KR100362408B1 - Lower arm for suspension - Google Patents

Lower arm for suspension Download PDF

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Publication number
KR100362408B1
KR100362408B1 KR1019960063529A KR19960063529A KR100362408B1 KR 100362408 B1 KR100362408 B1 KR 100362408B1 KR 1019960063529 A KR1019960063529 A KR 1019960063529A KR 19960063529 A KR19960063529 A KR 19960063529A KR 100362408 B1 KR100362408 B1 KR 100362408B1
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KR
South Korea
Prior art keywords
lower arm
ball joint
vehicle body
suspension
wheel
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KR1019960063529A
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Korean (ko)
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KR19980045347A (en
Inventor
이승욱
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기아자동차주식회사
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Priority to KR1019960063529A priority Critical patent/KR100362408B1/en
Publication of KR19980045347A publication Critical patent/KR19980045347A/en
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Publication of KR100362408B1 publication Critical patent/KR100362408B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00Pivoted suspension arms; Accessories thereof
    • B60G7/006Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10Mounting of suspension elements
    • B60G2204/14Mounting of suspension arms
    • B60G2204/143Mounting of suspension arms on the vehicle body or chassis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10Mounting of suspension elements
    • B60G2204/14Mounting of suspension arms
    • B60G2204/148Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/416Ball or spherical joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10Constructional features of arms
    • B60G2206/12Constructional features of arms with two attachment points on the sprung part of the vehicle

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

Abstract

PURPOSE: A lower arm for a suspension is provided to prevent torsion deformation of the lower arm by distributing and damping force to installation parts with forming the obtuse angle between a connection portion of a rear installation part and a ball joint, and to cut down manufacturing cost by decreasing the thickness of the lower arm. CONSTITUTION: A lower arm(1) is fastened in a steering knuckle supporting and rotating a wheel by a ball joint(5), and fixed to a sub frame of a vehicle body by a bushing at two point installation parts(3,3'). To distribute impact from the wheel, the angle between the extension line of the two point installation parts and the extension line transmitting shock is formed to be within the range of 100 to 130 angular degrees. The ball joint is fastened to the installation part for the front body of the vehicle. The obtuse angle is formed between the extension line of the two point installation parts and the connecting line of the rear installation part and the ball joint.

Description

현가장치의 로어 암Lower arm of suspension

본 발명은 현가장치의 로어 암에 관한 것으로서, 보다 구체적으로는 차체의 서브 프레임에 장착되는 장착부와, 조향 너클에 장착된 볼 조인트의 장착 위치를 새롭게 설정하여, 로어 암의 비틀림 변형을 방지할 수 있도록 한 현가장치의 로어 암에 관한 것이다.The present invention relates to a lower arm of a suspension system, and more specifically, by newly setting a mounting position of a mounting portion mounted to a subframe of a vehicle body and a ball joint mounted to a steering knuckle, it is possible to prevent torsional deformation of the lower arm. To the lower arm of the suspension.

주지된 바와 같이, 자동차의 현가장치는, 차체의 중량을 지지하고 동시에 노면으로부터 발생되는 차륜의 상,하 진동을 완충하여, 가능한 진동이 차체로 전달되지 않도록 한다.As is well known, the suspension of an automobile supports the weight of the vehicle body and at the same time buffers the up and down vibrations of the wheels generated from the road surface, so that possible vibrations are not transmitted to the vehicle body.

이러한 현가장치의 주요 기능은, (A) 자동차의 상하방향의 유연성을 제공하여 노면으로 부터의 압력에 의해 차체가 영향을 받지 않도록 하면서 불규칙한 노면을 주행할 수 있도록 하는 것과,The main function of such a suspension system is to (A) provide flexibility in the vertical direction of the vehicle so that the vehicle body can be driven on irregular roads without being affected by the pressure from the road surface,

(B) 노면에 대하여 최소의 하중변화를 가지도록 적절한 위치 및 상태로 로드 (road) 휠을 유지시키는 것과,(B) maintaining the road wheels in the proper position and condition to have a minimum load change with respect to the road surface;

(C) 타이어에 의해서 발생되는 상하 및 횡방향의 힘, 그리고 제동 및 구동력에 대응하는 것과,(C) corresponding to the vertical and lateral forces and braking and driving forces generated by the tire,

(D) 크게는 차체 진동을 억제하여 차량의 주행 안정성을 확보하는 것에 있다.(D) It is largely to suppress the vehicle body vibrations and to secure the running stability of the vehicle.

이러한 현가장치는 구조적으로 차축 일체식 및 독립식으로 특징 지워진다.Such suspensions are structurally characterized as axle integral and independent.

여기서, 일반적인 독립식 현가장치의 로어 암 구조가 도 1에 잘 나타나 있다.Here, the lower arm structure of a typical independent suspension is shown well in FIG.

도시된 바와 같이, 로어 암(1)은 휠을 회전 가능하게 지지하는 조향 너클에 결합되는 볼 조인트(2)와, 차체 하부의 서브 프레임에 적어도 2점의 타단이 고정되는 장착부(3, 3')와, 그 장착부(3, 3')와 볼 조인트(2)를 연결하는 바디(4)로 구성된다.As shown, the lower arm 1 has a ball joint 2 coupled to a steering knuckle rotatably supporting the wheel, and mounting portions 3, 3 'on which the other end of at least two points are fixed to a subframe below the vehicle body. ) And a body (4) connecting the mounting portions (3, 3 ') and the ball joint (2).

로어 암(1)의 장착부(3, 3')는 부싱을 매개로 하여 차체의 서브 프레임에 고정된다.The mounting parts 3, 3 ′ of the lower arm 1 are fixed to the subframe of the vehicle body via the bushing.

한편, 종래 기술의 하나로서, 부싱을 매개로 서스펜션 암을 차체 프레임에 장착하는 서스펜션 암용 브라켓이 일본국 실공평 제7-21367호에 개시되어 있다.On the other hand, as one of the prior arts, a suspension arm bracket for mounting a suspension arm on a vehicle body frame via a bushing is disclosed in Japanese Patent Application Laid-Open No. 7-21367.

또한, 대한민국 공개실용신안공보 제96-877호에는 크로스 멤버 본체에 지지판을 형성하고, 로어 암 본체의 조향 너클을 연결하는 볼 조인트 설치부의 반대편에 암축을 형성하여 부시를 끼우며, 그 하방에 부시를 감싸는 부시 지지판을 대고, 지지판과 부시 지지판을 셈즈 볼트로 고정하며, 암축에는 볼트를 체결한 독립 현가장치의 암 로어 암 연결구조가 개시되어 있다.In addition, the Republic of Korea Utility Model Publication No. 96-877 also forms a support plate on the cross member body, forms a female shaft on the opposite side of the ball joint installation portion connecting the steering knuckle of the lower arm body, and inserts a bush, the bush below A bush support plate enclosing the support plate, and the support plate and the bush support plate is fixed with a SEMEZ bolt, and the arm lower arm connection structure of the independent suspension device is fastened to the arm shaft is disclosed.

상술한 종래 현가장치의 로어 암에 있어서, 휠로부터 전해지는 충격력(F)은 차체의 서브 프레임에 고정된 장착부(3, 3')에 대하여, 대략 90°의 각도로 반력 (R)으로 작용된다.In the lower arm of the conventional suspension described above, the impact force F transmitted from the wheel acts as a reaction force R at an angle of approximately 90 ° with respect to the mounting portions 3 and 3 'fixed to the subframe of the vehicle body. .

이러한 수직 방향의 반력(R)은 로어 암(1)의 바디(4)에 작용되어, 비틀림 변형을 일으키게 되는 문제점이 있다.This vertical reaction force (R) is applied to the body 4 of the lower arm 1, there is a problem that causes torsional deformation.

이와 같은 문제점을 해소하기 위해, 종래에는 특히 차체의 리어쪽에 고정되는 장착부(3)와 볼 조인트(2)를 연결하는 바디(4)를, 충분한 내구성을 갖도록 형성하기 위해 로어 암(1)의 두께를 증가시키고 있다.In order to solve such a problem, the thickness of the lower arm 1 is conventionally used to form a body 4 connecting the ball joint 2 and the mounting portion 3 fixed to the rear side of the vehicle body, in particular, with sufficient durability. Is increasing.

그러나 상기와 같은 방식은 로어 암(1) 자체의 하중을 증가시켜, 현가장치의 성능을 저하시키게 되는 문제점이 있다.However, the above method has a problem in that the load of the lower arm 1 itself increases, thereby lowering the performance of the suspension system.

이러한 종래 기술의 문제점을 해소하기 위한 목적에서 안출된 것으로서, 본 발명은 휠로부터 발생된 충격이 분산 및 감쇠되어 차체에 전달되도록 하므로서, 바디의 비틀림 변형을 방지할 수 있도록 한다.As an object of the present invention is to solve the problems of the prior art, the present invention allows the impact generated from the wheel to be distributed and attenuated and transmitted to the vehicle body, thereby preventing torsional deformation of the body.

도 1은 일반적인 현가장치의 로어 암을 보인 평면도.1 is a plan view showing a lower arm of a typical suspension.

도 2는 본 발명에 의한 현가장치의 로어 암을 보인 평면도.Figure 2 is a plan view showing a lower arm of the suspension according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1-로어 암 3,3'-장착부1-Lower Arm 3,3 'Mount

4-바디 5-볼 조인트4-body 5-ball joint

상술한 목적을 달성하기 위하여, 본 발명은 다음과 같은 수단으로 실현되는를 제안한다.In order to achieve the above object, the present invention proposes to be realized by the following means.

즉, 본 발명은 휠로부터 전해지는 충격에 의해 조향 노클에 장착된 볼 조인트에 작용되는 힘이, 부싱을 매개로 차체의 서브 프레임에 장착된 2점의 장착부의 연장선에 대하여 둔각으로 작용되도록, 리어쪽 장착부와 볼 조인트를 잇는 연결부의 각도를 둔각으로 형성하므로서, 로어 암의 비틀림 변형을 방지할 수 있도록 한 것을 특징으로 한다.That is, the present invention is such that the force acting on the ball joint mounted to the steering knuckle by the impact transmitted from the wheel acts at an obtuse angle with respect to the extension line of the two-point mounting portion mounted on the subframe of the vehicle body through the bushing. By forming the angle of the connecting portion connecting the side mounting portion and the ball joint at an obtuse angle, it is characterized in that to prevent torsional deformation of the lower arm.

이하, 본 발명을 실현하는 바람직한 일 실시예를 첨부 도면에 의거하여 보다 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, one preferred embodiment which implements this invention is described in detail based on an accompanying drawing.

[실시예]EXAMPLE

도 2는 본 실시예에 관련된 현가장치의 로어 암을 보인 평면도이다.2 is a plan view showing a lower arm of the suspension system according to the present embodiment.

본 실시예를 설명함에 있어, 종래 기술에서 인용된 도면과 동일한 본 실시예의 구성에 대해서는 동일한 부호를 사용하고 있으며, 설명의 명료성을 위해 다시 설명하지 않는다.In describing the present embodiment, the same reference numerals are used for the configuration of the present embodiment, which is the same as the drawings cited in the prior art, and will not be described again for clarity of explanation.

도면에서의 설명 부호 (1)은 로어 암 전체를 지칭한다.Reference numeral 1 in the drawings refers to the entire lower arm.

로어 암(1)은 휠을 회전 가능하게 지지하는 조향 너클에 일단이 볼 조인트 (5)로 고정되고, 차체의 서브 프레임에 부싱을 매개로 적어도 2점의 장착부(3, 3')가 고정된다.The lower arm 1 has one end fixed to the steering knuckle for rotatably supporting the wheel by a ball joint 5, and at least two mounting portions 3 and 3 'are fixed to the subframe of the vehicle body via a bushing. .

여기서, 본 실시예에 의한 로어 암(1)은 휠로부터 발생되는 충격력(F)을 분산시키기 위해, 2점의 장착부(3, 3')의 연장선과 상기 충격력(F)이 전달되는 연장선의 각도(β)를 100∼130°로 형성한다.Here, the lower arm 1 according to the present embodiment, in order to distribute the impact force (F) generated from the wheel, the angle of the extension line of the two mounting portions (3, 3 ') and the extension line to which the impact force (F) is transmitted (β) is formed at 100 to 130 degrees.

이를 위해, 본 실시예에 의한 로어 암(1)은 차체의 서브 프레임에 고정되는 장착부(3, 3')에 대하여, 볼 조인트(5)의 고정 위치를 차체의 프론트쪽으로 치우치게 설정한다.For this purpose, the lower arm 1 according to the present embodiment sets the fixing position of the ball joint 5 to the front side of the vehicle body with respect to the mounting portions 3 and 3 'fixed to the subframe of the vehicle body.

이에 따라, 차체의 리어쪽 장착부(3)와 볼 조인트(5)를 잇는 바디(4)의 각도(β)는 100∼130°의 둔각으로 형성된다.Thereby, the angle (beta) of the body 4 which connects the rear mounting part 3 of the vehicle body and the ball joint 5 is formed in obtuse angle of 100-130 degrees.

상술한 본 실시예의 구성에 따라, 휠로부터 전해지는 충격력(F)은 차체의 서브 프레임에 고정된 장착부(3, 3')에 대하여, 대략 100∼130°의 각도로 반력(R)이 작용된다.According to the above-described configuration of this embodiment, the reaction force R is applied to the impact force F transmitted from the wheel at an angle of approximately 100 to 130 ° with respect to the mounting portions 3 and 3 'fixed to the subframe of the vehicle body. .

따라서, 본 실시예의 장착부(3, 3')에 작용되는 반력(R)은 분산 및 감쇠되고, 로어 암(1)의 바디 두께를 증가시키지 않더라도 비틀림 변형이 방지된다.Therefore, the reaction force R acting on the mounting portions 3, 3 'of the present embodiment is dispersed and attenuated, and torsional deformation is prevented even without increasing the body thickness of the lower arm 1.

이상에서 설명된 실시예를 통하여, 본 발명에 의한 현가장치의 로어 암은 종래 기술의 문제점을 실질적으로 해소하게 됨을 알 수 있다.Through the embodiments described above, it can be seen that the lower arm of the suspension device according to the present invention substantially solves the problems of the prior art.

즉, 본 발명에 의하면 로어 암의 비틀림 변형이 방지되는 효과를 얻게 된다.That is, according to the present invention, the torsional deformation of the lower arm is obtained.

또한, 로어 암의 두께를 축소할 수 있기 때문에, 중량과 제조 비용을 절감시키는 효과를 얻게 된다.In addition, since the thickness of the lower arm can be reduced, the weight and manufacturing cost can be reduced.

이러한 효과를 궁극적으로 현가장치의 성능을 향상시키게 된다.This effect ultimately improves the performance of the suspension.

한편, 본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 특허청구의 범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능할 것이다.On the other hand, the present invention is not limited to the above specific preferred embodiment, and any person having ordinary knowledge in the field to which the invention belongs without departing from the gist of the invention claimed in the claims, various changes Would be possible.

Claims (1)

휠을 회전 가능하게 지지하는 조향 너클에 볼 조인트로 고정되고, 차체의 서브프레임에 고정되는 2점의 장착부를 갖는 현가장치의 로어 암에 있어서, 휠로부터 전해지는 충격에 의해 볼 조인트에 작용되는 힘이, 2점의 장착부의 연장선에 대하여 둔각으로 작용되도록, 차체의 리어쪽 장착부와 볼 조인트를 잇는 바디의 각도가 둔각으로 형성된 것을 특징으로 하는 현가장치의 로어 암.In the lower arm of a suspension device having a two-point mounting portion fixed to a steering knuckle that rotatably supports the wheel and fixed to a subframe of the vehicle body, a force acting on the ball joint by an impact transmitted from the wheel. The lower arm of the suspension device, characterized in that the angle of the body connecting the rear mounting portion of the vehicle body and the ball joint is formed at an obtuse angle so as to act at an obtuse angle with respect to the extension line of the two mounting portions.
KR1019960063529A 1996-12-10 1996-12-10 Lower arm for suspension KR100362408B1 (en)

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KR100362408B1 true KR100362408B1 (en) 2003-09-26

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KR101684007B1 (en) * 2014-11-26 2016-12-08 현대자동차주식회사 Apparatus for sub-frame of vehicle
KR101994043B1 (en) 2018-08-01 2019-09-27 박윤규 Integrated Deck Elevator

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JPH0496509U (en) * 1991-01-30 1992-08-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0496509U (en) * 1991-01-30 1992-08-20

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