Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
2001-01-23
2001-11-06
Sircus, Brian (Department: 2839)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
Reexamination Certificate
active
06312292
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an electrical connector, and more particularly to a low crosstalk electrical connector, which applics to reduce the crosstalk interference taken place in the signal transmission process.
DESCRIPTION OF THE PRIOR ART
Typically, in a microelectronic circuit, an electrical connector is applied to connect the host machine with a plurality of peripheral devices for transmitting electric signals. Among the miscellaneous electrical connectors, a network connector, however, is particularly applied in the field involved with the network communication. The network connector roughly falls into a network socket and a network cable plug, wherein the latter is directly related to the quality of the signal transmission. Please refer to FIG.
1
and
FIG. 2
showing a network cable plug adapted to be plugged into the network socket
10
. The network cable plug comprises a housing, an auxiliary piece
12
, and a plurality of copper contacts
13
. Each of the copper contacts
13
includes a contact part
131
and a connection part
132
. The contact part
131
is used to contact with the pins embedded in the socket
10
and the connection part
132
is used to couple with a cable tightly. The auxiliary piece
12
is used for assisting the housing
11
to be plugged in and drawn out the network socket
10
. Preferably, the housing
11
is made up of a transparent plastic.
FIG. 2
shows the amplified diagram of the copper contact
13
, wherein the copper contact
13
includes a contact part
131
and a connection part
132
as previously discussed.
Nonetheless, there are several disadvantages existed in the prior art network cable plug. When manufacturing the network cable plug, the copper contacts must be inserted into the slits one by one. If the copper contacts are inserted manually, it is obviously inefficient and time-consuming. However, if an automatic equipment are used to take place of manpower for inserting the copper contacts, the profit will be reduced thereby. In addition, the conventional network cable plug can only match the TIA568A CAT-5 specification. It can not match tile specification for ligh-speed signal transmission beyond the CAT5e specification due to the restriction of its structure. As a result, the crosstalk interference will take place in the signal transmission process.
For the purpose of reducing the crosstalk interference generated during the signal transmissions process, the shape, size, thickness and dimensions of the metal contact blades are manipulated to restore capacitance. Hence, there is a tendency for the applicant to develop an electrical connector which can match the specifications beyond CAT5e and reduce the crosstalk interference among signal transmissions.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide an electrical connector which can be manufactured with a simpler process and with a lower cost.
Another object of the present invention is to provide an electrical connector which can match the specification for the high-speed signal transmission beyond CAT5e specification.
Another further object of the present invention is to provide a metal contact assembly used within an electrical connector.
Another yet object of the present invention is to provide an electrical connector which can reduce the crosstalk interference Generated during the signal transmission process.
According to the first embodiment of the present invention, the electrical connector includes a plurality of metal contact assemblies and a connector entity. The connector entity includes a plurality of slits for inserting therein the plurality of metal contact assemblies, and includes a plurality of openings in order that each of the metal contact assemblies makes an electric contact outside the connector entity thereof.
Certainly, the connector entity is made of plastic, and each of the metal contact assemblies includes a first metal contact and a corresponding second metal contact, wherein each of the metal contact assemblies are inserted into the slits in turn and in parallel so that the mutual arrangement of the first metal contacts and the second metal contacts is interlaced.
In accordance with the present invention, each of the first metal contacts further includes a first contact part protruding from a corresponding opening of the connector entity for making an electric contact outside the connector entity, and a second contact part f or making an electrical connection outside the connector entity.
Similarly, each of the second metal contacts further includes a third contact part protruding from a corresponding opening of the connector entity for making an electric contact outside the connector entity, and a fourth contact part for making an electrical connection outside the connector entity.
Furthermore, each of the first metal contacts further includes a plurality of teeth extending upwardly from the bottom edge of the first metal contact and each of the second metal contacts further includes a corresponding plurality of teeth extending downwardly from the top edge of the second metal contact so as to from a desired capacitance.
The structure of second contact part and the fourth contact part of the metal contact may be of a variety of types depending on the design specification. As an example, generally both of the second contact part and the fourth contact part are a pin for welding on a printed circuit board (PCB). Alternatively, both of the second contact part and the fourth contact part are a two-prong pin for displacing the wire insulation in order to electrically connect with the cable. In accordance with the third embodiments of the present invention, both of the second contact part and the fourth contact part are a three-prong pin for piercing a cable and electrically connecting with the cable. According to the fourth embodiment of the present invention, both of the second contact part and the fourth contact part are a semicircle for fixing a cord by means of squeezing to electrically connect with the cable.
Preferably, the metal contact assemblies are made of copper.
In accordance with another aspect of the present invention, a metal contact assembly applicable to be used within an electrical connector such that the crosstalk interference taken place in the signal transmission process is reduce is provided, wherein the electrical connector includes a connector entity including a plurality of slits. The metal contact assembly includes a first metal contact inserted in one of the slits of the connector entity and having a first contact part protruding from an opening of the connector entity for making electric contact outside the connector entity and a second contact part for making an electrical connection outside the connector entity, and a second metal contact inserted in one of the slits neighboring to that of the first metal contact in parallel and having a third contact part protruding from an opening of the connector entity for making electric contact outside the connector entity, and a fourth contact part for making an electrical connection outside the connector entity. Remarkably, the metal contact assembly is characterized in that each of the first metal contacts include a plurality of teeth extending upwardly from the bottom edge of the first metal contacts and each of the second metal contacts includes a corresponding plurality of teeth extending downwardly from the top edge of the second metal contacts so as to from a desired capacitance for reducing the crosstalk interference generated during the signal transmission process. Now the present invention will be more clearly understood through the following descriptions with reference to the accompanying drawings, in which:
REFERENCES:
patent: 3951494 (1976-04-01), Romine
patent: 5772454 (1998-06-01), Long, Jr.
patent: 6042427 (2000-03-01), Adriaenssens et al.
patent: 6206734 (2001-03-01), Liu
Dan-Chief Enterprise Co.
Dinh Phuong K T
Sircus Brian
Volpe and Koenig P.C.
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