Air guiding apparatus for a motor vehicle

Patent metadata

Field	Value
Publication number	US-2018093718-A1
Application number	US-201715715188-A
Country	US
Kind code	A1
Filing date	Sep 26, 2017
Priority date	Oct 5, 2016
Publication date	Apr 5, 2018
Grant date	—

Abstract

An air guiding apparatus for a motor vehicle includes an air guiding element and a coupling device configured to positively couple movement of lateral air guiding element sections directed transversely with respect to a longitudinal direction of the vehicle to a movement of the air guiding element between a rest position and an operating position. The coupling device includes a piston configured to be guided in a cylinder in such a way that the piston carries out a rotational movement during a linear movement in the cylinder, and a rotary rocker configured to act on the piston via a cardan joint, configured to also carry out the rotational movement of the piston, and configured to convert the rotational movement of the piston into movement of the lateral air guiding element sections directed transversely with respect to the longitudinal direction of the motor vehicle.

First claim

What is claimed is:

1 . An air guiding apparatus for a motor vehicle, the air guiding apparatus being arranged in a rear region of the motor vehicle, the air guiding apparatus comprising:
an air guiding element configured to be moved between a retracted rest position and a deployed operating position, the air guiding element being divided, as viewed in a longitudinal direction of the motor vehicle, with a formation of air guiding element sections in such a way that, during movement of the air guiding element between the rest position and the operating position, lateral air guiding element sections are additionally configured to be moved transversely with respect to the longitudinal direction of the motor vehicle in a manner which is coupled to said movement of the air guiding element; and a coupling device configured to positively couple movement of the lateral air guiding element sections which is directed transversely with respect to the longitudinal direction of the vehicle to the movement of the air guiding element between the rest position and the operating position, the coupling device including:
a piston configured to be guided in a cylinder in such a way that the piston carries out a rotational movement during a linear movement in the cylinder, and
a rotary rocker configured to act on the piston via a cardan joint, configured to also carry out the rotational movement of the piston, and configured to convert the rotational movement of the piston into the movement of the lateral air guiding element sections which is directed transversely with respect to the longitudinal direction of the motor vehicle.

2 . The air guiding apparatus as claimed in claim 1 , wherein the piston is configured to carry out a rotation by approximately 180° in the cylinder during the movement of the air guiding element between the rest position and the operating position.

3 . The air guiding apparatus as claimed in claim 1 , wherein the rotary rocker is configured to act via the cardan joint on an end of the piston that protrudes out of the cylinder,
wherein the piston has at least one guide pin on a section which is guided in the cylinder, the guide pin being guided in a spiral groove of the cylinder that defines the rotational movement of the piston relative to the cylinder during the linear movement of the piston in the cylinder.

4 . The air guiding apparatus as claimed in claim 3 , wherein the cylinder acts, at an end which faces away from the end of the piston that protrudes out of the cylinder, in an articulated manner on a mounting structure of the air guiding apparatus, via which mounting structure the air guiding apparatus can be mounted on the rear region of the motor vehicle.

5 . The air guiding apparatus as claimed in claim 1 , wherein coupling device further includes an actuating rod for each lateral air guiding element section, each actuating rod being configured to act with a first end in an articulated manner on, in each case, one of the lateral air guiding element sections, and wherein each actuating rod is configured to act with a second end in an articulated manner on the rotary rocker.

6 . The air guiding apparatus as claimed in claim 5 , wherein the rotary rocker includes outer limbs on which the actuating rods act, wherein the outer limbs are offset by approximately 180° with respect to one another.

7 . The air guiding apparatus as claimed in claim 1 , wherein the air guiding element sections of the air guiding element are mounted on a carrier, wherein the carrier is configured to be moved, together with the air guiding element sections, during the movement of the air guiding element between the rest position and the operating position, in such a way that the carrier, together with the air guiding element sections, are configured to be lifted up at least in the vertical direction via a drive in order to transfer the carrier from the rest position into the operating position.

8 . The air guiding apparatus as claimed in claim 7 , wherein the carrier is configured to additionally be tilted about an axis which extends in a horizontal direction transversely with respect to the longitudinal direction of the motor vehicle, and is configured to be lowered at least in the vertical direction for transferring the carrier from the operating position into the rest position.

9 . The air guiding apparatus as claimed in claim 8 , wherein the carrier is configured to additionally be tilted about the axis which extends in the horizontal direction transversely with respect to the longitudinal direction of the motor vehicle, wherein the lateral air guiding element sections are configured to additionally be moved transversely with respect to the longitudinal direction of the motor vehicle in a manner which is positively coupled to the common movement of the carrier and the air guiding element sections.

Assignees

• Porsche Ag

Inventors

• Charpentier Pierre

Classifications

• B62D35/007 Primary

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

• Y02T10/82

  Elements for improving aerodynamics · CPC title

• B62D37/02

  by aerodynamic means · CPC title