US 12,188,524 B2
Pressure-actuated clutch with a double piston, and torque distribution device for a motor vehicle with two clutches of this type
Elmar Lorenz, Rheinmünster Söllingen (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 18/691,209
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Sep. 14, 2022, PCT No. PCT/DE2022/100680
§ 371(c)(1), (2) Date Mar. 12, 2024,
PCT Pub. No. WO2023/057005, PCT Pub. Date Apr. 13, 2023.
Claims priority of application No. 10 2021 126 107.4 (DE), filed on Oct. 8, 2021.
Prior Publication US 2024/0392841 A1, Nov. 28, 2024
Int. Cl. F16D 25/0638 (2006.01); F16D 25/10 (2006.01)
CPC F16D 25/0638 (2013.01) [F16D 25/10 (2013.01)] 17 Claims
OG exemplary drawing
 
10. A clutch device for a motor vehicle, comprising:
a disc pack comprising:
an outer disc pack arranged to be coupled to an input shaft; and
an inner disc pack arranged to be coupled to an output shaft; and
an actuation device comprising:
a retaining element;
a primary piston arranged on the retaining element in an axially displaceable manner, the primary piston delimiting a primary pressure chamber;
a secondary piston arranged on the retaining element in an axially displaceable manner, the secondary piston delimiting a secondary pressure chamber; and
a spring element integrally formed from a same piece of material as the secondary piston, the spring element connecting the primary piston to the secondary piston, wherein:
when a pressure is applied to a pressure medium in the primary pressure chamber, the primary piston is arranged to move the outer disc pack against the inner disc pack and frictionally transmit torque from the input shaft to the output shaft; and
when a pressure is applied to a pressure medium in the secondary pressure chamber, the secondary piston is arranged to move the primary piston against the outer disc pack.