WO2017162364A1

WO2017162364A1 - Roller blind and motor vehicle comprising such a roller blind

Info

Publication number: WO2017162364A1
Application number: PCT/EP2017/052975
Authority: WO
Inventors: Sebastian Fuchs; Thomas Stampe
Original assignee: Volkswagen Aktiengesellschaft
Priority date: 2016-03-24
Filing date: 2017-02-10
Publication date: 2017-09-28
Also published as: DE112017001448B4; DE112017001448A5; DE102016204926A1

Abstract

What is proposed is, inter alia, a roller blind (4) for a motor vehicle (1), with a roller blind web (6) wound up on a winding shaft (5), and with a pull-out profile (9) fastened to the free end of the roller blind web (6). The pull-out profile (9) is mounted at both ends in displaceably guided guide elements (10, 11) so as to be rotatable about an axis of rotation (19) extending in the longitudinal direction of the pull-out profile (9). An end side (27) of said pull-out profile has a first contour (28) which corresponds to a complementarily designed second contour (29) of a vehicle headliner (30). The pull-out profile (9) is mounted rotatably on the guide elements (10, 11) in such a manner, and the roller blind web (6) is fastened to the pull-out profile (9) in such a manner that, starting from a first operating position (16) of the pull-out profile (9), said pull-out profile undergoes a rotational movement (35) as a result of forces "F1", "F2" of the winding shaft (5) and of a drive (18) that act on the pull-out profile (9) in a different direction during a displacement movement (34) towards the vehicle headliner (30).

Description

description

Roller blind and motor vehicle with such a roller blind

The invention relates to a roller blind, in particular a window roller blind, for a motor vehicle according to the preamble of patent claim 1 of the invention. According to claim 12 of the invention further relates to a motor vehicle with such a roller blind.

From DE 10 2005 006 102 A1 discloses a roller blind with a wound on a reel by means of a spring-type spring motor wound winding shaft or wound up roller blind and with an attached at the free end of the roller blind extension rod is known. Of the

Extending rod is designed to be elastic in adaptation to a contoured, for example spherically formed edge region of an opening to be covered by means of the roller blind or a window to be covered. When wound roller blind, the pull-out rod in its rest position on a straight line Strak and is embedded, for example, in a shaft of a so-called hat rack of a motor vehicle. To transfer the roller blind in their opening or the window covering functional position of the pull-out rod is manually grasped and out against the spring force of the winding shaft to the winding shaft opposite edge region of the opening or the window and fixed there.

DE 10 2005 052 618 A1 describes a rear window roller blind of a motor vehicle with a dimensionally stable, straight pull-out rail and a contour plate arranged on the same. The contour plate serves to create a segment-shaped residual gap between the straight

Pull-out rail and a curved upper edge of the rear window to close.

Starting from a so-called retracted position of the contour plate velvet

Pull-out rail and connected roller blind, in which the contour plate is flush with the parcel shelf, performs the contour plate together with the pull-out rail during an electrically operated extension movement a relative movement to the parcel shelf such that the contour plate rises by about 90 ° and in a fully extended operating position or Functional position conforms to the curved upper edge of the rear window. This movement is controlled by a curved course of guide rails, in which the composite of contour plate and pull-out rail is guided displaceably and non-rotatably at both ends. The forward and backward drive of said composite takes place by means of the guide rails guided slider, which in turn are operatively connected via a respective thrust member with an electric motor. The said thrust members consist for example of a flexible cylindrical core and a coil thereon, which in turn forms a revolving tooth, which is in engagement with a pinion of the electric motor. The winding shaft is also operated by means of a spring motor. The curved course of the guide rails is associated with an increased material and cost.

DE 10 2007 058 262 A1 describes a guide system for a vehicle roller blind, which guide system comprises at least one guide rail with a guide groove and at least one sliding element displaceable in the guide rail, on which sliding element an extension element formed with a contour plate together with the roller blind of the vehicle roller blind can be attached. The guide rails should have as straight as possible a course. On the sliding element, a pin which can be connected in a rotationally fixed manner to the pullout element is pivotably mounted about an axis arranged transversely to a direction of displacement. When moving the sliding element in the guide rail, the pin is guided along the guide groove. At the guide groove designed as a stop deflecting profile is formed. When reaching the stop of the pin is complete with the connected

Extract element with contour plate relative to the sliding element about the said axis

pivoted so that the contour plate conforms to the complementarily shaped contour of the sky of the vehicle. According to an alternative disclosed in this document, the guide rail has a guide groove on which a deflecting profile designed as a toothed profile is formed. On the sliding element a pin is rotatably mounted. The pin is at least partially designed with a spur gear toothing, wherein the spur gear toothing is designed to be complementary to the tooth profile. By moving the pin on the tooth profile, the teeth engage with each other, whereby the pin is rotated together with the connected pullout element with contour plate such that the contour plate is located on the complementary contour of the sky

Vehicle hugs. In particular, the latter two measures

As far as pivoting or twisting of an extension element with contour plate is concerned, these are associated with increased technical and cost expenditure.

From JP 2010-215138 A a roller blind for a motor vehicle with a wound up on a winding roller blind is known, in which the winding shaft is subjected to a force in the take-up with a winding force generated by a coil spring. At the free end of the roller blind a pull-out profile, here referred to as Lichtabschirmplatte, attached, which pull-out profile mediating a so-called frame both ends on or in Guideways of the motor vehicle is guided displaceably. The pull-out profile is pivotally mounted on the frame and spring-loaded by means of a torsion spring. According to the

described principle of action is the applied force of the winding shaft or their

Coil spring act against the applied force of the torsion spring. Thereafter, when pulling out of the roller blind, the force of the coil spring should increase, so that the extension profile is placed against the spring force of the torsion spring. If instead the roller blind retracted or wound up, the applied force of the coil spring should decrease, with the result that the spring force of the torsion spring gains the upper hand and the extension profile is pivoted to the frame as a result of said spring force of the torsion spring.

The object of the invention is to provide a roller blind, in particular a window roller blind, for a motor vehicle, which in terms of the prior art by means of simple and

cost-effective measures a twisting of a pull-out profile allows a longitudinal axis along the same axis of rotation. Furthermore, it is the object of the invention to provide a

To provide motor vehicle with such a roller blind.

Starting from a roller blind, in particular a window roller blind, for a motor vehicle, with a wound up on a winding shaft or windable roller blind, which winding shaft in the winding direction with a winding force "F- kraftbeaufschlagt, and with an attached at the free end of the roller blind pull-out profile in which the extension profile is rotatably mounted on guide elements displaceably guided on or in guideways of the motor vehicle about an axis of rotation extending in the longitudinal direction of the extension profile and by means of a drive against the winding force "F" of the winding shaft with a shifting force "F ₂ " along the guideways of a first operating position or rest position of

Pull-out profile is displaceable toward a sky of the motor vehicle and there occupies a second operating position or functional position, the pull-out profile having a first end face with a first contour corresponding to a complementarily shaped second contour of the sky of the motor vehicle, and resulting in a rotational movement of the Excerpt profile around said axis of rotation is the extract profile in the second

Operating position or functional position conforms with its first contour to the complementary formed second contour of the sky, this object is achieved in that the pull-out profile rotatably mounted on the guide elements and the roller blind is attached to the pull-out profile such that starting from the first

Operating position or rest position of the extract profile the same during the

Moving movement towards the sky of the motor vehicle due in different directions on the pull-out profile acting forces "FT," F2 "of the winding shaft and the drive said rotary motion undergoes.

By this measure, additional, associated with increased technical complexity mechanical elements for rotating or pivoting the pull-out profile, as they are favored according to the prior art (DE 10 2007 058 262 A1), dispensable. At least substantially by skillful connection anyway existing means, namely on the one hand in the winding kraftbeaufschlagten roller blind and the other acting linearly along the guideways drive on Auszugsprofil the desired rotational movement of the same and in consequence a position of the pull-out profile causes said nestling of the Extract profile with its first contour to the complementary formed second contour of the sky allows. Clinging is understood to be a position of the extension profile to the sky, in which a conventionally recorded gap between the first and the second contour is at least reduced, but preferably substantially reduced or even closed.

The subclaims describe preferred developments or refinements of the invention.

Thereafter, it is preferably provided that, seen in cross section of the extension profile, the axis of rotation of the extension profile closer to the first end of the extension profile is arranged as an attachment point of the blind on the extension profile, resulting in a leverage on

Extensible profile results, which causes said rotational movement about the axis of rotation. According to a first possible, particularly simple and inexpensive variant of the

Invention, the pull-out profile on both ends ever a stub axle and is rotatably mounted by means of the same in each of a stub shaft receiving the relevant guide element. According to a preferred second embodiment of the invention, the pull-out profile is rotatably mounted on both ends on a laterally projecting extension of the relevant guide element. This preferred embodiment has the advantage over the previously described that a particularly robust and accordingly stable guide element is created here with the smallest dimensions. In a further development of this second embodiment variant, each extension has a form-locking means which corresponds to a counter-form-closure means assigned to the extension profile. Preferably, the positive locking means and the counter-form-locking means form a releasable bayonet closure, whereby on the one hand a mounting position and on the other hand a functional position of the pull-out profile to the relevant guide element are effected. By this measure are a particularly simple and cost-effective installation and disassembly of the pull-out profile on or from the guide element allows. A mechanically simple and functionally reliable embodiment of the invention results from the fact that the positive locking means is formed by a part-annular web geometry, whereas the counter-form-locking means is formed by a part-annular groove geometry, which merges into a clearance. The rotatable bond between the

Guide element and the extension profile is achieved by the interlocking means is inserted axially with its part-annular geometry in said clearance and subsequently the positive locking means is inserted into the counter-form-locking means in the form of part-annular groove geometry by relative rotation of the guide element and extension profile. It goes without saying for the person skilled in the art that the said groove geometry at least detects the turning or swiveling range of the extension profile relative to the guide element.

Regardless of the above embodiment of the invention, the pull-out profile can also be rotatably mounted at both ends mediating a respective retaining cap on the relevant guide element, in which case the retaining cap has said axle stub or the said counter-form-locking element or forms. As a result, a simple and cost-effective way is created, in adaptation to an example of

Vehicle down to vehicle-up tapering spacing between lateral

Limiting parts of / s to be covered by the roller blind opening or a window to represent a telescoping of the composite of holding cap and pull-out profile. Of course, a telekopierbare training of the pull-out profile itself is also covered by the invention. In order to ensure a proper operation of the blinds and a defined rotational position of the same, preferably the rotational movement of the

Exception profiles limiting end stops provided. More preferably said end stops are provided on the guide elements. What the first front of the

As far as the excerpts from the first contour and the complementarily formed contour of the sky of the motor vehicle are concerned, according to a preferred embodiment they are convex or cambered.

The invention also relates to a motor vehicle with a roller blind, in particular a window roller blind, of the type described above.

The invention will be explained in more detail with reference to the embodiments schematically illustrated in the drawings. However, it is not limited to these, but covers all embodiments defined by the claims. Show it:

Fig. 1 is a rear view of a roller blind according to the invention, in particular with a Window roller blind, equipped motor vehicle, with the roller blind in a

Rest position respectively whose roller blind is in a non-extended position,

2 extremely schematically the roller blind in a functional position,

3 extremely schematically the roller blind according to FIG. 2 in a side view with the illustration of FIG

Adjustment kinematics thereof (view "A" of Fig. 2),

4 shows a guiding element displaceably guided in a guideway of the motor vehicle according to a preferred embodiment of the invention, and

5 shows the view "B" of Fig. 4th

Fig. 1 shows first the rear view of a motor vehicle 1, in this case one

Passenger car, which / r has a tailgate 2 with a rear window 3. Said rear window 3 is associated with a disk roller blind 4 shown schematically in FIGS. 2 and 3.

According to FIGS. 2 and 3, the roller blind 4 has a flexible roller blind 6 wound up or wound up on a winding shaft 5. The roller blind 6 can be formed, for example, by a knitted fabric, a net, a film or the like. More. The winding shaft 5 is according to this

Embodiment arranged below a so-called, serving as a cover for a trunk hat rack 7 and preferably rotatably attached to the same. It thus extends in the vehicle transverse direction (Y direction). The winding shaft 5 is in

Winding-up direction 8 is subjected to force by means of a spring motor, which is known per se, with a take-up force "F-1." A spring motor is understood to be a drive element which, by means of at least one not illustrated drawing

Spring element, in particular by means of at least one coil spring, is operated. Starting from the said winding shaft 5, the roller blind 6 in the present case is guided through a slot-shaped passage opening, not shown in the drawing, of the rear shelf 7.

At the free end of the roller blind 6 a largely dimensionally stable extension profile 9 is fixed, which accordingly also extends in the vehicle transverse direction (Y-direction). The extension profile 9 is at both ends by means of a respective guide element 10, 1 1 guided on or in body-mounted guideways 12, 13 slidably. The guide elements 10, 1 1 have a torpedo-like shape according to this embodiment. The

Guideways 12, 13 are indicated in the present case only by a dotted line and preferably by C-pillars 14, 15 of the motor vehicle 1 and not diagrammatically illustrated interior panels formed the same. More preferably, the guideways 12, 13 formed in a straight line with the advantage of a short displacement.

2 and 3 also show the guide elements 10, 1 1 in a first operating position 16 or rest position of the roller blind 4 or its extract profile 9 (dashed lines of the guide elements 10, 1 1) and in a second operating position 17 or functional position of the Roller blinds 4 or its extract profile 9 (solid lines of the

Guide elements 10, 1 1). The guide elements 10, 1 1 are each a in Figs. 5 and 6 indicated, linear along the guideways 12, 13 acting drive 18 assigned. Said drive 18 is preferably operated by means of an electric motor not shown in the drawing, which a certain displacement force "F ₂ " on the drive 18 together with the connected guide elements 10, 1 1 and the extension profile 9 along the

Guideways 12, 13 applies. The drive 18 consists, for example, based on the prior art of a flexible cylindrical core and a coil thereon, which in turn forms a revolving tooth, which is in engagement with a pinion of the electric motor.

As can also be seen in particular from FIG. 3, the extension profile 9 is rotatably mounted on the guide elements 10, 11 about a rotation axis 19 extending in the longitudinal direction of the extension profile 9, in the vehicle transverse direction (Y direction). According to a first embodiment of the invention shown in Fig. 3, the pull-9 for this purpose both ends a stub axle 20 which is rotatably received by a stub axle 21 of the respective guide member 10, 1 1. This is preferably a sliding bearing, for example, by a self-lubricating

Plastic bearing is formed.

In contrast, FIG. 4 shows a preferred pivot bearing for the pull-out profile 9 on the relevant guide element 10, 1 1. The pivot supports each have one for

Pull-out profile 9 toward laterally projecting extension 22 on which the pull-9 is rotatably mounted under the mediation of a respective retaining cap 23. Each extension 22 forms a positive locking means 24 in the form of a part-annular web geometry (FIGS. 4, 5). This web geometry corresponds to a counter-form-locking means 25 on the associated holding cap 23 in the form of a part-annular groove geometry, which merges into a clearance not shown in the drawing. In the assembly of guide element 10, 1 1 and associated retaining cap 23, said web geometry is positively received by the groove geometry (see Fig .. 4). As a result, the positive-locking means 24 and the counter-form-locking means 25 form a detachable bayonet closure, whereby on the one hand a mounting position and on the other a functional position of the extension profile 9 to the relevant guide element 10, 1 1 are effected. The rotatable bond between the guide element 10, 1 1 and the extension profile 9 is achieved by the positive locking means 24 is inserted axially with its part-annular web geometry in said clearance and subsequently by relative rotation of

Guide element 10, 1 1 and extract profile 9, the positive locking means in the

Counter-form-locking means is inserted in the form of the part-annular groove geometry. It goes without saying for the person skilled in the art that the said groove geometry covers at least the turning or swiveling range of the pull-out profile 9 relative to the guide element 10, 11.

4, at least one retaining cap 23 is designed to be relatively displaceable relative to the extension profile 9 (see directional arrow 26), whereby a telescopic action is created which, during a displacement of the extension profile 9 in the vehicle vertical direction (Z direction), adapts the composite Holding caps 23 and extension profile 9 to a, for example, from vehicle-down to vehicle-top changing, present tapered spacing between the guideways 12, 13 allowed.

2, the pull-out profile 9 has a convex or cambered first contour 28 on a first end face 27, in this case on the front side 27 facing the vehicle. This first contour 28 is associated with a complementarily formed second contour 29 of a sky 30 of the motor vehicle 1. In the first operating position 16 or rest position of the extension profile 9 shown in FIG. 3, the same lies flat with a bearing surface 31 on a floor 32 of a depression 33 formed in the rear shelf 7. The convex or cambered first end face 27 points towards the vehicle front or in the direction of travel of the motor vehicle 1. If the electromechanically operated pull-out profile 9 together with the connected roller blind 6 is transferred to the second operating position 17 or functional position, it is desirable that the pull-out profile 9 with its convex or convex contoured end face 27 conforms to the complementarily formed contour 29 of the sky 30 of the motor vehicle 1 ie, approaches such a degree that a conventionally recorded gap between the first and the second contour 28, 29 is at least reduced, but preferably substantially reduced or even closed. This is made possible by the extension profile 9 during the displacement movement 34 of the same from the first to the second operating position 16, 17 undergoes a rotational movement 35 about the rotation axis 19 such that the extension profile 9 so to speak convex or convex contoured end face 27 sets up to the complementarily formed contour 29 of the sky 30 out.

This rotational movement 35 is effected substantially by leverage such that on the one hand the axis of rotation 19 of the extension profile 9 closer to the convex or cambered end face 27 of the extension profile 9 is arranged as an attachment point 36 of the shade 6 on the extension profile 9, and that on the other during the displacement movement 34 to the sky 30 of the motor vehicle 1 toward the pull-out profile 9 acting forces "Fi", "F ₂ " of the winding shaft 5 and the drive 18 in different, namely at least substantially in opposite directions act (see Fig. 2 and 3 ). In view of this, the distance between the axis of rotation 19 of the extension profile 9 and the end face 27 of the extension profile 9 is denoted by "ST, for better understanding of the present case to be registered effective principle in Fig. 3, whereas the distance between the attachment point 39 of the shade 6 on the extension profile. 9 and the end face 27 of the extension profile is designated 9, with "S _2". It is understood by those skilled in the art without saying that the smaller due to the winding shaft 5 on the extension profile 9 applied winding and restoring-force "F than that of the electric motor including drive 18 applied shift force "F ₂ " is selected. That is, the extension profile 9 is due to the connected blind sheet 6 during the displacement of the extension profile 9 along the guideways 12, 13 to the sky 30 against the applied by the spring motor, at least substantially oppositely directed winding or restoring force "FT moved. The rotational movement 35 of the extension profile 9 is preferably limited by means of, for example, arranged on the guide elements 10, 1 1 end stops 37 to ensure a defined rotational position of the extension profile 9 (Fig. 3).

If the extension profile 9 together with the connected roller blind 6 are returned to the first operating position 16 or rest position, the electric motor is correspondingly reversed. During the electromechanical return movement 38 of the pull-out profile 9, the roller blind 6 is wound on the winding shaft 5 by means of said spring motor and retains the moved-back pull-out profile 9 initially in its erected position. However, as soon as the pull-out profile 9 strikes against the second shelf 39 on the rear shelf 7, exactly on the floor 32 of the sink 33 of the shelf shelf 7, with one of the convex or convexly contoured first end face 27 and during the return movement 38, the pull-out profile 9 becomes progressive as a result Return movement 38 pivoted about a turning axis in the region of the second end face 39 and finally with its support surface 31 on the parcel shelf 7, more precisely on the said bottom 32 of the sink 33 of the parcel shelf 7, filed. LIST OF REFERENCE NUMBERS

Motor vehicle 25 Counter-form-locking means

Tailgate 26 directional arrow

Rear window 27 first end face (pull-out profile 9)

Roller blind, in particular disc roller blind 28 first contour (excerpt profile 9)

Winding shaft 29 second contour (sky 30)

Roller blind 30 skies

Parcel shelf 31 support surface (extract profile 9)

Winding direction 32 bottom (sink 33)

Excerpt profile 33 sink (rear shelf 7)

Guide element 34 Displacement movement

Guide element (extract profile 9)

Guideway 35 Rotational movement (excerpt profile 9)

Guideway 36 attachment point

C-pillar 37 End stop

C-pillar 38 Return movement (extension profile 9) First operating position 39 Second end side (extension profile 9) Second operating position "For winding-up force

Drive "F ₂ " shift force

Rotary axis "S-T distance

Stub axle (axis of rotation 19 / face 27)

Axle stump "S2" distance

Extension (attachment point 39 / front side 27)

retaining cap

Fit means

Claims

claims

Roller blind (4), in particular window roller blind (4), for a motor vehicle (1), with a roller blind (6) wound or windable on a winding shaft (5), which winding shaft (5) is arranged in the take-up direction (8) with a winding roller. Force "Fi" is subjected to force, and with a at the free end of the roller blind (6) fixed pull-out profile (9), wherein the pull-out profile (9) at both ends on or in guideways (12, 13) of the motor vehicle (1) slidably guided guide elements (10 , 1 1) rotatably mounted about an axis of rotation (19) extending in the longitudinal direction of the extension profile (9) and by means of a drive (18) against the winding force "F-ι" of the winding shaft (5) with a displacement force "F ₂ "along the guideways (12, 13) from a first operating position (16) or rest position of the pull-out profile (9) to a sky (30) of the motor vehicle (1) is displaced toward and assumes a second operating position (17) or functional position, the pull-out profile (9) a first end face (27) having a first contour (28), which is formed with a complementary formed second contour (29) of the sky (30) of

Motor vehicle (1) corresponds, and resulting from a rotational movement (35) of the pull-out profile (9) about said axis of rotation (19), the pull-out profile (9) in the second operating position (17) or functional position with its first contour (28) to the Complementarily formed second contour (29) of the sky (30) conforms, characterized in that the pull-out profile (9) is rotatably mounted on the guide elements (10, 1 1) and the roller blind (6) is attached to the pull-out profile (9) in that, starting from the first operating position (16) or rest position of the pull-out profile (9), the forces "Fi" acting during the displacement movement (34) towards the sky (30) of the motor vehicle (1) result in different directions on the pull-out profile (9). , "F ₂ " of the winding shaft (5) and the drive (18) said rotational movement (35) experiences.

Roller blind (4) according to the preceding claim, characterized in that viewed in cross-section of the pull-out profile (9), the axis of rotation (19) of the pull-out profile (9) closer to the first end face (27) of the pull-out profile (9) is arranged as a

Fixing point (36) of the roller blind (6) on the extension profile (9), resulting in a leverage on the extension profile (9) results, said rotational movement (35) about the axis of rotation (19) causes.

3. Roller blind (4) according to one of the preceding claims, characterized in that the pull-out profile (9) both ends each have a stub axle (20) and by means of the same in a stub axle receptacle (21) of the relevant guide element (10, 1 1) is rotatably mounted.

4. Roller blind (4) according to claim 1 or 2, characterized in that the pull-out profile (9) both ends on a laterally projecting extension (22) of the relevant

Guide element (10, 1 1) is rotatably mounted.

5. Roller blind (4) according to claim 4, characterized in that each extension (22) a

Has positive engagement means (24) which corresponds to a the Auszugsprofil (9) associated counter-form-locking means (25).

6. Roller blind (4) according to claim 5, characterized in that the positive locking means (24) and the counter-form-locking means (25) form a detachable bayonet closure, whereby on the one hand a mounting position and on the other hand, a functional position of the pull-out profile (9) to the respective guide element (10 , 1 1) are effected.

7. Roller blind (4) according to claim 5 or 6, characterized in that the positive locking means (24) is formed by a part-annular web geometry, whereas the

Counter-form-fitting means (25) is formed by a part-annular groove geometry, which merges into a clearance.

8. roller blind (4) according to one of claims 3 to 7, characterized in that the

Pull-out profile (9) at both ends by mediating a respective retaining cap (23) on the relevant guide element (10, 1 1) is rotatably mounted, in which case the retaining cap (23) has said stub axle (20) or said Gegenformschlusselement (25) or forms ,

9. roller blind (4) according to any one of the preceding claims, characterized in that the pull-out profile (9) or the composite of the pull-out profile (9) and the two ends arranged retaining caps (23) is telescopic.

10. Roller blind (4) according to one of the preceding claims, characterized in that the rotational movement (35) of the extension profile (9) limiting end stops (37) are present.

1 1. Roller blind (4) according to one of the preceding claims, characterized in that the rotational movement (35) of the pull-out profile (9) solely as a result of different directions on the pull-out profile (9) acting forces "F", "F ₂ " of the winding shaft (5) and the drive (18) is effected.

12. Roller blind (4) according to one of the preceding claims, characterized in that the pull-out profile (9) in the first operating position (16) or rest position on a

Hat rack (7) of the motor vehicle (1) rests.

13. Roller blind (4) according to one of the preceding claims, characterized in that the first end face (27) has a first contour (28), which is formed convex or convex.

14. Motor vehicle (1) with a roller blind (4), in particular a window roller blind (4), according to

one of the preceding claims.