Diffuser device for a motor car

Inventors: Ronny Bach (Kirchheim am Neckar, DE); Thomas Benzing (Wildberg, DE); Erich Jehle-Graf (Karlsruhe, DE); Andrej Ruckhaberle (Boeblingen, DE); Uwe Seidler (Boeblingen, DE); Alexander Waeschle (Leonberg, DE)

Assignee: Mercedes-Benz Group AG

B62D35/02 B62D35/007 B62D37/02

View Patent ↗

Loading inventors, assignments & file history…

Monitor This Case

Get email alerts when status or documents change.

Order Certified Copies

Most orders are placed with the USPTO same day — all within 24 business hours.

Order via The Patent Place →

Pre-filled with this patent's details

Quick Facts

Patent No.: US 12679477
App. No.: 18/684,450
Granted: Jul 14, 2026
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

A diffuser device for a motor car includes a diffuser which is moveably held on a base element and an actuator via which the diffuser is movable relative to the base element between a stowed position and a use position. The diffuser has a lower part which is held on the base element such that it is pivotable around a first pivot axis relative to the base element, and an upper part which is held on the base element such that it is pivotable around a second pivot axis relative to the base element, and an intermediate part which is held on the base element such that it is pivotable around a third pivot axis relative to the base element and is respectively shiftably connected to the upper part and the lower part.

Claims (16)

1 . A diffuser device ( 10 ) for a motor car, comprising:

a diffuser ( 16 ) which is moveably held on a base element ( 18 ); and

an actuator ( 20 ) via which the diffuser ( 16 ) is movable relative to the base element ( 18 ) between a stowed position (V) and a use position (G);

wherein the diffuser ( 16 ) has:

a lower part ( 22 ) which is held on the base element ( 18 ) such that it is pivotable around a first pivot axis (S 1 ) relative to the base element ( 18 );

an upper part ( 24 ) which is held on the base element ( 18 ) such that it is pivotable around a second pivot axis (S 2 ) relative to the base element ( 18 ), wherein the upper part is movable together with the second pivot axis (S 2 ) translationally relative to the base element ( 18 ) along a first guide slot ( 26 ) provided on the base element ( 18 ); and

an intermediate part ( 28 ) which is held on the base element ( 18 ) such that it is pivotable around a third pivot axis (S 3 ) relative to the base element ( 18 ) and is respectively shiftably connected to the upper part ( 24 ) and the lower part ( 22 ), wherein the intermediate part ( 28 ) is movable together with the third pivot axis (S 3 ) translationally relative to the base element ( 18 ) along a second guide slot ( 34 ) provided on the base element ( 18 ), and is shiftable, when moving the diffuser ( 16 ) from the stowed position (V) into the use position (G), relative to the upper part ( 24 ) and relative to the lower part ( 22 ), between the upper part ( 24 ) and the lower part ( 22 ), from a retracted position (E) into an extended position (A), and is shiftable, when moving the diffuser ( 16 ) from the use position (G) into the stowed position (V), relative to the upper part ( 24 ) and relative to the lower part ( 22 ), between the upper part ( 24 ) and the lower part ( 22 ) from the extended (A) position into the retracted position (E).

2 . The diffuser device ( 10 ) according to claim 1 , wherein the first pivot axis (S 1 ) is not movable relative to the base element ( 18 ).

3 . The diffuser device ( 10 ) according to claim 1 , wherein the first guide slot ( 26 ) extends in parallel with a vertical direction of the motor car when the diffuser device ( 10 ) is in an installation position.

4 . The diffuser device ( 10 ) according to claim 1 , wherein the second guide slot ( 34 ) has a first longitudinal region ( 38 ) which extends obliquely to a vertical direction of the motor car and obliquely to a longitudinal direction of the motor car when the diffuser device ( 10 ) is in an installation position.

5 . The diffuser device ( 10 ) according to claim 4 , wherein the second guide slot ( 34 ) has a second longitudinal region ( 40 ) which extends in parallel with the longitudinal direction of the motor car when the diffuser device ( 10 ) is in an installation position.

6 . The diffuser device ( 10 ) according to claim 5 , wherein when the diffuser device ( 10 ) is in an installation position, the first longitudinal region ( 38 ) adjoins the second longitudinal region ( 40 ) towards a rear in the longitudinal direction of the motor car.

7 . The diffuser device ( 10 ) according to claim 5 , wherein the second guide slot ( 34 ) has a third longitudinal region ( 42 ) which extends obliquely to the vertical direction of the motor car and obliquely to the longitudinal direction of the motor car and obliquely to the first longitudinal region ( 38 ) when the diffuser device ( 10 ) is in an installation position.

8 . The diffuser device ( 10 ) according to claim 7 , wherein when the diffuser device ( 10 ) is in an installation position, the third longitudinal region ( 42 ) adjoins the first longitudinal region ( 38 ) towards a rear in the longitudinal direction of the motor car.

9 . The diffuser device ( 10 ) according to claim 1 , wherein the actuator ( 20 ) has a motor ( 44 ) and a spindle ( 44 ) which is drivable by the motor ( 44 ) and thus rotated around an axis of rotation ( 48 ) relative to the base element ( 18 ), whereby the intermediate part ( 28 ) and the third pivot axis (S 3 ) are shiftable along the second guide slot ( 34 ) relative to the base element ( 18 ).

10 . The diffuser device ( 10 ) according to claim 1 , wherein the actuator ( 20 ) is held on the base element ( 18 ) such that it is pivotable around a fourth pivot axis (S 4 ) relative to the base element ( 18 ).