Reinforcing element, butt joint and method for its manufacture

Description

[0001] The invention relates to a reinforcing element for butt joints of profiles, in particular for windows and / or doors or the like, especially for reinforcing a right-angled joint. The invention also relates to a method for its manufacture.

[0002] Such a reinforcing element according to the invention is particularly intended for the static reinforcement of a connection between a mullion profile and at least one transom profile, preferably for the static reinforcement of a cross connection between a mullion profile and two transom profiles opposite each other around the mullion profile, preferably for windows and / or doors, in which the mullion profile and the at least one transom profile are each formed from a hollow plastic profile with inserted or at least insertable hollow steel reinforcing profiles.

[0003] The invention further relates to a butt joint between a post profile and at least one rail profile, in particular those which are each formed from a hollow plastic profile with inserted or at least insertable hollow steel reinforcement profiles, in which the post profile and the at least one rail profile are attached to each other at a 90-degree butt joint by means of fastening elements.

[0004] The invention also relates to a method for producing a butt joint between a mullion profile and at least one transom profile of a window or door, in which the transom and mullion profiles are made of hollow plastic profiles with steel reinforcement profiles and are attached to each other, in particular at right angles using fastening elements that act connecting between the profiles.

[0005] It is known from the prior art to use a connector for joining hollow plastic profiles together at the butt joint, which must be screwed to both the post profile and the rail profile so that reliable force absorption can be ensured.

[0006] Such connectors are often highly complex and multi-part, meaning that assembling a structure made up of hollow plastic profiles requires considerable effort to connect the connector to the individual profiles. This results in high assembly costs, as a significant amount of time is needed to attach the connector to the respective profiles.

[0007] In the manufacture of window, door or window elements, it may be necessary to form so-called T-connections or cross connections between a vertically continuous mullion profile and at least one transom profile that abuts it at an angle, in particular at a right angle.

[0008] German patent DE 20 2020 100 287 U1 describes a T-connector that joins abutting profiles with essentially angled, metallic connector elements. These are mounted outside the hollow chambers of one of the profiles, on its profile surface, and the profile to be joined is butted together by placing its hollow chamber section onto the connector.

[0009] This T-connector is suitable for creating a connection between a continuous profile and a profile that abuts it at an angle, particularly a right angle. When several profiles are arranged in a row to form a window facade, intersections occur that are not sufficiently load-bearing for this type of connection.

[0010] EP 0 733 753 A1 describes a reinforcement element for the static reinforcement of a connection between a post profile and at least one transom profile.

[0011] The object of the invention is therefore to propose an integrated, stable, and robust post-and-beam construction, particularly for hollow plastic profiles, which ensures a high level of parapet safety at intersections. Preferably, a continuous, steel inner structure is to be offered for this purpose. A "steel-in-steel" solution is required, in which reinforcement preferably also functions as fall protection to meet the static requirements and loads of the construction project. In particular, it is an object of the present invention to provide reinforcement elements with which a reliable and positionally secure reinforcement of the connection between post and beam profiles can be achieved in a particularly effective manner, ensuring reliable force absorption in the x, y, and z directions, i.e., circumferentially in all directions.This problem is solved by a reinforcing element having the features of claim 1. Such a reinforcing element can preferably be manufactured according to the features of claim 12. The reinforcing element according to the invention provides a butt joint according to claim 8, which can preferably be manufactured according to the method of claim 10.

[0012] Advantageous embodiments of the invention are described in the respective dependent claims.

[0013] The bolt of such a reinforcing element is preferably movable between a first end position and a second end position, wherein the first end position is defined by a stronger compression of a spring element compared to the second end position and the second end position is determined by a stop element mounted on the bolt, which abuts in a recess of a metal core against the stop formed there, and the bolt in its application projects into the post profile and its steel reinforcement, in particular completely passing through the post profile with the steel reinforcement through a through hole.

[0014] The advantage of the invention is that several window elements can be joined to form a window front by means of statically stable reinforcing core elements with bolts protruding from them, particularly in the intersection areas, without impairing the appearance and maintenance advantages of a plastic window.

[0015] Accordingly, a reinforcing element for angularly connecting a transom profile comprising a hollow chamber and a mullion profile, particularly for windows, doors, or the like, is proposed, as well as profile arrangements with at least one transom profile and at least one mullion profile, and methods for assembling such arrangements. The reinforcing element according to the invention can be received at least partially in a transom profile, namely in its steel reinforcement profile, and connected to it, preferably by a positive fit and / or a force-fit.The reinforcing element comprises a base body made of aluminum, referred to as the core element, with a recess in which a spring element, acting as a force-generating element, is received in a pre-tensioned and mechanically secured state. This spring element directly or indirectly exerts a force on the bolt in the reinforcing element, in particular such that the bolt is movable relative to the core element along a longitudinal axis of the core element and the recess. In this application, the longitudinal axis of the core element also corresponds to the longitudinal axis of the locking profile.

[0016] According to the reinforcing element according to the invention, the spring element is designed in particular as a helical spring. By using spring elements that are operatively connected to the bolt, a particularly simple yet effective movement mechanism can be realized, whereby the spring element can be conveniently attached to a guide pin with a head and arranged in the recess of the core element of the reinforcing element. Furthermore, by selecting the spring stiffness, an actuating force for the bolt can be set particularly easily, which can be lower or higher depending on the structural requirements.

[0017] According to an advantageous embodiment of the reinforcing element according to the invention, the bolt is movable between a first end position and a second end position, wherein the first end position is defined by a stronger, in particular maximum, compression of the spring element compared to the second end position and the second end position is defined by a stop formed in the recess.

[0018] This design of the end positions represents a very simple yet highly effective mechanism, allowing the bolt to be moved over relatively large distances with simple manual force, thus achieving a high degree of flexibility in positioning the profile elements relative to each other. Upon reaching its mounting position on the post profile, the reinforcing element can immediately establish a functional connection with the post profile without any additional effort, reliably preventing potential misalignment.

[0019] The core element is aus Made from extruded aluminum.

[0020] This allows for individual and needs-based shaping. Reference should be made to the preferred embodiments according to claims 2-9.

[0021] The core section preferably refers to the area of ​​the web profile from which the webs of the web profile extend outwards, particularly radially. Such a core section can have a closed contour in cross-section perpendicular to the longitudinal extent of the web profile, in particular circular, and preferably hollow.

[0022] Plastic hollow profiles are known to be provided inside with so-called steel reinforcements, which, e.g. by forming, correspond in their geometric outer contour to the hollow chambers of the plastic hollow profiles and can be inserted into them.

[0023] When constructing a window facade, several window elements are installed side by side. Especially with floor-to-ceiling windows, building regulations require that the sill area be designed to prevent falls. To comply with these regulations, the intersections of mullion and transom profiles can be reinforced with additional, preferably metallic, insertable core elements, in addition to the steel reinforcements. These core elements extend longitudinally into sections within the steel reinforcements. As standard, these reinforcements have smooth inner surfaces and are designed for the easy installation of stabilizing core elements.

[0024] The core elements made of extruded aluminum can, for example, generally be shaped into irregular profiles, e.g. prismatic profiles or the aforementioned web profiles.

[0025] For use in the underlying embodiment, the core elements are designed such that they are supported in the corner areas by the surrounding steel reinforcement and can be positively connected to it. The aim is to enable easy and slip-resistant positioning. Each core element has a connected, web-like geometry in cross-section, preferably with a substantially uniform wall thickness. This ensures a more uniform force distribution with maximum material savings and minimal weight.

[0026] At each web running directly along the inner contour of the steel reinforcement, at least two spaced-apart webs, e.g., cam-shaped webs, are preferably formed at its end in the longitudinal direction of the core element, contacting the inner wall of the steel reinforcement. The core elements are thus positioned to prevent tilting and form a zero-gap gap to the steel reinforcement. The preferably cam-shaped webs are, for example, spaced as far apart as possible and can preferably be provided with a chamfer if necessary to facilitate insertion into the steel reinforcement.

[0027] The core elements are characterized by corner areas which, in addition to ensuring a precise fit, contribute to increased stability in the corresponding corner areas of the steel reinforcement. At least two corner areas are preferably formed as two arrow-shaped legs at the respective web ends, which, in the assembled state, correspond to the contour of the steel reinforcement.

[0028] At least one continuous web extending between two corner areas provides material for a fastening screw that connects the core element to the steel reinforcement. This continuous web can form a closed-section hollow chamber with two webs extending radially from the core.

[0029] Furthermore, the core element has at least one first guide channel for receiving the bolt and preferably a second guide channel for receiving the guide pin, which carries the spring element, preferably wherein the wall of the guide channels has the greatest wall thickness of the core element. Such core elements can also be used as T-connections. In this case, it is possible to cut a thread in the guide channel, preferably the one located in the core pull, which again requires a somewhat greater wall thickness.

[0030] The core element has a recess, in particular one that is machined, for example by milling. Furthermore, the core element has at least one guide channel for receiving the bolt.

[0031] The recess is located on the side of the core element facing away from the closed hollow chamber. The recess extends beyond the core pull and into the hollow chamber.

[0032] For example, through machining, the core pull in the recess area can preferably be completely removed. The two end regions of the core element are then only connected via remaining wall sections of the hollow chamber.

[0033] The bolt preferably has a recess on its circumferential surface into which a stop element, e.g., a retaining ring, can be received. The recess provides space for a guide pin onto which the spring element, e.g., a coil spring, is mounted up to the head of the guide pin. The bolt and guide pin are preferably designed as cylindrically shaped screws, in particular identical screws. The bolt and guide pin associated with the reinforcing element are each displaceable such that they can move relative to the core element along a longitudinal axis of the recess, with the bolt engaging with the post profile and / or its steel reinforcement profile in a preferably positive-locking and / or frictional engagement. For this engagement, the bolt rests in a bore of the post profile or its steel reinforcement profile.

[0034] In the illustrated embodiment, the head of the bolt interacts with the head of the guide pin in a force-fit manner. The bolt is movable between a first end position and a second end position, the first end position being defined by a stronger, preferably maximum, compression of the spring element, and the second end position being determined by a stop element mounted on the bolt that abuts the formed stop in the recess of the metal core, and the bolt completely protrudes through the post profile. According to the invention, the guide pin serves as a carrier for the spring element and transmits the force generated by the spring element to the bolt. The bolt then performs the thrust movement, so that it penetrates the adjacent post profile. In principle, any solid pin element of any shape is suitable for this force transmission mechanism.In this example, a standard cylinder head screw is used for this process, e.g. with an Allen head or Torx head.

[0035] Furthermore, the invention relates to a method for assembling a reinforcement element for windows and / or doors or the like, comprising at least a bar profile and a mullion profile made of hollow plastic profiles, each of which is provided with steel reinforcements, and which comprises the following steps.

[0036] Insert the bolt into the recess and guide it into the channel so that the bolt head is positioned within the recess and rests against the stop at the first end. Alternatively, a headless bolt can be used. This is inserted into the guide channel at the first end in the same way, from inside the recess. It is crucial that the full width of the recess remains freely accessible to allow the next step to be carried out.

[0037] This consists of inserting the guide pin with the attached spring element into the recess and guiding it into a second guide channel at the other end of the core element such that the head is positioned in the recess. The guide pin is designed with a diameter smaller than that of the second guide channel, allowing it to be inserted and passed through it. The attached spring element, on the other hand, has an outer diameter that must be larger than that of the guide channel through which the guide pin is guided. Preferably, the outer diameter forms a stop for the spring element.

[0038] In the next step, the spring element is compressed by applying pressure to the bolt towards the interior of the core element, allowing the bolt to be pushed back by the amount of compression. This enables a stop element to be attached to the bolt in the next step, for example, by inserting it into a recess on the bolt. A further step in the assembly of the reinforcement element involves resetting the spring force of the spring element, which moves the bolt through the guide channel in which it is pre-assembled until the stop element on the bolt abuts the stop at the end of the first section. The stop element mechanically limits the bolt's advance movement, specifically preventing the guide pin from being pushed out of its guide channel by the spring element.

[0039] Finally, the reinforcement element is inserted into a steel reinforcement and both are securely fastened together with a fixing screw. The pre-assembly of the reinforcement element is complete.

[0040] Furthermore, the invention relates to a method for the form-fit and force-fit fixing of a profile arrangement for windows and / or doors or the like, comprising at least a bar profile and a mullion profile, plastic hollow profiles, each of which are provided with steel reinforcements, which comprises the following steps.

[0041] The pre-assembled reinforcement element, in which the bolt's stop is engaged and the bolt and guide pin are in contact, is inserted into the steel reinforcement and screwed to it using the fastening screw. The steel reinforcement may have been removed from the hollow plastic profile beforehand for this purpose.

[0042] The steel reinforcement with reinforcing element is inserted flush into the hollow chamber of the bar profile from the open end, and preferably the bar profile, the steel reinforcement and the reinforcing element are screwed together by means of a fastening screw, in particular wherein the core element is positioned completely concealed in the bar profile.

[0043] The next step involves attaching the post profile to the free end of the bolt and butting it into contact with the pre-assembled reinforcement element.

[0044] As a preliminary step, a connector plate with tabs was first screwed into the bar profile using fastening screws. Figure 2c The partial section shows two of the fastening screws.

[0045] Figure 2bshows the next step, which requires pushing back the protruding, free end of the bolt against the spring return force of the spring element and attaching the second locking profile.

[0046] Finally, in accordance with Figure 2c , the final form-fit and / or force-fit fixing of the at least one bar profile with the at least one post profile, by positioning the second bar profile so that the bore hole with the guide channel of the core element in the next inserted reinforcement element is congruent with one another and the guide pin, through the spring force of the spring element, drives the bolt with the stop element through and protrudes through the bar profile to the stop. In The moment the borehole of the post profile aligns with the through hole of the bar profile, the pre-tensioned bolt springs completely into the corresponding opening through the post profile and protrudes from it.

[0047] The fastening screws are screwed firmly into the steel reinforcement of the post profile from the freely accessible side of the connector plate using tabs.

[0048] Additional bar profiles can be attached to the protruding free end of the bolt to form a window front. A pre-assembled reinforcement element was also installed in this bolt.

[0049] This process can be repeated for any number of adjacent windows, resulting in a "steel in steel" solution, as in the task to be fulfilled, which meets the static requirements for fall protection.

[0050] The connector plate with tabs is installed at the interface between the transom and mullion profiles. The connector plate with tabs is attached from its front side with, for example, four screws into the plastic of the profile adjacent on one side, and from its back side with, for example, four screws in the opposite direction into the steel reinforcement of the profile adjacent on the other side.

[0051] To increase stability, the reinforcing element, with its core element and through-bolts, forms a continuous and resilient metal skeleton.

[0052] The invention is explained in more detail below with reference to the drawings.

[0053] The figures show, in detail: Figs. 1a - 1d show the reinforcing element (100) in the various assembly steps of the core element and bolt. Figs. 1e - 1h show the reinforcing element (100) in the various assembly steps of the core element and bolt with the spring element mounted. Fig. 2a shows the inserted reinforcing element with the connector plate mounted, with tabs at the open end of the transom profile in preparation for the butt joint with the mullion profile. Fig. 2b shows the transom and mullion profile connected with the reinforcing element and the next transom profile in alignment. Fig. 2c shows a partially sectioned view of two transom profiles in a fixed state of the reinforcing element on the mullion profile in an isometric view. Fig. 3a shows a partially sectioned view of a transom profile in a fixed state of the reinforcing element on the mullion profile in a top view.Figure 3b shows a sectional view of the mounted reinforcement element in the beam profile with core element in the steel reinforcement along the section line AA.

[0054] In the characters Figure 1a - 1d A reinforcing element 100 is shown in the various assembly steps of core element 10 and bolt 20 according to the invention. The reinforcing element 100 consists of a base body, which is an extruded workpiece made of aluminum and is hereinafter referred to as core element 10. The core element has a recess 11, which is produced by a machining process, preferably by milling. The mutually facing surfaces of the recess 11 at the two end regions 10a and 10b form the stops 13", 13', which limit the travel of the subsequently inserted bolt 20 and the guide pin 30.

[0055] The core element 10 has a connected, web-like geometry in cross-section, with essentially uniform wall thickness. Furthermore, the core element 10 has two guide channels 12', 12", for receiving a bolt 20, as shown in Figure 1b depicted and a guide pin 30 according to Figure 1d The bolt 20 – in the described embodiment a cylinder head screw – has a groove 23 on its circumferential surface. The bolt 20 is first positioned lengthwise in the recess 11 and inserted with its free end into the first guide channel 12" at the first end region 10a and guided completely through it until the bolt head 21 abuts the stop 13', according to Figure 1c .

[0056] The recess provides space for a guide pin 30, onto which a spring element 40, for example a coil spring, is mounted up to the head 31, see Figure 1dThe wound spring element 40 has an outer diameter that must be larger than the inner diameter of the second guide channel 12' through which the guide pin 30 is guided. The outer diameter forms a stop for the spring element 40.

[0057] The guide pin 30 is positioned lengthwise in the recess 11 and its free end is inserted into the through hole 12' and guided completely through it until the spring element 40, preferably maximally compressed, abuts the stop 13", according to Figure 1f . In the free space in the recess 11, the bolt 20 can be withdrawn. In this case, both heads 31, 21 contact each other, as shown in Figure 1g depicted.

[0058] In Figure 1h The figure shows that the area of ​​the indentation 23 of the bolt 20 is located in the area of ​​the recess 11 and that the stop element 24 can be attached in this position.

[0059] By resetting the spring force of the spring element 40, the bolt 20 is pushed through the guide channel 12", in which it is pre-assembled, until the stop element 24 on the bolt 20 abuts the stop 13'. The stop element 24 mechanically limits the advance movement of the bolt 20. This creates a preload on the spring 40, thus securing the guide pin 30 against falling out of its guide channel 12'.

[0060] The bolts 20 and guide pin 30 associated with the reinforcement element are displaceable in such a way that they can be moved relative to the core element along a longitudinal direction of the recess 11.

[0061] According to the illustrated embodiment of the Figure 1a - 1h , the head 21 of the bolt 20 contacts the head 31 of the guide pin 30 in a force-fit manner.

[0062] The bolt 20 is movable between a first end position and a second end position, the first end position being defined by a stronger compression of the spring element 40 and the second end position being determined by a stop element 24 mounted on the bolt 20, which abuts the formed stop 13' in the recess 11 of the metal core 10.

[0063] According to the invention, the guide pin 30 serves as a carrier for the spring element 40 and transmits the force triggered by the spring element 40 to the bolt 20, which performs a thrust movement. Figure 1h The image shows the fully pre-assembled reinforcement element 100 in cross-section.

[0064] The Figure 2a , 2b and 2cThe following steps show the method for assembling the cross connector 100 for windows and / or doors or the like, consisting of the bar profiles 50', 50" and a mullion profile 60, comprising hollow profiles, each provided with steel reinforcements 70, 70', 70".

[0065] The pre-assembled reinforcement element 100, in which the stop element 24 of the bolt 20 is in stop 13' and the heads of bolt 20 and guide pin 30 contact each other, is inserted into the steel reinforcement 70' essentially flush and screwed to it by means of the fastening screw 71', see Figure 2c .

[0066] The steel reinforcement 70', 70" which was preferably removed beforehand is now inserted flush from the open end 52 into the hollow chamber of the transom profile 50' and the transom profile 50', 50", the steel reinforcement 70' and the reinforcing element 100 are screwed together by means of the fastening screw 51', 51, wherein the core element 10 is positioned completely concealed in the transom profile 50', according to Figure 2a The reinforcing element 100 is concealed within the bar profile 50' and only the free end of the bolt 20 protrudes from the bar profile 50'.

[0067] In Figure 2aThe connector plate with tabs 80 is shown, which is mounted between the transom profile 50' and the post profile 60. The connector plate 80 is made of metallic material and serves the purpose of securely connecting the transom and post profiles 50' and 60. The connector plate 80 is screwed into the transom profile 50' using, for example, four fixing screws 81. These screws cut into the PVC. The position of the fixing screws 81 is also shown in Figure 2c The connector plate 80 is additionally connected to the post profile 60 from its rear side using, for example, four fastening screws 82. These fastening screws 82 engage in the steel reinforcement 70. The position of the fastening screws 82 is shown in the assembled state. Figure 3a depicted.

[0068] Figure 2a shows the next step, which consists of attaching the post profile 60 to the open end of the bolt 52 and butting it against the pre-assembled reinforcement element 100.

[0069] As a preliminary step, the connector plate with tabs 80' was first screwed to the 50" with, for example, four fastening screws 81' in the 50" bar profile. Figure 2c The partial section shows two of the fastening screws 81'.

[0070] Figure 2b shows the next step, which requires pushing back the protruding, free end of the bolt 20 against the spring return force of the spring element 40 and attaching the second locking profile 50".

[0071] Finally, in accordance with Figure 2cThe final form-fit and / or force-fit fixing of the at least one transom profile 50" to the at least one post profile 60, by positioning the second transom profile 50" until the bore 61 and the guide channel 12" of the core element 10 in the next inserted core element 10' are aligned, and the bolt 20, due to the spring force of the spring element 40, penetrates the post profile 60 with the stop element 24 up to the stop 13' and projects into the transom profile 50". At the moment when the bore 61 of the post profile 60 and the guide channel 12" of the transom profile 50" are aligned, the pre-tensioned bolt 20 springs completely into the corresponding opening through the post profile 60 and protrudes from it.

[0072] In a window front consisting of a series of windows characterized by mullion-transom intersections, a pre-assembled reinforcement element 100 with core element 10, bolt 20, guide pin 30, and spring 40 is used to the left of the mullion profile. Subsequently, to the right of the mullion profile 60, a core element 10' without bolt 20 is placed on the bolt 20 that projects through the transom profile 60. This sequence is repeated along the entire window front.

[0073] The four fastening screws 82' are screwed firmly into the steel reinforcement 70 of the post profile 60 from the freely accessible side of the connector plate with tabs 80'.

[0074] Figure 3aFigure 1 shows a partially cutaway view of a bar profile 50' in a fixed position of the reinforcing element 100 on the post profile 60 in a top view. The core element 10 is shown in the recess 11 with the guide pin 30 and the mounted spring element 40. The bolt 20 is in contact with the guide pin 30. The spring element 40 is extended, particularly to its maximum extent, and the travel of the bolt 20 is shown in its end position by the stop element 24, which in turn is limited by the stop 13'. The reinforcing element 100 is received in the steel reinforcement 70' and firmly connected to the steel reinforcement 70' by means of the fastening screw 71.

[0075] The steel reinforcement with reinforcing element 100 is inserted as a unit into the transom profile 50' and the reinforcing element 100 is positioned and fixed in the plastic profile with the fastening screw 51. The connector plate with tabs 80 closes the end face of the transom profile 50'. The fastening screws 81 fasten the connector plate with tabs 80 to the plastic transom profile 50' on one side, and from the other side of the connector plate with tabs 80, the fastening screws 82 secure the connector plate with tabs 80 to the steel reinforcement 70 of the post profile. The steel reinforcement 70 is present throughout the entire length of the post profile 60.

[0076] Figure 3b shows a sectional view of the mounted reinforcement element 100 in the bar profile 50" with metal core 10' in the steel reinforcement 70" along the section line AA.

[0077] The core elements 10, 10' are made of extruded aluminum formed into an irregular, essentially rectangular profile. The core elements 10, 10' are designed such that they are supported in the corner areas by the surrounding steel reinforcement 70, 70" and can be positively connected to it.

[0078] The core element 10 has a connected, web-like geometry in cross-section, with essentially uniform wall thickness.

[0079] On each web that runs directly along the inner contour of the steel reinforcement 70, at least two spaced-apart, e.g. cam-shaped, webs 14 are formed in the longitudinal direction of the metal core, which contact the inner wall of the steel reinforcement 70.

[0080] The metal core 10 is characterized by corner areas in the form of two arrow-shaped legs 15, which in the assembled state correspond to the contour of the steel reinforcement 70.

[0081] At least one continuous web 16 extending between two corner areas provides material for the fastening screw 71'.

[0082] The fastening screw 71' connects the metallic elements together, namely the steel reinforcement 70' and the metal core 10. The fastening screw 51 connects the plastic bar profile 50" to the reinforcement element 100, consisting of metallic materials.

[0083] In this sectional view, the four fastening screws 82" are visible, which connect the connector plate with tabs 80' to the post profile 60 at four points. Also shown are the four fastening screws 81', which cut into the rail profile 50" from the rear side of the connector plate with tabs 80'. Reference symbol list

[0084] 100 Reinforcement element 10, 10' Core element 11 Recess 12', 12" Guide channels 13', 13" Stop 14 Cam-shaped webs 15 Leg 16 Continuous web 20 Bolt 21 Bolt head 22 Bolt thread 23 Groove 24 Stop element 30 Guide pin 31 Head of guide pin 40 Spring element 50', 50" Latch profile 51, 51' Fastening screw (latch profile made of PVC + steel reinforcement + metal core) 52 Open end 60 Post profile 61 Borehole 70 Steel reinforcement (in post profile) 70', 70" Steel reinforcements (in the latch profiles) 71, 71' Fastening screw (steel reinforcement + metal core) 80, 80'Connector plate with tabs 81, 81'Fastening screws in plastic 82, 82'Fastening screws in steel

Claims

1. Reinforcement element (100) for static reinforcement of a connection between a mullion profile (60) and at least one transom profile (50', 50"), comprising a. an elongate core element (10), in particular a metallic core element (10), which, at least regionally, is pushable at the open end of a transom profile (50', 50") and in the longitudinal extent direction of the transom profile (50', 50") into the hollow steel reinforcement profile (70') thereof, in particular is fastenable therein, b. wherein, in the core element (10), there is received a pin (20) which is displaceable in the longitudinal extent direction of the core element (10) therein, and c. the pin (20) is movable by means of a force-generating element (40) arranged in the core element (10) into a position protruding from the core element (10), and d. the pin (20) is at least regionally pushable into the core element (10) counter to the action of the force-generating element (40), and e. the core element (10) has a first and a second end region (10a, 10b) which are spaced apart in the longitudinal extent direction and between which a clearance (11) is arranged, wherein the first end region (10a) has a first guide passage (12") in which the pin (20) lies, and the second end region (10b) has a second guide passage (12') in which a guide peg (30) lies, the latter bearing a spring element (40), in particular a helical spring (40), as a force-generating element (40), wherein the pin (20) is acted on by the force of the spring element (40) at its end lying in the core element (10), characterized in that f. the core element (10) is formed from a web profile composed of extruded aluminium, wherein the guide passage (12") of the pin (20) and the guide passage (12') of the guide peg (30) are situated in the core extraction region of the web profile, and, g. on one side of the core extraction region, two webs with free ends, in particular of arrow-shaped form, are formed integrally on the core extraction region, and, on the other side of the core extraction region, two webs which are part of the wall of a closed hollow chamber are formed integrally, wherein h. the clearance is situated on that side of the core element which is directed away from the closed hollow chamber, and reaches beyond the core extraction region into the hollow chamber.

2. Reinforcement element according to Claim 1, characterized in that the spring element (40) has an outer diameter which is greater than the diameter of the second guide passage (12').

3. Reinforcement element according to either of the preceding claims, characterized in that the pin (20) and the guide peg (30) are each designed as screws, in particular as cylinder head screws, preferably as identical screws, whose screw heads are in contact with one another.

4. Reinforcement element according to one of the preceding claims, characterized in that the length of the clearance (11) in the longitudinal extent direction is adapted to the pin (20) and the guide peg (30) in such a way that, in particular is longer than each of the two elements (20, 30) by an allowance such that, the pin (20) and the guide peg (30) are successively insertable into their respective guide passages (12', 12") by way of the clearance (11).

5. Reinforcement element according to one of the preceding claims, characterized in that, in front of its end lying in the core element (10), in particular in front of the screw head, the pin (20) bears a stop element (24), in particular a securing ring (24), which limits the range of movement of the pin (20), in particular by way of contact between the stop element (24) and a stop surface (13'), directed towards the second end region (10b), of the first end region (10a).

6. Reinforcement element according to Claim 5, characterized in that the pin (20) is movable between a first end position and a second end position, wherein the first end position is provided with the spring element (40) compressed to a greater extent in comparison with the second end position and the second end position is defined by the stop element (24) fitted to the pin (20).

7. Reinforcement element according to one of the preceding claims, characterized in that, in a state in which it protrudes to the maximum extent from the core element (10), the pin (20) passes completely through the mullion profile (60), in particular protrudes beyond the latter into an oppositely situated transom profile (50"), preferably into a core element (10) fitted therein without a pin, when a transom profile (50') is fitted to a mullion profile (60).

8. Butt joint between a mullion profile (60) and at least one transom profile (50', 50"), in which the mullion profile (60) and the at least one transom profile (50', 50") have been or are fastened to one another with a 90-degree abutment by means of fastening elements, characterized in that, at the open end of the transom profile (50') directed towards the mullion profile (60), a reinforcement element (100) according to one of the preceding claims is inserted into the hollow steel reinforcement profile (70') of the transom profile (50'), the pin (20) of said reinforcement element protruding into the reinforcement profile (70) of the mullion profile (60).

9. Butt joint according to Claim 8, characterized in that the pin (20) protrudes completely through the mullion profile (60) and into a further transom profile (50") situated opposite the transom profile (50'), in particular into a core element (10) without a pin (20) of a reinforcement element (100) according to one of the preceding Claims 1 to 13.

10. Method for producing a butt joint of a mullion profile (60) and at least one transom profile (50', 50") of a window or door, in which the transom and mullion profiles (50', 50", 60) are formed from plastic hollow profiles with steel reinforcement profiles (70, 70', 70"), characterized by the following steps: a. inserting a reinforcement element (100) according to one of the preceding Claims 1 to 7 into the steel reinforcement profile (70') of a transom profile (50') and fastening it therein, b. bringing the transom profile (50') and the mullion profile (60) into abutting contact and introducing the pin (20) into a bore (61) of the mullion profile (60), preferably one which passes completely through the mullion profile (60) and its steel reinforcement profile (70).

11. Method according to Claim 10, characterized in that the pin (20) passing completely through the mullion profile (60) is pushed back counter to the acting force, and, opposite the first transom profile (50'), a second transom profile (50") is attached in an abutting manner to the mullion profile (60), after which, by the application of force, the pin (20) is pushed into the second transom profile (50"), in particular into a guide passage of a core element which is inserted into the steel reinforcement profile (70") of the second transom profile (50").

12. Method for producing a reinforcement element according to one of the preceding Claims 1 to 7, characterized by the following steps: a. producing a clearance (11) between two end regions (10a, 10b) of an extruded aluminium profile in order to form a core element (10), b. inserting a pin (20) with a head (21) into the clearance (11) and introducing the pin (20) into a first guide passage (12") at a first end region (10a), c. inserting a guide peg (30) with a head (31), with a spring element (40) mounted on the guide peg (30), into the clearance (11) and introducing it into the second guide passage (12') in such a way that its head (31) is positioned in the clearance (11), d. compressing the spring element (40), in particular by pushing on the pin (20) in the direction of the interior of the core element (10). e. mounting a stop element (24) onto the pin (20), in particular a securing ring (24) into a recess (23) on the pin (20).