DOOR, IN PARTICULAR A QUICK-ACTION ROLL-UP DOOR

Abstract

A quick-action roll-up door includes a flexible door leaf (6) with a vertical running direction for closing a door opening bordered by a door frame (1). The quick-action roll-up door includes a drive (7) for the opening and closing of the door and a pressing fixture, with which the door leaf in a door leaf closed position can be pressed against the door frame (1).

Claims

1. A quick-action roll-up door comprising: a flexible door leaf with a vertical running direction for the closing of a door opening bordered by a door frame; a drive for opening and closing the door; and a pressing fixture configured to press the door leaf, in a door leaf closed position, towards the door frame.

2. The door according to claim 1, wherein: the door leaf has two vertically running door leaf side regions; the pressing fixture comprises a pressing frame which covers the door leaf in the door leaf closed position at least in sections of the two vertically running door leaf side regions of the door leaf.

3. The door according to claim 2, further comprising drive means configured to move the pressing frame and to apply a force in a direction of the door frame or to apply a force in a direction opposite to the direction of the door frame or to apply a force in a direction of the door frame and in a direction opposite to the direction of the door frame.

4. The door according to claim 2, wherein: the pressing frame comprises at least one horizontal section, which connects two vertically running sections at a top; and the pressing frame is mounted swivellable about an axis adjacent to the floor or linearly movable.

5. The door according to claim 2, wherein the pressing frame is formed with an open region at a lower side thereof.

6. The door according to claim 2, wherein: the pressing fixture comprises a pressing frame; the pressing frame comprises a rotatably mounted guide roll for deflecting the door leaf, wherein the guide roll is at a pressing frame upper side; and the door leaf roll is provided above the guide roll such that, during a rotation of the door leaf roll in a wind-up direction, a transverse force is exerted in a direction away from the door frame onto the guide roll.

7. The door according to claim 2, wherein the pressing frame is moveable and is configured to receive an applied force thereto towards the door frame by means of a spindle drive.

8. The door according to claim 2, wherein: the pressing frame is moveable; and at least two spindle drives are arranged in respective corner regions of the pressing frame and are driven synchronously.

9. The door according to claim 7, wherein the spindle drive comprises drive spindles mounted rotatably in the pressing frame; the drive spindles engage in spindle nuts arranged on a door frame side; and the drive spindles are drive-connected to a drive motor provided centrally outside on the pressing frame.

10. The door according to claim 9, wherein a toothed belt drive-connects the drive motor to the spindle drives.

11. The door according to claim 8, wherein: the spindle drives are mounted movable to a limited extent in the pressing frame; and a spring means applies force to the pressing frame opposite to the pressing direction.

12. The door according to claim 7, wherein: the spindle drive comprises a drive spindle; a helical spring surrounds the drive spindle and has a force action between door frame and the pressing frame.

13. The door according to claim 2, wherein spring means apply a force to and press the pressing frame in the direction of the door frame.

14. The door according to claim 2, further comprising a locking mechanism which maintains the pressing frame at a distance from the door frame and is activatable by a control means on a door leaf side.

15. The door according to claim 14, wherein the locking mechanism comprises at least one locking lever arranged at the door frame side and to which a spring force is applied towards a locking position, said locking lever being moveable out of the locking position by a control element arranged on the door leaf side.

16. The door according to claim 1, wherein the door leaf is configured as insulating for use in a cold storage room or a deep-freeze room and/or as a fire protection door.

17. The door according to claim 16, wherein the door leaf comprises a segmented and/or textile door leaf, which can be wound up into a door leaf roll on an outside above the door frame.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In the drawings:

[0032] FIG. 1 is a partially in cross-sectional side view, in a very simplified diagrammatic representation, of a first embodiment of a door according to the invention;

[0033] FIG. 2 is a front view of the door according to FIG. 1;

[0034] FIG. 3 is an enlarged detail view showing detail III in FIG. 1;

[0035] FIG. 4 is a partially in cross-sectional side view, in a very simplified diagrammatic representation, of the door according to the invention;

[0036] FIG. 5 is a front view of the door according to FIG. 4;

[0037] FIG. 6 is an enlarged side view of the locking mechanism in the locking position; and

[0038] FIG. 7 is a view showing the locking mechanism according to FIG. 6 in the released position.

DESCRIPTION OF PREFERRED EMBODIMENTS

[0039] Referring to the drawings, the quick-action roll-up door represented in FIGS. 1-3 comprises a door frame 1, which closed off and completely surrounds a door opening in a wall of a room to be closed off to the exterior by the door, said door frame not being represented in detail here. Door frame 1 represented here in detail can also be formed by the door opening itself, if the corresponding components are fitted or constituted directly there.

[0040] The door frame 1 comprises two vertically arranged frame parts 2 laterally bordering the door opening, which are connected to one another at the upper side by a lintel-like support 3 and which together determine the clearance profile of the opening. Vertical frame parts 2 adjoin supports 4 arranged at right angles thereto and projecting into the free space in front of the door, between which supports a shaft 5 is mounted, on which a door leaf 6 can be wound up or unwound. For this purpose, a drive 7 is provided at one end of shaft 5 beyond support 4, which is not described in detail here, and at the other side a braking device 8, which ensures that shaft 5 of door leaf roll 9 is fixed in the event of failure of the drive.

[0041] Door leaf 6 is made of a flexible material, is formed in an extensive manner and has a width which overlaps somewhat vertical frame parts 2 of door frame 1. By a suitable operation of the drive 7, door leaf roll 9 can be unwound, so that door leaf 6 is arranged in front of door frame 1 closing the door opening, as is represented in FIG. 1. This is the closed position of the door. By operating drive 7 in the opposite direction, door leaf 6 can be pulled upwards out of the closed position represented in FIG. 1 and wound up onto door leaf roll 9, in which the opening of door frame 1 is freed, this being the opened position.

[0042] In order to press door leaf 6 in its closed position towards door frame 1 and thus to be able to place it against the latter in a force-fit manner, a pressing fixture is provided. This pressing fixture comprises a rectangular pressing frame 10, which can be moved at a distance from door frame 1 in the direction towards the latter and away from the latter, but can also be arranged fixed. This pressing frame 10 is arranged aligned with door frame 1 and overlaps or surrounds the door opening formed in door frame 1 by a distance, in such a way that door leaf 6 in the closed position is overlapped laterally by two vertical sections 11 and at the upper and lower side of frame 10 by two horizontal sections 12 and 13.

[0043] Pressing frame 10 is provided in its corner regions with bearings 14, in which spindles 15 are arranged rotatably, which engage in spindle nuts 16 arranged aligned with spindles 15 on the door frame side and together with the latter form spindle drives. At the other, in FIG. 1, outer and right-hand end of spindles 15, spur gears 17 are arranged non-rotatably on spindles 15, which, by means of a circulating toothed belt, are coupled in a mobile manner with one another and with a spur gear 19 of an electric drive device 20. Electric drive device 20 is fixed to pressing frame 10 and controlled by a central control, which controls the closing and opening process of the door. In the embodiment represented, drive device 20 directly drives a spindle 15, but it can also engage in a driving manner in toothed belt 18 at another point by means of its spur gears 9.

[0044] Pressing frame 10 is mounted with axial play by means of spindles 15. Spindles 15 are in each case surrounded by a helical spring 21, which is arranged pretensioned between spindle nut 16 and the side of pressing frame 10 pointing towards door frame 1, in such a way that springs 21 exerts a restoring force on the pressing frame in the restoring or opening direction.

[0045] In order that door leaf 6, independently of the roll position and therefore the thickness of door leaf roll 9, always runs in the region of door frame 1 parallel to the latter, a guide roll 22 is mounted freely rotatable at the upper side of pressing frame 10, which guide roll feeds the door leaf from door leaf roll 9 towards door frame 1.

[0046] The function of the previously described door is as follows. Proceeding from an opened position, in which door leaf 6 is arranged with its lower side roughly in the region of guide roll 22 and moreover is rolled up on door leaf roll 9, drive 7 is activated in the closing direction in order to close the door, as a result of which shaft 5 carrying the door leaf roll is moved in the unwinding direction, until the door leaf is located in its position closing door frame 1 to the exterior, i.e. on the right-hand side in FIG. 1, in which position vertical frame parts 2 and the components connecting the latter transversely at the lower side and at the upper side of door leaf 6 are overlapped. In this position (closed position), electric drive device 20 is activated, in such a way that the four spindles 15 mounted rotatably in the corner regions of pressing frame 10 are driven synchronously, so that the latter rotate into spindle nuts 16 and move pressing frame 10 in the direction towards door frame 1, until the latter abuts against the door frame 1 including the lateral door leaf parts, the lower end and an upper cross-section and, with further operation of the drive, abuts on this frame 1 with an applied force and therefore seals door leaf 6 with respect to door frame 1. In this position, the door is not only closed, but also sealed off.

[0047] For the subsequent opening, electric drive device 20 is first operated in the opposite direction, as a result of which spindles 15 rotate in the opposite direction, pressing frame 10 is thus moved away from door frame 1, helical springs 21 serving to adjust the required restoring forces.

[0048] As soon as pressing frame 10 is so far removed from door frame 1 that door leaf 6 is freely mobile between door frame 1 and pressing frame 10, drive 7 is again activated, this time in the opposite direction, after which door leaf 6 is wound up until the end of door leaf 6 is located in the region of the upper transverse section of pressing frame 10 or of upper horizontal frame part 3 of door frame 1.

[0049] In the embodiment represented and described above, pressing frame 10 is constituted closed, which is particularly advantageous with regard to the pressing forces thus created and the tightness of door leaf 6 with respect to door frame I. This means however that both pressing frame 10 and also door frame 1 comprise a lower horizontal support. The latter, when the door is to be suitable for driving through, have to be integrated into the floor, or the pressing frame has to be constituted U-shaped, i.e. constituted without lower horizontal section 13. Toothed belt 18 then has to be guided correspondingly U-shaped, since the lower transverse connection is absent. The lower horizontal frame part of the door frame is then also absent. In the closed position, door leaf 3 is then fixed only at three sides, at the bottom side it merely abuts in a sealing manner.

[0050] In the variant of embodiment described with the aid of FIGS. 4 to 7, the basic structure of the door is identical, i.e. a door 1 with vertical frame parts 2 and a horizontal support 3 comprises two supports 4 projecting horizontally in the room, which support a shaft 5 for winding up a door leaf 6. A drive 7 is arranged at one side of shaft 5, at the other side a braking device 8. Door leaf 6 closing door frame 1 is wound up to form a door leaf roll 9 on shaft 5 in the opened position. In the closed position, in which door leaf 6 closes door frame 1, the latter can be pressed by a pressing fame 10a against door frame 1 in order to guarantee a tight fit.

[0051] Pressing frame 10a is constituted in the same way as the previously described one, it comprises vertical sections 11a and a horizontal section 12a connecting the latter at the upper side and can be moved in the direction towards door frame 1 and away from the latter. For this purpose, a total of four bolts 23 fitted on the door frame side essentially in the corner regions of pressing frame 10a are provided, which are guided through holes 24 provided in pressing frame 10a. Bolts 23 are surrounded by helical springs 25, which abut with the one side against pressing frame 10a and their other side abuts against a disc 26, which is fastened to the free end of respective bolt 23. Springs 25 are pretensioned, so that their spring force acts on pressing frame 10a.

[0052] In this embodiment, the pressing force of pressing frame 10a is created by the spring force of helical springs 25. A drive is thus required here, which moves pressing frame 10a away from door frame 1 so that door leaf 6 can move freely between pressing frame 10a and door frame 1. The drive mechanism required for this is formed by drive 7 of shaft 5 via door leaf roll 9 to door leaf 6.

[0053] The door leaf, as shown in particular in FIG. 4, is guided at the upper side of pressing frame 10a by means of guide roll 22. Since door leaf roll 9 sits not only above pressing frame 10a, but also at a vertical distance therefrom, and to be precise in the direction away from door frame 1, a force component arises on guide roll 22 during the winding up of door leaf 6, said force component being directed away from door frame 1, i.e. in the opposite direction to the pressing direction of helical screws 25, apart from the upwardly directed component for pulling up door leaf 6. This force component is used in this embodiment in order to move pressing frame 10a against the force of helical screws 25 in the direction away from door frame 1.

[0054] Since this force component is available only during the opening and diminishes with an increasing degree of opening, a locking mechanism 27 is provided between door frame 1 and pressing frame 10a. This locking mechanism consists of two locking levers 28 arranged in a swivellable manner on door frame 1 at the side of door leaf 6 and two pegs 29 projecting laterally on door leaf 6, which can enter into an active connection with these locking levers 28.

[0055] Locking levers 28 are arranged not only in a swivellable manner on the door frame side, but pretensioned in the direction of their locking position by a helical screw 30 surrounding them. Each helical screw is on the one hand supported on the end of the respective locking lever and abuts on the other hand against a link 31, which is constituted such that each locking lever 28 is automatically brought into its essentially horizontal locking position by the pressing force of helical springs 30, which is represented in FIG. 6. In this position, the free lever end supports pressing frame 10a so far that door leaf 6 can be moved with play between pressing frame 10a and door frame 1. This position represented in FIG. 6 essentially serves for the low-friction opening and closing of the door. Since pressing frame 10a is guided by bolts 23 and can only move linearly, locking levers 28 arranged on both sides of door leaf 6 lock the free space formed between door frame 1 and pressing frame 10a over the entire area of the frame.

[0056] Pegs 29 are arranged on door leaf 6 in such a way that the latter, during closing of door leaf 6, i.e. during the unwinding of door leaf 6 into its closed position, collide with locking levers 28 when the lower end of door leaf 6 has almost reached the closing end position. Locking levers 28 are then swiveled downwards into the position represented in FIG. 7 by pegs 29 against the spring force of helical springs 30, in which position the locking effect is removed and pressing frame 10a is pressed by the force of helical springs 25.

[0057] In the opposite direction for the opening, drive 7 is activated, as a result of which shaft 5 with door leaf 6 partially wound up thereon in the open position exerts a torque, which is transmitted to door leaf 6 in the form of a tensile force. A force component acting in the horizontal direction thus also arises on guide roll 22, which force component pulls pressing frame 10a out of the pressing-on position into the opened position spaced apart, in which door leaf 6 can be freely moved. In this position, locking levers 28 automatically swivel back into the locking position represented in FIG. 6 due to the spring force of helical springs 30, in which the pressing mechanism of helical screws 25 is blocked, as soon as the door leaf is pulled up so far that pegs 29 release locking levers 28.

[0058] In the example of embodiment represented, pressing frame 10a can be moved only linearly. Instead of the linear mobility, pressing frame 10a can be linked in a swivellable manner at the underside of the frame, preferably underneath the floor, so that the guides between bolts 23 and holes 24 can then be subject to play.

[0059] While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.

LIST OF REFERENCE NUMBERS

[0060] 1 door frame [0061] 2 vertical frame parts [0062] 3 horizontal support of door frame [0063] 4 horizontal support of door frame projecting into the room [0064] 5 shaft [0065] 6 door leaf [0066] 7 drive [0067] 8 braking device [0068] 9 door leaf roll [0069] 10, 10a pressing frames [0070] 11, 11a vertical sections of the pressing frame [0071] 12, 12a horizontal upper section of the pressing frame [0072] 13 horizontal lower section of the pressing frame [0073] 14 bearing in the pressing frame [0074] 15 spindles [0075] 16 spindle nuts in the door frame [0076] 17 spur gears at the end of spindles 15 [0077] 18 circulating toothed belt [0078] 19 spur gear of the electric drive device [0079] 20 electric drive device [0080] 21 helical springs [0081] 22 guide roll [0082] 23 bolts [0083] 24 holes [0084] 25 helical screws [0085] 26 discs [0086] 27 locking mechanism [0087] 28 locking bar [0088] 29 pegs [0089] 30 helical springs [0090] 31 link