Grounding fastener for antennas, shark fin antenna and vehicle

Abstract

The utility model discloses a kind of ground fastener for antenna, shark fin antenna and vehicle.The fastener includes first component, with enclosed bottom wall of through-hole, through-hole is along axial and penetrates first component;Second component includes main body part and the cooperation part formed by extending from main body part, the radial section of cooperation part is less than the radial section of main body part, cooperation part is penetrated into first component from through-hole, and at least a part of cooperation part penetrated into first component is overturned to form overturning part and abuts to the inner side wall of first component, main body part abuts to the outer side wall of first component, overturning part and main body part clamp first component to limit the relative movement of first component and second component.The utility model is used to improve the installation reliability and stability of fastener, and save material cost and assembly cost, increase the strength of fastener.

Description

Technical Field

[0001] This utility model relates to the field of automotive antenna accessories technology, and in particular to a grounding fastener for an antenna, a shark fin antenna, and a vehicle. Background Technology

[0002] As a common external antenna, the fixation and grounding performance of shark fin antennas are crucial. Currently, the fasteners for fixing shark fin antennas typically consist of three independent components: a stop-type slide, a retaining ring, and a nut, which must be assembled manually.

[0003] However, the three independent components result in higher material costs. Secondly, manual assembly is inefficient and prone to problems such as missing or incorrectly installed snap rings or improper assembly. This not only affects assembly efficiency but can also lead to loose antennas or poor grounding, seriously affecting the reliability of the connection and the stability of communication performance. Summary of the Invention

[0004] The purpose of this invention is to provide a grounding fastener for antennas, a shark fin antenna, and a vehicle, which improves the installation reliability and stability of the fastener, saves material and assembly costs, and increases the strength of the fastener.

[0005] The objective of this utility model is achieved through the following technical solution: A grounding fastener for an antenna, comprising: The first component has a bottom wall that encloses and forms a through hole, the through hole extending through the first component axially; The second component includes a main body and a mating portion extending outward from the main body. The radial cross-section of the mating portion is smaller than that of the main body. The mating portion passes through the through hole into the first component, and at least a portion of the mating portion passing through the first component is flipped outward to form a flipped portion and abuts against the inner sidewall of the first component. The main body abuts against the outer sidewall of the first component. The flipped portion and the main body clamp the first component to restrict the relative movement of the first component and the second component.

[0006] Preferably, the mating part and the bottom wall are integrally fixed by stamping; And / or, the mating part is riveted together with the bottom wall.

[0007] Preferably, the bottom wall is provided with an outer wall integrally formed therewith and extending outward, and the outer wall and the bottom wall have an inverted cap-shaped structure; The corner where the inner surface of the bottom wall connects to the wall of the through hole is rounded, and the bottom wall and the mating part form an interference fit.

[0008] Preferably, the outer wall is provided with multiple claws, which protrude outward and can press against the roof surface to achieve the antenna grounding function.

[0009] Preferably, the flipping part includes a vertical section and a horizontal section, the vertical section and the horizontal section form a hook-shaped structure, and the hook-shaped structure and the main body form an engaging space for secure connection with the bottom wall.

[0010] Preferably, the vertical segment includes an inner lower edge wall and an outer lower edge wall, and the inner lower edge wall and the outer lower edge wall are parallel to each other; The horizontal segment includes an inner upper edge wall and an outer upper edge wall, and the inner upper edge wall and the outer upper edge wall are parallel to each other. The inner upper edge wall and the inner lower edge wall are perpendicular to each other, and the outer upper edge wall and the outer lower edge wall are perpendicular to each other.

[0011] Preferably, an inner arc-shaped surface is formed between the inner upper edge wall and the inner lower edge wall, and an outer arc-shaped surface is formed between the outer upper edge wall and the outer lower edge wall; the inner arc-shaped surface is interference-fitted with the rounded corner of the bottom wall, and the inner surface of the inner upper edge wall is tightly fitted with the inner surface of the bottom wall.

[0012] Preferably, the shape of the through hole is adapted to the shape of the edge portion, and the shape of the through hole is one of a circle, a polygon, or an ellipse; And / or, the height of the mating part is 3mm and the folding amount is 1.5mm.

[0013] Preferably, a platform for placing the bottom wall is formed between the main body and the mating part of the second component, and the surface of the platform is in close contact with the outer surface of the bottom wall; The second component has a threaded hole in the middle of its main body along the axial direction. The threaded hole is used to connect to external components, and both ends of the threaded hole are chamfered.

[0014] A shark fin antenna includes: a shark fin base and a fastener as described above, the fastener being threadedly connected to a bolt on the shark fin base, and the bottom surface of the fastener being flush with the bottom surface of the bolt, so as to fix the shark fin antenna to the roof of a vehicle.

[0015] A vehicle comprising: a shark fin antenna as described above.

[0016] Compared with the prior art, the beneficial effects of this utility model include at least the following: By stamping or riveting the second component, its flipped part clamps the first component with the main body, preventing the first component from moving relative to the main body. This also allows the first and second components to be combined into an integrated structure, making the installation of the first and second components easier, improving assembly efficiency, saving material and assembly costs, and enhancing the overall strength and reliability of the fasteners. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance structure of the first and second components assembled according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the appearance structure of the first and second components in the separated state according to an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the first and second components in their unprocessed state according to an embodiment of the present invention. Figure 4 This is a schematic cross-sectional view of the first and second components after assembly, according to an embodiment of the present invention, before further processing. Figure 5 This is a cross-sectional view of the first and second components after processing and forming according to an embodiment of the present utility model; Figure 6 This is a cross-sectional view of the first and second components after they have been processed and formed according to an embodiment of the present utility model. Figure 7 This is a schematic diagram of the shark fin antenna and fastener separated in an embodiment of the present invention.

[0018] Figure 8 This is a schematic diagram of the shark fin antenna and fastener assembly according to an embodiment of the present invention, with the fastener in zero-contact contact with the roof.

[0019] In the diagram: 100, First component; 11, Through hole; 111, Hole wall; 12, Bottom wall; 121, Outer surface; 122, Inner surface; 123, Rounded corner; 13, Outer wall; 14, Claw; 15, Inner side wall; 16, Outer side wall; 200, Second component; 21, Main body; 211, Platform; 212, Threaded hole; 2121, Chamfer; 22, Mating part; 221, Flipping part; 2211, Horizontal section; 2211a, Outer upper edge wall; 2211b, Inner upper edge wall; 223, Outer arc surface; 2212, Vertical section; 2212a, Outer lower edge wall; 2212b, Inner lower edge wall; 222, Inner arc surface; 23, Engaging space; 300, Shark fin base; 31, Bolt; 400, Roof. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0021] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0022] like Figures 1 to 6 As shown, this utility model provides a grounding fastener for antennas, including a first component 100 and a second component 200. The first component 100 and the second component 200 are combined into an integrated fixed structure by machining. That is, after machining, the first component 100 and the second component 200 are fixedly connected, and the first component 100 and the second component 200 are inseparable or difficult to separate. The integrated fixed structure formed by combining the first component 100 and the second component 200 by machining saves material costs and also has high strength and stability, making it suitable for applications such as vehicle-mounted antennas that require reliable grounding and vibration resistance.

[0023] Among them, such as Figure 2 and 3 As shown, the first component 100 is a stop-type slide, made of a metal material such as stainless steel, aluminum alloy, galvanized steel, or carbon steel, which has good electrical conductivity and mechanical strength. This component is usually formed by stamping thin steel sheet, which is efficient and cost-controllable. The first component 100 has a bottom wall 12 that encloses a through hole 11, which penetrates the first component 100 along its axial direction, i.e., it is arranged along the axial direction of the bottom wall 12. Specifically, the through hole 11 penetrates the bottom wall 12 and communicates with the cavity enclosed by the outer wall 13 of the first component 100.

[0024] Specifically, the shape of the through hole 11 is adapted to the mating part 22 of the second component 200. Its shape can be selected from various shapes such as circle, polygon or ellipse to adapt to different installation requirements and usage conditions. Preferably, in this embodiment, the through hole 11 is circular to simplify processing and assembly.

[0025] An outer wall 13 integrally formed with and extending outward is provided on the bottom wall 12. The outer wall 13 and the bottom wall 12 together form an inverted cap-shaped structure. This structure enhances the rigidity and load-bearing capacity of the first component 100. The corner where the inner surface 122 of the bottom wall 12 connects to the hole wall 111 of the through hole 11 is set as a rounded corner 123 to reduce stress concentration and facilitate interference fit with the second component 200. The interference is preferably controlled to be 0.5 mm to 1.5 mm, for example 1 mm, to ensure tightness of connection.

[0026] In some embodiments, the corner where the outer surface 121 of the bottom wall 12 connects to the hole wall 111 of the through hole 11 is set as a rounded corner. This rounded corner also forms an interference fit with the second component 200, and its working principle is similar to that of the aforementioned rounded corner 123.

[0027] In some embodiments, the corners where the inner surface 122 and the outer surface 121 of the bottom wall 12 connect to the hole wall 111 of the through hole 11 are both rounded. These two rounded corners also form an interference fit with the second component 200, and their working principle is similar to that of the aforementioned rounded corner 123.

[0028] In addition, the outer wall 13 is provided with a plurality of claws 14, which protrude outward and can press firmly into contact with the surface of the roof 400. The number of claws 14 is preferably 40 to 60, for example 50, evenly distributed around the circumference of the outer wall 13 to ensure the grounding performance of the antenna. However, the number of claws 14 is not limited to the aforementioned range. The shape of the claws 14 can be serrated or protruding to increase the friction with the surface of the roof 400, improve the bonding strength and stability between the first component 100 and the roof 400, ensure stable contact between the first component 100 and the roof 400, and thus ensure the grounding effect of the antenna.

[0029] The second component 200 is a nut, also made of metal, preferably the same material as the first component 100, to ensure electrochemical compatibility. The second component 200 includes a main body 21 and a mating portion 22 extending outward from the main body 21. The radial cross-section of the mating portion 22 is smaller than that of the main body 21. The mating portion 22 with the smaller radial cross-section can be inserted into the through hole 11 of the first component 100, while the main body 21 with the larger radial cross-section cannot be inserted into the through hole 11 and abuts against the bottom wall 12 of the first component 100. The height of the mating portion 22 is preferably 3 mm, but can be adjusted as needed, for example, from 2 mm to 5 mm.

[0030] like Figure 4 and 5As shown, the mating part 22 penetrates into the first component 100 through the through hole 11, and at least a portion of the mating part 22 penetrating into the first component 100 is flipped outward to form a flipped part 221. The flipped part 221 abuts against the inner sidewall 15 of the first component 100, specifically against the inner surface 122 of the bottom wall 12, while the main body part 21 abuts against the outer sidewall 16 of the first component 100, specifically against the outer surface 121 of the bottom wall 12. This allows the flipped part 221 and the main body part 21 to clamp the first component 100, restricting the relative movement of the first component 100 and the second component 200, improving the firm connection between the first component 100 and the second component 200, and preventing loosening.

[0031] Among them, such as Figure 6 As shown, the flipping part 221 includes a vertical section 2212 and a horizontal section 2211, which form a hook-like structure. The hook-like structure and the main body 21 form an engaging space 23 for accommodating the bottom wall 12 of the first component 100. Specifically, the vertical section 2212 includes an inner lower edge wall 2212b and an outer lower edge wall 2212a that are parallel to each other; the horizontal section 2211 includes an inner upper edge wall 2211b and an outer upper edge wall 2211a that are parallel to each other. The inner upper edge wall 2211b and the inner lower edge wall 2212b are arranged perpendicularly, and the outer upper edge wall 2211a and the outer lower edge wall 2212a are also perpendicular to each other. This structure enhances the overall strength of the flipping part 221.

[0032] Furthermore, an inner arcuate surface 222 is formed between the inner upper edge wall 2211b and the inner lower edge wall 2212b, and an outer arcuate surface 223 is formed between the outer upper edge wall 2211a and the outer lower edge wall 2212a. The inner arcuate surface 222 is interference-fitted with the fillet 123 of the bottom wall 12 to provide a tight connection. At the same time, the inner upper edge wall 2211b is in close contact with the inner surface 122 of the bottom wall 12 to ensure mechanical stability and electrical contact. The outer arcuate surface 223 is used to guide the flipping process, reduce wear, or to guide the installation with external components.

[0033] A platform 211 is formed between the main body 21 and the mating part 22 of the second component 200, and the platform 211 is used to place the bottom wall 12 of the first component 100. The surface of the platform 211 is in close contact with the outer surface 121 of the bottom wall 12 to distribute stress and improve load-bearing capacity. A threaded hole 212 is provided in the middle of the main body 21 along the axial direction for connecting external components, such as antenna modules or bolts 31. Chamfers 2121 are provided at both ends of the threaded hole 212 to facilitate threaded connection and reduce stress concentration.

[0034] In this embodiment, the first component 100 and the second component 200 can be fixed together by stamping or riveting. During the stamping process, after the mating part 22 is inserted into the through hole 11, the end of the mating part 22 is folded over by a stamping tool to form a flipped part 221, and pressure is applied to make the rounded corner 123 and the flipped part 221 have an interference fit. The stamping tool here can be a 60t hydraulic press.

[0035] During the riveting process, a riveting machine is used to rotate and pressurize the mating part 22, achieving localized plastic deformation and locking. Both of these processing methods ensure the reliability and consistency of the connection between the first component 100 and the second component 200.

[0036] like Figure 7 and 8 As shown, this embodiment provides a shark fin antenna including a shark fin base 300 and the aforementioned antenna grounding fastener. The fastener is threadedly connected to a bolt 31 on the shark fin base 300 via a threaded hole 212. The size of the bolt 31 matches the threaded hole 212, for example, an M14*0.75mm bolt 31. During assembly, the bottom surface of the fastener is flush with the bottom surface of the bolt 31 to avoid protruding parts affecting installation. The shark fin antenna is pressed into contact with the surface of the vehicle roof 400 by the fastener's claws 14, achieving antenna grounding. Simultaneously, the reliability of the fastener ensures the antenna remains stable during vehicle operation, preventing vibration and loosening, and avoiding interference with electrical contact.

[0037] This embodiment provides a vehicle including the aforementioned shark fin antenna. The vehicle roof 400 is made of a metal plate, and the shark fin antenna is mounted to a predetermined position on the roof 400 by fasteners. The claw 14 forms an electrical connection with the surface of the roof 400, providing a grounding path for the antenna and improving signal quality. While the vehicle is in motion, the antenna structure can withstand environmental factors such as wind resistance or vibration to maintain long-term reliability.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A grounding fastener for an antenna, characterized in that, include: The first component has a bottom wall that encloses and forms a through hole, the through hole extending through the first component axially; The second component includes a main body and a mating portion extending outward from the main body. The radial cross-section of the mating portion is smaller than that of the main body. The mating portion passes through the through hole into the first component, and at least a portion of the mating portion passing through the first component is flipped outward to form a flipped portion and abuts against the inner sidewall of the first component. The main body abuts against the outer sidewall of the first component. The flipped portion and the main body clamp the first component to restrict the relative movement of the first component and the second component.

2. The grounding fastener for an antenna according to claim 1, characterized in that: The mating part and the bottom wall are integrally fixed by stamping; And / or, the mating part is riveted together with the bottom wall.

3. The grounding fastener for an antenna according to claim 1, characterized in that: The bottom wall is provided with an outer wall integrally formed therewith and extending outward, and the outer wall and the bottom wall have an inverted cap-shaped structure; The corner where the inner surface of the bottom wall connects to the wall of the through hole is rounded, and the bottom wall and the mating part form an interference fit.

4. The grounding fastener for an antenna according to claim 3, characterized in that: The outer wall is provided with multiple claws, which protrude outward and can press against the roof surface to achieve the antenna grounding function.

5. The grounding fastener for an antenna according to claim 1, characterized in that: The flipping part includes a vertical section and a horizontal section. The vertical section and the horizontal section form a hook-like structure, and the hook-like structure and the main body form an engaging space for secure connection with the bottom wall.

6. The grounding fastener for an antenna according to claim 5, characterized in that: The vertical segment includes an inner lower edge wall and an outer lower edge wall, and the inner lower edge wall and the outer lower edge wall are parallel to each other; The horizontal segment includes an inner upper edge wall and an outer upper edge wall, and the inner upper edge wall and the outer upper edge wall are parallel to each other. The inner upper edge wall and the inner lower edge wall are perpendicular to each other, and the outer upper edge wall and the outer lower edge wall are perpendicular to each other.

7. The grounding fastener for an antenna according to claim 6, characterized in that: An inner arc-shaped surface is formed between the inner upper edge wall and the inner lower edge wall, and an outer arc-shaped surface is formed between the outer upper edge wall and the outer lower edge wall; the inner arc-shaped surface is interference-fitted with the rounded corner of the bottom wall, and the inner upper edge wall is in close contact with the inner surface of the bottom wall.

8. The grounding fastener for an antenna according to claim 1, characterized in that: The shape of the through hole is adapted to the shape of the edge portion, and the shape of the through hole is one of a circle, a polygon, or an ellipse; And / or, the height of the mating part is 3mm and the folding amount is 1.5mm.

9. The grounding fastener for an antenna according to claim 1, characterized in that: A platform is formed between the main body and the mating part of the second component for placing the bottom wall, and the surface of the platform is in close contact with the outer surface of the bottom wall; The second component has a threaded hole in the middle of its main body along the axial direction. The threaded hole is used to connect to external components, and both ends of the threaded hole are chamfered.

10. A shark fin antenna, characterized in that, include: The shark fin base and the fastener as described in any one of claims 1 to 9, wherein the fastener is threadedly connected to a bolt on the shark fin base, and the bottom surface of the fastener is flush with the bottom surface of the bolt, so as to fix the shark fin antenna to the roof of the vehicle.

11. A vehicle, characterized in that, include: The shark fin antenna as described in claim 10.

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