A shell-less kilometer-level pressure-resistant waterproof antenna

Abstract

A kind of shell-free kilometer level pressure-resistant waterproof antenna belongs to communication antenna technical field.It includes metal base, pedestal, circuit board, antenna, metal base is connected with pedestal, the top of pedestal is equipped with element slot, the center of metal base is equipped with pedestal wire hole corresponding to pedestal wire hole, circuit board is set on the top of pedestal corresponding to element slot, the top of circuit board is equipped with base rod, base rod, circuit board and pedestal are fixedly connected, the outer wall of base rod is also equipped with antenna slot, antenna is connected on circuit board and extends to the top of base rod along corresponding antenna slot, the bottom of circuit board is equipped with shielded cable, shielded cable extends to the outside of metal base, the outside of base rod and pedestal is equipped with waterproof coating.The contradiction between pressure resistance and signal attenuation caused by hard pressure-resistant shell of existing antenna is solved, production cost is low, while ensuring signal stability, better pressure resistance effect can be achieved through internal pressure bearing, can effectively adapt to kilometer level underwater environment, greatly improves practicality.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of shellless kilometer pressure resistant waterproof antenna, belong to communication antenna technical field. BACKGROUND

[0002] At present, satellite antenna is usually used in global positioning system or satellite communication system related equipment, and is also indispensable important component of ocean operation equipment or platform with real-time or quasi real-time data satellite communication transmission capability and global positioning capability. Since ocean is a three-dimensional space, ocean operation equipment or platform not only needs satellite communication or positioning on sea surface, but also needs to dive underwater operation. In this process, satellite antenna will also dive underwater with equipment or platform, which requires satellite antenna to have certain waterproof pressure resistance, to ensure that antenna is not damaged, not water leakage in the underwater environment up to 1000 meters, and to complete satellite signal transmission after rising to sea surface with equipment. In the prior art, satellite antenna is usually packaged in pressure-resistant waterproof shell. However, whether the antenna and monitoring equipment or platform are packaged in hard pressure-resistant shell as a whole, or the antenna is packaged in its own pressure-resistant shell, such technology faces the contradiction between the pressure resistance of hard shell and the strength and quality of antenna transceiving satellite communication signal. That is, on the one hand, it is expected to reduce the thickness of pressure-resistant shell or use non-metallic materials to reduce the obstruction and attenuation of pressure-resistant shell to antenna signal; on the other hand, it is expected to increase the thickness of pressure-resistant shell or use metal materials to improve the pressure resistance of antenna to meet the requirements of equipment or platform operation water depth. This contradiction, on the one hand, limits the operation ability of equipment and platform into deeper water, and on the other hand, greatly reduces the communication signal quality and communication efficiency of antenna on sea surface. This contradiction also makes the antenna waterproof pressure shell the weakest part of the whole system. Once the operation water depth of equipment exceeds the predetermined depth in some special cases, the increased water pressure will cause the antenna shell to be damaged, and then the antenna to be short-circuited, the satellite communication transmission to be invalid, and the use and safety of the whole system to be affected. If the value of communication data is considered, the loss caused by damaged satellite communication antenna will be higher.

[0003] As disclosed in Chinese patent (application publication No. CN106025542) discloses "a pressure-resistant antenna", including an elastic shell, a sealing joint is installed on one side of the elastic shell, and a through hole is provided on the sealing joint for the cable to pass through; a pressure-resistant inner shell is encapsulated in the elastic shell, an antenna is installed in the pressure-resistant inner shell, and a cable groove connecting the pressure-resistant inner shell and the through hole of the sealing joint is further arranged in the elastic shell. The cable electrically connected with the antenna passes out of the pressure-resistant antenna through the above-mentioned cable groove and the through hole of the sealing joint. Although the antenna improves the anti-impact and anti-mechanical fatigue ability of the antenna to a certain extent, it does not solve the contradiction between the pressure resistance of the hard shell and the strength and quality of the communication signal. With the increase of water pressure, the shell structure still has the risk of damage, and the stability of the cable groove part is not high, which is easy to deform and bend under the sea wave beating, causing unstable signal transmission and bending fatigue damage to the inside of the antenna.

[0004] In view of the above technical conditions, the applicant of the present application has made a lot of repeated and beneficial explorations, and finally the product has achieved effective results, and formed the technical scheme of the following internal pressure-bearing antenna. SUMMARY

[0005] In view of the above-mentioned deficiencies, the present application provides a shell-free kilometer-level pressure-resistant waterproof antenna, which has low production cost, ensures the quality of the communication signal, and achieves better pressure resistance effect through the internal pressure-bearing mode of the non-rigid waterproof shell. It can effectively adapt to the underwater kilometer-level environment and greatly improve the practicality.

[0006] To achieve the above-mentioned purposes, the following problems need to be solved: first, the overall internal pressure-bearing structure realizes the smooth and seamless support of the surface elastic waterproof coating by the micro-deformation internal pressure-bearing material under the condition of sharp change in depth, avoiding damage to the elastic waterproof coating under water pressure; second, the antenna signal directivity is uniform, avoiding the loss of communication signal caused by the antenna swinging with waves due to the strong antenna signal direction selectivity; third, under the premise of meeting the complete structure and electromagnetic performance of the antenna, the non-metallic material is used to enhance the mechanical strength of the antenna and the base as a whole, so that the antenna as a whole can withstand the bending damage caused by sea wave beating; fourth, the overall waterproof coating treatment and joint protection of the surface of various materials and other details and processes.

[0007] The application is realized by the technical scheme that the shell-free kilometer-level pressure-resistant waterproof antenna comprises a metal base, a pedestal, a circuit board and a rod-shaped antenna, the top end surface of the metal base is fixedly connected with the bottom end surface of the pedestal, the top of the pedestal is provided with an element groove, the element groove is communicated to the bottom of the pedestal through a pedestal wire hole arranged in the inside of the pedestal, the center of the metal base is provided with a base wire hole corresponding to the pedestal wire hole, the circuit board is arranged on the top of the pedestal corresponding to the element groove, the top of the circuit board is provided with a base rod of the rod-shaped antenna, the base rod, the circuit board and the pedestal are fixedly connected, the outer wall of the base rod is further provided with a helical antenna groove, the antenna is connected on the circuit board and extends to the top of the base rod along the corresponding antenna groove, the bottom of the circuit board is connected with a shield cable, the shield cable extends to the outside of the metal base through the element groove, the pedestal wire hole and the base wire hole respectively, and the outer side of the base rod and the pedestal is provided with a waterproof coating.

[0008] Further, the top end surface of the metal base and the bottom end surface of the pedestal are fixedly connected through a plurality of internal hexagonal bolts, the internal hexagonal bolts are located on the same circular track and are uniformly arranged.

[0009] Further, the metal base and the pedestal are provided with O-rings on the contact end surfaces in the inside of the circular track where the internal hexagonal bolts are located.

[0010] Further, the bottom of the pedestal is provided with a mounting groove, the pedestal comprises 316 stainless steel material, the element groove and the mounting groove are communicated through the pedestal wire hole arranged in the center of the pedestal, the shield cable extends to the outside of the metal base through the element groove, the pedestal wire hole, the mounting groove and the base wire hole respectively, and the bottom of the metal base is provided with external threads.

[0011] Further, the bottom of the base rod is provided with a plurality of positioning blind holes, the base rod comprises a kilometer-level high-pressure-resistant floating body material, the circuit board and the pedestal are further respectively provided with positioning holes vertically corresponding to the positions of the positioning blind holes of the base rod, the positioning blind holes and the positioning holes are provided with reinforcing ribs, the reinforcing ribs comprise ABS engineering plastic material, the reinforcing ribs are provided with two sections with different diameters, the smaller-diameter section is provided with external threads, the smaller-diameter section of the reinforcing ribs extends to the mounting groove through the circuit board and the pedestal, and the base rod, the circuit board and the pedestal are fixedly connected through a mounting nut, and the larger-diameter section of the reinforcing ribs is embedded in the positioning blind holes in the bottom of the base rod.

[0012] Further, the positioning blind holes are three and are uniformly arranged on the circular track with the center as the axis on the bottom of the base rod.

[0013] Further, the larger-diameter section of the reinforcing ribs is over-matched in the positioning blind holes in the bottom of the base rod, and the damping is strengthened through solidified adhesive.

[0014] Further, the four antenna slots are uniformly arranged and rotate in the same direction from bottom to top, the four antennas are arranged on the circuit board and connected to the four direction edges with an interval of 90 degrees, and the four antennas extend to the top of the base rod along the corresponding antenna slots.

[0015] Further, the top end surface of the base is provided with a smooth filling body at an angle with the vertically arranged base rod, the smooth filling body comprises a resin material, the waterproof coating is uniformly coated on the base rod, the smooth filling body and the outer side of the base, and the waterproof coating comprises a polyurea material.

[0016] Further, the top end surface of the base is provided with a smooth filling body at an angle with the vertically arranged base rod, the smooth filling body comprises a resin material, the waterproof coating is uniformly coated on the base rod, the smooth filling body and the outer side of the base, and the waterproof coating comprises a polyurea material.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The device has low production cost, can achieve better pressure resistance through internal pressure bearing while ensuring the quality of the communication signal, can effectively adapt to the underwater kilometer-level environment, and greatly improves the practicality;

[0019] 2. The waterproof coating can achieve waterproof effect, and the elastic material such as polyurea can realize certain damping effect on the overall structure when the sea waves strike;

[0020] 3. The O-ring arranged between the base and the metal base can prevent water from entering the mounting groove and then entering the internal space such as the component groove through the joint surface between the metal base and the base;

[0021] 4. The reinforcing rib can connect the base rod and the base into one body, improve the bending resistance of the connecting point of the base rod and the base, enhance the overall impact strength of the antenna, and prevent the base rod and the base from being broken and separated under the impact of sea waves;

[0022] 5. The component groove can be used to accommodate the components on the circuit board to ensure the flat cooperation between the circuit board and the end surface of the base, and the mounting groove can be used to accommodate the cooperation structure of the mounting nut and the reinforcing rib to ensure the flat cooperation between the end surface of the base and the end surface of the metal base;

[0023] 6. The smooth filling body can tightly support the waterproof coating to prevent the waterproof coating from being suspended at the right angle of the joint surface between the base rod and the base, and the suspended waterproof coating without internal support will be damaged under the action of water pressure, so that the waterproof effect is lost, and the smooth filling body enhances the practicality and reliability of the waterproof coating;

[0024] 7. The gap slot formed between the base stopper and the waterproof coating outside the base can be filled with sealant to further improve the overall structural strength of the antenna and protect the gap between the waterproof coating on the bottom end surface of the base and the side wall of the base. When the waterproof coating and the base slide relative to each other due to the difference in thermal expansion coefficient between different materials, the gap slot filled with sealant can prevent water from seeping into the gap between the waterproof coating on the bottom end surface of the base and the side wall of the base, enhancing the practicality and reliability of the internal pressure type waterproof antenna;

[0025] 8. Embedding the antenna in the antenna slot engraved on the surface of the base rod can effectively ensure the smoothness of the surface of the base rod after winding the antenna, making the waterproof coating closely adhere to the surface of the base rod, preventing air bubbles from existing between the waterproof coating and the base rod, and avoiding the consequences of air gap damage under water pressure and waterproof layer failure;

[0026] 9. Multiple antenna spirals can form an omnidirectional antenna, improve the uniformity of signals in all directions, reduce signal coverage blind spots, effectively reduce the interruption of satellite communication signals caused by antenna swinging with waves, and the spiral antenna has a more compact shape structure than a straight antenna of the same length, a smaller force arm under the impact of sea waves, higher efficiency, and stronger signal.

[0027] 10. The metal base is provided with external threads for matching with waterproof interfaces of other devices, and the waterproof performance of the metal base and the equipment or platform installation can be ensured after adding an O-ring. The external thread structure is more convenient for replacing, disassembling and assembling the antenna on the equipment or platform, enhancing the practicality and reliability of the antenna as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the application;

[0029] Figure 2 is an enlarged view of the local structure of the application at point A in Figure 1

[0030] Figure 3 is a schematic diagram of the installation structure of the antenna in the application.

[0031] In the figure, the metal base 1, the base wire hole 11, the base stopper 12, the O-ring 13, the base 2, the element slot 21, the base wire hole 22, the installation slot 23, the circuit board 3, the base rod 4, the positioning blind hole 41, the antenna slot 42, the waterproof coating 5, the smooth filling body 51, the reinforcing rib 6, the mounting nut 61, the internal hexagonal bolt 7, the sealant 8, the antenna 9, and the shielding cable 91. DETAILED DESCRIPTION

[0032] As Figures 1 to 3 ​As shown, a kind of shell-free kilometer level pressure-resistant waterproof antenna, including metal base 1, base wire hole 11, base baffle 12, O-ring 13, pedestal 2, component slot 21, pedestal wire hole 22, installation slot 23, circuit board 3, base rod 4, positioning blind hole 41, antenna slot 42, waterproof coating 5, smooth filling body 51, reinforcing rib 6, mounting nut 61, inner hexagonal bolt 7, sealant 8, antenna 9, shielded cable 91, the metal base 1 top end surface is fixedly connected with the bottom end surface of pedestal 2 by multiple inner hexagonal bolts 7, the inner hexagonal bolt 7 is located on the same circular track and is uniformly arranged, the metal base 1 and the contact end surface of pedestal 2 are provided with an O-ring 13 inside the circular track where the inner hexagonal bolt 7 is located, which can prevent water from entering the installation slot from the joint surface between the metal base and the pedestal, and then entering the internal space such as component slot.

[0033] The pedestal 2 includes but is not limited to 316 stainless steel material, the pedestal 2 top is provided with component slot 21, and the bottom is provided with installation slot 23, the component slot 21 and installation slot 23 are communicated by the pedestal wire hole 22 arranged in the center of pedestal 2, the metal base 1 center corresponds the pedestal wire hole 22 and is provided with a base wire hole 11, and the bottom is provided with external thread for matching with other equipment waterproof interface, the circuit board 3 is arranged on the top of pedestal 2, and the components on the circuit board 3 are arranged in component slot 21, which can be used to accommodate the components on the circuit board 3, to ensure that the circuit board 3 is tightly matched with the end surface of pedestal 2, the circuit board 3 top is provided with base rod 4, the base rod 4 includes but is not limited to kilometer level high-pressure resistant floating body material, three positioning blind holes 41 are uniformly arranged on the circular track with the center as the axis on the bottom of base rod 4, the circuit board 3 and pedestal 2 are also respectively provided with positioning holes vertically corresponding the position of positioning blind hole 41, the reinforcing rib 6 is provided as two sections with different diameters, and the smaller diameter section is provided with external thread, the smaller diameter section of reinforcing rib 6 respectively passes through circuit board 3 and pedestal 2, and extends into installation slot 23 and is fixed by external thread and mounting nut 61, the larger diameter section of reinforcing rib 6 is over-matched and embedded in the positioning blind hole 41 on the bottom of base rod 4, and is reinforced by solidified adhesive damping, the reinforcing rib 6 includes but is not limited to ABS engineering plastic material, which can better enhance the connection strength of base rod 4 and pedestal, and enhance the overall sea wave impact resistance of antenna.

[0034] The outer wall of the base rod 4 is also uniformly engraved with four antenna grooves 42 rotating in the same direction from bottom to top, which can effectively ensure the close fit between the inner surface of the waterproof coating 5 and the surface of the base rod, the antenna 9 is provided with four edges spaced 90 degrees apart on the circuit board 3, and the four antennas 9 are respectively extended to the top of the base rod 4 along the corresponding antenna grooves 42, the bottom of the circuit board 3 is provided with a shielding cable 91, and the shielding cable 91 extends to the outside of the metal base 1 through the element groove 21, the base cable hole 22, the mounting groove 23 and the base cable hole 11.

[0035] The top end face of the base 2 and the vertically arranged base rod 4 are also provided with a smooth filling body 51, the smooth filling body 51 includes but is not limited to resin material, which makes the surface of the waterproof coating 5 more flat, and the smooth filling body can tightly support the waterproof coating, preventing the waterproof coating from being suspended at the right angle of the base rod and the base, and the suspended waterproof coating without internal support will be damaged under water pressure, making the waterproof function invalid, the smooth filling body enhances the practicability and reliability of the antenna, the base rod 4, the smooth filling body 51 and the base 2 are uniformly coated with a waterproof coating 5, the waterproof coating 5 includes but is not limited to polyurea material, which can achieve waterproof effect while using elastic material to achieve certain shock absorption effect on the overall structure when the sea waves hit, the top end face of the metal base 1 is also provided with a base baffle 12, the base baffle 12 is provided with a predetermined height, and a predetermined gap is left between the base baffle 12 and the waterproof coating 5 on the outer side of the base 2, and the predetermined gap is filled with sealant 8, the sealant 8 includes but is not limited to resin adhesive material, which can further improve the overall structural strength of the antenna, and can also protect the waterproof coating and the interlayer gap of the base side wall. When the waterproof coating and the base slide relative to each other due to different thermal expansion coefficients between different materials, the gap filled with sealant can prevent water from seeping between the waterproof base bottom side wall and the coating, the device has low production cost, no hard shell, ensures the quality of the antenna signal, and achieves better pressure resistance through internal pressure bearing, which can effectively adapt to the underwater environment of kilometers, greatly improving the performance and practicability of the antenna.

[0036] The device is installed, first, the reinforcing rib 6 over fit in the positioning blind hole 41 on the base rod 4, the circuit board 3 is tightly installed at the bottom of the base rod 4, the antenna 9 on the circuit board 3 is contained in the antenna slot 42, the reinforcing rib 6 is respectively through the circuit board 3 and the base 2 and reaches the installation slot 23, while the element on the circuit board 3 is contained in the element slot 21, the circuit board 3 is tightly installed at the top of the base 2, while the shielding cable 91 at the bottom of the circuit board 3 is respectively extended to the outside of the base 2 through the element slot 21, the base line hole 22 and the installation slot 23, the reinforcing rib 6 is fixed with the installation nut 61, the base rod 4, the circuit board 3 and the base 2 are connected in series, a circle of prefabricated smooth filling body 51 is placed along the chamfer direction at the angle between the base 2 and the base rod 4, and then the polyurea material is uniformly coated on the outside of the base rod 4, the smooth filling body 51 and the base 2 to form a waterproof coating 5.

[0037] The metal base 1 with the top preset O-shaped ring 13 is fixed on the bottom of the base 2 through the internal hexagonal bolt 7, while the shielding cable 91 is extended to the outside of the metal base 1 through the base line hole 11, and the sealant 8 is poured in the gap between the base baffle 12 at the edge of the metal base 1 and the waterproof coating 5 on the outside of the base 2.

[0038] For those skilled in the art, according to the teachings of the present application, the changes, modifications, replacements and variations made to the embodiments without departing from the principles and spirits of the present application still fall within the protection scope of the present application.

Claims

1. A kilometer-level pressure-resistant waterproof antenna without a shell, characterized in that: The utility model provides a kind of waterproof antenna, including metal base, pedestal, circuit board, antenna, the top surface of the metal base is fixedly connected with the bottom surface of pedestal, the top of the pedestal is equipped with element slot, the element slot is communicated to the bottom of pedestal by the pedestal line hole arranged in the inside of pedestal, the center of the metal base is equipped with pedestal line hole corresponding to pedestal line hole, the circuit board is set on the top of pedestal corresponding element slot, the top of the circuit board is equipped with base rod, the base rod includes million-meter level high-pressure resistant floating body material, the base rod, circuit board and pedestal are fixedly connected, the outer wall of the base rod is further equipped with antenna slot, the antenna is connected on the circuit board and extends to the top of base rod along corresponding antenna slot;The antenna slot is evenly provided with four and rotates in the same direction from bottom to top, the antenna is provided with four and is respectively connected on the four direction edges of circuit board with 90 degrees interval, and the four antennas extend to the top of base rod along the corresponding antenna slot and rotate in the same direction respectively;The bottom of the circuit board is equipped with shield cable, and the shield cable extends to the outside of metal base by element slot, pedestal line hole and pedestal line hole respectively;The outer side of the base rod and pedestal is equipped with waterproof coating.

2. A waterproof antenna of kilometer range according to claim 1, characterized in that, The top surface of the metal base is fixedly connected with the bottom surface of the pedestal by a plurality of internal hexagonal bolts, and the internal hexagonal bolts are located on the same circular track and are evenly arranged.

3. A waterproof antenna of kilometer range according to claim 2, characterized in that, O-rings are arranged on the inside of the circular track where the internal hexagonal bolts are located on the contact end surface of the metal base and the pedestal.

4. The waterproof antenna of claim 1, wherein the waterproof antenna is a kilometer-level pressure-resistant waterproof antenna without a shell. The bottom of the pedestal is equipped with a mounting groove, the pedestal includes 316 stainless steel material, the element slot and the mounting groove are communicated through the pedestal line hole arranged in the center of the pedestal, the shield cable extends to the outside of the metal base by the element slot, the pedestal line hole, the mounting groove and the pedestal line hole respectively, and the bottom of the metal base is equipped with external threads.

5. A waterproof antenna of kilometer range according to claim 4, characterized in that, The bottom of the base rod is equipped with a positioning blind hole, the base rod includes million-meter level high-pressure resistant floating body material, the circuit board and the pedestal are further respectively equipped with positioning holes vertically corresponding to the position of the positioning blind hole, the positioning blind hole and the positioning hole are provided with reinforcing ribs, the reinforcing ribs include ABS engineering plastic material, the positioning hole is provided with internal threads, the reinforcing rib is provided with two segments with different diameters, and the segment with smaller diameter is provided with external threads, the segment with smaller diameter of the reinforcing rib passes through the circuit board and the pedestal respectively, and extends into the mounting groove and is fixed by mounting nut, and the segment with larger diameter of the reinforcing rib is arranged in the positioning blind hole at the bottom of the base rod.

6. A waterproof antenna of kilometer range without a shell according to claim 5, characterized in that, The positioning blind hole is provided with three and is evenly arranged on the circular track with the center as the axis at the bottom of the base rod.

7. A waterproof antenna of kilometer range according to claim 5, characterized in that, The segment with larger diameter of the reinforcing rib is fitted in the positioning blind hole at the bottom of the base rod, and the damping is strengthened by solidifying adhesive.

8. A waterproof antenna of kilometer range according to claim 1, characterized in that, The top end surface of the pedestal and the base rod arranged vertically also have a smooth filler, the smooth filler includes resin material, the waterproof coating is evenly coated on the outer side of the base rod, the smooth filler and the pedestal, and the waterproof coating includes polyurea material.

9. A waterproof antenna of kilometer range according to claim 1, characterized in that, The outer edge of the top end face of the metal base is further provided with a base baffle with a predetermined height, a predetermined gap is left between the base baffle and the waterproof coating outside the base, and sealant is filled in the gap, wherein the sealant comprises a resin adhesive material.

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