Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2000-06-23
2002-09-24
Cuneo, Kamand (Department: 2827)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S800000, C361S818000, C361S807000, C174S034000, C174S13800J
Reexamination Certificate
active
06456506
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a retainer for preventing electromagnetic interference and capable of being absorbed mechanically, and especially to a retainer which can be installed on a circuit board for achieving a preferred shielding effect. The retainer can be absorbed by a robotic arm so that material-taking and assembly of the retainer is performed automatically.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, a prior art circuit board
10
a
can be fixed in the casing of an electronic device by a screw
11
a
. The circuit board
10
a
is formed with a fixing hole
12
a
. At the top of the circuit board
10
a
the outer rim of the fixing hole
12
a
is installed with a tin ring
13
a
. The screw
11
a
can pass through each fixing hole
12
a
and then the screw
11
a
is screwed into the casing so that the circuit board
10
a
is firmly secured to the casing by the screw
11
a
. By the contact of the screw
11
with the tin ring
13
a
, the circuit board
10
a
may be electrically grounded through the tin ring
13
a
, screw
11
a
, and the casing for achieving the object of preventing electromagnetic interference so as to achieve a preferred shielding effect. Moreover, by the tin ring
13
a
, as the screw
11
a
is locked, damage to the circuit board
10
a
will be prevented.
However, as the aforesaid prior art screw
11
a
is rotated for fixing, it will contact with and rub the tin ring
13
a
so as to destroy the tin ring and thus cause the tin ring to drop off. Therefore, the circuit board
10
a
can not be substantially electrically grounded through the tin ring
13
a
, screw
11
a
and casing. Therefore, the shielding effect is bad.
Accordingly, there is an eager demand for a novel electronic retainer for preventing electromagnetic interference and capable of being absorbed mechanically which can improve the defects of the prior art.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to provide a retainer for preventing electromagnetic interference and capable of being absorbed mechanically, which can be installed on the circuit board. As the screw is rotated for fixing, it will not contact with and rub the tin ring on the circuit board. Therefore, the tin ring will not be destroyed or drop out. Thus, a perfect shielding effect is achieved.
Another object of the present invention is to provide an electronic retainer for preventing electromagnetic interference and capable of being absorbed mechanically. Therefore, the retainer can be absorbed by a robotic arm so that material-taking and assembly of the retainer is performed automatically. Thus, the manufacturing process is rapid and mass production can be achieved.
In order to achieve the aforesaid object, the present invention provides an electronic retainer for preventing electromagnetic interference and capable of being absorbed mechanically. The retainer has a through hole therein, and a temperature tolerant rubber piece is matched in the through hole.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when reading in conjunction with the appended drawing.
REFERENCES:
patent: 3574312 (1971-04-01), Miller
patent: 3661291 (1972-05-01), Hetzer
patent: 3666301 (1972-05-01), Jorn
patent: 3814135 (1974-06-01), Hetzer et al.
patent: 4179038 (1979-12-01), Rosan, Jr.
patent: 4620641 (1986-11-01), Beer
patent: 4726722 (1988-02-01), Wollar
patent: 5048181 (1991-09-01), Grider
patent: 5519169 (1996-05-01), Garrett et al.
patent: 5750936 (1998-05-01), Wheatly et al.
patent: 5926357 (1999-07-01), Elias et al.
patent: 6218611 (2001-04-01), Bias
Cuneo Kamand
Dinh Tuan
Rosenberg , Klein & Lee
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