KR102145485B1 - Front Bumper and Front Side Member Module - Google Patents

Front Bumper and Front Side Member Module Download PDF

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Publication number
KR102145485B1
KR102145485B1 KR1020180169264A KR20180169264A KR102145485B1 KR 102145485 B1 KR102145485 B1 KR 102145485B1 KR 1020180169264 A KR1020180169264 A KR 1020180169264A KR 20180169264 A KR20180169264 A KR 20180169264A KR 102145485 B1 KR102145485 B1 KR 102145485B1
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South Korea
Prior art keywords
front bumper
side member
crush box
front side
bumper
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KR1020180169264A
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Korean (ko)
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KR20200080459A (en
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이병룡
김정섭
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서진산업 주식회사
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Priority to KR1020180169264A priority Critical patent/KR102145485B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • 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
    • B62D21/152—Front or rear frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1833—Structural beams therefor, e.g. shock-absorbing made of plastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1886—Bumper fascias and fastening means therefor

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

Abstract

본 발명은 프런트범퍼 및 프런트사이드멤버 모듈에 관한 것으로써, 프런트범퍼는 초고강도강에 GMT재질을 사출하여 제작하고, 프런트사이드멤버는 초고강도강으로 제작하고, 프런트범퍼와 크러시박스를 셀프피어싱리벳 또는 플로우드릴스크류로 결합하여, 차체의 강성을 유지하면서도 차체를 경량화하고, 작업성을 향상시킨 프런트범퍼 및 프런트사이드멤버 모듈에 관한 것이다.The present invention relates to a front bumper and a front side member module, wherein the front bumper is manufactured by injecting GMT material into an ultra-high strength steel, and the front side member is made of ultra-high strength steel, and the front bumper and the crush box are self-piercing rivets. Alternatively, it relates to a front bumper and a front side member module that is combined with a flow drill screw to reduce the weight of the vehicle body while maintaining the rigidity of the vehicle body and improve workability.

Description

프런트범퍼 및 프런트사이드멤버 모듈{Front Bumper and Front Side Member Module}Front Bumper and Front Side Member Module

본 발명은 프런트범퍼 및 프런트사이드멤버 모듈에 관한 것으로, 특히 프런트범퍼 및 프런트사이드멤버 모듈을 경량화시키면서도 강성을 유지할 수 있는 프런트범퍼 및 프런트사이드멤버 모듈에 관한 것이다.The present invention relates to a front bumper and a front side member module, and more particularly, to a front bumper and a front side member module capable of maintaining rigidity while reducing the weight of the front bumper and front side member modules.

일반적으로 차체의 프런트범퍼 및 프런트사이드멤버는 전방충돌시, 그 충격을 흡수하는 완충 수단이다.In general, the front bumper and the front side member of a vehicle body are a shock absorbing means for absorbing the impact during a front collision.

프런트범퍼와 프런트사이드멤버는 크러시박스를 통해 서로 연결된다.The front bumper and front side member are connected to each other through a crush box.

이러한 종래의 프런트범퍼 및 프런트사이드멤버 모듈이 '한국공개특허공보 제10-2014-0148066호'에 제시되어 있다.Such a conventional front bumper and front side member module is presented in'Korean Patent Publication No. 10-2014-0148066'.

이러한 종래의 프런트범퍼 및 프런트사이드멤버 모듈은 통상 스틸재질로 제작되어 차체의 하중이 높아진다는 문제점이 있다.These conventional front bumper and front side member modules are generally made of steel, so that there is a problem in that the load of the vehicle body is increased.

또한, 프런트범퍼와 크러시박스를 볼팅결합할 때 너트를 프런트범퍼 내부에 넣어 볼트와 체결하여야 하므로 조립이 어렵다는 단점이 있다.In addition, when bolting the front bumper and the crush box, there is a disadvantage in that it is difficult to assemble because a nut must be inserted into the front bumper and fastened with the bolt.

한국등록특허공보 제10-2014-0148066호Korean Patent Publication No. 10-2014-0148066

본 발명은 전술한 문제점을 해결하기 위하여 안출된 것으로, 프런트범퍼를 이종소재로 제작하고 프런트사이드멤버를 고강도강으로 제작하여 차체를 경량화시키고, 재질이 서로 다른 프런트범퍼와 크러시박스를 너트 없이 결합할 수 있는 프런트범퍼 및 프런트사이드멤버 모듈을 제공하는 데 그 목적이 있다.The present invention has been conceived to solve the above-described problem, and the front bumper is made of different materials and the front side member is made of high-strength steel to reduce the weight of the vehicle body, and the front bumper and crush box of different materials can be combined without a nut. Its purpose is to provide a front bumper and front side member module that can be used.

전술한 목적을 달성하기 위한 본 발명의 프런트범퍼는 스틸재질로 프레스성형되는 내부프런트범퍼와, 상기 내부프런트범퍼 외측에 플라스틱 수지로 인서트 사출성형되는 외부프런트범퍼로 이루어져 차량의 폭방향으로 길게 형성되는 것을 특징으로 한다.The front bumper of the present invention for achieving the above object comprises an inner front bumper that is press-molded from a steel material, and an outer front bumper that is insert injection molded with a plastic resin outside the inner front bumper and is formed to be elongated in the width direction of the vehicle. It features.

상기 프런트범퍼는 상기 프런트범퍼의 양측 후방에 결합되는 스틸재질의 제1크러시박스를 더 포함하고, 상기 제1크러시박스는 상기 프런트범퍼의 상면 일부 및 하면 일부를 감쌀 수 있는 연장부를 포함하고, 상기 제1크러시박스는 상기 연장부와 상기 프런트범퍼가 접촉하는 부분에 셀프피어싱리벳 또는 플로우드릴스크류 중 하나에 의해 결합되는 것을 특징으로 할 수 있다.The front bumper further includes a first crush box made of a steel material coupled to the rear of both sides of the front bumper, and the first crush box includes an extension part that can wrap part of an upper surface and a lower surface of the front bumper, and the The first crush box may be coupled to a portion where the extension portion and the front bumper contact each other by one of a self-piercing rivet or a flow drill screw.

상기 내부프런트범퍼의 스틸재질은 두께 1.2mm의 780급의 초고강도강이고, 상기 외부프런트범퍼의 플라스틱 수지는 3.0mm로 성형되는 GMT이고, 상기 제1크러시박스의 스틸재질은 두께 2.0mm의 590급 고강도강인 것을 특징으로 할 수 있다.The steel material of the inner front bumper is 780 class ultra-high strength steel with a thickness of 1.2 mm, the plastic resin of the outer front bumper is GMT molded into 3.0 mm, and the steel material of the first crush box is 590 with a thickness of 2.0 mm. It can be characterized by being a grade high strength steel.

전술한 목적을 달성하기 위한 본 발명의 프런트사이드멤버는 스틸재질로 프레스성형되는 내측프런트사이드멤버와, 상기 내측프런트사이드멤버에 차량의 폭방향으로 외측에 배치되고 스틸재질로 프레스성형되는 외측프런트사이드멤버로 이루어져 차량의 길이방향으로 길게 한 쌍으로 형성되는 것을 특징으로 한다.The front side member of the present invention for achieving the above object includes an inner front side member that is press-molded from a steel material, and an outer front side that is disposed on the outside in the width direction of the vehicle on the inner front side member and is press-formed from a steel material. It consists of members and is characterized in that it is formed in a pair of lengths in the longitudinal direction of the vehicle.

상기 내측프런트사이드멤버 및 상기 외측프런트사이드멤버의 스틸재질은 780급의 초고도강 단판이고, 상기 내측프런트사이드멤버 및 상기 외측프런트사이드멤버의 단면은 'ㄷ'자 형태로 형성되고, 상기 내측프런트사이드멤버와 상기 외측프런트사이드멤버를 결합하면 'ㅁ'자 형태의 폐단면이 형성되는 것을 특징으로 할 수 있다.The steel material of the inner front side member and the outer front side member is a 780 class ultra-high-grade steel veneer, the inner front side member and the outer front side member have a'U' shape in cross section, and the inner front side When the member and the outer front side member are combined, a closed cross-section in the form of a'ㅁ' may be formed.

상기 프런트사이드멤버는 상기 프런트사이드멤버의 전방에 용접되는 스틸재질의 제2크러시박스를 더 포함하는 것을 특징으로 할 수 있다.The front side member may further include a second crush box made of steel to be welded in front of the front side member.

상기 프런트사이드멤버의 스틸재질은 두께 1.4mm의 780급의 초고강도강이고, 상기 제2크러시박스의 스틸재질은 두께 2.0mm의 590급 고강도강이고, 상기 내측프런트사이드멤버와 상기 외측프런트사이드멤버는 각각 단판으로 성형 후, CO2용접으로 결합되는 것을 특징으로 할 수 있다.The steel material of the front side member is 780 class high strength steel with a thickness of 1.4 mm, the steel material of the second crush box is 590 class high strength steel with a thickness of 2.0 mm, the inner front side member and the outer front side member Each can be characterized in that after molding into a single plate, bonded by CO 2 welding.

전술한 목적을 달성하기 위한 본 발명의 프런트범퍼 및 프런트사이드멤버 모듈은 스틸재질로 프레스성형되는 내부프런트범퍼와, 상기 내부프런트범퍼 외측에 플라스틱 수지로 인서트 사출성형되는 외부프런트범퍼로 이루어져 차량의 폭방향으로 길게 형성되는 프런트범퍼와, 스틸재질로 프레스성형되는 내측프런트사이드멤버와, 상기 내측프런트사이드멤버에 차량의 폭방향으로 외측에 배치되고 스틸재질로 프레스성형되는 외측프런트사이드멤버로 이루어져 차량의 길이방향으로 길게 형성되는 한 쌍의 프런트사이드멤버와, 상기 프런트범퍼는 상기 프런트범퍼의 양측 후방에 결합되는 스틸재질의 제1크러시박스 및 상기 프런트사이드멤버는 상기 프런트사이드멤버의 전방에 용접되는 스틸재질의 제2크러시박스를 포함하고, 상기 제1크러시박스는 상기 프런트범퍼의 상면 일부 및 하면 일부를 감쌀 수 있는 연장부를 포함하고, 상기 제1크러시박스는 상기 연장부와 상기 프런트범퍼가 접촉하는 부분에 셀프피어싱리벳 또는 플로우드릴스크류 중 하나에 의해 결합되고, 상기 제1크러시박스와 상기 제2크러시박스는 서로 볼팅체결되는 것을 특징으로 한다.The front bumper and front side member module of the present invention for achieving the above object is composed of an inner front bumper that is press-molded from a steel material and an outer front bumper that is insert injection molded with plastic resin outside the inner front bumper. It consists of a front bumper that is elongated in the direction, an inner front side member that is press-formed from steel, and an outer front side member that is disposed outside the inner front side member in the width direction of the vehicle and is press-molded from a steel material. A pair of front side members that are elongated in the longitudinal direction, the front bumper is a first crush box made of steel coupled to the rear of both sides of the front bumper, and the front side member is steel welded to the front of the front side member. Including a second crush box made of material, the first crush box includes an extension portion that can wrap a portion of the upper and lower surfaces of the front bumper, and the first crush box is in contact with the extension portion and the front bumper. It is coupled to the portion by either a self-piercing rivet or a flow drill screw, and the first crush box and the second crush box are bolted to each other.

본 발명의 프런트범퍼 및 프런트사이드멤버 모듈에 따르면 다음과 같은 효과가 있다.The front bumper and front side member module of the present invention has the following effects.

프런트범퍼를 초고강도강에 GMT를 사출하여 제작함으로써, 스틸로만 제작한 프런트범퍼와 비교했을 때, 전체적인 두께 같으면서도 강성은 유지되고 초고강도강의 두께를 줄일 수 있어 모듈을 경량화할 수 있다.By injecting the front bumper into ultra-high strength steel by injecting GMT, compared to the front bumper made only of steel, the overall thickness is the same, but the rigidity is maintained and the thickness of the ultra-high strength steel can be reduced, thereby reducing the module weight.

프런트범퍼와 크러시박스를 셀프피어싱리벳 또는 플로우드릴스크류를 사용하여 결합함으로써, 프런트범퍼와 크러시박스의 재질이 서로 달라도 결합이 가능하고, 셀프피어싱리벳 또는 플로우드릴스크류가 삽입되는 반대방향으로 너트를 결합할 필요가 없어 조립이 용이해지고, 프런트범퍼 및 크러시박스에 미리 구멍을 뚫을 필요가 없어 조립과정이 단순해진다.By combining the front bumper and the crush box using self-piercing rivets or flow drill screws, they can be combined even if the materials of the front bumper and crush box are different, and the nuts are combined in the opposite direction where the self-piercing rivets or flow drill screws are inserted. There is no need to assemble, and the assembly process is simplified because there is no need to drill holes in the front bumper and crush box in advance.

프런트범퍼와 크러시박스 사이의 결합부가 프런트범퍼의 후면이 아닌 상면 및 하면에 형성되게 함으로써, 크러시박스의 내부가 아닌 크러시박스의 외부에서 상기 결합부를 형성할 수 있어 조립성이 개선된다.Since the coupling part between the front bumper and the crush box is formed on the upper and lower surfaces of the front bumper rather than the rear surface, the coupling part can be formed outside the crush box rather than the inside of the crush box, thereby improving the assembling property.

프런트사이드멤버를 단판으로 성형함으로써, TWB공법 적용시 필요한 용접 공정이 불필요하므로 성형 과정이 간소화된다.By forming the front side member into a single plate, the welding process required when applying the TWB method is unnecessary, thus simplifying the forming process.

도 1은 본 발명의 바람직한 실시예에 따른 프런트범퍼 및 프런트사이드멤버 모듈의 정면 사시도.
도 2는 본 발명의 바람직한 실시예에 따른 프런트범퍼 및 프런트사이드멤버 모듈의 정면 분해 사시도.1 is a front perspective view of a front bumper and a front side member module according to a preferred embodiment of the present invention.
2 is a front exploded perspective view of a front bumper and a front side member module according to a preferred embodiment of the present invention.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

여기서 사용되는 전문용어는 단지 특정 실시예를 언급하기 위한 것이며, 본 발명을 한정하는 것은 의도하지 않는다. 여기서 사용되는 단수 형태들은 문구들이 이와 명백히 반대의 의미를 나타내지 않는 한 복수 형태들도 포함한다.The terminology used herein is for referring only to specific embodiments, and is not intended to limit the present invention. Singular forms as used herein also include plural forms unless the phrases clearly indicate the opposite.

명세서에 사용되는 "포함하는"의 의미는 특정 특성, 영역, 정수, 단계, 동작, 요소 및/또는 성분을 구체화하며, 다른 특정 특성, 영역, 정수, 단계, 동작, 요소 및/또는 군의 존재나 부가를 제외시키는 것은 아니다.The meaning of “comprising” as used in the specification specifies a particular characteristic, region, integer, step, action, element and/or component, and the presence of another specific characteristic, region, integer, step, action, element and/or group I am not excluding wealth.

본 발명의 바람직한 실시예에서 전후방향은 자동차의 길이방향이고, 좌우방향은 자동차의 폭방향이고, 상하방향은 자동차의 상하방향이다.In a preferred embodiment of the present invention, the front-rear direction is the longitudinal direction of the vehicle, the left-right direction is the width direction of the vehicle, and the vertical direction is the vertical direction of the vehicle.

도 1 내지 도 2에 도시된 바와 같이, 본 발명의 바람직한 실시예에 따른 프런트범퍼 및 프런트사이드멤버 모듈은 프런트범퍼(100)와, 프런트사이드멤버(200)와, 프런트범퍼(100)의 좌우양측 후방에 결합되는 제1크러시박스(150)와, 프런트사이드멤버(200)의 전방에 결합되고 제1크러시박스(150)와 결합되는 제2크러시박스(250)를 포함한다.1 to 2, the front bumper and front side member module according to a preferred embodiment of the present invention includes the front bumper 100, the front side member 200, and the left and right sides of the front bumper 100. It includes a first crush box 150 coupled to the rear, and a second crush box 250 coupled to the front of the front side member 200 and coupled to the first crush box 150.

프런트범퍼(100)는 차량의 폭방향을 따라 좌우방향으로 길게 형성된다.The front bumper 100 is formed long in the left and right directions along the width direction of the vehicle.

프런트범퍼(100)는 좌우양측이 후방으로 휘어진 형태로 형성된다.The front bumper 100 is formed in a shape in which both left and right sides are curved rearward.

프런트범퍼(100)의 내부에는 좌우방향으로 관통된 공간이 형성된다.A space penetrated in the left and right directions is formed inside the front bumper 100.

프런트범퍼(100)는 내부프런트범퍼와, 상기 내부프런트범퍼의 외측에 인서트성형되는 외부프런트범퍼로 이루어진다.The front bumper 100 includes an inner front bumper and an outer front bumper that is insert-molded on the outside of the inner front bumper.

프런트범퍼(100)는 이종소재로 제작된다.The front bumper 100 is made of different materials.

프런트범퍼(100)의 내부프런트범퍼는 스틸재질로 제작되고, 프런트범퍼(100)의 외부프런트범퍼는 플라스틱 수지로 제작된다. 이로 인해 스틸재질 단독으로 제작했을 때와 같은 두께로 프런트범퍼(100)를 제작했을 때, 같은 강성을 유지하면서도 스틸재질의 두께를 줄일 수 있다. 또한, 스틸재질의 비중보다 GMT의 비중이 훨씬 낮기 때문에 모듈이 경량화 된다.The inner front bumper of the front bumper 100 is made of steel, and the outer front bumper of the front bumper 100 is made of plastic resin. Accordingly, when the front bumper 100 is manufactured to have the same thickness as when the steel material is manufactured alone, the thickness of the steel material can be reduced while maintaining the same rigidity. In addition, because the specific gravity of GMT is much lower than that of the steel material, the module is lightened.

프런트범퍼(100)의 내부프런트범퍼의 스틸재질은 780급의 초고강도강이고, 두께가 1.2mm인 것이 바람직하다.The steel material of the inner front bumper of the front bumper 100 is 780 grade super high strength steel, and it is preferable that the thickness is 1.2mm.

프런트범퍼(100)의 외부프런트범퍼의 플라스틱 수지는 GMT(Glass Fiber Reinforced Thermoplastics)재질이고, 두께 3.0mm로 성형되는 것이 바람직하다.The plastic resin of the outer front bumper of the front bumper 100 is a GMT (Glass Fiber Reinforced Thermoplastics) material, and is preferably formed to have a thickness of 3.0 mm.

프런트범퍼(100)의 내부프런트범퍼는 프레스성형된다.The inner front bumper of the front bumper 100 is press-molded.

프런트범퍼(100)의 외부프런트범퍼는 프런트범퍼(100)의 내부프런트범퍼 외면에 사출성형된다. 즉, 프런트범퍼(100)의 내부프런트범퍼는 프런트범퍼(100)의 외부프런트범퍼에 의해 덮인다.The outer front bumper of the front bumper 100 is injection-molded on the outer surface of the inner front bumper of the front bumper 100. That is, the inner front bumper of the front bumper 100 is covered by the outer front bumper of the front bumper 100.

프런트사이드멤버(200)는 차량의 길이방향을 따라 전후방향으로 길게 형성된다.The front side member 200 is formed to be elongated in the front-rear direction along the longitudinal direction of the vehicle.

프런트사이드멤버(200)는 전후방향 및 상하방향으로 연장되어 형성되는 중심면을 기준으로 좌측과 우측에 각각 대칭되게 쌍으로 형성된다.The front side members 200 are formed in pairs to be symmetrical to the left and the right, respectively, with respect to the center plane formed by extending in the front-rear direction and the vertical direction.

프런트사이드멤버(200)는 후방이 아래쪽으로 휘어진 형태로 형성된다.The front side member 200 is formed in a shape in which the rear is curved downward.

프런트사이드멤버(200)의 내부에는 전후방향으로 관통된 공간이 형성된다.A space penetrated in the front-rear direction is formed inside the front side member 200.

프런트사이드멤버(200)는 좌측에 형성되는 프런트사이드멤버(200)를 기준으로, 우측에 형성되는 내측프런트사이드멤버와, 상기 내측프런트사이드멤버의 좌측에 형성되는 외측프런트사이드멤버로 이루어진다.The front side member 200 includes an inner front side member formed on the right side and an outer front side member formed on the left side of the inner front side member based on the front side member 200 formed on the left side.

우측에 형성되는 프런트사이드멤버(200)는 상기 중심면을 기준으로 대칭되게 형성된다.The front side member 200 formed on the right side is formed symmetrically with respect to the center plane.

프런트사이드멤버(200)는 스틸재질로 제작된다.The front side member 200 is made of a steel material.

프런트사이드멤버(200)의 스틸재질은 780급의 초고강도강이고, 두께는 1.4mm인 것이 바람직하다.The steel material of the front side member 200 is 780 grade ultra-high strength steel, and the thickness is preferably 1.4mm.

*상기 스틸재질로 인해 프런트사이드멤버(200)의 내측프런트사이드멤버 및 외측프런트사이드멤버는 각각 단판으로 프레스 성형되어 제작될 수 있다. 이로 인해 TWB공법 적용시 필요한 용접 공정이 불필요해져 성형 과정이 간소화된다.* Due to the steel material, the inner front side member and the outer front side member of the front side member 200 may be manufactured by press molding into a single plate, respectively. This makes the welding process necessary when applying the TWB method unnecessary, simplifying the molding process.

프런트사이드멤버(200)의 내측프런트사이드멤버 및 외측프런트사이드멤버의 횡단면은 'ㄷ'자 형태로 형성된다.The cross-sections of the inner front side member and the outer front side member of the front side member 200 are formed in a'U' shape.

프런트사이드멤버(200)의 내측프런트사이드멤버와 프런트사이드멤버(200)의 외측프런트사이드멤버는 CO2 용접으로 결합되는 것이 바람직하다. 결합후 프런트사이드멤버(200)의 내측프런트사이드멤버와 프런트사이드멤버(200)의 외측프런트사이드멤버에 의해 'ㅁ'자 형태의 폐단면이 형성된다.It is preferable that the inner front side member of the front side member 200 and the outer front side member of the front side member 200 are coupled by CO2 welding. After bonding, a closed cross section in the shape of a'ㅁ' is formed by the inner front side member of the front side member 200 and the outer front side member of the front side member 200.

제1크러시박스(150)는 스틸재질로 제작된다.The first crush box 150 is made of a steel material.

제1크러시박스(150)의 스틸재질은 590급의 고강도강이고, 두께는 2.0mm인 것이 바람직하다. The steel material of the first crush box 150 is 590 grade high strength steel, and it is preferable that the thickness is 2.0mm.

제1크러시박스(150)는 차량의 길이방향을 따라 형성된다.The first crush box 150 is formed along the longitudinal direction of the vehicle.

제1크러시박스(150)의 내부에는 전후방향으로 관통된 공간이 형성된다.A space penetrated in the front-rear direction is formed inside the first crush box 150.

제1크러시박스(150)는 제1크러시박스(150)의 상측 및 하측의 전방으로 돌출되게 형성되는 연장부(151)를 포함한다.The first crush box 150 includes an extension part 151 formed to protrude forwardly from the upper side and the lower side of the first crush box 150.

연장부(151)의 내측 폭은 프런트범퍼(100)의 높이와 유사하거나 보다 크게 형성된다. 이로 인해 제1크러시박스(150)는 각각의 연장부(151)가 프런트범퍼(100)의 상면 및 하면에 접하게 프런트범퍼(100)의 후방에 끼워질 수 있다.The inner width of the extension part 151 is similar to or greater than the height of the front bumper 100. Accordingly, the first crush box 150 may be fitted to the rear of the front bumper 100 so that the respective extension portions 151 are in contact with the upper and lower surfaces of the front bumper 100.

프런트범퍼(100)와 연장부(151)가 맞닿는 접촉부(101) 위쪽에서 셀프피어싱리벳 또는 플로우드릴스크류를 사용하여, 프런트범퍼(100)에 제1크러시박스(150)를 결합할 수 있다.The first crush box 150 may be coupled to the front bumper 100 by using a self-piercing rivet or a flow drill screw above the contact part 101 where the front bumper 100 and the extension part 151 abut.

그로 인해 프런트범퍼(100) 및 제1크러시박스(150)에 미리 천공을 하지 않아도 결합이 가능해지므로 제작 공정이 단순화된다.As a result, the front bumper 100 and the first crush box 150 can be combined without drilling in advance, thereby simplifying the manufacturing process.

셀프피어싱리벳 또는 플로우드릴스크류는 외측에서부터 스틸재질의 제1크러시박스(150), 플라스틱재질의 프런트범퍼(100) 및 스틸재질의 프런트범퍼(100)와 차례대로 결합한다.The self-piercing rivet or flow drill screw is sequentially combined with the first crush box 150 made of steel, the front bumper 100 made of plastic, and the front bumper 100 made of steel from the outside.

셀프피어싱리벳 또는 플로우드릴스크류는 셀프피어싱리벳 또는 플로우드릴스크류가 삽입되는 반대방향으로 너트를 추가로 결합할 필요가 없어 작업이 보다 용이해질 수 있다.The self-piercing rivet or flow drill screw does not require additional coupling of the nut in the opposite direction into which the self-piercing rivet or flow drill screw is inserted, making the operation easier.

제1크러시박스(150)의 후방은 상부 및 하부로 연장되게 형성된다.The rear of the first crush box 150 is formed to extend upward and downward.

제1크러시박스(150)의 후방의 상부 및 하부에는 전후방향으로 관통되게 볼트체결공이 형성된다.Bolt fastening holes are formed in the upper and lower portions of the rear of the first crush box 150 to penetrate in the front and rear directions.

제2크러시박스(250)는 스틸재질로 제작되는 것이 바람직하다.It is preferable that the second crush box 250 is made of a steel material.

제2크러시박스(250)의 스틸재질은 590급의 고강도강인 것이 바람직하다. The steel material of the second crush box 250 is preferably 590 grade high strength steel.

제2크러시박스(250)는 넓은 면이 전후방향을 향하게 배치되는 사각판의 형상으로 형성된다.The second crush box 250 is formed in the shape of a square plate with a wide surface facing the front-rear direction.

제2크러시박스(250)의 중앙부는 전후방향으로 관통되게 형성된다. 이로 인해 제2크러시박스(250)의 중앙부는 프런트사이드멤버(200)의 내부공간과 연통된다.The central portion of the second crush box 250 is formed to penetrate in the front-rear direction. Accordingly, the central portion of the second crush box 250 communicates with the inner space of the front side member 200.

제2크러시박스(250)의 가로 및 세로 길이는, 제2크러시박스(250)와 결합되는 부위의 프런트사이드멤버(200)의 가로 및 세로 길이보다 크게 형성된다.The horizontal and vertical lengths of the second crush box 250 are formed to be larger than the horizontal and vertical lengths of the front side member 200 at a portion coupled to the second crush box 250.

제2크러시박스(250)의 상부 및 하부에는 전후방향으로 관통되게 볼트체결공이 형성된다. 제2크러시박스(250)의 볼트체결공은 제1크러시박스(150)의 볼트체결공과 연통된다.Bolt fastening holes are formed in the upper and lower portions of the second crush box 250 to penetrate in the front and rear directions. The bolt fastening hole of the second crush box 250 is in communication with the bolt fastening hole of the first crush box 150.

제2크러시박스(250)는 프런트사이드멤버(200)의 전방에 용접되어 결합된다.The second crush box 250 is welded to and coupled to the front side of the front side member 200.

제1크러시박스(150)와 제2크러시박스(250)는 볼트체결된다.The first crush box 150 and the second crush box 250 are bolted together.

상술한 바와 같이, 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당 기술분야의 당업자는 하기의 특허 청구 범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 또는 변형하여 실시할 수 있다.As described above, although it has been described with reference to a preferred embodiment of the present invention, those skilled in the art may variously modify or modify the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. It can be done.

100: 프런트범퍼
101: 접촉부
150: 제1크러시박스
151: 연장부
200: 프런트사이드멤버
250: 제2크러시박스100: front bumper
101: contact
150: first crush box
151: extension
200: Frontside member
250: second crush box

Claims (8)

차량의 폭방향으로 길게 형성되고, 양측이 후방으로 휘어지게 형성되는 프런트범퍼;
상기 프런트범퍼의 양측 후방에 결합되며, 상기 프런트 범퍼와 다른 재질로 형성되는 제1크러시박스;
상기 제1크러시박스에 결합되는 제2크러시박스; 및
차량이 길이방향으로 길게 형성되고, 전방은 상기 제2크러시박스에 용접되고, 후방은 아래쪽으로 휘어지게 형성되는 프런트사이드멤버;를 포함하고,
상기 프런트범퍼는 스틸재질로 형성되는 내부프런트범퍼와, 상기 내부프런트범퍼가 덮이도록 상기 내부프런트범퍼의 외면에 플라스틱 수지로 인서트 사출성형되는 외부프런트범퍼를 포함하고,
상기 프런트사이드멤버는 단면이 'ㄷ'자 형태로 형성되는 내측프런트사이드멤버와, 단면이 'ㄷ'자 형태로 형성되어 상기 내측프런트사이드멤버와 결합하면 'ㅁ'자 형태의 폐단면을 형성하는 외측프런트사이드멤버를 포함하고,
상기 제1크러시박스의 일측에는 상기 프런트범퍼의 상면 일부 및 하면 일부를 감쌀 수 있는 연장부가 형성되고, 상기 제1크러시박스는 상기 프런트범퍼의 양단에서 이격된 부위에 셀프피어싱리벳 또는 플로우드릴스크류 중 하나에 의해 결합되고, 상기 제1크러시박스의 타측은 상부 및 하부로 연장되게 형성되고,
상기 제2크러시박스는 상기 제1크러시박스 타측의 연장된 부분과 볼팅 결합되고, 프론트범퍼의 단부까지 연장되게 형성되는, 프런트범퍼 및 프런트사이드멤버 모듈.A front bumper that is formed to be elongated in the width direction of the vehicle and has both sides curved to the rear;
A first crush box coupled to the rear of both sides of the front bumper and formed of a material different from that of the front bumper;
A second crush box coupled to the first crush box; And
Including; a front side member formed such that the vehicle is elongated in the longitudinal direction, the front is welded to the second crush box, and the rear is curved downward,
The front bumper includes an inner front bumper formed of a steel material, and an outer front bumper insert injection-molded with a plastic resin on an outer surface of the inner front bumper to cover the inner front bumper,
The front side member has an inner front side member whose cross section is formed in a'C' shape, and the cross section is formed in a'U' shape, and when combined with the inner front side member, forms a closed cross section in the shape of'ㅁ' Including an outer front side member,
One side of the first crush box is formed with an extension that can wrap a part of the upper and lower surfaces of the front bumper, and the first crush box is a self-piercing rivet or flow drill screw at a portion spaced apart from both ends of the front bumper. It is combined by one, and the other side of the first crush box is formed to extend upward and downward,
The second crush box is bolted to an extended portion of the other side of the first crush box, and is formed to extend to an end of the front bumper, a front bumper and a front side member module. 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
KR1020180169264A 2018-12-26 2018-12-26 Front Bumper and Front Side Member Module KR102145485B1 (en)

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JP2018075909A (en) * 2016-11-08 2018-05-17 マツダ株式会社 Vehicle impact absorption structure

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