Antenna dustproof and waterproof device
Patent Information
- Application Number
- CN202522421945.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-11-14
AI Technical Summary
然而，这种天线结构形式，不仅使得天线整体重量大增，更重要的是，在环境温度变化时，尤其时在太阳暴晒的情况下，因气体膨胀，天线的密封性容易遭到破坏
[0015]基于上述技术方案，本申请实施例至少具有以下有益效果：当该装置内部因温度升高或降低导致气压变化时，透气防水阀能及时平衡内外气压，这种动态气压平衡能力有效避免了传统全密封结构因内部气体膨胀收缩导致的密封胶开裂、壳体变形或界面泄漏等问题，从根本上提升了密封可靠性，同时确保内部的干燥与清洁，为天线提供了稳定的工作环境。该天线防尘防水装置能够在保证天线与电连接器可靠电连接和信号传输的同时，有效防止沙尘、水气等外界环境因素侵入，同时具备透气功能，避免因环境温度变化导致内部气压变化而破坏密封性能或影响天线电气性能。
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Figure CN224652691U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of antenna protection technology, and in particular to an antenna dustproof and waterproof device. Background Technology
[0002] With the development of science and technology, phased array radars are widely used in meteorological detection, ground and ship surveillance, and airborne fire control. As a key component, the antenna element, whether using a slotted waveguide or a microstrip antenna, is mounted on a single plane. To enable the radar to adapt to various complex environmental conditions, high requirements are placed on the installation structure of the antenna element and environmental protection.
[0003] Common phased array antennas arrange their elements directly on a single structural component. To address dust and water resistance, the antenna is designed as a sealed enclosure, consisting of a metal frame on all sides and an insulated radome on the front. However, this structure not only significantly increases the overall weight of the antenna, but more importantly, it makes the antenna's seal vulnerable to damage due to gas expansion caused by changes in ambient temperature, especially under direct sunlight. Once this damage occurs, the intrusion of dust and moisture will inevitably affect the antenna's overall performance. Utility Model Content
[0004] This application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a dustproof and waterproof antenna device that effectively prevents the antenna's seal from being easily compromised by changes in ambient temperature, thereby improving the antenna's sealing performance.
[0005] A dustproof and waterproof antenna device for connecting an antenna and an electrical connector, the electrical connector having a head and a wiring portion, comprising: The antenna is housed inside the protective tube. A support member has a support portion and a mating portion. The support portion is connected to the mating portion. The support member is mated to one end of the protective tube through the mating portion. The support member has a first channel that passes through the support portion and the mating portion. The first channel extends along the length direction of the protective tube. The support member has a second channel. One end of the second channel is connected to the first channel, and the other end passes through the outer wall of the support portion. A fastener that connects to the support portion and fixes the electrical connector to the support portion, the fastener having a first through hole that at least partially overlaps with the second channel; A breathable and waterproof valve is fitted into the first through hole and the second channel, which at least partially overlap.
[0006] In an optional or preferred embodiment, the outer periphery of the head is provided with an assembly step, the fastener is provided with a second through hole, the edge of the second through hole is provided with a clamping step, the head of the electrical connector extends out from the second through hole, and the clamping step on the fastener cooperates with the assembly step on the electrical connector to press the electrical connector onto the support.
[0007] In an optional or preferred embodiment, the support portion is provided with a first end face, and the electrical connector is provided with mating surfaces on both sides of the wiring portion, wherein the first end face and the mating surfaces are pressed and fitted together.
[0008] In an optional or preferred embodiment, the inner wall of the second through hole is provided with an inwardly inclined slope to facilitate the application of adhesive.
[0009] In an optional or preferred embodiment, the mating part includes a first embedding plate and a second embedding plate, the first embedding plate and the second embedding plate being located on both sides of the first channel, the side of the first embedding plate facing the protective tube being provided with a first arc-shaped outer wall adapted to the shape of the inner wall of the protective tube, and the side of the second embedding plate facing the protective tube being provided with a second arc-shaped outer wall adapted to the shape of the inner wall of the protective tube.
[0010] In an optional or preferred embodiment, the length of the first embedded plate is greater than the length of the second embedded plate, the protective tube is provided with a first connecting hole, the first embedded plate is provided with a second connecting hole, the first connecting hole and the second connecting hole are aligned, and a first connecting bolt is connected in the first connecting hole and the second connecting hole.
[0011] In an optional or preferred embodiment, the thickness of the first embedded plate is greater than the thickness of the second embedded plate, and an eccentric ring is sleeved on the outside of the protective tube. The wall thickness of the eccentric ring is opposite to that of the first embedded plate and the second embedded plate. The eccentric ring presses the protective tube against the first arc-shaped outer wall of the first embedded plate and the second arc-shaped outer wall of the second embedded plate.
[0012] In an optional or preferred embodiment, the fastener has a receiving cavity, the first through hole communicates with the receiving cavity, the fastener surrounds the outside of the support and the eccentric ring, and the inner wall of the receiving cavity abuts against the outer wall of the eccentric ring.
[0013] In an optional or preferred embodiment, the support portion is provided with a third connecting hole, and the fastener is provided with a fourth connecting hole. The third connecting hole and the fourth connecting hole are aligned, and a second connecting bolt is connected in the third connecting hole and the fourth connecting hole to connect the fastener to the support portion.
[0014] In an optional or preferred embodiment, a mounting bracket is further included, which is fixed to the outer wall of the fastener by the second connecting bolt.
[0015] Based on the above technical solution, the embodiments of this application have at least the following beneficial effects: When the internal air pressure changes due to temperature rise or fall, the breathable and waterproof valve can promptly balance the internal and external air pressure. This dynamic air pressure balancing capability effectively avoids problems such as sealant cracking, shell deformation, or interface leakage caused by the expansion and contraction of internal gas in traditional fully sealed structures, fundamentally improving sealing reliability. Simultaneously, it ensures internal dryness and cleanliness, providing a stable working environment for the antenna. This antenna dustproof and waterproof device can effectively prevent the intrusion of external environmental factors such as sand, dust, and water vapor while ensuring reliable electrical connection and signal transmission between the antenna and the electrical connector. It also has a breathable function, preventing damage to the sealing performance or impact on the antenna's electrical performance due to changes in internal air pressure caused by ambient temperature variations. Attached Figure Description
[0016] The present application will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the structure of an antenna dustproof and waterproof device provided in one embodiment of this application; Figure 2 yes Figure 1 A cross-sectional view of the embodiment shown; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 yes Figure 1 A cross-sectional view of the support member in the illustrated embodiment; Figure 5 yes Figure 1 A cross-sectional view of the fastener in the illustrated embodiment; Figure 6 yes Figure 1 The diagram shows the connection between the electrical connector and the antenna in the illustrated embodiment.
[0017] Figure label: 10-Protective tube; 20-Support member; 21-Support part; 211-First end face; 212-Third connecting hole; 22-Mating part; 221-First embedded plate; 222-Second embedded plate; 223-Second connecting hole; 23-First channel; 24-Second channel; 30-Fastener; 31-First through hole; 32-Second through hole; 33-Pressure step; 34-Ceiling surface; 35-Receiving cavity; 36-Fourth connecting hole; 40-Ventilating and waterproof valve; 50-Antenna; 60-Electrical connector; 61-Head; 62-Assembly step; 63-Wiring part; 64-Mating surface; 70-First connecting bolt; 80-Eccentric ring; 90-Second connecting bolt; 100-Mounting bracket. Detailed Implementation
[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0024] With the development of science and technology, phased array radars are widely used in meteorological detection, ground and ship surveillance, and airborne fire control. As a key component, the antenna element, whether using a slotted waveguide or a microstrip antenna, is mounted on a single plane. To enable the radar to adapt to various complex environmental conditions, high requirements are placed on the installation structure of the antenna element and environmental protection.
[0025] Common phased array antennas arrange their elements directly on a single structural component. To address dust and water resistance, the antenna is designed as a sealed enclosure, consisting of a metal frame on all sides and an insulated radome on the front. However, this structure not only significantly increases the overall weight of the antenna, but more importantly, it makes the antenna's seal vulnerable to damage due to gas expansion caused by changes in ambient temperature, especially under direct sunlight. Once this damage occurs, the intrusion of dust and moisture will inevitably affect the antenna's overall performance.
[0026] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.
[0027] This application provides a dustproof and waterproof antenna device for connecting an antenna and an electrical connector, the electrical connector having a head and a wiring portion. This device effectively prevents the intrusion of external environmental factors such as sand, dust, and moisture while ensuring reliable electrical connection and signal transmission between the antenna and the electrical connector. It also has a breathable function to prevent changes in internal air pressure due to ambient temperature variations from damaging the sealing performance or affecting the antenna's electrical performance. It is particularly suitable for phased array radar systems operating in harsh environments.
[0028] See Figures 1 to 6 The antenna dustproof and waterproof device provided in this application embodiment includes a protective tube 10, a support member 20, a fastener 30, and a breathable and waterproof valve 40.
[0029] An antenna 50 is housed inside the protective tube 10. The antenna 50 can be a single radiating element of a phased array radar, such as a microstrip antenna or a waveguide slot antenna. The protective tube 10 provides mechanical protection, structural support, and environmental isolation for the antenna 50, preventing damage during installation and use due to impacts, vibrations, or the ingress of foreign objects. The protective tube 10 can be made of metal (such as aluminum alloy or stainless steel) or high-strength composite materials (such as fiberglass-filled PEEK), possessing certain rigidity, corrosion resistance, and electromagnetic compatibility. The cross-sectional shape of the protective tube 10 can be circular, rectangular, or other shapes adapted to the antenna's shape.
[0030] The support member 20 has a support portion 21 and a mating portion 22. The support portion 21 and the mating portion 22 can be integrally molded, for example, by casting, machining, or injection molding, or they can be separate structures fixed together by welding, bonding, or threaded connection. The support member 20 is connected to one end of the protective tube 10 via its mating portion 22. The support member 20 has a first channel 23 that passes through the support portion 21 and the mating portion 22, and the first channel 23 is along the length direction of the protective tube 10 (i.e.,...). Figure 2 Extending vertically, it allows the feed section of antenna 50 or connecting cables to pass through for connection with electrical connector 60. The support member 20 also has a second channel 24, one end of which connects to the first channel 23, and the other end penetrates the outer wall of the support member 21. The second channel 24 provides installation space for the ventilated and waterproof valve 40 and establishes a controllable ventilation path between the internal space and the external environment.
[0031] Fastener 30 connects to support portion 21 and fixes electrical connector 60 to support portion 21. Fastener 30 has a first through hole 31, which at least partially overlaps with second channel 24, forming a complete mounting cavity for accommodating ventilated and waterproof valve 40. Ventilated and waterproof valve 40 is assembled in this mounting cavity. Ventilated and waterproof valve 40 is a functional element that allows gas molecules to pass through but blocks liquid water and solid dust particles. Its working principle can be based on expanded polytetrafluoroethylene (ePTFE) technology with microporous membranes. When the internal air pressure changes due to temperature rise or fall, ventilated and waterproof valve 40 can balance the internal and external air pressure in a timely manner. This dynamic air pressure balancing capability effectively avoids problems such as sealant cracking, shell deformation, or interface leakage caused by internal gas expansion and contraction in traditional fully sealed structures, fundamentally improving sealing reliability, while ensuring internal dryness and cleanliness, providing a stable working environment for the antenna.
[0032] The antenna dustproof and waterproof device provided in this application integrates the protective tube 10, support member 20, fastener 30, and breathable waterproof valve 40 into a compact module. This not only simplifies the external structure of the antenna system but also achieves reliable connection and overall sealing between the antenna 50 and the electrical connector 60. The device is compact, easy to assemble, and highly reliable, effectively solving the problem of sealing damage and performance degradation caused by the "breathing effect" in traditional sealed antennas. It significantly improves the long-term operational stability and service life of the antenna in complex environments.
[0033] To more fully demonstrate the technical solutions and diversity of this application, the technical solutions of this application will be described in detail below with reference to several specific embodiments. Example
[0034] See Figures 1 to 6 This embodiment demonstrates a structure for an antenna dustproof and waterproof device.
[0035] In this embodiment, the outer periphery of the head 61 of the electrical connector 60 is provided with an assembly step 62. The fastener 30 is provided with a second through hole 32, and the edge of the second through hole 32 is provided with an inwardly protruding clamping step 33. During assembly, the head 61 of the electrical connector 60 extends from the second through hole 32, allowing the clamping step 33 on the fastener 30 to engage with the assembly step 62 on the electrical connector 60. When the fastener 30 is fixed, the clamping step 33 presses against the assembly step 62, thereby generating an axial preload force that firmly presses the electrical connector 60 against the support portion 21 of the support member 20. This step-fitting method ensures accurate positioning and uniform clamping force, effectively preventing the electrical connector 60 from loosening under vibration, ensuring the stability of signal transmission. Simultaneously, this integrated design perfectly combines the fixing, sealing, and ventilation functions of the electrical connector, greatly simplifying the external structure of the antenna system.
[0036] Furthermore, to ensure a tight seal between the electrical connector 60 and the support portion 21, the support portion 21 has a flat first end face 211. Correspondingly, the electrical connector 60 has annular mating surfaces 64 on both sides of its wiring portion 63. When the electrical connector 60 is pressed, the first end face 211 of the support portion 21 and the mating surface 64 of the electrical connector 60 press against each other, forming a metal-metal (or metal-sealing ring) sealing interface. Preferably, a sealing ring groove (not shown in the figure) can be formed on the first end face 211 or the mating surface 64, and an O-ring rubber sealing ring can be installed to further enhance the sealing effect and prevent moisture from entering along the interface gap. The ventilated and waterproof valve 40 is installed as follows: the second channel 24 extends inward from the outer wall of the support portion 21 and communicates with the first channel 23. After assembly, the first through hole 31 on the fastener 30 is fully aligned with and partially overlaps the outlet end of the second channel 24, forming a cylindrical mounting cavity. The ventilated and waterproof valve 40 is pressed into or bonded to this mounting cavity. To ensure the sealing of the ventilated and waterproof valve 40, a sealing ring or sealant can be applied between its outer wall and the inner wall of the mounting cavity. This modular design allows for easy maintenance without disassembling the entire antenna array, even if the ventilated and waterproof valve or electrical connector needs to be replaced, significantly reducing the total life cycle cost.
[0037] In some preferred embodiments, the inner wall of the second through hole 32 is provided with an inwardly inclined slope 34. This slope 34 provides convenient space for injecting sealant. During sealant application, guided and accumulated by the slope 34, the sealant can form a complete and uniformly thick sealing ring, effectively filling the assembly gap between the electrical connector 60 and the second through hole 32, thereby greatly enhancing the dust and water resistance at this location and improving the protection level of the device in harsh environments. Example
[0038] In this embodiment, the mating portion 22 of the support member 20 includes a first embedding plate 221 and a second embedding plate 222. The first embedding plate 221 and the second embedding plate 222 are located on both sides of the first channel 23 and extend toward the protective tube 10. The side of the first embedding plate 221 facing the protective tube 10 is provided with a first arc-shaped outer wall adapted to the shape of the inner wall of the protective tube 10. Similarly, the side of the second embedding plate 222 facing the protective tube 10 is provided with a second arc-shaped outer wall adapted to the shape of the inner wall of the protective tube 10. This design allows the support member 20 to be inserted into the end of the protective tube 10 like a "plug". Through the tight fit between the arc-shaped outer wall and the inner wall of the protective tube, a large area of contact and support is provided, achieving high connection strength and precise positioning.
[0039] To provide more reliable axial and circumferential fixation and optimize the assembly process, this embodiment employs an asymmetrical design. The length of the first embedding plate 221 is greater than the length of the second embedding plate 222. A first connecting hole is formed on the wall of the protective tube 10, corresponding to the position of the longer first embedding plate 221. A second connecting hole 223 is correspondingly formed on the first embedding plate 221. During assembly, the first connecting hole and the second connecting hole 223 are aligned, and the first connecting bolt 70 passes through and is tightened. Because the first embedding plate 221 is longer, it provides sufficient connection strength and stability, while the second embedding plate 222 is shorter, facilitating alignment and insertion during assembly. This insertion-type connection, combined with a single-bolt locking design, makes the assembly process simple and quick, particularly suitable for rapid installation and maintenance in space-constrained antenna arrays. Furthermore, by primarily placing the connection structure inside the protective tube, it reduces the occupation of external space, which is beneficial for achieving a high-density layout of antenna elements.
[0040] The installation position and function of the breathable and waterproof valve 40 are similar to those in the first embodiment. The electrical connector 60 can be fixed using the stepped clamping method of the first embodiment, or other known fixing methods. While achieving a mechanical connection, sealant can be applied or a sealing ring can be installed at the contact area between the embedded plate and the inner wall of the protective tube to ensure the dustproof and waterproof rating at this location. Combined with the air pressure balancing function of the breathable and waterproof valve, the overall environmental protection and long-term reliability of the device are achieved. Example
[0041] In this embodiment, the mating portion 22 of the support member 20 also includes a first embedding plate 221 and a second embedding plate 222. Unlike the second embodiment, in this embodiment, the thickness of the first embedding plate 221 is greater than the thickness of the second embedding plate 222. This means that the first embedding plate 221 is "thicker" and the second embedding plate 222 is "thinner", thereby forming an asymmetrical support at the end inlet of the protective tube 10.
[0042] The core improvement of this embodiment lies in the addition of an eccentric ring 80 around the outside of the protective tube 10. The center of the inner hole of the eccentric ring 80 does not coincide with the center of its outer hole, resulting in uneven thickness of its ring wall. Specifically, the thickness distribution of the eccentric ring 80 is designed to be opposite to the thickness distribution of the first embedded plate 221 and the second embedded plate 222. That is, the side of the eccentric ring 80 with a thinner wall corresponds to the thicker first embedded plate 221, while the side with a thicker wall corresponds to the thinner second embedded plate 222.
[0043] During assembly, the first and second insert plates 221 and 222 of the support member 20 are first inserted into the end of the protective tube 10, and then the eccentric ring 80 is fitted onto the end of the protective tube 10. When the eccentric ring 80 is rotated, due to the eccentricity of its inner and outer circles, the change in the ring wall thickness will generate an uneven radial pressure on the protective tube 10. This pressure will force the tube wall of the protective tube 10 to deform inward, pressing more tightly against the first arc-shaped outer wall of the first insert plate 221 and the second arc-shaped outer wall of the second insert plate 222. By adjusting the rotation angle of the eccentric ring 80, the magnitude of the clamping force can be precisely controlled, achieving a stepless adjustable, self-locking tight fit.
[0044] Furthermore, the fastener 30 has a receiving cavity 35. The first through hole 31 connects to the receiving cavity 35. After assembly, the fastener 30 surrounds the support 20 and the eccentric ring 80, with the inner wall of its receiving cavity 35 abutting against the outer wall of the eccentric ring 80. This design not only protects the eccentric ring 80 and prevents loosening by external forces, but also makes the overall external contour of the device more regular. The support 21 has a third connecting hole 212, and the fastener 30 has a fourth connecting hole 36. By passing the second connecting bolt 90 through the third connecting hole 212 and the fourth connecting hole 36 and tightening it, the fastener 30 can be firmly connected to the support 21, and the entire assembly can be locked together. This design allows the fastener not only to fix the electrical connector, but also to serve as an external protective shell, achieving a high degree of functional integration and further optimizing space utilization and structural weight.
[0045] In addition, this embodiment may also include a mounting bracket 100. The mounting bracket 100 can be fixed together with the fastener 30 to the outer wall by means of a second connecting bolt 90, or fixed by means of additional connecting holes. The mounting bracket 100 is used to mount the entire antenna dustproof and waterproof device to the base plate or frame structure of the radar array.
[0046] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A dustproof and waterproof antenna device for connecting an antenna and an electrical connector, said electrical connector having a head and a wiring portion, characterized in that, include: The antenna is housed inside the protective tube. A support member has a support portion and a mating portion. The support portion is connected to the mating portion. The support member is mated to one end of the protective tube through the mating portion. The support member has a first channel that passes through the support portion and the mating portion. The first channel extends along the length direction of the protective tube. The support member has a second channel. One end of the second channel is connected to the first channel, and the other end passes through the outer wall of the support portion. A fastener that connects to the support portion and fixes the electrical connector to the support portion, the fastener having a first through hole that at least partially overlaps with the second channel; A breathable and waterproof valve is fitted into the first through hole and the second channel, which at least partially overlap.
2. The antenna dustproof and waterproof device according to claim 1, characterized in that: The outer periphery of the head is provided with an assembly step, the fastener is provided with a second through hole, the edge of the second through hole is provided with a clamping step, the head of the electrical connector extends out from the second through hole, and the clamping step on the fastener cooperates with the assembly step on the electrical connector to press the electrical connector onto the support.
3. The antenna dustproof and waterproof device according to claim 2, characterized in that: The support portion is provided with a first end face, and the electrical connector is provided with mating surfaces on both sides of the wiring portion, and the first end face and the mating surfaces are pressed and fitted together.
4. The antenna dustproof and waterproof device according to claim 2, characterized in that: The inner wall of the second through hole is provided with an inwardly inclined slope to facilitate the application of adhesive.
5. The antenna dustproof and waterproof device according to claim 1, characterized in that: The mating part includes a first embedding plate and a second embedding plate, which are located on both sides of the first channel. The side of the first embedding plate facing the protective tube is provided with a first arc-shaped outer wall adapted to the shape of the inner wall of the protective tube, and the side of the second embedding plate facing the protective tube is provided with a second arc-shaped outer wall adapted to the shape of the inner wall of the protective tube.
6. The antenna dustproof and waterproof device according to claim 5, characterized in that: The length of the first embedded plate is greater than the length of the second embedded plate. The protective tube is provided with a first connecting hole, and the first embedded plate is provided with a second connecting hole. The first connecting hole and the second connecting hole are aligned, and a first connecting bolt is connected in the first connecting hole and the second connecting hole.
7. The antenna dustproof and waterproof device according to claim 5, characterized in that: The thickness of the first embedded plate is greater than that of the second embedded plate. An eccentric ring is sleeved on the outside of the protective tube. The wall thickness of the eccentric ring is opposite to that of the first and second embedded plates. The eccentric ring presses the protective tube against the first arc-shaped outer wall of the first embedded plate and the second arc-shaped outer wall of the second embedded plate.
8. The antenna dustproof and waterproof device according to claim 7, characterized in that: The fastener has a receiving cavity, the first through hole communicates with the receiving cavity, the fastener surrounds the outside of the support and the eccentric ring, and the inner wall of the receiving cavity abuts against the outer wall of the eccentric ring.
9. The antenna dustproof and waterproof device according to claim 1, characterized in that: The support portion is provided with a third connecting hole, and the fastener is provided with a fourth connecting hole. The third connecting hole and the fourth connecting hole are aligned, and a second connecting bolt is connected in the third connecting hole and the fourth connecting hole to connect the fastener to the support portion.
10. The antenna dustproof and waterproof device according to claim 9, characterized in that: It also includes a mounting bracket, which is fixed to the outer wall of the fastener by the second connecting bolt.