Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
2000-01-12
2001-03-27
Sircus, Brian (Department: 2839)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S439000, C439S941000
Reexamination Certificate
active
06206734
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an electrical connector, and more particularly to an electrical connector structure which can reduce the crosstalk interference generated during the signal transmission.
BACKGROUND OF THE INVENTION
Typically, in a microelectronic circuit, an electrical connector is used to connect the host machine with a plurality of peripheral equipment 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 can be divided into two categories: 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 which is used to be plugged into the network socket
10
. The network cable plug includes a housing
11
, 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
. The housing
11
is a transparent plastic.
FIG. 2
is the amplified diagram of the copper contact
13
.
Nevertheless, the conventional network cable plug has the following disadvantages:
1. The conventional network cable plug is not liable to be manufactured. When manufacturing, the copper contacts must be inserted into the slits one by one. If the copper contacts are inserted manually, it is transparently inefficient and time-consuming. However, if an automatic equipment is purchased for inserting the copper contacts automatically, the profit will be reduced thereby.
2. The conventional network cable plug can only match the TIA568A CAT-5 specification. It can not match the specification for high-speed signal transmission beyond the CAT5e specification.
3. The reason why the network cable plug can not match the specification for high-speed signal transmission beyond CAT5e is the restriction of its structure. Therefore, the so-called cross-talk interference will be generated during the signal transmission.
In order to reduce the crosstalk among transmissions, the shape, size, thickness and dimensions of the metal contact blades are manipulated to restore capacitance. Hence it is desired to develop an electrical connector for matching specifications beyond CAT5e and reducing the crosstalk interference among transmissions.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide an electrical connector which is more practical and easier to be manufactured.
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 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.
According to the present invention, the electrical connector includes a plurality of metal contact assemblies, a slit base, and a housing. The slit base has a plurality of slits for inserting therein the plurality of metal contact assemblies, and the housing has a slot for slidably receiving the slit base and a plurality of openings for respectively exposing a portion of the metal contact assemblies.
Certainly, the slit base and the housing are made of plastic.
In accordance with the present invention, 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 extending through a corresponding opening of the housing for making an electrical contact external to the housing, and a second contact part for making a connection external to the housing.
In accordance with the present invention, each of the second metal contacts further includes a third contact part extending through a corresponding opening of the housing for making an electrical contact external to the housing, and a fourth contact part for making a connection external to the housing.
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.
Alternatively, 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.
Alternatively, 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.
Alternatively, 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.
The present invention also provides a metal contact assembly used within the electrical connector, wherein the electrical connector includes a slit base having a plurality of slits and a housing having a slot for slidably receiving the slit base. The metal contact assembly includes: a first metal contact inserted in one of the slits of the slit base and has a first contact part extending through an opening of the housing for making an electrical contact external to the electrical connector, and a second contact part for making a connection external to the housing. The metal contact assembly further includes a second metal contact inserted in one of the slits adjacent to that of the first metal contact in parallel and has a third contact part extending through an opening of the housing for making an electrical contact external to the electrical connector, and a fourth contact part for making a connection external to the housing.
Both of the above metal contacts are 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 contact so as to from a desire capacitance.
Now the foregoing and other features and advantages of 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
Dan-Chief Enterprise Co., Ltd.
Dinh Phuong K T
Greer Burns & Crain Ltd.
Sircus Brian
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