Door

Abstract

The present invention relates to a door, in particular a roller door, having a door leaf which is at least partially configured as a web-like curtain made of flexible material and which is movable along a movement path between an open position, in which it at least partially opens a wall opening and possibly forms a multi-layer winding above the wall opening, and a closed position, in which it at least partially closes the wall opening, wherein the web-like curtain is assigned a stabilizing device which extends transversely, in particular approximately perpendicularly, to the movement path and which, at least in the closed position, counteracts deformation of the curtain in a load direction extending perpendicularly to a closing plane defined by the movement path and the stabilizing device, wherein the web-like curtain has at least two curtain segments which follow one another in the direction of the movement path and which are releasably connected to one another along at least one predetermined separating line, or a predetermined separating region, extending preferably approximately perpendicular to the movement path in the closing plane, in such a way that the mutually facing edges of the curtain segments that extend transversely, in particular perpendicularly, to the movement direction remain deformable.

Description

[0001] The invention relates to a door, in particular a roller door, with a door leaf which is movable along a movement path between an open position in which it at least partially exposes a wall opening and optionally forms a multi-layer roll above the wall opening, and a closed position in which it at least partially closes the wall opening, and which is designed at least in sections as a web-shaped curtain made of flexible material, wherein the web-shaped curtain is assigned a stabilizing device which extends transversely, in particular approximately perpendicularly, to the movement path and which, at least in the closed position, counteracts a deformation of the curtain in a load direction running perpendicular to a closing plane spanned by the movement path and the stabilizing device.

[0002] Roller doors of this type are used primarily for closing hall entrances. The closing element, designed as a door leaf, can be wound onto a winding shaft located above the hall entrance during the transition from the closed to the open position. This ensures space-saving storage of the door leaf in the open position. For this purpose, the door leaf can be designed in the form of a so-called slatted curtain with a plurality of articulated slats running perpendicular to the direction of movement of the closing element.In cases where a burglar-proof closure of the entrance is less important than a quick opening and closing movement to open and close the entrance, the closing element can at least partially consist of a web-shaped curtain, for example made of PVC, which can be formed from several curtain segments divided in the direction of the web and connected to one another.

[0003] High-speed roller doors with a closing element or door leaf in the form of a track-like curtain, possibly composed of several interconnected curtain segments, must meet various, sometimes conflicting, requirements. Firstly, the roller doors must exhibit a certain stability transversely to the direction of movement or transversely to the flat extension of the curtain in the closed position in order to withstand external influences, such as wind loads that could cause the curtain to bulge. Furthermore, it has proven advantageous if the individual curtain segments forming the curtain are detachably connected to one another, as this allows for easy disassembly of the curtain and replacement of individual curtain segments in the event of damage, repair, and / or maintenance. Such roller doors are described, for example, in the international publication WO 2018 / 219512A1.The individual curtain segments are releasably attached to one another via a connecting device consisting of stabilizing profiles designed as extruded aluminum profiles and piping that engages with the extruded aluminum profiles. While the required stability, particularly against wind loads, and easy disassembly are achieved, the extruded aluminum profiles result in a reduced running speed of the roller shutter and an increased noise level when winding and unwinding the curtain. It has been found that the extruded aluminum profiles strike the winding shaft when winding onto and unwinding from the winding shaft, causing the door to run irregularly. Doors with curtain segments connected to one another via connecting devices formed from metal profiles are also disclosed in DE 10 2019 126 898 A1, US 2014 / 190709 A1, and CN2480527Y.

[0004] The state of the art also includes roller shutters in which the curtain segments are permanently attached to one another, in particular by welding, or in which the curtain is made from a single piece. With such roller shutters, the necessary stability against external influences, such as wind loads, can be achieved by providing the curtain with stabilizers, such as flat spring steel leaves. Roller shutters constructed in this way are characterized by excellent running characteristics and speeds, without the occurrence of annoying winding noises. The disadvantage of such roller shutters is, among other things, that in the event of damage, repair and / or maintenance, even in the case of minor damage to the one-piece curtain or damage to only individual curtain segments, the entire curtain usually has to be replaced, which leads to a high level of labor and expense. Dismantling or replacing individual curtain segments is not possible.

[0005] It has been found that, despite the high running speeds of roller shutters, so-called collision damage can occur if a vehicle, such as a forklift truck, collides with the curtain during the opening movement of the curtain or in the closed position, damaging it. Typically, the curtain is damaged at a lower edge in the closed position. Furthermore, impact with the curtain, for example, by a vehicle, can lead to cracks in the curtain, which is made of a flexible material, and / or damage to the guide elements used to guide the curtain's movement.

[0006] In view of these described problems in the prior art, WO 2004 / 088080 A1 proposes that the stabilizing element arranged at the lower edge of the closing element in the closed position be designed to be elastically deformable so that it can convert at least part of the impact energy into deformation energy. Furthermore, to increase the operational reliability of the doors, at least one guide device cooperating with the guide element is arranged on at least one lateral edge of the closing element. This guide device is designed to detach from the guide element upon impact of a vehicle on the closing element in order to prevent damage to the curtain, the guide element, or the guide device.To further ensure reliable guidance of the movement of the closing element, an inlet arrangement can be arranged on the upper edge of the guide element, with which the guide member can be automatically inserted into the guide element during a closing movement of the closing element. According to WO 2004 / 088080 A1, the inlet arrangement can be combined with a pretensioning device, with which the closing element or the stabilizing element is urged in opposite directions and transverse to the direction of movement of the closing element. This can center the lower edge of the closing element to ensure reliable insertion of the lower edge of the closing element into the guide elements, even at high closing speeds.

[0007] Both the elastically deformable stabilizing elements at the lower edge of the locking element and the guide link inlet arrangements equipped with pretensioning devices reduce the damage caused by vehicle impacts on the locking elements. Nevertheless, collisions with vehicles continue to result in unacceptable damage to the locking elements and / or guide elements, particularly when the locking elements are formed from a curtain made of an elastically flexible material. On the one hand, neither the flexibility of the stabilizing element nor the detachable connection between the locking element or guide device and the guide element, nor their reliable insertion into one another, are sufficient to rule out damage to the locking element and / or guide elements.On the other hand, the state-of-the-art gates have not yet been able to solve the problem that in the event of damage to one-piece curtains or curtains made up of inseparably attached curtain segments, the entire curtain always has to be replaced.

[0008] In view of these problems in the prior art, the object of the invention is to improve a generic door, in particular to provide a door that enables high running speed and wind stability while ensuring easy repair and maintenance.

[0009] The problem is solved by the subject matter of the independent claim.

[0010] The web-shaped curtain is assigned a stabilizing device extending transversely, in particular approximately perpendicularly, to the movement path, which, at least in the closed position, counteracts deformation of the curtain in a load direction running perpendicular to a closing plane spanned by the movement path and the stabilizing device. Typically, the stabilizing device can be rigid and / or made of aluminum or metal. Constructing the door leaf, at least in sections, from flexible material enables a reduction in space requirements because the material adapts to the coil to be formed even in the open position, thus enabling a small spiral diameter in the open position. At the same time, the stabilizing device creates a robust door leaf.In this context, it is possible for the door leaf to be guided along its path of movement using a guide arrangement and / or hinge arrangement coupled to the stabilizing device, as described in WO 2018 / 219512 A1, the content of which is incorporated herein by reference in its entirety. Commercially available, preferably transparent or colored, PVC and / or polycarbonate can be used as the flexible or yielding material for producing door leaves according to the invention. The thickness of the plastic sheet allows the door to be adapted to corresponding requirements or circumstances. The flexibility or flexibility ensures a small winding radius for space-saving accommodation of the curtain in the closed position.Polycarbonate, in particular, has proven to be a material with excellent properties for use in the doors according to the invention. The material exhibits high elasticity with sufficient flexural rigidity to follow the winding contour even at large widths. The material also has other positive properties, such as high impact resistance.

[0011] According to the invention, the web-shaped curtain has at least two curtain segments that follow one another in the direction of the movement path and that are detachably connected to one another along at least one predetermined separation line that extends in the closing plane, preferably approximately perpendicular to the movement path, in such a way that the mutually facing edges of the curtain segments remain deformable. Detachable in the sense of the present invention is to be understood as meaning that the connection of the curtain segments can be released or separated, in particular manually, without causing damage to components of the door, in particular to the connected curtain segments. The predetermined separation line can be an imaginary axis in the region of the fastening zone between the two curtain segments. For example, the predetermined separation line can be arranged with respect to the movement path, in particular centrally, between the mutually facing edges of the track segments to be connected.The term "predetermined separation line" used in this application encompasses a predetermined separation area which can have an extension of the order of magnitude of a multiple of the thickness of the curtain segments both in the direction of the movement path and in a direction perpendicular to the closing plane.

[0012] Thus, the conflict of interest underlying the present invention, namely high running speed and high wind stability on the one hand, and simple repair and maintenance options on the other, can be resolved. Because the facing edges of the curtain segments remain deformable, they are flexible enough to withstand the forces exerted during a vehicle impact, reducing the risk of damage to the curtain. The detachable connection of the curtain segments can be designed without rigid fastening or connecting profiles. A key development idea lies in the functional separation of the stabilization of the curtain, which is created by the stabilization device, and the fastening of the curtain segments to one another, which is achieved by the detachable connection. If the curtain is damaged, it is no longer necessary to replace the entire curtain.It is possible to replace individual curtain segments in a simple, cost-effective and easy-to-install manner by loosening the connection between the curtain segments.

[0013] In an exemplary embodiment, a curtain segment forming the lower edge of the curtain is connected to a curtain segment trailing in the closing movement. Furthermore, a stabilizing device can be arranged at the lower edge of the curtain segment forming the lower edge of the curtain. The stabilizing device can be designed according to WO 2004 / 088080 A1, the content of which is incorporated herein by reference.

[0014] According to the invention, the door comprises a connecting device that is at least partially deformable, in particular elastically deformable, for detachably connecting the mutually facing edges of the curtain segments. In particular, because the connecting device does not necessarily have to contribute to increasing stability, it can be designed to be elastically deformable and flexible, in contrast to the rigid stabilizing device usually made of aluminum or metal. The connecting device can extend across the entire width of the curtain oriented transversely to the movement path and can fasten the curtain segments to be connected to one another across its entire width.The elasticity of the connecting device has the advantage that after deformation, for example as a result of a collision with a forklift truck, the connecting device can return to its original shape, so that the curtain can continue to close the wall opening cleanly and can also be moved reliably along the path of movement, in particular can be wound up into a coil in the open position. According to the invention, the connecting device consists exclusively of an elastically deformable material, in particular an elastomer material and / or plastic. Suitable materials include PVC, in particular rigid PVC, PE, EPDM, SBR and silicone. The intended separation line or the intended separation area within the meaning of this description and the claims is formed by the transitions between the connecting device and the edges of the curtain segments.

[0015] In a further exemplary embodiment of the door according to the invention, the connecting device is designed such that a curtain segment forming the lower edge of the curtain and another curtain segment can be or are each detachably fastened thereto. Because the connecting device is detachably connectable to both curtain segments to be connected, it is not only possible to easily replace the curtain segments in the event of damage and / or maintenance, but also to replace the connecting device itself with little assembly effort if it needs to be replaced. The detachable fastening can be realized by a form-fitting connection, which is characterized in particular by ensuring easy assembly and disassembly of the curtain segments or the connecting device.

[0016] In a door according to the invention, the connecting device has two receptacles, each assigned to one of the curtain segments to be connected, for positively receiving one of the mutually facing edges of the curtain segments. For example, the connecting device has a receptacle assigned to an upper edge of the curtain segment forming the lower edge of the curtain and a receptacle assigned to the lower edge of the curtain segment trailing in the closing direction. The edges can have thickened portions, for example in the form of a bead or a piping. The positive engagement between the edge and the receptacle can be realized, for example, in the manner of a piping rail.

[0017] According to an exemplary development, the receptacles are manufactured from a single piece. For example, the receptacles, in particular the connecting device, can be manufactured using a plastic injection molding process, a plastic extrusion process, or a foaming process. This allows for cost-effective manufacturing processes suitable for mass production. The receptacles can each have a guide groove extending in the longitudinal direction of the receptacles, which, when mounted on the curtain, is oriented transversely to the path of movement of the door leaf, in particular with a cross-section that is constant in the direction of the predetermined parting line, for inserting the edges of the curtain segments. The edges are inserted in the longitudinal direction of the guide grooves.Furthermore, the receptacles can each have a longitudinal opening oriented in the direction of the door leaf's path of movement for sections of the curtain segments adjoining the edges or for connecting means coupled to the curtain segments. This means that the edges are either manufactured or formed as a single piece with the respective curtain segments or are part of separate connecting means which are, in particular, materially bonded to the curtain segments. Furthermore, the longitudinal openings can have a clear width in the load direction that is smaller than the maximum dimensions of the thickened portions accommodated in the receptacles in this direction. The design of the receptacle with a guide groove and longitudinal opening enables simple assembly for the positive coupling of the connecting device to the curtain segments, as well as simple disassembly.This allows even inexperienced operators to replace a damaged curtain segment and / or the connecting device in the event of damage and / or maintenance. The positive alignment of the guide groove and edge also provides a predefined assembly and disassembly direction, ensuring easy assembly and disassembly and preventing incorrect assembly. Furthermore, the edges are guided lengthwise into the guide grooves in the holder when inserted. Due to the positive engagement, the connecting device can be easily pulled or pushed onto the curtain segments without tilting or jamming.

[0018] In a further exemplary embodiment of the door according to the invention, the connecting device is designed such that when a load acting on the curtain exceeds a predetermined load limit in the load direction, at least one of the curtain segments, in particular both, is released by utilizing the deformability of the connecting device, for example by widening the longitudinal opening. This design of the door leaf is based on the knowledge that impact damage or collisions with, for example, forklifts often result in damage to the curtain in the area of the fastening interface between the curtain segment and the connecting device. This design of the door leaf is particularly noticeable when high loads act, for example when the object causing the collision, such as the forklift, is traveling at high speeds.Because the connecting device releases at least one of the curtain segments as soon as the applied load exceeds a predetermined load limit, the connecting device is equipped with damage protection. In other words, the fastening interface between the curtain segment and the connecting device forms a predetermined separation line or separation area, so that if the applied load is too high, the fastening, in particular the positive engagement, between the curtain segment and the connecting device is released. This provides damage protection even at the expense of at least partial, in particular automatic, disassembly of the door leaf.The edges of the curtain segments can be shaped to match the dimensions of the longitudinal openings of the connecting device receptacles such that, when the predetermined load limit is exceeded, the edges are pushed through the longitudinal openings, at least in sections, by utilizing the elastic flexibility of the connecting device and / or the edges themselves and can escape from the guide grooves. For example, the load limit is approximately 20 kg / m. Preferably, the detachable connection between the curtain segments, in particular the connecting device, is designed such that, in the event of a load, damage to the curtain segment trailing in the closing direction is avoided. This may, under certain circumstances, result in damage to the curtain segment leading in the closing direction, in particular forming the lower edge of the curtain.

[0019] In a further exemplary embodiment of doors according to the invention, the cross-section of the connecting device is symmetrical in a sectional plane running perpendicular to the longitudinal direction with respect to an axis oriented in the direction of movement, in particular a vertical central axis, and / or with respect to an axis oriented parallel to the predetermined dividing line, in particular a horizontal central axis. Due to the double-axis symmetry, the connecting device has a geometry that is easy to manufacture. Furthermore, assembly is facilitated because the orientation of the connecting device with respect to the curtain is not important. For example, the connecting device can have a double C-shape in cross-section. Furthermore, the connecting device can have a connecting web connecting the receptacles, which is in particular made in one piece with the receptacles and through which the horizontal axis of symmetry runs.

[0020] According to an exemplary embodiment, the connecting device is arranged at a distance of 250 mm to 1,250 mm from the floor in the closed position. Since the curtain is usually damaged at a lower edge area in the closed position, it is advantageous to arrange the connecting device at a vertical height such that most of such collision damage can be repaired by simply replacing the lower curtain segment, possibly including the connecting device. For example, the connecting device is located at a distance of 350 mm to 1,000 mm or up to 500 mm from the floor.

[0021] In another exemplary embodiment, the connecting device is designed as a double piping rail. It has been discovered that this known, advantageous fastening technique can also be used to satisfactorily connect two curtain segments.

[0022] According to another exemplary embodiment, two additional curtain segments arranged consecutively in the direction of the movement path are permanently connected to one another, in particular glued and / or welded. The door leaf can be designed such that, with the exception of the curtain segment forming the lower edge of the curtain, all curtain segments are permanently connected to one another. This eliminates the need for the rigid aluminum extruded profiles used in the prior art to connect curtain segments, which had a negative impact on the running speeds of the doors. Furthermore, the production of door leaves for doors according to the invention is also facilitated.

[0023] According to an exemplary development of the present invention, the curtain segments are connected to one another in such a way that they can only be separated from one another when a securing device is released. In this context, the separability of the curtain segments in the direction of the intended separation line or the intended separation area is meant. The deformability of the curtain segments and their separability from one another in the load direction can still be maintained. For example, the connecting device can be assigned a securing device to prevent relative movement of the curtain segments in the direction of the intended separation line or to prevent the curtain segments from moving away from one another in the direction of the intended separation line.A securing device, such as an end cap or securing cap, can be arranged at at least one lateral end of the connecting device, in particular at both lateral ends of the connecting device, which is detachably connected to the connecting device and / or one of the curtain segments, in particular screwed, latched, or clamped. The securing device can, for example, be shaped and / or dimensioned such that it overlaps the securing device on at least one side in the direction of the movement path and can optionally be applied to a lateral edge of the curtain.

[0024] In a further exemplary development of the door according to the invention, the securing device is positively connected to the connecting device. The positive connection can be such that the securing device overlaps the connecting device in the load direction. For example, the securing device has a receiving recess that is shaped to match the connecting device and in which a lateral end of the connecting device can be received, in particular in a clamping manner. The securing device can be designed to increase stability in the lateral edge region of the connecting device. For example, the securing device can counteract deformation of the securing device in the load direction in the lateral edge region of the connecting device.In this respect, the safety device can perform a dual function, namely preventing a relative movement of the curtain segments in the direction of the predetermined separation line and reducing or preventing a deformation of a lateral edge area of the safety device in the load direction.

[0025] According to an exemplary development, the connecting device is provided with at least one, in particular with at least two, three or four, fastening holes for receiving fastening means, such as screws, clips or the like, for fastening the securing device and the connecting device together. Furthermore, it is possible for the securing device to be free of any direct fastening to the curtain segments, but to be coupled to the curtain segments exclusively indirectly via the connecting device. This can be advantageous, for example, because in the event of severe overloading, a complete separation of the curtain segments from one another can be ensured, thus avoiding possible damage to the curtain segments.

[0026] In embodiments of the invention, curtain segments made of different materials are connected to one another using the connecting device. For example, a curtain segment made of a transparent material can be connected to an opaque curtain segment, such as a fabric-like material. The curtain segments made of different materials typically have different coefficients of expansion. A curtain segment made of transparent material, for example, can be subject to a shrinkage process.In order to avoid defects in the area of a transition between the individual curtain segments, it has proven to be expedient, particularly when connecting curtain segments made of different materials, if at least one fixing device is provided which is designed to fix at least one edge of at least one curtain segment running perpendicular to the path of movement with respect to at least one connecting device.

[0027] The fixing device can have at least one fixing bolt, such as a fixing screw, which extends through an edge to be fixed and in particular transversely, preferably approximately perpendicular to the closing plane. In other embodiments of the invention, a fixing bolt can extend approximately parallel to the edge of a curtain segment to be fixed and can be received in the receptacle of a connecting device which receives this edge, wherein the fixing bolt in this embodiment presses the edge to be fixed against a boundary surface of the receptacle. However, for the purposes of reliable fixing, it has proven particularly expedient if the fixing bolt extends perpendicular to the edge to be fixed and penetrates this edge, in particular is screwed into this edge.

[0028] In an exemplary embodiment of the present invention, the restoring force counteracting deformation of the connecting device in the load direction is smaller than the restoring force counteracting deformation of the stabilizing device in a direction perpendicular to the load direction. As a rule, the load direction points into the space to be closed by the door leaf or in the opposite direction. This can further reduce the consequences of damage resulting from a collision, for example with a forklift truck, because the curtain is capable of converting a larger proportion of the kinetic energy into deformation energy without causing damage such as cracks, particularly at the connection points between the curtain and the connecting device.

[0029] According to a further exemplary embodiment, the door according to the invention has at least one guide device arranged on a lateral edge of the door leaf, by means of which the door leaf is guided during a movement in the closing plane. Furthermore, the door can have an inlet arrangement arranged on the upper edge of the guide device, with which the lateral edge of the door leaf can be automatically introduced into the guide device during a closing movement. With regard to the inlet arrangement, reference is made to WO 2004 / 088080 A1, the content of which is incorporated herein by reference. In particular, the inlet arrangement has at least two pre-tensioning devices on the upper edge of the guide device which can be applied to opposite boundary surfaces of the door leaf and / or a stabilizing element arranged on the lower edge thereof, with which pre-tensioning devices the door leaf orthe stabilizing device is forced in opposite directions and transverse to the path of movement of the door leaf.

[0030] In a further exemplary embodiment, the curtain segment that leads along the movement path during a closing movement, in particular forming the lower edge of the curtain, has an optical indicator that is visually different from the adjacent curtain segment. This can attract increased attention, for example, from people who want to pass through the gate with vehicles such as forklifts. Furthermore, increased visibility is achieved, particularly in the dark, so that possible damage can be prevented. For example, the optical indicator can be a coloring or paint on the curtain segment, a print, or an indication means applied to the curtain segment in another way, e.g., glued. The optical indicator can have a higher degree of reflection than the adjacent curtain segment.Furthermore, the optical indicator can be designed as a yellow or red warning bar, for example, to provide an additional visual indication of a possible danger point.

[0031] In embodiments of the invention, at least one connecting device can be provided with a securing device designed to absorb axial forces acting parallel to the edges of the curtain segments extending perpendicular to the path of movement. Such a securing device can prevent the edges of the door leaf extending parallel to the path of movement from being displaced in a direction perpendicular to the path of movement because the corresponding axial forces are absorbed by the securing device.

[0032] A safety device designed to absorb axial forces can comprise securing means fixed relative to the wall opening and at least one securing module attached to the door leaf, in particular to the connecting device, with at least one contact surface that can be applied to a counter surface of the securing means to absorb axial forces. When axial forces acting perpendicular to the movement path occur on an edge of the door leaf extending parallel to the movement path, the contact surface of the safety module is applied to the counter surface of the securing means. This inhibits any displacement of the lateral edge of the door leaf extending parallel to the movement path in a direction perpendicular to the movement path.

[0033] In embodiments of the invention, the contact surface of the safety module can be formed by at least one guide roller, which is mounted rotatably in particular with respect to a roller axis which, in the closed position, runs perpendicular to the closing plane. In the closed position, this guide roller is preferably accommodated in a securing means designed as a hollow profile which extends approximately in the direction of gravity and is penetrated by a slot through which a lateral edge of the door leaf passes. In this embodiment of the invention, the securing device acts not only to absorb axial forces but also as a guide means for guiding the movement of the door leaf. The safety module can have two guide rollers on opposite sides of the door leaf orThe connecting device has guide rollers arranged on it, which are rotatably mounted with respect to coaxially extending roller axes and can be applied to corresponding counter surfaces of the securing means designed as a hollow profile. In embodiments of the invention, corresponding securing means and securing modules can be provided on opposing edges of the door leaf extending parallel to the path of movement. The securing modules can be attached to opposite axial ends of at least one connecting device, in particular by means of form-fitting, force-fitting, and / or material-fitting fastening.

[0034] Within the scope of the invention, the connecting device is designed to be deformable, in particular elastically deformable, at least in sections to ensure the deformability of the mutually facing edges of the track segments. With a deformable connecting device provided within the scope of the invention, the desired axial force securing can be achieved without impairing the deformability of the connecting device if the securing device has a tension securing device connecting the securing modules attached to opposite axial ends of the connecting device. This tension securing device can be designed, for example, in the form of a strand body, in particular a cable, such as a wire cable, which is capable of transmitting tensile and / or compressive forces without significantly impairing the deformability of the edges of the door leaf running perpendicular to the movement path.The tension protection, such as a wire rope or the like, can pass through a channel in the connecting device extending parallel to the edges of the curtain segments.

[0035] In embodiments of the invention with a safety device comprising safety modules, it has proven expedient for at least one fixing bolt, such as at least one fixing screw, to penetrate at least one safety module. In the closed position of the door leaf, the fixing bolt can extend perpendicular to the closing plane of the door leaf and penetrate both the safety module and the edge of a curtain segment extending transversely to the movement path. This edge of the curtain segment can protrude axially beyond the connecting device and be accommodated in the safety module.

[0036] Preferred embodiments are specified in the subclaims.

[0037] The invention is explained below with reference to the drawings, to which reference is expressly made for all details essential to the invention and not further detailed in the description. The drawings show: Fig. 1 shows a section of an exemplary embodiment of a connecting device of a door according to the invention; Fig. 2 shows a sectional view of the connecting device from Figure 1 ; Fig. 3 a perspective view of another exemplary embodiment of a connecting device of a door according to the invention; Fig. 4 a sectional view of the connecting device from Fig. 3; Fig. 5 shows a section of an exemplary embodiment of a door according to the invention in the assembled state in a wall opening of a wall; Fig. 6 shows a schematic principle sketch of a door according to the invention, in which two curtain segments are detachably fastened to one another by means of a connecting device; Figs. 7-9 show various views of a securing device associated with a connecting device; Fig. 10 shows a perspective view of another exemplary embodiment of a connecting device of a door according to the invention; Fig. 11 shows a sectional view of the connecting device from Fig. 10; Fig. 12 a front view of another exemplary embodiment of a safety device for a door according to the invention; Fig. 13 a front view of another exemplary embodiment of a safety device for a door according to the invention; Fig. 14 a perspective view of a door leaf of a door according to the invention with a safety module; Fig. 15 a horizontal sectional view of a door according to the invention with a safety device; Fig. 16 an exploded view of the door leaf of the Fig. 15 shown door; and Fig. 17 an exploded view of a door leaf with fixing device.

[0038] In the following description of exemplary embodiments of the present invention, a door according to the invention is generally provided with the reference number 1. In the attached figures, the door 1 according to the invention is designed, for example, as a roller door, the door leaf 5 of which is designed in the form of a web-shaped curtain 3 and is arranged between a Figure 5 shown closed position, in which it closes a wall opening, and an open position, in which the door leaf 5 can be wound up or is wound up into a multi-layer roll, can be moved along a predetermined movement path R.

[0039] Referring to the Figures 1 and 2 An exemplary embodiment of a connecting device 7 for detachably fastening the curtain segment 9 forming the lower edge of the curtain 3 to an adjacent curtain segment 11, which follows the lower curtain segment 9 during a closing movement, is described. The connecting device 7 is shown in the Figures 1 to 3realized as a double piping rail, which is made of an elastically deformable or flexible material and in one piece. The connecting device 7 has two identically designed receptacles 13, 15, each assigned to one of the curtain segments 9, 11, each equipped with a guide groove 17, 19 and a longitudinal opening 21, 23 extending in the longitudinal direction of the connecting device 7. In conjunction with the Figure 5 It can be seen that the longitudinal direction of the connecting device 7, in the mounted state on the curtain 3, is oriented transversely, in particular perpendicularly, to the path of movement R of the door leaf 5 during an opening and closing movement. The longitudinal direction of the connecting device 7 in the mounted state, which also defines the desired separation line, is also referred to below as the width direction B.

[0040] In the Figure 2In the sectional view of the connecting device 7 shown, it can be seen that the connecting device 7 has a constant cross-section along its entire longitudinal extent in the longitudinal direction or width direction B. Furthermore, the exemplary embodiment of the connecting device 7 according to the Figures 1 to 3 The cross-section is double-axis symmetrical. As in Figure 2 As can be seen, the connecting device 7 is axially symmetrical with respect to a vertical center axis MV oriented in the direction of the web direction R. Furthermore, the connecting device 7 is axially symmetrical with respect to a horizontal center axis MH extending through a connecting web 25 connecting the two C-shaped receptacles 13, 15 and oriented parallel to the desired separation line.

[0041] The advantage of the door 1 according to the invention lies, among other things, in the elasticity of the connecting device 7 and in the positive connection option thus provided between the lowest curtain segment 9 and the curtain segment 11 arranged above it in the closed position. The assembly of the individual curtain segments 11, 9 with the connecting device 7 is carried out according to the following principle: The connecting device 7, in particular its receptacles 13, 15, is designed to be open at both ends, on which insertion openings 27, 29 are provided, via which edges of the curtain segments 9, 11 running transversely to the direction of movement R, which edges are usually equipped with thickened portions such as beads or piping, can be inserted laterally into the receptacles 13, 15 and along the guide grooves 17, 19.Sections of the curtain segments 9, 11 adjoining the edges or connecting elements coupled to the curtain segments 9, 11, such as piping flags, which have a narrower cross-section than the thickened portions, can be led out of the receptacles 13, 15 via the longitudinal openings 21, 23, which are narrower in cross-section and oriented in the direction of movement R in the assembly position. This creates a form-fitting engagement between the curtain segments 9, 11 and the connecting device 7 that is easy to assemble and disassemble.

[0042] The connecting device 7 of the Figures 3 and 4 Its functionality and basic structure are similar to those of the connecting device 7 of the Figures 1 and 2 In contrast to the execution of the Figures 1 and 2 The connecting device 7 of the Figures 3 and 4a higher stability, especially in the load direction. The stabilizing device 7 is reinforced in the area of the connecting web 25 and has a central reinforcement area 45, into which the two receptacles 13, 15 open. A further difference is that the outer contour of the receptacles 13, 15 is not circular as in the design according to the Figures 1 and 2 shaped, but is formed by two straight outer contour sections 47, 49 arranged at an angle to one another, of which the outer contour section 47 adjoining the reinforcement area 45 is oriented substantially parallel to the closing plane of the door 1 in the assembled state.

[0043] For example, the connecting device 7, regardless of whether it is designed according to the embodiment in the Figures 1, 2 or as described in the Figures 3, 4shaped, has a depth measured in the load direction in the range of 10 mm to 20 mm and a height measured in the web direction R in the range of 15 mm to 30 mm.

[0044] A section of a door 1 according to the invention is shown in its fully closed position in Figure 5shown. The door has a stabilizing device 33 arranged on the lower edge 31 of the lower curtain segment 9, which is designed, for example, according to WO 2004 / 088080 A1. The stabilizing device 33 rests flat on the floor 35. Guide devices, such as guide rollers or guide rails, can be arranged on the lateral edges 37 of the door leaf 5. These guide devices cooperate with associated guide elements arranged on the wall 39 delimiting the wall opening, which wall 39 can also have a frame profile 41, for example, in order to guide and support the closing and opening movement of the door leaf 5. The guide device-guide element arrangement 43 defines the movement path R.

[0045] By means of the roller shutter 1 according to the invention, the conflict of interest underlying the present invention, namely high running speed and high wind stability on the one hand, and simple repair and maintenance options on the other, can be resolved. The functional separation of the stabilization of the curtain 3, which is achieved by the stabilization device 33, and the attachment of the curtain segments 9, 11 to one another, which is performed by the connecting device 7, plays a crucial role. If the curtain 3 is damaged, it is no longer necessary to replace the entire curtain 3.It is possible to separate the curtain segment 9 forming the lower edge of the curtain 3 from the curtain segment 11 following in the opening direction in a simple, cost-effective and easy-to-assemble manner, so that one of the curtain segments 9, 11 and / or the connecting device 7 can be replaced, while the other door components can remain installed.

[0046] Figure 6 shows a schematic diagram of a door 1 according to the invention, in which the connecting device 7 detachably connects two adjacent curtain segments 9, 11, wherein the connecting device 7 is designed in accordance with the embodiment of the Figures 3 and 4 The mutually associated edges of the curtain segments 7, 9 are positively received in receptacles 13, 15 of the connecting device 7 and are releasably fastened therein. The connecting device 7 is in Figure 6provided at both lateral ends with a securing device 51 each, which is applied to a lateral edge 37, 38 of the curtain segments 9, 11 and which is screwed to the connecting device 7 with two screws 53 each, in order to prevent an unwanted relative movement of the curtain segments 9, 11 in the direction of the intended dividing line or an unwanted separation of the curtain segments 9, 11 in the direction of the intended dividing line or in the longitudinal direction of the connecting device 7.

[0047] The safety device 51 is in the Figures 7 to 9 shown, where Figure 7 a perspective view, Figure 8 a top view and Figure 9 a sectional view along section line IX-IX on Figure 8For example, the securing device 51 is implemented as an end or securing cap, which can be made of plastic or metal, for example. So that the securing cap 51 can be screwed to the connecting device 7, the securing cap 51 is provided with two through-holes 55, 57 for the screws 53. The through-holes 55, 57 are positioned and dimensioned such that the screw connection takes place in the lower edges, in particular thickened portions, of the curtain segments 9, 11. Furthermore, the securing cap 51 has a recess 61 formed on an upper side 59, so that the screws 53 are essentially countersunk within the recess 61 when screwed in. Furthermore, the recess 61 can be dimensioned such that the connecting device 7 can be received therein. An inner dimension of the recess 61 can be matched to an outer contour of the connecting device 7.The adjustment may be such that the connecting device 7 is held in the recess 61 in a form-fitting and / or clamping manner. Referring again to . Figure 6 It can be seen that the securing device 51 is larger in the direction of the movement path than the connecting device 7 and protrudes beyond the connecting device 7 in the direction of the movement path and overlaps it. This allows the securing device 51 to be applied to the lateral edges 37, 38 of the curtain segments 9, 11.

[0048] In the Figures 10, 11 A further exemplary embodiment of a connecting device 7 is shown, which basically functions like the connecting device 7 from the Figures 3 to 4and is provided with two lateral fastening holes 63, 65 for receiving fastening means, such as screws, clips or the like, for fastening the securing device 51 and the connecting device 7 together. The connecting device 7 can be connected to the securing device 51 according to the Figures 7 to 9 or with the safety device 51 according to Figure 12 or 13 which represent further exemplary embodiments. If the connecting device 7 is combined with the securing device 51 from Figure 12 combined, the safety device 51 is free from direct attachment to the curtain segments 9, 11. The attachment is made exclusively indirectly via the fastening holes 63, 65 arranged in the connecting device 7, to which two through holes 67, 69 in the safety device 51 are assigned. In a combination with the safety device 51 from Figure 13The fastening can be carried out via the through holes 67, 69 as well as via the central holes 55, 57.

[0049] In the Figures 14 to 16In the embodiments of the invention shown, securing modules 110 and 120 are mounted on opposite ends of the connecting device 7. Each of these securing modules 110 and 120 comprises an end cap 112 or 122, which receives the axial end of the connecting device 7 and has a slot 114 or 124 through which the lateral edges of the curtain segments 9 and 11 pass. Guide rollers 116, 118 and 126, 128 are rotatably mounted on the caps 112 and 122 of the securing modules 110 and 120 with respect to roller axes that run perpendicular to the closing plane in the closed position. The guide rollers 116, 118 and 126, 128 are arranged on opposite sides of the curtain segments. The guide rollers 116, 118 and 126, 128 interact with guide means 130 and 140, respectively, designed as hollow profiles. These guide means are arranged fixedly with respect to the wall opening and accommodate the guide rollers 116, 118 and 126, 128, respectively.The boundary walls 132, 142 of the hollow profiles 130, 140 facing the wall opening are penetrated by slots 132 and 142, respectively, which are penetrated by the caps 112 and 122 placed on the connecting device 7. The guide rollers 116, 118 and 126, 128 form contact surfaces that can roll onto the boundary surfaces of the boundary walls facing away from the wall opening, through which the slots 132, 142 pass. This, on the one hand, enables guidance of the movement of the door leaf. On the other hand, the safety modules 110, 120, in cooperation with the safety means 130 and 140, respectively, implement a safety device that absorbs axial forces acting in the direction of the connecting device 7.

[0050] To absorb the axial forces and to relieve the connecting device 7, the safety device of the Figures 14 to 16The embodiment of the invention shown in the drawing is equipped with an additional tension protection device 150, via which the caps 110 and 120 attached to opposite ends of the connecting device 7 are connected to one another. Figures 14 to 16 In the embodiment of the invention shown, the additional tension protection device is designed in a cable-shaped manner and is accommodated in a channel 170 that extends axially through the connecting device 7 between the receptacles 13 and 15. The tension protection device can be attached to the caps 110 and 120 in a form-fitting, force-fitting, and / or material-fitting manner. The caps 110 and 120 can be attached to the connecting device 7 in a form-fitting, force-fitting, and / or material-fitting manner.

[0051] In the Figures 14 to 16 In the embodiment of the invention shown, the outer contour of the connecting device 7 corresponds approximately to the outer contour of the connecting device according to the Figures 3 and 4. In other embodiments of the invention, the securing device can also be used in conjunction with connecting devices according to the Figures 1 and 2 In this case, the train protection device can comprise two rope-like or strand-like elements, which can be arranged on either side of the plane of symmetry MV and within the plane of symmetry MH. The caps of the safety device can also be pressed onto the connecting device. Additionally, they can be glued and / or screwed.

[0052] The Fig. 17 The gate shown differs essentially from the gates shown in the Figures 14 to 16 explained doors, that the edges of the curtain segments 9 and 11 to be connected to each other extend in the axial direction beyond the connecting device 7 and are penetrated by holes 209, 211. The edges of the curtain segments extending beyond the connecting device 7 are in the Fig. 17In the embodiment of the invention shown, the connecting means are formed by connecting means which, in the assembled state, are received in the end caps 112, 122 of the securing modules 110, 120. The end caps are penetrated by holes 229, 231 at the locations corresponding to the holes 209, 211, which, in the assembled state, are aligned with the holes 209, 211 and serve to receive fixing bolts 309, 311 designed as fixing screws, to which the edges of the curtain segments 9, 11 extending perpendicular to the path of movement can be fixed with respect to the end caps and the connecting device 7. LIST OF REFERENCE SYMBOLS

[0053] 1 Door 3 Curtain 5 Door leaf 7 Connecting device 9, 11 Curtain segment 13, 15 Receptacle 17, 19 Guide groove 21, 23 Longitudinal opening 25 Connecting web 27, 29 Insertion opening 31 Lower edge 33 Stabilizing device 35 Floor 37, 38 Side edge 39 Wall 41 Frame profile 43 Guide arrangement 45 Reinforcement area 47, 49 Outer contour section 51 Locking device 53 Screw 55, 57 Bore 59 Top 61 Recess 63, 65 Mounting hole 67, 69 Through hole 110, 120 Securing modules 114, 124 Slot 112, 122 End caps 116, 118, 126, 128Guide rollers 130, 140Hollow profiles 132, 142Boundary walls 150Tension protection 170Channel 209, 211, 229, 231Bore holes 309, 311Fixing bolts BBidth direction MV Vertical center axis MH Horizontal center axis RMovement path

Claims

1. A door (1), in particular a roller door, having a door leaf (5) which is designed at least in sections thereof as a web-like curtain (3) made of flexible material, and which can be moved along a movement path (R) between an open position, in which it at least partially exposes a wall opening and optionally forms a multi-layered roll above the wall opening, and a closed position, in which it at least partially closes the wall opening, wherein a stabilizing device (33) extending transversely, in particular approximately perpendicularly, to the movement path (R) is associated with the web-like curtain (3), which at least in the closed position counteracts a deformation of the curtain (3) in a load direction extending perpendicularly to a closing plane spanned by the movement path (R) and the stabilizing device (33), characterized in that the web-like curtain (3) has at least two curtain segments (9, 11) which follow one another in the direction of the movement path and which are releasably connected to one another along at least one predetermined separating line, or a predetermined separating region, preferably extending approximately perpendicularly to the movement path in the closing plane in such a way that the mutually facing edges of the curtain segments (9, 11) extending transversely, in particular perpendicularly, to the movement path remain deformable, and having a connecting device (7) which is deformable, in particular elastically deformable, at least in sections thereof for releasably connecting the mutually facing edges of the curtain segments (9, 11), wherein the connecting device (7) has two receptacles (13, 15), each associated with one of the curtain segments (9, 11) to be connected, for formitting accommodation of a respective one of the mutually facing edges of the curtain segments (9, 11), wherein in particular the edges have thickenings, in particular are formed as beads or keders, and wherein the connecting device (7) consists of an elastomer material and / or plastic.

2. Door (1) according to Claim 1, characterized in that the receptacles (13, 15) are produced from one piece with one another and / or each have a guide groove (17, 19), extending in the longitudinal direction of the receptacles (13, 15), in particular with a cross section which is constant in the direction of the predetermined separating line, for introducing the edges in the longitudinal direction, and each have a longitudinal opening (21, 23), oriented in the direction of the movement path (R), for sections of the curtain segments (9, 11) adjoining the edges or for connecting means coupled to the curtain segments (9, 11), wherein the longitudinal openings (21, 23) in the load direction have a clear width which is smaller than the maximum dimensions of the thickenings accommodated in the receptacles (13, 15) in this direction.

3. Door (1) according to Claim 1 or 2, characterized in that the connecting device (7) is formed in such a way that, in the event of a load which acts on the curtain (3) and exceeds a predetermined load limit in the load direction, at least one of the, in particular both, curtain segments (9, 11) is released.

4. Door (1) according to one of the preceding claims, characterized in that the cross section of the connecting device (7) is formed symmetrically in a sectional plane extending perpendicularly to the longitudinal direction with respect to an axis oriented in the direction of the movement path (R) and / or with respect to an axis oriented parallel to the predetermined separating line, in particular extending through a connecting web connecting the receptacles (13, 15).

5. Door (1) according to one of the preceding claims, characterized in that the connecting device (7) in the closed position is arranged at a distance in the range of 250 mm to 1250 mm from the ground.

6. Door (1) according to one of the preceding claims, characterized in that the connecting device (7) is formed as a double keder rail.

7. Door (1) according to one of the preceding claims, characterized in that two further curtain segments (9, 11) following one another in the direction of the movement path (R) are non-releasably connected, in particular adhesively bonded and / or welded, to one another.

8. Door (1) according to one of the preceding claims, characterized in that the restoring force counteracting a deformation of the connecting device (7) in the load direction is smaller than the restoring force counteracting a deformation of the stabilizing element (33) in the load direction.

9. Door (1) according to one of the preceding claims, characterized in that the curtain segments (9, 11) are connected to one another in such a way that they are releasable from one another only when a securing means is released, wherein in particular a securing device (51) for preventing a relative movement of the curtain segments (9, 11) in the direction of the predetermined separating line is associated with the connecting device (7).

10. Door (1) according to Claim 9, characterized in that the securing device (51) is connected to the connecting device (7) in a formfitting manner.

11. Door according to one of the preceding claims, characterized by at least one fixing device designed for fixing at least one edge, extending perpendicularly to the movement path, of at least one curtain segment (9, 11) with respect to at least one connecting device (7).

12. Door according to Claim 11, characterized in that the fixing device has at least one fixing bolt, in particular fixing screw, passing through an edge to be fixed and extending in particular transversely, preferably approximately perpendicularly, to the closing plane.

13. Door (1) according to one of the preceding claims, characterized by at least one guide device arranged on a lateral edge of the door leaf (5), by means of which guide device the door leaf (5) is guided during a movement in the closing plane, and an inlet arrangement arranged on the upper edge of the guide device, by means of which inlet arrangement the lateral edge of the door leaf (5) can be introduced automatically into the guide device during a closing movement.

14. Door (1) according to one of the preceding claims, characterized in that the curtain segment (9) which leads during a closing movement along the movement path (R) and forms in particular the lower edge of the curtain (3) has an optical indicator which differs optically from the adjacent curtain segment (11).

15. Door according to one of Claims 1 to 12, characterized in that a securing device designed for accommodating axial forces acting parallel to the edges of the curtain segments extending perpendicularly to the movement path is associated with at least one connecting device (7).

16. Door according to Claim 13, characterized in that the securing device has securing means (130, 140) attached in a fixed manner with respect to the wall opening and at least one securing module attached to the door leaf (5), in particular to the connecting device (7), having at least one contact surface which can be placed against a mating surface of the securing means (130, 140) for accommodating axial forces.

17. Door according to Claim 14, characterized in that the contact surface is formed by at least one guide roller (116, 118, 126, 128) which is mounted rotatably in particular with respect to a roller axis extending perpendicularly to the closing plane in the closed position and which preferably in the closed position is accommodated in a securing means (130, 140) designed as a hollow profile and extending approximately in the direction of gravity and passed through by a slot (132, 142) through which a lateral edge of the door leaf passes.

18. Door according to Claim 14 or 15, characterized in that the securing device has at least two securing modules (110, 116, 118, 120, 126, 128) attached to mutually opposite axial ends of at least one connecting device (7), in particular fastened in a formfitting, force-fitting and / or integrally bonded manner.

19. Door according to Claim 16, characterized in that the securing device has a tension securing means (150) connecting the securing modules (110, 116, 118, 120, 126, 128) to one another.

20. Door according to Claim 17, characterized in that the tension securing means passes through a channel (170) in the connecting device (7) extending parallel to the edges of the curtain segments (9, 11).

21. Door according to Claim 12 and one of Claims 16 to 20, characterized in that at least one fixing bolt, such as, for instance, at least one fixing screw, passes through at least one securing module.

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