Cable end connector

Details Cable end connector Cable end connector

1999-12-17

2001-09-18

Paumen, Gary (Department: 2833)

Electrical connectors

With vitreous-type envelope

Having bayonet-coupling contact

Reexamination Certificate

active

06290542

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a cable end connector, and particularly to a cable end connector having a shield mechanism for use with a flat cable.
U.S. Pat. Nos. 3,854,787, 3,861,775, 4,767,345 and Taiwan Patent Application No. 78106838 each disclose a conventional cable end connector for connecting with a flat cable. However, none of these conventional cable end connectors provides a shield mechanism for shielding the connecting portion of the cable end connector and the flat cable. This means that the plurality of wires of the flat cable is exposed to EMI at the connecting portion, and thus signal transmission may be interfered with.
Another cable end connector is disclosed in Taiwan Patent Application No. 81201975. Although a shield member is disclosed in this invention for EMI, this shield member is just designed for round cable. A conductive material is commonly provided in a shroud at the end of a flat cable to shield against EMI when the width of the cable end connector is equal to the width of the flat cable. However, when the width of the cable end connector is wider than the width of the flat cable, the conventional invention can not provide reliable EMI protection.
Referring to
FIG. 1
, a conventional cable end connector
7
has an insulative housing
70
defining a plurality of passageways
71
for electrically connecting to corresponding wires
80
of a flat cable
8
. A conductive material
9
surrounds the end of flat cable
8
, thereby providing EMI protection. However, the width of the insulative housing
70
is wider than the width of the flat cable
8
, and the conductive material
9
can not shroud the end of the wires
80
. Therefore, signal transmission between the flat cable
8
and the cable end connector
7
may be interfered with.
Thus there is a need for an improved cable end connector to overcome the above mentioned problem.
BRIEF SUMMARY OF THE INVENTION
A main object of the present invention is to provide a cable end connector having a shield member for providing protection against EMI during signal transmission.
Another object of the present invention is to provide a shield member that can be easily assembled to a cable end connector.
To fulfill the above-mentioned objects, a cable end connector according to the present invention comprises an insulative housing and an upper and a lower shield members. The insulative housing defines a plurality of passageways for receiving a plurality of terminals therein and forms a pair of shoulders extending from lateral sides thereof. A flat cable comprises a plurality of wires for electrically connecting with corresponding terminals of the cable end connector. A conductive plastic tape shrouds the end of the flat cable for providing EMI protection. The upper and lower shield members are made from metal plate and each shield member comprises a flat body. A plurality of resilient plates respectively extends from each flat body. The flat body of each shield member forms a pair of side walls perpendicularly extending from lateral edges thereof. The side wall of the upper shield member defines a pair of holes, and the side wall of the lower shield member defines a pair of projections for locking with the holes. The flat body of each shield member forms a contacting plate respectively extending from a front edge thereof. A pair of flat ears perpendicularly extends from lateral sides of the upper shield member. A pair of stepped ears perpendicularly extends from lateral sides of the lower shield member corresponding to the flat ears of the upper shield member.
Thus, the upper and lower shield members are easily assembled to the cable end connector and then provide EMI protection during signal transmission.
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: 4971574 (1990-11-01), Garcia
patent: 5716229 (1998-02-01), Loder et al.

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