Universal serial bus receptacle connector

Details Universal serial bus receptacle connector Universal serial bus receptacle connector

2001-07-19

2003-04-29

Vu, Hien (Department: 2833)

Electrical connectors

Electromagnetic or electrostatic shield

Shielding individually surrounding or interposed between...

C439S079000

Reexamination Certificate

active

06554648

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a universal serial bus (USB) receptacle connector, and particularly to a USB receptacle connector which can ensure reliable grounding and electromagnetic interference (EMI) shielding.
2. Description of Related Art
USB electrical connectors have been recently developed to replace a variety of computer input/output connectors for connection with various peripheral devices, for example, a mouse, keyboard, printer and scanner. Referring to FIG.
4
and
FIG. 5
, a conventional USB receptacle connector
7
which can connect with a conventional mating plug connector
7
′ comprises an insulative housing
70
, a plurality of terminals
72
received in the insulative housing
70
, a front shell
74
covering the front of the insulative, housing
70
and a rear shell
75
covering the rear of the insulative housing
70
. The front shell
74
comprises a mating opening
740
. Either of two opposite sides
743
of the mating opening
740
defines a pair of latches
741
extending from a mid-rear end of the front shell
74
to the mating opening
740
. The latch
741
defines an engaging head
742
bent toward the insulative housing
70
. When the USB receptacle connector
7
connects with the mating plug connector
7
′, the engaging heads
742
slide into rectangular holes
72
′ of an outer face
71
′ of a shell
74
′ of the mating plug connector
7
′ and are received in the rectangular holes
72
′. After the front shell
74
of the USB receptacle connector
7
connects with the shell
74
′ of the mating plug connector
7
′, the two shells
74
and
74
′ can be grounded so as to ensure EMI shielding.
However, during the mating/unmating of the two connectors
7
and
7
′, the front shell
74
of the connector
7
is often enlarged and the engaging heads
742
of the latch
741
of the front shell
74
do not always contact with the outer face
71
′ of the shell
74
′ and therefore may have interval interruption. Referring to
FIG. 6
, the engaging heads
742
of the latch
741
of the front shell
74
are received in the rectangular holes
72
′ but do not contact with the shell
74
′. Thus, the connection of the two shells
74
and
74
′ is not reliable.
SUMMARY OF THE INVENTION
Accordingly, the object of the present invention is to provide a USB receptacle connector wherein its shell defines a pair of contact tabs so as to make the shell of the USB receptacle connector continuously connect with the shell of the mating plug connector and ensure the USB receptacle connector havefavorable effect of EMI shielding all the time.
In order to achieve the object set forth, a USB receptacle connector comprises an insulative housing, a front shell part covering the front of the insulative housing, a rear shell part covering the rear of the insulative housing and a plurality of terminals received in the insulative housing. The front shell part forms a mating port for insertion of a mating plug connector. Either of two sidewalls of the mating port defines a pair of latches extending forward to the mating port. The latch defines an engaging head bent toward the insulative housing. Either of two sidewalls of the front shell part defines a contact tab extending from the mating port rearward and between the two latches. The two contact tabs respectively define a contact portion bent toward the insulative housing.
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: 5470238 (1995-11-01), Walden
patent: 5975954 (1999-11-01), Wu et al.
patent: 6059581 (2000-05-01), Wu
patent: 6109967 (2000-08-01), Chiou
patent: 6186830 (2001-02-01), Lin et al.

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