Cylindrical wireless local area network vehicle antenna

Abstract

The utility model provides a kind of columnar wireless local area network vehicle antenna, comprising: metal base plate, cover, antenna array, mounting bracket and radio frequency port;Cover is the hollow structure of upper thin lower thick and bottom opening, and be locked together by the screw of bottom with metal base plate;Radio frequency port is fixed and passes through metal base plate, and the lower end of radio frequency port extends out of metal base plate;Antenna array and mounting bracket are set in cover interior, and mounting bracket is middle frame cylinder, and bottom is fixed on metal base plate, and antenna array is inserted mounting bracket and is connected with the upper end of radio frequency port.This application avoids the stress cracking problem when cover is directly fastened on metal base plate, reduces the risk of cracking due to uneven stress during installation and long-term use of cover.In addition, the waterproof rubber pad is bonded on the bottom of the metal base plate, which prevents rainwater from entering the vehicle body through the roof opening, and the protection level can reach IP68.

Description

Technical Field

[0001] This utility model relates to the field of locomotive wireless communication technology, and in particular to a columnar wireless local area network vehicle-mounted antenna. Background Technology

[0002] With the rapid development of wireless communication technology, the application of Wireless Local Area Network (WLAN) technology in the rail transit field is becoming increasingly widespread, and providing passengers with wireless network access services has become an important means to improve user experience. Therefore, the design and performance of WLAN onboard antennas are particularly important.

[0003] Existing WLAN vehicle-mounted antenna products, such as those mounted on bus roofs, typically employ a cylindrical outer casing structure. This type of antenna has a uniform diameter from top to bottom, and threads are formed on the inner ring at the lower end of the casing for direct screwing onto a metal base, which is then fixed to the vehicle body. This design reveals the following drawbacks in practical applications:

[0004] 1. Because the outer cover is directly fastened to the metal base by threads, it is prone to cracking due to uneven stress during installation or long-term use. Especially during vehicle operation, forces from different directions can damage the outer cover.

[0005] 2. The antenna radome is usually made of non-metallic materials such as nylon, while the base is made of metallic materials such as aluminum alloy. Due to the difference in the coefficient of expansion and contraction ratio between nylon and aluminum alloy, thermal expansion and contraction during long-term use can cause the connection between the radome and the base to loosen, affecting the overall stability and reliability of the antenna.

[0006] 3. Existing technology lacks a waterproof design, making it impossible to guarantee reliable waterproof performance in harsh outdoor environments over extended periods. For example, rainwater may seep into the antenna, affecting its performance and potentially damaging the equipment.

[0007] 4. Existing vehicle-mounted antennas have their antenna arrays directly fixed to the base, which lacks protection and is prone to loosening and damage. Utility Model Content

[0008] In view of this, the present invention provides a columnar wireless local area network vehicle antenna to solve at least one of the aforementioned problems.

[0009] To achieve the above objectives, the present invention adopts the following solution:

[0010] This application provides a columnar wireless local area network vehicle antenna, including: a metal base plate, an outer cover, an antenna array, a mounting bracket, and a radio frequency port;

[0011] The outer cover is a hollow structure that is narrow at the top and wide at the bottom with an opening at the bottom, and is locked to the metal base plate by screws at the bottom;

[0012] The radio frequency port is fixed and passes through the metal base plate, and the lower end of the radio frequency port extends out of the metal base plate;

[0013] The antenna array and the mounting bracket are disposed inside the outer casing. The mounting bracket is a cylindrical frame with its bottom fixed to the metal base plate. The antenna array is inserted into the mounting bracket and connected to the upper end of the radio frequency port.

[0014] As an embodiment of the present invention, the above-mentioned vehicle antenna further includes: a waterproof rubber ring disposed between the mounting bracket and the metal base plate.

[0015] As an embodiment of the present invention, the above-mentioned vehicle antenna further includes: a waterproof rubber pad disposed at the bottom of the metal base plate.

[0016] As an embodiment of the present invention, the bottom of the outer cover has a circular groove, and the metal base plate has a protruding part corresponding to the circular groove to fit into the circular groove.

[0017] As an embodiment of this utility model, the outer cover is made of nylon composite material, which has weather resistance and impact resistance.

[0018] As one embodiment of this utility model, the antenna array is designed with a cylindrical symmetrical shape to obtain higher gain and better omnidirectional radiation characteristics.

[0019] As one embodiment of this utility model, the above-mentioned vehicle antenna supports dual-band 2.4G and 5G wireless local area network communication.

[0020] In one embodiment of this utility model, the mounting bracket and the metal base plate are fixedly connected by screws.

[0021] As one embodiment of this utility model, the aforementioned metal base plate is made of aluminum alloy.

[0022] As one embodiment of this utility model, the lower end of the aforementioned radio frequency port extends into an opening in the locomotive body and connects to a wireless communication device or feeder inside the vehicle body to achieve data transmission.

[0023] As can be seen from the above technical solution, the columnar wireless LAN vehicle antenna provided in this application adopts an outer cover with a design that is thinner at the top and thicker at the bottom, and is locked to a metal base plate by screws at the bottom. This design avoids the problem of stress cracking caused by directly fastening the outer cover to the metal base plate, and reduces the risk of cracking due to uneven stress during installation and long-term use. In addition, the outer cover of this application is made of non-metallic materials such as nylon, and the base is made of metallic materials such as aluminum alloy. Through special structural design and material selection, the effects of thermal expansion and contraction are reduced. The connection between the outer cover and the metal base plate is more stable, avoiding the problem of loosening due to long-term use. This application also seals the inside of the outer cover by placing a waterproof rubber ring between the mounting bracket and the metal base plate. At the same time, a waterproof rubber pad is glued to the bottom of the metal base plate to prevent rainwater from entering the vehicle body through the opening in the roof, and the protection level can reach IP68. Finally, this application uses a mounting bracket specially designed for fixing the antenna array to fix the antenna array to the metal base plate. This design improves the antenna's resistance to vibration and shock, enabling it to operate stably and reliably for a long time, even in high-impact and high-vibration environments such as high-speed trains and locomotives. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0025] Figure 1 This is a cross-sectional view of a columnar wireless local area network vehicle antenna provided in an embodiment of this application;

[0026] Figure 2 This is a front view of a columnar wireless local area network vehicle antenna provided in an embodiment of this application;

[0027] Figure 3 This is a bottom view of a columnar wireless local area network vehicle antenna provided in an embodiment of this application;

[0028] Figure 4 This is a 3D roll view of a columnar wireless local area network vehicle antenna provided in an embodiment of this application;

[0029] Figure 5 This is a front view of a columnar wireless local area network vehicle antenna provided in an embodiment of this application after removing the outer cover;

[0030] Figure 6 This is a top view of a columnar wireless local area network vehicle antenna provided in an embodiment of this application after removing its outer cover.

[0031] Icon labels:

[0032] 1: Outer cover;

[0033] 2: Waterproof rubber pad;

[0034] 3: Radio frequency port;

[0035] 4: Metal base plate;

[0036] 5: Waterproof rubber ring;

[0037] 6: Install the bracket;

[0038] 7: Antenna array. Detailed Implementation

[0039] It should be noted that the term "comprising" and any variations thereof in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method / process, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods / processes, products, or devices.

[0040] In this invention, the terms "upper," "lower," "inner," "outer," "middle," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0041] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0042] Furthermore, the terms "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] like Figure 1 The image shown is a cross-sectional view of a columnar wireless local area network vehicle antenna provided in an embodiment of this application. Figure 1As can be seen, it includes: a metal base plate 4, an outer casing 1, an antenna array 7, a mounting bracket 6, and an RF port 3. The following description can also be combined with... Figures 2 to 4 To understand, among them Figure 2 A front view of the vehicle-mounted antenna. Figure 3 This is a bottom view of the vehicle-mounted antenna. Figure 4 This is a 3D roll diagram of the vehicle-mounted antenna.

[0044] The outer cover 1 is a hollow structure that is narrower at the top and wider at the bottom, with an opening at the bottom. The bottom opening is secured to the metal base plate 4 with screws. The main function of the outer cover 1 is to protect the internal components of the antenna from harsh external environments such as hail, birds, falling rocks, and rain. In this embodiment, the outer cover 1 has a narrower top and wider bottom structure. The thicker bottom increases the contact area with the metal base plate 4, improving the connection strength and thus enhancing the overall structural stability of the antenna. The narrower top and wider bottom structure also helps to disperse external forces, reducing stress concentration on the outer cover 1 during installation and use, and lowering the risk of cracking.

[0045] In one embodiment of this application, the outer cover 1 is made of nylon composite material, which has weather resistance and impact resistance.

[0046] The RF port 3 is fixed and passes through the metal base plate 4, with its lower end extending out of the metal base plate 4. When the vehicle antenna is installed on the vehicle body, such as the roof, the lower end of the RF port 3 can extend into an opening in the vehicle body to connect with wireless communication equipment or feeders inside the vehicle to achieve data transmission. The RF port 3 can be, for example, an SMA connector.

[0047] Both the antenna array 7 and the mounting bracket 6 are housed inside the outer casing 1. The antenna array 7 is the core component of the WLAN vehicle-mounted antenna. In this embodiment, it can adopt a cylindrical symmetrical design, which provides higher gain and better omnidirectional radiation characteristics. The antenna array 7 supports dual-band 2.4G and 5G WLAN wireless communication.

[0048] Mounting bracket 6 is specifically designed for fixing antenna array 7. It is a cylindrical body with a mid-frame. Antenna array 7 can be inserted into mounting bracket 6 and connected to the upper end of RF port 3. A portion of the upper part of antenna array 7 protrudes outside mounting bracket 6. See [link to documentation] for details. Figure 5 This is a front view after removing the outer cover 1. By adjusting the proportions of the antenna array 7 inside and outside the mounting bracket 6, parameters such as antenna gain, radiation pattern, and impedance matching can be optimized, thereby improving communication quality. The design of the mounting bracket 6 improves the antenna's resistance to vibration and shock, ensuring long-term stable and reliable operation even on high-speed trains and locomotives. The mounting bracket 6 is fixed to the metal base plate 4 with screws; its material can be ABS plastic, etc.

[0049] In one embodiment of this application, the vehicle-mounted antenna further includes a waterproof rubber ring 5 disposed between the mounting bracket 6 and the metal base plate 4. This waterproof rubber ring 5 can also be found in [other locations]. Figure 6 As shown, this is a top view after removing the outer cover 1. The waterproof rubber ring 5 seals the inside of the outer cover 1, so that after the outer cover 1 is placed on the metal base plate 4, a sealed space can be formed inside to prevent rainwater and other substances from seeping in.

[0050] In another embodiment of this application, the mounting bracket 6 and the metal base plate 4 are fixedly connected by screws. This connection method improves the antenna's resistance to vibration and shock, ensuring long-term stable and reliable operation even on high-speed trains and locomotives.

[0051] In another embodiment of this application, the aforementioned metal base plate 4 is made of aluminum alloy. Compared to other metal materials, aluminum alloy has a lower density, which can reduce the overall weight of the antenna. Furthermore, it has good corrosion resistance, enabling it to withstand harsh outdoor environments. Additionally, aluminum alloy has certain heat dissipation properties, which can help dissipate heat from the internal components of the antenna.

[0052] In another embodiment of this application, the vehicle-mounted antenna further includes a waterproof rubber pad 2 disposed at the bottom of the metal base plate 4. When the vehicle-mounted antenna is installed on the mounting surface on the roof of the vehicle, the waterproof rubber pad 2 can ensure that rainwater will not enter the vehicle body through the opening in the roof.

[0053] In another embodiment of this application, the bottom of the outer cover 1 has a circular groove, and the metal base plate 4 has a protruding part corresponding to the circular groove to fit into the circular groove. After the metal base plate 4 is fitted into the circular groove, it can be locked and fixed with the metal base plate 4 using 10 self-tapping screws. Due to the presence of the internal waterproof rubber ring 5, a sealed space is formed between the outer cover 1 and the metal base plate 4 after locking and fixing, thereby protecting the antenna array 7 in the sealed space from the influence of the harsh external environment.

[0054] As can be seen from the above technical solution, the columnar wireless LAN vehicle antenna provided in this application adopts an outer cover with a design that is thinner at the top and thicker at the bottom, and is locked to a metal base plate by screws at the bottom. This design avoids the problem of stress cracking caused by directly fastening the outer cover to the metal base plate, and reduces the risk of cracking due to uneven stress during installation and long-term use. In addition, the outer cover of this application is made of non-metallic materials such as nylon, and the base is made of metallic materials such as aluminum alloy. Through special structural design and material selection, the effects of thermal expansion and contraction are reduced. The connection between the outer cover and the metal base plate is more stable, avoiding the problem of loosening due to long-term use. This application also seals the inside of the outer cover by placing a waterproof rubber ring between the mounting bracket and the metal base plate. At the same time, a waterproof rubber pad is glued to the bottom of the metal base plate to prevent rainwater from entering the vehicle body through the opening in the roof, and the protection level can reach IP68. Finally, this application uses a mounting bracket specially designed for fixing the antenna array to fix the antenna array to the metal base plate. This design improves the antenna's resistance to vibration and shock, enabling it to operate stably and reliably for a long time, even in high-impact and high-vibration environments such as high-speed trains and locomotives.

[0055] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A columnar wireless local area network vehicle-mounted antenna, characterized in that, include: Metal base plate, outer casing, antenna array, mounting bracket and RF port; The outer cover is a hollow structure that is narrow at the top and wide at the bottom with an opening at the bottom, and is locked to the metal base plate by screws at the bottom; The radio frequency port is fixed and passes through the metal base plate, and the lower end of the radio frequency port extends out of the metal base plate; The antenna array and the mounting bracket are disposed inside the outer casing. The mounting bracket is a cylindrical frame with its bottom fixed to the metal base plate. The antenna array is inserted into the mounting bracket and connected to the upper end of the radio frequency port.

2. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, Also includes: A waterproof rubber ring is disposed between the mounting bracket and the metal base plate.

3. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, Also includes: A waterproof rubber pad is installed at the bottom of the metal base plate.

4. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, The bottom of the outer cover has a circular groove, and the metal base plate has a protruding part corresponding to the circular groove to fit into the circular groove.

5. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, The outer cover is made of nylon composite material, which is weather-resistant and impact-resistant.

6. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, The antenna array is designed with a cylindrical symmetry to achieve higher gain and better omnidirectional radiation characteristics.

7. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, The vehicle-mounted antenna supports dual-band 2.4G and 5G wireless local area network communication.

8. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, The mounting bracket is fixedly connected to the metal base plate by screws.

9. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, The metal base plate is made of aluminum alloy.

10. The columnar wireless local area network vehicle-mounted antenna as described in claim 1, characterized in that, The lower end of the radio frequency port extends into an opening in the locomotive body and connects to a wireless communication device or feeder inside the vehicle body to enable data transmission.

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