M337015 八、新型說明： 【新型所屬之技術領域】 本新型涉及直流風扇，主要是指一種直流風扇轴承防漏油結構。 【先前技術】 直流風扇自潤軸承結構能普遍應用到散熱風扇裏面的主體結構 的優勢是因為自潤轴承含有一定百分比（20%左右）的潤滑油，當風扇 .轉子連同轴芯在自潤軸承裏面運轉時，因為向心力的作用會把自潤軸 ®承的裏面潤滑油帶出來起到潤滑的作用，從而可以達到降低風扇噪音 和延長壽命的作用。業界利用自潤轴承的這一優勢，大量採用自潤軸 承應用在直流風扇上。而為了充分利用自潤軸承的這一優勢並把這種 -優勢發揮至極至，那就要在風扇運轉時保證自潤軸承裏面的潤滑油不 -流失，保證使用環境裏面的灰塵不能進入到自潤軸承裏。在風扇運轉 時因内部大氣壓增加，潤滑油隨轴芯的離心作用上行甩出。專利號為 200510109112.1的發明專利公開了一種馬達的防漏油結構，此防漏油 ®結構在軸芯的下方設置卡槽，卡環套在卡槽内可防止轴芯脫落，為了 • 防止潤滑油甩出，在軸芯的上方會設置一個比軸承外徑稍大的定位 環，來緩衝潤滑油的上行。同時起到防灰的作用。 【新型内容】 本新型的目的是提供一種直流風扇軸套防漏油結構，充分利用自 潤轴套含油的優勢，採用軸芯上扣式設計，使風扇在高速運轉時能有 效地防止自潤軸承裏面的潤滑油不流失，同時還能起到防塵的作用。 實現本新型的技術方案是：這種防漏油結構包括扇葉、磁塊、定 5 M337015 子、上下絕緣套、軸芯、轴套、電路板和支架，其中扇葉固定在· 的端部，軸芯設置在軸套内，軸套固定在支架中心凸套的孔内，凸: 上面套財奸，奸爾上、下鴨，㈣她的磁塊對 應^特點是：a.所述支架中心凸套的孔為盲孔；b.所述上絕緣套設 有擒¥，额環與軸套端面之間設置有十字扣環和墊圈，其中十 •環_孔卡接在軸糾空槽上；e·所熱套的端面和圓職面分概 .有回油槽。 春 該技術方案還包括： 所述軸芯的 •戶斤速軸领扇葉之間的軸芯根部外圓上設有阻油劑， 空槽内設有阻油劑。 -所述支架中心凸套盲孔底面與軸套端面之間設有墊片，其中解 ^片為，或十飾，所述盲孔底面設有十字形凹槽或梅花狀凹槽， 2片與盲孔底面相配合。 料軸套的端面和圓周表面分職有回油槽，其中端面的回油槽 ·、'、螺旋回油槽，關表面的__線職槽，螺旋 回油槽相通。果 本新型的有益效果在於：由於十字扣環設在轴套的上方，而且由 於十字扣環_徑較軸芯外徑小，可錄止崎油上行甩出，同時為 滑油從十字扣環與軸芯的縫隙中漏掉，在十字扣環上方的轴 從线阻油劑（_種皮朗滑劑，塗_芯上會瞬_發，但在 =表面形成-種越，可有效隔離繼油），可以有效的阻止潤滑 液㈣並回流；在十字扣環的上方設有加擋環的絕緣套，不僅可以將 6 M337015 十字扣環壓住固定，& n1 & 類似封_空間，_在絕縣與外框料心細部形成一 軸套端面順咖ΓΓΓΓ輸均並使其回流。 卿套_M_::套=綠回油槽’使風扇運 用轴與軸套之間夹—圓形塾片，外框底部也為圓形， =二Γ十㈣塾片配合梅花狀外框底部凹槽定位避 免塾片I動，亚且此凹槽可增加儲油空間。 •=城結構_下吸式設計，使產品高度無論在側立或倒立時都 • 避絲峨她蚊子咖獅時尺寸及產品總 -回不易控制’且容易產生起動慢，異音超高等問題。 【實施方式】 下面接合附圖對本新型做進一步說明： 本防漏油結構運用在直流無刷散熱風扇領域。如第i圖或第 :不’扇葉24中間連接有軸训，轴芯u外套軸套13，軸套13外 支架20的凸套2()1，支架2〇底部呈密封結構。支架卻上裝有電路 _，在支架凸套謝外還套有上絕緣套23、下絕緣套22和定子⑸ 疋子2b夹在上絕緣套23和下絕緣套22之間，在支架凸套2部 軸套13之間夾有墊片28。 -㈣口 血如第2 ® ’在軸芯u外靠近扇葉24的部位設有空槽ηι，十字 ^環套在空槽⑴上，在十字扣環21下還設有_ 27，為了將十 予扣％ 21壓住固定，將上絕緣套23加設有擋環231，檔環測髮在 M337015 ^字扣環2i的上面。由於十字扣抑内徑比轴芯 上行的潤滑油，減緩了、、間潛，沾p一、古由 作甘^、、 的仃速度。雖然減慢了潤滑油的甩出， 二济出子广!1和f槽111的接觸處還有縫隙，為了阻止潤滑油從 7 虔r,、十21上方的轴芯11外經和空槽111塗有阻油劑 種皮挺潤滑劑，塗於軸芯上I瞬Η握取 ㈢坪間揮兔，但在軸芯表面形成一種 、 有效隔離潤滑油），如第6圖巾7 ^ .观的上絕緣套23和支⑽1中7所術置。同時加擔環 • 2t；"! ^ 氣子扣衣21和支架凸套凯的接觸處的縫隙中流出。 為了便於潤滑油的回流名笛q .螺旋回油槽131，蝴;直，中所示的购^下端面有 .脇π „外固有直線回油槽132,這樣設計不僅使潤滑油能 .路線圖。 罘b圖中則碩表不的潤滑油流動的 圖中所不的塾片28為圓形，與之相對應的凸套201底部為 避免塾片28移動或轉動，可將軸套直接將墊片_主， 此5又计2作簡單，組裝容易。 广立2 5圖中所不的塾片28為十字四角形，與之相對應的凸套 201底部為梅花狀凹样 * 增加健油空間，同時較;缝片28轉動或移動，還可以 立p 心11和墊片28之間的摩擦，減少了哗 音，增加了實用壽命。 木 5亥直流風扇軸套防漏油結槿 .構了以有效防止自潤風扇内潤滑油的流 ，士人翻控表面長麟於潤·態，從而解決了以前的風扇噪音 ’可〒短的問題’經批量生產及壽命試驗證明，此防漏油結構較以 8 M337015 前的舊的開放式的結構壽命長20%以上。 上述實施例僅是對本新型的具體闡述和說明，並不局限於所公開 的任何具體形式，凡在此基礎上對本新型的任何改進均被視為本新型 的保護範圍。 M337015 【圖式簡單說明】 第1圖是本新型的組裝分解示意圖。 第2圖是第1圖的剖視圖。 第3圖是第1圖的軸套示意圖，其中3a、3c是端面視圖，3b是 剖視圖，3d是立體圖。 第4圖是第1圖的墊片和支架中心凸套盲孔底面示意圖，其中 • 4a是圓形墊片，4b是十字形凹槽底面，5a是十字形墊片，5b是梅花 # 狀凹槽底面。 第5圖是第1圖的墊片和支架中心凸套盲孔底面示意圖，其中 ’ 4a是圓形墊片，4b是十字形凹槽底面，5a是十字形墊片，5b是梅花 狀凹槽底面。 第6圖是第1圖的潤滑油回路示意圖。 【主要元件符號說明】 11軸芯 13軸套 132直線回油槽 20支架 21十字扣環 22下絕緣套 231擋環 24扇葉 26電路板 111空槽 131螺旋回油槽 201凸套 23上絕緣套 25定子 27墊圈 10 M337015 28墊片 7阻油劑M337015 VIII. New description: [New technical field] The new type relates to DC fan, mainly refers to a DC fan bearing anti-leakage structure. [Prior Art] The advantage of the DC fan self-lubricating bearing structure that can be universally applied to the main structure inside the cooling fan is because the self-lubricating bearing contains a certain percentage (about 20%) of lubricating oil, when the fan, the rotor and the shaft core are self-lubricating. When the bearing is running inside, the inner lubricating oil of the self-lubricating shaft can be brought out to play the role of lubrication because of the centripetal force, thereby reducing fan noise and prolonging the life. The industry utilizes this advantage of self-lubricating bearings, and a large number of self-lubricating bearings are used on DC fans. In order to make full use of this advantage of self-lubricating bearings and to bring this advantage to the extreme, it is necessary to ensure that the lubricant inside the self-lubricating bearing is not lost during the operation of the fan, and that the dust inside the use environment cannot enter the self. In the bearing. When the fan is running, the internal atmospheric pressure increases, and the lubricating oil rises out with the centrifugal action of the shaft core. The invention patent of the patent No. 200510109112.1 discloses a leakage preventing structure of a motor. The leakage preventing oil structure is provided with a card slot under the shaft core, and the snap ring is sleeved in the card slot to prevent the shaft core from falling off, in order to prevent lubricating oil. Pull out, a positioning ring slightly larger than the outer diameter of the bearing will be placed above the shaft core to buffer the upward movement of the lubricating oil. At the same time, it plays the role of anti-ash. [New content] The purpose of this new model is to provide a DC fan bushing oil-proof structure, which makes full use of the oil-bearing advantages of the self-lubricating bushing, and adopts the shaft core button-type design to effectively prevent the fan from running at high speed. The lubricating oil inside the bearing is not lost, and it can also play a role in dust prevention. The technical solution of the present invention is that the oil leakage preventing structure comprises a fan blade, a magnetic block, a fixed 5 M337015 sub, an upper and lower insulating sleeve, a shaft core, a bushing, a circuit board and a bracket, wherein the blade is fixed at the end of the · The shaft core is disposed in the sleeve, and the sleeve is fixed in the hole of the convex sleeve of the bracket, convex: the upper set of traitors, the traitor, the lower duck, and (4) the corresponding correspondence of the magnetic block is: a. the center of the bracket The hole of the convex sleeve is a blind hole; b. The upper insulating sleeve is provided with a 擒¥, and a cross buckle ring and a washer are arranged between the front ring and the end surface of the sleeve, wherein the ten ring _ hole is stuck on the shaft correction groove ; e · The end face of the hot sleeve and the round face are divided. There is a return oil tank. Spring The technical solution further includes: an oil-blocking agent is disposed on the outer circumference of the shaft core between the fan core of the shaft core, and an oil-blocking agent is disposed in the hollow groove. - a spacer is arranged between the bottom surface of the blind hole of the bracket center sleeve and the end surface of the sleeve, wherein the chip is a piece or a ten-piece, and the bottom surface of the blind hole is provided with a cross-shaped groove or a plum-shaped groove, 2 pieces Cooperate with the bottom surface of the blind hole. The end face and the circumferential surface of the material sleeve are divided into oil return grooves, wherein the oil return groove of the end face, ', the spiral oil return groove, the __ line groove of the closing surface, and the spiral oil return groove are connected. The beneficial effect of the new type is that since the cross buckle ring is arranged above the sleeve, and because the cross buckle ring _ diameter is smaller than the outer diameter of the shaft core, the oil can be discharged upwards, and at the same time, the oil is removed from the cross ring. Leakage in the gap with the shaft core, the shaft above the cross buckle ring from the line oil-repellent agent (_ seed skin slip agent, coated on the core will be instantaneous, but in the surface formation - the more the species can be effectively isolated Oil), can effectively prevent the lubricating fluid (4) and return; the insulating sleeve with the retaining ring above the cross buckle ring can not only press and fix the 6 M337015 cross buckle ring, & n1 & similar seal _ space, _In the county and the outer frame of the core, a sleeve end face is formed and the steam is returned. Qing _M_:: set = green oil return tank 'to make the fan between the shaft and the bushing - rounded cymbal, the bottom of the outer frame is also round, = two ten (four) 塾 piece with the plum-shaped outer frame bottom concave The groove positioning avoids the movement of the cymbal I, and the groove can increase the oil storage space. •=City structure_Lower suction design, so that the height of the product can be avoided when it is sideways or inverted. • The size and product of the mosquito lion and the lion are not easy to control' and it is easy to produce slow start and abnormal sound. . [Embodiment] The present invention will be further described below with reference to the accompanying drawings: The leakage preventing oil structure is applied to the field of a DC brushless cooling fan. For example, the i-th or the first: no-fan blade 24 is connected with an axial training, a shaft core u-sleeve sleeve 13, a sleeve 13 outer bracket 20 of the boss 2 () 1, and the bottom of the bracket 2 has a sealing structure. The bracket is equipped with a circuit _, and the upper insulating sleeve 23, the lower insulating sleeve 22 and the stator (5) are clamped between the upper insulating sleeve 23 and the lower insulating sleeve 22 in the bracket convex sleeve. A spacer 28 is interposed between the two bushings 13. - (4) The blood of the mouth is as follows: 2) 'There is an empty groove ηι in the area near the fan core 24 near the fan blade 24, and the cross ^ ring is placed on the empty groove (1), and _ 27 is also provided under the cross buckle ring 21, in order to Ten pre-locking % 21 is pressed and fixed, and the upper insulating sleeve 23 is provided with a retaining ring 231, and the retaining ring is measured on the top of the M337015 ^ word clasp 2i. Because the cross buckle suppresses the inner diameter of the lubricating oil that is higher than the axial core, it slows down, and the potential of the dive is the speed of the sputum. Although the lubricating oil is slowed down, the second is wide; there is a gap at the contact between the 1 and the f-slot 111, in order to prevent the lubricating oil from 7 虔r, the outer core of the shaft 11 above the eleven and the empty slot 111 coated with oil-repellent agent seed coat quite lubricant, applied to the shaft core I instantaneously grip (three) flat swing rabbit, but form a kind of effective isolation lubricant on the surface of the shaft core, such as the 6th towel 7 ^. The upper insulating sleeve 23 and the 7 of the branch (10) 1 are placed. At the same time, the ring is added. • 2t;"! ^ The gas clasp 21 and the bracket convex sleeve are in the gap at the contact point. In order to facilitate the return of the lubricating oil, the spiral returning oil tank 131, the straight end surface shown in the middle of the purchase has a flank π „ outer linear return oil groove 132, so that the design not only enables the lubricating oil to provide a road map. In the figure 罘b, the squeegee 28 which is not shown in the figure of the lubricant flow is circular, and the bottom of the protrusion 201 corresponding thereto is to prevent the cymbal 28 from moving or rotating, and the sleeve can be directly put into the pad. Sheet_main, this 5 is counted as simple and easy to assemble. The cymbal 28 which is not included in the wide 2 5 figure is a cross quadrangular shape, and the bottom of the convex sleeve 201 corresponding thereto is a plum-like concave shape* At the same time; the splint 28 rotates or moves, and the friction between the p-heart 11 and the spacer 28 can be established, the arpeggio is reduced, and the practical life is increased. The wooden 5 hai DC fan bushing is resistant to oil leakage. In order to effectively prevent the flow of lubricating oil in the self-lubricating fan, the gentleman's control surface is long and sturdy, thus solving the problem of the previous fan noise 'can be shortened'. It has been proved by mass production and life test that this leakproof The oil structure is more than 20% longer than the old open structure before 8 M337015. The present invention is only to be specifically illustrated and described herein, and is not limited to any specific form disclosed. Any improvement on the present invention is considered to be the scope of protection of the present invention. M337015 [Simple Description] 1 is a schematic exploded view of the present invention. Fig. 2 is a cross-sectional view of Fig. 1. Fig. 3 is a schematic view of the bushing of Fig. 1, wherein 3a, 3c are end views, 3b is a cross-sectional view, and 3d is a perspective view. Figure 1 is a schematic view of the bottom surface of the gasket and the center of the bracket blind hole of Fig. 1, wherein 4a is a circular gasket, 4b is a cruciform groove bottom surface, 5a is a cross-shaped gasket, and 5b is a plum-shaped groove bottom surface Figure 5 is a schematic view of the bottom surface of the blind hole of the gasket and the bracket of the bracket in Fig. 1, wherein '4a is a circular gasket, 4b is a cruciform groove bottom surface, 5a is a cross-shaped gasket, and 5b is a plum-shaped concave Fig. 6 is a schematic diagram of the lubricating oil circuit of Fig. 1. [Main component symbol description] 11 axial core 13 bushing 132 linear oil return groove 20 bracket 21 cross buckle ring 22 insulating sleeve 231 retaining ring 24 blade 26 circuit Plate 111 empty slot 131 spiral return oil groove 201 convex sleeve 23 Upper insulating sleeve 25 stator 27 washer 10 M337015 28 gasket 7 oil retardant