Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
2002-03-18
2003-10-14
Prasad, Chandrika (Department: 2839)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
C439S594000, C439S352000
Reexamination Certificate
active
06632105
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an electrical connector, and particularly to an input/output (I/O) connector for an electrical device.
BACKGROUND OF THE INVENTION
An input/output (I/O) connector is commonly used in an electrical device for transferring signals. A conventional I/O connector as disclosed in
FIGS. 1 and 2
includes an insulative housing receiving a plurality of conductive contacts therein and a shell. The shell, before completely assembled to the housing, has a bottom plate and a pair of horizontally and rearwardly extending cantilevers
320
′ connect with the bottom plate. The insulative housing has a hole extending in a front-to-back direction. A recess
131
′ communicating with the hole is defined in a rear surface of the insulative housing and is divided into an upper portion and a lower portion by the hole. The pair of cantilevers
320
′ extend through the hole and are bent upwardly to be held in the recess
131
′, therefore the insulative housing is assembled with the shell. However, the cantilevers
320
′ only press on the upper portion of the recess and do not press on the lower portion of the recess, so during soldering the I/O connector to a print circuit board (PCB), the bottom plate of the shell will bulge downwardly due to differences in thermal expansion coefficients, heat conductivity and stress between the insulative housing and the shell, which will destroy the electrical connection between the conductive contacts and the PCB.
Hence, an improved I/O connector is needed to overcome the above-mentioned deficiencies of current I/O connectors.
SUMMARY OF THE INVENTION
Accordingly, a primary object of the present invention is to provide an Input/Output (I/O) connector for firmly assembling an insulative housing with a shell.
To achieve the above object, an I/O connector in accordance with the present invention comprises an insulative housing, a plurality of conductive contacts retained in the insulative housing for surface mounting to a printed circuit board and a shell. The insulative housing includes a first housing portion, a second housing portion and a connecting portion connecting the first housing portion and the second housing portion. The connecting portion has a hole extending in a front-to-back direction and a recess communicating with the hole. The recess has an upper wall surface and a lower wall surface. The shell is made of a one-piece metal sheet and includes a top plate, a bottom plate and a pair of side plates connecting the bottom plate and the top plate. The bottom plate has a pair of cantilevers extending perpendicularly and rearwardly to insert into the hole of the insulative housing and then be bent to be received in the recess of the insulative housing, thereby confines the pair of cantilevers between the upper and the lower wall surfaces for preventing the shell from bulging downwardly.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5407366 (1995-04-01), Briones et al.
patent: 6093057 (2000-07-01), Lok
patent: 6241556 (2001-06-01), Chih
patent: 6375498 (2002-04-01), Yu et al.
Liu Li-Qi
Zhang Jian-Qiang
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Prasad Chandrika
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