Antenna and combined antenna structure thereof

Abstract

The present invention discloses an antenna and a combined antenna structure thereof, relating to the field of automotive wireless communication technology, comprising a circuit board, a fin cover fixedly provided on the top of the arc-shaped box, an intermediate plate provided in the middle of the arc-shaped box, a circuit board fixedly provided on one end of the intermediate plate by means of screws, a first radiating arm and a second radiating arm provided on a side of the intermediate plate away from the circuit board, the first radiating arm and the second radiating arm forming a cross-dipole antenna structure, the cross-type antenna driving component in the present invention can realize the switching of the two radiating arms between a cross state and a straight-line state, and has a storage and deployment function linked to the antenna shell, in a non-working state, the component can deform the two radiating arms into a collinear straight-line shape by rotating, folding or sliding, and tightly store them inside the fin-shaped antenna shell, which not only realizes effective covering and protection of the radiating arms, but also greatly saves the internal space of the shell.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile wireless communication, and in particular to an antenna and a combined antenna structure thereof. Background Art

[0002] The shark fin antenna, a rooftop antenna, is an integrated vehicle antenna, named for its resemblance to a fish fin. It is typically installed at the rear of the vehicle's roof. It integrates multiple antenna elements, including FM / AM radio, GPS navigation, 4G / 5G communications, Bluetooth, satellite positioning, and V2X vehicle-to-everything (V2X) communications. This integrated design improves signal reception, reduces wind resistance, and enhances the vehicle's overall appearance.

[0003] In the existing technology, the antenna structure on the roof of a car is usually fixedly installed, that is, the antenna unit is encapsulated as a whole inside a fin-shaped antenna shell and transmits and receives signals in a fixed posture. Although this type of structure has the advantages of easy installation, coordinated appearance, and good wind resistance, it has certain defects in actual use. When the vehicle travels to an area with weak signal coverage (such as mountainous areas, tunnels, remote suburbs, and areas blocked by high-rise buildings), the radiation pattern and installation height of the fixed antenna structure cannot be adjusted, resulting in insufficient signal gain in certain directions, making it difficult to effectively match the wireless signal propagation path. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the antenna structure on the roof of a car in the prior art is usually fixedly installed, that is, the antenna unit is entirely encapsulated inside a fin-shaped antenna shell and transmits and receives signals in a fixed posture. Although this type of structure has the advantages of easy installation, harmonious appearance, and good wind resistance, it has certain defects during actual use. When the vehicle travels to an area with weak signal coverage (such as mountainous areas, tunnels, remote suburbs, and areas blocked by high-rise buildings), the radiation pattern and installation height of the fixed antenna structure cannot be adjusted, resulting in insufficient signal gain in certain directions of the antenna, making it difficult to effectively match the wireless signal propagation path. Therefore, an antenna and a combined antenna structure are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An antenna and a combined antenna structure thereof, comprising a circuit board, a fin cover, an arc-shaped box, and a bottom cover. The fin cover is fixedly mounted on the top of the arc-shaped box. An intermediate plate is disposed in the middle of the arc-shaped box. A circuit board is fixedly mounted on one end of the intermediate plate using screws. A first radiating arm and a second radiating arm are disposed on a side of the intermediate plate away from the circuit board. The first radiating arm and the second radiating arm form a cross-dipole antenna structure.

[0007] The middle plate is provided with a rectangular groove on one side of the circuit board, a guide seat is fixedly provided in an inclined manner inside the rectangular groove, and a cross-type antenna driving component is provided on the side of the guide seat, which drives the first radiating arm and the second radiating arm to move in and out of the fin cover and switch between a straight line shape and a cross shape;

[0008] The guide seat is provided with a follow-up sealing component below the cross-type antenna driving component. The follow-up sealing component always keeps the fin cover in a sealed state when the cross-type antenna driving component enters and exits the fin cover to prevent water from entering the fin cover.

[0009] Optionally, the expanded antenna driving assembly includes a driving motor, an auxiliary column, a driving screw, and a driving cylinder. The driving motor is fixedly arranged at the bottom of the fixed folding seat, a T-block is fixedly arranged on the side of the fixed folding seat, and a T-slot is inclined on one side of the guide seat, and the T-block is movably inserted into the T-slot.

[0010] Optionally, a driving screw is fixedly provided at the output end of the driving motor, and the other end of the driving screw is threaded into the interior of the extension tube. An auxiliary column is movably inserted into the extension tube on the opposite side of the driving screw, and the other end of the auxiliary column is fixedly provided on the side of the fixed folding seat. The other end of the extension tube is fixedly provided in the middle position of the side of the second radiating arm, and an avoidance hole is opened at the center position of the side of the second radiating arm, and an extension rod is movably inserted into the avoidance hole.

[0011] Optionally, a first radiation arm is fixedly provided at one end of the extension rod, and the other end of the extension rod is movably inserted into the driving cylinder. The driving cylinder is fixedly provided on one side of the fixed folding seat, and a vertical groove and an inclined groove are sequentially opened on the outer wall of the driving cylinder.

[0012] Optionally, a docking groove is formed on the top of the fin cover, the first radiating arm and the second radiating arm extend into the docking groove, and the first radiating arm and the second radiating arm have the same cross-sectional dimensions when viewed from above.

[0013] Optionally, the follower sealing assembly includes a sealing plate, an extension edge, a docking column, and a supporting spring. The docking column is movably inserted into the side of the edge block, and the other end of the docking column is fixedly set at the bottom of the sealing plate. The edge position of the sealing plate is fixedly provided with an extension edge, and a sealing ring is fixedly provided on the top of the extension edge. A sealing ring groove is opened at the top of the inner cavity of the fin cover.

[0014] Optionally, a supporting ring is fixedly provided on the top of the outer wall of the docking column, and a supporting spring is sleeved under the supporting ring of the docking column. The bottom of the supporting spring is supported on the top of the edge block, and the edge block is fixed on the outer wall of the extension tube.

[0015] Optionally, a guide groove is provided on the side of the guide seat, and an adjustment bolt is movably inserted into the side of the guide groove of the guide seat, and the other end of the adjustment bolt is threaded into the side of the fixed folding seat.

[0016] Optionally, one end of the vertical slot is connected to one end of the inclined slot, a follower column is screwed into the bottom of the outer wall of the extension rod, and the other end of the follower column extends into the vertical slot or the inclined slot.

[0017] Optionally, the top four corners of the arc box are arrayed with threaded barrels, the bottom of the threaded barrel is fixedly provided with a docking screw barrel, the bottom four corners of the bottom cover are provided with docking holes, and the docking screw barrels are movably inserted into the docking holes.

[0018] Optionally, a U-shaped groove is provided at the bottom edge of the bottom cover, a metal cylinder is fixedly provided at the bottom of the circuit board, and the metal cylinder is movably sleeved with a docking ring after passing through the U-shaped groove, and a locking nut is screwed into the outer wall of the metal cylinder.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The main structure of the present invention includes a circuit board, a first radiating arm, and a second radiating arm. The first radiating arm and the second radiating arm constitute a cross-dipole antenna structure, and a cross-type antenna driving component is provided in the inner cavity of the fin cover. It is an antenna structure deployment mechanism with deformable capability. It realizes the switching between the cross state and the straight state of the two radiating arms through mechanical linkage or driving structure, and has the storage and deployment function linked with the shell. In the non-working state, the component can fold or rotate the two radiating arms to the straight state and completely store them inside the antenna shell, thereby significantly reducing the wind resistance of the vehicle during driving. It can prevent the interference of outdoor antennas on the integrated design of the vehicle's exterior, and prevent the corrosion or pollution of the antenna by mud, rain, ice and snow, thereby improving the reliability and service life of the system. In scenarios where signal enhancement such as communication or navigation is required, this component can drive the two radiating arms that were originally stored in a straight line to extend out from the shell synchronously, and unfold them in a linked manner to a preset cross state (such as an "X" shape), thereby restoring the ideal polarization angle and spatial radiation characteristics of the antenna, achieving wider frequency band coverage, stronger signal gain and higher polarization purity, and effectively improving the robustness and signal quality of the communication system in complex environments.

[0021] 2. The cross-type antenna drive component in the present invention is a deformable antenna structure deployment mechanism. It realizes the switching of the two radiating arms between the cross state and the straight state through mechanical linkage or driving structure, and has the storage and deployment function linked with the antenna shell. In the non-working state, the component can deform the two radiating arms into a collinear straight shape by rotation, folding or sliding, and store them tightly inside the fin-shaped antenna shell. It not only achieves effective covering and protection of the radiating arms, but also greatly saves the internal space of the shell, making the entire antenna structure more compact and thin, which is conducive to the integration of multiple communication modules in a limited volume and avoiding electromagnetic interference between different antenna units.

[0022] 3. The present invention provides a docking groove on the top of the fin cover, which serves as a common channel for the first radiating arm and the second radiating arm, and is used to realize the orderly extension and retraction operations of the two radiating arms, and a follower sealing assembly is provided at the bottom of the second radiating arm. The cross-type antenna driving assembly always closes the docking groove during the process of driving the first radiating arm and the second radiating arm to extend and unfold from the fin cover. The follower sealing assembly can effectively prevent dust, moisture, sand and other impurities in the external environment from entering the interior of the fin cover through the docking groove, protect the internal electrical components and mechanical transmission structure from pollution and corrosion, and improve the reliability and durability of the antenna system; secondly, the dynamic sealing function of the sealing assembly ensures the sealing of the antenna during extension and retraction, avoids the increase of aerodynamic noise and wind resistance, and helps to reduce wind noise and energy consumption when the vehicle is driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 for Figure 1 Another perspective structural diagram.

[0025] Figure 3 for Figure 1 Schematic diagram of the explosion structure.

[0026] Figure 4 for Figure 2 Schematic diagram of the half-section structure.

[0027] Figure 5 Schematic diagram of the structure of the middle plate and its connecting parts.

[0028] Figure 6 for Figure 3 Schematic diagram of the structure with the middle plate and its connecting parts removed.

[0029] Figure 7 Schematic diagram of the structure of the first radiation arm and its connecting member.

[0030] Figure 8The following is a schematic diagram of the structure of the sealing component and its connecting parts.

[0031] Figure 9 It is a structural schematic diagram of the first radiation arm and the second radiation arm being unfolded.

[0032] Figure 10 for Figure 8 Another perspective structural diagram.

[0033] Figure 11 This is a structural diagram of the following sealing component and the second radiation arm.

[0034] Figure: 1, fin cover; 2, curved box; 3, bottom cover; 4, docking ring; 5, locking nut; 6, metal cylinder; 7, U-shaped groove; 8, docking groove; 9, docking hole; 10, docking screw barrel; 11, threaded barrel; 12, middle plate; 121, rectangular groove; 13, circuit board; 14, guide seat; 141, T-shaped groove; 142, guide groove; 15, sealing ring groove; 16, first radiating arm; 17, extension rod; 171, follower Column; 18. Fixed folding seat; 181. T-block; 19. Driving cylinder; 191. Inclined slot; 192. Vertical slot; 20. Second radiating arm; 201. Avoidance hole; 202. Extension cylinder; 21. Driving screw; 22. Auxiliary column; 23. Adjusting bolt; 24. Sealing plate; 25. Extended edge; 26. Sealing ring; 27. Docking column; 271. Supporting ring; 28. Supporting spring; 29. ​​Edge block; 30. Driving motor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0037] Reference Figures 1-11An antenna and its combined antenna structure include a circuit board 13, a fin cover 1, an arc box 2 and a bottom cover 3. The fin cover 1 is fixed on the top of the arc box 2, and an intermediate plate 12 is provided in the middle of the arc box 2. The circuit board 13 is fixed to one end of the intermediate plate 12 with screws. A first radiating arm 16 and a second radiating arm 20 are provided on the side of the intermediate plate 12 away from the circuit board 13. The first radiating arm 16 and the second radiating arm 20 constitute a cross dipole antenna structure.

[0038] There are threaded barrels 11 in the four corners of the top of the arc box 2, and a docking screw barrel 10 is fixedly set at the bottom of the threaded barrel 11. Docking holes 9 are opened at the four corners of the bottom of the bottom cover 3, and the docking screw barrel 10 is movably inserted into the docking hole 9. A U-shaped groove 7 is opened at the bottom edge of the bottom cover 3. A metal barrel 6 is fixed at the bottom of the circuit board 13. After the metal barrel 6 passes through the U-shaped groove 7, it is movably sleeved with a docking gasket 4. A locking nut 5 is screwed into the outer wall of the metal barrel 6, and the top of the threaded barrel 11 is exposed from the top of the arc box 2. The docking screw barrel 10 and the docking hole 9 are used for quick docking and installation between the bottom cover 3 and the arc box 2. The width of the docking gasket 4 is greater than the width of the U-shaped groove 7. The locking nut 5 and the docking gasket 4 are set for quick fixed installation between the bottom cover 3 and the arc box 2. The metal barrel 6 facilitates the circuit of the circuit board 13 to extend out from the entire shell and thus be connected to the car control circuit. In addition, the structure of the circuit board 13 is a commonly used structure of the car fin antenna in the prior art, so its detailed structure is not disclosed in this application document.

[0039] The middle plate 12 is provided with a rectangular groove 121 on one side of the circuit board 13. A guide seat 14 is fixedly provided inside the rectangular groove 121 at an angle. A cross-type antenna driving component is provided on the side of the guide seat 14. The cross-type antenna driving component drives the first radiating arm 16 and the second radiating arm 20 to move in and out of the fin cover 1 and switch between a straight line type and a cross type.

[0040] The expanded antenna drive assembly includes a drive motor 30, an auxiliary column 22, a drive screw 21, and a drive cylinder 19. The drive motor 30 is fixedly arranged at the bottom of the fixed folding seat 18, and a T-block 181 is fixedly arranged on the side of the fixed folding seat 18. A T-slot 141 is inclined on one side of the guide seat 14, and the T-block 181 is movably inserted into the inside of the T-slot 141. Therefore, the fixed folding seat 18 can move laterally along the axis direction of the output end of the drive motor 30 under the guidance of the T-block 181 and the T-slot 141.

[0041] A driving screw 21 is fixedly provided at the output end of the driving motor 30, and the other end of the driving screw 21 is threaded into the interior of the extension tube 202. An auxiliary column 22 is movably inserted into the extension tube 202 on the opposite side of the driving screw 21. The other end of the auxiliary column 22 is fixedly provided on the side of the fixed folding seat 18, and the other end of the extension tube 202 is fixedly provided at the middle position of the side of the second radiating arm 20. A avoidance hole 201 is provided at the center position of the side of the second radiating arm 20, and an extension rod 17 is movably inserted into the avoidance hole 201. The extension tube 202 is provided with a hole with a smooth inner wall at the insertion position of the auxiliary column 22, and the extension tube 202 is provided with a hole with an internal thread at the screw-in position of the driving screw 21. The auxiliary column 22 limits the extension tube 202 to move only along the axis direction of the output end of the driving motor 30.

[0042] A guide groove 142 is provided on the side of the guide seat 14, and an adjusting bolt 23 is movably inserted into the side of the guide groove 142 of the guide seat 14. The other end of the adjusting bolt 23 is threaded into the side of the fixed folding seat 18. When the worker starts the driving motor 30, the first radiating arm 16 is retracted to the extreme position by driving the screw 21, and observes whether the first radiating arm 16 is aligned with the top wall of the fin cover 1. When the first radiating arm 16 is not aligned with the top wall of the fin cover 1, the worker loosens the adjusting bolt 23 through the rectangular groove 121 with a tool in his hand, moves the fixed folding seat 18 along the guide seat 14 until the first radiating arm 16 is not aligned with the top wall of the fin cover 1, and then tightens the adjusting bolt 23 again to avoid installation errors of the fixed folding seat 18. When the driving motor 30 is started, the first radiating arm 16 is retracted to the extreme position by driving the screw 21, so as to avoid the problem that the first radiating arm 16 cannot be aligned with the top wall of the fin cover 1.

[0043] A first radiating arm 16 is fixedly provided at one end of the extension rod 17, and the other end of the extension rod 17 is movably inserted into the interior of the driving cylinder 19, which is fixed on one side of the fixed folding seat 18. The outer wall of the driving cylinder 19 is sequentially provided with a vertical groove 192 and an inclined groove 191, one end of the vertical groove 192 is connected with one end of the inclined groove 191, and a follower column 171 is screwed into the bottom of the outer wall of the extension rod 17, and the other end of the follower column 171 extends into the vertical groove 192 or the inclined groove 191. The width of the vertical groove 192 and the inclined groove 191 is the same as the width of the follower column 171. A docking groove 8 is provided at the top of the fin cover 1, and the first radiating arm 16 and the second radiating arm 20 extend into the docking groove 8. The first radiating arm 16 and the second radiating arm 20 have the same cross-sectional dimensions when viewed from above. The docking groove 8 serves as a common channel for the first radiating arm 16 and the second radiating arm 20, and is used to realize orderly extension and retraction operations of the two radiating arms.

[0044] The guide seat 14 is provided with a follower sealing assembly below the cross-type antenna driving assembly. The follower sealing assembly always keeps the fin cover 1 in a sealed state when the cross-type antenna driving assembly enters and exits the fin cover 1 to prevent water from entering the fin cover 1. The follower sealing assembly includes a sealing plate 24, an extension edge 25, a docking column 27, and a holding spring 28. The docking column 27 is movably inserted into the side of the edge block 29, and the other end of the docking column 27 is fixedly set at the bottom of the sealing plate 24. The edge position of the sealing plate 24 is fixedly provided with an extension edge 25, and a sealing ring 26 is fixedly provided on the top of the extension edge 25. A sealing ring groove 15 is provided at the top of the inner cavity of the fin cover 1, and the cross-sectional size of the sealing ring 26 is the same as the cross-sectional size of the sealing ring groove 15. A holding ring 271 is fixedly provided on the top of the outer wall of the docking column 27, and a holding spring 28 is sleeved on the docking column 27 below the holding ring 271. The bottom of the holding spring 28 is pressed against the top of the edge block 29, and the edge block 29 is fixedly provided on the outer wall of the extension tube 202.

[0045] It should be added that the thickness of the sealing plate 24 is the same as the thickness of the docking groove 8. When the follower column 171 moves from the bottom of the vertical groove 192 to the top of the vertical groove 192, the first radiating arm 16 and the second radiating arm 20 are completely moved out of the docking groove 8. At this time, the sealing ring 26 of the extended edge 25 enters the sealing ring groove 15, and under the action of the supporting spring 28, the extended edge 25 is always tightly pressed against the bottom of the inner cavity of the fin cover 1, closing the docking groove 8, and the sealing plate 24 enters the interior of the docking groove 8. The sealing plate 24 is flush with the top of the fin cover 1 to prevent rainwater from accumulating inside the docking groove 8.

[0046] The specific implementation steps and principles of the present invention are as follows:

[0047] During the entire antenna installation and debugging process, the drive motor 30 is started, and the first radiating arm 16 is retracted to the extreme position by driving the screw 21, and the first radiating arm 16 is observed to be aligned with the top wall of the fin cover 1. When the first radiating arm 16 is not aligned with the top wall of the fin cover 1, the worker uses a handheld tool to loosen the adjustment bolt 23 through the rectangular groove 121, and moves the fixed folding seat 18 along the guide seat 14 until the first radiating arm 16 is aligned with the top wall of the fin cover 1, and then tightens the adjustment bolt 23 again. Finally, the docking hole 9 of the bottom cover 3 is inserted into the docking screw barrel 10, and the entire structure is placed on the top of the car. The screw is inserted through the top of the threaded barrel 11, and the screw passes through the docking screw barrel 10 in turn, and is finally screwed into the reserved hole on the top of the car body.

[0048] In the initial state, refer to Figure 2 , Figure 10The first radiating arm 16 and the second radiating arm 20 are in a "one-line" shape and the first radiating arm 16 and the second radiating arm 20 are combined and stored in the docking groove 8. At this time, the follower column 171 is at the bottom of the vertical groove 192, the holding spring 28 is in its original length state, the top of the sealing plate 24 is in contact with the bottom of the second radiating arm 20, and the extended edge 25 is not in contact with the inner cavity shell of the fin cover 1.

[0049] When the car encounters a poor signal, the drive motor 30 starts, driving the drive screw 21 to reversely rotate the second radiating arm 20 at the top of the extension tube 202, so that it moves out of the docking groove 8. At the same time, the second radiating arm 20 lifts the first radiating arm 16 and extends out of the docking groove 8. When the follower column 171 moves from the bottom of the vertical groove 192 to the top of the vertical groove 192, the first radiating arm 16 and the second radiating arm 20 are completely moved out of the docking groove 8. At this time, the sealing ring 26 of the extension edge 25 enters the sealing ring groove 15 and is at the top. Under the action of the holding spring 28, the extension edge 25 is always tightly pressed against the bottom of the inner cavity of the fin cover 1, closing the docking groove 8, and the sealing plate 24 enters the docking groove 8. The sealing plate 24 is flush with the top of the fin cover 1. At this time, the follower column 171 starts to move from the vertical groove 192 to the inside of the inclined groove 191, and the follower column 171 drives the extension rod 17 to rotate a certain angle. At this time, the antenna structure composed of the second radiating arm 20 and the first radiating arm 16 at the top of the extension rod 17 is switched from the original "straight-line" antenna to an "X"-shaped antenna.

[0050] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An antenna and a combined antenna structure thereof, comprising a circuit board, a fin cover, an arc-shaped box and a bottom cover, characterized in that: A fin cover is fixedly provided on the top of the arc-shaped box, an intermediate plate is provided in the middle of the arc-shaped box, a circuit board is fixedly provided on one end of the intermediate plate by screws, and a first radiating arm and a second radiating arm are provided on a side of the intermediate plate away from the circuit board, the first radiating arm and the second radiating arm forming a cross-dipole antenna structure; The middle plate is provided with a rectangular groove on one side of the circuit board, a guide seat is fixedly provided in an inclined manner inside the rectangular groove, and a cross-type antenna driving component is provided on the side of the guide seat, which drives the first radiating arm and the second radiating arm to move in and out of the fin cover and switch between a straight line shape and a cross shape; The cross-type antenna driving assembly includes a driving motor, an auxiliary column, a driving screw, and a driving cylinder, wherein the driving motor is fixedly arranged at the bottom of the fixed folding seat, a T-shaped block is fixedly arranged on the side of the fixed folding seat, a T-shaped slot is obliquely opened on one side of the guide seat, and the T-shaped block is movably inserted into the T-shaped slot, a driving screw is fixedly arranged on the output end of the driving motor, and the other end of the driving screw is screwed into the interior of the extension cylinder, and the extension cylinder is movably inserted with an auxiliary column on the side opposite to the driving screw, the other end of the auxiliary column is fixedly arranged on the side of the fixed folding seat, and the other end of the extension cylinder is fixedly arranged in the middle position of the side of the second radiation arm; A avoidance hole is provided at the center position of the side surface of the second radiation arm, an extension rod is movably inserted into the avoidance hole, one end of the extension rod is fixedly provided with the first radiation arm, the other end of the extension rod is movably inserted into the interior of the driving cylinder, the driving cylinder is fixedly provided on one side of the fixed folding seat, a vertical groove and an inclined groove are sequentially provided on the outer wall of the driving cylinder, one end of the vertical groove is connected with one end of the inclined groove, a follower column is screwed into the bottom of the outer wall of the extension rod, and the other end of the follower column extends into the vertical groove or the inclined groove; The guide seat is provided with a follow-up sealing component below the cross-type antenna driving component. The follow-up sealing component always keeps the fin cover in a sealed state when the cross-type antenna driving component enters and exits the fin cover to prevent water from entering the fin cover.

2. The antenna and combined antenna structure thereof according to claim 1, characterized in that: A docking groove is formed on the top of the fin cover, and the first radiating arm and the second radiating arm extend into the docking groove. The first radiating arm and the second radiating arm have the same cross-sectional dimensions when viewed from above.

3. The antenna and combined antenna structure thereof according to claim 1, characterized in that: The follower sealing assembly includes a sealing plate, an extension edge, a docking column, and a supporting spring. The docking column is movably inserted into the side of the edge block, and the other end of the docking column is fixedly set at the bottom of the sealing plate. The edge position of the sealing plate is fixedly provided with an extension edge, and a sealing ring is fixedly provided on the top of the extension edge. A sealing ring groove is opened at the top of the inner cavity of the fin cover.

4. The antenna and combined antenna structure thereof according to claim 3, characterized in that: A supporting ring is fixedly provided on the top of the outer wall of the docking column, and a supporting spring is sleeved below the supporting ring. The bottom of the supporting spring is supported on the top of the edge block, and the edge block is fixed on the outer wall of the extension tube.

5. The antenna and combined antenna structure thereof according to claim 2, characterized in that: A guide groove is provided on the side of the guide seat, and an adjusting bolt is movably inserted into the side of the guide groove of the guide seat, and the other end of the adjusting bolt is screwed into the side of the fixed folding seat.

6. The antenna and combined antenna structure thereof according to claim 1, characterized in that: The top four corners of the arc box are arrayed with threaded barrels, the bottom of the threaded barrel is fixedly provided with a docking screw barrel, and the bottom four corners of the bottom cover are provided with docking holes, and the docking screw barrels are movably inserted into the docking holes.

7. The antenna and combined antenna structure thereof according to claim 1, characterized in that: A U-shaped groove is provided at the bottom edge of the bottom cover, a metal cylinder is fixedly provided at the bottom of the circuit board, and the metal cylinder is movably sleeved with a docking ring after passing through the U-shaped groove, and a locking nut is screwed into the outer wall of the metal cylinder.

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