Disk drive device

Details Disk drive device Disk drive device

2011-01-18

2011-01-18

Cao, Allen T (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

07872836

ABSTRACT:
In a disk drive device in which low-density gas is sealed, embodiments of the present invention help to improve joint reliability at a solder joint section between a feedthrough and an enclosure with respect to stress applied by deformation due to changes in temperature environment in use. According to one embodiment, helium gas is sealed in an interior space of an HDD. A feedthrough is solder jointed to a feedthrough mounting surface of a base. At a part with relatively large thermal stress, a width of the feedthrough mounting surface is increased, and at a part with relatively small thermal stress, a width of the feedthrough mounting surface is decreased. This prevents a crack penetrating path from being generated at the solder joint section due to the thermal stress and prevents the solder joint section from contacting pins.

REFERENCES:
patent: 7062387 (2006-06-01), Burns et al.
patent: 7773338 (2010-08-01), Hayakawa et al.
patent: 2005/0068666 (2005-03-01), Albrecht et al.
patent: 2008/0007866 (2008-01-01), Hayakawa et al.
patent: 2008/0310048 (2008-12-01), Hirono et al.
patent: 2003-133337 (2003-05-01), None

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