KR20040003480A - structure for connecting a shock absorber and a lower arm for front suspension of a vehicle - Google Patents
structure for connecting a shock absorber and a lower arm for front suspension of a vehicle Download PDFInfo
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- KR20040003480A KR20040003480A KR1020020038196A KR20020038196A KR20040003480A KR 20040003480 A KR20040003480 A KR 20040003480A KR 1020020038196 A KR1020020038196 A KR 1020020038196A KR 20020038196 A KR20020038196 A KR 20020038196A KR 20040003480 A KR20040003480 A KR 20040003480A
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- South Korea
- Prior art keywords
- lower arm
- shock absorber
- connecting member
- vehicle
- arm
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- 230000035939 shock Effects 0.000 title claims abstract description 37
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 35
- 239000000725 suspension Substances 0.000 title claims abstract description 19
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 235000009419 Fagopyrum esculentum Nutrition 0.000 description 1
- 240000008620 Fagopyrum esculentum Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
Classifications
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- 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
- 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
-
- 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
- B60G2206/50—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
- 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
- B60G2206/82—Joining
- B60G2206/8207—Joining by screwing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
본 발명은, 차량 전륜 현가장치의 쇽 업소바와 로워 암 사이의 연결구조에 관한 것으로서, 조향 너클(32)과, 상기 조향 너클의 상부에 연결된 어퍼 암(34)과, 상기 조향 너클의 하부에 연결된 로워 암(36)과, 차량의 충격을 흡수하는 쇽 업소바와 상기 로워 암을 연결하는 연결부재(42)와, 상기 연결부재를 상기 로워 암에 체결하는 체결부재(46)를 구비한 차량 전륜 현가장치에 있어서, 상기 쇽 업소바가 끼워지는 연결부재의 상단부(42a)의 중심과 상기 체결부재가 끼워지는 연결부재의 하단부(42b)의 중심을 잇는 선은 쇽 업소바에 작용하는 하중의 작용선과 동일하게 되어 있으므로, 로워 암에 비틀림 하중이 가해지지 않아 로워 암의 이상변형 및 손상을 방지하여 부품의 내구성을 높인다.The present invention relates to a connection structure between a shock absorber and a lower arm of a vehicle front wheel suspension device, comprising: a steering knuckle 32, an upper arm 34 connected to an upper portion of the steering knuckle, and a lower portion of the steering knuckle; Vehicle front wheel suspension having a lower arm 36, a shock absorber that absorbs the impact of the vehicle, a connecting member 42 for connecting the lower arm, and a fastening member 46 for fastening the connecting member to the lower arm. In the apparatus, the line connecting the center of the upper end portion 42a of the connecting member to which the shock absorber is fitted and the center of the lower end 42b of the connecting member to which the fastening member is fitted is the same as the action line of the load acting on the shock absorber. Since no torsional load is applied to the lower arm, it prevents abnormal deformation and damage of the lower arm, thereby increasing the durability of the parts.
Description
본 발명은 차량의 전륜 현가장치에 관한 것으로서, 보다 상세하게는 차량의 전륜 현가 장치의 쇽 업소바와 로워 암 사이의 연결구조에 관한 것이다.The present invention relates to a front wheel suspension of a vehicle, and more particularly, to a connection structure between a shock absorber and a lower arm of a front wheel suspension of a vehicle.
도1에 도시한 바와 같이 종래 차량의 전륜 현가장치는, 차륜(T)의 휠을 회전가능케 지지하는 조향 너클(2)의 상부에는 어퍼 암(4)이 연결되고, 상기 조향 너클(2)의 하부에는 로워 암(6)이 연결되며, 차량의 중량을 지지하는 한편 충격을 완화시키는 스프링(8) 및 쇽 업소바(10)가 연결부재(12)를 통해 상기 로워 암(6)에 취부된다.As shown in FIG. 1, in the front wheel suspension of a conventional vehicle, an upper arm 4 is connected to an upper portion of a steering knuckle 2 rotatably supporting a wheel of a wheel T, and A lower arm 6 is connected to the lower part, and a spring 8 and a shock absorber 10 for supporting the weight of the vehicle and mitigating shock are mounted to the lower arm 6 through the connecting member 12. .
상기 로워 암(6)은 하나로 되어 있거나, 도시한 바와 같이 제1로워 암(14)과 제2로워 암(16)으로 분리되어 있다.The lower arm 6 is one or divided into a first lower arm 14 and a second lower arm 16 as shown.
상기 연결부재(12)는 포크 형태로 되어 있으며, 도2에 도시한 바와 같이 그 상단부는 상기 쇽 업소바(10)에 외삽되고, 그 하단부는 상기 제1로워 암(14)의 측면에서 체결부재(볼트, 너트)를 통해 상기 제1로워 암(14)에 고정된다.The connecting member 12 is in the form of a fork, as shown in Figure 2, the upper end is extrapolated to the shock absorber 10, the lower end is a fastening member on the side of the first lower arm 14 It is fixed to the first lower arm 14 via (bolts, nuts).
상기 제1로워 암(14)에는 수평방향으로 관통구멍이 형성되고, 이 관통구멍에 부시(18)가 내삽되고, 상기 부시(18)에 상기 볼트(20)가 끼워져 너트(22)에 의해 상기 연결부재(12)를 고정하게 된다.A through hole is formed in the first lower arm 14 in a horizontal direction, and a bush 18 is inserted into the through hole, and the bolt 20 is fitted into the bush 18 so that the nut 22 The connecting member 12 is fixed.
그런데, 이와 같이 구성된 종래 차량 전륜 현가장치의 쇽 업소바와 로워 암 사이의 연결구조에 의하면, 도2에 도시한 바와 같이 쇽 업소바(18)에 하중(P)이 작용하게 되면, 화살표 방향으로 연결부재(12)을 통해 하중이 전달되므로, 쇽 업쇼바(18)의 중심과 제1로워 암(14)을 연결하는 중심선에서 편심되게 하중이 가해져서 비틀리는 현상이 발생하고, 이로 인해 제1로워 암(14)의 양단에 위치한 볼 조인트 또는 부시에는 과도한 비틀림 하중이 작용하여 부품의 내구 수명이 감소하게 되고, 부시의 이상변형으로 현가장치에서 의도하는 성능에 악영향을 준다는 문제점이 있었다.However, according to the connection structure between the shock absorber and the lower arm of the conventional vehicle front wheel suspension configured as described above, when the load P acts on the shock absorber 18 as shown in FIG. Since the load is transmitted through the member 12, an eccentric load is applied at the centerline connecting the center of the shock absorber 18 and the first lower arm 14, thereby causing a twisting phenomenon. Excessive torsional load acts on the ball joints or bushes located at both ends of the arm 14 to reduce the durability life of the parts, and the abnormal deformation of the bush has a problem that adversely affects the intended performance of the suspension.
특히, 로워 암(6)이 제1로워 암(14)과 제2로워 암(16)등으로 분리된 구조에서는 도3에 도시한 바와 같이 차륜(T)이 조타된 상태가 될 때 로워 암(14, 16)들에 회전변위가 생기게 되어 로워 암(14, 16) 끼리 서로 근접하게 됨에 따라 로워암과 연결부재간에 충돌이 발생한다는 문제점이 있었다. 물론 충돌이 발생되지 않게 연결부재를 비켜가게 위치시킬 수도 있으나 연결부재가 제1로워 암의 차체측 끝단으로 가까이 갈수록 스프링이 차체에 접근하게 되어 차체 단면이 감소하게 되고 또한 레버비의 감소로 쇽 업소바 및 스프링의 특성이 강하게 된다. 이는 제조상 불리할 뿐만 아니라 중량증가의 원인이 되므로 바람직하지 않은 것이다.Particularly, in the structure in which the lower arm 6 is divided into the first lower arm 14 and the second lower arm 16, the lower arm 6 when the wheel T is steered as shown in FIG. 3. 14 and 16, rotational displacements occur, and thus the lower arms 14 and 16 are close to each other, thereby causing a collision between the lower arm and the connecting member. Of course, it is also possible to position the connecting member out of the way so that a collision does not occur, but as the connecting member moves closer to the vehicle body end of the first lower arm, the spring approaches the vehicle body, thereby reducing the cross section of the vehicle body and reducing the lever ratio. The characteristics of the bar and the spring become strong. This is undesirable because not only manufacturing disadvantages but also cause weight increase.
따라서, 본 발명은 상기 문제점을 해결하기 위해 이루어진 것으로서, 본 발명의 목적은 로워 암에 비틀림 하중이 가해지지 않게 하여 로워 암의 이상변형 및 손상을 방지하여 부품의 내구성을 높이는 차량 전륜 현가장치의 쇽 업소바와 로워 암 사이의 연결구조를 제공하는데 있다.Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to prevent a torsional load from being applied to the lower arm to prevent abnormal deformation and damage of the lower arm, thereby improving the durability of the vehicle front wheel suspension device. It is to provide a connection structure between the soba and the lower arm.
도1은 종래 쇽 업소바와 로워 암 사이의 연결구조가 적용된 차량 전륜 현가장치를 나타내는 사시도,1 is a perspective view showing a vehicle front wheel suspension device to which a connection structure between a conventional shock absorber and a lower arm is applied;
도2는 도1의 쇽 업소바에서 로워 암으로 하중이 전달되는 작용상태도,Figure 2 is an operating state in which the load is transmitted to the lower arm in the shock absorber of Figure 1,
도3은 도1에서 차륜이 조타된 상태에서의 개략 평면도,3 is a schematic plan view in a state where the wheel is steered in FIG. 1;
도4는 본 발명에 의한 쇽 업소바와 로워 암 사이의 연결구조가 적용된 차량 전륜 현가장치를 나타내는 사시도,4 is a perspective view showing a vehicle front wheel suspension device to which a connection structure between a shock absorber and a lower arm according to the present invention is applied;
도5는 도4의 쇽 업소바와 로워 암 사이의 연결구조를 나타내는 구성도,5 is a configuration diagram showing a connection structure between the shock absorber and the lower arm of FIG. 4;
도6은 도4의 쇽 업소바에서 로워 암으로 하중이 전달되는 작용상태도이다.FIG. 6 is an operational state diagram in which load is transmitted from the shock absorber of FIG. 4 to the lower arm. FIG.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
32 : 조향 너클 34 : 어퍼 암32: Steering Knuckle 34: Upper Arm
36 : 제1로워 암 38 : 스프링36: first lower arm 38: spring
40 : 쇽 업소바 42 : 연결부재40: shock absorber 42: connecting member
42a : 상단부 42b : 하단부42a: upper part 42b: lower part
44 : 제2로워암 46 : 체결부재44: second lower arm 46: fastening member
48 : 부시 50 : 너트48: bush 50: nut
본 발명에 의한 차량 전륜 현가장치의 쇽 업소바와 로워 암 사이의 연결구조는, 조향 너클과, 상기 조향 너클의 상부에 연결된 어퍼 암과, 상기 조향 너클의 하부에 연결된 로워 암과, 차량의 충격을 흡수하는 쇽 업소바와 상기 로워 암을 연결하는 연결부재와, 상기 연결부재를 상기 로워 암에 체결하는 체결부재를 구비한 차량 전륜 현가장치에 있어서, 상기 쇽 업소바가 끼워지는 연결부재의 상단부의 중심과 상기 체결부재가 끼워지는 연결부재의 하단부의 중심을 잇는 선은 쇽 업소바에 작용하는 하중의 작용선과 동일하게 되어 있는 것을 특징으로 한다.The connection structure between the shock absorber and the lower arm of the vehicle front wheel suspension according to the present invention includes a steering knuckle, an upper arm connected to an upper portion of the steering knuckle, a lower arm connected to a lower portion of the steering knuckle, and a vehicle impact. A vehicle front wheel suspension having a connecting member for absorbing a shock absorber and the lower arm and a fastening member for fastening the connecting member to the lower arm, comprising: a center of an upper end portion of a connecting member to which the shock absorber is fitted; The line connecting the center of the lower end of the connecting member to which the fastening member is fitted is the same as the working line of the load acting on the shock absorber.
상기 로워 암은, 상기 연결부재의 하단부의 측면에 밀착하는 수직 플랜지와, 상기 연결부재의 하단부 하측에 위치하는 수평플랜지에 의해 ㄴ단면형으로 된 것을 특징으로 한다.The lower arm is characterized in that the cross-section is formed by a vertical flange in close contact with the side of the lower end of the connecting member, and a horizontal flange located below the lower end of the connecting member.
본 발명의 실시예에 대하여 첨부도면을 참조하여 상세히 설명한다. 본 발명은 로워 암이 하나로 된 차량의 전륜 현가장치에 적용될 수도 있으나, 본 실시예에서는 로워 암이 두 개로 분리된 구조에 대해 예로 들어 설명한다.Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may be applied to a front wheel suspension of a vehicle in which a lower arm is one, but in the present embodiment, a structure in which the lower arm is divided into two will be described as an example.
도4에 도시한 바와 같이 차륜(T)의 휠을 회전가능케 지지하는 조향 너클(32)의 상부에는 어퍼 암(34)이 연결되고, 상기 조향 너클(32)의 하부에는 제1로워 암(36)이 차축과 평행하게 연결되며, 차량의 중량을 지지하는 한편 충격을 완화시키는 스프링(38) 및 쇽 업소바(40)가 연결부재(42)를 통해 상기 제1로워 암(36)에 취부되고, 상기 제1로워 암(36)의 일측에는 제2로워 암(44)이 차축과 소정의 각도를 이루게 차륜의 휠에 취부된다.As shown in FIG. 4, an upper arm 34 is connected to an upper portion of the steering knuckle 32 rotatably supporting the wheel of the wheel T, and a first lower arm 36 is connected to the lower portion of the steering knuckle 32. Is connected in parallel with the axle, and a spring 38 and shock absorber 40, which support the weight of the vehicle and alleviate the impact, are mounted to the first lower arm 36 via a connecting member 42. On one side of the first lower arm 36, a second lower arm 44 is mounted on the wheel of the wheel to form a predetermined angle with the axle.
상기 연결부재(42)는 포크 형태로 되어 있으며, 도5에 도시한 바와 같이 그 상단부(42a)에는 수직방향으로 관통구멍이 형성되어 상기 쇽 업소바(40)에 외삽되고, 그 하단부(42b)는 수평방향으로 관통구멍이 형성되어 체결볼트(46)를 통해 상기 제1로워 암(34)에 연결된다. 상기 하단부(42b)에 형성된 관통구멍에는 부시(48)가 끼워진다.The connecting member 42 has a fork shape, and as shown in FIG. 5, a through hole is formed in the upper end portion 42a in the vertical direction and extrapolated to the shock absorber 40, and the lower end portion 42b thereof. The through hole is formed in the horizontal direction is connected to the first lower arm 34 through the fastening bolt 46. The bush 48 is fitted into the through hole formed in the lower end portion 42b.
상기 쇽 업소바(40)가 끼워지는 연결부재의 상단부(42a)의 중심(관통구멍의 중심선)과 상기 체결볼트(46)가 끼워지는 연결부재의 하단부(42b)의 중심(관통구멍 길이의 중간)을 잇는 선(CL)은 쇽 업소바에 작용하는 하중(P)의 작용선과 동일하게 되어 있다.The center of the upper end portion 42a of the connecting member to which the shock absorber 40 is fitted (the center line of the through hole) and the center of the lower end portion 42b of the connecting member into which the fastening bolt 46 is fitted (the middle of the through hole length). The line CL connecting) is the same as the action line of the load P acting on the shock absorber.
상기 제1로워 암(36)은, 상기 연결부재의 하단부(42b)의 측면에 밀착하는 수직플랜지(36a)와, 상기 연결부재의 하단부(42b) 하측에 위치하는 수평플랜지(36b)에 의해 ㄴ단면형으로 되어 있다. 상기 수직플랜지(36a)에는 상기 체결볼트(46)가 끼워지는 구멍이 수평방향으로 형성되어 있다.The first lower arm 36 is formed by a vertical flange 36a in close contact with the side surface of the lower end portion 42b of the connecting member, and a horizontal flange 36b positioned below the lower end portion 42b of the connecting member. It has a cross-sectional shape. In the vertical flange 36a, a hole into which the fastening bolt 46 is fitted is formed in a horizontal direction.
상기 체결볼트(46)는 상기 제1로워 암의 수직플랜지(36a)에 형성된 관통구멍을 통해 상기 연결부재의 하단부(42b)에 끼워진 부시(48)를 통과하여 너트(50)에 의해 조여진다.The fastening bolt 46 is tightened by a nut 50 through a bush 48 fitted in the lower end 42b of the connection member through a through hole formed in the vertical flange 36a of the first lower arm.
이와 같이 구성된 본 발명에 의한 차량 전륜 현가장치의 쇽 업소바와 로워 암 사이의 연결구조에서, 도6에 도시한 바와 같이, 쇽 업소바(40)에 하중(P)이 작용하면, 그 하중의 작용선은 상기 쇽 업소바(40)가 끼워지는 연결부재의 상단부(42a)의 중심과 상기 체결부재(46)가 끼워지는 연결부재의 하단부(42b)의 중심을 잇는 선(CL)과 동일하게 되어 있으므로, 연결부재에 결합되는 제1로워 암(36)에 비틀림 모멘트가 발생하지 않게 되어 부품의 이상변형을 방지할 수 있다.In the connection structure between the shock absorber and the lower arm of the vehicular front wheel suspension according to the present invention configured as described above, as shown in Fig. 6, when the load P acts on the shock absorber 40, the action line of the load Is the same as the line CL connecting the center of the upper end portion 42a of the connecting member to which the shock absorber 40 is fitted and the center of the lower end portion 42b of the connecting member to which the fastening member 46 is fitted. The torsion moment is not generated in the first lower arm 36 coupled to the connection member, thereby preventing abnormal deformation of the part.
본 발명에 의한 차량 전륜 현가장치의 쇽 업소바와 로워 암 사이의 연결구조에 의하면, 로워 암에 비틀림 모멘트가 걸리지 않으므로, 부품의 이상변형 및 손상을 방지하고 의도하는 차량성능을 구현할 수 있다. 즉, 현가장치 아암이 정상 거동을 하게 되어 차량의 조정 특성이 안정성을 갖게 된다. 그리고, 쇽 업소바가 연결되는 로워 암의 양단의 부시 및 볼 조인트의 과도설계를 회피할 수 있어 부품의 원가절감을 이룰 수 있으며, 로워 암과 연결부재 간에 충돌을 방지하는 효과가 있다.According to the connection structure between the shock absorber and the lower arm of the vehicle front wheel suspension device according to the present invention, since the torsional moment is not applied to the lower arm, it is possible to prevent abnormal deformation and damage of the parts and to implement the intended vehicle performance. In other words, the suspension arm normalizes and the steering characteristics of the vehicle become stable. In addition, excessive design of the bush and ball joints at both ends of the lower arm to which the shock absorber is connected can be avoided, thereby achieving cost reduction of parts, and preventing the collision between the lower arm and the connecting member.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020038196A KR20040003480A (en) | 2002-07-03 | 2002-07-03 | structure for connecting a shock absorber and a lower arm for front suspension of a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020038196A KR20040003480A (en) | 2002-07-03 | 2002-07-03 | structure for connecting a shock absorber and a lower arm for front suspension of a vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20040003480A true KR20040003480A (en) | 2004-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020020038196A Ceased KR20040003480A (en) | 2002-07-03 | 2002-07-03 | structure for connecting a shock absorber and a lower arm for front suspension of a vehicle |
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| Country | Link |
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| KR (1) | KR20040003480A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61275011A (en) * | 1985-05-30 | 1986-12-05 | Mazda Motor Corp | Suspension device for automobile |
| KR19980016525U (en) * | 1996-09-18 | 1998-06-25 | 정몽규 | McPherson strut suspension with gas spring |
| KR19980040143A (en) * | 1996-11-29 | 1998-08-17 | 박병재 | McPherson Independent Suspension System for Automobile |
| JP2000203228A (en) * | 1999-01-14 | 2000-07-25 | Nissan Motor Co Ltd | Vehicle front suspension device |
-
2002
- 2002-07-03 KR KR1020020038196A patent/KR20040003480A/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61275011A (en) * | 1985-05-30 | 1986-12-05 | Mazda Motor Corp | Suspension device for automobile |
| KR19980016525U (en) * | 1996-09-18 | 1998-06-25 | 정몽규 | McPherson strut suspension with gas spring |
| KR19980040143A (en) * | 1996-11-29 | 1998-08-17 | 박병재 | McPherson Independent Suspension System for Automobile |
| JP2000203228A (en) * | 1999-01-14 | 2000-07-25 | Nissan Motor Co Ltd | Vehicle front suspension device |
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