CN2494043Y

CN2494043Y - Electrical connector components that reduce crosstalk

Info

Publication number: CN2494043Y
Application number: CN 01259880
Authority: CN
Inventors: 陈忠信
Original assignee: Surtec Industries Inc
Current assignee: Surtec Industries Inc
Priority date: 2001-08-23
Filing date: 2001-08-23
Publication date: 2002-05-29
Anticipated expiration: 2011-08-23

Abstract

The utility model relates to an electric connector element of reducible crosstalk includes a shell, is equipped with many metal conductors in the shell, and each adjacent metal conductor settles respectively in two parallel planes to reduce the crosstalk, and dwindles the interval of the metal conductor of coplanar, in order to increase the compensation, so can improve signal transmission quality to accord with EIA/TIA 5e type (Category 5e) standard.

Description

Can reduce the electrical connector element of cross-talk

Technical field

The utility model is relevant a kind of electrical connector element, is applied to the transmission electronic signal, particularly a kind ofly can lower cross-talk, improves transmission quality, and meets the electric connector of EIA/TIA 5e class (Category 5e) standard.

Background technology

It is very general to utilize network communicating system to transmit data in recent years, and range of application is increasingly extensive, and along with the requirement of network communicating system high-transmission efficient, the quality requirements of more than connecting line is more and more higher, along with transmission speed is more and more faster, also more and more rigorous for the quality requirements of electric connector.Generally speaking, actual network communication path is made of transmission medium and electric connector, and transmission medium can be twisted-pair feeder (Twisted Pair), coaxial cable (Coaxial Cable), optical fiber (OpticalFiber) etc., yet how many above-mentioned network communication paths still has some defectives, make signal quality worsen along with the lifting of network communicating system frequency, for example:

1. near-end crosstalk phenomenon (Near-End Cross Talk; NEXT), when two close cables (Cables) when responding to mutually,, produce cross-talk (Cross Talk) phenomenon because of galvanomagnetic effect interferes with each other.

2. impedance (Impedance), the necessary and system matches of the impedance of transmission medium could effectively transmitted signal.

3. return loss (Return Loss), because the impedance of transmission system is discontinuous, to such an extent as to produce reflex, and loss power.

4. decay (Attenuation), when signal when transmission medium is communicated by letter, can cause the decay of signal strength signal intensity and power along with distance.

And with non-twisted-pair feeder (the Unshielded Twisted Pair that covers; UPT) be example, it is by two copper cash through insulation processing, constituted with certain at interval distance and certain strand mode of revolving, generally constitute a communication link with a pair of twisted-pair feeder, or some constitutes a communication link with two pairs of twisted-pair feeders, it is a transmission medium the simplest, computer network just is to use this transmission medium, but also because the structure of its composition, cause line-to-line to produce capacitance coupling effect, and produce the cross-talk phenomenon, especially next more obvious in transmission rate (or bit rate) condition with higher, and can increase impedance, cause the quick decay of high-frequency signal.

For the foregoing reasons, (the Electronic Industries Association of U.S.'s electronics industry association; EIA) be subjected to the favor of IEEE with telecommunications industry association (TIA) standard of being released, therefore the EIA/TIA568 standard is put in the standard of 802.3u, require every numerical value of each transmission medium and connector assembly within standard,, to be classified simultaneously for conformance with standard person.As the 3rd class (Category3) is so-called voice grade circuit, uses 24AWG solid wire and 100 Ω impedances, and bandwidth can reach 10Mbps; The 4th class (Category 4) is identical with the 3rd class, but bandwidth can reach 16Mbps; The 5th class (Category 5) is identical with the 3rd class, but bandwidth can reach 100Mbps.5e class line standard is more arranged in addition, discontinuous at the impedance of transmission medium, cause producing the requirement for restriction of reflex institute loss power, that is, more be strict in the 5th class at the standard-required of return loss.

In order to solve that transmission quality increases with transmission frequency and the problem that reduces so that various solution to be arranged, as No. 4648678 patent of United States Patent (USP), is to utilize the adjacent metal lead is placed in two different planes respectively; And No. 5674093 patent of United States Patent (USP), then further improved,, more utilized the bending angle difference of adjacent metal lead except keeping original adjacent metal lead placement in the design on two planes, make the contact site of adjacent metal lead not parallel, and increase the quality of its transmission.The connecting element of this class all is the bending of folding one acute angle, the contact portion of network terminal plug is provided, and because of its inserting foot all is positioned at an integrally-built side, so when being applied to printed circuit board (PCB), it is equidistant to make connecting element to both sides puncture end, crosstalk path is not waited, and the phenomenon of both sides inequivalence is arranged.

Summary of the invention

The utility model is for solving the phenomenon that signal quality worsens along with the lifting of network communicating system frequency, and provide a kind of electrical connector element that reduces cross-talk, can improve signal transmission quality, and meet the standard of EIA/TIA 5e class (Category 5e).

According to the disclosed electrical connector element that reduces cross-talk of the utility model, be to include a shell and many strip metals lead, this shell is made of bearing, gland and loam cake, bearing is the groove that has a plurality of height alternate, many strip metals lead is installed in this groove, make the adjacent metal lead be placed in two mutual parallel planes respectively, to lower cross-talk; And conplane plain conductor is provided with a neck makes it adjacent to each other,, so can improve signal transmission quality, and meet the standard of EIA/TIA 5e class (Category 5e) to increase compensation effect.

The utility model provides a kind of electrical connector element that reduces cross-talk, comprises:

One loam cake has a network terminal socket;

One bearing has a plurality of grooves and a plurality of slotted eye, and these a plurality of grooves are for the alternate groove of height, are loaded on this loam cake bottom;

One gland has a plurality of and the corresponding groove of this bearing and a plurality of latch, utilizes this latch to be fixed in a plurality of slotted eyes of this bearing; And

Many strip metals lead, be installed in the groove of this bearing respectively, fixed by this gland, it is adjacent to each other that this many strip metals lead that is positioned at this groove of sustained height has a neck, and these many ends to plain conductor are inserted this network terminal socket, the other end is an inserting foot, and in order to be fixed in a printed circuit board (PCB), this inserting foot is to be positioned at this bearing and the equidistant position of this gland center line symmetry.

Wherein a plurality of grooves of this bearing can be the alternate groove of equidistant height.This bearing also can have a guide channel, guides this many strip metals lead and inserts in this network terminal socket.

This neck of described plain conductor can be positioned at the position that this gland is fixed.

The a plurality of grooves of this of described this bearing can lay respectively at first plane and second plane, and first plane is parallel to each other with this second plane.

The inserting foot of described this plain conductor can lay respectively at non-conterminous two sides with this network terminal socket.

The inserting foot of described this plain conductor also can lay respectively at adjacent two sides with this network terminal socket.

The beneficial effects of the utility model are: according to electric connector provided by the utility model, can improve signal transmission quality, and meet the standard of EIA/TIA 5e class (Category 5e).

Description of drawings Fig. 1 is the three-dimensional exploded view of the utility model structure.Fig. 2 is an end view of the present utility model.Fig. 3 is the schematic diagram of the utility model plain conductor.Fig. 4 is the schematic perspective view of the utility model user mode embodiment.Fig. 5 is the schematic diagram of the utility model second embodiment.

Embodiment

According to the disclosed electrical connector element that reduces cross-talk of the utility model, as shown in Figure 1, it is to include bearing 10, gland 20, loam cake 30 and eight strip metal leads (being 41,42,43,44,45,46,47 and 48 in regular turn); This bearing 10 has eight grooves 101 that height is alternate as shown in Figure 2, lay respectively at first plane 104 and second plane 105, and first plane 104 and second plane 105 are parallel to each other, can settle

plain conductor

41,42,43,44,45,46,47 and 48, make

adjacent metal lead

41,42,43,44,45,46,47 and 48 are placed in the groove of Different Plane respectively, it is

plain conductor

41,43,45,47 are placed in the groove on first plane 104, plain conductor 42,44,46,48 are placed in the groove on second plane 105, effectively lower cross-talk (Cross Talk); And make conplane

plain conductor

41,42,43,44,45,46,47 and 48 that a neck 401 be arranged, make it adjacent to each other, as shown in Figure 3, can make 41,42,43,44,45,46,47 and 48 of conplane plain conductors produce positive interference, and increase the effect (only illustrating the

plain conductor

41,43,45,47 on first plane among the figure) of compensation; Gland 20 have one with the corresponding groove 202 and a plurality of latches 201 of bearing 10, can be fixed on the slotted eye 102 of bearing 10, and

plain conductor

41,42,43,44,45,46,47 and 48 is fixed;

Plain conductor

41,42,43,44,45,46,47 and 48 all has an obtuse angle bending part, and bending part can be inserted in the guide channel 103 of bearing 10 1 ends, reinstalls in the network terminal socket 301 of loam cake 30.

Under 100MHz, measure its near-end crosstalk (NEXT), and make comparisons with prior art; Wherein plain conductor 44,45 is first to (Pair 1), and plain conductor 41,42 is second to (Pair2), and plain conductor 43,46 is the 3rd to (Pair 3), and

plain conductor

47,48 is the 4th to (Pair4); Experimental result such as following table, the effect of the utility model improvement as can be seen.

	Prior art	The utility model
	Prior art	The utility model	1-3 is right:
Test splice 1-3L	-43.26dB	-45.43dB	1-3 is right:
Test splice 1-3L	-43.26dB	-45.43dB	Test splice 1-3H	-43.83dB	-47.12dB
2-3 is right:			Test splice 1-3H	-43.83dB	-47.12dB
2-3 is right:			Test splice 2-3L	-48.71dB	-51.25dB
Test splice 2-3H	-46.62dB	-49.02dB	Test splice 2-3L	-48.71dB	-51.25dB
Test splice 2-3H	-46.62dB	-49.02dB	3-4 is right:
Test splice 3-4L	-45.98dB	-48.09dB	3-4 is right:
Test splice 3-4L	-45.98dB	-48.09dB	Test splice 3-4H	-46.01dB	-49.12dB

In addition, as shown in Figure 2, the utility model can make the inserting foot 402 of

plain conductor

41,42,43,44,45,46,47 and 48 be positioned at integrally-built mid portion by structural design; When practical application, electrical connector element is inserted a printed circuit board (PCB), and the other end of circuit board connects and punctures end, as shown in Figure 4, because of inserting foot 402 of the present utility model is positioned at bearing 10 and the equidistant position of gland 20 center lines symmetry, see also Fig. 2, thus electrical connector element to the crosstalk path at two ends is equated, and make the two ends equivalence.

Simultaneously, as shown in Figure 5, can be with the in addition bending of the upper end of the inserting foot 402 of

plain conductor

41,42,43,44,45,46,47 and 48, and make

network terminal socket

301 and 402 one-tenth 90 degree of inserting foot of electrical connector element, identical effect is also arranged.

Claims

1. An electrical connector element capable of reducing crosstalk, characterized in that it comprises:

a cover with a network terminal socket;

A seat with a plurality of grooves and a plurality of slot holes, the plurality of grooves are high and low alternate grooves, mounted on the bottom of the upper cover;

A pressing cover has a plurality of grooves corresponding to the seat and a plurality of pins, and is fixed to the slots of the seat by the pins; and

A plurality of metal wires are respectively installed in the grooves of the socket and fixed by the cover. The plurality of metal wires in the grooves at the same height have a neck close to each other, and the plurality of pairs of metal wires One end is inserted into the network terminal socket, and the other end is a plugging pin, which is located at a position symmetrically and equidistant from the center line of the bearing seat and the gland.

2 . The electrical connector component capable of reducing crosstalk as claimed in claim 1 , wherein the plurality of grooves of the socket are equally spaced high and low grooves. 3 .

3 . The electrical connector component capable of reducing crosstalk as claimed in claim 1 , wherein the socket has a guide groove for guiding the plurality of metal wires into the network terminal socket. 4 .

4. The electrical connector component capable of reducing crosstalk as claimed in claim 1, wherein the number of the metal wires is eight.

5 . The electrical connector component capable of reducing crosstalk as claimed in claim 1 , wherein the neck portion of the metal wire is located at the fixed portion of the gland. 6 .

6. The electrical connector component capable of reducing crosstalk as claimed in claim 1, wherein the plurality of grooves of the seat are respectively located on a first plane and a second plane, and the first plane is in line with the second plane. The two planes are parallel to each other.

7. The electrical connector component capable of reducing crosstalk as claimed in claim 1, wherein the pins of the metal wire are located on two sides not adjacent to the network terminal socket respectively.

8 . The electrical connector component capable of reducing crosstalk as claimed in claim 1 , wherein the pins of the metal wire are respectively located on two adjacent sides of the network terminal socket.