Electrical connector

Details Electrical connector Electrical connector

1999-10-19

2001-01-30

Paumen, Gary F. (Department: 2833)

Electrical connectors

Preformed panel circuit arrangement, e.g., pcb, icm, dip,...

Distinct contact secured to panel circuit

C439S660000

Reexamination Certificate

active

06179632

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to an electrical connector, and particularly to an electrical connector having a plurality of contacts which prevent wicking of molten solder during a wave soldering procedure.
BACKGROUND OF THE INVENTION
A board to board electrical connector is often surface mounted on a printed circuit board by soldering. Pertinent examples are disclosed in U.S. Pat. Nos. 5,681,174 and 5,697,799 and in Taiwan patent application Nos. 84105863, 85103740, 85103743 and 86202873.
Referring to
FIG. 6
, a conventional electrical connector
100
comprises an elongate housing
102
and a plurality of contacts
104
received in the housing
102
. The housing
102
includes two opposite thin sidewalls
105
. Each contact includes a fixing portion
106
, a mating portion
108
upwardly extending from an end of the fixing portion
106
and a soldering portion
110
perpendicularly extending from an opposite end of the fixing portion
106
for being surface mounted on a printed circuit board
112
.
However, since the soldering portion
110
perpendicularly extends from the fixing portion
106
, during the soldering procedure, molten solder easily wicks toward the fixing portion
106
thereby adversely affecting reliability of the solder connection. Furthermore, since each side wall
105
of the housing
102
is elongate and thin, during an ejection molding procedure and the soldering procedure, the side wall
105
is easily deformed as exposed to high temperature gradient.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide an electrical connector with rigid housing structure.
Another object of the present invention is to provide an electrical connector which prevents the solder from being wicked to the fixing portion of the terminal thereby reducing the malfunction of the connector.
To achieve the objects mentioned above, an electrical connector comprises a housing and a plurality of contacts received in the housing. The housing includes a pair of elongate side walls and a mating board disposed between the side walls. A plurality of ribs laterally extends from opposite inner surfaces of the side walls toward the mating board thereby increasing the rigidity of the side walls. The mating board forms a plurality of lateral passageways in opposite surfaces thereof exposed to the side walls. Each contact includes a mating portion, a fixing portion extending from the mating portion, a slanted portion extending from the fixing portion for preventing molten solder from wicking, and a soldering portion extending from the slanted portion and perpendicular to the fixing portion. The fixing portions are securely received in the corresponding passageways of the housing.
Other objects can be easily drawn from the following description.


REFERENCES:
patent: 5667393 (1997-09-01), Grabbe et al.
patent: 5681174 (1997-10-01), Correll, Jr. et al.
patent: 5697799 (1997-12-01), Consoli et al.
patent: 5902136 (1999-05-01), Lemke et al.
patent: 5961347 (1999-10-01), Hsu
patent: 5971809 (1999-10-01), Ho

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