KR100471821B1 - a helper spring device of rear suspension for truck - Google Patents

a helper spring device of rear suspension for truck Download PDF

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Publication number
KR100471821B1
KR100471821B1 KR10-2002-0004635A KR20020004635A KR100471821B1 KR 100471821 B1 KR100471821 B1 KR 100471821B1 KR 20020004635 A KR20020004635 A KR 20020004635A KR 100471821 B1 KR100471821 B1 KR 100471821B1
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KR
South Korea
Prior art keywords
spring
air
air spring
truck
frame
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KR10-2002-0004635A
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Korean (ko)
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KR20030064145A (en
Inventor
송길원
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현대자동차주식회사
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Priority to KR10-2002-0004635A priority Critical patent/KR100471821B1/en
Publication of KR20030064145A publication Critical patent/KR20030064145A/en
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Publication of KR100471821B1 publication Critical patent/KR100471821B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/34—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs
    • B60G11/46—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs and also fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • 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
    • B60G2204/41—Elastic mounts, e.g. bushings
    • 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
    • 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
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/02—Trucks; Load vehicles
    • B60G2300/026—Heavy duty trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/14—Trucks; Load vehicles, Busses
    • B60Y2200/145—Haulage vehicles, trailing trucks

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

Abstract

본 발명은 트럭의 리어 서스펜션 헬퍼스프링 장치에 관한 것으로, 기존의 리프스프링형 헬퍼스프링이 에어스프링(30)으로 대체되고, 이 에어스프링(30)은 후단이 크로스멤버(20)에 고정되며, 앞 부분은 서스펜션에 가해지는 하중조건에 따라 변화되는 가압력으로 눌러주는 링크기구(10)에 연결되는 한편, 상기 에어스프링(30)의 공압전달관로에 릴레이밸브(50), 체크밸브(60)등이 설치되고, 이 체크밸브(60)의 작동은 운전자가 조작하는 스위치(70)에 의해 이루어지도록 되어 있다.The present invention relates to a rear suspension hopper spring device of the truck, the conventional leaf spring hopper spring is replaced by the air spring 30, the rear end of the air spring 30 is fixed to the cross member 20, the front The part is connected to the link mechanism 10 which is pressed by the pressing force which changes according to the load condition applied to the suspension, while the relay valve 50, the check valve 60, etc. are connected to the pneumatic transfer pipe of the air spring 30. The check valve 60 is operated by a switch 70 operated by a driver.

따라서, 운전자는 상기 스위치(70)를 조작하여 화물의 적재량에 따라 상기 에어스프링(30)의 스프링강도를 조절함으로써 서스펜션 전체의 스프링강도를 조절할 수 있게 되고, 이로써 항상 최적의 승차감을 얻을 수 있게 된다.Accordingly, the driver can adjust the spring strength of the entire suspension by adjusting the spring strength of the air spring 30 in accordance with the load amount of the cargo by operating the switch 70, thereby obtaining an optimum ride comfort at all times. .

Description

트럭의 리어 서스펜션 헬퍼스프링 장치{a helper spring device of rear suspension for truck}Rear suspension helpers spring device for trucks {a helper spring device of rear suspension for truck}

본 발명은 트럭의 리어 서스펜션에 관한 것으로, 특히 메인스프링을 보조하는 헬퍼스프링 장치에 관한 것이다.The present invention relates to a rear suspension of a truck, and more particularly to a helper spring device for assisting the main spring.

일반적으로 트럭의 리어 서스펜션에는 다수의 탄성플레이트가 겹쳐져 이루어진 리프스프링(leaf spring)이 주로 사용된다.In general, a leaf spring composed of a plurality of elastic plates is mainly used for the rear suspension of a truck.

도 1에 도시된 바와 같이, 상기 리프스프링(102)은 액슬(101)에 중앙부분이 지지되는 상태로 U볼트(103)를 매개로 장착되며, 양단의 스프링아이는 프레임(F)에 장착된 브라켓(104,105)에 각각 장착된다.As shown in Figure 1, the leaf spring 102 is mounted via the U bolt 103 with the center portion supported on the axle 101, the spring eyes of both ends are mounted to the frame (F) Mounted to brackets 104 and 105, respectively.

그러나, 상기 하나의 리프스프링(102)만으로 적차시 증가되는 하중을 충분히 지지할 수 없는 경우에는 상기 리프스프링(102)을 메인스프링으로 하여--이하, 메인스프링의 도번을 102로 한다.-- 이보다 크기가 작은 헬퍼스프링(106)을 메인스프링(102)의 상부에 얹고, 상기 U볼트(103)를 공유하여 메인스프링(102)과 헬퍼스프링(106)을 동시에 액슬(101)에 장착하며, 헬퍼스프링(106)의 양단도 상기 메인스프링용 브라켓(104,105)의 내측에 설치된 브라켓(107,108)에 장착한다.However, in the case where only one leaf spring 102 cannot sufficiently support the load increased during loading, the leaf spring 102 is used as the main spring. Hereinafter, the main spring is referred to as 102. A smaller helper spring 106 is placed on the top of the main spring 102, and the main bolt 102 and the helper spring 106 are simultaneously mounted to the axle 101 by sharing the U bolt 103. Both ends of the helper spring 106 are also mounted to the brackets 107 and 108 provided inside the main spring brackets 104 and 105.

따라서, 상기 헬퍼스프링(106)은 메인스프링(102)의 지지력을 보강하는 역할을 하게 된다.Therefore, the helper spring 106 serves to reinforce the supporting force of the main spring 102.

한편, 트럭은 화물을 싣지 않은 공차시와 화물을 실은 적차시에 리어 서스펜션에 가해지는 하중의 크기가 대단히 차이가 크다.On the other hand, the truck has a great difference in the magnitude of the load applied to the rear suspension at the time when the cargo is not loaded and the cargo is loaded.

그런데, 상기 헬퍼스프링(106)은 메인스프링(102)과 조합되어 최대 적차하중을 지지할 수 있는 탄성강도를 가지도록 제작된 것이고, 용량에 차이가 있을 뿐 메인스프링과 같은 리프스프링으로서 제작시 설정된 스프링상수가 변경될 수 없는 것이므로, 차량 공차시에도 적차시와 동일한 탄성력으로 차체를 지지하게 된다.By the way, the helper spring 106 is manufactured in combination with the main spring 102 to have an elastic strength that can support the maximum load load, there is a difference in capacity but is set at the time of manufacturing as a leaf spring such as the main spring Since the spring constant is not changeable, the vehicle body is supported by the same elastic force as when the vehicle is loaded even when the vehicle is tolerated.

즉, 공차시에도 지나치게 강력한 상태(스프링이 하드(hard)한 상태)로 차체를 지지함으로써 승차감이 저하되는 문제점이 있었다.In other words, there is a problem in that the ride comfort is lowered by supporting the vehicle body in an excessively strong state (a state in which the spring is hard) even during tolerance.

이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 헬퍼스프링의 스프링 강도를 운전자 임의대로 조절할 수 있게 됨으로써 화물의 적재량에 따라 서스펜션의 스프링 강도를 조절하여 최적의 승차감을 확보할 수 있도록 된 트럭의 리어 서스펜션 헬퍼스프링 장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, it is possible to adjust the spring strength of the helper spring as the driver arbitrarily to ensure the optimum ride comfort by adjusting the spring strength of the suspension according to the load of the cargo The object is to provide a rear suspension helper spring device for a truck.

상기와 같은 목적을 달성하기 위한 본 발명은, 프레임에 대한 액슬의 상하이동을 부분 회동으로 전환하는 링크기구와, 크로스멤버의 중앙에 설치되어 상기 링크기구의 부분 회동력을 받아 들이는 에어스프링과, 이 에어스프링에 공압를 공급하는 에어탱크와, 이 에어탱크와 상기 에어스프링의 사이에 설치되는 릴레이밸브와, 운전자가 스위치를 조작함으로써 작동되어 상기 에어탱크의 공압을 전달하여 상기 릴레이밸브가 열려지도록 하는 체크밸브로 구성된다.The present invention for achieving the above object, the link mechanism for converting the shankdong of the axle to the frame to the partial rotation, and the air spring is installed in the center of the cross member to receive the partial rotational force of the link mechanism; And an air tank for supplying air pressure to the air spring, a relay valve installed between the air tank and the air spring, and operated by a driver operating a switch to transfer the air pressure of the air tank to open the relay valve. It consists of a check valve.

즉, 상기 에어스프링이 크로스멤버와 링크기구의 사이에서 차량의 하중에 따른 가압력을 받고 있으므로 메인스프링을 보조하는 헬퍼스프링의 역할을 하게 되며, 상기 에어스프링은 에어탱크로부터 전달되는 공압을 조절함으로써 스프링강도를 조절할 수 있으므로 서스펜션 전체의 스프링강도를 화물의 적차상태에 따라 적절히 조절할 수 있게 된다.That is, since the air spring receives the pressing force according to the load of the vehicle between the cross member and the link mechanism, it serves as a helper spring to assist the main spring, and the air spring springs by adjusting the air pressure transmitted from the air tank. Since the strength can be adjusted, the spring strength of the entire suspension can be properly adjusted according to the loading condition of the cargo.

이하, 본 발명을 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

도 2와 도 3은 각각 본 발명에 따른 헬퍼스프링의 설치상태 측면도와 평면도로서, 상기 링크기구(10)는 액슬(101)의 상면에 장착된 브라켓(11)과, 이 브라켓(11)에 수직 상태로 힌지연결되는 로드(12)와, 이 로드(12)의 상단에 수평상태로 힌지연결되는 아암(13a)이 양단에 형성되고 양측 프레임(F)에 관통설치되며 중앙에 하방으로 돌출판(13b)이 형성된 크로스바(13)로 구성되며, 이 크로스바(13)의 프레임(F) 관통부는 부시(B)에 의해 지지된다.2 and 3 are respectively a side view and a plan view of an installation state of the helper spring according to the present invention, wherein the link mechanism 10 includes a bracket 11 mounted on an upper surface of the axle 101 and perpendicular to the bracket 11. A rod 12 hinged in a state and an arm 13a hinged in a horizontal state at an upper end of the rod 12 are formed at both ends and penetrated through both side frames F, and protrude downward from the center ( It consists of the crossbar 13 in which 13b) was formed, and the penetrating part of the frame F of this crossbar 13 is supported by the bush B. As shown in FIG.

상기 에어스프링(30)은 양측 프레임(F)을 가로로 연결하는 크로스멤버(20)의 하면에 형성된 브라켓(21)에 리어로드(31)가 힌지연결되고, 프론트로드(32)는 상기 크로스바(13)의 돌출판(13b)에 힌지연결되는 구조로 설치된다.The air spring 30 has a rear rod 31 hingedly connected to the bracket 21 formed on the bottom surface of the cross member 20 connecting the two side frames (F) horizontally, the front rod 32 is the crossbar ( 13) is installed in a structure that is hinged to the protrusion plate (13b).

또한, 상기 에어스프링(30)은 에어탱크(40)에 연결되어 공압을 전달받도록 되어 있으며, 에어스프링(30)과 에어탱크(40)를 연결하는 공압관로 상에 릴레이밸브(50)가 설치된다.In addition, the air spring 30 is connected to the air tank 40 to receive the pneumatic pressure, the relay valve 50 is installed on the pneumatic pipe path connecting the air spring 30 and the air tank 40. .

또한, 상기 릴레이밸브(50)는 에어탱크(40)로부터 작동압력을 전달받도록 되어 있으며, 이 작동압력 전달관로 상에 운전자의 스위치(70) 조작에 의해 개폐되는 체크밸브(60)가 설치된다.In addition, the relay valve 50 is to receive the operating pressure from the air tank 40, the check valve 60 is installed on the operating pressure transmission line by opening and closing by the driver's 70 switch operation.

이하, 본 발명의 작동을 설명한다.The operation of the present invention will be described below.

차체 중량에 의해서 차고가 낮아지거나 또는 주행중 노면이 요철에 따라 휠(W)이 상승됨에 따라 즉, 서스펜션에 가해지는 하중 조건에 따라 프레임(F)과 액슬(101)간의 거리는 변화한다.The distance between the frame F and the axle 101 changes as the height of the vehicle is lowered due to the body weight or the wheel W is raised as the road surface is uneven while driving, that is, depending on the load condition applied to the suspension.

이 거리가 줄어들 때 상기 로드(12)는 상승되며, 이에 따라 상기 크로스바(13)는 반시계방향으로 회동된다.When this distance is reduced, the rod 12 is raised so that the crossbar 13 is rotated counterclockwise.

따라서, 크로스바(13)의 돌출판(13b)이 에어스프링(30)의 프론트로드(32)를 밀어주게 되고, 에어스프링(30)의 후부는 고정되어 있으므로 에어스프링(30)은 압축된다.Therefore, the protruding plate 13b of the crossbar 13 pushes the front rod 32 of the air spring 30, and since the rear part of the air spring 30 is fixed, the air spring 30 is compressed.

즉, 상기 에어스프링(30)은 자신의 스프링 강도를 가지고 하중조건에 따라 변화되는 돌출판(13b)의 가압력에 대해 반력을 발생하며 상기 메인스프링(102)의 스프링작용을 보조하므로 헬퍼스프링의 역할을 하게 되는 것이다.That is, the air spring 30 has a spring strength of its own and generates a reaction force against the pressing force of the protruding plate 13b which is changed according to the load condition, and assists the spring action of the main spring 102, thereby serving as a helper spring. Will be.

한편, 상기 에어스프링(30)의 스프링 강도는 에어탱크(40)로부터 전달되는 공압의 크기를 조절함으로써 변화시킬 수 있게 되는데, 상기 릴레이밸브(50)는 상기 체크밸브(60)가 개방됨으로써 에어탱크(40)로부터 작동압력을 인가받아 개방되고, 상기 체크밸브(60)는 운전자가 실내에 설치된 스위치(70)를 조작함으로써 개방시킬 수 있도록 되어 있으므로, 운전자는 자신의 의지대로 상기 에어스프링(30)에 전달되는 공압의 크기를 조절하여 에어스프링(30)의 스프링 상수를 조절할 수 있게 된다.On the other hand, the spring strength of the air spring 30 can be changed by adjusting the size of the pneumatic pressure transmitted from the air tank 40, the relay valve 50 is opened by the check valve 60, the air tank The check valve 60 is opened by receiving an operating pressure from the driver 40, and the driver can open the check valve 60 by operating the switch 70 installed in the room. It is possible to adjust the spring constant of the air spring 30 by adjusting the size of the pneumatic pressure transmitted to.

따라서, 상기 에어스프링(30)이 헬퍼스프링의 역할을 하는 서스펜션 전체의 스프링 상수를 조절(=스프링 강도 조절)할 수 있게 되므로, 운전자는 화물의 적재량에 따라 서스펜션의 스프링 강도를 적절히 조절하여 항상 최적의 승차감을 얻을 수 있게 된다.Therefore, since the air spring 30 can adjust the spring constant of the entire suspension serving as a helper spring (= spring strength adjustment), the driver is always optimal by adjusting the spring strength of the suspension according to the load of the cargo You can get a ride.

이상 설명한 바와 같이 본 발명에 따르면, 헬퍼스프링을 리프스프링에서 에어스프링으로 변경함으로써 헬퍼스프링의 스프링 강도를 조절할 수 있게 되고, 이와 같이 헬퍼스프링의 스프링 강도 조절을 통해서 메인스프링과 조합된 서스펜션 전체의 스프링 강도를 적재되는 화물량에 따라 조절할 수 있게 된다.As described above, according to the present invention, by changing the helper spring from the leaf spring to the air spring, it is possible to adjust the spring strength of the helper spring, and thus the spring of the entire suspension combined with the main spring by adjusting the spring strength of the helper spring. The strength can be adjusted according to the amount of cargo loaded.

따라서, 서스펜션의 스프링 강도가 최대로 설정되어 변화될 수 없는 종래의 경우와는 달리 항상 최적의 승차감을 확보할 수 있게 되는 효과가 있다. Therefore, unlike the conventional case in which the spring strength of the suspension is set to the maximum and cannot be changed, there is an effect that it is possible to always secure the optimum riding comfort.

도 1은 종래 트럭의 리어 서스펜션을 도시한 도면,1 is a view showing the rear suspension of a conventional truck,

도 2는 본 발명에 따른 헬퍼스프링 장치가 설치된 트럭의 리어 서스펜션을 도시한 도면,2 is a view illustrating a rear suspension of a truck provided with a helper spring device according to the present invention;

도 3은 본 발명에 따른 헬퍼스프링 장치의 평면도이다.3 is a plan view of the helper spring apparatus according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10 : 링크기구, 11,21 : 브라켓,10: link mechanism, 11, 21: bracket,

12 : 로드, 13 : 크로스바,12: rod, 13: crossbar,

13a : 아암, 13b : 돌출판,13a: arm, 13b: protrusion plate,

20 : 크로스멤버, 30 : 에어스프링,20: cross member, 30: air spring,

31 : 리어로드, 32 : 프론트로드,31: rear load, 32: front load,

40 : 에어탱크, 50 : 릴레이밸브,40: air tank, 50: relay valve,

60 : 체크밸브, 70 : 스위치,60: check valve, 70: switch,

101 : 액슬, 102 : 메인스프링,101: axle, 102: main spring,

104,105 : 브라켓, B : 부시,104,105: bracket, B: bush,

F : 프레임, W : 휠.F: frame, W: wheel.

Claims (4)

프레임(F)에 대한 액슬(101)의 상하이동을 부분 회동으로 전환하는 링크기구(10)와, 프레임(F)의 크로스멤버(20) 중앙에 설치되어 상기 링크기구(10)의 부분 회동에 의해 가압되는 에어스프링(30)과, 이 에어스프링(30)에 공압을 공급하는 에어탱크(40)와, 이 에어탱크(40)와 상기 에어스프링(30)의 사이에 설치되는 릴레이밸브(50)와, 운전자가 스위치(70)를 조작함으로써 작동되어 상기 에어탱크(40)의 공압을 전달하여 상기 릴레이밸브(50)가 열려지도록 하는 체크밸브(60)로 구성되는 트럭의 리어 서스펜션 헬퍼스프링 장치.A link mechanism 10 for converting the shanghai movement of the axle 101 to the frame F into partial rotation, and a center portion of the cross member 20 of the frame F, which is installed at the partial rotation of the link mechanism 10. An air spring 30 pressurized by the air spring, an air tank 40 for supplying air pressure to the air spring 30, and a relay valve 50 provided between the air tank 40 and the air spring 30. And a check valve 60 which is operated by a driver operating the switch 70 to transmit the pneumatic pressure of the air tank 40 so that the relay valve 50 is opened. . 제 1항에 있어서, 상기 링크기구(10)는 액슬(101)에 장착된 브라켓(11)에 수직 상태로 힌지연결되는 로드(12)와, 이 로드(12)에 수평상태로 힌지연결되는 아암(13a)이 양단에 형성되고 양측 프레임(F)에 관통설치되며 중앙에 하방으로 돌출판(13b)이 형성된 크로스바(13)로 이루어지는 것을 특징으로 하는 트럭의 리어 서스펜션 헬퍼스프링 장치.2. The link mechanism (10) according to claim 1, wherein the link mechanism (10) comprises a rod (12) hinged in a vertical state to a bracket (11) mounted to an axle (101), and an arm hinged in a horizontal state to the rod (12). A rear suspension helper spring device for a truck, characterized in that the crossbars 13 are formed at both ends and penetrated to both side frames F, and a protrusion plate 13b is formed at the center downward. 제 2항에 있어서, 상기 크로스바(13)의 프레임(F) 관통부는 부시(B)에 의해 지지되는 것을 특징으로 하는 트럭의 리어 서스펜션 헬퍼스프링 장치.The rear suspension helper spring device according to claim 2, wherein the through-frame of the frame (F) of the crossbar (13) is supported by a bush (B). 제 2항에 있어서, 상기 크로스바(13)의 돌출판(13b)에 에어스프링(30)의 프론트로드(32)가 힌지연결되고, 에어스프링(30)의 리어로드(31)는 프레임(F)의 크로스멤버(20) 하면에 형성된 브라켓(21)에 힌지연결되는 것을 특징으로 하는 트럭의 리어 서스펜션 헬퍼스프링 장치.The front rod 32 of the air spring 30 is hingedly connected to the protrusion plate 13b of the crossbar 13, and the rear rod 31 of the air spring 30 is connected to the frame F. The rear suspension hopper spring device of the truck, characterized in that the hinge is connected to the bracket (21) formed on the lower surface of the cross member (20).
KR10-2002-0004635A 2002-01-26 2002-01-26 a helper spring device of rear suspension for truck KR100471821B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102575403B1 (en) 2022-11-16 2023-09-07 이종수 Helper spring for vehicle

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KR101241695B1 (en) * 2006-09-11 2013-03-08 현대자동차주식회사 A leaf suspension system
KR20200128812A (en) 2019-05-07 2020-11-17 현대자동차주식회사 Rear suspension system of vehicle
KR102391147B1 (en) 2020-10-20 2022-04-27 안덕하 Variable helper spring system for vehicles with left and right independent driving method

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JPS5583611A (en) * 1978-12-16 1980-06-24 Shin Meiwa Ind Co Ltd Adjusting device for height from ground of coupler in tractor
JPH0911726A (en) * 1995-06-30 1997-01-14 Daewoo Electronics Co Ltd Height adjusting device for automobile
JPH0999718A (en) * 1995-10-09 1997-04-15 Mitsubishi Motors Corp Trunnion type suspension

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Publication number Priority date Publication date Assignee Title
JPS5583611A (en) * 1978-12-16 1980-06-24 Shin Meiwa Ind Co Ltd Adjusting device for height from ground of coupler in tractor
JPH0911726A (en) * 1995-06-30 1997-01-14 Daewoo Electronics Co Ltd Height adjusting device for automobile
JPH0999718A (en) * 1995-10-09 1997-04-15 Mitsubishi Motors Corp Trunnion type suspension

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102575403B1 (en) 2022-11-16 2023-09-07 이종수 Helper spring for vehicle

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