Electrical socket

Details Electrical socket Electrical socket

2001-12-12

2002-10-29

Paumen, Gary F. (Department: 2833)

Electrical connectors

With coupling movement-actuating means or retaining means in...

Including compound movement of coupling part

Reexamination Certificate

active

06471535

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical socket, and particularly to a CPU socket having improved conductive contacts.
2. Description of Prior Art
A CPU socket is widely used for supporting the CPU to electrically connect with an underlying printed circuit board (PCB). In order to be competitive, the CPU socket must have good-performance contacts and fine contact pitch.
Referring to
FIGS. 8 and 9
, a prior art contact
60
used for a CPU socket and a contact carrier
70
for producing the contacts
60
are shown, respectively. The contact carrier
70
is stamped and formed from a metal sheet, and is formed with a contact strip
66
and a plurality of contacts
60
arranged side-by-side and connected with the contact strip
66
by a number of links
65
. Each link
65
is commonly connected to every two adjacent contacts
60
and is aligned with a corresponding positioning hole
67
defined in the contact strip
66
. The contact
60
has a wide retaining body
61
, a mating arm
63
and a soldering portion
64
extending from opposite ends of the retaining body
61
. The retaining body
61
forms several barbs
611
on opposite sides thereof for retaining in the base of the socket. The mating arm
63
is adapted for conductively contacting with a pin
7
of a CPU (not shown), and extends crookedly from the retaining body
61
to be long enough for achieving needed compliance. Such a crooked and long shape of the mating beam
63
makes the whole contact
60
fairly wide or fat and thus the contact pitch of the contact carrier
70
cannot be reduced without sacrificing the needed compliance.
Hence, an improved conductive contact used for an electrical socket 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 socket having fine contact pitch and good performance.
Another object of the present invention is to provide an electrical socket having conductive contacts which have a simple structure while maintaining good performance.
To fulfill the above-mentioned objects, an electrical socket in accordance with the present invention is used for supporting CPU to electrically connect with a PCB. The electrical socket comprises a non-conductive base defining plural rows of through holes, a plurality of conductive terminals inserted into corresponding through holes, and a slidable cover mounted on the base. Each terminal has a retaining portion, a soldering portion and a mating beam extending from opposite ends of the retaining portion, respectively. The mating beam extends slantedly and upwardly from the retaining portion and locates beyond a top face of the base for conductively contacting a corresponding pin of the CPU. The slidable cover has a plate body defining plural rows of pin holes corresponding to the through holes for insertion of pins of the CPU, and plural elongate ribs depending from the body plate to be mounted between every two adjacent rows of terminals retained in the base.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 5562474 (1996-10-01), Lee
patent: 5649836 (1997-07-01), Kashiwagi
patent: 6086401 (2000-07-01), Hsiung et al.
patent: 6142811 (2000-11-01), Lin
patent: 6213807 (2001-04-01), Huang et al.
patent: 6152757 (2001-11-01), Szu
patent: 6328587 (2001-12-01), Hsu

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