Socket having mating indicator

Details Socket having mating indicator Socket having mating indicator

2002-01-30

2002-09-17

Sircus, Brian (Department: 2839)

Electrical connectors

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

Including compound movement of coupling part

C439S259000

Reexamination Certificate

active

06450827

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a socket for connecting a central processing unit (CPU) with a printed circuit board (PCB) with zero insertion force (ZIF), and particularly to a socket having a mating indicator.
2. Prior Art
As shown in
FIG. 1
, a conventional ZIF socket is disclosed in China Patent No. ZL 99226536.3. The socket includes a base
5
, a cover
6
, a plurality of terminals, an actuator
7
and a mating indicator
8
. The base
5
defines a receiving hole
52
and a retaining cavity
54
in communication with the receiving hole
52
. The cover
6
is slidably attached to the base
5
and defines a through hole
62
corresponding to the receiving hole
52
. The actuator
7
includes an actuating portion
71
ratably received in the receiving hole
52
and a eccentric pin
72
extending from the actuating portion
71
and rotatably receiving in the through hole
62
. The actuating portion
71
includes first and second recesses
710
,
712
at a peripheral surface thereof. The mating indicator
8
is secured in the retaining cavity
54
of the base
5
and has a resilient bent portion
82
. When the cover
6
is located at a first position relative to the base
5
, the resilient bent portion
82
mates with the first recess
710
of the actuating portion
71
. When the cover
6
is located at a second position relative to the base
5
, the resilient bent portion
82
mates with the second recess
712
of the actuating portion
71
. Therefore, when the eccentric pin
72
of the actuator
7
is actuated to rotate the actuating portion
71
to locate the cover
6
at the first or second position, the bent portion
82
departs from the second or first recess
712
or
710
and then engages with the first or second recess
710
or
712
thereby indicating the position of the cover
6
and controlling actuation to the eccentric pin
72
.
However, indication of engagement of the bent portion
82
of the indicator
8
and the recess
710
or
712
of the actuating portion
71
is not readily discernible. Thus, position of the cover
6
relative to the base
5
is uneasy to be controlled and this adversely affects assembling of a CPU to a PCB through the socket.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a socket having a base, a cover and a mating indicator for obviously indicating relationship between the base and the cover.
Another object of the present invention is to provide a socket having an actuator and a mating indicator which prevents the actuator from excessive movement.
To achieve the above-mentioned object, an electrical connector in accordance with the present invention includes a base, a cover slidably attached to the base, an actuator and an indicator. A receiving hole is defined in the base. The cover defines a seat comprising first and second stop walls. A through hole is defined in the seat. The actuator includes a head, an actuating portion extending form the head and an eccentric pin extending from the actuating portion. The actuating portion is rotatably received in the through hole of the cover. The eccentric pin is rotatably received in the receiving hole of the base. The indicator is attached to the actuator and received in the seat of the cover. When the cover is located at a first position relative to the base, the indicator abuts against the first stop wall of cover. When the cover is located at a second position relative to the base, the indicator abuts against the second stop wall of the cover.


REFERENCES:
patent: 6071140 (2000-06-01), McHugh et al.
patent: 6200154 (2001-03-01), Yu
patent: 6231366 (2001-05-01), Pei et al.
patent: 6338646 (2002-01-01), Hara et al.

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