Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Reexamination Certificate
2003-06-17
2004-05-11
Ta, Tho D. (Department: 2833)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
C439S525000, C439S071000
Reexamination Certificate
active
06733304
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector assembly used for electrically connecting a land grid array (LGA) integrated circuit (IC) module to a printed circuit board (PCB), and particularly to such electrical connector assembly which provides excellent joining between the sub-parts thereof.
2. Description of the Prior Art
An electrical connector assembly used for electrically connecting an LGA electrical component to a PCB is widely applied in the field of electronics, and a correlative article is found in
Nonlinear Analysis Helps Design LGA Connectors
(Connector Specifier, February 2001). Such electrical connector assemblies are disclosed in U.S. Pat. Nos. 6,027,345, 6,146,151, 6,146,152, 6,164,978 and 6,293,806.
FIG. 4
shows such a conventional electrical connector assembly
6
, comprising a frame
61
and a base
62
fixed with the frame
61
. The frame
61
defines a pair of orientation holes
611
on two opposite sides thereof respectively, and a plurality of recesses
612
in two adjacent sides thereof. The frame
61
further defines two fixing holes
613
at the diagonally corners thereof, with each fixing hole
613
being surrounded by a step (not shown) thereat. The base
62
defines a multiplicity of passageways
621
adapted to receive a multiplicity of contacts (not shown). The base
62
defines two forklike fixing members
622
and two orientation posts
624
, respectively corresponding to the fixing holes
613
and the orientation holes
611
of the frame
61
. In addition, the base further defines a plurality of restricting posts
623
corresponding to the recesses
612
of the frame
61
. When the frame
61
and the base
62
are assembled together, the forklike fixing members
622
cooperate with the fixing holes
613
to fix the base
62
on the frame
61
firmly. Because each fixing member
622
is forklike, a portion thereof connecting with the base
62
is relatively weak. The fixing member
622
is liable to rupture during assembly of the frame
61
to the base
62
. When this happens, the frame
61
is prone to detach from the base
62
. Moreover, it requires using a slide for a mold design to form the forklike fixing member
622
, which will increase the manufacturing cost in molding.
Hence, a new electrical connector assembly is required to overcome the above-described disadvantages.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an electrical connector assembly having securely combined sub-parts.
In order to achieve the aforementioned object, an electrical connector assembly in accordance with a preferred embodiment of the present invention comprises a base and a frame assembled with the base. The base comprises two generally cylindrical fixing posts at two diagonally opposite comers thereof. Each fixing post is generally a solid column, but with a planar surface on a circumferential periphery thereof. Each fixing post comprises a top fixing portion. The frame defines two fixing holes corresponding to the fixing posts. Each fixing hole is surrounded by a step thereat. When the base and the frame are assembled together, the fixing posts are deformably received through the fixing holes respectively, and the fixing portions hook on the steps. Thus the frame and the base are combined together firmly and securely. Because the fixing posts are solid and generally cylindrical, in assembly, the fixing posts can fasten the frame on the base firmly and securely with minimal risk of breakage.
REFERENCES:
patent: 5674078 (1997-10-01), Davis et al.
patent: 5793618 (1998-08-01), Chan et al.
patent: 6027345 (2000-02-01), McHugh et al.
patent: 6146151 (2000-11-01), Li
patent: 6146152 (2000-11-01), McHugh et al.
patent: 6164978 (2000-12-01), McHugh et al.
patent: 6168477 (2001-01-01), Shih et al.
patent: 6293806 (2001-09-01), Yu
patent: 6425767 (2002-07-01), Lin
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Leon Edwin A.
Ta Tho D.
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