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US 2025/0010909 A1Published application
Vehicle steering device
AssigneeHl Mando Corporation
InventorsHyeonsu KIM, Bongsung KO
Life of this patent
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Abstract
A vehicle steering device may prevent a return tube from falling off from a ball nut, being deformed or being damaged despite continuous steering during driving, allow a ball to correctly circulate to the ball nut through the return tube, and prevent the lubricant from leaking from the return tube to correctly transfer steering assistance force.
Claims20
A return tube comprising:
- a first member comprising a first body portion;
- and
- a second member comprising a second body portion,
- wherein:
- the first body portion and the second body portion are formed symmetrically to each other and coupled to each other to form a path for circulating balls,
- a first end of the first and second body portions is coupled to a first hole of a ball nut and a second end of the first and second body portions is coupled to a second hole of the ball nut to circulate the balls in association with the ball nut,
- flanges are formed at each of the first and second body portions to be coupled to each other and protrude from outer surfaces of the first and second body portions, and
- a coupling hole is formed at one of the flanges and a coupling protrusion protrudes from an other of the flanges facing the one of the flanges at which the coupling protrusion is formed and is inserted in the coupling hole formed at the one of the flanges.
5 more elements
A return tube comprising:
- a first member comprising a first body portion;
- and
- a second member comprising a second body portion,
- wherein:
- the first body portion and the second body portion are formed symmetrically to each other and coupled to each other to form a path for circulating balls,
- a first end of the first and second body portions is coupled to a first hole of a ball nut and a second end of the first and second body portions is coupled to the second hole of the ball nut to circulate the balls in association with the ball nut,
- flanges are formed at each of the first and second body portions to be coupled to each other and protrude from outer surfaces of the first and second body portions, and
- a coupling hole is formed at one of the flanges and a coupling protrusion protrudes from an other of the flanges facing the one of the flanges at which the coupling protrusion is formed and is inserted in the coupling hole formed at the one of flanges, and
- a fastening protrusion protrudes from one of the first and second body portions and a fastening groove is formed on an other of the first and second body portions such that the fastening protrusion is inserted in the fastening groove.
6 more elements
Dependencies are inferred from the claim text.