KR20080024601A - A bump stopper for a vehicle's suspension system - Google Patents

A bump stopper for a vehicle's suspension system Download PDF

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Publication number
KR20080024601A
KR20080024601A KR1020060088912A KR20060088912A KR20080024601A KR 20080024601 A KR20080024601 A KR 20080024601A KR 1020060088912 A KR1020060088912 A KR 1020060088912A KR 20060088912 A KR20060088912 A KR 20060088912A KR 20080024601 A KR20080024601 A KR 20080024601A
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KR
South Korea
Prior art keywords
bump stopper
shock absorber
vehicle
piston rod
suspension system
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KR1020060088912A
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Korean (ko)
Inventor
정일호
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현대자동차주식회사
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Priority to KR1020060088912A priority Critical patent/KR20080024601A/en
Publication of KR20080024601A publication Critical patent/KR20080024601A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/04—Buffer means for limiting movement of arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • F16F9/303—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium the damper being of the telescopic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/026—Springs wound- or coil-like

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

Abstract

A bump stopper for a vehicle suspension system is provided to prevent degradation due to a side force applied to a cylinder by eccentrically coupling the bump stopper to a piston rod. A bump stopper(130) for a vehicle suspension system comprises a coupling hole(131). The vehicle suspension system is provided such that the center line of a shock absorber(110) is inclined with respect to the center line of a coil spring(120) at a predetermined angle. The coil spring is installed between an upper spring sheet(150) and a lower spring sheet(140). The bump stopper in which the coupling hole is eccentrically formed is coupled to a piston rod(111) of the shock absorber.

Description

자동차의 현가장치용 범프스토퍼{a bump stopper for a vehicle's suspension system} Bump stopper for a vehicle's suspension system

도 1은 일반적인 자동차용 현가장치를 도시한 개략단면도1 is a schematic cross-sectional view showing a typical vehicle suspension device

도 2는 일반적인 현가장치에서 작용하는 힘을 도시한 벡터도Figure 2 is a vector diagram showing the force acting on the typical suspension

도 3은 도 2에 따른 힘 벡터가 쇽업소버에 작용하는 상태를 도시한 개략도3 is a schematic view showing a state in which the force vector according to FIG. 2 acts on the shock absorber;

도 4는 종래 현가장치용 범프스토퍼의 설치상태를 보인 단면도Figure 4 is a cross-sectional view showing the installation state of the bumper for conventional suspension device

도 5는 종래 현가장치용 범프스토퍼를 보인 평단면도5 is a plan sectional view showing a bump stopper for a conventional suspension device

도 6은 본 발며인 현가장치용 범프스토퍼를 보인 평단면도Figure 6 is a plan sectional view showing the bump stopper for the present foot suspension device

도 7은 본 발명인 현가장치용 범프스토퍼의 설치상태를 보인 정단면도7 is a front sectional view showing the installation state of the bumper for suspension device of the present invention;

도 8은 본 발명인 현가장치용 범프스토퍼가 작동된 상태를 보인 정단면도 8 is a front sectional view showing a state in which the bump stopper for the present invention is operated

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

110 : 쇽업소버 111 : 피스톤로드110: shock absorber 111: piston rod

120 : 코일스프링 130 : 범프스토퍼120: coil spring 130: bump stopper

131 : 결합공 140 : 하부스프링시트131: coupling hole 140: lower spring seat

150 : 상부스프링시트150: upper spring sheet

본 발명은 자동차의 현가장치용 범프스토퍼에 관한 것으로서, 더욱더 상세하게는 쇽업소버가 작동할 시 발생하는 모멘트에 의해 사이드포스가 저감되도로 하는 자동차의 현가장치용 범프스토퍼에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bump stopper for a suspension device for a vehicle, and more particularly, to a bump stopper for a suspension device for a vehicle in which side force is reduced by a moment generated when the shock absorber is operated.

일반적으로 현가장치는 차축과 차체를 연결하여 주행할 때 차축이 노면에서 받는 진동이나 충격을 차체에 직접 전달되지 않도록 하여 차체나 화물의 손상을 방지하고 승차감을 좋게 하는 장치이다.In general, the suspension device is a device that prevents damage to the vehicle body or cargo and improves the riding comfort by preventing the axle from being directly transmitted to the vehicle body when the axle is driven from the road surface when driving by connecting the axle and the vehicle body.

상기 현가장치중에서 맥퍼슨 타입은 도 1에 도시하고 있는 바와 같이 휠에 설치된 타이어(200)와, 상기 휠의 너클(미도시)에 일단이 연결되고 타단이 차체(300)에 회전가능하게 설치된 로워암(400)과, 상기 로워암(400)에 하단이 고정됨과 아울러 상단이 차체(300)에 고정된 스트러트어셈블리(100)로 구성되어 있다.Among the suspension devices, the McPherson type has a lower arm, one end of which is connected to a tire 200 installed on a wheel and a knuckle (not shown) of the wheel, and the other end of which is rotatably mounted on the vehicle body 300, as shown in FIG. The lower arm is fixed to the lower arm 400 and the upper arm is composed of the strut assembly 100 fixed to the vehicle body 300.

한편, 상기 스트러트어셈블리(100)는 도 4 및 도 5에 도시하고 있는 바와 같이, 로워암(400)과 차체(300)에 상단부와 하단부가 각각 고정된 쇽업소버(110)와, 상기 쇽업소버(110)에 고정된 로워스프링시트(140)와 차체(300)에 고정된 상부스프링시트(150) 사이에 설치되는 코일스프링(120)과, 상기 쇽업소버(110)의 피스톤로드(111)에 중심부가 끼움 결합되는 범프스토퍼(130)로 구성되어 있다.Meanwhile, as shown in FIGS. 4 and 5, the strut assembly 100 includes a shock absorber 110 having upper and lower ends fixed to the lower arm 400 and the vehicle body 300, respectively, and the shock absorber ( The coil spring 120 is installed between the lower spring seat 140 fixed to 110 and the upper spring seat 150 fixed to the vehicle body 300, and a central portion of the piston rod 111 of the shock absorber 110. Composed of the bump stopper 130 is fitted.

상기한 바와 같은 맥퍼슨 타입의 현가장치에 작용하는 힘은, 차량의 중량이 스트러트어셈블리(100)의 상단에 인가되는 하중F와, 상기 하중 F에 따라 타이 어(200)가 노면과 접촉되는 부분에서 작용하는 반력FA와, 상기 하중에 따라 로워암(400) 차체연결 부분에 형성되는 반력FL로 이루어진다.The force acting on the suspension of the McPherson type as described above is a load F that the weight of the vehicle is applied to the upper end of the strut assembly 100, and the tire 200 is in contact with the road surface according to the load F. The reaction force FA acts, and the reaction force FL formed on the lower arm 400 body connection portion according to the load.

여기서 실질적으로 차량에 인가되는 쇽업소버(110)의 중심선과 차체로부터 휠 중심(로워암이 연결된 부분)으로 연장된 선 사이에는 오차각이 형성되는 바, 상기 현가장치에 작용하는 힘에 따른 벡터는 도 2와 도 3에 도시하고 있는 바와 같이 형성된다.Here, an error angle is formed between the center line of the shock absorber 110 applied to the vehicle and the line extending from the vehicle body to the center of the wheel (the lower arm is connected), and the vector according to the force acting on the suspension device It is formed as shown in FIG. 2 and FIG.

즉, 상기 하중F와 반력FA에 따른 힘 벡터가 F로 나타날 때, 오차각에 따른 힘 FQ가 스트러트어셈블리 중심선C에 직교한 방향으로 작용하게 되는 바, 이는 도 3에 도시하고 있는 바와 같이 쇽업소버(110)의 피스톤로드(111) 상단에 작용하게되고, 상기 힘 FQ에 대한 반력 FS, FK가 쇽업소버(110)에 형성된다.That is, when the force vector according to the load F and the reaction force FA is represented by F, the force FQ according to the error angle acts in a direction orthogonal to the strut assembly centerline C, which is illustrated in FIG. 3. It acts on the piston rod 111 top of the 110, the reaction force FS, FK against the force FQ is formed in the shock absorber (110).

상기 힘 FQ, FK, FS는 쇽업소버()의 운동시 피스톤로드(111) 사이에 마찰을 발생시키고, 상기 마찰력이 진동 감쇄효과 및 횡력 저항 강성을 저하시키게 되는 바, 이를 감소시키기 위하여 쇽업소버(110)의 중심선과 차체(300)로부터 휠 중심(로워암이 연결되는 부분)으로 연장된 선 사이에 각도를 갖도록 구성하게 된다.The forces FQ, FK, and FS generate friction between the piston rods 111 during the movement of the shock absorber, and the frictional force lowers the vibration damping effect and the lateral stiffness resistance. It is configured to have an angle between the center line of the 110 and the line extending from the vehicle body 300 to the wheel center (part where the lower arm is connected).

즉, 상부스프링시트(150)와 하부스프링시트(140)를 쇽업소버(110)에 고정시킬 때, 상기 각도를 갖도록 용접시킴으로써, 코일스프링(120)이 소정각도를 갖도록 하는 것이다.That is, when fixing the upper spring sheet 150 and the lower spring sheet 140 to the shock absorber 110, the coil spring 120 has a predetermined angle by welding to have the angle.

그러나 상기와 같이 코일스프링(120)과 쇽업소버(110) 사이의 각도를 형성할 때 쇽업소버(110)의 압축/팽창 동작에 간섭되지 않도록 하여야 함은 물론, 차체와 현가장치 사이의 구성상 간섭이 발생하지 않도록 하여야 하기 때문에 정확하게 각 도를 유지하기가 어려운 문제점이 있다. However, when forming the angle between the coil spring 120 and the shock absorber 110 as described above, it should not interfere with the compression / expansion operation of the shock absorber 110, as well as interference between the vehicle body and the suspension device. It is difficult to accurately maintain the angle because it should not occur.

한편, 상기와 같이 코일스프링(120)과 쇽업소버(110) 사이의 각도가 최적으로 설치되지 않은 경우에는 타이어(200)를 통해 차체로 전달되는 외부의 충격에 의해 쇽업소버(110)의 실린더(112)가 급격히 신축되면, 상기 쇽업소버(110)의 실린더(112) 상부면 중앙부에 피스톤로드(111)에 끼움 결합되어 있는 범프스토퍼(130)에 저면이 접촉되면서 사이드포스를 증대시키게 된다.On the other hand, when the angle between the coil spring 120 and the shock absorber 110 is not optimally installed as described above, the cylinder of the shock absorber 110 by an external shock transmitted to the vehicle body through the tire 200 ( When the 112 is rapidly expanded and contracted, the bottom surface is in contact with the bump stopper 130 which is fitted to the piston rod 111 at the center of the upper surface of the cylinder 112 of the shock absorber 110 to increase the side force.

상기 실린더(112)가 사이드포스를 받게되면 쇽업소버(110) 작동시 심한 소음을 유발하게 됨은, 자주 반복될 경우에는 내구성에 치명적인 악영향을 주어 수명 및 성능을 약화시키는 등의 문제점들이 있었다.When the cylinder 112 is subjected to the side force, causing severe noise during operation of the shock absorber 110, there are problems such as to reduce the life and performance by giving a bad effect on the durability if repeated frequently.

이에 본 발명은 상술된 문제점들을 해결하기 위해 발명된 것으로서, 본 발명의 목적은 쇽업소버의 피스톤로드에 끼움 결합되는 범프스토퍼를 편심되게 결합시켜, 범프시 범프스토퍼의 편심으로 으로 인하여 실린더에 편심된 쪽에는 작은 힘이 반대쪽은 큰힘이 작용하는 모멘트가 유발되면서 사이드포스가 저감되도록 하는 자동차의 현가장치용 범프스토퍼를 제동하는 데 있다.Accordingly, the present invention has been invented to solve the above-mentioned problems, an object of the present invention is to eccentrically coupled bump stopper fitted to the piston rod of the shock absorber, eccentric to the cylinder due to the eccentric bump bumper during bumping On the side, a small force is on the other side, while a large force acts on the brake to stop the bumper of the vehicle's suspension to reduce the side force.

이러한 본 발명의 목적은, 쇽업소버(110)의 중심선과 코일스프링(120)의 중심선이 소정각도 기울어진 상태로 설치되고, 상기 코일스프링(120)이 상부스프링시 트(150)와 하부스프링시트(140) 사이에 설치되며, 상기 쇽업소버(110)의 피스톤로드(111)에는 결합공(131)이 형성된 범프스토퍼(130)가 끼움 결합되는 것에 있어서, 상기 범프스토퍼(130)에 형성된 결합공(131)이 일측으로 편심되게 형성되어 피스톤로드(111)에 끼움 결합되는 것에 의해 달성된다.The object of the present invention, the center line of the shock absorber 110 and the center line of the coil spring 120 is installed with a predetermined angle inclined, the coil spring 120 is the upper spring sheet 150 and the lower spring seat Is installed between the 140, the bump rodper 130 having a coupling hole 131 is fitted to the piston rod 111 of the shock absorber 110, the coupling hole formed in the bump stopper 130 131 is achieved by being eccentrically formed to one side and fitted to the piston rod 111.

이하, 첨부된 도면에 의하여 본 발명의 그 기술적 구성을 상세히 설명하면 다음과 같다. Hereinafter, the technical configuration of the present invention with reference to the accompanying drawings in detail as follows.

도 6은 본 발며인 현가장치용 범프스토퍼를 보인 평단면도 이고, 도 7은 본 발명인 현가장치용 범프스토퍼의 설치상태를 보인 정단면도 이며, 도 8은 본 발명인 현가장치용 범프스토퍼가 작동된 상태를 보인 정단면도 이다.Figure 6 is a cross-sectional plan view showing the bumper suspension suspension device according to the present invention, Figure 7 is a front sectional view showing an installation state of the bumper suspension device for the present invention, Figure 8 is a state in which the bumper suspension device for the present invention is operated Is a cross-sectional view showing.

본 발명인 자동차의 현가장치용 범프스토퍼는 도 6과 도 7 및 도 8에 도시하고 있는 바와 같이, 쇽업소버(110)의 실린더(112) 내외부로 인입출이 이루어지는 피스톤로드(111)에 결합공(131)이 편심되게 형성되어 있는 범프스토퍼(130)가 끼움 결합된다.As illustrated in FIGS. 6, 7, and 8, a bump stopper for a suspension device of a vehicle according to the present invention is coupled to a piston rod 111 that is drawn in and out of a cylinder 112 of a shock absorber 110. The bump stopper 130 is formed to be eccentrically coupled to each other.

이때, 상기 범프스토퍼(130)는 차체(300)와 쇽업소버(110)의 실린더(112) 사이에 설치되어, 차량을 운행중 타이어를 통해 차체로 전달되는 외부의 충격에 의해 쇽업소버(110)의 실린더(112)가 급격히 신축되면, 상기 쇽업소버(110)의 실린더(112) 상부면에 피스톤로드(111)에 끼움 결합되어 있는 범프스토퍼(130)의 저면이 접촉되면서 충격을 흡수하게 된다.At this time, the bump stopper 130 is installed between the vehicle body 300 and the cylinder 112 of the shock absorber 110, the shock absorber 110 of the shock absorber 110 by the external shock transmitted to the vehicle body through the tire while driving the vehicle. When the cylinder 112 is rapidly expanded and contracted, the bottom surface of the bump stopper 130, which is fitted to the piston rod 111 to the upper surface of the cylinder 112 of the shock absorber 110 is in contact with the shock absorber.

이와 같이 구성되는 본 발명은 차량을 운행중 타이어를 통해 차체로 전달되는 외부의 충격에 의해 쇽업소버(110)의 실린더(112)가 급격히 신축되면, 상기 쇽 업소버(110)의 실린더(112) 상부면에 피스톤로드(111)에 끼움 결합되어 있는 범프스토퍼(130)의 저면이 접촉되면서 충격을 흡수시 상기 쇽업소버(110)의 실린더(112)에 하부방향으로 모멘트가 유발되어지게 된다.According to the present invention configured as described above, when the cylinder 112 of the shock absorber 110 is rapidly expanded and contracted by an external shock transmitted to the vehicle body through a tire while the vehicle is in operation, the upper surface of the cylinder 112 of the shock absorber 110 is expanded. When the bottom surface of the bump stopper 130 which is fitted to the piston rod 111 is in contact with each other, the moment is induced in the downward direction to the cylinder 112 of the shock absorber 110 when the shock is absorbed.

이때, 상기 쇽업소버(110)의 피스톤로드(111)에 편심되게 형성된 결합공(131)이 끼움 결합되는 범프스토퍼(130)에 의해, 범프시 범프스토퍼(130)의 편심으로 으로 인하여 실린더(112)에 편심된 쪽에는 작은 힘이 반대쪽은 큰힘이 작용하는 모멘트가 유발되면서 사이드포스를 저감시켜 주게 된다.At this time, by the bump stopper 130 to which the coupling hole 131 eccentrically formed in the piston rod 111 of the shock absorber 110 is fitted, the cylinder 112 due to the eccentricity of the bump stopper 130 during bumping. On the eccentric side, a small force is induced on the opposite side, and a large force acts on the side to reduce the side force.

상술한 바와 같이, 본 발명에 따른 자동차의 현가장치용 범프스토퍼는 쇽업소버의 피스톤로드에 끼움 결합되는 범프스토퍼를 편심되게 결합시켜, 범프시 범프스토퍼의 편심으로 으로 인하여 실린더에 편심된 쪽에는 작은 힘이 반대쪽은 큰힘이 작용하는 모멘트가 유발되면서 사이드포스가 저감되도록 하는 효과가 있는 매우 유용한 발명이다.As described above, the bump stopper for the suspension device of the vehicle according to the present invention is eccentrically coupled to the bump stopper to be fitted to the piston rod of the shock absorber, small on the side eccentric to the cylinder due to the eccentric of the bump stopper during bump On the other side of the force is a very useful invention that has the effect of reducing the side force while inducing a moment of great force acting.

Claims (1)

쇽업소버(110)의 중심선과 코일스프링(120)의 중심선이 소정각도 기울어진 상태로 설치되고, 상기 코일스프링(120)이 상부스프링시트(150)와 하부스프링시트(140) 사이에 설치되며, 상기 쇽업소버(110)의 피스톤로드(111)에는 결합공(131)이 형성된 범프스토퍼(130)가 끼움 결합되는 것에 있어서, 상기 범프스토퍼(130)에 형성된 결합공(131)이 일측으로 편심되게 형성되어 피스톤로드(111)에 끼움 결합되는 것을 특징으로 하는 자동차의 현가장치용 범프스토퍼.The center line of the shock absorber 110 and the center line of the coil spring 120 are inclined at a predetermined angle, and the coil spring 120 is installed between the upper spring sheet 150 and the lower spring sheet 140. When the bump stopper 130 having the coupling hole 131 is fitted to the piston rod 111 of the shock absorber 110, the coupling hole 131 formed in the bump stopper 130 may be eccentric to one side. Bump stopper for suspension of the vehicle, characterized in that the fitting is fitted to the piston rod (111).
KR1020060088912A 2006-09-14 2006-09-14 A bump stopper for a vehicle's suspension system KR20080024601A (en)

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