KR100250199B1 - Hydraulic power-assisted steering - Google Patents

Hydraulic power-assisted steering Download PDF

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Publication number
KR100250199B1
KR100250199B1 KR1019950065334A KR19950065334A KR100250199B1 KR 100250199 B1 KR100250199 B1 KR 100250199B1 KR 1019950065334 A KR1019950065334 A KR 1019950065334A KR 19950065334 A KR19950065334 A KR 19950065334A KR 100250199 B1 KR100250199 B1 KR 100250199B1
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KR
South Korea
Prior art keywords
oil
cylinder
steering
high speed
oil outlet
Prior art date
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KR1019950065334A
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Korean (ko)
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KR970041054A (en
Inventor
오원진
Original Assignee
류정열
기아자동차주식회사
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Priority to KR1019950065334A priority Critical patent/KR100250199B1/en
Publication of KR970041054A publication Critical patent/KR970041054A/en
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Publication of KR100250199B1 publication Critical patent/KR100250199B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/10—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of power unit
    • B62D5/12—Piston and cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/102—Shaft arrangements; Shaft supports, e.g. bearings
    • B60Y2410/1022—Concentric shaft arrangements

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Power Steering Mechanism (AREA)

Abstract

PURPOSE: A steering system of a vehicle solves a problem of the lightening of a steering force on a high speed running by mounting a cylinder on the outside of a middle shaft. CONSTITUTION: A middle shaft(17) is mounted in a cylinder(20). A piston(22) elastically supported by a spring(26) is mounted in the cylinder(20). An oil inlet(18) and oil outlets(24) are formed on the outside of the cylinder(20). On a high speed running, if an oil quantity discharged to an oil inlet(18) is increased, a rotation torque for rotating a universal joint is increased. On a low speed running, a piston closes a hole on a left oil outlet(24) such that the oil is discharged through a right oil outlet(24). On the high speed running, a hole on a left oil outlet(24) is opened such that the oil is discharged through the left oil outlet(24). Thus, on a high speed driving, a vehicle is stably and safely driven by improving a steering force thereof.

Description

자동차의 스티어링 장치Steering device of a car

제1도는 종래 자동차의 스티어링 장치의 분리된 상태의 사시도.1 is a perspective view of a state in which the steering apparatus of a conventional vehicle is separated.

제2도는 본 발명에 따른 자동차 스티어링 장치의 중간축을 나타낸 사시도.2 is a perspective view showing an intermediate axis of the vehicle steering apparatus according to the present invention.

제3(a)도는 저속주행시의 중간축의 단면도이고, 제3(b)도는 고속주행시의 중간축의 단면도이다.3 (a) is a sectional view of the intermediate axis at the time of low speed driving, and FIG. 3 (b) is a sectional view of the intermediate axis at the time of high speed driving.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 핸들 12 : 조향축10: handle 12: steering shaft

14 : 브라켓 16 : 유니버셜조인트14 Bracket 16: Universal Joint

17 : 중간축 18 : 오일 유입구17: intermediate shaft 18: oil inlet

20 : 실린더 22 : 피스톤20: cylinder 22: piston

24 : 오일 유출구 26 : 스프링24: oil outlet 26: spring

28 : 바아28: Bar

본 발명은 자동차의 스티어링 장치(Steering System)에 관한 것으로, 더욱 상세하게는 고속 주행시 조타력을 증가시켜 안정된 주행 성능을 얻을 수 있도록 한 자동차의 스티어링 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering system of a vehicle. More particularly, the present invention relates to a steering apparatus of a vehicle to increase steering power during high-speed driving so as to obtain stable driving performance.

예시도면 제1도는 종래 자동차의 스티어링 장치의 분리된 상태를 나타낸 도면으로서, 핸들(10), 조향축(12), 브라켓(14), 유니버셜 조인트(16) 등으로 구성된 것이다. 일반적으로 유니버셜 조인트(Universal joint)는 자재이음을 말하는 것으로, 두 축이 일직선상에 있지 않고 어떤 각도를 가진 두 개의 축 사이에 동력을 전달할 때 사용하는 조인트로서 주로 트랜스미션에서 구동바퀴까지 동력 전달 계통의 연결부에 사용되고 있다. 구조에 따라 플렉시블조인트, 카르단 조인트, 트랙터 조인트, 등속 조인트 등으로 분류할 수 있다.Exemplary Drawing 1 is a view showing a separated state of a steering apparatus of a conventional vehicle, and is composed of a handle 10, a steering shaft 12, a bracket 14, a universal joint 16 and the like. In general, universal joint is a material joint. It is a joint used when two shafts are not in line and transfer power between two shafts at an angle and are mainly used in transmission to drive wheels. It is used for the connection. According to the structure, it can be classified into flexible joint, cardan joint, tractor joint, constant velocity joint and so on.

또한 스티어링 휠(Stteering wheel)은 스티어링 핸들이라고도 하며 자동차의 진행 방향을 바꾸기 위하여 운전자가 조작하는 부품을 말하는 것이다. 상기 자동차의 핸들은 외측의 림, 중앙 부분의 허브, 림과 허브를 연결하는 스포크로 구성되어 있으며 허브와 스포크에 경적 기구를 조합한 것이 많고, 림의 지름이 크면 조향 조작을 가볍게 할 수 있으나 크게 움직여야 할 필요가 있으며, 지름이 적으면 빠르게 돌릴 수 있으나 조작력은 무거워지므로 자동차의 성격에 따라 일치되는 크기가 선택되는 것이다. 또한 림의 굵기나 재질도 운전 감각에 큰 영향을 주는 것이다.The steering wheel, also known as the steering wheel, refers to parts that the driver manipulates to change the direction of travel of the vehicle. The steering wheel of the vehicle is composed of an outer rim, a hub at the center portion, spokes connecting the rim and the hub, and a combination of a horn mechanism with the hub and the spoke, and a large rim diameter allows light steering operation, but greatly It is necessary to move, and if the diameter is small, it can be turned quickly, but the operation force becomes heavy, so the matching size is selected according to the characteristics of the car. In addition, the thickness and material of the rim also greatly affects the driving sensation.

그러나 종래의 자동차의 스티어링 장치는 고속주형시 조타력이 가벼워 스티어링 휠이 돌아가 사고의 위험성이 증대되는 문제가 있었다.However, the steering apparatus of the conventional vehicle has a problem in that the steering force is light when the high speed casting is performed, so that the risk of an accident is increased due to the turning of the steering wheel.

따라서 본 발명은 상기한 종래 자동차의 스티어링 장치에서 고속 주행시 조타력이 가벼워지는 문제를 해결하기 위하여 안출된 것으로, 중간축의 외부에 실린더를 장착하고 실린더 내측에는 피스톤과 스프링을 장착하며 실린더의 외측에는 오일 유입구 및 오일 유출구를 설치한 자동차의 스티어링 장치를 제공하고자 함에 발명의 목적이 있다.Therefore, the present invention was devised to solve the problem that the steering force is lighter at high speed in the above-described conventional steering device of the vehicle, the cylinder is mounted on the outside of the intermediate shaft, the piston and the spring inside the cylinder and the oil on the outside of the cylinder An object of the present invention is to provide a steering apparatus of an automobile provided with an inlet and an oil outlet.

상기와 같은 목적을 실현하기 위한 본 발명은 중간축의 실린더 내측에는 스프링을 탄지한 피스톤을 설치하며 실린더 외측에는 오일 유입구 및 오일 유출구를 설치한 것이다.The present invention for realizing the above object is to install a spring-tight piston inside the cylinder of the intermediate shaft and to install an oil inlet and an oil outlet on the outside of the cylinder.

따라서 본 발명은 자동차를 고속주행 할 때 조타력을 증가시켜 안정되고 안전하게 운전하여 주행할 수 있는 효과가 있다.Therefore, the present invention has the effect of driving a stable and safe driving by increasing the steering power when driving a car at high speed.

본 발명을 첨부된 예시도면 제2도 내지 제3도에 의하여 상세히 설명하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings, FIGS. 2 to 3 as follows.

본 발명은 자동차의 스티어링 장치의 중간측에 있어서, 실린더(20)의 내측에는 스프링(26)이 탄지된 피스톤(22)을 장착하고 실린더(20)의 외측에는 오일 유입구(18) 및 오일 유출구(24)를 설치한 것이다.The present invention, in the intermediate side of the steering device of the vehicle, the inner side of the cylinder 20 is equipped with a piston 22 carried with a spring 26, the outer side of the cylinder 20 oil inlet 18 and oil outlet ( 24) is installed.

상기와 같이 구성된 본 발명의 작용 및 효과는 다음과 같다.The operation and effects of the present invention configured as described above are as follows.

제2도는 본 발명에 따른 중간축을 나타낸 도면으로서, 실린더(20) 내부에는 스프링(26)을 탄지한 피스톤(22)이 설치된 것이다. 실린더(20)의 외측에는 오일 유입구(18)와 오일 유출구(24)가 설치되어 있다.2 is a view showing an intermediate shaft according to the present invention, in which a piston 22 supporting the spring 26 is installed inside the cylinder 20. An oil inlet 18 and an oil outlet 24 are provided outside the cylinder 20.

제3(a)도는 저속 주행시 오일 유입구(18)로 들어온 오일이 우측 오일 유출구(24)로 배출되는 것이고 제3(b)도는 고속 주행시 오일 유입구(18)로 들어온 오일이 좌측 오일 유출구(24)로 배출되는 것이다.FIG. 3 (a) shows that the oil entering the oil inlet 18 at low speed is discharged to the right oil outlet 24 and FIG. 3 (b) shows the oil entering the oil inlet 18 at the high speed driving as the left oil outlet 24. To be discharged.

고속 주행시에는 통상적으로 고속 회전을 감안하여 오일펌프에서 오일 유입구(18)로 토출되는 오일량이 증가하면 유입쪽 실린더의 압력이 증가하며 피스톤(22)이 스프링(26)쪽으로 밀리며 바아(28)와 접촉되어 이때 유니버셜 조인트를 회전 시키기 위한 회전 토크가 증가하는 것이다.In high speed driving, in general, when the amount of oil discharged from the oil pump to the oil inlet 18 increases in consideration of the high speed rotation, the pressure of the inlet cylinder increases, and the piston 22 pushes toward the spring 26 and contacts the bar 28. In this case, the rotation torque for rotating the universal joint is increased.

또한 저속 주행시는 오일 유입구(18)에 들어온 오일이 피스톤(22)과 바아(28)의 틈새를 지나 우측 오일 유출구(24)로 배출되는데 피스톤(22)은 좌측 오일 유출구(24)의 구멍을 막게 되어 오일은 우측 오일 유출구(24)로 배출되는 것이다.In addition, at low speed, the oil entering the oil inlet 18 is discharged through the gap between the piston 22 and the bar 28 to the right oil outlet 24. The piston 22 blocks the hole of the left oil outlet 24. The oil is discharged to the right oil outlet 24.

고속 주행시는 피스톤(22)이 우측으로 밀리면서 스프링(26)과 접촉하게 되고 좌측 오일 유출구(24)의 구멍이 열리게 되어 좌측 오일 유출구(24)로 오일이 배출되는 것이다.At high speed, the piston 22 is pushed to the right side to be in contact with the spring 26 and the hole of the left oil outlet 24 is opened, so that oil is discharged to the left oil outlet 24.

따라서 본 발명은 자동차를 고속주행 할 때 조타력을 증가시켜 안정되고 안전하게 운전하여 주행할 수 있는 효과가 있다.Therefore, the present invention has the effect of driving a stable and safe driving by increasing the steering power when driving a car at high speed.

Claims (1)

핸들의 조향축과 유니버셜조인트를 매개로 연결된 중간축을 갖추어 이루어진 자동차의 스티어링 장치에 있어서, 상기 중간축(17)에 실린더(20)를 내장시키되, 이 실린더(20)의 내측에는 바아(28)의 경사면을 따라 일정한 통로를 형성하는 스프링(26)이 탄지된 피스톤(22)을 장착하고 실린더(20)의 외측에는 오일유입구(18) 및 오일유출구들(24)을 설치한 것을 특징으로 하는 자동차의 스티어링 장치.In a steering apparatus of a vehicle having a steering shaft of a steering wheel and an intermediate shaft connected via a universal joint, a cylinder 20 is embedded in the intermediate shaft 17, and a bar 28 is formed inside the cylinder 20. In the automobile, characterized in that the piston 22, which is supported by a spring 26 forming a constant passage along the inclined surface, is mounted, and an oil inlet 18 and oil outlets 24 are installed outside the cylinder 20. Steering device.
KR1019950065334A 1995-12-29 1995-12-29 Hydraulic power-assisted steering KR100250199B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950065334A KR100250199B1 (en) 1995-12-29 1995-12-29 Hydraulic power-assisted steering

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Application Number Priority Date Filing Date Title
KR1019950065334A KR100250199B1 (en) 1995-12-29 1995-12-29 Hydraulic power-assisted steering

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KR970041054A KR970041054A (en) 1997-07-24
KR100250199B1 true KR100250199B1 (en) 2000-04-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101595666B1 (en) * 2014-12-12 2016-02-19 성균관대학교산학협력단 Mechanical steering system using hydraulic pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101595666B1 (en) * 2014-12-12 2016-02-19 성균관대학교산학협력단 Mechanical steering system using hydraulic pressure

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