M314275 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種動壓軸承’特別關於一種自密性含油動壓 轴承。 【先前技術】M314275 VIII. New description: [New technical field] This creation is about a kind of dynamic pressure bearing', especially about a self-tight oil-containing dynamic pressure bearing. [Prior Art]
為因應各種馬達之轉速，軸承之種類便相應而生，習知技術 經常以液體動壓軸承（Fluid Dynamic Bearing，FDB )提供轉袖必要 的潤滑。請參照第1A圖所示，一種習用之含油動壓軸承1係主要 包括一本體10，本體1〇係具有二端部η、13及一中間部12。該 等端部11、13之内壁面形成複數個壓溝14，該等壓溝14可為人 字形、V字形、魚骨形、斜紋或直條紋。巾間部12形成儲油槽， 以提供轉轴必要之潤滑。請參照第1Β圖所示，當一轉轴s運轉時， 壓溝14帶動潤滑流體。產生作用力f均勻侧於轉軸s的周緣， 以提供轉軸S潤滑與支撐。 然而’隨著轉軸s之運轉， 流體〇沿著轉軸S的軸向外漏， 軸承1之潤滑與支撐效用降低 使用壽命。 不論該等壓溝14如何設計，潤滑 而會產生軸向漏壓，導致含油動壓 ’影響含油動壓軸承1之可靠度及 向漏壓 =此’如何提供-種自密性含油動壓軸承以防止潤滑油的轴 5 M314275 【新型内容】 有鑑於上述課題，本創作之目的為提供一種自密性含油動壓 轴承藉由軸承本體的結構設計，以防止潤滑油的轴向漏壓，維持 穩定的潤滑與支撐作用，增進轴承之可靠度及使用壽命。 有鑑於上述課題，本創作之目的為提供一種自密性含油動壓 軸承，藉由軸承本體搭配轉軸的結構設計，以防止潤滑油的軸向 漏壓，維持穩定的潤滑與支撐作用，增進軸承之可靠度及使用壽 命。 緣是，為達上述目的，依據本創作之一種自密性含油動壓輛 承係為一轉軸所穿設，軸承包括一本體以及一動壓結構。本體係 為中空環柱狀並具有一穿孔，轉軸穿設於穿孔，本體沿著轉軸方 向區分為一第一端部、一中間部及一第二端部。動壓結構係具有 複數個溝槽，該等溝槽設置於軸承之中間部的内壁。 為達上述目的，依據本創作之另一種自密性含油動壓軸承係 為一轉軸所穿設，軸承包括一本體以及一動壓結構。本體係為中 空環柱狀並具有-穿孔，_穿設於穿孔，本體沿著轉轴方向區 刀為第*而部、一中間部及一第二端部。動壓結構係具有複數 個溝槽，該等溝槽設置於轉軸之外壁且對應軸承之中間部。 承上所述，本創狀-種自密性含油龍軸承係藉由將動壓 結構設置於軸承本體之中間部的内壁，或將動壓結構設置於轉轴 之外壁且對應軸承之中間部，軸承本體的二端部與轉軸之間具有 M314275 •近似賴的最/】、卩猶。相較於胃知技術，本創作能財效防止潤 ^ 滑油的軸向漏壓，維持穩定之液體壓力，使自密性含油動壓軸承 提供穩定的潤滑與#向支撐，增加軸承之可靠度及使用壽命。 【實施方式】 以下將參照相關圖式，說明依據本創作實施例之一種自密性 含油動壓軸承，其中相同的元件將以相同的參照符號加以說明。 第一實施例 請參照第2圖所示，本創作第一實施例之一種自密性含油動 壓轴承的部伤切面圖，轴承2係為一轉轴（圖未顯示）所穿設且 包括一本體20以及一動壓結構24。本體20係為中空環柱狀並具 有一穿孔25供轉轴牙没。本體20沿轴向可區分為一第一端部21、 一中間部22及一苐一端部23。於本實施例中，第一端部21及第 二端部23之内壁係為一正圓弧結構。需注意的是，第一端部21 I 及第二端部23之孔徑係略大於轉軸的直徑，以使轉軸與本體2〇 之第一端部21及弟二端部23的内壁之間具有近似封閉的最小間 隙，防止潤滑油的軸向漏壓。 動壓結構24係具有複數個溝槽240，該等溝槽240設置於中 間部22之内壁221。於本實施例中，動壓結構24係與本體20 — 體成型製成，該等溝槽240係為斜弧狀溝槽，並與圓弧狀内壁221 間隔設置。自密性含油動壓軸承2的動壓結構24係容置並導引潤 滑流體，分佈於該等溝槽240與轉軸之間。 7 M314275 *3A^ 〇 3 圖所不，動壓結構24之該 弟 置方式射為_設置的分佈射呈對稱分佈，設 或直弧狀、、雜、.Μ 5連⑽置，溝槽形狀係可呈斜弧狀溝槽 —/日’私與轉軸之鱗係為變_，例如漸. 且溝槽係可與轉軸方向 川雜日或漸減， 置，亦即# Td ’村與轉財向呈斜向設 本實：二 旋方式設置於中間部22之内壁如。於In order to respond to the various motor speeds, the types of bearings are correspondingly produced. Conventional techniques often provide the necessary lubrication of the sleeves with Fluid Dynamic Bearing (FDB). Referring to Fig. 1A, a conventional oil-containing dynamic pressure bearing 1 mainly includes a body 10 having two end portions η, 13 and an intermediate portion 12. The inner wall faces of the end portions 11, 13 form a plurality of nips 14, which may be in the shape of a chevron, a V-shape, a fishbone, a twill or a straight stripe. The inter-tray portion 12 forms an oil sump to provide the necessary lubrication of the shaft. Referring to Figure 1, when the shaft s is running, the nip 14 drives the lubricating fluid. The generating force f is evenly distributed on the circumference of the rotating shaft s to provide lubrication and support of the rotating shaft S. However, as the shaft s is operated, the fluid enthalpy leaks along the axial direction of the rotating shaft S, and the lubrication and support effects of the bearing 1 reduce the service life. Regardless of how the gutter 14 is designed, lubrication will cause axial leakage pressure, resulting in oily dynamic pressure 'affecting the reliability of the oil-containing dynamic pressure bearing 1 and the leakage pressure = how to provide a kind of self-tight oil-containing dynamic pressure bearing In order to prevent the shaft of lubricating oil 5 M314275 [New content] In view of the above problems, the purpose of the present invention is to provide a self-tight oil-containing dynamic pressure bearing by the structural design of the bearing body to prevent axial leakage of lubricating oil and maintain Stable lubrication and support to improve bearing reliability and service life. In view of the above problems, the purpose of the present invention is to provide a self-tight oil-containing dynamic pressure bearing, which is designed with the bearing body and the rotating shaft to prevent axial leakage of the lubricating oil, maintain stable lubrication and support, and enhance the bearing. Reliability and service life. The reason is that, in order to achieve the above purpose, a self-tight oil-containing dynamic pressure bearing system according to the present invention is worn by a rotating shaft, and the bearing comprises a body and a dynamic pressure structure. The system has a hollow ring shape and has a perforation, and the rotating shaft is disposed through the through hole. The body is divided into a first end portion, an intermediate portion and a second end portion along the direction of the rotating shaft. The dynamic pressure structure has a plurality of grooves which are disposed on the inner wall of the intermediate portion of the bearing. In order to achieve the above object, another self-tight oil-containing dynamic pressure bearing according to the present invention is provided by a rotating shaft, and the bearing comprises a body and a dynamic pressure structure. The system has a hollow cylindrical shape and has a perforation, which is formed in the perforation, and the body is divided into a *th portion, an intermediate portion and a second end portion along the direction of the rotation axis. The dynamic pressure structure has a plurality of grooves disposed on the outer wall of the rotating shaft and corresponding to the intermediate portion of the bearing. According to the above description, the present invention is a self-tight oil-filled bearing which is disposed on the inner wall of the middle portion of the bearing body by the dynamic pressure structure, or the dynamic pressure structure is disposed on the outer wall of the rotating shaft and corresponds to the middle portion of the bearing. There is M314275 between the two ends of the bearing body and the rotating shaft. Compared with the stomach technology, this creation can prevent the axial leakage pressure of the lubricating oil and maintain the stable liquid pressure, so that the self-tight oil-containing dynamic pressure bearing provides stable lubrication and #向向Support, increasing the reliability of the bearing. Degree and service life. [Embodiment] Hereinafter, a self-sealing oil-containing dynamic pressure bearing according to the present embodiment will be described with reference to the related drawings, wherein the same elements will be described with the same reference numerals. First Embodiment Referring to FIG. 2, in the first embodiment of the present invention, a self-sealing oil-containing dynamic pressure bearing bearing is cut out. The bearing 2 is a shaft (not shown) and is included. A body 20 and a dynamic pressure structure 24. The body 20 is hollow cylindrical and has a perforation 25 for the shaft. The body 20 can be divided into a first end portion 21, an intermediate portion 22 and an end portion 23 in the axial direction. In the present embodiment, the inner walls of the first end portion 21 and the second end portion 23 have a positive circular arc structure. It should be noted that the apertures of the first end portion 21 I and the second end portion 23 are slightly larger than the diameter of the rotating shaft so that the rotating shaft has a relationship between the first end portion 21 of the body 2 and the inner wall of the second end portion 23 The approximately closed minimum gap prevents axial leakage of the lubricating oil. The dynamic pressure structure 24 has a plurality of grooves 240 which are disposed on the inner wall 221 of the intermediate portion 22. In the present embodiment, the dynamic pressure structure 24 is integrally formed with the body 20, and the grooves 240 are inclined arc-shaped grooves and are spaced apart from the arc-shaped inner wall 221. The dynamic pressure structure 24 of the self-tight oil-containing dynamic pressure bearing 2 receives and guides the lubricating fluid, and is distributed between the grooves 240 and the rotating shaft. 7 M314275 *3A^ 〇3 Figure No, the dynamic structure of the dynamic structure 24 is set to _ set distribution of the symmetry distribution, set or straight arc, miscellaneous, Μ 5 (10), groove shape The system can be inclined arc-shaped groove-/the day's private and the axis of the shaft is changed _, for example, gradually. And the groove system can be mixed with the direction of the shaft, or it is reduced, that is, #Td '村和转财In the oblique direction, the inner wall of the intermediate portion 22 is disposed in a two-rotation manner. to
'I 5 ^ X 之距離係沿著轉轴約相等， 為間隔設置呈漸減，該等斜弧狀溝槽240係 ^ 、〒間部22之圓弧狀内壁221。 面圖密性含油動難承經轉軸穿設之後的中間部剖 穿孔…當轉軸=、,’日rrs嫩自密性含油動壓轴承2的 功的潤、、= 運轉時，轉轴8與本體2〇之内壁 槽冰相__雜24之各斜弧狀溝 在各斜弧狀溝槽 小，潤_。__;生tA:與;1軸8之距離最 供轉轴S-支〜Λ產生1纽向，藉以提 中間部22之内1 221於料斜弧狀溝槽24G係對期隔分佈於 约依其輸力辦嶋，使_能 之交互作用^ 卜，隨著轉軸S旋轉與動壓結構24 第二端部Β 軸向壓力，由於第—端部21及 '、、、動壓結構，便阻斷中間部22產生之軸向屢力， M314275 形成-防漏壓結構，使自密㈣_ 力皆可封賴咖，料恤纖棒 向之s 第二實施例 請參照第4A圖與第犯圖所示，其為本創作之一轴承 由一娜及—自含㈣_承3爾。自瓣油動壓轴 承3 〇括本體30以及—動壓結構％。於本實施例中，本體％ 及祕結構34之構她__實_彻性含油動壓 軸承2_，故不再贅述。本實施例不同之處在於：動壓結構糾 係設置於雜S，之外魅對胁本體30种_ 32。並且 個斜弧狀溝槽34G。當轉軸S，以順時針方向運轉時，轉軸s，與本體 30之内壁的潤滑流體〇受轉軸s，帶動，由於動壓結構％之各斜 弧狀溝槽340相對於轉軸Si旋轉方向與本體3〇之内壁之距離為漸 減。此日守’潤滑流體〇’在各斜弧狀溝槽34〇 _近於本體如之内壁 處，由於轉軸S1與本體30之内壁之距離最小，潤滑流體〇,產生一 最大徑向_力Ρ，囉能夠提供娜s，—敎的切力，避免 轉轴S’摩擦本體3G之内壁，增進可靠度及使用壽命。 綜上所述，本創作之-種自密性含油動壓軸承係藉由將一動 壓結構設置於轴承本體之巾間部_壁，或將_結構設置在轉 軸的外壁且對應軸承之中間部，轴承本體的二端部形成封閉狀。 相較於習知技術，本創作能夠有效防止潤滑油的軸向漏壓，維持 穩定之液體壓力，使自密性含油動壓軸承提供穩定的潤滑與徑向 支撐，增加軸承之可靠度及使用壽命。 M314275 以上所述僅為舉例性，而非為限制 之精神與_，而對其進行之等效修改或”壬何未脫離本創作 之申請專利範圍巾。 1 ’均應包含於後附 【圖式簡單說明】 第1A圖顯示-種習用之含油動壓軸承； 運轉作用力分 佈的示意圖； 第1B麵示轉軸穿設於習用含油動壓轴承時， 弟2圖顯不依據本創作第—實 .她例之一種自费性含油動壓軸 承的部份切面圖； 意圖； 第3A醜示第2圖所示之自密性含油 之中間部的示 第3B圖顯示第3A圖之自密性含油動壓轴承經轉轴穿設之後 的中間部剖面圖； 第4八圖顯示本創作之—軸承組件的示意圖；以及 第4B圖係為第4A圖之自密性含油動壓轴承經轉轴穿設之後 的中間部剖面圖。 【主要元件符號說明】 24,34 動壓結構 25 穿孔 21 内壁 1 含油動壓轴承 2’3 自密性含油動壓軸承 1Θ’ 20, 3〇 本體 M314275 11，13端部 12, 22, 32中間部 14 壓溝 ‘ 21，31第一端部 . 23, 33第二端部 240,340 溝槽 f、F、F作用力 ο、Ο、0’潤滑流體 s、S、S，轉軸The distances of 'I 5 ^ X are approximately equal along the axis of rotation, and are gradually decreasing for the interval. The oblique arc-shaped grooves 240 are the arc-shaped inner walls 221 of the inter-turn portion 22. The surface seal is oily and difficult to pass through the middle section after the shaft is pierced. When the shaft =,, 'day rrs tender self-tight oil dynamic pressure bearing 2's work, and = operation, the shaft 8 and The inner wall of the body 2 槽 冰 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __; raw tA: and; the distance of the 1 axis 8 is the most for the rotation axis S-branch ~ Λ produces 1 new direction, so that the inner portion 22 is 1 221 in the oblique arc-shaped groove 24G is distributed over the interval According to its power transmission, the interaction of _ can be made, with the rotation of the rotating shaft S and the second end of the dynamic pressure structure 24, the axial pressure, due to the first end portion 21 and the ',,, dynamic pressure structure, The axial force generated by the intermediate portion 22 is blocked, and the M314275 forms a leakage-proof structure, so that the self-adhesive (four) _ force can be sealed, and the t-shirt is swung. For the second embodiment, please refer to FIG. 4A and As shown in the figure, one of its creations is bearing one and the other is a self-contained (four) _ cheng 3 er. The self-closing oil dynamic bearing bearing 3 includes the body 30 and the dynamic pressure structure %. In the present embodiment, the body % and the secret structure 34 are constructed to be __solid_transparent oil-containing dynamic pressure bearing 2_, and therefore will not be described again. The difference in this embodiment is that the dynamic pressure structure is arranged in the miscellaneous S, and the external charm is 30 kinds of the body. And an oblique arc groove 34G. When the rotating shaft S is operated in the clockwise direction, the lubricating shaft s of the rotating shaft s and the inner wall of the body 30 is driven by the rotating shaft s, and the rotating shaft 340 of the dynamic pressure structure is rotated relative to the rotating shaft Si and the body. The distance between the inner walls of 3〇 is decreasing. This day's 'lubricating fluid 〇' is located at the inner wall of the body such as the inclined arc groove 34 〇 close to the inner wall of the body. Since the distance between the rotating shaft S1 and the inner wall of the body 30 is the smallest, the lubricating fluid 〇 generates a maximum radial force. , 啰 can provide the shear force of Na s, 敎, avoid the shaft S' friction on the inner wall of the body 3G, to improve reliability and service life. In summary, the self-tight oil-containing dynamic pressure bearing of the present invention is provided by disposing a dynamic pressure structure on the outer wall of the bearing body, or arranging the structure on the outer wall of the rotating shaft and corresponding to the middle portion of the bearing. The two ends of the bearing body are formed in a closed shape. Compared with the prior art, the creation can effectively prevent the axial leakage of lubricating oil, maintain a stable liquid pressure, and provide stable lubrication and radial support for the self-tight oil-containing dynamic pressure bearing, thereby increasing the reliability and use of the bearing. life. M314275 The above description is for illustrative purposes only and is not intended to be a limitation of the spirit of the invention, and the equivalent modifications thereof or "the application is not departing from the scope of the invention. 1 ' should be included in the attached figure Brief description of the formula] Figure 1A shows the oil-using dynamic bearing of the conventional use; schematic diagram of the distribution of the running force; the 1B surface shows that the rotating shaft is worn in the conventional oil-filled dynamic bearing, the second figure is not based on the creation of the first Partial cutaway view of a self-fitting oil-containing dynamic pressure bearing of her example; intention; Figure 3B of the middle part of the self-tight oily portion shown in Fig. 3A shows the self-tight oily part of Fig. 3A A cross-sectional view of the intermediate part of the dynamic pressure bearing after the shaft is threaded; Figure 4 shows a schematic view of the bearing assembly of the present invention; and Figure 4B shows the self-tight oil-containing dynamic pressure bearing of the 4A figure through the shaft. Sectional view of the middle part. [Main component symbol description] 24,34 Dynamic pressure structure 25 Perforation 21 Inner wall 1 Oil-containing dynamic pressure bearing 2'3 Self-tight oil-containing dynamic pressure bearing 1Θ' 20, 3〇 body M314275 11,13 End 12, 22, 32 intermediate portion 14 gully ' 21, 31 first end. 23, 33 second end 240, 340 groove f, F, F force ο, Ο, 0' lubrication fluid s, S, S, shaft
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