1238587 (1) 玖、發明說明 【發明所屬之技術領域】 本發明’係關於用於電子零件等的冷卻之風扇馬達。 【先前技術】 在筆記型個人電腦，數位攝錄影機，p D A等各種小型 電器的冷卻已被使用風扇馬達，而被進行各種提案（例如 ，專利文獻1至3 )。在如此的風扇馬達中，特別在已往之 軸流型風扇馬達，通常係在著裝磁鐵的後軛一體加工發生 氣流之多數葉片。以下，關於已往的軸流型風扇馬達之轉 子的構造參照圖3予以說明。圖3 (a)，係顯示被安裝旋轉 葉片101的已往之轉子100的構造之斷面圖，（b)爲圖3(a)的 平面視圖，（c)爲將旋轉葉片1〇1之葉片部101b展開的圖。 轉子100，係由圓板狀之永久磁鐵而成。旋轉葉片1〇1 ，係將一張金屬板加工者，具有固定轉子丨〇〇的後軛部 1 0 1 a、和在後軛部1 〇 1 a之周緣被一體地連接的葉片部丨〇 ! b ，在其中央部被設之孔l〇lc將嵌合軸102。葉片部101b， 將從圖3(c)顯示的狀態對後軛101a被扭轉約90度，並且， 在同圖所示之虛線被稍折曲而形成。 [專利文獻1]日本特開平1 0-336953號公報 [專利文獻2]日本特開平π-8951號公報 [專利文獻3]日本特開平1卜8962號公報 【發明內容】 [發明所要解決之課題] 可是’在上述已往的風扇馬達，因在後軛之外周被配 -5- 1238587 (2) 設葉片，故葉片的大小被限制在磁鐵和外殼之間的 因此，在葉片之大型化有界限’無法得到充份的風 爲風扇馬達難以提高重要的特性之風量-靜壓特性。 因此，本發明目的’係在提供能夠得到更大的 風扇馬達。 [用以解決課題之手段] 根據本發明時，係針對具備有安裝旋轉葉片的 旋轉力加勢於該轉子之定子的風扇馬達，前述旋轉 具有從前述旋轉葉片之中心部放射狀地延伸，且將 轉葉片固定在前述轉子用的多數之固定部、及在各 述固定部之側部將被一體地連接同時向前述固定部 延在，且在前述固定部之前述側部被曲折的多數之 的，一張金屬板而成爲特徵之風扇馬達將被提供。 在本發明，亦可構成：前述轉子係具備有環狀 磁鐵、及在該永久磁鐵上面被安裝之後軛；前述定 磁力對前述轉子加勢旋轉力者；前述旋轉葉片，係 在前述後軛上面。 【實施方式】 [發明之實施形態] 以下，關於本發明的理想之實施形態，參照圖 說明。圖1，係關於本發明的一實施形態之軸流型 馬達A之斷面構造圖。風扇馬達A，係備有轉子1 0 轉子1 0由磁力使旋轉力加勢的定子20。 空間。 量，做 風量之 轉子將 葉片， 前述旋 別的前 的外方 葉片部 的永久 子係由 被固定 面予以 的風扇 ，和對 1238587 (3) 轉子1 Ο ’係由狀（圓板狀）之永久磁鐵11，和被固定 永久磁鐵1 1的後軛1 2而成。在後軛1 2，被安裝有旋轉葉片 13，旋轉葉片13係嵌合在軸14之上端部。然後，由附隨轉 子10的旋轉之旋轉葉片13的旋轉，在軸14之軸方向使氣流 產生。 定子20，係由被捲繞在軸1 4周圍的線圈所成之電樞， 在中央被設防止與軸14干擾的孔之基台30上，與永久磁鐵 1 4以微小的空隙對向之位置被固定。定子2 0，將由電流的 通電產生磁場，由該磁場對永久磁鐵11作用，將使轉子1 〇 被加勢旋轉力。 在基台30之中央部，被立設有圓筒狀的支持體31，在 該支持體3 1之內部，被設有支持軸1 4的軸承3 2。由該構成 ，使軸1 4被支持成自由旋轉，轉子1 〇將能自由地旋轉。 接著，就對於轉子10的旋轉葉片13之安裝構造，參照 圖1及圖2說明。圖2(a)，係被安裝旋轉葉片13的轉子10之 平面視圖，（b)係旋轉葉片13的平面視圖，（c)爲後軛12之 平面視圖’（d)爲將旋轉葉片13的葉片部13b展開之圖。 旋轉葉片13，有將旋轉葉片13固定在後軛12用的孔 1 3a，具有從旋轉葉片1 3之中心部放射狀地延伸的多數之 固定部1 3b ’和將在各固定部1 3b的側部被一體地連接，同 時向固定部13b之半徑方向外方延在的多數之葉片部13c， 和在旋轉葉片1 3的中心部突起之凸部1 3d，從一張金屬板 經銜模，沖壓加工，曲折等處理而被作成者。並且，如圖 2 (d)所示，在旋轉葉片1 3的中心，被設有孔1 3 e，在此將嵌 1238587 (4) 合軸1 4之上端部。 後軛1 2，係有加強由永久磁鐵1 1的磁通之作用者’例 如，由鐵等而成，在中央被設有孔1 2a，成爲在下面內側 有被著裝永久磁鐵1 1的空間之圓盤狀，在其上面’被設有 多數的環狀之突起12b。然後，將該環狀的突起12b***在 旋轉葉片13之固定部13b被設的孔13a，由於如圖1所示地 把突起12b鉚合，而旋轉葉片13將被固定在後軛12。 此時，在本實施形態，係如圖2(d)所示，旋轉葉片13 的葉片部1 3c，係被連接在固定部1 3b之側部，在其境界（ 圖2(d)所示的略向半徑方向之虛線），對固定部13b被曲折 略90度而被形成。此時，如圖1所示，在圖2(d)，葉片部 1 3 c中位於固定部1 3b的側方之部份，使之向固定部1 3b的 上方地被配設，構成使氣流產生的葉片之一部份。 如此地使葉片部1 3c，包含位於比後軛1 2上方的部份 而構成，將比如過去將葉片部配設在後軛之外周，即使同 樣大小的風扇馬達，也能使葉片部1 3 c大型化。更且，能 將軸1 4的中心附近之空氣取入風扇馬達A內，能夠得到更 大的風量，提高風量-靜壓特性。更且，在旋轉葉片1 3被 要求薄形化時’能由將旋轉葉片1 3由金屬板構成，比樹脂 成形時，能謀求提高加工之容易性及強度，進而實現低成 本化。 [發明之效果] 如以上所述，根據本發明時，將被提供能得到更大風 -8- 1238587 (5) 量的風扇馬達。 [圖式簡單說明】 [圖1] 係關於本發明的一實施形態之軸流型風扇馬達A的斷 面構造圖。 [圖2] U)係被安裝旋轉葉片13的轉子1〇之平面視圖，（b)係 旋轉葉片13的平面視圖，（c)爲後軛12之平面視圖’（d)爲 將旋轉葉片13的葉片部13b展開之圖。 [圖3] U)係顯示被安裝旋轉葉片101的以往之轉子1〇0的構 造之斷面圖，（b)爲圖3(a)的平面視圖’（C)爲將轉葉片 101的葉片部l〇lb展開之圖。 [圖號說明] 1 0 0 :轉子 1 0 1 :旋轉葉片 1 0 1 a :後軛部 1 0 1 b :葉片部 A :風扇馬達 1 0 :轉子 1 1 :永久磁鐵 1 2 :後軛 -9 - 1238587 (6) 14 :軸 20 :定子 3 0 :基台 3 1 :支持體 1 3 :旋轉葉片 1 3 b :固定部 1 3 d :凸部 1 3 e :孑L 1 2 b :突起 1 3 c :葉片部1238587 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention 'relates to a fan motor for cooling electronic parts and the like. [Prior Art] Various motors have been used for cooling various small appliances such as notebook personal computers, digital video cameras, and p D A (for example, Patent Documents 1 to 3). Among such fan motors, especially in the past, the axial-flow type fan motors are usually manufactured by integrally processing a plurality of blades that generate an air current on a yoke on which a magnet is mounted. Hereinafter, the structure of the rotor of the conventional axial fan motor will be described with reference to FIG. 3. FIG. 3 (a) is a sectional view showing the structure of the previous rotor 100 to which the rotating blade 101 is installed, (b) is a plan view of FIG. 3 (a), and (c) is a blade of the rotating blade 101 The expanded view of the part 101b. The rotor 100 is made of a disc-shaped permanent magnet. The rotating blade 1101 is a sheet metal worker who has a rear yoke portion 1 0a that fixes the rotor and a blade portion that is integrally connected to the periphery of the rear yoke portion 10a. b, the hole 102c provided in the center portion will fit the shaft 102. The blade portion 101b is twisted about 90 degrees from the state shown in FIG. 3 (c) to the yoke 101a, and is formed by slightly bending the dotted line shown in the same figure. [Patent Document 1] Japanese Patent Application Laid-Open No. 0-336953 [Patent Literature 2] Japanese Patent Application Laid-Open No. π-8951 [Patent Literature 3] Japanese Patent Application Laid-Open No. 1-8962 [Content of the Invention] [Questions to be Solved by the Invention ] However, in the above-mentioned conventional fan motor, since the outer periphery of the yoke is equipped with a -5- 1238587 (2) blades are provided, the size of the blades is limited between the magnet and the housing. Therefore, there is a limit in the size of the blades. 'Unable to obtain sufficient wind is an air flow-static pressure characteristic that is difficult to improve an important characteristic of a fan motor. Therefore, the object of the present invention is to provide a larger fan motor. [Means for Solving the Problems] According to the present invention, a fan motor having a stator provided with a rotating force to which a rotating blade is attached to the rotor is provided. The rotation has a radial extension from a center portion of the rotating blade, and The rotor blades are fixed to the majority of the fixing portions for the rotor, and the side portions of the fixing portions are integrally connected while extending to the fixing portion, and the majority of the majority of the side portions of the fixing portion are bent. A fan motor featuring a metal plate will be provided. In the present invention, the rotor system may include a ring magnet and a yoke after being mounted on the permanent magnet; the fixed magnetic force may exert a rotational force on the rotor; and the rotating blade may be provided on the rear yoke. [Embodiment] [Embodiment of the invention] Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a sectional structural view of an axial flow motor A according to an embodiment of the present invention. The fan motor A is provided with a rotor 10, and the rotor 10 is a stator 20 in which a rotational force is increased by a magnetic force. space. The amount of air volume of the rotor will be the blade, the permanent sub-blades of the outer front part of the above-mentioned rotating fan are provided by the fixed surface, and the 1238587 (3) rotor 1 〇 'is formed by the shape of a circular plate The permanent magnet 11 is formed by a back yoke 12 to which the permanent magnet 11 is fixed. A rotary blade 13 is attached to the rear yoke 12, and the rotary blade 13 is fitted to an end portion above the shaft 14. Then, by the rotation of the rotating blade 13 accompanying the rotation of the rotor 10, an air flow is generated in the axial direction of the shaft 14. The stator 20 is an armature formed by a coil wound around the shaft 14, and a base 30 provided with a hole for preventing interference with the shaft 14 in the center, and faces the permanent magnet 14 with a small gap. The position is fixed. In the stator 20, a magnetic field is generated by the application of current, and the magnetic field acts on the permanent magnet 11 to cause the rotor 10 to be subjected to a rotational force. A cylindrical support body 31 is erected at the center of the base 30, and a bearing 32 for supporting the shaft 14 is provided inside the support body 31. With this configuration, the shaft 14 is supported to rotate freely, and the rotor 10 can rotate freely. Next, the mounting structure of the rotor blades 13 of the rotor 10 will be described with reference to Figs. 1 and 2. Fig. 2 (a) is a plan view of the rotor 10 to which the rotating blade 13 is installed, (b) is a plan view of the rotating blade 13, and (c) is a plan view of the yoke 12 ' The blade part 13b is expanded. The rotating blade 13 has a hole 13a for fixing the rotating blade 13 to the rear yoke 12, and has a plurality of fixing portions 13b 'extending radially from a center portion of the rotating blade 13 and a plurality of fixing portions 13b. The side portions are integrally connected, and at the same time, the majority of the blade portions 13c extending outward in the radial direction of the fixed portion 13b and the convex portions 13d protruding at the center portion of the rotating blade 13 are passed from a metal plate through the armature. , Stamping, zigzag processing and so on. Further, as shown in FIG. 2 (d), a hole 1 3e is provided in the center of the rotating blade 13, and an upper end portion of the coupling shaft 14 is fitted in 1238587 (4). The back yoke 12 is used to strengthen the magnetic flux of the permanent magnet 1 1 'for example, it is made of iron or the like, and a hole 12a is provided in the center to form a space for the permanent magnet 1 1 to be worn on the inner side of the lower surface. In the shape of a disk, a large number of annular protrusions 12b are provided on the upper surface. Then, the ring-shaped protrusion 12b is inserted into the hole 13a provided in the fixing portion 13b of the rotary blade 13, and the rotary blade 13 is fixed to the rear yoke 12 by caulking the protrusion 12b as shown in FIG. At this time, in this embodiment, as shown in FIG. 2 (d), the blade portion 13c of the rotating blade 13 is connected to the side portion of the fixed portion 13b, and in its realm (shown in FIG. 2 (d)) (A dashed line in a slightly radial direction), and the fixed portion 13b is formed by being twisted at approximately 90 degrees. At this time, as shown in FIG. 1, in FIG. 2 (d), the part of the blade part 1 3 c located on the side of the fixed part 1 3 b is arranged above the fixed part 1 3 b so as to constitute Part of the blades produced by the airflow. In this way, the blade portion 1 3c is configured to include a portion above the back yoke 12. By arranging the blade portion on the outer periphery of the yoke in the past, even the fan motor of the same size can make the blade portion 1 3 c large-scale. Furthermore, the air near the center of the shaft 14 can be taken into the fan motor A, so that a larger air volume can be obtained, and the air volume-static pressure characteristic can be improved. Furthermore, when the thickness of the rotating blades 13 is required to be reduced, it is possible to form the rotating blades 13 from a metal plate, and it is possible to improve the ease and strength of processing and reduce the cost compared to the case of resin molding. [Effects of the Invention] As described above, according to the present invention, a fan motor capable of obtaining a larger amount of wind -8-1238587 (5) will be provided. [Brief description of the drawings] [FIG. 1] A sectional structural view of an axial flow fan motor A according to an embodiment of the present invention. [Fig. 2] U) is a plan view of the rotor 10 to which the rotating blade 13 is installed, (b) is a plan view of the rotating blade 13, and (c) is a plan view of the yoke 12 '(d) is a rotating blade 13 Expansion view of the blade portion 13b. [FIG. 3] U) is a cross-sectional view showing the structure of a conventional rotor 100 in which a rotating blade 101 is mounted, (b) is a plan view of FIG. 3 (a), and (C) is a blade of the rotating blade 101. Figure of the 10 lb expansion. [Illustration of drawing number] 1 0 0: rotor 1 0 1: rotating blade 1 0 1 a: rear yoke portion 1 0 1 b: blade portion A: fan motor 1 0: rotor 1 1: permanent magnet 1 2: rear yoke- 9-1238587 (6) 14: Shaft 20: Stator 3 0: Abutment 3 1: Support 1 3: Rotating blade 1 3 b: Fixed part 1 3 d: Convex part 1 3 e: 孑 L 1 2 b: Protrusion 1 3 c: blade part