CN112888588A

CN112888588A - Roller blind assembly with pull canopy frame for roller blind

Info

Publication number: CN112888588A
Application number: CN201980070255.6A
Authority: CN
Inventors: J·施滕费尔斯; R·希尔特尔
Original assignee: Webasto SE
Current assignee: Webasto SE
Priority date: 2018-10-25
Filing date: 2019-10-21
Publication date: 2021-06-01
Also published as: DE102018126601A1; WO2020083818A1

Abstract

The invention relates to a roller blind arrangement for a motor vehicle, comprising a roller blind web (16) which can be rolled up to a roller blind (18) and is connected at its edge facing away from the roller blind (18) to a draw-off roof frame (20, 20'), which is provided on both sides with a sliding element (28, 42A, 42B) in each case with respect to a longitudinal center plane of the roller blind, said sliding element being guided in a corresponding guide rail (22A, 22B). The two slider elements (28, 42A, 42B) are held under stress in the guide rails (22A, 22B) in opposite rotational directions with respect to an axis extending in the lateral direction of the roller blind.

Description

Roller blind assembly with pull canopy frame for roller blind

Technical Field

The invention relates to a roller blind assembly for a motor vehicle having the features of the preamble of claim 1.

Background

Such roller blind assemblies are known from practice and comprise a roller blind web which can be unwound from a roller blind for screening a transparent top section of the associated vehicle or can be wound up into a roller blind roll for releasing the transparent top section, which roller blind roll can be formed on a winding shaft. The roller blind web is provided on its edge facing away from the roller blind with a pull-off frame for adjusting the roller blind web and is provided at its ends with respective slide elements which are guided in guide rails fixed to the roof. Two guide rails are arranged laterally to the transparent top section and extend parallel to the pull-out direction of the roller blind web. The slide elements of the traction canopy are each connected to a drive cable, which is driven by a drive motor. The slider element is thus a roller blind coupling, by means of which the roller blind is coupled to the drive motor. The slider elements which are each guided in the guide track of the associated guide rail can vibrate in the guide track, in particular in uneven road conditions, i.e. in the presence of hard excitation contours, due to tolerances, which can lead to rattling noises. This is undesirable.

Disclosure of Invention

The object of the present invention is to provide a roller blind assembly of the type mentioned at the outset, in which the rattling of the slider element in the guide rail is at least largely prevented.

According to the invention, this object is achieved by a roller blind assembly having the features of claim 1.

Thus, according to the invention, a roller blind assembly for a motor vehicle is proposed, which has a roller blind web with a pull-off roof frame which is guided on both sides in a guide rail by means of a respective slide element. The slider element is tensioned in the guide rail in particular in opposite rotational directions by means of corresponding spring means. Since the slider elements are guided under stress in the guide rails, the force required to move the traction canopy frame is not significantly increased compared to the above-mentioned conventional type of system. Losses due to wear of the slider element can also be compensated by the pretensioning force. I.e. the pretension causes an automatic adjustment of the slider element. Thus, over the service life of the roller blind assembly according to the invention, a permanent and permanent rattling-free sound can be achieved in the region of the slider elements guided in the guide rails.

In an advantageous embodiment of the roller blind assembly according to the invention, the traction canopy is made of a metal material and is therefore designed as a spring element or spring means which holds the two slider elements in the guide rail under stress in opposite rotational directions about an axis extending in the transverse direction of the roller blind. The traction canopy (the material of which has spring-elastic properties) is therefore used to exert a pretensioning force on the slider element or to resiliently support the slider element. Thus, no additional components are required in comparison with the known system described at the outset.

In particular, in the case of a metal material for the pulling of the canopy frame, the operational safety of the roller blind assembly can be ensured over a large temperature range. For example, steel or aluminum is used as a material for pulling the tent frame. The drawn-off canopy frame can then be configured as a rolled profile or an extruded profile.

In a preferred embodiment of the roller blind assembly according to the invention, the sliding block elements, which are in particular designed as one-piece injection-molded parts, each have a pin which projects from the sliding block body in the direction of the longitudinal center plane of the roller blind and is inserted into a recess of the draw-off canopy frame. Expediently, the recess of the awning frame is formed by a cavity of the awning frame, which is preferably designed as a hollow profile, which cavity runs through in the longitudinal direction of the awning frame. The slider body has a sliding surface, by means of which the slider element is guided in the associated guide rail.

In a special embodiment of the roller blind assembly according to the invention, the stresses acting on the slider element are generated by: the pulling canopy frame twists about a pulling canopy frame longitudinal axis. Due to twisting or torsion forces, the slider elements are guided in the two guide rails in a counter-oriented manner. Pulling the canopy frame exerts an opposing spring force on the slider element, the spring force being determined by the torque force.

In a further embodiment of the roller blind assembly according to the invention, the pin of the slider element engages in a torsion-proof manner in the profile cavity of the traction canopy frame forming the recess, so that the slider bodies are twisted relative to one another, viewed in the transverse direction of the roller blind.

In a special embodiment of the roller blind assembly according to the invention, the pins of the slider elements are aligned with each other and the slider bodies are twisted with respect to each other. The rotation of the slide bodies of the two slide elements relative to one another is therefore not achieved by means of a draw frame, which can be embodied as a straight profile, but by means of the slide elements themselves.

In many applications, the slider bodies are already effectively tensioned in the guide rail if they are twisted about 2 to 8 degrees, in particular about 6 degrees, relative to one another, as viewed in the transverse direction of the roller blind. For this range, the adjustment force required to displace the pulling canopy in the guide rail is moved within an acceptable range both in the case of manual drive and in the case of motorized drive. Depending on the application, it is also conceivable for the slide bodies to be twisted at a greater angle relative to one another.

A special embodiment of the roller blind assembly according to the invention is a side-guided roller blind, i.e. the roller blind web is provided with lateral guide strips which are each connected to one of the slider elements and are each guided in a guide rail. The lateral guide strip may be attached directly to the fabric or material of the rolling shutter web. For example, the guide strip is integrated into a so-called textile module which forms the side edge region of the roller blind web strip, which is attached to a central region forming the visible region of the roller blind web strip and which is optimally matched in terms of friction properties to the material of the guide rail.

The slider elements can be driven by drive cables, respectively, which can be actuated by a drive motor. The drive cable may be fixedly connected with the slider element. In this case, an actively driven slider element is involved, which is driven by the drive cable both when the roller blind is unwound and when it is wound up. Alternatively, the slider element can also be a passively driven coupling which is displaced by the projecting end of the drive cable in order to unwind the roller blind from the roller blind. Upon back-driving the drive cable, the roller blind web is automatically wound up into a roller blind roll by means of at least one roller spring. The pulling tent frame is pulled along with the pulling by the rolled spring. The roll spring may be integrated into the winding shaft. The roller spring can also be integrated in the form of a coil spring on the side edge of the roller blind web.

The roller blind assembly according to the invention can also be a manually operable roller blind, wherein the roller blind web is wound up or unwound by manually operating the pull canopy frame.

Further advantages and advantageous configurations of the inventive subject matter can be gathered from the description, the drawings and the claims.

Drawings

Two embodiments of a roller shutter assembly according to the invention are schematically shown in a simplified manner in the drawings and are further explained in the following description. The figures show:

FIG. 1 is a schematic top view of a vehicle roof having a roller shade assembly according to the present invention;

FIG. 2 is a perspective view of a front end region of the roller shade assembly;

FIG. 3 arrangement of slider elements of a traction canopy frame of a roller shade assembly in a guide rail;

FIG. 4a traction canopy frame without slider elements;

FIG. 5 is a perspective view of an alternative embodiment of a draw tent having slider elements;

FIG. 6 is a perspective view of a slider element of the traction canopy frame according to FIG. 5;

FIG. 7 is a second perspective view of the slider element;

figure 8a is a front view of a slider element according to figures 6 and 7; and

fig. 8b is a front view of a slider element according to the prior art.

Detailed Description

Fig. 1 shows a roof 10 of a passenger vehicle, which is not shown in detail, which has a roof opening 12 that can be closed or at least partially released by means of a transparent cover element, which is not shown in detail here.

In order to be able to reduce or prevent light incidence through the roof opening 12, the vehicle roof 10 has a roller blind assembly 14 which, as a screening element, comprises a roller blind web 16 made of a foldable or windable, opaque or partially light-transmitting material. In the region of the rear side edge of the top cutout 12, the roller blind web 16 can be wound up into a roller blind roll 18. The roller blind web 16 is provided on its edge facing away from the roller blind 18 with a pull-off canopy 20, which is an actuating element of the roller blind assembly 14 and is described in detail with reference to fig. 2 to 4. The traction canopy frames 20 extending in the top transverse direction are guided with their ends in the

guide rails

22A or 22B by means of slider elements 28, respectively. The two slider elements 28 are each connected to a

drive cable

24A or 24B, which is driven by a common drive motor 26. Thus, the slider element 28 pulling the canopy frame 20 is a roller blind coupler.

The roller blind assembly 14 is a side-guided roller blind whose roller blind web 16 has guide strips on its side edges, respectively, which are guided in the associated

guide rail

22A or 22B. The guide belts are each configured as a coil spring, so that the roller blind web 16 automatically winds up the roller blind roll 18 outside the

guide rails

22A and 22B.

As already mentioned above, the traction canopy frame 20, which is made of steel profiles produced according to the rolling process, is provided at its two ends with a respective slide element 28. The slider elements 28, which are designed as plastic injection-molded parts, each comprise a slider body 30 for attaching the associated

drive cable

24A or 24B and which is guided in a guide channel 34 of the associated

guide rail

22A or 22B by means of guide webs 32. From the slider body 30, a profile pin 36 projects in the direction of the vertical roller blind longitudinal center plane, which engages in a recess 38 of the draw-off roof frame 20 formed by a profile cavity. The two slider elements 28 are constructed mirror-symmetrically to one another.

As can be seen from an overview of fig. 3 and 4, the frame profiles forming the pull-off frame 20 are twisted, i.e. twisted about the longitudinal axis of the pull-off frame, so that the end faces arranged on both sides are twisted by about 6 degrees relative to one another. The slider elements 28 arranged on both sides, or their slider bodies 30, are thereby twisted by approximately 6 degrees relative to one another, as viewed in the transverse direction of the roller blind, so that they are inclined in the guide track 34 and guided under stress, wherein the pulling tent frame 20 forms a spring element which tensions the slider bodies 30 of the slider elements 28 in the guide rails. Thereby, possible rattling noise, which may be generated especially in bad lane conditions, is effectively resisted.

Fig. 5 to 8 show an alternative embodiment of a pull canopy frame 20 ' with lateral sliding

block elements

42A and 42B, which are guided in the guide rails of a roller blind assembly of the type described above, which corresponds to the roller blind assembly according to fig. 1 to 4, with the exception of the pull canopy frame 20 ' with its sliding

block elements

42A and 42B, and differs therefrom in that the pull canopy frame 20 ' itself is straight, i.e. has no torsion. However, profile pins 36 which project from the slider body 30 in the direction of the roller blind longitudinal center plane and engage into the profile cavities of the draw tent frame 20' are molded onto the slider body 30, so that these are guided in the two

guide rails

22A and 22B in a way that the opposite positioning is twisted 6 degrees relative to one another. The

slider elements

42A and 42B are therefore not configured mirror-symmetrically relative to one another, but rather have profile pins which are oppositely twisted relative to one another on the slider body configured mirror-symmetrically relative to one another.

By the two profile pins 36 twisting in opposite directions on the slider body 30, the slider bodies twist in opposite directions relative to one another and are guided under stress in the

guide rails

22A and 22B. The draw tent 20' made of a metal material, such as aluminum or steel, acts as a spring element, whereby the slider element 28 can be prevented from rattling or getting stuck in the

guide rails

22A and 22B.

Otherwise, the roll screen assembly having the pull cage 20' corresponds to the roll screen assembly described in connection with fig. 1 to 4.

As can be taken in particular from fig. 8a, the profile pins 36 are each twisted by 3 degrees relative to the sliding plane defined by the associated slider body 30. In contrast, in the comparative example shown in fig. 8b corresponding to the prior art, the profile pin 36S is not twisted with respect to the sliding plane formed by the slider body 30S. This means that the two slider bodies 30S, viewed in the top transverse direction, are guided in alignment with one another in guide rails arranged on both sides.

List of reference numerals

10 vehicle roof

12 top notch

14 rolling shutter assembly

16 rolling curtain web

18 rolling shutter

20. 20' draw tent frame

22A, B guide rail

24A, B drive cable

26 drive motor

28 slider element

30 slider body

32 guide tab

34 guide way

36 section bar pin

38 recess

42A, B slider element

Claims

1. Roller blind assembly for a motor vehicle, comprising a roller blind web (16) which can be rolled up into a roller blind (18) and is connected at its edge facing away from the roller blind (18) to a traction canopy frame (20, 20'), which is provided on both sides with respective slider elements (28, 42A, 42B) with respect to a roller blind longitudinal center plane, which are guided in respective guide rails (22A, 22B), characterized in that the two slider elements (28, 42A, 42B) are held under stress in the guide rails (22A, 22B) in opposite rotational directions with respect to an axis extending in the roller blind transverse direction.

2. Roller shutter assembly according to claim 1, characterized in that the traction canopy frame (20, 20') is made of a metallic material and serves as a spring element which holds the two slider elements (28, 42A, 42B) under stress in the guide rail (22A, 22B) in opposite rotational directions.

3. Roller shutter assembly according to claim 1 or 2, characterized in that the slider elements (28, 42A, 42B) each have a pin (36) which projects from the slider body (30) in the direction of the vertical roller shutter longitudinal center plane and which is inserted into a recess (38) of the pull hood frame (20, 20').

4. Roller shutter assembly according to claim 3, characterized in that the pin (36) engages in a torsion-proof manner in a profile cavity of the traction canopy frame (20, 20') forming the recess (38), so that the slider bodies (30) are twisted relative to one another, viewed in the transverse direction of the roller shutter.

5. Roller shutter assembly according to claim 3 or 4, characterized in that the traction canopy frame (20) is twisted about a longitudinal axis of the traction canopy frame.

6. Roller shutter assembly according to one of claims 3 to 5, characterized in that the pins (36) are aligned with one another and the slider bodies (30) are twisted relative to one another, viewed in the transverse direction of the shutter.

7. Roller shutter assembly according to one of claims 3 to 6, characterized in that the slider bodies (30) are twisted relative to one another, in particular about 2 to 8 degrees, as viewed in the transverse direction of the roller shutter.

8. Roller shutter assembly according to one of claims 1 to 7, characterized in that the roller shutter web (16) is provided with lateral guide strips which are each connected to one of the slider elements (28, 42A, 42B).

9. Roller shutter assembly according to one of claims 1 to 8, characterized in that the slider elements (28, 42A, 42B) are driven by drive cables (24A, 24B), respectively, which can be operated by a drive motor.