A mushroom head antenna

Abstract

The utility model relates to the technical field of wifi antenna, concretely is a kind of mushroom head antenna.The antenna includes upper cover, lower cover, antenna spring piece, coaxial line, is also equipped with silica gel pad, foam and hollow bolt.Upper cover is straight fluted mouth shape and inside is equipped with stepped installation space, lower cover is cooperated with upper cover mounting groove by limiting protrusion, and the both are reinforced by positioning column alpha and positioning column beta;Antenna spring piece lower part is positive cross shape, middle part is equipped with square frame, and upper part circumferential distribution radiating piece is fixed by multiple positioning structure;Coaxial line is connected with antenna spring piece by hollow bolt.Protection is buffered by silica gel pad, and foam is dustproof seal.The antenna structure is stable, signal radiation is uniform, and protective, and it is applicable to router and other wifi equipment signal enhancement.

Description

Technical Field

[0001] This utility model relates to the technical field of Wi-Fi antennas, specifically a mushroom-shaped antenna. Background Technology

[0002] With the rapid development of information technology, Wi-Fi, as the core of wireless local area network technology, has been deeply integrated into various scenarios such as homes, offices, and industries, becoming a key carrier for people to obtain information and achieve device interconnection. The stability, coverage, and transmission efficiency of Wi-Fi signals directly determine user experience and productivity. As the core component for Wi-Fi signal transmission and reception, the performance of the Wi-Fi antenna plays a decisive role in the overall operation of the Wi-Fi system. Among the many types of Wi-Fi antennas, the mushroom-shaped antenna, due to its compact size and flexible installation, has become one of the mainstream choices for external Wi-Fi antennas, widely used in routers, Wi-Fi signal amplifiers, and other devices.

[0003] However, the mushroom-shaped antennas currently on the market still have many technical pain points in practical applications. These pain points not only affect the user experience, but also limit the application expansion of Wi-Fi technology in complex scenarios to a certain extent.

[0004] First, existing mushroom-shaped antennas generally suffer from poor structural stability and are prone to loosening. Most products use simple snap-fit ​​connections between the top and bottom covers, or are fixed with only a single bolt. During long-term use, this connection method is prone to causing the snap-fit ​​to loosen and the bolt to shift due to vibration, temperature changes, or slight impacts, which in turn causes gaps to appear between the top and bottom covers.

[0005] Secondly, uneven signal radiation and high transmission loss are another major drawback of existing mushroom-shaped antennas. On the one hand, the antenna spring radiating plate layout of existing products lacks scientific design, with most adopting an asymmetrical layout or having an insufficient number of radiating plates. This results in significant differences in signal radiation intensity across different planes (such as the XOY, XOZ, and YOZ planes). For example, some antennas have high signal strength on the front (XOY plane), but the signal strength drops sharply on the side (XOZ plane) or back (YOZ plane), creating obvious signal coverage blind spots and severely affecting the coverage range and transmission rate of Wi-Fi signals.

[0006] Furthermore, insufficient protective performance is a significant reason for the short lifespan of existing mushroom-shaped antennas. On one hand, the antenna lacks an effective internal buffer structure, with the antenna springs and upper and lower covers often in hard contact. During transportation, the antenna may be bumped or collide with other objects, causing the antenna springs to directly impact the upper and lower covers, resulting in deformation or breakage. If the antenna is accidentally dropped while being moved by the user, internal components are also easily damaged. On the other hand, the gaps between the upper and lower covers are often not effectively sealed, resulting in poor sealing. Dust, oil, moisture, and impurities can corrode the antenna springs, coaxial connectors, and other metal components, leading to poor contact, obstructed signal transmission, accelerated component aging, and a shortened antenna lifespan. Utility Model Content

[0007] To address the shortcomings of existing technologies, this invention provides a mushroom-shaped antenna, which solves the problems mentioned in the background section. Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a mushroom-shaped antenna. The device includes an upper cover, a lower cover, an antenna spring, and a coaxial cable. The upper cover is characterized by a straight slot shaped like an inward-sloping groove, with an internal stepped mounting space identical in shape to the external surface. The lower surface of the mounting space has mounting grooves along its contour. The upper surface of the upper cover has four tubular positioning posts (A) arranged in a symmetrical cross pattern. The lower cover is located on the lower surface of the mounting space. Its outer contour matches the lower end of the upper cover, and its upper surface edge has limiting protrusions that match the mounting grooves. It has a mounting through-hole in its center. The upper surface of the lower cover has four positioning posts (B) arranged in a symmetrical cross pattern. The tops of the positioning posts (B) are stepped and matched with the positioning posts (A). The antenna spring is located within the mounting space. Its lower part is symmetrically cross-shaped, with four positioning through-holes that match the positioning posts (B). Its middle part is a square frame fixed to the lower center. The upper part has several radiating plates evenly distributed circumferentially on the top of the square frame. The coaxial cable is located below the lower cover, with one end extending from the center of the mounting through-hole through the lower part of the antenna spring into the square frame.

[0009] Preferably, a silicone pad is provided between the center of the lower surface of the antenna spring and the lower cover.

[0010] Preferably, a silicone pad is provided between the upper surface of the antenna spring and the upper cover.

[0011] Preferably, foam is provided between the lower surface of the lower cover and the lower surface of the upper cover.

[0012] Preferably, the upper surface of the lower cover is further provided with a positioning post C and a cross positioning block, both of which are connected to the antenna spring.

[0013] Preferably, a bolt is fitted inside the mounting through hole, and the hole is hollow inside so that a coaxial line can pass through it.

[0014] This utility model provides a mushroom-shaped antenna, which has the following beneficial effects: 1. This utility model constructs a robust assembly system through a multi-positioning structure, effectively solving the problem of easy loosening in existing antenna structures. The mounting groove of the upper cover and the limiting protrusion of the lower cover achieve initial alignment, avoiding significant deviations during assembly of the upper and lower covers; the positioning post A of the upper cover and the positioning post B of the lower cover precisely align, forming a deep fixation of the "upper cover-lower cover," preventing gaps from appearing between the upper and lower covers after long-term use; the positioning post B and the positioning through hole below the cross on the antenna spring limit the installation of the antenna spring, while the positioning post C of the lower cover and the cross positioning block further constrain the position of the antenna spring, preventing rotation or displacement of the antenna spring. This multi-level positioning design ensures that each component is always in the preset position, and even in industrial scenarios with frequent vibrations or during movement, no component displacement will occur, providing a solid structural foundation for stable signal transmission and radiation, and completely solving the signal attenuation problem caused by structural loosening in existing antennas.

[0015] 2. In the signal transmission and radiation stage, this utility model achieves a significant improvement in signal performance through structural design optimization. On the one hand, the coaxial cable extends directly into and is tightly connected to the square frame of the antenna spring, minimizing the signal transmission path and reducing signal loss during transmission. Simultaneously, the shielded structure of the coaxial cable isolates external electromagnetic interference, ensuring a pure and noise-free transmitted signal. On the other hand, radiating plates are evenly distributed along the circumference of the upper part of the antenna spring. Through repeated testing and optimization of the number and spacing of these radiating plates, the signal is uniformly radiated across multiple planes such as XOY, XOZ, and YOZ. As clearly seen in the signal strength diagram in the attached figure, there are no obvious signal blind spots, effectively solving the problems of uneven signal radiation and weak local signals in traditional antennas. Whether in multi-room homes, large office spaces, or complex industrial environments, it can achieve comprehensive Wi-Fi signal coverage, improving the user's internet experience.

[0016] 3. This utility model constructs a dual protection system of "buffering + sealing," significantly improving the antenna's durability. The silicone pad between the antenna spring and the upper and lower covers, with its excellent elasticity, can effectively absorb impact force when the antenna is subjected to collisions, vibrations, or drops, preventing deformation or breakage caused by direct hard contact between the antenna spring and the housing, thus protecting the integrity of the core radiating components. The foam between the lower and upper covers tightly seals the gaps between the upper and lower covers, completely isolating moisture, dust, oil, and other impurities from the outside of the antenna, preventing corrosion of internal metal components, avoiding signal failures caused by poor component contact, and significantly reducing the user's replacement frequency and operating costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is the front view of the present invention; Figure 3 for Figure 2 The right view; Figure 4 for Figure 2 Sectional view of AA; Figure 5 for Figure 2 BB section view; Figure 6 for Figure 2 CC section view; Figure 7 for Figure 3 DD section view; Figure 8 This is the XOY plane signal strength diagram of the present invention. Figure 9 This is a YOZ plane signal intensity diagram of the present invention. Figure 10 This is the XOZ plane signal intensity diagram of the present invention. Figure 11 The VSWR diagram of the antenna used in this utility model; Figure 12 This is a circuit diagram showing the antenna connection of this utility model; In the diagram: 1. Top cover; 101. Installation space; 102. Installation groove; 103. Positioning post A; 2. Bottom cover; 201. Limiting protrusion; 202. Installation through hole; 203. Positioning post B; 204. Positioning post C; 205. Cross positioning block; 3. Antenna spring; 301. Positioning through hole; 302. Square frame; 303. Radiating plate; 4. Coaxial cable; 5. Silicone pad; 6. Foam; 7. Bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," 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 application 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.

[0020] 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 application based on the specific circumstances.

[0021] Example 1: Please refer to Figures 1 to 12 A mushroom-shaped antenna includes an upper cover (1), a lower cover (2), an antenna spring (3), and a coaxial cable (4); characterized in that: the upper cover (1) is a straight slot-shaped opening with its outer shape inclined towards the center, and has an installation space (101) with the same shape as the outer shape and in a stepped shape inside, and the lower surface of the installation space (101) has an installation groove (102) along its outline, and the upper surface inside the upper cover (1) has four tubular positioning posts (103) distributed in a positive cross shape; the lower cover (2) is set on the lower surface of the installation space (101), the outer outline of the lower cover (2) matches the lower end of the upper cover (1), and the edge of its upper surface has a limiting protrusion (201) that matches the installation groove (102), and the middle part has an installation through hole. (202), the upper surface of the lower cover (2) is provided with four positioning posts (203) along the cross shape. The top of the positioning posts (203) is stepped and matched with the positioning posts (103). The antenna spring (3) is set in the installation space (101). Its lower part is cross-shaped and has four positioning through holes (301) that match the positioning posts (203). The middle part is a square frame (302) fixed in the lower center. The upper part has several radiating plates (303) evenly distributed along the circumference on the top of the square frame (302). The coaxial line (4) is set below the lower cover (2). One end passes through the center of the installation through hole (202) and extends into the square frame (302) from the lower part of the antenna spring (3).

[0022] The upper cover (1) serves two purposes: firstly, as the external protective shell of the antenna, it provides physical protection for the core components such as the lower cover (2), antenna spring (3), and coaxial cable (4) inside, preventing damage to the components from external collisions, scratches, etc.; secondly, it provides a stable mounting carrier for each component through the installation space (101), ensuring that the components are assembled in the preset position and avoiding signal interference caused by chaotic spatial layout; and thirdly, through the dual positioning structure of the mounting groove (102) and the limiting protrusion (201), positioning post A (103) and positioning post B (203), it achieves precise cooperation with the lower cover, preventing relative displacement of the upper and lower covers, and at the same time assists in the positioning of the antenna spring (3), ensuring that the antenna spring (3) is always in the best signal radiation position and ensuring signal stability. The lower cover (2) serves as the bottom support component of the antenna, providing a stable mounting base for the entire antenna. Through the multiple positioning structures of the limiting protrusion (201), positioning post B (203), positioning post C (204), and cross positioning block (205), it achieves assembly positioning with the upper cover and precise fixing with the antenna spring, preventing component displacement. The mounting through hole (202) in the middle provides an installation position for the bolt (7). The antenna spring (3) serves as the core component for signal radiation. Its core purpose is to achieve signal reception and radiation: receiving the wifi signal transmitted by the coaxial line (4) and transmitting the signal to the upper radiating plate (303) through the properties of its own material. The radiating plate (303) is evenly distributed along the circumference, which can expand the signal coverage range and ensure that the signal strength of each plane is balanced, avoiding signal dead zones. The design of the lower cross shape and positioning through hole (301) allows it to be stably fixed by the positioning post B (203) and other structures, avoiding changes in the signal radiation direction due to position displacement, and ensuring the stability and consistency of signal transmission. The coaxial cable (4) serves as a "transmission bridge" for Wi-Fi signals: one end is connected to the Wi-Fi signal host device (such as a router) to receive the network signals generated by the device; the other end extends into the square frame (302) of the antenna spring (3) to efficiently transmit the signal to the antenna spring (3) and provide a stable signal source for the antenna spring (3).

[0023] A silicone pad (5) is provided between the center of the lower surface of the antenna spring (3) and the lower cover (2). The silicone pad (5) also has a through hole in the middle so that the coaxial line (4) can pass through. The silicone pad (5) is glued to both of them, which not only fixes the antenna spring (3) and the lower cover (2) to prevent the antenna spring (3) from loosening, but also absorbs the impact force between the antenna spring (3) and the lower cover (2) when the antenna is subjected to vibration or collision, avoiding deformation of the antenna spring (3) caused by hard contact.

[0024] A silicone pad (5) is provided between the upper surface of the antenna spring (3) and the upper cover (1). The antenna spring (3) and the upper cover (1) are fixed by adhesive bonding, and the collision force between the antenna spring (3) and the upper cover (2) is buffered at the same time. With the silicone pad (5) mentioned above, the double buffer protection ensures that the antenna spring (3) remains intact during use and ensures the signal radiation performance.

[0025] Foam (6) is provided between the lower surface of the lower cover (2) and the lower surface of the upper cover (1). It is glued between the lower surface of the lower cover (2) and the lower surface of the upper cover (1) to completely seal the gap, prevent external moisture, dust and impurities from entering the interior through the gap, avoid corrosion of internal metal parts (such as antenna springs (3) and coaxial cable (4) connectors), and extend the service life of the antenna; at the same time, the elasticity of the foam (6) can play a buffering role when the upper and lower covers are slightly squeezed, and assist the silicone pad (5) to further protect the internal components and improve the overall protection performance of the antenna; according to actual testing, the protection performance can reach IP6 level.

[0026] The upper surface of the lower cover (2) is also provided with a positioning post C (204) and a cross positioning block (205), both of which are connected to the antenna spring (3). Specifically, as follows Figure 6 As shown, positioning post C (204) is located in front right of the lower cover (2), and cross positioning block (205) is located behind left of the lower cover (2). The lower part of the antenna spring (3) is provided with through holes and notches connected to it. Both are used to assist in assembly positioning, and the height of both does not exceed that of positioning post B (203) to prevent obstacles from being caused to the installation of the antenna spring.

[0027] The mounting through hole (202) is fitted with a bolt (7), which is hollow inside to allow the coaxial cable (4) to pass through. The bolt (7) and nut are used to fix the entire antenna to the Wi-Fi signal host device (such as a router), ensuring that the antenna is stable and does not loosen after installation. The hollow design provides a passage for the coaxial cable (4), allowing the coaxial cable (4) to pass through the bolt from the outside of the antenna and enter the interior to connect with the antenna spring (3), ensuring that the installation and signal transmission functions do not interfere with each other, and improving the practicality and safety of the antenna.

[0028] Working process: First, remove the lower cover (2) of the component and screw the bolt (7) into the mounting through hole (202) in the middle of the lower cover (2). Ensure that the bolt (7) is fully engaged with the inner thread of the mounting through hole and is fixed firmly. At the same time, check whether the hollow channel inside the bolt (7) is unobstructed, so as to reserve a smooth path for the subsequent installation of the coaxial cable (4). Then, apply an appropriate amount of glue evenly to the center of the upper surface of the lower cover (2), take a silicone pad (5), and attach its lower surface to the glue. Precisely attach it to the center of the upper surface of the lower cover (2) to ensure that the silicone pad (5) is aligned with the center of the lower cover (2) to provide a precise buffer and fixing base for the installation of the antenna spring (3).

[0029] Take the antenna spring (3) and observe the position of its lower cross-shaped structure and the four positioning through holes (301). Align the positioning through holes (301) with the four positioning pins (203) distributed along the cross on the upper surface of the lower cover (2). Slowly slide it down so that the positioning pins (203) completely pass through the positioning through holes (301). At this time, the center of the lower surface of the antenna spring (3) is in close contact with the silicone pad (5) on the upper surface of the lower cover (2). Apply glue to the contact point between the lower surface of the antenna spring (3) and the silicone pad (5) to ensure that the two are in close contact. Firmly bond the antenna spring (3) to the lower cover (2) to complete the initial fixation. During this process, it is necessary to ensure that the side of the antenna spring (3) is in close contact with the positioning post C (204) and the cross positioning block (205) on the lower cover (2). Use the two to assist in the assembly and positioning to prevent the antenna spring (3) from rotating or shifting during subsequent assembly or use. Since the height of the positioning post C (204) and the cross positioning block (205) does not exceed the height of the positioning post B (203), they will not hinder the installation of the antenna spring (3) and ensure a smooth assembly process.

[0030] Take the coaxial cable (4), align one end of it with the hollow channel of the bolt (7) from below the lower cover (2), and slowly insert it so that the coaxial cable (4) passes through the bolt (7), the mounting through hole (202) of the lower cover (2) and the gap at the bottom of the antenna spring (3) in sequence, and finally extends into the square frame (302) in the middle of the antenna spring (3); adjust the position of the coaxial cable (4) so ​​that its connector is in close contact with the metal part of the antenna spring in the square frame (302), and fix the two by welding or pressing to ensure that the connection is firm and there is no looseness or poor contact. The transmission channel of the wifi signal from the device to the antenna spring is completed. At this time, it is necessary to check whether the coaxial cable (4) is bent or squeezed to avoid the signal transmission being affected by the damage of the line.

[0031] Take another silicone pad (5), apply glue evenly to its lower surface, and precisely attach it to the center of the upper surface of the antenna spring (3); then apply glue to the corresponding position on the upper surface inside the upper cover (1), and place the upper cover (1) over the lower cover (2) from above, so that the stepped installation space (101) inside the upper cover (1) completely accommodates the lower cover (2), the antenna spring (3), and the upper part of the coaxial line (4); during the covering process, it is necessary to ensure that the mounting groove (102) on the lower surface of the upper cover (1) and the limiting protrusion (201) on the edge of the upper surface of the lower cover (2) are aligned. Precise engagement: The four tubular positioning posts A (103) on the inner upper surface of the upper cover (1) are matched and docked with the top stepped structure of the positioning post B (203) on the lower cover (2); Gently press the upper cover (1) to make the upper cover (1) and the lower cover (2) fit tightly together. At this time, the upper surface of the silicone pad (5) on the upper part of the antenna spring (3) is tightly bonded to the inner upper surface of the upper cover (1). If it is necessary to further enhance the fixing effect, glue can be applied to the gap between the upper and lower covers to complete the assembly of the upper and lower covers and at the same time achieve the buffer fixing of the antenna spring (3) in the vertical direction.

[0032] Take foam (6) and cut it into the corresponding shape and size according to the size of the gap between the lower surface of the lower cover (2) and the lower surface of the upper cover (1). Remove the protective film (if present) from one side of the foam (6) and stick it tightly to the upper and lower cover surfaces at the gap. Ensure that the foam (6) completely covers the gap without any omissions or unsealed areas. Through the sealing effect of the foam (6), prevent external moisture and dust from entering the antenna. The overall assembly of the mushroom head antenna is now complete.

[0033] Move the assembled antenna to the Wi-Fi signal host device (such as a router), align the bolt (7) at the bottom of the antenna with the antenna mounting hole on the device, pass it through the mounting hole, and then put the nut on the other side of the device. Tighten the nut with a tool to make the antenna securely installed on the device, ensuring that there is no looseness between the antenna and the device. The installation angle can be adjusted according to the actual signal requirements. After adjustment, tighten the nut again to fix it. The relevant circuit diagram of the connection between this utility model and the Wi-Fi signal host device is as follows. Figure 12 As shown.

[0034] After the WiFi signal host device is powered on, the network signal generated by the device is first transmitted to the coaxial cable (4). The coaxial cable (4) transmits the pure signal along a preset path to the square frame (302) of the antenna spring (3). After receiving the signal, the antenna spring (3) conducts the signal to the radiating plate (303) evenly distributed along the circumference on the upper part through its own conductivity. The radiating plate (303) radiates the signal to all sides. The signal passes through the upper cover (1) and the lower cover (2) and covers the surrounding space, thereby enhancing and expanding the WiFi signal. During this process, the silicone pad (5) continuously buffers the vibration or collision force between the antenna spring (3) and the upper and lower covers, and the foam (6) continuously seals the gaps. Each positioning structure keeps the component position stable and together ensures that the antenna works stably for a long time, providing users with a high-quality WiFi signal.

[0035] In this embodiment, an OXYZ coordinate system is established, such as... Figure 1 As shown, the signal strength maps of the Wi-Fi signal in the XOY, YOZ, and XOZ planes, measured by relevant equipment, are as follows: Figure 8 , 9 As shown in Figure 10, the VSWR diagram of the antenna of this utility model is as follows. Figure 11 As shown.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mushroom-shaped antenna, comprising an upper cover (1), a lower cover (2), an antenna spring (3), and a coaxial cable (4); characterized in that: The upper cover (1) is a straight groove shaped with its outer shape inclined towards the center. It has an internal installation space (101) that is stepped and has the same shape as the outer surface. The lower surface of the installation space (101) has an installation groove (102) along its outline. The upper surface of the upper cover (1) has four tubular positioning posts (103) arranged in a symmetrical cross pattern. The lower cover (2) is located on the lower surface of the installation space (101). The outer outline of the lower cover (2) matches the lower end of the upper cover (1), and its upper surface edge has a limiting protrusion (201) that matches the installation groove (102). It has an installation through hole (202) in its middle. The upper surface of the lower cover (2) has four... Positioning post B (203) has a stepped top and is matched with positioning post A (103); the antenna spring (3) is set in the installation space (101), its lower part is a cross shape, and it has four positioning through holes (301) that match the positioning post B (203). The middle part is a square frame (302) fixed in the lower center, and the upper part has several radiating plates (303) evenly distributed along the circumference on the top of the square frame (302); the coaxial line (4) is set below the lower cover (2), and one end passes through the center of the installation through hole (202) and extends into the square frame (302) from the lower part of the antenna spring (3).

2. The mushroom-shaped antenna according to claim 1, characterized in that: A silicone pad (5) is provided between the center of the lower surface of the antenna spring (3) and the lower cover (2).

3. The mushroom-shaped antenna according to claim 1, characterized in that: A silicone pad (5) is provided between the upper surface of the antenna spring (3) and the upper cover (1).

4. A mushroom-shaped antenna according to claim 1, characterized in that: Foam (6) is provided between the lower surface of the lower cover (2) and the lower surface of the upper cover (1).

5. A mushroom-shaped antenna according to claim 1, characterized in that: The upper surface of the lower cover (2) is also provided with a positioning post C (204) and a cross positioning block (205), both of which are connected to the antenna spring (3).

6. A mushroom-shaped antenna according to claim 1, characterized in that: The mounting through hole (202) is fitted with a bolt (7), which is hollow inside so that the coaxial line (4) can pass through.

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