EP0930416A2 - Roller shutter - Google Patents

Abstract

The top edge (2) of the flexible curtain-wall (1) is fixed to the top of the opening to be closed. The lifting shaft (4) is situated halfway up the curtain-wall and the lower (6) and upper (7) parts below and above the lifting shaft. The operating mechanism (5) positioned at the top edge of the curtain-wall has a main shaft (8) whose two ends (9,10) are joined to the ends of wind-up drive belts (11,12). The operating mechanism has an electric motor (15) preferably connected by a drive chain or toothed belt with the main shaft.

Description

The invention relates to a roller shutter door an opening, in particular an outer door of a Building, with a flexible curtain that matches his upper edge area in the area of the upper limit the opening to be closed is fastened with one intended for winding the curtain, in essentially halfway up the curtain connected lifting shaft, for simultaneous Winding up the one located below the lifting shaft Lower part and that located above the lifting shaft Upper part of the curtain on the lifting shaft by means of a Actuation mechanism rotatable and on the top Edge area of the curtain To be slidably arranged is.

Such a roller door is for example from the US 3,306,344. In the known lifting gate Lift shaft driven by an electric motor, the together with a gearbox directly on the lifting shaft is attached and with when opening the lifting gate moved together with the lifting shaft. That when turning the The counter shaft torque occurring on the motor is from a rod added, on the one hand with the Engine and on the other hand with a special Support device is connected. Because the rod is rigid is, must also that when you press the Rolling gates changing distance between the motor and the support device by further mechanical Funds are balanced.

The movable motor of the well-known roller shutter has the Disadvantage that for the compensation of torque and Distance a high amount of construction work got to. In addition, a moving motor requires flexibility Power lines or open tracks that often Give cause for malfunctions and also out Security reasons should be avoided. Finally, the moving motor contributes Enlargement of the mass to be moved, whereby the Energy expenditure required for actuation enlarged and the maximum Actuation speed is reduced.

Another, known from US 3,398,779 Rolling gate, the curtain is just put on one Lift shaft wound up over the entire height of the opening to be closed must be moved. Of the Electric motor is permanently installed here. The mechanical The actuation movement is transmitted by means of an endless chain that extends from the motor shaft starting from the entire height of the roller shutter extends, and one in a guide rail guided gearbox, which is connected to the lifting shaft and moves up and down with it, the torque occurring from the Guide rail is included.

Although the electric motor is rigidly attached here, requires the one intended to drive the lifting shaft Mechanics still require a lot of construction work, which drives up manufacturing costs and brings an increased susceptibility to failure. Here the moving gear contributes to the enlargement of the moving mass, with the mentioned negative Effects on energy expenditure and Operating speed.

It is therefore the object of the present invention to specify a rolling gate that is small in construction Effort allows quick and safe actuation.

The object is achieved in that the mentioned actuation mechanism one in the upper Edge area of the curtain is essentially horizontal across the width of the closable Opening, rotatably and drivable main shaft, which in their two End areas with the one ends of windable drive belts connected in a rotationally fixed manner are that the other ends of the drive belts with the two end regions of the lifting shaft each non-rotatably connected and in the closed state of the Roller shutters are partially wound up.

In the subject matter of the invention are for the transfer Drive movement only a few mechanical elements required, which is also not together with the Hübwelle must be moved. Because of the simple Not only the manufacturing, Installation and maintenance costs are reduced, but also a safe and trouble-free operation guaranteed. The function of a gearbox is taken over by the drive belts depending on desired ratio with or reduction different number of turns on the Hübwelle and the main shaft can be wound up. The Weight of the lifting shaft together with the wound Sections and the bottom of the curtain will mainly raised by the drive belts that on the Hübwelle at the same time that for winding generate the required torque.

In contrast to those from the prior art known arrangements is in the inventive Roller shutter relieves the top of the curtain. Furthermore is a much smaller torque to wind up required because on the one hand only a minor one Total mass must be moved and on the other hand only a small part of the total moving mass by means of the rotation of the lifting shaft is raised. The Relief of the curtain top and the reduction of the required torque contribute to Extending the life span and reducing the Susceptibility to interference and still allow lighter design and higher Operating speed.

In a preferred embodiment of the roller shutter, the actuating mechanism comprises an electric motor for Main shaft drive, preferably via a Drive chain or a toothed belt with the Main shaft is connected. Apart from that The convenience of an electric drive has built-in electric motor has the advantage that it no flexible supply lines required. The Power transmission via drive chain or In contrast to a rigid toothed belt Transmission when connecting the main shaft directly and motor shaft, on the one hand an adjustment of the Translation and on the other hand a compact design, where the motor shaft is shifted parallel to the Main shaft is arranged.

For a roller shutter of average size achieved particularly good operating characteristics if the drive belts in the closed state of the Roller shutters on the main shaft up to one Winding diameter from 95 to 100 mm and on the Lift shaft up to a winding diameter of 60 to 80 mm are wound up.

The driving force and thus the strength of Drive motor and mechanics can be advantageous be reduced if the actuation mechanism a Relief belt that has one end on an axial projection of the main shaft, preferably on their facing away from the motor drive Side, rotatably arranged and in the closed Condition of the roller shutter is so wound that one between the other end of the relief belt and a fixed point arranged tension spring Main shaft preloaded in the opening direction. Furthermore can this arrangement for an emergency opening of the Rolling gates used in the event of motor drive failure become. It is best to choose the preload so large that the curtain can be raised halfway up through the Force of the tension spring can be opened.

To make the mechanics even safer and more reliable it is proposed that the Actuating mechanism includes guide rails that are right and left side of the curtain in the extend substantially vertically and that the lifting shaft with axially protruding guide pins is provided, which engage in the guide rails, so that the Hübwelle in the guide rails in fixed in the horizontal direction and in the vertical Direction is rotatable and guided. Especially when opening or closing very quickly of the roller shutter ensures that none unwanted movements of the curtain and the Hübwelle occur. In addition, the horizontal one Fixation for a better stability of the closed roller shutters with wind load.

When using the curtain in its lower edge area an essentially horizontally arranged bar is provided, its lower edge always remains straight and aligned smoothly. By the weight of the bar the lower part of the curtain in particular kept stretched condition and closing the Improved roller shutters on the lower edge.

If the bar is also axially laterally protruding guide pins provided in the Engage guide rails so that the bar in the Guide rails fixed in the horizontal direction and is guided displaceably in the vertical direction the tight closing of the roller shutter and its Stability further improved with wind loads. Furthermore, this measure ensures, just like the guidance of the lifting shaft that when opening quickly or closing the roller door no undesirable Movements of the lower part of the curtain and the bar occur.

In a development of the invention, it is proposed that that in the area of the two narrow sides of the roller shutter one each in the vertical direction over the height of the roller shutter extending, in horizontal section arranged essentially L-shaped sheet profile is, being at right angles to the curtain extending leg of the sheet profile with the respective guide rail and one parallel to the Curtain extending leg with one on the Curtain angled brush strip is provided. The sheet metal profile partially covers the drive mechanism and protects them from the harmful effects of Outside. The brush strip is used for improvement sealing with the roller shutter closed. Through the Integration of the guide rail in the sheet profile the manufacturing effort is reduced. The entire Sheet metal profile with both legs and the Guide rail can be made in one piece from a simple Sheet to be bent.

To improve operational safety is provided that the lifting shaft on the inside and Outside of the curtain each with a lengthways the fender extending fender enclosed is, the fenders on the top and Bottom only one slot each Clear passage of the curtain, and that the two Fenders through two to the right and left of the curtain arranged connecting parts connected to each other are, the connecting parts on the Hübwelle are rotatably mounted. The fenders are moving together with the Hübwelle and cover them so that not accidentally when opening the roller shutter any objects, fingers or other Body parts with the curtain on the lifting shaft can be wrapped.

The fenders are designed to a certain extent compared to their normal position, in which the between slots formed up and down point, be rotatable so that the slots of the when winding the curtain onto the lifting shaft position of the Can follow the curtain. When opening very quickly or closing the roller shutter there is a risk that the fenders are wider than necessary twist.

To avoid excessive rotation of the Fenders are therefore recommended that at least one of the connecting parts a laterally in the axial Has protruding rotation limiting part, the one in a side of the curtain intervenes. The guide leaves the rotation limiting part so much play that the rotation of the fenders in permissible range is not hindered.

To avoid electrical charging of the Fenders due to the friction on the moving curtain serves the measure that at least via a rotatable mounting of the connecting parts electrical connection between the fenders and the lifting shaft.

In an embodiment of the invention it is provided that those on the curtain, upper and lower Mudguard edges each with curves are provided, which are preferably low-friction Have sliding layer. This measure contributes to Reduction of wear and thus to Reliability and security of the operation of the Roller shutters at. In addition, it is used for actuation required energy expenditure is further reduced and the operating speed increases.

The measure that the connecting parts with the Fenders by screwed into the curves Screws are connected with regard to one simple and inexpensive design especially advantageous because the already existing curves the mudguards used for the screw connection without additional mudguards Holes or bends would have to be made.

In a preferred embodiment, the Hübwelle two half-shells on the middle height placed on the front and back of the curtain and screwed together. This connection between Hübwelle and curtain is low Work effort particularly easy to carry out. It is not required the top and bottom of the To attach the curtain separately to the Hübwelle. Of the The curtain doesn't even have to be divided.

On the one hand, the design of the half shells for to keep the pretty wave simple and on the other hand the Functions of the winding of the drive belts and the Guiding the lifting shaft in the side Ensuring guide rails becomes a Further development of the invention recommended, in which the both side ends of the half shells with each an end piece are rotatably connected, on which the respective drive belt can be wound up and one axially projecting guide pin.

Operational safety can still be improved by placing the guide pins of the end pieces on their free ends each with a lock washer are provided. If one of the two drive belts tears, the lifting shaft can at most on this side slide down until the lock washer from the inside against the guide rail and a prevents further slipping.

In an embodiment of the invention it is provided that at least one end piece with an actuating disc is provided for actuating a limit switch. Because of the simple design options of These are particularly suitable for end pieces additional measures.

For the same reason, it is also advantageous if the Connecting parts of the fenders on the end pieces are rotatably mounted.

By the measure that the lower bar of the Curtain has two half-shells, the lower Edge area on the front and back of the Curtains are put on and screwed together, you don't just get the one related to the corresponding design of the lifting shaft mentioned advantage of a simple type of fastening, but also a smaller number of different ones Components and thus lower storage costs, because the same half shells for both the lifting shaft and can also be used for the bar.

To guide the bar in the guide rails too ensure without reducing the shape of the half-shells To complicate unnecessarily, it is recommended that the both side ends of the half shells with each are provided with an axially projecting guide pin.

In a further development of the invention, that in the floor area on the right and left sides of the roller shutter two automatic wind protection devices are arranged, each one in its center stored, essentially rectangular Have double lever by means of a tension spring is so biased that its upper leg in horizontal position the respective guide pin the bottom bar with the curtain closed presses down, but when the curtain opens, of the Guide pin over a dead center of the spring force in a vertical position can be brought in, by the tension spring remains fixed, and that the now horizontal, lower leg with closing Curtain using the lowering guide pin can be folded down so that the guide pin after the dead center of the spring force is exceeded upper leg is pressed down. A roller shutter equipped in this way also lasts stronger wind load tight. Especially that Lower part of the curtain can no longer through the wind be opened because the bar by the spring force is pressed firmly to the ground.

Further advantages and details of the invention result from the following description of a Embodiment with reference to the drawings.

Figur 1

eine perspektivische Seitenansicht eines erfindungsgemäßen Rolltores im geschlossenen Zustand, mit teilweise abgenommener Abdeckung;

Figur 2

eine vergrößerte Teilansicht desselben Rolltores gemäß Linie A-A von Figur 1;

Figur 3

eine Teilansicht wie in Figur 2 des halb geöffneten Rolltores;

Figur 4

eine stark vergrößerte teilweise Draufsicht in Richtung B von Figur 1;

Figur 5

eine stark vergrößerte perspektivische Darstellung eines Details C aus Figur 1;

Figur 6

einen stark vergrößerten Schnitt gemäß Linie D-D von Figur 1;

Figur 7

eine stark vergrößerte perspektivische Darstellung eines Details E aus Figur 1 bei geschlossenem Rolltor;

Figur 8

eine Darstellung wie Figur 7, jedoch bei geöffnetem Rolltor.

The figures show in detail:

Figure 1

a side perspective view of a roller shutter door according to the invention in the closed state, with the cover partially removed;

Figure 2

an enlarged partial view of the same roller shutter along line AA of Figure 1;

Figure 3

a partial view as in Figure 2 of the half-open roller door;

Figure 4

a greatly enlarged partial plan view in the direction B of Figure 1;

Figure 5

a greatly enlarged perspective view of a detail C of Figure 1;

Figure 6

a greatly enlarged section along line DD of Figure 1;

Figure 7

a greatly enlarged perspective view of a detail E from Figure 1 with the roller shutter closed;

Figure 8

a representation like Figure 7, but with the roller shutter open.

The invention shown in the figures Roller shutter is one for closing the opening Exterior door of a building determined. How best to recognizes in Figures 1 to 3 it has one flexible curtain 1, which is at its upper edge 2 by means of a holding plate attached to the building 3 is suspended. The curtain 1 is halfway up with a Hübwelle 4 firmly connected by means of an actuating mechanism 5 is rotatable. When turning the Hübwelle 4 winds this at the same time arranged above her upper part 7 and that lower part 6 of the curtain arranged below. The Hübwelle 4 must necessarily on the coiled top 7 along up on the to move the top edge 2 of the curtain (Figure 3).

The actuating mechanism 5 has a horizontal arranged main shaft 8, which in the area of upper edge 2 of the curtain 1 rotatable on the building is stored and spread over the width of the closing opening extends. The main shaft 8 can be driven by an electric motor 15, the via a drive chain 16 with the main shaft 8 connected is.

To connect the drive between the main shaft 8 and the Hübwelle 4 are two drive belts 11, 12th provided with at their respective upper ends the right and left end portions 9, 10 of the Main shaft 8 rotatably connected and partially on these are wound up. The respective lower ends of the two drive belts 11, 12 are non-rotatable with the right and left end regions 13, 14 of the Hübwelle 4th connected and partially wound on this. Around on the one hand enough belt length for unwinding To have available and on the other hand a reasonable one Gear ratio between the Rotational speeds of the main shaft 8 and To get Hübwelle 4, it turned out to be special turned out favorably when the drive belts 11, 12th in the closed state of the roller shutter on the Main shaft 8 up to a wank diameter of 95 up to 100 mm and on the Hübwelle 4 up to one Winding diameters of 60 to 80 mm are wound.

To open the roller door, the electric motor 15 turned on, the drive chain 16 the Main shaft 8 rotates in the opening direction 21. Here the drive belts 11, 12 on the main shaft 8 wound up and pull the Hübwelle 4 up. There the drive belts 11, 12 are not exactly above the Attacking the shaft axis arises on the lifting shaft 4 Torque that rotates the lifting shaft 4. It tilts first the perpendicular to one through the Lines of contact of the curtain 1 with the lifting shaft 4 imaginary plane from the plane in FIG. 2 shown position 65 in the shown in Figure 3 Position 66. Then the torque mentioned causes that the curtain 1 is wound on the Hübwelle 4 becomes. If the lifting shaft 4 the area of the upper Edge 2 of the curtain 1 is reached, a will not Limit switch shown, it can be off For safety reasons, several can also be provided actuated and thus the electric motor 15th turned off. That is also in this position Lower part 6 of the curtain 1 completely on the Hübwelle 4 wound so that the door opening to Passage or for the passage of a vehicle in the full amount is free. Closing the curtain 1 takes place accordingly in the opposite direction.

To relieve the electric motor 16, the Actuating mechanism 5 on a relief belt 17, the one at the top with one on the top Electric motor 15 side facing away from the roller shutter arranged axial projection 18 of the main shaft 8 non-rotatably connected and partially on them is wound up. At its other end is the Relief belt 17 at an upper end of a Tension spring 20 attached, the lower end of one fixed point 19 is anchored in the area of the floor. As can best be seen in Figures 2 and 3, shortens the tension spring 20 when opening the Rolling doors, wherein the relief belt 17 from axial projection 18 of the main shaft 8 unwinds and this drives in the direction of rotation 21. In this way can the curtain 1 without motor support in an emergency up to approximately the height shown in FIG. 3 be driven upwards.

The actuating mechanism 5 also comprises two Guide rails 22, 23, which are right and left extend vertically next to the curtain 1. In these Guide rails 22, 23 grip two guide pins 24, 25 a, which is in the axial direction laterally from the Stand out lifting shaft 4. In this way the Lift shaft 4 guided in the guide rails 22, 23, so that they rotate and free in the vertical direction can move, but fixed in the horizontal direction is. Especially when there is a wind load guided Hübwelle 4 always in their intended Held position in which the curtain 1 the Door opening tightly closed. To a tight one Ensure closing also in the floor area the curtain 1 in its lower edge area with a horizontal bar 26 equipped, which also with lateral, axially projecting guide pins 27, 28 is provided. These guide pins 26, 27 engage in the guide rails 22, 23 and fix the bar 26 against displacement in horizontal direction while the free Mobility in the vertical direction is retained.

Furthermore, the roller door has two sheet profiles 29, 30 on the two narrow sides right and left are arranged and spread over the entire height of the Rolling gates extend. How best to figure 4 recognizes the sheet profiles 29, 30 in cross section L-shaped and each have a right angle to the curtain 1 arranged legs 31, 32, which also the respective guide rail 22, 23 comprises, and a leg arranged parallel to the curtain 1 33, 34, which is provided with a brush strip 35, 36 is. The brush strip 35, 36 is towards the curtain 1 angled and touches it, causing the Sealing of the roller door is improved. In addition to the Sheet profiles 29, 30 are two cover plates 37, 38 provided, which is also over the entire Extend the height of the roller shutter and cover the laterally arranged parts of the actuating mechanism 5 complete. The cover plates 37, 38 were for the Representation of Figure 1 from its installation position removed to the arrangement of the ones behind it Show components.

To protect against accidental winding of It is objects or parts of the body such as fingers Stroke shaft 4 surrounded by two fenders 39, 40, those on the front and back of the Curtain 1 are arranged and over it extend the entire width. Preferably there are Mudguards 39, 40 made of aluminum to the at Actuation of the roller door to be moved mass if possible to keep low. The invention includes regardless of the name chosen "Fenders" made of plastic or other suitable Materials.

As can best be seen in Figure 6, the two fenders 39, 40 on the top and Bottom only one slot 41, 42 for Passage of the curtain 1 free, so that access to the Lift shaft 4 is blocked for thicker objects. Of the But curtain 1 can pass through the slots 41, 42 slide through it when it hits the Hübwelle 4 should be wound up. He usually does at the edges of the slots 41, 42 delimiting the Fit fenders 39, 40 and slide along. Around to facilitate the sliding of the curtain 1, these are Edges formed as curves 46 which with a low-friction sliding layer 47 made of Teflon or a other suitable plastic material are provided.

As you can best see in Figure 5, the two are Fenders 39, 40 by means of two right and left of the curtain 1 arranged connecting parts 43, 44 connected with each other, with pivot bearings 45 on the Hübwelle 4 are rotatably mounted. This arrangement enables the lifting shaft 4 to be rotated for winding of the curtain 1 without the on the lifting shaft 4th stored fenders 39, 40 would have to turn. The Rotary bearings 45 are electrically conductive, so that one by friction of the curtain 1 to the Fenders 39, 40 and the sliding layers 47 occurring electrical charging via the earthed Hübwelle 4 is derived safely. The on the edges the fenders 39, 40 formed curves 46 also serve to screw in screws 48 for fastening the connecting parts 43, 44 the fenders 39, 40.

As can best be seen in Figure 5, this is one thing Connecting part 43 with a rotation limiting part provided that from a on the connecting part 43 attached, angled lever arm 49 and one on Lever arm 49 attached roller 50. How to best seen in Figure 4, the roller 50 engages a guide 51 arranged on the side of the curtain 1 one by the space between the one Leg 33 of the sheet profile 29 and the other Leg 31 arranged guide rail 22 is formed becomes. This space limits the movement of the Roll 50, so that the fenders 39, 40 freely within a limited angular range Hubwelle 4 can turn, but a rollover is prevented.

As can best be seen in Figure 6, the Lifting shaft 4 in a simple way from two half shells 52, 53 composed of the medium height on the Front and back of the curtain 1 put on and are screwed together. The curtain 1 will clamped between the two half-shells 52, 53 and kept safe. How best to use the characters 4 and 5 recognizes the end regions of the lifting shaft 4 formed as end pieces 13, 14 which with the lateral ends of the half shells 52, 53 rotatably are connected. The end pieces 13, 14 each include the pivot bearing 45 for the rotatable mounting of the Connecting parts 43, 44, a winding section 54 for Winding the drive belts 11, 12, one Actuating disc 55 for actuating one limit switch shown, a guide pin 24, 25th for engagement in one of the guide rails 22, 23 and one at the free end of the guide pin 24, 25 arranged locking washer 56, the one Slipping out of the guide pin 24, 25 from the respective guide rail 22, 23 prevented, if once a drive belt 11, 12 should tear.

Just like the Hübwelle 4, there is also the lower one Strip 26 of the curtain 1 out of two not here individual illustrated, half-shells, in the lower Edge area on the front and back of the curtain are attached and screwed together. This Half-shells are on the two lateral ends of the Provide bar 26 with guide pins 27, 28, in the guide rails 22, 23 intervention.

The roller shutter is in the floor area on the right and left side also with two wind protection devices 57, 58 equipped, one of which is shown in FIGS. 7 and 8 is shown in more detail. A double lever 59 exists from an upper leg 60 and a lower one Leg 61, which are approximately at right angles to each other are arranged. Where the two legs 60, 61 connected together is the double lever rotatably mounted. With the axis of rotation of the double lever 59 a tension arm 63 is also connected in a rotationally fixed manner, at which in turn one end of a tension spring 62 attacks. The other end of the tension spring 62 is on fixed to a fixed point 64 of the roller shutter.

The angular position of the tension arm 63 relative to the two legs 60, 61 is chosen so that the Double lever 59 when the upper position is horizontal Leg 60 in one and horizontal Position of the lower leg 61 in the other Direction of rotation is biased, being in one intermediate angular position with respect to Bias occurs a dead center.

Figure 7 shows the situation with the curtain closed 1. The upper leg 60 is horizontal and is like this biased that he was down on the guide pin 27 presses, the bar 26 holds the floor and the Curtain 1 pulls smooth even in strong winds. Will the Open curtain 1, the guide pin 27 presses the upper leg 60 up until dead center is reached. Then the double lever 59 folds under the action of the tension spring 62 automatically until the upper leg 60 strikes the sheet metal wall 33 and the lower leg 61 in the horizontal position stop. This situation is shown in Figure 8. It is also by the tension spring 62nd stabilized.

If the curtain 1 is closed again, it lowers the bar 26 to the guide pin 27 with its own weight a little from above horizontally standing lower leg 61 presses and this pivots down until the dead center is reached is. Now the double lever 59 folds back into his other stable position and press with the upper leg 60 the guide pin 27 down, wherein the wind-secured state shown in Figure 7 is restored.

The wind protection devices 57, 58 described are working on both sides fully automatically in the same way without special energy supply or operation.

Reference list

1

curtain

2nd

edge

3rd

Bracket

4th

Lifting shaft

5

Actuation mechanism

6

Lower part

7

Top

8th

Main shaft

9

End area

10th

End area

11

Drive belt

12th

Drive belt

13

End area, end piece

14

End area, end piece

15

Electric motor

16

Drive chain

17th

Relief belt

18th

axial projection

19th

fixed point

20th

Tension spring

21

Opening direction

22

Guide rail

23

Guide rail

24th

Guide pin

25th

Guide pin

26

strip

27

Guide pin

28

Guide pin

29

Sheet profile

30th

Sheet profile

31

leg

32

leg

33

leg

34

leg

35

Brush strip

36

Brush strip

37

Cover plate

38

Cover plate

39

Fender

40

Fender

41

slot

42

slot

43

Connecting part

44

Connecting part

45

Pivot bearing

46

Rounding

47

Sliding layer

48

screw

49

Lever arm

50

role

51

guide

52

Half shell

53

Half shell

54

Winding section

55

Actuating disc

56

Lock washer

57

Wind protection

58

Wind protection

59

Double lever

60

leg

61

leg

62

Tension spring

63

Arm

64

fixed point

65

position

66

position

Claims (21)

Roller door for closing an opening, in particular an outer door of a building, with a flexible curtain (1), which is fastened with its upper edge region (2) in the region of the upper limit of the opening to be closed, with one for winding up the curtain (1) , essentially halfway up the lifting shaft (4) connected to the curtain (1), which for simultaneously winding up the lower part (6) located below the lifting shaft (4) and the upper part (7) of the curtain (4) located above the Hübwelle (4) 1) on the lifting shaft (4) by means of an actuating mechanism (5) and is arranged to be displaceable on the upper edge region (2) of the curtain (1), characterized in that said actuating mechanism (5) has an upper edge region (2) of the curtain (1) has a horizontally extending, rotatably mounted and drivable main shaft (8) which extends transversely across the width of the opening to be closed and which in its two end regions ichen (9, 10) are each connected to the one end of windable drive belts (11, 12) so that the other ends of the drive belts (11, 12) are connected to the two end regions of the lifting shaft (4) in a rotationally fixed manner and in the closed position Condition of the roller shutter are partially wound up. Roller door according to claim 1, characterized in that the actuating mechanism (5) comprises an electric motor (15) for driving the main shaft (8), which is preferably connected to the main shaft (8) via a drive chain (16) or a toothed belt. Roller door according to claim 1 or 2, characterized in that the drive belts (11, 12) in the closed state of the roller door on the main shaft (8) up to a winding diameter of 95 to 100 mm and on the lifting shaft (4) up to a winding diameter of 60 to 80 mm are wound. Roller door according to one of the preceding claims, characterized in that the actuating mechanism (5) has a relief belt (17) which is arranged with its one end on an axial projection (18) of the main shaft (8), preferably on its side facing away from the motor drive and is wound up in the closed state of the roller shutter in such a way that a tension spring (20) arranged between the other end of the relief belt (17) and a fixed point (19) prestresses the main shaft (8) in the opening direction (21). Roller door according to one of the preceding claims , characterized in that the actuating mechanism (5) comprises guide rails (22, 23) which extend substantially vertically to the right and left of the side next to the curtain (1) and that the sliding shaft (4) is axially laterally protruding guide pins (24, 25) are provided which engage in the guide rails (22, 23) so that the lifting shaft (4) in the guide rails (22, 23) is fixed in the horizontal direction and is displaceable and rotatable in the vertical direction. Rolling door according to one of the preceding claims, characterized in that the curtain (1) is provided in its lower edge region with an essentially horizontally arranged strip (26). Roller door according to claim 6, characterized in that the bar (26) is provided with laterally axially projecting guide pins (27, 28) which engage in the guide rails (22, 23), so that the bar (26) in the guide rails (22 , 23) is fixed in the horizontal direction and is displaceably guided in the vertical direction. Rolling door according to one of claims 5 to 7, characterized in that in the region of the two narrow sides of the rolling door there is arranged in each case an essentially L-shaped sheet metal profile (29, 30) which extends in the vertical direction over the height of the rolling door and has a horizontal section. A leg (31, 32) of the sheet metal profile (29, 30) extending at right angles to the curtain (1) with the respective guide rail (22, 23) and a leg (33, 34) extending parallel to the curtain (1) is provided with a brush strip (35, 36) angled towards the curtain (1). Roller door according to one of the preceding claims, characterized in that the lifting shaft (4) is enclosed on the inside and outside of the curtain (1) with a protective plate (39, 40) extending along the lifting shaft (4), the protective plates (39, 40) leave only one slot (41, 42) on the top and bottom for the passage of the curtain (1), and that the two fenders (39, 40) are separated by two on the right and left of the curtain (1) arranged connecting parts (43, 44) are connected to one another, the connecting parts (43, 44) being rotatably mounted on the lifting shaft (4). Rolling door according to Claim 9, characterized in that at least one of the connecting parts (43) has a rotary limiting part (49, 50) which projects laterally in the axial direction and which engages in a guide (51) arranged on the side of the curtain (1). Roller door according to claim 9 or 10, characterized in that there is an electrical connection between the protective plates (39, 40) and the lifting shaft (4) at least via a rotatable mounting (45) of the connecting parts (43, 44). Roller door according to one of claims 9 to 11, characterized in that the upper and lower edges of the mudguards (39, 40) abutting the curtain (1) are each provided with curves (46) which preferably have a low-friction sliding layer (47). exhibit. Roller door according to claim 12, characterized in that the connecting parts (43, 44) are connected to the protective plates (39, 40) by screws (48) screwed into the roundings (46). Roller door according to one of the preceding claims, characterized in that the lifting shaft (4) has two half-shells (52, 53) which are placed in the middle of the front and back of the curtain (1) and screwed together. Roller door according to claim 14, characterized in that the two lateral ends of the half-shells (52, 53) are each connected in a rotationally fixed manner to an end piece (13, 14) on which the respective drive belt (11, 12) can be wound, and the one projecting axially Guide pin (24, 25). Roller door according to claim 15, characterized in that the guide pins (24, 25) of the end pieces (13, 14) are each provided with a locking washer (56) at their free ends. Roller door according to one of claims 15 or 16, characterized in that at least one end piece (13, 14) is provided with an actuating disc (55) for actuating a limit switch. Roller door according to one of claims 15 to 17, characterized in that the connecting parts (43, 44) of the protective plates (39, 40) are rotatably mounted on the end pieces (13, 14). Roller door according to one of claims 6 to 18, characterized in that the lower strip (26) of the curtain (1) has two half-shells which are placed on the front and rear of the curtain (1) and screwed together in the lower edge region. Roller door according to claim 19, characterized in that the two lateral ends of the half-shells are each provided with an axially projecting guide pin (27, 28). Roller door according to claim 20, characterized in that two automatic wind protection devices (57, 58) are arranged in the floor area on the right and left sides of the roller door, each of which has a substantially right-angled double lever (59) mounted in its center, which is operated by means of a Tension spring (62) is biased such that its upper leg (60) in the horizontal position presses the respective guide pin (27, 28) of the lower bar (26) down when the curtain (1) is closed, but when the curtain (1) opens of the guide pin (27, 28) can be brought into a vertical position via a dead center of the spring force, in which it remains fixed by the tension spring (62), and that the now horizontal, lower leg (61) with the curtain (1) closing can be folded down by means of the lowering guide pin (27, 28), so that the guide pin (27, 28) is pushed downward from the upper leg (60) after the dead center of the spring force has been exceeded was pressed.

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