EP1225292A2 - Door - Google Patents

Abstract

In the case of a door with a door leaf which is movable between a closed position in which it is oriented approximately vertically and an open position in which it is oriented approximately horizontally, preferably overhead, which has a plurality of leaves arranged one behind the other in its direction of movement and perpendicular to the door leaf Hinges having articulated axes with articulated axes, interconnected door leaf elements, a guide rail arrangement for guiding the door leaf movement with at least one guide rail which transitions over an arcuate section into an approximately horizontal and approximately parallel to the open position of the door leaf, approximately vertically and approximately parallel to the closed position of the door leaf Second leaf section extending, a traction device coupled to the door leaf with which a pulling force exerting the door leaf from the closed position into the open position is exerted on the door leaf that, and which in the closed position has approximately parallel to the first guide rail section, the first section, which merges via a section encircling a deflection element into a second section approximately parallel to the second guide rail section, and optionally a weight compensation device with which the door leaf at least in the If the closed position is pushed in the direction of the open position, a further development is proposed in which an additional pretensioning device is provided, with which the section of the traction element encircling the deflection element can be tensioned if, during the movement of the door leaf, a relative movement between the traction means and the the closing movement occurs at the rear end of the door leaf.

Description

The invention relates to a gate with a between a closed position in which it is aligned approximately vertically and an open position in which it is, preferably overhead, is oriented approximately horizontally, movable door leaf, which has a plurality of in its direction of movement arranged one behind the other and perpendicular to the direction of movement joints with interconnected door leaf elements with extending joint axes has, a guide rail arrangement for guiding the door leaf movement with at least one guide rail, one over an arcuate Section in an approximately horizontal and approximately parallel to the open position of the door leaf the first section, approximately vertically and approximately parallel to the closed position of the door leaf has a second section coupled to the door leaf Traction device with which the door leaf from the closed position to the open position urgent tractive force can be exerted on the door leaf and in the closed position a first section running approximately parallel to the first guide rail section has, which over a section surrounding a deflection element in an approximately parallel passes to the second guide rail section extending section, the traction means with the help of the deflecting element by approximately perpendicular to the direction of movement of the Door leaf extending deflection axis is deflected, and if necessary a weight compensation device, with which the door leaf at least in the closed position towards the Open position is pushed.

Gates of this type are, for example, in the form of garage doors, factory gates or Hall gates used. The door leaf is usually the one described above Kind formed in several parts, wherein it is aligned in the closed position in a vertical plane and is housed in a frame. To open such a gate the door leaf is usually along a predetermined by the guide rail arrangement The web moves into an overhead position in which it is approximately parallel to the ground and extends perpendicular to the wall opening that can be closed with the door leaf. This opening movement is usually just like the closing movement from the open position arranged in the closed position with the door leaf on both sides and with respect to the Wall fixed guide rails of the guide rail arrangement and on the door leaf fixed and guided by the guide rails guide elements, such as Guided roles. This comes especially with devices for closing large wall openings guide rail arrangements with guide rails of the above described type of use. Such gates also referred to as sectional gates have the advantage that when they are actuated, no pivoting of the door leaf into the in front of the building to be locked with it, so that a special space-saving actuation of the door leaf is possible.

In particular with the gates explained above, in which the door leaf in the Open position upside down and roughly parallel to the floor will help the opening movement and with regard to the relevant safety regulations Usually preloading devices or weight balancing devices are used, which the door leaf at least in the closed position towards the open position push, and at least partially balance the weight of the door leaf, so to facilitate the opening movement or to prevent an uncontrolled closing movement. These biasing devices usually include a mechanical spring, such as such as a tension spring or a torsion spring, which is usually in the form of a Wire rope formed traction means attacks on the door leaf. The traction means and the Biasing device usually arranged so that the biasing device at a Closing movement from the open position to the closed position under the effect of gravity is tensioned with the help of the weight of the door leaf and with the spring tension thus generated supports the opening movement. For this purpose, the traction device expediently engages on lower edge of the door leaf so that the articulated connections between the individual Gate members are not excessively loaded during the opening movement. Much more it is possible through this arrangement that the individual gate links in the course support the opening or closing movement to each other and overall by the attached traction means are held at the bottom of the door leaf.

In the case of conventional gates for halls, warehouses or the like, so-called industrial gates, the prestressing device is formed in the form of a torsion spring, which is perpendicular to the predetermined Spring shaft extending around the track and overall above that with the gate is arranged to be closed wall opening. The torsion spring is on the one hand the rotatably mounted spring shaft and on the other hand attached to a fixed part. The traction means usually formed in the form of a wire rope is on one on one Axial end of the spring shaft attached to the cable drum rotatably connected and is in Course of the opening movement of the door leaf wound on this cable drum or in The course of the closing movement is processed.

Especially with industrial gates, the opening or Closing movement used a motor, which the rope drum and thus the spring shaft rotates around the spring axis so as to unwind the traction means from the rope drum or thereon roll up. In some cases it does not stand above the wall opening to be closed enough space to accommodate the pretensioning device and / or the drive unit to disposal. It is known that the pretensioner to solve this problem to the rear end of the guide rail arrangement facing away from the wall opening to be closed laid and the pull rope over a near the top or the edge of the wall opening adjacent the opening position can be deflected by about 90 °, so that it is between the in this embodiment cable drum arranged at the rear end of the guide rail arrangement and the deflection element approximately parallel to the upper one running parallel to the floor Guide rail section runs and in the closed position of the door leaf between the deflection element and the attachment point on the door leaf approximately parallel to the approximately in Direction of gravity running in the area of the side frames of the frame edge of the gate fixed guide rail section is arranged. When operating such Tore has shown that the traction mechanism is particularly effective when performing a closing movement often jumps off the deflecting element. On the one hand, this makes it a controlled one Closing the gate difficult, and on the other hand within the scope of the necessary later Tensioning the slack hanging after the rope jumps off the deflecting element Traction means creates a risk of injury to the users of the gate.

In view of these problems in the prior art, the object of the invention based on providing a gate of the type described in the opening paragraph which provides increased operational reliability and security offers.

According to a first aspect of the invention, this object is achieved by a Further development of known gates solved, which is characterized in that an additional, i.e. pre-tensioning device which does not match the weight balancing device, if any, is provided with which the section surrounding the deflecting element of the traction device can be tensioned if a during the movement of the door leaf Relative movement between the traction means and the rear end during the closing movement of the door leaf occurs.

This invention is based on the knowledge that in the course of the movement of the Door leaf from the open position to the closed position and vice versa a relative movement between the one coupled to the front end of the door leaf during the closing movement Traction means and the rear end of the door leaf occur during this movement can, which is due to the fact that the vertical movement of the closing movement front door leaf elements when the following door leaf elements enter the arc Section of the guide rail arrangement predominantly in a pivoting movement of these door leaf elements with respect to the following still in the horizontal area Guide rail sections arranged gate leaf elements is implemented, so that these still horizontally aligned door leaf elements when entering a door leaf element first braked in the guide rail section and then when leaving of the arcuate guide rail section are accelerated again. The in Course of the relative movement between the moving at constant speed Traction means and the rear end of the door leaf occurring negative and positive Accelerations of the door leaf (braking and accelerating) require forces that must be caught or applied by the door leaf. That leads to corresponding ones Load fluctuations of the traction device coupled to the door leaf. In the course these load fluctuations, the traction device is alternately tightened and loosened, making it difficult to reliably guide the traction device around the deflection roller, which in turn can lead to the traction device jumping off the deflection roller. this Effect is counteracted by the inventive development of the known gates, by the load fluctuations of the Traction means is counteracted by an additional biasing device.

In a particularly preferred embodiment of the invention, this is additional Biasing device coupled to the traction means, so that a simple response of the Preload device when a relative movement occurs between the traction means and the rear end of the door leaf is possible. For this purpose, the pretensioning device expediently one on the first, i.e. horizontal section of the Traction element fastened and, on the other hand, attachable to the door leaf. If this pretensioning element pushes the door leaf into the closed position when it is in contact with it, In this way, the first, i.e. horizontal section of the traction device and on the other hand the second, i.e. vertically extending section of the traction device tensioned because the traction mechanism in most cases follows that of the closing movement front end of the door leaf is coupled, so that under the action of the door leaf in the Closing position urging biasing element a voltage of the coupled to the door leaf second or vertical section of the traction means is generated.

The biasing element can be realized particularly easily if there is one has a compression spring supported on an abutment fastened to the traction means. If the rear end of the door leaf with respect to the Traction device is braked, this compression spring can be in contact with the rear end of the door leaf arrive and be excited. If the rear end of the door leaf in the course the closing movement is accelerated again after braking, the Restoring force of the compression spring is available to support this acceleration. On in this way a load change in the area of the traction means is prevented particularly reliably or reduced because the generation of the biasing force of the biasing means is immediate is coupled to the relative movement of the door leaf with respect to the traction means.

A further increase in the operational reliability of a door according to the invention can be achieved if the pretensioning device may have an abutment and comprises a support fastened to the traction means, which has at least one holding arrangement is held on the guide rail assembly. In this embodiment the invention, the guide rail arrangement is not used to guide the door leaf movement but also to guide the movement of the additional moving with the traction device Biasing device used. The the carrier on the guide rail assembly holding arrangement can hold at least one in an approximately horizontal guide rail section have recorded leadership role. It also has proved to be favorable if the holding arrangement has at least one, preferably one vertical boundary surface of the horizontally running first guide rail section has a guide element which can be applied and which prevents the carrier and / or the biasing device tilts into the first guide rail section. As above The traction device has already been explained in connection with conventional gates Expediently coupled to a drive device for moving the door leaf is designed between the closed position and the open position. Although in Within the scope of this invention, thought is also given to the use of manually operated drive devices is, it has particularly in the use of gates according to the invention in industrial Area proven to be useful if the drive device has a drive motor.

It has proven to be particularly favorable if the drive device is connected to the Coupled deflecting element and for generating a rotary movement of the deflecting element around the one that is generally approximately perpendicular to the direction of movement of the door leaf Deflection axis is operable. It has been shown that with this coupling of the drive device to the deflecting element, the weight of the in the open position in generally slightly inclined downward, when closing first or in the The closed position of the bottom door leaf element can suffice to move between the deflecting element and the point at which the traction device is attached to this door leaf element, arranged tension member section to tighten and the closing movement of the door leaf to cause corresponding actuation of the drive device. Therefore, with this Arrangement of the drive device in many cases on the provision of an otherwise necessary, additional pulling rope causing the closing movement to be dispensed with. The automatic triggering of the closing movement is described in the preferred arrangement of the drive device favors that by the Door leaf in the open position in the direction of the closed position pushing weight of the first door leaf element during this movement, only that between the deflecting element and the door leaf extending section of the traction means are tensioned must, while the rest of the traction means by the deflecting element and on it acting drive device mechanically from the tensioned under the action of gravity Section of the traction means is decoupled and separated by the weight compensation device or the additional pretensioning device can be tensioned. there is the automatic triggering of the closing movement of the door leaf when the also favored by the drive device coupled to the deflection element, that because of the automatic tension between the deflecting element and the weight compensation device or the additional biasing device arranged section of the traction device there is no need for a slack rope safety device, which would otherwise counteract the closing movement.

In the arrangement of the drive device described last, it has also been found proven to be particularly advantageous if the traction means in positive engagement with the Deflection element stands, the traction means in the form of a chain and the deflection element in Form of an associated sprocket or sprocket can be realized because of this way a particularly effective mechanical decoupling between the individual Sections of the traction device can be produced and on the other hand a slip-free Drive is possible. The provision of a slip-free drive is special desirable because such simple control of the drive by detection the rotational movement of the deflecting element is possible.

The drive device expediently has a coaxial to the deflection axis extending and rotatably connected to the deflection drive shaft. It can to transmit the drive force to the drive shaft a rotatably with the drive shaft connected transmission element, preferably in the form of a chain sprocket are used, this transmission element facing away from the closing element Outside of the guide rail can be arranged. As particularly cheap it has been found if the deflecting element in the area of the wall opening, that is in the immediate Neighboring the wall having the opening is arranged because so that the actuation element that enables manual actuation, such as a hand chain, or an emergency chain also required for engine operation in the immediate vicinity of the opening having wall can be arranged and not in the middle of the with the Locking element locked room hangs down.

As explained above, the coupling of the drive device to the Deflection element the automatic initiation of the closing movement of the door leaf when appropriate Activation of the drive device or release of the traction means favors. However, it has been shown that in this embodiment of the invention, the inertia mostly over head and horizontally aligned door leaf due to the weight of the first, at the closing movement, obliquely downwardly inclined door leaf element in some cases can not be overcome, so that an actuation of the drive device does not automatically lead to the initiation of the closing movement. Because of this, can there is a loosening of the traction means tension when the drive device is actuated, especially in the area between the deflecting element and the attachment point of the Come pulling on the door leaf. This phenomenon, also known as "slack rope" leads to an increase in the risk of injury when operating gates of the aforementioned Art. With conventional industrial sectional doors with particularly heavy door leaves, which due to its inertia has a particularly high persistence in the Having the closed position, this problem is usually caused by the provision an additional pull rope is released, with which the door leaf from the closed position to the open position can be pulled. The provision of such an additional pull rope brings with it the need to provide appropriate guidance elements what to increase the assembly effort and the cost of a corresponding gate leads. It is also known that this favors the triggering of the closing movement can be, if facing away from the wall opening to be closed with the door leaf rear end of the guide rail assembly a pusher in the form of a additional compression spring is arranged with a in the open position of the door leaf the door leaf exerted pushing force towards the closed position on the door leaf becomes. However, it has been shown that even when using such a compression spring the closing movement is not triggered reliably and in particular then for stopping the door leaf movement can come when the individual door leaf elements Pass through arcuate section of the guide rail assembly. Accordingly, the Use of conventional thrust devices with one at the rear end of the guide rail arrangement attached compression spring is no adequate replacement for the known use an additional pull rope.

According to another aspect of the invention, the above explained operational reliability issues while ensuring an acceptable one Assembly or component expenditure through a further development of the known gates solved, which is essentially characterized in that the door leaf in the direction pushing device pushing towards the closed position, on the one hand, a coupling device coupled to the traction means and on the other hand has a push element that can be applied to the door leaf.

This aspect of the invention is based on the amazingly simple knowledge back that the closing movement is not just using an additional pull rope can be triggered reliably, but also when the pulling rope is needed anyway a thrust element acting as a driver is attached. This can Aspect of the invention with particular advantage in those already explained above Gates are used with a drive device acting on the deflection element, because the one running approximately parallel to the horizontal guide rail section Pull rope section when driving the door in any case in the direction of the closed position the gate is moved, while a loosening of the traction means or a slack rope only in Area of the vertical traction section can occur. From that point of view is the thrust element expediently on the parallel to the horizontal Guide rail section extending traction element section attached, so that it when actuated of the drive automatically with the movement of the traction system in contact with the Closing movement arrives at the rear end of the door leaf.

With regard to those occurring in the course of the opening and closing movement Relative movements between the traction device and the rear one during the closing movement At the end of the door leaf, the thrust element expediently has one which can be placed on the door leaf Contact surface on the traction device in a parallel to the direction of pull extending direction is displaceable. In this case, the additional biasing device be used as a traction device. It has already been explained above that the Traction means of the gate according to the invention expediently at least in the area of a the deflection element in the course of the movement between the closed position and the open position circumferential deflection section in the form of a chain with a plurality of is articulated interconnected tension members. In this embodiment becomes a deflection while ensuring sufficient tensile strength of the traction device with particularly small deflection radii. This advantage can can also be achieved in that the traction means in a parallel to the deflection axis Direction has a greater width than in a perpendicular to and perpendicular to Direction of thickness. This is due to the small thickness of the traction device created the possibility in the direction perpendicular to the deflection axis redirect the traction means with particularly small deflection radii, while by the large one Width in the direction of the deflection axis, the required tensile strength is made available. In a particularly preferred embodiment of the invention, the deflection section has the traction means a plurality of one behind the other in the manner of a chain and with respect to articulated axes running parallel to the deflection axis connected tension members. It has to do with the deployment sufficient tensile strength in the area of the deflecting element is particularly favorable proven if the deflecting section of the traction means is a chain, in particular a roller chain with chain rollers running parallel to the deflection axis comprising chain links. In this case, a particularly reliable one Guide of the traction means can be achieved when the deflecting element is a suitable for the chain Sprocket, in particular pinion. With formed in the form of a roller chain Traction means can ensure a particularly high tensile strength small deflection radii can be realized because the individual chain links with the help of articulated to the chain rollers and in contact with the tooth flanks of the chain sprockets Connecting elements are connected to one another, these connecting elements without impairing the deflection properties of the roller chain with one to provide the desired tensile strength required thickness can be performed.

Although such roller chains are much more expensive than conventional traction devices in the form of wire ropes, however, the use of these roller chains as a whole makes it possible a cheaper version of the gate as a whole, because of the internal arrangement of the deflection element no additional security measures must be taken.

As explained above in connection with conventional sectional doors, the traction device is expediently attached to the one on the door leaf End opposite end to a weight balancer or pretensioner coupled with which the door leaf in the closed position via the traction device in the direction is pushed to the open position, this pretensioning device at least a rotatably mounted spring shaft extending parallel to the deflection axis can have helically rotating torsion spring, on the one hand on the torsion spring shaft and on the other hand attached to a holder fixed with respect to the wall opening and in the course of a closing movement of the door leaf from the open position in the closed position is cocked. The traction means in devices according to the invention expediently at its opposite end attached to the door leaf End at a rotationally fixed with the, if necessary, facing away from the wall opening rear end of the guide rail section running parallel to the floor Spring shaft connected and preferably arranged at an axial end thereof Fixed winding drum on which the traction device during an opening movement of the door leaf is wound up. For cost reasons, it is preferred if a section of the traction means adjoining the deflection section, preferably the entire section winding section wound on the cable drum in the course of the opening movement of the traction means is formed in the form of a rope, in particular a wire rope. Execution of the winding section of the traction means in the form of a wire rope also prepares for the required tensile strength when operating gates with particularly heavy door leaves such as about industrial gates no difficulty because the winding drum is behind the rear end arranged parallel to the bottom of the guide rail section and therefore without hindering the movement of the door leaf with a special for winding thicker wire ropes can be of sufficient diameter. Here is the weight compensation device or, for example, in the form of at least one torsion spring formed biasing device expediently as well as the winding drum in the region of the rear end of the guide rail arrangement facing away from the open position intended.

For the use of a gate according to the invention with a particularly small one Headroom, i.e. at a particularly low height above the top of the available space to close the wall opening is the second Guide rail section expediently a further guide rail segment assigned, which is on the side facing away from the second section of the first Section or above the first section extends approximately parallel to it and one then in the direction of the edge facing the closed position or includes the upper edge of the wall opening extending end portion, this further Guide rail segment for guiding one on the last during the closing movement Door leaf element and in the closed position uppermost door leaf element fastened guide element serves. The deflecting element is expediently on the sectional door leaf facing inner side of this end portion, the deflection axis is on the side of the end section facing away from the arcuate section and the deflecting element preferably overlaps the end section at least partially.

In the course of the opening movement, the last one runs through this movement Door leaf element, to which the traction means is also attached, part of the arcuate section the guide rails and moves away from the wall opening. In this Case, a significant tractive force can still be exerted on the door leaf, if the lower edge of the last during the closing movement or in the closed position the bottom door leaf element has already moved away from the wall opening when the deflecting element in a direction perpendicular to the wall opening at a distance of the wall opening is arranged. In this case, trouble-free movement of the Door leaf in particular of the closing movement last door leaf element in one of the Closed position approximate position of the door leaf can be ensured that the attached to this door leaf element and from the further guide rail segment guided guide element via a traction means at least in the closed position Fastening receiving slot fastened to this door leaf element is.

Fig. 1

eine schematische Seitenansicht eines erfindungsgemäßen Tores,

Fig. 2

eine Detaildarstellung des in Fig. 1 strichliert eingerahmten Umlenkbereiches U des erfindungsgemäßen Tores in der Schließstellung,

Fig. 3

eine Detaildarstellung des Umlenkbereiches in der Öffnungsstellung,

Fig. 4

eine Detaildarstellung der Antriebseinrichtung für das erfindungsgemäße Tor,

Fig. 5a

eine Detaildarstellung der auch als Schubelement eingesetzten zusätzlichen Vorspanneinrichtung des erfindungsgemäßen Tores in einer ersten Phase der Schließbewegung,

Fig. 5b

eine der Fig. 5a entsprechende Detaildarstellung in einer zweiten Phase der Schließbewegung,

Fig. 5c

eine der Fig. 5a entsprechende Detaildarstellung in einer dritten Phase der Schließbewegung und

Fig. 5d

eine weitere Detaildarstellung der Vorspanneinrichtung des erfindungsgemäßen Tores.

The invention is explained below with reference to the drawing, to which reference is expressly made with regard to all details essential to the invention and not detailed in the description. The drawing shows:

Fig. 1

a schematic side view of a gate according to the invention,

Fig. 2

2 shows a detailed representation of the deflection area U of the gate according to the invention framed in broken lines in FIG. 1 in the closed position,

Fig. 3

a detailed representation of the deflection area in the open position,

Fig. 4

a detailed representation of the drive device for the gate according to the invention,

Fig. 5a

a detailed representation of the additional pretensioning device of the door according to the invention also used as a pushing element in a first phase of the closing movement,

Fig. 5b

5a shows a detailed representation corresponding to FIG. 5a in a second phase of the closing movement,

Fig. 5c

a detail representation corresponding to FIG. 5a in a third phase of the closing movement and

Fig. 5d

a further detailed representation of the pretensioning device of the gate according to the invention.

The sectional door shown in FIG. 1 essentially comprises a total of 10 designated door leaf, a total of 20 guide rail arrangement, a weight compensation or biasing device with which the door leaf in the in Fig. 1st shown closed position is pushed towards the open position, a total 40 with traction means, via which the weight compensation device 30 with is connected to the door leaf 10, a drive unit designated 50 in total, with which the door leaf between the open position shown in Fig. 1 and the closed position can be moved, as well as a total designated 100 also as a thrust element acting prestressing device.

In the embodiment shown in Fig. 1, the door leaf 10 is one along the guide rail arrangement 20 predetermined path between that shown in Fig. 1 Closed position, in which it is aligned approximately in a vertical plane, and an open position, in which it is overhead over a horizontal plane and parallel to the ground is aligned, movable. This will cause the door leaf to move without swinging out into the outside space in front of the interior space closed with the door leaf, that the door leaf from a total of four along the specified path in a row arranged gate leaf elements or gate members 12, 14, 16 and 18, which over Having joint axes perpendicular to the predetermined path and preferably hinges formed in the form of hinges are interconnected.

The guide rail arrangement 20 has a guide for guiding the door leaf movement attached to a side frame spar 2 (see FIG. 2), running approximately in the direction of gravity Guide rail section 22, one over an arcuate section 26 associated overhead guide rail section 24 and another, arranged above the guide rail section 24 and parallel for this purpose running guide rail segment 28, which on its with the End of the door leaf to be closed by a wall opening 5 facing towards has the upper edge of the wall opening 5 extending end portion 29.

Each of the gate members 12, 14 and 16 is in its upper region in the closed position Edge equipped with guide rollers 13, 15 and 17, respectively, through the guide rail sections 22, 24 and 26 engage formed guide rail. How special clearly shown in Fig. 3, the bottom gate member 12 is also in the closed position also equipped with corresponding guide rollers 11 on its lower edge. For reliable guidance of the door leaf, the guide rail arrangement 2 has in Fig. 2 shown guide rails or guide rail segments, which are attached on both sides of the side frame rails 2 of the door 5, wherein the door leaf 10 is arranged between these guide rails and corresponding Guide rollers are guided on both sides with the guide rails.

Guide rollers 19 are attached to the top gate member 18 in the closed position, which in the further guide rail segments arranged on both sides of the door leaf 10 28 intervene. By providing the additional guide rail segment 28 and the arrangement of the guide rollers 19 on the gate member 18 is ensured that the wall opening 5 is then completely closed by the door leaf 10 can be if the room height H is only slightly larger than the clearance height h the wall opening 5, because only the three lower gate members 12, 14 and 16 along the starting arcuate extending downward from the lower edge of the wall opening 5 Guide rail section 26 are guided while the gate member 18 with the help of the additional guide rail segment 28 in the direction of the upper edge of the Wall opening 5 is guided.

The weight compensation device of the sectional door shown in Fig. 1 is in Area of the rear end of the guide rail section facing away from the wall opening 5 24 or the further guide rail segment 28 is arranged. This weight balancer includes a perpendicular to the through the guide rail assembly 20 predetermined path extending axis 34 helically rotating torsion spring 32, which on the one hand on a torsion spring shaft rotatably mounted with respect to the axis 34 and on the other hand is attached to a fixed fastener. At least one end, but preferably at both axial ends of the torsion spring shaft a rope drum, not shown in the drawing, is attached in a rotationally fixed manner. At this Rope drum is in turn attached to a traction means designated 40, which starting from the cable drum approximately parallel to the guide rail section 24 extends and with the help of a arranged in the region of the upper edge of the wall opening 5 Deflection element 48 is deflected by about 90 °, so that it follows the deflection element 48 in the direction of gravity approximately parallel to the guide rail section 22 extends. At its end facing away from the cable drum, the traction means 40 is on fixed bottom edge of the bottom panel 12 in the closed position. With the traction device 40, the door leaf is coupled to the torsion spring 32 so that it moves from the opening position, in which it is arranged overhead in approximately a horizontal plane, in the closed position shown in Fig. 1, the torsion spring tensions, so that the torsion spring tension pushes the door leaf from the closed position into the open position. there the spring tension can be adjusted so that the weight of the door leaf is sufficient, to overcome the spring tension and the door leaf in the closed position hold.

In the embodiment of the invention shown in the drawing, this includes Traction means 40 a winding section formed in the form of a wire rope 42, which in the Course of the opening movement is wound on the rope drum, as well as one over Connecting element or an adapter 44 connected thereto and in the form of a roller chain 46 formed deflection section, which in the course of the door leaf movement in the form of a corresponding chain sprocket 48 formed deflection element. The Roller chain 46 ensuring a particularly high tensile strength with a low one Deflection radius to be deflected because the individual chain links from a special tensile rigid material can be made and by the articulated connection the individual chain links can be deflected with any small deflection radii is. Therefore, the deflection element formed in the form of a chain sprocket 48 can have a particularly small diameter, so that even with low headroom, i.e. with a particularly small difference between the room height H and the Headroom h above the upper edge of the wall opening 5 can be arranged can without hindering the door leaf movement. In the case of the one shown in FIG. 2, particularly The preferred embodiment of the invention is the chain sprocket 48 on the door leaf 10 facing inside of the guide rail arrangement above the end section 29 of the further guide rail segment 28, the chain sprocket 48 this End portion 29 engages without the movement of the door leaf 10 or at the top Edge of the gate member 18 arranged guide roller 19 to hinder in this end portion 29. The roller chain 46 forming the deflection section runs between the Door leaf 10 and the guide rails 26 and 29. This course of the roller chain 46 in the embodiment shown in Fig. 2 thereby that the guide roller 19 is attached to the gate member 18 via a roller holder attached to the gate member 18, this roller holder 60 one between the gate member 18 and the guide roller 19th has formed slot in which the roller chain 46 engages in the closed position. How 3, the chain sprocket 48 is vertical to the wall opening 5 extending direction at a distance from the wall opening 5. This ensures that an effective tractive force is then still exerted on the traction means the lower edge of the lower gate in the closed position or during the opening movement last goal can be exercised if this lower edge in the course the movement along the arcuate guide rail section 26 already from the Has removed wall opening 5. As indicated schematically in Fig. 1, the drive device 50 of the sectional door according to the invention shown in the drawing to the in Formed a chain pinion 48 formed deflection element. This can help the drive device 50 a rotational movement of the chain pinion 48 about the perpendicular to through the guide rail arrangement 20 predetermined path of the door leaf 10 extending Deflection axis are generated. Due to the positive engagement between the Roller chain 46 and the chain sprocket 48, this rotational movement is slip-free on the traction means transfer. Therefore, this form of drive via the chain 46 is particularly effective reliable transmission of the driving force to the door leaf. At the same time this coupling of the drive device 50 to the traction means 40 by the rotation of the Chain pinion 48 automatically generates a tension of the torsion spring 32, which in turn automatically to tighten the traction means 40 between the torsion spring 32 and the deflection element 48 leads. In addition, this form of drive can be achieved be that with a corresponding rotation of the deflecting element 48 automatically The door leaf closes because the weight of the door leaf does not more the entire traction device 40 and the torsion spring connected to the traction device, but only the area of the traction means between the deflection element 48 and the Attachment point on the door leaf must be tensioned while the remaining part of the Traction means is mechanically decoupled from it via the drive device. The drive of the Deflection element 48 can, as in FIG. 4, pass through the side frame spar Drive shaft 52 and one on the outer width of the frame bars facing away from the door leaf 10 or guide rails arranged drive pinion, which via a Drive chain 56 is connected to a drive unit. The drive unit can include a motor and / or a manually operated drive chain. Another advantage of The arrangement of the drive device just described can be seen in the fact that the drive unit, which is usually a problem even when using a drive motor Must have emergency chain for manual operation, in the vicinity of the wall opening 5 Wall can be arranged so that the hand chain does not hang down in the middle of the room, but in any case arranged in the vicinity of the wall having the wall opening 5 is. As an alternative to the embodiment of the invention shown in FIG. 4, the Drive unit without using an additional drive pinion 54 and one additional drive chain 56 act directly on the drive shaft 52.

As can be seen particularly clearly in FIGS. 1 and 5, is the additional pretensioning device coupled to the chain 46 in the region of the adapter 44. As in Fig. 5d illustrated, the additional biasing device 100 consists essentially of a Carrier 110 and a compression spring supported on an abutment 116 of the carrier 110 120th

The carrier 100 is equipped with guide rollers 112, which are in the further guide rail segment 28 are included (see FIG. 5a). In this way, at a Movement of the traction means 40 in the double arrow A shown in FIG. 5a designated directions the resulting movement of the coupled to the traction device additional pretensioning device along the further guide rail segment 28 out. In this case, the grinding system in FIG. 5d with the reference symbol 114 designated further guide element on a in the direction of gravity extending boundary surface of the further guide rail segment 28 prevented that the carrier 110 together with the compression spring 120 in this further guide rail segment 28 tilts. A can be used to fasten the carrier 100 to the chain 46 Connector 116 and a screw 118 are used.

In the phase of the closing movement shown in FIG. 5 a, the gate member 18 moves straight in the direction of the end section 29 of the further guide rail segment 28 while the gate member 16 just the arcuate portion 26 of the guide rail 20th passes. In this phase, the course of successive goal elements is roughly the course the traction means 40 approximated. The further pretensioning device 100 is arranged that the compression spring 120 is approximately parallel to the further guide rail segment 28 extends and is almost completely relaxed in this phase of the door leaf movement. in the further course of the closing movement leaves the guide roller 17 at the top of Gate 16 the arcuate portion 26 of the guide rail 20 while the guide roller 19 not yet the end section 29 of the further guide rail segment 28 has reached. In this phase of the closing movement, the gate member 18 is neither parallel to the horizontal section of the traction means 40 still parallel to the vertical extending section of the traction means 40, but forms the hypotenuse of an approximately right-angled and isosceles triangle, its cathets from the traction sections 40 are formed. Accordingly, the downward movement of the gate member 16 becomes almost completely into a pivoting movement of the gate member 18 about the guide roller 19th implemented so that the rear end of the gate member 18 relative movement the traction device 40 experiences, in the course of which it is braked. By this braking A contact surface 122 of the compression spring 120 enters the rear end of the gate member 18 System against the rear end of the gate member 18 and is compressed or tensioned. Damage to the gate member 18 is prevented by the gate member 18 is reinforced in the region of its rear end with a reinforcing plate 18a.

In the phase of the closing movement shown in FIG. 5c, that on the rear End of the gate member 18 attached guide roller 19, the front end of the end portion 29 of the further guide rail segment 28 reached. This location is based on the position of the gate member 18 shown in Fig. 5b achieved in that this gate member pivoted about the guide roller 17 in the course of the downward movement of the gate member 16 is, the rear end of the gate member 18 accelerates with respect to the traction means 40 becomes. By this accelerated movement, the rear end of the gate member 18 is again the compression spring 120 is removed, which in turn relaxes the compression spring.

The braking or acceleration of the rear end just described the gate member 18 occurs in a similar form when the gate members 12, 14 and 16 are arcuate Pass through segment 26 of the guide rail 20. The compression spring 120 tensioned each time by contact with the rear end of the gate member 18 when that rear end of the gate member 18 is braked and relaxed when this rear end is accelerated with respect to the traction means. This relaxation of the compression spring 120 promotes the acceleration of the rear end of the gate member 18 and thus acts to relax of the vertically extending section of the traction means 40 during the acceleration phase of the rear end of the gate member 18. This will make it excessive Prevents load fluctuations in the traction device, which could otherwise lead to the Traction device 40 jumps off the guide element 48. On the other hand, tension also leads the compression spring 120 does not cause excessive relaxation of the traction means 40 because this in the course of braking the rear end of the gate member 18 by the acceleration forces occurring anyway experiences an additional tension, which can be easily converted into a tension of the compression spring 120. This additional Tension occurs every time a guide roller is still in the guide rail section 24 is located while the preceding guide roller is the guide rail section 22 has reached.

In addition to the function of the additional pretensioning device just explained This additional pretensioning device can avoid load changes of the traction means 40 also be used as a thrust element, which a closing movement of the Door leaf 10 upon actuation of the drive device coupled to the deflection element 48 promotes or triggers. With a corresponding actuation of the drive device, the additional pretensioning device together with the traction means 40 in the direction of the opening 5 moves and arrives when the door leaf 10 does not move automatically is placed at the rear end of the gate member 18 to push this and so the To cause the door leaf to close. Such an impetus is also then causes when the door leaf stops in the course of the closing movement, so that a total of With the help of the additional pretensioning device, irregularities in door travel are compensated can be. Here, the contact surface 122 of the compression spring 120 to compensate for Relative movements between the traction means 40 and the rear end of the gate member 18th slidable in a direction parallel to the guide rail section 24. In addition, the compression spring 120 also makes the now soft contact acting as a driver additional biasing device on the rear end of the Gate member 18 causes so as to avoid damage to this gate member.

The invention is not based on the embodiment explained with reference to the drawing limited. Rather, there is also the use of gates according to the invention with more than four Door leaf elements thought. In addition, the drive in the area of the deflecting element also by a non-positive attack of a drive device on the traction means, such as about by a friction wheel. In addition, the use of traction means is also considered, in which the deflection section in the form of a toothed belt and / or in the form of several wire ropes running parallel to each other in the pulling direction are realized. Furthermore the additional biasing device can also be an elastic one instead of a compression spring Include element made of an elastomeric material and / or to a guide roller or Grip the guide roller holder of the door leaf.

Claims (14)

Door with a door leaf which is movable between a closed position, in which it is oriented approximately vertically, and an open position, in which it is oriented, preferably overhead, approximately horizontally, and which has a plurality of doors arranged one behind the other in its direction of movement and extending perpendicular to the direction of movement Hinged joints having hinges connected to each other door leaf elements (12, 14, 16, 18), a guide rail arrangement for guiding the door leaf movement with at least one guide rail (20) which extends over an arcuate section (26) into an approximately horizontal and approximately parallel to the open position of the Has the first section (24) of the door leaf extending approximately vertically and approximately parallel to the closed position of the door leaf (10), the second section (22) has a traction means (40) coupled to the door leaf (10) with which the door leaf (10) from the Closed position in the open position dr Incoming tensile force can be exerted on the door leaf (10) and, in the closed position, has the first section running approximately parallel to the first guide rail section (24), which extends via a section surrounding a deflection element (48) into an approximately parallel to the second guide rail section (22) passes over to the second section, and optionally a weight compensation device (30) with which the door leaf is pushed towards the open position at least in the closed position, characterized by an additional pretensioning device (100) with which the section of the traction means (40) surrounding the deflection element can be tensioned if, during the movement of the door leaf (10), a relative movement occurs between the traction means (40) and the rear end of the door leaf (10) during the closing movement. Door according to claim 1, characterized in that the pretensioning device (100) has a pretensioning element (120), which is fastened on the one hand to a first section of the traction means (40) and, on the other hand, can be placed on the door leaf (10). Door according to claim 2, characterized in that the biasing element (120) urges the door leaf (10) into the closed position when it is in contact with it. Gate according to claim 2 or 3, characterized in that the prestressing element (120) has a compression spring (120) which is supported on an abutment (116) fastened to the traction means. Door according to one of the preceding claims, characterized in that the pretensioning device (100) comprises a support (110) which may have the abutment and is fastened to the traction means (40) and is held on the guide rail arrangement (20) by at least one holding arrangement. Gate according to Claim 5, characterized in that the holding arrangement (110) has at least one guide element, in particular a guide roller (112), received in an approximately horizontally running guide rail section (28). Gate according to Claim 6, characterized in that the holding arrangement (110) has at least one guide element (114) which can preferably be placed on a vertical boundary surface of the horizontally running guide rail section (28) and which prevents the carrier (110) and / or that Preload element (120) tilts in the guide rail section (28). Door according to one of the preceding claims, characterized by a drive device coupled to the traction means (40) for moving the door leaf (10) between the closed position and the open position. Gate according to claim 8, characterized in that the drive device (50) has a drive motor. Gate according to claim 8 or 9, characterized in that the drive device is coupled to the deflecting element (48) and can be operated to generate a rotary movement of the deflecting element about the deflecting axis. Door according to one of the preceding claims, characterized in that the deflecting element (48) is in positive engagement with the deflecting section of the traction means (40) surrounding the deflecting element in the course of the door leaf movement. Gate according to claim 11, characterized in that the deflection section (46) of the traction means (40) comprises a chain with chain links arranged one behind the other in the pulling direction and articulatedly connected to one another, in particular a roller chain with chain links comprising roller links running parallel to the deflection axis, and that Deflection element has a sprocket suitable for the chain, in particular chain sprocket. Door, in particular according to one of the preceding claims, with a door leaf (10) which can be moved between a closed position in which it is oriented approximately vertically and an open position in which it is oriented approximately horizontally, and which has a plurality of arranged one behind the other in its direction of movement and has hinged door leaf elements (12, 14, 16, 18) connected to one another via hinges which run perpendicular to the direction of movement, a guide rail arrangement for guiding the door leaf movement with at least one guide rail (20) which is approximately horizontal over an arcuate section (26) and the second section (22), which runs approximately parallel to the first section (24) and runs approximately vertically and approximately parallel to the closed position of the door leaf, has a traction means (40) coupled to the door leaf with which one pulls the door leaf from the closed position into the open position dr tractive force can be exerted on the door leaf (10), and a pushing device (100) with which a pushing force pushing the door leaf in the direction of the closed position can be exerted on the door leaf (10), characterized in that the pushing device engages the Has traction means coupled and attachable to the door leaf thrust element (120). Door according to claim 13, characterized in that the closing element (120) has a contact surface (122) which can be placed on the door leaf and which can be displaced with respect to the pulling means (40) in a direction running parallel to the pulling direction.

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