KR100329057B1 - Side impact-absorbing structure of cross member for vehicle - Google Patents

Side impact-absorbing structure of cross member for vehicle Download PDF

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Publication number
KR100329057B1
KR100329057B1 KR1019970041088A KR19970041088A KR100329057B1 KR 100329057 B1 KR100329057 B1 KR 100329057B1 KR 1019970041088 A KR1019970041088 A KR 1019970041088A KR 19970041088 A KR19970041088 A KR 19970041088A KR 100329057 B1 KR100329057 B1 KR 100329057B1
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South Korea
Prior art keywords
cross member
vehicle
panel
impact
cross
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KR1019970041088A
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Korean (ko)
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KR19990017997A (en
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양세훈
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대우자동차 주식회사
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Priority to KR1019970041088A priority Critical patent/KR100329057B1/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
    • B62D25/2018—Floors or bottom sub-units in connection with other superstructure subunits the subunits being front structures
    • 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
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/157—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body for side impacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002—Type of accident
    • B60R2021/0006—Lateral collision

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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 side impact-absorbing structure of a cross member for a vehicle is provided to secure safety of passengers by making a cross member with strong rigidity absorb the impact force generated in case of a side-on collision of a vehicle. CONSTITUTION: In a vehicle body side structure of a vehicle, a cross member(14) is installed on a front floor panel(10) in the crosswise direction of the vehicle and a floor side panel(16) is melted and compressed at the ends of the cross member. A side inner panel(18) and a side outer panel are melted and compressed at the floor side panel to form a space part. An impact-absorbing member(30) is disposed in the space part, with extended from the ends of the cross member. Plural impact-buffering grooves(34) are recessed on the top of the impact-absorbing member.

Description

자동차 크로스멤버의 측면 충격흡수구조Side shock absorbing structure of car crossmember

본 발명은 자동차 크로스멤버의 측면 충격흡수구조에 관한 것으로, 보다 상세하게는 자동차의 센터필라측에 발생되는 측면 충돌에 대한 강성이 증가되도록 센타필라측 프론트 플로워 패널의 상면에 설치되는 크로스멤버의 양측 단부에 형성되는 자동차 크로스멤버의 측면 충격흡수구조에 관한 것이다.The present invention relates to a side shock absorbing structure of a vehicle cross member, and more particularly, to both sides of the cross member installed on the upper surface of the center pillar side front floor panel so as to increase the rigidity against the side collision occurring on the center pillar side of the vehicle. It relates to a side shock absorbing structure of the vehicle cross member formed at the end.

일반적으로, 첨부 도면 도 1 및 도 2에 도시한 바와 같이 차체를 지지하는 프론트 플로워 패널(10)의 상면 상에는 양쪽 센터필러(12)를 가로지르듯 차폭방향으로 크로스멤버(14)가 설치되고, 상기 크로스멤버(14)의 양단부는 플로워 사이드 패널(16)이 용착되며, 동시에 상기 플로워 사이드 패널(16)에는 사이드 인너 패널 (18)과 사이드 아웃터 패널(20)이 소정 형상의 공간부(22)가 형성되도록 순차적으로 용접 결합되어 하나의 어셈블리를 이룸으로써 차체의 측면구조를 형성하면서 측면 강성을 향상시키도록 하고 있다.Generally, on the upper surface of the front floor panel 10 for supporting the vehicle body as shown in FIGS. 1 and 2, crossmembers 14 are provided in the vehicle width direction as if they cross both center pillars 12. Both sides of the cross member 14 are welded to the floor side panel 16, and at the same time, the side inner panel 18 and the side outer panel 20 are formed with a space 22 having a predetermined shape. Welded to be sequentially formed to form a single assembly to form a side structure of the vehicle body to improve the side rigidity.

그러나, 이와 같은 구조에서는 측면 충돌 발생시에 상기 공간부(22)의 단면이 변형되면서 바디가 함몰되어 탑승자가 상해를 입게 되는 문제점이 있는 것으로, 이와 같은 문제점을 방지하기 위해서 최근에는 공간부(22)의 내부에 설치되는 사이드 인너 패널(18)의 단부를 차폭방향으로 절곡하는 등의 방법을 적용하여 측면 강성이 향상되도록 하고 있으나 그 효과가 미약하다는 단점이 있었다.However, in such a structure, the cross section of the space portion 22 is deformed when the side collision occurs, the body is depressed, and the occupant is injured. In order to prevent such a problem, the space portion 22 has recently been damaged. Although the side rigidity is improved by applying a method such as bending the end portion of the side inner panel 18 installed inside the vehicle width direction, there is a disadvantage in that the effect is weak.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 그 목적은 자동차의 측면 충돌시 발생되는 충격력이 강성이 큰 크로스멤버에 의해 지지 흡수되도록 하므로써 측면 충돌에 대한 승객의 안전이 보장되도록 한 자동차 크로스멤버의 측면 충격흡수구조를 제공하고자 하는 것이다.The present invention is to solve the above problems, the object of the cross-member vehicle is to ensure that the safety of passengers to the side collision by ensuring that the impact force generated during the side impact of the vehicle is supported and absorbed by the rigid cross member To provide a side shock absorbing structure of.

이러한, 목적을 달성하기 위하여, 본 발명은 프론트 플로워 패널의 상면 상에 차폭방향으로 크로스멤버가 설치되고, 상기 크로스멤버의 양단부는 플로워 사이드 패널이 용착되며, 상기 플로워 사이드 패널에 사이드 인너 패널과 사이드 아웃터 패널이 용착되어 소정 형상의 공간부가 형성되도록 된 자동차의 차체 측면구조에 있어서, 상기 공간부의 내부에는 상기 크로스멤버와 동일선상을 이루도록 상기 크로스멤버의 양단부로부터 각각 연장된 형상으로 충격흡수부재가 구성되고, 상기 충격흡수부재의 상부 면상에는 다수 개의 충격완화홈이 요입 형성된 것을 특징으로 한다.In order to achieve the above object, the present invention is a cross member is installed in the vehicle width direction on the upper surface of the front floor panel, both side ends of the cross member is welded to the floor side panel, the side inner panel and side on the floor side panel In the vehicle body side structure in which the outer panel is welded to form a space having a predetermined shape, the shock absorbing member is configured to extend from both ends of the cross member so as to be in line with the cross member. And, on the upper surface of the shock absorbing member is characterized in that a plurality of impact relief grooves are formed in the recess.

도 1은 일반적인 자동차의 차체를 나타내는 개략사시도,1 is a schematic perspective view showing a vehicle body of a typical automobile,

도 2는 종래 자동차의 측면 충격흡수구조를 나타내는 도 1의 A-A선 단면도,2 is a cross-sectional view taken along the line A-A of Figure 1 showing a side shock absorbing structure of a conventional vehicle,

도 3은 본 발명의 일실시예에 따른 자동차 크로스멤버의 측면 충격흡수구조를 나타내는 도 1의 A-A선 부분절개사시도,3 is a partial cutaway perspective view of the A-A line of Figure 1 showing a side shock absorbing structure of the vehicle cross member according to an embodiment of the present invention,

도 4는 본 발명의 일실시예에 따른 자동차 크로스멤버의 측면 충격흡수구조를 나타내는 도 1의 A-A선 단면도,4 is a cross-sectional view taken along the line A-A of Figure 1 showing a side shock absorbing structure of the vehicle cross member according to an embodiment of the present invention;

도 5는 본 발명의 다른 실시예에 따른 자동차 크로스멤버의 측면 충격흡수구조를 나타내는 도 1의 A-A선 부분절개사시도이다.5 is a partial cutaway perspective view taken along the line A-A of Figure 1 showing a side shock absorbing structure of the vehicle cross member according to another embodiment of the present invention.

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

10:프론트 플로워 패널, 14:크로스멤버,10: front floor panel, 14: cross members,

16:플로워 사이드 패널, 18:사이드 인너 패널,16: Floor side panel, 18: Side inner panel,

20:사이드 아웃터 패널, 22:공간부,20: side outer panel, 22: space part,

30:충격흡수부재, 32,32':용착브라켓트,30: shock absorbing member, 32, 32 ': welding bracket,

34,34':충격완화홈.34,34 ': Shock mitigation groove.

이하, 첨부된 도면에 의하여 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

첨부 도면, 도 3은 본 발명의 일실시예에 따른 자동차 크로스멤버의 측면 충격흡수구조를 나타내는 도 1의 A-A선 부분절개사시도이고, 도 4는 본 발명의 일실시예에 따른 자동차 크로스멤버의 측면 충격흡수구조를 나타내는 도 1의 A-A선 단면도로서 종래와 동일한 부분에 대해서는 동일 부호를 부여하여 설명한다.3 is a partial cutaway perspective view of the AA line of Figure 1 showing the side shock absorbing structure of the vehicle cross member according to an embodiment of the present invention, Figure 4 is a side view of the vehicle cross member according to an embodiment of the present invention A cross-sectional view taken along the line AA of FIG. 1 showing the shock absorbing structure will be described with the same reference numerals.

이에 도시한 바와 같이 프론트 플로워 패널(10)의 상면 상에 차폭방향으로 크로스멤버(14)가 설치되고, 상기 크로스멤버(14)의 양단부는 플로워 사이드 패널 (16)이 용착되며, 상기 플로워 사이드 패널(16)에 사이드 인너 패널(18)과 사이드 아웃터 패널(20)이 용착되어 소정 형상의 공간부(22)가 형성되도록 된 자동차의 차체 측면구조에 있어서, 상기 공간부(22)의 내부에 내측 단부가 상기 크로스멤버 (14)와 동일 선상을 이루도록 플로워 사이드 패널(16)에 용착되고 외측 단부가 사이드 인너 패널(18)의 내측면에 용착되어 설치되는 충격흡수부재(30)가 구성된 것이다.As shown in the drawing, a cross member 14 is installed on the upper surface of the front follower panel 10 in the vehicle width direction, and both side ends of the cross member 14 are welded to the floor side panel 16, and the floor side panel is formed. In the vehicle body side structure in which the side inner panel 18 and the side outer panel 20 are welded to 16 so as to form a space portion 22 having a predetermined shape, the inside of the space portion 22 is inward. The shock absorbing member 30 is formed to be welded to the floor side panel 16 so that an end thereof is in line with the cross member 14, and the outer end is welded to an inner surface of the side inner panel 18.

그리고, 상기 충격흡수부재(30)는 그 단면 형상이 대략 상기 크로스멤버(14)의 단면 형상과 유사하게 형성되고, 상기 플로워 사이드 패널(16)과 접하는 내측 단부와 상기 사이드 인너 패널(18)의 내측면에 접하는 외측 단부에 용착브라켓트 (32)가 절곡 형성되며, 그 상면에는 측면 충돌시에 충격이 흡수되도록 다수 개의 충격완화홈(34)이 일정한 간격으로 요입 형성된 것이다.In addition, the shock absorbing member 30 has a cross-sectional shape substantially similar to that of the cross member 14, and has an inner end portion in contact with the follower side panel 16 and the side inner panel 18. The welding bracket 32 is bent at an outer end portion in contact with the inner side, and a plurality of impact alleviating grooves 34 are formed at regular intervals on the upper side thereof so that the impact is absorbed during side impact.

첨부 도면, 도 5는 본 발명의 다른 실시예에 따른 자동차 크로스멤버의 측면 충격흡수구조를 나타내는 도 1의 A-A선 부분절개사시도로서, 이에 도시한 바와 같이 상기 충격흡수부재(30)는 상기 크로스멤버(14)의 양단부로부터 연장 형성되고 외측 단부가 사이드 인너 패널(18)의 내측면에 용착되어 형성된 것이다.5 is a partial cutaway perspective view of the AA line of Figure 1 showing a side shock absorbing structure of the vehicle cross member according to another embodiment of the present invention, as shown in the shock absorbing member 30 is the cross member It extends from both ends of (14), and an outer end is formed by welding to the inner side surface of the side inner panel 18.

그리고, 상기 충격흡수부재(30)는 그 단면 형상이 대략 상기 크로스멤버(14)의 단면 형상과 유사하게 형성되고, 상기 사이드 인너 패널(18)의 내측면에 접하는 외측 단부에 용착브라켓트(32')가 절곡 형성되며, 그 상면에는 측면 충돌시에 충격이 흡수되도록 다수 개의 충격완화홈(34')이 일정한 간격으로 요입 형성된 것이다.In addition, the impact absorbing member 30 has a cross-sectional shape that is substantially similar to the cross-sectional shape of the cross member 14, and a welding bracket 32 'is formed at an outer end of the side inner panel 18 in contact with an inner surface of the side inner panel 18. ) Is bent, the upper surface is formed with a plurality of impact relief grooves 34 'at regular intervals so that the shock is absorbed during side impact.

또한, 상기 플로워 사이드 패널(16) 상에는 상기 크로스멤버(14)에서 연장 형성된 충격흡수부재(30)가 삽입되어 통과되도록 삽입공(36)이 천공된다.In addition, the insertion hole 36 is drilled on the floor side panel 16 so that the shock absorbing member 30 extending from the cross member 14 is inserted therethrough.

상기와 같은 본 발명의 작용은 다음과 같다.The operation of the present invention as described above is as follows.

도 3 및 도 4에 도시한 바와 같이, 크로스멤버(14)와 동일 선상에 충격흡수부재(30)가 구성된 자동차에 측면 충돌이 발생되어 사이드 아웃터 패널(20) 상에 작은 충격력이 인가되면 그 내측의 충격흡수부재(30)에 의해 지지되어 변형이 방지되고, 큰 충격력이 인가되면 강성이 큰 크로스멤버(14)를 포함하는 충격흡수부재 (30)에 의해 지지됨과 동시에 충격완화홈(34)부가 차례대로 변형되면서 충격을 흡수하게 되는 것이다.As shown in FIGS. 3 and 4, when a side impact is generated in a vehicle in which the shock absorbing member 30 is arranged on the same line as the cross member 14, a small impact force is applied to the side outer panel 20. It is supported by the shock absorbing member 30 of the deformation is prevented, when a large impact force is applied is supported by the shock absorbing member 30 including a cross member 14 having a large rigidity and at the same time the impact relief groove 34 Deformation in turn will absorb the shock.

상기와 같은 본 발명에 따른 자동차 크로스멤버의 측면 충격흡수구조에 의하면, 플로워 사이드 패널과 사이드 아웃터 패널 사이의 공간부에 강성이 큰 크로스멤버에 지지되는 충격흡수부재가 구성되므로서 측면 충돌에 대한 탑승자의 안전이 보다 향상되는 효과가 있는 것이다.According to the side impact absorbing structure of the vehicle cross member according to the present invention as described above, the impact absorbing member which is supported on the cross member having a large rigidity in the space portion between the floor side panel and the side outer panel, the occupant against the side collision The safety of the effect is to be improved more.

Claims (1)

프론트 플로워 패널의 상면 상에 차폭방향으로 크로스멤버가 설치되고, 상기 크로스멤버의 양단부는 플로워 사이드 패널이 용착되며, 상기 플로워 사이드 패널에 사이드 인너 패널과 사이드 아웃터 패널이 용착되어 소정 형상의 공간부가 형성되도록 된 자동차의 차체 측면구조에 있어서,Cross members are installed on the upper surface of the front floor panel in the vehicle width direction, and floor side panels are welded at both ends of the cross member, and side inner panels and side outer panels are welded to the floor side panels to form a space having a predetermined shape. In the body side structure of the automobile, 상기 공간부(22)의 내부에는 상기 크로스멤버(14)와 동일선상을 이루도록 상기 크로스멤버(14)의 양단부로부터 각각 연장된 형상으로 충격흡수부재(30)가 구성되고, 상기 충격흡수부재(30)의 상부 면상에는 다수 개의 충격완화홈(34)(34')이 요입 형성된 것을 특징으로 하는 자동차 크로스멤버의 측면 충격흡수구조.The shock absorbing member 30 is formed in the space 22 so as to extend from both ends of the cross member 14 to form the same line as the cross member 14, and the shock absorbing member 30 is formed. Side impact absorption structure of the cross-member of the vehicle, characterized in that a plurality of impact relief grooves 34, 34 'is formed on the upper surface of the recess.
KR1019970041088A 1997-08-26 1997-08-26 Side impact-absorbing structure of cross member for vehicle KR100329057B1 (en)

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