CN2494052Y

CN2494052Y - Electric connector capable of reducing echo loss

Info

Publication number: CN2494052Y
Application number: CN01259453U
Authority: CN
Inventors: 陈忠信
Original assignee: Surtec Industries Inc
Current assignee: Surtec Industries Inc
Priority date: 2001-08-27
Filing date: 2001-08-27
Publication date: 2002-05-29
Anticipated expiration: 2011-08-27

Abstract

An electrical connector which can reduce the echo loss comprises a stent, a conducting wire seat, a contacting shrapnel and a pedestal plate. The conducting wire seat and the pedestal plate clips and fixes three pairs of contacting spring sheets. The other pair of contacting spring sheets is isolated on the other side of the pedestal plate and is above the center pair of the three pairs of contacting spring sheets. The structure of the utility model can be conveniently assembled and can improve the transmission quality and accords with the EIA/TLA the 5e category (Category 5e) standard.

Description

Can reduce the electric connector of return loss

Technical field

The utility model is a kind of electric connector, is applied to the transmission electronic signal, particularly a kind of electric connector that meets EIA/TIA 5e class (Category 5e) standard.

Background technology

Along with the requirement of network communication system high-transmission efficient, the quality requirement of more than connecting line is more and more higher, and is along with transmission speed is more and more faster, also more and more rigorous for the quality requirement of electric connector.Generally speaking, actual network communication path is to be made of transmission medium and electric connector etc., 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 communication system frequency, for example:

(1) 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.

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

(3) return loss (Return Loss): because the impedance of transmission system is discontinuous, so that produces reflex, and loss power.

And with non-multiple twin (the Unshielded Twisted Pair that covers; DTP) line is an 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 two handsome lines, it is the simplest a kind of transmission medium, 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, produce cross-talk (Cross Talk) phenomenon, especially more obvious under 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 EIA; EIA) be subjected to the favor of IEEE with institute of telecommunications industry association (TIA) release standard, therefore the EIA/TIA standard is put into it in the standard of 802.3u, require every numerical value of each transmission medium and coupling assembling within standard,, to be classified simultaneously for meeting each standard person.

For example the 3rd class (Category 3) is so-called voice grade circuit, uses 24AWG solid wire and 100 Ω impedances, and bandwidth can reach 16Mbps: the 4th class (Category 4) is identical with the 3rd class (Category 3), but bandwidth can reach 20MbpS; The 5th class (Category 5) is same with the 3rd class (Category 3), but bandwidth can reach 100Mbps.5e class (Category 5e) line standard is more arranged, discontinuous at the impedance of transmission medium, cause producing the requirement for restriction of reflex institute loss power, that is, more be strict in Category5 at the standard-required of return loss (Return Loss).Shown in table 1 and table 2: be illustrated respectively under the situation of 23 ℃ ± 3 ℃ of room temperatures EIA/TIA 5e class (Category 5e) standard scale of the return loss (Return Loss) that cable (Cable) and connection hardware are equipped with:

Frequency (MHz)	Return loss (db)
Frequency (MHz)	Return loss (db)	1≤f＜10 10≤f＜20 20≤f≤100	19+3×LOG(f) 22 22-7×LOG(f/20)

Table 1

Frequency (MHz)	Return loss (db)
Frequency (MHz)	Return loss (db)	1≤f＜25 25≤f≤100	30 18-20×LOG(f/100)

Table 2

As shown in Figure 1, be three-dimensional exploded view for existing modular electric connector, comprise three parts such as pedestal 10, lead seat 12 and base plate 13.One end of pedestal 10 is provided with signal wire slots seat 16, the other end is provided with network terminal socket 18, be provided with a set of contact shell fragment 20 that grips by lead seat 12 and base 13 in an end of signal wire slots seat 16, be installed in jointly in the signal wire slots seat 16, and with pedestal 10 mutually embedding become one.

Contact flat spring 20 has the inserting foot 22 of multiple row, the tail end of each inserting foot 22 forms the contact of network terminal socket 18 inside with the acute angle bending, be provided with slotted eye 24 in each inserting foot 22, can be for being placed on projection 26, the front end of each inserting foot 22 is provided with bending section 28 again, is provided with the heart yearn slot of tool loudspeaker opening in each bending section 28, and the bottom of groove is provided with a circular fixing hole, so that cable core is inserted in each heart yearn slot, and in bottom land end fixing hole, locate.

And the front end of lead seat 12 is provided with a plurality of convex sections 121, form insulation tank 122 between per two convex sections 121, each inserting foot 22 front end bending section 28 of contact flat spring 20 are in each insulation tank 122 is inserted in lead seat 12 bottoms, again by bottom base panel 13 and lead seat 12 both clamping contact flat springs 20, be embedded in mutually in the signal wire slots seat 16 of pedestal 10 jointly, contact flat spring 20 is fixed closely.

Bedplate 13 has the convex surface plate of a plurality of projections 26, is placed in the projection 26 for set slotted eye 24 on each inserting foot 22 of contact flat spring 20, with fixing contact flat spring 20.

By as can be seen above, existing electric connector is constituted with inserting foot 22 by wire guide plate 12, base plate 13, wherein inserting foot 22 is to be distributed in same plane, one end connects the signal source circuit with the acute angle bending, the other end bending stube cable heart yearn that makes progress is adjusted signal quality by the branch of inserting foot 22.

According to No. the 089201829th, TaiWan, China number of patent application that the inventor proposed, it is to utilize two strip metal leads to run through this base plate, lead perforation from plate face top runs through this base plate, extends to plate face below again, and exposes first section lead and second section lead respectively in plate face top; With lead seat clamping contact flat spring the time, contact the 3rd inserting foot and the 6th inserting foot respectively, and each comfortable plate face below cabling directly over the 4th inserting foot of contact flat spring and the 5th inserting foot, extend to the 3rd section lead and the 4th section lead of plate face top, contact with the end of the 6th inserting foot with the 3rd inserting foot of contact flat spring respectively near the bending of tail end acute angle.Though it can reach reduction return loss, improve the effect of transmission quality, this two strip metals lead must pass base plate and in addition bending in two ends, and is quite inconvenient in processing.

Summary of the invention

The utility model discloses the electric connector that a kind of tool reduces return loss, and its purpose is to simplify processing, and when solving the network communication system transmission signals, decay (Attenuation), near-end crosstalk phenomenon (Near-End CrossTalk; NEXT) with the problem of return loss (Return Loss), to meet the standard of EIA/TIA 5e class (Category 5e).

The utility model is to include a pedestal, a lead seat, contact flat spring and a bedplate; One end of this pedestal is provided with the signal wire slots seat, the other end is provided with network terminal socket, by lead seat and the bedplate three pairs of contact flat springs that are clamped, a pair of in addition contact flat spring isolates from the opposite side of bedplate, and be positioned at three pairs of contact flat springs central authorities a pair of directly over, again it is installed in the signal wire slots seat jointly, and with pedestal mutually embedding become one; Can solve signal quality and worsen the problems referred to above that produced along with the lifting of network communication system frequency.

The technical solution of the utility model is: it comprises:

One lead seat has eight insulation tanks;

One bedplate is fixed in a side of this lead seat;

One pedestal, an end are provided with a signal wire slots seat, and the other end is provided with a network terminal socket, and this lead seat and this bedplate fixing after, be installed in this signal wire slots seat jointly; And

Eight contact flat springs, No. fourth, fifth is first pair, and first and second number is second pair, and the 3rd, No. six is the 3rd pair, seven, No. eight is the 4th pair, wherein first pair of this contact flat spring installed a side of this bedplate, and its excess-three is isolated from this bedplate opposite side to this contact flat spring, is fixed by this bedplate and this lead seat clamping, and this contact flat spring one end has a heart yearn slot, be loaded on this insulation tank, in order to fixing heart yearn, the other end is inserted this network terminal socket with the acute angle bending.

Wherein this first and third, six, No. eight contact flat spring can have a neck adjacent to each other.

Described this bedplate has a groove, ccontaining this first pair of contact flat spring.

Described this is installed in this first pair of contact flat spring, can be across this bedplate, lay respectively at the 3rd pair of contact flat spring directly over.

The beneficial effects of the utility model are: the utility model not only can improve transmission quality, reaches the standard of EIA/TIA 5e class (Category 5e), and has exempted time-consuming plain conductor bending action, significantly enhances productivity.

According to the electric connector of tool reduction return loss provided by the utility model, not only simple in structure, convenient processing assembling; And when solving via the network communication system transmission signals, decay (Attenuation), near-end crosstalk phenomenon (Near-End Cross Talk; NEXT) with the problem of return loss (Return Loss), to meet the standard of EIA/TIA 5e class (Category 5e).

Description of drawings

Fig. 1 is the three-dimensional exploded view of existing modular electric connector;

Fig. 2 is the three-dimensional exploded view of the utility model modular electric connector;

Fig. 3 is the vertical view of bedplate of the present utility model;

Fig. 4 is the schematic diagram of the utility model contact flat spring neck;

Fig. 5 is the partial enlarged drawing of heart yearn pin of the present utility model.

Embodiment

Please refer to shown in Figure 2ly, the structure of the electric connector that the utility model is carried comprises a pedestal 10, a lead seat 15, a bedplate 14 and contact flat spring 41,42,43,44,45,46,47 and 48; One end of this pedestal 10 is provided with signal wire slots seat 16, the other end is provided with network terminal socket 18, lead seat 15 combines contact flat spring 41,42,43,44,45,46,47 and 48 with bedplate 14, be installed in jointly in this signal wire slots seat 16, and with pedestal 10 mutually embedding become one.

Contact flat spring 41,42,43,44,45,46,47 and 48 all include an inserting foot 401, the tail end of this each inserting foot 401 is bent to form the contact site of network terminal socket 18 inside with acute angle, wherein contact flat spring 42,43,46,47 inserting foot 401 is provided with slotted eye 402, can be for being placed on projection 141, the front end of each inserting foot 401 is provided with bending segment 403 again, be provided with the heart yearn slot 404 (as shown in Figure 5) of tool loudspeaker opening in each bending segment 403, the bottom of groove is provided with a circular fixing hole 405, with so that heart yearn is inserted in each heart yearn slot 404, and in bottom land end fixing hole 405 location.

The front end of this lead seat 15 is provided with a plurality of convex sections 151, form insulation tank 152 between per two convex sections 151, this contact flat spring 41,42,43,44,45,46,47 and 48 is in this insulation tank 152 is inserted respectively in these lead seat 15 bottoms with its each inserting foot 401 front end bending segments 403, be embedded in mutually in the signal wire slots seat 16 of pedestal 10 jointly, contact flat spring 41,42,43,44,45,46,47 and 48 is fixed closely.

Circuit with EIA/TIA T568B is an example, wherein contact flat spring the 44, the 45th, for first to (Pair 1), contact flat spring the 41, the 42nd, for second to (Pair 2), contact flat spring the 43, the 46th, for the 3rd to (Pair 3), contact flat spring the 47, the 48th is for the 4th to (Pair 4).

For reducing return loss (Return Loss) and meeting Category 5e line standard, the utility model design is with first pair of contact flat spring 44,45 are installed in the groove 142 of bedplate 14, as shown in Figure 3, and shell fragment 41 is touched in its excess-three butt joint, 42,43,46,47,48 are still gripped by bedplate 14 and lead seat 15, because of first pair of contact flat spring 44,45 are installed in the top of bedplate 14, so can be with the 3rd pair of contact flat spring 43,46 is inwardly concentrated close, and minimizing return loss, simultaneously as shown in Figure 4, with contact flat spring 41,43,46,48 designs, one neck 406 can make contact flat spring 41,43,46,48 increase compensation effects and improve transmission quality more.

Claims

1. electric connector that can reduce return loss is to comprise:

One lead seat has eight insulation tanks;

One bedplate is fixed in a side of this lead seat;

Eight contact flat springs, No. fourth, fifth is first pair, first and second number is second pair, and the 3rd, No. six is the 3rd pair, and the 7th, No. eight is the 4th pair, wherein first pair of this contact flat spring installed a side of this bedplate, its excess-three is isolated from this bedplate opposite side to this contact flat spring, fixed by this bedplate and this lead seat clamping, and this contact flat spring one end has a heart yearn slot, be loaded on this insulation tank, the other end is inserted this network terminal socket with the acute angle bending.

2. tool as claimed in claim 1 reduces the electric connector of return loss, it is characterized in that wherein this first and third, six, No. eight contact flat spring is to have a neck adjacent to each other.

3. tool as claimed in claim 1 reduces the electric connector of return loss, it is characterized in that wherein this bedplate is that a groove is arranged, ccontaining this first pair of contact flat spring.

4. tool as claimed in claim 1 reduces the electric connector of return loss, it is characterized in that wherein this is installed in this first pair of contact flat spring, is across this bedplate, lay respectively at the 3rd pair of contact flat spring directly over.