Lifting and sliding device

Abstract

The invention relates to a lift-and-slide device (10), in particular a lift-and-slide door or lift-and-slide window, with a frame (12) and a sash (16) which is movable relative to the frame (12) between an open position and a closed position along a sliding axis (z), and which is movable along a lifting axis (y) and relative to at least one carriage (20) supporting the sash (16) between a lowered position and a raised position, wherein at least one first locking element (44) connected to the frame (12) is provided and wherein a second locking element (34) is arranged on a part of the carriage (20) which is fixed along the lifting axis (z), wherein one of the locking elements (34, 44) has a T-shaped cross-section and the other locking element (44, 34) has a cross-section that is at least partially complementary to the T-shaped cross-section, in particular a C-shaped cross-section.wherein the second locking element (34) – in the closed position of the sash (16) and regardless of its position along the lifting axis (y) – engages under the at least one first locking element (44), so that the sash (16) is secured along the lifting axis (y) against being lifted beyond the raised position.

Description

[0001] The invention relates to a lifting and sliding device with features of the preamble of claim 1.

[0002] A lift-and-slide device is known, for example, from EP 2 476 829 A1. The lift-and-slide construction described there features, for burglar protection, a first locking element attached to a frame and a second locking element attached to a sash that is movable relative to the frame. The second locking element is designed as a locking bolt that, when the sash is closed, engages in a cavity (hollow profile) of the first locking element. The cavity of the first locking element has a lower and an upper boundary, which serves as a lift-out protection for the sash-side locking bolt. The locking bolt can thus move within the space of the first locking element according to the stroke between the lowered and raised positions of the sash.Further movement of the sash and locking bolt beyond the raised position is to be blocked by the upper boundary of the cavity. Besides its comparatively complex design, a disadvantage is that the locking elements must be installed precisely and adjusted precisely during installation and after a settling phase of the lift-and-slide mechanism. This ensures that, when the sash frame is closed, movement into the lowered and raised positions is not obstructed by the locking elements, while reliably preventing the sash frame from being raised beyond the raised position.

[0003] Another lift-and-slide device with a fixed frame and a sash that can be moved relative to it is known from EP 3 425 149 A1. This lift-and-slide device, which is a lift-and-slide device with features of the preamble of claim 1, has a frame-locking element, a carriage-locking element, and a sash-locking element. In the closed position of the sash, the frame-locking element and the carriage-locking element interact in such a way that the sash is secured against being lifted beyond its raised position (lifting out). In the closed position of the sash and when the sash is in the lowered position, the frame-locking element and the sash-locking element interact in such a way that the sash is secured against being moved into the open position. The lift-and-slide device has a comparatively complex structure with a large number of components.

[0004] The invention is based on the objective of providing a burglar-resistant lift-and-slide device with a structurally simple and stable design.

[0005] The invention solves this problem by means of a lifting-sliding device with the features of claim 1.

[0006] A lift-and-slide device is a door or window arrangement that can be designed in particular as a lift-and-slide door or lift-and-slide window.

[0007] The lift-and-slide mechanism comprises a (stationary) frame and a sash that is movable relative to the frame between an open and a closed position along a sliding axis (z). The lift-and-slide mechanism can be configured for manual movement of the sash by an operator (e.g., by gripping a handle) or for motorized movement of the sash by a drive unit. In the latter case, a drive unit for moving the sash can be arranged on the lift-and-slide mechanism, acting between the frame and the sash.

[0008] The sash is movable or repositionable along a lifting axis (y) and relative to at least one carriage supporting the sash, preferably two or more carriages supporting the sash, between a lowered position and a raised position. The lift-and-slide mechanism can be configured for manual movement of the sash between a lowered and a raised position by an operator or for motorized movement by a drive unit. In the former case, a manually operated gearbox acting between the frame and the sash can be provided, which an operator can operate by means of a handle, e.g., by pivoting a handle. In the latter case, a motorized drive unit for raising and lowering the sash can be arranged on the lift-and-slide mechanism, acting between the frame and the sash.

[0009] Furthermore, at least one first locking element (frame-locking element) connected to the frame is provided. Additionally, a second locking element (carriage-locking element) is arranged on a part of the carriage that is fixed along the lifting axis. The fixed part of the carriage does not change its position along the lifting axis when the sash is raised or lowered.

[0010] One of the locking elements has a T-shaped cross-section, and the other locking element has a C-shaped cross-section that is at least partially complementary to the T-shaped cross-section. The locking elements are arranged such that the second locking element—in the closed position of the sash and regardless of its position along the lifting axis (y)—engages under the at least one first locking element, so that the sash (in the closed position) is secured along the lifting axis against lifting beyond the lowered position (possibly with the addition of any play between the first and second locking elements).

[0011] In other words, the locking elements are arranged such that the second locking element engages the at least one first locking element – ​​in the closed position of the sash and regardless of its position along the lifting axis (y) – in such a way that the sash (in the closed position) can only be lifted from the lowered position, if at all, by a clearance existing between the first and second locking elements. This clearance is in particular less than 1 mm (millimeters), preferably less than 0.8 mm, more preferably less than 0.6 mm, and most preferably less than 0.5 mm, thus only a few tenths of a millimeter.

[0012] The proposed design creates a burglar-resistant lift-and-slide system with a simple and robust construction. The locking elements, one with a T-shaped cross-section and the other with a cross-section that is at least partially complementary, provide particularly strong burglar protection against prying the sash when it is closed. The locking element with the T-shaped cross-section is enclosed by the other locking element, offering high resistance to forced entry. The proposed design requires only a relatively small number of components, reducing installation effort and time. Since the locking elements are attached directly to the frame or carriage, no pre-assembly of parts is necessary. Retrofitting the locking elements to existing lift-and-slide systems is also possible.

[0013] In a preferred embodiment, the lower engagement of the second locking element (on the first locking element) can be achieved with a clearance of less than 10 percent, preferably less than 8 percent, more preferably less than 6 percent, and most preferably less than 5 percent, of the sash's stroke between the lowered and raised positions. This contributes to a compact design of the locking elements, reducing material and installation space requirements. Furthermore, it practically prevents any potential lifting movement of the sash (attempted break-in). In a specific embodiment of the lift-and-slide mechanism, the stroke can be, for example, 7 mm, with the clearance between the locking elements being only a few tenths of a millimeter, as explained above.

[0014] Advantageously, the locking elements can be positioned such that, when the sash is closed, they engage with each other along the axis of movement (z), particularly at the rear end of the sash (located in the center of the frame). This contributes to good burglary resistance, as it secures the rear end of the sash, which is typically less secure than the front end (which can be locked to the frame).

[0015] According to the invention, the locking elements are further configured such that the locking element with a T-shaped cross-section is engaged or gripped from below or around the locking element with the C-shaped cross-section, which is at least partially complementary to the T-shaped cross-section, when the sash is closed. This double-sided engagement ensures a particularly stable coupling of the locking elements and thus promotes a high level of burglary resistance.

[0016] In a preferred embodiment, the second locking element (carriage locking element) can have a groove, in particular a T-slot or a dovetail groove, extending along or parallel to the sliding axis (z), wherein the first locking element (frame locking element) is received in the groove at least partially, preferably predominantly or completely, when the sash is closed. This contributes to a particularly stable coupling of the locking elements when the sash is closed. Furthermore, such grooves facilitate the manufacturing of the locking elements.

[0017] Advantageously, the second locking element (carriage locking element) can have opposing groove edge sections (which taper the clear groove cross-section) that engage the first locking element from opposite sides when the sash is closed. This facilitates coupling between the locking elements. The groove edge sections thus achieve, on the one hand, an under-engagement or engagement of the first locking element (e.g., a head section of the first locking element) and, on the other hand, guidance of the first locking element (e.g., a shaft section of the first locking element).

[0018] Specifically, the first locking element can be designed as at least one mushroom-headed tenon attached to the frame. This is a proven design element in hardware technology, capable of withstanding high tensile and shear loads. Furthermore, it is a compact locking element (requiring minimal material and installation space). The mushroom-headed tenon can be screwed to the frame. The mushroom-headed tenon is designed and / or intended to correspond with, or engage in, the groove formed in the second locking element, particularly a T-slot. The use of several mushroom-headed tenons arranged one behind the other along or parallel to the sliding axis (z), each screwed to the frame, is also conceivable.

[0019] Alternatively, the first locking element can have a locking body that extends along or parallel to the displacement axis (z) with a T-shaped or dovetail-shaped cross-section (of a defined length) and is attached to the frame. This contributes to an even more stable coupling of the locking elements, as higher forces can be transmitted due to larger contact areas. The locking body can be screwed to the frame by means of one or, preferably, several screws. This contributes to a comparatively stable anchoring of the locking body to the frame. In particular, the locking body can have three, preferably countersunk, through holes for fastening (e.g., to the frame) by means of three screws.

[0020] In a preferred embodiment, the second locking element (carriage locking element) can have a T-shaped cross-section with lateral projections, wherein, in the closed position of the sash, the lateral projections engage under the at least one first locking element (frame locking element). This also achieves a stable coupling of the locking elements, preventing the sash from being lifted beyond the raised position (prying open) and thus increasing burglary resistance.

[0021] Specifically, the lateral projections can have either a rectangular or trapezoidal cross-section. Projections with a rectangular cross-section are relatively easy to manufacture. Projections with a trapezoidal cross-section, due to their comparatively large surface area and a potentially resulting wedging effect, can transmit even higher forces. This can further increase burglary resistance.

[0022] The lateral projections can expediently have a recess at their end facing the frame (downwards along the direction of gravity, e.g., towards a bottom-side frame profile), each of which corresponds to a step on the first locking element. The step(s) serve to support a lateral projection "from below." In addition to guiding the movement of the sash, this also provides support for the lateral projections. The recess(s) extend along or parallel to the axis of movement. The step(s) also extend along or parallel to the axis of movement.

[0023] Advantageously, the first locking element (frame-locking element) can have at least one or two overlapping sections which, when the sash is closed, each overlap one of the lateral projections of the second locking element. This allows for a stable coupling of the locking elements, with the overlapping section(s) reliably preventing the sash from being lifted beyond its raised position. The overlapping sections are preferably arranged opposite each other, so that they each encompass the lateral projections. The overlapping sections can collectively form a substantially C-shaped geometry. Below each overlapping section, a clearance can be formed, preferably corresponding to, and in particular complementing, the lateral projections of the second locking element.

[0024] The first locking element (frame-locking element) can be advantageously designed in multiple parts, particularly consisting of two mirror-symmetrical parts. A multi-part design of the first locking element contributes to a space-saving construction, as the first and second locking elements do not need to be positioned one above the other, but can be arranged side by side. Furthermore, assembly is simplified, since the two parts of the first locking element and the second locking element can be assembled in any order. A mirror-symmetrical design of the parts contributes to efficient manufacturing, as the number of different components can be reduced. Each part of the first locking element has one or more openings through which it can be attached to the frame using screws.

[0025] As previously mentioned, the first locking element can be attached to the frame, in particular by means of one or more screws. This contributes to a structurally simple and particularly stable connection of the first locking element to the frame.

[0026] The invention is explained in more detail 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 shows an embodiment of a lifting and sliding device in a perspective view; Fig. 2 shows an enlarged view of the device shown in the illustration. Figure 1 marked section (Detail A); Fig. 3a, leg carriage of the lifting-sliding device in a perspective front view ( Figure 3a ) and a perspective rear view ( Figure 3bFigure 4 shows a section through the carriage and the locking elements in the frame-mounted state; Figure 5 shows a section of the frame of the lift-and-slide mechanism with the first locking element mounted on it in a perspective view; Figures 6-8 show the sequence of movements when unlocking the lift-and-slide mechanism or when lifting and sliding the sash, each in an enlarged partial view; and Figure 9 shows an alternative design of the locking elements in a sectional view through the carriage and locking elements in the frame-mounted state.

[0027] One embodiment of a lifting and sliding device is in Figure 1The device 10 is shown in perspective and is designated overall by the reference symbol 10. It has a fixed, building-side frame 12 into which an optional fixed sash 14 is integrated. The device 10 also has a sliding sash 16, which moves along a displacement axis designated "z" between the... Figure 1 It is movable between the closed position shown and an open position (not shown).

[0028] The wing 16 is raised by means of a lifting device 28 (see Fig. 3a ) movable between a lowered position and a raised position along a lifting axis designated "y" (see Fig. 1 The lifting axis y runs vertically (along the direction of gravity g) and orthogonally to the (horizontal) displacement axis z.

[0029] The lifting device 28 is part of a carriage 20 (see Figures 3a and 3b) and is operated by motor or via a handle or grip 18, for which purpose the grip 18 extends from its in Figure 1 The depicted upward-pointing position is rotated by an angle of, for example, 90° or 180°.

[0030] This movement of the handle 18 is transmitted to the lifting device 28 via transmission elements that are known per se and therefore not shown. The lifting device 28 has an upwardly pointing support surface 30, which supports the wing 16 and can thus be raised and lowered.

[0031] The carriage 20 has a part that is stationary with respect to the lifting axis y. This part of the carriage 20 includes, for example, rollers 22 which, viewed in the direction of the lifting axis y, remain continuously in contact with bottom rails 24 of the stationary frame 12, and cheeks 32 for mounting the rollers 22, which are also immovable with respect to the lifting axis y.

[0032] The lifting device 28 is arranged on the carriage 20 and in the Figures 3a and 3b The lifting device 28 is shown in a lowered position relative to the lifting axis. Actuation from this lowered position causes the wing 30, and thus the wing 16, to lift upwards (against the direction of gravity g).

[0033] A carriage locking element 34, sometimes referred to as the second locking element 34, is attached to the cheeks 32 of the carriage 20, and thus to a part of the carriage 20 that is not movable in the direction of the lifting axis y. The carriage locking element 34 preferably has a mounting section 36 for attachment to one cheek 32 or to both cheeks 32, and a locking section 38 that extends laterally away from the mounting section 36 (see also Figure 4). At the lower end of the fastening section 36, a triangular recess 37, for example, can be formed into which the rail 24 can penetrate.

[0034] In the example, the fastening section 36 and the locking section 38 form an L-shape (see below). Figure 4 The fastening section 36 and the locking section 38 are formed integrally. The connection between the carriage locking element 34 and the part of the carriage 20 that is fixed along the lifting axis y, in particular with at least one cheek 32 of the carriage 20, is preferably made by means of a screw connection 40.

[0035] The frame 12 has a bottom-side frame profile 42, which serves to arrange and fasten a frame-beam element 44 that is fixed in all spatial directions and which is referred to in some places as the first beam element 44 (see Figure 3a, 3b , 4 and 5). The frame-beam element 44 can be provided as a separate component and connected to the bottom-side frame profile 42, in particular screwed together.

[0036] The frame-beam element 44 has a bar body 45 with a T-shaped cross-section. In its installed state, the bar body 45 extends with its T-shaped cross-section along or parallel to the displacement axis z. The bar body 45 has a bar section 46 extending in a horizontal plane and a fastening section 48 that tapers in cross-section. In this example, the frame-beam element 44 is screwed to the frame 12 or to the bottom-side frame profile 42 by means of three screws 47, for which corresponding openings for the screws 47 are formed in the bar body 45.

[0037] The carriage locking element 34 has, in particular in the locking section 38, a cross-section complementary to the T-shaped cross-section of the frame locking element 44, preferably a C-shaped cross-section (see figure). Figure 4 A groove 50, here exemplified as a T-slot 50, is formed on the carriage locking element 34, in particular on its locking section 38. In the installed state, this groove extends along or parallel to the sliding axis z. When the sash 16 is closed, the frame locking element 44 is at least partially received in the groove 50. Thus, the frame locking element 44 can be located partially, predominantly, or completely in the groove 50 along the sliding axis z. At least the locking section 46 of the frame locking element 44 is received in the groove 50.

[0038] The frame-transom element 44 has opposing groove edge sections 52 and 54 that taper the clear groove cross-section and engage the frame-transom element 44, in particular its transom section 46, from two opposite sides. The engagement of the carriage-transom element 34 with the frame-transom element 44 is achieved with a clearance that is less than 10 percent of the stroke of the sash 16 between the lowered position and the raised position of the sash 16.

[0039] The carriage locking element 34 and the frame locking element 44 are positioned such that, when the sash 16 is in the closed position, they overlap with each other along the sliding axis z at the rear end of the sash 16' (located in the middle of the frame 12 when the sash 16 is in the closed position).

[0040] The proposed design has the effect that the carriage locking element 34 – in the closed position of the sash 16 and regardless of its position along the lifting axis y – engages the frame locking element 44 in such a way that the sash 16 (in the closed position) can only be lifted from the lowered position, if at all, by a clearance existing between the carriage locking element 34 and the frame locking element 44, as explained above. This provides anti-lift protection, which contributes to increased burglary protection.

[0041] The Figures 6 to 8 Illustrate the sequence of movements when unlocking the lift-and-slide mechanism 10 or when lifting and moving the sash 16 from the closed position of the sash 16.

[0042] In Figure 6The sash 16 is in the closed position and is in the lowered position relative to the lifting axis z. The first locking element 44 and the second locking element 34 are overlapping along the displacement axis z, and the second locking element 34 engages under the first locking element 44 (CT connection interlocks). Thus, apart from any play between the locking elements 34 and 44, the sash 16 is secured against lifting from the lowered position along the lifting axis y. In other words, the sash 16 can only be lifted from the lowered position along the lifting axis y by the amount of play existing between the carriage locking element 34 and the frame locking element 44, if at all. Manipulating the sash 16 from the lowered position is therefore prevented.

[0043] In Figure 7The wing 16 was moved into the position raised relative to the lifting axis y by means of the lifting device 28, e.g., as a result of actuation by the handle 18, whereby the wing 16 is still in the closed position. When the wing 16 is raised, the carriage 20, apart from the component having the wing 30 and coupled to the side panels 32, moves forward due to the coupling (coupling between the component with wing 30 and the side panels 32). Figure 7 (to the left). The first locking element 44 and the second locking element 34 are not overlapping along the displacement axis z. The second locking element 34 no longer engages under the first locking element 44 (CT connection released).

[0044] Figure 8Figure 1 shows a situation in which the sash 16 is in the position raised relative to the lifting axis y and has been moved a short distance along the displacement axis z towards the open position, with the carriage 20 and the second locking element 34 having passed the (frame-fixed) first locking element 44. As shown, the locking elements 34 and 44 move only along the displacement axis z (horizontally) relative to each other and must be overlapping or interlocking when the sash 16 is in the closed position.

[0045] Figure 9 shows an alternative design possibility of the locking elements 34, 44 in a sectional view through carriage 20 and locking elements 34, 44 in the state mounted on the frame 12.

[0046] The lifting-sliding device 10 according to the present design largely corresponds to that in connection with the Figures 1 to 8described embodiment, so that reference is made to the explanations therein to avoid repetition.

[0047] In contrast, the locking elements 34, 44 are designed differently (vice versa).

[0048] The carriage locking element 34 according to the present embodiment also has a fastening section 36 for attachment to one or both sides 32 of the carriage 20, as well as a locking section 38. The carriage locking element 34 has a T-shaped cross-section with lateral projections 60, 62, wherein the lateral projections 60, 62 engage under the frame locking element 44. In this example, the lateral projections 60, 62 each have a trapezoidal cross-section (the surface of the projections facing away from the bottom profile 42 is angled).

[0049] The frame-beam element 44 is designed in multiple parts, namely two mirror-symmetrical parts 44', 44'', each attached to the frame or to the bottom-side frame profile 42, in particular by means of screws 47. The frame-beam element 44 has an overlapping section 49, 49' on each of its parts 44', 44'', the overlapping sections 49, 49' each overlapping one of the lateral projections 60, 62. The frame-beam element 44 is designed in its overlapping sections 49, 49' to be complementary to the lateral projections 60, 62. Specifically, clearances 51, 51' are formed on the overlapping sections 49, 49', which have a contour complementary to the lateral projections 60, 62.

[0050] The lateral projections 60, 62 each have a recess 53, 53' at their end facing the frame 12, in particular the bottom-side frame profile 42, which each corresponds to a shoulder 55, 55' on the parts 44', 44" of the frame-beam element 44. In the assembled state, the recess 53, 53' and the shoulders 55, 55' each extend along or parallel to the axis of movement.

[0051] In the present embodiment, the effect is also achieved that the carriage locking element 34 (with its lateral projections 60, 62) – in the closed position of the sash 16 and regardless of its position along the lifting axis y – engages the frame locking element 44 (at its overlapping sections 49, 49') in such a way that the sash 16 (in the closed position) can only be lifted from the lowered position, if at all, by a clearance existing between the carriage locking element 34 and the frame locking element 44, as explained above. This also provides a lift-out protection that contributes to a higher level of burglary protection.

Claims

1. Lift-and-slide device (10), in particular lift-and-slide door or lift-and-slide window, comprising a frame (12) and a leaf (16) which is slidable relative to the frame (12) between an open position and a closed position along a sliding axis (z), and which is movable along a lifting axis (y) and between a lowered position and a raised position relative to at least one carriage (20) supporting the leaf (16), at least one first latching element (44) connected to the frame (12) being provided and a second latching element (34) being arranged on a part of the carriage (20) that is fixed along the lifting axis (y) relative to the frame (12), characterized in that one of the latching elements (34, 44) has a T-shaped cross section and the other latching element (44, 34) has a C-shaped cross section which is at least partially complementary to the T-shaped cross section, the second latching element (34), when the leaf (16) is in the closed position and irrespective of the position thereof along the lifting axis (y), engaging under the at least one first latching element (44), so that the leaf (16) is secured along the lifting axis (y) against lifting beyond the lowered position, the latching elements (34, 44) being designed in such a way that the latching element having a C-shaped cross section that is at least partially complementary to a T-shaped cross section engages under or engages around the latching element having the T-shaped cross section from two opposite sides when the leaf (16) is in the closed position.

2. Lift-and-slide device (10) according to claim 1, characterized in that the second latching element (34) engages under with a play which is less than 10 percent of a lifting path of the leaf (16) between the lowered position and the raised position.

3. Lift-and-slide device (10) according to claim 1 or claim 2, characterized in that the latching elements (34, 44) are positioned such that, when the leaf (16) is in the closed position, they are engaged one under the other along the sliding axis (z), in particular at the rear leaf end (16').

4. Lift-and-slide device (10) according to any of the preceding claims, characterized in that a groove (50), in particular a T-groove (50) or a dovetailed groove, is formed on the second latching element (34), which groove extends along or parallel to the sliding axis (z), the first latching element (44) being received at least partially in the groove (50) when the leaf (16) is in the closed position.

5. Lift-and-slide device (10) according to the preceding claim, characterized in that the second latching element (34) has mutually opposite groove edge portions (52, 54) which engage under the first latching element (44) when the leaf (16) is in the closed position.

6. Lift-and-slide device (10) according to any of the preceding claims, characterized in that the first latching element (44) is designed as at least one mushroom cam attached to the frame (12).

7. Lift-and-slide device (10) according to any of claims 1 to 5, characterized in that the first latching element (44) has a latching body (45) which extends along or parallel to the sliding axis (z) and which has a T-shaped or dovetailed cross section and is attached to the frame (12).

8. Lift-and-slide device (10) according to any of claims 1 to 3, characterized in that the second latching element (34) has a T-shaped cross section having lateral projections (60, 62), the lateral projections (60, 62) each engaging under the at least one first latching element (44).

9. Lift-and-slide device (10) according to the preceding claim, characterized in that the lateral projections (60, 62) each have a rectangular or trapezoidal cross section.

10. Lift-and-slide device (10) according to either of the two preceding claims, characterized in that the lateral projections (60, 62) each have a recess (53, 53') at the end thereof facing the frame (12), each of which recesses corresponds to a shoulder (55, 55') on the first latching element (44).

11. Lift-and-slide device (10) according to any of the three preceding claims, characterized in that the first latching element (44) has at least one over-engagement portion (49, 49'), each of which, when the leaf (16) is in the closed position, engages over one of the lateral projections (60, 62) of the second latching element (34).

12. Lift-and-slide device (10) according to any of the four preceding claims, characterized in that the first latching element (44) is formed from multiple parts, in particular from two mirror-symmetrical parts (44', 44").

13. Lift-and-slide device (10) according to any of the preceding claims, characterized in that the first latching element (44) is attached to the frame (12), in particular screwed to the frame (12).

Images