Tool for attaching integrated circuit package to electrical...

Details Tool for attaching integrated circuit package to electrical... Tool for attaching integrated circuit package to electrical...

2003-09-24

2004-10-19

Gilman, Alex (Department: 2833)

Electrical connectors

Preformed panel circuit arrangement, e.g., pcb, icm, dip,...

With provision to conduct electricity from panel circuit to...

C439S330000

Reexamination Certificate

active

06805562

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a tool receiving an electrical connector thereon for assisting in attaching an integrated circuit package such as a land grid array (LGA) central processing unit (CPU) onto the connector with zero insertion force, thereby electrically connecting the CPU with a circuit substrate such as a printed circuit board (PCB). This application relates to a contemporaneously filed application having he same title, the same applicant and the same assignee with the instant application.
2. Description of the Prior Art
Referring to
FIG. 5
, a conventional electrical connector
9
is used for electrically connecting an integrated circuit package such as a land grid array (LGA) central processing unit (CPU)
8
with a circuit substrate such as a printed circuit board (PCB) (not shown). The connector
9
comprises a substantially rectangular insulative housing
91
, and a plurality of electrical contacts
92
received in the housing
91
. The housing
91
comprises a generally rectangular bottom wall
911
, and four raised sidewalls
912
extending perpendicularly from a periphery of the bottom wall
911
. A multiplicity of passageways
914
is defined in the bottom wall
911
, the passageways
914
receiving a corresponding number of the contacts
92
therein. The sidewalls
912
define a generally rectangular cavity
913
therebetween, the cavity
913
receiving the CPU
8
therein. A spring arm
915
is formed in each of two adjacent sidewalls
912
. A beveled block
9150
is formed at a free end of the spring arm
915
, the block
9150
protruding into the cavity
913
. A beveled surface
9151
is formed at an upper portion of the block
9150
.
In attaching the CPU
8
onto the connector
9
, the CPU
8
is firstly disposed on the beveled surfaces
9151
of the spring arms
915
of the housing
91
. The CPU
8
is pressed downwardly, with two adjacent sidewalls of the CPU against the beveled surfaces
9151
. The spring arms
915
elastically bend toward the corresponding sidewalls
912
of the connector
9
, due to compression from the CPU
8
. When a periphery of each of the blocks
9150
resiliently abuts against a corresponding sidewall of the CPU
8
, a multiplicity of metal contact pads (not shown) of the CPU
8
electrically contacts the corresponding contacts
92
of the connector
9
respectively. The connector
9
electrically connects with the PCB, thereby electrically connecting the PCB with the CPU
8
.
The CPU
8
is typically made of porcelain, and the housing
91
is typically made of insulative material such as plastic. During above-mentioned operation, the CPU
8
is liable to scrape the blocks
9150
of the connector
9
. Some crumbs scraped from the blocks
9150
are liable to stick on a bottom of the CPU
8
, and locate between the contact pads of the CPU
8
and the contacts
92
of the connector
9
. This easily leads to disruption of the electrical connection between the CPU
8
and the PCB.
Additionally, when the spring arms
915
are relatively thin, portions of the spring arms
915
adjoining to the corresponding sidewalls
912
are liable to be broken during above-mentioned operation. When the spring arms
915
are relatively thick, the spring arms
915
is unlikely to be elastically bended due to less elasticity. Thus, the CPU
8
cannot electrically contact the contacts
92
of the connector
9
.
In view of the above, a tool receiving the connector
9
thereon to assist the connector
9
in overcoming the above-mentioned disadvantages is desired.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a tool, which receives an electrical connector thereon for assisting in reliably readily attaching an integrated circuit package such as a land grid array (LGA) central processing unit (CPU) onto the connector with zero insertion force, thereby electrically connecting the CPU with a circuit substrate such as a printed circuit board (PCB).
To achieve the above-mentioned objects, a tool in accordance with a preferred embodiment of the present invention comprises a substantially rectangular base, and a pair of actuation members formed at two adjacent sides of the base. The base defines a substantially rectangular opening in a middle thereof, and a pair of chambers in the two adjacent sides thereof. The actuation members are disposed in the chambers of the base respectively. Each actuation member comprises a bridging portion spanning across the chamber and connecting with the base, a vertical driving portion perpendicularly crossing the bridging portion, a connecting portion connecting a junction of the bridging portion and driving portion with a bottom of the base, and an operating portion adjoining an outside of the driving portion. The operating portion comprises a beam extending perpendicularly from a bottom of the driving portion, and a push button formed at a free end of the beam and protruding out from the base. The push button is pushable to pivot an upper section of the driving portion.
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: 4033032 (1977-07-01), Romania et al.
patent: 4141138 (1979-02-01), Quick
patent: 4169642 (1979-10-01), Mouissie
patent: 4223370 (1980-09-01), Quere et al.
patent: 4392301 (1983-07-01), Hannes et al.
patent: 4420207 (1983-12-01), Nishikawa
patent: 4601525 (1986-07-01), Kandybowski
patent: 4679319 (1987-07-01), Grabbe et al.
patent: 4679871 (1987-07-01), Egawa
patent: 4934944 (1990-06-01), Kozel et al.
patent: 5288266 (1994-02-01), Halley
patent: 5458498 (1995-10-01), Ii et al.
patent: 5566445 (1996-10-01), Piao
patent: 5611698 (1997-03-01), Ito
patent: 5975915 (1999-11-01), Yamazaki et al.
patent: 444960 (2001-07-01), None

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