JPS6318281Y2 - - Google Patents
Info
- Publication number
- JPS6318281Y2 JPS6318281Y2 JP1982069991U JP6999182U JPS6318281Y2 JP S6318281 Y2 JPS6318281 Y2 JP S6318281Y2 JP 1982069991 U JP1982069991 U JP 1982069991U JP 6999182 U JP6999182 U JP 6999182U JP S6318281 Y2 JPS6318281 Y2 JP S6318281Y2
- Authority
- JP
- Japan
- Prior art keywords
- bumper
- reinforcement
- shock absorber
- face
- bumper face
- 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.)
- Expired
Links
- 238000005192 partition Methods 0.000 claims description 23
- 230000035939 shock Effects 0.000 claims description 22
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Vibration Dampers (AREA)
Description
【考案の詳細な説明】
この考案は車両バンパーの衝撃吸収体に関す
る。[Detailed Description of the Invention] This invention relates to a shock absorber for a vehicle bumper.
従来、車両バンパーの衝撃吸収体としては、衝
撃方向と略平行な互いに交差する複数の隔壁によ
つてハニカム状に成形され、車両バンパー内に配
置される樹脂製のものが提案されている（たとえ
ば実開昭50−134595号）。 Conventionally, a shock absorber for a vehicle bumper has been proposed that is made of resin and is formed into a honeycomb shape by a plurality of intersecting partition walls that are substantially parallel to the impact direction, and is placed inside the vehicle bumper (for example, Utility Model No. 50-134595).
ところで、上記衝撃吸収体は、隔壁の座屈変形
により、車両バンパーに作用する衝撃を吸収する
ものであるが、従来の衝撃吸収体は低温状態で大
きな衝撃が作用すると、隔壁の端面、特に応力が
集中する隔壁の交差部分から割れが発生し易く、
衝撃吸収が十分に行なわれないという不具合があ
る。 By the way, the above-mentioned shock absorber absorbs the shock that acts on the vehicle bumper due to the buckling deformation of the bulkhead.However, when a large shock is applied in a low temperature state, the conventional shock absorber absorbs stress on the end face of the bulkhead, especially when a large shock is applied at low temperature. Cracks are likely to occur at the intersections of bulkheads where
There is a problem in that shock absorption is not sufficient.
この考案は、上記不具合を除去すべくなしたも
ので、断面コ形状のバンパーフエースとレインフ
オースメントとの間に配置され、衝撃方向と略平
行な隔壁を有するハニカム状の樹脂製衝撃吸収体
の上記隔壁の上記バンパーフエースの縦面に近接
する端面と、上記レインフオースメントに近接す
る端面に、上記両端面をつなぐ上記隔壁の中間部
分と比して厚肉の厚肉部を形成することにより、
隔壁の端面からの割れの発生を防止し得る車両バ
ンパーの衝撃吸収体を提供することを目的として
いる。 This invention was made to eliminate the above-mentioned problems, and is a honeycomb-shaped resin shock absorber that is placed between a bumper face with a U-shaped cross section and a reinforcement, and has a partition wall that is approximately parallel to the impact direction. By forming a thick wall portion on an end surface of the partition wall that is close to the vertical surface of the bumper face and an end surface that is near the reinforcement, which is thicker than a middle portion of the partition wall that connects both end surfaces. ,
It is an object of the present invention to provide a shock absorber for a vehicle bumper that can prevent cracks from occurring from the end face of a partition wall.
以下、この考案を図示の実施例により詳細に説
明する。 This invention will be explained in detail below with reference to illustrated embodiments.
第１，２図において、１は断面コ形状の樹脂製
バンパーフエースである。このバンパーフエース
１内には、断面長方形状の金属製レインフオース
メント２を嵌め込み、このレインフオースメント
２の上面２ａと下面２ｂとにバンパーフエース１
の上部１ａと下部１ｂを第２図に示すようにボル
ト３，４で夫々固定している。上記レインフオー
スメント２の前面２ｃとバンパーフエース１との
間の空間には、底部５ａを有するハニカム状のポ
リエチレン等の樹脂製衝撃吸収体５を配置し、こ
の衝撃吸収体５の底部５ａをボルト・ナツト６，
６でレインフオースメント２の前面２ｃに固定し
ている。 In FIGS. 1 and 2, 1 is a resin bumper face having a U-shaped cross section. A metal reinforcement 2 having a rectangular cross section is fitted into the bumper face 1, and the bumper face 1 is attached to the upper surface 2a and lower surface 2b of this reinforcement 2.
The upper part 1a and the lower part 1b are fixed with bolts 3 and 4, respectively, as shown in FIG. In the space between the front surface 2c of the reinforcement 2 and the bumper face 1, a honeycomb-shaped shock absorber 5 made of resin such as polyethylene is arranged, and the bottom 5a of the shock absorber 5 is connected with bolts.・Natsuto 6,
6 is fixed to the front surface 2c of the reinforcement 2.
上記衝撃吸収体５は、バンパーフエース１の前
面すなわち縦面１ｃに直交する矢印Ａに示す衝撃
方向に略平行な複数の隔壁５ｂ，５ｂ，…を第１
図に示すように互いに交差させており、ハニカム
形状になつている。上記隔壁５ｂ，５ｂ，…は第
２，３図に示すように、樹脂成形における型抜き
勾配のために、底部５ａから先端に向けて先細に
なつているが、隔壁５ｂ，５ｂ，…の上記バンパ
ーフエース１の縦面１ｃに近接する端面には隔壁
５ｂ，５ｂ，…の中間部分の厚さよりも厚い厚肉
部８，８，…を備えている。また、隔壁５ｂ，５
ｂ…の底部５ａに連続する側には、隔壁５の中間
部分の厚さよりも厚い厚肉部８′が形成されてい
る。 The above-mentioned shock absorber 5 has a plurality of partition walls 5b, 5b, .
As shown in the figure, they cross each other, forming a honeycomb shape. As shown in FIGS. 2 and 3, the partition walls 5b, 5b, ... are tapered from the bottom part 5a toward the tip due to the mold cutting slope in resin molding. The end face of the bumper face 1 close to the vertical face 1c is provided with thick parts 8, 8, . . . which are thicker than the intermediate portions of the partition walls 5b, 5b, . Moreover, the partition walls 5b, 5
A thick portion 8', which is thicker than the middle portion of the partition wall 5, is formed on the side continuous to the bottom portion 5a of b.
上記厚肉部８，８…はたとえば第４，５図に示
すようにして形成する。すなわち、第４図に示す
ように、金型（図示せず）から取り出した成形後
の衝撃吸収体５の隔壁５ｂ，５ｂ…の先端の端面
に加熱板１１を接近させて、隔壁５ｂ，５ｂ…の
先端部をたとえば500℃〜800℃で溶融させた後
に、凝固させて、第５図に示すように厚肉部８，
８…を形成する。 The thick portions 8, 8, . . . are formed, for example, as shown in FIGS. 4 and 5. That is, as shown in FIG. 4, the heating plate 11 is brought close to the end surface of the tip of the partition walls 5b, 5b... of the molded shock absorber 5 taken out from the mold (not shown), and the partition walls 5b, 5b are ... is melted at, for example, 500°C to 800°C, and then solidified, as shown in FIG.
Form 8...
上記厚肉部８，８…；８′，８′，…は第１，３
図に示すように、夫々一連に連らなり、交差部１
２，１２′にも厚肉部１３；１３′が形成されてい
る。 The thick parts 8, 8...; 8', 8',... are the first and third thick parts.
As shown in the figure, they are connected in series, and the intersection 1
Thick wall portions 13; 13' are also formed at 2 and 12'.
なお、レインフオースメント２は図示しない
が、取付部材を介して車体に取り付けている。 Although not shown, the reinforcement 2 is attached to the vehicle body via an attachment member.
上記構成の車両バンパーの衝撃吸収体５は、断
面コ形状のバンパーフエース１に第２図中矢印Ａ
の方向に衝撃が作用して、バンパーフエース１の
縦面部１ｃが矢印Ａ方向に変形すると、そのバン
パーフエース１の縦面部１ｃに押圧されて隔壁５
ｂ，５ｂ…が座屈変形し、衝撃を吸収する。 The impact absorbing body 5 of the vehicle bumper having the above structure is attached to the bumper face 1 having a U-shaped cross section as indicated by the arrow A in FIG.
When the vertical surface portion 1c of the bumper face 1 is deformed in the direction of arrow A due to the impact acting in the direction, the partition wall 5 is pressed by the vertical surface portion 1c of the bumper face 1.
b, 5b... undergo buckling deformation and absorb the impact.
このとき、上記衝撃吸収体５の両端面には、厚
肉部８，１３，…；８′，１３′…を形成している
ため、割れやすい端面において、応力が分散し
て、衝撃吸収体５に割れが生じることが防止でき
る。特に、上記隔壁５ｂ，５ｂ，…の交差部に
は、厚肉部１３；１３′が存するため、応力集中
が生ぜず、交差部１２；１２′から割れが生じる
ことはない。したがつて、衝撃を受けたとき隔壁
５ｂ，５ｂ，…を座屈変形させることができ、衝
撃吸収能力が向上する。 At this time, since the thick portions 8, 13, . . . ; 8', 13', . 5 can be prevented from cracking. In particular, since the thick portions 13; 13' exist at the intersections of the partition walls 5b, 5b, . . . , stress concentration does not occur and cracks do not occur at the intersections 12; 12'. Therefore, when receiving an impact, the partition walls 5b, 5b, . . . can be buckled and deformed, and the impact absorption ability is improved.
また、上記バンパーフエース１の縦面１ｃと衝
撃吸収体５の厚肉部８，１３とが衝撃のために互
いに当接した際に、上記厚肉部８，１３のバンパ
ーフエース１に対する接触面積が大きいため、バ
ンパーフエース１に大きな剪断応力が作用するこ
とがなく、したがつて、バンパーフエース１に割
れが生じにくい。 Further, when the vertical surface 1c of the bumper face 1 and the thick parts 8, 13 of the shock absorber 5 come into contact with each other due to an impact, the contact area of the thick parts 8, 13 with the bumper face 1 is Since it is large, large shearing stress does not act on the bumper face 1, and therefore, the bumper face 1 is less likely to crack.
上記実施例の衝撃吸収体５は底部５ａを備える
ものであるが、第６図に示す変形例は底部を備え
ていないものである。この第６図に示す変形例に
おいても、肉厚部８′に加えて隔壁５ｂの型抜き
勾配のために薄くなつている側の端面、つまり割
れやすい側の端面に厚肉部５を形成している。 The shock absorber 5 of the above embodiment is provided with a bottom portion 5a, but the modified example shown in FIG. 6 is not provided with a bottom portion. Also in the modification shown in FIG. 6, in addition to the thick part 8', the thick part 5 is formed on the end face of the partition wall 5b that is thinner due to the drafting slope, that is, on the end face of the side that is more likely to break. ing.
以上の説明で明らかなように、衝撃方向と略平
行な互いに交差する複数の隔壁によつてハニカム
状に成形され、断面コ形状のバンパーフエースと
レインフオースメントとの間に配置される樹脂製
の衝撃吸収体上記隔壁の上記バンパーフエースの
縦面に近接する端面と、上記レインフオースメン
トに近接する端面に、上記両端面をつなぐ上記隔
壁の中間部分と比して厚肉の厚肉部を形成してい
るので、最小限の重量アツプで、上記両端面の厚
肉部により応力が分散されて、該端面より割れが
発生することが防止され、衝撃吸収体の割れを完
全に防止できる。 As is clear from the above explanation, the resin-made bumper face is formed into a honeycomb shape by a plurality of intersecting partition walls that are substantially parallel to the impact direction, and is placed between the bumper face and the reinforcement, which have a U-shaped cross section. A thick wall portion that is thicker than an intermediate portion of the partition wall that connects both end surfaces is formed on an end surface of the shock absorber partition wall that is close to the vertical surface of the bumper face and an end surface that is near the reinforcement. Therefore, with a minimum increase in weight, stress is dispersed by the thick portions on both end faces, preventing cracks from occurring from the end faces, and cracking of the shock absorber can be completely prevented.
第１，２，３，４，５図はこの考案の一実施例
を示し、第１図は分解斜視図、第２図は断面図、
第３図は要部斜視図、第４，５図は厚肉部を成形
する方法を説明する図、第６図は変形例の要部断
面図である。
１……バンパーフエース、２……レインフオー
スメント、５……衝撃吸収体、５ｂ……隔壁、
８，１３；８′１３′……厚肉部。
Figures 1, 2, 3, 4, and 5 show an embodiment of this invention, with Figure 1 being an exploded perspective view and Figure 2 being a sectional view.
FIG. 3 is a perspective view of a main part, FIGS. 4 and 5 are diagrams for explaining a method of forming a thick part, and FIG. 6 is a sectional view of a main part of a modified example. 1... Bumper face, 2... Reinforcement, 5... Shock absorber, 5b... Bulkhead,
8, 13; 8'13'...Thick walled part.
Claims (1)
によつてハニカム状に成形され、断面コ形状のバ
ンパーフエースとレインフオースメントとの間に
配置される樹脂製の衝撃吸収体において、 上記複数の隔壁各々の上記バンパーフエースの
縦面に近接する端面と、該端面と反対側の上記レ
インフオースメントに近接する上記隔壁の端面に
上記両端面をつなぐ上記隔壁の中間部分と比して
厚肉の厚肉部を形成してなることを特徴とする車
両バンパーの衝撃吸収体。[Claims for Utility Model Registration] A resin shock that is formed into a honeycomb shape by a plurality of intersecting partition walls that are substantially parallel to the direction of the shock, and is arranged between a bumper face with a U-shaped cross section and reinforcement. In the absorbent body, an intermediate portion of the partition wall that connects an end surface of each of the plurality of partition walls that is close to the longitudinal surface of the bumper face, and both end surfaces of the partition wall that is close to the reinforcement on the opposite side of the end surface. A shock absorber for a vehicle bumper, characterized by forming a thick walled part that is thicker than that of a vehicle bumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6999182U JPS58170250U (en) | 1982-05-12 | 1982-05-12 | Shock absorber for vehicle bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6999182U JPS58170250U (en) | 1982-05-12 | 1982-05-12 | Shock absorber for vehicle bumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58170250U JPS58170250U (en) | 1983-11-14 |
| JPS6318281Y2 true JPS6318281Y2 (en) | 1988-05-23 |
Family
ID=30079689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6999182U Granted JPS58170250U (en) | 1982-05-12 | 1982-05-12 | Shock absorber for vehicle bumper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58170250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004101323A1 (en) * | 2003-05-14 | 2004-11-25 | Kyoraku Co., Ltd. | Shock absorber of car |
| CN100351121C (en) * | 2003-05-14 | 2007-11-28 | 京洛株式会社 | Shock absorber of car |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10149121B4 (en) * | 2001-10-05 | 2007-02-08 | Daimlerchrysler Ag | Energy absorbing bumper |
| JP2008001204A (en) * | 2006-06-21 | 2008-01-10 | Futaba Industrial Co Ltd | Bumper for vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56164853U (en) * | 1980-05-12 | 1981-12-07 | ||
| JPS58150550U (en) * | 1982-04-02 | 1983-10-08 | 大協株式会社 | Honeycomb structure of shock absorbing bumper for automobiles |
-
1982
- 1982-05-12 JP JP6999182U patent/JPS58170250U/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004101323A1 (en) * | 2003-05-14 | 2004-11-25 | Kyoraku Co., Ltd. | Shock absorber of car |
| JPWO2004101323A1 (en) * | 2003-05-14 | 2006-07-13 | キョーラク株式会社 | Automotive shock absorber |
| CN100351121C (en) * | 2003-05-14 | 2007-11-28 | 京洛株式会社 | Shock absorber of car |
| US7370893B2 (en) | 2003-05-14 | 2008-05-13 | Kyoraku Co., Ltd. | Impact absorbing member for motor vehicle |
| JP4554515B2 (en) * | 2003-05-14 | 2010-09-29 | キョーラク株式会社 | Automotive shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58170250U (en) | 1983-11-14 |
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