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US 11,447,171 B2Granted
Steering device of vehicle
OwnerSeong Moo Heo, Won Pyo Gonginventors
Life of this patent
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Abstract
According to the embodiments, it is possible to mitigate noise by compensating for the clearance inside the bearing supporting the rotation of the ball nut and the clearance between the ball nut and the ball screw and prevent excessive friction between the ball nut and the ball screw and inside the bearing to thereby allow the driver a better steering feel.
Claims20
A steering device of a vehicle, comprising:
- a ball nut including a first ball nut member and a second ball nut member an inner circumferential surface of each of which is coupled with a ball screw via a first ball, a nut pulley coupled to an outer circumferential surface of the first ball nut member, and a step jaw protruding from an outer circumferential surface of the second ball nut member;
- a bearing including an inner ring including a first inner ring coupled to the outer circumferential surface of the first ball nut member and a second inner ring coupled to the outer circumferential surface of the second ball nut member and provided between the nut pulley and the step jaw, an outer ring coupled to a housing, a second ball provided between the first inner ring and the outer ring, and a third ball provided between the second inner ring and the outer ring;
- a first elastic member provided between the nut pulley and the first inner ring;
- and
- a second elastic member provided between the step jaw and the second inner ring.
2 more elements
Dependencies are inferred from the claim text.