KR20090125878A - Rear floor combine structure of car - Google Patents

Rear floor combine structure of car Download PDF

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Publication number
KR20090125878A
KR20090125878A KR1020080051922A KR20080051922A KR20090125878A KR 20090125878 A KR20090125878 A KR 20090125878A KR 1020080051922 A KR1020080051922 A KR 1020080051922A KR 20080051922 A KR20080051922 A KR 20080051922A KR 20090125878 A KR20090125878 A KR 20090125878A
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South Korea
Prior art keywords
rear floor
floor
vehicle
cross member
coupling structure
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KR1020080051922A
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Korean (ko)
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김영록
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현대자동차주식회사
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Priority to KR1020080051922A priority Critical patent/KR20090125878A/en
Publication of KR20090125878A publication Critical patent/KR20090125878A/en

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    • 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
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
    • 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
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D27/00—Connections between superstructure or understructure sub-units
    • B62D27/02—Connections between superstructure or understructure sub-units rigid
    • B62D27/023—Assembly of structural joints

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

Abstract

PURPOSE: A rear floor coupling structure of a vehicle is provided to reduce the injury by improving the performance coping with rear collision and improving the distortion strength by forming the closed cross section at a rear end member of the lower part of a rear floor and to simplify the structure by manufacturing the combination rear floor so that a rear floor and the end of a rear cross member are connected. CONSTITUTION: In a rear floor coupling structure of a vehicle, a rear floor(12) is attached to a back panel(20) by welding. Both sides of the rear floor are put on a side member to be supported. A rear cross member(14) is arranged near the side member to support the rear side of the rear floor. A combination rear floor(10) is formed at one time by using a press mold so that the rear floor and the end of the rear cross member are connected. The connection of the combination rear floor is formed to be rounded and a rear end member(30) is formed in the lower part. The closed cross section is formed by attaching the rear end member to the lower part of the back panel and the combination rear floor.

Description

차량의 리어플로어 결합구조 {Rear Floor Combine Structure of Car}Rear Floor Combine Structure of Car}

본 발명은 차량의 리어플로어 결합구조에 관한 것으로서, 더욱 상세하게는 언더바디와 어퍼바디의 단면을 연결하여 비틀림 강성을 향상시키는 구조에 관한 것이다.The present invention relates to a rear floor coupling structure of a vehicle, and more particularly, to a structure that connects the cross section of the underbody and the upper body to improve the torsional rigidity.

일반적으로 자동차의 차체는 프레스공정에 의해 차체의 기본 골격을 이루게 되어 여러 가지 부품이 설치됨과 동시에 차량의 안전을 좌우하는 기본 요소로서, 이러한 차체는 열간 압연 연강판이나 냉간 압연 연강판 등을 사용하여 차체의 골격을 형성하게 되며, 최근에는 강도가 한층 증가된 고장력 강판을 사용하여 차량의 안전성을 증대시키고 있다.In general, the car body forms the basic frame of the car body by the press process, and various components are installed and the basic elements that influence the safety of the vehicle. Such a car body uses hot rolled mild steel sheets or cold rolled steel sheets. To form a skeleton of the vehicle body, and recently, the use of high-strength steel sheet with increased strength has increased the safety of the vehicle.

이와 같은 차체 중 리어플로어(rear floor)는 프레스 등에 의해 일정한 형상으로 성형하며, 성형된 리어플로어의 형상(굴곡형성된 부분이나 폐단면)에 따라 강성의 크기가 달라지고, 더욱이 차체의 후방에 구비되는 만큼 어느 부위보다 더 큰 강성을 요구하게 된다.The rear floor of such a vehicle body is molded into a certain shape by a press or the like, and the rigidity varies depending on the shape of the molded rear floor (bent portion or closed section), and is further provided on the rear of the vehicle body. As much as any site requires greater stiffness.

자동차의 후방 추돌 및 정강성 등의 성능을 확보하기 위하여 리어플로어 구조가 폐단면을 형성하도록 하거나 지지 브래킷 등을 리어플로어 공간에 삽입한다.In order to secure performances such as rear collision and rigidity of the vehicle, the rear floor structure forms a closed section or a support bracket is inserted into the rear floor space.

도 1a와 도 1b는 종래 리어플로어 결합구조를 나타내는 도면이고, 도 2a와 도 2b는 리어플로어 결합부위의 후면도(rear view)와 평면도(top view)이다.1A and 1B are views illustrating a conventional rear floor coupling structure, and FIGS. 2A and 2B are rear and top views of the rear floor coupling portion.

리어플로어(1)는 백패널(back panel)(2)에 용접 부착되고, 상기 리어플로어(1)의 양측변은 각각 사이드멤버(3)의 상면에 얹혀져 지지되며, 상기 사이드멤버(3) 사이로는 리어 크로스멤버(4)가 배치되어서 상기 리어플로어(1)의 후방변을 지지한다.The rear floor 1 is welded to the back panel 2, and both sides of the rear floor 1 are supported on the upper surface of the side member 3, and between the side members 3, respectively. A rear cross member 4 is arranged to support the rear side of the rear floor 1.

미설명 부호 6은 스프링 시트이다.Reference numeral 6 is a spring sheet.

한편 최근 개발되고 있는 차량의 리어부 구조물은 차체 파트와 플랫폼 파트로 나누어진다.Meanwhile, the rear structure of a vehicle that is recently developed is divided into a body part and a platform part.

그러므로 결합을 용이하게 하기 위하여 언더바디의 멤버(사이드멤버(3), 플랫폼 파트)와 어퍼바디의 멤버(개구부 환형구조물(5), 차체 파트)가 모두 강성이 약한 백패널(2)에 마운팅 됨에 따라 승차가 및 내구성능에 큰 영향을 미치는 비틀림 강성에 매우 취약하고, 후방 추돌시에도 단면적으로 매우 취약한 문제점이 있었다.Therefore, both the underbody member (side member (3), platform part) and the upper body member (opening annular structure (5), body part) are mounted on the weak back panel (2) to facilitate the coupling. There is a problem that is very vulnerable to torsional stiffness, which greatly affects the ride value and durability performance, and also very weak in cross section even in the rear collision.

본 발명은 상술한 문제점을 해결하기 위하여 안출된 것으로서, 기존 분리된 리어플로어와 리어 크로스멤버 단부를 연결되도록 한번에 찍어내어 결합 리어플로어를 제작하여 구조를 단순화시키며 상기 리어플로어 하부의 리어 엔드멤버로 페단면을 형성하여 비틀림 강성을 높이고 후방 추돌에 대한 대응 성능을 향상시켜 상해치를 줄일 수 있는 차량의 리어플로어 결합구조를 제공하는데 그 목적이 있다.The present invention has been made in order to solve the above problems, by making a combined rear floor by dipping at a time to connect the existing separate rear floor and the rear cross member end to simplify the structure and to pass to the rear end member of the lower rear floor It is an object of the present invention to provide a rear floor coupling structure of a vehicle that can reduce the incidence by increasing the torsional rigidity by improving the cross section and improving the response performance against the rear collision.

상술한 목적을 달성하기 위한 본 발명에 따른 차량의 리어플로어 결합구조는, 리어플로어가 백패널에 용접 부착되고, 상기 리어플로어의 양측변은 각각 사이드멤버의 상면에 얹혀져 지지되며, 상기 사이드멤버 사이로는 리어 크로스멤버가 배치되는 차량의 리어플로어 결합구조에 있어서,The rear floor coupling structure of the vehicle according to the present invention for achieving the above object, the rear floor is welded to the back panel, both sides of the rear floor are respectively supported on the upper surface of the side member, between the side members In the rear floor coupling structure of a vehicle in which a rear cross member is disposed,

상기 리어플로어와 리어 크로스멤버의 단부가 연결되도록 프레스 금형으로 찍어내어 리어플로어와 리어 크로스멤버가 일체화되는 것을 특징으로 한다.It is characterized in that the rear floor and the rear cross member is integrated by dipping into the press mold so that the ends of the rear floor and the rear cross member are connected.

상술한 과제 해결 수단에 의하면, 결합구조를 단순화하면서도 비틀림 강성을 높이고 후방 추돌에 대한 대응 성능을 향상시켜 상해치를 줄일 수다.According to the above-described problem solving means, it is possible to reduce the injury value by increasing the torsional rigidity and improving the response performance to the rear collision while simplifying the coupling structure.

이하 본 발명의 실시예에 대하여 첨부된 도면을 참고로 그 구성 및 작용을 설명하기로 한다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

도 3은 본 발명에 따른 리어플로어의 분해 사시도이고, 도 4는 도 3에 의해 결합된 상태에서의 정면도이며, 도 5a와 도 5b는 본 발명에 따른 리어플로어 결합부위의 후면도와 평면도이다.Figure 3 is an exploded perspective view of the rear floor according to the present invention, Figure 4 is a front view in a coupled state by Figure 3, Figures 5a and 5b is a rear view and a plan view of the rear floor engaging portion according to the present invention.

리어플로어(12)가 백패널(back panel)(20)에 용접 부착되고, 상기 리어플로어(12)의 양측변은 각각 사이드멤버(50)의 상면에 얹혀져 지지되며, 상기 사이드멤버(50) 사이로는 리어 크로스멤버(14)가 배치되어 상기 리어플로어(12)의 후방변을 지지하되, 상기 리어플로어(12)와 리어 크로스멤버(14)의 단부가 연결되도록 프레스 금형을 이용해 한번에 찍어내어 결합 리어플로어(10)를 제작한다.The rear floor 12 is welded to the back panel 20, and both sides of the rear floor 12 are supported on the upper surface of the side member 50, respectively, between the side members 50. The rear cross member 14 is disposed to support the rear side of the rear floor 12, but is photographed at a time using a press mold so that the ends of the rear floor 12 and the rear cross member 14 are coupled to each other. Produce 10.

즉, 상기 프레스 금형을 이용해 금속재료에 힘을 가해서 소성 변형시켜 굽힘·전단·단면수축 등의 가공을 거쳐 리어플로어(12)와 리어 크로스멤버(14)의 단부가 연결된 결합 리어플로어(10)가 성형된다.That is, the engaging rear floor 10 is connected to the ends of the rear floor member 12 and the rear cross member 14 through plastic deformation by applying a force to the metal material using the press die, and through bending, shearing, and cross-sectional shrinkage. Molded.

이때 결합 리어플로어(10)의 연결부위는 라운드지게 형성되고 그 하부에는 리어 엔드멤버(30)가 구비되어 백패널(20)과 결합 리어플로어(10)의 하부에 부착된다.At this time, the coupling portion of the coupling rear floor 10 is formed to be round and the rear end member 30 is provided at the lower portion of the back panel 20 and the coupling rear floor 10.

상기 리어 엔드멤버(30)는 상부가 개방된 형상으로 백패널(20) 및 결합 리어플로어(10)와 함께 폐단면을 형성하여 구조적인 보강을 이루게 된다.The rear end member 30 forms a closed cross section with the back panel 20 and the coupling rear floor 10 in an open shape to achieve structural reinforcement.

미설명 부호 60은 개구부 환형구조물이다.Reference numeral 60 is an opening annular structure.

이상에서와 같이 리어플로어 앗세이 구조와 백패널 앗세이 구조를 일체화 조립함으로써 공정을 단순화시켜 원가 절감을 유도할 수 있고, 플랫폼적인 차원에서 리어부에 큰 폐단면을 형성하게 되어 언더바디와 어퍼바디의 단면을 연결함으로써 비틀림 강성을 높일 수 있다.As described above, by integrating the rear floor assembly structure and the back panel assembly structure, the process can be simplified to induce cost reduction, and a large closed section is formed on the rear side in terms of the platform. By connecting the cross sections, the torsional rigidity can be increased.

또한, 후방 추돌시 폐단면이 추돌 에너지를 흡수하여 추돌 대응 성능을 향상시켜 상해치를 줄일 수 있다.In addition, during the rear collision, the closed section absorbs the collision energy to improve the collision response performance, thereby reducing the injury value.

도 1a와 도 1b는 종래 리어플로어 결합구조를 나타내는 도면,1a and 1b is a view showing a conventional rear floor coupling structure,

도 2a와 도 2b는 리어플로어 결합부위의 후면도와 평면도,2a and 2b is a rear view and a plan view of the rear floor engaging portion,

도 3은 본 발명에 따른 리어플로어의 분해 사시도,3 is an exploded perspective view of a rear floor according to the present invention;

도 4는 도 3에 의해 결합된 상태에서의 정면도,4 is a front view in the state joined by FIG. 3,

도 5a와 도 5b는 본 발명에 따른 리어플로어 결합부위의 후면도와 평면도.5a and 5b is a rear view and a plan view of the rear floor coupling portion according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10: 결합 리어플로어 12: 리어플로어10: Combined rear floor 12: Rear floor

14: 리어 크로스멤버 20: 백패널14: rear crossmember 20: back panel

30: 리어 엔드멤버 50: 사이드멤버30: rear end member 50: side member

Claims (3)

리어플로어가 백패널에 용접 부착되고, 상기 리어플로어의 양측변은 각각 사이드멤버의 상면에 얹혀져 지지되며, 상기 사이드멤버 사이로는 리어 크로스멤버가 배치되는 차량의 리어플로어 결합구조에 있어서,In a rear floor coupling structure of a vehicle in which a rear floor is welded to a back panel and both sides of the rear floor are respectively mounted on an upper surface of a side member, and a rear cross member is disposed between the side members. 상기 리어플로어와 리어 크로스멤버의 단부가 연결되도록 프레스 금형으로 찍어내어 리어플로어와 리어 크로스멤버가 일체화되는 것을 특징으로 하는 차량의 리어플로어 결합구조.The rear floor coupling structure of the vehicle, characterized in that the rear floor and the rear cross member is cut out by a press mold so that the end of the rear cross member is connected. 제 1 항에 있어서,The method of claim 1, 상기 리어플로어와 리어 크로스멤버의 연결 부위는 라운드지게 형성되고, 그 하부에 리어 엔드멤버가 구비되어 백패널과 결합 리어플로어의 하부에 부착되는 것에 의해 폐단면이 형성되는 것을 특징으로 하는 차량의 리어플로어 결합구조. The rear floor and the rear cross member connecting portion is formed to be round, the rear end member is provided at the lower portion of the rear floor of the vehicle, characterized in that the closed section is formed by being attached to the lower portion of the back panel and the coupling rear floor Coupling structure. 제 2 항에 있어서,The method of claim 2, 상기 리어 엔드멤버는 상방이 개방된 것을 특징으로 하는 차량의 리어플로어 결합구조.The rear end member is a rear floor coupling structure of the vehicle, characterized in that the top is open.
KR1020080051922A 2008-06-03 2008-06-03 Rear floor combine structure of car KR20090125878A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107416040A (en) * 2016-03-29 2017-12-01 三菱自动车工业株式会社 Body panels integrated structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107416040A (en) * 2016-03-29 2017-12-01 三菱自动车工业株式会社 Body panels integrated structure

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