JP2016166007A - Fuel tank - Google Patents

Fuel tank Download PDF

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JP2016166007A
JP2016166007A JP2016089501A JP2016089501A JP2016166007A JP 2016166007 A JP2016166007 A JP 2016166007A JP 2016089501 A JP2016089501 A JP 2016089501A JP 2016089501 A JP2016089501 A JP 2016089501A JP 2016166007 A JP2016166007 A JP 2016166007A
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fuel tank
extending
wall
hole
gap
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JP6191725B2 (en
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千明 片岡
Chiaki Kataoka
千明 片岡
大輔 田邉
Daisuke Tanabe
大輔 田邉
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

PROBLEM TO BE SOLVED: To maintain constant deformation volume of compressive deformation and expansion deformation of a fuel tank body.SOLUTION: A first gap 28, which is eliminated when a fuel tank body 14 is deformed in a compression manner, is formed between a lower side reinforcement member 18 and an upper side reinforcement member 20 in the fuel tank body 14. A second gap 40, which is eliminated when the fuel tank body 14 is deformed in an expansion manner, is formed between a facing member 30 of the lower side reinforcement member 18 and the upper side reinforcement member 20.SELECTED DRAWING: Figure 1

Description

本発明は、燃料タンクに関する。   The present invention relates to a fuel tank.

自動車に搭載される燃料タンクでは、たとえば特許文献１に記載されているように、タンクの上面と下面との間に補強装置を設け、圧縮力及び引張り力を両方とも吸収できるようにした構造がある。   In a fuel tank mounted on an automobile, for example, as described in Patent Document 1, a reinforcing device is provided between an upper surface and a lower surface of the tank so that both a compressive force and a tensile force can be absorbed. is there.

特開２０１２−３５９１４号公報JP 2012-35914 A

しかし、特許文献１に記載の構造では、燃料タンク１内の圧力が高くなった場合に、軸方向固定手段によって壁部が互いに遠ざかるのを防止しているため、燃料タンクの変形（容積変化）を許容できない。また、燃料タンクの内圧が低くなった場合には、スプリング装置が圧縮されるため、燃料タンクの変形量を一定にすることが難しい。   However, in the structure described in Patent Document 1, when the pressure in the fuel tank 1 is increased, the wall portions are prevented from moving away from each other by the axial fixing means, so that the fuel tank is deformed (volume change). Is unacceptable. Further, when the internal pressure of the fuel tank becomes low, the spring device is compressed, so that it is difficult to make the deformation amount of the fuel tank constant.

本発明は上記事実を考慮し、燃料タンク本体の圧縮変形及び膨張変形の変形量を一定にすることを課題とする。   In view of the above facts, an object of the present invention is to make the deformation amount of the compression deformation and the expansion deformation of the fuel tank main body constant.

本発明の第１の態様では、燃料を収容する燃料タンク本体と、前記燃料タンク本体の対向する２つの対向壁の間に設けられ、前記対向壁の接近により第１間隙を解消して接触する第１接触部材と、前記対向壁の離間により第２間隙を解消して接触する第２接触部材と、備えた構造部材と、を有する。   In the first aspect of the present invention, the fuel tank main body for storing the fuel and the two opposing walls of the fuel tank main body are provided, and the first gap is eliminated by the approach of the opposing walls to come into contact with each other. And a structural member provided with a first contact member, a second contact member that comes into contact with the second gap by the separation of the opposing wall.

この燃料タンクでは、燃料タンク本体の対向する２つの対向壁の間に構造部材が設けられている。   In this fuel tank, a structural member is provided between two opposing walls of the fuel tank body.

燃料タンク本体の圧縮時（たとえば負圧時）に対向壁が接近すると、構造部材の第１間隙が狭くなる。第１接触部材が接触すると第１間隙が解消される。すなわち、燃料タンク本体の圧縮変形が許容されると共に、この変形量は、第１間隙が解消される一定量にされる。   When the opposing wall approaches when the fuel tank body is compressed (for example, under negative pressure), the first gap of the structural member becomes narrower. When the first contact member comes into contact, the first gap is eliminated. That is, compression deformation of the fuel tank body is allowed, and the amount of deformation is set to a constant amount that eliminates the first gap.

また、燃料タンク本体の膨張時（たとえば正圧時）に対向壁が離間すると、構造部材の第２間隙が狭くなる。第２接触部材が接触すると第２間隙が解消される。すなわち、燃料タンク本体の膨張変形が許容されると共に、この変形量が、第２間隙が解消される一定量にされる。   Further, when the opposing wall is separated when the fuel tank body is expanded (for example, at positive pressure), the second gap of the structural member is narrowed. When the second contact member comes into contact, the second gap is eliminated. That is, expansion deformation of the fuel tank body is allowed, and the deformation amount is set to a constant amount that eliminates the second gap.

本発明の第２の態様では、第１の態様において、前記構造部材が、前記対向壁の一方から他方に延出された第１延出部材と、前記対向壁の他方から一方に延出された第２延出部材と、を有する。   According to a second aspect of the present invention, in the first aspect, the structural member extends from one of the opposing walls to the other, and from the other of the opposing walls to the other. And a second extending member.

構造部材を、対向壁の一方から延出された第１延出部材と、対向壁の他方から延出された第２延出部材と、を有する簡単な構造で実現できる。   The structural member can be realized with a simple structure having a first extending member extending from one of the opposing walls and a second extending member extending from the other of the opposing walls.

本発明の第３の態様では、第２の態様において、前記第１接触部材が、前記第１延出部材に設けられた第１接触部と、前記第１延出部材と対向する前記対向壁又は前記第２延出部材に設けられ前記第１接触部との間に前記第１間隙を構成する第１被接触部と、を有する。   According to a third aspect of the present invention, in the second aspect, the first contact member includes a first contact portion provided on the first extension member, and the opposing wall facing the first extension member. Or it has a 1st to-be-contacted part which comprises the said 1st clearance gap between the said 1st contact parts provided in the said 2nd extension member.

第１延出部材に第１接触部を設け、第１延出部材と対向する対向壁又は第２延出部材に第１被接触部を設ける簡単な構造で、第１接触部材を構成できる。   A 1st contact member can be comprised by the simple structure which provides a 1st contact part in a 1st extension member, and provides a 1st to-be-contacted part in the opposing wall facing a 1st extension member, or a 2nd extension member.

本発明の第４の態様では、第２の態様又は第３の態様において、前記第２接触部材が、前記第１延出部材に設けられた第２接触部と、前記第１延出部材と対向する前記対向壁又は前記第２延出部材に設けられ前記第２接触部との間に前記第２間隙を構成する第２被接触部と、を有する。   In the 4th mode of the present invention, in the 2nd mode or the 3rd mode, the 2nd contact member is the 2nd contact part provided in the 1st extension member, The 1st extension member, A second contacted portion that is provided on the opposing wall or the second extending member and that forms the second gap between the second contact portion and the second extending member.

第１延出部材に第２接触部を設け、第１延出部材と対向する対向壁又は第２延出部材に第２被接触部を設ける簡単な構造で、第２接触部材を構成できる。   The second contact member can be configured with a simple structure in which the second extending portion is provided on the first extending member and the second contacted portion is provided on the opposing wall facing the first extending member or on the second extending member.

本発明の第５の態様では、第４の態様において、前記第２被接触部が、前記第１延出部材と対向する前記対向壁又は前記第２延出部材に設けられ前記第２接触部と対向する対向部材に設けられている。   According to a fifth aspect of the present invention, in the fourth aspect, the second contact portion is provided on the opposing wall or the second extension member facing the first extension member. It is provided in the opposing member which opposes.

第２被接触部を対向部材に設けることで、対向部材の形状変更等により、第２間隙の長さを容易に調整できる。   By providing the second contacted portion on the facing member, the length of the second gap can be easily adjusted by changing the shape of the facing member.

本発明の第６の態様では、第５の態様において、前記対向部材が、前記第１延出部材と対向する前記対向壁又は前記第２延出部材に固定されている。   In a sixth aspect of the present invention, in the fifth aspect, the facing member is fixed to the facing wall or the second extending member facing the first extending member.

これにより、対向部材が対向壁や第２延出部材と別体の構成と比較して、対向部材の位置を安定的に維持できると共に、部品点数が少なくなる。なお、この「固定」には、対向部材が、対向壁や第２延出部材と別体で成形され、後工程で固定された構造と、一体成形された構造の双方を含む。   Accordingly, the position of the facing member can be stably maintained and the number of parts can be reduced as compared with a configuration in which the facing member is separate from the facing wall and the second extending member. The “fixing” includes both a structure in which the facing member is formed separately from the facing wall and the second extending member and is fixed in a later process, and a structure in which the facing member is integrally formed.

本発明の第７の態様では、第５の態様において、前記対向部材が、前記第１延出部材及び前記第２延出部材に嵌合されている。   In a seventh aspect of the present invention, in the fifth aspect, the facing member is fitted to the first extending member and the second extending member.

対向部材が第１延出部材と第２延出部材の双方に嵌合されるので、対向部材を第１延出部材と第２延出部材とに組み付ける作業が容易である。   Since the opposing member is fitted to both the first extending member and the second extending member, the work of assembling the opposing member to the first extending member and the second extending member is easy.

本発明の第８の態様では、第７の態様において、前記第１延出部材に形成され前記対向部材が嵌合される第１嵌合孔と、前記第２延出部材に形成され前記対向部材が嵌合される第２嵌合孔と、前記第１延出部材に形成され前記第１嵌合孔と連通して前記第１延出部材の外部に開口する第１スリットと、前記第２延出部材に形成され前記第２嵌合孔と連通して第１スリットと同方向で前記第２延出部材の外部に開口される第２スリットと、を有する。   According to an eighth aspect of the present invention, in the seventh aspect, a first fitting hole formed in the first extending member and into which the facing member is fitted, and formed in the second extending member and opposed to the first extending hole. A second fitting hole into which the member is fitted, a first slit formed in the first extending member and communicating with the first fitting hole and opening to the outside of the first extending member, and the first And a second slit formed in the extending member and communicating with the second fitting hole and opened to the outside of the second extending member in the same direction as the first slit.

第１延出部材の第１嵌合孔と、第２延出部材の第２嵌合孔の双方に、対向部材を嵌合することができる。第１延出部材に形成された第１スリット及び第２嵌合部材に形成された第２スリットを通じて、第１嵌合孔及び第２嵌合孔に対向部材を嵌合させることができる。第２スリットは、第１スリットと同方向で第２延出部材の外部に開口しているので、対向部材を第１スリット及び第２スリットに挿入する作業が容易である。   The opposing member can be fitted into both the first fitting hole of the first extending member and the second fitting hole of the second extending member. The opposing member can be fitted into the first fitting hole and the second fitting hole through the first slit formed in the first extending member and the second slit formed in the second fitting member. Since the second slit opens to the outside of the second extending member in the same direction as the first slit, the operation of inserting the opposing member into the first slit and the second slit is easy.

本発明の第９の態様では、第２の態様又は第３の態様において、前記第１延出部材及び前記第２延出部材のいずれか一方に設けられた挿入部材と、前記第１延出部材及び前記第２延出部材の他方に設けられ前記挿入部材が挿入されると共に、挿入部材との間に前記第１間隙及び前記第２間隙を構成する挿入孔と、を有する。   According to a ninth aspect of the present invention, in the second aspect or the third aspect, the insertion member provided in one of the first extension member and the second extension member, and the first extension The insertion member is provided on the other of the member and the second extending member, and the insertion member is inserted between the insertion member and the insertion hole that forms the first gap and the second gap.

挿入部材を挿入孔に挿入する簡単な構造で、挿入孔と挿入部材との間に、第１間隙と第２間隙の双方を構成できる。挿入部材や挿入孔の大きさを調整することで、第１間隙及び第２間隙の長さを所望の長さに設定することができる。   With a simple structure for inserting the insertion member into the insertion hole, both the first gap and the second gap can be formed between the insertion hole and the insertion member. By adjusting the sizes of the insertion member and the insertion hole, the lengths of the first gap and the second gap can be set to desired lengths.

本発明の第１０の態様では、第９の態様において、前記第１延出部材及び前記第２延出部材のいずれか一方に形成され前記挿入部材が挿入されて固定される固定孔を有する。   According to a tenth aspect of the present invention, in the ninth aspect, there is provided a fixing hole formed in one of the first extending member and the second extending member, into which the inserting member is inserted and fixed.

挿入部材を挿入孔及び固定孔に挿入した後、固定孔に固定できるので、たとえば、挿入部材が第１延出部材及び前記第２延出部材のいずれか一方にあらかじめ固定された構造と比較して、組み付けが容易である。   After the insertion member is inserted into the insertion hole and the fixing hole, it can be fixed to the fixing hole. For example, the insertion member is compared with a structure in which the insertion member is fixed in advance to either the first extension member or the second extension member. Assembling is easy.

本発明の第１１の態様では、第２の態様において、前記第１延出部材に形成された第１係合部と、前記第２延出部材に形成された第２係合部と、前記燃料タンク本体内の燃料移動で前記第１係合部と前記第２係合部とに係合される被係合部材と、を有する。   In an eleventh aspect of the present invention, in the second aspect, the first engagement portion formed on the first extension member, the second engagement portion formed on the second extension member, An engaged member engaged with the first engaging portion and the second engaging portion by fuel movement in the fuel tank main body.

燃料タンク本体内の燃料移動により、被係合部材が、第１係合部と第２係合部とに係合される。これにより、第１延出部材と第２延出部材との相対移動が抑制される。第１延出部材は対向壁の一方から延出され、第２延出部材は対向壁の他方から延出されているので、対向壁の接近及び離間が抑制される。すなわち、燃料タンク本体内の燃料移動時の燃料タンク本体の変形が抑制される。   The engaged member is engaged with the first engaging portion and the second engaging portion by the movement of the fuel in the fuel tank body. Thereby, relative movement of the 1st extension member and the 2nd extension member is controlled. Since the 1st extension member is extended from one of the opposing walls, and the 2nd extension member is extended from the other of the opposing walls, approach and separation of an opposing wall are controlled. That is, deformation of the fuel tank main body when the fuel moves in the fuel tank main body is suppressed.

本発明の第１２の態様では、第１１の態様において、前記第１延出部材と前記第２延出部材とが延出方向と直交する方向に見て互いに重なる重なり部を有し、前記重なり部において前記第１延出部材に形成された前記第１係合部としての第１貫通孔と、前記重なり部において前記第２延出部材に形成された前記第２係合部としての第２貫通孔と、前記重なり部に対向し前記燃料タンク内の燃料移動で前記重なり部に接近する対向部材と、前記対向部材に設けられ、前記第１貫通孔と前記第２貫通孔とが一致した状態で前記対向材が前記重なり部に接近すると前記第１貫通孔及び前記第２貫通孔に挿入される前記被係合部材としての挿入部材と、を有する。   According to a twelfth aspect of the present invention, in the eleventh aspect, the first extending member and the second extending member have an overlapping portion that overlaps each other when viewed in a direction orthogonal to the extending direction. A first through hole as the first engaging portion formed in the first extending member in the portion, and a second as the second engaging portion formed in the second extending member in the overlapping portion. A through hole, a facing member facing the overlapping portion and approaching the overlapping portion by fuel movement in the fuel tank; and provided in the facing member, wherein the first through hole and the second through hole coincide with each other. And the insertion member as the engaged member inserted into the first through hole and the second through hole when the facing material approaches the overlapping portion in the state.

燃料タンク本体内の燃料移動により対向部材が重なり部に接近する。そして、第１貫通孔と第２貫通孔とが一致した状態で挿入部材が第１貫通孔及び第２貫通孔に挿入される。これにより、第１延出部材と第２延出部材との相対移動が抑制される。挿入部材を第１貫通孔及び第２貫通孔に挿入することで、第１延出部材と第２延出部材との相対移動を確実に抑制できる。対向部材により燃料タンク本体内の燃料移動の力を受けるので、挿入部材は確実に第１貫通孔及び第２貫通孔に挿入される。   The opposing member approaches the overlapping portion by the fuel movement in the fuel tank body. Then, the insertion member is inserted into the first through hole and the second through hole in a state where the first through hole and the second through hole coincide with each other. Thereby, relative movement of the 1st extension member and the 2nd extension member is controlled. By inserting the insertion member into the first through hole and the second through hole, relative movement between the first extending member and the second extending member can be reliably suppressed. Since the opposing member receives the force of fuel movement in the fuel tank body, the insertion member is reliably inserted into the first through hole and the second through hole.

本発明の第１３の態様では、第１２の態様において、前記第１延出部材が前記対向方向に延在する筒状の第１筒状部材であり、前記第２延出部材が前記第１筒状部材の外側または内側に位置する第２筒状部材である。   In a thirteenth aspect of the present invention, in the twelfth aspect, the first extending member is a cylindrical first tubular member extending in the facing direction, and the second extending member is the first. It is the 2nd cylindrical member located in the outer side or inner side of a cylindrical member.

第１筒状部材の外側又は内側に第２筒状部材が位置するので、第１筒状部材及び第２筒状部材の全周で重なり部を構成できる。   Since the 2nd cylindrical member is located in the outside or the inside of the 1st cylindrical member, an overlap part can be constituted by the perimeter of the 1st cylindrical member and the 2nd cylindrical member.

本発明の第１４の態様では、第１３の態様において、前記貫通孔が、前記第１筒状部材及び前記第２筒状部材の周方向に複数形成され、前記挿入部材を備えた前記対向部材が、前記第１筒状部材及び前記第２筒状部材の周囲で周方向に複数設けられる。   In a fourteenth aspect of the present invention, in the thirteenth aspect, the opposing member is provided with the insertion member in which a plurality of the through holes are formed in a circumferential direction of the first cylindrical member and the second cylindrical member. Are provided in the circumferential direction around the first cylindrical member and the second cylindrical member.

これにより、燃料タンク本体内で複数の方向での燃料移動に対し、第１延出部材と第２延出部材との相対移動を抑制できる。   Thereby, relative movement of the first extending member and the second extending member can be suppressed with respect to fuel movement in a plurality of directions within the fuel tank body.

本発明の第１５の態様では、第１２〜第１４のいずれか１つの態様において、前記対向部材を前記重なり部から離間する方向に付勢し、所定以下の前記燃料流動では前記挿入部材が前記貫通孔に非挿入である状態を維持するバネ部材を有する。   In a fifteenth aspect of the present invention, in any one of the twelfth to fourteenth aspects, the opposing member is urged in a direction away from the overlapping portion, and the insertion member is A spring member that maintains a state of being not inserted into the through hole is provided.

これにより、バネ部材の付勢力より弱い力が対向部材に作用したときに、挿入部材が不用意に第１貫通孔及び第２貫通孔に挿入されることを抑制できる。   Thereby, when the force weaker than the urging | biasing force of a spring member acts on an opposing member, it can suppress that an insertion member is carelessly inserted in a 1st through-hole and a 2nd through-hole.

本発明の第１６の態様では、第２の態様において、前記第１延出部材に設けられ水平方向に対し傾斜した傾斜面と、前記傾斜面に支持され横方向の加速度で傾斜面を上昇する移動部材と、前記第２延出部材に設けられ前記傾斜面を上昇した前記移動部材の上方で前記移動部材と対向する対向面と、を有する。   According to a sixteenth aspect of the present invention, in the second aspect, the inclined surface is provided on the first extending member and is inclined with respect to a horizontal direction, and the inclined surface is lifted by a lateral acceleration supported by the inclined surface. A moving member; and a facing surface that faces the moving member above the moving member that is provided on the second extending member and has moved up the inclined surface.

横方向の加速度により移動部材が傾斜面を上昇すると、この移動部材の上方には対向面が位置する。傾斜面と対向面の間に移動部材が位置するので、傾斜面と対向面の接近量が制限される。傾斜面は第１延出部材に、対向面は第２延出部材にそれぞれ設けられているので、燃料タンク本体の対向壁の接近又は離間を抑制できる。すなわち、横方向の加速度が作用したときの燃料タンク本体の変形が抑制される。   When the moving member ascends the inclined surface due to the lateral acceleration, the opposing surface is positioned above the moving member. Since the moving member is located between the inclined surface and the opposing surface, the approach amount between the inclined surface and the opposing surface is limited. Since the inclined surface is provided on the first extending member and the opposing surface is provided on the second extending member, the approach or separation of the opposing wall of the fuel tank body can be suppressed. That is, deformation of the fuel tank main body when lateral acceleration is applied is suppressed.

本発明の第１７の態様では、第１６の態様において、前記第１延出部材が前記燃料タンク本体の上壁から下壁に延出された上延出部材であり、前記第２延出部材が前記燃料タンク本体の下壁から上壁に延出された下延出部材であり、前記傾斜面が前記上延出部材に設けられ、前記対向面が前記下延出部材に設けられる。   According to a seventeenth aspect of the present invention, in the sixteenth aspect, the first extending member is an upper extending member extending from an upper wall of the fuel tank body to a lower wall, and the second extending member. Is a lower extension member extended from the lower wall of the fuel tank body to the upper wall, the inclined surface is provided on the upper extension member, and the opposing surface is provided on the lower extension member.

傾斜面が上延出部材に設けられ、対向面が下延出部材に設けられるので、上延出部材が下延出部材に対し上方に移動したとき、傾斜面と対向面の接近量が制限される。これにより、燃料タンク本体の上壁と下壁とが離間する方向の相対移動を抑制できる。   Since the inclined surface is provided on the upper extending member and the opposing surface is provided on the lower extending member, when the upper extending member moves upward with respect to the lower extending member, the approach amount between the inclined surface and the opposing surface is limited. Is done. Thereby, the relative movement of the direction in which the upper wall and lower wall of a fuel tank main body separate can be suppressed.

本発明の第１８の態様では、第１６又は第１７の態様において、前記傾斜面が、相対的に低位置にある中心部から全周で外側に向かって上方に傾斜する。   According to an eighteenth aspect of the present invention, in the sixteenth or seventeenth aspect, the inclined surface is inclined upward outward from the center at a relatively low position on the entire circumference.

これにより、加速度が横方向に沿っていれば、どの方向の加速度であっても、移動部材が傾斜面を上昇し、傾斜面と対向面の間に位置する。燃料タンク本体内で横方向に沿った複数の方向の加速度に対し、第１延出部材と第２延出部材との相対移動を抑制できる。   Thereby, if the acceleration is along the lateral direction, the moving member moves up the inclined surface regardless of the acceleration in any direction, and is positioned between the inclined surface and the opposing surface. The relative movement of the first extending member and the second extending member can be suppressed with respect to acceleration in a plurality of directions along the lateral direction in the fuel tank body.

本発明の第１９の態様では、第１６〜第１８のいずれか１つの態様において、前記移動部材が球体である。   In a nineteenth aspect of the present invention, in any one of the sixteenth to eighteenth aspects, the moving member is a sphere.

球体が傾斜面を転がって上昇するので、上昇に不用意な抵抗が生じない。そして、球体が傾斜面を上昇するための条件を、傾斜面の傾斜角度で容易に調整できる。   Since the sphere rolls up on the inclined surface and rises, inadvertent resistance to the rise does not occur. And the conditions for a spherical body to raise an inclined surface can be easily adjusted with the inclination angle of an inclined surface.

本発明の第２０の態様では、第１６〜第１９のいずれか１つの態様において、前記傾斜面と前記対向面との隙間が前記第２間隙を構成している。   According to a twentieth aspect of the present invention, in any one of the sixteenth to nineteenth aspects, a gap between the inclined surface and the facing surface constitutes the second gap.

傾斜面と対向面とを用いて第２間隙を構成できるので、構造部材の構造を簡素化できる。   Since the second gap can be configured using the inclined surface and the opposed surface, the structure of the structural member can be simplified.

本発明の第２１の態様では、第１７の態様において、前記下延出部材と前記上延出部材とが水平方向に見て互いに重なる重なり部を有し、前記重なり部において前記上延出部材を貫通し前記傾斜面を構成して前記移動部材を支持する傾斜孔と、前記重なり部において前記下延出部材を貫通し前記対向面を構成して前記移動部材が挿通される対向孔と、前記傾斜孔及び前記対向孔の少なくとも一方から連続し、前記上延出部材と前記下延出部材との相対的な上下動時に前記移動部材が移動する移動孔と、を有する。   According to a twenty-first aspect of the present invention, in the seventeenth aspect, the lower extending member and the upper extending member have an overlapping portion that overlaps each other when viewed in the horizontal direction, and the upper extending member is in the overlapping portion. An inclined hole that forms the inclined surface and supports the moving member, and an opposed hole that penetrates the lower extending member in the overlapping portion and constitutes the opposed surface and through which the moving member is inserted, A moving hole that is continuous from at least one of the inclined hole and the counter hole and that moves the moving member when the upper extending member and the lower extending member move up and down relatively.

傾斜孔の傾斜面に支持された移動部材に水平方向の加速度が作用すると、移動部材は傾斜面を上昇する。この移動部材の上方には、対向孔の対向面が対向する。傾斜面と対向面の間に移動部材が位置するので、傾斜面と対向面の接近量が制限される。傾斜面は上延出部材に、対向面は下延出部材にそれぞれ設けられているので、燃料タンク本体の対向壁の離間を抑制できる。すなわち、横方向の加速度が作用したときの燃料タンク本体の変形が抑制される。   When horizontal acceleration acts on the moving member supported by the inclined surface of the inclined hole, the moving member moves up the inclined surface. The facing surface of the facing hole faces above the moving member. Since the moving member is located between the inclined surface and the opposing surface, the approach amount between the inclined surface and the opposing surface is limited. Since the inclined surface is provided on the upper extending member and the opposing surface is provided on the lower extending member, separation of the opposing wall of the fuel tank body can be suppressed. That is, deformation of the fuel tank main body when lateral acceleration is applied is suppressed.

傾斜孔及び対向傾斜孔の少なくとも一方からは移動孔が連続する。上延出部材と下延出部材との相対的な上下動時に、移動孔を移動部材が移動すると、この移動孔の範囲で、対向壁の接近及び離間が許容される。   A moving hole continues from at least one of the inclined hole and the opposed inclined hole. When the moving member moves through the moving hole during the relative vertical movement of the upper extending member and the lower extending member, the approaching and separating of the opposing wall is allowed within the range of the moving hole.

本発明は上記構成としたので、燃料タンク本体の圧縮変形及び膨張変形の変形量を一定に維持できる。   Since the present invention has the above-described configuration, the deformation amount of the compression deformation and the expansion deformation of the fuel tank body can be maintained constant.

本発明の第１実施形態の燃料タンクを示す縦断面図である。It is a longitudinal cross-sectional view which shows the fuel tank of 1st Embodiment of this invention. 本発明の第１実施形態の燃料タンクの内部を示す斜視図である。It is a perspective view which shows the inside of the fuel tank of 1st Embodiment of this invention. 本発明の第１実施形態の燃料タンクを変形していない状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing in a state where the fuel tank of a 1st embodiment of the present invention is not deformed. 本発明の第１実施形態の燃料タンクを圧縮変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of a 1st embodiment of the present invention in the state which carried out compression deformation. 本発明の第１実施形態の燃料タンクを膨張変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of a 1st embodiment of the present invention in the state of expanding and deforming. 本発明の第１実施形態の変形例の燃料タンクを部分的に示す縦断面図である。It is a longitudinal cross-sectional view which shows partially the fuel tank of the modification of 1st Embodiment of this invention. 本発明の第２実施形態の燃料タンクの内部を示す斜視図である。It is a perspective view which shows the inside of the fuel tank of 2nd Embodiment of this invention. 本発明の第２実施形態の燃料タンクを変形していない状態で部分的に示す拡大断面図である。It is an expanded sectional view partially shown in the state where the fuel tank of a 2nd embodiment of the present invention is not changed. 本発明の第２実施形態の燃料タンクを圧縮変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of a 2nd embodiment of the present invention in the state which carried out compression deformation. 本発明の第２実施形態の燃料タンクを膨張変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing in the state where the fuel tank of a 2nd embodiment of the present invention was expanded and deformed. 本発明の第３実施形態の燃料タンクの内部を示す斜視図である。It is a perspective view which shows the inside of the fuel tank of 3rd Embodiment of this invention. 本発明の第３実施形態の燃料タンクを変形していない状態で部分的に示す拡大断面図である。It is an expanded sectional view partially shown in the state where the fuel tank of a 3rd embodiment of the present invention is not changed. 本発明の第３実施形態の燃料タンクを圧縮変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of a 3rd embodiment of the present invention in the state where it compressively deformed. 本発明の第３実施形態の燃料タンクを膨張変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing in the state where the fuel tank of a 3rd embodiment of the present invention was expanded and deformed. 本発明の第４実施形態の燃料タンクの内部を示す斜視図である。It is a perspective view which shows the inside of the fuel tank of 4th Embodiment of this invention. 本発明の第５実施形態の燃料タンクの内部を示す斜視図である。It is a perspective view which shows the inside of the fuel tank of 5th Embodiment of this invention. 本発明の第４実施形態の変形例の燃料タンクの内部を示す斜視図である。It is a perspective view which shows the inside of the fuel tank of the modification of 4th Embodiment of this invention. 本発明の第６実施形態の燃料タンクを示す縦断面図である。It is a longitudinal cross-sectional view which shows the fuel tank of 6th Embodiment of this invention. 本発明の第６実施形態の燃料タンクを示す図１２の１３−１３線断面図である。FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 12 showing a fuel tank according to a sixth embodiment of the present invention. 本発明の第６実施形態の燃料タンクを変形していない状態で部分的に示す拡大断面図である。It is an expanded sectional view partially shown in the state where it has not changed the fuel tank of a 6th embodiment of the present invention. 本発明の第６実施形態の燃料タンクを圧縮変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of a 6th embodiment of the present invention in the state where it compressively deformed. 本発明の第６実施形態の燃料タンクを膨張変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing in the state where the fuel tank of a 6th embodiment of the present invention was expanded and deformed. 本発明の第６実施形態の燃料タンクを燃料が移動した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of a 6th embodiment of the present invention in the state where fuel moved. 本発明の第７実施形態の燃料タンクの内部を示す分解斜視図である。It is a disassembled perspective view which shows the inside of the fuel tank of 7th Embodiment of this invention. 本発明の第７実施形態の燃料タンクを変形していない状態で部分的に示す拡大断面図である。It is an expanded sectional view partially shown in the state which has not changed the fuel tank of a 7th embodiment of the present invention. 本発明の第７実施形態の燃料タンクを圧縮変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing in the state where the fuel tank of a 7th embodiment of the present invention was compressed and deformed. 本発明の第７実施形態の燃料タンクを膨張変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing in the state where the fuel tank of a 7th embodiment of the present invention was expanded and deformed. 本発明の第８実施形態の燃料タンクの内部を示す分解側面図である。It is a disassembled side view which shows the inside of the fuel tank of 8th Embodiment of this invention. 本発明の第８実施形態の燃料タンクを変形していない状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of an 8th embodiment of the present invention in the state which has not changed. 本発明の第８実施形態の燃料タンクを圧縮変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of an 8th embodiment of the present invention in the state where it compressively deformed. 本発明の第８実施形態の燃料タンクを膨張変形した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of an 8th embodiment of the present invention in the state of expanding and deforming. 本発明の第８実施形態の燃料タンクを加速度が作用した状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of an 8th embodiment of the present invention in the state where acceleration acted. 本発明の第８実施形態の燃料タンクを変形していない状態で部分的に示す図１８Ａの１９−１９線断面図である。FIG. 19B is a cross-sectional view taken along line 19-19 of FIG. 18A, partially showing the fuel tank of the eighth embodiment of the present invention in an undeformed state. 本発明の第８実施形態の変形例の燃料タンクを変形していない状態で部分的に示す拡大断面図である。It is an expanded sectional view partially showing the fuel tank of the modification of the 8th embodiment of the present invention in the state where it has not changed.

本発明の第１実施形態の燃料タンクについて、図面を参照して説明する。   A fuel tank according to a first embodiment of the present invention will be described with reference to the drawings.

図１には、本発明の第１実施形態の燃料タンク１２が示されている。以下、図面において、車両前方方向を矢印ＦＲで、上方向を矢印ＵＰで、車幅方向を矢印Ｗでそれぞれ示す。なお、図１では、紙面の横方向を車両前後方向としているが、紙面横方向が車幅方向であってもよい。   FIG. 1 shows a fuel tank 12 according to a first embodiment of the present invention. In the drawings, the forward direction of the vehicle is indicated by an arrow FR, the upward direction is indicated by an arrow UP, and the vehicle width direction is indicated by an arrow W. In FIG. 1, the horizontal direction of the paper surface is the vehicle front-rear direction, but the horizontal direction of the paper surface may be the vehicle width direction.

燃料タンク１２は、内部に燃料を収容可能な燃料タンク本体１４を有している。燃料タンク本体１４は、本実施形態では樹脂製とされている。燃料タンク本体１４は、全体として、内部に燃料を収容可能な形状（たとえば図示の例では略直方体の箱状）に形成されている。特に本実施形態では、燃料タンク本体１４は、図１に示す断面で、下壁１４Ｂ、上壁１４Ｔ、前壁１４Ｆ及び後壁１４Ｒを有する長方形状である。この断面において、下壁１４Ｂ及び上壁１４Ｔは、前壁１４Ｆ及び後壁１４Ｒに比べて長い。上壁１４Ｔ及び下壁１４Ｂは、本発明に係る対向壁１４Ｍの例である。   The fuel tank 12 has a fuel tank body 14 capable of containing fuel therein. The fuel tank body 14 is made of resin in this embodiment. The fuel tank body 14 as a whole is formed in a shape (for example, a substantially rectangular parallelepiped box shape in the illustrated example) in which fuel can be accommodated. In particular, in the present embodiment, the fuel tank main body 14 has a rectangular shape having a lower wall 14B, an upper wall 14T, a front wall 14F, and a rear wall 14R in the cross section shown in FIG. In this cross section, the lower wall 14B and the upper wall 14T are longer than the front wall 14F and the rear wall 14R. The upper wall 14T and the lower wall 14B are examples of the facing wall 14M according to the present invention.

燃料タンク本体１４内には、構造部材１６が備えられている。第１実施形態では、構造部材１６は、下壁１４Ｂから上壁１４Ｔに向かって延出された下側補強部材１８と、上壁１４Ｔから下壁１４Ｂに向かって延出された上側補強部材２０を有している。本実施形態では、下側補強部材１８及び上側補強部材２０はいずれも、燃料タンク本体１４を補強している。   A structural member 16 is provided in the fuel tank main body 14. In the first embodiment, the structural member 16 includes a lower reinforcing member 18 that extends from the lower wall 14B toward the upper wall 14T, and an upper reinforcing member 20 that extends from the upper wall 14T toward the lower wall 14B. have. In the present embodiment, the lower reinforcing member 18 and the upper reinforcing member 20 both reinforce the fuel tank body 14.

下側補強部材１８は、燃料タンク本体１４の下壁１４Ｂから斜め上方に延出された一対の縦壁１８Ａと、これら縦壁１８Ａの先端（上端）に連なる横壁１８Ｂを有する略台形状に形成されている。下側補強部材１８は、縦壁１８Ａの基端（下端）の取付フランジ２２を有しており、この取付フランジ２２によって、燃料タンク本体１４の下壁１４Ｂに、溶着やリベット等で取り付けられている。   The lower reinforcing member 18 is formed in a substantially trapezoidal shape having a pair of vertical walls 18A extending obliquely upward from the lower wall 14B of the fuel tank body 14 and a horizontal wall 18B connected to the tip (upper end) of the vertical walls 18A. Has been. The lower reinforcing member 18 has an attachment flange 22 at the base end (lower end) of the vertical wall 18A. The attachment flange 22 is attached to the lower wall 14B of the fuel tank body 14 by welding, rivets, or the like. Yes.

上側補強部材２０は、燃料タンク本体１４の上面から斜め上方に延出された一対の縦壁２０Ａと、これら縦壁２０Ａの先端（下端）に連なる横壁２０Ｂを有する略台形状に形成されている。上側補強部材２０は、縦壁２０Ａの基端（上端）の取付フランジ２４を有しており、この取付フランジ２４によって、燃料タンク本体１４の上壁１４Ｔに、溶着やリベット等で取り付けられている。   The upper reinforcing member 20 is formed in a substantially trapezoidal shape having a pair of vertical walls 20A extending obliquely upward from the upper surface of the fuel tank main body 14 and a horizontal wall 20B connected to the tip (lower end) of these vertical walls 20A. . The upper reinforcing member 20 has a mounting flange 24 at the base end (upper end) of the vertical wall 20A, and is attached to the upper wall 14T of the fuel tank body 14 by welding, rivets, or the like. .

下側補強部材１８の横壁１８Ｂと、上側補強部材２０の横壁２０Ｂとは互いに平行に対向しており、これら横壁１８Ｂ、２０Ｂの間に、上下方向に所定の間隔Ｄ１を有する第１間隙２８が構成されている。   The lateral wall 18B of the lower reinforcing member 18 and the lateral wall 20B of the upper reinforcing member 20 face each other in parallel, and a first gap 28 having a predetermined distance D1 in the vertical direction is formed between the lateral walls 18B and 20B. It is configured.

燃料タンク本体１４の上壁１４Ｔ及び下壁１４Ｂが相対的に接近し、下側補強部材１８及び上側補強部材２０が相対的に接近すると、第１間隙２８は徐々に狭くなる。そして、横壁１８Ｂと横壁２０Ｂとの間の第１間隙２８が解消されて横壁１８Ｂと横壁２０Ｂとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの接近が阻止される。   When the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are relatively close to each other and the lower reinforcing member 18 and the upper reinforcing member 20 are relatively close to each other, the first gap 28 is gradually narrowed. When the first gap 28 between the lateral wall 18B and the lateral wall 20B is eliminated and the lateral wall 18B and the lateral wall 20B come into contact with each other, the approach of the upper wall 14T and the lower wall 14B of the fuel tank body 14 is prevented.

下側補強部材１８の横壁１８Ｂからは、上方に向けて対向部材３０が形成されている。対向部材３０は、横壁１８Ｂの中央から上方に延出された円柱状の支柱３２と、この支柱３２の先端（上端）に形成された円板状の対向板３４と、を有している。   A facing member 30 is formed upward from the lateral wall 18B of the lower reinforcing member 18. The facing member 30 includes a columnar column 32 extending upward from the center of the horizontal wall 18B, and a disk-shaped counter plate 34 formed at the tip (upper end) of the column 32.

特に第１実施形態では、対向部材３０は、下側補強部材１８と一体成形されているか、もしくは下側補強部材１８に固定されており、下側補強部材１８と対向部材３０とが一体化されている。   Particularly in the first embodiment, the opposing member 30 is formed integrally with the lower reinforcing member 18 or is fixed to the lower reinforcing member 18, and the lower reinforcing member 18 and the opposing member 30 are integrated. ing.

上側補強部材２０の横壁２０Ｂには、嵌合孔３６及び挿入スリット３８が形成されている。挿入スリット３８は、嵌合孔３６と、横壁１８Ｂの外部とを連通しており、外部との連通部分は挿入開口３８Ｋとなっている。この挿入開口３８Ｋから支柱３２を挿入スリット３８に挿入し、嵌合孔３６に嵌合させることができる。嵌合孔３６の内径は支柱３２の外径よりもわずかに大きくされており、支柱３２（対向部材３０）は、横壁２０Ｂ（上側補強部材２０）に対し相対的に上下動可能である。   A fitting hole 36 and an insertion slit 38 are formed in the lateral wall 20B of the upper reinforcing member 20. The insertion slit 38 communicates with the fitting hole 36 and the outside of the lateral wall 18B, and the communicating portion with the outside is an insertion opening 38K. The support column 32 can be inserted into the insertion slit 38 from the insertion opening 38K and fitted into the fitting hole 36. The inner diameter of the fitting hole 36 is slightly larger than the outer diameter of the support column 32, and the support column 32 (opposing member 30) can move up and down relatively with respect to the lateral wall 20B (upper reinforcing member 20).

対向板３４は、上側補強部材２０の横壁２０Ｂと互いに平行に対向しており、所定の間隔Ｄ２をする第２間隙４０が構成されている。   The facing plate 34 faces the lateral wall 20B of the upper reinforcing member 20 in parallel with each other, and a second gap 40 having a predetermined distance D2 is formed.

第２間隙４０は、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂとが相対的に離間し、下側補強部材１８及び上側補強部材２０も相対的に離間すると、徐々に狭くなる。そして、対向板３４と横壁２０Ｂとの間の第２間隙４０が解消されて対向板３４と横壁２０Ｂとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの離間が阻止される。   The second gap 40 gradually narrows when the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are relatively separated from each other and the lower reinforcing member 18 and the upper reinforcing member 20 are also relatively separated from each other. When the second gap 40 between the opposing plate 34 and the lateral wall 20B is eliminated and the opposing plate 34 and the lateral wall 20B come into contact with each other, the separation between the upper wall 14T and the lower wall 14B of the fuel tank body 14 is prevented.

そして、第１実施形態の上記構造では、横壁２０Ｂが本発明の「第２接触部」の例であり、対向板３４が、本発明の「第２被接触部」の例となっている。したがって、第１実施形態では、上側補強部材２０が本発明の「第１延出部材」の例であり、下側補強部材１８が本発明の「第２延出部材」の例となっている。さらに、第１実施形態では横壁２０Ｂが本発明の「第１接触部」の例であり（「第２接触部」を兼ねている）、横壁１８Ｂが本発明の「第１被接触部」の例となっている。   And in the said structure of 1st Embodiment, the horizontal wall 20B is an example of the "2nd contact part" of this invention, and the opposing board 34 is an example of the "2nd to-be-contacted part" of this invention. Therefore, in the first embodiment, the upper reinforcing member 20 is an example of the “first extending member” of the present invention, and the lower reinforcing member 18 is an example of the “second extending member” of the present invention. . Furthermore, in the first embodiment, the lateral wall 20B is an example of the “first contact portion” of the present invention (also serves as the “second contact portion”), and the lateral wall 18B is the “first contacted portion” of the present invention. It is an example.

次に、第１実施形態の燃料タンク１２の作用を説明する。   Next, the operation of the fuel tank 12 of the first embodiment will be described.

燃料タンク本体１４では、タンク内圧が大気圧と同程度である場合は、膨張あるいは圧縮しない。すなわち、図１に実線で示すように、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂとは大きく湾曲することはなく、略平面の状態である。このとき、図３Ａに示すように、下側補強部材１８の横壁１８Ｂと、上側補強部材２０の横壁２０Ｂの間に、所定の間隔Ｄ１を有する第１間隙２８が構成されている。また、対向部材３０の対向板３４と上側補強部材２０の横壁２０Ｂとの間には、所定の間隔Ｄ２を有する第２間隙４０が構成されている。   The fuel tank body 14 does not expand or compress when the tank internal pressure is about the same as the atmospheric pressure. That is, as indicated by a solid line in FIG. 1, the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are not greatly curved and are in a substantially flat state. At this time, as shown in FIG. 3A, a first gap 28 having a predetermined distance D1 is formed between the lateral wall 18B of the lower reinforcing member 18 and the lateral wall 20B of the upper reinforcing member 20. Further, a second gap 40 having a predetermined distance D <b> 2 is formed between the facing plate 34 of the facing member 30 and the lateral wall 20 </ b> B of the upper reinforcing member 20.

燃料タンク本体１４のタンク内圧が負圧（外部の大気圧に対してタンク内圧が低い状態）になったときは、第１間隙２８が徐々に狭くなりつつ、下側補強部材１８と上側補強部材２０とが接近する。すなわち、図１に二点鎖線１４Ｐで示すように、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの中央部分が互いに接近する方向の湾曲が許容され、燃料タンク本体１４は圧縮変形される。なお、図１では、燃料タンク本体１４の変形の程度を実際よりも大きくして示している。   When the tank internal pressure of the fuel tank main body 14 becomes negative (the tank internal pressure is lower than the external atmospheric pressure), the first gap 28 is gradually narrowed, and the lower reinforcing member 18 and the upper reinforcing member 20 approaches. That is, as shown by a two-dot chain line 14P in FIG. 1, the fuel tank body 14 is allowed to bend in the direction in which the upper wall 14T and the center portion of the lower wall 14B approach each other, and the fuel tank body 14 is compressed and deformed. In FIG. 1, the degree of deformation of the fuel tank body 14 is shown larger than the actual degree.

そして、図３Ｂに示すように、下側補強部材１８の横壁１８Ｂと上側補強部材２０の横壁２０Ｂとの間の第１間隙２８が解消されて横壁１８Ｂと横壁２０Ｂとが接触すると、下側補強部材１８と上側補強部材２０との接近が阻止され、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   3B, when the first gap 28 between the lateral wall 18B of the lower reinforcing member 18 and the lateral wall 20B of the upper reinforcing member 20 is eliminated and the lateral wall 18B and the lateral wall 20B come into contact with each other, the lower reinforcement The approach between the member 18 and the upper reinforcing member 20 is prevented, and the upper wall 14T and the lower wall 14B of the fuel tank body 14 are also prevented from bending.

このように、第１実施形態の燃料タンク１２では、燃料タンク本体１４の負圧時には、図１に二点鎖線１４Ｐで示すように、燃料タンク本体１４の圧縮変形が許容されると共に、この変形量は、第１間隙２８が解消される一定量に制限される。   As described above, in the fuel tank 12 of the first embodiment, when the fuel tank body 14 has a negative pressure, as shown by a two-dot chain line 14P in FIG. The amount is limited to a certain amount at which the first gap 28 is eliminated.

これに対し、燃料タンク本体１４のタンク内圧が正圧（外部の大気圧に対してタンク内圧が高い状態）になったときは、第２間隙４０が徐々に狭くなりつつ、下側補強部材１８と上側補強部材２０とが離間する。すなわち、図１に二点鎖線１４Ｑで示すように、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの中央部分が互いに離間する方向の湾曲が許容され、燃料タンク本体１４が膨張変形される。そして、図３Ｃに示すように、対向板３４と上側補強部材２０の横壁２０Ｂとの間の第２間隙４０が解消されて対向板３４と横壁２０Ｂとが接触すると、下側補強部材１８と上側補強部材２０との離間が阻止され、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂとの湾曲も阻止される。   On the other hand, when the tank internal pressure of the fuel tank main body 14 becomes a positive pressure (a state in which the tank internal pressure is higher than the external atmospheric pressure), the second reinforcing member 18 is gradually narrowed while the second gap 40 is gradually narrowed. And the upper reinforcing member 20 are separated from each other. That is, as indicated by a two-dot chain line 14Q in FIG. 1, the fuel tank body 14 is allowed to bend in the direction in which the central portions of the upper wall 14T and the lower wall 14B of the fuel tank body 14 are separated from each other, and the fuel tank body 14 is expanded and deformed. Then, as shown in FIG. 3C, when the second gap 40 between the opposing plate 34 and the lateral wall 20B of the upper reinforcing member 20 is eliminated and the opposing plate 34 and the lateral wall 20B come into contact, the lower reinforcing member 18 and the upper reinforcing member 18 Separation from the reinforcing member 20 is prevented, and bending of the upper wall 14T and the lower wall 14B of the fuel tank body 14 is also prevented.

このように、第１実施形態の燃料タンク１２では、燃料タンク本体１４の正圧時には、図１に二点鎖線１４Ｑで示すように、燃料タンク本体１４の膨張変形が許容されると共に、この変形量は、第２間隙４０が解消される一定量に制限される。   As described above, in the fuel tank 12 of the first embodiment, when the fuel tank body 14 is positively pressurized, as shown by a two-dot chain line 14Q in FIG. The amount is limited to a certain amount at which the second gap 40 is eliminated.

第１間隙２８は、下側補強部材１８の横壁１８Ｂと、上側補強部材２０の横壁２０Ｂとで構成されている。このため、この間隔Ｄ１を調整することで、燃料タンク本体１４の負圧時における上壁１４Ｔと下壁１４Ｂの変形量を所望の変形量に調整することも可能である。   The first gap 28 includes a lateral wall 18B of the lower reinforcing member 18 and a lateral wall 20B of the upper reinforcing member 20. For this reason, by adjusting the distance D1, it is possible to adjust the deformation amount of the upper wall 14T and the lower wall 14B to a desired deformation amount when the fuel tank body 14 is under negative pressure.

同様に、第２間隙４０は、対向部材３０の対向板３４と下側補強部材１８の横壁１８Ｂとで構成されているので、対向部材３０の形状変更等により、この間隔Ｄ２を調整できる。そしてこれにより、燃料タンク本体１４の正圧時における上壁１４Ｔと下壁１４Ｂの変形量を所望の変形量に調整することも可能である。   Similarly, since the second gap 40 is configured by the opposing plate 34 of the opposing member 30 and the lateral wall 18B of the lower reinforcing member 18, the distance D2 can be adjusted by changing the shape of the opposing member 30 or the like. As a result, it is possible to adjust the deformation amount of the upper wall 14T and the lower wall 14B when the fuel tank body 14 is at a positive pressure to a desired deformation amount.

なお、第１実施形態において、上記では、下側補強部材１８に設けられた対向部材３０が、上側補強部材２０に嵌合している例を挙げたが、これとは逆に、対向部材３０が上側補強部材２０に設けられ、下側補強部材１８に嵌合される構造でもよい。この構造では、上側補強部材２０が本発明の「第２延出部材」の例であり、下側補強部材１８が本発明の「第１延出部材」の例となる。そして、横壁１８Ｂが、本発明の「第１接触部」と「第２接触部」を兼ねた例であり、横壁２０Ｂが、本発明の「第１被接触部」の例となる。要するに、「第１接触部」と「第１被接触部」との関係は相対的であり、同様に、「第２接触部」と「第２被接触部」との関係も相対的である。   In the first embodiment, the example in which the facing member 30 provided on the lower reinforcing member 18 is fitted to the upper reinforcing member 20 is described above, but conversely, the facing member 30 is provided. May be provided on the upper reinforcing member 20 and fitted to the lower reinforcing member 18. In this structure, the upper reinforcing member 20 is an example of the “second extending member” of the present invention, and the lower reinforcing member 18 is an example of the “first extending member” of the present invention. The horizontal wall 18B is an example of the “first contact portion” and the “second contact portion” of the present invention, and the horizontal wall 20B is an example of the “first contacted portion” of the present invention. In short, the relationship between the “first contact portion” and the “first contacted portion” is relative, and similarly, the relationship between the “second contact portion” and the “second contacted portion” is also relative. .

第１実施形態では、対向部材３０が下側補強部材１８又は上側補強部材２０と一体化されているので、対向部材３０が下側補強部材１８及び上側補強部材２０と別体である構成と比較して、部品点数が少なくなり、構造の簡素化を図ることができると共に、対向部材３０の位置を安定的に維持できる。   In the first embodiment, since the opposing member 30 is integrated with the lower reinforcing member 18 or the upper reinforcing member 20, the opposing member 30 is compared with a configuration separate from the lower reinforcing member 18 and the upper reinforcing member 20. Thus, the number of parts is reduced, the structure can be simplified, and the position of the facing member 30 can be stably maintained.

上記では、下側補強部材１８と上側補強部材２０の間に第１間隙２８が構成された例を挙げている。これに対し、たとえば、図４に示す第１実施形態の変形例のように、下側補強部材１８を省略すると共に、上側補強部材２０の横壁１８Ｂを燃料タンク本体１４の下壁１４Ｂに接近させ、横壁１８Ｂと下壁１４Ｂとの間に第１間隙２８が構成される例でもよい。図４に示した変形例では、対向部材３０が、燃料タンク本体１４の下壁１４Ｂに直接的に設けられる。   In the above example, the first gap 28 is formed between the lower reinforcing member 18 and the upper reinforcing member 20. On the other hand, for example, as in the modification of the first embodiment shown in FIG. 4, the lower reinforcing member 18 is omitted, and the lateral wall 18B of the upper reinforcing member 20 is brought closer to the lower wall 14B of the fuel tank body 14. The first gap 28 may be configured between the lateral wall 18B and the lower wall 14B. In the modification shown in FIG. 4, the facing member 30 is provided directly on the lower wall 14 </ b> B of the fuel tank body 14.

次に、本発明の第２実施形態について説明する。   Next, a second embodiment of the present invention will be described.

図５には、第２実施形態の燃料タンク５２が示されている。第２実施形態において、第１実施形態と同一の要素、部材等については同一符号を付して、詳細な説明を省略する。また、第２実施形態において、燃料タンクの全体的構成は、第１実施形態の燃料タンク１２（図１参照）と同様であるので、図示を省略する。   FIG. 5 shows a fuel tank 52 according to the second embodiment. In the second embodiment, the same elements and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the second embodiment, the overall configuration of the fuel tank is the same as that of the fuel tank 12 (see FIG. 1) of the first embodiment, and is not shown.

第２実施形態では、下側補強部材１８と一体化された第１実施形態に係る対向部材３０（図２等参照）は設けられておらず、下側補強部材１８及び上側補強部材２０とは別体の対向部材５４を有している。   In 2nd Embodiment, the opposing member 30 (refer FIG. 2 etc.) which concerns on 1st Embodiment integrated with the lower side reinforcement member 18 is not provided, and the lower side reinforcement member 18 and the upper side reinforcement member 20 are A separate counter member 54 is provided.

第２実施形態の対向部材５４は、円柱状の支柱５６と、この支柱５６の両端（状態及び下端）にそれぞれ形成された円板状の支持板５８及び対向板６０とを有している。   The opposing member 54 of the second embodiment has a columnar column 56 and disk-shaped support plates 58 and an opposing plate 60 formed at both ends (state and lower end) of the column 56, respectively.

第２実施形態では、下側補強部材１８の横壁１８Ｂと、上側補強部材２０の横壁２０Ｂの両方に、それぞれ嵌合孔６２、６４及び挿入スリット６６、６８が形成されている。嵌合孔６２、６４及び挿入スリット６６、６８は、横壁１８Ｂ、２０Ｂの法線方向（上下方向）に見て同一位置に同一形状で形成されている。具体的には、嵌合孔６２、６４の内径は支柱５６の外径よりもわずかに大きくされており、支柱５６（対向部材５４）は、横壁１８Ｂ、２０Ｂに対し相対的に上下動可能である。   In the second embodiment, fitting holes 62 and 64 and insertion slits 66 and 68 are formed in both the lateral wall 18B of the lower reinforcing member 18 and the lateral wall 20B of the upper reinforcing member 20, respectively. The fitting holes 62 and 64 and the insertion slits 66 and 68 are formed in the same shape at the same position when viewed in the normal direction (vertical direction) of the lateral walls 18B and 20B. Specifically, the inner diameters of the fitting holes 62 and 64 are slightly larger than the outer diameter of the column 56, and the column 56 (opposing member 54) can move up and down relatively with respect to the lateral walls 18B and 20B. is there.

挿入スリット６６、６８は、嵌合孔６２、６４と、横壁１８Ｂ、２０Ｂの外部とを連通しており、外部との連通部分は挿入開口６６Ｋ、６８Ｋとなっている。これらの開口６６Ｋ、６８Ｋから支柱５６を挿入スリット６６、６８に挿入し、嵌合孔６２、６４に嵌合させることができる。特に、第２実施形態では、挿入スリット６６、６８の挿入開口６６Ｋ、６８Ｋが同方向で開口されている。   The insertion slits 66 and 68 communicate with the fitting holes 62 and 64 and the outside of the lateral walls 18B and 20B, and portions communicating with the outside are insertion openings 66K and 68K. The support column 56 can be inserted into the insertion slits 66 and 68 from these openings 66K and 68K and can be fitted into the fitting holes 62 and 64. In particular, in the second embodiment, the insertion openings 66K and 68K of the insertion slits 66 and 68 are opened in the same direction.

第２実施形態の構造では、上側補強部材２０が本発明の「第２延出部材」の例であり、下側補強部材１８が本発明の「第１延出部材」の例となっている。そして、横壁１８Ｂが、本発明の「第１接触部」と「第２接触部」を兼ねた例であり、横壁２０Ｂが、本発明の「第１被接触部」の例となっている。   In the structure of the second embodiment, the upper reinforcing member 20 is an example of the “second extending member” of the present invention, and the lower reinforcing member 18 is an example of the “first extending member” of the present invention. . The lateral wall 18B serves as an example of the “first contact portion” and the “second contact portion” in the present invention, and the lateral wall 20B serves as an example of the “first contacted portion” in the present invention.

第２実施形態の燃料タンク５２において、燃料タンク１２のタンク内圧が大気圧と同程度である場合は、燃料タンク本体１４は膨張あるいは圧縮しない。このとき、図６Ａに示すように、対向部材５４は重力により、支持板５８が上側補強部材２０の横壁２０Ｂに接触する位置まで下がった状態で支持されている。実質的に、上側補強部材２０に対向部材５４が設けられた構造となっている。そして、対向板６０と下側補強部材１８の横壁１８Ｂの間に第２間隙４０が構成されている。   In the fuel tank 52 of the second embodiment, when the tank internal pressure of the fuel tank 12 is about the same as the atmospheric pressure, the fuel tank body 14 does not expand or compress. At this time, as shown in FIG. 6A, the opposing member 54 is supported in a state where the supporting plate 58 is lowered to a position where it contacts the lateral wall 20 </ b> B of the upper reinforcing member 20 due to gravity. The upper reinforcing member 20 is substantially provided with a counter member 54. A second gap 40 is formed between the opposing plate 60 and the lateral wall 18B of the lower reinforcing member 18.

第２実施形態において、燃料タンク本体１４のタンク内圧が負圧になったときは、第１実施形態と同様に、第１間隙２８が徐々に狭くなりつつ、下側補強部材１８と上側補強部材２０とが接近する。これにより、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が互いに接近する方向の湾曲が許容される。図６Ｂに示すように、下側補強部材１８の横壁１８Ｂと上側補強部材２０の横壁２０Ｂとの間の第１間隙２８が解消されて横壁１８Ｂと横壁２０Ｂとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the second embodiment, when the tank internal pressure of the fuel tank body 14 becomes a negative pressure, the first gap 28 is gradually narrowed and the lower reinforcing member 18 and the upper reinforcing member are reduced as in the first embodiment. 20 approaches. Thereby, the curve of the direction in which each center part of the upper wall 14T of the fuel tank main body 14 and the lower wall 14B approaches is accept | permitted. As shown in FIG. 6B, when the first gap 28 between the lateral wall 18B of the lower reinforcing member 18 and the lateral wall 20B of the upper reinforcing member 20 is eliminated and the lateral wall 18B and the lateral wall 20B come into contact with each other, The curvature of the upper wall 14T and the lower wall 14B is also prevented.

第２実施形態において、燃料タンク本体１４のタンク内圧が正圧になったときは、第２間隙４０が徐々に狭くなりつつ、下側補強部材１８と上側補強部材２０とが離間する。これにより、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が高いに離間する方向の湾曲が許容される。図６Ｃに示すように、対向板６０と下側補強部材１８の横壁１８Ｂとの間の第２間隙４０が解消されて対向板６０と横壁１８Ｂとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the second embodiment, when the tank internal pressure of the fuel tank main body 14 becomes a positive pressure, the lower reinforcing member 18 and the upper reinforcing member 20 are separated while the second gap 40 is gradually narrowed. Thereby, the curve of the direction in which each center part of the upper wall 14T of the fuel tank main body 14 and the lower wall 14B is spaced apart high is permitted. As shown in FIG. 6C, when the second gap 40 between the opposing plate 60 and the lateral wall 18B of the lower reinforcing member 18 is eliminated and the opposing plate 60 and the lateral wall 18B come into contact with each other, the upper wall 14T of the fuel tank main body 14 is contacted. And the curvature of the lower wall 14B is also prevented.

すなわち、第２実施形態の燃料タンク５２においても、燃料タンク本体１４の負圧時には、燃料タンク本体１４の圧縮変形が許容され、この変形量は、第１間隙２８が解消される一定量に制限される。また、燃料タンク本体１４の正圧時には、燃料タンク本体１４の膨張変形が許容され、この変形量は、第２間隙４０が解消される一定量に制限される。   That is, also in the fuel tank 52 of the second embodiment, when the fuel tank main body 14 is under negative pressure, the fuel tank main body 14 is allowed to undergo compressive deformation, and the amount of deformation is limited to a certain amount that eliminates the first gap 28. Is done. Further, when the fuel tank main body 14 is at a positive pressure, expansion deformation of the fuel tank main body 14 is allowed, and the deformation amount is limited to a certain amount that eliminates the second gap 40.

しかも第２実施形態では、下側補強部材１８及び上側補強部材２０とは別体の対向部材５４を、挿入スリット６６、６８から嵌合孔６２に嵌合させる構造である。すなわち、下側補強部材１８と上側補強部材２０とを、横壁１８Ｂ、２０Ｂが第１間隙２８を構成する位置となるよう対向させた状態で、対向部材５４を嵌合孔６２に嵌合させるので、嵌合作業が容易である。   Moreover, in the second embodiment, the opposing member 54 that is separate from the lower reinforcing member 18 and the upper reinforcing member 20 is fitted into the fitting hole 62 from the insertion slits 66 and 68. That is, the opposing member 54 is fitted into the fitting hole 62 in a state where the lower reinforcing member 18 and the upper reinforcing member 20 are opposed to each other so that the lateral walls 18B and 20B are positioned at the first gap 28. The mating operation is easy.

特に、下側補強部材１８の挿入スリット６６と、上側補強部材２０の挿入スリット６８とで、挿入開口６６Ｋ、６８Ｋの開口方向が同じである。このため、対向部材５４を挿入開口６６Ｋ、６８Ｋから嵌合孔６２に向けて一方向にスライドさせるだけで、嵌合孔６２に嵌合させることができる。   In particular, the insertion openings 66K and 68K have the same opening direction in the insertion slit 66 of the lower reinforcing member 18 and the insertion slit 68 of the upper reinforcing member 20. For this reason, the opposing member 54 can be fitted into the fitting hole 62 only by sliding in one direction from the insertion openings 66K and 68K toward the fitting hole 62.

第２実施形態において、嵌合孔６４の内径を支柱５６の外径よりもわずかに小さくし、支柱５６に密着して保持する（対向部材５４が上側補強部材２０に固定される）構造でもよい。   In the second embodiment, a structure in which the inner diameter of the fitting hole 64 is slightly smaller than the outer diameter of the column 56 and is held in close contact with the column 56 (the opposing member 54 is fixed to the upper reinforcing member 20). .

次に、本発明の第３実施形態について説明する。   Next, a third embodiment of the present invention will be described.

図７には、第３実施形態の燃料タンク７２が示されている。第３実施形態においても、第１実施形態と同一の要素、部材等については同一符号を付して、詳細な説明を省略する。また、第３実施形態において、燃料タンクの全体的構成は、第１実施形態の燃料タンク１２（図１参照）と同様であるので、図示を省略する。   FIG. 7 shows a fuel tank 72 according to the third embodiment. Also in the third embodiment, the same elements and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Further, in the third embodiment, the overall configuration of the fuel tank is the same as that of the fuel tank 12 (see FIG. 1) of the first embodiment, and thus illustration is omitted.

第３実施形態では、燃料タンク本体１４の下壁１４Ｂから上壁１４Ｔに向けて下側補強部材７４が延出され、上壁１４Ｔから下壁１４Ｂに向けて上側補強部材７６が延出されている。そして、横方向（車両前後方向）に見たとき、下側補強部材７４と上側補強部材７６とが部分的に重なる重なり部７８が構成されている。   In the third embodiment, the lower reinforcing member 74 extends from the lower wall 14B of the fuel tank body 14 toward the upper wall 14T, and the upper reinforcing member 76 extends from the upper wall 14T toward the lower wall 14B. Yes. When viewed in the lateral direction (vehicle longitudinal direction), an overlapping portion 78 is formed in which the lower reinforcing member 74 and the upper reinforcing member 76 partially overlap.

図７に示した例では、下側補強部材７４は筒状に形成され、上側補強部材７６も筒状に形成されている。そして、上側補強部材７６が下側補強部材７４の内側に入る形状である。なお、これとは逆に、下側補強部材７４が上側補強部材７６の内側に入る形状でもよい。さらに、下側補強部材７４と上側補強部材７６の少なくとも一方を板状に形成してもよい。   In the example shown in FIG. 7, the lower reinforcing member 74 is formed in a cylindrical shape, and the upper reinforcing member 76 is also formed in a cylindrical shape. The upper reinforcing member 76 has a shape that enters the lower reinforcing member 74. On the contrary, the shape in which the lower reinforcing member 74 enters the inner side of the upper reinforcing member 76 may be adopted. Furthermore, at least one of the lower reinforcing member 74 and the upper reinforcing member 76 may be formed in a plate shape.

重なり部７８では、下側補強部材７４と上側補強部材７６のいずれか一方に固定孔８０が形成され、他方に挿入孔８２が形成されている。図７に示した例では、下側補強部材７４に固定孔８０が形成され、上側補強部材７６に挿入孔８２が形成されている。下側補強部材７４は筒状に形成されているので、図８Ａから分かるように、固定孔８０は互いに対向するように２つ形成されている。同様に、上側補強部材７６も筒状に形成されているので、挿入孔８２は、互いに対向するように２つ形成されている。   In the overlapping portion 78, a fixing hole 80 is formed in one of the lower reinforcing member 74 and the upper reinforcing member 76, and an insertion hole 82 is formed in the other. In the example shown in FIG. 7, a fixing hole 80 is formed in the lower reinforcing member 74, and an insertion hole 82 is formed in the upper reinforcing member 76. Since the lower reinforcing member 74 is formed in a cylindrical shape, two fixing holes 80 are formed so as to face each other as can be seen from FIG. 8A. Similarly, since the upper reinforcing member 76 is also formed in a cylindrical shape, two insertion holes 82 are formed so as to face each other.

固定孔８０及び挿入孔８２には、挿入部材８４が挿入されている。挿入部材８４は、円柱状の挿入円柱部８６と、この挿入円柱部８６の一端を拡径した抜け止め円板部８８及び、挿入円柱部８６の他端側に設けられた抜け止めピン９０を有している。   An insertion member 84 is inserted into the fixing hole 80 and the insertion hole 82. The insertion member 84 includes a cylindrical insertion column part 86, a retaining disk part 88 having an enlarged diameter at one end of the insertion cylinder part 86, and a retaining pin 90 provided on the other end side of the insertion cylinder part 86. Have.

第３実施形態では、固定孔８０と挿入孔８２とを位置合わせした状態で、固定孔８０及び挿入孔８２に挿入円柱部８６が挿入される。   In the third embodiment, the insertion cylindrical portion 86 is inserted into the fixing hole 80 and the insertion hole 82 in a state where the fixing hole 80 and the insertion hole 82 are aligned.

固定孔８０の内径は、挿入円柱部８６の外径よりもわずかに大きく、抜け止め円板部８８の外径よりも小さく設定されている。したがって、挿入円柱部８６の一端側は抜け止め円板部８８によって抜け止めされる。また、挿入円柱部８６の他端側は、抜け止めピン９０が装着されて抜け止めされる。そして、挿入部材８４は、下側補強部材１８に対しては上下方向に相対移動しないか、若しくは相対移動しても移動量はわずかとなるように、下側補強部材７４に保持される。   The inner diameter of the fixing hole 80 is set to be slightly larger than the outer diameter of the insertion column part 86 and smaller than the outer diameter of the retaining disk part 88. Accordingly, the one end side of the insertion cylindrical portion 86 is prevented from being detached by the retaining disc portion 88. Further, a retaining pin 90 is attached to the other end side of the insertion cylindrical portion 86 to prevent it from coming off. The insertion member 84 is held by the lower reinforcing member 74 so that the insertion member 84 does not move relative to the lower reinforcing member 18 in the vertical direction, or the moving amount becomes small even if the moving relative.

挿入孔８２は、上下方向に長い長円状に形成されており、挿入孔８２の幅（内寸）は、挿入円柱部８６の外径よりもわずかに大きい。したがって、上側補強部材７６に対する挿入部材８４の横ズレは抑制されている。   The insertion hole 82 is formed in an oval shape that is long in the vertical direction, and the width (inner dimension) of the insertion hole 82 is slightly larger than the outer diameter of the insertion column part 86. Accordingly, the lateral displacement of the insertion member 84 with respect to the upper reinforcing member 76 is suppressed.

これに対し、挿入孔８２の高さ（内寸）は、幅よりも大きく形成されている。そして、挿入孔８２の上壁８２Ｕと挿入円柱部８６との間に、第１間隙２８が構成されている。また、挿入孔８２の下壁８２Ｌと挿入円柱部８６との間に、第２間隙４０が構成されている。   On the other hand, the height (inner dimension) of the insertion hole 82 is formed larger than the width. A first gap 28 is formed between the upper wall 82U of the insertion hole 82 and the insertion column portion 86. Further, the second gap 40 is formed between the lower wall 82L of the insertion hole 82 and the insertion column part 86.

第３実施形態において、燃料タンク本体１４のタンク内圧が負圧になったときは、第１間隙２８が徐々に狭くなり（第２間隙４０は広がり）つつ、下側補強部材７４と上側補強部材７６の重なり部７８が広くなる。そして、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が互いに接近する方向の湾曲が許容される。図８Ｂに示すように、挿入孔８２の上壁８２Ｕと挿入円柱部８６との間の第１間隙２８が解消されて上壁８２Ｕと挿入円柱部８６とが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the third embodiment, when the tank internal pressure of the fuel tank main body 14 becomes a negative pressure, the first gap 28 gradually narrows (the second gap 40 widens), while the lower reinforcing member 74 and the upper reinforcing member. The overlapping portion 78 of 76 becomes wide. And the curve of the direction in which each center part of the upper wall 14T of the fuel tank main body 14 and the lower wall 14B approaches mutually is accept | permitted. As shown in FIG. 8B, when the first gap 28 between the upper wall 82U of the insertion hole 82 and the insertion cylindrical portion 86 is eliminated and the upper wall 82U and the insertion cylindrical portion 86 contact, The bending of the wall 14T and the lower wall 14B is also prevented.

第３実施形態において、燃料タンク本体１４のタンク内圧が正圧になったときは、第２間隙４０が徐々に狭くなり（第１間隙２８は広がり）つつ、下側補強部材７４と上側補強部材７６の重なり部７８が狭くなる。そして、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が互いに離間する方向の湾曲が許容される。図８Ｃに示すように、挿入孔８２の下壁８２Ｌと挿入円柱部８６との間の第２間隙４０が解消されて下壁８２Ｌと挿入円柱部８６とが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the third embodiment, when the tank internal pressure of the fuel tank body 14 becomes positive, the second gap 40 gradually narrows (the first gap 28 widens), while the lower reinforcing member 74 and the upper reinforcing member. The overlapping portion 78 of 76 becomes narrow. Further, the bending in the direction in which the central portions of the upper wall 14T and the lower wall 14B of the fuel tank body 14 are separated from each other is allowed. As shown in FIG. 8C, when the second gap 40 between the lower wall 82L of the insertion hole 82 and the insertion cylindrical portion 86 is eliminated and the lower wall 82L and the insertion cylindrical portion 86 contact, The bending of the wall 14T and the lower wall 14B is also prevented.

すなわち、第３実施形態の燃料タンク７２においても、燃料タンク本体１４の負圧時には、燃料タンク本体１４の圧縮変形が許容され、この変形量は、第１間隙２８が解消される一定量に制限される。また、燃料タンク本体１４の正圧時には、燃料タンク本体１４の膨張変形が許容され、この変形量は、第２間隙４０が解消される一定量に制限される。   That is, also in the fuel tank 72 of the third embodiment, when the fuel tank main body 14 is under negative pressure, the fuel tank main body 14 is allowed to undergo compressive deformation, and the amount of deformation is limited to a certain amount that eliminates the first gap 28. Is done. Further, when the fuel tank main body 14 is at a positive pressure, expansion deformation of the fuel tank main body 14 is allowed, and the deformation amount is limited to a certain amount that eliminates the second gap 40.

上記では、挿入部材８４を下側補強部材７４及び上側補強部材７６と別体で形成した構造を挙げているが、挿入部材８４が、たとえば上側補強部材７６と一体化されていてもよい。挿入部材８４を下側補強部材７４及び上側補強部材７６と別体にしておくと、一体化された構造よりも組み付けが容易である。   In the above description, the insertion member 84 is formed separately from the lower reinforcing member 74 and the upper reinforcing member 76. However, the inserting member 84 may be integrated with the upper reinforcing member 76, for example. If the insertion member 84 is separated from the lower reinforcing member 74 and the upper reinforcing member 76, the assembly is easier than the integrated structure.

第３実施形態では、挿入部材８４の形状（挿入円柱部８６の外径）及び位置や、挿入孔８２の形状（高さ）を変更することで、第１間隙２８及び第２間隙４０の長さを所望の長さに設定することが容易である。   In the third embodiment, the lengths of the first gap 28 and the second gap 40 are changed by changing the shape (the outer diameter of the insertion cylindrical portion 86) and position of the insertion member 84 and the shape (height) of the insertion hole 82. It is easy to set the length to a desired length.

次に、本発明の第４実施形態について説明する。   Next, a fourth embodiment of the present invention will be described.

図９には、第４実施形態の燃料タンク１０２が示されている。第４実施形態においても、第１実施形態と同一の要素、部材等については同一符号を付して、詳細な説明を省略する。また、第４実施形態において、燃料タンクの全体的構成は、第１実施形態の燃料タンク１２（図１参照）と同様であるので、図示を省略する。   FIG. 9 shows a fuel tank 102 according to the fourth embodiment. Also in 4th Embodiment, the same code | symbol is attached | subjected about the same element, member, etc. as 1st Embodiment, and detailed description is abbreviate | omitted. Further, in the fourth embodiment, the overall configuration of the fuel tank is the same as that of the fuel tank 12 (see FIG. 1) of the first embodiment, and thus illustration is omitted.

第４実施形態では、燃料タンク本体１４の下壁１４Ｂから上壁１４Ｔに向けて延出された下側補強部材１０４に、上方に向かって斜めに傾斜する傾斜壁１０４Ａと、この傾斜壁１０４Ａの下側で略水平な水平壁１０４Ｂとが形成されている。   In the fourth embodiment, the lower reinforcing member 104 extending from the lower wall 14B to the upper wall 14T from the lower wall 14B of the fuel tank main body 14 has an inclined wall 104A inclined obliquely upward, and the inclined wall 104A. A substantially horizontal horizontal wall 104B is formed on the lower side.

これに対し、燃料タンク本体１４の上壁１４Ｔから下壁１４Ｂに延出された上側補強部材１０６には、下方に向かって斜めに傾斜する傾斜壁１０６Ａと、この傾斜壁１０６Ａの上側で略水平な水平壁１０６Ｄとが形成されている。   On the other hand, the upper reinforcing member 106 extended from the upper wall 14T to the lower wall 14B of the fuel tank main body 14 includes an inclined wall 106A inclined obliquely downward, and substantially horizontal above the inclined wall 106A. A horizontal wall 106D is formed.

上側補強部材１０６の先端（下端）の横壁１０６Ｃは、燃料タンク本体１４の下壁１４Ｂとの間に所定の間隔Ｄ１をあけて対向しており、第１間隙２８を構成している。すなわち、第４実施形態では、横壁１０６Ｃは本発明の間隙部材の一例である。   A lateral wall 106C at the tip (lower end) of the upper reinforcing member 106 is opposed to the lower wall 14B of the fuel tank body 14 with a predetermined distance D1 to form a first gap 28. That is, in the fourth embodiment, the lateral wall 106C is an example of the gap member of the present invention.

また、水平壁１０４Ｂと水平壁１０６Ｂとは、所定の間隔Ｄ２をあけて互いに対向しており、第２間隙４０を構成している。水平壁１０４Ｂと水平壁１０６Ｂとは、本発明の第２間隙部の一例である。   Further, the horizontal wall 104B and the horizontal wall 106B are opposed to each other with a predetermined distance D2, and constitute a second gap 40. The horizontal wall 104B and the horizontal wall 106B are examples of the second gap portion of the present invention.

第４実施形態において、燃料タンク本体１４のタンク内圧が負圧になったときは、第１間隙２８が徐々に解消され、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が互いに接近する方向の湾曲が許容される。そして、上側補強部材１０６の横壁１０６Ｃと燃料タンク本体１４の下壁１４Ｂとの間の第１間隙２８が解消されて横壁１０６Ｃと下壁１４Ｂと接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲が阻止される。   In the fourth embodiment, when the tank internal pressure of the fuel tank main body 14 becomes negative, the first gap 28 is gradually eliminated, and the central portions of the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are Curvature in directions approaching each other is allowed. When the first gap 28 between the lateral wall 106C of the upper reinforcing member 106 and the lower wall 14B of the fuel tank body 14 is eliminated and comes into contact with the lateral wall 106C and the lower wall 14B, the upper wall 14T and the lower wall 14T of the fuel tank body 14 are moved downward. The curvature of the wall 14B is prevented.

第４実施形態において、燃料タンク本体１４のタンク内圧が正圧になったときは、第２間隙４０が徐々に解消され、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が互いに離間する方向の湾曲が許容される。そして、水平壁１０４Ｂと水平壁１０６Ｄとの間の第２間隙４０が解消されて水平壁１０４Ｂと水平壁１０６Ｄとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the fourth embodiment, when the tank internal pressure of the fuel tank body 14 becomes a positive pressure, the second gap 40 is gradually eliminated, and the central portions of the upper wall 14T and the lower wall 14B of the fuel tank body 14 are Curvature in directions away from each other is allowed. When the second gap 40 between the horizontal wall 104B and the horizontal wall 106D is eliminated and the horizontal wall 104B and the horizontal wall 106D come into contact with each other, the curvature of the upper wall 14T and the lower wall 14B of the fuel tank body 14 is also prevented. The

すなわち、第４実施形態の燃料タンク７２においても、燃料タンク本体１４の負圧時には、燃料タンク本体１４の圧縮変形が許容され、この変形量は、第１間隙２８が解消される一定量に制限される。また、燃料タンク本体１４の正圧時には、燃料タンク本体１４の膨張変形が許容され、この変形量は、第２間隙４０が解消される一定量に制限される。   That is, also in the fuel tank 72 of the fourth embodiment, when the fuel tank body 14 is under negative pressure, the fuel tank body 14 is allowed to be compressed and deformed, and the amount of deformation is limited to a certain amount that eliminates the first gap 28. Is done. Further, when the fuel tank main body 14 is at a positive pressure, expansion deformation of the fuel tank main body 14 is allowed, and the deformation amount is limited to a certain amount that eliminates the second gap 40.

なお、第４実施形態において、図９に示した例では、第１間隙２８が、上側補強部材１０６の横壁１０６Ｃと、燃料タンク本体１４の下壁１４Ｂとの間に構成されている。これに代えて、たとえば、下側補強部材１０４の先端（上端）横壁１０４Ｃと燃料タンク本体１４の上壁１４Ｔとの間に第１間隙２８が構成されるような下側補強部材１０４の形状であってもよい。   In the fourth embodiment, in the example shown in FIG. 9, the first gap 28 is configured between the lateral wall 106 </ b> C of the upper reinforcing member 106 and the lower wall 14 </ b> B of the fuel tank body 14. Instead, for example, the shape of the lower reinforcing member 104 is such that the first gap 28 is formed between the tip (upper end) lateral wall 104C of the lower reinforcing member 104 and the upper wall 14T of the fuel tank body 14. There may be.

また、下側補強部材１０４及び上側補強部材１０６の位置及び形状によっては、横壁１０６Ｃと、下側補強部材１０４の取付フランジ２２との間に第１間隙２８が構成されていてもよい。   Further, depending on the position and shape of the lower reinforcing member 104 and the upper reinforcing member 106, the first gap 28 may be formed between the lateral wall 106 </ b> C and the mounting flange 22 of the lower reinforcing member 104.

次に、本発明の第５実施形態について説明する。   Next, a fifth embodiment of the present invention will be described.

図１０には、第５実施形態の燃料タンク１１２が示されている。第５実施形態においても、第１実施形態と同一の要素、部材等については同一符号を付して、詳細な説明を省略する。また、第５実施形態において、燃料タンクの全体的構成は、第１実施形態の燃料タンク１２（図１参照）と同様であるので、図示を省略する。   FIG. 10 shows a fuel tank 112 according to the fifth embodiment. Also in the fifth embodiment, the same elements and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Further, in the fifth embodiment, the overall configuration of the fuel tank is the same as that of the fuel tank 12 (see FIG. 1) of the first embodiment, and thus illustration is omitted.

第５実施形態では、燃料タンク本体１４の下壁１４Ｂから上壁１４Ｔに向けて下側補強部材１１４が延出され、上壁１４Ｔから下壁１４Ｂに向けて上側補強部材１１６が延出されている。横方向で見て下側補強部材１１４と上側補強部材１１６の間には、重なり部１１８が構成されている。   In the fifth embodiment, the lower reinforcing member 114 extends from the lower wall 14B of the fuel tank body 14 toward the upper wall 14T, and the upper reinforcing member 116 extends from the upper wall 14T toward the lower wall 14B. Yes. An overlapping portion 118 is formed between the lower reinforcing member 114 and the upper reinforcing member 116 when viewed in the lateral direction.

図１０に示した例では、下側補強部材１１４及び上側補強部材１１６を円筒状とし、上側補強部材１１６が下側補強部材１１４の内側に入る形状である。これとは逆に、下側補強部材１１４が上側補強部材１１６の内側に入る形状でもよい。さらに、下側補強部材１１４と上側補強部材１１６の少なくとも一方を板状に形成してもよい。   In the example shown in FIG. 10, the lower reinforcing member 114 and the upper reinforcing member 116 are formed in a cylindrical shape, and the upper reinforcing member 116 enters the inside of the lower reinforcing member 114. On the contrary, the shape in which the lower reinforcing member 114 enters the inner side of the upper reinforcing member 116 may be used. Furthermore, at least one of the lower reinforcing member 114 and the upper reinforcing member 116 may be formed in a plate shape.

下側補強部材１１４の先端（上縁１１４Ｕ）は、燃料タンク本体１４の上壁１４Ｔ又は取付フランジ２２との間に所定の間隔Ｄ１をあけて対向しており、第１間隙２８が構成されている。   The front end (upper edge 114U) of the lower reinforcing member 114 is opposed to the upper wall 14T of the fuel tank body 14 or the mounting flange 22 with a predetermined distance D1, and a first gap 28 is formed. Yes.

重なり部１１８では、下側補強部材１１４と上側補強部材１１６のいずれか一方（図１０の例では下側補強部材１１４）に、収容孔１２０が形成されている。下側補強部材１１４と上側補強部材１１６の他方（図示の例では上側補強部材１１６）には、収容孔１２０に収容される収容爪１２２が形成されている。   In the overlapping portion 118, an accommodation hole 120 is formed in one of the lower reinforcing member 114 and the upper reinforcing member 116 (the lower reinforcing member 114 in the example of FIG. 10). An accommodation claw 122 accommodated in the accommodation hole 120 is formed on the other of the lower reinforcement member 114 and the upper reinforcement member 116 (upper reinforcement member 116 in the illustrated example).

収容爪１２２は、燃料タンク本体１４の下壁１４Ｂに向かって斜めに傾斜する傾斜面１２２Ａと、燃料タンク本体１４の上壁１４Ｔと略平行な対向面１２２Ｂとが形成されている。そして、対向面１２２Ｂと収容孔１２０の上縁１２０Ｕとの間に、第２間隙４０が構成されている。   The housing claw 122 is formed with an inclined surface 122A that is inclined obliquely toward the lower wall 14B of the fuel tank body 14 and an opposing surface 122B that is substantially parallel to the upper wall 14T of the fuel tank body 14. A second gap 40 is formed between the facing surface 122 </ b> B and the upper edge 120 </ b> U of the accommodation hole 120.

なお、図示の例では、上側補強部材１１６において、収容爪１２２の両側に撓みスリット１２４を設け、収容爪１２２が形成された周囲に、撓み部１２６を形成している。また、収容爪１２２には、前述の傾斜面１２２Ａが形成されている。上側補強部材１１６を下側補強部材１１４に挿入するとき、傾斜面１２２Ａが下側補強部材１１４に接触し、撓み部１２６が撓むことで、この挿入が容易になる。そして、収容爪１２２が収容孔１２０に至ると撓み部１２６が復元し、第２間隙４０が構成される。   In the illustrated example, the upper reinforcing member 116 is provided with bending slits 124 on both sides of the receiving claw 122, and a bent portion 126 is formed around the receiving claw 122. The accommodating claw 122 is formed with the aforementioned inclined surface 122A. When the upper reinforcing member 116 is inserted into the lower reinforcing member 114, the inclined surface 122A comes into contact with the lower reinforcing member 114, and the bending portion 126 bends to facilitate the insertion. Then, when the receiving claw 122 reaches the receiving hole 120, the bending portion 126 is restored, and the second gap 40 is formed.

第５実施形態において、燃料タンク本体１４のタンク内圧が負圧になったときは、第１間隙２８が徐々に解消され、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が互いに接近する方向の湾曲が許容される。そして、下側補強部材１１４の上縁１２０Ｕと燃料タンク本体１４の上壁１４Ｔ又は取付フランジ２２との間の第１間隙２８が解消されて、下側補強部材１１４の上縁１２０Ｕと燃料タンク本体１４の上壁１４Ｔ又は取付フランジ２２とが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲が阻止される。   In the fifth embodiment, when the tank internal pressure of the fuel tank body 14 becomes negative, the first gap 28 is gradually eliminated, and the central portions of the upper wall 14T and the lower wall 14B of the fuel tank body 14 are Curvature in directions approaching each other is allowed. Then, the first gap 28 between the upper edge 120U of the lower reinforcing member 114 and the upper wall 14T or the mounting flange 22 of the fuel tank main body 14 is eliminated, and the upper edge 120U of the lower reinforcing member 114 and the fuel tank main body are removed. When the upper wall 14T of 14 or the mounting flange 22 comes into contact, the upper wall 14T and the lower wall 14B of the fuel tank body 14 are prevented from bending.

第５実施形態において、燃料タンク本体１４のタンク内圧が正圧になったときは、第２間隙４０が徐々に解消され、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂのそれぞれの中央部分が互いに離間する方向の湾曲が許容される。そして、収容爪１２２の対向面１２２Ｂと収容孔１２０の上縁１２０Ｕとの間の第２間隙４０が解消されて対向面１２２Ｂと上縁１２０Ｕとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the fifth embodiment, when the tank internal pressure of the fuel tank main body 14 becomes a positive pressure, the second gap 40 is gradually eliminated, and the central portions of the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are Curvature in directions away from each other is allowed. When the second gap 40 between the facing surface 122B of the housing claw 122 and the upper edge 120U of the housing hole 120 is eliminated and the facing surface 122B and the upper edge 120U come into contact with each other, the upper wall 14T of the fuel tank body 14 and The curvature of the lower wall 14B is also prevented.

すなわち、第５実施形態の燃料タンク１１２においても、燃料タンク本体１４の負圧時には、燃料タンク本体１４の圧縮変形が許容され、この変形量は、第１間隙２８が解消される一定量に制限される。また、燃料タンク本体１４の正圧時には、燃料タンク本体１４の膨張変形が許容され、この変形量は、第２間隙４０が解消される一定量に制限される。   That is, also in the fuel tank 112 of the fifth embodiment, the compression deformation of the fuel tank main body 14 is allowed when the fuel tank main body 14 is under negative pressure, and this deformation amount is limited to a certain amount that eliminates the first gap 28. Is done. Further, when the fuel tank main body 14 is at a positive pressure, expansion deformation of the fuel tank main body 14 is allowed, and the deformation amount is limited to a certain amount that eliminates the second gap 40.

なお、第５実施形態において、図１０に示した例では、第１間隙２８が、下側補強部材１１４の上縁１１４Ｕと、燃料タンク本体１４の上壁１４Ｔとの間に構成されている。これに代えて、たとえば、上側補強部材１１６の先端（下端）の下縁１１６Ｂと燃料タンク本体１４の下壁１４Ｂとの間に第１間隙２８が構成されていてもよい。   In the fifth embodiment, in the example shown in FIG. 10, the first gap 28 is formed between the upper edge 114 </ b> U of the lower reinforcing member 114 and the upper wall 14 </ b> T of the fuel tank body 14. Instead, for example, the first gap 28 may be formed between the lower edge 116B of the tip (lower end) of the upper reinforcing member 116 and the lower wall 14B of the fuel tank body 14.

また、下側補強部材１１４及び上側補強部材１１６の形状及び位置によっては、下側補強部材１１４の上縁１１４Ｕと上側補強部材１１６の取付フランジ２２の間に第１間隙２８が構成されていてもよい。   Further, depending on the shape and position of the lower reinforcing member 114 and the upper reinforcing member 116, the first gap 28 may be formed between the upper edge 114U of the lower reinforcing member 114 and the mounting flange 22 of the upper reinforcing member 116. Good.

上記各実施形態では、本発明の構造部材として、１つの下側補強部材と１つの上側補強部材を有する例に挙げたが、第１間隙２８及び第２間隙４０を構成する構造は上記に限定されない。たとえば、さらに他の延出部材を追加し、第１間隙２８と第２間隙４０のいずれか一方を、追加した延出部材によって構成してもよい。   In each of the above embodiments, the structural member of the present invention has been described as an example having one lower reinforcing member and one upper reinforcing member, but the structure constituting the first gap 28 and the second gap 40 is limited to the above. Not. For example, another extension member may be added, and one of the first gap 28 and the second gap 40 may be configured by the added extension member.

一例として、図１１に示す第４実施形態の変形例では、下側補強部材１０４の水平壁１０４Ｂと上側補強部材１０６の水平壁１０６Ｂの間に第２間隙４０が構成されている。   As an example, in the modification of the fourth embodiment shown in FIG. 11, the second gap 40 is formed between the horizontal wall 104 </ b> B of the lower reinforcing member 104 and the horizontal wall 106 </ b> B of the upper reinforcing member 106.

しかし、下側補強部材１０４の横壁１０４Ｃは燃料タンク本体１４の上壁１４Ｔから大きく離れた位置にあり、第１間隙２８は構成されていない。同様に、上側補強部材１０６の横壁１０６Ｃも燃料タンク本体１４の下壁１４Ｂから大きく離れた位置にあり、第１間隙２８は構成されていない。   However, the lateral wall 104C of the lower reinforcing member 104 is located far away from the upper wall 14T of the fuel tank body 14, and the first gap 28 is not configured. Similarly, the lateral wall 106C of the upper reinforcing member 106 is also located far away from the lower wall 14B of the fuel tank body 14, and the first gap 28 is not configured.

第４実施形態の変形例では、燃料タンク本体１４の下壁１４Ｂから上壁１４Ｔに向かって、さらに下側補強部材１８が延出されると共に、上壁１４Ｔから下壁１４Ｂに向かって、さらに上側補強部材２０が延出されている。そして、この下側補強部材１８の横壁１８Ｂと、上側補強部材２０の横壁２０Ｂの間に、第１間隙２８が構成されている。   In the modification of the fourth embodiment, the lower reinforcing member 18 extends further from the lower wall 14B to the upper wall 14T from the lower wall 14B of the fuel tank body 14, and further upwards from the upper wall 14T to the lower wall 14B. The reinforcing member 20 is extended. A first gap 28 is formed between the lateral wall 18B of the lower reinforcing member 18 and the lateral wall 20B of the upper reinforcing member 20.

このように、本発明の構造部材として、２つの下側補強部材１８、１０４を有すると共に、２つの上側補強部材２０、１０６を有する構造として、第１間隙２８及び第２間隙４０を構成してもよい。   Thus, as the structural member of the present invention, the first gap 28 and the second gap 40 are configured as the structure having the two lower reinforcing members 18 and 104 and the two upper reinforcing members 20 and 106. Also good.

なお、第４実施形態の変形例において、たとえば上側補強部材２０を設けず、下側補強部材１８を上方に延長し、延長された下側補強部材１８と燃料タンク本体１４の上壁１４Ｔとの間に第１間隙２８が構成される構造でもよい。これとは逆に、下側補強部材１８を設けず、上側補強部材２０を下方に延長して、延長された上側補強部材２０と燃料タンク本体１４の下壁１４Ｂとの間に第１間隙２８が構成される構造でもよい。   In the modification of the fourth embodiment, for example, the upper reinforcing member 20 is not provided, the lower reinforcing member 18 is extended upward, and the extended lower reinforcing member 18 and the upper wall 14T of the fuel tank body 14 are connected. A structure in which the first gap 28 is formed therebetween may be employed. On the contrary, the lower reinforcing member 18 is not provided, the upper reinforcing member 20 is extended downward, and the first gap 28 is provided between the extended upper reinforcing member 20 and the lower wall 14B of the fuel tank body 14. May be configured.

次に、本発明の第６実施形態について説明する。   Next, a sixth embodiment of the present invention will be described.

図１２には、第６実施形態の燃料タンク１３２が示されている。第６実施形態においても、第１実施形態と同一の要素、部材等については同一符号を付して、詳細な説明を省略する。   FIG. 12 shows a fuel tank 132 of the sixth embodiment. Also in the sixth embodiment, the same elements and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

第６実施形態では、図１２から分かるように、構造部材１３４が、たとえば、燃料タンク本体１４における車両前後方向の中央よりも前側及び後側にオフセットされた２箇所に設けられている。   In the sixth embodiment, as can be seen from FIG. 12, the structural members 134 are provided, for example, at two locations offset from the center in the vehicle front-rear direction in the fuel tank body 14 to the front side and the rear side.

図１３〜図１４Ｄにも詳細に示すように、第６実施形態の構造部材１３４は、上側筒状部材１３６及び下側筒状部材１３８を有している。上側筒状部材１３６は、燃料タンク本体１４の上壁１４Ｔに取付フランジ２４よって取り付けられている。上側筒状部材１３６は、下壁１４Ｂに向かって延出されている。   As shown in detail in FIGS. 13 to 14D, the structural member 134 of the sixth embodiment includes an upper cylindrical member 136 and a lower cylindrical member 138. The upper cylindrical member 136 is attached to the upper wall 14T of the fuel tank body 14 by the attachment flange 24. The upper cylindrical member 136 extends toward the lower wall 14B.

上側筒状部材１３６の下端１３６Ｂと燃料タンク本体１４の下壁１４Ｂの間には、第１間隙２８が構成されている。   A first gap 28 is formed between the lower end 136B of the upper cylindrical member 136 and the lower wall 14B of the fuel tank body 14.

また、下側筒状部材１３８は、燃料タンク本体１４の下壁１４Ｂに、取付フランジ２２によって取り付けられている。下側筒状部材１３８は、上壁１４Ｔに向かって延出されている。本実施形態では、下側筒状部材１３８は上側筒状部材１３６よりも大径であり、上側筒状部材１３６の外側に位置している。ただし、下側筒状部材１３８が上側筒状部材１３６よりも小径で、上側筒状部材１３６の内側に位置してもよい。そして、上側筒状部材１３６と下側筒状部材１３８には、水平方向（対向壁１４Ｍが対向する方向と直交する方向）に見て重なる重なり部１４０、１４２が構成されている。   The lower cylindrical member 138 is attached to the lower wall 14 </ b> B of the fuel tank body 14 by the attachment flange 22. The lower cylindrical member 138 extends toward the upper wall 14T. In the present embodiment, the lower cylindrical member 138 has a larger diameter than the upper cylindrical member 136 and is located outside the upper cylindrical member 136. However, the lower cylindrical member 138 may have a smaller diameter than the upper cylindrical member 136 and may be positioned inside the upper cylindrical member 136. The upper cylindrical member 136 and the lower cylindrical member 138 are formed with overlapping portions 140 and 142 that overlap in the horizontal direction (a direction orthogonal to the direction in which the opposing wall 14M opposes).

下側筒状部材１３８には、水平方向に貫通する収容孔１４４が形成されている。上側筒状部材１３６には、収容孔１４４に収容される移動片１４６が形成されている。そして、移動片１４６の上端１４６Ａと、収容孔１４４の上面１４４Ａとの間に、第２間隙４０が構成されている。   The lower cylindrical member 138 is formed with an accommodation hole 144 penetrating in the horizontal direction. The upper cylindrical member 136 is formed with a moving piece 146 that is accommodated in the accommodation hole 144. A second gap 40 is formed between the upper end 146 </ b> A of the moving piece 146 and the upper surface 144 </ b> A of the accommodation hole 144.

上側筒状部材１３６と下側筒状部材１３８には、水平方向に貫通する貫通孔１４８、１５０が形成されている。貫通孔１４８、１５０は、図１２に実線で示すように、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂにおける構造部材１３４の取付部分が接近したり離間したりしていない状態では、水平方向に見て一致している。   The upper cylindrical member 136 and the lower cylindrical member 138 are formed with through holes 148 and 150 penetrating in the horizontal direction. As shown by solid lines in FIG. 12, the through holes 148 and 150 are arranged in the horizontal direction in a state in which the mounting portions of the structural member 134 on the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are not approaching or separated from each other. Match to see.

下側筒状部材１３８よりも車両前方側及び車両後方側には、対向部材１５２が配置されている。対向部材１５２は、図１３に示すように、幅方向中央において、下側筒状部材１３８から離間する方向に屈曲した離間部１５２Ａを有している。離間部１５２Ａからは、貫通孔１４８、１５０に挿入可能な挿入ピン１５４が突設されている。   Opposing members 152 are arranged on the vehicle front side and the vehicle rear side of the lower cylindrical member 138. As shown in FIG. 13, the facing member 152 has a separation portion 152 </ b> A that is bent in a direction away from the lower cylindrical member 138 at the center in the width direction. An insertion pin 154 that can be inserted into the through holes 148 and 150 protrudes from the separation portion 152A.

下側筒状部材１３８からは、１つの対向部材１５２に対し２つずつ、合計で４つの摺動片１３８Ａが延出されている。それぞれの摺動片１３８Ａの外面１３８Ｓは、対応する対向部材１５２の側壁１５２Ｂの内面１５２Ｕに接触するか、もしくはわずかな隙間をあけて対向している。これにより、対向部材１５２は、下側筒状部材１３８に対する車幅方向への移動を抑制され、車両前後方向へは移動可能となる。   A total of four sliding pieces 138 </ b> A are extended from the lower cylindrical member 138, two for each opposing member 152. The outer surface 138S of each sliding piece 138A is in contact with the inner surface 152U of the side wall 152B of the corresponding opposing member 152, or opposed with a slight gap. Thereby, the opposing member 152 is restrained from moving in the vehicle width direction with respect to the lower cylindrical member 138, and can move in the vehicle front-rear direction.

摺動片１３８Ａの延出先端には、鉤片１３８Ｋが形成されている。鉤片１３８Ｋは、対向部材１５２の側壁１５２Ｂに形成された収容孔１５２Ｃに収容されている。これにより、下側筒状部材１３８に対して、対向部材１５２が過度に車両前後方向に離間しないようになっている。また、対向部材１５２は、下側筒状部材１３８に対し、前後方向の所定位置に保持されている。   A flange piece 138K is formed at the extending tip of the sliding piece 138A. The collar piece 138K is accommodated in the accommodation hole 152C formed in the side wall 152B of the facing member 152. Thus, the opposing member 152 is not excessively separated in the vehicle front-rear direction with respect to the lower cylindrical member 138. The opposing member 152 is held at a predetermined position in the front-rear direction with respect to the lower cylindrical member 138.

下側筒状部材１３８と対向部材１５２との間にはバネ部材１５６が配置されている。図１３に示す例では、バネ部材１５６は挿入ピン１５４に巻きかけられている。このバネ部材１５６は、対向部材１５２を下側筒状部材１３８から離間する方向に所定のバネ力を作用させている。このため、通常状態では、挿入ピン１５４は貫通孔１４８、１５０に挿入されることはない。しかし、燃料タンク本体１４内で流動した燃料によって、バネ部材１５６のバネ力に抗して対向部材１５２が下側筒状部材１３８に接近すると、図１４Ｄに示すように、挿入ピン１５４が貫通孔１４８、１５０に挿入される。挿入ピン１５４が貫通孔１４８、１５０に挿入されると、下側筒状部材１３８と上側筒状部材１３６の上下方向の相対移動が抑制される。   A spring member 156 is disposed between the lower cylindrical member 138 and the opposing member 152. In the example shown in FIG. 13, the spring member 156 is wound around the insertion pin 154. The spring member 156 applies a predetermined spring force in a direction in which the opposing member 152 is separated from the lower cylindrical member 138. For this reason, the insertion pin 154 is not inserted into the through holes 148 and 150 in the normal state. However, when the opposed member 152 approaches the lower cylindrical member 138 against the spring force of the spring member 156 by the fuel flowing in the fuel tank body 14, the insertion pin 154 is inserted into the through hole as shown in FIG. 14D. 148 and 150 are inserted. When the insertion pin 154 is inserted into the through holes 148 and 150, the relative movement in the vertical direction of the lower cylindrical member 138 and the upper cylindrical member 136 is suppressed.

このような構成とされた第６実施形態の燃料タンク１３２では、挿入ピン１５４が貫通孔１４８、１５０に挿入されていない状態で、燃料タンク本体１４のタンク内圧が負圧になったときは、第１間隙２８が徐々に狭くなり、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂが互いに接近する方向の湾曲が許容される。そして、図１４Ｂに示すように、上側筒状部材１３６の下端１３６Ｂと燃料タンク本体１４の下壁１４Ｂとの間の第１間隙２８が解消されて下端１３６Ｂと下壁１４Ｂとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲が阻止される。   In the fuel tank 132 of the sixth embodiment having such a configuration, when the tank internal pressure of the fuel tank main body 14 becomes negative with the insertion pin 154 not inserted into the through holes 148 and 150, The first gap 28 is gradually narrowed, and bending in a direction in which the upper wall 14T and the lower wall 14B of the fuel tank body 14 approach each other is allowed. 14B, when the first gap 28 between the lower end 136B of the upper cylindrical member 136 and the lower wall 14B of the fuel tank body 14 is eliminated and the lower end 136B and the lower wall 14B come into contact with each other, the fuel The upper wall 14T and the lower wall 14B of the tank body 14 are prevented from bending.

第６実施形態において、挿入ピン１５４が貫通孔１４８、１５０に挿入されていない状態で、燃料タンク本体１４のタンク内圧が正圧になったときは、第２間隙４０が徐々に狭くなり、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂが互いに離間する方向の湾曲が許容される。そして、図１４Ｃに示すように、移動片１４６の上端１４６Ａと収容孔１４４の上面１４４Ａとの間の第２間隙４０が解消されて上端１４６Ａと上面１４４Ａとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the sixth embodiment, when the tank internal pressure of the fuel tank main body 14 becomes a positive pressure with the insertion pin 154 not inserted into the through holes 148, 150, the second gap 40 gradually decreases, and the fuel The tank body 14 is allowed to bend in the direction in which the upper wall 14T and the lower wall 14B are separated from each other. As shown in FIG. 14C, when the second gap 40 between the upper end 146A of the moving piece 146 and the upper surface 144A of the accommodation hole 144 is eliminated and the upper end 146A and the upper surface 144A come into contact with each other, The bending of the wall 14T and the lower wall 14B is also prevented.

すなわち、第６実施形態の燃料タンク１３２においても、燃料タンク本体１４の負圧時には、燃料タンク本体１４の圧縮変形が許容され、この変形量は、第１間隙２８が解消される一定量に制限される。また、燃料タンク本体１４の正圧時には、燃料タンク本体１４の膨張変形が許容され、この変形量は、第２間隙４０が解消される一定量に制限される。   That is, also in the fuel tank 132 of the sixth embodiment, when the fuel tank body 14 is under negative pressure, the fuel tank body 14 is allowed to undergo compressive deformation, and the amount of deformation is limited to a certain amount that eliminates the first gap 28. Is done. Further, when the fuel tank main body 14 is at a positive pressure, expansion deformation of the fuel tank main body 14 is allowed, and the deformation amount is limited to a certain amount that eliminates the second gap 40.

さらに、第６実施形態の燃料タンク１３２では、燃料タンク本体１４内の燃料流動の力を対向部材１５２が受け、バネ部材１５６のバネ力に抗して対向部材１５２が下側筒状部材１３８に接近し、挿入ピン１５４が貫通孔１４８、１５０に挿入される。このように、挿入ピン１５４が貫通孔１４８、１５０に挿入されることで、下側筒状部材１３８と上側筒状部材１３６の上下方向の相対移動が抑制されるので、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの変形も抑制される。   Further, in the fuel tank 132 of the sixth embodiment, the opposing member 152 receives the force of the fuel flow in the fuel tank main body 14, and the opposing member 152 against the lower cylindrical member 138 against the spring force of the spring member 156. The insertion pin 154 is inserted into the through holes 148 and 150. As described above, since the insertion pin 154 is inserted into the through holes 148 and 150, the relative movement in the vertical direction of the lower cylindrical member 138 and the upper cylindrical member 136 is suppressed. The deformation of the wall 14T and the lower wall 14B is also suppressed.

たとえば、燃料タンク本体１４内の燃料が車両前方側へ移動すると、図１２に一点鎖線１４Ｒで示すように、燃料タンク本体１４の前側部分では、上壁１４Ｔと下壁１４Ｂとが離間する方向に湾曲しようとし、後側部分では、上壁１４Ｔと下壁１４Ｂとが接近する方向に湾曲しようとすることがある。第６実施形態では、この燃料流動により、挿入ピン１５４が貫通孔１４８、１５０に挿入されると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの変形を抑制できる。   For example, when the fuel in the fuel tank main body 14 moves to the front side of the vehicle, the upper wall 14T and the lower wall 14B are separated from each other at the front portion of the fuel tank main body 14 as shown by a one-dot chain line 14R in FIG. There is a case where the upper wall 14T and the lower wall 14B are about to bend in the direction in which the upper wall 14T and the lower wall 14B approach each other. In the sixth embodiment, when the insertion pin 154 is inserted into the through holes 148 and 150 by this fuel flow, deformation of the upper wall 14T and the lower wall 14B of the fuel tank body 14 can be suppressed.

なお、上記説明から分かるように、燃料タンク本体１４内の燃料流動に伴う上壁１４Ｔ及び下壁１４Ｂの想定変形量は、燃料タンク本体１４の中央（図１２の例では車両前後方向の中央）では少ない。したがって、燃料タンク本体１４内の燃料流動に伴う上壁１４Ｔ及び下壁１４Ｂの変形を抑制する観点からは、構造部材１３４の位置は、燃料タンク本体１４の中央を避けた位置（想定変形量が大きい位置）とすることが好ましい。ただし、構造部材１３４を、たとえば前壁１４Ｆや後壁１４Ｒに近づけすぎると、燃料流動時だけでなく、正圧時及び負圧時においても上壁１４Ｔ及び下壁１４Ｂの想定変形量が少なくなるので、前壁１４Ｆや後壁１４Ｒから離間した位置が好ましい。   As can be seen from the above description, the assumed deformation amount of the upper wall 14T and the lower wall 14B accompanying the fuel flow in the fuel tank body 14 is the center of the fuel tank body 14 (the center in the vehicle longitudinal direction in the example of FIG. 12). There are few. Therefore, from the viewpoint of suppressing the deformation of the upper wall 14T and the lower wall 14B accompanying the fuel flow in the fuel tank main body 14, the position of the structural member 134 is a position that avoids the center of the fuel tank main body 14 (assumed deformation amount is (Large position) is preferable. However, if the structural member 134 is too close to the front wall 14F or the rear wall 14R, for example, the assumed deformation amount of the upper wall 14T and the lower wall 14B is reduced not only during fuel flow but also during positive pressure and negative pressure. Therefore, a position separated from the front wall 14F and the rear wall 14R is preferable.

また、構造部材１３４をオフセット配置する位置は、燃料タンク本体１４における車両前後方向前側及び後側に限定されず、たとえば、幅方向右側及び左側でもよい。ただし、燃料タンク本体１４内の燃料流動の方向が、車両の前後方向の加速度に起因することが多いことを考慮すると、少なくとも、車両前後方向前側及び後側には構造部材１３４を配置することが好ましい。   Further, the position where the structural member 134 is offset is not limited to the front and rear sides of the fuel tank body 14 in the vehicle front-rear direction, and may be, for example, the right and left sides in the width direction. However, considering that the direction of fuel flow in the fuel tank main body 14 is often caused by acceleration in the front-rear direction of the vehicle, the structural member 134 can be disposed at least on the front side and the rear side in the vehicle front-rear direction. preferable.

特に上記の例では、下側筒状部材１３８の車両前方側及び車両後方側に対向部材１５２を配置している。したがって、車両後方側への燃料流動と、車両前方側への燃料流動の双方に対応して、上壁１４Ｔ及び下壁１４Ｂの変形を抑制できる。   In particular, in the above example, the opposing member 152 is disposed on the vehicle front side and the vehicle rear side of the lower cylindrical member 138. Therefore, deformation of the upper wall 14T and the lower wall 14B can be suppressed corresponding to both the fuel flow toward the vehicle rear side and the fuel flow toward the vehicle front side.

なお、第１延出部材及び第２延出部材として、上記では上側筒状部材１３６及び下側筒状部材１３８を挙げているが、第１延出部材及び第２延出部材は筒状に形成されている必要はなく、たとえば板状の部材であってもよい。上記したように筒状に形成すると、筒状の部材の全周で重なり部１４２、１４４を構成できる。そして、重なり部１４２、１４４において、周方向に異なる複数個所に貫通孔１４８、１８０を形成できる。   In addition, although the upper cylindrical member 136 and the lower cylindrical member 138 are mentioned as the 1st extending member and the 2nd extending member in the above, the 1st extending member and the 2nd extending member are cylindrical. It is not necessary to form, for example, a plate-shaped member may be sufficient. If it forms in a cylinder shape as mentioned above, the overlapping parts 142 and 144 can be comprised in the perimeter of a cylindrical member. And in the overlapping parts 142 and 144, the through-holes 148 and 180 can be formed in several different places in the circumferential direction.

しかも、筒状の部材とすることで、平板状の部材と比較して、上下方向の剛性が高くなる。   Moreover, by using a cylindrical member, the vertical rigidity is higher than that of a flat plate member.

上記では、上側筒状部材１３６と下側筒状部材１３８とに重なり部１４０、１４２が構成され、この重なり部において、第１係合部材及び第２係合部材としての貫通孔１４８、１５０が形成されている例を挙げている。ただし、重なり部がない構造であっても、たとえば、対向部材に設けた２つの被係合部のそれぞれを、上側筒状部材１３６と下側筒状部材１３８のそれぞれの係合部材に係合させることで、上側筒状部材１３６と下側筒状部材１３８の相対移動を抑制することが可能である。上記のように、貫通孔１４８、１５０に挿入ピン１５４を挿入すると、上側筒状部材１３６と下側筒状部材１３８の相対移動を抑制する際の確実性が高くなる。   In the above description, the upper cylindrical member 136 and the lower cylindrical member 138 are formed with the overlapping portions 140 and 142, and the through holes 148 and 150 as the first engaging member and the second engaging member are formed in the overlapping portion. The example which is formed is given. However, even if there is no overlapping portion, for example, each of the two engaged portions provided on the opposing member is engaged with the respective engaging members of the upper cylindrical member 136 and the lower cylindrical member 138. By doing so, the relative movement of the upper cylindrical member 136 and the lower cylindrical member 138 can be suppressed. As described above, when the insertion pin 154 is inserted into the through holes 148 and 150, the reliability in suppressing the relative movement between the upper cylindrical member 136 and the lower cylindrical member 138 is increased.

次に、本発明の第７実施形態について説明する。   Next, a seventh embodiment of the present invention will be described.

図１５〜図１６Ｃには、第７実施形態の燃料タンク１６２が部分的に拡大して示されている。第７実施形態において、第１実施形態と同一の要素、部材等については同一符号を付して、詳細な説明を省略する。第７実施形態では、構造部材の位置は、たとえば、第６実施形態の燃料タンク１３２（図１２参照）と同一の位置を採り得る。   15 to 16C, a fuel tank 162 according to the seventh embodiment is partially enlarged. In the seventh embodiment, the same elements and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In 7th Embodiment, the position of a structural member can take the same position as the fuel tank 132 (refer FIG. 12) of 6th Embodiment, for example.

第７実施形態の構造部材１６４は、上側筒状部材１６６及び下側筒状部材１６８を有している。上側筒状部材１６６は、燃料タンク本体１４の上壁１４Ｔに、取付フランジ２４によって取り付けられている。上側筒状部材１６６は下壁１４Ｂに向かって延出されており、その下端１６６Ｂと、燃料タンク本体１４の下壁１４Ｂの間には、第１間隙２８が構成されている。   The structural member 164 of the seventh embodiment includes an upper cylindrical member 166 and a lower cylindrical member 168. The upper cylindrical member 166 is attached to the upper wall 14 </ b> T of the fuel tank body 14 by the attachment flange 24. The upper cylindrical member 166 extends toward the lower wall 14B, and a first gap 28 is formed between the lower end 166B and the lower wall 14B of the fuel tank body 14.

上側筒状部材１６６の上下方向の中間位置には、傾斜部材１７０が設けられている。傾斜部材１７０は、上側筒状部材１６６の中心に向かって次第に下方へ傾斜する（換言すれば、径方向外側の全周で上方に傾斜する）傾斜面１７０Ｓを有している。傾斜面１７０Ｓの中央は、通常状態で後述する移動球体１７２が位置する凹部１７０Ｈである。   An inclined member 170 is provided at an intermediate position in the vertical direction of the upper cylindrical member 166. The inclined member 170 has an inclined surface 170S that is gradually inclined downward toward the center of the upper cylindrical member 166 (in other words, inclined upward in the entire outer circumference in the radial direction). The center of the inclined surface 170S is a recess 170H in which a moving sphere 172, which will be described later, is positioned in a normal state.

下側筒状部材１６８は、燃料タンク本体１４に下壁１４Ｂに、取付脚部１７４によって取り付けられている。下側筒状部材１６８の下部には、対向部材１７６が設けられている。対向部材１７６の下面は対向面１７６Ｆとされている。   The lower cylindrical member 168 is attached to the fuel tank main body 14 on the lower wall 14 </ b> B by attachment legs 174. An opposing member 176 is provided at the lower part of the lower cylindrical member 168. The lower surface of the facing member 176 is a facing surface 176F.

取付脚部１７４は、下側筒状部材１６８の周方向に一定の間隔をあけて複数（図１５に示す例では３つ）形成されている。これに対し、上側筒状部材１６６には、取付脚部１７４に対応する位置に切欠１７８が形成されている。そして、傾斜部材１７０の上に対向部材１７６が位置するように、切欠１７８に取付脚部１７４が嵌め合わされる（図１６Ａ参照）。ここで、対向面１７６Ｆは傾斜面１７０Ｓとの間に、第２間隙４０をあけて対向する。したがって、図１６Ａで示す断面では、傾斜面１７０Ｓと対向面１７６Ｆとは平行である。   A plurality of attachment legs 174 are formed (three in the example shown in FIG. 15) at regular intervals in the circumferential direction of the lower cylindrical member 168. On the other hand, the upper cylindrical member 166 has a notch 178 at a position corresponding to the mounting leg 174. And the attachment leg part 174 is fitted by the notch 178 so that the opposing member 176 may be located on the inclination member 170 (refer FIG. 16A). Here, the facing surface 176F faces the inclined surface 170S with a second gap 40 therebetween. Therefore, in the cross section shown in FIG. 16A, the inclined surface 170S and the opposing surface 176F are parallel.

傾斜面１７０Ｓには、移動部材としての移動球体１７２が支持される。移動球体１７２の直径は、図１６Ａにおいて第２間隙４０を傾斜面１７０Ｓの法線方向に測った間隔Ｄ３よりもわすかに小さい程度とされる。   A moving sphere 172 as a moving member is supported on the inclined surface 170S. The diameter of the moving sphere 172 is slightly smaller than the interval D3 obtained by measuring the second gap 40 in the normal direction of the inclined surface 170S in FIG. 16A.

傾斜部材１７０の中央（凹部１７０Ｈの上方）には、移動球体１７２の直径よりも大きい許容孔１８０が形成されている。移動球体１７２が凹部１７０Ｈに位置している状態では、移動球体１７２の上方には許容孔１８０が位置しているので、図１６Ｃに示すように、傾斜部材１７０と対向部材１７６との相対的な接近が許容される。   An allowable hole 180 larger than the diameter of the moving sphere 172 is formed in the center of the inclined member 170 (above the recess 170H). In a state where the moving sphere 172 is positioned in the recess 170H, the allowable hole 180 is positioned above the moving sphere 172. Therefore, as shown in FIG. 16C, the relative relationship between the inclined member 170 and the opposing member 176 is relatively small. Access is allowed.

これに対し、移動球体１７２が傾斜面１７０Ｓ上を上昇し、図１６Ａに二点鎖線１７２Ａで示すように、傾斜面１７０Ｓと対向面１７６Ｆの間（第２間隙４０）に入った状態となることがある。この状態では、傾斜部材１７０と対向部材１７６とが相対的に接近しようとしても、傾斜部材１７０と対向部材１７６との間に移動球体１７２Ａを挟んでしまうので、この接近が制限される。   On the other hand, the moving sphere 172 rises on the inclined surface 170S and enters a state between the inclined surface 170S and the opposing surface 176F (second gap 40) as indicated by a two-dot chain line 172A in FIG. 16A. There is. In this state, even if the inclined member 170 and the opposing member 176 try to approach relatively, the moving sphere 172A is sandwiched between the inclined member 170 and the opposing member 176, so this approach is limited.

このような構成とされた第７実施形態の燃料タンク１６２では、移動球体１７２が凹部１７０Ｈに位置している状態で、燃料タンク本体１４のタンク内圧が負圧になったときは、第１間隙２８が徐々に狭くなり、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂが互いに接近する方向の湾曲が許容される。そして、図１６Ｂに示すように、上側筒状部材１６６の下端１６６Ｂと燃料タンク本体１４の下壁１４Ｂとの間の第１間隙２８が解消されて下端１６６Ｂと下壁１４Ｂとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲が阻止される。   In the fuel tank 162 of the seventh embodiment configured as described above, when the tank internal pressure of the fuel tank body 14 becomes negative with the moving sphere 172 positioned in the recess 170H, the first gap 28 is gradually narrowed, and bending in a direction in which the upper wall 14T and the lower wall 14B of the fuel tank body 14 approach each other is allowed. 16B, when the first gap 28 between the lower end 166B of the upper cylindrical member 166 and the lower wall 14B of the fuel tank body 14 is eliminated and the lower end 166B and the lower wall 14B come into contact with each other, the fuel The upper wall 14T and the lower wall 14B of the tank body 14 are prevented from bending.

第７実施形態において、移動球体１７２が凹部１７０Ｈに位置している状態で、燃料タンク本体１４のタンク内圧が正圧になったときは、第２間隙４０が徐々に狭くなり、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂが互いに離間する方向の湾曲が許容される。そして、図１６Ｃに示すように、傾斜面１７０Ｓと対向面１７６Ｆとの間の第２間隙４０が解消されて傾斜面１７０Ｓと対向面１７６Ｆとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲も阻止される。   In the seventh embodiment, when the tank internal pressure of the fuel tank main body 14 becomes a positive pressure with the moving sphere 172 positioned in the recess 170H, the second gap 40 gradually decreases, and the fuel tank main body 14 Bending in the direction in which the upper wall 14T and the lower wall 14B are separated from each other is allowed. As shown in FIG. 16C, when the second gap 40 between the inclined surface 170S and the opposing surface 176F is eliminated and the inclined surface 170S and the opposing surface 176F come into contact with each other, the upper wall 14T and the lower wall 14T of the fuel tank body 14 are in contact with each other. The curvature of the wall 14B is also prevented.

すなわち、第７実施形態の燃料タンク１６２においても、燃料タンク本体１４の負圧時には、燃料タンク本体１４の圧縮変形が許容され、この変形量は、第１間隙２８が解消される一定量に制限される。また、燃料タンク本体１４の正圧時には、燃料タンク本体１４の膨張変形が許容され、この変形量は、第２間隙４０が解消される一定量に制限される。   That is, also in the fuel tank 162 of the seventh embodiment, the compression deformation of the fuel tank body 14 is allowed when the fuel tank body 14 is under negative pressure, and the deformation amount is limited to a certain amount that eliminates the first gap 28. Is done. Further, when the fuel tank main body 14 is at a positive pressure, expansion deformation of the fuel tank main body 14 is allowed, and the deformation amount is limited to a certain amount that eliminates the second gap 40.

さらに、第７実施形態の燃料タンク１６２では、燃料タンク本体１４に水平方向の加速度が作用し、移動球体１７２が傾斜面１７０Ｓ上を上昇すると、第２間隙４０に入る。このように、移動球体１７２が第２間隙４０に入ることで、下側筒状部材１６８と上側筒状部材１６６図の上下方向の離間が抑制されるので、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの離間方向の変形も抑制される。   Furthermore, in the fuel tank 162 of the seventh embodiment, when the horizontal acceleration acts on the fuel tank main body 14 and the moving sphere 172 rises on the inclined surface 170S, the second gap 40 is entered. As described above, since the moving sphere 172 enters the second gap 40, the vertical separation between the lower cylindrical member 168 and the upper cylindrical member 166 is suppressed, so that the upper wall 14T of the fuel tank main body 14 The deformation of the lower wall 14B in the separating direction is also suppressed.

第７実施形態において、傾斜面１７０Ｓは、凹部１７０Ｈから特定の方向、たとえば車両前方側及び車両後方側にのみ形成されていてもよい。上記したように、傾斜面１７０Ｓが凹部１７０Ｈから周方向の径方向外側の全周で上方に傾斜する形状では、燃料タンク１６２に作用する加速度が水平方向であれば、方向に依存することなく、移動球体１７２を第２間隙４０に移動させることができる。   In the seventh embodiment, the inclined surface 170S may be formed only in a specific direction from the recess 170H, for example, the vehicle front side and the vehicle rear side. As described above, in the shape in which the inclined surface 170S is inclined upward in the entire circumference radially outward from the recess 170H, if the acceleration acting on the fuel tank 162 is in the horizontal direction, the direction does not depend on the direction. The moving sphere 172 can be moved to the second gap 40.

移動部材としては、上記した移動球体１７２に限定されないが、移動球体１７２では、傾斜面１７０Ｓを転がりながら上昇する。すなわち、移動部材と傾斜面１７０Ｓとの摩擦が少なくなる。このため、移動部材が傾斜面１７０Ｓを上昇するための加速度の閾値を、傾斜面１７Ｓの傾斜角度によってコントロールしやすくなる。   The moving member is not limited to the moving sphere 172 described above, but the moving sphere 172 rises while rolling on the inclined surface 170S. That is, the friction between the moving member and the inclined surface 170S is reduced. For this reason, it becomes easy to control the threshold value of the acceleration for the moving member to move up the inclined surface 170S by the inclination angle of the inclined surface 17S.

次に、本発明の第８実施形態について説明する。   Next, an eighth embodiment of the present invention will be described.

図１７〜図１９には、第８実施形態の燃料タンク２０２が部分的に拡大して示されている。第８実施形態において、第１実施形態と同一の要素、部材等については同一符号を付して、詳細な説明を省略する。第８実施形態では、構造部材の位置は、たとえば、第６実施形態の燃料タンク１３２（図１２参照）と同一の位置を採り得る。   17 to 19 show the fuel tank 202 of the eighth embodiment partially enlarged. In the eighth embodiment, the same elements and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the eighth embodiment, the position of the structural member can be, for example, the same position as the fuel tank 132 (see FIG. 12) of the sixth embodiment.

第８実施形態の構造部材２０４は、上側筒状部材２０６及び下側筒状部材２０８を有している。上側筒状部材２０６は、燃料タンク本体１４の上壁１４Ｔに取付フランジ２４よって取り付けられている。上側筒状部材１３６は、下壁１４Ｂに向かって延出されている。   The structural member 204 according to the eighth embodiment includes an upper cylindrical member 206 and a lower cylindrical member 208. The upper cylindrical member 206 is attached to the upper wall 14T of the fuel tank body 14 by the attachment flange 24. The upper cylindrical member 136 extends toward the lower wall 14B.

下側筒状部材２０８は、燃料タンク本体１４の下壁１４Ｂに、取付フランジ２２によって取り付けられている。下側筒状部材２０８は、上壁１４Ｔに向かって延出されている。   The lower cylindrical member 208 is attached to the lower wall 14 </ b> B of the fuel tank body 14 by the attachment flange 22. The lower cylindrical member 208 extends toward the upper wall 14T.

本実施形態では、上側筒状部材２０６及び下側筒状部材２０８は、たとえば円筒状であってもよいし、角筒状であってもよい。   In the present embodiment, the upper cylindrical member 206 and the lower cylindrical member 208 may be, for example, cylindrical or rectangular.

下側筒状部材２０８は上側筒状部材２０６よりも大径であり、上側筒状部材２０６の外側に位置している。ただし、下側筒状部材２０８上側筒状部材２０６の内側に位置する形状でもよい。そして、上側筒状部材２０６と下側筒状部材２０８とは、水平方向（対向壁１４Ｍが対向する方向と直交する方向）に見て重なる重なり部２１０、２１２が構成されている。   The lower cylindrical member 208 has a larger diameter than the upper cylindrical member 206 and is located outside the upper cylindrical member 206. However, the shape located inside the lower cylindrical member 208 upper cylindrical member 206 may be sufficient. Then, the upper cylindrical member 206 and the lower cylindrical member 208 constitute overlapping portions 210 and 212 that overlap each other when viewed in the horizontal direction (a direction orthogonal to the direction in which the opposing wall 14M opposes).

上側筒状部材２０６の重なり部２１０には、対向壁１４Ｍの対向方向（上下方向）が長手方向とされた移動孔２１４が形成されている。移動孔２１４の下部からは、車両前方側に向かって上方に傾斜する傾斜孔２１６が連続している。傾斜孔２１６の下面は傾斜面２１６Ｓである。   In the overlapping portion 210 of the upper cylindrical member 206, a moving hole 214 is formed in which the facing direction (vertical direction) of the facing wall 14M is the longitudinal direction. An inclined hole 216 that is inclined upward toward the vehicle front side is continuous from the lower portion of the moving hole 214. The lower surface of the inclined hole 216 is an inclined surface 216S.

これに対し、下側筒状部材２０８の重なり部２１２には、対向壁１４Ｍの対向方向が長手方向とされた移動孔２１８が形成されている。移動孔２１８の下部からは、車両前方側に向かって上方に傾斜する対向孔２２０が連続している。対向孔２２０の上面は対向面２２０Ｆである。   On the other hand, the overlapping portion 212 of the lower cylindrical member 208 is formed with a moving hole 218 in which the facing direction of the facing wall 14M is the longitudinal direction. From the lower part of the movement hole 218, the counter hole 220 which inclines upward toward the vehicle front side is continuing. The upper surface of the facing hole 220 is a facing surface 220F.

燃料タンク本体１４が変形していない状態で、図１７及び図１９から分かるように、移動孔２１４と移動孔２１８とは車幅方向に見て略一致した位置及び形状であり、傾斜孔２１６と対向孔２２０とは略一致した位置及び形状である。   As can be seen from FIGS. 17 and 19 in a state where the fuel tank main body 14 is not deformed, the moving hole 214 and the moving hole 218 have substantially the same position and shape as viewed in the vehicle width direction. The opposed hole 220 has a position and shape that are substantially the same.

移動孔２１４と移動孔２１８には、移動部材としての移動ピン２２２が挿入されている。移動ピン２２２の直径は、移動孔２１４、２１８、傾斜孔２１６及び対向孔２２０の孔幅Ｗ１よりもわすかに狭い程度とされる。移動ピン２２２の軸方向端部には、孔幅Ｗ１よりも広い拡径部２２２Ｗが形成され、移動孔２１４、２１８、傾斜孔２１６及び対向孔２２０から抜け止めされている。   A moving pin 222 as a moving member is inserted into the moving hole 214 and the moving hole 218. The diameter of the moving pin 222 is slightly narrower than the hole width W1 of the moving holes 214 and 218, the inclined hole 216 and the counter hole 220. An enlarged diameter portion 222W wider than the hole width W1 is formed at the end in the axial direction of the moving pin 222, and is prevented from coming off from the moving holes 214 and 218, the inclined hole 216 and the counter hole 220.

移動ピン２２２は、傾斜面２１６Ｓの下部に位置している。移動ピン２２２と移動孔２１４の上面２１４Ａとの間には第１間隙２８が構成されている。移動ピン２２２と移動孔２１８の上面２１８Ａとの間には第２間隙４０が構成されている。   The moving pin 222 is located below the inclined surface 216S. A first gap 28 is formed between the moving pin 222 and the upper surface 214 </ b> A of the moving hole 214. A second gap 40 is formed between the moving pin 222 and the upper surface 218 </ b> A of the moving hole 218.

このような構成とされた第８実施形態の燃料タンク２０２では、移動ピン２２２が移動孔２１４、２１８の下部に位置している状態で、燃料タンク本体１４のタンク内圧が負圧になったときは、第１間隙２８が徐々に狭くなり、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂが互いに接近する方向の湾曲が許容される。そして、移動ピン２２２が移動孔２１４の上面２１４Ａとの間の第１間隙２８が解消されて移動ピン２２２と上面２１４Ａとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲が阻止される。   In the fuel tank 202 of the eighth embodiment configured as described above, when the tank internal pressure of the fuel tank main body 14 becomes negative with the movement pin 222 positioned below the movement holes 214 and 218. The first gap 28 is gradually narrowed, and bending in the direction in which the upper wall 14T and the lower wall 14B of the fuel tank body 14 approach each other is allowed. When the first gap 28 between the moving pin 222 and the upper surface 214A of the moving hole 214 is eliminated and the moving pin 222 and the upper surface 214A come into contact with each other, the upper wall 14T and the lower wall 14B of the fuel tank body 14 are curved. Be blocked.

第８実施形態の燃料タンク２０２において、移動ピン２２２が移動孔２１４、２１８の下部に位置している状態で、燃料タンク本体１４のタンク内圧が正圧になったときは、第２間隙４０が徐々に狭くなり、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂが互いに離間する方向の湾曲が許容される。そして、移動ピン２２２が移動孔２１８の上面２１８Ａとの間の第２間隙４０が解消されて移動ピン２２２と上面２１８Ａとが接触すると、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの湾曲が阻止される。   In the fuel tank 202 of the eighth embodiment, when the tank internal pressure of the fuel tank main body 14 becomes positive with the moving pin 222 positioned below the moving holes 214 and 218, the second gap 40 is formed. The curve gradually narrows, and the curve in the direction in which the upper wall 14T and the lower wall 14B of the fuel tank body 14 are separated from each other is allowed. When the second gap 40 between the moving pin 222 and the upper surface 218A of the moving hole 218 is eliminated and the moving pin 222 comes into contact with the upper surface 218A, the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are bent. Be blocked.

すなわち、第８実施形態の燃料タンク２０２においても、燃料タンク本体１４の負圧時には、燃料タンク本体１４の圧縮変形が許容され、この変形量は、第１間隙２８が解消される一定量に制限される。また、燃料タンク本体１４の正圧時には、燃料タンク本体１４の膨張変形が許容され、この変形量は、第２間隙４０が解消される一定量に制限される。   That is, also in the fuel tank 202 of the eighth embodiment, when the fuel tank main body 14 is under negative pressure, the fuel tank main body 14 is allowed to be compressed and deformed, and the amount of deformation is limited to a certain amount that eliminates the first gap 28. Is done. Further, when the fuel tank main body 14 is at a positive pressure, expansion deformation of the fuel tank main body 14 is allowed, and the deformation amount is limited to a certain amount that eliminates the second gap 40.

さらに、第８実施形態の燃料タンク２０２では、燃料タンク本体１４に車両前方への加速度が作用し、移動ピン２２２が傾斜面２１６Ｓ上を上昇すると、移動ピン２２２は傾斜孔２１６と対向孔２２０とで、実質的に上下に挟まれる。このように、これにより、下側筒状部材２０８と上側筒状部材２０６の上下方向の相対移動が抑制されるので、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの離間方向の変形も抑制される。   Further, in the fuel tank 202 of the eighth embodiment, when the forward acceleration of the vehicle acts on the fuel tank main body 14 and the moving pin 222 rises on the inclined surface 216S, the moving pin 222 is connected to the inclined hole 216 and the opposed hole 220. Thus, it is sandwiched substantially up and down. Thus, since the relative movement of the lower cylindrical member 208 and the upper cylindrical member 206 in the vertical direction is suppressed, the deformation of the upper wall 14T and the lower wall 14B of the fuel tank body 14 in the separation direction is also suppressed. Is done.

図２０には、本発明の第８実施形態の変形例の燃料タンク２３２が部分的に拡大して示されている。第８実施形態の変形例において、第８実施形態と同一の構成要素、部材等については同一符号を付して、詳細な説明を省略する。   FIG. 20 shows a partially enlarged fuel tank 232 according to a modification of the eighth embodiment of the present invention. In the modification of the eighth embodiment, the same components and members as those of the eighth embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

第８実施形態の変形例では、移動孔２１４の下部から、車両後方側に向かって上方に傾斜する傾斜孔２３４が連続している。傾斜孔２３４の下面は傾斜面２３４Ｓである。   In the modification of the eighth embodiment, an inclined hole 234 that is inclined upward from the lower portion of the moving hole 214 toward the vehicle rear side is continuous. The lower surface of the inclined hole 234 is an inclined surface 234S.

また、移動孔２１８の下部から、車両後方側に向かって上昇する対向孔２３６が連続している。対向孔２３６の上面は対向面２３６Ｆである。   Further, an opposing hole 236 that rises from the lower part of the moving hole 218 toward the vehicle rear side is continuous. The upper surface of the opposing hole 236 is an opposing surface 236F.

傾斜孔２３４と対向孔２３６とは、燃料タンク本体１４が変形していない状態で、車幅方向に見て略一致した位置及び形状である。   The inclined hole 234 and the opposed hole 236 have substantially the same position and shape as viewed in the vehicle width direction when the fuel tank body 14 is not deformed.

したがって、第８実施形態の変形例では、第８実施形態の作用効果に加えて、車両後方側への加速度が作用し、移動ピン２２２が傾斜孔２３４の傾斜面２３４Ｓを上昇した場合でも、下側筒状部材２０８と上側筒状部材２０６の上下方向の相対移動が抑制され、燃料タンク本体１４の上壁１４Ｔと下壁１４Ｂの離間方向の変形も抑制される。   Therefore, in the modified example of the eighth embodiment, in addition to the function and effect of the eighth embodiment, even when acceleration toward the vehicle rear side acts and the moving pin 222 moves up the inclined surface 234S of the inclined hole 234, The relative movement in the vertical direction of the side cylindrical member 208 and the upper cylindrical member 206 is suppressed, and the deformation in the separating direction of the upper wall 14T and the lower wall 14B of the fuel tank body 14 is also suppressed.

なお、第８実施形態及びその変形例において、移動部材として、移動ピン２２２に代えて、第７実施形態の移動球体１７２を用いることも可能である。移動球体１７２を用いた構造では、移動球体１７２が移動孔２１４、２１８、傾斜孔２１６、２３４及び対向孔２２０、２３６から落下しないための部材、たとえばガイド壁を設ければよい。   In the eighth embodiment and its modifications, the moving sphere 172 of the seventh embodiment can be used as the moving member in place of the moving pin 222. In the structure using the moving sphere 172, a member for preventing the moving sphere 172 from falling from the moving holes 214 and 218, the inclined holes 216 and 234, and the counter holes 220 and 236, for example, a guide wall may be provided.

上記各実施形態では、本発明の「第１延出部材」及び「第２延出部材」が、「下側補強部材１８」及び「上側補強部材」のいずれかにそれぞれ対応している例を挙げているが、これらの延出部材は、燃料タンク本体１４を補強する部材である必要はない。   In each of the above embodiments, the “first extending member” and the “second extending member” of the present invention correspond to either the “lower reinforcing member 18” or the “upper reinforcing member”, respectively. Although listed, these extending members need not be members that reinforce the fuel tank body 14.

上記第１〜第６実施形態では、燃料タンク本体１４の上壁１４Ｔ及び下壁１４Ｂが水平になるように設置された例を挙げたが、上壁１４Ｔ及び下壁１４Ｂが垂直に（あるいは斜めに）なるように設置されていてもよい。   In the first to sixth embodiments, the example in which the upper wall 14T and the lower wall 14B of the fuel tank main body 14 are installed so as to be horizontal has been described. However, the upper wall 14T and the lower wall 14B are vertically (or obliquely). It may be installed so that.

１２ 燃料タンク
１４ 燃料タンク本体
１６ 構造部材
１８ 下側補強部材
２０ 上側補強部材
２８ 第１間隙
３０ 対向部材
３４ 対向板
３６ 嵌合孔
３８ 挿入スリット
３８Ｋ 挿入開口
４０ 第２間隙
５２ 燃料タンク
５４ 対向部材
６２、６４ 嵌合孔
６６、６８ 挿入スリット
６６Ｋ、６８Ｋ 挿入開口
７２ 燃料タンク
７４ 下側補強部材
７６ 上側補強部材
８０ 固定孔
８２ 挿入孔
８４ 挿入部材
１０２ 燃料タンク
１０４ 下側補強部材
１０６ 上側補強部材
１１２ 燃料タンク
１１４ 下側補強部材
１１６ 上側補強部材
１２０ 収容孔
１２２ 収容爪
１３２ 燃料タンク
１３４ 構造部材
１３６ 上側筒状部材
１３８ 下側筒状部材
１４０ 重なり部
１４２ 重なり部
１４８、１５０ 貫通孔（第１係合部、第２係合部）
１５２ 対向部材
１５４ 挿入ピン（挿入部材、被係合部材）
１５６ バネ部材
１６２ 燃料タンク
１６４ 構造部材
１６６ 上側筒状部材（上延出部材）
１６８ 下側筒状部材（下延出部材）
１７０Ｓ 傾斜面
１７２ 移動球体（移動部材）
１７６Ｆ 対向面
２０２ 燃料タンク
２０４ 構造部材
２０６ 上側筒状部材
２０８ 下側筒状部材
２１０ 重なり部
２１２ 重なり部
２１４ 移動孔
２１６Ｓ 傾斜面
２１８ 移動孔
２２０Ｆ 対向面
２２２ 移動ピン（移動部材）
２３２ 燃料タンク
２３４Ｓ 傾斜面
２３６Ｆ 対向面 12 Fuel tank 14 Fuel tank body 16 Structural member 18 Lower reinforcing member 20 Upper reinforcing member 28 First gap 30 Opposing member 34 Opposing plate 36 Fitting hole 38 Inserting slit 38K Inserting opening 40 Second gap 52 Fuel tank 54 Opposing member 62 , 64 Fitting holes 66, 68 Insert slits 66K, 68K Insert opening 72 Fuel tank 74 Lower reinforcing member 76 Upper reinforcing member 80 Fixed hole 82 Inserting hole 84 Inserting member 102 Fuel tank 104 Lower reinforcing member 106 Upper reinforcing member 112 Fuel Tank 114 Lower reinforcement member 116 Upper reinforcement member 120 Accommodation hole 122 Accommodation claw 132 Fuel tank 134 Structural member 136 Upper tubular member 138 Lower tubular member 140 Overlap portion 142 Overlap portion 148, 150 Through hole (first engagement portion) , Second engaging portion)
152 Opposing member 154 Insertion pin (insertion member, engaged member)
156 Spring member 162 Fuel tank 164 Structural member 166 Upper cylindrical member (upward extending member)
168 Lower cylindrical member (lower extension member)
170S inclined surface 172 moving sphere (moving member)
176F opposing surface 202 fuel tank 204 structural member 206 upper cylindrical member 208 lower cylindrical member 210 overlapping portion 212 overlapping portion 214 moving hole 216S inclined surface 218 moving hole 220F opposing surface 222 moving pin (moving member)
232 Fuel tank 234S Inclined surface 236F Opposing surface

Claims (21)

燃料を収容する燃料タンク本体と、
前記燃料タンク本体の対向する２つの対向壁の間に設けられ、前記対向壁の接近により第１間隙を解消して接触する第１接触部材と、前記対向壁の離間により第２間隙を解消して接触する第２接触部材と、備えた構造部材と、
を有する燃料タンク。 A fuel tank body for containing fuel;
A first contact member that is provided between two opposing walls of the fuel tank body and that contacts the first wall by releasing the first gap when the opposing wall approaches, and the second gap is eliminated by separating the opposing wall. A second contact member in contact with each other, and a structural member provided,
Having fuel tank. 前記構造部材が、
前記対向壁の一方から他方に延出された第１延出部材と、
前記対向壁の他方から一方に延出された第２延出部材と、
を有する請求項１に記載の燃料タンク。 The structural member is
A first extending member extending from one of the opposing walls to the other;
A second extending member extending from one of the opposing walls to the other;
The fuel tank according to claim 1. 前記第１接触部材が、
前記第１延出部材に設けられた第１接触部と、
前記第１延出部材と対向する前記対向壁又は前記第２延出部材に設けられ前記第１接触部との間に前記第１間隙を構成する第１被接触部と、
を有する請求項２に記載の燃料タンク。 The first contact member is
A first contact portion provided on the first extending member;
A first contacted portion that is provided on the opposing wall facing the first extending member or the second extending member and that forms the first gap between the first contacting portion;
The fuel tank according to claim 2. 前記第２接触部材が、
前記第１延出部材に設けられた第２接触部と、
前記第１延出部材と対向する前記対向壁又は前記第２延出部材に設けられ前記第２接触部との間に前記第２間隙を構成する第２被接触部と、
を有する請求項２又は請求項３に記載の燃料タンク。 The second contact member is
A second contact portion provided on the first extending member;
A second contacted portion that is provided on the opposing wall or the second extending member facing the first extending member and forms the second gap between the second contacting portion;
The fuel tank according to claim 2 or claim 3, comprising: 前記第２被接触部が、前記第１延出部材と対向する前記対向壁又は前記第２延出部材に設けられ前記第２接触部と対向する対向部材に設けられている請求項４に記載の燃料タンク。   The said 2nd to-be-contacted part is provided in the opposing member which is provided in the said opposing wall facing the said 1st extending member or the said 2nd extending member, and opposes the said 2nd contacting part. Fuel tank. 前記対向部材が、前記第１延出部材と対向する前記対向壁又は前記第２延出部材に固定されている請求項５に記載の燃料タンク。   The fuel tank according to claim 5, wherein the facing member is fixed to the facing wall or the second extending member facing the first extending member. 前記対向部材が、前記第１延出部材及び前記第２延出部材に嵌合されている請求項５に記載の燃料タンク。   The fuel tank according to claim 5, wherein the facing member is fitted to the first extending member and the second extending member. 前記第１延出部材に形成され前記対向部材が嵌合される第１嵌合孔と、
前記第２延出部材に形成され前記対向部材が嵌合される第２嵌合孔と、
前記第１延出部材に形成され前記第１嵌合孔と連通して前記第１延出部材の外部に開口する第１スリットと、
前記第２延出部材に形成され前記第２嵌合孔と連通して第１スリットと同方向で前記第２延出部材の外部に開口される第２スリットと、
を有する請求項７に記載の燃料タンク。 A first fitting hole formed in the first extending member and into which the opposing member is fitted;
A second fitting hole formed in the second extending member and fitted with the opposing member;
A first slit formed in the first extending member and communicating with the first fitting hole and opening to the outside of the first extending member;
A second slit formed in the second extending member and communicating with the second fitting hole and opened to the outside of the second extending member in the same direction as the first slit;
The fuel tank according to claim 7. 前記第１延出部材及び前記第２延出部材のいずれか一方に設けられた挿入部材と、
前記第１延出部材及び前記第２延出部材の他方に設けられ前記挿入部材が挿入されると共に、挿入部材との間に前記第１間隙及び前記第２間隙を構成する挿入孔と、
を有する請求項２又は請求項３に記載の燃料タンク。 An insertion member provided on one of the first extension member and the second extension member;
An insertion hole which is provided on the other of the first extension member and the second extension member and the insertion member is inserted, and which forms the first gap and the second gap between the insertion member,
The fuel tank according to claim 2 or claim 3, comprising: 前記第１延出部材及び前記第２延出部材のいずれか一方に形成され前記挿入部材が挿入されて固定される固定孔を有する請求項９に記載の燃料タンク。   The fuel tank according to claim 9, further comprising a fixing hole that is formed in one of the first extending member and the second extending member and into which the insertion member is inserted and fixed. 前記第１延出部材に形成された第１係合部と、
前記第２延出部材に形成された第２係合部と、
前記燃料タンク本体内の燃料移動で前記第１係合部と前記第２係合部とに係合される被係合部材と、
を有する請求項２に記載の燃料タンク。 A first engaging portion formed on the first extending member;
A second engaging portion formed on the second extending member;
An engaged member engaged with the first engaging portion and the second engaging portion by fuel movement in the fuel tank body;
The fuel tank according to claim 2. 前記第１延出部材と前記第２延出部材とが延出方向と直交する方向に見て互いに重なる重なり部を有し、
前記重なり部において前記第１延出部材に形成された前記第１係合部としての第１貫通孔と、
前記重なり部において前記第２延出部材に形成された前記第２係合部としての第２貫通孔と、
前記重なり部に対向し前記燃料タンク内の燃料移動で前記重なり部に接近する対向部材と、
前記対向部材に設けられ、前記第１貫通孔と前記第２貫通孔とが一致した状態で前記対向材が前記重なり部に接近すると前記第１貫通孔及び前記第２貫通孔に挿入される前記被係合部材としての挿入部材と、
を有する請求項１１に記載の燃料タンク。 The first extending member and the second extending member have an overlapping portion that overlaps each other when viewed in a direction orthogonal to the extending direction,
A first through hole as the first engaging portion formed in the first extending member in the overlapping portion;
A second through hole as the second engaging portion formed in the second extending member in the overlapping portion;
A facing member that faces the overlapping portion and approaches the overlapping portion by fuel movement in the fuel tank;
The counter member is inserted into the first through hole and the second through hole when the counter member approaches the overlapping portion in a state in which the first through hole and the second through hole coincide with each other. An insertion member as an engaged member;
The fuel tank according to claim 11, comprising: 前記第１延出部材が前記対向方向に延在する筒状の第１筒状部材であり、
前記第２延出部材が前記第１筒状部材の外側または内側に位置する第２筒状部材である請求項１２に記載の燃料タンク。 The first extending member is a cylindrical first tubular member extending in the facing direction;
The fuel tank according to claim 12, wherein the second extending member is a second cylindrical member located outside or inside the first cylindrical member. 前記貫通孔が、前記第１筒状部材及び前記第２筒状部材の周方向に複数形成され、
前記挿入部材を備えた前記対向部材が、前記第１筒状部材及び前記第２筒状部材の周囲で周方向に複数設けられる請求項１３に記載の燃料タンク。 A plurality of the through holes are formed in the circumferential direction of the first cylindrical member and the second cylindrical member,
The fuel tank according to claim 13, wherein a plurality of the opposing members each having the insertion member are provided in the circumferential direction around the first cylindrical member and the second cylindrical member. 前記対向部材を前記重なり部から離間する方向に付勢し、所定以下の前記燃料流動では前記挿入部材が前記貫通孔に非挿入である状態を維持するバネ部材を有する請求項１２〜請求項１４のいずれか１項に記載の燃料タンク。   15. A spring member that urges the opposing member in a direction away from the overlapping portion and maintains a state in which the insertion member is not inserted into the through hole when the fuel flow is less than or equal to a predetermined value. The fuel tank according to any one of the above. 前記第１延出部材に設けられ水平方向に対し傾斜した傾斜面と、
前記傾斜面に支持され横方向の加速度で傾斜面を上昇する移動部材と、
前記第２延出部材に設けられ前記傾斜面を上昇した前記移動部材の上方で前記移動部材と対向する対向面と、
を有する請求項２に記載の燃料タンク。 An inclined surface provided on the first extending member and inclined with respect to the horizontal direction;
A moving member supported by the inclined surface and moving up the inclined surface with a lateral acceleration;
A facing surface facing the moving member above the moving member provided on the second extending member and rising the inclined surface;
The fuel tank according to claim 2. 前記第１延出部材が前記燃料タンク本体の上壁から下壁に延出された上延出部材であり、
前記第２延出部材が前記燃料タンク本体の下壁から上壁に延出された下延出部材であり、
前記傾斜面が前記上延出部材に設けられ、
前記対向面が前記下延出部材に設けられる請求項１６に記載の燃料タンク。 The first extending member is an upper extending member extending from an upper wall of the fuel tank body to a lower wall;
The second extending member is a lower extending member extended from a lower wall of the fuel tank body to an upper wall;
The inclined surface is provided on the upper extending member;
The fuel tank according to claim 16, wherein the facing surface is provided on the lower extending member. 前記傾斜面が、相対的に低位置にある中心部から全周で外側に向かって上方に傾斜する請求項１６又は請求項１７に記載の燃料タンク。   18. The fuel tank according to claim 16, wherein the inclined surface is inclined upward and outward from the central portion at a relatively low position on the entire circumference. 前記移動部材が球体である請求項１６〜請求項１８のいずれか１項に記載の燃料タンク。   The fuel tank according to any one of claims 16 to 18, wherein the moving member is a sphere. 前記傾斜面と前記対向面との隙間が前記第２間隙を構成している請求項１６〜請求項１９のいずれか１項に記載の燃料タンク。   The fuel tank according to any one of claims 16 to 19, wherein a gap between the inclined surface and the facing surface constitutes the second gap. 前記下延出部材と前記上延出部材とが水平方向に見て互いに重なる重なり部を有し、
前記重なり部において前記上延出部材を貫通し前記傾斜面を構成して前記移動部材を支持する傾斜孔と、
前記重なり部において前記下延出部材を貫通し前記対向面を構成して前記移動部材が挿通される対向孔と、
前記傾斜孔及び前記対向孔の少なくとも一方から連続し、前記上延出部材と前記下延出部材との相対的な上下動時に前記移動部材が移動する移動孔と、
を有する請求項１７に記載の燃料タンク。 The lower extending member and the upper extending member have overlapping portions that overlap each other when viewed in the horizontal direction,
An inclined hole that penetrates the upper extending member in the overlapping portion and constitutes the inclined surface to support the moving member;
A counter hole through which the moving member is inserted by forming the counter surface through the lower extension member in the overlapping portion;
A moving hole that is continuous from at least one of the inclined hole and the counter hole, and the moving member moves when the upper extending member and the lower extending member move up and down relatively;
The fuel tank according to claim 17, comprising:
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FR3078026A1 (en) * 2018-02-20 2019-08-23 Psa Automobiles Sa REINFORCEMENT DIPOSITIVE FOR FUEL TANK
WO2019162581A1 (en) * 2018-02-20 2019-08-29 Psa Automobiles Sa Reinforcement device for a fuel tank

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