connection according to the invention in a perspective view,
• 2 B the corner connection 2A in perspective view from the other side,
• 3 the corner angle of the corner connection 2A in a perspective view in an exploded view,
• 4A a detailed view of the corner angle of the corner connection 2A in a non-spread state,
• 4B a detailed view of the corner angle of the corner connection 2A in a spread state,
• 5 the corner connection 2A in a state filled with adhesive,
• 6A a second embodiment of a corner connection according to the invention in a perspective view,
• 6B the corner connection 6A in perspective view from the other side,
• 7A the corner connection 6A in a side view,
• 7B the corner connection 6A in a side view from the other side,
• 8A the corner angle 6A in a state filled with adhesive in a perspective view,
• 8B the corner angle 6A in a state filled with glue in a perspective view from the other side and
• 9 the corner angle of the corner connection 6A in perspective view with a sealing tape.

1 first shows schematically the structure of a known corner connection 1 in a perspective view. You can first see the end of a horizontally extending frame profile A, which is designed here as a thermally insulated composite profile and has an outer shell B, an inner shell C and insulating webs D to connect them. The cavity between the insulating webs D is filled with insulation E. It can also be seen that the outer shell B has a hollow chamber F and the inner shell C has a hollow chamber G. To connect to an upper end of a vertically arranged (and not shown for clarity) further frame profile, corner brackets H ₁ and H ₂ are used, the free legs of which on the one hand go into the hollow chambers F and G of the horizontal frame profile A and on the other hand from above into the vertical hollow chambers of the vertical frame profile, not shown, and glued there.

For clearer representation are in 1 the horizontal legs of the corner angles H ₁ and H ₂ are not yet fully inserted, that is, shown pushed into the cavities F and G as far as they will go. Finally, you can see that the end of the frame profile A is provided with a miter cut, so that the abutting edge I visible on the inner shell C has a miter.

In the 2A and 2 B a corner connection 1 according to the invention is shown in a first exemplary embodiment of a corner angle 2 in a perspective view from two sides. The corner bracket 2 is arranged within a first and a second frame profile 3, 4, which are connected to one another via the corner bracket 2. Four appropriately designed frame profiles, which are connected to each other via four corner brackets, form a frame of a window, a door or the like. Furthermore, only a single corner angle per corner connection is shown in the figures in order to obtain a better overview. As described in more detail above, when corner connections are made to the frame profiles used, pairs of corner angles are regularly inserted into the hollow chambers of both the outer shell and the inner shell of the frame profiles and glued there. The frame profiles 3, 4 are therefore only indicated by dashed lines for the sake of clarity. In addition, for the sake of clarity, no adhesive is shown.

The corner angle 2 comprises two corner angle halves 5, 6, which are preferably made of a cast material. The corner angle halves 5, 6 are arranged next to each other so that together they form the wider corner angle 2. In this exemplary embodiment, the corner angle halves 5, 6 are designed to be mirror-symmetrical, which has an advantageous effect on the flexibility during installation of the corner angle 2.

The corner bracket 2 has adhesive spaces 12, 13, 14, 15 on its outer sides 8, 9, 10, 11 facing the inner surfaces of the frame profiles 3, 4. The adhesive spaces 12, 13, 14, 15 are suitable for receiving an adhesive not shown in the figures. The corner angle halves 5, 6 of the corner angle 2 are connected to the frame profiles 3, 4 when filled with adhesive via the adhesive spaces 12, 13, 14, 15. In the in 2A The exemplary embodiment shown is a first adhesive space 12 on the external, horizontally extending outside 8, a second adhesive space 13 on the external, vertically extending outside 9, a third adhesive space 14 on the horizontally extending internal outside 10 and a fourth adhesive space 15 on the vertically extending internal outside 11 intended.

The adhesive can be introduced into the corner connection 1 via an adhesive inlet 16 formed on the first frame profile 3. The adhesive inlet 16 is arranged above the first adhesive space 12. In this exemplary embodiment, the first adhesive space 12 forms an adhesive inlet opening 17. The adhesive inlet 16 and the adhesive inlet opening 17 together form a passage during the filling process through which adhesive can be introduced into the interior of the corner bracket 2. A channel inlet opening is formed on the first adhesive space 12, from which an adhesive-carrying channel 18 extends into the interior of the corner bracket 2. The adhesive inlet 16 and the channel inlet opening are advantageously not arranged coaxially, so that the tip of a static mixer that is usually used for adhesive injection cannot enter the adhesive-carrying channel 18. This could otherwise lead to the first adhesive space 12 not being filled or only being filled insufficiently.

Glue can be transported from the adhesive inlet opening 17 to the individual gluing spaces 12, 13, 14, 15 via the adhesive-carrying channel 18. As in 3 shown, the first and second adhesive spaces 12, 13 are connected to one another via the adhesive-carrying channel 18. In addition, it is already in 2A and 2 B It can be seen that the adhesive-carrying channel 18 runs diagonally along an angle bisector of the corner bracket 2 on its outer surfaces 19, 20. This section of the adhesive-carrying channel 18 is designed as an open channel so that it fulfills the function of an adhesive space when filled. The section advantageously runs along the abutting edges of the frame profiles 3 and 4 that form the miter and are securely glued over this channel section.

Glue can be transported from the third and fourth gluing spaces 14, 15 to a fifth and sixth gluing spaces 21, 22 via the diagonally extending section of the adhesive-carrying channel 18. The fifth and sixth adhesive spaces 21, 22 are arranged in the corner regions of the corner bracket 2 and are last filled with adhesive. In the area of the sixth adhesive space 22, an adhesive outlet 23 is arranged in the first frame profile 3. In this exemplary embodiment, the sixth adhesive space 22 takes over the adhesive outlet opening 24 and forms a passage with the adhesive outlet 23 in the frame profile 3 in the unfilled state or during adhesive injection, through which adhesive can flow to the outside.

The adhesive-carrying channel 18 runs through the corner angle 2 in such a way that the sixth adhesive space 22 is filled last, so that adhesive can only emerge from the adhesive outlet 23 when all of the adhesive spaces 12, 13, 14, 15, 21, 22 are filled with adhesive . The escape of adhesive is a reliable signal for the processor to stop further supply of adhesive.

The corner angle 2 includes the corner angle halves 5, 6, each of which has a mutually assigned inner surface 25, 26, as is clear 3 emerges. As already from the 2A and 2 B As can be seen, the adhesive-carrying channel 18 on the outer surfaces 19, 20 is also formed in sections by the channel-shaped recesses provided in the inner surfaces 25, 26. In this exemplary embodiment, the channel-shaped recesses have a semicircular cross section both on the outer surfaces 19, 20 and on the inner surfaces 25, 26. In the area of the inner surfaces 25, 26 they together form a substantially circular channel.

Two recesses 27 are formed on the inner surfaces 25, 26 of the corner angle halves 5, 6, two of which each form a nail hole 28. A nail (not shown here), such as a hollow nail, can be inserted into the nail holes 28 (through corresponding holes in the frame profiles 3 and 4). Through this process, the two corner angle halves 5, 6 are spread apart, so that the outer surfaces 19, 20 of the corner angle halves 5, 6 assigned to the inner surfaces 25, 26 are pressed against the inner surfaces of the frame profiles 3, 4. By spreading, any offset that may exist between the frame profiles 3, 4 is reduced, so that subsequent alignment is only slightly or no longer necessary. Even when installed, the shear resistance of the profiles is increased by spreading. In addition, the spreading has a positive effect on the open section of the adhesive-carrying channel 18 formed on the outer surfaces 19, 20. Spreading also ensures that the corner angle halves 5, 6 rest firmly on the inner sides of the frame profiles 3, 4, so that the adhesive cannot flow over the edges of the adhesive-carrying channel 18 when the corner connection 1 is filled.

In 3 is the corner angle 2 formed from the corner angle halves 5, 6 2A shown in a perspective view in an exploded view. In 3 The flow direction of the adhesive during adhesive injection is shown schematically with arrows. From this illustration it can be clearly seen that the adhesive can flow from the first adhesive space 12 via the adhesive-carrying channel 18 to the second adhesive space 13. This section is designed in the shape of a circular arc. From the circular arc-shaped section, a section of the adhesive-carrying channel 18 formed on the inner surfaces 25, 26 extends diagonally to the third and fourth adhesive spaces 14, 15. The adhesive is applied from the third and fourth adhesive spaces 14, 15 to the outer surfaces 19 , 20 of the corner angle halves 5, 6 extending sections of the adhesive-carrying channel 18. The adhesive reaches the fifth and sixth adhesive spaces 21, 22 via the sections of the adhesive-carrying channel 18 running on the outer surfaces 19, 20, from where it reaches the adhesive outlet 23.

In addition, in 3 You can clearly see that a depression 29 and a nose 30 are formed on the inner surfaces 25, 26 of the corner brackets 5, 6. When assembled, these interlock and prevent both parts from moving.

Like that 2A , 2 B and 3 As can be seen, the corner angle halves 5, 6 are each constructed in mirror symmetry. The plane of symmetry runs through an angle bisector of the corner connection 1, which in this case also corresponds to the miter of the frame.

In the 4A and 4B a detailed view of an internal section of the adhesive-carrying channel 18 is shown. As already explained, the adhesive-carrying channel 18 is formed in sections by channel-shaped recesses provided on the inner surfaces 25, 26. In this exemplary embodiment, the recesses on the inner surfaces 25, 26 have a substantially semicircular cross section and together form a substantially circular channel section. The channel-shaped recess has a wall 31 on one inner surface on both sides of the channel-shaped recess. On the other inner surface, a recess 32 corresponding to the wall is formed on both sides of the channel-shaped recess. Im together When built, the wall 31 engages in the recess 32.

If, as explained above, nails are inserted into the nail holes 28 provided for this purpose, as in 4B can be seen, the corner angle halves 5, 6 spread apart. The expansion creates a gap 33 between the two corner angle halves 5, 6. Without the wall 31, the adhesive could flow into the gap 33 during the filling process. The wall 31 arranged in the recess 32 can prevent or at least reduce this effect. For this purpose, the lateral distance 34 between the recess 32 and the wall 31 should be chosen to be significantly smaller than the gap 33 between the corner angle halves 5, 6. The gap 33 between the corner angle halves 5 and 6 can be, for example, 0.6 mm and the distance 34 between the recess 32 and the wall 31 can be 0.2 mm.

In 5 is corner connection 1 2A shown in a glue-filled state. It can be seen that the corner bracket 2 is glued in several places to the frame profiles 3, 4, which are only indicated.

In the 6A and 6B a second exemplary embodiment of a corner connection 1 'according to the invention is shown. The main difference from the first exemplary embodiment is a backing 35 that changes the width of the corner angle 2 '. For example, an extruded profile can be used as the backing 35. The backing 35 can be produced in several sizes with little effort and the width of the corner angle 2' can be modified by attaching it to a corner angle half 6'. The two elements can be connected, for example, via a dovetail connection.

A first adhesive space 12' is formed on an outer surface 36 of the backing 35. The adhesive-carrying channel 18 has a section leading to the first adhesive space 12'. A second adhesive space 13' opposite the first adhesive space 12' is formed on the corner angle half 5' without backing 35. The adhesive-carrying channel 18 also has a section leading to the second adhesive space 13'. The second adhesive space 13' is designed to be larger than the first adhesive space 12', so that the first adhesive space 12' is completely filled with adhesive more quickly during the filling process than the second adhesive space 13'.

The adhesive is fed into the second adhesive space 13' in an upper region of the second adhesive space 13'. Two sections of the adhesive-carrying channel 18 lead from the second adhesive space 13' in the direction of an adhesive outlet opening 24, with only one of them having a corresponding adhesive outlet 23 in this exemplary embodiment. These two sections are designed as a final section 37 and accordingly have a smaller diameter than the other sections of the adhesive-carrying channel 18. Due to the smaller diameter, the adhesive can only flow comparatively slowly through the final section 37. The end sections 37 of the adhesive-carrying channel 18 starting from the second adhesive space 13' begin in a lower region of the second adhesive space 13', which is last filled with adhesive during the filling process. This structure ensures that during the filling process adhesive is only transported to the adhesive outlet 23 when the first and second adhesive spaces 12', 13' are completely filled with adhesive.

The first and second adhesive spaces 12', 13' are preferably arranged behind the miter area of the profile frame, so that the abutting edges that meet there are securely glued.

In the 7A and 7B the corner connection 1 'is shown in a side view. The adhesive-carrying channel 18 and the nail holes 28 are shown in dashed lines. In the 7A and 7B The flow direction of the adhesive marked with arrows can be easily understood during the filling process. The adhesive is introduced into the corner connection 1' via an adhesive inlet 16 formed on the frame profile 3. In this exemplary embodiment, the adhesive-carrying channel 18 is connected directly to the adhesive inlet 16. From there, the adhesive-carrying channel 18 leads to the first and second adhesive spaces 12', 13'. Due to the smaller volume of the first adhesive space 12', it is filled more quickly than the second adhesive space 13'. Since the adhesive is introduced into the second adhesive space 13' at a point that is maximally distant from the point at which the adhesive flows out, it is ensured that during the bonding process adhesive only flows out of the second adhesive space 13' when it essentially flows out is completely filled with glue. From the second adhesive space 13′, the adhesive is transported via the adhesive-carrying channel 18 to the adhesive outlet 23. This section is designed as a final section 37.

The 8A and 8B show the corner connection 1' 6A and 6B in a state filled with glue. It can be seen that the corner angle 2 'is glued to the frame profiles 3, 4 significantly via the first and second adhesive spaces 12', 13'.

In 9 is finally a corner angle half 6 'of the corner angle 2' 6A shown in perspective view. It can be seen that a sealing tape 38 is arranged on the inner surface 26, which in the assembled state is arranged between the corner angle halves 5 ', 6'. The sealing tape 38 has recesses in the area of the channel-shaped recesses, depressions 29, lugs 30 and the nail holes 28 forming recesses 27 provided on the inner surfaces 25, 26.

The corner bracket 2 'is also nailed and spread, as explained in detail in the context of the first exemplary embodiment. The resulting gap 33 is filled with the help of the sealing tape 38. This has the contour of the inner surfaces 25, 26 of the corner angle halves 5 ', 6'. It is glued to the inner surfaces 25, 26 of the corner angle halves 5', 6' and works like a double-sided adhesive tape. The sealing tape 38 has an elastic foam in the middle and two adhesive surfaces on the outside. The sealing tape 38 is so thick that the total width of the corner bracket 2 'with the sealing tape 38 is excessive compared to the cavity formed in the frame. The corner angle halves 5', 6' must be pressed together in order to be able to insert the corner angle 2' into the frame profiles 3, 4. If the pressure is released, the sealing tape 38 expands, whereby the corner bracket 2 'is spread open and presses against the frame profiles 3, 4 from the inside. The sealing tape 38 delimits the internal adhesive-carrying channel 18 with its recesses, so that uncontrolled running of the adhesive into the corner angle 2 'is avoided and the consumption of adhesive is also reduced. A correspondingly designed sealing tape can also be used in the first exemplary embodiment, even if not shown.

The dimensions of the corner angles used can be designed differently. While the cross section of the corner angles is tailored to the internal dimensions of the frame profiles to be connected, the leg length can vary. It depends, for example, on the size of the frame and the expected loads for the respective application.

Reference symbol list

A

Frame profile

b

Outer shell

C

Inner shell

D

Insulating bars

E

insulation

F

Cavity outside

G

cavity inside

H1, H2

corner angle

I

abutting edge

1, 1'

Corner connection

2, 2'

corner angle

3, 4, 3', 4'

Frame profile

5, 5', 6, 6'

Corner angle halves

8,9,10,11

outsides

12, 12', 13, 13', 14,15

Gluing rooms

16

Adhesive inlet

17

Adhesive inlet opening

18

channel

19.20

Exterior surfaces

21.22

Glue room

23

Adhesive outlet

24

Adhesive outlet opening

25.26

Inner surface

27

recess

28

nail hole

29

deepening

30

Nose

31

wall

32

recess

33

gap

34

Distance

35

Backfeeding

36

external surface

37

Final section

38

sealing tape

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011118211 A1 [0004]

Claims (15)

Corner connection (1, 1') of a frame made of metal profiles, in particular made of aluminum profiles, preferably of a window or a door, with a first and a second frame profile (3), each having at least one hollow chamber and connected to one another via a corner bracket (2, 2'). , 4; 3 ', 4'), each corner angle (2, 2') being arranged within the mitered ends of the frame profiles (3, 4; 3', 4'), the first frame profile (3, 3 ') has an adhesive inlet (16), the corner angle (2, 2') having an adhesive inlet opening (17) formed on an outer side (8) of the corner angle (2, 2') corresponding to the adhesive inlet (16), the corner angle ( 2, 2') has at least one adhesive space (12, 13, 14, 15, 21, 22, 12', 13') filled with adhesive on at least one outside, the corner angle (2, 2') extending over the at least one adhesive space (12, 13, 14, 15, 21, 22, 12', 13') is connected to the first and second frame profiles (3, 4; 3', 4'), the corner angle (2, 2') being a has an adhesive-carrying channel (18) and wherein the adhesive-carrying channel (18) runs from the adhesive inlet opening (17) to the at least one adhesive space (12, 13, 14, 15, 21, 22, 12 ', 13'), characterized in that the first and/or the second frame profile (3, 4; 3', 4') have at least one adhesive outlet (23) and the corner bracket (2, 2') has at least one adhesive outlet opening (24) corresponding to the adhesive outlet (23) and connected to the adhesive-carrying channel (18), the adhesive-carrying channel (18) runs through the corner angle (2, 2') so that when the corner angle (2, 2') is filled with adhesive, adhesive only oozes out of the at least one adhesive outlet (23) when all the adhesive spaces (12, 13, 14 , 15, 21, 22, 12 ', 13') are essentially completely filled with adhesive. Corner connection according to Claim 1 , characterized in that the adhesive-carrying channel connects the adhesive inlet opening with the adhesive outlet opening via all adhesive spaces. Corner connection according to Claim 1 or 2 , characterized in that the adhesive-carrying channel (18) has a termination section (37) connected to the at least one adhesive outlet opening (24), which has a smaller diameter than the remaining adhesive-carrying channel (18). Corner connection according to one of the Claims 1 until 3 , characterized in that the corner angle (2, 2') comprises two essentially parallel corner angle halves (5, 6; 5', 6'), preferably made of a cast material, that the corner angle halves (5, 6; 5', 6 ') each have a mutually assigned inner surface (25, 26), in particular the adhesive-carrying channel (18) is formed at least in sections by channel-shaped recesses provided on at least one of the inner surfaces (25, 26), preferably on both inner surfaces (25, 26) corresponding channel-shaped recesses are formed, which together form an adhesive-carrying channel (18) with a closed cross section. Corner connection according to Claim 4 , characterized in that on the channel-shaped recess on one inner surface (25) a wall (31) is formed on both sides of the channel-shaped recess and on the other inner surface (26) a recess (32) corresponding to the wall is formed on both sides the channel-shaped recess is formed. Corner connection according to Claim 4 or 5 , characterized in that a recess (29) and a nose (30) are formed on the inner surfaces (25, 26), the nose (30) on one inner surface (25, 26) in the recess (29). other inner surface (25, 26). Corner connection according to one of the Claims 4 until 6 , characterized in that at least one recess (27), preferably at least two recesses (27), is/are formed on the inner surfaces (25, 26), which together form a nail hole (28). Corner connection according to one of the Claims 4 until 7 , characterized in that a sealing tape (38) is arranged between the corner angle halves (5 ', 6'), the sealing tape (38) preferably having recesses in the area of the channel-shaped recesses, depressions (29) provided on the inner surfaces (25, 26). , noses (30) and the nail holes (28) forming recesses (27). Corner connection according to one of the Claims 1 until 8th , characterized in that the adhesive-carrying channel (18) runs at least in sections on an outside of the corner angle (2, 2 ') and is designed as an open channel and preferably runs at least in sections along the miter formed by the ends of the frame profiles (3, 4). . Corner connection according to one of the Claims 1 until 9 , characterized in that a first adhesive space (12) forms the adhesive inlet opening (17), wherein a channel inlet opening of the adhesive-carrying channel (18) is arranged in the first adhesive space (12) and wherein the adhesive inlet (16) and the channel inlet opening are not arranged coaxially. Corner connection according to one of the Claims 1 until 10 , characterized in that the corner angle (2') has a backing (35) which can be modified to the width of the corner angle (2'). Corner connection according to Claim 11 , characterized in that at least one adhesive space (12') is formed on the backing (35), the adhesive space (12') being connected to the adhesive-carrying channel (18). Corner connection according to Claim 11 or 12 , characterized in that the backing (35) and the remaining part of the corner bracket (2 ') can be connected and/or connected to one another via a dovetail connection. Corner connection according to one of the Claims 1 until 13 , characterized in that the corner angle (2,2') is designed to be essentially mirror-symmetrical with a plane of symmetry running through a bisector of the corner connection (1,1'). Method for producing a corner connection (1, 1') according to one of Claims 1 until 14 , wherein adhesive is supplied into a corner angle (2, 2 ') via an adhesive inlet (16), characterized in that the adhesive supply is ended when adhesive emerges from an adhesive outlet (23), preferably before the adhesive is introduced into the corner angle ( 2, 2') at least one nail, in particular at least two nails, into a nail hole (28) provided for this purpose on the corner bracket (2, 2'), preferably in two nail holes (28) provided for this purpose on the corner bracket (2, 2'). is/are introduced.

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