Side rear area of ​​a motor vehicle with an air guide device and motor vehicle

Abstract

A side rear section (10) of a motor vehicle (11), comprising a rear body section (12) extending at least behind a rear wheel arch (13) of the motor vehicle (11), comprising an air guide device (14), wherein an air guide element (15) of the air guide device (14) is displaceable relative to the rear body section (12) between a rest position retracted into the side rear section (10) and an operating position extended from the same, such that in the retracted rest position a flow guide surface (16) of the air guide element (15) is concealed by the rear body section (12), and that in the extended operating position the flow guide surface (16) of the air guide element (15) is displaced rearward relative to the rear body section (12) at least in the longitudinal direction of the motor vehicle (11),wherein the air guide element (15) of the air guide device (14) is rotatable about a pivot axis (18) for the purpose of repositioning it between the retracted rest position and the extended operating position.

Description

[0001] The invention relates to a side rear area of ​​a motor vehicle with an air guide device. The invention further relates to a motor vehicle.

[0002] Various types of air guide devices are known from practical experience with motor vehicles. Air guide devices that are assigned to a side area of ​​a motor vehicle and serve to direct the airflow there are also called sideblades.

[0003] DE 10 2023 109 191 B4, DE 10 2023 102 208 B4 and DE 10 2023 117 958 A1 each disclose a side rear section of a motor vehicle with an air guide device, wherein the air guide device has an air guide element that is displaceable between a rest position retracted into the side rear section and an operating position extended from it. In the retracted rest position, a flow guide surface of the air guide element is concealed by the rear body panel. In the extended operating position, the flow surface of the air guide element is displaced rearward relative to the rear body panel, at least in the longitudinal direction of the motor vehicle. The displacement of the air guide element relative to the rear body panel is effected by a translational movement extending in the longitudinal direction of the vehicle.Because the air guide element in the known side rear sections is displaced along a translational movement relative to the rear body panel, a relatively large opening is required in the rear body panel through which the air guide element must move relative to the rear body panel. This is disadvantageous from an aesthetic point of view, and furthermore, a relatively large opening for the displacement of the air guide element relative to the rear body panel can allow dirt to penetrate the rear body panel and ultimately impair the functionality of the air guide device.

[0004] DE 10 2023 109 169 A1 discloses a further lateral rear area of ​​a motor vehicle with an air guide element that can be translationally displaced to the rear body part.

[0005] DE 10 2023 120 399 A1 discloses an air guide element of a motor vehicle with a surface element and a longitudinally displaceable support element, wherein the surface element is movably mounted to the support element, furthermore with a drive element with a gear drive, wherein the support element can be driven longitudinally displaceably by means of the gear drive.

[0006] DE 10 2023 114 372 B3 discloses an air guide device for a motor vehicle, wherein an air guide element of the air guide device is arranged in a rear area of ​​a motor vehicle body of the motor vehicle, and wherein an outer skin can be extended along a longitudinal axis of the motor vehicle body with the aid of the air guide element.

[0007] There is a need for a side rear area of ​​a motor vehicle with an air guide device, in which the risk of dirt penetrating the rear body part and impairing the functionality of the air guide device is reduced.

[0008] The invention is based on the objective of creating a corresponding side rear area with an air guide device and a motor vehicle with such a side rear area.

[0009] This problem is solved by a side rear area of ​​a motor vehicle according to claim 1 and by a motor vehicle according to claim 9.

[0010] According to the invention, the air guide element of the air guide device of the lateral rear area according to the invention is rotatable about a pivot axis for the purpose of repositioning the same between the retracted rest position and the extended operating position.

[0011] By rotating the respective air guide element of the side rear section according to the invention around a pivot axis to move it between the retracted rest position and the extended operating position, the opening in the rear body section of the side rear section, through which the air guide element moves when the air guide device is moved between the rest position and the operating position, can be made smaller. This reduces the risk of dirt penetrating the rear body section and impairing the functionality of the air guide device.

[0012] Preferably, the air guide element of the air duct is rotatable about a rotational axis for repositioning between the retracted rest position and the extended operating position, and simultaneously translationally displaceable along the rotational axis at least along part of the rotational movement. When repositioning from the retracted rest position to the extended operating position, the air guide element is rotatable rearward about the rotational axis and, at least at the end of this rotational movement, simultaneously translationally displaceable outward along the rotational axis. When repositioning from the extended operating position to the retracted rest position, it is rotatable forward about the rotational axis and, at least at the beginning of this rotational movement, simultaneously translationally displaceable inward along the rotational axis.

[0013] Then, if at least along part of the rotational movement of the air guide element around the axis of rotation the air guide element can be simultaneously displaced translationally along the axis of rotation, the respective air guide element performs a kind of spiral movement, which in the extended operating position can be particularly advantageously ensured that the flow guide surface of the air guide element extends flush with an outer surface of the rear body part that adjoins the flow guide surface directly at the front.

[0014] Preferred embodiments of the invention are described in the dependent claims and the following description. Exemplary embodiments of the invention are explained in more detail with reference to the drawing, without being limited thereto. The drawing shows: Fig. 1 a side view of a lateral rear area of ​​a motor vehicle according to the invention in a first state thereof with an air guide device in a retracted rest position, Fig. 2 a side view of a lateral rear area of ​​a motor vehicle according to the invention in a second state of the same with the air guide device in an extended operating position, Fig. 3 a detail of the Fig. 1 with the air guide device in the retracted rest position, Fig. 4 the detail of Fig. 3 with the air guide device in the extended operating position, Fig. 5 an alternative to the details of the Fig. 3, Fig. 4 with the air guide device in the extended operating position.

[0015] Fig. 1 and Fig. Figure 2 shows a section of a side rear section 10 of a motor vehicle 11 according to the invention. A rear body part 12 of the side rear section 10 is shown, which extends in the side rear section 10 of the motor vehicle 11 at least behind a rear wheel arch 13 of the motor vehicle. Such a side rear section 10 is formed on both sides of the motor vehicle 11.

[0016] The side rear section 10 has an air guide device 14. The air guide device 14 has an air guide element 15. The air guide element 15 is positioned relative to the rear body section 12 in a rest position retracted into the side rear section 10 (see Fig. 1, Fig. 3) and an operating position extended from the same (see Fig. 2, Fig. 4) movable.

[0017] Then, when the air guide element is in the retracted rest position (see Fig. 1 and Fig. 3) When the air guide element 15 is displaced, a flow-guiding surface 16 of the air guide element 15 is obscured by the rear body part 12. Conversely, when the respective air guide element 15 is displaced into the extended operating position, the flow-guiding surface 16 of the air guide element 15 is displaced at least rearward relative to the rear body part 12 of the motor vehicle 11.

[0018] During the shift between the retracted rest position of the Fig. 1, Fig. 3 and the extended operating position of the Fig. 2, Fig. 4. The air guide element 15 extends through a respective opening 17 in the rear body section 12. In the retracted rest position, the air guide element is completely concealed by the rear body section 12 and does not protrude from the opening 17. However, when the air guide element 17 is moved into the extended operating position, the flow-guiding surface 16 of the air guide element 15 penetrates the respective opening 17 of the respective side rear section 10 and protrudes from the opening 17.

[0019] The air guide element 15 of the air guide device 14 is rotatable about a pivot axis 18 for repositioning between the retracted rest position and the extended operating position. The pivot axis 18 either extends in the transverse direction of the vehicle or is inclined at an acute angle to the transverse direction of the vehicle. Such an acute angle is in particular between 3° and 15°, preferably between 5° and 10°. The angle is adapted to the orientation of the rear body part 12 relative to the opening 17.

[0020] The air guide element 15 has a substantially C-shaped contour with legs 15a, 15b, between which a slot 19 extends, these legs 15a, 15b being connected by a connecting section 15c. The axis of rotation 18 engages one of the legs of the C-shaped air guide element 15, namely leg 15b. The other leg, namely leg 15a, of the C-shaped air guide element 15 is moved through the opening 17 in the rear body panel 12 when the air guide element 15 rotates about the axis of rotation 18. In the retracted rest position, both legs 15a, 15b and the connecting section 15c of the air guide element 15 are completely concealed by the rear body panel 12. In the extended operating position, the leg 15a and the connecting section 15c are completely and the section 15b partially moved out of the rear body part 12 through the opening 17.

[0021] In the extended operating position, a section of the rear body part 12, which limits the opening 17, engages in the slot 19 between the legs 15a, 15b. The pivot axis 18 is concealed by the rear body part 12.

[0022] Due to the rotational movement of the air guide element 15 during its displacement from the position into the Fig. 1, Fig. 3 shown resting position in the in Fig. 2, Fig. In the operating position shown in Figure 4, the dimensions of the respective opening 17 in the rear body part 12 can be kept relatively small in the vertical direction. This is shown in Figure 4. Fig. 4, that in the operating position the air guide element 15 moved out of opening 17 has a larger dimension in the upward direction of the motor vehicle 11 than the opening 17. The invention makes it possible to provide the largest possible aerodynamically effective flow guidance area 16 of the air guide element 15, even with a relatively small opening 17 for the air guide element 15 to be moved between the rest position and the operating position.

[0023] According to a further development of the invention, it is provided that the air guide element 15 of the air guide device 14, when moved between the retracted rest position and the extended operating position, can be displaced translationally along the axis of rotation 18, in addition to rotation about the axis of rotation 18, at least along part of the rotational movement about the axis of rotation 18, thereby providing a spiral or spiral-like movement. Then, when the air guide element 15, during its displacement, starts from the Fig. 1, Fig. 3 shown resting position in the in Fig. 2, Fig. 4 In the operating position shown, the air guide element 15 is rotated backwards around the axis of rotation 18 through the respective opening 17, at least at the end of this rotational movement it can be simultaneously displaced translationally outwards along the axis of rotation 18 in order to ensure that the flow guide surface 16 of the air guide element 15 extends flush with an outer surface of the rear body part 12 which adjoins the flow guide surface 16 at the front.

[0024] When the air guide element 15 is moved from the extended operating position to the retracted rest position, the air guide element 15 can also be rotated about the axis of rotation 18, specifically forwards, whereby at least at the beginning of this rotational movement the air guide element 15 can simultaneously be displaced translationally inwards. This prevents a collision with the rear body part 12, which has the opening 17.

[0025] The air guide element 15 can be driven by an electric motor or by a pneumatic, hydraulic, or magnetic drive system. In the case of an electric motor, it is preferably mounted directly and coaxially on the rotary axis 18.

[0026] As previously described, the air guide element 15 has a substantially C-shaped contour with two legs 15a and 15b. The axis of rotation 18 engages the first leg 15b, and the second leg 15a extends through the respective opening 17 in the rear body section 12 during the displacement movement of the air guide element 15 between the retracted rest position and the extended operating position. The second leg 15a is larger than the first leg 15b in order to provide a large and effective flow-guiding surface 16 in the extended operating position, even with a small opening 17.

[0027] In the exemplary embodiment of the Fig. 1, Fig. 2, Fig. 3 to Fig. 4 the axis of rotation 18 is positioned in the area of ​​a lower end of the respective opening 17 or below the respective opening 17. In this case, then in Fig. 1, Fig. 2, Fig. 3 to Fig. 4. When transferring the air guide element 15 from the rest position to the operating position, a clockwise rotational movement occurs, and when transferring the air guide element 15 from the operating position to the rest position, a counterclockwise rotational movement occurs.

[0028] In contrast, it shows Fig.5 a modification in which the axis of rotation 18 is positioned in the region of an upper end of the respective opening 17 or above the respective opening 17. Then, when the air guide element 15 is moved from the rest position to the operating position, the air guide element 15 rotates counterclockwise, and when the air guide element 15 is moved from the operating position to the rest position, it rotates clockwise around the axis of rotation 18.

[0029] The invention does not guarantee specific dimensions for the respective opening 17 through which the air guide element 15 is moved when transitioning between the rest position and the operating position. This reduces the risk of dirt penetrating the rear body panel 12 and impairing the functionality of the air guide device 15.

Claims

[1] Side rear area (10) of a motor vehicle (11), with a rear body part (12) which extends at least behind a rear wheel arch (13) of the motor vehicle (11), with an air guide device (14), wherein an air guide element (15) of the air guide device (14) is displaceable relative to the rear body part (12) between a rest position retracted into the side rear area (10) and an operating position extended from the same such that in the retracted rest position a flow guide surface (16) of the air guide element (15) is covered by the rear body part (12), and that in the extended operating position the flow guide surface (16) of the air guide element (15) is displaced rearward relative to the rear body part (12) at least in the longitudinal direction of the motor vehicle (11), characterized by , that the air guide element (15) of the air guide device (14) is rotatable about a pivot axis (18) for repositioning it between the retracted rest position and the extended operating position. [2] Side rear area (10) according to claim 1, characterized by , that the axis of rotation (18) extends in the transverse direction of the vehicle. [3] Side rear area (10) according to claim 1 or 2, characterized by , that the axis of rotation (18) is inclined to the transverse direction of the vehicle. [4] Side rear area (10) according to claim 3, characterized by , that the axis of rotation (18) is inclined at an angle between 3° and 15° to the transverse direction of the vehicle. [5] Side rear area (10) according to claim 4, characterized by , that the axis of rotation (18) is inclined at an angle between 5° and 10° to the transverse direction of the vehicle. [6] Side rear area (10) according to one of claims 1 to 5, characterized by, that the air guide element (15) of the air guide device (14) is rotatable about the axis of rotation (18) for the purpose of relocating the same between the retracted rest position and the extended operating position and is simultaneously translationally displaceable along the axis of rotation (18) at least along part of the rotational movement. [7] Side rear area (10) according to claim 6, characterized by , that the air guide element (15) is rotatable to the rear about a pivot axis (18) when being moved from the retracted rest position to the extended operating position and is simultaneously translationally displaceable outwards along the pivot axis (18) at least at the end of this rotation movement, the air guide element (15) is rotatable forward about a rotational axis (18) when being moved from the extended operating position to the retracted rest position and is simultaneously translationally displaceable inwards along the rotational axis (18) at least at the beginning of this rotational movement. [8] Side rear area (10) according to claims 6 and 7, characterized by , that in the extended operating position the flow guiding surface (16) of the air guide element (15) is flush with an outer surface of the rear body part (12) which is directly adjacent to the flow guiding surface (16) at the front. [9] Motor vehicle (11), with two side rear sections (10) according to one of claims 1 to 8.

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