WO2007138009A1 - Building closing drive comprising an emergency unlocking device - Google Patents

Abstract

The invention relates to a building closing drive (2) comprising an emergency unlocking device (4). According to the invention, in order to ensure that the emergency unlocking device (4) can be actuated in a simple manner without delay and also after a long period of non-use, traction means for actuating the emergency unlocking device are guided in a pulley-like manner over at least one loop.

Description

 ASSEMBLY CLOSURE DRIVE WITH EMERGENCY RELEASE DEVICE

The invention relates to a building closure drive according to the preamble of the appended claim 1, as it is known from DE 102 56 480 A1 or DE 103 55 667 A1.

From the two documents DE 102 56 480 A1 and DE 103 55 667 A1 each a building closure drive in the form of a Wellentorantriebes is known. The Wellentorantrieb has an electric motor and a self-locking gear. The transmission directs the torque of the engine to an output shaft. To the output shaft is a door shaft of a gate, such as a sectional door, connectable. Such a door shaft is, for example, a torsion spring shaft of a sectional door, which is connected via cables by means of the door leaf such that the door shaft rotates upon movement of the door leaf. At the door shaft, for example, a torsion spring is articulated, which biases the door shaft in the direction of rotation corresponding to the opening movement of the door leaf. In this way, a weight compensation device is created. Such a sectional door with a torsion spring shaft is shown and described in more detail in EP 1 426 538 A2. Furthermore, it describes exactly how the shaft power take-off according to DE 103 55 667 A1 or DE 102 56 480 A1 can be connected to the door shaft.

As can be seen from EP 1 426 538 A2, the known shaft gate drive serves to drive a gate leaf that can be raised in the course of its opening movement. When the gate is engaged and the drive is stationary, the gate is locked by the self-locking gear and prevents unauthorized opening of the gate secured outside. Thus, the gate can not move even in emergencies such as power outages.

In DE 103 55 667 A1 and DE 102 56 480 A1, an emergency unlocking device is therefore proposed, by means of which the output shaft of the transmission can be uncoupled from the self-locking part of the transmission. In order to avoid that in an unintentional operation of the emergency unlocking device with raised gate a consequent crashes of the gate leads to injury to persons located in the door paths or damage located in the door path objects, have from DE 103 55 667 A1 and DE 102 56 480 A1 known emergency unlocking devices on a safety device, which secures an actuating element - in particular a handle - the emergency unlocking device against unintentional operation.

The handle engages via a Bowden cable to an actuating element of the clutch in the form of a shift lever or clutch lever.

Such emergency release device is operated only in emergencies and thus very rarely. It may be that the operation takes years. Due to the long standstill, it can happen that the entire emergency release device is quite stiff. On the other hand, the size of a handle for the emergency release device limits, since you want to accommodate the handle in external operation according to DE 103 55 667 A1 in a housing, which is already for optical reasons, the need to keep this case as compact as possible. Also, for the internal operation according to DE 102 46 480 A1, because of often cramped space conditions, there is a need to make the handle for actuating the emergency unlocking device particularly compact. It is therefore desirable to make the handle only so large that it can only be operated with one or two fingers. Based on the prior art according to DE 103 55 667 A1 and DE 102 56 480 A1, the invention has for its object to improve a building closure drive referred to in the preamble of claim 1 type such that the emergency unlocking device with a compact actuator even after a long time Disposal is easy to operate.

This object is achieved by a building closure drive with the features of the attached claim 1.

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

According to the invention, a building closure drive, in particular a door drive and more particularly a shaft drive are provided. The Gebäudeabschlussantrieb has a motor which is fixed in a fixed space in a room, which is completed by the driven by the drive building completion. For example, the engine is attached to a wall next to a door opening, which is closed by a gate.

The building closure drive further has a self-locking gear for transmitting the driving force of the motor to an output element of the building closure drive, wherein the output element is connected to the building closure wing geared. Due to the self-locking gear - for example, worm gear - the movement of the building closure wing coupled to the output element is blocked when the engine is stationary. In order to be able to move the Gebäudeabschlußflügel by hand in emergencies, such as power outages, an emergency unlocking device is provided, by means of which the output element is separable from the transmission. This can be decoupled in case of power outages of the building closure wing of the escapement of the transmission and so be moved by hand. The building closure drive is located usually at the top of a building closure wing and thus far away from the area, which is easily accessible by an operator. Therefore, the emergency unlocking device has at least one easily accessible actuating device by means of which an operator can manually actuate the emergency unlocking device. The emergency unlocking device further comprises a clutch device for separating transmission and output element. This coupling device has a movable actuating element, in the movement of which the separation is triggered. Next, the emergency unlocking device has a traction means, which connects the least one actuator with the actuating element. By choosing a flexible traction means one can choose the location of the actuator to some extent freely, without having problems in the connection of actuator and actuator.

Preferably, the traction means is formed by a cable element of a Bowden cable, which is guided between the actuating device and the actuating element. The outer shell of the Bowden cable is on the one hand attached to a holder of the actuating device and on the other hand fixed in the region of the coupling device. If, for example, one pulls on a handle of the actuating device, the cable element located in the sleeve can be tightened, thus moving the actuating element. By the choice of the Bowden cable - a - intended or unintentional - manipulation of the traction device in the area between the building closure drive and the actuator is avoided.

However, the train on the rope of a Bowden cable against the train of a free-guided rope is difficult because of the friction between the rope and shell. In addition, the moving parts of the rarely used emergency unlocking device can become stuck with time.

Nevertheless, in order to be able to operate the actuating element easily in an emergency that occurs once, a kind of pulley is designed according to the invention which can at least halve the operating force of the actuating element.

The formation of such a pulley is possible in preferred embodiments of the invention essentially by two alternative measures.

In an alternative a), the end of the traction means assigned to the coupling device, that is to say preferably the end of a Bowden cable, is fixed in the region of the coupling device. On the actuating element of the coupling device then a deflection for the traction means is present, via which the traction means is guided forming a loop. From the deflection of the traction means is then - preferably as there beginning Bowden cable - led to the actuator.

In an alternative b) the coupling device associated with the end of the traction device as previously known from DE 102 56 480 A1 and DE 103 55 667 A1 in principle - attached to the actuator. From this attachment, however, the traction means is then initially guided in such a way at a stationary deflection, so that a Zugmittelschleife is formed with two Trumen, and only then led to the at least one actuator.

The traction means can - in both alternatives - be deflected several times, resulting in a corresponding further reduction of the actuating forces.

Preferably, a deflection roller is provided on the or each deflection for the traction means, which further reduces the actuating forces.

If one provides the actuating element, the deflection and the traction means on the outside, for example on the outside of a housing unit of the building closure drive, then you can easily mount the traction means, check and replace as needed. The actuating element is preferably designed as a clutch shift lever. The leverage effect further reduces the force that the operator must expend to release the clutch device. The longer the lever arm, the lower the force. On the other hand, the building closure drive often has to be arranged in tight spatial conditions. Projecting elements, such as a very long shift lever, would limit the possible applications in very tight structural conditions. In order to obtain a long lever without the shift lever protruding outward, it is preferred that the shift lever at a lateral end portion of the building closure drive - in particular a lateral end portion of a housing unit of the

Gebäudeabschlussantriebes - is hinged pivotally. From this linkage, the shift lever then extends across the building closure drive on the opposite lateral end region, where the Zugmittelschleife engages the free end of the shift lever.

Preferably, the shift lever is arranged on the housing unit and the housing unit is contoured such that the shift lever does not protrude during its entire possible sequence of movement over a building block drive closely inscribing imaginary cuboid. In other words, the shift lever is arranged such that on all six sides of the building closure drive towards a stationary part of the building closure drive projects further than the shift lever. This can be accomplished, for example, that a housing unit of the Gebäudeabschlussantriebes is composed of a motor housing and a transmission housing, wherein the transmission housing has at least one side larger dimensions than the motor housing and wherein on the engine side of the transmission housing, where the motor housing attacks , the shift lever is seated, but so that it extends beyond the gear housing only to the engine side, but not to the other sides. The leadership of the traction means is preferably designed as the shift lever such that it does not protrude beyond the outer contour of the building closure drive.

The shift lever has at its free end preferably a deflection roller for deflecting the traction means. By engaging the Zugmittelschleife at the very end of the shift lever arranged pulley, the operating force can be minimized on the actuator. In order to further operate the emergency unlocking both from the interior of the space to be closed and the exterior of the space to be closed, at least two actuators are provided in a further preferred embodiment of the invention, in particular an inner emergency unlocking actuator and an external emergency unlocking actuator. In this case, it is further preferred that the traction means between the last deflection in the region of the coupling device and the actuating unit is simply or multiply branched, wherein in each case a branch is guided to the respective actuating device.

Preferably, in the vicinity of the building closure drive, in particular on a housing unit thereof, at least one passage for several or all of the branches of the traction means is provided, wherein the branch point is provided between the passage and the last deflection point. In the normal position, in which the clutch is engaged, the branching point is so far away from the passage that the path is sufficient to pass through at any of the branches for disconnecting the clutch.

On the at least one bushing, in a preferred embodiment, a Bowden cable is then used for each actuating device. The Bowden cable sheaths of the corresponding Bowden cables are then attached to the at least one passage, the cable elements of the Bowden cables extending from the implementation to the branch point and there preferably to a single traction means, which forms the pulley, are connected. The Use only one Zugmittelstranges for the formation of the pulley has the advantage of a simpler structure and material savings.

Preferably, a wire rope for forming the pulley is present, whose free end terminates with an eyelet on which the two loops of the ends of the Bowden cables are screwed by means of a screw or the like.

As is basically known from DE 10 256 480 A1 and DE 103 55 667 A1, the at least one actuating device can also have a securing device which prevents unintentional actuation. The securing device is preferably releasable only by using a tool or by breaking a seal or by destroying a securing element.

The operator then knows that she is doing something that is actually forbidden. Through appropriate warnings, it can be pointed out that a crash of a raised building closure wing may result.

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

Fig. 1 is a schematic perspective view of a

Gebäudeabschlussantriebes in the form of a Wellentorantriebes with an emergency release device;

Fig. 2 is an enlarged detail view of Fig. 1 for illustrating a

Attachment of a traction means to an actuating element of a coupling device in an operating state in which the emergency unlocking device is not actuated;

FIG. 3 shows the detail of FIG. 2 when the emergency unlocking device is actuated; FIG. and Fig. 4 is a highly simplified representation of an alternative type of

Connection of the traction means to an actuating element of the coupling device of the emergency unlocking device on the motor side of a transmission housing of another embodiment of the Wellentorantriebes out seen.

In Fig. 1, a building completion in the form of a Wellentorantriebes 2 with an emergency release device 4 is shown. The shaft gate operator 2 has an electric motor 6 housed in a motor housing 7 and a gear 9 housed in a gear housing 8.

The motor housing 7 and the gear housing 8 form a unit.

The transmission 9 includes a self-locking worm gear (not shown) and directs the rotational force of the motor 6 to an output shaft 10. As more fully described and shown in EP 1 426 538 A2, the output shaft 10 is attached to one of a gate; a part of the door and not the drive 2 forming Torsionsfederwelle connectable, which is coupled in terms of gearing with an at least partially vertically moving (sectional) door leaf. For further details on the torsion spring shaft, the door leaf and the coupling of the output shaft 10 to the torsion spring shaft is made expressly to EP 1 426 538 A2, which forms part of the present disclosure.

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 an actuating element, here in the form of a shift lever or lever 12. About the actuator, the coupling device 11 can be solved such that the output shaft 10 is decoupled from the worm gear. In the position of the lever 12 shown in FIG. 1 and FIG. 2, the coupling device 11 is in a normal operating position, in which the output shaft 10 and the gear 9 and Thus, the motor 6 are coupled together. By the movement of the lever 12 in the illustration of FIG. 1 down the lever 12 enters the position shown in FIG. 3, in which the coupling device 11 is disengaged and the output shaft 10 of the formed by the gear 9 and the motor 6 Engine assembly unit is decoupled.

The emergency unlocking device 4 comprises, in addition to this coupling device 11 with the lever 12, a first mechanical actuating device 14 with an associated first connecting and transmitting device 16 and a second mechanical actuating device 15 with an associated second connecting and transmitting device 17. The first actuating device 14 is for a Operation provided from the inside of the space to be closed by the gate to be driven. The second actuating device 15 is designed for actuating the emergency unlocking device 4 from outside the space to be closed. By connecting and transmitting device 16, 17, the respective actuators 14, 15 can be arranged in each convenient accessible places and connect to the lever 12 and thus the coupling device 11.

For the detailed structure and the details of the first actuator 14, reference is expressly made to the exact representation and description in DE 102 56 480 A1. For the reasons explained in detail there, the first and the second actuating device 14, 15 each have a securing device 24 which secures the emergency unlocking device 4 against unintentional or unauthorized actuation. The securing device 24 of the first actuating device 14 has in particular a locking screw 58, by means of which a first pull handle 22 can be fixed. If the operating unit wants to pull the first pull handle 22 of the first actuating device, it must first loosen the screw 58 by means of a wrench (not shown). The detailed structure of the second actuator 15 is described in DE 103 55 667 A1, to which reference is expressly made for further details. Here, too, secures a securing device 24, here in the form of a lockable by means of a lock 108 housing 100 against unintentional or unauthorized operation. In the lockable housing 100 is a second pull handle 22a for manual operation of the emergency release device 4 from the outside.

Both actuators 14, 15 are connected to respective associated Bowden cables 25, 26 with the lever 12. The Bowden cables 25, 26 each have a wire rope 32, 33 and a sheath 34, 35. The enclosure 34 of the first actuator 14 is attached to a stationary mount 20. The drive-side end of the sheath 34 of the first Bowden cable 25 is attached to a bushing 202 which is formed on a Z-shaped angle plate - in the following Z-angle 200 - is formed. The Z-angle 200 is secured to the transmission housing 8 by means of a countersunk screw 204.

In addition to an opening for the first wire rope 32 of the first Bowden cable 25, the bushing 202 also has a second opening for the second wire rope 33 of the second Bowden cable 26. The drive-side end of the casing 35 of the second Bowden cable 26 is adjacent to the bushing in the region of this second opening 202 attached to the drive end of the first enclosure 34. The second Bowden cable 26 is then guided from the bushing 202 to the housing 100. Within this housing 100 is the second pull handle 22a of the second actuator 15. This second pull handle 22a is attached to the wire rope 33 of the second Bowden cable 26.

As can best be seen from FIG. 2, the two wire cables 32, 33 are guided over the bushing 202 and connected to one another at a branching point 206. To form the branching point 206, the two drive-side end of the wire ropes 32, 33 each have lug elements 30, 31 which are screwed together and with a third lug element 210 by means of a screw-nut combination 208. The third loop element 210 connects a free end of a third wire rope 212 to the drive-side ends of the two wire cables 32, 33.

The third wire rope 212 is deflected via a deflection point 214 at the free end 216 of the lever 12 to a loop 232. The remaining end 218 of the third wire rope 212 is fixedly secured in the region of the attachment of the Z-angle 200 to the transmission housing 8 and thus fixed in place. The lever 12 is mounted with its other end 220 seated on a pivot shaft 222 pivotally mounted to the transmission housing 8. About the pivot shaft 222, the pivotal movement of the lever 12 (not shown) internal elements of the coupling device 11 for the purpose of dissolving gear 9 and output shaft 10 is transmitted. The lever 12 is located on that side 226 of the transmission housing 8, from which also the motor housing 7 protrudes. The pivot shaft 222 is located on a first lateral end portion 224 of this side 226 of the transmission case 8, which is referred to as the motor side 226 hereinafter. The lever 12 extends across the motor side 226 to the opposite second lateral end portion 228, where the free end 216 of the lever 12 is located with a guide roller 230. Since the deflection roller 230 is attached to the movable free end 216 of the lever 12, the deflection roller 230 forms a kind of loose role, which forms a kind of pulley arrangement 234 with the loop 232 of the third wire rope 212.

In Fig. 3, the situation is shown in which the emergency release device 4 is actuated by train on one of the two pull handles 22, 22a. In the example shown here, the emergency unlocking device 4 has been actuated by pulling on the pull handle 22 of the first actuating device 14 (after release of the securing device 24). In this case, the first wire rope 32 has attracted via the branch point 206, the third wire 212. Through the loop 232, the free end 216 of the lever 12 has been pulled down, so that the coupling device has been solved. The piece of the second wire rope 33 of the non-actuated second actuating device 15 located between the bushing 202 and the branching point 206 has simply bulged out.

Although an increased force has been required by the bulge, the operation can be easily done on the very compact handle with only two fingers, as the operation on the pulley assembly 234 and the leverage of the lever 12 takes place.

In Fig. 4, an alternative guidance of the third wire rope 212 is indicated.

In this case, a bracket 250 for the lever 12 associated with the end 252 of the third wire 212 is formed on the lever 12 in addition to the guide roller 230 which forms the deflection point 214. The eyelet 210 facing away from the end 252 is thus not fixedly attached to the transmission housing 8, but also at the free end 216 of the lever 12 in this arrangement. On the gear housing 8 is yet another deflection 254 formed with a stationary mounted deflection roller 256. The third wire rope 212 is thus attached to the free end 216 of the lever 12, then guided over the fixed guide roller 256 forming the loop 232 to the loose guide roller 230 at the free end 216 of the lever and deflected there again.

Beyond this then last deflection point 214 is then the loop element 210, to which the two wire cables 32, 33 can be fastened analogously as in the first embodiment.

Due to the multiple deflection, the tensile force with which the lever 12 is to be operated, further reduce. However, it is important to ensure that due to the extended by the multiple deflection Zugweges the way between the location where the branch point 206 is in the normal position until the passage 202 is dimensioned sufficiently long, so that the lever 12 can still be operated.

LIST OF REFERENCE NUMBERS

Shaft door drive Emergency release device Engine Engine housing Transmission housing Transmission Output shaft Coupling device Lever (actuating element) First actuating device (inner actuating) Second actuating device (external actuating) First connecting and transmitting device Second connecting and transmission device Holder First pull handle Second pull handle Securing device First Bowden cable Second Bowden cable First loop element Second loop element First wire rope Second wire rope first wrapping second wrapping securing screw housing the second operating device Z-angle 202 implementation

204 countersunk screw

206 branch point

208 screw-nut combination

210 third eyelet element

212 third wire rope (traction means)

214 deflection point

216 free end of the lever

218 fixed end of the third wire rope

220 other end of the lever

222 pivot shaft of the lever

224 first lateral end region

226 Motor side of the gearbox housing

228 second lateral end region

230 pulley

232 loop

234 pulley arrangement

250 Bracket for the end of the third wire rope

252 the lever 12 associated end of the third wire rope

254 further deflection point

256 fixed deflection pulley

Claims

1. Building closure drive (2) with a stationary motor (6), a self-locking gear (9) for transmitting the driving force of the motor to an output member (10) of the Gebäudeabschlussantriebes and an emergency unlocking device (4) for separating the transmission (9) of the Output element (10) in an emergency, wherein the emergency unlocking device (4) at least one Actuation device (14, 15) for manual actuation by a Operator, a coupling device (11), which is a mobile Actuator (12) and the transmission 9 during movement of the Actuator (12) of the output member (10) dissolves, and a traction means (212, 31, 32), which comprises the at least one actuating device (14, 15) with the actuating element (12) connects, characterized in that the coupling means associated with the end (218, 252) of the traction means (212, 32, 33) a) is fixed either fixedly, with the traction means (212) subsequently forming a loop (232) around a deflector (214) arranged on the actuating element (12) and subsequently to the at least one actuating device (14, 15) is guided, or b) is attached to the actuating element (12), wherein then the traction means (212) forms a loop (232) around a fixed deflection (254) around and then to the at least one actuating device (14, 15) is guided, so that the actuating element (12) in train on the traction means (212, 32, 33) in the manner of a pulley (234) is drivable. 2. Building closure drive according to claim 1, characterized in that the deflection (214, 254) has a rotatably mounted deflection roller (230, 256) for the traction means (212). 3. Gebäudeabschlussantrieb according to any one of the preceding claims, characterized in that the actuating element (12), the deflection (214, 254) and the traction means (212) on the outside of a housing unit (7/8) of the building closure drive (2) are mounted. 4. Gebäudeabschlussantrieb according to any one of the preceding claims, characterized in that the actuating element by a lever (12) is formed. 5. Gebäudeabschlussantrieb according to claim 4, characterized in that the lever (12) is pivotally hinged to a lateral end portion (224) of the Gebäudeabschlussantriebes (2), transverse to the Gebäudeabschlussantrieb (2) to its opposite lateral end portion (228) and is connected at its end arranged there with the loop (230) of the traction means (212). 6. Gebäudeabschlussantrieb according to claim 5, characterized in that the lever (12) during its entire movement range neither upwards nor down nor to one of the four sides over an outer housing unit (7/8) of the building closure drive (2) also protrudes , 7. Gebäudeabschlussantrieb according to one of claims 4 to 6 and characterized according to claim 2, characterized in that the deflection roller (230) is arranged at a free end (216) of the lever (12). 8. Gebäudeabschlussantrieb according to any one of the preceding claims, characterized in that at least two actuating means are provided, wherein the traction means between the deflection (214, 254) and the actuating means (14, 15) is branched, wherein a first branch (32) of the traction means is guided to a first actuating device (14) and a second branch (33) of the traction means is guided to a second actuating device (15). 9. Gebäudeabschlussantrieb according to claim 8, characterized in that all or more of the branches (32, 33) of the traction means by at least one passage (202) are guided, which is fixed to a housing unit (7/8) of the building closure drive (2) in that a branching point (206) where the branches (32, 33) are united into a single traction means (212), in a normal operating position, in which the emergency unlocking device (4) is not actuated, such a distance from the Carrying out (202) has the fact that the path of the branching point to the passage in train at one of the two branches (32, 33) is sufficient for separating the coupling device (11). 10. Gebäudeabschlussantrieb according to claim 9, characterized in that one or both of the branches by the cable (32, 33) of a respective Bowden cable (25, 26) are formed, the envelope (34, 35) on the bushing (202) is attached , 11. Gebäudeabschlussantrieb according to any one of the preceding claims, characterized in that the emergency unlocking device (4) with a safety device (24) against unintentional actuation of the actuating device (14, 15) is secured.