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Disk drive with composite sheet metal and encapsulated plastic base

  • US 6,034,841 A
  • Filed: 05/29/1998
  • Issued: 03/07/2000
  • Est. Priority Date: 05/29/1998
  • Status: Expired due to Term
First Claim
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1. A magnetic recording disk drive comprising:

  • a base comprising a generally planar metal plate having an outer perimeter and a flange extending at an angle from the plane of the plate around at least a portion of the plate perimeter, and a plastic frame encapsulating the flange and surrounding the perimeter of the metal plate, the plastic frame having perimeter walls oriented generally perpendicularly to the plate with the plastic of the frame being incorporated into the holes of the flange to provide mechanical interlocking of the plastic frame to the metal plate;

    a spindle motor attached to a first side of the metal plate;

    a magnetic recording disk attached to and rotatable by the spindle motor;

    a voice coil motor actuator attached to said first side of the metal plate;

    a head attached to and movable by the actuator for reading or writing data on the disk;

    an electronics card attached to the other side of the metal plate;

    a top cover attached to the plastic frame for covering the spindle motor and actuator; and

    a bottom cover attached to the plastic frame for covering the electronics card.

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