KR20050110465A - Coil spring characteristics variable system of front suspension system - Google Patents
Coil spring characteristics variable system of front suspension system Download PDFInfo
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- KR20050110465A KR20050110465A KR1020040035487A KR20040035487A KR20050110465A KR 20050110465 A KR20050110465 A KR 20050110465A KR 1020040035487 A KR1020040035487 A KR 1020040035487A KR 20040035487 A KR20040035487 A KR 20040035487A KR 20050110465 A KR20050110465 A KR 20050110465A
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- bush
- shock absorber
- coil spring
- vehicle
- groove
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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
- B60G17/015—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
-
- 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
- B60G17/0152—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 action on a particular type of suspension unit
- B60G17/0157—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 action on a particular type of suspension unit non-fluid unit, e.g. electric motor
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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
- B60G17/015—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
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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
- B60G17/015—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
- B60G17/019—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 type of sensor or the arrangement thereof
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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
- B60G17/015—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
- B60G17/019—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 type of sensor or the arrangement thereof
- B60G17/01933—Velocity, e.g. relative velocity-displacement sensors
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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
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/124—Mounting of coil springs
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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
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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
- B60G2204/419—Gears
- B60G2204/4192—Gears rack and pinion
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- 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
- B60G2206/8207—Joining by screwing
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/04—Buffer means for limiting movement of arms
Abstract
본 발명은 프런트서스펜션의 코일스프링 특성 가변장치에 관한 것으로, 볼조인트(3)로부터 근접된 로어암(4)의 소정부위에서 차체의 전후방향을 향하도록 관통되고 이 관통방향에 대해 직교되는 로어암(4)의 길이방향을 따라 형성되는 타원모양의 부시홈(4c)과, 상기 부시홈(4c)내에 삽입되어 쇽업소버(8)의 하단부인 포크(9)와 결합되는 쇽업소버부시(12)와, 차량의 주행상태를 검출하기 위해 차속센서(31)와 조향센서(33) 및 진동센서(35)를 포함하여 구성되는 입력수단(30)과, 상기 쇽업소버부시(12)와 일체로 결합되고 상기 부시홈(4c)으로부터 근접한 차체(41)측에 고정되도록 설치되어 상기 부시홈(4c)을 따라 쇽업소버부시(12)를 직선왕복 이동시키도록 작동하는 부시이동수단(50)과, 상기 입력수단(30)의 신호를 이용해 상기 부시이동수단(50)의 구동을 제어하는 콘트롤러(60)로 구성되어져, 차량의 주행상태에 따라 코일스프링(11)의 특성이 가변됨으로써 승차감과 주행안정성의 향상을 동시에 구현할 수 있도록 된 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for varying coil spring characteristics of a front suspension, the lower arm being penetrated toward a front and rear direction of the vehicle body at a predetermined portion of the lower arm 4 proximate from the ball joint 3 and orthogonal to the penetration direction. An elliptical bush groove 4c formed along the lengthwise direction of (4), and a shock absorber bush 12 inserted into the bush groove 4c and engaged with a fork 9 which is a lower end of the shock absorber 8. And an input means 30 including a vehicle speed sensor 31, a steering sensor 33, and a vibration sensor 35 for detecting a driving state of the vehicle, and integrally coupled with the shock absorber bush 12. And a bush moving means (50) installed to be fixed to the vehicle body (41) side adjacent from the bush groove (4c) and operative to move the shock absorber bush (12) in a straight reciprocating direction along the bush groove (4c); Controlling the driving of the bush moving means 50 by using the signal of the input means 30 Being configured as a controller 60, the characteristics of the coil spring 11 is changed according to the driving state of the vehicle, so that it is possible to simultaneously realize the riding comfort and driving stability.
Description
본 발명은 프런트서스펜션의 코일스프링 특성 가변장치에 관한 것으로, 특히 차량의 주행상태에 따라 코일스프링의 특성(스프링상수 값)을 적절하게 가변시킬 수 있도록 하여 승차감 및 주행안정성의 향상을 동시에 구현할 수 있도록 하는 프런트서스펜션의 코일스프링 특성 가변장치에 관한 것이다.The present invention relates to a coil spring characteristic variable device of the front suspension, and in particular to be able to appropriately vary the characteristics (spring constant value) of the coil spring according to the driving state of the vehicle to realize a ride comfort and driving stability at the same time It relates to a coil spring characteristic variable device of the front suspension.
일반적으로, 차량의 서스펜션은 승차감 및 주행안정성을 도모하기 위한 중요한 장치로써, 주로 차체를 차륜으로부터 안정적으로 지지하면서 차륜으로부터 제공되는 진동을 억제하거나 또는 신속하게 감소시키는 기능을 수행하게 된다.In general, the suspension of the vehicle is an important device for achieving ride comfort and driving stability, and mainly serves to stably support the vehicle body from the wheel while suppressing or rapidly reducing the vibration provided from the wheel.
상기와 같은 서스펜션은 크게 프런트서스펜션과 리어서스펜션으로 분류되며, 그중 승차감이나 또는 조정안정성을 중요시하는 승용차의 프런트서스펜션에는 상하 한 쌍의 암으로 바퀴를 현가(懸架)하는 더블 위시본형 프런트서스펜션이 가장 많이 사용된다.Such suspension is classified into front suspension and suspension suspension, and among them, the front suspension of the passenger car which emphasizes riding comfort or adjustment stability is the most double double-bone type front suspension that suspends the wheels with a pair of upper and lower arms. Used.
한편, 도 1 내지 도 3에는 더블 위시본형 프런트서스펜션의 일반적인 구성이 도시되어 있다.1 to 3 show a general configuration of the double wishbone front suspension.
즉, 차륜(1)이 결합되는 너클(2)의 하단은 볼조인트(3)를 통해 로어암(4)과 결합되고, 상기 로어암(4)은 나머지 두 개의 단부를 통해 서브프레임(도시않됨)과 결합된다.That is, the lower end of the knuckle 2 to which the wheel 1 is coupled is coupled to the lower arm 4 through the ball joint 3, and the lower arm 4 is connected to the subframe through the remaining two ends (not shown). ) Is combined.
또한, 상기 너클(3)의 상단은 볼조인트(5)를 통해 어퍼암(6)과 결합되며, 상기 어퍼암(6)은 나머지 두 개의 단부를 통해 쇽업소버하우징패널(7)에 결합된다.In addition, the upper end of the knuckle (3) is coupled to the upper arm (6) through the ball joint (5), the upper arm (6) is coupled to the shock absorber housing panel (7) through the remaining two ends.
그리고, 쇽업소버(8)의 하단은 포크(9)를 통해 상기 로어암(4)에 고정되도록 결합되고, 반대편의 상단은 어퍼암(6)의 중간부위를 통과하여 상기 쇽업소버하우징패널(7)에 결합된다.The lower end of the shock absorber 8 is coupled to the lower arm 4 via a fork 9, and the upper end of the shock absorber 8 passes through an intermediate portion of the upper arm 6 to the shock absorber housing panel 7. ) Is combined.
또한, 상기 쇽업소버(8)의 외주면에는 코일스프링(11)이 감겨지는 형태로서 존재하게 되는 바, 상기 코일스프링(11)의 양단은 쇽업소버(8)의 외주면에 일체로 결합된 상단시트(8a) 및 하단시트(8b)에 의해 그 위치가 고정되도록 결합되어 진다.In addition, the coil spring 11 is wound around the outer circumferential surface of the shock absorber 8, and both ends of the coil spring 11 are integrally coupled to the outer circumferential surface of the shock absorber 8. 8a) and the bottom sheet 8b are combined to fix their positions.
여기서, 상기 쇽업소버(8)의 하단부에 해당하는 포크(9)의 결합구조에 대해 좀더 상세하게 설명하기로 한다.Here, the coupling structure of the fork 9 corresponding to the lower end of the shock absorber 8 will be described in more detail.
즉, 상기 볼조인트(3)에서 근접거리로 이격된 로어암(4)의 소정부위에는 차체의 전후방향으로 관통하는 정원모양의 부시홈(4a)이 형성되고, 상기 부시홈(4a)에는 쇽업소버부시(12)가 삽입 고정된다.That is, a predetermined bush groove 4a penetrating in the front and rear direction of the vehicle body is formed at a predetermined portion of the lower arm 4 spaced from the ball joint 3 at a close distance, and the bush groove 4a The absorber bush 12 is inserted and fixed.
이에 따라, 상기 포크(9)의 양단은 쇽업소버부시(12)의 양단에 덧대어져서 볼트(13)와 너트(14)의 체결력을 통해 결합되어짐으로써 설치되어 진다.Accordingly, both ends of the fork 9 are attached to both ends of the shock absorber bush 12 so that the bolts 13 and the nut 14 are coupled to each other by the coupling force.
한편, 도 1에 도시된 미설명부호 15는 차륜(1)과 결합되어지는 드라이브샤프트(15)를 도시한 것이다.Meanwhile, reference numeral 15 illustrated in FIG. 1 illustrates a drive shaft 15 that is coupled to the wheel 1.
따라서, 상기와 같이 구성되는 종래의 더블 위시본형 프런트서스펜션은 차량의 주행중 노면으로부터 전달되어오는 충격 및 진동에 대해 쇽업소버(8)의 감쇠력 및 코일스프링(11)의 탄성력을 통해 최적의 승차감이나 또는 안정된 조정성을 구현하게 된다.Therefore, the conventional double wishbone type front suspension configured as described above has an optimum riding comfort through the damping force of the shock absorber 8 and the elastic force of the coil spring 11 against the shock and vibration transmitted from the road surface of the vehicle during driving. Stable adjustability is achieved.
그러나, 상기의 구조는 차량의 주행상태에 따라 최적의 승차감과 안정된 조정성을 동시에 구현할 수 없는 구조이기 때문에, 차종에 따라 어느 한쪽의 특성을 배제시켜야만 하며, 이에 따라 승차감을 중요시하는 차량에서는 선회주행시 조정안정성이 나빠지는 단점과 조향핸들이 회전되는 방향의 좌우측으로 흔들리는 시미(shimmy)현상 및 고속주행시 제동력이 발생될 때 조향핸들이나 대시패널에서 소음 또는 진동이 발생되는 저더(juder)현상이 발생되는 단점을 갖게 된다.However, since the above structure is a structure that can not realize the optimum ride comfort and stable control at the same time according to the driving state of the vehicle, one of the characteristics must be excluded according to the vehicle type, and therefore, in a vehicle that emphasizes riding comfort when turning The disadvantages of poor stability of adjustment and shimmy phenomenon in which the steering wheel shakes to the left and right in the direction in which the steering wheel is rotated, and judder that cause noise or vibration in the steering wheel or dash panel when braking force is generated during high-speed driving You have a downside.
반대로, 조정안정성을 중요시하는 차량에서는 승차감이 나빠지게 됨과 동시에 로드 노이즈(load noise)가 심하게 발생되는 문제점이 있게 된다.On the contrary, in a vehicle that emphasizes the stability of adjustment, there is a problem in that the riding comfort becomes worse and the load noise is severely generated.
이에 본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 차량의 주행상태에 따라 코일스프링의 탄성력을 가변시킬 수 있도록 함으로써, 승차감과 주행안정성을 동시에 구현할 수 있도록 함은 물론, 이에 따라 로드 노이즈의 감소와 시미현상 및 저더현상의 발생도 미리 예방할 수 있도록 하는 프런트서스펜션의 코일스프링 특성 가변장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by varying the elastic force of the coil spring according to the driving state of the vehicle, to realize the riding comfort and driving stability at the same time, according to the road noise An object of the present invention is to provide a coil spring characteristic variable device of a front suspension, which can prevent the occurrence of microscopic phenomenon and the phenomenon of microscopic phenomenon and judging in advance.
상기와 같은 목적을 달성하기 위한 본 발명의 코일스프링 특성 가변장치는, 볼조인트로부터 근접된 로어암의 소정부위에서 차체의 전후방향을 향하도록 관통되고 이 관통방향에 대해 직교되는 로어암의 길이방향을 따라 형성되는 타원모양의 부시홈과, 상기 부시홈내에 삽입되어 쇽업소버의 하단부인 포크와 결합되는 쇽업소버부시와, 차량의 주행상태를 검출하기 위해 차속센서와 조향센서 및 진동센서를 포함하여 구성되는 입력수단과, 상기 쇽업소버부시와 일체로 결합되고 상기 부시홈으로부터 근접한 차체측에 고정되도록 설치되어 상기 부시홈을 따라 쇽업소버부시를 직선왕복 이동시키도록 작동하는 부시이동수단과, 상기 입력수단의 신호를 이용해 상기 부시이동수단의 구동을 제어하는 콘트롤러로 구성되는 것을 특징으로 한다.The coil spring characteristic variable device of the present invention for achieving the above object is a longitudinal direction of the lower arm penetrated toward the front and rear direction of the vehicle body at a predetermined portion of the lower arm proximal from the ball joint and orthogonal to the penetrating direction. An elliptical bush groove formed along the shock absorber bush, which is inserted into the bush groove and is coupled to a fork that is the lower end of the shock absorber, and includes a vehicle speed sensor, a steering sensor, and a vibration sensor to detect a driving state of the vehicle. An input means configured to be integrally coupled with the shock absorber bush and fixed to the side of the vehicle body adjacent to the bush groove, the bush moving means operative to linearly move the shock absorber bush along the bush groove; Characterized in that it comprises a controller for controlling the drive of the bush moving means using a signal of the means.
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 4와 도 5는 본 발명에 따라 코일스프링 특성 가변장치를 포함하여 구성되는 프런트서스펜션의 평면도 및 측면도로서, 종래 구조와 동일한 부위에는 동일한 참조부호를 붙이면서 설명하기로 한다.4 and 5 are a plan view and a side view of a front suspension including a coil spring characteristic variable device according to the present invention, and the same parts as in the conventional structure will be described with the same reference numerals.
본 발명은 차량의 주행상태에 따라 더블 위시본형 프런트서스펜션을 구성하는 코일스프링의 탄성력을 자동적으로 가변시키도록 하여 승차감과 조정안정성을 동시에 구현할 수 있도록 된 것이다.The present invention is to realize a ride comfort and adjustment stability by automatically varying the elastic force of the coil spring constituting the double wishbone front suspension according to the driving state of the vehicle.
즉, 더블 위시본형 프런트서스펜션의 일반적인 구성은 도 1츨 참조로 전술하였던 바와 같이, 차륜(1; 도3과 도6에 도시됨)이 결합되는 너클(2)의 하단은 볼조인트(3)를 통해 로어암(4)과 결합되고, 상기 로어암(4)은 나머지 두 개의 단부를 통해 서브프레임(도시않됨)과 결합된다.That is, the general configuration of the double wishbone front suspension is described above with reference to FIG. 1. As shown in FIG. 1, the lower end of the knuckle 2 to which the wheel 1 (shown in FIGS. 3 and 6) is coupled to the ball joint 3. Through the lower arm (4), the lower arm (4) is coupled to the subframe (not shown) through the other two ends.
또한, 상기 너클(3)의 상단은 볼조인트(5)를 통해 어퍼암(6)과 결합되며, 상기 어퍼암(6)은 나머지 두 개의 단부를 통해 쇽업소버하우징패널(7)에 결합된다.In addition, the upper end of the knuckle (3) is coupled to the upper arm (6) through the ball joint (5), the upper arm (6) is coupled to the shock absorber housing panel (7) through the remaining two ends.
그리고, 쇽업소버(8)의 하단은 포크(9)를 통해 상기 로어암(4)에 고정되도록 결합되고, 반대편의 상단은 어퍼암(6)의 중간부위를 통과하여 상기 쇽업소버하우징패널(7)에 결합된다.The lower end of the shock absorber 8 is coupled to the lower arm 4 via a fork 9, and the upper end of the shock absorber 8 passes through an intermediate portion of the upper arm 6 to the shock absorber housing panel 7. ) Is combined.
또한, 상기 쇽업소버(8)의 외주면에는 코일스프링(11)이 감겨지는 형태로서 존재하게 되는 바, 상기 코일스프링(11)의 양단은 쇽업소버(8)의 외주면에 일체로 결합된 상단시트(8a) 및 하단시트(8b)에 의해 그 위치가 고정되도록 결합되어 진다.In addition, the coil spring 11 is wound around the outer circumferential surface of the shock absorber 8, and both ends of the coil spring 11 are integrally coupled to the outer circumferential surface of the shock absorber 8. 8a) and the bottom sheet 8b are combined to fix their positions.
여기서, 상기 쇽업소버(8)의 하단부에 해당하는 포크(9)의 결합구조에 대해 도 4와 도 5를 참조하여 보다 상세하게 설명하기로 한다.Here, the coupling structure of the fork 9 corresponding to the lower end of the shock absorber 8 will be described in more detail with reference to FIGS. 4 and 5.
즉, 상기 볼조인트(3)에서 근접거리로 이격된 로어암(4)의 소정부위에는 차체의 전후방향을 향하도록 관통되고 이 관통방향에 대해 직교되는 로어암(4)의 길이방향을 따라 타원모양의 부시홈(4c)이 형성된다.That is, a predetermined portion of the lower arm 4 spaced apart from the ball joint 3 at an adjacent distance is elliptical along the longitudinal direction of the lower arm 4 which is penetrated toward the front and rear direction of the vehicle body and orthogonal to the penetrating direction. Shaped bush groove 4c is formed.
그리고, 상기 부시홈(4a)에는 쇽업소버부시(12)가 삽입되어 설치되는 바, 상기 쇽업소버부시(12)는 외력작용시 상기 부시홈(4c)을 따라 직선왕복 이동이 가능하도록 설치된다.In addition, the shock absorber bush 12 is inserted into and installed in the bush groove 4a, and the shock absorber bush 12 is installed to allow a straight reciprocating movement along the bush groove 4c when an external force is applied.
이에 따라, 상기 포크(9)의 양단은 쇽업소버부시(12)의 양단에 덧대어져서 볼트(13)와 너트(14)의 체결력을 통해 결합되어짐으로써 설치되어 진다.Accordingly, both ends of the fork 9 are attached to both ends of the shock absorber bush 12 so that the bolts 13 and the nut 14 are coupled to each other by the coupling force.
한편, 본 발명에 따라 코일스프링(8)의 특성을 가변시키기 위한 장치는 도시된 바와 같이, 상기 타원모양의 부시홈(4c) 및 상기 쇽업소버부시(12)를 포함하여 구성될 뿐만 아니라, 그 외에도 차량의 주행상태를 검출하기 위해 차속센서(31)와 조향센서(33) 및 진동센서(35)를 포함하여 구성되는 입력수단(30)과, 상기 포크(9)가 볼트(13)와 너트(14)에 의해 쇽업소버부시(12)에 덧대어져서 결합될 때 상기 포크(9)의 일측부로 덧대어져서 쇽업소버부시(12)와 일체로 결합됨은 물론 상기 부시홈(4c)으로부터 근접한 차체(41)측에 고정되도록 설치되어 상기 부시홈(4c)을 따라 쇽업소버부시(12)를 직선왕복 이동시키도록 작동하는 부시이동수단(50)과, 상기 입력수단(30)의 신호를 이용해 상기 부시이동수단(50)의 구동을 제어하는 콘트롤러(60)를 포함하여 구성된다.On the other hand, the device for varying the characteristics of the coil spring 8 according to the present invention, as shown, not only comprises the elliptical bush groove (4c) and the shock absorber bush 12, In addition, the input means 30 including the vehicle speed sensor 31, the steering sensor 33, and the vibration sensor 35 to detect the driving state of the vehicle, and the fork 9 are bolts 13 and nuts. (14) when the pad is coupled to the shock absorber bush 12, it is padded to one side of the fork 9 to be integrally coupled with the shock absorber bush 12, as well as the vehicle body close to the bush groove 4c. It is installed to be fixed to the (41) side and the bush moving means 50 to operate the linear reciprocating movement of the shock absorber bush 12 along the bush groove (4c) by using the signal of the input means (30) It comprises a controller 60 for controlling the drive of the bush moving means (50).
여기서, 상기 진동센서(35)는 노면의 조건에 따라 주행중인 차체의 움직임 정도를 검출하게 된다.In this case, the vibration sensor 35 detects the degree of movement of the vehicle body being driven according to the condition of the road surface.
그리고, 상기 부시이동수단(50)은 상기 포크(9)의 측부에 중첩되어 볼트(13)와 너트(14)의 체결력을 통해 쇽업소버부시(12)와 일체로 결합되어지는 랙기어(51)와, 상기 랙기어(51)상에 치합되는 피니언기어(53)와, 상기 부시홈(4c)으로부터 근접한 차체(41)측에 고정되도록 설치되면서 상기 피니언기어(53)와는 모터축(55a)을 통해 결합되어져 상기 콘트롤러(60)의 제어신호에 따라 구동되어지는 모터(55)로 구성된다.And, the bush moving means 50 is overlapped with the side of the fork (9) rack gear 51 which is integrally coupled with the shock absorber bush 12 through the fastening force of the bolt 13 and the nut (14) And the pinion gear 53 meshed with the rack gear 51 and the pinion gear 53 with the pinion gear 53 while being fixed to the side of the vehicle body 41 close to the bush groove 4c. It is composed of a motor 55 is coupled through and driven according to the control signal of the controller 60.
이하, 본 발명에 따른 실시예의 작용과 효과에 대해서 설명하기로 한다.Hereinafter, the operation and effect of the embodiment according to the present invention will be described.
먼저, 차량이 주행을 시작하기 전이나 또는 노면이 평탄한 도로를 직진 주행할 경우에는 차속센서(31)와 조향센서(33) 및 진동센서(35)로부터 입력된 신호를 이용하여 콘트롤러(60)가 이의 상황을 판별하게 되며, 이때에는 상기 콘트롤러(60)가 모터(55)쪽으로 구동신호를 발생시키지 않게 된다.First, when the vehicle starts to travel or when driving straight along a road with a flat road surface, the controller 60 uses signals input from the vehicle speed sensor 31, the steering sensor 33, and the vibration sensor 35. This situation is determined, and in this case, the controller 60 does not generate a driving signal toward the motor 55.
이에 따라, 포크(9)와 결합된 쇽업소버부시(12)는 도 6(a)와 같이 대략 부시홈(4c)의 중간부위에서 그 위치가 고정되어지며, 이로 인해 코일스프링(11)은 중간 수준의 탄성값을 유지하면서 승차감을 향상시키는 데에 기여를 하게 된다.Accordingly, the shock absorber bush 12 coupled to the fork 9 has its position fixed at approximately the middle of the bush groove 4c as shown in FIG. 6 (a), whereby the coil spring 11 It contributes to improving the riding comfort while maintaining the level of elasticity.
그리고, 노면이 평탄하지 못한 도로를 직진 주행할 경우 콘트롤러(60)가 이의 상황을 판별하여 모터(55)쪽으로 구동신호를 발생시키게 되면, 상기 모터(55)의 구동력을 직접 전달받는 피니언기어(53)는 도 5에 도시된 상태에서 반시계방향으로 회전을 하게 되고, 이와 연동하는 랙기어(51)는 도시된 상태에서 우측으로 이동하게 된다.When the controller 60 determines the situation and generates a driving signal toward the motor 55 when driving straight on a road on which the road surface is not flat, the pinion gear 53 directly receiving the driving force of the motor 55. ) Rotates counterclockwise in the state shown in FIG. 5, and the rack gear 51 interlocked with the rack gear 51 moves to the right in the state shown.
이에 따라, 상기 랙기어(51)와 결합된 쇽업소버부시(12)는 도 6(b)와 같이 부시홈(4c)을 따라 우측으로 이동된 상태에서 그 위치가 고정되어지며, 상기 쇽업소버부시(12)와 포크(9)를 통해 연결된 쇽업소버(8)의 하단도 우측으로 이동된 상태를 유지하게 된다.Accordingly, the shock absorber bush 12 coupled with the rack gear 51 has its position fixed in the state moved to the right along the bush groove 4c as shown in FIG. The lower end of the shock absorber 8 connected through the 12 and the fork 9 is also maintained in the moved state to the right.
이와 같이, 상기 쇽업소버(8)의 하단이 우측으로 이동된 상태를 유지하게 되면, 상기 쇽업소버(8)에 감겨진 코일스프링(11)은 도 6(a)의 상태보다 더욱 소프트(soft)한 특성으로 변화되어지게 된다.As such, when the lower end of the shock absorber 8 is maintained in the right state, the coil spring 11 wound around the shock absorber 8 is softer than the state of FIG. 6 (a). It is changed to a characteristic.
따라서, 차량이 노면이 평탄하지 못한 도로를 직진 주행하는 경우에는 코일스프링(11)의 탄성값이 크게 증가되면서 승차감을 더욱 향상시키는 데에 기여를 하게 된다.Therefore, when the vehicle travels straight on the road where the road surface is not flat, the elastic value of the coil spring 11 is greatly increased, thereby contributing to further improving the riding comfort.
또한, 직진 주행중이던 차량이 선회 주행을 하게 되면 콘트롤러(60)가 이의 상황을 판별하여 모터(55)쪽으로 구동신호를 발생시키게 된다.In addition, when the vehicle driving in the straight direction turns the controller 60, the controller 60 determines the situation and generates a driving signal toward the motor 55.
이에 따라, 상기 모터(55)의 구동력을 직접 전달받는 피니언기어(53)는 도 5에 도시된 상태에서 시계방향으로 회전을 하게 되고, 이와 연동하는 랙기어(51)는 도시된 상태에서 좌측으로 이동하게 되며, 상기 랙기어(51)와 결합된 쇽업소버부시(12)는 도 6(c)와 같이 부시홈(4c)을 따라 좌측으로 이동된 상태에서 그 위치가 고정되어짐은 물론, 상기 쇽업소버부시(12)와 포크(9)를 통해 연결된 쇽업소버(8)의 하단도 좌측으로 이동된 상태를 유지하게 된다.Accordingly, the pinion gear 53 directly receiving the driving force of the motor 55 rotates clockwise in the state shown in FIG. 5, and the rack gear 51 interlocking with the pinion gear 53 moves to the left side in the illustrated state. The shock absorber bush 12 coupled to the rack gear 51 is fixed to the position in the state in which the shock absorber bush 12 is moved to the left along the bush groove 4c as shown in FIG. The lower end of the shock absorber 8 connected through the absorber bush 12 and the fork 9 also remains moved to the left.
이와 같이, 상기 쇽업소버(8)의 하단이 좌측으로 이동된 상태를 유지하게 되면, 상기 쇽업소버(8)에 감겨진 코일스프링(11)은 도 6(a)의 상태보다 더욱 하드(hard)한 특성으로 변화되어 진다.As such, when the lower end of the shock absorber 8 remains moved to the left side, the coil spring 11 wound on the shock absorber 8 is harder than the state of FIG. 6 (a). It is changed into a characteristic.
따라서, 차량이 선회 주행을 하는 경우에는 코일스프링(11)의 탄성값이 크게 감소되면서 하드(hard)한 특성을 갖게 되므로, 이때의 차량은 승차감보다는 주행안정성이 크게 향상되게 된다.Therefore, when the vehicle is turning, the elastic value of the coil spring 11 is greatly reduced and thus has a hard characteristic. In this case, the driving stability is significantly improved rather than the riding comfort.
한편, 본 발명에 따른 코일스프링(11)의 특성은 차량의 주행상태가 변함과 동시에 함께 변화되어짐으로써, 본 발명의 차량은 승차감과 조정안정성의 향상을 동시에 구현할 수 있는 장점이 있게 된다.On the other hand, the characteristics of the coil spring 11 according to the present invention is changed at the same time as the driving state of the vehicle changes, the vehicle of the present invention has the advantage that can be implemented at the same time to improve the riding comfort and adjustment stability.
또한, 상기와 같이 코일스프링(11)의 특성이 차량의 주행상태에 따라 가변되어지면, 선회중인 차량에 있어서는 조향핸들이 회전되는 방향의 좌우측으로 흔들리는 시미(shimmy)현상을 예방할 수 있게 되고, 또한 고속주행시 제동력이 발생될 때에는 조향핸들이나 대시패널에서 소음 또는 진동이 발생되는 저더(juder)현상도 예방할 수 있을 뿐만 아니라, 로드 노이즈(load noise)도 대폭 감소시킬 수 있는 잇점도 있게 된다.In addition, if the characteristics of the coil spring 11 is changed according to the driving state of the vehicle as described above, in the turning vehicle, it is possible to prevent the shimmy phenomenon to shake to the left and right of the direction in which the steering wheel is rotated. When the braking force is generated during high-speed driving, it is possible not only to prevent judder from generating noise or vibration from the steering wheel or the dash panel, but also to significantly reduce the load noise.
이상 설명한 바와 같이 본 발명에 의하면, 차량의 주행상태에 따라 코일스프링의 특성이 가변됨으로써, 승차감과 주행안정성의 향상을 동시에 구현할 수 있게 되고, 더불어 시미현상과 저더현상이 예방됨은 물론 로드 노이즈도 대폭 감소되는 효과가 있게 된다.As described above, according to the present invention, the characteristics of the coil spring vary according to the driving state of the vehicle, so that the riding comfort and driving stability can be improved at the same time. There is a reduction effect.
도 1과 도 2는 더블 위시본형 프런트서스펜션의 분리사시도 및 결합상태의 측면도,1 and 2 are a side view of the separated perspective and coupled state of the double wishbone front suspension,
도 3은 도 2의 상태를 개념적으로 도시한 개념도,3 is a conceptual diagram conceptually illustrating the state of FIG. 2;
도 4와 도 5는 본 발명에 따라 코일스프링 특성 가변장치를 포함하여 구성되는 프런트서스펜션의 평면도 및 측면도,4 and 5 are a plan view and a side view of a front suspension including a coil spring characteristic variable device according to the present invention;
도 6은 차량의 주행상태에 따라 코일스프링의 특성이 가변되는 상태를 보여주기 위한 개념도이다.6 is a conceptual diagram illustrating a state in which a characteristic of a coil spring is changed according to a driving state of a vehicle.
< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>
3 - 볼조인트 4 - 로어암3-Ball Joint 4-Lower Arm
4c - 부시홈 8 - 쇽업소버4c-Bush Groove 8-Shock Absorber
9 - 포크 12 - 쇽업소버부시9-Fork 12-Shock Absorber Bushing
30 - 입력수단 31 - 차속센서30-Input means 31-Vehicle speed sensor
33 - 조향센서 35 - 진동센서33-Steering Sensor 35-Vibration Sensor
41 - 차체 50 - 부시이동수단41-Body 50-Bushing Means
51 - 랙기어 53 - 피니언기어51-Rack Gear 53-Pinion Gear
55 - 모터 60 - 콘트롤러55-motor 60-controller
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040035487A KR20050110465A (en) | 2004-05-19 | 2004-05-19 | Coil spring characteristics variable system of front suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040035487A KR20050110465A (en) | 2004-05-19 | 2004-05-19 | Coil spring characteristics variable system of front suspension system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20050110465A true KR20050110465A (en) | 2005-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020040035487A KR20050110465A (en) | 2004-05-19 | 2004-05-19 | Coil spring characteristics variable system of front suspension system |
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| KR (1) | KR20050110465A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111731059A (en) * | 2020-06-04 | 2020-10-02 | 索密克汽车配件有限公司 | Automobile swing arm with reinforced buffering anti-collision structure |
-
2004
- 2004-05-19 KR KR1020040035487A patent/KR20050110465A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111731059A (en) * | 2020-06-04 | 2020-10-02 | 索密克汽车配件有限公司 | Automobile swing arm with reinforced buffering anti-collision structure |
| CN111731059B (en) * | 2020-06-04 | 2021-06-04 | 索密克汽车配件有限公司 | Automobile swing arm with reinforced buffering anti-collision structure |
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