KR100885219B1 - Structure of cross member for vehicle - Google Patents

Structure of cross member for vehicle Download PDF

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Publication number
KR100885219B1
KR100885219B1 KR1020070128653A KR20070128653A KR100885219B1 KR 100885219 B1 KR100885219 B1 KR 100885219B1 KR 1020070128653 A KR1020070128653 A KR 1020070128653A KR 20070128653 A KR20070128653 A KR 20070128653A KR 100885219 B1 KR100885219 B1 KR 100885219B1
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KR
South Korea
Prior art keywords
center floor
cross member
vehicle
connection panel
center
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KR1020070128653A
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Korean (ko)
Inventor
이원희
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지엠대우오토앤테크놀로지주식회사
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Priority to KR1020070128653A priority Critical patent/KR100885219B1/en
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Publication of KR100885219B1 publication Critical patent/KR100885219B1/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
    • B62D21/08—Understructures, i.e. chassis frame on which a vehicle body may be mounted built up with interlaced cross members
    • 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
    • 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
    • B62D21/05—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members pinched frame type, i.e. formed of at least two longitudinal frame sections connected by other longitudinal frame sections of lesser transverse dimension

Abstract

A structure of the cross member for the vehicles is provided that the number of component which belongs to the cross member by directly connecting the center floor to the connection panel, is reduced. A structure of the cross member for the vehicles comprises a center floor(100) formed across both side frame, a connection panel of which one end is welded into the side frame. The center floor is formed in order to be directly connected to the other end of the connection panel. The groove is formed along the center floor. Plural reinforcement brackets are installed at the groove inner surface. The vibration absorbing part is installed at the central outside of the center floor.

Description

차량용 크로스멤버의 구조{Structure of cross member for vehicle}Structure of cross member for vehicle}

본 발명은 차량용 크로스멤버의 구조에 관한 것으로, 특히 차량의 주행시 노면으로부터 차체로 전달되는 충격을 저감시킬 수 있는 차량용 크로스멤버의 구조에 관한 것이다.The present invention relates to a structure of a vehicle crossmember, and more particularly, to a structure of a vehicle crossmember that can reduce an impact transmitted from a road surface to a vehicle body.

일반적으로 차량의 골격을 이루는 차체에는 양쪽으로 사이드프레임이 배열되고 이 프레임들 사이를 크로스멤버가 가로질러 연결되는 구조를 갖는다.In general, the vehicle body constituting the skeleton of the vehicle has a structure in which side frames are arranged on both sides and crossmembers are connected across the frames.

여기서, 크로스멤버는 주행에 필요한 장비를 설치한 것으로, 자동차가 주행 중에 노면으로부터 받는 충격이나 화물의 하중 등에 의해 발생되는 굽힘, 비틀림, 인장 및 진동 등에 충분히 견딜 수 있는 강도와 강성을 지녀야 하며 가벼워야 한다.Here, the crossmember is installed with equipment necessary for driving, and should have light strength and rigidity that can sufficiently withstand bending, torsion, tension, and vibration caused by impact or load of cargo received from the road while the vehicle is driving. do.

즉, 도 1 및 도 2에 도시된 바와 같이 종래의 크로스멤버(1)는 굽힘, 비틀림, 인장 및 진동 등에 충분히 견딜 수 있도록 센터플로어(10)와, 상기 센터플로어(10)의 양 단부로부터 일단이 연결되는 어퍼크로스멤버(20)와, 상기 어퍼크로스멤버(20)의 타단에 연결패널(30)이 접합되는 구조로 되어있다.That is, as shown in FIGS. 1 and 2, the conventional cross member 1 has a center floor 10 and one end from both ends of the center floor 10 so as to be able to withstand bending, torsion, tension, and vibration sufficiently. The connected upper cross member 20 and the connecting panel 30 are joined to the other end of the upper cross member 20.

이처럼, 종래 크로스멤버(1)는 센터플로어(10), 어퍼크로스멤버(20), 연결패널(30)이 용접 또는 나사체결에 의해 접합되는 것으로, 각각의 강성이 아무리 뛰어나다 하더라도 이들 사이의 접합부 강성은 취약할 수 밖에 없다.As such, the conventional cross member 1 is the center floor 10, the upper cross member 20, the connection panel 30 is joined by welding or screwing, no matter how excellent the rigidity of each of the joints between them Is vulnerable.

특히, 센타플로어(10)의 연장길이가 충분치 않아 차량 중행 중 측면충격에너지가 작용하게 되면 센타플로어(10)와 어퍼크로스멤버(20)의 접합부는 쉽게 붕괴되어 차체 손상 뿐만아니라 운전자 또는 탑승객에도 심각한 치명상을 입힐 우려가 있었다.In particular, if the extension of the center floor 10 is not sufficient and the side impact energy acts while the vehicle is running, the junction between the center floor 10 and the upper cross member 20 is easily collapsed, which may cause serious damage to the driver or passengers as well as the body damage. There was a risk of fatal injury.

본 발명은 전술한 문제점을 해결하기 위해 안출된 것으로서, 본 발명의 목적은 측면충격에너지에 충분히 견딜 수 있도록 성능을 향상시킨 차량용 크로스멤버의 구조를 제공하는데 있다.The present invention has been made to solve the above problems, an object of the present invention is to provide a structure of a cross-member for a vehicle having improved performance to sufficiently endure side impact energy.

본 발명의 다른 목적은 크로스멤버를 구성하는 전체 부품수를 감소시키며 그에 따른 생산비용이 절감되는 차량용 크로스멤버의 구조를 제공하는데 있다.Another object of the present invention is to provide a structure of a vehicle cross member that reduces the total number of parts constituting the cross member and thereby reduces the production cost.

전술한 목적을 달성하기 위해, 본 발명에 따른 차량용 크로스멤버의 구조는, 양 사이드프레임 사이를 가로질러 형성되는 센터플로어와, 일단이 상기 사이드프레임에 접합되는 연결패널을 포함하되, 상기 센터플로어는 연결패널의 타단에 직접 연결되도록 길게 연장 형성되며 그 길이방향을 따라 일면에는 홈이 오목하게 형성되고, 상기 홈 내면에는 복수개의 보강브라켓이 설치되며, 상기 센터플로어의 중앙 외측에는 진동흡수부가 설치되는 것을 특징으로 한다.In order to achieve the above object, the structure of the vehicle cross member according to the present invention includes a center floor formed between both sideframes, and one end is connected to the side frame, the center floor is It is formed to extend long to be connected directly to the other end of the connection panel, the groove is formed in one side along the longitudinal direction concave, a plurality of reinforcing brackets are installed on the inner surface of the groove, the vibration absorbing portion is installed on the center outside of the center floor It is characterized by.

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본 발명에 따르면, 센터플로어를 길이방향을 따라 길게 연장형성한 상태에서 연결패널과 직접 연결되도록 하여 주행시 차체에 전달되는 충격에너지를 안정적으로 유지시켜줌과 동시에 크로스멤버를 구성하는 부품수를 감소시켜 생산비용을 절감시킬 수 있다.According to the present invention, the center floor is extended in the longitudinal direction to be directly connected to the connection panel to keep the impact energy transmitted to the vehicle body stable while driving and at the same time reduce the number of parts constituting the cross member production You can save money.

이하, 첨부된 도 3 및 도 4를 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4.

도시된 바와 같이, 본 발명에 따른 차량용 크로스멤버의 구조(1000)는, 양 사이드프레임(P) 사이를 가로질러 형성되는 센터플로어(100)와, 일단은 상기 양 사이드프레임(P)에 접합되고 타단은 상기 센터플로어(100)의 단부에 접합되는 연결패널(200)로 구성된다.As shown, the structure 1000 of the vehicle crossmember according to the present invention, the center floor 100 is formed between both side frames (P), and one end is joined to both side frames (P) The other end is composed of a connection panel 200 bonded to the end of the center floor (100).

먼저, 상기 센터플로어(100)는 상기 사드프레임(P)에 대해 직각하게 설치되되, 노면의 충격으로부터 충분히 견딜 수 있는 강도와 강성을 지닌 금속판으로 제작되는 것이 바람직하다.First, the center floor 100 is installed at right angles to the sad frame (P), preferably made of a metal plate having strength and rigidity that can sufficiently withstand the impact of the road surface.

특히, 상기 센터플로어(100)는 연결패널(200)의 일단과 직접 연결될 수 있도록 길이방향을 따라 충분히 연장형성되는 것이 바람직하다.In particular, the center floor 100 is preferably extended in the longitudinal direction so as to be directly connected to one end of the connection panel 200.

또한, 상기 센터플로어(100)는 길이방향으로는 홈(110)이 오목하게 형성된다. 즉, 측면에서 바라볼 때, 상부가 개방된 "

Figure 112007089154413-pat00001
"자 형태를 갖는다.In addition, the center floor 100 is recessed in the groove 110 in the longitudinal direction. In other words, when viewed from the side,
Figure 112007089154413-pat00001
"Have a shape.

여기서, 상기 홈(110)은 차량의 주행시 노면으로부터 가해지는 충격이 굴곡된 형태로 진행되도록 한다. 즉, 노면으로부터의 충격의 진동을 차체에 직접 전달하지 않고 굴곡된 파형의 형태로 전달하도록 하여 진동을 저감시킬 수 있도록 하기 위함이다.Here, the groove 110 allows the impact applied from the road surface during the driving of the vehicle to proceed in a curved form. In other words, it is to transmit the vibration of the impact from the road surface to the vehicle body in the form of a curved waveform to reduce the vibration.

아울러, 본 실시예에서는 센터플로어(100)의 홈(110)을 "

Figure 112007089154413-pat00002
" 형태로 하였지만 이에 반드시 한정되는 것이 아니며 "V, U"의 다양한 형태로 적용될 수 있음은 물론이다.In addition, in the present embodiment, the groove 110 of the center floor 100 is "
Figure 112007089154413-pat00002
"Form, but is not necessarily limited to this, of course, can be applied in various forms of" V, U ".

특히, 상기 센터플로어(100)의 홈 내면에는 강도와 강성을 한층 높이기 위한 복수개의 보강브라켓(120)이 설치되는 것이 바람직하다. 이는 센터플로어(100)의 전체적인 강도와 강성을 한층 향상시키게 된다.In particular, it is preferable that a plurality of reinforcing brackets 120 are installed on the inner surface of the groove of the center floor 100 to further increase the strength and rigidity. This further improves the overall strength and rigidity of the center floor 100.

또한, 상기 센터프로어(100) 일측에는 차량의 주행시 노면으로부터 차량의 중량에 따른 진동 또는 소음 등을 완화시키는 진동흡수부(130)가 형성된다.In addition, a vibration absorber 130 is formed at one side of the center proer 100 to mitigate vibration or noise according to the weight of the vehicle from the road surface when the vehicle is driven.

상기 진동흡수부(130)는 4변을 갖는 판재로서, 측면에서 바라볼 경우 굴곡진 원호형상으로, 상기 센터플로어(100)의 길이방향 중앙에 설치되는 것이 바람직하다.The vibration absorbing part 130 is a plate having four sides, and when viewed from the side, it is preferable to be installed in the longitudinal center of the center floor 100 in a curved arc shape.

또한, 상기 진동흡수부(130)에는 길이방향을 따라 관통공(131)이 형성된다.In addition, the vibration absorbing unit 130 is formed with a through hole 131 along the longitudinal direction.

이 경우, 상기 관통공(131)은 상호간에 서로 이격되게 3개가 배치된 것으로, 이는 진동흡수부(130)를 경량화시킴과 동시에 재료를 절감된다.In this case, three through-holes 131 are arranged to be spaced apart from each other, which reduces the weight of the vibration absorbing unit 130 and at the same time saves material.

한편, 연결패널(200)은 전술한 센터플로어(100)와 사이드프레임(P) 사이에 설치되는 것으로, 상기 센터플로어(100)의 단면과 유사한 형상으로 그 일단은 센터플로어(100)에 연결되고 타단은 사이드프레임(P)에 연결되되, 상기 사이드프레임(P)과 보다 안정적인 고정을 위해 바깥쪽으로 접히는 고정플랜지가 형성된다.On the other hand, the connection panel 200 is installed between the above-described center floor 100 and the side frame (P), one end of which is connected to the center floor 100 in a shape similar to the cross section of the center floor 100 The other end is connected to the side frame (P), the fixing flange is formed to be folded outward for more stable fixing with the side frame (P).

이처럼, 본 발명에 따른 차량용 크로스멤버(1000)의 구조는 센터플로어(100)를 길이방향을 따라 길게 연장형성한 상태에서 연결패널(200)과 직접 연결되도록 하여 주행시 차체에 전달되는 충격에너지를 안정적으로 유지시켜줌과 동시에 크로스멤버를 구성하는 부품수를 감소시켜 생산비용을 절감시킬 수 있다.As such, the structure of the vehicle cross member 1000 according to the present invention allows the center floor 100 to be directly connected to the connection panel 200 in a state in which the center floor 100 is elongated in the longitudinal direction to stably transmit the impact energy transmitted to the vehicle body during driving. At the same time, the number of parts constituting the cross member can be reduced to reduce the production cost.

도 1은, 종래기술에 따른 크로스멤버의 결합된 상태를 나타낸 사시도이다.1 is a perspective view showing a combined state of a cross member according to the prior art.

도 2는, 도 1의 분해 사시도이다.2 is an exploded perspective view of FIG. 1.

도 3은, 본 발명에 따른 차량용 크로스멤버의 구조가 결합된 상태를 나타낸 사시도이다.3 is a perspective view showing a state in which the structure of the vehicle cross member according to the present invention is coupled.

도 4는, 도 3의 분해 사시도이다.4 is an exploded perspective view of FIG. 3.

<주요 도면부호의 부호 설명><Description of Signs of Major Reference Symbols>

100... 센터플로어 110... 홈100 ... Center Floor 110 ... Home

120... 보강브라켓 130... 진동흡수부120 ... Reinforcement bracket 130 ... Vibration absorption part

Claims (3)

양 사이드프레임 사이를 가로질러 형성되는 센터플로어와, 일단이 상기 사이드프레임에 접합되는 연결패널을 포함하되,A center floor formed across both side frames, and one end connected to the side frame; 상기 센터플로어는 연결패널의 타단에 직접 연결되도록 길게 연장 형성되며 그 길이방향을 따라 일면에는 홈이 오목하게 형성되고,The center floor is formed to be extended to be connected directly to the other end of the connection panel and a groove is formed in one surface along the longitudinal direction concave, 상기 홈 내면에는 복수개의 보강브라켓이 설치되며, 상기 센터플로어의 중앙 외측에는 진동흡수부가 설치되는 것을 특징으로 하는 차량용 크로스멤버의 구조.A plurality of reinforcing brackets are installed on the inner surface of the groove, and a vibration absorbing part is installed on the center outer side of the center floor. 삭제delete 삭제delete
KR1020070128653A 2007-12-12 2007-12-12 Structure of cross member for vehicle KR100885219B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210050233A (en) 2019-10-28 2021-05-07 주식회사 인 Cross member for medium and large truck applied with weight reduction and assembly simplification technology

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020049542A (en) * 2000-12-19 2002-06-26 류정열 Reinforcement-Pannel for Automobile Front Body

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020049542A (en) * 2000-12-19 2002-06-26 류정열 Reinforcement-Pannel for Automobile Front Body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210050233A (en) 2019-10-28 2021-05-07 주식회사 인 Cross member for medium and large truck applied with weight reduction and assembly simplification technology

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