US 12,734,857 B1Granted

Hydromechanical anti-roll bar disconnect

AssigneeSchaeffler Technologies AG & Co. KG

InventorsNicholas Hrusch, Todd Sturgin

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Abstract

An anti-roll bar may include a hydromechanical disconnect. The hydromechanical disconnect may use windup torque as an actuating force to disconnect the hydromechanical disconnect. Hubs of the hydromechanical disconnect may be axially separated due to an axial separating force produced in face splines of the hubs. An oil control valve may control the disconnecting motion depending on the desired mode of the hydromechanical disconnect. The oil control valve controls the flow of fluid between advance and retract chambers defined by the hydromechanical disconnect. Flow from the advance chamber to the retract chamber may maintain the hydromechanical disconnect in a connected position. Flow between both the advance chamber and the retract chamber may allow translation of the hydromechanical disconnect between the non-rotatably connected position and a disconnected position. Flow blocked between the advance chamber and the retract chamber may maintain the hydromechanical disconnect in the disconnected position.

Claims20

Dependent claims

A hydromechanical disconnect comprising:

a housing comprising an input housing and an output housing, the input housing and the output housing being affixed together;
an input hub, the input hub and the input housing being rotatably connected, axially connected, and sealed together;
an output hub, the output hub and the output housing being sealed together;
an output tube, the output hub and the output tube being affixed, the output tube and the output housing being non-rotatably connected and sealed together, the output hub configured to axially translate relative to the input hub between a non-rotatably connected position and a disconnected position, the input hub and the output hub being non-rotatably connected in the non-rotatably connected position, the input hub being disconnected and configured to rotate relative to the output hub in the disconnected position, the output hub configured to disconnect from the input hub due to torque between the input hub and the output hub, the input hub and the output tube being sealed together,
a return spring returning the output hub to the non-rotatably connected position;
an advance chamber defined by the input hub, the input housing, the output housing, the output hub, and the output tube;
a retract chamber defined by the output housing, the output hub, and the output tube, the output hub separating the advance chamber from the retract chamber, the advance chamber and the retract chamber holding a hydraulic fluid;
a manifold fluidically coupling the hydraulic fluid between the advance chamber and the retract chamber;
and
an oil control valve controlling axial motion of the output hub relative to the input hub by controlling a flow of the hydraulic fluid through the manifold.

7 more elements

Dependencies are inferred from the claim text.