EP0552459B1 - Safety device for roller shutters and similar closures - Google Patents

Safety device for roller shutters and similar closures Download PDF

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Publication number
EP0552459B1
EP0552459B1 EP92121127A EP92121127A EP0552459B1 EP 0552459 B1 EP0552459 B1 EP 0552459B1 EP 92121127 A EP92121127 A EP 92121127A EP 92121127 A EP92121127 A EP 92121127A EP 0552459 B1 EP0552459 B1 EP 0552459B1
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EP
European Patent Office
Prior art keywords
roller
revolutions
pulses
drive motor
end position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92121127A
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German (de)
French (fr)
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EP0552459A1 (en
Inventor
Wilhelm Rademacher
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Individual
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/43—Motors
    • E05Y2201/434—Electromotors; Details thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form, shape
    • E05Y2800/28—Form, shape tubular
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/146—Shutters
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6818—Control using sensors
    • E06B2009/6836—Control using sensors sensing obstacle
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6818—Control using sensors
    • E06B2009/6845—Control using sensors sensing position

Definitions

  • the invention relates to a blackout device or security device with the features of the preamble of claim 1.
  • Blackout devices of the type in question normally work with a roller shutter made of plastic slats, in the earlier embodiment also made of wood slats, or in a lighter version also with a roller blind made of thin plastic slats, the inclination of which is then usually adjustable.
  • a roller shutter made of plastic slats in the earlier embodiment also made of wood slats, or in a lighter version also with a roller blind made of thin plastic slats, the inclination of which is then usually adjustable.
  • the same technique is also known in the case of non-darkening security devices with rolling grilles or lamellar roller shutters, so that the invention relates to security devices of this type even without a blackout effect.
  • GB-A-2 189 906 discloses a darkening device from which the invention is based, in which the pulse-shaped signals generated by an optoelectronic sensor are evaluated with the aid of a controller in order to determine the position, the speed and the direction of movement of the darkening device.
  • the light path of a light barrier is interrupted by slats rotating depending on the movement of the darkening device, which slats are coupled to a drive device for the darkening device.
  • the direction of movement of the darkening device can be determined.
  • the control serves u. a. also determining the end position in the open as well as in the closed state of the darkening device.
  • a control device for an automatic door is known from US Pat. No. 4,529,920, in which the current position and direction of movement of the door is determined from the movement of a drive belt which transmits the movement of a motor to the movable door.
  • the determination of the position and the direction of movement of the door is carried out with the aid of two light barriers, the light paths of the two light barriers being interruptable by teeth arranged on the drive belt.
  • position sensors In a shading system or awning, it is known to design position sensors as incremental encoders controlled by the roller for winding up a curtain or the awning fabric, and ultimately to determine the end positions of the rollable curtain or the awning cover from the revolutions of the roller covered ( DE - A - 40 09 373).
  • the three aforementioned darkening devices have in common that with the help of a sensor from the rotational position of the drive mechanism for a movable darkening device or for a movable door, the reaching of the end position can be predetermined both in the open and in the closed state. It proves to be problematic here that the roller used for winding, for example, a roller shutter has such a large diameter that the accuracy required for determining the end position requires a resolution in the determination of the angular position which is only a fraction of a total revolution of the roller corresponds.
  • DE-C-33 04 962 and the DE-A-28 36 938 mentioned therein disclose a darkening device which has an electric drive motor designed as a tubular motor and a control device for this drive motor which works with electromechanical limit switches. All parts of this blackout device that are required in terms of installation technology are located in the roller shutter box.
  • the tubular motor is remotely controlled via a remote control.
  • the limit switches work electromechanically with a spindle and a spindle nut running on it, which actuates a switch when the roller shutter has reached the upper or lower end position. This is useful because the limit switches are in the immediate vicinity of the control device are arranged in the roller shutter box for the electric drive motor. Special arrangements on the window frame do not have to be realized.
  • the electro-mechanical end position sensors implemented here are problematic insofar as they can only be set when the roller shutter box is open and the setting is also relatively complicated. This is particularly problematic because the actual end positions of the roller shutter itself begin to deviate relatively quickly from the end positions defined by the limit switches due to mechanical changes and wear.
  • the invention is based on the object of realizing, as far as possible, electronically operating, easy to install and readjust and inexpensive control of the control device of a device of the type in question.
  • the object presented above is first achieved by the features of the characterizing part of claim 1.
  • the end position sensors are assigned to the roller or the drive motor and thus have the same advantage in this respect as the electromechanical limit switches of the prior art, but without the additional effort of the spindle and spindle nut. It is interesting that you can work almost entirely with electronic means. This makes it possible to additionally use the revolutions of the drive shaft as signals, specifically as correction signals (fine resolution) in conjunction with the signals serving as coarse signals which are derived from the revolutions of the roller. As a result, a very high level of accuracy in the positioning of the roller shutter or the roller grille can be achieved with little expenditure on electronics or evaluation technology.
  • the predetermined target values can be changed slightly and the changed mechanical conditions can be adapted by changes and wear. You do not have to open the roller shutter box and do not carry out any mechanical adjustment measures, everything can be done quickly and precisely by electronic means alone.
  • a darkening device of the type in question consists in its basic structure of a roller shutter 1, a roller 2 for winding the roller shutter 1, the roller 2 is normally arranged in a roller shutter box 3, which in turn in the Outer wall 4 of a building is installed, usually above a window 5.
  • a security device with a rolling grille which does not darken, a roller shutter door or the like.
  • an electric drive motor 6 is provided, which here is usually designed as a tubular motor and is arranged inside the roller 2.
  • the drive motor 6 is connected via a drive shaft 7 and a gear 8 to a driver 9 which is coupled to the roller 2 from the inside and transmits the torque generated by the drive motor 6 to the roller 2 (FIG. 3).
  • the drive motor 6 itself is mounted in a stationary manner on the outer wall 4, the outer wall 4 thus forms an abutment 10 which receives the counter torque from the drive motor 6.
  • the abutment 10 is specifically designed as a wall bracket on the outer wall 4 (Fig. 3, 4).
  • a control device 11 which is only schematically indicated in FIG. 1, is used for this purpose. This is controlled or actuated by various switches or sensors. It is not shown that this initially includes a manual on / off switch or a corresponding automatic switch, for example for a time control. In any case, this corresponds to the usual equipment as described in the prior art. However, these switches and sensors also include end position sensors 12, 13 for the upper and lower end positions of the roller shutter 1.
  • the end position sensors 12, 13 are assigned to the roller 2 and the drive motor 6 and electronically detect the revolutions of the roller 2 and the drive shaft 7 of the drive motor 6 and that the control devices 11 from the detected revolutions of the roller 2 and the drive shaft 7 of the Drive motor 6 determines the reaching of the end positions above or below.
  • the advantages of this realization of the end position sensors 12, 13 according to the invention in connection with a fully electronic control device 11 have been explained in the general part of the description. This may be referred to.
  • FIGS. 3 and 4 shows the example of a reed switch for detecting the revolutions of the roller 2.
  • two reed magnets 15 are arranged on the circumference of the roller 2, on the end face of which there is an opposing one the support body connected to the abutment 10 has a reed contact 16.
  • two pulses are generated per revolution of the roller 2. In many cases this is sufficient for the required measuring accuracy.
  • a larger number of impulses can be realized with a larger number of reed magnets 15 and thus also smaller distances can be determined.
  • a double evaluation reliability is obtained if one evaluates both pulse sequences, which have been explained above, in the control device 11. Then a relatively large amount of data has to be processed.
  • the dense pulse sequence of the end position sensor 13 is then used only in a small area immediately preceding or following the actual end position and switching off of the drive motor 6. This considerably reduces the amount of data to be processed by the control device 11.
  • a particular advantage of the primary electronic design of the end position sensors 12, 13 and the control device 11 lies in the fact that the desired rotational speeds or desired pulse numbers of the roller 2 corresponding to the end positions and electronically stored in the control device 11 and the drive shaft 7 are electronically adjustable.
  • an externally operated or automatically switching pulse generator is provided to adjust the stored target revolution numbers (target pulse numbers). If one ascertains during operation that the end positions at the top or bottom are no longer correctly reached in the darkening device according to the invention, the memory content of the control device 11 is simply adjusted again to the actual conditions by changing the programmed target number of revolutions (target pulse numbers). You can do this in a programming mode on the control unit provide, which is not shown here, but contains the manual on / off switch (at least this).
  • the control signals can be transmitted wirelessly, but also very simply via the supply lines of the electric drive motor 6.
  • the control device 11 can comprise a microprocessor, which can have, for example, a modern EEPROM as the storage medium.
  • This storage medium can receive the programmed data even in the event of a power failure, it can be deleted and rewritten and is therefore an excellent storage medium for the application. In particular, it allows the simple storage of required target data on a large scale.

Abstract

The invention relates to a darkening device with a roller shutter (1), a roller (2) for winding the roller shutter (1) up, an electric drive motor (6), which is preferably made in the form of a tubular motor and arranged in the inside of the roller (2), and a control device (11) for controlling the drive motor (6), the control device (11) being operable by various switches or sensors. The aim of the invention is to make a drive of the control device (11) of a darkening device of the type in question, which drive works electronically to as great an extent as possible, is easy to install and adjust and is economical. This aim is achieved according to the invention in that end position sensors are assigned to the roller (2) or to the drive motor (6) and detect electronically the rotations of the roller (2) or of the output shaft of the drive motor (6), and, from the detected rotations of the roller (2) or of the output shaft of the drive motor (6), the control device (11) determines the reaching of the end positions at the top or at the bottom. <IMAGE>

Description

Die Erfindung betrifft eine Verdunkelungsvorrichtung oder Sicherungsvorrichtung mit den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a blackout device or security device with the features of the preamble of claim 1.

Verdunkelungsvorrichtungen der in Rede stehenden Art arbeiten normalerweise mit einem Rolladen aus Kunststoff-Lamellen, in früherer Ausführungsform auch aus Holz-Lamellen, oder in leichterer Ausführung auch mit einem Rollo aus dünnen Kunststoff-Lamellen, die dann meist noch in ihrer Neigung verstellbar Sind. Die gleiche Technik ist auch bei nicht verdunkelnden Sicherungsvorrichtungen mit Rollgittern oder Lamellen-Rolltoren bekannt, so daß die Erfindung sich auf derartige Sicherungsvorrichtungen auch ohne Verdunkelungswirkung bezieht.Blackout devices of the type in question normally work with a roller shutter made of plastic slats, in the earlier embodiment also made of wood slats, or in a lighter version also with a roller blind made of thin plastic slats, the inclination of which is then usually adjustable. The same technique is also known in the case of non-darkening security devices with rolling grilles or lamellar roller shutters, so that the invention relates to security devices of this type even without a blackout effect.

Die GB - A - 2 189 906 offenbart eine Verdunkelungsvorrichtung, von der die Erfindung ausgeht, bei der zur Bestimmung der Position und der Geschwindigkeit sowie der Bewegungsrichtung der Verdunkelungsvorrichtung die von einem optoelektronischen Sensor erzeugten impulsförmigen Signale mit Hilfe einer Steuerung ausgewertet werden. Dabei wird der Lichtweg einer Lichtschranke von sich in Abhängigkeit von der Bewegung der Verdunkelungsvorrichtung drehenden Lamellen unterbrochen, die mit einer Antriebsvorrichtung für die Verdunkelungsvorrichtung gekoppelt sind. Bei Verwendung von zwei optoelektronischen Sensoren kann die Richtung der Bewegung der Verdunkelungsvorrichtung bestimmt werden. Die Steuerung dient u. a. auch der Bestimmung der Endposition im geöffneten wie auch im geschlossenen Zustand der Verdunkelungsvorrichtung.GB-A-2 189 906 discloses a darkening device from which the invention is based, in which the pulse-shaped signals generated by an optoelectronic sensor are evaluated with the aid of a controller in order to determine the position, the speed and the direction of movement of the darkening device. The light path of a light barrier is interrupted by slats rotating depending on the movement of the darkening device, which slats are coupled to a drive device for the darkening device. When using two optoelectronic sensors, the direction of movement of the darkening device can be determined. The control serves u. a. also determining the end position in the open as well as in the closed state of the darkening device.

Weiter ist aus der US - A - 4,529,920 eine Steuerungsvorrichtung für eine automatische Tür bekannt, bei der die momentane Position und Bewegungsrichtung der Tür aus der Bewegung eines Antriebsriemens ermittelt wird, der die Bewegung eines Motors auf die bewegliche Tür überträgt. Die Ermittlung der Position und der Bewegungsrichtung der Tür wird dabei mit Hilfe zweier Lichtschranken durchgeführt, wobei von an dem Antriebsriemen angeordneten Zähnen die Lichtwege der beiden Lichtschranken unterbrechbar sind.Furthermore, a control device for an automatic door is known from US Pat. No. 4,529,920, in which the current position and direction of movement of the door is determined from the movement of a drive belt which transmits the movement of a motor to the movable door. The determination of the position and the direction of movement of the door is carried out with the aid of two light barriers, the light paths of the two light barriers being interruptable by teeth arranged on the drive belt.

Bei einer Beschattungsanlage bzw. Markise ist es bekannt, Positionssensoren als von der Walze zum Aufwickeln eines Behangs bzw. des Markisenstoffes durch Impulse gesteuerte Inkrementalgeber auszuführen und letztlich aus den umfaßten Umdrehungen der Walze das Erreichen von Endstellungen des aufrollbaren Behanges bzw. des Markisenbezuges zu ermitteln (DE - A - 40 09 373).In a shading system or awning, it is known to design position sensors as incremental encoders controlled by the roller for winding up a curtain or the awning fabric, and ultimately to determine the end positions of the rollable curtain or the awning cover from the revolutions of the roller covered ( DE - A - 40 09 373).

Die drei genannten Verdunkelungsvorrichtungen weisen die Gemeinsamkeit auf, daß jeweils mit Hilfe eines Sensors aus der Umdrehungsposition des Antriebsmechanismus für eine bewegliche Verdunkelungsvorrichtung oder für eine bewegliche Tür das Erreichen der Endposition sowohl im geöffneten als auch im geschlossenen Zustand vorausbestimmbar sind. Als problematisch erweist es sich dabei, daß die für das Aufwickeln beispielsweise eines Rolladens verwendete Walze einen solch großen Durchmesser aufweist, daß die für die Bestimmung der Endposition erforderliche Genauigkeit eine Auflösung in der Bestimmung der Winkelposition erfordert, die nur einem Bruchteil einer gesamten Umdrehung der Walze entspricht. Da jedoch die dargestellten, aus dem Stand der Technik bekannten Meßvorrichtungen für die Bestimmung der Winkelposition der Walze eine derartige Auflösung in der Bestimmung der Winkelposition nicht erlauben, ist die Genauigkeit der Vorausbestimmung der Endposition im geöffneten wie auch im geschlossenen Zustand der Verdunkelungsvorrichtung im Stand der Technik zu gering.The three aforementioned darkening devices have in common that with the help of a sensor from the rotational position of the drive mechanism for a movable darkening device or for a movable door, the reaching of the end position can be predetermined both in the open and in the closed state. It proves to be problematic here that the roller used for winding, for example, a roller shutter has such a large diameter that the accuracy required for determining the end position requires a resolution in the determination of the angular position which is only a fraction of a total revolution of the roller corresponds. However, since the illustrated measuring devices known from the prior art for determining the angular position of the roller do not allow such a resolution in the determination of the angular position, the accuracy of the predetermination of the end position in the opened as well as in the closed state of the darkening device is in the prior art too low.

Schließlich offenbaren die DE - C - 33 04 962 und die darin genannte DE - A - 28 36 938 eine Verdunkelungsvorrichtung, die einen als Rohrmotor ausgeführten elektrischen Antriebsmotor und eine mit elektromechanischen Endschaltern arbeitende Steuerungseinrichtung für diesen Antriebsmotor aufweist. Alle installationstechnisch notwendigen Teile dieser Verdunkelungsvorrichtung befinden sich im Rolladenkasten. Der Rohrmotor wird über eine Fernsteuerung ferngesteuert. Die Endschalter arbeiten elektromechanisch mit Spindel und darauf laufender Spindelmutter, die einen Schalter betätigt, wenn der Rolladen die obere oder untere Endstellung erreicht hat. Das ist zweckmäßig, weil so die Endschalter in unmittelbarer Nähe der Steuerungseinrichtung für den elektrischen Antriebsmotor im Rolladenkasten angeordnet sind. Spezielle Anordnungen am Fensterrahmen müssen nicht realisiert werden. Die hier verwirklichten elektro-mechanischen Endstellungssensoren sind aber insoweit problematisch, als sie nur bei geöffnetem Rolladenkasten eingestellt werden können und die Einstellung auch relativ kompliziert ist. Das ist deswegen besonders problematisch, weil durch mechanische Veränderungen und Verschleiß die wirklichen Endstellungen des Rolladens selbst relativ schnell von den durch die Endschalter definierten Endstellungen abzuweichen beginnen.Finally, DE-C-33 04 962 and the DE-A-28 36 938 mentioned therein disclose a darkening device which has an electric drive motor designed as a tubular motor and a control device for this drive motor which works with electromechanical limit switches. All parts of this blackout device that are required in terms of installation technology are located in the roller shutter box. The tubular motor is remotely controlled via a remote control. The limit switches work electromechanically with a spindle and a spindle nut running on it, which actuates a switch when the roller shutter has reached the upper or lower end position. This is useful because the limit switches are in the immediate vicinity of the control device are arranged in the roller shutter box for the electric drive motor. Special arrangements on the window frame do not have to be realized. The electro-mechanical end position sensors implemented here are problematic insofar as they can only be set when the roller shutter box is open and the setting is also relatively complicated. This is particularly problematic because the actual end positions of the roller shutter itself begin to deviate relatively quickly from the end positions defined by the limit switches due to mechanical changes and wear.

Der Erfindung liegt die Aufgabe zugrunde, eine so weit wie möglich elektronisch arbeitende, einfach zu installierende und nachzustellende sowie preisgünstige Ansteuerung der Steuerungseinrichtung einer Vorrichtung der in Rede stehenden Art zu realisieren.The invention is based on the object of realizing, as far as possible, electronically operating, easy to install and readjust and inexpensive control of the control device of a device of the type in question.

Die zuvor aufgezeigte Aufgabe ist zunächst durch die Merkmale des kennzeichnenden Teils von Anspruch 1 gelöst. Die Endstellungssensoren sind der Walze bzw. dem Antriebsmotor zugeordnet, haben insoweit also den gleichen Vorteil wie die elektromechanischen Endschalter des Standes der Technik, allerdings ohne den zusätzlichen Aufwand von Spindel und Spindelmutter. Interessant ist dabei, daß praktisch vollständig mit elektronischen Mitteln gearbeitet werden kann. Dadurch ist es möglich, auch die Umdrehungen der Antriebswelle zusätzlich als Signale heranzuziehen, und zwar als Korrektursignale (Feinauflösung) in Verbindung mit den als Grobsignale dienenden Signalen, die von den Umdrehungen der Walze abgeleitet werden. Dadurch kann mit geringem elektronischem bzw. auswertungstechnischem Aufwand eine sehr hohe Genauigkeit in der Positionierung des Rolladens oder des Rollgitters erreicht werden. Da sich die Erfassung in der elektronischen Steuerungseinrichtung abspielt, können die vorgegebenen Sollwerte leicht geändert und die damit geänderten Verhältnisse der Mechanik durch Änderungen und Verschleiß angepaßt werden. Dazu muß man den Rolladenkasten nicht öffnen und auch keine mechanischen Einstellmaßnahmen durchführen, alles kann allein durch elektronische Mittel und damit schnell und genau erfolgen.The object presented above is first achieved by the features of the characterizing part of claim 1. The end position sensors are assigned to the roller or the drive motor and thus have the same advantage in this respect as the electromechanical limit switches of the prior art, but without the additional effort of the spindle and spindle nut. It is interesting that you can work almost entirely with electronic means. This makes it possible to additionally use the revolutions of the drive shaft as signals, specifically as correction signals (fine resolution) in conjunction with the signals serving as coarse signals which are derived from the revolutions of the roller. As a result, a very high level of accuracy in the positioning of the roller shutter or the roller grille can be achieved with little expenditure on electronics or evaluation technology. Since the detection takes place in the electronic control device, the predetermined target values can be changed slightly and the changed mechanical conditions can be adapted by changes and wear. You do not have to open the roller shutter box and do not carry out any mechanical adjustment measures, everything can be done quickly and precisely by electronic means alone.

Bevorzugte Ausgestaltungen und Weiterbildungen der zuvor beschriebenen Lehre sind den Ansprüchen 2 bis 7 beschrieben.Preferred refinements and developments of the teaching described above are described in claims 2 to 7.

Im folgenden wird die Erfindung anhand einer lediglich Ausführungsbeispiele darstellenden Zeichnung näher erläutert. In der Zeichnung zeigt

Fig. 1
rein mechanisch, in einer Übersichtdarstellung, eine Verdunkelungsvorrichtung gemäß der Erfindung,
Fig. 2
die Verdunkelungsvorrichtung aus Fig. 1 in einer Ansicht von der Innenseite eines entsprechenden Fensters her.
Fig. 3
in schematischer Darstellung die Walze zum Aufwickeln des Rolladens mit darin befindlichem Rohrmotor,
Fig. 4
in einem bevorzugten Ausführungsbeispiel und ausschnittsweise das in Fig. 3 links erkennbare Ende der Walze,
Fig. 5
einen Biegebalken als ein Ausführungsbeispiel zur Erfassung des Drehmomentes des Antriebsmotors,
Fig. 6
eine Schemadarstellung für einen Sensor zur Erfassung der Umdrehungen der Abtriebswelle des Antriebsmotors.
The invention is explained in more detail below with reference to a drawing that shows exemplary embodiments only. In the drawing shows
Fig. 1
purely mechanical, in an overview, a blackout device according to the invention,
Fig. 2
1 in a view from the inside of a corresponding window.
Fig. 3
a schematic representation of the roller for winding up the roller shutter with a tubular motor located therein,
Fig. 4
in a preferred exemplary embodiment and in sections the end of the roller which can be seen on the left in FIG. 3,
Fig. 5
a bending beam as an exemplary embodiment for detecting the torque of the drive motor,
Fig. 6
a schematic representation for a sensor for detecting the revolutions of the output shaft of the drive motor.

Wie Fig. 1 und 2 darstellen, besteht eine Verdunkelungsvorrichtung der in Rede stehenden Art in ihrem grundsätzlichen Aufbau aus einem Rolladen 1, einer Walze 2 zum Aufwickeln des Rolladens 1, wobei die Walze 2 normalerweise in einem Rolladenkasten 3 angeordnet ist, der seinerseits in der Außenwand 4 eines Gebäudes eingebaut ist, meist oberhalb eines Fensters 5. Wie eingangs schon erläutert worden ist, gelten entsprechende Überlegungen auch für eine Sicherungsvorrichtung mit einem keine Verdunkelung bewirkenden Rollgitter, einem Rolltor od. dgl..1 and 2, a darkening device of the type in question consists in its basic structure of a roller shutter 1, a roller 2 for winding the roller shutter 1, the roller 2 is normally arranged in a roller shutter box 3, which in turn in the Outer wall 4 of a building is installed, usually above a window 5. As has already been explained at the beginning, corresponding considerations also apply to a security device with a rolling grille which does not darken, a roller shutter door or the like.

Zum Aufwickeln des Rolladens 1 ist ein elektrischer Antriebsmotor 6 vorgesehen, der hier im Regelfall als Rohrmotor ausgeführt und im Inneren der Walze 2 angeordnet ist. Der Antriebsmotor 6 steht über eine Antriebswelle 7 und ein Getriebe 8 mit einem Mitnehmer 9 in Verbindung, der von innen her an die Walze 2 angekuppelt ist und das vom Antriebsmotor 6 erzeugte Drehmoment auf die Walze 2 überträgt (Fig. 3). Der Antriebsmotor 6 selbst ist ortsfest an der Außenwand 4 gelagert, die Außenwand 4 bildet also ein Widerlager 10, das das Gegenmoment vom Antriebsmotor 6 aufnimmt. Das Widerlager 10 ist hier konkret als Wandhalter an der Außenwand 4 ausgeführt (Fig. 3, 4).To wind up the roller shutter 1, an electric drive motor 6 is provided, which here is usually designed as a tubular motor and is arranged inside the roller 2. The drive motor 6 is connected via a drive shaft 7 and a gear 8 to a driver 9 which is coupled to the roller 2 from the inside and transmits the torque generated by the drive motor 6 to the roller 2 (FIG. 3). The drive motor 6 itself is mounted in a stationary manner on the outer wall 4, the outer wall 4 thus forms an abutment 10 which receives the counter torque from the drive motor 6. The abutment 10 is specifically designed as a wall bracket on the outer wall 4 (Fig. 3, 4).

Selbstverständlich muß der elektrische Antriebsmotor 6 gesteuert werden. Dazu dient eine in Fig. 1 nur schematisch angedeutete Steuerungseinrichtung 11. Diese wird durch verschiedene Schalter bzw. Sensoren gesteuert bzw. betätigt. Nicht dargestellt ist dabei, daß dazu zunächst ein Hand-Ein- und AusSchalter bzw. ein entsprechender Automatikschalter, beispielsweise für eine Zeitsteuerung, gehört. Das entspricht jedenfalls üblicher Ausstattung wie im Stand der Technik beschrieben. Zu diesen Schaltern und Sensoren gehören aber auch Endstellungssensoren 12, 13 für die obere und untere Endstellung des Rolladens 1.Of course, the electric drive motor 6 must be controlled. A control device 11, which is only schematically indicated in FIG. 1, is used for this purpose. This is controlled or actuated by various switches or sensors. It is not shown that this initially includes a manual on / off switch or a corresponding automatic switch, for example for a time control. In any case, this corresponds to the usual equipment as described in the prior art. However, these switches and sensors also include end position sensors 12, 13 for the upper and lower end positions of the roller shutter 1.

Vorgesehen ist, daß die Endstellungssensoren 12, 13 der Walze 2 und dem Antriebsmotor 6 zugeordnet sind und die Umdrehungen der Walze 2 und der Antriebswelle 7 des Antriebsmotors 6 elektronisch erfassen und daß die Steuerungseinrichtungen 11 aus den erfaßten Umdrehungen der Walze 2 und der Antriebswelle 7 des Antriebsmotors 6 das Erreichen der Endstellungen oben bzw. unten ermittelt. Die Vorzüge dieser erfindungsgemäßen Realisierung der Endstellungssensoren 12, 13 in Verbindung mit einer vollelektronischen Steuerungseinrichtung 11 sind im allgemeinen Teil der Beschreibung erläutert worden. Darauf darf verwiesen werden.It is provided that the end position sensors 12, 13 are assigned to the roller 2 and the drive motor 6 and electronically detect the revolutions of the roller 2 and the drive shaft 7 of the drive motor 6 and that the control devices 11 from the detected revolutions of the roller 2 and the drive shaft 7 of the Drive motor 6 determines the reaching of the end positions above or below. The advantages of this realization of the end position sensors 12, 13 according to the invention in connection with a fully electronic control device 11 have been explained in the general part of the description. This may be referred to.

Aus dem Stand der Technik sind vielerlei Möglichkeiten bekannt, Umdrehungen einer Walze oder einer Welle meßtechnisch zu erfassen. Drehgeber, Winkelkodierer etc. sind handelsüblich erhältlich. Zweckmäßig ist es in diesem Fall, die Ausgangssignale der Endstellungssensoren 12, 13 zu digitalisieren, damit werden die Endstellungssensoren 12, 13 also als Impulsgeber ausgeführt. In der Steuerungseinrichtung 11 wird dann die Anzahl der empfangenen Impulse ermittelt und mit der den Endstellungen entsprechenden gespeicherten Soll-Impulszahlen verglichen. Besonders zweckmäßig ist es dabei, die Impulsgeber berührungslos betätigbar auszuführen, beispielweise als Reed-Schalter (Reed-Magnet mit beim Durchlaufen des Magnetfeldes geschaltetem Reed-Kontakt), als induktiv oder kapazitiv beeinflußbarer Näherungsschalter oder auch als optischer Schalter (Lichtschranke oder Reflektor-Lichtschranke).Various possibilities are known from the prior art for measuring revolutions of a roller or a shaft by measurement. Encoders, encoders etc. are commercially available. In this case, it is expedient to digitize the output signals of the end position sensors 12, 13, so that the end position sensors 12, 13 are thus designed as pulse generators. The number of pulses received is then determined in the control device 11 and compared with the stored target pulse numbers corresponding to the end positions. It is particularly expedient to design the pulse generators to be contactlessly operable, for example as a reed switch (reed magnet with a reed contact switched when the magnetic field passes through it), as an inductive or capacitive proximity switch or as an optical switch (light barrier or reflector light barrier) .

Das in Fig. 3 und 4 dargestellte Ausführungsbeispiel zeigt das Beispiel eines Reed-Schalters für die Erfassung der Umdrehungen der Walze 2. Hier sind auf dem Umfang der Walze 2 verteilt an deren Stirnseite zwei Reed-Magneten 15 angeordnet, denen gegenüber steht an einem mit dem Widerlager 10 verbundenen Trägerkörper ein Reed-Kontakt 16. Dadurch werden je Umdrehung der Walze 2 zwei Impulse erzeugt. Das reicht für die erforderliche Meßgenauigkeit in vielen Fällen aus. Man kann eine größere Impulszahl mit einer größeren Anzahl von Reed-Magenten 15 realisieren und damit auch kleinere Wegstrecken ermitteln.The exemplary embodiment shown in FIGS. 3 and 4 shows the example of a reed switch for detecting the revolutions of the roller 2. Here two reed magnets 15 are arranged on the circumference of the roller 2, on the end face of which there is an opposing one the support body connected to the abutment 10 has a reed contact 16. As a result, two pulses are generated per revolution of the roller 2. In many cases this is sufficient for the required measuring accuracy. A larger number of impulses can be realized with a larger number of reed magnets 15 and thus also smaller distances can be determined.

Fig. 6 zeigt die Ermittlung der Umdrehungen der Antriebswelle 7 mit einer Lichtschranke 17, in deren Bereich die Antriebswelle 7 einseitig abgeschliffen ist. Hier wird also je Umdrehung der Antriebswelle 7 des Antriebsmotors 6 ein Impuls erzeugt. Wegen der gegenüber der Drehzahl der Walze 2 vielfach höheren Drehzahl der Antriebswelle 7 des Antriebsmotors 6 ist die von der Lichtschranke 17 als Endstellungssensor 13 erzeugte Impulsfolge sehr viel dichter als die vom Reed-Schalter 15, 16 des Endstellungssensors 12 erzeugte Impulsfolge. Man kann nun beide Impulsfolgen gemeinsam schaltungstechnisch nutzen und zwar so, daß die von den Umdrehungen der Walze 2 abgeleiteten Signale (Impulse) als Grobsignale und die von den Umdrehungen der Antriebswelle 7 abgeleiteten Signale (Impulse) als Korrektursignale (Feinauflösung) ausgewertet werden. Das schafft die gewünschte hohe Positioniergenauigkeit mit geringem steuerungstechnischem Aufwand.6 shows the determination of the revolutions of the drive shaft 7 with a light barrier 17, in the area of which the drive shaft 7 is ground on one side. A pulse is generated here per revolution of the drive shaft 7 of the drive motor 6. Because of the speed of the drive shaft 7 of the drive motor 6, which is much higher than the speed of the roller 2, the pulse train generated by the light barrier 17 as the end position sensor 13 is much denser than the pulse train generated by the reed switch 15, 16 of the end position sensor 12. Both pulse sequences can now be used together in terms of circuitry, in such a way that the signals (pulses) derived from the revolutions of the roller 2 as coarse signals and the signals (pulses) derived from the revolutions of the drive shaft 7 as correction signals (fine resolution) be evaluated. This creates the desired high positioning accuracy with little control effort.

Eine doppelte Auswertungssicherheit gewinnt man dann, wenn man beide Impulsfolgen, die zuvor erläutert worden sind, in der Steuerungseinrichtung 11 auswertet. Dann ist aber eine relativ große Datenmenge zu verarbeiten. Man kann nun von der unterschiedlichen Genauigkeit der Impulsfolgen der beiden Endstellungssensoren 12, 13 ausgehen und eine stufenweise Auswertung in der Steuerungseinrichtung 11 wählen, nämlich dadurch, daß die von den Umdrehungen der Antriebswelle 7 abgeleiteten Signale (Impulse) von der Steuerungseinrichtung 11 erst dann erfaßt und ausgewertet werden, wenn die Anzahl der von den Umdrehungen der Walze 2 abgeleiteten Signale (Impulse) mit der vorgegebenen Soll-Impulszahl übereinstimmt und/oder nur erfaßt und ausgewertet werden, bis die Anzahl der von den Umdrehungen der Walze 2 abgeleiteten Signale (Impulse) mit der Soll-Impulszahl nicht mehr übereinstimmt. Damit nutzt man dann die dichte Impulsfolge des Endstellungssensors 13 nur in einem kleinen, der eigentlichen Endstellung und Abschaltung des Antriebsmotors 6 unmittelbar vorausgehenden bzw. folgenden Bereich. Das verringert die von der Steuerungseinrichtung 11 zu verarbeitende Datenmenge ganz erheblich.A double evaluation reliability is obtained if one evaluates both pulse sequences, which have been explained above, in the control device 11. Then a relatively large amount of data has to be processed. One can now start from the different accuracy of the pulse sequences of the two end position sensors 12, 13 and select a step-by-step evaluation in the control device 11, namely in that the signals (pulses) derived from the revolutions of the drive shaft 7 are only detected by the control device 11 and are evaluated if the number of signals (pulses) derived from the revolutions of the roller 2 matches the predetermined target number of pulses and / or are only detected and evaluated until the number of signals (pulses) derived from the revolutions of the roller 2 also the target pulse number no longer matches. The dense pulse sequence of the end position sensor 13 is then used only in a small area immediately preceding or following the actual end position and switching off of the drive motor 6. This considerably reduces the amount of data to be processed by the control device 11.

Weiter oben ist schon erläutert worden, daß ein besonderer Vorteil der primär elektronischen Gestaltung der Endstellungssensoren 12, 13 und der Steuerungseinrichtung 11 darin liegt, daß die den Endstellungen entsprechenden, in der Steuerungseinrichtung 11 elektronisch gespeicherten Soll-Umdrehungszahlen bzw. Soll-Impulszahlen der Walze 2 und der Antriebswelle 7 elektronisch verstellbar sind. Hierzu empfiehlt es sich, daß zur Verstellung der gespeicherten Soll-Umdrehungszahlen (Soll-Impulszahlen) ein extern bedienbarer oder automatisch schaltender Impulsgeber vorgesehen ist. Stellt man im Betrieb also fest, daß bei der erfindungsgemäßen Verdunkelungsvorrichtung die Endstellungen oben oder unten nicht mehr richtig erreicht werden, paßt man durch Veränderung der programmierten Soll-Umdrehungszahlen (Soll-Impulszahlen) den Speicherinhalt der Steuerungseinrichtung 11 einfach wieder an die tatsächlichen Verhältnisse an. Man kann dazu einen Programmiermodus an der Steuereinheit vorsehen, die hier nicht dargestellt ist, jedoch den Hand-Ein- und Aus-Schalter (zumindest diesen) enthält. Die Steuersignale können drahtlos übermittelt werden, aber auch sehr einfach über die Versorgungsleitungen des elektrischen Antriebsmotors 6.It has already been explained above that a particular advantage of the primary electronic design of the end position sensors 12, 13 and the control device 11 lies in the fact that the desired rotational speeds or desired pulse numbers of the roller 2 corresponding to the end positions and electronically stored in the control device 11 and the drive shaft 7 are electronically adjustable. For this purpose, it is recommended that an externally operated or automatically switching pulse generator is provided to adjust the stored target revolution numbers (target pulse numbers). If one ascertains during operation that the end positions at the top or bottom are no longer correctly reached in the darkening device according to the invention, the memory content of the control device 11 is simply adjusted again to the actual conditions by changing the programmed target number of revolutions (target pulse numbers). You can do this in a programming mode on the control unit provide, which is not shown here, but contains the manual on / off switch (at least this). The control signals can be transmitted wirelessly, but also very simply via the supply lines of the electric drive motor 6.

Als Endstellungssensoren 12, 13 haben sich in einem verschmutzungsunempfindlichen Bereich, also im Bereich der Walze 2, Reed-Schalter sehr bewährt. Hohe Lebensdauer, verschmutzungsunempfindlich und preiswert stellen sie eine zweckmäßige Lösung dar. Dort, wo weniger Verschmutzungsgefahr besteht, also hier im Bereich der Antriebswelle 7 des Antriebsmotors 6, ist im Ausführungsbeispiel, wie oben schon erläutert, eine optische Ermittlung der Umdrehungen vorgesehen. Die Steuerungseinrichtung 11 kann in einem bevorzugten Ausführungsbeispiel einen Mikroprozessor umfassen, der als Speichermedium beispielsweise in modernes EEPROM aufweisen kann. Dieses Speichermedium kann auch bei Spannungsausfall die programmierten Daten erhalten, es kann gelöscht und wieder neu beschrieben werden und ist damit ein für den Anwendungsfall vorzügliches Speichermedium. Insbesondere erlaubt es die einfache Abspeicherung erforderlicher Soll-Daten in großem Umfange.Reed switches have proven to be very effective as end position sensors 12, 13 in a dirt-insensitive area, that is to say in the area of the roller 2. Long service life, insensitive to dirt and inexpensive, they represent a practical solution. Where there is less risk of contamination, that is to say here in the area of the drive shaft 7 of the drive motor 6, in the exemplary embodiment, as already explained above, an optical determination of the revolutions is provided. In a preferred exemplary embodiment, the control device 11 can comprise a microprocessor, which can have, for example, a modern EEPROM as the storage medium. This storage medium can receive the programmed data even in the event of a power failure, it can be deleted and rewritten and is therefore an excellent storage medium for the application. In particular, it allows the simple storage of required target data on a large scale.

Claims (7)

  1. A darkening device or security device having a roller shutter (1) or roller screen, having a roller shutter housing (3), having a roller (2), having an electric drive motor (6), having a controller (11) which controls the electric drive motor (6), and having switches and end position sensors (12, 13), wherein the roller (2) is disposed in the roller shutter housing (3) and serves for rolling up the roller shutter (1) or the roller screen, for which purpose the drive motor (6) is preferably designed as a tubular motor and is disposed inside the roller (2), wherein the switches can be operated manually or by automatic action and serve for switching on and switching off, wherein end position sensors (12, 13) are present for detecting end positions of the roller shutter (1) or of the roller screen, and wherein one end position sensor (12) is associated with the roller (2) and measures the number of revolutions of the roller (2) electronically, characterised in that a second end position sensor (13) is associated with the drive motor (6) and measures the number of revolutions of the drive shaft (7) of the drive motor (6) electronically, that the controller (11) determines when the upper and lower end positions of the roller shutter (1) or roller screen are reached from the measured revolutions of the roller (2) and of the drive shaft (7) of the drive motor (6), and that the signals derived from the revolutions of the roller (2) are thereby evaluated as coarse signals and the signals derived from the revolutions of the drive shaft (7) are thereby evaluated as correction signals for fine resolution.
  2. A device according to claim 1, characterised in that the end position sensors (12, 13) are designed as pulse generators, and the numbers of pulses received are determined and compared in the controller (11) with stored set numbers of pulses corresponding to the end positions.
  3. Devices according to claim 2, characterised in that the pulse generators forming the end position sensors (12, 13) can be actuated without contact, and for this purpose the pulse generators are designed as reed switches, inductive or capacitive proximity switches or optical switching elements.
  4. A device according to any one of claims 1 to 3, characterised in that from one to ten pulses, preferably two pulses, are generated for each revolution of the roller (2) and/or that one pulse is generated for each revolution of the drive shaft (7) of the drive motor (6).
  5. A device according to any one of claims 1 to 4, characterised in that the pulses derived from the revolutions of the drive shaft (7) are not determined and evaluated by the controller (11) until the number of pulses derived from the revolutions of the roller (2) agrees with the predetermined set number of pulses and/or are only determined and evaluated until the number of pulses derived from the revolutions of the roller (2) no longer agrees with the set number of pulses.
  6. A device according to any one of claims 1 to 5, characterised in that the set numbers of revolutions and/or set numbers of pulses of the roller (2) and/or of the drive shaft (7) which are stored in the controller (11) are electronically adjustable.
  7. A device according to claim 6, characterised in that an externally operable or automatically switching pulse generator is provided for adjusting the stored set number of revolutions, and/or the set number of pulses.
EP92121127A 1992-01-22 1992-12-11 Safety device for roller shutters and similar closures Expired - Lifetime EP0552459B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4201971A DE4201971A1 (en) 1992-01-22 1992-01-22 DARKENING DEVICE
DE4201971 1992-01-22

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EP0552459A1 EP0552459A1 (en) 1993-07-28
EP0552459B1 true EP0552459B1 (en) 1995-06-28

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ATE124495T1 (en) 1995-07-15
EP0552459A1 (en) 1993-07-28
DE59202727D1 (en) 1995-08-03

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