EP1771311A1 - Roller blind system - Google Patents

Roller blind system

Info

Publication number
EP1771311A1
EP1771311A1 EP05769866A EP05769866A EP1771311A1 EP 1771311 A1 EP1771311 A1 EP 1771311A1 EP 05769866 A EP05769866 A EP 05769866A EP 05769866 A EP05769866 A EP 05769866A EP 1771311 A1 EP1771311 A1 EP 1771311A1
Authority
EP
European Patent Office
Prior art keywords
roller blind
toothed belt
blind system
gear
winding tube
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.)
Withdrawn
Application number
EP05769866A
Other languages
German (de)
French (fr)
Inventor
Manuel Eiselt
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.)
Webasto SE
Original Assignee
Webasto SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Webasto SE filed Critical Webasto SE
Publication of EP1771311A1 publication Critical patent/EP1771311A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
    • B60J7/0007—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs moveable head-liners, screens, curtains or blinds for ceilings
    • B60J7/0015—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs moveable head-liners, screens, curtains or blinds for ceilings roller blind
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/20—Accessories, e.g. wind deflectors, blinds
    • B60J1/2011—Blinds; curtains or screens reducing heat or light intensity
    • B60J1/2013—Roller blinds
    • B60J1/2019—Roller blinds powered, e.g. by electric, hydraulic or pneumatic actuators
    • B60J1/2027—Roller blinds powered, e.g. by electric, hydraulic or pneumatic actuators with a buckle-proof guided flexible actuating element acting on the draw bar for pushing or push-pulling, e.g. a Bowden cable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/20—Accessories, e.g. wind deflectors, blinds
    • B60J1/2011—Blinds; curtains or screens reducing heat or light intensity
    • B60J1/2013—Roller blinds
    • B60J1/2033—Roller blinds characterised by the spring motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/20—Accessories, e.g. wind deflectors, blinds
    • B60J1/2011—Blinds; curtains or screens reducing heat or light intensity
    • B60J1/2013—Roller blinds
    • B60J1/2036—Roller blinds characterised by structural elements
    • B60J1/2058—Springs for compensating the number of windings of the blind on the tube in case winding tube and draw bar are driven together

Definitions

  • the present invention relates to a roller blind system according to the preamble of claim 1.
  • a generic roller blind system is known for example from DE 198 34 777 C2.
  • the roller blind disclosed therein has a roller blind, one end of which is fastened to a winding tube and the other end of which is provided with a draw bar.
  • the roller blind is wound on a winding tube, which coaxially receives a central winding shaft, which is connected to the winding tube via a torsion spring to ensure a constant torque between the winding tube and winding shaft and thus a constant bias of the roller blind for all extract positions of Rollo ⁇ .
  • the roller blind furthermore has a drive device with a bending and pressure-resistant drive element, preferably a tension- and pressure-resistant drive cable, which engages on the pull bar of the roller blind and moves it.
  • the drive element rotates the winding shaft and the winding tube at the same rotational speed.
  • a drive cable may alternatively be provided a rack or a toothed belt, which drives the winding shaft via a gear which meshes with the rack.
  • DE 19844 779 C1 discloses a roller blind system in which a conventional pressure-resistant threaded cable is used as the preferred displacement element for displacing a roller blind.
  • a toothed belt or rack arrangement is mentioned, but without reference to more details. th how to make such a toothed belt or rack assembly is received.
  • DE 101 55 167 A1 discloses a sunshade roller blind arrangement for a vehicle roof, in which the winding shaft is connected via a connecting gear to a drive shaft of a drive motor arranged coaxially with the winding shaft.
  • the drive motor may comprise a planetary gear, which is connected via a toothed belt with the winding shaft.
  • DE 32 11 467 A1 discloses an opening system for a sliding roof for motor vehicles in which in known manner for moving the sunroof a drive unit is provided, the rotatable output pinion two acting on both sides of the sunroof cover tensile and pressure-resistant output elements in opposite directions drives.
  • toothed belts which are accommodated in a slide-resistant manner are provided in a slide rail.
  • a disadvantage of the previously known solutions for driving roller blinds is that due to the flexurally rigid drive cable or rigid toothed rack or closed, circulating toothed belt, a large installation space is necessary to move these elements in the x-direction (vehicle longitudinal axis) and / or z - accommodate direction (vertical axis). In the case of long extension lengths of the roller blinds, increased friction also results due to the drive element in the guide rail, which leads to an increased expenditure of force for moving the roller blinds.
  • the present invention seeks to provide a roller blind of the type mentioned, in which On the one hand the necessary installation space is as small as possible and on the other hand, a movement of the blinds with the lowest possible expenditure of force and high com fort is allowed.
  • the deflection of a toothed belt according to the invention about a toothed wheel can be carried out with substantially smaller radii than in previously known roller blind systems with a deflected or wound tension- and pressure-resistant drive cable.
  • the solution according to the invention furthermore offers the advantage that, in contrast to previously known solutions with toothed racks, not only one tooth of the toothed wheel is in engagement, but the toothed wheel can engage in the toothed belt over a very large area of its circumference, which reduces the noise and further noticeably improves the quality impression.
  • the material expenditure is also reduced (only one deflection).
  • the use of meterware for the timing belt can achieve cost reductions because the same timing belts can be cut for different roofs.
  • FIG. 1 is a schematic, perspective view of a roller blind system according to the invention.
  • FIG. FIG. 2 is a side view of the shade system of FIG. 1 along the vehicle's longitudinal axis.
  • FIG. 1 shows a roller blind system according to the invention for moving a roller blind (not shown here), which is mounted so that it is fastened at one end to a rotatably mounted winding tube 10, which is only indicated schematically here.
  • the other end of the roller blind is connected to a pull bar 14, which is displaceably mounted by means of a guide rail 38.
  • a winding shaft 12 In ⁇ within the winding tube 10 is centrally located a winding shaft 12 which is connected to the winding tube only via a torsion spring 16.
  • the winding shaft is inserted into a star engagement 36, which in turn is in communication with a gear 20.
  • This toothed wheel 20 engages in an open, flexible and in a guide rail 30 drucksteif ge stored and displaceable toothed belt 18 a.
  • the second toothed belt end 24 is connected by means of a connection 26 to the pull bar 14 of the roller blind system.
  • the roller blind is mounted so that it communicates with its front edge with the Switzerlandspriegel 14 and with its rear edge with the winding tube 10 in conjunction.
  • the tension of the roller blind can be adjusted via a pretension of the torsion spring 16, which connects the winding tube 10 and the winding shaft 12. If the Switzerlandspriegel 14 and with him the roller blind pulled by hand or by means of an electric motor, so turns on the one hand the roller blind the winding tube 10 and on the other hand, the toothed belt 18 via the gear 20, the winding shaft 12. If the rotation paths of winding tube 10 and winding shaft 12 are the same, while the torsion spring 16 remains in its original state initial state of tension. Thus, the torsion spring 16 can be adjusted so that it holds the roller blind in a desired tension. In contrast to systems without additional, movable winding shaft, however, this does not allow the roller blind to snap back when the pull bow 14 is released. Thus, the roller blind system remains in any desired position without additional holding devices.
  • the gearwheel 20 is selected to be greater than the diameter of the winding shaft 12 including the completely wound roller blind, the winding shaft and the gearwheel are rotated at different rotational speeds due to the different diameters when the roller blind is pulled out (for example by pulling on the drawbar 14 manually) , Since the gear 20 is connected to the winding shaft 12, thus a relative movement between see the winding tube 10 of the winding shaft 12 forced, which provided between the winding tube 10 and the winding shaft 12 torsion spring 16 on the "basic tension" in the unwound state of the blinds When opening the roller blind (ie when winding the same), this additional tension is used to compensate for the higher actuation forces required when the roller blind is fully extended.
  • FIG. FIG. 2 shows a side view of the guide rails 30 and 38 of toothed belt 18 and tension bow 14, the latter being guided in its guide rail 38 by means of a slider 34.
  • the toothed belt 18 is guided in its guide rail 30 about the gear 20 so that a deflection of approximately 180 ° is realized.
  • the guide rail 30 of the toothed belt 18 serves to make the flexible, open (ie finite and not closed or circulating) toothed belt pressure-resistant. This compressive rigidity is necessary because, unlike a rotating toothed belt, the timing belt 18 is not only loaded on train, but also on pressure.
  • the guide rail 30 is preferably provided with a deflection guide 28 in the region of the toothed wheel 20.
  • the material of the deflection guide 28 must be designed for the lowest possible friction coefficient, which is why here POM (polyoxymethylene) with a proportion of PTFE (Teflon, polytetrafluoroethylene) or with a silicone component has proven ..
  • the connection 26, which as he ⁇ mentions the connection between the toothed belt 18 and the drawbar 14 represents molded onto the timing belt, or be pressed with him, welded or glued. Preferably, it has a tooth or lattice shape, in which the teeth of the toothed belt 18 can engage.

Abstract

The present invention concerns a roller blind system for a vehicle, comprising a roll of fabric, one end of which is attached to a roller tube (10) and the other end of which is connected to a tensioning hoop (14), and also comprising a coaxial roller shaft (12) that is accommodated in the roller tube and is connected thereto by way of a torsion spring (16), a drive device being provided for actuating the roll of fabric, said drive device comprising a gearwheel (20) that is coaxially connected to the roller shaft and a toothed belt (18) that is connected to the tensioning hoop. According to the invention, the toothed belt is an open, flexible toothed belt (18) which is guided so that it is rigid against pressure in a guide rail (30) and which has a first toothed belt end (24) which is connected to the tensioning hoop (14) and a second toothed belt end which is turned around the gearwheel (20) in the direction of the first toothed belt.

Description

Rollosystem window treatment
Die vorliegende Erfindung betrifft ein Rollosystem gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a roller blind system according to the preamble of claim 1.
Ein gattungsgemäßes Rollosystem ist beispielsweise aus der DE 198 34 777 C2 bekannt. Der dort offenbarte Rollo weist eine Rollobahn auf, deren eines Ende an einem Wickelrohr befestigt ist und deren anders Ende mit einem Zugspriegel versehen ist. Die Rollobahn ist auf ein Wickelrohr aufgewickelt, welches koaxial eine zentrale Wickelwelle aufnimmt, die mit dem Wickelrohr über eine Torsionsfeder verbunden ist, um für alle Auszugstellungen der Rollo¬ bahn ein konstantes Drehmoment zwischen Wickelrohr und Wickelwelle und damit eine konstante Vorspannung der Rollobahn zu gewährleisten. Der Rollo weist femer eine Antriebsvorrichtung auf mit einem biege- und drucksteifen An¬ triebselement, vorzugsweise einem zug- und drucksteifen Antriebskabel, wel¬ ches am Zugspriegel des Rollos angreift und diesen bewegt. Das Antriebsele¬ ment dreht bei einer Bewegung der Rollobahn die Wickelwelle und das Wickel¬ rohr mit der gleichen Drehgeschwindigkeit. Anstelle eines Antriebskabels kann alternativ eine Zahnstange oder ein Zahnriemen vorgesehen sein, welche über ein Zahnrad, das mit der Zahnstange kämmt, die Wickelwelle antreibt.A generic roller blind system is known for example from DE 198 34 777 C2. The roller blind disclosed therein has a roller blind, one end of which is fastened to a winding tube and the other end of which is provided with a draw bar. The roller blind is wound on a winding tube, which coaxially receives a central winding shaft, which is connected to the winding tube via a torsion spring to ensure a constant torque between the winding tube and winding shaft and thus a constant bias of the roller blind for all extract positions of Rollo¬. The roller blind furthermore has a drive device with a bending and pressure-resistant drive element, preferably a tension- and pressure-resistant drive cable, which engages on the pull bar of the roller blind and moves it. During a movement of the roller blind, the drive element rotates the winding shaft and the winding tube at the same rotational speed. Instead of a drive cable may alternatively be provided a rack or a toothed belt, which drives the winding shaft via a gear which meshes with the rack.
Die DE 19844 779 C1 offenbart ein Rollosystem, bei dem zur Verschiebung eines Rollos ein übliches drucksteifes Gewindekabel als bevorzugtes Verschie¬ beelement verwendet wird. Als Alternative hierzu ist auch eine Zahnriemen- oder Zahnstangenanordnung erwähnt, ohne dass jedoch auf nähere Einzelhei- ten, wie eine solche Zahnriemen- oder Zahnstangenanordnung zu gestalten wäre, eingegangen wird.DE 19844 779 C1 discloses a roller blind system in which a conventional pressure-resistant threaded cable is used as the preferred displacement element for displacing a roller blind. As an alternative to this, a toothed belt or rack arrangement is mentioned, but without reference to more details. th how to make such a toothed belt or rack assembly is received.
In der DE 101 55 167 A1 ist eine Sonnenschutz-Rolloanordnung für ein Fahr¬ zeugdach offenbart, bei der die Wickelwelle über ein Verbindungsgetriebe mit einer koaxial zur Wickelwelle angeordneten Abtriebswelle eines Antriebsmotor verbunden ist. Anstelle eines Verbindungsgetriebes kann der Antriebsmotor ein Planetengetriebe aufweisen, das über einen Zahnriemen mit der Wickelwelle verbunden ist.DE 101 55 167 A1 discloses a sunshade roller blind arrangement for a vehicle roof, in which the winding shaft is connected via a connecting gear to a drive shaft of a drive motor arranged coaxially with the winding shaft. Instead of a connecting gear, the drive motor may comprise a planetary gear, which is connected via a toothed belt with the winding shaft.
In der DE 32 11 467 A1 ist ferner ein Öffnungssystem für ein Schiebedach für Kraftfahrzeuge offenbart, bei dem in an sich bekannter Weise zur Verlagerung des Schiebedachdeckels eine Antriebseinheit vorgesehen ist, deren drehbares Abtriebsritzel zwei an beide Seiten des Schiebedachdeckels angreifende zug- und drucksteife Abtriebselemente gegenläufig antreibt. Anstelle der sonst ge¬ bräuchlichen Antriebskabel sind in einer Gleitschiene druckfest untergebrachte Zahnriemen vorgesehen.In DE 32 11 467 A1 discloses an opening system for a sliding roof for motor vehicles is disclosed in which in known manner for moving the sunroof a drive unit is provided, the rotatable output pinion two acting on both sides of the sunroof cover tensile and pressure-resistant output elements in opposite directions drives. Instead of the otherwise common drive cables, toothed belts which are accommodated in a slide-resistant manner are provided in a slide rail.
Nachteilig an den bisher bekannten Lösungen zum Antrieb von Rollos ist, dass aufgrund der verwendeten biegesteifen Antriebskabel oder starren Zahnstan¬ gen oder geschlossenen, umlaufenden Zahnriemen ein großer Bauraum not¬ wendig ist, um diese Elemente in x-Richtung (Fahrzeuglängsachse) und/oder z- Richtung (Vertikalachse) unterzubringen. Bei langen Auszugslängen des Rollos entsteht ferner durch das Antriebselement in der Führungsschiene eine erhöhte Reibung, die zu einem erhöhten Kraftaufwand zur Bewegung des Rollos führt. Weiterhin steht bei den bekannten Lösungen mit Zahnstange und Zahnrad im¬ mer nur ein Zahn des Zahnrads in vollständigem Eingriff mit der Zahnstange, was einerseits zu erhöhtem Geräusch führt und andererseits der Bediener beim Betätigen des Rollos auch spüren kann und somit einen qualitativ schlechten Eindruck hinterlässt.A disadvantage of the previously known solutions for driving roller blinds is that due to the flexurally rigid drive cable or rigid toothed rack or closed, circulating toothed belt, a large installation space is necessary to move these elements in the x-direction (vehicle longitudinal axis) and / or z - accommodate direction (vertical axis). In the case of long extension lengths of the roller blinds, increased friction also results due to the drive element in the guide rail, which leads to an increased expenditure of force for moving the roller blinds. Furthermore, in the known solutions with a toothed rack and toothed wheel, only one tooth of the toothed wheel is in complete engagement with the toothed rack, which on the one hand leads to increased noise and on the other hand the operator can also feel when the roller blind is actuated and thus leaves a poor quality impression.
Angesichts dieses Standes der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Rollo der eingangs genannten Art zu schaffen, bei dem einerseits der notwendige Einbauraum möglichst klein ist und andererseits eine Bewegung des Rollos mit möglichst geringem Kraftaufwand und hohem Kom¬ fort erlaubt wird.In view of this prior art, the present invention seeks to provide a roller blind of the type mentioned, in which On the one hand the necessary installation space is as small as possible and on the other hand, a movement of the blinds with the lowest possible expenditure of force and high com fort is allowed.
Diese Aufgabe wird durch ein Rollosystem gemäß Anspruch 1 gelöst.This object is achieved by a roller blind system according to claim 1.
Bei der erfindungsgemäßen Lösung ist vorteilhaft, dass durch die Verwendung eines flexiblen, offenen, d.h. nicht geschlossenen, sondern endlichen Zahnrie¬ mens als drucksteifes Antriebselement sowie die Umlenkung dieses Zahnrie¬ mens um das Zahnrad herum, was somit über einen kleinen Radius erfolgen kann, der benötigte Bauraum sehr klein gehalten wird. Insbesondere entfällt hierbei der Platz, der sonst nötig ist, um bei nicht biegsamen Antriebselementen wie Zahnstangen oder steifen Antriebskabeln das Auslaufende des Elements aufzunehmen. Dies reduziert den Bauraum entlang der Fahrzeuglängsachse (x- Richtung). Auch in vertikaler Richtung (z-Richtung) ist die Einbautiefe deutlich reduziert, da entlang des Verschiebewegs des Rollos der Zahnriemen zwar doppelt geführt ist, jedoch mit geringerem Abstand als bei Systemen mit zwei Zahnrädern und umlaufendem Zahnriemen. Die erfindungsgemäße Umlenkung eines Zahnriemens um ein Zahnrad kann mit wesentlich kleineren Radien durchgeführt werden als bei bisher bekannten Rollosystemen mit einem umge¬ lenkten oder aufgewickelten zug- und drucksteifen Antriebskabel. Die erfin¬ dungsgemäße Lösung bietet weiterhin den Vorteil, dass im Gegensatz zu bis- her bekannten Lösungen mit Zahnstangen nicht nur ein Zahn des Zahnrads im Eingriff steht, sondern das Zahnrad über einen sehr großen Bereich seines Um- fangs in den Zahnriemen eingreifen kann, was die Geräuschentwicklung redu¬ ziert und ferner den Qualitätseindruck spürbar verbessert. Im Vergleich zu Sys¬ temen mit umlaufendem Zahnriemen wird ferner der Materialaufwand reduziert (nur eine Umlenkung). Darüber hinaus lassen sich durch die Verwendung von Meterware für den Zahnriemen Kostensenkungen erzielen, da die gleichen Zahnriemen für unterschiedliche Dächern zugeschnitten werden können.In the solution according to the invention it is advantageous that by using a flexible, open, i.e. not closed, but finite Zahnrie¬ mens as a pressure-rigid drive element and the deflection of this Zahnrie¬ mens around the gear around, which can thus be done over a small radius, the space required is kept very small. In particular, this eliminates the space that is otherwise necessary to accommodate the outlet end of the element in non-flexible drive elements such as racks or rigid drive cables. This reduces the installation space along the vehicle longitudinal axis (x-direction). Even in the vertical direction (z-direction), the installation depth is significantly reduced, as along the displacement of the roller blind, the toothed belt is indeed performed twice, but with a smaller distance than in systems with two gears and rotating timing belt. The deflection of a toothed belt according to the invention about a toothed wheel can be carried out with substantially smaller radii than in previously known roller blind systems with a deflected or wound tension- and pressure-resistant drive cable. The solution according to the invention furthermore offers the advantage that, in contrast to previously known solutions with toothed racks, not only one tooth of the toothed wheel is in engagement, but the toothed wheel can engage in the toothed belt over a very large area of its circumference, which reduces the noise and further noticeably improves the quality impression. In comparison to systems with a circulating toothed belt, the material expenditure is also reduced (only one deflection). In addition, the use of meterware for the timing belt can achieve cost reductions because the same timing belts can be cut for different roofs.
Weitere bevorzugte Ausführungsformen der Erfindung ergeben sich aus den Unteransprüchen. Im Folgenden wird die Erfindung anhand der Zeichnungen beispielhaft näher erläutert; dabei zeigen:Further preferred embodiments of the invention will become apparent from the dependent claims. In the following the invention will be explained in more detail by way of example with reference to the drawings; show:
FIG. 1 eine schematische, perspektivische Ansicht eines erfindungsge¬ mäßen Rollosystems; undFIG. 1 is a schematic, perspective view of a roller blind system according to the invention; and
FIG. 2 eine Seitenansicht des Rollosystems von FIG. 1 entlang der Fahr- zeuglängsachse.FIG. FIG. 2 is a side view of the shade system of FIG. 1 along the vehicle's longitudinal axis.
FIG. 1 zeigt ein erfindungsgemäßes Rollosystem zur Bewegung einer Rollobahn (hier nicht abgebildet), die so montiert wird, dass sie mit einem Ende an einem drehbar gelagerten Wickelrohr 10 befestigt ist, welches hier nur schematisch angedeutet ist. Das andere Ende der Rollobahn ist mit einem Zugspriegel 14 verbunden, der mittels einer Führungsschiene 38 verschiebbar gelagert ist. In¬ nerhalb des Wickelrohrs 10 befindet sich zentral eine Wickelwelle 12, die mit dem Wickelrohr nur über eine Torsionsfeder 16 verbunden ist. Im gezeigten Ausführungsbeispiel ist die Wickelwelle ist in einen Sterneingriff 36 eingesteckt, der wiederum mit einem Zahnrad 20 in Verbindung steht. Dieses Zahnrad 20 greift in einen offenen, flexiblen und in einer Führungsschiene 30 drucksteif ge¬ lagerten und verschiebbaren Zahnriemen 18 ein. Während ein Ende des Zahn¬ riemens 18 lose ist, ist das zweite Zahnriemenende 24 mittels einer Anbindung 26 mit dem Zugspriegel 14 des Rollosystems verbunden. Die Rollobahn ist so montiert, dass sie mit ihrer Vorderkante mit dem Zugspriegel 14 und mit ihrer Hinterkante mit dem Wickelrohr 10 in Verbindung steht.FIG. 1 shows a roller blind system according to the invention for moving a roller blind (not shown here), which is mounted so that it is fastened at one end to a rotatably mounted winding tube 10, which is only indicated schematically here. The other end of the roller blind is connected to a pull bar 14, which is displaceably mounted by means of a guide rail 38. In¬ within the winding tube 10 is centrally located a winding shaft 12 which is connected to the winding tube only via a torsion spring 16. In the illustrated embodiment, the winding shaft is inserted into a star engagement 36, which in turn is in communication with a gear 20. This toothed wheel 20 engages in an open, flexible and in a guide rail 30 drucksteif ge stored and displaceable toothed belt 18 a. While one end of the toothed belt 18 is loose, the second toothed belt end 24 is connected by means of a connection 26 to the pull bar 14 of the roller blind system. The roller blind is mounted so that it communicates with its front edge with the Zugspriegel 14 and with its rear edge with the winding tube 10 in conjunction.
Da der Zugspriegel 14 wie beschrieben über den Zahnriemen 18 mit der Wi¬ ckelwelle 12 verbunden ist, kann über eine Vorspannung der Torsionsfeder 16, welche Wickelrohr 10 und Wickelwelle 12 verbindet, die Spannung der Rollo¬ bahn eingestellt werden. Wird der Zugspriegel 14 und mit ihm die Rollobahn von Hand oder mittels eines Elektromotors ausgezogen, so dreht einerseits die Rollobahn das Wickelrohr 10 und andererseits der Zahnriemen 18 über das Zahnrad 20 die Wickelwelle 12. Sofern die Rotationswege von Wickelrohr 10 und Wickelwelle 12 gleich sind, bleibt dabei die Torsionsfeder 16 in ihrem ur- sprünglichen Spannungszustand. Damit kann die Torsionsfeder 16 so einge¬ stellt werden, dass sie die Rollobahn in einer gewünschten Spannung hält. Im Gegensatz zu Systemen ohne zusätzliche, bewegliche Wickelwelle lässt diese beim Loslassen des Zugspriegels 14 die Rollobahn jedoch nicht zurückschnal¬ zen. Somit bleibt das Rollosystem in jeder gewünschten Position ohne zusätzli- che Haltevorrichtungen stehen.Since the tension bow 14 is connected to the helical shaft 12 via the toothed belt 18 as described, the tension of the roller blind can be adjusted via a pretension of the torsion spring 16, which connects the winding tube 10 and the winding shaft 12. If the Zugspriegel 14 and with him the roller blind pulled by hand or by means of an electric motor, so turns on the one hand the roller blind the winding tube 10 and on the other hand, the toothed belt 18 via the gear 20, the winding shaft 12. If the rotation paths of winding tube 10 and winding shaft 12 are the same, while the torsion spring 16 remains in its original state initial state of tension. Thus, the torsion spring 16 can be adjusted so that it holds the roller blind in a desired tension. In contrast to systems without additional, movable winding shaft, however, this does not allow the roller blind to snap back when the pull bow 14 is released. Thus, the roller blind system remains in any desired position without additional holding devices.
Entsprechend der Auszuglänge der Rollobahn entsteht durch den Zahnriemen 18 in der Führungsschiene 30 eine zusätzliche Reibung, die beim Zurückschie¬ ben des Zugspriegels 14 mittels zusätzlicher Kraft überwunden werden muss. Wird der Durchmesser des Zahnrads 20 größer gewählt als der Durchmesser der Wickelwelle 12 einschließlich der komplett aufgewickelter Rollobahn, so werden beim Ausziehen des Rollos (beispielsweise durch manuelles Ziehen am Zugspriegel 14) die Wickelwelle und das Zahnrad aufgrund der unterschiedli¬ chen Durchmesser mit unterschiedlichen Drehzahlen gedreht. Da das Zahnrad 20 mit der Wickelwelle 12 verbunden ist, wird somit eine Relativbewegung zwi- sehen dem Wickelrohr 10 der Wickelwelle 12 erzwungen, welche die zwischen dem Wickelrohr 10 und der Wickelwelle 12 vorgesehene Torsionsfeder 16 über die „Grundspannung" in nicht ausgezogenem Zustand des Rollos hinaus spannt, und zwar umso stärker, je größer der Verschiebeweg ist. Beim Öffnen des Rollos (d.h. beim Aufwickeln desselben) wird diese zusätzliche Spannung genutzt, um die bei komplett ausgezogenem Rollo erforderlichen höheren Betä¬ tigungskräfte zu kompensieren.According to the extension length of the roller blind, an additional friction is created by the toothed belt 18 in the guide rail 30, which must be overcome by means of additional force when the pull lever 14 is pushed back. If the diameter of the gearwheel 20 is selected to be greater than the diameter of the winding shaft 12 including the completely wound roller blind, the winding shaft and the gearwheel are rotated at different rotational speeds due to the different diameters when the roller blind is pulled out (for example by pulling on the drawbar 14 manually) , Since the gear 20 is connected to the winding shaft 12, thus a relative movement between see the winding tube 10 of the winding shaft 12 forced, which provided between the winding tube 10 and the winding shaft 12 torsion spring 16 on the "basic tension" in the unwound state of the blinds When opening the roller blind (ie when winding the same), this additional tension is used to compensate for the higher actuation forces required when the roller blind is fully extended.
FIG. 2 zeigt eine Seitenansicht auf die Führungsschienen 30 und 38 von Zahn¬ riemen 18 und Zugspriegel 14, wobei letzterer mittels eines Gleiters 34 in seiner Führungsschiene 38 geführt ist. Wie hier gezeigt ist, ist der Zahnriemen 18 in seiner Führungsschiene 30 um das Zahnrad 20 so herumgeführt, dass eine Umlenkung um ca. 180° realisiert wird. Die Führungsschiene 30 des Zahnrie¬ mens 18 dient dabei dazu, den flexiblen, offenen (d.h. endlichen und nicht ge¬ schlossenen bzw. umlaufenden) Zahnriemen drucksteif zu machen. Diese Drucksteifigkeit ist notwendig, da anders als bei einem umlaufenden Zahnrie- men der Zahnriemen 18 nicht nur auf Zug, sondern auch auf Druck belastet wird.FIG. FIG. 2 shows a side view of the guide rails 30 and 38 of toothed belt 18 and tension bow 14, the latter being guided in its guide rail 38 by means of a slider 34. As shown here, the toothed belt 18 is guided in its guide rail 30 about the gear 20 so that a deflection of approximately 180 ° is realized. The guide rail 30 of the toothed belt 18 serves to make the flexible, open (ie finite and not closed or circulating) toothed belt pressure-resistant. This compressive rigidity is necessary because, unlike a rotating toothed belt, the timing belt 18 is not only loaded on train, but also on pressure.
Um bei der 180°-Umlenkung die Reibungskräfte in Grenzen zu halten, ist die Führungsschiene 30 im Bereich des Zahnrads 20 vorzugsweise mit einer Um¬ lenkführung 28 ausgestattet. Das Material der Umlenkführung 28 muss dabei auf eine möglichst geringe Reibzahl ausgelegt werden, weshalb sich hier POM (Polyoximethylen) mit einem Anteil an PTFE (Teflon, Polytetrafluorethylen) oder mit einem Silikon-Anteil bewährt hat.. Die Anbindung 26, die wie bereits er¬ wähnt die Verbindung zwischen dem Zahnriemen 18 und dem Zugspriegel 14 darstellt, kann an den Zahnriemen angespritzt, oder mit ihm verpresst, ver- schweißt oder verklebt sein. Vorzugsweise hat sie eine Zahn- oder Gitterform, in welche die Zähne des Zahnriemens 18 eingreifen können. In order to limit the frictional forces during the 180 ° deflection, the guide rail 30 is preferably provided with a deflection guide 28 in the region of the toothed wheel 20. The material of the deflection guide 28 must be designed for the lowest possible friction coefficient, which is why here POM (polyoxymethylene) with a proportion of PTFE (Teflon, polytetrafluoroethylene) or with a silicone component has proven .. The connection 26, which as he ¬ mentions the connection between the toothed belt 18 and the drawbar 14 represents molded onto the timing belt, or be pressed with him, welded or glued. Preferably, it has a tooth or lattice shape, in which the teeth of the toothed belt 18 can engage.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
10 Wickelrohr10 winding tube
12 Wickθlwelle12 Wickθlwelle
14 Zugspriegel14 drawbar
16 Torsionsfeder16 torsion spring
18 Zahnreimen18 dental rhymes
20 Zahnrad20 gear
24 zweites Zahnriemenende24 second toothed belt end
26 Anbindung26 connection
28 Umlenkführung28 deflection guide
30 Führungsschiene30 guide rail
32 Abdeckung32 cover
34 Gleiter34 gliders
36 Sterneingriff36 star intervention
38 Führungsschiene 38 guide rail

Claims

Ansprüche claims
1. Rollosystem für ein Fahrzeug mit einer Rollobahn, deren eines Ende an einem Wickelrohr (10) befestigt ist und deren anderes Ende mit einem Zugspriegel (14) verbunden ist, mit einer in dem Wickelrohr aufgenomme¬ nen koaxialen Wickelwelle (12), die mit dem Wickelrohr über eine Torsi¬ onsfeder (16) verbunden ist, wobei eine Antriebsvorrichtung zur Betäti¬ gung der Rollobahn vorgesehen ist, die ein koaxial mit der Wickelwelle verbundenes Zahnrad (20) sowie einen mit dem Zugspriegel in Verbin- düng stehenden Zahnriemen (18) aufweist, dadurch gekennzeichnet, dass als Zahnriemen ein offener, flexibler Zahnriemen (18) vorgesehen ist, der in einer Führungsschiene (30) drucksteif geführt ist und ein erstes Zahnriemenende (24) aufweist, das mit dem Zugspriegel (14) verbunden ist, sowie ein zweites Zahnriemenende, das um das Zahnrad (20) in Rich- tung auf das erste Zahnriemenende umgelenkt ist.1. roller blind system for a vehicle with a roller blind, one end of which is attached to a winding tube (10) and the other end is connected to a Zugspriegel (14), with a aufgenomme¬ in the winding tube nen coaxial winding shaft (12) with the winding tube via a Torsi¬ onsfeder (16) is connected, wherein a drive device for Betäti¬ tion of the roller blind is provided, which coaxially connected to the winding shaft gear (20) and a standing with the Zugspriegel in connection düng toothed belt (18) characterized in that the toothed belt as an open, flexible toothed belt (18) is provided, which is guided in a guide rail (30) pressure-rigid and a first toothed belt end (24) which is connected to the Zugspriegel (14), and a second toothed belt end, which is deflected about the gear (20) in the direction of the first toothed belt end.
2. Rollosystem gemäß Anspruch 1 , dadurch gekennzeichnet, dass der Zahn¬ riemen (18) um einen Winkel zwischen 170° und 270° um das Zahnrad (20) umgelenkt ist.2. Roller blind system according to claim 1, characterized in that the Zahn¬ belt (18) is deflected by an angle between 170 ° and 270 ° to the gear (20).
3. Rollosystem gemäß Anspruch 2, dadurch gekennzeichnet, dass der Zahn- riemen (18) um einen Winkel von näherungsweise 180° um das Zahnrad3. Roller blind system according to claim 2, characterized in that the toothed belt (18) by an angle of approximately 180 ° about the gear
(20) umgelenkt ist.(20) is deflected.
4. Rollosystem gemäß einem der vorhergehenden Ansprüche, dadurch ge¬ kennzeichnet, dass der Zugspriegel (14) manuell bewegbar ist.4. Roller blind system according to one of the preceding claims, characterized ge indicates that the pull bar (14) is manually movable.
5. Rollosystem gemäß Anspruch 1 bis 3, dadurch gekennzeichnet, dass ein Elektromotor zum Bewegen des Zugspriegels (14) vorgesehen ist. 5. Roller blind system according to claim 1 to 3, characterized in that an electric motor for moving the Zugspriegels (14) is provided.
6. Rollosystem gemäß einem der vorhergehenden Ansprüche, dadurch ge¬ kennzeichnet, dass der Durchmesser des Zahnrads (20) größer ist als der Durchmesser des Wickelrohrs (10) inklusive der komplett aufgewickelten Rollobahn.6. Roller blind system according to one of the preceding claims, characterized ge indicates that the diameter of the gear (20) is greater than the diameter of the winding tube (10) including the completely wound roller blind.
7. Rollosystem gemäß einem der vorhergehenden Ansprüche, dadurch ge- kennzeichnet, dass der Zugspriegel (14) mit dem Zahnriemen (18) über eine Anbindung (26) verbunden ist, welche an den Zahnriemen gespritzt, gepresst, geschweißt oder geklebt ist.7. Roller blind system according to one of the preceding claims, character- ized in that the Zugspriegel (14) with the toothed belt (18) via a connection (26) is connected, which is injection-molded, pressed, welded or glued to the toothed belt.
8. Rollosystem gemäß einem der vorhergehenden Ansprüche, dadurch ge¬ kennzeichnet, dass der Zahnriemen (18) durch eine Umlenkführung (28) um das Zahnrad (20) umgelenkt wird.8. Roller blind system according to one of the preceding claims, characterized ge indicates that the toothed belt (18) by a deflection guide (28) is deflected around the gear (20).
9. Rollosystem gemäß Anspruch 8, dadurch gekennzeichnet, dass die Um¬ lenkführung aus Polyoximethylen (POM) mit einem Anteil Polytetrafluor- ethylen (PTFE) oder Silikon besteht. 9. roller blind system according to claim 8, characterized in that the Um¬ steering guidance of polyoxymethylene (POM) with a proportion of polytetrafluoroethylene (PTFE) or silicone.
EP05769866A 2004-07-27 2005-07-25 Roller blind system Withdrawn EP1771311A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004036392A DE102004036392A1 (en) 2004-07-27 2004-07-27 window treatment
PCT/DE2005/001319 WO2006012856A1 (en) 2004-07-27 2005-07-25 Roller blind system

Publications (1)

Publication Number Publication Date
EP1771311A1 true EP1771311A1 (en) 2007-04-11

Family

ID=35149305

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US (1) US20070215299A1 (en)
EP (1) EP1771311A1 (en)
CN (1) CN101065263A (en)
DE (1) DE102004036392A1 (en)
WO (1) WO2006012856A1 (en)

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WO2006012856A1 (en) 2006-02-09
US20070215299A1 (en) 2007-09-20
DE102004036392A1 (en) 2006-03-23
CN101065263A (en) 2007-10-31

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