EP0372004B1 - Tableau curtain - Google Patents

Tableau curtain Download PDF

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Publication number
EP0372004B1
EP0372004B1 EP88909510A EP88909510A EP0372004B1 EP 0372004 B1 EP0372004 B1 EP 0372004B1 EP 88909510 A EP88909510 A EP 88909510A EP 88909510 A EP88909510 A EP 88909510A EP 0372004 B1 EP0372004 B1 EP 0372004B1
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EP
European Patent Office
Prior art keywords
winding
worm
curtain according
gear mechanism
curtain
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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.)
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EP88909510A
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German (de)
French (fr)
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EP0372004A1 (en
Inventor
Werner Flückiger
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Individual
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Individual
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Priority to AT88909510T priority Critical patent/ATE72740T1/en
Publication of EP0372004A1 publication Critical patent/EP0372004A1/en
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    • 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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
    • 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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B2009/2482—Special shape
    • E06B2009/2494—Trapezoidal or triangular
    • 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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
    • E06B2009/2622—Gathered vertically; Roman, Austrian or festoon blinds

Definitions

  • the invention relates to a Roman blind according to the preamble of independent claim 1.
  • the invention has for its object to provide a Roman blind of the type mentioned, which avoids these difficulties and which is still easy to install and reliable.
  • inventive venetian blind is particularly suitable for inclined windows.
  • the diameter is not limited to the distance between the curtain and the window and can be much larger and accordingly the curtain can be longer. Damage to the curtain material due to tangential stripes on the winding rollers is avoided in the inventive venetian blind. Separate pillow blocks are unnecessary in terms of assembly and the inventory is simplified considerably.
  • a braking device is created in a structurally simple manner, by means of which the curtain is automatically locked in any desired intermediate position.
  • a roman blind is created, which eliminates the need for an additional braking device and with which, due to the ratio of the worm gear, even heavy curtains can be pulled up with little effort.
  • a self-locking worm gear is arranged between the drive member and the winding shaft.
  • the gears between the winding rollers and the winding shaft can be conventional inexpensive gears without self-locking.
  • a drive wheel is preferably mounted such that its axis of rotation is perpendicular to the winding shaft, so that there is an arrangement similar to that of the winding rollers.
  • Fig. 1 shows a vertically hanging curtain fabric 8, on which a weight profile 9 is attached.
  • the axes of the winding rolls 3 are arranged horizontally and at right angles to a winding shaft 2 which is connected to a drive wheel 12 which can be driven by means of a ball chain.
  • the winding shaft 2 is arranged horizontally and in the case of a Roman blind for an oblique window, it is inclined.
  • a curtain rail 1 runs parallel to the winding shaft 2 and is attached in the usual way to the ceiling, the wall or the window.
  • the curtain fabric 8 is detachably fastened to this curtain rail 1 by means of pile and chain band 28.
  • the ball chain 10 is pulled, in the case of the Roman blind for an oblique window below the drive wheel 12 a guide roller 11 is attached.
  • the elevator belts 6 are wound onto the winding rollers 3 and the curtain is pulled up, while in the other pulling direction the elevator belts 6 are unwound synchronously and the curtain is lowered. As explained in more detail below, the curtain stops automatically in any position after the ball chain is released.
  • the winding rollers 3 are each mounted in a housing which essentially consists of a housing body 13 and two covers 14 and 15 which are detachably placed on them.
  • a housing body 13 On the housing body 13 two spaced brackets are integrally formed, which are detachably inserted in the curtain rail 1 and slidably in the longitudinal direction.
  • the housing body 13 has a vertical wall 32 which divides the housing into two chambers 30 and 31.
  • the winding roll 3 with the tape roll 19 is accommodated in the chamber 30.
  • the chamber 30 also has one Detachably attached lid 15, which has on the inside a projection 22 which engages in the winding roller 3 and guides it.
  • the winding roll 3 is formed on a worm wheel 4, which is mounted in an opening 16 of the wall 32 and with a bearing pin 24 in an opening 33 of a further cover 14.
  • the teeth 18 of the worm wheel 4 mesh with a worm 5 which is mounted on the housing part 13 and on the cover 14.
  • the worm wheel 5 is connected to the winding shaft 2 in a rotationally fixed and displaceable manner in the longitudinal direction. It is often necessary to tension a wrap 19 or to loosen something so that all the straps 6 pull the curtain fabric 8 up exactly in sync. This can be achieved in a simple manner by pulling the worm wheel 4 out of the chamber 31 with the cover 15 removed on the winding roller 3 and rotating it in one or the other direction in the uncoupled state, and thus adjusting the slot 34.
  • a venetian blind is obtained which, despite the considerable advantages, clearly has relatively few, robust and simple components and which, when used as a venetian blind for an oblique window or very tall window, also meets the practical requirements, including very gentle treatment of the curtain fabric, in an excellent manner Wise account and who is also cheap in production and very reliable in operation.
  • the gear ratio of the worm gear is selected so that the elevator is self-locking, taking into account the friction of the moving parts. If the worm 5 is made of nylon and the worm wheel 4 is made of Delrin, self-locking with a ratio of about 1: 4.2 is achieved. Without friction, the gear ratio would have to be about 1: 6 for self-locking to occur. It has been shown that a gear ratio of approximately 1: 4 is advantageous for a Roman blind. On the one hand, heavy curtains can be operated with little effort and, on the other hand, the gear ratio is not so great that the curtain moves too slowly.
  • the self-locking effect means that the curtain stops immediately in the position reached when the ball chain is released, even in any intermediate position. In particular, this prevents the weight profile 9 from whizzing downward when the ball chain 10 is released unintentionally and injuring a person or damaging the curtain.
  • the lid 14 is detachably attached to the housing body 13 by means of a snap device 20.
  • the cover 15 is also attached to the housing body 13 with a similar snap device.
  • the take-up roll 3 is enclosed in the housing and is not otherwise rotating There are parts that line the curtain fabric and could damage it. Since the housing body 13 is continuously displaceable on the winding shaft 2, it is possible in any case to bring the slot 21 exactly on the line of the eyelets 7. In the selected position, the housing body 13 can then always be attached to the curtain rail 1.
  • the gears between the winding rollers and the winding shaft are conventional cross gears without self-locking.
  • the drive roller 12 is connected to the winding shaft via a self-locking worm gear.
  • the drive roller 12 like a winding roller, is mounted with its axis of rotation transversely to the winding shaft on the rail 1 in a housing. This version is significantly less expensive since only a worm gear is provided.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Blinds (AREA)

Abstract

A winding shaft (2) is driven by a bead chain (10) and is connected to winding rollers (3) via worm gears (4, 5). Each winding roller (3) is intergral with a worm wheel (4) rotatably mounted in a housing (13). When the tableau curtain is mounted, the axes of the worm wheels (4) are arranged horizontally and perpendicular to the winding shaft (2). The transmission ratio of the worm gear (4, 5) is chosen so that the lift is self-locking. A separate braking device is not required. The tableau curtain is particularly suited for sloping windows, as well as for tall windows and heavy curtain materials.

Description

Die Erfindung betrifft einen Raffvorhang nach dem Oberbegriff des unabhängigen Anspruchs 1.The invention relates to a Roman blind according to the preamble of independent claim 1.

Im Stand der Technik ist ein solcher Raffvorhang durch die US-A-2 676 654 bekannt. Bei diesem sind die Wickelrollen ohne axiales Spiel fest mit der Wickelwelle verbunden und neben jeder Wickelrolle ist ein separater Lagerbock angeordnet, der an der Gebäudewand befestigt ist.Such a Roman blind is known in the prior art from US-A-2,676,654. In this case, the winding rollers are firmly connected to the winding shaft without axial play, and a separate bearing block is arranged next to each winding roller and is fastened to the building wall.

Durch die EP-A-0 118 700 ist ein Raffvorhang dieser Gattung bekannt, bei dem die Wickelrollen mit axialem Spiel in Achsrichtung der Wickelwelle verschiebbar sind und bei dem ebenfalls jeder Wickelrolle ein Lagerbock und ausserdem ein Stellring zugeordnet sind.From EP-A-0 118 700 a gathering curtain of this type is known, in which the winding rollers can be displaced with axial play in the axial direction of the winding shaft and in which a bearing block and also an adjusting ring are also assigned to each winding roller.

Bei diesen Raffvorhängen besteht die Schwierigkeit, dass sie für Schrägfenster, bei denen die Wickelwelle schräg angeordnet ist, nicht verwendet werden können und infolge der begrenzten Platzverhältnisse hinter dem Vorhang die Schnur- oder Bandaufnahme der Wickelrollen auf etwa 3 m beschränkt sind.The problem with these venetian blinds is that they cannot be used for inclined windows in which the winding shaft is arranged at an angle, and due to the limited space behind the curtain, the cord or ribbon take-up of the winding rollers is limited to approximately 3 m.

Der Erfindung liegt die Aufgabe zugrunde, einen Raffvorhang der genannten Gattung zu schaffen, der diese Schwierigkeiten vermeidet und der trotzdem einfach montierbar und funktionssicher ist.The invention has for its object to provide a Roman blind of the type mentioned, which avoids these difficulties and which is still easy to install and reliable.

Die Aufgabe wird durch die Erfindung gemäss Anspruch 1 gelöst.The object is achieved by the invention according to claim 1.

Auch bei einer starken Schrägstellung der Wickelwelle werden Aufzugschnüre und Aufzugbänder ohne zu streifen einwandfrei aufgespult, weshalb sich der erfindungsgemässe Raffvorhang besonders auch für Schrägfenster eignet. Der Durchmesser ist nicht auf den Abstand zwischen Vorhang und Fenster begrenzt und kann wesentlich grösser und entsprechend der Vorhang länger sein. Eine Beschädigung des Vorhangstoffes durch tangentiales Streifen an den Wickelrollen wird beim erfindungsgemässen Raffvorhang vermieden. Separate Lagerböcke sind entbehrlich, was die Montage und die Lagerhaltung wesentlich vereinfacht.Even with a strong inclination of the winding shaft, elevator cords and elevator tapes are wound up without streaking, which is why the inventive venetian blind is particularly suitable for inclined windows. The diameter is not limited to the distance between the curtain and the window and can be much larger and accordingly the curtain can be longer. Damage to the curtain material due to tangential stripes on the winding rollers is avoided in the inventive venetian blind. Separate pillow blocks are unnecessary in terms of assembly and the inventory is simplified considerably.

Durch die Weiterbildung nach Anspruch 2 wird in konstruktiv einfacher Weise eine Bremseinrichtung geschaffen, durch die der Vorhang in jeder gewünschten Zwischenstellung selbsttätig arretiert wird.Through the development according to claim 2, a braking device is created in a structurally simple manner, by means of which the curtain is automatically locked in any desired intermediate position.

Durch die Weiterbildung nach Anspruch 3 wird ein Raffvorhang geschaffen, der eine zusätzliche Bremsvorrichtung erübrigt und mit dem durch das Uebersetzungsverhältnis des Schneckengetriebes auch schwere Vorhänge mit geringem Kraftaufwand hochgezogen werden können.Through the development according to claim 3, a roman blind is created, which eliminates the need for an additional braking device and with which, due to the ratio of the worm gear, even heavy curtains can be pulled up with little effort.

Eine hohe Abspulgeschwindigkeit und eine Zerstörung der Wickeleinrichtung, des Bedienungselements oder des Vorhangstoffes infolge einer grossen Massenverzögerung wird vermieden. Ebenfalls dürften Unfälle durch ein mit grosser Geschwindigkeit heruntersausendes Beschwerungsprofil beim erfindungsgemässen Raffvorhang nicht mehr vorkommen.A high unwinding speed and destruction of the winding device, the operating element or the curtain material due to a large delay in mass is avoided. Likewise, accidents due to a weight profile that drops down at great speed should no longer occur in the inventive venetian blind.

Durch die Weiterentwicklung nach Anspruch 5 wird verhindert, dass sich das Aufzugelement beim Auf- oder Abspulen verfangen kann und eine besonders einfache Montage ermöglicht.The further development according to claim 5 prevents the elevator element from getting caught when winding or unwinding and enables particularly simple assembly.

Bei den Ausführungen nach den Ansprüchen 9 und 10 ist ein selbsthemmendes Schneckengetriebe zwischen dem Antriebsorgan und der Wickelwelle angeordnet. Hier können die Getriebe zwischen den Wickelrollen und der Wickelwelle übliche kostengünstige Getriebe ohne Selbsthemmung sein. Vorzugsweise ist ein Antriebsrad so gelagert, dass seine Drehachse senkrecht zur Wickelwelle steht, so dass eine ähnliche Anordnung wie bei den Wickelrollen vorliegt.In the embodiments according to claims 9 and 10, a self-locking worm gear is arranged between the drive member and the winding shaft. Here, the gears between the winding rollers and the winding shaft can be conventional inexpensive gears without self-locking. A drive wheel is preferably mounted such that its axis of rotation is perpendicular to the winding shaft, so that there is an arrangement similar to that of the winding rollers.

Vorteilhafte Weiterbildungen ergeben sich aus den übrigen abhängigen Ansprüchen.Advantageous further developments result from the remaining dependent claims.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

  • Fig. 1 Ansichten eines montierten Raffvorhangs für ein Schrägfenster und eines Raffvorhangs für ein übliches Fenster,
  • Fig. 2 einen Schnitt durch einen an einer Profilschiene fixierten Halter mit Getriebe und Wickelrad,
  • Fig. 3 eine Ansicht in Pfeilrichtung III von Fig. 2 eines Teils des Halters mit eingesetztem Getriebe und Wickelrolle, und
  • Fig. 4 eine Ansicht in Pfeilrichtung IV von Fig. 2 des Teils nach Fig. 3.
Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Show it:
  • 1 views of an assembled roman blind for an oblique window and a roman blind for a conventional window,
  • 2 shows a section through a holder fixed on a profile rail with gear and winding wheel,
  • Fig. 3 is a view in the direction of arrow III of Fig. 2 of part of the holder with an inserted gear and winding roller, and
  • 4 shows a view in the direction of arrow IV from FIG. 2 of the part according to FIG. 3.

Die Fig. 1 zeigt einen vertikal hängenden Vorhangstoff 8, an dem ein Gewichtsprofil 9 angebracht ist. Mehrere im Abstand und parallel zueinander angeordnete Aufzugbänder 6 sind jeweils an einem Ende am Gewichtsprofil 9 und am anderen Ende in einem Schlitz 34 der Wickelrolle 3 (Fig. 2) festgeklemmt. Zwischen ihren Enden sind die Aufzugbänder 6 mittels Oesen 7 geführt, die am Vorhangstoff 8 befestigt sind, und durch welche die Aufzugbänder 6 leicht verschiebbar hindurchgezogen sind.Fig. 1 shows a vertically hanging curtain fabric 8, on which a weight profile 9 is attached. A plurality of elevator belts 6, which are spaced apart and parallel to one another, are each clamped at one end to the weight profile 9 and at the other end in a slot 34 in the winding roll 3 (FIG. 2). Between their ends, the elevator belts 6 are guided by means of eyelets 7, which are fastened to the curtain fabric 8 and through which the elevator belts 6 are pulled so that they can be moved easily.

Die Achsen der Wickelrollen 3 sind horizontal und im rechten Winkel zu einer Wickelwelle 2 angeordnet, die mit einem Antriebsrad 12 verbunden ist, das mittels einer Kugelkette angetrieben werden kann. Bei einem üblichen Fenster ist die Wickelwelle 2 horizontal und bei einem Raffvorhang für ein Schrägfenster geneigt angeordnet. Eine Vorhangschiene 1 verläuft parallel zur Wickelwelle 2 und ist in üblicher Weise an der Decke, an der Wand oder am Fenster befestigt. An dieser Vorhangschiene 1 ist wie in Fig. 2 gezeigt der Vorhangstoff 8 mittels Flor- und Kettenband 28 lösbar befestigt. Um den Vorhang zu betätigen, wird an der Kugelkette 10 gezogen, wobei im Fall des Raffvorhangs für ein Schrägfenster unterhalb des Antriebsrads 12 eine Führungsrolle 11 angebracht ist. In der einen Zugrichtung der endlosen Kugelkette 10 werden die Aufzugbänder 6 auf die Wickelrollen 3 aufgewickelt und der Vorhang hochgezogen während in der anderen Zugrichtung die Aufzugbänder 6 synchron abgespult und der Vorhang heruntergelassen wird. Wie weiter unten näher erläutert ist, bleibt der Vorhang nach dem Loslassen der Kugelkette in jeder Position selbsttätig sofort stehen.The axes of the winding rolls 3 are arranged horizontally and at right angles to a winding shaft 2 which is connected to a drive wheel 12 which can be driven by means of a ball chain. In the case of a conventional window, the winding shaft 2 is arranged horizontally and in the case of a Roman blind for an oblique window, it is inclined. A curtain rail 1 runs parallel to the winding shaft 2 and is attached in the usual way to the ceiling, the wall or the window. As shown in FIG. 2, the curtain fabric 8 is detachably fastened to this curtain rail 1 by means of pile and chain band 28. In order to actuate the curtain, the ball chain 10 is pulled, in the case of the Roman blind for an oblique window below the drive wheel 12 a guide roller 11 is attached. In one pulling direction of the endless ball chain 10, the elevator belts 6 are wound onto the winding rollers 3 and the curtain is pulled up, while in the other pulling direction the elevator belts 6 are unwound synchronously and the curtain is lowered. As explained in more detail below, the curtain stops automatically in any position after the ball chain is released.

Wie die Fig. 2 bis 4 zeigen, sind die Wickelrollen 3 jeweils in einem Gehäuse gelagert, das im wesentlichen aus einem Gehäusekörper 13 und zwei lösbar auf diesen aufgesetzten Deckeln 14 und 15 besteht. Am Gehäusekörper 13 sind oben zwei im Abstand angeordnete Bügel angeformt, die in die Vorhangschiene 1 lösbar und in Längsrichtung verschiebbar eingesetzt sind.As shown in FIGS. 2 to 4, the winding rollers 3 are each mounted in a housing which essentially consists of a housing body 13 and two covers 14 and 15 which are detachably placed on them. On the housing body 13 two spaced brackets are integrally formed, which are detachably inserted in the curtain rail 1 and slidably in the longitudinal direction.

Der Gehäusekörper 13 weist eine vertikale Wand 32 auf, welche das Gehäuse in zwei Kammern 30 und 31 unterteilt. In der Kammer 30 ist die Wickelrolle 3 mit dem Bandwickel 19 untergebracht. Im unteren Teil der Kammer 30 befindet sich ein enger Schlitz 21, in dem das Aufzugband 6 geführt ist. Dieser Schlitz 21 verhindert eine Verdrehung des Bandes 6 in der Kammer 30 und damit eine Störung bei der Bildung des Wickels 19. Die Kammer 30 weist ausserdem einen lösbar aufgesetzten Deckel 15 auf, der auf der Innenseite einen in die Wickelrolle 3 eingreifenden und diesen führenden Vorsprung 22 aufweist. Die Wickelrolle 3 ist an einem Schneckenrad 4 angeformt, das in einer Oeffnung 16 der Wand 32 und mit einem Lagerzapfen 24 in einer Oeffnung 33 eines weiteren Deckels 14 gelagert ist. Die Zähne 18 des Schneckenrads 4 kämmen mit einer Schnecke 5, die am Gehäuseteil 13 und am Deckel 14 gelagert ist. Das Schneckenrad 5 ist drehfest und in Längsrichtung verschiebbar mit der Wickelwelle 2 verbunden. Oft ist es erforderlich, einen Wickel 19 zu spannen oder etwas zu lösen, damit alle Bänder 6 den Vorhangstoff 8 genau synchron hochziehen. Dies lässt sich in einfacher Weise dadurch erreichen, dass das Schneckenrad 4 bei abgenommenem Deckel 15 an der Wickelrolle 3 aus der Kammer 31 herausgezogen und im entkoppelten Zustand in der einen oder anderen Richtung gedreht wird und damit der Schlitz 34 verstellt wird.The housing body 13 has a vertical wall 32 which divides the housing into two chambers 30 and 31. The winding roll 3 with the tape roll 19 is accommodated in the chamber 30. In the lower part of the chamber 30 there is a narrow slot 21 in which the elevator belt 6 is guided. This slot 21 prevents rotation of the band 6 in the chamber 30 and thus a disturbance in the formation of the roll 19. The chamber 30 also has one Detachably attached lid 15, which has on the inside a projection 22 which engages in the winding roller 3 and guides it. The winding roll 3 is formed on a worm wheel 4, which is mounted in an opening 16 of the wall 32 and with a bearing pin 24 in an opening 33 of a further cover 14. The teeth 18 of the worm wheel 4 mesh with a worm 5 which is mounted on the housing part 13 and on the cover 14. The worm wheel 5 is connected to the winding shaft 2 in a rotationally fixed and displaceable manner in the longitudinal direction. It is often necessary to tension a wrap 19 or to loosen something so that all the straps 6 pull the curtain fabric 8 up exactly in sync. This can be achieved in a simple manner by pulling the worm wheel 4 out of the chamber 31 with the cover 15 removed on the winding roller 3 and rotating it in one or the other direction in the uncoupled state, and thus adjusting the slot 34.

Aus den obigen Angaben ergibt sich somit ein Raffvorhang, der trotz der erheblichen Vorteile ersichtlich verhältnismässig wenige, robuste und einfache Bauteile aufweist und der auch in der Anwendung als Raffvorhang für ein Schrägfenster oder sehr hohes Fenster den praktischen Anforderungen einschliesslich sehr schonender Behandlung des Vorhangstoffes in hervorragender Weise Rechnung trägt und der zudem in wer Herstellung günstig und betrieblich sehr zuverlässig ist.From the above information, a venetian blind is obtained which, despite the considerable advantages, clearly has relatively few, robust and simple components and which, when used as a venetian blind for an oblique window or very tall window, also meets the practical requirements, including very gentle treatment of the curtain fabric, in an excellent manner Wise account and who is also cheap in production and very reliable in operation.

Das Uebersetzungsverhältnis des Schneckengetriebes ist so gewählt, dass der Aufzug selbsthemmend ist, wobei die Reibung der bewegten Teile berücksichtigt sind. Ist die Schnecke 5 aus Nylon und das Schneckenrad 4 aus Delrin hergestellt, so wird eine Selbsthemmung mit einer Uebersetzung von etwa 1 : 4,2 erreicht. Ohne Reibung müsste das Uebersetzungsverhältnis etwa 1 : 6 sein, damit Selbsthemmung auftritt. Es hat sich gezeigt, dass ein Uebersetzungsverhältnis von etwa 1:4 für einen Raffvorhang vorteilhaft ist. Einerseits können auch schwere Vorhänge mit geringem Kraftaufwand betätigt werden und anderseits ist das Uebersetzungsverhältnis doch nicht so gross, dass sich der Vorhang zu langsam bewegt. Die Selbsthemmung bewirkt, dass der Vorhang auch in jeder Zwischenstellung beim Loslassen der Kugelkette sofort in der erreichten Position stehenbleibt. Damit wird insbesondere verhindert, dass das Gewichtsprofil 9 bei einem unbeabsichtigen Loslassen der Kugelkette 10 nach unten saust und eine Person verletzen oder den Vorhang beschädigen kann.The gear ratio of the worm gear is selected so that the elevator is self-locking, taking into account the friction of the moving parts. If the worm 5 is made of nylon and the worm wheel 4 is made of Delrin, self-locking with a ratio of about 1: 4.2 is achieved. Without friction, the gear ratio would have to be about 1: 6 for self-locking to occur. It has been shown that a gear ratio of approximately 1: 4 is advantageous for a Roman blind. On the one hand, heavy curtains can be operated with little effort and, on the other hand, the gear ratio is not so great that the curtain moves too slowly. The self-locking effect means that the curtain stops immediately in the position reached when the ball chain is released, even in any intermediate position. In particular, this prevents the weight profile 9 from whizzing downward when the ball chain 10 is released unintentionally and injuring a person or damaging the curtain.

Der Deckel 14 ist mittels einer Schnappvorrichtung 20 am Gehäusekörper 13 lösbar befestigt. Mit einer ähnlichen Schnappvorrichtung ist auch der Deckel 15 am Gehäusekörper 13 befestigt. Wie ersichtlich, ist die Aufwickelrolle 3 im Gehäuse eingeschlossen und sind auch sonst keine drehenden Teile vorhanden, welche am Vorhangstoff anstehen und diesen beschädigen könnten. Da der Gehäusekörper 13 auf der Wickelwelle 2 stufenlos verschiebbar ist, ist es in jedem Fall möglich, den Schlitz 21 genau auf die Linie der Oesen 7 zu bringen. In der gewählten Position kann dann der Gehäusekörper 13 immer an der Vorhangschiene 1 befestigt werden.The lid 14 is detachably attached to the housing body 13 by means of a snap device 20. The cover 15 is also attached to the housing body 13 with a similar snap device. As can be seen, the take-up roll 3 is enclosed in the housing and is not otherwise rotating There are parts that line the curtain fabric and could damage it. Since the housing body 13 is continuously displaceable on the winding shaft 2, it is possible in any case to bring the slot 21 exactly on the line of the eyelets 7. In the selected position, the housing body 13 can then always be attached to the curtain rail 1.

Bei einer weiteren, nicht dargestellten Ausführung sind die Getriebe zwischen den Wickelrollen und der Wickelwelle übliche Kreuzgetriebe ohne Selbsthemmung. Hingegen ist hier die Antriebsrolle 12 über ein selbsthemmendes Schnekkengetriebe mit der Wickelwelle verbunden. Vorzugsweise ist die Antriebsrolle 12 ähnlich wie eine Wickelrolle mit ihrer Drehachse quer zur Wickelwelle an der Schiene 1 in einem Gehäuse gelagert. Diese Ausführung ist wesentlich kostengünstiger, da lediglich ein Schneckengetriebe vorgesehen ist.In a further embodiment, not shown, the gears between the winding rollers and the winding shaft are conventional cross gears without self-locking. On the other hand, the drive roller 12 is connected to the winding shaft via a self-locking worm gear. Preferably, the drive roller 12, like a winding roller, is mounted with its axis of rotation transversely to the winding shaft on the rail 1 in a housing. This version is significantly less expensive since only a worm gear is provided.

Claims (10)

1. A gathered curtain with a suspension and winding means, the said winding means having a rotatably driven winding shaft (2) on which a plurality of winding rollers (3) are disposed in a spaced apart relationship, characterised in that in each case the axis of the winding roller (3) extends substantially horizontally and transversely to the axis of the winding shaft (2), a gear mechanism (4, 5) being provided to connect the winding shaft (2) to the winding roller (3) and in that the winding roller (3) is rotatably mounted in a holder (13) which is to be fixed on a curtain rail (1), on the window or on a wall.
2. A gathered curtain according to Claim 1, characterised in that at least one gear mechanism (4, 5) is a self-locking worm gear mechanism.
3. A gathered curtain according to Claim 2, characterised in that the worm gear mechanism has a transmission ratio which is so chosen that together with the friction of the winding means it produces a self-locking actuation of the curtain.
4. A gathered curtain according to Claim 3, characterised in that the transmission ratio amounts to about 3 - 5 and preferably 4.2 and in that the gear mechanism is made from synthetic plastics material, the worm wheel (4) being preferably of Delrin while the worm (5) is of nylon.
5. A gathered curtain according to one of Claims 1 to 4, characterised in that the gear mechanism is disposed in the housing (13, 14, 15) which is separably fixed on a profile rail (1) disposed parallel with the winding shaft (2).
6. A gathered curtain according to Claim 5, characterised in that the worm wheel (4) is mounted to rotate in a housing part (13) which subdivides the housing into two chambers, the worm (5) being accommodated in one chamber while the winding roller (3) is accommodated in the other chamber.
7. A gathered curtain according to Claim 6, characterised in that the chamber with the winding roller (3) is closed by a cover (15), the cover (15) having on its inside a projection (22) which engages a recess (23) in and guides the winding roller (3).
8. A gathered curtain according to one of Claims 2 to 7, characterised in that the winding roller (3) is integrally formed on the worm wheel (4).
9. A gathered curtain according to Claim 1, characterised in that the winding shaft (2) is connected to a driving member (10) through a self-locking gear mechanism.
10 A gathered curtain according to Claim 9, characterised in that the driving member (10) drives a driving wheel (12) the rotary spindle of which is mounted at right-angles to the winding shaft (2).
EP88909510A 1987-12-15 1988-11-16 Tableau curtain Expired - Lifetime EP0372004B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88909510T ATE72740T1 (en) 1987-12-15 1988-11-16 RUFFER CURTAIN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH488487 1987-12-15
CH4884/87 1987-12-15

Publications (2)

Publication Number Publication Date
EP0372004A1 EP0372004A1 (en) 1990-06-13
EP0372004B1 true EP0372004B1 (en) 1992-02-26

Family

ID=4284220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88909510A Expired - Lifetime EP0372004B1 (en) 1987-12-15 1988-11-16 Tableau curtain

Country Status (7)

Country Link
US (1) US5092382A (en)
EP (1) EP0372004B1 (en)
JP (1) JPH0754B2 (en)
DE (1) DE3800631A1 (en)
ES (1) ES2012906A6 (en)
FI (1) FI87040C (en)
WO (1) WO1989005603A1 (en)

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US6648050B1 (en) 1997-11-04 2003-11-18 Andrew J. Toti Spring drive system and window cover
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US6508294B1 (en) * 2001-12-06 2003-01-21 Poly Vigor Enteprises Co., Ltd. Raising device for a venetian blind
DE10238089B4 (en) * 2002-08-21 2004-08-05 Warema Renkhoff Gmbh External blind with tape rolls
US6976522B2 (en) * 2003-05-21 2005-12-20 Springs Window Fashions Lp Venetian blind ladder drum and method of assembling venetian blind
US20050081463A1 (en) * 2003-10-17 2005-04-21 Richard Allen Retractable screen system providing a positioning force for a movable sash
US20060196614A1 (en) * 2005-03-03 2006-09-07 Springs Window Fashions Lp Window shade
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Also Published As

Publication number Publication date
JPH02501713A (en) 1990-06-14
DE3800631A1 (en) 1989-06-29
FI893734A0 (en) 1989-08-08
FI87040B (en) 1992-08-14
US5092382A (en) 1992-03-03
WO1989005603A1 (en) 1989-06-29
DE3800631C2 (en) 1990-10-25
JPH0754B2 (en) 1995-01-11
ES2012906A6 (en) 1990-04-16
EP0372004A1 (en) 1990-06-13
FI87040C (en) 1992-11-25

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