Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
1998-10-01
2001-07-31
Paumen, Gary (Department: 2833)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
C439S607560, C439S616000
Reexamination Certificate
active
06267623
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to an electrical connector to be mounted to a printed circuit board and, in particular, to an electrical connector of a thin type.
In a conventional electrical connector, especially, a receptacle for receiving a plug connector, an insulator block is formed with a rectangular fitting hole or a mating portion
2
for receiving the plug connector as a mating connector. A plurality of contacts
3
are fixed to the insulator block and arranged in a row in the rectangular fitting hole. The insulator block is covered with a metallic shell fitted onto an outer surface of the insulator block.
However, miniaturization of the electrical connector of this kind is demanded in order to small-size an electronic device using the connector. Especially, it is required reduce a height of the electrical connector on a printed circuit board equipped in a liquid crystal display of a personal computer.
In order to respond the demand, the insulator block is small-sized so that the wall defining the fitting hole is reduced in the thickness. However, this results in reduced strength of the wall defining the mating portion of the connector. Therefore, reduction of the size of the insulator block is limited because excessive small size may cause damage of the wall on connection and/or disconnection with the mating connector.
Another approach is known in the art where, taking into consideration that the lower surface of the electrical connector is disposed on the printed circuit board, the lower portion of the electrical connector is omitted to reduce the height of the electrical connector on the printed circuit board. However, the mating portion is opened at the lower side so that contacts are exposed toward the surface of the printed circuit board. Therefore, it is necessary to make a sufficient distance between the contacts and the printed circuit board so that the contacts are contaminated with or undesirably adhered to solder on a soldering process for connecting the electric connector and other parts onto the printed circuit board. Accordingly, sufficient reduction of size cannot be realized.
SUMMARY OF THE INVENTION
It is therefore, an object of this invention to provide an electrical connector which has a reduced size but does not have any problem in strength for connection and disconnection of a mating connector and in soldering process to a printed circuit board.
According to this invention, there is provided an electrical connector comprising: an insulator block having a long bar portion of a rectangular cross section and a pair of pillar portions projecting from the same surface of opposite end portions of the bar portion in a direction perpendicular to the bar portion; a plurality of contacts fixed to the bar portion and arranged in a row along a longitudinal direction of the bar portions and in a parallel with one another and with the pillar portions; and a metallic shell fitted onto the insulator block and having two flat plate portions extending from one to the other of the pillar portions in parallel with each other at a distance defined by a size of the pillar portions, the two flat plate portions and the pillar portions defining a mating hole for receiving a mating connector.
REFERENCES:
patent: 5209677 (1993-05-01), Bricaud
patent: 5273459 (1993-12-01), Davis
patent: 5591050 (1997-01-01), Sueoka
patent: 5603639 (1997-02-01), Lai et al.
patent: 5674085 (1997-10-01), Davis et al.
patent: 5713746 (1998-02-01), Olson et al.
Gilman Alexander
Japan Aviation Electronics Industry Limited
Laff, Whitesel & Saret, Ltd.
Paumen Gary
Whitesel J. Warren
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