1269843 九、發明說明： 【發明所屬之技術領域】 心本發明涉及-種馬達裝置’特別指—種具有流體動壓軸承之馬達 及採用該馬達之風扇。 【先前技術】 、現階段，爲減小馬達轉動件之磨損及降低。喿音，延長使用壽命， 流體動壓軸承已被越來越多地應用於馬達中。 如第六圖所示，馬達包括-軸承81及一穿設於幸由承81内並與轴 承81間存在-定間隙之轉軸80，轴承81 _面設有溝槽犯，其中該 間隙内存儲有>閏滑流體。靜止時軸承81與轉車由8〇之間直接接觸從而 支撐徑向之載荷，在軸承81與轉軸8Q相對旋轉時，軸承81與轉軸8〇 之間之潤滑流體由於溝槽82之作用，潤滑流體層對轉軸8〇産生一定 壓力，從而支撐轉軸80旋轉，使轉軸80在旋轉過程中和軸承81不直 接接觸。 第七®所示爲軸承内表面流道結構之圓周展開放大圖，溝槽82 呈V形，包括相交于交叉區88之第一流道87a及第二流道87b，由 於溝槽82頂端内之潤滑流體與空氣相接觸，故需要對潤滑流體進行密 封。在靜止狀悲時，由於潤滑流體與空氣接觸面之表面張力作用而達 到岔封之效果，相關技術請參考美國專利第5,丨12,142號。在轉軸8〇 相對軸承81旋轉時，潤滑流體之壓力升高，同時由於第一流道87a及 第一//,1•道87b兩之潤滑流體向交叉區88流動，從而存留於第一流道 87a及第二流道87b兩端内之潤滑流體之壓力降低，只有在第一流道 87a及第二流道87b兩端内潤滑流體壓力在上述兩者作用下降低到小於 外界大/£力之狀恕，才能防止潤滑流體〉、世漏，但是在旋轉過程中由於 震動等情況即使潤滑流體的壓力稍低於外界大氣壓力，仍有可能泄 漏，因此要求潤滑流體降低到更低之壓力狀態才能保證潤滑流體^會 泄漏。 上述軸承81置於一支樓件83内，該軸承81外表面與該支撐件⑽ 内表面之間形成一透氣通道85，該透氣通道85包括一水平段及一垂直 段，在將轉軸80安裝於軸承81内時，可讓氣體方便從此透氣通道奶 1269843 逃出。但，該透氣通道85係通過軸承81與支撐件83合圍形成之，在 加工上述軸承81及支撐件83以及在安裝時需要格外精確，成本較高。 【發明内容】 本發明要解決之技術問題係提供一種具有改進防漏效果之流體動 壓軸承馬達。 本發明要解決之另一技術問題係提供一種採用上述流體動壓軸承 馬達之風扇。 爲解決本發明技術問題，本發明流體動壓軸承馬達包括一支撐 件、一套設於該支撐件外之定子及一被該支撐件支撐之轉子，該轉子 包括一轉軸及與該定子相對之磁鐵，該支撐件包括一軸承，該軸承包 括一供轉軸穿設之軸孔，該軸承内壁或該轉軸外壁設有流道結構，該 流道結構内填充有在轉軸旋轉時産生壓力從而支撐該轉軸旋轉之潤滑 流體，該流道結構包括複數間隔排列之第一及第二動壓槽，每一第一 動壓槽與相鄰一第二動壓槽相交於該流道結構的邊緣。 爲解決本發明另一技術問題，本發明風扇包括一扇框、一支撐件、 一套設於該支撐件外之定子及一被該支撐件支撐之轉子，該扇框包括 一連接該支樓件之底板’該支撐件包括一軸承，該軸承包括一供轉軸 穿設之軸孔，該轉子包括一輪轂、複數環設於輪轂外緣之扇葉及設於 遠輪較内之磁鐵以及一自該輪較向外延伸進上述轴孔之轉軸，該轴承 内壁或該轉軸外壁設有流道結構，該流道結構内填充有在轉軸旋轉時 産生壓力從而支撐該轉軸使轉軸與軸承在徑向上相分離之潤滑流體， 該流道結構包括兩組分別位於其上半部及下半部之連續“Z”形流 道，該兩組“Z”形流道分別在該流道結構之上、下緣形成外交叉區， 該兩組“Z”形流道相交於流道結構中部並在該流道結構中部形成内 交叉區。 本發明流體動壓轴承馬達工作時，位於各流道内之潤滑流體可經 過各流道分流，形成較現有技術更低之低壓區，因此防漏效果更理想。 採用上述馬達之風扇工作更可靠。 【實施方式】 下面參照附圖結合實施例對本發明作進一步說明。 1269843 清參閱第一圖，風扇200包括一設有内部空間2的扇框i、一設於 扇框1之内部空間2中部之支撐件4〇、一套設於支撐件4 ^ 50及一可被該支撐件4〇支撐之轉子6〇。 扇框1由塑膠材料製成，包括一底板10。 定子50包括上、下兩絕緣架52及固定於所述兩絕緣架义之門之1269843 IX. Description of the Invention: [Technical Field] The present invention relates to a motor device, and particularly to a motor having a fluid dynamic pressure bearing and a fan using the same. [Prior Art] At this stage, in order to reduce the wear and tear of the motor rotating parts. Arpeggios, extending the service life, fluid dynamic pressure bearings have been increasingly used in motors. As shown in the sixth figure, the motor includes a bearing 81 and a rotating shaft 80 which is disposed in the bearing 81 and has a fixed gap with the bearing 81. The bearing 81 _ surface is provided with a groove, wherein the gap is stored therein. There is &#; slippery fluid. At rest, the bearing 81 and the transfer car are in direct contact with each other to support the radial load. When the bearing 81 rotates relative to the rotating shaft 8Q, the lubricating fluid between the bearing 81 and the rotating shaft 8〇 acts as a groove 82, and the lubricating fluid The layer exerts a certain pressure on the rotating shaft 8〇 to support the rotation of the rotating shaft 80 so that the rotating shaft 80 does not directly contact the bearing 81 during the rotation. The seventh meter shows an enlarged view of the circumference of the bearing inner surface runner structure. The groove 82 is V-shaped, including the first flow passage 87a and the second flow passage 87b intersecting the intersection portion 88, due to the inside of the top end of the groove 82. The lubricating fluid is in contact with the air, so the lubricating fluid needs to be sealed. In the case of static sorrow, due to the surface tension of the lubricating fluid and the air contact surface to achieve the effect of tamping, please refer to U.S. Patent No. 5, No. 12,142 for related art. When the rotating shaft 8 is rotated relative to the bearing 81, the pressure of the lubricating fluid is increased, and at the same time, the lubricating fluid of the first flow passage 87a and the first//, the first passage 87b flows toward the intersection portion 88, thereby remaining in the first flow passage 87a. And the pressure of the lubricating fluid in both ends of the second flow passage 87b is lowered, and only the pressure of the lubricating fluid in the both ends of the first flow passage 87a and the second flow passage 87b is reduced to less than the external force/force under the action of the above two. In order to prevent lubrication fluids, and leakage, but even if the pressure of the lubricating fluid is slightly lower than the external atmospheric pressure during the rotation process, it may leak. Therefore, it is required to reduce the lubricating fluid to a lower pressure state. Lubricating fluid ^ will leak. The bearing 81 is disposed in a floor member 83, and a venting passage 85 is formed between the outer surface of the bearing 81 and the inner surface of the supporting member (10). The venting passage 85 includes a horizontal portion and a vertical portion, and the rotating shaft 80 is mounted. When in the bearing 81, the gas can be easily escaped from the ventilated passage milk 1269834. However, the venting passage 85 is formed by the bearing 81 and the support member 83. The bearing 81 and the support member 83 are processed and required to be extraordinarily precise and costly. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a fluid dynamic bearing motor having an improved leakage preventing effect. Another technical problem to be solved by the present invention is to provide a fan using the above fluid dynamic bearing motor. In order to solve the technical problem of the present invention, the fluid dynamic bearing motor of the present invention comprises a support member, a stator disposed outside the support member and a rotor supported by the support member, the rotor including a rotating shaft and opposite to the stator a magnet, the support member includes a bearing, the bearing includes a shaft hole through which the rotating shaft is disposed, and the inner wall of the bearing or the outer wall of the rotating shaft is provided with a flow path structure, and the flow path structure is filled with a pressure generated when the rotating shaft rotates to support the The rotating shaft rotates the lubricating fluid. The flow path structure includes a plurality of first and second dynamic pressure grooves arranged at intervals, and each of the first dynamic pressure grooves intersects an adjacent second dynamic pressure groove at an edge of the flow path structure. In order to solve another technical problem of the present invention, the fan of the present invention comprises a frame, a support member, a stator disposed outside the support member and a rotor supported by the support member, the fan frame including a connection to the branch The bottom plate of the member includes a bearing, the bearing includes a shaft hole through which the rotating shaft is disposed, the rotor includes a hub, a plurality of blades disposed on the outer edge of the hub, and a magnet disposed in the outer wheel and the magnet The inner wall of the bearing or the outer wall of the rotating shaft is provided with a flow path structure, and the flow path structure is filled with a pressure generated when the rotating shaft rotates to support the rotating shaft to make the rotating shaft and the bearing in the diameter. a lubricating fluid that is separated upwardly, the flow path structure comprising two sets of continuous "Z" shaped flow passages respectively located in an upper half and a lower half thereof, the two sets of "Z" shaped flow passages respectively above the flow passage structure The lower edge forms an outer intersection, and the two sets of "Z"-shaped flow channels intersect in the middle of the flow channel structure and form an inner intersection zone in the middle of the flow channel structure. When the fluid dynamic bearing motor of the present invention is operated, the lubricating fluid located in each flow passage can be branched through the respective flow passages to form a lower pressure region than the prior art, so that the leakage prevention effect is more desirable. The fan using the above motor works more reliably. [Embodiment] Hereinafter, the present invention will be further described with reference to the accompanying drawings. 1269843 Referring to the first figure, the fan 200 includes a fan frame i having an internal space 2, a support member 4 disposed in the middle of the inner space 2 of the fan frame 1, and a set of support members 4^50 and one The rotor 6 〇 supported by the support member 4〇. The fan frame 1 is made of a plastic material and includes a bottom plate 10. The stator 50 includes upper and lower insulating frames 52 and a door fixed to the two insulating frames
ίί 2之補片51，線圈53環繞於所述賴片51上，_ π “ 屯眭連接於電路板54上，由於絕緣架52之設置該線圈53鱼砂雜! W 不相接觸。 ^ M <轉子60包括一輪轂62、複數環設於輪轂62外表面之扇葉^、貼 攻於輪轂62内表面之環形永久磁鐵66及一自該輪轂62向下垂直延伸 之轉軸68，該磁鐵66與該定子5〇相對從而產生推動該轉子6〇旋轉之 作用力。 如第二圖所示，支撐件4〇置於底板10中部位置，包括一軸管3〇 及一收容於該軸管30内之軸承2〇。 軸管由金屬材料製成，如銅等，通過射出成型而連接於底板1〇 上。該軸管30上端之外徑小於其下端之外徑，從而在該軸管3〇之外 表面上开f成與定子50配合安裝之階梯32。組裝中軸承20自下向上壓 =·該軸f 30内，該軸管30上端形成與軸承2〇頂端相抵頂之環緣34， k而將軸承20限定于軸管3〇内避免轴承2〇被壓出軸管3〇。 軸承20沿軸線之剖面大致呈“u，，形，包括一收容轉軸诏之軸孔 21及與該軸孔21底部連通之透氣通道25，該軸孔21沿軸向之高度小 於軸承20沿軸向之高度，從而該軸承2〇下端呈封閉狀態。 —透氣通道25包括一與軸孔21垂直之第一通道23及與軸孔21平 行且連通該第一通道23與外界之第二通道24，該第一通道23貫穿軸 承20之壁部，該第一通道23面向轴承2〇外部之一端之直徑大於面向 軸，21 —端之直徑，該第一通道23向外之一端利用一塞子％堵住。 將第-通道23設置爲貫穿之方式使透氣通道25之加工更加方便。設 置該塞子26係爲防止潤滑流體自該處泄漏。當轉軸68裝入軸孔21時， 轉軸68前端與軸孔21底部之間之空氣自透氣通道Μ逃出，從而防止 形成氣泡。 軸承20在軸孔21之底端設有一對應於轉軸明之摩擦片22，該摩 1269843 擦片22由具有較高抗摩擦能力之樹脂材料製成。 軸承20内表面設有流道結構100，該流道結構1〇〇内填充有潤滑 流體，當轉軸68高速旋轉時，綠結構1〇〇欧潤滑流體對轉轴酩 産生一定之壓力，從而支撐轉軸68旋轉，避免轉軸68與軸承2〇直接 接觸。可以理解地，該流道結構也可設於轉軸68外表面上。 如第三圖所示爲軸承内表面流道結構之圓周展開放大圖，流道結 構100包括複數間隔排列、1 ‘V，形之第一動壓槽13和第二動壓^ 16。該流道結構100具有由一中線18隔開之上半部及下半部。 曰 每一第一動壓槽13包括位於流道結構100上半部之第一流道工如 及位於流道結構100下半部之第二流道13b。 每一第二動壓槽16包括位於流道結構100上半部之第一流道16a 及位於流道結構100下半部之第二流道16b。 每二第一動壓槽13之第一、第二流道13a、13b與相鄰一第二動壓 槽16之第一、第二流道16a、勘相交於流道結構1〇〇之中線18處， 形成一内父叉區1316a。每一第一動壓槽13之第一、第二流道13a、 ^別與相鄰之另一第二動壓槽16之第一、第二流道16a、16緣相交於 流道結構励的上緣及下緣，從而在流道結構1〇〇之上、下緣分別形 成外交X區1316b。 7 ，相鄰第一動壓槽13之第一流道13a及位於該兩相鄰第一動壓槽 1 一3之.第一流道13a之間之第二動壓槽16之第一流道16a，或兩相鄰第 二動壓槽16之第一流道16a及位於該兩相鄰第二動壓槽16之第一流道 1，，之間之第一動壓槽13之第一流道13a在流道結構1〇〇上半部形成 Z形溝槽。同樣相鄰兩第一動壓槽13之兩第二流道13b及位於該 兩相鄰第一動壓槽13之第二流道13b之間之第二動壓槽16之第二流 ^ ’或相鄰兩第二動壓槽16之兩第二流道16b及位於該兩相鄰第 =動壓槽16之第二流道16b之間之第一動壓槽13之第二流道13b，在 該，結構100下半部形成“Z”形溝槽。上述分別位於流道結構1〇〇上 半部及下半部之“Z”形溝槽交彙於流道結構100之中心線18處，從 而任意相鄰流道之間相互連通。 々當，轴68旋轉時，潤滑流體分別沿第一、第二動壓槽13、16之 第一及第二流道13a、13b、16a、16b流向内交叉區1316a，從而在内 1269843 交叉區1316a形成高壓區，産生較高之壓力，支撐轉軸68旋轉，使轉 軸68與軸承20在徑向上相分離。同時，由於第一、第二動屋槽13、 16之第一及第二流道13a、13b、16a、16b内之潤滑流體流向内交叉區 1316a，在該第一、第二動壓槽13、16之第一及第二流道I3a、13b、 16a、16b之外交叉區1316b形成低壓區。由於外交叉區i316b(即低壓 區）内之潤滑流體能夠經過複數條互相連通之流道流向内交又區1316a (高壓區），使低壓區可形成比現有技術中更低之低壓，從而使具有該 流道結構100之流體動壓軸承馬達具良好之防漏效果。 請參閱第四圖及第五圖，與上述實施例不同之處在於··風扇200, 之支撐件40爲一體構成’同樣該支撐件奶’包括一轴孔21，、一置於該 軸孔21’底部之摩擦片22’、一與軸孔21，連通之透氣通道25,及塞子26,。 綜上所述，本發明符合發明專利要件，爰依法提出專利申請。惟， 以上所述者僅為本發明之較佳實施例，舉凡熟悉本案技藝之人士，在 ^依本發明精神所作之等效修飾或變化，皆應涵蓋於以下之申請專利 範圍内。 【圖式簡單說明】 第一圖係本發明風扇之剖視圖。 第二圖係第一圖所示支撐件之剖視放大圖。 $二圖係第二_示軸承練面流道結構之關展開放大圖。 第四圖係本發明風扇另一實施例之剖視圖。 =五圖係第四圖所示支撐件之剖視放大圖。 第六圖係習知風扇之剖視圖。 第七圖係第六圖巾轴承喊面流道結構之圓周展開放大圖。 【主要元件符號說明】 扇框 1 流道結構 丄 100 第一流道 13 a、16a 内交又區 1316a 第二動壓槽 16 内部空間 2 底板 10 第一動壓槽 13 第二流道 13b、 16b 外交叉區 1316b 中線 18 軸承 20 1269843 風扇 200、 200, 摩擦片 22、 22, 第二通道 24、 24, 塞子 26 階梯 32 支撑件 40、 40, 碎鋼片 51 線圈 53 轉子 60 扇葉 64 轉轴 68 軸孔 21、 21， 第一通道 23、 23, 透氣通道 25、 25, 軸管 30 突起 34 定子 50 絕緣架 52 電路板 54 輪轂 62 永久磁鐵 66The patch 51 of the ίί 2, the coil 53 is wound around the film 51, _ π " 屯眭 is connected to the circuit board 54, and the coil 53 is fish sand due to the arrangement of the insulating frame 52! W does not touch. ^ M <Rotor 60 includes a hub 62, a plurality of blades disposed on the outer surface of the hub 62, an annular permanent magnet 66 that is attached to the inner surface of the hub 62, and a shaft 68 extending vertically downward from the hub 62. 66 is opposite to the stator 5〇 to generate a force for pushing the rotor 6〇. As shown in the second figure, the support member 4 is placed at a central position of the bottom plate 10, including a shaft tube 3〇 and a shaft tube 30. The inner bearing is 2 〇. The shaft tube is made of a metal material, such as copper, and is connected to the bottom plate 1 by injection molding. The outer diameter of the upper end of the shaft tube 30 is smaller than the outer diameter of the lower end thereof, so that the shaft tube 3 is The outer surface of the crucible is opened to form a step 32 which is fitted with the stator 50. In the assembly, the bearing 20 is pressed from the bottom to the top = in the shaft f 30, the upper end of the shaft tube 30 forms a ring edge 34 which abuts the top end of the bearing 2〇. , k is defined in the shaft tube 3〇 to prevent the bearing 2〇 from being pressed out of the shaft tube 3〇. The bearing 20 along the axis The cross section is substantially "u," and includes a shaft hole 21 for receiving the shaft 及 and a gas permeable passage 25 communicating with the bottom of the shaft hole 21. The axial hole height is smaller than the axial height of the bearing 20, thereby The lower end of the bearing 2 is closed. The venting passage 25 includes a first passage 23 perpendicular to the shaft hole 21 and a second passage 24 parallel to the shaft hole 21 and communicating with the first passage 23 and the outside, the first passage 23 penetrating the wall portion of the bearing 20, The diameter of one end of the first passage 23 facing the outer side of the bearing 2 is larger than the diameter of the end facing the shaft, and the end of the first passage 23 is blocked by a plug %. The processing of the venting passage 25 is made more convenient by arranging the first passage 23 in a penetrating manner. The plug 26 is provided to prevent lubrication fluid from leaking therefrom. When the rotating shaft 68 is fitted into the shaft hole 21, air between the front end of the rotating shaft 68 and the bottom of the shaft hole 21 escapes from the venting passage, thereby preventing the formation of air bubbles. The bearing 20 is provided at the bottom end of the shaft hole 21 with a friction plate 22 corresponding to the rotating shaft, and the friction piece 22 is made of a resin material having a high anti-friction ability. The inner surface of the bearing 20 is provided with a flow channel structure 100. The flow channel structure 1 is filled with a lubricating fluid. When the rotating shaft 68 rotates at a high speed, the green structure 1 〇〇 lubricating fluid generates a certain pressure on the rotating shaft ,, thereby supporting The shaft 68 rotates to prevent the shaft 68 from coming into direct contact with the bearing 2〇. It can be understood that the flow path structure can also be disposed on the outer surface of the rotating shaft 68. As shown in the third figure, a circumferential enlarged view of the inner surface runner structure of the bearing is shown. The runner structure 100 includes a plurality of spaced intervals, 1 'V, a first dynamic pressure groove 13 and a second dynamic pressure 16 . The runner structure 100 has an upper half and a lower half separated by a centerline 18.每一 Each of the first dynamic pressure grooves 13 includes a first flow path located in the upper half of the flow path structure 100, and a second flow path 13b located in the lower half of the flow path structure 100. Each of the second dynamic pressure grooves 16 includes a first flow path 16a located in the upper half of the flow path structure 100 and a second flow path 16b located in the lower half of the flow path structure 100. The first and second flow passages 13a and 13b of each of the first dynamic pressure grooves 13 and the first and second flow passages 16a of the adjacent second dynamic pressure generating grooves 16 intersect with each other in the flow path structure 1 At line 18, an inner parent fork region 1316a is formed. The first and second flow paths 13a of each of the first dynamic pressure grooves 13 intersect with the first and second flow paths 16a and 16 of the adjacent second dynamic pressure groove 16 to intersect the flow path structure. The upper edge and the lower edge form a diplomatic X zone 1316b above and below the flow channel structure. 7 , a first flow channel 13a adjacent to the first dynamic pressure groove 13 and a first flow channel 16a of the second dynamic pressure groove 16 between the two adjacent first dynamic pressure grooves 1 - 3 and the first flow channel 13a, Or the first flow path 16a of the two adjacent second dynamic pressure grooves 16 and the first flow path 1 of the two adjacent second dynamic pressure grooves 16, and the first flow path 13a of the first dynamic pressure groove 13 is flowing The upper half of the track structure forms a Z-shaped groove. The second flow path of the second dynamic pressure groove 16 between the two adjacent first dynamic pressure grooves 13 and the second flow path 13b between the two adjacent first dynamic pressure grooves 13 Or the second flow path 16b of the two second dynamic pressure grooves 16 and the second flow path 13b of the first dynamic pressure groove 13 between the two adjacent flow channels 16b of the two adjacent dynamic pressure grooves 16b Here, the lower half of the structure 100 forms a "Z" shaped groove. The above-mentioned "Z"-shaped grooves respectively located in the upper and lower halves of the flow path structure 1 intersect at the center line 18 of the flow path structure 100, so that any adjacent flow paths communicate with each other. When the shaft 68 rotates, the lubricating fluid flows along the first and second flow passages 13a, 13b, 16a, 16b of the first and second dynamic pressure grooves 13, 16 to the inner intersection 1316a, thereby intersecting the 1269834 The 1316a forms a high pressure zone, which produces a higher pressure, and the support shaft 68 rotates to separate the shaft 68 from the bearing 20 in the radial direction. At the same time, since the lubricating fluid in the first and second flow passages 13a, 13b, 16a, 16b of the first and second movable housings 13, 16 flows toward the inner intersection 1316a, the first and second dynamic pressure grooves 13 are The intersection area 1316b outside the first and second flow paths I3a, 13b, 16a, 16b of 16 forms a low pressure region. Since the lubricating fluid in the outer intersection i316b (i.e., the low pressure zone) can flow through the plurality of mutually communicating flow paths to the inner intersection 1316a (high pressure zone), the low pressure zone can form a lower pressure than in the prior art, thereby The fluid dynamic bearing motor having the flow path structure 100 has a good leakproof effect. Referring to the fourth and fifth figures, the difference from the above embodiment is that the fan 200 is integrally formed with the support member 40. The same support member milk includes a shaft hole 21, and a shaft hole 21 is disposed in the shaft hole. The friction piece 22' at the bottom of the 21', a venting passage 25 communicating with the shaft hole 21, and the plug 26 are provided. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a cross-sectional view of a fan of the present invention. The second drawing is a cross-sectional enlarged view of the support member shown in the first figure. $2 is the second _ shows the bearing surface of the bearing surface expansion. The fourth figure is a cross-sectional view of another embodiment of the fan of the present invention. = Five figures are a cross-sectional enlarged view of the support shown in the fourth figure. Figure 6 is a cross-sectional view of a conventional fan. The seventh figure is a magnified view of the circumference of the sixth figure towel bearing shouting flow path structure. [Description of main component symbols] Fan frame 1 Flow path structure 丄100 First flow path 13 a, 16a Internal transfer area 1316a Second dynamic pressure groove 16 Internal space 2 Base plate 10 First dynamic pressure groove 13 Second flow path 13b, 16b Outer intersection 1316b center line 18 bearing 20 1269843 fan 200, 200, friction plates 22, 22, second passage 24, 24, plug 26 step 32 support 40, 40, broken steel sheet 51 coil 53 rotor 60 blade 64 revolution Shaft 68 Shaft bores 21, 21, first passages 23, 23, venting passages 25, 25, shaft tube 30 projections 34 stator 50 insulation frame 52 circuit board 54 hub 62 permanent magnet 66
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