EP2925947B1 - Roller shutter having a door leaf in the form of a flexible curtain - Google Patents

Description

The invention relates to a roller door, in particular a high-speed roller door, according to the preamble of claim 1.

Rolling doors with a flexible curtain made of PVC o. The like. Have long been used in practice. They have proven to be excellent to wind-tight completion, for. to produce between individual rooms in larger halls or the like. Compared to door arrangements with door leaves made of lamellae or sections, such roller doors have the advantage that they have a lower weight. They can therefore be operated at very high speeds.

Such roller doors usually have a winding shaft on which the curtain is wound up when opening. In this case, lateral edges of the curtain are guided in associated lateral guides to produce here also a substantially windproof closure. Since a curtain in itself has no inherent rigidity, conventional roller doors are usually provided with a rigid end plate at the leading edge of the door leaf. This is usually designed as a metal profile and stiffens the curtain transverse to the direction of movement of the door leaf. Typically, this end plate extends into the area of the lateral guides and has a predetermined weight, so that the curtain is stretched in the direction of movement over its entire width between the end element on the one hand and the winding shaft on the other hand.

Since such a curtain is usually attached directly to the winding shaft, the driving force to open the roll-up door directly from the winding shaft on the Curtain introduced. To close such roller doors, the winding shaft is operated in the opposite direction so that it releases the curtain. Due to the dead weight of the end shield then the curtain automatically wound from the winding shaft and closes the door opening.

In order to enable a reliable and fast closing of such roller doors, it is also known to assist the process by means of tensile forces on the end plate. Examples of such roller doors can be found in the DE 34 11 664 A1 and the DE 43 24 641 A1 , Here prestressed tension cables are provided by means of spring force or weights, which act on both sides of the end plate and bias it in the door closing direction. In addition to a support of the closing process is thereby further achieved that the curtain is stretched even better in the direction of movement of the roll-up door. He is then less prone to bulging under wind load or the like. As a result, a reliable completion of the door opening is achieved. With such systems also disturbances such as a tilting of the door leaf in the course of the closing process can be better avoided.

Since provided with such rolling gates gate openings are usually frequently frequented, and in light of the quite considerable movement speeds such door leaves, but here there is a considerable risk of collisions, for example, with the door opening passing people or forklifts, etc. To counter this it is, for example known to install optical security systems on such rolling doors. Torlichtgittersysteme have proven particularly useful here. The installation of these systems is associated with an effort. In addition, these are usually only suitable to detect obstacles that are already in the plane of movement of the door leaf. On the other hand, side-facing forklifts or the like on a collision course are not or only by means of additional safety systems in adjacent areas for gate opening detected. Such collisions often lead in practice to considerable damage both to the door leaf, ie to the curtain and the end plate, as well as to the impacting object. Therefore, systems have been developed which allow a deflection of the end plate from the Torblattebene in the event of collision.

An example of this can be found in the EP 0 675 261 A1 or the DE 44 14 524 A1 , Here, the end plate is guided on both sides by means of slides in the lateral guides that it is trapped in the direction of movement of the door leaf, but can pivot transversely to this. In addition, the end plate is here on both sides in such a way connected with tension cables, that even with a swinging of the end plate a train connection between the door drive and the end plate is maintained. The tension cables are here resiliently biased, whereby a corresponding movement path is made possible. They support a provision of the end plate in its normal position. As far as there is no collision case, these tensioning cables serve both as in the already explained construction to tension the curtain in the direction of movement of the door leaf. In the event of a collision, it is in view of the mass of the rigid end plate but also in the roller door according to the EP 0 675 261 A1 it is also possible for there to be considerable damage to the end shield and / or the person or the object being hit.

An alternative embodiment for a deflectable end plate was from the DE 295 01048 U1 known. This document discloses a roll-up door with a flexible curtain and a rigid end plate in the form of a lower beam. At the lateral ends of the end plate in each case a guide element is coupled, which can be folded away laterally. This is a emergence of the guide element from the side guides and accordingly pivoting of the end plate from the Torblattebene possible.

Another example of a deflectable end plate is already mentioned in the above DE 43 24 641 A1 given. The present here, rigidly trained, but in a certain extent elastically deformable end plate is connected in the region of the lateral guides each with a guide arm. For this purpose, an approach on each guide arm is loosely inserted into a recess on the associated lateral end of the end plate. The guide arm engages on the one hand the pull rope for tensioning the curtain in the closing direction and on the other hand a band, which is in alignment in the same axis of action as the pull rope, but is oppositely oriented and biased. By means of this, the guide arm is moved like the curtain. The tape is also wound on the winding shaft. In the case of collision, the limited possible elastic deformation of the otherwise rigid end plate is sufficient so that the approaches can emerge from the recesses on the end plate. Then the hangings can swing out of the door leaf level with the graduation sign. However, there is still a considerable risk of damage for this and for affected persons due to the inherently rigid design of the end shield, etc. Moreover, the loose plug connection of this known gate arrangement is an indeterminate system, which is problematic especially in a high-speed operation. It can not be ruled out here that the connection is released due to flapping movements, etc.

Another systematic approach for a collision protection device on a roller door is from the EP 2 402 543 A2 or the DE 20 2010 007 949 U1 known. This roller shutter whose curtain is motor-driven on a winding shaft in a conventional manner or unwound, has no end plate of a rigid metal profile or the like, but a closing element, which is elastic in itself and thus in the plane of the curtain and transverse thereto deformable executed. This makes it possible to avoid obstacles and thus avoid damage. For this purpose, the closing element has a joint body and / or a chain, which can also be prestressed by means of an elastic traction means. In this case, the joint body or the chain on a certain weight, so that the closing element automatically assumes a stretched position under the influence of gravity. As an additional element for tensioning the end element here a traction means such as a rubber cord or a rubber band is used, whereby at the same time the door curtain is stretched in the direction of movement of the door leaf. When closing the roller door, the weight of the joint body or the chain on the end element by gravity acts supportive. Also arranged on both sides, elastic traction means promote the closing process.

At the same time, one of the traction means also serves as an indicator for the presence of a collision case in that it cooperates with a sensor which detects the position of the traction means in the region of the terminating element. If there is a collision case, the orientation of the traction means changes, so that here the sensor can deliver a corresponding signal.

A disadvantage of the roller door according to the EP 2 402 543 A2 is, however, that the joint body or the chain must have a very considerable weight so that they can fulfill the desired function for tensioning the curtain or to support the closing movement of the same. Due to the mass thus given these elements continue to pose a risk to the leading edge of the roll-up doors persons or objects, so that it still can cause injury or damage. Since the closing element is not rigid here, there is also an increased risk that it will tilt in the course of the closing operation of the door leaf.

From the DE 698 31 080 T2 Finally, a further embodiment of a roll-up door with an elastically formed end element has become known. In order to provide a reliable conclusion of the door opening with closed roller door here, this terminating element is laterally coupled with carriages, which are guided in lateral guides. In addition, a strap is provided within the closure element. In this way, the end element is tensioned by corresponding lateral force components in the transverse direction.

In the case of collision, a release of the closing element of the side carriage assemblies is possible because these elements are held together only by magnetic force. The closing element and partial areas of the curtain can then swing out of the door leaf plane, adapt to impinging obstacles or elastically deform around them. In this way, damage to the closure element as well as the subject matter, etc. is avoided to some extent.

However, it requires a high degree of precision to adjust the size of the magnetic force so that on the one hand a sufficiently stable connection is given, so as to ensure the required for the opening and closing cohesion of the components, and that on the other hand, the terminating element in time from the side Carriage arrangements are released before damage occurs.

This known roller shutter is driven in a conventional manner by the operation of the winding shaft, on which the curtain is wound up when the roller shutter is opened. In order to support the closing of the curtain, a ballast tube is also arranged at the foremost end of the leading edge, which is filled with a deformable material such as sand. This ballast tube provides a weight at the bottom of the lifting gate shown, which not only supports the closing process itself, but also biases the curtain in the vertical direction. However, this additional weight limits the opening speed.

Since the ballast tube according to the DE 698 31 080 T2 Thus, a considerable weight must have, the mass associated with it in the event of a collision, however, similar to a conventional end profile, a danger to the object hit, etc. Again, injuries to persons or damage to forklifts, products, etc. are possible.

The present invention is based on EP 0 675 261 A1 as the closest prior art.

The invention is therefore based on the object to improve a generic roller door such that this represents a reduced risk for persons or objects in the collision trap with high reliability during operation.

This object is achieved by a roller shutter with the features of claim 1.

According to the invention was thus recognized for the first time that the driving force for closing the door opening at such a roller shutter, although it is formed with a flexible curtain with a Behangabschnitt and an elastic, so in itself freely elastically deformable end element, can also act on the closing element. Thus, it is now advantageously possible to dispense with components with a large mass in the final element. This considerably reduces the risk of injury to persons who may have been hit by the closing element. Likewise, the risk of damage to goods and / or implements in the event of a collision decreases. In addition, the end element is less susceptible to damage even then.

This is further supported by the fact that the end element is executed due to its elastic Ausgestaltungsweise in the plane of the curtain and also transversely thereto damage-free deformable and therefore adapt flexibly to obstacles or can deform around them. This is not achieved with a conventional end shield, even though it should be somewhat flexible. In addition, the closing element of the roll-up door according to the invention by means of the applied transverse force components after removal of the obstacle, etc. without damage return to its extended normal position, d. H. there are no lasting changes in shape.

At the same time, however, it is also achieved that the closing operation of the rolling door can be carried out particularly reliably. The pulling force component for closing the door leaf provided on the roller door according to the invention thus represents an active drive by means of which this movement can be controlled more precisely than via the passively acting systems with the weight in the prior art.

In addition, the roller shutter according to the invention is then independent of a specific orientation, so that it need not necessarily be arranged as a lifting door with an upright orientation as in the prior art, but also, for example, allows an oblique or horizontal termination between rooms or different areas.

Furthermore, however, a reliable tensioning of the elastically formed end element is achieved with the roller door according to the invention. This is therefore in the normal case with respect to the stabilization of the leading edge of the blind functionally equivalent effect with a rigid end shield of a metal profile, but without having its disadvantages in terms of weight and the risk of injury or damage.

Another advantage of the rolling door according to the invention is that it can be used with high reliability and is characterized by longevity.

Thus, it is provided for the first time in the rolling door according to the invention to use the driving force of the drive at the same time for driving and tensioning the curtain in the direction of movement as well as for clamping transversely thereto in the region of the leading edge. The roller door according to the invention can in this case have a surprisingly simple construction. It is thus hardly prone to failure and also inexpensive to provide. In many applications, a waiver of additional safety devices such as Torlichtgittersysteme or the like is also possible.

Advantageous developments of the rolling door according to the invention are the subject of the dependent claims.

Thus, the drive of the roller door in the region of the lateral guides each have a pulling member which transmits the driving force to the closing element of the door leaf. This allows a particularly simple structural design of the drive system and is characterized by a high reliability. Such traction devices have long been used on roller doors and have proven very successful.

It is also advantageous if the tension member is formed in two parts with a drive part and a tensile force transmission part, wherein the drive part is designed to transmit the driving force as an endless element, and wherein the Traction transmission part transmits the transmitted with the drive part driving force to the end element of the door leaf. Thus, the movement of the roller door according to the invention can be controlled even more precisely. In addition, an even more precise adjustment of the transverse force component or the tensile component is possible. Furthermore, in this way highly identical components can be used for roller doors with different dimensions.

Here, the drive part of the tension member may be formed at least in a partial section as a toothed belt, chain or the like. With such elements, a positive connection for the tension member can be provided, whereby a particularly reliable operation of the roll-up door is made possible.

Moreover, it is also possible that the tensile force transmission part of the tension member is designed as a pull rope. As a result, a transfer of the tensile forces can be permanently achieved in a proven manner.

If the drive has a weight compensation device with a tension spring and / or a weight, the construction of the roller door according to the invention is further simplified. Then you can dispense with a separately designed counterbalance regardless of the drive. In addition, the roller shutter according to the invention then receives a particularly compact and simple design.

It is of further advantage if the drive has a pulley arrangement over which the tension member is guided. Thus, the drive arrangement can be advantageously controlled so that with a small movement path on the drive element such as a pinion on the engine a certain Torblattbewegung is achieved. In addition, this also allows the acting forces to be set advantageously.

According to a further advantageous embodiment, it is possible that the closing element of the door leaf is coupled on both sides with a carriage which moves together with the closing element guided in the lateral guides and carries a deflection device, via which the pulling member in each case from the lateral guides to the end element is deflected out. Thus, the tension member is aligned with respect to the end element, that it provides a particularly suitable division of the driving force in the lateral force component or the tensile force component. It is particularly advantageous in this case that the angle with which the pulling member acts on the closing element, regardless of the closed state of the door leaf is always the same by the closing element with moving carriage. Thus, the same tensile component is accordingly applied to the closing element of the door leaf over the entire closing process. Likewise, in each liner during the closing operation, the same lateral force component is provided for tensioning the closure member. As a result, an even more reliable operation of the roller door according to the invention is possible.

If the carriages are guided by means of rollers in the lateral guides, they can be guided with low friction and therefore have a high life expectancy. In addition, the reliability of the roller door according to the invention further increases.

It is further advantageous if the closing element of the door leaf is detachably coupled to the respective slide on both sides in such a way that it can be deflected out of the door leaf plane in the event of a collision. Then also the roller door according to the invention provides a kind of active collision protection device and not only provides a passive protection device by the elastically formed end element. The risk of damage to the rolling door according to the invention or of affected objects, etc. in the course of a collision is thereby significantly reduced. However, since the two-sided tension members are still connected to the end element of the door leaf, this is not fully released and also traceable by means of the traction elements in its normal position.

It is advantageous if the slides are each connected via a latching connection with side edge elements of the closure element. Such a locking connection can be canceled in the event of a collision non-destructive and then re-manufacture. This further reduces the risk of damage to the terminating element in the event of a collision. In addition, it is possible with simple means that Rolling gate in its operating state to move back. Furthermore, such a latching connection is a reliable coupling way, which permanently enables trouble-free normal operation of the rolling door according to the invention.

It has also proved to be advantageous if the latching connection is configured such that the side edge elements of the closure element automatically engage in the carriage when the closing element is deflected in the course of a closing movement of the door leaf. This is possible in a very short time and with little effort a restoration of the normal state of the rolling door according to the invention after a collision trap. In particular, it is provided for the first time within the scope of the invention to perform this return to the normal position not in the course of an opening movement of the door leaf, but a closing movement. This results in the further advantage that in unfavorable cases, if necessary, even a manual intervention is possible to restore the locking connection between the closing element and the side carriage, since the return operation in an easily accessible area, usually on the bottom side.

It is a further advantage if at least one carriage has a sensor device which detects the coupling state between the carriage and the terminating element. In this way, a particularly reliable detection of a collision case is possible. It is irrelevant whether the coupling state has been canceled by a lateral emergence of the closure element from the Torblattebene or by an elastic deformation of the closing element in the Torblattebene. By the sensor device, a corresponding fault routine can be promptly and reliably initiated. This is usually at least that the roller door opens and thus provides a greater clearance height in the door opening.

Fig. 1

einen Ausschnitt aus einer schematischen Vorderansicht eines erfindungsgemäßen Rolltores gemäß einer ersten Ausführungsform, wobei das Zargengehäuse der seitlichen Führung zur Veranschaulichung weggelassen ist;

Fig. 2

eine im Schnitt gehaltene Draufsicht auf einen Seitenrandbereich des Rolltores gemäß Fig. 1;

Fig. 3

eine perspektivische Detailansicht eines Antriebssystems des Rolltores gemäß der ersten Ausführungsform;

Fig. 4

eine Detailansicht im bodenseitigen Abschlussbereich am Rolltor gemäß der ersten Ausführungsform;

Fig. 5a

eine perspektivische Ansicht eines Rolltores gemäß einer zweiten Ausführungsform in einem geöffneten Zustand, wobei Zargenteile zur Veranschaulichung weggelassen sind;

Fig. 5b

eine perspektivische Ansicht von schräg oben auf das Rolltor gemäß der zweiten Ausführungsform in der geöffneten Stellung;

Fig. 6a

eine perspektivische Ansicht des Rolltores gemäß der zweiten Ausführungsform in geschlossenem Zustand;

Fig. 6b

eine perspektivische Ansicht von schräg oben auf das Rolltor gemäß der zweiten Ausführungsform in geschlossenem Zustand;

Fig. 7

eine im Schnitt gehaltene Draufsicht auf einen Seitenrandbereich des Rolltores gemäß der zweiten Ausführungsform;

Fig. 8

einen Schnitt durch den Seitenrandbereich des Rolltores gemäß der zweiten Ausführungsform bei geschlossenem Rolltor am unteren Ende der Seitenzarge;

Fig. 9

eine perspektivische Ansicht des Rolltores gemäß der zweiten Ausführungsform bei ausgelenktem Abschlusselement;

Fig. 10

eine perspektivische Ansicht ähnlich Fig. 9 im Zuge einer Rückstellung des ausgelenkten Abschlusselements in den normalen Betriebszustand; und

Fig. 11

eine perspektivische Ansicht ähnlich zu Fig. 9 und 10, wobei das Abschlusselement in seine Normalposition zurückgesetzt ist.

The invention will be explained in more detail in exemplary embodiments with reference to the figures of the drawing. It shows:

Fig. 1

a detail of a schematic front view of a rolling shutter according to the invention according to a first embodiment, wherein the frame housing of the lateral guide is omitted for illustration;

Fig. 2

a sectional plan view of a side edge portion of the roller shutter according to Fig. 1 ;

Fig. 3

a detailed perspective view of a drive system of the roll-up door according to the first embodiment;

Fig. 4

a detailed view in the bottom end portion of the roller door according to the first embodiment;

Fig. 5a

a perspective view of a roll-up door according to a second embodiment in an open state, wherein the frame parts are omitted for illustration;

Fig. 5b

a perspective view obliquely from above on the roller shutter according to the second embodiment in the open position;

Fig. 6a

a perspective view of the roll-up door according to the second embodiment in the closed state;

Fig. 6b

a perspective view obliquely from above on the roller shutter according to the second embodiment in the closed state;

Fig. 7

a sectional plan view of a side edge portion of the roll-up door according to the second embodiment;

Fig. 8

a section through the side edge portion of the roll-up door according to the second embodiment with the roller door closed at the bottom of the side frame;

Fig. 9

a perspective view of the roll-up door according to the second embodiment with deflected end element;

Fig. 10

a perspective view similar Fig. 9 in the course of a provision of the deflected end element in the normal operating condition; and

Fig. 11

a perspective view similar to Fig. 9 and 10 , wherein the closing element is reset to its normal position.

In the Fig. 1 to 4 a first embodiment of a roll-up door 100 is shown.

This has a door leaf 110, which essentially consists of a flexible curtain with a hanging section 111 and a closing element 112 arranged at its leading edge. The leading edge is the edge region or the edge on the hanging section 111, which lies in front when closing the door leaf 110 in the direction of movement.

The roller door 100, which is designed here as a lifting door, further comprises a winding shaft 120, on which the door leaf 110 is wound when opening the roll-up door 100. In addition, the roller door 100 includes lateral guides 130, one of which in Fig. 2 is shown, and in which lateral edges of the door leaf 110 are received. Finally, the roller door 100 also includes a drive 140, which generates a driving force for driving the door leaf 110.

The Fig. 2 As can be seen from this, it has a Zargenkasten 131 which forms an inlet funnel 132 in the region of the associated lateral edge of the door leaf 110, which opens into a guide gap 133. In the exemplary embodiment shown, the inlet funnel 132 has an opening angle of approximately 100 °. The guide gap 133 is selected so that the door leaf 110 can be guided with play therein.

As shown in Fig. 3 the drive 140 has a motor 141, which is coupled via a transmission gear 142 with the winding shaft 120. By the motor 141, the winding shaft 120 is set in rotary motion. Depending on the direction of rotation, the door leaf 110 is wound onto the winding shaft 120 or unwound therefrom.

On the winding shaft 120, a drive pinion 143, which drives a pulling member 144, is also arranged laterally outside the winding region for the hanging section 111. This pulling member 144 serves to apply a driving force for closing the door leaf 110 on the closing element 112. At the same time, a transverse force component is applied to the closing element 112 with which it is tensioned transversely between the two lateral guides 130.

The closing element 112. is not configured as a rigid component, but designed to be elastic. It is therefore freely deformable per se both in the plane of the curtain and transversely thereto and can accordingly adapt to obstacles or elastically deform around them without damaging or permanent changes in shape occurring on the closing element 112. In the example shown, the closing element 112 is formed by a pocket formed of a flexible material at the leading edge, such as the hanging material, into which a lighter, more flexible and cushioning body, such as e.g. Foam or the like is inserted. Without the transverse force components applied by the pulling member 144 on both sides, the closing element 112 would be flexible or deformable even at low lateral forces and could not produce a reliable closure in the bottom area.

To transmit the driving force, the tension member 144 has a toothed belt 145, which interacts positively with the drive pinion 143. In addition, the pulling member 144 has a pull cable 146, which receives the driving force of the toothed belt 145 and further transmits. In this case, a weight 147 is provided, on which on one side of the toothed belt 145 and on the other side of the pull cable 146th is attached. The drive 140 further includes a tension spring 148, which is fixed on the bottom side and cooperates with the pull cable 146.

Furthermore, the drive 140 still has a buffer container 149 for the toothed belt 145. The toothed belt 145 is fixed in this buffer container 149 with the interposition of a spring arrangement, not shown. The buffer container 149 is also adapted to accommodate a loose of the toothed belt 145 when closing the door leaf 110 in a certain frame; at a greater length of the tension-free end of the toothed belt 145, the supernatant simply overhangs laterally.

If the door leaf 110 is opened, however, the toothed belt 145 runs over the drive pinion 143 until the door leaf 110 has reached its open position. In order to mitigate here the stopping of the door leaf 110 at the upper end of the door opening, dampens the already mentioned, not shown spring in the buffer tank 149 the last portion of the movement path of the toothed belt 145th

The end of the pull cable 146 not connected to the weight 147 engages and is fastened to a side edge element 113 of the closure element 112, in particular in FIG Fig. 4 is recognizable.

The drive 140 further includes a pulley assembly 150, over which the pull cable 146 runs. For this purpose, the traction cable 146 is first guided over a deflection roller 151 at the free end of the tension spring 148, as in particular from Fig. 1 is recognizable. The pull cable 146 is then guided over a further deflection roller 152 on the weight 147. Finally, the pull cable 146 extends over a bottom-defined deflection roller 153 to the associated side edge element 113 of the closure element 112.

The operation of the roller door 100 will be explained in more detail below.

To close the roller shutter, the motor 141 is actuated to drive the winding shaft 120 for unwinding the door leaf 110. As a result, the door leaf 110 is released from the winding shaft 120.

In this case, the weight 147 is pulled upward in the direction of the winding shaft 120 via the toothed belt 145. On the other side of the drive pinion 143, the lots on the toothed belt 145 is then moved into the buffer container 149 or suspended laterally next to it.

By the movement of the weight 147 is set as Zugseil 146 under train. This then runs over the deflection rollers 151, 152 and 153 from such that it on the one hand clamps the tension spring 148 and on the other hand with the door leaf end a tensile component for closing the door leaf 110 on the closing element 112 applies. In this way, the closing movement of the door leaf 110 is supported, that is, the door leaf 110 is withdrawn from the winding shaft 120.

With continuous closing movement of the door leaf 110, the door leaf-side end of the pull cable 146 engages in an ever smaller angle relative to the footprint of the roll-up door 100 on the closing element 112, as in particular Fig. 4 is apparent. Accordingly, an ever-increasing lateral force component acts on the side edge elements 113 of the closing element 112. When the roller door 100 is closed, the pulling cable 146 is approximately at an angle of 40 ° -50 ° to the associated side edge element 113 on the closing element 112. The transverse force component present thereby is sufficient to to properly tension the end member 112 in the transverse direction between the side guides 130.

When the door leaf 110 is completely closed, the weight 147 reaches its highest position above the footprint of the roller shutter 100. Furthermore, the tension spring 148 is also maximally tensioned in this state. This ensures that the door leaf 110 opens in case of emergency, for example, in case of power failure automatically. The weight 147 and the tension spring 148 thus represent a counterweight device which actively supports an opening movement of the door leaf 110.

To open the door leaf 110, the motor 141 is driven in the opposite direction, so that the hanging section 111 is wound on the winding shaft 112. At the same time, the leading edge of the door leaf 110 is gradually released via the toothed belt 145 and the traction cable 146, so that a controlled opening movement of the door leaf 110 and a wrinkle-free winding of the same on the winding shaft 120 is made possible. As already explained above, the loose in the toothed belt 145 is thereby pulled out of the buffer container 149 until it is resiliently fastened in the buffer container 149. This spring force prevents a hard stopping of the door leaf 110 in the course of the winding process. As a result, damage to the door panel 110 can be reliably avoided. The weight 147 is then in its lowest, the footprint closest standing position and the tension spring 148 is largely relaxed.

The door leaf 110 of the roll-up door 100 is thus actively pulled by the pulling action on the pull cable 146 of the pulling member 144 in its closed position, the pull cable 146 for this purpose provides a directed substantially in the direction of movement of the door leaf tension component. At the same time, however, the pull cable 146 also provides a lateral force component on the end member 112 by which it is tensioned transversely between the side guides 130.

In the event of a collision, however, the elastically formed closing element 112 is able to deform, despite the tension caused by the transverse force components, and thus to avoid damage to the closing element 112 or the impacting object. In this case, the tension spring 148 releases a certain length of pull cable 146 in a predetermined manner in accordance with the acting force in a predetermined manner, so that the closure element 112 can execute a corresponding deformation. The force acting on the closing element 112 in the event of such a collision is thus resiliently received by the tension spring 148 via the pulley arrangement.

In addition, the tension spring 148 acts in the course of the opening or closing movement also compensating in terms of the one hand by the winding shaft 120 and on the other hand forces applied by the pulling member 144 on the door leaf 110. This avoids excessive wear of the components of the drive 140 and the door leaf 110.

For the sake of completeness, it should also be noted that the above discussion has considered only one side of the roll-up door 100. The opposite side edge region is formed substantially mirror-inverted, with the exception of the motor 141 and the transmission gear 142, which are provided only on one side of the roller door 100.

In the Fig. 5 to 11 a second embodiment of the invention with reference to a roll-up door 200 is shown.

In this case, the roller door 200 in the FIGS. 5a and 5b shown in the open state while it is in the FIGS. 6a and 6b is shown in the closed state.

As can be seen from these figures, the roll-up door 200 likewise has a door leaf 210, which is configured essentially of a flexible curtain with a hanging section 211 and an elastically designed closing element 212. Furthermore, the roller door 200 includes a winding shaft 220 and side guides 230, of which only one is indicated in the figures for the purpose of illustration. Finally, the roller shutter 200 also includes a drive 240 for providing the driving force for the operation of the door leaf 210.

As in particular from Fig. 7 can be seen, each of the lateral guides 230 a Zargenkasten 231 on. This contains an inlet funnel 232, which opens into a guide gap 233, in which the door leaf 210 is received with play.

The drive 240 includes a motor 241 and a transmission gear 242, in particular in the Fig. 5b and 6b is recognizable. Thus, the winding shaft 220 is driven. On this also a drive pinion 243 is arranged, which cooperates with a pulling member 244. The tension member 244 is here in this embodiment designed in several parts and has a drive part and a tensile force transmission part. The drive member includes a timing belt 245 and a drive cable 246a. These are formed in this embodiment as an endless element, that is arranged to each other so that they can transmit a traction circumferentially. The traction transfer member includes a traction cable 246 which ultimately transmits the traction to side edge members 213 of the end member 212.

Similar to the first embodiment; is also the roller door 200, a weight 247 and a tension spring 248 arranged. The weight 247 is received between one end of the toothed belt 245 and the drive cable 246a. The drive cable 246a is finally deflected over a bottom-mounted pulley 254 and guided to a stop 255. At this stop 255, the other end of the toothed belt 245 is attached.

In an operation of the drive pinion 243 thus the toothed belt 245 is moved together with the weight 247, the drive cable 246a and the stopper 255 circumferentially over a certain path of movement.

The pull cable 246 is also attached to the weight 247. It is also guided via a pulley arrangement 250 to the side edge element 213 on the closing element 212. The pulley arrangement 250 for this purpose includes a deflection roller 251 on the tension spring 248 and a further deflection roller 252 on the weight 247 similar to the configuration in the first embodiment. The pull cable 246 is then deflected over a bottom-mounted deflection roller 253 such that it can finally engage the side edge elements 213 of the closure element 212.

However, in contrast to the first embodiment, the pull cable 246 extends on both sides via a slide 260, which is guided in the region of the associated lateral guide 230. The carriage 260 has for this purpose rollers 261, by means of which it is supported adjacent to the guide gap 233 within the frame box 231 and is moved in a rolling motion. The carriage 260 further comprises a deflection section 262, here in the form of a roller, by means of which the traction cable 246 is deflected in such a way that it under a certain, in all closed positions of the door leaf 210 same angle on the side edge element 213 of the closing element 212 engages. For this purpose, the carriage 260 is moved with the closing element 212 with, when the door leaf 210 is moved.

The carriage 260 is connected to the end element 212 for this purpose. As shown in Fig. 8 For example, each side edge element 213 of the end element 212 has a latching hook 214, which engages positively in a latching nose 263 on the slide 260. This connection is solvable in the event of a collision.

So that an unlocking of the closing element 212 can be detected by a carriage 260, a sensor element 265 is further arranged on the carriage 260. This cooperates with a sensor part 215 on a side edge element 213. If the relative position of the sensor part 215 changes relative to the sensor element 265, it is possible to detect a swiveling of the closure element 212 out of the door leaf plane and / or a deformation of the closure element 212 in the door leaf plane and initiate a fault routine or the like. The sensor, consisting of the sensor element 265 and the sensor part 215, is designed here as a magnetic switch.

The operation of the roll-up door 200 is basically similar to that of the roll-up door 100 according to the first embodiment. To close the door leaf 210, a drive force is also exerted on the drive pinion 243 by the motor 241 via the transmission gear 242 such that the toothed belt 245 pulls the weight 247 in the direction of the winding shaft 220. Thus, the drive cable 246a is tightened, which in turn pulls the stopper 255 down and thus keeps it by the peripheral configuration with the timing belt 245 this under tension. At the same time, the door leaf 210 is released from the winding shaft 220.

With the displacement of the weight 247, the pull cable 246 is further tightened. About the pulley assembly 250 while the tension spring 248 is stretched and the tensile force of the pull cable 246 on the carriage 260 on the end element 212th transfer. As a result, a tensile force component for closing the door leaf 210 is applied to this.

To open the door leaf 210, the motor 241 is driven in the opposite direction, so that the door leaf 210 is wound onto the winding shaft 220. At the same time, the toothed belt 245 is driven in a direction in which the weight 247 can be lowered toward the footprint of the roll-up door 200. Accordingly, also relaxes the tension spring 248, and the pulley assembly 250 is the Zugseil 246 such a lot given that this allows the pulling up of the leading edge of the door leaf 210. When the door leaf 210 is in its upper position, i. has reached the fully open position, the stopper 255 meets a corresponding frame-side counterpart, thus preventing a winding of the door leaf 210 beyond a predetermined point. The stopper 255 is in this case resiliently biased, so that there is no abrupt stopping of the door leaf here.

As already explained above, the deflection section 262 on the respective carriage 260 causes the pull cable 246 to always engage at the same angle on the side edge element 213 of the closure element 212. The ratio of the size of the transverse force component to the tensile force component therefore remains the same in all closed positions of the door leaf 210. The size of the transverse force component and the tensile component increases in each case with progressive approach to the closed position of the door leaf 210 due to the increasing bias of the tension spring 248. However, the leading edge of the door leaf 210 with the closing element 212 disposed thereon is stretched in all positions of the door leaf 210.

Similarly as in the first embodiment, the configuration of the rolling gate 200 also allows emergency opening in the event that, for example, the power supply fails. Then, the door leaf 210 opens by itself due to the mass of the weight 247 and the bias of the tension spring 248th

While it was possible for the door leaf in the first embodiment to emerge from the side guides in the event of a collision, the roller door 200 allows a center section of the closure element 212 to be pivoted out of the door leaf plane in the event of a collision. Then the in Fig. 8 shown latching connection between the side edge elements 213 and the respectively associated carriage 260 repealed. In this case, the latching hook 214 is disengaged from the locking lug 263. This state is in Fig. 9 shown. At the same time, however, the connection of the pull cord 246 and the end member 212 is maintained. This facilitates the restoration of the latching connection between the end element 212 and the slide 260. In the case of the roller door 200, this takes place during the closing of the door leaf 210.

If the latching connection between the carriage 260 and the closing element 212 is canceled, the carriage 260 no longer performs any movement together with the door leaf 210. It thus remains substantially at the lower end of the associated lateral guide 230 stand. Now, if the slightly opened door leaf 210 is closed and thus lowered onto the carriage 260, then the two-sided locking hooks 214 on the closing element 212 into abutment with a respective guide bevel 264 on the slide 260 and slide down from one another until they respectively engage in the locking lugs 263 again. These processes are in the Fig. 10 and 11 shown. This then the locking connection between the carriage 260 and the end member 212 is restored.

To supplement this is that the angle of attack of the pull cable 246 on the side edge member 213 when the detent connection is canceled is another than in the normal Bertriebszustand. Then, the pull cord 246 engages at a larger angle to the footprint of the roll-up door 200 on the side edge member 213, so that an increased tensile force in Torschließrichtung is provided. This facilitates the operation for restoring the latching connection between the side edge member 213 and the respective carriage 260.

In the case of a collision, it is also possible here, due to the elastic properties of the closing element 212 and the tension spring 248, a Lose am Pull rope 246 produce, so that on the one hand, the closing element 212 can swing out of the Torblattebene and on the other hand, an elastic deformation of the closing element 212 in the Torblattebene and also across this is made possible. This damage to the closing element 212 can be particularly reliably avoided. In addition, the risk of damage to incident objects and the risk of injury to persons involved in such a collision is reduced.

As in particular from Fig. 7 can be seen, the locking lug 263 on the carriage 260 has a shape which is complementary to the inlet funnel 232 of the lateral guides 230 configured. As a result, the carriage 260 can be particularly well on the associated Zargenkasten 231 lead. Also, the latching hook 214 on the side edge element 213 has on the side facing thereto a corresponding configuration matching the inlet funnel 232, so that thereby the threading of the closure element 212 is facilitated in the event of a collision. In other words, the inlet funnel 232, the snap hook 214 when reinserted into the latch 263 side such that the restoration of this locking connection is particularly reliable possible. Thus, a quick return of the roller door 200 is possible in its normal operating state after a collision case.

As in the first embodiment, the roller door 200 in the figures is explained in detail only with reference to a side edge area. It is understood that the configuration in the region of the other lateral guide is substantially mirror-inverted.

The invention allows, in addition to the illustrated embodiments, further design approaches.

Thus, in some applications, the weight 147 or 247 can be dispensed with. This is particularly the case when the tension spring 148 or 248 provides a sufficient restoring force for an emergency opening of the roller door 100 or 200, or such emergency opening function is not required.

On the other hand, it is also possible to dispense with the tension spring 148 and 248 in certain applications. Then, a corresponding biasing effect due to the influence of gravity on the weight 147 or 247 can be achieved, or it is dispensed with such a function.

Furthermore, it is not absolutely necessary to provide a pulley arrangement 150 or 250. In principle, it would also be possible to produce a direct operative connection between the drive pinion via the toothed belt and the traction cable on the closing element 112 or 212. Conveniently, this could be provided at a suitable point in this train a spring-elastic length compensation for the tension member.

The tension member 144 or 244 may also have a tension band instead of a toothed belt or a chain, which may be e.g. is wound in the region of the winding shaft 120 and 220, respectively.

As can be seen from the illustrated embodiments, the closing element of the door leaf on both sides can also be detachably coupled to the respective slide such that it emerges from this connection in the event of a collision, without leaving the door leaf level. This is the case, for example, when the door leaf is lowered to an obstacle when closing. By the resulting deformation of the end element in the Torblattebene then solves the connection to the respective carriage.

The connection between the carriage 260 and the end element 212 can also be done in a different way than via a latching connection. So here, for example, a cohesion can be produced by magnetic forces. Alternatively, it is also possible to produce a correspondingly predetermined releasable connection by means of shear pins or the like.

The restoration of the connection between the closing element 212 and the associated carriage with a swung-out closing element 212 can also take place in another way and elsewhere in the path of movement of the door leaf 210. For example, this is also possible at the upper end of the lateral guides 230 adjacent to the winding shaft.

Furthermore, the sensor device with the sensor element 265 and the sensor part 215 can also be dispensed with if such an automatic detection of a collision case does not appear necessary.

Instead of the magnetic switch described, any other type of sensor can be used to detect a collision case.

The deflection section 262 can also be designed in the form of a sliding guide or the like instead of the illustrated roller.

The two illustrated embodiments each show roller doors in the form of lifting gates. However, other orientations of the door leaf are possible, such as inclined or horizontally oriented door leaves.

Claims (13)

1. A rolling gate (100; 200), in particular a high-speed rolling gate, comprising:

   a door leaf (110; 210) in the form of a flexible curtain,

   lateral guides (130; 230) in which lateral edges of the door leaf (110; 210) are received, and

   a drive (140; 240) which generates a driving force for driving the door leaf (110; 210),

   wherein the door leaf (110; 210) comprises a terminating element (112; 212) on a forward edge, and

   wherein the driving force of the drive (140; 240) engages on the terminating element (112; 212) of the door leaf (110; 210) and thus provides laterally applied transverse force components at the terminating element (112; 212) and a tension force component substantially directed in the movement direction of the door leaf (110; 210) for closing the door leaf (110; 210),

   characterized in that

   the terminating element (112; 212) is elastically designed and tensioned between the lateral guides (130; 230) by means of laterally applied transverse force components.
2. The rolling gate according to claim 1, characterized in that the drive (140; 240) of the rolling gate (100; 200) comprises a respective traction element (144; 244) in the region of the lateral guides (130; 230) which transfers the driving force to the terminating element (112; 212) of the door leaf (110; 210).
3. The rolling gate according to claim 2, characterized in that the traction element (244) is designed in two-part form with a driving part and a tension force transferring part, wherein the driving part is designed as an endless element for transferring the driving force, and wherein the tension force transferring part transfers the force transferred with the driving part to the terminating element (212) of the door leaf (210).
4. The rolling gate according to claim 3, characterized in that the driving part of the traction element (244) is formed as a toothed belt (245) or a chain at least in a partial section.
5. The rolling gate according to claims 3 or 4, characterized in that the tension force transferring part of the traction element (244) is formed as a traction rope (246).
6. The rolling gate according to any of claims 1 to 5, characterized in that the drive (140; 240) comprises a weight balancing means with a tension spring (148; 248) and/or a weight (147; 247).
7. The rolling gate according to any of claims 2 to 6, characterized in that the drive (140; 240) comprises a pulley arrangement (150; 250) over which the traction element (144; 244) is guided.
8. The rolling gate according to any of claims 2 to 7, characterized in that the terminating element (212) of the door leaf (210) is coupled on both sides with a carriage (260) moving in a guided manner along with the terminating element (212) in the lateral guides (230) and carrying a deflecting means (262) by which the traction element (244) is deflectable from the region of the lateral guides (230) to the terminating element (212).
9. The rolling gate according to claim 8, characterized in that the carriages (260) are guided in the lateral guides (230) by means of rolls (261).
10. The rolling gate according to claims 8 or 9, characterized in that the terminating element (212) of the door leaf (210) is detachably coupled on both sides with the respective carriage (260) such that it is deflectable from the plane of the door leaf in cases of collision.
11. The rolling gate according to any of claims 8 to 10, characterized in that the carriages (260) are each connected with lateral edge elements (213) of the terminating element (210) by means of a snapping connection.
12. The rolling gate according to claim 11, characterized in that the snapping connection is formed such that the lateral edge elements (213) of the terminating element (212), if the terminating element (212) is deflected, automatically snap into the carriages (260) in the course of a closing movement of the door leaf (210).
13. The rolling gate according to any of claims 8 to 12, characterized in that a sensor device (215, 265) is arranged on at least one carriage (260), said sensor device (215, 265) detecting the coupling state between the carriage (260) and the terminating element (212).

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