TW515872B - Fluid bearing device and magnetic disk device using fluid bearing device - Google Patents

Abstract

A fluid bearing device which fills a conductive lubricant 6 containing an electrostatic charge preventive agent in a bearing clearance between a bearing sleeve 2 (sleeve 2) and bearing shaft 3 (shaft 3), and a magnetic disk device using this fluid bearing device. This configuration enables to continuously discharge static electricity charged in the shaft 3, a rotary part, to the sleeve 2, a fixed part, through the conductive lubricant 6. Accordingly, electrostatic charge is not built up in the shaft 3, which is the rotary part, even at high speed rotation.

Description

515872 A7 B7 五、 發明說明（1) 本發明係有關於典型用來驅動在磁碟裝置中之磁碟的 轉轴馬達之動麼力流體軸承裝置的領域，及使用該種流體 2承裝置的磁碟裝置。特別是，本發明係有關於流體轴承 裝置’其可防止在高速旋轉時靜電蓄存於旋轉構件者。 卜第5圖示出-旋轉軸徑向軸承，而第6圖示出_固定轴 役向軸承’乃作為f知動壓力流體軸承裝置的例子。 首先，該旋轉軸徑向軸承的構造及操作係參考第$圖 來兒月肖旋轉軸控向軸承包含一轴承套筒2(套筒2)，轴 承轴3(軸3)具有動壓力產生溝4，及㈣劑7。該潤滑劑7 係被以毛細作用納持於該套筒2與轴3的轴承面之間的轴承 容隙中。 當該旋轉軸徑向軸承操作時，該軸3會被一驅動器（未 ’、出）驅轉^在開始方疋轉S寺，該軸3會被該動壓力產生溝 4所產生的潤滑劑7動壓力由該套筒2分開。若旋轉更快， 則該潤滑劑7的動壓力亦會增加，故該軸3會相對於該套筒 2更精確地疋心。然後，該軸3會旋轉而透過該潤滑劑7完 全地與該套筒2分開。 1 員 工 消 費 印 -人。亥固疋軸徑向軸承之構造與操作將參考第6圖 來說明。與第5圖相同，該固定軸徑向轴承亦包含套筒2， 軸3具有動壓力產生溝4 ’及潤滑劑7。該潤滑影係被以毛 、、田作=納持於該套筒2與軸3的軸承面之間的軸承容隙中。 當該固定軸徑向軸承操作時，該套筒2會被―驅動器（ 未示出）所驅轉’而該套筒2在開始旋轉時，會被該動壓力 產生溝4所產生的潤滑劑7之動壓力由該軸3分開。若旋轉 本紙張尺度適用中國巧標準（CNS)A4規格咖χ挪公髮 515872 五、發明說明（2 ) 變快’該潤滑劑7的動壓力亦會增加，故該套筒2會相對於 轴3而更精4地定心。’然後，該套筒2會旋轉而透過潤滑劑 7完全地與該轴3分開。 在旋轉時，於該旋轉軸或固定軸式的流體軸承裝置中 ’該軸3與套筒2皆不會通過潤滑劑7而接觸。該等習知的 動壓力流體軸承裝置，係使用礦物油，人造碳氯化合物油 ’或不導電的人造油，例如酯油，石夕油或氟化碳油等來作 為潤滑劑。 見於可達到更南速度與容量之資訊記錄裝置包括磁 碟裝置等之快速進步，使詩供㈣磁碟的轉軸馬達之流 體軸承裝置的發展亦持續地進步，俾達収快的旋轉並減 少啟動時間。因此，乃發生一種前所未見的技術問題，即 在該流體軸承裝置及磁碟上會有靜電產生。 經濟部智慧財產局員工消費合作社印製 在一流體軸承裝置中之軸或套筒係透過一潤滑劑來旋 轉。由於潤滑劑的運動，靜電會產生於該旋轉構件上。靜 電亦會產生於機械構件中，包括裝在該旋轉構件上的磁碟 會因與空氣摩擦而生靜電。靜電荷的蓄存會與旋轉速度成 比例=加。由於m的流體軸承裝置具有不相接觸的轴 及套筒’並在其間使用不導電原料製成的㈣劑，故靜電 荷會累積於該軸承的旋轉構件，及被固定在繼的磁碟 上，而沒有路徑可供接地釋放。 因=，積存在該軸承之旋轉構件及磁碟上的靜電荷， :持、《地處於種可能被觸發而意外放電造成不稃定之 電狀態的危險下。當發生放電時，將可能導致錯誤的 本紙張尺度咖悄國家標準（CNS)A4規格“ x 297公釐） 515872 A7 B7 五、發明說明（ ，例如錯誤貧料的寫讀，及對該磁碟或磁頭等之實體損害 經濟部智慧財產局員工消費合作社印製 本發明之流體軸承裝置，及使用本發明之流體軸承的 磁碟裝置，乃藉使用導電潤滑劑來充填在該流體軸承裝置 構造中的軸承容隙，而得避免在旋轉構件中產生靜電。該 導電潤滑劑係可使該旋轉構件與固定構件電連接，來防止 靜電荷蓄存在旋轉構件上。 於本發明之流體軸承中，有一設在軸承套筒（套筒）上 的軸承面’透過充填於軸承容隙中的潤滑劑，而相對於一 設在軸承軸（軸）上的軸承面。該套筒或軸至少有一者具有 凹溝可產生動壓力，且該套筒與軸係經由該潤滑劑來電連 接。以此構造，藉著將產生於該軸或㈣上之靜電經由潤 滑劑排除於該套筒或軸，而可防止靜電荷f存於該轴或套 筒上。因此，乃可避免靜電釋放於設在該轴承裝置之機械 構件上，而能以穩定的電結構來達成高速旋轉。 本發明之磁碟裝置乃包含一流體軸承，其中有一設在 該套筒上的軸承面，係透過充填於軸7?1容隙中的潤滑^， 而相對於設在該軸上之-軸承面，且至少該㈣或轴二一 者具有凹溝可產生動壓力。該磁碟係固裝於該流體轴承的 軸或套筒之-者上’且該磁碟係經由潤滑劑電連接於該套 尚與軸。此構造乃可藉將產生於磁碟中如 ” 、脖電，經由該潤 滑劑來釋放於該套筒或軸，而可防止％+^ 、 …I蛘电何。因此，乃 使該磁碟裝置達到穩定的性能，而不合 个曰在该磁碟或磁頭 造成故障。 可中 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱）515872 A7 B7 V. Description of the invention (1) The present invention relates to the field of dynamic fluid bearing devices that are typically used to drive a rotary shaft motor of a magnetic disk in a magnetic disk device, and the use of the fluid 2 bearing device. Disk device. In particular, the present invention relates to a fluid bearing device 'which can prevent static electricity from being accumulated in a rotating member during high-speed rotation. Fig. 5 shows a rotary shaft radial bearing, and Fig. 6 shows a _fixed shaft service direction bearing 'as an example of a dynamic pressure fluid bearing device. First of all, the structure and operation of the rotary shaft radial bearing are as shown in the drawing. The rotary shaft steering bearing includes a bearing sleeve 2 (sleeve 2), and the bearing shaft 3 (shaft 3) has a dynamic pressure generating groove. 4, and tincture 7. The lubricant 7 is held in the bearing clearance between the sleeve 2 and the bearing surface of the shaft 3 by capillary action. When the radial bearing of the rotating shaft is operated, the shaft 3 will be driven by a driver (not ', out) ^ at the beginning of the rotation, the shaft 3 will be lubricated by the dynamic pressure generating groove 4 7 The dynamic pressure is separated by the sleeve 2. If the rotation is faster, the dynamic pressure of the lubricant 7 will also increase, so the shaft 3 will be more accurately centered relative to the sleeve 2. Then, the shaft 3 is rotated and completely separated from the sleeve 2 through the lubricant 7. 1 Staff Consumption India-People. The structure and operation of the Haigu stern shaft radial bearing will be described with reference to FIG. 6. As in FIG. 5, the fixed shaft radial bearing also includes a sleeve 2, and the shaft 3 has a dynamic pressure generating groove 4 ′ and a lubricant 7. The lubricating film is held in the bearing clearance between the sleeve 2 and the bearing surface of the shaft 3 by using the same method. When the fixed shaft radial bearing is operated, the sleeve 2 will be `` driven by a driver (not shown) '' and when the sleeve 2 starts to rotate, it will be lubricated by the dynamic pressure generating groove 4 The dynamic pressure of 7 is divided by the shaft 3. If the size of this paper is adapted to the Chinese standard (CNS) A4 size, coffee is issued 515872 V. Description of the invention (2) becomes faster 'The dynamic pressure of the lubricant 7 will also increase, so the sleeve 2 will be relative to the shaft 3 and more precise 4 centering. 'Then the sleeve 2 will rotate to completely separate from the shaft 3 through the lubricant 7'. During the rotation, neither the shaft 3 nor the sleeve 2 is contacted by the lubricant 7 in the rotating shaft or the fixed shaft type fluid bearing device. These conventional dynamic pressure fluid bearing devices use mineral oil, artificial chlorocarbon oil 'or non-conductive artificial oil such as ester oil, stone oil or fluorocarbon oil as the lubricant. Seeing the rapid progress of information recording devices that can reach more south speed and capacity, including magnetic disk devices, the development of the fluid bearing device of the spindle motor of the poem for magnetic disks has also continued to improve. time. Therefore, an unprecedented technical problem occurs, that is, static electricity is generated on the fluid bearing device and the magnetic disk. Printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs The shaft or sleeve in a fluid bearing device is rotated by a lubricant. Due to the movement of the lubricant, static electricity is generated on the rotating member. Static electricity is also generated in mechanical components, including the magnetic disk mounted on the rotating component, which generates static electricity due to friction with air. The accumulation of electrostatic charge is proportional to the rotation speed = plus. Since the fluid bearing device of m has a shaft and a sleeve that are not in contact with each other and a tincture made of a non-conductive material is used between them, the static charge will accumulate in the rotating member of the bearing and be fixed on the subsequent magnetic disk. , And there is no path for ground release. Because of =, the static charges accumulated on the rotating components of the bearing and the magnetic disk are held, and the ground is in danger of being in an unstable state of electricity which may be triggered and accidentally discharged. When a discharge occurs, it may lead to an error in the national paper standard (CNS) A4 specification of this paper size "x 297 mm" 515872 A7 B7 V. Description of the invention (for example, incorrect writing and reading of poor materials, and the disk Physical damage such as magnetic heads or magnetic heads The employees of the Intellectual Property Bureau of the Ministry of Economy printed the fluid bearing device of the present invention, and the magnetic disk device using the fluid bearing of the present invention was filled in the structure of the fluid bearing device by using a conductive lubricant. The bearing clearance is required to avoid static electricity in the rotating member. The conductive lubricant can electrically connect the rotating member and the fixed member to prevent electrostatic charges from being accumulated on the rotating member. In the fluid bearing of the present invention, there is a The bearing surface provided on the bearing sleeve (sleeve) is opposed to a bearing surface provided on the bearing shaft (shaft) through the lubricant filled in the bearing clearance. At least one of the sleeve or shaft has The groove can generate dynamic pressure, and the sleeve and the shaft system are electrically connected through the lubricant. With this structure, the static electricity generated on the shaft or shaft is eliminated through the lubricant. In the sleeve or shaft, the electrostatic charge f can be prevented from being stored on the shaft or sleeve. Therefore, static electricity can be prevented from being released on the mechanical member provided in the bearing device, and high speed can be achieved with a stable electrical structure. Rotating. The magnetic disk device of the present invention includes a fluid bearing, in which a bearing surface provided on the sleeve is lubricated by filling the gap of the shaft 7.1 with respect to the bearing provided on the shaft. -The bearing surface, and at least one of the shaft or the shaft has a groove to generate dynamic pressure. The magnetic disk is fixed on the shaft or sleeve of the fluid bearing-and the magnetic disk is electrically It is connected to the sleeve and the shaft. This structure can be released in the sleeve or the shaft through the lubricant through the lubricant, such as ", neck electricity, and can prevent% + ^, ... I 蛘 电 何. Therefore, the magnetic disk device achieves stable performance, but does not cause a failure in the magnetic disk or head. However, the Chinese paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love)

(請先閱讀背面之注意事項再填寫本頁) --------^-------- 6 丄:>872(Please read the notes on the back before filling out this page) -------- ^ -------- 6 丄: > 872

五、發明說明（4 經濟部智慧財產局員工消費合作社印製 本發明之流體軸承裝置及磁碟裝置係使用含有靜電荷 防止劑的潤滑劑。在本發明中使用靜電荷防止劑，乃能持 續地賦予該潤滑劑-固定的導電率，而在該軸與套筒之間 確保一穩定的電通路。 亚且，在本發明之流體軸承裝置與磁碟裝置中的靜電 2防止劑，乃含有至少下列之一者：具有氫氧基的有機化 合物；聚醚及其衍生物，酯及其衍生物；唑及其衍生物； 季銨鹽及其衍生物；甜菜鹼；及碳材料。該靜電荷防止劑 係依據該潤滑劑之基礎油的種類來選擇或添加，俾得有效 地呈顯導電性。 圖式之簡單說明·· 第1圖係本發明第一實施例之旋轉軸流體軸承裝置一 關鍵部份的側剖示意圖。 第2圖係本發明第一實施例之固定軸流體軸承裝置一 關鍵部份的側剖示意圖。 第3圖係使用本發明第二實施例之旋轉軸流體軸承裝 置的磁碟裝置之側剖視圖。 第4圖係使用本發明第二實施例之固定軸流體軸承裝 置的磁碟裝置之側剖視圖。 第5圖為習知旋轉軸流體軸承裝置之一關鍵部份的側 剖示意圖。 第6圖為習知固定軸流體軸承裝置之一關鍵部份的側 剖示意圖。 (第一實施例） — — — — — — — — — ·1111111 ^ ---— — — — — — (請先閲讀背面之注意事項再填寫本頁)V. Description of the invention (4 The fluid bearing device and magnetic disk device of the present invention printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs use a lubricant containing an electrostatic charge preventive agent. The use of an electrostatic charge preventive agent in the present invention is sustainable The lubricant is given a fixed electrical conductivity, and a stable electrical path is ensured between the shaft and the sleeve. Moreover, the antistatic agent 2 in the fluid bearing device and magnetic disk device of the present invention contains At least one of the following: organic compounds having a hydroxyl group; polyethers and derivatives thereof, esters and derivatives thereof; azoles and derivatives thereof; quaternary ammonium salts and derivatives thereof; betaines; and carbon materials. The static electricity The charge preventive agent is selected or added according to the type of the base oil of the lubricant, so that it can effectively exhibit electrical conductivity. Brief description of the drawings: Fig. 1 is a rotating shaft fluid bearing device according to the first embodiment of the present invention A schematic cross-sectional side view of a key part. FIG. 2 is a schematic cross-sectional side view of a key part of the fixed shaft fluid bearing device of the first embodiment of the present invention. FIG. 3 is a rotation using the second embodiment of the present invention. Side sectional view of a magnetic disk device of a fluid bearing device. Fig. 4 is a side sectional view of a magnetic disk device using a fixed-shaft fluid bearing device according to a second embodiment of the present invention. Fig. 5 is a key of the conventional rotating shaft fluid bearing device. Partial side sectional diagram. Fig. 6 is a side sectional diagram of a key part of the conventional fixed shaft fluid bearing device. (First embodiment) — — — — — — — — — 1111111 ^ ----- — — — — — (Please read the notes on the back before filling out this page)

515872 A7 B7 五、發明說明（ 經濟部智慧財產局員工消費合作社印製 本發明第-實施例之動壓力流體軸承裝置乃夂考第^ 幻圖來說明。第i圖為-旋轉軸徑向轴承之部份剖視圖。 第2圖為—固定軸徑向軸承之部份剖視圖。 如第1圖所示，該旋轉軸徑向軸承包括一導電轴承套 筒2(套筒2)，㈣軸承軸（軸3)具有一冑壓力產生溝4,及 導電潤滑劑6。該潤滑劑6係被以毛細㈣存納於該套^ 與軸3之間的容隙内。換言之，”—實施例具有與習知 技術相同的構造’惟除使用導電潤滑劑6。該套筒]乃經由 軸承裝置的殼架（未示出）來接地。 當該旋轉軸徑向軸承操作時，有一驅動器（未示出）會 驅動該軸3，該動壓力產生溝4所產生之潤滑劑6的動壓: 會使該軸3由套筒2分開。然後，該軸3與套筒2會透過該潤 滑劑6形成不接觸狀態。但是，由於該潤滑劑6係為導電的 ，故該軸3會恆電連接於該套筒2。 人，有一固疋軸彳空向軸承裝置係參考第2圖來說明 。該固定軸徑向軸承包含該導電套筒2，導電軸3具有動 力產生溝4，及導電潤滑劑6。該軸3係經由該軸承裝置 殼架（未示出）來接地。 當该固定軸徑向軸承操作時，於該套筒2開始旋轉後 ’该動壓力產生溝4所產生之潤滑劑6動壓力會使該套筒2 由軸3分開。然後該套筒2與軸3會透過該潤滑劑6形成不接 觸狀恶。但是’由於該潤滑劑6係為導電的，故該軸3會恆 電連接於該套筒2。 在第一實施例中’該動壓力產生溝4係設在該軸承軸 2 壓 的 (請先閱讀背面之注意事項再填寫本頁) tl--------- 本紙張尺錢財_家標準（CNS)A4_規格（210 X 297公爱了 515872 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明（6 ) 上。然而，該動壓力產生溝4乃可被設在該軸承軸或軸承 套筒上。 於該第一實施例之流體軸承裝置中，如上所述，軸承 面係設在該導電套筒2上，而該導電的軸3係透過裝在軸承 容隙中的潤滑劑來與之相對y且該套筒2與軸3之一者具有 凹溝可產生動壓力。此外，該套筒2與軸3係經由該導電潤 滑劑來電連接。 前述構造乃可使該軸3在該等旋轉軸與固定軸流體軸 承裝置中，經由潤滑劑6永久性地電連接於該套筒2。此將 可使當一旋轉構件如該軸3或套筒2在對一固定構件如該套 同2或軸3旋轉時所產生的靜電電荷輕易地排除。於該第一 貝施例中’在旋轉轴承裝置中之套筒2與在固定軸承裝置 中的軸3，係經由該軸承裝置的殼架來接地。諸如黃銅或 不錄鋼等之金屬乃通常被用作該軸3。而且，假使導電性 由例如真空澱積，金屬電鍍，或熱濺射等表面處理來賦予 | 的話，則如塑膠、陶瓷、或玻璃等絕緣材料亦可被使用。 該潤滑劑6含有一靜電荷防止劑，可對在該潤滑劑6中 的基礎油液提供導電性。該基礎油液並不特別限定，只要 其能滿足在該軸承中產生動壓力所須的黏度即可，即一般 使用者包括礦物油、合成的碳氫化合物油、酯油、矽油及 碳氟化物油等。 靜電荷防止劑含有至少下列成分之―，且係依據基礎 ‘ 錢之義來選擇’以確保能容易溶解或擴散於基礎油液 卜並使該基礎油液不會有反應、’諸如分解或聚合等：具 本紙張尺度"ϋ时關家標準（cfs)A4規格（21G x 297 -------------裝--------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 9 515872 A7515872 A7 B7 V. Description of the invention (The employee-cooperative cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed the dynamic pressure fluid bearing device of the first embodiment of the present invention based on the ^ magic diagram to illustrate. The i-picture is the rotating shaft radial bearing Partial sectional view. Figure 2 is a partial sectional view of a fixed shaft radial bearing. As shown in Figure 1, the rotary shaft radial bearing includes a conductive bearing sleeve 2 (sleeve 2), a ㈣bearing shaft ( The shaft 3) has a pressure generating groove 4, and a conductive lubricant 6. The lubricant 6 is stored in the gap between the sleeve ^ and the shaft 3 with a capillary 。. In other words, the embodiment has an The same construction of the conventional technique 'except the use of a conductive lubricant 6. The sleeve] is grounded via the housing (not shown) of the bearing device. When the rotary shaft radial bearing is operated, there is a driver (not shown) ) Will drive the shaft 3, the dynamic pressure generates the dynamic pressure of the lubricant 6 generated by the groove 4: will cause the shaft 3 to be separated by the sleeve 2. Then, the shaft 3 and the sleeve 2 will be formed through the lubricant 6 Non-contact state. However, since the lubricant 6 is conductive, the shaft 3 is constantly connected. In the sleeve 2. A fixed bearing shaft bearing is described with reference to Figure 2. The fixed shaft radial bearing includes the conductive sleeve 2, the conductive shaft 3 has a power generating groove 4, and conductive lubrication. Agent 6. The shaft 3 is grounded via the bearing device housing (not shown). When the fixed shaft radial bearing is operating, after the sleeve 2 starts to rotate, the lubrication generated by the dynamic pressure generating groove 4 The dynamic pressure of the agent 6 will cause the sleeve 2 to be separated by the shaft 3. Then the sleeve 2 and the shaft 3 will pass through the lubricant 6 to form a non-contact evil. But 'because the lubricant 6 is conductive, the shaft 3 will be permanently connected to the sleeve 2. In the first embodiment, 'the dynamic pressure generating groove 4 is provided on the bearing shaft 2 (please read the precautions on the back before filling this page) tl --- ------ This paper rule money_Home Standard (CNS) A4_ specifications (210 X 297 public love 515872 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7. V. Invention Description (6). However, this The dynamic pressure generating groove 4 can be provided on the bearing shaft or bearing sleeve. The fluid bearing assembly of the first embodiment As mentioned above, the bearing surface is provided on the conductive sleeve 2, and the conductive shaft 3 is opposed to it through a lubricant installed in the bearing clearance, and the sleeve 2 and one of the shaft 3 are opposite to each other. The groove 2 can generate dynamic pressure. In addition, the sleeve 2 and the shaft 3 are electrically connected via the conductive lubricant. The aforementioned structure enables the shaft 3 to be lubricated in the fluid bearing device of the rotating shaft and the fixed shaft through lubrication. Agent 6 is permanently and electrically connected to the sleeve 2. This will enable the electrostatic charge generated when a rotating member such as the shaft 3 or the sleeve 2 is rotated against a fixed member such as the sleeve 2 or the shaft 3. In the first embodiment, the sleeve 2 in the rotary bearing device and the shaft 3 in the fixed bearing device are grounded via the housing of the bearing device. Metals such as brass or non-steel steel are usually used as the shaft 3. Moreover, if conductivity is imparted by surface treatment such as vacuum deposition, metal plating, or thermal sputtering, insulating materials such as plastic, ceramics, or glass can also be used. The lubricant 6 contains an electrostatic charge preventive agent which can provide conductivity to the base oil in the lubricant 6. The base oil is not particularly limited as long as it can meet the viscosity required to generate dynamic pressure in the bearing, that is, general users include mineral oil, synthetic hydrocarbon oil, ester oil, silicone oil, and fluorocarbon Oil, etc. The electrostatic charge preventive agent contains at least the following components and is selected according to the basis of "the meaning of money" to ensure that it can be easily dissolved or diffused in the base oil and that the base oil does not react, such as decomposition or polymerization Etc .: This paper has a standard " ϋ 家 关 standard (cfs) A4 specification (21G x 297 ------------- installation -------- order ----- ---- Line (Please read the notes on the back before filling this page) 9 515872 A7

訂 aOrder a

515872515872

五、發明說明（ 經濟部智慧財產局員工消費合作社印製 作接觸該等磁碟13的間隔物12與套夹u ，之間形成電連接。該咖通常係由&或二: 衣成，並與壓裝其中的軸3具有相同電性。因此，該等磁 碟13乃可經由潤滑劑電連接於套筒2。 然後，其中設有固定軸流體軸承裝置之磁碟裝置將說 明如下。於第4圖中，該導電軸3的一端係固定於接地的底 座1上。有一止推軸承5固設於該軸3的另一端。該等磁碟13 其間設有間隙物12而疊裝於該軸轂10上，並以該套夾“固 疋。該導電的軸承套筒2乃被壓裝於該軸轂1〇的内徑中。 該轉子磁鐵9係被設在軸轂10的内徑外緣，並有一馬達具 有該定子線圈8垂直於該底座丨。該馬達會以高速驅動旋轉 構件，包括該磁碟13及軸轂1 〇等。該導電潤滑劑會充佔於 設在該軸3上的止推軸承5與套筒2之間的止推容隙丨5，及 該軸3與套筒2之間的徑向容隙14中，因此旋轉所產生的動 壓力將會使該套2懸浮。在上述構造中，一導電材料例如 金屬或導電樹脂會被用作接觸磁碟13的間隔物12及套失u 等，而於該等磁碟13與軸轂1〇之間形成電連接。該軸轂1〇 通常係由鋁或鐵系金屬製成，並與壓裝的套筒2具有相同 電位。因此’該等磁碟13乃可經由潤滑劑電連接於軸3。 藉以上之構造’該等磁碟13及套筒或軸3係可透過在 該磁碟驅動器中之潤滑劑來電連接，而該磁碟驅動器中係 可設有旋轉軸或固定軸式的流體軸承裝置。因此，當旋轉 時任何可能產生於磁碟13上的靜電荷，皆可被安全地釋放 至該底座1。 I ^--------^---------^ (請先閱讀背面之注意事項再填寫本頁)V. Description of the Invention (The consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints and produces spacers 12 contacting the magnetic disks 13 and the sleeve clamp u to form an electrical connection. The coffee is usually made of & or two: clothing, and It has the same electrical properties as the press-fitted shaft 3. Therefore, the magnetic disks 13 can be electrically connected to the sleeve 2 through a lubricant. Then, a magnetic disk device provided with a fixed shaft fluid bearing device will be described below. In Figure 4, one end of the conductive shaft 3 is fixed to the grounded base 1. A thrust bearing 5 is fixed to the other end of the shaft 3. The magnetic disks 13 are provided with a gap 12 therebetween and stacked on The shaft hub 10 is fixed with the collet. The conductive bearing sleeve 2 is press-fitted into the inner diameter of the shaft hub 10. The rotor magnet 9 is provided inside the shaft hub 10. And a motor with the stator coil 8 perpendicular to the base. The motor will drive rotating components at high speed, including the magnetic disk 13 and the hub 100. The conductive lubricant will be filled in the Thrust tolerance between the thrust bearing 5 on the shaft 3 and the sleeve 2 and the distance between the shaft 3 and the sleeve 2 Into the gap 14, so the dynamic pressure generated by the rotation will suspend the sleeve 2. In the above-mentioned configuration, a conductive material such as metal or conductive resin will be used as the spacer 12 contacting the magnetic disk 13 and the sleeve loss u And so on, and an electrical connection is formed between the magnetic disks 13 and the hub 10. The hub 10 is usually made of aluminum or iron-based metal and has the same potential as the press-fitted sleeve 2. Therefore, ' The magnetic disks 13 can be electrically connected to the shaft 3 through a lubricant. By the above configuration, the magnetic disks 13 and the sleeve or the shaft 3 can be connected by electricity through the lubricant in the magnetic disk drive. The disk drive can be equipped with a rotating shaft or a fixed shaft fluid bearing device. Therefore, any electrostatic charge that may be generated on the magnetic disk 13 when it is rotated can be safely released to the base 1. I ^- ------ ^ --------- ^ (Please read the notes on the back before filling this page)

515872515872

(產業上之可利用性） 五、發明說明（9 本發明之流體軸承裝置係經由一含有靜電荷防止劑之 $私潤滑劑.來電連接該套筒與軸。此將可避免靜電荷蓄存 於旋轉構件上，包括該套筒與軸。因此，使用本發明之流 體轴承裝置的器具將可呈顯穩定的性能，而不會因釋¥靜 電而造成操作的失誤或故障。 元件標號對照 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 卜··底座 2…套筒 3…軸 4···動壓力產生溝 5···止推軸承 6,7···潤滑劑 8···定子線圈 9…轉子磁鐵 10…軸轂 11…套夾 12…間隔物 13…磁碟 14…徑向容隙 15…止推容隙 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 12(Industrial availability) V. Description of the invention (9) The fluid bearing device of the present invention is connected to the sleeve and the shaft via a private lubricant containing an electrostatic charge preventive agent. This will prevent the accumulation of electrostatic charges. The rotating member includes the sleeve and the shaft. Therefore, the apparatus using the fluid bearing device of the present invention can show stable performance without causing operation errors or failures due to the discharge of static electricity. Component reference comparison ( Please read the precautions on the back before filling in this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ·· Base 2 ... Sleeve 3 ... Shaft 4 ·· Dynamic pressure generating groove 5 ·· Thrust bearing 6, 7 ... Lubricant 8 ... Stator coil 9 ... Rotor magnet 10 ... Hub 11 ... Collet 12 ... Spacer 13 ... Disk 14 ... Radial clearance 15 ... Thrust clearance This paper is applicable to China Standard (CNS) A4 size (210 X 297 mm) 12

Claims (1)

經濟部智慧財產局員工消費合作社印制衣 M5872 六、申請專利範圍 1· 一種軸承裝置，包含： 一導電軸承套筒； ‘私軸承軸透過一容隙設在一相對於該軸承套 罔的位置；及 , 潤⑺剤充填於該軸承套筒與軸承軸之間的容隙中 ，該潤滑劑具有導電性。 2. -種流體軸承裝置，其中設有—轴承套筒上之轴承面 ，乃透過充填在一軸承容隙中之潤滑劑，而相對於設 在一軸承軸上的軸承面，且至少該軸承套筒的軸承面 或該軸承軸的軸承面之一者具有凹溝可產生動壓力； 其中忒軸承套筒與該軸承軸係經由該具有導電性的潤 滑劑來電連接。 3. 如申請專利範圍第2項之流體轴承裝置，其中該潤滑劑 含有一靜電何防止劑。 4·如申請專利範圍第3項之流體軸承裝置，其中該靜電荷 防劑包含至少下列之一者：具有氫氧基的有機化合物 •’聚醚及其衍生物；酯及其衍生物；唑及其衍生物； 季銨鹽及其衍生物；甜菜鹼；及碳材料。 5· —種磁碟裝置，包含： 一導電軸承套筒； 一導電軸承軸透過一容隙設在一相對於該軸承套 筒的位置； 潤滑劑充填於該軸承套筒與軸承轴之間的容隙中 ，及 本紙張尺度用中國國家標準（CNS)A4規格（21〇)<297公釐） —------ -13 - ------;丨·1·------------訂---------線 (請先閱讀臂面之注意事項再填寫本頁) 515872 A8 B8 C8 D8 經濟部智慧財產局員工消費合作社印制衣 六、申請專利範圍 一磁碟； 其中該潤滑劑具有導電性，且該磁碟係被固設成 電接觸於該軸承軸或軸承套筒之一者。 6. —種磁碟裝置，包含： -流體軸承裝置，其中設在—軸承套筒上之轴承 面，乃透過充填在-軸承容隙中之導電潤滑劑，而相 對於設在-轴承軸上的轴承面，且至少該轴承套筒的 轴承面或該軸承軸的轴承面之一者具有凹溝可產生動 壓力；及 —㈣^於該流體軸承裝置之軸承軸或軸7 套筒之一者上； 其中該磁碟係經由該潤滑劑電連接於該軸承軸！ 軸承套筒。 7.如申請專利範圍第6項之磁碟裝置，其中該潤滑劑含1 一靜電荷防止劑。 8·如申請專利範圍第7項之磁碟裝置，其中該靜電防止負 包含至少下列之-者··具有氫氧基的有機化合物；^ 驗及其衍生物，_及其衍生物；唾及其衍生物；季金 鹽及其衍生物；甜菜驗；及碳材料。 — — — — — — — — — — — — — 1111111 ^ ·1111111· (請先閱讀-f面之注意事項再填寫本頁)Printed clothing M5872 by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 6. Scope of patent application 1. A bearing device includes: a conductive bearing sleeve; 'the private bearing shaft is arranged at a position relative to the bearing sleeve through a gap; ; And, the lubricant is filled in a gap between the bearing sleeve and the bearing shaft, and the lubricant is conductive. 2. A fluid bearing device, wherein a bearing surface on a bearing sleeve is provided through a lubricant filled in a bearing clearance, and relative to a bearing surface provided on a bearing shaft, and at least the bearing One of the bearing surface of the sleeve or the bearing surface of the bearing shaft has a groove to generate dynamic pressure; wherein the 忒 bearing sleeve and the bearing shaft are electrically connected via the conductive lubricant. 3. The fluid bearing device according to item 2 of the patent application, wherein the lubricant contains an antistatic agent. 4. The fluid bearing device according to item 3 of the application, wherein the electrostatic charge preventive agent includes at least one of the following: organic compounds having a hydroxyl group • 'polyethers and derivatives thereof; esters and derivatives thereof; and azoles And their derivatives; quaternary ammonium salts and their derivatives; betaines; and carbon materials. 5 · A magnetic disk device, comprising: a conductive bearing sleeve; a conductive bearing shaft disposed at a position relative to the bearing sleeve through a gap; a lubricant filled between the bearing sleeve and the bearing shaft In the tolerance, and this paper size, the Chinese National Standard (CNS) A4 specification (21〇) < 297 mm) ------- -13-------; 丨 · 1 ·- ---------- Order --------- Line (Please read the precautions on the arm surface before filling out this page) 515872 A8 B8 C8 D8 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Clothing 6. The scope of patent application is a magnetic disk; wherein the lubricant is conductive, and the magnetic disk is fixed to be in electrical contact with one of the bearing shaft or bearing sleeve. 6. —A magnetic disk device, comprising:-a fluid bearing device, wherein the bearing surface provided on the-bearing sleeve is passed through the conductive lubricant filled in the-bearing clearance, and is relative to the-bearing shaft Bearing surface, and at least one of the bearing surface of the bearing sleeve or the bearing surface of the bearing shaft has a groove to generate dynamic pressure; and-one of the bearing shaft or shaft 7 sleeve of the fluid bearing device The magnetic disk is electrically connected to the bearing shaft via the lubricant! Bearing sleeve. 7. The magnetic disk device according to item 6 of the patent application, wherein the lubricant contains an electrostatic charge preventive agent. 8. The magnetic disk device according to item 7 of the scope of patent application, wherein the static electricity prevention negative contains at least one of the following: an organic compound having a hydroxyl group; ^ and its derivatives, _ and its derivatives; saliva and Its derivatives; quaternary gold salts and their derivatives; beet test; and carbon materials. — — — — — — — — — — — — — 1111111 ^ · 1111111 · (Please read the precautions on -f before filling out this page) 1414