Browse Prior Art Database

Battery Pop-up Spring for Notebook PC

IP.com Disclosure Number: IPCOM000123366D
Original Publication Date: 1998-Oct-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Horiuchi, M: AUTHOR

Abstract

Disclosed is a battery pop-up mechanism, simple in design, saving space and reducing cost, for a notebook type Personal Computer (PC).

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This is the abbreviated version, containing approximately 97% of the total text.

Battery Pop-up Spring for Notebook PC

   Disclosed is a battery pop-up mechanism, simple in design,
saving space and reducing cost, for a notebook type Personal
Computer (PC).

   Figures 1 to 3 display the design concept of how the pop-up
mechanism (a simple spring) aids the user in removing the battery
from the PC.

   Figure 4 exhibits an enlarged profile of the spring used
to pop-up the battery.  At first sight, this spring would seem to
exhibit a complex form.  However, the spring is very thin, only 1 mm
or less, making its design essentially 2-D.  This allows it to be
easily manufactured from flat spring steel, phosphor bronze, or other
steel plate materials using a stamping press(Figure 5).

   In Figure 4, the arrows represent the direction in which
the spring moves during operation.  This motion is constrained to
the same plane as the profile of the spring, and does not project
into 3-D space,  thereby minimizing the overall space required by
the spring and its actuation.  Generally, coil springs or rubber
springs have volume, and require all three dimensions to function
properly.  Flat plate springs can almost be considered 2-D, but
these springs often have out of plane motion, therefore requiring
additional space during actuation.  On the other hand, the spring
exhibited in Figure 4 only requires a gap large enough to
accommodate its thickness to properly function.  This allows it to
easily fit between the inner sidewall of the base cover and the
int...