JP3566084B2 - Fuel tank protection structure - Google Patents

Fuel tank protection structure Download PDF

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Publication number
JP3566084B2
JP3566084B2 JP18370198A JP18370198A JP3566084B2 JP 3566084 B2 JP3566084 B2 JP 3566084B2 JP 18370198 A JP18370198 A JP 18370198A JP 18370198 A JP18370198 A JP 18370198A JP 3566084 B2 JP3566084 B2 JP 3566084B2
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JP
Japan
Prior art keywords
protector
fuel tank
appropriate
discharge passage
seam flange
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 - Fee Related
Application number
JP18370198A
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Japanese (ja)
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JP2000016096A (en
Inventor
健 三宅
健 小坂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daihatsu Motor Co Ltd
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Daihatsu Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP18370198A priority Critical patent/JP3566084B2/en
Publication of JP2000016096A publication Critical patent/JP2000016096A/en
Application granted granted Critical
Publication of JP3566084B2 publication Critical patent/JP3566084B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は、自動車の車体底部に配置された燃料タンクに対してタイヤではね上げられた路面の小石等が直接当たるのを防止するための燃料タンクの保護構造に関するものである。
【0002】
【従来の技術】
従来から、タイヤではね上げられた路面の小石等が燃料タンクに直接当たるのを防止するために、例えば特開平10−016575公報等に開示されているように、燃料タンクの前方部にその外面との間に適当な隙間をあけて合成樹脂製や金属板製のプロテクタを取付けたものは知られている。
【0003】
その種の燃料タンクの保護構造の従来例を図4〜図6を参照して説明する。図4に示すように、燃料タンク11の前方部の適所にその外面との間に適当な隙間をあけてプロテクタ13が配設されている。このプロテクタ13の上部には、図5に示すように、断面略つ字状の取付用突出部14が形成されており、この取付用突出部14の上壁14aの下面を燃料タンク11のシームフランジ12の上面に当接させ、突出部上壁14aとシームフランジ12の適当箇所を、図6に示すように、ボルト・ナット15にて締結することにより、燃料タンク11にプロテクタ13が装着されている。なお、上記締結部においては、切欠部16によって突出部上壁14aを残して取付用突出部14の下部を除去し、ボルト・ナット15にて締結できるように構成されている。また、プロテクタ13の締結部にはシームフランジ12を挟持してプロテクタ13を仮止めする仮止め金具17が設けられている。
【0004】
【発明が解決しようとする課題】
ところが、上記従来の構成では、図5、図6に矢印Eで示すように、プロテクタ13の上部と燃料タンク11の上部外面との間に設けられた隙間18に、タイヤにてはね上げられた泥や水等が侵入し、そのまま排出されずにシームフランジ12上の溜まったままになる恐れがあり、そのためシームフランジ12上面に錆が発生し、最悪の場合にはプロテクタ13の脱落や燃料漏れなどを生じる恐れがあるという問題があった。
【0005】
本発明は、上記従来の問題点に鑑み、燃料タンク上部外面とプロテクタの間の隙間に泥や水が侵入しても円滑に排出されて錆の発生を抑制できる燃料タンクの保護構造を提供することを目的とする。
【0006】
【課題を解決するための手段】
本発明の燃料タンクの保護構造は、燃料タンクの前方部の適所にその外面との間に適当な隙間をあけてプロテクタを配置するとともに、このプロテクタの上端より適当距離下方位置に形成した断面略つ字状の取付用突出部の上壁下面を燃料タンクのシームフランジ上に当接させて適当箇所をボルト固定し、かつ取付用突出部の適当箇所にシームフランジの上面上から外縁の外側を通る排出通路を形成するように上下方向のビードを突出形成したものであり、タイヤにてはね上げられた泥や水等がプロテクタの上部と燃料タンク上部外面との間の隙間に侵入しても、プロテクタに形成したビードにて形成された排出通路を通ってシームフランジの下方の隙間に流下して円滑に排出され、シームフランジ上面の錆の発生を抑制することができ、さらにビードにてプロテクタ自体の剛性も向上する。
【0007】
また、プロテクタの取付用突出部の上部の適当範囲にわたって排出通路の上端部に連通するように膨出部を形成しており、これによりビードによる排出通路から離れた部分に侵入した泥や水等も膨出部を通って排出通路に案内され、より円滑に排出できて錆の発生を抑制できる。
【0008】
【発明の実施の形態】
以下、本発明の燃料タンクの保護構造の一実施形態について、図1〜図3及び図6を参照して説明する。
【0009】
図1において、1は燃料タンクで、下部容器1aと上部容器蓋1bを外周のシームフランジ2にて一体接合して構成されている。図1の白抜き矢印Fで示す方向が前方であり、燃料タンク1の前方部の適所、図示例では前部の左側側面に、合成樹脂製のプロテクタ3が装着されている。即ち、本実施形態の燃料タンク1は車体底部の左側部に配置されており、左前輪のタイヤではね上げられた小石や泥等が燃料タンク1の左側面前部に当たる可能性があるため、この部分にプロテクタ3が配設されている。
【0010】
プロテクタ3は、図2、図3に示すように、小石等が当たったときの衝撃を吸収して燃料タンク1に直接衝撃が伝わらないように燃料タンク1の外面との間に適当な隙間4をあけて配置されている。そのため、プロテクタ3の上端から適当距離下方位置に断面略つ字状の取付用突出部5が形成され、その上壁5aの下面が燃料タンク1のシームフランジ2上に当接され、その前後両端部の適当箇所が従来例で説明した図6に示すように、ボルト・ナット15にて締結固定されている。
【0011】
取付用突出部5には、図1、図2に示すように、シームフランジ2の上面上から外縁の外側を通る排出通路7を形成するように上下方向のビード6が前後両端間に適当間隔おきに複数形成されている。さらに、プロテクタ3の取付用突出部5の上部には、図1〜図3に示すように、前後両端部を除く適当範囲にわたって排出通路7の上端部に連通するように膨出部8が形成されている。さらに、取付用突出部5の下部においても前後両端部及び下端部を除いて外側に膨出する下部膨出部9が形成されている。
【0012】
以上の構成によれば、燃料タンク1の前方部の適所にその外面との間に適当な隙間4をあけてプロテクタ3が配設されているので、前輪のタイヤではね上げられた小石や泥などが燃料タンク1に向けて飛んできても、燃料タンク1に直接当たることはなくプロテクタ3に当たり、プロテクタ3の撓みによって衝撃が吸収されることによって燃料タンク1が保護される。
【0013】
また、タイヤではね上げられた泥や水の一部がプロテクタ3の上端と燃料タンク1の上部外面の間から矢印Eで示すようにプロテクタ3と燃料タンク1の間の隙間4に侵入することがあるが、侵入した泥や水は図2に矢印Gで示すようにビード6にて形成された排出通路7を通ってシームフランジ2の下方に流下して矢印Hで示すようにプロテクタ3の下端から円滑に排出されるため、シームフランジ2上に溜まったままになってシームフランジ2の上面の錆の発生するのを抑制することができる。さらに、プロテクタ3にビード6を形成したことによってプロテクタ3自体の剛性も向上する。
【0014】
更に、プロテクタ3の取付用突出部4の上部の適当範囲にわたって排出通路7の上端部に連通するように膨出部8を形成しているので、ビード6による排出通路7から離れた部分に侵入した泥や水等もこの膨出部8を通って排出通路7に案内されて円滑に排出され、より確実に錆の発生を抑制することができる。
【0015】
また、プロテクタ3の取付用突出部4の上部と下部に周縁部を除いて膨出部8と下部膨出部9を形成しているので、ビード6と相まってプロテクタ3の表面の面剛性を高くすることができ、プロテクタ3を肉厚にすることなく保護性能を向上することができる。
【0016】
なお、上記実施形態では、プロテクタ3として合成樹脂製のものを例示したが、金属板等で構成してもよいことは言うまでもない。また、燃料タンク1に対するプロテクタ3の配設箇所や配設範囲は、車体に対する燃料タンク1の配設位置に応じて適宜に設定され、上記実施形態に限定されるものでないことも詳しく説明するまでもない。
【0017】
【発明の効果】
本発明の燃料タンクの保護構造によれば、以上のようにプロテクタの上端から適当距離下方位置に形成した断面略つ字状の取付用突出部の上壁下面を燃料タンクのシームフランジ上に当接させて適当箇所をボルト固定し、かつ取付用突出部の適当箇所にシームフランジの上面上から外縁の外側を通る排出通路を形成するように上下方向のビードを形成したので、タイヤにてはね上げられた泥や水等がプロテクタの上部と燃料タンク上部外面との間の隙間に侵入しても、ビードにて形成された排出通路を通ってシームフランジの下方の隙間に流下して円滑に排出され、シームフランジ上面の錆の発生を抑制することができ、さらにビードにてプロテクタ自体の剛性も向上するという効果が得られる。
【0018】
また、プロテクタの取付用突出部の上部の適当範囲にわたって排出通路の上端部に連通するように膨出部を形成しているので、ビードによる排出通路から離れた部分に侵入した泥や水等も膨出部を通って排出通路に案内され、より円滑に排出できて錆の発生を抑制できるという効果が得られる。
【図面の簡単な説明】
【図1】本発明の燃料タンクの保護構造の一実施形態の全体斜視図である。
【図2】図1のA−A矢視部分拡大断面図である。
【図3】図1のB−B矢視部分拡大断面図である。
【図4】従来例の燃料タンクの保護構造の全体斜視図である。
【図5】図4のC−C矢視部分拡大断面図である。
【図6】図4のD−D矢視部分拡大断面図である。
【符号の説明】
1 燃料タンク
2 シームフランジ
3 プロテクタ
4 隙間
5 取付用突出部
5a 上壁
6 ビード
7 排出通路
8 膨出部
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank protection structure for preventing a pebble or the like on a road surface, which has been flipped up by a tire, from directly hitting a fuel tank disposed at the bottom of a vehicle body of an automobile.
[0002]
[Prior art]
Conventionally, in order to prevent pebbles and the like on the road surface that has been flipped up by the tire from directly hitting the fuel tank, for example, as disclosed in Japanese Patent Application Laid-Open No. 10-016575, the front surface of the fuel tank has It is known that a protector made of a synthetic resin or a metal plate is attached with an appropriate gap between them.
[0003]
A conventional example of such a fuel tank protection structure will be described with reference to FIGS. As shown in FIG. 4, a protector 13 is provided at an appropriate position in the front part of the fuel tank 11 with an appropriate gap between the protector 13 and the outer surface thereof. As shown in FIG. 5, a mounting protrusion 14 having a substantially rectangular cross section is formed on the upper part of the protector 13, and the lower surface of the upper wall 14a of the mounting protrusion 14 is connected to the seam of the fuel tank 11. The protector 13 is mounted on the fuel tank 11 by being brought into contact with the upper surface of the flange 12 and fastening the upper portion 14a of the projecting portion and an appropriate portion of the seam flange 12 with bolts and nuts 15 as shown in FIG. ing. The fastening portion is configured such that the lower portion of the mounting projection 14 is removed with the notch 16 leaving the projection upper wall 14a, and the bolt and nut 15 can be used for fastening. In addition, a temporary fixing member 17 for temporarily fixing the protector 13 by sandwiching the seam flange 12 is provided at a fastening portion of the protector 13.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, as shown by an arrow E in FIGS. 5 and 6, the mud thrown up by the tire is inserted into the gap 18 provided between the upper portion of the protector 13 and the upper outer surface of the fuel tank 11. Water, etc., may enter and remain on the seam flange 12 without being discharged as it is. Therefore, rust is generated on the upper surface of the seam flange 12, and in the worst case, the protector 13 may fall off or the fuel may leak. There is a problem that there is a risk of generating.
[0005]
The present invention has been made in view of the above-mentioned conventional problems, and provides a fuel tank protection structure that can smoothly discharge mud and water even when mud or water enters a gap between an upper outer surface of a fuel tank and a protector and suppress generation of rust. The purpose is to:
[0006]
[Means for Solving the Problems]
The protective structure for a fuel tank according to the present invention has a protector disposed at an appropriate position in front of the fuel tank with an appropriate gap between the protector and the outer surface thereof, and a cross-sectional shape formed at a position below the upper end of the protector by an appropriate distance. The lower surface of the upper wall of the U-shaped mounting protrusion is brought into contact with the seam flange of the fuel tank, and an appropriate portion is bolted, and the outer portion of the outer edge from the upper surface of the seam flange is fixed to the appropriate portion of the mounting protrusion. The bead in the vertical direction protrudes to form a discharge passage that passes through, even if mud or water splashed up by the tire enters the gap between the upper part of the protector and the outer surface of the fuel tank upper part, It flows down to the gap below the seam flange through the discharge passage formed by the bead formed in the protector, and is smoothly discharged, thereby suppressing the generation of rust on the upper surface of the seam flange. Rigidity of the protector itself is also improved by the bead.
[0007]
Moreover, it forms a bulging portion so as to communicate with the upper end of the discharge passage over a reasonable range of the upper part of the mounting projecting portion of the protector, thereby entering the distant portion from the discharge passage by bead mud, water, and the like Is also guided to the discharge passage through the bulging portion, and can be discharged more smoothly, so that generation of rust can be suppressed.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the fuel tank protection structure of the present invention will be described below with reference to FIGS.
[0009]
In FIG. 1, reference numeral 1 denotes a fuel tank, which is formed by integrally joining a lower container 1a and an upper container lid 1b with a peripheral seam flange 2. A direction indicated by a white arrow F in FIG. 1 is the front, and a protector 3 made of a synthetic resin is mounted at an appropriate position in the front part of the fuel tank 1, in the illustrated example, on the left side surface of the front part. That is, the fuel tank 1 of the present embodiment is disposed on the left side of the bottom of the vehicle body, and pebbles, mud, etc., which have been thrown up by the tire of the left front wheel, may hit the front part on the left side of the fuel tank 1. Is provided with a protector 3.
[0010]
As shown in FIGS. 2 and 3, the protector 3 has an appropriate gap 4 between itself and the outer surface of the fuel tank 1 so as to absorb the impact when pebbles or the like hit and prevent the impact from being directly transmitted to the fuel tank 1. It is arranged with a gap. For this reason, a mounting protrusion 5 having a substantially rectangular cross section is formed at a position below the upper end of the protector 3 by an appropriate distance, and the lower surface of the upper wall 5a is brought into contact with the seam flange 2 of the fuel tank 1 and the front and rear ends thereof Appropriate portions of the parts are fastened and fixed with bolts and nuts 15 as shown in FIG.
[0011]
As shown in FIGS. 1 and 2, a vertical bead 6 is provided between the front and rear ends of the mounting projection 5 so as to form a discharge passage 7 that passes from the upper surface of the seam flange 2 to the outside of the outer edge. A plurality is formed every other. Further, as shown in FIGS. 1 to 3, a bulging portion 8 is formed on the upper part of the mounting protrusion 5 of the protector 3 so as to communicate with the upper end of the discharge passage 7 over an appropriate range excluding the front and rear ends. Have been. Further, a lower swelling portion 9 swelling outward except for both front and rear ends and a lower end portion is formed below the mounting protrusion 5.
[0012]
According to the above configuration, the protector 3 is disposed at an appropriate position in the front part of the fuel tank 1 with an appropriate gap 4 between the protector 3 and the outer surface of the fuel tank 1. Even if the airplane flies toward the fuel tank 1, it does not directly hit the fuel tank 1 but hits the protector 3, and the flexure of the protector 3 absorbs an impact to protect the fuel tank 1.
[0013]
Further, a part of the mud or water splashed by the tire may enter the gap 4 between the protector 3 and the fuel tank 1 as shown by an arrow E from between the upper end of the protector 3 and the upper outer surface of the fuel tank 1. However, the mud or water that has entered flows down below the seam flange 2 through a discharge passage 7 formed by a bead 6 as shown by an arrow G in FIG. , It is possible to suppress the generation of rust on the upper surface of the seam flange 2 by remaining on the seam flange 2. Further, the rigidity of the protector 3 itself is improved by forming the bead 6 on the protector 3.
[0014]
Furthermore, since the bulging portion 8 is formed so as to communicate with the upper end of the discharge passage 7 over an appropriate range of the upper portion of the mounting protrusion 4 of the protector 3, the bead 6 intrudes into a portion distant from the discharge passage 7. The mud, water, and the like that have passed are guided to the discharge passage 7 through the bulging portion 8 and are smoothly discharged, so that the generation of rust can be suppressed more reliably.
[0015]
In addition, since the bulging portion 8 and the lower bulging portion 9 are formed on the upper and lower portions of the mounting protrusion 4 of the protector 3 except for the peripheral edge, the surface rigidity of the surface of the protector 3 is increased in combination with the beads 6. The protection performance can be improved without increasing the thickness of the protector 3.
[0016]
Although the protector 3 is made of a synthetic resin in the above embodiment, it is needless to say that the protector 3 may be made of a metal plate or the like. The location and range of the protector 3 with respect to the fuel tank 1 are appropriately set according to the location of the fuel tank 1 with respect to the vehicle body, and are not limited to the above embodiments. Nor.
[0017]
【The invention's effect】
According to the fuel tank protection structure of the present invention, the lower surface of the upper wall of the mounting protrusion having a substantially rectangular cross section formed at a position below the upper end of the protector by an appropriate distance is brought into contact with the seam flange of the fuel tank. A vertical bead was formed at the appropriate location of the mounting projections so as to form a discharge passage passing from the upper surface of the seam flange to the outside of the outer edge. Even if mud or water enters the gap between the upper part of the protector and the outer surface of the upper part of the fuel tank, it flows down to the gap below the seam flange through the discharge passage formed by the bead and is discharged smoothly. Therefore, the generation of rust on the upper surface of the seam flange can be suppressed, and the effect of improving the rigidity of the protector itself by the bead can be obtained.
[0018]
In addition, since the bulging portion is formed so as to communicate with the upper end portion of the discharge passage over an appropriate range of the upper portion of the mounting protrusion of the protector, mud and water, etc., which have entered a portion away from the discharge passage by the bead are also formed. It is guided to the discharge passage through the bulging portion, and it is possible to obtain an effect that the discharge can be performed more smoothly and the generation of rust can be suppressed.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a fuel tank protection structure according to an embodiment of the present invention.
FIG. 2 is a partially enlarged sectional view taken along the line AA of FIG.
FIG. 3 is a partially enlarged cross-sectional view taken along the line BB of FIG. 1;
FIG. 4 is an overall perspective view of a conventional fuel tank protection structure.
FIG. 5 is a partially enlarged cross-sectional view taken along the line CC of FIG. 4;
FIG. 6 is a partially enlarged cross-sectional view taken along the line DD of FIG. 4;
[Explanation of symbols]
REFERENCE SIGNS LIST 1 fuel tank 2 seam flange 3 protector 4 gap 5 mounting projection 5 a upper wall 6 bead 7 discharge passage 8 bulge

Claims (1)

燃料タンクの前方部の適所にその外面との間に適当な隙間をあけてプロテクタを配置するとともに、このプロテクタの上端より適当距離下方位置に形成した断面略つ字状の取付用突出部の上壁下面を燃料タンクのシームフランジ上に当接させて適当箇所をボルト固定し、かつ取付用突出部の適当箇所にシームフランジの上面上から外縁の外側を通る排出通路を形成するように上下方向のビードを突出形成し、前記取付用突出部の上部の適当範囲にわたって排出通路の上端部に連通するように膨出部を形成したことを特徴とする燃料タンクの保護構造。A protector is placed at an appropriate position in front of the fuel tank with an appropriate gap between the protector and its outer surface, and the mounting protrusion is formed at an appropriate distance below the upper end of the protector and has a substantially rectangular cross section. The bottom surface of the wall abuts on the seam flange of the fuel tank and bolts the appropriate places, and the vertical direction so that a discharge passage that passes from the top surface of the seam flange to the outside of the outer edge is formed at the appropriate place of the mounting projection. A projecting portion formed so as to communicate with the upper end of the discharge passage over an appropriate range above the mounting projecting portion .
JP18370198A 1998-06-30 1998-06-30 Fuel tank protection structure Expired - Fee Related JP3566084B2 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP18370198A JP3566084B2 (en) 1998-06-30 1998-06-30 Fuel tank protection structure

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JP2000016096A JP2000016096A (en) 2000-01-18
JP3566084B2 true JP3566084B2 (en) 2004-09-15

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US8616581B2 (en) 2011-04-04 2013-12-31 Honda Motor Co., Ltd. Mounting arrangement for protector mounted to fuel tank
JP6507972B2 (en) * 2015-09-28 2019-05-08 スズキ株式会社 Fuel tank protector
KR102361463B1 (en) * 2020-07-08 2022-02-16 주식회사 동희산업 Plug for fuel tank

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