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KR100726403B1 - Torsion beam type suspension - Google Patents

Torsion beam type suspension Download PDF

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Publication number
KR100726403B1
KR100726403B1 KR1020050064121A KR20050064121A KR100726403B1 KR 100726403 B1 KR100726403 B1 KR 100726403B1 KR 1020050064121 A KR1020050064121 A KR 1020050064121A KR 20050064121 A KR20050064121 A KR 20050064121A KR 100726403 B1 KR100726403 B1 KR 100726403B1
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South Korea
Prior art keywords
vehicle
strut
trailing arm
torsion beam
sensor
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Expired - Fee Related
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KR1020050064121A
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Korean (ko)
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KR20070009113A (en
Inventor
최민석
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현대모비스 주식회사
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Priority to KR1020050064121A priority Critical patent/KR100726403B1/en
Publication of KR20070009113A publication Critical patent/KR20070009113A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/04—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing not being pivotally mounted on the vehicle
    • 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
    • B60G17/016—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 their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • 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
    • 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
    • B60G2206/012—Hollow or tubular elements
    • 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
    • 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
    • B60G2400/80—Exterior conditions
    • B60G2400/82—Ground surface

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

Abstract

본 발명은 차량의 속도 또는 노면상태에 따라 차량의 지상고가 적절히 조절되도록 함으로써 도로면의 요철에 의한 차량 하단부의 손상을 방지할 수 있도록 된 토션빔 타입 현가장치에 관한 것이다.The present invention relates to a torsion beam-type suspension that is capable of preventing damage to the lower end of the vehicle due to unevenness of the road surface by allowing the ground height of the vehicle to be properly adjusted according to the speed or road condition of the vehicle.

쇽업소버, 스트러트, 구동축, 마운팅부시, 가이드슬롯, 트레일링암. Shock absorber, strut, drive shaft, mounting bush, guide slot, trailing arm.

Description

토션빔 타입 현가장치{Torsion beam type suspension}Torsion beam type suspension device

도 1은 종래 CTBA 타입 현가장치의 스트러트 장착구조를 보여주는 사시도.1 is a perspective view showing a strut mounting structure of a conventional CTBA type suspension device.

도 2는 본 발명에 따른 토션빔 타입 현가장치를 도시한 사시도.Figure 2 is a perspective view of a torsion beam type suspension according to the present invention.

도 3은 도 2의 요부 절개 사시도.FIG. 3 is a perspective view of the main portion of FIG. 2;

도 4는 본 발명에 따른 차량의 지상고 변화과정을 설명하기 위한 상태도.Figure 4 is a state diagram for explaining the ground level change process of the vehicle according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

110 : 트레일링암 112,113 : 가이드슬롯110: trailing arm 112,113: guide slot

120 : 스트러트 130 : 구동장치120: strut 130: drive device

132 : 모터 134 : 구동축132 motor 134 drive shaft

135 : 숫나사부 136 : 파이프부재135: male thread 136: pipe member

140 : 마운팅부시140: mounting bush

본 발명은 차량의 속도 또는 노면상태에 따라 차량의 지상고가 적절히 조절되도록 함으로써 도로면의 요철에 의한 차량 하단부의 손상을 방지할 수 있도록 된 토션빔 타입 현가장치에 관한 것이다.The present invention relates to a torsion beam-type suspension that is capable of preventing damage to the lower end of the vehicle due to unevenness of the road surface by allowing the ground height of the vehicle to be properly adjusted according to the speed or road condition of the vehicle.

주지된 바와 같이, CTBA(Coupled torsion beam axle) 현가장치는 차량 운전시 후측에 고정되어 타이어로 부터 들어오는 외부 충격력을 흡수하여 승차감과 안전성을 향상시키는 장치로서, 일반적으로 준중형 차량의 후방 현가장치에 적용되고 있다.As is well known, the CTBA (Coupled torsion beam axle) suspension is fixed to the rear side when driving the vehicle to absorb the external impact force from the tire to improve the ride comfort and safety, generally applied to the rear suspension of semi-medium vehicle It is becoming.

대한민국 등록특허공보 제0430940호의 종래기술편에는 상기와 같은 CTBA 현가장치에 대한 일예가 나타나 있는바, 도 1에 도시된 바와 같이 CTBA 현가장치(1)는 차의 뒷바퀴 사이에 장착되는 구조를 이루며, 몸체를 이루는 뒤차축(3)이 좌우 길이방향으로 형성된다. 상기 뒤차축(3)의 좌우 방향에는 스프링(5)이 각각 장착되며, 상기 스프링(5)과 인접한 상기 뒤차축(3)에는 스트러트(7)가 힌지결합되며, 일측에는 타이어(도시생략)와 결합되는 드럼(9) 장착을 위한 드럼장착부(11)가 상기 뒤차축(3)과 일체로 형성된다. 상기 드럼(9)은 작동신호에 의하여 내측에 브레이크가 작동되어, 상기 드럼(9)에 장착되는 타이어에 제동을 가하게된다.In the prior art of the Republic of Korea Patent Publication No. 0430940, an example for such a CTBA suspension device is shown, as shown in Figure 1 CTBA suspension device 1 forms a structure that is mounted between the rear wheel of the car, The rear axle 3 constituting the body is formed in the left and right longitudinal direction. Springs 5 are respectively mounted in the left and right directions of the rear axle 3, struts 7 are hinged to the rear axle 3 adjacent to the spring 5, and tires (not shown) are provided at one side thereof. A drum mounting portion 11 for mounting the drum 9 to be coupled is formed integrally with the rear axle 3. The drum 9 is braked inward by an operation signal, thereby applying a brake to the tire mounted on the drum 9.

상기 구성을 갖는 종래 CTBA 현가장치(1)의 동작을 도면을 참조하여 설명하 기로 한다. 차량을 운전하게 되면, 타이어와 결합되는 상기 드럼(9)에 외부의 힘이 가해지게 되며, 외력은 상기 드럼장착부(11)를 통하여 뒤차축(3)에 전달된다. 상기 뒤차축(3)에 전달된 외력은 상기 뒤차축(3) 자체의 비틀림과 상기 스프링(5)과 스트러트(7)에 의하여 충격이 흡수되어 차량의 안정성을 향상시키며, 보다 정숙한 승차감을 제공하게 된다.The operation of the conventional CTBA suspension device 1 having the above configuration will be described with reference to the drawings. When driving the vehicle, an external force is applied to the drum 9 coupled with the tire, and the external force is transmitted to the rear axle 3 through the drum mounting portion 11. External force transmitted to the rear axle (3) is absorbed by the torsion of the rear axle (3) itself and the spring (5) and the strut (7) to improve the stability of the vehicle, providing a quieter ride Done.

그러나, 상기와 같은 종래의 CTBA 현가장치는 차량의 지상고 조절기능이 없어 노면상태에 따라 적합한 주행이 불가능하여 차량의 안전주행에 장애가되는 문제 가 있었다.However, the conventional CTBA suspension device as described above does not have a ground level adjustment function of the vehicle, so that it is not possible to drive properly according to the road surface condition, which has a problem of impairing the safe driving of the vehicle.

이에, 본 발명은 상기한 문제점을 해결하기 위해 안출된 것으로, 본 발명의 목적은 센서를 통해 차량의 속도 또는 노면상태를 감지하고 이에 대응하여 스트러트를 전후방향으로 슬라이드시켜 적절한 차량의 지상고가 유지되도록 함으로써 노면상태에 따른 차량의 안전주행을 가능케하는 토션빔 타입 현가장치를 제공함에 있다.Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to detect the speed or road condition of the vehicle through the sensor and correspondingly slide the strut in the forward and backward direction to maintain the appropriate ground clearance of the vehicle Therefore, to provide a torsion beam type suspension device that enables the safe driving of the vehicle according to the road condition.

상기한 목적을 달성하기 위한 본 발명에 따른 토션빔 타입 현가장치는 트레일링암; 상단은 차체측에 고정되고 하단은 상기 트레일링암측에 슬라이드 가능하게 결합되는 스트러트; 상기 스트러트를 슬라이시키는 구동장치; 상기 구동장치를 제어하는 제어부; 차량의 속도 또는 노면상태를 감지하여 상기 제어부에 출력하는 센서를 포함하여 구성된 것을 특징으로 한다.A torsion beam type suspension device according to the present invention for achieving the above object is a trailing arm; An upper end fixed to the vehicle body side and a lower end slidably coupled to the trailing arm side; A driving device for slicing the strut; A control unit controlling the driving device; And a sensor configured to detect a speed or a road surface state of the vehicle and output the same to the controller.

상기 트레일링암에는 가이드슬롯이 형성되고, 상기 스트러트를 상기 가이드슬롯을 따라 슬라이드되도록 형성된다.A guide slot is formed on the trailing arm, and the strut is formed to slide along the guide slot.

상기 구동장치는 상기 제어부에 의해 구동되는 모터와, 상기 모터에 구동에 따라 회전되는 구동축과 상기 스트러트와 결합되어 상기 구동축과 맞물려 직선이동하는 파이프부재를 포함한다.The driving device includes a motor driven by the controller, a drive shaft rotated by the motor, and a pipe member coupled to the strut and linearly engaged with the drive shaft.

본 발명은 상기 가이드슬롯을 따라 슬라이드되도록 상기 스트러트에 결합되는 마운팅부시를 더 포함하고, 상기 마운팅부시는 상기 파이프부재와 결합하여 형 성한다.The present invention further includes a mounting bushing coupled to the strut to slide along the guide slot, wherein the mounting bushing is coupled to the pipe member.

이하, 본 발명의 바람직한 일실시예를 첨부도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

참고로, 이하에서 설명될 본 발명의 구성들 중 종래와 동일한 구성에 대해서는 전술된 종래기술을 참조하기로 하고 별도의 상세한 설명은 하지 않기로 한다.For reference, with respect to the same configuration as the prior art of the configuration of the present invention to be described below will be referred to the above-described prior art and will not be described in detail.

도 2는 본 발명의 일실시예에 따른 토션빔 타입 현가장치를 도시한 사시도이고, 도 3은 도 2의 요부를 절개하여 나타낸 것으로서, 특히, 스트러트를 슬라이드시키는 구동장치의 구체적인 구성을 보여주는 사시도이다.FIG. 2 is a perspective view illustrating a torsion beam type suspension device according to an embodiment of the present invention, and FIG. 3 is a cutaway view of the main part of FIG. 2, and in particular, a perspective view showing a specific configuration of a driving device for sliding a strut. .

도 2 및 도 3에 도시한 바와 같이, 본 발명에 따른 토션빔 타입 현가장치는 차량의 뒤차축에 배치되는 트레일링암(110)과, 상기 트레일링암(110)과 차체(미도시) 사이에 지지되는 스트러트(120)와, 상기 스트러트(120)의 하단부를 차량의 전후방향으로 슬라이드시키는 구동장치(130)와, 상기 구동장치(130)를 제어하는 제어부(미도시)와, 차량의 속도 또는 노면상태를 감지하여 상기 제어부로 출력하는 센서(미도시)를 포함한다.2 and 3, the torsion beam type suspension according to the present invention is supported between the trailing arm 110 and the trailing arm 110 and the body (not shown) disposed on the rear axle of the vehicle. The strut 120, a driving device 130 for sliding the lower end of the strut 120 in the front-rear direction of the vehicle, a controller (not shown) for controlling the driving device 130, and a speed or road surface of the vehicle. And a sensor (not shown) for detecting a state and outputting the detected state to the controller.

스트러트(120)의 상단부는 차체(미도시)측에 고정되고, 그 하단부는 트레일링암(110) 내부에 위치한 마운팅부시(140)와 결합되어 상기 트레일링암(110)의 전후방향으로 슬라이드 직선이동 가능하게 결합된다.The upper end of the strut 120 is fixed to the vehicle body (not shown) side, the lower end is coupled to the mounting bush 140 located inside the trailing arm 110, the slide can be linearly moved in the front and rear direction of the trailing arm (110) To be combined.

즉, 트레일링암(110)의 외주면상에는 차량의 전후방향(A)으로 길게 천공된 다수의 가이드슬롯(112)(113)이 형성되는데, 상부에 위치한 가이드슬롯(112)를 통해 스트러트(120)의 하단부가 슬라이드되고, 좌우측에 위치한 가이드슬롯(113)을 통해 상기 스트러트(120)에 볼트 체결된 마운팅부시(140)가 슬라이드되도록 형성되어 있다. That is, on the outer circumferential surface of the trailing arm 110 is formed a plurality of guide slots 112, 113 perforated long in the front and rear direction (A) of the vehicle, through the guide slot 112 located at the top of the strut 120 The lower end is slid, and the mounting bush 140 bolted to the strut 120 is formed to slide through guide slots 113 positioned on the left and right sides.

한편, 구동장치(130)는 트레일링암(110) 내부에 배치되는 모터(132)와, 일정길이를 가지며 상기 모터(132)의 회전축(미도시)과 결합되어 회전되는 구동축(134)과, 상기 구동축(134)의 외주부에 맞물려 상기 구동축(134)을 따라 직선이동하는 파이프부재(136)로 구성된다.On the other hand, the drive device 130 is a motor 132 disposed inside the trailing arm 110, a drive shaft 134 is rotated in combination with a rotation shaft (not shown) of the motor 132, and the It is composed of a pipe member 136 is engaged with the outer peripheral portion of the drive shaft 134 to move linearly along the drive shaft 134.

상기 모터(132)는 정/역회전이 가능한 모터로서 트레일링암(110) 내부에 유동되지 않도록 고정되며, 통상 제어부(ECU)로부터 입력되는 신호에 따라 정/역방향으로 회전 구동된다.The motor 132 is a motor capable of forward / reverse rotation, and is fixed so as not to flow in the trailing arm 110, and is generally driven in a forward / reverse direction according to a signal input from the control unit ECU.

상기 모터(132)의 회전축과 결합되는 구동축(134)은 외주면상에 숫나사부(135)가 형성되어 상기 회전축과 동시에 회전되도록 되어 있다.The driving shaft 134 coupled to the rotation shaft of the motor 132 has a male screw 135 formed on an outer circumferential surface thereof so as to rotate simultaneously with the rotation shaft.

상기 파이프부재(136)는 내주면에 상기 구동축(134)의 숫나사부(135)와 맞물리는 암나사부(미도시)가 형성되어 있으며, 도 3에서 보는 것과 같이 마운팅부시(140)의 내측에 유동되지 않도록 고정되어 있다.The pipe member 136 is formed on the inner circumferential surface is a female thread portion (not shown) that is engaged with the male screw portion 135 of the drive shaft 134, as shown in Figure 3 does not flow inside the mounting bush 140 Is fixed.

이에 따라, 모터(132)에 의한 구동축(134)의 회전시 파이프부재(136)는 스트러트(120)에 결합된 마운팅부시(140)와 함께 구동축(134)을 따라 트레일링암(110) 전후방향으로 슬라이드 직선이동되는 것이다.Accordingly, when the drive shaft 134 is rotated by the motor 132, the pipe member 136, along with the mounting bush 140 coupled to the strut 120, along the drive shaft 134 in the front and rear directions of the trailing arm 110. The slide is moved linearly.

한편, 센서는 차량의 속도를 감지할 있는 속도센서 및 차량과 노면과의 거리를 감지할 수 있는 거리센서를 포함하며, 상기 센서를 통해 감지된 전기적 신호는 제어부로 전송된다.On the other hand, the sensor includes a speed sensor for sensing the speed of the vehicle and a distance sensor for sensing the distance between the vehicle and the road surface, the electrical signal detected through the sensor is transmitted to the controller.

상기한 구성에 따른 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention according to the above configuration is as follows.

차량의 주행중 센서를 통해 감지된 차량의 속도 및 노면과의 거리에 대한 정보는 제어부로 출력되고, 상기 제어부는 상기 감지된 정보에 따라 모터(132)를 구동하여 회전시키게 된다. Information about the speed of the vehicle and the distance to the road surface detected by the sensor while driving the vehicle is output to the controller, and the controller drives and rotates the motor 132 according to the detected information.

상기 모터(132)의 회전에 따라 구동축(134)이 같이 회전되면 상기 구동축(134)과 맞물린 파이프부재(136)가 상기 구동축(134)을 따라 직선이동하기 때문에 스트러트(120)의 하단부는 트레일링암(110) 전후방향으로 슬라이드되어 트레일링암(110)을 상하방향으로 일정거리만큼 이동시키기 때문에 차량의 노면으로부터의 지상고를 자동 조절할 수 있게 되는 것이다.When the driving shaft 134 is rotated together with the rotation of the motor 132, the lower end of the strut 120 is a trailing arm because the pipe member 136 engaged with the driving shaft 134 moves linearly along the driving shaft 134. (110) Since the front and rear slides the trailing arm 110 by a predetermined distance in the vertical direction, it is possible to automatically adjust the ground clearance from the road surface of the vehicle.

즉, 스트러트(120)의 이동에 따라 상기 스트러트(120)의 길이방향으로의 감쇠력이 발생되고, 상기 감쇠력의 영향에 의해 동적인 상태에서 차량의 지상고가 변하게 되는 것이다.That is, the damping force in the longitudinal direction of the strut 120 is generated as the strut 120 moves, and the ground clearance of the vehicle is changed in the dynamic state by the influence of the damping force.

도 4는 본 발명의 사용 상태도로서, 스트러트(120)의 슬라이드 동작에 따른 차량의 지상고 변화를 차량의 측면에서 바라본 모습을 도식적으로 보여주고 있다.4 is a diagram illustrating a state of use of the present invention, which schematically shows a view of the ground elevation of the vehicle according to the slide operation of the strut 120 from the side of the vehicle.

도시된 바와 같이, 차량이 평탄한 노면을 주행할 경우에는 센서를 통해 감지된 고속고주파신호에 따라 구동장치를 통해 스트러트(120)를 후방으로 이동시켜 지상고를 낮추기 때문에 차체를 도로면에 밀착 안정된 상태로 주행 가능하게 할 수 있고, 험로 주행시에는 센서에 의해 감지된 저속저주파신호에 따라 스트러트(120)를 전방으로 이동시켜 지상고를 높이기 때문에 도로면의 요철에 의한 차량 하단부의 손상을 방지할 수 있는 것이다.As shown in the figure, when the vehicle travels on a flat road surface, the vehicle body is brought into close and stable contact with the road surface because the ground is lowered by moving the strut 120 backward through the driving device according to the high frequency signal detected by the sensor. The driving can be enabled, and when driving in a rough road, the strut 120 is moved forward according to the low speed low frequency signal detected by the sensor to increase the ground height, thereby preventing damage to the lower end of the vehicle due to unevenness of the road surface.

또한, 스트러트(120)의 이동에 따라 트레일링암(110)에 작용하는 스트러트(120)의 작용점이 달라지게되어 유효감쇠력을 조절할 수 있다. 즉, 스트러트(120)가 트레일링암(110) 후방으로 이동하는 경우 레버비(lever ratio)의 증가로 인하여 차체에 작용하는 유효감쇠력이 증가하는 것이다.In addition, according to the movement of the strut 120, the working point of the strut 120 acting on the trailing arm 110 is changed to adjust the effective damping force. That is, when the strut 120 moves to the rear of the trailing arm 110, the effective damping force acting on the vehicle body increases due to an increase in the lever ratio.

상술한 바와 같이, 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당 기술 분야의 숙련된 당업자는 하기의 특허청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below And can be changed.

상기한 구성의 본 발명에 의하면, 스트러트가 트레일링암에 대하여 슬라이딩하는 구조를 채택하고 있기 때문에 지상고 조절 또는 감쇠력 조절이 가능하게 되는 효과가 있다.According to the present invention having the above-described configuration, since the strut adopts a structure that slides with respect to the trailing arm, there is an effect that the ground clearance adjustment or the damping force adjustment is enabled.

또한, 트레일링암에 스트러트의 이동을 가이드할 수 있는 가이드슬롯을 형성함에 따라, 스트러트가 상기 가이드슬롯을 따라 안정적으로 슬라이드 이동될 수 있도록 할 수 있는 장점이 있다.In addition, by forming a guide slot for guiding the movement of the strut in the trailing arm, there is an advantage that the strut can be slidably moved along the guide slot.

또한, 구동장치를 모터와 구동축 및 상기 구동축에 맞물려 상대 이동하는 파이프부재로 구성함으로써, 상기한 간단한 기구적 구성을 통해 차량의 지상고를 용이하게 조절할 수 있고, 차량의 중량이 크게 증가되지 않아도 되는 잇점이 있다.In addition, by configuring the drive device to the motor, the drive shaft and the pipe member to move relative to the drive shaft, the above-described simple mechanical configuration can easily adjust the ground height of the vehicle, the advantage that the weight of the vehicle does not need to be significantly increased There is this.

또한, 스트러트 하단에 파이프부재가 결합된 마운팅부시를 결합하여 구성함으로써, 스트러트의 슬라이드 이동과 함께 상기 마운팅부시를 통한 완충작용이 동 시에 이루어지도록 할 수 있는 장점이 있다.In addition, by combining the mounting bushing pipe member is coupled to the bottom of the strut, there is an advantage that the buffering action through the mounting bush with the slide movement of the strut can be made at the same time.

또한, 마운팅부시, 모터, 구동축, 파이프부재 등을 모두 트레일링암 내부에 배치되도록 하였기 때문에 트레일링암 주변부 구조가 복잡해지지 않다는 장점도 함께 얻을 수 있는 것이다.In addition, since the mounting bushing, the motor, the drive shaft, the pipe member and the like are all disposed inside the trailing arm, the trailing arm peripheral structure is not complicated.

Claims (4)

트레일링암;Trailing arms; 상단은 차체측에 고정되고 하단은 상기 트레일링암측에 슬라이드 가능하게 결합되는 스트러트;An upper end fixed to the vehicle body side and a lower end slidably coupled to the trailing arm side; 상기 스트러트를 슬라이드시키는 구동장치;A driving device for sliding the strut; 상기 구동장치를 제어하는 제어부;A control unit controlling the driving device; 차량의 속도 또는 노면상태를 감지하여 상기 제어부에 출력하는 센서를 포함하여 구성되되,It is configured to include a sensor for detecting the speed or road condition of the vehicle and outputs to the control unit, 상기 구동장치는,The drive device, 상기 제어부에 의해 구동되는 모터;A motor driven by the controller; 상기 모터에 구동에 따라 회전되며 외주면상에 숫나사부가 형성된 구동축; 및A drive shaft rotated in accordance with the drive of the motor and having a male thread formed on an outer circumferential surface thereof; And 내주면에 상기 숫나사부와 맞물리는 암나사부가 형성되며, 상기 스트러트와 결합되어 상기 구동축과 맞물려 직선이동하는 파이프부재를 포함하여 이루어지고,A female screw portion is formed on an inner circumferential surface and meshes with the male screw portion, and includes a pipe member coupled to the strut to engage with the drive shaft and linearly move. 상기 센서는 상기 차량의 속도를 감지할 수 있는 속도센서와, 상기 차량과 노면과의 거리를 감지할 수 있는 거리센서를 포함하여 이루어진 것을 특징으로 하는 토션빔 타입 현가장치.The sensor comprises a speed sensor for detecting the speed of the vehicle, and a distance sensor for detecting the distance between the vehicle and the road surface. 제1항에 있어서, 상기 트레일링암에는 가이드슬롯이 형성되고, 상기 스트러트는 상기 가이드슬롯을 따라 슬라이드되도록 형성한 것을 특징으로 하는 토션빔 타입 현가장치.The torsion beam type suspension apparatus according to claim 1, wherein a guide slot is formed in the trailing arm, and the strut is formed to slide along the guide slot. 삭제delete 제2항에 있어서, 상기 가이드슬롯을 따라 슬라이드되도록 상기 스트러트에 결합되는 마운팅부시를 더 포함하고, 상기 마운팅부시는 상기 파이프부재와 결합하여 형성한 것을 특징으로 하는 토션빔 타입 현가장치.The torsion beam type suspension device according to claim 2, further comprising a mounting bushing coupled to the strut so as to slide along the guide slot, wherein the mounting bushing is formed in combination with the pipe member.
KR1020050064121A 2005-07-15 2005-07-15 Torsion beam type suspension Expired - Fee Related KR100726403B1 (en)

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