Air guidance system for a motor vehicle

Abstract

Air guidance device (1) for a motor vehicle (100), in particular a passenger car (101), with two wing components (2, 3), one of which is designed as a rear wing (12) and one of which is designed as a wing support device (13) for holding the rear wing (12) and for transmitting the forces acting on the rear wing (12), wherein the rear wing (12) and the wing support device (13) are connected to each other via connecting components (5, 6, 7), characterized by that a first of the connecting components (5) are designed as a trough-shaped receiving device (15) on one wing component (12) and a second connecting component (6) cooperating with it as a hammer component (16) on the other wing component (13), and that the hammer component (16) has a hammer handle (17) and a hammer head (18) connected thereto and extending transversely thereto, which is received in the trough-shaped receiving device (15), and that the hammerhead (18) has an elongated and essentially cylindrical body (20) and that the hammerhead (18) is rounded at both lateral ends (21, 22) and has an essentially hemispherical shape at both lateral ends (21, 22).

Description

[0001] The present invention relates to an air guiding device for a motor vehicle and in particular a passenger car, wherein the air guiding device comprises two wing components, one of which is designed as a rear wing and one as a wing support device.

[0002] Essentially, DE 10 2009 021 984 A1 describes a hammer-head bolt for fastening components to one another. This bolt consists of a hammer head for fastening in a C-shaped anchor rail and a threaded screw shaft. The hammer head of the hammer-head bolt is connected to the screw shaft of the fastening screw via a welded joint.

[0003] DE 10 2010 004 561 A1 discloses a passenger vehicle with a rear-mounted air deflector. The air deflector is designed as a wing or spoiler blade and is mounted at the rear of the vehicle. A bearing element connects a deployer to the air deflector. The bearing element is suspended in the air deflector in a first area and connected to the air deflector in a second area by means of a screw connection.

[0004] DE 10 2011 001 054 A1 discloses a motor vehicle with a rear-mounted air deflector. The air deflector is mounted on a device, with a spherical socket formed on the device and a ball stud formed on the air deflector, which engage with each other. Furthermore, the air deflector is connected to the device for receiving and securing the air deflector by adjustable spacers.

[0005] DE 10 2012 223 815 A1 shows a fastening for a spoiler plate to a vehicle front panel by means of pins which extend through slots, whereby a sliding movement between the vehicle front panel and the spoiler plate is possible in the event of an impact.

[0006] The object of the present invention is to provide an air guiding device for a motor vehicle, in particular a passenger car, and particularly preferably for a sports car, which enables improved positioning accuracy and, in particular, the most optimal force and torque absorption and transmission possible. In particular, force-free assembly is to be enabled.

[0007] This object is achieved by an air guiding device for a motor vehicle, in particular a passenger car, and preferably a sports car, having the features of claim 1. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the present invention will become apparent from the general description and the description of an exemplary embodiment.

[0008] An air guiding device according to the invention for a motor vehicle, and in particular a passenger car and preferably a sports car, comprises at least two wing components, of which one wing component is designed as a rear wing and one wing component as a wing support device for holding the rear wing and for transmitting the forces acting on the rear wing. The rear wing and the wing support device are connected to one another in a defined manner via connecting components. A first of the connecting components is designed as a trough-shaped receiving device on one wing component, and a second connecting component interacting therewith is designed as a hammer component on the other wing component. The hammer component comprises a hammer handle and a hammer head connected to it and extending transversely thereto. The hammer head is received in the trough-shaped receiving device (in particular with a precise fit).The hammer head has an elongated and essentially cylindrical body. The hammer head is rounded at both lateral ends. The hammer head has a substantially hemispherical shape at each of its lateral ends.

[0009] The air guiding device according to the invention has many advantages. A significant advantage of the air guiding device according to the invention is that the rear wing is (precisely) mounted on the air guiding device. This achieves high positioning accuracy in the longitudinal, transverse, and vertical directions. By mounting the hammer component on the trough-shaped mounting device, force-free assembly can be achieved.

[0010] The invention allows for a requirement-optimized design of the force-transferring connection point between the rear wing and the wing support device. This provides an air guiding device that is designed, in particular, as a rear spoiler and in which the forces absorbed by the rear wing are optimally dissipated via the wing support device, which is designed, in particular, as a spoiler support. Optimum force and torque absorption and correspondingly optimal dissipation of the forces and torques are achieved.

[0011] The invention enables an advantageous design through the use of a hammer component that interacts with a trough-shaped receiving device that is preferably precisely adapted to it. This ensures high positioning accuracy and optimal force and torque absorption and transmission.

[0012] According to the invention, the hammer head has an elongated body. In particular, the elongated body of the hammer head extends in the transverse direction of the motor vehicle, while the hammer handle of the hammer component extends substantially or entirely in the longitudinal direction.

[0013] Preferably, the body of the hammer head is substantially round over a circumferential angle of at least 150°. Preferably, the body of the hammer head is substantially round or completely round over at least an angle of 180°, 190°, 200°, or more. Such configurations enable a pivoting movement of the two wing components relative to each other when, during assembly, the wing component with the hammer component is inserted into the trough-shaped receiving device on the other wing component.

[0014] According to the invention, the body of the hammer head is substantially cylindrical. For example, the body of the hammer head can be substantially or completely cylindrical over its substantial length. It is possible and particularly preferred for the body of the hammer head to have a flattened edge on the side of the hammer handle.

[0015] According to the invention, the hammer head is rounded at both lateral ends. The hammer head has a substantially hemispherical shape at each of the two lateral ends. It is also possible for the hammer head to have a completely hemispherical shape at each of the two lateral ends.

[0016] A rounded and, in particular, hemispherical design of the two lateral ends of the hammer head enables particularly high positioning accuracy of the two wing components relative to each other. This allows for particularly high levels of fit and reproducibility during assembly. Preferably, the trough-shaped receiving device is adapted to the dimensions of the hammer head.

[0017] The hemispherical design of the ends of the hammer head allows for lateral guidance and precise positioning of the hammer head in the trough-shaped receiving device. At the same time, after inserting the hammer component and hammer head into the trough-shaped receiving device, the hammer component can still be pivoted around the longitudinal axis of the cylindrical body of the hammer head.

[0018] Preferably, the trough-shaped receiving device is arranged on the underside of the rear wing when installed as intended. This allows for a visually attractive design.

[0019] Preferably, the trough-shaped receiving device and the hammer component are fastened together in a region closer to a first end of the rear wing. It is also preferred that the rear wing and the wing support device are connected to each other in a region closer to a second end of the rear wing. At the second end of the rear wing, the rear wing and the wing support device are preferably screwed together. However, it is also possible for the two wing components to be glued, riveted, or otherwise connected to each other at the second end of the rear wing or in a region closer to the second end of the rear wing.

[0020] Preferably, the first end and the second end of the rear wing are spaced apart from each other in the longitudinal direction of the vehicle. Preferably, the rear wing extends at least substantially in the transverse direction of the vehicle.

[0021] In all embodiments, it is preferred that the rear wing be adjustable. In particular, the rear wing is adjustable in height and / or inclination. Particularly preferably, a drive or at least one drive is provided for this purpose in order to be able to adjust the rear wing appropriately depending on the current driving situation.

[0022] In all embodiments, it is preferred that the trough-shaped receiving device is part of an insert. In particular, the trough-shaped receiving device is formed as a forged part and / or is machined or reworked. It is preferred that the rear wing is essentially made of a lighter material and that the trough-shaped receiving device made of a more stable material is mounted thereon.

[0023] The hammer head positions the rear wing in the trough-shaped receiving device, preferably in a lateral direction, in a reproducible manner.

[0024] In all embodiments, it is preferred that the trough-shaped receiving device is positioned adjacent to an aerodynamic pressure point. Such an aerodynamic pressure point arises from the load of the air flow on the air guiding device while driving. By positioning the trough-shaped receiving device adjacent to the aerodynamic pressure point, optimal force dissipation is enabled. "Adjacent" means that the trough-shaped receiving device is positioned near or at the aerodynamic pressure point. The distance between the trough-shaped receiving device and an aerodynamic pressure point is preferably less than 1 / 4 and in particular less than 1 / 8 of the length of the rear wing in the longitudinal direction of the motor vehicle.

[0025] It is possible and preferred that the rear wing extending in the laterally direction is equipped with a separate wing support device at two or more laterally spaced locations.

[0026] Overall, the invention provides an air guiding device, particularly for sports cars, with a requirement-optimized design of the force-transmitting connection point between the rear wing or rear spoiler and a force-transmitting wing component, such as a wing or spoiler support. This achieves high positioning accuracy of the components in the longitudinal, transverse, and vertical directions. This design enables force-free assembly.

[0027] Another significant advantage is that it enables high connection rigidity in the transverse direction. In advantageous embodiments, the hammer head of the hammer component has the basic shape of a horizontally lying cylinder with hemispherical ends on both sides. The forces introduced into the cylindrical body of the hammer head are transferred via the hammer handle into the wing support device and finally into the body of the vehicle in a frictionally optimized manner. The hemispherical ends ensure precise and reproducible positioning in the transverse direction. The trough-shaped receiving device can be designed as a forged part with a near-net shape. It is also possible for the trough-shaped receiving device to be manufactured by mechanical machining. The majority of the force flow during operation is transferred from the rear wing through the trough-shaped receiving device and the hammer component towards the body.A geometric position of the connection point of the trough-shaped receiving device and the hammer component is preferably selected so that it is located at or near the aerodynamic pressure point.

[0028] Further advantages and features of the present invention will become apparent from the embodiment which will be explained below with reference to the accompanying figures.

[0029] The figures show: Fig. 1 a highly schematic representation of a motor vehicle; Fig. 2 a longitudinal section through the air guiding device of the motor vehicle according to Fig. 1; and Fig. 3 a highly schematic plan view of the hammer component of the air guiding device according to Fig. 2.

[0030] In Fig. Figure 1 depicts a highly schematic illustration of a motor vehicle 100, which is designed as a passenger car 101, and in particular as a sports car. The motor vehicle 100 has an air deflector 1 in the outlined area, which is designed in particular as a rear wing device or rear spoiler. The air deflector 1 can be designed to be adjustable, in particular during operation of the motor vehicle 100, and can be adjusted differently, for example, depending on different driving situations.

[0031] Fig. 2 shows a longitudinal section through the air guiding device 1 of the motor vehicle 100 from Fig. 1. The air guiding device 1 is shown in the section according to Fig. 2 two wing components 2 and 3 are visible, wherein the wing component 2 is designed as a rear wing 12 and the wing component 3 is designed as a wing support device 13 for absorbing and dissipating the forces and moments occurring during operation.

[0032] The air guiding device 1 extends from a first end 10 to a second end 11, wherein the first end 10 and the second end 11 extend in the longitudinal direction 9 (see Fig. 3) of the motor vehicle are arranged at a distance from each other. It is possible for the first end 10 (or the second end 11) to be located further back or further forward.

[0033] The rear wing 12 is essentially made of a lightweight material and is aerodynamically designed. On the side of the rear wing 12 that is located on the underside 14 of the rear wing 12 during operation, two inserts 24 and 28 are mounted on the rear wing 12. Each insert is made of a stable material and can therefore also be made of a heavier material. The insert 24 can, for example, be formed as a metal forged part. It is also possible for the insert 24 to be made of a metal and to be formed into the desired shape, for example, by mechanical or machining.

[0034] Here, a trough-shaped receiving device 15 is formed on the insert 24, which serves to receive the hammer head 18 of a hammer component 16. For this purpose, an inner contour of the trough-shaped receiving device 15 is preferably adapted to an outer contour of the body 20 of the hammer head 18. In particular, the inner contour of the trough-shaped receiving device 15 is designed in the shape of a circular segment or rounded and enables the precise insertion of the hammer head 18 of the hammer component 16 into the trough-shaped receiving device 15, so that after insertion, a defined seat in the lateral direction 8 (cf. Fig. 3) and in height.

[0035] After insertion, pivoting around the central axis of the hammer head 18 is still possible until the connecting component 7, designed here as a screw, can be screwed into a corresponding internal thread on the insert 28 at the second end 11 of the air guiding device 1. The rear wing 12 and the wing support device 13 are then firmly connected to one another. Before the connecting component 7 is screwed tight, the finger 26 on the wing support device 13, which engages in the recess 27 of the rear wing 12, already secures the connection between the rear wing 12 and the wing support device 13. Overall, a force-free assembly is enabled.

[0036] It is particularly advantageous that a precise positioning of the rear wing 12 on the wing support device 13 is provided in the longitudinal direction and in the transverse direction and also in the height direction.

[0037] In Fig.Figure 3 is a highly schematic plan view of the hammer component 16, depicting the highly schematically depicted hammer handle 17 and the hammer head 18 extending transversely thereto at the end of the hammer handle 17. The hammer head 18 has an elongated body 20, at each of whose ends a hemispherical end 21 and 22 is formed. The elongated body 20 here has a cylindrical cross-section 25. Such a cross-section is easy to manufacture and enables the hammer component to be pivoted precisely relative to the trough-shaped receiving device 15. However, it is also possible for the body 20 of the hammer head 18 to be approximately semi-cylindrical and to have a flattened body edge in the direction of the hammer handle 17. In this case, the two ends 21, 22 can have a corresponding configuration, for example, of a quarter sphere.

[0038] The specific design of the trough-shaped receiving device 15 as connecting component 5 and the hammer component 16 as connecting component 6 enables a precise assembly and optimal force absorption and force dissipation.

[0039] The air guiding device 1 has in particular a drive device in order to adjust the air guiding device 1 in its height and / or its angle. List of reference symbols 1 air guiding device 2 wing components 3 wing component 4 wing component 5 Connection component 6 Connection component 7 Connection component 8 lateral direction, transverse direction 9 Longitudinal direction 10 first end of 12 11 second end of 12 12 rear wings 13 Wing support device 14 Bottom 15 trough-shaped receiving device 16 Hammer component 17 Hammer handle 18 Hammerhead 19 aerodynamic pressure point 20 elongated body 21 hemispherical end 22 hemispherical end 24 deployment 25 cylindrical cross-section 26 fingers 27 Recess 28 deployment 50 rear wing assembly 100 motor vehicles 101 passenger cars

Claims

[1] Air guiding device (1) for a motor vehicle (100), in particular a passenger car (101), with two wing components (2, 3), of which one wing component (2) is designed as a rear wing (12) and one wing component (3) is designed as a wing support device (13) for holding the rear wing (12) and for transmitting the forces acting on the rear wing (12), wherein the rear wing (12) and the wing support device (13) are connected to one another via connecting components (5, 6, 7), characterized by , that a first of the connecting components (5) is designed as a trough-shaped receiving device (15) on one wing component (12) and a second connecting component (6) cooperating therewith is designed as a hammer component (16) on the other wing component (13), and that the hammer component (16) has a hammer handle (17) and a hammer head (18) connected thereto and extending transversely thereto, which is received in the trough-shaped receiving device (15), and that the hammer head (18) has an elongated and substantially cylindrical body (20) and that the hammer head (18) is rounded at both lateral ends (21, 22) and has a substantially hemispherical design at each of the two lateral ends (21, 22). [2] Air guiding device (1) according to the preceding claim, wherein the body (20) is substantially round over a circumferential angle of at least 150°. [3] Air guiding device (1) according to one of the preceding claims, wherein the trough-shaped receiving device (15) is arranged on an underside (14) of the rear wing (12) in a properly installed state. [4] Air guiding device (1) according to one of the preceding claims, wherein the trough-shaped receiving device (15) and the hammer component (16) are fastened to one another in a region closer to a first end (10) of the rear wing (12). [5] Air guiding device (1) according to one of the preceding claims, wherein the rear wing (12) and the wing support device (13) are connected to one another in a region closer to a second end (11) of the rear wing (12). [6] Air guiding device (1) according to one of the preceding claims, wherein the rear wing (12) is adjustable. [7] Air guiding device (1) according to one of the preceding claims, wherein the trough-shaped receiving device (15) is part of an insert (24) and is designed as a forged part and / or is mechanically machined. [8] Air guiding device (1) according to one of the preceding claims, wherein the hammer head (18) reproducibly positions the rear wing (12) in the trough-shaped receiving device (15) in the lateral direction (8). [9] Air guiding device (1) according to one of the preceding claims, wherein the trough-shaped receiving device (15) is positioned adjacent to the aerodynamic pressure point (19). [10] Air guiding device (1) according to one of the preceding claims, wherein the rear wing (12) extending in the lateral direction (8) is equipped at two or more laterally spaced locations with a separate wing support device (13).

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