KR980008626A - Hydraulic Bushings for Suspension - Google Patents
Hydraulic Bushings for Suspension Download PDFInfo
- Publication number
- KR980008626A KR980008626A KR1019960027628A KR19960027628A KR980008626A KR 980008626 A KR980008626 A KR 980008626A KR 1019960027628 A KR1019960027628 A KR 1019960027628A KR 19960027628 A KR19960027628 A KR 19960027628A KR 980008626 A KR980008626 A KR 980008626A
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- South Korea
- Prior art keywords
- hydraulic
- hydraulic bush
- suspension
- bush
- elastic body
- Prior art date
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- 239000000725 suspension Substances 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/02—Attaching arms to sprung part of vehicle
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- 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
- B60G2204/4102—Elastic mounts, e.g. bushings having a pin or stud extending perpendicularly to the axis of the elastic mount
-
- 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
- B60G2204/4108—Resilient element being enclosed and or pres-tressed in a solid container
-
- 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
- B60G2206/80—Manufacturing procedures
- B60G2206/82—Joining
- B60G2206/8209—Joining by deformation
- B60G2206/82092—Joining by deformation by press-fitting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
본 발명의 맥퍼슨식 서스팬션용 유압부시에 관한 것으로, 주행 상황에 따라 유압부시를 차체의 상·하방향으로 일정한 거리만큼 이동시켜 서스펜션 기구의 안정성을 확보할 수 있도록 한 것이다.The present invention relates to a hydraulic bush for a McPherson type suspension, in which the hydraulic bush is moved by a predetermined distance in the up and down direction of the vehicle body according to the traveling situation, thereby ensuring the stability of the suspension mechanism.
상기 유압부시(4)는 내통(47)과 외통(44)를 구비하고, 내통과 외통 사이에 고무탄성체(45)를 압입하고, 고무탄성체(45)의 상·하 내부에는 유체실(46)을 각각 구비하고, 내통(47)과 판(42), 원통형 연결구(41)를 연결하는 볼트(43)를 구비하는 구성으로 된 것임.The hydraulic bush 4 includes an inner cylinder 47 and an outer cylinder 44. The rubber elastic body 45 is inserted between the inner and outer cylinders and the fluid chamber 46 is formed in the upper and lower portions of the rubber elastic body 45, And a bolt 43 for connecting the inner cylinder 47 with the plate 42 and the cylindrical connecting port 41. [
Description
제1도는 종래의 서스펜션 제어장치의 시스템도.Fig. 1 is a system diagram of a conventional suspension control device; Fig.
제2도는 종래 유압부시의 단면도.FIG. 2 is a cross-sectional view of a conventional hydraulic bush; FIG.
제3도는 본 발명에 따른 유압부시의 장착도.FIG. 3 is a mounting view of the hydraulic bush according to the present invention; FIG.
제4도는 3도의 평면도.FIG. 4 is a plan view of FIG. 3; FIG.
제5도는 본 발명에 의한 유압부시의 분해 사시도.FIG. 5 is an exploded perspective view of the hydraulic bush according to the present invention; FIG.
제6도는 제5도의 A-A 단면도.6 is a cross-sectional view taken along line A-A of FIG. 5;
제7도는 제6도의 B-B선 단면도.7 is a sectional view taken along the line B-B in Fig. 6; Fig.
* 도면의 주요부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS
1 : 외부 유압원 4：유압부시1: External hydraulic source 4: Hydraulic bushing
5：서스펜션 크로스멤버 6：로어암5: Suspension cross member 6: Lower arm
7：스러스트 9：원통형 구멍7: Thrust 9: Cylindrical hole
10：차체 41：원통형 연결구10: Body 41: Cylindrical Connector
42：판 43：볼트42: Plate 43: Bolt
44：외통 45：고무탄성체44: outer tube 45: rubber elastic body
46：유체실 47：내통46: fluid chamber 47: inner tube
본 발명은 맥퍼슨식 서스펜션 제어장치에 관한 것으로, 더욱 상세하게는 주행 상황에 따라 유압부시를 차체의 상·하방향으로 일정한 거리만큼 이동시켜 서스펜션 기구의 안정성을 확보할 수 있도록 한 것으로, 특히 유압부시의 구조 개선을 통해 충분한 양의 상·하운동이 가능하도록 한 서스펜션용 유압부시를 제공함에 있다.The present invention relates to a McPherson suspension control device, and more particularly, to a suspension control device capable of securing stability of a suspension mechanism by moving a hydraulic bushing by a predetermined distance in the up and down direction of a vehicle body depending on a driving situation. So that a sufficient amount of upward and downward movement can be achieved through the improvement of the structure of the hydraulic bush.
맥퍼슨식 서스펜션 제어장치는 제1도에 나타낸 바와 같이 로어암(4)의 차체 연결부 부시(50) 내에 유체실을 2개 형성하여 유압에 의해 로어암(4)의 차체 연결부 위치를 상·하방향으로 변화시켜, 선회시나 고속주행시 차량의 롤센터(Roll center) 위치를 상·하방향으로 가변시키는 구성으로 되어 있다.As shown in FIG. 1, the McPherson-type suspension control system includes two fluid chambers formed in the vehicle body connecting bush 50 of the lower arm 4, so that the position of the vehicle body connecting portion of the lower arm 4 is shifted up and down So that the position of the roll center of the vehicle can be varied in the upward and downward directions at the time of turning or at a high speed.
상기한 자동차 서스펜션 제어장치는 조향각센서(520), 차속센서(521) 및 제어장치(52)로 구성된 제어부와 유압원(6), 4포트 3포지션 방향제어밸브(51) 및 유압부시(50)로 구성된 유압장치부로 구성되어 있다.The vehicle suspension control device includes a control unit including a steering angle sensor 520, a vehicle speed sensor 521 and a control unit 52 and a control unit including a hydraulic pressure source 6, a 4-port 3-way directional control valve 51, And a hydraulic pressure regulator.
또한 유압부시(50)는 제2도와 같이 내통(500)과 외통(501)사이에 탄성체(503)를 압입 시키고, 고무탄성체 내부에는 2개의 유체실(504, 505)이 설치되어 있으며, 외통(501)은 로어암(4)에 연결되어 있고, 내통(200)은 서스펜션 크로스멤버(차체：5)에 연결하고 있다.The hydraulic bushing 50 pressurizes the elastic body 503 between the inner cylinder 500 and the outer cylinder 501 as shown in the second view and has two fluid chambers 504 and 505 provided inside the rubber elastic body. 501 are connected to the lower arm 4 and the inner cylinder 200 is connected to a suspension cross member (vehicle body 5).
따라서 차량의 주행 상태에 따라 유압부시(50)내의 한쪽 유체실에는 압력이 걸리게 되며, 반대쪽 유체실에는 대기압상태로 되어 양 유체실(504, 505) 사이에는 압력 차가 발생하게 된다.Accordingly, pressure is applied to one of the fluid chambers in the hydraulic bushing 50 according to the traveling state of the vehicle, and atmospheric pressure is applied to the fluid chamber in the other fluid chamber, so that a pressure difference is generated between the two fluid chambers 504 and 505.
이때, 압력이 인가된 유체실은 팽창하게 되고, 압력이 걸리지 않은 유체실은 수축하게 되어, 유압부시의 외통(501) 즉 로어암의 차체 연결부는 유압부시의 내통(500) 즉 차체에 대해 상대적인 위치 변화를 발생시키게 되며, 이로 인하여 로어암(4) 차체 연결부의 위치가 상·하방향으로 변하게 된다.At this time, the fluid chamber to which the pressure is applied expands, and the fluid chamber which is not pressurized is contracted, so that the outer cylinder 501 of the hydraulic bush, that is, the body connecting portion of the lower arm is moved relative to the inner cylinder 500 of the hydraulic bush, So that the position of the vehicle body connecting portion of the lower arm 4 changes in the upward and downward directions.
그리고 로어암의 차체측 장착 위치가 이렇게 변화하면, 서스펜션 장치의 기구학적인 특성 변화로 인하여 차량의 롤센터(Roll center)의 위치가 상·하방향으로 변하게 되며, 차량의 직진 주행안정성이나, 선회시 롤(Roll)발생을 억제할 수 있다.When the mounting position of the lower arm is changed in this manner, the position of the roll center of the vehicle is changed in the upward and downward direction due to the change in the mechanical characteristics of the suspension device. In addition, Roll generation can be suppressed.
미설명 부호 1은 바퀴, 2는 너클, 3은 쇽업소버, 31은 코일스프링이다.Reference numeral 1 denotes a wheel, 2 denotes a knuckle, 3 denotes a shock absorber, and 31 denotes a coil spring.
종래에슨 양쪽 유체실에 동일한 압력을 인가하여 유압부시 전체의 강성(Stiffiness)을 조절하고자 하여도 방향제어밸브(51)의 특성상 유압부시(50)내의 양쪽 유체실(504, 505)에 동일한 압력이 인가된 상태로 유지될 수 없는 문제점이 있다.Conventionally, the same pressure is applied to both fluid chambers so as to control the stiffness of the entire hydraulic bushing. Due to the characteristics of the directional control valve 51, the same fluid pressure is applied to both fluid chambers 504 and 505 in the hydraulic bushing 50 Can not be maintained in the applied state.
또한, 방향제어밸브(51)가 "a" 또는 "c"의 위치에서 중립의 위치 "b"로 움직여도 "a"또는 "b"상태에서 유체실(504) 또는 (505)에 가해진 압력이 없어지지 않고 그대로 유지됨으로써 유압부시는 중립의 위치로 되돌아오지 않고 유압부시가 중립의 위치로 되돌아오도록 하는 것이 불가능하다는 단점이 있다.Further, even if the directional control valve 51 is moved from the position of "a" or "c" to the position of neutral "b", the pressure applied to the fluid chamber 504 or 505 in the state "a" So that it is impossible to return the hydraulic bush to the neutral position without returning to the neutral position.
종래의 유압부시는 고무탄성체의 탄성에 의한 변형만으로 로어암의 위치를 변화시킴으로써 변형량에 한계가 있다.The conventional hydraulic bushing has a limited amount of deformation by changing the position of the lower arm only by the elastic deformation of the rubber elastic body.
만일, 큰 위치 변화가 필요로 할 때에는 종래 발명으로는 부적절하다.If a large positional change is required, it is inappropriate for the conventional invention.
또한, 유압부시의 구조상 상·하변위만을 가할 수 있고, 유압부시 자체의 탄성 특성을 제어할 수 없다. 즉, 유압부시의 탄성특성을 제어하기 위해서는 양쪽 유체실이 동일한 압력을 유지될 수 있어야 함에도 불구하고 종래에는 그러하지 못하였다.Further, only the upper and lower sides of the structure of the hydraulic bush can be applied, and the elastic characteristics of the hydraulic bush itself can not be controlled. That is, in order to control the elastic characteristics of the hydraulic bush, both fluid chambers must be able to maintain the same pressure, but this has not been the case in the past.
본 발명은 상기와 같은 종래의 제반 문제점을 감안 해소하기 위해, 멕퍼슨식 서스펜션 로어암의 차체측 연결부위에 유압부시를 장착하여 유압부시의 본래 기능인 진동절연 기능을 충분히 확보하면서, 주행상황에 따라서 유압부시를 차체의 상·하방향으로 일정한 거리만큼 이동시켜 서스펜션 기구의 안정성을 확보할 수 있도록 유압부시의 구조 개선을 통해 해결하고자 한 것이다.The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a hydraulic suspension system in which a hydraulic bush is mounted on a vehicle body side connecting portion of a McPERSON type suspension lower arm to sufficiently secure a vibration isolation function, The hydraulic bush is moved up and down a predetermined distance to secure the stability of the suspension mechanism.
이하, 본 발명을 첨부 도면을 참고하여 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings.
본 발명은 제3도와 제4도는 본 발명에 따른 유압부시가 장착되는 것을 묘사하고 있는 장착도로서 윗쪽방향에서 바라본 평면도와, 전방에서 바라본 정면도를 도시하고 있다.FIGS. 3 and 4 illustrate mounting of the hydraulic bush according to the present invention, in a top plan view and a front view, respectively.
본 발명에서는 맥퍼슨식 서스펜션의 로어암(4)의 차체측에 연결 장착되는 유압부시(4)의 위치를 변화시키기 위하여 공급되는 기름의 유압원(1)과, 서스펜션 크로스멤버(5)에 형성된 원통형 구멍(9)과, 원통형 구멍의 내부를 상·하운동하는 유압부시(4)와, 유압부시의 외통에 연결된 로어암(6)과, 차체 마운팅(10)에 연결된 스러스트(7) 등으로 이루어지는 구성으로 되어 있다.In the present invention, the oil pressure source 1 of oil supplied to change the position of the hydraulic bush 4 connected to the vehicle body side of the lower arm 4 of the McPherson type suspension, A hydraulic bush 4 for moving the inside of the cylindrical hole upward and downward and a lower arm 6 connected to the outer cylinder of the hydraulic bushing and a thrust 7 connected to the vehicle body mounting 10, .
제5도는 유압부시의 분해 사시도를 도시하고 있는 것으로, 유압부시(4)의 외통에 연결된 유압부시와 일체형으로 구성되어 있고, 이 유압부시(4)는 서스펜션 크로스멤버(5)의 상·하방향으로 형성된 원통형 구멍(9)의 내부에 장착되어 원통형 구멍(9)속을 상·하 운동하도록 구성되어 있다.5 shows an exploded perspective view of the hydraulic bush 4 and is formed integrally with a hydraulic bushing connected to the outer cylinder of the hydraulic bushing 4. This hydraulic bushing 4 has an upper portion and a lower portion of the suspension cross member 5, And is configured to move upward and downward through the cylindrical hole 9.
원통형 구멍(9)은 외부 유압원(1)과 연결되어 있으며, 이 유압원(1)을 이용하여 유압부시(4)를 상·하방향으로 이동시키도록 되어 있다.The cylindrical hole 9 is connected to an external hydraulic pressure source 1 and the hydraulic pressure source 1 is used to move the hydraulic bush 4 upward and downward.
제6, 7도는 본 발명에 의한 유압부시의 단면도를 나타내고 있는 것으로, 유압부시(4)의 외통(44), 내통(47), 외통과 내통 사이에 압입된 고무탄성체(45) 및 고무탄성체(45)내에 서로 대칭으로 설치된 유체실(46)과 유압부시(4)를 2개의 판(42)과 원통형 연결구(41)에 결합하기 위한 볼트(43)로 구성되어 있으며, 상기 원통형 연결구(41)는 원통형 구멍(9)내를 상·하운동할 수 있도록 원통형 단면(48)으로 되어 있다.6 and 7 show cross-sectional views of the hydraulic bushing according to the present invention. The outer cylinder 44 and the inner cylinder 47 of the hydraulic bush 4, the rubber elastic body 45 press-fitted between the outer cylinder and the inner cylinder, 45 and a bolt 43 for coupling the hydraulic bush 4 to the two plates 42 and the cylindrical connecting port 41. The cylindrical connecting port 41 is formed of a plate- (48) so as to move upward and downward in the cylindrical hole (9).
본 발명의 동작은 앞서 설명한 바와 같이 로어암(6)에 연결된 유압부시(4)의 위치를 외부 유압원(1)에 의하여 서스펜션 크로스멤버(5)의 내부에 형성된 원통형 구멍(9)의 상·하방향으로 이동시킬 수 있는 구조로 되어 있다.The operation of the present invention is such that the position of the hydraulic bush 4 connected to the lower arm 6 is shifted by the external hydraulic pressure source 1 to the upper side of the cylindrical hole 9 formed in the suspension cross member 5 So that it can move in the downward direction.
외부 유압원(1)에 의하여 서스펜션 크로스멤버(5)의 윗쪽으로 기름이 공급되면 원통형 구멍(9)에 장착된 윗쪽에서 원통형 연결구(41)에 힘이 가해지게 되며, 이로 인하여 유압부시(4)의 위치는 아래쪽으로 움직이게 된다.When the oil is supplied to the upper side of the suspension cross member 5 by the external hydraulic pressure source 1, a force is applied to the cylindrical connecting hole 41 from the upper side mounted on the cylindrical hole 9, Is moved downward.
이와 반대로 서스펜션 크로스멤버(5)의 아랫쪽으로 기름이 공급되면 유압부시(4)는 윗쪽으로 움직이게 된다.On the contrary, when the oil is supplied to the lower side of the suspension cross member 5, the hydraulic bush 4 moves upward.
유압부시(4)의 상·하방향 운동은 위와 동일하게 되고, 유압부시(4)자체의 진동절연특성은 내통(47)과 외통(44) 사이에 장착된 고무탄성체(45)와 유체실(46)의 작용에 의하여 얻어진다.The vibration isolation characteristics of the hydraulic bush 4 itself are the same as those of the rubber elastic body 45 mounted between the inner cylinder 47 and the outer cylinder 44, 46).
이와 같은 본 발명은 유압부시의 위치를 유압에 의하여 연속적으로 변화시킬 수 있으며, 또한 유압부시(4)의 고무탄성체(45)와 탄성 변화에 의하여 유압부시의 위치를 변화시키는 것이 아니라 유압부시에 연결된 구조(41, 42, 43)에 의하여 유압부시(4)를 상·하방향으로 운동시킴으로서 큰 상·하방향의 변위를 얻을 수 있게 되는 이점이 있다.The position of the hydraulic bush can be continuously changed by the hydraulic pressure and the position of the hydraulic bush is not changed by the change of elasticity with the rubber elastic body 45 of the hydraulic bush 4 but is connected to the hydraulic bush There is an advantage that a large upward and downward displacement can be obtained by moving the hydraulic bush 4 in the upward and downward directions by the structures 41, 42,
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960027628A KR0181234B1 (en) | 1996-07-09 | 1996-07-09 | Hydraulic bush for suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960027628A KR0181234B1 (en) | 1996-07-09 | 1996-07-09 | Hydraulic bush for suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR980008626A true KR980008626A (en) | 1998-04-30 |
| KR0181234B1 KR0181234B1 (en) | 1999-03-20 |
Family
ID=19465770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960027628A KR0181234B1 (en) | 1996-07-09 | 1996-07-09 | Hydraulic bush for suspension |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0181234B1 (en) |
-
1996
- 1996-07-09 KR KR1019960027628A patent/KR0181234B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR0181234B1 (en) | 1999-03-20 |
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