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US 12,116,049 B2Granted
Rack-driven power assisted steering device
AssigneeHl Mando Corporation
InventorHyeon Su Kim
Life of this patent
Estimating the term…
Abstract
According to the present embodiments, provided is a rack-driven power assisted steering device in which a rolling member supporting the rotation of a ball nut is provided in a double row, a ball nut assembly is coupled to a housing through an elastic member, the flow of the ball nut is absorbed to improve noise performance, and the rolling member is directly supported by the ball nut or a support member, so that the number of parts can be reduced and easy assembly is possible.
Claims7
A rack-driven power assisted steering apparatus comprising:
- a ball nut that
- includes a support portion having a first protrusion protruding from an outer circumferential surface of the ball nut, and
- supports a first rolling member through one side surface, and a second rolling member through the other side surface, of the first protrusion in an axial direction;
- a first support member disposed between an inner circumferential surface of a housing and the first rolling member;
- and
- a second support member separate from the first support member and disposed between the inner circumferential surface of the housing and the second rolling member,
- wherein
- one of the first support member and the second support member is supported in the axial direction by the housing, and the other of the first support member and the second support member is supported in the axial direction by a lock screw coupled to the housing, and
- a first elastic member supported in the axial direction is disposed at a first location between the lock screw and one of the first support member and the second support member and is in contact with the lock screw.
6 more elements
Dependencies are inferred from the claim text.