Electrical connectors – With circuit conductors and safety grounding provision
Reexamination Certificate
1999-12-21
2001-05-08
Paumen, Gary F. (Department: 2833)
Electrical connectors
With circuit conductors and safety grounding provision
C439S567000, C439S607070, C439S159000
Reexamination Certificate
active
06227879
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the invention
The present invention relates to a connector, and particularly to a connector with a grounding shroud having means for fixedly engaging with a circuit board.
2. Prior Art of the invention
Electrical connectors are usually used to establish electrical connection between an electronic component and a circuit board. However, electromagnetic interference, such as cross talk, commonly occurs during high speed signal transmission. Thus, conductive grounding shrouds are often used to shield the connector and must be electrically connected to ground in the circuit board on which the connector is mounted to overcome such problems. Such grounding shrouds and related connectors are respectively shown in
FIGS. 5 and 6
.
As shown in
FIG. 5
, a first conventional connector
5
comprises an insulative housing
50
, a plurality of contacts
51
received in the housing
50
, a grounding shroud
53
covering the housing
50
and a shield
52
positioned below the housing
50
. The housing
50
, the grounding shroud
53
and the shield
52
are joined together by engaging means thereof as well as a pair of bolts
57
. A card ejector
58
is positioned at a side of the shield
52
for manual ejection of a memory card therefrom. When the assembled connector
5
is mounted onto a circuit board
6
, a pair of board-locks
55
secured in the housing
50
are available to reliably secure the connector
5
to the circuit board
6
through a pair of through-holes
61
defined in the circuit board
6
so that it is unmovable during soldering. However, the pair of board-locks
55
increases the cost of the connector and enlarges the elongate dimension of the connector.
Referring to
FIG. 6
, a second conventional connector
70
disclosed in U.S. Pat. No. 5,470,259 comprises an insulative housing
72
, a plurality of contacts
74
received in the housing
72
and a grounding shroud
76
covering the housing
72
. The grounding shroud
76
comprises a plurality of terminal members
78
adapted to be electrically connected to a circuit board
80
to transmit electromagnetic signal therethrough. However, the grounding shroud
76
still does not provide a method of securing the second conventional connector
70
onto the circuit board
80
, so external retaining elements are still necessary to secure the second conventional connector onto the circuit board
80
. Hence, an improved electrical connector is required to overcome the disadvantages of the prior art.
BRIEF SUMMARY OF THIS INVENTION
An object of the present invention is to provide an electrical connector with a grounding shroud having locking means for fixedly engaging the grounding shroud and the electrical connector onto a circuit board.
To fulfil the above object, an electrical connector of the present invention includes a frame, a plurality of contacts received in the frame and a grounding shroud fixed on and covering the frame. The grounding shroud forms a number of protrusions each having a board-lock construction, downwardly extending beyond a mounting face of the frame. When the electrical connector is positioned on a circuit board, the protrusions fixedly engage with the circuit board, thereby preventing relative movement between the electrical connector and the circuit board during soldering of the contacts to the circuit board.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5192228 (1993-03-01), Collins et al.
patent: 5470259 (1995-11-01), Kaufman et al.
patent: 5772453 (1998-06-01), Tan et al.
patent: 5885100 (1999-03-01), Talend et al.
patent: 5938473 (1999-08-01), Nishio et al.
patent: 6012948 (2000-01-01), Wu
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Paumen Gary F.
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