JPS629461B2 - - Google Patents
Info
- Publication number
- JPS629461B2 JPS629461B2 JP9074981A JP9074981A JPS629461B2 JP S629461 B2 JPS629461 B2 JP S629461B2 JP 9074981 A JP9074981 A JP 9074981A JP 9074981 A JP9074981 A JP 9074981A JP S629461 B2 JPS629461 B2 JP S629461B2
- Authority
- JP
- Japan
- Prior art keywords
- bumper
- stay
- mounting structure
- thermal expansion
- vehicle body
- 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
- 230000008602 contraction Effects 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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
-
- 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
- B60R2019/247—Fastening of bumpers' side ends
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【発明の詳細な説明】
この発明は、樹脂製バンパの取付構造に関す
る。従来のこの種のバンパ取付構造としては、フ
ロントバンパを例にとれば、例えば実開昭55−
127645及び実開昭55−47430として第１，２図に
示すものがある。これは、バンパ１のバンパ本体
部１ａとバンパサイド部１ｂを、各長さ方向に設
けた長孔２，３において、車体４のバンパステイ
５とフエンダ６のブラケツト７とに、それぞれ段
付ボルト８で取付けた構造になつている。そし
て、上記段付ボルト８は、バンパ１が熱膨張収縮
したときに、上記バンパステイ５とブラケツト７
の上を滑動できる程度に締付けてある。なお、Ｒ
は前輪である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a resin bumper. As an example of a conventional bumper mounting structure of this type, if we take the front bumper as an example,
There are those shown in Figures 1 and 2 as 127645 and Utility Model Publication No. 55-47430. This is done by inserting stepped bolts 8 into the bumper stay 5 of the vehicle body 4 and the bracket 7 of the fender 6 in the long holes 2 and 3 provided in the longitudinal direction of the bumper body portion 1a and bumper side portion 1b of the bumper 1, respectively. It has a structure in which it is attached. When the bumper 1 undergoes thermal expansion and contraction, the shoulder bolt 8 is connected to the bumper stay 5 and the bracket 7.
It is tightened to the extent that it can slide on top of it. In addition, R
is the front wheel.
ところが、この取付構造は、バンパサイド部１
ｂが短いものにはよいが、第２図のように、バン
パサイド部１ｂを長くしてその後端をフエンダ６
のホイールオープニング部９の口縁９ａに合わせ
た形状のバンパの場合には問題がある。 However, this mounting structure
It is good for those with short b, but as shown in Fig. 2, the bumper side part 1b is lengthened and the rear end is connected to the fender 6.
There is a problem in the case of a bumper having a shape that matches the lip 9a of the wheel opening portion 9.
すなわち、第２図において、バンパ１が熱膨張
すると、バンパサイド部１ｂが伸びてその後端が
ホイールオープニング部９の口縁９ａより矢符
X1方向に移動して二点鎖線位置に突出し、逆に
熱収縮すると矢符X2方向に縮んで破線位置に引
込んでしまい、外観上の見栄えが悪くなるという
問題がある。 That is, in FIG. 2, when the bumper 1 thermally expands, the bumper side portion 1b expands and its rear end extends beyond the mouth edge 9a of the wheel opening portion 9.
If it moves in the X1 direction and protrudes to the position shown by the two-dot chain line, and conversely heat-shrinks, it will shrink in the X2 direction and retract to the position shown by the broken line, resulting in an unsightly appearance.
このような問題を解決したものとしては、第３
図（第１，２図と同一部分に同一符号を付す。）
のように、上記バンパ１におけるバンパサイド部
１ｂを動かないように車体４のブラケツト１０に
固定した構造のものがある。 The third solution to this problem is
Figure (The same parts as in Figures 1 and 2 are given the same reference numerals.)
There is a structure in which the bumper side portion 1b of the bumper 1 is fixed to the bracket 10 of the vehicle body 4 so as not to move.
この構造の場合は、バンパサイド部１ｂの後端
とホイールオープニング部９の口縁９ａにズレを
生じないので、上記問題は解決できる。 In this structure, there is no misalignment between the rear end of the bumper side portion 1b and the edge 9a of the wheel opening portion 9, so the above problem can be solved.
しかし、バンパ１の熱膨張収縮は、長穴２で吸
収できなくなつてバンパ１が変形してしまうとい
う問題がある。 However, there is a problem in that the thermal expansion and contraction of the bumper 1 cannot be absorbed by the elongated holes 2, resulting in deformation of the bumper 1.
つまり、第３図において、バンパ１が熱膨張し
た場合、バンパ本体部１ａの伸びは、その長さ方
向の長穴２によつて吸収できるが、バンパサイド
部１ｂの伸びは、これを吸収する長穴がないので
破線で示すように変形してしまう。また、熱収縮
した場合も、同様の理由で、別のパターンで変形
してしまう。 That is, in FIG. 3, when the bumper 1 thermally expands, the elongation of the bumper main body 1a can be absorbed by the elongated holes 2 in the longitudinal direction, but the elongation of the bumper side parts 1b can absorb this. Since there is no elongated hole, it will be deformed as shown by the broken line. Also, when it is thermally shrunk, it deforms in a different pattern for the same reason.
この発明によるバンパの取付構造は、このよう
な変形の問題を解決することを目的としてなされ
たもので、第４〜６図に示す実施例によつて説明
すると、バンパ１１のバンパサイド部１１ｂは、
ブラケツト１２を介して車体１３のフエンダ１３
ａに固定し、バンパ本体部１１ａは、そのバンパ
本体部１１ａと前記バンパサイド部１１ｂの各長
さ方向Ａ，Ｂにおける熱膨張収縮の合成方向Ｓに
形成した長穴１４において、車体１３のバンパス
テイ１５に段付ボルト１６で取付けたところに特
徴がある。 The bumper mounting structure according to the present invention was made with the aim of solving such deformation problems, and will be explained with reference to the embodiment shown in FIGS. 4 to 6. The bumper side portion 11b of the bumper 11 is ,
Fender 13 of vehicle body 13 via bracket 12
a, and the bumper body 11a is fixed to the bumper stay of the vehicle body 13 in the elongated hole 14 formed in the composite direction S of thermal expansion and contraction in the longitudinal directions A and B of the bumper body 11a and the bumper side portion 11b. The feature is that it is attached to 15 with stepped bolts 16.
ここで、上記合成方向Ｓを、第６図のように、
バンパ本体部１ａの長さ方向Ａに対する角度θで
表わすと、これを次式で示すことができる。 Here, the above-mentioned composite direction S is as shown in FIG.
When expressed as an angle θ with respect to the longitudinal direction A of the bumper main body portion 1a, this can be expressed by the following equation.
θ＝Tan1ｌ２／ｌ１
ただし、l1：バンパ本体部１１ａの中心から長
穴１４までの距離
l2：バンパサイド部１１ｂを固定した
ブラケツト１２から長穴１４まで
の距離
また、長穴１４の寸法d1，d2は、次式で示すこ
とができる。 θ=Tan 1 l 2 /l 1 However, l 1 : Distance from the center of the bumper body part 11a to the elongated hole 14 l 2 : Distance from the bracket 12 to which the bumper side part 11b is fixed to the elongated hole 14 Also, the elongated hole The dimensions d 1 and d 2 of 14 can be expressed by the following formula.
d1＝√２ １＋２ ２＋Ｄ＋（１〜２（mm））
＝√｛・1（H−L）｝２｛・2（H−L）｝＋Ｄ＋（１〜２（mm））
d2＝Ｄ＋（１〜２）
ただし、L1：バンパ本体部１１ａの長さ方向Ａ
における熱膨張収縮量
L2：バンパサイド部１１ｂの長さ方向
Ｂにおける熱膨張収縮量
Ｃ ：バンパ１の熱膨張係数
ＴH：高い温度
ＴL：低い温度
Ｄ ：段付ボルト１６の直径
上記段付ボルト１６は、バンパ１１が熱膨張収
縮したときに、バンパステイ１５の上を滑動して
相対移動できる程度に締付けてある。 d 1 =√ 2 1 + 2 2 +D+ (1 to 2 (mm)) =√{・1 ( H − L )} 2 {・2 ( H − L )}+D+ (1 to 2 (mm)) d 2 =D+(1~2) However, L1 : Length direction A of bumper main body 11a
L 2 : Amount of thermal expansion and contraction in the longitudinal direction B of the bumper side portion 11b C : Thermal expansion coefficient of the bumper 1 T H : High temperature T L : Low temperature D : Diameter of the stepped bolt 16 in the above step The bolts 16 are tightened to such an extent that they can slide on the bumper stay 15 and move relative to each other when the bumper 11 thermally expands and contracts.
なお、上記実施例では、長穴１４をバンパ１１
に設けた場合の例であるが、これをバンパステイ
１５側に設けるようにしてもよい。特に、第７図
のバンパ１７のように、その上部に取付け穴１８
が露出するタイプの場合には、長穴１９をバンパ
ステイ２０側に設けるのがよい。２１はキヤリツ
ジボルトである。 In the above embodiment, the elongated hole 14 is connected to the bumper 11.
Although this is an example in which it is provided on the bumper stay 15 side, it may also be provided on the bumper stay 15 side. In particular, like the bumper 17 in FIG.
In the case of the type in which the bumper stay 20 is exposed, it is preferable to provide the elongated hole 19 on the bumper stay 20 side. 21 is a carriage bolt.
この発明は、このような取付構造になつている
ので、外気温が変化してバンパ１１が熱膨張収縮
しても、長穴１４がバンパ１の熱膨張収縮の合成
方向Ｓに相対移動し、段付ボルト１６によつてそ
の移動を拘束されることはない。第７図の実施例
の場合も同様である。 Since the present invention has such a mounting structure, even if the outside temperature changes and the bumper 11 thermally expands and contracts, the elongated hole 14 moves relatively in the direction S of the resultant thermal expansion and contraction of the bumper 1. Its movement is not restricted by the step bolt 16. The same applies to the embodiment shown in FIG.
上述のように、この発明は、バンパサイド部は
車体のフエンダに固定し、バンパ本体部は、バン
パの熱膨張収縮の合成方向に設けた長穴において
バンパステイに取付ける構造にしたので、バンパ
サイド部の後端と、ホイールオープニング部の口
縁のズレを防止することができると同時に、従来
のようなバンパサイド部を固定することによつて
生ずるバンパの変形を防止することができる。 As described above, in this invention, the bumper side part is fixed to the fender of the vehicle body, and the bumper main body part is attached to the bumper stay through the long hole provided in the direction of synthesis of thermal expansion and contraction of the bumper. It is possible to prevent misalignment between the rear end and the lip of the wheel opening portion, and at the same time, it is possible to prevent deformation of the bumper that would otherwise occur by fixing the bumper side portions as in the prior art.
第１図は従来のバンパの取付構造を示す平面
図、第２図は第１図の要部拡大側面図、第３図は
同じく従来のバンパの取付構造を示す平面図、第
４図はこの発明によるバンパの取付構造を示す平
面図、第５図は第４図の要部拡大断面図、第６図
は第４図における長穴の説明図、第７図はこの発
明の他の実施例を示す要部断面図である。
１１……バンパ、１１ａ……バンパ本体部、１
１ｂ……バンパサイド部、１３……車体、１４…
…長穴、１５……バンパステイ。
Fig. 1 is a plan view showing a conventional bumper mounting structure, Fig. 2 is an enlarged side view of the main part of Fig. 1, Fig. 3 is a plan view showing a conventional bumper mounting structure, and Fig. 4 is a plan view of the conventional bumper mounting structure. FIG. 5 is an enlarged cross-sectional view of the main part of FIG. 4, FIG. 6 is an explanatory diagram of the elongated hole in FIG. 4, and FIG. 7 is another embodiment of the invention. FIG. 11...Bumper, 11a...Bumper main body, 1
1b...Bumper side part, 13...Vehicle body, 14...
...Long hole, 15...Bumper stay.
Claims (1)
バンパサイド部が車体に固定され、バンパ本体部
がバンパステイを介して車体に固定される樹脂製
バンパにおいて、バンパ本体部又はバンパステイ
のいずれか一方に、バンパ本体部とバンパサイド
部の各長さ方向における熱膨張収縮の合成方向に
沿う長孔を設け、かつ前記バンパステイにバンパ
本体部を相対移動可能に取付けたことを特徴とす
る樹脂製バンパの取付構造。1 Consists of a bumper side part and a bumper body part,
In a resin bumper in which the bumper side portion is fixed to the vehicle body and the bumper body portion is fixed to the vehicle body via a bumper stay, each length direction of the bumper body portion and bumper side portion is attached to either the bumper body portion or the bumper stay. A mounting structure for a resin bumper, characterized in that a long hole is provided along the direction of synthesis of thermal expansion and contraction, and a bumper main body is mounted to the bumper stay so as to be relatively movable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9074981A JPS57205252A (en) | 1981-06-15 | 1981-06-15 | Structure for attaching bumper made of resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9074981A JPS57205252A (en) | 1981-06-15 | 1981-06-15 | Structure for attaching bumper made of resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57205252A JPS57205252A (en) | 1982-12-16 |
| JPS629461B2 true JPS629461B2 (en) | 1987-02-28 |
Family
ID=14007241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9074981A Granted JPS57205252A (en) | 1981-06-15 | 1981-06-15 | Structure for attaching bumper made of resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57205252A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0230750U (en) * | 1988-08-23 | 1990-02-27 | ||
| JP4570976B2 (en) * | 2005-02-10 | 2010-10-27 | 富士重工業株式会社 | Bumper skin mounting structure |
| WO2014097765A1 (en) * | 2012-12-21 | 2014-06-26 | 本田技研工業株式会社 | Automobile body structure |
| JP5881117B2 (en) * | 2012-12-25 | 2016-03-09 | 本田技研工業株式会社 | Auto body structure |
-
1981
- 1981-06-15 JP JP9074981A patent/JPS57205252A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57205252A (en) | 1982-12-16 |
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