JPH0326024Y2 - - Google Patents
Info
- Publication number
- JPH0326024Y2 JPH0326024Y2 JP1984026230U JP2623084U JPH0326024Y2 JP H0326024 Y2 JPH0326024 Y2 JP H0326024Y2 JP 1984026230 U JP1984026230 U JP 1984026230U JP 2623084 U JP2623084 U JP 2623084U JP H0326024 Y2 JPH0326024 Y2 JP H0326024Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel tank
- curved
- vehicle
- frame
- cross member
- 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
- 239000002828 fuel tank Substances 0.000 claims description 37
- 238000005452 bending Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は自動車の後部床下に取り付けられた燃
料タンクを、後方からの追突車に対して保護する
燃料タンク保護構造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fuel tank protection structure that protects a fuel tank installed under the rear floor of an automobile from a vehicle colliding from behind.
従来、この種の燃料タンク保護構造としては、
例えば実公昭50−27695公報や実開昭53−24037号
公報に記載のように、車体の後部床下に取り付け
た燃料タンクをフレームで保護したものが知られ
ている。
Conventionally, this type of fuel tank protection structure includes:
For example, as described in Japanese Utility Model Publication No. 50-27695 and Japanese Utility Model Application Publication No. 53-24037, it is known that a fuel tank installed under the rear floor of the vehicle body is protected by a frame.
ところで、オフロード車のように車高の高い車
両においては、第１図のように後部床下に取り付
けた燃料タンク４をフレーム５で保護していて
も、後方から車１が追突すると、この追突車１の
バンパ２が車高の高い被追突車３の燃料タンク４
に干渉する危険性があつた。
By the way, in a vehicle with a high vehicle height such as an off-road vehicle, even if the fuel tank 4 installed under the rear floor is protected by the frame 5 as shown in Fig. 1, if the vehicle 1 collides from behind, this rear-end collision will occur. The bumper 2 of the car 1 is the fuel tank 4 of the rear-ended vehicle 3, which has a high vehicle height.
There was a risk of interference.
この問題は、追突車２のバンパ２がフレーム５
の後端に当たるように、フレーム５を全体的にバ
ンパの位置程度まで低くすれば、解決が可能であ
る。しかしながら、これではフレーム５の間に配
置された燃料タンクも低い位置になり、凹凸のあ
る路面を走行する場合に路面が燃料タンク４に干
渉するおそれがあるという問題がある。 This problem is caused by the fact that the bumper 2 of the rear-ending vehicle 2 is in the frame 5.
This can be solved by lowering the frame 5 as a whole to the level of the bumper so that it hits the rear end of the bumper. However, in this case, the fuel tank disposed between the frames 5 is also located at a low position, and there is a problem that the road surface may interfere with the fuel tank 4 when driving on an uneven road surface.
本考案はかかる従来の問題点に鑑みてなされた
もので、その目的は、燃料タンクをできるだけ高
い位置に保持した状態のまま後方からの追突に対
して燃料タンクを有効に保護できる燃料タンク保
護構造を提供することにある。 The present invention was devised in view of such conventional problems, and its purpose is to provide a fuel tank protection structure that can effectively protect the fuel tank from a rear collision while maintaining the fuel tank at the highest possible position. Our goal is to provide the following.
上記目的を達成するために、本考案は、車体の
後部床下に燃料タンクを取り付けた自動車におい
て、車体の前後方向に延びる左右一対のフレーム
の後部近傍部位を上方へ湾曲させ、この湾曲部の
後部を湾曲部の前部より上方位置で後方へ延長
し、この延長部の間に燃料タンクを配置するとと
もに、延長部の後端部を下方へ屈曲させ、この屈
曲部間を上記燃料タンクの下面とほぼ同等高さに
設けたクロスメンバで連結してなり、上記湾曲部
の耐力を湾曲部より後方部位の耐力より低くした
ものである。
In order to achieve the above object, the present invention, in an automobile in which a fuel tank is installed under the rear floor of the vehicle body, curves upward the rear portion of a pair of left and right frames extending in the longitudinal direction of the vehicle body, and is extended rearward at a position above the front part of the curved part, and the fuel tank is arranged between this extended part, and the rear end of the extended part is bent downward, and the bottom surface of the fuel tank is extended between the bent parts. They are connected by a cross member provided at approximately the same height as the curved portion, and the yield strength of the curved portion is lower than the yield strength of the portion rearward of the curved portion.
オフロード車のように車高の高い車両であつて
も、フレームのクロスメンバが燃料タンクの下面
とほぼ同等の高さに設けられているので、後方か
らの追突車はクロスメンバに衝突し、燃料タンク
への干渉が防止される。
Even if the vehicle is high, such as an off-road vehicle, the cross member of the frame is installed at approximately the same height as the bottom surface of the fuel tank, so a vehicle colliding from behind will collide with the cross member. Interference with the fuel tank is prevented.
また、燃料タンク自体は上方位置にあるフレー
ムの延長部の間に配置されているので、凹凸のあ
る路面を走行する場合でも路面が燃料タンクに干
渉しにくい。 Further, since the fuel tank itself is disposed between the extensions of the frame located at the upper position, the road surface is less likely to interfere with the fuel tank even when driving on an uneven road surface.
さらに、フレームの湾曲部は、後方からの追突
に対して屈曲し、エネルギーを吸収する機能を有
するが、その場合、フレームの湾曲部の後部が湾
曲部の前部より高い位置にあるため、後方からの
追突による衝撃力により湾曲部の後部に上方への
曲げ応力が作用し、湾曲部の後部が上方へ持ち上
がつてしまう恐れがある。ところが、クロスメン
バを設けた屈曲部は上方位置にある延長部より下
方へ屈曲しているので、クロスメンバの位置とフ
レームの湾曲部の前部とのオフセツト量が少な
く、く、湾曲部の後部の持ち上がりを抑制できる
効果がある。 Furthermore, the curved part of the frame has the function of bending and absorbing energy in the event of a rear-end collision; Due to the impact force caused by the rear-end collision, upward bending stress is applied to the rear part of the curved part, and there is a risk that the rear part of the curved part may be lifted upward. However, since the bent part provided with the cross member is bent downward from the extension part located at the upper position, the amount of offset between the position of the cross member and the front part of the curved part of the frame is small; It has the effect of suppressing the lifting of.
第２図、第３図において、１０はオフロード車
のように車高の高い車体、１１は車体１０の前後
方向に延びる左右一対のフレーム、１２は車体１
０の後部床下に取り付けられた燃料タンクであ
る。
In FIGS. 2 and 3, 10 is a high vehicle body like an off-road vehicle, 11 is a pair of left and right frames extending in the longitudinal direction of the vehicle body 10, and 12 is a vehicle body 1.
This is a fuel tank installed under the rear floor of the 0.
上記フレーム１１のリヤアクスルシヤフトの近
傍部位には上方へ湾曲した湾曲部１１ａが設けら
れ、この湾曲部１１ａの後部１１ｂを湾曲部１１
ａの前部１１ｃより上方位置で後方へ延長してあ
る。即ち、湾曲部１１ａの前部１１ｃの高さレベ
ルL1に対して後部１１ｂのレベルL2がやや高い。
延長部（後部）１１ｂの間には上記燃料タンク１
２が配置され、燃料タンク１２の後方の延長部１
１ｂの間が車幅方向の横棒１７で連結されてい
る。延長部１１ｂの後端部には、下方に屈曲した
屈曲部１３が一体形成あるいは溶接固定すること
により設けてあり、これら屈曲部１３間は剛性の
大なるクロスメンバ１４で車幅方向に連結されて
いる。このクロスメンバ１４の地面からの高さは
上記燃料タンク１２の下面とほぼ同等の高さに設
定されており、かつフレーム１１の湾曲部１１ａ
の前部１１ｃの高さレベルL1とほぼ同等高さに
設定されている。 A curved portion 11a curved upward is provided in the vicinity of the rear axle shaft of the frame 11, and a rear portion 11b of this curved portion 11a is connected to the curved portion 11
It extends rearward at a position above the front part 11c of a. That is, the level L2 of the rear portion 11b is slightly higher than the height level L1 of the front portion 11c of the curved portion 11a.
The fuel tank 1 is located between the extension part (rear part) 11b.
2 is arranged and the rear extension 1 of the fuel tank 12
1b are connected by a horizontal bar 17 extending in the vehicle width direction. A downwardly bent bent portion 13 is integrally formed or fixed by welding at the rear end portion of the extension portion 11b, and these bent portions 13 are connected in the vehicle width direction by a highly rigid cross member 14. ing. The height of this cross member 14 from the ground is set to be approximately the same height as the lower surface of the fuel tank 12, and the curved portion 11a of the frame 11
The height is set to be approximately the same as the height level L1 of the front portion 11c.
ここで、第３図のように車体１０の後方より車
１５が追突したとすると、追突車１５のバンパ１
６は上記クロスメンバ１４に当たつてフレーム１
１の下方に入り込むことができず、バンパ１６が
燃料タンク１２に干渉する恐れがなく、安全であ
る。 Here, if the car 15 rear-ends the vehicle body 10 from behind as shown in FIG.
6 corresponds to the above-mentioned cross member 14, and the frame 1
1, and there is no fear that the bumper 16 will interfere with the fuel tank 12, making it safe.
なお、上記構成において、リヤアクスルシヤフ
トと干渉しないように形成されたフレーム１１の
湾曲部１１ａの耐力を、湾曲部１１ａより後方部
位、つまりクロスメンバ１４、屈曲部１３および
延長部１１ｂ等の耐力より低くしておき、後方か
ら車１５が追突したとき、この湾曲部１１ａの変
形を積極的に促進させ、エネルギーを吸収するよ
うにしてもよい。このようにすれば、衝撃力を湾
曲部１１ａで吸収して燃料タンク１２への波及を
少なくできるとともに、燃料タンク１２の設置空
間を安全に確保できるという効果がある。しか
も、追突車１５が衝突するクロスメンバ１４の高
さとフレーム１１の湾曲部１１ａの前部１１ｃの
高さL1とのオフセツト量が小さいので、衝撃力
によつて延長部１１ｂが斜め上方め持ち上がる恐
れが少なく、軸方向への変形のみとなる。そのた
め、燃料タンク１２に及ぼす影響を極力少なくで
きる。 In the above configuration, the yield strength of the curved portion 11a of the frame 11, which is formed so as not to interfere with the rear axle shaft, is lower than the yield strength of the portion rearward of the curved portion 11a, that is, the cross member 14, the bent portion 13, the extension portion 11b, etc. Then, when the vehicle 15 collides from behind, the deformation of the curved portion 11a may be actively promoted to absorb energy. This has the effect that the impact force can be absorbed by the curved portion 11a and its influence on the fuel tank 12 can be reduced, and that the installation space for the fuel tank 12 can be safely secured. Moreover, since the offset amount between the height of the cross member 14 that the rear-end collision vehicle 15 collides with and the height L1 of the front part 11c of the curved part 11a of the frame 11 is small, the extension part 11b is lifted diagonally upward by the impact force. There is little risk of deformation in the axial direction. Therefore, the influence on the fuel tank 12 can be minimized.
以上の説明で明らかなように、本考案によれば
フレームの後端部を下方へ屈曲させ、この屈曲部
間を燃料タンクの下面とほぼ同等高さに設けたク
ロスメンバで連結したので、後方からの追突車は
クロスメンバに当たつて衝止され、燃料タンクと
干渉する心配がない。したがつて、車高の高い車
両であつても、被追突時に燃料タンクの損傷が防
止され、安全である。
As is clear from the above explanation, according to the present invention, the rear end of the frame is bent downward, and the bent parts are connected by a cross member installed at approximately the same height as the bottom surface of the fuel tank. A rear-end vehicle will be stopped by hitting the cross member, so there is no need to worry about it interfering with the fuel tank. Therefore, even if the vehicle has a high vehicle height, damage to the fuel tank is prevented in the event of a rear-end collision, and the vehicle is safe.
また、燃料タンク自体は高い位置にあるフレー
ムの延長部の間に配置されているので、凹凸のあ
る路面を走行する場合でも路面が燃料タンクに干
渉しにくい。 Furthermore, since the fuel tank itself is placed between the extensions of the frame at a high position, the road surface is less likely to interfere with the fuel tank even when driving on an uneven road surface.
さらに、クロスメンバの位置とフレームの湾曲
部の前部との上下方向のオフセツト量が少ないの
で、後方からの追突時に湾曲部の後部の持ち上が
りを抑制でき、燃料タンクに及ぼす影響を少なく
できるという効果がある。 Furthermore, since the amount of vertical offset between the position of the cross member and the front part of the curved part of the frame is small, it is possible to suppress the lifting of the rear part of the curved part in the event of a rear-end collision, which has the effect of reducing the effect on the fuel tank. There is.
第１図は従来例の追突状態を示す説明図、第２
図は本考案にかかる自動車のフレーム構造を示す
後部斜視図、第３図はその側面図である。
１０……車体、１１……フレーム、１１ａ……
湾曲部、１１ｂ……延長部（後部）、１１ｃ……
前部、１２……燃料タンク、１３……屈曲部、１
４……クロスメンバ。
Figure 1 is an explanatory diagram showing a rear-end collision situation in the conventional example;
The figure is a rear perspective view showing the frame structure of an automobile according to the present invention, and FIG. 3 is a side view thereof. 10...Vehicle body, 11...Frame, 11a...
Curved part, 11b... Extension part (rear), 11c...
Front part, 12... Fuel tank, 13... Bent part, 1
4...Cross member.
Claims (1)
車において、車体の前後方向に延びる左右一対の
フレームの後部近傍部位を上方へ湾曲させ、この
湾曲部の後部を湾曲部の前部より上方位置で後方
へ延長し、この延長部の間に燃料タンクを配置す
るとともに、延長部の後端部を下方へ屈曲させ、
この屈曲部間を上記燃料タンクの下面とほぼ同等
高さに設けたクロスメンバで連結してなり、上記
湾曲部の耐力を湾曲部より後方部位の耐力より低
くしたことを特徴とする自動車の燃料タンク保護
構造。 In a car with a fuel tank installed under the floor at the rear of the car body, parts near the rear of a pair of left and right frames extending in the longitudinal direction of the car body are curved upward, and the rear part of this curved part is moved rearward at a position above the front part of the curved part. extending the fuel tank, arranging the fuel tank between the extension parts, and bending the rear end of the extension parts downward;
The bent portions are connected by a cross member provided at approximately the same height as the lower surface of the fuel tank, and the yield strength of the curved portion is lower than the yield strength of a portion rearward of the curved portion. Tank protection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2623084U JPS60137623U (en) | 1984-02-24 | 1984-02-24 | Automotive fuel tank protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2623084U JPS60137623U (en) | 1984-02-24 | 1984-02-24 | Automotive fuel tank protection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60137623U JPS60137623U (en) | 1985-09-12 |
| JPH0326024Y2 true JPH0326024Y2 (en) | 1991-06-05 |
Family
ID=30522041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2623084U Granted JPS60137623U (en) | 1984-02-24 | 1984-02-24 | Automotive fuel tank protection structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60137623U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324037B2 (en) * | 1972-09-11 | 1978-07-18 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597144Y2 (en) * | 1976-08-06 | 1984-03-05 | トヨタ自動車株式会社 | Automotive fuel tank protection frame structure |
| JPS57199173U (en) * | 1981-06-12 | 1982-12-17 |
-
1984
- 1984-02-24 JP JP2623084U patent/JPS60137623U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324037B2 (en) * | 1972-09-11 | 1978-07-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60137623U (en) | 1985-09-12 |
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