Preloaded torsional biasing device
AssigneeBorgWarner Inc.
InventorsChad McCloy, Joshua D. Plumeau
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Abstract
A biasing assembly used with a VCT device includes a torsional biasing element that is elongated and configured to engage and receive rotational motion from one of a rotor or stator of the VCT device; a rigid element that is configured to engage the other of the rotor of the stator of the VCT device and be inserted within a cavity of a camshaft with the torsional biasing element; a receiving feature that couples the rigid element to the torsional biasing element and inhibits angular movement of the rotor and the stator away from a default angular position, wherein the torsional biasing element and the rigid element are angularly displaced from a resting position to a pre-loaded position when the torsional biasing element and the rigid element engage the rotor and the stator.
Claims20
A biasing assembly used with a variable camshaft timing (VCT) device, the biasing assembly comprising:
- a torsional biasing wire that is elongated and configured to engage and receive rotational motion from one of a rotor or stator of the VCT device;
- a torque tube that is configured to engage a remaining one of the rotor or the stator and be inserted within a cavity of a camshaft with the torsional biasing wire;
- an aperture that couples the torque tube rigid-element to the torsional biasing wire and inhibits angular movement of the rotor and the stator away from a default angular position,
- wherein the torsional biasing wire and the torque tube are angularly displaced from a resting position to a pre-loaded position when the torsional biasing wire and the torque tube engage the rotor and the stator.
A biasing assembly used with a variable camshaft timing (VCT) device, the biasing assembly comprising:
- a torsional biasing wire that is elongated and configured to engage and receive rotational motion from one of a rotor or stator of a VCT device;
- a torque tube, having an inner surface and an outer surface, that is configured to:
- engage a remaining one of the rotor or the stator, receive the torsional biasing wire radially inwardly from the inner surface, and be inserted within a cavity of a camshaft;
- an aperture, carried by the torque tube, that engages a portion of the torsional biasing wire and inhibits angular movement of the rotor or the stator away from a default angular position,
- wherein the torsional biasing wire element and the torque tube are angularly displaced relative to each other from a resting position to a pre-loaded position when the torsional biasing wire and the torque tube engage the rotor and the stator.
A biasing assembly used with a variable camshaft timing (VCT) device, the biasing assembly comprising:
- a torsional biasing wire including:
- a first elongated torsional biasing member including a first camshaft end and a first distal end;
- a second elongated torsional biasing member, spaced apart from the first elongated torsional biasing member, including a second camshaft end and a second distal end, wherein the first elongated torsional biasing member is coupled with the second elongated torsional biasing member;
- a first input member coupled to the first camshaft end of the first elongated torsional biasing member;
- and
- a second input member coupled to the second camshaft end of the second elongated torsional biasing member,
- wherein the first input member and the second input member are angularly displaced relative to each other from a resting position to a pre-loaded position when the first input member and the second input member engage a rotor and a stator of the VCT device.
Dependencies are inferred from the claim text.