Clutch mechanism and decoupler device with same
AssigneeLitens Automotive Partnership
InventorWarren J. Williams
Life of this patent
Estimating the term…
Abstract
A clutched device that includes a pulley, a shaft member, a first one-way clutch having a first wrap spring, and an actuator having an electromagnetic coil and an armature. The first one-way clutch rotationally couples the pulley and the shaft member when the actuator is actuated and rotary power is transmitted from a first one of the pulley and the shaft member to the other one of the pulley and the shaft member in a first rotational direction. A frictional force is applied to the armature when the actuator is activated. The frictional force is configured to resist rotation of the armature to cause the first wrap spring to radially expand into driving engagement with a clutch surface that is coupled to the pulley for common rotation.
Claims12
A clutched device comprising:
- a pulley;
- a shaft member;
- a first one-way clutch having a first wrap spring;
- and
- an actuator having an electromagnetic coil and an armature;
- wherein the first one-way clutch rotationally couples the pulley and the shaft member when the actuator is actuated and rotary power is transmitted from a first one of the pulley and the shaft member to the other one of the pulley and the shaft member in a first rotational direction;
- and
- wherein a frictional force is applied to the armature when the actuator is activated, the frictional force being configured to resist rotation of the armature to cause the first wrap spring to radially expand into driving engagement with a clutch surface that is coupled to the pulley for common rotation.
A clutched device comprising:
- a pulley;
- a shaft member;
- a first one-way clutch having a first wrap spring;
- and
- an actuator having an electromagnetic coil and an armature;
- wherein the first one-way clutch rotationally couples the pulley and the shaft member when the actuator is actuated and rotary power is transmitted from a first one of the pulley and the shaft member to the other one of the pulley and the shaft member in a first rotational direction;
- and
- wherein a frictional force is applied to the armature when the actuator is activated, the frictional force being configured to resist rotation of the armature to cause driving engagement of the first wrap spring with a clutch surface that is coupled to the pulley for common rotation with the pulley.
Dependencies are inferred from the claim text.