KR20020097403A - A bumper of automobile - Google Patents

A bumper of automobile Download PDF

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Publication number
KR20020097403A
KR20020097403A KR1020010035201A KR20010035201A KR20020097403A KR 20020097403 A KR20020097403 A KR 20020097403A KR 1020010035201 A KR1020010035201 A KR 1020010035201A KR 20010035201 A KR20010035201 A KR 20010035201A KR 20020097403 A KR20020097403 A KR 20020097403A
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KR
South Korea
Prior art keywords
bumper
stay
bumper cover
shock
side member
Prior art date
Application number
KR1020010035201A
Other languages
Korean (ko)
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KR100440855B1 (en
Inventor
이호길
Original Assignee
현대자동차주식회사
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Priority to KR10-2001-0035201A priority Critical patent/KR100440855B1/en
Publication of KR20020097403A publication Critical patent/KR20020097403A/en
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Publication of KR100440855B1 publication Critical patent/KR100440855B1/en

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Classifications

    • 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
    • B60R19/30—Elastomeric 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
    • 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
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vibration Dampers (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

PURPOSE: A bumper of a vehicle is provided to protect a passenger by sufficiently absorbing the shock energy when an inclined collision occurs around a bumper cover and to relieve the financial burden on a customer by preventing the damage on the bumper in a low-speed collision. CONSTITUTION: A bumper of a vehicle comprises a side member(10), a bumper cover(20), and a shock absorbing unit(100). The side member is installed on each left and right side of a vehicle body. The bumper cover is placed in front of the side member. A shock absorber(21) for absorbing a shock is interposed in the bumper cover. The shock absorbing unit interposed between the side member and the bumper cover absorbs the shock with the distortional energy when the shock is inclined upward or downward. The shock absorbing unit comprises a stay(110), a flange(120), a rotating bar(130), and a beam(140).

Description

자동차의 범퍼{A BUMPER OF AUTOMOBILE}Bumper of car {A BUMPER OF AUTOMOBILE}

본 발명은 자동차의 범퍼에 관한 것이다.The present invention relates to a bumper of a motor vehicle.

일반적으로 자동차의 범퍼(bumper)는 자동차의 전면과 후면에 마련되어 충돌사고시 충격력을 흡수함으로써 운전자와 탑승자의 보호 그리고 차체의 변형을 방지하는 기능을 수행한다.In general, bumpers of a vehicle are provided at the front and rear of the vehicle to absorb impact force during a crash, thereby protecting the driver and the occupant and preventing deformation of the vehicle body.

이러한 자동차의 범퍼는, 자동차의 바디 전면에 범퍼 커버를 마련하고, 이 범퍼 커버의 내면에 압소버를 개재하며, 스테이 및 빔을 통해 좌,우 사이드 멤버에 범퍼 커버를 연결함으로써 충돌 발생시 범퍼 커버와 압소버 그리고 스테이와 빔을 통해 좌,우 사이드 멤버에 전달함으로써 완충의 효과를 얻도록 하고 있다.The bumper of such a vehicle is provided with a bumper cover on the front of the body of the vehicle, interposed with an absorber on the inner surface of the bumper cover, and connecting the bumper cover to the left and right side members through a stay and a beam, so that the bumper cover and Absorber and the left and right side members through the stay and beam to the buffer effect.

그러나 이러한 통상의 범퍼는, 정면 충돌을 기준으로 하여 설계된 것이기 때문에 근래에 들어와서 상대적으로 지상고가 높은 차량(예를들면 갤로퍼등과 같은 레저용 차량)과 승용차간의 충돌 발생시 효과적으로 충격을 흡수할 수 없었고, 특히 저속 충돌시에도 범퍼의 손상이 심하게 발생되어 수리비의 과다로 소비자에게 경제적인 부담감을 가중시키는 요인이 발생되고 있다.However, since these conventional bumpers are designed based on frontal collisions, they have not been able to effectively absorb shock in recent years when a collision between a relatively high ground vehicle (eg, a recreational vehicle such as a galloper) and a passenger car occurs. In particular, bumper damage is severely generated even at low-speed collisions, causing excessive burden on the consumer due to excessive repair costs.

즉, 지상고가 높은 차량과 일반 승용차간의 충돌이 발생될 때 승용차의 범퍼 상부측으로 편중된 하중이 가해지게 되고, 이에따라 적은 충격에 의해서도 빔 및 스테이 등의 변형이 야기되는 것이다.That is, when a collision occurs between a vehicle having a high ground height and a general passenger vehicle, a load biased toward the upper side of the bumper of the passenger car is applied, and thus deformation of the beam and stay is caused by a small impact.

이러한 문제점을 해결하기 위하여 도 4에서와 같이 미국특허 US0605633호에서는, 좌,우 사이드 멤버(side member;1)상에 브래킷(bracket;2)을 각각 고정 설치하고 커버(cover;3)의 내측 상부에 좌,우 방향으로 길게 빔(beam;4)을 설치한 뒤, 브래킷(2)과 빔(4)의 좌,우 양단에 "L"형상의 연결부재(5)를 고정 설치한 범퍼가 제안되어 있다.In order to solve this problem, as shown in FIG. 4, in US Patent US0605633, a bracket 2 is fixedly installed on the left and right side members 1 and the inner upper part of the cover 3 is respectively installed. Bumper is proposed to install the beam (4) long in the left and right direction, and to fix the "L" shaped connecting member (5) on both ends of the bracket (2) and the left and right of the beam (4) It is.

이러한 종래 범퍼는, 충돌이 발생되면, 빔(4)이 사이드 멤버(1)까지의 거리만큼 휨 변형 및 비틀림 발생을 통해 어느정도의 충격 에너지를 흡수하도록 하여저속 충돌시 빔 즉, 사이드 멤버(1)의 변형을 방지시키고 있는 것이다.Such a conventional bumper is such that when a collision occurs, the beam 4 absorbs a certain amount of impact energy through bending deformation and torsion by a distance to the side member 1 so that the beam, that is, the side member 1 at a low speed collision, is generated. To prevent deformation.

그러나 이러한 종래 범퍼에 있어서는, 저속 충돌시 어느정도 충격 에너지 흡수 효과가 있는 것은 사실이지만, 빔(4)이 쉽게 변형되어 이를 교환해야 함으로써 이 또는 소비자에게 경제적인 부담감을 가중시키는 요인이 되고 있다.However, in such a conventional bumper, it is true that there is a shock energy absorbing effect to a certain extent at low impacts, but the beam 4 is easily deformed and must be replaced, thereby increasing the economic burden on this or the consumer.

또한 어느정도 이상의 충돌 발생시에는 빔(4)의 쉽게 변형되어 충분한 충격 에너지 흡수효과를 발휘하지 못하는 문제점이 내재되어 있다.In addition, when a collision occurs to a certain degree, there is a problem in that the beam 4 is easily deformed and does not exhibit sufficient impact energy absorption effect.

본 발명은 이와같은 종래의 문제점을 해결하기 위하여 창출된 것으로서, 범퍼 커버를 중심으로 상부 또는 하부에 치우친 충돌이 발생될 때 충분한 충격 에너지 흡수 효과를 발휘할 수 있어 탑승객을 보호할 수 있으며, 저속 충돌시에도 쉽게 손상되는 것이 방지되어 즉, 교환 수리의 우려가 억제됨으로써 소비자의 경제적인 부담감을 줄일 수 있는 자동차의 범퍼를 제공함에 그 목적이 있다.The present invention was created in order to solve such a conventional problem, it is possible to exert a sufficient impact energy absorption effect when the collision occurs in the upper or lower center around the bumper cover can protect the passengers, at the time of low-speed collision It is an object of the present invention to provide a bumper of an automobile that can be easily prevented from being damaged, that is, the risk of replacement and repair is suppressed, thereby reducing the economic burden on the consumer.

상기한 목적을 달성하기 위하여 본 발명은, 차체의 좌,우 하면에 길이 방향으로 나란하게 설치되는 좌,우 사이드 멤버와; 상기 사이드 멤버의 전방에 위치되며, 내면에 압소버가 개재된 범퍼 커버와; 상기 사이드 멤버와 범퍼 커버 사이에 개재되며, 범퍼 커버에 상부 또는 하부로 편중된 충돌이 발생될 때 비틀림 에너지를 통해 충격을 흡수하는 완충수단;으로 구성된 것을 그 특징으로 한다.In order to achieve the above object, the present invention, the left and right side members are installed side by side in the longitudinal direction on the lower left and right of the vehicle body; A bumper cover positioned in front of the side member and having an absorber interposed therein; It is interposed between the side member and the bumper cover, cushioning means for absorbing the impact through the torsional energy when a collision biased to the upper or lower in the bumper cover;

도 1은 본 발명에 따른 범퍼의 단면도.1 is a cross-sectional view of a bumper according to the present invention.

도 2는 요부 발췌 정면도.2 is a front view of the main part excerpt.

도 3은 완충수단을 발췌하여 나타낸 분리 사시도.Figure 3 is an exploded perspective view showing the buffer means.

도 4는 종래 범퍼의 단면도.4 is a cross-sectional view of a conventional bumper.

<도면의 주요부분에 대한 부호 설명><Description of Signs of Major Parts of Drawings>

10 : (좌,우)사이드 멤버20 : 범퍼 커버21 : 압소버10: (left, right) side member 20: bumper cover 21: Absorber

100 : 완충수단110 : 스테이111 : 연결대100: buffer means 110: stay 111: connecting rod

112 : 걸림홈113 : 가이드 돌기120 : 플랜지112: locking groove 113: guide protrusion 120: flange

121 : 걸림홈122 : 걸림돌기130 : 회전봉121: locking groove 122: locking projection 130: rotary rod

131 : 돌기140 : 빔150 : 연결부재131: projection 140: beam 150: connecting member

도 1 내지 도 3에 나타내 보인 바와 같이 본 발명은, 크게 좌,우 사이드 멤버(side member;10)와 범퍼 커버(bumper cover;20) 그리고 완충수단(100)으로 대별된다.As shown in FIGS. 1 to 3, the present invention is roughly divided into left and right side members 10, bumper covers 20, and shock absorbing means 100.

좌,우 사이드 멤버(10)는 차체의 좌,우 하면에 길이 방향으로 나란하게 설치된다.The left and right side members 10 are installed side by side in the longitudinal direction on the bottom left and right sides of the vehicle body.

범퍼 커버(20)는 사이드 멤버(10)의 전방측에 위치되는 것으로서, 내면에는 충격 흡수를 위한 압소버(21)가 개재된다.The bumper cover 20 is located at the front side of the side member 10, and an absorber 21 for absorbing shock is interposed therein.

완충수단(100)은 실질적으로 본 발명의 특징적인 요소를 갖고 있는 것으로서, 사이드 멤버(10)와 범퍼 커버(20) 사이에 개재되어 범퍼 커버(20)에 상부 또는 하부 방향으로 편중된 충돌이 발생될 때 비틀림 에너지를 통해 충격을 흡수하는 기능을 수행한다.The shock absorbing means 100 has substantially the characteristic elements of the present invention, and the collision between the side member 10 and the bumper cover 20 and the bumper cover 20 biased in an upward or downward direction occurs. When it does, it absorbs shock through torsional energy.

이러한 완충수단(100)의 상세 구조를 보면, 스테이(stay;110)와 플랜지 (flange;120) 그리고 회전봉(130)과 빔(beam;140)으로 이루어진다.The detailed structure of the shock absorbing means 100 includes a stay 110, a flange 120, a rotating rod 130, and a beam 140.

스테이(110)는, 후면에 연결대(111)가 마련되어 사이드 멤버(10)에 고정되며, 전면과 좌,우 양측면이 개방된 구조를 취하고 있다.The stay 110 has a structure in which a connecting rod 111 is provided on the rear surface and fixed to the side member 10, and both front and left and right sides are open.

그리고 이 스테이(110)의 일측 상,하면에는 소정폭으로 걸림홈(112)이 형성된다.And on one side of the stay 110, the engaging groove 112 is formed in a predetermined width.

플랜지(120)는, 스테이(110)의 전면측 상,하 양측면에 각각 내측 방향으로 연장 형성되는 것으로서, 중심면에는 소정폭으로 걸림홈(121)이 형성되며, 이 걸림홈(121)의 양측면에는 일정간격으로 걸림돌기(122)가 형성된다.The flange 120 is formed to extend in the inward direction on each of the upper and lower sides of the front side of the stay 110, the center surface is formed with a locking groove 121 with a predetermined width, both sides of the locking groove 121 The locking protrusion 122 is formed at a predetermined interval.

회전봉(130)은 스테이(110)의 내면에 좌,우 방향으로 끼워 삽입되는 것으로서, 상,하 외주면에는 전술한 스테이(110)의 일측 상,하면에 형성된 걸림홈(112)에위치되는 돌기(131)가 형성된다.Rotating rod 130 is inserted into the left and right directions to the inner surface of the stay 110, the upper, lower outer surface projections (located in the engaging groove 112 formed on one side, upper and lower surfaces of the stay 110 described above ( 131 is formed.

이때 특히 돌기(131)가 끼워 삽입되어 상호간의 사이에 걸림력이 발생되도록 걸림홈(112)의 내면에는 돌기(131)가 끼워 삽입될 수 있도록 가이드 돌기(113)가 돌출 형성된다.At this time, the guide protrusion 113 is formed to protrude so that the protrusion 131 can be inserted into the inner surface of the locking groove 112 so that the protrusion 131 is inserted and inserted therebetween.

빔(140)의 범퍼 커버(20)의 내측 상,하면에 위치되는 것으로서, 연결부재 (150)를 통해 회전봉(130)과 결합된다.As the upper and lower surfaces of the bumper cover 20 of the beam 140, it is coupled to the rotating rod 130 through the connection member 150.

즉, 연결부재(150)의 일단은 빔(140)에 결합되고, 타단은 회전봉(130)의 외주면에 결합되며, 특히 연결부재(150)의 결합위치는 플랜지(120)의 걸림홈(121)과 인접된 위치이다.That is, one end of the connection member 150 is coupled to the beam 140, the other end is coupled to the outer circumferential surface of the rotating rod 130, in particular, the coupling position of the connection member 150 is the locking groove 121 of the flange 120 Adjacent to.

이와같이 구성된 본 발명은, 범퍼 커버(20)의 상부 또는 하부측에 편중된 충돌력이 가해지게 되면, 범퍼 커버(20)의 내측에 위치된 빔(140)에 전달되고, 동시에 연결부재(150)를 통해 회전봉(130)에 전달되면서 회전봉(130)이 회전하려는 힘을 받게된다.According to the present invention configured as described above, when an imparting collision force is applied to the upper or lower side of the bumper cover 20, the present invention is transmitted to the beam 140 located inside the bumper cover 20, and at the same time, the connection member 150. As it is transmitted to the rotating rod 130 through the rotating rod 130 is subjected to the force to rotate.

이와같이 회전봉(130)이 회전하려는 힘을 받음과 회전봉(130)은 연결부재(150)와 플랜지(120)의 걸림홈(121)에 형성된 걸림돌기(122)간의 걸림력과, 회전봉(130)의 외주면에 형성된 돌기(131)와 스테이(110)의 가이드 돌기(113)간의 걸림력에 의해 회전이 방지된다.In this way, the rotary rod 130 receives the force to rotate and the rotary rod 130 is the locking force between the connecting member 150 and the locking projection 122 formed in the locking groove 121 of the flange 120, the rotation of the rod 130 Rotation is prevented by the locking force between the protrusion 131 formed on the outer circumferential surface and the guide protrusion 113 of the stay 110.

즉, 아주 저속충돌시에는 이들간의 걸림력만으로 충격 흡수를 도모할 수 있게되는 것이다.That is, in the case of a very low speed collision, shock absorption can be achieved only by the holding force between them.

또한 어느정도 이상의 저속 충돌시에는 연결부재(150) 및 돌기(121)가 걸림홈(121)내의 걸림돌기(122)와 스테이(110)의 가이드 돌기(113)를 파손하는 형태로 회전봉(130)이 회전되게 되어 이를 통해 충격 흡수를 도모할 수 있게되는 것이다.In addition, when the low speed collision to some extent or more, the connecting member 150 and the protrusion 121 breaks the locking protrusion 122 and the guide protrusion 113 of the stay 110 in the locking groove 121, the rotating rod 130 is It will be rotated through which the shock absorption can be achieved.

즉, 회전봉(130)의 일종의 토오션 바(torsion bar)와 같이 비틀림을 통해 충격력을 흡수하게되는 것이다.That is, the torsion bar absorbs the impact force through the torsion bar, like a torsion bar of the rotation bar 130.

이때 고속 충돌시에는 전술한 동작에 의해 완충된 뒤 사이드 멤버(10)에 충격력이 분산 흡수됨으로서 탑승객의 안전을 도모할 수 있게된다.At this time, the impact force is dispersed and absorbed in the side member 10 after being cushioned by the above-described operation at high speed, so that passenger safety can be achieved.

이상과 같이 본 발명은, 범퍼 커버와 사이드 멤버 사이에 개재된 완충수단 즉, 스테이와 회전봉 그리고 빔과 연결부재 등을 통해 범퍼 커버의 상부 또는 하부에 편중된 충돌이 발생될 때 충격력을 완충시킬 수 있게된다.As described above, the present invention can cushion the impact force when a collision that is biased on the upper or lower portion of the bumper cover occurs through the buffer means interposed between the bumper cover and the side member, that is, the stay, the rotating rod, and the beam and the connecting member. Will be.

또한 저속 충돌시에는 사이드 멤버 등의 손상없이 충격 흡수가 가능하여 교환 수리에 따른 경제적인 부담감을 감소시킬 수 있는 이점이 있다.In addition, the low-speed collision can be absorbed without damaging the side member, etc., there is an advantage that can reduce the economic burden of replacement repair.

Claims (3)

차체의 좌,우 하면에 길이 방향으로 나란하게 설치되는 좌,우 사이드 멤버와;Left and right side members installed side by side in the longitudinal direction on the lower left and right sides of the vehicle body; 상기 사이드 멤버의 전방에 위치되며, 내면에 압소버가 개재된 범퍼 커버와;A bumper cover positioned in front of the side member and having an absorber interposed therein; 상기 사이드 멤버와 범퍼 커버 사이에 개재되며, 범퍼 커버에 상부 또는 하부로 편중된 충돌이 발생될 때 비틀림 에너지를 통해 충격을 흡수하는 완충수단;으로 구성된 것을 특징으로 하는 자동차의 범퍼.And a shock absorbing means interposed between the side member and the bumper cover and absorbing a shock through torsional energy when a collision biased upward or downward on the bumper cover occurs. 제 1 항에 있어서, 상기 완충수단은, 좌,우 양측과 전면이 개방되고 후면에는 사이드 멤버에 고정되는 연결대가 연장 형성되며, 일측 상,하면에는 소정폭의 걸림홈이 형성된 스테이와;According to claim 1, The buffer means, the left and right sides and the front is open and the rear side is formed with a connecting rod is fixed to the side member, the upper and lower sides, the stay groove is formed with a predetermined width; 상기 스테이의 전면 상,하 양측면으로 각각 내측으로 연장 형성되며, 중심면에는 좌,우 내면에 걸림돌기가 복수 형성된 걸림홈이 형성된 플랜지와;A flange which is formed to extend inwards to the upper and lower sides of the front of the stay, respectively and has a locking groove having a plurality of locking projections formed on the left and right inner surfaces of the center surface; 상기 스테이에 끼워 삽입되며, 상,하 외주면에는 스테이의 걸림홈에 개재되는 돌기가 형성된 회전봉과;It is inserted into the stay, the upper and lower outer circumference and the rotary bar is formed with a projection interposed in the engaging groove of the stay; 상기 범퍼 커버의 상,하 내측면에 마련되며, 플랜지의 걸림홈과 인접되게 위치되는 연결부재를 통해 회전봉과 연결되는 빔;으로 이루어진 것을 특징으로 하는 자동차의 범퍼.And bumpers provided on upper and lower inner surfaces of the bumper cover and connected to a rotating rod through a connecting member positioned adjacent to the engaging groove of the flange. 제 2 항에 있어서, 상기 스테이의 걸림홈 내면에는 회전봉의 돌기가 끼워 삽입되는 가이드 돌기가 돌출 형성된 것을 특징으로 하는 자동차의 범퍼.The bumper of the vehicle according to claim 2, wherein a guide protrusion into which the protrusion of the rotary bar is inserted is formed on the inner surface of the locking groove of the stay.
KR10-2001-0035201A 2001-06-20 2001-06-20 A bumper of automobile KR100440855B1 (en)

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JPH0761297A (en) * 1993-08-30 1995-03-07 Toyota Motor Corp Structure of absorbing energy applied to automobile bumper
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