Air guiding element and motor vehicle comprising the same

Abstract

The invention relates to an air guide element (5) having a surface element (4) and a longitudinally movable carrier element (6), the surface element (4) being articulated to the carrier element (6) in a movably mounted manner, and further having a drive element (10) with a gearing (12), wherein the carrier element (6) can be driven in a longitudinally displaceable manner by means of the gearing (12) such that a rack (14) of the gearing (12) is drivably connected to the drive element (10) via a spur gear and the rack (14) is in driving connection with the carrier element (6).

Description

Technical Field

[0001] The invention relates to an air-guiding element and to a motor vehicle comprising an air-guiding element. Background Art

[0002] In motor vehicles, it is well known that when the motor vehicle is traveling in a forward direction, an air flow flows around the motor vehicle from front to rear. This air flow results in a lateral flow around the motor vehicle and a flow around the rear of the motor vehicle. At the rear, a so-called wake of the flow, i.e. an outflow, occurs around the vehicle, which increases the air resistance of the motor vehicle.

[0003] In order to influence the lateral flow around a motor vehicle at the rear of the vehicle, DE 10 2015 121 785 A1 discloses air guide elements which are laterally configured on the rear of the vehicle so that they can be extended in a linearly movable manner, thereby protruding laterally and extending the rear of the vehicle to influence the air flow and thus reduce the air resistance. The air guide element is thus extended from the rear of the vehicle in an extension direction and is accordingly placed in the air flow. This limits the influence on the air flow to the positioning of the air guide element, since this positioning is caused by a linear extension movement, which means that the limitation of the reduction of the air resistance is undesirable. Summary of the invention

[0004] The object of the present invention is to create an air-guiding element and a motor vehicle comprising an air-guiding element which are able to better reduce the air resistance resulting from lateral flows.

[0005] An exemplary embodiment of the invention relates to an air guiding element having a surface element and a longitudinally displaceable support element, wherein the surface element is articulated to the support element in a movably supported manner, and further comprising a drive element with a gear mechanism, wherein the support element can be driven longitudinally displaceably by means of the gear mechanism, so that a toothed rack of the gear mechanism is connected to the drive element in a drivable manner via a spur gear and the toothed rack is in driving connection with the support element. As a result, the support element can be safely and reliably arranged in a small installation space in a displaceable manner, wherein the surface element can be displaced together with the support element and can be moved into the air flow as required.

[0006] It is particularly advantageous if the support element is mounted in a longitudinally displaceable manner in a side or tail part of the motor vehicle, in particular in a side or tail part of the rear of the motor vehicle. This makes it possible to influence the flow around the motor vehicle at the rear by arranging the air guide element laterally at the rear of the vehicle in an adjustable manner, in particular by arranging two such air guide elements laterally at the rear of the vehicle.

[0007] It is also advantageous if the surface element is arranged to be movable through an opening in the side or rear part. This protects the interior area of ​​the rear of the vehicle from dust, water etc., and the air guiding element can still be arranged to be extendable to influence the flow, while the carrier element and the drive element can be arranged to be protected.

[0008] It is also advantageous if the surface element is arranged such that it can be displaced relative to the support element by means of at least one guide rail. This means that the surface element can be arranged not only to be displaceable longitudinally, but also to be displaced or pivoted laterally relative to the longitudinal movement. For example, the longitudinally displaceable path of the support element and the longitudinally displaceable path of the surface element do not necessarily have to be designed as a straight line, but can also be provided as a curved path, for example an arc-shaped path. A deviation intended for the longitudinal movement of the surface element can be achieved by means of the guide rail, for example in order to enable an angle or tilt at the end of the longitudinal movement.

[0009] It is also advantageous if the carrier element has at least one guide rail, wherein at least one slide block is arranged connected to the surface element, the at least one slide block being displaceably arranged in the at least one guide rail. By guiding the at least one slide block in the at least one guide rail, the surface element can be pivoted or tilted.

[0010] It is also useful if the surface element can be moved or pivoted relative to the opening when at least one slide is displaced in the guide rail. It is particularly advantageous if the surface element is guided through a fixed opening and can be pivoted at or through the fixed opening. This allows tilting and displacement relative to the longitudinal movement to achieve a more suitable arrangement in the air flow, thereby achieving improved air flow control and improved drag reduction.

[0011] An exemplary embodiment of the invention relates to a motor vehicle having at least one air-guiding element according to the invention, in particular having two air-guiding elements.

[0012] It is also advantageous if the air guiding elements are arranged on opposite sides on the side parts or tail parts of the rear region of the motor vehicle. Thus, the flow around the rear region can be influenced on both sides of the motor vehicle in order to improve air resistance.

[0013] It is particularly advantageous if at least one air guiding element is longitudinally movable along a straight, angled, curved or arcuate path. This allows the available installation space to be well utilized for the arrangement and movement of the support element and the surface element.

[0014] It is also advantageous if the support element and the drive element with the spindle mechanism are arranged in the side part or the tail part and if the surface element can be moved through an opening in the side part or the tail part.

[0015] Hereinafter, the present invention is described in detail based on exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic perspective illustration of the rear of a vehicle and the lateral flow around the rear of the vehicle without the air guiding element being extended,

[0017] Figure 2 Yes Figure 1 Another schematic perspective view of the rear of a vehicle is shown without extending the air guiding element,

[0018] Figure 3 is a schematic perspective illustration of a vehicle rear end with a projecting surface element of an air guiding element according to the invention and of the lateral flow around the vehicle rear end,

[0019] Figure 4 Yes Figure 3 Another schematic perspective view of the rear of a vehicle is shown with the surface elements of the air guiding element extended,

[0020] Figure 5 is another schematic perspective view of the rear of a vehicle with the air guiding element extended,

[0021] Figure 6 is a schematic perspective view of an air guiding element according to the invention having a surface element and a carrier element,

[0022] Figure 7 is a schematic perspective view of an air guiding element according to the invention, with the surface element and the carrier element in the retracted operating position,

[0023] Figure 8 is a schematic perspective view of an air guiding element according to the invention, with the surface element and the carrier element in the extended operating position,

[0024] Fig. 9 is a schematic perspective view of an air guiding element according to the invention, with the surface element, the carrier element and the drive element in the extended operating position, and

[0025] Fig.10 Yes Fig. 9 A further schematic perspective view of an air guiding element according to the invention is shown, but without the surface element. DETAILED DESCRIPTION

[0026] Figure 1 and Figure 2 The side of the vehicle rear 2 of a motor vehicle 1 without air guiding elements is shown, wherein the lateral flow around the vehicle rear 2 when driving in the forward direction is Figure 1 This is indicated by arrows 3. It can be seen that the air flowing laterally past the motor vehicle 1 flows inwards behind the rear part 2 of the vehicle, thus increasing the air resistance.

[0027] Figure 3 and Figure 4 The side of the vehicle rear 2 of the motor vehicle 1 is shown, which has a protruding surface element 4 of an air guiding element 5, wherein the lateral flow around the vehicle rear 2 when driving in the forward direction is Figure 3 It can be seen that the air flowing laterally past the motor vehicle 1 is deflected outwards behind the vehicle rear end 2 by the surface elements 4 of the air guiding element 5, so that the air does not flow in the rear end as it would without the surface elements of the air guiding element. Figure 1 As can be seen in the figure, it flows so far inward that Figure 3 The air resistance in the running state is lower than Figure 1 Air resistance for the indicated operating conditions.

[0028] Figure 5 The rear part 2 of the motor vehicle 1 is shown again, with the surface element 4 of the air guiding element 5 extended, wherein the surface element 4 can be seen in its extended state.

[0029] according to Figure 6 The surface element 4 is displaceably guided on a support element 6 which can be moved by a drive element. The surface element 4 is displaceably arranged in a side part 7 or a rear part 8 of the vehicle rear part 2 and can be guided out through a narrow opening 9 so that it is located in the air flow and can influence the flow around the vehicle rear part 2.

[0030] Figures 6 to 10 An exemplary embodiment of an air-guiding element 5 according to the invention is shown, which has a surface element 4 and a longitudinally displaceable support element 6 .

[0031] The support element 6 can be displaced along the guide 11 by means of a drive element 10 , wherein the drive element 10 can displace the support element 6 back and forth between two end positions.

[0032] The surface element 4 is articulated to the support element 6 in a movably supported manner, so that the surface element 4 can be longitudinally displaced together with the support element 6 , but further displacement of the surface element 4 relative to the support element 6 is still possible.

[0033] The drive element 10 has a gear transmission 12, wherein the carrier element 6 can be driven in a longitudinally movable manner by means of the gear transmission 12. The drive element 10 is connected to a gear 13 of the gear transmission 12 so that it can be driven in rotation, and the carrier element 6 comprises a rack 14 of the gear transmission 12, which is connected to the carrier element 6. The gear 13 meshes with the rack 14, and when the gear 13 rotates, the rack 14 is linearly displaced, see Figure 8 .

[0034] Figure 7 The surface element 4 is shown arranged in the retracted operating position, and Fig. 9 The surface element 4 is shown arranged in the extended operating position.

[0035] The support element 6 is arranged in a longitudinally displaceable manner supported in a side part 7 or a rear part 8 of the motor vehicle 1, in particular in the rear of the motor vehicle, wherein the surface element 4 is arranged displaceably through an opening 9 in the side part 7 or the rear part 8, see also Figure 5 In the retracted operating position, the surface element 4 is concealed in the side part 7 or the tail part 8, such as Figure 1 and Figure 2 As shown, and in the extended state, the surface element 4 extends, as shown Figures 3 to 5 shown.

[0036] exist Figure 7 1 , it can also be seen that the surface element 4 is arranged displaceably on the guide rails 15. The guide rails 15 are arranged on a housing 16, wherein at least one slide 17 is arranged connected to the surface element 4, wherein at least one slide 17 is arranged displaceably in at least one guide rail 15. Thus, in addition to the displacement of the surface element 4 by means of the longitudinal movement of the support element 6, a relative mobility of the surface element 4 relative to the support element 6 is also achieved. The movement path of the surface element 4 relative to the support element 6 is determined by the geometry of the guide rails 15.

[0037] When the at least one slide 17 is displaced in the slide path 15 , the surface element 4 can be moved or pivoted relative to the support element 6 and the opening 9 .

[0038] Figures 1 to 5 The motor vehicle 1 of FIG. 1 shows only one surface element 4 on one side of the vehicle rear 2 , wherein the air guiding elements 5 are advantageously arranged on opposite sides of the motor vehicle 1 on side parts 7 or rear parts 8 in the rear region of the motor vehicle 1 . This applies to both exemplary embodiments.

[0039] In the example embodiments, it can also be seen that at least one surface element 4 of the air guiding element 5 can be moved approximately longitudinally along a straight, curved or arcuate path. In the figures of the two example embodiments, it can be seen that the path is arcuate. However, the path can also be straight or configured in some other way.

[0040] Reference numerals list

[0041] 1 Motor Vehicles

[0042] 2 Rear of vehicle

[0043] 3 Arrows

[0044] 4-sided element

[0045] 5 Air guide element

[0046] 6 Load-bearing components

[0047] 7 Side parts

[0048] 8 Tail piece

[0049] 9 Opening

[0050] 10. Driving element

[0051] 11 Guide

[0052] 12 Gear transmission

[0053] 13 Gear

[0054] 14 Rack

[0055] 15 Slide rail

[0056] 16 Housing

[0057] 17 Sliders

Claims

1. An air guiding element (5), comprising a surface element (4) and a longitudinally movable supporting element (6), wherein the surface element (4) is articulated to the supporting element (6) in a movably supported manner, and the air guiding element also comprises a drive element (10) with a gear transmission (12), wherein the supporting element (6) can be driven in a longitudinally movable manner by means of the gear transmission (12), so that a rack (14) of the gear transmission (12) is connected to the drive element (10) in a drivable manner via a spur gear and the rack (14) is in driving connection with the supporting element (6).

2. The air guiding element (5) according to claim 1, characterized in that The support element (6) is mounted in a longitudinally displaceable manner in a side part (7) or a tail part (8) of the motor vehicle (1), in particular in a side part or a tail part of the rear of the motor vehicle.

3. The air guiding element (5) according to claim 2, characterized in that The surface element (4) is arranged to be movable through an opening (9) of the side piece (7) or the rear piece (8).

4. The air guiding element (5) according to claim 1, 2 or 3, characterized in that The surface element (4) is arranged to be displaceably guided relative to the support element (6) by means of at least one guide rail (15).

5. The air guiding element (5) according to claim 4, characterized in that At least one slide block (17) is arranged connected to the surface element (4), wherein the at least one slide block (17) is arranged displaceably in the at least one slide rail (15).

6. Air guiding element (5) according to any one of the preceding claims, characterized in that The surface element (4) is arranged to be movable or pivotable relative to the carrier element (6) and / or the opening (9) when the at least one slide (17) is displaced in the guide rail (15).

7. A motor vehicle (1) having at least one air-guiding element (5) according to any one of the preceding claims, in particular having two air-guiding elements (5).

8. A motor vehicle (1) according to claim 7, characterised in that The air guiding element (5) is arranged on two opposite sides on a side part (7) or a rear part (8) in the rear region of the motor vehicle (1).

9. A motor vehicle (1) according to claim 7 or 8, characterised in that The at least one air guiding element (5) is longitudinally movable along a straight, angled, curved or arcuate track.

10. A motor vehicle (1) according to any one of the preceding claims 7 to 9, characterised in that The support element (6) and the drive element (10) with the gear transmission (12) are arranged in the side part (7) or the rear part (8), and the surface element (4) can be moved through an opening (9) in the side part (7) or the rear part (8).

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