Patent ID: 9708005
Date: 2017-07-18
CPC Classifications: B60G,B62D,B62K

Claim:
1. A wheel suspension ( 10 ) for a vehicle with a supporting vehicle element ( 14 ), wherein the wheel suspension ( 10 ) comprises at least one pair of single-sided swing arms ( 12 A, 12 B), wherein each of the single-sided swing arms ( 12 A, 12 B) is linked separately to the supporting vehicle element ( 14 ), and a wheel ( 16 A, 16 B) is rotatably fastened to the single-sided swing arm ( 12 A, 12 B), wherein each of the single-sided swing arms ( 12 A, 12 B) is associated with a hydraulic cylinder ( 18 A, 18 B) which is linked to the single-sided swing arm ( 12 A, 12 B) and/or the supporting vehicle element ( 14 ), wherein each hydraulic cylinder ( 18 A, 18 B) is subdivided by a movable piston ( 25 A, 25 B) in a fluid-tight manner into two chambers, characterized in that each hydraulic cylinder ( 18 A, 18 B) comprises a first chamber ( 26 A- 1 , 26 B- 1 ) with an active function and a second chamber ( 26 A- 2 , 26 B- 2 ) with a passive function, wherein the active chamber ( 26 A- 1 , 26 B- 1 ) is filled with liquid, wherein the active chambers ( 26 A- 1 , 26 B- 1 ) of a pair of single-sided swing arms ( 12 A, 12 B) communicate with each other via a liquid line ( 28 ) in a closed system, by means of which movements of the piston ( 25 A) of a first one of the hydraulic cylinders ( 18 A) produce respective counter-movements of the piston ( 25 B) of a second one of the hydraulic cylinders ( 18 B), and wherein the passive chamber ( 26 A- 2 , 26 B- 2 ) is filled with fluid, wherein the fluid in the passive chamber ( 26 A- 2 , 26 B- 2 ) exerts a force on the rear side of the piston ( 25 A, 25 B), which substantially corresponds to the force exerted by the pressure of the ambient air and thus influences the positions of the piston ( 25 A, 25 B) insignificantly, and further characterized by comprising a fluid line ( 30 ) associated with the passive chambers ( 26 A- 2 , 26 B- 2 ), via which the passive chambers ( 26 A- 2 , 26 B- 2 ) of the hydraulic cylinders ( 18 A, 18 B) of a pair of single-sided swing arms ( 12 A, 12 B) are formed to communicate with each other.