JP4386424B2 - Fuel supply device - Google Patents

Fuel supply device Download PDF

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Publication number
JP4386424B2
JP4386424B2 JP2004023330A JP2004023330A JP4386424B2 JP 4386424 B2 JP4386424 B2 JP 4386424B2 JP 2004023330 A JP2004023330 A JP 2004023330A JP 2004023330 A JP2004023330 A JP 2004023330A JP 4386424 B2 JP4386424 B2 JP 4386424B2
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Japan
Prior art keywords
claw
fuel
claw portions
pump
fuel tank
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JP2005214112A (en
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勝一 八木澤
勝紀 小室
正樹 上野
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2004023330A priority Critical patent/JP4386424B2/en
Priority to CNB2005100017249A priority patent/CN1313296C/en
Priority to IT000022A priority patent/ITTO20050022A1/en
Priority to ES200500137A priority patent/ES2274677B1/en
Publication of JP2005214112A publication Critical patent/JP2005214112A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/103—Mounting pumps on fuel tanks

Description

本発明は、燃料タンク内に装着される燃料ポンプを備えた燃料供給装置に関し、特に、燃料タンクに対して燃料ポンプを容易に組み付けることができるようにした燃料供給装置に関する。   The present invention relates to a fuel supply device including a fuel pump mounted in a fuel tank, and more particularly to a fuel supply device that allows a fuel pump to be easily assembled to a fuel tank.

従来の燃料供給装置において、燃料タンクの天井壁に形成された開口部の周囲に複数の植え込みボルトを外部に向けて立設させ、このボルトに燃料ポンプ用のリテーナ（保持部材）の孔を係合させてナットで締め付ける構造が採られることがある。   In a conventional fuel supply device, a plurality of stud bolts are erected outwardly around an opening formed in a ceiling wall of a fuel tank, and a hole of a retainer (holding member) for a fuel pump is associated with the bolt. A structure may be adopted in which the nuts are tightened with nuts.

また、車両に搭載された燃料タンク内に燃料ポンプを配置した燃料供給装置が知られる（例えば、特開２００３−１２０４５４号公報）。この燃料供給装置では、燃料タンクの天井壁に設けられた開口部の周縁から半径方向内方へ突出する複数のロック爪を持つ環状体が天井壁に溶接されている。一方、燃料ポンプには前記開口部を塞ぐための取り付けフランジが設けられる。さらに、前記フランジの上面に当接して該フランジを押さえる部分と前記ロック爪に係合する係合部とを有するロックリングを設ける。このロックリングを所定角度回転することによって、ロックリングの複数の係合部に複数のロック爪がそれぞれ係合し、前記取り付けフランジが、その下面のシール部材を介して天井壁上面に密着される。こうして、取り付けフランジを燃料タンクの定位置に固定し、開口部を閉鎖する。   There is also known a fuel supply device in which a fuel pump is arranged in a fuel tank mounted on a vehicle (for example, Japanese Patent Application Laid-Open No. 2003-120454). In this fuel supply device, an annular body having a plurality of lock claws protruding inward in the radial direction from the periphery of the opening provided in the ceiling wall of the fuel tank is welded to the ceiling wall. On the other hand, the fuel pump is provided with a mounting flange for closing the opening. Furthermore, a lock ring having a portion that contacts the upper surface of the flange and presses the flange and an engaging portion that engages with the lock claw is provided. By rotating the lock ring by a predetermined angle, a plurality of lock claws are engaged with a plurality of engaging portions of the lock ring, respectively, and the mounting flange is in close contact with the upper surface of the ceiling wall via a seal member on the lower surface thereof. . Thus, the mounting flange is fixed at a fixed position of the fuel tank, and the opening is closed.

このように、従来は、ボルト・ナットや保持部材を組み合わせて燃料ポンプを固定したり、ロックリングを使用して燃料ポンプを固定したりしている。
特開２００３−１２０４５４号公報 As described above, conventionally, the fuel pump is fixed by combining bolts, nuts, and holding members, or the fuel pump is fixed by using a lock ring.
Japanese Patent Laid-Open No. 2003-120454

従来の燃料供給装置では、燃料ポンプと燃料タンクとを組み立てるために、複数の部品を必要としていた。上記公報に開示された装置においても、ロックリングが燃料ポンプと別部品であるので、さらなる組み立ての簡略化が望まれている。   In the conventional fuel supply apparatus, a plurality of parts are required to assemble the fuel pump and the fuel tank. Also in the apparatus disclosed in the above publication, since the lock ring is a separate part from the fuel pump, further simplification of assembly is desired.

本発明の目的は、燃料ポンプと分離している部品を用いることなく燃料タンクに対して燃料ポンプを組み付けることができる燃料供給装置を提供することにある。   The objective of this invention is providing the fuel supply apparatus which can assemble | attach a fuel pump with respect to a fuel tank, without using the components isolate | separated from the fuel pump.

前記目的を達成するための本発明は、燃料タンクの天井壁に形成された円形開口部を貫通して装着される燃料ポンプが、前記燃料タンク内に配置されるポンプ本体と、前記ポンプ本体に結合されて燃料タンクの外部に燃料を吐出する燃料吐出部を上部に有するポンプケースとからなり、かつ、前記ポンプケースが、円形外周から放射方向に張り出した複数の第１爪部を有したフランジを一体に備えるとともに、前記燃料タンクの開口部の縁には前記天井壁上面との間に前記第１爪部が挿入可能な隙間を形成する複数の第２爪部が前記開口部の中心に向けて設けられ、さらに、前記各第２爪部間に前記各第１爪部が上方から適合できるように、複数の前記第１爪部および第２爪部のそれぞれの配置間隔が設定されている点に第１の特徴がある。   In order to achieve the above object, the present invention provides a fuel pump mounted through a circular opening formed in a ceiling wall of a fuel tank, a pump body disposed in the fuel tank, and the pump body. A flange having a plurality of first claw portions which are coupled to each other and discharge a fuel to the outside of the fuel tank, and have a plurality of first claws projecting radially from a circular outer periphery. And a plurality of second claw portions forming gaps into which the first claw portion can be inserted between the opening of the fuel tank and the top surface of the ceiling wall at the center of the opening. Furthermore, the arrangement intervals of the plurality of first claw portions and the second claw portions are set so that the first claw portions can be fitted from above to each second claw portion. There is a first feature.

また、本発明は、前記各第２爪部間に前記各第１爪部を上方から適合させて、その後、前記ポンプケースを前記フランジの面内で回動させて前記各第２爪部および前記天井壁上面間に前記各第１爪部を挿入させるに際して、前記フランジの回動終端を規定するストッパを備え、前記ストッパが、前記第１爪部および前記第２爪部のいずれかに形成された立ち上げ部である点に第２の特徴がある。   In the present invention, each first claw portion is adapted from above between each second claw portion, and then the pump case is rotated in the plane of the flange to thereby each second claw portion and When the first claw portions are inserted between the top surfaces of the ceiling wall, the first claw portions are provided with stoppers that define the rotation end of the flange, and the stoppers are formed on either the first claw portions or the second claw portions. The second feature is that it is a raised part.

さらに、本発明は、前記第１爪部が、前記ストッパによって回動規制された位置で前記第２爪部の端部と係合して該第１爪部が前記フランジの回動方向と反対方向に戻るのを抑止するための段差部を有している点に第３の特徴があり、前記ポンプケースが、その上面に該ポンプフランジを回動させる際に治具もしくは工具を係合させる凹凸部を有している点に第４の特徴がある。   Further, according to the present invention, the first claw portion engages with the end portion of the second claw portion at a position where the rotation of the first claw portion is restricted by the stopper, and the first claw portion is opposite to the rotation direction of the flange. There is a third feature in that it has a stepped portion for preventing it from returning to the direction, and the pump case engages a jig or a tool when the pump flange is rotated on its upper surface. There is a fourth feature in that it has an uneven portion.

上記第１〜第４の特徴を有する本発明によれば、燃料ポンプと分離独立した部品を使用することなく燃料タンクに対する燃料ポンプの結合を行うことができるので、部品の管理や作業の簡便さが改善される。すなわち、燃料タンクに対する燃料タンクの組み付けの際には、各第２爪部間にポンプケースと一体に形成されているフランジの各第１爪部を上方から各第２爪部に適合させ、フランジをその面内で回動させることにより、第１爪部は第２爪部と燃料タンク天井壁上面との隙間に挟まれてポンプケースは燃料タンクに結合される。   According to the present invention having the above first to fourth features, since the fuel pump can be coupled to the fuel tank without using a component that is separate and independent from the fuel pump, the management of the components and the simplicity of the work are possible. Is improved. That is, when the fuel tank is assembled to the fuel tank, each first claw portion of the flange formed integrally with the pump case between each second claw portion is fitted to each second claw portion from above, and the flange is Is rotated in the plane, the first claw portion is sandwiched between the second claw portion and the upper surface of the fuel tank ceiling wall, and the pump case is coupled to the fuel tank.

特に第２の特徴によれば、第１爪部のストッパによってフランジの回動終端が決定されるので、燃料ポンプを燃料タンクに組み付けたときの位置決めが一定する。その結果、燃料タンク内のポンプ本体の吸入口の指向方向も一定するので、予定した残燃料量まで燃料を吸い上げることができる。   In particular, according to the second feature, since the end of rotation of the flange is determined by the stopper of the first claw portion, the positioning when the fuel pump is assembled to the fuel tank is constant. As a result, the directing direction of the suction port of the pump main body in the fuel tank is also constant, so that the fuel can be sucked up to a predetermined remaining fuel amount.

また、第３の特徴によれば、予定の位置でフランジが回動方向の反対方向に戻るのを抑止できる。さらに、第４の特徴によれば、燃料タンクに対する燃料ポンプの着脱作業時に治具・工具を容易に適応させることができる。   Moreover, according to the 3rd characteristic, it can suppress that a flange returns in the direction opposite to a rotation direction in the plan position. Furthermore, according to the fourth feature, the jig / tool can be easily adapted when the fuel pump is attached to or detached from the fuel tank.

以下、図面を参照して本発明の一実施形態を説明する。図７は本発明の一実施形態に係る燃料供給装置を搭載した小型車両としてのスクータ型自動二輪車の側面透視図である。自動二輪車１のボディフレーム２は、ヘッドパイプ２ａ、ヘッドパイプ２ａの後面から急角度で下方へ延びるダウンチューブ部２ｂ、ダウンチューブ部２ｂの下端から後方へ水平に延びるフロア支持部２ｃ、フロア支持部２ｃの後端から垂直に立ち上がるピラー部２ｄ、およびピラー部２ｄの上端から後方上向きに傾斜して延びるリアレール部２ｅとからなる。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a side perspective view of a scooter type motorcycle as a small vehicle equipped with a fuel supply device according to an embodiment of the present invention. The body frame 2 of the motorcycle 1 includes a head pipe 2a, a down tube portion 2b extending downward at a steep angle from the rear surface of the head pipe 2a, a floor support portion 2c extending horizontally rearward from the lower end of the down tube portion 2b, and a floor support portion. The pillar portion 2d rises vertically from the rear end of 2c, and the rear rail portion 2e extends obliquely upward and rearward from the upper end of the pillar portion 2d.

ヘッドパイプ２ａには、前輪３ｆを軸支するフロントフォーク４から上方に延びるステアリングシャフト５ａが操向可能に支承される。ステアリングシャフト５ａの上部には、ハンドルバー５ｂが結合される。ピラー部２ｄの上端部には、パワーユニット６が枢軸７を介して上下揺動可能に懸架される。パワーユニット６およびリアレール部２ｅ間にリアクッション８が取り付けられる。   A steering shaft 5a extending upward from a front fork 4 that pivotally supports a front wheel 3f is supported on the head pipe 2a so as to be steerable. A handle bar 5b is coupled to the upper portion of the steering shaft 5a. A power unit 6 is suspended from an upper end portion of the pillar portion 2d via a pivot 7 so as to be swingable up and down. A rear cushion 8 is attached between the power unit 6 and the rear rail portion 2e.

パワーユニット６は、シリンダ部９ａを水平状態に近く前傾させたエンジン９と、エンジン９の一側部にあって、車体の後方へ延びるミッションケース１０ａを一体的に連ねる無段変速機１０とからなっており、ミッションケース１０ａの後端部に駆動輪として後輪３ｒが軸支される。   The power unit 6 includes an engine 9 in which a cylinder portion 9a is tilted forward in a horizontal state, and a continuously variable transmission 10 that is integrally connected to a transmission case 10a that extends to the rear of the vehicle body on one side of the engine 9. The rear wheel 3r is pivotally supported as a drive wheel at the rear end of the mission case 10a.

リアレール部２ｅ上には、ヘルメット等の大型の荷物の収納を可能にするラゲッジボックス１５が取り付けられ、ラゲッジボックス１５の上部前端部に該ボックス１５の蓋を兼ねる乗員用シート１６が開閉可能にヒンジ１６ａで結合される。フロア支持部２ｃの中央部には図示しない開口部が設けられ、この開口部に燃料タンク１８が挿入されて固定される。   On the rear rail portion 2e, a luggage box 15 capable of storing a large luggage such as a helmet is attached, and an occupant seat 16 serving also as a lid of the box 15 can be opened and closed at an upper front end portion of the luggage box 15. Combined at 16a. An opening (not shown) is provided at the center of the floor support 2c, and the fuel tank 18 is inserted and fixed in this opening.

次に、燃料タンク１８を含む燃料供給装置の構造を説明する。図１は、燃料タンクの横断面図、図２は燃料タンクの平面図、図３は燃料タンクの要部斜視図である。燃料タンク１８の略水平に配置される天井壁１８ｂには、そこに開口する給油口２０が設けられる。給油口２０には図示しないタンクキャップが被せられる。天井壁１８ｂには前記給油口２０より大きい開口部２２が設けられ、開口部２２を上下に貫通して燃料ポンプ２３が配置されている。燃料ポンプ２３は、燃料タンク１８の前部、すなわち給油口２０より前寄りの箇所に配置される。   Next, the structure of the fuel supply device including the fuel tank 18 will be described. FIG. 1 is a cross-sectional view of the fuel tank, FIG. 2 is a plan view of the fuel tank, and FIG. 3 is a perspective view of the main part of the fuel tank. A fuel supply port 20 is provided in a ceiling wall 18b disposed substantially horizontally in the fuel tank 18. A tank cap (not shown) is put on the fuel filler opening 20. The ceiling wall 18b is provided with an opening 22 larger than the fuel filler opening 20, and a fuel pump 23 is disposed through the opening 22 up and down. The fuel pump 23 is disposed at the front portion of the fuel tank 18, that is, at a position closer to the front than the fuel filler opening 20.

燃料ポンプ２３は、燃料タンク１８内の燃料を汲み上げられるように燃料タンク１８内にその要部が収容される。燃料ポンプ２３は、燃料油中に浸漬配置される電動式の燃料ポンプ本体（モータ）２４と、このモータ２４の吸入口２５に接続される燃料ストレーナ２６と、燃料ポンプ２３の吐出圧を調整する圧力レギュレータや逆止弁（いずれも図示しない）を内部に収容して保持するポンプケース２７を備える。   The main part of the fuel pump 23 is accommodated in the fuel tank 18 so that the fuel in the fuel tank 18 can be pumped up. The fuel pump 23 adjusts the discharge pressure of the fuel pump 23, the electric fuel pump main body (motor) 24 that is immersed in the fuel oil, the fuel strainer 26 connected to the suction port 25 of the motor 24, and the fuel pump 23. A pump case 27 that houses and holds a pressure regulator and a check valve (both not shown) is provided.

ポンプケース２７は、上面視で円形に形成されていて、半径方向に水平に延在して開口部２２を覆うフランジ２８を有する。このフランジ２８の外周には、さらに半径方向に拡張された複数の爪部（第１爪部）２９が予定間隔で配置される。この爪部２９の配置間隔は、燃料タンク１８側に開口部２２に沿って接合されたリングプレート３０の、複数の爪部３１の配置間隔に適合するように設定されている。双方の爪部２９，３１が互いに係合してポンプケース２７は燃料タンク１８の天井壁１８ｂに結合されている。燃料ポンプ２３を燃料タンク１８に対して着脱させるための構造はさらに後述する。   The pump case 27 is formed in a circular shape when viewed from above, and has a flange 28 that extends horizontally in the radial direction and covers the opening 22. On the outer periphery of the flange 28, a plurality of claw portions (first claw portions) 29 extended in the radial direction are arranged at a predetermined interval. The arrangement interval of the claw portions 29 is set so as to match the arrangement interval of the plurality of claw portions 31 of the ring plate 30 joined to the fuel tank 18 side along the opening 22. Both the claw portions 29 and 31 are engaged with each other, and the pump case 27 is coupled to the ceiling wall 18 b of the fuel tank 18. A structure for detaching the fuel pump 23 from the fuel tank 18 will be described later.

ポンプケース２７のフランジ２８の下面には、シール部材つまりパッキン３２が収容される環状凹部３３が形成されていて、パッキン３２を介して天井壁１８ｂの上面とフランジ２８の下面とが密着している。   An annular recess 33 is formed on the lower surface of the flange 28 of the pump case 27 to accommodate a seal member, that is, a packing 32, and the upper surface of the ceiling wall 18 b and the lower surface of the flange 28 are in close contact with each other via the packing 32. .

ポンプケース２７の上部には、燃料の吐出用コネクタ３４とモータ２４の給電用コネクタ３５とが、図示しない燃料噴射弁につながる管と給電用電線とをそれぞれ接続可能なように、燃料タンク１８の外部に露出した状態で設けられている。   A fuel discharge connector 34 and a power supply connector 35 of the motor 24 are connected to a pipe connected to a fuel injection valve (not shown) and a power supply wire on the upper part of the pump case 27, respectively. It is provided in an exposed state.

次に、前記フランジの爪部とリングプレートの爪部との係合部を詳細に説明する。図４は、双方の爪部２９，３１の係合を解除した状態、つまりフランジ２８が単に燃料タンク１８の天井壁１１８ｂに乗っている状態を示す燃料タンクの平面図である。さらに、図５および図６はそれぞれ図２のＡ−Ａ断面図およびＢ−Ｂ断面図である。   Next, the engaging portion between the flange claw and the ring plate claw will be described in detail. FIG. 4 is a plan view of the fuel tank showing a state where both the claws 29 and 31 are disengaged, that is, a state where the flange 28 is simply on the ceiling wall 118 b of the fuel tank 18. 5 and 6 are respectively a cross-sectional view taken along line AA and a cross-sectional view taken along line BB in FIG.

燃料ポンプ２３を燃料タンク１８に組み付ける際、まず、図４に示すように、フランジ２８の各爪部２９がリングプレート３０の凹部つまり各爪部３１同士の間に位置するように燃料ポンプ２３を燃料タンク１８に対して位置合わせする。爪部２９，３１のうち一部２９ａ，３１ａが他と異なった形状を有している。燃料ストレーナ２６を燃料タンク１８の底部予定位置に位置するように燃料ポンプ２３の向きを決定するためのものである。   When assembling the fuel pump 23 to the fuel tank 18, first, as shown in FIG. 4, the fuel pump 23 is placed so that each claw portion 29 of the flange 28 is positioned between the recesses of the ring plate 30, that is, between the claw portions 31. Align with the fuel tank 18. Among the claw portions 29 and 31, some 29a and 31a have shapes different from others. This is for determining the orientation of the fuel pump 23 so that the fuel strainer 26 is positioned at the planned bottom portion of the fuel tank 18.

図１に示したように、フランジ２８の爪部２９はリングプレート３０の爪部３１の下方にあって、天井壁１８ｂと爪部３１とで挟まれた状態で固定させる。そのために、図４の状態から時計方向にポンプケース２７を回動させて、爪部２９を爪部３１の下に潜り込ませる。図６に示すように爪部３１は、天井壁１８ｂに対して平行な面３１ｂと天井壁１８ｂに対して角度を有する勾配面３１ｃとを有し、フランジ２８の爪部２９が前記平行な面３１ａと天井壁１８ｂとの間に挟まれてフランジ２８は天井壁１８ｂに固定される。爪部２９は図６に示すように天井壁１８ｂに対して直立する部分をストッパ２９ｂとして備えているので、このストッパ２９ｂが爪部３１の端面に当接した位置でフランジ２８の回動は制限される。   As shown in FIG. 1, the claw portion 29 of the flange 28 is below the claw portion 31 of the ring plate 30, and is fixed while being sandwiched between the ceiling wall 18 b and the claw portion 31. For this purpose, the pump case 27 is rotated in the clockwise direction from the state shown in FIG. As shown in FIG. 6, the claw portion 31 has a surface 31b parallel to the ceiling wall 18b and a sloped surface 31c having an angle with respect to the ceiling wall 18b, and the claw portion 29 of the flange 28 is parallel to the parallel surface. The flange 28 is fixed to the ceiling wall 18b by being sandwiched between 31a and the ceiling wall 18b. As shown in FIG. 6, the claw portion 29 is provided with a portion standing upright with respect to the ceiling wall 18b as a stopper 29b. Therefore, the rotation of the flange 28 is restricted at a position where the stopper 29b abuts the end surface of the claw portion 31. Is done.

一方、ストッパ２９ｂが爪部３１の端面に当接した位置では、図５の断面形状で理解できるように、リングプレート３０の爪部３１はフランジ２８の爪部２９に形成された戻り防止部としての段差部２９ｃを乗り越えている。したがって、一旦、この段差部２９ｃを乗り越した状態では組み付け時よりも大きな力でポンプケース２７を図１の反時計方向に回動させないと、爪部２９，３１の互いの係合は解除されない。   On the other hand, at the position where the stopper 29b is in contact with the end surface of the claw portion 31, the claw portion 31 of the ring plate 30 serves as a return prevention portion formed on the claw portion 29 of the flange 28, as can be understood from the cross-sectional shape of FIG. Over the step 29c. Therefore, once the stepped portion 29c is passed, the engagement between the claw portions 29 and 31 is not released unless the pump case 27 is rotated counterclockwise in FIG.

なお、前記ストッパ２９ｂは爪部２９の全てに形成してもよいが、少なくとも一つの爪部２９にだけ、好ましくは一つおきに、複数の爪部２９に形成するようにしてもよい。   The stopper 29b may be formed on all the claw portions 29, but may be formed only on at least one claw portion 29, preferably every other claw portion 29.

また、ポンプケース２７を回動させるために、ポンプケース２７の上面に突起やリブまたは凹部を形成するのがよい。ポンプケース２７を回動させるための棒状の治具もしくは工具を突起やリブに係合させたり、突起を有する治具もしくは工具を凹部に係合させたりするのに好都合だからである。   Further, in order to rotate the pump case 27, it is preferable to form a protrusion, a rib or a recess on the upper surface of the pump case 27. This is because it is convenient for engaging a rod-shaped jig or tool for rotating the pump case 27 with the protrusion or rib, or engaging the jig or tool having the protrusion with the recess.

また、ポンプケース２７の戻りを規制するためのストッパは、フランジ２８側の爪部２９に限らず、リングプレート３０側の爪部３１に、下方に延びる垂直部を設けて爪部２９の回動方向前端が当接するようにしてもよい。   The stopper for restricting the return of the pump case 27 is not limited to the claw portion 29 on the flange 28 side, but a claw portion 31 on the ring plate 30 side is provided with a vertical portion extending downward to rotate the claw portion 29. You may make it the front end of a direction contact | abut.

本発明の一実施形態に係る燃料ポンプが取り付けられた燃料タンクの断面図である。It is sectional drawing of the fuel tank with which the fuel pump which concerns on one Embodiment of this invention was attached. 本発明の一実施形態に係る燃料ポンプを取り付けられた燃料タンクの平面図である。It is a top view of the fuel tank with which the fuel pump which concerns on one Embodiment of this invention was attached. 本発明の一実施形態に係る燃料ポンプ取り付け準備状態の燃料ポンプの平面図である。It is a top view of the fuel pump of the fuel pump attachment preparation state which concerns on one Embodiment of this invention. 本発明の一実施形態に係る燃料ポンプが取り付けた燃料タンクの要部斜視図である。It is a principal part perspective view of the fuel tank with which the fuel pump which concerns on one Embodiment of this invention was attached. 図２のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図２のＢ−Ｂ断面図である。It is BB sectional drawing of FIG. 本発明の一実施形態に係る燃料タンクを備えたスクータ型自動二輪車の左側面図である。1 is a left side view of a scooter type motorcycle including a fuel tank according to an embodiment of the present invention.

符号の説明Explanation of symbols

１…自動二輪車、 １８…燃料タンク、 １８ｂ…タンク天井壁、 ２２…開口部、 ２３…燃料ポンプ、 ２４…燃料ポンプ本体、 ２７…ポンプケース、 ２８…フランジ、 ２９…（第１）爪部、 ２９ａ…ストッパ、 ３０…リングプレート、 ３１…（第２）爪部   DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 18 ... Fuel tank, 18b ... Tank ceiling wall, 22 ... Opening part, 23 ... Fuel pump, 24 ... Fuel pump main body, 27 ... Pump case, 28 ... Flange, 29 ... (1st) Nail part, 29a ... stopper, 30 ... ring plate, 31 ... (second) claw

Claims (6)

燃料タンクと、該燃料タンクの天井壁に形成された円形開口部を貫通して装着される燃料ポンプとからなる燃料供給装置において、
前記燃料ポンプが、
前記燃料タンク内に配置されるポンプ本体と、
前記ポンプ本体に結合されて燃料タンクの外部に燃料を吐出する燃料吐出部を上部に有するポンプケースとからなり、
前記ポンプケースが、
円形外周から放射方向に張り出した複数の第１爪部を有したフランジを一体に備えるとともに、前記ポンプケースの一部が前記開口部の内側に位置するように配設されており、
前記燃料タンクの天井壁には、前記開口部の中心に向かって上面の高さが低くなる段差部が形成されており、
前記段差部の上段側の上面に、平板状のリングプレートが接合されており、
前記リングプレートには、前記段差部の下段側の上面との間に前記第１爪部が挿入可能な隙間を形成する複数の第２爪部が、前記開口部の中心に向けて設けられ、
前記各第２爪部間に前記各第１爪部が上方から適合できるように複数の前記第１爪部および第２爪部のそれぞれの配置間隔が設定されており、
前記第１爪部は、前記各第２爪部間に前記各第１爪部を上方から適合させて、その後、前記ポンプケースを前記フランジの面内で回動させて前記各第２爪部および前記天井壁上面間に前記各第１爪部を挿入させることにより、前記リングプレートの第２爪部に係合され、
前記フランジの下面部に、前記段差部の下段側の上面と密着するパッキンが収容される環状凹部が形成されており、
前記パッキンが、Ｌ字型断面の環状部材であり、
前記環状凹部は、その径方向内側の端部が、前記開口部の縁より径方向内側に位置するように形成されており、
前記各第２爪部間に前記各第１爪部を上方から適合させた際および前記第１爪部と第２爪部とを係合させた際に、前記パッキンの一端部が、前記環状凹部と前記段差部の下段側の上面との間に挟まれると共に、前記パッキンの他端部が、前記ポンプケースの側面と前記開口部の側面との間に挟まれるように構成されていることを特徴とする燃料供給装置。 In a fuel supply device comprising a fuel tank and a fuel pump mounted through a circular opening formed in the ceiling wall of the fuel tank,
The fuel pump is
A pump body disposed in the fuel tank;
A pump case coupled to the pump body and having a fuel discharge portion at the top for discharging fuel to the outside of the fuel tank;
The pump case is
A flange having a plurality of first claw portions projecting radially from a circular outer periphery is integrally provided, and a part of the pump case is disposed so as to be located inside the opening,
On the ceiling wall of the fuel tank, there is formed a stepped portion having a lower upper surface toward the center of the opening,
A flat ring plate is joined to the upper surface of the stepped portion,
The ring plate is provided with a plurality of second claw portions that form a gap into which the first claw portion can be inserted between the upper surface on the lower side of the step portion toward the center of the opening,
The arrangement intervals of the plurality of first claw portions and the second claw portions are set so that the first claw portions can be fitted from above between the second claw portions,
The first claw portion is adapted to fit each first claw portion between the second claw portions from above, and then the pump case is rotated in the plane of the flange to each second claw portion. And by inserting the first claw portions between the upper surfaces of the ceiling walls , the second claw portions of the ring plate are engaged,
An annular recess is formed in the lower surface of the flange to accommodate a packing that is in close contact with the upper surface of the lower step of the step .
The packing is an annular member having an L-shaped cross section;
The annular recess is formed so that the radially inner end thereof is positioned radially inward from the edge of the opening,
When the first claw portions are fitted between the second claw portions from above and when the first claw portion and the second claw portion are engaged with each other, one end portion of the packing is formed into the annular shape. It is sandwiched between the recess and the upper surface on the lower side of the stepped portion, and the other end of the packing is configured to be sandwiched between the side surface of the pump case and the side surface of the opening. A fuel supply device. 前記各第２爪部間に前記各第１爪部を上方から適合させて、その後、前記ポンプケースを前記フランジの面内で回動させて前記各第２爪部および前記天井壁上面間に前記各第１爪部を挿入させるに際して、前記フランジの回動終端を規定するストッパを備え、
前記ストッパが、前記第１爪部および前記第２爪部のいずれかに形成された立ち上げ部であることを特徴とする請求項１記載の燃料供給装置。 The first claw portions are fitted between the second claw portions from above, and then the pump case is rotated in the plane of the flange so as to be between the second claw portions and the upper surface of the ceiling wall. When inserting each of the first claw portions, provided with a stopper that defines the rotation end of the flange,
The fuel supply device according to claim 1, wherein the stopper is a rising portion formed on one of the first claw portion and the second claw portion. 前記第１爪部が、前記ストッパによって回動規制された位置で前記第２爪部の端部と係合して該第１爪部が前記フランジの回動方向と反対方向に戻るのを抑止するための段差部を有していることを特徴とする請求項２記載の燃料供給装置。   The first claw portion is engaged with the end portion of the second claw portion at a position where the rotation of the first claw portion is restricted by the stopper, and the first claw portion is prevented from returning in the direction opposite to the rotation direction of the flange. The fuel supply device according to claim 2, further comprising a step portion for performing the step. 前記ポンプケースが、その上面に該ポンプフランジを回動させる際に治具もしくは工具を係合させる凹凸部を有していることを特徴とする請求項１〜３のいずれかに記載の燃料供給装置。   The fuel supply according to any one of claims 1 to 3, wherein the pump case has an uneven portion for engaging a jig or a tool on the upper surface of the pump case when the pump flange is rotated. apparatus. 前記複数の第１爪部および前記複数の第２爪部は、前記燃料タンクに燃料ポンプを組み付けた際に前記ポンプケースの燃料ストレーナが燃料タンクの底部予定位置に位置するように、それぞれの形状が決定されていることを特徴とする請求項１〜４のいずれかに記載の燃料供給装置。   The plurality of first claw portions and the plurality of second claw portions have respective shapes so that the fuel strainer of the pump case is located at a predetermined position of the bottom of the fuel tank when a fuel pump is assembled to the fuel tank. The fuel supply device according to claim 1, wherein the fuel supply device is determined. 前記第２爪部の下面には、燃料タンクの天井壁に対して所定の角度を有する勾配面が、該第２爪部の周方向に沿って形成されていることを特徴とする請求項１〜５のいずれかに記載の燃料供給装置。   The inclined surface having a predetermined angle with respect to the ceiling wall of the fuel tank is formed on the lower surface of the second claw portion along the circumferential direction of the second claw portion. The fuel supply apparatus in any one of -5.
JP2004023330A 2004-01-30 2004-01-30 Fuel supply device Expired - Lifetime JP4386424B2 (en)

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CNB2005100017249A CN1313296C (en) 2004-01-30 2005-01-14 Fuel supply device
IT000022A ITTO20050022A1 (en) 2004-01-30 2005-01-19 FUEL SUPPLY SYSTEM
ES200500137A ES2274677B1 (en) 2004-01-30 2005-01-26 FUEL SUPPLY SYSTEM.

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