| 摘要 |
<p>A disk storage device, comprising in combination:
a housing having walls (10) enclosing a clean room chamber (CR);
at least one data storage disk (30) located in said clean room chamber (CR);
transducer means (32) positioned to cooperate with a surface on said data storage disk (30) to read data recorded thereon;
a motor for rotating said data storage disk (30), said motor including a hub (14) for receiving said data storage disk (30), a shaft (16) attached to said hub (14) for rotation therewith, a bearing system for rotatably supporting said shaft (16) and hub (14), a rotor (17) having a cylindrical surface and fixed to said shaft (16) at an end thereof opposite said hub (14), an annular permanent magnet (18) mounted on the cylindrical surface of said rotor (17), and a stator (28) including a winding (29), said stator (28) being affixed to a wall (10) of said housing and surrounding said annular permanent magnet (18) so as to be spaced therefrom by a cylindrically-shaped air gap (18), whereby magnetic flux generated by said stator (28) interacts with said permanent magnet (18) to apply a rotary driving force to said rotor (17), shaft (16) and hub (14); and sealing means for retarding a transfer of contaminants into said clean-room chamber (CR), whereby said sealing means comprise a labyrinth seal between an underside of the hub (14) and an upper end of the housing walls (10).
A ferromagnetic shield can be located between the stator (28) and an adjacent section of said wall (10) of the housing.</p> |
