Shield for electronic device

Details Shield for electronic device Shield for electronic device

1999-04-14

2001-08-21

Gandhi, Jayprakash N. (Department: 2841)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S800000, C361S816000, C361S801000, C361S802000, C361S740000, C361S741000, C361S756000, C361S759000

Reexamination Certificate

active

06278617

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to an electrical shield for protecting an electronic device from electromagnetic interference, and in particular to a shield that is securely retained in an electronic device.
2. The Prior Art
Electrical shields are commonly mounted inside an electronic device, such as a computer, for shielding and protecting a circuit board of the electronic device from external electromagnetic interference.
FIG. 7
of the attached drawings shows a conventional shield designated by reference numeral
5
. The shield
5
comprises a panel having outward flanges
51
for fitting in an opening defined in a casing of an electronic device thereby securing the shield
5
in the casing. The shield
5
has openings
52
for accommodating connectors mounted on a circuit board of the electronic device.
Since the shield
5
is only retained in the opening of the casing by means of engagement between the flanges
51
and the opening, the shield
5
may not be securely fixed to the casing. Furthermore, a gap exists between the shield
5
and the opening of the casing. Thus, the engagement between the shield and the opening is further weakened.
It is thus desirable to have a shield that overcomes the problem of the prior art.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a shield comprising retaining tongues extending through and retained in a gap defined in a casing of an electronic device thereby securely retaining the shield in the casing.
To achieve the above object, a shield in accordance with the present invention comprises a shielding panel dimensioned to be received in an opening defined in a casing of an electronic device for protecting the electronic device from electromagnetic interference. The shielding panel has outward flanges contacting support flanges extending from a periphery of the opening of the casing for retaining the shield in the opening. The outward flanges of the shielding panel form at least one retaining tongue extending therefrom and receivable in a gap defined in the support flanges of the casing for securely retaining the shield in the opening.


REFERENCES:
patent: 5640309 (1997-06-01), Carney et al.
patent: 5856632 (1999-01-01), Bostrom et al.
patent: 5959244 (1999-09-01), Mayer

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