KR20030080475A - a suspension system of vehicles - Google Patents

a suspension system of vehicles Download PDF

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Publication number
KR20030080475A
KR20030080475A KR1020020019122A KR20020019122A KR20030080475A KR 20030080475 A KR20030080475 A KR 20030080475A KR 1020020019122 A KR1020020019122 A KR 1020020019122A KR 20020019122 A KR20020019122 A KR 20020019122A KR 20030080475 A KR20030080475 A KR 20030080475A
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KR
South Korea
Prior art keywords
control arm
cross member
turning
lower control
vehicle
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KR1020020019122A
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Korean (ko)
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KR100471826B1 (en
Inventor
우승훈
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현대자동차주식회사
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Priority to KR10-2002-0019122A priority Critical patent/KR100471826B1/en
Publication of KR20030080475A publication Critical patent/KR20030080475A/en
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Publication of KR100471826B1 publication Critical patent/KR100471826B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/43—Fittings, brackets or knuckles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE: A suspension system for a vehicle is provided to improve traveling stability and turning stability by increasing cornering force with cambering the outer race negatively and the inner race positively in turning. CONSTITUTION: A lower control arm(2) is installed in a cross member(1), and inclined downward. A steering knuckle(3) is mounted to the lower control arm, and a strut(4) is inclined to the center of the vehicle and installed to the steering knuckle. A cross control arm(7) is placed in the lower part of the cross member, and connected to a bracket(6) formed in the lower control arm by a hinge. An end of a trailing arm is fixed perpendicularly to the cross member, and the other end is installed to the other cross member by a bush.

Description

자동차의 현가장치{a suspension system of vehicles}Suspension system of vehicles

본 발명은 자동차의 현가장치에 관한 것으로, 특히 직진 안정성과 선회력을 동시에 향상된 자동차의 현가장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a suspension of an automobile, and more particularly, to a suspension of an automobile having improved straight stability and turning force.

현가장치는 차체와 바퀴를 연결하는 장치로서 주행중 노면으로부터 전달되는진동이나 충격을 완화하여 승차감과 주행시의 안정성을 향상시키는 역할을 하며, 좌우 차륜이 하나의 강체 죽 양단에 설치된 일체 차축식 현가장치(rigid axle type suspension)와 한쪽 차륜의 거동이 다른 한쪽 차륜의 거동에 영향을 주지 않도록 각각 설치된 독립현가장치(independent suspension)로 크게 구분된다.Suspension is a device that connects the vehicle body and wheels, and relieves vibrations and shocks transmitted from the road surface while driving, and improves riding comfort and driving stability. The rigid axle type suspension and the independent wheel suspension are largely divided into independent suspensions so as not to affect the other wheel's behavior.

도 1에는 상기 독립현가장치 중에서 맥퍼슨 스트럿(Mcpherson strut) 방식의 현가장치를 개략적으로 도시한 것으로서, 이 현가장치는 상/하 콘트롤아암을 사용하는 위시본 타입 현가장치(Wishbone type suspension)에서 상부 콘트롤아암 대신 조향너클에 쇽업소버와 코일스프링으로 이루어진 스트럿을 설치하여 이루어진 것이다.Figure 1 schematically shows a suspension of the Mcpherson strut type of the independent suspension, the suspension is the upper control in the wishbone type suspension using the upper and lower control arms (Wishbone type suspension) Instead of the arm, the steering knuckle is fitted with struts composed of shock absorbers and coil springs.

즉, 도시된 바와 같이, 크로스멤버(1 ; 앞부분에 井(정)자형 프레임이 적용된 경우에는 그 앞쪽 사이드부)에 하부 콘트롤아암(2)이 회동가능하게 장착되고, 이 하부 콘트롤아암(2)에 조향너클(3)의 하부가 볼조인팅되며, 이 조향너클(3)의 상부에 코일스프링을 구비한 스트럿(4)이 고정되고, 이 스트럿(4)의 상단은 차체에 고정되며, 상기 조향너클(3)에 형성된 스핀들에 바퀴(5)가 장착되는 구조로 이루어져 있다.That is, as shown, the lower control arm 2 is rotatably mounted on the cross member 1 (the front side part of the front when the positive shape frame is applied), and the lower control arm 2 The lower part of the steering knuckle 3 is ball-jointed, and a strut 4 having a coil spring is fixed to the upper part of the steering knuckle 3, and an upper end of the strut 4 is fixed to the vehicle body. It consists of a structure that the wheel (5) is mounted on the spindle formed in the steering knuckle (3).

이 타입의 현가장치는 바퀴(5)의 불필요한 횡력(lateral force) 발생이 최소화되어 직진 안정성이 우수하나, 반면 선회시에는 차체의 롤(roll)에 의하여 선회 외륜(5)의 캠버가 과도하게 정(+)의 방향으로 증가되어(선회 내륜의 캠버는 부(-)의 방향으로 증가) 선회력(cornering force)가 약해지는 단점이 있다.This type of suspension has excellent straight stability due to minimizing the occurrence of unnecessary lateral force of the wheels 5, while the camber of the turning outer ring 5 is excessively fixed by the roll of the vehicle body when turning. There is a disadvantage in that the turning force is weakened by increasing in the positive direction (the camber of the turning inner ring increases in the negative direction).

따라서, 도 2에 도시된 바와 같이, 하부 콘트롤아암(2)의 하향 경사도를 증가시키고 스트럿(4)의 상부를 차량의 중심쪽으로 경사지게 설치하여 선회시 외륜(5)의 캠버가 부(-)의 방향(선회 내륜의 캠버는 정(+)의 방향으로 증가)으로 줄어들 수 있도록 함으로써 선회력을 향상시켰으나, 이 경우에는 반대로 직진 안전성이 저하되는 문제점이 있었다.Accordingly, as shown in FIG. 2, the downward inclination of the lower control arm 2 is increased and the upper portion of the strut 4 is inclined toward the center of the vehicle so that the camber of the outer ring 5 is negative when turning. The turning force was improved by being able to decrease in the direction (the camber of the turning inner ring increased in the positive (+) direction), but in this case, there was a problem in that the straight safety was deteriorated.

즉, 상기와 같이 직진 안전성과 선회력은 서로 상충되므로 양자를 동시에 만족하는 현가장치를 만드는 것은 곤란하였다.That is, as described above, since the linear safety and the turning force conflict with each other, it is difficult to make a suspension device that satisfies both simultaneously.

이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 직진 안전성과 선회력이 동시에 향상될 수 있도록 된 자동차의 현가장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to provide a suspension device for a vehicle that can be improved at the same time straight safety and turning power.

도 1은 종래 현가장치의 일례 및 그 선회 상태를 도시한 도면,1 is a view showing an example of a conventional suspension and its turning state,

도 2는 도 1의 변형 실시예 및 그 선회 상태를 도시한 도면,2 is a view showing a modified embodiment of Figure 1 and its turning state,

도 3은 본 발명에 따른 현가장치의 구성도 및 그 선회 상태를 도시한 도면,3 is a diagram showing the configuration of the suspension according to the present invention and its turning state,

도 4는 본 발명에 트레일링암이 적용된 상태를 도시한 평면도이다.4 is a plan view illustrating a trailing arm applied to the present invention.

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

1 : 크로스멤버,2 : 하부 콘트롤아암,1: cross member, 2: lower control arm,

3 : 조향너클,4 : 스트럿,3: steering knuckle, 4: strut,

5 : 선회 외륜,6 : 브라켓,5: turning outer ring, 6: bracket,

7 : 크로스 콘트롤아암,8 : 트레일링아암,7: cross control arm, 8: trailing arm,

9 : 부시.9: bush.

상기와 같은 목적을 달성하기 위한 본 발명은, 크로스멤버에 하향 경사진 하부 콘트롤아암이 장착되고, 이 하부 콘트롤아암에 조향너클이 장착되며, 이 조향너클에 차량 중심으로 소량 편심된 스트럿이 장착되는 구조의 현가장치에 있어서, 상기 크로스멤버의 하부에 위치되어 양단이 상기 하부 콘트롤아암에 형성된 브라켓에 힌지연결되는 크로스 콘트롤아암이 설치되는 것을 특징으로 한다.The present invention for achieving the above object, the lower control arm is inclined to the cross member is mounted, a steering knuckle is mounted to the lower control arm, a small amount of eccentric struts are mounted to the steering knuckle to the center of the vehicle The suspension of the structure, characterized in that the cross control arm is located on the lower portion of the cross member, both ends are hinged to the bracket formed on the lower control arm.

따라서, 불필요한 횡력의 발생이 적어 직진 안정성이 우수할 뿐만 아니라, 선회시 선회 외륜에서는 부의 방향으로 선회 내륜에서는 정의 방향으로 캠버가 발생하여 선회력도 우수하게 된다.Therefore, the occurrence of unnecessary lateral force is not only excellent, the straight stability is excellent, the camber is generated in the positive direction in the turning inner ring in the negative direction in the turning outer ring during turning, and also excellent in turning force.

이하, 본 발명을 첨부된 예시도면을 참조하여 설명한다.Hereinafter, the present invention will be described with reference to the accompanying drawings.

도 3은 본 발명에 따른 현가장치의 구성도로서, 상기 하부 콘트롤아암(2)의 상부에 설치되는 스트럿(4)--정확히는 조향너클(3)의 상부에 설치되나 설명의 편의를 위해 이와 같이 기술한다.--은 도 1에서 설명한 타입처럼 거의 수직으로 세워진 상태로 설치된다.(정확하게는 도 2의 경우와 같이 차량의 중심쪽으로 편심되어 있으나 그 양은 미미하다.)3 is a configuration diagram of a suspension device according to the present invention, which is installed on the upper portion of the strut 4-precisely the steering knuckle 3, which is installed on the upper portion of the lower control arm 2, but for convenience of explanation. Is installed in an almost vertical position, as in the type described in FIG. 1 (exactly eccentrically toward the center of the vehicle as in the case of FIG.

따라서, 도 2의 경우에 비하여 불필요한 횡력의 발생이 감소함으로써 직진 안정성이 향상된다.Therefore, compared with the case of FIG. 2, the generation of unnecessary lateral force is reduced, thereby improving the straight stability.

또한, 상기 하부 콘트롤아암(2)은 도 2에서 설명한 타입처럼 하향 경사도가 크게 설치되고, 그 하면에는 브라켓(6)이 일체로 형성되어, 이 양측 브라켓(6)에 크로스 콘트롤아암(7)이 힌지연결된다.In addition, the lower control arm 2 has a large downward inclination, as shown in FIG. 2, and a bracket 6 is integrally formed on the lower surface of the lower control arm 2 so that the cross control arm 7 is provided on both brackets 6. The hinge is connected.

따라서, 선회주행시 관성에 의해 차체가 기울면 양쪽 바퀴는 노면에 접지되어 있는 상태이므로 크로스멤버(1)가 기우는 것에 의해 아래쪽의 크로스 콘트롤아암(7)이 선회 외륜(5)쪽의 하부 콘트롤아암(2)을 상부로 밀어올려주게 되고, 상기 스트럿(4)는 차량 중심쪽으로 약간 편심되어 있으므로 선회 외륜(5)의 캠버는 부(-)의 방향으로 축소되며, 반면 반대쪽의 선회 내륜의 경우에는 크로스 콘트롤아암(7)이 하부 콘트롤아암을 당겨줌으로써 캠버가 정(+)의 방향으로 증가하게 됨으로써 선회력이 향상된다.Therefore, when the vehicle body is inclined due to inertia during turning, both wheels are grounded on the road surface, so that the cross control member 7 at the bottom crosses the lower control arm at the side of the turning outer ring 5 due to the cross member 1 tilting. 2) is pushed upward, the strut 4 is slightly eccentric towards the center of the vehicle, so the camber of the turning outer ring 5 is reduced in the negative direction, whereas in the case of the opposite turning inner ring As the control arm 7 pulls the lower control arm, the camber increases in the positive direction, thereby improving the turning force.

한편, 상기와 같은 구조에서는 크로스 콘트롤아암(7)의 양단이 양측 하부 콘트롤아암(2)을 잡고 있기 때문에 차륜의 상하방향 거동이 불가능하게 된다. 즉, 범프(bump)나 리바운드(rebound)시의 충격흡수가 불가능하게 되므로 이를 해결하기위해서 트레일링아암 구조를 적용하는데, 상기 크로스멤버(1)에 직각방향으로 트레일링아암을 일단을 고정시키고 타단은 트레일링아암의 길이방향에 직각방향인 부시를 사용하여 차체의 또 다른 크로스멤버에 장착하면 차륜의 상하방향 이동이 가능해지며, 이와 같은 상태에서 범프나 리바운드가 발생할 때 차륜의 캠버 및 트레드는 변화하지 않으므로 우수한 직진 안정성을 확보할 수 있다.On the other hand, in the above structure, since both ends of the cross control arm 7 hold both lower control arms 2, the vertical movement of the wheel becomes impossible. That is, since the shock absorption is impossible at the time of bump or rebound, a trailing arm structure is applied to solve this problem. The trailing arm is fixed to the cross member 1 at a right angle and the other end thereof. Is mounted on another cross member of the body using a bush perpendicular to the trailing arm's longitudinal direction, and the wheel's up and down movement is possible.In this state, the camber and tread of the wheel change when bumps or rebounds occur. Because of this, excellent straight line stability can be obtained.

도 4에 도시된 바와 같이 井(정)자 프레임이 적용된 경우에는 양측 사이드멤버를 연장하여 트레일링아암(8)을 일체로 형성하고, 이 트레일링아암(8)의 단부를 직각방향의 부시(9)를 사용하여 차체의 또 다른 크로스멤버에 장착한다.(트레일링아암을 외측방향으로 경사지게 형성한 경우 사이드멤버에 장착할 수도 있다.)As shown in FIG. 4, when a square ruler is applied, both side members are extended to form a trailing arm 8 integrally, and an end of the trailing arm 8 is formed at a right angle with a bush ( 9) to the other cross member of the vehicle body. (If the trailing arm is formed to be inclined outward, it may be attached to the side member.)

이상 설명한 바와 같이 본 발명에 따르면, 차량 주행시 직진 안정성과 선회성능을 동시에 향상시킬 수 있으므로 차량의 운전성능이 향상되는 효과가 있다.As described above, according to the present invention, the driving stability of the vehicle can be improved since the straight stability and the turning performance can be improved at the same time.

Claims (2)

크로스멤버(1)에 하향 경사진 하부 콘트롤아암(2)이 장착되고, 이 하부 콘트롤아암(2)에 조향너클(3)이 장착되며, 이 조향너클(3)에 차량 중심으로 소량 편심된 스트럿(4)이 장착되는 구조의 현가장치에 있어서, 상기 크로스멤버(1)의 하부에 위치되어 양단이 상기 하부 콘트롤아암(2)에 형성된 브라켓(6)에 힌지연결되는 크로스 콘트롤아암(7)이 설치되는 것을 특징으로 하는 자동차의 현가장치.A lower control arm 2 inclined downward is mounted on the crossmember 1, and a steering knuckle 3 is mounted on the lower control arm 2, and the strut is slightly eccentric to the vehicle center. A suspension device having a structure in which (4) is mounted, wherein the cross control arm (7) positioned at the lower portion of the cross member (1) and hinged to the bracket (6) formed at the lower control arm (2) is provided. Suspension of a vehicle, characterized in that the installation. 제 1항에 있어서, 상기 크로스멤버(1)에 직각방향으로 트레일링아암(8)의 일단이 고정되고 타단은 이 트레일링아암(8)의 길이방향에 직각방향인 부시(9)를 매개로 차체의 또 다른 크로스멤버에 장착되는 구조로 이루어진 것을 특징으로 하는 자동차의 현가장치.2. The trailing arm (8) according to claim 1, wherein one end of the trailing arm (8) is fixed to the cross member (1) at right angles, and the other end is formed through a bush (9) perpendicular to the longitudinal direction of the trailing arm (8). Suspension device for a vehicle, characterized in that the structure is mounted to another cross member of the vehicle body.
KR10-2002-0019122A 2002-04-09 2002-04-09 a suspension system of vehicles KR100471826B1 (en)

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KR20040003282A (en) * 2002-07-02 2004-01-13 현대자동차주식회사 The suspension device of the car

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JPH04215517A (en) * 1990-12-10 1992-08-06 Mazda Motor Corp Stabilizer device of vehicle
KR19980029517A (en) * 1996-10-26 1998-07-25 김영귀 Vehicle rear stabilizer structure
KR19980083558A (en) * 1997-05-16 1998-12-05 홍종만 Stabilizer adjuster of car
KR19990047759A (en) * 1997-12-05 1999-07-05 오상수 Independent rear wheel suspension using elastic link
KR20020096716A (en) * 2001-06-21 2002-12-31 기아자동차주식회사 Double wishbone type suspension

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040003282A (en) * 2002-07-02 2004-01-13 현대자동차주식회사 The suspension device of the car

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