Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2002-05-28
2004-05-25
Schuberg, Darren (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S759000, C248S121000
Reexamination Certificate
active
06741460
ABSTRACT:
BACKGROUND OF INVENTION
1. Field of the Invention
The present invention relates to a structure, and more particularly, to a structure for mounting a circuit board to a housing of a data processing device.
2. Description of the Prior Art
Please refer to FIG.
1
.
FIG. 1
is a perspective view of a prior art data processing device
10
. The data processing device
10
can be a server or a computer. The data processing device
10
comprises a shell
12
, a motherboard (circuit board)
14
, and a housing
16
. In order to mount the motherboard
14
onto the housing
16
, a surface of the housing
16
has a plurality of circular posts
16
a
installed on it, and the motherboard
14
has a plurality of holes
14
a
formed corresponding to the circular posts
16
a
. As shown in
FIG. 1
, upper portions of the circular posts
16
a
have a diameter smaller than a diameter of lower portions of the circular posts
16
a
for being inserted into the holes
14
a
of the motherboard
14
. Inner portions of the upper portions of the circular posts
16
a
are cut into threaded holes. Therefore, the motherboard
14
can be mounted onto the housing
16
by screwing screws
18
onto the corresponding threaded holes of the circular posts
16
a.
The prior art mounting method for mounting the motherboard
14
onto the housing
16
has many defects. Users must lock the plurality of screws
18
onto the threaded holes so as to fix the motherboard
14
onto the housing
16
. It is inconvenient, time consuming, and expensive. The detachment operation is also difficult. When users want to detach the motherboard
14
from the housing
16
, users must first remove all the screws
18
from the threaded holes, and then vertically lift up the motherboard
14
so as to detach the holes
14
a
of the motherboard
14
from the circular post
16
a
. The lifting motion is not difficult to achieve if the data processing device
10
is a small-scale personal computer. However, if the data processing device
10
is a server or other large-scale data processing device
10
, the motherboard
14
is not easily lifted since the motherboard
14
of the server is heavy. Moreover, some of the servers are installed on a rack for long times, making it difficult for users to detach the motherboard
14
from the rack directly when using the prior art assemble method. In addition, when locking the screws
18
into the threaded holes or unlocking the screw
18
from the threaded holes, it is easy to form a short circuit if a screw falls onto the motherboard
14
.
Therefore, a structure for easily mounting a motherboard onto a housing and easily detaching the motherboard from the housing of a data processing device is important for users.
SUMMARY OF INVENTION
It is therefore a primary objective of the claimed invention to provide a structure for easily mounting a circuit board onto a housing and easily detaching the circuit board from the housing of a data processing device, so as to solve problems of the prior art data processing device. Users can mount the circuit board onto the housing without using screws. The claimed invention structure is simple, has a low cost, and can prevent electromagnetic interference (EMI). Users can further install other components on the circuit board at a position above fixing devices so that the space of the circuit board can be efficiently used.
The claimed invention, briefly summarized, discloses a structure for mounting a circuit board to a housing of a data processing device. The structure comprises a mounting post, a retaining unit, and a stopper. The mounting post secured to the circuit board has a groove formed on the outer surface of the mounting post. The retaining unit provided on a surface of the housing has a slot with an open end for receiving the mounting post through the groove along a direction parallel to the surface of the housing. The circuit board is inserted into the housing through the cooperation of the mounting post and the retaining unit. The stopper provided on the housing of the data processing device is moveable between a first position and a second position. When the stopper is in the first position, the stopper stops the circuit board from moving out of the housing along the direction parallel to the surface of the housing. When the stopper is in the second position, the stopper allows the circuit board to move out from the housing along the direction parallel to the surface of the housing.
It is an advantage of the claimed invention that the claimed invention structure does not need to use screws to mount the circuit board onto the housing of the data processing device. Therefore, the claimed invention can prevent a short circuit from being caused by a screw falling onto the circuit board. Users can pull out the circuit board or insert the circuit board along the direction parallel to the surface of the housing, and do not need to vertically lift up the circuit board, so the assembly is convenient and quick. Besides, the housing of the data processing device, the retaining unit, and the mounting post are made of metal. Therefore, the circuit board can electrically connect to the ground housing through the mounting post and the retaining unit in order to efficiently prevent electromagnetic interference. The circuit board further comprises a throughhole. One end of the mounting post is secured to the throughhole by using surface mounting technology (SMT). An inner portion of the mounting post is cut into a threaded hole. The threaded hole can be used to install other components onto the circuit board so that the space of the circuit board can be efficiently used.
REFERENCES:
patent: 5490038 (1996-02-01), Scholder et al.
patent: 6186800 (2001-02-01), Klein et al.
Chang Yean Hsi
Hsu Winston
Schuberg Darren
Wistron Corporation
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