KR20050070578A - Suspension bush of fluid sealed type - Google Patents

Suspension bush of fluid sealed type Download PDF

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Publication number
KR20050070578A
KR20050070578A KR1020030100283A KR20030100283A KR20050070578A KR 20050070578 A KR20050070578 A KR 20050070578A KR 1020030100283 A KR1020030100283 A KR 1020030100283A KR 20030100283 A KR20030100283 A KR 20030100283A KR 20050070578 A KR20050070578 A KR 20050070578A
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KR
South Korea
Prior art keywords
fluid
suspension bush
chamber
sealing chamber
elastic member
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KR1020030100283A
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Korean (ko)
Inventor
우승훈
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현대자동차주식회사
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Priority to KR1020030100283A priority Critical patent/KR20050070578A/en
Publication of KR20050070578A publication Critical patent/KR20050070578A/en

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    • 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
    • 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
    • B60G17/015—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 the regulating means comprising electric or electronic elements
    • B60G17/018—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 the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
    • 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
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/532—Electrorheological [ER] fluid dampers
    • 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
    • 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
    • F16F2224/00—Materials; Material properties
    • F16F2224/04—Fluids
    • F16F2224/043—Fluids electrorheological

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

Abstract

본 발명은 유체봉입형 서스펜션 부시에 관한 것으로, 케이스내에 연결빔과 탄성부재가 설치되고, 연결빔과 탄성부재 사이에 유체봉입실이 형성되며, 이 유체봉입실이 복수의 오리피스를 갖는 피스톤을 매개로 구획된 유체봉입형 서스펜션 부시에 있어서, 상기 유체봉입실(7)에 ER유체가 충진되어 전압의 세기에 비례하여 점성이 조절되도록 구성되며, 상기 케이스(1) 및 유체봉입실(7)이 전극으로 구성되어 컨트롤러(15)로부터 인가되는 제어신호에 따라 자장을 형성하도록 구성하므로써 댐핑값을 차량 주행상황에 따라 최적의 값으로 능동제어할 수 있으며, 이로 인해 조정안정성과 승차감이 향상되고, 구조가 간단하여 경량화를 기할 수 있으며 유동되는 부분이 없어 내구성이 저하되는 것을 방자할 수 있도록 되어 있다. The present invention relates to a fluid-enclosed suspension bush, in which a connecting beam and an elastic member are installed in a case, and a fluid sealing chamber is formed between the connecting beam and the elastic member, and the fluid sealing chamber mediates a piston having a plurality of orifices. In the fluid enclosed suspension bush divided into ER fluid is filled in the fluid encapsulation chamber (7) is configured to adjust the viscosity in proportion to the intensity of the voltage, the case (1) and the fluid encapsulation chamber (7) is It is composed of electrodes to form a magnetic field according to the control signal applied from the controller 15, it is possible to actively control the damping value to the optimal value according to the driving situation of the vehicle, thereby improving the adjustment stability and ride comfort, structure It can be simple to reduce the weight and there is no flow part to prevent the durability is reduced.

Description

유체 봉입형 서스펜션 부시{Suspension Bush of Fluid Sealed Type} Suspension Bush of Fluid Sealed Type

본 발명은 차량의 서스펜션에 설치되는 유체봉입형 부시에 관한 것으로, 보다 상세하게는 부시내부에 ER유체를 충진하고 유체에 가해지는 전압의 세기를 제어함으로써 댐핑 값을 최적으로 제어할 수 있도록 된 유체봉입형 서스펜션 부시에 관한 것이다.The present invention relates to a fluid-enclosed bush installed in a suspension of a vehicle, and more particularly, a fluid which is capable of optimally controlling a damping value by filling an ER fluid in the bush and controlling the strength of voltage applied to the fluid. It relates to a sealed suspension bush.

주지된 바와 같이 차량에는 프레임과 차축사이에 설치되어 앞/ 뒤 차축을 지지하는 서스펜션이 설치되어 차량의 상하진동을 완화하고 전후 또는 좌우의 흔들림을 경감시켜 조종안정성과 승차감을 향상시키는데, 최근에는 쇽압소버 하우징 패널과 어퍼아암브라켓트에 구비되는 체결홈 사이에 유체봉입형 부시를 개재시켜 충진된 작동유체의 댐핑력에 의해 차체로 전달되는 충격력을 보다 안정적으로 흡수시키도록 하고 있다.As is well known, the vehicle is provided with a suspension between the frame and the axle to support the front and rear axles to alleviate up and down vibrations of the vehicle and to reduce front, rear, left and right shaking, and to improve steering stability and ride comfort. A fluid-enclosed bush is interposed between the absorber housing panel and the fastening groove provided in the upper arm bracket to more stably absorb the impact force transmitted to the vehicle body by the damping force of the filled working fluid.

이와 같은 역할을 하는 부시는 오일이 충진된 것을 사용하는 것이 일반적이나, 오일을 이용하게 되면 충진된 오일량에 비례하여 고정된 댐핑특성을 발휘하게 되기 때문에 최적의 댐핑력을 기대하기 어렵고, 따라서 차체의 거동에 따라 보다 능동적으로 댐핑력을 발휘할 수 있는 부시를 개발하여야 하는 실정이다.  Bushes that play such roles are generally filled with oil, but when oil is used, the damping characteristics are fixed in proportion to the amount of filled oil. According to the behavior of, it is necessary to develop a bush that can exert the damping force more actively.

즉, 정상주행 상태에서 차량에서 발생되는 충격력을 흡수하기 위해서는 비교적 낮은 댐핑력이 적합하며, 제동시와 같이 차체가 한쪽으로 쏠리는 경우에는 비교적 높은 댐핑력이 필요한데, 종래 일반적으로 사용되는 부시는 댐핑특성이 고정되어 있기 때문에 차량의 주행상태에 대응하여 능동적인 댐핑력을 발휘할 수 없다는 것이 문제점으로 대두되고 있는 것이다.That is, a relatively low damping force is suitable to absorb the impact force generated in a vehicle in a normal driving state, and a relatively high damping force is required when the vehicle body is pulled to one side, such as during braking. The problem is that it is impossible to exert an active damping force in response to the driving state of the vehicle because it is fixed.

이에 본 발명은 상기와 같은 문제를 해결하기 위한 것으로, 부시 내부에 ER유체를 충진하여 전압의 세기를 조절하므로써 댐핑값을 차량 주행상황에 따라 최적의 값으로 제어할 수 있도록 된 유체봉입형 서스펜션 부시를 제공함에 그 목적이 있다. Accordingly, the present invention is to solve the above problems, by filling the ER fluid inside the bush by adjusting the intensity of the fluid damping value can be controlled to the optimum value according to the driving situation of the fluid-filled suspension bush The purpose is to provide.

상기와 같은 목적을 달성하기 위한 본 발명 유체봉입형 서스펜션 부시는, 케이스내에 연결빔과 탄성부재가 설치되고, 연결빔과 탄성부재 사이에 유체봉입실이 형성되며, 이 유체봉입실이 복수의 오리피스를 갖는 피스톤을 매개로 구획된 유체봉입형 서스펜션 부시에 있어서, 상기 유체봉입실에 ER유체가 충진되어 전압의 세기에 비례하여 점성이 조절되도록 구성되며, 상기 케이스 및 유체봉입실 측부가 전극으로 구성되어 컨트롤러로부터 인가되는 제어신호에 따라 자장을 형성하도록 구성된 것을 특징으로 한다. In the fluid-filled suspension bush of the present invention for achieving the above object, a connection beam and an elastic member are installed in a case, and a fluid sealing chamber is formed between the connection beam and the elastic member, and the fluid sealing chamber includes a plurality of orifices. In the fluid-enclosed suspension bushing partitioned via a piston having a piston, ER fluid is filled in the fluid encapsulation chamber is configured to adjust the viscosity in proportion to the strength of the voltage, the case and the fluid enclosed chamber side is composed of electrodes And form a magnetic field according to a control signal applied from the controller.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명 유체 봉입형 서스펜션 부시의 제 1실시예를 도시한 단면도로써, 본 발명에 따른 1실시예는 도면에 도시된 것과 같이, 케이스(1)에 고무재질의 탄성부재(3)가 내장되고, 케이스(1)의 길이방향으로 연결빔(5)이 설치되며, 상기 탄성부재(3)에는 연결빔(5)과의 사이에 유체봉입실(7)이 형성되는 한편, 이 유체봉입실(7)에는 연결빔(5)의 축단면방향으로 피스톤(9)이 설치되어 유체봉입실(7)이 좌/우측으로 구획된다.1 is a cross-sectional view showing a first embodiment of the fluid-enclosed suspension bush of the present invention. As shown in the drawing, the first embodiment of the present invention is provided with an elastic member 3 made of rubber material in the case 1. The connection beam 5 is provided in the longitudinal direction of the case 1, and the fluid sealing chamber 7 is formed in the elastic member 3 between the connection beam 5, and the fluid rod The entrance chamber 7 is provided with a piston 9 in the axial cross-sectional direction of the connecting beam 5 so that the fluid sealing chamber 7 is divided into left and right sides.

그리고, 상기 피스톤(9)에는 복수의 오리피스(11)가 형성되어 이 오리피스(11)를 통해 유체봉입실(7)에 충진된 작동유체가 유체봉입실(7)내에서 좌측과 우측으로 이동되도록 구성되는데, 여기서 상기 작동유체는 가해지는 전압의 크기에 따라 점성이 높아지거나 낮아지는 특성을 갖는 ER유체(Electro-Rheological Fluid)이고, 상기 케이스(1)는 통전가능한 재질로 형성되어 하나의 전극을 구성한다.In addition, a plurality of orifices 11 are formed in the piston 9 such that the working fluid filled in the fluid sealing chamber 7 is moved to the left and right in the fluid sealing chamber 7 through the orifice 11. In this case, the working fluid is an ER fluid (Electro-Rheological Fluid) having a characteristic of increasing or decreasing viscosity according to the magnitude of the applied voltage, the case (1) is formed of a conductive material to form a single electrode Configure.

또한, 상기 유체봉입실(7) 좌우측에 각각 통전가능한 재질로 이루어진 플레이트(13)가 설치되고, 이 플레이트(13)는 컨트롤러(15)와 전기적으로 연결되어 컨트롤러(15)로부터 인가되는 전기적인 신호에 의해 통전되도록 구성된다.In addition, a plate 13 made of an electrically conductive material is installed at left and right sides of the fluid encapsulation chamber 7, and the plate 13 is electrically connected to the controller 15, and an electrical signal applied from the controller 15. It is configured to be energized by.

따라서, 상기와 같은 구조로 된 서스펜션부시(17)가 일반적인 주행조건에서충격력을 흡수하기 위해서는 컨트롤러(15)로부터 인가되는 제어신호에 따라 플레이트(13)가 통전되면서 유체봉입실(7)주위에 약한 자기장을 형성하여 작동유체의 점성을 낮게 하므로 작동유체가 유체봉입실(7)내에서 오리피스(11)를 통과할 때 유동저항을 작게 하므로써 비교적 낮은 댐핑력을 제공하도록 한다.Accordingly, in order to absorb the impact force under the general driving conditions, the suspension bush 17 having the structure as described above is weak in the fluid enclosing chamber 7 while the plate 13 is energized according to the control signal applied from the controller 15. By forming a magnetic field to lower the viscosity of the working fluid to provide a relatively low damping force by reducing the flow resistance when the working fluid passes through the orifice 11 in the fluid sealing chamber (7).

그리고, 제동시와 같이 차량의 쏠림에 대응하여 서스펜션이 보다 강하게 차체를 지지해야 하는 경우에는, 컨트롤러(15)로부터의 제어신호에 따라 유체봉입실(7) 주위에 강한 자기장을 형성시키도록 하여 작동유체의 점성을 높여주므로써 유체봉입실(7)내에서 작동유체가 오리피스(11)를 통과할 때 유동저항을 보다 크게 하여 비교적 높은 댐핑력을 제공하도록 한다. When the suspension needs to support the vehicle body more strongly in response to the vehicle's tilting, such as during braking, a strong magnetic field is formed around the fluid sealing chamber 7 according to a control signal from the controller 15. By increasing the viscosity of the fluid to increase the flow resistance when the working fluid passes through the orifice 11 in the fluid sealing chamber (7) to provide a relatively high damping force.

이에 따라 본 발명의 제 1실시예에 따른 서스펜션부시(17)는 차량 운행상태에 따라 종방향에 대해 댐핑력을 발휘하여 차체와 바퀴사이를 능동적으로 제어할 수 있다.Accordingly, the suspension bush 17 according to the first embodiment of the present invention can actively control the vehicle body and the wheels by exerting a damping force in the longitudinal direction according to the vehicle driving state.

도 2와 도 3은 각각 본 발명 유체 봉입형 서스펜션 부시의 제 2실시예를 도시한 단면도로써, 본 발명에 따른 1실시예는 도면에 도시된 것과 같이, 케이스(1)에 고무재질의 탄성부재(3)가 내장되고, 케이스(1)의 길이방향으로 연결빔(5)이 설치되며, 상기 탄성부재(3)에는 연결빔(5)과의 사이에 유체봉입실(7)이 형성되는 한편, 이 유체봉입실(7)에는 피스톤(9)이 연결빔(5)에 축방향으로 고정되면서 유체봉입실(7)을 상하로 구획하도록 설치된다.2 and 3 are cross-sectional views showing a second embodiment of the present invention fluid enclosed suspension bush, one embodiment according to the present invention, as shown in the figure, the elastic member of the rubber material in the case (1) (3) is built in, the connecting beam (5) is provided in the longitudinal direction of the case (1), the fluid member (7) is formed in the elastic member (3) between the connecting beam (5) In addition, the fluid sealing chamber 7 is provided so that the piston 9 is axially fixed to the connecting beam 5 so as to partition the fluid sealing chamber 7 up and down.

그리고, 상기 피스톤(9)에는 복수의 오리피스(11)가 형성되어 이 오리피스(11)를 통해 유체봉입실(7)에 충진된 작동유체가 유체봉입실(7)내에서 상측과 하측으로 이동되도록 구성되며, 상기 유체봉입실(7)에 충진되는 작동유체는 상기 제 1실시예와 마찬가지로 ER유체이다.In addition, a plurality of orifices 11 are formed in the piston 9 so that the working fluid filled in the fluid sealing chamber 7 through the orifice 11 is moved upward and downward in the fluid sealing chamber 7. The working fluid filled in the fluid encapsulation chamber 7 is an ER fluid as in the first embodiment.

또한, 상기 유체봉입실(7) 상측과 하측에 각각 통전가능한 재질로 이루어진 플레이트(13)가 설치되고, 이 플레이트(13)는 컨트롤러(15)와 전기적으로 연결되어 컨트롤러(15)로부터 인가되는 전기적인 신호에 의해 통전되도록 구성된다.In addition, a plate 13 made of an electrically conductive material is installed on the upper and lower sides of the fluid sealing chamber 7, and the plate 13 is electrically connected to the controller 15 and applied from the controller 15. It is configured to be energized by a general signal.

따라서, 상기와 같은 구조로 된 서스펜션부시(17)가 일반적인 주행조건에서충격력을 흡수하기 위해서는 컨트롤러(15)로부터 인가되는 제어신호에 따라 플레이트(13)가 통전되면서 유체봉입실(7)주위에 약한 자기장을 형성하여 작동유체의 점성을 낮게 하므로 작동유체가 유체봉입실(7)내에서 오리피스(11)를 통과할 때 유동저항을 작게 하므로써 비교적 낮은 댐핑력을 제공하도록 한다.Accordingly, in order to absorb the impact force under the general driving conditions, the suspension bush 17 having the structure as described above is weak in the fluid enclosing chamber 7 while the plate 13 is energized according to the control signal applied from the controller 15. By forming a magnetic field to lower the viscosity of the working fluid to provide a relatively low damping force by reducing the flow resistance when the working fluid passes through the orifice 11 in the fluid sealing chamber (7).

그리고, 제동시와 같이 차량의 쏠림에 대응하여 서스펜션이 보다 강하게 차체를 지지해야 하는 경우에는, 컨트롤러(15)로부터의 제어신호에 따라 유체봉입실(7) 주위에 강한 자기장을 형성시키도록 하여 작동유체의 점성을 높여주므로써 유체봉입실(7)내에서 작동유체가 오리피스(11)를 통과할 때 유동저항을 보다 크게 하여 비교적 높은 댐핑력을 제공하도록 한다. When the suspension needs to support the vehicle body more strongly in response to the vehicle's tilting, such as during braking, a strong magnetic field is formed around the fluid sealing chamber 7 according to a control signal from the controller 15. By increasing the viscosity of the fluid to increase the flow resistance when the working fluid passes through the orifice 11 in the fluid sealing chamber (7) to provide a relatively high damping force.

이에 따라 본 발명의 제 2실시예에 따른 서스펜션부시(17)는 차량 운행상태에 따라 횡방향에 대해 댐핑력을 발휘하여 차체와 바퀴사이를 능동적으로 제어할 수 있다.  Accordingly, the suspension bush 17 according to the second embodiment of the present invention can actively control the vehicle body and the wheels by exerting a damping force in the lateral direction according to the vehicle driving state.

이상 설명한 바와 같이 본 발명에 따르면, 부시 내부에 ER유체를 충진하여 전압의 세기를 조절하므로써 댐핑값을 차량 주행상황에 따라 최적의 값으로 능동제어할 수 있으며 이로 인해 조정안정성과 승차감을 향상시킬 수 있다.As described above, according to the present invention, the damping value can be actively controlled to an optimal value according to the vehicle driving situation by filling the ER fluid inside the bush to adjust the voltage intensity, thereby improving the adjustment stability and the riding comfort. have.

또한 본 발명은 기계적인 오리피스장치 보다 간단한 구조로 이루어져 중량이 감소되고 단가가 저렴하며 유동되는 부분이 없어 내구성이 향상되는 잇점이 있다.In addition, the present invention is made of a simpler structure than the mechanical orifice device has the advantage of reduced weight, inexpensive unit cost and no durability of the flow portion.

도 1은 본 발명 유체 봉입형 서스펜션 부시의 제 1실시예를 도시한 단면도,1 is a cross-sectional view showing a first embodiment of the fluid-filled suspension bush of the present invention;

도 2는 본 발명 유체 봉입형 서스펜션 부시의 제 2실시예를 도시한 단면도,2 is a cross-sectional view showing a second embodiment of the present invention fluid enclosed suspension bush;

도 3은 도 2에서의 Ⅰ-Ⅰ선 단면도, 3 is a cross-sectional view taken along line II of FIG. 2;

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1 - 케이스 3 - 탄성부재1-Case 3-Elastic Member

5 - 연결빔 7 - 유체봉입실5-connecting beam 7-fluid enclosure

9 - 피스톤 11 - 오리피스9-Piston 11-Orifice

13 - 플레이트 15 - 컨트롤러13-Plate 15-Controller

17 - 서스펜션부시17-Suspension Bushes

Claims (1)

케이스내에 연결빔과 탄성부재가 설치되고, 연결빔과 탄성부재 사이에 유체봉입실이 형성되며, 이 유체봉입실이 복수의 오리피스를 갖는 피스톤을 매개로 구획된 유체봉입형 서스펜션 부시에 있어서,In the case is provided with a connecting beam and an elastic member, a fluid sealing chamber is formed between the connecting beam and the elastic member, the fluid sealing chamber in the fluid-filled suspension bush partitioned via a piston having a plurality of orifices, 상기 유체봉입실(7)에 ER유체가 충진되어 전압의 세기에 비례하여 점성이 조절되도록 구성되며, 상기 케이스(1) 및 유체봉입실(7) 측부가 전극으로 구성되어 컨트롤러(15)로부터 인가되는 제어신호에 따라 자장을 형성하도록 구성된 유체봉입형 서스펜션 부시.The ER fluid is filled in the fluid encapsulation chamber 7 to adjust the viscosity in proportion to the intensity of the voltage, and the side of the case 1 and the fluid encapsulation chamber 7 are composed of electrodes to be applied from the controller 15. A fluid-enclosed suspension bush configured to form a magnetic field in response to a control signal.
KR1020030100283A 2003-12-30 2003-12-30 Suspension bush of fluid sealed type KR20050070578A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570376A (en) * 2015-12-31 2016-05-11 浙江科技学院 Electrorheological fluid shock absorber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570376A (en) * 2015-12-31 2016-05-11 浙江科技学院 Electrorheological fluid shock absorber
CN105570376B (en) * 2015-12-31 2017-10-13 浙江科技学院 Electrorheological fluid vibration damper

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