KR20070008153A - Suspension having stiffness improving typed trailing arm in vehicle - Google Patents

Suspension having stiffness improving typed trailing arm in vehicle Download PDF

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Publication number
KR20070008153A
KR20070008153A KR1020050063175A KR20050063175A KR20070008153A KR 20070008153 A KR20070008153 A KR 20070008153A KR 1020050063175 A KR1020050063175 A KR 1020050063175A KR 20050063175 A KR20050063175 A KR 20050063175A KR 20070008153 A KR20070008153 A KR 20070008153A
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South Korea
Prior art keywords
trailing arm
vehicle
wheel suspension
rear wheel
increasing
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KR1020050063175A
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Korean (ko)
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함선균
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현대모비스 주식회사
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Priority to KR1020050063175A priority Critical patent/KR20070008153A/en
Publication of KR20070008153A publication Critical patent/KR20070008153A/en

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    • 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
    • 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
    • B60G2206/10—Constructional features of arms
    • B60G2206/122—Constructional features of arms the arm having L-shape
    • 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
    • B60G2206/80—Manufacturing procedures
    • B60G2206/81—Shaping
    • B60G2206/8103—Shaping by folding or bending
    • 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
    • B60G2800/16—Running
    • B60G2800/162—Reducing road induced vibrations

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

Abstract

A rear wheel suspension of a vehicle having a reinforced type trailing arm is provided to improve durability by increasing sectional coefficient of the trailing arm and the resistance against torsion and bending, to maintain the whole shape and characteristics of the trailing arm, and to prevent design change or working procedure complexity by increasing the sectional coefficient and strength. A rear wheel suspension of a vehicle comprises a cross member(4) installed across along the width of the vehicle; a pair of upper and lower arms(2,3) connected with both ends of the rear cross member to support lateral strength; a shock absorber(1) absorbing/buffering impact on the road; and a trailing arm(6) combined with a carrier(5) on one end and combined with a vehicle body by intermediation of a bush on the other end to support and buffer load and vibration given to front and rear sides. The trailing arm has a plate body(6a) formed to a certain thickness; distal end flanges(6b,6c) curved to height difference about the body and formed with both sides except both ends of the body; and reinforcing units(6b',6c') overlapped and rolled with the distal end flanges to increase strength by increasing the whole sectional coefficient.

Description

강성 강화 타입 트레일링 암을 구비한 차량용 후륜 현가장치{Suspension having stiffness improving typed trailing arm in vehicle}Suspension having stiffness improving typed trailing arm in vehicle}

도 1은 본 발명에 따른 강성 강화 타입 트레일링 암을 구비한 차량용 후륜 현가장치의 구성도1 is a block diagram of a rear wheel suspension for a vehicle having a rigid reinforcing type trailing arm according to the present invention

도 2 (가), (나), (다)는 트레일링 암의 강성 약화시 발생되는 변형 모드 상태도Figure 2 (a), (b), (c) is a deformation mode state diagram generated when the trailing arm stiffness weakened

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

1 : 쇽업소버 2 : 어퍼암1: Shock absorber 2: Upper arm

3 : 로워암 4 : 크로스멤버3: lower arm 4: cross member

5 : 캐리어 6 : 트레일링 암5: carrier 6: trailing arm

6a : 바디 6b,6c : 끝단플랜지6a: Body 6b, 6c: End Flange

6b',6c' : 강성강화부6b ', 6c': Rigid reinforced part

A,B,C : 응력집중부A, B, C: stress concentration part

본 발명은 트레일링 암을 구비한 차량용 후륜 현가장치에 관한 것으로, 보다 상세하게는 트레일링 암의 형상과 특성을 유지하면서 강성을 증가와 더불어 내구수명과 좌굴 하중을 향상할 수 있도록 된 강성 강화 타입 트레일링 암을 구비한 차량용 후륜 현가장치에 관한 것이다.The present invention relates to a rear wheel suspension for a vehicle having a trailing arm, and more particularly, a rigidity reinforcement type capable of increasing rigidity and improving durability life and buckling load while maintaining the shape and characteristics of the trailing arm. A rear wheel suspension for a vehicle having a trailing arm.

일반적으로 차량의 후륜 현가장치 중 하나인 트레일링 암은 전후방향으로 설치되어 전후방향으로 가해지는 하중 및 진동을 지지하고 완충하는 역할을 하는데, 이는 한쪽 끝이 부쉬를 매개로 차량차체에 볼트 체결되고 다른 한쪽은 차량의 타이어에 장착되는 캐리어와 볼트 체결되어 종방향의 강성과 토션을 지지하게 된다. In general, the trailing arm, which is one of the rear suspensions of the vehicle, is installed in the front and rear directions to support and cushion the load and vibration applied in the front and rear directions, and one end is bolted to the vehicle body through the bushing. The other side is bolted to the carrier mounted on the tire of the vehicle to support the longitudinal stiffness and torsion.

그러나, 이와 같은 트레일링 암은 차량 주행 시 타이어를 통하여 전후방향으로 들어오는 하중에 대한 강성은 충분한 반면, 통상적으로 상기 트레일링 암이 얇은 판재를 성형해 제조되는 특성상 차량의 횡 방향으로 가해지는 압축과 비틀림 및 벤딩(굽힘)에 매우 취약하며 특히, 전방충돌과 같은 큰 하중이 가해질 때는 벤딩이 발생하면서 좌굴이 발생하는 현상이 있게 된다. However, while such a trailing arm has sufficient rigidity against a load coming back and forth through a tire when the vehicle is driven, the trailing arm is usually formed by forming a thin plate and thus compresses applied in the transverse direction of the vehicle. It is very susceptible to torsion and bending (bending), and especially when a large load such as a frontal collision is applied, there is a phenomenon that the bending occurs while the bending occurs.

이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 양 끝단부위를 서로 겹쳐지도록 말아 횡 방향 끝단 단면계수 증가를 통해 벤딩과 비틀림에 저항하는 고장력을 갖도록 함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above, and its purpose is to have a high tensile force that resists bending and twisting by increasing the cross-sectional end surface coefficients in both directions so as not to overlap each other.

상기와 같은 목적을 달성하기 위한 본 발명은, 차체의 폭방향으로 가로질러 설치되는 크로스멤버와, 상기 리어크로스멤버의 양단에 각각 연결되어 설치되어 횡 방향 강성을 지지하는 한 쌍의 어퍼·로워암, 노면 충격을 흡수·완충하는 쇽업소버 및 일단이 캐리어에 결합되고 타단이 부쉬를 매개로 차량 차체 측에 결합되어져 전·후 방향으로 가해지는 하중·진동을 지지하고 완충하는 트레일링 암으로 구성되어진 차량용 후륜 현가장치에 있어서,The present invention for achieving the above object is a pair of upper and lower arms that are connected to both ends of the rear cross member and provided across the width direction of the vehicle body, respectively, to support the lateral rigidity. It consists of a shock absorber that absorbs and buffers road shocks, and a trailing arm, one end of which is coupled to the carrier and the other end of which is coupled to the vehicle body via a bushing to support and cushion the load and vibration applied in the front and rear directions. In the vehicle rear wheel suspension,

상기 트레일링 암은 일정 두께를 갖는 평평한 판재인 바디와, 상기 바디의 양 끝단부위를 제외한 양 측면부위를 이루면서 바디에 대해 높이 차를 갖도록 절곡된 끝단플랜지 및 상기 끝단플랜지를 서로 겹쳐지도록 말리면서 감아진 형상의 강성강화부로 이루어진 것을 특징으로 한다.The trailing arm is a flat plate body having a certain thickness, the end flange and the end flange bent to have a height difference with respect to the body while forming both side portions except the both end portions of the body and rolled so as to overlap each other It is characterized by consisting of a rigid reinforced portion of the true shape.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 강성 강화 타입 트레일링 암을 구비한 차량용 후륜 현가장치의 구성도를 도시한 것인바, 본 발명의 후륜 현가장치는 차체의 폭방향으로 가로질러 설치되는 크로스멤버(4)와, 상기 리어크로스멤버(10)의 양단에 각각 연결되어 설치되어 횡 방향 강성을 지지하는 한 쌍의 어퍼·로워암(2,3), 노면 충격을 흡수·완충하는 쇽업소버(S) 및 일단이 캐리어(5)에 결합되고 타단이 부쉬를 매개로 차량 차체 측에 결합되어져 전·후 방향으로 가해지는 하중·진동을 지지하고 완충하는 트레일링 암(6)으로 구성되어진다.1 is a block diagram of a rear wheel suspension for a vehicle having a rigid reinforcing type trailing arm according to the present invention, the rear wheel suspension of the present invention is a cross member (4) installed across the width direction of the vehicle body; And a pair of upper lower arms 2 and 3 connected to both ends of the rear cross member 10 to support lateral rigidity, shock absorbers S for absorbing and buffering road surface shocks, and one end. The trailing arm 6 is coupled to the carrier 5 and the other end is coupled to the vehicle body side via a bush to support and cushion the load and vibration applied in the front and rear directions.

여기서, 상기 트레일링 암(6)은 일정 두께를 갖는 평평한 판재인 바디(6a)와, 상기 바디(6a)의 양 끝단부위를 제외한 양 측면부위를 이루면서 바디(6a)에 대 해 높이 차를 갖도록 절곡된 끝단플랜지(6b,6c) 및 상기 끝단플랜지(6b,6c)를 서로 겹쳐지도록 말리면서 감아주어 전체적인 단면 계수를 증가하면서 동시에 강성을 증가하는 강성강화부(6b',6c')로 이루어진다.Here, the trailing arm 6 has a height difference with respect to the body 6a while forming a body 6a which is a flat plate having a predetermined thickness and both side portions except for both end portions of the body 6a. The bent end flanges 6b and 6c and the end flanges 6b and 6c are rolled up so as to overlap each other, and are made of rigid reinforcing parts 6b 'and 6c' which increase the overall cross-sectional coefficient and increase rigidity.

이하 본 발명의 작동을 첨부된 도면을 참조로 상세히 설명한다.Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 후륜 현가장치를 이루는 트레일링 암(6)이 양 측면부위인 절곡된 끝단플랜지(6b,6c)에서 서로 겹쳐지도록 말리면서 감아진 강성강화부(6b',6c')를 형성하게 되면, 상기 강성강화부(6b',6c')가 형성되지 않는 경우에 비해 상대적으로 트레일링 암(6)의 단면계수가 강성강화부(6b',6c')의 감겨진 정도에 따라 증가되고, 이에 따라 얇고 평평한 판재로 제작되는 트레일링 암(6)의 전체적인 강성도 강화되어진다.According to the present invention, when the trailing arm 6 constituting the rear wheel suspension is rolled to overlap each other in the bent end flanges 6b and 6c, which are both side portions, the rigid reinforcing portions 6b 'and 6c' are wound. Compared to the case where the rigid reinforcing parts 6b 'and 6c' are not formed, the cross-sectional coefficient of the trailing arm 6 is increased with the degree of winding of the rigid reinforcing parts 6b 'and 6c'. This also enhances the overall rigidity of the trailing arm 6, which is made of a thin, flat sheet.

즉, 상기 트레일링 암(6)의 강성이 트레일링 암(6)의 단면계수 증가에 따라 강성도 함께 증가하기 때문임은 물론이다.That is, it is a matter of course that the stiffness of the trailing arm 6 also increases with stiffness as the cross-sectional coefficient of the trailing arm 6 increases.

이에 따라, 상기 트레일링 암(6)의 단면 계수 증가와 더불어 강성이 증가되면서, 얇고 평평한 판재로 이루어진 트레일링 암(6)에 가해지는 벤딩(Bending)과 비틀림(Torsion)에 저항하는 고장력을 제공함하고, 이는 상기 트레일링 암(6)에서 요구되는 탄성적인 특성과 형상을 변화시키지 않으면서 도 내구수명과 좌굴 하중을 향상시켜 줄 수 있게 된다.Accordingly, the rigidity is increased along with the increase in the cross-sectional coefficient of the trailing arm 6, thereby providing a high tensile strength that resists bending and torsion applied to the trailing arm 6 made of a thin flat plate. In this case, it is possible to improve the endurance life and the buckling load without changing the elastic characteristics and shape required in the trailing arm (6).

이와 같이, 상기 트레일링 암(6)이 갖는 더 한층 강화된 강성에 따른 내구성 향상은 도 2에 도시된 바와 같이 알 수 있는데 즉, 버클링 변형 형상(Buckling Deformed Shape)을 나타낸 도 2(가)에 도시된 바와 같이 트레일링 암(6)의 응력집중부(A,B)가 캐리어(5)와 차체 바디의 체결점 부위로 집중되어 좌굴하중에 대한 내구성을 향상하면서 내구 수명도 향상시켜 주게 된다.As such, the durability improvement according to the further strengthened stiffness of the trailing arm 6 can be seen as shown in FIG. 2, that is, FIG. 2 (a) showing the Buckling Deformed Shape. As shown in FIG. 5, the stress concentrations A and B of the trailing arm 6 are concentrated at the connection point between the carrier 5 and the body of the body, thereby improving durability against buckling load and improving durability. .

이는, 상기 트레일링 암(6)에 작용하는 벤딩과 토션을 가할 때 보다 명확히 알 수 있는데 즉, 도 2(나)에서와 같이 상기 트레일링암(6)에 토션이 발생되는 경우, 캐리어(5)와 차체 바디의 체결점 부위로 집중된 응력집중부(A,B)가 상기 트레일링암(6)의 끝단플랜지(6b,6c)에 형성된 강성강화부(6b',6c')쪽으로 전달되지만, 상기 끝단플랜지(6b,6c)로 전달된 응력집중부(C)는 강성강화부(6b',6c')의 겹쳐지도록 말려진 구조를 통해 증가된 단면과 서로간의 접촉력 및 마찰력에 의한 저항력 증가를 통해 매우 약하게 형성된다.This can be seen more clearly when applying bending and torsion acting on the trailing arm 6, ie when torsion occurs in the trailing arm 6 as shown in FIG. And stress concentrations A and B concentrated at the fastening points of the body body are transferred toward the rigid reinforcement parts 6b 'and 6c' formed at the end flanges 6b and 6c of the trailing arm 6, but the ends The stress concentration portion C transmitted to the flanges 6b and 6c is very much increased through the increased cross-section through the structure of the rigidly reinforced portions 6b 'and 6c' and the resistance due to the contact force and the frictional force. Weakly formed

또한, 도 2(다)에서와 같이 상기 트레일링암(6)에 벤딩이 발생되는 경우에도 트레일링암(6)의 끝단플랜지(6b,6c)로 전달된 응력집중부(C)가 약하게 형성되는데 이는, 상기 트레일링암(6)의 끝단플랜지(6b,6c)에 형성된 강성강화부(6b',6c')의 겹쳐지도록 말려진 구조가 전체적인 단면을 증가시키면서 동시에 서로간의 접촉력과 마찰력에 의한 저항력도 증가되므로, 상기 트레일링 암(6)의 캐리어(5)와 차체 바디의 체결점 부위로 집중된 응력집중부(A,B)에 비해 상기 트레일링암(6)의 끝단플랜지(6b,6c)로 형성되는 응력집중부(C)가 매우 약하게 형성된다.In addition, even when bending occurs in the trailing arm 6 as shown in FIG. 2 (c), the stress concentration part C transmitted to the end flanges 6b and 6c of the trailing arm 6 is weakly formed. The overlapped structure of the rigid reinforcing parts 6b 'and 6c' formed at the end flanges 6b and 6c of the trailing arm 6 increases the overall cross section and at the same time increases the resistance due to the contact force and the frictional force between them. Therefore, the flanges 6b and 6c of the trailing arms 6 are formed as compared to the stress concentrations A and B concentrated at the fastening points of the body 5 and the carrier 5 of the trailing arm 6. The stress concentration part C is formed very weakly.

이상 설명한 바와 같이 본 발명에 의하면, 얇은 판재로 제작되는 트레일링 암의 양 쪽 측면부위에 대한 횡 방향 끝단 단면을 증가시키도록 서로 겹쳐져 말아지도록 해, 트레일링 암의 단면계수 증가에 따른 강성 향상과 더불어 비틀림과 벤딩에 대한 저항력을 증가시켜 내구수명을 향상시킬 수 있는 효과가 있다.As described above, according to the present invention, it is possible to overlap each other so as to increase the transverse end cross sections with respect to both side portions of the trailing arm made of a thin plate, thereby improving the rigidity according to the increase in the cross-sectional coefficient of the trailing arm. In addition, it has the effect of improving the durability life by increasing the resistance to torsion and bending.

또한, 본 발명은 트레일링암의 전체적인 형상과 특성을 유지하면서 단면계수와 강성을 증가시켜주므로 설계 변경이나 추가적인 제작 작업 공수의 증가등이 거의 발생되지 않는 효과가 있음은 물론이다.In addition, the present invention increases the cross-sectional coefficient and stiffness while maintaining the overall shape and characteristics of the trailing arm, so that the design change or increase in the number of additional manufacturing work is hardly generated.

Claims (1)

차체의 폭방향으로 가로질러 설치되는 크로스멤버(4)와, 상기 리어크로스멤버(10)의 양단에 각각 연결되어 설치되어 횡 방향 강성을 지지하는 한 쌍의 어퍼·로워암(2,3), 노면 충격을 흡수·완충하는 쇽업소버(S) 및 일단이 캐리어(5)에 결합되고 타단이 부쉬를 매개로 차량 차체 측에 결합되어져 전·후 방향으로 가해지는 하중·진동을 지지하고 완충하는 트레일링 암(6)으로 구성되어진 차량용 후륜 현가장치에 있어서, A pair of upper lower arms 2 and 3 connected to both ends of the rear cross member 10 and cross-members 4 provided in the width direction of the vehicle body and supporting the lateral rigidity, respectively; A shock absorber (S) for absorbing and buffering road shocks and one end coupled to the carrier (5) and the other end coupled to the vehicle body through a bush to support and cushion loads and vibrations applied in the front and rear directions. In the vehicle rear wheel suspension composed of a ring arm (6), 상기 트레일링 암(6)은 일정 두께를 갖는 평평한 판재인 바디(6a)와, 상기 바디(6a)의 양 끝단부위를 제외한 양 측면부위를 이루면서 바디(6a)에 대해 높이 차를 갖도록 절곡된 끝단플랜지(6b,6c) 및 상기 끝단플랜지(6b,6c)를 서로 겹쳐지도록 말리면서 감아진 형상의 강성강화부(6b',6c')로 이루어진 것을 특징으로 하는 강성 강화 타입 트레일링 암을 구비한 차량용 후륜 현가장치.The trailing arm 6 is bent to have a height difference with respect to the body 6a while forming a body 6a which is a flat plate having a predetermined thickness and both side portions except for both ends of the body 6a. A rigid reinforcing type trailing arm comprising a flange 6b, 6c and the end flanges 6b, 6c which are rolled up so as to overlap each other. Vehicle rear wheel suspension.
KR1020050063175A 2005-07-13 2005-07-13 Suspension having stiffness improving typed trailing arm in vehicle KR20070008153A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101471041B1 (en) * 2014-07-09 2014-12-09 주식회사 유런하이테크 Working process of trailing arm for car

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101471041B1 (en) * 2014-07-09 2014-12-09 주식회사 유런하이테크 Working process of trailing arm for car

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