KR20040046707A - active anti-squat apparatus of a vehicle - Google Patents

active anti-squat apparatus of a vehicle Download PDF

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Publication number
KR20040046707A
KR20040046707A KR1020020074707A KR20020074707A KR20040046707A KR 20040046707 A KR20040046707 A KR 20040046707A KR 1020020074707 A KR1020020074707 A KR 1020020074707A KR 20020074707 A KR20020074707 A KR 20020074707A KR 20040046707 A KR20040046707 A KR 20040046707A
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KR
South Korea
Prior art keywords
vehicle
squat
trailing arm
active anti
carrier
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KR1020020074707A
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Korean (ko)
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KR100482142B1 (en
Inventor
허진혁
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현대자동차주식회사
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Priority to KR10-2002-0074707A priority Critical patent/KR100482142B1/en
Publication of KR20040046707A publication Critical patent/KR20040046707A/en
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Publication of KR100482142B1 publication Critical patent/KR100482142B1/en

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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • B60G2800/16—Running
    • B60G2800/164—Heaving; Squatting

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

Abstract

PURPOSE: An active anti-squat device of a vehicle is provided to improve riding comfort of the vehicle and improve competitiveness by preventing squat efficiently by making suspension geometry actively changed into a state optimally preventing squat according to the current conditions of the vehicle before squat of the vehicle occurs. CONSTITUTION: An active anti-squat device of a vehicle comprises a trailing arm(3) rotatably connected to a carrier(1) of a rear wheel; an arc-shaped slot(9) formed to a vehicle body to make a mounting part of the vehicle body side of the trailing arm rotate with a part connected with the carrier with a rotating shaft; a rotating unit rotating the trailing arm; plural length sensors(11) sensing changes in length of front and rear struts of the vehicle; and a controller(13) receiving signals of the length sensors and controlling the rotating unit.

Description

차량의 능동형 안티스쿼트 장치{active anti-squat apparatus of a vehicle}Active anti-squat apparatus of a vehicle

본 발명은 차량의 스쿼트(squat)현상을 능동적으로 방지할 수 있도록 하는 장치에 관한 것으로서, 보다 상세하게는 스쿼트의 발생 이전에 차량의 서스펜션 지오메트리를 스쿼트가 방지되도록 하는 상태로 만드는 기술에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for actively preventing squat phenomenon of a vehicle, and more particularly, to a technique for bringing a suspension geometry of a vehicle into a state where squat is prevented before the squat is generated.

차량의 스쿼트는 차량의 발진 또는 가속시에 차체의 뒷부분이 내려앉는 현상을 말하는바, 상기와 같은 스쿼트는 승차감을 저하시켜 차량의 전체적인 상품성 저하를 초래하게 되므로, 종래부터 상기와 같은 차량의 스쿼트를 최소화하려는 여러 방안이 모색되고 있다.The squat of the vehicle refers to a phenomenon in which the rear part of the vehicle falls down when the vehicle is started or accelerated. The squat as described above reduces the ride comfort and causes the overall merchandise deterioration of the vehicle. There are several ways to minimize it.

그 중에는 상기와 같은 스쿼트의 발생의 G-센서 등을 이용하여 감지하고 이에 따라 현가장치의 댐퍼 감쇠계수를 조정함으로써 스쿼트를 최소화 하도록 하는 방법 등이 있다.Among them, there is a method for minimizing the squat by detecting using the G-sensor of the generation of the squat as described above and adjusting the damper damping coefficient of the suspension accordingly.

그러나, 상기한 바와 같은 방법은 이미 스쿼트가 발생한 후에 이를 감지하여 후속적으로 조치를 취하게 되기 때문에 스쿼트에 대한 효율적이 대책이 되지는 못하는 문제점이 있다.However, there is a problem that the method as described above is not effective measures for the squat because it is detected after the squat has already occurred to take action.

이에 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 차량의 스쿼트가 발생하기 이전에 차량의 서스펜션 지오메트리 자체가 현재의 차량 상태에 따라 스쿼트를 방지할 수 있는 최적의 상태로 능동적으로 변화할 수 있도록 함으로써, 스쿼트를 효율적을 방지하여 차량의 실질적인 승차감 개선을 통한 상품성 향상을 이룰 수 있도록 한 차량의 능동형 안티스쿼트 장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, the suspension geometry of the vehicle is actively changed to the optimal state to prevent the squat according to the current vehicle state before the squat of the vehicle occurs It is an object of the present invention to provide an active anti-squat device of a vehicle that prevents squats to be efficiently, thereby improving the merchandise through substantial improvement of the riding comfort of the vehicle.

도 1은 본 발명에 따른 차량의 능동형 안티스쿼트 장치의 구성을 도시한 도면,1 is a view showing the configuration of an active anti-squat device of a vehicle according to the present invention,

도 2는 본 발명의 이론적 배경을 설명하기 위한 도면,2 is a view for explaining a theoretical background of the present invention,

도 3는 본 발명의 가정을 설명하기 위한 도면이다.3 is a view for explaining the assumption of the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 캐리어3; 트레일링암One; Carrier 3; Trailing arm

5; 차체7; 부시5; Body 7; bush

9; 호형슬롯11; 길이센서9; Arc slot 11; Length sensor

13; 컨트롤러15; 모터13; Controller 15; motor

17; 회동암19; 직선슬롯17; Hoist Rock 19; Straight slot

C; 무게중심C; Center of gravity

상기한 바와 같은 목적을 달성하기 위한 본 발명 차량의 능동형 안티스쿼트 장치는 후륜의 캐리어에 차량의 상하방향으로 회동 가능하게 연결된 트레일링암과;An active anti-squat device of a vehicle according to the present invention for achieving the above object includes a trailing arm rotatably connected to the carrier of the rear wheel in the vertical direction of the vehicle;

상기 트레일링암의 차체측 마운팅부위가 상기 캐리어와의 연결부위를 회동축으로 회동될 수 있도록 차체에 형성된 호형슬롯과;An arc-shaped slot formed in the vehicle body such that the vehicle-side mounting portion of the trailing arm can rotate the connection portion with the carrier with the pivot shaft;

상기 트레일링암을 회동시키는 회동수단과;Rotating means for rotating the trailing arm;

차량 전후의 스트럿의 길이변화를 감지하는 다수의 길이센서와;A plurality of length sensors for detecting a length change of the struts before and after the vehicle;

상기 길이센서들의 신호를 받아 상기 회동수단을 제어하는 컨트롤러로 구성된 것을 특징으로 한다.Characterized in that it comprises a controller for controlling the rotation means in response to the signal of the length sensors.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 차량의 능동형 안티스쿼트 장치의 구성을 도시한 것으로서, 그 주요한 구성은 상기한 바와 같이 후륜의 캐리어(1)에 연결되어 있는 트레일링암(3)을 차체(5)에 대하여 회동시켜가면서 트레일링암(3)의 차체(5)에 대한 마운팅 지점을 가변시킬 수 있도록 하는 메커니즘이다.1 shows a configuration of an active anti-squat device of a vehicle according to the present invention, the main configuration of which comprises a trailing arm 3 connected to a carrier 1 of a rear wheel as described above with respect to the vehicle body 5. It is a mechanism for varying the mounting point for the vehicle body 5 of the trailing arm 3 while rotating.

즉, 트레일링암(3)이 후륜의 캐리어(1)에 차량의 상하방향으로 회동 가능하게 부시(7)를 통하여 연결되어 있고, 상기 트레일링암(3)의 차체측 마운팅 지점이 상기 캐리어(1)와의 연결부위를 회동축으로 회동될 수 있도록 차체(5)에는 호형슬롯(9)이 구비되어 있으며, 상기 트레일링암(3)에는 그 차체측 마운팅 지점을 상기 호형슬롯(9) 내에서 회동시키는 회동수단이 연결되어 있어서, 차량 전후의 스트럿의 길이변화를 감지하는 다수의 길이센서(11)와, 상기 길이센서(11)들의 신호를 받아 상기 회동수단을 제어하는 컨트롤러(13)에 의해 상기 트레일링암(3)이 회동할 수 있도록 구성된 것이다.That is, the trailing arm 3 is connected to the carrier 1 of the rear wheel through the bush 7 so as to be rotatable in the vertical direction of the vehicle, and the mounting body side mounting point of the trailing arm 3 is the carrier 1. The vehicle body 5 is provided with an arc-shaped slot 9 so that the joint portion of the car body can be rotated with the pivot shaft. The trailing arm 3 is pivoted to rotate the vehicle-side mounting point in the arc-shaped slot 9. Means are connected, the trailing arm by a plurality of length sensors 11 for detecting the length change of the struts before and after the vehicle, and a controller 13 for receiving the signals of the length sensors 11 to control the rotation means (3) is configured to rotate.

상기 회동수단은 본 실시예에서 차체(5)에 고정된 모터(15)와, 상기 모터(15)에 의해 회동되는 회동암(17)과, 상기 회동암(17)이 끼워져서 회동 운동력을 전달할 수 있도록 상기 트레일링암(3)에 형성된 직선슬롯(19)으로 구성하였다.The rotation means is a motor 15 fixed to the vehicle body 5 in this embodiment, the rotation arm 17 is rotated by the motor 15, and the rotation arm 17 is fitted to transmit the rotational kinetic force It consists of a straight slot 19 formed in the trailing arm (3) to be able to.

상기와 같은 구성의 능동형 안티스쿼트 장치는 다음과 같은 이론적 배경에 근거한 것이다.The active anti squat device having the above configuration is based on the following theoretical background.

즉, 도 1에는 후륜에 트레일링암(3)을 구비하고 있는 차량의 안티스쿼트 조건을 설명하기 위한 차량의 무게중심(C)과 트레일링암(3)의 차체 마운팅 지점과의 관계가 도시되어 있는데, 외국기술서적(서명;“Fundamentals of Vehicle Dynamics”, 저자; Thomas D. Gillespie, 출판사; SAE)의 248~254쪽에 기재된 내용에 따르면, 상기 도 1에 도시된 바와 같은 상태에서 (e/d)=(h/L)의 관계가 성립하면 이론적으로 100% 안티스쿼트(anti-squat) 상태가 구현된다.That is, FIG. 1 shows the relationship between the center of gravity (C) of the vehicle and the body mounting point of the trailing arm (3) for explaining the anti-squat condition of the vehicle having the trailing arm (3) on the rear wheel. According to the contents described on pages 248 to 254 of a foreign technical book (signature; “Fundamentals of Vehicle Dynamics”, author; Thomas D. Gillespie, publisher; SAE), in the state as shown in FIG. 1, (e / d) = If the relationship of (h / L) holds, theoretically 100% anti-squat state is realized.

본 발명은 상기한 바와 같은 이론을 기초로 하고, 또 도 3에 표현된 바와 같은 가정에 근거하는바, 이 가정은 차량의 무게중심(C)의 위치가 탑승인원 및 적재량의 변화에 따라서 도시된 바와 같이 수평이동만을 한다고 가정하는 것이다.The present invention is based on the theory as described above, and based on the assumptions expressed in FIG. 3, wherein the position of the center of gravity C of the vehicle is shown according to the change in occupancy and loading capacity. It is assumed that only horizontal movement is performed.

왜냐하면, 하중의 변화에 따른 무게중심(C)의 높이 변화는 무게중심의 수평방향 변화에 비하여 매우 작다고 가정할 수 있기 때문이다.This is because the height change of the center of gravity C according to the load change can be assumed to be very small compared to the horizontal change of the center of gravity.

따라서, 상기한 바와 같은 안티스쿼트 장치에서, 상기 컨트롤러(13)가 차량의 전후에 설치된 스트럿의 길이변화를 상기 길이센서(11)로 감지하여 그 길이변화에 따른 차량 무게중심(C)의 수평방향 변화를 계산해 내고, 그에 따라 이론적으로 100%의 안티스쿼트 상태를 구현하는 상기 수식을 만족하도록 상기 트레일링암(3)의 차체 마운팅 지점을 연산하게 되는데, 도식적으로는 무게중심으로부터 후륜의 접지점까지의 직선 내에 상기 트레일링암의 차체 마운팅 지점이 선정되면 된다.Therefore, in the anti-squat device as described above, the controller 13 detects the length change of the struts installed before and after the vehicle with the length sensor 11 and the horizontal direction of the vehicle center of gravity C according to the length change. The change is calculated and accordingly the body mounting point of the trailing arm 3 is calculated to satisfy the above equation, which theoretically embodies an anti-squat state of 100%, which is a straight line from the center of gravity to the ground point of the rear wheel. The body mounting point of the trailing arm may be selected within.

컨트롤러(13)는 상기 연산된 결과에 따라서, 상기 모터(15)를 구동하여 상기 회동암(17)이 상기 트레일링암(3)의 차체 마운팅 지점이 상기 차체(5)의 호형슬롯(9)에서 회동하도록 함으로써, 이론적인 100% 안티스쿼트 상태의 서스펜션 지오메트리를 구현하게 된다.The controller 13 drives the motor 15 according to the calculated result so that the pivot arm 17 has the vehicle body mounting point of the trailing arm 3 at the arc slot 9 of the vehicle body 5. By rotating, we achieve the suspension geometry in the theoretical 100% anti-squat state.

상기와 같은 100% 안티스쿼트 상태는 차량이 발진 또는 가속하기 이전에 이미 차량의 무게중심(C) 변화에 따라서 최적의 상태로 서스펜션 지오메트리가 구현되어 있음을 의미하므로, 차량이 발진 또는 가속하는 것에 선행하여 스쿼트의 발생을 효과적으로 방지하게 된다.The 100% anti-squat state as described above means that the suspension geometry is implemented in an optimal state according to the change of the center of gravity (C) of the vehicle before the vehicle starts or accelerates. This effectively prevents the generation of squats.

이상과 같이 본 발명에 의하면, 차량의 스쿼트가 발생하기 이전에 차량의 서스펜션 지오메트리 자체가 현재의 차량 상태에 따라 스쿼트를 방지할 수 있는 최적의 상태로 능동적으로 변화할 수 있도록 함으로써, 스쿼트를 효율적으로 방지하여 차량의 실질적인 승차감 개선을 통한 상품성 향상을 가져온다.As described above, according to the present invention, before the squat of the vehicle occurs, the suspension geometry of the vehicle can be actively changed to an optimal state that can prevent the squat according to the current vehicle state, thereby efficiently squatting. Prevents the improvement of the merchandise through the actual ride comfort of the vehicle.

Claims (3)

후륜의 캐리어에 차량의 상하방향으로 회동 가능하게 연결된 트레일링암과;A trailing arm rotatably connected to the carrier of the rear wheel in a vertical direction of the vehicle; 상기 트레일링암의 차체측 마운팅부위가 상기 캐리어와의 연결부위를 회동축으로 회동될 수 있도록 차체에 형성된 호형슬롯과;An arc-shaped slot formed in the vehicle body such that the vehicle-side mounting portion of the trailing arm can rotate the connection portion with the carrier with the pivot shaft; 상기 트레일링암을 회동시키는 회동수단과;Rotating means for rotating the trailing arm; 차량 전후의 스트럿의 길이변화를 감지하는 다수의 길이센서와;A plurality of length sensors for detecting a length change of the struts before and after the vehicle; 상기 길이센서들의 신호를 받아 상기 회동수단을 제어하는 컨트롤러;A controller which receives the signals of the length sensors and controls the rotation means; 로 구성된 것을 특징으로 하는 차량의 능동형 안티스쿼트 장치.Active anti-squat device of a vehicle, characterized in that consisting of. 제1항에 있어서, 상기 회동수단은The method of claim 1, wherein the rotation means 차체에 고정된 모터와;A motor fixed to the vehicle body; 상기 모터에 의해 회동되는 회동암과;A rotating arm rotated by the motor; 상기 회동암이 끼워져서 회동운동력을 전달할 수 있도록 상기 트레일링암에 형성된 직선슬롯;A linear slot formed in the trailing arm to insert the pivotal arm so as to transmit the pivoting force; 으로 구성된 것을 특징으로 하는 차량의 능동형 안티스쿼트 장치.Active anti-squat device of a vehicle, characterized in that consisting of. 제1항에 있어서, 상기 트레일링암은The method of claim 1, wherein the trailing arm 상기 후륜의 캐리어에 부시를 통해 연결된 것을 특징으로 하는 차량의 능동형 안티스쿼트 장치.Active anti squat device of a vehicle, characterized in that connected to the carrier of the rear wheel through a bush.
KR10-2002-0074707A 2002-11-28 2002-11-28 active anti-squat apparatus of a vehicle KR100482142B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100726403B1 (en) * 2005-07-15 2007-06-08 현대모비스 주식회사 Torsion beam type suspension
KR20200109710A (en) * 2019-03-14 2020-09-23 현대자동차주식회사 Device for preventing buckling of trailing arm

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07149130A (en) * 1993-11-29 1995-06-13 Toyota Motor Corp Electric motor type suspension
KR19980045345A (en) * 1996-12-10 1998-09-15 김영귀 Suspension of automobile
JPH11151921A (en) * 1997-11-19 1999-06-08 Nissan Motor Co Ltd Suspension device for vehicle
JP2001105820A (en) * 1999-10-08 2001-04-17 Mazda Motor Corp Vehicular suspension arrangement structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100726403B1 (en) * 2005-07-15 2007-06-08 현대모비스 주식회사 Torsion beam type suspension
KR20200109710A (en) * 2019-03-14 2020-09-23 현대자동차주식회사 Device for preventing buckling of trailing arm

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