EP1418296B1 - Secured emergency unlocking device and use thereof - Google Patents

Abstract

Emergency unlocking device for uncoupling a motor-driven building closing device from a motor drive unit in an emergency comprises a securing device (24) securing the emergency unlocking device from unintentional or unauthorized actuation. Independent claims are also included for the following: (1) Building closing device drive comprising the above emergency unlocking device; and (2) Overhead door comprising the above emergency unlocking device. Preferred Features: The securing device has a blocking element (58) blocking movement or accessibility of a hand-actuating element (22) and released only by a tool, a key, or by damage.

Description

The invention relates to an emergency release device for a Gebäudeabschlussantrieb, as shown in the US 6 325 134 B1 is known. This document will be discussed in more detail below.

Emergency unlocking devices for uncoupling a motor-driven building closure of a motor drive unit in case of incidents are known in the market located gate drives. For building closures, such. B. gates, by a drive such. B. door drive or the like, are driven by a motor, it can in case of incidents such. As power failures or the like, occur that the completion of the building is held by the stationary drive. In principle, such self-locking is desirable in building closure drives from the point of view of burglary protection. In the event of power failures, this may also cause an authorized user to be locked out or locked up. In order nevertheless to be able to pass through the building closure, there is therefore the need to be able to decouple the building closure in the event of incidents from the drive. Many door operators on the market are therefore provided with such an emergency release device with which the driven conclusion, d. H. here the gate, from which drive in such cases decouple and can be opened or closed manually. This need exists in particular in the cases where the driven closure terminates the single access opening to the enclosed space or area.

From the above-mentioned US 6 325 134 B1 is a building completion in the form of a sectional door with a drive in the form of a Wellentorantriebes known. The Wellentorantrieb further has an emergency unlocking device with a coupling device for decoupling the drive from the driven Sektionaltorblatt. The drive and the coupling device are arranged above the door opening to be opened and thus at a location difficult to access, in a housing. The coupling device is connected by means of a connecting and transmitting device in the form of a cable with a mechanical actuator. The actuating device has a holder, by means of which the actuating device can be fastened in an easily accessible place, and an actuating member in the form of a pull handle. By proper pulling of the pull handle, the coupling device and thus the emergency unlocking device can be actuated via the connection and transmission device, so that the sectional door leaf can be uncoupled from the drive for the purpose of manual movement. By train on the manual actuator, ie the pull handle, the emergency release is operable in any position of the building completion, which brings the dangers explained below in more detail. Within the housing, in not accessible place, is at the out of the US 6 325 134 B1 known sectional door provided a securing device for securing the emergency release device against unauthorized operation. This securing device is provided on the connection and transmission device and designed such that the pull rope has a thickening, which only fits in pulling the pull cable in a straight direction through an associated opening. But if you pull the pull rope not in the direction of the pull rope, but laterally thereto, as could happen in an attempted burglary by a beaten through a broken window hook, then the thickening reaches outside the center of the opening and canted when moving at the Öffnungsberandung. However, the emergency unlocking device can always be actuated in the intended manner by a pull on the pull handle. The known emergency unlocking device is thus secured only against unauthorized operation.

A dangerous situation may occur in an emergency release of over movable building closures, such as overhead doors, lifting gates, swing gates or the like, or other crowding in their closed building closures. Namely, when an open overhead door, the driven door leaf detached from the this holding drive, the door leaf can fall down due to its gravity.

Although many such building completions are provided with a weight compensation device that reduce this risk. But such weight compensation devices can also fail due to fatigue or incorrect operation, for example by breaking a spring used to balance the weight. In such a case, the uncoupled door leaf falls down in an uncontrolled manner and could fall underneath Damage the object or injure a person underneath. There are therefore already over-the-top doors on the market, which have a weight compensation device and in addition a catching device, which prevent the door leaf in case of failure of the counterbalancing device from falling. In such gates, the risk of falling when operating an emergency release device and thus initiated decoupling from the door drive is mitigated. Such a construction is complex and expensive.

Also, there is already a door drive for overhead doors on the market, which allows a disconnection of the door leaf only in its closed position. For this purpose, a track simulator is provided on the door drive, which indicates the respective door leaf position. This too is complicated and expensive.

The object of the invention is to provide an emergency unlocking device of the type mentioned in a simple and cost-effective manner such that the risk of damage or injury are reduced by falling in their closed position building wing when decoupling of Gebäudeabschlußflügels, and this in particular with less expensive constructed building completions.

This object is achieved by an emergency unlocking device with the features of claim 1.

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

A building closure drive provided with such an emergency unlocking device and an over-head door provided therewith are specified in the dependent claims.

In order to operate the emergency unlocking device, so you must first solve the safety device. Therefore, in addition to the operation of the emergency unlocking device, another step must be carried out consciously here. The user is forced to think about it. This avoids frivolous actuation of the emergency unlocking device, which, under unlucky circumstances, could result in the building closure wing crashing with negative consequences.

The safety device according to the invention makes it possible that the building completion can be disconnected in any, so even in a raised position. While previous emergency locking devices provided that the building closure can be decoupled only in the closed position, the invention here goes another way; Uncoupling can be readily made anywhere. However, the uncoupling device is secured, so that it is ensured that the unlocking is done consciously. This is a similar principle as an emergency brake in a train. This can also be used at full speed, which could injure people. The emergency brake is secured by seals or the like. The user is therefore reminded that he is doing something not normally allowed here. This principle is also used in the emergency release device according to the invention. It is preferable to decouple the emergency unlocking device in each door position. But if this were done when the building was raised, it could possibly crash. However, dangers are prevented by the operator knowing what he is doing here.

The amazing thing is that the ever stricter safety requirements are met by such a simple and cost-effective measure, while the hitherto necessary complex structures can be saved and that in addition there is the advantage that you can unlock a semi-open building closure in case of failure can completely close or open the building closure until the fault is rectified.

According to an alternative of the invention, the securing device can be released only with the use of tools. Under tool here is not just standard tool such as a screwdriver or a wrench to understand. The tool could also be a mechanical or electronic key with which a lock unlocking the emergency unlocking device is actuated. In view of the fact that the corresponding electronic components are becoming increasingly cheaper, one could also provide a combination of pushbuttons for entering a code as a safety measure. Alternative solutions provide that the safety device is only solvable destruction, that the safety device is accessible only with the use of tools or key insert for loosening or that the safety device accessible only with destruction to loosen is. The safety device could, for example, also have a wire seal, which, similar to the emergency brake in railway trains, blocks inadvertent or unauthorized actuation of the emergency release device. A glass pane is also conceivable, which covers an actuating device for actuating the emergency unlocking device and must first be hammered in before the emergency unlocking can take place.

The emergency release device could be designed differently. To ensure that it also works in cases of incidents such as power failures, a (purely) mechanical training is preferred. According to the invention, the emergency unlocking device therefore has a mechanical actuating device which is manually movable for actuating the emergency unlocking device.

More preferably, the emergency unlocking device - as generally known - a coupling device which removably couples a self-locking motor drive unit to the driven building or building closure wing. For uncoupling this coupling device is released by pressing the emergency release. Such coupling devices are naturally in the course of the drive train between a motor and the building closure wing and thus at overhead doors in a difficult to reach place. Therefore, in a preferred embodiment, a connection and transmission device is provided which connects an actuating device of the emergency unlocking device with the coupling device. Such an actuator may thus be attached to an easily accessible location. Despite the easy accessibility, unintentional actuation is avoided by the safety device.

For this purpose, it is provided that the securing device blocks the mobility of the actuator. In alternative or additional training, the safety device can also block access to the actuator, as explained above with reference to the example of a shut-off glass.

For securing the actuating device in an easily accessible location a holder is further provided according to the invention. In this embodiment, a manually movable actuating member is mounted on this holder, the movement of which can be transmitted by the connecting and transmitting device to the coupling device and thus initiates the coupling.

According to the invention the securing device further comprises a locking member which blocks the movement or the accessibility of the manual actuating member. The locking member is preferably designed such that it releases the movement or the accessibility of the manual actuating element only by means of a tool insert. Alternatively, seals, cotter pins, glass panes or the like are provided, which release the mobility or accessibility of the manual actuator only under their own destruction.

To avoid a risk of jamming in the emergency unlocking device, d. H. in particular in the actuating device, to avoid the connection and transmission device or in the coupling device is further preferred when the emergency unlocking device is mechanically biased in a normal operating position, in which the building closure is coupled to the motor drive unit. By the actuating device, the emergency unlocking device is then actuated against this biasing force. This can be realized, for example, in that the transmission and connection device has a spring unit for biasing the emergency release device in the normal operating position. Now it can happen that at times a permanent decoupling of the building closure wing is desired. For this purpose, a holding device is provided in a preferred embodiment, by means of which the actuating device against the bias in an operating position can be fixed. In such an embodiment, the emergency unlocking device can be brought into the actuated position by means of the actuating device and then fixed by means of the retaining device. As a result, the building closure remains uncoupled and can be moved by hand. In this way, an operation of the emergency release device despite its bias is made possible by a single person.

As a manual actuator, for example, serve a pull handle. The transmission and connection device can be formed by a traction means, for example a Bowden cable with a traction means guided in an envelope.

As a locking member, a screw may be provided which determines the manual actuating element on the holder of the actuator. To operate the emergency unlocking then you have to first loosen the screw. Despite loosening the screw, the emergency release device remains initially due to their bias in the normal operating position. After loosening the screw to move the manual actuator and thus triggers the disengagement. The operator must therefore consciously perform several steps here, and she will also consider why the manual actuator is secured in this way.

This can be supported by the fact that appropriate tool for releasing the locking member is stored in a similar manner secured next to the actuating direction. Preferably, a manual with warning in the vicinity of the actuator is attached. If a user then wants to operate the emergency unlocking device, this will initially not work because of the safety device. He will then consult the appropriate instruction manual to warn of the risk of building shutdown and how to unlock the building closure while avoiding the risk of damage or injury by clearing the path of the building closure prior to operating the emergency unlocking device ,

Due to the emergency unlocking device according to the invention thus the risk of accidental closure of the building upon actuation of the emergency unlocking device is also avoided if a counterbalancing device should have failed or should be disturbed. It is therefore possible to use the emergency unlocking device according to the invention also on mobile building closures that are movable over the head and that are not provided with a fall arrest device. According to universal a provided with such an emergency release device building closure drive is used and correspondingly lower is the cost of a such an emergency unlocking device using building closure.

Now, if the actuator is provided with a thread or a clamping portion for receiving the screw serving as a securing member, it may remain after loosening the attachment to the manual actuator and is not lost. A second thread is preferably provided on the holder, so that the manual actuating element can be fastened securely with the screw.

Multiple equally effective solutions are conceivable. The actuator could also have a locking pin which is fixed by a nut on the bracket or elsewhere.

Particularly preferably, the emergency release device is part or accessory to a Wellentorantrieb. This refers to door drives which are connected directly to a door shaft coupled in a geared manner to a door leaf to be moved. If the door shaft is rotated due to the Wellentorantriebes, as well as the door leaf is moved. Such Torwellen also often serve as part of a weight balancing device, wherein a torsion spring is connected at one end stationary and the other end to the door shaft. It is already known in principle to provide such shaft-type drives with a self-locking worm gear and a clutch device provided in a unit with the engine. The coupling device releasably couples an output shaft of the Wellentorantriebes to the worm gear. To actuate the coupling device may be provided on the motor housing, a transmission. On such a transmission can preferably connect the connection and transmission device, which transmits the movement of the easily accessible arranged hand actuator on the lever.

An advantageous attachment possibility for the spring unit, which biases the emergency unlocking device in its normal operating position, is to provide it at one end of the Bowden cable used as a transmission and connecting device. If, for example, a helical compression spring is used as an extension of the sheath, this is, on the one hand, a very simple solution. At the same time, such a surrounding helical compression spring also protects the otherwise exposed at this end traction means against adverse effects from the outside.

The holder of the actuating device is preferably provided with a fixedly fixed fastening element and the retaining device for fixing the emergency release device in their Auskuppelstellen. Preferably, the fastening element and the retaining device in a selectable arrangement are mutually adjustable and fastened to each other. This can on the one hand an adaptation to different local conditions are created. On the other hand, it can adjust the fixation.

In a concrete preferred embodiment, the retaining means may comprise a U-shaped retaining element or be formed by such. Due to its U-shape, this holding element comprises two legs and a bridge between them. On the one leg, a first receiving device for the Bowden cable can be formed. On the other leg may be provided a second receiving device for the converted into the operating position manual actuator. The web can be provided with a slot which allows a continuously selectable adjustable arrangement of the retaining element relative to the fastening element. The web of the retaining element and the fastening element are preferably displaceable relative to each other in engagement and fixed to each other by means of a fastener. This can also be realized by the slot through which the fastener is passed.

This fastener may preferably have several functions at once. On the one hand, it can serve for fixing the retaining device to the fastening element; on the other hand, it can also serve as an abutment for the securing element. For this purpose, the fastener preferably has a Zwischenelemen with two threaded openings. In the one threaded opening can then be added a fixing screw for fixing the retaining element and the fastener. In the other threaded opening acting as a securing member screw may be added. The intermediate element may be formed as a sleeve and have a through opening, the two ends serve as the threaded openings just described.

The holder is preferably designed for an optional attachment to the left or right inner side edge of the opening to be closed by the building closure. For example, the holder is suitable for an optional attachment to a left and to a right vertical spar of a frame to be driven by the Gebäudeabschlussantrieb over-head gate. As a fastener of the holder is preferably an elbow with several substantially perpendicular to each other walls. Preferably, three such substantially mutually perpendicular walls are provided. At a transitional edge between these walls, a passage opening for passing through the retaining element may be provided. Such an aperture is preferably provided on two of the edges in the previously described three-walled elbow, to allow for either left or right attachment. For the same purpose, the holding element of the holder is preferably formed symmetrically to a center line extending transversely through the web.

The receiving openings of the holding element are preferably arranged laterally offset from the longitudinal center line. By optional use in one or the other of the possible symmetry alignments thus an offset of the Bowden cable guide and / or provided for fixing the receiving opening is possible. The three-walled angle piece of the holder further preferably has on at least one of the walls at least one, preferably two attachment openings for the wall attachment. All these attachment openings on the two walls are preferably on one level. The attachment openings of the non-wall mounting wall portion can then be used as an abutment for the fastener and / or the securing member. The third wall preferably has at least two openings for the attachment of the corresponding end of the Bowden cable. Again, preferably, a plurality of openings are provided in order to adapt the actuator to different local conditions.

Fig. 1

eine schematische perspektivische Ansicht eines Gebäudeabschlussantriebes in Form eines Wellentorantriebes mit einer Notentriegelungsvorrichtung.

Fig. 2

eine perspektivische Explosionsdarstellung einer Betätigungseinrichtung und einer Verbindungs- und Übertragungseinrichtung der in Fig. 1 gezeigten Notentriegelungsvorrichtung;

Fig. 3

eine perspektivische Ansicht der Betätigungseinrichtung und der Verbindungs- und Übertragungseinrichtung in zusammengesetzter Form;

Fig. 4

eine perspektivische Darstellung der Verbindungs- und Übertragungseinrichtung von Fig. 3;

Fig. 5

eine Seitenansicht der Betätigungseinrichtung in einer ersten Einstellung bei minimalen Hub;

Fig. 6

eine Vorderansicht der Betätigungsrichtung;

Fig. 7

eine Seitenansicht der Betätigungseinrichtung in einer anderen Einstellung bei maximalem Hub;

Fig. 8

eine Vorderansicht der Betätigungseinrichtung in der Einstellung mit maximalem Hub gemäß Fig. 7;

Fig. 9

eine perspektivische Darstellung der Betätigungseinrichtung mit Verbindungs- und Übertragungseinrichtung in einer zur Entkupplung vorzunehmendenden Betätigungsstellung;

Fig. 10

eine Seitenansicht der Betätigungseinrichtung mit Verbindungs- und Übertragungseinrichtung in der Betätigungseinstellung gemäß Fig. 9;

Fig. 11, 12

schematische perspektivische Darstellungen verschiedener Einstellungs- und Befestigungsmöglichkeiten einer Halterung der Betätigungseinrichtung.

An embodiment of the invention will be explained in more detail with reference to the accompanying drawings. It shows:

Fig. 1

a schematic perspective view of a Gebäudeabschlussantriebes in the form of a Wellentorantriebes with an emergency release device.

Fig. 2

an exploded perspective view of an actuator and a connecting and transmitting device of in Fig. 1 shown emergency release device;

Fig. 3

a perspective view of the actuator and the connecting and transmitting device in an assembled form;

Fig. 4

a perspective view of the connection and transmission device of Fig. 3 ;

Fig. 5

a side view of the actuator in a first setting at minimum stroke;

Fig. 6

a front view of the actuating direction;

Fig. 7

a side view of the actuator in another setting at maximum stroke;

Fig. 8

a front view of the actuator in the setting with maximum stroke according to Fig. 7 ;

Fig. 9

a perspective view of the actuating device with connecting and transmitting device in a be taken for decoupling operating position;

Fig. 10

a side view of the actuator with connecting and transmitting device in the actuation setting according to Fig. 9 ;

Fig. 11, 12th

schematic perspective views of various settings and mounting options of a holder of the actuator.

In Fig. 1 is a Gebäudeabschlussantrieb shown in the form of a Wellentorantriebes 2 with an emergency release device 4. The Wellentorantrieb 2 has an electric motor 6, which is housed in a motor housing 7, and housed in a transmission housing 8 gearbox 9. The motor housing 7 and the gear housing 8 form a unit. The transmission 9 comprises a (not shown) self-locking worm gear and directs the rotational force of the motor 6 to an output shaft 10. To the output shaft 10, a door shaft (not shown) can be connected, the getrieblich with an at least partially vertically moving door leaf (not shown) is coupled.

Between the output shaft 10 and the worm gear of the transmission 9, a coupling device 11 is connected. Such an arrangement is basically known and therefore not shown here. The coupling device 11 is merely indicated by a lever 12, via which the coupling device 11 can be released in such a way that the output shaft 10 is decoupled from the worm gear. In the in Fig. 1 illustrated position of the lever 12 is the coupling device 11 in a normal operating position, in which the output shaft 10 and the transmission 9 and thus also the motor 6 are coupled together. By movement of the lever 12 in the illustration according to Fig. 1 downwards, the coupling device 11 is disengaged and the output shaft 10 is decoupled from the motor unit formed by the gear 9 and the motor 6.

The emergency unlocking device 4 comprises, in addition to this coupling device 11 with the lever 12, a mechanical actuating device 14 and a connecting and transmitting device 16. By the connecting and transmitting device 16 an actuation of the arranged on a comfortably accessible point actuator 14 is transmitted to the lever 12.

In the following, the detailed structure of the clutch actuating unit 18 formed by the actuator 14 and the connecting and transmitting device 16 will be described with reference to FIGS Fig. 2-4 explained in more detail.

The actuating device 14 has a holder 20 and a manually movable actuating member in the form of a pull handle 22 and a securing device 24. The connection and transmission device 16 has a Bowden cable 26, a spring unit 27 and a second holder 28.

The Bowden cable 26 is provided at its the Wellentorantrieb 2 associated end with an eyelet member 30 which is fastened by means of a locking pin 31 to the free end of the lever 12. The traction means of the Bowden cable 26 formed by a wire 32 is guided by a helical compression spring 29 which is inserted between the eye member 30 and the second holder 28.

The second holder 28 is as shown Fig. 1 can be fastened to the transmission housing 8 with a screw 33. On the second bracket 28, a drive-side end of a sheath 34 of the Bowden cable 26 is attached in a conventional manner. The other end of the sheath 34 is fixed to the first holder 20, and the corresponding end of the wire rope 32 is fixed to the pull handle 22 by means of a sleeve 35 and a grub screw 36.

The first holder 20 has a retaining device 38 and a fastening element 40.

The retaining device 38 is formed by a U-shaped retaining element 41. The holding element 41 has two legs 42 and 43 and a web connecting them 44. It is formed symmetrically to a transverse to the middle of the web 44 parallel to the legs 42, 43 extending center line. The web 44 has a slot 45 in the middle.

The two legs 42, 43 are not aligned symmetrically with respect to a through the web 44 and the slot 45 extending longitudinal center line, but arranged offset to one side in the manner of a crank. The two legs 42 and 43 have at their free ends in each case a receiving opening 46, 46 '. The receiving openings 46, 46 'are each formed so as to have a wide inner area with a narrow passageway open to the outside.

The receiving opening 46 'of the first leg 42 serves as a guide for the Bowden cable 26. Here, the envelope 34 is inserted through the narrower channel in the wide opening. The second leg 43 is associated with the pull handle 22. The receiving opening 46 of the second leg 43 serves to fix the pull handle 22 in an extended position in which the wire 32 is tightened accordingly and thus the lever 12 is actuated. This will be explained in more detail hereafter.

The fastening element 40 is formed by an elbow 48 with three substantially mutually perpendicular walls 49, 50 and 51. The angle piece 48 is formed symmetrically to a total of the common corner point of the walls 49, 50 and 51 extending diagonal plane through the wall 51. The two walls 49 and 50 each have two mounting holes 52, which serve depending on the type of fastening for wall mounting or for securing the retaining device 38. At each edge of these two mounting holes 52 having walls 49 and 50 to the third wall 51 an elongated passage opening 53 is provided through which the holding element 41 can be inserted. The third wall 51 is provided in the region of the free corner with two holes 80, which can serve as an abutment for the Bowden cable 26. At one of these holes 80, a threaded sleeve 61 of the Bowden cable 26 is screwed tight.

The holding element 41 and the angle 48 are mutually displaceable and fixable to each other by a fastener 54 in an optionally adjustable arrangement. For this purpose, a fixing screw 55 of the fastener 54 is guided through one of the fastening openings 52, here in the wall 50, and through the slot of the retaining element 41 and attached to an intermediate element, here in the form of a threaded sleeve 56 with hexagonal outer circumference.

The securing device 24 secures the pull handle 22 and thus the entire emergency release device 4 against unintentional or unauthorized operation. She has a security member in the form of a screw 58, by means of which the pull handle 22 in the normal operating position of the emergency release device 4 can be clamped. This is preferably done in such a way that to loosen the screw 58, a tool, such as a wrench, or the like is necessary.

In the illustrated embodiment, the screw used as a securing member 58 also engages the thus serving as an intermediate element threaded sleeve 56. The threaded sleeve 56 is provided at its two ends with an opening for receiving the screws 58, 55. Specifically, the threaded sleeve 56 has a through-threaded through hole at both ends of the two screws 58, 55 can be accommodated.

Fig. 3 shows the assembled and secured state of the Kupplungsbetelfgungseinheit 18. The pull handle 22 is fixed by the screw 58 fixed to the first bracket 20. In order to operate the emergency unlocking device 4, first the screw 58 must be solved.

Fig. 4 shows the connection and transmission device with their individual parts. The eyelet member 30 is formed by a towing eye which is crimped to the wire 32 for at least 800N traction. The sheath 34 is formed by a flat wire sheath. The flat wire sheath can be selected according to the requirements of different lengths, conceivable lengths are 1.5 to 13.5 m. Preferred lengths are 2m, 3m, 4m and 13m. The length of the wire rope 32 corresponds to the length of the flat wire sheath 34 plus the required for the helical compression spring 29 and the terminals including the pull handle 22 length, which is for example between 10 and 500 mm, preferably at 250 mm.

For attachment of the Bowden cable 26 one of the two envelope ends is firmly pressed with a screw 60. At the other end a loose screw 61 is provided. The two threaded sleeves 60 and 61 are secured by nuts 62 to the brackets 28, 20.

Based on Fig. 5-8 In the following, a stroke adjustment of the retaining device 38 will be described. The Fig. 5-8 each show the actuator 14 once from the side and once from the front. The actuator is in the FIGS. 5 and 6 in e-ner Setting with minimal pull stroke and in the FIGS. 7 and 8 shown in a setting with maximum stroke.

As explained above, the retaining device 38, more precisely its retaining element 41 can be displaced relative to the fastening element 40 and fastened in an optionally stepless arrangement by means of the fastener 54. This results in a different stroke length H between the normal operating position of the pull handle 22 and the actuating position, wherein the pull handle 22 is fixed by insertion of the wire 32 into the receiving opening 46 of the leg 43.

These fixed in the operating position show the two photos according to FIGS. 9 and 10 , There, the screw 58 has been rotated out of the threaded sleeve 56. Since the pull handle 22 is provided in its screw 58 receiving opening with a clamping area, the screw 58 does not fall down. To form the clamping area, the screw 58 receiving opening of the plastic pull handle is made slightly narrower than the outer diameter of the threaded shaft of the screw 58. With such a released securing device 24, the pull handle 22 can then be tightened by hand. This is done against the compressive stress of the helical compression spring 29. This tries to move the pull handle 22 back to its normal operating position. The pull handle 22 can now be tightened so far that the wire 32 can be guided into the receiving opening 46 of the leg 43. As a result, the pull handle 22 and thus the entire emergency release device 4 is fixed in the operating position. By corresponding displacement of the retaining element 41 via its slot 45 relative to the fastening element 40, the stroke H, with which such a fixation takes place, can be adjusted continuously selectable, in order to be able to adapt the actuating device 14 to different coupling strokes or different transmission paths. This is in the Fig. 6 and 8th represented by the different strokes H1 and H2. In this case, the holding element 41 is also guided along the Bowden cable 26, which has been introduced into the receiving opening 46 'of the leg 42. The corresponding different distances A1 and A2 are off Fig. 5 and 7 seen. The adjustment of the stroke allows in particular an adjustment of the actuator 14 to different Bowdenzuglängen. When using a longer Bowden cable 26 a larger stroke for safe unlocking is necessary than for a shorter Bowden cable 26. To set the complete emergency release 4 is mounted first. The pull handle 22 is pulled until it is unlocked at Wellentorantrieb. The holding element 41 is displaced relative to the fastening element 40 in such a way that it holds the pull handle 22 in one position th which ensures the unlocking. Subsequently, the two elements 40 and 41 are fixed to each other by means of the screw 55 and the threaded sleeve 56.

The fastening element 40 can be fixed in place by fastening screws 64, which are guided through the fastening openings 52. Preferably, a fastening takes place on a vertical Zargenholm the driven door. It is advantageous if, depending on the engine arrangement and / or other local conditions optionally a left or right mounting option is given. This is achieved by the symmetrical design of the retaining element 41 and the fastening element 40. One can either use either the wall 49 or the wall 50 for securing the retaining element 41 and securing the pull handle 22. The respective other of these walls 50, 49 is fixed by means of the fastening screws 64 fixed.

The various adjustment possibilities of the fastening element 40 and the retaining element 41 are in the FIGS. 11 and 12 indicated. Fig. 11 shows the left-side mounting option and Fig. 12 the right-side attachment possibility.

The structure described here allows the attachment of the shaft drive to gates that are not provided with a spring break safety device or fall protection. Due to the security device, injuries to persons or damage to objects by door crashes are avoided even when used on such unsecured gates, just because the safety device can only be solved consciously.

Claims (23)

1. Emergency release device (4) for the drive (2) of a building closure, for uncoupling a motor-driven building closure from a drive motor assembly unit (6, 9) in the event of malfunction, having:

   a securing device (24) for securing the emergency release device (4) against one method of actuation,

   a mechanical actuating device (14) that is manually movable in order to actuate the emergency release device (4),

   the actuating device (14) having a mount (20) by means of which it can be immovably fixed in an area that can easily be reached by an operator, and

   comprises a manual actuating member (22) movable relative to the mount (20), movement of which, in the intended manner, actuates the emergency release device (4),

   characterised in that
   the securing device (24) comprises, for the purpose of securing the emergency release device against unwanted actuation, a locking member (58) which blocks the intended movement of or access to the manual actuating member (22) and releases it only by the use of a tool, key and/or by its own destruction.
2. Emergency release device according to claim 1, characterised in that it can be actuated in any position of the building closure.
3. Emergency release device according to one of the preceding claims, characterised by a connecting and transmitting device (16) which connects the actuating device (14) to a coupling device (11) that releasably couples the building closure to the drive motor assembly unit (6/9) and transmits a movement of the actuating device (14) to the coupling device (11) in order to release the latter.
4. Emergency release device according to one of the preceding claims, characterised in that the locking member is or comprises screw fixing means, particularly a screw, more particularly a hexagonal screw (58).
5. Emergency release device according to one of the preceding claims, characterised in that in a normal operating position in which the building closure is coupled to the drive motor assembly unit (9/6) the device is mechanically biased into a normal operating position and can be actuated counter to the biasing force by the actuating device (14).
6. Emergency release device according to claim 5, characterised in that the transmitting and connecting device (16) comprises a spring unit (27) for biasing the emergency release device (4) into the normal operating position.
7. Emergency release device according to claim 5 or 6, characterised by a fixing device (38) by means of which the actuating device (14) can be fixed in an actuating position counter to the biasing.
8. Emergency release device according to one of the preceding claims, characterised in that the actuating device (14) comprises a pull handle (22) as the manual actuating member, which is connected to tensioning means (32) of the transmitting and connecting device (16).
9. Emergency release device according to claim 4, characterised in that the locking member is a screw (58) which secures the manual actuating member (22) to the mount (20) of the actuating device (14).
10. Emergency release device according to claim 9, characterised in that the manual actuating member (22) and/or the mount (20) is provided with a thread or a clamping region for receiving the screw (58) acting as a locking member.
11. Emergency release device according to claim 3 or according to one of claims 4 to 10, where dependent on claim 3, characterised in that the coupling device (11) is arranged in a geared motor housing (8, 7) of a sectional door drive (2) and couples a self-limiting gear (9) of the sectional door drive (2) to a driven shaft (10) of the sectional door drive (2).
12. Emergency release device according to claim 3 or according to one of claims 4 to 11, where dependent on claim 3, characterised in that the transmitting and connecting device (16) comprises a Bowden cable (26) with tensioning means (32) guided in a sheath (34).
13. Emergency release device according to claim 6 and claim 12, characterised in that the spring unit (27) is provided at one end of the Bowden cable (26) and biases the tensioning means (32) relative to the sheath (34).
14. Emergency release device according to claim 7 or according to one of claims 7 to 13, where dependent on claim 7, characterised in that the mount (20) comprises a fastening element (40) which is to be immovably fixed and the fixing device (38) which is fixed to the fastening element (40) in a selectable arrangement.
15. Emergency release device according to claim 7 or 14 and claim 12 or 13, characterised in that the fixing device (38) has a U-shaped holding element (41) with two legs (42, 43) and a crosspiece (44) between them, one leg (42) having a first receiving device (46) for the Bowden cable and the other leg (43) having a second receiving device (46) in which the manual actuating member (22) moved into the actuating position can be fixed.
16. Emergency release device according to claim 14 and 15, characterised in that the crosspiece (44) of the holding element (41) and the fixing element (40) engage with one another so as to be movable relative to one another and can be fixed relative to one another by a fastener (54).
17. Emergency release device according to claim 16 and claim 4 or 9, characterised in that the fastener (54) comprises an intermediate element, particularly a sleeve (56), with two threaded openings, one of which accommodates a fixing screw (55) that fixes the holding element (41) and the fixing element (40) relative to one another, while the other accommodates the screw (58) acting as a securing member of the securing device (24), for fixing the manual actuating member (22) to the intermediate element (56).
18. Emergency release device according to one of the preceding claims, characterised in that the mount (20) is suitable for either left-hand mounting, in which it is accessible from the left-hand side, or for right-hand mounting, in which it is accessible from the right-hand side, on an edge of a vertical opening in a building or premises or on the corner of a wall.
19. Emergency release device according to one of the preceding claims, characterised in that the holding element (41) of the mount (20) is of symmetrical construction to a central line extending at right angles to its longitudinal extent.
20. Emergency release device according to one of the preceding claims, characterised in that the fixing element (40) of the mount (20) is an angle member (48) having three walls (49 - 51) extending substantially at right angles to one another, wherein on two of the three transitional edges between the walls (49 - 51) an opening (53) is formed for selectively passing the holding element (41) through, and wherein on two (49, 50) of the walls (49 - 51) two openings (52) are formed which can be used, as desired, for a wall mounting or for fixing a securing member (58) of the securing device (24), and on the third wall (51) at least one opening (80) is provided for fixing the connecting and transmitting device (16).
21. Building closure drive (2) for driving a closure for a building or premises, characterised by an emergency release device (4) according to one of the preceding claims.
22. Building closure drive according to claim 21, characterised in that it is constructed as a sectional door drive (2) for attachment to a door spindle in geared connection with a door panel, and comprises a motor (6), a self-limiting gear (9) attached thereto as a drive motor assembly unit, a driven shaft (10) and a coupling device (11) connected between the driven shaft (10) and the gear (9) and releasable by means of a coupling lever (12).
23. Up-and-over door having a door panel which can be motor-driven overhead by a door drive (2), characterised by an emergency release device (4) according to one of the preceding claims or a building closure drive according to one of the preceding claims constructed as a door drive (2).

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