Air guiding device for a motor vehicle

Patent metadata

Field	Value
Publication number	US-9428229-B2
Application number	US-201514643004-A
Country	US
Kind code	B2
Filing date	Mar 10, 2015
Priority date	Mar 26, 2014
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

Air guiding device ( 12 ) of a motor vehicle has an air guiding element ( 13 ) extending in the region of a forward structure part ( 11 ) of the motor vehicle completely or partially over the width thereof. An actuating element ( 16 ) can displace the air guiding element ( 13 ) between an extended operating position in which the air guiding element ( 13 ) has an aerodynamic air guiding effect, and a retracted inoperative position in which the air guiding element ( 13 ) has substantially no aerodynamic air guiding effect. The air guiding element ( 13 ) is formed at least in certain portions from an elastically deformable sheet-like element ( 15 ) whose outer contour can be brought into shape in such a way that the sheet-like element ( 15 ) ensures laminar flow guidance.

First claim

What is claimed is:

1. An air guiding device of a motor vehicle, comprising: an air guiding element in a region of a forward structure of the motor vehicle and extending completely or partially over a width of the motor vehicle, and an actuating element for displacing the air guiding element between an extended operating position in which an outer contour of the air guiding element has an aerodynamic air guiding effect, and a retracted inoperative position, in which the air guiding element has substantially no aerodynamic air guiding effect, the air guiding element being formed at least in certain portions from an elastically deformable sheet-like element with an outer contour that can be brought into a shape that ensures laminar flow guidance.

2. The air guiding device of claim 1 , further comprising at least one elastic tension band having a first end acting on the sheet-like element and bringing the air guiding element into the operating position.

3. The air guiding device of claim 2 , further comprising a spoiler lip that forms a downwardly directed extension of the forward structure in the operating position and is directed rearwardly in the inoperative position, the elastically deformable sheet-like element being adjoined behind the spoiler lip so that a front portion of the elastically deformable sheet-like element is at a lower portion of the spoiler lip when the air guiding element is in the operating position, and is at a rear portion of the spoiler lip when the air guiding element is in the inoperative position portion, the elastically deformable sheet-like element having a rear portion secured on the forward structure part.

4. The air guiding device of claim 2 , wherein the elastic tension band acting on the sheet-like element brings the sheet-like element into a shape in the operating position so that the sheet-like element is shaped at the front convexly down and out.

5. The air guiding device of claim 2 , wherein an elastic tension band acts on a central portion of the sheet-like element to obtain a flow-optimized outer contour.

6. The air guiding device of claim 5 , wherein the elastic tension band has a second end secured on a fastening strip for the actuating element.

7. The air guiding device of claim 6 , wherein the actuating element has air chambers and has a first end that acts on a lower portion of the spoiler lip in the operating position and that acts on a rear portion of the spoiler lip in the inoperative position, the actuating element further having a second end on a fastening strip for the actuating element.

8. The air guiding device of claim 1 , wherein the air guiding element is formed completely by the elastically deformable sheet-like element, the elastically deformable sheet-like element acts with a front portion on a front portion of the forward structure part and with a rear portion on a rear portion of the forward structure part.

9. The air guiding device of claim 8 , wherein the actuating element has air chambers, a first end that acts on a portion of the elastically deformable sheet-like element and a second end that acts on a fastening strip for the actuating element.

10. The air guiding device of claim 9 , further comprising an elastic tension band that acts on a portion of the sheet-like element that is situated behind the portion ( 34 ) on which the actuating element acts.

11. The air guiding device of claim 10 , wherein the elastic tension band further acts with an opposite end on a fastening strip for the actuating element.

12. The air guiding device of claim 11 , wherein the elastic tension band acting on the sheet-like element and the actuating element bring the sheet-like element into shape in the operating position so that the sheet-like element is shaped convexly down and out at the front and at the rear to achieve laminar flow.

13. The air guiding device of claim 12 , wherein an elastic tension band acts on a portion of the sheet-like element to obtain a flow-promoting outer contour, and in that the elastic tension band further acts with an opposite end on the fastening strip for the actuating element.

Assignees

• Porsche Ag

Inventors

• Hoelzel Steffen
• Scheerer Florian

Classifications

• B62D35/005 Primary

  Front spoilers (B62D35/001 takes precedence) · CPC title

• Y02T10/82

  Elements for improving aerodynamics · CPC title