DRIVE DEVICE FOR DRIVING A ROLLER BLIND DEVICE OF A FRAMELESS VEHICLE WINDOW

Abstract

Provided is a drive device for driving a roller device of a frameless vehicle window, including a drive rod with an upper roller end for the fixation to a curtain rod of a roller curtain of the roller device and a lower covering end, wherein the drive rod is movably supported between a cover position and a release position, further including a drive drum and an at least partially flexible drive fixed to the roller end or to the covering end of the drive rod and at least partially wraps around the drive drum in a force-transmitting manner for transmitting a drive force to the drive rod for a movement of the drive rod between the cover position and the release position during a rotation of the drive drum.

Claims

1. A drive device for driving a roller device of a frameless vehicle window, comprising a drive rod with an upper roller end for the fixation to a curtain rod of a roller curtain of the roller device and a lower covering end, wherein the drive rod is movably supported between a cover position and a release position, further comprising a drive drum and an at least partially flexible drive means which is fixed at least to the roller end or to the covering end of the drive rod and at least partially wraps around the drive drum in a force-transmitting manner for transmitting a drive force to the drive rod for a movement of the drive rod between the cover position and the release position during a rotation of the drive drum.

2. The drive device according to claim 1, wherein a spring drive is provided for transmitting a spring force directed in the opposite direction to the drive force to the drive rod for a movement of the drive rod between the cover position and the release position.

3. The drive device according to claim 1, wherein at least the at least partially flexible drive means is fixed to the roller end and to the covering end or wherein the at least partially flexible drive means is formed at least partially as a rope.

4. (canceled)

5. The drive device according to claim 1, wherein the at least partially flexible drive means wraps around the drive drum at least once.

6. The drive device according to claim 1, wherein the drive rod comprises a groove in which the at least partially flexible drive means runs at least partially.

7. The drive device according to claim 1, wherein the at least partially flexible drive means comprises at least two separate subsections, both of which are fixed to the drive drum, wherein one of the two subsections is fixed to the roller end and the other of the two subsections is fixed to the covering end.

8. The drive device according to claim 1, wherein the drive drum comprises a drive motor.

9. The drive device according to claim 1, wherein one end of the flexible drive means can be fixed to a winding shaft of the roller device.

10. The drive device according to claim 1, wherein a tensioning device is provided for introducing a tensioning force into the at least partially flexible drive means.

11. The drive device according to claim 1, wherein the at least partially flexible drive means is designed to be at least partially shear-stable.

12. The drive device according to claim 1, wherein the at least partially flexible drive means is designed as a curved flat band.

13. The drive device according to claim 1, wherein the at least partially flexible drive means comprises at least partially form-locking elements for a form-locking interaction with counter form-locking elements of the drive drum.

14. The drive device according to claim 1, wherein the at least partially flexible drive means (30) comprises at least partially flexible chain links (34) for forming a push chain.

15. The drive device according to claim 1, wherein a protective device for guideless protection at least of the drive rod or of the drive means is provided.

16. The drive device according to claim 1, wherein the drive rod is designed as a central drive rod for a central movement of the roller curtain.

17. The drive device according to claim 1, wherein at least one position stop is formed at least for the release position or for the at least one cover position for a mechanical provision of the associated position.

18. The drive device according to claim 1, wherein at least one sensor device is provided for detecting at least one position of the drive rod relative to the roller device.

19. The drive device according to claim 1, wherein the flexible drive means comprises two separate subsections and the drive drum comprises two drum sections, wherein the first subsection of the drive means is fixed to the first drum section and a winding drum of a winding shaft, wherein the second subsection of the drive means is further fixed to the second drum section and the covering end of the drive rod.

20. The drive device according to claim 1, wherein at least the drive means is pre-tensioned by means of a tensioning device.

21. A roller device for a frameless vehicle window of a vehicle, comprising a roller curtain which can be wound up and unwound on a winding shaft between a cover position and a release position, wherein a drive device for driving a roller device of a frameless vehicle window, comprises a drive rod with an upper roller end for the fixation to a curtain rod of a roller curtain of the roller device and a lower covering end, wherein the drive rod is movably supported between a cover position and a release position, further comprising a drive drum and an at least partially flexible drive means which is fixed at least to the roller end or to the covering end of the drive rod and at least partially wraps around the drive drum in a force-transmitting manner for transmitting a drive force to the drive rod for a movement of the drive rod between the cover position and the release position during a rotation of the drive drum is provided for driving the roller curtain between the cover position and the release position.

Description

[0033] Further advantages, features and details of the invention will be apparent from the following description, in which embodiments of the invention are described in detail with reference to the figures. In this connection, the features mentioned in the claims and in the description may each be essential to the invention individually or in any combination. The figures schematically show:

[0034] FIG. 1 an embodiment of a drive device according to the invention in the release position,

[0035] FIG. 2 the embodiment of FIG. 1 in the cover position,

[0036] FIG. 3 a further embodiment of a drive device according to the invention in the release position,

[0037] FIG. 4 the embodiment of FIG. 3 in the cover position,

[0038] FIG. 5 an embodiment of a drive drum,

[0039] FIG. 6 the embodiment of FIG. 5 in another drive state,

[0040] FIG. 7 an embodiment of a drive device according to the invention,

[0041] FIG. 8 an embodiment of form-locking elements,

[0042] FIG. 9 an embodiment of a curved drive means,

[0043] FIG. 10 an embodiment of a chain-shaped drive means,

[0044] FIG. 11 another embodiment of a drive device, and

[0045] FIG. 12 the drive device of FIG. 11 with the roller curtain in the cover position.

[0046] FIG. 1 schematically shows, together with FIG. 2, a first embodiment of a drive device 10 according to the invention. FIG. 1 shows the release position FP and FIG. 2 a cover position AP. In the embodiment of FIG. 1, the roller device 100 is designed to cover the vehicle window 200. For this purpose, a roller curtain 110 is provided, which is located in a covering position in front of the vehicle window 200 in the cover position AP according to FIG. 2. For a movement between the cover position AP and the release position FP, a drive device 10 is provided, which functions as follows:

[0047] In the normal state, the roller curtain 110 in the embodiment is in the release position FP as shown in FIG. 1. In order to perform a covering of the vehicle window 200, the drive device 10 is activated. For this purpose, a rotational movement is performed by a drive drum 40. Since a flexible drive means 30, here formed as a rope, is formed at least partially wrapped around the drive drum 40, the rotational movement leads to a winding on one side as well as an unwinding on the other side of the drive drum 40 for the drive means 30. Thereby, in the form of a tensile force, a driving force is transmitted to the connection at the covering end 24 of the drive rod 20 and a movement upwards from the release position FP according to FIG. 1 is generated. During this movement, the distance and thus also the rope length of the drive means 30 between the covering end 24 and the drive drum 40 is shortened and, on the opposite side, the rope length and the distance between the drive drum 40 and the roller end 22 is lengthened until the cover position AP according to FIG. 2 is reached. In order to prevent over-rotation or a desired further movement, position stops 80 are provided here for both end positions according to FIG. 1 and FIG. 2.

[0048] For the reverse movement, i.e. the retraction of the roller curtain 110, the drive drum 40 is moved in the opposite direction of rotation so that the drive means 30 is now wound up or pulled from the roller end 22. A tensile force can be transmitted to the roller end 22 and thus to the drive rod 20, so that the latter is pulled downwards. At the same time, this downward movement of the drive rod 20 pushes the covering end 24 and thus also the other end of the drive means 30 which is fixed there, downwards, until the release position FP as shown in FIG. 1 has been reached again.

[0049] In order to make the entire movement, as explained in the preceding paragraph, controllable, a sensor device 90 is provided here. This can be designed, for example, as a Hall sensor, and is used to perform an accurate position determination of the drive rod between the cover position and the release position. In this way, differences or calibration errors can be detected and compensated for by appropriate control procedures. Furthermore, in the embodiment of FIGS. 1 and 2, a tensioning device 60 is provided which is capable of applying a tensioning force to the drive means 30 on the left and right, and thus laterally guiding. An undesired lengthening of the drive means 30 or a breaking out of the predetermined path can be avoided or at least reduced by such a tensioning device 60.

[0050] FIGS. 3 and 4 show a further embodiment of a drive device 10 according to the invention. This is based on the basic considerations for FIG. 1. However, here the drive means 30 is only fixed to the lower covering end 24 of the drive rod 20. For movement from the release position FP to the cover position AP, the drive means 30 winds around the drive drum 40 as it rotates. In doing so, the tensile force is applied as a drive force to the drive rod 22 at the covering end 24, pushing it upward. For the reverse movement, the drive drum 40 can exclusively release the drive means 30. If the weight of the drive rod 20 and the curtain rod 112 is not sufficient to produce the return movement to the release position, this can be assisted, for example, by a spring force from a spring device 50. In this embodiment, the spring device 50 acts on the winding shaft 120 of the roller device 100. Of course, it is also possible that winding of the drive means 30 additionally also takes place on the winding shaft 120, so that a corresponding tensile force can also be transmitted to the roller end 22 via the roller curtain 110. In the embodiment of FIGS. 3 and 4, a protective device 70 is also provided, which provides contactless and guideless engagement protection or clamping protection or tangling protection for the drive rod 20 and/or the drive means 30.

[0051] FIGS. 5 and 6 show the possibility of a two-part drive means 30. Here, an upper part of the drive means 30 is fixed at one end to the drive drum 40 and at the other end to the roller end 22. The second subsection is also fixed to the drive drum 40 and at its opposite end to the lower covering end 24. Thus, no deflection is performed, but simultaneous winding and unwinding is performed, as shown in the two winding states of FIGS. 5 and 6. The mode of operation here corresponds to the embodiments of FIGS. 1 to 2.

[0052] FIG. 7 shows one way in which the drive means 30 can be guided in a hidden manner. For this purpose, the drive rod 20 comprises a groove 26 in which the drive means 30 runs at least partially. When the drive rod is arranged, the groove is preferably directed towards the vehicle window 200 so that the drive means 30 cannot be seen from the inside of the vehicle or can only be seen with difficulty.

[0053] FIG. 8 illustrates the possibility of a form-locking force transmission. For example, the drive drum 40 can comprise counter form-locking elements 42 here, which engage in a tooth-like manner in corresponding openings as form-locking elements 32 in the drive means 30. This variant can of course be combined with the embodiments of FIGS. 1 to 4, but also of FIGS. 9 and 10.

[0054] FIG. 9 shows a shear-stable design as can be used in particular in a solution of FIGS. 3 to 4, especially when no spring device 50 can or should be used. This shear-stable drive means 30 is designed here as a curved metal band in order to be able to ensure the desired shear transmission. Also shear-transmitting and thus thrust-shear is the design according to FIG. 10. Here the drive means 30 is provided in the form of individual chain links 34. The individual chain links 34 can simultaneously provide a form-locking engagement, as explained with reference to FIG. 8.

[0055] FIGS. 11 and 12 show yet another embodiment of a drive device according to the invention. Here, the drive drum 40 is divided into two drum sections. The drive means 30 is also divided into two subsections. Here, the left subsection of the drive means 30 extends as a rope between the left drum section of the drive drum and a winding drum, i.e. a winding device 125, of the winding shaft 120. The winding device 125 serves for fixing and for winding up the drive means 30, in particular the rope. For this purpose, the winding device 125 may comprise a fixing device for fixing one end of the flexible drive means 30. The winding device 125 may be arranged at a front end of the winding shaft 120, in particular may be plugged onto the winding shaft 120 or inserted into the winding shaft 120. In particular, the winding device 125 is stationary fixed to the winding shaft 120. Thus, this subsection of the drive means 30 can rotate the winding device 125 and thus the winding shaft 120 and thus in particular perform or at least support a winding of the roller curtain 110 from the cover position AP of FIG. 12 into the release position FP of FIG. 11. The right subsection of the drive means 30 extends between the right drum section of the drive drum 40 and the covering end 24 of the drive rod 20. This subsection in particular introduces the drive force for the movement from the release position FP to the cover position AP into the drive rod 20 and thus performs or supports this movement. A combination of the two drum sections into a common drive drum 40 is also conceivable in principle. Further, these two FIGS. 11 and 12 show a possibility of a tensioning device 60, which here acts on the drive means 30. This applied tensioning force is passed on in particular via the winding shaft 120 into the roller curtain 110, so that not only tensioning of the drive means 30 but also of the roller curtain 110 is effected with a single tensioning device 60. A separate tensioning device 60 for the roller curtain is then no longer necessary, which further increases the compactness of the drive device 10.

[0056] The foregoing explanation describes the present invention exclusively in the context of examples. Of course, individual features of the embodiments can be freely combined with each other, provided that this is technically reasonable, without leaving the scope of the present invention.

REFERENCE SIGNS

[0057] 10 drive device [0058] 20 drive rod [0059] 22 roller end [0060] 24 covering end [0061] 26 groove [0062] 30 drive means [0063] 32 form-locking element [0064] 34 chain links [0065] 40 drive drum [0066] 42 counter form-locking elements [0067] 50 spring drive [0068] 60 tensioning device [0069] 70 protective device [0070] 80 position stop [0071] 90 sensor device [0072] 100 roller device [0073] 110 roller curtain [0074] 112 curtain rod [0075] 120 winding shaft [0076] 125 winding drum/winding device [0077] 200 vehicle window [0078] AP cover position [0079] FP release position