Electrical connector securely mounted on a printed circuit...

Details Electrical connector securely mounted on a printed circuit... Electrical connector securely mounted on a printed circuit...

2001-03-16

2002-06-25

Nguyen, Khiem (Department: 2839)

Electrical connectors

With supporting means for coupling part

Having resilient means engaging panel opening

C439S083000

Reexamination Certificate

active

06409539

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector mounted on a printed circuit board (PCB), and particularly to an electrical connector securely mounted on a printed circuit board.
2. Description of the Related Art
Referring to
FIG. 1
, a conventional electrical connector mounted on a PCB (not shown) comprises an insulating housing
7
, a shield
8
and a plurality of contacts
9
. The housing
7
forms a mating face
71
in a front thereof with a pair of through holes
75
defined at both sides. A step portion
73
is formed at a rear of the housing
7
and defines two through holes
74
thereon corresponding to the through holes
75
on the mating face
71
. At a bottom of the step portion
73
is a bottom surface
72
formed perpendicularly to the mating face
71
. A pair of locking means
10
for securing the connector to the PCB each comprises a vertical portion
104
with an aperture
103
thereon, a pair of legs
102
extending parallel to the vertical portion
104
, and a connection portion
101
connected therebetween. In assembly, a respective bolt
11
is inserted throughout the aperture
103
of the locking means
10
and the through hole
75
on the mating face
71
and riveted onto the shield
8
to associate the locking means
10
with the housing
7
, whereby the legs
102
of the locking means
10
are inserted through the through holes
74
on the step portion
73
and secured in holes of the PCB.
However, during insertion of a mating connector, an inserting force exerted on the connector produces a turning moment on the connector and the legs of the locking means become the pivot point of the turning moment. There is such a long distance between the legs and the mating face of the conventional connector that a small inserting force will lead to a large tuning moment. Subsequently, a resisting moment corresponding to the turning moment is acting on the legs and a longitudinal length of the legs serves as the moment arm. The legs will be subjected to a larger resisting force due to a shorter moment arm of the resisting force. Namely, when the connector is confronted with an operation of inserting/withdrawing a mating connector (not shown) for many times, engagement between parts of the connector may be destroyed and stability of signal transmission cannot be achieved.
Hence, an improved connector for mounting onto a PCB is required to overcome the above-described disadvantages.
SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide an electrical connector which can be firmly secured on a PCB.
To achieve the afore-mentioned object, an electrical connector of the present invention includes an insulating housing with a plurality of cavities therein, a shield for enclosing the housing, a plurality of contacts received in the corresponding cavities, a pair of bolts for connecting the shield and the housing, and a pair of resisting pads. The housing forms a front mating face and a bottom surface. A mating portion extending from the mating face is covered by an enclosing portion of the shield. A pair of boardlocks and a soldering pad are formed at a bottom of the shield for securing the connector on a printed circuit board. The resisting pad includes a retentive portion adapted for securing to the printed circuit board and a vertical portion received in a corresponding recess defined in the bottom surface of the housing. The resisting pads, the soldering pad and the pair of boardlocks of the shield provide an increasing retentive force on the connector comparing to a conventional connector, whereby the connector of the present invention is firmly secured on the PCB.
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: 6077118 (2000-06-01), Harada et al.
patent: 6126485 (2000-10-01), Shobara et al.
patent: 6155878 (2000-12-01), Chen

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