Stacked modular jack assembly

Details Stacked modular jack assembly Stacked modular jack assembly

1999-07-20

2001-06-26

Abrams, Neil (Department: 2839)

Electrical connectors

With supporting means for coupling part

Supporting plural, independent coupling parts

Reexamination Certificate

active

06250957

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to an electrical connector, and particularly to a stacked modular jack assembly.
Stacked modular jacks are well known in the electronics field. U.S. Pat. Nos. 4,703,991; 4,202,593; 4,669,595; 4,786,259; 4,618,207 and Taiwan Patent Application No. 83200722 disclose such connectors. A conventional stacked modular jack generally comprises a dielectric housing, a plurality of first and second conductive contacts, first and second individual inserts and a shield covering the housing. The first and second contacts are secured to the housing by the first and second inserts whereby the modular degree of the jack is reduced and manufacture is complicated. In addition, the first and second contacts are closely positioned in the housing and no protecting means is provided; thus, cross talk occurs therebetween during high speed signal transmission through the first and second contacts. Hence, an improved electrical connector is required to overcome the disadvantages of the prior art.
BRIEF SUMMARY OF THE INVENTION
A first object of the present invention is to provide a stacked modular jack assembly having a single insert for securing both first and second contacts to a dielectric housing.
A second object of the present invention is to provide a stacked modular jack assembly having a grounding plate positioned between the first and second contacts to prevent cross talk therebetween.
In order to achieve the purposes stated above, a stacked modular jack assembly comprises a dielectric housing, a plurality of first and second contacts, an insert retaining the first and second contacts in the housing, a grounding plate for preventing cross talk between the first and second contacts and a shield covering over the housing. The housing forms a rearward extending projection having a plurality of channels on a top face thereof and a slit for receiving the plate, a pair of guiding recesses and a pair of latches on a rear portion thereof for engaging with the insert. The insert is a Z-shaped component comprising a body, a tongue projecting from a top edge of the body in one direction and a tail projecting from a bottom edge of the body in an opposite direction. The body forms a vertical slot for receiving the plate and a pair of wedges on opposite sidewalls thereof for securing the insert to the housing. The tongue forms a plurality of level passages in a top face thereof and a pair of guiding bars projecting from opposite edges thereof. The tail forms several first notches recessing a distance toward the body and several second notches recessing a shallower distance toward the body. The first and second notches are alternately arranged. The insert further forms a plurality of barriers extending from a bottom face of the tongue and a front face of the body. The grounding plate comprises a cover, an interfering portion perpendicularly extending from an edge of the cover and a soldering portion extending from the interfering portion. The interfering portion forms a plurality of barbs on opposite edges thereof.
In assembly, the second contacts are received in the insert with retaining portions thereof being received in the corresponding passages of the insert and free ends thereof being separated from each other by the barriers for preventing contact therebetween. The grounding plate is assembled to the insert with the barbs of the interfering portion interfering with a periphery of the slot of the insert. Then the insert together with the second contacts and the plate is smoothly assembled to the housing and guided by the bars thereof sliding along the recesses of the housing and engaged with the housing by the wedges thereof coupling with the latches of the housing. The first contacts are received in the housing with retaining portions thereof received in the corresponding channels of the insert and mounting portions received in the first and second notches in two rows. The cover is received in the slit of the housing.


REFERENCES:
patent: 4653837 (1987-03-01), Philiipson et al.
patent: 5647765 (1997-07-01), Haas et al.
patent: 5647767 (1997-07-01), Scheer et al.
patent: 5766043 (1998-06-01), Talend
patent: 5989069 (1999-11-01), Tan et al.
patent: 6012954 (2000-01-01), Wu

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