Back to results
US 2012/0067315 A1Published application
Clutch or brake in or at a gearbox
AssigneeZF Friedrichshafen AG
InventorsFrank Richter, Ilja Imgrunt, Konrad Thoma
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeZF Friedrichshafen AG
InventorsFrank Richter, Ilja Imgrunt, Konrad Thoma
Estimating the term…
A clutch or brake with an electrically actuated switching coil and an armature that axially moves toward the switching coil and forms a connection with the switching coil and can rotate relative to the switching coil, in an adjustment system for camshafts of a combustion engine. A superposition transmission has an input driven by a crankshaft of the engine, a drive output element that drives a camshaft of the engine and a control element, by which relative rotation between the input and the output can be produced by applying a braking torque. The armature is rotationally fixed and axially slidable, and centered on or at a transmission component, and the switching coil is rotationally fixed and centered coaxially with the armature by a membrane spring on a further transmission component, relative to which the armature is braked or to which the armature is coupled.
1-7. (canceled)
A clutch or brake (11) with an electrically actuated switching coil (12) and an armature (13) that is axially movable toward the switching coil (12) to form a either a frictional or an interlocked connection with the switching coil (12) and being rotatable relative to the switching coil (12), in a transmission (1) comprising a superposition transmission (1) with a drive input element (4) that is driven by a crankshaft of an internal combustion engine, a drive output element (3) that drives a camshaft of the internal combustion engine, and a control element by which relative rotation between the drive input element (4) and the drive output element (3) is produced by applying a braking torque, the armature (13) being arranged in a rotationally fixed and displaceable manner, centered either on or at a transmission component (6), and the switching coil (12) being attached in a rotationally fixed manner and centered coaxially with the armature (13) by a membrane spring (22) on a further transmission component (10), relative to which either the armature (13) being braked or the armature (13) being coupled.
A clutch or brake (11) with an electrically actuated switching coil (12) and an armature (13) that is axially movable toward the switching coil (12) to form a either a frictional or an interlocked connection with the switching coil (12) and which is rotatable relative to the switching coil (12), in a transmission (1) comprising a superposition transmission (1) with a drive input element (4) being driven by a crankshaft of an internal combustion engine, a drive output element (3) driving a camshaft of the internal combustion engine, and a control element by which a relative rotation between the drive input element (4) and the drive output element (3) being produced by applying a braking torque, the armature (13) being arranged in a rotationally fixed and displaceable manner, centered either on or at a transmission component (6), and the switching coil (12) being attached in a rotationally fixed manner and centered coaxially with the armature (13) by a membrane spring (22) on a further transmission component (10), relative to which either the armature (13) being braked or the armature (13) being coupled, and
A coupling (11) comprising an electrically actuated switching coil (12) and an armature (13), the armature (13) being axially movable in relation to the switching coil (12) to form an engagement with the switching coil (12) and being rotatable relative to the switching coil (12), a superposition transmission (1) comprising a drive input element (4) being driven by a crankshaft of an internal combustion engine, a drive output element (3) driving a camshaft of the internal combustion engine, and a control element for producing relative rotation between the drive input element (4) and the drive output element (3) by applying a braking torque, the armature (13) being supported on a transmission component (6) in a rotationally fixed and axially displaceable manner, and the switching coil (12) being attached in a rotationally fixed manner and centered coaxially with the armature (13) by a membrane spring (22) on a further transmission component (10), relative to which the armature (13) being braked or to which the armature (13) being coupled.
Dependencies are inferred from the claim text.