Parallel opening device and door or window assembly with such a parallel opening device

Abstract

The invention relates to a parallel display device (10) comprising a first scissor arm (12) and a second scissor arm (14), which are pivotally connected to each other by means of a first scissor joint (16) and are each pivotally mounted at one end on a first guide rail (18), a third scissor arm (20) and a fourth scissor arm (22), which are pivotally connected to each other by means of a second scissor joint (24) and are each pivotally mounted at one end on a second guide rail (26), wherein the scissor arms (12, 14, 20, 22) each extend along a central longitudinal axis (M), and wherein the second scissor arm (14) is pivotally connected to the third scissor arm (20) via a first coupling joint (30) and the first scissor arm (12) is pivotally connected to the fourth scissor arm (22) via a second coupling joint (32), such that the guide rails (18,26) are transferable between a position not issued and a position issued.

Description

[0001] The invention relates to a parallel opening device for opening a sash of a door or window assembly parallel to a frame of the door or window assembly. The invention further relates to a door or window assembly with the features of the dependent claim.

[0002] In recent years, architects and planners have often designed door or window installations with a sash that opens parallel to the frame, for stylistic reasons, with a narrow sash width and a comparatively large opening width. With a sufficiently stable design, a parallel opening mechanism can only be installed with a small opening width due to the narrow sash width, or compromises in stability must be made to achieve the desired opening width, for example, by using thin scissor arms. The installation space available between the sash and frame of a door or window installation for a parallel opening mechanism is always quite limited.

[0003] Parallel opening devices for opening a sash of a door or window assembly parallel to a frame are known from the prior art. For example, EP 2 696 017 B1 discloses a device for opening windows and doors whose scissor arms each have a step and a recess, allowing the scissor arms to interlock. The recesses weaken the cross-section and thus the stability of the scissor arms, while the steps contribute to more complex manufacturing and increased space requirements. Therefore, there is potential for optimization.

[0004] The invention is based on the objective of providing a parallel opening device that has both sufficient stability and fits into common profiles of door or window arrangements.

[0005] The invention solves this problem by means of a parallel display device according to claim 1.

[0006] The parallel opening device is designed and / or intended for the parallel opening of a sash of a door or window arrangement relative to a frame of the door or window arrangement.

[0007] The parallel display device has a first scissor arm and a second scissor arm. These form a first pair of scissors or first pair of scissor arms. The first scissor arm and the second scissor arm are articulated to each other by means of a first scissor joint and are pivotally mounted at one end of each on a first guide rail.

[0008] The parallel display device has a third scissor arm and a fourth scissor arm. These form a second pair of scissors or a second pair of scissor arms. The third and fourth scissor arms are articulated to each other by means of a second scissor joint and are pivotally mounted at one end of each on a second guide rail.

[0009] The scissor arms each extend along a central longitudinal axis. The first and second scissor joints can each be located in a central section of the scissor arms (e.g., in the middle third of the scissor arms relative to the central longitudinal axis).

[0010] The second scissor arm is articulated with the third scissor arm via a first coupling joint (at its end furthest from the first guide rail). The first coupling joint is located specifically at the end of the third scissor arm that faces away from the second guide rail (pivot bearing of the third scissor arm). The first scissor arm is articulated with the fourth scissor arm via a second coupling joint (at its end furthest from the first guide rail). The second coupling joint is located specifically at the end of the fourth scissor arm that faces away from the second guide rail (pivot bearing of the fourth scissor arm).

[0011] As a result of this design, the guide rails can be moved between a non-extended position, in which the guide rails are only slightly spaced apart from each other (e.g. by less than 10% of the length of the guide rail) or are in contact with each other, and an extended position, in which the guide rails are further apart from each other to extend the wing than in the non-extended position (e.g. by more than 25% of the length of the guide rail).

[0012] The scissor arms are each curved at the end where they are pivotally mounted on one of the guide rails about a pivot axis, in the direction of a gap between the two guide rails (end curvature of the scissor arms towards the gap). The pivot axis is located off-center on each scissor arm and offset towards the gap between the two guide rails. On each scissor arm, the distance (L1) between the pivot axis and the scissor joint is greater than the distance (L2) between the scissor joint and the coupling joint on the respective scissor arm. In other words, the scissor arms are asymmetrically designed, and the pivot axis is not located on the central longitudinal axis of the respective scissor arm, but offset from it.

[0013] The proposed parallel extension device allows for the scissor arms to be designed with uniform, relatively large material thicknesses, thus achieving high stability. The curvature of the scissor arms at the end facing the guide rail allows the pivot points (coupling joints) to interlock in the non-extended position. This promotes a compact structure for the parallel extension device. Since recesses in the scissor arms are unnecessary, efficient material utilization of the scissor arms can be achieved. Furthermore, this design contributes to a homogeneous, aesthetically pleasing appearance of the scissor arms and the parallel extension device as a whole.

[0014] Specifically, the first scissor arm can be pivotally mounted on a fixed bearing that is immovable relative to the longitudinal direction of the first guide rail, and the second scissor arm can be pivotally mounted on a floating bearing that is slidably guided along the longitudinal direction of the first guide rail.

[0015] Alternatively or additionally, the fourth scissor arm can be pivotally mounted on a fixed bearing that is immovable relative to the longitudinal direction of the second guide rail, and the third scissor arm can be pivotally mounted on a floating bearing that is slidably guided along the longitudinal direction of the second guide rail.

[0016] In a preferred embodiment, the distance (L1) between the pivot axis and the scissor joint on the respective scissor arm can be greater than the distance (L2) between the scissor joint and the coupling joint on the respective scissor arm by a factor of 1.05 to 1.15, preferably by a factor of 1.08 to 1.12, and more preferably by a factor of 1.11. This allows sufficient engagement of the pivot points (coupling joints) in the non-extended position, while the parallel extension device remains sufficiently compact.

[0017] As previously mentioned, the scissor arms can be designed and / or curved at their ends facing the guide rail in such a way that, in the non-extended position, they engage the coupling joints, specifically enclosing them between themselves. This contributes to the parallel extension device having a particularly small footprint in the non-extended position. Specifically, in the non-extended position, the first and fourth scissor arms (each at their end supported by a fixed bearing) can engage the first coupling joint between themselves. The second and third scissor arms (each at their end supported by a floating bearing) can engage the second coupling joint between themselves in the non-extended position.

[0018] Advantageously, the scissor arms can each have a constant material thickness along their central longitudinal axis. This contributes to a stable design. Furthermore, this facilitates the manufacturing of the scissor arms, as they can be produced, for example, by stamping or laser cutting.

[0019] Advantageously, the scissor arms can each be free of lateral recesses (which would weaken the cross-section or width of the scissor arms) relative to the central longitudinal axis. This contributes to good material utilization, as the material cross-section is not weakened by lateral (open-sided) recesses. It is understood that the scissor arms may each have bores for connection to the pivot axis, the scissor joint, or the coupling joint. Such bores are not considered lateral recesses.

[0020] In a preferred embodiment, the fixed bearings can be raised or designed with a height difference compared to the floating bearings, so that a scissor arm pivotally mounted on the fixed bearing is further away from the base of the guide rail (the groove bottom of the C-slot) than a scissor arm pivotally mounted on the floating bearing of this guide rail. This height difference allows scissor arms pivotally mounted on the same guide rail (first or second) to easily pass each other. A bend in the scissor arms (orthogonal to their central longitudinal plane) is therefore unnecessary, which facilitates simple manufacturing and high stability of the scissor arms. The raised design or the height difference by which the fixed bearing is raised can correspond to the thickness (material thickness) of the scissor arm. The guide rails can each be designed as a C-rail.

[0021] As already mentioned, the scissor arms can extend along a central longitudinal plane without any offset (without a bend). This contributes to a compact design of the scissor arms with a preferably uniform material thickness throughout. The machining step for forming the offset can be omitted during the manufacturing process, which simplifies the production of the scissor arms.

[0022] In a preferred embodiment, a projection limiting device can be arranged or formed on one of the guide rails, particularly the first guide rail. This device limits the projection by allowing the movement of the movable bearing along the longitudinal direction of the guide rail towards the fixed bearing to be limited or restricted by means of the projection limiting device. This allows the projected position, i.e., the maximum parallel projection of a leaf relative to the frame of a door or window assembly, to be easily and reliably determined, for example, depending on the mass of the respective leaf. The projection limiting device can have several (spaced-apart) recesses or passages into which a stop element can be inserted, limiting the travel of the movable bearing towards the fixed bearing of this guide rail. The stop element can be designed as a pin or a screw.The recesses or passages can each have an internal thread, especially in the case of a screw as a stop element.

[0023] Advantageously, the curved ends of the scissor arms can be designed and / or arranged such that, in both the closed and extended positions, they do not project beyond the guide rails when viewed from above. This contributes to a compact design of the parallel opening device and facilitates its installation. Thus, the curved ends of the scissor arms (regardless of their position) do not project laterally or transversely beyond the guide rails when viewed from above. Consequently, the guide rails of the parallel opening device can be attached directly to an edge of a sash or frame profile of a door or window assembly. This increases the stability of an installed parallel opening device and contributes to the long-term, precise guidance of a sash relative to the frame.

[0024] The aforementioned problem is also solved by a door or window arrangement with the features of the dependent claim. Regarding the advantages achievable thereby, reference is made to the relevant explanations concerning the parallel opening device.

[0025] The door or window assembly comprises a frame and a sash corresponding to the frame. Furthermore, the door or window assembly has at least one parallel opening device with one or more of the aspects described above. By means of the at least one parallel opening device, the sash is mounted on the frame in such a way that the sash can be moved relative to the frame between a non-opening position (sash is in the plane of the frame) and a parallel-opening position (sash opened parallel to the frame).

[0026] Preferably, the door or window assembly can have two parallel opening devices by means of which the sash is mounted on the frame. One parallel opening device can be attached between a lower sash cross member and a lower frame cross member. Another parallel opening device can be attached between an upper sash cross member and an upper frame cross member. Specifically, the parallel opening device can be attached to the frame with the first guide rail and to the sash with the second guide rail.

[0027] The measures described in connection with the parallel opening device and / or those discussed below can be used to further design the door or window arrangement.

[0028] 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 door or window arrangement in a schematic view; Fig. 2a shows an embodiment of a parallel opening device in the opened position ( Figure 2a ) and not issued position ( Figure 2b ) each in a perspective view; Fig. 3a-c the parallel display device made of Figure 2a and 2b in an exposed position in a top view ( Figure 3a ), a front view ( Figure 3b ) and a side view ( Figure 3c ); and Fig. 4a-c the parallel display device made of Figure 2a and 2b in a non-exposed position in a top view ( Figure 4a ), a front view ( Figure 4b ) and a side view ( Figure 4c ) .

[0029] Figure 1shows a door or window arrangement, which is collectively designated with the reference numeral 200.

[0030] The door or window assembly 200 has a frame 202 and a sash 204 corresponding to the frame 202. In the example, the door or window assembly 200 is installed on a building wall W.

[0031] The frame 202 has a lower frame cross member 206, an upper frame cross member 208 and two vertical frame members 210, 212. The sash 204 has a lower sash cross member 214, an upper sash cross member 216 and two vertical sash members 218, 220, which in the example enclose a glass element 222.

[0032] The door or window assembly 200 in this example has two parallel opening devices 10, which are described in more detail below. In this case, one parallel opening device 10 is attached between the lower sash cross member 214 and the lower frame cross member 206. Another parallel opening device 10 is attached between the upper sash cross member 216 and the upper frame cross member 208. As explained above, each of the parallel opening devices 10 can be attached to the frame 202 with a first guide rail and to the sash 204 with a second guide rail.

[0033] Depending on the mass of the respective sash 204, additional opening devices, in particular in the form of scissor hinges, can optionally be used, each installed between a vertical sash mullion 218, 220 and a vertical frame mullion 210, 212 (at least one additional opening device between the vertical frame mullion 210 and the vertical sash mullion 218 and at least one additional opening device between the vertical frame mullion 212 and the vertical sash mullion 220). These are known to those skilled in the art and are therefore not shown or described in detail.

[0034] The following refers to the Figures 2a to 4c The parallel display device 10 is explained in more detail.

[0035] As already indicated, the parallel opening device 10 serves to open a wing 204 in parallel to a frame 202.

[0036] The parallel display device 10 has a first scissor arm 12 and a second scissor arm 14. These form a first pair of scissor arms. The first scissor arm 12 and the second scissor arm 14 are pivotally connected to each other by means of a first scissor joint 16 and are each pivotally mounted at one end on a first guide rail 18.

[0037] Furthermore, the parallel display device 10 has a third scissor arm 20 and a fourth scissor arm 22. These form a second pair of scissor arms. The third scissor arm 20 and the fourth scissor arm 22 are pivotally connected to each other by means of a second scissor joint 24 and are each pivotally mounted at one end on a second guide rail 26.

[0038] The scissor arms 12, 14, 20, 22 each extend along a central longitudinal axis M (for better clarity in Figure 3a(illustrated only on the second scissor arm 14). The first scissor joint 16 and the second scissor joint 24 are each arranged in a middle section of the scissor arms 12, 14, 20, 22, but not exactly in the middle along the central longitudinal axis M, as explained below.

[0039] The second scissor arm 14 is pivotally connected to the third scissor arm 20 at its end furthest from the first guide rail 18 via a first coupling joint 30. The first coupling joint 30 is located at the end of the third scissor arm 20 that is furthest from the second guide rail 26.

[0040] The first scissor arm 12 is pivotally connected to the fourth scissor arm 22 at its end furthest from the first guide rail 18 via a second coupling joint 32. The second coupling joint 32 is located at the end of the fourth scissor arm 22 that is furthest from the second guide rail 26.

[0041] As a result of the coupling of the two guide rails 18, 26 by means of the scissor arms 12, 14, 20, 22, the guide rails 18, 26 are positioned between a non-extended position, in which the guide rails are only slightly spaced apart from each other or are in contact with each other (cf. Figure 2b and 4a-4c ), and can be moved to an extended position in which the guide rails 18, 26 for extending the wing 204 are further apart than in the non-extended position (cf. Figure 2a and 3a-3c ).

[0042] The scissor arms 12, 14, 20, 22 are each curved at the end where they are pivotally mounted on one of the guide rails 18, 26 about a pivot axis S, in the direction of a gap Z between the two guide rails 18, 26. The pivot axis S is arranged on each scissor arm 12, 14, 20, 22 off to the side of the central longitudinal axis M of that scissor arm and offset in the direction of the gap Z between the two guide rails 18, 26 (see, for example, Figure 1). Figure 3a ).

[0043] On scissor arms 12, 14, 20, 22, the distance L1 between the pivot axis S and the scissor joint 16, 24 on the respective scissor arm is greater than the distance L2 between the scissor joint 16, 24 and the coupling joint 30, 32 on the respective scissor arm. In other words, the scissor arms 12, 14, 20, 22 are each asymmetrically designed, and the pivot axis S is not located on the central longitudinal axis M of the respective scissor arm, but offset from it. In this example, the distance L1 between the pivot axis S and the scissor joint 16, 24 on the respective scissor arm is greater by a factor of 1.11 than the distance L2 between the scissor joint 16, 24 and the coupling joint 30, 32 on the respective scissor arm.

[0044] The first scissor arm 12 is pivotably mounted on the first guide rail 18 at a fixed bearing 40 that is fixed relative to the longitudinal direction R1 of the first guide rail 18. The second scissor arm 14 is pivotably mounted on the first guide rail 18 at a floating bearing 42 that is slidably guided along the longitudinal direction R1 of the first guide rail 18. The floating bearing 42 pivotally supports the second scissor arm 14 about the pivot axis S and can be displaced along the longitudinal direction R1 of the first guide rail 18.

[0045] The fourth scissor arm 22 is pivotably mounted on the second guide rail 26 at a fixed bearing 44 that is fixed relative to the longitudinal direction R2 of the second guide rail 26. The third scissor arm 20 is pivotably mounted on the second guide rail 26 at a floating bearing 46 that is slidably guided along the longitudinal direction R2 of the second guide rail 26. The floating bearing 46 pivotally supports the third scissor arm 20 about the pivot axis S and can be displaced along the second guide rail 26 along the longitudinal direction R2.

[0046] As already indicated, the scissor arms 12, 14, 20, 22 are each designed and / or curved at their end facing the guide rail 18, 26 such that in the non-extended position they each encompass the coupling joints 30, 32 and, in the example, enclose them between themselves (cf. Figure 4aSpecifically, in the non-extended position, the first scissor arm 12 and the fourth scissor arm 22 (each at the end supported by fixed bearings 40, 44) engage the first coupling joint 30 between them. In the non-extended position, the second scissor arm 14 and the third scissor arm 20 (each at the end supported by sliding bearings 42, 46) engage the second coupling joint 32 between them.

[0047] The scissor arms 12, 14, 20, 22 each have a constant material thickness along their central longitudinal axis M (see figure). Figure 2a , 3b , 3c , 4b and 4c Furthermore, the scissor arms 12, 14, 20, 22 in the example are each free of lateral recesses (weakening the cross-section or width of the scissor arms 12, 14, 20, 22) with respect to the central longitudinal axis M.

[0048] The fixed bearings 40, 44 are raised or designed with a height difference compared to the floating bearings 42, 46, such that a scissor arm 12, 22 pivotally mounted on the fixed bearing 40, 44 is further away from the base of the rail 48, 50 of the respective guide rail 18, 26 than a scissor arm 14, 20 pivotally mounted on the floating bearing 42, 46 of this guide rail 18, 26. The height difference can be achieved by appropriately designing the fixed bearings 40, 44 or by using a suitable intermediate piece 49. The thickness of the intermediate piece 49 (extent along the pivot axis S) can correspond to the thickness (material thickness) of the scissor arms. In this example, the guide rails 18, 26 are each designed as a C-rail. As already indicated, the scissor arms 12, 14, 20, 22 each extend without any offset (without offset) along a central longitudinal plane (not shown).

[0049] In the example, an extension limiting device 60 is arranged on the first guide rail 18 (arrangement on the rail base 48 or in the C-rail), which limits an extension by limiting or restricting the movement of the loose bearing 42 along the longitudinal extension direction R1 of the guide rail 18 towards the fixed bearing 40 by means of the extension limiting device 60.

[0050] The extension limiting device 60 has several spaced-apart recesses 62 into which a stop element 64 can be inserted, which limits the travel path of the floating bearing 42 towards the fixed bearing 40 of this guide rail 18. The stop element 64 and the recesses or passages 62 can be configured as described above.

Claims

1. Parallel opening device (10) for opening a sash (204) of a door or window assembly (200) parallel to a frame (202), comprising a first scissor arm (12) and a second scissor arm (14) which are pivotally connected to each other by means of a first scissor joint (16) and which are each pivotally mounted at one end on a first guide rail (18), a third scissor arm (20) and a fourth scissor arm (22) which are pivotally connected to each other by means of a second scissor joint (24) and which are each pivotally mounted at one end on a second guide rail (26), wherein the scissor arms (12, 14, 20, 22) each extend along a central longitudinal axis (M), and wherein the second scissor arm (14) is pivotally connected to the third scissor arm (20) via a first coupling joint (30) and the first scissor arm (12) is pivotally connected to a second guide rail (26) via a second coupling joint (32) is articulated with the fourth scissor arm (22),so that the guide rails (18, 26) can be moved between a non-extended position, in which the guide rails (18, 26) are only slightly spaced apart from each other or are in contact with each other, and an extended position, in which the guide rails (18, 26) are further apart from each other than in the non-extended position, characterized by the fact thatThe scissor arms (12, 14, 20, 22) are each curved at the end at which they are pivotally mounted on one of the guide rails (18, 26) about a pivot axis (S), in the direction of a gap (Z) between the two guide rails (18, 26), wherein the pivot axis (S) on the respective scissor arm (12, 14, 20, 22) is arranged away from the central longitudinal axis (M) of that respective scissor arm (12, 14, 20, 22) and is offset in the direction of the gap (Z) between the two guide rails (18, 26), wherein on the scissor arms (12, 14, 20, 22) the distance (L1) between the pivot axis (S) and the scissor joint (16, 24) on the respective scissor arm (12, 14, 20, 22) is greater than the distance (L2) between the scissor joint (16, 24) and the coupling joint (30, 32) on the respective scissor arm (12, 14, 20, 22).

2. Parallel display device (10) according to claim 1, characterized by the fact thatthe first scissor arm (12) is pivotably mounted on a fixed bearing (40) which is non-displaceable relative to the longitudinal direction (R1) of the first guide rail (18) and the second scissor arm (14) is pivotably mounted on a floating bearing (42) which is slidably guided along the longitudinal direction (R1) of the first guide rail (18) and / or that the fourth scissor arm (22) is pivotably mounted on a fixed bearing (44) which is non-displaceable relative to the longitudinal direction (R2) of the second guide rail (26) and the third scissor arm (20) is pivotably mounted on a floating bearing (46) which is slidably guided along the longitudinal direction (R2) of the second guide rail (26).

3. Parallel display device (10) according to claim 1 or 2, characterized by the fact thatthe distance (L1) between the pivot axis (S) and the scissor joint (16, 24) on the respective scissor arm (12, 14, 20, 22) is greater by a factor of 1.05 to 1.15, preferably by a factor of 1.05 to 1.15, than the distance (L2) between the scissor joint (16, 24) and the coupling joint (30, 32) on the respective scissor arm (12, 14, 20, 22).

4. Parallel display device (10) according to one of the preceding claims, characterized by the fact that the scissor arms (12, 14, 20, 22) are designed and / or curved in such a way that, in the non-extended position, they each encompass the coupling joints (30, 32), in particular enclosing them between each other.

5. Parallel display device (10) according to one of the preceding claims, characterized by the fact that the scissor arms (12, 14, 20, 22) each have a constant material thickness along their central longitudinal axis (M).

6. Parallel display device (10) according to one of the preceding claims, characterized by the fact thatthe scissor arms (12, 14, 20, 22) are each free of lateral recesses with respect to the central longitudinal axis (M).

7. Parallel display device (10) according to one of claims 2 to 6, characterized by the fact that The fixed bearings (40, 44) are designed to be raised compared to the floating bearings (42, 46), so that a scissor arm (12, 22) pivotally mounted on the fixed bearing (40, 44) is further away from the rail base (48, 50) of the guide rail (18, 26) than a scissor arm (14, 20) pivotally mounted on the floating bearing (42, 46) of this guide rail (18, 26).

8. Parallel display device (10) according to one of the preceding claims, characterized by the fact that the scissor arms (12, 22) each extend without any bending along a central longitudinal plane.

9. Parallel display device (10) according to one of claims 2 to 8, characterized by the fact thaton one of the guide rails (18, 26), in particular the first guide rail (18), an extension limiting device (60) is arranged or designed which limits an extension by limiting or restricting the movement of the loose bearing (42) along the longitudinal extension direction (R1) of the guide rail (18) towards the fixed bearing (40) by means of the extension limiting device (60).

10. Parallel display device (10) according to one of the preceding claims, characterized by the fact that the curved ends of the scissor arms (12, 14, 20, 22) are designed and / or arranged such that, in the non-extended position and / or in the extended position, they do not extend beyond the guide rails (18, 26) in a top view transverse to the longitudinal extension direction (R1, R2) of the guide rails (18, 26).

11. Door or window arrangement (200), comprising a frame (202) and a sash (204) corresponding to the frame (202) and at least one parallel opening device (10) according to one of the preceding claims.

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