CN115038602A - Roller blind arrangement on a vehicle roof - Google Patents

Abstract

The invention relates to a vehicle roller blind device (3) comprising: a roller blind web (4) which is wound on a winding shaft (8) which is rotatably mounted and prestressed in the winding direction by means of a tensioning spring (25); and a tensioning bracket (5) which is connected to the pull-out end of the roller blind web (4) and is mounted on the guide rail (7) so as to be movable on both sides, and which can be adjusted along the guide rail (7), in particular by means of a drive, in order to wind the roller blind web (4) onto or off of the winding shaft (8), wherein the tensioning spring (25, 45) is tensioned between the winding shaft (8) and a spring support part (23) mounted so as to be rotatable, in particular coaxially to the winding shaft (8), and the adjusting device adjusts the spring support part (23) relative to the winding shaft (8) in order to set a spring prestress which is adapted to the pull-out length of the roller blind web (4).

Description

Roller blinds on the roof

technical field

The invention relates to a roller blind device for a vehicle, which has a roller blind web which is wound on a winding shaft which is mounted so as to be rotatable and is prestressed in the winding direction by means of a tensioning spring. ; and a stretching bracket, which is connected to the pull-out end of the roller blind web and is mounted on guide rails on both sides so as to be movable on both sides and is used for winding the roller blind web onto the winding shaft or from the roller blind web. The winding shaft is unwound, and the stretching bracket can be adjusted along the guide rail, in particular by means of a drive.

Background technique

A roller shutter arrangement of this type is known from DE 10 2017 111 734 A1. The winding shaft is preloaded in the winding direction by means of a tensioning spring. The tensioning spring is fastened on the one hand on the winding shaft and on the other hand on the stationary bearing part. As the roller blind web is unwound with increasing pull-out length, the rotating winding shaft tensions the tensioning spring. Larger pull-out lengths are limited and cannot be set due to the resulting excessive spring deflection and spring tension.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a vehicle roller blind arrangement as described at the outset, which is improved in that the roller blind web is drawn out by a greater extension length.

This task is solved according to the invention in the vehicle roller blind arrangement mentioned at the outset in that the tensioning spring is held between the winding shaft and in particular a spring support element which is rotatably mounted coaxially with the winding shaft. The tensioning and adjusting device adjusts the spring support member relative to the winding shaft to set the spring prestress that matches the pull-out length of the roller blind web.

Advantageous configurations of the invention are given in the dependent claims.

The spring support element can be adjusted relative to the winding shaft by means of the adjusting device, and the spring prestress can be adapted to the pull-out length of the respective roller blind web. As a result, the spring prestress can be set to a desired permissible size or permissible size range. In this way, an avoidable or impermissible increase in the spring prestress can also be prevented at greater extension lengths of the roller blind web. Therefore, when the roller blind web is unwound from the winding shaft by rotating the winding shaft when the roller blind is retracted, the spring prestress set in the wound roller blind web or in the opened roller blind For example, it can remain as constant as possible or increase only slightly.

The winding shaft can be, for example, a straight bend-resistant tube. On the other hand, the winding shaft can also be a flexible tube, which is rotatably supported on bearings on both sides with a slight curvature in the axial direction, wherein the curvature is, for example, to be covered with the roof of the vehicle. to match the curvature of the face. In addition, in both cases a rigid, torsionally arranged central shaft can be passed through the tubular winding shaft, wherein the central shaft is accordingly designed to be straight or curved. Furthermore, the winding shaft can also be formed in the form of a solid cylinder, in particular also from foamed plastic, whereby the winding shaft can be rotated together with the curved axis of rotation.

The tensioning spring is in particular a helical spring, a coil spring or a spring or coil spring which can be rotated under a torsional load and which is wound helically, for example. The helical spring can preferably have a relatively large axial length, while the coil or spring or coil spring can be designed as a very narrow spring unit in the axial direction, which requires only a small axial installation space.

The following structural design represents the tensioning of the tensioning spring between the winding shaft and the spring support member, which provides the tensioning function of the tensioning spring. The arrangement of the tensioning spring can therefore be arranged, for example, inside the tubular winding shaft, but also outside the winding shaft and axially beside the winding shaft and is in principle not restricted.

In the case of a conventional vehicle roller blind arrangement with tensioning springs that are fixedly tensioned on both sides, a larger pull-out length of the roller blind web of, for example, 2000 mm requires the winding shaft to rotate, for example, about 20 revolutions and to wind Said rotation of the shaft directly translates into a tensioned rotation of the tensioning spring by 20 revolutions, while the change in the prestress of the tensioning spring can be adjusted in the case of the vehicle roller blind device according to the invention by corresponding adjustment of the spring support member. For example, it is assumed that the tension rotation is only three times.

It is therefore expedient for the adjusting device to rotate the spring support element in the direction of rotation of the winding shaft when the roller blind web is unwound, so that the spring prestress set on the rolled roller blind web is maintained or is only relatively small changes. When winding the roller blind web, a corresponding rotation of the spring support element takes place in the winding direction of the winding shaft.

The adjustment device can be designed in different ways. The adjusting device can thus have a drive motor, for example an electric motor. The drive motor or electric motor drives the spring support part, for example, by means of a direct coupling or by means of an indirect coupling via a coupling element, such as an intermediate shaft or a push-pull cable. On the other hand, the drive motor or the electric motor can also form the spring support member or part of the spring support member. The control of the drive motor or the electric motor takes place, for example, as a function of the rotational position of the winding shaft or the position of the stretching frame or the position of the drive element regulating the stretching frame.

Furthermore, the adjustment device can have drive elements, for example drive wheels, friction wheels, pinions, rope drums, belt drums or wheels or the like. In particular, the drive element is arranged coaxially with the spring support part and is formed on the spring support part or is connected to the spring support part in a rotationally fixed manner. The drive element or the drive wheel or the pinion is adjusted in cooperation with an adjustment element, eg a corresponding drive cable or cable or the like, which is connected to the stretching bracket and can be adjusted by the drive motor. The drive cables are in particular diagonal cables, as is known, for example, from sunroof drives. The drive wheel or pinion can also be formed by a toothed ring, which is placed on or at the spring-supported part. The drive cable can also be a so-called output cable, which consists of a section of the drive cable that is output by the drive motor, which section lies opposite the drive section connected to the stretching bracket with respect to the drive motor.

Furthermore, the actuation of the roller blind can also be carried out by manually moving the tensioning bracket, wherein the coupling between the tensioning bracket and the drive element can be effected, for example, by means of a drive cable or also by means of a cable.

According to a preferred configuration, the spring support member or the pinion or the drive wheel can be coupled to the drive cable by means of a transmission and can be adjusted rotatably by said drive cable. By means of the transmission, an overdrive or a deceleration can be set between the movement of the drive cable, and thus the rotation of the winding shaft, on the one hand, and the rotation of the spring support element, on the other hand. Furthermore, the transmission can be used to adjust the drive cable extending to the cable guide and designed accordingly. The transmission preferably has a drive pinion on which the drive cable is drivingly fitted and a driven pinion arranged on a common shaft, said driven pinion cooperating with a pinion coupled to the spring support member. However, further transmission assemblies with more than two pinions can also be used.

According to a preferred embodiment it is provided that the first bearing and the second bearing are received therebetween and rotatably support the winding shaft. Here, the tensioning spring is arranged inside the winding shaft or inside a part that rotates with the winding shaft, for example a bearing sleeve or the like. On the other hand, the tensioning spring can be arranged outside the winding shaft, eg axially beside the winding shaft, on a bearing which supports the spring support part.

Expediently, the two bearings each contain a tensioning spring with a spring support part adjustable by the adjusting device, wherein the tensioning spring is preferably arranged outside the winding shaft. If the winding shaft is not torsionally fixed or the winding shaft between the two lateral bearing sleeves or bearing pins is not formed by a winding element, for example a tube or a cylindrical rod, but only by a multi-turn roller blind This configuration is particularly useful if the web or roller blind material is constructed and therefore not sufficiently torsionally resistant. This configuration can also be expedient when the drive torque of only one single tensioning spring cannot be sufficient. The installation space provided for the respective tensioning spring with only small dimensions would therefore require two small tensioning springs with respectively smaller drive torques.

In a preferred configuration, the tensioning spring, for example in particular a spring or coil spring, is received in a housing, which can be a spring support part, and which is rotationally fixed to the drive wheel or pinion ground connection. The housing is arranged on the shaft or also on the spring support through the central hole and is mounted thereon in a particularly rotatable manner.

According to a preferred embodiment it is provided that the first bearing and the second bearing are received therebetween and rotatably support the winding shaft. The first bearing has a first bearing pin, which rotatably supports a first bearing sleeve of the winding shaft, and the central shaft of the winding shaft is mounted at its first end in a rotationally fixed manner on the first bearing. on a bearing pin. The second bearing rotatably supports the spring support member with respect to the fixed center shaft and the winding shaft. In this configuration, the central shaft may be not only linear, but also curved, wherein the tubular winding shaft is so flexible that the winding shaft can conform to the curvature as it rotates match.

According to a further preferred embodiment it is provided that the second bearing has a bearing sleeve in which the spring support element is rotatably mounted, wherein the pinion of the spring support element is arranged on the shaft of the bearing sleeve of the second bearing On the outer side, the spring support member is rotatably supported on the center shaft by means of a sliding bearing on the inner side in the axial direction.

According to a further preferred embodiment, the spring support element has a central bearing section, wherein the second plain bearing sleeve of the winding shaft is rotatably mounted on the central bearing section. On the other hand, the central bearing section can also be mounted slidingly in the bearing sleeve of the second bearing. The second sliding bearing sleeve of the winding shaft is then slidably supported on the bearing sleeve of the second bearing.

According to a further preferred embodiment, it is provided that the second bearing has a fixed bearing pin which extends to the central shaft and is fixedly connected to the central shaft, wherein the spring support element is rotatably mounted on the bearing pin and the second sliding bearing sleeve of the winding shaft is rotatably supported on the central bearing section of the spring support member.

According to a further preferred embodiment it can be provided that the pinion of the spring support element is arranged on the bearing pin of the second bearing. Instead, it can be provided that the pinion of the spring support element is arranged on the bearing pin and that the pinion meshes with a driven pinion which is rotatably supported on the bearing wall of the second bearing by means of the shaft, Therein, the shaft carries a drivable pinion outside the bearing wall.

In principle, the vehicle roller blind arrangement can be arranged under the roof as also behind the windows, and the pull-out direction can be in different directions due to the corresponding arrangement of the winding shaft and the guide rail.

The flat covering element or covering element, which is formed, for example, from a fabric or a film, is referred to as a roller blind web.

The vehicle roller blind arrangement according to the invention thus allows a very smooth extension of the tensioning spring over the entire extension length of the roller blind web by selecting the diameter of the pinion connected to the spring support member and/or by allowing the configuration of the transmission , slightly decreasing or "bowl-like" or also almost constant spring characteristic curve, whereby very long pull-out lengths, for example at least 2000 mm, can also be achieved. The tensioning spring is preferably designed in such a way that it is strongly or maximally prestressed in the open position. When the roller blind is closed, the tensioning spring is tensioned by unwinding the roller blind web from the winding shaft, wherein the drive cable is moved together with the closing movement of the roller blind. The spring end of the tensioning spring, which is supported on the spring support element, is driven by the co-moving pinion, and the tensioning spring is relieved, whereby the desired spring characteristic curve is produced by superposition. It is thus possible, for example, for the tensioning spring itself to undergo only about 3 tensioning rotations with respect to a pull-out stroke of 2000 mm, instead of 20 tensioning rotations in the case of conventional vehicle roller blind arrangements.

Since the ratio of the spring tension to the unloading force is not constant due to the changing winding diameter of the roller blind web on the winding shaft, the speed is changed by means of the diameter of the pinion coupled to the spring support or by means of an adjustable transmission. Ratio can produce different characteristic curve types:

- Incremental (closing direction) → winding diameter < pinion diameter

- decreasing (closing direction) → winding diameter > pinion diameter

- "Bowl" → winding diameter (blind open) > pinion diameter > winding diameter (blind closed).

The transmission or its components can be integrated, for example, on the spring support part and the pinion, for example by means of injection molding.

The adjustment drive can take place either via the drive cable with its drive section connected to the stretching bracket or via the output cable, which must then be longer on one side. In the case of using output ropes, the extension of the drive ropes, the set of roller blind web positioning and the connection to the pinion is more flexible, whereby the entire set can be more easily realized.

Description of drawings

The invention is explained in more detail below with reference to the accompanying drawings on the basis of an exemplary embodiment of a vehicle roller blind arrangement according to the invention. In the attached picture:

FIG. 1 shows a vehicle with a roof with a transparent roof section and a vehicle roller blind arrangement for covering the roof section in a top view;

FIG. 2 shows a first embodiment of a vehicle roller blind arrangement in a cross-section with a winding shaft carried by the roller blind web, a tensioning spring and an adjustably supported spring support element;

Figure 3 shows a second embodiment of a vehicle roller blind arrangement in a cross-sectional view;

Figure 4 shows a third embodiment of a vehicle roller blind arrangement in a cross-sectional view;

Figure 5 shows a fourth embodiment of a vehicle roller blind arrangement in a cross-sectional view;

FIG. 6 shows a perspective view of the bearing of the winding shaft according to FIG. 4 with a spring support part integrated in the winding shaft and an adjustment device including a transmission;

FIG. 7 shows the bearing shown in FIG. 6 of the winding shaft in cross-section with a spring support part integrated in the winding shaft and an adjustment device including a transmission;

Figure 8 shows an embodiment in a cross-sectional view, which is similar to the second embodiment shown in Figure 3;

Figure 9 shows a further embodiment in cross-section with a tensioning or spring spring arranged in the winding shaft;

Figure 10 shows an example of a spring in a perspective view;

Figure 11 shows a further embodiment in cross-section with a clockwork spring arranged outside the bearing of the winding shaft;

Fig. 12 shows a further embodiment in cross-section which is a variant of the embodiment shown in Fig. 11;

FIG. 13 shows, in a top view, a further embodiment of a vehicle roller blind arrangement with a clockwork spring arranged on two bearings of the winding shaft;

FIG. 14 shows, in a top view, a further embodiment of a vehicle roller blind arrangement having a spring arranged on only one bearing of the winding shaft;

Figure 15 shows in cross-section a further embodiment of a clockwork spring arranged on a bearing of the winding shaft;

Figure 16 shows, in cross-section, an additional embodiment that is a variation of the embodiment shown in Figure 11; and

FIG. 17 shows a further embodiment of a vehicle roller blind arrangement with a clockwork spring arranged on two bearings of the winding shaft in a top view.

Detailed ways

A vehicle, for example a passenger car, has a roof 1 with a transparent roof section 2, which is formed, for example, by a glass cover of a sunroof or a fixedly mounted roof part or roof section. Below the transparent roof section 2 is arranged a vehicle roller blind arrangement 3 with a roller blind web 4 for covering the transparent roof section 2 . The roller blind web 4 made, for example, of fabric or film or the like has, at its free front edge or pull-out end, tensioning supports 5 which can be respectively attached to its two lateral ends 6 . It is mounted movably on lateral guide rails 7 extending in the longitudinal direction of the top. The vehicle roller blind arrangement 3 has a winding shaft 8 which is arranged in a transverse orientation on the vehicle roof 1 , for example, behind the roof section 2 to be covered and is rotatable by means of two end-side bearings 9 and 10 . be supported. The bearings 9 and 10 are arranged, for example, on a roller blind frame 11, which is arranged on the vehicle roof 1, which may, for example, comprise two guide rails 7 and a transverse frame part 12 ( 6 ), the transverse frame portion may also constitute a guide for the roller blind web 4 . The two bearings 9 and 10 are arranged in particular in the region of the rear ends of the two guide rails 7 with respect to the top longitudinal direction.

The roller blind web 4 is fastened at its rear edge or rear end on a tubular winding shaft 8 and is wound on a winding shaft 8 which is prestressed by spring force in the winding direction. Each guide rail 7 has a cable guide 13 on which a drive cable 14 is movably supported. On the one hand, the drive cable 14 is connected to a support slide (not shown) arranged on the lateral end 6 of the tension support 5 , which is mounted so as to be displaceable on the guide rail 7 , and the drive cable is On the other hand, it can be adjusted by a drive motor 15 , for example an electric variable speed motor, which is arranged, for example, on the roller blind frame 11 . By means of the two drive cables 14 the stretching bracket 5 can be adjusted along the two guide rails 7 for winding the roller blind web 4 onto or unwinding from the winding shaft 8, whereby the roller blind can be adjusted Desired cover position of web 4.

The roller blind web 4 expediently has lateral guide strips 16 at its side edges, which are guided in corresponding roller blind guides 17 (see FIG. 6 ), and the roller blind web 4 is guided in the transverse direction. Hold tight.

Arranged inside the winding shaft 8 (see FIG. 2 showing the first embodiment), a central shaft 18 is arranged fixedly on both sides of bearing pins 19 and 20 which extend from the first bearing 9 or The second bearings 10 protrude opposite to each other. The rigid central axis 18 can in principle be configured linearly or also curved. The winding shaft 8 is rotatably mounted relative to the bearing pins 19 and 20 by means of the two bearing sleeves 21 and 22 around the central axis 18 . The first bearing bush 21 is rotatably mounted on the first bearing pin 19 and is connected to the end of the winding shaft 8 in a rotationally fixed manner. The winding shaft 8 can be designed as a rigid tube or a bending-resilient tube, for example made of plastic, so that in the case of a curved central shaft 18 the winding shaft can be placed on the central shaft 18 . When rotated, it deforms elastically accordingly. The configuration shown in FIG. 2 with a linear center shaft 18 can thus also be configured with a curved center shaft 18 , wherein in this case the bearings 9 and 10 are configured with bearings which are correspondingly at a small angle to each other. Pin 19 or 20.

In the case of a rigid linear winding shaft 8 the central shaft 18 can be omitted.

The spring support member 23 is rotatably supported on the second bearing pin 20 . The spring support part 23 has a central section 24 which is designed, for example, as a plain bearing bush with an outer bearing surface, on which the second bearing bush 22 is rotatably mounted. A spring unit in the form of a tensioning spring 25 is arranged in the cylindrical cavity 26 between the central shaft 18 and the winding shaft 8 and surrounds the central shaft 18 with a radial play, which can in particular be helical or coil-shaped. The spring is elastically deformed torsionally under a torsional load. The tensioning spring 25 with its first tensioning spring end 27 facing the first bearing sleeve 21 is connected to the first bearing sleeve 21 in a rotationally fixed manner, for example fixed on the inner end side of the first bearing sleeve 21 , for example by means of The end of the spring wire inserted into the hole is realized. The tensioning spring 25 is connected to the spring support part 23 in a rotationally fixed manner with its second tensioning spring end 28 facing the second bearing sleeve 22 . The spring support part 23 has an inner section 29 extending inwards from its central section 24 and expediently having a larger diameter than the central section 24 . The tensioning spring 25 is fastened with its second tensioning spring end 28 to the inner section 29 of the spring support part 23 , for example suspended at the fastening point of the spring support part 23 .

On its axially outer and outer end 30 adjacent to the second bearing 10, the spring support part 23 has a pinion 31 which is connected in a rotationally fixed manner with the central section 24 of the spring support part 23 or with all The central section is constructed in one piece and is rotatable together with the spring support element 23 around the second bearing pin 20 and is arranged in front of or inside the bearing part, eg the bearing wall 32 of the second bearing 10 .

In particular, the following drive cables 14 of the two drive cables 14 of the oblique cable are in adjustment with the pinion 31 , so that the tension bracket 5 connected to the drive cable 14 and the spring support are realized by the coupling of the drive cable 14 and the pinion 31 . Corresponding to the rotational position of the part 23 , the drive cable is guided in its extension by the drive motor 15 to the guide rail 7 on which the second bearing 10 is arranged. The adjusting device for adjusting the spring support member 23 thus comprises at least the pinion 31 and the drive cable 14 which actuates the pinion 31 .

The drive cable 14 adjusts to the pinion 31 at the position of its upper edge. The roller blind web 4 (not shown in FIG. 2 ) extends from the upper side of the winding shaft 8 to the stretching bracket 5 . The longitudinal adjustment of the stretching bracket 5 along the guide rail 7 causes a rotation of the winding shaft 8 by corresponding movement of the roller blind web 4 . In synchronism with this, the drive cable 14 rotates the pinion 31 and thus the spring support member 23 in a consistent rotational direction. The winding radius of the roller blind web 4 on the winding shaft 8 varies with the pull-out length of the roller blind web 4 and thus with the position at which the roller blind web 4 is wound onto the winding shaft 8 . The pinion 31 preferably has a radius which corresponds approximately to the winding radius of the roller blind web 4 on the winding shaft 8 at half the drawn-out length of the roller blind web 4 .

The vehicle roller blind device 3 is assembled in such a way that the spring support part 23 rotates relative to the winding shaft 8 in the tensioning rotation direction of the tensioning spring 25 to such an extent that the preset preset of the tensioning spring 25 is set. The stress holds the roller blind web 4 under sufficient tensile stress. When the winding shaft 8 rotates synchronously with the spring support part 23 , the winding shaft 8 maintains substantially the same spring prestress relative to the spring support part 23 . A slight increase and decrease of the spring prestress occurs due to the changed winding radius of the roller blind web 4 .

As a result, a relatively long roller blind web 4 can be unwound from the winding shaft 8 with a large pull-out length without excessive spring prestressing or tensioning due to an otherwise increased spring torsion. Compression of spring 25.

In the region of the second bearing 10 , a fabric guide (not shown) can be provided, which is arranged, for example in the form of a plate, from the pinion 31 inwards towards the second bearing sleeve 22 and is arranged, for example, on the second bearing sleeve 22 or on the spring support member 23. The fabric guide prevents that the roller blind web 4 can come into contact with the pinion 31 with its side edges and in particular cannot be caught between the pinion 31 and the drive cable 14 .

The bearing 10 may be referred to as a component, in principle also referred to as a fabric positioning device, which in addition to supporting the winding shaft 8 also provides a connection to the guide rail 7 and an input area of the roller blind web into the guide rail 7 .

The second embodiment of the vehicle roller blind device 3 (see FIG. 3 ) is modified from the aforementioned first embodiment in that the adjustment device for the spring support element 23 comprises a transmission 33 with a drive pinion 34 and the driven pinion 35 , which are arranged in a rotationally fixed manner on a common shaft 36 . The shaft 36 is rotatably supported on the bearing wall 32 . The driven pinion 35 is arranged on the inside and beside the bearing wall 32 towards the winding shaft 8 and meshes with the pinion 31 of the spring support member 23 . A drive pinion 34 is arranged on the outside next to the bearing wall 32 and on its periphery is adjustedly engaged with a drive cable 14 , which, for example, is adjusted on the upper side of the drive pinion 34 .

The adjustment of the spring support member 23 relative to the winding shaft 8 can be adjusted by selecting and determining the corresponding diameters of the pinion 31 of the spring support member 23 and the drive pinion 34 and the driven pinion 35 . When the pinion 31 and the driven pinion 35 of the spring support member 23 have the same diameter (as shown in FIG. 3 ) and the driving pinion 34 has the diameter of the pinion 31 of the first embodiment ( FIG. 2 ) , the same behavior as in the first embodiment is achieved in principle with regard to the spring prestress. Since the transmission 33 causes a reversal of the direction of rotation of the adjustment movement initiated by the drive cable 14, the roller blind web 4 must rest on the underside of the winding shaft 8 and unwind from said winding shaft (while the drive cable 14 is driving In the position shown in FIG. 3 on the upper side of the pinion 34 ) or the drive cable 14 has to be adjusted to fit the lower side of the drive pinion 34 .

For example, an increasing or decreasing spring characteristic of the tensioning spring 25 can be set with the pinion diameter selected differently in this way.

In principle, the output section of the drive cable 14 can also be adjusted in coordination with the pinion 31 or with the transmission 33 .

The arrangement of the drive pinion 34 on the outside of the bearing 10 or next to the bearing wall 32 can be advantageous with a narrow installation space ratio.

The third embodiment of the vehicle roller blind arrangement 3 (see FIG. 4 ) is modified from the previous embodiment in that the second bearing 10 has an elongated bearing bush 37 instead of the bearing pin 20 . The spring support part 23 extends through a bearing sleeve 37 with a central bearing section 38 , which also rotatably supports the pinion shaft of the pinion 31 , which rotatably supports the central bearing section 38 . A plain bearing pin 39 protrudes from the inner section 29 of the spring support part 23 to the central shaft 18 , said plain bearing pin 39 being slidably supported in a cylindrical bearing recess 40 of the central shaft 18 . The central shaft 18 is thus arranged in a rotationally fixed manner only on the first bearing 9 by means of the first bearing pin 19 , while said central shaft is held at its opposite end by the spring support part 23 without being fixed in rotation. Keep. The second bearing sleeve 22 of the winding shaft 8 is rotatably supported on a stationary bearing sleeve 37 .

The pinion 31 is arranged on the bearing section 38 or on the outside of the pinion shaft next to the bearing wall 32 and is in adjustment engagement with the drive cable 14 on the periphery of said pinion, which, by way of example, is in contact with the pinion 31 . Adjustable fit on the upper side.

The fourth embodiment of the vehicle roller blind arrangement 3 (see FIG. 5 ) is modified from the aforementioned third embodiment in that the second bearing 10 has a relatively short bearing sleeve 41 in the region of the bearing wall 32 . The spring support part 23 extends with a correspondingly short bearing section 42 , which is part of the pinion shaft, through a short bearing sleeve 41 and is slidably supported in this bearing sleeve. The second bearing sleeve 22 of the winding shaft 8 is rotatably supported on a central bearing section 43 of the spring support part 23 , which has a larger diameter than the shorter bearing section 42 . The pinion 31 is mounted in a rotationally fixed manner on the pin-like projecting bearing section 42 or the pinion shaft of the spring support part 23 .

In the embodiment shown in FIGS. 4 and 5 , the bearing wall 32 constitutes, in particular, a lateral limit for the central winding of the roller blind web 4 onto the winding shaft 8 .

The fifth embodiment of the vehicle roller blind arrangement 3 (see FIGS. 6 and 7 ) is basically constructed in the same way as the embodiment shown in FIG. 4 , but on the second bearing 10 has a gear 33 which is arranged on the bearing The wall 32 is outside and contains a drive pinion 34 and a driven pinion 35 which are mounted on a common shaft 36 in a rotationally fixed manner. The drive cable 14 is in adjustment engagement with the drive pinion 34 , and the output pinion 35 meshes with the pinion 31 , which is connected in a rotationally fixed manner to the bearing section 38 of the spring support member 23 .

The sixth embodiment of the vehicle roller blind arrangement 3 (see FIG. 8 ) is basically constructed in the same manner as the embodiment shown in FIG. 3 , wherein, however, the bearing pin 20 is fixedly connected to the bearing pin extension 20 ′ on the bearing 10 . , the bearing pin extension is extended coaxially with the bearing pin 20 and is fixedly connected to a fixed central shaft 18 , which is configured, for example, as a tube. The substantially tubular or sleeve-shaped spring support element 23 is mounted on the bearing pin 20 and the bearing pin extension 20 ′ so as to be slidable and rotatable. The bearing bush 22 connected to the winding shaft 8 is rotatably supported on the spring support member 23 . The annular pinion 31 , which is connected in a rotationally fixed manner to the spring support element 23 , adjoins the bearing wall 32 directly on the inside and, as shown, can be partially arranged in the associated annular groove 44 . A transmission 33 is provided, the drive pinion 34 of which is arranged on the shaft 36 in a rotationally fixed manner outside the bearing wall 32 and the output pinion 35 of which is arranged inside the bearing wall 32 in a rotationally fixed manner on the shaft 36 and meshes with a pinion 31 which is connected to the spring support part 23 in a rotationally fixed manner.

The arrangement of the gear 33 on the bearing 10 can thus be realized in different designs and can be adapted, in particular, to the existing installation space.

The embodiments shown below in FIGS. 9 to 17 , instead of the helical or coil-shaped tensioning spring 25 (see FIGS. 2 to 5 ), preferably contain a spring or coil in the interior of the hollow winding shaft 8 . A spring unit in the form of a spring 45 , which is of relatively narrow design in the axial direction. The mainspring or coil spring 45 expediently has a coil formed by a spring strip 46 (see FIG. 10 ), which is designed, for example, at its inner end 47 for connection to the first component. The suspension is also configured on its outer end 48 as an outer suspension for connection with a second member rotatable relative to the first member. A clockwork or coil spring 45 may be received in a housing 49 (see FIG. 11 ), eg a second member, on which the outer suspension of the spring strip 46 is fixed, and the housing The body has a central hole through which, for example, a shaft or pinion shaft as the first member passes, and the inner end 47 of the spring slat 46 is fixed to the shaft or pinion shaft together with the inner suspension of the spring slat. superior.

In the embodiment shown in FIG. 9 of the vehicle roller blind arrangement 3 , the bearing 10 has a bearing pin 50 on which a bearing sleeve 51 of the winding shaft (not shown) is rotatably supported. A rigid and eg tubular winding shaft realizes the connection between the two bearings 9 and 10 . An inner rigid shaft is therefore not required and can thus be dispensed with. The pinion 31 is connected to the pinion shaft 52 in a rotationally fixed manner or is produced in one piece. The pinion shaft 52 is rotatably supported in the bearing hole in the center of the bearing 10 and coaxial with the bearing pin 50 , and the pinion 31 is held outside the bearing 10 or beside the bearing wall 32 and in contact with the drive cable 14 . The pinion shaft 52 extends from the bearing pin 50 into the inner space of the bearing sleeve 51 . A spring or coil spring 45 is provided as a driven spring unit (see the preceding description according to FIG. 10 ), which is received in the bearing sleeve 51 adjacent to the bearing pin 50 . The inner end 47 of the preloaded spring or coil spring 45 is connected to the pinion shaft 52 in a rotationally fixed manner, for example by means of a receptacle suspended on the pinion shaft 52 . The outer end 48 of the spring or coil spring 45 is fixed to the inner side of the bearing sleeve 51 in a rotationally fixed manner, for example by means of a holder arranged to be suspended on the bearing sleeve 51 . The winding shaft is also rotatably supported on the bearing 9 at its (not shown) opposite end by means of a bearing sleeve. On the other hand, a spring or coil spring 45 can also be arranged on the bearing 9 as a driven spring unit, which is connected to the first spring unit or spring or coil via a second drive cable 45 are manipulated synchronously. In this embodiment, the pinion shaft 52 thus constitutes the spring support member 23 , and the pinion 31 is part of the adjustment device for the spring support member 23 .

In a further embodiment of the vehicle roller blind arrangement 3 (see FIG. 11 ), the bearing 10 has a bearing hole as a sliding bearing for the winding support shaft 53 of the winding shaft 8 . The winding bearing shaft 53 protrudes outwardly from the bearing 10 and forms a sliding bearing for the pinion 31 , which is arranged adjacent to the bearing 10 . The spring or coil spring 45 is arranged on the winding support shaft 53 beside the pinion 31 and surrounds the winding support shaft 53 . The inner end 47 of the spring or coil spring 45 is fixed to the winding support shaft 53 . The outer end 48 of the spring or coil spring 45 is fixed to a cylindrical housing 49 in which the spring or coil spring 45 is received and which is rotatable through an axial hole The ground is supported on the winding support shaft 53 . The housing 49 is coupled to the pinion 31 in a rotationally fixed manner, for example via a housing side wall 54 . The free end of the winding support shaft 53 has an axial limiter, which is protected against axial displacement holding the housing 49 of the spring or the winding spring 45, for example a limiter. The moving piece 55 is arranged before the shaft end stop 56 . A spring or coil spring 45 is preloaded between the pinion 31 and the winding shaft 8 . When unwinding the roller blind web 4 from the winding shaft 8 , the drive cable 14 synchronously oscillates the pinion 31 relative to the winding shaft 8 and the winding support shaft 53 . The housing 49 of the spring or coil spring 45 is thus at least an integral part of the spring support part 23 .

A further embodiment of the vehicle roller blind arrangement 3 (see FIG. 12 ) is modified from the previous embodiment ( FIG. 11 ) in that the bearing 10 has a bearing sleeve 57 which extends axially outwards, and The pinion 31 is rotatably supported on the bearing housing. The winding shaft 8 is rotatably supported with its winding support shaft 53 in a bearing sleeve 57 . A housing 49 with a spring or coil spring 45 is arranged on a winding bearing shaft 53 extending from the bearing sleeve 57 , which is on the one hand connected to the pinion 31 via the housing 49 in a rotationally fixed manner On the other hand, it is connected to the winding support shaft 53 in a rotationally fixed manner. The housing 49 is here also coupled to the pinion 31 in a rotationally fixed manner, for example via the housing side wall 54 .

FIG. 13 shows a roller blind arrangement 3 corresponding to FIG. 1 with two bearings 9 and 10 of a winding shaft 8 with a spring or coil spring 45 in each case corresponding to FIGS. 9 to 12 . A tension spring in the form of a clockwork or coil spring with the aforementioned spring support member 23 and adjustment means each containing a drive cable 14 . The winding shaft 8 is straight and torsion-resistant.

FIG. 14 shows a roller blind arrangement modified with respect to FIG. 13 , in which only one bearing of the winding shaft 8 , for example the second bearing 10 , has a tensioning or spring or coil spring 45 with a spring adjustment device, while The other bearing or the first bearing 9 is designed as a passive bearing which has no spring and therefore also no spring adjustment. The drive cables 14 assigned to the first bearing 9 do not adjustably cooperate with this bearing 9 .

The modified embodiment shown in FIG. 15 includes a bearing 10 in which a bearing pin 58 of the winding shaft 8 is rotatably supported. The pinion shaft 52 is rotatably supported on the one hand in the bore 59 of the bearing pin 58 and on the other hand in the further bearing part 10 ′ of the bearing 10 . A spring or coil spring 45 is arranged coaxially with the pinion shaft 52 between the bearing part 10 ′ and the bearing 10 , wherein the housing 49 of said spring or coil spring is fixed or torsionally fixed with the bearing pin 58 The spring or coil spring 45 is connected to the pinion shaft 52 in a rotationally fixed manner. The pinion 31 , which is fixedly arranged on the pinion shaft 52 , is arranged between the spring or coil spring 45 and the further bearing portion 10 ′. The function of the spring adjustment device is the same as that of the other embodiments.

FIG. 16 shows a further embodiment in which the bearing 10 has a bearing pin 20 with a connection to the curved rigid shaft 18 . The bearing sleeve 22 of the winding shaft 8 is rotatably supported on the bearing pin 20 . The spring or coil spring 45 is arranged adjacent to the bearing wall 32 on the bearing sleeve 22 , for example on a projection 60 of the bearing sleeve 22 . The inner end 47 of the spring or coil spring 45 is secured to the bearing housing 22 . The outer end 48 of the spring or coil spring 45 is fixed to a housing 49 of said spring or coil spring, on the periphery of which the pinion 31 is fixedly seated. The housing 49 is thus the spring support member 23 and is adjusted by the drive cable 14 via the pinion 31 . The tensioning spring in the form of a spring or coil spring 45 is thus tensioned between the bearing sleeve 22 of the winding shaft 8 and the spring support part 23 or housing 49 which is connected to the winding shaft The bearing housing 22 of 8 is rotatably supported coaxially.

FIG. 17 shows a variant of the vehicle roller blind arrangement 3 shown in FIG. 13 , in which a tensioning or spring or coil spring 45 is likewise provided on each of the two bearings 9 , 10 , but the winding The shaft 8 is not a fixed torsion-resistant shaft but, for example, forms a foam core or a cylindrical rod made of plastic foam, eg polystyrene. In this arrangement, the winding shaft can also be held in a curved manner by the two bearings 9 and 10 . The winding shaft can also have only two lateral bearing sleeves or bearing pins and can be formed between the two lateral bearing sleeves or bearing pins from several turns of the roller blind web or roller blind material. Since the winding shaft is not sufficiently torsionally resistant, tensioning springs arranged on both sides in this configuration are preferred.

List of reference signs

1 roof

2 top section

3 Vehicle roller blinds

4 Roller shutter formats

5 stretch stand

6 ends

7 Rails

8 winding shafts

9 Bearings

10 Bearings

10' bearing section

11 Roller shutter frame

12 Horizontal frame section

13 Cable guide

14 Drive cable

15 Drive motor

16 guide belt

17 Roller shutter guide

18 axes

19 Bearing pin

20 Bearing pins

20' Bearing Pin Extension

21 Bearing housing

22 Bearing housing

23 Spring support parts

24 Center Section

25 tension spring

26 Cylindrical cavity

27 First tension spring end

28 Second tension spring end

29 Internal section

30 outer end

31 Pinion

32 Bearing wall

33 Transmission

34 Drive pinion

35 driven pinion

36 axes

37 Bearing housing

38 Support section

39 Plain bearing pin

40 Support recess

41 Short bearing housing

42 Short bearing sections

43 Center support section

44 slots

45 Spring or coil spring

46 spring slats

47 Inner end

48 Outer end

49 Housing

50 Bearing pins

51 Bearing housing

52 Pinion shaft

53 Winding support shaft

54 Shell side wall

55 stopper

56 Shaft end stop

57 Bearing housing

58 Bearing pin

59 holes

60 protrusions.

Claims (15)

1. A vehicle roller blind device (3) comprising: a roller blind web (4) which is wound on a rotatably supported and in a winding direction by means of a tensioning spring (25) on a preloaded winding shaft (8); and a tensioning bracket (5), which is connected to the pull-out end of the roller blind web (4) and is supported on both sides so as to be movable in each case On guide rails ( 7 ) and for winding the blind web ( 4 ) onto or unwinding from the winding shaft ( 8 ), the stretching support can be provided in particular by means of the The drive is adjusted along said guide rails (7), It is characterized in that, The tensioning springs (25, 45) are tensioned between the winding shaft (8) and a spring support member (23) which is rotatably supported in particular coaxially with the winding shaft (8). tight, and The adjusting device adjusts the spring support member (23) relative to the winding shaft (8) to adjust the spring prestress that matches the pull-out length of the roller blind web (4). 2. The vehicle roller blind device according to claim 1, characterized in that, in order to maintain the spring prestress set in the rolled roller blind web (4), the adjustment device is unwinding the roller blind. When the width (4) is used, the spring support member (23) is rotated along the rotation direction of the winding shaft (8). 3. The vehicle roller blind device according to claim 1 or 2, wherein the adjusting device has: - an electric motor that drives said spring support member (23) or forms or contains said spring support member (23), or a drivable drive wheel or pinion (31), which is arranged coaxially with the spring support part (23) and is connected to the spring support part in a rotationally fixed manner. 4. The vehicle roller blind device according to claim 3, characterized in that the pinion (31; 34) is adjusted to fit with a drive cable (14), and the drive cable is connected to the tension bracket (5) And can in particular be adjusted by the drive motor (15). 5. The vehicle roller blind device according to any one of claims 1 to 4, characterized in that the spring support member (23) or the pinion (31) is connected to the drive through a transmission (33) A cable (14) is coupled and can be rotatably adjusted by the drive cable. 6. A vehicle roller blind arrangement according to any one of claims 1 to 5, characterized in that a first bearing (9) and a second bearing (10) are received between them and rotatably support the roller around axis (8), and - said tensioning springs (25, 45) are arranged inside said winding shaft (8), or - the tensioning spring (45) is arranged outside the winding shaft (8) on a bearing (10) supporting the spring support member (23). 7 . The vehicle roller blind arrangement according to claim 6 , wherein the two bearings ( 9 , 10 ) each have a tension spring ( 45), which is arranged inside or outside the winding shaft (8). 8 . The vehicle roller blind device according to claim 7 , wherein the winding shaft ( 8 ) is wound on the bearing sleeve or bearing by two bearing sleeves or bearing pins on both sides and multiple turns. The roller shutter web (4) on the pin is formed. 9 . The vehicle roller blind device according to claim 1 , wherein the first bearing ( 9 ) has a first bearing pin ( 19 ) which is rotatable. 10 . A first bearing sleeve (21) supporting the winding shaft (8), and the central shaft (18) of the winding shaft (8) at its first end is mounted on the first bearing in a rotationally fixed manner pin on, and The second bearing (10) rotatably supports the spring support member (23) with respect to a fixed central shaft (18) and the winding shaft (8). 10. The vehicle roller blind device according to any one of claims 6, 7 and 9, characterized in that the second bearing (10) has a bearing sleeve (37), and the spring support member (23) can is rotatably supported in the bearing housing, Wherein, the pinion (31) of the spring supporting member (23) is arranged on the axial outer side of the bearing sleeve (37) of the second bearing (10), and the spring supporting member (23) is axially inner side The central shaft (18) is rotatably supported by means of sliding bearings. 11. The vehicle roller blind arrangement according to any one of claims 6 to 10, characterized in that the spring support element (23) has a central support section (38), wherein, - the second plain bearing sleeve (22) of the winding shaft (8) is rotatably supported on the central bearing section (38), or - the central bearing section (38) is slidably supported in the bearing sleeve (37) of the second bearing (10), and the second sliding bearing sleeve (22) of the winding shaft (8) slides The ground is supported on the bearing sleeve (37) of the second bearing (10). 12. A vehicle roller blind arrangement according to any one of claims 7 to 11, characterized in that the second bearing (10) has a fixed bearing pin (20) extending to the center A shaft (18) is fixedly connected to the central shaft, wherein the spring support member (23) is rotatably supported on the bearing pin (20), and the first part of the winding shaft (8) Two plain bearing sleeves (22) are rotatably supported on the central support section (24) of the spring support member (23). 13. The vehicle roller blind device according to claim 12, characterized in that the drive wheel or pinion (31) of the spring support member (23) is arranged on the bearing pin (20) of the second bearing (10) )superior. 14. The vehicle roller blind device according to claim 12 or 13, characterized in that the pinion (31) of the spring support member (23) is arranged on the bearing pin (20), and the pinion (31) is arranged on the bearing pin (20). (31) meshes with a driven pinion (35) which is rotatably supported on the bearing wall (32) of the second bearing (10) by means of a shaft (36), wherein the A shaft (36) carries a drivable pinion (34) outside said bearing wall (32). 15. A vehicle roller blind arrangement according to any one of claims 3 to 14, characterized in that a tensioning spring, in particular a spring or coil spring (45), is received in a housing (49), so that The housing is the spring support member (23) and is connected to the drive wheel or pinion (31) in a rotationally fixed manner.

Images