1379037 九、發明說明 【發明所屬之技術領域】 本發明係有關在自動二輪車的燃料槽安裝燃料泵用的 構造。 【先前技術】 以往的燃料泵的安裝構造，已知有在燃料槽的開口部 固定著形成有階段部的基部’該階段部係與燃料栗的蓋部 嵌合’進而，與基部之間設有間隙而熔接著導引構件之構 造。該燃料泵的安裝構造中，在階段部裝設0型環再將 燃料泵收容於燃料槽内之後，藉由在基部和導引構件之間 隙插入固定件（Retainer)的方式，於藉由〇型環密封燃料 泵和燃料槽之間的狀態下，將燃料泵固定在燃料槽（例如 參照日本專利特開2〇〇7·127〇〇3號公報）。 而在日本專利特開2007-127003號記載的燃料泵的安 裝構造中’一面將基部及導引構件定位，一面熔接在燃料 槽的開口部，進而藉由插入固定件的方式安裝燃料泵，因 此零件數及安裝工時增加、製造成本增加。 【發明內容】 本發明之一以上之實施例，係提供可削減零件數及安 裝工時、使燃料泵不會鬆動且以一次操作即可容易地安裝 之低價之燃料泵的安裝構造。 本發明之一以上之實施例中，根據第1觀點，燃料栗 -5- 1379037 的安裝構造係具備：泵安裝孔（6)，係設在燃料槽（i)的壁 面’安裝有燃料泵（10):凸緣部（13)，係設在前述燃料泵 (10)的筒部；卡止片（17)，係設在前述泵安裝孔（6);及卡 止部（25、41、42、45、48、50、53、56)，係設在前述燃 料泵（1〇)的前述筒部。藉由將前述卡止片（17)挾持在前述 凸緣部（13)和前述卡止部（25、41、42' 45、48、50、53 、5 6)之間的方式，將前述燃料泵（10)卡止在前述燃料槽 (1)。 根據第2觀點，如上述第1觀點的燃料泵的安裝構造 ，前述燃料泵（10)透過密封構件（33)而安裝在前述泵安裝 孔（6)亦可，前述燃料槽（1)係在前述泵安裝孔（6)周圍具有 從前述燃料槽（1)的壁面凹陷的凹部（1 6)亦可，前述密封構 件（33)被裝設在設於前述凸緣部（13)下部的階段部（24)、 和前述凹部（16)内周面之間亦可，於前述燃料泵（10)和前 述卡止片（17)之間設有徑方向間隙（S)之狀態下，將前述燃 料泵（10)安裝在前述燃料槽（1)亦可。 根據第3觀點，如上述第1或第2觀點之燃料泵的安 裝構造，前述卡止部（25、41、45、48、50)具有彈性部 (27、41、46' 49、51)亦可，藉由前述彈性部（27、41、 46、49、51)的彈力，將前述卡止片（17)挾持在前述凸緣 部（13)和前述卡止部（25、41、45、48、50)之間亦可。 根據第4觀點，如上述第1或第2觀點之燃料泵的安 裝構造，前述卡止部（25、42、45、48' 50、53、56)至少 在其一部分的下面具有肋（44)。 1379037 根據第5觀點，如上述第1或第2觀點之燃料泵的安 裝構造’前述卡止片（17)在與前述卡止部（5〇)的接觸面具 有凸部（52)亦可。 根據第6觀點，如上述第1或第2觀點之燃料泵的安 裝構造，前述卡止片（17)沿著圓周方向彎曲亦可。 根據第7觀點’如上述第1或第2觀點之燃料泵的安 裝構造’前述卡止片（17)由高度不同的複數之卡止片（17) 構成亦可。 根據第8觀點，如上述第1或第2觀點之燃料泵的安 裝構造，前述卡止部（42、45、48、50、53)亦可具有定位 突起部（43)，係於將前述卡止片（17)挾持在前述凸緣部 (13)和前述卡止部（25、41、42、45、48、50、53)之間並 使前述燃料泵（10)旋轉時，抵接在前述卡止片（17)，定位 前述燃料泵（10)的旋轉方向相位。 根據第9觀點，如上述第1或第2觀點之燃料泵 的安裝構造，前述燃料槽（1)具有朝上方突出形成的凸部 (20)亦可，前述燃料泵（1〇)具有與前述燃料槽（1)的前述凸 部（20)卡合或抵接之腕部（30)亦可。 根據第10觀點，如上述第1或第2觀點之燃料泵的 安裝構造，前述凸緣部（13)在其下面具有環狀的密封面 (54)亦可，藉由裝設在前述密封面（54)的密封構件（55)， 密封前述凸緣部（5 5)和前述燃料槽（1)的壁面之間亦可。 根據第Π觀點，如上述第1或第2觀點之燃料泵的 安裝構造，前述泵安裝孔（6)周圍形成有圓環狀的捲邊（19) 1379037 亦可。。 根據第12觀點，如上述第1或第2觀點之燃料栗的 安裝構造’前述卡止部（56)藉由操作設在燃料泵（10)上部 的操作部（5 8)而朝徑方向移動亦可。 根據上述第1觀點，泵安裝孔設有複數之卡止片，燃 料栗的的筒部設有以和凸緣部挾持卡止片的方式將燃料泵 卡止在燃料槽的卡止部，因此僅以將燃料泵以不和燃料槽 側的卡止片和燃料泵側的卡止部接觸的方式插入泵安裝孔 並使其旋轉’燃料槽的卡止片就被燃料泵的凸緣部及卡止 部挾持，因此使燃料泵不會鬆動且可藉由一次操作容易地 安裝在燃料槽。且，可削減零件數及安裝工時，因此可提 供低價的燃料泵的安裝構造。 根據上述第2觀點，燃料槽係在泵安裝孔周圍具有比 燃料槽壁面形成更低的凹部，凸緣部的階段部和凹部的内 周面之間裝設有密封構件，燃料泵和卡止片之間設有徑方 向間隙’於此狀態下，爲了將燃料泵安裝在燃料槽，燃料 泵和燃料槽之間係藉由密封構件被密封，並且將泵安裝孔 中心和燃料泵中心予以定位。且，燃料泵和泵安裝孔之間 形成有間隙，可防止燃料泵和泵安裝孔之干渉。 根據上述第3觀點，卡止部的至少一部分具有彈性部 ’藉由彈性部的彈力在與凸緣部之間挾持卡止片，因此， 例如即使製造時產生不穩定，仍可藉由彈性部的彈力確實 地保持、固定燃料泵使其不鬆動。 根據上述第4觀點，卡止部係至少其一部分的下面形 -8- 1379037 成肋’因此卡止部的強度被強化。藉此，例如即使有大的 力量作用在燃料泵，仍可極力防止燃料泵偏離泵安裝孔。 根據上述第5觀點，卡止片在與卡止部之接觸面具有 凸部，因此賦予卡止片彈性。藉此，例如即使製造時產生 不穩定’仍可藉由卡止片的彈力而確實地保持燃料泵不鬆 動。 根據上述第6觀點，卡止片係沿著圓周方向彎曲形成 ’因此卡止片被賦予彈性。藉此，例如即使製造時產生不 穩定’仍可藉由卡止片的彈力而確實地保持燃料泵不鬆動 〇 根據上述第7觀點，卡止片係由高度不同的複數之卡 止片所構成，因此燃料泵係一面使卡止片彈性變形一面安 裝。藉此，例如即使製造時產生不穩定，仍可藉由卡止片 的彈力而確實地保持燃料泵不鬆動。 根據上述第8觀點，卡止部具有抵接在卡止片用以將 燃料泵的旋轉方向相位定位的定位突起部，因此不須增加 零件數，僅以將燃料泵旋轉到定位突起部抵接在卡止片， 即可在預定位置定位且確實地安裝。 根據上述第9觀點，燃料槽具有朝上方突出的凸部， 且燃料泵具有卡合或抵接凸部的腕部，因此藉由凸部和腕 部卡合或抵接的方式可防止燃料泵不必要的旋轉。 根據上述第10觀點，凸緣部下面具有環狀密封面， 藉由裝設在該密封面的密封構件，將凸緣部和燃料槽壁面 之間予以密封，因此可獲得高密封性能。且，藉由密封構 -9- l379〇37 件的彈力可使燃料泵保持不鬆動。 根據上述第11觀點，燃料槽在泵安裝孔周圍形成有 圓環狀捲邊，因此泵安裝孔周邊的剛性被提升。藉此，例 如即使振動等作用在燃料槽，仍可確實地保持燃料泵。 根據上述第12觀點，藉由操作設在燃料泵上部的操 作部，可使卡止部朝徑方向進出自如，由於以凸緣部和卡 止部挾持卡止片，因此安裝時不須旋轉燃料泵，只要操作 操作部即可安裝燃料泵。藉此，即使安裝空間狹窄的情況 下，仍可容易地將燃料泵安裝在燃料槽。 其他特徵及效果可從實施例之記載及附件之申請專利 範圍而明瞭。 【實施方式】 以下，針對本發明各典型的實施形態，根據附圖詳細 地說明。此外，圖式係依符號對象閱讀。 (第1實施形態） 首先，參照第1圖〜第7圖，針對本發明所相關之燃 料泵的安裝構造的1實施形態進行說明。第1圖係適用本 發明所相關之燃料泵的安裝構造之自動二輪車之側視圖， 第2圖係適用本發明所相關之燃料泵的安裝構造之燃料槽 之立體圖，第3圖係第2圖所示的燃料槽之一部分缺口側 視圖，第4圖係第2圖所示的燃料泵的安裝構造之槪大致 立體圖，第5圖係燃料泵之剖視圖，第6圖（a)及（b)係本 -10- 1379037 發明所相關之燃料泵的安裝構造之第1實施形態之說明圖 ，第6圖（a)爲俯視圖，第6圖（b)爲主要部分側視圖，第 7圖係第6圖（a)所示的A-A線箭頭方向剖視圖。 本實施形態之自動二輪車100係如第1圖所示，固定 地連結在主車架80的頭管81軸設著左右一對之前叉85 ，其下端部將前輪WF旋轉自如地軸支著。前叉85可藉 由把手82而被操舵，覆蓋前輪WF上方的前擋板84係與 前叉85 —體地被操舵。且，前擋板84上方配設有前蓋 83，該前蓋83和上蓋86 —起覆蓋著主車架80。且，主 車架80下方固定地吊下當作内燃機關的引擎87。 且，主車架80後方連結著座墊架90，用於支撐車體 蓋88和乘座者入座的座墊89等，此車輛後方在座墊89 下方設置有燃料槽1。且，一端軸安裝在主車架80的後 方下部之搖臂91，係以藉由連接在座墊架90的後緩衝器 92吊下的方式，可將一端軸當作旋轉軸搖動，其他端部 則將當作驅動輪的後輪WR旋轉自如地軸支著。然後，本 發明所相關之燃料泵的安裝構造係適用在燃料槽丨。此外 ，第1圖中的符號93係空氣清靜器、符號94係節流體、 符號95係噴射器（燃料噴射裝置）、符號96係燃料管。 燃料槽1係如第2圖及第3圖所示，將鋼板被沖壓成 形的上側構件2及下側構件3，在各周緣部4以熔接接合 在的方式當作一體的容器被形成者。然後，上個j構彳牛2設 有：給油時被開閉的給油口 5'用於安裝燃料栗10的栗 安裝孔6、設在泵安裝孔6周圍而比燃料槽1的壁面形成 1379037 小徑而形成有階段部24。且，本體部11外周面形成有複 數（本實施形態中以45°間隔共計8個）之卡止部25，係 卡合泵安裝孔6的卡止片17，該卡止部25具有基部26 和爪部27，該基部26係從凸緣部13下方朝徑方向突出 形成，該爪部27係從該基部26朝圓周方向以懸臂狀延伸 設置的彈性部。且，爪部27具有彈性，可朝上下方向撓 曲。且，‘凸緣部13下面和爪部27上面之間隙，被設定成 僅比栗安裝孔6的卡止片17之板厚略窄。 凸緣部13外周緣形成有一對朝徑方向突出之腕部3〇 ’該腕部30前端形成有將燃料泵1〇安裝在泵安裝孔6時 用於卡合燃料槽1的凸部20之平面視大致u字狀的卡合 凹部31。且，如第7圖所示’腕部30前端形成有傾斜面 32’使腕部30的厚度從卡合凹部31側朝向圓周方向外方 逐漸地變薄，以使腕部30容易越過凸部20。 接著’說明燃料泵10對燃料槽1的安裝程序。如第 6圖所示，首先在燃料泵1〇的階段部24裝設以耐油性橡 膠等成形的圓環狀密封構件3 3之後，—面傾斜燃料泵！〇 一面從過濾器12前端插入泵安裝孔6。然後，進行燃料 栗10的卡止部25和泵安裝孔6的插入溝18之相位對準 ，以卡止部25通過插入溝丨8的方式插入，凸緣部13推 入至接觸在卡止片17’使燃料泵10朝箭號X方向旋轉。 藉此，卡止片17進入凸緣部13和卡止部25之間隙，藉 由卡止部25的爪部27的彈力而被挾持在凸緣部13和卡 止部2 5之間。 -13- 1379037 將燃料泵10插入泵安裝孔6時，燃料泵10的本體部 1 1和泵安裝孔6(卡止片1 7前端）之間設有間隙S，而可防 止泵插入時的燃料泵10和卡止片17之干渉。且，密封構 件33在燃料泵10的階段部24和燃料槽1的凹部16内周 面之間彈性變形。藉此，燃料槽1和燃料泵10之間被液 密地封止，且燃料栗10定位於泵安裝孔6的中心。 且，使燃料泵10旋轉的同時，凸緣部13的一對之腕 部30越過一對之凸部20，腕部30的卡合凹部31和凸部 20卡合。藉此’燃料泵10被定位且被固定在燃料槽1， 因此可防止燃料泵10不必要的旋轉。 如以上說明，根據本實施形態之燃料泵的安裝構造， 由於泵安裝孔6設有複數之卡止片17，在燃料泵10的本 體部11設有卡止部25，該卡止部25係以和凸緣部13挾 持卡止片17的方式將燃料泵1〇卡止在燃料槽1，僅以燃 料槽1側的卡止片17和燃料泵10側的卡止部25不接觸 燃料泵10的方式，將燃料泵10插入泵安裝孔6且使其旋 轉’由於燃料槽1的卡止片17係藉由燃料泵1〇的凸緣部 13及卡止部25而被挾持，因此燃料泵1〇不會鬆動且可 以容易地以一次操作安裝在燃料槽1。且，因可削減零件 數及安裝工時而可以提供低價的燃料栗10之安裝構造。 且，根據本實施形態之燃料泵的安裝構造，燃料槽1 具有在泵安裝孔6周圍形成比燃料槽1壁面更低的凹部 16’在凸緣部13的階段部24和凹部16的内周面之間裝 設有密封構件33，燃料泵1〇和卡止片17之間設有徑方 -14- l379〇37 向間隙S’於此狀態下將燃料泵i〇安裝在燃料槽1，因此 燃料泵10和泵安裝孔6之間形成有間隙S，可防止泵插 入時的燃料泵10和泵安裝孔6之干渉。且，密封構件33 在燃料泵10的階段部24和燃料槽1的凹部16内周面之 間彈性變形，因此燃料槽1和燃料泵1〇之間被液密地封 止，並將燃料泵10定位在泵安裝孔6的中心。 且’根據本實施形態之燃料泵的安裝構造，卡止部 25具有爪部27，藉由爪部27的彈力在與凸緣部13之間 挾持卡止片丨7’因此，例如即使製造時產生不穩定，仍 可藉由爪部27的彈力而確實地保持、固定燃料泵不鬆 動。 再者，根據本實施形態之燃料泵的安裝構造，燃料槽 1具有朝上方突出的凸部20，燃料泵10具有卡合凸部20 的腕部30，因此以使凸部20和腕部30卡合的方式，可 防止燃料泵10不必要的旋轉。 (第2實施形態） 接著’參照第8圖（a)及（b)說明有關本發明所相關之 燃料泵的安裝構造之第2實施形態。此外，本實施形態之 燃料泵的安裝構造中，凸緣部的一對之腕部及燃料泵的卡 止部之形狀係與第1實施形態之燃料泵的安裝構造不同， 其他部分則與第1實施形態之燃料泵的安裝構造同様，因 此對相同部分附加相同符號或相等符號，而簡略或省略其 說明。第8圖（a)及（b)係本發明所相關之燃料泵的安裝構 -15- 1379037 造之第2實施形態之說明圖，第8圖（a)爲俯視圖，第8 圖（b)爲主要部分側視圖。 本實施形態中，如第8圖（a)所示，在燃料泵10的本 ' 體部11外周面，朝徑方向突出形成有：以90°間隔配置 • 的4個第1卡止部41、和在該第1卡止部41、41間（即 ，從第1卡止部41旋轉45°之相位）以90°間隔配置的4 個第2卡止部42。 φ 第1卡止部41形成爲平板狀懸臂樑，當作可朝上下 方向撓曲之彈性部。第1卡止部41上面和凸緣部13下面 之間隙比泵安裝孔6的卡止片1 7之板厚略窄。 第2卡止部42在圓周方向的一端部（本實施形態中逆 時鐘旋轉方向側之端部）形成有朝上方突出的定位突起部 43’該突起部43在燃料泵10被安裝時，係抵接在卡止片 17端面，將燃料泵1〇的旋轉方向相位予以定位。且，第 2卡止部42下面設有肋44,補強第2卡止部42的強度。 • 凸緣部13具有朝徑方向突出的板狀之一對之腕部40 。且’燃料槽1形成有一對之凸部20,在將燃料泵1〇安 裝到栗安裝孔6時，該一對之凸部20在各腕部40成爲逆 時鐘方向側的位置朝上方突出。 • 本實施形態之燃料泵10的安裝程序，係將燃料栗10 • 在第1卡止部41及第2卡止部42和栗安裝孔6的插入溝 18進行相位對準後，插入栗安裝孔6使其朝箭號X方向 旋轉。藉此’卡止片17進入凸緣部13和第1卡止部41 及第2卡止部42之間隙’藉由第1卡止部41的彈力被挾 -16- 1379037 持在凸緣部13和第丨卡止部4i之間。 且，使燃料泵10旋轉之同時，一對之腕部40 -性變形一面越過凸部20，一對之腕部40和凸部20 ’且第2卡止部42的定位突起部43抵接在卡止片 • 面。藉此’燃料泵1〇之朝箭號X方向的旋轉藉由淀 起部43被阻止、朝箭號χ反方向的旋轉藉由凸部 阻止’因此確實地被固定在定位狀態。 ® 如以上說明’根據本實施形態之燃料泵的安裝構 燃料槽1的卡止片17係藉由第1卡止部41的彈力， 持在燃料泵10的凸緣部13和第1卡止部41之間， 燃料栗10不會鬆動且可以—次操作而容易地被安裝 料槽1。 且’根據本實施形態之燃料泵的安裝構造，第2 部42下面形成肋44，因此第2卡止部42的強度祕 。藉此’例如即使大的力量作用在燃料泵1〇，仍可 防止燃料泵10偏離泵安裝孔6。 且’根據本實施形態之燃料泵的安裝構造，第2 部42具有抵接在卡止片17用於定位燃料泵1〇的旋 向相位之定位突起部4 3 ’因此不須增加零件數，僅 燃料泵10旋轉到定位突起部43抵接在卡止片17, 在預定位置定位且確實地安裝。 再者，根據本實施形態之燃料泵的安裝構造，燃 1具有朝上方突出的凸部20，燃料泵1〇具有抵接凸 的腕部40’因此藉由使凸部20和腕部40抵接的力 -面彈 抵接 17端 ί位突 20被 I造， 被挾 因此 i在燃 卡止 [強化 極力 卡止 i轉方 :以使 即可 :料槽 部20 「式， •17- 1379037 如以上說明，根據本實施形態之燃料泵的安裝構造， 燃料槽1的卡止片17係藉由卡止部45的連結部46之彈 力’而被挾持在燃料泵10的凸緣部13和卡止部45之間 ’因此燃料泵1〇不會鬆動且可以一次操作而容易地安裝 在燃料槽1。關於其他構成及作用效果係與上述第i及第 2實施形態同樣。 此外，本實施形態之變形例係如第1 0圖（a)及（b)所示 ，適當調整卡止片17及卡止部45的大小，將其設置個數 從本實施形態之8個變更爲4個亦可。於該情形下，卡止 片17及卡止部45係以90°間隔配置。 (第4實施形態） 接著，參照第1 1圖（a)及（b)，說明有關本發明所相關 之燃料泵的安裝構造之第4實施形態。此外，本實施形態 之燃料泵的安裝構造中，燃料泵的卡止部形狀和第3實施 形態之燃料泵的安裝構造不同，而關於其他部分則和第 1〜第3實施形態之燃料泵的安裝構造同樣，因此對相同部 分附加相同符號或相等符號，簡略或省略其說明。第11 圖（a)及（b)係本發明所相關之燃料泵的安裝構造之第4實 施形態之說明圖，第11圖（a)爲俯視圖，第11圖（b)爲主 要部分側視圖。 本實施形態中，如第1 1圖（a)所示，燃料泵1 0的本 體部11外周面形成有複數（本實施形態中以90°間隔共 計4個）之卡止部48，卡合泵安裝孔6的卡止片17，該卡 -19- 1379037 止部48具有：在本體部11沿軸方向形成的一對之肋44 、連結一對之肋44上端部彼此且與凸緣部13平行地形成 之連結部46、及形成在連結部46大致中央部且抵接卡止 片17之板簧狀突起部49。且，突起部49係側面視大致 半圓形狀之板簧構件，與連結部46協同動作而當作可彈 性變形之彈性部之功能。 如以上說明，根據本實施形態之燃料泵的安裝構造， 燃料槽1的卡止片17係藉由卡止部48的連結部46及突 起部49之彈力，而被挾持在燃料泵10的凸緣部13和卡 止部48之間，因此燃料泵10不會鬆動且可以一次操作而 容易地安裝在燃料槽1。關於其他構成及作用效果係與上 述第1〜第3實施形態同樣。 (第5實施形態） 接著，參照第12圖（a)及（b)，說明有關本發明所相關 之燃料泵的安裝構造之第5實施形態。此外，本實施形態 之燃料泵的安裝構造中，燃料槽的卡止片及燃料泵的卡止 部之形狀和第3實施形態之燃料泵的安裝構造不同，而關 於其他部分則和第1〜第3實施形態之燃料泵的安裝構造 同樣’因此對相同部分附加相同符號或相等符號，簡略或 省略其說明。第12圖（a)及（b)係本發明所相關之燃料泵的 安裝構造之第5實施形態之說明圖，第12圖（a)爲俯視圖 ，第12圖（b)爲主要部分側視圖》 本實施形態中，如第12圖（a)所示，燃料栗1〇的本 -20- 1379037 體部11外周面形成有複數（本實施形態中以90°間隔共 計4個）之卡止部50，卡合泵安裝孔6的卡止片17，該卡 止部50具有：在本體部11沿軸方向形成的一對之肋44 、連結一對之肋44上端部彼此且與凸緣部13平行地形成 之連結部46、形成在連結部46大致中央部之卡合凹部51 。且，卡合凹部51係側面視大致半圓形狀之板簧構件， 與連結部46協同動作且當作可彈性變形之彈性部之功能 〇 且，本實施形態中，卡止片17大致中央部形成有嵌 合卡合凹部51的卡合凸部52。該卡合凸部52係側面視 大致半圓形狀之板簧構件，當作可彈性變形之彈性部之功 能。 如以上說明，根據本實施形態之燃料泵的安裝構造， 燃料槽1的卡止片17係藉由卡止部50的連結部46及卡 合凹部51和卡止片17的卡合凸部52之彈力，而被挾持 在燃料泵10的凸緣部13和卡止部50之間，因此燃料泵 10不會鬆動且可以一次操作而容易地安裝在燃料槽1。 且’根據本實施形態之燃料泵的安裝構造，卡止片 17在與卡止部50的接觸面具有卡合凸部52，因此在卡止 片17賦予彈性。藉此，例如即使製造時產生不穩定，亦 可藉由卡止片17的彈力而確實地保持燃料泵1〇不鬆動。 再者’根據本實施形態之燃料泵的安裝構造，將燃料 泵1〇安裝在燃料槽1時，卡止片17的卡合凸部52和卡 止部50的卡合凹部51嵌合，因此作業者可得到喀啦感， -21 - 1379037 而可真實感到燃料泵1〇安裝在正確位置。且，卡合凹部 51和卡合凸部52之卡合也具有停止繞轉之功能。關於其 他構成及作用效果係與上述第1~第3實施形態同様。 (第6實施形態） 接著，參照第13圖（a)及（b)，說明有關本發明所相關 之燃料泵的安裝構造之第6實施形態。此外，本實施形態 之燃料泵的安裝構造中，燃料槽的卡止片及燃料泵的卡止 部之形狀和第3實施形態之燃料泵的安裝構造不同，關於 其他部分則和第1~第3實施形態之燃料泵的安裝構造同 様，因此對相同部分附加相同符號或相等符號，簡略或省 略其說明。第13圖（a)及（b)係本發明所相關之燃料泵的安 裝構造之第6實施形態之說明圖，第13圖（a)爲俯視圖， 第13圖（b)爲主要部分側視圖。 本實施形態中，如第13圖（a)所示，燃料泵1〇的本 體部1 1外周面形成有複數（本實施形態中以9 0 °間隔共 計4個）之卡止部53，卡合泵安裝孔6的卡止片17，該卡 止部53具有：在本體部11沿軸方向形成的一對之肋44 、連結一對之肋44上端部彼此且與凸緣部13平行地形成 之連結部46。且，本實施形態中，卡止片17係沿圓周方 向朝向下方彎曲形成。 如以上說明，根據本實施形態之燃料泵的安裝構造， 燃料槽1的卡止片17係藉由沿圓周方向彎曲形成的卡止 片17之彈力，而被挾持在燃料泵10的凸緣部13和卡止 -22- 1379037 部53之間，因此燃料泵10不會鬆動且可以一次操作而容 易地安裝在燃料槽1。 再者，根據本實施形態之燃料泵的安裝構造，卡止片 17係沿圓周方向彎曲形成，因此在卡止片17賦予彈性。 ' 藉此，例如即使製造時產生不穩定，藉由卡止片17的彈 力仍可確實地保持燃料泵10不鬆動。關於其他構成及作 用效果係與上述第卜第3實施形態同樣。 (第7實施形態） 接著，參照第14圖（a)及（b)及第15圖，說明有關本 發明所相關之燃料泵的安裝構造之第7實施形態。此外， 本實施形態之燃料泵的安裝構造中，燃料槽的卡止片形狀 和第6實施形態之燃料泵的安裝構造不同，而關於其他部 分係與第1〜第3及第6實施形態之燃料泵的安裝構造同 樣’因此對相同部分附加相同符號或相等符號，簡略或省 ® 略其說明。第14圖（a)及（b)係本發明所相關之燃料泵的安 裝構造之第7實施形態之說明圖，第1 4圖（a)爲俯視圖， 第14圖（b)爲主要部分側視圖，第15圖係用於說明卡止 片形狀的泵安裝孔之主要部分剖視圖。 本實施形態中，如第14圖（a)所示，燃料泵1〇的本 • 體部Η外周面以90°間隔設有4個卡止部53，且在泵安1379037 IX. Description of the Invention [Technical Field] The present invention relates to a structure for mounting a fuel pump in a fuel tank of a motorcycle. [Prior Art] In the conventional fuel pump mounting structure, it is known that a base portion in which a step portion is formed in an opening portion of a fuel tank is fixed, and a portion of the fuel portion is fitted to the lid portion of the fuel pump. There is a gap to melt the structure of the guiding member. In the fuel pump mounting structure, after the 0-ring is attached to the stage portion and the fuel pump is housed in the fuel tank, a retainer is inserted in the gap between the base portion and the guide member. In the state between the ring-sealed fuel pump and the fuel tank, the fuel pump is fixed to the fuel tank (for example, refer to Japanese Laid-Open Patent Publication No. Hei. In the fuel pump mounting structure described in Japanese Laid-Open Patent Publication No. 2007-127003, the base portion and the guide member are positioned while being welded to the opening of the fuel tank, and the fuel pump is attached by inserting the fixing member. The number of parts and installation man-hours increased, and manufacturing costs increased. SUMMARY OF THE INVENTION One or more embodiments of the present invention provide a low-cost fuel pump mounting structure that can reduce the number of components and the number of installation steps, and that can be easily installed in one operation without causing the fuel pump to be loose. According to a first aspect of the present invention, in the first aspect, the mounting structure of the fuel pump-5-1379037 includes a pump mounting hole (6) that is mounted on a wall surface of the fuel tank (i) with a fuel pump ( 10): a flange portion (13) is provided in a tubular portion of the fuel pump (10); a locking piece (17) is provided in the pump mounting hole (6); and a locking portion (25, 41, 42, 45, 48, 50, 53, 56) is provided in the cylindrical portion of the fuel pump (1). The fuel is held by holding the aforementioned locking piece (17) between the flange portion (13) and the aforementioned locking portion (25, 41, 42' 45, 48, 50, 53, 5) The pump (10) is locked in the aforementioned fuel tank (1). According to a second aspect of the invention, in the fuel pump mounting structure according to the first aspect, the fuel pump (10) may be attached to the pump mounting hole (6) through a sealing member (33), and the fuel tank (1) may be attached thereto. The pump mounting hole (6) may have a recess (16) recessed from a wall surface of the fuel tank (1), and the sealing member (33) may be installed at a lower stage of the flange portion (13). The portion (24) and the inner peripheral surface of the recessed portion (16) may be provided with a radial gap (S) between the fuel pump (10) and the locking piece (17). The fuel pump (10) may be installed in the fuel tank (1). According to a third aspect, in the fuel pump mounting structure according to the first or second aspect, the locking portions (25, 41, 45, 48, 50) have elastic portions (27, 41, 46' 49, 51). The locking piece (17) is held by the flange portion (13) and the locking portion (25, 41, 45, by the elastic force of the elastic portion (27, 41, 46, 49, 51). 48, 50) is also possible. According to a fourth aspect, in the fuel pump mounting structure according to the first or second aspect, the locking portions (25, 42, 45, 48' 50, 53, 56) have ribs (44) at least under a part thereof. . 1379037 According to a fifth aspect, the mounting structure of the fuel pump according to the first or second aspect, wherein the locking piece (17) has a convex portion (52) in contact with the locking portion (5). According to a sixth aspect, in the mounting structure of the fuel pump according to the first or second aspect, the locking piece (17) may be bent in the circumferential direction. According to a seventh aspect, the mounting structure (17) of the fuel pump according to the first or second aspect described above may be constituted by a plurality of locking pieces (17) having different heights. According to the eighth aspect, in the fuel pump mounting structure according to the first or second aspect, the locking portion (42, 45, 48, 50, 53) may have a positioning protrusion (43) for attaching the card. The stopper piece (17) is held between the flange portion (13) and the locking portion (25, 41, 42, 45, 48, 50, 53) and rotates the fuel pump (10). The locking piece (17) positions the phase of the rotation direction of the fuel pump (10). According to a ninth aspect, in the fuel pump mounting structure according to the first or second aspect, the fuel tank (1) may have a convex portion (20) that protrudes upward, and the fuel pump (1) has the aforementioned The wrist portion (30) in which the convex portion (20) of the fuel tank (1) is engaged or abutted may also be used. According to a tenth aspect, in the fuel pump mounting structure according to the first or second aspect, the flange portion (13) may have an annular sealing surface (54) on the lower surface thereof, and may be attached to the sealing surface. The sealing member (55) of (54) may seal between the flange portion (5 5) and the wall surface of the fuel tank (1). According to a third aspect, in the fuel pump mounting structure according to the first or second aspect described above, an annular bead (19) 1379037 may be formed around the pump mounting hole (6). . According to the twelfth aspect, in the attachment structure (56) of the fuel pump according to the first or second aspect, the locking portion (56) is moved in the radial direction by operating the operation portion (58) provided on the upper portion of the fuel pump (10). Also. According to the first aspect, the pump attachment hole is provided with a plurality of locking pieces, and the cylindrical portion of the fuel pump is provided with the locking portion for holding the locking piece to the flange portion so that the fuel pump is locked to the locking portion of the fuel tank. The fuel pump is inserted into the pump mounting hole so as not to be in contact with the locking piece on the fuel tank side and the locking portion on the fuel pump side, and is rotated by the flange portion of the fuel pump. The locking portion is held, so that the fuel pump is not loosened and can be easily installed in the fuel tank by one operation. Moreover, since the number of parts and the number of installation man-hours can be reduced, a low-cost fuel pump mounting structure can be provided. According to the second aspect, the fuel tank has a lower concave portion around the pump mounting hole than the fuel tank wall surface, and a sealing member is attached between the step portion of the flange portion and the inner peripheral surface of the recess portion, and the fuel pump and the lock are provided. In the state where a fuel pump is installed in the fuel tank, the fuel pump and the fuel tank are sealed by a sealing member, and the pump mounting hole center and the fuel pump center are positioned. . Moreover, a gap is formed between the fuel pump and the pump mounting hole to prevent the fuel pump and the pump mounting hole from drying out. According to the third aspect described above, at least a part of the locking portion has the elastic portion. The locking piece is held between the flange portion and the flange portion by the elastic force of the elastic portion. Therefore, for example, even if it is unstable during manufacturing, the elastic portion can be used. The elasticity of the vehicle is sure to keep and fix the fuel pump so that it does not loosen. According to the above fourth aspect, the locking portion is formed by at least a part of the lower surface of the -8 - 1379037 rib ‘ so that the strength of the locking portion is strengthened. Thereby, for example, even if a large force acts on the fuel pump, the fuel pump can be prevented from deviating from the pump mounting hole as much as possible. According to the fifth aspect described above, since the locking piece has a convex portion on the contact surface with the locking portion, the locking piece is elasticized. Thereby, for example, even if the manufacturing is unstable, the fuel pump can be surely kept loose by the elastic force of the locking piece. According to the sixth aspect described above, the locking piece is formed to be curved in the circumferential direction. Therefore, the locking piece is given elasticity. Therefore, for example, even if the manufacturing is unstable, the fuel pump can be reliably held by the elastic force of the locking piece. According to the seventh aspect, the locking piece is composed of a plurality of locking pieces having different heights. Therefore, the fuel pump is mounted while the locking piece is elastically deformed. Thereby, for example, even if the manufacturing is unstable, the fuel pump can be surely kept from being loosened by the elastic force of the locking piece. According to the eighth aspect, the locking portion has the positioning protrusion that abuts on the locking piece for positioning the phase of the fuel pump in the rotational direction. Therefore, the fuel pump is rotated to the positioning projection without abutting the number of parts. At the locking tab, it can be positioned at a predetermined position and installed securely. According to the ninth aspect, the fuel tank has a convex portion that protrudes upward, and the fuel pump has a wrist portion that engages or abuts against the convex portion, so that the fuel pump can be prevented by the engagement or abutment of the convex portion and the wrist portion. Unnecessary rotation. According to the tenth aspect, the flange portion has an annular sealing surface, and the sealing member provided on the sealing surface seals between the flange portion and the fuel groove wall surface, so that high sealing performance can be obtained. Moreover, the fuel pump can be kept loose without the elastic force of the sealing structure -9-l379〇37. According to the eleventh aspect, the fuel groove is formed with an annular bead around the pump mounting hole, so that the rigidity around the pump mounting hole is increased. Thereby, for example, even if vibration or the like acts on the fuel tank, the fuel pump can be surely held. According to the twelfth aspect, by operating the operation portion provided on the upper portion of the fuel pump, the locking portion can be moved in and out of the radial direction, and since the locking piece is held by the flange portion and the locking portion, it is not necessary to rotate the fuel during installation. The pump can be installed by operating the operating unit. Thereby, even if the installation space is narrow, the fuel pump can be easily installed in the fuel tank. Other features and effects will be apparent from the description of the embodiments and the scope of the appended claims. [Embodiment] Hereinafter, each exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the schema is read by symbol objects. (First Embodiment) First, an embodiment of a mounting structure of a fuel pump according to the present invention will be described with reference to Figs. 1 to 7 . 1 is a side view of a motorcycle to which a fuel pump mounting structure according to the present invention is applied, and FIG. 2 is a perspective view of a fuel tank to which a fuel pump mounting structure according to the present invention is applied, and FIG. 3 is a second view. A side view of a portion of the fuel tank shown in FIG. 4 is a perspective view showing a mounting structure of the fuel pump shown in FIG. 2, and FIG. 5 is a cross-sectional view of the fuel pump, and FIG. 6(a) and (b). Illustrated in the first embodiment of the fuel pump mounting structure according to the invention, Fig. 6(a) is a plan view, and Fig. 6(b) is a main portion side view, and Fig. 7 is a plan view 6 (a) is a cross-sectional view taken along the line AA of the arrow. As shown in Fig. 1, the motorcycle 100 of the present embodiment has a pair of left and right front forks 85 that are fixedly coupled to the head pipe 81 of the main frame 80, and a lower end portion that rotatably supports the front wheel WF. The front fork 85 can be steered by the handle 82, and the front flap 84 covering the upper portion of the front wheel WF is integrally steered with the front fork 85. Further, a front cover 83 is disposed above the front bezel 84, and the front cover 83 and the upper cover 86 together cover the main frame 80. Further, the engine 87, which is an internal combustion engine, is fixedly suspended below the main frame 80. Further, a seat cushion 90 is coupled to the rear of the main frame 80 for supporting the vehicle body cover 88 and the seat cushion 89 seated by the occupant. The rear side of the vehicle is provided with a fuel tank 1 below the seat cushion 89. Further, the rocker arm 91 having the one end shaft mounted on the lower rear portion of the main frame 80 is swayed by the rear bumper 92 connected to the seat cushion frame 90, and the one end shaft can be swung as a rotating shaft, and the other end is swayed. The part will be pivotally supported as the rear wheel WR of the drive wheel. Then, the mounting structure of the fuel pump related to the present invention is applied to the fuel tank. Further, reference numeral 93 in Fig. 1 denotes an air cleaner, a symbol 94 system throttle, a symbol 95 system injector (fuel injection device), and a symbol 96 system fuel tube. In the fuel tank 1 as shown in Fig. 2 and Fig. 3, the upper member 2 and the lower member 3, which are formed by pressing the steel sheet, are formed as a single container in which the peripheral edge portions 4 are welded and joined. Then, the upper j-shaped yak 2 is provided with a grease supply port 5' for opening and closing the oil, and a chest mounting hole 6 for mounting the fuel pump 10, which is disposed around the pump mounting hole 6 and is smaller than the wall surface of the fuel tank 1 by 1379037. A stage portion 24 is formed in the radial direction. Further, the outer peripheral surface of the main body portion 11 is formed with a plurality of locking portions 25 (eight in total at intervals of 45° in the present embodiment), and the locking piece 17 of the pump mounting hole 6 is engaged with the base portion 26 The claw portion 27 is formed to protrude in the radial direction from below the flange portion 13, and the claw portion 27 is an elastic portion that is cantilevered in the circumferential direction from the base portion 26. Further, the claw portion 27 has elasticity and can be bent in the vertical direction. Further, the gap between the lower surface of the flange portion 13 and the upper surface of the claw portion 27 is set to be slightly narrower than the thickness of the locking piece 17 of the chestnut mounting hole 6. The outer peripheral edge of the flange portion 13 is formed with a pair of arm portions 3' that protrude in the radial direction. The front end of the arm portion 30 is formed with a convex portion 20 for engaging the fuel tank 1 when the fuel pump 1 is attached to the pump mounting hole 6. The engagement concave portion 31 having a substantially U-shape in plan view. Further, as shown in Fig. 7, the front end of the wrist portion 30 is formed with an inclined surface 32' so that the thickness of the arm portion 30 is gradually thinned from the side of the engaging recess portion 31 toward the outer side in the circumferential direction, so that the arm portion 30 easily passes over the convex portion. 20. Next, the installation procedure of the fuel pump 10 for the fuel tank 1 will be described. As shown in Fig. 6, first, the annular sealing member 3 3 formed of oil-resistant rubber or the like is attached to the step portion 24 of the fuel pump 1 to tilt the fuel pump.插入 Insert the pump mounting hole 6 from the front end of the filter 12. Then, the phase of the locking portion 25 of the fuel pump 10 and the insertion groove 18 of the pump mounting hole 6 are aligned, and the locking portion 25 is inserted into the groove 8 so that the flange portion 13 is pushed in until the contact is locked. The sheet 17' rotates the fuel pump 10 in the direction of the arrow X. Thereby, the locking piece 17 enters the gap between the flange portion 13 and the locking portion 25, and is held between the flange portion 13 and the locking portion 25 by the elastic force of the claw portion 27 of the locking portion 25. -13- 1379037 When the fuel pump 10 is inserted into the pump mounting hole 6, a gap S is provided between the main body portion 1 1 of the fuel pump 10 and the pump mounting hole 6 (the leading end of the locking piece 17), and the pump can be prevented from being inserted. The fuel pump 10 and the locking piece 17 are dry. Further, the sealing member 33 is elastically deformed between the step portion 24 of the fuel pump 10 and the inner peripheral surface of the recess 16 of the fuel tank 1. Thereby, the fuel tank 1 and the fuel pump 10 are hermetically sealed, and the fuel pump 10 is positioned at the center of the pump mounting hole 6. Further, while the fuel pump 10 is rotated, the pair of wrist portions 30 of the flange portion 13 pass over the pair of convex portions 20, and the engagement concave portion 31 of the arm portion 30 and the convex portion 20 are engaged. Thereby, the fuel pump 10 is positioned and fixed to the fuel tank 1, so that unnecessary rotation of the fuel pump 10 can be prevented. As described above, according to the mounting structure of the fuel pump of the present embodiment, the pump mounting hole 6 is provided with a plurality of locking pieces 17, and the main body portion 11 of the fuel pump 10 is provided with the locking portion 25, which is the locking portion 25 The fuel pump 1 is locked in the fuel tank 1 so as to hold the locking piece 17 with the flange portion 13, and only the locking piece 17 on the fuel tank 1 side and the locking portion 25 on the fuel pump 10 side are not in contact with the fuel pump. In the manner of 10, the fuel pump 10 is inserted into the pump mounting hole 6 and rotated. The locking piece 17 of the fuel tank 1 is held by the flange portion 13 of the fuel pump 1 and the locking portion 25, so that the fuel is supplied. The pump 1〇 is not loose and can be easily installed in the fuel tank 1 in one operation. Further, it is possible to provide a low-cost installation structure of the fuel pump 10 because the number of parts and the number of installation steps can be reduced. Further, according to the mounting structure of the fuel pump of the present embodiment, the fuel tank 1 has the recessed portion 16' formed in the periphery of the flange portion 13 and the inner periphery of the recessed portion 16 in the vicinity of the pump mounting hole 6 in the recess portion 16' which is lower than the wall surface of the fuel tank 1. A sealing member 33 is disposed between the surfaces, and a fuel groove ' is disposed between the fuel pump 1 〇 and the locking piece 17 in the gap S ′ in this state, and the fuel pump 〇 is installed in the fuel tank 1 . Therefore, a gap S is formed between the fuel pump 10 and the pump mounting hole 6, which prevents the fuel pump 10 and the pump mounting hole 6 from being dried when the pump is inserted. Further, the sealing member 33 is elastically deformed between the phase portion 24 of the fuel pump 10 and the inner peripheral surface of the recess 16 of the fuel tank 1, so that the fuel tank 1 and the fuel pump 1 are fluid-tightly sealed, and the fuel pump is 10 is positioned at the center of the pump mounting hole 6. In the mounting structure of the fuel pump according to the present embodiment, the locking portion 25 has the claw portion 27, and the locking piece 丨7' is held between the flange portion 13 by the elastic force of the claw portion 27, and thus, for example, even when manufactured When the instability occurs, the fuel pump can be surely held and fixed by the elastic force of the claw portion 27 without being loosened. According to the fuel pump mounting structure of the present embodiment, the fuel tank 1 has the convex portion 20 that protrudes upward, and the fuel pump 10 has the arm portion 30 that engages the convex portion 20, so that the convex portion 20 and the wrist portion 30 are provided. The manner of engagement prevents the fuel pump 10 from rotating unnecessarily. (Second Embodiment) Next, a second embodiment of the attachment structure of the fuel pump according to the present invention will be described with reference to Figs. 8(a) and 8(b). Further, in the fuel pump mounting structure of the present embodiment, the shape of the pair of wrist portions of the flange portion and the locking portion of the fuel pump are different from those of the fuel pump of the first embodiment, and other portions are different from the first embodiment. In the first embodiment, the same components are denoted by the same reference numerals or the same reference numerals, and the description thereof will be omitted or omitted. Fig. 8(a) and Fig. 8(b) are explanatory views showing a second embodiment of the fuel pump mounting structure -15-1379037 according to the present invention, and Fig. 8(a) is a plan view, Fig. 8(b) Side view for the main part. In the present embodiment, as shown in Fig. 8(a), four first locking portions 41 that are disposed at intervals of 90° are formed on the outer peripheral surface of the body portion 11 of the fuel pump 10 in the radial direction. And four second locking portions 42 that are disposed at intervals of 90 degrees between the first locking portions 41 and 41 (that is, the phase rotated by 45 degrees from the first locking portion 41). φ The first locking portion 41 is formed as a flat cantilever beam and serves as an elastic portion that can be deflected in the up and down direction. The gap between the upper surface of the first locking portion 41 and the lower surface of the flange portion 13 is slightly narrower than the thickness of the locking piece 17 of the pump mounting hole 6. In the one end portion of the second locking portion 42 (the end portion on the counterclockwise direction side in the present embodiment), a positioning projection portion 43' that protrudes upward is formed. When the fuel pump 10 is mounted, the projection portion 43 is attached. Abutting on the end surface of the locking piece 17, the phase of the rotation direction of the fuel pump 1 is positioned. Further, a rib 44 is provided on the lower surface of the second locking portion 42, and the strength of the second locking portion 42 is reinforced. • The flange portion 13 has a pair of plate-like portions 40 that protrude in the radial direction. Further, the fuel tank 1 is formed with a pair of convex portions 20, and when the fuel pump 1 is mounted to the pump mounting hole 6, the pair of convex portions 20 protrude upward at positions where the respective arm portions 40 are on the counterclockwise side. In the fuel pump 10 of the present embodiment, the fuel pump 10 is inserted into the pumping hole after the first locking portion 41 and the second locking portion 42 are aligned with the insertion groove 18 of the pump mounting hole 6. 6 Rotate it in the direction of the arrow X. Thereby, the gap between the insertion of the locking piece 17 into the flange portion 13 and the first locking portion 41 and the second locking portion 42 is held by the flange portion by the elastic force of the first locking portion 41 by 挟-16-1379037. 13 is between the third locking portion 4i. When the fuel pump 10 is rotated, the pair of wrist portions 40 are deformed while being over the convex portion 20, and the pair of the wrist portions 40 and the convex portion 20' are in contact with each other, and the positioning projections 43 of the second locking portion 42 are in contact with each other. In the locking piece • face. Thereby, the rotation of the fuel pump 1 in the direction of the arrow X is blocked by the deposition portion 43, and the rotation in the opposite direction to the arrow is blocked by the convex portion, so that it is surely fixed in the positioning state. As described above, the locking piece 17 of the fuel tank 1 of the fuel pump according to the present embodiment is held by the flange portion 13 of the fuel pump 10 and the first lock by the elastic force of the first locking portion 41. Between the portions 41, the fuel pump 10 is not loosened and can be easily attached to the trough 1 in a single operation. Further, according to the mounting structure of the fuel pump of the present embodiment, the ribs 44 are formed on the lower surface of the second portion 42, and therefore the strength of the second locking portion 42 is secret. Thereby, for example, even if a large force acts on the fuel pump 1, the fuel pump 10 can be prevented from deviating from the pump mounting hole 6. In the mounting structure of the fuel pump according to the present embodiment, the second portion 42 has the positioning projections 4 3 that abut against the locking piece 17 for positioning the rotational phase of the fuel pump 1〇, so that it is not necessary to increase the number of parts. Only the fuel pump 10 is rotated until the positioning projection 43 abuts against the locking piece 17, and is positioned and securely mounted at a predetermined position. Further, according to the attachment structure of the fuel pump of the present embodiment, the fuel 1 has the convex portion 20 that protrudes upward, and the fuel pump 1A has the convex portion 40' that abuts the convex portion 20, so that the convex portion 20 and the wrist portion 40 are brought into contact with each other. The force-surface bomb abuts the 17-end ί position 20 is made by I, so the i is burning. [Enhanced the power to lock the i-turn: so that: the trough part 20", • 17- 1379037 As described above, according to the attachment structure of the fuel pump of the present embodiment, the locking piece 17 of the fuel tank 1 is held by the flange portion 13 of the fuel pump 10 by the elastic force ' of the coupling portion 46 of the locking portion 45. Between the locking portion 45 and the locking portion 45, the fuel pump 1 is not loosened and can be easily attached to the fuel tank 1 in one operation. The other configurations and operational effects are the same as those of the above-described first and second embodiments. In the modification of the embodiment, as shown in Figs. 10(a) and (b), the size of the locking piece 17 and the locking portion 45 is appropriately adjusted, and the number of the locking pieces 17 is changed from 8 to 4 in the present embodiment. In this case, the locking piece 17 and the locking portion 45 are arranged at intervals of 90°. (Fourth embodiment) A fourth embodiment of the fuel pump mounting structure according to the present invention will be described with reference to Fig. 1 (a) and (b). In addition, in the fuel pump mounting structure of the present embodiment, the fuel pump card The shape of the stop is different from that of the fuel pump of the third embodiment, and the other portions are the same as those of the fuel pump of the first to third embodiments. Therefore, the same reference numerals or symbols are attached to the same portions, and 11(a) and (b) are explanatory views of a fourth embodiment of a fuel pump mounting structure according to the present invention, and FIG. 11(a) is a plan view, and FIG. 11(b) is a plan view. In the present embodiment, as shown in Fig. 1 (a), the outer peripheral surface of the main body portion 11 of the fuel pump 10 is formed with a plurality of (four in total in the present embodiment at intervals of 90). The portion 48 is engaged with the locking piece 17 of the pump mounting hole 6, and the locking portion 48 of the card 190-1379037 has a pair of ribs 44 formed in the axial direction of the body portion 11, and upper ends of the ribs 44 connecting the pair of ribs 44 a connecting portion 46 formed in parallel with the flange portion 13 and formed in the joint The substantially central portion abuts against the leaf spring-like projection portion 49 of the locking piece 17. The projection portion 49 is a leaf spring member having a substantially semicircular shape on the side surface, and cooperates with the coupling portion 46 to serve as an elastic portion that can be elastically deformed. As described above, according to the mounting structure of the fuel pump of the present embodiment, the locking piece 17 of the fuel tank 1 is held by the fuel pump by the elastic force of the connecting portion 46 of the locking portion 48 and the protruding portion 49. Since the fuel pump 10 is not loosened and can be easily attached to the fuel tank 1 in one operation, the fuel pump 10 can be easily attached to the fuel tank 1. The other configurations and operational effects are related to the first to third embodiments described above. same. (Fifth Embodiment) Next, a fifth embodiment of a mounting structure of a fuel pump according to the present invention will be described with reference to Figs. 12(a) and (b). Further, in the fuel pump mounting structure of the present embodiment, the shape of the locking portion of the fuel tank and the locking portion of the fuel pump are different from those of the fuel pump of the third embodiment, and the other portions are the first to The mounting structure of the fuel pump according to the third embodiment is the same. Therefore, the same reference numerals are given to the same portions, and the description thereof will be omitted or omitted. Fig. 12 (a) and (b) are explanatory views showing a fifth embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 12 (a) is a plan view and Fig. 12 (b) is a main portion side view. In the present embodiment, as shown in Fig. 12(a), the outer peripheral surface of the body -20-1379037 body portion 11 of the fuel pump 1〇 is formed with a plurality of (four in total in the present embodiment at intervals of 90°). The portion 50 is engaged with the locking piece 17 of the pump mounting hole 6, and the locking portion 50 has a pair of ribs 44 formed in the axial direction of the body portion 11, and upper ends of the pair of ribs 44 are coupled to each other and to the flange The connecting portion 46 formed in parallel with the portion 13 and the engaging recess portion 51 formed at a substantially central portion of the connecting portion 46. Further, the engaging recessed portion 51 is a leaf spring member having a substantially semicircular shape on the side surface, and functions as an elastic portion that can be elastically deformed in cooperation with the connecting portion 46. In the present embodiment, the locking piece 17 is formed substantially at the center portion. The engaging convex portion 52 of the fitting engagement recess 51 is provided. The engaging convex portion 52 is a leaf spring member having a substantially semicircular shape on the side, and functions as an elastic portion that can be elastically deformed. As described above, according to the attachment structure of the fuel pump of the present embodiment, the locking piece 17 of the fuel tank 1 is the coupling portion 46 of the locking portion 50, the engaging recess portion 51, and the engaging convex portion 52 of the locking piece 17 The elastic force is held between the flange portion 13 of the fuel pump 10 and the locking portion 50, so that the fuel pump 10 is not loosened and can be easily attached to the fuel tank 1 in one operation. In the mounting structure of the fuel pump according to the present embodiment, the locking piece 17 has the engaging convex portion 52 at the contact surface with the locking portion 50, so that the locking piece 17 is provided with elasticity. Thereby, for example, even if the manufacturing is unstable, the fuel pump 1 can be surely held by the elastic force of the locking piece 17 without being loosened. In addition, when the fuel pump 1 is attached to the fuel tank 1 according to the attachment structure of the fuel pump of the present embodiment, the engagement convex portion 52 of the locking piece 17 and the engagement concave portion 51 of the locking portion 50 are fitted. The operator can get a sense of click, -21 - 1379037 and can really feel that the fuel pump 1〇 is installed in the correct position. Further, the engagement of the engaging recess 51 and the engaging projection 52 also has a function of stopping the revolving. Other configurations and effects are the same as those of the first to third embodiments described above. (Embodiment 6) Next, a sixth embodiment of a mounting structure of a fuel pump according to the present invention will be described with reference to Figs. 13(a) and (b). Further, in the fuel pump mounting structure of the present embodiment, the shape of the locking portion of the fuel tank and the locking portion of the fuel pump are different from those of the fuel pump of the third embodiment, and the other portions are the first to the first The installation structure of the fuel pump of the embodiment is the same as that of the same, and the same reference numerals are given to the same parts, and the description thereof will be omitted or omitted. Fig. 13 (a) and (b) are explanatory views of a sixth embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 13 (a) is a plan view and Fig. 13 (b) is a main portion side view. . In the present embodiment, as shown in Fig. 13(a), the outer peripheral surface of the main body portion 1 of the fuel pump 1 is formed with a plurality of locking portions 53 (four in total in the present embodiment at intervals of 90°). The locking piece 17 of the pump mounting hole 6 has a pair of ribs 44 formed in the axial direction of the body portion 11, and upper ends of the pair of ribs 44 are parallel to each other and to the flange portion 13 The joint portion 46 is formed. Further, in the present embodiment, the locking piece 17 is formed to be curved downward in the circumferential direction. As described above, according to the mounting structure of the fuel pump of the present embodiment, the locking piece 17 of the fuel tank 1 is held by the flange portion of the fuel pump 10 by the elastic force of the locking piece 17 formed by bending in the circumferential direction. 13 and the lock -22 - 1379037 between the portions 53, so that the fuel pump 10 is not loose and can be easily installed in the fuel tank 1 in one operation. Further, according to the mounting structure of the fuel pump of the present embodiment, since the locking piece 17 is formed to be curved in the circumferential direction, the locking piece 17 is provided with elasticity. Thus, for example, even if the manufacturing is unstable, the elastic force of the locking piece 17 can surely keep the fuel pump 10 from being loose. The other configurations and effects are the same as those of the third embodiment described above. (Seventh Embodiment) Next, a seventh embodiment of a mounting structure of a fuel pump according to the present invention will be described with reference to Figs. 14(a) and (b) and Fig. 15 . Further, in the fuel pump mounting structure of the present embodiment, the shape of the locking piece of the fuel tank is different from that of the fuel pump of the sixth embodiment, and the other portions are the first to third and sixth embodiments. The installation configuration of the fuel pump is also the same 'so the same reference numerals or equal symbols are attached to the same parts, either briefly or omitted. Fig. 14 (a) and (b) are explanatory views showing a seventh embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 14(a) is a plan view, and Fig. 14(b) is a main portion side. Fig. 15 is a cross-sectional view showing the main part of the pump mounting hole for explaining the shape of the locking piece. In the present embodiment, as shown in Fig. 14(a), the outer peripheral surface of the body portion 燃料 of the fuel pump 1 is provided with four locking portions 53 at intervals of 90°, and is in the pump
裝孔6以90°間隔交替地設有2個卡止片17A及2個卡 止片1 7B。然後’如第！ 5圖所示，2個卡止片1 7 A係形 成在比2個卡止片ι7Β更下方，配置成卡止片17A、i7B -23- 1379037 的高度不同。 如以上說明’根據本實施形態之燃料泵的安裝構造， 燃料槽1的卡止片17A、17B係藉由不同高度配置的卡止 片17A、17B的彈力，而被挾持在燃料泵10的凸緣部13 和卡止部53之間’因此燃料泵1〇不會鬆動且可以一次操 作而容易地安裝在燃料槽1。 且’根據本實施形態之燃料泵的安裝構造，卡止片 17A、17B被配置成不同高度，因此藉由將卡止片17A、 17B挾持在燃料泵1〇的凸緣部13和卡止部53之間的方 式’將卡止片17A朝卡止部53上面推壓而朝上方彈性變 形’將卡止片17B朝凸緣部13下面推壓而朝下方彈性變 形。藉此’例如即使製造時產生不穩定，仍可藉由卡止片 17A、17B的彈力，確實地保持燃料泵10不鬆動。關於其 他構成及作用效果係與上述第1〜第3及第6實施形態同 樣。 (第8實施形態） 接著’參照第1 6圖，說明有關本發明所相關之燃料 栗的安裝構造之第8實施形態。此外，本實施形態之燃料 栗的安裝構造中’燃料泵的凸緣部形狀和第1實施形態之 燃料泵的安裝構造不同，關於其他部分則和第1實施形態 之燃料栗的安裝構造同樣，因此對相同部分附加相同符號 或相等符號’簡略或省略其說明。第16圖係用於說明本 發明所相關之燃料泵的安裝構造之第8實施形態之主要部 -24- 1379037 分側視圖。 本實施形態中，如第1 6圖所示，燃料槽1的上側構 件2所相對向的凸緣部13的下面形成有環狀溝54，該環 狀溝54裝設有〇型環等密封構件55。然後，將燃料泵 10安裝在燃料槽1時’密封構件55將凸緣部13和燃料 槽1的上側構件2之間液密地封住。 如以上說明，根據本實施形態之燃料泵的安裝構造， φ 凸緣部13下面具有環狀溝54，且藉由裝設在環狀溝54 的密封構件55，將凸緣部1 3和燃料槽1的壁面之間密封 ’因此將燃料泵10和燃料槽1之間藉由2支密封構件33 ' 55在徑方向及面方向予以雙重密封，因此可獲得高密 封性能。藉此’例如即使相關零件之製作有誤差等，仍可 確實地密封。且’可藉由密封構件55的彈力保持燃料泵 10不鬆動。關於其他構成及作用效果係與上述第1實施 形態同様。 (第9實施形態） 接著’參照第17圖（a)及（b)，說明有關本發明所相關 之燃料泵的安裝構造之第9實施形態。此外，本實施形態 ' 之燃料泵的安裝構造中，燃料泵的卡止部形狀和第1~第8 - 實施形態之燃料泵的安裝構造不同，關於其他部分係與第 1實施形態之燃料泵的安裝構造同樣，因此對相同部分附 加相同符號或相等符號，簡略或省略其說明。第17圖（a) 及（b)係本發明所相關之燃料泵的安裝構造之第9實施形 -25- 1379037 態之說明圖，第1 7圖（a)爲俯視圖，第1 7圖（b)爲主要部 分側視圖。 本實施形態中，如第17圖（a)所示，燃料泵1 0的本 體部11設有4個卡止部56,係藉由旋轉操作設在燃料泵 10上部的操作部58之方式，對本體部11朝徑方向進出 自如。且’卡止部56上面形成有抵接卡止片17的突起部 5Ί。 本實施形態之燃料泵10的安裝程序，係在卡止部56 和泵安裝孔6的卡止片17進行相位對準之後，將燃料泵 10插入泵安裝孔6且操作部58轉動操作。藉此，卡止部 56從本體部11進出而將卡止片17挾持在卡止部56和凸 緣部1 3之間。 如以上說明，根據本實施形態之燃料泵的安裝構造， 卡止部56係藉由操作設在燃料泵10上部的操作部58之 方式而朝徑方向進出自如，由於以凸緣部13和卡止部56 挾持卡止片17，因此安裝時不須使燃料泵1〇旋轉，僅以 操作操作部58即可安裝燃料泵1〇。藉此，在安裝空間狹 窄的情況下，仍可容易地將燃料泵10安裝在燃料槽1。 關於其他構成及作用效果係與上述第1實施形態同樣。 此外，燃料槽1的變形例係如第1 8圖所示，在凹部 16周圍的平面部分將剖面大致逆V字狀的捲邊19形成爲 圓環狀亦可。於該情形下，由於泵安裝孔6周邊的剛性被 提高，例如即使振動等作用在燃料槽1，仍可確實地保持 燃料泵10。 -26- 1379037 已根據特定之實施形態及變更例說明本發明，但業者 應知不超出本發明即可加上各種變更和修正。 本申請係根據2007年10月5日申請的日本專利申請 . (特願20 0 7-262 424)，於此擷取其內容作爲參照。 • 本發明可利用在用於將燃料泵安裝在自動二輪車的燃 料槽之構造。 φ 【圖式簡單說明】 第1圖係適用本發明所相關之燃料泵的安裝構造之自 動二輪車之側視圖。 第2圖係適用本發明所相關之燃料泵的安裝構造之燃 料槽之立體圖。 第3圖係第2圖所示燃料槽的一部分缺口之側視圖。 第4圖係第2圖所示燃料栗的安裝構造之槪略立體圖 〇 Φ 第5圖係燃料泵的剖視圖。 第6圖係本發明所相關之燃料泵的安裝構造的第1實 施形態之說明圖，第6圖（a)爲俯視圖，第6圖（b)爲主要 部分側視圖。 ' 第7圖係第6圖（a)所示之a-a線箭頭方向剖視圖。 • 第8圖係本發明所相關之燃料泵的安裝構造的第2實 施形態之說明圖，第8圖（a)爲俯視圖，第8圖（b)爲主要 部分側視圖。 第9圖係本發明所相關之燃料泵的安裝構造的第3實 -27- 1379037 施形態之說明圖，第9圖（a)爲俯視圖，第9圖（b)爲主要 部分側視圖。 第10圖係第3實施形態之燃料泵的安裝構造的變形 例之說明圖，第10圖（a)爲俯視圖，第10圖（b)爲主要部 分側視圖。 第11圖係本發明所相關之燃料泵的安裝構造的第4 實施形態之說明圖，第1 1圖（a)爲俯視圖·，第1 1圖（b)爲 主要部分側視圖。 第12圖係本發明所相關之燃料泵的安裝構造的第5 實施形態之說明圖，第12圖（a)爲俯視圖，第12圖（b)爲 主要部分側視圖。 第13圖係本發明所相關之燃料泵的安裝構造的第6 實施形態之說明圖，第13圖（a)爲俯視圖，第13圖（b)爲 主要部分側視圖》 第14圖係本發明所相關之燃料泵的安裝構造的第7 實施形態之說明圖，第14圖（a)爲俯視圖，第14圖（b)爲 主要部分側視圖。 第15圖係用於說明卡止片形狀的泵安裝孔的主要部 分剖視圖》 第16圖係用於說明本發明所相關之燃料泵的安裝構 造的第8實施形態之主要部分側視圖。 第〗7圖係本發明所相關之燃料泵的安裝構造的第9 實施形態之說明圖，第17圖（a)爲俯視圖，第17圖（b)爲 主要部分側視圖》 -28- 1379037 第 【主要 1 ： 2 ： 3 : 4 ：The fitting holes 6 are alternately provided with two locking pieces 17A and two locking pieces 17B at intervals of 90°. Then’ as the first! As shown in Fig. 5, the two locking pieces 1 7 A are formed below the two locking pieces ι7 ,, and the heights of the locking pieces 17A, i7B -23 - 1379037 are different. As described above, the mounting structure of the fuel pump according to the present embodiment is such that the locking pieces 17A and 17B of the fuel tank 1 are held by the convexity of the fuel pump 10 by the elastic force of the locking pieces 17A and 17B arranged at different heights. Between the edge portion 13 and the locking portion 53 'The fuel pump 1 is therefore not loosened and can be easily installed in the fuel tank 1 in one operation. In the mounting structure of the fuel pump according to the present embodiment, the locking pieces 17A and 17B are disposed at different heights, so that the locking pieces 17A and 17B are held by the flange portion 13 and the locking portion of the fuel pump 1A. The method of 'between the locking piece 17A against the upper surface of the locking portion 53 and elastically deforming upwards' pushes the locking piece 17B toward the lower surface of the flange portion 13 to be elastically deformed downward. By this, for example, even if the manufacturing is unstable, the fuel pump 10 can be surely kept from being loosened by the elastic force of the locking pieces 17A, 17B. Other configurations and effects are the same as those of the first to third and sixth embodiments described above. (Eighth Embodiment) Next, an eighth embodiment of the attachment structure of the fuel pump according to the present invention will be described with reference to Fig. 16. In the attachment structure of the fuel pump of the present embodiment, the shape of the flange portion of the fuel pump is different from that of the fuel pump of the first embodiment, and the other portions are the same as the attachment structure of the fuel pump of the first embodiment. Therefore, the same reference numerals are given to the same parts or the same symbols are simply or omitted. Fig. 16 is a side elevational view showing the main portion of the eighth embodiment of the fuel pump mounting structure according to the present invention, in the range of -24 to 1379037. In the present embodiment, as shown in Fig. 16, an annular groove 54 is formed on the lower surface of the flange portion 13 facing the upper member 2 of the fuel tank 1, and the annular groove 54 is provided with a seal such as a ring-shaped ring. Member 55. Then, when the fuel pump 10 is mounted in the fuel tank 1, the sealing member 55 hermetically seals the flange portion 13 and the upper member 2 of the fuel tank 1. As described above, according to the attachment structure of the fuel pump of the present embodiment, the φ flange portion 13 has the annular groove 54 on the lower surface thereof, and the flange portion 13 and the fuel are provided by the sealing member 55 provided in the annular groove 54. The wall surface of the tank 1 is sealed. Therefore, the fuel pump 10 and the fuel tank 1 are double-sealed in the radial direction and the surface direction by the two seal members 33' 55, so that high sealing performance can be obtained. By this, for example, even if there is an error in the production of the related parts, the sealing can be surely performed. And the fuel pump 10 can be kept loose by the elastic force of the sealing member 55. Other configurations and operational effects are the same as those of the first embodiment described above. (Ninth Embodiment) Next, a ninth embodiment of a mounting structure of a fuel pump according to the present invention will be described with reference to Figs. 17(a) and (b). In the fuel pump mounting structure of the present embodiment, the shape of the locking portion of the fuel pump is different from the mounting structure of the fuel pump according to the first to eighth embodiments, and the other portion is the fuel pump of the first embodiment. The same construction is attached, and the same reference numerals are given to the same parts, and the description thereof will be omitted or omitted. Fig. 17 (a) and (b) are explanatory views of a ninth embodiment of the mounting structure of the fuel pump according to the present invention, in the form of a second embodiment, and Fig. 17 (a) is a plan view, Fig. 17 ( b) is the side view of the main part. In the present embodiment, as shown in Fig. 17 (a), the main body portion 11 of the fuel pump 10 is provided with four locking portions 56, and is operated by a rotary operation of the operation portion 58 provided on the upper portion of the fuel pump 10. The main body portion 11 is freely accessible in the radial direction. Further, a projection portion 5A that abuts against the locking piece 17 is formed on the upper surface of the locking portion 56. In the mounting procedure of the fuel pump 10 of the present embodiment, after the locking portion 56 and the locking piece 17 of the pump mounting hole 6 are phase-aligned, the fuel pump 10 is inserted into the pump mounting hole 6 and the operating portion 58 is rotated. Thereby, the locking portion 56 comes in and out from the main body portion 11 to hold the locking piece 17 between the locking portion 56 and the flange portion 13. As described above, according to the attachment structure of the fuel pump of the present embodiment, the locking portion 56 is moved in the radial direction by operating the operation portion 58 provided on the upper portion of the fuel pump 10, and the flange portion 13 and the card are used. Since the stopper portion 56 holds the locking piece 17, the fuel pump 1 is not required to be rotated, and the fuel pump 1 can be attached only by operating the operation portion 58. Thereby, the fuel pump 10 can be easily mounted to the fuel tank 1 in the case where the installation space is narrow. Other configurations and operational effects are the same as those of the first embodiment described above. Further, as a modification of the fuel tank 1, as shown in Fig. 18, the bead 19 having a substantially V-shaped cross section may be formed in an annular shape in a plane portion around the concave portion 16. In this case, since the rigidity around the pump mounting hole 6 is increased, for example, even if vibration or the like acts on the fuel tank 1, the fuel pump 10 can be surely held. -26- 1379037 The present invention has been described in terms of specific embodiments and modifications, but it should be understood that various changes and modifications may be added without departing from the invention. The present application is based on a Japanese patent application filed on Oct. 5, 2007, the disclosure of which is hereby incorporated by reference. • The present invention can be utilized in a configuration for mounting a fuel pump to a fuel tank of a motorcycle. φ [Simplified description of the drawings] Fig. 1 is a side view of a motorcycle in which the fuel pump mounting structure according to the present invention is applied. Fig. 2 is a perspective view of a fuel tank to which the fuel pump mounting structure of the present invention is applied. Fig. 3 is a side view showing a part of the notch of the fuel tank shown in Fig. 2. Fig. 4 is a schematic perspective view showing the mounting structure of the fuel pump shown in Fig. 2 Φ Fig. 5 is a cross-sectional view of the fuel pump. Fig. 6 is an explanatory view showing a first embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 6(a) is a plan view and Fig. 6(b) is a side view of a main portion. Fig. 7 is a cross-sectional view taken along the line a-a of Fig. 6(a). Fig. 8 is an explanatory view showing a second embodiment of the fuel pump mounting structure according to the present invention, wherein Fig. 8(a) is a plan view and Fig. 8(b) is a side view of a main portion. Fig. 9 is an explanatory view of a third embodiment of the fuel pump mounting structure according to the present invention, wherein Fig. 9(a) is a plan view and Fig. 9(b) is a side view of a main portion. Fig. 10 is an explanatory view showing a modification of the mounting structure of the fuel pump according to the third embodiment, Fig. 10(a) is a plan view, and Fig. 10(b) is a main portion side view. Fig. 11 is an explanatory view showing a fourth embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 1(a) is a plan view, and Fig. 1(b) is a side view of a main portion. Fig. 12 is an explanatory view showing a fifth embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 12(a) is a plan view and Fig. 12(b) is a side view of a main portion. Fig. 13 is an explanatory view showing a sixth embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 13(a) is a plan view, and Fig. 13(b) is a main portion side view. Fig. 14 is a view of the present invention. Fig. 14(a) is a plan view and Fig. 14(b) is a side view showing a main portion of the fuel cell mounting structure according to the seventh embodiment. Fig. 15 is a cross-sectional view showing a main portion of a pump mounting hole for explaining a shape of a locking piece. Fig. 16 is a side view showing a main portion of an eighth embodiment for explaining a mounting structure of a fuel pump according to the present invention. Fig. 7 is an explanatory view showing a ninth embodiment of a fuel pump mounting structure according to the present invention, wherein Fig. 17(a) is a plan view, and Fig. 17(b) is a main portion side view -28-1379037. [Main 1: 2 : 3 : 4 :
6 ： 10 11 12 13 16 176 : 10 11 12 13 16 17
19 20 2 4 25 26 27 30 3 1 18圖係用於說明燃料槽的變形例之立體圖。 元件符號說明】 燃料槽 上側構件 下側構件 周緣部 給油口 泵安裝孔 :燃料泵 :本體部 :過瀘器 :凸緣部 :凹部 :卡止片 :插入溝 =捲邊 :凸部 :階段部 :卡止部 :基部 :爪部（彈性部） =腕部 :卡合凹部 -29- 1379037 3 2 :傾斜面 3 3 :密封構件 41 :第1卡止部（彈性部） ' 42 :第2卡止部 • 4 3 :定位突起部 44 :肋 45 :卡止部 φ 46 :連結部（彈性部） 47 :突起部 48 :卡止部 49 :突起部（彈性部） 50 :卡止部 5 1 :卡合凹部（彈性部） 52 :卡合凸部（彈性部） 53 :卡止部 # 54 :環狀溝（密封面） 5 5 :密封構件 5 6 :卡合部 57 :突起部 ' 5 8 :操作部 -30-19 20 2 4 25 26 27 30 3 1 18 is a perspective view for explaining a modification of the fuel tank. Component symbol description] Fuel tank upper side member lower side member peripheral portion oil supply pump mounting hole: Fuel pump: Main body: filter: flange part: recessed part: locking piece: insertion groove = curling: convex part: stage part : locking portion: base: claw (elastic portion) = wrist: engaging recess -29 - 1379037 3 2 : inclined surface 3 3 : sealing member 41 : first locking portion (elastic portion) ' 42 : 2 Locking portion • 4 3 : positioning projection portion 44 : rib 45 : locking portion φ 46 : coupling portion (elastic portion) 47 : projection portion 48 : locking portion 49 : projection portion (elastic portion) 50 : locking portion 5 1 : Engagement concave portion (elastic portion) 52 : Engagement convex portion (elastic portion) 53 : Engagement portion # 54 : Annular groove (sealing surface) 5 5 : Sealing member 5 6 : Engagement portion 57 : Protrusion portion ' 5 8 : Operation Department -30-