DE4437250A1 - Device for executing the closing and opening process of a tilt window - Google Patents

Abstract

The opening and closing mechanism includes gearing (13) with i>1 fitting outside on the frame (4) in the closing fitment area. A slide carriage (15) supporting the entrainment member (16) is guided displaceable in the gearing housing (14). The displacement movement of the slide carriage is convertible by associated converters into a rotary movement of the gearing drive pinion (19). A gearing output pinion (17) is connectable with a drive apart of the closing fitment. The converter is formed by a cogged gear rod (18) on the slide carriage meshing with the drive pinion (19) of the gearing.

Description

The invention relates to a device for execution the closing and opening process of a frame and Sash frame existing tilt window or a tilt door, with at least in the fold peripheral surface of the casement partially installed, by means of a on the casement assigned lock fitting actuable drive rod system Locking and unlocking the casement against the glare frame, with a drive that can be fixed to the frame, which has a positively movable actuator which with one associated with the drive rod system, from the casement protruding driver can be coupled, and the one control curve has, along which the driver can be guided by the actuator, the control curve next to at least one curve section for taking the sash with at least one corner cut for driving the drive rod system.

An establishment of the aforementioned type is according to the DE-OS 43 21 099 known.

The known device has the disadvantage that  Coupling the driver with the drive rod system Towing device is required, which with the actuator of the Drive coupled, he designed as a pin driver takes hold. The towing member comprises one on the casement arranged guide rail parallel to the one in the casement left drive rod system runs as well as one along the Slidable guide rail. The well-known one direction is provided with actuatable coupling means to couple the driver pin to the actuator or to be able to disconnect from it.

A disconnection is required, for example, if the window in question by manually operating the lock unlocked and opened.

The one for locking and unlocking a window sash opposite the frame to be brought along, the drive rod system dividing forces are not insignificant. The drive must over the driver pin consequently accordingly on the Towing element can be acted on so that the connecting rods system is moved. A corresponding dimensioning of the Components of the facility are therefore necessary. Because of relatively small, available installation space on Windows and due to a desired visual impression of the window due to larger dimensions would be significantly disturbed, the demands for ent components that are not very small, or hardly realizable. In addition, too  economic aspects regarding the marketing of the Establishment crucial because the one directions should be in addition to the corresponding optics by low Dimensions also meet the demands of inexpensive manufacturers position with the highest possible quality and Performance is sufficient.

The invention has for its object the known To improve the device so that it is as low as possible Dimensions highly efficient and yet inexpensive is to be provided.

This object is achieved by an outside attach to the sash frame in the area of the lock fitting cash transmission with a gear ratio i <1, in whose gear housing a carriage carrying the driver is guided displaceably, its displacement path over a assigned transfer means into a rotary movement of a gear Drive pinion can be implemented, with a transmission output pinion can be connected to a drive part of the lock fitting is.

The transmission provided according to the invention with an over Settlement ratio i <1 is capable of a re relatively small dimensioned drive output in he necessary for the actuation of the drive rod system to implement considerable force. It is also strong, resistant capable towing device is not required, so that the one direction overall small dimensions.  

The generation of the necessary force to operate the He can drive rod system with a small drive be enough that the path of the control curve of the drive for driving the drive rod system a predetermined length receives that compared to the direct path length of the drive rods systems between its locking and unlocking position around the Multiply the factor of the gear ratio of the transmission is fold. With appropriate design of the gearbox thus also a relatively weak and therefore advantageously low dimensioned drive are sufficient to close the drive rod system move.

The attachment of the gearbox to the casement in the area The lock fitting has the advantage that the in the casement means built in from the outset, i.e. existing means of the lock fitting that on the drive rod system act, can be used by using the output side of the transmission are coupled. A simple upgrade from Windows with the facility is possible.

The drive can also be attached to the frame with advantage an easy retrofitting of built-in Windows. Since the between the edge of the rollover of the Casement profile and the opposite reveal surface Often the area remaining on the window frame at the opening of the building is only a relatively narrow strip area, the must Drive have relatively small dimensions because it is not may be wider than that on the frame when closed  Window still existing free strip area on which he should sit. With regard to its length, however, the drive is freely designable with advantage, so that the due to the An driven downstream gearbox required longer Ver sliding paths of the actuator located in the drive without further constructively can be realized.

The drive can be in a flat, elongated rectangular be installed in the free strip area of the Frame is attached and that thus an optical Er appearance of one equipped with the facility Window hardly bothered.

In the housing of the Ge attachable to the casement drives can have the longer travel distances required can also be easily implemented in that a Guideway is provided for a sled, the one hand on the driver with the actuator of the drive ge is coupled, on the other hand via a transfer means to the integrated gear train for the translation works. The sled therefore performs exactly the same movement as the actuator, however, on a trajectory that corresponds to the trajectory of the Actuator runs parallel. The linear movement of the Carriage is converted into a by the proposed transfer agent Rotary motion that is introduced into the gear train, so that on the output side corresponding forces for the Actuation of the drive parts of the lock fitting can be tapped are used to move the drive rod system.  

The transfer agent can be, for example, on the carriage be sensitive gearing with which an assigned drive pinion of the gear combs. One can also be attached to the sled the toothed rack is attached or molded his.

The transfer device can also comprise a traction drive, the traction means is moved by the carriage. Preferably are used as traction means relatively slip-free chains or tooth strap used.

Also the gearbox housing to be attached to the frame advantageously has relatively small dimensions. It can also be designed optically, in which it is designed as a flat box, the all one components, namely the carriage, the transfer agent and the Gear train contains the actual gear.

To keep the assembly costs as low as possible hold, it is provided that the housing from half shells are composed. An inexpensive production of the half shells made of suitable plastic, for example in injection molding or Pressing is possible. Bearings for the Ge Drive pinions and guides for the sled can be done easily be molded on.

Retrofitting using already on the casement existing means of the lock fitting, which is based on the blowing rod system act with the invention direction particularly simple and unproblematic that  the drive part one through the gear housing stretching, stored therein and supporting the output pinion A shaft can be plugged onto the first free end and its second free end by a form fit intervened in an associated receptacle in the casement built lock fitting with the lock fitting rotatably is bound.

The gear housing is simple on the casement attachable, for example with appropriate screwing equipment. There the gear housing consists of half shells if necessary, a simple disassembly and subsequent possible to reassemble. After that, only one more Connection of the output pinion with the drive part of the Lock fitting, for example one in the sash square stub. The one on the Square stub shaft of a lock fitting normally Seated hand or operating handle is in front of the Installation of the gearbox housing removed and can then be if necessary, on a corresponding extension pin, the protrudes from the gearbox housing, be replaced. Constructional interventions of any kind in the frame or in the casement are not necessary, which makes it inventive device especially for retrofitting Windows and doors is suitable.

The control curve of the drive is by one corresponding course having slot in at least  formed a wall of the drive housing. Preferably point the opposite side walls of the drive housing one curve each designed as a slot, which makes the drive to the left and right of the Window center can be placed on the frame.

The section of the control curve for taking the propellant rod system extends essentially parallel to Longitudinal axis of the elongated drive housing. In the upper area of the drive housing goes to the section for taking the Espagnolette system in the section for taking the Casement over and runs approximately at right angles to it. Of the Section for taking the sash, its tilt movement to open or close the window can also run slightly curved, which when closing the Window at the start of locking a maximum tightening of the Ensure casement against the elastic window seals is accomplished.

The drive itself is reduced to a few components and therefore very compact. This is achieved in that the An drove an electric motor and a spindle driven by it comprises, for example, when the drive housing is mounted on the frame parallel to the respectively assigned immediately adjacent Ab cut of the drive rod system runs on the casement, the actuator being a lock seated on the spindle includes mother and be with one end to the lock nut fixed traction means, the other end with the driver  is connectable.

The device according to the invention is on the frame and on the casement at the height of the one on the casement Lock fitting installed. At this height is the angle between sash frame and frame with fully tilted Sash frame already relatively wide. The mounting position in the Be rich of the lock fitting has the advantage that the the weight of the sash to be moved resulting Tipping forces are relatively easy due to a drive are windable because the lever arm of the attacking moment is relatively long. However, it is disadvantageous that the Ab cut the control curve for driving the casement must also be as long as the spreading distance of the wing frame from the frame at the height of the lock fitting what disproportionate, disturbing the overall visual impression Dimensions of the drive housing would lead.

To avoid this disadvantage and still more Bridge the spreading angle of the casement with the driver to be able to in the device according to the invention as Traction means formed connection between the lock nut of the drive and the driver for the casement seen.

The traction device can be completely in the drive housing withdrawn, with the end connectable Carrier is moved to along the control curve of the drive the tilting of the casement or its ver and  To effect end locking with the frame.

So that the flexible flexible traction means too Pressure forces can be transferred to the carrier, for example when unlocking and tilting the casement provided that the drive housing one the course of the Control curve following, due to the corresponding Slit at least on one side for the engagement of the Carrier has open guide shaft, in which the Traction means is added to be longitudinally displaceable.

The guide shaft includes the normally flexible Traction means such that it is under pressure can't buckle.

So that the lock nut of the drive with the in the guide shaft and not accessible because encapsulated One of the Füh shaft walls remains connectable slotted and the lock nut has one in the guide shaft through the slotted shaft wall standing foot on which the traction device is articulated.

The driving pin on the sash frame, which on a slidably guided slide in the gear housing hold and with a free end in the control curve and thus also in the leadership congruent with the control curve shaft protrudes, can be coupled to the traction mechanism. In order to wide tilting movements of the casement are possible, the Driver pin despite the limitation due to the length of the Drive the cam sections accordingly long distances  can. This is ensured by an end of the lead tion shaft and the slot forming the control curve in an opening in the wall of the sash facing the sash Drive housing opens out.

Thus, the driver pin on the mouth Leave the control curve or back into the Control curve are introduced, because of the mouth of the Guide shaft that occurs with one end of the driver pin coupled traction device from the drive housing thus open out, or the traction means in the Drive housing retracted.

Is the sash tilted so far that with the Mit slave pin coupled end of the traction device from the drive housing has emerged, or the control curve and has left the guide shaft, there are hardly any pressure forces left to bring the flexible traction device, because then Lead-free, tread end area of the traction device tends to buckle. To buckle due to compressive forces avoid, it is advantageously provided that the traction means is only flexible link strand in one direction. So the traction means can be a roller link chain, for example, the link plates of the deflection in a predetermined Have direction locking stops.

The roller link chain is flexible in one direction in the direction they go around the transition area between the approximately perpendicular tax  curve sections or guide shaft sections is directed. Will the free leaked area of the Sagging roller link chain, this is then caused by the Function locked stops locked. The roller link chain becomes rigid so that it is able to withstand compressive forces transfer.

A structurally simple design that this own guaranteed of the roller link chain, stands out characterized in that the locking stops on a chain link each chain link formed on the end, to a chain side protruding noses that are adjacent to each other Chain links facing sides have nose flanks that run so obliquely that when the chain is straight between opposite sides of the nose There is a wedge-shaped gap at the tip of the nose is already closed when there is little sag in the chain is.

Despite its previous attacks, the Roller link chain easily into the guide shaft or expire because a chess side of the Guide shaft has a guide groove for the stops.

To the frictional forces between the walls of the guide shaft and the traction means or the To reduce roller link chain in the deflection area provided that the guide shaft in the deflection area of the chain has a slide roller mounted in the drive housing.

Embodiments of the invention, from which there are further inventive features are shown in the drawing Darge poses. Show it:

Fig. 1 is a schematic view of a device with a fitted window,

Fig. 2 is a schematic side view of the drive of the device in longitudinal section;

Fig. 3 is a partial view of the drive taken along the line III-III in Fig. 2,

Fig. 4 is a schematic longitudinal section of the leaf frame attachable gearbox housing with a modified embodiment of the conversion means,

Fig. 5 is a side view of the transmission housing in section along the line VV in Fig. 4,

Fig. 6 is a view of the section along the line VI-VI in Fig. 4,

Fig. 7 is a schematic front view of the gear-Ge häuses in longitudinal section with one embodiment of the conversion means shown in FIG. 1,

Fig. 8 is a schematic cross section of the window with frame profile and sash profile, to which the Ge gear housing according to FIG. 7 is attached at the height of the locking fitting, approximately in the plane of section line VIII-VIII in Fig. 7 ge see and

Fig. 9 is a view of the gear housing in a section along the line IX-IX in Fig. 7.

In Fig. 1, a view of a window is shown schematically. The window frame 1 is anchored in a building opening (not shown). On the frame, the movable casement 4 of the window is held by means of turn-tilt fittings 2 and 3 .

The on the circumferential fold peripheral surface of the casement 4 partially installed drive rod system 5 comprises arranged on a longitudinally displaceable steel strip 6 arranged cam 7 and corresponding locking pockets 8 , which are arranged on the fixed frame. When ge here recorded embodiment, the steel belt 6 is moved such that the locking cam 7 is disengaged from the latch pocket 8, so that the casement 4 can be tilted around the horizontal tilt axis of the central fitting. 2

On the frame 4 , a drive 9 is fixed, in the housing 10, an actuator 11 is guided movable up and down. For this purpose, a motor, not shown, acts on a spindle 12 indicated here, on which the actuator 11 sits like a lock nut.

On the sash 4 in the region of the locking fitting not shown here for actuating the drive rod system 5, a gear 13 is attached, in the gear housing Ge 14 a carriage 15 is guided up and down movable.

The carriage carries a driver 16 in the form of a pin 17 . The pin is held in a longitudinally displaceable manner in a bore in the slide and engages with a free end in a receptacle provided for the actuator 11 of the drive 9 .

If the actuator 11 moves up and down in the housing 10 , the slide 15 is carried along by the driver 16 designed as a pin 17 .

The linear movements of the carriage 15 are converted into a rotary movement of an output pinion 17 of the transmission 13 by means of a conversion means. The output pinion 17 acts via a drive part of the closing fitting, not shown here, directly on the drive rod system 5 and pushes its steel band 6 to act on the locking or unlocking of the casement 4 with respect to the frame.

In the embodiment shown here, the setting means comprises a rack 18 arranged on the slide 15 , the teeth of which mesh with the drive pinion 19 of the transmission 13 .

Fig. 2 shows a schematic side view of the drive 9 in longitudinal section. The lower region of the housing of the drive 9 contains a motor 21 driving a worm shaft 20 . A shaft 23 , which carries the worm wheel 24 which is in engagement with the worm shaft 20 , and a pinion 25 are mounted in a bearing block 22 . The worm wheel 24 and pinion 25 are connected to the shaft 23 in a rotationally fixed manner.

A double pinion 27 is mounted on an axle 26 anchored in the housing 10 and meshes on the one hand with the pinion 25 and on the other hand with a further pinion 28 . The pinion 28 is non-rotatably connected to a spindle 12 mounted in the housing 10 . On the spindle 12 is a lock nut 110 , which is part of the actuator 11 ( Fig. 1).

The actuator in this embodiment also includes a steered on a foot 29 of the lock nut 110 traction means 30 , which is formed here as a roller link chain 31 . At the free end of the traction means 30 is a Ver connecting element for connection with the pin 17 shown here as a blackened point of the driver 16 ( Fig. 1) see easily. For example, the last end link 32 of the roller link chain 31 can carry a bushing 132 ( FIG. 3) into which the free end of the pin 17 (driver 16 ) can be inserted. It can also be pulled out, as a result of which the drive 9 and the gear 13 can be decoupled from one another, for example in order to manually open the window. For this purpose, a wheel-like handle 33 is provided at the opposite end of the pin 17 of the driver 16 .

In the housing 10 there is a control curve, under which a guide shaft 34 runs, which, like the control curve, has a vertical first shaft section, which runs parallel to the spindle 12 , and an upper, approximately perpendicular second shaft section.

A shaft wall of the guide shaft is slotted so that the foot 29 of the lock nut can project into the guide slot 34 towards the 110th

Moves the spindle 12 down the lock nut 110 from the position shown here, the roller link chain 31 is pulled into the guide shaft 34 , wherein it runs in the order steering region over a slide roller 35 mounted there in the housing 10 .

The roller link chain 31 pulls on the pin 17 of the participant 16 , which protrudes from an elongated hole guide 36 in the housing 14 of the transmission 13 and thereby moves the sash frame 4 indicated here in a tilting movement closing the window to the right. As soon as the roller link chain 31 is pulled in so far that its end member 32 happens to the carrier pin 17 the deflection region with the sliding roller 35, the locking operation is initiated, since the pin 17 now moves along the cam portion or the so congruent guide shaft portion which extends parallel to Spindle 12 or to the drive rod system 5 of the casement 4 runs.

The locking process of the casement with respect to the frame is complete when the pin 17 has reached the position at the lower end of the slot guide 36 in the housing 14 of the gear 13 Ge. In this locking position, the end member 32 is together with the pin in the position marked with A be in the guide shaft, the lock nut 110 is in the lower position indicated by dashed lines.

By reversing the direction of rotation of the motor 21 , the ge open opening process is initiated, through which the sash frame 4 is first unlocked by moving the drive rod system 5 relative to the frame and then the unlocked sash frame 4 is moved to the tilt position, as shown in Fig. 2 is.

A compressive force is exerted on the roller link chain 31 . This is easily possible during the displacement of the chain within the guide shaft 34 for the purpose of unlocking. As soon as the chain out of the housing 10 , or respectively out of the guide shaft 34 of the drive 9 , to cause the tilting movement of the casement 4 , the chain becomes flexible, that is, it could only transmit train forces, because when it is subjected to pressure forces out. The roller link chain 31 used here, however, is equipped with link plates, which have the stops 37 by bending stops.

The stops 37 are formed on one end of a chain link of each chain link, towards one side of the chain in front of jumping lugs 38 which, on the adjacent chain links facing sides, have nose flanks which run so obliquely that, when the chain is stretched, are opposed to each other There is a wedge-shaped gap 39 widening towards the tip of the noses, which is, however, closed again with little sag of the chain.

The chain is already due to sag of its own weight on one side rigid, so that with the Chain pressure forces are also transferable.

When the chain runs into the guide shaft, the stops 37 thread into a guide groove 40 of the guide shaft 34 .

In Fig. 3 the upper portion of the housing 10 of the drive 9 is shown in a section along the line III-III in Fig. 2. The same components are identified with the same reference numbers.

Fig. 3 illustrates that the housing 10 of the drive from two half-shells 10 'and 10 ''is composed. Each half-shell laterally has the control curve visible here as an opening, so that the drive 9 can be used on both sides. The curve section for driving the sash is designated 41 or 41 '. The curve section for driving the drive rod system has the reference number 42 or 42 '. Between the curve sections 41 and 41 ', or 42 and 42 ' runs inside the housing 10 of the guide shaft 34 for the traction means, which is part of the actuator 11 moved by the drive, with which the pin 17 of the driver 16 ( Fig. 1) can be coupled by being inserted into the socket 132 of the end link 32 of the roller link chain 31 .

In Fig. 4 is an embodiment of the sash frame attachable gear in a sectional side view Darge provides, in which the transfer means is formed as a traction drive.

In the housing 14 of the gear 13 , the carriage 15 carrying the driver can be displaced along an integrally formed guideway 43 . The elongated hole guide located in the housing 14 , through which the driver protrudes into the control cam of the drive 9 is again designated by 36 ( FIG. 2).

A toothed belt 46 is placed around deflection wheels 44 and 45 mounted in the housing 14 , the ends 47 and 48 of which are each attached to the slide. When the driver 16 causes the actuator 16 to move, the carriage 15 is moved along its guide path 43 , the deflection wheel 44 being set in a rotary movement by the toothed belt. The deflecting wheel 44 also acts as a drive pinion by rotating a drive shaft 49 mounted in the housing 14 , on which a smaller pinion 50 sits in a rotationally fixed manner. This in turn meshes with a larger output pinion 51 , which is connected in a rotationally fixed manner to a shaft 52 . Shaft 52 and output pinion 51 form a drive part of the closing mechanism.

Fig. 5 shows a view of the transmission in a section along the line VV in Fig. 4. The same components are designated by the same reference numerals. Fig. 5 shows the toothing of the gearbox and the transfer means and in particular the special design of the drive part for the closing impact of the casement of the window as the housing 14 extending through the Ge, stored therein and the output pinion 51 supporting shaft 52 , on the first free End 53 a handle is pluggable and the second free end 55 is provided with a square, hexagon or similar form-locking element, via which the shaft 52 can be inserted in a rotationally fixed manner in an associated receptacle of the closing fitting installed in the casement 4 .

FIG. 6 is a view of a section along the line VI-VI in FIG. 4 and illustrates the compact construction of the housing 14 of the transmission and the guideway 43 for the slide 15 . The housing 14 has on one side a removable cover 56 , under which a clamping screw 57 is seated, with which the driver 16 can be fixed in a bore of the carriage 15 . After removing the closure cover 56 , the clamping screw 57 is accessible.

Fig. 7 shows an embodiment for the transfer means of the transmission 13 , as already mentioned in the above description of FIG. 1. The output pinion of the Ge gear is here, as in Fig. 1, 17 . It meshes with a smaller pinion 56 which, together with the drive pinion designated as 19 in FIG. 1, sits in a rotationally fixed manner on a shaft 48 mounted in the housing 14 . The drive pinion 19 meshes with the rack 18 located on the slide 15 .

Fig. 8 shows a view of the gearbox according to a section VIII-VIII in Fig. 7, wherein in addition, the cross sections of the casement 4 and the frame 1 are drawn.

In accordance with a Fig. 5 corresponding education, the drive member is a extending through the gear housing 14 , mounted therein and the output pinion-supporting shaft 52 , which is inserted with one end 55 in an associated receptacle 59 of the lock fitting 4 installed in the sash frame is. The receptacle 59 is, for example, a spiked wheel, the spikes of which engage in matching perforations in the steel strip 6 of the drive rod system 5 ( FIG. 1) in order to move this transversely to the plane of the drawing when the window is to be locked or unlocked.

FIG. 9 shows a view of the transmission 13 in a section along the line IX-IX in FIG. 7. The same components are identified by the same reference numbers.

Claims (16)

1. Device for executing the closing and opening process of a tilting window or a tilting door consisting of a frame and sash frame, with an at least partially installed in the rebate peripheral surface of the sash frame, actuatable drive rod system for relationally or unlocking by means of a locking fitting arranged on the sash frame of the casement frame with respect to the frame, with a fixedly attachable frame to the drive, which has a positively movable actuator which can be coupled to a drive rod system associated with the wing frame projecting driver, and which has a control curve along which the driver can be guided by the actuator The control curve has at least one curve section for driving the sash frame in addition to at least one curve section for driving the sash frame, characterized by an outside of the sash frame ( 4 ) in the area of the lock ßbe impact attachable gear ( 13 ) with i <1, in the gear housing ( 14 ) of which a carrier ( 16 ) carrying slide ( 15 ) is displaceably guided, the displacement movement of which via an assigned transfer means into a rotary movement of the gear drive pinion ( 19 ) can be implemented, a gear output pinion ( 17 , 51 ) being connectable to a drive part of the locking fitting. 2. Device according to claim 1, characterized in that the transfer means is on the carriage ( 15 ) arranged Ver teeth with which a drive pinion ( 19 ) of the gear ( 13 ) meshes. 3. Device according to claim 2, characterized in that the toothing is a rack ( 18 ). 4. Device according to claim 1, characterized in that the transfer means is a traction drive. 5. Device according to one of claims 1 to 4, characterized in that the housing ( 10 , 14 ) are composed of half-shells. 6. Device according to one of claims 1 to 5, characterized in that the drive part is a through the Ge gear housing ( 14 ) extending, mounted therein and from the drive pinion ( 17 , 51 ) supporting shaft ( 52 ), on the first free end ( 53 ) a handle ( 54 ) can be plugged in and the second free end ( 55 ) of which is non-rotatably connected to the locking fitting by positive engagement in an associated receptacle of the locking fitting installed in the casement ( 4 ). 7. Device according to one of the preceding claims, characterized in that the control cam ( 41 , 42 ; 41 ', 42 ') through a corresponding course slot in at least one wall of a drive frame ( 1 ) attachable drive housing ( 10 ) is formed. 8. Device according to claim 7, with a drive ( 9 ) which comprises an electric motor ( 21 ) and a spindle driven therefrom ( 12 ) which, when mounted on the frame ( 1 ), the drive housing ( 10 ) approximately parallel to the respectively assigned immediately adjacent section of the drive rod system ( 5 ) runs on the casement ( 4 ), characterized in that the actuator ( 11 ) comprises a lock nut ( 110 ) seated on the spindle ( 12 ) and a traction means ( 30 ) fastened at one end to the lock nut ( 110 ) , the other end of which can be connected to the driver ( 16 ). 9. Device according to claim 8, characterized in that the drive housing ( 10 ) has a following the course of the control curve, due to the corresponding slot at least on one side for the engagement of the driver ( 16 ) open guide shaft ( 34 ), in which the traction means ( 30 ) is accommodated in a longitudinally displaceable manner. 10. The device according to claim 9, characterized in that a shaft wall of the guide shaft ( 34 ) is slotted and that the lock nut ( 110 ) in the guide shaft ( 34 ) through the slotted shaft wall protruding foot ( 29 ) on which the traction means ( 30 ) is articulated. 11. Device according to one of claims 9 and 10, characterized in that one end of the guide shaft ( 34 ) and the slot forming the control cam opens into an opening in the wing frame ( 4 ) facing wall of the drive housing. 12. Device according to one of the preceding claims, characterized in that the traction means ( 30 ) is a limb strand which is only flexible in one direction. 13. The device according to claim 12, characterized in that the traction means ( 30 ) is a roller link chain ( 31 ) whose link plates have the deflection in a predetermined direction blocking stops ( 37 ). 14. The device according to claim 13, characterized in that the locking stops ( 37 ) on a chain link of each chain link are molded on the end, projecting towards a chain side lugs ( 38 ) which have sides facing nose on the respectively adjacent chain links, which are so inclined run that with a straight, stretched chain ( 31 ) between opposing flanks of the nose there is a wedge-shaped gap ( 39 ) which widens towards the tip of the noses and which is closed again with little deflection of the chain ( 31 ). 15. Device according to one of the preceding claims, characterized in that a shaft side of the guide shaft ( 34 ) has a guide groove ( 40 ) for the stops ( 37 ). 16. Device according to one of the preceding claims, characterized in that the guide shaft ( 34 ) in the deflection region of the chain ( 31 ) has a slide roller ( 35 ) mounted in the drive housing ( 10 ).