JP2002249067A - Strength member - Google Patents
Strength memberInfo
- Publication number
- JP2002249067A JP2002249067A JP2001049669A JP2001049669A JP2002249067A JP 2002249067 A JP2002249067 A JP 2002249067A JP 2001049669 A JP2001049669 A JP 2001049669A JP 2001049669 A JP2001049669 A JP 2001049669A JP 2002249067 A JP2002249067 A JP 2002249067A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- frame
- partition
- strength member
- extruded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は複数の室(中空部即
ちホロー)を有する押出し型材への穿孔、ビード付けを
容易にしかつ軸線方向に圧縮荷重が作用したときの降伏
点応力(初期座屈荷重相当)を下げ、しかも、充分なエ
ネルギー吸収能力を示す強度部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention facilitates drilling and beading of an extruded material having a plurality of chambers (hollows or hollows), and yield stress (initial buckling) when a compressive load is applied in the axial direction. The present invention relates to a strength member that reduces a load (equivalent to a load) and exhibits a sufficient energy absorbing ability.
【0002】[0002]
【従来の技術】複数の室(中空部即ちホロー)を有する
押出型材はその内部に仕切り(リブ)を有し、一般に、
断面形状が、室が2つのダブルホローの日の字、室が3
つのトリプルホローの目の字、室が4つの田の字のもの
が多用されている。このような断面を有するアルミ合金
やスチール製の押出型材は、たとえば、車両の前部のバ
ンパリインフオースと車両の車体側のサイドメンバーと
を連結し(クラッシュボックス相当)、バンパリインフ
オースに衝突時の衝撃荷重が作用したとき、その衝撃力
の車体側への伝達を最小限に抑え、乗員へのショックや
車体の損傷を妨ぐ強度部材として利用される。2. Description of the Related Art An extruded material having a plurality of chambers (hollows or hollows) has a partition (rib) therein, and generally,
The cross-sectional shape is a double-hollow day with two rooms and three rooms.
The character with three triple hollow eyes and the character with four rooms are often used. An aluminum alloy or steel extrusion having such a cross section connects, for example, a bumper reinforcement to a front part of a vehicle and a side member on a vehicle body side of the vehicle (equivalent to a crash box) to form a bumper reinforcement. When an impact load at the time of a collision is applied, the transmission of the impact force to the vehicle body side is minimized, and it is used as a strength member that prevents shock to occupants and damage to the vehicle body.
【0003】前述の如く、強度部材は、その両端を他部
材への取付部として用いかつその長手方向に作用する圧
縮荷重を塑性変形しながら吸収するものである。他部材
への強度部材の取付けのため、強度部材の端部に孔あけ
をするが、押出型材内部の仕切りが孔あけ位置を制限
し、他部材への取付けのためのブラケットと強度部材と
の固定強度に問題を残す。さらに、大きな孔を強度部材
に穿けようとすると、シングルホロー(一つの室)の押
出型材の場合には、内部に治具を入れ、プレス作業で該
大きな孔の加工が可能であるが、複数の室(中空部即ち
ホロー)を有する押出型材にあっては内部の仕切りが大
きな孔あけを不可能にする。As described above, the strength member uses both ends as attachment portions to other members, and absorbs a compressive load acting in the longitudinal direction thereof while plastically deforming the same. In order to attach the strength member to another member, a hole is drilled at the end of the strength member. Leaves problems with fixed strength. Further, when trying to drill a large hole in the strength member, in the case of a single hollow (one chamber) extruded member, a jig is put inside and the large hole can be processed by press work. In an extruded material having a chamber (hollow or hollow), an internal partition makes it impossible to make a large hole.
【0004】特開平5−65076号公報にも開示され
かつ本願の図4に点線で示す如く、複数の室を有する押
出型材に、その長手方向即ち軸方向に圧縮荷重を加える
と、初期座屈荷重に相当する高いピーク値の降伏点応力
A、これにつづく塑性域応力(加えられる荷重を吸収
し、衝撃力等を減衰させる領域)Bを示す。このため、
前述の押出型材を強度部材の一つの応用例としてのクラ
ッシュボックスとして用いた場合、高い値を示す降伏点
応力を乗員が容易に耐え得る低い値の降伏点応力かつ車
体損傷を最小とする降伏点応力に下げ、しかも、高いエ
ネルギー吸収量を確保するため塑性域Bの平均応力値C
を上げることが望まれる。When a compressive load is applied to an extruded material having a plurality of chambers in the longitudinal direction, that is, in the axial direction, as shown in a dotted line in FIG. A yield point stress A having a high peak value corresponding to a load, and a subsequent plastic region stress (a region where the applied load is absorbed and the impact force or the like is attenuated) B are shown. For this reason,
When the aforementioned extruded die is used as a crash box as one application example of a strength member, a low yield stress at which a passenger can easily withstand a high yield stress at a low value and a yield point at which vehicle body damage is minimized. In order to lower the stress and secure a high energy absorption, the average stress C in the plastic region B
It is desired to raise.
【0005】このため、特開平5−65076号公報
は、内部に向かう傾斜部を作るよう仕切りの一部を切除
することを教示する。特開平7−145842号公報は
型材の長さ方向の端部に溝や突条を設けることを、特開
平11−208518号公報は中空型材の軸方向端面を
部分的に切除して荷重が加わる面積を小さくすることを
教示する。[0005] For this reason, Japanese Patent Application Laid-Open No. 5-65076 teaches that a part of a partition is cut off so as to form an inwardly inclined portion. Japanese Unexamined Patent Publication No. Hei 7-145842 discloses that a groove or a ridge is provided at an end in the longitudinal direction of a mold material, and Japanese Unexamined Patent Publication No. Hei 11-208518 discloses that a load is applied by partially cutting off an axial end face of a hollow mold material. Teach to reduce the area.
【0006】従来技術は、低い降伏点応力及び高エネル
ギー吸収量を確保するため、穿孔、切除といった加工手
段を提案するが、先きに述べたように、複数の室(中空
部即ちホロー)を有する押出型材には、このような従来
の加工手段の適用は、加工作業を複雑にして難しくして
おり、実用的でない。しかも、降伏点応力(初期座屈荷
重相当)の下げの度合いが、穿孔や切除の加工精度の影
響を受けバラつくという欠点を示す。[0006] The prior art proposes processing means such as drilling and cutting to secure a low yield point stress and a high energy absorption. However, as described above, a plurality of chambers (hollows or hollows) are formed. It is not practical to apply such conventional processing means to the extruded die material, because the processing operation is complicated and difficult. In addition, there is a disadvantage that the degree of reduction of the yield point stress (corresponding to the initial buckling load) varies depending on the processing accuracy of drilling and cutting.
【0007】[0007]
【発明が解決しようとする課題】本発明は、前述した従
来技術の不具合を解決することを解決すべき課題とす
る。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art.
【0008】[0008]
【課題を解決するための手段】本発明は、前述した課題
を解決するために、中空押出型材の内部に複数の室(中
空部即ちホロー)を作る仕切り(リブ)を圧潰し、中空
押出型材の少なくとも一方の端部をシングルホロー即ち
一つの室とさせる技術的手段を用いる。この手段の採用
は、押出型材の端部への穿孔、ビード付け或いは取付ブ
ラケットの固定を容易にさせる。又、本発明による強度
部材をエネルギー吸収部材として機能させた場合、この
シングルホロー(室)の端部は降伏点応力を下げかつ複
数の室を有する残部が高い平均応力の塑性域を作る働き
をし、これにより、高いエネルギー吸収量を示す。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention crushes a partition (rib) for forming a plurality of chambers (hollow portions or hollows) inside a hollow extruded mold member. The technical means of making at least one end of a single hollow or one chamber. The use of this means facilitates drilling, beading or fixing the mounting bracket to the end of the extrusion. When the strength member according to the present invention functions as an energy absorbing member, the end of the single hollow (chamber) has a function of lowering the yield point stress and the remainder having a plurality of chambers has a function of creating a plastic region having a high average stress. Thus, a high energy absorption is exhibited.
【0009】本発明によれば、枠により作られる中空部
を枠と一体の仕切りにより複数の室に画定する押出型材
からなり、該押出型材の少なくとも一端部の仕切りと枠
との結合部を長手方向に沿って一部剪断し、剪断された
部分の仕切りが該押出型材の内部へと圧漬され該一端部
に一つの室を作っていることを特徴とする強度部材が提
供される。この強度部材の端部は一つの室となっている
ので、枠への孔あけやビード付け作業を常用手段で簡単
に行うことができ、さらに、エネルギー吸収部材として
機能させると、軸方向負荷に対する降伏点応力(初期座
屈荷重相当)を下げるのに有効である。加えて、複数の
室を有する残部が軸方向負荷に対して室の形や数に応じ
た高い平均応力の塑性域を作るのに有効である。According to the present invention, the hollow portion formed by the frame is formed of an extruded member which defines a plurality of chambers by a partition integral with the frame, and the connecting portion between the partition at at least one end of the extruded member and the frame is elongated. A strength member is provided, wherein the strength member is partially sheared along a direction, and a partition of the sheared portion is squeezed into the interior of the extruded shape to form one chamber at the one end. Since the end portion of the strength member is a single chamber, it is possible to easily perform drilling and beading work on the frame by a common means, and furthermore, when functioning as an energy absorbing member, it can withstand an axial load. This is effective for lowering the yield point stress (equivalent to the initial buckling load). In addition, the remainder having a plurality of chambers is effective in creating a plastic region with a high average stress depending on the shape and number of the chambers against an axial load.
【0010】好ましくは、強度部材の端部(一つの室の
部分)が他の部分より先きに長手方向に座屈するよう外
力を作用させる。これにより、エネルギー吸収部材とし
て機能させると、前述した降伏点応力の下げ及びエネル
ギー吸収量の多い塑性域を効率よく作り出すことができ
る。[0010] Preferably, an external force is applied so that an end portion (a portion of one chamber) of the strength member buckles in a longitudinal direction earlier than another portion. Thus, when functioning as an energy absorbing member, it is possible to efficiently create the above-described plastic region where the yield point stress is reduced and the energy absorption amount is large.
【0011】一つの室を作る端部を内方又は外方に折曲
げ、或いは該端部に孔やビードを設ける。これにより他
部材への取付けは容易となり、さらに、エネルギー吸収
部材として機能させると、初期座屈荷重に相当する降伏
点応力の値を初期の値に選定できる。The end forming one chamber is bent inward or outward, or holes or beads are provided at the end. This facilitates attachment to other members, and when functioning as an energy absorbing member, the value of the yield point stress corresponding to the initial buckling load can be selected as the initial value.
【0012】本発明による強度部材は、バンパのリイン
フオースと車体のサイドメンバーとを連結させるクラッ
シュボックスとして効果的なエネルギー吸収能力を示す
エネルギー吸収部材として機能するが、勿論、衝撃等の
エネルギーを吸収することの必要な他の用途ばかりでな
く、車体のフレーム部材としても利用できるものであ
る。The strength member according to the present invention functions as an energy absorbing member exhibiting an effective energy absorbing ability as a crash box connecting the reinforce of the bumper and the side member of the vehicle body, but of course absorbs energy such as impact. It can be used as a frame member of a vehicle body as well as other uses that require the above.
【0013】[0013]
【発明の実施の形態】本発明の強度部材の一つの態様で
あるエネルギー吸収部材の一例を構成するAl合金材の
押出型材1の一部を図1に示す。図示例の型材1は、方
形の枠2内に十字状の仕切り3を一体に成形し、室(中
空部即ちホロー)4を複数作る断面田の字のものである
が、断面形状は図示例に限定されない。室4は3ケの断
面目の字状のもの又は2ケの断面日の字状のものでもよ
い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a part of an extruded aluminum alloy material 1 constituting an example of an energy absorbing member which is one embodiment of a strength member of the present invention. The illustrated example 1 has a cross-sectional shape in which a cross-shaped partition 3 is integrally formed in a rectangular frame 2 to form a plurality of chambers (hollows or hollows) 4. It is not limited to. The chamber 4 may be shaped like three cross sections or shaped like two cross sections.
【0014】押出型材1の外側を金型(図示なし)で囲
い、上方よりポンチ5を下向きに押込むことで、仕切り
3を内部へ圧潰させる。ポンチ5の下向きの動きに応じ
て枠2の内壁面と仕切り3の縁との結合面に剪断力が作
用し、仕切り3の縁が枠2の内壁面から剥離し、仕切り
3は、波形に折り重ね合されながら、押出型材1の内部
へたたまれて収容される。その結果、押出し型材1によ
り図3に示すようにその端部を一つの室6としたエネル
ギー吸収部材7が作られる。図2は仕切り3の一部が波
形に重ね合った状態を上からみた図である。The outside of the extrusion 1 is surrounded by a mold (not shown), and the punch 5 is pushed downward from above, whereby the partition 3 is crushed inward. In response to the downward movement of the punch 5, a shearing force acts on the joint surface between the inner wall surface of the frame 2 and the edge of the partition 3, and the edge of the partition 3 peels off from the inner wall surface of the frame 2. While being folded and folded, it is folded and housed inside the extrusion 1. As a result, as shown in FIG. 3, an energy absorbing member 7 having one end as one chamber 6 is formed by the extruded mold 1. FIG. 2 is a top view of a state where a part of the partition 3 overlaps the waveform.
【0015】断面田の字の中空部を有するJIS規格の
A6063 T5のアルミ合金押出型材(枠2の厚みが1.7m
m,仕切り3の厚みが2.4mm,外形寸法が60×10
0mm)に対して、プレス機により上方より500キログ
ラムから1トン程度の荷重を加え、仕切り3を圧潰させ
た。その結果、図1乃至3に示す深さ30mmの一つの室
6が得られた。[0015] JIS standard having a hollow portion with a cross section
A6063 T5 extruded aluminum alloy material (Frame 2 is 1.7m thick
m, the thickness of the partition 3 is 2.4 mm, and the outer dimensions are 60 × 10
0 mm) from above, a load of about 500 kg to about 1 ton was applied from above to crush the partition 3. As a result, one chamber 6 having a depth of 30 mm shown in FIGS. 1 to 3 was obtained.
【0016】図1乃至3に図示したエネルギー吸収部材
7に対しその軸方向より圧縮荷重を加えると、一つの室
(シングルホロー)6を有する端部が初期座屈変形する
ため、降伏点応力が図4の実線で示されるように従来の
点線で示す値より相当下げられ、さらに次に続く複数の
室4を有する残りの部分の塑性変形が従来とほゞ近似す
る塑性変形領域を作る。このため、高い降伏点応力を示
すことなく、高エネルギー吸収量の確保が可能となる。
押出型材1としてはAl合金材以外の材質のものを用い
ることができる。必要なエネルギー吸収量、降伏点応力
を考慮して押出型材1の断面形状、材質、枠2と仕切り
(リブ)3の厚みを選定すればよい。When a compressive load is applied to the energy absorbing member 7 shown in FIGS. 1 to 3 in the axial direction, the end having one chamber (single hollow) 6 undergoes initial buckling deformation, and the yield point stress is reduced. As shown by the solid line in FIG. 4, the plastic deformation of the remaining portion having the plurality of chambers 4 which is considerably lower than the value shown by the conventional dotted line, and forms a plastic deformation region which is almost similar to the conventional one. For this reason, it is possible to ensure a high energy absorption without showing a high yield point stress.
A material other than the Al alloy material can be used as the extruded material 1. The cross-sectional shape and material of the extruded die 1 and the thickness of the frame 2 and the partition (rib) 3 may be selected in consideration of the necessary energy absorption and yield point stress.
【0017】エネルギー吸収部材7の車両への応用例を
図5に示す。この例はエネルギー吸収部材7をクラッシ
ュボックス8として用いたものである。対のクラッシュ
ボックス8は、車両のフロント部分のバンパリインフオ
ース9の両端に、その前部が固定させられる。クラッシ
ュボックス8の後部は、アッパフレーム及びロアフレー
ムを有する略四角形状のラジエータサポート10の車両
幅方向に延在する左右のブラケット11に当接する。車
両のボディの一部を構成しかつ該ボディの左右の位置か
ら後方へ延在するサイドメンバー13の前端に固定した
ブラケット12にラジエータサポート10のブラケット
11とクラッシュボックス8の後部がボルト止めさせら
れる。FIG. 5 shows an application example of the energy absorbing member 7 to a vehicle. In this example, the energy absorbing member 7 is used as a crash box 8. The front parts of the pair of crash boxes 8 are fixed to both ends of the bumper reinforcement 9 at the front part of the vehicle. The rear portion of the crash box 8 contacts the left and right brackets 11 of the substantially square radiator support 10 having an upper frame and a lower frame, which extend in the vehicle width direction. The bracket 11 of the radiator support 10 and the rear part of the crash box 8 are bolted to a bracket 12 which forms a part of the body of the vehicle and is fixed to a front end of a side member 13 extending rearward from left and right positions of the body. .
【0018】エネルギー吸収部材7を図5に示したクラ
ッシュボックス8として利用した場合の作用を述べる。
車両の衝突等により前方から衝撃力がバンパに加えられ
ると、その衝撃力はバンパリインフオース9からクラッ
シュボックス8に伝達され、次いで、サイドメンバー1
3から車体へと伝達される。この際、本発明の強度部材
としての応用例の一つのクラッシュボックス8はその軸
方向に加えられる負荷により座屈変形して衝撃エネルギ
ーを吸収し、乗員への悪影響及び車体への損傷を最小限
にくい止める働きをする。このときのエネルギー吸収量
は図4の実線に示した通りである。The operation when the energy absorbing member 7 is used as the crash box 8 shown in FIG. 5 will be described.
When an impact force is applied to the bumper from the front due to a vehicle collision or the like, the impact force is transmitted from the bumper reinforcement 9 to the crash box 8 and then to the side member 1.
3 to the vehicle body. At this time, one of the crash boxes 8 applied as a strength member of the present invention absorbs impact energy by buckling deformation due to a load applied in the axial direction, thereby minimizing adverse effects on occupants and damage to the vehicle body. It works hard to stop. The amount of energy absorption at this time is as shown by the solid line in FIG.
【0019】図1乃至3に示したエネルギー吸収部材7
のクラッシュボックス8への転用のための作業について
述べる。図6に示す例は、エネルギー吸収部材7の端部
の一つの室6の部分の枠2に縦方向へ4ケ所(好ましく
は角部)スリット14を入れる。次いで、図7に示すよ
うに、スリット14により区画された4つの片15を外
方に折り曲げ、各片15にビス孔16を穿ける。ビス孔
16を有する各片15は、バンパリインフオース9の前
面の作業孔17を利用して、バンパリインフオース9の
後面にボルト止めされる。スリット14を枠2に入れる
のみで、バンパリインフオース9への取付のための片1
5を作れるので、エネルギー吸収部材7のクラッシュボ
ックス8への応用は容易である。The energy absorbing member 7 shown in FIGS.
The work for diversion to the crash box 8 will be described. In the example shown in FIG. 6, four (preferably corner) slits 14 are formed in the frame 2 of one chamber 6 at the end of the energy absorbing member 7 in the vertical direction. Next, as shown in FIG. 7, the four pieces 15 defined by the slits 14 are bent outward, and a screw hole 16 is formed in each piece 15. Each piece 15 having a screw hole 16 is bolted to the rear surface of the bumper reinforcement 9 by using the work hole 17 on the front surface of the bumper reinforcement 9. Only the slit 14 is inserted into the frame 2 and the piece 1 for attachment to the bumper reinforcement 9
5 can easily be applied to the crash box 8 of the energy absorbing member 7.
【0020】スリット14の深さにより、クラッシュボ
ックス8の端部の一つの室6の容量が決められ、それに
より初期座屈荷重相当の降伏点応力のピーク値が変えら
れる。The depth of the slit 14 determines the capacity of one chamber 6 at the end of the crush box 8, thereby changing the peak value of the yield point stress corresponding to the initial buckling load.
【0021】図8に示す例は、エネルギー吸収部材7の
一つの室6を作る枠2の部分に向い合うU字状の切込み
18を作り、その隣りの向い合う部分19を内方へ折り
込みクラッシュボックス8とするものである。図9に示
すように、クラッシュボックス8の内方に折り込んだ部
分19にビス孔20を穿け、この部分19をバンパリイ
ンフオース9の後面に当接させ、作業孔17とビス孔2
0とを用いて、バンパリインフオース9の後面にクラッ
シュボックス8をボルト止めさせる。この例において
も、切り込み18をエネルギー吸収部材7の端部に入れ
るのみで、バンパリインフオース9の取付の容易なクラ
ッシュボックス8を作ることが可能である。In the example shown in FIG. 8, a U-shaped cut 18 is formed facing the portion of the frame 2 forming one chamber 6 of the energy absorbing member 7, and the adjacent facing portion 19 is folded inward to crash. Box 8. As shown in FIG. 9, a screw hole 20 is made in a portion 19 folded inward of the crash box 8, and this portion 19 is brought into contact with the rear surface of the bumper reinforcement 9, so that the working hole 17 and the screw hole 2 are formed.
Using 0, the crush box 8 is bolted to the rear surface of the bumper reinforcement 9. Also in this example, it is possible to make the crush box 8 in which the bumper reinforcement 9 can be easily mounted only by inserting the cut 18 into the end of the energy absorbing member 7.
【0022】図8と図9に示す例においても、切り込み
18の深さにより一つの室6の容量が決まり、これによ
り初期座屈荷重に対応する降伏点応力のピーク値が選定
できるので、図4の実線で示すエネルギー吸収量が確保
できる。図7と図9に示す例で取付片15,19の曲げ
部のRは50〜10mmとするとよい。8 and 9, the capacity of one chamber 6 is determined by the depth of the cut 18 so that the peak value of the yield point stress corresponding to the initial buckling load can be selected. 4 can secure the amount of energy absorption shown by the solid line. In the examples shown in FIGS. 7 and 9, the radius R of the bent portions of the mounting pieces 15 and 19 is preferably set to 50 to 10 mm.
【0023】図示例では、押出型材1の一端に一つの室
6を設けているが両端に一つの室6を設けても良く、ク
ラッシュボックス8として利用するとき、ラジエータサ
ポート10のブラケット11への取付けのために片15
や内方折り込み部分19を用いることもできる。In the illustrated example, one chamber 6 is provided at one end of the extrusion 1, but one chamber 6 may be provided at both ends. When used as the crash box 8, the radiator support 10 is attached to the bracket 11. 15 pieces for mounting
Alternatively, an inward folded portion 19 can be used.
【0024】図10に示す例は、複数の室を有するバン
パリインフオース9の端部の仕切りを、図1乃至3に示
す手法により圧潰し、一つの室6を作った例である。一
つの室6としたことにより壁部に大きな孔21を、内部
に治具を挿入してプレス作業により穿けることができ
る。この孔21は、クラッシュボックス8の前部をこの
孔21に通し、該前部をバンパリインフオース9の内壁
面に固定させることを可能とする。The example shown in FIG. 10 is an example in which the partition at the end of the bumper reinforcement 9 having a plurality of chambers is crushed by the method shown in FIGS. By using one chamber 6, a large hole 21 can be formed in the wall, and a jig can be inserted into the large hole 21 to perform punching. The hole 21 allows the front part of the crash box 8 to pass through the hole 21 and fix the front part to the inner wall surface of the bumper reinforcement 9.
【0025】図10に示す例は、JIS規格のA7003 T5
のアルミ合金押出型材(枠2の厚みが2.5mm,仕切り
3の厚みが1.2mm,外形寸法が60×100mm)に対
して、プレス機により上方より500キログラムから1
トン程度の荷重を加え、仕切り3を圧潰させたものであ
る。一つの室6の深さは50mmである。The example shown in FIG. 10 is based on A7003 T5 of the JIS standard.
Of an aluminum alloy extruded material (the thickness of the frame 2 is 2.5 mm, the thickness of the partition 3 is 1.2 mm, and the outer dimensions are 60 × 100 mm) from the upper side by a press machine from 500 kg to 1 kg.
The partition 3 is crushed by applying a load of about ton. The depth of one chamber 6 is 50 mm.
【0026】図11に示す例は、根元で折れては困る部
材に対し、設定値以上の荷重が作用したとき、根元部以
外に折れ部を作るものである。この例では、一つの室6
を作る枠2の部分に向い合うビードやノッチ或いは小さ
なスリット22を入れ折れポイントとしたものである。
このように、一つの室6を作る枠2の部分の加工作業が
容易で、しかも、残部では仕切り3により押出型材1の
強度が維持される。In the example shown in FIG. 11, when a load greater than a set value is applied to a member that is difficult to break at the root, a bent portion is formed at a portion other than the root. In this example, one room 6
A bead, a notch, or a small slit 22 facing the portion of the frame 2 for making a fold is formed as a break point.
As described above, the working of the portion of the frame 2 forming one chamber 6 is easy, and the strength of the extruded material 1 is maintained by the partition 3 in the remaining portion.
【図1】複数の室を有する中空押出型材の端部の仕切り
(リブ)への圧潰作業を示す図である。FIG. 1 is a view showing a work of crushing an end portion of a hollow extruded material having a plurality of chambers into a partition (rib).
【図2】圧漬された仕切り(リブ)の平面図である。FIG. 2 is a plan view of a partition (rib) that has been pressed.
【図3】押出型材の端部を一つの室とした例の部分斜視
図である。FIG. 3 is a partial perspective view of an example in which an end of an extruded mold member is formed into one chamber.
【図4】軸方向圧縮荷重と変位(ストローク)との関係
を示すグラフ図である。FIG. 4 is a graph showing a relationship between an axial compressive load and a displacement (stroke).
【図5】車両のフロント部分を示す斜視図である。FIG. 5 is a perspective view showing a front portion of the vehicle.
【図6】枠にスリットを入れた状態を示す斜視図であ
る。FIG. 6 is a perspective view showing a state where a slit is formed in the frame.
【図7】外方へ張出した取付片とバンパリインフオース
とを示す斜視図である。FIG. 7 is a perspective view showing an outwardly protruding mounting piece and a bumper reinforcement;
【図8】枠に切り込みを入れた例を示す斜視図である。FIG. 8 is a perspective view showing an example in which a cut is made in a frame.
【図9】内方へ折曲げた取付片とバンパリインフオース
とを示す斜視図である。FIG. 9 is a perspective view showing a mounting piece bent inward and a bumper reinforcement;
【図10】バンパリインフオースの端部を一つの室とし
た例を示す斜視図である。FIG. 10 is a perspective view showing an example in which the end of the bumper reinforcement is formed into one chamber.
【図11】折れポイントを作る例を示した斜視図であ
る。FIG. 11 is a perspective view showing an example of forming a break point.
1 押出型材 2 枠 3 仕切り 4,6 室 7 エネルギー吸収部材(強度部材) 8 クラッシュボックス 15,19 取付片 16,20 取付孔 DESCRIPTION OF REFERENCE NUMERALS 1 Extrusion member 2 Frame 3 Partition 4, 6 chamber 7 Energy absorbing member (strength member) 8 Crash box 15, 19 Mounting piece 16, 20 Mounting hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 羽田 真一 愛知県刈谷市朝日町2丁目1番地 アイシ ン精機株式会社内 (72)発明者 森 一生 愛知県刈谷市朝日町2丁目1番地 アイシ ン精機株式会社内 (72)発明者 安土 一成 富山県新湊市奈呉の江12番地の3 アイシ ン軽金属株式会社内 (72)発明者 布野 和信 富山県新湊市奈呉の江12番地の3 アイシ ン軽金属株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinichi Haneda 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki Co., Ltd. (72) Inventor Kazuo Mori 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki (72) Inventor Kazunari Azuchi 12 Aisin Light Metal Co., Ltd. at 12 Nagoe, Shinminato City, Toyama Prefecture
Claims (5)
切りにより複数の室に画定する押出型材からなり、該押
出型材の少なくとも一端部の仕切りと枠との結合部を長
手方向に沿って一部剪断し、剪断された部分の仕切りが
該押出型材の内部へと圧漬され該一端部に一つの室を作
っていることを特徴とする強度部材。1. An extruded member for defining a hollow portion formed by a frame into a plurality of chambers by a partition integral with the frame, and a joining portion between at least one end of the extruded member and the frame is formed along a longitudinal direction. A strength member characterized in that a part of the part is sheared, and a partition of the sheared part is pressed into the interior of the extruded mold member to form one chamber at the one end.
入力部を構成し、入力される外力によって該一端部が他
の部分より先きに長手方向に座屈変形する、請求項1記
載の車両用の強度部材。2. An end portion of a frame forming one chamber constitutes an external force input portion, and the input external force causes the one end portion to buckle and deform in a longitudinal direction earlier than other portions. The strength member for a vehicle according to claim 1.
又は外方に折曲げている請求項1記載の強度部材。3. The strength member according to claim 1, wherein one end of the frame forming one chamber is bent inward or outward.
くとも一つの孔又はビードを設けている請求項1記載の
強度部材。4. The strength member according to claim 1, wherein at least one hole or bead is provided at one end of a frame forming one chamber.
両のバンパリインフオースに固定されかつ他端部側が車
両のサイドメンバーに固定される請求項1乃至4のいず
れかに記載の強度部材。5. The vehicle according to claim 1, wherein one end of a frame forming one chamber is fixed to a bumper reinforcement of a vehicle and the other end is fixed to a side member of the vehicle. Strength member.
Priority Applications (1)
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JP2001049669A JP4469096B2 (en) | 2001-02-26 | 2001-02-26 | Strength member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001049669A JP4469096B2 (en) | 2001-02-26 | 2001-02-26 | Strength member |
Publications (2)
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---|---|
JP2002249067A true JP2002249067A (en) | 2002-09-03 |
JP4469096B2 JP4469096B2 (en) | 2010-05-26 |
Family
ID=18910739
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JP2001049669A Expired - Fee Related JP4469096B2 (en) | 2001-02-26 | 2001-02-26 | Strength member |
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