KR20090062302A - Reinforcement structure of rear floor for vehicle - Google Patents

Reinforcement structure of rear floor for vehicle Download PDF

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Publication number
KR20090062302A
KR20090062302A KR1020070129460A KR20070129460A KR20090062302A KR 20090062302 A KR20090062302 A KR 20090062302A KR 1020070129460 A KR1020070129460 A KR 1020070129460A KR 20070129460 A KR20070129460 A KR 20070129460A KR 20090062302 A KR20090062302 A KR 20090062302A
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KR
South Korea
Prior art keywords
rear floor
coupling portion
lower coupling
vehicle
cross member
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KR1020070129460A
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Korean (ko)
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윤경렬
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현대자동차주식회사
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Priority to KR1020070129460A priority Critical patent/KR20090062302A/en
Publication of KR20090062302A publication Critical patent/KR20090062302A/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
    • 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
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/12—Production or manufacturing of vehicle parts
    • B60Y2410/124—Welded parts

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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

A reinforcement structure of a rear floor for a vehicle is provided to prevent the deformation of a rear floor due to load applied on a trailing arm by forming a flange part coupled on an upper joint, a lower joint, a side member and a cross member. A reinforcement structure of a rear floor for a vehicle comprises a reinforcing member(10) installed at the crossing point of a cross member and a side member. The reinforcing member comprises: a lower joint(14) coupled on a rear floor; an upper joint being upwardly apart from the lower joint; and a base part(16) connecting the upper joint and the lower joint. A flange part(18) which is coupled on the side member and the cross member is formed on both ends of the upper joint and the lower joint.

Description

차량용 리어플로어의 보강구조물{Reinforcement structure of rear floor for vehicle}Reinforcement structure of rear floor for vehicle}

본 발명은 차량용 리어플로어의 보강구조물에 관한 것으로서, 보다 상세하게는 리어플로어가 트레일링암에 전해지는 하중에 의해 변형되는 것을 방지하기 위한 차량용 리어플로어의 보강구조물에 관한 것이다.       The present invention relates to a reinforcement structure of a vehicle rear floor, and more particularly, to a reinforcement structure of a vehicle rear floor to prevent the rear floor from being deformed by a load transmitted to the trailing arm.

도 1은 일반적인 차량의 후방 하부 차체를 나타낸 저면도이고, 도 2는 도 1에 점선으로 구획한 A부분의 절개사시도이다.       1 is a bottom view showing a rear lower vehicle body of a typical vehicle, and FIG. 2 is a cutaway perspective view of a portion A divided by a dotted line in FIG. 1.

일반적으로 차량 후방부는 차륜(1)을 지지하는 너클과 일체로 이루어져 차체를 전후방향으로 지지하는 트레일링암(2)이 차체 양측에 구비된 사이드멤버(4)에 마운팅브래킷(3)으로 결합되어 차륜(1)으로부터 전해지는 하중을 쇽업소버에 전달하고, 차체의 좌우방향으로 상기 사이드멤버(4)를 연결하는 크로스멤버(5)가 설치되며, 차체의 바닥면을 형성하는 리어플로어(6)가 상기 사이드멤버(4) 및 크로스멤 버(5)에 결합된다.       Generally, the rear part of the vehicle is integrally formed with a knuckle for supporting the wheel 1, and the trailing arm 2 for supporting the vehicle body in the front-rear direction is coupled to the side member 4 provided on both sides of the vehicle body by a mounting bracket 3. A cross member 5 for transmitting the load transmitted from (1) to the shock absorber and connecting the side members 4 in the left and right directions of the vehicle body is provided, and the rear floor 6 forming the bottom surface of the vehicle body is provided. It is coupled to the side member 4 and the cross member (5).

상기와 같이 구성된 일반적인 차량용 리어플로어의 구조는 차륜(1)으로부터 트레일링암(2)에 전해지는 하중에 의해, 도 1에 점선으로 구획한 사이드멤버(4)와 크로스멤버(5)의 코너부 즉, 교차지점인 ' A '부에 별도의 보강부재가 없기 때문에 리어플로어(6)의 변형이 발생되는 문제점이 있다.The structure of a general vehicle rear floor constructed as described above is a corner portion of the side member 4 and the cross member 5, which are divided by a dotted line in FIG. 1 by a load transmitted from the wheel 1 to the trailing arm 2, namely. There is a problem that deformation of the rear floor 6 occurs because there is no separate reinforcing member at the 'A' portion of the intersection.

본 발명은 리어플로어가 트레일링암에 전해지는 하중에 의해 변형되는 것을 방지하기 위한 차량용 리어플로어의 보강구조물을 제공하는데 그 목적이 있다.It is an object of the present invention to provide a reinforcement structure of a vehicle rear floor for preventing the rear floor from being deformed by a load transmitted to the trailing arm.

본 발명은 차량의 사이드멤버와 크로스멤버에 결합된 리어플로어가 트레일링암에 전해지는 하중에 의해 변형되는 것을 방지하기 위하여 상기 사이드멤버와 크로스멤버의 교차지점에 설치되는 보강부재를 포함하고, 상기 보강부재는 상기 리어플로어에 결합되는 하결합부와, 상기 하결합부로부터 상방향으로 소정간격 이격되는 상결합부와, 상기 상결합부 및 하결합부를 연결하는 베이스부를 포함하고, 상기 상결합부 및 하결합부의 양단에는 상기 사이드멤버 및 크로스멤버에 각각 결합되는 플랜지부가 형성되는 차량용 리어플로어의 보강구조물을 제공한다.The present invention includes a reinforcement member installed at an intersection of the side member and the cross member to prevent the rear floor coupled to the side member and the cross member of the vehicle from being deformed by the load transmitted to the trailing arm. The member includes a lower coupling part coupled to the rear floor, an upper coupling part spaced apart from the lower coupling part by a predetermined distance in an upward direction, a base part connecting the upper coupling part and the lower coupling part, and the upper coupling part and Both ends of the lower coupling portion provide a reinforcement structure of a vehicle rear floor having a flange portion coupled to the side member and the cross member, respectively.

상기 상결합부의 양단은 하측으로 절곡되어 상기 플랜지부가 형성되고, 상기 하결합부의 양단은 상측으로 절곡되어 상기 플랜지부가 형성될 수 있다.      Both ends of the upper coupling portion may be bent downward to form the flange portion, and both ends of the lower coupling portion may be bent upward to form the flange portion.

상기 하결합부는 상기 리어플로어에 용접 결합될 수 있다.      The lower coupling part may be welded to the rear floor.

상기 플랜지부는 상기 사이드멤버 및 크로스멤버에 각각 용접 결합될 수 있다.      The flange portion may be welded to the side member and the cross member, respectively.

상기 사이드멤버와 크로스멤버의 교차지점으로 갈수록 상기 상결합부 및 하결합부의 길이가 작아지도록 상기 상결합부 및 하결합부의 양단이 비스듬히 절곡되어 상기 플랜지부가 형성될 수 있다.      Both flanges may be formed by bending both ends of the upper coupling portion and the lower coupling portion at an angle so that the length of the upper coupling portion and the lower coupling portion becomes smaller toward the intersection point of the side member and the cross member.

본 발명에 따른 차량용 리어플로어의 보강구조물은 리어플로어에 결합되는 하결합부와, 상기 하결합부로부터 상방향으로 소정간격 이격되는 상결합부와, 상기 상결합부 및 하결합부를 연결하는 베이스부를 포함하고, 상기 상결합부 및 하결합부의 양단에는 상기 사이드멤버 및 크로스멤버에 각각 결합되는 플랜지부가 형성됨으로써, 리어플로어가 트레일링암에 전해지는 하중에 의해 변형되는 것을 방지할 수 있다.The reinforcement structure of the vehicle rear floor according to the present invention includes a lower coupling part coupled to the rear floor, an upper coupling part spaced apart from the lower coupling part by a predetermined interval in an upward direction, and a base part connecting the upper coupling part and the lower coupling part. And a flange portion coupled to each of the side member and the cross member at both ends of the upper coupling portion and the lower coupling portion, thereby preventing the rear floor from being deformed by the load transmitted to the trailing arm.

상기한 효과가 있는 본 발명의 실시 예를 첨부된 도면을 참조하여 상세히 설명한다.       An embodiment of the present invention having the above-described effect will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 보강부재가 도시된 사시도이고, 도 4는 본 발명에 따 른 보강부재의 결합상태가 도시된 사시도이다.      3 is a perspective view showing a reinforcing member according to the present invention, Figure 4 is a perspective view showing a coupling state of the reinforcing member according to the present invention.

도 3 및 도 4에는 본 발명에 따른 차량용 리어플로어의 보강구조물이 도시되어 있다. 여기서, 종래 기술과 동일한 도면부호는 동일한 부재를 나타냄을 미리 밝혀둔다.3 and 4 show the reinforcement structure of the vehicle rear floor according to the present invention. Here, the same reference numerals as in the prior art indicate that the same members are represented.

도 3 및 도 4를 참조하면, 본 발명에 따른 차량용 리어플로어의 보강구조물은 차량의 사이드멤버(4)와 크로스멤버(5)에 결합된 리어플로어(6)가 트레일링암(2)에 전해지는 하중에 의해 변형되는 것을 방지하기 위하여 상기 사이드멤버(4)와 크로스멤버(5)의 교차지점에 설치되는 보강부재(10)를 포함하고, 상기 보강부재(10)는 상기 리어플로어(6)에 결합되는 하결합부(14)와, 상기 하결합부(14)로부터 상방향으로 소정간격 이격되는 상결합부(12)와, 상기 상결합부(12) 및 하결합부(14)를 연결하는 베이스부(16)를 포함하고, 상기 상결합부(12) 및 하결합부(14)의 양단에는 상기 사이드멤버(4) 및 크로스멤버(5)에 각각 결합되는 플랜지부(18)가 형성된다.3 and 4, the reinforcement structure of the vehicle rear floor according to the present invention is a rear floor 6 coupled to the side member 4 and the cross member 5 of the vehicle is transmitted to the trailing arm 2. It includes a reinforcing member 10 is installed at the intersection of the side member 4 and the cross member 5 to prevent deformation due to the load, the reinforcing member 10 to the rear floor (6) A lower coupling part 14 to be coupled, an upper coupling part 12 spaced apart from the lower coupling part 14 by a predetermined interval in the upward direction, and connecting the upper coupling part 12 and the lower coupling part 14 to each other. A base portion 16 is formed, and flange portions 18 are formed at both ends of the upper coupling portion 12 and the lower coupling portion 14 to be coupled to the side member 4 and the cross member 5, respectively. .

상기 상결합부(12)의 양단은 하측으로 절곡되어 상기 플랜지부(18)가 형성되고, 상기 하결합부(14)의 양단은 상측으로 절곡되어 상기 플랜지부(18)가 형성된다. 물론, 상기 상결합부(12)의 양단은 상측으로 절곡되어 상기 플랜지부(18)가 형성될 수도 있다.      Both ends of the upper coupling portion 12 are bent downward to form the flange portion 18, and both ends of the lower coupling portion 14 are bent upward to form the flange portion 18. Of course, both ends of the phase coupling portion 12 may be bent upward to form the flange portion 18.

상기 하결합부(14)는 상기 리어플로어(6)에 용접 결합된다. 물론, 상기 하결합부(14)는 상기 리어플로어(6)에 볼트나 리벳등의 체결부재에 의해 결합될 수도 있다.      The lower coupling part 14 is welded to the rear floor 6. Of course, the lower coupling portion 14 may be coupled to the rear floor 6 by fastening members such as bolts or rivets.

상기 플랜지부(18)는 상기 사이드멤버(4) 및 크로스멤버(5)에 각각 용접 결합된다. 물론, 상기 플랜지부(18)는 상기 사이드멤버(4) 및 크로스멤버(5)에 볼트나 리벳등의 체결부재에 의해 결합될 수도 있다.      The flange portion 18 is welded to the side member 4 and the cross member 5, respectively. Of course, the flange portion 18 may be coupled to the side member 4 and the cross member 5 by fastening members such as bolts or rivets.

또한, 상기 상결합부(12) 및 하결합부(14)는 상기 사이드멤버(4) 및 크로스멤버(5)가 교차되는 형상에 대응하여 상기 사이드멤버(4)와 크로스멤버(5)의 교차지점으로 갈수록 상기 상결합부(12) 및 하결합부(14)의 길이가 작아지도록 상기 상결합부(12) 및 하결합부(14)의 양단이 비스듬히 절곡되어 상기 플랜지부(18)가 형성된다.      In addition, the upper coupling portion 12 and the lower coupling portion 14 cross the side member 4 and the cross member 5 corresponding to the shape in which the side member 4 and the cross member 5 intersect. Both ends of the upper coupling portion 12 and the lower coupling portion 14 are bent at an angle so that the length of the upper coupling portion 12 and the lower coupling portion 14 decreases toward the point to form the flange portion 18. do.

상기와 같이 구성된 본 발명인 차량용 리어플로어의 보강구조물은 트레일링암(2)에 전해지는 하중에 의해 변형되기 쉬운 리어플로어(6)를 높은 강성을 가진 사이드멤버(4) 및 크로스멤버(5)에 결합함으로써, 리어플로어(5)의 변형을 방지할 수 있게 된다.The reinforcement structure of the vehicle rear floor of the present invention configured as described above is coupled to the side member 4 and the cross member 5 having a high rigidity to the rear floor 6 which is easily deformed by the load transmitted to the trailing arm 2. As a result, the deformation of the rear floor 5 can be prevented.

한편, 일반적인 리어플로어(6)는 강성을 증대시키기 위해 굴곡면 적용을 하는데, 트레일링암(2) 측면의 리어플로어(6)는 연료탱크가 장착되기 때문에 굴곡면 적용을 하지 않고 평평하게 유지해야 한다. 또한, SUV/MPV 차량들은 2열 및 3열 시트가 전후 슬라이딩 및 폴딩이 가능한 구조로 되어 있는데, 이를 위해서는 리어플로어(6)를 평평하게 유지해야 한다. 이러한, 굴곡면 적용이 어려운 리어플로어(6)의 강성을 증대시키기 위해 본 발명인 차량용 리어플로어의 보강구조물을 적용하 여, 트레일링암(2)에 전해지는 하중에 의해 리어플로어(6)가 변형되는 것을 효과적으로 방지할 수 있게 된다.On the other hand, the general rear floor (6) is applied to the curved surface to increase the rigidity, the rear floor (6) of the trailing arm (2) should be kept flat without applying the curved surface because the fuel tank is mounted. . In addition, the SUV / MPV vehicles have a structure in which the two-row and three-row seats can be slid and folded back and forth, which requires keeping the rear floor 6 flat. The rear floor 6 is deformed by a load transmitted to the trailing arm 2 by applying the reinforcement structure of the vehicle rear floor of the present invention in order to increase the rigidity of the rear floor 6 which is difficult to apply the curved surface. Can be effectively prevented.

본원 발명에 따른 차량용 리어플로어의 보강구조물을 사용하면, 리어플로어가 트레일링암에 전해지는 하중에 의해 변형되는 것을 방지할 수 있다.       By using the reinforcement structure of the vehicle rear floor according to the present invention, the rear floor can be prevented from being deformed by the load transmitted to the trailing arm.

도 1은 일반적인 차량의 후방 하부 차체를 나타낸 저면도이다.1 is a bottom view illustrating a rear lower vehicle body of a typical vehicle.

도 2는 도 1에 점선으로 구획한 A부분의 절개사시도이다.FIG. 2 is a cutaway perspective view of a portion A divided by a dotted line in FIG. 1. FIG.

도 3은 본 발명에 따른 보강부재가 도시된 사시도이다.3 is a perspective view showing a reinforcing member according to the present invention.

도 4는 본 발명에 따른 보강부재의 결합상태가 도시된 사시도이다.4 is a perspective view showing a coupled state of the reinforcing member according to the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

2:트레일링암 4:사이드멤버2: trailing arm 4: side member

5:크로스멤버 6:리어플로어5: cross member 6: rear floor

10:보강부재 12:상결합부10: reinforcing member 12: phase coupling

14:하결합부 16:베이스부14: Lower coupling part 16: Base part

18:플랜지부It is a flange part 18

Claims (5)

차량의 사이드멤버와 크로스멤버에 결합된 리어플로어가 트레일링암에 전해지는 하중에 의해 변형되는 것을 방지하기 위하여 상기 사이드멤버와 크로스멤버의 교차지점에 설치되는 보강부재를 포함하고,A reinforcement member installed at an intersection of the side member and the cross member to prevent the rear floor coupled to the side member and the cross member of the vehicle from being deformed by the load transmitted to the trailing arm, 상기 보강부재는 상기 리어플로어에 결합되는 하결합부와, 상기 하결합부로부터 상방향으로 소정간격 이격되는 상결합부와, 상기 상결합부 및 하결합부를 연결하는 베이스부를 포함하고,       The reinforcing member includes a lower coupling portion coupled to the rear floor, an upper coupling portion spaced apart from the lower coupling portion by a predetermined distance in an upward direction, and a base portion connecting the upper coupling portion and the lower coupling portion, 상기 상결합부 및 하결합부의 양단에는 상기 사이드멤버 및 크로스멤버에 각각 결합되는 플랜지부가 형성되는 차량용 리어플로어의 보강구조물.       Reinforcing structures of the vehicle rear floor is formed with flanges coupled to the side member and the cross member at both ends of the upper coupling portion and the lower coupling portion, respectively. 청구항 1에 있어서,       The method according to claim 1, 상기 상결합부의 양단은 하측으로 절곡되어 상기 플랜지부가 형성되고, 상기 하결합부의 양단은 상측으로 절곡되어 상기 플랜지부가 형성되는 차량용 리어플로어의 보강구조물.      Both ends of the upper coupling portion is bent downward to form the flange portion, and both ends of the lower coupling portion are bent upwards to form the reinforcement structure of the vehicle rear floor. 청구항 1에 있어서,The method according to claim 1, 상기 하결합부는 상기 리어플로어에 용접 결합되는 차량용 리어플로어의 보강구조물.      The lower coupling part is a reinforcement structure of a vehicle rear floor welded to the rear floor. 청구항 1 또는 청구항 2에 있어서,The method according to claim 1 or 2, 상기 플랜지부는 상기 사이드멤버 및 크로스멤버에 각각 용접 결합되는 차량용 리어플로어의 보강구조물.      The flange portion reinforcement structure of the vehicle rear floor is welded to the side member and the cross member, respectively. 청구항 1 또는 청구항2에 있어서,       The method according to claim 1 or 2, 상기 사이드멤버와 크로스멤버의 교차지점으로 갈수록 상기 상결합부 및 하결합부의 길이가 작아지도록 상기 상결합부 및 하결합부의 양단이 비스듬히 절곡되어 상기 플랜지부가 형성되는 차량용 리어플로어의 보강구조물.      Reinforcing structure of a vehicle rear floor, the flange portion is formed by bent both ends of the upper coupling portion and the lower coupling portion obliquely so that the length of the upper coupling portion and the lower coupling portion toward the intersection of the side member and the cross member.
KR1020070129460A 2007-12-12 2007-12-12 Reinforcement structure of rear floor for vehicle KR20090062302A (en)

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