CN210326376U - Radio frequency coaxial connector with special-shaped conductive structure - Google Patents
Radio frequency coaxial connector with special-shaped conductive structure Download PDFInfo
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- CN210326376U CN210326376U CN201921121505.8U CN201921121505U CN210326376U CN 210326376 U CN210326376 U CN 210326376U CN 201921121505 U CN201921121505 U CN 201921121505U CN 210326376 U CN210326376 U CN 210326376U
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Abstract
The radio frequency coaxial connector with the special-shaped conductive structure comprises a mounting plate; the inner wall of the preformed groove is provided with a continuous and compact conductive coating, the coaxial conductive piece comprises a grounding part and a signal transmission part, the grounding part is electrically connected with the conductive coating, and the signal transmission part is arranged in the conductive coating at intervals; the conductive coating is used for forming an outer protective layer outside the coaxial conductive piece; the assembly groove, the reserved groove, the conductive coating, the signal transmission part and the grounding part are coaxially arranged; the utility model discloses a coaxial connector's outer protective layer is made to spraying metallic paint's mode, can be so that outer protective layer can be processed for arbitrary shape, size on satisfying the basis of electric conductivity for coaxial 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 radio frequency coaxial connector with dysmorphism conducting structure.
Background
The coaxial connector has the advantages of coaxial structure, so that the continuity of the characteristic impedance of the coaxial connector relative to other connectors is easier to ensure, the transmission interference and the interference are very low, the transmission loss is low, and the coaxial connector is almost and only used in the radio frequency and microwave fields;
the radio frequency coaxial connector is composed of a plurality of single coaxial connectors, the main body part of each single coaxial connector is mainly composed of a plurality of groups of coaxial conductive pieces, two cover plates and a plurality of outer end heads, and in order to meet the requirements of conversion of wiring directions, optimization of signal transmission performance and the like, the coaxial conductive pieces need to turn inside the cover plates so as to change the direction of a current outlet end;
because the coaxial conductive piece is arranged in the box body made of plastic materials, an outer protective layer coaxial with the coaxial conductive piece is required to be arranged outside the coaxial conductive piece to control impedance and inhibit interference; however, on the basis of ensuring the coaxiality, it is very difficult to process the metal conductor into the outer protective layers with multi-section turning, the shapes which can be processed are limited, the optimization degree of the transmission performance is limited, each outer protective layer can only correspond to one type of coaxial conductive piece, the processing cost is high, the coaxiality is difficult to control, and the signal transmission effect is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists provides the radio frequency coaxial connector who has special-shaped conductive structure, and concrete technical scheme is as follows:
the radio frequency coaxial connector with the special-shaped conductive structure comprises a mounting plate; coaxial conductive pieces are arranged in the mounting plate, and a plurality of groups of coaxial conductive pieces are arranged; cover plates are symmetrically arranged on two sides of the mounting plate; the inner wall of the cover plate is provided with a plurality of reserved grooves at intervals, the input end of each reserved groove is provided with an assembly groove, and the coaxial conductive piece sequentially penetrates through the assembly grooves and the central line of each reserved groove; the area between the adjacent assembling grooves is an insulating barrier strip; the inner wall of the preformed groove is provided with a continuous and compact conductive coating, the coaxial conductive piece comprises a grounding part and a signal transmission part, the grounding part is electrically connected with the conductive coating, and the signal transmission part is arranged in the conductive coating at intervals; the conductive coating is used for forming an outer protective layer outside the coaxial conductive piece; the assembly groove, the reserved groove, the conductive coating, the signal transmission part and the grounding part are coaxially arranged.
Further, coaxial electrically conductive piece includes signal piece, first grounding lug and second grounding lug, the signal piece does the signal transmission part, first grounding lug, second grounding lug do the grounding part, interval parallel arrangement between first grounding lug, signal piece and the second grounding lug, the signal piece is located between first grounding lug, the second grounding lug, the shape is the same between signal piece, first grounding lug and the second grounding lug, the signal piece comprises straight line portion and multistage turn part, conductive coating's distribution shape with the shape of signal piece is the same.
Further, the preformed groove includes middle groove, first side groove and second side groove, first side groove is connected to one side of middle groove, the second side groove is connected to the opposite side of middle groove, first side groove, second side groove all with apron parallel arrangement, the signal piece interval is arranged in two axis department between the middle groove, first ground lug parallel laminating is arranged in two between the first side groove, second ground lug parallel laminating is arranged in two between the second side groove.
Further, the cross section of the cavity surrounded by the two middle grooves is a regular polygon or a circle.
Furthermore, the middle 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 each side edge is equal to that of each short side edge, the short side edges are arranged in parallel with the cover plate, the side edges positioned above the short side edges are connected with the first side grooves, and the side edges positioned below the short side edges are connected with the second side grooves.
Furthermore, two of the relative setting laminate the assembly between the insulating blend stop, the lateral surface of insulating blend stop is flexible insulating layer.
Furthermore, a plurality of fixing grooves are formed in the cover plate, each fixing groove is intersected with each reserved groove, a plurality of fixing rods are arranged on the mounting plate, the fixing rods are oppositely clamped and embedded into the fixing grooves, and a plurality of groups of coaxial conductive pieces penetrate through the fixing rods.
The utility model has the advantages that:
1. 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; in the whole reserved groove area, the conductive coating can be in full electrical contact with the first grounding piece and the second grounding piece all the time, and an electromagnetic field generated by the signal piece is sealed in the conductive coating, so that the electromagnetic field is prevented from being interfered to other groups of coaxial conductive pieces, and the signal transmission effect is enhanced;
2. the insulating barrier strips are used for ensuring that different conductive components are independent areas, electromagnetic fields cannot interfere with each other, and the anti-crosstalk effect is further improved;
3. 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; 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, the coaxiality of the outer protective layer and the coaxial conductive piece can be further improved, and the signal transmission effect is further improved.
Drawings
Fig. 1 shows a schematic diagram of a separation structure of the rf coaxial connector of the present invention;
fig. 2 shows a schematic view of the cover plate structure of the present invention;
fig. 3 is a schematic view illustrating a connection structure of the coaxial conductive member and the mounting plate according to the present invention;
fig. 4 shows a schematic cross-sectional structure diagram of a first embodiment of the rf coaxial connector of the present invention;
fig. 5 shows a schematic cross-sectional structure diagram of a second embodiment of the rf coaxial connector of the present invention;
fig. 6 shows a schematic structural view of a cover plate spraying state of the present invention;
shown in the figure: 1. the mounting plate, 11, the dead lever, 111, the card post, 2, coaxial electrically conductive piece, 21, the signal piece, 22, first ground lug, 23, second ground lug, 3, the apron, 31, the assembly groove, 32, the fixed slot, 321, the card hole, 33, the reservation groove, 331, the middle groove, 332, first side groove, 333, the second side groove, 34, insulating blend stop, 4, conductive coating, 5, spraying device, 51, the storage tank, 52, the pump, 53, the hose, 54, play flitch, 55, the 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 radio frequency coaxial connector with the special-shaped conductive structure comprises a mounting plate 1; coaxial conductive pieces 2 are arranged in the mounting plate 1, and a plurality of groups of the coaxial conductive pieces 2 are arranged; cover plates 3 are symmetrically arranged on two sides of the mounting plate 1; the inner wall of the cover plate 3 is provided with reserved grooves 33 at intervals; the preformed groove 33 is used as an installation base of the outer protection layer;
the number of the reserved slots 33 is multiple, the input end of each reserved slot 33 is provided with an assembly slot 31, each assembly slot 31 is used for being sleeved with an outer end, and the outer end is an outer connecting column of the coaxial connector;
the coaxial conductive piece 2 sequentially penetrates through the assembly groove 31 and the central line of the reserved groove 33; the area between the adjacent assembling grooves 31 is an insulating barrier strip 34; the insulating barrier strips are used for ensuring that independent capacitors are arranged among different conductive components, electromagnetic fields cannot interfere with each other, and the anti-crosstalk effect is improved;
the inner wall of the preformed groove 33 is provided with a continuous and compact conductive coating 4; the coaxial conductive piece 2 comprises a grounding part and a signal transmission part, the grounding part is electrically attached to the conductive coating 4, and the signal transmission part is arranged in the conductive coating 4 at intervals; the conductive coating 4 is used for forming an outer protection layer outside the coaxial conductive piece 2; the outer protective layer of the coaxial connector is manufactured by adopting a mode of spraying metal 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, and the processing is more convenient;
the assembly groove 31, the reserved groove 33, the conductive coating 4, the signal transmission part and the grounding part are coaxially arranged; the coaxial arrangement is used for guaranteeing the normal work of the radio frequency coaxial connector, and the conductive coating 4 can accurately meet the coaxial requirement.
As an improvement of the above technical solution, the coaxial conductive member 2 includes a signal plate 21, a first ground plate 22 and a second ground plate 23, the signal plate 21 is the signal transmission part, the first ground plate 22 and the second ground plate 23 are the ground parts, the first ground plate 22, the signal plate 21 and the second ground plate 23 are arranged in parallel at intervals, the signal plate 21 is located between the first ground plate 22 and the second ground plate 23, the signal plate 21, the first ground plate 22 and the second ground plate 23 have the same shape, the signal plate 21 is composed of a straight part and a plurality of turning parts, and the distribution shape of the conductive coating 4 is the same as the shape of the signal plate 21; the straight line part and the multi-section turning part are used for meeting the requirements of steering output and optimizing the transmission effect of the coaxial conductive part; the signal sheets 21 are distributed in the same shape to ensure the coaxial effect; in the whole reserved groove area, the conductive coating 4 can be in full electrical contact with the first grounding piece 22 and the second grounding piece 23 all the time, and the electromagnetic field generated by the signal piece 21 is sealed inside the conductive coating 4, so that the electromagnetic field is prevented from being interfered to other groups of coaxial conductive pieces, and the signal transmission effect is enhanced.
As an improvement of the above technical solution, the preformed groove 33 includes a middle groove 331, a first side groove 332, and a second side groove 333, one side of the middle groove 331 is connected to the first side groove 332, the other side of the middle groove 331 is connected to the second side groove 333, both the first side groove 332 and the second side groove 333 are arranged in parallel with the cover plate 3, the signal pads 21 are arranged at an interval on a central axis between the two middle grooves 331, the first ground pads 22 are arranged between the two first side grooves 332 in a parallel fit manner, and the second ground pads 23 are arranged between the two second side grooves 333 in a parallel fit manner; the first grounding plate 22 is attached to the first side groove 332, that is, attached to the conductive coating 4 on the inner wall of the first side groove 332, so that the first grounding plate 22 can conduct electricity to the conductive coating 4, and the same second grounding plate 23 can also conduct electricity to the conductive coating 4 on the inner wall of the second side groove 333, so that the conductive coating 4 can form an outer protection layer.
As an improvement of the above technical solution, the cross section of the cavity surrounded by the two intermediate grooves 31 is a regular polygon or a circle; the regular polygon is used for reducing the turning angle and facilitating spraying, the circle is used for facilitating manufacturing, and the coaxiality of the regular polygon and the circle can be guaranteed.
As an improvement of the above technical solution, two insulating barrier strips 34 which are oppositely arranged are fitted and assembled, and the outer side surfaces of the insulating barrier strips 34 are flexible insulating layers; the flexible insulating layer is used for improving the attaching tightness of the two insulating barrier strips 34, when the insulating barrier strips 34 are attached tightly, the coaxial conductive pieces of different groups can be ensured not to be interfered with each other, and the connecting sealing effect and the isolating effect of the cover plate 3 can be improved; the flexible insulating layer is exemplified by an insulating flame retardant rubber.
As an improvement of the above technical solution, a plurality of fixing grooves 32 are formed in the cover plate 3, each fixing groove 32 is intersected with each reserved groove 33, a plurality of fixing rods 11 are arranged on the mounting plate 1, the fixing rods 11 are relatively embedded in the fixing grooves 32 in a clamping manner, and a plurality of sets of coaxial conductive members 2 are fixedly penetrated through the fixing rods 11; the fixing rod 11 is used for clamping and fixing the multiple sets of coaxial conductive pieces 2, and the fixing rod 11 can be clamped and connected with the fixing groove 32 at the same time, so that the two cover plates 3 and the mounting plate 1 are assembled.
As shown in fig. 1-3, fig. 1 is a schematic diagram illustrating a separation structure of a radio frequency coaxial connector according to the present invention; fig. 2 shows a schematic view of the cover plate structure of the present invention; fig. 3 is a schematic view illustrating a connection structure of the coaxial conductive member and the mounting plate according to the present invention;
the radio frequency coaxial connector main body framework is composed of three parts, the middle part is provided with a mounting plate 1, two sides of the mounting plate 1 are symmetrically clamped and connected with cover plates 3 with the same structure, and when the three parts are connected, a cuboid plate-shaped radio frequency coaxial connector main body can be formed;
the mounting plate 1 is connected with 6 groups of coaxial conductive pieces 2, each group of coaxial conductive pieces 2 comprises a signal sheet 21, a first grounding sheet 22 and a second grounding sheet 23, the two grounding sheets are symmetrically arranged at the top and the bottom of the signal sheet, the two grounding sheets have the same structure, the length of the input end of the signal sheet 21 is smaller than that of the input end of the grounding sheet, and the input end part of each conductor is of an inverted-right-angle structure, so that the insertion and the conduction are facilitated; the signal sheet 21 is used for transmitting signals, and the two grounding sheets are used for grounding protection;
the signal sheet 21 is sequentially composed of a first straight line section, a first turning section, a second straight line section, a second turning section and a third straight line section which are obliquely arranged, the first straight line section and the third straight line section are vertically distributed, the third straight line section is an output end of a conductor, and the end part of each third straight line section is provided with a fisheye elastic plug-in;
the mounting plate 1 is provided with three fixed rods, and a first straight line segment of each coaxial conductive piece 2 is fixed inside the first fixed rod; the second fixing rod is arranged at one side of the first fixing rod in parallel and used for continuously fixing the first straight line segments of the coaxial conductive parts 2; the third fixing rod is obliquely arranged and used for fixing the second straight line section; the first bending section is positioned between the second fixing rod and the third fixing rod; the mounting plate 1 is a base of each fixed rod, and the third straight line section fixedly penetrates through the mounting plate; clamping columns for clamping connection are vertically arranged on two side surfaces of the fixed rod;
the cover plate 3 is an outer shell part of the connector, the inner wall of the cover plate 3 is provided with 6 assembling grooves 31 and 6 preformed grooves 33 from top to bottom, the input end of each preformed groove 33 is oppositely arranged on one assembling groove 31, and the assembling grooves 31 and the preformed grooves 33 are connected into a whole and positioned at the same axis; the section of the assembling groove 31 is semicircular to facilitate the insertion of cylindrical outer end heads, the number of the outer end heads is 6, and the outer end heads are arranged opposite to the assembling groove 31 and are positioned on the same axis;
an input portion inside the fitting groove 31 for placing a first straight line of the inner ground pad; the section of the preformed groove 33 can be made into various shapes according to the processing requirement, and the inside of the preformed groove 33 is used for placing the rest part of the inner grounding piece;
the inner wall of each reserved groove 33 is sprayed with a continuous and compact conductive coating 4, the conductive coating 4 is exemplified by aluminum particles, and the production cost can be reduced on the basis of ensuring the conductive performance; the conductive coating 4 is used for forming an outer protective layer, so that interference signals are prevented from entering the inner layer, loss of transmission signals is reduced, loss in signal transmission is reduced, and external interference signals can be guided into the ground through the outer protective layer; the conductive coating 4 can be sprayed into any shape, meets the conductive requirement, and has wide application range and low cost;
as shown in fig. 4, fig. 4 is a schematic cross-sectional structure diagram of a first embodiment of the rf coaxial connector of the present invention;
in this embodiment, the preformed groove 33 includes a middle groove 331, a first side groove 332 and a second side groove 333, the division rule of the segments is determined by the cross-sectional shape, the top of the middle groove 331 is connected with the first side groove 332, the bottom of the middle groove is connected with the second side groove 333, and the middle groove and the two side grooves can be formed at one time when the cover plate 3 is poured; the first side grooves 332 and the second side grooves 333 are respectively provided with only one conductive surface, the conductive surfaces are planar and are distributed in parallel with the cover plate 3, the first grounding sheet 22 is attached between the two first side grooves 332 in parallel, and the second grounding sheet 23 is attached between the two second side grooves 333 in parallel; middle groove 331 constitutes for three continuous conducting surface, and the cross-section of three conducting surface constitutes minor face and two sides in the isosceles trapezoid, and the length of side and minor face is the same, and wherein minor face and apron 3 parallel arrangement, the side that is located the top connect first side groove 332, and the side that is located the below connects second side groove 333, and middle groove adopts the isosceles trapezoid structure can guarantee coaxial while, reduces the angle of junction for at the connectivity, the compactness of conductive paint in the corner better during spraying.
When the installation, insulating blend stop 34 on two apron 3 can be in the same place the laminating, forms the separation structure, and the outer terminal surface veneer of insulating blend stop 34 has the flexible insulating layer that insulating flame retardant rubber made, can make the laminating inseparabler, and the connection effect is better.
As shown in fig. 5, fig. 5 is a schematic cross-sectional structure diagram of a second embodiment of the rf coaxial connector of the present invention;
illustratively, the middle groove 331 can also be processed into a semi-circle shape, when the two cover plates are assembled, the two cover plates form a circle shape, the coaxial arrangement can also be ensured, and the semi-circle can be processed more conveniently and at lower cost.
In the implementation of the above-described embodiments,
forming an assembly groove and a reserved groove in required shapes on the die, and processing the middle groove into an isosceles trapezoid or a semicircle; then pouring the molten raw materials into a mould for pouring and forming to form the required cover plate 3;
attaching release paper to the area, which is not required to be sprayed with the conductive coating, on the cover plate 3, and spraying the conductive coating on the inner wall of the reserved groove 33 by using 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 the matrix to generate physical deformation; 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 33, and the conductive coating 4, the reserved grooves 31 and the assembling grooves 33 are positioned on the same axis; finally, tearing off the release paper;
then clamping the mounting plate 1 with one cover plate 3, ensuring that the coaxial conductive piece 2 is coaxially arranged with the assembling groove 31 and the fixing groove 32, and then buckling the other cover plate; finally, inserting the outer end head into the assembling groove 31, so that the grounding sheet inside the outer end head is electrically connected with the grounding sheet of the coaxial conductive piece, and the signal sheet of the outer end head is electrically connected with the signal sheet of the coaxial conductive piece;
when the coaxial conductive device works, current is conducted into the coaxial conductive piece 2 from the outer end, the signal piece 21 transmits signals, the first grounding piece 22 and the second grounding piece 23 conduct the current to the conductive coating 4 on the inner wall of the side groove, so that the whole conductive coating 4 is in a conductive state, the conductive coating 4 in the conductive state forms an outer protective layer outside the signal piece 21, the outer protective layer can seal an electromagnetic field generated by the signal piece 21 in the outer protective layer, the electromagnetic field is prevented from being interfered to other groups of coaxial conductive pieces, and the signal transmission effect is enhanced; the signal is finally conducted to other devices through the fish-eye structure at the end of the signal sheet 21.
The manufacturing method of the radio frequency coaxial 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, uniformly and compactly spraying the conductive coating to each position of the reserved groove by using a spraying device;
s1.3, forming a conductive coating on the inner wall of the reserved groove by using the conductive coating, and tearing off release paper;
s2, assembling and forming:
the two cover plates are symmetrically clamped on two sides of the mounting plate, so that the conductive coating forms a complete outer protective layer outside the coaxial conductive piece, and the grounding part of the coaxial conductive piece is fully attached and contacted with the conductive coating; the signal transmission part of the coaxial conductive piece is coaxially arranged with the conductive coating at intervals; the conductive coating can also meet the requirement of the coaxial connector on coaxiality while being prepared.
As an improvement of the above technical solution, the conductive coating is uniformly and densely sprayed to each position of the pre-groove, specifically:
s1.2.1, matching an optimal thickness range X according to the cross section shape of the reserved groove;
s1.2.2, judging whether the area corresponding to the outlet of the spraying device is a straight line section;
if yes, the fact that the spraying device is spraying the straight line section of the reserved groove at the moment is shown, the spraying device evenly sprays the conductive coating to the inner wall of the straight line section of the reserved groove until the thickness of the coating of the straight line section reaches h1
If not, the spraying device is used for spraying the turning section of the reserved groove, and the spraying device is used for uniformly spraying the conductive coating to the inner wall of the turning section of the reserved groove until the thickness of the coating of the straight line section reaches h2Wherein h is1＞h2，h1、h2Are all positioned in X;
the angles between the conductive surfaces of the sections with different shapes are different, and in order to ensure continuity and compactness, the corresponding spraying thicknesses are also different, and the larger the angle is, the thicker the thickness is; the sectional spraying of the reserved groove is used for ensuring the continuity and compactness of the turning section, and the adhesion effect of metal particles in the spraying is influenced because the turning section has a certain angle, so the set thickness of the reserved groove is slightly larger than that of a straight line section in a proper range, and the compactness can be ensured; the preparation of the conductive outer protective layer is realized in a spraying mode, the preparation requirement of any shape can be met, the processing cost is low, and the forming effect is good;
as an improvement of the above technical solution, the spraying thickness is in direct proportion to the discharge speed of the spraying device; determining the optimal spraying thickness corresponding to the area to be sprayed, and adjusting the spraying device to a proper discharging speed to enable the thickness of the sprayed conductive coating to be optimal; when the discharge speed is changed, more or fewer particles are ejected per unit time, and the thickness of the coating formed is increased or decreased.
As an improvement of the above technical solution, the formula for adjusting the discharging speed is as follows:
v＝hv0s/kd (1)
in the above formula (1): h represents the optimum thickness of the conductive coating in the machining area; k is an adjustment coefficient; v represents the discharge speed of the spray device; v. of0The translation speed of the spraying device during spraying is represented as a constant value; s represents the cross-sectional area of the effective spray area.
The derivation process in the above formula (1) is: the total amount Q of the coating material sprayed by the spraying device in the interval1：
Q1＝tv＝dv/v0(2)
In the above formula (2): t represents the interval spraying time; d represents the interval displacement length; v represents the discharge speed of the spray device; v. of0Represents the translation speed of the spraying device during spraying and is a constant value.
Due to the arrangement of the release paper, the sprayed coating is not completely sprayed on the assembly groove 31, so that an adjustment coefficient k needs to be introduced, wherein k is the ratio of the effective spraying area to the whole spraying area; exemplary are: when the area of the assembly groove is sprayed, the ratio of the sectional area of the assembly groove to the whole coverage area of the spraying device is calculated; the effective spray coating amount Q thus calculated is Q1k＝kdv/v0；
The effective spraying coating amount Q is the same as the volume of the conductive coating formed in the effective area, and Q is sh; h can be determined by multiple experiments; finally, deriving formula (1);
as shown in fig. 6, fig. 6 is a schematic structural diagram illustrating a spraying state of the cover plate of the present invention;
the spraying device 5 comprises a storage tank 51, a pumping pump 52, a conveying hose 53, a discharging plate 54 and a guide rail 55, wherein the discharging plate 54 is slidably connected with the guide rail 55, the discharging plate 54 moves on the guide rail 55 at a uniform speed, the discharging plate 54 is intersected with the cover plate 3 at intervals, the outlet length of the discharging plate 54 is the same as the width of the cover plate 3, the inlet end of the discharging plate 54 is communicated to the pumping pump 52 through the conveying hose 53, the pumping pump 52 is communicated to the storage tank 51, fine aluminum powder particles are stored in the storage tank 51, and a microprocessor is mounted on the outer wall of the storage tank 51; the discharge plate 54 is externally connected with a high-pressure gas input device.
In the implementation of the above-described embodiments,
placing the cover plate 3 on an adsorption clamp, and positioning the cover plate 3 by a sucker of the adsorption clamp;
illustratively, the section of the preformed groove is isosceles trapezoid, and X is 0.03mm-0.08 mm; the spraying thickness of the straight line section is 0.05mm, the spraying thickness of the turning section is 0.06mm, and the moving speed v is determined by the working personnel0The length d of each section, the proportionality coefficient K and the area s of each region finally obtain the spraying speed v corresponding to each region, that is, the working speed v of the material pump 52 on the first straight line section and the second straight line section of the preformed groove is1(ii) a The working speed of the first turning section and the second turning section is v2(ii) a Then the working speeds of the material pumping pump 52 in different intervals are recorded into the microprocessor in sequence, and the sequence is v1、v2、v1、v2、v1(ii) a Setting the working speed and the duration of the pumping pump 52 in each time period, and automatically regulating and controlling the pumping pump 52 by the microprocessor;
the discharging plate 54 moves along the guide rail 55 to machine the reserve tank 33, and when the discharging plate enters a first straight line section in the reserve tank 33, the microprocessor regulates and controls the pumping pumps 52 to v1The aluminum powder is pumped into the discharging plate 54, accelerated to the critical speed of 700m/s through a high-pressure cavity and a LAVAL nozzle in the discharging plate 54, and finally sprayed out, and a conductive coating with the thickness of 0.5mm is sprayed at the first straight line segment; then enters a first turning section, and the microprocessor regulates and controls the material pumping pump 52 to v2Spraying a conductive coating with the thickness of 0.6mm at the first turning section; then enters a second straight line segment, and the microprocessor regulates and controls the material pumping pump 52 to v1Spraying a conductive coating with the thickness of 0.5mm at the second straight line section; then enters a second turning section, and the microprocessor regulates and controls the material pumping pump 52 to v2Spraying a conductive coating of 0.6mm at the second turning section; finally, the third straight line segment is entered, and the microprocessor regulates and controls the material pumping pump 52 to v1And spraying a conductive coating of 0.5mm at the third straight section.
When the working frequency is 12.5Ghz, the variation range of the crosstalk of the adjacent coaxial conductive parts is 10-20 db;
the connector obtained through the preparation process can adjust crosstalk to 40db-60db 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 (7)
1. The radio frequency coaxial connector with the special-shaped conductive structure comprises a mounting plate; coaxial conductive pieces are arranged in the mounting plate, and a plurality of groups of coaxial conductive pieces are arranged; cover plates are symmetrically arranged on two sides of the mounting plate; the method is characterized in that: the inner wall of the cover plate is provided with a plurality of reserved grooves at intervals, the input end of each reserved groove is provided with an assembly groove, and the coaxial conductive piece sequentially penetrates through the assembly grooves and the central line of each reserved groove; the area between the adjacent assembling grooves is an insulating barrier strip;
the inner walls of the reserved grooves are provided with continuous and compact conductive coatings, the coaxial conductive piece comprises a grounding part and a signal transmission part, the grounding part is electrically connected with the conductive coatings, and the signal transmission part is arranged in the conductive coatings at intervals; the conductive coating is used for forming an outer protective layer outside the coaxial conductive piece; the assembly groove, the reserved groove, the conductive coating, the signal transmission part and the grounding part are coaxially arranged.
2. The rf coaxial connector with the profiled conductive structure of claim 1, wherein: coaxial electrically conductive piece includes signal piece, first grounding lug and second grounding lug, the signal piece does the signal transmission part, first grounding lug, second grounding lug do the grounding part, interval parallel arrangement between first grounding lug, signal piece and the second grounding lug, the signal piece is located between first grounding lug, the second grounding lug, the shape is the same between signal piece, first grounding lug and the second grounding lug, the signal piece comprises straight line portion and multistage turn part, conductive coating's distribution shape with the shape of signal piece is the same.
3. The rf coaxial connector with the profiled conductive structure of claim 2, wherein: the preformed groove includes middle groove, first side groove and second side groove, first side groove is connected to one side of middle groove, the second side groove is connected to the opposite side of middle groove, first side groove, second side groove all with apron parallel arrangement, the signal piece interval is arranged in two axis department between the middle groove, first ground lug parallel laminating is arranged in two between the first side groove, second ground lug parallel laminating is arranged in two between the second side groove.
4. The rf coaxial connector with the profiled conductive structure of claim 3, wherein: the cross section of the cavity surrounded by the two middle grooves is a regular polygon or a circle.
5. The radio frequency coaxial connector with the profiled conductive structure of claim 4, wherein: the middle 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 each side edge is equal to that of each short side, the short sides are arranged in parallel with the cover plate, the side edges above the short sides are connected with the first side grooves, and the side edges below the short sides are connected with the second side grooves.
6. The radio frequency coaxial connector with the profiled conductive structure according to any one of claims 3 to 5, wherein: two of relative setting laminate the assembly between the insulating blend stop, the lateral surface of insulating blend stop is flexible insulating layer.
7. The rf coaxial connector with the profiled conductive structure of claim 6, wherein: a plurality of fixing grooves are formed in the cover plate, each fixing groove is intersected with each reserved groove, a plurality of fixing rods are arranged on the mounting plate, the fixing rods are oppositely clamped and embedded into the fixing grooves, and a plurality of groups of coaxial conductive pieces penetrate through the fixing rods.
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| CN201921121505.8U CN210326376U (en) | 2019-07-17 | 2019-07-17 | Radio frequency coaxial connector with special-shaped conductive structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323622A (en) * | 2019-07-17 | 2019-10-11 | 上海航天科工电器研究院有限公司 | Radio frequency (RF) coaxial connector and preparation method thereof with special-shaped conductive structure |
| TWI736338B (en) * | 2020-05-27 | 2021-08-11 | 大陸商東莞立訊技術有限公司 | A terminal structure and a connector |
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2019
- 2019-07-17 CN CN201921121505.8U patent/CN210326376U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323622A (en) * | 2019-07-17 | 2019-10-11 | 上海航天科工电器研究院有限公司 | Radio frequency (RF) coaxial connector and preparation method thereof with special-shaped conductive structure |
| TWI736338B (en) * | 2020-05-27 | 2021-08-11 | 大陸商東莞立訊技術有限公司 | A terminal structure and a connector |
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