CN110247223B - Differential connector with special-shaped conductive structure and manufacturing method thereof - Google Patents
Differential connector with special-shaped conductive structure and manufacturing method thereof Download PDFInfo
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- CN110247223B CN110247223B CN201910645978.6A CN201910645978A CN110247223B CN 110247223 B CN110247223 B CN 110247223B CN 201910645978 A CN201910645978 A CN 201910645978A CN 110247223 B CN110247223 B CN 110247223B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 65
- 239000011248 coating agent Substances 0.000 claims abstract description 61
- 238000005507 spraying Methods 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 13
- 239000011241 protective layer Substances 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 239000004020 conductor Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 6
- 239000002923 metal particle Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000005672 electromagnetic field Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding with earth pin, blade or socket
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
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; the outside of the mounting mechanism is provided with a protection structure; the inner wall of the protective structure is provided with a continuous 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 invention adopts the mode of spraying the conductive coating to manufacture the outer protective layer of the differential connector, and can be processed into any shape and size, so that the processing cost of the differential connector is lower and the processing is more convenient.
Description
Technical Field
The invention belongs to the technical field of high-speed transmission connectors, and particularly relates to a differential connector with a special-shaped conductive structure and a manufacturing method thereof.
Background
A differential signal connector is a special multi-conductor connector, meaning a pair of transmission lines with coupling; the transmission lines of the differential signal drive two transmission lines with two transmission drivers, one transmission signal and the other being the complementary signal, while the true effective signal is the voltage difference across the differential pair. Only two transmission lines are needed to form a differential pair;
the differential conductor must carry on the reasonable wiring planning, can optimize the transmission performance of the differential signal, therefore, the shape of the differential conductor is complex, have the structure of multi-section turning; when the connector is manufactured, as the differential conductive piece is arranged in the box body made of plastic, an external 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 outer protective layer with multi-section turning, the shape that the metal conductor can process is limited, which limits the optimization degree of transmission performance, and each outer protective layer can only correspond to one kind of differential conductive piece, so that the processing cost is high, and the signal transmission effect is affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a differential connector with a special-shaped conductive structure and a manufacturing method thereof, and the specific 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; the outside of the mounting mechanism is provided with a protection structure; the inner wall of the protective structure is provided with a continuous 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.
Further, the protection 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 installation mechanism, reserved grooves are formed in the inner walls of the first cover plate and the second cover plate at intervals, installation strips are arranged in the areas between the adjacent reserved grooves, and continuous and uniform conductive coatings are arranged on the surfaces of the reserved grooves and the installation strips; the surface mounting of the mounting strip is provided with the grounding piece, and the grounding piece is attached to and electrically connected with the conductive coating.
Further, the cross section of the cavity surrounded by the two reserved grooves is polygonal or circular.
Further, the cross section of the reservation 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 length of the side edge is the same as that of the short side edge, the short side edge is arranged in parallel with the cover plate, and the side edge positioned above and the side edge positioned below are connected with the mounting strip.
Further, the mounting strip is a clamping structure between the first cover plate and the second cover plate.
Further, the installation mechanism comprises a first fixing plate and a second fixing plate, the differential conductive piece sequentially penetrates 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 protection structure.
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 a region of the inner wall of a cover plate, wherein the region does not need to be sprayed with a conductive coating;
s1.2, spraying conductive paint:
s1.2.1, matching the optimal spraying thickness X according to the cross section shape of the reserved groove;
s1.2.2 the spraying device uniformly sprays the conductive coating on the inner wall of the cover plate without dead angles;
s1.3, tearing off the release paper to finish the preparation of the conductive coating;
s2, assembling and forming.
Further, the spraying device completes the preparation of the conductive coating through a cold-melt spraying mode.
Further, the optimal spraying thickness X is inversely proportional to the internal included angle of the reserved groove.
Further, injection apparatus includes storage tank, pump, delivery hose, flitch and guide rail, flitch sliding connection guide rail, the flitch with the crossing interval setting of apron, the export length of flitch with the width of apron is the same, the entry end of flitch passes through delivery hose intercommunication extremely pump, pump intercommunication extremely the storage tank, fine conductive particles is being stored to the storage tank inside, flitch external connection has high-pressure gas input device.
The beneficial effects of the invention are as follows:
1. the outer protective layer of the differential connector is manufactured by adopting a metal coating spraying mode, so that the impedance can be effectively controlled, the interference can be inhibited, 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 plates can be matched to form a plurality of closed protection areas, so that when current passes through the cover plate area, each differential conductive plate is always in a closed environment, electromagnetic fields are not mutually interfered, and further, the signal transmission effect is improved;
2. the continuity of the outer protective layer can be ensured due to the continuous and compact characteristics of the conductive coating, faults can not occur, and the signal transmission effect is better; the jet processing of the conductive coating is simpler and more convenient, the processing process is easier to control, the processing precision is higher, and the signal transmission effect is improved;
3. when in spraying, the spraying thickness range is determined according to different cross-sectional shapes of the reserved groove, so that the spraying process can be optimized, the consumption of conductive materials is reduced, the cost is reduced, and resources are saved on the basis that the conductive performance of the conductive coating is met.
Drawings
Fig. 1 shows a schematic diagram of a differential connector separation structure of the present invention;
FIG. 2 is a schematic diagram showing the connection structure of the mounting mechanism and the multiple differential conductive members of the present invention;
fig. 3 is a schematic diagram showing the overall assembly structure of the differential connector of the present invention;
FIG. 4 shows a schematic cross-sectional structure of a differential connector of the present invention;
FIG. 5 is a schematic view showing the connection structure of the grounding plate, the first cover plate and the second cover plate;
FIG. 6 shows a schematic top view of a differential connector of the present invention;
FIG. 7 shows a schematic diagram of the structure of the material spraying device of the invention;
reference numerals in the drawings: 1. the device comprises a mounting mechanism, 11, a first fixing plate, 12, a second fixing plate, 2, a differential conductive piece, 21, a grounding piece, 211, a mounting hole, 22, a differential signal piece, 3, a first cover plate, 31, a limit groove, 32, a reserved groove, 33, a mounting strip, 331, a mounting column, 4, a conductive coating, 5, a second cover plate, 6, a spraying device, 61, a storage tank, 62, a pumping pump, 63, a hose, 64, a discharging plate, 65 and a guide rail.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of 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 in the mounting mechanism 1, and each differential conductive piece 2 comprises a grounding piece 21 and a differential signal piece 22; the outside of the mounting mechanism 1 is provided with a protective structure; the inner wall of the protective structure is provided with a continuous 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 is 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 protection 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 respectively provided with a reserved groove 32 at intervals, the area between adjacent reserved grooves 32 is provided with an installation strip 33, and the surfaces of the reserved grooves 32 and the installation strip 33 are respectively provided with a continuous and uniform conductive coating 4; the surface of the mounting strip 33 is provided with the grounding piece 21, and the grounding piece 21 is attached and electrically connected with the conductive coating 4; by coating the conductive coating 4 on the surfaces of the reserved groove 32 and the mounting strip 33, the conductive coating 4 can form a large-area anti-crosstalk protection structure outside the differential conductive pieces 2 in different groups, and the grounding piece 21 can divide the conductive coating 4 into multiple sections, so that the electromagnetic fields of the differential conductive pieces 2 are not mutually interfered.
As an improvement of the above technical solution, the cross section of the cavity enclosed by the two pre-grooves 32 is polygonal or circular; the polygon can make the corner of the groove surface smaller, and improve the continuity and compactness of injection; the round shape can make the processing simpler and more convenient and the process simpler and 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 strip 32 is not only a clamping structure of the first cover plate 3 and the second cover plate 5, but also a mounting structure of the grounding piece 21, so that the first cover plate 3, the second cover plate 5 and the grounding piece 21 can be simultaneously fixed, and the grounding piece 21 is fixed, and meanwhile, the whole differential conductive piece 2 is accurately positioned.
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 and penetrates 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 and embedded in an inner wall of the protective structure; the protection structure is used for assembling the differential conductive piece 2 and the cover plate into a whole fast with the clamping of the fixing plate, and the differential conductive piece 2 can be placed at a designated position fast.
As shown in fig. 1 and 2, fig. 1 shows a schematic diagram of a differential connector separation structure of the present invention; FIG. 2 is a schematic diagram showing the connection structure of the mounting mechanism and the multiple differential conductive members of the present invention;
the differential connector main body framework consists of three parts, wherein the middle part is provided with a mounting mechanism 1, and the two sides of the mounting mechanism 1 are symmetrically clamped and connected with a first cover plate 3 and a second cover plate 5; the three 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 mutually and independently arranged, and the differential conductive piece 2 sequentially penetrates through the first fixing plate 11 and the second fixing plate 12 according to the current conveying direction;
the differential conductive pieces 2 are provided with 4 groups, and because of the differential design requirement, the shapes of the differential conductive pieces 2 in each group are different, and the grounding pieces 21 and the differential signal pieces 22 are sequentially and equidistantly arranged from top to bottom, and the grounding pieces 21 and the differential signal pieces 22 are arranged in parallel in the same trend; the width of the grounding plate 21 is larger than that of the differential signal plate 22, the differential signal plate 22 is of a multi-section turning structure, and the multi-section turning structure is used for meeting the requirements of different signal output positions and signal transmission optimization requirements;
4 reserved slots 32 are formed in the inner wall of the fixed plate, and the reserved slots 32 are arranged opposite to the differential signal sheet 22;
as shown in fig. 3, fig. 3 shows a schematic diagram of the entire assembly structure of the differential connector of the present invention;
when the differential connector is assembled into a whole, the input end bifurcation joints of the grounding plate 21 and the differential signal plate 22 extend outwards from the side surface of the cover plate, so that the connector is convenient to connect with the outside in a plugging manner;
the fish eye elastic element heads at the output ends of the grounding plate 21 and the differential signal plate 22 extend outwards from the bottom surface of the cover plate.
As shown in fig. 4 and 5, fig. 4 shows a schematic cross-sectional structure of the differential connector of the present invention; FIG. 5 shows an enlarged schematic view of the structure of the present invention at A;
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 adhered 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 column 331 passes through the mounting hole 211 of the grounding plate 21, and the end part of the mounting column 331 is clamped and embedded into the clamping hole, so that the two cover plates are fixed, and the grounding plate 21 is fixed at the same time;
the reserved groove 32 can be processed into a required shape according to communication requirements, and the cross section of the reserved 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 lengths of the side edges are the same, the short side edges are arranged in parallel with the cover plate, the side edge positioned above and the side edge positioned below are connected with the mounting strip, and the angle of the connecting position of the reserved groove 32 can be reduced by adopting an isosceles trapezoid structure, so that the connectivity and compactness of the conductive coating sprayed at the corner are better; the differential signal pieces 22 are arranged at the symmetrical line of the reserved groove 32 at intervals;
the inner walls of the pre-groove 32 and the mounting bar 33 are all coated with a conductive coating 4 of a certain thickness.
As shown in fig. 6, fig. 6 shows a schematic top view of the differential connector of the present invention;
the limiting grooves 31 matched with the fixing plates are formed in the inner walls of the first cover plate 3 and the second cover plate 5, and the fixing plates can be clamped and embedded into the limiting grooves 31 to achieve fixation during installation.
When the invention is implemented, a reserved groove with a required shape is formed on the die; pouring the melted raw materials into a mould for casting and forming to form a first cover plate 3 and a second cover plate 5 which are required;
sticking release paper on the area of the cover plates where the conductive coating is not required to be sprayed, then spraying the conductive coating on the inner walls of the reserved grooves of the two cover plates through a spraying device, wherein the spraying method adopts a cold-melt spraying technology (compressed air is adopted to accelerate metal particles to zero-boundary speed, the metal particles are sprayed out through a nozzle and then are subjected to physical deformation after directly striking the surface of a substrate, the metal particles are collided and flattened on the surface of the substrate and firmly attached, the metal particles are not melted in the whole process, and the temperature generated by spraying the surface of the substrate does not exceed 150 ℃); 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 plate 21, and the grounding plate 21 is mounted on the mounting strip 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 attached to and electrically contacted with the conductive coating 4; then the second cover plate 5 is buckled, and the preparation can be completed;
finally, connecting the input terminal connector of the differential conductor with the outer terminal, so that the grounding structure inside the outer terminal is electrically connected with the grounding sheet 21, and the conductor inside the outer terminal is electrically connected with the differential signal sheet 22;
during operation, signals are transmitted through the differential signal sheet 22, and current of the grounding sheet 21 is conducted to the conductive coating 4, so that the whole conductive coating 4 enters a conductive state, and the grounding sheet 21 divides the conductive coating 4 into a plurality of protection areas due to the fact that the grounding sheet 21 is fully contacted with the conductive coating 4, and each protection area is formed by two conductive coatings and two grounding sheets; each individual region corresponds to one of the pre-grooves 32 and one of the differential signal pads 22, so that the electromagnetic field of each differential signal pad 22 does not cross-talk to other regions, and the electromagnetic field is suppressed by the conductive coating 4 in the protective region, thereby achieving anti-cross-talk protection.
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 a region of the inner wall of a cover plate, wherein the region does not need to be sprayed with a conductive coating; the release paper is used for preventing parts which do not need to be conductive from being sprayed to the conductive paint; after the processing is finished, the conductive material on the release paper is scraped off, so that the release paper can be recovered and reused, and the cost is saved;
s1.2, spraying conductive paint:
s1.2.1, matching the optimal spraying thickness X according to the cross section shape of the reserved groove; the angles among the conductive surfaces of the cross sections of the reserved grooves with different shapes are different, and the corresponding spraying thicknesses are also different in order to ensure the continuity and compactness;
s1.2.2 the spraying device uniformly sprays the conductive coating on the inner wall of the cover plate without dead angles;
s1.3, tearing off the release paper to finish the preparation of the conductive coating;
s2, assembling and forming.
As an improvement of the 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 inversely proportional to the internal included angle of the reserved groove; when the angle is bigger, then indicate that the corner slope of reservation groove is slower, its effect of attaching of metal particle of spraying can improve, can suitably reduce the spraying thickness under the prerequisite of guaranteeing electric conductivity, practice thrift the cost, when the angle of reservation groove is less, then indicate that the slope is great, the spraying particle is attached and can be influenced, and the continuity is difficult to master, consequently, can increase the spraying thickness, guarantees the continuity.
As an improvement of the technical scheme, the optimal spraying thickness X is in the range of 0.08mm-0.12mm; the thickness is in the range of 0.08mm-0.12mm and is the maximum thickness in the spraying operation, so that 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 during one-time spraying.
As shown in fig. 7, fig. 7 shows a schematic structural diagram of a material spraying device of the present invention;
the spraying device 6 comprises a storage tank 61, a material pumping pump 62, a conveying hose 63, a discharging plate 64 and a guide rail 66, wherein the discharging plate 64 is connected with the guide rail 66 in a sliding manner, the discharging plate 64 moves on the guide rail 66 at equal 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 identical to the width of the cover plate, the inlet end of the discharging plate 64 is communicated to the material pumping pump 62 through the conveying hose 63, the material 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 arranged on the outer wall of the storage tank 61; the discharging plate 64 is externally connected with high-pressure gas input equipment; the outlet length of the discharging plate 64 is the same as the width of the cover plate, so that the spraying device is disposable full-coverage spraying, and the application range of the device is improved, and the working efficiency is accelerated.
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 is not required to be sprayed;
the cross section of the reserved groove is isosceles trapezoid, the spraying thickness is determined to be 0.1mm, and the material sucking pump is adjusted to a proper discharging speed;
when the discharge plate passes through the reserved groove area, the material pump works at a proper speed, aluminum powder is pumped into the discharge plate, accelerated to a critical speed of 700m/s by a high-pressure cavity in the discharge plate and a LAVAL nozzle, 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 continuously slides along the guide rail, and when the moving distance is the same as the length of the cover plate, the required conductive coating 4 can be prepared to form an outer protective layer; 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 adjacent differential conducting pieces is 10-20db;
the connector obtained through the preparation process can adjust crosstalk to 50db-57db under the same working environment, and the adjustment can greatly improve signal transmission effect.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the 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: the outside of the mounting mechanism is provided with a protection structure; the inner wall of the protective structure is provided with a continuous 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 protective structure comprises a first cover plate and a second cover plate, wherein the first cover plate and the second cover plate are symmetrically arranged on two sides of the installation mechanism, reserved grooves are formed in the inner walls of the first cover plate and the second cover plate at intervals, installation strips are arranged in the areas between the adjacent reserved grooves, and continuous and uniform conductive coatings are arranged on the surfaces of the reserved grooves and the installation strips; the grounding piece is mounted on the surface of the mounting strip and is attached to and electrically connected with the conductive coating;
the cross section of the cavity surrounded by the two reserved grooves is polygonal or circular;
the mounting mechanism comprises a first fixing plate and a second fixing plate, the differential conductive piece sequentially penetrates 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 protection structure;
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 a region of the inner wall of a cover plate, wherein the region does not need to be sprayed with a conductive coating;
s1.2, spraying conductive paint:
s1.2.1, matching the optimal spraying thickness X according to the cross section shape of the reserved groove;
s1.2.2 the spraying device uniformly sprays the conductive coating on the inner wall of the cover plate without dead angles;
s1.3, tearing off the release paper to finish the preparation of the conductive coating;
s2, assembling and forming.
2. The differential connector with profiled conductive structure as claimed in claim 1, wherein: the cross section of the reservation 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 length of the side edge is the same as that of the short side edge, the short side edge is arranged in parallel with the cover plate, and the side edge positioned above and the side edge positioned below are connected with the mounting strip.
3. Differential connector with profiled conductive structure according to any one of claims 1-2, characterized in that: the mounting strip is of a clamping structure between the first cover plate and the second cover plate.
4. The differential connector with profiled conductive structure as claimed in claim 1, wherein: the spraying device completes the preparation of the conductive coating by a cold-melt spraying mode.
5. The differential connector with profiled conductive structure as claimed in claim 4, wherein: the optimal spraying thickness X is inversely proportional to the internal included angle of the reserved groove.
6. Differential connector with profiled conductive structure according to any one of claims 4-5, characterized in that: the spraying device comprises a storage tank, a pumping pump, a conveying hose, a discharging plate and a guide rail, wherein the discharging plate is connected with the guide rail in a sliding manner, the discharging plate is arranged at an intersecting interval with the cover plate, the outlet length of the discharging plate is equal to the width of the cover plate, the inlet end of the discharging plate is communicated with the pumping pump through the conveying hose, the pumping pump is communicated with the storage tank, fine conductive particles are stored in the storage tank, and the discharging plate is externally connected with high-pressure gas input equipment.
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| CN114498124B (en) * | 2022-01-25 | 2024-05-24 | 深圳市西点精工技术有限公司 | Backboard connector socket |
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