CN114824762B - Double-layer metal bracket-based dual-band GNSS antenna - Google Patents
Double-layer metal bracket-based dual-band GNSS antenna Download PDFInfo
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- CN114824762B CN114824762B CN202210549735.4A CN202210549735A CN114824762B CN 114824762 B CN114824762 B CN 114824762B CN 202210549735 A CN202210549735 A CN 202210549735A CN 114824762 B CN114824762 B CN 114824762B
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- 239000002184 metal Substances 0.000 title claims abstract description 111
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 111
- 238000007789 sealing Methods 0.000 claims description 84
- 239000010410 layer Substances 0.000 claims description 37
- 239000003292 glue Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 16
- 239000002355 dual-layer Substances 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 8
- 230000000694 effects Effects 0.000 abstract description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 description 14
- 238000006722 reduction reaction Methods 0.000 description 10
- 239000002390 adhesive tape Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Details Of Aerials (AREA)
Abstract
The invention discloses a double-band GNSS antenna based on a double-layer metal support, which belongs to the field of communication devices and comprises a device shell, wherein a first circuit board is arranged in the device shell, a first metal support is arranged right above the first circuit board, a first feed pin is fixedly connected to the lower surface of the first metal support, first pins are fixedly connected to four sides of the first metal support, the bottom ends of the four first pins are fixedly connected with the first circuit board, a second circuit board is arranged right above the first metal support, a second metal support is arranged right above the second circuit board, the four sides of the second metal support are fixedly connected with the second pins, the bottom ends of the four second pins are fixedly connected with the second circuit board, and through holes are formed in the first metal support, so that the effect of improving the stability of the device can be achieved while the production cost of a product is reduced.
Description
Technical Field
The invention relates to the field of communication devices, in particular to a dual-band GNSS antenna based on a dual-layer metal bracket.
Background
The GNSS antenna is mainly used as a transmitting antenna of the same-frequency forwarding system, and the antenna consists of a radome, a microstrip radiator, a bottom plate, a high-frequency output socket and the like, and is used as a receiving antenna of the GPS navigation and positioning system.
The realization structure of the dual-frequency antenna is usually a double-layer ceramic plate, and when the ceramic antenna is manufactured, the ceramic antenna has the problems of higher production cost and poor stability due to heavy weight and complex manufacturing process.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a dual-band GNSS antenna based on a dual-layer metal bracket, which can realize the effect of improving the stability of the device while reducing the production cost of products.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The utility model provides a dual-band GNSS antenna based on double-deck metal support, includes the device shell, install first circuit board in the device shell, be equipped with first metal support directly over the first circuit board, the lower fixed surface of first metal support is connected with first feed pin, the equal fixedly connected with in four sides of first metal support first pin and the bottom of four first pins all with first circuit board fixed connection, be equipped with the second circuit board directly over the first metal support, be equipped with the second metal support directly over the second circuit board, the four sides fixedly connected with second pin of second metal support and the bottom of four second pins all with second circuit board fixed connection, set up the through-hole on the first metal support, the top and the second circuit board fixed connection of through-connection second feed pin and second feed pin, the opposite side fixedly connected with four double-sided adhesive tape piece of second circuit board and first metal support and four double-sided adhesive tape piece are the rectangle and distribute.
Further, four threaded rings are fixedly connected to the opposite sides of the second circuit board and the first metal support, close to four corners, sealing covers are screwed in the threaded rings on the first metal support, sealing cylinders are screwed in the threaded rings on the second circuit board, and the bottom ends of the sealing cylinders are in limiting sliding connection with the sealing covers.
Further, a partition layer is fixedly connected in the sealing cylinder, and liquid glue is filled at one side of the partition layer opposite to the sealing cover.
Furthermore, the side of the partition layer, which is opposite to the sealing cover, is filled with reducing copper powder, and the partition layer is made of a waterproof breathable film.
Further, four through grooves corresponding to the threaded rings are formed in the upper surface of the first circuit board, a limiting sleeve is fixedly connected in each through groove, a limiting shaft is connected in each limiting sleeve in a limiting sliding mode, the top ends of the limiting shafts penetrate through the upper surface of the device shell, and the bottom ends of the four limiting sleeves are all in fit connection with one side, opposite to the sealing cover, of the sealing cylinder.
Further, the material of limit sleeve and seal cylinder is metallic copper, limit sleeve's inner wall and spacing axle's arc profile are smooth surface.
Further, the outer surface of the limiting shaft is coated with thermochromic powder, and the color change temperature of the thermochromic powder is 40 ℃.
Further, the arc-shaped outlines of the four sealing cylinders are all connected with connecting blocks through pin shafts, the opposite sides of the four connecting blocks are all connected with grapples through pin shafts, and the inner walls of the grapples are respectively clamped with the opposite sides of the first metal support.
Further, the upper surfaces of the four sealing covers are fixedly connected with flow blocking blocks, the flow blocking blocks are semicircular, the inner walls of the four flow blocking blocks are oppositely arranged, the upper surfaces of the sealing covers are provided with flow guide grooves, and the flow guide grooves are located on the other side far away from the flow blocking blocks.
Further, the first metal stent has a size of 28×28×6.0mm, and the second metal stent has a size of 50×50×6mm.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme is through replacing traditional two-layer potsherd into first metal support and second metal support to carry out fixed connection with first circuit board and second circuit board respectively, then reach the effect of carrying out basic fixed and adjusting the frequency to the device through first pin and second pin, glue second circuit board and first metal support through four double faced adhesive tape afterwards, reach convenient quick equipment, reduce the effect of manufacturing process, form complete double-frequency channel circuit through first feed pin and second feed pin, compare traditional two-layer potsherd, reach the effect of reduction cost of manufacture and reduction device weight.
(2) According to the scheme, the sealing cylinder and the sealing cover are in limiting sliding connection, and then the threaded rings are matched with the threaded rings in threaded connection respectively, so that the stability of connection between the first circuit board and the first metal can be improved. Through at sealed section of thick bamboo internal fixation connection separating layer to fill liquid glue in the side of the sealed lid relatively of separating layer, receive vibrations or striking when the device, make the double faced adhesive tape piece break away from, cause first circuit board and first metal support to take place to separate, at this moment, take place to separate between sealed section of thick bamboo and the sealed lid, thereby make the liquid glue that fills in sealed section of thick bamboo flow, bond again the double faced adhesive tape piece surface of separation, promote the stability effect between first metal support and the first circuit board, separate liquid glue and reduction copper powder through the separating layer of waterproof ventilated membrane material, make liquid glue when sealed section of thick bamboo and sealed lid do not take place to separate, avoid the air to get into, when sealed section of thick bamboo and sealed lid take place to separate, liquid glue flows out, air gets into in the separating layer, make reduction copper powder take place the reduction reaction, and then generate heat, the heat that the reaction sent can accelerate the solidification of glue, further strengthen the stability between first metal support and the first circuit board.
(3) This scheme is all connected in laminating of one side of sealed lid with sealed section of thick bamboo dorsad through limit sleeve's bottom, after the reduction copper powder takes place to react and generates heat, heat can be through in the seal barrel conduction gets into limit sleeve, because limit shaft in the limit sleeve and limit sleeve limit bit sliding connection, make the air pressure increase of seal in the limit sleeve, and then promote limit shaft upward movement and stretch out the device shell, reach the warning effect, remind the user to overhaul in time, through scribble the temperature sensing powder that discolours at the outward appearance of limit shaft, and the temperature that discolours of this powder is 40 degrees, can reach when limit shaft is heated to the degree, the temperature sensing powder that discolours begins to discolour, further promoted the warning effect of limit shaft, make things convenient for personnel to discover and overhaul in time.
(4) According to the scheme, the inner walls of the four grapples are respectively clamped with the two opposite sides of the first metal support, so that when the sealing cylinder is separated from the sealing cover, the sealing cylinder moves upwards and drives the connecting block to move upwards, the grapples can stably grasp the first metal support, and the problem that the first circuit board is suddenly broken with the first metal support under external force is avoided.
(5) According to the scheme, the flow blocking blocks are fixedly connected to the upper surfaces of the four sealing covers, the inner walls of the flow blocking blocks are arranged relatively, when the sealing cylinders are separated upwards, the liquid glue just flows to the double-sided tape blocks, the liquid glue is prevented from directly flowing out of the device shell, the flow guiding grooves are formed in the upper surfaces of the sealing covers and located on the other sides of the flow blocking blocks, the better flow guiding effect can be achieved, the liquid glue flows to the double-sided tape blocks, and accordingly the bonding effect of the liquid glue to the double-sided tape blocks is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the first circuit board and the second circuit board according to the present invention;
FIG. 3 is a schematic view of the structure of the first circuit board and the first metal bracket according to the present invention;
FIG. 4 is a schematic bottom view of a second circuit board according to the present invention;
FIG. 5 is a schematic view of the structure of the sealing cylinder and the sealing cover in the invention;
FIG. 6 is a schematic view showing the development of the structure of the seal cartridge and seal cap of the present invention;
FIG. 7 is a schematic view of a threaded ring structure according to the present invention;
FIG. 8 is a schematic view of the seal cartridge, connection block and hook configuration of the present invention;
FIG. 9 is a schematic cross-sectional view of the spacing sleeve and spacing shaft of the present invention;
FIG. 10 is a schematic view of the structure of the ceramic block according to the present invention.
The reference numerals in the figures illustrate:
1. a device housing; 2. a first circuit board; 3. a first metal bracket; 4. a first pin; 5. a second circuit board; 6. a second pin; 7. a second metal bracket; 8. a threaded ring; 9. a choke block; 10. sealing cover; 11. a sealing cylinder; 12. a barrier layer; 13. a double-sided adhesive block; 14. a connecting block; 15. a grapple; 16. a diversion trench; 17. a limit sleeve; 18. a limiting shaft; 19. thermochromic powder; 20. a through hole; 21. a first feed pin; 22. a second feed pin; 23. a ceramic block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1, 2, 3 and 4, a dual-band GNSS antenna based on a dual-layer metal bracket includes a device housing 1, a first circuit board 2 is mounted in the device housing 1, a first metal bracket 3 is disposed right above the first circuit board 2, a first feeding pin 21 is fixedly connected to a lower surface of the first metal bracket 3, four sides of the first metal bracket 3 are fixedly connected to first pins 4, bottom ends of the four first pins 4 are fixedly connected to the first circuit board 2, a second circuit board 5 is disposed right above the first metal bracket 3, a second metal bracket 7 is disposed right above the second circuit board 5, four sides of the second metal bracket 7 are fixedly connected to second pins 6, bottom ends of the four second pins 6 are fixedly connected to the second circuit board 5, through holes 20 are formed in the first metal bracket 3, the second feed pin 22 is connected in the through hole 20 in a penetrating way, the top end of the second feed pin 22 is fixedly connected with the second circuit board 5, the opposite side of the second circuit board 5 and the first metal bracket 3 is fixedly connected with four double-sided adhesive blocks 13, the four double-sided adhesive blocks 13 are distributed in a rectangular shape, the traditional two layers of ceramic plates are replaced by the first metal bracket 3 and the second metal bracket 7 and are respectively and fixedly connected with the first circuit board 2 and the second circuit board 5, then the effect of basically fixing and adjusting the frequency of the device is achieved through the first pin 4 and the second pin 6, then the second circuit board 5 and the first metal bracket 3 are bonded through the four double-sided adhesive blocks 13, the effect of convenient and rapid assembly is achieved, the manufacturing process is reduced, compared with the traditional two layers of ceramic plates, a complete double-frequency circuit is formed through the first feed pin 21 and the second feed pin 22, the effects of reducing the manufacturing cost and the weight of the device are achieved.
Referring to fig. 3, fig. 4 and fig. 5, four threaded rings 8 are fixedly connected to the opposite sides of the second circuit board 5 and the first metal support 3 near four corners, a sealing cover 10 is screwed in the threaded ring 8 on the first metal support 3, a sealing cylinder 11 is screwed in the threaded ring 8 on the second circuit board 5, the bottom end of the sealing cylinder 11 is in sliding connection with the sealing cover 10 in a limiting manner, and the stability of connection between the first circuit board 2 and the first metal can be improved by matching with the threaded rings 8 which are respectively screwed in a limiting sliding connection relationship between the sealing cylinder 11 and the sealing cover 10.
Referring to fig. 6, a partition layer 12 is fixedly connected to the inside of the sealing cylinder 11, the partition layer 12 is filled with liquid glue at one side of the sealing cover 10 opposite to the sealing cover 10, the partition layer 12 is fixedly connected to the inside of the sealing cylinder 11, and the liquid glue is filled at one side of the partition layer 12 opposite to the sealing cover 10, when the device is vibrated or impacted, the double-sided tape block 13 is separated, so that the first circuit board 2 and the first metal bracket 3 are separated, at this time, the sealing cylinder 11 and the sealing cover 10 are separated, so that the liquid glue filled in the sealing cylinder 11 flows out, the surface of the separated double-sided tape block 13 is bonded again, and the stability effect between the first metal bracket 3 and the first circuit board 2 is improved.
Referring to fig. 6, the partition layer 12 is filled with the reducing copper powder on one side of the sealing cover 10 opposite to the partition layer 12, the partition layer 12 is made of a waterproof and breathable film, and the liquid glue and the reducing copper powder are separated by the partition layer 12 made of the waterproof and breathable film, so that the partition layer 12 is avoided when the sealing cylinder 11 is not separated from the sealing cover 10, air is prevented from entering, when the sealing cylinder 11 is separated from the sealing cover 10, the liquid glue flows out, the air enters the partition layer 12, the reducing copper powder is subjected to a reduction reaction, heat generated by the reaction can accelerate the solidification of the glue, and the stability between the first metal bracket 3 and the first circuit board 2 is further enhanced.
Referring to fig. 2 and 8, four through grooves corresponding to the threaded ring 8 are formed in the upper surface of the first circuit board 2, a limiting sleeve 17 is fixedly connected in each through groove, a limiting shaft 18 is connected in each limiting sleeve 17 in a limiting sliding manner, the top ends of the limiting shafts 18 penetrate through the upper surface of the device shell 1, the bottom ends of the four limiting sleeves 17 are respectively connected with the sealing cylinder 11 in a laminating manner on one side opposite to the sealing cover 10, the bottom ends of the limiting sleeves 17 are respectively connected with the sealing cylinder 11 in a laminating manner on one side opposite to the sealing cover 10, after the reductive copper powder reacts and heats, heat is conducted into the limiting sleeves 17 through the sealing cylinder 11, and due to the fact that the limiting shafts 18 in the limiting sleeves 17 are in limiting sliding connection with the limiting sleeves 17, the air pressure intensity sealed in the limiting sleeves 17 is increased, the limiting shafts 18 are pushed to move upwards and extend out of the device shell 1, a warning effect is achieved, and a user is reminded of timely maintenance.
Referring to fig. 8, the material of the limiting sleeve 17 and the sealing cylinder 11 is metal copper, the arc-shaped contours of the inner wall of the limiting sleeve 17 and the limiting shaft 18 are smooth surfaces, the metal copper is used as the material of the limiting sleeve 17 and the sealing cylinder 11, so that the limiting sleeve 17 and the sealing cylinder 11 can better conduct out the heat generated by the reaction of the reducing copper powder and the air by utilizing good heat conductivity of the copper, and then the arc-shaped contours of the inner wall of the limiting sleeve 17 and the limiting shaft 18 are smooth surfaces to achieve the sealing effect between the two, and further the limiting shaft 18 is pushed to move upwards after the limiting sleeve 17 is heated.
Referring to fig. 8, the outer surface of the limiting shaft 18 is coated with thermochromic powder 19, the color change temperature of the thermochromic powder 19 is 40 degrees, and by coating the outer surface of the limiting shaft 18 with thermochromic powder 19, the color change temperature of the thermochromic powder is 40 degrees, the thermochromic powder 19 starts to change color when the limiting shaft 18 is heated to 40 degrees, so that the warning effect of the limiting shaft 18 is further improved, and personnel can find and overhaul in time conveniently.
Referring to fig. 2 and 8, the arc-shaped outlines of the four sealing drums 11 are all connected with connecting blocks 14 through pin shafts, one sides of the four connecting blocks 14 opposite to each other are all connected with a grapple 15 through pin shafts, the inner walls of the grapple 15 are respectively clamped with two opposite sides of the first metal support 3, and the inner walls of the four grapples 15 are respectively clamped with two opposite sides of the first metal support 3, so that when the sealing drums 11 are separated from the sealing covers 10, the sealing drums 11 move upwards and drive the connecting blocks 14 to move upwards, and the grapple 15 can stably grasp the first metal support 3, so that the problem that the first circuit board 2 is suddenly broken with the first metal support 3 under external force is avoided.
Referring to fig. 3 and 6, the upper surfaces of the four sealing covers 10 are fixedly connected with flow blocking blocks 9, the shape of the flow blocking blocks 9 is semicircular, the inner walls of the four flow blocking blocks 9 are oppositely arranged, the upper surfaces of the sealing covers 10 are provided with flow guiding grooves 16, the flow guiding grooves 16 are located at the other side far away from the flow blocking blocks 9, the upper surfaces of the four sealing covers 10 are fixedly connected with the flow blocking blocks 9, the inner walls of the flow blocking blocks 9 are oppositely arranged, when the sealing cylinders 11 are separated upwards, liquid glue just flows to the positions of the double-sided adhesive blocks 13, the liquid glue is prevented from directly flowing out of the device shell 1, better flow guiding effect can be achieved by arranging the flow guiding grooves 16 on the upper surfaces of the sealing covers 10 and the flow guiding grooves 16 are located at the other side far away from the flow blocking blocks 9, and accordingly the bonding effect of the liquid glue to the double-sided adhesive blocks 13 is improved.
Referring to fig. 2, the dimensions of the first metal frame 3 are 28×28×6.0mm, the dimensions of the second metal frame 7 are 50×50×6mm, and the weight and manufacturing cost of the device can be reduced while ensuring the normal use of the device by the dimensions of the first metal frame 3 and the second metal frame 7 being 28×28×6.0mm and 50×50×6mm, respectively.
Example 2:
in this embodiment, the second metal bracket in embodiment 1 may be replaced with a ceramic block as compared with embodiment 1.
Referring to fig. 10, a dual-band GNSS antenna based on a dual-layer metal bracket includes a device housing 1, and is characterized in that: install first circuit board 2 in the device shell 1, be equipped with first metal support 3 directly over first circuit board 2, the lower fixed surface of first metal support 3 is connected with first feed pin 21, the equal fixedly connected with of four sides of first metal support 3 is first pin 4 and the bottom of four first pins 4 all with first circuit board 2 fixed connection, be equipped with second circuit board 5 directly over first metal support 3, install ceramic block 23 directly over second circuit board 5, offer through hole 20 on the first metal support 3, through-connection has second feed pin 22 and the top and the 5 fixed connection of second circuit board in the through hole 20, second circuit board 5 is rectangular distribution with the four double-sided tape 13 of opposite side fixedly connected with of first metal support 3, through replacing low level large-volume ceramic plate with first metal support 3, upper ceramic plate remains, and carries out fixed connection with first circuit board 2 and second circuit board 5 respectively, then carry out frequency adjustment device through first pin 4 and second feed pin 22, it reaches the complete circuit board manufacturing effect of two-side board and second metal support 5, the effect of two-sided tape 13 is reached, the complete manufacturing cost is reduced to the double-sided tape is realized with the second circuit board, the manufacturing effect is fast, the double-sided tape device is realized with the second circuit board is convenient, the two-sided tape carrier device is convenient, and the cost is reduced.
By the ceramic block 23 having a size of 25 x 4mm and the first metal support having a size of 50 x 6mm, the weight and manufacturing cost of the device can be reduced while ensuring normal use of the device.
Working principle: through replacing traditional two-layer ceramic wafer into first metal support 3 and second metal support 7 to carry out fixed connection with first circuit board 2 and second circuit board 5 respectively, then reach the effect of carrying out basic fixed and adjusting the frequency to the device through first pin 4 and second pin 6, glue second circuit board 5 and first metal support 3 through four double faced adhesive tape piece 13 afterwards, reach convenient quick equipment, reduce the effect of manufacturing process, form complete double frequency channel circuit through first feed pin 21 and second feed pin 22, compare traditional two-layer ceramic wafer, reach the effect of reduction cost of manufacture and reduction device weight.
Through the spacing sliding connection relation between seal tube 11 and the sealed lid 10, and then the cooperation is threaded ring 8 of spiro union respectively, can reach the stability of promoting being connected between first circuit board 2 and the first metal and make things convenient for dismouting change, through at seal tube 11 internal fixation separates layer 12, and fill liquid glue in the side of separating layer 12 relative sealed lid 10, when the device receives vibrations or striking, make double faced adhesive tape piece 13 take place to break away from, cause first circuit board 2 and first metal support 3 to take place the separation, at this moment, take place the separation between seal tube 11 and the sealed lid 10, thereby make the liquid glue that fills in seal tube 11 flow out, bond again the double faced adhesive tape piece 13 surface of separation, promote the stability effect between first metal support 3 and the first circuit board 2.
The liquid glue and the reducing copper powder are separated through the separation layer 12 made of the waterproof breathable film material, so that the liquid glue is prevented from entering the separation layer 12 when the sealing cylinder 11 is not separated from the sealing cover 10, air is prevented from entering the separation layer 12, when the sealing cylinder 11 is separated from the sealing cover 10, the liquid glue flows out, the air enters the separation layer 12, the reducing copper powder is subjected to reduction reaction, heat is generated, the solidification of the glue can be accelerated by heat generated by the reaction, and the stability between the first metal bracket 3 and the first circuit board 2 is further enhanced. The bottom of the limiting sleeve 17 is attached to one side of the sealing cover 10, which is opposite to the sealing barrel 11, after the reducing copper powder reacts to generate heat, heat can be conducted into the limiting sleeve 17 through the sealing barrel 11, and because the limiting shaft 18 in the limiting sleeve 17 is in limiting sliding connection with the limiting sleeve 17, the air pressure sealed in the limiting sleeve 17 is increased, the limiting shaft 18 is pushed to move upwards and stretch out of the device shell 1, the warning effect is achieved, the temperature sensing color changing powder 19 is coated on the outer surface of the limiting shaft 18, the color changing temperature of the color changing powder is 40 ℃, the color changing powder 19 starts to change when the limiting shaft 18 is heated to 40 ℃, the warning effect of the limiting shaft 18 is further improved, and people can find and overhaul timely conveniently.
The inner walls of the four grapples 15 are respectively clamped with the two opposite sides of the first metal bracket 3, so that when the sealing cylinder 11 is separated from the sealing cover 10, the sealing cylinder 11 moves upwards and drives the connecting block 14 to move upwards, the grapples 15 can stably grasp the first metal bracket 3, and the problem that the first circuit board 2 is suddenly broken with the first metal bracket 3 under external force is avoided.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (9)
1. Double-deck metal support-based dual-band GNSS antenna, including device shell (1), its characterized in that: the device is characterized in that a first circuit board (2) is arranged in the device shell (1), a first metal bracket (3) is arranged right above the first circuit board (2), the lower surface of the first metal bracket (3) is fixedly connected with first feed pins (21), four sides of the first metal bracket (3) are fixedly connected with first pins (4) and the bottom ends of four first pins (4) are fixedly connected with the first circuit board (2), a second circuit board (5) is arranged right above the first metal bracket (3), a second metal bracket (7) is arranged right above the second circuit board (5), four sides of the second metal bracket (7) are fixedly connected with second pins (6) and the bottom ends of four second pins (6) are fixedly connected with the second circuit board (5), through holes (20) are formed in the first metal bracket (3), second feed pins (22) are connected in a penetrating manner in the through holes (20) and are connected with the second feed pins (22) and are fixedly connected with the second feed blocks (13) which are opposite to the second metal bracket (5) in a rectangular shape, four threaded rings (8) are fixedly connected to the opposite sides of the second circuit board (5) and the first metal support (3) close to four corners, sealing covers (10) are screwed in the threaded rings (8) on the first metal support (3), sealing cylinders (11) are screwed in the threaded rings (8) on the second circuit board (5), and the bottom ends of the sealing cylinders (11) are in limiting sliding connection with the sealing covers (10).
2. A dual band GNSS antenna based on a dual layer metal bracket according to claim 1, wherein: a partition layer (12) is fixedly connected in the sealing cylinder (11), and liquid glue is filled on one side of the partition layer (12) opposite to the sealing cover (10).
3. A dual band GNSS antenna based on a dual layer metal bracket according to claim 2, wherein: the side of the partition layer (12) opposite to the sealing cover (10) is filled with reducing copper powder, and the partition layer (12) is made of a waterproof breathable film.
4. A dual band GNSS antenna based on a dual layer metal bracket according to claim 1, wherein: four through grooves corresponding to the threaded rings (8) are formed in the upper surface of the first circuit board (2), a limiting sleeve (17) is fixedly connected in each through groove, a limiting shaft (18) is connected in each limiting sleeve (17) in a limiting sliding mode, the top ends of the limiting shafts (18) penetrate through the upper surface of the device shell (1), and the bottom ends of the four limiting sleeves (17) are respectively connected with the sealing cylinder (11) in a laminating mode on one side of the sealing cover (10) in a back mode.
5. The dual band GNSS antenna based on a dual layer metal bracket of claim 4 wherein: the limiting sleeve (17) and the sealing cylinder (11) are made of metal copper, and the arc-shaped outlines of the inner wall of the limiting sleeve (17) and the limiting shaft (18) are smooth surfaces.
6. The dual band GNSS antenna based on a dual layer metal bracket of claim 4 wherein: the outer surface of the limiting shaft (18) is coated with thermochromic powder (19), and the thermochromic temperature of the thermochromic powder (19) is 40 ℃.
7. A dual band GNSS antenna based on a dual layer metal bracket according to claim 1, wherein: the arc-shaped outlines of the four sealing barrels (11) are all connected with connecting blocks (14) through pin shafts, one sides of the four connecting blocks (14) which are opposite are all connected with grapples (15) through pin shafts, and the inner walls of the grapples (15) are respectively clamped with two opposite sides of the first metal bracket (3).
8. A dual band GNSS antenna based on a dual layer metal bracket according to claim 1, wherein: the upper surfaces of the four sealing covers (10) are fixedly connected with flow blocking blocks (9), the shape of each flow blocking block (9) is semicircular, the inner walls of the four flow blocking blocks (9) are oppositely arranged, the upper surfaces of the sealing covers (10) are provided with flow guide grooves (16), and the flow guide grooves (16) are located at the other sides far away from the flow blocking blocks (9).
9. A dual band GNSS antenna based on a dual layer metal bracket according to claim 1, wherein: the first metal stent (3) has a size of 28 x 6.0mm and the second metal stent (7) has a size of 50 x 6mm.
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| CN202210549735.4A CN114824762B (en) | 2022-05-20 | 2022-05-20 | Double-layer metal bracket-based dual-band GNSS antenna |
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| CN114824762B true CN114824762B (en) | 2024-04-05 |
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| CN214477918U (en) * | 2021-02-22 | 2021-10-22 | 深圳市盛邦尔科技有限公司 | SMD GNSS antenna |
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| CN114824762A (en) | 2022-07-29 |
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