Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
2001-12-20
2003-05-27
Vu, Hien (Department: 2833)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
C439S540100
Reexamination Certificate
active
06568958
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector, and particularly to an electrical connector with improved high voltage penetration resisting performance.
2. Description of Related Art
Referring to
FIG. 5
, a conventional electrical connector comprises an insulating housing
60
defining first and second receiving slots
62
and
64
to receive first and second terminal inserts
70
and
72
therein, respectively. A plurality of terminals
71
and
73
are insert molded with the terminal inserts
70
and
72
, respectively. Two board locks
66
are secured to the housing
60
to fix the connector to a printed circuit board. A shield
90
is attached on the housing
60
to shield the housing
60
and the terminals
71
and
73
. However, to such a mini-type connector, a minimum distance between a top wall
92
of the shield
90
and exposed arcuate portions
71
a
of the terminals
71
is only about 0.3 mm which does not fit the industry standard (not less than 2.5 mm). It is well known that a good performance in resisting high voltage penetration is essential to the reliability of the connector. However, such a conventional design is apt to cause electrical current flowing from the shield
90
to the terminals
71
when a high voltage (1500 V) is applied to the shield
90
, resulting in a failure of the connector. To resolve the problem, the shield is relocated to be far away from the terminals to increase the distance therebetween. However, this causes the connector to be too bulky to be accepted by the industry.
SUMMARY OF THE INVENTION
Accordingly, the object of the present invention is to provide an electrical connector having improved high voltage penetration resisting performance.
To fulfill the above-mentioned object, an electrical connector of the present invention comprises an insulating housing and a shield having a top wall shielding a top surface of the housing. The housing defines first and second receiving slots receiving first and second terminal inserts therein, respectively. A plurality of first and second terminals are insert molded with the first and second terminal inserts, respectively. The terminals include contact portions, solder portions and arcuate portions between the contact portions and the solder portions. The arcuate portions of the terminals are directly exposed to the top wall of the shield. The top wall of the shield defines an opening at a position below which the arcuate portions of the terminals are arranged, thereby increasing a minimum distance between the top wall of the shield and the arcuate portions of the terminals to prevent the terminals from being damaged by high electrostatic charge.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the preferred embodiment when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5842886 (1998-12-01), Illg et al.
patent: 6129587 (2000-10-01), Huang
patent: 6155878 (2000-12-01), Chen
patent: 6290535 (2001-09-01), Lin et al.
patent: 6402562 (2002-06-01), Chang et al.
Hu Jinkui
Zhang Guohua
Zhu Zi-Qiang
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