Ball-screw assembly isolator
AssigneeDelphi Technologies, Inc.
InventorsRandy R. Lynn, Joel Edward Birsching, David E. King, Anthony J. Champagne
Life of this patent
Estimating the term…
Abstract
An isolation system for a ball-screw assembly including: a ball-screw; a ball-screw nut wherein the ball-screw is configured to engage the ball-screw nut, the ball-screw nut is enclosed in a ball-screw nut container; and a member disposed between the ball-screw nut and the ball-screw nut container, the member having selected properties. A method of providing a degree of freedom to a steering mechanism, the method including: selecting a member, the member having selected properties; and interposing the member between a ball-screw nut and a ball-screw nut container.
Claims86
A steering system for a vehicle, comprising:
- a rack assembly coupled to a road wheel;
- a rotary to linear mechanism coupled to said rack assembly and in operable communication with an electric motor, said rotary to linear mechanism includes a rotary component and a linear component, said electric motor providing an actuating force to said rotary-to-linear mechanism, said actuating force causing said rack assembly to move linearly;
- and
- an isolation system in operable communication with said rotary-to-linear mechanism and disposed at said rotary-to-linear mechanism,
- wherein said isolation system comprises a member positioned radially outwardly from said rotary component, said member having selected properties.
A steering system for a vehicle, comprising:
- a hand wheel;
- a steering mechanism for transmitting a steering operation of said hand wheel to vary the angular configuration of a road wheel;
- a power assist mechanism for providing an assisting force to said steering mechanism, said power assist mechanism being activated in response to said steering operation of said hand wheel, said power assist mechanism includes a rotary component and a linear component;
- and
- an isolation system being operatively coupled to said power assist mechanism,
- wherein said isolation system comprises a member positioned radially outwardly from said rotary component, said member having selected properties.
A steering system for a vehicle, comprising:
- a rack assembly coupled to a road wheel;
- a ball-screw assembly enclosed in a ball-screw nut container being coupled to said rack assembly and an electric motor, said electric motor providing an actuating force to said ball screw assembly, said actuating force causing said rack assembly to move linearly;
- and
- a member disposed between said ball-screw assembly and said ball-screw nut container, said member is positioned radially outwardly from said ball-screw assembly.
An isolation system for a ball-screw assembly comprising:
- a ball-screw;
- a ball-screw nut wherein said ball-screw is configured to engage said ball-screw nut, said ball-screw nut is enclosed in a ball-screw nut container;
- and
- a member disposed between said ball-screw nut and said ball-screw nut container, said member having selected properties, said member is positioned radially outwardly from said ball-screw nut.
A steering system fur a vehicle, comprising:
- a rack assembly coupled to a road wheel;
- a rotary-to-linear mechanism coupled to said rack assembly and in operable communication with an electric motor, said rotary to linear mechanism includes a rotary component and a linear component, said electric motor providing an actuating force to said rotary-to-linear mechanism, said actuating force causing said rack assembly to move linearly;
- a container surrounding said rotary-to-linear mechanism;
- and
- means for interrupting a vibration at said rotary-to linear mechanism, wherein said means for interrupting comprises a member positioned radially outwardly from said rotary component, said member contacts said container, said member having selected properties.
A method of providing a degree of freedom to a steering mechanism, said method comprising:
- selecting a member, said member having selected properties;
- interposing said member between a ball-screw nut and a ball-screw nut container;
- and
- positioning said member radially outwardly from said ball-screw nut, said member contacts said ball-screw nut container.
A ball-screw nut isolated by a member in contact therewith said member having selected degrees of freedom properties, said member positioned radially outwardly from said ball-screw nut and in contact with said ball-screw nut.
A ball-screw nut isolated by a member in contact therewith said member having selected vibration dampening properties, said member positioned radially outwardly from said ball-screw nut and in contact with said ball-screw nut.
Dependencies are inferred from the claim text.