Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – Distinct contact secured to panel circuit
Reexamination Certificate
2000-12-26
2002-01-15
Paumen, Gary (Department: 2833)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
Distinct contact secured to panel circuit
C439S842000
Reexamination Certificate
active
06338634
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to an electrical connector, and particularly to an electrical connector with anti-wicking terminals.
2. Description of the Related Art
Referring to
FIGS. 3 and 4
of the present application, a conventional electrical connector includes a plurality of surface mount terminals
9
received in a plurality of passageways
81
of an insulating housing
80
. Each terminal
9
comprises a vertical base plate
90
, a horizontal soldering portion
91
extending outwardly from a bottom edge of the base plate
90
, two mounting arms
93
extending inwardly from two lateral sides of the base plate
90
and three vertical engaging portions
92
extending upwardly from the two arms
93
and a top edge of the base plate
90
, respectively. A solder pad
71
is disposed between each soldering portion
91
and a printed circuit board
7
for soldering the terminals
9
to the printed circuit board
7
by using surface mounting technology (SMT) by subject the solder pads
71
to a heat source, for example, an infrared radiation. In the prior art, molten solder may climb upwardly along a bottom face of the soldering portions
91
and then an inner face of the base plate
90
and the mounting arms
93
to contaminate engaging faces
922
of the engaging portion
92
. Thus, a signal transmission quality will be adversely affected between the connector and a complementary connector (not shown). Accordingly, an improved electrical connector is required to overcome the disadvantages of the prior art.
BRIEF SUMMARY OF THE INVENTION
An object of the present invention is to provide an electrical connector with anti-wicking terminals which can effectively prevent molten solder from flowing upwardly to contaminate engaging portions of the terminals when the connector is surface mounted to a printed circuit board.
To achieve the above-mentioned object, an electrical connector of the present invention comprises an insulating housing and a plurality of terminals, wherein the insulating housing has a plurality of passageways and the terminals are received in the passageways. Each terminal is formed with a base plate in a corresponding passageway near a central rib of the housing. A pair of mounting arms are received in the corresponding passageway and extend outwardly from two sides of the base plate to fixedly engage with an outer wall of the housing. Two engaging portions are received in the corresponding passageway and extend vertically upwardly from the mounting arms, respectively. Each engaging portion has an inner face for electrically engaging with a pin of a complementary connector. The terminal further has a step portion horizontally outwardly extend from a bottom edge of the base plate. A solder tail extends horizontally outwardly from a bottom edge of a vertical section of the step portion beyond an outer face of the outer wall. Both the solder tail and the vertical section of the step portion are located below a bottom face of the housing. The solder tail has a bottom face for surface mounting to a printed circuit board. The step portion has a horizontal section received in and extends substantially across a bottom of the corresponding passageway.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the preferred embodiments when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 4693528 (1987-09-01), Asick et al.
patent: 5667393 (1997-09-01), Grabbe et al.
patent: 5882212 (1999-03-01), McHugh et al.
patent: 5902136 (1999-05-01), Lemke et al.
patent: 5921787 (1999-07-01), Pope et al.
patent: 5938456 (1999-08-01), Kozel et al.
patent: 6036504 (2000-03-01), McHugh et al.
patent: 6099359 (2000-08-01), Yamamuro
patent: 6244883 (2001-06-01), Ito et al.
Gushi Ross
Hon Hai - Precision Ind. Co., Ltd.
Paumen Gary
Wei Te Chung
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