KR20030041247A - Double wishbone type suspension - Google Patents

Double wishbone type suspension Download PDF

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Publication number
KR20030041247A
KR20030041247A KR1020010071887A KR20010071887A KR20030041247A KR 20030041247 A KR20030041247 A KR 20030041247A KR 1020010071887 A KR1020010071887 A KR 1020010071887A KR 20010071887 A KR20010071887 A KR 20010071887A KR 20030041247 A KR20030041247 A KR 20030041247A
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KR
South Korea
Prior art keywords
lower arm
damper
vehicle body
bracket
double wishbone
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KR1020010071887A
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Korean (ko)
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KR100475600B1 (en
Inventor
이기연
Original Assignee
기아자동차주식회사
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Priority to KR10-2001-0071887A priority Critical patent/KR100475600B1/en
Publication of KR20030041247A publication Critical patent/KR20030041247A/en
Application granted granted Critical
Publication of KR100475600B1 publication Critical patent/KR100475600B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/13—Independent suspensions with longitudinal arms only
    • B60G2200/132—Independent suspensions with longitudinal arms only with a single trailing arm
    • B60G2200/1322—Independent suspensions with longitudinal arms only with a single trailing arm with a wishbone or triangular arm
    • 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
    • B60G2204/43—Fittings, brackets or knuckles
    • 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

Abstract

PURPOSE: A double wishbone suspension is provided to improve the strength against vertical reaction force applied from a damper to a lower arm by forming the asymmetric section of the lower arm and installing a bracket for connecting the damper and the lower arm in the inclined surface. CONSTITUTION: A double wishbone suspension comprises a steering knuckle(16) mounting a wheel; upper and lower arms(12,14) connecting the steering knuckle to a vehicle body; a damper(18) connected to the lower arm by a bracket(15), and fixed in the vehicle body; and a coil spring(20) surrounding the damper and absorbing impact and vibration from the road surface. The upper part of the lower arm is stepped to form the asymmetric section of the lower arm between the vehicle body and the steering knuckle, and steps are connected by an incline surface. The rigidity against vertical reaction force is increased by mounting the bracket in the inclined surface of the lower arm.

Description

더블 위시본식 현가 장치{Double wishbone type suspension}Double wishbone suspension device {Double wishbone type suspension}

본 발명은 자동차가 주행할 때 노면으로부터 차체로 전달되는 진동이나 충격을 완충하기 위한 현가 장치에 관한 것이고, 구체적으로는 댐퍼로부터 하부 암으로 전달되는 충격이 크게 저감되도록 개선된 더블 위시본식 현가 장치에 관한 것이다.The present invention relates to a suspension device for cushioning vibrations or shocks transmitted from the road surface to the vehicle body when the vehicle is driven, and more particularly, to a double wishbone suspension device improved to significantly reduce the shock transmitted from the damper to the lower arm. It is about.

자동차가 주핼할 때 노면으로부터 발생되는 진동이나 충격이 차체로 전달하는 것을 방지하여 승차감을 향상시키기 위한 현가 장치에는 여러 가지 형식이 있다. 이중에서 앞바퀴의 독립 현가 장치로 주로 사용되는 더블 위시본식 현가 장치가 도 1에 도시되어 있다.There are various types of suspension devices for improving the riding comfort by preventing the vibrations or shocks generated from the road surface to be transmitted to the vehicle body when the vehicle moves. The double wishbone suspension, which is mainly used as an independent suspension of the front wheel, is shown in FIG. 1.

도시된 바와 같이, 더블 위시본식 현가 장치는 대략 "V" 형상을 가지는 상부 암(12)과 하부 암(14)이 각각 바퀴의 회전축선 위와 아래에서 바퀴를 지지하는 조향 너클(16)을 차체(2)와 연결하고 있는 구성을 가진다.As shown, the double wishbone suspension includes a steering knuckle 16 having an upper arm 12 and a lower arm 14 each having an approximately " V " shape supporting the wheels above and below the axis of rotation of the wheels. 2) has a configuration connected to.

상부 암(12)은 한 쌍의 상부 암 브라켓(24)에 각각 그 양단이 힌지 결합된다. 한 쌍의 상부 암 브라켓(24)은 타워 브라켓(26)에 의해 서로 연결되고, 한 쌍의 상부 암 브라켓(24)과 타워 브라켓(26)이 차체(2)에 고정되는 것에 의해 상부 암(12)은 차체(2)에 연결된다.The upper arm 12 is hinged at both ends of the pair of upper arm brackets 24, respectively. The pair of upper arm brackets 24 are connected to each other by a tower bracket 26, and the upper arm 12 is fixed by fixing the pair of upper arm brackets 24 and the tower brackets 26 to the vehicle body 2. Is connected to the vehicle body 2.

그리고, 노면으로부터 전달되는 진동과 충격은 그 하단이 하부 암(14)에 연결되고 상단은 차체에 연결되도록 대략 상하 방향으로 세워진 댐퍼(18)와 댐퍼(18)를 둘러싸는 코일 스프링(20)에 의해 저감된다. 댐퍼(18)는 하부 암(14)에 형성된 연결공을 통해서 또는 하부 암(14)의 상면에 설치된 브라켓을 통해 하부 암에 연결된다.In addition, the vibration and shock transmitted from the road surface are applied to the coil spring 20 surrounding the damper 18 and the damper 18, which are erected in the up and down direction so that the lower end is connected to the lower arm 14 and the upper end is connected to the vehicle body. Is reduced. The damper 18 is connected to the lower arm through a connection hole formed in the lower arm 14 or through a bracket provided on the upper surface of the lower arm 14.

또한, 노면의 굴곡 등에 의해 좌우 양측 바퀴가 따로따로 상하 운동하는 경우, 차체(2)를 가로질러 그 양단이 양쪽 하부 암(14)에 연결된 스태빌라이저 바(22)에 의해 차체의 롤링은 흡수된다.In addition, when the left and right wheels move up and down separately due to the curvature of the road surface, the rolling of the vehicle body is absorbed by the stabilizer bars 22 connected to both lower arms 14 across the vehicle body 2.

이러한 구성을 가지는 현가 장치에 있어서, 바퀴로부터 현가 장치로 전달되는 힘들 중 특히 수직력이 댐퍼(18)에 의해 감쇠된다. 즉, 댐퍼(18)는 소위 범퍼(bump)라 불리는 아래에서 위로의 변위 발생시 속도에 비례하는 감쇠력을 발휘한다. 따라서, 댐퍼(18)가 하부 암(14)과 연결되는 부분에는 범퍼력에 대한 반력인하방으로의 힘이 주로 작용된다.In the suspension device having such a configuration, in particular the vertical force among the forces transmitted from the wheel to the suspension device is attenuated by the damper 18. That is, the damper 18 exerts a damping force proportional to the speed at the time of displacement from bottom to top, which is called a bumper. Therefore, the force downward acts on the reaction force against the bumper force is mainly applied to the portion where the damper 18 is connected to the lower arm 14.

그러나, 상기와 같은 종래의 현가 장치는, 댐퍼(18)와 하부 암(14)의 연결 부위가 하방으로 작용하는 댐퍼(18)의 반력을 충분히 지지하지 못하여 하부 암(14)이 파손될 우려가 높다. 즉, 하부 암(14)에 직접 연결공을 형성하는 경우, 하부 암(14) 중 연결공의 하부에 해당되는 부분만이 댐퍼(18)의 수직 반력을 지지하므로, 하부 암(14) 전체의 댐퍼(18)에 대한지지 효율이 떨어지게 된다.However, in the conventional suspension device as described above, there is a high possibility that the lower arm 14 may be damaged because the damper 18 does not sufficiently support the reaction force of the damper 18 in which the connection portion between the damper 18 and the lower arm 14 acts downward. . That is, when the direct hole is formed in the lower arm 14, only a portion of the lower arm 14 corresponding to the lower portion of the lower hole 14 supports the vertical reaction force of the damper 18, so that The support efficiency for the damper 18 is lowered.

또한, 하부 암(14)의 상면에 연결 브라켓이 설치된 경우에서도 댐퍼(18)의 수직 반력이 과다할 경우 하부 암(14)이 파손될 우려가 높으며, 또한 연결 부위의 윤활이 부족할 경우 회전으로 인한 마찰이 진동 및 소음으로 전환되어 하부 암(14)을 통해서 차체(2)로 전달되는 문제가 발생될 수 있다.In addition, even when the connecting bracket is installed on the upper surface of the lower arm 14, when the vertical reaction force of the damper 18 is excessive, there is a high possibility that the lower arm 14 is broken, and when the lubrication of the connecting portion is insufficient, friction due to rotation This vibration and noise may be converted into a problem that is transmitted to the vehicle body 2 through the lower arm (14).

본 발명은 상기와 같은 점을 감안하여 안출된 것으로, 댐퍼의 수직 반력에 대한 지지 강성이 우수한 현가 장치를 제공하는데 그 목적이 있다.The present invention has been made in view of the above, and an object thereof is to provide a suspension device excellent in supporting rigidity against a vertical reaction force of a damper.

도 1은 종래의 더블 위시본식 현가 장치를 도시한 측면도.1 is a side view showing a conventional double wishbone suspension device.

도 2는 본 발명의 일 실시예에 따른 더블 위시본식 현가 장치를 도시한 측면도.Figure 2 is a side view showing a double wishbone suspension system according to an embodiment of the present invention.

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

12 : 상부 암14 : 하부 암12: upper arm 14: lower arm

15 : 브라켓16 : 조향 너클15 Bracket 16: Steering Knuckle

18 : 댐퍼20 : 코일 스프링18 damper 20 coil spring

상기와 같은 목적은, 바퀴가 장착되는 조향 너클과, 조향 너클에 장착된 바퀴의 회전축선 상, 하측에서 각각 조향 너클을 차체에 연결하는 상, 하부 암과, 그 하단은 하부 암의 상면에 설치된 브라켓을 통해 하부 암에 연결되고, 상단은 차체에 고정되는 댐퍼, 및 댐퍼를 둘러싸도록 설치되어, 댐퍼와 함게 노면으로부터의 충격 및 진동을 흡수하는 코일 스프링을 포함하는 자동차용 더블 위시본식 현가 장치에 있어서, 상기 하부 암은 차체측과 조향 너클측 사이의 단면이 비대칭을 이루도록 그 상부가 계단식으로 형성되며, 인접한 두 단은 경사면에 의해 연결되는 것을 특징으로 하는 본 발명에 따른 자동차용 더블 위시본식 현가 장치에 의해 달성된다.The above object is, the steering knuckle to which the wheel is mounted, the upper and lower arms connecting the steering knuckle to the vehicle body on the rotation axis of the wheel mounted on the steering knuckle, the lower side, and the lower end thereof is installed on the upper surface of the lower arm It is connected to the lower arm through the bracket, the upper end is mounted to the damper fixed to the vehicle body, and is installed to surround the damper, the double wishbone suspension system for automobiles including a coil spring to absorb the shock and vibration from the road surface with the damper In the lower arm, the upper part is formed in a stepped manner so that the cross section between the vehicle body side and the steering knuckle side is asymmetrical, and two adjacent ends are connected by an inclined surface to the vehicle double wishbone suspension according to the present invention. Achieved by the device.

바람직하게는, 댐퍼와 하부 암을 연결하는 브라켓은 하부 암의 경사면에 설치된다.Preferably, the bracket connecting the damper and the lower arm is installed on the inclined surface of the lower arm.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

도 2는 본 발명의 일 실시예에 따른 더블 위시본식 현가 장치를 도시한다. 본 실시예의 설명에 있어서, 종래와 동일한 구성에 대해서는 동일한 참조 부호를 사용한다.Figure 2 shows a double wishbone suspension device according to an embodiment of the present invention. In the description of this embodiment, the same reference numerals are used for the same configurations as in the prior art.

도시된 바와 같이, 본 발명의 일 실시예에 따른 더블 위시본식 현가 장치는, 조향 너클(16)과, 상부 암(12)과, 하부 암(14)과, 댐퍼(18)와, 코일 스프링(20)과, 스태빌라이저 바(22)를 포함하고 있다.As shown, the double wishbone suspension according to an embodiment of the present invention, the steering knuckle 16, the upper arm 12, the lower arm 14, the damper 18, the coil spring ( 20 and a stabilizer bar 22.

바퀴가 장착되는 조향 너클(16)은 대략 "V" 형상을 가지는 상부 암(12)과 하부 암(14)에 의해 차체와 연결된다.The steering knuckle 16, on which the wheels are mounted, is connected to the vehicle body by an upper arm 12 and a lower arm 14 having an approximately "V" shape.

하부 암(14)은 차체에 연결되는 일단과 조향 너클(16)에 연결되는 중앙부 사이의 단면 형상이 비대칭으로 형성되어 있다. 구체적으로는, 그 상부가 단계적으로 높이가 달라지는 계단 형상으로 이루어져 있다. 또한, 각 단들을 연결하는 면은 경사면으로 이루어져 있다.The lower arm 14 has an asymmetrical cross-sectional shape between one end connected to the vehicle body and the center part connected to the steering knuckle 16. Specifically, the upper portion has a step shape in which the height varies in stages. In addition, the surface connecting each stage is composed of an inclined surface.

이와 같이, 하부 암(14)의 단면 형상이 비대칭으로 이루어질 경우, 압축-인장 응력이 감소되며(Manner of Constant Strength), 특히 인장 응력이 크게 감소된다.As such, when the cross-sectional shape of the lower arm 14 is made asymmetric, the compressive-tensile stress is reduced (Manner of Constant Strength), in particular the tensile stress is greatly reduced.

한편, 댐퍼(18)는 그 하단이 하부 암(14)의 상면에 설치된 브라켓(15)을 통해 하부 암(14)과 연결되며, 그 상단은 차체(2)에 연결되도록 세워져 있다. 댐퍼(18)의 상부는 코일 스프링(20)이 둘러싸고 있다. 댐퍼(18)의 하단을 하부 암(14)과 연결하는 브라켓(15)은 하부 암(14)의 경사면에 설치되어 있다.On the other hand, the damper 18 is lower end is connected to the lower arm 14 through a bracket 15 provided on the upper surface of the lower arm 14, the upper end is erected to be connected to the vehicle body (2). The upper portion of the damper 18 is surrounded by a coil spring 20. The bracket 15 connecting the lower end of the damper 18 with the lower arm 14 is provided on the inclined surface of the lower arm 14.

이와 같이, 브라켓(15)이 하부 암(14)의 경사면에 설치되면, 브라켓(15)에는 댐퍼(18)로부터 전달되는 수직 반력에 브라켓(14)이 놓인 경사면과 수직 반력 사이의 각도의 사인값을 곱한 값만큼 저감된 힘만이 작용되므로, 브라켓(14)에 작용되는 힘은 저감된다.Thus, when the bracket 15 is installed on the inclined surface of the lower arm 14, the sine of the angle between the inclined surface on which the bracket 14 is placed and the vertical reaction force on the vertical reaction force transmitted from the damper 18 to the bracket 15 Since only the force reduced by the value multiplied is applied, the force applied to the bracket 14 is reduced.

상기된 바와 같은 본 발명에 따른 더블 위시본식 현가 장치는 하부 암의 단면 형상을 비대칭으로 형성하고, 댐퍼와 하부 암을 연결하는 브라켓을 경사면에 설치함으로써, 댐퍼로부터 하부 암에 작용되는 수직 반력에 대한 강성이 크게 향상되는 장점이 있다.Double wishbone suspension according to the present invention as described above forms a cross-sectional shape of the lower arm asymmetrical, and by installing a bracket connecting the damper and the lower arm on the inclined surface, the vertical reaction force acting on the lower arm from the damper Stiffness has the advantage of greatly improved.

이상에서는, 본 발명을 특정의 바람직한 실시예에 대해서 도시하고 설명하였지만, 본 발명은 상술한 실시예에만 한정되는 것은 아니며, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 이하의 특허청구범위에 기재된 본 발명의 기술적 사상의 요지를 벗어남이 없이 얼마든지 다양하게 변경실시할 수 있을 것이다.In the above, the present invention has been illustrated and described with respect to specific preferred embodiments, but the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains may claim Various modifications can be made without departing from the spirit of the technical idea of the present invention.

Claims (2)

바퀴가 장착되는 조향 너클과, 상기 조향 너클에 장착된 바퀴의 회전축선 상, 하측에서 각각 상기 조향 너클을 차체에 연결하는 상, 하부 암과, 그 하단은 상기 하부 암의 상면에 설치된 브라켓을 통해 상기 하부 암에 연결되고, 상단은 차체에 고정되는 댐퍼, 및 상기 댐퍼를 둘러싸도록 설치되어, 상기 댐퍼와 함게 노면으로부터의 충격 및 진동을 흡수하는 코일 스프링을 포함하는 자동차용 더블 위시본식 현가 장치에 있어서,A steering knuckle on which wheels are mounted, an upper and lower arms connecting the steering knuckles to the vehicle body on the lower and lower axes of rotation of the wheels mounted on the steering knuckle, respectively, and a lower end thereof through a bracket installed on an upper surface of the lower arm. A double wishbone suspension system for automobiles, comprising: a damper connected to the lower arm and having an upper end fixed to a vehicle body; and a coil spring installed to surround the damper and absorbing shock and vibration from a road surface together with the damper. In 상기 하부 암은 차체측과 조향 너클측 사이의 단면이 비대칭을 이루도록 그 상부가 계단식으로 형성되며, 인접한 두 단은 경사면에 의해 연결되는 것을 특징으로 하는 자동차용 더블 위시본식 현가 장치.The lower arm is formed in a stepped upper portion so that the cross section between the vehicle body side and the steering knuckle side is asymmetrical, two adjacent ends are connected to the slope by the vehicle. 제 1 항에 있어서, 댐퍼와 하부 암을 연결하는 상기 브라켓은 상기 하부 암의 경사면에 설치되는 것을 특징으로 하는 자동차용 더블 위시본식 현가 장치.The double wishbone suspension system for automobiles according to claim 1, wherein the bracket connecting the damper and the lower arm is installed on an inclined surface of the lower arm.
KR10-2001-0071887A 2001-11-19 2001-11-19 Double wishbone type suspension KR100475600B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100966939B1 (en) * 2007-11-21 2010-06-30 구례군 case device having an animal and plant growing function
KR100986747B1 (en) * 2008-06-17 2010-10-12 경상북도예천군 A cage for butterfly larva
KR101010759B1 (en) * 2009-01-09 2011-01-25 한국수력원자력 주식회사 Development of cage for the cultivation of fruit flies
KR101045547B1 (en) * 2009-12-14 2011-06-30 신일순 Container for breeding drosophila
CN114179584A (en) * 2021-11-11 2022-03-15 盐城工学院 Adjustable automobile electromagnetic suspension with high strength

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JPH05162520A (en) * 1991-12-10 1993-06-29 Mazda Motor Corp Suspension arm for vehicle
JP3737837B2 (en) * 1994-06-24 2006-01-25 トヨタ自動車株式会社 Vehicle suspension arm
JPH0872517A (en) * 1994-09-05 1996-03-19 Isuzu Motors Ltd Suspension
KR100313801B1 (en) * 1999-01-06 2001-11-15 이계안 Rear suspension system for vehicles

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100966939B1 (en) * 2007-11-21 2010-06-30 구례군 case device having an animal and plant growing function
KR100986747B1 (en) * 2008-06-17 2010-10-12 경상북도예천군 A cage for butterfly larva
KR101010759B1 (en) * 2009-01-09 2011-01-25 한국수력원자력 주식회사 Development of cage for the cultivation of fruit flies
KR101045547B1 (en) * 2009-12-14 2011-06-30 신일순 Container for breeding drosophila
CN114179584A (en) * 2021-11-11 2022-03-15 盐城工学院 Adjustable automobile electromagnetic suspension with high strength
CN114179584B (en) * 2021-11-11 2023-08-22 盐城工学院 High-strength adjustable automobile electromagnetic suspension

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