Magnetic disk device with wind shield members

1. A magnetic disk device comprising:

magnetic disks;

magnetic head arms providing access to the magnetic disks; and

wind shield members each arranged above or below said magnetic disks in a region adjacent to and on the rotationally upstream side of said magnetic head arms for restricting the impact of an air flow generated by the rotation of the magnetic disks against the magnetic head arms, said wind shield members having an entrance edge and an exit edge, said exit edge being downstream of said entrance edge in a rotational direction of said air flow,

wherein said entrance edge has a curved guide surface, looking perpendicular to surfaces of said magnetic disks, for guiding the generated air flow to the outside of the magnetic disks, and

wherein said entrance edge is concavely curved and is not parallel to said exit edge, which is convexly curved.

2. A magnetic disk device according to claim 1 , wherein said wind shield members have a cross-sectional shape which becomes progressively smaller toward an edge thereof on the rotational exit side.

3. A magnetic disk device according to claim 1 , wherein said wind shield members have surface portions arranged opposed to, and in proximity with, upper and lower surfaces of said magnetic disks, whereby the generated air flow is introduced between said surface portions and the magnetic disks thereby to prevent the magnetic disks from being displaced in the direction of the thickness thereof.

4. A magnetic disk device comprising:

magnetic disks;

magnetic head arms providing access to the magnetic disks; and

wind shield members each arranged above or below said magnetic disks in a region adjacent to and on the rotationally upstream side of said magnetic head arms for restricting the impact of an air flow generated by the rotation of the magnetic disks against the magnetic head arms, said wind shield members having an entrance edge and an exit edge, said exit edge being downstream of said entrance edge in a rotational direction of said air flow,

wherein said entrance edge has a curved guide surface looking perpendicular to surfaces of said magnetic disks, for guiding the generated air flow to the outside of the magnetic disks,

wherein said entrance edge is not parallel to said exit edge, and

wherein said wind shield members are formed in a wind shield block, said wind shield block having a support post and said wind shield members transversely extending from said support post, said support post having a curved surrounding surface concentric with said magnetic disks and surrounding an outer periphery of the magnetic disks with a small gap therebetween.

5. A magnetic disk device comprising:

magnetic disks;

magnetic head arms providing access to the magnetic disks; and

wind shield members each arranged above or below said magnetic disks in a region adjacent to and on the rotationally upstream side of said magnetic head arms for restricting the impact of an air flow generated by the rotation of the magnetic disks against the magnetic head arms;

wherein said wind shield members are formed in a wind shield block, said wind shield block having a support post and said wind shield members transversely extending from said support post, said support post having a curved surrounding surface concentric with said magnetic disks and surrounding an outer periphery of the magnetic disks with a small gap therebetween.

6. A magnetic disk device according to claim 5 , wherein said wind shield members have a cross-sectional shape which becomes progressively smaller toward an edge thereof on the rotationally exit side.

7. A magnetic disk device comprising:

magnetic disks;

magnetic head arms providing access to the magnetic disks; and

wind shield members each arranged above or below said magnetic disks in a region adjacent to and on the rotationally upstream side of said magnetic head arms for restricting the impact of an air flow generated by the rotation of the magnetic disks against the magnetic head arms;

wherein said wind shield members have surface portions arranged opposed to, and in proximity with, upper and lower surfaces of said magnetic disks, whereby the generated air flow is introduced between said surface portions and the magnetic disks thereby to prevent the magnetic disks from being displaced in the direction of the thickness thereof, and

wherein the surface portion of the wind shielding member has an inner side facing the center of the disks, said inner side having a dimension greater than a dimension which is radially measured between the inner side and the outer periphery of the disks.

8. A magnetic disk device according to claim 7 , wherein said wind shield members have a cross-sectional shape which becomes progressively smaller toward an edge thereof on the rotationally exit side.