KR20040049393A - Structure of rear bumper using bumper rail and bumper tower - Google Patents
Structure of rear bumper using bumper rail and bumper tower Download PDFInfo
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- KR20040049393A KR20040049393A KR1020020076789A KR20020076789A KR20040049393A KR 20040049393 A KR20040049393 A KR 20040049393A KR 1020020076789 A KR1020020076789 A KR 1020020076789A KR 20020076789 A KR20020076789 A KR 20020076789A KR 20040049393 A KR20040049393 A KR 20040049393A
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- Prior art keywords
- bumper
- rail
- tower
- shock absorbing
- absorbing member
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Classifications
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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
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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
- B60R19/18—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
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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
- B60R19/18—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
- B60R19/22—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 containing mainly cellular material, e.g. solid foam
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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
- B60R19/18—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
Abstract
Description
본 발명은 범퍼레일 및 범퍼타워를 이용한 리어범퍼 구조에 관한 것으로서,더욱 상세하게는 폐단면 구조를 갖는 범퍼레일에 충격흡수부재를 삽입시키는 동시에 상기 범퍼레일의 후단에 소정 폭을 가진 브라켓 형태의 범퍼타워를 볼트 고정함으로써, 리어범퍼 내의 패키지 공간부를 축소시켜 승객에게 충분한 거주성을 제공하고, 강성 및 충격 흡수 능력이 향상되어 전체적인 충돌 성능이 증대되어진 범퍼레일 및 범퍼타워를 이용한 리어범퍼 구조에 관한 것이다.The present invention relates to a rear bumper structure using a bumper rail and a bumper tower, and more particularly, to insert a shock absorbing member into a bumper rail having a closed cross-sectional structure, and at the same time, a bracket type bumper having a predetermined width at the rear end of the bumper rail. It is a rear bumper structure using a bumper rail and a bumper tower in which the tower is bolted to reduce the package space in the rear bumper to provide sufficient occupancy to passengers, and the rigidity and shock absorbing ability are improved to increase the overall collision performance. .
일반적으로, 자동차에는 충돌시 충격을 흡수하여 탑승자를 보호하는 범퍼 구조물이 차체 전후방에 장착되는데, 이 범퍼 구조물은 범퍼의 외관미를 향상시키기 위하여 가장 바깥쪽에 설치되는 범퍼 커버(110)와, 이 범퍼 커버(110)의 안쪽면에 부착되어 충격을 1차적으로 흡수하는 충격흡수부재(120)를 갖춘 구조로 되어 있다.In general, a vehicle is equipped with a bumper structure that absorbs shock during a collision to protect the occupant in the front and rear of the vehicle body, the bumper structure is the outermost bumper cover 110 and the bumper is installed to improve the appearance of the bumper, Attached to the inner surface of the cover 110 is a structure having a shock absorbing member 120 to absorb the shock primarily.
그리고, 충돌 시, 상기 충격흡수부재(120)만으로는 탑승자를 효과적으로 보호하기에 미흡하므로 보강부재(130) 및 스틸재질의 범퍼레일(141,142)이 충격흡수부재(120) 안쪽에 위치되도록 설치되는데, 상기 보강부재(130)는 범퍼레일(141)에 점용접되고, 상기 범퍼레일(142)은 그 후방에 체결된 범퍼 스테이(미도시)에 의해 차체 프레임(150)에 체결되어 범퍼 구조물을 전체적으로 지지한다.In addition, since the impact absorbing member 120 alone is insufficient to effectively protect the occupant during a collision, the reinforcing member 130 and the bumper rails 141 and 142 of steel are installed to be positioned inside the impact absorbing member 120. The reinforcing member 130 is spot welded to the bumper rail 141, and the bumper rail 142 is fastened to the vehicle body frame 150 by a bumper stay (not shown) fastened to the rear thereof to support the bumper structure as a whole. .
결국, 범퍼 구조물이 설치된 차량에서는 상기 충격흡수부재(120)가 충돌 시 전해지는 충격을 1차로 흡수하게 되고, 그 여분의 충격이 보강부재(130) 및 범퍼레일(141,142)로 전달되어 적절히 흡수되는 동시에 차체 프레임(150)으로 분산되어지며, 이에 의해 탑승자는 적은 양의 충격만을 전달받게 되면서 보호될 수 있는 것이다.As a result, in the vehicle in which the bumper structure is installed, the shock absorbing member 120 absorbs the shock transmitted at the time of collision, and the extra shock is transferred to the reinforcing members 130 and the bumper rails 141 and 142 to be appropriately absorbed. At the same time it is distributed to the body frame 150, whereby the occupant can be protected while receiving only a small amount of impact.
따라서, 상기 충격흡수부재(120)와 보강부재(130) 및 범퍼레일(141,142)은충돌 시 전해지는 충격 에너지에 쉽게 붕괴되지 않도록 충분한 강도를 가지면서도 우수한 에너지 흡수능력을 가지도록 설계되어야 하고, 특히 리어범퍼(100)의 단면구조는 충돌성능을 규정짓는 중요한 요소가 된다.Therefore, the shock absorbing member 120, the reinforcing member 130 and the bumper rails (141, 142) should be designed to have an excellent energy absorption capacity while having a sufficient strength so as not to easily collapse to the impact energy transmitted during the collision, in particular The cross-sectional structure of the rear bumper 100 is an important factor defining the collision performance.
종래의 리어범퍼(100)의 단면구조는 도 2에 도시된 바와 같이, 상기 범퍼 커버(110)를 전체적으로 지지하는 폼(foam) 형태의 충격흡수부재(120)와, 그 후부에 범퍼 중심부의 국부적인 강성을 보완하기 위해 전면이 굴곡되어진 'ㄷ'자형상의 보강부재(130)와, 상기 보강부재(130)와 양단이 점용접되는 제 1범퍼레일(141)과, 중간에 공간부가 형성되도록 되어 있으며 상기 제 1범퍼레일(141)과 양단이 점용접되어 폐단면 구조를 갖는 전방 돌출 형태의 제 2범퍼레일(142)로 이루어져 있다.The cross-sectional structure of the conventional rear bumper 100 is, as shown in Figure 2, the shock absorbing member 120 in the form of a foam (foam) to support the bumper cover 110 as a whole, and the local portion of the bumper center at the rear The 'c' shaped reinforcement member 130 is bent in front to complement the stiffness, the first bumper rail 141 is spot welded to both ends of the reinforcement member 130, and the space portion is formed in the middle The first bumper rail 141 and both ends are spot welded, and each of the first bumper rails 142 includes a second bumper rail 142 having a front end shape.
이때, 상기 충격흡수부재(120)는 그 중심부의 가로 두께의 길이는 54mm가 적용되고, 리어범퍼의 전체적인 패키지 공간부의 가로 길이는 200mm가 적용된다.At this time, the shock absorbing member 120 is applied to the length of the horizontal thickness of the center 54mm, the horizontal length of the overall package space of the rear bumper is applied to 200mm.
이와 같이 구성된 리어범퍼의 단면구조는 목표 충돌 성능인 5마일 성능을 내기 위해 상기 충격흡수부재(120)의 전체적인 폼(foam)의 면적 및 중량이 표 1에 나타낸 바와 같이 과다하게 고려되어지는 단점이 있다.The cross-sectional structure of the rear bumper configured as described above has a disadvantage in that the area and weight of the overall foam of the shock absorbing member 120 are excessively considered as shown in Table 1 in order to achieve a target performance of 5 miles. have.
따라서, 상기 리어범퍼(100)의 단면구조에 있어서, 기본 골격을 유지하는 제 1범퍼레일(141)의 관성 모멘트를 중대시켜 결과적으로 제 1범퍼레일(142)의 충분한 강성 및 에너지 흡수능력을 얻을 수 있는 자동차용 리어범퍼의 단면구조가 요구된다.Therefore, in the cross-sectional structure of the rear bumper 100, the moment of inertia of the first bumper rail 141 holding the basic skeleton is significant, and as a result, sufficient rigidity and energy absorption capacity of the first bumper rail 142 can be obtained. There is a need for a cross-sectional structure of a rear bumper for automobiles.
따라서, 본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로서, 폐단면 구조를 갖는 제1 및 제2 범퍼레일로 이루어진 범퍼레일에 폼형태의 충격흡수부재를 삽입시키는 동시에 상기 범퍼레일의 후단에 소정 폭을 가진 브라켓 형태의 범퍼타워를 볼트 고정함으로써, 리어범퍼 내의 패키지 공간부를 축소시켜 승객에게 충분한 거주성을 제공하고, 강성 및 충격 흡수 능력이 향상되어 전체적인 충돌 성능이 증대되어진 범퍼레일 및 범퍼타워를 이용한 리어범퍼 구조를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, inserting the foam-type shock absorbing member in the bumper rail consisting of the first and second bumper rail having a closed cross-sectional structure at the rear end of the bumper rail By fixing the bracket-shaped bumper tower with a predetermined width, the package space in the rear bumper is reduced to provide sufficient occupancy to the passengers, and the stiffness and shock absorbing ability are improved, thereby increasing the overall collision performance. The purpose of the present invention is to provide a rear bumper structure.
도 1은 본 발명에 따른 범퍼레일 및 범퍼타워를 이용한 리어범퍼 구조를 나타내는 측단면도,1 is a side cross-sectional view showing a rear bumper structure using a bumper rail and a bumper tower according to the present invention;
도 2는 종래의 리어범퍼 구조를 나타내는 측단면도이다.2 is a side cross-sectional view showing a conventional rear bumper structure.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
10 : 리어범퍼11a : 제 1범퍼레일10: rear bumper 11a: the first bumper rail
11b : 제 2범퍼레일11a-1 : 플랜지11b: second bumper rail 11a-1: flange
12 : 충격흡수부재13 : 보강부재12: shock absorbing member 13: reinforcing member
14a,14b : 범퍼타워14a-1 : 플랜지14a, 14b: bumper tower 14a-1: flange
15a,15b : 공간부20 : 차체 프레임15a, 15b: space 20: body frame
이하, 상기와 같은 목적을 달성하기 위한 본 발명의 특징에 대해 설명하면 다음과 같다.Hereinafter, the features of the present invention for achieving the above object are as follows.
본 발명은 폐단면 구조를 갖는 범퍼레일과, 폼(foam) 형태의 충격흡수부재와, 범퍼 중심부의 국부적인 강성을 보완하기 위한 보강부재를 포함하여 구성된 리어범퍼 구조에 있어서,The present invention provides a rear bumper structure including a bumper rail having a closed cross-sectional structure, a shock absorbing member in the form of a foam, and a reinforcing member for supplementing local rigidity of the bumper center.
장방형 형태의 폐단면 구조를 갖는 범퍼레일(11a,11b) 내측에 충격흡수부재(12)와 보강부재(13)가 내장되고, 상기 범퍼레일(11a,11b)의 후부에 차체 프레임(20)측에 지지되는 브라켓 형상의 범퍼타워(14a,14b)가 장착된 것을 특징으로 한다.The shock absorbing member 12 and the reinforcing member 13 are embedded inside the bumper rails 11a and 11b having a rectangular closed cross-sectional structure, and the body frame 20 is provided at the rear of the bumper rails 11a and 11b. Bracket-shaped bumper tower (14a, 14b) that is supported on it is characterized in that it is mounted.
특히, 상기 범퍼레일(11a,11b)은 양단에 플랜지(11a-1)가 형성된 'ㄷ'자 형상의 제 1범퍼레일(11a)과, 'ㅣ'자 형상의 제 2범퍼레일(11b)이 융착고정되어 이루어진 것을 특징으로 한다.In particular, the bumper rails (11a, 11b) is a 'b' shaped first bumper rail (11a) having a flange (11a-1) at both ends, and the 'b' shaped second bumper rail (11b) It is characterized in that the fusion is fixed.
또한, 상기 보강부재(13)는 제 1범퍼레일(11a)과 트러스(truss) 구조 형태를 이뤄 폐단면 구조를 구획하고, 그 구획된 뒷쪽의 제 2범퍼레일(11b)과 보강부재(13) 사이에는 충격흡수부재(12)의 장착을 위한 공간부(15b)를 구비할 수 있도록 된 것을 특징으로 한다.In addition, the reinforcing member 13 forms a first bumper rail 11a and a truss structure, and partitions the closed cross-sectional structure, and the second bumper rail 11b and the reinforcing member 13 of the rear part are partitioned. It is characterized in that the space portion 15b for mounting the shock absorbing member 12 therebetween.
상기 충격흡수부재(12)는 상기 공간부(15b)와 동일한 형상으로서, 전방으로 상부와 하부가 돌출된 'ㄷ'자 형상으로 된 것을 특징으로 한다.The shock absorbing member 12 is the same shape as the space portion 15b, characterized in that the 'c' shape protruding the upper and lower portions forward.
이하, 첨부도면을 참조하여 본 발명의 구성에 대해 상세하게 설명하면 다음과 같다.Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail.
도 1은 본 발명에 따른 범퍼레일 및 범퍼타워를 이용한 리어범퍼 구조를 나타내는 측단면도이다.1 is a side cross-sectional view showing a rear bumper structure using a bumper rail and a bumper tower according to the present invention.
본 발명은 범퍼레일(11a,11b)와 충격흡수부재(12) 및 보강부재(13)의 단면구조를 강도 및 충격 흡수능력의 향상이 가능한 최적의 형태로 설정하고, 상기 범퍼레일(11a,11b)의 후부에 브라켓 형태의 범퍼타워(14a,14b)를 장착시켜 이를 통해 리어범퍼(10)의 전체적인 충돌성능을 향상시키고자 한 것이다.The present invention is to set the cross-sectional structure of the bumper rails (11a, 11b), the shock absorbing member 12 and the reinforcing member (13) in an optimal form that can improve the strength and shock absorption capacity, and the bumper rails (11a, 11b) It is intended to improve the overall collision performance of the rear bumper 10 by mounting the bracket bumper tower (14a, 14b) in the rear of the).
도 1과 도 2를 참조하여 본 발명에 따른 리어범퍼의 단면구조를 살펴보면, 본 발명의 범퍼레일(11a,11b)은 최초 충격 에너지를 흡수하는 제 1범퍼레일(11a)과, 상기 제 1범퍼레일(11a)에 융착 고정되어 후방 밀림을 방지하는 제 2범퍼레일(11b)로 구성되어 있다.Looking at the cross-sectional structure of the rear bumper according to the present invention with reference to Figures 1 and 2, the bumper rail (11a, 11b) of the present invention is the first bumper rail (11a) for absorbing the first impact energy and the first bumper It is comprised by the 2nd bumper rail 11b which is fusion-fixed to the rail 11a, and prevents back sliding.
상기 제 1범퍼레일(11a)은 'ㄷ'자 형상으로 그 양단은 플랜지(11a-1)가 형성되어 있고, 상기 제 2범퍼레일(11b)은 'ㅣ'자 형상으로 형성되어 있는 바, 상기 범퍼레일(11a,11b)이 일체로 융착고정되어 장방형 형태의 폐단면 구조를 이루도록 되어 있다.The first bumper rail 11a has a 'c' shape, and both ends thereof have a flange 11a-1, and the second bumper rail 11b has a 'ㅣ' shape. The bumper rails 11a and 11b are integrally fused and fixed to form a rectangular closed cross-sectional structure.
이때, 상기 제 1범퍼레일(11a)의 내측면에는 범퍼 중심부의 국부적인 강성을 보완하기 위해 'U'자 형상의 보강부재(13)가 제 1범퍼레일(11a)의 돌출 방향과 반대방향으로 돌출되어 융착고정된다.At this time, the inner surface of the first bumper rail (11a) 'U' shaped reinforcing member 13 in the opposite direction to the protrusion direction of the first bumper rail (11a) to compensate for the local rigidity of the bumper center It protrudes and is fused and fixed.
이와 같이 조립된 상기 범퍼레일(11a,11b)의 폐단면 구조의 내부에는 즉, 상기 제 2범퍼레일(11b)과 보강부재(13) 사이의 공간부(15b)에는 상기 보강부재(13)와 마찬가지로 범퍼 중심부의 강성 증대를 목적으로 충격흡수부재(12)가 장착되어 있다.The reinforcing member 13 and the reinforcing member 13 are disposed in the space 15b between the second bumper rail 11b and the reinforcing member 13 in the closed end structure of the bumper rails 11a and 11b assembled as described above. Similarly, the shock absorbing member 12 is mounted for the purpose of increasing rigidity at the center of the bumper.
따라서, 본 발명에 따른 리어범퍼(10)의 단면구조에 있어서, 상기 범퍼레일(11a,11b)의 폐단면의 내부 공간부(15a,15b)는 보강부재(13)에 의해 전방의 공간부(15a)가 뒤쪽으로 구획되어 있는 형태로 되어 있는 동시에 그 후부의 공간부(15b)가 충격흡수부재(12)에 의해 밀폐된 형태로 되어 있다.Therefore, in the cross-sectional structure of the rear bumper 10 according to the present invention, the inner space portions 15a and 15b of the closed end surfaces of the bumper rails 11a and 11b are formed by the reinforcing member 13 in front of the space portion ( 15a) is partitioned to the rear, and the rear space 15b is sealed by the shock absorbing member 12. As shown in FIG.
상기 충격흡수부재(12)는 상기 공간부(15b)와 동일한 형상으로서, 전방으로 상부와 하부가 돌출된 'ㄷ'자 형상으로 되어 있다.The shock absorbing member 12 has the same shape as the space portion 15b and has a 'c' shape in which the upper and lower portions protrude forward.
상기와 같이 제 1범퍼레일(11a)의 내측면 중간에 그 후방으로 돌출된 형태의 보강부재(13)를 형성하게 되면 전면 전체가 평면형태로 되어 있는 것에 비해 강도가 상대적으로 증대될 수 있게 된다.As described above, when the reinforcing member 13 protruding rearwardly is formed in the middle of the inner side of the first bumper rail 11a, the strength of the entire front surface can be relatively increased compared to that of the flat surface. .
한편, 본 발명의 바람직한 구현예에 있어서, 범퍼레일(11a,11b)과 보강부재(13)의 두께는 각각 동일한 두께로서, 1.4mm로 설정하여 구성한다.On the other hand, in the preferred embodiment of the present invention, the bumper rails (11a, 11b) and the thickness of the reinforcing member 13 is the same thickness, respectively, set to 1.4mm.
상기 범퍼레일(11a,11b)의 폐단면 구조의 후부에는 차체 프레임(20)에 점용접되는 범퍼타워(14a,14b)가 구비되어 있는 바, 상기 범퍼타워(14a,14b)는 브라켓 형태로서, 양단이 절곡되어 있으며, 그 절곡된 부분이 제 2범퍼레일(11b) 및 차체 프레임(20)에 각각 고정된다.Bumper towers 14a and 14b which are spot welded to the vehicle body 20 are provided at the rear of the closed cross-sectional structure of the bumper rails 11a and 11b, and the bumper towers 14a and 14b have a bracket shape. Both ends are bent and the bent part is fixed to the 2nd bumper rail 11b and the vehicle body frame 20, respectively.
이때, 상기 제 2범퍼레일(11b)에 고정되는 플랜지(14a-1)에는 볼트로 고정하기 위해 상,하부에 각각 2개소의 너트가 용접된다.At this time, two nuts are welded to the flange 14a-1 fixed to the second bumper rail 11b, respectively, in the upper and lower portions to fix the bolts.
한편, 본 발명의 바람직한 구현예에 있어서, 상기 범퍼타워(14a,14b)의 폭은 300mm로 설정하여 구성한다.On the other hand, in the preferred embodiment of the present invention, the width of the bumper tower (14a, 14b) is configured by setting to 300mm.
이와 같이 하여, 차량 충돌 시에는 제 1범퍼레일(11a)의 상기 전면이 최초 1차 충격 에너지를 흡수하게 되고, 범퍼레일(11a,11b)의 내부 중간에 위치한 상기 보강부재(13)가 2차로 충격 에너지를 흡수하게 되며, 그 후부에 형성된 충격흡수부재(12)와 제 2범퍼레일(11b)은 각각 3차 및 4차 충격 에너지를 흡수하게 된다.In this way, when the vehicle collides, the front surface of the first bumper rail 11a absorbs the first primary impact energy, and the reinforcing member 13 positioned in the middle of the bumper rails 11a and 11b is secondarily. The impact energy is absorbed, and the shock absorbing member 12 and the second bumper rail 11b formed at the rear portion absorb the third and fourth impact energy, respectively.
또한, 그 후부의 범퍼타워(14a,14b)는 5차 충격 에너지를 흡수하게 되는 바, 각각의 브라켓의 구부러짐이 원활히 유도되면서 충격 에너지를 흡수할 수 있도록 되어 있다.In addition, the rear bumper towers 14a and 14b absorb the fifth impact energy, and thus the impact energy can be absorbed while the bending of each bracket is induced smoothly.
특히, 본 발명에 따른 제 1범퍼레일(11a)과 보강부재(13)는 교량의 트러스(truss) 구조와 유사한 구조로 형성되어 충격 하중이 보강부재(13)의 절점에 작용하도록 되어 있어 충돌 시, 구부러짐이 원활히 유도되면서 기존대비, 보다 많은 충격 에너지가 흡수될 수 있도록 되어 있다.In particular, the first bumper rail (11a) and the reinforcing member 13 according to the present invention is formed in a structure similar to the truss structure of the bridge so that the impact load acts on the nodes of the reinforcing member 13 when the collision In addition, bending is induced smoothly, and more impact energy can be absorbed than before.
따라서, 리어범퍼(10)의 기본 골격을 이루는 제 1범퍼레일(11a)은 그 관성 모멘트가 157,909mm4로서 종래(35,446mm4) 대비, 상당히 증대되어 있다.Thus, the first bumper rail (11a) forming a basic skeleton of a rear bumper (10) has a moment of inertia that is, significantly increasing the conventional (35,446mm 4) as compared to 157,909mm 4.
이와 같은 구조로 된 리어범퍼(10)의 단면구조는 범퍼레일(11a,11b)의 토탈(total) 단면적이 16% 절감되므로 중량 또한 동일하게 절감된다.The cross-sectional structure of the rear bumper 10 having such a structure reduces the total cross-sectional area of the bumper rails 11a and 11b by 16%, thereby reducing the weight.
또한, 상기 충격흡수부재(12)를 범퍼레일(11a,11b) 폐단면의 내부공간에 삽입함으로써, 종래에 충격흡수부재(12)가 차지하는 공간을 40% 정도 축소가능하게 된다.In addition, by inserting the shock absorbing member 12 into the inner space of the closed end surface of the bumper rails 11a and 11b, the space occupied by the shock absorbing member 12 can be reduced by about 40%.
하기의 표 2는 리어범퍼(10)의 구성별 단면적 및 제원 분석을 요약하여 나타내고 있다.Table 2 below summarizes the cross-sectional area and specification analysis for each configuration of the rear bumper 10.
즉, 본 발명의 구현예가 적용된 리어범퍼(10)의 단면적은 종래에 비해, 16%의 절감을 이루고, 차체에 대한 리어범퍼(10)의 돌출량 및 리어범퍼(10) 내의 패키지 공간부는 각각 40% 및 20%의 절감을 이루게 된다.That is, the cross-sectional area of the rear bumper 10 to which the embodiment of the present invention is applied is reduced by 16%, and the amount of protrusion of the rear bumper 10 with respect to the vehicle body and the package space in the rear bumper 10 are each 40. Savings of% and 20%.
상술한 바와 같이, 본 발명에 따른 범퍼레일 및 범퍼타워를 이용한 리어범퍼 구조는 차량 전체의 제원을 축소하여 승객에게 충분한 거주성을 제공하고, 리어범퍼의 중량 절감이 가능하여 연비 및 동력 성능을 개선시킬 수 있으며, 당사 기술에 대한 엔지니어링 이미지가 상승하는 효과가 있다.As described above, the rear bumper structure using the bumper rail and the bumper tower according to the present invention reduces the specifications of the entire vehicle to provide sufficient occupancy to the passengers, and it is possible to reduce the weight of the rear bumper to improve fuel economy and power performance. It has the effect of increasing the engineering image of our technology.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020076789A KR20040049393A (en) | 2002-12-05 | 2002-12-05 | Structure of rear bumper using bumper rail and bumper tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020076789A KR20040049393A (en) | 2002-12-05 | 2002-12-05 | Structure of rear bumper using bumper rail and bumper tower |
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| Publication Number | Publication Date |
|---|---|
| KR20040049393A true KR20040049393A (en) | 2004-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020020076789A KR20040049393A (en) | 2002-12-05 | 2002-12-05 | Structure of rear bumper using bumper rail and bumper tower |
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| KR (1) | KR20040049393A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101055119B1 (en) * | 2009-10-22 | 2011-08-08 | 현대자동차주식회사 | Rear shock dispersion structure of the vehicle |
| US11511691B2 (en) * | 2018-11-30 | 2022-11-29 | Nissan North America, Inc. | Energy absorber for sensor protection |
-
2002
- 2002-12-05 KR KR1020020076789A patent/KR20040049393A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101055119B1 (en) * | 2009-10-22 | 2011-08-08 | 현대자동차주식회사 | Rear shock dispersion structure of the vehicle |
| US11511691B2 (en) * | 2018-11-30 | 2022-11-29 | Nissan North America, Inc. | Energy absorber for sensor protection |
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