| 摘要 |
A dynamic fluid bearing for a spindle motor is disclosed, which provides a fluid bearing seal and support structure that simultaneously addresses the problems of preventing oil leakage, of maintaining the bearing integrity under shock, of reducing oil evaporation and of minimizing distortion of the active bearing surface. The bearing structure includes a thrust plate coupled to a shaft 480 and a bearing plate 214 and load plate 240 coupled to a sleeve 430, wherein the load plate urges the bearing plate towards the thrust plate, and wherein an adhesive 250 is interposed between the load plate and the thrust plate. The adhesive may be an UV epoxy. The sleeve is operatively coupled to a stator 494, 498, and the stator rotates the sleeve upon receiving a drive signal. The bearing further includes a diffusion barrier 270 disposed between the sleeve and the stator. A second diffusion barrier 260 is disposed between the load plate and the shaft. The bearing structure may also include an O-ring 222 disposed above the bearing plate for sealing a gap between the bearing plate and the sleeve. <IMAGE>
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