KR20040034159A - a suspension system of a car - Google Patents

a suspension system of a car Download PDF

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Publication number
KR20040034159A
KR20040034159A KR1020020064241A KR20020064241A KR20040034159A KR 20040034159 A KR20040034159 A KR 20040034159A KR 1020020064241 A KR1020020064241 A KR 1020020064241A KR 20020064241 A KR20020064241 A KR 20020064241A KR 20040034159 A KR20040034159 A KR 20040034159A
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KR
South Korea
Prior art keywords
load
vehicle
leaf springs
suspension
shackles
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KR1020020064241A
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Korean (ko)
Inventor
고봉확
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현대자동차주식회사
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Priority to KR1020020064241A priority Critical patent/KR20040034159A/en
Publication of KR20040034159A publication Critical patent/KR20040034159A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/121—Mounting of leaf springs
    • 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
    • B60G2204/422—Links for mounting suspension elements
    • 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
    • B60G2206/012—Hollow or tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B60G2400/61—Load distribution
    • 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
    • B60G2800/21—Traction, slip, skid or slide control
    • B60G2800/214—Traction, slip, skid or slide control by varying the load distribution

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

Abstract

PURPOSE: A suspension of a vehicle is provided to improve riding comfort by dispersing load transmitted to a portion of a vehicle body in traveling on an uneven road by using hydraulic pressure and to expand the life span of parts by reducing the durability charge for load. CONSTITUTION: A suspension of a vehicle is composed of first and second leaf springs(110,120) installed to both sides of front and rear sides of a vehicle body to buffer load transmitted through vehicle wheels and a load dispersing device for converting load transmitted to one of the first and second leaf springs into hydraulic power and transmitting the hydraulic power to the other leaf spring. The load dispersing device comprises first and second shackles(210,220) rotatively combined to ends of the first and second leaf springs, respectively; first and second connecting links(310,320) interlocked by rotary power of the first and second shackles, respectively; first and second cylinders(410,420) filled with actuating fluid and formed with pistons(415,425) connected to the ends of the first and second connecting links to interlock; and first and second connecting tubes(510,520) connected to communicate one and other sides of the cylinders.

Description

차량의 현가장치{a suspension system of a car}Suspension of a vehicle {a suspension system of a car}

본 발명은 차량의 현가장치에 관한 것으로, 특히 차체의 전,후방에 각각 설치되는 판스프링중 한 곳에 집중되게 작용하는 하중을 전,후방으로 분산시킴으로써, 부품의 내구성 및 승차감을 증대시킬 수 있도록 그 구조가 개량된차량의 현가장치에 관한 것이다.The present invention relates to a suspension of a vehicle, and in particular, by distributing the load acting on one of the leaf springs installed at the front and rear of the vehicle body to the front and rear, thereby increasing the durability and ride comfort of the parts. The present invention relates to a suspension of a vehicle having an improved structure.

일반적으로, 차량의 현가장치는 구조상으로 일체 차축식과 독립 현가식으로 구분되며, 일체 차축 현가장치는 버스, 화물차등과 같은 대형차량과 승용차에 적용되며, 독립 현가식 현가장치는 차축을 분할하여 양측 차륜이 서로 독립적으로 움직하게 하여 승차감과 안정성이 향상되어 승용차에 주로 적용되고 있다.In general, the suspension of the vehicle is structurally divided into an integral axle type and an independent suspension type, and the integral axle suspension type is applied to large vehicles and passenger cars such as buses and freight cars, and the independent suspension type suspension is divided into two axles. As the wheels move independently of each other, the riding comfort and stability are improved, and it is mainly applied to passenger cars.

그중 차량의 현가장치에서 섀시 스프링은 차체와 차륜 사이에 설치되어 주행중 노면으로부터 전달되는 충격과 차륜의 진동을 흡수하여 차체에 전달되는 것을 차단시킬 수 있도록 한 기계요소로서, 이러한 섀시 스프링은 크게 판스프링과 코일스프링 및 에어스프링등으로 구분된다.In the suspension system of the vehicle, the chassis spring is installed between the vehicle body and the wheels to absorb shocks and vibrations from the road surface while driving and to prevent it from being transmitted to the vehicle body. And coil spring and air spring.

그 판스프링은 길이가 각기 다른 다수개의 띠모양으로 된 스프링강을 구부려서 겹친 상태에서 중심부위에 볼트로 체결되어 일체화된 형태를 가지며, 가격과 정비비용이 저렴하면서 하중에 대한 내구성이 우수하여 주로 대형 차량에 많이 사용되고 있다.The leaf springs are integrally formed by bending bolts on the center in the overlapped state by bending a number of strip-shaped spring steels of different lengths. It is used a lot in.

종래 판스프링이 채용된 화물 차량의 일체 차축식 현가장치는 도 3에 도시된 바와 같이, 전,후 차축(52,54)의 상측으로 판스프링(20,30)이 마련되어 프레임(10)에 "U"볼트등에 의해 연결된다.As illustrated in FIG. 3, the integrated axle suspension system of a freight vehicle employing a leaf spring is provided with leaf springs 20 and 30 above the front and rear axles 52 and 54, so that the frame 10 may be attached to the frame 10. U "bolts are connected.

후륜(44)측 판스프링(30)은 하측의 판스프링(32) 위에 보조 판스프링(34)이 마련되어 복수층을 갖는 구조로 되어 있다.The rear wheel 44 side leaf spring 30 is provided with the auxiliary leaf spring 34 on the lower leaf spring 32, and has a structure which has multiple layers.

그 현가장치는 전방측 차륜(42)을 통해 전달되는 충격 및 하중은 전방측 판스프링(20)을 통해 완충되고, 후방측 차륜(44)에 전달되는 충격 및 하중은 후방측판스프링(30)이 감당하게 되어 있다.The suspension is shock and load transmitted through the front wheel 42 is buffered through the front side leaf spring 20, the impact and load transmitted to the rear wheel 44 is the rear side spring (30) It is to bear.

그런데, 위와 같은 종래 현가장치는 전,후측 차륜에 전달되는 충격이나 하중은 전,후측 판스프링에 의해 독립적으로 완충이 이루어지게 되므로, 요철도로에서의 주행시에는 차체가 크게 흔들리게 되는 문제점이 있다.However, in the conventional suspension as described above, since the shock or load transmitted to the front and rear wheels is independently buffered by the front and rear leaf springs, there is a problem that the vehicle body is greatly shaken when traveling on uneven roads.

즉, 도로상에 요철물이 있을 경우에 전방측 차륜이 지나가게 되면서 차체의 전측부가 상승하고, 이어서 후방측 차륜이 요철물을 넘어가면서 후측부가 상승하게 되어 차체가 두번 흔들리면서 진동하게 되어 승차감을 저하시키게 된다.In other words, when there is an uneven surface on the road, the front wheel passes as the front wheel passes, and the rear wheel ascends the rear wheel as the rear wheel passes over the uneven surface, causing the vehicle body to shake twice and vibrate. Will lower.

본 발명은 상기한 제반문제점을 감안하여 이를 해결하고자 안출된 것으로, 그 목적은 요철 도로에서의 주행중 리바운딩시 차륜을 통해 전달되는 상,하 하중을 분산시켜 승차감 및 부품의 내구성을 증대시킬 수 있도록 그 구조가 개량된 차량의 현가장치를 제공하는 데 있다.The present invention has been made in view of the above-mentioned problems, and its object is to distribute the up and down loads transmitted through the wheels during rebounding while driving on uneven roads so as to increase ride comfort and durability of the parts. It is to provide a suspension of a vehicle having an improved structure.

도 1은 본 발명에 따른 차량의 현가장치를 나타낸 구성도.1 is a block diagram showing a suspension of a vehicle according to the present invention.

도 2는 본 발명의 사용상태도.2 is a state diagram used in the present invention.

도 3은 종래 차량의 현가장치를 나타낸 구성도.Figure 3 is a block diagram showing a suspension of a conventional vehicle.

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

110 : 제 1판스프링120 : 제 2판스프링110: first leaf spring 120: second leaf spring

210 : 제 1섀클210 : 제 2섀클210: first shackle 210: second shackle

310 : 제 1커넥팅 링크320 : 제 2커넥팅 링크310: first connecting link 320: second connecting link

410,420 : 제 1,2실린더410,420: 1st and 2nd cylinder

415,425 : (제 1,2실린더의)피스톤415,425: piston (1, 2 cylinders)

510,520 : 제 1,2연결튜브510,520: 1,2 connection tube

상기한 목적을 달성하기 위한 본 발명은 차체의 전,후방 양측에 설치되어 차륜을 통해 전달되는 하중을 완충시키는 제 1,2판스프링과, 상기 제 1,2판스프링중 하나에 하중이 전달되면 그 하중을 유압력으로 변환시켜 다른 판스프링측으로 전달하는 하중분산수단을 구비하여 된 것을 특징으로 한다.The present invention for achieving the above object is installed on both sides of the front and rear of the vehicle body, the first and second leaf spring to buffer the load transmitted through the wheel, and if the load is transmitted to one of the first and second leaf spring And a load distributing means for converting the load into hydraulic force and transferring the load to another leaf spring.

본 발명의 다른 특징은 상기 하중분산수단이 제 1,2판스프링의 단부에 각각 회전가능하게 결합되는 제 1,2섀클과, 상기 제 1,2섀클의 회전력에 의해 각각 연동되는 제 1,2커넥팅 링크와, 내부에 작동유가 충전되고 상기 제 1,2커넥팅 링크의단부에 연결되어 연동되는 피스톤을 각각 구비하는 제 1,2실린더와, 상기 제 1,2실린더의 일측과 타측을 각각 연통되도록 연결되는 제 1,2연결튜브를 구비하여 된 것이다.Another feature of the present invention is that the first and second shackles in which the load distributing means are rotatably coupled to the ends of the first and second leaf springs, respectively, and the first and second interlocked by the rotational force of the first and second shackles. First and second cylinders each having a connecting link, a piston filled therein, and a piston connected to and connected to the ends of the first and second connecting links, and one side and the other side of the first and second cylinders, respectively. It is provided with a first and second connection tube to be connected.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 차량의 현가장치는, 도 1 및 도 2를 참조, 차체의 전,후방 양측에 적정 거리 이격되도록 설치되며 구동축(미도시됨)에 각각 지지되는 제 1,2판스프링(110,120)과, 그 제 1,2판스프링(110,120)의 단부에 각..각 회전가능하게 설치되는 제 1,2섀클(210,220)과, 그 제 1,2섀클(210,220)의 단부에 각각 연동되도록 설치되는 제 1,2커넥팅 링크(310,320)와, 그 제 1,2커넥팅 링크(310,320)의 이동에 따라 연동되는 피스톤(415,425)을 각각 가지며 내부에 작동유가 충전되는 제 1,2실린더(410,420)와, 그 제 1,2실린더(410,420)의 양측에 각각 연결되도록 설치되는 제 1,2연결튜브(510,520)로 구분된다.The suspension of the vehicle according to the present invention, with reference to Figures 1 and 2, the first and second leaf springs (110, 120) are installed on both sides of the front and rear of the vehicle body to be spaced apart by a suitable distance, respectively supported by a drive shaft (not shown) And the first and second shackles 210 and 220 rotatably installed at the ends of the first and second plate springs 110 and 120 and the end portions of the first and second shackles 210 and 220, respectively. The first and second connecting links 310 and 320 and the first and second cylinders 410 and 420 having pistons 415 and 425 interlocked with the movement of the first and second connecting links 310 and 320, respectively. The first and second cylinders 410 and 420 are divided into first and second connection tubes 510 and 520 which are installed to be connected to both sides.

더 상세히 설명하면, 그 제 1,2섀클(210,220)은 일단부가 제 1,2판스프링(110,120)의 단부와 연동되도록 연결되고, 타단부는 제 1,2커넥팅 링크(310,320)의 단부와 연동되도록 각각 연결되어 있다.In more detail, the first and second shackles 210 and 220 are connected at one end to be interlocked with the ends of the first and second leaf springs 110 and 120, and the other end is connected to the ends of the first and second connecting links 310 and 320. Each is connected as possible.

그리고, 제 1,2커넥팅 링크(310,320)는 제 1,2섀클(210,220)의 단부에 회전가능하게 설치되며, 제 1,2실린더(410,420)의 피스톤(415,425)에 로드 결합되어 제 1,2섀클(210,220)의 회전에 따라 수평 왕복운동되는 구조를 갖는다.The first and second connecting links 310 and 320 are rotatably installed at ends of the first and second shackles 210 and 220, and are rod-coupled to the pistons 415 and 425 of the first and second cylinders 410 and 420. It has a structure that horizontal reciprocating motion according to the rotation of the shackles (210, 220).

또한, 제 1,2실린더(410,420)는 각각의 일측에 제 1연결튜브(510)가 연결되고, 각각의 타측에 제 2연결튜브(520)가 연결되어 내부의 작동유가 순환되는 구조를 갖는다.In addition, the first and second cylinders 410 and 420 have a structure in which the first connection tube 510 is connected to each one side, and the second connection tube 520 is connected to each other side so that the working oil circulates inside.

이러한 구조를 갖는 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention having such a structure is as follows.

평상시 평탄도로 주행시에는 제 1,2판스프링(110,120)에 작용되는 하중이 미약하므로, 미세 진동이나 충격은 자체적으로 각각의 제 1,2판스프링(110,120)이 완충 및 흡수하게 된다.Since the load acting on the first and second plate springs 110 and 120 is weak when the vehicle is normally driven, the first and second plate springs 110 and 120 may be buffered and absorbed by themselves.

그러나, 요철 도로 주행시에는 제 1,2판스프링(110,120)에 큰 하중이 작용하게 되므로, 다음과 같은 과정의 하중 분산과정을 갖게 된다.However, when driving on uneven roads, since a large load acts on the first and second leaf springs 110 and 120, the load distribution process is performed as follows.

우선, 전방측 차륜을 통해 전방 차체에 큰 하중이 작용될 경우, 제 1판스프링(110)의 단부가 구동축의 상측에 지지되어 있으므로, 제 1판스프링(110)이 변형되면서 상측으로 상승하게 되고 그 상승력에 의해 제 1섀클(210)이 반시계방향으로 회전하게 되고, 이어서 제 1커넥팅 링크(310)는 제 1실린더(410)의 피스톤(415)을 도면에 도시된 방향의 좌측에서 우측으로 밀어 이동시키게 된다.First, when a large load is applied to the front vehicle body through the front wheel, the end of the first leaf spring 110 is supported on the upper side of the drive shaft, the first leaf spring 110 is deformed to rise upwards The lifting force causes the first shackle 210 to rotate counterclockwise, and the first connecting link 310 then moves the piston 415 of the first cylinder 410 from left to right in the direction shown in the drawing. Push to move.

이후에, 제 1실린더(410) 내부의 작동유는 제 2연결튜브(520)를 통해 제 2실린더(420)의 우측내부에 유입되고, 이 작동유의 유입력에 의해 제 2실린더(420)의 피스톤(425)이 우측에서 좌측으로 슬라이딩 이동되면서 제 2커넥팅 링크(320)를 밀어 제 2섀클(220)을 시계방향으로 회전시켜 그 하중을 제 2판스프링(120)에 전달시켜 하중을 분산시키게 되는 과정을 갖는다.Thereafter, the working oil inside the first cylinder 410 flows into the right side of the second cylinder 420 through the second connecting tube 520, and the piston of the second cylinder 420 is driven by the inflow force of the working oil. As the 425 slides from the right side to the left side, the second connecting link 320 is pushed to rotate the second shackle 220 clockwise to transmit the load to the second leaf spring 120 to distribute the load. Have a process.

이때, 제 2실린더(420)의 작동유는 제 1연결튜브(510)를 통해 다시 제 1실린더(410)의 좌측내부로 유입되어 충전된다.At this time, the working oil of the second cylinder 420 is introduced into the left side of the first cylinder 410 through the first connecting tube 510 and is charged.

한편, 제 2판스프링(120)에 큰 하중이 전달될 경우에는 앞서 설명한 방식과 동일하게 제 1판스프링(110)측으로도 하중이 전달되어 분산됨과 아울러, 각 실린더의 작동유도 원래대로 복원되는 과정을 갖게 된다.On the other hand, when a large load is transmitted to the second leaf spring 120, the load is transmitted and distributed to the first leaf spring 110 in the same manner as described above, and the operating oil of each cylinder is also restored to its original state. Will have

이를 간략하게 설명하면, 제 2판스프링(120)으로부터의 하중이 제 2섀클(220)을 시계방향으로 회전시켜 그 회전력으로 제 2커넥팅 링크(320)를 밀어 제 2실린더(420)의 피스톤(425)을 슬라이딩 이동시키고, 그 피스톤(425)의 이동에 따라 작동유가 제 1실린더(410)측으로 유입되면서 그 유압을 제 1커넥팅 링크(310)와 제 1섀클(210)을 통해 제 1판스프링(110)측으로 전달시켜 하중을 분산시키게 되는 과정을 갖게 된다.Briefly, the load from the second leaf spring 120 rotates the second shackle 220 clockwise to push the second connecting link 320 with the rotational force of the piston of the second cylinder 420 ( Sliding movement of the 425, the hydraulic fluid flows to the first cylinder 410 in accordance with the movement of the piston 425, the hydraulic pressure of the first leaf spring through the first connecting link 310 and the first shackle 210 Transfer to the (110) side will have a process to distribute the load.

이상과 같이 설명한 본 발명은 요철도로에서의 주행시 전달되는 큰 하중을 유압을 이용하여 분산시킬 수 있도록 한 것인바, 이에 따르면 본 발명은 요철 도로 주행시 차체의 일부위에 전달되는 하중을 다른 부위로 분산시켜 승차감을 개선시킬 수 있을 뿐만 아니라, 하중에 대한 내구성의 부담을 줄여 부품의 수명이 연장되는 등의 효과를 갖는다.The present invention as described above is to distribute the large load transmitted when driving on the uneven road by using hydraulic pressure, according to the present invention by distributing the load transmitted to a part of the vehicle body during the uneven road driving to other parts Not only can the riding comfort be improved, but the durability of the load is reduced, thereby improving the life of the parts.

Claims (2)

차체의 전,후방 양측에 설치되어 차륜을 통해 전달되는 하중을 완충시키는 제 1,2판스프링(110,120)과,First and second leaf springs 110 and 120 installed at both front and rear sides of the vehicle body to buffer loads transmitted through the wheels; 상기 제 1,2판스프링(110,120)중 하나에 하중이 전달되면 그 하중을 유압력으로 변환시켜 다른 판스프링측으로 전달하는 하중분산수단을 구비하여 된 것을 특징으로 하는 차량의 현가장치.When the load is transmitted to one of the first and second leaf springs (110,120), the load distribution means for converting the load into a hydraulic force and the transfer to the other leaf spring side, characterized in that the suspension device. 제 1항에 있어서, 상기 하중분산수단은 제 1,2판스프링(110,120)의 단부에 각각 회전가능하게 결합되는 제 1,2섀클(210,220)과,The first and second shackles 210 and 220 of claim 1, wherein the load distributing means are rotatably coupled to the ends of the first and second leaf springs 110 and 120, respectively. 상기 제 1,2섀클(210,220)의 회전력에 의해 각각 연동되는 제 1,2커넥팅 링크(310,320)와,First and second connecting links 310 and 320 interlocked by the rotational force of the first and second shackles 210 and 220, respectively; 내부에 작동유가 충전되고 상기 제 1,2커넥팅 링크(310,320)의 단부에 연결되어 연동되는 피스톤(415,425)을 각각 구비하는 제 1,2실린더(410,420)와,First and second cylinders 410 and 420 each having pistons 415 and 425 connected to and interlocked with ends of the first and second connecting links 310 and 320, respectively, 상기 제 1,2실린더(410,420)의 일측과 타측을 각각 연통되도록 연결되는 제 1,2연결튜브(510,520)를 구비하여 된 것을 특징으로 하는 차량의 현가장치.Suspension device of the vehicle, characterized in that provided with the first and second connection tubes (510, 520) connected to communicate with one side and the other side of the first and second cylinders (410,420), respectively.
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WO2016076555A1 (en) * 2014-11-10 2016-05-19 주식회사 타스글로벌 Load distribution apparatus of magnetic wheel

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KR0136946Y1 (en) * 1994-12-30 1999-03-20 전성원 Rolling preventing apparatus of parallel leaf spring type axle suspension system for automobile
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CN107073705A (en) * 2014-11-10 2017-08-18 塔斯全球有限公司 The load distribution equipment of magnet-wheel
JP2017533864A (en) * 2014-11-10 2017-11-16 タスグローバル カンパニーリミテッド Magnet wheel load balancer
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