Shield for electronic device

Details Shield for electronic device Shield for electronic device

1999-04-14

2001-01-30

Gandhi, Jayprakash N. (Department: 2841)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S818000, C361S801000, C361S802000, C361S800000, C361S741000

Reexamination Certificate

active

06181575

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 securely retains a circuit board to be protected thereon.
2. The Prior Art
Electrical shields are usually mounted inside an electronic device, such as a computer, to shield and protect a circuit board of the electronic device from external electromagnetic interference.
FIG. 4
of the attached drawings shows a conventional shield designated by reference numeral
4
. The shield
4
comprises a panel having flanges
41
for fitting in corresponding openings defined in the casing of the electronic device thereby securing the shield
4
in the casing. The shield
4
has two board support arms
42
extending from opposite sides thereof. Each board support arm
42
has an elongate slot
43
for receiving and retaining an extension
50
of a circuit board
5
therein. However, the size (width) of the slot
43
has to be precisely dimensioned to ensure a proper fit with the corresponding extension
50
. If the slot
43
is too wide, the circuit board
5
cannot be securely retained, while a slot
43
that is too narrow hinders insertion of the extension
50
into the slot
43
.
It is thus desirable to have a shield that overcomes the problems of the prior art.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a shield including a board support arm defining an elongate slot with an expanded end for facilitating insertion of the circuit board into the slot, improving retention of the circuit board, and expediting removal of the circuit board.
To achieve the above objects, a shield in accordance with the present invention comprises a shielding panel having two board support arms extending from opposite sides thereof. Each board support arm defines an elongate slot therein extending in a direction substantially normal to the panel from a remote end to a proximal end. An expanded hole is defined in the board support arm at the remote end of the slot and communicates with the slot by means of a converging section whereby a mounting extension of a circuit board of the electronic device is received in the slot by being inserted in the expanded hole and guided by the converging section into the slot toward the proximal end thereof. The expanded hole facilitates the insertion of the mounting extension into the slot thus the width of the slot may be dimensioned to securely retain the circuit board without interfering with the insertion of the circuit board. The expanded hole also facilitates removal of the circuit board from the slot.


REFERENCES:
patent: 4964017 (1990-10-01), Jindrick et al.
patent: 5600538 (1997-02-01), Xanthopoulos

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