KR100667426B1 - Roll Stiffness Control of Stabilizer Bar - Google Patents

Roll Stiffness Control of Stabilizer Bar Download PDF

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Publication number
KR100667426B1
KR100667426B1 KR1020050077207A KR20050077207A KR100667426B1 KR 100667426 B1 KR100667426 B1 KR 100667426B1 KR 1020050077207 A KR1020050077207 A KR 1020050077207A KR 20050077207 A KR20050077207 A KR 20050077207A KR 100667426 B1 KR100667426 B1 KR 100667426B1
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South Korea
Prior art keywords
stabilizer bar
friction
roll stiffness
control device
friction pad
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KR1020050077207A
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Korean (ko)
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오영민
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기아자동차주식회사
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    • 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
    • B60G21/04—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 mechanically
    • B60G21/05—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 mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/055—Stabiliser bars
    • B60G21/0551—Mounting means therefor
    • B60G21/0553—Mounting means therefor adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/006—Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor
    • 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
    • B60G2204/11—Mounting of sensors thereon
    • B60G2204/114—Steering column mounted sensors
    • 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
    • B60G2204/43—Fittings, brackets or knuckles
    • 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
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/427—Stabiliser bars or tubes
    • 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
    • B60G2400/20—Speed
    • B60G2400/204—Vehicle speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/22—Magnetic elements
    • B60G2600/26—Electromagnets; Solenoids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/72—Cooling or warming means
    • 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
    • B60G2800/90—System Controller type
    • B60G2800/97—Engine Management System [EMS]
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type

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

Abstract

본 발명은 스태빌라이저 바아의 롤강성 제어장치에 관한 것으로, 차량의 주행 상황에 따라 스태빌라이저 바아의 롤 강성값을 적절히 가변시켜 능동적이고 효과적으로 대처해서 승차감과 주행안정성을 동시에 추구하기 위해, 스태빌라이저 바아의 외주면에 부착된 마찰재와, 이 마찰재와 소정 간격을 두고 배치된 마찰패드, 이 마찰패드와 마찰재사이의 마찰상태를 조절하는 조절수단을 구비하고 있다.The present invention relates to a roll stiffness control device of the stabilizer bar, and in order to actively and effectively cope with the roll stiffness value of the stabilizer bar according to the driving conditions of the vehicle, to simultaneously pursue riding comfort and driving stability, And an attached friction material, a friction pad disposed at a predetermined distance from the friction material, and adjustment means for adjusting a friction state between the friction pad and the friction material.

Description

스태빌라이저 바의 롤강성 제어장치{Device for controlling roll stiffness of stabilizer bar}Device for controlling roll stiffness of stabilizer bar

도 1은 본 발명에 따른 스태빌라이저 바아의 롤강성 제어장치의 횡단면도,1 is a cross-sectional view of the roll stiffness control device of the stabilizer bar according to the present invention,

도 2는 본 발명에 따른 스태빌라이저 바아의 롤강성 제어장치의 종단면도이다.2 is a longitudinal sectional view of the roll stiffness control device of the stabilizer bar according to the present invention.

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

1-스태빌라이저 바아 2-마찰재1-stabilizer bar 2-friction

3-마찰패드 4-전자석3-friction pad 4-electromagnet

5-부시 6-브라켓5-Bush 6-Bracket

7-센서 8-냉각수통로7-sensor 8-cooling water passage

본 발명은 차량에 사용되는 스태빌라이저 바아에 관한 것으로, 특히 차량의 주행 상태에 따라 스태빌라이저 바아의 롤강성을 마찰재와 전자기력을 이용해서 적절히 제어하도록 된 스태빌라이저 바아의 롤강성 제어장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stabilizer bar for use in a vehicle, and more particularly, to a roll stiffness control device of a stabilizer bar adapted to appropriately control the roll stiffness of the stabilizer bar by using friction materials and electromagnetic forces according to the running state of the vehicle.

일반적으로 차량의 현가장치는 차축과 차체를 연결하여 주행 중에 차축이 노면으로부터 받는 진동이나 충격을 차체에 직접적으로 전달되지 않도록 제어하여 차 체와 화물의 손상을 방지하고 승차감을 향상시키는 장치로서 노면으로부터 충격을 완화시키는 새시 스프링과, 새시 스프링의 자유진동을 제어하여 승차감을 향상시키는 쇽 업소버 및, 차량의 롤링을 방지하는 스태빌라이저 등으로 구성된다.In general, the suspension system of the vehicle connects the axle and the body so that the vibrations or shocks received from the road surface are not transmitted directly to the body while driving, thereby preventing damage to the body and cargo and improving ride comfort. It is composed of a chassis spring for mitigating impact, a shock absorber for controlling the free vibration of the chassis spring to improve ride comfort, and a stabilizer for preventing rolling of the vehicle.

상기 스태빌라이저는 좌우의 로어 현가 아암에 그 양단이 장착되어 좌우의 바퀴가 서로 동시에 상하운동을 하는 경우에는 작용하지 않지만, 좌우의 바퀴가 서로 반대방향으로 작용하는 경우에는 비틀려져 그 때에 발생하는 스프링 복원력으로 차체의 기울기를 감소시키는 역할을 한다.The stabilizer does not work when both ends are mounted to the left and right lower suspension arms and the left and right wheels simultaneously move up and down, but the left and right wheels are twisted when the left and right wheels act in opposite directions to each other. This reduces the inclination of the body.

상기 스태빌라이저는 대체로 ??자 형상으로 절곡된 바아 형상을 하고서 차체의 횡방향을 따라 배치되어 지지되고, 그 양단은 크로스 멤버에 회동가능하게 체결되는 로어아암의 선단부에 링크를 매개로 연결된다.The stabilizer has a bar shape that is generally bent in a? -Shape and is arranged and supported along the transverse direction of the vehicle body, and both ends thereof are connected via a link to the distal end of the lower arm that is rotatably fastened to the cross member.

이에 따라, 차륜의 너클에 장착된 상기 좌우 양측의 로어 아암이 크로스 멤버에 지지된 상태로 회동될 때에 상기 스태빌라이저 바아의 비틀림 복원력을 매개로 좌우 양측의 차륜을 안정시켜 주게 된다.As a result, when the left and right lower arm mounted on the knuckle of the wheel is rotated while being supported by the cross member, the wheels on both the left and right sides are stabilized by the torsional restoring force of the stabilizer bar.

상기와 같은 종래의 스태빌라이저 바아의 거동 특성은 스태빌라이저 바아의 롤 강성값에 의해서 결정되는 데, 롤 강성값은 스태빌라이저 바아의 형상과 재질, 스태빌라이저 바아를 끼워서 지지하는 부시와 브라켓의 장착위치와 로어 아암의 장착 위치에 따라 결정된다.The behavior of the conventional stabilizer bar is determined by the roll stiffness value of the stabilizer bar, and the roll stiffness value is determined by the shape and material of the stabilizer bar, the mounting position of the bush and the bracket supporting the stabilizer bar, and the lower arm. It depends on the mounting position.

그런데, 상기와 같은 종래의 스태빌라이저 바아 시스템의 경우는 고정된 롤 강성값을 갖고 있기 때문에 여러 가지 주행 상황에 능동적이고 효과적으로 대처하기가 어려운 결점이 있었다. 즉, 예컨대 직진 주행시에 노면의 잔진동을 흡수하여 부드러운 승차감을 얻기 위해서는 롤 강성값이 작은 것이 좋으나, 조향시에는 롤링 방지를 위해 롤 강성값이 큰 것이 안전한 데, 종래에는 스태빌라이저 바아 시스템이 고정된 하나의 롤 강성값을 갖고 있기 때문에 여러 주행 상황에 따라 효과적으로 대처하기가 미흡하다고 하는 결점이 있었다.However, in the conventional stabilizer bar system as described above, since it has a fixed roll stiffness value, it is difficult to proactively and effectively cope with various driving situations. That is, it is preferable that the roll stiffness value is small in order to absorb the residual vibration of the road surface and get a smooth ride feeling, for example, but the roll stiffness value is safe to prevent rolling during steering, but the stabilizer bar system is conventionally fixed. Because of its roll stiffness value, there was a drawback that it was insufficient to cope effectively with various driving situations.

이에 본 발명은 상기와 같은 사정을 감안하여 안출된 것으로, 차량의 주행 상황에 따라 스태빌라이저 바아의 롤 강성값을 적절히 가변시켜 능동적이고 효과적으로 대처해서 승차감과 주행안정성을 동시에 추구할 수 있도록 된 스태빌라이저 바아의 롤강성 제어장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above circumstances, and stabilizes the stabilizer bar according to the driving conditions of the stabilizer bar. The purpose is to provide a roll rigidity control device.

상기와 같은 목적을 달성하기 위한 본 발명은, 스태빌라이저 바아의 외주면에 부착된 마찰재와, 이 마찰재와 소정 간격을 두고 배치된 마찰패드, 이 마찰패드와 마찰재사이의 마찰상태를 조절하는 조절수단을 구비하고 있다.The present invention for achieving the above object is provided with a friction material attached to the outer peripheral surface of the stabilizer bar, a friction pad disposed at a predetermined distance from the friction material, the adjusting means for adjusting the friction state between the friction pad and the friction material Doing.

바람직하기로는, 상기 조절수단이 상기 마찰패드에 장착되어 전원을 공급하면 자력을 발생시켜 마찰패드가 마찰재와 접촉되게 하는 전자석과, 조향센서와 차속센서 및 차량진동센서를 매개로 차량의 주행 상황을 판단하여 상기 전자석에 공급되는 전원을 제어하는 엔진제어장치를 갖춘 것을 특징으로 한다.Preferably, the control means is mounted to the friction pad to supply power to the electromagnet to generate a magnetic force so that the friction pad is in contact with the friction material, the steering sensor, the vehicle speed sensor and the vehicle vibration sensor to track the driving situation of the vehicle It is characterized in that it comprises an engine control device for controlling the power supplied to the electromagnet.

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

도 1에는 본 발명에 따른 스태빌라이저 바아의 롤강성 제어장치가 횡단면으로 도시되어 있고, 도 2에는 본 발명에 따른 스태빌라이저 바아의 롤강성 제어장치 가 종단면으로 도시되어 있는 바, 즉 대체로 원형을 이루는 스태빌라이저 바아(1)의 외주면에는 마찰재(2)가 일체로 부착되어 있고, 이 마찰재(2)와 소정 간격을 두고 원호 형상의 2개의 마찰패드(3)가 배치되어 있다.1 shows a roll stiffness control device of the stabilizer bar according to the present invention in a cross-sectional view, and FIG. 2 shows a roll stiffness control device of the stabilizer bar according to the present invention in a longitudinal cross section, that is, a generally rounded stabilizer bar. A friction material 2 is integrally attached to the outer circumferential surface of (1), and two friction pads 3 having an arc shape are arranged at predetermined intervals from the friction material 2.

상기 마찰패드(3)에는 전원을 공급하면 자력을 발생시키는 전자석(4)이 각각 부착되어 있고, 상기 스태빌라이저 바아(1)와 마찰패드(3) 및 전자석(4)을 감싸서 부시(5)가 장착되어 있는 한편, 이들을 감싸서 차체에 지지시키기 위해 브라켓(6)이 설치되어 있다.The friction pad 3 is attached to an electromagnet 4 which generates magnetic force when the power is supplied, and the bush 5 is mounted by wrapping the stabilizer bar 1, the friction pad 3, and the electromagnet 4. On the other hand, the bracket 6 is provided in order to wrap these and support them on a vehicle body.

상기 전자석(4)은 예컨대 엔진제어장치(ECU)에 연결되어 엔진제어장치를 통해서 제어되게 되어 있고, 상기 엔진제어장치에는 조향센서나 차속센서 차량진동센서(7) 등의 각종 센서들이 연결되어 있다.The electromagnet 4 is connected to, for example, an engine control unit (ECU) to be controlled through the engine control unit. The engine control unit is connected to various sensors such as a steering sensor and a vehicle speed sensor vehicle vibration sensor 7. .

상기 부시(5)나 혹은 부시(5)와 브라켓(6) 사이의 적절한 위치에는 상기 마찰재(2)와 마찰패드(3)사이의 마찰로 인해 발생하는 열을 적절히 냉각시켜 주기 위한 냉각장치로서 냉각수 통로(8)가 설치되어 있다.Cooling water as a cooling device for appropriately cooling the heat generated by the friction between the friction material (2) and the friction pad (3) at the appropriate position between the bush (5) or the bush (5) and the bracket (6) The passage 8 is provided.

이에 따라, 차량의 주행 상황에 따라 상기 마찰재(2)와 마찰패드(3)사이의 마찰 상태를 상기 전자석(4)을 매개로 적절히 제어해주면 스태빌라이저 바아(1)의 롤 강성값을 가변시킬 수 있는 바, 상기 마찰재(2)와 마찰패드(3)사이의 마찰력에 비례해서 스태빌라이저 바아(1)의 롤 강성값이 가변되게 된다.Accordingly, when the friction state between the friction material 2 and the friction pad 3 is properly controlled through the electromagnet 4 according to the driving condition of the vehicle, the roll stiffness value of the stabilizer bar 1 can be varied. The roll stiffness value of the stabilizer bar 1 is varied in proportion to the friction force between the bar 2 and the friction pad 3.

예컨대, 평탄한 도로에서의 직진 주행시에는 차량의 롤링을 방지하기 위해 상기 전자석에 상대적으로 큰 전력을 엔진제어장치를 통해 가해주면 전자석(4)사이에 큰 인력이 발생되어 마찰재와 마찰패드 사이의 마찰력이 비례해서 증가됨과 더 불어 스태빌라이저 바아(1)의 롤 강성값도 비례해서 증가되게 된다.For example, when driving straight on a flat road, when a relatively large electric power is applied to the electromagnet through an engine control device to prevent rolling of the vehicle, a large attraction force is generated between the electromagnets 4 so that the friction force between the friction material and the friction pad is increased. In addition to being increased proportionally, the roll stiffness value of the stabilizer bar 1 is also increased proportionally.

그러나, 거친 험로 주행시에는 차량의 승차감을 향상시키기 위해 상기 전자석에 전력을 가하지 않거나 약간의 전력만 가해서 마찰력이 적게 발생되도록 하면 스태빌라이저 바아에 의한 롤 강성값이 작아지게 되므로, 스태빌라이저 바아가 노면으로부터의 진동이나 충격을 적절히 흡수해서 차량의 승차감을 향상시킬 수 있게 된다.However, during rough rough road driving, if the friction force is generated by applying little electric power to the electromagnet or only a little electric power to improve the ride comfort of the vehicle, the roll stiffness value of the stabilizer bar is reduced, so that the stabilizer bar vibrates from the road surface. The shock absorber and the shock can be properly absorbed to improve the riding comfort of the vehicle.

상기 전자석에 가하는 전력의 크기는 상기 엔진제어장치에 의해 결정되는 바, 상기 엔진제어장치는 상기 센서들로부터 입력되는 각종 신호를 매개로 주행 상황을 판단한 다음에 미리 입력되어 있거나 혹은 적절히 로직으로 계산된 전력을 상기 전자석에 가해서 마찰재와 마찰패드간의 마찰력의 크기를 제어하여 스태빌라이저 바아의 롤 강성값을 조절하게 된다.The magnitude of power applied to the electromagnet is determined by the engine controller, and the engine controller determines a driving situation based on various signals input from the sensors, and is then inputted in advance or appropriately calculated by logic. The power is applied to the electromagnet to control the amount of friction between the friction material and the friction pad to adjust the roll stiffness value of the stabilizer bar.

이상 설명한 바와 같이 본 발명에 따른 스태빌라이저 바아의 롤강성 제어장치에 의하면, 차량의 주행 상황에 따라 스태빌라이저 바아의 롤 강성값을 마찰재와 마찰패드 및 전자석을 이용하여 적절히 제어하여 줌으로써, 차량의 승차감과 주행 안정성을 동시에 향상시킬 수 있는 등의 효과가 있다.As described above, according to the roll stiffness control device of the stabilizer bar according to the present invention, the roll stiffness value of the stabilizer bar is appropriately controlled by using a friction material, a friction pad, and an electromagnet according to the driving condition of the vehicle, thereby making the vehicle comfortable and running. There are effects such as stability can be improved at the same time.

Claims (5)

스태빌라이저 바아의 외주면에 부착된 마찰재와, 이 마찰재와 소정 간격을 두고 배치된 마찰패드, 이 마찰패드와 마찰재사이의 마찰상태를 조절하는 조절수단을 구비한 스태빌라이저 바아의 롤강성 제어장치.A roll stiffness control device of a stabilizer bar having a friction material attached to an outer circumferential surface of a stabilizer bar, a friction pad disposed at a predetermined distance from the friction material, and an adjusting means for adjusting a friction state between the friction pad and the friction material. 제 1항에 있어서, 상기 조절수단이 상기 마찰패드에 장착되어 전원을 공급하면 자력을 발생시켜 마찰패드가 마찰재와 접촉되게 하는 전자석과, 조향센서와 차속센서 및 차량진동센서를 매개로 차량의 주행 상황을 판단하여 상기 전자석에 공급되는 전원을 제어하는 엔진제어장치를 갖춘 것을 특징으로 하는 스태빌라이저 바아의 롤강성 제어장치.The vehicle according to claim 1, wherein the control means is mounted on the friction pad to supply power to generate a magnetic force so that the friction pad contacts the friction material, the steering sensor, the vehicle speed sensor, and the vehicle vibration sensor. Roll stiffness control device of the stabilizer bar, characterized in that the engine control device for controlling the power supplied to the electromagnet to determine the situation. 제 2항에 있어서, 상기 마찰패드를 감싸서 부시가 설치되고, 이 부시를 감싸서 스태빌라이저 바아를 차체에 지지시키는 브라켓이 설치된 것을 특징으로 하는 스태빌라이저 바아의 롤강성 제어장치. 3. The roll stiffness control device according to claim 2, wherein a bush is provided to surround the friction pad, and a bracket is provided to surround the bush to support the stabilizer bar on the vehicle body. 제 3항에 있어서, 상기 부시 혹은 부시와 브라켓 사이의 소정 부위에는 마찰재와 마찰패드사이에 발생하는 열을 냉각시켜주는 냉각장치가 설치된 것을 특징으로 하는 스태빌라이저 바아의 롤강성 제어장치.4. The roll stiffness control device of the stabilizer bar according to claim 3, wherein a cooling device for cooling heat generated between the friction material and the friction pad is installed at a predetermined portion between the bush or the bush and the bracket. 제 4항에 있어서, 상기 냉각장치가 엔진의 냉각수를 이용하도록 냉각수 통로를 구비한 것을 특징으로 하는 특징으로 하는 스태빌라이저 바아의 롤강성 제어장치. 5. The roll stiffness control device of the stabilizer bar according to claim 4, wherein the cooling device has a cooling water passage so as to use the cooling water of the engine.
KR1020050077207A 2005-08-23 2005-08-23 Roll Stiffness Control of Stabilizer Bar Expired - Fee Related KR100667426B1 (en)

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