Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Reexamination Certificate
1999-12-10
2001-04-03
Patel, Tulsidas (Department: 2839)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
C439S637000
Reexamination Certificate
active
06210177
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a board-to-board electrical connector, and particularly to an electrical connector for signal transmission between different circuit boards.
U.S. Pat. Nos. 5,277,597, and Taiwan Patent Application Nos. 86202873, 86206353 each disclose a conventional board-to-board-to-board electrical connector. Referring to
FIGS. 1A and 1B
, a conventional board-to-board electrical connector
3
comprises an insulative housing
4
and a plurality of terminals
5
. The insulative housing
4
includes a pair of side walls
41
,
42
which are parallel to each other. A central portion
43
is disposed between the side walls
41
,
42
. A plurality of passageways
46
is exposed on opposite surfaces of the central portion
43
and the passageways
46
are equally distanced from each other by spacing boards (not shown). The terminals
5
are received in corresponding passageways
46
and each terminal
5
comprises a fixing portion
51
, a contacting portion
52
and a soldering portion
53
. The contacting portion
52
and the soldering portion
53
are respectively formed at opposite ends of the fixing portion
51
. After the terminal
5
is assembled in the insulative housing
4
, the soldering portion
53
is folded with right angle to solder on a circuit board (not shown). A plurality of barbs
55
is formed on opposites edges for engaging with the spacing boards for securing in the insulative housing
4
.
However, the terminals
5
are assembled to the insulative housing
4
just through engagement between the barbs
55
and the spacing boards. This engagement is not reliable while an external force is exerted on the soldering portion
53
of each terminal
5
. Under the external force the terminals
5
will be buckled inwardly. Furthermore, the soldering portion
53
is folded after the terminals
5
assembled to the insulative housing
4
, thus, an additional tool is needed and planarity of the soldering portions
53
can not be properly controlled either.
BRIEF SUMMARY OF THE INVENTION
A main object of the present invention is to provide an electrical connector having an insulative housing and a plurality of terminals, each terminal being formed with a reliable structure for easily assembling and positioning the terminal to the housing.
To fulfill the above-mentioned object, according to a preferred embodiment of the present invention, an electrical connector comprises an insulative housing and a plurality of terminals. The insulative housing includes a central portion, a pair of side walls formed on opposite sides of the central portion, a pair of lateral walls formed on lateral sides of the central portion. The central portion and the side walls together define a receiving space for facilitating the process of assembling terminals to the insulative housing. The central portion defines a plurality of passageways therethrough for receiving corresponding terminals therein. The passageways are spaced from each other by corresponding spacing boards. Each terminal comprises a fixing portion, a contacting portion, a slanting portion and a tail portion. The contacting portion is formed at the top end thereof for electrically contacting with a mating connector. The slanting portion slantways extends from the fixing portion with an obtuse angle for dispersing an insertion force exerted thereon. A tail portion is formed at the end of the slanting portion with a pair of engaging portions formed at lateral edges thereof, the engaging portions being securely received in corresponding T-shaped slots. A soldering portion of each terminal is folded at a same plane before soldering on a circuit board. Therefore, after the terminals are assembled to the insulative housing, the soldering portions of corresponding terminals can be arranged with a proper planarity and the quality of solder process is also improved.
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: 5057027 (1991-10-01), Yamada et al.
patent: 5277597 (1994-01-01), Masami et al.
patent: 5626500 (1997-05-01), Yoshimura
patent: 5667393 (1997-09-01), Grabbe et al.
patent: 5746622 (1998-05-01), Consoli et al.
Chang Evons
Huang Guan-Fu
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Patel Tulsidas
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