Drive unit, wind deflector and motor vehicle

Abstract

The invention relates to a drive device (6) for extending and retracting a wind deflector (3) of a motor vehicle (1), with a longitudinal direction (X), a transverse direction (Y) and a vertical direction (Z) that are perpendicular to each other. Reliable operation in a compact design is achieved with a first guide rail (7) extending in the longitudinal direction (X) and having a first guide track (8) extending in the longitudinal direction (X) along the first guide rail (7) and varying in the transverse direction (Y); with a second guide rail (9) extending parallel to the first guide rail (7), spaced apart in the vertical direction (Z) from the first guide rail (7), and having a second guide track (10) extending in the longitudinal direction (X) along the second guide rail (9) and varying in the transverse direction (Y); with a drive element (11) for coupling with the wind deflector (3), which has a first guide element (12) adjustable in the first guide track (8) and a second guide element (13) adjustable in the second guide track (10).and with a rope drive (15) for driving the drive element (11) relative to the guide rails (7, 9), such that the drive element (11) moves in the longitudinal direction (X) along the guide rails (7, 9), wherein the rope drive (15) comprises a rope (16) rigidly connected to the drive element (11) and a motor (17) for driving the rope (16).

Description

[0001] The present invention relates to a drive device for retracting and extending a wind deflector of a motor vehicle. The invention also relates to a wind deflector for a motor vehicle equipped with such a drive device. The invention further relates to a motor vehicle equipped with such a wind deflector.

[0002] DE 10 2017 004 964 B4 discloses a wind deflector that can be adjusted on the body of a motor vehicle between a retracted passive position and an extended active position using a drive device. The drive device of the known wind deflector comprises an actuator that, via a gear mechanism, drives two drive rods in parallel. Each of these drive rods has two levers attached to it, which are firmly connected to an air guide element of the wind deflector.

[0003] DE 10 2019 114 702 A1 discloses a side wind deflector integrated into a motor vehicle's D-pillar. The associated drive mechanism operates with a worm gear.

[0004] From US 10 829 158 B2, a motor vehicle is known in which a door sill is adjustable between a vertically oriented passive position, which the door sill assumes when the vehicle is parked and while driving, and a horizontal active position, which the door sill assumes, for example, when the vehicle's side door is open, in order to facilitate entry and exit. An associated actuator operates with gas pressure cylinders. This vehicle is also equipped with a front bumper unit that is adjustable in height relative to the body. An associated drive device operates with a cable drive configured as an open cable pull, in which a cable is connected to the front bumper unit at a first end, while a second end of the cable is connected to a cable winch for raising and lowering the front bumper unit.

[0005] From FR 28 54 860 B1 a motor vehicle is known which has a plurality of wind deflectors which are arranged in a rear area of ​​the vehicle and can be pivoted between an active position and a passive position about a pivot axis oriented in the longitudinal direction of the vehicle.

[0006] The present invention addresses the problem of providing an improved or at least a different embodiment for a drive device, for a wind deflector equipped therewith, or for a motor vehicle equipped therewith, which is characterized in particular by high functional reliability. At the same time, a space-saving and / or cost-effective design is sought.

[0007] This problem is solved according to the invention by the subject matter of the independent claim. Advantageous embodiments are the subject matter of the dependent claims.

[0008] The invention is based on the general idea of ​​adjusting a driver element, which is configured for coupling to the wind deflector, along guide rails via a slotted guide and using a cable drive to drive the driver element. A slotted guide is characterized by high reliability, requires comparatively little installation space, and is also relatively inexpensive to implement. Cable drives also operate reliably. Furthermore, a cable drive can also be configured to be comparatively small, thus requiring relatively little installation space. In addition, a cable drive can also be implemented comparatively inexpensively.

[0009] In detail, the invention proposes equipping the drive device, which has a longitudinal direction, a transverse direction running perpendicular to the longitudinal direction, and a height direction running perpendicular to the longitudinal direction and perpendicular to the transverse direction, with a first guide rail which extends in the longitudinal direction and has a first guide slot which extends in the longitudinal direction along the first guide rail and varies in the transverse direction. The drive device is also equipped with a second guide rail which extends parallel to the first guide rail, i.e. parallel to the longitudinal direction, which is spaced apart from the first guide rail in the height direction and which has a second guide slot which extends in the longitudinal direction along the second guide rail and varies in the transverse direction.The drive device is also equipped with a driver element for coupling to the wind deflector, which has a first guide element that is adjustable and guided in the first guide slot and a second guide element that is adjustable and guided in the second guide slot. Furthermore, the drive device is equipped with a cable drive for driving the driver element relative to the guide rails, so that the driver element moves in the longitudinal direction along the guide rails. The cable drive has a cable firmly connected to the driver element and a motor for driving the cable. When the drive device is in operation, the motor drives the cable, which in turn drives the driver element, so that the driver element moves in the longitudinal direction along the two guide rails.The two guide elements of the driver element are guided in the two guide slots, so that the guide elements follow the contour of the respective guide slot. Since the guide slots vary along the longitudinal direction in the transverse direction, adjusting the guide elements in the longitudinal direction inevitably leads to an adjustment of the guide elements in the transverse direction. This also adjusts the driver element in the transverse direction, which can be used to move, i.e., extend and retract, the respective wind deflector.

[0010] The two guide blocks can be configured to vary identically or differently in the transverse direction. At least one of the guide blocks can be configured to be constant in the vertical direction, i.e., to not vary.

[0011] According to an advantageous embodiment, the cable drive can be configured as a closed cable pull, in which the cable runs in a closed loop, i.e., is designed to be virtually endless. A closed cable pull is characterized by particularly high functional reliability, since drive forces can be introduced into the cable in both directions via the cable—i.e., tensile forces and shear forces. In contrast to an open cable pull, in which the drive is located at one end of the cable, reliable power transmission can only be achieved in one direction—namely, the pulling direction.

[0012] According to another advantageous embodiment, the cable drive can have a first deflection pulley, which is arranged in the region of a first longitudinal end of the guide rails and is in particular rotatable about a first axis of rotation running parallel to the transverse direction, and a second deflection pulley, which is arranged in the region of a second longitudinal end of the guide rails and is in particular rotatable about a second axis of rotation running parallel to the transverse direction. The cable can then wrap around the first deflection pulley and the second deflection pulley by less than 360°. The first deflection pulley and the second deflection pulley can expediently be arranged such that the cable has a first cable section running parallel to the longitudinal direction, leading from the first deflection pulley to the second deflection pulley, to which first cable section the driver element is attached. This allows the driver element to be adjusted back and forth between the two deflection pulleys.

[0013] According to an advantageous embodiment, the cable drive can have a drive pulley driven by the motor, which is rotatable, in particular, about a rotational axis running parallel to the transverse direction. The cable can then wrap around the drive pulley by at least 360°. The drive pulley, driven by the motor, carries the cable, causing the cable to move around the drive pulley and the deflection pulleys, thus carrying the carrier element along the first cable section.

[0014] With rotation axes aligned parallel to the transverse direction and / or with rotation axis aligned parallel to the transverse direction, the drive device is extremely compact in the transverse direction.

[0015] According to an advantageous embodiment, the cable drive can have a cable tensioning element arranged in the cable. The cable tensioning element serves to maintain a minimum tension in the cable of the closed cable pull. The cable tensioning element can compensate for thermally induced changes in the length of the cable within the closed cable pull. Likewise, the cable tensioning element can compensate for changes in the length of the cable that arise, for example, when the driver element is simultaneously adjusted in the transverse direction during longitudinal adjustment. The cable tensioning element can connect two ends of the cable to one another, whereby the cable is closed in the cable pull and rotates virtually endlessly. In the cable tensioning element, the two cable ends can be pretensioned towards one another by means of a spring device.

[0016] In another advantageous embodiment, the drive roller can be arranged in the region of the first longitudinal end of the guide rails and in the region of the first deflection roller such that the cable has a second cable section leading from the drive roller to the second deflection roller, which second cable section extends along a connecting straight line that is tangent to the first deflection roller and the second deflection roller on a side facing away from the first cable section. In this embodiment, the cable drive is comparatively compact in the vertical direction. Such a cable tensioning element can now expediently be arranged on the first cable section. The cable tensioning element limits the longitudinal stroke that can be achieved with the help of the driver element, since the cable tensioning element cannot be moved via the deflection rollers or even via the drive roller. Accordingly, the cable tensioning element attached to the first cable section can only be moved between the first deflection roller and the second deflection roller.

[0017] According to an advantageous embodiment, the two deflection pulleys can have the same diameter, so that the connecting line and the second cable section extend parallel to the longitudinal direction. In this case, a connecting axis, which is perpendicular to the two axes of rotation running parallel to the transverse direction, also extends parallel to the longitudinal direction. The drive pulley is expediently located on a side of the second cable section facing away from the first cable section, so that the drive pulley rotates opposite to the deflection pulleys during a cable movement.

[0018] In an alternative design, the drive pulley can be spaced vertically from the first deflection pulley and arranged in the region of the first longitudinal end of the guide rails such that the cable has a second cable section leading from the drive pulley to the second deflection pulley, which second cable section runs inclined to the longitudinal direction and inclined to the vertical direction. In this case, the drive pulley can be located on a side of the second cable section facing the first cable section, so that the drive pulley rotates in the same direction as the deflection pulleys when the cable moves. The cable then runs along a triangle whose corners are formed by the two deflection pulleys and the drive pulley. The second cable section is larger than the first cable section. An embodiment in which such a cable tensioning element is arranged on the second cable section is particularly expedient.Since the second rope section is larger than the first rope section in this configuration, a larger longitudinal stroke can be achieved for the driver element in this configuration.

[0019] According to another advantageous embodiment, the first deflection pulley and the second deflection pulley can be arranged on the first guide rail. In particular, the drive coupling between the cable and the driver element can be established in the region of the first guide element, in particular on the first guide element, so that the drive forces are transmitted virtually parallel to the longitudinal direction, thus reducing or preventing tilting moments on the driver element. At the same time, this relieves the guide rails and the guide element of forces acting in the vertical and transverse directions.

[0020] Additionally or alternatively, the first guide element can be guided in the first guide slot in the transverse direction and in the vertical direction along the longitudinal direction. In other words, the first guide element or the first guide slot guides the driver element via the first guide element in the vertical direction and in the transverse direction during adjustment in the longitudinal direction. The transverse direction varies, while the vertical direction can be constant or invariant or also variable. Additionally or alternatively, it can also be provided that the second guide element in the second guide slot is movable in the vertical direction and is guided in the transverse direction along the longitudinal direction. In other words, the second guide element is only guided in the transverse direction in the second guide slot, while it has sufficient play in the vertical direction, for example to be able to compensate for thermal expansion effects.By decoupling the second guide element within the second guide slot with respect to the height direction, a high reliability of the cable drive is achieved, since in particular a possible tilting of the driver element does not result in jamming in the height direction between the two guide slots.

[0021] A wind deflector for a motor vehicle according to the invention is equipped with a flat air guide element that is adjustable relative to a vehicle body between a retracted passive position, in which the air guide element is integrated into an outer contour of the body, and an extended active position, in which the air guide element protrudes from the outer contour of the body. The wind deflector according to the invention is also equipped with a drive device of the type described above, the guide rails of which can be fixedly attached to the body and the driver element of which is fastened to the air guide element.

[0022] A motor vehicle according to the invention, which can in particular be a passenger car, comprises a body and at least one wind deflector of the type described above, wherein the guide rails of the respective drive device are fixedly mounted on the body. The respective wind deflector can be configured as a lateral wind deflector, such that, in the active position, it protrudes from the body with respect to a transverse direction of the vehicle. The drive device is then mounted on the body such that its transverse direction extends substantially parallel to the transverse direction of the vehicle.

[0023] Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures based on the drawings.

[0024] It is understood that the features mentioned above and those to be explained below can be used not only in the respective combination specified, but also in other combinations or on their own, without departing from the scope of the invention as defined by the claims. Components mentioned above and those to be mentioned below of a higher-level unit, such as a device, apparatus, or arrangement, which are designated separately, may form separate parts or components of this unit or be integral areas or sections of this unit, even if this is shown differently in the drawings.

[0025] Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally identical components.

[0026] They show, schematically, Fig. 1 a sectional view of a vehicle in the area of ​​a wind deflector in a passive position, Fig. 2 a view as in Fig. 1, but with the wind deflector in an active position, Fig. 3 a highly simplified schematic diagram of a drive device for driving the wind deflector in a first embodiment, Fig. 4 a view as in Fig. 3, but with a second embodiment of the drive device.

[0027] According to the Fig. 1 and Fig. 2, a motor vehicle 1, shown only partially here, comprises a body 2 on which at least one wind deflector 3 is arranged. The wind deflector 3 has a flat air guide element 4, which is arranged relative to the body 2 between a Fig. 1 reproduced retracted passive position and one in Fig. 2 shown extended active position. In the passive position according to Fig. 1, the air guide element 4 is integrated into an outer contour 5 of the body 2, so that the air guide element 4 does not form an interfering contour on the outer contour 5. In particular, the air guide element 4 can be recessed into the body 2 in the passive position and thus be flush. In the active position according to Fig. 2, the air guide element 4 protrudes from the outer contour 5 of the body 2 and, when the vehicle 1 is in operation, interacts with an air flow flowing around the vehicle 1 along the outer contour 5 in order to guide this air flow in a suitable manner. The wind deflector 3 can in particular be configured as a lateral wind deflector 3 which, in the active position, protrudes from the outer contour 5 in a transverse direction of the vehicle. Such a lateral wind deflector 3 can in particular be arranged on one of the sides of the vehicle, for example in order to improve the air flow around the vehicle 1 in the area of ​​the fenders. Likewise, such a lateral wind deflector can be arranged, for example, in the area of ​​a C-pillar and / or at the rear of the vehicle in order to improve the air flow around the vehicle and / or to improve the lateral stability of the vehicle 1.

[0028] The wind deflector 3 is equipped with a Fig. 3 and Fig. 4 shown drive device 6, which is configured to retract and extend the wind deflector 3 relative to the body 2. According to the Fig. 3 and Fig. 4, such a drive device 6 has a longitudinal direction X, a transverse direction Y and a height direction Z, which are perpendicular to each other. In the illustrations of the Fig. 3 and Fig. 4, the longitudinal direction X extends horizontally, while the height direction Z extends vertically. The transverse direction Y is perpendicular to the drawing plane.

[0029] The drive device 6 has a first guide rail 7 which extends in the longitudinal direction X and which has a first guide slot 8 which extends in the longitudinal direction X along the first guide rail 7 and varies in the transverse direction Y. In the example shown, the first guide slot 8 is constant or invariant in the vertical direction Z. The drive device 6 also has a second guide rail 9 which extends parallel to the first guide rail 7, i.e. also parallel to the longitudinal direction X, and which is spaced from the first guide rail 7 in the vertical direction Z. The second guide rail 9 has a second guide slot 10 which extends in the longitudinal direction X along the second guide rail 9 and varies in the transverse direction Y. The drive device 6 furthermore has a driver element 11 which is provided for coupling to the wind deflector 3.In the assembled state, the driver element 11 is drive-connected to the air guide element 4. The driver element 11 has a first guide element 12 that is adjustable in the first guide slot 8, and a second guide element 13 that is adjustable in the second guide slot 10. The guide rails 7, 9 are shown in the examples in FIG. Fig. 3 and Fig. 4 are each fastened to a carrier plate 14, with the aid of which the entire drive device 6 can be fastened to the body 2.

[0030] The drive device 6 is also equipped with a cable drive 15, which is configured to drive the driver element 11 relative to the guide rails 7, 9, such that the driven driver element 11 moves in the longitudinal direction X along the guide rails 7, 9. The cable drive 15 has a cable 16 firmly connected to the driver element 11 and a motor 17 for driving the cable 16. In the embodiments shown here, the cable drive 15 is configured as a closed cable pull 18, which is characterized in that the cable 16 runs in a closed loop, i.e., is designed to be virtually endless.

[0031] The cable drive 15 has a first deflection pulley 19, which is arranged in the region of a first longitudinal end 20 of the guide rails 7, 9 on the support plate 14. The first deflection pulley 19 is mounted on the support plate 14 so as to be rotatable about a first axis of rotation 21 running parallel to the transverse direction Y. The cable drive 15 also has a second deflection pulley 22, which is arranged in the region of a second longitudinal end 23 of the guide rails 7, 9 on the support plate 14. The second deflection pulley 22 is expediently mounted on the support plate 14 so as to be rotatable about a second axis of rotation 24 running parallel to the transverse direction Y. The cable 16 wraps around the first deflection pulley 19 and the second deflection pulley 22 by less than 360° each. In the example of the Fig. 3, the rope 16 wraps around both pulleys 19, 22 by approximately 180°. In the example of Fig. 4, the cable 16 wraps around the first deflection pulley 19 by approximately 90°, while it wraps around the second deflection pulley 23 by approximately 150°. The first deflection pulley 19 and the second deflection pulley 22 are arranged such that the cable 16 has a first cable section 25 which runs parallel to the longitudinal direction X and leads from the first deflection pulley 19 to the second deflection pulley 22. The driver element 11 is fastened to this first cable section 25. In the embodiments shown here, the first cable section 25 is fastened to the first guide element 12. In this way, the force is transmitted between the cable 16 and the driver element 11 with respect to the first guide rail 7 virtually free of moments about axes running parallel to the transverse direction Y.

[0032] The cable drive 15 also has a drive roller 26, which is driven in rotation by the motor 17. The drive roller 26 rotates about a rotation axis 27, which also preferably extends parallel to the transverse direction Y. The cable 16 wraps around the drive roller 26 by at least 360°. In the example of the Fig. 3, the cable 16 wraps around the drive pulley by approximately 360°. In the example of Fig. 4, the rope 16 wraps around the drive pulley by approximately 480°.

[0033] At the Fig. 3, the drive roller 26 is arranged in the region of the first longitudinal end 20 of the guide rails 7, 9 and in the region of the first deflection roller 19 on the support plate 14, in such a way that the cable 16 has a second cable section 28 which leads from the drive roller 26 to the second deflection roller 22 and which extends along a connecting straight line 29 which, on a side facing away from the first cable section 25, is tangent to, i.e., touches, the first deflection roller 19 and the second deflection roller 22. In the embodiments shown here, the two deflection rollers 19, 22 have the same diameter, so that the connecting straight line 29 extends parallel to the longitudinal direction X. Consequently, the second cable section 28 in the example of Fig. 3 parallel to the longitudinal direction X.

[0034] At the Fig. In the second embodiment shown in Figure 4, however, the drive roller 26 is spaced apart from the first deflection roller 19 in the vertical direction Z and is arranged in the region of the first longitudinal end 20 of the guide rails 7, 9 on the support plate 14, such that the cable 16 again has a second cable section 28 that leads from the drive roller 26 to the second deflection roller 22. In the second embodiment, however, this second cable section 28 is inclined relative to the longitudinal direction X and relative to the vertical direction Z.

[0035] Regardless of the two embodiments shown here, the cable drive 15 is also expediently equipped with a cable tensioning element 30, which is attached to the cable 16 and serves to keep the cable 16 under a predetermined minimum tension. For example, the two ends of the cable 16 can be held in the cable tensioning element 30 and pretensioned toward each other by means of a spring element.

[0036] At the Fig. 3, the cable tensioning element 30 is arranged on the first cable section 25. In contrast, in the first embodiment shown in Fig. 4, the cable tensioning element 30 is arranged on the second cable section 28. Since the cable tensioning element 30 cannot rotate around the deflection rollers 19, 22 or the drive roller 26, a maximum longitudinal stroke 31 is defined by the cable tensioning element 30, i.e. the maximum possible adjustment path for the driver element 11 or for the first guide element 12. To illustrate the longitudinal stroke 31, the first guide element 12 is shown in the Fig. 3 and Fig. 4 is additionally shown in a second end position and is designated 12'.

[0037] In the first embodiment according to Fig. 3, a maximum adjustment path 32 of the cable tensioning element 30 is limited by the first deflection roller 19 and the second deflection roller 22. Since the driver element 11 and the cable tensioning element 30 are attached to the first cable section 25, the maximum longitudinal stroke 30 of the driver element 11 or the first guide element 12 is equal to the maximum adjustment path 32 of the cable tensioning element 30. For illustration, Fig. 3 and Fig. 4 the cable tensioning element 30 is also shown in a second end position and is designated there with 30'.

[0038] At the Fig. 4, the cable tensioning element 30 is now attached to the second cable section 28, so that its maximum adjustment path 32 is determined by the distance between the drive roller 26 and the second deflection roller 22. Due to the inclination between the second cable section 28 and the first cable section 25, the maximum longitudinal stroke 31 of the driver element 11 or the first guide element 12 is correspondingly smaller than the adjustment path 32. Since in this second embodiment the drive roller 26 has a greater distance from the second deflection roller 22 in the longitudinal direction X than in the embodiment shown in Fig. 3, the second longitudinal section 28 in the second embodiment is significantly larger than in the first embodiment, so that in the Fig. 4, a larger longitudinal stroke 31 can be realized for the driver element 11 than in the first embodiment according to Fig. 3.

[0039] In both embodiments, the two deflection rollers 19, 22 are arranged on the first guide rail 7, so that the largely torque-free force transmission between the cable 16 and the first guide element 12 described above can be realized.

[0040] In the examples of Fig. 3 and Fig. 4, the cable 16 moves when adjusting the driver element 11 from the position in the Fig. 3 and Fig. 4, which corresponds, for example, to the passive position of the wind deflector 3 or the air guiding element 4, into an end position, which then corresponds to the active position of the wind deflector 3 or the air guiding element 4. This end position is indicated by the longitudinal stroke 31 and the correspondingly adjusted first guide element 12'. This results in a direction of movement 33 in the cable 16, indicated by arrows, and in the two deflection rollers 19, 22, a direction of rotation 34, indicated by arrows, which in the Fig. 3 and Fig. 4 is oriented counterclockwise. Fig. In the first embodiment shown in Figure 3, the drive roller 26 is located on a side of the second cable section 28 facing away from the first cable section 25. As a result, the cable 16 can be wrapped around the drive roller 26 in such a way that a direction of rotation 35 is set for the direction of movement 33 of the cable 16, which is opposite to the directions of rotation 34 of the two deflection rollers 19, 22. In the embodiment shown in Fig. In the first embodiment shown in Figure 3, the direction of rotation 35 of the drive roller 36 is clockwise. Fig. In the second embodiment shown in Figure 4, the drive roller 26 is arranged on a side of the second cable section 28 facing the first cable section 25, so that the wrapping of the drive roller 26 with the cable 16 can be selected such that the drive roller 26 rotates in the same direction as the deflection rollers 19, 22. In Fig. 4, the direction of rotation 35 of the drive roller 26 is therefore also oriented counterclockwise.

[0041] In the Fig. 3 and Fig. 4 it is indicated that the first guide element 12 is guided in the first guide slot 8 in the transverse direction Y and in the vertical direction Z along the longitudinal direction X. In contrast, the second guide element 13 in the second guide slot 10 is movable in the vertical direction Z and is only guided in the transverse direction Y along the longitudinal direction X. As a result, the driver element 11 can tilt about a tilting axis running parallel to the transverse direction Y without the driver element 11 becoming jammed in the two guide slots 8, 10. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2017 004 964 B4

[0002] DE 10 2019 114 702 A1

[0003] US 10 829 158 B2

[0004] FR 28 54 860 B1

[0005]

Claims

[1] Drive device (6) for retracting and extending a wind deflector (3) of a motor vehicle (1), - with a longitudinal direction (X), a transverse direction (Y) and a height direction (Z) which are perpendicular to each other, - with a first guide rail (7) extending in the longitudinal direction (X) and having a first guide slot (8) extending in the longitudinal direction (X) along the first guide rail (7) and varying in the transverse direction (Y), - with a second guide rail (9) which extends parallel to the first guide rail (7), which is spaced apart from the first guide rail (7) in the vertical direction (Z) and which has a second guide slot (10) which extends in the longitudinal direction (X) along the second guide rail (9) and varies in the transverse direction (Y), - with a driver element (11) for coupling to the wind deflector (3), which has a first guide element (12) which is adjustable in the first guide slot (8) and a second guide element (13) which is adjustable in the second guide slot (10), - with a cable drive (15) for driving the driver element (11) relative to the guide rails (7, 9), so that the driver element (11) moves in the longitudinal direction (X) along the guide rails (7, 9), - wherein the cable drive (15) has a cable (16) firmly connected to the driver element (11) and a motor (17) for driving the cable (16). [2] Drive device (6) according to claim 1, characterized by , - that the cable drive (15) is configured as a closed cable pull (18) in which the cable (16) runs in a closed manner. [3] Drive device (6) according to claim 1 or 2, characterized by , - that the cable drive (15) has a first deflection roller (19) which is arranged in the region of a first longitudinal end (20) of the guide rails (7, 9), and a second deflection roller (22) which is arranged in the region of a second longitudinal end (23) of the guide rails (7, 9), - that the rope (16) wraps around the first pulley (19) and the second pulley (22) by less than 360°, - that the first deflection pulley (19) and the second deflection pulley (22) are arranged such that the cable (16) has a first cable section (25) running parallel to the longitudinal direction (X) and leading from the first deflection pulley (19) to the second deflection pulley (22), to which the driver element (11) is fastened. [4] Drive device (6) according to claim 3, characterized by , - that the cable drive (15) has a drive roller (26) driven in rotation by the motor (17), - that the cable (16) wraps around the drive roller (26) by at least 360°. [5] Drive device (6) according to claim 4, characterized by , - that the drive roller (26) is arranged in the region of the first longitudinal end (20) of the guide rails (7, 9) and in the region of the first deflection roller (19) such that the cable (16) has a second cable section (28) leading from the drive roller (26) to the second deflection roller (22), which second cable section extends along a connecting straight line (29) which is tangent to the first deflection roller (19) and the second deflection roller (22) on a side facing away from the first cable section (25), - that a cable tensioning element (30) is arranged on the first cable section (25). [6] Drive device (6) according to claim 5, characterized by , - that the two deflection pulleys (19, 22) have the same diameter, so that the connecting straight line (29) and the second cable section (28) extend parallel to the longitudinal direction (X). [7] Drive device (6) according to claim 4, characterized by , - that the drive roller (26) is spaced apart from the first deflection roller (19) in the vertical direction (Z) and is arranged in the region of the first longitudinal end (20) of the guide rails (7, 9) such that the cable (16) has a second cable section (28) leading from the drive roller (26) to the second deflection roller (22), which runs inclined to the longitudinal direction (X) and inclined to the vertical direction (Z), - that a cable tensioning element (30) is arranged on the second cable section (28). [8] Drive device (6) according to one of claims 3 to 7, characterized by , - that the first deflection roller (19) and the second deflection roller (22) are arranged on the first guide rail (7), and / or - that the first guide element (12) is guided in the first guide slot (8) in the transverse direction (Y) and in the vertical direction (Z) along the longitudinal direction (X), and / or - that the second guide element (13) is movable in the second guide slot (10) in the vertical direction (Z) and is guided in the transverse direction (Y) along the longitudinal direction (X). [9] Wind deflector (3) for a motor vehicle (1), - with a flat air guide element (4) which is adjustable relative to a body (2) of the motor vehicle (1) between a retracted passive position, in which the air guide element (4) is integrated into an outer contour (5) of the body (2), and an extended active position, in which the air guide element (4) protrudes from the outer contour (5) of the body (2), - with a drive device (6) according to one of the preceding claims, the guide rails (7, 9) of which can be fixedly attached to the body (2) and the driver element (11) of which is fastened to the air guide element (4). [10] Motor vehicle (1), in particular passenger car, - with a body (2), - with at least one wind deflector (3) according to claim 9, - wherein the guide rails (7, 9) of the respective drive device (6) are fixedly mounted on the body (2).

Images