136物6 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種軸承結構，尤其關於一種風扇及其軸承結 構。 【先前技術】 一直以來，風扇常被用來散逸系統内部電子元件運轉中所產 生的熱。而傳統之風扇如圖1所示’該風扇包含定子結構與轉子 結構’該定子結構包括軸承座12及設置於軸承座12内之轴承 14 ’以共同支撐該轉子結構之轉軸16。該軸承14包含内環以及 外環，内環與外環可相對轉動，外環與轴承座12緊配，^環與 ，軸16緊配。因此，相配合的零件不可避免地需有相當的=變 量以達成緊配的要求。但是形變卻造成零件尺寸變異，並且^造 成零件承受應力糾。在運作絲中，轉動_承因摩擦產^ 熱，此熱亦會加重變異的程度。此外，該轉軸在運轉中: 冷縮造成尺寸變異，使磨損加劇，而減少軸承之壽命。因此，，、、^ 運作一段時間後，此變異將影響整個風扇的穩定性。 ， 【發明内容】 本發明之目的在於提供一種風扇及其軸承結構。 根據本發明之一構想，該風扇包括一定子级 承座及設置於該軸承座内之—軸承，其中該軸括一軸 :槽=構;以及一轉子結構’耦合於該定子結 2有- 軸，為該軸承所支樓。 其包括一轉 較佳地，該凹槽結構包含一螺旋切槽、一 切槽、-縱向切槽、-斜向切槽、-多邊形凹二刀槽、-徑向 槽結構可形成於該軸承之内環表面或外^槽，組合。該凹 該轴承之-崎表Φ和-外環表面&相時形成於136. IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a bearing structure, and more particularly to a fan and its bearing structure. [Prior Art] Fans have long been used to dissipate heat generated during operation of electronic components inside the system. The conventional fan is shown in Fig. 1. The fan includes a stator structure and a rotor structure. The stator structure includes a bearing housing 12 and a bearing 14' disposed in the bearing housing 12 to jointly support the rotating shaft 16 of the rotor structure. The bearing 14 includes an inner ring and an outer ring. The inner ring and the outer ring are relatively rotatable, and the outer ring is closely fitted with the bearing housing 12, and the ring and the shaft 16 are tightly fitted. Therefore, the matching parts inevitably require considerable = variables to achieve the tight fit requirements. However, the deformation causes the size of the part to mutate, and the parts are subjected to stress correction. In the operation of the wire, the rotation of the heat is caused by the friction, which also increases the degree of variation. In addition, the shaft is in operation: shrinkage causes dimensional variations, which intensifies wear and reduces bearing life. Therefore, after the operation of , , , ^ for a period of time, this variation will affect the stability of the entire fan. SUMMARY OF THE INVENTION An object of the present invention is to provide a fan and a bearing structure thereof. According to one aspect of the present invention, the fan includes a stator sub-bearing and a bearing disposed in the bearing housing, wherein the shaft includes a shaft: a slot=configuration; and a rotor structure coupled to the stator node 2 has an axle For the bearing building. Preferably, the groove structure comprises a spiral groove, a groove, a longitudinal groove, an oblique groove, a polygonal concave two-slot groove, and a radial groove structure can be formed on the bearing Inner ring surface or outer groove, combined. The concave - the surface of the bearing Φ and the outer ring surface &
21707-CP/TW 5 1364496 此外，該風扇更包含一葉輪，輕接於該轉韩之一端，其中該 葉輪之輪轂内表面具有複數個導流板，當該葉輪旋轉時，該導流 板能導引一氣流通過該凹槽結構。 ，轉軸可具有一凹槽結構，該轉軸之凹槽結構包含一剖面、 一環形切槽、一螺旋切槽、一徑向切槽、一縱向切槽、一斜切槽 或其組合。 根據本發明之另一構想，該軸承結構包括一軸承座；以及一 軸承，設置於該軸承座内，其中該軸承之一表面具有一凹槽結 構0 因此，本發明之風扇於與先前技術相同的接合尺寸下，該轉 軸與該軸承間及/或該承與該軸承座間具有較小的接觸面積，減 少因接合造成的尺寸變異，使得整個結構更為穩定，該轉軸可更 為平順的轉動。並且該軸承的凹槽結構可進一步地容許空氣流 通，將風扇於運作中所產生之熱散逸出去，減少尺寸變異擴大， 維持轉動的穩定性。另外，與轉軸連漏葉輪於連接處周圍設 置的導流板有助於流經該凹槽結構之氣流之對流效果，大幅減少 因熱造成的尺寸變異，增加轉動的穩定性。 關於本發明之優點與精神可以藉由以下的發明詳述及所附圖 式得到進一步的瞭解。 【實施方式】 請參閱圖2A，其為根據本發明第一實施例之風扇〗之剖面 圖。該風扇1包含-轴承座12、一轴承14、—轉軸16、一葉輪 乂及電磁元件19。該風扇1係藉由轴承座12連接至一^ 之固定部2⑽虛示）。 糸統 該軸承座12係用以容置轴承μ。該軸承14係為一滾珠軸 u其包含内環142、外環144以及設置於其_滾珠146。該 14之外環144係緊配於軸承座12中。該轉軸16上形成有 21707-Cp/^y 6 1364496 一凹槽結構，於此f施例中，此凹槽結構絲環形切槽164。 ，軸16穿過轴承Μ之内環142，並與内環142緊配。軸承μ上 定義兩相對的表面148a、灘，環形切槽164具有兩個部分 购、祕分別超出前述的表面_、_。藉此，環形切槽 164可容許空氣流經環形切槽164，可將風扇丨於運作中產生之 去。補充說明的是，葉輪18與轉軸之—端_，該風 =更包3-磁環182’與電磁元件19間磁場作用達到轉動的目 於本發明第二實施例中，該凹槽結構可為斜向切槽财，如 m於i發明第三實施例中，該凹槽結構包含—或數個 螺方疋切槽164"，如圖2C所示。 本Λ明第四實施例中’該凹槽結構包含數個徑向切槽 a以及連接控向切槽馳，”之縱向切槽祕，”（在此所述之轳 向和縱向係相對於轉軸中心線（如圖t虛線所示）而言），如^ 2D所不。雖然徑向切槽馳",沒有直接連通外部 =槽祕，，顺接，整_麵構村料 徑向= 請^關3A，其繪示根據本發明第五實施例之風扇3 、、上述第-實施例相較，該凹槽結構包含數個剖面现 =數個切槽364b，其轉軸36之立體放觸如圖3B所示。舍葉 ^疋轉時’其上的導流板384將導引氣流F通過剖面364=及 产板氣流F的路彳辞意如圖3A中之虛翁頭所示。導 内表面計係如S 3C所示，形成於該葉輪38之杯狀輪穀 内表面’可有助於導引氣流F穿過凹槽結構，使 運作中所產生之聽更迅速地藉由氣流F散逸出去。^ ;21707-CP/TW 5 1364496 In addition, the fan further comprises an impeller, which is lightly connected to one end of the rotating body, wherein the inner surface of the hub of the impeller has a plurality of baffles, and when the impeller rotates, the baffle can A gas flow is directed through the groove structure. The rotating shaft may have a groove structure, and the groove structure of the rotating shaft comprises a cross section, an annular slit, a spiral cut groove, a radial cut groove, a longitudinal cut groove, a chamfer groove or a combination thereof. According to another aspect of the present invention, the bearing structure includes a bearing housing; and a bearing disposed in the bearing housing, wherein one surface of the bearing has a groove structure 0. Therefore, the fan of the present invention is the same as the prior art The joint size has a small contact area between the shaft and the bearing and/or the bearing housing, reducing the dimensional variation caused by the joint, so that the entire structure is more stable, and the shaft can be rotated more smoothly. . Moreover, the groove structure of the bearing can further allow air to flow, dissipate heat generated by the fan during operation, reduce dimensional variation and maintain rotational stability. In addition, the baffle disposed around the joint with the rotating shaft of the rotating shaft contributes to the convection effect of the airflow flowing through the groove structure, greatly reducing the dimensional variation caused by heat and increasing the stability of the rotation. The advantages and spirit of the present invention will be further understood from the following detailed description of the invention. [Embodiment] Please refer to Fig. 2A, which is a cross-sectional view of a fan according to a first embodiment of the present invention. The fan 1 includes a bearing housing 12, a bearing 14, a shaft 16, an impeller, and an electromagnetic element 19. The fan 1 is connected to the fixing portion 2 (10) of the housing by the bearing housing 12). The bearing housing 12 is used to accommodate the bearing μ. The bearing 14 is a ball shaft u that includes an inner ring 142, an outer ring 144, and a ball 146 disposed therein. The outer ring 144 of the 14 is tightly fitted in the bearing housing 12. The shaft 16 is formed with a groove structure of 21707-Cp/^y 6 1364496. In this embodiment, the groove structure has a wire-shaped slit 164. The shaft 16 passes through the inner ring 142 of the bearing bore and is mated with the inner ring 142. The bearing μ defines two opposite surfaces 148a, a beach, and the annular slot 164 has two parts, respectively, which exceed the aforementioned surface _, _. Thereby, the annular slot 164 allows air to flow through the annular slot 164, which can be generated during operation of the fan. In addition, the impeller 18 and the end of the rotating shaft _, the wind = more includes the magnetic field between the magnetic ring 182 ′ and the electromagnetic element 19 to achieve the rotation of the second embodiment of the present invention, the groove structure can In the third embodiment of the invention, the groove structure includes - or a plurality of spiral grooving grooves 164 " as shown in Fig. 2C. In the fourth embodiment of the present invention, the groove structure includes a plurality of radial slits a and a connection control slit, "the longitudinal slits are secret," (the orientations and longitudinal directions described herein are relative to The axis of the shaft (as shown by the dashed line in t), as ^2D does not. Although the radial grooving is not directly connected to the outer surface, the splicing, the whole _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In comparison with the above-described first embodiment, the groove structure comprises a plurality of sections now = a plurality of slots 364b, and the three-dimensional contact of the shaft 36 is as shown in FIG. 3B. When the deflector 疋 turns, the deflector 384 on it guides the flow of air F through the section 364 = and the flow of the plate flow F is shown in Fig. 3A. The internal surface of the inner surface of the cup-shaped trough of the impeller 38, as shown in S3C, can help guide the airflow F through the groove structure, so that the operation generated in operation can be more quickly The airflow F is dissipated. ^ ;
21707-CP/TW 7 1^04496 軸二：=:=Γ槽結構時’除可減少轉轴與 穿結構的二結$ 的尺寸變異’亦可於具有貫 變異，進而增加裝置的使用壽命及其使用穩定性。而產生的尺寸 於軸^ 成於轉軸上’亦可形成 果達到減少尺寸變異，並進—步加強散執的效 =4Α偏會示根據本發明帛六實施 m致相似，其差異在於__:軸承ί 承刀槽5422 (與轉轴延伸方向相同）形成於軸 轉軸接人時二接觸t籍如第4Β圖所示之立體放大圖’藉此減少與 個相掛的矣=觸積。此外，縱向切槽5422貫穿轴承54之兩 5422可形成通道424 °藉此’轉軸與軸承54接合後，縱向切槽 逸出去Λ s供空氣經過，將軸承54運作時產生之熱散 "、工氣通過的路彳变如圖4A之箭頭所示。 ”、 如圖田4^所述縱向切# 5422可替代成螺旋或斜向切槽5422,， 合圖所7F。凹槽結構#财可為前述讀助m之組 、此外，軸承之内環542及外環544 ^ 5442 , « 4D ( 狀，但本發日W為限^於本㈣之軸 =，與軸承座之配合亦有尺寸變異== 軸承之外環上形成數個切槽，可減少轴 =之 座的步地降低抽承與轴承 子軸承及對轴承與轉轴接合的影響 ΓΓΓ 5r貫穿軸承54,之兩個相對的表驟 遲亦有如内環542上的切槽助，-般的散熱效果，不=21707-CP/TW 7 1^04496 Axis 2:=:= When the groove structure is used, the size variation of the two knots can be reduced to reduce the rotation of the shaft and the structure. Its use stability. The resulting size is formed on the axis of the shaft, which can also form a fruit to reduce the size variation, and further enhances the effect of the looseness. 4 The bias is shown to be similar according to the present invention. The difference is that __: Bearing ί The sipe 5422 (same as the direction in which the shaft extends) is formed when the shaft is connected to the shaft. The two contacts are in a magnified view as shown in Fig. 4, thereby reducing the 矣=contact. In addition, the longitudinal slits 5422 penetrating the two 5442 of the bearing 54 can form a passage 424. Thus, after the 'rotation shaft is engaged with the bearing 54, the longitudinal slit escapes Λ s for air to pass, and the heat generated when the bearing 54 operates is " The path through which the work air passes is shown by the arrow in Fig. 4A. ”, Fig. 4^ The longitudinal cut # 5422 can be replaced by a spiral or oblique cut 5422, which is shown in Fig. 7F. The groove structure #财 can be the group of the aforementioned read aid m, in addition, the inner ring of the bearing 542 and outer ring 544 ^ 5442 , « 4D ( shape, but the current day W is limited to the axis of this (four) =, the fit with the bearing seat also has dimensional variation == several slots are formed on the outer ring of the bearing, The step of reducing the shaft = seat can be reduced to reduce the influence of the pumping bearing and the bearing sub-bearing and the bearing and the shaft coupling. 5r through the bearing 54, the two opposite tables are also delayed as the grooving on the inner ring 542. - the general cooling effect, no =
21707CP/TW 8 1364496 述 雖然'料實施辭以具有貫穿轴承之_對表面之凹槽結構 二明，但本發明不以此為限。本發明風扇之凹槽結構亦得為多 積’進而減少接合時產生的尺寸變異。 综上職，本個之轉軸或軸承具有凹槽結構，可減 或者軸承熱承座之接觸_，大·低接合時產生的尺 I變ί ’使得整個結構更為穩定，該轉軸可更為平順的轉動ί 卜’貝穿軸承兩相對表面之凹槽結構可進 =扇於運作中所產生之熱散逸出去，減少尺寸變二=1持 另外，與該轉軸連接的葉輪於連接處周圍設置的 該凹槽結構之氣流的對流效果，大幅減少因献 k成的尺寸變異，增加轉動的穩定性。 ”、 體實施例之詳述，係希望能更加清楚描述本 二明夕二广❿並非以上述所揭露的較佳具體實施例來對 以限制。相反地，其目的是希望能涵蓋各種改變 於ί發明所欲申請之專利範圍的範嘴内。因 廣一寬 【圖式簡單說明】 l ，、料_女徘 圖1係繪示傳統風扇之剖面圖。 圖2Α係繪示根據本發明第一實施例之風扇之剖面圖。 圖2Β係繪示根據本發明第二實施例之風扇之剖面圖。 圖2C係繪禮據本發明第三實施例之風扇之剖面圖。 圖犯係繪不根據本發明第四實施例之風扇之剖面圖。 圖3A係繪碰據本發明第五實施例之風扇之剖面圖。21707CP/TW 8 1364496 Although the description of the material has a groove structure with a through-bearing surface, the invention is not limited thereto. The groove structure of the fan of the present invention also has a multi-product' to reduce the dimensional variation produced during joining. In the above, the shaft or bearing has a groove structure, which can reduce the contact of the bearing heat bearing seat _, and the size I generated when the large and low joints become 'the whole structure is more stable, and the rotating shaft can be more Smooth rotation ί 卜 'Bei wear bearing two opposite surface groove structure can enter = fan generated in the heat generated by the operation, reduce the size of two = 1 hold, the impeller connected to the shaft is placed around the joint The convection effect of the airflow of the groove structure greatly reduces the dimensional variation due to the contribution and increases the stability of the rotation. The detailed description of the embodiments is intended to provide a clearer description of the present invention, and is not intended to limit the preferred embodiments disclosed above. Instead, the purpose is to cover various changes. ίInvented in the scope of the patent scope of the application. Because of the wide width [illustration of the simple description] l, material _ female 徘 Figure 1 is a cross-sectional view of the conventional fan. Figure 2 shows the Figure 2 is a cross-sectional view of a fan according to a second embodiment of the present invention. Figure 2C is a cross-sectional view of a fan according to a third embodiment of the present invention. A cross-sectional view of a fan according to a fourth embodiment of the present invention. Fig. 3A is a cross-sectional view showing a fan according to a fifth embodiment of the present invention.
21707-CP/TW 9 1364496 圖3B係繪示圖3A所示風扇之轉軸的立體圖。 圖3C係緣示圖3A所示風扇之葉輪的立體圖。 圖4A係繪示根據本發明第六實施例之風扇之剖面圖。 圖4B至40為圖4A所示之風扇的各種軸承態樣之立體圖。 【主要元件符號說明】 2 :固定部 14、34、54 :軸承 18 :葉輪 F :氣流 184、384 :導流板 146 :滾珠 5422 ::縱向切槽 164am、364b :徑向切槽 164b”’ ：縱向切槽 364a :剖面 1、3 :風扇 12 :軸承座 16、36 :轉轴 19 :電磁元件 142、542 :内環 144、544 :外環 148a、148b、5424、5444 :表面 164 :環形切槽 164'、164” ：斜向切槽 182 :磁環 5422'、5442 :螺旋或斜向切槽 21707-CP/TW 1021707-CP/TW 9 1364496 FIG. 3B is a perspective view showing the rotating shaft of the fan shown in FIG. 3A. Fig. 3C is a perspective view showing the impeller of the fan shown in Fig. 3A. 4A is a cross-sectional view showing a fan according to a sixth embodiment of the present invention. 4B to 40 are perspective views of various bearing aspects of the fan shown in Fig. 4A. [Main component symbol description] 2: fixing portion 14, 34, 54: bearing 18: impeller F: air flow 184, 384: deflector 146: ball 5422 :: longitudinal slit 164am, 364b: radial slit 164b"' : longitudinal slit 364a: section 1, 3: fan 12: bearing block 16, 36: shaft 19: electromagnetic elements 142, 542: inner ring 144, 544: outer ring 148a, 148b, 5424, 5444: surface 164: ring Grooves 164', 164": oblique slots 182: magnetic rings 5422', 5442: spiral or oblique slots 21707-CP/TW 10