DE102007021049B4 - Roller blind device, in particular for a sunroof system - Google Patents

Abstract

Roller blind device, in particular for a sunroof system comprising a roller blind (3), which by means of a winding device at least one end winding core to a roller blind (12) is wound, wherein the winding device at least one blind roller (3) connected constant force spring (10) and a take-up element (20 ) for the constant force spring (10), characterized in that the takeup element (20) is rotatably mounted about a winding axis (23), wherein at least one or more winding aids (14) are present and are formed such that at least in a portion of the Rollowickels (12) of this oval in cross-section is flattened wound up.

Description

The The invention relates to a roller blind device according to the preamble of Claim 1.

From the DE 20 2005 006 415 U1 an assembly with a roller blind is known, which has a flexible roller blind. At the longitudinal edges of the flexible roller blind constant force springs are arranged, which in the developed state have an arcuate cross section and are pressed flat in the wound state (constant force springs in the manner of a metal tape measure). The roller blind can be wound winding core free to a roller blind, wherein a winding projection is provided, around which the constant force spring can wind up automatically. Supporting this purpose take-up aids are provided which guide the constant-force spring. The disadvantage of this assembly is that when pulling / unwinding of the roller blind a constriction of the still wound Konstantkraftfedern can take place and as a result, blocking or sluggishness of the roller blind when unwinding can occur. This disadvantage should be avoided.

From the EP 1 584 509 A2 is a roller blind for a sunroof system also known with a constant force spring. The constant force spring is anchored at its free end in a winding shaft. In this known roller blind is disadvantageous that by the provision of a winding shaft a cross-sectional ent long the Rollowickels different spatial form in the rolled state is not or only to an insufficient extent feasible.

From the US 5,170,830 is a collapsible sunblind known in which a coil spring by means of a rotatable about a bolt winding element is wound.

From the GB 828,358 is known a sliding mechanism for sliding windows, which is equipped with a windable spring.

From the FR 2 779 474 is a bent along a winding axis windable roll-up known.

From the WO 2006/053 520 A2 is a windable roller blind element is known which has reinforcements at its longitudinal edges, which can slide in guide rails.

From the EP 1 495 888 a sunshade assembly for a vehicle roof is known, wherein a roller blind randlich a perforation strip, in the transport pins of a transport device drivingly engage.

task The invention is, on the one hand, a generic blind device such to develop that a light and pinch-free unwinding of the blind is ensured. Furthermore, a roller blind device is specified that make it possible to have different ones To make cross-sectional shapes along a Rollowickels representable.

These Tasks are with a roller blind device with the Merk paint the Claim 1 solved. advantageous embodiments are in the subclaims specified.

The inventive solution, the Winding element of a roller blind rotatable about a winding axis to store, also provides for a constant force spring, which at her winding end not firmly connected to the take-up is easy to unroll safely, since the take-up in the case of a binding The coiled constant force spring can easily rotate. Provided a trimming does not take place, the take-up can also stand still.

In order to different cross-sectional shapes are possible along a roller blind, is provided according to the invention, that at least one or more winding aids are present and are shaped such that at least in a portion of the Rollowickels this is flattened in cross-section oval flattened.

Around a defined co-rotation of the winding element when a Zuschnürung To ensure the constant force spring, it is appropriate that Store the take-up element in a clamping manner, so that starting from a certain Breakaway torque is made possible a rotation of the take-up about its winding axis.

When a possible embodiment the take-up offers a bolt on the side Piece above the Rollowi ckel sticking out and the Rollowickel in its edge area outsourced.

A another embodiment used as a take-up a sleeve, which rotatably with respect to a Bolt is mounted, the bolt is mounted fixed to the vehicle. In particular, in this embodiment is a defined breakaway torque by selecting the fit between sleeve and Bolt or, for example, by the introduction of defined Reibflüssigkeiten, such as As silicones or fats, adjustable.

Farther is appropriate it, that the bolt is arranged only in the edge region of the roller blind is and the Rollowickel by the way is formed hub-free and winding core is wound up.

According to one further advantageous embodiment are about a length the Rollowickels distributed spaced from the constant force springs at least one or more winding aids arranged exclusively with the roller blind interact. By a different shape the individual winding aids, which in particular approximately in cross section U or semicircular or semi-elliptical are formed, can the cross-sectional shape of the roller blind in the wound state over the Length influenced become. For example, a flattening of the Rollowickels achieved by suitable shaping of the winding aids be so that minimizing the space in the vehicle vertical direction in the area of the passenger compartment, for example in the area above the Passenger heads, can be achieved.

Farther It is particularly advantageous, the winding aids over the length of the roller blind 3-dimensional contoured, in particular arcuate or domed to arrange, so that the roller blind web to a winding core-free arcuate Rollowickel wound up is.

Farther it is advantageous, the constant force spring at its the take-up associated end not to be firmly connected to this or at this to anchor, as this causes the free rolling of the constant force spring is facilitated without the take-up be moved got to.

Appropriate way is the winding axis of the take-up to an imaginary arcuate winding axis the Rollowickels tangentially aligned. As a result, an arcuate training the Rollowickels supported.

Advantageous is further that the winding element a collar or a collar owns, so a guided Winding the constant force spring is guaranteed and this can roll up without offset or almost offset in their layers.

in the The invention will be explained in more detail by way of example with reference to the figures. It demonstrate:

1 a roller blind device according to the invention in a perspective plan view;

2 : An isometric schematic detail view of an end of a roller blind of the roller blind device according to the invention with a take-up element.

A roller blind device according to the invention 1 is in 1 represented, wherein the blind device 1 as a prototype in a presentation frame 2 is mounted for the purpose of demonstrations. In real use is the roller blind device 1 selbstver course in a vehicle roof, for example, to cover a sunroof opening, installed. The roller blind device 1 has a roller blind 3 , which has a front edge pointing forwards in the vehicle longitudinal direction 4 and lateral boundary edges 5 . 6 has. In the area of the front edge 4 can be a bounding bar 7 be arranged, which with sliding carriage 8th communicates. The sliding carriages 8th are expedient manner in guideways 9 or guide rails 9 slidably mounted.

The roller blind 3 owns in the area of their lateral boundary edges 5 . 6 or directly adjacent to these boundary edges 5 . 6 along these boundary edges 5 . 6 Constant force springs 10 , which are preferably formed of a spring steel and in a developed state have a cross-sectionally arcuate spatial form. In a wound state, the space-form curved in the cross-section can be pressed flat, so that a cylindrical winding of the constant force spring 10 is possible. Because the constant force spring 10 is made of a spring steel and is made biased accordingly, this has a tendency to wind itself from one end. This effect is exploited to the required spring force to wind up the roller blind 3 at a rear end in the vehicle longitudinal direction 11 to a roller blind 12 applied.

In the roller blind device according to the invention 1 is along the Rollowickels 12 in a vehicle transverse direction 13 a variety of wrapping aids 14 intended. The winding aids 14 are formed, for example, as upwardly open clip-like receiving elements, which have a cross-sectionally substantially U-shaped spatial form. Inside this U-shaped room form sufficient space is provided so that the roller blind 3 completely to the Rollowickel 12 can be wound up and enough space is available for this. The winding aids 14 are for example on a body part 15 , which a roof contour in the vehicle transverse direction 13 arcuately follows, arranged and up, in a vehicle vertical direction 16 , open. Through the open area of the winding aids 14 can the roller blind 3 enter and exit. The roller blind device 1 features in the area of the roller blind 12 about no hub and is only through the body part 15 and / or the winding aids 14 guided. At lateral ends 17 of the roller blind 12 is each a take-up 20 provided on which the constant force spring 10 is windable.

It is also appropriate, the winding aids 14 z. B. form as integrated areas of a plastic part.

In an embodiment according to 2 is the winding element 20 a sleeve 21 which turn bar on a bolt 22 is stored. The bolt 22 has a bolt center axis 23 (Winding axis 23 ), which in the area of the ends 17 tangential to a Rollomittelachse the Rollowickels 12 , which may optionally be curved, is aligned. The bolt 22 owns a storage groove 24 with which the bolt 22 is stored body-fixed. At a Rollowickel 12 facing end has the bolt 22 a collar 25 , where the collar 25 in a plan view of the Rollowickel 12 adjacent to the winding plane of the constant force spring 10 is arranged and a guide for the constant force spring 10 during winding represents, so that an exact winding of the constant force spring 10 correctly aligned one above the other is ensured.

According to a further embodiment (not shown), the sleeve 21 as a winding element 20 also omitted and the bolt 22 even as a winding element 20 act. In this case, the bolt 22 expedient manner around the pin central axis 23 rotatably mounted with respect to the vehicle.

Appropriately, the winding element 20 in the event of a repair easily releasably stored in the vehicle and / or attached, in particular clipend, latching or the like attached.

Essential for the invention is that the winding element 20 , So in the described embodiments, the sleeve 21 and / or the bolt 22 to an axis 23 is rotatable, so that when removing the roller blind 3 from the Rollowickel 12 a co-rotation of the take-up 20 is ensured, even if as in the examples described expediently a free end of the constant force spring 10 not fixed to the take-up element 20 is anchored. The reason for this is that when removing the blind 3 from the Rollowickel 12 a Zuschnüektekt in the area of the still wound constant force spring 10 can occur, which can lead to a binding and / or even to blocking. This binding or blockage is avoided when the take-up element 20 is rotatably mounted.

The in the vehicle transverse direction 13 over the length of the roller blind 12 arranged winding aids 14 can have different cross-sectional space shapes, so that for example those winding aids 14 which are adjacent to the longitudinal edges 5 . 6 the roller blind 3 are arranged, for example, have a substantially round cross-sectional shape, so that the wound roller blind 3 or the roller blind 12 receives a substantially cylindrical spatial form in these areas. Preferably in the middle region (in the vehicle transverse direction 13 seen) can the winding aids 14 one in cross section, in vehicle vertical direction 16 , flattened spatial form, z. B. have a el liptische, oval or the like flattened spatial form, so that the winding core-free roller blind 12 in this area receives a flattened shape in the wound form. This allows a space optimization in the vehicle vertical direction in this area 16 be achieved, since the roller blind 12 in this area in vehicle vertical direction 16 flattened. This makes it possible to achieve sufficient headroom for passengers.

The invention is characterized by good operability, by a cost-effective design and a minimal space requirement. In particular, the fact is exploited to obtain the space advantages that a winding core-free roller blind 12 At least in some areas a flattened or more generally expressed receives a deviating from a cylindrical spatial form spatial form, so that space advantages can be realized.

Furthermore, it is advantageous that a Zuschnüektekt and thus a stiffness and / or blocking of the blind 3 when pulling or pulling off the roller blind 12 is reliably prevented.

1

net device

2

presentation framework

3

blind web

4

leading edge

5

lateral boundary edge

6

lateral boundary edge

7

boundary strip

8th

Sliding carriage

9

guide rails

10

Constant force springs

11

rear end of 3

12

Rollo winding

13

Vehicle transverse direction

14

winding aids

15

body part

16

Vehicle vertical direction

17

lateral end up

20

takeup

21

shell

22

bolt

23

Bolt central axis

24

bearing groove

25

collar

Claims (11)

Roller blind device, in particular for a sliding roof system comprising a roller blind ( 3 ), which by means of a winding device at least one end winding core to a roller blind ( 12 ), wherein the winding device at least one with the roller blind ( 3 ) connected constant force feather ( 10 ) and a winding element ( 20 ) for the constant force spring ( 10 ), characterized in that the winding element ( 20 ) about a winding axis ( 23 ) is rotatably mounted, wherein at least one or more winding aids ( 14 ) are present and are shaped such that at least in a partial region of the roller blind ( 12 ) This oval in cross section is flattened wound up. Roller blind device according to claim 1, characterized in that the winding element ( 20 ) a bolt ( 22 ). Roller blind device according to claim 1, characterized in that the winding element ( 20 ) a sleeve ( 21 ) which is rotatable with respect to the bolt ( 22 ) is mounted and the bolt ( 22 ) is mounted on the vehicle. Roller blind device according to one of the preceding claims, characterized in that the bolt ( 22 ) in the edge region of a roller blind ( 12 ) is arranged and the roller blind ( 12 ) is otherwise formed winding core. Roller blind device according to one of the preceding claims, characterized in that the winding aids ( 14 ) over a length of the roller blind ( 12 ) spaced apart from the constant force springs ( 10 ) are arranged, which exclusively with the roller blind ( 3 ) interact. Roller blind device according to one of the preceding claims, characterized in that the winding aids ( 14 ) over the length of the roller blind ( 12 ) Are 3-dimensionally contoured, in particular arc-shaped or curved, so that the roller blind ( 3 ) to a winding core-free arcuate roller blind ( 12 ) can be wound up. Roller blind device according to one of the preceding claims, characterized in that the constant force spring ( 10 ) at its the winding element ( 20 ) end not fixed in the take-up element ( 20 ) is anchored. Roller blind device according to one of the preceding claims, characterized in that the winding axis ( 23 ) to an imaginary arcuate winding axis of the roller blind ( 12 ) is aligned tangentially. Roller blind device according to one of the preceding claims, characterized in that the winding element ( 20 ) a covenant ( 25 ) or a collar ( 25 ), so that the at least one constant-force spring ( 10 ) can be wound without offset or almost without offset. Roller blind device according to one of the preceding claims, characterized in that the winding element ( 20 ) releasably, in particular by means of a clip-locking connection, is connected to the vehicle. Roller blind device according to one of the preceding Claims, characterized in that the winding element clamped about its winding axis is stored.