Reliably assembly for high density connector

Details Reliably assembly for high density connector Reliably assembly for high density connector

1999-12-01

2001-03-20

Paumen, Gary (Department: 2833)

Electrical connectors

Electromagnetic or electrostatic shield

Shielding individually surrounding or interposed between...

C439S571000

Reexamination Certificate

active

06203374

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a high density connector, and particularly to a high density connector with a grounding portion and an attaching portion.
With recent developments in communications, interference in an increasing range of signals is a more important problem. To guard against such interference, high density connectors are covered with conductive shields. An attaching means is generally used to connect a shield to ground.
Referring to
FIG. 3
, a previous high density connector as disclosed in the copending application Ser. No. 09/053,417 filed Apr. 1, 1998 having some common applicants with the invention, comprises a dielectric housing
82
, a conductive shield
81
covering a front end of the housing
82
, a pair of conductive grounding portions
83
and a pair of conductive attaching portions
84
. The attaching portions
84
connect the shield
81
and the grounding portion
83
thereby locking the shield
81
, the housing
82
and the grounding portion
83
together. A pair of retaining holes
821
is respectively disposed in lateral ends of the housing
82
. A pair of holes
811
is respectively defined in lateral ends of the shield
81
. A joining plate
833
of each grounding portion
83
joins an opening plate
834
thereof and a soldering body
832
thereof soldered to a PCB. The opening plates
834
each define an opening
831
. The openings
831
are aligned with the retaining holes
821
and the holes
811
. The attaching portion
84
includes a tubular part
841
and a block
842
at an end of the tubular part
841
.
Further referring to
FIG. 4
, in assembly, the tubular parts
841
sequentially extend through the openings
831
of the grounding portions
83
, the retaining holes
821
of the housing
82
and the holes
811
of the shield
81
and are then riveted against the shield
81
. Thus, the attaching portions
84
electrically connect the shield
81
to ground with the grounding portions
83
. However, the blocks
842
of the attaching portions
84
fail to abut against the joining plates
833
of the grounding portions
83
and to correct offsets of the joining plates
833
during assembly thereby adversely affecting coplanarity between the soldering bodies
832
of the grounding potions
83
and the PCB during soldering. Furthermore, when the attaching portion
84
is riveted without being firmly pre-positioned, it is possible that the attaching portion
84
will relax from the selected position thereby reducing assembly efficiency.
BRIEF SUMMARY OF THE INVENTION
A first object of the present invention is to provide a high density connector which is adapted to positively retain a grounding portion in position;
A second object of the present invention is to provide a high density connector which prevents attaching portions from relaxing during and after assembly to improve the assembly efficiency.
A high density electrical connector of the present invention comprises a dielectric housing defining a pair of retaining holes in lateral ends thereof, a metallic shield covering a front mating face of the housing and having a pair of holes in lateral ends thereof, a contact module assembly received in a receiving cavity of the housing, a pair of grounding portions each defining an opening, and a pair of conductive attaching portions. The holes of the shield, the retaining holes of the housing and the openings of the grounding portions are coaxial. The grounding portions each include an engaging body with the opening, a soldering body and a joining plate which connects the engaging body and the soldering body. Each of the attaching portions comprises a block with a shoulder on a lateral end thereof and a tubular part depending from the block. The shoulders engage with the joining plates and help secure the grounding portions in place. In assembly, the tubular parts of the attaching portions extend through the openings of the grounding portions, the retaining holes of the housing and the holes of the shield and are riveted against the shield. Because the tubular parts are guided by their shoulders resting against the joining plates of the grounding portions, offset from the axis of the holes, the retaining holes and the openings is avoided. Relaxation of the tubular parts during and after assembly is also prevented thereby improving assembly efficiency.
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: 5249974 (1993-10-01), Wang
patent: 5540598 (1996-07-01), Davis
patent: 5630730 (1997-05-01), Wang et al.
patent: 6012954 (2000-01-01), Wu

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