JP2008105441A - Structure for attaching valve member to fuel tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for attaching a valve member to a fuel tank enables the attachment of the valve member to the fuel tank with a simple structure by preventing the permeation of the fuel. <P>SOLUTION: Opposed pieces 34E to be opposed to the outer surface of a sheet material 18 with a required clearance are formed on the cover member 32 of a float valve 28. A connecting member 38 is connected and fixed to the cover member 32 from below. The flange portion 38C of the connecting member 38 is brought into contact with the projected portions 30 of a fuel tank construction 16 from the lower end side of the projected portion 30. Thus, weld portions 36A and the projected portions 30 are sandwiched between the opposed pieces 34E and the flange portion 38C. By this configuration, a sufficient attaching strength can be achieved even if the thickness of the weld portions 36A is thin. Therefore, a fuel permeating cross sectional area becomes small. As a result, a member for preventing the permeation of the fuel becomes unnecessary, and a simple structure can be achieved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、燃料タンクへの弁部材取付構造に関する。   The present invention relates to a structure for attaching a valve member to a fuel tank.

燃料タンクに燃料遮断弁等の弁部材を取り付ける構造として、特許文献１には、コネクタの内部フランジ構成体及び外部フランジ構成体の外周部を燃料タンクの外面部に加熱溶融した構造が記載されている。また、特許文献２にも、フランジ部の下端に形成された環状融着端を燃料タンクのタンク上壁に溶着した構造が記載されている。   As a structure for attaching a valve member such as a fuel shut-off valve to a fuel tank, Patent Document 1 describes a structure in which the outer peripheral part of the inner flange structure and the outer flange structure of the connector are heated and melted to the outer surface part of the fuel tank. Yes. Patent Document 2 also describes a structure in which an annular fusion end formed at the lower end of the flange portion is welded to the tank upper wall of the fuel tank.

しかし、このように、弁部材の一部を燃料タンクに単に溶着するだけでは、高い取り付け強度を得ることが難しい。ここで、取り付け強度（溶着強度）を高めるためには、たとえば、溶着部分を構成する樹脂の厚みを厚くすることが考えられる。しかし、樹脂を厚くすると、燃料タンクからの燃料の透過断面積が大きくなるため、透過防止のための新たな部材（たとえばシール部材）等が必要になり、構造の複雑化を招く。
特開２００３−２７６４５７号公報 特開２００１−２７１９５３号公報 However, it is difficult to obtain high attachment strength simply by welding a part of the valve member to the fuel tank. Here, in order to increase the attachment strength (welding strength), for example, it is conceivable to increase the thickness of the resin constituting the welded portion. However, if the resin is thickened, the permeation cross-sectional area of the fuel from the fuel tank is increased, so that a new member (for example, a seal member) for preventing permeation is required, resulting in a complicated structure.
JP 2003-276457 A Japanese Patent Application Laid-Open No. 2001-271953

本発明は上記事実を考慮し、簡単な構造で、燃料の透過を防止して弁部材を燃料タンクに強固に取り付けできる燃料タンクへの弁部材取付構造を得ることを課題とする。   In view of the above facts, an object of the present invention is to obtain a valve member attachment structure to a fuel tank that can prevent the permeation of fuel and attach the valve member firmly to the fuel tank with a simple structure.

請求項１に記載の発明では、燃料タンクの外面に対向する外面対向部を備えた弁部材本体と、前記弁部材本体に固定され、前記外面対向部とで燃料タンクを部分的に挟み込む位置で前記燃料タンクの内面に接触する内面接触部を備えた固定部材と、前記外面対向部と前記燃料タンクの外面との間に配置され、燃料タンクの外層を構成する外層部材と溶着される溶着部材と、を有することを特徴とする。   In the first aspect of the present invention, the valve member main body having an outer surface facing portion that faces the outer surface of the fuel tank, and a position that is fixed to the valve member main body and that partially sandwiches the fuel tank between the outer surface facing portion. A fixing member having an inner surface contact portion that contacts the inner surface of the fuel tank, and a welding member that is disposed between the outer surface facing portion and the outer surface of the fuel tank and is welded to an outer layer member that constitutes an outer layer of the fuel tank. It is characterized by having.

この燃料タンクへの弁部材取付構造では、弁部材本体の外面対向部が燃料タンクの外面に対向し、固定部材の内面接触部が燃料タンクの内面に接触した状態で、燃料タンクの外層部材に溶着部材が溶着されて、弁部材が燃料タンクに取り付けられる。外面対向部と打つ面接触部とで、燃料タンクの外層部材と溶着部材とを挟み込むようにして、弁部材が燃料タンクに取り付けられるので、単に溶着部材を燃料タンクの外層部材に溶着した構成と比較して、取り付け強度が高くなる。また、溶着強度を高めるために、溶着部材や、燃料タンクの外層部材を厚くする必要がないので、燃料の透過断面積も大きくならない。燃料の透過防止のための新たな部材（シール部材）等も不要となるので、簡単な構造となる。   In this valve member mounting structure to the fuel tank, the outer surface facing portion of the valve member body faces the outer surface of the fuel tank, and the inner surface contact portion of the fixing member contacts the inner surface of the fuel tank. The welding member is welded, and the valve member is attached to the fuel tank. Since the valve member is attached to the fuel tank so that the outer layer member and the welding member of the fuel tank are sandwiched between the outer surface facing portion and the hitting surface contact portion, the welding member is simply welded to the outer layer member of the fuel tank. In comparison, the mounting strength is increased. Further, since it is not necessary to increase the thickness of the welding member or the outer layer member of the fuel tank in order to increase the welding strength, the fuel permeation cross-sectional area does not increase. Since a new member (seal member) or the like for preventing the permeation of fuel is not required, the structure is simple.

請求項２に記載の発明では、請求項１に記載の発明において、前記燃料タンク内の燃料液位の上昇によって上昇するフロートと、前記弁部材本体に開口され上昇した前記フロートでシールされるシール部と、前記弁部材本体に形成され前記シール部を通過した蒸発燃料ガスを外部に排出する排出部と、を有することを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, a float that rises as the fuel liquid level in the fuel tank rises, and a seal that is sealed by the float that is opened and raised in the valve member body. And a discharge part that discharges the evaporated fuel gas formed in the valve member main body and having passed through the seal part to the outside.

したがって、フロートの上昇によってシール部をシールすることができるが、シールされていないときには、燃料タンク内の蒸発燃料ガスがシール部を通過し、さらに排出部から外部（たとえば配管）等に排出される。   Therefore, the seal portion can be sealed by raising the float, but when the seal portion is not sealed, the evaporated fuel gas in the fuel tank passes through the seal portion and is further discharged from the discharge portion to the outside (for example, piping). .

シール部及び排出部は、いずれも弁部材本体に形成されているので、シール部と排出部の間に、部材の境界が存在しない（たとえば、シール部を固定部材に形成すると、シール部と排出部の間に、固定部材と弁部材本体の境界が存在してしまう）。このため、この境界をシールするためのシール部材も不要となり、簡単な構造となる。   Since both the seal part and the discharge part are formed in the valve member body, there is no member boundary between the seal part and the discharge part (for example, if the seal part is formed on the fixed member, the seal part and the discharge part are discharged). The boundary between the fixing member and the valve member main body exists between the portions). For this reason, a sealing member for sealing this boundary is not necessary, and the structure is simple.

請求項３に記載の発明では、請求項１又は請求項２に記載の発明において、前記固定部材を前記弁部材本体に嵌合させる嵌合手段、を有することを特徴とする。   According to a third aspect of the present invention, in the first or second aspect of the present invention, the fixing member includes fitting means for fitting the fixing member to the valve member main body.

これにより、固定部材と弁部材本体とを嵌合させて、これらを強固に固定できるので、弁部材の燃料タンクへの取り付け強度も高くすることが可能になる。   As a result, the fixing member and the valve member main body can be fitted and firmly fixed, so that the strength of attaching the valve member to the fuel tank can be increased.

本発明は上記構成としたので、簡単な構造で、燃料の透過を防止して弁部材を燃料タンクに強固に取り付けできる。   Since the present invention has the above-described configuration, the valve member can be firmly attached to the fuel tank with a simple structure while preventing the permeation of fuel.

図１には、本発明の一実施形態の燃料タンクへの弁部材取付構造（以下、単に「弁部材取付構造」という）１２が示されている。この弁部材取付構造は、燃料タンク１４に、弁部材であるフロートバルブ２８を取り付けるために適用される。   FIG. 1 shows a valve member mounting structure (hereinafter simply referred to as “valve member mounting structure”) 12 to a fuel tank according to an embodiment of the present invention. This valve member mounting structure is applied to mount a float valve 28 as a valve member on the fuel tank 14.

燃料タンク１４（全体像は図示省略）は、燃料タンク構成体１６によって箱状に形成されており、その外側には、図２に詳細に示すように、燃料タンク１４の外層を構成するシート材１８を有している。シート材１８は、厚み方向中央において燃料の透過を防止する透過防止層２０と、この透過防止層２０の両側の樹脂層２２と、で構成されている。そして、シート材１８の内側に燃料タンク構成体１６が射出成型されて、燃料タンク１４のタンクシェル２４が構成されている。   The fuel tank 14 (the whole image is not shown) is formed in a box shape by a fuel tank structural body 16, and on the outer side thereof, as shown in detail in FIG. 2, a sheet material constituting the outer layer of the fuel tank 14. 18. The sheet material 18 includes a permeation prevention layer 20 that prevents permeation of fuel at the center in the thickness direction, and resin layers 22 on both sides of the permeation prevention layer 20. And the fuel tank structure 16 is injection-molded inside the sheet | seat material 18, and the tank shell 24 of the fuel tank 14 is comprised.

シート材１８及び燃料タンク構成体１６には、フロートバルブ２８を取り付ける部分に取付孔２６が形成されている。燃料タンク構成体１６には、取付孔２６の周囲から燃料タンク１４の内側に向かって円筒状の突出部３０が突出されている。   A mounting hole 26 is formed in the seat material 18 and the fuel tank constituting body 16 at a portion where the float valve 28 is attached. A cylindrical protrusion 30 protrudes from the periphery of the mounting hole 26 toward the inside of the fuel tank 14 in the fuel tank structure 16.

フロートバルブ２８は、取付孔２６を塞ぐように配置されるカバー部材３２を有している。カバー部材３２は、カバー本体３４と溶着材３６とで構成されており、カバー本体３４には、取付孔２６を覆う形状のシール板３４Ａと、このシール板３４Ａから延出されて、取付孔２６内に位置する円筒部３４Ｂと、が備えられている。シール板３４Ａの中央には、後述するフロート４６で閉塞されるシール部３４Ｃが形成されている。   The float valve 28 has a cover member 32 disposed so as to close the attachment hole 26. The cover member 32 includes a cover main body 34 and a welding material 36. The cover main body 34 has a seal plate 34 A configured to cover the attachment hole 26, and extends from the seal plate 34 A to be attached to the attachment hole 26. And a cylindrical portion 34B located inside. In the center of the seal plate 34A, a seal portion 34C that is closed by a float 46 described later is formed.

また、シール板３４Ａの上方には、横方向へと延出されて、配管等が接続される接続部３４Ｄが形成されている。この接続部３４Ｄを通じて蒸発燃料ガス等が配管に排出されるようになっており、接続部３４Ｄは本発明における排出部となっている。   In addition, a connection portion 34D is formed above the seal plate 34A so as to extend in the lateral direction and to which piping and the like are connected. Vaporized fuel gas or the like is discharged to the pipe through the connection portion 34D, and the connection portion 34D is a discharge portion in the present invention.

カバー部材３２の円筒部３４Ｂの上部からは、径方向外側に向かってフランジ状に延出された対向片３４Ｅが形成されている。対向片３４Ｅは、シート材１８の外面との間に所定の間隔をあけて対向している。   From the upper part of the cylindrical portion 34B of the cover member 32, a facing piece 34E is formed extending in a flange shape toward the radially outer side. The facing piece 34E is opposed to the outer surface of the sheet material 18 with a predetermined interval.

溶着材３６は、シート材１８の樹脂層２２と溶着可能な材料で構成されており、カバー本体３４の周囲を覆っている。特に、図２に詳細に示すように、対向片３４Ｅとシート材１８の外面との間の部分は、他の部分と比較して薄肉の溶着部３６Ａとされている。そして、樹脂層２２と溶着部３６Ａとが、たとえばレーザー溶着等の簡易な溶着方法によって溶着されている。   The welding material 36 is made of a material that can be welded to the resin layer 22 of the sheet material 18, and covers the periphery of the cover main body 34. In particular, as shown in detail in FIG. 2, a portion between the facing piece 34 </ b> E and the outer surface of the sheet material 18 is a thinner welded portion 36 </ b> A than the other portions. The resin layer 22 and the welding portion 36A are welded by a simple welding method such as laser welding.

図１に示すように、カバー本体３４の円筒部３４Ｂには、下方から締結部材３８が締結されて固定されている。締結部材３８は、円筒部３４Ｂの内側に配置される円筒部３８Ｂと、この円筒部３４Ｂの底部分を閉塞する閉塞板３８Ａを有し、さらに、閉塞板３８Ａからは径方向外側へ延出されたフランジ部３８Ｃが形成されている。円筒部３４Ｂの内周面には雌ネジ４２が、円筒部３８Ｂの外周面には雄ネジ４０が形成されており、円筒部３８Ｂを円筒部３４Ｂにネジ込んで、締結部材３８をカバー本体３４に締結することができる。   As shown in FIG. 1, a fastening member 38 is fastened and fixed to the cylindrical portion 34 </ b> B of the cover main body 34 from below. The fastening member 38 includes a cylindrical portion 38B disposed inside the cylindrical portion 34B, and a closing plate 38A that closes the bottom portion of the cylindrical portion 34B, and further extends radially outward from the closing plate 38A. A flange portion 38C is formed. A female screw 42 is formed on the inner peripheral surface of the cylindrical portion 34B, and a male screw 40 is formed on the outer peripheral surface of the cylindrical portion 38B. The cylindrical portion 38B is screwed into the cylindrical portion 34B, and the fastening member 38 is attached to the cover body 34. Can be fastened.

このように締結部材３８がカバー本体３４に締結されると、フランジ部３８Ｃが燃料タンク構成体１６の突出部３０に下端側から接触する。すなわち、締結部材３８をカバー本体３４にネジ込んでいくと、対向片３４Ｅとフランジ部３８Ｃとで、溶着部３６Ａ及び突出部３０を挟み込むこととなる。   When the fastening member 38 is fastened to the cover body 34 in this way, the flange portion 38C comes into contact with the protruding portion 30 of the fuel tank constituting body 16 from the lower end side. That is, when the fastening member 38 is screwed into the cover main body 34, the welding portion 36A and the protruding portion 30 are sandwiched between the opposing piece 34E and the flange portion 38C.

円筒部３８Ｂ内には、フロート４６が収容されている。燃料タンク１４内の燃料液位が上昇すると、フロート４６も上昇する。フロート４６の上端面４６Ｔは円錐状に形成されており、フロート４６の上昇によって上端面４６Ｔがシール部３４Ｃを閉塞することで、燃料タンク１４内からの蒸発燃料ガスの排出が阻止される。   A float 46 is accommodated in the cylindrical portion 38B. When the fuel level in the fuel tank 14 rises, the float 46 also rises. The upper end surface 46T of the float 46 is formed in a conical shape, and the upper end surface 46T closes the seal portion 34C as the float 46 rises, thereby preventing the vaporized fuel gas from being discharged from the fuel tank 14.

次に、本実施形態の作用を説明する。   Next, the operation of this embodiment will be described.

図１から分かるように、本実施形態の弁部材取付構造１２では、溶着部３６Ａが樹脂層２２と溶着されることで、フロートバルブ２８が燃料タンク１４に取り付けられるが、さらに、カバー部材３２の対向片３４Ｅと締結部材３８のフランジ部３８Ｃとで、溶着部３６Ａ及び突出部３０を挟み込んでいる。この挟み込み構造によってフロートバルブ２８は燃料タンク１４に固定されるので、単に溶着部３６Ａを樹脂層２２に溶着した構造と比較して、取付強度が高くなる。換言すれば、溶着部３６Ａとしては、その厚みが薄くても十分な取付強度が得られることになる。ここで、一般に、溶着部３６Ａを構成する樹脂は、燃料透過方向と直交する方向の断面積（燃料透過断面積）が小さくなるほど、燃料透過性が低くなる物性を有している。本実施形態では、溶着部３６Ａの厚みを、上記した挟み込み構造がない構成と比較して薄くできるので、燃料透過断面積が小さくなり、燃料の透過を防止できる。また、燃料透過防止のための部材（シール部材等）を用いる必要もないので、簡単な構造となる。   As can be seen from FIG. 1, in the valve member mounting structure 12 of the present embodiment, the float valve 28 is attached to the fuel tank 14 by welding the welded portion 36 </ b> A to the resin layer 22. The welding portion 36A and the protruding portion 30 are sandwiched between the facing piece 34E and the flange portion 38C of the fastening member 38. Since the float valve 28 is fixed to the fuel tank 14 by this sandwiching structure, the mounting strength is increased as compared with a structure in which the welding portion 36A is simply welded to the resin layer 22. In other words, sufficient attachment strength can be obtained as the welded portion 36A even if its thickness is small. Here, in general, the resin constituting the welded portion 36 </ b> A has physical properties such that the lower the cross-sectional area (fuel permeation cross-sectional area) in the direction orthogonal to the fuel permeation direction, the lower the fuel permeability. In the present embodiment, since the thickness of the welded portion 36A can be made thinner than the configuration without the sandwiching structure described above, the fuel permeation cross-sectional area is reduced, and fuel permeation can be prevented. In addition, since it is not necessary to use a member for preventing fuel permeation (such as a seal member), the structure is simple.

特に本実施形態では、カバー本体３４の円筒部３４Ｂに雌ネジ４２を形成し、締結部材３８の円筒部３８Ｂに雄ネジ４０を形成することで、円筒部３８Ｂを円筒部３４Ｂにネジ込んで、締結部材３８をカバー本体３４に締結することができるようにしている。そして、このネジ込みを強くすることで、カバー部材３２の対向片３４Ｅと締結部材３８のフランジ部３８Ｃとの挟み込みの強度を高めることができ、フロートバルブ２８の燃料タンク１４への取付強度も高めることができる。これにより、溶着部３６Ａをさらに薄くすることも可能となる。   In particular, in the present embodiment, by forming the female screw 42 in the cylindrical portion 34B of the cover body 34 and forming the male screw 40 in the cylindrical portion 38B of the fastening member 38, the cylindrical portion 38B is screwed into the cylindrical portion 34B. The fastening member 38 can be fastened to the cover main body 34. Further, by strengthening this screwing, it is possible to increase the strength of pinching between the facing piece 34E of the cover member 32 and the flange portion 38C of the fastening member 38, and the mounting strength of the float valve 28 to the fuel tank 14 is also increased. be able to. As a result, the welded portion 36A can be made thinner.

フロートバルブ２８が燃料タンク１４に取り付けられた状態では、フロート４６が上昇していない場合には、シール部３４Ｃはフロート４６で閉塞されることなく開放されているので、燃料タンク１４内の蒸発燃料ガスが、シール部３４Ｃから接続部３４Ｄを経て、さらに図示しない配管等に排出される。   In a state where the float valve 28 is attached to the fuel tank 14, when the float 46 is not raised, the seal portion 34 </ b> C is opened without being blocked by the float 46, and thus the evaporated fuel in the fuel tank 14. The gas is further discharged from the seal portion 34C through the connection portion 34D to a pipe or the like (not shown).

ここで、本実施形態では、シール部３４Ｃ及び接続部３４Ｄを、いずれもカバー部材３２に設けており、蒸発燃料ガスの排出経路に、複数の部材の境界が存在していない。したがって、境界をシールするためのシール部材も不要となるので、この点でも簡単な構造となる。   Here, in the present embodiment, both the seal portion 34C and the connection portion 34D are provided in the cover member 32, and there are no boundaries between the plurality of members in the evaporated fuel gas discharge path. Accordingly, a sealing member for sealing the boundary is not necessary, and the structure is simple in this respect.

なお、上記では、本発明の嵌合手段として、カバー本体３４の円筒部３４Ｂの雌ネジ４２と、締結部材３８の円筒部３８Ｂの雄ネジ４０によるネジ込み構造を例に挙げたが、本発明に係る固定部材（上記実施形態では締結部材３８）を、弁部材本体（上記実施形態ではカバー部材３２）に嵌合させることができれば、嵌合手段はネジ込み構造に限定されない。たとえば、カバー本体３４の円筒部３４Ｂと締結部材３８の円筒部３８Ｂとに、互いに係合する係合部（及び被係合部）を設けて、円筒部３４Ｂ内に円筒部３８Ｂを差し入れる過程で係合させる構成でもよい。上記実施形態のようにネジ込み構造とすると、ネジ込みを強めることで、フロートバルブ２８の燃料タンク１４への取付強度も高めることができ、さらには、突出部３０の突出長のバラツキを吸収して取り付けできるようになるので、好ましい。   In the above, the fitting means of the present invention has been exemplified by the screwed structure by the female screw 42 of the cylindrical portion 34B of the cover main body 34 and the male screw 40 of the cylindrical portion 38B of the fastening member 38. As long as the fixing member (the fastening member 38 in the above embodiment) can be fitted to the valve member main body (the cover member 32 in the above embodiment), the fitting means is not limited to the screw-in structure. For example, a process of providing an engaging portion (and an engaged portion) to be engaged with each other in the cylindrical portion 34B of the cover main body 34 and the cylindrical portion 38B of the fastening member 38, and inserting the cylindrical portion 38B into the cylindrical portion 34B. It is also possible to use a configuration in which If the screwed structure is used as in the above embodiment, the mounting strength of the float valve 28 to the fuel tank 14 can be increased by strengthening the screwing, and further, the variation in the protruding length of the protruding portion 30 is absorbed. So that it can be attached.

本発明の一実施形態の燃料タンクへの弁部材取付構造を示す断面図である。It is sectional drawing which shows the valve member attachment structure to the fuel tank of one Embodiment of this invention. 本発明の一実施形態の燃料タンクへの弁部材取付構造を部分的に拡大して示す断面図である。It is sectional drawing which expands and shows the valve member attachment structure to the fuel tank of one Embodiment of this invention partially.

符号の説明Explanation of symbols

１２ 弁部材取付構造
１４ 燃料タンク
１６ 燃料タンク構成体
１８ シート材（外層部材）
２０ 透過防止層
２２ 樹脂層
２４ タンクシェル
２６ 取付孔
２８ フロートバルブ
３０ 突出部
３２ カバー部材
３４ カバー本体（弁部材本体）
３４Ａ シール板
３４Ｂ 円筒部
３４Ｃ シール部
３４Ｄ 接続部
３４Ｅ 対向片（外面対向部）
３６ 溶着材
３６Ａ 溶着部（溶着部材）
３８ 締結部材（固定部材）
３８Ａ 閉塞板
３８Ｂ 円筒部
３８Ｃ フランジ部（内面接触部）
４０ 雄ネジ
４２ 雌ネジ
４６ フロート
４６Ｔ 上端面 12 Valve member mounting structure 14 Fuel tank 16 Fuel tank component 18 Sheet material (outer layer member)
20 Permeation prevention layer 22 Resin layer 24 Tank shell 26 Mounting hole 28 Float valve 30 Projection part 32 Cover member 34 Cover body (valve member body)
34A Seal plate 34B Cylindrical part 34C Seal part 34D Connection part 34E Opposite piece (outer surface facing part)
36 welding material 36A welding part (welding member)
38 Fastening member (fixing member)
38A Blocking plate 38B Cylindrical part 38C Flange part (inner surface contact part)
40 Male thread 42 Female thread 46 Float 46T Upper end surface

Claims (3)

燃料タンクの外面に対向する外面対向部を備えた弁部材本体と、
前記弁部材本体に固定され、前記外面対向部とで燃料タンクを部分的に挟み込む位置で前記燃料タンクの内面に接触する内面接触部を備えた固定部材と、
前記外面対向部と前記燃料タンクの外面との間に配置され、燃料タンクの外層を構成する外層部材と溶着される溶着部材と、
を有することを特徴とする燃料タンクへの弁部材取付構造。 A valve member body having an outer surface facing portion facing the outer surface of the fuel tank;
A fixing member that is fixed to the valve member main body and includes an inner surface contact portion that comes into contact with the inner surface of the fuel tank at a position where the fuel tank is partially sandwiched between the outer surface facing portion, and
A welding member disposed between the outer surface facing portion and the outer surface of the fuel tank, and welded to an outer layer member constituting the outer layer of the fuel tank;
A structure for attaching a valve member to a fuel tank. 前記燃料タンク内の燃料液位の上昇によって上昇するフロートと、
前記弁部材本体に開口され上昇した前記フロートでシールされるシール部と、
前記弁部材本体に形成され前記シール部を通過した蒸発燃料ガスを外部に排出する排出部と、
を有することを特徴とする請求項１に記載の燃料タンクへの弁部材取付構造。 A float that rises as the fuel level in the fuel tank rises;
A seal portion that is opened in the valve member body and sealed with the float that has been lifted;
A discharge part for discharging the evaporated fuel gas formed in the valve member body and having passed through the seal part to the outside;
The valve member mounting structure for a fuel tank according to claim 1, wherein 前記固定部材を前記弁部材本体に嵌合させる嵌合手段、
を有することを特徴とする請求項１又は請求項２に記載の燃料タンクへの弁部材取付構造。 Fitting means for fitting the fixing member to the valve member body;
The structure for attaching a valve member to a fuel tank according to claim 1 or 2, characterized by comprising:

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