Locking system for a building opening

Abstract

A locking system for a building opening, comprising a pivotable self-supporting sash frame, wherein the sash frame is formed from a plurality of first plastic profiles (22) connected to one another by thermal joining, wherein a first hollow profile (24) made of a metal alloy is arranged in at least one recess of the first plastic profiles (22), wherein a longitudinal axis of the respective first hollow profile (24) extends parallel to a longitudinal axis of the respective first plastic profile (22), wherein the first hollow profiles (24) are connected to one another within the first plastic profiles (22) in corner regions of the sash frame via corner connectors for mechanical coupling, wherein the first hollow profiles (24) coupled via the corner connectors form a self-contained, self-supporting metal frame, wherein the metal frame is designed to bear the static load of the sash frame.

Description

Technical field

[0001] The following descriptions concern a locking system for a building opening, which provides high static stability and high resistance to deformation. Furthermore, the following descriptions concern a door leaf and a frame fixed to the building structure. Technical background

[0002] It is well known that metal frames, preferably made of aluminum, are typically used for doors. With conventional systems made of plastic profiles, the structure usually requires additional reinforcement with a panel infill, which is thus significantly integrated into the load-bearing structure. This is particularly problematic when dark surfaces are exposed to direct sunlight, as the infill expands considerably under the influence of heat and transfers thermal stresses directly to the structure. This often leads to deformation and, consequently, leaks in the door. Furthermore, the maximum load-bearing capacity of such conventional constructions is considerably limited.

[0003] There is a need to provide a locking system that avoids thermally induced deformations and safely absorbs high static loads.

[0004] Based on this situation, the task at hand is to propose a closure system in which static stability and dimensional accuracy can be improved under the influence of temperature. Description - Technical Solution

[0005] The present problem is solved by the features of the independent claims. Advantageous embodiments are specified in the dependent claims, the description, and the drawings. Where technically feasible, the teachings of the dependent claims or the descriptive features may be combined arbitrarily with the teachings of the main and dependent claims.

[0006] In particular, the problem is solved by a closure system for a building opening, comprising a pivotable self-supporting sash frame, wherein the sash frame is formed from a plurality of first plastic profiles connected to each other by thermal joining, wherein a first hollow profile made of a metal alloy is arranged in at least one recess of the first plastic profiles, wherein a longitudinal axis of the respective first hollow profile extends parallel to a longitudinal axis of the respective first plastic profile, wherein the first hollow profiles are connected to each other in corner areas of the sash frame via corner connectors for mechanical coupling, wherein the first hollow profiles coupled via the corner connectors form a self-contained, self-supporting metal frame, wherein the metal frame is designed to bear the static load of the sash frame.

[0007] The locking system for a building opening constitutes a structural unit, typically designed as a door. The pivoting, self-supporting sash frame is the movable element that enables the opening and closing of the building opening. A multitude of initial plastic profiles form the outer shell of the sash frame. These initial plastic profiles provide an attractive appearance, thermal insulation, and weatherproofing. This allows the assembly to utilize the energy-related advantages of plastic systems, resulting in high overall system energy efficiency. The first hollow profile, made of a metal alloy, acts as the primary reinforcing element within the recess of the initial plastic profiles. Corner connectors serve as heavy-duty connection points in the corner areas of the sash frame.The self-contained, self-supporting metal frame formed from the initial hollow profiles and corner connectors ensures that the entire mechanical, static, and dynamic load of the sash frame is borne exclusively by this metallic core structure. This allows the initial plastic profiles to be almost completely relieved of static load-bearing tasks. Consequently, sash frame deformation is prevented even under very high loads or with large dimensions. This allows the previously defined solution to be achieved.

[0008] The following sections explain advantageous aspects and subsequently describe preferred modified embodiments. Explanations, particularly regarding advantages and definitions of features, are essentially descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be explicitly stated.

[0009] Where ordinal numbers, such as "first," "second," etc., are used, for example to designate a component, an element, a process step, or a process action, these ordinal numbers are solely for differentiation in the designation and do not indicate any dependencies or sequences. This means, in particular, that a device does not need to have a "first component" to have a "second component." A device can also have a "first component" and a "third component" without necessarily having a "second component." Multiple units with the same ordinal number are also possible, for example, multiple "first components."

[0010] The term "thermal joining" preferably refers to welding the first plastic profiles at their miters. The term "metal alloy" preferably refers to a steel or aluminum alloy. In other words, the metal frame is intended to act as a separate and continuous supporting skeleton, concealed within the structure, while the plastic shell primarily serves as an enclosing and shaping element. The required properties for static load bearing and deformation resistance can be achieved, in particular, by connecting the first hollow profiles using "ECKMAXX" brand corner connectors.

[0011] Alternatively or additionally, the locking system can be designed with a building-mounted frame comprising at least one second plastic profile and a second hollow profile arranged in a recess of the second plastic profile. The second hollow profile is made of a metal alloy, and its longitudinal axis extends parallel to the longitudinal axis of the second plastic profile. The building-mounted frame with the second plastic profile and the second hollow profile arranged within it significantly reinforces the load-bearing structure of the outer frame. This ensures that the high static and dynamic loads of the self-supporting sash frame are reliably transferred to the adjacent masonry. This results in permanently stable operation and a substantial increase in the service life of the entire locking system.

[0012] Alternatively or additionally, a floating infill can be arranged within the self-supporting sash frame. Specifically, the infill is designed as a non-load-bearing element. The first hollow profiles, connected via corner connectors, form a closed, statically self-supporting sash frame that bears static loads independently of the infill. The infill has a height of 170 to 300 centimeters and a width of 70 to 150 centimeters. The floating infill, as a non-load-bearing element, ensures that the infill is completely decoupled from the static load-bearing function of the sash frame.This prevents thermally induced changes in length and expansion of the infill, such as those caused by intense sunlight, from being transferred as stresses into the sash frame. This results in extreme dimensional stability and freedom from warping of the entire locking system, ensuring smooth operation and a permanently tight seal even with very large infills.

[0013] Alternatively or additionally, the infill may be arranged in a guide on the sash frame in a form-fitting manner. In particular, the infill is supported circumferentially on the lower guide of the sash frame. Specifically, the infill is supported on at least one bearing element on the lower guide of the sash frame. In particular, expansion gaps are formed between the infill and the upper, left, and / or right guide of the sash frame. Specifically, the expansion gap(s) are provided to have a width of at least 0.3 centimeters, in particular at least 0.6 centimeters, and most preferably at least 1.0 centimeter.The expansion gap and the defined support at the lower guide ensure that the filling can expand freely in the designated directions under thermal stress, while remaining securely supported at the bottom. This prevents any force from the thermal expansion of the filling from being transmitted into the sash frame and its profiles. This results in the long-term preservation of the sash frame's geometry and the reliable operation of the entire locking system, even under extreme temperature fluctuations.

[0014] Alternatively or additionally, it may be provided that the at least one first plastic profile has a recess in the area of ​​the lock assembly for positioning the lock within the sash frame. In particular, it is provided that the first hollow profile has a recess or interruption in the area of ​​the lock assembly for positioning the lock within the sash frame. In particular, it is provided that the at least one first plastic profile has a reinforcing element, at least in the area of ​​the lock assembly. In particular, it is provided that the reinforcing element is arranged within a first groove on the first plastic profile, extending parallel to its longitudinal axis. In particular, it is provided that the first groove is arranged on a side of the at least one plastic profile facing the infill.In particular, it is provided that the first groove is arranged in the guide or formed as part of the guide of the first plastic profile. In particular, it is provided that the reinforcing element is designed as flat steel, especially as flat steel folded at least once. In particular, it is provided that the reinforcing element can be arranged in the first groove by a positive-locking arrangement on a first longitudinal edge and by means of a positive-locking clip on a second longitudinal edge. In particular, it is provided that the reinforcing element is connected to the first hollow profile by means of a plurality of fastening elements, in particular screws, which extend at least partially through the first plastic profile. The reinforcing element in the area of ​​the lock assembly ensures that the local weakening of the first hollow profile caused by the recess for the lock is statically compensated.This ensures that the sash frame retains high rigidity even in the critical area of ​​the lock assembly. This results in lasting dimensional stability and prevents local buckling or twisting of the profile under load or heat.

[0015] Alternatively or additionally, the first hollow profile may be forcefully and positively attached to the at least one first plastic profile by means of a plurality of fastening elements. In particular, it is provided that the fastening elements, especially screws, extend through the wall within a second groove of the first plastic profile to the first hollow profile. In particular, it is provided that the at least one first plastic profile has a cover strip for covering the fastening elements within the second groove. In particular, it is provided that the second groove is located on the closing side of the at least one plastic profile. In particular, it is provided that the second groove extends laterally next to the door lock along the longitudinal axis of the first plastic profile. In particular, it is provided that the cover strip is made of plastic.In particular, the cover strip is designed to be positioned in the second groove by means of a positive-locking arrangement on a first longitudinal edge and a positive-locking clip on a second longitudinal edge. The fastening of the first hollow profile to the first plastic profile on both sides using the fasteners ensures that both components form a compact and structurally reinforced unit. This allows the static properties of the metal frame to be optimally utilized and reduces stresses in the plastic. This results in increased stability of the sash frame and improved sealing against external influences.

[0016] Alternatively or additionally, the first and second plastic profiles can be geometrically aligned in such a way that, when closed, they lie flush with each other on an interior surface in a common plane. In particular, it is provided that the first and second plastic profiles are geometrically aligned in such a way that, when closed, they lie flush with each other on an exterior surface of a building in a common plane. Specifically, it is provided that the inner edges of the outer profile webs of the first and / or second plastic profile, facing the wall, have a chamfer or bevel to minimize the visible edge of the profile. The flush arrangement of the profiles results in a visually continuous and flat surface without any disruptive steps.This allows a wide variety of modern fittings and hinges to be integrated without additional modifications. This results in a high-quality aesthetic appearance and improved energy efficiency through the reduction of thermal bridges.

[0017] Alternatively or additionally, the recess of the at least one first plastic profile may be designed to receive a first hollow profile with a square cross-section. In particular, it is provided that at least one elastically deformable first web is formed in the recess of the first plastic profile to forcefully engage the first hollow profile against an opposing wall within the recess. Specifically, it is provided that the at least one first web extends over the entire length of the recess.In particular, it is provided that at least one, and preferably at least two, ribs are molded onto opposite walls of the recess within the first plastic profile to position the first hollow profile within the recess and / or to space the first hollow profile away from at least one of the walls within the recess. The elastically deformable first rib ensures that the first hollow profile is pressed firmly against a defined inner wall of the plastic profile under spring pressure during assembly. This allows for precise positioning of the metal reinforcement before the final screw connection. This results in higher manufacturing accuracy and improved force transmission between the metal and plastic.

[0018] Alternatively or additionally, it can be provided that at least one elastically deformable second web is molded into the recess of the at least one second plastic profile to force-fit the second hollow profile towards an opposing wall within the recess. In particular, it is provided that the at least one second web extends over the entire length of the recess. The elastically deformable second web ensures that the second hollow profile rests precisely and without play, even within the building-fixed frame. This allows hinges or fittings to act directly upon a stably supported metal wall. This results in more secure installation and increased load-bearing capacity of the entire frame system.

[0019] Alternatively or additionally, the first and / or second hollow profile may be positioned directly against the outermost profile wall of the respective plastic profile within the respective recess. In particular, the outermost profile wall is intended for the attachment and / or mounting of door hinges, specifically to enable direct and deformation-free force transmission from the door hinges to the first and / or second hollow profile. Specifically, door hinges may be fastened to a wall of the first and / or second hollow profile using blind rivet nuts. In particular, the blind rivet nuts form a load-bearing internal thread in the respective hollow profile to accommodate the fastening screws of the door hinges.By using blind rivet nuts directly in the adjacent metal profile, a high-strength threaded connection is created that far exceeds the strength of simple sheet metal screws. This allows door hinges to be fastened with a significantly higher torque without deforming the plastic profile. As a result, even very heavy door leaves are held securely in position permanently, reliably preventing the hinges from sagging or loosening. Alternatively or additionally, the first plastic profile can be designed with a groove for at least the partial integration of a hardware element.In particular, the first fitting groove is geometrically positioned along a longitudinal axis of the first hollow profile and the corner connectors arranged therein to enable centered mechanical screwing of the corner connectors to the first hollow profile. Specifically, a defined cavity for receiving the screw heads of the corner connectors is formed between the bottom of the first fitting groove and the first hollow profile. Furthermore, through holes for mechanical screwing are formed in the first fitting groove, which can be closed with watertight caps to prevent moisture ingress. Positioning the first fitting groove along the longitudinal axis of the first hollow profile ensures precise alignment of the corner connectors with the plastic profiles.This allows the corner connectors to be screwed into particularly favorable static zones of the metal frame. This results in maximum strength of the corner connections and prevents the fasteners from pulling out under high loads.

[0020] Alternatively or additionally, the recess of the second plastic profile and the second hollow profile may have a cross-sectional geometry with a re-entrant angle. In particular, the cross-sectional geometry of the second hollow profile is L-shaped. The second plastic profile is also provided with a corresponding cross-sectional geometry to provide a receiving space. Specifically, the receiving space includes a channel for the positive-locking and flush-mounted reception of frame-side housings for concealed door hinges, as well as for the precise axial positioning of strike plates for a lock assembly to ensure smooth opening and closing. The re-entrant angle cross-sectional geometry creates a defined space for integrating functional components within the profile contour.This allows for the precise installation of the latest generation of concealed hinges and strike plates without any additional machining of the plastic profiles. This results in a visually flawless integration of the hardware components and a high level of functional reliability for the locking mechanism.

[0021] Alternatively or additionally, the second plastic profile can be provided with a second fitting groove for at least the partial integration of a hardware element. This second fitting groove in the second plastic profile ensures that hardware elements can also be securely and accurately mounted on the frame side. This enables standardized assembly of frame components for the locking mechanism. This results in time savings during production and a high degree of reproducibility in assembly quality.

[0022] The problem is further solved by a door leaf for a locking system, which can be designed and further developed in particular as described above, comprising a pivotable self-supporting leaf frame, wherein the leaf frame is formed from a plurality of first plastic profiles connected to one another by thermal joining, wherein a first hollow profile made of a metal alloy is arranged in at least one recess of the first plastic profiles, wherein a longitudinal axis of the respective first hollow profile extends parallel to a longitudinal axis of the respective first plastic profile, wherein the first hollow profiles are connected to one another in corner regions of the leaf frame via corner connectors for mechanical coupling within the first plastic profiles, wherein the first hollow profiles coupled via the corner connectors form a self-contained, self-supporting metal frame.wherein the metal frame is designed to bear the static load of the sash frame, wherein a floating infill is arranged in the sash frame, wherein in particular the infill is designed as a non-load-bearing element.

[0023] The door leaf, which can be designed and further developed as described above, represents the central movable component of the locking system. The self-contained metal frame located inside the first set of plastic profiles ensures that the door leaf possesses extremely high inherent rigidity. This allows the door leaf to remain fully functional even without the stabilizing effect of the infill or the plastic profiles. This results in lasting geometric precision of the door leaf, reliably preventing sagging or warping throughout its entire service life.

[0024] The problem is further solved by a building-fixed frame for a locking system, which can be designed and further developed in particular as described above, comprising at least one second plastic profile and a second hollow profile arranged in a recess of the at least one second plastic profile, wherein the second hollow profile is made of a metal alloy and a longitudinal axis of the second hollow profile extends parallel to a longitudinal axis of the at least one second plastic profile, wherein the recess of the second plastic profile and the second hollow profile have a cross-sectional geometry with a re-entrant angle, wherein in particular the cross-sectional geometry of the second hollow profile is L-shaped, wherein in particular the second plastic profile has a corresponding cross-sectional geometry to provide a receiving space.wherein in particular the receiving space has a channel for the form-fitting and flush mounting of frame-side housings of concealed door hinges.

[0025] The fixed frame, which can be designed and further developed as described above, forms the static basis for mounting the door leaf. The L-shaped cross-sectional geometry of the second hollow profile, in combination with the receiving space in the second plastic profile, allows for the complete integration of solid hardware components into the profile. This enables the installation of concealed hinges with high load-bearing capacity without weakening the frame structure. This results in superior mechanical strength of the frame while maintaining a flush and aesthetically pleasing appearance. Brief description of the drawings

[0026] A preferred technical solution is explained in more detail below with reference to the accompanying drawings and preferred embodiments. The term "figure" is abbreviated as "Fig." in the drawings.

[0027] The drawings show Fig. 1 a perspective view of a first embodiment of a locking system; Fig. 2 a cross-sectional view of a further embodiment of the locking system in the area of ​​the door hinges; and Fig. 3 a cross-sectional view of another embodiment of the locking system with integrated fittings. Detailed description of the drawings

[0028] The described embodiments are merely examples that can be modified and / or supplemented in various ways within the scope of the claims. Each feature described for a particular embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a particular claim category can also be used accordingly in an embodiment of a different claim category.

[0029] Fig. Figure 1 shows a perspective view of a locking system 10 for a building opening. The locking system 10 has a fixed frame 12 and a self-supporting door leaf 14 pivotally mounted therein. The door leaf 14 is connected to the fixed frame 12 by means of several door hinges 16. A panel 18 is arranged in the door leaf 14 as a non-load-bearing element. Expansion gaps are formed between the panel 18 and the door leaf 14 on the upper, left, and right sides, which allow for thermal expansion of the panel 18. On the lower side, the panel 18 is supported by bearing elements on a guide 20 of the door leaf 14.

[0030] Fig. Figure 2 shows a cross-sectional view of the locking system 10 in the area of ​​the door hinges 16. The upper part of the view shows the frame of the door leaf 14, which is formed from a first plastic profile 22. A first hollow profile 24, which has a square cross-section and is made of a metal alloy, is arranged in a recess of the first plastic profile 22. The first hollow profile 24 is positioned directly against an outermost profile wall of the first plastic profile 22. At least one elastically deformable first web 26 is formed in the recess of the first plastic profile 22 for the force-fit connection of the first hollow profile 24. Ribs 28 are also arranged within the recess to space the first hollow profile 24 from the walls. The first plastic profile 22 has a first groove 30 on a side facing the infill 18.A reinforcing element 32, designed as a flat steel bar, is arranged in this first groove 30. The reinforcing element 32 serves for additional stiffening, in particular to absorb thermal stresses. A second groove 34 is formed on one closing side of the first plastic profile 22. Fastening elements are arranged in this second groove 34, which connect the first plastic profile 22 to the first hollow profile 24, the second groove 34 being closable by a cover strip. In the lower part of the . Fig. Figure 2 shows the fixed frame 12 with the second plastic profile 36, in whose recess the second hollow profile 38 is arranged. The first plastic profile 22 and the second plastic profile 36 are geometrically aligned such that, when closed, they lie flush with each other in a common plane on both an interior and an exterior surface. The door hinge 16 is fastened directly into the walls of the hollow profiles 24 and 38 by means of blind rivet nuts 40, thereby forming a load-bearing internal thread for receiving fastening screws 42.

[0031] Fig.Figure 3 shows a further cross-sectional view of the locking system 10 to illustrate the integration of fittings. The first plastic profile 22 has a first fitting groove 44 for receiving a fitting element, which is positioned in the longitudinal axis of the first hollow profile 24. A cavity 46 is formed between a groove base of the first fitting groove 44 and the first hollow profile 24. This cavity 46 serves to receive the screw heads of the corner connectors, which close the load-bearing metal frame inside. Through holes for mechanical screw fastening are provided in the first fitting groove 44; these can be closed by watertight cover caps. The building-fixed frame 12 has a receiving space with a channel 48, which serves for the positive-locking reception of housings of concealed door hinges 50.The second plastic profile 36 and the second hollow profile 38 have a cross-sectional geometry with a re-entrant angle 52, with the second hollow profile 38 being L-shaped. The second plastic profile 36 also has a second fitting groove 54 for receiving frame-side fitting components. An elastically deformable second web 56 is arranged in the recess of the second plastic profile 36, ensuring play-free positioning of the second hollow profile 38. Reference symbol list 10 Locking system 12 Building-fixed frame 14 door leaves 16 door hinges 18 Filling 20 Leadership 22 First plastic profile 24 First hollow profile 26 First jetty 28th rib 30 First Nut 32 Reinforcing element 34 Second groove 36 Second plastic profile 38 Second hollow profile 40 blind rivet nuts 42 Mounting screw 44 First fitting groove 46 cavity 48-channel 50 Concealed door hinge 52 Incoming angle 54 Second fitting groove 56 Second Pier

Claims

A locking system for a building opening, comprising a pivotable self-supporting sash frame, wherein the sash frame is formed from a plurality of first plastic profiles (22) connected to one another by thermal joining, wherein a first hollow profile (24) made of a metal alloy is arranged in at least one recess of the first plastic profiles (22), wherein a longitudinal axis of the respective first hollow profile (24) extends parallel to a longitudinal axis of the respective first plastic profile (22), wherein the first hollow profiles (24) are connected to one another within the first plastic profiles (22) in corner regions of the sash frame via corner connectors for mechanical coupling, wherein the first hollow profiles (24) coupled via the corner connectors form a self-contained, self-supporting metal frame, wherein the metal frame is designed to bear the static load of the sash frame. Locking system according to claim 1, comprising a building-fixed frame (12) with at least one second plastic profile (36) and a second hollow profile (38) arranged in a recess of the at least one second plastic profile (36), wherein the second hollow profile (38) is made of a metal alloy and the longitudinal axis of the second hollow profile (38) extends parallel to the longitudinal axis of the at least one second plastic profile (36). A locking system according to one of the preceding claims, wherein a floatingly mounted infill (18) is arranged in the self-supporting sash frame, wherein in particular the infill (18) is designed as a non-load-bearing element, wherein in particular the first hollow profiles (24) connected via corner connectors form a closed, statically self-supporting sash frame which absorbs static loads independently of the infill (18), wherein in particular the infill (18) has a height in the range of 170 to 300 cm, wherein in particular the infill (18) has a width in the range of 70 to 150 cm. Locking system according to claim 3, wherein the filling (18) is arranged at least in a form-fitting manner in a guide (20) on the sash frame, wherein in particular the filling (18) is supported circumferentially on the lower guide (20) of the sash frame, wherein in particular the filling (18) is supported on at least one bearing element on the lower guide (20) of the sash frame, wherein in particular expansion gaps are formed between the filling (18) and the upper, left and / or right guide (20) of the sash frame, wherein in particular the expansion gap(s) has / have a width of at least 0.3 cm, in particular at least 0.6 cm, particularly preferably at least 1.0 cm. A locking system according to one of the preceding claims, wherein the at least one first plastic profile (22) has a recess in the area of ​​the lock arrangement for positioning the lock within the sash frame, wherein in particular the first hollow profile (24) has a recess or interruption in the area of ​​the lock arrangement for positioning the lock within the sash frame, wherein in particular the at least one first plastic profile (22) has a reinforcing element (32) at least in the area of ​​the lock arrangement, wherein in particular the reinforcing element (32) is arranged within a first groove (30) extending parallel to the longitudinal axis of the first plastic profile (22) on the first plastic profile (22), wherein in particular the first groove (30) is arranged on a side of the at least one plastic profile (22) facing the filling (18),wherein in particular the first groove (30) is arranged in the guide (20) or is formed as part of the guide (20) of the first plastic profile (22), wherein in particular the reinforcing element (32) is formed as a flat steel, in particular as a flat steel folded at least once, wherein in particular the reinforcing element (32) can be arranged in the first groove (30) by a positive locking arrangement on a first longitudinal edge and by means of a positive locking clip on a second longitudinal edge, wherein in particular the reinforcing element (32) is connected to the first hollow profile (24) by means of a plurality of fastening elements, in particular screws, which extend at least partially through the first plastic profile (22). A locking system according to one of the preceding claims, wherein the first hollow profile (24) is attached to the at least one first plastic profile (22) by means of a plurality of fastening elements in a force-fit and form-fit manner, wherein in particular the fastening elements, in particular screws, extend through the wall within a second groove (34) of the first plastic profile (22) to the first hollow profile (24), wherein in particular the at least one first plastic profile (22) has a cover strip for covering the fastening elements within the second groove (34), wherein in particular the second groove (34) is arranged on the locking side of the at least one plastic profile (22), wherein in particular the second groove (34) extends laterally next to the door lock along the longitudinal axis of the first plastic profile (22), wherein in particular the cover strip is made of plastic.wherein in particular the cover strip in the second groove (34) can be arranged by a positive locking arrangement on a first longitudinal edge and by means of a positive locking clip on a second longitudinal edge. A locking system according to one of the preceding claims, wherein the first plastic profile (22) and the second plastic profile (36) are geometrically aligned such that, in the closed state, they lie flush with each other on an interior surface in a common plane, wherein in particular the first plastic profile (22) and the second plastic profile (36) are geometrically aligned such that, in the closed state, they lie flush with each other on an exterior surface of a building in a common plane, wherein in particular the inner edges of outer profile webs of the first (22) and / or second plastic profile (36) on the wall side have a chamfer or bevel to minimize an optical visible edge of the profile.A locking system according to one of the preceding claims, wherein the recess of the at least one first plastic profile (22) is designed to receive a first hollow profile (24) having a square cross-section, wherein in particular at least one elastically deformable first web (26) is formed in the recess of the first plastic profile (22) for force-fit application of the first hollow profile (24) in the direction of an opposite wall within the recess, wherein in particular the at least one first web (26) extends over the entire length of the recess, wherein in particular at least onein particular at least two rib(s) (28) formed on opposite walls of the recess for positioning the first hollow profile (24) within the recess and / or for spacing the first hollow profile (24) from at least one of the walls within the recess. A locking system according to one of claims 2 to 8, wherein at least one elastically deformable second web (56) is formed in the recess of the at least one second plastic profile (36) for force-locking application of the second hollow profile (38) in the direction of an opposite wall within the recess, wherein in particular the at least one second web (56) extends over the entire length of the recess. A locking system according to one of the preceding claims, wherein in particular the first hollow profile (24) and / or the second hollow profile (38) is positioned directly adjacent to an outermost profile wall of the respective plastic profile (22, 36) within the respective recess, wherein in particular the outermost profile wall is provided for the attachment and / or mounting of door hinges (16), in particular to enable a direct and deformation-free force transmission from the door hinges (16) to the first (24) and / or second hollow profile (38), wherein in particular door hinges (16) can be fastened to a wall of the first hollow profile (24) and / or the second hollow profile (38) by means of blind rivet nuts (40), wherein in particular the blind rivet nuts (40) form a load-bearing internal thread in the respective hollow profile (24, 38) for receiving fastening screws (42) of the door hinges (16). A locking system according to one of the preceding claims, wherein the first plastic profile (22) has a first fitting groove (44) for at least partially receiving an integrated fitting element, wherein in particular the first fitting groove (44) is geometrically positioned in a longitudinal axis of the first hollow profile (24) and the corner connectors arranged therein to enable a centered mechanical screwing of the corner connectors to the first hollow profile (24), wherein in particular a defined cavity (46) for receiving screw heads of the corner connectors is formed between a groove bottom of the first fitting groove (44) and the first hollow profile (24), wherein in particular through holes for mechanical screwing are formed in the first fitting groove (44), which can be closed by watertight cover caps to prevent the ingress of moisture. A locking system according to one of claims 2 to 11, wherein the recess of the second plastic profile (36) and the second hollow profile (38) have a cross-sectional geometry with a re-entrant angle (52), wherein in particular the cross-sectional geometry of the second hollow profile (38) is L-shaped, wherein in particular the second plastic profile (36) has a corresponding cross-sectional geometry to provide a receiving space, wherein in particular the receiving space has a channel (48) for the positive locking and flush receiving of frame-side housings of concealed door hinges (50) as well as for the exact axial positioning of strike plates of a lock assembly to ensure smooth opening and closing. Locking system according to one of claims 2 to 12, wherein the second plastic profile (36) has a second fitting groove (54) for at least partial reception of an integrated fitting element.Door leaf for a locking system (10), in particular according to one of the preceding claims, comprising a pivotable self-supporting leaf frame, wherein the leaf frame is formed from a plurality of first plastic profiles (22) connected to one another by thermal joining, wherein a first hollow profile (24) made of a metal alloy is arranged in at least one recess of the first plastic profiles (22), wherein a longitudinal axis of the respective first hollow profile (24) extends parallel to a longitudinal axis of the respective first plastic profile (22), wherein the first hollow profiles (24) are connected to one another within the first plastic profiles (22) in corner regions of the leaf frame via corner connectors for mechanical coupling, wherein the first hollow profiles (24) coupled via the corner connectors form a self-contained, self-supporting metal frame,wherein the metal frame is designed to bear the static load of the sash frame, wherein a floatingly mounted infill (18) is arranged in the sash frame, wherein in particular the infill (18) is designed as a non-load-bearing element. A building-fixed frame for a locking system (10), in particular according to one of the preceding claims, comprising at least one second plastic profile (36) and a second hollow profile (38) arranged in a recess of the at least one second plastic profile (36), wherein the second hollow profile (38) is made of a metal alloy and a longitudinal axis of the second hollow profile (38) extends parallel to a longitudinal axis of the at least one second plastic profile (36), wherein the recess of the second plastic profile (36) and the second hollow profile (38) have a cross-sectional geometry with a re-entrant angle (52), wherein in particular the cross-sectional geometry of the second hollow profile (38) is L-shaped, wherein in particular the second plastic profile (36) has a corresponding cross-sectional geometry to provide a receiving space,wherein in particular the receiving space has a channel (48) for the form-fitting and flush receiving of frame-side housings of concealed door hinges (50).

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