ZIF socket connector having improved contact arrangement

Details ZIF socket connector having improved contact arrangement ZIF socket connector having improved contact arrangement

1999-08-06

2001-04-10

Paumen, Gary (Department: 2833)

Electrical connectors

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

Including compound movement of coupling part

Reexamination Certificate

active

06213807

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a contact for a socket, and particularly to a contact for a ZIF socket.
2. Description of Prior Art
Referring to
FIG. 1
, a contact
6
for a ZIF socket generally comprises a base portion
61
, a connecting portion
62
connected to the base portion
61
and a body portion
63
extending from the connecting portion
62
. The base portion
61
forms a pair of fixing protrusions
611
on opposite edges thereof for being interferentially received in a housing
8
(see
FIG. 3
) whereby the base portions
61
are linearly aligned. The body portion
63
is U-shaped and forms a receiving portion
631
extending from the connecting portion
62
for receiving a pin
7
of a chipset (not shown) and a mating tail
632
extending from the receiving potion
631
for engaging with the pin
7
.
However, as shown in
FIG. 2
, when the pin
7
is moved to engage with the mating tail
632
of the contact
6
from the receiving portion
631
, a force f caused by resisting the movement of the pin
7
is exerted on the contact
6
. Thus, an accompanying moment for the force f is created but does not act on the center of mass of the contact
6
. Since the body portion
63
is U-shaped, a normal force from the mating tail
632
being exerted on the pin
7
is insufficient to maintain a stable contact resistance. Furthermore, the U-shaped body portion
63
does not promote the implementation of zero insertion force. Additionally, the linear alignment of interference between the base portions
61
of the contacts
6
and the housing
8
causes deformation of the housing.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a contact for a ZIF socket having a pair of fixing protrusions lying in a plane which is substantially perpendicular to the direction of the movement of a pin of a chipset thereby preventing unwanted moment to the contact.
Another object of the present invention is to provide a contact for a ZIF socket having a simplified body portion while generating sufficient normal force between the contact engaged with the pin to maintain a stable contact resistance and promoting the implementation of zero insertion force.
Yet another object of the present invention is to provide a housing having contacts interferentially engaged therewith wherein the engagement force between adjacent rows of the contacts is not linearly aligned for thereby reducing deformation of the housing.
In order to achieve the objects set forth, a contact for a ZIF socket for electrically connecting with a pin of a chipset in accordance with the present invention, comprises a base portion, a connecting portion extending from the base portion, and a body portion extending from one side of the connecting portion. The body portion includes a receiving portion adapted for receiving the pin of the chipset located in a first position, and a mating portion extending from the receiving portion for sidewardly gripping the pin of the chipset when the pin is moved from the first position to a second position. The base portion has a pair of fixing protrusions on opposite edges thereof for interferentially engaging with a housing. An interferential direction between the fixing protrusions and the housing is substantially perpendicular to a movement direction of the pin from the first portion to the second portion.


REFERENCES:
patent: 5044973 (1991-09-01), Noda et al.
patent: 5092789 (1992-03-01), Sinclair
patent: 5535513 (1996-07-01), Frantz
patent: 5658160 (1997-08-01), Lai
patent: 5746608 (1998-05-01), Taylor
patent: 5797774 (1998-08-01), Kaneko

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