KR20080003992A - A body mounting structure of sub frame for a vehicle - Google Patents

A body mounting structure of sub frame for a vehicle Download PDF

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Publication number
KR20080003992A
KR20080003992A KR1020060062397A KR20060062397A KR20080003992A KR 20080003992 A KR20080003992 A KR 20080003992A KR 1020060062397 A KR1020060062397 A KR 1020060062397A KR 20060062397 A KR20060062397 A KR 20060062397A KR 20080003992 A KR20080003992 A KR 20080003992A
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KR
South Korea
Prior art keywords
rubber plate
plate
vehicle
mounting structure
body mounting
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Application number
KR1020060062397A
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Korean (ko)
Inventor
홍덕희
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현대자동차주식회사
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Priority to KR1020060062397A priority Critical patent/KR20080003992A/en
Publication of KR20080003992A publication Critical patent/KR20080003992A/en

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

A frame mounting structure of a vehicle subframe is provided to improve driving comfort by preventing vibration and noise from being generated from a lower portion of a vehicle frame. A frame mounting structure of a vehicle subframe comprises: a steel plate bushing(23) installed between a lower rubber plate(21) and an upper rubber plate(22), the upper and lower rubber plates fastened with a bolt(24) and a nut(25), a coil spring(26) installed between the upper and lower rubber plates inside the spaced steel plate bushing, and a damping alloy plate(27) installed at a lower end of the upper rubber plate. In addition, a bearing(28) is installed on a lower circumference of the upper rubber plate.

Description

차량 서브 프레임의 차체 마운팅 구조{a body mounting structure of sub frame for a vehicle}Body mounting structure of sub frame for a vehicle

도 1은 종래의 서브 프레임 차체 마운팅 구조의 사시도1 is a perspective view of a conventional sub-frame body mounting structure

도 2는 동 종래 구조의 요부 종단면도2 is a longitudinal sectional view showing main parts of the conventional structure.

도 3은 본 발명의 한 실시예의 사시도3 is a perspective view of one embodiment of the present invention;

도 4는 동 실시예의 요부 종단면도4 is a longitudinal sectional view showing main parts of the embodiment;

< 도면의 주요 부분에 대한 부호 설명 ><Explanation of Signs of Major Parts of Drawings>

10 : 서브 프레임 21 : 하부 고무판10: subframe 21: lower rubber plate

22 : 상부 고무판 23 : 이격 철판부싱22: upper rubber plate 23: spaced steel plate bushing

24 : 체결볼트 25 : 너트24: Fastening Bolt 25: Nut

26 : 코일스프링 27 : 방진합금판26: coil spring 27: dustproof alloy plate

28 : 베어링28: bearing

본 발명은 차량의 차체를 서브 프레임과 연결하기 위한 서브 프레임의 차체 마운팅 구조에 관한 것으로, 더 자세하게는 차체와 서브 프레임을 고무로 절연하지 않고 코일스프링으로 절연하면서 스프링 상수값을 최소화하는 것에 관한 것이다.The present invention relates to a vehicle body mounting structure of a subframe for connecting a vehicle body with a subframe, and more particularly, to minimizing a spring constant value while insulating the body and the subframe with a coil spring instead of rubber. .

일반적으로 차량의 서브 프레임(Sub Frame)을 차체에 장착하는 데킹(Decking) 부위는 진동을 절연하고 시스템을 연결하는 역할을 하며, 본 발명은 이 데킹 부위에 마련되는 서브 프레임의 차체 마운팅 구조에 관계한다.In general, a decking portion for mounting a subframe of a vehicle to a vehicle body insulates vibration and connects a system, and the present invention relates to a vehicle body mounting structure of a subframe provided in the decking portion. do.

종래에 있어서 차량의 서브 프레임 구조는 도 1 및 도 2와 같이 서브 프레임(10')과 차체의 마운팅 부위(A')가 진동소음 개선 및 승차감 개선을 위하여 고무부시(20')로 진동을 절연하는 형태로 되어 있다.In the conventional subframe structure of the vehicle, as shown in Figs. 1 and 2, the subframe 10 'and the mounting portion A' of the vehicle body insulate the vibration with the rubber bush 20 'to improve vibration noise and ride comfort. It is in a form to say.

그러나 상기 종래의 구조는 타이어 및 차체 하부에서 발생하는 진동 및 소음이 차량 내부로 유입되는 것을 효과적으로 방지하지 못하는 문제가 있었고, 그에 따라 상기 종래의 구조를 채용하는 차량의 경우 북미 신차품질조사(IQS : Initial Quality Study) 점수에서 타이어 소음 및 승차감이 항상 개선의 대상이 되고 있는 실정이었다.However, the conventional structure has a problem in that the vibration and noise generated from the tire and the lower part of the vehicle body does not effectively prevent the inflow into the vehicle. Accordingly, in the case of the vehicle employing the conventional structure, the North American New Car Quality Survey (IQS: In the Initial Quality Study score, tire noise and ride comfort have always been the subject of improvement.

본 발명은 상기 종래 구조의 제결함을 감안하여 안출한 것이며, 그 목적이 차체 하부에서 발생하는 진동 및 소음이 차량 내부로 유입되는 것을 효과적으로 방지할 수 있도록 하는 차량 서브 프레임의 차체 마운팅 구조를 제공하는 데에 있는 것이다.The present invention has been made in view of the deficiencies of the conventional structure, the object of which is to provide a vehicle body mounting structure of the vehicle sub-frame to effectively prevent the vibration and noise generated from the lower body body to be introduced into the vehicle It is in des.

본 발명은 상기의 목적을 달성하기 위하여 차체와 서브 프레임을 연결하는 부위를 고무부시로 절연하지 않고 코일스프링을 절연하면서 상하방향 스프링 상수값을 최소화하는 것을 특징으로 하며, 이하 그 구체적인 기술내용을 첨부도면에 의해 더욱 자세히 설명하면 다음과 같다.The present invention is characterized by minimizing the vertical spring constant value while insulating the coil spring without insulating the portion connecting the vehicle body and the sub-frame with a rubber bush to achieve the above object, the following detailed technical information attached If described in more detail by the drawings as follows.

즉, 도 1에는 본 발명의 한 실시예의 사시도가 도시되어 있고, 도 2에는 동 실시예의 요부 종단면도가 도시되어 있는 바, 차량의 서브 프레임(10)을 차체에 장착하는 데킹 부위(서브프레임과 차체의 마운팅 부위)에 마련되는 차량 서브 프레임의 차체 마운팅 구조를 구성함에 있어서, 하부 고무판(21)과 상부 고무판(22) 사이에 이격 철판부싱(23)을 설치하고, 하부 고무판(21)과 상부 고무판(22)을 체결볼트(24)와 너트(25)로 체결하되, 이격 철판부싱(23) 내부의 하부 고무판(21)과 상부 고무판(22)의 사이에 코일스프링(26)을 설치하고, 상부 고무판(22)의 상단에 방진합금판(27)을 설치하여서 되는 것이며, 아울러 상부 고무판(22)의 하부 둘레에 베어링(28)을 설치하여서 되는 것이다.That is, Fig. 1 shows a perspective view of one embodiment of the present invention, and Fig. 2 shows a longitudinal sectional view of the main part of the embodiment, which shows a decking part (subframe and In constructing the vehicle body mounting structure of the vehicle subframe provided in the vehicle body mounting portion), a spaced steel plate bushing 23 is provided between the lower rubber plate 21 and the upper rubber plate 22, and the lower rubber plate 21 and the upper rubber plate 21 are mounted. The rubber plate 22 is fastened with a fastening bolt 24 and a nut 25, and a coil spring 26 is installed between the lower rubber plate 21 and the upper rubber plate 22 inside the spaced iron plate bushing 23. The anti-vibration alloy plate 27 is provided in the upper end of the upper rubber plate 22, and the bearing 28 is provided in the lower periphery of the upper rubber plate 22. As shown in FIG.

본 발명에 있어서 상부 고무판(22)의 상단에 설치되는 방진합금판(27)은 재료 내부의 매커니즘을 이용하여 진동을 받았을 때에 진동을 감쇠시키는 기능이 있는 방진합금(防振合金, high damping alloy)으로 제작되는 것이며, 방진합금의 이러한 기능은 담금질에 의해 생성되는 마텐사이트(martensite) 조직 내에서의 쌍정 (雙晶)의 운동에 의한다.In the present invention, the anti-vibration alloy plate 27 provided on the upper end of the upper rubber plate 22 is a high damping alloy having a function of damping vibration when subjected to vibration by using a mechanism inside the material. This function of the anti-vibration alloy is due to the movement of twins in the martensite tissue produced by quenching.

상기에서 쌍정(雙晶)은 같은 종류의 광물에서 2개의 결정이 특정한 결정면이나 결정축에 대하여 대칭적으로 결합한 1개체의 결정을 말한다.In the above, twin refers to a single crystal in which two crystals are bonded symmetrically about a specific crystal plane or crystal axis in the same kind of mineral.

상기와 같이 구성된 본 발명에 있어서는 코일스프링(26)을 통한 1차감쇠 작용과 방진합금판(27)을 통한 2차감쇠 작용으로 서브 프레임(10)을 통하여 들어오는 가진 주파수를 상쇄함은 물론 상하방향 스프링 특성을 부드럽게 하여 승차감을 향상시킬 수 있게 된다.In the present invention configured as described above, the primary attenuation action through the coil spring 26 and the secondary attenuation action through the anti-vibration alloy plate 27, as well as offset the excitation frequency coming through the sub-frame 10, as well as up and down direction It is possible to improve riding comfort by softening the spring characteristics.

즉, 도 3과 같이 서브 프레임(10)을 통하여 들어오는 주파수 변위를 일차적으로 코일스프링(26)에서 감쇠시키고, 상부 고무판(22)의 상단에 설치되는 방진합금판(27)을 통해 2차적으로 감쇠하여 차체로 전달되는 주파수 진폭 및 상하유동을 최소화하게 되며, 상부 고무판(22)의 하단에 설치된 베어링(28)을 통해 전후좌우 변위에 대해서도 진동특성을 최소화할 수 있게 된다.That is, as shown in FIG. 3, the frequency displacement entering through the subframe 10 is primarily attenuated in the coil spring 26 and secondly attenuated through the anti-vibration alloy plate 27 installed on the upper end of the upper rubber plate 22. By minimizing the frequency amplitude and the vertical flow delivered to the vehicle body, it is possible to minimize the vibration characteristics for the front, rear, left and right displacement through the bearing 28 installed on the lower end of the upper rubber plate (22).

이상에서와 같이 본 발명은 차체와 서브 프레임을 연결하는 부위를 고무부시로 절연하지 않고 코일스프링을 절연하면서 상하방향 스프링 상수값을 최소화한 것으로, 본 발명에 의하면 서브 프레임을 통하여 들어오는 가진 주파수를 상쇄함은 물론 상하방향 스프링 특성을 부드럽게 하여 차체 하부에서 발생하여 차량 내부로 유입되는 진동 및 소음을 저감할 수 있게 되고 승차감을 크게 향상시킬 수 있게 되는 등의 효과를 얻을 수 있게 된다.As described above, the present invention minimizes the vertical spring constant value while insulating the coil spring without insulating the portion connecting the vehicle body and the subframe with the rubber bush. According to the present invention, the excitation frequency entering through the subframe is canceled. In addition, by softening the up and down spring characteristics, the vibration and noise generated from the lower part of the vehicle body can be reduced and the riding comfort can be greatly improved.

Claims (2)

하부 고무판(21)과 상부 고무판(22) 사이에 이격 철판부싱(23)을 설치하고, 하부 고무판(21)과 상부 고무판(22)을 체결볼트(24)와 너트(25)로 체결하되, 이격 철판부싱(23) 내부의 하부 고무판(21)과 상부 고무판(22)의 사이에 코일스프링(26)을 설치하고, 상부 고무판(22)의 하단에 방진합금판(27)을 설치한 것을 특징으로 하는 차량 서브 프레임의 차체 마운팅 구조.A spaced steel plate bushing 23 is installed between the lower rubber plate 21 and the upper rubber plate 22, and the lower rubber plate 21 and the upper rubber plate 22 are fastened with a fastening bolt 24 and a nut 25, but spaced apart from each other. The coil spring 26 is installed between the lower rubber plate 21 and the upper rubber plate 22 inside the steel plate bushing 23, and the anti-vibration alloy plate 27 is installed at the lower end of the upper rubber plate 22. Body mounting structure of the vehicle subframe. 제1항에 있어서, 상부 고무판(22)의 하부 둘레에 베어링(28)을 설치한 것을 특징으로 하는 차량 서브 프레임의 차체 마운팅 구조.2. The vehicle body mounting structure of claim 1, wherein a bearing (28) is provided around the lower portion of the upper rubber plate (22).
KR1020060062397A 2006-07-04 2006-07-04 A body mounting structure of sub frame for a vehicle KR20080003992A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107253494A (en) * 2017-07-25 2017-10-17 江苏中色锐毕利实业有限公司 A kind of aluminium alloy bicycle frame structure of new-energy automobile
KR20210029036A (en) 2019-09-05 2021-03-15 현대자동차주식회사 Mounting bush assembly for a subframe of a vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107253494A (en) * 2017-07-25 2017-10-17 江苏中色锐毕利实业有限公司 A kind of aluminium alloy bicycle frame structure of new-energy automobile
KR20210029036A (en) 2019-09-05 2021-03-15 현대자동차주식회사 Mounting bush assembly for a subframe of a vehicle

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