CPU socket connector

Details CPU socket connector CPU socket connector

2002-04-19

2003-09-23

Vu, Hien (Department: 2833)

Electrical connectors

With supporting means for coupling part

Flange on coupling part

C439S566000, C439S342000

Reexamination Certificate

active

06623298

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a central processing unit (CPU) socket connector, and particularly to a CPU socket connector that can be securely soldered on a printed circuit board (PCB).
2. Description of Related Art
Referring to
FIGS. 8 and 8A
, a conventional CPU socket connector
8
(shown upside down against a printed circuit board (PCB)
7
) comprises a base
82
, a cover
83
movably mounted on the base
82
, and an actuator
84
for driving the cover
83
to move on the base
82
. The base
82
generally has a protruding section
821
at one end thereof. A plurality of conductive contacts (not shown) are received in the base
82
and each contact has a solder ball
81
attached thereon. The socket connector
8
is soldered on an upper surface of the PCB
7
by being subjected to a reflow process. The soldering balls
81
are soldered on solder pads (not shown) attached on the upper surface of the PCB
7
so that the socket connector
8
is electrically connected with the PCB
7
.
Sometimes, it is desirable to solder a plurality of electrical elements on a bottom surface of the PCB
7
after the socket connector
8
is soldered on the upper surface, so the PCB
7
must be turned over and subjected to a reflow process with the socket connector
8
already in place. The solder balls
81
will melt again during the second reflow process and the socket connector
8
will tend to incline downwardly because the center of gravity of the socket connector
8
is near the protruding section
821
. The soldering balls
81
adjacent to the protruding section
821
may become disconnected from the solder pads on the PCB
7
(see
FIG. 8A
) and this affects the electrical connection between the contacts of the socket connector
8
and the PCB
7
.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a CPU socket connector which is securely retained on a PCB during an invented solder reflow process by providing a fastening means soldered on the PCB.
In order to achieve the object set forth, an electrical socket connector in accordance with the present invention comprises a base, a cover movably mounted on the base and a fastening means. The base has contact receiving portion over much of its bottom surface, and a first protruding section at one end thereof. A plurality of conductive contacts are received into corresponding passageways of the base and each has a solder ball attached thereon. The fastening means is assembled on the first protruding section of the base and at least has a soldering portion. The soldering portion and the solder balls are soldered on the PCB together.


REFERENCES:
patent: 5199884 (1993-04-01), Kaufman et al.
patent: 6152766 (2000-11-01), Wu et al.
patent: 6155848 (2000-12-01), Lin
patent: 6231367 (2001-05-01), Hsiao et al.
patent: 6319059 (2001-11-01), Wu

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