201041491 六、發明說明： 【發明所Λ之技術領域】 本發明係’-種散熱風扇，尤其是—種可減少整 體軸向南度及縮減體積的微型散熱風扇。 【先前技術】 現今電子產品普遍已朝向微型化趨勢等方向研發設 計，惟就目前市面上常見之散熱風扇而言，大致包含有扇 框、定子及扇輪等構件，其中定子一般係由定子鐵心、線 圈組及電路板所構成；因此，受限於該定子鐵心、線圈組 及電路板（含驅動電路）共同結合所形成的結構，將造成 習知散熱風扇難以再進一步縮減整體軸向高度，亦相對限 縮習知散熱風扇設計成更輕薄短小化的可行性，導致習知 散熱風扇難以安裝於微小型之電子裝置或電子儀器。 為此即有相關業者嘗試縮減f知定子之軸向高度及 體積，以便有效縮減習知散熱風扇之整體轴向高度，然而 ，其成效仍不顯著。如第1®所示，係為中華民國公告第 M291〇24號「散熱風扇」新型專利，該習知散熱風扇8〇 具有一外殼8卜一控制單元82、-定子83及一扇輪單元 84。該外殼81設有-固定座811及一支撐轴管812 :該 控制單元82具有形成在該固定座811表面上的控制電路 板821 ’該定子83環設於該支樓轴管812外侧並與該控 制電路板821電性連接；該扇輪單元84可轉動地設於該 支撐轴管812上。藉此，該習知散熱風扇8〇讀過該控 制單兀82之控制電路板821形成於該外殼81之固定座 201041491 m表面上:用以達到降低細向高度之目的。 接整二知散熱風扇80雖將該控制電路板821直 具有、驅動電路，之惟該控制電路板821表面 ^^ β 〇ΐ’而一般驅動電路係包含有數個 Ο201041491 VI. Description of the Invention: [Technical Field of the Invention] The present invention is a type of heat-dissipating fan, in particular, a micro-cooling fan which can reduce the overall axial southness and reduce the volume. [Prior Art] Today's electronic products have generally been developed in the direction of miniaturization trends. However, in the current common cooling fans on the market, they generally include components such as a fan frame, a stator and a fan wheel. The stator is generally composed of a stator core. The coil assembly and the circuit board are formed; therefore, limited by the structure formed by the combination of the stator core, the coil group and the circuit board (including the driving circuit), it is difficult for the conventional cooling fan to further reduce the overall axial height. It is also known that the heat-dissipating fan is designed to be lighter, thinner and shorter, which makes it difficult for conventional cooling fans to be mounted on micro-electronic devices or electronic instruments. To this end, relevant companies have attempted to reduce the axial height and volume of the stator to effectively reduce the overall axial height of the conventional cooling fan. However, the effect is still not significant. As shown in the 1st, it is a new patent of the "Relay Fan" of the Republic of China Announcement No. M291〇24. The conventional cooling fan 8 has a casing 8 a control unit 82, a stator 83 and a fan wheel unit 84. . The housing 81 is provided with a fixing base 811 and a supporting shaft tube 812: the control unit 82 has a control circuit board 821 formed on the surface of the fixing base 811. The stator 83 is disposed outside the branch shaft tube 812 and is The control circuit board 821 is electrically connected; the fan wheel unit 84 is rotatably disposed on the support shaft tube 812. Therefore, the control circuit board 821 of the conventional heat dissipation fan 8 that has read the control unit 82 is formed on the surface of the housing 201041491 m of the housing 81 for the purpose of reducing the height of the thin beam. Although the control circuit board 821 has a driving circuit, the surface of the control circuit board 821 is ^^β 〇ΐ', and the general driving circuit system includes several Ο.
致兮限於各該電子元件本身所具有的高度，亦導 :疋—11仍具有一定之輛向高度；另外由於該外 、之固定座811必須提供該控制電路板821進行結合 ，成該収81之結構較為複雜；再者，該f知散熱 風、二〇之定子83仍具有如定子鐵心等構件，因此，結合 有該疋子83之散熱風扇8Q的轴向高度仍無法進—步縮減 整體而a ’習知散熱風扇8〇雖藉由將該控制電路板 821形成於該固定座811表面，以期縮減其轴向高度，但 成效仍相當有限。 又’明參照第2及3圖所示，係為中國公開第 2〇〇6Η)072272·8號「薄型散熱機構」發明專利，該另一種 習知散熱風扇90係包含一框體％，該框體91具有一容 置空間9U ’該容置空間911内具有一基座912，該基座 912可供設置一電路板92及一線圈93，且該基座912中 央突設-轴管913，該軸管913可供-轉子94結合於該 框體91之容置空間911 .藉此，該習知散熱風扇9〇可省 略如傳統定子鐵心等構件，用以降低轴向高度。 然而’由於該習知散熱風扇90之電路板92同樣且 有"驅動電路〃之設計，在受限於各該電子元件本身所具 有之高度的條件下’亦造成該電路板92仍具有一定之轴 向高度，當該電路板92組裝於該框體91之基座912時， 201041491 仍會導致該習知散熱風扇90之軸向高度無法進一步縮減 ;再者’該習知散熱風扇90雖然將該線圈93予以整合於 該電路板92表面，惟該線圈93係凸出設置於該電路板 92之表面’導致該線圈93及該電路板92兩者仍共同形 成一定之轴向高度，因此，亦相對限縮習知散熱風扇9〇 設計成更輕薄短小化的可行性’而難以安裝於微小型之電 子裝置或電子儀器，故有加以改善之必要。 【發明内容】 本發明係提供一種散熱風扇，用以解決前述各習知 散熱風扇不易朝向微型化方向設計之問題，為主要之發明 目的。 種散熱風扇，包含一軸座、一線圈基板及一扇 輪。該轴座與該線圈基板結合；該線圈基板具有一基板部 及一線圈組，該基板部一體結合該線圈組，且該基板部設 有與該線圈組電性連接的一驅動電源連接埠；該扇輪包含 一輪轂及一永久磁鐵，該輪轂設有一中心軸，該中心轴結 合該轴座之樞接部，該永久磁鐵結合該輪轂並與該線圈組 相對，且該永久磁鐵與該線圈組之間具有一氣隙。藉此， 該驅動電源連接埠可透過一接線供一驅動電路電性連接， 使該驅動電路位於該氣隙之外’雜該線圈基板未設有該 驅動電路的數個電子元件，以達到減少轴向高度及精簡綠 構複雜度等諸多功效。 所述軸座具有一固定部及一樞接部，該樞接部設於 該固定部之一側，該中心轴結合該軸座之樞接部，該線圈 201041491 基板之基板部具有一表層，該線圈組形成於該表層之—侧 面，該線圈組位於該表層與該轴座的固定部之間。藉此， 當該線圈組一體結合該基板部時，可砵實將該線圈組整合 於該表層之一側面，以達到更進一步減少軸向高度之功 效0 所述線圈基板之基板部具有相對之一表層及_底 層，該線圈組位於該表層及該底層之間。藉此，當該線圈 組一體結合該基板部時，可確實將該線圈組整合於該表層 與該底層之間，同樣可達到更進一步減少轴向高度之功 效。 所述扇輪另包含一外環部，該外環部環繞結合該輪 較’該外環部與該輪轂之間形成一進風口及一出風口。藉 此，可利用較為精簡之結構設計’以達到導引氣流行進方 向之功效。 所述軸座另結合一扇框，該扇框具有一容置空間， 該谷置空間内設有一承載部，該承載部結合該轴座，且該 扇框設有一進風口及一出風口，該進風口及該出風口連通 該容置空間。藉此，可達到導引氣流及提升驅風效果等功 效。 所述線圈基板另結合一框體，該框體具有一容置空 間，該線圈基板位於該容置空間内，且該線圈基板與該框 體之間結合數個連接件，該框體另設有一進風口及一出風 口，該進風口及該出風口連通該容置空間。藉此，同樣可 用以導引氣流及提升驅風效果，並兼具省略構件以精簡結 構複雜度之功效。 201041491 扇忙成框體相具有供該接線穿伸的-缺槽， 該缺槽連通該容署办„ _ 塊壓抵該接線。藉茈，^ 现泛疋位 了達到疋位該接線及防止外力不去 拉扯該接線等功效。 r刀个田 【實施方式】 為讓本發明之上述及其他目的、特徵及優點能更明 顯易懂’下文特舉本發明之較佳實闕，並 式，作詳細說明如下： 圖 請參照第4及5圖所示，本發明散熱風扇至少包含 一軸座10、一線圈基板20及一扇輪30。 該軸座10具有一固定部11及一樞接部12。該固定 部11可供該軸座10用以直接結合於各式電子裝置、電子 儀器或其他必須進行散熱之物品的預定部位，或者，該固 疋部11亦可供該軸座1〇結合一扇框（未繪示）；該樞接 部12設於該固定部11之一側，以供該扇輪30可旋轉地 結合該轴座10。 該線圈基板20結合該軸座10，且該線圈基板20具 有一基板部21及一線圈組22。該基板部21較佳選自一 印刷電路板；該線圈組22可利用佈線方式（layout)或其 他適當方式與該基板部21整合為一體，使該線圈組22不 至於凸出於該線圈基板20之表面，以便有效減少該線圈 基板20之整體軸向高度。另外，該基板部21設有一驅動 電源連接埠23，該驅動電源連接埠23與該線圈組22電 f生連接。其中該驅動電源連接璋23可如第4圖所示直接 201041491 . · 設於該基板部21上；或如第6圖所示，亦可於該基板部 21外周緣形成一凸部（未標示），以便將該驅動電源連接 埠23直接設於該凸部。 該線圈基板20之基板部21較佳具有一表層211，該 表層211 了為形成於該基板部21表面的一絕緣層（未標 示）；又，該基板部21較佳另具有一底層212，該底層 212與該表層211相對，而該底層212亦可為形成於該基 板部21表面的一絕緣層（未標示）’使該線圈基板20具 〇 有絕緣功能，且該基板部21之底層212可貼接該輛座10 之固定部11。另外，該基板部21之表層211的一側面可 形成該線圈組22，令該線圈組22可位於該表層211盥該 軸座ίο之固定部u之間；或者，當該基板部21具^該 底層212時，該線圈組22較佳位於該基板部21的表層 211及底層212之間。 該扇輪3〇包含一輪轂^及一永久磁鐵…該輪較 ❹ 31設有一中心軸31卜該甲心軸311與該轴座10之樞接 部12可旋轉地結合；該永久磁鐵％結合該輪較w，且 該永久磁鐵32與該線_ 22相對，且該永久磁鐵％與 ,該_組22之間在該扇輪3G之㈣上具有—氣隙（未標 示）。 本發明散熱風扇實際使用時，該線圈基板20之驅動 ，源連接埠23可供-驅動電路4〇電性連接，其中該驅動 電源連接埠23可供-接線％之1連接，該接線％之 另一端則連接該驅動電路40，藉此，該驅動電路4〇可透 過該驅動電源連接埠23之結構設計，間接與該線圈組22 201041491 呈電性連接狀態，用以致動該線圈組22，使該線圈組22 與該永久磁鐵32之間產生磁交鏈作用，進而帶動該扇輪 30旋轉作動，以提供一預定散熱作用。 藉由前揭之結構特徵，本發明散熱風扇的主要特點 至少包含有： 利用該線圈基板20之驅動電源連接埠23的結構設 計，該線圈基板20之表面並未設有該驅動電路4〇 ,使該 線圈基板20與該驅動電路4〇可為分離式結構設計，兩者 之間僅透過該接線50相互連接，令該驅動電路4〇可位於 該永久磁鐵32與該線圈組22之間所形成的氣隙之外；換 &之，該線圈基板20並未設有該驅動電路4〇的數個電子 元件，以便有效減少該線圈基板20之轴向高度。藉此， 如第5圖所示，在該扇輪30之軸向上，更可確保該驅動 電路40不會位於該轴座10、線圈基板2〇及扇輪3〇之間 ，以有效減少本發明散熱風扇之整體轴向高度，並兼具有 精簡結構複雜度及提供組裝便利性等優點。 再者，藉由該線圈組22形成於該基板部21之表層 211之一侧面（較佳係位於該表層211及該底層212之間 )的結構設計，使該線圈組22可被整合於該線圈基板2〇 内部’進而確保該線圈、组22不至於凸出該線圈基板2〇的 表面’藉此可使該扇輪30與該線圈基板2〇的表層211之 間無任何線圈結構設計，且在該線圈組22以佈線方式而 被整合於該線圈基板20内部的條件下，仍不至於過1增 加該線圈基板20的軸向高度，亦即相對可減少本發明散 熱風扇之整體軸向高度。 201041491 : 整體而言，當該線圈基板20在配合該軸座1〇及該 扇輪30構成本發明散熱風扇時，由於該驅動電路牝的= 個電子元件並未結合於該線圈基板20上，因此，更可相 對縮減本發明散熱風扇之整體抽向高度及體積；另外、, 若搭配該線圈組22形成於該基板部21之表層211 一側^ 的設計，則具有更進一步減少轴向高度之優點，以便 明散熱風扇可朝向更輕薄短小化的方向研發設計。 藉由上述本發明散熱風扇之結構設計概念，本發明 散熱風扇亦可進一步變化出如下所述之其他附屬結構特徵 ，使本發明散熱風扇之功能更趨近於完善，其中： 請參照第4及5圖所示，該扇輪30較佳另包含一外 環部33，該外環部33環繞結合該輪毅31，使該外環部 33與該輪轂31之間可形成一進風口 331及一出風口 332 :藉此，當該扇輪30旋轉作動時，即可自該進風口 331 引入虱流，並利用該扇輪30之輪穀31進一步驅動該氣流 Q 經由該出風口 332流動至預定部位，以便導引氣流行進方1 向，並兼可提升整體驅風效果。 請參照第6及7圖所示，該軸座1〇較佳另結合一扇 , 框6〇，該扇框60具有一容置空間61，該容置空間61内 設有一承載部62，該承載部62用以結合該轴座1〇 ;又， 該扇框60設有一進風口 63及一出風口 64，該進風口 63 及該出風口 64皆連通該容置空間61。另外，該扇框60 可依實際需求而選自轴流式風扇之扇框或鼓風式風扇之扇 框，如圖所示之實施例，係揭示該扇框6〇為一轴流式風 扇之扇框。藉此，本發明散熱風扇可較為便利地透過該扇 201041491 =〇:結合於各式電子裝置、電子儀器或其他必卿-散熱之物品的預定部位，以提升使用便利性;另=仃 樣可利用該扇框60達到導引氣流及提升驅風效果等優= 明t、第8及9圖所示’該線圈基板2 成型或為可拆裝之設計），該框^ 、 該線圈基板20位於該容置空間 内’且該_基板2G與該框體％之間可彻數 N予以=合’她個連接件72可為雜紐葉^ 出Γ設有一進風口73及一出風口74，該進風口 板2〇可直接取代如第6圖所示之承載部62,因此，2 施例相較於如第6圖所示之實施例，可進-步減少軸^ 度’並可省略構相精㈣體結構複雜度。 請參照第6及8圖所示，該扇框60或該框體70較 佳分別具有-缺槽65、75，該缺槽65、75連通該容置空 間61: 7卜且該缺槽65、75各可供一定位塊的、％ : 合，藉此，當該接線50之一端結合該線圈基板2〇之驅動 電源連接埠23後’另—端可穿伸該缺槽65、75至該扇框 60或該框體70外部，以便連接該驅動電路4〇 ;此時該 疋位塊66、76可結合該缺槽65、75，再利用該定位塊66 、76壓抵該接線50，用以達到定位該接線50及防止外力 不當拉扯該接線5〇等優點。 如上所述’本發明散熱風扇確實可藉由該線圈基板 20之驅動電源連料23設計，使該線圈基板2()之表面 j12 — 201041491 : 未設有該驅動電路4〇的數個電子元件；更佳亦可搭配該 線圈基板20之線圈組22位於該基板部21之表層二 侧面（較佳係位於該表層211及該底層212之間）的結構 設計，以有效減少本發明散熱風扇之轴向高度，且相對亦 可縮減本發明散熱風扇之整體體積，進而達到便於朝向微 • 型化方向研發設計的功能。 . 雖然本發明已利用上述較佳實施例揭示，然其並非 用以限定本發明，任何熟習此技藝者在不脫離本發明之精 ° 神和範圍之内，相對上述實施觸行各種更動與修改仍屬 本發明所保護之技術範疇，因此本發明之保護範圍當視後 附之申請專利範圍所界定者為準。 【囷式簡單說明】 第1圖.習知第一種散熱風扇之立體分解圖。 第2圖：習知第二種散熱風扇之立體分解圖。 第3圖：習知第二種散熱風扇之組合剖視圖。 〇 第4圖：本發明散熱風扇之立體分解圖。 第5圖：本發明散熱風扇之組合剖視圖。 第6圖：本發明散熱風扇結合扇框時的立體分解圖。 • 第7圖：本發明散熱風扇結合扇框時的組合剖視圖。 第8圖：本發明散熱風扇結合樞體時的立體分解圖。 第9圖··本發明散熱風扇結合框體時的組合剖視圖。 【主要元件符號說明】 〔本發明〕 —13 — 201041491 10 軸座 11 固定部 12 栖接部 20 線圈基板 21 基板部 211 表層 212底層 22 線圈組 23 驅動電源連接埠 30 扇輪 31 輪轂 311 中心軸 32 永久磁鐵 33 外環部 331 進風口 332 出風口 40 驅動電路 50 接線 60 扇框 61 容置空間 62 承載部 63 進風口 64 出風口 65 缺槽 66 定位塊 70 框體 71 容置空間 72 連接件 73 進風口 74 出風口 75 缺槽 76 定位塊 〔習知〕 80 散熱風扇 81 外殼 811 固定座 812 支撐軸管 82 控制單元 821 控制電路板 83 定子 —14 — 201041491 84 扇輪單元 90 散熱風扇 容置空間 轴管 線圈 91框體 911 912基座 913 92 電路板 93 94 轉子 〇The enthalpy is limited to the height of each of the electronic components, and the 疋-11 still has a certain vehicle height; in addition, since the outer 811 has to provide the control circuit board 821 for bonding, it is 81 The structure is more complicated; furthermore, the stator 83 of the heat dissipation wind and the second stator still has components such as a stator core, and therefore, the axial height of the heat dissipation fan 8Q combined with the die 83 cannot be further reduced. However, the conventional heat dissipating fan 8 is formed on the surface of the fixing base 811 by the control circuit board 821 in order to reduce the axial height thereof, but the effect is still quite limited. In addition, as shown in the second and third figures, the invention is a patent for the "slim heat dissipating mechanism" of No. 072272, No. 072272, which contains a frame %. The housing 91 has an accommodating space 9U. The accommodating space 911 has a base 912. The base 912 can be provided with a circuit board 92 and a coil 93. The base 912 protrudes from the center of the shaft 913. The shaft tube 913 can be coupled to the accommodating space 911 of the frame 91. Thereby, the conventional heat dissipating fan 9 can omit components such as a conventional stator core to reduce the axial height. However, since the circuit board 92 of the conventional heat dissipating fan 90 has the same design of the driving circuit, the circuit board 92 still has a certain condition under the condition that the height of each electronic component itself is limited. When the circuit board 92 is assembled to the base 912 of the frame 91, 201041491 still causes the axial height of the conventional cooling fan 90 to be further reduced; The coil 93 is integrated on the surface of the circuit board 92, but the coil 93 is convexly disposed on the surface of the circuit board 92, so that the coil 93 and the circuit board 92 still form a certain axial height together, so It is also relatively limited to know that the cooling fan 9〇 is designed to be lighter and thinner and shorter, and it is difficult to install it on a small electronic device or electronic device, so it is necessary to improve it. SUMMARY OF THE INVENTION The present invention provides a heat dissipating fan for solving the above-mentioned problems that the conventional heat dissipating fan is not easily designed toward the miniaturization direction, and is a main object of the invention. The cooling fan comprises a shaft seat, a coil substrate and a wheel. The shaft base is coupled to the coil substrate; the coil substrate has a substrate portion and a coil assembly, the substrate portion is integrally coupled to the coil assembly, and the substrate portion is provided with a driving power connection port electrically connected to the coil assembly; The fan wheel comprises a hub and a permanent magnet, the hub is provided with a central shaft coupled with the pivoting portion of the axle seat, the permanent magnet is coupled to the hub and opposite to the coil assembly, and the permanent magnet and the coil There is an air gap between the groups. Thereby, the driving power connection port can be electrically connected to a driving circuit through a wiring, so that the driving circuit is located outside the air gap, and the coil substrate is not provided with a plurality of electronic components of the driving circuit, so as to reduce Axial height and compact green structure complexity and many other effects. The shaft seat has a fixing portion and a pivoting portion. The pivoting portion is disposed on one side of the fixing portion. The central shaft is coupled to the pivoting portion of the shaft seat. The base portion of the coil 201041491 has a surface layer. The coil assembly is formed on a side surface of the surface layer, and the coil assembly is located between the surface layer and the fixing portion of the shaft seat. Thereby, when the coil assembly is integrally coupled to the substrate portion, the coil assembly can be consolidated on one side of the surface layer to achieve the effect of further reducing the axial height. 0 The substrate portion of the coil substrate has a relative A surface layer and a bottom layer, the coil group being located between the surface layer and the bottom layer. Thereby, when the coil assembly is integrally coupled to the substrate portion, the coil assembly can be surely integrated between the surface layer and the bottom layer, and the effect of further reducing the axial height can be achieved. The fan wheel further includes an outer ring portion, and the outer ring portion surrounds the wheel and the outer ring portion and the hub form an air inlet and an air outlet. As a result, a more compact structural design can be utilized to achieve the effect of guiding the direction of airflow. The shaft frame is further combined with a frame, the frame has an accommodating space, and the arranging portion is provided with a bearing portion, the bearing portion is coupled to the shaft seat, and the fan frame is provided with an air inlet and an air outlet. The air inlet and the air outlet communicate with the accommodating space. In this way, the effects of guiding the airflow and improving the driving effect can be achieved. The coil substrate is further combined with a frame body, the frame body has an accommodating space, the coil substrate is located in the accommodating space, and a plurality of connecting members are coupled between the coil substrate and the frame body, and the frame body is separately provided. The air inlet and the air outlet are connected to the accommodating space. In this way, it can also be used to guide the airflow and enhance the driving effect, and has the effect of omitting the components to simplify the structural complexity. 201041491 The fan is busy into the frame body and has a slot for the wire to be stretched. The slot is connected to the device „ _ block is pressed against the wire. By 茈, ^ is now 疋 了 疋 疋 该 该The above-mentioned and other objects, features and advantages of the present invention will become more apparent and obvious. The following is a preferred embodiment of the present invention. The following is a detailed description of the following: As shown in Figures 4 and 5, the cooling fan of the present invention comprises at least a shaft base 10, a coil substrate 20 and a fan wheel 30. The shaft base 10 has a fixing portion 11 and a pivot portion. 12. The fixing portion 11 is configured to be directly coupled to a predetermined portion of various electronic devices, electronic instruments, or other items that must be heat-dissipated, or the fixed portion 11 is also available for the shaft holder. A hinge frame 12 is disposed on one side of the fixing portion 11 for the fan wheel 30 to rotatably couple the shaft base 10. The coil substrate 20 is coupled to the shaft base 10, The coil substrate 20 has a substrate portion 21 and a coil group 22. The substrate portion 21 Preferably, it is selected from a printed circuit board; the coil assembly 22 can be integrated with the substrate portion 21 by means of a layout or other suitable manner so that the coil assembly 22 does not protrude from the surface of the coil substrate 20, so that The driving portion of the coil substrate 20 is effectively reduced. In addition, the substrate portion 21 is provided with a driving power connection port 23, and the driving power source port 23 is electrically connected to the coil group 22. The driving power port 23 can be As shown in FIG. 4, direct 201041491 is provided on the substrate portion 21; or as shown in Fig. 6, a convex portion (not shown) may be formed on the outer periphery of the substrate portion 21 to connect the driving power source. The substrate portion 21 of the coil substrate 20 preferably has a surface layer 211, which is an insulating layer (not labeled) formed on the surface of the substrate portion 21; 21 preferably further has a bottom layer 212 opposite to the surface layer 211, and the bottom layer 212 may also be an insulating layer (not labeled) formed on the surface of the substrate portion 21 to insulate the coil substrate 20 Function and the substrate The bottom layer 212 of the substrate 21 can be attached to the fixing portion 11 of the base 10. In addition, a side surface of the surface layer 211 of the substrate portion 21 can form the coil group 22, so that the coil group 22 can be located on the surface layer 211. Between the fixing portions u; or, when the substrate portion 21 has the bottom layer 212, the coil group 22 is preferably located between the surface layer 211 and the bottom layer 212 of the substrate portion 21. The fan wheel 3〇 includes a hub ^ And a permanent magnet. The wheel is provided with a center shaft 31. The nail shaft 311 is rotatably coupled to the pivot portion 12 of the shaft base 10; the permanent magnet% is combined with the wheel and the permanent magnet 32 is opposite to the line _ 22, and the permanent magnet % and the _ group 22 have an air gap (not shown) on the (four) of the fan wheel 3G. When the heat-dissipating fan of the present invention is actually used, the driving of the coil substrate 20, the source connection port 23 can be electrically connected to the driving circuit 4, wherein the driving power source port 23 can be connected to the wiring 1%, and the wiring is % The other end is connected to the driving circuit 40. The driving circuit 4 can be electrically connected to the coil assembly 22 201041491 through the structural design of the driving power connection port 23 for actuating the coil assembly 22, A magnetic interlinking action is generated between the coil assembly 22 and the permanent magnet 32, thereby driving the fan wheel 30 to rotate to provide a predetermined heat dissipation. The main features of the heat dissipating fan of the present invention include at least the structural design of the driving power supply port 23 of the coil substrate 20, and the driving circuit 4 is not provided on the surface of the coil substrate 20. The coil substrate 20 and the driving circuit 4 can be separated structure, and the two are connected to each other only through the wiring 50, so that the driving circuit 4 can be located between the permanent magnet 32 and the coil group 22. In addition to the formed air gap, the coil substrate 20 is not provided with a plurality of electronic components of the driving circuit 4 to effectively reduce the axial height of the coil substrate 20. Therefore, as shown in FIG. 5, in the axial direction of the fan wheel 30, it is further ensured that the driving circuit 40 is not located between the shaft base 10, the coil substrate 2, and the fan wheel 3〇, thereby effectively reducing the present. The overall axial height of the cooling fan is invented, and has the advantages of reduced structural complexity and ease of assembly. Furthermore, the coil assembly 22 is formed on one side of the surface layer 211 of the substrate portion 21 (preferably between the surface layer 211 and the bottom layer 212), so that the coil assembly 22 can be integrated into the The inside of the coil substrate 2 is further ensured that the coil and the group 22 do not protrude from the surface of the coil substrate 2', thereby preventing any coil structure between the fan wheel 30 and the surface layer 211 of the coil substrate 2, Moreover, under the condition that the coil assembly 22 is integrated into the coil substrate 20 by wiring, the axial height of the coil substrate 20 is not increased by one, that is, the overall axial direction of the cooling fan of the present invention can be reduced. height. 201041491: In general, when the coil substrate 20 is engaged with the shaft base 1 and the fan wheel 30 to constitute the heat dissipation fan of the present invention, since the electronic components of the drive circuit are not coupled to the coil substrate 20, Therefore, the overall drawing height and volume of the cooling fan of the present invention can be relatively reduced; in addition, if the coil group 22 is formed on the surface 211 side of the substrate portion 21, the axial height is further reduced. The advantage is that the cooling fan can be developed in a direction that is lighter, thinner and shorter. According to the structural design concept of the heat dissipating fan of the present invention, the cooling fan of the present invention can further change other auxiliary structural features as described below, so that the function of the cooling fan of the present invention is more perfect, wherein: As shown in FIG. 5 , the fan wheel 30 preferably further includes an outer ring portion 33 , and the outer ring portion 33 surrounds the wheel 31 to form an air inlet 331 between the outer ring portion 33 and the hub 31 . An air outlet 332: thereby, when the fan wheel 30 rotates, the turbulence can be introduced from the air inlet 331, and the damper 31 of the fan wheel 30 is further used to drive the airflow Q to flow through the air outlet 332 to The predetermined part is to guide the airflow direction in one direction, and can also improve the overall driving effect. As shown in FIG. 6 and FIG. 7 , the housing 1 is preferably combined with a housing, and the frame 60 has a receiving space 61. The receiving space 61 defines a bearing portion 62. The air bearing port 63 and the air outlet 64 are connected to the accommodating space 61. The air receiving port 63 and the air outlet 64 are connected to the accommodating space 61. In addition, the fan frame 60 can be selected from the fan frame of the axial flow fan or the fan frame of the air blower fan according to actual needs. As shown in the embodiment, the fan frame 6 is disclosed as an axial flow fan. The fan frame. Therefore, the cooling fan of the present invention can be conveniently transmitted through the fan 201041491=〇: combined with various electronic devices, electronic instruments or other predetermined parts of the heat-dissipating items to improve the convenience of use; The fan frame 60 is used to achieve the guiding airflow and the effect of improving the air-driving effect, etc., and the coil substrate 2 is formed or detachable, as shown in the figures 8 and 9. The frame and the coil substrate 20 are formed. Located in the accommodating space ′ and between the _substrate 2G and the frame %, the number N can be combined with the splicing of the slabs and the slabs of the slabs The air inlet plate 2 〇 can directly replace the bearing portion 62 as shown in FIG. 6 . Therefore, the second embodiment can further reduce the shaft degree compared to the embodiment as shown in FIG. 6 and Omit the phase structure (four) body structure complexity. Referring to FIGS. 6 and 8, the frame 60 or the frame 70 preferably has a missing slot 65, 75. The slot 65, 75 communicates with the receiving space 61: 7 and the slot 65 And 75 can be used for a positioning block, %: thereby, when one end of the wire 50 is combined with the driving power connection port 23 of the coil substrate 2, the other end can penetrate the notch 65, 75 to The fan frame 60 or the outside of the frame body 70 is connected to the driving circuit 4; at this time, the clamping blocks 66, 76 can be coupled to the notches 65, 75, and then the positioning block 66, 76 is pressed against the wire 50. It is used to achieve the advantages of positioning the wire 50 and preventing the external force from pulling the wire 5 不. As described above, the cooling fan of the present invention can be designed by the driving power supply 23 of the coil substrate 20, so that the surface of the coil substrate 2 (j12 - 201041491: several electronic components not provided with the driving circuit 4? Preferably, the coil assembly 22 of the coil substrate 20 is disposed on the two sides of the surface of the substrate portion 21 (preferably between the surface layer 211 and the bottom layer 212) to effectively reduce the heat dissipation fan of the present invention. The axial height can relatively reduce the overall volume of the cooling fan of the present invention, thereby achieving the function of designing and developing toward the micro-type. The present invention has been disclosed in the above-described preferred embodiments, and it is not intended to limit the invention, and various modifications and changes may be made to the above embodiments without departing from the spirit and scope of the invention. It is still within the technical scope of the present invention, and the scope of the present invention is defined by the scope of the appended claims. [Simplified explanation of the 囷 type] Fig. 1 is a three-dimensional exploded view of the first type of cooling fan. Figure 2: An exploded perspective view of a second type of cooling fan. Figure 3: A cross-sectional view of a combination of a second type of cooling fan. 〇 Fig. 4: An exploded perspective view of the cooling fan of the present invention. Fig. 5 is a sectional view showing the combination of the heat radiating fan of the present invention. Figure 6 is an exploded perspective view of the cooling fan of the present invention in combination with a fan frame. • Figure 7: A cross-sectional view of the combination of the cooling fan of the present invention in combination with a fan frame. Fig. 8 is an exploded perspective view showing the heat dissipating fan of the present invention in combination with a hinge body. Fig. 9 is a cross-sectional view showing the assembly of the heat radiating fan of the present invention in combination with the casing. [Description of main components] [Invention] [13] 201041491 10 Shaft seat 11 Fixing portion 12 Habiting portion 20 Coil substrate 21 Substrate portion 211 Surface layer 212 bottom layer 22 Coil group 23 Driving power supply port 30 Fan wheel 31 Hub 311 Center axis 32 permanent magnet 33 outer ring part 331 air inlet 332 air outlet 40 drive circuit 50 wiring 60 fan frame 61 accommodation space 62 bearing part 63 air inlet 64 air outlet 65 slot 66 positioning block 70 frame 71 housing space 72 connector 73 Air inlet 74 Air outlet 75 Missing slot 76 Positioning block [General] 80 Cooling fan 81 Housing 811 Mounting bracket 812 Supporting shaft tube 82 Control unit 821 Control circuit board 83 Stator—14 — 201041491 84 Fan unit 90 Cooling fan housing Space shaft tube coil 91 frame 911 912 base 913 92 circuit board 93 94 rotor 〇
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