201040396 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種直流馬達及其所構成之直流風 扇’尤其是關於一種具有杯形定子之内轉子式直流馬達， 以及利用該馬達所構成之直流風扇。 【先前技術】 請參照第1圖所示，其係繪示-習知之直流風扇的組 合剖視圖，該直流風扇係由-殼體7、—直流馬達.8及一 扇輪9所構成。該殼體7具有一容置空間71，以供容置該 直流馬達8。該直流馬達8包含一定子81及一轉子82，該 疋子81係固定於該殼體7之内表面，而該轉子82則是可 轉動的容設於該容置空間71内。 請再參照第1圖所示，該直流馬達8之定子81具有 :永久磁環811及一電刷812。其中，該永久磁環如、係 環繞該轉子82 ’而該電刷812則鄰近於該永久磁環811之 端，並供連接至-直流電源^另—方面該直流馬達8 之轉子82具有-轴桿82卜一繞線鐵心822及一換向器 823其中該轴桿821之一端穿出該殼體γ該繞線鐵心似 套設於該軸桿Μ卜並具有—徑向相_向該永久磁環 811^且該繞線鐵心822與該永久磁環si〗間隔設置以形成 氣隙’且當電流通過該繞線鐵心822之線圈時，該電流 即與該永久磁每811之磁場產生磁交鏈作用；該換向器823 亦套叹於該轴桿821並與該繞線鐵心奶之線圈電性連 接，且該換向器823具有-外周面供該電刷812可滑動的 201040396 電性接觸。此外’該扇輪9係固設於該軸桿821穿出該殼 體7之一端。 依據上述之習知直流風扇結構’當該直流電源供應直 流電力至該定子81之電刷812時’該電刷812即透過該轉 子82之換向器823將該直流電力送至該繞線鐵心822之線 圈。藉此，該直流電力於該線圈t所形成的電流即與該永 久磁壤811之磁場產生磁交鍵作用，進而推動該轉子82相 對於該定子81進行旋轉。此外，藉由控制該直流電力而調 〇 整該繞線鐵心822之線圈中的電流’可決定該轉子82之轉 速。 然而，由於該換向器823係由平行於該軸桿821且分 隔設置的數個換向片構成，故當該電刷812由其中一換向 片切換至相鄰之另一換向片時，即易於該電刷812及換向 器823之間產生火花，且同時產生雜訊而影響系統自控。 另，由於該電刷812必須緊密抵接於該換向器823尤外周 〇 面，以確保該電刷812及換向器823之間的電性接觸，因 此不但必須定期汰換過度磨耗之電刷812，也必須定期處 理該換向器823之外周面，以避免前述之火花所產生的積 碳影響該電刷812及換向器823之間的導電性。此外，雖 然可藉由控制該直流電力而決定該轉子82之轉速，但由於 該電刷812係於各該換向片之間進行切換，導致透過該電 刷812及換向ϋ 823進行傳導的直流電力極易因而產生雜 訊，造成該習知之直流風扇無法適用於需要進行精確 扇轉速控制的產品中。 請參照第2圖所示，其鱗示另一習知之直流風扇的 201040396 組合剖視圖。此一直流風扇與前述之直流風扇的差異在 於：構成此一直流風扇之直流馬達8，係以一杯形轉子82, 取代前述之轉子82，且該杯形轉子82’具有一軸桿821，及 一線圈杯體822,，其中該轴桿821，係穿設固定於該線圈杯 體822並沿該線圈杯體822’之轴心線延伸，而該線圈杯 體822則由至少一導線捲繞形成。此外，該直流馬達8,之 定子81’的永久磁環811，係設置於該線圈杯體822，内，並 供該軸桿821’通過，以便該線圈杯體822,之内周面朝向該 永久磁環811’，且在該線圈杯體822,與該永久磁環811，之 間形成一氣隙。然而，雖然上述之杯形轉子82’的結構因 為具有低轉動慣量、高能量轉換率等特性，而可提高該直 流風扇在轉速控制上的靈敏度，惟此一輕質結構亦相對降 低旋轉穩定性，且該直流馬達8,仍需藉由一電刷812，及一 換向器823’進行該直流電力的傳輸，造成該直流風扇仍存 在有前述應用該電刷812及換向器823所造成之缺陷。 更且，上述習知之直流馬達不僅存在無法進行精確控 制之缺陷，且當該直流馬達8、8,之負載有所變化時，必 須另藉由額外的感測裝置（例如：機械調速器、電子調速 器、轉速信號產生器或光學編碼器〕將該直流馬達8、8, 之實際轉速進行回授，以便對應調整該直流電力之電壓值 而使該直流馬達8、8’於一期望轉速下運轉；惟，此係造 成該直流馬達8、8’及其構成之直流風扇的製造成本提高， 且該感測裝置本身的精確度亦將影響轉速控制的品質。基 於上述原因，習知之直流馬達及其所構成之風扇確實有加 以改善之必要。 201040396 【發明内容】 本發明提供一種具杯形定子之直流馬達及其構成之 直流風扇，主要係藉由一控制驅動單元產生控制電流並直 接將該控制電流輸出至一杯形定子，以使該直流馬達及風 扇具有高控制靈敏度及控制精確度，並可供進行智慧型轉 速控制’為其主要之發明目的。 本發明提供一種具杯形定子之直流馬達及其構成之 直流風扇，該杯形定子之一筒狀繞線部係由至少一導線捲 〇 繞形成，且該至少-導線係直接形成關狀繞線部之内周 面，以降低該直流馬達及風扇之結構複雜度，為其次要發 明目的。 、 纟發明提供-種具杯形定子之直流風扇，係以射出成 型包覆的方式將該筒狀繞線部直接固定於_殼體之容置空 間内，以提高該直流風扇的組裝便利性，為其另一發明目 的。 〇 騎到前述發明目的，本發賊運用之技術手段及藉 由該技術手段所能達到之功效包含有： 一種具杯形定子之直流風扇，包含-殼體、-直流馬 達、-扇輪及-控伽動單元。該贿具有—承載框，且 .該承載框形成一容置空間；該直流馬達設置於該承載框之 ，且該直流馬達由一轉子及一杯形定子構成，該 轉子/、有-轴桿及-永久磁鐵’該永久磁鐵套接固定於該 軸桿之外側周面’該杯形定子具有一筒狀繞線部環繞該轉 =該筒狀繞線部形成一内周面朝向該轉子之永久磁鐵 °面’進而在該筒狀繞線部與該轉子之間形成一氣 201040396 3 轴桿之—端；該控制驅動單元容設於 ::置：:二中’並與該杯形定子之筒狀繞線部電性連接。 莫德狀繞線部由至少―導線捲繞形成，且該至少一 導線係捲繞域㈣料線部之 ==::!流不_任何電刷及編= 』μ㈣<子’故可提高該纽馬達及風扇之 =敏3精確度;且該杯形定子係由極為簡單 所元成’故亦可大幅降低在結構上及組裝上之複雜度。 所述之八杯$疋子之直流風扇的殼體係以射出成型 =f、r於該杯形定子。藉此，可進-步降低該直 流風扇之組裝複雜度。 種具杯形定子之直流馬達，包含—轉子、一杯形定 子及-控·料元。該轉子具有—轴桿及—永久磁鐵， 且該水久磁馨接固定_轴桿之外删面；該杯形定子 具有一筒狀繞_環_轉子，且狀繞_形成一内 轉子之水久磁鐵的外周面’進而在該筒狀繞線 二子之間形成—氣隙；該控制驅動單元係與該杯形 j子之筒狀繞線部電性連接。其中，該筒狀繞線部由至少 立導線捲繞$成’且該至少_導線係捲細彡成該筒狀繞線 靈理’該直流馬達亦藉由其結構提供高控制 靈敏度及精確度’並_降赌構複雜度。 【實施方式】 ▲為讓本發明之上述及其他目的、賴及優點能更明顯 易麼下文特舉本發明之較佳實施例’並配合所附圖式， 201040396 作詳細說明如下： 請參照第3及4圖所示’其係纟會示本發明較佳實施例 之分解立體圖及組合剖視圖。本發明之直流風扇主要係由 具有中空杯形之定子的内轉子式直流馬達構成，且本較佳 實施例之直流風扇係包含一殼體1、一直流馬達2、一扇輪 3及一控制驅動單元4。該殼體1具有一容置空間1Q，以 供容設該直流馬達2及控制驅動單元4。該扇輪3結合於 該直流馬達2之一端，且該控制驅動單元4與該直流馬達 2電性連接。藉此，當該控制驅動單元4輸出一控制電流 至該直流馬達2時’該直流馬達2即驅動該扇輪3相對於 該殼體1進行旋轉作動。 請再參照第3及4圖所示，本發明較佳實施例之殼體 1係具有一導風外框11及一承載框12，該導風外框η之 軸向二端分別形成一進風口 ηι及一出風口 112，而該承 載框12之内部即設有該容置空間1〇，該承載框12係設置 於該導風外框11中，且位於該進風口 lu及出風口 112之 間。其中，該導風外框11及承載框12之間係以至少一連 接件13相互連接，以便在該導風外框u與承載框12之間 形成一流道14，且該導風外框n、承載框12及連接件13 較佳係以-體成型方式形成。又，該連接件13較佳係鄰近 於該導風外框11之出風口 112，且該連接件13可選自肋 條或靜葉等結構。此外，根據本發明之直流風扇的雇用情 況，該殼體1亦可僅包含具有該容置空間1G之承載框12 〇 更詳言之，本發明之承载框12較佳係由-本體121 201040396 、-底板m及-定位件123共同組成，其中該本體 與該底板122相互結合以制形成觀置空間1()，而_ 位件m侧設於該容置㈣_。另，該承餘^ 具有HD 124形成於該本體121之頂部，並朝向 口 m，且該開口 m係、可結合-第一轴承15，而= 件123則可結合-第二軸承16，該第一轴承15及第二轴 承16係在該直流風扇之軸向上對位設置。 請再參照第3及4圖所示，本發明較佳實施例之直流 馬達2包含-杯形定子21及—轉子22，該杯形定子η ^ 极向環繞該轉子22，且岐於該第—及第二軸承15、ΐ6 之間。更詳言之，該杯形定子2Η系為具有中空杯形的定子 ’其包含-筒狀繞線部21卜-結合板212及一通孔213 ’該筒狀繞線部211係由至少一導線捲繞形成，且該筒狀 繞線部211環繞於該轉子22，以形成一内周面朝向該轉子 22 ’並在該筒狀繞線部211與該轉子22之間形成一 該結合板212固設於該筒狀繞線部211之一軸向端緣:以 便/、該同狀繞線部211共同構成該杯形定子21，且該結合 板212較佳係鄰接該承載框12之定位件⑵，以供該定位 件123透過該結合板212更為穩固的承載該杯形定子21，； 該通孔213係設置於該結合板212之中心位置，以供該轉 子22通過該結合板212。其中，該筒狀繞線部211之内周 面係由該至少-導線捲繞形成。#，可進—步省略該結合 板^12，僅由該筒狀繞線部211構成該杯形定子21，且當 該殻體1之承_丨2選擇⑽出成型的方式形成時，可利 用射出成型包覆的方式㈣杯形定子21的外周面直接結 201040396 合於該承载框12的内壁面。藉此，透過僅具有極為簡單之 結構的杯形定子21，本發明之直流風扇及該直流馬達2的 組裝複雜度可大幅降低。 请再參照第3及4圖所示，該直流馬達2之轉子22 具有一軸桿221及一永久磁鐵222。該軸桿221之一端結 . 舍且穿過該第一軸承15，以便伸出該承載框^並結合於 該扇輪3，而該軸桿221之另一端則結合於該第二軸^ 16 ，該永久磁鐵222係套接固定於該轴桿221之外側周面， 且該水久磁鐵222具有一外周面朝向筒狀繞線部211之内 周面。該控制驅動單元4係固設於該底板122及定位件123 之間，其係與該筒狀繞線部211之導線電性連接，且供連 接一外部電源。 八 备本發明之直流風扇進行運轉時，該控制驅動單元4 接$該外部電源所產生之電力，且藉以產生該控制電流並 傳送至該直流馬達2之杯形定子21的筒狀繞線部211。藉 Q 此，該控制電流係通過該筒狀繞線部211之導線，並與該 轉子22之永久磁鐵222的磁場產生磁交鏈作用，進而驅動 該轉子22帶動該扇輪3進行旋轉作動。其中，由於本發明 , 之直流風扇不需透過任何額外的電刷及換向器，即可直接 ’將該控制電流由該控制驅動單元4傳送至該直流馬達2之 杯形定子21，故此-結構確實可大幅減少在傳輸該控制電 "IL時所產生的干擾及雜訊。據此，該控制驅動單元4之電 路係可由智慧型集成電路構成，且可在不虞該控制電流受 到過大的干擾或雜訊影響的情下，輸出具有高精確度的控 制電流至該筒狀繞線部211進行轉速控制，進而達成具有 —11 — 201040396 高控制靈敏度及控制精確度之目的。 詳言之，藉由在該控制驅動單元4設置一換流電路， 即可根據該換流電路之運作產生回授訊號，以便對本發明 之直流馬達及風扇進行精碟的轉速伺服控制。此外，亦可 將脈寬調變技術〔Pulse WidthModulati〇n〕應用於該控制 驅動單元4，利用改變導通時間的脈波寬度而調整施加於 該直流馬達2的平均電力，進而改變其轉速。更且，可直 接由該控制驅動單元4偵測並回授其所產生的控制電流， 以便在該直流馬達2呈現異常運轉狀態時送出警示訊號， 或在本發明之直流風扇與其他裝置進行系統整合時可供運 用。 疗綜上所述，相較於習用之直流馬達必須藉由電刷及換 向器傳輸-直流電力’因而使該直流電力產生過大的雜訊 本發明之直流馬達2係直接將該控制驅動單元4所輸出 之具有高精確度的控制電流送至該杯形定子21，可有效避 免該控制電流含有過大之誠，且更可透職控制驅動單 元4進行智慧型轉速控制。另，包含該筒狀繞線部川且 呈中空杯形的杯敎子21係可大鱗傾直流風扇及直 流馬達的結構複雜度。此外，更可選擇直接以射出成型包 覆的方式將該缚狀繞線部211直接固定於該殼體1之容置 空間1 〇内，進而有效提高本發明之直流風扇的組裝便利性 0 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，相對上述實施例進行各種更動與修改仍屬本 —12 — 201040396 發明所保護之賴射，ϋ此本㈣之賴㈣當視後附 之_請專利範圍所界定者為準。 【《式簡單說明】 第1圖：由-種習知的直流馬達所構成的直流風廣之組 合剖視圖。 第2 m種習知的直流馬達所構成的直流風扇之 組合剖視圖。 Ο201040396 VI. Description of the Invention: [Technical Field] The present invention relates to a DC motor and a DC fan formed thereof, in particular to an inner rotor type DC motor having a cup-shaped stator, and using the same DC fan. [Prior Art] Referring to Fig. 1, a cross-sectional view of a conventional DC fan is shown, which is composed of a - casing 7, a DC motor 8. and a fan wheel 9. The housing 7 has an accommodation space 71 for receiving the DC motor 8. The DC motor 8 includes a stator 81 and a rotor 82. The latch 81 is fixed to the inner surface of the housing 7. The rotor 82 is rotatably received in the receiving space 71. Referring again to Fig. 1, the stator 81 of the DC motor 8 has a permanent magnetic ring 811 and a brush 812. Wherein, the permanent magnetic ring surrounds the rotor 82' and the brush 812 is adjacent to the end of the permanent magnetic ring 811, and is connected to the -DC power supply. The rotor 82 of the DC motor 8 has - The shaft 82 is a winding core 822 and a commutator 823, wherein one end of the shaft 821 passes through the casing γ, and the winding core is sleeved on the shaft and has a radial phase a permanent magnetic ring 811 and the winding core 822 is spaced apart from the permanent magnetic ring si to form an air gap 'and when a current passes through the winding of the winding core 822, the current is generated with the magnetic field of the permanent magnet per 811 The magnetic cross-linking action; the commutator 823 also sighs on the shaft 821 and is electrically connected to the coil of the wound core milk, and the commutator 823 has an outer peripheral surface for the brush 812 to slide slidable 201040396 Electrical contact. Further, the fan wheel 9 is fixed to the shaft 821 and passes through one end of the casing 7. According to the above-described conventional DC fan structure 'When the DC power supply supplies DC power to the brush 812 of the stator 81, the brush 812 sends the DC power to the wound core through the commutator 823 of the rotor 82. 822 coil. Thereby, the current formed by the DC power in the coil t, that is, the magnetic interaction with the magnetic field of the permanent magnetic field 811, causes the rotor 82 to rotate relative to the stator 81. Further, the current in the coil of the wound core 822 can be adjusted by controlling the DC power to determine the rotational speed of the rotor 82. However, since the commutator 823 is composed of a plurality of commutator segments disposed parallel to the shaft 821 and separated, when the brush 812 is switched from one of the commutator segments to the adjacent one of the commutator segments That is, it is easy to generate a spark between the brush 812 and the commutator 823, and at the same time generate noise and affect the system self-control. In addition, since the brush 812 must be in close contact with the outer peripheral surface of the commutator 823 to ensure electrical contact between the brush 812 and the commutator 823, it is necessary not only to replace the excessive wear power regularly. The brush 812 must also periodically treat the outer peripheral surface of the commutator 823 to prevent the carbon deposit generated by the aforementioned spark from affecting the electrical conductivity between the brush 812 and the commutator 823. In addition, although the rotational speed of the rotor 82 can be determined by controlling the DC power, since the brush 812 is switched between the commutator segments, the brush 812 and the reversing port 823 are transmitted. DC power is extremely prone to noise, making the conventional DC fan unsuitable for use in products requiring precise fan speed control. Please refer to FIG. 2, which shows a cross-sectional view of another conventional DC fan 201040396. The difference between the DC fan and the DC fan is that the DC motor 8 constituting the DC fan is replaced by a cup rotor 82, and the cup rotor 82' has a shaft 821, and a a coil cup 822, wherein the shaft 821 is threaded and fixed to the coil cup 822 and extends along an axis of the coil cup 822', and the coil cup 822 is formed by winding at least one wire. . In addition, the permanent magnet ring 811 of the stator 81' of the DC motor 8 is disposed in the coil cup 822, and the shaft 821' is passed through, so that the inner circumference of the coil cup 822 faces the A permanent magnetic ring 811', and an air gap is formed between the coil cup 822 and the permanent magnetic ring 811. However, although the structure of the cup rotor 82' described above has the characteristics of low moment of inertia and high energy conversion rate, the sensitivity of the DC fan in the rotational speed control can be improved, but the lightweight structure also relatively reduces the rotational stability. And the DC motor 8 still needs to transmit the DC power through a brush 812 and a commutator 823', so that the DC fan still has the aforementioned application of the brush 812 and the commutator 823. Defects. Moreover, the above-mentioned conventional DC motor not only has the defect that the precise control cannot be performed, but when the load of the DC motor 8, 8 is changed, it is necessary to additionally use an additional sensing device (for example, a mechanical governor, The electronic speed governor, the speed signal generator or the optical encoder is used to feedback the actual speed of the DC motor 8, 8 to adjust the voltage value of the DC power to make the DC motor 8, 8' desired Operating at a rotational speed; however, this causes an increase in the manufacturing cost of the DC motor 8, 8' and its constituent DC fan, and the accuracy of the sensing device itself will also affect the quality of the rotational speed control. For the above reasons, conventionally known The present invention provides a DC motor having a cup-shaped stator and a DC fan thereof, which mainly generates a control current by a control driving unit. The control current is directly output to the cup-shaped stator, so that the DC motor and the fan have high control sensitivity and control precision, and are available The invention relates to a DC motor with a cup-shaped stator and a DC fan thereof. The cylindrical winding portion of the cup-shaped stator is wound by at least one wire. Formed, and the at least-wire is directly formed on the inner circumferential surface of the off-line winding portion to reduce the structural complexity of the DC motor and the fan, for the purpose of the second invention. The invention provides a DC with a cup-shaped stator. The fan is directly fixed to the accommodating space of the housing by means of injection molding, so as to improve the assembly convenience of the DC fan, and another object of the invention is The object of the invention is that the technical means used by the thief and the functions achievable by the technical means include: a DC fan with a cup-shaped stator, including a casing, a DC motor, a fan wheel, and a control gamma The bribe has a carrier frame, and the carrier frame forms an accommodating space; the DC motor is disposed on the carrier frame, and the DC motor is composed of a rotor and a cup-shaped stator, the rotor/ a shaft and a permanent magnet 'the permanent magnet sleeve is fixed to the outer peripheral surface of the shaft'. The cup-shaped stator has a cylindrical winding portion surrounding the rotation. The cylindrical winding portion forms an inner circumferential surface. a permanent magnet surface facing the rotor', and further forming a gas 201040396 3 shaft between the cylindrical winding portion and the rotor; the control driving unit is accommodated in:::: two middle and The cylindrical winding portion of the cup-shaped stator is electrically connected. The Morder-shaped winding portion is formed by at least "wire winding", and the at least one wire is wound in the winding field (4) of the material line portion ==::! Brush and braid = 』μ(4)<子' can improve the accuracy of the motor and the fan; and the cup-shaped stator is made of extremely simple elements, so the structure and assembly can be greatly reduced. The complexity of the eight-cup 疋 之 DC fan housing is injection molded = f, r to the cup-shaped stator. Thereby, the assembly complexity of the DC fan can be further reduced. A DC motor with a cup-shaped stator includes a rotor, a cup-shaped stator, and a control element. The rotor has a shaft and a permanent magnet, and the water is magnetized and fixed to the outside of the shaft; the cup-shaped stator has a cylindrical winding_ring_rotor and forms an inner rotor The outer peripheral surface of the water-long magnet further forms an air gap between the two tubular windings; the control driving unit is electrically connected to the cylindrical winding portion of the cup-shaped j. Wherein, the tubular winding portion is wound by at least a vertical wire and the at least the wire is wound into a cylindrical winding wire. The DC motor also provides high control sensitivity and precision by its structure. 'And _ gambling complexity. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to make the above and other objects, advantages and advantages of the present invention more obvious, the preferred embodiment of the present invention will be described hereinafter with reference to the accompanying drawings, 201040396. 3 and 4 are schematic views showing an exploded perspective view and a combined cross-sectional view of a preferred embodiment of the present invention. The DC fan of the present invention is mainly composed of an inner rotor type DC motor having a hollow cup-shaped stator, and the DC fan of the preferred embodiment comprises a casing 1, a DC motor 2, a fan wheel 3 and a control. Drive unit 4. The housing 1 has an accommodation space 1Q for accommodating the DC motor 2 and the control drive unit 4. The fan wheel 3 is coupled to one end of the DC motor 2, and the control drive unit 4 is electrically connected to the DC motor 2. Thereby, when the control drive unit 4 outputs a control current to the DC motor 2, the DC motor 2 drives the fan wheel 3 to rotate relative to the casing 1. Referring to the third and fourth embodiments, the housing 1 of the preferred embodiment of the present invention has an air guiding outer frame 11 and a bearing frame 12, and the axial ends of the air guiding outer frame η form a front end. The air outlet ηι and the air outlet 112 are disposed, and the accommodating space 1 is disposed inside the bearing frame 12, and the bearing frame 12 is disposed in the air guiding outer frame 11 and located at the air inlet lu and the air outlet 112. between. The air guiding outer frame 11 and the carrying frame 12 are connected to each other by at least one connecting member 13 to form a first-class track 14 between the wind guiding outer frame u and the carrying frame 12, and the wind guiding outer frame n The carrier frame 12 and the connecting member 13 are preferably formed in a body-formed manner. Moreover, the connecting member 13 is preferably adjacent to the air outlet 112 of the wind deflecting outer frame 11, and the connecting member 13 may be selected from a structure such as a rib or a vane. In addition, according to the hiring condition of the DC fan of the present invention, the housing 1 can also include only the carrying frame 12 having the accommodating space 1G. In more detail, the carrying frame 12 of the present invention is preferably a body 121 201040396 The bottom plate m and the positioning member 123 are combined, wherein the body and the bottom plate 122 are combined to form an observation space 1(), and the _ position m side is disposed in the receiving (four)_. In addition, the bearing ^ has an HD 124 formed on the top of the body 121 and facing the mouth m, and the opening m is coupled to the first bearing 15, and the member 123 is coupled to the second bearing 16, which The first bearing 15 and the second bearing 16 are disposed in alignment with each other in the axial direction of the DC fan. Referring to FIGS. 3 and 4 again, the DC motor 2 of the preferred embodiment of the present invention includes a cup-shaped stator 21 and a rotor 22 that surrounds the rotor 22 and is adjacent to the first - and between the second bearing 15, ΐ6. More specifically, the cup-shaped stator 2 is a stator having a hollow cup shape, which includes a tubular winding portion 21, a coupling plate 212, and a through hole 213'. The cylindrical winding portion 211 is composed of at least one wire. Winding is formed, and the cylindrical winding portion 211 surrounds the rotor 22 to form an inner circumferential surface facing the rotor 22' and a coupling plate 212 is formed between the cylindrical winding portion 211 and the rotor 22. An axial end edge of the cylindrical winding portion 211 is fixed so that the same-shaped winding portion 211 together constitutes the cup-shaped stator 21, and the bonding plate 212 preferably abuts the positioning of the carrier frame 12 The member (2) is configured to carry the cup-shaped stator 21 more stably through the binding plate 212; the through hole 213 is disposed at a center of the bonding plate 212 for the rotor 22 to pass through the bonding plate 212. The inner circumferential surface of the cylindrical winding portion 211 is formed by winding at least the wire. #, The binding plate 12 can be omitted, and the cylindrical winding portion 211 is formed only by the cylindrical winding portion 211, and when the bearing 1 of the housing 1 is selected (10) to be formed by molding, The outer peripheral surface of the cup-shaped stator 21 is directly joined to the inner wall surface of the carrier frame 12 by means of injection molding. Thereby, the assembly complexity of the DC fan of the present invention and the DC motor 2 can be greatly reduced by the cup-shaped stator 21 having only a very simple structure. Referring to FIGS. 3 and 4 again, the rotor 22 of the DC motor 2 has a shaft 221 and a permanent magnet 222. One end of the shaft 221 is connected and passed through the first bearing 15 so as to extend out of the bearing frame and be coupled to the fan wheel 3, and the other end of the shaft 221 is coupled to the second shaft 16 The permanent magnet 222 is sleeved and fixed to the outer peripheral surface of the shaft 221, and the permanent magnet 222 has an outer peripheral surface facing the inner peripheral surface of the cylindrical winding portion 211. The control driving unit 4 is fixed between the bottom plate 122 and the positioning member 123, and is electrically connected to the wire of the cylindrical winding portion 211, and is connected to an external power source. When the DC fan of the present invention is operated, the control drive unit 4 receives the electric power generated by the external power source, and generates the control current and transmits the control to the cylindrical winding portion of the cup-shaped stator 21 of the DC motor 2. 211. By this, the control current passes through the wire of the cylindrical winding portion 211, and magnetically interacts with the magnetic field of the permanent magnet 222 of the rotor 22, thereby driving the rotor 22 to drive the fan wheel 3 to rotate. Wherein, the DC fan can directly transmit the control current from the control driving unit 4 to the cup-shaped stator 21 of the DC motor 2 without passing through any additional brushes and commutators according to the present invention. The structure does significantly reduce the interference and noise generated when transmitting the control power. Accordingly, the circuit of the control driving unit 4 can be constituted by a smart integrated circuit, and can output a control current with high precision to the cylindrical winding without being affected by excessive interference or noise of the control current. The line portion 211 performs the rotation speed control, thereby achieving the purpose of high control sensitivity and control accuracy of -11 - 201040396. In detail, by providing a commutation circuit in the control driving unit 4, a feedback signal can be generated according to the operation of the commutation circuit to perform servo control of the speed of the refining disc for the DC motor and the fan of the present invention. Further, a pulse width modulation technique (Pulse Width Modulati) can be applied to the control driving unit 4, and the average power applied to the DC motor 2 can be adjusted by changing the pulse width of the ON time, thereby changing the rotation speed. Moreover, the control current generated by the control driving unit 4 can be directly detected and fed back to send an alarm signal when the DC motor 2 exhibits an abnormal operating state, or the system of the DC fan of the present invention and other devices can be used. Available for integration. According to the invention, the direct current motor must transmit the DC power by the brush and the commutator, thereby causing the DC power to generate excessive noise. The DC motor 2 of the present invention directly controls the driving unit. The output control current with high precision is sent to the cup-shaped stator 21, which can effectively avoid the excessive control of the control current, and can further control the driving unit 4 for intelligent speed control. Further, the cup tweezers 21 including the cylindrical winding portion and having a hollow cup shape can have a structural complexity of a large scale tilting DC fan and a DC motor. In addition, it is also possible to directly fix the bound winding portion 211 directly in the accommodating space 1 该 of the casing 1 by means of injection molding, thereby effectively improving the assembly convenience of the DC fan of the present invention. The present invention has been disclosed in the above-described preferred embodiments, and it is not intended to limit the present invention, and various modifications and changes may be made to the above-described embodiments without departing from the spirit and scope of the invention. 12 — 201040396 The protection of the invention is based on the scope of the patent (the fourth paragraph). [Simplified Explanation of the Formula] Fig. 1 is a cross-sectional view showing a combination of DC winds composed of a conventional DC motor. A combined cross-sectional view of a DC fan composed of a 2 m conventional DC motor. Ο
第3圖：本發社具_定子的纽風扇之較佳實施例 的立體分解圖。 第4圖：本發明之具杯形定子的直流風扇之較例 的組合剖視圖。 【主要元件符號說明】 〔本發明〕 10 容置空間 111進風口 12承載框 122底板 124 開口 14 流道 16 第二軸承 21 杯形定子 212結合板 22轉子 222永久磁鐵 1 殼體 11導風外框 112出風口 121本體 123定位件 13連接件 15第一軸承 2 直流馬達 211筒狀繞線部 213通孔 221軸桿 —13 — 201040396 3 扇輪 4 控制驅動單元 〔習知〕 7 殼體 71 容置空間 8 直流馬達 8， 直流馬達 81 定子 81， 定子 811 永久磁環 811， 永久磁環 812 電刷 812, 電刷 82 轉子 82， 杯形轉子 821 軸桿 82Γ轴桿 822 繞線鐵心 822’線圈杯體 823 換向器 823, 換向器 9 扇輪 —14 —Fig. 3 is a perspective exploded view of a preferred embodiment of the present invention. Fig. 4 is a sectional view showing a combination of a comparative example of a DC fan having a cup-shaped stator according to the present invention. [Main component symbol description] [Invention] 10 accommodating space 111 air inlet 12 bearing frame 122 bottom plate 124 opening 14 flow path 16 second bearing 21 cup-shaped stator 212 bonding plate 22 rotor 222 permanent magnet 1 housing 11 outside the wind guide Frame 112 air outlet 121 body 123 positioning member 13 connecting member 15 first bearing 2 DC motor 211 cylindrical winding portion 213 through hole 221 shaft - 13 - 201040396 3 Fan wheel 4 control drive unit [conventional] 7 housing 71 Accommodating space 8 DC motor 8, DC motor 81 stator 81, stator 811 permanent magnetic ring 811, permanent magnetic ring 812 brush 812, brush 82 rotor 82, cup rotor 821 shaft 82 Γ shaft 822 winding core 822' Coil cup body 823 commutator 823, commutator 9 fan wheel - 14 —