KR100313795B1 - Rear suspension device of torsion beam shaft type for vehicle - Google Patents

Rear suspension device of torsion beam shaft type for vehicle Download PDF

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Publication number
KR100313795B1
KR100313795B1 KR1019970080051A KR19970080051A KR100313795B1 KR 100313795 B1 KR100313795 B1 KR 100313795B1 KR 1019970080051 A KR1019970080051 A KR 1019970080051A KR 19970080051 A KR19970080051 A KR 19970080051A KR 100313795 B1 KR100313795 B1 KR 100313795B1
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KR
South Korea
Prior art keywords
torsion beam
rear suspension
vehicle
connecting arm
toe
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KR1019970080051A
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Korean (ko)
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KR19990059837A (en
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신태학
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이계안
현대자동차주식회사
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Priority to KR1019970080051A priority Critical patent/KR100313795B1/en
Publication of KR19990059837A publication Critical patent/KR19990059837A/en
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    • 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
    • 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
    • B60G2204/40—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
    • B60G2204/422—Links for mounting suspension elements
    • 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
    • B60G2800/246—Understeer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/02—Control of vehicle driving stability
    • B60Y2300/022—Stability in turns or during cornering
    • B60Y2300/0227—Stability in turns or during cornering related to under-steering
    • 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 rear suspension device of a torsion beam shaft type is provided to devise the rotation stability by inducing a weak under steer to a positive under steer. CONSTITUTION: A rear suspension device contains rotation joint potion(22), a wheel carrier(24), a connecting arm(28) and a toe control link(30). The rotation joint portion is integrally formed in both sides of a torsion beam shaft(20). The wheel carrier supports the rotation of a wheel(26) by installing in the rotation joint portion to be rotatable. The connecting arm is installed in the rotation joint portion. The toe control link is installed in the connecting arm to guide a toe-in. Thereby, the rotation stability is secured and the difference of rotation characteristics between left wheels and right wheels is overcome.

Description

자동차의 토션 빔 축형 리어 현가장치Torsion beam axial rear suspension of car

본 발명은 자동차의 토션 빔 축형 리어 현가장치에 관한 것으로, 보다 상세하게는 선회시 외륜의 토우-인성이 미약함에 따른 약 언더 스티어를 적극적인 언더 스티어로 유도하여 선회 안정성을 도모하는 자동차의 토션 빔축형 리어 현가장치에 관한 것이다.The present invention relates to a torsion beam axial rear suspension of an automobile. More specifically, a torsion beam axial type of a vehicle which induces weak understeer as an active understeer due to weak toe-toughness of the outer ring during turning and promotes turning stability. It relates to a rear suspension.

자동차에 있어서의 현가장치는 차체와 차륜 사이에 존재하면서 이 2개의 강체를 하나 혹은 다수의 컨트롤 아암으로 연결하여 상하 방향으로는 스프링과 쇽 업소오버에 의하여 지지되고, 기타방향으로 높은 강성과 유연성을 적절히 조화시킴으로써, 차체와 차륜 사이의 상대운동을 기계적으로 적절히 조화시켜 주행중 노면으로 부터 받는 진동과 충격을 흡수하여 승차감과 선회 안정성을 향상시키는 장치이다.Suspensions in automobiles exist between the body and the wheels and are connected by one or more control arms, supported by springs and shock absorbers in the up and down directions, and high rigidity and flexibility in the other directions. By appropriately harmonizing, the relative motion between the vehicle body and the wheels is mechanically balanced to absorb vibrations and shocks received from the road surface while driving, thereby improving ride comfort and turning stability.

이러한 현가장치는 노면으로부터의 입력에 대한 여러 부문의 성능을 만족시키기 위하여 다음의 3가지 조건이 요구되고 있다.In order to satisfy the performance of various sectors for the input from the road surface, the following three conditions are required.

첫째, 조정 안정성을 위하여 타이어는 노면에 대하여 이상적인 자세를 유지케 하여 노면에 대한 그립(grip)력을 극대화하고, 차체는 나름대로 최상의 자세를 유지하여 목적하는 차량 운동상태를 가능케 하여야 하며, 특히 어떠한 상태에서도 항상 다음 동작을 얻을 수 있는 순간력을 지님과 동시에 운전자의 의도하는 방향 및 순간 외에는 외부 입력에 의한 어떠한 거동도 허용하면 안 된다.First, for the stability of adjustment, the tire should maintain the ideal posture on the road surface to maximize the grip force on the road, and the body should maintain the best posture in its own way to enable the desired vehicle movement state. In addition, it must not have any momentary force to get the next motion at all times and at the same time allow any action by external input except the driver's intended direction and moment.

둘째, 안락감을 위하여 어떠한 충격도 흡수할 수 있도록 하여 차내에 있는 탑승자들로 하여금 불쾌감을 느끼지 못하도록 하여야 한다.Second, it should be possible to absorb any shock for comfort so that passengers in the car do not feel uncomfortable.

셋째, 충돌시 이의 충돌 에너지의 흡수에 기여토록 하여 충돌 안전성을 증대시킬 수 있도록 하여야 한다.Third, it is necessary to contribute to the absorption of the collision energy in the collision to increase the collision safety.

상기와 같은 현가장치의 요구 조건에 있어서, 도3은 종래의 기술로 토션빔 축형 리어 현가장치(2)로, 첫째의 조건에 부응하고 있지만 선회시 후륜의 외측륜(4)이 토션빔축(6)의 특성상 매우 약한 언더 스티어 또는 오버스티어 경향을 띠게 된다.3 is a torsion beam axial rear suspension 2 according to the conventional technique, which meets the first condition, but the outer wheel 4 of the rear wheel is the torsion beam shaft 6 when turning. ) Tends to be very weak understeer or oversteer.

이러한 토션 빔 축형 리어 현가장치(2)는 좌회전과 우회전시 각 경우에 따라 래터럴 로드(8)의 장착 위치의 영향(래터럴 로드 경사각)으로 롤스티어 량이 좌,우 선회시 틀려지게 된다.Such a torsion beam axial rear suspension 2 is rolled in the left and right turns due to the influence of the mounting position of the lateral rod 8 (lateral rod inclination angle) in the left and right turns.

상기한 종래의 기술은 외측륜이 언더 스티어 또는 오버스티어 경향 때 후륜조타 영향 때문에 언더 스티어가 증대하는 어려움이 있다.The prior art described above has the difficulty of increasing the understeer due to the rear wheel steering effect when the outer ring tends to understeer or oversteer.

또, 좌회전과 우회전시 래터럴 로드의 장착 위치가 한쪽으로 치우쳐 있으며, 차체에 연결되는 래터럴 로드(lateral rod)가 경사져 연결되고 있어 롤 스티어량이 좌우 선회시 틀려지게 되는 점이 있다.In addition, when the left and right turns the mounting position of the lateral rod is biased to one side, the lateral rod (lateral rod) connected to the vehicle body is inclined and connected, there is a point that the roll steer amount is incorrect when turning left and right.

본 발명은 상기한 바와 같은 종래의 문제점을 해소하기 위하여 창출된 것으로, 본 발명의 목적은, 선회시 외륜의 약 토우-인성에 따른 약 언더 스티어를 적극적인 언더 스티어로 유도하여 선회 안정성을 도모하는 자동차의 토션 빔축형 리어 현가장치를 제공하는데 있다.The present invention was created to solve the conventional problems as described above, and an object of the present invention is to drive a weak understeer according to the weak toe-toughness of the outer ring during the turn to aggressive understeer to promote turning stability To provide a torsion beam axis rear suspension of the.

도 1은 본 발명에 따른 토션 빔 축형 리어 현가장치를 도시한 도면.1 shows a torsion beam axial rear suspension in accordance with the present invention;

도 2는 본 발명에 따른 리어 현가장치의 작동 상태를 도시한 도면.2 is a view showing an operating state of the rear suspension according to the present invention.

도 3은 종래 기술에 따른 토션 빔축형 리어 현가장치를 도시한 도면.Figure 3 shows a torsion beamshaft rear suspension according to the prior art.

상기한 바와 같은 목적을 실현하기 위한 본 발명의 자동차의 토션 빔축형 리어 현가장치는, 자동차의 토션 빔 축형 리어 현가장치에 있어서, 상기 토션빔 축의 양단에 일체로 형성 설치한 회전 조인트부와; 상기 회전 조인트부에 회전 가능하게 설치되어 차륜의 회전을 지지하는 휠 캐리어와; 상기 회전 조인트부와 그 일단이 설치되는 연결아암과; 선회시 토우 인으로 유도하게 상기 연결아암의 타단에 설치되는 토우 조정 링크; 를 포함하는 것을 특징으로 한다.A torsion beam axis rear suspension of an automobile according to the present invention for realizing the above object comprises: a torsion beam axis rear suspension of an automobile, comprising: a rotary joint part integrally formed at both ends of the torsion beam shaft; A wheel carrier rotatably installed on the rotary joint part to support rotation of the wheel; A connecting arm on which the rotary joint part and one end thereof are installed; A tow adjustment link installed at the other end of the connecting arm to guide the toe-in during turning; Characterized in that it comprises a.

이하, 본 발명의 바람직한 실시예를 첨부된 도면에 의하여 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 토션 빔 축형 리어 현가장치를 도시한 도면으로, 리어 현가장치(21) 토션 빔 축형(20)의 양단에 연결수단인 회전 조인트부(22)를 일체로 설치하고 있으며, 이 회전 조인트부(22)의 상,하에 회전 가능하게 지지수단인휠 캐리어(24)를 설치하여 차륜(26)의 회전을 지지하게 하고 있다.1 is a view showing a torsion beam axial rear suspension according to the present invention, the rear suspension 21, the torsion beam shaft 20 is provided with a rotary joint 22 which is a connecting means integrally at both ends, Wheel carriers 24, which are supporting means, are rotatably provided above and below the rotary joint portion 22 so as to support rotation of the wheels 26. As shown in FIG.

상기 회전 조인트부(22)에 연결아암(28)의 일단을 설치하여 선회시 토우-인으로 유도하게 연결아암(28)의 타단에 토우 조정수단인 토우 조정 링크(30)를 차체에 설치하여 이루어지고 있다.The tow adjustment link 30, which is a tow adjustment means, is installed at the other end of the connecting arm 28 so as to guide the tow-in during turning by installing one end of the connecting arm 28 to the rotary joint 22. ought.

상기 회전 조인트부(22)는 토션 빔(20)의 양단에 용접 등의 방법에 의해 수직으로 설치되고 있다.The rotary joint portion 22 is vertically provided at both ends of the torsion beam 20 by a welding method or the like.

회전 조인트부(22)의 상,하에 휠 캐리어(24)는 한지축(32)으로 설치되어 토우-인 조정이 가능하게 회전하고 있다.The wheel carriers 24 are provided on the upper and lower sides of the rotary joint portion 22 by the Korean paper shaft 32 and are rotated to allow toe-in adjustment.

그리고 도 1에 도시된 바와 같이, 상기 회전 조인트부(22)에는 차량의 전진 방향측으로 연장된 연결아암(28)을 상측에 일체로 형성하고, 그 타단에는 연결부(34)를 형성하고 있다.As shown in FIG. 1, the rotary joint part 22 is integrally formed with a connecting arm 28 extending upward in the forward direction of the vehicle, and a connecting part 34 is formed at the other end thereof.

이러한 연결아암(28)에는 힌지 연결되어 차체에 부시(36)를 개재 후, 설치되는 토우 조정 링크(30)를 설치하고 있다.The connecting arm 28 is provided with a tow adjustment link 30 which is hinged and installed after the bush 36 is interposed in the vehicle body.

이와 같이 구성된 본 발명에 따른 토션 빔 축형 리어 현가장치(21)의 작동을 설명하면, 도 2에 도시한 바와 같이, 좌 선회시 선회 외륜격인 우측륜(26)은 차체와의 이격 거리가 좁혀지는 범프(bump)를 하고, 내륜격인 좌측륜(38)은 차체와의 이격 거리가 벌어지는 리바운드(rebound)를 하게 된다.Referring to the operation of the torsion beam axial rear suspension device 21 according to the present invention configured as described above, as shown in FIG. The bump is left, and the left wheel 38, which is an inner ring space, is rebounded so that a distance from the vehicle body increases.

이때, 선회 안전성 확보 측면에서 선회 외륜은 토우 인(toe-in)성향을 띄어야 하는데, 상기 토우 조정 링크(30)는 차체측 회전 조인트부(22)와 휠 캐리어(24)를 중심으로 회전하여 회전 가능하게 연결된 우측의 연결아암(28)을 차량의 내측으로 당겨 결과적으로 우측륜(26)을 토우 인하게 한다.At this time, the turning outer ring should have a toe-in tendency in terms of ensuring the turning safety, and the towing adjusting link 30 is rotated about the body-side rotating joint part 22 and the wheel carrier 24. Pulling the connecting arm 28 on the right side which is rotatably connected to the inside of the vehicle results in toe-in the right wheel 26.

따라서 우측 토우 조정수단인 토우 조정 링크(30)는 토션 빔 축(20)의 비틀림에 따라 지지수단인 휠 캐리어(24)에 연결된 연결아암(28)을 당기는 결과를 가져와 우측륜(26)은 토-인의 상태로 유도하므로서 선희 안정성을 도모하게 된다.Accordingly, the toe adjustment link 30, which is a right toe adjustment means, results in pulling the connecting arm 28 connected to the wheel carrier 24, which is a support means, according to the torsion of the torsion beam shaft 20. -It leads to the state of phosphorus, and aims at stability of sunhee.

상술한 바와 같이 본 발명은, 토션 빔 축에 회전 가능한 휠 캐리어와 토우 조정수단이 토우 조정 링크의 설치로 선회시 후륜의 적극적인 언더 스티어가 가능하게 되어 토-인 경향을 도모하게 됨에 따라 선회 안정성을 확보하고, 좌우륜의 선회 특성 차이를 극복하게 되는 효과가 있다.As described above, the present invention, the wheel carrier and the toe adjustment means rotatable on the torsion beam axis, by the installation of the toe adjustment link to enable the active understeering of the rear wheels when turning, to achieve a toe-in tendency to improve the turning stability There is an effect to secure, and overcome the difference in the turning characteristics of the left and right wheels.

Claims (4)

자동차의 토션 빔 축형 리어 현가장치에 있어서,In a torsion beam axial rear suspension of an automobile, 상기 토션빔 축의 양단에 일체로 형성 설치한 회전 조인트부와;A rotary joint part integrally formed at both ends of the torsion beam shaft; 상기 회전 조인트부에 회전 가능하게 설치되어 차륜의 회전을 지지하는 휠 캐리어와;A wheel carrier rotatably installed on the rotary joint part to support rotation of the wheel; 상기 회전 조인트부에 그 일단이 설치되는 연결아암과;A connecting arm whose one end is installed on the rotary joint part; 선회시 토우 인으로 유도하게 상기 연결아암의 타단에 설치되는 토우 조정링크;를 포함하는 것을 특징으로 하는 자동차의 토션 빔축형 리어 현가장치.A torsion beam-shaft rear suspension of a vehicle, comprising: a tow adjustment link installed at the other end of the connecting arm to guide the toe-in when turning. 청구항 1에 있어서,The method according to claim 1, 상기 회전 조인트부는 토션 빔축의 양단에 선회시 비틀림 작용시 상기 휠 캐리어의 토우-인 상태로 회전이 가능하게 수직 상태로 설치되어 이루어지는 자동차의 토션 빔 축형 리어 현가장치.The torsion beam axial rear suspension of the vehicle, wherein the rotatable joint part is installed in a vertical state to be rotatable in the toe-in state of the wheel carrier when the torsional action is caused when the both ends of the torsion beam axis are turned. 청구항 1에 있어서,The method according to claim 1, 상기 연결아암은 상기 회전 조인트부의 상부에 차량의 전진 방향측으로 연장 형성하고, 그 타단에는 연결부를 형성하여 이루어지는 자동차의 토션 빔 축형 리어 현가장치.The connecting arm extends toward the forward direction of the vehicle on the upper portion of the rotary joint portion, and the other end of the torsion beam axial rear suspension of the vehicle formed by forming a connecting portion. 청구항 1에 있어서,The method according to claim 1, 상기 토우 조정 링크는 상기 연결아암에 힌지 연결되며, 상기 차체에 부시를 개재 후, 설치시 상기 토션 빔축에 대해서도 병렬로 설치되는 자동차의 토션 빔축형 리어 현가장치.The tow adjustment link is hinged to the connecting arm, the torsion beam axis type rear suspension of the vehicle is installed in parallel to the torsion beam axis when installed after the bushing on the vehicle body.
KR1019970080051A 1997-12-31 1997-12-31 Rear suspension device of torsion beam shaft type for vehicle KR100313795B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8505939B2 (en) 2011-09-08 2013-08-13 Hyundai Motor Company Coupled torsion beam axle

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* Cited by examiner, † Cited by third party
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KR100482082B1 (en) * 2002-06-20 2005-04-13 현대자동차주식회사 rear suspention system of minicar
KR100901598B1 (en) * 2007-12-03 2009-06-08 현대자동차주식회사 Spindle bracket for rear suspension system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8505939B2 (en) 2011-09-08 2013-08-13 Hyundai Motor Company Coupled torsion beam axle

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