LIFT-SLIDING DOOR OR WINDOW WITH DRIVE

DE502023001075D1Active Publication Date: 2025-06-26VEKA AG
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Patent Information

Application Number
DE502023001075
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-07-05
Filing Date
2023-06-20
Publication Date
2025-06-26
Estimated Expiration
2043-06-20

AI Technical Summary

Technical Problem

Existing lift-and-slide door and window systems require significant force to open and close due to the high mass of the sliding sashes, and conventional drives are visibly mounted, affecting appearance and increasing installation complexity. Additionally, these systems are not easily retrofittable with motorized drives.

Method used

A drive unit is integrated into the lift-and-slide sash, comprising a drive motor with a vertically aligned pinion shaft that engages with a rack area on the guide rail, allowing for motorized movement of the sash without visible components. The drive unit is designed to be compact and can be easily retrofitted into existing profile shapes.

Benefits of technology

The solution enables smooth, motorized operation of lift-and-slide sashes with reduced installation complexity and improved appearance, as the drive unit is concealed within the sash profile. It also allows for easy retrofitting of existing manual systems, enhancing functionality and user experience.

✦ Generated by Eureka AI based on patent content.
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Description

[0001] The invention relates to a lift-and-slide door or a lift-and-slide window comprising a lift-and-slide sash, a fixed sash and a frame, wherein the lift-and-slide sash is adjustable in the frame between a raised and a lowered position and, in the raised position, is displaceable in a displacement direction by means of a carriage arranged on the lower sash profile on a guide rail on the lower frame profile of the frame frame and is guided in a guide rail on the upper frame profile of the frame frame, wherein the lift-and-slide sash has a drive unit in a vertical sash profile with which a vertically aligned pinion shaft carrying a pinion can be driven, wherein the guide rail on the upper frame profile forms a guide groove between two guide webs, preferably two parallel spaced guide webs,in which a sliding element is displaceable in the direction of displacement and, in both the raised and lowered positions of the lift-slide wing, an upper pinion shaft section lying vertically above the pinion is rotatably mounted in the sliding element and the pinion meshes with a rack area on one of the guide webs surrounding the guide groove.

[0002] Such a lift-and-slide door or such a lift-and-slide window is known, for example, from the publication EP 3 882 425 A1.

[0003] The sliding sashes of systems designed as lift-and-slide sashes for a window or door often have a relatively high mass.

[0004] When moving the sash, especially when pushing it from a stationary position, a great deal of force must be applied to open it.

[0005] Closing also requires overcoming resistance to the inertia of the sliding wing.

[0006] Conventional drives are visibly mounted, e.g., in the form of surface-mounted boxes, on the window or door and are shielded with an additional cover, which severely impairs the appearance. Likewise, the risk of injury during installation is increased by obstructive, visible components. Furthermore, visible components offer more opportunities for external manipulation. Installing such a drive device also proves to be complex based on the current state of the art.

[0007] Furthermore, power transmission in motorized sliding door systems is usually achieved via a belt drive, which requires additional components and must be considered from the outset during the design and construction of a sliding door system. Retrofitting manual sliding door systems with motorized drives is therefore not possible with existing drive solutions, or only possible with considerable effort.

[0008] The object of the present invention is to enable motorized movement of a lift-and-slide sash without the drive unit impairing the appearance of the lift-and-slide door or window. It is also an object to ensure secure engagement between the components that drive the motorized movement and secure guidance of the lift-and-slide sash in all possible positions of the lift-and-slide sash.

[0009] Preferably, the invention should also enable retrofitting of existing, previously exclusively manually operated lift-and-slide sashes. Further preferably, it should enable simple installation in existing profile shapes.

[0010] This problem is solved by the features of claim 1.

[0011] Advantageous further training results from the subclaims.

[0012] The drive unit is designed to be suitable for a sliding sash, such as a lift-and-slide sash, for example, for a window or door. The movable sash has at least two carriages, each with rollers, for sliding on a track in a direction parallel to the sash's extension or along a track.

[0013] For the automatic sliding operation of the sash, an operating element which controls the drive unit is preferably provided on a profile of the door or window, preferably on a vertical stile. By operating the operating element, the movable sash can be moved, for example, from a closed position into a position relative to a fixed frame profile and a stationary sash field or another sliding sash field. On the other hand, the sash can also be brought into a secured, displaced ventilation position or into a position to form a passage opening. The sash is advantageously held so as to be movable on the lower frame profile via carriages arranged on the floor side of the lower sash profile and supported on a guide rail.

[0014] Advantageously, the drive device for moving the sash comprises a drive motor arranged on the sash side with a pinion shaft driven by the drive motor. The connection between the drive motor and the pinion shaft can preferably be established via a gear. The pinion shaft with the pinion is positively guided on a rack area arranged on the frame profile, which is formed on the guide rail.

[0015] The guide rail performs a dual function in the invention. Firstly, it guides the sash, specifically holding it in a direction perpendicular to the direction of travel. Secondly, the guide rail, thanks to the rack section implemented on it, also forms part of the drive chain.

[0016] When the drive motor is running and the pinion shaft is rotating, the pinion rolls with its teeth in the teeth of the rack area and thereby moves the movable wing.

[0017] Preferably, the drive unit comprises a drive motor with a vertically aligned motor shaft that is directly or indirectly connected to the pinion shaft. If a gear is preferably used as an indirect connection, it can further preferably be provided that this comprises exclusively vertical gear shafts. This design results in the drive unit extending essentially or predominantly in the vertical direction, but occupies a very small installation space transversely thereto and can thus be accommodated on a vertically extending post of the movable wing.

[0018] It is particularly preferred if the drive unit is accommodated in a vertically extending receiving space of the sash profile, in particular which forms a profile consisting of the central section or the central mullion. In this case, the receiving space can preferably be formed by a covered or at least coverable receiving groove of the sash profile, preferably which is open without a cover in the direction away from the glazing rebate of the sash profile. Such a receiving groove can be the so-called fitting groove of the sash profile. Therefore, standard profiles can very easily be equipped with a drive according to the invention, and in particular can also be retrofitted.

[0019] To simplify assembly of the components comprising the drive device, the drive unit with the drive motor is preferably removably fixed in the movable lift / slide sash in a receiving groove of the vertically running central mullion. The motor and the preferably adjacent gear are inserted, for example, from an open end of the vertical sash profile, e.g. the central mullion / centre section profile, into the recess or receiving groove, e.g. in a vertical direction or in the direction of the opening of the receiving groove. The torque reduced in the preferably used gear is transmitted to a rotatably mounted pinion shaft, which is also arranged in the recess of the receiving groove of the vertical sash profile, e.g. the central mullion / centre section profile.

[0020] The pinion shaft is made up of at least two sections: the upper pinion shaft section and the pinion. The upper pinion shaft section is detachably connected to the sliding element, which is loosely plugged onto the upper pinion shaft section. This plug-in connection creates little frictional resistance between the pinion shaft and the sliding element and is designed as a fit with radial play. The plug-in connection enables axial movement of the upper pinion shaft section into and out of the sliding element when the lifting and lowering wing is raised and lowered, in particular with an up and down stroke of several millimeters, e.g., approximately 6 mm.

[0021] The dimensions are selected so that the upper pinion shaft section remains at least partially in the sliding element when the lift-and-slide sash is lowered. The sliding element is slidably guided in the guide rail, which also includes the aforementioned rack area. The guide rail is firmly connected to the frame profile.

[0022] The maintained operative connection of the gears between the pinion and the rack ensures that when the lift-and-slide sash is raised, the pinion engages in the same toothed groove and does not separate from it. A collision or jamming of the pinion when the sliding sash is raised would lead to an unsteady movement, which is avoided by the invention.

[0023] Preferably, the toothings of the pinion and rack areas are each formed by vertically extending tooth elevations and tooth valleys.

[0024] The rotating pinion ensures the movement on the rack area and thus the movement of the lift-slide sash and remains in engagement with the rack area in all positions.

[0025] The pinion also has a dual function, namely the sliding function, which opens and closes the sliding door, and at the same time a drive function.

[0026] According to the invention, the sliding element is supported in the vertical direction by a stop step, on which the sliding element rests displaceably, which stop step is formed on at least one of the two guide webs. The sliding element thus preferably remains at a constant height, even when the sash is raised or lowered. This ensures that it remains securely in the guide groove.

[0027] The stop step can be formed, for example, by the upper end of the rack area in the vertical direction and / or a step projecting into the interior of the guide groove, preferably which is formed on the guide web which is opposite the guide web with the rack area, in particular wherein a further step is formed vertically below the step, and between the steps a recess is formed which is open and points away from the guide groove and into which a sealing element engages.

[0028] The guide rail is particularly preferably mounted in a receiving groove on the upper frame profile of the frame, in particular one that is open toward the upper horizontal profile of the lift-and-slide sash. The guide rail can thus be designed as a separate element from the frame profile. This also facilitates retrofitting by replacing existing guide rails with one according to the invention.

[0029] Depending on the design, the guide rail can be made of one or more parts. The guide rail is preferably always firmly connected to the frame profile in a receiving groove and has the aforementioned guide groove, which is preferably formed by two parallel, spaced-apart guide webs. The guide groove ensures precise guidance of the sliding element longitudinally and transversely to the guide rail. The sliding element is slidably mounted in the guide groove in a transverse alignment between the guide webs and preferably in a vertical direction on the upper edge of the rack area or another support step. The sliding element thus stabilizes the travel path and determines and maintains the distance between the pinion and rack, thus performing a positioning function.

[0030] In one possible embodiment, the invention can also provide for the sliding element to be adjustable in width. Preferably, the width is considered in the direction perpendicular to the direction of displacement of the sliding element. In particular, the play between the sliding element and the guide webs and / or the play between the pinion and the rack can be adjusted in this way.

[0031] A preferred embodiment for a guide rail, which is characterized by very economical production, has a rack section that is milled into a subsequent machining process, e.g., in plastic or metal. The guide rail or its sub-element can be designed as an extruded profile.

[0032] The invention can also provide that the guide rail is formed in several parts by a guide rail base profile, to which at least one of the guide webs forming the guide groove can be fastened as a separate element, preferably detachably fastened, in particular can be inserted into the guide rail base profile.

[0033] For example, exactly one of the two guide webs can be fastened to the guide rail base profile as a separate element and the other of the two guide webs can be formed integrally with the guide rail base profile.

[0034] The material combination of the pinion and rack components can consist of metals and their alloys, plastics and metals, or plastics alone. The key is to minimize material abrasion and prevent premature wear of the components.

[0035] Thus, in a further development of the invention, it can be provided that the material of the rack region is different from the material of the guide rail profile and / or the remaining region of the guide web having the rack region, preferably formed as a separate element. For example, the material of the rack region and / or pinion can be made of metal, and the material of the guide rail profile and / or the remaining region of the guide web having the rack region, preferably formed as a separate element, can be made of plastic.

[0036] The rack portion is preferably integral with the guide web. Alternatively, the rack portion can be bonded or otherwise connected to the guide web. Preferably, the guide web and the rack portion consist of a plastic part produced by injection molding or a die-cast part and are essentially I-shaped in cross-section.

[0037] To simplify assembly, all components of the drive device are mounted in the lift-and-slide sash and guide rail before installation.

[0038] Correct movement of the lift / slide sash towards the frame profile according to manual or automatic switching instructions is achieved by the drive unit, which is arranged so that it can be moved along the frame profile in the sash, having a horizontally fixed position with the movable sash. This enables horizontal adjustment of the sash from a closed position to an open position. In addition, the sash can be moved to a locked closed position relative to the frame profile and from the locked closed position to a raised position for sliding. When the sash is lifted and removed from the track or lowered onto the track, the sliding element in the guide rail slides along the lateral stabilizing bars in the guide groove.

[0039] The sliding element can preferably be made of a plastic, e.g. Teflon or of a metal, e.g. sintered bronze.

[0040] Preferably, the electrical supply lines to the drive unit can be installed concealed and integrated into the window or door. To this end, all contact points form a connecting transmission chain of electrical current to the individual functional components via control and / or power lines, starting from the power source to the drive device and preferably further to a battery.

[0041] The invention can thus generally provide that the drive unit draws its energy from an accumulator which is arranged in the wing, preferably in the same receiving space in which the drive unit is arranged.

[0042] This accumulator can preferably be charged at least in the closed position of the sash by contacting contacts on the sash profile and frame profile.

[0043] The contact points can preferably also be positioned between the individual functional components. This also transfers the contact and the stored current of the accumulator to the drive motor during the active movement of the sash when raising, lowering, or sliding. With the functional components arranged in the receiving groove of the drive unit, the control and / or power lines preferably run concealed within the receiving groove. The contact points bridge the power and control signal supply within the receiving groove of the movable sash and from the sash to the frame profile to the power line towards the power source. The drive unit can usually be installed in the window or door without additional milling.

[0044] Thus, a battery is advantageously mounted on the lift-and-slide sash, which is in, preferably continuous, electrical contact with the drive device during movement of the movable sash or when the sash is at rest. Preferably, in a rest position, for example, in the closed or locked position, the movable sash receives current bridging the frame profile via a contactor arranged as an extension of the rack area, which has a contact point that establishes electrical contact with a power source located on the frame profile or in a building wall, to the drive unit.

[0045] In a preferred embodiment, the accumulator, or battery for short, is concealed in the receiving groove of the vertical sash profile of the lift-and-slide sash, particularly the one that contains the drive, preferably forming the center section, close to the drive motor. This ensures a secure power supply from the power source to the drive motor. Furthermore, the visual appearance of the window or door remains unaffected by the power supply chain, since all components of the drive device are concealed within the window or door.

[0046] The invention is explained in more detail below with reference to the drawings.

[0047] The figures show in detail: Fig. 1Front view of a closed lift-sliding door Fig. 1aSectional view AA of the Fig. 1 with lowered lift-slide sash and a one-piece guide rail with integrated rack area Fig. 1b Sectional view AA of the Fig. 1with raised lift-sliding sash and a one-piece guide rail with integrated rack area Fig. 2aSectional view AA of the Fig. 1 with lowered lift-slide sash and a two-part guide rail with inserted guide bar with rack area Fig. 2bSectional view AA of the Fig. 1 with lifted lift-sliding sash and a two-part guide rail with inserted guide bar with rack area Fig. 3aSectional view AA of the Fig. 1 with lowered lift-slide sash and a two-part guide rail with inserted guide bar without rack area Fig. 3bSectional view AA of the Fig. 1 with lifted lift-slide sash and a two-part guide rail with inserted guide bar without rack area Fig. 3c'Detail view of a guide rail for an embodiment of a guide bar with recess between two steps for a stepped sliding element Fig. 3cSectional view AA of the Fig. 1with raised lift-and-slide sash and a two-part guide rail with inserted guide bar with recess and a stepped guide glider Fig. 4aIsometric view with lowered lift-and-slide sash Fig. 4bIsometric view with raised lift-and-slide sash

[0048] In Figure 1 A front view of a closed lift-and-slide door 100 according to the invention is shown. The lift-and-slide leaf 1 is liftable and, in the raised position, can be moved to the right. The fixed leaf 2 is stationary. Both leaves are held in the frame 3 and arranged parallel to each other.

[0049] Figure 1ashows a sectional view AA in a sectional plane perpendicular to the sliding direction with the lift-and-slide sash 1 lowered and a one-piece guide rail 10 with an integrated rack area 14 on one of the guide webs 12, 12', which form the guide groove 13 between them. The sectional view AA intersects the fixed sash 2 with a view of the lift-and-slide sash 1. In the lowered state, the lift-and-slide sash is fixed; this can be any open window position or the fully closed position.

[0050] The components belonging to the drive assembly are releasably fixed in the movable lift-and-slide sash 1 in a receiving groove of the vertically extending post, preferably forming the center post in the closed position. The drive motor 50 and the adjacent gear 40 are inserted into the recess or receiving groove from an open end, particularly the upper end, of the vertical center post.

[0051] The vertically aligned pinion shaft is formed from at least two sections, here an upper pinion shaft section 21 and the pinion 22. The upper pinion shaft section 21 lies above the pinion 22. The lower pinion shaft section 23, which lies below the pinion 22, transmits the torque from the gear to the pinion 22. The pinion 22 is at least partially engaged with the rack section 14 even when the lift-slide wing 1 is in the lowered position. In the raised position, the pinion 22 is engaged with the rack section 14 over a larger area, preferably over its entire axial height.

[0052] The upper pinion shaft section 21 is detachably connected to a sliding element 30, which is loosely fitted onto the upper pinion shaft section 21. The upper pinion shaft section 21 is rotatably mounted in the sliding element 30, but is at least substantially radially fixed, in particular except for a radial play between the outer diameter of the upper pinion shaft section 21 and the inner diameter of the bore in the sliding element 30.

[0053] The sliding element 30 is arranged in a guide groove 13 of the guide rail 10. The guide rail 10 is fixed in the fastening groove 3' of the frame profile 3. The guide rail 10 and its guide groove 13 extend in the sliding direction of the sliding / lifting sash 1.

[0054] The guide rail 10 is positioned at the correct distance and fit in the upper horizontal frame profile 3 via webs pointing towards the frame profile and engaging in the fastening groove 3', e.g. the positioning webs 11, 11'.

[0055] On the side of the guide rail facing away from the frame profile, two parallel guide webs 12, 12', in particular of different lengths, form the guide groove 13 between them. In this embodiment, one of the guide webs, here the guide web 12, also has a rack area 14. This is arranged at the free end of the guide web 12, with the rack area 14 facing towards the interior of the groove and the teeth of the pinion 22 meshing therein. The guide web 12 can be thickened at the location of the rack area 14 compared to the remaining area of ​​the guide web 12.

[0056] The rack area 14 preferably also serves as a support for the sliding element 30 and holds it securely in the guide groove 13. The sliding element 30 is held in the guide groove 13, in particular in a fit with play, and can be moved securely along the guide rail 10 therein.

[0057] The guide webs 12, 12' secure the guide slider 30 perpendicular to the direction of displacement.

[0058] Figure 1b shows the sectional view AA with the lift-and-slide sash 1 raised and a one-piece guide rail 10 with an integrated rack section 14. The guide rail 10 is preferably extruded in one piece. Preferably, the teeth in the rack section 14 are subsequently formed, e.g., milled.

[0059] The plug connection between the upper pinion shaft section 21 and the sliding element 30, which is formed with a fit with radial play, enables an up and down stroke, e.g. of several millimeters, in particular of approximately 6 mm, when lifting and lowering the lifting-sliding wing.

[0060] Since the pinion 22 is at least partially meshed with the rack area 14, even in the lowered sash position, a permanent operative connection between the pinion 22 and the rack area 14 is ensured. A separation of the pinion and the rack area could lead to jamming upon re-entering the rack area 14 and, as a result, to uneven running of the lift-and-slide sash 1, which is hereby avoided according to the invention.

[0061] When the lift-and-slide sash 1 is in the raised position, the pinion 22 is fully engaged with the rack portion 14 and can directly transmit the drive torque generated by the drive motor 50 and the preferably provided gear 40 to the rack portion 14, so that the lift-and-slide sash 1 can roll along the rack portion 14 and be moved forward. At the same time, the lift-and-slide sash 1 is indirectly guided along the guide rail 10 in the guide groove 13 via the connection of the upper pinion shaft section 21 to the sliding element 30.

[0062] Figure 2ashows a sectional view AA with lowered lift-slide sash 1 and a two-part guide rail 10 with inserted guide web 12 as a separate element. This separate element is thus formed by a rack profile 15. In this embodiment, the guide rail 10 consists of two profiles. The guide web 12, which forms the lateral boundary of the guide groove 13, is not extruded as in the aforementioned embodiments, but is subsequently attached as a separate element with a rack area 14, i.e. as a rack profile 15, to a guide rail base profile, e.g., inserted into it, which here only comprises the other opposite guide web 12'.

[0063] Instead of the extruded guide web 12 with rack section 14 of the previous design, a separate rack profile 15 with a molded rack section 14 is used. This variant offers several advantages. For example, it is suitable for creating the contact area between the pinion 22 and the rack section 14 in a wide variety of material combinations. Furthermore, a separate guide web 12 or rack profile 15 with a rack section 14 makes it easier to achieve compatibility with differently dimensioned guide rails and frame profiles.

[0064] Figure 2b shows the sectional view AA with lifted lift-slide sash 1 and the two-part guide rail 10 with inserted guide bar 12 with rack area 14 of the Figure 2a The lift-sliding wing 1 is raised by several millimeters, e.g., approximately 6 mm, compared to the lowered position. The pinion 22 is in Figure 2apartially engages with the rack area 14 and is lifted upwards from this position during the lifting process and remains in the same gearing situation, only displaced by the stroke. The upper pinion shaft section 21 is pushed further into the sliding element 30 by the amount of the stroke. The sliding element 30 sits loosely on the upper pinion shaft section 21, so that the upper pinion shaft section 21 can be moved up and down in the cylindrical opening of the sliding element 30 in the axial direction of the pinion shaft. The sliding element 30 sits on the pinion shaft 20, guides the lifting / sliding wing 1 precisely, and stabilizes the travel path. The pinion 22 ensures the movement and transmits the drive torque of the motor 50.

[0065] In the raised position of the lift-and-slide wing, the pinion 22 engages with the teeth of the rack section 14 over its entire available height and can interact with them. The lift-and-slide wing 1 is ready for travel and is rolled along the guide rail 10 by the driving pinion 22 for the desired travel path.

[0066] Figure 3a shows the sectional view AA with lowered lift-slide sash 1 and a two-part guide rail 10 with inserted guide web 12', which is opposite the guide web 12 with rack area 14. In this embodiment, the guide rail 10 again consists of two profiles. The guide web 12' according to Figure 2a, which forms the lateral boundary of the guide groove 13 and is opposite the stabilizing web 12 with the rack area 14, is not extruded as in the aforementioned embodiments, but is subsequently attached to a guide rail base profile, in particular inserted therein. Instead of the extruded stabilizing web 12', a guide web 12' is used as a separate additional profile 16, which, after attachment, forms the stabilizing web 12', or rather acts like it.

[0067] Figure 3b shows the sectional view AA with the lift-and-slide sash 1 raised and the two-part guide rail 10 with inserted separate guide web 12' or additional profile 16.

[0068] The function of the guide groove 13 is fulfilled in every embodiment of the Figures 1 to 3 the intended purpose of enabling movement of the sliding element 30 along the sliding direction.

[0069] Figure 3c'shows a detailed view of the guide rail 10 in a further embodiment of a separate additional profile 16 for forming the guide web 12' with a step 18 pointing into the interior of the groove 13 of the area of ​​the additional profile 16 forming the groove wall, so that a correspondingly stepped guide slider 30 can be received in the groove 13.

[0070] The additional profile 16 can be designed with two steps, so that between the steps 18 and 18' a receiving space is formed which extends in the sliding direction and is open in the direction away from the groove 13 and which offers space for a seal 17 to also function in the raised state, as in Figure 3c shown, to fit snugly and ensure smooth running of the pinion shaft. The shape of the stepped additional profile 16 requires the stepped shape of the guide slider 30 so that both contours lie against each other in a corresponding manner.

[0071] The Figure 4a and 4bshow isometric views with lowered and raised lift-slide sash 1. In the lowered lifting position in Figure 4a the pinion 22 is partially engaged with the rack area 14 and in the raised lifting-sliding position 1 in Figure 4b the pinion is in full mesh with the rack area 14. List of reference symbols

[0072] 100Lift-and-slide door / window 1Lift-and-slide sash 2Fixed sash 3Frame profile 3'Fastening groove 10Guide rail 11, 11'Positioning bars 12, 12'Guide bars 13Guide groove 14Rack area 15Rack profile (inserted), forming guide bar 12 16Additional profile (inserted), forming guide bar 12' 17Seal 18, 18'Steps 20Pinion shaft 21Upper pinion shaft section 22Pinion 23Lower pinion shaft section 24Bearing device 30Sliding element 31Guide surfaces (clearance fit) 32Lower edge (rests on rack, prevents falling) 40Gearbox 50Motor

Claims

1. Lifting-sliding door or window comprising a lifting-sliding leaf (1), a fixed leaf (2) and a border frame (3), wherein the lifting-sliding leaf (1) is adjustable in the border frame (3) between a raised and a lowered position, and in the raised position, by means of carriages disposed on the lower leaf profile, is displaceable in a displacement direction on a running rail on the lower frame profile of the border frame, and is guided in a guide rail on the upper frame profile of the border frame (3), wherein the lifting-sliding leaf (1) in a vertical leaf profile has a drive unit (40, 50) by which a vertically aligned pinion shaft (20) supporting a pinion (22) is able to be driven, wherein the guide rail (10) on the upper frame profile between two guide webs (12, 12'), preferably two guide webs (12, 12') spaced apart in parallel, forms a guide groove (13) in which a sliding element (30) is inserted so as to be displaceable in the displacement direction, and in the raised as well as the lowered position of the lifting-sliding leaf, an upper pinion shaft portion (21) lying in the vertical direction above the pinion (22) is inserted in the sliding element (30) so as to be rotatably mounted therein, and the pinion (22) on a rack region (14) bears so as to mesh with one of the guide webs (12, 12') delimiting the guide groove, characterized in that the sliding element (30) in the vertical direction is supported by a detent step on which the sliding element bears so as to be displaceable thereon and which is formed on at least one of the two guide webs (12, 12'), and in the lowered position of the lifting-sliding leaf (1) the toothing of the pinion (22) in some regions is inserted in the toothing of the rack region (14), and in the raised position of the lifting-sliding leaf (1) the toothing of the pinion (22) is inserted completely in the toothing of the rack region (14).

2. Lifting-sliding door or window according to Claim 1, characterized in that the drive unit (40, 50) comprises a drive motor (50) having a vertically aligned motor shaft, the latter in particular being connected to the pinion shaft (20) by means of a gearbox (40) preferably comprising exclusively vertical gear shafts.

3. Lifting-sliding door or window according to one of the preceding claims, characterized in that the drive unit (40, 50) is received in a vertically extending receptacle space of the leaf profile, which in particular forms a profile of the central section, preferably wherein the receptacle space is formed by a covered or at least coverable receptacle groove of the leaf profile which without a cover preferably is open in the direction away from the glazing rebate of the leaf profile.

4. Lifting-sliding door or window according to one of the preceding claims, characterized in that the toothings of the pinion (22) and the rack regions (14) each have vertically extending tooth elevations and tooth troughs.

5. Lifting-sliding door or window according to one of the preceding claims, characterized in that the detent step is formed by a. the top end in the vertical direction of the rack region (14), and / or b. a step (18) projecting into the interior of the guide groove (13), preferably formed on that guide web (12') that is opposite the guide web (12) having the rack region (14), in particular wherein formed vertically below the step (18) is a further step (18'), and between the steps (18, 18') is formed a recess which is open in the direction away from the guide groove (13) and in which a sealing element (17) engages.

6. Lifting-sliding door or window according to one of the preceding claims, characterized in that the guide rail (10) is fastened in a receptacle groove (3') on the upper frame profile of the border frame (3), in particular which is open in the direction towards the upper horizontal profile of the lifting-sliding leaf (1).

7. Lifting-sliding door or window according to one of the preceding claims, characterized in that the guide rail is formed in multiple parts by a guide rail base profile, to which at least one of the guide webs (12, 12') forming the guide groove (13) is able to be fastened, preferably releasably fastened, as a separate element, in particular is insertable into the guide rail base profile, furthermore preferably wherein exactly one of the two guide webs (12, 12') is able to be fastened to the guide rail base profile as a separate element, and the other one of the two guide webs (12', 12) is formed in one piece with the guide rail base profile.

8. Lifting-sliding door or window according to Claim 7, characterized in that the material of the rack region is different from the material of the guide rail profile and / or remaining region of the guide web (12) having the rack region, which guide web is preferably formed as a separate element, in particular, the material of the rack region (14) and / or pinion (22) being formed from metal and the material of the guide rail profile (10) and / or the remaining region of the guide web (12) having the rack region, which guide web is preferably formed as a separate element, being formed from plastics material.

9. Lifting-sliding door or window according to one of the preceding claims, characterized in that the guide rail (10) and / or a guide web (12, 12') formed as a separate element are / is formed as an extruded profile into which the rack region (14) is incorporated by subsequent machining, in particular by milling.

10. Lifting-sliding door or window according to one of the preceding claims, characterized in that the sliding element (30) is adjustable in terms of its width, in particular when viewed perpendicularly to the displacement direction.