201241300 六、發明說明： 【發明所屬之技術領域】 本發明係關於保持於二輪車等之燃料槽之開口部且 用以將燃料送出至燃料槽外之燃料供應裝置。 【先前技術】 習知之燃料供應裝置係具備果部與凸緣部，該栗部係 具備：以樹脂材料藉由模製覆蓋由經捲繞線圈（⑺⑴之磁 性體所構成之邮㈣叙定子部；旋轉自如地配置於鐵 怒的内周侧，且當朝線圈通電時，會承受形成於似、的磁 場而旋轉之轉子部^定於轉子之旋轉轴的葉輪；旋轉自 如地收容葉輪之泵外殼；及以其外周侧保持栗外殼，並且 結合於定子部的歧；該凸緣部係保持定子部，並以覆蓋 a又置於各器之開口部的方式固定於容器，藉此將燃料系固 疋於谷器，定子部係具備將旋轉自如地與旋轉軸的一端側 搬合並^以支#之軸料以保持之軸祕持部，且該轴承 保持部係藉由模製㈣成，凸緣部係於模製定子部時與定 子部一體形成’並於泵外殼的吸入口裝設吸入過濾器（例如 參照專利文獻1)。 此外’有一種燃料供應裝置，係以金屬外殼覆蓋泵部 之外周，且藉由覆蓋又子鐵芯（stat〇rcore)之外周的樹脂 模具將金屬外殼予以一體成型者。（例如參照專利文獻2) (先前技術文獻） (專利文獻） (專利文獻1)日本特開2009-222055號公報 323707 3 201241300 (專利文獻2)日本特開2007-104871號公報 【發明内容】 (發明所欲解決之課題） 習知之燃料供應裝置係如同以上之構成，馬達部與泵 部雖藉由樹脂模具等-體成型，惟馬達部衫部的相容性 不^圭而欲進躲部的重組作業時，會有必須機械性破壞樹 脂模具而難以再組裝之問題。 = '因馬達部與栗部係藉由模具成型一體化或藉由 堅入4而嵌合’故會有難以確保馬達部財部之接合部分 的密封性之問題。 本發明係為了解決前述绿題而研創者，其目的在於提 供-種燃料供應裝置’不須機械性破壞樹脂模具，即能重 組泵部並能確保密封性。 (解決課題之手段） 本發明之燃料供絲置係由馬達部、料及凸緣部所 料掷2透過送㈣將前述燃料槽内的燃料送出至前述燃 ^ ，其中，該馬達部係由藉由控制流動於捲繞於定 子鐵芯之線圈的電流而切換在前述^子鐵芯之内周面形成 於圓周方向的磁極之定子部、及旋轉自如地設置在該定子 鐵芯之内周並將在旋轉方向彼此不同的磁極形成於盘前述 定子鐵怒相對向之外周面之轉子部所形成；該_藉由 卡合於轉子部錢轉驅動之㈣構件將燃料吸人並予以升 壓，該凸緣部餘m卩以及前述馬達料以料，並且 以覆蓋設置於祕槽之開口部的方式固定於前述燃料槽； 323707 4 201241300 -該=供應裝置係為具備：外殼，係藉由樹脂模具形成， •且-端連結至前述凸緣部，以收容保持前述馬達部，並且 :於馬達部的下部具有前料部的收納部；栗部保持手段， '係裝設於前述外殼，並將前述栗部彼插於前述外殼之收納 =予以保持；及密封構件，係在將前㈣部歲插於前述 外设之收納部時，將前述外殼與前述系部之間進行密封. ^述外殼與前親部保持手段設置―可將兩者拆201241300 6. TECHNOLOGICAL FIELD OF THE INVENTION The present invention relates to a fuel supply device for holding an opening of a fuel tank of a two-wheeled vehicle or the like and for delivering fuel to the outside of the fuel tank. [Prior Art] A conventional fuel supply device includes a fruit portion and a flange portion, and the pump portion is provided with a resin material which is covered by a wound coil (the magnetic body formed by the winding coil ((7) (1)) The impeller is disposed on the inner peripheral side of the iron anger, and when it is energized toward the coil, it receives an impeller that is formed in a rotating magnetic field and rotates on the rotor shaft of the rotor; and the pump that rotatably accommodates the impeller a casing; and a periphery of the outer peripheral side of the chestnut casing and coupled to the stator portion; the flange portion holds the stator portion and is fixed to the container in such a manner that the cover a is placed at the opening of each of the devices, thereby fueling The stator is fixed to the arranging device, and the stator portion is provided with a shaft holding portion that is rotatably coupled to one end side of the rotating shaft to hold the shaft material, and the bearing holding portion is molded (four) The flange portion is integrally formed with the stator portion when the mold portion is formed, and a suction filter is attached to the suction port of the pump casing (see, for example, Patent Document 1). Further, there is a fuel supply device which is covered with a metal casing. Outside the pump And the metal casing is integrally molded by a resin mold covering the periphery of the ferrule core (for example, refer to Patent Document 2) (Prior Art Document) (Patent Document) (Patent Document 1) Japanese Laid-Open Patent Publication No. 2007-104871 (Patent Document 2) JP-A-2007-104871 SUMMARY OF INVENTION Technical Problem A conventional fuel supply device has the above configuration, a motor portion and a pump portion. Although it is molded by a resin mold or the like, the compatibility of the motor portion of the motor portion is not satisfactory, and there is a problem that it is necessary to mechanically damage the resin mold and it is difficult to reassemble. The motor portion and the chestnut portion are integrally molded by a mold or fitted by a stiffener 4, so that it is difficult to ensure the sealing property of the joint portion of the motor portion. The present invention is intended to solve the aforementioned problem. The purpose of the present invention is to provide a fuel supply device that can reassemble the pump mold without mechanical damage, and can ensure the sealing performance. The motor portion, the material, and the flange portion of the material are thrown and sent to the fuel in the fuel tank, wherein the motor portion is controlled by a current flowing through a coil wound around the stator core. a stator portion that switches a magnetic pole formed in a circumferential direction on an inner circumferential surface of the iron core, and a magnetic pole that is rotatably provided on an inner circumference of the stator core and that is different from each other in a rotation direction is formed on the disk Formed with respect to the rotor portion of the outer peripheral surface; the fuel is sucked and boosted by the member of the (four) member that is engaged with the rotor portion, and the flange portion is the same as the motor material, and The fuel tank is fixed to the opening provided in the secret groove; 323707 4 201241300 - the supply device includes an outer casing formed by a resin mold, and the end is coupled to the flange portion to Storing and holding the motor portion, and having a storage portion for the front material portion at a lower portion of the motor portion; the chestnut holding means is mounted on the outer casing, and the chest portion is inserted into the outer casing to be held; A sealing member, based upon the age of the front portion (iv) inserted in the peripheral portion of the housing, the housing and the line between the sealing portion and said housing front affinity ^ holding means is provided - both of which may be removed
地裝設之卡合部’並藉由前述泵部保持手段將前述 泵部可拆裝地予以保持。 J (發明之效果） 根據本發明之燃料供應裝置，藉由將栗部可拆裝地保 持於馬達部’不須機械性破壞樹脂模具，即能得到可重組 泵部的燃料供應裝置。 、本發明之前述或其他的目的、特徵、效果，皆能藉由 从下的實施形態之詳細說日纽及圖式記載而明瞭。 【實施方式】 以下，參照圖式詳細說明本發明之實施形態。再者， 各圖式中之相同付號係為表示相同或相應之部分者。 (實施形態1) 第1圖係為本發明實施形態1之燃料供應裝置的縱刹 面圖，第2圖係為本發明實施形態i之燃料供應裝置的分 解斜視圖，第3圖係為第丨圖之主要部位放大圖。 首先’使用圖式’就關於本發明實施形態1之燃料供 應裝置100之構成進行說明。於第丨圖至第3圖中，燃料 323707 5 201241300 供應裝置100,係例如於自動二輪車中吊設於儲存燃料1 之燃料槽2的開口部2a，且由泵部30、屬於泵部30之驅 動源的馬達部40、及作為安裝至燃料槽2之安裝構件的凸 緣部50所構成。 泵部30係於泵基底3以及泵蓋4收容屬於旋轉構件 之葉輪（impeller)5而構成（參照第3圖），且本發明實施 形態1之燃料供應裝置100的泵之形式，係所謂之渦輪泵 (turbine pump) ° 形成為圓盤狀的葉輪5係以藉由泵基底3及泵蓋4從 其表裏兩面側夾持的方式收容，且中心部卡合於後述之轉 子部10的軸件10a，並藉由固定於泵蓋4之中心部分的軸 承6支撐而旋轉自如地形成。 泵基底3與泵蓋4係例如藉由由圓筒狀之金屬管所構 成之泵外殼7來覆蓋外周面，且於泵蓋4之燃料槽2側（第 1圖之下方側），配設有吸入該燃料槽2内之燃料1的吸入 口 4a，於該吸入口 4a裝設有用以過濾燃料1中之垃圾的 吸入過遽器8。 於泵基底3及录蓋4之與葉輪5相對向的面，分別形 成有C字狀的泵流路30a，且燃料槽2内之燃料1係在以 結合於泵蓋4之吸入過濾器8過濾之後，從吸入口 4a流 入，且藉由葉輪5的旋轉而一面流動於泵流路30a内一面 升壓，並泵送至馬達部40側。 從泵部30泵送至馬達部40側的燃料，係通過後述之 定子鐵芯部9與轉子部10之間，並透過後述之形成於凸緣 323707 6 201241300 部50之連絡通路i4f，供應至燃料通路i4d。 馬達部係採用無刷馬達（brushless motor)，且由 定子部9以及轉子部1 〇所構成，該定子部9係由以磁性體 所構成之定子鐵芯9a與捲繞於該定子鐵芯9a之線圈9b 所構成，該轉子部10係藉由成型為圓筒狀之塑膠磁鐵 (plastic magnet)及嵌插於中心之轴件i〇a所構成。 定子部9係藉由控制流動於捲繞於定子鐵芯ga之線 圈9b的電流’切換在定子鐵芯9a之内周面形成於圓周方 向的磁極。 轉子部10係藉由軸承6旋轉自如地支撐軸件i〇a，並 旋轉自如地設置在定子鐵芯9a之内周，且以將在旋轉方向 彼此不同的磁極形成於與定子鐵芯9a相對向之外周面側 之方式磁化。 此外’定子鐵芯9a係以朝軸方向積層之複數片磁性 鋼片固定而形成，且以覆蓋其表面的方式於定子鐵芯％ 設置有由絕緣材質所構成之絕緣體（insulator)9c，在絕緣 體9c之周圍捲繞有線圈9b ’由未圖式之控制裝置對線圈 9b供應二相交流電流，並以朝圓周方向產生旋轉磁場的方 式進行例如星形連接’並連接至後述之3個負載端子13&、 13b、13c。 由定子鐵芯9a、線圈9b所構成之定子部9，以及電 性連接至線圈9b的負載端子13a、13b、13c，係例如藉由 以聚縮醛（polyacetal)樹脂等熱可塑性樹脂所形成之外气 (housing)ll ’ 一體性插入（insert)而成型，藉由充填樹月旨 323707 7 201241300 材料’燃料不會直接接觸於線圈9b，即使使用劣化燃料或 低質燃料，亦能防止線圈9b的腐蝕。 在外设11設置有供泵3嵌插並予以收納之收納部 11a、及用以將泵部3〇保持於外周面而配設之卡合凸部 lib，泵部30係在收納於收納部Ua之後，藉由將配設於 以聚縮齡樹脂等熱可塑性樹脂所形成的屬於泵部保持手段 之果支架12的卡合凹部12a，嵌合（如第2圖之箭號所示） 於外殼11之卡合凸部lib，而使泵部30保持於馬達部40。 再者’將卡合凸部lib係以大致120度節距（pitch) 配置於馬達部4〇之外殼丨丨的外周面，而卡合凹部i2a係 以大致120度節距配設於泵支架12之内周，將兩者嵌合而 形成所謂之卡扣（snap fit)構造’拆裝容易並且能確實地 保持。 此外’在卡合凸部lib與泵部30之間插入有用以維 持油密性之屬於密封構件的0環19,0環19係收納於形成 於外殼11之收納部11a的底部之凹溝llal，並將泵部3〇 抵接於〇環19而使其密封。 ★凸緣部50係由送出管14a及凸緣Η等構成，該送出 吕14a係透過未圖示之燃料配管而將加壓燃料送出至引擎 (未圖不）；該凸緣14係為將收納有用以供應電力至線圈 肋之後述的電源端子Ha、17b、17c之屬於電力供應手段 :、接。卩14b，以例如pps樹脂、或pom樹脂等熱可塑性 樹脂材1成型者；凸緣14係形成為與軸方向（第i圖之 上下方向）正交之平板狀，並嵌插於燃料槽2之圓形的開口 323707 201241300 部2a，且在將墊圈（packing)17 &裝於平板部與燃料槽2 之外側表面之間而密著的狀態下，以未圖示之固〜 緊固，藉此固定於燃料槽2〇 疋 " 於凸緣14的中央部形成有使以後述的送出過淚器18 所過濾之燃料，連通至燃料通路14d之連絡通路。 在燃料通路14d的中途配置有止回闕15。止 u 係由閥體15a、閥座15b及閥彈簧15c所構成，菩 係使用螺旋彈簧（cqU spring)，在止回閥15之_ 下成為壓縮狀態。閥體15a係藉由彈簧15c的彈 於閥座15b ’並於燃料供應裝4 1〇〇之運轉中 於 體15a之朝向燃料祕i4d的下游侧（第i圖'# 向的力’係藉由從泵部30送出之燃料壓力克 =二吏閥體15a從閥座15b離開，且她^ 梦由二:：於::供應裝置1〇0之停止中’因閥體15a 藉由彈w 15c之彈力而抵接於閥座脱，故燃料通路⑽ 被止回閥15所阻斷。因此，較止回間❿更靠近下游側之 燃料通路及連接於送之未圖示以料配 官内的燃料’係並未透過燃料供應U ι〇〇回到姆料槽2, 而就此停留原位，且亦保持經加壓<_壓力。窃 因此，於下次引擎啟動時，煥 擎，而能迅速地啟動引擎。“、、#會直接被供應至引 :者:於較止回閥15更靠近下游側之 的中途，係於燃料槽2的方向（第1圖中的下方向）配置有 323707 201241300 調壓閥16。 調壓閥16係由閥體16a、閥座16b以及彈簧16c所構 成。彈簧16c係於此時使用螺旋彈簧，且於調壓閥16之安 裝狀態下成為壓縮狀態。調壓閥16係為將由燃料供應裝置 100送出之燃料壓力調整為期望壓力者。在此，所謂期望 壓力係為由引擎側所要求之燃料壓力。於調壓閥16中，係 根據因燃料壓力而作用於閥體16a之力與彈簧16c之彈力 的大小關係，來決定閥體16a與閥座16b的抵接/分離狀態。 亦即，在燃料通路14d内之燃料壓力為期望壓力以下 時’閥體16a會抵接於閥座16b，使調壓閥16關閉。在燃 料通路14d内之样料壓力超過期望壓力時，閥體16a會離 開閥座16b而使調壓閥16關閉，燃料通路14d内之一部分 燃料會透過調壓閥16回到燃料槽2内、亦即回到低壓區 域，藉此，燃料通路14d内之燃料壓力會維持於期望壓力。 於調壓閥16之燃料槽2側之外殼，係於對應於調壓閥16 的位置設置有貫通孔14e，由調壓閥16排出之燃料係通過 該屬於該回歸口的貫通孔14e而回到燃料槽2内。 此外，於凸緣部50之凸緣14，延伸設置有形成為可 與外殼11之外殼側結合部11c結合的凸緣侧結合部14g ’ 在藉由經加熱之熱板將凸緣側結合部14g與外殼侧結合部 Uc之端面予以加熱後，將外殼11與凸緣14朝第1圖之 上下方向夾壓而溶接結合。 此外，於凸緣侧結合部14g的外周，配設有在凸緣側 結合部14g結合於外殼側結合部11c時，會電性連接於負 323707 10 201241300 載端子13a、13b、13c的電源端子17a、17b、17c。 此外，於凸緣側結合部14g之内部’配設有將送出至 • 燃料槽2外之燃料1予以過濾之送出過濾器18。送出過濾 ： 器18係為形成為菊花形筒狀或捲（roll)狀之濾材，並相對 於轉子部10之圓筒形狀配置為同心圓狀，且流經定子鐵芯 9a與轉子部10之間的燃料，係相對於送出過濾器18而往 箭號A、箭號B、箭號C、及箭號D流動，惟因燃料係相對 於送出過濾器18之圓圓周方向均勻地流入，故會有使壓力 損失變小的效果。 此外’於送出過滤器18之大致中心部配設有連絡通 路14f，且轉子部10、送出過濾器18、及連絡通路係 直線地形成，故燃料會順暢地通過，且壓力損失會變小， 濾材係使用不織布，過濾性能相對於網狀過濾器較佳。 接著，說明以上構成之燃料供應裝置1〇〇的動作。 從連接部14b經由電源端子na、nb、17c、及負載 螭子13a、13b、13c而從未圖示之控制電路將驅動電流供 應至線圈9b ,並於定子部9之與轉子部1〇相對向之對向 面產生旋轉磁場。 人: 卩9之旋轉磁場而旋轉，^ P玫子1G之抽件此的葉輪5亦旋轉，並在C字形 1二=内產生旋轉流。燃料槽2内之燃料1係㈣ 而從設置料蓋4的吸人D4a流入，且藉法 ==轉而一面流動於栗流路30a内而一面升壓1 送至馬達部40側（第1圖令之栗部30的上方）。 323707 201241300 經泵送至馬達40侧的燃料1係通過定子鐵芯9a與轉 子部10之間，並經由燃料過濾器18流入至形成於凸緣部 50的聯絡通路l4f，且進一步供應至燃料通路I4d。流入 燃料通路14d的燃料係在調壓閥Μ被調壓為期望壓力，而 從送出管14a送出至未圖示之車輛引擎等之内燃機關。 於燃力供應裝置1 〇〇之停止中，下游侧之燃料通路14d 内以及連接於送出管14a之未圖示燃料配管内的燃料，係 藉由止回閥15之作用而保持在經加壓之燃料壓力。 如上所述’根據本發明之實施形態1的燃料供應裝 置’因將收納有泵部30之收納部1 la配設於外殼11，並 藉由屬於系部保持手段之泵支架12將泵部30保持於馬達 部40 ’且外殼丨1與泵支架12係以拆裝自如的卡扣構造卡 合’故無須機械性破壞樹脂模具，即能進行泵部30的重組 作業。 此外’由於係為卡扣構造，因此拆裝容易，且形成為 屬於卡合手段之卡合凸部 11 b與卡合凹部12a係以大致 120度節距配設成内周狀而嵌合，故泵部30會確實地被保 持於馬達部4〇。 實施形態2 接著械*本發明實施形態2之燃料供應裝置200的構成 進行說明。 Λ ^ _係'為本發明實施形態2的燃料供應裝置之縱剖 面圖第5圖係為本發明實施形態2之燃料供應裝置的分 解斜視圖。 323707 12 201241300 再者， ’僅將與第1圖以及第2 其他之構成係與實施形態 再者’於第4圖及第5圖中 圖不同之構件附加符號來表示， 1相同。 於第4圖及第5圖中，本發明實施形態2的燃料供應 裝置係為於泵支架一體形成有將由燃料槽内吸入之燃料 予以過濾之吸入過濾器，而做成為泵部者。 。根據本實施形態2之燃料供應裝置，藉由將吸入過渡 器與栗支架—體化，相較於將吸人mm架分別裝 設之情況，不但組裝性會提升，並且有降低成本之效果。 實施形態3 第6圖係為本發明實施形態3之燃料供應裝置的泵部 之放大别面圖，且對與實施形態1之第3圖不同之構件重 新附加符號來表示’關於其他構成係與實施形態1相同。 於前述實施形態1之燃料供應裝置中，泵基底3與泵 蓋4係例如藉由以圓筒狀之金屬管所構成之泵外殼7來覆 蓋外周面而固定，惟於本實施形態3中，如第6圖所示， 係為在使泵基底21與泵蓋22夾持之狀態下，嵌插屬於鎖 緊手段之自攻螺絲或盲鉚釘（blind rivet)23,並予以一體 地固定者。 再者，亦可於泵基底21或泵蓋22進行母螺紋之攻牙 (tapping)，並使用盤頭螺釘將泵基底21與泵蓋22予以一 體地固定。 此外，外殼11與泵部30之間的密封係於實施形態1 中，在形成於外殼11之收納部11a的底部之凹溝Hal收 323707 13 201241300 納有0環19 ’惟於實施形態3中，在形成於外殼11之開 口部的凹溝lla2收納屬於密封構件之〇環19，並使泵蓋 22之周緣部22a抵接於0壞19而進行密封。 d ' 如上所述，根據本發明之實施形態3的構成，由於藉 由泛用的鎖緊手段將泵基底21與泵蓋22 —體地固定，因 而減低成本’又因為屬於密封構件之〇環19配設在形成於 外殼11之開口部的凹溝lla2 ’且使〇環19確實地收納於 凹溝lla2 ’故具有可靠性高且組裝性佳之效果。 實施形態4 接著’就本發明之實施形態4的燃料供應裝置30〇之 構成進行說明。第7圖係為本發明實施形態4之燃料供應 裝置的縱剖面圖’第8圖係為本發明實施形態4之燃料供 應裝置的分解斜視圖，第9圖係為第7圖之主要部位放大 圖。 如第7圖至第9圖所示，本實施形態4之燃料供應襞 置中’果基底3與泵蓋4係例如藉由以圓筒狀之金屬管所 構成之屬於系'部保持手段的泵外殼700來覆蓋外周面，泵 外殼700之嵌插部係嵌插於外殼110，並且在突出設置於 外殼110之卡合凸部110b卡合有配設於泵外殼700之卡合 凹部700a ’藉此，構成為將泵基底3與泵蓋4保持於馬達 部40。 根據以上之方式構成之實施形態4的燃料供應裝置， 因以金屬形成I外殼700，故較實施形態1中以樹脂形成 之系支架的尺寸精確度佳，並具有能更確實地將泵外殼3 323707 14 201241300 及泵蓋4予以保持之效果。 【圖式簡單說明】 第1圖係為本發明實施形態1之燃料供應裝置的縱剖 面圖。 第2圖係為本發明實施形態1之燃料供應裝置的分解 斜視圖。 第3圖係為第1圖之主要部位放大圖。 第4圖係為本發明實施形態2之燃料供應裝置的縱剖 面圖。 第5圖係為本發明實施形態2之燃料供應裝置的分解 斜視圖。 第6圖係為本發明實施形態3之泵部的放大剖面圖。 第7圖係為本發明實施形態4之燃料供應裝置的縱剖 面圖。 第8圖係為本發明實施形態4之燃料供應裝置的分解 斜視圖。 第9圖係為第7圖之主要部位放大圖。 【主要元件符號說明】 1 燃料 2 燃料槽 2a 開口部 3 ' 21 果基底 4、22 泵蓋 4a 吸入口 5 葉輪 6 軸承 7、700 泵外殼 8 吸入過遽器 9 定子部 9a 定子鐵芯 323707 15 201241300 9b 10 η、 llal 11c 12a、 14 14b 14e 14g 15a、 15c、 17 18 22a 30、 40The engaging portion of the floor is attached and the pump portion is detachably held by the pump portion holding means. J (Effect of the Invention) According to the fuel supply device of the present invention, the fuel supply device of the reconfigurable pump portion can be obtained by detachably holding the pump portion to the motor portion without mechanically damaging the resin mold. The above and other objects, features, and advantages of the present invention will be apparent from the description of the appended claims. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same payouts in the drawings are the same or corresponding parts. (Embodiment 1) FIG. 1 is a longitudinal side view of a fuel supply apparatus according to Embodiment 1 of the present invention, and FIG. 2 is an exploded perspective view of a fuel supply apparatus according to Embodiment 1 of the present invention, and FIG. 3 is a Enlarged view of the main part of the map. First, the configuration of the fuel supply device 100 according to the first embodiment of the present invention will be described with reference to the drawings. In the third to third figures, the fuel supply 323707 5 201241300 is supplied to the opening 2a of the fuel tank 2 in which the fuel 1 is stored, for example, in the motorcycle, and belongs to the pump unit 30 and belongs to the pump unit 30. The motor unit 40 of the drive source and the flange portion 50 as a mounting member attached to the fuel tank 2 are configured. The pump unit 30 is configured such that the pump base 3 and the pump cover 4 accommodate an impeller 5 belonging to a rotating member (see FIG. 3), and the pump of the fuel supply device 100 according to the first embodiment of the present invention is in the form of a pump. Turbine pump ° The impeller 5 formed in a disk shape is housed so as to be sandwiched between the front and back sides of the pump base 3 and the pump cover 4, and the center portion is engaged with the shaft of the rotor portion 10 to be described later. The piece 10a is rotatably formed by being supported by a bearing 6 fixed to a central portion of the pump cover 4. The pump base 3 and the pump cover 4 are covered by, for example, a pump casing 7 made of a cylindrical metal pipe, and are disposed on the fuel tank 2 side (the lower side of the first drawing) of the pump cover 4 A suction port 4a for sucking the fuel 1 in the fuel tank 2 is provided, and a suction porter 8 for filtering the waste in the fuel 1 is installed in the suction port 4a. A C-shaped pump flow path 30a is formed on the surface of the pump base 3 and the cover 4 opposite to the impeller 5, and the fuel 1 in the fuel tank 2 is attached to the suction filter 8 coupled to the pump cover 4. After the filtration, the pressure is introduced from the suction port 4a, and the inside of the pump flow path 30a is pressurized by the rotation of the impeller 5, and is pumped to the motor unit 40 side. The fuel pumped from the pump unit 30 to the motor unit 40 is supplied between the stator core portion 9 and the rotor portion 10, which will be described later, through a contact passage i4f formed in the flange 323707 6 201241300 portion 50, which will be described later, to the fuel. Fuel passage i4d. The motor portion is a brushless motor, and is composed of a stator portion 9 and a rotor portion 1 which is a stator core 9a made of a magnetic material and wound around the stator core 9a. The coil portion 9b is composed of a plastic magnet molded into a cylindrical shape and a shaft member i〇a inserted in the center. The stator portion 9 is switched between the magnetic poles formed in the circumferential direction on the inner circumferential surface of the stator core 9a by controlling the current flowing in the coil 9b wound around the stator core ga. The rotor portion 10 rotatably supports the shaft member i〇a by the bearing 6, and is rotatably provided on the inner circumference of the stator core 9a, and is formed to face the stator core 9a with magnetic poles different from each other in the rotational direction. Magnetized to the outer peripheral side. Further, the stator core 9a is formed by fixing a plurality of magnetic steel sheets stacked in the axial direction, and an insulator 9c made of an insulating material is provided on the stator core % so as to cover the surface thereof, in the insulator. A coil 9b is wound around 9c. A two-phase alternating current is supplied to the coil 9b by a control device of a non-pattern, and a rotating magnetic field is generated in a circumferential direction, for example, a star connection 'and connected to three load terminals to be described later. 13&, 13b, 13c. The stator portion 9 composed of the stator core 9a and the coil 9b, and the load terminals 13a, 13b, and 13c electrically connected to the coil 9b are formed, for example, by a thermoplastic resin such as polyacetal resin. The housing ll 'integrated insert is molded, and by filling the tree 323707 7 201241300 material 'the fuel does not directly contact the coil 9b, even if the deteriorated fuel or the low-quality fuel is used, the coil 9b can be prevented. corrosion. The peripheral portion 11 is provided with a housing portion 11a into which the pump 3 is inserted and housed, and an engaging convex portion 11b for holding the pump portion 3A on the outer circumferential surface, and the pump portion 30 is housed in the housing portion Ua. After that, the engagement concave portion 12a of the fruit holder 12 belonging to the pump portion holding means formed of a thermoplastic resin such as a poly-age resin is fitted (as indicated by an arrow in FIG. 2) to the outer casing. The engaging portion lib of the 11 is engaged with the pump portion 30 and held by the motor portion 40. Further, 'the engagement convex portion lib is disposed on the outer circumferential surface of the outer casing 马达 of the motor portion 4 at a pitch of approximately 120 degrees, and the engagement concave portion i2a is disposed on the pump bracket at a pitch of approximately 120 degrees. In the inner circumference of 12, the two are fitted to each other to form a so-called snap fit structure, which is easy to assemble and disassemble and can be reliably held. Further, 'the O-ring 19 belonging to the sealing member for maintaining the oil-tightness is inserted between the engaging convex portion lib and the pump portion 30, and the O-ring 19 is housed in the groove llal formed at the bottom of the accommodating portion 11a of the casing 11. And the pump portion 3 is abutted against the annulus 19 to seal it. ★ The flange portion 50 is composed of a delivery tube 14a, a flange Η, and the like, and the delivery illuminator 14a transmits pressurized fuel to an engine (not shown) through a fuel pipe (not shown); The power supply means Ha, 17b, and 17c, which are used to supply electric power to the coil ribs, are included in the power supply means: The crucible 14b is formed of a thermoplastic resin material 1 such as pps resin or pom resin; the flange 14 is formed in a flat shape orthogonal to the axial direction (the upper and lower directions of the i-th image), and is inserted into the fuel tank 2 In the state in which the packing 17 & 17 and the sealing member 17 & are attached between the flat plate portion and the outer surface of the fuel tank 2, the circular opening 323707 is tightened by a fixing and not shown in the figure. Thereby, the fuel tank 2 is fixed to the center portion of the flange 14 to form a communication passage for communicating the fuel filtered by the throat device 18 to be described later to the fuel passage 14d. A check valve 15 is disposed in the middle of the fuel passage 14d. The valve body 15a, the valve seat 15b, and the valve spring 15c are formed by a valve spring 15c, and a coil spring (cqU spring) is used to be in a compressed state under the check valve 15. The valve body 15a is slid by the spring 15c to the valve seat 15b' and is in the operation of the fuel supply device 4 1 于 in the downstream side of the body 15a toward the fuel tip i4d (the force of the i-th view ##向) The fuel pressure sent from the pump unit 30 = the second valve body 15a is separated from the valve seat 15b, and her dream is from the second:: at: the stop of the supply device 1〇0 'by the valve body 15a by the b The spring force of 15c abuts against the valve seat, so the fuel passage (10) is blocked by the check valve 15. Therefore, the fuel passage is closer to the downstream side than the return passage, and is connected to the feed. The fuel inside does not pass through the fuel supply U ι〇〇 back to the mound tank 2, but stays in place and remains pressurized <_pressure. Therefore, at the next engine start, the engine The engine can be started quickly. ", , # will be directly supplied to the lead: in the middle of the downstream side of the check valve 15, in the direction of the fuel tank 2 (the lower direction in Fig. 1) The 323707 201241300 pressure regulating valve 16 is disposed. The pressure regulating valve 16 is composed of a valve body 16a, a valve seat 16b, and a spring 16c. The spring 16c is used at this time. The spring is in a compressed state in the mounted state of the pressure regulating valve 16. The pressure regulating valve 16 is configured to adjust the fuel pressure sent from the fuel supply device 100 to a desired pressure. Here, the desired pressure is required by the engine side. In the pressure regulating valve 16, the abutment/separation state of the valve body 16a and the valve seat 16b is determined based on the magnitude relationship between the force acting on the valve body 16a due to the fuel pressure and the spring force of the spring 16c. That is, when the fuel pressure in the fuel passage 14d is below the desired pressure, the valve body 16a abuts against the valve seat 16b, and the pressure regulating valve 16 is closed. When the sample pressure in the fuel passage 14d exceeds the desired pressure, the valve body 16a will leave the valve seat 16b and close the pressure regulating valve 16, and a part of the fuel in the fuel passage 14d will pass through the pressure regulating valve 16 and return to the fuel tank 2, that is, return to the low pressure region, whereby the fuel in the fuel passage 14d The pressure is maintained at the desired pressure. The outer casing of the pressure regulating valve 16 on the side of the fuel tank 2 is provided with a through hole 14e at a position corresponding to the pressure regulating valve 16, and the fuel discharged from the pressure regulating valve 16 passes through the regression. Through hole 14e Further, in the fuel tank 2, a flange side joint portion 14g' formed to be coupled to the outer casing side joint portion 11c of the outer casing 11 is formed on the flange 14 of the flange portion 50, by being heated by a hot plate After the flange-side joint portion 14g and the end surface of the outer casing-side joint portion Uc are heated, the outer casing 11 and the flange 14 are nip-bonded in the up-down direction of the first drawing, and are joined together. Further, on the outer circumference of the flange-side joint portion 14g, When the flange side joint portion 14g is coupled to the outer casing side joint portion 11c, the power supply terminals 17a, 17b, and 17c that are electrically connected to the negative 323707 10 201241300 load terminals 13a, 13b, and 13c are disposed. Further, a delivery filter 18 for filtering the fuel 1 sent out to the outside of the fuel tank 2 is disposed inside the flange side joint portion 14g. The filter 18 is a filter material formed in a daisy-shaped tubular shape or a roll shape, and is arranged concentrically with respect to the cylindrical shape of the rotor portion 10, and flows through the stator core 9a and the rotor portion 10 The fuel flows between the arrow A, the arrow B, the arrow C, and the arrow D with respect to the delivery filter 18, but since the fuel is uniformly flowed in the circumferential direction of the delivery filter 18, There is an effect of reducing the pressure loss. Further, the contact passage 14f is disposed substantially at the center of the delivery filter 18, and the rotor portion 10, the delivery filter 18, and the communication passage are formed linearly, so that the fuel smoothly passes and the pressure loss is reduced. The filter material is a non-woven fabric, and the filtration performance is better than that of the mesh filter. Next, the operation of the fuel supply device 1A configured as above will be described. The drive current is supplied from the connection portion 14b to the coil 9b from the control circuit (not shown) via the power supply terminals na, nb, 17c and the load clamps 13a, 13b, 13c, and is opposite to the rotor portion 1 of the stator portion 9. A rotating magnetic field is generated to the opposite surface. Person: Rotating the magnetic field of 卩9 and rotating, the impeller 5 of the pumping piece 1G also rotates, and generates a swirling flow in the C-shape 1==. The fuel 1 in the fuel tank 2 is supplied to the motor unit 40 side by the suction D4a of the installation cover 4, and flows into the pump flow path 30a while passing the method ==. Above the chestnut 30 of the order). 323707 201241300 The fuel 1 pumped to the motor 40 side passes between the stator core 9a and the rotor portion 10, and flows into the communication passage l4f formed in the flange portion 50 via the fuel filter 18, and is further supplied to the fuel passage. I4d. The fuel that has flowed into the fuel passage 14d is regulated to a desired pressure by the pressure regulating valve, and is sent from the delivery pipe 14a to an internal combustion engine such as a vehicle engine (not shown). During the stop of the fuel supply device 1 , the fuel in the downstream side fuel passage 14d and the fuel in the unillustrated fuel pipe connected to the delivery pipe 14a are maintained under pressure by the action of the check valve 15. Fuel pressure. As described above, the fuel supply device according to the first embodiment of the present invention has the storage unit 1 la that houses the pump unit 30 disposed in the outer casing 11 and the pump unit 30 by the pump holder 12 belonging to the system holding means. The motor unit 40' is held by the motor unit 40', and the outer casing 丨1 and the pump holder 12 are engaged with the detachable snap structure. Therefore, the resin unit 30 can be reassembled without mechanically damaging the resin mold. In addition, since it is a snap-fit structure, it is easy to attach and detach, and the engagement convex part 11b and the engagement recessed part 12a which are formed by the engagement means are arrange|positioned in the inner circumference shape substantially at the 120-degree pitch, and it is fitting. Therefore, the pump unit 30 is surely held by the motor unit 4〇. (Embodiment 2) Next, the configuration of the fuel supply device 200 according to the second embodiment of the present invention will be described. Fig. 5 is a perspective view showing a fuel supply device according to a second embodiment of the present invention. 323707 12 201241300 In addition, the components which are different from the first and second other components and the embodiments in the fourth and fifth embodiments are denoted by the same reference numerals, and the same is true. In the fuel supply device according to the second embodiment of the present invention, the pump holder is integrally formed with a suction filter for filtering the fuel sucked in the fuel tank, and is used as a pump unit. . According to the fuel supply device of the second embodiment, by integrating the suction transition device and the chestnut holder, the assembly is improved as compared with the case where the suction frame is separately mounted, and the cost is reduced. (Embodiment 3) Fig. 6 is an enlarged plan view showing a pump unit of a fuel supply device according to a third embodiment of the present invention, and a component different from the third embodiment of the first embodiment is denoted by a symbol to indicate 'about other components and Embodiment 1 is the same. In the fuel supply device according to the first embodiment, the pump base 3 and the pump cover 4 are fixed by, for example, covering the outer peripheral surface by a pump casing 7 formed of a cylindrical metal pipe. However, in the third embodiment, As shown in Fig. 6, in a state in which the pump base 21 and the pump cover 22 are sandwiched, a self-tapping screw or a blind rivet 23 belonging to the locking means is inserted and integrally fixed. Further, tapping of the female thread may be performed on the pump base 21 or the pump cover 22, and the pump base 21 and the pump cover 22 may be integrally fixed by using a pan head screw. Further, the seal between the outer casing 11 and the pump portion 30 is in the first embodiment, and the groove Hal formed in the bottom portion of the accommodating portion 11a of the outer casing 11 receives 323707 13 201241300 and has a 0 ring 19' only in the third embodiment. In the groove 11a2 formed in the opening of the casing 11, the ring 19 belonging to the sealing member is housed, and the peripheral edge portion 22a of the pump cover 22 is brought into contact with the zero defect 19 to be sealed. d' As described above, according to the configuration of the third embodiment of the present invention, since the pump base 21 and the pump cover 22 are integrally fixed by the general-purpose locking means, the cost is reduced, and the ring is a sealing member. The 19 is disposed in the groove 11a' formed in the opening of the casing 11, and the annulus 19 is reliably accommodated in the groove 11a2', so that the reliability is high and the assembling property is good. (Fourth embodiment) Next, a configuration of a fuel supply device 30 according to a fourth embodiment of the present invention will be described. Fig. 7 is a longitudinal sectional view of a fuel supply device according to a fourth embodiment of the present invention. Fig. 8 is an exploded perspective view of the fuel supply device according to the fourth embodiment of the present invention, and Fig. 9 is an enlarged view of a main portion of Fig. 7. Figure. As shown in Figs. 7 to 9, in the fuel supply device of the fourth embodiment, the fruit base 3 and the pump cover 4 are constituted by a cylindrical metal pipe, for example, belonging to the system. The pump casing 700 covers the outer peripheral surface, and the insert portion of the pump casing 700 is inserted into the outer casing 110, and the engaging recess portion 110b protruding from the outer casing 110 engages with the engaging recess portion 700a disposed in the pump casing 700. Thereby, the pump base 3 and the pump cover 4 are hold|maintained in the motor part 40. According to the fuel supply device of the fourth embodiment configured as described above, since the I outer casing 700 is formed of metal, the dimensional stability of the stent formed of the resin in the first embodiment is better, and the pump casing 3 can be more surely provided. 323707 14 201241300 and the pump cover 4 to maintain the effect. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing a fuel supply device according to a first embodiment of the present invention. Fig. 2 is an exploded perspective view showing the fuel supply device according to the first embodiment of the present invention. Fig. 3 is an enlarged view of a main part of Fig. 1. Fig. 4 is a longitudinal sectional view showing a fuel supply device according to a second embodiment of the present invention. Fig. 5 is an exploded perspective view showing the fuel supply device according to the second embodiment of the present invention. Fig. 6 is an enlarged cross-sectional view showing a pump unit according to a third embodiment of the present invention. Figure 7 is a longitudinal sectional view showing a fuel supply device according to a fourth embodiment of the present invention. Fig. 8 is an exploded perspective view showing the fuel supply device of the fourth embodiment of the present invention. Fig. 9 is an enlarged view of a main part of Fig. 7. [Description of main components] 1 Fuel 2 Fuel tank 2a Opening 3 ' 21 Base 4, 22 Pump cover 4a Suction port 5 Impeller 6 Bearing 7, 700 Pump housing 8 Suction filter 9 Stator part 9a Stator core 323707 15 201241300 9b 10 η, llal 11c 12a, 14 14b 14e 14g 15a, 15c, 17 18 22a 30, 40
100、 A、B 線圈 9c 絕緣體 轉子部 10a 軸件 110外殼 11a 收納部 、lla2 凹溝 lib、 110b 卡合凸 外殼侧結合部 12 泵支架 ‘ 700a 卡合凹部 13a、 13b、13c 負 凸緣 14a 送出管 連接部 14d 燃料通路 貫通孔 14f 連絡通路 凸緣侧結合部 15 止回閥 > 16a 閥體 15b、 16b 閥座 > 16c 彈簧 16 調壓閩 墊圈 17a、 17b、17c 1 送出過濾器 19 0環 周緣部 23 盲鉚釘 70 泵部 30a 泵流路 馬達部 50 凸緣部 200、300 燃料供應裝置 、C、D 箭號 323707 16100, A, B coil 9c Insulator rotor portion 10a Shaft member 110 Housing 11a Storage portion, 11a2 Groove lib, 110b Engaged convex housing side joint portion 12 Pump holder '700a Engagement recess 13a, 13b, 13c Negative flange 14a Pipe connection portion 14d Fuel passage through hole 14f Contact passage flange side joint portion 15 Check valve > 16a Valve body 15b, 16b Valve seat > 16c Spring 16 Pressure regulating washers 17a, 17b, 17c 1 Feeding filter 19 0 Ring peripheral portion 23 blind rivet 70 pump portion 30a pump flow path motor portion 50 flange portion 200, 300 fuel supply device, C, D arrow 323707 16