KR0180362B1 - Rear wheel 2-axis self steering apparatus for vehicles - Google Patents

Rear wheel 2-axis self steering apparatus for vehicles Download PDF

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Publication number
KR0180362B1
KR0180362B1 KR1019930027195A KR930027195A KR0180362B1 KR 0180362 B1 KR0180362 B1 KR 0180362B1 KR 1019930027195 A KR1019930027195 A KR 1019930027195A KR 930027195 A KR930027195 A KR 930027195A KR 0180362 B1 KR0180362 B1 KR 0180362B1
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KR
South Korea
Prior art keywords
leaf spring
rear wheel
vehicle
steering
axle
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KR1019930027195A
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Korean (ko)
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KR950017276A (en
Inventor
신동우
Original Assignee
전성원
현대자동차주식회사
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Priority to KR1019930027195A priority Critical patent/KR0180362B1/en
Priority to US08/352,699 priority patent/US5526895A/en
Priority to DE4443786A priority patent/DE4443786A1/en
Publication of KR950017276A publication Critical patent/KR950017276A/en
Application granted granted Critical
Publication of KR0180362B1 publication Critical patent/KR0180362B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/02—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/04—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only arranged substantially parallel to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0162—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during a motion involving steering operation, e.g. cornering, overtaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/445—Self-steered wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/40—Steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/24—Steering, cornering

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

후륜2축을 갖는 상용차량에서 선회시 후륜제2축이 선회 외측이 선회내측보다 넓게 벌려질 수 있도록 하여 실질적으로 조향이 이루어질 수 있도록, 제1, 2리프 스프링 어셈블리를 갖고 후륜제1, 2축을 갖는 차량에 있어서, 상기한 제1리프 스프링의 상측에 후륜제1축을 위치시키고 상기한 제2리프 스프링은 후륜제2축의 하측에 위치시키며, 상기한 제1리프 스프링의 일측은 고정된 브라켓트에 회동가능하게 연결함과 아울러 상기한 제2리프 스프링의 후단부는 차체에 회동가능하게 설치된 새클에 연결하며, 상기한 제1, 2리프 스프링은 차속에 따라 선회시 작동하는 액츄에이터에 의해 회동하는 조향부재에 각각 연결되어 이루어짐을 특징으로 하는 차량용 후륜2축 셀프 조향장치를 제공한다.When turning on a commercial vehicle having two rear wheels, the rear wheel second axle has the first and second leaf spring assemblies and the rear wheel first and second axles so that the outer side of the turning can be wider than the inner side of the turning so that steering can be made substantially. In the vehicle, the rear wheel first axle is positioned above the first leaf spring, and the second leaf spring is located below the rear wheel second axle, and one side of the first leaf spring is rotatable to a fixed bracket. In addition, the rear end of the second leaf spring is connected to a sackle that is rotatably installed on the vehicle body, and the first and second leaf springs are respectively connected to a steering member that is rotated by an actuator that operates when turning in accordance with the vehicle speed. It provides a vehicle rear wheel 2-axis self-steering device characterized in that the connection is made.

Description

차량용 후륜2축 셀프 조향장치Rear Axle Self Steering System for Vehicles

제1도는 본 발명에 의한 셀프 조향장치의 측면도.1 is a side view of a self steering apparatus according to the present invention.

제2도는 본 발명에 의한 셀프 조향을 설명하기 위한 도면이다.2 is a view for explaining the self steering according to the present invention.

[발명의 분야][Field of Invention]

본 발명은 차량용 후륜2축 셀프 조향장치에 관한 것으로서, 보다 상세하게는 일정속도 이하에서 차량이 선회시 차체가 기울어지는 것을 이용하여 후륜제2축을 후방으로 밀어 조타되도록 함으로서 선회반경을 줄일 수 있는 셀프 조향장치에 관한 것이다.The present invention relates to a two-wheel self-steering device for a vehicle, and more particularly, a self-screwing device capable of reducing steering radius by steering the rear axle of two rear axles by using the inclination of the vehicle body when the vehicle turns below a certain speed. It relates to a steering device.

[종래기술][Private Technology]

상용차량은 대부분 2개의 후륜축이 설치되어 적재함부의 중량을 효과적으로 분담할 수 있도록 하고 있다.Most commercial vehicles are equipped with two rear wheel shafts to effectively share the weight of the loading compartment.

이러한 후륜2축 차량은 2축을 동시에 지지하는 리프 스프링 방식과 차축별로 독립하여 지지하는 분리형 리프 스프링 방식이 있다.The two-wheeled rear axle vehicle has a leaf spring method for simultaneously supporting two shafts and a separate leaf spring method for independently supporting each axle.

그러나 후륜2축 차량은 선회시 노면으로부터 접지저항을 많이 받기 때문에 타이어의 마모량이 증가하게 되고, 또 선회반경이 커지는 문제점이 있다.However, since the rear two-wheeled vehicle receives a lot of ground resistance from the road surface when turning, tire wear increases and the turning radius increases.

[발명의 요약][Summary of invention]

본 발명은 상기한 바와 같은 종래 기술의 문제점을 해소하기 위하여 발명된 것으로서, 본 발명의 목적은 선회시 후륜축이 자체적으로 조향기능을 갖도록 하는 차량용 후륜2축 셀프 조향장치를 제공하는 데 있다.The present invention has been invented to solve the problems of the prior art as described above, an object of the present invention is to provide a rear wheel two-axis self-steering device for a vehicle so that the rear wheel shaft has its own steering function when turning.

상기한 본 발명의 목적을 실현하기 위하여, 제1, 2리프 스프링 어셈블리를 갖고 후륜제1, 2축을 갖는 차량에 있어서, 상기한 제1리프 스프링의 상측에 후륜제1축을 위치시키고 상기한 제2리프 스프링은 후륜제2축의 상측에 위치시키며, 상기한 제1리프 스프링의 일측은 고정된 브라켓트에 회동가능하게 연결함과 아울러 상기한 제2리프 스프링의 후단부는 차체에 회동가능하게 설치된 새클에 연결하며, 상기한 제1, 2리프 스프링은 차속에 따라 선회시 작동하는 액츄에이터에 의해 회동하는 조향부재에 각각 연결되어 이루어짐을 특징으로 하는 차량용 후륜2축 셀프 조향장치를 제공한다.In order to realize the above object of the present invention, in a vehicle having first and second leaf spring assemblies and having first and second rear wheels, the first rear wheel first axle is positioned above the first first leaf spring, and the second The leaf spring is positioned above the rear axle second shaft, and one side of the first leaf spring is rotatably connected to the fixed bracket, and the rear end of the second leaf spring is connected to the sackle rotatably installed on the vehicle body. The first and second leaf springs are connected to a steering member that is rotated by an actuator that operates when the vehicle rotates according to the vehicle speed, thereby providing a rear wheel two-axis self steering apparatus for a vehicle.

상기한 조향부재는 액츄에이터가 연결되는 제1아암과, 링크를 통하여 제1리프 스프링이 연결되는 제2아암과, 제2리프 스프링이 연결되는 제3아암을 포함하여 이루어짐을 특징으로 한다.The steering member may include a first arm to which the actuator is connected, a second arm to which the first leaf spring is connected through a link, and a third arm to which the second leaf spring is connected.

상기한 조향부재는 선회시 발생되는 차체의 기울어짐에 따라 변위를 갖는 제1리프 스프링으로부터 힘을 받아 후륜제2축을 밀거나 당김으로서 조타될 수 있도록 하는 차량용 후륜2축 셀프 조향장치이다.The steering member is a rear wheel two-axis self steering apparatus for a vehicle that can be steered by pushing or pulling the second rear wheel axle with a force from a first leaf spring having a displacement as the vehicle body is inclined.

[본 발명의 바람직한 실시예][Preferred Embodiments of the Invention]

제1도는 본 발명에 의한 셀프 조향장치의 측면도로서, 차량의 일측부위만 도시하고 있으나, 그 반대측면은 동일한 구조로 이루어지므로 상세한 설명을 생략한다.1 is a side view of the self-steering device according to the present invention, but only one side of the vehicle is illustrated, and the opposite side thereof is made of the same structure, and thus detailed description thereof will be omitted.

차량의 사이드 프레임(2)의 아래측으로 후륜제1축(4)과 후륜제2축(6)이 설치된다.The rear wheel first axle 4 and the rear wheel second axle 6 are provided below the side frame 2 of the vehicle.

상기한 후륜제1축(4)은 후륜제2축(6)보다 차량의 앞쪽에 설치되는 축으로서 제1리프 스프링(8)의 중앙에 U볼트등으로 결합되고, 후륜제2축(6)은 제2리프 스프링(10)의 중앙에 U볼트로 결합되는데, 후륜제1축(4)은 제1리프 스프링(8)의 상측에 위치하고, 후륜제2축(6)은 제2리프 스프링(10)의 하측에 위치한다.The rear wheel first axle 4 is a shaft provided in front of the vehicle than the rear wheel second axle 6 and is coupled to the center of the first leaf spring 8 by a U bolt or the like. Is coupled to the center of the second leaf spring 10 by a U bolt, the rear wheel first shaft 4 is located above the first leaf spring 8, the rear wheel second shaft 6 is the second leaf spring ( 10) is located on the lower side.

상기한 제1리프 스프링(8)은 일측단부가 사이드 프레임(2)에 고정된 브라켓트(12)에 회동가능하게 결합되며, 타측단부가 조향부재(14)와 링크(16)에 의해 연결되고 있다.The first leaf spring 8 is rotatably coupled to a bracket 12 fixed at one end thereof to the side frame 2, and the other end thereof is connected by a steering member 14 and a link 16. .

그리고 상기한 제2리프 스프링(10)의 후단부는 사이드 프레임(2)에 새클(18)에 의해 연결되고 있으며, 전단부는 상기한 조향부재(14)와 직접연결되고 있다.The rear end of the second leaf spring 10 is connected to the side frame 2 by the sackle 18, and the front end is directly connected to the steering member 14.

상기한 조향부재(14)는 사이드 프레임(2)에 고정설치된 브라켓트(20)에 회동가능하게 설치되고 있는데, 이 브라켓트(20)는 후방으로 연장된 돌출단(22)을 갖고 있다.The steering member 14 is rotatably installed on the bracket 20 fixed to the side frame 2, and the bracket 20 has a protruding end 22 extending rearward.

상기한 돌출단(22)은 실질적으로 본 발명이 의도하는 셀프 조향을 위한 액츄에이터(24)를 설치하기 위하여 제공된다.The projecting end 22 is provided for installing the actuator 24 for self-steering substantially as the present invention intends.

이 액츄에이터(24)는 도시되지 않은 차속센서와 조향각 센서로부터 전해지는 신호에 따라 온/오프되어 신장가능한 상태 또는 신장 불가능한 상태를 유지하는 솔레노이드 밸브류가 사용될 수 있다.The actuator 24 may be a solenoid valve that is turned on or off in accordance with a signal transmitted from a vehicle speed sensor and a steering angle sensor (not shown) to maintain a stretchable state or a non-expandable state.

상기한 액츄에이터(24)는 돌출단(22)과 연결된 그 반대측단이 상기한 조향부재(14)에 연결되어 이 조향부재의 회동력을 선택적으로 흡수할 수 있도록 되어 있다.The actuator 24 has an opposite end connected to the protruding end 22 connected to the steering member 14 to selectively absorb the rotational force of the steering member.

상기한 조향부재(14)는 브라켓트(20)에 회동가능하게 설치되는 보스부(26)와, 이 보스부에서 외측으로 각각 연장되는 제1아암(28), 제2아암(30), 제3아암(32)을 보유하고 있다.The steering member 14 includes a boss portion 26 rotatably installed on the bracket 20, and first arms 28, second arms 30, and third extending outwardly from the boss portion, respectively. It has an arm 32.

상기한 아암들(28,30,32)은 그 선단에 각각 조인트(34,36,38)를 갖고 있는데, 조인트(34)는 액츄에이터(24)와 연결되고, 다른 조인트(36)는 링크(16)와 연결되며, 또다른 조인트(38)는 제2리프 스프링(10)과 연결된다.The arms 28, 30, 32 have joints 34, 36, 38 at their ends, respectively, the joint 34 is connected to the actuator 24, and the other joint 36 is a link 16. ) And another joint 38 is connected to the second leaf spring 10.

도면중 미설명 부호 40은 제1축 차륜이고, 42는 제2축 차륜을 지칭한다.In the drawing, reference numeral 40 denotes a first shaft wheel, and 42 denotes a second shaft wheel.

이와 같이 이루어지는 본 발명의 셀프 조향장치는, 일정한 속도를 임계속도로 하여 그 속도이하인 경우에만 후륜제2축(6)을 조향에 관계되도록 하는 것으로서 이하 그 작용을 설명한다.The self-steering device of the present invention thus constitutes the rear wheel second axle 6 in relation to steering only when the constant speed is the critical speed and the speed is below.

차량이 주행중 선회를 하게 되면, 원심력에 의해 차량의 선회 내측이 들려지고 외측이 내려앉는 차체 기울임이 발생된다.When the vehicle makes a turn while driving, the vehicle body tilting occurs when the inside of the vehicle is lifted by the centrifugal force and the outside is lowered.

이러한 현상으로 선회 외측은 차측과 가까워지고 선회 내측은 차축과 멀어지게 되므로 리프 스프링은 선회 외측의 경우 눌림을 받아 길이 방향으로 신장하는 상태가 되고, 선회 내측의 리프 스프링은 들림으로 휨이 발생하게 된다.Due to this phenomenon, the outer side of the turning is closer to the vehicle side and the inner side of the turning is farther from the axle, so that the leaf spring is pressed and extended in the longitudinal direction in the outer side of the turning, and the leaf spring inside the turning is lifted by lifting. .

이러한 차체의 기울임 상태로 선회를 할 때 차속이 임계속도 이상인 경우에는, 액츄에이터(24)가 오프상태로 제어되는데, 이와 같이 액츄에이터(24)가 오프상태로 제어되면 선회 외측의 리프 스프링이 신장되는 상태가 되어도 제1리프 스프링(8)의 신장력은 조향부재(14)에 전달되지만, 액츄에이터(24)의 록킹으로 조향부재는 회전하지 않게 된다.When the vehicle speed is more than the critical speed when turning in such an inclined state of the vehicle body, the actuator 24 is controlled to be in an off state. Thus, when the actuator 24 is controlled to be in an off state, the leaf spring outside the turning is extended. Even if the extension force of the first leaf spring 8 is transmitted to the steering member 14, the steering member is not rotated by the locking of the actuator 24.

따라서 제2a도에 도시한 바와 같이 후륜제1, 2축(4,6)이 평행한 상태로 조향된다.Therefore, as shown in FIG. 2A, the rear wheel first and second shafts 4 and 6 are steered in parallel.

그런데 임계속도 이하에서 조향을 하게 되면 액츄에이터(24)가 온 상태로 제어되어 액츄에이터(24)는 신장가능한 상태가 된다.However, when steering is performed below the critical speed, the actuator 24 is controlled to be in an on state, and the actuator 24 is in a stretchable state.

따라서 상기한 바와 같이 제1리프 스프링(8)의 길이 방향변위는 조향부재(14)의 제2아암(30)을 상방향으로 미는 힘으로 바뀌게 된다.Therefore, as described above, the longitudinal displacement of the first leaf spring 8 is changed to a force pushing the second arm 30 of the steering member 14 upward.

이 힘에 의해 조향부재(14)는 도면에서 보아 시계방향으로 회동할 수 있는데, 이것은 액츄에이터(24)가 온상태이므로 가능하게 된다.This force allows the steering member 14 to rotate clockwise as seen in the drawing, which is possible because the actuator 24 is on.

이때 조향부재(14)의 회전량은 액츄에이터(24)의 신장량에 비례하게 되는데, 이와 같이 조향부재(14)가 회전함에 의해 제2아암(30)과 제3아암(32)도 함께 회전하게 된다.At this time, the amount of rotation of the steering member 14 is proportional to the amount of elongation of the actuator 24. As the steering member 14 rotates as described above, the second arm 30 and the third arm 32 also rotate together. .

따라서 제3아암(32)은 제2리프 스프링(10)을 후방으로 미는 힘을 갖게 된다.Therefore, the third arm 32 has a force pushing the second leaf spring 10 backward.

그런데 제1리프 스프링(8)은 후륜제1축(4)의 아래측에 설치되어 있고, 또 타측단이 브라켓트(12)에 의해 회동은 가능하지만 길이방향의 이동이 불가능하게 되어 있기 때문에 제1리프 스프링(8)은 당김되지 않고 탄성적으로 휘어지게 된다.By the way, since the 1st leaf spring 8 is provided in the lower side of the 1st rear wheel 4, and the other end is rotatable by the bracket 12, it is impossible to move in a longitudinal direction, but 1st The leaf spring 8 is elastically bent without pulling.

반면에 제2리프 스프링(10)은 후단부가 사이드 프레임(2)에 회동가능하게 설치된 새클(18)에 연결되어 있기 때문에 차량의 후방으로 변위를 발생하게 된다.On the other hand, since the rear end portion of the second leaf spring 10 is connected to the sackle 18 rotatably installed on the side frame 2, the second leaf spring 10 generates displacement to the rear of the vehicle.

이 제2리프 스프링(10)의 길이방향 변위는 이 스프링에 U볼트로 고정된 후륜제2축(6)을 함께 이동시키게 된다.The longitudinal displacement of the second leaf spring 10 causes the rear wheel second shaft 6 fixed with the U bolt to move together.

즉 제2리프 스프링(10)과 후륜제2축(6)이 고정되어 있기 때문에 제2리프 스프링(10)의 이동은 곧 후륜제2축(6)을 이동시키는 결과가 된다.That is, since the second leaf spring 10 and the rear wheel second shaft 6 are fixed, the movement of the second leaf spring 10 results in the movement of the rear wheel second shaft 6.

이때 차량의 선회내측에 이와 동일한 구조로 설치된 조향장치는 후륜제1축(4)이 사이드 프레임(2)과 멀어지기 때문에 상기한 작용과는 반대로 조향부재(14)를 반시계 방향으로 회동시키게 된다.At this time, the steering device installed in the same inner structure of the vehicle rotates the steering member 14 counterclockwise as opposed to the above operation because the rear wheel first shaft 4 is separated from the side frame 2. .

따라서 후륜제2축(6)은 제2b도에 도시한 바와 같이 선회 외측이 벌려지고 선회 내측이 좁혀지는 상태가 된다.Therefore, as shown in FIG. 2B, the rear wheel second axle 6 is in a state in which the outer side of the turning is widened and the inner side of the turning is narrowed.

그러므로 후륜제2축(6)에 설치된 제2축 차륜(42)은 마치 조타된 것과 같은 상태로 변형된다.Therefore, the 2nd axle wheel 42 provided in the 2nd rear wheel axle 6 is deformed as if it were steered.

즉 셀프 조향이 이루어지게 되는데, 이와 같이 선회시 후륜제2축의 차륜이 조타되면 특히 사용차량인 경우 노면과의 접지저항을 줄일 수 있어 타이어의 마모량을 줄일 수 있으며, 또 전훈륜이 모두 조타되는 것이므로 선회반경을 최소화할 수 있다.That is, self-steering is achieved. If the wheels of the second axle of the rear wheels are steered in this way, especially in the case of a used vehicle, the ground resistance with the road surface can be reduced, thereby reducing the amount of tire wear, and all the front wheels are steered. The turning radius can be minimized.

Claims (3)

제1, 2리프 스프링 어셈블리를 갖고 후륜제1, 2축을 갖는 차량에 있어서, 상기한 제1리프 스프링의 상측에 후륜제1축을 위치시키고 상기한 제2리프 스프링은 후륜제2축의 하측에 위치시키며, 상기한 제1리프 스프링의 일측은 고정된 브라켓트에 회동가능하게 연결함과 아울러 상기한 제2리프 스프링의 후단부는 차체에 회동가능하게 설치된 새클에 연결하며, 상기한 제1, 2리프 스프링은 차속에 따라 선회시 온/오프제어되는 액츄에이터에 의해 회동가능한 상태 또는 회동불가능한 상태의 조향부재에 각각 연결되어 이루어짐을 특징으로 하는 차량용 후륜2축 셀프 조향장치.In a vehicle having first and second leaf spring assemblies and first and second rear wheels, the first rear wheel first shaft is positioned above the first first leaf spring, and the second leaf spring is positioned below the second rear wheel axle. One side of the first leaf spring is rotatably connected to the fixed bracket, and the rear end of the second leaf spring is connected to a sackle rotatably installed on the vehicle body, and the first and second leaf springs are A two-wheel self-steering device for a vehicle, characterized in that the vehicle is connected to a steering member in a rotatable state or a non-rotatable state by an actuator controlled on / off when turning in accordance with the vehicle speed. 제1항에 있어서, 조향부재는 액츄에이터가 연결되는 제1아암과, 링크를 통하여 제1리프 스프링이 연결되는 제2아암과, 제2리프 스프링이 연결되는 제2아암을 포함하여 이루어짐을 특징으로 하는 차량용 후륜2축 셀프 조향장치.2. The steering member of claim 1, wherein the steering member comprises a first arm to which the actuator is connected, a second arm to which the first leaf spring is connected via a link, and a second arm to which the second leaf spring is connected. Two-wheeled self-steering device for vehicles. 제1항에 있어서, 조향부재는 선회시 발생되는 차체의 기울어짐에 따라 변위를 갖는 제1리프 스프링으로부터 힘을 받아 후륜제2축을 밀거나 당김으로서 조타될 수 있도록 하는 차량용 후륜2축 셀프 조향장치.2. The rear wheel two-axis self steering apparatus for a vehicle according to claim 1, wherein the steering member can be steered by pushing or pulling the rear axle of the second axle with a force from the first leaf spring having a displacement as the vehicle body is inclined. .
KR1019930027195A 1993-12-10 1993-12-10 Rear wheel 2-axis self steering apparatus for vehicles KR0180362B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019930027195A KR0180362B1 (en) 1993-12-10 1993-12-10 Rear wheel 2-axis self steering apparatus for vehicles
US08/352,699 US5526895A (en) 1993-12-10 1994-12-01 Rear wheel self-steering system for vehicle
DE4443786A DE4443786A1 (en) 1993-12-10 1994-12-08 Steering system for truck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930027195A KR0180362B1 (en) 1993-12-10 1993-12-10 Rear wheel 2-axis self steering apparatus for vehicles

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KR950017276A KR950017276A (en) 1995-07-20
KR0180362B1 true KR0180362B1 (en) 1999-03-20

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KR1019930027195A KR0180362B1 (en) 1993-12-10 1993-12-10 Rear wheel 2-axis self steering apparatus for vehicles

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