Device for assisting the movement of a wing of a door or window into at least one end position

Abstract

Device (16) for assisting the movement of a wing (12) of a door (10) or a window into at least one end position, comprising a housing (20) in which a transmission (24) is provided which converts a rotary movement of an arm (18) about an axis of rotation (30) into a linear movement of a drive element, wherein a spring element (43) is further provided which is supported at least indirectly at one end on the housing (20), characterized in that the drive element is designed as a connecting rod (28) and the spring element (43) is supported at the other end on a linear motion device (40) which can be coupled to the connecting rod (28) via a coupling element (38, 68), wherein the coupling element (38, 68) is pivotably arranged on the linear motion device (40) and the coupling element (38, 68) couples or decouples the connecting rod (28) by its pivoting movement. can be.

Description

Background of the invention

[0001] The invention relates to a device for supporting the movement of a wing of a door or window into at least one end position.

[0002] Door seals are generally designed to cushion the door leaf when closing, but also to seal the door. Cushioning the door leaf prevents it from slamming shut and is achieved through the seal geometry, seal hardness, and seal wall thickness. However, if these parameters are not correctly selected, the door may still slam shut, or the cushioning may be excessive, compromising a secure closure. Efforts are already underway to separate the sealing function from the functions of cushioning the door leaf and ensuring a secure closure.

[0003] From DE 10 2013 210 514 B4, a retracting device for a door or window leaf is known, comprising a housing, a piston arranged in a receiving chamber of the housing and provided with teeth, wherein a pinion of a drive shaft meshes in the teeth, to which an actuating arm is non-rotatably arranged, and wherein at least one spring arranged in the receiving chamber can be coupled to the piston. A disadvantage of this retracting device is that the pinion projects into the receiving chamber of the housing and meshes with the piston's teeth there. The housing is filled with hydraulic fluid. The pinion of the shaft is therefore located in the hydraulic fluid. Because the shaft projects into the housing, leaks and loss of hydraulic fluid can occur at this point.

[0004] DE 195 26 061 A1 discloses a door closer comprising a piston system with two counter-rotating pistons, wherein each piston is assigned a toothless transmission device. Object of the invention

[0005] The object of the invention is to provide a device for supporting the movement of a wing of a door or window into at least one end position, which is simple in design and functions reliably. Description of the invention

[0006] This problem is solved according to the invention by a device for supporting the movement of a wing of a door or a window into at least one end position, with the features of claim 1.

[0007] In the device according to the invention, an arm is coupled to a connecting rod via a gearbox. The connecting rod is not located in a space filled with hydraulic fluid. Therefore, leaks and impairments to the device's functionality are prevented. In particular, the connecting rod can be guided externally on one side of the housing. The gearbox can have a pinion that is rotationally fixed to the arm and meshes with the connecting rod. For this purpose, the connecting rod can have teeth or recesses, in particular openings, adapted to the pinion.

[0008] The device according to the invention not only makes it possible to assist the closing movement of a sash, in particular to pull a sash into a closed position by means of the action of the spring element. It is also possible with the device according to the invention to assist the sash in assuming an open position when the installation position of the device is changed or when a second spring element and a second coupling element are provided.

[0009] The coupling element is pivotally mounted on the linear motion device. By pivoting the coupling element, it can be coupled to or decoupled from the drive rod. The ability to decouple it from the drive rod allows for free movement, enabling the arm, and thus the wing, to move freely in an intermediate position without the influence of the spring element.

[0010] The arm can be coupled to a sliding rail at one end. If the device according to the invention is arranged on a sash, the other end of the arm can be guided in a sliding rail on the door jamb or a fixed frame of the window. However, it is also conceivable to provide the device on a fixed frame or jamb and, accordingly, to guide the other end of the arm slidingly along the sash.

[0011] Particular advantages arise when the coupling element is guided by a guide in the housing. This guide can be designed as a cam track in or on the housing. This ensures that the coupling element executes defined movements relative to the housing and relative to the connecting rod. The guide can have two guide sections oriented at an angle to each other. These guide sections can be straight and connected by a curved section. In particular, one guide section can be aligned parallel to the longitudinal direction of the housing, and another guide section can be oriented at an angle to it, especially perpendicularly. A guide element, for example, a pin, of the coupling element can be inserted into the guide.If the guide element enters the section of the guide that is oriented at an angle to the longitudinal direction, this can cause the coupling element to tilt or pivot, thus decoupling it from the connecting rod. Conversely, a movement in the opposite direction can result in the coupling element being coupled to the connecting rod in this way.

[0012] The coupling element can have a control section that can be actuated by the connecting rod or by a driver arranged on the connecting rod, the driver being considered part of the connecting rod. The driver can be formed on the connecting rod or integrally with it.

[0013] If, therefore, the driver strikes the control section due to movement of the drive rod, this causes the coupling element to move in the direction of the driver's movement. This allows the coupling element to move along the guide and pivot, thus engaging with the driver. For this purpose, the coupling element can have an engagement section that engages with the driver or the drive rod. The coupling element and the driver can thus be positively connected. Other positive-locking or friction-locking connections between the driver and coupling element are also conceivable. To achieve a freewheel, the connection between the coupling element and the driver or drive rod should be detachable.

[0014] The drive element can engage with the coupling element, particularly with a projection. This allows for a positive-locking connection.

[0015] Particular advantages arise when a damper is incorporated. A damper ensures that the sash reaches its end position smoothly, preventing it from slamming shut or striking a jamb. The linear motion device can include a connecting piece against which the damper is supported and on which the coupling element is pivotably mounted. Specifically, the connecting piece can engage the end of the damper furthest from the gearbox. A section of the connecting piece can run parallel to the damper. The coupling element and the section against which the damper is supported can be located at opposite ends of the connecting piece.

[0016] The spring element can be supported, at least indirectly, by a piston of the damper against the housing. Alternatively, the spring element can be located inside a cylinder of the damper and be supported internally by the cylinder. The spring element thus tends to move the cylinder and piston of the damper apart. Due to the coupling of the linear motion device to the connecting rod and thus to the arm via the coupling element, the spring element can cause the wing to move into one of its end positions. Because the spring element is coupled to the damper, either directly or indirectly, the movement of the piston is damped, so that the wing is not abruptly moved into one of its end positions due to the spring action, but rather this movement occurs in a damped manner.

[0017] Particular advantages arise when an adjustment device is provided for setting the preload of the spring element. This adjustment device can be adjusted discretely or continuously relative to the housing. A piston rod of the piston can be supported against the adjustment device and thus indirectly against the housing. The piston rod can be connected to the adjustment device. In particular, the adjustment device can include a piston support that is adjustable longitudinally along the housing.

[0018] If the device is symmetrically constructed with respect to a central plane perpendicular to the longitudinal direction of the housing, both an opening movement and a closing movement of the wing can be supported and dampened simultaneously.

[0019] The invention also encompasses a window or door with a device according to the invention. The device according to the invention can be arranged on the rotatable sash or on the fixed part of the window or door, i.e., on the frame or jamb. The device can be arranged in a recess or on the rebate surface.

[0020] Further advantages of the invention will become apparent from the description and the drawing. Likewise, the features mentioned above and those described in more detail below can each be used individually or in any combination according to the invention. The embodiments shown and described are not to be understood as an exhaustive list, but rather serve as examples for illustrating the invention. Detailed description of the invention and drawing Fig. Figure 1 shows a door with a device according to the invention. Fig. Figure 2 shows a perspective view of the device according to the invention. Fig. Figure 3 shows a side view of the device according to the invention in a position corresponding to an open position of the wing with the housing partially hidden. Fig. 4 shows one of the Fig. 3. Corresponding representation with an intermediate position of the arm. Fig. 5 shows one of the Fig. 3. Corresponding representation with an arm position that corresponds to a closed position of the door.

[0021] The Fig. Figure 1 shows a door 10 with a leaf 12, which is rotatably arranged relative to a frame 14 via hinges (not shown). A device 16 for assisting the movement of the leaf 12 into an end position is provided at the top of the leaf 12. The device 16 is coupled to the frame 14 via an arm 18, the free end of which is guided in a slide rail on the frame 14.

[0022] Fig. Figure 2 shows a perspective view of the device 16. The device 16 comprises a housing 20 on which the arm 18 is rotatably mounted. It can now be seen that a T-nut 22 is provided at the free end of the arm 18, which can slide in the aforementioned guide rail.

[0023] The arm 18 is coupled to a gearbox 24, the gearbox 24 comprising a pinion or gear 26 which is rotationally fixed to the arm 18 and interacts with, in particular meshes with, a connecting rod 28. Rotation of the arm 18 causes the gear 26 to rotate about an axis of rotation 30. This rotational movement is converted into a linear movement of the connecting rod 28 parallel to the longitudinal direction 32 of the housing 20 due to the coupling of the gear 26 with the connecting rod 28. The connecting rod 28 is arranged on an outer surface of the housing 20 and guided by the housing 20.

[0024] The connecting rod 28 is connected to drivers 34, 36, in particular by positive locking and / or friction locking. It is also conceivable that the drivers 34, 36 are formed integrally with the connecting rod 28, in particular that they are an integral part of the connecting rod 28.

[0025] The Fig. Figure 3 shows a side view of the representation of the Fig. 2 with partially hidden housing 20. It can be seen that the device 16 is essentially symmetrical with respect to a central plane in which the axis of rotation 30 lies and which is oriented perpendicular to the longitudinal direction 32.

[0026] The position shown corresponds to an open position of the wing 12 with the arm 18 fully pivoted into the open position. The driver 34 of the connecting rod 28 is coupled to a linear motion device 40 via a coupling element 38. The linear motion device 40 comprises a damper 42 in which a spring element 43 is arranged. In particular, the spring element 43 is arranged in a cylinder 44 of the damper 42. The cylinder 44 of the damper 42 is coupled to the coupling element 38 via a connecting piece 46. The cylinder 44 of the damper 42 is supported by the connecting piece 46. The spring element 43 is supported both in the cylinder 44 and on the piston 48. The piston 48 is supported via its piston rod 50 on a piston support 52, which is fixedly arranged in the housing 20. The spring element 43 is therefore indirectly supported by the housing 20.

[0027] In the position shown, the spring element 43 has relaxed, thereby pulling the coupling element 38 and the coupled driver 34 to the left (the connecting rod is concealed by the housing 20 and therefore not visible). This pulled the arm 18 completely into the position shown, corresponding to the open position of the wing 12. This movement was dampened, however, because the movement of the piston 48 relative to the cylinder 44 was damped. The spring 43 could also be located outside the damper, for example, on the piston rod 50 or arranged parallel to it, supported by the piston support 52 and the cylinder 44. The spring 43 simply needs to be able to move the wing into an end position, regardless of its location.

[0028] When the arm 18 is pivoted, the connecting rod 28 is driven to the right, with the result that the driver 34 arranged on the connecting rod 28, via the coupling element 38 and the connecting piece 46, also moves the cylinder 44 to the right, thereby compressing or pre-tensioning the spring element 43. The coupling element 38 engages with a control section 54 and an engagement section 56 in corresponding recesses of the driver 34, so that the coupling element 38 is positively coupled to the driver 34. In other words, the coupling element 38, with a control section 54 and an engagement section 56, engages a corresponding projection of the driver 34. This is equivalent to the driver 34 engaging with the coupling element 38, in particular with a projection. Therefore, when the coupling element 38 is moved to the right, a guide element 58 arranged on it slides along a guide 60 of the housing 20.

[0029] The guide 60 initially has a horizontally oriented guide section 62. When the guide element 58 enters the angled guide section 64, the coupling element 38 pivots about the pivot axis 66. This decouples the coupling element 38 from the driver 34. The spring element 43 remains in its pre-tensioned position. The connecting rod 28 with the driver 34 is now decoupled from the linear motion device. Thus, a freewheel is achieved. The arm 18 is freely movable.

[0030] This situation is in the Fig. Figure 4 illustrates this. In particular, it can be seen that the coupling element 68, which serves to couple with the driver 36, is also pivoted downwards, so that the spring element in the damper 70 (not shown here) is also pre-tensioned. If the arm 18 is pivoted further, the connecting rod 28 is moved further to the right, so that the driver 36 initially abuts the control section 72. This causes the coupling element 68 to pivot due to the guide on the housing 20 as the connecting rod 28 moves further to the right, and its engagement section 74 engages with the driver 36. When the coupling element 68 is now pivoted upwards and coupled with the driver 36, the spring element in the damper 70 is simultaneously able to relax.This causes the cylinder 76 to be moved to the right by the action of the spring element, thereby moving the driver 36 to the right and supporting a closing movement of the wing, as the arm 18 moves into the Fig. The position shown in section 5 is forced.

[0031] The piston counter bearings 52, 78 are adjustable in the housing 20. This allows the preload of the spring elements 43 in the cylinders 44, 76 to be adjusted. This provides an adjustment device for the preload of the spring element 43.

Claims

[1] Device (16) for assisting the movement of a wing (12) of a door (10) or a window into at least one end position, comprising a housing (20) in which a transmission (24) is provided which converts a rotary movement of an arm (18) about an axis of rotation (30) into a linear movement of a drive means, further comprising a spring element (43) which is supported at least indirectly at one end on the housing (20), characterized by , that the drive means is designed as a drive rod (28) and the spring element (43) is supported at the other end on a linear motion device (40) which can be coupled to the drive rod (28) via a coupling element (38, 68), wherein the coupling element (38, 68) is pivotably arranged on the linear motion device (40) and can be coupled to or decoupled from the drive rod (28) by the pivoting movement of the coupling element (38, 68). [2] Device according to claim 1, characterized by, that the coupling element (38, 68) is guided on a guide (60) of the housing (20). [3] Device according to claim 2, characterized by , that the guide (60) has two guide sections (62, 64) aligned at an angle to each other. [4] Device according to any one of the preceding claims, characterized by , that the coupling element (38, 68) has a control section (54, 72) which can be controlled by the connecting rod (28) or a driver (34, 36) arranged on the connecting rod (28). [5] Device according to any one of the preceding claims, characterized by , that the coupling element (38, 68) has an engagement section (56, 74). [6] Device according to claim 4, characterized by , that the driver (34, 36) engages in the coupling element (38, 68). [7] Device according to any one of the preceding claims, characterized by , that a damper (42, 70) is provided. [8] Device according to claim 7, characterized by, that the linear motion device (40) comprises a connecting piece (46) on which the damper (42) is supported and on which the coupling element (38, 68) is pivotably arranged [9] Device according to one of the preceding claims 7 or 8, characterized by , that the spring element (43) is supported at least indirectly on the housing (20) via a piston (48) of the damper (42, 70). [10] Device according to any one of the preceding claims 7 to 9, characterized by , that the spring element (43) is arranged in a cylinder (44) of the damper (42, 70) and is supported on the cylinder (44). [11] Device according to any one of the preceding claims, characterized by , that an adjustment device is provided for adjusting the preload of the spring element (43). [12] Device according to claim 11, characterized by , that the adjusting device comprises a piston counter bearing (52, 78) adjustable in the longitudinal direction (32) of the housing (20). [13] Device according to any one of the preceding claims, characterized by , that it is symmetrically constructed with respect to a median plane perpendicular to the longitudinal direction (32) of the housing (20). [14] Window or door with a device according to any of the preceding claims.

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