DE19951289A1 - Locking device and door drive device provided therewith for a door which can be driven by means of a motor drive unit - Google Patents

Abstract

The invention relates to a locking device (11) and a door-drive device (3) comprising said locking device for a door, in particular, for a canopy door (2) which can be secured against opening by unauthorised persons using force (37) from the exterior. The locking device (11) has a lever element (13), consisting of two lever arms (20, 21) which pivot about a first pivoting shaft (19). A connecting element, preferably a connecting rod (12) is hinged to the first lever arm (20) for connecting to the door leaf (1) and the second lever arm (21) has an engaging device (29) which catches, or butts in and takes up a fixed buttress element (9, 28).

Description

The invention relates to a locking device for by means of a motor drive unit drivable gate, in particular overhead gate such as tilting, pivoting or sectional gate, which locking device of a coupling device for coupling the door leaf to egg nem assigned by the motor drive unit reciprocating driver is to the door leaf in its closed state against movement in the opening direction to lock the door leaf if there is no force exerted by the driver a lever element which is about a first pivot axis in a first and counter set second pivoting direction pivotable indirectly or directly on the driver is held and an engagement device for detecting a preferably a guide tion device for the driver assigned, fixed abutment element points so as to lock the door leaf, the engagement device when pivoting the Lever element in the first pivoting direction in the engaged position and when pivoting the Lever element in the second pivot direction from the engaged position in release Position is movable, and with a rigid connecting element - preferably in the form a connecting rod - which on the one hand or at one end a connection device for Has connection to the door leaf and on the other hand or at the other end by one of the first pivot axis spaced apart second pivot axis pivotable with the Lever element is connected that this about the first pivot axis under thrust to the connector located in an orientation in which it can be connected to the door leaf tion element in the first pivoting direction and in the event of a tensile load the door leaf connectable alignment located connector in the second Swivel direction is pivotable. The invention further relates to such a device Locking device provided gate drive device. Such a locking device and Such door drive devices are known from EP-0 743 416 A1, to which further below is discussed in more detail.  

Door drives that are driven by an overhead door from an open position a closed position and vice versa have long been known. Generally white sen such door drives, as z. B. are known from DE 27 41 539 A1, along a guide device arranged horizontally above the door leaf course moveable ren carrier, for example a guide carriage. This driver is mostly connected to the door leaf to be driven via a linkage. It's also been around long known, the driver for emergencies in the event of failure of the automatic drive from Door leaf or from a traction device that the driver with a motor drive unit connects to separate.

It can be problematic with such gate drives that they are in the closed position Liche door leaf can be pushed open manually from the outside, the driver oh ne to be driven by the motor drive unit and possibly against its Wi the stand is moving in the opening direction.

Therefore, it has already been proposed several times, the slide and / or the door leaf in to lock its closed position against unauthorized opening. Examples of sol che locking devices are from DE-PS 19 61 916, US-A-3 704 548, the DE 88 02 127 U1, FR-A-2 349 014, US-A-3 909 980 and finally the entry mentioned EP 0 743 416 A1.

In the door drive known from DE-PS 19 61 916 is designed as a carriage Driver movable on a guide rail between two stops. At the closing A pawl is attached to the stop by means of which the slide in its lock position can be locked in place. The pawl is pretensioned in the locking position. To open the snap is the slide via a double-armed lever to the Traction device that connects the carriage to a motor drive unit connected. The two arms of the lever serve as stops for a limited swivel movement of the same. The free end of one of the two arms reaches under in the closed position the latch. When pulling on the traction device, the lever is first pivoted before the Moves the driver. The pawl is lifted out of its detection, so that the driver is released. A coupling device for coupling the gate sheet on the driver designed as a carriage is on the same axis as the double lever is articulated, but can be pivoted independently of it about this axis.  

In the locking device known from UA-A-.3 704 548, the driver does not become slide, but locked the upper end of the door leaf. About this snap-in lock To be able to solve the problem again before opening it is a rather complicated task involving levers and Mechanism formed sliders necessary.

From DE 88 02 127 U1 a locking device is known in which one on the door leaf connected linkage when the door leaf is subjected to force from the outside mer lifts and thus in detection with one arranged above the driver Rack or chain. This locking device does not always work reliably; in addition, it is undesirable to move the driver transverse to its actual direction of movement keep agile as this leads to unpleasant rattling noises and to an unpleasant one can lead precise guidance. The driver could for example also tilt and at normal operation come into detection with the rack or chain.

From FR-A-2 349 014 a locking device is known in which the connecting rod the coupling device on the driver is guided in an elongated hole. Swiveling around a peg inserted into the elongated hole has a pawl on the connecting rod net, which can snap onto an abutment element on the guide device. At An drive the driver from the closed position, the connecting rod along the Elongated hole, the latch from the Erfas solution is drawn. Also use the locking device known from US-A-3 909 980 det a possibility of moving a latch in connection with an elongated hole and an inclined plane to the detent from its detection on an abutment element to pry. Generally, such are a relative shift of the linkage and the Mit exploiting devices problematic in terms of wear and relative complex to manufacture, assemble and adjust to a specific gate at the installation site.

Has proven to be very reliable in practice and easy to manufacture and install on the other hand, the locking device known from EP 0 743 416 A1 mentioned at the outset proven in the beginning. With her is the connecting rod that the driver with connects the door leaf, not connected directly to the driver, but to an He belelement, which in turn is pivotable on a first pivot axis on the driver is stored. Overall, the one in the form of a connecting rod stiff connecting element and the lever element formed coupling device for  Coupling the driver to the door leaf designed as a toggle lever. The one ele One-arm lever element forming the toggle lever has a hook nose trained locking element, which is arranged in the region of the second pivot axis net and with a locking device arranged in the region of the guide device is connectable. Because of the small number of moving parts, which are also only under is pivoted and not shifted relative to each other, is the known Locking device very simple, works very reliably - except for the Latch is not part of a wear-related relative shifting movement under throw - and is also very easy to assemble and adjust.

With regard to the adaptability to different installation situations, the known one Locking device but can still be improved. So the toggle construction only allows a certain degree of angling of the connecting rod when the engagement is still radio should function. This is particularly disadvantageous if the guide device is high to be arranged above the gate opening. It may also be that the place in waa fair direction, d. H. in the opening direction, is limited at the place of use, so that it is desirable it would be worthwhile to have a shorter connecting rod. Here are the ones through the Function of the toggle lever set limits too quickly in some installation situations reached.

It is accordingly an object of the invention, starting from the prior art according to the EP 0 743 416 A1 a locking device and a door drive device provided therewith to create that is just as easy and reliable to set up, assemble and adjust are bar, but still greater adaptability to different installation situations offer door drive options.

This object is achieved in a locking device of the type mentioned at the outset by that the lever element two - preferably together - about the first pivot axis pivotable lever arms that the connecting element on the first lever arm is articulated and that on the second lever arm, the engagement device for detecting the Abutment element during or after pivoting the lever element and thus the second lever arm in the first pivoting direction, which is a push on the Corresponds to the door leaf connected connecting element, and to release the Wi derlagerelements during or after pivoting the lever element and thus the second  Lever arm in the second swivel direction, which pulls on the door leaf corresponds to the closed connecting element, is provided.

This amazingly simple measure ensures that the connecting element or more decouple the connecting rod on the one hand and the lever element on the other hand be pelt. The connector, i. H. especially the connecting rod is thus Can be connected to the door leaf in a larger angular range, as long as only with Druckbe in the opening direction, the lever element is rotated in the first pivoting direction becomes.

A door drive device provided with such a locking device is therefore also in Install higher heights above the door leaf opening or with shorter connecting rods bar.

Advantageous embodiments of the invention are the subject of the dependent claims.

The engagement device can be formed in various ways. You could e.g. B. one Include pin that for engaging the barb element in a recess on the same is introduced. For simple training, however, it is preferred that the second Lever arm on its side pointing in the first pivoting direction Engagement device forming hook or nose for hooking or reaching behind the Wi derlagerelements during or after pivoting of the lever element in the first Swivel direction and for releasing the abutment element during or after Schwwen Kung of the lever element in the second pivot direction.

So that in normal operation the tensile and compressive forces easily from the driver directly over the Coupling device, d. H. the lever element and the connecting rod, on the door leaf can be transmitted is an advantageous embodiment of the invention first stop device for limiting the pivoting of the first and / or second lever arm of the lever element in the first pivoting direction when the on Gripping position is reached, and / or a second stop device to limit the Swiveling the first and / or second lever arm of the lever element in the two th pivot direction when the release position is reached, provided. The Hebelele ment can only be swiveled to a limited extent just as far as to reach it the engagement position or the release position is necessary.  

Now many safety regulations for gates driven by gates require that these can also be opened in emergencies or in the event of door drive malfunctions. This is especially important if there is no further access to the information provided by the There is a door to be locked. For such cases, one is particularly advantageous Embodiment of the invention provided an emergency release device, by means of which the lever element for manually opening the gate can be brought out of the engaged position. The locking device can thus be used, for example, in the event of a door drive failure. Power failure - be unlocked so that the locking device opens a manual not opposed to the gate. However, many door drives are now self-locking leads, so that not only the locking device, but also the motor drive unit egg against manual opening of the gate. In this case it is advantageous if the Emergency release device both for unlocking the locking device and for Decoupling the door leaf from the motor drive unit is formed. More advantageous For this purpose, the emergency release device has a release device for releasing the Driver from the motor drive unit. In a preferred embodiment, the Lö Seeinrichtung a release lever element, which is manually from a normal position in the the driver is coupled to the motor drive unit in a release position in which the driver of the motor drive unit, in particular one of these ordered traction means is solved. The release device can, for example, be operated manually actuatable pulling device can be actuated. This pulling device can be, for example from the inside of the traction rope which can be closed by the gate and / or a train that can also be operated from the outside, for example via a Bowden cable include facility. Of course, there are also other cable pulling devices Actuators for the emergency release device - levers, linkage, etc. - conceivable. Manual actuation of the emergency release device is preferred, it would be but also automatic actuation via an emergency system is possible.

To ensure that the locking device for manual opening can be unlocked provided in an embodiment of the invention that the emergency release device has a biasing device, in particular a spring, which in the lever element preloaded its release position. In all previously known locking devices Intervention device at most biased into the engagement position. This then has the Effect that the engagement device always engages when the door leaf is closed and is maintained. But this is not absolutely necessary, because the intervention of the Intervention device only has to take place if the door leaf is actually from the outside  is opened. If, as is provided in this embodiment of the invention, biased the lever element in its release position, this has the advantage that also a manual opening of the door leaf with the driver uncoupled from the traction mechanism can easily be done without the engagement device first from the engagement position must be brought. With such a configuration, it would be sufficient if for Emergency release of the driver is uncoupled from the motor drive unit.

Practical tests have shown that this is the simplest solution in principle not in every case - especially with high clamping forces - for an absolutely safe Emergency release is suitable. In a preferred embodiment of the invention, therefore struck that the emergency release device comprises an unlocking means the actuation of the lever element for manual opening of the gate in emergency situations brought out of its engaged position or locked position, in particular pressed can, whereupon the door leaf can be pushed on or pulled open manually.

The unlocking device is further preferably designed such that when the Emergency release device - for example by pulling on the pulling device - first after releasing the driver by the release device, the second lever arm from the The engagement position swings into the release position. The emergency release device works so in two phases, so to speak. First, the driver is uncoupled from the motor drive unit. If the emergency release device is operated, for Example of a further tightening on the pulling device - then takes place in two th phase unlocking the locking device. In a concrete advantageous embodiment the unlocking device provided for unlocking the locking device is so on provided for releasing the driver from the motor drive unit Unlocking lever element arranged, designed or assigned to that in the course the pivoting movement of the unlocking lever element from its normal position the release position only after passing the release position by the unlocking lever element of the He which can be pivoted together with the second lever arm belelements detected such that the second lever arm ver in the second pivot direction pivots. In the simplest training, both the unlocking device and that Unlocking lever element formed by a single unlocking lever that when swiveled around a decoupling of the driver a small angle out of its normal position effected by the motor drive unit and when pivoting over it Most pivot angle also detects the lever element of the locking device and this pushes out of the engaged position. In the simplest version, the unlocking device is through  the unlocking lever element itself formed, the He after passing the release position bel element immediately detected and this pushes or pulls from its engaged position. In a preferred embodiment, this unlocking lever element is via the pulling device from manually and / or externally pivotable and with one the driver to the train coupling means of the motor drive unit, in particular in the engagement position Tensioned coupling pin to release it when the unlocking lever is pivoted elements connected in the release position. The unlocking lever element also has preferably an attack area for attacking a corresponding attack surface the lever element to the second lever arm from its engaged position in the free position to pivot.

To form the engagement surface of the lever element, which forms the locking hook, the ses in a further preferred embodiment, a third lever arm, which with the second Lever arm for joint pivoting about the first pivot axis is connected. This third lever arm extends into the swivel range of the unlocking lever element in such a way that it is in the engaged position of the lever element and in the normal position Unlocking lever element located at such a distance from a lever arm Unlocking lever element is arranged that a two-phase emergency door is feasible. For this purpose, the distance is preferably such that the Unlocking lever element and the third lever arm only after pivoting the Unlocking lever element seen from the normal position beyond the release position grasp so that the second lever arm of the lever element of the locking device at still further pivoting of the unlocking lever element is released.

In a specific embodiment of the invention it is further provided that a Lagerele ment for storing the lever element from the on the horizontally above the door leaf guides to be arranged extending in the opening direction Directionally driven driver protrudes downwards in the intended use which bearing element the first pivot axis in the intended orientation seen spaced down from the horizontal guideway of the driver is provided and on which bearing element preferably the first and / or the second Stop device are formed. This can happen, for example, in that the bearing element essentially in the form of a socket or with a sleeve or socket or tubular housing is formed so that the lever element in front and / or rear - above and / or below the swivel axis - when swiveling around the first Swing axis abuts the inner wall of the bearing element.  

Instead of the bearing element, which for a position of the first pivot axis below the Carrier guideway, the first pivot axis can also within the Driver itself be arranged. Then the lever element is inside the driver stored. In this case, the inner wall facing the first lever arm is preferably used in the driver housing as the first and / or second anchor devices. The second pivot axis is then in its intended use preferably below the guideway of the driving carriage.

For this purpose, it is provided in a particularly advantageous embodiment that the first lever arm seen from the first pivot axis in the intended orientation essentially Chen is directed downward, so that its free end when pivoting in the first Swivel direction in the opening movement direction of the driver moves. The lever arm does not have to point exactly downwards, it is sufficient if it points with one direction component points down. However, it is preferred if it is essentially downward points so that it is approximately transverse to the direction of movement of the door leaf and / or entrainment extends and thus the greatest torque is transmitted. Through the print job Impact, which occurs when the door leaf is attempted to be opened from the outside of the connector the first lever arm is in the interior of the one to be locked Swung into space.

The second lever arm is from the first pivot axis, for example, in a particular position upward, preferably essentially upward, so that its free end with the engagement device when pivoting in the first Swivel direction against the opening movement direction of the driver moves until he gets into his engaged position. The first and the second lever arm can thereby in an embodiment of the invention at least in the vicinity of the first pivot axis essentially straight to each other, d. H. extend at about 180 ° to each other. To this The lever element is easy to manufacture and acts as a movement reversing lever.

In an advantageous embodiment, the lever arms are simply made in one piece with one another leads rigidly or otherwise for joint pivoting in both pivot directions connected with each other. That is, the entire lever element results in a unit that always pivoted together around the first pivot axis.

In an alternative embodiment, the first and the second lever arm can also be used as two separate parts that are coupled together. The coupling takes place  preferably over a driver device such that the second lever arm with the mitbe first lever arm only when pivoting in one of the two pivot directions moves. He is preferably biased so that the two lever arms over the Capture driver device. Counteracting force on the second lever arm the detection of the driver device, however, can decouple it from the first lever arm swing away from this. It is preferred if the first and the second lever arm when the driver moves in the opening direction, pivot together and Movement of the driver decoupled from one another in the closing direction, in particular rela tiv are pivotable to each other. This then has the advantage that the second lever arm without taking the first lever arm and the connecting element coupled to it need to slide over the abutment element. In addition, the second lever arm decoupled from the first lever arm by that of the emergency door unlatching device easily removed from its engaging position, without having to move the first lever arm and thus the coupling device. With In principle, such an embodiment is also conceivable for a two-phase actuation to do without the emergency release device or first to unlock the lock direction and then the driver of the motor drive unit couple. So that when the lever arms are decoupled, the locking of the locking device in each If ensured, the second lever arm is preferably in the engaged position - preferred wise spring-loaded - preloaded.

It is further provided according to an embodiment of the invention that the second lever arm at its free end area to form the engagement device, in particular the Ha kens, angled or curved in the first pivoting direction, the in the first pivoting direction end face of the angled or curved End area a hook nose with an engagement surface for locking detection of the Wi has the bearing element. Overall, this allows the lever element to be a straight one more curved or angular as required - e.g. B. with essentially right Angle between the lever arms - be formed sheet metal strip, which on a Ends in a hook. A straight end acts z. B. as the first lever poor, in the straight end there can be an engagement point for the first swivel axis - at for example a hole - there is a curved end, for example acts as a hook that pivots when the lever member is pivoted in the first Hooks the swivel direction on the abutment element.  

On the other hand, it is also conceivable that the first and the second lever arm to each other run angled, with a hole or the like in the region of curvature Storage for the first swivel axis is located. The second lever arm is then z. B. com designed as a hook with a hook nose at the end. A straight extension of the second lever arm can be used as a third lever arm to provide a point of attack for the Unlocking device may be provided.

To hook the hook or transfer the nose over the one to be gripped behind Abutment element also in the normal sliding operation in the automati To enable the gate to be closed, the engagement device is further preferred provided with a locking nose, in particular the hook nose or the nose is a locking nose educated. The locking lug is on the side opposite the engagement surface provided with a start-up shoulder. If the engaging device continues to detect the Abutment element has an obtuse angled detection surface, so a Prevent the second lever arm from hooking with the abutment when there are strong closing forces that could occur if there is an angled detection surface in the Abutment element drills. Surprisingly, experiments have shown that also in obtuse angled detection surface a safe locking effect can be achieved.

The abutment element is preferably optionally at different locations along the Guide device attachable to this. The guide device can, for example be formed by a C-shaped guide rail, the abutment element being the C- Define the groove or C-recess across the C-groove or C-recess end, directed towards each other end areas of the C-profile can be clamped. Especially an embodiment of the invention is preferred in which the abutment element is used simultaneously a limiting device that limits the closing movement of the driver and so whose closed position defines, or is included by such a limiting device becomes. More preferably, the abutment element is - in particular in the C- Groove of the C-shaped guide rail protruding - edge of the limiting device educated.

The options for adapting the locking device to different installation situations is then increased if the connecting rod has several connection options for the optional connection to the door leaf and / or for the optional articulation of the ver connecting rod to the first lever arm. It is particularly advantageous if this a more or less large distance between the door leaf and the driver  can be bridged. In a specific embodiment, the connecting rod is advantageously flat and elongated, in particular as a perforated plate, with several spaced apart in the longitudinal direction, an optional connection to the door leaf and / or an optional link to the first lever arm, preferably circular, openings formed.

Embodiments of the invention are described below with reference to the accompanying drawing nations explained in more detail. In it show:

Figure 1 is a partially sectioned side view of the area facing the door opening of a door drive with locking device in a first embodiment with the door leaf closed in an attempt to open the door manually from the outside.

FIG. 2 shows a section along the line AA from FIG. 1;

Fig. 3 is a side view comparable to that of Figure 1 on a driver of the door operator with the door closed without external force.

Fig. 4 is a partially sectioned side view comparable to the view of Figure 3 on a second embodiment of a door operator with locking device.

Fig. 5 is a bottom view according to arrow A of Figure 4 on the second embodiment form of the door operator.

Fig. 6 is a view comparable to Figures 3 and 4 on a third embodiment of a door drive with locking device.

Fig. 7 is a bottom view of the area shown in Figure 6 of the third embodiment of the door drive with locking device. and

Fig. 8 is a section along the line BB of FIG. 2.

In the figures, various embodiments of a door drive, designated overall by 3 , for an overhead door 2 are shown only in the region of its connection to the door leaf 1 . More precisely, only the end to be attached to the lintel 4 of a door opening is shown of the door drive 3 . At the opposite end, the door drive 3 has a motor drive unit, not shown, which moves a driver in the form of a slide 6 , 106 or 206 between an open end position and the shown closed end position via a traction means - in the examples shown, a toothed belt 5 . As a guide device for the slide 6 , 106 , 206 , the door drive 3 also has a C-shaped guide rail 7 , as described in WO 98/12407, to which reference is made for further details.

The guide rail 7 is attached to the lintel 4 above the door opening such that it is located horizontally in the opening movement direction of the door leaf 1 above its opening path. 8 with a guide or deflection roller for the toothed belt 5 guided within the guide rail 7 is designated. The opening and closing movement of the carriage 6 , 106 , 206 is limited by a limiting device in the form of a limiting stop 9 , as is known from WO 98/12405, to which reference is made for further details. In Figs. 1 and 3 to 7 of the carriage 6, 106, 206 bounding limit stop 9 is only the closing ßendstellung shown. The limit stop 9 is clamped anywhere along the guide rail 7 with this, so that an adaptation to different installation situations and different end positions is possible.

In the examples shown, the overhead door 2 is a tilting door with a one-piece, tafelför-shaped door leaf 1 . The coupling between the driver 3 of the door drive 3 acting carriage 6 , 106 , 206 and the door leaf 1 takes place via a coupling device 10 , 110 or 210 , which at the same time a locking device 11 , 111 or 211 for locking the door leaf 1 against unauthorized opening is assigned outside. The hitch be device 10 , 110 and 210 comprises a connecting rod 12 or 112 connected to the carriage 6 , 106 , 206 via a lever 13 , 113 , 213 and to the door leaf 1 via a connecting bracket 14 . The connection bracket 14 is constructed as described in EP 0 768 444 A1, to which express reference is made for further details. This connector angle 14 of the door drive 3 to various motor-driven door leaves 1 is adaptable. The locking device 11 , 111 and 211 is essentially formed by the connecting rod 12 , 112 and the lever 13 , 113 , 213 mounted on the slide 6 , 106 , 206 in connection with the limit stop 9 . The illustrated Ausfüh approximately forms of the door drive 3 differ in the design of the Sperrvorrich device 11 , 111 , or 211 and in the formation of an emergency release device 40 , 140 , 240 , the manual opening of the gate in emergencies - z. B. power failure or other malfunctions of the door operator 3 - allowed.

In the following, a first embodiment will be explained in more detail with reference to FIGS . 1 to 3.

The carriage 6 has a bearing element 15 for mounting the lever 13 . Otherwise, the carriage 6 is constructed as described in WO 98/13569. Accordingly, the Schlit th 6 also has a groove 16 of a tongue and groove formation 17 , via which the bearing element 15 is connected to the carriage 6 . The bearing element 15 has a downwardly projecting from the carriage 6 in approximately socket-shaped housing 18 , in which the lever 13 is pivotally mounted to a limited extent about a first pivot axis 19 which extends transversely to the direction of movement of the carriage 6 . A first lever arm 20 of the lever element 13 extends below the first pivot axis 19 and the lever 13 comprises a second lever arm 21 above the first pivot axis 19 .

At the free end 23 of the first lever arm 20 , the connecting rod 12 is pivoted about a second pivot axis 22 . For this purpose, the free end 23 of the first lever arm 20 is fork-shaped, the Ver as a flat sheet metal strip rod 12 inserted between the two fork pieces of the free end 23 and is mounted to form the second pivot axis accordingly. The second lever arm 21 extends from the first pivot axis 19, starting straight to the first lever arm 20 . In the end region, the second lever arm 21 is, however, opposite to the opening movement direction of the slide 6 - toward a first pivoting direction 30 - curved or curved, the free end 24 of the second lever arm 21 then being in a hook-shaped configuration with a hook nose 25 directed downward runs out. The hook nose 25 has a run-on shoulder 26 , which points in the closing movement direction and downwards, and a detection surface 27 , which is designed to engage behind a limiting edge 28 on the limiting stop 9 .

In this way, the free end 24 of the second lever arm with the hook nose 25 , the starting shoulder 26 and the detection surface 27 with the limit stop 9 or its boundary edge 28 as a barb element for engagement, an engagement device 29 , with this locking device 11, the carriage 6th and the gate leaf 1 locks in the position shown in Fig. 1.

While the engagement position of the engagement device 29 is shown in FIG. 1, FIG. 3 shows the release position thereof. The lever 13 is biased by a spring 41 into the position shown in FIG. 3. The front and rear walls of the housing 18 are designed such that the lever 13 can be brought about the first pivot axis 19 from the release position shown in FIG. 3 by pivoting in the first pivot direction 30 into the engagement position shown in FIG. 1 . When pivoting the lever 13 in the opposite second pivoting direction 31 , the lever 13 is pivotable from the engagement position shown in FIG. 1 into the release position shown in FIG. 3. When pivoting in the first pivoting direction 30 Ver, the closer to the door leaf 1 wall 32 of the housing 18 serves as a stop device for the second lever arm 21 and the opposite wall 33 of the housing 18 as a stop device for the most lever arm 21 , while the pivoting movement in the second Pivoting direction 31 by the wall 33 of the housing 18 further distant from the door leaf 1 on the second arm 21 and by the wall 32 located closer to the door leaf on the first lever arm 20 is limited.

In the first exemplary embodiment, the emergency release device 40 is essentially formed by the spring 41 , which prestresses the lever 13 in the release position and by a release device 34 for releasing the slide 6 from the toothed belt 5 . The release device 34 comprises a cable 35 , by means of which a spring-loaded engagement pin, not shown (see FIG. 8 and the explanations below) from its detection with a toothed belt coupling 36 located in the carriage 6 , see FIG. 2, can be pulled. The toothed belt coupling 36 is constructed as described in WO 98/13625, to which reference is made for further details.

The locking rod 12 is ver to allow an optional linkage to the door leaf 1 and the lever 13 with a plurality of connection devices in the form of openings 37 . Overall, the locking bar is thus det ausgebil 12 as a flat elongated sheet metal strip with regularly re-apart through-openings 37 as perforated metal strips.

The function of the previously described first embodiment of a door drive and the first embodiment of a locking device 11 used therein is as follows:
When the gate 2 is closed without the application of external force, the Toran 3 and the locking device 11 are in the position shown in FIG. 3. The carriage 6 strikes the limit stop 9 , the lever 13 is pre-tensioned in its release position. In this position, when the door drive 3 is actuated, the door leaf 1 can be pulled into its open position via the slide 6 and the connecting rod 12 .

If the door leaf 1 is to be transferred from its open position into the closed position shown in the figures by the door drive 3 , this is done in push mode, with the lever 13 the position indicated in FIG. 1 relative to the bearing element 15 and thus to the slide 6 occupies. When the free end 24 of the second lever arm 21 reaches the limit stop 9 , the hook nose 25 slides with its run-up shoulder 26 over the boundary edge 28 until the detection surface 27 engages behind the boundary edge 28 . The carriage 6 may then continue to be moved until it abuts the limit stop 9 in the position shown in FIG. 1, which corresponds to the closed state of the sheet 1 . The door drive 3 then switches off, the lever 13 is accordingly its spring preload in the position shown in Fig. 3, ie transferred to the release position.

Fig. 1 illustrates what happens when an external force is applied to the door leaf 1 in this position. If an attempt is made to open the door leaf 1 from the outside, the connecting rod 12 is subjected to pressure or thrust in its longitudinal direction, as shown by the arrow 37 . As a result, the lever 13 is pivoted by the articulation of the shift rod 12 on the first lever arm 20 in the first pivoting direction 30 about the first pivot axis 19 until the engagement formation 29 comes into engagement position. Only then does the second lever arm 21 strike the striking device formed by the wall 32 , the carriage 6 is acted upon in the opening movement direction. But this happens at most until the detection surface 27 Zung edge against the Begren 28 strikes. Even with a greater application of force 37 , the door leaf 1 cannot then be moved further in its opening direction.

However, even if e.g. B. a power failure or otherwise caused failure of the door drive 3 occurs, nevertheless for a manual emergency opening of the gate 2 a feasible by the emergency release device 40 simple unlocking of the carriage 6 from the toothed belt 5 by pulling the cable 35 and pulling the driver, ie in the illustrated example of the carriage 6 , possible in the opening movement direction. In the first embodiment, the arrangement is such that the carriage 6 is moved against the bias of the spring 41 of the lever 13 by the door drive 3 in the closed position during the closing operation, whereby the lever 13 preferably reaches a handle position. The spring 41 of the lever 13 , which acts as an unlocking spring, is preloaded such that when the carriage 6 is unlocked, the door leaf 1 can be manually grasped and pushed open immediately after the unlocking. This is particularly important when using an emergency release without a second access to the garage.

In the following, with reference to FIGS. 4 and 5, a second embodiment of the door drive 2 with a second embodiment of a locking device 111 will ring in more detail. Parts of the same design have the same reference numerals, reference being generally made to the first embodiment for a more detailed explanation thereof .

The locking device 111 is also assigned to a coupling device 110 for coupling the door leaf 1 to a carriage 106 which acts as a driver. The movement of the carriage 106 is transmitted to the door leaf 1 via a lever element 113 mounted in the carriage 106 via a connecting rod 112 acting as a connecting element.

The lever element 113 comprises a first lever arm 120 and a second lever arm 121 , both of which are pivotable about a first pivot axis 119 located within the guide rail 7 in the first pivot direction 30 and the second pivot direction 31 .

The first pivot axis 119 is formed by a in the carriage housing 150 (see FIG. 5) ge mounted pin 151 . This pin is guided through the first and second lever arms 162 , 163 . The first lever arm 120 is formed by two cheeks 162 , 163 arranged on both sides of the second lever arm 121 and the connecting rod 112 . In the exemplary embodiment shown, the cheeks 162 , 163 consist of straight sheet metal strips. At the free end region 123 of the cheeks 162 , 163 , the connecting rod 112 is pivotably mounted between them about a second pivot axis 122 located below the guide rail 7 .

A free end region 124 of the second lever arm 121 has a hook nose 125 which is comparable to the hook nose 25 and has a run-on shoulder 126 and a detection surface 127 for detecting the limit stop 9 . The second lever arm 121 is formed by a sheet metal element mounted on the pin 151 , which can be referred to overall as a locking hook or locking hook element and extends in extension of the second lever arm 121 beyond the first pivot axis 119 and thus also a third lever arm 152 of the lever element 133 forms. The third lever arm 152 is angled downward in its free end region 153 . In the area between the first lever arm 120 and the angled free end region 153 of the third lever arm 152 there is a spring device, here in the form of a compression spring device 144 , which elastically prestresses the locking hook having the second lever arm 121 and the third lever arm 152 in the first pivoting direction 30 . As a result, the second lever arm 121 is pretensioned in its engagement position shown in FIG. 4.

The third lever arm 152 has on a side facing away from the first pivot axis 119 to form an emergency unlocking device 140, an engagement surface 154 for an unlocking lever element 143 .

On the slide housing 150 are the first lever arm 120 associated inner walls 132 and 133 , which allow pivoting of the first lever arm 120 , ie the cheeks 162 , 163 to a limited extent and thus act as first and second stop devices. On the first lever arm 120 is also a Mitneh mereinrichtung 155 formed with a pin mounted between the cheeks. With the slave device 155 is arranged on the first lever arm 120 that it detects the second lever arm 121 in the position shown in Fig. 4. In Fig. 4 the engagement position of the lever member 113 is shown, in which both the first lever arm 120 and the second lever arm 121 are pivoted in the first pivoting direction 30 , which corresponds to a thrust load 37 on the connecting rod 112 . Through the Mitnehmerein direction 155 , the second lever arm 121 moves when pivoting the first lever arm 120 in the second pivot direction 31 . The second lever arm is thereby brought out of its engagement position into the release position (not shown).

The emergency release device 140 is provided for manual opening. It essentially comprises an unlocking device 141 for unlocking the locking hook with the second lever arm 121 and a release device 134 for releasing a coupling between the carriage 106 and the traction means 5 .

The unlocking device comprises the unlocking lever element 143 , which can pivot the third lever arm 152 and thus the second lever arm 121 in the second pivoting direction 31 and thereby into the release position via the engagement surface 154 . The Löseein device 134 also includes the unlocking lever element 143 , which can pull the spring-loaded engagement pin from its detection with the toothed belt coupling 36 by unlocking the second lever arm 121 before unlocking the locking device 111 .

As can best be seen from FIG. 5, the unlocking lever element 143 is pivotably mounted about a third pivot axis 145 arranged transversely to the direction of movement of the slide 106 . On a first lever arm 146 of the unlocking lever element 143 , an operable component of a pulling device 135 engages at the free end of an interior of the space to be locked. This component is a rope bell 147 . A second lever arm 148 also engages a component of the pulling device 135 that can be actuated by the exterior of the space to be locked, namely a Bowden cable 142 . Either by pulling the Bowden cable 142 or on the cable bell 147 , the unlocking lever element 143 can be pivoted ver about the pivot axis 145 . A pin 149 guided in an arcuate elongated hole pulls the engaging pin from its detection with the toothed belt coupling when the unlocking lever element 143 is pivoted, whereby, when a release position is reached, the carriage 106 is uncoupled from the toothed belt 5 . In addition, an arm formed on the second lever 148 of the unlocking lever element 143 engages the engaging area 156 when pivoting the unlocking lever element 143 from the normal position shown in FIG. 5 the gripping surface 154 arranged in this normal position at a distance from the engaging area 156 , around the second lever arm 121 to unlock.

The operation of the second embodiment of a locking device 111 shown in FIGS. 4 and 5 is described below:
Fig. 4 shows the position of the locking device 111 when the gate is closed. The carriage strikes the end stop 9 . Both the first lever arm 120 and the second lever arm 121 are pivoted in the first pivot direction 30 ; the lever element 113 is in the engaged position. If an external force is applied to the door leaf 1 in this position - represented by the arrow 37 - the slide 106 is at best shifted in the opening movement direction until the engagement device 129 formed by the second lever arm 121 with the hook nose 125 and the detection surface 127 has the edge 28 of the end stop 9 is detected. A further movement of the carriage 106 and thus a further opening of the door leaf 1 by external force is then no longer possible.

When the door drive 3 is actuated, the slide 106 is pulled over the toothed belt 5 in the opening direction of movement (arrow 170 ). Because of the resulting Zugbe load on the connecting rod 112 , the first lever arm 120 is pivoted in the second pivoting direction 31 until it strikes the inner wall 133 acting as a second stop device. In this case, the second lever arm 121 is pivoted together with the first lever arm 120 in the second pivoting direction 31 via the detection of the driver device 155 and is thus brought into the release position from the engagement position shown in FIG . So the carriage 106 can move without locking the Sperrvor direction 111 further in the opening direction 170 until the gate 2 is fully opened.

When it is closed again, the carriage 106 is moved against the opening movement direction 170 . The first lever arm 120 pivots again in the first pivoting direction 30 into the position shown in FIG. 4 and into the stop on the inner wall 132 . Now the door leaf 1 can be closed over the carriage 106 . The second He belarm 121 is pivoted due to the spring loading of the spring device 144 in its engagement position shown in Fig. 4. Once the run-up shoulder 125 edge, the limiting reached 28, the lever 121 to have to move along without the connecting rod 112 is pivoted counter to the spring load of the compression spring means 144 in the second pivotal direction 31 until the detection surface 127, the boundary edge has passed 28th The carriage 106 then continues to move until the end stop 9 is reached.

For an emergency release, the pulling device 135 is manually operated by pulling the cable bell 147 from the inside or the Bowden cable 142 from the outside. The Bowden cable 142 ends, for example, within an area that is not easily accessible by unauthorized persons outside the area to be locked. It is particularly important if the room to be locked is only accessible through the door opening to be locked.

Through the pull actuation, the unlocking lever element 143 pivots, releasing the slide 106 from the toothed belt coupling 36 , with its engagement area 156 the gripping surface 154 of the angled end area 153 of the third lever arm 152 and thereby pressing the second lever arm 121 out of its engaged position. Since, in this case, due to the separate design of the first and second lever arms 120 , 121, these two lever arms 120 , 121 are decoupled, the engagement device 129 can be brought out of its engagement position without the first lever arm 120 having to be moved. The door leaf 1 can then be pushed on or pulled open manually.

Due to the decoupling of the two lever arms 120 , 121 , an adjustment of the locking device 111 to individual circumstances is no longer necessary as precisely as was the case with previously known solutions. The second embodiment of the Spenvor device 111 is particularly characterized in that the second and the third lever arm 121 , 152 forming lever z. B. is biased by a compression spring in its engagement or locking position. This lever, which can also be referred to as a locking hook, is pivotably mounted on the first pivot axis 119 . A connection device for the door leaf, here in the form of the cheeks 162 , 163 for connecting the locking rod or connecting rod 112 , is pivotably supported to a limited extent about the first pivot axis 119 . The pawl lever 121/152 and the cheeks 162, 163 or the like pivotable connection device for Verbin extension rod 112 of the first pivot axis 119 to a certain extent with respect to pivot relative to each other. This pivoting movement is limited by the entraining device 155 - driver pin - which urges the locking hook lever 121 , 152 together with the pivoting of the cheeks 162 , 163 from the locking or engaging position when the connecting rod 112 and the slide 106 are pulled relative.

For the emergency release z. B. a lever system 134/143/140 is provided by means of which the locking hook lever 121 can be pressed 152 against the urging force of the spring 144 from its engaging position, whereupon the door leaf 1 is pushed manually or may be drawn on.

The locking device 111 which acts as an intrusion barrier or door security, has the locking hook lever 121/152 and two interconnected by the driver device 155, the driving pin forming cheeks 162, 163 in the illustrated example.

The locking hook lever 121 , 152 is held in the locking position by the compression spring 144. The locking hook lever and the cheeks 162 , 163 with the driving pin 155 can be pivoted about the first pivot axis 119 . The first pivot axis 119 is mounted in the slide 106 and secured against axial displacement with the pin 151 . FIG. 4 shows the position "Close".

When driving in the direction "gate closed", the cheeks 162 , 163 are supported with their cheek surfaces directed in the opening or closing movement direction of the carriage 106 on corresponding guide carriage surfaces - the inner walls 133 or 133 - from. The locking hook lever 121 , 152 is in the locking position or engaging position. Shortly before the "gate closed" position, the locking lug or hook lug 125 of the locking hook lever 121 , 152 moves on the raised edge 28 of the fixed end stop 9 and is thereby lifted up. When the hook nose 125 has passed the edge 28 , it again assumes the blocking position or the engaging position due to the urging force of the compression spring 144 .

When driving "gate open" (arrow 170 ), the cheeks 162 , 163 pivot about the first pivot axis 119 , the driving pin 155 takes the locking hook lever 121 , 152 with it, thereby pivoting the locking hook lever 121 , 152 about the first pivot axis 119 and the Hook nose 125 raised. The locking device 111 is unlocked. The "gate open" travel can take place without hindrance.

An emergency release - for example in the event of the door drive 3 failing - can be effected from the outside by means of the Bowden cable 142 or from the inside by means of the cable bell 147 or similar pulling cable. Both traction means 147 , 142 engage on the unlocking lever element 143 which is pivotable about the substantially vertical right axis 145 . When pulling on one of the pulling means 147 , 142 , the unlocking lever element 143 is rotated about the axis 154 . When actuating the unlocking lever - Entsperrhebelelement 143 - presses this with its on handle portion 156 to the oppositely directed engagement surface 145 of the latch lever 121, 152 in the manner that the locking hook lever 121 is brought out of its locking position or engagement position 152nd In an embodiment that is not shown, an additional device for holding the unlocking lever unlocked after the emergency unlocking has taken place would also be conceivable. After the locking hook lever 121 , 152 has been unlocked, the gate 2 can be opened manually.

In Figs. 6 to 8, a third embodiment is shown of a door drive with a third embodiment of a locking device 211. Parts that are unchanged from the previous embodiments are again identified by the same reference characters.

In the third embodiment of a locking device 211 shown in FIGS. 6 to 8, a coupling device 210 for coupling the door leaf 1 to a driver slide 206 in turn comprises the connecting rod 12 , which has a pivotable lever element in the form of a three-armed element limited by a first pivot axis 219 Lever 213 is coupled to the driver carriage 206 .

The lever 213 comprises a first lever arm 220 at the free end 223 of the connecting rod 12 is pivotally articulated about a second pivot axis 222 , a two-th lever arm 221 , at the free end portion 224 of which an engagement device 229 with a nose 225 is formed, and a third Lever arm 252 , which, comparable to the third lever arm 252 , has an engagement surface for a locking lever element 243 at an angled end region 253 .

As seen from Fig. 7, the lever 213 by two riveting plate-like elements by means of rivets 270 formed. The regions of the plate-like elements which form the first lever arm 220 are cranked, so that two cheeks 262 , 263 are formed which enclose the connection region of the connecting rod 12 .

The nose 225 has a detection surface 227 which, unlike the detection surfaces 27 and 127, is not an acute but rather angled. In addition, the nose 225 is provided with a run-on shoulder 226 .

To form an emergency release device 240 , an unlocking device 241 for unlocking the locking device 211 and a release device 234 for releasing the slide 206 from the toothed belt 5 are again provided. These two devices 234 , 240 are essentially formed by an unlocking lever element 243 comparable to the unlocking lever element 143 .

The unlocking lever element 243 can in turn be pivoted about a third pivot axis 245 via a pulling device 235 comprising a Bowden cable 242 and a cable bell 247 .

The difference between the emergency unlocking device 240 or more precisely the unlocking device 241 and the emergency unlocking device 140 of the second embodiment or the unlocking device 141 of the second embodiment can be seen in a direct, precise comparison of FIGS. 5 and 7. It follows that the bog-shaped elongated hole , in which the pin 249 or 149 for uncoupling the carriage 106 or 206 from the toothed belt coupling 36 is longer, and that the stand was between the engagement area 256 on the unlocking lever element 243 and an engagement surface 254 on the third lever arm made larger is form as the distance between the attack area 156 and the attack surface 154 in the second embodiment.

The release device 234 is explained in more detail below with reference to FIG. 8. There is shown the coupling or engaging pin 275 already explained above in the first two embodiments for coupling the carriage 206 to the toothed belt coupling 36 . The engagement pin 275 is penetrated by the pin 249 of the unlocking lever element 243 .

The function of the third embodiment of the locking device 211 is as follows:
In Fig. 6 the position "gate closed" is shown. If the door drive 3 is now actuated, the slide 206 is moved in the opening movement direction 170 by means of the toothed belt 5 . The resulting pull on the connecting rod 12 causes the lever 213 to pivot in the second pivoting direction 31 about the first pivot axis 219 . This Ver pivotal movement is limited by an acting as a second stop device Innenwan extension 233 of the slide housing 250 , whereupon a gate opening occurs when pulling the driver 206 in the opening movement direction 170 . In a against an in nenwandung 233 of the carriage housing 250 position of the lever 213 , the second lever arm 221 is unlocked, ie the engagement device 229 is in its release position; the gate can be opened freely.

If the movement of the door drive 3 is then reversed, the lever 213 pivots due to the thrust load on the connecting rod 12 in the first pivoting direction 30 into the position shown in FIG. 6, in which the first lever arm 220 adjoins a corresponding, first stop device Inner wall 232 of the slide housing 250 strikes. About the positive connection between the connecting rod 12 and the driver 206 then the gate 2 is closed . As soon as the start-up shoulder 226 reaches the edge 28 of the end stop, the lever 213 is pivoted so far that the nose 225 can slide over the edge 28 into the engagement position shown in FIG. 6. The closing movement then continues until the end stop 9 is reached by the carriage 206 . The gate is then closed. If a force is then applied to the door from the outside in this state, this acts as a pushing force - arrow 37 - on the connecting rod 12 . The driver 206 is thereby displaced in the opening movement direction 170 at most until the detection surface 227 reaches the edge 28 . The detection surface 227 is of blunt design, but since the thrust force 37 pushes the lever 213 into its engagement position, the boundary edge 28 cannot be overcome. However, the obtuse bend towards the boundary edge 28 has the advantage that a hooking of the nose 225 with the boundary edge 28 is ruled out even with large closing forces. In addition, the blunt bend reduces wear.

Although the first and second lever arms 220 , 221 in the third embodiment, in contrast to the second embodiment, are formed in one piece with one another, an emergency release can be carried out easily and safely. In the third embodiment, this is ensured by first uncoupling the slide 206 from the toothed belt 5 and - assured due to the greater distance between the engagement area 256 and the engagement surface 254 - only after the slide 206 has been completely uncoupled from the toothed belt Pushing the lever element 213 out of its gripping position. Since at this time, in which the lever 213 to be released for emergency release in the second pivoting direction 31 is to be pivoted, the carriage 206 has already been completely uncoupled, the displacement necessary for the pivoting movement between the carriage 206 and the connecting rod 12 can readily be achieved Be done by movement of the carriage 206 in the guide rail 7 .

The locking device 211 can thus be easily unlocked via the emergency release device 240 , the gate 2 can be opened manually.

In the third embodiment, the locking device 211 has a locking hook formed by the lever 213 , which is pivotable about the first pivot axis 219 . The first pivot axis 219 is mounted in the guide carriage 206 for the door leaf 1 and secured against axial displacement with a cam, not shown. Here ent speaks Fig. 6 the position "gate-on".

When traveling in the "gate-to" direction, the blocking hook formed by the lever 213 is supported with the surfaces of the cheeks 262 , 263 pointing in the opening movement direction 170 on a guide slide surface formed by the inner wall 232 . The locking hook or the lever 213 is in the locked position or the engaged position. Shortly before the "gate-to" position, the nose 225 of the locking hook or lever 213 moves onto the highest edge 28 of the end stop 9 and is thereby lifted up. When the nose 225 has passed the edge 28 , it returns to the engaged position due to the closing force of the gate 2 .

During the "gate open" travel, the lever 213 forming the locking hook pivots about the first pivot axis 219 , the nose 225 is raised. The system is unlocked. The "gate open" travel can take place without hindrance. The locking lever 213 is supported with its cheeks 262 , 263 on the inner wall 233 .

The emergency release is carried out by the Bowden cable 242 from the outside or by the Seilgloc ke 247 from the inside. The unlocking lever element 243 is rotatable about the axis 245 . Upon actuation of the spring-biased slider 243 Entsperrhebelelements or engaging pin is first by the pin 249 275 moved in the direction of arrow 280, and the carriage 206 is disconnected from the toothed belt coupling 36 of the gear belt. 5 When the unlocking lever 243 is actuated further, the distance between the engagement areas 256 , 254 is overcome, the unlocking lever 243 presses with its engagement area 256 onto the surface 254 of the lever 213 . The lever 213 forming the locking hook pivots about the first pivot axis 219 in the second pivot direction, the nose 225 is raised. The system is unlocked and gate 2 can be opened manually.

The third embodiment described here is particularly characterized in that the unlocking - ie the separation of the carriage from the motor drive unit - and the unlocking - ie the separation of the carriage 206 from the fixed end stop 9 - takes place in two phases in succession.

The nose 225 of the lever 213 forming the locking hook has an obtuse locking angle. This prevents the carriage 206 from getting caught when the door is "open" on doors with large closing forces.

The special features explained in relation to individual embodiments can - as far as they are not obviously mutually exclusive - as required to form further executions forms can be combined.

Claims (30)

1. Locking device for a by means of a motor drive unit drivable gate, in particular overhead gate ( 2 ), such as tilting, pivoting or sectional gate, which locking device ( 11 , 111 , 211 ) of a coupling device ( 10 , 110 , 210 ) for coupling the door leaf ( 1 ) is assigned to a driver ( 6 , 106 , 206 ) which can be moved back and forth by the motor drive unit, to the door leaf ( 1 ) in its closed state against movement in the opening direction ( 170 ) if not from the driver ( 6 , 106 , 206 ) blocking outgoing force ( 38 ) with:

• - A lever element ( 13 , 113 , 213 ) which can be pivoted indirectly or directly on the driver ( 6 , 106 , 206 ) about a first pivot axis ( 19 , 119 , 219 ) in a first ( 30 ) and an opposite second pivot direction ( 31 ). is held and ei ne engaging device ( 29 , 129 , 229 ) for detecting a preferably a guide device ( 7 ) for the driver ( 6 , 106 , 206 ) associated, stationary abutment element ( 9 , 28 ), so as to the door leaf ( 1 ) to lock, wherein the grip device ( 29 , 129 , 229 ) when pivoting the lever element ( 13 , 113 , 213 ) in the first pivoting direction ( 30 ) in the engaged position and when pivoting the lever element ( 13 , 113 , 213 ) in the second pivoting direction ( 31 ) can be moved from the engaging position into the release position, and
• - A rigid connecting element - preferably in the form of a connecting rod ( 12 , 112 ) - which, on the one hand or at one end, comprises a connecting device ( 37 , 14 ) to the door leaf ( 1 ) and on the other hand or at the other end about one of the first pivot axis ( 19 , 119 , 219 ) spaced apart second pivot axis ( 22 , 122 , 222 ) is pivotally connected to the lever element ( 13 , 113 , 213 ) in such a way that it is about the first pivot axis ( 19 , 119 , 219 ) when shear is applied to the door leaf ( 1 ) connectable orientation of the connecting element ( 12 , 112 ) in the first pivoting direction ( 30 ) and, in the event of tensile load, on the connecting element ( 12 ) in the orientation that can be connected to the door leaf, can be pivoted in the second pivoting direction ( 31 ),
  characterized by
  that the lever element ( 13 , 113 , 213 ) has two lever arms ( 20 , 21 ; 120 , 121 ; 220 , 221 ) which can be pivoted about the first pivot axis ( 19 , 119 , 219 ),
  that the connecting element ( 12 , 112 ) is articulated on the first lever arm ( 20 , 120 , 220 ) and
  that on the second lever arm ( 21 , 121 , 221 ) the engagement device ( 29 , 129 , 229 ) for gripping the abutment element ( 9 , 28 ) during or after pivoting of the lever element ( 13 , 113 , 213 ) and thus the second lever arm ( 21 , 121 , 221 ) in the first pivoting direction ( 30 ), which corresponds to sliding on the connecting element ( 12 , 112 ) connected to the door leaf ( 1 ), and to release the abutment element ( 9 , 28 ) during or after pivoting the lever element ( 13 , 113 , 213 ) and thus the second lever arm ( 21 , 121 , 221 ) in the second pivoting direction ( 31 ), which corresponds to a pull on the connecting element ( 12 , 112 ) connected to the door leaf ( 1 ), is provided.

2. Locking device according to claim 1, characterized in that the engagement device ( 29 , 129 , 229 ) by a hook ( 24 , 25 ; 125 ) or a Na se ( 225 ) on the side or end face of the second lever arm pointing in the first pivoting direction ( 21 , 121 , 221 ) is formed, which hook ( 24 , 25 ; 125 ) or which nose ( 225 ) for hooking or engaging behind the abutment element ( 9 , 28 ) during or after pivoting the lever element ( 13 , 113 , 213 ) in the first pivoting direction ( 30 ) and for releasing the abutment element ( 9 , 28 ) during or after pivoting of the lever element ( 13 , 113 , 213 ) in the second pivoting direction ( 31 ). 3. Locking device according to claim 1 or claim 2, characterized by

• - A first stop device ( 32 , 132 , 232 ) for limiting the pivoting of the lever element ( 13 , 113 , 213 ) in the first pivot direction ( 30 ) when the engagement position is reached, and / or
• - A second stop device ( 33 , 133 , 233 ) for limiting the pivoting of the lever element ( 13 , 113 , 213 ) in the second pivot direction ( 31 ) when the release position is reached.

4. Locking device according to one of claims 1 to 3, characterized by an emergency release device ( 40 , 140 , 240 ) by means of which the lever element ( 13 , 113 , 213 ) for manually opening the gate ( 2 ) can be brought out of the engaged position. 5. Locking device according to claim 4, characterized in that the emergency release device ( 40 , 140 , 240 ) for unlocking the locking device ( 11 , 111 , 211 ) and decoupling the door leaf ( 1 ) from the motor drive unit is formed and a release device ( 34 , 134 , 234 ) for releasing the driver ( 6 , 106 , 206 ) from the motor drive unit. 6. Locking device according to claim 5, characterized in that the release device ( 34 , 134 , 234 ), in particular via a manually operable pulling device ( 35 , 135 , 235 ; 142 , 242 ), manually from a normal position in which the participant is coupled to the motor drive unit, in a release position in which the driver is released from the motor drive unit, in particular from a traction element ( 5 ) assigned to it, pivotable unlocking lever element ( 43 , 143 , 243 ). 7. Locking device according to one of claims 4 to 6, characterized in that the emergency release device ( 40 ) has a biasing device, in particular spring ( 41 ), which biases the lever element ( 13 ) in its release position. 8. Locking device according to one of claims 4 to 7, characterized in that the emergency release device ( 140 , 240 ) comprises an unlocking device ( 141 , 241 ) by means of which the lever element ( 113 , 213 ) brought out of its engagement position or locking position, in particular can be pressed, whereupon the door leaf ( 1 ) can be pushed on or pulled open manually. 9. locking device according to claim 8 and claim 5 or 6, characterized in that the unlocking device ( 241 ) is designed such that when the t tentriegelungseinrichtung ( 240 ) is actuated only after the driver ( 206 ) has been completely released by the release device ( 234 ) pivots the second lever arm ( 221 ) from the engaged position into the release position. 10. Locking device according to claim 9 and 6, characterized in that the unlocking device ( 241 ) so arranged on the unlocking lever element ( 243 ), or is assigned to it, that it in the course of the pivoting movement of the unlocking lever element ( 243 ) from the normal position beyond the release position only after passing the release position by the unlocking lever element a region of the lever element ( 213 ) which can be pivoted together with the second lever arm ( 221 ) is detected in such a way that the second lever arm ( 221 ) is pivoted in the second pivoting direction ( 31 ). 11. Locking device according to one of claims 8 to 10 and according to claim 6, characterized in that the unlocking device ( 141 , 241 ) is formed by the unlocking lever element ( 143 , 243 ) itself, which via the pulling device ( 135 , 142 ; 235 , 242 ) is in particular manually pivotable and is coupled with a driver ( 106 , 206 ) to the traction means ( 5 ), the coupling pin ( 275 ), in particular preloaded in the coupling-in position, for releasing the same when the unlocking lever element is pivoted into the release position and an attack area for attacking on a corresponding engagement surface of the lever element ( 113 , 213 ) in order to pivot the second lever arm ( 121 , 221 ) from its engagement position into the release position. 12. Locking device according to claim 10 or 11, characterized in that the lever element ( 113 , 213 ) has a third lever arm ( 152 , 252 ) which with the second lever arm ( 121 , 221 ) for joint pivoting about the first pivot axis ( 119 , 219 ) is connected and protrudes into the pivoting range of the unlocking lever element ( 143 , 243 ), preferably in such a way that the third lever arm ( 252 ) with a lever element in the grip position ( 213 ) and with the unlocking lever element ( 243 ) in the normal position with such a distance of the protruding of the Entsperrhebelelement (243) in its pivot path, that it is detected only after pivoting the Entsperrhebelelements (243) from the normal position over the release position out of the Entsperrhebelelement (243) for pivoting into the second direction of pivoting (31). 13. Locking device according to one of claims 1 to 12, characterized in that a bearing element ( 15 ) for mounting the lever element ( 13 ) of the guide device ( 7 ) guided on the horizontally above the door leaf course to be arranged in the opening direction extending guide means ( 6 ) in intended use protrudes downwards, on which bearing element ( 15 ) the first pivot axis ( 19 ) seen in be in the appropriate orientation down from the horizontal guide track of the driver ( 6 ) is provided at a distance, and which bearing element ( 15 ) preferably with a bushing - Or socket-like or tubular, in particular rectangular tubular housing ( 18 ) is formed so that the front and / or rear of the first and / or second stop device are formed by the walls ( 32 , 33 ). 14. Locking device according to one of claims 1 to 12, preferably also according to claim 3, characterized in that the first pivot axis ( 119 , 219 ) within the driver ( 106 , 206 ) is mounted, preferably the first and / or second stop device are formed by Innenwandun gene ( 132 , 133 ; 232 , 233 ) of the driver. 15. Locking device according to one of claims 1 to 14, characterized in that the first lever arm ( 20 , 120 , 220 ) from the first pivot axis ( 19 , 119 , 219 ) in the intended orientation downwards, preferably substantially un th directed is so that its free end ( 23 , 123 , 223 ) moves when pivoting in the most pivoting direction ( 30 ) in the opening movement direction ( 170 ) of the driver ( 6 , 106 , 206 ). 16. Locking device according to one of claims 1 to 15, characterized in that the second lever arm ( 21 ) seen from the first pivot axis ( 19 ) in the intended direction upwards, preferably essentially upwards, is directed so that its free end ( 24 ) with the engagement device ( 29 ) when pivoting in the first pivoting direction ( 30 ) moves against the opening movement direction of the driver ( 6 ). 17. Locking device according to one of claims 1 to 16, characterized in that the lever arms ( 20 , 21 ; 228 , 221 ) of the lever element ( 13 , 213 ) integrally with one another or otherwise for joint pivoting in both pivot directions ( 30 , 31 ) rigidly to one another are connected. 18. Locking device according to one of claims 1 to 16, characterized in that the first ( 120 ) and the second ( 121 ) lever arm of the lever elements ( 113 ) are designed separately with one another, but are coupled to one another via a driver device ( 195 ), that the second lever arm ( 121 ) moves when pivoting the first lever arm ( 120 ) in one of the two pivoting directions ( 31 ) and is elastically biased into the detection position with the driver device, when the second lever arm ( 121 ) acts against the detection the driver device from the most lever arm ( 120 ) but decoupled is pivotable. 19. Locking device according to one of claims 1 to 16 or 18, characterized in that the first ( 120 ) and the second ( 121 ) lever arm pivot when the driver ( 106 ) moves in the opening direction ( 170 ) and when the driver ( 106 ) decoupled from each other in the closing direction, in particular are pivotable ver relative to each other. 20. Locking device according to one of claims 1 to 19, in particular according to claim 19, characterized in that the second lever arm ( 121 ) in the engaged position - preferably spring-loaded - is tensioned before. 21. Locking device according to one of claims 1 to 20, characterized in that the second lever arm ( 21 , 121 , 221 ) with its free end region ( 24 , 124 , 224 ) for forming the engagement device ( 29 , 129 , 229 ), in particular the Hook relative to the first lever arm ( 20 , 120 , 220 ), angled or curved essentially at right angles in the first pivoting direction ( 30 ), the end face of the end region ( 24 , 124 , 224 ) pointing in the first pivoting direction having a hooked nose ( 25 , 125 ) or the nose ( 225 ) with an engagement surface ( 27 , 127 , 227 ) for the locking engagement of the abutment element ( 9 , 28 ). 22. Locking device according to one of claims 1 to 21, in particular according to claim 2 or 21, characterized in that the engagement device ( 29 , 129 , 229 ) has a latching nose, in particular the hook nose ( 25 , 125 ) or the nose ( 225 ) is designed as a locking lug, which locking lug is provided with a start-up shoulder ( 26 ) on the side opposite the engagement or detection surface ( 27 , 127 , 227 ). 23. Locking device according to one of claims 1 to 22, characterized in that the engagement device ( 223 ) for detecting the abutment element ( 9 , 28 ) has an obtuse angled detection surface ( 227 ). 24. Locking device according to one of claims 1 to 23, characterized in that the abutment element ( 9 , 28 ) can be fastened at various points along the guide device ( 7 ) to the same. 25. Locking device according to claim 24, characterized in that the guide device is formed by a C-shaped guide rail ( 7 ), and that the abutment element ( 9 , 28 ) transversely bridging the C-groove or C-recess to which the C-groove or the C-recess bounding facing end areas of the C-profile can be clamped. 26. Locking device according to one of claims 1 to 25, characterized in that the abutment element ( 9 , 28 ) by a limiting device ( 9 ) which limits the closing movement of the driver ( 6 , 106 , 206 ) and thus defines its closed position or is included by such. 27. Locking device according to claim 26 and preferably also according to claim 25, characterized in that the abutment element is formed by a - in particular in the C-groove of the guide rail ( 7 ) - projecting edge ( 28 ) of the limiting device ( 9 ). 28. Locking device according to one of claims 1 to 27, characterized in that the connecting rod ( 12 ) is provided with a plurality of connection devices ( 37 a) for the optional connection to the door leaf ( 1 ) and / or the optional articulation on the first lever arm ( 20 ), in particular for bridging different distances between the door leaf ( 1 ) and the driver ( 6 ) depending on the installation situation. 29. Locking device according to claim 28, characterized in that the connecting rod ( 12 ) flat and elongated, in particular as a perforated plate, with several spaced in the longitudinal direction, as connecting devices for connecting the door leaf ( 1 ) and / or for articulating the connecting rod ( 12 ) on the first weaving arm ( 20 ) serving, preferably circular, openings ( 37 a) is formed. 30. door drive device ( 3 ), in particular for an overhead door ( 2 ), with a motor drive unit, a driver ( 6 , 106 , 206 ) which is driven by the motor drive unit, preferably by a traction means ( 5 ) coupled to the motor drive unit, is movable back and forth along a guide device ( 7 ) and a coupling device ( 10 ) for coupling the door leaf ( 1 ) to the driver ( 6 ), characterized in that the coupling device ( 10 ) is a locking device ( 11 ) according to one of the claims 1 to 29 comprises or is formed as such.