KR100293781B1 - Bush for subframe of vehicle - Google Patents

Bush for subframe of vehicle Download PDF

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Publication number
KR100293781B1
KR100293781B1 KR1019960073311A KR19960073311A KR100293781B1 KR 100293781 B1 KR100293781 B1 KR 100293781B1 KR 1019960073311 A KR1019960073311 A KR 1019960073311A KR 19960073311 A KR19960073311 A KR 19960073311A KR 100293781 B1 KR100293781 B1 KR 100293781B1
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KR
South Korea
Prior art keywords
subframe
bush
side member
vehicle
rubber
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KR1019960073311A
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Korean (ko)
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KR19980054177A (en
Inventor
전동기
Original Assignee
이계안
현대자동차주식회사
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Priority to KR1019960073311A priority Critical patent/KR100293781B1/en
Publication of KR19980054177A publication Critical patent/KR19980054177A/en
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Publication of KR100293781B1 publication Critical patent/KR100293781B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/02—Control of vehicle driving stability
    • B60Y2300/045—Improving turning performance, e.g. agility of a vehicle in a curve

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE: A bush for a subframe of a vehicle is provided to improve travelling safety by removing a rolling state slanting a body toward a centrifugal direction. CONSTITUTION: A bush for a subframe in a vehicle comprises a left side member formed on a side portion of a subframe; a right side member installed on the other side portion of the subframe; a first cross member combined to middle portions of the left and right side members; a second cross member arranged between the left and right side members; rubber(41,42) mounted on left and right portions of a first bush(40); recessed groove(41a,42a) formed on lower and upper portions of the rubbers; and a second bush having rubbers forming recessed grooves. Thereby, the bush for the subframe in the vehicle improves travelling safety by removing a rolling state slanting a body toward a centrifugal direction.

Description

자동차의 서브프레임용 부시Bushes for subframes of automobiles

본 발명은 자동차의 서브프레임용 부시에 관한 것으로, 특히 서브프레임의 좌·우측부에 장착되는 부시의 홀이 변경되어, 주행중 발생되는 진동이 저감됨은 물론, 선회 주행시 롤링 현상이 제거되어 주행안정성이 향상되도록 된 자동차의 서브프레임용 부시에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bush for a subframe of an automobile, and in particular, the holes of the bushes mounted on the left and right sides of the subframe are changed, so that vibrations generated during driving are reduced, as well as the rolling phenomenon is eliminated during turning. It relates to a bush for a subframe of a vehicle to be improved.

일반적으로 현가장치는 차축과 차체를 연결하여 주행할 때 노면에서 받는 진동이나 충격을 차체에 직접 전달되지 않도록 하여 차체나 하물의 손상을 방지하고 승차감을 좋게 하는 장치로써, 전방 현가장치는 도1에 도시된 바와 같이, 노면에서 받는 충격을 완화하도록 된 코일스프링과, 이 코일스프링의 자유진동을 억제하여 승차감을 좋게 하도록 된 쇽업소버와, 언더바디의 강도 및 강성을 증진시키도록 된 크로스멤버와, 휠의 움직임을 조절하도록 된 어퍼암과 로어암 및, 자동차가 옆으로 흔들리는 것을 방지하도록 된 스테빌라이저등으로 구성되어 있다.In general, the suspension device is a device that prevents damage to the vehicle body or the load and improves the riding comfort by not transmitting vibrations or shocks received from the road directly when the vehicle is connected by connecting the axle and the vehicle body. As shown, the coil spring is designed to mitigate the impact on the road surface, the shock absorber is designed to suppress the free vibration of the coil spring to improve the ride comfort, the cross member is designed to enhance the strength and rigidity of the underbody, It consists of an upper arm and a lower arm designed to control the movement of the wheel, and a stabilizer designed to prevent the vehicle from shaking sideways.

이러한 구성으로 이루어진 전방 현가장치나 파워트레인(동력전달장치의 부품)을 조립함과 더불어 자동차의 부분적인 골격을 이루도록 된 서브프레임(10)은 도1에 도시된 바와 같이, 4개의 멤버가 기구학적으로 결합되어 전체적인 형상이 井모양을 이루도록 되어 있는 바, 그 구조는, -자형상으로 형성된 제1크로스멤버(1)가 좌측사이드멤버(3)와 우측사이드멤버(4) 사이에 위치되어 일측 끝단은 상기 좌측 사이드멤버(3)의 중간 소정부위와 고정수단을 매개로 단단히 결합됨과 더불어 반대측 끝단은 상기 우측사이드멤버(4)의 중간 소정부위와 단단히 결합되고, -자모양으로 형성된 제2크로스멤버(2)도 좌측사이드멤버(3)와 우측사이드멤버(4)사이에 위치되어 일측 끝단이 상기 좌측사이드멤버(3)의 일측끝단 소정부위와 고정수단을 매개로 단단히 결합됨과 더불어 반대측 끝단은 상기 우측사이드멤버(4)의 일측끝단 소정부위와 단단히 결합된다.The subframe 10, which is configured to form a partial skeleton of the vehicle in addition to assembling the front suspension or the power train (part of the power transmission device) having such a configuration, has four members kinematically, as shown in FIG. The overall shape is combined to form a 井 form, the structure, the first cross member (1) formed in the shape of-is positioned between the left side member (3) and the right side member (4) one end Is firmly coupled to the middle predetermined portion of the left side member 3 and the fixing means, and the opposite end thereof is firmly coupled to the middle predetermined portion of the right side member 4, and the second cross member is formed in a shape of a shape. (2) is also located between the left side member (3) and the right side member (4) so that one end is firmly coupled through a predetermined portion of the one end of the left side member (3) and the fixing means and more The opposite end of the blow is firmly coupled to a predetermined portion of one end of the right side member (4).

따라서 상기와 같은 서브프레임(10)이 설치된 자동차가 주행중 추돌사고시 또는 장애물에 대한 부분적인 충돌사고인 오프셋(Offset)사고시 충돌에너지가 발생되면, 이 충돌에너지는 상기 서브프레임(10)에 의해 효과적으로 흡수되어 탑승자의 안전을 지켜주게 된다.Therefore, when collision energy is generated during an accident of a collision or partial collision with respect to an obstacle while a vehicle in which the subframe 10 is installed as described above is generated, the collision energy is effectively absorbed by the subframe 10. It will protect the occupants' safety.

여기서, 상기 서브프레임(10)은 다수개의 부시(20)를 매개로 차체에 장착되되, 상기 부시(20)의 장착구조는 도2에 도시된 바와 같이, 단면형상에서 좌우측부의 고무(21, 22)에 요부홈이 형성되어 있지 않거나, 또는 좌우측부의 고무(21, 22)에 동일형상의 요부홈(21a, 22a)이 각각 형성되어 있었다.Here, the subframe 10 is mounted to the vehicle body via a plurality of bushes 20, the mounting structure of the bush 20, as shown in Figure 2, in the cross-sectional shape of the rubber 21, 22 The recessed grooves 21a, 22a of the same shape were formed in the rubbers 21, 22 of the left and right sides, respectively.

따라서, 상기 서브프레임(10)이 다수개의 부시(20) 및 고정부재를 매개로 차체에 장착됨으로 인해 주행중 노면으로부터 전달되는 진동 및 충격하중이 상기 부시(20)에 의해 흡수되어 탑승자의 승차감은 향상되지만, 일측 방향으로의 선회주행시 서브프레임(10)에 대해 바디(30)가 원심력방향으로 기울어지는 롤링현상이 발생되어 주행안정성이 저하되는 문제점이 있었다.Therefore, since the subframe 10 is mounted on the vehicle body through the plurality of bushes 20 and the fixing member, vibration and shock loads transmitted from the road surface during driving are absorbed by the bushes 20, thereby improving the passenger's riding comfort. However, there is a problem in that rolling stability in which the body 30 is inclined in the centrifugal force direction with respect to the subframe 10 when turning in one direction is caused, thereby deteriorating driving stability.

즉, 좌측 방향으로의 선회주행시 도3에 도시된 바와 같이, 서브프레임(10)은 지면에 대해 수평인 상태에서 주행을 하게 되지만, 바디(30)는 차체중심(0)이 선회방향(R)에 대해 원심력방향인 우측으로 힘(F)을 받아 기울어지는 롤링현상이 발생되어 주행안정성이 저하되는 문제점이 있었다.That is, when turning in the left direction, as shown in FIG. 3, the subframe 10 travels in a horizontal state with respect to the ground, but the body 30 has the body center (0) in the turning direction (R). There was a problem in that the rolling stability caused by the inclination of the force (F) to the right in the centrifugal force direction with respect to the driving stability is reduced.

이와 같은, 차량의 선회시 발생되는 롤링현상을 방지하도록 통상, 유압장치를 이용한 액티브 현가장치를 사용할 수 있지만, 이러한 액티브 현가장치는 제조원가의 상승이라는 단점이 있게 됨은 물론이다.As such, an active suspension using a hydraulic device can be generally used to prevent the rolling phenomenon generated when the vehicle is turned, but the active suspension has a disadvantage in that the manufacturing cost is increased.

이에 본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 서브프레임의 좌우측부에 배설되는 부시의 형상을 각각 다르게 제작하여 일측 방향으로의 선회주행시 서브프레임에 대해 바디가 원심력방향으로 기울어지는 롤링형상을 제거함으로써 주행안정성이 향상되도록 된 자동차의 서브프레임용 부시를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems, by making the shape of the bush disposed on the left and right sides of the subframe differently, rolling the body inclined in the centrifugal force direction with respect to the subframe when turning in one direction It is an object of the present invention to provide a bush for a subframe of a vehicle in which driving stability is improved by removing the shape.

상기와 같은 목적을 달성하기 위한 본 발명은, 서브프레임의 좌측 하부에 배설되는 제1부시의 단면형상중 좌측부의 고무에는 요부홈이 하부에 형성됨과 더불어 우측부의 고무에는 요부홈이 상부에 형성된 구조로 되어 있다.In order to achieve the above object, the present invention has a recess in which a recess is formed in a lower part of the cross section of the first bush disposed in the lower left of the subframe, and a recess is formed in the rubber of the right part. It is.

또한, 상기 서브프레임의 우측 하부에 배설되는 제2부시의 단면형상중 좌측부의 고무에는 요부홈이 상부에 형성됨과 더불어 우측부의 고무에는 요부홈이 하부에 형성된 구조로 되어 있다.In addition, a recess groove is formed in the upper portion of the rubber of the left side of the cross-sectional shape of the second bush disposed in the lower right of the subframe, and a recess of the recess is formed in the rubber of the right portion.

도1은 일반적으로 서브프레임이 설치된 상태를 나타내는 개략적인 사시도.1 is a schematic perspective view showing a state in which a subframe is generally installed.

도2의 (a)와 (b)는 도1의 A-A선 부분단면도로서, 종래의 부시를 나타내는 단면도.2A and 2B are partial sectional views taken along the line A-A of FIG. 1, showing a conventional bush.

도3은 종래의 부시가 장착된 자동차의 주행상태도.Figure 3 is a driving state of a vehicle equipped with a conventional bush.

도4의 (a)와 (b)는 본 발명에 따른 제1부시와 제2부시의 단면도.4 (a) and 4 (b) are cross-sectional views of the first and second bushes according to the present invention.

도5는 본 발명에 따른 부시가 장착된 자동차의 주행상태도이다.5 is a driving state diagram of a vehicle equipped with a bush according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 제1크로스멤버 2 : 제2크로스멤버1: first cross member 2: second cross member

3 : 좌측사이드멤버 4 : 우측사이드멤버3: left side member 4: right side member

10 : 서브프레임 30 : 바디10: subframe 30: body

40 : 제1부시 41,42,51,52 : 고무40: first bush 41, 42, 51, 52: rubber

41a,42b,51c,52d : 요부홈41a, 42b, 51c, 52d: recessed groove

이하 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도4는 본 발명에 따른 제1부시와 제2부시의 단면도로서, 본 발명은 전술한 종래의 경우와 같이 일측부에 위치된 좌측사이드멤버(3)와, 타측부에 위치된 우측사이드멤버(4)와, 상기 좌측사이드멤버(3)와 우측사이드멤버(4)사이에 위치되어 일측 끝단은 상기 좌측사이드멤버(3)의 중간 소정부위와 고정수단을 매개로 단단히 결합됨과 더불어 반대측 끝단은 상기 우측사이드멤버(4)의 중간 소정부위와 단단히 결합되도록 된 제1크로스멤버(1) 및, 상기 좌측사이드멤버(3)와 우측사이드멤버(4) 사이에 위치되어 일측 끝단이 상기 좌측사이드멤버(3)의 일측끝단 소정부위와 고정수단을 매개로 단단히 결합됨과 더불어 반대측 끝단은 상기 우측사이드멤버(4)의 일측끝단 소정부위와 단단히 결합되도록 된 제2크로스멤버(2)로 이루어져 제1부시와 제2부시를 매개로 차체에 장착되도록 된 자동차의 서브프레임에 있어서, 상기 제1부시(40)의 단면중 좌측부의 고무(41)에는 요부홈(41a)이 하부에 형성됨과 더불어 우측부의 고무(42)에는 요부홈(42a)이 상부에 형성된다.Figure 4 is a cross-sectional view of the first bushing and the second bush according to the present invention, the present invention is a left side member (3) located on one side and the right side member (located on the other side, as in the conventional case described above) 4) and the left side member (3) and the right side member (4) is located between one end is firmly coupled to the middle predetermined portion and the fixing means of the left side member (3) and the opposite end is the The first cross member 1 is firmly coupled to the middle predetermined portion of the right side member 4, and is positioned between the left side member 3 and the right side member 4 so that one end thereof is the left side member ( 3) one side end of the predetermined portion and the fixing means and the other end of the opposite end is composed of a second cross member (2) to be firmly coupled to the predetermined portion of one side end of the right side member (4) Car via second bush In the subframe of the vehicle to be mounted on the groove, the groove 41a is formed in the lower portion of the rubber 41 at the left side of the cross section of the first bush 40, and the groove 42a is formed in the rubber 42 at the right portion. ) Is formed at the top.

그리고, 상기 제2부시(50)의 단면 중 좌측부의 고무(51)에는 요부홈(51a)이 상부에 형성됨과 더불어 우측부의 고무(52)에는 요부홈(52a)이 하부에 형성된다.In addition, a recess groove 51a is formed in the upper portion of the rubber 51 of the left side of the cross section of the second bush 50, and a recess recess 52a is formed in the rubber 52 of the right portion.

따라서, 제1부시(40)의 요부홈(41a, 42a)이 서로 다른 대각선방향으로 반대되는 위치에 형성됨과 더불어 제2부시(50)의 요부홈(51a, 52a)도 서로 대각선방향으로 반대되는 위치에 형성되고, 상기 제1부시(40)와 제2부시(50)이 요부홈(41a, 42a, 51a, 52a)도 서로 대향되도록 형성됨으로 인해 도5에 도시된 바와 같이, 일측 방향으로의 선회 주행시 바디(30)가 선회방향으로 기울어짐으로 인해 롤링형상이 제거되어 주행안정성이 향상된다.Accordingly, the recesses 41a and 42a of the first bush 40 are formed at positions opposite to each other in the diagonal directions, and the recesses 51a and 52a of the second bush 50 are also diagonally opposed to each other. Since the first bushing 40 and the second bushing 50 are formed to face each other, the recesses 41a, 42a, 51a, and 52a are also formed to face each other, as shown in FIG. Since the body 30 is inclined in the turning direction during the turning driving, the rolling shape is removed to improve driving stability.

즉, 본 발명에 따른 제1·2부시(40, 50)의 요부홈(41a, 42a, 51a, 52a)들을 각각 서로 대향되도록 형성하여 선회 시 바디(30)의 차체중심(0)에 대해 상기 제1·2부시(40, 50)에 의해 생성되는 가상의 순간중심(0')이 상대적으로 보다 높게 형성되므로 전술한 종래의 경우와 같이, 좌측 방향으로의 선회주행시 바디(30)의 차체중심(0)이 선회방향(R)에 대해 원심력방향인 우측으로 힘(F)을 받아 기울어지는 롤링현상에 대해 순간중심(0')이 그 반대 방향인 구심력방향인 좌측으로 힘(F')이 발생되어 롤링현상을 제거하여 주행안정성을 유지하게 된다.That is, the recessed grooves 41a, 42a, 51a, 52a of the first and second bushes 40 and 50 according to the present invention are formed to face each other so that the center of the body 30 of the body 30 at the time of turning is equal to the above. Since the virtual instantaneous center (0 ') generated by the first and second bushes (40, 50) is formed relatively higher, the body center of the body (30) when turning in the left direction as in the conventional case described above For a rolling phenomenon in which (0) is inclined to receive the force (F) to the right in the centrifugal direction with respect to the turning direction (R), the instantaneous center of gravity (0 ') is opposite to the centripetal force in the opposite direction to the left (F'). It is generated to remove the rolling phenomenon to maintain the running stability.

이는, 차량이 우측으로 선회하는 경우에도 동일하게 작용하고 효과를 발생함은 물론이다.This, of course, acts the same and produces the effect even when the vehicle turns to the right.

이상 설명한 바와 같이 본 발명에 의하면, 서브프레임의 좌측 하부에 배설되는 제1부시의 단면형상중 좌측부의 고무에는 요부홈이 하부에 형성됨과 더불어 우측부의 고무에는 요부홈이 상부에 형성되고, 상기 서브프레임의 우측 하부에 배설되는 제2부시의 단면형상중 좌측부의 고무에는 요부홈이 상부에 형성됨과 더불어 우측부의 고무에는 요부홈이 형성되어져, 일측 방향으로의 선회 주행시 바디가 선회방향으로 기울어짐으로 인해 롤링형상이 제거되어 주행안정성이 향상되는 효과가 있다.As described above, according to the present invention, in the rubber of the left part of the cross-sectional shape of the first bush disposed in the lower left of the subframe, recessed grooves are formed in the lower part, and recessed grooves are formed in the rubber of the right part. In the cross-sectional shape of the second bush disposed in the lower right side of the frame, recessed grooves are formed in the upper portion of the rubber on the left side, and recessed grooves are formed in the rubber in the right side, so that the body inclines in the turning direction when turning in one direction. Therefore, the rolling shape is removed, thereby improving driving stability.

또한, 본 발명은 선회시 롤링현상을 방지하도록 현가장치에 사용되는 안티롤(Anti-Roll)용 유압장치를 사용하지 않고 부시만으로 안티롤기능을 얻을 수 있는 효과가 있음은 물론이다.In addition, the present invention has the effect that it is possible to obtain the anti-roll function only by the bush without using the anti-roll (Anti-Roll) hydraulic device used in the suspension device to prevent the rolling phenomenon when turning.

Claims (1)

일측부에 위치된 좌측사이드멤버(3)와, 타측부에 위치된 우측사이드멤버(4)와, 상기 좌측사이드멤버(3)와 우측사이드멤버(4)사이에 위치되어 일측 끝단은 상기 좌측사이드멤버(3)의 중간 소정부위와 고정수단을 매개로 결합됨과 더불어 반대측 끝단은 상기 우측사이드멤버(4)의 중간 소정부위와 결합되도록 된 제1크로스멤버(1) 및, 상기 좌측사이드멤버(3)와 우측사이드멤버(4)사이에 위치되어 일측 끝단이 상기 좌측사이드멤버(3)의 일측 끝단 소정부위와 고정수단을 매개로 결합됨과 더불어 반대측 끝단은 상기 우측사이드멤버(4)의 일측끝단 소정부위와 결합되도록 된 제2크로스멤버(2)로 이루어져 제1부시와 제2부시를 매개로 차체에 장착되도록 된 자동차의 서브프레임에 있어서, 상기 제1부시(40)의 단면중 좌측부의 고무(41)에는 요부홈(41a)이 하부에 형성됨과 더불어 우측부의 고무(42)에는 요부홈(42a)이 상부에 형성되는 한편, 상기 제2부시(50)의 단면중 좌측부의 고무(51)에는 요부홈(51a)이 상부에 형성됨과 더불어 우측부의 고무(52)에는 요부홈(52a)이 하부에 형성된 것을 특징으로 하는 자동차의 서브프레임용 부시.It is located between the left side member (3) located on one side, the right side member (4) located on the other side, and the left side member (3) and the right side member (4), one end of the left side The first cross member 1 and the left side member 3 which are coupled to the middle predetermined portion of the member 3 and the fixing means, and the opposite end thereof are coupled to the middle predetermined portion of the right side member 4. ) Is positioned between the right side member (4) and one end is coupled to one end portion of the left side member (3) via the fixing means and the other end is one end of the right side member (4) In a subframe of a vehicle, which is composed of a second cross member (2) adapted to be coupled to a portion, and is mounted on a vehicle body via a first bushing and a second bushing, a rubber of a left part of a cross section of the first bushing (40) 41, the recessed groove 41a has a lower mold In addition, the groove 42a is formed in the upper portion of the rubber 42 at the right side, while the groove 51a is formed in the upper portion of the rubber 51 at the left side of the second bush 50. Bushing for the subframe of the vehicle, characterized in that the recess 52 is formed in the lower portion of the rubber portion 52.
KR1019960073311A 1996-12-27 1996-12-27 Bush for subframe of vehicle KR100293781B1 (en)

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Publication number Priority date Publication date Assignee Title
KR101339210B1 (en) 2007-12-13 2013-12-09 기아자동차 주식회사 Subframe Bush FOR OUT PIPE SEPARATING MEANS

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Publication number Priority date Publication date Assignee Title
KR101449069B1 (en) * 2009-12-02 2014-10-08 현대자동차주식회사 Front body structure of vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101339210B1 (en) 2007-12-13 2013-12-09 기아자동차 주식회사 Subframe Bush FOR OUT PIPE SEPARATING MEANS

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