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Title:
CORNERING CONTROL SYSTEM FOR AUTOMOBILE
Document Type and Number:
WIPO Patent Application WO/2004/011319
Kind Code:
A1
Abstract:
This invention discloses to a cornering control system for an automobile to minimize an inclination of an outer side of the car body due to cornering by generating a reverse rotating moment against a rotating moment to outer side generated by a centrifugal force generating upon cornering of the automobile. The system comprises a steering sensor (110) sensing an amount of a handle operation by a driver, a steering actuator (300) generating a reverse rotating moment against a rotating moment generated by the centrifugal force upon cornering by steering repeatedly a steering wheel (410) to a reverse direction of cornering, and a steering controller (200) controlling a steering operation of the steering wheel (410) by the steering actuator (300) according to a signal for the steering amount input via the steering sensor (110). The system provides with a comfortable traveling and a safety for traveling upon cornering.

Inventors:
Yoon, Cheol-soo (306 HEWEN BILDING, 165-8 POI-DONG GANGNAM-GU, SEOUL 135-961, KR)
Application Number:
PCT/KR2003/001521
Publication Date:
February 05, 2004
Filing Date:
July 30, 2003
Export Citation:
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Assignee:
Yoon, Cheol-soo (306 HEWEN BILDING, 165-8 POI-DONG GANGNAM-GU, SEOUL 135-961, KR)
International Classes:
B62D1/16; B62D5/00; B62D9/02; (IPC1-7): B62D9/02
Foreign References:
JPH09207792A1997-08-12
JPS6141670A1986-02-28
JPS5948268A1984-03-19
US20020179362A12002-12-05
Download PDF:
Claims:
WHAT IS CLAIMED IS :
1. A cornering control system for an automobile comprising: a steering sensor 110 sensing an amount of a handle operation by a driver; a steering actuator 300 generating a reverse rotating moment against a rotating moment generated by the centrifugal force upon cornering by steering repeatedly a steering wheel 410 to a reverse direction of cornering; and a steering controller 200 controlling a steering operation of the steering wheel 410 by the steering actuator 300 according to a signal for the steering amount input via the steering sensor 110.
2. The cornering control system according to claim 1, wherein the steering actuator 300 is provided to a handle shaft 421 and includes a handle gear 311 formed to be integrated to the handle shaft 421 and having a inscribed gear, a steering gear formed to be integrated to a steering shaft connected to a steering box 423 and engaged via the handle gear 311 and idle gear 313, and a steering shaft rotating means rotating the steering wheel clockwise or counterclockwise according to a control signal input from the steering controller 200 by being constrained to the handle gear 311.
3. The cornering control system according to claim 2, wherein the steering shaft rotating means is a steering actuating motor 321 engaged to the steering gear 312 via a gear by being constrained to the handle gear 311.
4. The cornering control system according to claim 2, wherein the steering shaft rotating means is an actuator 331 constrained to the handle gear 311 and rotated by being hinged to a steering rotating arm 332 of the steering shaft 422.
5. The cornering control system according to claim 1, wherein further comprises a speed sensor 120 causing the steering controller 200 to control a time for a reversed steering through the steering actuator 300 according to a traveling speed of the automobile.
6. The cornering control system according to claim 1, wherein further comprises a inclination sensor 130 causing the steering controller 200 to control a time for a reversed steering through the steering actuator 300 according to the inclination of a body of the automobile.
Description:
CORNERING CONTROL SYSTEM FOR AUTOMOBILE TECHNICAL FIELD This invention relates to a cornering control system for an automobile, and more particular to a system for minimizing an inclination of an outer side of the car body due to cornering by generating a reverse rotating moment against a rotating moment to outer side generated by a centrifugal force generating upon cornering of the automobile.

BACKGROUND ART Generally, an automobile is provided with a suspension between a wheel and a car body in order to absorb a shock generated due to separation from a ground.

The above suspension provides a driver and a passenger with a comfortable feeling by absorbing a shock transferred from the ground during traveling of the automobile.

However, since the wheel and the car body are joined through a suspension such a spring, a suspension of the outer side of the car body is contracted and the other suspension of the inner side of the car body is extended by a rotating moment to the outer side generated from a centrifugal force upon traveling along a curved road. Thus, the car body is inclined considerably to the outer side. Accordingly, there has been a problem that the car body may be overturned if a cornering is continued in such a inclined status.

In order to improve the above problem, a stabilizer may be adopted so that a inclination to the outer side of the car body incurred from the rotating

moment generated by the centrifugal force upon cornering may be minimized, but there has been a problem in that the effect is insignificant.

Further, the inclination of the car body due to the rotating moment generated by the centrifugal force upon cornering may be compensated by lifting manually a shock absorber of a suspension installed in the outer side of the car body. However, there have been still remained problems in that such a structure is complicated and a production cost is very high.

DISCLOSURE OF THE INVENTION Therefore, the invention has been made in view of the above problems, and it is an object of the invention to provide a cornering control system for minimizing an inclination of an outer side of the car body due to cornering by generating a reverse rotating moment against a rotating moment to outer side generated by a centrifugal force generating upon cornering of the automobile.

The system of the invention provides a steering actuator for repeating a returning operation of a steering wheel after generating a reverse rotating moment by steering the steering wheel fine to the opponent side of a cornering during operating a handle in order to generate a reversed rotating moment against a rotating moment generated by a centrifugal force to the outer side generated upon operating the handle for a cornering.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and other advantages of the invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: Fig. 1 is a front and plan view for showing the inclined status of an prior automobile.

Fig. 2 is a front and plan view for showing the inclined status of an automobile according to the invention.

Fig. 3 is view for showing a principal constitution of an controller according to the invention.

Fig. 4 is a partly sectional fragmentary perspective view for showing an embodiment of a steering actuator according to of the invention.

Fig. 5 is a sectional front view for showing the other embodiment of a steering actuator according to the invention.

Fig. 6 is a view for showing an example of operation process according to the invention.

BEST MODE FOR CARRYING OUT THE INVENTION The invention will be described in further detail by way of example with reference to the accompanying drawings.

A system of the invention enables to minimize an inclination of an outer side of the car body due to cornering by generating repeatedly in an instant a reverse rotating moment against a rotating moment generated by a centrifugal force upon cornering of the automobile.

The system comprises a steering sensor 110 sensing an amount of a handle operation by a driver, a steering actuator 300 generating a reverse rotating moment against a rotating moment generated by the centrifugal force upon cornering by steering repeatedly a steering wheel 410 to a reverse direction of cornering, and a steering controller 200 controlling a steering operation of the steering wheel 410 by the steering actuator 300 according to a signal for the steering amount input via the steering sensor 110.

Preferably, a handle shaft 421 is provided with the steering actuator 300. The steering actuator 300 consists of a handle gear 311 formed to be

integrated to the handle shaft 421 and having a inscribed gear, a steering gear formed to be integrated to a steering shaft connected to a steering box 423 and engaged via the handle gear 311 and idle gear 313, and a steering shaft rotating means rotating the steering wheel clockwise or counterclockwise according to a control signal input from the steering controller 200 by being constrained to the handle gear 311.

Meanwhile, the steering shaft rotating means may be a steering actuating motor 321 engaged to the steering gear 312 via a gear by being constrained to the handle gear 311. Alternatively, the steering shaft rotating means may be an actuator 331 constrained to the handle gear 311 and rotated by being hinged to a steering rotating arm 332 of the steering shaft 422.

The actuator 331 is installed separately. The actuator 331 may be an oil or air pressure actuator operated by receiving an oil or air pressure from an oil or air pressure pump controlled by the steering controller 200. Alternatively, the actuator 331 may be a solenoid actuator operated by an electrical signal provided from the steering controller 200. Alternatively, the actuator 331 may be consisted of a screw axis motor controlled and operated by the steering controller 200, and a screw axis actuator having a screw axis rotated frequently by the screw axis motor.

As an embodiment of the invention, the system further comprises a speed sensor 120 causing the steering controller 200 to control a time for a reversed steering through the steering actuator 300 according to a traveling speed of the automobile.

As the other embodiment of the invention, the system further comprises a inclination sensor 130 causing the steering controller 200 to control a time for a reversed steering through the steering actuator 300 according to the

inclination of a body of the automobile. The inclination sensor 130 may detect through an amount of the contraction of the shock absorber.

A reference number"210"designates an operating switch enabling a driver to operate the system of the invention.

The operation of the system of the invention will be explained as follows.

The system of the invention, as described above, comprises a steering sensor 110 sensing an amount of a handle operation by a driver, a steering actuator 300 generating a reverse rotating moment against a rotating moment generated by the centrifugal force upon cornering by steering repeatedly a steering wheel 410 to a reverse direction of cornering, and a steering controller 200 controlling a steering operation of the steering wheel 410 by the steering actuator 300 according to a signal for the steering amount input via the steering sensor 110. If a driver rotates and steers a handle of an automobile provided with the system for a cornering, the steering sensor 110 provided to the handle shaft 421 detects an amount of the steering operation and input it to the steering controller 200.

If the amount of the steering operation from the steering sensor 110 is input to the steering controller 200, the steering controller 200 compares and analyzes the amount of the steering operation and the signals from the speed sensor 120 and the inclination sensor 130 as described in the another embodiments of the invention, and controls and operates the steering actuator 300.

Then, the steering actuator 300 steers the steering shaft 422 fine to the reverse steering direction during operating a handle, and lifts up the car body inclined to the outer side by generating a reverse rotating moment against a rotating moment generated from a centrifugal force upon cornering. If such a manipulation is repeated, an amount of inclination upon cornering is minimized.

INDUSTRIAL APPLICABILITY Accordingly, the system of the invention provides a driver or a passenger with a comfortable traveling. Further, since the amount of inclination to the outer side is decreased upon cornering, it is possible to increase the limited speed of the automobile, and eases the congestion of traffic.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.