200842244 九、發明說明： 【發明所屬之技術領域】 特別係涉及一種應用於 本發明係涉及—種散熱風扇 電子產品上之散熱風扇。 【先前技術】200842244 IX. INSTRUCTIONS: [Technical field to which the invention pertains] In particular, the present invention relates to a cooling fan for use in a cooling fan electronic product. [Prior Art]
闲7Ό產品<功率日益提高，高功率之電子產 :口…衫可避免地要產生高溫，從㈣電子產品正常之 ^亍l成烕月因此諸多電子產品中都設有風扇以對電子 產品進行散熱㈣健電子產品之正常使用。 習知風扇結構通常包括有定子、扇輪、基座。其中定 子包3有上、下磁極片以及置於上、下磁極片之間之線圈， 扇輪之輪如緣設有磁鐵環，於輪轂巾^設有—轉轴，基 座之中央&錄套與崎，轉滅容在赌内與轴承相 樞接，疋子即固定在基座上並環設在軸套之周圍。然㈤定 子置於基座上時與轉軸及磁鐵環很難保持有較好之同心 度，從而影響定子與磁鐵環之間之磁感應配置，難以提高 風扇運轉時之穩定性及效能。另外定子之極數及相數配置 少，又不易增加，同時存在有換相角度之死點問題，使整 個散熱風扇之運轉穩定性不足。 【發明内容】 有鑒於此，有必要提供一種具有良好之同心度及運轉 穩定性之散熱風扇。 一種散熱風扇，包括基座、扇輪、磁鐵環及環形線圈 裝置，該基座上設有中空軸管，該扇輪具有輪轂及設於輪 6 200842244 秦 轂中心之轉軸，該環形線圈裝置包括定子架及繞設於定子 . 架外緣上之線圈，該定子架之内緣上環設有成對設置之複 * 數極爪片，中空轴管外周之基座上設有與中空軸管同心設 ^ 置之凸台，該環形線圈裝置套設於基座之凸台上與中空軸 管成同心配置，且該環形線圈裝置與中空轴管之間形成一 環形空間，該磁鐵環固定於轉轴上並置於所述環形空間内。 一種散熱風扇，包括基座、扇輪、磁鐵環、定子架及 繞設於定子架上之線圈，該基座上設有中空轴管，該線圈 ^ 通電產生之磁場與磁鐵環相互作用而驅動扇輪運轉，該基 座于中空轴管之外周設置有與中心軸管同心之凸台，該定 子架裝設於該凸台上，並於定子架與中空軸管之間形成一 環形空間，該磁鐵環置於所述環形空間内。 與習知散熱風扇相比，上述散熱風扇之中空轴管外周 之基座上設有同心設置之凸台，使環形線圈裝置套設於基 座之凸台上與中空軸管成同心配置，並於環形線圈裝置與 φ 中空轴管之間形成一環形空間，磁鐵環直接固定於轉軸 上，並置於中空軸管與環形線圈裝置之間形成之環形空間 内，這一特有結構能提高磁鐵環與環形線圈之同心度配 置，並使磁鐵環與環形線圈裝置内之極爪片呈精確磁感應 配置，從而可提升散熱風扇運轉之效能及穩定性。 【實施方式】 請參閱圖1及圖2,為本發明散熱風扇之第一實施例， 該散熱風扇包括基座31、環形線圈裝置32、扇輪33及磁 鐵環34。 7 200842244 士基f31呈K形’其中央向上凸設有-中空軸管3U， 空轴官311上下兩端處之内徑稍大於中空轴管犯中間 =之内經’從而在中空軸管311之兩端處各形成一個用於 置軸承312之α卩皆（未標號），轴承祀可以是滾珠或者 2及f他類型之軸承，該實施例中抽承M2為滾珠轴承。 軸s 311之外周於基座31上形成—圓環形凸台犯， 該凸台313與中空軸管311呈同心設置，即凸台313之圓Free 7 Ό products < increasing power, high-power electronic products: mouth ... shirt can avoid the need to produce high temperatures, from (4) electronic products normal ^ 亍 l into a month, so many electronic products have fans to electronic products Perform heat dissipation (4) normal use of health electronics. Conventional fan structures typically include a stator, a fan wheel, and a base. The stator package 3 has upper and lower pole pieces and a coil disposed between the upper and lower pole pieces, and the wheel of the fan wheel is provided with a magnet ring, and the hub towel is provided with a rotating shaft, the center of the base & The cover and the singer are connected to the bearing in the gambling, and the raft is fixed on the pedestal and ringed around the sleeve. However, when the stator is placed on the pedestal, it is difficult to maintain good concentricity with the rotating shaft and the magnet ring, thereby affecting the magnetic induction configuration between the stator and the magnet ring, and it is difficult to improve the stability and performance of the fan during operation. In addition, the number of poles and the number of phases of the stator is small, and it is not easy to increase. At the same time, there is a dead point problem of the commutation angle, so that the running stability of the entire cooling fan is insufficient. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a heat dissipation fan having good concentricity and operational stability. A cooling fan includes a base, a fan wheel, a magnet ring and a toroidal coil device. The base is provided with a hollow shaft tube having a hub and a rotating shaft disposed at the center of the hub of the wheel 6 200842244, the toroidal coil device includes a stator frame and a coil wound around an outer edge of the stator frame, wherein the inner ring of the stator frame is provided with a pair of multi-pole claw pieces arranged in pairs, and the base of the outer periphery of the hollow shaft tube is disposed concentrically with the hollow shaft tube a bossing device is disposed on the boss of the base and disposed concentrically with the hollow shaft tube, and an annular space is formed between the loop coil device and the hollow shaft tube, and the magnet ring is fixed at the turn The shaft is placed in the annular space. A cooling fan includes a base, a fan wheel, a magnet ring, a stator frame and a coil wound around the stator frame. The base is provided with a hollow shaft tube, and the magnetic field generated by the coil is electrically driven by the magnet ring to drive The fan wheel is operated, and the base is provided with a boss concentric with the central shaft tube on the outer circumference of the hollow shaft tube. The stator frame is mounted on the boss and forms an annular space between the stator frame and the hollow shaft tube. The magnet ring is placed in the annular space. Compared with the conventional cooling fan, the base of the outer circumference of the hollow shaft tube of the cooling fan is provided with concentrically arranged bosses, so that the toroidal coil device is sleeved on the boss of the base and is concentrically arranged with the hollow shaft tube, and An annular space is formed between the toroidal coil device and the φ hollow shaft tube, and the magnet ring is directly fixed on the rotating shaft and placed in an annular space formed between the hollow shaft tube and the toroidal coil device. This unique structure can improve the magnet ring and The concentricity of the toroidal coil arrangement and the magnetic ring of the magnet ring and the pole piece in the toroidal coil device are accurately magnetically sensed, thereby improving the efficiency and stability of the operation of the cooling fan. [Embodiment] Please refer to FIG. 1 and FIG. 2, which is a first embodiment of a heat dissipation fan according to the present invention. The heat dissipation fan includes a base 31, a toroidal coil device 32, a fan wheel 33, and a magnet ring 34. 7 200842244 Shiji f31 is K-shaped 'the center is convex upwards - hollow shaft tube 3U, the inner diameter of the upper and lower ends of the hollow shaft officer 311 is slightly larger than the hollow shaft tube is the middle of the inner diameter = thus in the hollow shaft tube 311 Each of the two ends is formed with a bearing 312 (not labeled), and the bearing 祀 can be a ball or a bearing of the type 2 and f. In this embodiment, the pumping M2 is a ball bearing. The outer circumference of the shaft s 311 is formed on the base 31 by a circular annular boss. The boss 313 is disposed concentrically with the hollow shaft tube 311, that is, the circle of the boss 313
心财空軸管311之圓心重合。中空轴管3η下端還設有 下盘335，該下蓋335抵靠在中空軸管311下端之軸承 312上並將中空軸管311之下端封閉。 衣幵人線圈衣置32可為-虹或由多組疊置岐而成一個 正體4貝％例中為上、下兩組。每—組環形線圈裝置％ 包括定子架及環向繞設於定子架外緣上之_似。定子架 之兩端向外凸伸，從而於定子架之兩個端部之間形成一個 用於繞線之開放式空間’線圈324即置於^子架外緣上之 α亥:間内。疋子架包括呈上下交錯配置形態之複數對l形 之導磁環形# 322’每-導磁環形# 322向定子架之内緣環 面彎折延伸形成極爪片321，該等極爪片奶呈等腰三角形 狀:其末端延伸至另-端之導磁環形片322處，上、下導 磁壤形片322延伸形成之極爪片321呈交替排列從而佈滿 定子架之整個内緣環面。極爪片321對應線圈324也形成 上下兩組，並壬錯位配置以增加相位磁區，從而重疊磁 區角度以排除死點。導磁環形片322可__成，且盆 極爪片奶之間之空隙由絕緣塑性材料填滿，使上下兩個 8 200842244 、、署化片322固設成一體，並形成由塑性材料製成之外 323 ’供線圈324直接繞設定位，形成所述定子架。導 片之内徑比基座31上之凸台313之外徑稍大， 攸而=使環形線圈裝置32剛好套設在基座31之凸台313 /一二/、中空轴管3U呈同心配置。由於中空轴管311之 32盥圯^圈裝置32之内徑要小，從而在環形線圈裝置 ”二軸官311之間形成一環形空間32〇。The center of the heart-filled shaft tube 311 coincides. The lower end of the hollow shaft tube 3n is further provided with a lower disc 335 which abuts against the bearing 312 at the lower end of the hollow shaft tube 311 and closes the lower end of the hollow shaft tube 311. The 幵人 coil garment set 32 can be - rainbow or a plurality of sets of stacked rafts to form a normal body 4 shells in the upper and lower groups. Each group of toroidal coil devices % includes a stator frame and a ring-like winding on the outer edge of the stator frame. Both ends of the stator frame project outwardly to form an open space for winding between the two ends of the stator frame. The coil 324 is placed in the middle of the outer edge of the subrack. The rafter includes a plurality of pairs of magnetic conductive loops 322' in an up-and-down staggered configuration. The 322's per-magnetic ring # 322 is bent toward the inner edge of the stator frame to form a pole piece 321 which is formed by the pole piece 321 The milk has an isosceles triangle shape: its end extends to the other end of the magnetically conductive annular piece 322, and the upper and lower magnetically conductive magnetic pieces 322 extend to form a pole piece 321 which is alternately arranged to cover the entire inner edge of the stator frame. Torus. The pole claw piece 321 also forms the upper and lower two groups corresponding to the coil 324, and is misaligned to increase the phase magnetic field, thereby overlapping the magnetic domain angle to eliminate the dead point. The magnetically-conductive annular piece 322 can be formed, and the gap between the pot-shaped claw pieces of milk is filled with an insulating plastic material, so that the upper and lower two 8 200842244 and the singulated piece 322 are integrally fixed and formed of a plastic material. Outside the 323' supply coil 324 is wound directly into the set position to form the stator frame. The inner diameter of the guide piece is slightly larger than the outer diameter of the boss 313 on the base 31, so that the toroidal coil device 32 is just sleeved on the boss 313 / one / two of the base 31, and the hollow shaft tube 3U is concentric Configuration. Since the inner diameter of the 32-turn ring device 32 of the hollow shaft tube 311 is small, an annular space 32 is formed between the two-axis bearings 311 of the toroidal coil device.
3幻、w ，、有一罩§又於環形線圈裝置％周緣之輪轂 说之=成3於輪毂332外緣之扇葉331及—設於輪轂 下蓋335 /、士 相接5。轉軸333之自由端抵靠在 下端之軸承3^2上—扣環334將轉軸333扣在中空軸管311 内。 上，攸而將轉輛333固定在中空軸管311 磁鐵環34是由永久磁鐵材 _ ^ ? ^ 定在扇輪33之轉車由333上，^成’亚由轉子架341固 ® 亚固疋在轉軸333之頂端，組 衣傻之磁鐵j展34置於淨带妗圃壯 間之環形介門320肉Γ 衣置32與中空轴管311之 工間320内。磁鐵環34之 磁區’並與環形線圈裝置32內〜 置有夕極對 應配置。轉子架341 上之極爪片321呈磁感 去 王Ρ ν，其直徑與磁鐵環34之内徑相 子架糾之中心處設有—直彳呈與轉轴知之直徑相 1，二1該轉子架341即通過圓孔套設固定在轉軸333 上，磁鐵被34則兔韓早梁 ^ ^ 〇 341之外緣相固接，從而使磁鐵 每34與轉轴333固定連接在—起。 便磁鐵 9 200842244 組裝時，軸承312置於基座31之中空軸管311内，環 幵久線圈裝置32套设在基座31之凸台313上，環形線圈裝 置32之下知與基座31相抵罪，環形線圈裝置％之内緣下 端與凸台313之外緣上端相抵靠，考慮到配合公差以及加 工工藝，環形線圈裝置32之内緣與凸台313之外緣會有一 定之間隙。借助轉子架341，磁鐵環34固定在扇輪33之轉 轴333上，轉轴〇33收容在基座31之中空轴管内，並3 phantom, w, and a cover § and the hub of the toroidal coil device % circumference, say that the blade 331 of the outer edge of the hub 332 and the hub 331 are disposed on the hub lower cover 335 /. The free end of the rotating shaft 333 abuts against the bearing 3^2 at the lower end - the buckle 334 fastens the rotating shaft 333 in the hollow shaft tube 311. On the upper side, the turntable 333 is fixed in the hollow shaft tube 311. The magnet ring 34 is set by the permanent magnet material _ ^ ^ ^ on the wheel of the fan wheel 33 from the 333, and the second is made of the rotor frame 341 solid ya solid 疋At the top end of the rotating shaft 333, the group of silly magnets is placed in the room 320 of the ring-shaped door 320 and the hollow shaft tube 311. The magnetic domain ' of the magnet ring 34 is disposed corresponding to the inner pole of the toroidal coil device 32. The pole piece 321 on the rotor frame 341 has a magnetic sensation to the king Ρ ν, and its diameter is located at the center of the inner diameter of the magnet ring 34. The straight 彳 is formed in the diameter of the shaft, and the diameter is 1 The rotor frame 341 is fixed on the rotating shaft 333 by a round hole, and the magnet is fixed by the outer edge of the rabbit Hanliang beam ^ 〇 341, so that the magnet 34 is fixedly connected to the rotating shaft 333. When the magnet 9 is assembled, the bearing 312 is placed in the hollow shaft tube 311 of the base 31, and the loop coil device 32 is sleeved on the boss 313 of the base 31, and the loop coil device 32 is known and the base 31. In contrast, the lower end of the inner edge of the toroidal coil device abuts the upper end of the outer edge of the boss 313, and the inner edge of the toroidal coil device 32 and the outer edge of the boss 313 have a certain gap in consideration of the fitting tolerance and the machining process. With the rotor frame 341, the magnet ring 34 is fixed to the rotating shaft 333 of the fan wheel 33, and the rotating shaft 33 is received in the hollow shaft tube of the base 31, and
用扣環334將轉軸333之自由末端扣固在中空軸管内 下端之轴承312上，且將下蓋335固定在基座31之中空軸 管311内之末端處用以承載轉轴333。同時，磁鐵環34收 容於環形線圈裝置32與中空軸管311之間形成之環形空間 320内，輪轂332則將環形線圈裝置32包容於其内。由於 凸台313之設置，使環形線圈裝置32能與中空軸管311之 同心度較高，進而使得裝配在中空軸管3n内之轉轴333 與裝配在環形空間320内之磁鐵環34能與環形線圈裝置％ 之同心度較高，使磁鐵環34與環形線圈裝置32呈較精確 之磁感應配置’從而提高風扇運料之敎性。通電時， 環形線圈裝置32產生交變磁場，並作用於磁鐵環％，從而 驅動轉轴333轉動，繼而帶動罩設於環形線圈裝置％周緣 之扇輪33旋轉。 上述散熱風扇可預先通過轉子架341將磁鐵環34固货 t扇輪表％之轉軸333上，先校準同心度，另由環形_ 套&在基座31之凸台313周圍與中空軸管311呈房 心配置形成卿空間32G，並校準m後將轉轴分 10 200842244 收^中空轴管311内，使磁鐵環34置於環形空間320内， :與!，裝置32内環面上之極爪請呈磁感應配 提供—精准度高之模組化配置組裝結構，從而提 …、風扇組裝良率及運轉之效能與穩定性。The free end of the rotating shaft 333 is fastened to the bearing 312 at the lower end of the hollow shaft tube by a retaining ring 334, and the lower cover 335 is fixed at the end of the hollow shaft 311 of the base 31 for carrying the rotating shaft 333. At the same time, the magnet ring 34 is received in an annular space 320 formed between the toroidal coil assembly 32 and the hollow shaft tube 311, and the hub 332 houses the toroidal coil assembly 32 therein. Due to the arrangement of the boss 313, the toroidal coil device 32 can be concentric with the hollow shaft tube 311, so that the rotating shaft 333 assembled in the hollow shaft tube 3n and the magnet ring 34 fitted in the annular space 320 can The concentricity of the toroidal coil device is relatively high, so that the magnet ring 34 and the toroidal coil device 32 have a more precise magnetic induction configuration', thereby improving the flexibility of the fan transport. When energized, the toroidal coil device 32 generates an alternating magnetic field and acts on the magnet ring % to drive the rotating shaft 333 to rotate, which in turn drives the fan wheel 33 disposed on the periphery of the toroidal coil device to rotate. The heat dissipating fan can pre-align the magnet ring 34 through the rotor frame 341 to the rotating shaft 333 of the fan wheel table, first aligning the concentricity, and further by the ring _ sleeve & the pedestal 31 around the boss 313 and the hollow shaft tube 311 is arranged in the center of the heart to form a 32G space, and after calibrating m, the shaft is divided into 10 200842244, and the hollow shaft tube 311 is received, so that the magnet ring 34 is placed in the annular space 320, and !, the inner ring surface of the device 32 The pole claws are provided with a magnetic induction system - a highly accurate modular configuration assembly structure to improve the efficiency and stability of the fan assembly yield and operation.
另二卜’錢熱風扇利用環形線圈裝置32之導磁環形片 ϋ疋子采之内緣環面琴折延伸而成之複數個極爪片321 ，向對稱設置，且兩組極爪片321呈相對錯位配置，使得 壞形線圈裝置32之極數與相數配置大幅增加，並重疊磁區 驗以消除磁鐵環34之轉動死角，從而可提升散熱風扇運 軺守之效忐與穩定性。同時，由於環形線圈裝置32上之定 子木可直接繞設線圈324,能達到簡化^子結構、簡化繞線 衣私、排除線圈繞設損傷與提升組裝作業良率之效果。 如圖3至圖6所示為本發明散熱風扇另一實施例。其 中圖3為该散熱風扇之组合剖示圖，圖4為該散熱風扇 之刀解剖示圖，圖5為該散熱風扇之立體組合示意圖，圖6 為该散熱風扇之立體分解示意圖。該散熱風扇之結構與上 C貝知例中之政熱風扇結構基本上一致，在此不再贅述， 不同之處是該散熱風扇有一扇框314。該扇框314整體呈方 形，其底部與基座31相連，且從基座31之底部向上延伸 擴展至扇輪33之外周。 如圖7所示為本發明散熱風扇又一實施例之分解剖示 圖。同樣該散熱風扇之結構與第一實施例中之散熱風扇結 構也大致一樣，不同之處在於該實施例中之中空轴管3iib 只在其底部設有一個台階部用以放置下蓋335。中空轴管 11 200842244 3llb内之兩個輪承咖為滑動轴承， 中空軸管3llb内之上下兩端。The other two 'money heat fan's magnetic pole piece of the toroidal coil device 32 uses a plurality of pole pieces 321 extending from the inner edge of the inner ring to extend the symmetrical arrangement, and the two sets of pole pieces 321 In a relatively misaligned configuration, the number of poles and the number of phases of the bad-shaped coil device 32 are greatly increased, and the magnetic region is overlapped to eliminate the turning dead angle of the magnet ring 34, thereby improving the efficiency and stability of the cooling fan. At the same time, since the stator wood on the toroidal coil device 32 can directly wrap the coil 324, the effect of simplifying the structure, simplifying the winding, eliminating the coil winding damage and improving the assembly work yield can be achieved. Another embodiment of the heat dissipation fan of the present invention is shown in FIGS. 3 to 6. FIG. 3 is a cross-sectional view of the heat dissipating fan, FIG. 4 is a three-dimensional exploded view of the heat dissipating fan, and FIG. 6 is a three-dimensional exploded view of the heat dissipating fan. The structure of the heat dissipating fan is basically the same as that of the hot air fan in the above example, and will not be described here. The difference is that the cooling fan has a frame 314. The sash frame 314 has a square shape as a whole, and its bottom portion is connected to the base 31 and extends upward from the bottom of the base 31 to the outer circumference of the fan wheel 33. FIG. 7 is an exploded perspective view showing still another embodiment of the heat dissipation fan of the present invention. Also, the structure of the heat radiating fan is substantially the same as that of the heat radiating fan in the first embodiment, except that the hollow shaft tube 3iib in this embodiment is provided with only a step portion at the bottom thereof for placing the lower cover 335. Hollow shaft tube 11 200842244 The two wheel bearing coffee in 3llb is a sliding bearing, and the upper and lower ends of the hollow shaft tube 3llb.
而提高風扇運轉時之效能。 ’通過過盈配合固定在Improve the performance of the fan when running. ‘ fixed by interference fit
設有一具有導磁作用之殼 322外露部分覆 一侧之激磁作用引導入導 3 21之激磁作用， _ 所4 ’本發㈣合發明專利之要件，t依法提出 專利申# 上所述者僅為本發明之較佳實施例，舉凡 ’、、、、忍本木技螫之人士，在爰依本發明精神所作之等效修飾 或變化，皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 圖1為本發明散熱風扇一實施例之組合剖示圖。 圖2為圖1之分解示意圖。 一 圖3為本發明散熱風扇另一實施例之組合剖示圖。 _ 圖4為圖3之分解示意圖。 圖5為圖3所示散熱風扇之立體組合示意圖。 圖6為圖5所示散熱風扇之立體分解示意圖。 圖7為本發明散熱風扇又一實施例之分解剖示圖。 【主要元件符號說明】 基座 31 中空轴管 311、311b 軸承 312、312b 凸台 313 扇框 314 環形線圈裝置32 環形空間 320 極爪片 321 12 200842244 導磁環形片 322 外環緣 323 線圈 324 殼座 325 扇輪 33 扇葉 331 輪轂 332 轉轴 333 扣環 334 下蓋 335 磁鐵環 34 轉子架 341 # 13The magnetic field of the exposed portion of the shell 322 having a magnetically conductive effect is guided by the excitation action of the guide member 3 21 , and the requirements of the invention patent are hereinafter referred to as the patent application. In the preferred embodiment of the present invention, equivalent modifications or variations of the person skilled in the art of the present invention are to be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view showing a combination of an embodiment of a cooling fan of the present invention. Figure 2 is an exploded perspective view of Figure 1. FIG. 3 is a combined cross-sectional view showing another embodiment of the heat dissipation fan of the present invention. _ Figure 4 is an exploded view of Figure 3. FIG. 5 is a schematic perspective view of the heat dissipation fan of FIG. 3 . FIG. 6 is a perspective exploded view of the heat dissipation fan shown in FIG. 5. FIG. 7 is an exploded perspective view showing still another embodiment of the heat dissipation fan of the present invention. [Main component symbol description] Base 31 hollow shaft tube 311, 311b bearing 312, 312b boss 313 fan frame 314 loop coil device 32 annular space 320 pole claw piece 321 12 200842244 magnetic ring piece 322 outer ring edge 323 coil 324 case Block 325 Fan wheel 33 Fan blade 331 Hub 332 Rotary shaft 333 Buckle 334 Lower cover 335 Magnet ring 34 Rotor frame 341 # 13