EP2649263B1 - Sectional door leaf, sectional door device, and operating method - Google Patents

Description

The invention relates to a link gate, in particular a gate of a sectional door or a roller shutter. Furthermore, the invention relates to a link gate device provided with such a link gate leaf, which also has a drive and a control in addition to a link gate. Finally, the invention relates to an operating method for this.

The invention is particularly in the field of powered and monitored garage doors or industrial doors.

Generally speaking, the present invention relates to a gate leaf with an end portion and a further portion, wherein the end portion is disposed in front in a closing direction of the gate leaf. Moreover, the present invention relates to a closing device for an opening, in particular a building opening, with a gate and a drive motor for moving the gate and a control device for controlling the drive motor. The invention also relates to a method for detecting a blockage of a gate which is moved by a drive motor and which is driven in a closing direction.

Gate leafs of the type mentioned are used in particular for closing building openings. Different variants of these leaves are known, the limb gate wings of interest depending on the application as door elements slats, rods, sections or panels. Thus, the invention relates only to the members of lamellae, rods, sections or panels formed as gate members and not the so-called high-speed doors flexible hangings from a flexible gate wing material. Examples of sectional doors are in particular sectional doors or roller shutters or rolling grilles.

If such limb door leaves are used in a locking device of the type mentioned above, they will, if the building opening is not to be closed, be stored essentially in two different ways. The first type of storage is to wind the gate on an axle (roller doors), the second way is to store the gate substantially straight, the gate, for example, runs over a deflection and is brought to a storage position.

Vertically moving link gates may comprise a gate formed of horizontally disposed louvers, rods or sections, for example hinged together, which may either be moved around curves or rolled up like rolling gates or gates.

If these limb door leaves are driven by a motor, obstacles located in a closing path of the closing edge must be detected in order to avoid or minimize the risks arising from crushing. In the case of weight-balanced doors, it is possible to detect these forces by monitoring the engine forces and to initiate a reversal movement when a limit value is exceeded.

This procedure is faulty for non-weighted or heavy gates and difficult to achieve. Therefore, in such gates a switching or contact strip on the closing edge is necessary to detect obstacles. Such switching or contact strips may consist of a flexible material which is deformed at a pressure resulting from an obstacle. This deformation can be detected and a deformation signal transmitted to a gate control. If the gate control detects an excessive deformation of the closing edge, the closing gate movement is stopped and a drive in the opposite direction started (reversing) to release the obstacle.

From the EP 0 908 593 A1 is a link door leaf in the form of a roller door leaf known, which is composed of individual Torlamellen. The lowest element which forms the closing edge, a right-angled end profile is provided, which is provided with a closing edge safety device for detecting the approach of the closing edge to an obstacle. For this purpose, a sensor rod is slidably received in the end profile, which meshes with a rack portion with a gear shaft and is guided to secure detection of obstacles on the entire length of the final profile. An insertion of the sensor rod in the end profile is detected either by a contact switch to generate an electrical signal or mechanically to trigger a lock.

From the US Pat. No. 6,286,257 B1 is a link gate with the features of the preamble of the appended claim 1 known. Again, the lowermost end member is provided with a closing edge safety in the form of a switching or contact strip. This has a profile of elastic material and sensors that detect a deformation of the profile.

In the case of doors available on the market, so-called resistance switching strips are customary for such switching or contact strips, in which a mechanical resistance is interrupted or short-circuited when pressure is applied. In addition, optical systems are known in which the pressure occurring narrows the light path in the bar so far that the light can no longer penetrate from the transmitter to the receiver.

In certain situations, this switching or contact strips is not possible to reliably detect a blockage of the gate.

Other disadvantages of available in the market as Schließkantensicherungen switching or contact strips are, for example, cold problems of the flexible material from which these strips are made, the required height of such Torabschlussprofils that still below the closing edge forming or must be accommodated, or simply the cost of manufacturing, construction and connection of the same.

It is an object of the present invention to increase the reliability of the detection of a blockage of a gate of the type mentioned. In addition, a shooting device for an opening with a gate to be proposed, which meets increased safety requirements. The reliability of a method for detecting a blockage of a gate operated by a drive motor should also be increased.

This object is solved by the subject matters of the independent claims. Advantageous embodiments of the invention are the subject of the dependent claims.

The invention provides a gate leaf with a plurality of mutually movably interconnected gate members, of which an end member, which is arranged in a closing direction of the link gate, an end portion, characterized by a relative movement detecting means for detecting a relative movement between the end member and a directly or indirectly the end member adjacent gate member.

Thus, relative movement between door members of the sectional door itself, namely just a relative movement between the closing edge forming the end member and at least one further door member, which is directly or indirectly adjacent to the Englied, detect and use for monitoring the door movement with the invention. If a relative movement takes place where it should not take place (for example, in a region remote from the closed position), then this can be used as a switch-off or reversing signal.

The relative movement can be detected by different types, in particular by detecting a force between the relatively moving door members and / or a relative position between the door members. For this purpose, different force and / or Wegeaufnehmner can be used. Position sensors may e.g. inductively, capacitively or by means of radiation or waves, such as ultrasound or light beams.

Thus, the invention provides a door leaf having an end portion and a further portion, wherein the end portion is disposed in front in a closing direction of the door leaf, with a relative movement detecting means for detecting a relative movement between the end portion and the wider area.

According to a further aspect, the invention provides a link gate device with a link gate wing according to any one of the preceding claims, a drive motor for moving the link gate leaf and a control device for driving the drive motor.

The invention thus provides a closing device for an opening, in particular a building opening, with a gate according to one of the preceding claims, a drive motor for moving the gate and a control device for controlling the drive motor.

1. a) Antreiben des Gliedertorflügels in einer Schließrichtung;
2. b) Erfassen einer Relativbewegung des Endglieds relativ zu dem benachbarten Torglied; und
3. c) Anhalten und/oder Reversieren der Bewegung des Gliedertorflügels, falls die Relativbewegung zwischen Endglied und benachbartem Torglied einen vorbestimmten Wertebereich verlässt.

Furthermore, the invention provides a method for detecting a blocking of a moving from a drive motor formed of a plurality of movably hinged door members formed link gate, which has a front end in the closing direction end portion forming end member and a directly or indirectly adjacent thereto another gate member, comprising the steps:

1. a) driving the link gate in a closing direction;
2. b) detecting a relative movement of the end member relative to the adjacent gate member; and
3. c) stopping and / or reversing the movement of the link gate, if the relative movement between the end member and adjacent gate member leaves a predetermined range of values.

1. a) Antreiben des Torflügels in einer Schließrichtung;
2. b) Erfassen einer Bewegung des Endbereiches relativ zu dem weiteren Bereich; und
3. c) Anhalten und/oder Reversieren der Bewegung des Torflügels, falls die Bewegung des Endbereiches nicht in einem vorbestimmten Verhältnis zu der Bewegung des weiteren Bereiches steht.

Thus, the invention provides a method for detecting a blockage of a door leaf moved by a drive motor, which has an end area and a further area, with the steps:

1. a) driving the gate in a closing direction;
2. b) detecting a movement of the end portion relative to the wider portion; and
3. c) stopping and / or reversing the movement of the gate, if the movement of the end portion is not in a predetermined relationship to the movement of the wider area.

According to the invention, it is proposed to equip the above-mentioned door leaf with a relative movement detection device for detecting a relative movement between the end region and the further region.

Furthermore, a link gate device with such a gate is proposed. In addition, a method is proposed in which movement of the end region relative to the further region is detected and the movement of the gate is stopped and / or reversed if the movement of the end region is not in a predetermined relationship to the movement of the further region.

The predetermined ratio is specified in particular by a predetermined, in particular distance or time-dependent setpoint range for a relative position between the end member and adjacent member and / or a predetermined, in particular distance or time-dependent setpoint range for a force acting between these members force.

By the relative movement detection device of the gate according to the invention, it is possible to detect a blockage even if no or insufficient pressure is exerted on the closing edge. Weathering and aging-related changes in the closing edge do not affect the reliability of the device.

The relative movement detecting means may preferably comprise a relative position picker arranged to detect a distance of a reference point at the end portion from a reference point at the wider portion.

Preferably, the relative position sensor is arranged in a gap between the end region and the further region.

Preferably, the relative position sensor comprises a switch disposed between a portion of the end portion and a portion of the wider portion so as to be compressed when the distance of the end portion from the wider portion falls below a threshold value.

Instead of the photocell z. B. inductive or capacitive displacement sensors or ultrasonic sensors or other radiation-based displacement sensors can be used.

The relative position sensor preferably has a piezosensor which is arranged between a section of the end region and a section of the other Area is arranged so that it is compressed when the distance of the end portion of the wider area falls below a threshold.

Preferably, the relative position sensor has a light barrier which is arranged such that it is interrupted by a section of the end region or a section of the further region if the distance of the end region from the further region falls below a threshold value.

The relative movement detection device preferably has a movement determination device, which is designed to determine the relative movement between end region and further region from distance values detected by the relative position sensor at a time interval from one another.

The relative movement detection device may have a force sensor which detects a force acting between the end region and the further region. Such a relative movement detection device can also be used in gate leaves whose elements are not separated by gaps which increase or decrease depending on the relative movement of the end region and the further region.

The force sensor may include a strain gauge attached to a measuring section. Preferably, the strain gauge is attached to the measuring section such that an extension of the measuring section can be measured.

The extent of the measuring section is preferably dependent on a force exerted thereon. This is particularly advantageous if the modulus of elasticity of the material used for the measuring section is known.

The relative movement detection device preferably has a test device with which the function of the relative movement detection device can be checked. In a Particularly advantageous embodiment, a test procedure to be performed by this tester is automatically, so without the involvement of an operator, executable.

The link gate device according to the invention has the advantage that no additional sensors have to be mounted outside the gate leaf for the blocking recognition integrated in the gate wing. The gate can thus be completely pre-assembled by the manufacturer, reducing the installation time on site is reduced. In addition, the blocking detection in this linkage gate device is able to detect a blockage of the gate even if the closing edge is not compressed sufficiently. As far as the sensors of the blocking detection are arranged inside the gate, environmental influences such as moisture or dirt are reduced, thus increasing the reliability and extends the maintenance interval.

In a preferred embodiment, the gate device has an interruption device with a set of rules for triggering an interruption of the movement of the gate leaf on the basis of a signal from the relative movement detection device.

The set of rules preferably has rules for linking measured values or signals of the relative movement detection device to a desired movement state of the articulated gate device. As a result, the link gate device can distinguish a blocking of the closing edge by an obstacle from a stopping of the closing edge in an end position, for example in the fully closed position.

Preferably, the rule is adaptable to the conditions of the gate device.

Preferably, the gate device on an adjustment device, which is designed for automated adjustment of the rule. Such Adjustment device allows to correctly set the rules for the particular application of the link gate device, without having to fear a misuse by an operator.

The inventive method allows the recognition of a blockage of the gate even if the closing edge is not or only slightly loaded. Such a situation can occur if the end area in a guide is tilted and thereby blocked. Since the blocking of the end area is nevertheless detected, the operational safety of the gate leaf is increased.

To determine the movement of the door leaf, a manipulated variable of the drive motor can be used. In a preferred embodiment, the movement of the gate leaf is estimated from this manipulated variable of the drive motor and a setpoint range for the values detected by the relative movement detection device is calculated from the estimated movement.

The estimation is preferably carried out using an algorithm that takes into account the characteristics of the door leaf used as well as the selected drive. As a result, the method can be used for different types of link gates. It is also applicable regardless of whether the gate is rolled up on an axis or not.

Preferably, a range of the relative movement between 0 (i.e., synchronism of the end member and adjacent member) and a maximum value for the relative movement is set as the target value range, but a threshold value can be set for the maximum relative movement distance, the maximum relative movement speed or the maximum relative force.

The threshold value is preferably selected such that the measured movement speed of the end region deviates from the movement speed estimated from the manipulated variable of the drive motor by at most 25%. This will cause faulty shutdowns of the drive due to usual synchronization fluctuations and inaccuracies of the estimated movement speed avoided.

From a change in the relative movement of the end region, its relative acceleration can also be calculated as a further monitoring variable. If the end region has a position sensor, this can be used by using an algorithm for measuring the acceleration. As a result, additional fittings are avoided.

Preferably, when using a roller shutter with a hinged gate, a force acting between the end region and the further region can be measured and from these measurements the ratio of the movement of the end element to the movement of the adjacent gate can be estimated.

In a preferred embodiment, the allowable ratio between the movement of the end member and the movement of the further gate member is determined in an upstream adjustment step. As a result, the method can be adapted to the gate used, which further increases the reliability of the blocking detection.

Preferably, the adjusting step may provide that the gate is reciprocated between an open and a closed position. Depending on the measuring method used, force, relative speed, relative position and / or relative inclination measurements are preferably carried out in the adaptation step, by means of which a usual functional state of the gate is defined.

• Fig. 1 eine perspektivische Ansicht einer Hauswand mit einer Öffnung und einem diese Öffnung verschließenden Rolltor als Ausführungsbeispiel für ein Gliedertor;
• Fig. 2 eine Draufsicht auf das Rolltor von der Innenseite der Öffnung;
• Fig. 3 schematisch den Aufbau einer Rolltorsteuerung;
• Fig. 4 eine Ansicht wie in Fig. 2;
• Fig. 5 eine Ansicht wie in Fig. 2;
• Fig. 6 eine schematische Draufsicht auf einen unteren Bereich des Rolltores;
• Fig. 7 einen Schnitt entlang der Linie A-A durch den Rollpanzer aus Fig. 2 gemäß einer ersten Ausführungsform;
• Fig. 8 einen Schnitt wie in Fig. 7, wobei der Rollpanzer auf ein Hindernis getroffen ist;
• Fig. 9 einen Schnitt wie in Fig. 8 durch einen Rollpanzer gemäß einer zweiten Ausführungsform;
• Fig. 10 einen Schnitt wie in Fig. 8 durch einen Rollpanzer gemäß einer dritten Ausführungsform;
• Fig. 11 einen Schnitt durch den unteren Bereich eines Sektionaltorblattes als weiteres Ausführungsbeispiel eines Gliedertorflügels und
• Fig. 12 einen Schnitt wie in Fig. 11 durch ein Sektionaltorblatt gemäß einer weiteren Ausführungsform.

Embodiments of the invention are explained below with reference to the accompanying drawings. It shows:

• Fig. 1 a perspective view of a house wall with an opening and a shutter closing this opening as an exemplary embodiment of a link gate;
• Fig. 2 a plan view of the roller door from the inside of the opening;
• Fig. 3 schematically the structure of a Rolltorsteuerung;
• Fig. 4 a view like in Fig. 2 ;
• Fig. 5 a view like in Fig. 2 ;
• Fig. 6 a schematic plan view of a lower portion of the rolling door;
• Fig. 7 a section along the line AA through the Rollpanzer Fig. 2 according to a first embodiment;
• Fig. 8 a cut like in Fig. 7 with the rolling stock hit on an obstacle;
• Fig. 9 a cut like in Fig. 8 by a rolling armor according to a second embodiment;
• Fig. 10 a cut like in Fig. 8 by a rolling armor according to a third embodiment;
• Fig. 11 a section through the lower portion of a Sektionaltorblattes as another embodiment of a link gate and
• Fig. 12 a cut like in Fig. 11 by a sectional door panel according to another embodiment.

In the Fig. 1 Housing wall 10 shown from its outside has an opening 12 which is closed by a link gate device 13 according to an embodiment of the invention. The link gate device 13 has a link gate 15 with at least two relatively movable gate members 18.

For example, the link gate device 13 is designed as a rolling gate 14. The roller shutter 14 has a rolling armor 16 as a member door leaf 15.

The roller shutter 14 is in Fig. 2 with a view of an inside of the house wall 10 shown. The roller armor 16, which serves to close the opening 12, is composed of individual door members 18, which are formed here by rolling gate bars or fins 20. The lamellae 20 are movably connected to one another, for example by means of joints 54, in such a way that the rolling lanyard 16 has clearances between regions of the door members 18, eg gaps 22 between main bodies of the lamellae 20 in the freely suspended state.

The rolling arm 16 can be wound onto a winding shaft 24 so that it no longer closes the opening 12. On the winding shaft 24, a drive motor 26 of a door drive is provided which can drive the winding shaft 24 in both directions of rotation.

In order to give stability to the roller shutter 16, vertical guides 28 are arranged on the sides of the opening 12, in which edge sections of the slats 20 are guided. As a result, the pivotability of the slats 20 required for winding onto the winding shaft 24 is blocked relative to one another, as far as the slats 20 are located in the guides 28. By this measure, the rolling arm 16 is stabilized.

The in Fig. 2 illustrated roller armor 16 is about to close the opening 12 and therefore moves down in a closing direction 30. An edge 32, the front during a closing operation of the rolling arm 16 in the closing direction 30 is located, is generally referred to as the closing edge 32.

The fins 20 of the rolling arm 16 are made of metal. Although preference is given to using light metals for the lamellae 20, the rolling chassis 16 has a non-negligible mass. Objects that are trapped in the downwardly running rolling arm 16 may be affected by the weight of the Rollpanzers 16, which is distributed over a relatively small area, damaged. This is particularly dangerous when human body parts are in the travel path of the roller shutter 16. In this case, can be caused by the rolling arm 16 serious injuries, such as fractures.

To prevent this from happening, the link gate device 13 has devices, in particular sensors, which can not recognize proper operating states and can trigger a stop of the drive motor 26.

In Fig. 3 The structure of the present link gate control is shown schematically. A control panel 38 is provided for an operator to give instructions to a control device 36, in particular for opening and / or closing the roller shutter 14. The control device 36 controls the drive motor 26 in accordance with the instructions and thus sets the rolling arm 16 in motion.

In order to be able to carry out an automatic stop of the member door leaf 15, end position detection devices 40 are provided which signal the control device 36 when the roller shell 16 has arrived in an end position, ie a fully closed or fully open position. As a result, the control device 36 automatically terminate a closing operation of the rolling arm 16 when the rolling arm 16 has arrived in the closed end position. Similarly, an opening operation of the rolling arm 16 is automatically terminated when the rolling arm 16 has arrived in the open end position.

In order to avoid that people or objects are trapped by the closing rolling arm 16, blocking recognition devices are provided.

One of these devices is an integrated into the closing edge 32 pressure-sensitive contact strip 34. The contact strip 34 is connected to an end member 35, here for example with an end plate 35a, hollow and formed of a flexible plastic, which is comparatively simple with pressure exerted thereon deformed. At opposite sides in the closing direction of the inner side of the contact strip 34 electrically conductive surfaces are arranged, which touch when the contact strip 34 is compressed sufficiently. The contact closes the electrical contact and generates an emergency stop signal 42, which is transmitted to the control device 36.

Upon receipt of the emergency stop signal 42, the control device 36 controls the drive motor 26 so that it stops the link gate 15 as quickly as possible. Subsequently, the control device 36 controls the drive motor 26 so that it slowly opens the link gate 15.

The link gate device 13 has a relative movement detection device 44, which can generate a further emergency stop signal 46 in the event of blockage of the link gate 15. The relative movement detecting means 44 will be described later in detail.

In Fig. 4 the case is shown that the contact strip 34 is struck on an obstacle 48 which blocks the rolling arm 16 in the closing direction 30. Due to the weight of the rolling shell 16, the contact strip 34 is compressed so that it can trigger the emergency signal 42.

Since a minimum pressure must be exerted on the contact strip 34 so that it triggers, a considerable pressure on the obstacle 48 loads in the moment in which the gate door leaf 15 comes to a halt. One reason for this is that the gate members 18 which abut connect the Endtorglied 35, pushed together so that the column 22 disappears. As a result, part of the door members 18 is no longer suspended from the gate door leaf 15 itself but rests on the obstacle 48.

Only when the movement of the drive motor 26 is reversed and the door members 18, 35 hang again on the gate door leaf 15 on the door shaft, eg winding shaft 24, the obstacle 48 is relieved.

In Fig. 5 There is a larger obstacle in the form of a truck 50 in the travel of the rolling arm 16. The truck 50 is much higher than the obstacle 48. Therefore, at the time when the rolling arm 16 hits the truck 50, only a very small part the slats 20 unrolled. The weight of the slats 20, which rests on the closing edge 32, is not sufficient to deform the contact strip 34 so far that the inner contact is closed. The contact strip 34 thus generates in this case no emergency stop signal 42, by which the control device 36 would be initiated to stop the drive motor 26.

The following is based on the Fig. 6 the operating principle of the relative movement detection device 44 schematically illustrated. The Fig. 6 schematically shows the lower portion of a gate wing 15 with the closing edge 32 having the end member 35 and an adjacent gate member 18. Das in Fig. 6 shown gate member 18 is thus the second lowest member. The door members 18 may generally be louvers, bars or sections or panels of a sectional door. Accordingly, the end member may also be a lamella, a rod, a section or a panel of the link gate. The closing edge 32 forms the main closing edge of the gate.

Now, if between the members 35, 18, a gap 22 is present, which changes when hitting the ground or an obstacle, this property can be advantageously used for detecting obstacles.

For this purpose, the relative movement detection device 44 is designed for monitoring a relative movement between the end member 35 and the indirectly or immediately adjacent next door member 18. For example, the relative movement detection device 44 is designed such that it monitors the size of the gap 22 between the two members 35, 18 at least during the closing movement. When hitting an obstacle or the ground, the gap 22 changes. For example, the gap 22 decreases. When such a change, for example, reduction, occurs when the main closing edge 32 has not yet reached the bottom (which is the control is known), it must be an obstacle, and the reversing process is initiated.

Various embodiments of the relative movement detection device 44 will be described below with reference to FIG Fig. 7 to 12 explained in more detail.

In Fig. 6 a first embodiment of the relative movement detection device 44 is shown, which detects a relative movement between the end member 35 and another gate member 18. By end plate 35a designed as an end member 35 and the contact strip 34, an end portion 52 of the door is formed. The end member 35 is, as already indicated, by means of a hinge or joint 54 with the adjacent gate member 18, which forms a further portion 56 of the door connected.

In order to form the joint 54, in the case of the embodiment of the link gate device 13 designed as a roller shutter 14, the lamellae 20 have a groove 58, into each of which a projecting flange section 60 of a further lamella 20 is inserted. In order to prevent the flange portion 60 from sliding out of the groove 58 on its own, the flange portion 60 has a blocking portion 62 which is thicker than an opening 64 of the groove 58.

At a bottom of the groove 58, a force sensor 66 is arranged as a relative position sensor of the relative movement detection device 44. When the end portion 52 moves towards the wider portion 56, the blocking portion 62 presses on the force sensor 66 as shown in FIG Fig. 7 is shown. The force exerted thereby on it is detected by the force sensor 66. As soon as the detected force exceeds a threshold value, an emergency stop signal 46 is generated by the force sensor 66. The emergency stop signal 46 causes the controller 36 to stop the drive motor 26 and reverse its motion.

The force sensor 66 is in the in FIGS. 7 and 8 illustrated embodiment designed as a simple pressure switch. Once the pressure point of the pressure switch is reached, the electrical contacts are inside the pressure switch connected together, whereby the emergency stop signal 46 is generated. The pressure point of the pressure switch is selected so that the switch triggers when the end portion 52 has moved substantially to the wider area 56. This corresponds to a threshold value for the permitted distance between end region 52 and further region 56.

If a more accurate estimation of the force exerted as a measure of the relative position of the end region 52 and further region 56 is desired, the force sensor 66 can also be designed as a continuous force sensor, for example as a piezo element. In this case, it is usually necessary to provide an evaluation device for evaluating the values delivered by the piezoelectric element.

In the further embodiment, the in Fig. 9 is shown, a photoelectric barrier 70 is provided for forming the relative movement detecting means 44. The blocking portion 62 of the end plate 35 interrupts the light barrier 70 when the end portion 52 does not move as fast as the wider portion 56.

The threshold for triggering the emergency stop signal 46 is defined by the position of the light barrier 70. If the light barrier 70 is positioned closer to the opening 64, the relative movement detection device 44 triggers earlier than when the light barrier 70 has a greater distance from the opening 64. The light barrier 70 has no mechanical wear and thus contributes to an extended maintenance interval of the roller shutter 14.

In Fig. 10 is a further embodiment of the Gliedertorflügels 13, for example, in turn designed as a rolling arm 16, shown. In order to detect a relative movement between the end member 35 and the adjacent gate member 18, the relative movement detecting means 44 has a strain gauge 72. The strain gauge 72 is connected to the surface of a sensor holder 74. The sensor holder 74 is fastened at one end to the end region 52 and to the further region 56.

When the end member 35 moves away from the adjacent gate member 18, the sensor holder 74, and hence the strain gauge 72 attached thereto, is stretched. The measurable strain on the strain gauge 72 is thus a measure of the distance of the end member 35 of the other gate member 18. Move the end member 35 and the other gate member 18 toward each other, that a threshold for the distance of the two members 35, 18 below each other is, then triggers an evaluation the emergency stop signal 46.

As in particular with this example the Fig. 10 As can be seen, with the relative movement detection device 44, not only a signal can be triggered if the total size of the entire gap 22 changes; Rather, relative inclinations between the end member 35 and the adjacent door member 18 can be detected, or more generally only a partial change of the gap 22 can be detected. For example, even if the lower end member 35 is inclined relative to the door member 18, without there being a deflection or the ground, an emergency stop signal 46 can be triggered. The relative movement detection device thus functions not only in gate members 35, 36 which are movable relative to one another with great play, but also in door members which are articulated to one another by a hinge joint. Further, the relative movement detecting device 44 functions even with little play. If the force sensor 66 is used, the relative movement can also be detected by the force, that is to say by the load between the two adjacent door members 35, 18.

The relative movement detection devices 44 shown here can be used not only in a roller shutter with a rolling element 16 composed of individual links. The same sensors and methods can also be used in rolling grilles or sectional doors. There, too, there is an end member 35 which lies in the front in the closing direction 30, and whose distance from an adjacent gate member 18 varies depending on the relative movement of the members 35, 18.

In the FIGS. 11 and 12 are schematic representations of sections through the lower two door members 18, 35 of a Sektionaltorblattes 80, which is another Example of the gate gate 15 represents shown. The sectional door leaf 80 is part of a sectional door 82, which is another example of the link gate device 13. The sectional door leaf 80 has as gate members 18, 35 sections or panels 84, 86, wherein the closing edge 32 having lowermost section 34 forms the end member 35 and the next overlying section 86 forms the adjacent gate member 18. Although the sections 84, 86 are hinged together and are also guided in lateral guides, there is still a certain play in a gap 22 between the sections 84, 86 with raised Sektionaltorblatt 80 by the weight of the section 84, 86. This game is monitored by means of suitable force or displacement sensors.

The sectional door leaf 80 is executed in Fingerschutzausbildung, wherein the respective lower panel has a projection which engages in a recess on the underside of the respective overlying panel. For more details on the appropriate training of Sektionaltorblattes is on the DE 37 26 699 A1 directed. The corresponding projections and recesses can be advantageous for the construction of displacement sensors 90, 92, as shown in the FIGS. 11 and 12 are shown, are used. At the in Fig. 11 illustrated embodiment, an inductive displacement sensor 90 is formed, which is indicated by a coil 91.

In a particularly preferred embodiment, the coil is guided within the recess at the lower end face region of the adjacent Torpaneels 18 around, in which recess the Fingerschutzausbildungs projection of the end member 35 engages. The Torpaneele usually have a skin made of sheet steel, so that by more or less large engagement of the projection, the inductance of the coil is changed. Thereby, the relative movement between the end member and the adjacent first panel can be detected.

At the in Fig. 12 illustrated another embodiment of the sectional door leaf, a capacitive displacement sensor 92 is provided for detecting the gap 22. Again, a portion of the Paneelwandungen to build the Capacity be used. If the gap size of the gap 22 changes, then the capacitance of the gap 22 between the lower end member 35 and the adjacent gate member 18 changes. This capacitive displacement sensor 92 also allows the gap size and thus the relative movement between the end member 35 and the adjacent door member Monitor 18.

Like in the DE 37 26 699 A1 . Fig. 5 In such sectional gate devices, such as sectional doors 80, there may also be provided expandable elements between the individual sections, for example in the form of gaskets or the like.

If a force sensor 66 or a strain gauge 72 is used, these can also be attached to expandable elements of the link gate 15.

If the relative movement detection device 44 requires an evaluation device, it is provided that the threshold values and rules according to which the evaluation device decides whether or not there is a blockage of the closing edge 32 are determined largely automatically by an adaptation run.

For this purpose, the member door leaf 15 is at least once from a full open position until complete closure of the opening 12 method. While the member door panel 15 moves, the evaluation unit determines the sensor values measured by the respective sensor of the relative movement detection unit 44. For this evaluation, the evaluation device calculates which relative movements occur between the end member 35 and the further door member 18 when they are functioning correctly. Maximum characteristic values for these movements are defined as threshold values with an additional safety margin.

In such an adjustment run, the end position detection device 40 is also taught in addition.

Maintenance is simplified in that the sensors of the relative movement detection device 44, if they have an evaluation device, can be tested for their function by this evaluation device. Sensors which have no evaluation device can be tested directly by the control device 36.

Such automatic testing includes, for example, starting and stopping the drive motor 26 while the sensors are being read out. If the relative movement between end member 35 and further gate member 18, which is known for these changes in the states of motion, is recognized correctly, it can be assumed that the sensors function properly.

Of course, the relative movement detecting means 44 may also comprise any combination of the sensors explained in the individual embodiments, e.g. one or more of the force sensors 66, one or more of the displacement sensors 68 and / or one or more of the light barriers.

The limb door leaf 15 presented here, the limb door device presented here and the method presented here make it possible to detect blockages of the closing edge 32 even if the contact strip 34 is not compressed or not sufficiently compressed to ensure recognition of the blockage. Unlike the contact strip 34, a tilted closing edge 32 can be seen with the relative movement detection devices 44, for example.

In addition, the limb gate 15 and the link gate device are insensitive to weathering and aging.

LIST OF REFERENCE NUMBERS

10

housewall

12

opening

13

Gliedertorvorrichtung

14

rolling gate

15

Gliedertorflügel

16

rolling armor

18

door section

20

slats

22

gap

24

winding shaft

26

drive motor

28

guide

30

closing device

32

closing edge

34

contact strip

35

end link

35a

end disk

36

control device

38

Control panel

40

Endlagenerfassungseinrichtung

42

emergency stop signal

44

Relative motion detector

46

emergency stop signal

48

obstacle

50

truck

52

end

54

joint

56

another area

58

groove

60

flange

62

blocking portion

64

opening

66

force sensor

70

photocell

72

Strain gauges

74

sensor holder

80

Sectional

82

sectional

84

section

86

section

88

hinge

90

inductive displacement sensor

92

capacitive displacement sensor

Claims (14)

1. Sectional door leaf (15) comprising multiple door sections (18, 35) which are hinged to one another in a movable manner with respect to one another and an end section (35) of which forms an end region (52), said end section lying at the front in a closing direction (30) of the sectional door leaf (15),
   characterized by a relative movement detecting device (44) for detecting a relative movement between the end section (35) and a door section (18) that is directly or indirectly adjacent to said end section (35).
2. Sectional door leaf (15) according to claim 1,
   characterized in that said relative movement detecting device (44) includes a relative position sensor that is arranged in a manner such as to detect a movement of the end section (35) and the adjacent door section (18) toward each other.
3. Sectional door leaf (15) according to claim 2,
   characterized in that said relative position sensor is chosen among a group of sensors including a force sensor (66), a strain gauge (72), a piezo sensor, a pressure and force-sensitive switch, an inductive and/or capacitive path sensor (90, 92), an optical path sensor, a light barrier (70), a radar path sensor and/or an ultrasonic path sensor.
4. Sectional door leaf (15) according to claim 2 or 3,
   characterized in that said relative position sensor includes a pressure-sensitive switch that is arranged in a manner such that it is compressed by the end section and the adjacent door section and that it is activated when the distance of a reference point on the end section (35) from a reference point on the adjacent door section (18) goes below a threshold.
5. Sectional door leaf (15) according to one of the preceding claims,
   characterized in that said sectional door leaf is chosen among a group of door leafs comprising sectional door leaves (80) having several sections (84, 86) hinged to one another, panels as the door leaves (18, 35), roller doors (16) having several roller door slats or laminations (20) as the door sections (18, 35), and rolling grills, wherein said door sections (18, 35) are formed by rolling grill elements.
6. Sectional door device (13) comprising a sectional door leaf (15) according to one of the preceding claims, a drive motor (26) for moving the sectional door leaf (15), and a controller (36) for controlling said sectional door leaf (26).
7. Sectional door device (13) according to claim 6,
   characterized in that said sectional door device (13) includes an interruption device having a regulator for triggering an interruption of the movement of the sectional door leaf (15).
8. Method of detecting blocking of a sectional door leaf (15), which is formed by several door sections (18, 35) which are hinged to one another in a movable manner with respect to one another and driven by a drive motor (26), the sectional door leaf having an end section (35) forming an end region (52) lying at the front in a closing direction, and a door section (18) that is directly or indirectly adjacent to the end section, the method comprising the steps of:

   a) driving the sectional door leaf (15) in a closing direction (30);

   b) detecting a relative movement of the end section (35) relative to the adjacent door section (18); and

   c) stopping and/or reversing the movement of the sectional door leaf (15) if the relative movement between the end section (35) and the adjacent door section (18) leaves a predetermined range of values.
9. Method according to claim 8,
   characterized in that a relative position between the end section (35) and the adjacent door section (18) is detected and a shut-off initiated at the occurrence of a deviation of the relative position from a predetermined range of values.
10. Method according to claim 8 or 9,
    characterized in that the predetermined range of values is determined as a function of a door position or a driving movement time.
11. Method according to claim 10,
    characterized in that the range of values is estimated from a variable of the drive motor (26).
12. Method according to one of the claims 8 to 11,
    characterized in that the predetermined range of values is obtained in an upstream adaptation step in which the gradient of the relative position is obtained in a test run.
13. Method according to one of the preceding claims,
    characterized in that step b) at least comprises one of the following steps:

    b1) detecting a force between the end section (35) and the adjacent door section (18) and/or

    b2) detecting a distance between reference points on the end section (35) and the adjacent door section (18).
14. Method according to claim 13,
    characterized in that step b1) is performed using a force or pressure sensor or using a force or pressure-sensitive switch and/or
    step b2) is performed using an inductive, capacitive or optical path sensor (90, 92, 70) or using an ultrasound sensor or radar sensor.

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