EP1630336B1 - Door with a device for improving the opening behaviour of the door, in particular of a sectional overhead door - Google Patents

Abstract

The door has a door blade with top and bottom segments, in which each segment has two ends facing opening and closing directions of the blade, respectively. The bottom segment with three rollers shifts its middle roller (16) in the opening direction between its ends, where the middle roller is not adjacent to the end facing the closing direction. The shifted roller is placed in a curved rail section when the blade is opened widely. The curved section is connected to horizontal and vertical sections of the rail. The rollers of each segment slide together in the opening direction of the door.

Description

The present invention relates to a gate movable between an open position and a closed position, in particular a ceiling sectional door, for improving the opening behavior of the door. By appropriate structural adaptation, an application to a side section is conceivable, which is guided by means of rollers or similar elements in a rail system or the like.

Ceiling and side sectional doors have enjoyed increasing popularity for many years. Sectional doors are regularly constructed so that the door leaf has a plurality of successively arranged in the direction of movement of the door, interconnected by hinge means segments, which are guided by rollers or the like in a rail system.

In the case of overhead sectional doors, mirror-symmetrically designed and arranged rails run on both sides of the door, with rollers mounted laterally on the segments running in the rails. Side sectional doors are suspended in a rail mounted above the door by rollers and are guided at the lower end by suitable means. It is understood that the means for guidance at the lower end of a rail / roller system can be, but because of the much lower forces to be taken into account and the requirement of the Überfahrbarkeit is quite different from that for carrying the door on its top.

The track system usually consists of a straight section, which is parallel to a ceiling section door to the side frames and a side sectional door parallel to the upper frame, a curve portion and another straight portion for receiving the gate in its open position (this portion will be hereinafter also called "storage portion"). The sections merge into each other.

Sectional doors, in particular overhead sectional doors, usually have a motor drive. For this purpose, in or parallel to the plane of the door leaf in its open position, ie at a ceiling sectional door on the ceiling and a Seitensektionaltor on the garage wall to which opens the gate, a motor and a guide rail with a movable on it and through the Motor mounted on a rope, a chain or the like drivable carriage. The carriage usually attacks on the opening in the first segment of the gate. This allows the gate to be opened and closed.

In addition, overhead sectional doors often have a weight relief in the form of a spring-loaded pulley (energy storage). A rope leads from the pulley to the bottom (in the opening direction of the gate rear) end of the lowest (in the opening direction of the last gate) segment. In the open state of the door, the rope is largely rolled up on the pulley. When closing the door, the rope is unrolled against the force of a spring and thus tensioned the spring. When the door is opened, the cable force or the spring force transmitted via the cable counteracts the weight of the door and thus relieves the load on the motor.

Alternatively, in a ceiling sectional door with energy storage pulley of the drive motor also - if necessary via a gear - attack directly on the pulley.

As already mentioned, a gate of the type described above is guided by means of rollers in a rail system. The rollers are each laterally with respect to the direction of movement of the door at the front and rear end of each segment in the direction of movement of the door. In successive segments connected by a hinge, it is not necessary for a roller to be provided on either side of the hinge. Rather, in each case a role sufficient in the hinge area.

When opening the door, the problem may now arise that in the open end position of the door leaf in the opening direction last segment still projects into the passage opening, because the last role is still in the curve segment of the rail system and the segment comes to stand obliquely in the curve segment ,

A directly available way of solving this problem is to extend the straight sections of the rails to the corner, i. to reduce the radius of curvature of the curve section, so that the rollers and thus the ends of the segments are pulled further into the corner of the curve section. However, this solution is accompanied by a decreasing radius of curvature associated enlargement of the executives, when the rollers go through the curve, contrary. Thus, in practice, the lower limit for the length of the curve section is about one segment length.

Also, it would be quite possible to extend the second straight section (the memory section) of the rail system so that even in the opening direction last Segment can be completely pulled into it. This is from a functional point of view in Seitensektionaltoren and such ceiling sectional doors that dispense with a pulley, quite conceivable, but has the disadvantage of increased space requirements in the depth of the closed space with the gate. However, especially in the case of particularly wide side sectional doors, but also in the case of overhead doors for high halls, it may be that such an extended storage section can not be accommodated at all because of a too short length of the building. In either case, however, the space needed for the extended storage section is lost for other uses.

In the case of overhead sectional doors with pulley, the latter solution is also unfavorable for functional reasons and under certain circumstances can not be realized. Due to the operating principle of this door drive, the cable extends substantially vertically from the pulley down to its attachment point to the door leaf, so parallel to the running direction of the rail, as the lower end of the door leaf is in the vertical straight section. Now, if the last segment with its lower end, in which the last roller and the attachment point of the rope are in the connecting the two straight sections curve portion of the track, the rope forms an ever-increasing angle with the direction of the rail, until reached a point in which the torque of the motor and the remaining spring force of the nearly "discharged" spring is no longer sufficient to move the door leaf further in the opening direction. In a drive that acts directly on the pulley, comes even at a very strong engine, the door leaf at the latest then to a halt when the cable force only in one direction orthogonal to the running direction of the rail acts, which will be the case depending on the curve geometry and arrangement of the pulley in about halfway the curve section. The result is that the lower edge of the lowermost segment is not raised to the level of the memory section, since the lowermost segment is "in the curve" at a certain angle. An extension of the memory section would thus miss its target since the lowermost segment of the door leaf can not be completely brought into the memory section of the rail, which in turn causes it to lie obliquely in the curve segment. This not only reduces the total height of the gate, but it may be disadvantageous for design and safety reasons that there is no real rest position of the door in its open position in this case, since the weight of the lowermost segment always pulls down.

The US2619165 discloses a gate according to the preamble of claim 1, wherein the second roller is offset in the opening direction of the last gate segment from the second end to the first end thereof.

The US2023664 discloses a gate, wherein the last in the opening direction of the door leaf segment has a pivot arm and a roller, which roller is mounted on the pivot arm.

The present invention is therefore based on the object to increase the Durchgangsmaß of side or overhead sectional doors according to the prior art with the simplest possible means without significantly lengthening the length of the rail system and without having to increase the performance of the engine.

Another object is to provide a ceiling sectional door a rest position in the open state.

The object is achieved with the features of claim 1. Advantageous embodiments and developments of the invention form the subject of the dependent claims.

According to the present invention is a gate with a movable between an open position and a closed position and driven and supported on at least one side by means of rollers in a rail and guided door leaf, wherein the rail has two substantially straight portions and a curve portion connecting the two straight portions, wherein the first of the straight portions substantially receives the door leaf in its closed position and the second of the straight portions substantially receives the door leaf in its open position; the door leaf has two or more segments which follow one another in the direction of movement of the door leaf and are interconnected by hinge elements; wherein each segment has a first end facing in the opening direction of the door leaf and a second end pointing in the closing direction of the door leaf; and wherein each segment of the door leaf has a first roller arranged near its first end and a second roller which is arranged near the second end in all segments except the last segment in the opening direction of the door leaf and in the last segment of the latter in the opening direction of the gate second end is offset from its first end.

Now, when the door leaf is opened so far that the second roll of the last segment is in the curved portion of the rail, the second end of the segment receives a stronger one due to the rotation of the segment about the second roll displaced forward relative to the prior art Deflection in the direction of the building corner, which is bridged by the curve section. This increases the passage opening of the gate.

According to the invention, the second roller is fixedly mounted on the segment between its front end and its rear end. Further, the last in the opening direction of the door leaf segment has a pivot arm which is pivotable about a lying between the first end and the second end of the segment bearing point to the inside of the door and the free end extends towards the second end of the segment; and a third roller, which is mounted on the pivot arm so that it is in the non-pivoted state of the pivot arm near the second end of the segment. Preferably, a stop device is provided, which prevents the pivoting arm swings out towards the outside of the door. The bearing point for the swivel arm can be contained in a bracket component to be attached to the last segment in the opening direction of the door leaf.

With such a trained pivot arm, the running stability of the segment can be improved when opening or closing, since the second end of the segment rests in the straight sections of the rail via the stop means on the pivot arm. As the segment enters the curved portion of the rail, the pivot arm pivots away from the segment with the additional roller (stored in the rail) so that the second end of the segment can make the pivoting movement described above toward the building corner.

Preferably, a rope or the like, which leads from the corner of the curve segment to the last segment and is fastened there in order to exert a force in the opening direction of the door on the door leaf, is fastened to the pivot arm near its free end.

Preferably, the first roll of a segment coincides with the second roll of the segment following in the opening direction of the door leaf.

With this measure, the design effort of the door can be reduced and the running behavior in the rail can be improved.

The amount by which the second roller of the last segment in the opening direction of the door leaf is offset from the second end thereof is preferably at least one to three roller diameters. Through experiments and calculations in the Applicant's home, it has been found that a distance of one to three roll diameters is required to achieve a noticeable effect. The exact value of the offset results in practice from the structural conditions such as desired deflection of the second end of the last door leaf, available space, etc.

The last in the opening direction of the door panel segment may have at its second end means for preventing deflection of the segment from the plane of the door leaf in its closed position, which engage in corresponding abutment in the frame of the door, wherein the means preferably a retracting in a frame-side groove Edge, one or a plurality of in corresponding frame-side recesses retracting bolts or the like.

When the second roller of the last segment is offset forward, as the displacement amount increases, there may be a tendency for the segment to be deflected at its rear end opening direction in a direction orthogonal to the gate plane. This can undesirably affect the overall stability of the segment as well as the tightness and burglary resistance of the door as a whole. By providing a frame-side groove, in which an edge of the segment when closing retracts, or attached to the segment of the bolt, which when closing enter the door in corresponding frame-side recesses, or the like, the above-mentioned instability can be prevented.

This configuration mainly relates to a ceiling sectional door that opens upwards and receives weight relief via the cable or chain or that acts directly on the rope or chain. However, it is also conceivable application to a Seitensektionaltor, in which the door drive via a motor located in the corner and a rope or a chain, the / from the attachment point to the segment on to a pulley on the other side of the gate and back to leads to the engine.

Conventionally, the rope or chain is attached to a ceiling sectional door at the second end of the last segment. Such a mounting would not bring much benefit in terms of the passage opening, even with a gate in which the second roll of the last segment is offset to the first end. However, when the rope or chain is attached to the free end of the above-described pivot arm, a particularly advantageous operation results such that the rope or chain can initiate its traction at a more favorable angle into the point of attachment. As a result, the force can be exploited particularly well in overhead sectional doors with energy storage pulley, and the last segment deviates particularly far from the passage opening in the open position of the door. Also, the effect of the spring-loaded energy storage pulley can be used better as weight relief, because the remaining length of the rope or chain near the closed position is greater and thus the spring of the pulley is not yet discharged so far.

Preferably, therefore, the second role of the last in the opening direction of the gate segment in the latter Transverse at least as far closer to the segment as the first and the third role, that it can pass between the segment and the rail at the latter; and an additional rail member to be mounted in the region of the curve portion of the rail is provided which defines a second roller guide surface in that region, the additional rail member having a distance from the tread of the rail measured in a direction perpendicular to its tread , which decreases in the opening direction of the door leaf.

When a door is formed as described above with its last segment having the second roller shifted in the direction of opening the gate, the second end of the last segment can rotate about the second roller from the plane of the door leaf, that is, the passage opening out to the outside of the gate, swing, regardless of whether or not attached to a pivot arm third roller is provided. Such pivotal movement may be undesirable for various reasons. With a construction as described above, this problem of unwanted swinging of the last segment can be largely minimized or even completely avoided, since the second role only runs on the rail element when the segment, the hitherto not swung out pivot arm and the first and the guided third roller in the rail, has taken a certain diagonal or skew in the curve portion, so that the proportion of Auschwenkbetrages the second end of the last segment is reduced perpendicular to the plane of the passage opening.

Preferably, the additional rail member has an outlet portion which is substantially parallel to the running direction of the second straight portion of the rail.

In this outlet section runs the second role of the last segment in reaching the open position of the door leaf. Characterized in that the outlet portion is substantially parallel to the running direction of the second straight portion of the rail (the "storage section"), in ceiling section doors thus substantially horizontally, in the case of overhead sectional doors, the weight of the last door leaf almost completely over the first and the second role of horizontal rail sections added. This has the effect of eliminating a tendency for the slanted last segment to pull the door leaf in its closing direction by its weight.

Further, the additional rail member may include a start-up portion (33) extending substantially parallel to the running direction of the first straight portion of the rail. Thus, a quick initial deflection can be achieved.

If the additional rail element has means for adjusting the distance of the running surface thereof from the running surface of the rail, the kinematics of the last segment can be additionally optimized.

Preferably, the gate is one which opens upwards, the rail is provided on each side of the door leaf, and the first and second rollers and other components provided on the rail side, in particular the pivot arm, are the third Roll and the additional rail element provided on each side of the door or the door leaf.

In this form, the invention is advantageously applicable to a ceiling sectional door.

• Figur 1 eine Darstellung einer Ausführungsform des Eckenbereichs eines Tores gemäß der vorliegenden Erfindung ist, welches das sich in der Öffnungsstellung des Tores dort befindende unterste Segment im Schnitt zeigt; und
• Figur 2 eine entlang einer Linie II-II in Figur 1 geschnittene Detailansicht des Eckenbereichs des Tores ist.

Other aspects, effects and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments, taken in conjunction with the accompanying drawings, in which:

• FIG. 1 FIG. 4 is an illustration of an embodiment of the corner portion of a door according to the present invention, showing in section the lowermost segment located there in the open position of the door; FIG. and
• FIG. 2 one along a line II-II in FIG. 1 sectional detail view of the corner portion of the gate is.

Hereinafter, the present invention will be described with reference to a preferred embodiment, which is also to be regarded as the best mode for carrying out the invention.

The overhead sectional door consists essentially of a plurality of segments, which are arranged one behind the other in the direction of movement of the door and connected by hinges in the transverse direction of the door and together form the door leaf, two left and right of the door leaf guide rails for guiding the gate, and a drive (not shown) to set the door leaf relative to the fixed rail in motion and / or hold in a particular position. There FIG. 1 is a side sectional view, there is only one of the guide rails to see.

FIG. 1 shows from a ceiling sectional door as an example of a gate according to the present invention, the lowermost segment 8 immediately before the opening position of the gate in side section. In FIG. 1 are a curved portion 2 and a straight horizontally under the ceiling extending portion 4 (hereinafter referred to as horizontal portion or storage section), which together with a straight, substantially vertically extending in the side frame 6 of the gate section (hereinafter called vertical section, not shown) form one of the guide rails, a lower segment 8 of the door leaf and a pulley 10 with a running to the lowermost segment 8 rope 12 shown. The pulley 10 is spring biased and thus acts as an energy storage for weight relief of the door leaf. Thus, the required drive power of a door drive (not shown in detail) are kept within limits. The operation of the door drive and the weight relief is substantially identical to that of the prior art described above, so that can be dispensed with repetitions. The attachment of the cable 12 to the last segment 8, however, differs from the circumstances in the prior art, as will be explained in more detail below.

The segments adjoining the lowermost segment 8 are not shown in detail in the assignment. It should be noted, however, that each of these segments not shown is connected via hinge elements with the respective next segment and each of these segments each on the left and right sides via a first roller in the region of the front end in the opening direction and a second roller in the area of the rear end in the opening direction are guided in the rail, wherein the second roller of an element may coincide with the first roller of a subsequent element. It is the first roll of the uppermost (in the opening direction first) segment mounted in a separate corner guide 38. The corner guide 38, the tread profile of which corresponds to the rail 2, 4, serves solely to receive and guide the first roller of the first segment in the opening direction of the gate. How out FIG. 1 Removable, this role and thus the front edge in the opening direction of the first segment when closing the gate is brought to the flush conclusion with the frame.

When the opening operation is initiated from the closed position, the segments gradually start to move upwardly through the action of the door drive in the vertical portion of the rail, through the curved portion 2, and into the horizontal (storage) portion 4. When passing through the curve section 2, the hinges that connect the segments to each other open and close to simulate the curve shape of the curve section 2 as a hinge.

In the drawings, the gate is shown immediately before the open position, with only the lowermost segment 8 being shown in more detail.

The lowermost segment 8 has a first roller 14, a second roller 16 and a third roller 18. It is understood that the first roller 14, the second roller 16 and the third roller 18 and all components described in connection therewith are each provided twice, namely right and left of the door leaf, corresponding to the two guide rails.

The first roller 14 is fixedly mounted on the segment 8 in the region of the upper (ie the front in the opening direction of the gate) end 20 of the segment 8 and in the rail (vertical section, curve section 2 and horizontal section 4) out.

The third roller 18, which is also guided in the rail, is mounted in a Schwenkarm-Haltebock 24 which is rotatable about a fixed relative to the segment 8 pivot point 26 in a plane defined by the Lotrichtung the Torblattfläche and the direction of movement of the door leaf. The fulcrum 26 is imparted by a bracket 28 integral with the segment 8 and is located on the inside of the door, as seen from the door leaf plane, and in the longitudinal direction of the segment between the lower end of the segment and the second roller. By a stop 30 ensures that the swivel arm-holding block 24 can pivot only to the inside of the door, but is supported in the direction of pivoting to the outside of the door against the segment 8. The third roller 18 is located near the free end of the Schwenkarm-Haltebocks 24 and comes in not swung out of the same state at the lower end 22 of the segment 8.

The second roller 16 is fixedly mounted on the segment 8 between its front end 20 and its rear end 22. However, the second roller 16 is not guided in the rail itself, because it is in comparison with the first roller 14 and the third roller 18 in the transverse or width direction of the segment 8 so far closer to this, that they completely out of influence or guide region of the rail 2, 4 comes, as in FIG. 2 clearly shown. This means that when entering the segment 8 in the curve section 2, the third roller 18 initially does not change its relative position with respect to the segment 8 at the lower end 22. In other words, the lowermost segment 8 starts its way through the curve section 2 like all other segments as well (with the exception of the topmost segment, which, as mentioned above, at its upper end undergoes a different storage than all other segments).

In the region of the curve portion 2 of the rail, an additional roller guide 32 is attached to the side frame 6, which defines a running surface for the second roller 16 in this area. The running surface of the roller guide 32 has in its vertical direction at a distance from the running surface of the rail, in particular of the curve section 2, which is large enough in the lower region to the second roller 16 when the segment 8 passes through the curve section capture, and towards the top, ie in the opening direction of the gate, decreases. In the lower region, the roller guide 32 has a nearly vertical start-up section 33 for securely capturing the second roller 16, in the upper region a horizontal latching section 34 such that the second roller 16 comes to lie in the open position of the door.

Now, when the segment 8 passes through the curve section 2, the second roller 16 runs on the roller guide 32, is detected by this and lifted. The geometry of the running surface of the roller guide 32, in particular its vertical distance from the running surface of the rail 2, 4 is designed so that the second roller 16 is captured only when the segment 8 is already with a certain diagonal position in the curve. As a result, excessive swiveling out of the segment 8 from the plane of the passage opening can be effectively reduced. The increase is then the faster, the steeper the running surface of the roller guide 32 leads upwards. However, the steepness of the tread of the roller guide 32 are limited by the fact that an overly steep course can block the movement.

From the moment that the second roller 16 runs on the roller guide 32 and is lifted by this, the Schwenkarm-Haltebock 24, whose free end is held by the third roller 18 mounted there in the rail 2, 4, starts from the segment 8 away to the inside of the plane of the door leaf to swing. With this geometry can be achieved with respect to the pulling action of the rope 12, a particularly advantageous effect, since this does not attach as in the prior art at the lower edge 22 of the segment 8, but at the free end of the Schwenkarm-Haltebocks 24. This is evident in FIG. 1 when the situation shown there is compared with the case of the prior art. In the prior art, a roller is fixed at the lower end of the segment and there is also attached the rope. To match the state of the art the same opening height as in FIG. 1 shown to reach the segment and thus the whole door leaf would have to be pulled much further into the horizontal section 4 of the rail. In this position, however, the rope 12 no longer exert force in the opening direction of the door on the door leaf, because the entire cable force would act perpendicular to the tread of the cam portion 2. In addition, the remaining length of the rope 12 would be very short and the spring already "discharged", so that the spring force would be low in itself. Unlike in the case of the present invention: The rope 12 is located at a favorable angle, so that the cable force still has a large component parallel to the running surface of the rail, ie in the opening direction of the door. Also, the starting point of the rope 12 is further down, so that the remaining rope length and thus the remaining spring force is greater. Thus, the segment 8 can be easily brought into its upper end position (the open position).

Thus, by the present invention, the passage height of a ceiling section door can be increased, with simple structural means, without increasing the engine power and under optimal utilization of the weight relief by the energy storage pulley. The travel of the door leaf in the horizontal section 4 is shorter, thereby also the travel of the door drive when opening and closing the gate is shortened. A passage loss through a drooping Torblattunterkante is minimized. The force required to open the door is reduced, which can be taken into account when designing the drive line of the door drive.

Due to the introduction of the cable force in the swivel arm-holding block 32, certain boundary conditions arise with respect to the position of the pivot point 26. As in FIG. 1 seen, the pivot point 26, which forms the force application point of the resultant of the cable force of the rope 12 and the bearing force of the third roller 18 in the segment 8, is offset inwardly with respect to the Torblattebene. In practice, the position of the pivot point 26 results from the consideration that the second roller 16 may not lift off the track of the roller guide 32, the bearing force of the second roller 16 may not be zero, but at the same time the executives, in particular the bearing force of second roller 16, may not be so large that the movement of the gate is blocked. It has proved to be advantageous if the pivot point seen from the door leaf level inside and in the longitudinal direction of the segment 8 between the second roller 16 and the lower end 22 is located.

The distance of the second roller 16 from the lower end 22 of the last segment 8 is to be chosen so that a sufficient Endlagenanhebung the lower end 22 is achieved. If there is no third roll and the second roller 16 in the conventional rail 2, 4 runs, can already be a distance of one to three roll diameters sufficient to achieve a significant Endlagenanhebung. The required dimension will ultimately result from the length of the segment 8 and the radius of curvature of the curve section 2. In the case of the presence of the third roller 18 with its swivel arm-holding block 24, the aforementioned distance should also be sufficiently large to ensure a suitable lever length between the pivot point 26 and the axis of the third roller 18 so. The appropriate lever length may result, for example, from the above-mentioned condition that the second roller 16 may not lift off its track.

The roller guide 32 also has a slot 36 which serves as an adjusting device. Thus, the direction or the angle of the track of the roller guide 26 with respect to the track of the rail 2, 4 can be optimized. Thus, a manual adjustment of the roller guide is possible to ensure a horizontal alignment of the locking portion 34.

According to the preferred embodiment, the second roller 16 is guided in the separate roller guide 32 only on one side. This restricts the position of the fulcrum 26, as mentioned above, to the effect that the force between the second roller 16 and the raceway of the roller guide 32 may not become zero, otherwise the second roller 16 would lift off the raceway and the segment 8 would lift off unstable situation. A greater freedom in the design of the pivot point 26 can be created, even if a two-sided guide is provided for the second roller 16 (not shown in detail). In a modification of the preferred embodiment, this may go so far that also the second roller 16 is guided in the rail, in which also the first Roller 14 and third roller 18 are running. In this case, however, must be taken into account that the lower end 22 of the segment 8 further pivots out of the goal plane.

Largely unproblematic is the position of the pivot point 26 in the case of a ceiling section door even if it is dispensed with the initiation of a force on the components 10, 12, then hardly force components can occur, which could make the second roll 16 stand out from their career.

From the above-described modification in that the second roller 16 is also guided in the rail 2, 4, starting, it is also possible as a second modification to dispense entirely with the swivel arm holding bracket 24 and the third roller 18. Any existing weight reduction by the rope 12 or the energy storage pulley 10 would then, however, as in the prior art again start at the lower edge 22 of the segment 8 and could not be used as advantageously as in the preferred embodiment. However, this second modification is then used as a particularly simple solution when the cable 10, 12 completely eliminated, as it may be the case with smaller, lightweight overhead sectional doors and side-sectional doors with slide drive is already the case.

As described in the above-described modifications, when the second roller 16 runs in the rail 2, 4 and thus also the roller guide 32 is omitted, the segments of the door leaf can be made wider. As a result, the passage width can be increased overall because of the gap to be bridged on the side frame 6, that is to be blinded gap between the rail 2, 4 and the segments of the door leaf must not be so large that the segments run past the roller guide 32 over.

The present invention has been described above by the example of a ceiling section door. However, it is also possible with some structural adaptations to apply the present invention in the case of a side section door. This application will also be based on the following FIG. 1 be explained.

In a Seitensektionaltor the leadership is fundamentally different. Instead of two substantially identically constructed rail / roller systems on both sides of the door, the door leaf is suspended and guided in a side sectional door in a comparatively stable ceiling rail, wherein the guide rollers are also designed as support rollers whose axle bearings can be rotatably mounted about a further axis. It can by complicated roller designs with - possibly double or multi-part - support rollers and this orthogonal guide rollers are used. On the other hand, the guidance on the ground is made much easier, such as in the form of bolts that run in a simple bottom groove. In a Seitensektionaltor can be dispensed with a weight relief, however, a drive via a cable or chain hoist, which is guided circumferentially in the ceiling frame, conceivable.

When the invention of in FIG. 1 shown preferred embodiment is to be applied to a Seitensektionaltor, it should first be noted that the essential components would be present only on the ceiling side rail / roller system. The first roller 14 and the third roller 18 would be as support and guide roller assemblies executed, which is also the weight of the door leaf in a direction perpendicular to the plane of the drawing FIG. 1 would take up. Accordingly, the pivot point 26 would be so stable that it could also take up moments in a plane of the axis of rotation.

The roller guide 32 would in any case have to be designed in a side sectional door so that two-sided executives can be accommodated, if only because the weight is lacking to keep the second roller 16 in a resting state safely on the track of the roller guide 32. When the drive in the usual way via a carriage / rail system, it is added that the drive pushes when closing the door in the closing direction, whereby the second roller 16 would lift off from a only one-sided track of the roller guide 32. Even with a drive via a rotating rope or chain hoist, the force introduced into the pivot point 26, depending on the position of the same, either during opening or closing, could include a component which is different from the one in FIG FIG. 1 has shown runway of the roller guide 32 away.

However, in the roller guide 32, a latching section 34 could be dispensed with. Instead, a simple stop could be provided.

In a side sectional door, it would be advantageous to dispense with the roller guide 32 and to perform the second roller 16 as a support / guide roller construction. Thus, the introduced into the joint 26 moments could be avoided. In this case, if the door drive is based on the aforementioned rail / slide system, also on the swivel arm-holding block and the third roller 18 could be omitted.

Regarding the leadership on the ground is to say that this of course has to simulate the kinematics of the ceiling system.

Both the side and the ceiling sectional door, it may prove advantageous if the leading end in the closing direction 22 is prevented in the closed position against evasion from the Torblattebene outwards by suitable means. Such means can be realized from a groove, a stop plate, or a construction of bolts and recesses.

The present invention has been described above in terms of a preferred embodiment of a ceiling sectional door and some modifications, including an application to a side sectional door. It is understood that the above description is illustrative only and is not intended to limit the inventive idea of the present application to the details and geometrical features described.

Claims (12)

1. A door having a door leaf movable and driveable between an open position and a closed position and supported and guided on at least one side by means of rollers in a track,
   wherein the track has two substantially straight portions and one curved portion (2) connecting the two straight portions, wherein the first of the straight portions substantially accommodates the door leaf in the closed position thereof and the second of the straight sections (4) substantially accommodates the door leaf in the open position thereof;
   wherein the door leaf has two or more segments which follow one another in the direction of movement of the door leaf and are connected to one another by hinge members;
   wherein each segment has a first end pointing in the direction of opening of the door leaf and a second end pointing in the direction of closure of the door leaf; and
   wherein each segment of the door leaf has a first roller (14) arranged near its first end (20) and a second roller (16) arranged - in the case of all segments with the exception of the last segment (8) in the direction of opening of the door leaf- near the second end (22),
   wherein - in the case of the last segment (8) in the direction of opening of the door- the second roller (16) is displaced from the second end (22) of the said segment towards the first end (20) thereof,
   wherein the second roller (16) is solidly mounted on the segment (8) between the first end (20) and the second end (22) thereof, and
   characterised in that
   the last segment (8) in the direction of opening of the door leaf has a swivel arm (24) - which is swivellable towards the inside of the door about a mounting point (26) positioned between the first end (20) and the second end (22) of the segment (8) and the free end of which extends in the direction of the second end (22) of the segment (8) - and a third roller (18) mounted on the swivel arm (24) in such a way that, in the non- swivelled state of the swivel arm (24), it is positioned near the second end (22) of the segment (8).
2. A door according to claim 1, characterised in that
   an arresting device (30) preventing the swivel arm (24) from swivelling out towards the outside of the door is provided.
3. A door according to claim 2, further characterised by a cantilever component (28) attached to the last segment (8) in the direction of opening of the door leaf, the said cantilever component bearing the mounting point (26) for the swivel arm (24).
4. A door according to claim 2 or 3, characterised in that a cable (12) or similar, which leads from the corner of the curved segment (2) to the last segment (8) in the direction of opening of the door leaf and is fastened there for the purpose of exerting a force on the door leaf in the direction of opening of the door, is fastened on the swivel arm (24) near the free end thereof.
5. A door according to any one of claims 2 to 4, characterised in that
   the second roller(16) of the last segment (8) in the direction of opening of the door leaf is positioned at least so much nearer to the segment (8) in the transverse direction thereof than are the first and the third roller (14, 18) that it is capable of running between the segment (8) and the track (2, 4) past the latter; and
   an additional track member (32) attached in the region of the curved portion (2) of the track is provided, which track member in this region defines a running or guiding surface for the second roller (16), wherein the additional track member (32) exhibits a measured distance from the running surface of the track (2, 4) in a direction perpendicular thereto which decreases in the direction of opening of the door leaf.
6. A door according to claim 5, characterised in that the additional track member (32) has a terminal portion (34) extending substantially parallel to the course of the second straight portion (4) of the track.
7. A door according to claim 5 or 6, characterised in that the additional track member (32) has an initial portion (33) extending substantially parallel to the course of the first straight portion of the track.
8. A door according to any one of claims 5 to 7, characterised in that the additional track member (32) has means (36) of adjusting the distance of the running surface thereof from the running surface of the track.
9. A door according to any one of claims 1 to 8, characterised in that the door is one which opens upwards, wherein the track (2, 4) is provided on each side of the door leaf and the first and the second roller (14, 16) as well as other components provided on the side of the track, in particular the swivel arm (24), the third roller (18) and the additional track member (32) are provided on each side of the door or door leaf.
10. A door according to any one of claims 1 to 9, characterised in that the first roller of a segment coincides with the second roller of the following segment in the direction of opening of the door leaf.
11. A door according to any one of claims 1 to 10, characterised in that the amount by which the second roller (16) of the last segment (8) in the direction of opening of the door leaf is displaced from the second end (22) of the said segment is at least one to three roller diameters.
12. A door according to any one of claims 1 to 11, characterised in that the last segment (8) in the direction of opening of the door leaf has, at its second end (22), means of preventing deviation of the segment from the plane of the door leaf in the closed position thereof, which means engage with corresponding thrust bearings in the frame of the door, wherein the means preferably have an edge engaging into a groove on the frame side, one or a plurality of studs engaging into corresponding frame-side recesses, or the like.

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