Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Utility Patent
1999-03-31
2001-01-02
Picard, Leo P. (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S753000, C361S796000, C307S150000
Utility Patent
active
06169661
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to a spare power supply structure for computers, more particularly to a spare power supply structure that enables optimum use of the unit usable space of the power supply while ensuring that the power supply appears nice and even on a front face of a casing.
(b) Description of the Prior Art
In general, computers are provided with power supplies to supply them with the necessary direct currents. Usually, a computer has only a single power supply. However, if the power supply cannot function during operation of the computer so that it cannot supply the computer with electric power, computer system failure or loss of files may result. Manufacturers have therefore developed a spare power supply device to provide the necessary electric power when the main power supply fails. The principle adopted is substantially the same as the juxtaposition of hard disks in a computer. Such spare power supplies are quite popular now.
As mentioned above, the power supplies in a computer are connected in juxtaposition. Both power supplies are disposed in the same casing. When one of them fails, the other one will continue to supply power to the computer to prevent system failure or loss of files, as shown in FIG.
1
.
Conventional spare power supplies are configured to be removable like a drawer so that it is not necessary to shut down the computer during on-line operation failure and supply of power will not be interrupted. However, in order to positively secure each power supply
1
, manufacturers have to choose between appearance and use of space in the installation of conventional spare power supplies. Referring to
FIG. 4
, in order to ensure that the front face of the spare power supply
1
appears to flush with the front face of a casing
2
, one side of the power supply
1
is recessed to leave a space to circumvent a screw positioning seat
21
on the casing
2
and to enable the power supply
1
to slide along a slide track means into the casing
2
. Screws are then used to secure the power supply
1
inside the casing
2
. Although the power supply
1
in the casing
2
appears flat and even, the unit usable space of the power supply
1
is relatively reduced. Referring to
FIG. 5
, in order to make the best use of the unit usable space of the power supply
1
, the power supply
1
has to be provided with an extension securing plate
11
extending from one side of its front face. This will sacrifice the appearance of the power supply
1
in the casing
2
.
It is therefore desirable to have a spare power supply that can eliminate the above-mentioned problems of the prior art.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a computer spare power supply structure that enables optimum use of the unit usable space of a power supply while ensuring that the power supply appears nice and even on a front face of a casing.
According to the present invention, the computer spare power supply structure includes a power supply and a casing. One corner of the casing is provided with a retaining threaded seat. One corner edge of the power supply is provided with a longitudinal recess that can circumvent the retaining threaded seat when being inserted into the casing.
REFERENCES:
patent: 4122508 (1978-10-01), Rumbaugh
patent: 5121296 (1992-06-01), Hsu
patent: 6002586 (1999-12-01), Chen et al.
Dougherty & Troxell
Duong Hung Van
Picard Leo P.
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