201238798 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種被保持在車輛之貯存燃料之燃料 箱之開口部且用以將燃料箱内之燃料送出至燃料箱外部的 燃料供給裝置。 【先前技術】 習知之燃料供給裝置係被保持在車輛之貯存燃料之 燃料箱之開口部且用以將燃料箱内之燃料送出至燃料箱外 部，而在燃料箱内之燃料的剩餘量減少時，亦必須穩定地 供給燃料。 在該燃料供給裝置中，具有收容有將燃料送出至燃料 箱内之燃料泵的副箱，該副箱係與安裝在燃料箱之蓋構件 結合，且以可朝蓋構件之軸方向往復移動之方式形成。 因此，不論燃料箱之容積的變化為何，副箱皆被推壓 至燃料箱内底面，即使燃料箱内之燃料的剩餘量減少時， 亦可進行穩定的燃料供給。 此外，蓋構件與副箱係由棒狀之支持構件所支持，支 持構件之副箱侧的端部係成為自由端，副箱係由支持構件 所導引而可自由地朝預定方向移動，另一方面，支持構件 之蓋構件侧的端部係固定在蓋構件（例如參照專利文獻1 之第2圖）。 (專利文獻1)日本特開2004-316517號公報 【發明内容】 (發明所欲解決之課題） 3 323080 201238798 • 在上述習知之燃料供給裝置中，固定 件係以樹脂成型品所形成，當搭载有 持構件之蓋構 發生撞擊時等，由於燃料箱内的燃料移動:、：=:輛 過大之應力，且施加至固定在蓋構件 t對4相施加 部，而使保持部破損。 t持構件的保持 結果，會有以下問題：發生貫通蓋構 造成燃料箱内之燃料洩漏。 。艮，至 本發明係為了要解決上述課題而研 提供-種在對副箱施加過大之應力時，不合發：：的ΐ於 件之裂痕之可靠性高的燃料供給裝置。9 通盍構 (解決课題之手段） 料箱燃料供給裝置係安裝在燃料箱，且將前述燃 置之特前述燃料箱之外部者，該燃料供給裝 部；5|11〜、備.蓋構件’覆蓋形成在前述燃料箱之開口 燃二二及細料箱内’且收容用以送出從前述 S1,„.之别述燃料的燃料泵；支持構件，在使前述 在前述搬!^述蓋構件可朝其軸方向往復移動之狀態下， 蓋構4箱内支持前述副箱；及保持構件，形成在前述 之嵌插部且ϊ有供前述支持構件之前述蓋構件側端部嵌插 σ ，則述保持構件之前述嵌插部係具有在對前述副 =加預定以上之應力時破損之脆弱部。 (發明之效果） 箱之rn發明之燃料供給裝置，由於在保持用以支持副 ' γ之保持構件的嵌插部設置脆弱部，因此吁獲 4 323080 i：! 201238798 得-種在：副箱施加預定以上之應 不會發生貫通蓋構件之穿、麻土 丨會破彳貝，而 【實施方式】 ^之可祕尚的燃料供給裝置。 (實施形態1) 以下，依據第1圖至第3圖說明本發明之實 在各圖中，對同-或相去椹I μ 月之實施升八態1。 人邪田構件、部位標記 其說明。第1圖係顯示在燁 彳唬並^略 之_料供认f置之曲# .、，、钭相女裝有本發明實施形態i 之燃枓供…裝置之狀態的側視圖 施形態1之燃料供給裝置之_ 〜、不本發明實 明實施形態1之燃料供〜裝 ，3圖係顯示本發 剖視圖。 供4置之主要部分的主要部分放大 在第1圖中，燃料供給裝置咖之 如熱可塑性樹脂所構成，且構牛10係由例 所槿#，以/成為圓板狀之模塑成型品 所構成，且以覆絲成在燃料箱i之開 在燃料箱1之上壁。 刃万式女裝 燃料供給裝置100之叢椹杜1n , 燃料箱Μ。 之盍構件10以外的零件係收容在 在第2圖中’在蓋構件1Q配設有用以將從後述之燃 抖泵18送出之燃料供給至燃料箱丨外部之管的送出管 12、及將電力供給至燃料泵18之電氣連接H 13，從電氣 連接器13至燃料泵18A,!·，、击， 18為止連接有引線14,從電源透過 乳連接器13而輪入之電力係經㈣線14供給至燃料泵 18 ° 在第2圖及第3财，蓋構件1()係具備有支持構件 323080 5 201238798 16’該支持構件16之蓋構件1〇側之一方端16a係嵌p 例如一體形成之保持構件1 1之嵌插部1 1 1，且另一山 後述之副箱15卡合且支持該副箱15。 端與 此外，保持構件11之嵌插部111係朝燃料箱i之內 側方向與蓋構件1G相隔預定尺寸而^置。亦即， 15側突出之狀態下設置。 』矛目 在支持構件16嵌插有作為彈壓構件之彈簀I?， 該彈簧17以彼此分離之方式彈壓蓋構件1〇與副箱a 此蓋構件10與副箱15係可朝蓋構件1〇之轴方向、亦即^ 1圖之上下方向往復移動。 因此，即使收容有燃料供給裝i 1〇〇之樹脂製的燃料 箱1因溫度變化所致之内壓變化或燃料量變化而膨服或收 縮，亦會藉由彈簧17的彈壓力使副箱15之副箱底部i5a 恆常地被推壓至燃料箱1之燃料箱底部la内壁。 在副箱15 1欠容有：吸入燃料箱i内之燃料並且吸入、 送出副箱15内之燃料之燃料泵18、過濾燃料泵18所吸入 之燃料的吸入過渡器19、及過濾燃料泉18所送出之燃料 的送出過濾器20。 ' 燃料栗18係在第2圖中將燃料吸入侧作為下方側並 以縱置之=式收容在副箱15内，且在内部收容有未圖示之 馬達部’猎由與馬達-同旋轉之未圖示之葉輪而吸入副箱 15内之燃料並予以加壓。 由燃料泵18加壓之燃料係在以送出過滤器2〇去除異 物後’送出至壓力調節器2卜送出至壓力調節器21之燃 323080 6 201238798 料係調整為預定壓力，並經由蛇腹管以供給至送出管12。 並且，燃料箱1内之燃料係從送出管12供給至燃料箱1 之外部。 ' 吸入過濾器19係與燃料泵18之燃料吸入口連接，以 去除包含在燃料泵18從副箱15吸入之燃料的較大之異物。 將燃料供給至副箱15内之喷射泵23係安裝在副箱15 之外側’並藉由吸引壓將燃料箱！内之燃料供給至副箱15 内，該吸引壓係藉由將從壓力調節器21排出之剩餘燃料朝 ^圖示之吸人口進行喷嘴喷出而產生者。藉此，即使燃料 箱1内的燃料里減少，副箱15内亦會被燃料所充滿。 在田i箱15之外周面配設有燃料計，該燃料計μ係 具有感測H部25、臂部26、及安裝在臂部26之 浮 起部27。 、浮起部27係可在燃料箱丨内之燃料中浮遊，臂部26 ^ 乂感測器部25側之端部為中心轉動。在感測器部25形 、有電阻值不同之複數個導電圖#，臂部26之反浮起侧之 端部=可與感測器部25之導電圖案接觸。 夕&田t遊在燃料箱1内之燃料中的浮起部27因應燃料 餘里而孚起沈下時，臂部26會隨著浮起部27之浮起 垃撫而Γ動。藉此’臂部26與感測11部25之導電圖案的 所拾狀4會變化’而檢測出燃料箱1内之燃料的剩餘量。 測^燃料的剩餘量係作為電氣信號經由未圖示之引 電，連接器13輸出至未圖示之ECU(電子控制裝置）。 接著依據第3圖說明支持構件16及設置在蓋構件 323080 7 201238798 之保持構件11的附近β 保持構件11係形成為例如圓筒狀，在該保持構 之朝副箱15侧突出的端部設置有嵌插部111，該嵌插部 係具有供支持構件16之一方端16a嵌插之收容孔j 嵌插部111係形成圓筒狀。 a。 在敌插有支持構件16之一方端16a且保 16之保持構件U的缝部1U，具有在對副箱 疋以上之應力時破損之脆弱部lllb。圖式中H⑽ 言’脆弱部mb係藉由減插部lu之圓筒狀部的厚度作 成為比保持構件u之圓筒狀部厚度更薄而設置ς 成者。亦即’使嵌插部⑴之剛性比保持構件η之剛性小。 此外，在保持構件11之根部配設有補強部ila。 斤在此，當裝設有燃料供給裝置100之車輛（未圖示） 朝箭頭A所示之車輛行駛方向在行駛中發生碰撞事故時， 由副箱15之慣性力所產生之應力（F)會作用在支持構件 16,該副们5係用以收納以燃料纟18為首之複數個構件。 作用在支持構件16之應力係從支持構件16之一方端i6a 透過嵌插有該支持構件16之一方端16a之嵌插部lu而施 加在保持構件11。 亥應力雖係透過支持構件16而傳達至保持構件11， 但由於在保持構件11之根部配設有補強部11a，因此保持 構件11之根部的強度大而不會因應力而破損，且在屬於嵌 插部111之脆弱部111b的段差部分’亦即朝保持構件之副 箱15側突出之端部與嵌插部U1之脆弱部mb間之根部 8 323080 201238798 B會產生裂痕。 '如上所述，依據本發明實施形態丨之燃料供 ⑽，由於支持副箱15之支持構件16係在保持該 16之保持構件u設置脆弱部1Ub，因此當對副μ R > 預疋以上之應力時脆弱部lllb之根部不 ^•加 生貫通蓋構件1〇之裂痕，燃料们内之燃料亦會發 此，可獲得可靠性高之之燃料供給裝置。 因 (實施形態2) 依據第4圖及第5圖說明本發明之實施形 =圖中:_-或相當構件、部位標記同—符^以= 第4圖係顯tf本發明實施形態2之燃料供給裝 ° 分的主要部分放大剖視圖。第5圖係從下方向、=部 實施形態2之燃料供給裝置之主要部分的圖。覜看本發明 在上述之實_態丨中，係說明在㈣有支 之-方端16a且保持該支持構件16之保持構件 2 部111設置段差而構成脆弱部⑴卜亦即脆弱部 藉由將嵌插部U1之圓筒狀部的厚度作成為比保_#11 之圓筒狀部厚度更薄而設置段差所構成者， ^中，亦可在嵌插有支持構件16之一方端此且f呆= 持構件16之保持構件11的嵌插部111之_ 15 _ 部，形成例如開縫11101、_而構成之脆弱部。⑽ 此外開縫lllcl係顯示相對於車輛行驶方向朝 直角方向配設之情形，開縫Ulc2係 卢 方向朝大致相同方向配抓产 a ' 仃駛 -己Λ之隋形。因备裝設有燃料供給装 323080 9 .201238798 置100之車輛朝箭頭A所示之車輛行駛方向在行駛中發生 碰撞事故時，會在開縫lllcl之根部（；產生裂痕，且車輛 與其他車輛從側面碰撞時，會在開縫lllc2之根部產生裂 痕，因此不會產生貫通蓋構件10之裂痕，燃料箱1内之燃 料亦不洩漏。因此，可獲得可靠性高之之燃料供給裝置。 此外，就開縫而言，雖顯示設置在4個部位之情形，但亦 可設置在多數個部位。 (產業上之可利用性） 本發明係可實現一種不會產生貫通蓋構件之裂痕之 可靠性高的燃料供給襞置。 【圖式簡單說明】 第1圖係顯示在燃料箱安裝有本發明實施形態丨之燃 料供給裝置之狀態的側視圖。 · 第2圖係顯示本發明實施形態丨之燃料供給裝置之縱 側視圖。 第3圖係顯示本發明實施形態1之燃料供給裝置之主 要。卩分的主要部分放大剖視圖。 第4圖係顯示本發明實施形態2之燃料供給裝置之主 要部分的主要部分放大剖視圖。 第5圖係從下方向觀看本發明實施形態2之燃料供給 裝置之主要部分的圖。 【主要元件符號說明】 燃料相 h 燃料箱底部 開口部 10蓋構件 10 323080 201238798 11 保持構件 11a 補強部 12 送出管 13 電氣連接器 14 引線 15 副箱 15a 副箱底部 16 支持構件 16a 支持構件之一方端 17 彈簧 18 燃料泵 19 吸入過遽器 20 送出過濾器 21 壓力調節器 22 蛇腹管 23 喷射泵 24 燃料計 25 感測器部 26 臂部 27 浮起部 100 燃料供給裝置 111 嵌插部 111a 收容孔 111b 脆弱部 lllcl 、lllc2 開缝 B ' C 根部 F 應力 11 323080201238798 SUMMARY OF THE INVENTION [Technical Field] The present invention relates to a fuel supply device for holding an opening of a fuel tank for storing fuel in a vehicle and for delivering fuel in the fuel tank to the outside of the fuel tank. [Prior Art] A conventional fuel supply device is held at an opening of a fuel tank in which a fuel is stored in a vehicle and is used to send fuel in the fuel tank to the outside of the fuel tank, and when the remaining amount of fuel in the fuel tank is reduced It is also necessary to supply fuel steadily. The fuel supply device includes a sub-tank that houses a fuel pump that sends fuel to the fuel tank, and the sub-tank is coupled to a cover member attached to the fuel tank and reciprocally movable in an axial direction of the cover member. The way is formed. Therefore, regardless of the change in the volume of the fuel tank, the sub-tank is pushed to the bottom surface of the fuel tank, and stable fuel supply can be performed even if the remaining amount of fuel in the fuel tank is reduced. Further, the cover member and the sub-tank are supported by a rod-shaped support member, and the end portion of the support member on the sub-tank side is a free end, and the sub-tank is guided by the support member to be freely movable in a predetermined direction, and On the other hand, the end portion on the cover member side of the support member is fixed to the cover member (for example, refer to FIG. 2 of Patent Document 1). (Patent Document 1) Japanese Laid-Open Patent Publication No. 2004-316517 (Claim of the Invention) (Problem to be Solved by the Invention) 3 323080 201238798 In the above-described conventional fuel supply device, the fixing member is formed of a resin molded product, and is mounted When the cover structure of the holding member collides, the fuel moves in the fuel tank:: =: The vehicle is excessively stressed, and is applied to the cover member t to the four-phase application portion to break the holding portion. As a result of holding the member, there is a problem in that a fuel leakage in the fuel tank occurs due to the penetration of the cover. . In order to solve the above-mentioned problems, the present invention provides a fuel supply device which is highly reliable in the case of applying excessive stress to the sub-tank. 9 communication mechanism (means for solving the problem) The tank fuel supply device is installed in the fuel tank, and the fuel is supplied to the outside of the fuel tank, and the fuel supply portion; 5|11~, cover. The member 'covers the fuel pump formed in the opening of the fuel tank and the fine tank, and accommodates a fuel pump for delivering the fuel from the above S1, „., the supporting member, The cover member is reciprocally movable in the axial direction thereof, and the auxiliary box is supported in the cover 4; and the holding member is formed in the insertion portion and the side end portion of the cover member is inserted into the support member In the case of σ, the inserting portion of the holding member has a fragile portion that is broken when the stress is increased by a predetermined amount or more. (Effect of the invention) The fuel supply device of the invention of the box is kept for supporting the auxiliary 'The retaining part of the γ retaining member is provided with a fragile part, so it is called 4 323080 i:! 201238798. In the case where the sub-tank is applied more than a predetermined amount, the through-cover member should not be worn, and the shovel will break the mussel. And [Implementation] ^ A fuel supply device is also provided. (Embodiment 1) Hereinafter, the actual figure of the present invention will be described with reference to Figs. 1 to 3, and the same or - phase 椹I μ month is performed to raise the eight states. The part is marked with a description of the device. The first figure is shown in the state of the 烨彳唬 ^ ^ 略 供 供 置 置 置 # # # # # 女装 女装 女装 女装 女装 女装 女装 女装 女装 女装 女装 女装 女装 女装 女装In the side view, the fuel supply device of the first embodiment is not provided, and the fuel supply and storage according to the first embodiment are not shown in the present invention, and the third embodiment shows a cross-sectional view of the present invention. The main portion of the main portion of the fourth embodiment is enlarged in Fig. 1. The fuel supply device is composed of a thermoplastic resin, and the structure of the cow 10 is composed of a molded product of a circular plate shape, and is covered with a wire in the fuel tank i. The upper wall of the fuel tank 1. The fuel tank 之1 1 , the fuel tank Μ of the blade type fuel supply device 100. The components other than the 盍 member 10 are housed in the cover member 1Q in Fig. 2 The fuel sent from the flare pump 18, which will be described later, is supplied to the delivery pipe 12 of the tube outside the fuel tank, The electric power is supplied to the electrical connection H13 of the fuel pump 18, and the lead wire 14 is connected from the electrical connector 13 to the fuel pump 18A, the ?, ?, 18, and the electric power that is passed through the milk connector 13 from the power source is passed through (4) Supply of line 14 to fuel pump 18 ° In Fig. 2 and Fig. 3, cover member 1 () is provided with support member 323080 5 201238798 16' cover member 1 of the support member 16 is formed on one side of the side end 16a For example, the sub-port 15 of the holding member 1 1 is integrally formed and the sub-tank 15 described later is engaged and supported by the sub-tank 15. The end and the insertion portion 111 of the holding member 11 are directed toward the fuel tank. The inner direction of i is spaced apart from the cover member 1G by a predetermined size. That is, the 15 side is highlighted. The support member 16 is inserted with a magazine I as a biasing member, and the spring 17 elastically presses the cover member 1 and the sub-tank in a manner of being separated from each other. The cover member 10 and the sub-tank 15 are attached to the cover member 1 The axis direction of the crucible, that is, the upper and lower directions of the ^1 map reciprocates. Therefore, even if the fuel tank 1 made of resin containing the fuel supply device i 1 is swollen or contracted due to a change in internal pressure due to a change in temperature or a change in the amount of fuel, the sub tank can be made by the elastic pressure of the spring 17. The sub-tank i5a of the sub-tank 15 is constantly pushed to the inner wall of the fuel tank bottom la of the fuel tank 1. The sub tank 15 1 is owed with a fuel pump 18 that sucks in the fuel in the fuel tank i and sucks in and out the fuel in the sub tank 15, a suction transition unit 19 that filters the fuel sucked by the fuel pump 18, and a filtered fuel spring 18 The sent fuel is sent out of the filter 20. In the second figure, the fuel pump 18 is placed in the sub-tank 15 with the fuel suction side as the lower side, and the motor unit (not shown) is housed inside. The impeller (not shown) sucks the fuel in the sub-tank 15 and pressurizes it. The fuel pressurized by the fuel pump 18 is sent to the pressure regulator 2 to be sent to the pressure regulator 21 after being sent out of the filter 2 to remove the foreign matter. The fuel is supplied to the pressure regulator 21, and the fuel system is adjusted to a predetermined pressure, and is passed through the bellows tube. It is supplied to the delivery pipe 12. Further, the fuel in the fuel tank 1 is supplied from the delivery pipe 12 to the outside of the fuel tank 1. The suction filter 19 is connected to the fuel suction port of the fuel pump 18 to remove a large foreign matter contained in the fuel pump 18 from the fuel sucked from the sub tank 15. The jet pump 23 that supplies fuel to the sub tank 15 is attached to the outer side of the sub tank 15 and pushes the fuel tank by suction pressure! The fuel inside is supplied to the sub-tank 15, and the suction pressure is generated by discharging the remaining fuel discharged from the pressure regulator 21 to the nozzle of the illustrated population. Thereby, even if the fuel in the fuel tank 1 is reduced, the sub tank 15 is filled with fuel. A fuel gauge is provided on the outer peripheral surface of the field tank 15, and the fuel gauge μ has a sensing H portion 25, an arm portion 26, and a floating portion 27 attached to the arm portion 26. The floating portion 27 is floatable in the fuel in the fuel tank casing, and the end portion of the arm portion 26 乂 the sensor portion 25 side is rotated centrally. In the sensor portion 25, a plurality of conductive patterns # having different resistance values are formed, and the end portion of the arm portion 26 on the reverse side is in contact with the conductive pattern of the sensor portion 25. When the floating portion 27 of the fuel in the fuel tank 1 is lifted in response to the fuel remaining in the evening, the arm portion 26 is moved by the floating portion 27 to float. Thereby, the remaining amount of fuel in the fuel tank 1 is detected by the 'arm portion 26 and the picked-up shape 4 of the conductive pattern of the sensing portion 11 25'. The remaining amount of the fuel is output as an electric signal via a pilot (not shown), and the connector 13 outputs the ECU (electronic control unit) (not shown). Next, the support member 16 and the vicinity of the holding member 11 provided in the cover member 323080 7 201238798 are formed in a cylindrical shape, for example, according to Fig. 3, and the end portion of the holding structure that protrudes toward the sub-tank 15 side is provided. The insertion portion 111 has a housing hole j into which the one end 16a of the support member 16 is fitted. The insertion portion 111 is formed in a cylindrical shape. a. The slit portion 1U of the holding member U in which the one end 16a of the support member 16 is inserted and has the retaining member U has a fragile portion 111b which is broken when the stress is applied to the sub-tank. In the figure, H (10) says that the fragile portion mb is provided by the thickness of the cylindrical portion of the subtracting portion lu being thinner than the thickness of the cylindrical portion of the holding member u. That is, the rigidity of the insert portion (1) is made smaller than the rigidity of the holding member η. Further, a reinforcing portion ila is disposed at the root of the holding member 11. Here, when a vehicle (not shown) equipped with the fuel supply device 100 causes a collision accident during running in the traveling direction of the vehicle indicated by the arrow A, the stress generated by the inertial force of the sub-tank 15 (F) It acts on the support member 16 for accommodating a plurality of members including the fuel cartridge 18. The stress acting on the support member 16 is applied to the holding member 11 from the one end i6a of the support member 16 through the fitting portion lu into which the one end 16a of the support member 16 is fitted. Although the sill stress is transmitted to the holding member 11 through the support member 16, the reinforcing portion 11a is disposed at the root of the holding member 11, so that the strength of the root portion of the holding member 11 is large without being damaged by stress, and belongs to The step portion of the fragile portion 111b of the fitting portion 111, that is, the end portion protruding toward the sub-case 15 side of the holding member and the root portion 8 323080 201238798 B between the fragile portions mb of the fitting portion U1 may be cracked. As described above, according to the fuel supply (10) of the embodiment of the present invention, since the support member 16 supporting the sub-tank 15 is provided with the fragile portion 1Ub in the holding member u holding the 16, the pair of μR > At the time of the stress, the root portion of the fragile portion 111b is not filled with the crack of the cover member 1 , and the fuel in the fuel is also generated, and a highly reliable fuel supply device can be obtained. (Embodiment 2) The embodiment of the present invention will be described with reference to Figs. 4 and 5; in the figure: _- or equivalent member, part mark is the same as that of Fig. 4, and Fig. 4 shows tf according to the second embodiment of the present invention. An enlarged cross-sectional view of a main portion of the fuel supply assembly. Fig. 5 is a view showing a main part of the fuel supply device of the second embodiment from the lower direction. In the above, the present invention is described in the case where the (four) supported square end 16a and the holding member 2 portion 111 holding the supporting member 16 are provided with a step difference to constitute a fragile portion (1), that is, a fragile portion. The thickness of the cylindrical portion of the insertion portion U1 is made thinner than the thickness of the cylindrical portion of the _#11, and the step is formed. In the case where one of the support members 16 is inserted, Further, the staying portion of the holding portion 11 of the holding member 11 of the holding member 16 forms a fragile portion formed by, for example, the slits 11101 and _. (10) In addition, the slit lllcl is displayed in a direction perpendicular to the direction in which the vehicle travels, and the slit Ulc2 is oriented in substantially the same direction to capture the shape of a ' 仃 - - Λ 。. Because the fuel supply unit is installed 323080 9 .201238798 The vehicle with 100 is in the direction of the vehicle indicated by the arrow A. When a collision occurs during driving, it will be at the root of the slit lllcl (; cracks occur, and the vehicle and other vehicles When a side collision occurs, a crack is formed at the root of the slit lllc2, so that the crack of the penetrating cover member 10 does not occur, and the fuel in the fuel tank 1 does not leak. Therefore, a highly reliable fuel supply device can be obtained. In the case of slitting, although it is shown in four places, it may be provided in a plurality of parts. (Industrial Applicability) The present invention can realize a reliable one without causing cracks penetrating through the cover member. [Brief Description of the Drawings] Fig. 1 is a side view showing a state in which a fuel supply device according to an embodiment of the present invention is attached to a fuel tank. Fig. 2 is a view showing an embodiment of the present invention. Fig. 3 is a vertical cross-sectional view showing the main part of the fuel supply device according to the first embodiment of the present invention. Fig. 5 is a cross-sectional view showing a main part of a fuel supply device according to a second embodiment of the present invention. Fig. 5 is a view showing a main part of a fuel supply device according to a second embodiment of the present invention. Fuel tank bottom opening portion 10 cover member 10 323080 201238798 11 Holding member 11a Reinforcing portion 12 Feeding pipe 13 Electrical connector 14 Lead 15 Sub-tank 15a Sub-tank bottom 16 Support member 16a Support member one side end 17 Spring 18 Fuel pump 19 Inhaled The filter 20 sends out the filter 21 the pressure regulator 22 the bellows tube 23 the jet pump 24 the fuel gauge 25 the sensor portion 26 the arm portion 27 the floating portion 100 the fuel supply device 111 the insertion portion 111a the receiving hole 111b the fragile portion lllcl, the lllc2 slit B ' C root F stress 11 323080