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US 12,649,513 B2Granted
Vehicle steering apparatus
AssigneeHl Mando Corporation
InventorsKyung Min Ko, Sang Hee Ahn, Jung Sik Park
Life of this patent
Estimating the term…
Abstract
According to embodiments of the present invention, engine power consumption can be prevented, the number of components can be reduced, vehicle control functions such as automatic parking, lane keeping, driving assistance according to road surface conditions, steering vibration reduction, and autonomous driving control can be used and thus a driver's convenience can be increased, and stability can be enhanced by providing two motor-reducer structures.
Claims16
A vehicle steering apparatus comprising:
- a housing accommodating a ball screw, a ball nut coupled to the ball screw via balls, and a sector shaft engaged with the ball nut;
- a first reducer coupled to an output shaft connected with the ball screw;
- and
- a first motor for driving the first reducer,
- wherein a second reducer connected with the sector shaft is coupled to the housing, and driven by a second motor, and
- wherein the second reducer comprises:
- a hollow case coupled with the housing and the second motor;
- a first gear member coupled to the sector shaft;
- a second gear member engaged with the first gear member;
- and
- a rotation support member coupled to a motor shaft of the second motor and the second gear member,
- wherein the first gear member comprises a coupling portion coupled to the sector shaft inside of the housing, a cover member is provided between the case and the housing, and the coupling portion is coupled to the cover member via a bearing.
9 more elements
A vehicle steering apparatus comprising:
- a housing accommodating a ball screw, a ball nut coupled to the ball screw via balls, and a sector shaft engaged with the ball nut;
- a first reducer coupled to an output shaft connected with the ball screw;
- and
- a first motor for driving the first reducer,
- wherein a second reducer connected with the sector shaft is coupled to the housing and driven by a second motor, and
- wherein the second reducer comprises:
- a hollow case coupled with the housing and the second motor;
- a first gear member coupled to the sector shaft;
- a second gear member engaged with the first gear member;
- and
- a rotation support member coupled to a motor shaft of the second motor and the second gear member,
- wherein a third gear is formed on an inner circumferential surface of the case, and
- wherein the second gear member comprises a third gear portion, and a fourth gear engaged with the third gear is formed on an outer circumferential surface of the third gear portion.
10 more elements
Dependencies are inferred from the claim text.