200918761 九、發明說明 【發明所屬之技術領域】 本發明有關一用於冷卻電器等之內 扇。 【先前技術】 日本專利第3 904595號（專利文件 之反轉式軸流風扇，該外殼包括一外殼 機架。該外殼本體包括一空氣通道，該 線方向中的一側面上之吸入開口及在該 側面上之排出開口。該馬達支撐機架係 的中心部份中。在此反轉式軸流風扇中 轉之第一推進器係設置在界定於該外殻 及該吸入開口之間的第一空間內。再者 轉之第二推進器係設置在界定於該外殼 及該排出開口之間的第二空間內。該第 第二推進器之旋轉方向相反的方向中旋 流風扇中，該外殼係由經過一耦接結構 分開之外殻單元所構成。該第一分開之 外殼本體半邊部份及第一支撐機架半邊 本體半邊部份包括第一圓柱形空氣通道 中包含該第一空間的一主要部份。該第 份係藉由將該馬達支撐機架沿著一虛擬 成二部份所獲得，該參考分開平面在與 側的反轉式軸流風 1)揭示一包括外殼 本體及一馬達支撐 空氣通道具有在軸 軸線方向中的另一 設置在該空氣通道 ’被第一馬達所旋 中之馬達支撐機架 ’被第二馬達所旋 中之馬達支撐機架 —推進器在一與該 轉。於此反轉式軸 耦接的第一及第二 外殼單元包括第一 部份。該第一外殼 半邊部份，並在其 一支撐機架半邊部 之參考分開平面分 該軸線方向正交的 -5- 200918761 徑向中延伸。該第二分開之外殼單元包括第二外殼本體半 邊部份及第二支撐機架半邊部份。該第二外殼本體半邊部 份包括第二圓柱形空氣通道半邊部份，並在其中包含該第 二空間的一主要部份。該第二支撐機架半邊部份係藉由將 該馬達支撐機架沿著該虛擬之參考分開平面分成二部份所 獲得。該耦接結構係由形成在該第一圓柱形空氣通道半邊 部份的端部之一的裝配部份、及形成在第二圓柱形空氣通 道半邊部份的端部之一而將與該裝配部份裝配的被裝配部 份所構成。 然而’於該傳統之反轉式軸流風扇中，當該第一圓柱 形空氣通道半邊部份之裝配部份及該第二圓柱形空氣通道 半邊部份之被裝配部份被被強力地壓抵靠著彼此，以耦接 該第一及第二分開之外殻單元時，過度的力量係施加至該 第一及第二分開之外殼單元的裝配部份。該第一及第二分 開之外殻單元可藉此被打破。 再者，於該傳統之反轉式軸流風扇中，該第一及第二 分開之外殼單元的耦接係不夠強固的。據此，當施加外力 時，該第一及第二分開之外殻單元傾向於被分離或斷開。 爲此緣故’其係需要使用螺絲、黏接劑等用於增強該第一 及第二分開外殼單元間之耦接。 【發明內容】 因此’本發明之一目的係提供一反轉式軸流風扇，其 中當該弟一及桌一分開之外殼單兀被稱接時，防止第一及 -6- 200918761 第二分開之外殼單元斷開。 本發明之另一目的係提供一反轉式軸流風扇，其中防 止該第一及第二分開之外殼單兀被輕易地分離或拆開，甚 至當外力被施加時。 本發明之反轉式軸流風扇包括一外殻、第一推進器、 第一馬達、第二推進器、及第二馬達。該外殻包括一外殻 本體及一馬達支撐機架。該外殼本體包括一空氣通道，該 空氣通道具有在軸線方向中的一側面上之吸入開口及在該 軸線方向中的另一側面上之排出開口。該馬達支撐機架係 設置在該空氣通道的一中心部份中。該第一推進器係設置 在該外殼中之馬達支撐機架及該吸入開口之間所界定的第 一空間中，且包括複數葉片。該第一馬達包括第一旋轉式 軸桿’該第一推進器被固定至該第一旋轉式軸桿上，且該 第一馬達在該第一空間內於第一旋轉方向中旋轉該第一推 進器。該第二推進器係設置在該外殼中之馬達支撐機架及 該排出開口之間所界定的第二空間中，且包括複數葉片。 該第二馬達包括第二旋轉式軸桿’該第二推進器被固定至 該第二旋轉式軸桿上’且該第二馬達在該第二空間內於與 該第一旋轉方向相反之第二旋轉方向中旋轉該第二推進器 0 該馬達支撐機架包括一設置在該空氣通道的中心部份 中之支撐機架本體、及在該等旋轉式軸桿的一圓周方向中 之預定間隔處設置於該機架本體及該外殼本體間之複數薄 板條。該等薄板條連接該支撐機架本體及該外殼本體。 200918761 該外殼係由第一及第二分開之外殼單元所構成，該等 外殼單元係經由一耦接結構耦接。該第一分開之外殼單元 包括第一外殼本體半邊部份及第一支撐機架半邊部份。該 第一外殼本體半邊部份包括在其一端部具有該吸入開口之 第一凸緣部份、及第一圓柱形空氣通道半邊部份，該第一 圓柱形空氣通道半邊部份的一端部係與該第一凸緣部份一 體成形，且該第一圓柱形空氣通道半邊部份在其中包含該 第一空間的主要部份。該第一支撐機架半邊部份係藉由將 該馬達支撐機架沿著一虛擬之參考分開平面分成二部份所 獲得，該參考分開平面在與該軸線方向正交的旋轉式軸桿 之徑向中延伸。該第二分開之外殻單元包括第二外殼本體 半邊部份及第二支撐機架半邊部份。該第二外殼本體半邊 部份包括在其一端部具有該排出開口之第二凸緣部份、及 第二圓柱形空氣通道半邊部份，該第二圓柱形空氣通道半 邊部份的一端部係與該第二凸緣部份一體成形，且該第二 圓柱形空氣通道半邊部份在其中包含該第二空間的主要部 份。該第二支撐機架半邊部份係藉由將該馬達支撐機架沿 著該虛擬之參考分開平面分成二部份所獲得。 在本發明中所採用之耦接結構係由以下所構成：一裝 配部份，其形成在該第一圓柱形空氣通道半邊部份之另一 端部；一被裝配部份，其形成在該第二圓柱形空氣通道半 邊部份之另一端部；複數嚙合構件，其與該第一凸緣部份 一體成形，並於該圓周方向中配置在諸間隔處；及複數被 嚙合構件，其與該第二凸緣部份一體成形，且於該圓周方 -8- 200918761 向中配置在諸間隔處。該裝配部份係裝配進入該被裝配部 份。該嚙合構件沿著該第一圓柱形空氣通道半邊部份延伸 。該被ta合構件沿者該第二圓柱形空氣通道半邊部份延伸 。該等嚙合構件係分別與該等被嚙合構件嚙合。複數第一 擋止件部份係與該第一凸緣部份一體成形，且配置毗連該 等嚙合構件，及沿著該第一圓柱形空氣通道半邊部份延伸 。複數第二擋止件部份係與該第二凸緣部份一體成形，且 配置峨連該等被嚙合構件’及沿著該第二圓柱形空氣通道 半邊部份延伸。當該複數嚙合構件係與該等被嚙合構件完 全地嚙合時’該等第一擋止件部份之前端係分別緊靠至該 等第二擋止件部份之前端上。 在本發明中’對於該耦接結構採用與該第一凸緣部份 一體成形之嚙合構件及與該第二凸緣部份一體成形之被嚙 合構件’該耦接結構耦接該第一及第二分開之外殼單元。 根據本發明’該第一及第二分開之外殼單元的耦接係不只 藉由一裝配結構、而且藉由該等嚙合構件及該等被嚙合構 件之嚙合所獲得’該裝配結構由該第一圓柱形空氣通道半 ^咅卩份之裝配部份及第二圓柱形空氣通道半邊部份之被裝 配部份所構成。其結果是，無力量集中將發生在該第一圓 柱形空氣通道半邊部份與該第二圓柱形空氣通道半邊部份 的裝配結構。再者，該第一及第二分開之外殼單元將不會 車莖易地斷開或分離。再者，在本發明中，該第一擋止件部 份被配置毗連該等嚙合構件，且該第二擋止件部份被配置 13比連該等被嚙合構件。如此，當該第一分開之外殼單元及 -9- 200918761 該第二分開之外殻單元被耦接時，縱使力量係集中及由該 第一凸緣部份與該第二凸緣部份施加至該等嚙合構件與該 等被嚙合構件’毗連該等嚙合構件的第一擋止件部份之前 端係分別緊靠至毗連該等被嚙合構件的第二擋止件部份之 前端。其結果是，縱使該等嚙合構件被強力地壓抵靠著該 等被嚙合構件，可防止該被嚙合構件與該嚙合構件、或該 嚙合構件本身嚙合之嚙合部份斷開。 較佳地是，當該第一及第二凸緣部份分別具有一配置 在該圓周方向中之輪廓形狀，而該輪廓形狀包括四角落， 即第一至第四角落時，四個該等嚙合構件及四個該等第一 擋止件部份係分別配置在該第一凸緣部份之該四角落附近 ，且四個該等被嚙合構件及四個該等第二擋止件部份係分 別配置在該第二凸緣部份之該四角落附近。然後，於該第 一凸緣部份中，二個該等嚙合構件係配置在該第一角落及 該第二角落之間所界定的一區域中，二個該等第一擋止件 部份係配置在該第二角落及該第三角落之間所界定的一區 域中，二個該等嚙合構件係配置在該第三角落及該第四角 落之間所界定的一區域中，且二個該等第一擋止件部份係 配置在該第四角落及該第一角落之間所界定的一區域中。 再者，於該第二凸緣部份中，二個該等被嚙合構件係配置 在該第一角落及該第二角落之間所界定的一區域中，二個 該等第二擋止件部份係配置在該第二角落及該第三角落之 間所界定的一區域中’二個該等被嚙合構件係配置在該第 三角落及該第四角落之間所界定的一區域中，且二個該等 -10- 200918761 第二擋止件部份係配置在該第四角落及該第一角落之間所 界定的一區域中。以此配置，其係易於確保一用於該第一 及第二凸緣部份之每一角落的空間。據此，該四個嚙合構 件、四個被嚙合構件、四個第一擋止件部份、及四個第二 擋止件部份可被配置在該圓周方向中。該第一及第二擋止 件部份被特別配置在該等嚙合構件及該等被嚙合構件之外 側。甚至當過度之力量係施加至該第一及第二凸緣部份之 四角落時，位在該嚙合與被嚙合構件外側之第一及第二擋 止件部份吸收外力。可防止該過度之力量施加至該等嚙合 與被嚙合構件。 較佳地是，該等嚙合構件係一體地耦接至該第一圓柱 形空氣通道半邊部份，且該等被嚙合構件係一體地耦接至 該第二圓柱形空氣通道部份。以此配置，該等嚙合與被嚙 合構件的機械強度可被改善。再者，在該等嚙合構件已與 該等被嚙合構件嚙合之後，該等嚙合與被嚙合構件具有增 強該第一及第二圓柱形空氣通道半邊部份之作用。 能以下列方式配置該等嚙合構件、被嚙合構件、及第 一與第二擋止件部份。當連接該四角落在該等旋轉式軸桿 的徑向中彼此相向的二角落之第一虛擬對角線、及連接該 四角落之其餘二角落的第二虛擬對角線被假設在該第一凸 緣部份中時，設置該嚙合構件及對應於該嚙合構件之第一 擋止件部份，以便在其間介入第一或第二虛擬對角線。再 者，該等嚙合構件及該等第一擋止件部份都未被設置在該 四角落，該第一或第二虛擬對角線通過該四角落。當連接 -11 - 200918761 該四角落在該等旋轉式軸桿的徑向中彼此相向的二角落之 第三虛擬對角線、及連接該四角落之其餘二角落的第四虛 擬對角線被假設在該第二凸緣部份中時，設置該被嚙合構 件及對應於該被嚙合構件之第二擋止件部份，以便在其間 介入第三或第四虛擬對角線。再者，該等被嚙合構件及該 等第二擋止件部份都未被設置在該四角落，該第三或第四 虛擬對角線通過該四角落。以此配置，當力量被施加至該 第一凸緣部份之四角落及該第二凸緣部份之四角落，以耦 接該第一及第二分開之外殻單元時，該等力量係於良好之 平衡中施加至該嚙合與被嚙合構件及該第一與第二擋止件 部份。該等嚙合構件可藉此牢牢地與該等被嚙合構件嚙合 ’且可確實地呈現該第一及第二擋止件部份之功能。 各種型式之嚙合與被嚙合構件可被使用。當該等嚙合 構件及該等被嚙合構件之一包括爪部時，譬如，該嚙合構 件及該被嚙合構件之另一個可包括一與該爪部嚙合之孔洞 部份。以此配置，當嚙合該嚙合構件與該被嚙合構件時， 該嚙合構件及該被嚙合構件之至少一個係彎曲的，且一旦 該嚙合構件係與該被嚙合構件完全地嚙合，該爪部及該孔 洞部份變得互相嚙合。然後，形成該孔洞部份，以便允許 目視確認與該孔洞部份嚙合的爪部之嚙合。以此配置，該 嚙合構件可僅僅藉由將該爪部彈性地插入該孔洞部份輕易 地與該被嚙合構件嚙合。再者，既然該孔洞部份被形成允 許用於目視確認與該孔洞部份嚙合的爪部之嚙合，該嚙合 可被目視地確認。據此，該等嚙合與被嚙合構件間之嚙合 -12- 200918761 可被輕易地確認。 較佳地是，設計該等嚙合構件及該等第一擋止 的形狀，使得當由該第一圓柱形空氣通道半邊部份 一凸緣部份時，不會突出該第一凸緣部份之外側。 設計該等被嚙合構件及該等第二擋止件部份的形狀 當由該第二圓柱形空氣通道半邊部份看該第二凸緣 ，不會突出該第二凸緣部份之外側。以此配置，甚 供該等嚙合構件、嚙合構件、及第一與第二檔止件 ，該反轉式軸流風扇的輪廓尺寸中之增加可被抑制 在本發明中，對於該耦接結構採用與該第一凸 一體成形之嚙合構件及與該第二凸緣部份一體成形 合構件，該耦接結構耦接該第一分開之外殼單元及 開之外殼單元。該第一分開之外殼單元及該第二分 殼單元的耦接係不只藉由一裝配結構、而且藉由該 件及該被嚙合構件所構成之嚙合結構所獲得，該裝 由該第一圓柱形空氣通道半邊部份之裝配部份及該 柱形空氣通道半邊部份之被嚙合部份所構成。其結 無力量集中將發生在該第一圓柱形空氣通道半邊部 第二圓柱形空氣通道半邊部份的裝配結構。再者， 及第二分開之外殼單元將不會輕易地斷開或分離。 在本發明中，該第一擋止件部份係提供毗連該等嚙 ，且該第二擋止件部份係提供毗連該等被嚙合構件 ，當該第一分開之外殼單元及該第二分開之外殼單 接時，縱使力量係集中及由該第一凸緣部份與該第 件部份 看該第 再者， ，使得 部份時 至當提 部份時 〇 緣部份 之被嚙 第二分 開之外 嚙合構 配結構 第二圓 果是， 份與該 該第一 此外， 合構件 。如此 元被耦 二凸緣 -13- 200918761 部份施加至該等嚙合構件與該等被嚙合構件，毗連該等嚙 合構件的第一擋止件部份之前端係分別緊靠至毗連該等被 嚙合構件的第二擋止件部份之前端。其結果是，縱使該等 嚙合構件被強力地壓抵靠著該等被嚙合構件，可防止該嚙 合構件與該被嚙合構件間之嚙合部份斷開。 【實施方式】 現在，將參考所附圖面詳細地敘述本發明之一具體實 施例。圖1係一橫截面視圖，顯示本發明的具體實施例中 之反轉式軸流風扇的半邊部份。如圖1所示，於此具體實 施例中’該反轉式軸流風扇包括外殼1、第一馬達3、第 一推進器5、第二馬達7'及第二推進器9。該外殼1包括 一外殼本體61’其包括一空氣通道2;—馬達支撐機架6 ’其設置在該空氣通道2的一中心部份中。再者，如圖2 至6所示，該外殼1係由經過一耦接結構耦接的第一分開 之外殼單元11及第二分開之外殻單元13所構成。圖2至 4分別係該外殻1之透視圖、該外殻1之平面圖、與該外 殼1之左側視圖。圖5係一局部橫截面視圖，如取自沿著 圖3中之剖線V - V。圖6係一橫截面視圖，如取自沿著圖 4中之剖線V I - V I。 該第一分開之外殼單元11係由合成樹脂或鋁所製成 。如圖7所示，該第一分開之外殼單元11 一體地包括第 一外殼本體半邊部份15及第一支撐機架半邊部份17。該 第一外殼本體半邊部份15包括第一凸緣部份19、第一圓 -14- 200918761 柱形空氣通道半邊部份2 1、四個嚙合構件2 3 A至2 3 D、 及四個第一擋止件部份25A至25D。該第一凸緣部份19 具有一大體上四邊形之輪廓，該四邊形具有四個角落。該 四個角落，即第一角落19a、第二角落19b、第三角落i9c 、及第四角落1 9d係設置在該第一馬達3的旋轉式軸桿7 i 及該第二馬達7的旋轉式軸桿171之圓周方向中，該等旋 轉式軸桿被配置在該相同之軸線A上。此方向在下文將僅 只被稱爲該圓周方向。該第一分開之外殼單元11在該外 殻1的一端部於軸線方向中具有一吸入開口之i 1 a，其將 被稍後敘述。第一空間S 1被界定於該外殻1中之馬達支 撐機架6及該吸入開口 1 1 a之間。該第一凸緣部份1 9之 四角落被製成圓形。然後，一穿透孔19e係形成在該四角 落之每一個中’ 一用於將該反轉式軸流風扇安裝至電器之 夾緊件係插入該穿透孔。該第一圓柱形空氣通道半邊部份 2 1的一端部係與該第一凸緣部份1 9 一體成形。該第一圓 柱形空氣通道半邊部份21在其中包含該第一空間S1之主 要部件。此第一圓柱形空氣通道半邊部份2 1在該旋轉式 軸桿7 1及1 7 1之軸線方向（在下文將僅只被稱爲該軸線方 向）中延伸。在該第一圓柱形空氣通道半邊部份21的另一 端部21a之外周邊部份的四個位置，在該等旋轉式軸桿71 及1 7 1的徑向（在下文將僅只被稱爲該徑向）中朝外突出之 壁面部份2 1 b係分別在等距間隔下形成於該圓周方向中。 在該第一圓柱形空氣通道半邊部份21的另一端部21a之 內周邊部份的諸位置’對應於該等壁面部份2 ；! b，線性地 -15- 200918761 延伸之平坦表面部份2 1 c被分別地形成。於此具體實施例 中，包括該等平坦表面部份21c的另一端部21a之內周邊 部份構成一裝配部份。 如圖3、4及7所示，該四個嚙合構件23A至23D係 與該第一凸緣部份19及該第一圓柱形空氣通道半邊部份 21 —體成形，且被配置在該圓周方向中之諸間隔處。該四 個嚙合構件2 3 A至2 3 D係分別與該第二分開之外殻單元 1 3的四個被嚙合構件4 1 A至4 1 D嚙合，這將被稍後敘述 。該四個嚙合構件2 3 A至2 3 D係分別配置在該四角落1 9 a 至19d之附近，被一體地耦接至該第一圓柱形空氣通道半 邊部份2 1。這些四個嚙合構件2 3 A至2 3 D在該軸線方向 中沿著該第一圓柱形空氣通道半邊部份2 1延伸，以致當 由該第一圓柱形空氣通道半邊部份21看該凸緣部份時， 該四個嚙合構件23A至23D不會由該第一凸緣部份19之 輪廓突出至外面。藉由使用圖5及7所示之嚙合構件23B 當作一典型之範例’且藉由將參考數字分派至該嚙合構件 23B之個別部份，一嚙合構件之結構將被敘述。該等嚙合 構件23A至23D之每一個包括二板件部份23a及23b與三 連接部份2 3 c至2 3 e ’該等連接部份被連接至該等板件部 份23a、23b。該等板件部份23a及23b係在一正交於該軸 線方向之方向中及一於圖5及7的頁面中之直立方向中彼 此相向。該三連接部份2 3 c至2 3 e被配置在該軸線方向中 之預定間隔處。該二連接部份2 3 c及2 3 d於該二板件部份 23a及23b之間完全地延伸在該直立方向中，且分割一界 -16- 200918761 定於該二板件部份2 3 a及2 3 b間之空間。該連接部份2 3 e 僅只連接該二板件部份2 3 a及2 3 b之上緣部份，由於該二 板件部份2 3 a及2 3 b之間稍微往下延伸。如此，一開口部 份23f係形成在該二板件部份23a及23b、該連接部份 23e、及該第一圓柱形空氣通道半邊部份21之中。一面朝 向上的孔洞部份23g係形成於該等連接部份23d及23e之 間。 該四個第一擋止件部份25A至25D分別具有一大體 上長方形之平板的形狀，並與該第一凸緣部份1 9 一體地 形成。該等第一擋止件部份之基底部份係一體地耦接至該 第一圓柱形空氣通道半邊部份21。該四個擋止件部份25A 至25D在該軸線方向中沿著該第一圓柱形空氣通道半邊部 份2 1延伸，以致當由該第一圓柱形空氣通道半邊部份2 i 看該第一凸緣部份時，該四個擋止件部份25A至25D不 會由該第一凸緣部份1 9之輪廓突出至外側。稍後將敘述 如何設置該四個第一擋止件部份25 A至25 D。 如圖7所示，該第一支撐機架半邊部份1 7包括第一 支撐機架本體半邊部份27及五個第一薄板條半邊部份 28 A至28E。該第一支撐機架本體半邊部份27包括一圚形 板件部份27b，在其中心中具有一開口部份27a ;及一周 邊壁面部份27c，其在該軸線方向中由該圓形板件部份 2 7b的一外周邊部份延伸。由黃銅所製成之第一金屬軸承 支撐座77被固定式地裝配進入該開口部份27a，如圖1所 示。該第一馬達3之定子板85係設置在一空間內，該空 -17- 200918761 間被該圓形板件部份27b及該周邊壁面部份27c所界定、 圍住’如圖1所示。於該第一支撐機架本體半邊部份27 中，形成四個第一穿透孔半邊部份29A至29D，其在該第 一馬達3的旋轉式軸桿71之軸線方向中通過該第一支撐 機架本體半邊部份27。該四個第一穿透孔半邊部份29A 至2 9D係形成在該圓周方向中之等距間隔處。該四個第一 穿透孔半邊部份29A至29D的一穿透孔半邊部份29A與 該第—薄板條半邊部份28A的第一引線導引路徑半邊部份 3 1之內部空間相通，其將被稍後敘述。 於該第一支撐機架本體半邊部份27的周邊壁面部份 2 7c及該第一外殻本體半邊部份1 5的內周邊表面之間，五 個第一薄板條半邊部份28 A至28E被設置在該圓周方向中 之預定間隔處，藉此耦接該第一支撐機架本體半邊部份2 7 與該第一外殼本體半邊部份1 5。該五個第一薄板條半邊部 份28A至28E之第一薄板條半邊部份28A構成一在其中 包括該第一引線導引路徑半邊部份3 1之薄板條半邊部份 。此第一薄板條半邊部份28A在下文將僅只被稱爲該第一 引線導引薄板條半邊部份2 8 A。如圖7及8所示，該第一 引線導引薄板條半邊部份2 8 A包括一底部壁面2 8 a及一對 彻J壁部份28b，該對側壁部份分別由該底部壁面28a朝向 該第二馬達7升起。如圖7所示，該第一引線導引路徑半 邊部份3 1被一區域所形成，該區域藉由該底部壁面28a 及該對側壁部份2 8b所圍住。如圖8所示，一凸起或凸出 部份28d係形成在該對中之側壁部份28b上，且突出朝向 -18- 200918761 將被稍後敘述之第二引線導引薄板條半邊部份55A。然後 ’一凹陷朝向該底部壁面2 8 a之凹陷或凹入部份2 8 e係亦 形成在該對中之該側壁部份28b中。於此具體實施例中， 設在該對中之側壁部份2 8 b之一的該凸起部份2 8 d及該凹 入部份28e ’係於該圓周方向中分別相向於設在該對中之 另一邊壁面部份28b的該凸起部份28d及該凹入部份28e 。該凸起部份2 8 d及該凹入部份2 8 e之輪廓形狀係分別爲 一具有相等長度之二非平行相向側邊的等腰梯形。該凸起 部份2 8 d及該凹入部份2 8 e分別具有二傾斜表面，其對應 於相等長度之非平行相向側邊的梯形之對，且該凸起部份 2 8 d的二傾斜表面2 8 d 1之一係與毗連該凸起部份2 8 d之凹 入部份28e的二傾斜表面28el之一爲連續的。該凸起部 份2 8d朝向該第二引線導引薄板條半邊部份55A突出超過 一虛擬參考分開平面F。該虛擬參考分開平面F係該分開 之平面，一馬達支撐機架係沿著該平面被分成二部份，即 將被稍後敘述之該第一支撐機架半邊部份17與該第二支 撐機架半邊部份35。然後’除了在形成該凸起部份28d及 該凹入部份2 8 e之部份以外，該對中之每一側壁部份2 8 b 的一端部表面28f位在或係於該虛擬參考分開平面f中。 再者，如圖4所示，於一接合該第一引線導引薄板條半邊 部份2 8 A的位置之附近’一開口部份2 ! d係所形成在該第 一圓柱形空氣通道半邊部份2 1中，該開口部份打開朝向 該第一引線導引薄板條半邊部份2 8 A之內側。引線l係經 過該開口部份21d引出。 -19- 200918761 該第二分開之外殼單元13係亦由合成樹脂或鋁所製 成。如圖9所示，該第二分開之外殼單元1 3 —體地包括 第二外殼本體半邊部份33及第二支撐機架半邊部份35。 該第二外殼本體半邊部份33包括第二凸緣部份37、第二 圓柱形空氣通道半邊部份3 9、四個嚙合構件4 1 A至4 1 D 、及四個第二擋止件部份43A至43D。該第二凸緣部份 37具有一大體上四邊形之輪廓，該四邊形具有四角落。該 四角落，即第一角落37a、第二角落37b、第三角落37c、 及第四角落37d被設置在該圓周方向中。該第二凸緣部份 3 7在該外殼1之另一端部於該軸線方向中具有一排出開口 13a。第二空間S2被界定於該外殼1中之馬達支撐機架6 及該排出開口 13a之間。該第二凸緣部份37之四角落37a 至37d被製成圓形的，且在該四角落之每一個中形成一穿 透孔3 7e，一用於將該反轉式軸流風扇安裝至電器之夾緊 件係插入該穿透孔。該第二圓柱形空氣通道半邊部份3 9 的一端部係與該第二凸緣部份3 7 —體成形。該第二圓柱 形空氣通道半邊部份39在其中包含該第二空間S2之主要 部件。 四個平坦表面部份4 5係在等距間隔下於該圓周方向 中形成在該第二圓柱形空氣通道部份39的另一端部39a 之外周邊部份（被裝配部份）上。當該第一分開之外殼單元 1 1及該第二分開之外殼單元〗3被耦接時，該四個平坦表 面部份45與該第一圓柱形空氣通道半邊部份2 1的另一端 部2 1 a之平坦表面部份2〗c造成接觸。該第一分開外殼單 -20- 200918761 元11及該第二分開外殼單元13於該圓周方向中之定位係 藉由對齊該等平坦表面部份21c及該等平坦表面部份45 所決定。 該四個被嚙合構件41A至41D係與該第二凸緣部份 37 —體成形，且被配置在該圓周方向中之諸間隔處。該四 個嚙合構件4 1 A至4 1 D係分別設置該第二凸緣部份3 7的 四角落37a至37d之附近，使該四個被嚙合構件41A至 41D被一體地耦接至該第二圓柱形空氣通道半邊部份39。 該四個被嚙合構件4 1 A至4 1 D沿著該第二圓柱形空氣通 道半邊部份3 9於該軸線方向中延伸，以致當由該第二圓 柱形空氣通道半邊部份39看該第二凸緣部份時，該四個 被嚙合構件41A至41D不會由該第二凸緣部份37之輪廓 突出外側。藉由使用圖5及9所示之被嚙合構件4 1 B當作 一典型之範例，且藉由將參考數字分派至該嚙合構件4 1 B 之個別部份，一被嚙合構件4 1 B之結構將被敘述。該等被 嚙合構件41A至41D之每一個包括一體地設在該第二凸 緣部份27之支撐部份47、一耦接至該支撐部份47及該第 二圓柱形空氣通道半邊部份3 9之肋條4 9、及使其一端部 被該支撐部份47所支撐之扣爪形成構件5 1。該扣爪形成 構件5 1包括像板件部份5 1 a、與該像板件部份5 1 a —體成 形之爪部5 1 b、及突出部份5 1 c。該像板件部份5 1 a係連 接至該支撐部份47，被由該肋條49隔開。該像板件部份 51a由該支撐部份47延伸朝向該第一分開之外殻單元1 1 。該爪部5 1 b由該像板件部份5 1 a的一前端於一正交於該 -21 - 200918761 像板件部份51a之表面的方向中、或於圖5的頁面中之向 上方向中突出。該爪部51b之上側面具有一傾斜表面5id ，以致該爪部5 1 b之厚度朝向該支撐部份4 7更多地增加 。特別地是，該等被嚙合構件4 1 A及4 1 B之個別爪部5 1 b 在圖9的頁面中之向上方向中突出，而該等被嚙合構件 41C及41D之個別爪部51b在圖9的頁面中之往下方向中 突出。該突出部份5 1 c係於該軸線方向中由該爪部5 1 b隔 開。該突出部份5 1 c由該像板件部份5 1 a於與該爪部5 1 b 突出之同一方向中突出。該突出部份51c之橫截面表面的 形狀大體上係一長方形。將稍後詳細地敘述該四個被嚙合 構件4 1 A至4 1 D如何與該第一分開之外殼單元1 1的四個 嚙合構件2 3 A至2 3 D分別地嚙合。 該四個第二擋止件部份43A至43D具有與該第二凸 緣部份3 7 —體成形的長方形之平板的形狀，且係分別配 置B比連該四個被嚙合構件41A至41D。該四個第二檔止件 部份43A至43D被一體地耦接至該第二圓柱形空氣通道 半邊部份39。該四個第二擋止件部份43 a至43D沿著該 第一圓柱形空氣通道半邊部份3 9於該軸線方向中延伸， 以致當由該第二圓柱形空氣通道半邊部份39看該第二凸 緣部份時’該四個第二擋止件部份43A至43D不會由該 第二凸緣部份3 7之輪廓突出外側。該第一角落3 7a及該 第二角落3 7 c係於該徑向中相對於該軸線a彼此相向。該 被嚙合構件4 1 A及4 1 C係亦於該徑向中彼此相向。該第二 擋止件部份4 3 A及4 3 C被分別提供用於該被嚙合構件4 j a -22- 200918761 及4 1 C。特別地是’當假設一連接該第二凸緣部份3 7的 第一角落37a及第三角落37c之虛擬對角線D3時，如圖 6及9所示，配置該被嚙合構件4 1 A及該第二擋止件部份 4 3 A，以便使該虛擬對角線D 3介入在其間，且配置該被 嚙合構件4 1 C及該第二擋止件部份43 C，以便使該虛擬對 角線D3介入在其間。同樣地，該第二角落37b及該第四 角落3 7 d係於該徑向中相對於該軸線A彼此相向。該被嚙 合構件4 1 B及4 1 D係亦於該徑向中彼此相向。該第二擋止 件部份43B及43D被分別提供用於該被嚙合構件41B及 4 1 D。當假設一連接該第二凸緣部份3 7之剩餘二角落的第 二角落37b及第四角落37d之虛擬對角線D4時，配置該 被嚙合構件4 1 B及該第二擋止件部份4 3 B，以便使該虛擬 對角線D4介入在其間，且配置該被嚙合構件4 1 D及該第 二擋止件部份43D，以便使該虛擬對角線D4介入在其間 。然後，在該等虛擬對角線D3及D4(該第三與該第四虛 擬對角線）通過該四角落37a至37d之處，皆未配置該等 被嚙合構件4 1 A至4 1 D及該等第二擋止件部份4 3 A至 43D。換句話說，於一界定於該第二凸緣部份3 7的第一角 落3 7 a及第二角落3 7 b間之區域中，配置該被嚙合構件 41A及41B，且於—界定於該第二角落37b及該第三角落 3 7 c間之區域中，配置該第二擋止件部份4 3 b及4 3 C。然 後’於一界定於該第三角落37c及該第四角落37d間之區 域中’配置該被嚙合構件4 1 C及4 1 D，且於一界定於該第 四角落3 7d及該第—角落37a間之區域中，配置該第二擋 -23- 200918761 止件部份43D及43A。 圖4及7所示之四個第一擋止件部份25A至25D係 亦分別配置阳：連該四個嚙合構件23A至23D。該四個第一 擋止件25A至25D及該四個嚙合構件23A至23D之中的 一位置關係’是與圖6所示該四個第二擋止件部份43A至 43D及該四個被嚙合構件41A至41D之中的位置關係相同 。如圖7所示’該第一角落19a及該第三角落i9c係在該 徑向中相對於該軸線A彼此相向的。該嚙合構件23 a及 2 3 C係於該徑向中彼此相向。該第一擋止件部份2 5 a及 2 5 C被分別提供用於該嚙合構件2 3 A及2 3 C。特別地是， 當如圖7所示假設一連接該該第一凸緣部份19的第一角 落19a及第三角落19c之虛擬對角線D1時，配置該嚙合 構件2 3 A及該第一擋止件部份2 5 A，以便使該虛擬對角線 D 1介入在其間’且配置該嚙合構件23 C及該第一擋止件 部份2 5 C，以便可該虛擬對角線D 1介入在其間。該第二 角落19b及該第四角落19d係在該徑向中相對於該軸線A 彼此相向。該嚙合構件2 3 B及2 3 D係於該徑向中彼此相向 。該第一擋止件部份25 B及25D被分別提供用於該嚙合構 件2 3 B及2 3 D。當假設一連接該第一凸緣部份1 9之剩餘 二角落19的第二角落19b及第四角落19d之虛擬對角線 D2時，配置該嚙合構件23B及該第一擋止件部份25B， 以便使該虛擬對角線D2介入在其間，且配置該嚙合構件 23D及該第一擋止件部份25D，以便使該虛擬對角線D2 介入在其間。然後’在該等虛擬對角線及D2(該第一 -24- 200918761 與第二虛擬對角線）通過的四角落19a至 配置該嚙合構件23A至23D及該第一擋」 25D。換句話說，在一界定於該第一凸緣音: 落19a及第二角落19b間之區域中，配置 及23B，且在一界定於該第二角落19b及 間之區域中，配置該第一擂止件部份25B 在一界定於該第三角落19c及該第四角落 ，配置該嚙合構件23C及23D，且在一界 19d及該第一角落19a間之區域中，配置 份25D及25A。設計該四個第一擋止件商 及該四個第二擋止件部份43A至43D之 致當該等爪部5 1 b係分別與該等嚙合構件 孔洞部份2 3 g完全地嚙合時，該四個第一 至25D之前端係分別緊靠至該四個第二； 至4 3 D之前端。 如圖9所不，該第二支撐機架半邊部 第二支撐機架本體半邊部份53及五個第 份55A至55E。該第二支撐機架本體半邊 圓形板件部份5 3 b，在其中心中具有一開 一周邊壁面部份53c，其在該軸線方向中 份5 3 b的一外周邊部份延伸。由黃銅所製 承支撐座1 77被固定式地裝配進入該開口 1所示。該第二馬達7之定子板i 8 5係設 該空間被該圓形板件部份5 3 b及該周邊壁 1 9 d之處’皆未 1：件部份2 5 A至 Μ分1 9的第一角 該嚙合構件2 3 A 該第三角落19c 及25C。然後， 19d間之區域中 定於該第四角落 該第一擋止件部 Η分 25A 至 25D 形狀及尺寸，以 23Α至23D之 擋止件部份25Α 隱止件部份43Α 份3 5包括一個 二薄板條半邊部 部份5 3包括一 口部份5 3 a ;及 由該圓形板件部 成之第二金屬軸 部份5 3 a，如圖 置在一空間內， 面部份5 3 c所圍 -25- 200918761 住’如圖1所示。於該第二支撐機架本體半邊部份5 3中 ’形成四個第二穿透孔半邊部份57A至57D，其在該第二 馬達7的旋轉式軸桿丨7丨之軸線方向中通過該第二支撐機 架本體半邊部份53，其將被稍後敘述。該四個第二穿透孔 半邊部份57A至57D係形成在該旋轉式軸桿171的圓周 方向中之等距間隔處（圖1所示）。該四個第二穿透孔半邊 部份57A至57D的一穿透孔半邊部份57A與該第二薄板 條半邊部份55A的第二引線導引路徑半邊部份59之內部 空間相通’其將被稍後敘述。該四個第二穿透孔半邊部份 57A至57D係形成分別具有與該第一支撐機架本體半邊部 份27的四個第一穿透孔半邊部份29A至29D相同之形狀 。於該第二支撐機架本體半邊部份53的周邊壁面部份53c 及該第二外殼本體半邊部份33的一內周邊表面之間，該 五個第二薄板條半邊部份55 A至55E被配置在該圓周方向 中之預定間隔處，藉此連接該第二支撐機架本體半邊部份 53與該第二外殼本體半邊部份33。該五個第二薄板條半 邊部份55A至55E之第二薄板條半邊部份55A構成該薄 板條半邊部份，並在其中包括第二引線導引路徑半邊部份 5 9。如此，該第二薄板條半邊部份5 5 A將在下文僅只被稱 爲該第二引線導引薄板條半邊部份55A。該第二引線導引 薄板條半邊部份55A包括一底部壁面55a及一對側壁部份 5 5b，該對側壁部份分別由該底部壁面55a升起。該第二 引線導引路徑半邊部份59被一區域所形成，該區域被該 底部壁面55a及該對側壁部份55b所圍住。一突出朝向該 -26- 200918761 第一引線導引薄板條半邊部份2 8 A之凸起或凸出部份5 5 d 係形成在該對中之側壁部份5 5 b上。然後，一凹陷朝向該 底部壁面5 5 a之凹陷或凹入部份5 5 e係亦形成在該對中之 側壁部份5 5 b中。於此具體實施例中，設在該對中之側壁 部份55b之一的凸起部份55d及凹入部份55e，係在該圓 周方向中分別相向於設在該對中之另一邊壁面部份5 5 b的 該凸起部份55d及該凹入部份55e。如圖8所示，該凸起 部份5 5 d朝向該第一引線導引薄板條半邊部份2 8 A突出超 過該虛擬參考分開平面F，該分開平面係該馬達支撐機架 沿著其被分成該第一支撐機架半邊部份17及該第二支撐 機架半邊部份3 5的分開平面。如圖4及9所示，於一接 合該第二引線導引薄板條半邊部份5 5 A的位置之附近，一 打開朝向該第二引線導引薄板條半邊部份5 5 A之內側的開 口部份3 9 d ’係形成在該第二圓柱形空氣通道半邊部份3 9 中。其將詳細地敘述該第一引線導引薄板條半邊部份28A 及該第二引線導引半邊部份5 5 A係如何耦接。 於此具體實施例之反轉式軸流風扇中，該第一分開之 外殼單兀1 1及該第二分開之外殼單元1 3係以下列方式親 接。實際上，該第一馬達3(圖1所示）及該第一推進器5 被配置在該第一分開之外殻單元11內，且引線被配置在 該第一引線導引薄板條半邊部份2 8 A內。如此組裝第一軸 流風扇單元。然後，該第二馬達7(圖1所示）及該第二推 進器9被配置在該第二分開之外殼單元13內，且該等引 線被配置在該第二引線導引薄板條半邊部份5 5 A內。如此 -27- 200918761 組裝第二軸流風扇單元。然後，藉由耦接該第一軸流風扇 單元及該第二軸流風扇單元，該第一分開之外殼單元11 及該第二分開之外殼單元1 3被耦接。首先，該第一分開 之外殼單元1 1及該第二分開之外殼單元1 3被帶至彼此接 近，且接著該第二分開之外殻單元13的四個被嚙合構件 4 1 A至4 1 D之爪部5 1 b的前端’係分別插入該第一分開之 外殼單元1 1的四個嚙合構件23 A至23D之開口部份23 f 。參考圖5，當該被嚙合構件41B及該嚙合構件23 B在該 插入之後被帶至彼此接近時，該爪部5 1 b之傾斜表面5 1 d 與該連接部份23e的一下緣造成接觸。藉由該傾斜表面 5 1 d及該連接部份2 3 e間之接觸，該像板件部份5 1 a彎曲 ，以便較接近至該肋條49。當該被嚙合構件4丨B及該嚙 合構件2 3 B被進一步帶至彼此接近，且接著釋放該傾斜表 面5 1 d及該連接部份2 3 e間之接觸時，該連接部份2 3 e被 裝配進入一被界定於該被嚙合構件41B的爪部51b及凸起 部份5 1 c間之凹陷或凹入部份。該爪部5 1 b係藉此與該孔 洞部份23g嚙合。這完成該嚙合構件23B及該被嚙合構件 4 1 B間之嚙合。於此結構中，該肋條4 9用作一擋止件， 其防止該扣爪形成構件5 1超過所需地彎曲。該突出部份 51c具有一擋止件之作用，其防止該爪部51b運動朝向該 第一圓柱形空氣通道半邊部份2 1。於此具體實施例中，形 成該爪部51b及該孔洞部份23g，以便當該爪部5 lb係與 該孔洞部份2 3 g嚙合時允許該嚙合之目視確認。 爲了獲得如上面所述之嚙合，藉由該第一圓柱形空氣 -28- 200918761 通道半邊部份2 1的另一端部2 1 a之內周邊表面部份所形 成的裝配部份，係裝配進入藉由該第二圓柱形空氣通道半 邊部份3 9的另一端部3 9a之外周邊表面部份所形成的裝 配部份，藉此形成一裝配結構。該第一分開之外殼單元11 係耦接至該第二分開之外殼單元1 3 ’不只藉由上面所論及 之裝配結構，同時也藉由上面所論及之爪部5 1 b及該嚙合 構件2 3 A至2 3 D的孔洞部份2 3 g之嚙合。然後，如上面 所述使該第一分開之外殻單元1 1耦接至該第二分開之外 殼單元13，該第一擋止件部份25A至25D之前端係分別 緊靠至該四個第二擋止件部份43 A至43D之前端。 一外殻本體6 1係由包括於該第一分開外殼單元1 1中 之第一外殼本體半邊部份1 5、及包括於該第二分開外殼單 元1 3中之第二外殼本體半邊部份3 3所構成’該等部份係 如上面所論及地耦接及如圖2所示。再者，一馬達支撐機 架63係由包括於該第一分開外殼單兀11中之第一支撐機 架半邊部份17、及包括於該第二分開外殼單元13中之第 二支撐機架半邊部份3 5所構成。換句話說，如圖8所示 ，藉由沿著在該徑向中延伸之虛擬參考分開平面F將該馬 達支撐機架63分成二部份，獲得該第一支撐機架半邊部 份17及該第二支撐機架半邊部份35。再者，一支撐機架 本體65係由包括於該第一支撐機架半邊部份17中之第一 支撐機架本體半邊部份27、及包括於該第二支撐機架半邊 部份3 5中之第二支撐機架本體半邊部份5 3所構成。以此 配置，該第一分開之外殼單元1 1的第一穿透孔半邊部份 -29- 200918761 29 A至29D係分別與該第二分開之外殻單元13的第二穿 透孔半邊部份5 7 A至5 7 D結合’藉此形成四個穿透孔6 7 A 至67D。該四個穿透孔6 7A至67D局部地界定該支撐機架 本體65的一內部空間IS。再者，包括於該第一支撐機架 半邊部份17中之五個第一薄板條半邊部份28 A至28E ’ 係分別與包括於該第二支撐機架半邊部份3 5中之五個第 二薄板條半邊部份55A至55E結合，藉此形成五個薄板條 69A至69E。該五個薄板條69A至69E構成固定不動之葉 片。然後，該五個薄板條69A至69E之薄板條69A構成 該引線導引薄板條69A。此引線導引薄板條69A係藉由組 合該第一引線導引薄板條半邊部份28A與該第二引線導引 薄板條半邊部份55A所構成。於此引線導引薄板條69A 中，如圖8所示，該第一引線導引薄板條半邊部份2 8 A之 凸起部份28d係裝配進入該第二引線導引薄板條半邊部份 5 5 A之凹入部份5 5 e，且該第一引線導引薄板條半邊部份 2 8 A之凹陷或凹入部份2 8 e係與該第二引線導引薄板條半 邊部份5 5 A之凸起或凸出部份5 5 d裝配。然後，一引線導 引路徑GP(如圖2所示）係形成在該引線導引薄板條69A 內。該引線導引路徑GP導引用於供給電力至該第一馬達 3及該第一馬達7之複數引線及複數信號線。然後，如圖 4所不，藉由虛線所示之複數引線L係由該引線導引薄板 條69A之引線導引路徑經過該等開口部份2ld及39d引出 。該五個薄板條69A至69E之剩餘四個薄板條69]8至69E 係沿著該虛擬參考分開平面F分別被分成該第一薄板條半 -30- 200918761 邊部份2 8 B及該第二薄板條半邊部份5 5 B、該第一薄板條 半邊部份28C及該第二薄板條半邊部份55C、該第一薄板 條半邊部份28D及該第二薄板條半邊部份55D、與該第一 薄板條半邊部份28E及該第二薄板條半邊部份55E。 再次參考圖1’該第一馬達3包括該旋轉式軸桿71、 定子73、及轉子75。該旋轉式軸桿71係藉由裝配進入該 第一軸承支撐座77之二軸承79可旋轉地支撐在該第一軸 承支撐座7 7上。 該定子73包括定子鐵心8 1、激磁線圏8 3、及電路板 8 5 °該定子鐵心8 1係藉由層疊複數鋼板所形成，且被固 定至該第一軸承支撐座77。該定子鐵心81包括複數配置 在該旋轉式軸桿7 1的圓周方向中之突出磁極部份8 1 a。該 等激磁線圈8 3係分別經過絕緣子8 4附接至該等突出磁極 部份8 1 a。該電路板8 5係沿著該第一支撐機架本體半邊部 份27配置’並設置成由該第一支撐機架本體半邊部份27 隔開達預定間距。一用於使激磁電流流至該激磁線圈83 之激磁電流供給電路被安裝在該電路板8 5上。於此具體 實施例中’該電路板8 5上之激磁電流供給電路及該等激 磁線圈8 3係藉由環繞著一尾銷8 7的激磁線圈8 3之盤繞 引線電連接’該尾銷通過該電路板8 5的一穿透孔與被軟 焊至該電路板8 5上之電極。在該電路板8 5中，形成複數 電路板穿透孔8 5 a。該電路板穿透孔8 5 a係在等距間隔處 形成該旋轉式軸桿71的圓周方向中。已由環繞著該定子 73流向該第一支撐機架本體半邊部份27的四個第一穿透 -31 - 200918761 孔半邊部份29 A至29D之空氣通過該等電路板穿透孔85a 〇 該轉子75包括一環狀構件89及複數固定至該環狀構 件89的內周邊表面上之永久磁鐵91。該環狀構件89被固 定在該第一推進器5的杯狀構件93之周邊壁面部份93 a 內側，其將被稍後敘述。 如圖1 〇所示’該第一推進器5包括該杯狀構件93及 九片葉片95。該杯狀構件93包括該周邊壁面部份93a， 該九片葉片95被固定至該周邊壁面部份上；及一底部壁 面部份93b，其與該周邊壁面部份93a的一端部一體成形 。該第一馬達3之旋轉式軸桿71的一端部被連接至該底 部壁面部份9 3 b。複數通風孔9 3 c係形成在該底部壁面部 份93 b中’且係在等距間隔處設置於該旋轉式軸桿7 1之 圓周方向中。每一通風孔93c具有一修長形狀，其在該第 一馬達3的旋轉式軸桿71之徑向中延伸。該等通風孔9 3 c 具有將經過該吸入開口 1 1 a所吸入之空氣導入該第一馬達 3的內部空間之作用。 如上面所述，該轉子75之環狀構件89被固定在該第 一推進器5的杯狀構件93之周邊壁面部份93a的內側。 如此，该第一推進器5被該第一馬達3於第一旋轉方向 R1中在該第一空間S 1內旋轉，該第—旋轉方向係圖i 〇 的頁面中之逆時針方向。 如圖1所示，該第二馬達包括該旋轉式軸桿171、定 子173、及轉子175。該旋轉式軸桿171係藉由裝配進入 -32- 200918761 該第二軸承支撐座177之二軸承179可旋轉地支撐在該第 二軸承支撐座177上。該旋轉式軸桿ι71在一與該第—馬 達3的旋轉式軸桿7 1之旋轉方向相反的方向中旋轉。該 旋轉式軸桿1 7 1、定子1 7 3、及轉子1 7 5之結構係分別與 該第一馬達3之旋轉式軸桿71、定子73、及轉子75相同 。如此’ 1 00被加至分派給該第一馬達3之旋轉式軸桿、 定子、及轉子的參考數字’且該第二馬達7之旋轉式軸桿 '定子、及轉子的敘述將被省略。 如圖1所示，該第二推進器9包括一杯狀構件1 9 3及 七片葉片195。該杯狀構件193包括一周邊壁面部份193a ’該七片葉片195被固定至該周邊壁面部份上；及—底部 壁面部份1 9 3 b，其與該周邊壁面部份1 9 3 a的一端部一體 成形。該第二馬達7之旋轉式軸桿1 7 1的一端部被固定至 該底部壁面部份193b上。複數通風孔193c係形成在該底 部壁面部份193b中，且於該旋轉式軸桿171之圓周方向 中被設置在等距間隔處，並設置成由該旋轉式軸桿1 7 1隔 開。每一通風孔193c具有一修長之弧形，且在該第二馬 達7的旋轉式軸桿17ι之圓周方向中延伸。該等通風孔 1 93c具有將被導入該第二馬達7之內部空間的空氣排出至 外側之作用。如圖1所示，該第二馬達7的轉子17 5之環 狀構件1 89被固定在該第二推進器9的杯狀構件1 93之周 邊壁面部份排出1 9 3 a排出。如上面所述，該第二馬達7 之旋轉式軸桿171在與該第一馬達3的旋轉式軸桿71之 旋轉方向相反的方向中旋轉。如此’該第二推進器9被該 -33 - 200918761 第二馬達7於第二旋轉方向R2中在該第二空間S2內所旋 轉’該第—旋轉方向係與該第一旋轉方向R1相反，且係 於圖1 1的頁面中之順時針方向中。 於此具體實施例中之反轉式軸流風扇中，當該第一推 進器5在該第一旋轉方向中旋轉，且該第二推進器旋轉9 在與該第一旋轉方向相反之第二旋轉方向中旋轉時，經過 該吸入開口 1 1 a吸入之空氣係由該排出開口丨3 &排出，如 圖1所示，藉此冷卻該電器之內側。 於此具體實施例中之反轉式軸流風扇中，至少一凸起 部份2 8係設在該對第一薄板條半邊部份2 8 A至2 8 E中之 側壁部份2 8 b ’且至少一凸起或凸出部份5 5 d係設在該對 第二薄板條半邊部份5 5 A至5 5 E中之側壁部份5 5 b。然後 ’該凸起部份28d及55d延伸超過該虛擬參考分開平面f 。該側壁部份28b及55b之高度可被藉此增加。其結果是 ’引線可爲更不可能由該等側壁部份2 8 b之間及該等側壁 部份5 5b之間突出或引出。再者，當該第一及第二分開之 外殼單元被耦接時，複數引線可爲更不可能夾在該第一薄 板條半邊部份28A至28E及該第二薄板條半邊部份55A 至5 5E的側壁部份之間。於本發明之反轉式軸流風扇中， 與該第一凸緣部份19 —體成形之嚙合構件23A至23D及 與該第二凸緣部份3 7 —體成形之被嚙合構件4 1 A至4 1 D 被採用於該耦接結構，其耦接該第一分開之外殼單元i i 與該第二分開之外殼單元13。因此，不只藉由該嚙合構件 23A至23D及該被嚙合構件41A至41D之嚙合、以及藉 -34- 200918761 由該第一圓柱形空氣通道半邊部份21的另一端部21a與 該第二圓柱形空氣通道部份3 9的另一端部3 9 a之裝配， 獲得該第一分開之外殼單元U及該第二分開之外殻單元 I3的耦接。其結果是’無力量集中將發生在該第一圓柱形 空氣通道半邊部份與該第二圓柱形空氣通道部份的裝配結 構。再者，該第一及第二分開之外殻單元將不會輕易地斷 開或分離。此外，該等第一擋止件部份2 5 A至2 5 D係分 別提供毗連該嚙合構件2 3 A至2 3 D，且該第二擋止件部份 4 3 A至4 3 D係分別提供毗連該等被嚙合構件4 1 A至4 1 D。 如此’當該第一分開之外殼單元11及該第二分開之外殻 單元1 3被耦接時，縱使力量係集中及由該第一凸緣部份 1 9及該第二凸緣部份3 7施加至該等嚙合構件2 3 A至2 3 D 及該等被嚙合構件4 1 A至4 1 D，毗連該嚙合構件23 A至 2 3 D的第一擋止件部份2 5 A至2 5 D之前端係分別緊靠至毗 連該被嚙合構件4 1 A至4 1 D的第二擋止件部份4 3 A至 43D之前端。其結果是，縱使該嚙合構件23 A至23D被強 力地壓抵靠著該被嚙合構件4 1 A至4 1 D，其可爲可能防止 該嚙合構件23A至23D及該被嚙合構件41A至41D互相 嚙合的嚙合部份之斷裂。 雖然已參考該等圖面用某一程度之特異性敘述本發明 之較佳具體實施例，以上面教導之觀點，明顯之修改及變 化係可能的。因此應了解在所附申請專利之範圍內，本發 明可被異於如所特別敘述之方式實現。 -35- 200918761 【圖式簡單說明】 當關於所附圖面考慮時，本發明之這些及其他目的及 許多附隨之優點將被輕易地體會，因其藉由參考以下之詳 細敘述變得較佳了解。 圖1係一橫截面視圖’顯示本發明的一具體實施例中 之反轉式軸流風扇的半邊部份。 圖2係圖1所示該反轉式軸流風扇之外殼的透視圖。 圖3係圖1所示該反轉式軸流風扇之一平面圖。 圖4係圖1所示該反轉式軸流風扇之左側視圖。 圖5係一局部橫截面視圖，如取自沿著圖3中之剖線 V-V。 圖6係一橫截面視圖，如取自沿著圖4中之剖線VI - VI。 ® 7係圖1所示該反轉式軸流風扇之第一分開外殼單 元的透視圖。 ® 8係一圖解’用於說明如何配置圖1所示該反轉式 軸流®I ®之引線導引薄板條。 ΙΒϊ 131 9係圖1所示該反轉式軸流風扇之第二分開外殼單 元的透視圖。 1 〇係圖1所示該反轉式軸流風扇之第一推進器的 透視圖。 圖11係圖1所示該反轉式軸流風扇之第二推進器的 透視圖。 -36- 200918761 【主要元件符號說明】 1 :外殼 2 :空氣通道 3 :第一馬達 5 :第一推進器 6 :馬達支撐機架 7 :第二馬達 9 :第二推進器 1 1 :外殼單元 1 1 a :吸入開口 1 3 :外殼單元 1 3 a :排出開口 1 5 :外殼本體半邊部份 1 7 :外殼本體半邊部份 1 9 :凸緣部份 1 9 a :角落 19b :角落 1 9 c :角落 1 9d :角落 2 1 :空氣通道半邊部份 2 1 a :另一端部 2 1 b :壁面部份 2 1 c :平坦表面部份 2 1 d :開口部份 -37- 200918761 2 3 A :嚙合構件 2 3 a :板件部份 2 3 B :嚙合構件 2 3 b :板件部份 2 3 C :嚙合構件 23c :連接部份 2 3 D :嚙合構件 2 3 d :連接部份 23e :連接部份 2 3 f :開口部份 2 3 g :孔洞部份 2 5 A :擋止件部份 25B :擋止件部份 25C :擋止件部份 25D :擋止件部份 2 7 :支撐機架本體半邊部份 2 7 a :開口部份 27b :板件部份 27c :壁面部份 2 8 A :薄板條半邊部份 2 8 a :底部壁面 2 8 B :薄板條半邊部份 2 8 b :側壁部份 2 8 C :薄板條半邊部份 -38 200918761 2 8 D :薄板條半邊部份 28d :凸出部份 2 8 d 1 :傾斜表面 28E :薄板條半邊部份 2 8 e :凹入部份 2 8 e 1 :傾斜表面 2 8 f :端部表面 29A :穿透孔半邊部份 29B :穿透孔半邊部份 29C :穿透孔半邊部份 29D :穿透孔半邊部份 31 =引線導引路徑半邊部份 3 3 :外殼本體半邊部份 3 5 :支撐機架半邊部份 3 7 :凸緣部份 37a :角落 37b :角落 37c :角落 37d :角落 3 7e :穿透孔 3 9 :空氣通道半邊部份 3 9a :另一端部 3 9 d :開口部份 4 1 A :被嚙合構件 -39 200918761 4 1 B :被嚙合構件 4 1 C :被嚙合構件 4 1 D :被嚙合構件 43A :擋止件部份 43B :擋止件部份 43C :擋止件部份 43D :擋止件部份 4 5 :平坦表面部份 47 :支撐部份 4 9 :肋條 5 1 :扣爪形成構件 5 1 a :像板件部份 5 1 b :爪部 5 1 c :突出部份 5 1 d :傾斜表面 5 3 :支撐機架本體半邊部份 5 3 a :開口部份 5 3 b :板件部份 5 3 c :壁面部份 5 5 A :引線導引薄板條半邊部份 5 5 a :底部壁面 5 5 B :薄板條半邊部份 5 5 b :側壁部份 5 5 C :薄板條半邊部份 -40 200918761 5 5 D :薄板條半邊部份 5 5 d :凸出部份 5 5 E :薄板條半邊部份 5 5 e :凹入部份 5 7A :穿透孔半邊部份 5 7B :穿透孔半邊部份 5 7 C :穿透孔半邊部份 5 7D :穿透孔半邊部份 59 :引線導引路徑半邊部份 6 1 :外殼本體 63 :馬達支撐機架 6 5 :支撐機架本體 67A :穿透孔 67B :穿透孔 6 7 C :穿透孔 67D :穿透孔 6 9 A :薄板條 6 9 B :薄板條 6 9 C :薄板條 6 9 D :薄板條 69E :薄板條 7 1 :旋轉式軸桿 73 :定子 7 5 :轉子 -41 200918761 77 :軸承支撐座 7 9 :軸承 8 1 :定子鐵心 8 1 a :磁極部份 8 3 :激磁線圈 8 4 :絕緣子 8 5 :定子板 8 5 a :電路板穿透孔 8 7 :尾銷 8 9 :環狀構件 9 1 :永久磁鐵 9 3 :杯狀構件 9 3 a :壁面部份 9 3 b :底部壁面部份 9 3 c :通風孔 95 :葉片 1 7 1 :旋轉式軸桿 1 73 :定子 1 7 5 :轉子 1 7 7 :軸承支撐座 1 7 9 :軸承 1 8 5 :定子板 1 8 9 :環狀構件 193 :杯狀構件 -42 200918761 193a :壁面部份 193b :底部壁面部份 1 9 3 c :通風孔 1 9 5 :葉片 D 1 :虛擬對角線 D 2 :虛擬對角線 D 3 :虛擬對角線 D4 :虛擬對角線 F :分開平面 GP ‘·引線導引路徑 IS :內部空間 L :引線 S 1 :第一空間 S 2 :第二空間 -43-200918761 IX. [Technical Field] The present invention relates to an internal fan for cooling an electric appliance or the like. [Prior Art] Japanese Patent No. 3 904595 (Reversed axial flow fan of the patent document, The housing includes a housing frame. The housing body includes an air passage. A suction opening on one of the line directions and a discharge opening on the side. The motor supports the center portion of the frame. The first thruster that is rotated in the reverse axial fan is disposed in a first space defined between the outer casing and the suction opening. Further, the second pusher is disposed in a second space defined between the outer casing and the discharge opening. In the swirling fan in the direction in which the second thruster rotates in the opposite direction, The outer casing is formed by a casing unit that is separated by a coupling structure. The first separate housing body half portion and the first support frame half body half portion include a major portion of the first cylindrical air passage that includes the first space. The first part is obtained by dividing the motor support frame along a virtual part. The reference split plane is on the opposite side of the reverse axial flow 1) revealing that the housing body and a motor support air passage have another motor disposed in the axial direction of the air passage 'the first motor The support frame 'supports the frame by the motor that is screwed by the second motor—the propeller is in one turn. The first and second outer casing units coupled to the inverted shaft include a first portion. The first outer casing half, And extending in the radial direction of the -5-200918761 orthogonal to the axial direction of the reference dividing plane of one of the supporting frame half portions. The second separate housing unit includes a second housing body half portion and a second support frame half portion. The second housing body half portion includes a second cylindrical air passage half portion, And include a major part of the second space. The half portion of the second support frame is obtained by dividing the motor support frame into two parts along the virtual reference plane. The coupling structure is formed by an assembly portion of one of the ends of the half portion of the first cylindrical air passage, And an assembly portion formed at one of the ends of the half portion of the second cylindrical air passage to be assembled with the fitting portion. However, in the conventional reverse axial fan, When the assembled portion of the first cylindrical air passage half portion and the assembled portion of the second cylindrical air passage half portion are strongly pressed against each other, To couple the first and second separate housing units, Excessive force is applied to the assembled portions of the first and second separate outer casing units. The first and second separate housing units can thereby be broken. Furthermore, In the conventional reverse axial fan, The coupling of the first and second separate housing units is not strong enough. According to this, When an external force is applied, The first and second separate housing units tend to be separated or disconnected. For this reason, the system needs to use screws, An adhesive or the like is used to enhance coupling between the first and second separate housing units. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an inverted axial fan. In the case where the brother and the separate case of the table are called, Prevent the first and -6- 200918761 second separate housing units from being disconnected. Another object of the present invention is to provide an inverted axial fan. Wherein the first and second separate casings are prevented from being easily separated or disassembled, Even when an external force is applied. The reverse axial fan of the present invention comprises a casing, First propeller, First motor, Second propeller, And a second motor. The housing includes a housing body and a motor support frame. The housing body includes an air passage. The air passage has a suction opening on one side in the axial direction and a discharge opening on the other of the axial directions. The motor support frame is disposed in a central portion of the air passage. The first thruster is disposed in a first space defined between the motor support frame and the suction opening in the outer casing, And includes multiple blades. The first motor includes a first rotary shaft. The first thruster is fixed to the first rotary shaft. And the first motor rotates the first pusher in the first rotational direction in the first space. The second pusher is disposed in a second space defined between the motor support frame and the discharge opening in the outer casing, And includes multiple blades. The second motor includes a second rotary shaft 'the second thruster is fixed to the second rotary shaft' and the second motor is opposite to the first rotation direction in the second space Rotating the second propeller 0 in a second direction of rotation. The motor support frame includes a support frame body disposed in a central portion of the air passage. And a plurality of thin strips disposed between the frame body and the outer casing body at predetermined intervals in a circumferential direction of the rotary shafts. The thin strips connect the support frame body and the outer casing body. 200918761 The outer casing is composed of first and second separate outer casing units. The housing units are coupled via a coupling structure. The first separate housing unit includes a first housing body half portion and a first support frame half portion. The first housing body half portion includes a first flange portion having the suction opening at one end thereof, And a half of the first cylindrical air passage, One end of the half portion of the first cylindrical air passage is integrally formed with the first flange portion. And the first cylindrical air passage half portion includes a main portion of the first space therein. The half portion of the first support frame is obtained by dividing the motor support frame into two parts along a virtual reference plane. The reference split plane extends in the radial direction of the rotary shaft orthogonal to the axial direction. The second separate housing unit includes a second housing body half portion and a second support frame half portion. The second housing body half portion includes a second flange portion having the discharge opening at one end thereof, And a half of the second cylindrical air passage, An end portion of the half portion of the second cylindrical air passage is integrally formed with the second flange portion. And the second cylindrical air passage half portion includes a main portion of the second space therein. The half portion of the second support frame is obtained by dividing the motor support frame into two parts along the virtual reference plane. The coupling structure employed in the present invention is composed of the following: a fitting part, Formed at the other end of the half portion of the first cylindrical air passage; An assembled part, Formed at the other end of the half portion of the second cylindrical air passage; a plurality of meshing members, It is integrally formed with the first flange portion, And arranged at intervals in the circumferential direction; And a plurality of engaged members, It is integrally formed with the second flange portion, And in the circumferential direction -8- 200918761, the arrangement is at the intervals. The fitting portion is fitted into the assembled portion. The engagement member extends along a portion of the first cylindrical air passage half. The ta-joined member extends along a portion of the second cylindrical air passage half. The engaging members are respectively engaged with the engaged members. a plurality of first stopper portions are integrally formed with the first flange portion, And configured to adjoin the engaging members, And extending along a half of the first cylindrical air passage. a plurality of second stopper portions are integrally formed with the second flange portion, And arranging the connected members to extend and extend along the second cylindrical air passage half portion. When the plurality of engaging members are fully engaged with the engaged members, the first end portions of the first stopper portions abut against the front ends of the second stopper portions, respectively. In the present invention, the engaging member is integrally formed with the first flange portion and the engaged member is integrally formed with the second flange portion. The coupling structure is coupled to the first and The second separate housing unit. According to the present invention, the coupling of the first and second separate housing units is not limited by an assembly structure, And the assembly structure is obtained by the engagement of the first cylindrical air passage half and the second cylindrical air passage half by the engagement of the engaging members and the engaged members. The assembly part is composed. the result is, No force concentration will occur in the assembly structure of the first cylindrical air passage half portion and the second cylindrical air passage half portion. Furthermore, The first and second separate housing units will not easily break or separate the stems. Furthermore, In the present invention, The first stop portion is configured to abut the engagement members, And the second stopper portion is disposed 13 to be connected to the engaged members. in this way, When the first separate outer casing unit and the second separated outer casing unit are coupled to each other, Even if the force is concentrated and the first flange portion and the second flange portion are applied to the engaging members and the first engaging members of the engaging members are adjacent to the front end portions of the engaging members Abutting the front end of the second stopper portion adjacent to the engaged members, respectively. the result is, Even if the engaging members are strongly pressed against the engaged members, The engaged member and the engaging member can be prevented from being Or the engaging portion of the engaging member itself is broken. Preferably, When the first and second flange portions respectively have a contour shape disposed in the circumferential direction, And the outline shape includes four corners, When the first to fourth corners, Four of the engaging members and four of the first blocking members are respectively disposed near the four corners of the first flange portion, And four of the engaged members and the four second blocking members are disposed adjacent to the four corners of the second flange portion, respectively. then, In the first flange portion, Two of the engaging members are disposed in an area defined between the first corner and the second corner, Two of the first stop members are disposed in an area defined between the second corner and the third corner, Two of the engaging members are disposed in an area defined between the third corner and the fourth corner, And two of the first stop members are disposed in an area defined between the fourth corner and the first corner. Furthermore, In the second flange portion, Two of the engaged members are disposed in an area defined between the first corner and the second corner, Two of the second stop members are disposed in an area defined between the second corner and the third corner: 'two of the engaged members are disposed in the third corner and the fourth In an area defined between the corners, And two of the -10-200918761 second stop members are disposed in an area defined between the fourth corner and the first corner. With this configuration, It is easy to ensure a space for each corner of the first and second flange portions. According to this, The four meshing members, Four engaged components, Four first stop parts, And four second stopper portions may be disposed in the circumferential direction. The first and second stopper portions are specifically disposed on the outer sides of the engaging members and the engaged members. Even when excessive force is applied to the four corners of the first and second flange portions, The first and second stopper portions located outside the engaging and engaged members absorb an external force. This excessive force can be prevented from being applied to the engaging and engaged members. Preferably, The engaging members are integrally coupled to the half portion of the first cylindrical air passage. And the engaged members are integrally coupled to the second cylindrical air passage portion. With this configuration, The mechanical strength of the engaging and engaged members can be improved. Furthermore, After the engaging members have been engaged with the engaged members, The engaging and engaged members have the effect of enhancing the half portions of the first and second cylindrical air passages. The engaging members can be configured in the following manner, Engaged member, And the first and second stop members. When connecting the four corners to the first virtual diagonal of the two corners facing each other in the radial direction of the rotary shafts, And when the second virtual diagonal connecting the remaining two corners of the four corners is assumed to be in the first flange portion, Providing the engaging member and the first stopper portion corresponding to the engaging member, In order to intervene between the first or second virtual diagonal. Again, The engaging members and the first blocking members are not disposed at the four corners. The first or second virtual diagonal passes through the four corners. When connecting -11 - 200918761, the four corners are the third virtual diagonal of the two corners facing each other in the radial direction of the rotary shafts, And when the fourth virtual diagonal connecting the remaining two corners of the four corners is assumed to be in the second flange portion, Providing the engaged member and a second stop portion corresponding to the engaged member, In order to intervene in the third or fourth virtual diagonal between them. Furthermore, The engaged members and the second blocking members are not disposed at the four corners. The third or fourth virtual diagonal passes through the four corners. With this configuration, When force is applied to the four corners of the first flange portion and the four corners of the second flange portion, To couple the first and second separate housing units, The forces are applied to the engaging and engaged members and the first and second stop members in a good balance. The engaging members can thereby securely engage the engaged members and can positively assume the functions of the first and second stop portions. Various types of engaging and engaged members can be used. When the engaging members and one of the engaged members include a claw portion, for example, The engaging member and the other of the engaged members may include a hole portion that engages the claw portion. With this configuration, When the engaging member and the engaged member are engaged, At least one of the engaging member and the engaged member is curved, And once the engaging member is fully engaged with the engaged member, The claw portion and the hole portion become intermeshing. then, Forming the hole portion, In order to allow visual confirmation of the engagement of the claws that engage the portion of the hole. With this configuration, The engaging member can be easily engaged with the engaged member only by elastically inserting the claw portion into the hole portion. Furthermore, Since the hole portion is formed to allow visual confirmation of the engagement of the claw portion engaged with the hole portion, This engagement can be visually confirmed. According to this, The engagement between the engagement and the engaged member -12-200918761 can be easily confirmed. Preferably, Designing the engaging members and the shapes of the first stops, When a flange portion is formed by the half portion of the first cylindrical air passage, The outer side of the first flange portion is not protruded. Designing the shape of the engaged member and the second stop portion when the second flange is viewed from a half of the second cylindrical air passage portion, The outer side of the second flange portion is not protruded. With this configuration, Even for such engaging members, Engagement member, And the first and second stops, The increase in the outline size of the inverted axial fan can be suppressed in the present invention, For the coupling structure, an engaging member integrally formed with the first protrusion and an integrally formed member with the second flange portion are used. The coupling structure couples the first separate housing unit and the open housing unit. The coupling of the first separate outer casing unit and the second split casing unit is not limited by an assembly structure, And obtained by the engaging structure of the piece and the engaged member, The assembly is formed by the fitting portion of the half portion of the first cylindrical air passage and the engaged portion of the half portion of the cylindrical air passage. The knotless force concentrates on the assembly structure of the half of the first cylindrical air passage half of the second cylindrical air passage. Furthermore, And the second separate housing unit will not be easily disconnected or separated. In the present invention, The first stop portion is provided to adjoin the same, And the second stop member is provided adjacent to the engaged members, When the first separate outer casing unit and the second separate outer casing are single, Even if the power is concentrated and the first flange portion and the first portion are viewed, , In some cases, when the part is raised, the edge portion is entangled, and the second portion is separated from the meshing structure. The second round is And the first one, Combined components. Such a portion is coupled to the two flanges -13-200918761 portion to be applied to the engaging members and the engaged members, The front end portions of the first stopper portions adjoining the engaging members are respectively abutted to the front ends of the second stopper portions adjoining the engaged members. the result is, Even if the engaging members are strongly pressed against the engaged members, The engagement portion between the engaging member and the engaged member can be prevented from being broken. [Embodiment] Now, A specific embodiment of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 is a cross-sectional view, The half portion of the inverted axial fan in the embodiment of the present invention is shown. As shown in Figure 1, In this particular embodiment, the inverted axial fan comprises a housing 1. First motor 3, First thruster 5, The second motor 7' and the second pusher 9. The outer casing 1 includes a casing body 61' including an air passage 2; - The motor support frame 6' is disposed in a central portion of the air passage 2. Furthermore, As shown in Figures 2 to 6, The outer casing 1 is composed of a first divided outer casing unit 11 and a second divided outer casing unit 13 coupled via a coupling structure. 2 to 4 are perspective views of the outer casing 1, respectively a plan view of the outer casing 1, The left side view with the outer casing 1. Figure 5 is a partial cross-sectional view, Take the line V - V along the line in Figure 3. Figure 6 is a cross-sectional view, Take the line V I - V I along the line in Figure 4. The first divided outer casing unit 11 is made of synthetic resin or aluminum. As shown in Figure 7, The first separate housing unit 11 integrally includes a first housing body half portion 15 and a first support frame half portion 17. The first housing body half portion 15 includes a first flange portion 19, First round -14- 200918761 The half of the cylindrical air passage 2 1 Four engaging members 2 3 A to 2 3 D, And four first stopper portions 25A to 25D. The first flange portion 19 has a generally quadrangular outline. The quadrilateral has four corners. The four corners, That is, the first corner 19a, Second corner 19b, Third corner i9c, And a fourth corner 1 9d is disposed in a circumferential direction of the rotary shaft 7 i of the first motor 3 and the rotary shaft 171 of the second motor 7 The rotating shafts are arranged on the same axis A. This direction will hereinafter be referred to only as the circumferential direction. The first divided outer casing unit 11 has an intake opening i 1 a in an axial direction at one end portion of the outer casing 1, It will be described later. The first space S 1 is defined between the motor support frame 6 in the outer casing 1 and the suction opening 11a. The four corners of the first flange portion 196 are rounded. then, A penetration hole 19e is formed in each of the four corners. A clamp member for mounting the reverse axial fan to the electric appliance is inserted into the penetration hole. One end portion of the first cylindrical air passage half portion 21 is integrally formed with the first flange portion 19. The first cylindrical air passage half portion 21 contains therein the main components of the first space S1. This first cylindrical air passage half portion 2 1 extends in the axial direction of the rotary shafts 7 1 and 171 (hereinafter only referred to as the axial direction). At four positions of the peripheral portion outside the other end portion 21a of the first cylindrical air passage half portion 21, The wall portion 2 1 b protruding outward in the radial direction of the rotary shafts 71 and 171 (hereinafter only referred to as the radial direction) is formed in the circumferential direction at equidistant intervals, respectively. in. Positions at inner peripheral portions of the other end portion 21a of the first cylindrical air passage half portion 21 correspond to the wall portion 2; ! b, Linearly -15-200918761 The extended flat surface portion 2 1 c is formed separately. In this particular embodiment, The inner peripheral portion including the other end portion 21a of the flat surface portion 21c constitutes a fitting portion. As shown in Figure 3, As shown in 4 and 7, The four engaging members 23A to 23D are integrally formed with the first flange portion 19 and the first cylindrical air passage half portion 21, And arranged at intervals in the circumferential direction. The four engaging members 2 3 A to 2 3 D are respectively engaged with the four engaged members 4 1 A to 4 1 D of the second divided outer casing unit 13 . This will be described later. The four engaging members 2 3 A to 2 3 D are respectively disposed in the vicinity of the four corners 19 9 a to 19 d. It is integrally coupled to the first cylindrical air passage half portion 21. The four engaging members 2 3 A to 2 3 D extend along the first cylindrical air passage half portion 2 1 in the axial direction. So that when the flange portion is viewed by the first cylindrical air passage half portion 21, The four engaging members 23A to 23D are not protruded to the outside by the contour of the first flange portion 19. By using the engaging members 23B shown in Figs. 5 and 7 as a typical example' and by assigning reference numerals to individual parts of the engaging member 23B, The structure of an engaging member will be described. Each of the engaging members 23A to 23D includes two plate portions 23a and 23b and three connecting portions 2 3 c to 2 3 e '. The connecting portions are connected to the plate portions 23a, 23b. The plate portions 23a and 23b are opposed to each other in a direction orthogonal to the axis direction and in an upright direction in the pages of Figs. 5 and 7. The three connection portions 2 3 c to 2 3 e are disposed at predetermined intervals in the axial direction. The two connecting portions 2 3 c and 2 3 d extend completely in the upright direction between the two plate portions 23a and 23b. And the division of one boundary -16- 200918761 is determined by the space between the two plate parts 2 3 a and 2 3 b. The connecting portion 2 3 e only connects the upper edge portions of the two plate portions 2 3 a and 2 3 b. Since the two plate portions 2 3 a and 2 3 b extend slightly downward. in this way, An opening portion 23f is formed in the two plate portions 23a and 23b, The connecting portion 23e, And in the first cylindrical air passage half portion 21. A hole portion 23g facing upward is formed between the connecting portions 23d and 23e. The four first stopper portions 25A to 25D each have a shape of a substantially rectangular flat plate. And formed integrally with the first flange portion 19. The base portions of the first stop portions are integrally coupled to the first cylindrical air passage half portion 21. The four stopper portions 25A to 25D extend along the first cylindrical air passage half portion 2 1 in the axial direction. So that when the first flange portion is viewed from the first cylindrical air passage half portion 2 i, The four stopper portions 25A to 25D are not protruded to the outside by the outline of the first flange portion 19. How to set the four first stopper portions 25 A to 25 D will be described later. As shown in Figure 7, The first support frame half portion 17 includes a first support frame body half portion 27 and five first thin strip half portions 28 A through 28E. The first support frame body half portion 27 includes a slab-shaped plate portion 27b. Having an opening portion 27a in its center; And one week side wall part 27c, It extends in an axial direction from an outer peripheral portion of the circular plate portion 27b. A first metal bearing support 77 made of brass is fixedly fitted into the opening portion 27a, As shown in Figure 1. The stator plate 85 of the first motor 3 is disposed in a space. The space between -17 and 200918761 is defined by the circular plate portion 27b and the peripheral wall portion 27c. Enclosed as shown in Figure 1. In the first support frame body half portion 27, Forming four first penetration hole half portions 29A to 29D, It passes through the first support frame body half portion 27 in the axial direction of the rotary shaft 71 of the first motor 3. The four first penetration hole half portions 29A to 29D are formed at equidistant intervals in the circumferential direction. A through hole half portion 29A of the four first through hole half portions 29A to 29D communicates with an inner space of the first lead guide path half portion 31 of the first thin strip half portion 28A. It will be described later. Between the peripheral wall surface portion 27c of the first support frame body half portion 27 and the inner peripheral surface of the first housing body half portion 15 The five first thin strip half portions 28 A to 28E are disposed at predetermined intervals in the circumferential direction, Thereby, the first supporting frame body half portion 27 and the first housing body half portion 15 are coupled. The first thin strip half portions 28A of the five first thin strip half portions 28A to 28E constitute a thin strip half portion including the first lead guiding path half portion 31. This first thin strip half portion 28A will hereinafter be referred to only as the first lead guide web half portion 28A. As shown in Figures 7 and 8, The first lead guiding strip half portion 28A includes a bottom wall surface 28a and a pair of J wall portions 28b. The pair of side wall portions are respectively raised by the bottom wall surface 28a toward the second motor 7. As shown in Figure 7, The first lead guiding path half portion 3 1 is formed by an area. The area is enclosed by the bottom wall surface 28a and the pair of side wall portions 28b. As shown in Figure 8, A raised or raised portion 28d is formed on the side wall portion 28b of the pair. And the protruding direction -18-200918761 will be described later as the second lead guiding strip half portion 55A. Then, a recessed or recessed portion 28 8a recessed toward the bottom wall surface is also formed in the side wall portion 28b of the pair. In this particular embodiment, The convex portion 28 d and one of the concave portion 28e' disposed in one of the pair of side wall portions 28b are opposite to each other in the circumferential direction of the other side wall portion provided in the pair The convex portion 28d of the portion 28b and the concave portion 28e. The convex portion 28 d and the concave portion 28 8 are respectively contoured into an isosceles trapezoid having two non-parallel opposing sides of equal length. The raised portion 28 d and the recessed portion 28 8 e have two inclined surfaces, respectively. Corresponding to the trapezoidal pair of non-parallel opposing sides of equal length, And one of the two inclined surfaces 28 d 1 of the convex portion 28 d is continuous with one of the two inclined surfaces 28 e of the concave portion 28 e adjoining the convex portion 28 d. The raised portion 28d protrudes beyond the second lead guiding strip half portion 55A beyond a virtual reference separating plane F. The virtual reference separate plane F is the separate plane, A motor support frame is divided into two parts along the plane. That is, the first support frame half portion 17 and the second support frame half portion 35 which will be described later. Then 'except for the portion where the convex portion 28d and the concave portion 28 8 are formed, One end surface 28f of each of the side wall portions 28b of the pair is located in or tied to the virtual reference separation plane f. Furthermore, As shown in Figure 4, The opening portion 2 is adjacent to a position where the half of the first lead guiding strip half 8 8 A is joined! The d system is formed in the first cylindrical air passage half portion 2 1 , The opening portion opens toward the inner side of the half edge portion 2 8 A of the first lead guiding strip. The lead l is taken out through the opening portion 21d. -19- 200918761 The second separate outer casing unit 13 is also made of synthetic resin or aluminum. As shown in Figure 9, The second separate housing unit 13 includes a second housing body half portion 33 and a second support frame half portion 35. The second housing body half portion 33 includes a second flange portion 37, The second cylindrical air passage half portion 39 Four engaging members 4 1 A to 4 1 D , And four second stopper portions 43A to 43D. The second flange portion 37 has a generally quadrangular outline. The quadrilateral has four corners. The four corners, That is, the first corner 37a, Second corner 37b, Third corner 37c, And a fourth corner 37d is disposed in the circumferential direction. The second flange portion 37 has a discharge opening 13a in the axial direction at the other end portion of the outer casing 1. The second space S2 is defined between the motor support frame 6 in the outer casing 1 and the discharge opening 13a. The four corners 37a to 37d of the second flange portion 37 are formed in a circular shape. And forming a through hole 3 7e in each of the four corners, A clamping member for mounting the inverted axial fan to the electric appliance is inserted into the penetration hole. One end portion of the second cylindrical air passage half portion 39 is integrally formed with the second flange portion 37. The second cylindrical air passage half portion 39 contains therein the main components of the second space S2. Four flat surface portions 45 are formed at equal intervals in the circumferential direction on the peripheral portion (assembled portion) of the other end portion 39a of the second cylindrical air passage portion 39. When the first separate outer casing unit 1 1 and the second separate outer casing unit 3 are coupled, The four flat surface portions 45 are brought into contact with the flat surface portion 2c of the other end portion 2 1 a of the first cylindrical air passage half portion 2 1 . The positioning of the first split housing unit -20-200918761 and the second split housing unit 13 in the circumferential direction is determined by aligning the flat surface portions 21c and the flat surface portions 45. The four engaged members 41A to 41D are integrally formed with the second flange portion 37. And arranged at intervals in the circumferential direction. The four engaging members 4 1 A to 4 1 D are respectively disposed adjacent to the four corners 37a to 37d of the second flange portion 37. The four engaged members 41A to 41D are integrally coupled to the second cylindrical air passage half portion 39. The four engaged members 4 1 A to 4 1 D extend in the axial direction along the second cylindrical air passage half portion 39. Thus, when the second flange portion is viewed by the second cylindrical air passage half portion 39, The four engaged members 41A to 41D are not protruded outside by the outline of the second flange portion 37. By using the engaged member 4 1 B shown in Figs. 5 and 9 as a typical example, And by assigning reference numerals to individual parts of the engaging member 4 1 B, The structure of an engaged member 4 1 B will be described. Each of the engaged members 41A to 41D includes a support portion 47 integrally provided at the second flange portion 27, a rib 49 coupled to the support portion 47 and the second cylindrical air passage half portion 39 And a claw forming member 51 having one end portion supported by the supporting portion 47. The claw forming member 51 includes a plate member portion 51a, a claw portion 5 1 b which is formed integrally with the image plate portion 5 1 a, And the protruding part 5 1 c. The image board portion 51a is connected to the support portion 47, It is separated by the ribs 49. The image plate portion 51a is extended by the support portion 47 toward the first divided outer casing unit 1 1 . The claw portion 5 1 b is formed by a front end of the image plate member portion 51 1 a in a direction orthogonal to the surface of the -21 - 200918761 image plate portion 51a. Or protrude in the upward direction in the page of Figure 5. The upper surface of the claw portion 51b has an inclined surface 5id. The thickness of the claw portion 5 1 b is increased more toward the support portion 47. In particular, The individual claw portions 5 1 b of the engaged members 4 1 A and 4 1 B protrude in the upward direction in the page of FIG. 9 . The individual claw portions 51b of the engaged members 41C and 41D protrude in the downward direction in the page of Fig. 9. The protruding portion 5 1 c is separated from the claw portion 5 1 b in the axial direction. The protruding portion 5 1 c protrudes from the image plate member portion 51 a in the same direction as the claw portion 5 1 b protrudes. The shape of the cross-sectional surface of the protruding portion 51c is substantially a rectangle. How the four engaged members 4 1 A to 4 1 D are respectively engaged with the four engaging members 2 3 A to 2 3 D of the first divided outer casing unit 1 1 will be described later in detail. The four second stopper portions 43A to 43D have a shape of a rectangular plate formed integrally with the second flange portion 317. And the B is connected to the four engaged members 41A to 41D, respectively. The four second stop members 43A to 43D are integrally coupled to the second cylindrical air passage half portion 39. The four second stopper portions 43a to 43D extend in the axial direction along the first cylindrical air passage half portion 39. Therefore, when the second flange portion is viewed by the second cylindrical air passage half portion 39, the four second stopper portions 43A to 43D are not caused by the second flange portion 37. The outline protrudes to the outside. The first corners 37a and the second corners 37c are oriented in the radial direction with respect to the axis a. The engaged members 4 1 A and 4 1 C also face each other in the radial direction. The second stopper portions 4 3 A and 4 3 C are provided for the engaged members 4 j a -22- 200918761 and 4 1 C, respectively. Specifically, when a virtual diagonal D3 connecting the first corner 37a and the third corner 37c of the second flange portion 37 is assumed, As shown in Figures 6 and 9, Disposing the engaged member 4 1 A and the second stopper portion 4 3 A, In order to intervene the virtual diagonal D 3 therebetween, And the engaged member 4 1 C and the second stopper portion 43 C are disposed, In order to intervene the virtual diagonal D3 therebetween. Similarly, The second corner 37b and the fourth corner 37d are oriented in the radial direction with respect to the axis A. The engaged members 4 1 B and 4 1 D also face each other in the radial direction. The second stopper portions 43B and 43D are provided for the engaged members 41B and 4 1 D, respectively. When a virtual diagonal D4 connecting the second corner 37b and the fourth corner 37d of the remaining two corners of the second flange portion 37 is assumed, Disposing the engaged member 4 1 B and the second stopper portion 4 3 B, In order to intervene the virtual diagonal D4 in between, And the engaged member 4 1 D and the second stopper portion 43D are disposed, In order to intervene the virtual diagonal D4 therebetween. then, Where the virtual diagonals D3 and D4 (the third and the fourth virtual diagonal) pass through the four corners 37a to 37d, None of the engaged members 4 1 A to 4 1 D and the second stopper portions 4 3 A to 43D are disposed. in other words, In an area defined between the first corner 3 7 a and the second corner 3 7 b of the second flange portion 37, The engaged members 41A and 41B are disposed, And in the region defined between the second corner 37b and the third corner 3 7 c, The second stopper portions 4 3 b and 4 3 C are disposed. Then, the engaged members 4 1 C and 4 1 D are disposed in a region defined between the third corner 37c and the fourth corner 37d. And in an area defined between the fourth corner 3 7d and the first corner 37a, Configure the second block -23- 200918761 stop parts 43D and 43A. The four first stopper portions 25A to 25D shown in Figs. 4 and 7 are also respectively arranged with yang: The four engaging members 23A to 23D are connected. One of the four first stoppers 25A to 25D and the four engagement members 23A to 23D is the same as the four second stopper portions 43A to 43D and the four shown in FIG. The positional relationship among the engaged members 41A to 41D is the same. As shown in Fig. 7, the first corner 19a and the third corner i9c are opposed to each other with respect to the axis A in the radial direction. The engaging members 23a and 2 3 C are opposed to each other in the radial direction. The first stopper portions 2 5 a and 2 5 C are provided for the engaging members 2 3 A and 2 3 C, respectively. In particular, When a virtual diagonal D1 connecting the first corner 19a and the third corner 19c of the first flange portion 19 is assumed as shown in FIG. Disposing the engaging member 2 3 A and the first stopper portion 2 5 A, So that the virtual diagonal D 1 is interposed therebetween and the engaging member 23 C and the first stopper portion 2 5 C are disposed, So that the virtual diagonal D 1 can be interposed therebetween. The second corner 19b and the fourth corner 19d are opposed to each other with respect to the axis A in the radial direction. The engaging members 2 3 B and 2 3 D are opposed to each other in the radial direction. The first stop members 25 B and 25D are provided for the engaging members 2 3 B and 2 3 D, respectively. When a virtual diagonal D2 connecting the second corner 19b and the fourth corner 19d of the remaining two corners 19 of the first flange portion 19 is assumed, Disposing the engaging member 23B and the first stopper portion 25B, So that the virtual diagonal D2 is interposed between them, And the engaging member 23D and the first stopper portion 25D are disposed, In order to intervene the virtual diagonal D2 therebetween. Then, the engaging members 23A to 23D and the first stop 25D are disposed at the four corners 19a through which the virtual diagonals and D2 (the first -24-200918761 and the second virtual diagonal) pass. in other words, In one of the first flange sounds defined: In the area between the fall 19a and the second corner 19b, Configuration and 23B, And in an area defined between the second corner 19b and Configuring the first stop portion 25B to be defined in the third corner 19c and the fourth corner, Disposing the engaging members 23C and 23D, And in the area between the first 19d and the first corner 19a, Configuration parts 25D and 25A. The four first stop members and the four second stop portions 43A to 43D are designed such that the claw portions 5 1 b are completely engaged with the engaging member hole portions 2 3 g, respectively. Time, The four first to 25D front ends are respectively abutted to the four second; To the front of 4 3 D. As shown in Figure 9, The second support frame half portion second supports the frame body half portion 53 and the five first portions 55A to 55E. The second support frame body has a half circular plate portion 5 3 b, There is a peripheral wall portion 53c in the center thereof, It extends in an outer peripheral portion of the portion 5 3 b of the axial direction. A support base 1 77 made of brass is fixedly fitted into the opening 1 as shown. The stator plate i 8 5 of the second motor 7 is such that the space is not covered by the circular plate portion 5 3 b and the peripheral wall 1 9 d The first corner of the piece 2 5 A to the minute 19 is the third corner 19c and 25C of the engaging member 2 3 A. then, In the area between the 19d, the fourth stop is divided into 25A to 25D shapes and sizes. The stopper portion 25 of the 23Α to 23D, the concealed portion 43, the portion 3 5 includes a second thin strip half portion 5 3 including a portion 5 3 a ; And a second metal shaft portion 5 3 a formed by the circular plate member, As shown in a space, The surface part 5 3 c is surrounded by -25- 200918761 live as shown in Figure 1. Forming four second penetration hole half portions 57A to 57D in the second support frame body half portion 5 3 ', Passing through the second support frame body half portion 53 in the axial direction of the rotary shaft 丨7丨 of the second motor 7, It will be described later. The four second penetration hole half portions 57A to 57D are formed at equidistant intervals in the circumferential direction of the rotary shaft 171 (shown in Fig. 1). A through hole half portion 57A of the four second through hole half portions 57A to 57D communicates with an inner space of the second lead guide path half portion 59 of the second thin strip half portion 55A. It will be described later. The four second penetration hole half portions 57A to 57D are formed to have the same shape as the four first penetration hole half portions 29A to 29D of the first support frame body half portion 27, respectively. Between the peripheral wall surface portion 53c of the second supporting frame body half portion 53 and an inner peripheral surface of the second housing body half portion 33, The five second thin strip half portions 55 A to 55E are disposed at predetermined intervals in the circumferential direction, Thereby, the second support frame body half portion 53 and the second outer casing body half portion 33 are connected. The second thin strip half portion 55A of the five second thin strip half portions 55A to 55E constitutes a half of the thin strip. And including a second lead guiding path half portion 5 9 therein. in this way, The second thin strip half portion 5 5 A will hereinafter be referred to only as the second lead guiding thin strip half portion 55A. The second lead guiding strip half portion 55A includes a bottom wall surface 55a and a pair of side wall portions 55b. The pair of side wall portions are respectively raised by the bottom wall surface 55a. The second lead guiding path half portion 59 is formed by an area. This area is surrounded by the bottom wall surface 55a and the pair of side wall portions 55b. A protruding or protruding portion 5 5 d of the first lead guiding strip half portion 28 8 is formed on the side wall portion 5 5 b of the pair. then, A recessed or recessed portion 5 5 e recessed toward the bottom wall surface 5 5 a is also formed in the side wall portion 5 5 b of the pair. In this particular embodiment, a convex portion 55d and a concave portion 55e provided in one of the side wall portions 55b of the pair, In the circumferential direction, the convex portion 55d and the concave portion 55e which are disposed on the other wall portion 5 5 b of the pair are respectively opposed. As shown in Figure 8, The raised portion 55d protrudes toward the first lead guiding strip half portion 2 8 A beyond the virtual reference separating plane F, The split plane is a separate plane along which the motor support frame is divided into a first support frame half portion 17 and a second support frame half portion 35. As shown in Figures 4 and 9, Near a position where the half of the second lead guiding strip 5 5 A is joined, An opening portion 3 9 d ' opening toward the inner side of the second lead guiding strip half portion 5 5 A is formed in the second cylindrical air passage half portion 39. It will be described in detail how the first lead guiding strip half portion 28A and the second lead guiding half portion 5 5 A are coupled. In the reverse axial fan of this embodiment, The first separate outer casing unit 1 1 and the second separate outer casing unit 13 are affixed in the following manner. Actually, The first motor 3 (shown in FIG. 1) and the first thruster 5 are disposed in the first separate outer casing unit 11, And the lead wire is disposed in the half portion 2 8 A of the first lead guiding thin strip. The first axial fan unit is assembled as such. then, The second motor 7 (shown in FIG. 1) and the second pusher 9 are disposed in the second separate outer casing unit 13, And the leads are disposed in the half portion 5 5 A of the second lead guiding strip. So -27- 200918761 assemble the second axial fan unit. then, By coupling the first axial fan unit and the second axial fan unit, The first separate outer casing unit 11 and the second separate outer casing unit 13 are coupled. First of all, The first separate outer casing unit 1 1 and the second separate outer casing unit 13 are brought close to each other, And then the front ends of the claws 5 1 b of the four engaged members 4 1 A to 4 1 D of the second divided outer casing unit 13 are respectively inserted into the four engaging members of the first divided outer casing unit 11 23 A to 23D opening portion 23 f . Referring to Figure 5, When the engaged member 41B and the engaging member 23B are brought close to each other after the insertion, The inclined surface 5 1 d of the claw portion 5 1 b comes into contact with the lower edge of the connecting portion 23e. By the contact between the inclined surface 5 1 d and the connecting portion 2 3 e, The image plate portion 5 1 a is bent, So as to be closer to the rib 49. When the engaged member 4A and the engaging member 2 3B are further brought closer to each other, And then releasing the contact between the inclined surface 5 1 d and the connecting portion 2 3 e, The connecting portion 2 3 e is fitted into a recessed or recessed portion defined between the claw portion 51b of the engaged member 41B and the convex portion 5 1 c. The claw portion 5 1 b is thereby engaged with the hole portion 23g. This completes the engagement between the engaging member 23B and the engaged member 4 1 B. In this structure, The rib 49 is used as a stopper. It prevents the pawl forming member 51 from bending more than desired. The protruding portion 51c has a function as a stopper. It prevents the claw portion 51b from moving toward the first cylindrical air passage half portion 2 1 . In this particular embodiment, The claw portion 51b and the hole portion 23g are formed, This allows visual confirmation of the engagement when the claw portion 5 lb is engaged with the hole portion 2 3 g. In order to obtain the meshing as described above, The assembly portion formed by the inner peripheral surface portion of the other end portion 2 1 a of the first cylindrical portion of the passage portion 2 1 of the first cylindrical air -28-200918761, Mounting the assembly portion formed by the peripheral surface portion of the other end portion 39a of the second cylindrical air passage half portion 39, Thereby an assembly structure is formed. The first separate outer casing unit 11 is coupled to the second separate outer casing unit 13 3 ' not only by the assembly structure discussed above, At the same time, the engagement of the claw portion 5 1 b and the hole portion 2 3 g of the engaging members 2 3 A to 2 3 D as discussed above. then, Coupling the first separate outer casing unit 11 to the second separate outer casing unit 13 as described above, The front ends of the first stopper portions 25A to 25D abut against the front ends of the four second stopper portions 43 A to 43D, respectively. A housing body 61 is a first housing body half portion 15 included in the first separate housing unit 11 And the second housing body half portion 3 3 included in the second separate housing unit 13 is constructed as described above and coupled as shown in FIG. Furthermore, A motor support frame 63 is comprised of a first support frame half portion 17 included in the first separate housing unit 11 And a second supporting frame half portion 35 included in the second divided outer casing unit 13. in other words, As shown in Figure 8, The motor support frame 63 is divided into two parts by separating the plane F along a virtual reference extending in the radial direction. The first support frame half portion 17 and the second support frame half portion 35 are obtained. Furthermore, A support frame body 65 is comprised of a first support frame body half portion 27 included in the first support frame half portion 17 And comprising a second support frame body half portion 53 of the second support frame half portion 35. With this configuration, The first through hole half portion -29-200918761 29 A to 29D of the first divided outer casing unit 1 is respectively the second through hole half portion 5 7 A of the second divided outer casing unit 13 Up to 5 7 D combines 'by forming four through holes 6 7 A to 67D. The four through holes 6 7A to 67D partially define an internal space IS of the support frame body 65. Furthermore, The five first thin strip half portions 28 A to 28E' included in the first support frame half portion 17 are respectively respectively included with the fifth and second half portions 5 5 of the second support frame The thin strip half portions 55A to 55E are combined, Thereby, five thin strips 69A to 69E are formed. The five thin strips 69A to 69E constitute fixed leaves. then, The thin strips 69A of the five thin strips 69A to 69E constitute the lead guiding thin strips 69A. The lead guiding strip 69A is formed by combining the first lead guiding strip half portion 28A and the second lead guiding strip half portion 55A. In the lead guiding strip 69A, As shown in Figure 8, The convex portion 28d of the first lead guiding strip half portion 2 8 A is fitted into the concave portion 5 5 e of the half portion 5 5 A of the second lead guiding thin strip. And the concave or concave portion of the first lead guiding strip half portion 28A and the convex or convex portion 5 of the second lead guiding thin strip half portion 5 5 A 5 d assembly. then, A lead guiding path GP (shown in Fig. 2) is formed in the lead guiding strip 69A. The lead guiding path GP guides a plurality of leads and a plurality of signal lines for supplying electric power to the first motor 3 and the first motor 7. then, As shown in Figure 4, The plurality of leads L shown by the broken lines are led out by the lead guiding paths of the lead guiding strips 69A through the opening portions 2ld and 39d. The remaining four thin strips 69]8 to 69E of the five thin strips 69A to 69E are respectively divided along the virtual reference separating plane F into the first thin strip half 30-200918761 side portion 2 8 B and the first Half of the thin strip half 5 5 B, The first thin strip half portion 28C and the second thin strip half portion 55C, The first thin strip half portion 28D and the second thin strip half portion 55D, And the first thin strip half portion 28E and the second thin strip half portion 55E. Referring again to FIG. 1', the first motor 3 includes the rotary shaft 71, Stator 73, And the rotor 75. The rotary shaft 71 is rotatably supported on the first bearing support 7 by two bearings 79 fitted into the first bearing support 77. The stator 73 includes a stator core 8 1 , Excitation line 圏 8 3, And the circuit board 8 5 ° the stator core 8 1 is formed by laminating a plurality of steel plates, And is fixed to the first bearing support base 77. The stator core 81 includes a plurality of protruding magnetic pole portions 81 1 a disposed in the circumferential direction of the rotary shaft 7 1 . The excitation coils 8 3 are attached to the protruding magnetic pole portions 8 1 a via insulators 84, respectively. The circuit board 85 is disposed along the first support frame body half portion 27 and is disposed to be spaced apart by the first support frame body half portion 27 by a predetermined spacing. An excitation current supply circuit for causing an exciting current to flow to the exciting coil 83 is mounted on the circuit board 85. In this embodiment, the excitation current supply circuit on the circuit board 85 and the excitation coils 83 are electrically connected by a coiled lead of the excitation coil 83 surrounding a tail pin 87. A through hole of the circuit board 85 is soldered to the electrode on the circuit board 85. In the circuit board 85, A plurality of circuit board penetration holes 8 5 a are formed. The board penetration holes 85a are formed in the circumferential direction of the rotary shaft 71 at equidistant intervals. The air passing through the four first through-31 - 200918761 hole half portions 29 A to 29D flowing around the stator 73 toward the first support frame body half portion 27 passes through the circuit board penetration holes 85a. The rotor 75 includes an annular member 89 and a plurality of permanent magnets 91 fixed to the inner peripheral surface of the annular member 89. The annular member 89 is fixed inside the peripheral wall portion 93a of the cup member 93 of the first pusher 5, It will be described later. The first pusher 5 includes the cup member 93 and nine blades 95 as shown in FIG. The cup member 93 includes the peripheral wall portion 93a. The nine blades 95 are fixed to the peripheral wall portion; And a bottom wall portion 93b, It is integrally formed with one end portion of the peripheral wall portion 93a. One end portion of the rotary shaft 71 of the first motor 3 is connected to the bottom wall portion 9 3 b. A plurality of vent holes 9 3 c are formed in the bottom wall portion 93 b ' and are disposed at equidistant intervals in the circumferential direction of the rotary shaft 7 1 . Each vent hole 93c has a slender shape, It extends in the radial direction of the rotary shaft 71 of the first motor 3. The vent holes 9 3 c have a function of introducing air taken in through the suction opening 1 1 a into the internal space of the first motor 3. As mentioned above, The annular member 89 of the rotor 75 is fixed to the inner side of the peripheral wall portion 93a of the cup member 93 of the first pusher 5. in this way, The first propeller 5 is rotated by the first motor 3 in the first space S1 in the first rotational direction R1. The first-rotation direction is counterclockwise in the page of the image i 〇 . As shown in Figure 1, The second motor includes the rotary shaft 171, Zizi 173, And the rotor 175. The rotary shaft 171 is rotatably supported on the second bearing support 177 by a second bearing 179 of the second bearing support 177 assembled into -32-200918761. The rotary shaft ι 71 rotates in a direction opposite to the direction of rotation of the rotary shaft 7 1 of the first motor 3. The rotary shaft 1 7 1 Stator 1 7 3, And the structure of the rotor 175 is respectively connected to the rotating shaft 71 of the first motor 3, Stator 73, Same as rotor 75. Thus, '100 is added to the rotary shaft assigned to the first motor 3, stator, And the reference number of the rotor 'and the rotary shaft of the second motor 7 'the stator, The description of the rotor and the rotor will be omitted. As shown in Figure 1, The second pusher 9 includes a cup member 193 and seven blades 195. The cup member 193 includes a peripheral wall portion 193a' to which the seven blades 195 are fixed; And - the bottom wall portion is 1 9 3 b, It is integrally formed with one end portion of the peripheral wall portion 193a. One end portion of the rotary shaft 17 1 of the second motor 7 is fixed to the bottom wall portion 193b. A plurality of vent holes 193c are formed in the bottom wall portion 193b. And disposed at equidistant intervals in the circumferential direction of the rotary shaft 171, And arranged to be separated by the rotary shaft 1 7 1 . Each of the ventilation holes 193c has a slender curved shape. And extending in the circumferential direction of the rotary shaft 171 of the second motor 7. The vent holes 193c have a function of discharging the air introduced into the internal space of the second motor 7 to the outside. As shown in Figure 1, The ring-shaped member 189 of the rotor 17 5 of the second motor 7 is discharged to the peripheral wall portion of the cup member 193 of the second pusher 9 to be discharged by 1 193 a. As mentioned above, The rotary shaft 171 of the second motor 7 rotates in a direction opposite to the direction of rotation of the rotary shaft 71 of the first motor 3. Thus, the second propeller 9 is rotated by the second motor 7 in the second rotational direction R2 in the second space S2 by the -33 - 200918761 'the first rotational direction is opposite to the first rotational direction R1, And in the clockwise direction in the page of Figure 11. In the reverse axial fan in this embodiment, When the first pusher 5 rotates in the first rotational direction, And when the second propeller rotation 9 rotates in a second rotation direction opposite to the first rotation direction, The air sucked through the suction opening 1 1 a is discharged from the discharge opening 丨3 & discharge, As shown in Figure 1, Thereby cooling the inside of the appliance. In the reverse axial fan in this embodiment, At least one raised portion 28 is disposed on a side wall portion 2 8 b ' of the pair of first thin strip half portions 2 8 A to 2 8 E and at least one raised or raised portion 5 5 d The side wall portion 5 5 b of the pair of second thin strip half portions 5 5 A to 5 5 E is disposed. Then, the convex portions 28d and 55d extend beyond the virtual reference separation plane f. The height of the side wall portions 28b and 55b can be increased by this. As a result, the 'lead' may be less likely to protrude or be drawn between the side wall portions 28b and between the side wall portions 55b. Furthermore, When the first and second separate housing units are coupled, The plurality of leads may be less likely to be sandwiched between the side portions of the first thin strip half portions 28A to 28E and the second thin strip half portions 55A to 5 5E. In the reverse axial fan of the present invention, The engaging members 23A to 23D integrally formed with the first flange portion 19 and the engaged members 4 1 A to 4 1 D integrally formed with the second flange portion 317 are employed in the coupling structure , It is coupled to the first separate outer casing unit i i and the second separate outer casing unit 13 . therefore, Not only by the engagement of the engaging members 23A to 23D and the engaged members 41A to 41D, And borrowing from -34- 200918761 by the other end portion 21a of the first cylindrical air passage half portion 21 and the other end portion 39a of the second cylindrical air passage portion 39, The coupling of the first separate outer casing unit U and the second separate outer casing unit I3 is obtained. As a result, 'no force concentration will occur in the assembled structure of the first cylindrical air passage half portion and the second cylindrical air passage portion. Furthermore, The first and second separate housing units will not be easily broken or separated. In addition, The first stop members 2 5 A to 2 5 D are respectively provided adjacent to the engaging members 2 3 A to 2 3 D, And the second stopper portions 4 3 A to 4 3 D are respectively provided adjacent to the engaged members 4 1 A to 4 1 D. Thus when the first separate outer casing unit 11 and the second separate outer casing unit 13 are coupled, Even though the force is concentrated and applied by the first flange portion 19 and the second flange portion 3 7 to the engaging members 2 3 A to 2 3 D and the engaged members 4 1 A to 4 1 D, The first stopper portions 2 5 A to 2 5 D adjoining the engaging members 23 A to 2 3 D are respectively abutted against the second stoppers adjacent to the engaged members 4 1 A to 4 1 D Part 4 3 A to 43D front end. the result is, Even if the engaging members 23 A to 23D are strongly pressed against the engaged members 4 1 A to 4 1 D, It may be a breakage of the engaging portion which may prevent the engaging members 23A to 23D and the engaged members 41A to 41D from meshing with each other. Although the preferred embodiment of the invention has been described with a certain degree of specificity with reference to the drawings, From the point of view of the above teachings, Obvious modifications and changes are possible. Therefore, it should be understood that within the scope of the attached patent application, The invention can be practiced otherwise than as specifically described. -35- 200918761 [Simple description of the drawings] When considering the drawings, These and other objects of the present invention, as well as many of the attendant advantages, will be readily appreciated. It is better understood by reference to the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing the half of an inverted axial fan in an embodiment of the present invention. Figure 2 is a perspective view of the outer casing of the inverted axial fan shown in Figure 1. Figure 3 is a plan view of one of the inverted axial fans shown in Figure 1. Figure 4 is a left side view of the inverted axial fan shown in Figure 1. Figure 5 is a partial cross-sectional view, Take the line V-V along the line in Figure 3. Figure 6 is a cross-sectional view, Take the line VI-VI along the line in Figure 4. ® 7 is a perspective view of the first separate housing unit of the inverted axial fan shown in Figure 1. The ® 8 Series Diagram is used to illustrate how to configure the reversed axial flow ® I ® lead guide strip as shown in Figure 1. ΙΒϊ 131 9 is a perspective view of the second separate housing unit of the inverted axial fan shown in FIG. 1 is a perspective view of the first thruster of the inverted axial fan shown in FIG. Figure 11 is a perspective view of the second pusher of the inverted axial fan shown in Figure 1. -36- 200918761 [Explanation of main component symbols] 1 : Shell 2 : Air passage 3 : First motor 5 : First thruster 6 : Motor support frame 7 : Second motor 9 : Second thruster 1 1 : Shell unit 1 1 a : Suction opening 1 3 : Shell unit 1 3 a : Discharge opening 1 5 : Half of the body of the housing 1 7 : Half of the body of the housing 1 9 : Flange part 1 9 a : Corner 19b: Corner 1 9 c : Corner 1 9d : Corner 2 1 : Half of the air passage 2 1 a : The other end 2 1 b : Wall part 2 1 c : Flat surface part 2 1 d : Opening part -37- 200918761 2 3 A : Engagement member 2 3 a : Plate part 2 3 B : Engagement member 2 3 b : Plate part 2 3 C : Engagement member 23c: Connection part 2 3 D : Engagement member 2 3 d : Connection part 23e: Connection part 2 3 f : Opening part 2 3 g : Hole part 2 5 A : Stopper part 25B: Stopper part 25C : Stopper part 25D: Stopper part 2 7 : Support the half of the frame body 2 7 a : Opening portion 27b: Plate part 27c : Wall part 2 8 A : Half of the thin strip 2 8 a : Bottom wall 2 8 B : Half of the thin strip 2 8 b : Side wall part 2 8 C : Half of the thin strip -38 200918761 2 8 D : Half of the strip half 28d : Protruding part 2 8 d 1 : Inclined surface 28E : Half of the thin strip 2 8 e : Recessed part 2 8 e 1 : Inclined surface 2 8 f : End surface 29A: Through hole half part 29B : Half of the penetrating hole 29C : Half of the penetrating hole 29D : Half of the penetrating hole 31 = half of the lead guiding path 3 3 : Half of the body of the housing 3 5 : Support the half of the frame 3 7 : Flange portion 37a: Corner 37b : Corner 37c: Corner 37d : Corner 3 7e : Through hole 3 9 : Half of the air passage 3 9a : The other end is 3 9 d : Opening part 4 1 A : Engaged member -39 200918761 4 1 B : Engaged member 4 1 C : Engaged member 4 1 D : Engaged member 43A: Stopper part 43B: Stopper part 43C : Stopper part 43D: Stopper part 4 5 : Flat surface part 47 : Support part 4 9 : Ribs 5 1 : Jaw forming member 5 1 a : Like the board part 5 1 b : Claw 5 1 c : Protruding part 5 1 d : Inclined surface 5 3 : Support the half of the frame body 5 3 a : Opening part 5 3 b : Plate part 5 3 c : Wall part 5 5 A : Lead guide strip half half 5 5 a : Bottom wall 5 5 B : Half of the strip 5 5 b : Side wall part 5 5 C : Half of the thin strip -40 200918761 5 5 D : Half of the strip 5 5 d : Protruding part 5 5 E : Half of the strip 5 5 e : Recessed part 5 7A : Half of the penetrating hole 5 7B : Half of the penetrating hole 5 7 C : Half of the penetrating hole 5 7D : Half of the penetrating hole 59 : Half of the lead guide path 6 1 : Shell body 63 : Motor support frame 6 5 : Support frame body 67A : Through hole 67B : Through hole 6 7 C : Through hole 67D : Through hole 6 9 A : Thin strips 6 9 B : Thin strip 6 9 C : Thin strip 6 9 D : Thin strip 69E : Thin strip 7 1 : Rotary shaft 73 : Stator 7 5 : Rotor -41 200918761 77 : Bearing support 7 9 : Bearing 8 1 : Stator core 8 1 a : Magnetic pole part 8 3 : Excitation coil 8 4 : Insulator 8 5 : Stator plate 8 5 a : Board penetration hole 8 7 : End pin 8 9 : Ring member 9 1 : Permanent magnet 9 3 : Cup member 9 3 a : Wall part 9 3 b : Bottom wall section 9 3 c : Vents 95 : Blade 1 7 1 : Rotary shaft 1 73 : Stator 1 7 5 : Rotor 1 7 7 : Bearing support 1 7 9 : Bearing 1 8 5 : Stator plate 1 8 9 : Ring member 193 : Cup member -42 200918761 193a : Wall part 193b : Bottom wall section 1 9 3 c : Ventilation holes 1 9 5 : Blade D 1 : Virtual diagonal D 2 : Virtual diagonal D 3 : Virtual diagonal D4: Virtual diagonal F : Separate plane GP ‘·Lead guide path IS : Internal space L : Lead S 1 : First space S 2 : Second space -43-