200419068 玫、發明說明： 【务明所屬之技術領域】 本發明係關於藉由馬達 ^ , 写7析愿枓昇壓，祓蔣檄刺 槽内的燃料加壓注入引擎 1卫將燃利 r A 5丨擎的直流電動機式燃料泵。 1先前技術】 ”，日本特開細2_262483號公報中揭示有直流電 動式燃料泵所使用之直流電動機的構成。 該公報揭示之習知直流電動機係在電樞外周配置於周 ㈤方向形成磁路的圓筒形軛與磁鐵。 輛上形成有用以固定磁鐵的固定孔，而該固定孔係於 輛的板厚方向從内周面貫穿到外周面，並設置成外周面上 所形成的開口直徑大於内周面上所形成㈣口直徑。 磁鐵係將磁粉與樹脂混合而形成環狀的塑膠磁鐵 (Plastic magnet)，其與軛形成一體，且本身的一部分係插 入扼的固定孔。 藉此構成’由於與軛一體成形之磁鐵的一部分係嵌合 於軛的固定孔，且該嵌合部的外周側大於内周側，故即使 在成形後磁鐵發生收縮，也不會從軛分離，而可牢固地固 定於輕。 習知之直流電動機式燃料泵所使用的直流電動機 (即’馬達部），係使用貫穿於軛板厚方向之固定孔，將磁 鐵固定於扼，所以必須在軛側面開設貫穿孔。 因此’在進行開孔加工時，會有軛變形，產生毛邊的 問題。 5 315499 200419068 此外，在將混人古α 于此口有磁粉的樹脂射出於軛的内周側，以 將磁鐵與輛成形為—體時，會有樹脂從輛側面的貫穿孔溢 出，於軛外周產生毛邊的問題。 口為兹鐵從軛端部往軸向觀察時，係位於内側， 所以欲從軛内周側將絲钟& ,， 、兹鐵射出成形時，會有難以進行注料 口（gate)處理的問題。 此外，注料口音扣仏，， ^心射出成形時模具的注入口，凝膠狀 樹脂從該注入口（即，、、* + /枓口）注入模具内。注入模具内之 树脂在預定壓力、預定、、西 —、、 、疋’皿度的條件下，保持預定時間，即 完成成形品。此時，由於 .^ ^ 由於在注入口部分亦充填有樹脂，故 θ殘留固化之注入口形业办 乂狀（大起形狀）的樹脂。因為該部分 不品要，所以以切削笨古 ... 、方式予以去除，而該去除處理即稱 為注料口處理。 1者’使用需要強大磁化力之保持力高 作為磁鐵時，構忐成枚a Α ,輛的厚度必須增厚，但是，因為 輛係由一個構件構成 題。 斤以會有磁化裝置大型化的問 本舍明係為解決上izR H s自I # ^ ^ ^ 、上述問喊點而開發者，其目的在於提 外， 又置貝牙孔以將磁鐵固定於輛，此 稀土類磁鐵時’磁鐵純所構成之磁路構成的自 汽；=且可容易地以小型磁化裝置進行磁鐵磁化的直200419068 Description of the invention: [Technical field of Wuming] The present invention relates to the analysis of the pressure increase by the motor ^, write 7 and pressurize the fuel in the stab tank into the engine. 5 丨 Engine's DC motor fuel pump. [Prior art] ", Japanese Unexamined Patent Publication No. 2_262483 discloses the structure of a DC motor used in a DC electric fuel pump. The conventional DC motor disclosed in the publication discloses a magnetic circuit that is arranged on the outer periphery of the armature in the direction of the circumference. A cylindrical yoke and magnet are formed on the vehicle. A fixing hole for fixing the magnet is formed on the vehicle, and the fixing hole is penetrated from the inner peripheral surface to the outer peripheral surface in the thickness direction of the vehicle and is set to the opening diameter formed on the outer peripheral surface. Larger than the diameter of the opening formed on the inner peripheral surface. The magnet is a plastic magnet formed by mixing magnetic powder and resin to form a ring, which is integrated with the yoke, and a part of itself is inserted into the fixing hole of the choke. 'Because a part of the magnet integrally formed with the yoke is fitted into the fixing hole of the yoke, and the outer peripheral side of the fitting portion is larger than the inner peripheral side, even if the magnet shrinks after the molding, the magnet is not separated from the yoke, but can It is firmly fixed to the light. The DC motor used in the conventional DC motor fuel pump (ie, the 'motor part') uses a fixing hole penetrating in the thickness direction of the yoke to magnetize the magnet. It is fixed to the yoke, so a through hole must be opened on the side of the yoke. Therefore, 'the yoke will be deformed when the hole is processed, and the problem of burrs will occur. 5 315499 200419068 In addition, the resin with magnetic powder mixed with ancient α in this mouth When the magnet and the vehicle are formed into a single body when projected on the inner periphery of the yoke, resin may overflow from the through holes on the side of the vehicle, causing burrs on the outer periphery of the yoke. At the same time, the system is located on the inside, so if you want to mold the silk clock &,,, and zirconium from the inner peripheral side of the yoke, there will be a problem that it is difficult to handle the gate. ^ The injection port of the mold during the heart injection molding, the gel-like resin is injected into the mold from the injection ports (ie ,,, * + / 枓 口). The resin injected into the mold is at a predetermined pressure, predetermined, western ,,,,, Under the condition of 皿 ′, keep the mold for a predetermined time to complete the molded product. At this time, because the injection port is also filled with resin, the θ residual solidified injection port shape has a large shape (large shape) Resin. Because the Ministry It is not necessary, so it is removed by cutting ... and the removal process is called the injection port process. When one uses a high holding force that requires a strong magnetizing force as a magnet, it is structured into pieces a. Α, the thickness of the car must be thicker, but because the car is made up of one component. The problem is that the size of the magnetizing device will be large. To solve the above problem, izR H s since I # ^ ^ ^ The purpose of the developer is to provide an extra hole for fixing the magnet to the car. This rare earth magnet is a self-steam composed of a magnetic circuit composed of pure magnets; and it can easily be a small magnetization device. Magnetized straight
Μ電動機式燃料泵。 ^ I 【發明内容】 本發明之直流電動機式姆 .Πέ - . π料泵，係隨者馬達部之直流 315499 6 200419068 電動機的驅動，於上i/Ji @ 4 & π 冑於上这馬達4之軛所固定的泵部中，將燃 /、、升垄而輸出’其中··上述軛係具備：第！筒狀軛，係稀 土類的環狀磁鐵配置於内周 、 Μ及弟2同狀軛，在對應於 述磁鐵的位置，且設置於上述第1筒狀輛的外周。 因此，得以實現一種不需要在軛側面設置用以固定磁 輛上的貫穿孔’再者，於使用稀土類磁鐵日夺，由磁鐵 人輛構成之磁路構造的自由度較高，且可容易地利用小型 磁化裝置進行磁鐵磁化的直流電動機式燃料泵。 【實施方式】 [第1實施型態] 以下，說明關於本發明之第1實施型態。 第1圖係本發明第1施型態之直流電動機式燃料果 (以下，亦簡稱燃料泵）的剖視圖。燃料果i係由 和泵部20所構成。 ° 0 首先’說明關於馬達部1()。磁鐵2係形成圓筒狀 配置於輛3的内周φ，與電樞6的外周面隔著預定距離， 而在電樞6的外周與軛3 一起形成磁路。 射出=如Μ . h . Ν之鉉(Μ。— )的磁鐵材料 射出於輛3的内周面，以製得與扼3呈_體化的磁鐵2， 則磁鐵2與軛3間不需黏合劑。 軛3係包括：由STKM(機械構造用碳鋼鋼管） 的第1筒狀軛4與第2筒狀軛5，而在第2筒狀軛5上， 將第1筒狀軛4從軸向壓進直到抵接於第2筒狀軛5 部50a。 ° 11的凸 315499 7 200419068 再者’如後所述，從磁化容易度的觀點視之，藉射出 成形而將磁鐵2與第1筒狀軛4形成一體時，以將第丨筒 狀軛4壓進第2筒狀軛5前，先將磁鐵2磁化為佳。 又’用以藉射出成形而形成磁鐵2的注料口部係設置 於磁鐵2的端面。 此時，從磁化的精確度、或對第丨筒狀軛4施以機械 加工日守、欠形較少的觀點視之，第1筒狀軛4的厚度以3mm 以下為佳，較理想是2mm以下。 藉由將第2筒狀軛5之兩端部朝轉軸7之軸心方向彎 折加工，而將其與軸承座12、入口殼21、出口殼23形成 一體。 此外，亦可僅將第2筒狀軛5之一邊端部朝轉軸7之 轴心方向背、折加工。 在此情況下，在沒有彎折加工之另一邊端部，將軸承 座12或入口殼（inlet h〇using)2l與出口殼（〇utiet匕⑽^叫） 23所構成的外殼壓入，加以固定。 例如，以聚縮醛（p〇lyacetal)為主成分之絕緣性樹脂所 形成的軸承座12收納有：止回閥13、用以支持轉軸7的 軸承8 ‘電性電刷9、用以將該電刷9推壓至整流子6a 的線圈彈黃1 G、用以將電流從燃料泵外供給至電刷9的引 線11等。 繼之，說明關於泵部20。入口殼21係由樹脂形成， 收納有轉軸擋止件28,且設有用以吸取未圖示之燃料槽内 的燃料之吸取口。 315499 8 出口殼23係由樹脂 有用以支持轉軸7的轴承有排出口 24,同時收納 S$r 27 ^ Μ α 而5亥排出口 24係用以將細 抓路27幵壓之燃料排至電樞6側。 ^ Μ ’且相形成 (impeller)26的中心部之 溝之泵輪 之轉軸7端部所屬的 I 口有剖面呈D字形 1辑的D缺口（叫）部。 由入口敢21及出口殼22的 的複數翼溝，形成流路27β溝…、〜與泵輪26 繼之，說明燃料泵的動作。 田未圖不之電池所供給之電& 經引線11、電刷9、整、、” A i、電而子(未圖示） 藉由習知的直流電動機：理，a:供給至電樞6“夺，電樞6 26 —起旋轉。 ’ ’、M轉車由7為旋轉軸，與果輪 入，3之’未圖示之燃料槽内的燃料，從吸取口 22導 口 I進入馬心。内的：，至5_後，通過排出 10内流經電樞6與_ 2;日^加壓後的燃料，在馬達 13 载2間日守將電樞ό冷卻，且令止回閥 後：：厂’接著’從轴承座12的排出管⑵排出。該排出 後的㈣燃料供給至未圖示之内燃機（引擎）。 較严斤述軛3係由厚度較薄的第1筒狀輛4與厚度 ^的第2筒狀輛5所構成。 因此，使用保持力強的稀土類磁鐵2日夺，首先，可藉 面，士出成形將稀土類磁鐵2形成於第ι筒狀輛4的内周 亚且在該狀態下磁化磁鐵2,接著，將内面形成有磁 9 315499 200419068 鐵2的第1茼狀輛4固定於第2筒狀輛5所期望的位置。 相較習知燃料泵中，使用保持力比稀土類磁鐵還弱之 燒結磁鐵’第1實施型態中，使用稀土類磁鐵2的燃料系 1時，軛3的厚度必須增厚。 另方面，燃料泵1與一般的直流電動機不同，必須 在軸向叹置泵部20。再者，由於昇壓後的燃料會通過燃料 泵内故必須藉由第2筒狀車厄5液密地（即，使燃料不會 漏成）保持軸承座12、入口殼21、出口殼23。 所以，相較於一般的直流電動機，第2筒狀軛5在軸 向的長度（軸向全長）較長。 本貫施型態中，由於軛3係由第丨筒狀軛4與第2筒 狀軛5的兩構件構成，故例如僅改變第丨筒狀軛$的長度， 亦可變更磁路。 又Μ motor fuel pump. ^ I [Summary of the Invention] The DC motor of the present invention, Πέ-. Π material pump, is a direct current 315499 6 200419068 motor of the follower motor section, i / Ji @ 4 & π In the pump unit fixed by the yoke of 4, the combustion /, and ridges are outputted, among which the above yoke system includes: No.! The cylindrical yoke is a ring-shaped magnet made of rare earth. The cylindrical yoke is arranged on the inner periphery, the same yoke as M, and is located on the outer periphery of the first cylindrical vehicle at a position corresponding to the magnet. Therefore, it is possible to realize a through-hole that does not need to be provided on the side of the yoke to fix the magnetic vehicle. Moreover, when a rare earth magnet is used, the degree of freedom of the magnetic circuit structure composed of a magnet vehicle is high, and it is easy. A DC motor fuel pump that uses a small magnetization device to magnetize a magnet. [Embodiment] [First Embodiment] Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view of a DC motor fuel cell (hereinafter, also simply referred to as a fuel pump) according to a first embodiment of the present invention. The fuel cell i is composed of a pump unit 20. ° 0 First, the motor section 1 () will be described. The magnet 2 is formed in a cylindrical shape on the inner periphery φ of the vehicle 3 and is spaced a predetermined distance from the outer peripheral surface of the armature 6. A magnetic circuit is formed on the outer periphery of the armature 6 together with the yoke 3. Injection = such as M.h.N. (M.—) The magnet material is shot out of the inner peripheral surface of the vehicle 3 to make the magnet 2 that is _body-like, so there is no need between the magnet 2 and the yoke 3. Adhesive. The yoke system 3 is composed of a first cylindrical yoke 4 and a second cylindrical yoke 5 of STKM (carbon steel pipe for mechanical structure), and the second cylindrical yoke 5 is configured to extend the first cylindrical yoke 4 from the axial direction. It presses until it abuts on the 2nd cylindrical yoke 5 part 50a. ° 11 Convex 315499 7 200419068 Further, as described later, from the viewpoint of the ease of magnetization, when the magnet 2 is integrated with the first cylindrical yoke 4 by injection molding, the first cylindrical yoke 4 is integrated. Before pressing into the second cylindrical yoke 5, the magnet 2 is preferably magnetized. The injection port portion for forming the magnet 2 by injection molding is provided on the end surface of the magnet 2. At this time, from the viewpoint of the accuracy of the magnetization, or the fact that the machining of the first cylindrical yoke 4 is performed with less deformation, the thickness of the first cylindrical yoke 4 is preferably 3 mm or less, and more preferably 2mm or less. The second cylindrical yoke 5 is integrated with the bearing housing 12, the inlet housing 21, and the outlet housing 23 by bending both end portions of the second cylindrical yoke 5 toward the axial center of the rotating shaft 7. Alternatively, only one end portion of the second cylindrical yoke 5 may be backed and folded toward the axial center direction of the rotary shaft 7. In this case, at the end of the other side that is not bent, press the housing formed by the bearing housing 12 or the inlet housing 2l and the outlet housing 23 into the housing. fixed. For example, a bearing housing 12 formed of an insulating resin mainly composed of polyacetal contains a check valve 13, a bearing 8 ′ for supporting the rotating shaft 7, and an electric brush 9 for The brush 9 is pushed to the coil spring 1G of the commutator 6a, and a lead wire 11 for supplying current to the brush 9 from outside the fuel pump is provided. Next, the pump unit 20 will be described. The inlet case 21 is formed of resin, and houses a shaft stopper 28, and is provided with a suction port for sucking fuel in a fuel tank (not shown). 315499 8 The outlet shell 23 is made of resin to support the bearing of the rotating shaft 7. The bearing 24 has a discharge port 24, and at the same time stores S $ r 27 ^ Μ α, and the 5 Hai discharge port 24 is used to discharge the fuel that is pressed on the road 27 to the electricity. 6 sides. ^ Μ ′ and the phase 7 (impeller) 26 in the central part of the groove of the pump wheel, the end of the rotating shaft 7 belongs to the I-portion has a D-shaped section D series (called) section. The plurality of wing grooves at the inlet port 21 and the outlet shell 22 form channel 27β grooves ..., and the pump wheel 26. Next, the operation of the fuel pump will be described. Tian Weitu's battery power & via lead 11, brush 9, rectifier, "A i", electric power (not shown) by the conventional DC motor: management, a: supply to power The armature 6 "wins, and the armature 6 26 rotates together. ′ ′ And M turn the car from 7 as the rotating shaft and enter into the fruit wheel, and the fuel in the fuel tank (not shown) of 3 ′ enters the horse's heart through the suction port 22 and the guide port I. Inner: After 5_, discharge the fuel flowing through the armature 6 and _ 2 in the 10th; after the pressurized fuel, cool the armature in the motor 13 for 2 days and cool the armature. ：: The factory 'continues' to discharge from the discharge pipe ⑵ of the bearing block 12. This discharged thorium fuel is supplied to an internal combustion engine (engine) (not shown). The more severe yoke 3 is composed of a first cylindrical vehicle 4 having a thin thickness and a second cylindrical vehicle 5 having a thickness of ^. Therefore, using a rare-earth magnet with a strong holding force on the 2nd, first, the rare-earth magnet 2 can be formed on the inner periphery of the first cylindrical car 4 and magnetized in this state. The first car 4 with the magnetic 9 315499 200419068 iron 2 formed on the inner surface is fixed to a desired position of the second tubular car 5. In comparison with the conventional fuel pump, the sintered magnet having a weaker holding force than that of the rare-earth magnet is used in the first embodiment. When the fuel system 1 of the rare-earth magnet 2 is used, the thickness of the yoke 3 must be increased. On the other hand, the fuel pump 1 is different from a general DC motor, and it is necessary to dispose the pump portion 20 in the axial direction. Furthermore, since the boosted fuel passes through the fuel pump, it is necessary to hold the bearing housing 12, the inlet housing 21, and the outlet housing 23 in a liquid-tight manner (that is, to prevent fuel leakage) through the second cylindrical car. . Therefore, the length of the second cylindrical yoke 5 in the axial direction (the entire length in the axial direction) is longer than that of a general DC motor. In this embodiment, since the yoke 3 is composed of two members, the first cylindrical yoke 4 and the second cylindrical yoke 5, it is also possible to change the magnetic circuit by changing only the length of the first cylindrical yoke $, for example. also
因此， 度車父南。 相較於習知形成一體化的輛，磁路構成的自由 ，亦可藉由改變第1筒狀軛4的長度，來因應要 樣式不同的複數種燃料泵，㈣2筒狀梃5 賤用 在複數種燃料泵。 』使用 一再者’由於軛3係由第1筒狀軛4，以及軸向長产 筒狀輕4之第2筒狀輛5之兩構件所構成，所以可 望：不會對磁路造成影響之第2筒狀軛5端部的厚度變 藉由將第2筒狀軛5 方向的彎折加工得以容易 端部的厚度變薄，轉軸7朝軸心 進行，燃料泵1的組裝亦變得容 315499 10 200419068 易0 :外’由於是形成在第！筒狀輛4之内周固定磁鐵2 成’故燃料泵】内之磁鐵2的位置’係可藉由改變第 同、厂“對於第2筒狀扼5的固定位置來調整。 位署因此’可在第1筒狀軛4内之製品構成狀況較方便的 位置’固定磁鐵2。 ★又’藉由使第1筒狀軛4與磁鐵2之軸向長度一致， 第1筒狀軛4與磁鐵2端部的端面位置一彡，可：第1 狀輛4的端部附近設置射出成形用的注料口。 „在此情況中，不須像以往那樣在第1筒狀ir“的側面， 二二射出成形用的注料口孔，或者m筒狀輛4的内 =設置射出成形用的注料口，而且注料口處理可較容易 進行。 ,再者’由於第1筒狀軛4與第2筒狀軛5係彼此合作 而，成周圍方向的磁路而發生作用，&第i筒狀耗4及第 同狀軛5厚度的選擇範圍較廣。 日=如’藉由將當作主要磁路而作用之第2筒狀軛5加 厚’第1筒狀軛4就得以變薄。 、磁鐵2使用而要強大磁化力之保磁力高的稀土類磁 鐵時丄依據該保磁力，須有厚度較厚的磁路，纟是，由於 f 1冋狀軛4及第2筒狀軛5的厚度選擇範圍較廣，故可 容易地因應。 亦即，在磁鐵2使用需要強大磁化力之保磁力高的稀 土類磁鐵時’可將帛i筒狀扼4變薄，令射出成形於該第 315499 11 200419068 1筒狀輛4内側的磁鐵2磁化後，裝設當作主要磁路而作 用之弟2筒狀耗5。 因此’可利用小型的磁化裝置將磁鐵2磁化，同時， 由於磁鐵2磁化時，不需要之第1筒狀軛4所佔的體積較 小，故可提高磁化的精確度。 在此，使用第2圖，說明磁鐵的磁化。So, degree car father south. Compared with the conventional vehicles that form an integrated vehicle, the freedom of the magnetic circuit can also be changed by changing the length of the first cylindrical yoke 4 to respond to a plurality of different types of fuel pumps. Multiple fuel pumps. "Use again and again 'Since the yoke 3 is composed of the first cylindrical yoke 4 and the two components of the second cylindrical car 5 which produces a long cylindrical light cylinder 4 in the axial direction, it is expected that it will not affect the magnetic circuit. The thickness of the end portion of the second cylindrical yoke 5 is reduced by bending the second cylindrical yoke 5 in the direction. The thickness of the end portion is easily reduced. The rotation shaft 7 is moved toward the center of the shaft, and the fuel pump 1 is also assembled. Rong 315499 10 200419068 Yi 0: Outer 'because it was formed in the first! The magnet 2 is fixed on the inner periphery of the tubular vehicle 4 so that the "position of the magnet 2" in the fuel pump can be adjusted by changing the fixed position of the second tubular plant 5 for the second tubular choke 5. The magnet 2 can be fixed at a position where the product configuration in the first cylindrical yoke 4 is more convenient. ★ Also, by making the axial length of the first cylindrical yoke 4 and the magnet 2 the same, the first cylindrical yoke 4 and The position of the end face of the end of the magnet 2 can be set at a single position, and a filling port for injection molding can be provided near the end of the first car 4. In this case, it is not necessary to place the side of the first cylindrical ir as in the past. The injection hole for two or two injection molding, or the inside of the m tube 4 is provided with the injection hole for injection molding, and the injection hole processing can be easily performed. Moreover, because of the first cylindrical yoke, 4 and the second cylindrical yoke 5 cooperate with each other to act as a magnetic circuit in the surrounding direction, and the choice of the thickness of the i-th cylindrical yoke 4 and the thickness of the same yoke 5 is wide. The second cylindrical yoke 5 which acts as the main magnetic circuit is thickened, and the first cylindrical yoke 4 is thinned. The magnet 2 uses a strong coercive force and a coercive force. High rare-earth magnets require a thick magnetic circuit depending on the coercive force. Because the thickness of f 1 冋 -shaped yoke 4 and the second cylindrical yoke 5 are widely selected, they can be easily coped with. That is, when the rare earth magnet with a high coercive force that requires a strong magnetizing force is used for the magnet 2, the 帛 i tube 4 can be thinned, and the magnet formed inside the 315499 11 200419068 1 cylindrical vehicle 4 can be injected. After the 2 magnetization, the device is installed as a main magnetic circuit. The 2 cylindrical shape consumes 5. Therefore, 'the magnet 2 can be magnetized by a small magnetization device, and the first cylindrical yoke is not needed when the magnet 2 is magnetized. 4 occupies a small volume, so the accuracy of magnetization can be improved. Here, the magnetization of the magnet will be described using FIG. 2.
第2圖係用以說明利用磁化裝置40以相同的磁化力 4 1磁化磁鐵2時的狀態圖，第2圖（a)係如本實施型態所 示，表示在厚度較薄的第i筒狀軛4的内周形成有磁鐵2 的情形，第2圖（b)係如習知方式所示，表示在厚度較厚之 筒狀輛的内周形成有磁鐵2的情形。 第2圖（a)的情況中，以磁化裝置4〇施以預定磁化力 4 1磁通42於第1筒狀扼4及磁鐵2形成交又，而可良好 地將磁鐵2的磁化。 另一方面，在第2圖（b)的情況中，施以相同於第2圖 (a)的磁化力41時，磁通42沒有與磁鐵2交又（所謂短路 狀態），而無法充分地將磁鐵2磁化。 因此，相較於第2圖（a)的情況，將第2圖…）之磁鐵2 磁化時必須要有較強的磁化力。 1筒狀輛4 境造成溫度 時，第1筒 磁路不易被 事先選定第2筒狀軛5的線膨脹率小於第 的線膨脹率時，即使因燃料泵的運轉或使用環 上昇，而使第1筒狀軛4、第2筒狀軛5膨脹 狀軛4與第2筒狀軛5間的接觸亦得以保持， 分割。 315499 12 200419068 此外’第1筒狀軛4與第2筒狀軛5的固定雖 方式為例來說明，然而也可利用熱套等方式。 [第2實施型態] 以下，說明本發明之第2實施型態。 第3圖係本發明第2實施型態之直流電動機式燃 的磁鐵與軛的簡略剖視圖，第3圖⑷係第i筒狀 二 長度大於第2筒狀輛的情形，第3圖⑻係第2筒狀： 向長度大於第1筒狀軛的情形。 第3圖⑷所不之構造中，磁鐵2a的端面係抵接於$ 置於第1同狀軛4a下端内面的肋部4〇a，藉此構成 燃料果1使用日夺’得以防止藉成形作業而-體成形於第i 周時或成形後，配置於第i筒狀輕h内之磁 鐵2a往下移動。 由於第2筒狀輛5a之構成係與第i實施型態所說明之 第Κ同狀輛5相同，其他未圖示之構成係與第【實施型態 相同，故省略其說明（以下的實施型態亦相同）。 〃此外’藉射出成形將磁鐵2a 一體成形於第i筒狀輛 h後’施以磁化時’相較於第3圖(b)，由於第丄筒狀軛 乜之軸向長度較短(即’與磁鐵2a之軸向長度大致相同）， 故可容易地進行磁化。 a尤其是燃料泵的情況中，相較於直流電動機，由於泵 部⑽必須形成於軸向，第2筒狀軛5a之軸向長度變長， 故該作用效果較顯著。 第3圖㈦所示之構造中，第2筒狀輕讣係於對應磁 315499 13 200419068 鐵2b的位置（即，在與磁鐵2b、帛1筒狀輛4b 一起構成 磁路的位置），覆蓋第1筒狀軛4b外周的一部分。 、因為是以上述方式構成，故僅需在構成磁路的必要區 域，配置第2筒狀扼5b即可，燃料豕整體的外周得以縮小。 此外，與第3圖（a)的情況相比較，壓入第i筒狀輛朴 與第嫩㈣後，由於第】筒狀軏4b與第2筒狀輛％ 的.固定強化，故可容易地熔接兩者。 在第3 ®(b)的情況中，第丨筒狀輛朴將軸承座叫參 第1圖）入口冗又21(參考第1圖）、出口殼23 (參考第工 圖）加以固定。 〃再者，與習知例同樣地’磁鐵2b在軸向的長度比第^ 间狀輕4b短且不及其一半左右，而配置於第」筒狀輛仆 之軸向大致中央。 因此，磁鐵几在成形後插入固定於第！筒狀輛讣， :者，與習知例同樣地在第丨筒狀輛4b的側面設置未圖示 、貝牙孔’而從第i筒狀軛仆的側面，經由該貫穿孔，將 ::二-體成形於第i筒狀輛4b的内周，此方式從製造 政率來說較為理想。 [第3實施型態] 以下，况明本發明之第3實施型態。第3實施型態係 二1、第2實施型態所說明之燃料泵的磁鐵與第i筒狀麵 /形例’任—者皆是藉射出成形將磁鐵—體成形於第1 同狀輛之例。 第4圖係本發明第3實施型態之直流電動機式燃料栗 315499 14 200419068 的磁鐵與第i筒狀輛的簡略剖視圖，第4圖(a)係磁鐵形成 錐形的例子’第4圖(b)係以磁鐵的兩端固定於第i筒狀扼 的例子，第4圖⑷係在第i筒狀輛端面設置凸部的例子， 第4圖（d)係僅表示第4圖（c)之軛的圖。 第4圖⑷的構成係將第1筒狀扼仏的内周面形成錐 形，並且，以設置於磁端部的肋冑恢覆蓋第i筒狀 軛4c的下端，故可防止磁鐵。朝軸向移動。 呈一體化之磁鐵2d兩 兩端’故可防止磁鐵 第4圖（b)的構成係以射出成形 端部的肋部，覆蓋第丨筒狀軛4d的 2d於軸向移動。 苐4圖（c)的構成係在第1 _ 同，心 你罘丄间狀軛4e的上端面，如第4 圖（d)所示那樣設置凸形50e，並 0 φ ^ 射出成形呈一體化之磁 、載e復蓋第1筒狀輛4 e的兩端，& γ κ ^ ^ ]旳鳊故可防止磁鐵2e於軸向 牙夕動及旋轉。此外，第1筒妝鈿 ,^ 乐问狀軛4e之凸形50e形成凹形時， 也可獲致同樣的作用效果。 [第4實施型態] 第4實施型態係防 之磁鐵旋轉的變形 —以下，說明本發明第4實施型態。 止第1至第3實施型態所說明之燃料泵 例。 第5圖係本發明第4音 M ^ . 、β i恶之直流電動機式燃料 = 座的簡略示意圖。第5圖讀筒狀磁鐵 5 Η (芬考第1圖）相對侧的端面呈平坦狀的例子， 磁鐵端面形成波狀時的例子，第5圖⑷至ω係在々 315499 15 200419068 鐵端面設置凹部、凸部時的例子。 為了方便說明，第5圖⑻係以丨構件所構成之筒狀扼 為例來說明，然而’與第i至第3實施型態同樣地，筒狀 幸厄亦可由第i筒狀輛與第2筒狀耗兩構件所構成。 第5圖（a)係表示軸承座12f與磁鐵^皆為端面平坦的 :冓成，如第5圖⑻所*，磁鐵2f之兩端面係由輛％的凸 φ部（即，在軛3f之泵部20側的端面内周朝直徑方向突出而 成的凸部）50f與軸承座i2f所夾持。 由於軸承座12f收納有直流電動機之電刷9(參考第} 圖）、電樞6(參考第1圖）之軸承8(參考第丨圖）等，且形成 有昇壓後燃料的排出管12a(參考第i圖)，全是直流電動機 式燃料泵必須設置的零件，故不需增加零件，即可阻止磁 鐵2f在軸向移動及旋轉。 第5圖（c)的構成係將軸承座12g與磁鐵2§的端面形 _ 成波狀，藉由該波狀部彼此扣合，得以阻止磁鐵2g的旋 轉。 第5圖（d)的構成係在軸承座丨2h的端面設置凹部 70h，在磁鐵2h的端面設置凸部6〇h，藉由此等凹部及凸 部彼此扣合，得以阻止磁鐵2h的旋轉。 第5圖（e)的構成係在軸承座丨2k的端面設置凸部 61k，在磁鐵2k的端面設置凹部71k，藉由此等凹部及凸 部彼此扣合，得以阻止磁鐵2k的旋轉。 第5圖（f)的構成係在軸承座丨2m的端面設置於周圍方 向具有彈性的凹部72m，在磁鐵2m設置凸部62m，藉由 315499 16 200419068 此等凹部及凸部彼此扣合，得以阻止磁鐵2m的旋轉。 第5圖（g)的構成係在軸承座1 2η設置於周圍方向具有 彈性的凸部73η，在磁鐵2η設置凹部63η，藉由此等凹部 及凸部彼此扣合，得以阻止磁鐵2m的旋轉。 再者，由於第5圖（f)時的凹部72m或第5圖（g)時的 凸部7311具有彈性，故相較於第5圖（d)或第5圖（e)的情 形’得以令磁鐵與軸承座不會鬆動而扣合。 此外，說明例如軸承座丨2m的凹部72m具有彈性的理 由轴承座1 2m之凹部72m的構造係包括：可供磁鐵 之凸部62m插入的開口窄於磁鐵2m之凸部62m的插入部 (梯形部分）、突出於該插入部兩側的一對突起、以及設置 於該突起與軸承座12m之側部間的縫隙。於是，當磁鐵2^ 的凸部62m插入軸承座12m的凹部—日夺，插入部的開 凹。卩72m乍，故一對突起於縫隙側彈性變形的狀態下 (亦即’具有軸彈性的狀態），磁鐵2m#軸承座心得以 定位。 藉射出成形製成磁鐵2h或磁鐵2m的情況中，第5圖 ⑷之磁鐵2h或第5圖⑴之磁鐵&的凸部，當用做成形 時所製成之注料π部時，不f要施行注料口處理故較佳。 •r庄料口為直徑或長寬為^ 2 6職左右高度】議Fig. 2 is a diagram for explaining a state when the magnetization device 40 is used to magnetize the magnet 2 with the same magnetizing force 41, and Fig. 2 (a) shows the i-th cylinder having a thin thickness as shown in this embodiment. When the magnet 2 is formed on the inner periphery of the yoke 4, FIG. 2 (b) shows a case where the magnet 2 is formed on the inner periphery of a thick cylindrical car as shown in a conventional manner. In the case of Fig. 2 (a), a predetermined magnetizing force 41 is applied by the magnetizing device 40, and a magnetic flux 42 intersects with the first cylindrical choke 4 and the magnet 2, so that the magnet 2 can be magnetized well. On the other hand, in the case of FIG. 2 (b), when the same magnetizing force 41 as that of FIG. 2 (a) is applied, the magnetic flux 42 does not intersect with the magnet 2 (so-called short-circuit state), and cannot be sufficiently Magnet 2 is magnetized. Therefore, compared with the case of Fig. 2 (a), it is necessary to have a stronger magnetizing force when magnetizing the magnet 2 of Fig. 2). When the temperature of the cylinder 1 is caused by the environment, the magnetic circuit of the cylinder 1 is difficult to be selected in advance. When the linear expansion coefficient of the second cylindrical yoke 5 is less than the linear expansion coefficient of the first cylinder, even if the fuel pump is operated or the use ring rises, The contact between the first cylindrical yoke 4 and the second cylindrical yoke 5 and the second cylindrical yoke 5 is maintained and divided. 315499 12 200419068 In addition, although the method of fixing the first cylindrical yoke 4 and the second cylindrical yoke 5 is described as an example, a method such as a heat jacket may be used. [Second Embodiment] Hereinafter, a second embodiment of the present invention will be described. FIG. 3 is a schematic cross-sectional view of a DC motor-burning magnet and a yoke according to a second embodiment of the present invention. FIG. 3 is a case where the i-th cylindrical shape is longer than the second cylindrical vehicle, and FIG. 3 is a first sectional view. 2 cylindrical: When the length is longer than the first cylindrical yoke. In the structure shown in Fig. 3, the end face of the magnet 2a is in contact with the rib portion 40a placed on the inner surface of the lower end of the first homogenous yoke 4a. When the body is formed at the i-th cycle or after forming, the magnet 2a arranged in the i-th cylindrical light h is moved downward. Since the structure of the second cylindrical vehicle 5a is the same as that of the K-shaped identical vehicle 5 described in the i-th embodiment, the other unillustrated structures are the same as those in the [implementation mode, so the description is omitted (the following implementation The pattern is the same). 〃 In addition, 'the magnet 2a is integrally formed on the i-th cylindrical vehicle h by injection molding' and 'magnetized' as compared to FIG. 3 (b), because the axial length of the 丄 th cylindrical yoke 较 is shorter (i.e. (The length is substantially the same as the length of the magnet 2a in the axial direction), so that it can be easily magnetized. a Especially in the case of a fuel pump, compared with a DC motor, the pump portion ⑽ must be formed in the axial direction, and the axial length of the second cylindrical yoke 5a becomes longer, so this effect is more significant. In the structure shown in FIG. 3 (a), the second cylindrical light beam is attached to the position corresponding to the magnetic 315499 13 200419068 iron 2b (that is, the position forming the magnetic circuit together with the magnet 2b and the cylindrical car 4b), covering A part of the outer periphery of the first cylindrical yoke 4b. Since it is configured as described above, it is only necessary to arrange the second cylindrical choke 5b in the area necessary for forming the magnetic circuit, and the entire periphery of the fuel pluton can be reduced. In addition, compared with the case of FIG. 3 (a), after pushing in the i-th tubular car and the tender tender, it is easy to fix and strengthen the fourth tubular car 4b and the second tubular car. Ground welding both. In the case of No. 3 ® (b), the cylindrical bearing is called the reference seat (see Figure 1). The inlet is redundant 21 (refer to Figure 1), and the outlet housing 23 (refer to the drawing) is fixed. Furthermore, as in the conventional example, the length of the magnet 2b in the axial direction is shorter than that of the fourth space shape 4b and not more than about half, and it is disposed approximately at the center of the second cylindrical shape. Therefore, the magnet is inserted and fixed at the first after forming! Cylindrical car 讣,: As in the conventional example, an unillustrated, bayonet hole is provided on the side of the first tubular car 4b, and from the side of the i-th cylindrical yoke, through the through hole, will: : The two-body is formed on the inner periphery of the i-th cylindrical car 4b. This method is ideal in terms of manufacturing efficiency. [Third Embodiment] Hereinafter, a third embodiment of the present invention will be described. In the third embodiment, the magnets of the fuel pump and the i-th cylindrical surface described in the second embodiment are used to form the magnet body into the first homogeneous vehicle by injection molding. Example. Fig. 4 is a schematic cross-sectional view of the magnet of the DC motor fuel pump 315499 14 200419068 of the third embodiment of the present invention and the i-th cylindrical vehicle. Fig. 4 (a) shows an example where the magnet is tapered. b) is an example in which both ends of the magnet are fixed to the i-th cylindrical shape, and FIG. 4 is an example in which a convex portion is provided on the end surface of the i-th cylindrical shape, and FIG. ) Of the yoke. The structure of Fig. 4 (a) is a tapered inner peripheral surface of the first cylindrical choke, and a rib provided at the magnetic end portion is used to cover the lower end of the i-th cylindrical yoke 4c, so that magnets can be prevented. Move in the axial direction. The two ends of the integrated magnet 2d 'prevent the magnet. The structure of Fig. 4 (b) is formed by injection molding the ribs at the ends and covers 2d of the cylindrical yoke 4d in the axial direction. The structure of Fig. 4 (c) is on the top surface of the first _ concentric yoke-like yoke 4e. As shown in Fig. 4 (d), a convex shape 50e is set, and 0 φ ^ is injection-molded to form a whole. The magnetization and the magnetic carrier cover both ends of the first cylindrical car 4e, & γ κ ^ ^] so it can prevent the magnet 2e from moving and rotating in the axial direction. In addition, the same effect can also be obtained when the convex shape 50e of the first tube makeup yoke 4e is formed into a concave shape. [Fourth Embodiment] The fourth embodiment prevents deformation of the magnet in rotation—the following describes the fourth embodiment of the present invention. Only the fuel pumps described in the first to third embodiments have been described. FIG. 5 is a schematic diagram of the fourth electric motor type fuel = seat of the fourth tone M ^., Β i of the present invention. Figure 5 reads the example of the cylindrical magnet 5 Η (Fenco first figure). The end face on the opposite side is flat, and the example when the end face of the magnet is wavy. Figure 5 ⑷ to ω are set at 々315499 15 200419068 iron end face Examples of concave and convex parts. For the convenience of illustration, Figure 5 is based on the cylindrical shape of the components as an example. However, similar to the i-th to third embodiments, the tubular shape can also be changed from the i-th cylindrical vehicle to the first. Consisting of two tubes and two members. Figure 5 (a) shows that the bearing seat 12f and the magnet ^ are both flat in the end face: as shown in Figure 5 *, the two end faces of the magnet 2f are made of convex φ portions (ie, in the yoke 3f). A convex portion (50f) in which the inner end surface of the pump portion 20 side protrudes in the diameter direction is sandwiched between the bearing housing i2f. The bearing block 12f contains a brush 9 (refer to FIG.}) Of the DC motor, a bearing 8 (Ref. 丨) of the armature 6 (refer to FIG. 1), and the like, and a boosted fuel discharge pipe 12 a is formed. (Refer to Fig. I), all of the DC motor fuel pump components must be installed, so the magnet 2f can be prevented from moving and rotating in the axial direction without adding additional parts. The structure of FIG. 5 (c) is a wave shape of the bearing housing 12g and the end face of the magnet 2§, and the wave-shaped portions are fastened to each other to prevent the magnet 2g from rotating. The structure of FIG. 5 (d) is provided with a recessed portion 70h on the end surface of the bearing seat 2h, and a convex portion 60h on the end surface of the magnet 2h. By this, the recessed portion and the convex portion are fastened to each other to prevent the magnet 2h from rotating. . The structure of Fig. 5 (e) is provided with a convex portion 61k on the end surface of the bearing block 2k, and a concave portion 71k on the end surface of the magnet 2k. The concave portion and the convex portion are fastened to each other to prevent the magnet 2k from rotating. The structure of FIG. 5 (f) is that a concave portion 72m having elasticity in the peripheral direction is provided on the end face of the bearing seat 2m, and a convex portion 62m is provided in the 2m of the magnet. Stop the magnet from rotating 2m. The structure of FIG. 5 (g) is that the bearing housing 12 2η is provided with a convex portion 73η having elasticity in the peripheral direction, and the magnet 2η is provided with a concave portion 63η. By this, the concave portion and the convex portion are fastened to each other to prevent the magnet 2m from rotating. . Furthermore, since the recessed portion 72m in FIG. 5 (f) or the convex portion 7311 in FIG. 5 (g) has elasticity, compared with the case of FIG. 5 (d) or 5 (e), it is possible So that the magnet and the bearing seat will not loosen and engage. In addition, for example, the reason why the 2m recessed portion 72m of the bearing seat is elastic. The structure of the 12m recessed portion 72m of the bearing block includes an opening through which the convex portion 62m of the magnet can be inserted narrower than the insertion portion 62m of the convex portion 2m of the magnet (trapezoidal Part), a pair of protrusions protruding from both sides of the insertion portion, and a gap provided between the protrusion and a side portion of the bearing housing 12m. Therefore, when the convex portion 62m of the magnet 2 ^ is inserted into the concave portion of the bearing housing 12m-the sunken portion, the insertion portion is recessed.卩 At 72m, a pair of protrusions are elastically deformed on the slit side (that is, a state with axial elasticity), and the 2m # bearing seat of the magnet is positioned. When the magnet 2h or the magnet 2m is formed by injection molding, the magnet 2h of FIG. 5 or the magnet & convex portion of FIG. 5 is used as the injection π portion made during molding. f It is better to perform injection port treatment. • r Zhuang material mouth is diameter or length and width is ^ 2 about 6 post height]
左右的圓柱狀、角柱狀。 [產業上利用之可能性J 本^明传·以貫現磁路構成之自 ^ g, ,^ ^ ^ 曰田度N，容易以小型磁 衣置進打磁鐵磁化之直流電動機式燃料泵。 315499 17 419068 【圖式簡單說明】 第1圖係本發明第丨實施型態之直流電動機 的剖視圖。 “、'料泵 弟2圖（a)及（b)係磁鐵之磁化的說明圖。 弟3圖⑷及(b)係本發明第2實施型態之直流 火占料泵的磁鐵與輛的簡略剖視圖。 式 第4圖（a)至（d)係本發明第3實施型態之直流電 燃料泵的磁鐵與第1筒狀軛的簡略剖視圖。 、式 弟5圖（a)至（g)係本發明第4實施型態之直流 燃料泵的磁鐵與軸承座的簡略示意圖。 為式 [元件符號說明] 2、2a 3 > 3f 4、 4a 5、 5a 6a 8 10 12 12a 20 21a 24 直流電動機式燃料泵 2b 軛 12f 4b 、 4c 、 4d 、 4e 5b第2筒狀軛 整流子 軸承 馬達部 、！2g 、 12h 、 12k 排出管 泵部 23a凹溝 排出口 、2g、2h 、2k、2 第1筒 6 電樞 7 轉軸 9 電刷 11 引線 12m > 12n 軸承座 13 止回閥 21 入口殼 22、23 出口殼 25 軸承 315499 18 200419068 26 泵輪 27 流路 28 轉軸撞止件 40 磁化裝置 40c 肋部 41 磁化力 42 磁通 50a、 50f、61k 、62m、 73h 、 73η 凸部 50e 凸形 63η、 7 1 k、72m 凹 19 315499Left and right columns, corner columns. [Possibility of industrial use J Ben ^ Ming Chuan · The self-contained magnetic circuit composed of ^ g,, ^ ^ ^ Tiandu N, it is easy to put a magnetized DC motor fuel pump with a small magnetic clothing. 315499 17 419068 [Brief description of the drawings] Fig. 1 is a cross-sectional view of a DC motor according to a first embodiment of the present invention. "(2) (a) and (b) are illustrations of the magnetization of the magnet. Fig. 3 (b) and (b) are the magnets of the DC fire pump and the vehicle of the second embodiment of the present invention. (4) (a) to (d) are schematic sectional views of the magnet and the first cylindrical yoke of the DC fuel pump of the third embodiment of the present invention. (5) (a) to (g) It is a schematic diagram of the magnet and bearing block of the DC fuel pump according to the fourth embodiment of the present invention. It is the formula [Explanation of the symbol of the element] 2, 2a 3 > 3f 4, 4a 5, 5a 6a 8 10 12 12a 20 21a 24 DC Motor-type fuel pump 2b yoke 12f 4b, 4c, 4d, 4e 5b 2nd cylindrical yoke commutator bearing motor section, 2g, 12h, 12k discharge tube pump section 23a groove discharge port, 2g, 2h, 2k, 2nd 1 cylinder 6 armature 7 rotating shaft 9 brush 11 lead 12m > 12n bearing block 13 check valve 21 inlet housing 22, 23 outlet housing 25 bearing 315499 18 200419068 26 pump impeller 27 flow path 28 rotating shaft collision stopper 40 magnetization device 40c Rib 41 Magnetizing force 42 Magnetic flux 50a, 50f, 61k, 62m, 73h, 73η Convex portion 50e Convex shape 63η, 7 1 k, 72m concave 19 315499