A radio antenna isolation device

Abstract

This utility model belongs to the field of radio antenna anti-interference equipment, and in particular, a radio antenna isolation device. It includes a fixed bracket, a buffer base fixedly mounted on the top of the fixed bracket, a connecting base on the top of the buffer base, and a ball-shaped base fixedly mounted on the top of the connecting base. The ball-shaped base has a spherical groove on its top, and the ball-shaped base is fixedly mounted on the top of the connecting base. This utility model can form a "ring-like locking" through four symmetrically distributed clamping forces, thereby preventing ball head displacement and locking the ball head end of the hollow ball head rod. This allows for precise adjustment of the antenna's polarization direction. Furthermore, through the inclusion of polyurethane buffer rings and other structures, it coordinates to ensure the antenna remains stable during complex vehicle movements, reducing signal attenuation or structural fatigue caused by impacts and preventing weakened isolation effects due to vibration.

Description

Technical Field

[0001] This utility model relates to the technical field of radio antenna anti-interference equipment, and in particular to a radio antenna isolation device. Background Technology

[0002] A radio antenna isolation bracket is a mechanical structure used in multi-antenna deployment scenarios. By optimizing spatial layout and electromagnetic compatibility design, it reduces electromagnetic coupling between antennas. Its core is an adjustable bracket body, including telescopic arms, rotating joints, and shielding components. It can achieve physical isolation by adjusting the antenna spacing and polarization direction (such as horizontal / vertical orthogonal). Combined with metal shielding plates or absorbing materials, it blocks electromagnetic radiation paths, improving isolation to over 30dB, ensuring that each radio system can operate independently and stably in dense environments such as vehicle-mounted and ship-mounted systems.

[0003] However, most existing isolation devices can only tilt the antenna in a fixed direction during use, and cannot precisely adjust the polarization direction, resulting in a decrease in isolation effect. Furthermore, most existing devices are installed on vehicles, and the vibration of the vehicle will change the relative position and angle of the antenna, which will disrupt the original spatial isolation layout, leading to increased electromagnetic coupling and decreased isolation. At the same time, vibration can easily cause antenna bracket deformation and loosening of contacts, affecting impedance matching and radiation characteristics, further aggravating signal crosstalk. In particular, high-frequency vibration can easily cause isolation fluctuations to exceed 10dB, interfering with the stability of radio communication. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A radio antenna isolation device includes a fixed bracket, a buffer base fixedly installed on the top of the fixed bracket, a connecting base on the top of the buffer base, and a ball head base fixedly installed on the top of the connecting base; a spherical groove is formed on the top of the ball head base, and a hollow ball head rod is provided on the top of the ball head base, with the ball head end of the hollow ball head rod slidably installed inside the spherical groove.

[0006] Specifically, the antenna body is fixedly installed at the top of the hollow ball head rod, which facilitates the adjustment of the polarization direction of the antenna body through the hollow ball head rod.

[0007] Specifically, the top of each of the four support legs of the fixed bracket is provided with a fixing hole, which makes it easy to fix the equipment on the vehicle.

[0008] Specifically, an annular damping pad is fixedly installed on the inner side of the buffer base, and the inner side of the annular damping pad is fixedly connected to the outer side of the connecting base to prevent rigid collision between the buffer base and the connecting base.

[0009] Specifically, a polyurethane buffer ring is fixedly installed on the bottom inner wall of the buffer base, the top of the polyurethane buffer ring is fixedly connected to the bottom of the connecting base, and multiple polytetrafluoroethylene guide sleeves are fixedly inserted through the top of the polyurethane buffer ring.

[0010] Specifically, multiple high-strength alloy springs are fixedly installed on the bottom inner wall of the buffer base. The multiple high-strength alloy springs are located inside the corresponding polytetrafluoroethylene guide sleeves, and the extension and retraction direction of the corresponding high-strength alloy springs can be restricted by the multiple polytetrafluoroethylene guide sleeves.

[0011] Specifically, a circular damping pad is fixedly installed on the top of each of the multiple PTFE guide sleeves, and the other end of each of the multiple high-strength alloy springs is fixedly connected to the bottom of the corresponding circular damping pad. The multiple circular damping pads can absorb the last remaining low-frequency vibrations through their own deformation.

[0012] Specifically, the outer thread of the ball head base is fitted with a threaded ring, which facilitates axial movement of the threaded ring along the outer thread of the ball head base.

[0013] Specifically, the outer side of the ball head base is provided with four guide ports, which are connected to the same spherical groove. A linkage slider is slidably installed on the inner side of each of the four guide ports. A locking brake pad is fixedly installed on one side of each of the four linkage sliders. The four locking brake pads abut against the ball head end of the same hollow ball head rod, which facilitates locking the ball head end of the hollow ball head rod and preventing it from deviating.

[0014] Specifically, each of the four linkage sliders has a linkage groove on its inclined surface, and four extrusion sliders are slidably mounted on the top of the threaded ring. Each of the four extrusion sliders has a linkage protrusion on its inclined surface, and the four linkage protrusions are respectively adapted to the corresponding linkage grooves, so as to facilitate the movement of the linkage sliders by the extrusion sliders.

[0015] Compared with existing technologies, the advantages of this invention are as follows: The hollow ball joint and four locking brake pads create a "ring-like locking" effect through symmetrically distributed clamping forces at four points, preventing ball joint displacement and locking the ball joint end of the hollow ball joint. This allows for precise adjustment of the antenna's polarization direction. Furthermore, the polyurethane buffer ring and other structures work in concert to ensure the antenna remains stable during complex vehicle movements, reducing signal attenuation or structural fatigue caused by impacts and preventing weakened isolation effects due to vibrations. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a radio antenna isolation device proposed in this utility model;

[0017] Figure 2This is a three-dimensional structural disassembly diagram of a radio antenna isolation device proposed in this utility model;

[0018] Figure 3 This is a three-dimensional structural disassembly diagram of the buffer base and connecting base of a radio antenna isolation device proposed in this utility model;

[0019] Figure 4 This is a three-dimensional cross-sectional view of the polyurethane buffer ring, polytetrafluoroethylene guide sleeve, high-strength alloy spring and circular damping pad of a radio antenna isolation device proposed in this utility model.

[0020] Figure 5 This is a three-dimensional structural disassembly diagram of the hollow ball head rod and ball head base of a radio antenna isolation device proposed in this utility model;

[0021] Figure 6 This is a three-dimensional structural breakdown diagram of the locking brake pad, linkage slider, and compression slider of a radio antenna isolation device proposed in this utility model.

[0022] In the diagram: 1. Fixed bracket; 2. Buffer base; 3. Connecting base; 4. Annular damping pad; 5. Polyurethane buffer ring; 6. PTFE guide sleeve; 7. High-strength alloy spring; 8. Circular damping pad; 9. Ball head base; 10. Threaded ring; 11. Hollow ball head rod; 12. Locking brake pad; 13. Linkage slider; 14. Extrusion slider; 15. Antenna body. Detailed Implementation

[0023] Reference Figure 1-6 A radio antenna isolation device includes a fixed bracket 1, a buffer base 2 fixedly installed on the top of the fixed bracket 1, a connecting base 3 on the top of the buffer base 2, and a ball head base 9 fixedly installed on the top of the connecting base 3; a spherical groove is opened on the top of the ball head base 9, and a hollow ball head rod 11 is provided on the top of the ball head base 9, with the ball head end of the hollow ball head rod 11 slidably installed on the inner side of the spherical groove.

[0024] In this embodiment, the top of the hollow ball head rod 11 is fixedly mounted with the antenna body 15, which facilitates the adjustment of the polarization direction of the antenna body 15 through the hollow ball head rod 11.

[0025] In this embodiment, the top of each of the four support legs of the fixed bracket 1 is provided with a fixing hole, which makes it easy to fix the equipment on the vehicle.

[0026] In this embodiment, an annular damping pad 4 is fixedly installed on the inner side of the buffer base 2. The inner side of the annular damping pad 4 is fixedly connected to the outer side of the connecting base 3 to prevent rigid collision between the buffer base 2 and the connecting base 3.

[0027] In this embodiment, a polyurethane buffer ring 5 is fixedly installed on the bottom inner wall of the buffer base 2. The top of the polyurethane buffer ring 5 is fixedly connected to the bottom of the connecting base 3. Multiple polytetrafluoroethylene guide sleeves 6 are fixedly inserted through the top of the polyurethane buffer ring 5.

[0028] In this embodiment, multiple high-strength alloy springs 7 are fixedly installed on the bottom inner wall of the buffer base 2. The multiple high-strength alloy springs 7 are respectively located inside the corresponding polytetrafluoroethylene guide sleeves 6. The extension and retraction direction of the corresponding high-strength alloy springs 7 can be restricted by the multiple polytetrafluoroethylene guide sleeves 6.

[0029] In this embodiment, a circular damping pad 8 is fixedly installed on the top of each of the multiple polytetrafluoroethylene guide sleeves 6, and the other end of each of the multiple high-strength alloy springs 7 is fixedly connected to the bottom of the corresponding circular damping pad 8. The multiple circular damping pads 8 can absorb the last remaining low-frequency vibration through their own deformation.

[0030] In this embodiment, a threaded ring 10 is threaded on the outer side of the ball head base 9, which facilitates the axial movement of the threaded ring 10 along the outer thread of the ball head base 9.

[0031] In this embodiment, four guide openings are provided on the outer side of the ball head base 9. The four guide openings are connected to the same spherical groove. A linkage slider 13 is slidably installed on the inner side of each of the four guide openings. A locking brake pad 12 is fixedly installed on one side of each of the four linkage sliders 13. The four locking brake pads 12 abut against the ball head end of the same hollow ball head rod 11, which facilitates locking the ball head end of the hollow ball head rod 11 and preventing it from deviating.

[0032] In this embodiment, each of the four linkage sliders 13 has a linkage groove on its inclined surface, and four extrusion sliders 14 are slidably installed on the top of the threaded ring 10. Each of the four extrusion sliders 14 has a linkage protrusion on its inclined surface. The four linkage protrusions are respectively adapted to the corresponding linkage grooves, so that the linkage sliders 13 can be moved by the extrusion sliders 14.

[0033] Working principle: During the installation of the radio antenna, the staff installs the mounting bracket 1 onto the vehicle using bolts. Then, the angle of the antenna body 15 is adjusted to regulate the polarization direction, thereby improving the isolation of the equipment. After manually adjusting the angle of the antenna body 15, the staff rotates the threaded ring 10. The threaded ring 10 is threaded onto the outside of the ball head base 9. The threaded ring 10 moves axially along the thread on the outside of the ball head base 9. The movement of the threaded ring 10 drives the four pressing sliders 14 to move. Each of the four pressing sliders 14 has a linkage protrusion on its inclined surface. The movement of the four pressing sliders 14... The four linkage sliders 13 are pressed together. Each of the four linkage sliders 13 has a linkage groove on its inclined surface, and the four linkage protrusions are respectively adapted to the corresponding linkage grooves. The four linkage sliders 13 are slidably installed inside the corresponding guide openings. Therefore, the multiple linkage sliders 13 can only move radially along the guide openings. The four linkage sliders 13 drive the corresponding locking brake pads 12 to move, pressing the ball end of the same hollow ball head rod 11. The locking brake pads 12 are in close contact with the surface of the ball end, forming a "ring-like locking" through the symmetrically distributed clamping force at four points, thereby preventing the ball... Head offset; When the vehicle experiences bumps, sudden braking, or road impacts (such as gravel hitting the chassis), generating high-frequency impact forces, the impact force is first transmitted from the vehicle to the buffer base 2 through the fixed bracket 1. The annular damping pad 4 between the buffer base 2 and the connecting base 3 plays a role: by damping the high-frequency vibration energy through friction between rubber molecules, it weakens the impact force, while preventing rigid collision between the buffer base 2 and the connecting base 3, reducing metal resonance. The weakened impact force is then transmitted to the polyurethane buffer ring 5 and multiple high-strength alloy springs 7. The polyurethane buffer ring 5 utilizes the high elasticity of the polyurethane material. With its hysteresis characteristics, it stores some impact energy through deformation when subjected to impact force. At the same time, multiple high-strength alloy springs 7 further absorb energy through compression deformation. Multiple polytetrafluoroethylene guide sleeves 6 restrict the extension and retraction direction of the corresponding high-strength alloy springs 7 to avoid additional impact caused by lateral swing. When the remaining impact force passes through multiple circular damping pads 8, the multiple circular damping pads 8 absorb the last residual low-frequency vibration through their own deformation, ensuring that the antenna remains stable during the complex movement of the vehicle, reducing signal attenuation or structural fatigue caused by impact, and avoiding weakening of the isolation effect due to vibration.

[0034] The technological advancements of this invention compared to existing technologies are as follows: a “ring-like locking” can be formed by the clamping force distributed symmetrically at four points, thereby preventing the ball head end from shifting and locking the ball head end of the hollow ball head rod 11. This allows for precise adjustment of the antenna’s polarization direction. Furthermore, through the polyurethane buffer ring 5 and other structures, the antenna can work in coordination to ensure stability during complex vehicle movements, reducing signal attenuation or structural fatigue caused by impacts and preventing weakening of the isolation effect due to vibrations.

Claims

1. A radio antenna isolation device, characterized in that, Includes a fixed bracket (1), a buffer base (2) is fixedly installed on the top of the fixed bracket (1), a connecting base (3) is provided on the top of the buffer base (2), and a ball head base (9) is fixedly installed on the top of the connecting base (3). The top of the ball head base (9) is provided with a spherical groove, and the top of the ball head base (9) is provided with a hollow ball head rod (11), the ball head end of the hollow ball head rod (11) is slidably installed on the inner side of the spherical groove.

2. The radio antenna isolation device according to claim 1, characterized in that, The top of the hollow ball head rod (11) is fixedly installed with the antenna body (15).

3. The radio antenna isolation device according to claim 1, characterized in that, The top of each of the four support legs of the fixed bracket (1) is provided with a fixing hole.

4. The radio antenna isolation device according to claim 1, characterized in that, An annular damping pad (4) is fixedly installed on the inner side of the buffer base (2), and the inner side of the annular damping pad (4) is fixedly connected to the outer side of the connecting base (3).

5. A radio antenna isolation device according to claim 4, characterized in that, A polyurethane buffer ring (5) is fixedly installed on the bottom inner wall of the buffer base (2). The top of the polyurethane buffer ring (5) is fixedly connected to the bottom of the connecting base (3). Multiple polytetrafluoroethylene guide sleeves (6) are fixedly inserted through the top of the polyurethane buffer ring (5).

6. A radio antenna isolation device according to claim 5, characterized in that, Multiple high-strength alloy springs (7) are fixedly installed on the bottom inner wall of the buffer base (2), and the multiple high-strength alloy springs (7) are respectively located inside the corresponding polytetrafluoroethylene guide sleeves (6).

7. A radio antenna isolation device according to claim 6, characterized in that, A circular damping pad (8) is fixedly installed on the top of each of the multiple polytetrafluoroethylene guide sleeves (6), and the other end of each of the multiple high-strength alloy springs (7) is fixedly connected to the bottom of the corresponding circular damping pad (8).

8. A radio antenna isolation device according to claim 1, characterized in that, The ball head base (9) is threaded with a threaded ring (10) on its outer side.

9. A radio antenna isolation device according to claim 8, characterized in that, The ball head base (9) has four guide openings on its outer side. The four guide openings are connected to the same spherical groove. The inner side of each of the four guide openings is slidably equipped with a linkage slider (13). A locking brake pad (12) is fixedly installed on one side of each of the four linkage sliders (13). The four locking brake pads (12) abut against the ball head end of the same hollow ball head rod (11).

10. A radio antenna isolation device according to claim 9, characterized in that, Each of the four linkage sliders (13) has a linkage groove on its inclined surface. The top of the threaded ring (10) is slidably mounted with four extrusion sliders (14). Each of the four extrusion sliders (14) has a linkage protrusion on its inclined surface. The four linkage protrusions are respectively matched with the corresponding linkage grooves.

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