KR20020055005A - Partial independence type vehicle suspension system - Google Patents

Partial independence type vehicle suspension system Download PDF

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Publication number
KR20020055005A
KR20020055005A KR1020000084340A KR20000084340A KR20020055005A KR 20020055005 A KR20020055005 A KR 20020055005A KR 1020000084340 A KR1020000084340 A KR 1020000084340A KR 20000084340 A KR20000084340 A KR 20000084340A KR 20020055005 A KR20020055005 A KR 20020055005A
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KR
South Korea
Prior art keywords
vehicle
vehicle body
wheel
links
suspension
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KR1020000084340A
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Korean (ko)
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KR100398211B1 (en
Inventor
이옥석
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이계안
현대자동차주식회사
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Priority to KR10-2000-0084340A priority Critical patent/KR100398211B1/en
Publication of KR20020055005A publication Critical patent/KR20020055005A/en
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Publication of KR100398211B1 publication Critical patent/KR100398211B1/en

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Classifications

    • 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
    • B60G3/26—Means for maintaining substantially-constant wheel camber during suspension movement ; Means for controlling the variation of the wheel position during suspension movement
    • 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
    • B60G2200/462—Toe-in/out
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • 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
    • B60G2204/416—Ball or spherical joints
    • 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
    • B60G2204/422—Links for mounting suspension elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/50—Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/05—Attitude
    • B60G2400/051—Angle
    • B60G2400/0514—Wheel angle detection
    • B60G2400/05144—Wheel toe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D17/00—Means on vehicles for adjusting camber, castor, or toe-in

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

Abstract

PURPOSE: A quasi-independent rear wheel suspension for a vehicle is provided to improve the commercial value and safety of a vehicle by keeping the ground height of the vehicle and by securing steering characteristic and safety in cornering. CONSTITUTION: A quasi-independent rear wheel suspension for a vehicle includes toe-in links(36,36') connected to wheel supporters and a vehicle body via bushes(35,35'), chamber links(37,37') connected to the wheel supporters and the vehicle body, and ground height links connected to the lower ends of the wheel supporters and having coil springs(38,38') on the upper ends. When rolling occurs, the pressure applied downward by the weight of the vehicle body is applied to the coil springs. Therefore, the lowering of the ground height is restrained. Further, the toe-in links prevent the toe-out of rear wheels.

Description

자동차용 반독립 후륜 현가장치{PARTIAL INDEPENDENCE TYPE VEHICLE SUSPENSION SYSTEM}Semi-independent rear wheel suspension for automobiles {PARTIAL INDEPENDENCE TYPE VEHICLE SUSPENSION SYSTEM}

본 발명은 자동차용 반독립 후륜 현가장치에 관한 것으로서, 더욱 상세하게는 독립형 현가장치의 선회안정성 및 조향안전성과 비독립형 현가장치의 지상고유지를 동시에 만족할 수 있도록 한 자동차용 반독립 후륜 현가장치에 관한 것이다.The present invention relates to a semi-independent rear wheel suspension for automobiles, and more particularly, to a semi-independent rear wheel suspension for automobiles to satisfy both the swing stability and steering safety of the independent suspension and the ground maintenance of the non-independent suspension.

일반적으로 자동차에 있어서 현가장치는 차축과 차체를 연결하여 주행할 때 차축이 노면에서 받는 진동이나 충격을 차체에 직접 전달되지 않도록 하여 차체나 화물의 손상을 방지하고 승차감을 좋게 하는 장치이다.In general, the suspension device in the vehicle is a device that prevents damage to the vehicle body or cargo and improves the riding comfort by preventing the axle from being directly transmitted to the vehicle body when the axle is driven from the road surface when driving by connecting the axle and the vehicle body.

이와 같은 자동차의 현가장치를 크게 분류하며 차축현가식(이하, 비독립현가식)과 독립현가식이 있는데, 대형차량의 경우에는 전후륜에 모두 비독립식 현가장치를 적용하고 있으며, 승용차의 경우 종래에는 전륜은 독립 현가장치를 채용하고 후륜을 차축식 현가장치를 채용한 예도 있으나, 최근에는 전후륜 모두 양측 구동휠이 상호 간섭됨이 없이 움직이게 하여 승차감과 안정성이 향상되는 독립현가식을 채용하고 있다.There are two types of suspensions for automobiles, axle suspension (hereinafter, non-independent suspension) and independent suspension. For large vehicles, non-independent suspensions are applied to front and rear wheels. In some cases, the front wheel adopts an independent suspension system and the rear wheel adopts an axle suspension system.However, recently, both front and rear wheels adopt an independent suspension type in which both driving wheels move without interfering with each other to improve riding comfort and stability. .

상기와 같은 자동차의 독립형 현가장치는 그 구조적인 차이에 따라 여러 종류가 있는데, 도1은 그 중 하나로 차체의 저부에 마운팅되는 서브프레임(10)과, 상기 서브프레임(10)과 구동휠(11)(11)을 연결하여 각 구동휠(11)(11)의 독립적인 상하운동을 가능케 하는 다수의 콘트롤링크(12)(12)와, 쇽 업소오버(13)(13)와 코일스프링(14)(14)의 조립체로 형성된 스트러트아암(15)(15)과, 감속기(16)와 구동휠(11)(11)을 연결하는 구동샤프트(17)로 구성되어 차체 및 구동휠에 가해지는 충격 및 진동하중을 효과적으로 흡수하게 된다.There are several types of independent suspension of the vehicle according to the structural difference, Figure 1 is one of the subframe 10 mounted on the bottom of the vehicle body, the subframe 10 and the driving wheel 11 A plurality of control links (12) (12), a shock absorber (13) (13), and a coil spring (14) to connect the (11) to enable independent up and down movement of each drive wheel (11) (11). Strut arms (15) (15) formed by the assembly of the (14), and a drive shaft (17) connecting the reduction gear (16) and the drive wheels (11) (11) to the vehicle body and the drive wheels. And the vibration load is effectively absorbed.

그러나, 상기와 같은 구조에서는 차량의 구동휠이 감속기와 독립적으로 연결되어 있어 중량이 적고 조안성이 우수하나, 차체에 적재되는 물체의 하중 및 차량의 선회시 롤현상이 발생하여 현가장치의 감속기와 도로사이의 간격(이하, 지상고)이 낮아져 불규칙한 도로에서의 주행시 차량의 진행이 만족스럽지 못한 문제점이 있었다.However, in the structure as described above, the driving wheel of the vehicle is independently connected to the reducer, so the weight is low and the stability is excellent.However, the load of the object loaded on the vehicle body and the roll phenomenon occurs during the turning of the vehicle, Since the distance between the roads (hereinafter, the ground height) is lowered, there was a problem that the progress of the vehicle was not satisfactory when driving on irregular roads.

한편, 상기와 같은 독립형 현가장치의 지상고 저하를 고려한 비독립현가장치중, 도2는 그중 하나로, 감속기(20)와 구동휠 지지체(21)(21)를 일체로 연결하는 차축하우징(22)과, 차축하우징(22)과 차체(미도시)에 연결되어 각 지지체(21)(21)의 상하운동을 가능케 하는 콘트롤링크(23)(23)와, 상기 차축하우징(22)과 차체에 연결되어 차체의 상하진동을 완충하는 쇽 업소오버(24)(24)와, 차축하우징(22) 상단에 장착되어 상부가 차체에 연결된 코일스프링(25)(25)으로 구성되어 차체 및 구동휠에 가해지는 충격 및 진동하중을 효과적으로 흡수하게 된다.On the other hand, of the non-independent suspension device in consideration of the above ground height reduction of the stand-alone suspension, Figure 2 is one of them, and the axle housing (22) and integrally connect the reducer 20 and the drive wheel support (21) 21 Is connected to the axle housing (22) and the vehicle body (not shown), the control link (23) (23) for enabling the vertical movement of each support (21) 21, and connected to the axle housing (22) and the vehicle body Shock absorbers 24 and 24 for cushioning the upper and lower vibrations of the vehicle body and coil springs 25 and 25 mounted on the upper end of the axle housing 22 and connected to the vehicle body are applied to the vehicle body and the driving wheel. It effectively absorbs shock and vibration loads.

한편, 상기와 같은 구조에서는 차체의 적재하중에 의해 가해지는 하중으로 감속기와 도로 사이의 간격이 일정하게 유지되어 험한 도로를 주파해도 지상고 저하가 발생하지 않으나, 코일스프링은 하중량 과다로 스프링의 완충력이 떨어지고, 또한, 자동차가 선회시에는 예를 들어 주행중인 차량이 우회전을 하게 되면, 차체는 원심력을 받아 차체의 하중이 선회 반대방향으로 쏠리게 되면서 기울어지는데, 즉 선회방향의 우측차체는 상방향으로 들려지는 리바운드(rebound)되고, 선회 반대방향의 좌측차체는 하방향으로 가라않는 범퍼(bumper)가 된다.On the other hand, in the structure as described above, the distance between the reducer and the road is kept constant due to the load applied by the load of the body, so even when the road is steep, the ground height does not decrease. In addition, when the vehicle is turning, for example, when the driving vehicle makes a right turn, the vehicle body is inclined under the centrifugal force while the load of the vehicle body is inclined in the opposite direction of the turning, that is, the right body in the turning direction is upward. The rebounded to the left, the vehicle body on the left side of the turn opposite direction becomes a bumper that does not go downward.

이는 선회시 차체에 롤링(rolling)이 발생되어 차량의 하중이 좌측으로 쏠림으로써, 후륜측 차측과 이에 장착된 후륜이 선회반대방향을 향하여 조향되는 액슬스티어(axle steer)현상을 유발시키게 되는 것이다.This is a rolling (rolling) is generated in the vehicle body when turning, causing the load of the vehicle to be pulled to the left, causing the axle steer phenomenon that the rear wheel side and the rear wheels mounted thereon are steered toward the reverse direction of the turn.

이와 같이, 후륜을 장착하고 있는 후륜측 차축이 선회시 선회반대방향의 후방으로 약간 선회되면, 이 후륜측 차축에 장착된 후륜의 전방이 바깥으로 벌어지는 토우-아웃(ton-out)현상이 생기면서 선회반경이 작아지는 오버스티어링현상을 유발하게되므로 선회의 안정감 상실과 핸들링 성능이 저하되는 문제점이 있었다.In this way, if the rear wheel axle on which the rear wheels are mounted is slightly turned to the rear in the reverse direction when turning, a toe-out phenomenon occurs in which the front of the rear wheels mounted on the rear wheel axles spread outwards. Since the turning radius causes oversteering phenomenon, there is a problem in that the turning stability is lost and the handling performance is deteriorated.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 독립형 현가장치의 지상고 저하방지와 함께 비독립현가장치에서 발생되던 선회안정성 및 핸들링성능을 유지할 수 있는 반독립 현가장치를 제공하는데 있다.The present invention is to solve the above problems, and to provide a semi-independent suspension that can maintain the swing stability and handling performance that occurred in the non-independent suspension with a decrease in the ground height of the stand-alone suspension.

상기와 같은 그 목적은, 좌우측 구동휠의 휠지지체에 연결되는 지상고링크와, 그의 상단에 장착되며 상단은 차체와 연결되는 코일스프링을 장착함으로서 달성된다.The above object is achieved by mounting a ground clearance link connected to the wheel support of the left and right drive wheels, and a coil spring mounted on the upper end thereof and connected to the vehicle body.

도1은 종래의 독립형 후륜 현가장치를 보인 사시도,1 is a perspective view showing a conventional stand-alone rear wheel suspension,

도2는 종래의 비독립형 후륜 현가장치를 보인 사시도,Figure 2 is a perspective view of a conventional non-independent rear wheel suspension,

도3은 본 발명의 실시예를 설명하기 위해 평면을 개략적으로 보인 구성도,Figure 3 is a schematic view showing a plan view for explaining an embodiment of the present invention,

도4는 본 발명의 실시예를 설명하기 위한 정면을 개략적으로 보인 구성도이다.Figure 4 is a schematic view showing a front view for explaining an embodiment of the present invention.

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

30 : 감속기31,31 : 조인트30: reducer 31,31: joint

32,32 : 구동휠33,33 : 휠지지체32,32: driving wheel 33,33: wheel support

34,34 : 구동샤프트35,35 : 부쉬34,34: Drive shaft 35,35: Bush

36,36 : 토이링크 37,37 : 챔버링크36,36: Toy link 37,37: Chamber link

38,38 : 코일스프링39 : 지상고링크38,38: coil spring 39: ground high link

이하, 본 발명의 실시예를 첨부도면을 의거 더욱 자세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

도3,4는 본 발명의 실시예를 개략적으로 도시한 구성도로서, 감속기(30)와, 양측에 조인트(31)(31)를 구비하여 감속기(30)와 구동휠(32)(32)의 휠지지체(33)(33)이 연결된 구동사프트(34)(34)와, 상기 휠지지체(33)(33)에 일측이 연결되고 타측은 부쉬(35)(35)를 장착하여 차체(40)에 연결된 토이링크(36)(36)와, 상기 휠지지체(33)(33)에 일측은 연결되고 타측은 차체(40)에 연결되는 챔버링크(37)(37)와, 상기 휠지지체(33)(33)의 하단부에 양측단이 연결되고 양측부 상단에 코일스프링(38)(38)이 장착된 지상고링크(39)(39)로 구성되어 있다.3 and 4 are schematic diagrams showing an embodiment of the present invention, in which a speed reducer 30 and joints 31 and 31 are provided on both sides thereof, and a speed reducer 30 and driving wheels 32 and 32 are provided. Drive shafts 34 and 34 to which the wheel supports 33 and 33 are connected, and one side is connected to the wheel supports 33 and 33, and the other side is equipped with bushes 35 and 35 to install the vehicle body 40. Toy links (36) and (36) connected to the), the chamber links (37) (37) 37, one side of which is connected to the wheel support (33) (33) and the other side is connected to the vehicle body 40, and the wheel support ( 33) The two ends are connected to the lower end of the 33, and the ground spring links 39 and 39 are mounted on both upper ends of the coil springs 38 and 38.

상기 챔버링크(37)(37)는 바퀴가 하중을 받았을 때 아래로 벌어지는 것을 방지하고 주행할 때 바퀴가 탈출하는 것을 방지하기 위해 바퀴를 바깥쪽으로 경사지도록 하는 기능을 가진 것으로, 이 때 바퀴의 중심선과 노면에 대한 수직선이 이루는 각도(A)를 캠버라고 한다.The chamber links 37 and 37 have a function of inclining the wheels outward to prevent the wheels from spreading down under load and to prevent the wheels from escaping when driving, wherein the centerline of the wheels The angle A formed by the vertical line with respect to the road surface is called a camber.

그리고, 토이링크(36)(36)는 바퀴의 앞쪽이 뒤쪽보다 좁게 하는 기능을 하는 것으로, 이런 상태를 토인이라고 하는데, 이는 상기 챔버링크(37)(37')에 의해 바퀴를 바깥쪽으로 경사지도록 하는 기능을 하게 하여 바퀴가 굴러가면 차체의 바깥쪽으로 향하는 토아우트를 현상을 방지하기 위한 것으로, 선회시나 직진시 바퀴에 적절한 토인을 주어 상기 토아우트 현상과 서로 상쇄되어 바퀴는 자동차의 진행방향과 일치한 방향으로 굴러가게 된다.And, the toy link (36, 36) is to function to make the front of the wheel narrower than the rear, this state is called toin, which is to incline the wheel to the outside by the chamber link (37, 37 '). This function is to prevent the phenomenon of toe outwards toward the outside of the car body when the wheel rolls, and to give proper toe to the wheel when turning or going straight, the offset is offset from the toe phenomenon and the wheel coincides with the traveling direction of the vehicle. Will roll in one direction.

한편, 상기 차량이 선회시 롤링의 발생시에도 상기 링크가 토인현상과 캠버 현상을 유지하기 위해 차체의 내측 밑으로 이동하여 차체가 일측이 기울어지거나 차체에 화물을 적재시 차체의 하중에 의해 아래로 받게 되는 압력은 코일스프링(38)(38)에 가해져, 종래 독립현가장치에서 발생되던 감속기와 도로사이의 지상고(B)가 현저히 저하되던 현상을 지상고링크(39)(39)가 흡수하여 지상고 저하를 막으므로서 항상 일정한 높이를 유지하게 된다.On the other hand, even when rolling occurs when the vehicle is turning, the link moves to the lower side of the vehicle body to maintain the toe phenomenon and camber phenomenon, so that one side of the vehicle is inclined or received downward by the load of the vehicle body when loading cargo on the vehicle body. The applied pressure is applied to the coil springs 38 and 38 so that the ground height links 39 and 39 absorb the phenomenon that the ground clearance B between the speed reducer and the road that has been generated in the conventional independent suspension device is significantly reduced. To keep it constant at all times.

이와 같이, 선회시 바퀴에 횡하중이 발생하여도 토인을 조절하는 토이링크와 롤링 발생시 캠버를 조절하는 챔버링크로 인해 조향특성과 선회안전성이 확보되고, 지상고의 저하는 지상고링크를 통해 지면으로부터 일정한 높이를 유지할 수 있게 된다.In this way, steering characteristics and turning safety are ensured by the toy link adjusting the toe even when the lateral load is generated during the turning and the chamber link adjusting the camber when the rolling occurs, and the ground height is lowered from the ground through the ground height link. Will be able to maintain.

이상에서와 같이, 본 발명은 종래의 비독립형과 독립형 조향장치에서 발생되 던 선회안정성과 지상고 저하를 동시에 만족할 수 있어, 제품의 상품성과 안전성 측면에서 진일보된 시스템을 갖게되는 효과가 있다.As described above, the present invention can satisfy both the swing stability and the ground clearance lowered at the same time in the conventional non-independent and independent steering device, there is an effect of having an advanced system in terms of product merchandise and safety.

Claims (1)

감속기(30)와, 양측에 조인트(31)(31)를 구비하여 감속기(30)와 구동휠(32)(32)의 휠지지체(33)(33)이 연결된 구동사프트(34)(34)로 구성된 현가장치에 있어서, 상기 휠지지체(33)(33)에 일측이 연결되고 타측은 부쉬(35)(35)를 장착하여 차체(40)에 연결된 토이링크(36)(36)와, 상기 휠지지체(33)(33)에 일측은 연결되고 타측은 차체(40)에 연결된 챔버링크(37)(37)와, 상기 휠지지체(33)(33)의 하단부에 양측단이 연결되고 양측부 상단에 코일스프링(38)(38)이 장착된 지상고링크(39)(39)를 포함하여 구성된 것을 특징으로 하는 자동차용 반독립 후륜 현가장치.Drive shafts 34 and 34 provided with a reducer 30 and joints 31 and 31 on both sides thereof are connected to the wheel supports 33 and 33 of the reducer 30 and the drive wheels 32 and 32. In the suspension device consisting of, one side is connected to the wheel support (33) 33, the other side is mounted to the bush (35) (35), toy links (36) (36) and 36 connected to the vehicle body (40), and One side is connected to the wheel supports 33 and 33 and the other side is connected to the chamber links 37 and 37 connected to the vehicle body 40, and both ends are connected to the lower ends of the wheel supports 33 and 33, and both sides are connected. Semi-independent rear wheel suspension for automobile, characterized in that it comprises a ground spring link (39) (39), the upper side of the coil spring (38) (38) is mounted.
KR10-2000-0084340A 2000-12-28 2000-12-28 Partial independence type vehicle suspension system KR100398211B1 (en)

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JPS6428012A (en) * 1987-07-21 1989-01-30 Mazda Motor Suspension device for vehicle
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JP3716610B2 (en) * 1998-03-30 2005-11-16 マツダ株式会社 Car rear wheel suspension system
JP3841133B2 (en) * 1998-07-09 2006-11-01 スズキ株式会社 Dodion suspension
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