Locking fitting, and door or window assembly
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- GRETSCH UNITAS GMBH BAUBESCHLAGFABRIK
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-27
AI Technical Summary
Existing locking fittings for lift-and-slide sashes in doors and windows suffer from protruding locking bolts that cause soiling, injury risk, and visual impairment, as well as security issues due to inconsistent alignment with strike plates.
A locking fitting with a retractable bolt mechanism that moves between extended and retracted positions, housed within a cover rail, ensuring the bolt is flush when not in use, and uses a spring and lever system for reliable operation, with adjustable strike plates for secure engagement.
The solution provides a secure, aesthetically pleasing, and injury-free operation by keeping bolts recessed when not in use, enhancing security and reducing maintenance needs.
Smart Images
Figure EP2025064697_04122025_PF_FP_ABST
Abstract
Description
[0001]Applicant: Gretsch-Unitas GmbH Building Hardware Johann-Maus-Straße 3 71254 Ditzingen General Power of Attorney: Ref. 4.3.5.-No. 1046 / 01-AV 16450752WO 27.05.2025 ELL / VBU Title: Locking Fitting and Door or Window Assembly Description The invention relates to a locking fitting with the features of the preamble of claim 1. Furthermore, the invention relates to a door or window assembly with the features of the dependent claim. Locking fittings for door or window assemblies with a sash that can be lifted relative to the frame and slid in the lifted position (lift-and-slide sash) are known from the prior art. Such locking fittings have a lifting mechanism that can be operated by means of a handle. When the wing is in the lowered position relative to the frame, actuating the handle raises the wing on the one hand and moves the connecting rod upwards against the direction of gravity on the other.At locking points between the frame and sash, bolts or locking pins are moved into the unlocked position, allowing the sash to be moved relative to the frame along a specific direction. The locking points can be designed in various ways. For example, locking pins can be attached to the frame of the door or window assembly, with a corresponding slot in the drive rod on the sash side serving as a counterpart (strike plate) for one of the locking pins. Alternatively, one or more locking pins can be attached to the drive rod, and one or more strike plates can be arranged on the frame side. Both designs have the disadvantage that the locking pins protrude into the passageway when the sash is open. This creates the risk of brushing against the (often lubricated) locking pins while walking through, leading to potential soiling and injury.Furthermore, the visible locking bolts when the sash is open cause visual impairment. Another possible design involves providing pivot hooks on the sash side of the lift-and-slide mechanism, each interacting with a strike plate located on the frame. A disadvantage of this design is that the milling in the sash profile requires special recesses to accommodate the pivot hook unit. Additionally, generating sufficient contact pressure with pivot hooks is more difficult than with a locking bolt, resulting in increased operating forces. Another known design involves magnetic locking bolts on the lift-and-slide mechanism, which interact with a corresponding strike plate on the frame that incorporates a magnet.In this system, the locking bolts are recessed in the sash profile when the sash is open and only protrude when the sash is moved into the closed position relative to the frame and the respective locking bolt is aligned with and near its strike plate containing the magnet. If the distance between the locking bolt and the magnet is incorrect, the bolt may not extend, and the sash may therefore not be locked to the frame, or not locked sufficiently. This compromises security. The present invention aims to provide a locking fitting that reduces the risk of contamination or injury to the locking bolts while still achieving reliable locking. The invention solves this problem with a locking fitting having the features of claim 1.The locking fitting is designed and / or intended for a door or window assembly comprising a frame and a sash. The locking fitting includes a lifting mechanism, a drive rod, and a cover rail in which the drive rod is slidably guided along its longitudinal axis. The lifting mechanism may be housed in a lock casing (lift lock with lifting mechanism). The lifting mechanism is actuated by a handle and coupled to the drive rod, so that the drive rod (along its longitudinal direction) can be moved, depending on the direction of actuation of the handle, between a position lowered relative to the cover rail (first position) and a position raised relative to the cover rail (second position, which differs from the first position). At least one bolt assembly with a bolt that can be extended and retracted (relative to the bolt assembly or its casing) is attached to the drive rod.The bolt can be driven (via the bolt mechanism) such that, when the drive rod is in the lowered position, the bolt is in the extended bolt position, in which the bolt penetrates an opening on the end face of the cover rail (an opening on an end face or face of the cover rail) and projects beyond the end face of the cover rail. This provides a locking position. Furthermore, the bolt can be driven (via the bolt mechanism) such that, when the drive rod is raised, the bolt is in the retracted bolt position, in which the bolt does not project beyond the end face of the cover rail. In other words, in the retracted bolt position, the bolt is flush with or recessed into the end face of the cover rail. This provides an unlocking position. The proposed locking fitting thus provides a secure, reliable, and aesthetically pleasing solution.By actuating the bolt via the locking mechanism, both the retracted and extended bolt positions can be reliably achieved. Furthermore, the bolt is in the retracted position when the drive rod is raised relative to the cover profile (corresponding to an unlocked and movable position of the sash relative to the frame). Thus, no bolts protrude into the passageway, eliminating the risk of dirt or injury when passing through the opening. Since the bolts are in the retracted position, they are protected from environmental influences. This also results in a more aesthetically pleasing appearance. The locking fitting can have multiple locking mechanisms with a retractable bolt, for example, two, three, or four locking mechanisms. These are preferably analogous in design and function to the locking mechanism described here.The cover rail has an end wall and two side walls extending from the end wall (preferably parallel to each other). The cover rail can have a U-shaped cross-section. The handle of the lifting mechanism can be rotatably mounted in the housing of the lifting lock. The bolt or bolt mechanism is preferably designed and / or actuated such that the bolt is released or moved into the extended bolt position shortly after the handle, which moves the drive rod into the lowered position relative to the cover rail, is actuated, thus ensuring the bolt has the greatest possible extension (the deepest possible bolt engagement relative to a strike plate in the extended bolt position). This increases security against prying open the sash, for example, during a break-in attempt.In a preferred embodiment, the locking mechanism comprises a housing with an integrated bolt guide channel in which the bolt is slidably guided and can be moved between the extended and retracted bolt positions. This contributes to a structurally simple and stable bolt guide. The housing can be attached to the drive rod, in particular by screws. The central longitudinal axis of the bolt guide channel is preferably oriented orthogonally to the longitudinal axis of the drive rod. The housing can be multi-part, i.e., it can consist of two or more housing parts. Specifically, the housing can be formed from a lower housing part and an upper housing part, which differ structurally from each other. Alternatively, the housing can be formed from two housing halves, which are preferably identical.Advantageously, the housing can have a projecting collar around the bolt guide channel on one side facing the connecting rod, with a corresponding opening in the connecting rod into which the collar engages when the housing is mounted (housing attached to the connecting rod). In other words, the collar is partially or completely received in the opening when mounted. This contributes to a stable attachment of the housing to the connecting rod, as there is a positive engagement of the collar in the opening. If the housing is formed from several housing parts, each housing part can have a portion of the collar. When the housing is mounted (housing parts assembled), the collar is then completed. The bolt can expediently have a bolt shank and a bolt head, the latter having a cross-section larger than that of the bolt shank (enlarged bolt head).This allows the bolt head to engage with a strike plate, enabling a corresponding rear grip. Furthermore, a bolt shaft with a tapered cross-section compared to the bolt head contributes to a compact design of the bolt assembly housing. In a preferred embodiment, the locking fitting features a locking mechanism with a strike plate, which engages the bolt in its extended position. This allows for locking. The locking mechanism can, for example, be attached to the frame of a door or window assembly and interact with the bolt assembly located on the sash side. Specifically, the locking mechanism can have a housing that is closed at one rear by a back panel and open at the front (the opening exposes an interior space within the locking mechanism housing).The strike plate is housed within the casing (interior of the casing), and the locking mechanism includes an adjustment device for setting the distance of the strike plate relative to the rear wall. This allows for adjustment of the contact pressure of the locking fitting on a door or window assembly. The adjustment device may have one or more, preferably two, adjusting screws, each of which can be screwed into a threaded hole (preferably with an internal thread) formed on the rear wall. The difference between the minimum and maximum screw-in depth of the adjusting screw determines the adjustment range. Each adjusting screw has a screw head against which the strike plate rests. Through holes may be formed in the strike plate to allow the adjusting screws to be adjusted using a tool.Furthermore, the strike plate preferably features elongated holes through which fastening screws can be passed, allowing them to be screwed in from the rear, for example, to the frame of a door or window assembly, via through holes formed in the rear wall. The elongated holes in the strike plate allow for height adjustment of the strike plate relative to the housing. Advantageously, the strike plate can be designed with a bolt passage opening that, along a longitudinal direction of the strike plate, has a first section (bolt passage section) and a second section (bolt engagement section), the cross-section of which is tapered relative to the first section. This contributes to reliable locking of the bolt to the strike plate. The first section can be passed through by the bolt or bolt head. The second section can be passed through by the bolt or bolt head.The bolt head, however, can no longer be passed (rear grip). Specifically, the bolt can be pre-tensioned into the extended bolt position by means of a spring, in particular a compression spring designed as a helical spring (helical compression spring). This allows the bolt to be moved into the extended bolt position. A projection, preferably pin-like, can be formed on the housing or on a housing part, e.g., on a housing top, to hold the spring at its end facing away from the bolt. At its end facing the bolt, the spring can bear against the bolt, in particular at the bolt tail. Advantageously, the bolt mechanism can have a pivotable return lever by means of which the bolt can be moved into the retracted bolt position.This contributes to high reliability, as retracting the bolt (moving it into the retracted position) is accomplished by a different actuating element (reset lever) than extending the bolt (moving it into the extended position by a spring). Specifically, the reset lever can be pivotally mounted on the housing of the locking mechanism. For this purpose, the housing can have corresponding tabs on which the reset lever is pivotally mounted by means of a pin or rivet. According to one possible embodiment, the reset lever can have two preferably identical lever plates, spaced apart from each other and pivotally mounted on the housing of the control device by means of a rivet. This contributes to a compact design, as the housing of the locking mechanism can be arranged in the space between the two spaced-apart lever plates.A stop piece can be advantageously attached to the cover rail. This stop piece is positioned such that when the drive rod is moved into the raised position relative to the cover rail, the return lever comes into contact with the stop piece. This causes the return lever to pivot, moving the bolt into the retracted position. This facilitates a structurally simple and technically reliable movement of the bolt into the retracted position. The stop piece can be attached to the cover rail by means of a fixing pin. The stop piece can have a main body and laterally projecting retaining projections that, when installed, engage in corresponding recesses in the cover rail, particularly in its side walls. This contributes to a stable attachment of the stop piece to the cover rail.In a preferred embodiment, the reset lever or its lever plates can each have a first arm that engages projections formed on the bolt tail. The reset lever or its lever plates can each have a second arm that is rotationally fixed to the first arm and can be actuated by means of the stop piece (when the connecting rod is moved into the raised position). This contributes to a structurally simple and stable design of the reset lever. Preferably, the bolt tail has two projections that extend from the bolt tail in opposite directions. An opening can be formed in the housing of the bolt assembly or in its housing parts, through which one of the projections protrudes and is contacted by the first arm of the lever plates.The reset levers and the stop piece can be coordinated such that the bolt is released or moved into the extended bolt position shortly after the handle, which moves the drive rod into the lowered position relative to the cover rail, is actuated. This ensures the bolt has the greatest possible extension travel (the deepest possible bolt engagement relative to a strike plate in the extended bolt position). Advantageously, the bolt assembly can be arranged within the clear cross-section of the cover rail. This limits the installation depth, and the components do not protrude beyond the cover rail or the ends of the cover rail's side walls facing away from the end wall. This is advantageous for the fabricator of sash profiles, as no milling work on the sash profile is required when installing this locking fitting.It is also advantageous if the main body of the strike plate is arranged within the clear cross-section of the cover rail. In an alternative embodiment, a control unit can be arranged within the clear cross-section of the cover rail and attached to the cover rail. The bolt has guide projections at its tail, each guided in a track formed on the control unit. When the drive rod is moved by actuating the handle, the bolt can thus be moved into the extended or retracted position, depending on the direction of actuation of the handle. This design contributes to a smaller number of components for the locking fitting, since both retraction and extension of the bolt are achieved using the same components. Specifically, two guide projections can extend from the bolt tail in opposite directions.Each of the latch projections can be provided with a guide track. Furthermore, an opening can be formed in the housing of the locking mechanism or in its housing halves, through which one of the guide projections protrudes laterally from the housing and engages in its guide track. Advantageously, the control unit can have two spaced-apart side walls, each containing one of the guide tracks, with the locking mechanism arranged in the space between the two side walls. This contributes to a compact design. Specifically, the control unit can have a closed profile (the side walls of the control unit are connected to each other by connecting walls). The guide tracks are preferably formed on the facing inner surfaces of the side walls. The control unit can be attached to the cover rail by means of two fixing pins.In a preferred embodiment, the side walls can each have a raised section on their outer surface, with corresponding cutouts formed in the cover rail in which one of the raised sections is arranged when assembled. This contributes to a stable connection of the control unit to the cover rail due to the positive engagement of the raised sections in the corresponding cutouts. The aforementioned problem is also solved by a door or window assembly with the features of the dependent claim. Regarding the advantages achievable thereby, reference is made to the corresponding descriptions of the locking fitting. The door or window assembly has a frame and a sash, wherein the sash is slidably guided on the frame and can be moved relative to the frame between a lowered position and a raised position.The sash can be moved in a raised position (lift-and-slide sash). In the raised position, the sash can be moved along a sliding direction relative to the frame. Furthermore, the door or window assembly has a locking mechanism with one or more of the aspects described above. The locking device with strike plate is preferably arranged on the frame side, in particular on a side of a vertical frame member facing the sash. The other components of the locking mechanism, including the lifting mechanism, the cover rail, the drive rod, the locking devices, the stop, and / or the control unit, are arranged on the sash side, in particular on an end face of the sash facing the aforementioned vertical frame member. The measures described above and / or those explained below can be used to further customize the door or window assembly.The invention is explained below with reference to the figures, where identical or functionally identical elements are provided with identical reference numerals, possibly only once. The figures show: Fig. 1 an embodiment of a door or window arrangement in a schematic and partially cutaway side view; Fig. 2 an embodiment of a locking fitting with the drive rod in the raised position in a partially cutaway side view with an enlarged partial view (bolt in the retracted bolt position); Fig. 3 the locking fitting from Figure 2 with the drive rod slightly lowered from the raised position in a partially cutaway side view with an enlarged partial view (bolt in the extended bolt position and in the bolt passage section of the bolt passage opening); Fig.4. The locking fitting from Figure 2 with the drive rod in the lowered position, shown in a partially cutaway side view with an enlarged partial view (bolt in the extended bolt position and in the bolt's rear grip section of the bolt passage opening); Figure 5. The locking fitting from Figure 2 in an exploded view (without locking mechanism and strike plate); Figures 6a and 6b. The locking mechanism of the locking fitting in a top view (Figure 6a) and a cutaway side view (Figure 6b); Figure 7. The locking mechanism from Figures 6a and 6b in a perspective exploded view; Figures 8a and 8b. One possible embodiment of the locking fitting, once with the drive rod in the raised position and the bolt in the retracted bolt position (Figure 8a) and once with the drive rod in the lowered position and the bolt in the extended bolt position (Figure 8b), each in a cutaway side view; and Figure 8a.Figure 9 shows the locking fitting from Figures 8a and 8b in an exploded view (without locking mechanism and strike plate). Figure 1 shows a schematic side view of a door or window assembly, designated overall by reference numeral 100. The door or window assembly 100 has a fixed frame 102, which includes an optional lower frame cross member 104, an upper frame cross member 106, and two vertical frame members 108, 110. The lower frame cross member 104 is optional and can be omitted if the door or window assembly 100 is designed to be barrier-free (level threshold). In this example, the door or window assembly 100 also has a fixed panel 112, which is attached to the frame 102 and is immovable relative to the frame 102. The fixed panel 112 can have a glazed segment 114. Instead of the fixed field 112, a movable wing can be provided (two-winged elements; not shown).The door or window assembly 100 also includes a sash 116, which is slidably guided on the frame 102 and can be displaced relative to the frame 102 along a lifting direction hr between a lowered position and a raised position. In the raised position, the sash 116 can be displaced relative to the frame 102 along a sliding direction vr (the sash 116 is shown here in the raised position; only schematically indicated). The sash 116 has a lower sash cross member 118, an upper sash cross member 120, and two vertical sash mullions 122, 124. The sash 116 may include a glazed segment 117. Furthermore, the door or window arrangement 100 has a locking fitting 10, which is described in more detail below and whose components (except for the locking device 12) are arranged on the wing side, in the example on the vertical wing mullion 122.The locking device 12 is arranged on the frame side, in this example on the vertical frame member 108. The locking fitting 10 is explained in more detail below with reference to Figures 2 to 5. The locking fitting 10 has a lift lock 14 with a lock housing 16 in which a lifting mechanism 18 is arranged. A handle H can be attached (only schematically indicated) to a lever spindle 19 rotatably mounted in the lock housing 16, by means of which the lifting mechanism 18 can be actuated. The locking fitting 10 further has a drive rod 20 and a cover rail 22 in which the drive rod 20 is slidably guided along its longitudinal axis 20'. The cover rail 22 has an end wall 23 and two side walls 24 extending away from the end wall 23. In this example, the cover rail 22 has a U-shaped cross-section.The lifting mechanism 18 can be driven by means of a handle (not shown) via the push button 19 and is coupled to the drive rod 20 via a coupling point 25. This allows the drive rod 20 to be moved along its longitudinal direction 20' between a position lowered relative to the cover rail 22 (see Fig. 4) and a position raised relative to the cover rail 22 (see Fig. 2), depending on the direction of actuation of the handle or push button 19. A locking device 26, which has a housing 27, is attached to the drive rod 20. The locking device 26 also has a bolt 28 that can be moved in and out relative to the locking device 26 or its housing 27. The bolt 28 can be driven via the bolting device 26 such that, when the drive rod 20 is in the lowered position, the bolt 28 is in the extended bolting position, in which the bolt 28 penetrates an end-face opening 30 of the cover rail 22 and extends over the end face orThe end wall 23 of the cover rail 22 protrudes (see Figure 4). This allows a locking position to be achieved (bolt 28 locked to the locking device 12). Furthermore, the bolt 28 can be driven via the locking device 26 such that, when the drive rod 20 is raised, the bolt 28 is in the retracted locking position, in which the bolt does not protrude beyond the end face or end wall 23 of the cover rail 22 (see Figure 2). This allows an unlocking position to be achieved (bolt 28 not locked to the locking device 12; the sash 116 can thus be moved along a sliding direction vr). The housing 27 of the locking device 26 has a locking guide channel 32 formed in the housing 27, in which the locking bar 28 is slidably guided and can be moved between the extended locking position and the retracted locking position (see Figure 5).The central longitudinal axis M of the bolt guide channel 32 is oriented orthogonally to the longitudinal axis 20' of the connecting rod 20 in this example. The housing 27 is attached to the connecting rod 20 and, in this example, is fastened by screws 33 in corresponding mounting holes 34. The housing 27 is made up of several parts, in this example consisting of two assembleable housing parts 35, 36, namely a lower housing part 35 and an upper housing part 36. On one side facing the connecting rod 20, the housing 27 has a projecting collar 37 around the bolt guide channel 32, with a corresponding opening 38 in the connecting rod 20 (see Fig. 5), into which the collar 37 penetrates when the housing 27 is mounted (housing 27 attached to the connecting rod 20). In the present case, the housing parts 35, 36 each have a part of the bundle 37', 37'', which is completed when the housing 27 is assembled (housing parts 35, 36 are put together).The bolt 28 has a bolt head 28', a bolt shaft 28'', and a bolt tail 28''' (see Figure 5). The bolt head 28' has a cross-section that is larger relative to the bolt shaft 28'' (enlarged bolt head 28'). The locking fitting 10 further includes the locking device 12 with a strike plate 40, with which the bolt 28 can be engaged in the extended bolt position (see Figure 4). The locking device 12 has a housing 41, which is closed at one rear by a back panel 42 and open at one front (opening 43 provides an interior space 44 of the housing 41; see Figure 7). The locking device 12 has an adjustment device 45 with which the distance of the strike plate 40 relative to the back panel 42 can be adjusted. In this example, the adjusting device 45 has two adjusting screws 46, each of which can be screwed into a screw-in opening 47 formed on the rear wall 42.The difference between the minimum and maximum screw-in depth of the adjusting screws 46 defines the adjustment range V (see Figure 6b). Each adjusting screw 46 has a screw head 46' against which the strike plate 40 rests (see Figure 6b). Through holes 48 are formed in the strike plate 40 so that the adjusting screws 46 can be adjusted with a tool when the strike plate 40 is mounted (see also Figure 6a). The adjustment range V can be, for example, ± 1.5 mm. In this example, the strike plate 40 also has elongated holes 49 so that the strike plate 40 and the housing 41 can be attached to the rear of the frame 102, in this case to the vertical frame member 108, via through openings 50 in the housing 41 using fastening screws 51. Due to the elongated holes 49 in the strike plate 40, a height adjustment of the strike plate 40 relative to the housing 41 is possible (height adjustment by a height difference +h or ).–h starting from a central position; see Figure 6a). The height adjustability h can be, for example, ± 1.5 mm. A bolt passage opening 52 is formed in the strike plate 40, which, along a longitudinal extension direction le of the strike plate 40, has a first section 52' (bolt passage section) and a second section 52'' (bolt retraction section), the cross-section of which is tapered relative to the first section 52' (see Figures 6a and 7). In this case, the bolt 28 is biased into the extended bolt position by means of a spring 54, in this example a helical compression spring 54 (see Figure 5). A pin-like extension 55 is formed on one of the housing parts 35, 36, in this example on the upper housing part 36, for holding the spring 54 at its end facing away from the bolt 28. At its end facing the bolt 28, the spring 54 rests against the bolt 28 in the assembled state, in particular against the bolt tail 28'''.The locking device 26 has a pivotable return lever 58 by means of which the bolt 28 can be moved into the retracted locking position. The return lever 58 is pivotably mounted on the housing 27 of the locking device 26. The housing 27 has corresponding tabs 59 on which the return lever 58 is pivotably mounted by means of a rivet 60. In this case, the return lever 58 is formed from two identical lever plates 58', 58'', which are spaced apart from each other and are rotationally fixed to each other by means of the rivet 60. The locking device 26 is arranged in the space between the two lever plates 58', 58'' when assembled. A stop piece 62 is attached to the deck rail 22, which is positioned on the deck rail 22 in such a way that the return lever 58 comes into contact with the stop piece 62 when the drive rod 20 is moved into the raised position.This pivots the return lever 58 and moves the bolt 28 into the retracted bolt position (see Figures 2 and 3). The stop piece 62 is secured in corresponding openings 64 of the cover rail 22 by means of a fixing pin 63. The stop piece 62 has a main body 65 and retaining projections 66 extending laterally from it, which, in the assembled state, engage in corresponding recesses 67 in the cover rail 22, specifically in the side walls 24 of the cover rail 42. The return lever 58, or its lever plates 58', 58'', each has a first arm 68 that engages projections 29 formed on the bolt tail 28'''. Furthermore, the return lever 58 or its lever plates 58', 58'' each have a second arm 69 which is rotationally fixed to the first arm 68 and can be actuated by means of the stop piece 62 when the connecting rod 20 is moved into the raised position (see Figures 2 and 3).In this example, openings 70 and 71 are formed in the housing of the locking device 26 and in its housing parts 35 and 36, respectively, through which one of the projections 29 protrudes to allow actuation by the first arm 68. In this example, the return lever 58 and the stop piece 62 are coordinated such that the bolt 28 is released or moved into the extended bolt position shortly after the handle, which moves the drive rod 20 into the lowered position relative to the cover rail 22, is actuated. Thus, the bolt 28 has the greatest possible extension (the deepest possible bolt engagement in the locking device 12). In this example, the locking device 26 is arranged within the clear cross-section of the cover rail 22 (the locking device 26 does not project from the end wall 23 beyond the side walls 24; see Figures 2 to 4).The main body 65 of the stop piece 62 is also arranged within the clear cross-section of the cover rail 22. Figures 2 to 4 show the operation of the locking fitting 10 or the door or window assembly, starting from a raised drive rod or sash position (Figure 2), through an intermediate position (Figure 3), to a lowered drive rod or sash position (Figure 4). In Figure 2, the drive rod 20 is in the raised position relative to the cover rail 22. The return lever 58 is in contact with the stop piece 62 with its first arm 69, so that the first arm 68 holds the bolt 28 in the retracted bolt position via the projections 29. The handle H points downwards in this case. The wing 116 is in the raised wing position relative to the frame 102, so that the wing 116 can be moved along the displacement direction vr relative to the frame 102. In Figure 3, the handle H has been moved from Figure 2 by an angle of approximately...The handle H is pivoted at 45°, causing the connecting rod 20 to be shifted downwards by a certain amount from its raised position against the direction of gravity g. Since the locking mechanism 26 has correspondingly moved a certain distance away from the stop piece 62, this allows the return lever 58 to pivot, so that the bolt 28, supported by the spring 54, is moved into the extended locking position. The bolt 28 thus projects through the first section 52' of the bolt passage opening 52 into the interior 44 of the locking mechanism 12. In Figure 4, the handle H has been pivoted further, specifically by an angle of approximately 180° from Figure 2. The connecting rod 20 is therefore in the lowered position relative to the cover rail 22.The bolt 28, which remains in the extended bolt position, now projects through the second (tapered) section 52'' of the bolt passage opening 52 into the interior 44 of the bolt assembly 12 (rear engagement of the second section 52'' by the bolt head 28'). The sash 116 is in the lowered sash position relative to the frame 102, so that the sash 116 cannot be moved along the displacement direction vr relative to the frame 102. Figures 8a, 8b, and 9 show one embodiment of the locking fitting 10, which largely corresponds to the embodiment described above, so that, to avoid repetition, reference is made to the descriptions therein. The locking device 12 shown in Figures 8a and 8b corresponds to the locking device 12 described above.The present locking device 26 also has a housing 27 in which the bolt 28 is slidably guided in a bolt channel 32 and which is formed from two housing parts 35, 36. In this case, however, the housing parts 35, 36 are identical (housing 27 is formed from two identical housing parts; see Figure 9). The bolt is actuated not by a spring and a return lever, but by a control unit 75 with guide tracks 76 formed therein, into which guide projections 77 of the bolt 28 engage. The control unit 75 is arranged in the clear cross-section of the cover rail 22 and is attached to the cover rail 22. The bolt 28 has guide projections 77 at its bolt tail 28''', each of which is guided in a guide track 76 formed on the control unit 75.The guide projections 77 extend in opposite directions from the bolt tail 28''', with each guide projection 77 engaging in one of the guide tracks 76. A passage 70, 71 is formed in the housing 27 and in its housing halves 35, 36, through which one of the guide projections 77 extends laterally from the housing 27 and engages in its guide track 76. The control unit 75 has two spaced-apart side walls 78, each with one of the guide tracks 76 formed in it, the locking device 26 being arranged in the space between the two (spaced-apart) side walls 78. The guide tracks 76 are formed on the facing inner surfaces of the side walls 78. In the example, the control unit 75 has a self-contained profile in which the side walls 78 of the control unit 75 are connected to each other by connecting walls or connecting wall sections 79.The control unit 75 is attached to the cover rail 22 by means of two fixing pins 80 in openings 81. In this example, the side walls 78 of the control unit 75 each have a raised section 82 on their outer surface. Corresponding cutouts 83 are formed in the cover rail 22, specifically in the side walls 24, in which one of the raised sections 82 is arranged when the unit is mounted. In this embodiment, the movement of the bolt 28 is such that, when the handle H is actuated, which causes both a displacement of the drive rod 20 along its longitudinal direction and a displacement of the sash 116, the bolt 28 is moved via the guide tracks 76 and the guide projections 77 engaged therein into either the retracted bolt position or the extended bolt position, depending on the direction of displacement of the drive rod 20 and the sash 116.When the sash 116 is lowered (locked) by actuating the handle H, the bolt 28 is pushed forward over the guide track and 76, thus moving into the extended bolt position. The bolt 28 then penetrates the bolt passage opening 52 in the first section 52', and as it continues to lower, it engages in the second section 52'' of the bolt passage opening 52 (where a back-hook or back-engagement occurs; see Fig. 8b). This pulls the sash 116 towards the vertical frame member 108, creating a tight seal. A comparison of Figures 8a and 8b illustrates the lowering movement just described. The distance d1 denotes the distance of the bolt center from the inner surface of the connecting wall section 79 when the sash is raised and the drive rod 20 is raised relative to the cover rail 22 (see Fig. 8a).The distance d1' denotes the distance of the bolt center from the inner surface of the connecting wall section 79 when the sash is in the lowered position and the drive rod 20 is lowered relative to the cover rail 22. The difference between d1' and d1 corresponds to the drive rod stroke ∆h. TS between the lowered and raised positions of the connecting rod, i.e., ∆h TS = d1' - d1. The wing stroke between the wing position lowered relative to frame 102 and the wing position raised relative to frame 102 is called wing stroke ∆h. F The distance d2 denotes the height difference d2 of the bolt center between the position shown in Figure 8a (drive rod 20 in a raised position relative to the cover rail 22 and sash 116 raised relative to the frame 102) and the position shown in Figure 8b (drive rod 20 in a lowered position relative to the cover rail 22 and sash 116 lowered relative to the frame 102). The distance d2 thus results from the drive rod stroke ∆h.TS and the wing lift ∆h F , therefore, from d2 = ∆h TS + ∆h F .
Claims
Claim 1. Locking fitting (10) for a door or window assembly (100) comprising a frame (102) and a sash (116), with a lifting mechanism (18), a drive rod (20) and a cover rail (22) in which the drive rod (20) is slidably guided along its longitudinal axis (20'), wherein the lifting mechanism (18) can be driven by means of a handle (H) and is coupled to the drive rod (20) so that the drive rod (20) can be moved between a position lowered relative to the cover rail (22) and a position raised relative to the cover rail (22) depending on the direction of actuation of the handle (H), characterized in that a locking device (26) with a retractable bolt (28) is attached to the drive rod (20), wherein the bolt (28) can be driven such that the The bolt (28) is in the extended bolt position when the connecting rod (20) is in the lowered position,in which the bolt (28) penetrates an end-face opening (30) of the cover rail (22) and projects beyond the end face of the cover rail (22), and in that the bolt (28) is in the retracted bolt position when the drive rod (20) is raised, in which the bolt (28) does not project beyond the end face of the cover rail (22).
2. Locking fitting (10) according to claim 1, characterized in that the locking device (26) comprises a housing (27) with a component formed therein, 3. Locking fitting (10) according to claim 2, characterized in that the housing (27) has a projecting collar (37) around the bolt guide channel (32) on a side facing the drive rod (20), wherein an opening (38) corresponding to the collar (37) is formed in the drive rod (20), into which the collar (37) penetrates in the assembled state.
4. Locking fitting (10) according to one of the preceding claims, characterized in that the bolt (28) has a bolt shaft (28'') and a bolt head (28') which has a cross-section enlarged relative to the bolt shaft (28''). 5.Locking fitting (10) according to one of the preceding claims, characterized by a locking device (12) with a strike plate (40) with which the bolt (28) can be engaged in the extended bolt position.
6. Locking fitting (10) according to claim 5, characterized in that the locking device (12) has a housing (41) which is closed at a rear by a back wall (42) and open at a front, wherein the strike plate (40) is received in the housing (41), wherein the locking device (12) has an adjustment device (45) by means of which the. The distance of the strike plate (40) relative to the rear wall (42) is adjustable.
7. Locking fitting (10) according to claim 5 or 6, characterized in that a bolt passage opening (52) is formed in the strike plate (40), which has a first section (52') and a second section (52'') along the longitudinal extension direction (le) of the strike plate (40), the cross-section of which is tapered relative to the first section (52').
8. Locking fitting (10) according to one of the preceding claims, characterized in that the bolt (28) is biased into the extended bolt position by means of a spring (54).
9. Locking fitting (10) according to one of the preceding claims, characterized in that the bolt assembly (26) has a pivotable return lever (58) by means of which the bolt (28) can be moved into the retracted bolt position. 10.Locking fitting (10) according to claim 9, characterized in that a stop piece (62) is attached to the cover rail (22), which is positioned on the cover rail (22) in such a way that the return lever (58) comes into contact with the stop piece (62) when the drive rod (20) is moved into the raised position, whereby the return lever (58) pivots and the bolt (28) is moved into the retracted bolt position.
11. Locking fitting (10) according to claim 10, characterized in that the return lever (58) has a first arm (68) which engages projections (29) formed on the bolt tail (28''') of the bolt (28), and that the return lever (58) has a second arm (69) which is rotationally fixed to the first arm (68) and can be actuated by means of the stop piece (62).
12. Locking fitting (10) according to any one of the preceding claims, characterized in that the bolt assembly (26) is arranged in the clear cross-section of the cover rail (22).
13. Locking fitting (10) according to one of claims 1 to 7 or 12, characterized in that a control unit (75) is arranged in the clear cross-section of the cover rail (22) and is attached to the cover rail (22), wherein the bolt (28) has guide projections (77) on the bolt tail (28'''), each of which is guided in a guide track (76) formed on the control unit (75). 14.Locking fitting (10) according to claim 13, characterized in that the control unit (75) has two spaced-apart side walls (78) in each of which one of the guide tracks (76) is formed, wherein the locking device (26) is arranged in the space between the two side walls (78).
15. Locking fitting (10) according to claim 14, characterized in that the side walls (78) each have a raised section (82) on their outer side, wherein in the cover rail (22). Corresponding cutouts (83) are formed in which, in the assembled state, one of the raised sections (82) is arranged.
16. Door or window arrangement (100), comprising a frame (102) and a sash (116), wherein the sash (116) is slidably guided on the frame (102) and is displaceable relative to the frame (102) between a lowered position and a raised position, wherein the sash (116) is displaceable in the raised position along a displacement direction (vr) relative to the frame (102), and a locking fitting (10) according to one of the preceding claims.