EP0397179B1 - Window system for a building - Google Patents

Abstract

The window system has microprocessors (43) coupling the pivoted windows (41) to a central monitoring point (49) which incorporates an optical display for the closed and locked positions of each window (41). The microprocessors (43) lie adjacent the respective windows (41), each incorporating a receiver for remote control signals supplied by the central monitoring point (49), with auxiliary control of each window via a portable remote control transmitter (63) and via stationary control devices (67) receiving room parameter sensor signals. Pref. the sensors (69) detect the relative humidity, the temp. and/or the CO2 content of the room air.

Description

The invention relates to a window system for a building.

Monitoring the closed state of the windows of a building is usually time consuming, especially for buildings with a large number of windows, such as office buildings and the like. Even if the closed state of the windows can be seen from outside the building, which is usually not possible with only ajar and unlocked windows, with conventional window systems each window must be closed and locked individually and by hand.

From DE-A-32 23 808 a window with a manually operated turn-tilt locking fitting is known, the drive rod arrangement of which opens a gap in the position releasing the window for a tilting movement about a horizontal axis by means of an electric motor integrated into the window handle for ventilation purposes can be. The electric motor drives independently from the handle blocked by a torque arm on the drive rod assembly. The drive rod arrangement movable in the usual direction in the circumferential direction of the casement of the window locks the window on its window frame on the one hand and tilts the casement into the slightly open ventilation position via a wedge gear acting between the window frame and the drive rod arrangement. The electric motor is assigned a controller which responds to a room air parameter, for example to gaseous or visible impurities in the room air, and which opens the window automatically when the monitored parameter exceeds a predetermined value or closes again when the value falls below it. In this way, the energy requirement for heating or cooling the room air can be kept to a minimum.

DE-A-33 36 645 discloses a device for automatic door monitoring of a vehicle, in particular an omnibus used in local passenger transport, in which several monitoring devices assigned to the individual doors are controlled by a common control device. The control device and the monitoring devices each contain a microprocessor. The control device and the monitoring devices respond to a large number of sensors which monitor the driving state of the vehicle, for example its driving speed or the activation of its brakes, or else check whether the door space is free of people. In order to increase operational safety, the control unit logically links a large number of sensor signals. Since the control unit is constructed using a microprocessor, the logic operations can be changed in a simple manner.

It is an object of the invention to provide a window system with increased ease of use and / or monitoring, the installation effort for installing the window system should be low.

This object is achieved by the features specified in claim 1. The invention is particularly suitable for windows, the casement of which is provided with a manually operated tilt and turn locking fitting, which can be released alternately for a pivoting movement about a vertical axis or a tilting pivoting movement about a horizontal axis. The locking fitting is locked or unlocked by a motor arrangement regardless of the possibility of operating it manually. The motor arrangement also provides for an opening and closing movement of the casement, preferably for the tilting movement about the horizontal axis.

The motor arrangements are controlled by microprocessors, which detect the locking state of the locking fitting and / or the closing state of the casement via sensor arrangements. Each of the windows is assigned its own microprocessor, which, however, can alternatively take over the control of the motor arrangements and the detection of the signals from the sensor arrangements in each case in a group of windows.

The manually operated locking fitting of the windows, which is preferably designed as a tilt-and-turn locking fitting, has an espagnolette arrangement movable in the circumferential direction of the sash frame, which is concealed at least partially in a rebate circumferential surface of the sash frame of the window. The monitoring center shows signals from position sensor arrangements in the optical display device of the window or of groups of windows, which respond to the current position of a drive rod arrangement of the locking fitting of the windows. The position sensor arrangements are formed in two parts and comprise a first sensor part, which is in a fixed drive connection with the drive rod arrangement, and a second sensor part, which is firmly connected to the casement or the window frame. This has the advantage that a comparatively large installation space is available along the drive rod arrangement and the comparatively large stroke of the drive rod arrangement can also be used for the reliable triggering of comparatively insensitive sensors.

The central monitoring device comprises an optical display device for displaying the closed state of individual windows or groups of windows. The optical display device can be light-emitting diodes assigned to the individual windows or individual groups of windows, which signal the pivoting state of the window by their signal state. For example, light-emitting diodes of different colors can be provided, for example red for open windows and green for closed windows. In particular in embodiments in which the monitoring center is likewise designed as a computer, for example as a personal computer, the optical display device can be designed as a text display which indicates the location and closed state of the window in alphanumeric characters. Also suitable are display devices with a graphic display, for example in the form of a screen, which is based on a graphic representation of a building floor plan displays the window status.

The monitoring center must be able to distinguish between a large number of windows. This can be done, for example, in that the individual controls of the windows or window groups, which are preferably designed as microprocessors, are cyclically queried in a time-division multiplex process for the state of the window by calling up the windows or their microprocessors. Alternatively, the microprocessors can also be assigned code addresses which, together with their signals indicating the window state, they are preferably sent cyclically to the monitoring device.

In a structurally particularly simple variant of a position sensor arrangement, the first sensor part is designed as a magnet fastened to the drive rod arrangement and displaceable together with it in the circumferential direction of the casement, while the second sensor part is a magnetic field sensor, in particular a Hall switch. The magnet can be held on an already existing locking pin projecting from the drive rod towards the frame, while the magnetic field sensor is arranged in a locking plate of the frame associated with the locking pin. This configuration has the advantage that it only responds when the window is closed and locked, and that it can be produced with comparatively little design effort. The magnet is in particular provided concealed on the locking pin, so that even when the window is open it cannot be seen that it is part of a position sensor arrangement.

A variant in which several position sensor arrangements are provided offers increased manipulation security are, of which a first position sensor arrangement responds to the closed position of the sash, a second to the locking position of the drive rod and a third to the unlocking position of the drive rod which enables a pivoting movement of the sash. A magnet arranged jointly on the drive rod can be assigned to the second and the third position sensor arrangement, the magnetic field sensors being concealed and thus not recognizable being arranged inside the casement frame even when the window is open. In both of the above-described variants of the position sensor arrangements, the magnets and the magnetic field sensors are expediently arranged in the region of the drive rod corner deflection diagonally opposite the corner bearing of the turn-tilt locking fitting. The drive rod corner deflection can be provided as a standard component regardless of the size of the window and is moved out of the frame both during the tilting movement and during the rotating movement of the window, so that the position sensor arrangements respond equally to both types of pivoting movement.

In a further variant of a position sensor arrangement, this is designed as a tappet contact arrangement, the tappet contact part of which is controlled by the drive rod arrangement via an inclined surface gear. The plunger contact part exits through an opening of a cover rail covering the drive rod of the locking fitting of the window in its locking position and is retracted behind the cover rail into the casement frame when the window is unlocked and released for the pivoting movement. The drive rod is designed so that it only opens the opening of the faceplate in the locked position, but conceals it in the unlocked position. With the window open the plunger contact part is thus covered, which increases the security against manipulation of the position sensor arrangement.

In a preferred embodiment, the tappet contact part is a lever part which is articulated on the faceplate and provided with a cam surface and which cooperates with a cam part which is firmly connected to the drive rod. The lever part is expediently designed as a two-armed lever, the lever arms of which form cam surface areas inclined at an obtuse angle to one another, so that the cam part controls both directions of movement of the lever part.

In variants in which the drive rod arrangement can be controlled not only manually but also via a motor arrangement, limit switches provided on the motor arrangement can also be used as position sensors.

As already mentioned, the monitoring center can be designed so that it displays the status of the windows either individually or in groups. In order to take up as little time as possible for the data connections between the controls or microprocessors of the individual windows and the monitoring center, the signals of the position sensor arrangements are already linked to one another on the window side when the status is displayed in groups. Insofar as microprocessors are provided, this can take place in these. For the sake of simplicity, however, the individual position sensor arrangements, in particular if they are switching contacts, are connected to one another in a logical AND circuit.

The individual microprocessors, which are arranged locally adjacent to the windows assigned to them in order to reduce the amount of cabling, can be controlled remotely from the assigned window via remote control devices. The remote control device allows the window to be operated e.g. from sight within a room of the building, for example from a seat that is out of reach of the window.

In addition, the microprocessors are preferably connected via a data bus, for example a ring line, to a common, centrally located monitoring center in which the pivoting and / or locking positions of the windows detected by the sensor arrangements can be displayed individually or in groups on an optical display device. The data processing capacity of the microprocessors is therefore not only used for remote control operation of the motor drives, but also for data transmission for monitoring purposes. The program control of the microprocessors synchronizes the operating sequence of the motor arrangements, in particular if they have separate motors for the locking drive of the locking fitting and the pivoting drive of the casement. Thus, only short trigger signals have to be transmitted via the remote control devices, which is the case with wireless users Remote control devices with transmitters that are preferably operated independently of the network are advantageous for reducing the power requirement. The occupancy of the data connection to the monitoring center can also be limited in time with the aid of the locally arranged microprocessors, as a result of which the number of microprocessors and windows which can be connected to the monitoring center can be increased considerably. This is particularly advantageous if the monitoring center is also provided with a central operating device, via which the windows of the microprocessors can be controlled individually, selectively or in groups, or all together.

In a preferred embodiment, the motor drive comprises a locking motor that drives the locking fitting and a separate wing pivot motor that drives the pivoting movement. The separation of the motors has the advantage that even conventional tilt and turn lock fittings can be easily and optionally retrofitted with a motor drive. The microprocessor switches the motors on one after the other in time, namely for the opening movement first the locking motor in the unlocking direction and then the wing swivel motor in the opening direction and for the closing movement first the wing swivel motor in the closing direction and then the locking motor in the locking direction. Limit switches, to which the microprocessor responds, are expediently assigned to both the locking motor and the wing swivel motor. In order to be able to exclude overlapping switch-on times of the two motors with certainty, it is provided in a preferred embodiment that the microprocessor actively brakes the motors when the associated limit switches are actuated, for example by the Power lines of the electric motors are short-circuited.

In a preferred embodiment, the microprocessor monitors the current of the electric motors of the motor arrangements. If the motor arrangement is inadvertently or blocked by attempts at sabotage, the motor current rises above a threshold value monitored by the microprocessor. The microprocessor then generates a monitoring signal which represents the blocking of the motor arrangement and which is displayed selectively in the monitoring center in association with the window or group of windows and, if necessary, is used to trigger the alarm. In order to be able to distinguish only a brief inhibition of the motor arrangement from an actual blocking, the monitoring signal is expediently only generated if it occurs for the duration of a predetermined time interval. After the predetermined time interval has elapsed, the motor arrangement is then switched off in order to avoid overload damage.

The remote control device connected to the microprocessor can be cable remote controls, in which a control panel or the like which is arranged away from the window is connected to the microprocessor via a connecting cable. However, the remote control device preferably works wirelessly and comprises a wireless transmitter, in particular an infrared transmitter, which controls the microprocessor via a receiver connected to the microprocessor.

In a preferred embodiment of the invention, the central operating device assigned to the monitoring center not only allows the selective or collective control of the windows, but also the selective or collective blocking of the motor arrangements, in particular by blocking the microprocessors against control by the remote control devices assigned to the microprocessors. In this way, the windows can be selectively or collectively locked against remote control to increase the security. Since this electrical blocking does not affect the manual operation of the locking fitting, the window can still be opened manually in emergencies. The window can also be equipped with alarm contacts that trigger an alarm system via the monitoring center if the window is opened manually despite the microprocessors being blocked. Additionally or alternatively, however, a blocking device which mechanically blocks the drive rod arrangement of the locking fitting can also be provided, which also locks the drive rod arrangement in its locked position against manual operation of the locking fitting. To increase The sabotage security is expediently provided that the blocking device has a bolt which is resiliently biased into the blocking position and which must be released for each unlocking movement of the drive rod arrangement by energizing the electromagnet. The excitation of the electromagnet is controlled by the microprocessor so that it can in turn be blocked centrally. In order to be able to open the window manually when the system is not centrally blocked, switch contacts for controlling the electromagnet can be provided on the handle of the locking fitting.

The remote control of the closed state of a window explained above can also be used for the control of the window depending on a state parameter, in particular of the room air. In this aspect of the invention, at least one window is provided, which has a manually operated locking fitting, preferably designed as a tilt and turn fitting. A motor arrangement drives both the locking fitting and the pivoting movement of the casement of the window. The motor arrangement is controlled by a controller which responds by means of at least one sensor to a state parameter, in particular the room air in the building. The control in this case comprises a first control part connected via a line connection to the sensor and a wireless transmitter and a likewise connected via a line connection to the motor arrangement and a receiver assigned to the transmitter connected second control part. While the second control part is expediently arranged locally adjacent to the window, the first control part can be arranged at a location suitable for detecting the state parameter without cables or the like having to be laid to the second control part during assembly. The transmitter is in turn expediently an infrared transmitter, preferably a battery-operated infrared transmitter, and the second control stage is again preferably designed as a microprocessor, which has the advantage that the system in the manner explained above is a monitoring center and a central operating device can be supplemented.

In a preferred embodiment, the sensor of the controller detects the relative humidity of the room air. In this way, the rooms in the building can be ventilated depending on the relative humidity, which prevents mold growth, especially in rooms where there is a risk of moisture. Alternatively or additionally, sensors responsive to the temperature or the CO₂ content of the room air can be provided in order to control the room climate as a function thereof. The control is expediently carried out in such a way that the window is opened when the level of the room air parameter detected by the sensor is above a first threshold and that the window is closed when the level is below a second threshold which is lower than the first threshold. The resulting hysteresis allows the sensitivity to be adjusted and prevents control oscillations.

Additionally or alternatively, sound level sensors can also be provided instead of the sensors explained above that respond to the sound level outside the building and close the window when the sound level is above a predetermined value. This sound level-dependent control of the closing movement of the window can also be implemented without remote control, since the sound sensor is expediently arranged in the area of the window.

Another variant, which can also be implemented without remote control, is that at least one of the windows is controlled by a sensor which responds to the flow velocity of the room air, in particular in the area of the window. In this way, at least one of the windows can be closed automatically when there are drafts in the room.

Fig. 1

eine perspektivische Darstellung eines mit einem Drehkipp-Verriegelungsbeschlag versehenen Fensters in Kippöffnungsstellung;

Fig. 2

ein Blockschaltbild eines unter Verwendung von Fenstern gemäß Fig. 1 aufgebauten Fenstersystems für ein Gebäude;

Fig. 3 und 4

perspektivische Darstellungen magnetischer Positionssensoranordnungen für die Erfassung des Verriegelungs- und Schließzustands eines Fensters gemäß Fig. 1;

Fig. 5

eine Schnittansicht einer Stößelkontakt-Positionssensoranordnung für ein Fenster gemäß Fig. 1;

Fig. 6

einen Längsschnitt durch einen in einen Handdrehgriff integrierten Verriegelungsantrieb für ein Fenster gemäß Fig. 1;

Fig. 7

eine teilweise aufgebrochene Draufsicht auf den Handdrehgriff aus Fig. 6;

Fig. 8

einen Querschnitt durch den Handdrehgriff gesehen entlang einer Linie VIII-VIII in Fig. 7;

Fig. 9

eine teilweise geschnittene Oberansicht eines Flügel-Antriebs des Fensters gemäß Fig. 1 bei gekipptem Flügelrahmen;

Fig. 10

einen Vertikalschnitt durch den Flügel-Kippantrieb gemäß Fig. 9 bei geschlossenem Flügelrahmen;

Fig. 11

einen Querschnitt durch den Flügel-Kippantrieb, gesehen entlang einer Linie XI-XI in Fig. 9 und

Fig. 12

eine Schnittansicht einer elektromagnetischen Blockiereinrichtung des Fensters gemäß Fig. 1.

The invention will be explained in more detail below with reference to a drawing. Here shows:

Fig. 1

a perspective view of a window with a turn-tilt locking fitting in the tilt open position;

Fig. 2

a block diagram of one using Windows constructed according to Figure 1 window system for a building.

3 and 4

perspective representations of magnetic position sensor arrangements for detecting the locking and closing state of a window according to FIG. 1;

Fig. 5

a sectional view of a plunger contact position sensor arrangement for a window according to FIG. 1;

Fig. 6

a longitudinal section through a locking drive integrated in a hand grip for a window according to FIG. 1;

Fig. 7

a partially broken plan view of the handle of Fig. 6;

Fig. 8

a cross section through the hand grip seen along a line VIII-VIII in Fig. 7;

Fig. 9

a partially sectioned top view of a wing drive of the window of Figure 1 with the sash tilted.

Fig. 10

a vertical section through the wing tilt drive according to FIG 9 with closed wing frame.

Fig. 11

a cross section through the wing tilt drive, seen along a line XI-XI in Fig. 9 and

Fig. 12

2 shows a sectional view of an electromagnetic blocking device of the window according to FIG. 1.

The window of a building shown in Fig. 1 comprises a frame 1 arranged in a vertical plane and a wing frame 7 which can be rotated alternately about a lateral vertical axis 3 or tiltable about a lower horizontal axis 5 on the frame 1. For this purpose, the wing frame 7 is on a lower one The side corner is mounted in a corner bearing 9 (not shown in more detail) and is locked on the one hand on the frame 1 by a drive rod arrangement 11 which is at least partially concealed in a folded peripheral surface of the sash frame 7 and on the other hand switched between the tilting operation and the rotating operation. The drive rod assembly 11 is moved in the circumferential direction via a drive rod gear, not shown, by means of a rotary handle 13, which is rotatably mounted on the axis of rotation 15 of the sash 7 at right angles to the plane. The drive rod assembly 11 encircles essentially the entire sash 7 and is provided with a plurality of circumferentially distributed locking pins, two of which are shown at 14 and 15. When the window is closed and locked, the locking pins 14, 15 engage in striking plate pieces 17, 19 which are embedded in the inner fold surface of the frame 1. When the window is closed and locked, the rotary handle 13 assumes the position A shown in FIG. 1, from which it can be rotated into a tilt opening position C via a pivot opening position B. In the rotational opening position B, a locking pin 21 provided on the drive rod arrangement 11 locks an extension arm 25 attached to the frame 1 via a pivot bearing 23, in which the locking pin 21 engages in a counter member 27 of the opening arm 25. The wing frame 7 defined by the corner bearing and the swivel joint 23 can thus be rotated about the axis of rotation 3.

In the tilt opening position C, the locking pin 21 is extended from the counter member 21 of the extension arm 25 and the drive rod arrangement 11 has locked a pivot bearing 29 diagonally opposite the pivot bearing 23. The sash frame 7 guided on the extension arm 25 can thus be tilted about the tilt axis 5.

As far as described so far, the window is conventional. In addition, however, the window is provided with an interlocking drive 31 integrated in the rotary handle 13, which is explained in more detail below with reference to FIGS. 6 to 8 and, independently of the manual rotary adjustment of the rotary handle 13 in the position of the rotary handle 13 shown in FIG. 1, the drive rod arrangement 11 can drive between a drive rod position assigned to the locking position A into the drive rod position assigned to the tilt opening position C. Furthermore, a tilt drive 33 is arranged on the upper horizontal leg of the frame 1, which can be coupled to the drive rod arrangement 11 of the sash frame 7 via a pivotably driven scissor lever 35 and drives the sash frame 7 in the tilting direction in the tilt-open position of the drive rod arrangement 11 independently of the rotary handle 13. Details of the tilt drive are explained below with reference to FIGS. 9 to 11. The window further comprises at least one position sensor arrangement consisting of two mutually assigned sensor parts, which detect the locking position of the drive rod arrangement 11 and / or the closed or tilt-open position of the casement 7. Details of position sensor arrangements are explained below with reference to FIGS. 3 to 5.

For monitoring the locking and closing state and for controlling the locking and tilting drives of a plurality of windows 41 according to FIG. 1, microprocessors 43 are provided in close proximity to the windows 41, each of which either a single window 41 or a group of spatially adjacent, for example controls window 41 associated with the same room in the building. The microprocessors 43 are connected via connection lines 45 to the position sensor arrangements, the locking drives and the tilt drives of the windows 41 assigned to them. The microprocessors 43 are in turn connected via a data ring line 47 to a remote monitoring center 49, in which the locking and closing status of the individual windows is indicated optically, so that the locking and locking status of all windows of the building can be monitored from a central location. The data ring line 47 can be the power network of the building, to which the microprocessors 43 as well as the monitoring center are coupled via data coupling stages. However, the data ring line 47 can also be formed by a line additionally laid in the building. A diode field 51 can be provided for the optical display of the locking and closing state of the windows 41, which indicates the locking and closing state by means of light-emitting diodes 53 for each individual window or for each group of windows. To display the closed and locked status on the one hand and the unlocked or opened status on the other hand, light-emitting diodes of different colors, such as green and red, can be used. The microprocessors 43 pass the locking and firing status information, controlled by a controller 55 of the monitoring center 49, one after the other Monitoring center 49 from. The microprocessors 43 can be queried in the form of a cyclic time-division multiplex method; However, address codes for the identification of the microprocessors 43 and the windows 41 assigned to them can also be transmitted together with the status information. In the case of a large number of windows to be monitored in particular, the controller 55 is expediently a computer which can also take on additional control and monitoring measures, such as, for example, the central control of the windows 41 or a graphical representation of the locking and closing state of the Window via a monitor 57, which visually displays the status information of the windows in text form and / or in a graphical representation, including a floor plan of the building. The controller 55, which is designed as a computer, can also be used for remote data transmission via suitable interface circuits 59.

The locking and closing state of the windows 41 can be remotely controlled from the neighborhood without having to approach the window to be opened or closed. For this purpose, a remote control receiver 61 is connected to the microprocessor 43, which responds to a wireless remote control transmitter 63. The remote control transmitter 63, which is preferably an infrared transmitter, has control buttons for the status control of the windows 41 connected to the microprocessor 43. When the control command for opening one of the windows is sent, the microprocessor 43 first switches on the locking drive of the window in the unlocking direction to then control the tilt drive in the opening direction after unlocking the window. In response to a closing command First the tilt drive is controlled in the closing direction and then the locking drive is switched on in the locking direction. Both the locking drive and the toggle drive are provided with limit switches to which the microprocessor 43 responds in order to prevent the two drives from being switched on at the same time. Since the drives may have a comparatively long run-on time, it is expediently provided that the microprocessor 43 short-circuits the electric motors of the drives via suitable output circuits when the limit switches of the drives respond and thus actively brakes electrically.

The microprocessors also monitor the level of the drive current of the electric motors. The nominal current of each electric motor that occurs during normal operation increases sharply when the motor is blocked. The microprocessor compares the current level with a predetermined current threshold value and generates a monitoring signal representing the blocking of the electric motor if the threshold value is exceeded. Controlled by the microprocessor 43, the monitoring center optically indicates the occurrence of the monitoring signal on the diode field 51 or the monitor 57 and triggers an alarm device if necessary. With the help of the current monitoring of the electric motors, not only unwanted blocking of the window can be detected, for example by an object jammed between the frame 1 and sash 7, but also attempts at sabotage, in which the closing of the window is to be intentionally prevented. Since the motor current can occur in operation in individual cases even with only a brief inhibition, for example due to a stiff sash frame, the microprocessor 43 expediently also monitors the period of time within which the overcurrent occurs.

The monitoring signal representing the blocking state is only reported to the monitoring center 49 if it has occurred continuously during a predetermined time interval. False alarms can be avoided in this way. The microprocessor 43 also switches off the motor which is operated with overcurrent during the predetermined time interval and thus prevents damage to the motor from overloading.

The windows 41 can not only be controlled remotely from the neighborhood, but also via a central operating device 65 of the monitoring center 49. The operating device 65 is designed such that it allows the specific control of individual windows by specifically selecting the assigned microprocessor 43, as well the collective control of groups of windows, for example a floor or a room, as well as the collective control of all windows in each case by pressing the special keys provided for this purpose. The microprocessors 43 are again addressed in accordance with the cyclical call scheme of the controller 55 or via address codes which are specifically assigned to the microprocessors or windows.

In addition or as an alternative to the local control of the microprocessors 43 by means of expediently transportable remote control transmitters 63, further remotely located remote control transmitters 67, in particular infrared transmitters, can be provided, which have a sensor 69 which responds to a state parameter of the room air are connected and control the opening state of the windows connected to the assigned microprocessor 43 as a function of the detected value of the room air parameter. The sensor 69 is, for example, a sensor that detects the relative air humidity and opens the window when the value of the air humidity exceeds a predetermined threshold value. In this way, mold formation and the like can be avoided in rooms at risk of moisture. The window closes when the moisture falls below the threshold again. In order to introduce a hysteresis property of the control, the threshold value controlling the closing movement is preferably somewhat smaller than the threshold value provided when the window is opened. Alternatively, however, additional sensors can also be provided, which respond, for example, to the room temperature or the CO₂ content of the room air and ensure that the window is opened or closed automatically when predetermined values of the parameters are exceeded. As a further measure which increases the ease of use of the window system, it can be provided that the sensor 69 responds to the sound level outside the building, so that the window is closed automatically, for example in the event of road or aircraft noise. Finally, as a further comfort-increasing measure, a sensor 71, which responds to the flow velocity of the air in the area of a window, can be connected to the microprocessor or possibly the remote control transmitter 67, which controls the window in dependence on the draft air.

3 to 5 show variants of position sensor arrangements as they can be used to monitor the locking and closing state of a window according to FIG. 1 used in a system according to FIG. 2. Fig. 3 shows a corner deflection of a drive rod arrangement with a faceplate bracket 73, which is provided at its ends with connectors 75 for extension parts of faceplate rails 77. On the legs of the faceplate angle 73 are connecting pieces 79 for driving rods 81 movable in the circumferential direction of the casement 7, which are coupled to one another in the corner region of the faceplate angle 73 by a flexible steel band 83. The connecting pieces 79 carry locking pins 13, 15 for engaging in the striking plate pieces 17, 19 of the frame 1 in Fig. 1. The drive rods 81 and thus the locking pins 13, 15 are, corresponding to the positions A, B and C of the rotary handle 13 in Fig 1 is movable between a locking position A, a rotary opening position B and a tilt opening position C, both by turning the rotary handle 13 and via the locking drive 31. To detect the position, the locking pin 15 lying in the upper circumferential surface of the fold is covered, ie not visible , A permanent magnet 85 is provided, which overlaps in the locking position A with a magnetic field sensitive sensor, for example a Hall switch 87, when the window is closed. The Hall switch 87 thus responds only when the window is closed and locked and does not respond when one of the two conditions is not met. The signals of the Hall switch 87 form the status information displayed by the monitoring center and are also used to control the locking drive 31 and the tilt drive 33 by means of the microprocessor 43.

FIG. 4 shows a variant of a position sensor arrangement which differs from the arrangement according to FIG. 3 only in the number and arrangement of its sensors. Identical components are with the 3 and to distinguish them with the letter a. For explanation, reference is made to the description of FIG. 3. In contrast to FIG. 3, the position sensor arrangement comprises a plurality of magnetic field sensors provided on the sash frame 7, via which both the locking position A and the tilt opening position C of the drive rods 81a and the closed position of the sash frame 7 can be detected separately. On the inside of the faceplate angle 73 and thus concealed, a first permanent magnet 89 is connected to the connecting rod connector 79, the position of which is detected by two Hall switches 91 and 93 in the locking position A on the one hand and the tilt opening position C on the other. The rotary opening position B can be monitored by a logical combination of the output signals of the Hall switches 91, 93. A second permanent magnet 95 is arranged on the frame 1 and is detected in the closed position of the window by a magnetically sensitive sensor, in particular a Hall switch 97. The signals of the Hall switches 91, 93 and 97 are evaluated in the assigned microprocessor 43 and transmitted to the monitoring center 49 (FIG. 2). A high degree of security against manipulation is achieved by the separate evaluation of the individual drive rod positions and the closed position of the casement.

5 shows a further position sensor arrangement with comparatively high manipulation security in the form of a plunger contact 101 arranged on the casement 7 similar to the sensor part 37 in FIG. 1 and having a mating contact part 103 as a second sensor part similar to the sensor part 39 in FIG. 1 in the fold inner surface of the window frame 1 assigned. The tappet contact 101 is in the folded peripheral surface of the casement 7 through a faceplate 105 covered and exits through an opening 107 of the faceplate 105. The plunger contact 101 is held on a lever part 109, which in turn is pivotally mounted on a bearing block 111 which is fixedly connected to the faceplate 105 about an axis 113 extending approximately perpendicular to the plane of the sash 7. By pivoting the lever part 109 into the position indicated by dashed lines in FIG. 5, the plunger contact 101 can be withdrawn completely behind the faceplate 105.

The pivoting movement of the lever part 109 is controlled by a cam part 117 which is fixedly connected to a drive rod 115 of the drive rod arrangement 11 and which moves together with the control movement of the drive rod 115 along the lever part 109. In order to be able to control the lever part 109 non-positively in both pivoting directions, it is designed as a double-armed lever which carries the plunger contact 101 on one arm 119 and has a second arm 121 on the side of the axis 113 opposite the arm 119. The arms 119, 121 form cam tracks which are inclined at an obtuse angle to one another, on which the cam part 117 slidably abuts. 5 shows the locking position of the drive rod 115, in which the cam part rests on the arm 119 and presses the plunger contact through an opening 123 of the drive rod 115 and the opening 107 of the faceplate 105 against the mating contact 103. In the tilt-open position of the drive rod 115, the cam part 117 rests on the arm 121, as a result of which the arm 119 is folded back into a recess 125 in the casement 7. The displacement movement of the drive rod 115, which transfers the cam part 117 onto the arm 121, at the same time brings the end edge 127, which is located in the direction of movement, over the opening 107 of the faceplate 105, with which both in the rotational opening position and the tilt opening position of the drive rod 115, the opening 107 of the faceplate 105 is covered by the drive rod 115. The plunger contact 101 is thus protected against manipulation in positions of the drive rod 115, which allow the window to be opened. Although the plunger contact 101 can have spring properties, spring properties of the lever part 109 made of plastic are expediently used. For this purpose, the arm 119 is provided with a recess 129 which weakens its cross section between the tappet contact 101 and the axis 113.

6 to 8 show details of the construction of the hand turning handle 13 from FIG. 1. The hand turning handle 13 comprises a base part 131 which can be screwed onto the casement 7 in the usual way and on which a lever handle 135 is rotatably mounted about the axis 15 via a bushing 133 is. The lever handle 135 forms a housing for the locking drive 31, which consists of an electric motor 137, a spindle drive 139 and a rack and pinion gear 141. The spindle drive 139 has a threaded spindle 143 running in the longitudinal direction of the lever handle 135, which is driven by the co-axially arranged electric motor 137. The threaded spindle 143 intersects the axis 15 and bears a spindle nut 147 on opposite housing walls 145 which cannot be rotated but is displaceably guided and to which a toothed rail 149 is fastened, for example screwed, parallel to the threaded spindle 143. The toothed rail which moves with the spindle nut 147 meshes with a pinion 151 which is seated in a rotationally fixed manner on the handle-side end of a square mandrel 153 which is coaxial with the axis of rotation 15. The square mandrel 153 rotatably engages in the drive rod arrangement 11 in a manner not shown in detail shifting drive rod gearbox. At the end of the lever handle 135 remote from the axis of rotation there is provided a finger button 155 which is displaceably guided in the longitudinal direction of the lever handle 135 and is biased by a compression spring 157 with its locking projection 159 into a recess 161 of the base part 131. The finger button 155 forms a torque support for the reaction torque exerted by the electric motor 137 on the lever handle 135 when the mandrel 153 is driven. Since the spindle drive 139 has self-locking properties, the lever handle 135 can also be rotated manually with the mandrel 153 after the finger button 155 has been pressed and the locking projection 159 has been disengaged. The window can thus be locked and unlocked independently and in any position of the spindle drive, which is particularly important for emergencies.

In the two opposite end positions of the spindle nut 147, two limit switches 163 for controlling the electric motor 137 are assigned to the spindle drive 139. The limit switches 163 are connected to the microprocessors 43 in the system according to FIG. 2. The microprocessor cannot use the limit switches 163 to control the electric motor 137, in particular for its active electrical braking, but also as a position sensor arrangement for monitoring the position of the drive rod arrangement, since the lever handle 135 locks in its rest position with the base part 131 when the drive rod arrangement is motorized is thus in a predetermined position. The connecting lines to the limit switches 163 and to the electric motor 137 are via resilient plunger contacts 165 in the region of the free end of the lever handle 135 remote from the axis of rotation from the lever handle 135 to the base part 131 led. As shown in FIG. 7, the plunger contacts 165 are arranged in two rows running essentially in the longitudinal direction of the lever handle 135 and offset from row to row so that they move in different and not unintentionally contacting circular paths when the lever handle 135 rotates.

Due to the coaxial arrangement of the electric motor and spindle drive in the longitudinal direction of its lever handle, the hand-operated rotary handle 13 explained above has comparatively small dimensions. The toggle drive 33 shown in detail in FIGS. 9 to 11 also has similarly small dimensions. The toggle drive 33 has a two-part housing 167 with a rectangular cross section, which is inserted in a corner recess in the frame 1 on the end face and flush on the inside of the rebate surface. The housing 167, which is elongated in the circumferential direction of the frame 1, accommodates an electric motor 169 and a spindle drive 171 driven by the motor 169 coaxially alongside one another in the longitudinal direction. The spindle drive has a threaded spindle 173 driven by the motor 169, on which sits a spindle nut 177 which is rotatably but axially displaceable between opposing wall surfaces 175 of the housing 167. The scissor lever 35 is pivotably mounted outside the housing 167 on an axle pin 181 which is passed through a longitudinal slot 179 of the spindle nut 177 and is held in the housing 167 on both sides of the spindle nut 177. In the installed position, the axle journal 181 runs perpendicular to the longitudinal direction of the upper leg of the window frame 1 and parallel to the plane of the window frame 1. In the spindle nut 177, a further axle journal 183 is also held, which is held by a snap ring 185 is axially secured between the scissor lever 35 and the housing 167 (FIG. 11) and emerges from the housing 167 through an elongated hole 187 (FIG. 9) extending in the direction of displacement of the spindle nut 177 and engages in an elongated hole 189 extending along the scissor lever 35. The free end of the scissor lever 35 carries a mushroom pin 191 which, when the sash frame is tilted, engages in a guide rail 193 which extends along the upper leg of the sash frame. The guide rail is firmly seated on a drive rod 195 and, together with the mushroom pin 191, forms a travel compensation coupling, via which the pivoting movement of the scissor lever 35 driven by the motor 169 is converted into a tilting movement of the casement. The guide rail 193 has an essentially C-shaped cross section and accommodates the head widening of the mushroom bolt 191 in an undercut manner in its guide channel.

The length and position of the guide rail 193 relative to the drive rod 195 is dimensioned such that the mushroom pin 191 lies outside the guide rail 193 both in the locking position and in the rotational opening position of the drive rod 195 when the scissor lever 35 in its window corresponding to the closed, parallel to Drive rod 195 is in the position in which it is shown in FIG. 10. In this position of the scissor lever 35 of the tilt drive 33, the drive rod 195 can be opened manually by manually actuating the rotary handle 13 (FIG. 1) into the rotary opening position B, for example in the event of a defect in the tilt drive or in emergencies. If the window is to be tilted by a motor, the drive rod 195 is moved by means of the locking drive 31 into the tilt opening position in which the guide rail 193 engages the mushroom pin 191.

The spindle drive 171 is in turn assigned two limit switches 197 which can be actuated by the spindle nut 177 and which are connected in a manner not shown in more detail via connecting lines to the assigned microprocessor 43 (FIG. 2). The microprocessor 43 controls the operation of the electric motor 169 as a function of the actuation of the limit switches 197 and in particular as a function of the limit switches 197 controls the electrically active braking operation of the motor. In addition, the two limit switches 197 can also be used here as position sensors for the tilting position of the casement.

The housing 167 of the tilt drive 33 is fastened in the cutout of the frame 1 by means of a mounting flange 199 which is integrally formed on the housing 167. The fastening flange 199 is arranged symmetrically in the axial direction of the axle bolts 181, 183, and the axle bolts are arranged on the housing 167 in such a way that they can be plugged over. The tilt drive 33 can thus be used equally for left- or right-hinged windows.

For some applications, windows should be able to be blocked so that at least they cannot be opened via the locally assigned remote control. In the system according to FIG. 2, it is provided that the microprocessors 43 of the individual windows 41 or the window groups assigned to the microprocessors 43 can be blocked selectively or also collectively or in groups by means of the operating device 65 of the monitoring center 49, so that they can control commands that they cannot reach from remote control receivers 61 or other control devices. The blocking commands are expediently coupled with closing and locking commands, so that the blocking in the closed and locked state of the windows he follows. The purely electrical blocking of the electrical window actuation has the advantage that the windows can still be opened manually in emergency situations.

FIG. 12 shows a variant which, in addition or optionally also as an alternative to the electrical blocking explained above, permits mechanical blocking of the drive rod arrangement 11 (FIG. 1). The blocking device according to FIG. 12 comprises a support part 205, not shown in detail at 201 with a faceplate 203 of the drive rod arrangement, on which an angle pawl 207 is pivotally mounted about an axis 209 running perpendicular to the plane of the sash frame 7. The angle pawl 207 has a pawl arm 211 which protrudes from the axis 209 substantially parallel to a drive rod 213 of the drive rod arrangement counter to the opening movement direction (arrow 215) of the drive rod 213. A recess 217 is provided in the drive rod 213 at a point corresponding to the latch arm 211 in the locked position of the drive rod 213, into which the latch arm 211 is biased by a compression spring 219 held on the supporting part 205, as is shown by a dash-dotted contour in FIG 12 is indicated. The pawl arm 211 thus automatically blocks the drive rod 215 in its locking position and must be actively moved out of the blocking position for the unlocking process and for the switching of the locking fitting into the rotary opening position or the tilt opening position. For unlocking the blocking device, an electromagnet 221 is provided on the support part 205, the armature plunger 223 of which is displaceably mounted parallel to the drive rod 215 and the angle pawl 207 via its actuating arm running at right angles to the pawl arm 211 225 pivots against the force of the spring 219. The electromagnet 221 is excited via the microprocessors 43 (FIG. 2) together with the locking drive. If the microprocessors 43 are electrically blocked via the operating device so that they cannot execute local commands, the electromagnet 221 is not energized and the drive rod arrangement of the window is also blocked against manual unlocking. In order to still be able to open the window manually in the case of non-blocked microprocessors, 13 switching contacts can be provided on the rotary handle, for example, which close the excitation circuit of the electromagnet 221 when the locking fitting is operated manually.

Claims (31)

1. Window system for a building with several windows (41), each comprising an outer frame (1) and a vent frame (7) mounted to pivot on the outer frame (1) and each having a manually operable lock fitting (11, 25), in particular a turn-and-tilt lock fitting to release the vent frame (7) either for a turning pivoting movement around a vertical axis (3) or for a tilting pivoting movement around a horizontal axis (5), and a drive rod arrangement (11), which is located at least partially concealed in a peripheral rebate of the vent frame (7) and is movable in the peripheral direction of the vent frame (7), with a motor arrangement (31, 33) driving both the lock fitting (11, 25) and the vent frame (7) during its pivoting movement, in particular during its tilting pivoting movement, and with a control means (43, 49) for the motor arrangement (31, 33), characterised in that each window (41) is provided with a sensor arrangement (37, 39; 85, 87; 89-97; 101, 103; 163; 197) detecting the pivoting position of the vent frame (7) and the locking position of the lock fitting (11, 25); that the sensor arrangement (37, 39; 85, 87; 89-97; 101, 103; 163; 197) of each window (41) comprises a two-part position sensor arrangement, wherein the first sensor element (37; 85; 89, 97; 101; 147; 177) is held on the drive rod arrangement (11) of the window and is connected to this for drive, and the second sensor element (39; 87; 91, 93, 95; 103; 163; 197) is fixed to the vent frame (7) or the outer frame (1);
   that each window (41) or each group of windows (41) has a microprocessor allocated to it which is connected to the sensor arrangement (37, 39; 85, 87; 89-97; 101, 103; 163; 197) and the motor arrangement (31, 33) of each window (41) allocated to it, and controls the motor arrangement (31, 33) dependent on signals from the sensor arrangement (37; 85; 89, 97; 101; 147; 177);
   that the position sensor arrangement generates a first signal when its sensor elements are aligned and a second signal in the absence of alignment; and that the position sensor arrangements of the windows (41) are connected via the respective allocated microprocessor (43) to a joint central monitoring unit (49), at which the presence of the first or the second signal of the position sensor arrangement of at least one window (41) may be displayed by means of a visual display unit (51, 57) for each individual window (41) or for groups of windows (41).
2. Window system according to Claim 1, characterised in that the central monitoring unit (49) has a control unit (55), in particular in the form of a computer, which polls the position sensor arrangements (37, 39; 85, 87; 89-97; 101, 103; 147, 163; 177, 197) of the windows (41) or groups of windows (41) cyclically for the display of their signals.
3. Window system according to Claim 1 or 2, characterised in that a microprocessor (43) located in the vicinity of the window (41) or group of windows (41) is allocated to each window (41) or each group of windows (41), the position sensor arrangements (37, 39; 85, 87; 89-97; 101, 103; 147, 163; 177, 197) of the allocated windows (41) being connected to said microprocessors; and that the control unit (55) of the central monitoring unit (49) cyclically polls the microprocessors (43).
4. Window system according to one of Claims 1 to 3, characterised in that the position sensor arrangements (37, 39; 85, 87; 89-97; 101, 103; 147, 163; 177, 197) belonging to a group of windows (41) are connected to one another in a logical AND circuit.
5. Window system according to one of Claims 1 to 4, characterised in that the visual display unit comprises LEDs (53) allocated to the individual windows (41) or individual groups of windows (41) and/or is in the form of a text display (57), and/or is in the form of a graphic display (57), in particular for representation of a graphic showing a plan of the building.
6. Window system according to one of Claims 1 to 5, characterised in that the first sensor element is in the form of a magnet (85; 89), which is fastened to the drive rod arrangement (11) and may be moved with this in the peripheral direction of the vent frame (7), and the second sensor element is in the form of a magnetic field sensor (87; 91, 93), in particular a Hall-effect switch.
7. Window system according to Claim 6, characterised in that the magnet (85) is held on a locking pin (15) projecting from the drive rod arrangement (11) towards the outer frame (1); and that the magnetic field sensor (87) is disposed on a locking plate (19) of the outer frame (1) allocated to the locking pin (15) and responds to the magnet (85) engaging into the locking plate (19) when the window is locked.
8. Window system according to Claim 6, characterised in that several position sensor arrangements are provided on each window, of which a first one (95, 97) responds to the closed position of the vent frame (7), a second (89, 91) to the locking position of the drive rod arrangement (11) and a third (89, 93) to the unlocking position of the drive rod arrangement (11) permitting a pivoting movement of the vent frame (7).
9. Window system according to Claim 8, characterised in that the second (89, 91) and third (89, 93) position sensor arrangements have magnetic field sensors (91, 93), which respond to a joint magnet (89) disposed on the drive rod arrangement (11) and located inside the vent frame (7).
10. Window system according to one of Claims 6 to 9, wherein the lock fitting (11, 25) is constructed in the form of a turn-and-tilt lock fitting and has a drive rod corner drive (79, 83) in the vicinity of an upper corner of the vent frame (7) diagonally opposite a corner bearing (9), which guides the vent frame (7) during the turn-and-tilt movement, characterised in that the position sensor arrangement (85, 87; 89-97) is provided in the vicinity of the drive rod corner drive (79, 83) diagonally opposite the cover bearing (9).
11. Window system according to one of Claims 1 to 5, characterised in that the position sensor arrangement is constructed as a push rod contact arrangement (101, 103) with a push rod contact section (101) fastened to the vent frame (7) so as to be movable transversely to the peripheral surface of the vent frame (7) and a mating contact section (103) disposed on the outer frame (1); that the push rod contact section (101) is coupled to a drive rod (115) of the drive rod arrangement (11) via a wedge-type gear mechanism (117, 121) and emerges towards the mating contact section (103) when the drive rod arrangement (11) is in the locking position through an aperture (107) in a face plate (105) of the vent frame (7) covering the drive rod (115) and through an aperture (127) in the drive rod (115), which is flush with the face plate aperture (107) when the drive rod (115) is in the locking position, and is lifted out of the path of movement of the drive rod (115) when the drive rod arrangement (11) is in the unlocking position, which permits the pivoting movement of the vent frame (7); and that the dimensions of the aperture (127) in the drive rod (115) are such that it conceals the aperture (107) in the face plate (105) in the unlocking position.
12. Window system according to Claim 11, characterised in that the push rod contact section (101) is located on a lever element (109) running along the face plate (105) and connected to the face plate (105) by a joint with a spindle (113) substantially parallel to the face joint (105); and that the wedge-type gear mechanism (117, 121) is formed by a cam surface of the lever element (109) and a cam counter-surface of a cam element (117) fixed to the drive rod (115).
13. Window system according to Claim 12, characterised in that the lever element (109) is constructed in the form of a dual-arm lever; that the cam surface cooperating with the cam element (117) extends over both lever arms (117, 119); and that the cam surfaces of both lever arms (117, 119) enclose an obtuse angle.
14. Window system according to Claim 12 or 13, characterised in that the lever element (109) has elastic spring characteristics in at least one partial section between the push rod contact element (101) and the joint.
15. Window system according to one of Claim 1 to 5, characterised in that the window has a motor arrangement (31, 33), which drives both the lock fitting (11, 25) and the pivoting movement of the vent frame (7), in particular its tilting pivoting movement, and may be controlled by a remote control unit and/or an operating device (65) in the central monitoring unit (49); that the motor arrangement (31, 33) has limit switches (163, 197), one of which responds in the locking position of the drive rod arrangement (11, 25); and that at least this one limit switch (163, 197) is a component of the position sensor arrangement.
16. Window system according to one of Claims 1 to 15, characterised in that each window (41) or each group of windows (41) has a coding device allocated to it, which responds to the position sensor arrangement and which supplies the central monitoring unit (49) with specifically allocated to each window (41) or the group of windows (41) in dependence on signals from the position sensor arrangement; and that the central monitoring unit (49) responds specifically to the code signals to control the visual display unit (51, 57).
17. Window system according to one of Claims 1 to 16, characterised in that the microprocessor (43) is located spatially adjacent to the allocated window (41) or an allocated group of spatially adjacent windows (41) and is connected to a remote control device (61, 63, 67), by means of which the motor arrangement (31, 33) of each of the windows (41) allocated to the microprocessor (43) may be controlled at a distance from the microprocessor; and that several of the microprocessors (43) are connected in particular via a control circuit, in particular a ring circuit (47), to a joint central monitoring unit (49) located at a distance from them, on which the pivoting and/or locking positions of the windows (41) detected by means of the sensor arrangements (37, 39; 85, 87; 89-97; 101, 103; 163; 197) may be displayed either individually or in groups by means of a visual display unit (51, 57).
18. Window system according to Claim 17, characterised in that the motor arrangement (31, 33) has a locking motor (31) driving the lock fitting (11, 25) and a separate vent frame pivoting motor (33) driving the pivoting movement, in particular the tilting pivoting movement of the vent frame (7); and that the microprocessor (43) switches on the motors (31, 33) of the motor arrangement (31, 33) temporally in series, for the opening movement, first switching the locking motor (31) in the unlocking position and then the vent frame pivoting motor (33) in the opening direction, and for the closing movement, first switching on the vent frame pivoting motor (33) in the closing direction and then the locking motor (31) in the locking direction.
19. Window system according to Claim 18, characterised in that both the locking motor (31) and the vent frame pivoting motor (33) have the limit switches (163, 197) allocated to them, which detect the locking position and the unlocking position, which permits the vent frame (7) to be pivoted, on the one hand, and detect the closing and opening position of the vent frame (7), on the other hand; and that the microprocessor (43) responds to the limit switches (163, 197) and actively electrically brakes each of the individual motors (31, 33) when the allocated limit switch (163, 197) is actuated.
20. Window system according to one of Claims 17 to 19, characterised in that the remote control device (61, 63, 67) has a radio-controlled transmitter (63, 67), in particular an infrared transmitter, and a receiver (61), in particular an infrared receiver, connected to the microprocessor (43).
21. Window system according to one of Claims 17 to 20, characterised in that the central monitoring unit (49) has a central operating unit (65), by means of which the motor arrangements (31, 33) of the windows (41) or groups of windows (41) allocated to the microprocessors (43) may be selectively controlled, in particular may be blocked selectively in the locking position against control via the remote control devices (61, 63, 67) allocated to the microprocessors (43).
22. Window system according to one of Claims 17 to 21, characterised in that the lock fitting (11, 25) comprises a drive rod arrangement (11) laid in a peripheral rebate of the vent frame (7) and movable in the peripheral direction of the vent frame (7); that a blocking device (207, 221) is provided on the vent frame (7)to block the drive rod arrangement (11) in its locking position, said blocking device (207, 221) having a bolt (207) pre-tensioned by a spring (219) into its blocking position and an electromagnet (221) movable into a position for releasing the drive rod arrangement (11); and that the electromagnet (221) may be excited via the microprocessor (43).
23. Window system according to Claim 22, characterised in that the central monitoring unit (49) has a central operating unit (65), by means of which the microprocessors (43) for excitation of the electromagnets (221) allocated to the windows (41) or groups of windows (41) may be selectively blocked.
24. Window system according to Claim 22 or 23, characterised in that the bolt is constructed as a pivoting angle catch (207) mounted on a support section (205) of the blocking device (207, 221) holding the electromagnet (221), the free end of one of the arms (211) of this angle catch (207) engaging into a recess (217) in a drive rod (215) when the drive rod arrangement (11) is in the locking position, and the other arm (225), which runs transversely to the drive rod (215), may be exposed to the action of the electromagnet (221).
25. Window system according to one of Claims 17 to 24, characterised in that a central operating unit (65) is connected to the central monitoring unit (49) and may itself be controlled by means of a remote control unit (59), in particular a radio-controlled remote control unit, a remote data transmission unit or a voice control unit.
26. Window system according to one of Claims 1 to 25, characterised in that the control system (43, 61, 67) for controlling the pivoting movement of the vent frame (7) by means of at least one sensor (69) responds to a status parameter, in particular with respect to the ambient air in the building, and has a first control stage connected to the sensor (69) via a cable connection and comprising a radio-operated transmitter (67), in particular an infrared transmitter, and also has a second control stage (43), in particular in the form of a microprocessor, connected to the motor arrangement (31, 33) and to a receiver (61), in particular an infrared receiver, allocated to the transmitter (67) via a cable connection.
27. Window system according to Claim 26, characterised in that the sensor (69) responds to the relative humidity or the temperature or CO₂ content in the ambient air; and that the control system (43, 61, 67) opens the window (41) when the level of the ambient air parameter detected by the sensor (69) lies above a first threshold and closes the window (41) when the level lies below a second threshold, which is equal to or preferably lower than the first threshold.
28. Window system according to one of Claims 26 or 27, characterised in that a sensor (71) responding to the noise level outside the building is connected to at least one of the control stages, in particular to at least one of the second control stages (43); and that the control system (61, 67, 43) closes the window (41) allocated to it if the noise level exceeds a pre-set noise level.
29. Window system according to one of Claims 26 to 28, characterised in that a sensor (71) responding to the flow rate of the air in the room is connected to at least one of the control stages, in particular to at least one of the second control stages (43), to close at least one of the windows (41) allocated to this control stage (43) if the flow rate exceeds a pre-set value.
30. Window system according to one of Claims 1 to 29, characterised in that each motor arrangement (31, 33) has an over-current monitoring circuit (43), which generates a monitoring signal representing the blocking of the motor arrangement (31, 33) if a pre-set value for the motor current is exceeded; and the central monitoring unit displays the occurrence of the monitoring signal selectively allocated to the window (41) or the group of windows (41).
31. Window system according to Claim 30, characterised in that the over-current monitoring signal (43), in particular in the form of a microprocessor (43), generates the monitoring signal if the pre-set value of the motor current is exceeded for a pre-set period, and switches off the motor arrangement (31, 33) after the pre-set period has elapsed.

Images