KR100266153B1 - Vehicle suspension system for advancing pitching stability - Google Patents

Vehicle suspension system for advancing pitching stability Download PDF

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Publication number
KR100266153B1
KR100266153B1 KR1019940011914A KR19940011914A KR100266153B1 KR 100266153 B1 KR100266153 B1 KR 100266153B1 KR 1019940011914 A KR1019940011914 A KR 1019940011914A KR 19940011914 A KR19940011914 A KR 19940011914A KR 100266153 B1 KR100266153 B1 KR 100266153B1
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KR
South Korea
Prior art keywords
cap
state
valve
vehicle
pitching
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KR1019940011914A
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Korean (ko)
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KR950031574A (en
Inventor
박승철
강종민
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김명한
삼성상용차주식회사
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Priority to KR1019940011914A priority Critical patent/KR100266153B1/en
Publication of KR950031574A publication Critical patent/KR950031574A/en
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Publication of KR100266153B1 publication Critical patent/KR100266153B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/06—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
    • 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
    • B60G17/06—Characteristics of dampers, e.g. mechanical dampers
    • B60G17/08—Characteristics of fluid dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/10—Damping action or damper
    • B60G2500/11—Damping valves
    • B60G2500/114—Damping valves pressure regulating valves
    • 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
    • B60G2800/01—Attitude or posture control
    • B60G2800/014—Pitch; Nose dive

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

Abstract

PURPOSE: A suspension system of a vehicle is provided to improve a driving experience by securing pitching stability and to prevent an accident caused by a sudden braking. CONSTITUTION: A vehicle suspension system comprises cylinders(C1,C2) having pistons(P1,P2), a valve body(20), a valve(V), a protruded end and a bracket. If a vehicle suddenly stops during a travel, a cap(C) is pitched in a specific direction by the inertial force and the piston(P1) of the front cylinder(C1) is lifted down. Then, a fluid in a lower portion of the piston flows out via a fluid outlet(11a). According to pitching of the cap, the valve is rotated in the valve body via the bracket. Paths(21a-d) of the valve communicate partial ports(23b,24b) upon rotation of the bracket while closing other ports(23a,23c,21d,24a,24d). With the suspension system, stability is secured in pitching.

Description

피칭안정성 향상을 위한 차량의 현가장치Suspension system of vehicle for improving pitching stability

본 발명은 피칭(pitching)안정성 향상을 위한 차량의 현가장치에 관한 것으로, 특히 급제동시나 또는 도로조건이 좋지 않음으로 인해서 유발되는 진동 등으로부터 차량의 피칭안정성을 보다 향상되게 한 차량의 현가장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension of a vehicle for improving pitching stability, and more particularly, to a suspension of a vehicle to improve the pitching stability of the vehicle from vibration caused by sudden braking or poor road conditions. will be.

일반적으로 차량은 급제동시나 또는 비포장도로를 운행하게 될 때 유발되는 충격력을 감쇄시키기 위하여 피스톤식의 충격흡수수단을 구비하게 되어 있는데, 이와 같은 기존의 충격흡수수단으로는 차체에 유발되는 피칭현상을 원만하게 제어하지 못하게 되므로 안정감이 확보될 수 없고, 또 급제동시 안정사고를 유발시키게 된다는 문제점이 있었다.In general, the vehicle is provided with a piston type shock absorbing means to attenuate the impact force caused by sudden braking or driving on a dirt road. There is a problem that can not be secured because it can not be controlled, and will cause a stable accident during sudden braking.

본 발명은 상기한 바와 같은 종래의 문제점을 해소하기 위하여 안출된 것으로서, 본 발명의 목적은 피칭안정성을 확보할 수 있게 되고, 또한 이로써 승차감의 향상을 기대할 수 있게 될 뿐 아니라, 급제동시 발생되기 쉬운 안전사고를 방지하는데 기여할 수 있게 되도록, 피칭안정성 향상을 위한 차량의 현가장치를 제공하려는데 있다.The present invention has been made to solve the conventional problems as described above, the object of the present invention is to ensure the stability of the pitching, and also it can be expected to improve the ride comfort, it is easy to occur during sudden braking In order to contribute to the prevention of safety accidents, the present invention aims to provide a vehicle suspension system for improving pitching stability.

제1도는 본 발명에 의한 차량의 현가장치가 트럭에 적용된 상태를 나타내기 위한 차량의 부분 일측면도.1 is a partial side view of a vehicle for showing a state in which a suspension of a vehicle according to the present invention is applied to a truck.

제2도는 본 발명에 의한 차량의 현가장치의 개략적인 구성을 나타내기 위한 단면도.2 is a cross-sectional view for illustrating a schematic configuration of a suspension of a vehicle according to the present invention.

제3(a)도와 제3(b)도는 본 발명에 의한 차량의 현가장치의 작용 상태를 나타내기 위한 개략적인 단면도.3 (a) and 3 (b) are schematic cross-sectional views for showing the operating state of the suspension of the vehicle according to the present invention.

제4도는 제1도의 “A”부위에 대한 부분 확대도.4 is an enlarged partial view of the “A” portion of FIG.

제5도는 제4도의 I-I선 방향에서 본 일측면도이다.FIG. 5 is a side view seen from the line I-I of FIG.

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

10a,1Ob : 유체 입구 11a,11b : 유체출구10a, 10b: fluid inlet 11a, 11b: fluid outlet

13a,13b,15a,15b : 라인 20 : 밸브바디13a, 13b, 15a, 15b: line 20: valve body

21a,21b,21c,21d : 유로 V : 밸브21a, 21b, 21c, 21d: Euro V: Valve

P1,P2 : 피스톤 C1,C2 : 실린더P1, P2: Piston C1, C2: Cylinder

상기한 목적을 달성하기 위하여 본 발명은, 차량의 승차감을 좋게 하기 위한 차량의 현가장치에 있어서, 차량의 캡 전후부에 그 피스톤 로드 외부측 단부가 각각 힌지 결합되도록 설치되고, 이러한 피스톤들이 유압력에 의해 각각 상하 유동 가능하게 내재된 상태에서 그 하단 부위가 차대의 전방부에 서로 이격된 위치에서 각각 힌지 결합되며, 피스톤의 승강 작용에 따라 실린더내에 채워진 유체가 드나드는 유체 입출구가 형성된 형태로 형성된 복수의 실린더; 서로 상응하는 전후부의 상기 실린더 사이의 위치에서 상기 차대에 고정되며, 수직선 상에서 선택적으로 연통될 수 있게 각각 쌍을 이루도록, 상기 실린더의 유체 입출구와 다른 라인들에 의해 연통되는 다수 포트가 형성된 밸브바디; 상기 밸브바디에 밀접하게 내장되는 상태에서 캡의 피칭 상태에 따라 회동되어 각 쌍의 포트들을 연통 또는 차단시킬 수 있는 다수의 유로가 뚫린 밸브; 상기 캡의 피칭 상태에 따라 캡과 함께 움직일 수 있는 상태에서 상기 밸브를 회동시킬 수 있게 되도록, 상기 밸브의 일측으로 돌출된 돌출단; 상기 돌출단이 그 길이 방향으로 움직일 수 있는 상태로 그 장공에 결합되며, 이러한 상태에서 상기 캡으로부터 연장되도록 구비된 브라켓을 포함하여 이루어지는 피칭안전성 향상을 위한 차량의 현가장치를 제공한다.In order to achieve the above object, the present invention, in the suspension of the vehicle for improving the ride comfort of the vehicle, is provided so that the piston rod outer end portion is hinged to the front and rear caps of the vehicle, respectively, such pistons The lower portion is hinged at a position spaced apart from each other at the front part of the chassis in the state in which the upper and lower flows are respectively embedded, and formed in the form of a fluid inlet and outlet for entering and exiting the fluid filled in the cylinder according to the lifting action of the piston A plurality of cylinders; A valve body having a plurality of ports secured to the chassis at positions corresponding to each other in the front and rear portions corresponding to each other, each pair being connected to the fluid inlet and the other lines of the cylinder so as to be paired to be selectively communicated on a vertical line; A valve having a plurality of flow paths which are rotated according to a pitching state of the cap in a state in which the valve body is closely embedded, so that each pair of ports can communicate or be blocked; A protruding end projecting to one side of the valve to rotate the valve in a state in which the cap is movable according to the pitching state of the cap; The protruding end is coupled to the long hole in the state that can move in the longitudinal direction, in this state provides a suspension of the vehicle for improving the pitching safety comprising a bracket provided to extend from the cap.

이하에서 상기한 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하며, 종래에서와 동일한 부분으로 동일한 부호를 부여하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numerals will be given to the same parts as in the related art.

본 발명의 일 실시예에 따른 차량의 현가장치는 제1도와 제2도에 도시된 바와 같이, 각각 피스톤(P1)(P2)을 갖는 복수의 실린더(C1)(C2)와, 유체 유통이 이루지도록 구성되는 밸브바디(20) 및 밸브(V), 그리고 상기 밸브(V)를 움직일 수 있도록 하는 돌출단(27) 및 브라켓(25)으로 구성되어 있다.Suspension of a vehicle according to an embodiment of the present invention, as shown in FIG. 1 and FIG. 2, a plurality of cylinders (C1) (C2) having a piston (P1) (P2), respectively, the fluid flow is made It consists of a valve body 20 and a valve (V) configured to be, and a protruding end 27 and a bracket (25) to move the valve (V).

즉, 상기한 실린더(C1)(C2)들은, 차량의 캡(C) 전후부에 그 피스톤(P1)(P2)의 로드 외부측 단부가 각각 힌지 결합되도록 설치되고, 이러한 피스톤(P1)(P2)들이 유압력에 의해 각각 상하 유동 가능하게 내재된 상태에서 그 하단 부위가 차대(F)의 전방부에 서로 이격된 위치에서 각각 힌지 결합되며, 피스톤(P1)(P2)의 승강 작용에 따라 실린더(C1)(C2)내에 채워진 유체가 드나드는 유체 입출구(10a)(1Ob)(11a)(11b)가 형성된 형태로 형성된 복수의 것으로 되어 있다.That is, the above-mentioned cylinders C1 and C2 are installed so that the rod outer end portions of the pistons P1 and P2 are hinged to the front and rear of the cap C of the vehicle, respectively, and such pistons P1 and P2. ) Are each hinged at a position spaced apart from each other in the front portion of the chassis (F) in the state in which the upper and lower flows are respectively embedded by the hydraulic force, the cylinder according to the lifting action of the piston (P1) (P2) The fluid inlet and outlet 10a, 10b, 11a, and 11b into which the fluid filled in (C1) (C2) enters and exits are formed.

또, 상기 밸브바디(20)는 상기 실린더(C1)(C2)들의 유체 입출구(10a)(1Ob)(11a)(11b)와 다른 라인(13a)(13b)(15a)(15b)들에 의해 연통되는 다수 포트(23a)(23b)(23c)(23d)(24a)(24b)(24c)(24d)가 형성되어 있으며, 서로 상응하는 전후부의 상기 실린더(C1)(C2) 사이의 위치에서 상기 차대(F)에 고정됨과 아울러, 상기 다수포트(23a와 24a)(23b와 24b)(23c와 24c)(23d와 24d)가 수직선 상에서 선택적으로 연통될 수 있게 각각 쌍을 이루도록 되어 있다.In addition, the valve body 20 is formed by lines 13a, 13b, 15a and 15b different from the fluid inlets and outlets 10a, 10b, 11a and 11b of the cylinders C1 and C2. A plurality of ports 23a, 23b, 23c, 23d, 24a, 24b, 24c, and 24d communicating with each other are formed, and at positions between the cylinders C1 and C2 of the front and rear portions corresponding to each other. In addition to being fixed to the chassis F, the plurality of ports 23a and 24a, 23b and 24b, 23c and 24c and 23d and 24d are paired so as to be selectively communicated on a vertical line.

또, 상기한 밸브(V)는, 상기 밸브바디(20)에 밀접하게 내장되는 상태에서 캡(C)의 피칭 상태에 따라 회동되어 각 쌍의 포트(23a와 24a)(23b와 24b)(23c와 24c)(23d와 24d)들을 연통 또는 차단시킬 수 있는 다수의 유로(21a)(21b)(21c)(21d)가 뚫린 형태로 되어 있다.Moreover, the said valve V is rotated according to the pitching state of the cap C in the state which is closely embedded in the said valve body 20, and each pair of ports 23a and 24a, 23b and 24b, 23c And a plurality of flow paths 21a, 21b, 21c, and 21d capable of communicating or blocking 23c and 23c and 23d and 24d.

한편, 상기 밸브(V)의 일측으로 돌출단(27)이 형성되고, 상기 돌출단(27)이 그 길이 방향으로 움직일 수 있는 상태로 그 장공(26)에 결합되는 브라켓(25)이 상기 캡(C)으로부터 연장되도록 구비됨으로써, 상기한 바와 같은 캡(C)의 피칭 상태에 따라 캡(C)과 함께 움직일 수 있는 상태에서 상기 밸브(V)를 회동시킬 수 있게 되도록 하고 있다.On the other hand, the protruding end 27 is formed on one side of the valve (V), the bracket 25 is coupled to the long hole 26 in a state in which the protruding end 27 is movable in the longitudinal direction of the cap By being extended from (C), the said valve V can be rotated in the state which can be moved with the cap C according to the pitching state of the cap C as mentioned above.

이러한 구성에 따라 각 실린더의 경우에 대하여 그 작용 상태를 설명하면,According to this configuration, the working state of each cylinder will be described.

[캡의 전방측 실린더(C1)의 경우][In case of front cylinder C1 of cap]

차량이 전진 주행도중 급제동되면, 캡(C)은 관성력에 의해 제1도에서 표기된 화살표 “a”방향으로 피칭되며, 전방측의 실린더(C1)는 제3(a)도에서와 같이 그 피스톤(P1)이 하강되어 유체 출구(11a)를 통해 피스톤(P1) 하부의 유체가 유출된다.When the vehicle suddenly brakes during the forward driving, the cap C is pitched in the direction of arrow “a” indicated in FIG. 1 by the inertia force, and the cylinder C1 on the front side has its piston (as shown in FIG. 3 (a)). P1) is lowered so that the fluid below the piston P1 flows out through the fluid outlet 11a.

한편, 이때 캡(C)의 피칭에 따라 캡(C)에 결합된 브라켓(25)에 의해 밸브(V)가 밸브바디(20)로부터 회동되며, 밸브(V)에 형성된 다수 유로(21a)(21b)(21c)(21d)는 브라켓(25)의 회동시에 일부의 포트(23b)(24b)를 연통시키고 다른 일부의 포트(23a)(23c)(21d)(24a)(24c)(24d)를 차단시키게 된다.Meanwhile, at this time, the valve V is rotated from the valve body 20 by the bracket 25 coupled to the cap C according to the pitching of the cap C, and the plurality of flow paths 21a (formed in the valve V) ( 21b, 21c and 21d communicate with some of the ports 23b and 24b during the rotation of the bracket 25 and some of the other ports 23a, 23c and 21d, 24a and 24c and 24d. Will be blocked.

[캡의 후방측 실린더의 경우][For rear cylinder of cap]

또한, 차량이 후진 도중 급제동되면, 캡(C)은 관성력에 의해 제1도에서 표기된 화살표 “b”방향으로 피칭되며, 후방측의 실린더(C2)는 제3(b)도에서와 같이 그 피스톤(P2)이 하강되어 유체 출구(11b)를 통해 피스톤(P1) 하부의 유체가 유출된다.In addition, when the vehicle is braked during reversing, the cap C is pitched in the direction of arrow “b” indicated in FIG. 1 by the inertia force, and the cylinder C2 on the rear side has its piston as in FIG. 3 (b). P2 is lowered so that the fluid under the piston P1 flows out through the fluid outlet 11b.

한편, 이때 캡(C)의 피칭에 따라 캡(C)에 결합된 브라켓(25)에 의해 밸브(V)가 밸브바디(20)로부터 회동되며, 밸브(V)에 형성된 다수 유로(21a)(21b)(21c)(21d)는 브라켓(25)의 회동시에 일부의 포트(23b)(24b)를 연통시키고 다른 일부의 포트(23a)(23c)(21d)(24a)(24c)(24d)를 차단시키게 된다.Meanwhile, at this time, the valve V is rotated from the valve body 20 by the bracket 25 coupled to the cap C according to the pitching of the cap C, and the plurality of flow paths 21a (formed in the valve V) ( 21b, 21c and 21d communicate with some of the ports 23b and 24b during the rotation of the bracket 25 and some of the other ports 23a, 23c and 21d, 24a and 24c and 24d. Will be blocked.

상기한 바와 같은 본 발명에 의한 차량의 현가장치는, 피칭안정성을 확보할 수 있게 되고, 또한 이로써 승차감의 향상을 기대할 수 있게 될 뿐 아니라, 급제동시 발생되기 쉬운 안전사고를 방지하는데 기여할 수 있게 되도록 한다는데 그 이점이 있다.Suspension of the vehicle according to the present invention as described above, it is possible to ensure the pitching stability, and thereby can be expected to improve the ride comfort, as well as to contribute to the prevention of safety accidents that are likely to occur during sudden braking It has the advantage.

Claims (1)

차량의 승차감을 좋게 하기 위한 차량의 현가장치에 있어서, 차량의 캡 전후부에 그 피스톤 로드 외부측 단부가 각각 힌지 결합되도록 설치되고, 이러한 피스톤들이 유압력에 의해 각각 상하 유동 가능하게 내재된 상태에서 그 하단 부위가 차대의 전방부에 서로 이격된 위치에서 각각 힌지 결합되며, 피스톤의 승강 작용에 따라 실린더내에 채워진 유체가 드나드는 유체 입출구가 형성된 형태로 형성된 복수의 실린더; 서로 상응하는 전후부의 상기 실린더 사이의 위치에서 상기 차대에 고정되며, 수직선 상에서 선택적으로 연통될 수 있게 각각 쌍을 이루도록, 상기 실린더의 유체 입출구와 다른 라인들에 의해 연통되는 다수 포트가 형성된 밸브바디; 상기 밸브바디에 밀접하게 내장되는 상태에서 캡의 피칭 상태에 따라 회동되어 각 쌍의 포트들을 연통 또는 차단시킬 수 있는 다수의 유로가 뚫린 밸브; 상기 캡의 피칭 상태에 따라 캡과 함께 움직일 수 있는 상태에서 상기 밸브를 회동시킬 수 있게 되도록, 상기 밸브의 일측으로 돌출된 돌출단; 상기 돌출단이 그 길이 방향으로 움직일 수 있는 상태로 그 장공에 결합되며, 이러한 상태에사 상기 캡으로부터 연장되도록 구비된 브라켓을 포함하여 이루어지는 피칭안전성 향상을 위한 차량의 현가장치.In a vehicle suspension device for improving the ride comfort of a vehicle, the piston rod outer end portions are installed at the front and rear cap portions of the vehicle so as to hinge each other, and in such a state that the pistons are inherently movable up and down by hydraulic force, respectively. A plurality of cylinders whose lower portions are hinged at positions spaced apart from each other at the front portion of the chassis, and formed with a fluid inlet and outlet through which a fluid filled in the cylinder enters and descends according to a lifting action of the piston; A valve body having a plurality of ports secured to the chassis at positions corresponding to each other in the front and rear portions corresponding to each other, each pair being connected to the fluid inlet and the other lines of the cylinder so as to be paired to be selectively communicated on a vertical line; A valve having a plurality of flow paths which are rotated according to a pitching state of the cap in a state in which the valve body is closely embedded, so that each pair of ports can communicate or be blocked; A protruding end projecting to one side of the valve to rotate the valve in a state in which the cap is movable according to the pitching state of the cap; Suspension device of the vehicle for improving the pitching safety comprising a bracket which is coupled to the long hole in the state that the protruding end is movable in the longitudinal direction, and extends from the cap in this state.
KR1019940011914A 1994-05-30 1994-05-30 Vehicle suspension system for advancing pitching stability KR100266153B1 (en)

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KR1019940011914A KR100266153B1 (en) 1994-05-30 1994-05-30 Vehicle suspension system for advancing pitching stability

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KR100266153B1 true KR100266153B1 (en) 2000-10-02

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