Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
1999-12-10
2001-04-03
Paumen, Gary F. (Department: 2833)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
Reexamination Certificate
active
06210226
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an electrical connector having EMI shielding, more particularly to an electrical connector which can reliably resist impacts.
As electrical connectors are more extensively used, a variety of problems such as electromagnetic interference have assumed increased importance. It is now desired that an electrical connector have a reliable EMI shield. Such an electrical connector is disclosed in U.S. Pat. No. 5,718,605. A conventional electrical connector comprises a housing enclosed by a shield case, an upper lid of the shield and a shield base plate. The shield case includes a pair of side plate portions fitting along opposite sides of the housing and a located engaging portion fitting at a front of the housing. A screw fastening piece depends from a bottom edge of each side plate portion of the shield case, from a bottom edge of each side of the upper lid, and from each side of the shield base plate, respectively. Therefore, the electrical connector can be fixed to a printed circuit board by a pair of screws.
The design of the electrical connector requires an inconvenient assembly. Furthermore, the shield case of some prior art electrical connectors is not fixed to the housing at its sides so can not resist side impacts. Additionally, in some prior art connectors a rear side is not fastened to the circuit board and a rear part of the electrical connector will likely disconnect from a printed circuit board (not shown) when the connector is impacted downward at a front portion thereof.
BRIEF SUMMARY OF THE INVENTION
A main object of the present invention is to provide an electrical connector having shielding elements which can firmly secure the dielectric housing of the electrical connector to a printed circuit board and resist impacts to the electrical connector.
Another object of the present invention is to provide an electrical connector which has a desired terminal pitch and can reliably fix terminals in a dielectric housing thereof.
An electrical connector in accordance with the present invention comprises a dielectric housing, a plurality of terminals, a front shell and a rear shell. The dielectric housing includes a central portion, a projecting portion extending forward from a front end of the central portion, an upper portion with a first notch in a front thereof, and a pair of lateral faces each disposed with a pair of retaining plates. A clamping plate is disposed on each of opposite sides of the upper portion, a claw extends and substantially perpendicularly bends from a forward end of the clamping plate. The front shell has a front wall, a pair of lateral walls each extending from each side edge of the front wall for inserting between a corresponding pair of retaining plates of the dielectric housing, and a pair of retention arms depending from 20 an upper edge of the front wall of the front shell for latching to the claws of the dielectric housing. A latching leg respectively depends from a lower edge of each side wall and the rear wall of the rear shell for reliably latching the rear shell onto a printed circuit board. 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: 5288248 (1994-02-01), Chen
patent: 5637015 (1997-06-01), Tan et al.
patent: 5700164 (1997-12-01), Weidler et al.
patent: 5718605 (1998-02-01), Morikawa et al.
patent: 5980320 (1999-11-01), Slack et al.
patent: 5984726 (1999-11-01), Wu
patent: 6007381 (1999-12-01), Ando et al.
patent: 6050853 (2000-04-01), Ando et al.
patent: 6053773 (2000-04-01), Wu
Mou Zhi-Quan
Zhu Zi-Qiang
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Paumen Gary F.
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