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This article describes alignment tabs for aligning a personal computer (PC) front/top cover assembly to the eject button of a diskette drive which has already been installed in the base assembly of the PC.
English (United States)
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Personal Computer Cover Alignment Tabs
This article describes alignment tabs for aligning a personal computer (PC)
front/top cover assembly to the eject button of a diskette drive which has already
been installed in the base assembly of the PC.
Typical alignment techniques are not able to compensate for the tolerance
accumulations in the base, support structure, drive and cover assemblies, plus
the horizontal "float" of the drive/slide assembly to the support structure.
Preliminary alignment is provided by side channel/guide rails which run from
front to rear on the cover assembly and in the base (not shown). This brings the
cover assembly into a known range in relation to the base prior to the final
alignment provided by the alignment tabs disclosed herein.
Drive bezels are typically attached to the face of the diskette drive in order to
maintain the necessary alignment between them for the diskette slot, the light-
emitting diode (LED), and a diskette eject button. This PC design is such that the
drive and/or blank bezel(s) can be attached to the front cover. This provides
maximum flexibility for use of the drive positions available and for ease of
serviceability. As a result, misalignment must be reconciled. A two-stage design
is disclosed herein to achieve the alignment required. It has been incorporated
into the drive bezel itself.
Referring to the drawing which shows the drive bezel and drive in
perspective, two course alignment tabs 1 are added to the drive side of the
molded drive bezel. The tabs 1 extend out towards the drive for a distance
greater than the distance which the drive eject button 2 extends ou...