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KR20110023269A - Coupled torsion beam axle in vehicle - Google Patents

Coupled torsion beam axle in vehicle Download PDF

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Publication number
KR20110023269A
KR20110023269A KR1020090081037A KR20090081037A KR20110023269A KR 20110023269 A KR20110023269 A KR 20110023269A KR 1020090081037 A KR1020090081037 A KR 1020090081037A KR 20090081037 A KR20090081037 A KR 20090081037A KR 20110023269 A KR20110023269 A KR 20110023269A
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KR
South Korea
Prior art keywords
torsion beam
coupled
trailing arm
reinforcing member
vehicle
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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KR1020090081037A
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Korean (ko)
Inventor
최민석
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현대모비스 주식회사
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Priority to KR1020090081037A priority Critical patent/KR20110023269A/en
Publication of KR20110023269A publication Critical patent/KR20110023269A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/18—Resilient suspensions characterised by arrangement, location or kind of springs having torsion-bar springs only
    • 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
    • B60G21/051—Trailing arm twist beam axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/02—Attaching arms to sprung part of vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/20—Semi-rigid axle suspensions
    • B60G2200/21—Trailing arms connected by a torsional beam, i.e. twist-beam axles

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

Abstract

본 발명은 휠에서 들어온 복합 하중을 견고하게 지지하여 응력집중으로 토션빔이 파손되는 것을 방지하도록 하면서도, 트레일링암과 토션빔 연결부의 응력을 효과적으로 분산할 수 있도록 하여 상기 연결부의 파손을 방지할 수 있도록 함으로써, 내구성을 크게 향상시킬 수 있도록 한다.The present invention can firmly support the composite load from the wheel to prevent the torsion beam from being broken by stress concentration, while effectively dispersing the stress of the trailing arm and the torsion beam connecting portion to prevent the breakage of the connecting portion By doing so, durability can be greatly improved.

Description

차량의 커플드 토션빔 액슬{Coupled Torsion Beam Axle of Vehicle}Coupled Torsion Beam Axle of Vehicle

본 발명은 차량의 리어서스펜션 시스템에 사용되는 차량의 커플드 토션빔 액슬에 관한 것으로서, 보다 상세하게는 커플드 토션빔 액슬의 내구성을 향상시키기 위한 구조적 보강에 관한 기술이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupled torsion beam axle of a vehicle for use in a suspension system of a vehicle, and more particularly, to a structural reinforcement for improving durability of a coupled torsion beam axle.

리어서스펜션 시스템에 사용되는 커플드 토션빔 액슬(CTBA: COUPLED TORSION BEAM AXLE)은 양쪽의 트레일링암에 허브베어링을 통해 휠을 지지하고, 상기 양쪽 트레일링암에 사이에 연결되는 토션빔 또는 토션바의 TORSIONAL특성에 의해 차량의 롤을 조절하는 현가장치의 한 타입으로 구조가 단순하고 경량화 할 수 있어 준중형급 이하 차량에서 널리 사용되는 서스펜션 장치이다. COUPLED TORSION BEAM AXLE (CTBA) used in the rear suspension system supports the wheels through hub bearings on both trailing arms, and the torsional beams of the torsion bar or torsion bar connected between the trailing arms. It is a type of suspension device that adjusts the roll of a vehicle by its characteristics. It is a suspension device that is widely used in sub-medium class cars because its structure is simple and lightweight.

이러한 타입의 커플드 토션빔 액슬은 크게 토션빔의 형상에 따라 V-BEAM 타입과 TUBULAR TYPE으로 나누어진다. 이중 V-BEAM 타입의 경우 롤특성 및 강성을 결정하기 위해 토션빔을 지지하는 토션빔 부시, 그 외 토션빔을 지지하는 각종 보강부재로 구성된다. This type of coupled torsion beam axle is largely divided into V-BEAM type and TUBULAR TYPE according to the shape of the torsion beam. Double V-BEAM type consists of torsion beam bush supporting torsion beam to determine roll characteristics and rigidity, and various reinforcement members supporting torsion beam.

이 중 도 1에 도시된 바와 같이, 토션빔(500)의 외측에서 토션빔(500)과 트레일링암(502) 사이를 지지하는 보강부재(504)는, 타이어를 지지하는 휠을 통해 노면으로부터 받는 상하/전후/좌우의 복합 하중에 의한 토션빔(500)과 트레일링암(502) 연결부의 파손을 방지하기 위한 것으로서, 커플드 토션빔 액슬의 내구성을 결정하는 중요한 부재이다.As shown in FIG. 1, the reinforcing member 504 supporting the torsion beam 500 and the trailing arm 502 outside the torsion beam 500 is received from the road surface through a wheel supporting the tire. It is an important member to determine the durability of the coupled torsion beam axle to prevent the damage of the connection portion of the torsion beam 500 and the trailing arm 502 due to the combined load of the up, down, front, left and right.

트레일링암(502)과 토션빔(500) 연결부의 응력을 분산하기 위해 장착된 상기의 보강부재(504)는, 구조상 도 2에 예시한 바와 같이 보강부재(504) 끝단에서 응력집중이 발생하며 용접부 크랙에 이어 토션빔 자체 파단에 이르기도 한다. The reinforcing member 504 mounted to distribute the stress of the trailing arm 502 and the torsion beam 500 is structurally stressed at the end of the reinforcing member 504 as illustrated in FIG. 2. Following cracking, the torsion beam itself may break.

V-BEAM 형상의 커플드 토션빔 액슬의 내구성 향상을 위해서는 이 보강부재의 구조 및 형상을 적절히 결정하는 것이 설계상의 중요한 인자가 되고 있다. 상기 보강부재의 경우 강성이 너무 클 경우 휠에서 들어온 복합 하중에 의해 상기와 같이 끝단부 응력집중으로 토션빔이 파손되며, 강성이 약할 경우 트레일링암과 토션빔 연결부 응력을 분산하는 역할을 적절히 수행하지 못해 연결부가 파손되는 문제를 가지고 있다.In order to improve the durability of the V-BEAM-shaped coupled torsion beam axle, it is important to determine the structure and shape of the reinforcing member properly. In the case of the reinforcement member, when the rigidity is too large, the torsion beam is damaged by the stress concentration at the end by the combined load from the wheel, and when the rigidity is weak, the torsion beam and the torsion beam connection stress are not properly distributed. There is a problem that the connection is broken.

본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 휠에서 들어온 복합 하중을 견고하게 지지하여 응력집중으로 토션빔이 파손되는 것을 방지하도록 하면서도, 트레일링암과 토션빔 연결부의 응력을 효과적으로 분산할 수 있도록 하여 상기 연결부의 파손을 방지할 수 있도록 함으로써, 내구성을 크게 향상시킬 수 있도록 한 차량의 커플드 토션빔 액슬을 제공함에 그 목적이 있다.The present invention has been made to solve the problems described above, while firmly supporting the composite load from the wheel to prevent the torsion beam breakage due to stress concentration, while effectively dispersing the stress of the trailing arm and the torsion beam connection It is an object of the present invention to provide a coupled torsion beam axle of a vehicle capable of greatly improving durability by making it possible to prevent breakage of the connecting portion.

상기와 같은 목적을 이루기 위한 본 발명 차량의 커플드 토션빔 액슬은 Coupled torsion beam axle of the present invention for achieving the above object is

토션빔과;Torsion beams;

상기 토션빔의 양단에 각각 결합된 트레일링암과;Trailing arms respectively coupled to both ends of the torsion beam;

일단이 상기 트레일링암에 결합되고, 타단이 상기 토션빔의 길이방향을 따라 길게 연장되어 형성되며, 상기 토션빔에 인접한 상기 양단 사이의 변은 상기 토션빔의 길이방향을 따라 전체 구간에서 상기 토션빔과 일체로 결합되되, 상기 양단 사이에는 굴곡부가 형성된 보강부재를 포함하여 구성된 것을 특징으로 한다.One end is coupled to the trailing arm, the other end is formed to extend in the longitudinal direction of the torsion beam, the side between the two ends adjacent to the torsion beam is the torsion beam in the entire section along the longitudinal direction of the torsion beam Is integrally coupled with, characterized in that comprising a reinforcing member formed bent portion between the both ends.

본 발명은 휠에서 들어온 복합 하중을 견고하게 지지하여 응력집중으로 토션빔이 파손되는 것을 방지하도록 하면서도, 트레일링암과 토션빔 연결부의 응력을 효과적으로 분산할 수 있도록 하여 상기 연결부의 파손을 방지할 수 있도록 함으로써, 내구성을 크게 향상시킬 수 있도록 한다.The present invention can firmly support the composite load from the wheel to prevent the torsion beam from being broken by stress concentration, while effectively dispersing the stress of the trailing arm and the torsion beam connecting portion to prevent the breakage of the connecting portion By doing so, durability can be greatly improved.

도 3을 참조하면, 본 발명 실시예의 커플드 토션빔 액슬은 토션빔(1)과; 상기 토션빔의 양단에 각각 결합된 트레일링암(3)과; 일단이 상기 트레일링암에 결합되고, 타단이 상기 토션빔의 길이방향을 따라 길게 연장되어 형성되며, 상기 토션빔에 인접한 상기 양단 사이의 변은 상기 토션빔의 길이방향을 따라 전체 구간에서 상기 토션빔과 일체로 결합되되, 상기 양단 사이에는 굴곡부(5)가 형성된 보강부재(7)를 포함하여 구성된다.3, the coupled torsion beam axle of the embodiment of the present invention comprises a torsion beam 1; Trailing arms 3 respectively coupled to both ends of the torsion beam; One end is coupled to the trailing arm, the other end is formed to extend in the longitudinal direction of the torsion beam, the side between the two ends adjacent to the torsion beam is the torsion beam in the entire section along the longitudinal direction of the torsion beam It is integrally coupled with the both ends, and comprises a reinforcing member (7) formed between the bent portion (5).

즉, 종래에는 보강부재가 단순한 평판형으로 형성되었던 것에 비하여, 본 발명에서는 상기 보강부재(7)에 굴곡부(5)가 형성된 상태로 상기 토션빔(1)에 용접된 것이다.That is, in the present invention, the reinforcing member is welded to the torsion beam 1 in a state where the bent portion 5 is formed in the reinforcing member 7 as compared with the conventional flat reinforcing member.

상기 보강부재(7)는 상기 트레일링암(3)에 결합된 일단으로부터 타단을 향하여 점차 폭이 좁아지는 삼각형 형상으로 형성되고, 상기 굴곡부(5)는 상기 보강부재(7)가 상기 트레일링암(3)에 결합된 일단으로부터 타단을 향해 하측으로 경사지게 형성되다가 상측을 향해 연장되는 구조로 형성된다.The reinforcing member 7 is formed in a triangular shape gradually narrowing from one end coupled to the trailing arm 3 toward the other end, the bent portion 5 is the reinforcing member 7 is the trailing arm (3) ) Is formed to be inclined downward toward the other end from the one end coupled to the other end is formed in a structure extending toward the upper side.

본 실시예에서, 상기 보강부재의 굴곡부(5)는 상기 트레일링암(3)에 결합된 일단으로부터 상기 트레일링암(3)에 결합된 일단과 타단 사이의 전체길이의 2/3 이상이 되는 지점에 형성되어 있다.In the present embodiment, the bent portion 5 of the reinforcing member is at a point that is at least two thirds of the total length between one end and the other end coupled to the trailing arm 3 from one end coupled to the trailing arm 3. Formed.

상기 보강부재(7)는 평판의 형태로 형성되고, 상기 굴곡부(5)는 트레일링암의 길이방향을 따라 관측하였을 때, V 자형 단면을 보이도록 형성된 구조이다.The reinforcing member 7 is formed in the form of a flat plate, the bent portion 5 is a structure formed to show a V-shaped cross section when observed along the longitudinal direction of the trailing arm.

즉, 상기 보강부재(7)의 폭이 좁아지는 타단쪽, 즉 토션빔의 중심쪽 일부분이 상측으로 절곡되어 굴곡부(5)를 형성하는 구조인 것이다.That is, the other end portion of which the width of the reinforcing member 7 is narrowed, that is, a portion of the central side of the torsion beam is bent upward to form the bent portion 5.

상기한 바와 같은 굴곡부(5)를 포함하는 구조의 보강부재(7)를 채용하면, 휠로부터상기 트레일링암(3)을 통해 제공되는 복합하중과 상기 토션빔(1)에서 발생되는 변형에 대하여, 상기 보강부재(7)가 견고한 지지상태를 확보하여 상기 토션빔(1)과 트레일링암(3)의 결합상태를 안정되게 유지함은 물론, 상기 굴곡부(5)를 통해 응력의 집중을 방지하고 응력을 고루 분산하는 효과를 발생시켜 토션빔(1)의 파손 및 토션빔(1)과 트레일링암(3) 연결부의 파손 등을 더욱 효과적으로 방지할 수 있도록 한다.By employing the reinforcing member 7 having a structure including the bent portion 5 as described above, with respect to the complex load provided through the trailing arm 3 from the wheel and the deformation generated in the torsion beam 1, The reinforcing member 7 secures a solid support state to maintain a stable state of coupling between the torsion beam 1 and the trailing arm 3, as well as prevents concentration of stress through the bent portion 5 and reduces stress. By generating an evenly distributed effect, it is possible to more effectively prevent the breakage of the torsion beam 1 and the breakage of the connection of the torsion beam 1 and the trailing arm 3.

도 4는 동일한 재질과 두께의 보강부재를 종래와 같이 장착한 경우와, 본 발명에 따라 장착한 경우의 내구수명을 비교한 것으로서, 보강부재와 토션빔 사이와, 보강부재 자체 및 보강부재와 트레일링암 사이의 내구수명을 각각 비교하여 수치화 하여 제시하였다.Figure 4 is a comparison of the durability life of the case of mounting the reinforcing member of the same material and thickness as in the prior art, and according to the present invention, between the reinforcing member and the torsion beam, the reinforcing member itself and the reinforcing member and the trail The endurance life between the ring arms was compared and numerically presented.

상기 제시된 결과로부터 알 수 있듯이, 본 발명에 따른 차량의 커플드 토션빔 액슬에서는 상기 비교된 각 부위의 내구수명이 종래기술에 비하여 적게는 12%에서 많게는 500%까지 현저하게 향상됨을 알 수 있다.As can be seen from the results presented above, it can be seen that in the coupled torsion beam axle of the vehicle according to the present invention, the endurance life of each part compared is significantly improved from as low as 12% to as much as 500% compared with the prior art.

도 1은 종래기술에 의한 차량의 커플드 토션빔 액슬을 도시한 도면,1 illustrates a coupled torsion beam axle of a vehicle according to the prior art;

도 2는 종래기술의 문제점을 설명한 도면,2 is a view explaining a problem of the prior art,

도 3은 본 발명에 따른 차량의 커플드 토션빔 액슬을 도시한 도면,3 shows a coupled torsion beam axle of a vehicle according to the invention,

도 4는 종래기술과 본 발명을 비교한 해석결과를 설명한 도면이다.4 is a view explaining an analysis result comparing the prior art and the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1; 토션빔 3; 트레일링암One; Torsion beam 3; Trailing arm

5; 굴곡부 7; 보강부재5; Bend 7; Reinforcement member

Claims (4)

토션빔과;Torsion beams; 상기 토션빔의 양단에 각각 결합된 트레일링암과;Trailing arms respectively coupled to both ends of the torsion beam; 일단이 상기 트레일링암에 결합되고, 타단이 상기 토션빔의 길이방향을 따라 길게 연장되어 형성되며, 상기 토션빔에 인접한 상기 양단 사이의 변은 상기 토션빔의 길이방향을 따라 전체 구간에서 상기 토션빔과 일체로 결합되되, 상기 양단 사이에는 굴곡부가 형성된 보강부재;One end is coupled to the trailing arm, the other end is formed to extend in the longitudinal direction of the torsion beam, the side between the two ends adjacent to the torsion beam is the torsion beam in the entire section along the longitudinal direction of the torsion beam It is integrally coupled with the reinforcement member is formed between the both ends of the bent portion; 를 포함하여 구성된 것을 특징으로 하는 차량의 커플드 토션빔 액슬.Coupled torsion beam axle of a vehicle comprising a. 청구항 1에 있어서,The method according to claim 1, 상기 보강부재는 상기 트레일링암에 결합된 일단으로부터 타단을 향하여 점차 폭이 좁아지는 삼각형 형상으로 형성되고;The reinforcing member is formed in a triangular shape gradually narrowing toward the other end from one end coupled to the trailing arm; 상기 굴곡부는 상기 보강부재가 상기 트레일링암에 결합된 일단으로부터 타단을 향해 하측으로 경사지게 형성되다가 상측을 향해 연장됨으로써 형성되는 것The bent portion is formed by being inclined downward toward the other end from the one end of the reinforcing member coupled to the trailing arm is formed by extending toward the upper side 을 특징으로 하는 차량의 커플드 토션빔 액슬.Coupled torsion beam axle of the vehicle, characterized in that. 청구항 2에 있어서,The method according to claim 2, 상기 보강부재의 굴곡부는 상기 트레일링암에 결합된 일단으로부터 상기 트레일링암에 결합된 일단과 타단 사이의 전체길이의 2/3 이상이 되는 지점에 형성되는 것The bent portion of the reinforcing member is formed at a point that is at least two-thirds of the total length between one end and the other end coupled to the trailing arm from one end coupled to the trailing arm 을 특징으로 하는 차량의 커플드 토션빔 액슬.Coupled torsion beam axle of the vehicle, characterized in that. 청구항 3에 있어서,The method of claim 3, 상기 보강부재는 평판의 형태로 형성되고;The reinforcing member is formed in the form of a flat plate; 상기 굴곡부는 트레일링암의 길이방향을 따라 관측하였을 때, V 자형 단면을 보이도록 형성되는 것The bent portion is formed to show a V-shaped cross section when observed along the longitudinal direction of the trailing arm 을 특징으로 하는 차량의 커플드 토션빔 액슬. Coupled torsion beam axle of the vehicle, characterized in that.
KR1020090081037A 2009-08-31 2009-08-31 Coupled torsion beam axle in vehicle Withdrawn KR20110023269A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8857835B2 (en) 2012-11-02 2014-10-14 Sungwoo Hitech Co., Ltd. Rear suspension system of coupled torsion beam axle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8857835B2 (en) 2012-11-02 2014-10-14 Sungwoo Hitech Co., Ltd. Rear suspension system of coupled torsion beam axle

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