CN210040756U - Anti-electromagnetic interference optimized arrangement circuit board module of RJ45 socket reed pair - Google Patents
Anti-electromagnetic interference optimized arrangement circuit board module of RJ45 socket reed pair Download PDFInfo
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- CN210040756U CN210040756U CN201920383191.2U CN201920383191U CN210040756U CN 210040756 U CN210040756 U CN 210040756U CN 201920383191 U CN201920383191 U CN 201920383191U CN 210040756 U CN210040756 U CN 210040756U
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Abstract
The anti-electromagnetic interference optimized layout circuit board module of the RJ45 socket reed wire pair is characterized in that four sets of wire pairs including a wire pair I (1), a wire pair II (2), a wire pair III (3) and a wire pair IV (4) are arranged on a printed board (5) in pairs, electromagnetic interference generated in two reeds of any one wire pair is counteracted by electromagnetic waves received by the other pair of reeds, theoretically, induced electromotive force is zero, and therefore interference is reduced to the maximum degree. Because the reed is arranged in bilateral symmetry, when two adjacent modules are arranged in parallel, the reed mode of the adjacent line pair of the two modules is consistent with that of the reed in the same module, and the interference generated between the two pairs of reeds is also nearly zero. Unnecessary electromagnetic interference can be suppressed to the maximum extent, mutual interference among the wire pairs is reduced in the module, and meanwhile, when a non-shielding wiring scheme is adopted, the generation of external crosstalk can be reduced as much as possible, and the external crosstalk brought by the reeds can be minimized.
Description
Technical Field
The utility model relates to a wiring reed installation technique, especially RJ45 socket reed pair anti-electromagnetic interference optimization arrange circuit board module on the integrated wiring RJ45 module.
Background
The integrated wiring is a modular and extremely flexible information transmission channel in a building or between building groups. Integrated wiring through which voice devices, data devices, switching devices, and various control devices can be connected to an information management system, and these devices can be connected to an external communication network. It also includes all cables and associated connection components between the connection points of the network or telecommunication lines outside the building and the application system equipment. The integrated wiring is composed of components of different series and specifications, including: transmission media, associated connection hardware such as patch panels, connectors, sockets, plugs, adapters, and electrical protection equipment. These components can be used to construct a variety of subsystems, each having its own specific purpose, not only for ease of implementation, but also for smooth upgrades as the demand changes.
RJ45 is a kind of information socket in the comprehensive wiring system, i.e. a kind of communication leading-out terminal connector, the connector is composed of a connector, a crystal head plug and a socket module, the plug has 8 grooves and 8 contacts. The connector formed by the two components is connected between the wires so as to realize the electrical continuity of the wires. The core of the RJ45 module is a modular jack. The gold plated wire or jack can maintain a stable and reliable electrical connection with the modular jack dome. The electrical contact is further enhanced with the insertion of the plug due to the friction between the spring and the receptacle. The jack body design employs an integral locking mechanism such that when the modular plug is inserted, maximum pull-out strength is produced outside the interface of the plug and jack. The wiring module on the RJ45 module is connected with the twisted pair through a U-shaped wiring slot, and the locking spring piece can fix the RJ45 module on an information outlet device such as a panel. The RJ45 crystal head is required to have good conduction performance; the gold plating thickness of the contact three-fork reed is 50 mu m, the contact three-fork reed meets the super 5-class transmission standard and meets the line sequences of T568A and T568B; has the functions of preventing looseness, plugging and self-locking, and the like.
With the development of comprehensive wiring, copper cable wiring in the field is rapidly developed from 3 types, 5 types and over 5 types to six types, over six types, 7 types and 8 types, and along with the improvement of bandwidth, the connection technology of a module and a cable increasingly becomes a bottleneck, a connection reed is inevitably required to be adopted in connection, and the connection reed can also become one of the sources of electromagnetic interference.
Electric signals are transmitted in the network cable, a magnetic field can be generated near the high-power electric appliance, the magnetic field can act on the network cable nearby to generate a new electric field, and the situation that the signals are weakened or lost can occur naturally. It should be noted that, in addition to avoiding interference sources, the connection mode of the network cable joints is also important, and whether the 568A or 568B standard is adopted to manufacture the network cable, it is necessary to ensure that 1 and 2, 3 and 6 are two pairs of core wires, so that the network cable has strong interference resistance. When structured wiring is carried out, the route of the network cable is designed in advance and is far away from large radiation equipment and a large interference source.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circuit board module is arranged in anti-electromagnetic interference optimization to RJ45 socket reed pair, reduces the mutual electromagnetic interference because the termination reed produces between the different wire pairs in same cable to and close on the line external crosstalk that the termination reed of cable termination intermodule produced.
The purpose of the utility model is realized by the following technical measures: the device comprises a first wire pair, a second wire pair, a third wire pair, a fourth wire pair and a printed board; four groups of line pairs including a line pair I, a line pair II, a line pair III and a line pair IV are arranged on the printed board, and each group of line pairs comprises a pair of reeds; a pair of reeds of each group of line pairs are parallel to each other and have the same distance; the printed circuit board is provided with a first reference line and a second vertical reference line, the first reference line and the second reference line are perpendicular to each other and cross the central point of the printed circuit board, four groups of line pairs are respectively arranged at four corners of the printed circuit board, the central connecting lines of the first reed and the second reed of the line pair at the upper left corner and the central connecting lines of the third reed and the second reed of the line pair at the lower right corner are both parallel to the first reference line, and the central connecting lines of the second reed of the line pair at the upper right corner and the central connecting lines of the second reed of the line pair at the.
Particularly, the planes of eight reeds of the first line pair, the second line pair, the third line pair and the fourth line pair respectively form 45-degree or 135-degree included angles with the first datum line or the second datum line.
Particularly, the connecting lines of the centers of the two reeds in the same line pair of the line pair I, the line pair II, the line pair III and the line pair IV are parallel or vertical to the datum line I or the datum line II; meanwhile, the connecting lines of the two reeds of the adjacent line pairs are mutually vertical; the two reeds in the same line pair are parallel to each other, and the vertical projection distance between the parallel lines where the two reeds in the same line pair are located is larger than the diameter of a communication cable core wire.
In particular, the extension line of the connecting line of one of the two pairs of reeds of the adjacent pair passes through the center of the connecting line of the other pair of reeds.
In particular, the printed board is mounted on a module of a 24-port distribution frame, and at least one of the first reference line or the second reference line is parallel to a module central connecting line of the 24-port distribution frame.
The utility model discloses an advantage and effect: in the same cable, reeds adjacent to the line pair are arranged pairwise, electromagnetic interference generated in two reeds of any line pair is counteracted by electromagnetic waves received by the other pair of reeds, and theoretically, the induced electromotive force is zero, so that the interference is reduced to the maximum degree. The reed arrangement is bilaterally symmetrical, so when two adjacent modules are arranged in parallel, the reed mode of the adjacent line pair of the two modules is consistent with that of the reed in the same module, and the interference generated between the two pairs of reeds is also nearly zero. The crosstalk between the pairs in the module can be reduced to the greatest extent. Unnecessary electromagnetic interference can be suppressed to the maximum extent, mutual interference among the wire pairs is reduced in the module, and meanwhile, when a non-shielding wiring scheme is adopted, the generation of external crosstalk can be reduced as much as possible, and the external crosstalk brought by the reeds can be minimized.
Drawings
Fig. 1 is a schematic plan view of the arrangement structure of the central line to the reed in embodiment 1 of the present invention.
Fig. 2 is a schematic perspective view of the arrangement structure of the center line pair spring leaf in embodiment 1 of the present invention.
The reference numerals include:
1-line pair one, 2-line pair two, 3-line pair three, 4-line pair four, 5-printed board, 6-datum line one, 7-datum line two, 8-reed.
Detailed Description
The utility model discloses the principle lies in, RJ 45's performance index includes decay, near-end crosstalk, insertion loss, return loss and distal end crosstalk etc.. Specification of performance of RJ 45: the contact resistance is 2.5m omega, the insulation resistance is 1000m omega, and the breakdown and arcing phenomena are avoided within one minute when the dielectric strength is DC1000V (AC 700V); the surface of the clamping spring is plated with gold or silver, and the diameter of the wire which can be connected is 0.4 mm-0.6 mm; the plug and the socket can be repeatedly plugged and unplugged for not less than 750 times; the 8-wire contact pins are gold plated 509 (inch). Among these performance criteria requirements, crosstalk is an important factor to be considered in design, and in order to achieve better transmission performance of the whole link, a crosstalk cancellation technique is often adopted in the jack, and the crosstalk cancellation technique can generate crosstalk signals with the same magnitude and opposite polarity as the interference introduced from the plug to cancel the crosstalk. If crosstalk interference introduced by the modular plug is denoted by "+ +++" and the opposite crosstalk generated by the jack is denoted by "- - -". When the two crosstalk signals have equal magnitudes and opposite polarities, the magnitude of the total coupled crosstalk interference signal is zero. The reed arrangement scheme which reduces the interference as much as possible can restrain unnecessary electromagnetic interference to the maximum extent.
The RJ45 socket module generally consists of three parts, namely a contact spring connected with a crystal head, a wire clamping spring connected with a cable, and a printed board; wherein:
the contact spring plate connected with the crystal head is generally composed of eight gilded special-shaped spring plates, and the electromagnetic interference caused by the arrangement scheme can also greatly influence the transmission and communication performance of the module.
The card line reed of being connected with the cable is at the in-process of module transmission high frequency signal, and the unreasonable range of its body also can cause the response electromotive force, forms additional interference, and especially the influence in the aspect of crosstalking is very obvious, the utility model provides a range scheme, can furthest overcome.
The printed board is used for fixing the structures of the two reeds, and simultaneously, the residual induced electromotive force of the two reeds can be balanced and counteracted by utilizing the wiring technology of the circuit board.
The utility model discloses a: line pair one 1, line pair two 2, line pair three 3, line pair four 4 and printed board 5.
The present invention will be further explained with reference to the drawings and examples.
Example 1: as shown in fig. 1, four pairs, i.e., a pair one 1, a pair two 2, a pair three 3 and a pair four 4, are mounted on a printed board 5, and each pair includes a pair of reeds 8; a pair of reeds 8 of each group of line pairs are parallel to each other and have the same distance; a first datum line 6 and a second vertical datum line 7 are arranged on a printed board 5, the first datum line 6 and the second datum line 7 are perpendicular to each other and intersect at the center point of the printed board 5, four groups of line pairs are respectively arranged at four corners of the printed board 5, the center connecting lines of a first reed 8 in a first line pair at the upper left corner and two reeds 8 in a third reed 8 in a second line pair at the lower right corner are both parallel to the first datum line 6, and the center connecting lines of two reeds 8 in a second reed 2 in the upper right corner and the center connecting lines of two reeds 8 in a fourth reed 4 in the lower left corner are both parallel to the second datum line.
In the above description, the planes of the eight reeds 8 of the pair one 1, the pair two 2, the pair three 3 and the pair four 4 respectively have an included angle of 45 degrees or 135 degrees with the reference line one 6 or the reference line two 7.
In the above, the connecting lines of the centers of the two reeds 8 in the same line pair of the line pair one 1, the line pair two 2, the line pair three 3 and the line pair four 4 are all parallel or perpendicular to the reference line one 6 or the reference line two 7; meanwhile, the connecting lines of the two reeds 8 of the adjacent line pairs are vertical to each other; the two reeds 8 in the same wire pair are parallel to each other, and the vertical projection distance between the parallel lines of the two reeds 8 in the same wire pair is larger than the diameter of the core wire of the communication cable.
In the two pairs of reeds 8 of the adjacent pairs, the extension line of the connecting line of one pair passes through the center of the connecting line of the other pair of reeds 8.
In the foregoing, the printed board 5 is mounted on a module of a 24-port distribution frame, and at least one of the first reference line 6 or the second reference line 7 is parallel to a module center connection line of the 24-port distribution frame.
In the embodiment of the utility model provides an in, printing board 5 is stereoplasm or flexible material. Each set of line pairs is connected to any one pair of lines of the data communication cable. The two reeds 8 of the first pair 1 can be equidistant from the two reeds 8 of the second pair 2 through the arranged pairs and reeds 8, and corresponding points can be found on the two reeds 8 of the second pair 2 at any point on the reeds 8 of the first pair 1; similarly, the reeds of pair two 2, the reeds of pair three 3, and the reeds of pair four 4 can all maintain equidistant association.
In the embodiment of the utility model provides an in, the distribution frame is used for end user line or trunk line to can allocate the equipment of connecting to them. The distribution frame is the most important component in the management subsystem, and is a hub for realizing cross connection of two subsystems, namely a vertical trunk and horizontal wiring. Distribution frames are typically mounted on cabinets or walls. By installing accessories, the distribution frame can meet the requirements of UTP, STP, coaxial cable, optical fiber and audio and video in a whole line. Common distribution frames used in network engineering are twisted pair distribution frames and optical fiber distribution frames. The main distribution frame and the intermediate distribution frame are divided into two categories according to different use places and purposes. 24-port network module distributing frame, one end is crystal head of RJ45, another end is duck bill head, RJ45 head is connected to distributing frame, and the duck bill head is connected to 110 distributing frame.
The embodiment of the present invention provides an interference avoidance principle explained by analyzing electromagnetic interference of the pair one 1 and the pair two 2 as follows: when the first wire pair 1 transmits signals, the distances from the pair of reeds 8 of the first wire pair 1 to the two reeds 8 of the second wire pair 2 are equal, and corresponding points can be found on the two reeds 8 of the second wire pair 2, so that the interference generated by the two reeds 8 of the second wire pair 2 is completely the same, and the interference can be counteracted because the signal transmission of the comprehensive wiring adopts a differential mode; when the pair two 2 transmits signals, because the distances from the pair of reeds 8 of the pair one 1 to the two reeds 8 of the pair two 2 are equal, corresponding points can be found on the two reeds 8 of the pair two 2, so that a pair of completely opposite interferences can be generated on the pair of reeds 8 of the pair one 1 respectively and are mutually counteracted; the same applies to all other pairs. When a 24-module distribution frame is arranged in 1U, assuming that a reference line I16 is parallel to a central connecting line of 24 modules, the reed arrangement of each module and a module beside the module is consistent with the condition, so the arrangement scheme can be completely used for reducing the influence of off-line crosstalk.
Claims (6)
- The anti-electromagnetic interference optimized arrangement circuit board module of the RJ45 socket reed wire pair comprises a wire pair I (1), a wire pair II (2), a wire pair III (3), a wire pair IV (4) and a printed board (5); the novel wire pair is characterized in that four wire pairs including a wire pair I (1), a wire pair II (2), a wire pair III (3) and a wire pair IV (4) are arranged on a printed board (5), and each wire pair comprises a pair of reeds (8); a pair of reeds (8) of each group of line pairs are parallel to each other and have the same distance; a printed board (5) is provided with a first reference line (6) and a second vertical reference line (7), the first reference line (6) and the second reference line (7) are perpendicular to the center point of the printed board (5), four groups of line pairs are respectively arranged at four corners of the printed board (5), the center connecting lines of two reeds (8) of a first line pair (1) at the upper left corner and the center connecting lines of two reeds (8) of a third line pair (3) at the lower right corner are both parallel to the first reference line (6), and the center connecting lines of two reeds (8) of a second line pair (2) at the upper right corner and the center connecting lines of two reeds (8) of a fourth line pair (4) at the lower left corner are both parallel to the second reference line (7).
- 2. The RJ45 jack reed pair emi layout-optimized wiring board module of claim 1, wherein the eight reeds (8) of pair one (1), pair two (2), pair three (3) and pair four (4) are at 45 ° or 135 ° angles with reference line one (6) or reference line two (7), respectively.
- 3. The RJ45 jack reed pair emi layout-optimized wiring board module of claim 1, wherein the connecting wires at the centers of the two reeds (8) in the same pair of wires, pair one (1), pair two (2), pair three (3) and pair four (4), are all parallel or perpendicular to datum line one (6) or datum line two (7).
- 4. The RJ45 jack reed pair anti-electromagnetic interference optimized arrangement wiring board module according to claim 3, wherein the connecting wires of the two reeds (8) of adjacent pairs are perpendicular to each other; two reeds (8) in the same wire pair are parallel to each other, and the vertical projection distance between parallel lines where the two reeds (8) in the same wire pair are located is larger than the diameter of a communication cable core wire.
- 5. The RJ45 jack reed pair emi optimized layout patch panel module of claim 1, wherein the extension of the wire of one of the two pairs of reeds (8) of adjacent pairs passes through the center of the wire of the other pair of reeds (8).
- 6. The RJ45 jack reed pair emi layout-optimized circuit board module of claim 1, wherein the printed board (5) is mounted on a module of a 24-port distribution frame, and at least one of the reference line one (6) or the reference line two (7) is parallel to the module center connection of the 24-port distribution frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383191.2U CN210040756U (en) | 2019-03-25 | 2019-03-25 | Anti-electromagnetic interference optimized arrangement circuit board module of RJ45 socket reed pair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383191.2U CN210040756U (en) | 2019-03-25 | 2019-03-25 | Anti-electromagnetic interference optimized arrangement circuit board module of RJ45 socket reed pair |
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| CN210040756U true CN210040756U (en) | 2020-02-07 |
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| CN201920383191.2U Active CN210040756U (en) | 2019-03-25 | 2019-03-25 | Anti-electromagnetic interference optimized arrangement circuit board module of RJ45 socket reed pair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888574A (en) * | 2019-03-25 | 2019-06-14 | 上海梓丞信息科技发展有限公司 | Comprehensive wiring RJ45 jack module and communication cable link reed aligning method |
-
2019
- 2019-03-25 CN CN201920383191.2U patent/CN210040756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888574A (en) * | 2019-03-25 | 2019-06-14 | 上海梓丞信息科技发展有限公司 | Comprehensive wiring RJ45 jack module and communication cable link reed aligning method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220831 Address after: Room 408, No. 5 and 6, Lane 1188, Wanrong Road, Jing'an District, Shanghai, 200072 Patentee after: Weishi Optical Cable (Shanghai) Co.,Ltd. Address before: Room 210, No. 5, Lane 1218, Wanrong Road, Zhabei District, Shanghai, 200072 Patentee before: Shanghai Zicheng Information Technology Development Co.,Ltd. |
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| TR01 | Transfer of patent right |