CN210350166U - Differential connector with special-shaped conductive structure - Google Patents
Differential connector with special-shaped conductive structure Download PDFInfo
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- CN210350166U CN210350166U CN201921120962.5U CN201921120962U CN210350166U CN 210350166 U CN210350166 U CN 210350166U CN 201921120962 U CN201921120962 U CN 201921120962U CN 210350166 U CN210350166 U CN 210350166U
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Abstract
The differential connector with the special-shaped conductive structure comprises a mounting mechanism, wherein a plurality of groups of differential conductive pieces are mounted in the mounting mechanism, and each differential conductive piece comprises a grounding piece and a differential signal piece; a protective structure is arranged outside the mounting mechanism; the inner wall of the protection structure is provided with a continuous and compact conductive coating, the differential signal sheet and the conductive coating are arranged at intervals, the grounding sheet is electrically connected with the conductive coating, and the conductive coating is used for forming a continuous anti-crosstalk structure outside the differential signal sheet. The utility model discloses a differential connector's outer protective layer is made to the mode that sprays conductive coating, can be processed into arbitrary shape, size for differential connector's processing cost is lower, processing is more convenient.
Description
Technical Field
The utility model belongs to the technical field of high-speed transmission connector, in particular to difference connector with dysmorphism conducting structure.
Background
The differential signal connector is a special multi-conductor connector, and refers to a pair of transmission lines with coupling; the differential signal transmission lines utilize two transmission drivers to drive two transmission lines, one to transmit signals and the other to be complementary signals, and the true valid signal is the voltage difference across the differential pair. Only two transmission lines are needed to form a differential pair;
the differential conductor needs to be reasonably routed to optimize the transmission performance of differential signals, so that the differential conductor is complex in shape and formed by a multi-section turning structure; when the connector is manufactured, because the differential conductive piece is arranged in the box body made of plastic materials, an outer protective layer is required to be arranged outside the differential conductive piece to control impedance and inhibit interference;
however, it is very difficult to process the metal conductor into the multi-section turning outer protective layer, the shape that the metal conductor can be processed is limited, which also limits the optimization degree of the transmission performance, each outer protective layer can only correspond to one type of differential conductive piece, so that the processing cost is high, and the signal transmission effect is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists provides the difference connector with dysmorphism conducting structure, and concrete technical scheme is as follows:
the differential connector with the special-shaped conductive structure comprises a mounting mechanism, wherein a plurality of groups of differential conductive pieces are mounted in the mounting mechanism, and each differential conductive piece comprises a grounding piece and a differential signal piece; a protective structure is arranged outside the mounting mechanism; the inner wall of the protection structure is provided with a continuous and compact conductive coating, the differential signal sheet and the conductive coating are arranged at intervals, the grounding sheet is electrically connected with the conductive coating, and the conductive coating is used for forming a continuous anti-crosstalk structure outside the differential signal sheet.
Furthermore, the protective structure comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are symmetrically installed on two sides of the installation mechanism, the inner walls of the first cover plate and the second cover plate are respectively provided with reserved grooves at intervals, an area between every two adjacent reserved grooves is provided with an installation strip, and the surfaces of the reserved grooves and the installation strip are respectively provided with the continuous and uniform conductive coatings; the surface mounting of mounting bar has the grounding piece, grounding piece laminating electric connection conductive coating.
Further, the cross section of the cavity surrounded by the two preformed grooves is polygonal or circular.
Furthermore, the cross section of the preformed groove is formed by three continuous conductive surfaces, the cross sections of the three conductive surfaces form a short side and two side edges in an isosceles trapezoid, the side edges are as long as the short side, the short side is parallel to the cover plate, and the side edges above and below are connected with the mounting bar.
Furthermore, the mounting bar is a clamping structure between the first cover plate and the second cover plate.
Further, installation mechanism includes first fixed plate and second fixed plate, difference electrically conductive piece in proper order fixed run through in first fixed plate with the second fixed plate, first fixed plate, second fixed plate block embedding in protective structure's inner wall.
The utility model has the advantages that:
1. the outer protective layer can effectively control impedance and inhibit interference, the conductive coating can be processed into any shape and size, the processing cost is lower, the processing is more convenient, and a designer does not need to consider the manufacturing problem of the outer protective layer when carrying out signal optimization design; the conductive coating and the grounding sheet can be matched to form a plurality of closed protection areas, so that when current passes through the cover plate area, the differential conductive sheets are always in a closed environment, electromagnetic fields are not interfered with one another, and the signal transmission effect is further improved;
2. due to the continuous and compact characteristics of the conductive coating, the continuity of the outer protective layer can be ensured, and no fault occurs, so that the signal transmission effect is better; and the spraying processing of the conductive coating is simpler and more convenient, and the processing process is easier to control, so that the processing precision is higher, and the signal transmission effect is improved.
Drawings
Fig. 1 shows a schematic diagram of a separation structure of a differential connector of the present invention;
fig. 2 is a schematic view illustrating a connection structure between the mounting mechanism and the plurality of groups of differential conductive elements according to the present invention;
fig. 3 is a schematic view illustrating an overall assembly structure of the differential connector of the present invention;
fig. 4 shows a schematic cross-sectional structure diagram of the differential connector of the present invention;
fig. 5 shows a schematic view of the connection structure of the grounding plate, the first cover plate and the second cover plate of the present invention;
fig. 6 shows a schematic top view of the differential connector of the present invention;
fig. 7 shows a schematic structural diagram of the material spraying device of the present invention;
reference numbers in the figures: 1. installation mechanism, 11, first fixed plate, 12, second fixed plate, 2, difference electrically conductive piece, 21, ground lug, 211, mounting hole, 22, difference signal piece, 3, first apron, 31, spacing groove, 32, preformed groove, 33, mounting bar, 331, erection column, 4, conductive coating, 5, second apron, 6, spraying device, 61, storage tank, 62, pump, 63, hose, 64, play flitch, 65, guide rail.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The differential connector with the special-shaped conductive structure comprises a mounting mechanism 1, wherein a plurality of groups of differential conductive pieces 2 are mounted inside the mounting mechanism 1, and each differential conductive piece 2 comprises a grounding piece 21 and a differential signal piece 22; a protective structure is arranged outside the mounting mechanism 1; the inner wall of the protection structure is provided with a continuous and compact conductive coating 4, the differential signal sheet 22 and the conductive coating 4 are arranged at intervals, the grounding sheet 21 is electrically connected with the conductive coating 4, and the conductive coating 4 is used for forming a continuous anti-crosstalk structure outside the differential signal sheet 22; the outer protective layer of the differential connector is manufactured by adopting a mode of spraying conductive paint, so that the outer protective layer can be processed into any shape and size on the basis of meeting the conductive performance, the processing cost is lower, the processing is more convenient, and a designer does not need to consider the manufacturing problem of the outer protective layer when carrying out signal optimization design.
As an improvement of the above technical solution, the protective structure includes a first cover plate 3 and a second cover plate 5, the first cover plate 3 and the second cover plate 5 are symmetrically installed on two sides of the installation mechanism 1, the inner walls of the first cover plate 3 and the second cover plate 5 are both provided with reserved grooves 32 at intervals, the area between adjacent reserved grooves 32 is an installation bar 33, and the surfaces of the reserved grooves 32 and the installation bar 33 are both provided with the continuous and uniform conductive coatings 4; the grounding sheet 21 is arranged on the surface of the mounting bar 33, and the grounding sheet 21 is attached to and electrically connected with the conductive coating 4; by coating the conductive coating 4 on the surfaces of the preformed groove 32 and the mounting bar 33, the conductive coating 4 can form a large-area anti-crosstalk protection structure outside the differential conductive members 2 in different groups, and the grounding strip 21 can divide the conductive coating 4 into multiple sections, so that the electromagnetic fields of the differential conductive members 2 are not interfered with each other.
As an improvement of the above technical solution, the cross section of the cavity surrounded by the two preformed grooves 32 is polygonal or circular; the polygon can make the corner of the groove surface smaller, and improve the continuity and compactness of the injection; the round shape can make the processing more simple and the process more convenient.
As an improvement of the above technical solution, the mounting bar 33 is a clamping structure between the first cover plate 3 and the second cover plate 5; the mounting bar 32 is the clamping structure of the first cover plate 3 and the second cover plate 5, and is also the mounting structure of the grounding plate 21, so that the first cover plate 3, the second cover plate 5 and the grounding plate 21 can be fixed at the same time, and the accurate positioning of the whole differential conductive piece 2 is also completed while the grounding plate 21 is fixed.
As an improvement of the above technical solution, the mounting mechanism 1 includes a first fixing plate 11 and a second fixing plate 12, the differential conductive member 2 is sequentially fixed to penetrate through the first fixing plate 11 and the second fixing plate 12, and the first fixing plate 11 and the second fixing plate 12 are engaged with and embedded in an inner wall of the protective structure; the block of protective structure and fixed plate is used for assembling difference conductive piece 2 and apron as an organic whole fast, and assigned position can be arranged in fast to difference conductive piece 2.
As shown in fig. 1 and 2, fig. 1 is a schematic diagram illustrating a separating structure of a differential connector according to the present invention; fig. 2 is a schematic view illustrating a connection structure between the mounting mechanism and the plurality of groups of differential conductive elements according to the present invention;
the differential connector main body framework consists of three parts, wherein the middle part is provided with an installation mechanism 1, and two sides of the installation mechanism 1 are symmetrically clamped and connected with a first cover plate 3 and a second cover plate 5; the three parts are connected to form a shell supporting part;
the mounting mechanism comprises a first fixing plate 11 and a second fixing plate 12, the first fixing plate 11 and the second fixing plate 12 are perpendicular to each other and are independently arranged, and the differential conductive piece 2 sequentially penetrates through the first fixing plate 11 and the second fixing plate 12 in the current conveying direction;
the differential conductive pieces 2 are provided with 4 groups, because of the differential design requirement, the shapes of each group of differential conductive pieces 2 are different, each group of differential conductive pieces 2 are sequentially provided with the grounding pieces 21 and the differential signal pieces 22 at equal intervals from top to bottom, and the grounding pieces 21 and the differential signal pieces 22 are in the same direction and are arranged in parallel; the width of the grounding sheet 21 is larger than that of the differential signal sheet 22, the differential signal sheet 22 is of a multi-section turning structure, and the multi-section turning structure is used for meeting the requirements of different positions of signal output and the requirements of signal transmission optimization;
the inner wall of the fixing plate is provided with 4 preformed grooves 32, and the preformed grooves 32 are opposite to the differential signal sheets 22;
as shown in fig. 3, fig. 3 is a schematic view illustrating an overall assembly structure of the differential connector of the present invention;
when the differential connector is assembled into a whole, the input end branched connectors of the grounding plate 21 and the differential signal plate 22 extend out of the side surface of the cover plate, so that the differential connector is conveniently connected with the outside in a plugging manner;
the output end fisheye elastic piece heads of the grounding piece 21 and the differential signal piece 22 extend out of the bottom surface of the cover plate.
As shown in fig. 4 and 5, fig. 4 is a schematic cross-sectional structure diagram of the differential connector of the present invention; fig. 5 shows an enlarged schematic structure diagram at a of the present invention;
when the first cover plate 3 and the second cover plate 4 are assembled, the mounting strip of the first cover plate 3, the grounding piece 21 and the mounting strip of the second cover plate 5 are tightly attached and clamped together, the mounting column 331 is arranged on the mounting strip of the first cover plate 3, and the mounting strip of the second cover plate 5 is provided with a clamping hole matched with the clamping column;
during assembly, the mounting posts 331 penetrate through the mounting holes 211 of the grounding plate 21, the end parts of the mounting posts 331 are clamped and embedded into the clamping holes, so that the two cover plates are fixed, and meanwhile, the grounding plate 21 is fixed;
the preformed groove 32 can be processed into a required shape according to communication requirements, illustratively, the cross section of the preformed groove 32 is formed by three continuous conductive surfaces, the cross sections of the three conductive surfaces form a short side and two side edges in an isosceles trapezoid, the length of the side edge is the same as that of the short side, the short side is parallel to the cover plate, the side edges above and below are connected with the mounting strip, the preformed groove 32 adopts an isosceles trapezoid structure to reduce the angle of the joint, so that the conductive coating sprayed at the corner has better connectivity and compactness; the differential signal pieces 22 are arranged at the symmetrical line of the reserved slots 32 at intervals;
the inner walls of the preformed groove 32 and the mounting bar 33 are coated with the conductive coating 4 with a certain thickness.
As shown in fig. 6, fig. 6 is a schematic top view of the differential connector of the present invention;
the inner walls of the first cover plate 3 and the second cover plate 5 are provided with limiting grooves 31 matched with the fixing plates, and when the fixing plates are installed, the fixing plates can be clamped and embedded into the limiting grooves 31 to realize fixation.
When the utility model is implemented, the preformed groove with the required shape is arranged on the mould; then pouring the molten raw materials into a mould for pouring and forming to form a first cover plate 3 and a second cover plate 5 which are required;
sticking release paper on the areas, which do not need to spray the conductive coating, on the cover plates, and then spraying the conductive coating on the inner walls of the reserved grooves of the two cover plates by a spraying device, wherein the spraying method adopts a cold melting spraying technology (compressed air is adopted to accelerate metal particles to zero-boundary speed, the metal particles are sprayed out by a nozzle, and the metal particles directly impact the surface of a matrix and then are physically deformed; after the spraying is finished, the aluminum particles form a conductive coating 4 with a certain thickness on the inner wall of each reserved groove; finally, tearing off the release paper;
then, the first cover plate 3 is connected with the mounting mechanism 1, so that the first fixing plate 11 and the second fixing plate 12 are embedded into the corresponding limiting grooves 31, the mounting posts 331 penetrate through the mounting holes 211 of the grounding piece 21, and the grounding piece 21 is mounted on the mounting bar 33; the differential signal sheets 22 are arranged at the internal symmetrical line of the conductive coating 4 at intervals, and the grounding sheet 21 is in contact with the conductive coating 4 in an attaching electric manner; then the second cover plate 5 is buckled to finish the preparation;
finally, the input end connector of the differential conductor is connected with the outer end connector, so that the grounding structure inside the outer end connector is electrically connected with the grounding piece 21, and the conductor inside the outer end connector is electrically connected with the differential signal piece 22;
when the electric energy meter works, signals are transmitted through the differential signal sheet 22, the current of the grounding sheet 21 is conducted to the conductive coating 4, so that the whole conductive coating 4 enters a conductive state, the grounding sheet 21 fully contacts with the conductive coating 4, the conductive coating 4 is divided into a plurality of protection areas by the grounding sheet 21, and each protection area is bounded by two conductive coatings and two grounding sheets; each individual region corresponds to one pre-groove 32 and one differential signal chip 22, so that the electromagnetic field of each differential signal chip 22 can not be crosstalk-propagated to other regions, and the electromagnetic field can be restrained in the protection region by the conductive coating 4, so that the anti-crosstalk protection is realized.
The manufacturing method of the differential connector with the special-shaped conductive structure comprises the following steps:
s1, preparing a conductive coating:
s1.1, attaching release paper to an area, where the conductive coating does not need to be sprayed, of the inner wall of the cover plate; the release paper is used for preventing parts which do not need to be electrically conductive from being sprayed to the conductive coating; after the processing is finished, the conductive material on the release paper can be recycled only by scraping, so that the cost is saved;
s1.2, spraying a conductive coating:
s1.2.1, matching the optimal spraying thickness X according to the cross section shape of the reserved groove; the angles between the conductive surfaces of the sections of the preformed grooves with different shapes are different, and the corresponding spraying thicknesses are also different in order to ensure the continuity and the compactness;
s1.2.2, spraying the conductive paint to the inner wall of the cover plate uniformly without dead angles by a spraying device;
s1.3, tearing off the release paper to finish the preparation of the conductive coating;
and S2, assembling and molding.
As an improvement of the above technical scheme, the spraying device completes the preparation of the conductive coating by a cold-melt spraying mode; the cold melting spraying mode can improve the spraying effect, so that the forming effect is better.
As an improvement of the technical scheme, the optimal spraying thickness X is in inverse proportion to the inner included angle of the preformed groove; when the angle is big more, then the corner slope of representing the reservation groove is more gentle, and its adhesion effect of the metal particle of spraying can improve, can suitably reduce spraying thickness under the prerequisite of guaranteeing electric conductivity, practices thrift the cost, and when the angle of reservation groove is less, then it is great to represent the slope, and spraying particle adheres to and can receive the influence, and the continuity is difficult for mastering, consequently, can increase spraying thickness, guarantees the continuity.
As an improvement of the technical scheme, the optimal spraying thickness X ranges from 0.08mm to 0.12 mm; the thickness is in the range of 0.08mm-0.12mm and is the maximum thickness in the spraying operation, the processing requirements of the differential conductive pieces 2 with different bending shapes can be ensured, and the conductive coatings at all positions are in a qualified state when the conductive pieces are sprayed at one time.
As shown in fig. 7, fig. 7 shows a schematic structural diagram of the material spraying device of the present invention;
the spraying device 6 comprises a storage tank 61, a pumping pump 62, a conveying hose 63, a discharging plate 64 and a guide rail 66, wherein the discharging plate 64 is slidably connected with the guide rail 66, the discharging plate 64 moves on the guide rail 66 at a uniform speed, the discharging plate 64 and a cover plate are arranged at intervals in an intersecting manner, the outlet length of the discharging plate 64 is the same as the width of the cover plate, the inlet end of the discharging plate 64 is communicated to the pumping pump 62 through the conveying hose 63, the pumping pump 62 is communicated to the storage tank 61, fine aluminum powder particles are stored in the storage tank 61, and a microprocessor is mounted on the outer wall of the storage tank 61; the outside of the discharging plate 64 is connected with high-pressure gas input equipment; the outlet length of the discharge plate 64 is the same as the width of the cover plate, so that the spraying device can be used for one-time full-coverage spraying, the application range of the device is widened, and the working efficiency is improved.
In the implementation of the above-described embodiments,
placing the cover plate on an adsorption clamp, and positioning the cover plate by a sucker of the adsorption clamp; covering release paper on the area of the cover plate which does not need spraying;
illustratively, the section of the preformed groove is in an isosceles trapezoid shape, the spraying thickness is determined to be 0.1mm, and the material pumping pump is adjusted to a proper discharging speed;
when the discharge plate passes through the reserved groove area, the pumping pump works at a proper speed, aluminum powder is pumped into the discharge plate, accelerated to a critical speed of 700m/s through a high-pressure cavity and a LAVAL nozzle in the discharge plate, and then sprayed to the inner wall of the reserved groove, so that a conductive coating 4 with the thickness of 0.1mm is sprayed on the inner wall of the reserved groove; then the discharging plate continues to slide along the guide rail, when the moving distance is the same as the length of the cover plate, the required conductive coating 4 can be prepared, and an outer protective layer is formed; finally, tearing off the release paper;
the aluminum particles on the release paper can be scraped off and melted for reuse.
When the working frequency is 12.5Ghz, the variation range of the crosstalk of the adjacent differential conductive pieces is 10-20 db;
the connector obtained through the preparation process can adjust crosstalk to 50db-57db under the same working environment, and the adjustment can greatly improve the signal transmission effect.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The differential connector with the special-shaped conductive structure comprises a mounting mechanism, wherein a plurality of groups of differential conductive pieces are mounted in the mounting mechanism, and each differential conductive piece comprises a grounding piece and a differential signal piece; the method is characterized in that: a protective structure is arranged outside the mounting mechanism; the inner wall of the protection structure is provided with a continuous and compact conductive coating, the differential signal sheet and the conductive coating are arranged at intervals, the grounding sheet is electrically connected with the conductive coating, and the conductive coating is used for forming a continuous anti-crosstalk structure outside the differential signal sheet.
2. The differential connector with profiled conductive structures of claim 1, wherein: the protective structure comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are symmetrically arranged on two sides of the mounting mechanism, reserved grooves are formed in the inner walls of the first cover plate and the second cover plate at intervals, mounting bars are arranged in the areas between the adjacent reserved grooves, and the surfaces of the reserved grooves and the mounting bars are provided with continuous and uniform conductive coatings; the surface mounting of mounting bar has the grounding piece, grounding piece laminating electric connection conductive coating.
3. The differential connector with profiled conductive structures of claim 2, wherein: the cross section of the cavity surrounded by the two preformed grooves is polygonal or circular.
4. The differential connector with profiled conductive structures of claim 3, wherein: the cross-section of preformed groove constitutes for three continuous electrically conductive face, three the cross-section of electrically conductive face constitutes minor face and two sides among the isosceles trapezoid, the side with the length of minor face is the same, the minor face with apron parallel arrangement, be located the top the side, be located the below the side all with the mounting bar is connected.
5. Differential connector with profiled conductive structures according to any of claims 2 to 4, characterized in that: the mounting bar is the joint structure between first apron, the second apron.
6. The differential connector with profiled conductive structures of claim 5, wherein: the mounting mechanism comprises a first fixing plate and a second fixing plate, the differential conductive pieces sequentially penetrate through the first fixing plate and the second fixing plate, and the first fixing plate and the second fixing plate are clamped and embedded into the inner wall of the protective structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921120962.5U CN210350166U (en) | 2019-07-17 | 2019-07-17 | Differential connector with special-shaped conductive structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921120962.5U CN210350166U (en) | 2019-07-17 | 2019-07-17 | Differential connector with special-shaped conductive structure |
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| CN210350166U true CN210350166U (en) | 2020-04-17 |
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| CN201921120962.5U Active CN210350166U (en) | 2019-07-17 | 2019-07-17 | Differential connector with special-shaped conductive structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247223A (en) * | 2019-07-17 | 2019-09-17 | 上海航天科工电器研究院有限公司 | Differential connector and preparation method thereof with special-shaped conductive structure |
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2019
- 2019-07-17 CN CN201921120962.5U patent/CN210350166U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247223A (en) * | 2019-07-17 | 2019-09-17 | 上海航天科工电器研究院有限公司 | Differential connector and preparation method thereof with special-shaped conductive structure |
| CN110247223B (en) * | 2019-07-17 | 2024-01-26 | 上海航天科工电器研究院有限公司 | Differential connector with special-shaped conductive structure and manufacturing method thereof |
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