EP0503161A2 - Roller with slip-clutch - Google Patents

Roller with slip-clutch Download PDF

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Publication number
EP0503161A2
EP0503161A2 EP91122350A EP91122350A EP0503161A2 EP 0503161 A2 EP0503161 A2 EP 0503161A2 EP 91122350 A EP91122350 A EP 91122350A EP 91122350 A EP91122350 A EP 91122350A EP 0503161 A2 EP0503161 A2 EP 0503161A2
Authority
EP
European Patent Office
Prior art keywords
roller shutter
shutter according
spring
ring gear
designed
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.)
Granted
Application number
EP91122350A
Other languages
German (de)
French (fr)
Other versions
EP0503161A3 (en
EP0503161B1 (en
Inventor
Ulrik Ulriksen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VKR Holding AS
Velux Industri AS
Original Assignee
VKR Holding AS
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Filing date
Publication date
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Publication of EP0503161A2 publication Critical patent/EP0503161A2/en
Publication of EP0503161A3 publication Critical patent/EP0503161A3/en
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Publication of EP0503161B1 publication Critical patent/EP0503161B1/en
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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
    • 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
    • E06B9/70—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned outside the roller
    • 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
    • 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
    • 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
    • E06B9/92—Means allowing the closures to be shifted out of the plane of the opening

Definitions

  • the invention relates to a roller shutter, in particular for skylights, with a winding shaft preferably arranged at the top, which is designed to be driven by a motor via a slip clutch.
  • Window shutters are increasingly driven by a motor to enable remote control or automatic control of the opening and closing process.
  • automatic closing of the roller shutters controlled by suitable sensors is often necessary in order to prevent the interior from being excessively heated when exposed to sunlight.
  • the electric drives are arranged on the winding shaft, which is usually arranged at the top.
  • roller shutter drives for slipping clutches. This protects the electric motor from overloads that occur, for example, when the shutter slats are frozen in the closed state.
  • the drive cannot be disengaged by a slip clutch when the roller shutter is closed. If the roller shutter bars become jammed or blocked when the roller shutter is closed, the electric motor can be overloaded or damage to the roller shutter or roller shutter drive can be caused.
  • the object of the invention is to provide an overload protection for roller shutter drives, which are located in the roller shutter box when the roller shutter is closed Shutter bars protect.
  • the slip clutch has release moments which are designed differently for both directions of rotation. It can thus be taken into account that the drive torques required to close or open the roller shutter are different.
  • the roller shutter is closed, the rotational movement of the winding shaft is supported by the weight of the unwound roller shutter slats.
  • the slipping clutch consists of two partial clutches, each part only having a release torque in one direction of rotation and the coupled parts being designed to be non-rotatably connected in the opposite direction. This enables the release torque for each direction of rotation to be set independently of one another to adjust. Adaptation to different installation conditions, for example different roof pitches, can be carried out easily and quickly on the two partial couplings.
  • the slip clutch is arranged within the winding shaft, preferably in connection with a raw motor, an advantageously small-sized roller shutter results.
  • the roller shutter box can be made extremely slim.
  • roller shutter it is provided that several, in particular four, spring tongues are arranged engaging in the teeth of the gear wheel. This further improves the functional reliability of the slip clutch. Furthermore, a compensation of the radial forces acting between the spring tongue and the rest wheel is achieved, so that decentration does not occur.
  • the spring tongue is inexpensively designed as a sheet metal strip.
  • a molded sliding profile supports the function as a bending or buckling bar.
  • Spring tongues arranged symmetrically to one another compensate for the radial forces generated by the spring tongues.
  • the desired release moments can be generated by spring tongues from sheet metal strips of different thicknesses.
  • the free bending length of the spring tongues corresponds approximately to 0.7 times the radius of the pitch circle of the ring gear, mutual interference between the spring tongues is avoided in the event of buckling and bending loads, and at the same time sufficient flexibility of the spring tongues is ensured.
  • the spring tongue has a tangential direction to an intended concentric circle around the spring element with a radius of about 0.7 times the pitch circle, the spring tongue is held in a pretensioned position from which it is only slightly compressed when subjected to buckling until the spring tongue partially abuts the internal toothing of the ring gear and a rotationally fixed connection is established.
  • the spring tongue has a clamping point which is approximately on an imaginary semicircle above the pitch circle radius of the Ring gear is arranged at the point of engagement of the spring tongue in the toothing of the ring gear.
  • the clamping point of the spring tongue is thus aligned with respect to the point of engagement of the free spring tongue end in such a way that a non-positive connection with a particularly high holding torque is created when the spring tongue is loaded.
  • FIG. 1 shows a winding shaft 2 which is arranged on an end cover 1 of a roller shutter box and can be driven by a tubular motor 3 fastened to the end cover 1 by screws 4.
  • the first spring element 6 On a motor shaft 5, a first spring element 6 shown in Figures 2 and 3 is rotatably connected.
  • the first spring element 6 has a plate-shaped base body 7 and thereon a spring tongue 9 held in the holder 8.
  • the first spring element 6 is arranged centrally in a first ring gear 11 of a transmission element 10. Depending on the direction of rotation of the motor shaft 5, the spring tongues 9 engage in an internal toothing 12 of the first ring gear 11 in a rotationally fixed manner or in a load-dependent manner when a predetermined release torque is exceeded.
  • the transmission element 10 is freely rotatable in a bore 13 on the motor shaft 5.
  • the transmission element 10 consists of the first ring gear 11 and a second spring element 14 with holders 15 and spring tongues 16 held therein, as shown in FIGS. 4, 5 and 6.
  • the spring tongues 16 are oriented opposite to the spring tongues 9 of the first spring element 6.
  • the second spring element 14 is in turn arranged concentrically in a second ring gear 17 shown in FIGS. 7 and 8.
  • the second ring gear 17 has an internal toothing 18 and a nose 21 formed on the outer circumference.
  • the second ring gear 17 is in a concentric bore 19 on the motor shaft 5 mounted non-rotatably, a nut 20 screwed onto the outer end of the motor shaft 5 holding the partial couplings together.
  • the two spring elements 6, 14 each have four spring tongues 9, 16 distributed symmetrically in the holders 8, 15.
  • the spring tongues 9, 16 are fastened to the holders 8, 15 at clamping points 23.
  • the spring tongues 9, 16 consist of 0.2-0.5 mm thick steel sheet strips, at the ends of which a semi-arc-shaped slide-on profile 24 is formed. This slide-on profile 24 engages in the internal toothing 12, 18 of the associated ring gears 11, 17.
  • the rotational movement transmitted to the transmission element 10 is transmitted to the second ring gear 17 by means of a second spring element 14.
  • the spring tongues 16 of the second spring element 14 engage in the internal toothing 18 of the second ring gear 17.
  • the spring tongues 16, which are oriented opposite to the spring tongues 9 of the first spring element 6, thus also effect a load-dependent coupling of the second direction of rotation, wherein different release moments can be preselected by different design of the spring tongues 9 or 16.
  • the rotational movement of the second ring gear 17 is transmitted via the nose 21, which engages in a groove 22 in the winding shaft 2, to the winding shaft 2 in the roller shutter box. The winding shaft 2 rolls up and down the roller shutters.
  • the coupling can also be provided particularly advantageously manually, for example by means of a crank, moving roller shutters. This prevents damage caused by incorrect operation.

Abstract

The invention relates to a roller shutter, in particular for roof windows, with a winding shaft which is preferably arranged at the top and is designed to be driven by a motor via a slip-clutch, the slip-clutch being designed to act in both directions of rotation. <IMAGE>

Description

Die Erfindung betrifft einen Rolladen, insbesondere für Dachfenster, mit einer vorzugsweise oben angeordneten Wickelwelle, die von einem Motor über eine Rutschkupplung angetrieben ausgebildet ist.The invention relates to a roller shutter, in particular for skylights, with a winding shaft preferably arranged at the top, which is designed to be driven by a motor via a slip clutch.

Fensterrolladen werden zunehmend motorisch angetrieben, um eine Fernbedienung oder automatische Steuerung des Öffnungs- und des Schließvorgangs zu ermöglichen. Besonders bei Dachfenstern ist häufig ein über geeignete Sensoren gesteuertes automatisches Schließen der Rolladen nötig, um ein übermäßiges Erwärmen des Innenraumes bei Sonneneinstrahlung zu verhindern. Die elektrischen Antriebe werden an der meist oben angeordneten Wickelwelle angeordnet.Window shutters are increasingly driven by a motor to enable remote control or automatic control of the opening and closing process. In the case of roof windows in particular, automatic closing of the roller shutters controlled by suitable sensors is often necessary in order to prevent the interior from being excessively heated when exposed to sunlight. The electric drives are arranged on the winding shaft, which is usually arranged at the top.

Seit einigen Jahren ist es bekannt, Rolladenantriebe für das Aufwickeln mit Rutschkupplungen auszustatten. Damit wird der elektrische Motor vor Überlastungen geschützt, die beispielsweise bei in geschlossenem Zustand eingefrorenen Rolladenstäben auftreten.For several years it has been known to equip roller shutter drives for slipping clutches. This protects the electric motor from overloads that occur, for example, when the shutter slats are frozen in the closed state.

Es ist jedoch nachteilig, daß der Antrieb beim Schließen des Rolladens nicht durch eine Rutschkupplung auskuppelbar ist. Bei Verklemmen oder Blockieren der Rolladenstäbe beim Schließen des Rolladens kann folglich der elektrische Motor überlastet werden oder Beschädigungen am Rolladen oder Rolladenantrieb verursacht werden.However, it is disadvantageous that the drive cannot be disengaged by a slip clutch when the roller shutter is closed. If the roller shutter bars become jammed or blocked when the roller shutter is closed, the electric motor can be overloaded or damage to the roller shutter or roller shutter drive can be caused.

Aufgabe der Erfindung ist es, einen Überlastschutz für Rolladenantriebe anzugeben, der beim Schließen des Rolladens die im Rolladenkasten befindlichen Rolladenstäbe schützt.The object of the invention is to provide an overload protection for roller shutter drives, which are located in the roller shutter box when the roller shutter is closed Shutter bars protect.

Die mit der im Hauptanspruch angegebenen Erfindung erzielten Vorteile bestehen insbesondere darin, daß bei einer in beiden Drehrichtungen wirkenden Rutschkupplung eine übermäßige Stauchung und eventuelle Zerstörung der Rolladenlamellen vermieden wird. Sind beispielsweise die Führungsschienen des Rolladens vereist, wird bei Schließen des Rolladens bei einem vorgegebenen Auslösemoment die Drehverbindung zwischen Motor und Wickelwelle gelöst. Die Rolladenlamellen werden keiner übermäßigen Belastung ausgesetzt. Ferner ist der Antriebsmotor vor Überlastung geschützt. Ein Stehenbleiben des Motors unter Last und eine damit zusammenhängende Zerstörung des Motors wird sicher vermieden.The advantages achieved with the invention specified in the main claim consist in particular in that an excessive compression and possible destruction of the roller shutter slats is avoided with a slip clutch acting in both directions of rotation. If, for example, the roller shutter guide rails are iced up, the rotary connection between the motor and the winding shaft is released when the roller shutter closes at a predetermined triggering torque. The roller shutter slats are not exposed to excessive stress. The drive motor is also protected against overload. Stopping the engine under load and the associated destruction of the engine is safely avoided.

In Ausgestaltung des Rolladens ist vorgesehen, daß die Rutschkupplung Freigabemomente aufweist, die für beide Drehrichtungen unterschiedlich ausgebildet sind. Damit läßt sich berücksichtigen, daß die zum Schließen bzw. Öffnen des Rolladen benötigten Antriebsmomente unterschiedlich sind. Beim Schließen des Rolladens wird die Drehbewegung der Wickelwelle durch die Gewichtskraft der abgewickelten Rolladenlamellen unterstützt.In an embodiment of the roller shutter, it is provided that the slip clutch has release moments which are designed differently for both directions of rotation. It can thus be taken into account that the drive torques required to close or open the roller shutter are different. When the roller shutter is closed, the rotational movement of the winding shaft is supported by the weight of the unwound roller shutter slats.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die Rutschkupplung aus zwei Teilkupplungen besteht, wobei jeder Teil nur in einer Drehrichtung einen Freigabemoment aufweist und in der Gegenrichtung die gekuppelten Teile drehfest verbindend ausgebildet sind. Damit läßt sich das Freigabemoment für jede Drehrichtung unabhängig voneinander individuell einstellen. Eine Anpassung an verschiedene Einbaubedingungen, beispielsweise unterschiedliche Dachneigungen, läßt sich einfach und schnell an den beiden Teilkupplungen durchführen.In a further embodiment of the invention it is provided that the slipping clutch consists of two partial clutches, each part only having a release torque in one direction of rotation and the coupled parts being designed to be non-rotatably connected in the opposite direction. This enables the release torque for each direction of rotation to be set independently of one another to adjust. Adaptation to different installation conditions, for example different roof pitches, can be carried out easily and quickly on the two partial couplings.

Wird die Rutschkupplung innerhalb der Wickelwelle, vorzugsweise in Verbindung mit einem Rohmotor, angeordnet, ergibt sich ein vorteilhaft kleinbauender Rolladen. Insbesondere kann der Rolladenkasten äußerst schlank ausgeführt werden.If the slip clutch is arranged within the winding shaft, preferably in connection with a raw motor, an advantageously small-sized roller shutter results. In particular, the roller shutter box can be made extremely slim.

Mit der Ausgestaltung nach Anspruch 5 ist eine einfach aufgebaute aber wirkungsvoll arbeitende Rutschkupplung angegeben. Durch Austausch der Federzunge oder durch Veränderung der Vorspannung der Federzunge können unterschiedliche, den Gegebenheiten angepaßte Freigabemomente der Rutschkupplung gewählt werden.With the configuration according to claim 5, a simply constructed but effectively working slip clutch is specified. By changing the spring tongue or by changing the pretension of the spring tongue, different release torques of the slip clutch can be selected which are adapted to the circumstances.

In weiterer Ausgestaltung des Rolladens ist vorgesehen, daß mehrere, insbesondere vier, Federzungen in die Zähne des Zahnrades eingreifend angeordnet sind. Damit wird die Funktionssicherheit der Rutschkupplung weiter verbessert. Ferner wird ein Ausgleich der zwischen Federzunge und Ruherad wirkenden radialen Kräfte erreicht, so daß eine Dezentrierung nicht auftritt.In a further embodiment of the roller shutter it is provided that several, in particular four, spring tongues are arranged engaging in the teeth of the gear wheel. This further improves the functional reliability of the slip clutch. Furthermore, a compensation of the radial forces acting between the spring tongue and the rest wheel is achieved, so that decentration does not occur.

Mit der Ausgestaltung nach Anspruch 7 wird eine vorteilhafte Standardisierung der Bauteile erreicht. Dies führt zu günstigen Herstellungskosten und verringert die Wartungskosten.With the embodiment according to claim 7, an advantageous standardization of the components is achieved. This leads to low manufacturing costs and reduces maintenance costs.

Vorteilhafte Ausgestaltungen der Federzungen werden in den Unteransprüchen 8 bis 13 angegeben.Advantageous configurations of the spring tongues are specified in subclaims 8 to 13.

Kostengünstig wird die Federzunge als Blechstreifen ausgebildet. Ein eingeformtes Aufgleitprofil stützt die Funktion als Biege- bzw. Knickstab. Symmetrisch zueinander angeordnete Federzungen gleichen die durch die Federzungen entstehenden radialen Kräfte aus. Die gewünschten Freigabemomente können durch Federzungen aus unterschiedlich dicken Blechstreifen erzeugt werden.The spring tongue is inexpensively designed as a sheet metal strip. A molded sliding profile supports the function as a bending or buckling bar. Spring tongues arranged symmetrically to one another compensate for the radial forces generated by the spring tongues. The desired release moments can be generated by spring tongues from sheet metal strips of different thicknesses.

Mit den in den Unteransprüchen 11 bis 13 beschriebenen Abmessungen und Anordnungen der Federzunge läßt sich die Betriebssicherheit der Rutschkupplung weiter verbessern.With the dimensions and arrangements of the spring tongue described in subclaims 11 to 13, the operational safety of the slip clutch can be further improved.

Entspricht die freie Biegelänge der Federzungen etwa dem 0,7-fachen Teilkreisradius des Hohlrades, wird bei Knick- und Biegebelastung eine gegenseitige Behinderung der Federzungen vermieden und gleichzeitig eine ausreichende Beweglichkeit der Federzungen gewährleistet.If the free bending length of the spring tongues corresponds approximately to 0.7 times the radius of the pitch circle of the ring gear, mutual interference between the spring tongues is avoided in the event of buckling and bending loads, and at the same time sufficient flexibility of the spring tongues is ensured.

Dadurch, daß die Federzunge eine tangentiale Richtung zu einem um das Federelement gedachten konzentrischen Kreis mit einem Radius von etwa dem 0,7-fachen des Teilkreises aufweist, wird die Federzunge in einer vorgespannten Stellung gehalten, aus der heraus sie bei Knickbelastung nur geringfügig gestaucht wird, bis die Federzunge teilweise an der Innenverzahnung des Hohlrades anliegt und eine drehfeste Verbindung hergestellt ist.Characterized in that the spring tongue has a tangential direction to an intended concentric circle around the spring element with a radius of about 0.7 times the pitch circle, the spring tongue is held in a pretensioned position from which it is only slightly compressed when subjected to buckling until the spring tongue partially abuts the internal toothing of the ring gear and a rotationally fixed connection is established.

In weiterer Ausgestaltung ist vorgesehen, daß die Federzunge eine Einspannstelle aufweist, die etwa auf einem gedachten Halbkreis über dem Teilkreisradius des Hohlrades am Eingriffsort der Federzunge in die Verzahnung des Hohlrades angeordnet ist. Damit wird die Einspannstelle der Federzunge in Bezug zum Eingriffsort des freien Federzungenendes so ausgerichtet, daß bei Knickbelastung der Federzunge eine kraftschlüssige Verbindung mit einem besonders hohen Haltemoment entsteht.In a further embodiment it is provided that the spring tongue has a clamping point which is approximately on an imaginary semicircle above the pitch circle radius of the Ring gear is arranged at the point of engagement of the spring tongue in the toothing of the ring gear. The clamping point of the spring tongue is thus aligned with respect to the point of engagement of the free spring tongue end in such a way that a non-positive connection with a particularly high holding torque is created when the spring tongue is loaded.

Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung beschrieben. Es zeigen:

Figur 1
einen Teil eines Längsschnitts einer Wickelwelle eines erfindungsgemäßen Rolladens,
Figur 2
eine Seitenansicht eines ersten Federelements,
Figur 3
eine Draufsicht des in Figur 2 dargestellten Federelements,
Figur 4
einen Längsschnitt eines Übertragungselements mit einem zweiten Federelement,
Figur 5
eine Rückansicht des in Figur 4 dargestellten Übertragungselements,
Figur 6
eine Draufsicht des in Figur 4 dargestellten Übertragungselements,
Figur 7
einen Längsschnitt eines Hohlrades und
Figur 8
eine Rückansicht des in Figur 7 dargestellten Hohlrades.
An exemplary embodiment of the invention is described below with reference to the drawing. Show it:
Figure 1
part of a longitudinal section of a winding shaft of a roller shutter according to the invention,
Figure 2
a side view of a first spring element,
Figure 3
2 shows a top view of the spring element shown in FIG. 2,
Figure 4
2 shows a longitudinal section of a transmission element with a second spring element,
Figure 5
3 shows a rear view of the transmission element shown in FIG. 4,
Figure 6
3 shows a plan view of the transmission element shown in FIG. 4,
Figure 7
a longitudinal section of a ring gear and
Figure 8
a rear view of the ring gear shown in Figure 7.

Figur 1 zeigt eine an einem Enddeckel 1 eines Rolladenkastens angeordnete Wickelwelle 2, die von einem durch Schrauben 4 am Enddeckel 1 befestigten Rohrmotor 3 antreibbar ist.FIG. 1 shows a winding shaft 2 which is arranged on an end cover 1 of a roller shutter box and can be driven by a tubular motor 3 fastened to the end cover 1 by screws 4.

Auf einer Motorwelle 5 ist ein in den Figuren 2 und 3 dargestelltes erstes Federelement 6 drehfest verbunden. Das erste Federelement 6 weist einen tellerförmigen Grundkörper 7 und daran eine in Halter 8 gehaltene Federzunge 9 auf.On a motor shaft 5, a first spring element 6 shown in Figures 2 and 3 is rotatably connected. The first spring element 6 has a plate-shaped base body 7 and thereon a spring tongue 9 held in the holder 8.

Das erste Federelement 6 ist zentrisch in einem ersten Hohlrad 11 eines Übertragungselementes 10 angeordnet. Dabei greifen die Federzungen 9 je nach Drehrichtung der Motorwelle 5 drehfest rastend oder bei Überschreitung eines vorbestimmten Freigabemoments lastabhängig rastend in eine Innenverzahnung 12 des ersten Hohlrades 11 ein.The first spring element 6 is arranged centrally in a first ring gear 11 of a transmission element 10. Depending on the direction of rotation of the motor shaft 5, the spring tongues 9 engage in an internal toothing 12 of the first ring gear 11 in a rotationally fixed manner or in a load-dependent manner when a predetermined release torque is exceeded.

Das Übertragungselement 10 ist frei drehbar in einer Bohrung 13 auf der Motorwelle 5 gelagert. Das Übertragungselement 10 besteht aus dem ersten Hohlrad 11 und einem zweiten Federelement 14 mit Haltern 15 und darin gehaltenen Federzungen 16, wie in Fig. 4, 5, und 6 gezeigt. Die Federzungen 16 sind entgegengesetzt zu den Federzungen 9 des ersten Federelements 6 ausgerichtet.The transmission element 10 is freely rotatable in a bore 13 on the motor shaft 5. The transmission element 10 consists of the first ring gear 11 and a second spring element 14 with holders 15 and spring tongues 16 held therein, as shown in FIGS. 4, 5 and 6. The spring tongues 16 are oriented opposite to the spring tongues 9 of the first spring element 6.

Das zweite Federelement 14 ist wiederum konzentrisch in einem in Figur 7 und 8 dargestellten zweiten Hohlrad 17 angeordnet. Das zweite Hohlrad 17 weist eine Innenverzahnung 18 und eine am äußeren Umfang angeformte Nase 21 auf. Das zweite Hohlrad 17 ist in einer konzentrischen Bohrung 19 auf der Motorwelle 5 drehfrei gelagert, wobei eine am äußeren Ende der Motorwelle 5 aufgeschraubte Mutter 20 die Teilkupplungen zusammenhält.The second spring element 14 is in turn arranged concentrically in a second ring gear 17 shown in FIGS. 7 and 8. The second ring gear 17 has an internal toothing 18 and a nose 21 formed on the outer circumference. The second ring gear 17 is in a concentric bore 19 on the motor shaft 5 mounted non-rotatably, a nut 20 screwed onto the outer end of the motor shaft 5 holding the partial couplings together.

Die beiden Federelemente 6, 14 weisen jeweils vier symmetrisch in den Haltern 8, 15 verteilte Federzungen 9, 16 auf. Die Federzungen 9, 16 sind an Einspannstellen 23 an den Haltern 8, 15 befestigt. Die Federzungen 9, 16 bestehen aus 0,2 - 0,5 mm starken Stahlblechstreifen, an deren Enden ein halbbogenförmiges Aufgleitprofil 24 eingeformt ist. Dieses Aufgleitprofil 24 greift in die Innenverzahnung 12, 18 der zugeordneten Hohlräder 11, 17 ein.The two spring elements 6, 14 each have four spring tongues 9, 16 distributed symmetrically in the holders 8, 15. The spring tongues 9, 16 are fastened to the holders 8, 15 at clamping points 23. The spring tongues 9, 16 consist of 0.2-0.5 mm thick steel sheet strips, at the ends of which a semi-arc-shaped slide-on profile 24 is formed. This slide-on profile 24 engages in the internal toothing 12, 18 of the associated ring gears 11, 17.

Die auf das Übertragungselement 10 übertragene Drehbewegung wird mittels zweitem Federelement 14 auf das zweite Hohlrad 17 übertragen. Dabei greifen die Federzungen 16 des zweiten Federelements 14 in die Innenverzahnung 18 des zweiten Hohlrades 17 ein. Die entgegengesetzt zu den Federzungen 9 des ersten Federelements 6 ausgerichteten Federzungen 16 bewirken so auch eine lastabhängige Kupplung der zweiten Drehrichtung, wobei durch verschiedene Ausbildung der Federzungen 9 bzw. 16 unterschiedliche Freigabemomente vorwählbar sind. Die Drehbewegung des zweiten Hohlrades 17 wird über die Nase 21, die in einer Nut 22 in der Wickelwelle 2 eingreift, auf die Wickelwelle 2 im Rolladenkasten übertragen. Die Wickelwelle 2 rollt den Rolladen auf bzw. ab.The rotational movement transmitted to the transmission element 10 is transmitted to the second ring gear 17 by means of a second spring element 14. The spring tongues 16 of the second spring element 14 engage in the internal toothing 18 of the second ring gear 17. The spring tongues 16, which are oriented opposite to the spring tongues 9 of the first spring element 6, thus also effect a load-dependent coupling of the second direction of rotation, wherein different release moments can be preselected by different design of the spring tongues 9 or 16. The rotational movement of the second ring gear 17 is transmitted via the nose 21, which engages in a groove 22 in the winding shaft 2, to the winding shaft 2 in the roller shutter box. The winding shaft 2 rolls up and down the roller shutters.

Besonders vorteilhaft läßt sich die Kupplung auch manuell, beispielsweise mittel einer Kurbel, bewegten Rolladen vorsehen. Schäden durch Fehlbedienung werden so vermieden.The coupling can also be provided particularly advantageously manually, for example by means of a crank, moving roller shutters. This prevents damage caused by incorrect operation.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
EnddeckelEnd cover
22nd
WickelwelleWinding shaft
33rd
RohrmotorTubular motor
44th
Schraubescrew
55
MotorwelleMotor shaft
66
erstes Federelementfirst spring element
77
GrundkörperBasic body
88th
Halterholder
99
FederzungeSpring tongue
1010th
ÜbertragungselementTransmission element
1111
erstes Hohlradfirst ring gear
1212
InnenverzahnungInternal teeth
1313
Bohrungdrilling
1414
zweites Federelementsecond spring element
1515
Muttermother
1616
FederzungeSpring tongue
1717th
zweites Hohlradsecond ring gear
1818th
InnenverzahnungInternal teeth
1919th
Bohrungdrilling
2020th
Halterholder
2121
Nasenose
2222
NutGroove
2323
EinspannstelleClamping point
2424th
AufgleitprofilSliding profile

Claims (13)

Rolladen, insbesondere für Dachfenster, mit einer vorzugsweise oben angeordneten Wickelwelle, die von einem Motor über eine Rutschkupplung angetrieben ausgebildet ist, dadurch gekennzeichnet, daß die Rutschkupplung in beide Drehrichtungen wirkend ausgebildet ist.Roller shutters, in particular for roof windows, with a winding shaft, preferably arranged at the top, which is designed to be driven by a motor via a slip clutch, characterized in that the slip clutch is designed to act in both directions of rotation. Rolladen nach Anspruch 1, dadurch gekennzeichnet, daß die Rutschkupplung Freigabemomente aufweist, die für beide Drehrichtungen unterschiedlich ausgebildet sind.Roller shutter according to claim 1, characterized in that the slip clutch has release moments which are designed differently for both directions of rotation. Rolladen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Rutschkupplung aus zwei Teilkupplungen besteht, wobei jeder Teil nur in einer Drehrichtung ein Freigabemoment aufweist und in der Gegenrichtung die gekuppelten Teile drehfest verbindend ausgebildet sind.Roller shutter according to claim 1 or 2, characterized in that the slipping clutch consists of two partial clutches, each part having a release torque only in one direction of rotation and the coupled parts being constructed in a rotationally fixed connection in the opposite direction. Rolladen nach Anspruch 1, 2 oder 3 , dadurch gekennzeichnet, daß die Rutschkupplung innerhalb der Wickelwelle (2), vorzugsweise in Verbindung mit einem Rohrmotor (3), angeordnet ist.Roller shutter according to claim 1, 2 or 3, characterized in that the slip clutch is arranged within the winding shaft (2), preferably in connection with a tubular motor (3). Rolladen nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, daß die Rutschkupplung ein, vorzugsweise als Hohlrad (11, 17) ausgebildetes, Zahnrad aufweist, in dessen Zähne eine Federzunge (9, 16) eingreifend angeordnet ist, die in einer Drehrichtung einen Biegestab und in entgegengesetzter Richtung einen Knickstab bildet.Roller shutter according to claim 1, 2, 3 or 4, characterized in that the slip clutch has a gear, preferably designed as a ring gear (11, 17), in the teeth of which a spring tongue (9, 16) is arranged so as to engage in one direction of rotation forms a bending rod and a buckling rod in the opposite direction. Rolladen nach Anspruch 5, dadurch gekennzeichnet, daß mehrere, insbesondere vier, Federzungen (9, 16) in die Zähne des Zahnrades eingreifend angeordnet sind.Roller shutter according to claim 5, characterized in that several, in particular four, spring tongues (9, 16) are arranged engaging in the teeth of the gear wheel. Rolladen nach Anspruch 3, 4, 5 oder 6, dadurch gekennzeichnet, daß jeder Teilkupplung ein als Hohlrad ausgebildetes Zahnrad und ein zentrisch dazu angeordnetes Federelement zugeordnet sind, wobei ein Hohlrad (17) drehfest mit der Wickelwelle (2) und ein Federelement (6) drehfest mit der Motorwelle (5) und das andere Federelement (14) und Hohlrad (11) drehfest miteinander ausgebildet sind.Roller shutter according to claim 3, 4, 5 or 6, characterized in that each partial coupling is assigned a gear wheel designed as a ring gear and a spring element arranged centrally to it, a ring gear (17) being rotationally fixed to the winding shaft (2) and a spring element (6) rotatably with the motor shaft (5) and the other spring element (14) and ring gear (11) are rotatably formed with each other. Rolladen nach Anspruch 5, 6 oder 7, dadurch gekennzeichnet, daß die Federzunge (9, 16) als Blechstreifen mit vorzugsweise eingeformtem Aufgleitprofil ausgebildet ist.Roller shutter according to claim 5, 6 or 7, characterized in that the spring tongue (9, 16) is designed as a sheet metal strip with a preferably molded-in sliding profile. Rolladen nach Anspruch 5, 6, 7 oder 8, dadurch gekennzeichnet, daß die Federzungen (9, 16)zueinander symmetrisch angeordnet sind.Roller shutter according to claim 5, 6, 7 or 8, characterized in that the spring tongues (9, 16) are arranged symmetrically to one another. Rolladen nach Anspruch 5, 6, 7, 8 oder 9, dadurch gekennzeichnet, daß die Federzungen (9, 16) ihrem Freigabemoment entsprechend aus unterschiedlich dicken Blechstreifen geformt sind.Roller shutter according to claim 5, 6, 7, 8 or 9, characterized in that the spring tongues (9, 16) are formed from sheet metal strips of different thicknesses in accordance with their release torque. Rolladen nach Anspruch 5, 6, 7, 8, 9 oder 10, dadurch gekennzeichnet, daß die Federzunge (9, 16) eine freie Biegelänge aufweist, die dem halben bis ganzen Teilkreisradius, insbesondere etwa dem 0,7-fachen Teilkreisradius, des Hohlrades (11, 17) entspricht.Roller shutter according to claim 5, 6, 7, 8, 9 or 10, characterized in that the spring tongue (9, 16) has a free bending length which is half to the entire pitch circle radius, in particular approximately 0.7 times the pitch circle radius, of the ring gear (11, 17) corresponds. Rolladen nach Anspruch 5, 6, 7, 8, 9, 10 oder 11, dadurch gekennzeichnet, daß die Federzunge (9, 16) eine tangentiale Richtung zu einem um das Federelement (6, 14) gedachten konzentrischen Kreis mit einem Radius von etwa dem 0,7-fachen des Teilkreises aufweist.Roller shutter according to Claim 5, 6, 7, 8, 9, 10 or 11, characterized in that the spring tongue (9, 16) has a tangential direction to a concentric circle with a radius of approximately that intended around the spring element (6, 14) 0.7 times the pitch circle. Rolladen nach Anspruch 5, 6, 7, 8, 9, 10, 11 oder 12, dadurch gekennzeichnet, daß die Federzunge (9, 16) eine Einspannstelle (23) aufweist, die etwa auf einem gedachten Halbkreis über dem Teilkreisradius des Hohlrades (11, 17) am Eingriffort der Federzunge in die Verzahnung des Hohlrades angeordnet ist.Roller shutter according to claim 5, 6, 7, 8, 9, 10, 11 or 12, characterized in that the spring tongue (9, 16) has a clamping point (23) which is approximately on an imaginary semicircle above the pitch circle radius of the ring gear (11 , 17) is arranged at the point of engagement of the spring tongue in the toothing of the ring gear.
EP91122350A 1991-03-09 1992-01-01 Roller with slip-clutch Expired - Lifetime EP0503161B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4107611A DE4107611A1 (en) 1991-03-09 1991-03-09 REEL SHAFT WITH SLIP CLUTCH
DE4107611 1991-03-09

Publications (3)

Publication Number Publication Date
EP0503161A2 true EP0503161A2 (en) 1992-09-16
EP0503161A3 EP0503161A3 (en) 1993-04-14
EP0503161B1 EP0503161B1 (en) 1995-07-19

Family

ID=6426882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91122350A Expired - Lifetime EP0503161B1 (en) 1991-03-09 1992-01-01 Roller with slip-clutch

Country Status (5)

Country Link
EP (1) EP0503161B1 (en)
JP (1) JPH0565785A (en)
AT (1) ATE125330T1 (en)
DE (2) DE4107611A1 (en)
ES (1) ES2075319T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2785274A1 (en) * 1998-11-02 2000-05-05 Fermetures Henri Peyrichou DEVICE FOR AUTOMATICALLY STOPPING THE OPERATION OF A MOTORIZED WINDING ELEMENT
AT503139B1 (en) * 2006-02-08 2009-02-15 Blum Gmbh Julius OUTBOARD WITH SLIP COUPLING
EP2085564A2 (en) 2008-01-30 2009-08-05 Gerhard Geiger GmbH & Co. Drive device with a friction clutch or brake

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19519440A1 (en) * 1995-05-26 1996-11-28 Theodor Kuhlmann Roller shutter for windows and doors
KR100522357B1 (en) 2003-09-26 2005-11-09 주식회사 윈스피아 Built-in gearing blind device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU79577A1 (en) * 1978-03-31 1978-11-03 Becker Kg E & A DRIVE SHAFT FOR A ROLLER SHUTTER, AN AWNING OR THE LIKE.
CH662868A5 (en) * 1982-05-10 1987-10-30 Baumann Rolladen Torque-limiting coupling
CH662859A5 (en) * 1984-03-21 1987-10-30 Griesser Ag Overload safety device for a roller shutter, blind or awning drive

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8412842U1 (en) * 1984-04-26 1984-07-19 Baier, Paul, 7592 Renchen SHUTTERS FOR ROOF WINDOWS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU79577A1 (en) * 1978-03-31 1978-11-03 Becker Kg E & A DRIVE SHAFT FOR A ROLLER SHUTTER, AN AWNING OR THE LIKE.
CH662868A5 (en) * 1982-05-10 1987-10-30 Baumann Rolladen Torque-limiting coupling
CH662859A5 (en) * 1984-03-21 1987-10-30 Griesser Ag Overload safety device for a roller shutter, blind or awning drive

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2785274A1 (en) * 1998-11-02 2000-05-05 Fermetures Henri Peyrichou DEVICE FOR AUTOMATICALLY STOPPING THE OPERATION OF A MOTORIZED WINDING ELEMENT
EP0999336A1 (en) * 1998-11-02 2000-05-10 S.A. Fermetures Henri Peyrichou (société Anonyme) Device for automatic stopping the operation of a motorized element able to be rolled up
AT503139B1 (en) * 2006-02-08 2009-02-15 Blum Gmbh Julius OUTBOARD WITH SLIP COUPLING
US8220883B2 (en) 2006-02-08 2012-07-17 Julius Blum Gmbh Ejection device with slipping clutch
EP2085564A2 (en) 2008-01-30 2009-08-05 Gerhard Geiger GmbH & Co. Drive device with a friction clutch or brake

Also Published As

Publication number Publication date
EP0503161A3 (en) 1993-04-14
ES2075319T3 (en) 1995-10-01
DE4107611C2 (en) 1993-06-03
ATE125330T1 (en) 1995-08-15
EP0503161B1 (en) 1995-07-19
DE4107611A1 (en) 1992-09-17
DE59202890D1 (en) 1995-08-24
JPH0565785A (en) 1993-03-19

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