A Beidou navigation antenna cover

Abstract

This utility model relates to the field of radome technology, specifically a Beidou navigation radome, comprising a base plate, a cover shell detachably fixedly mounted on the top of the base plate, and a sealing gasket fixedly mounted on the mating surface of the base plate and the cover shell. The sealing gasket has an arc-shaped cross-section, and the top surface of the base plate has an arc-shaped groove that matches and fits the sealing gasket. The bottom surface of the cover shell has an arc-shaped protrusion that matches and fits the sealing gasket. Through the matching design of the arc-shaped sealing gasket, arc-shaped groove, and arc-shaped protrusion, combined with the characteristics of EPDM rubber or silicone rubber, the sealing performance is significantly improved, effectively preventing rainwater and dust from entering the cover shell and protecting internal components. The base plate and cover shell are fixed using a double fixing method of clips and screws, ensuring a stable connection and solving the problem of cumbersome disassembly and assembly of traditional adhesive joints. This facilitates later maintenance and component replacement, significantly improving the service life and maintenance efficiency of the radome.

Description

Technical Field

[0001] This utility model relates to the field of antenna radome technology, specifically a Beidou navigation antenna radome. Background Technology

[0002] As a crucial space infrastructure, the stability and environmental adaptability of the BeiDou Navigation Satellite System's terminal equipment directly impact service accuracy. Current navigation antennas often suffer signal attenuation due to complex outdoor environments (such as rain and dust erosion). Traditional radomes often employ a single adhesive-bonded sealing structure, which suffers from inconvenient disassembly and maintenance, and a decline in sealing performance over long-term use. Therefore, there is an urgent need to develop a new radome structure that combines efficient sealing with convenient maintenance to meet the reliable application requirements of BeiDou navigation in various scenarios.

[0003] As disclosed in the patent announcement CN222422326U, a Beidou navigation radome structure is presented. In this structure, the opening end face of the radome is laser-cut to form a notch. A metal ring matches the opening end face of the radome, with the outer ring of the metal ring recessed into its bottom edge. The outer ring of the metal ring is located within the notch on the opening end face of the radome, and the outer diameter of the bottom edge of the metal ring is consistent with the outer diameter of the opening end face of the radome. The radome and the metal ring are bonded together with a heat-resistant adhesive. This method involves fixing the metal ring to a steel ring fixture, applying heat-resistant adhesive to the notch on the opening end face of the radome and the flange structure of the outer ring of the metal ring, and bonding the radome to the metal ring. Excess adhesive is extruded under pressure using a pressure fixture, and then cured and shaped by heat. Residual adhesive is cleaned. Weather-resistant PU paint is sprayed onto the surface of the radome to complete the assembly of the radome. This structure and method improve the flatness, appearance consistency, and airtightness of the radome mounting surface, ensure the uniformity of the radome thickness, reduce the radome's wave transmission loss, improve manufacturing efficiency, and reduce labor intensity.

[0004] While the aforementioned solution overcomes the shortcomings of traditional methods that sacrifice the wave transmission performance of the BeiDou navigation radome for reinforcement through hand lay-up in exchange for achieving flatness of the mounting surface, consistency of paint appearance, and overall airtightness, the radome structure still suffers from drawbacks in practical use. Because it uses adhesive bonding to ensure the integrity and sealing of the radome, disassembly and maintenance of components inside the radome require breaking down the radome, increasing resource consumption. Furthermore, this adhesive bonding method is prone to material aging under extreme environmental conditions, affecting performance. Therefore, we propose a BeiDou navigation radome that solves the problem of inconvenient disassembly and maintenance, improves the ease of use and practicality of the radome, and also increases the utilization rate of materials. Utility Model Content

[0005] The purpose of this invention is to provide a Beidou navigation antenna radome to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A Beidou navigation antenna cover includes a base plate, a cover is detachably and fixedly installed on the top of the base plate, a sealing gasket is fixedly installed on the joint surface between the base plate and the cover, the sealing gasket has an arc-shaped cross-section, an arc-shaped groove matching and fitting the sealing gasket is opened on the top surface of the base plate, and an arc-shaped protrusion matching and fitting the sealing gasket is fixedly provided on the bottom surface of the cover.

[0008] As a further improvement of this utility model: threaded grooves are provided in the middle of both sides of the upper end of the base plate, and threaded holes corresponding to the threaded grooves are provided through both sides of the cover. Fixing screws are provided for the threaded grooves and threaded holes.

[0009] As a further improvement of this utility model: a number of locking strips are fixedly provided on the outer side of the upper end of the base plate, and at least two are evenly provided on each side; a slot is provided on the inner wall of the lower end of the cover to match and engage with the locking strips.

[0010] As a further improvement of this utility model: a reserved wire hole is provided in the middle of the bottom surface of the base plate. The base plate is made of glass fiber polyamide material, and a rubber pad is fixedly attached to its bottom surface by hot melt adhesive. A positioning support frame is fixedly installed at the top of the inner cavity of the cover. A signal receiving module is installed at the lower end of the positioning support frame. The bottom of the signal receiving module is electrically connected to the Beidou navigation module through a wire.

[0011] As a further improvement of this utility model: the outer contour of the base plate is a trapezoidal structure, the thickness of the cover at the narrow side near the base plate is less than the thickness at the other end, the back of the cover adopts an integrated design without corners, the cover is made of polycarbonate or carbon fiber, and auxiliary disassembly grooves are provided on both sides of the cover.

[0012] As a further improvement of this utility model: the sealing gasket is made of EPDM rubber or silicone rubber, the surface of the fixing screw is coated with zinc-rich epoxy coating, and the surface of the cover is coated with siloxane-modified acrylic coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This Beidou navigation antenna cover, through the matching design of arc-shaped sealing gaskets, arc-shaped grooves, and arc-shaped protrusions, combined with the characteristics of EPDM rubber or silicone rubber, greatly improves the sealing performance, effectively preventing rainwater and dust from entering the cover and protecting the internal components.

[0015] 2. This Beidou navigation antenna cover uses a double fixing method of clips and screws to fix the base plate and the cover, which not only ensures a stable connection, but also solves the problem of cumbersome disassembly and assembly of traditional glue-bonded antennas. This facilitates later maintenance and component replacement, and significantly improves the service life and maintenance efficiency of the antenna cover.

[0016] 3. This Beidou navigation antenna radome, through the cornerless integrated design of the top surface of the radome, combined with the surface siloxane modified acrylic coating, can reduce wind resistance while ensuring structural strength, thereby reducing signal interference and loss. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a Beidou navigation antenna radome;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of a Beidou navigation antenna radome;

[0019] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a Beidou navigation antenna radome;

[0020] Figure 4 This is a schematic diagram of the arc-shaped groove and sealing gasket structure of a Beidou navigation antenna radome.

[0021] In the diagram: 1. Base plate; 2. Cover; 3. Sealing gasket; 4. Fixing screw; 5. Clip; 6. Slot; 7. Rubber pad; 8. Positioning support frame; 9. Signal receiving module; 10. Wire; 11. Auxiliary disassembly slot; 12. Arc-shaped slot; 13. Threaded slot; 14. Threaded hole; 15. Reserved wire hole; 16. Arc-shaped protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0024] Example: A Beidou navigation antenna radome, such as Figures 1-4 As shown, the device includes a base plate 1, a cover 2 detachably fixedly installed on the top of the base plate 1, a sealing gasket 3 fixedly installed on the joint surface of the base plate 1 and the cover 2, the sealing gasket 3 being made of EPDM rubber or silicone rubber, the sealing gasket 3 having an arc-shaped cross-section, an arc-shaped groove 12 matching and fitting the sealing gasket 3 on the top surface of the base plate 1, an arc-shaped protrusion 16 matching and fitting the sealing gasket 3 fixedly installed on the bottom surface of the cover 2, several locking strips 5 fixedly installed on the upper outer side of the base plate 1, with no less than two evenly arranged on each side, a locking groove 6 matching and fitting the locking strips 5 on the lower inner wall of the cover 2, the outer contour of the base plate 1 having a trapezoidal structure, the thickness of the cover 2 near the narrow side of the base plate 1 being less than the thickness of the other end, the back of the cover 2 adopting a cornerless integrated design, the cover 2 being made of polycarbonate or carbon fiber, the surface of the cover 2 being sprayed with siloxane modified acrylic coating, and auxiliary disassembly grooves 11 being opened on both sides of the cover 2.

[0025] In this embodiment, by embedding the arc-shaped portion of the sealing gasket 3 into the arc-shaped groove 12, the sealing gasket 3 is made to fit against the top surface of the base plate 1. Then, the arc-shaped protrusion 16 on the bottom surface of the cover 2 is aligned with the arc-shaped groove of the sealing gasket 3. After that, the cover 2 is pressed down, so that the locking strip 5 and the locking groove 6 engage with each other, achieving a snap-fit ​​connection between the cover 2 and the base plate 1. The auxiliary disassembly and assembly grooves 11 on both sides of the cover 2 provide a leverage point for the staff when disassembling and assembling the antenna cover, thereby improving maintenance efficiency.

[0026] like Figures 1-2 As shown, threaded grooves 13 are provided in the middle of both sides of the upper end of the base plate 1, and threaded holes 14 corresponding to the threaded grooves 13 are provided through both sides of the cover 2. The threaded grooves 13 and the threaded holes 14 are equipped with fixing screws 4. When the fixing screws 4 are screwed into the threaded holes 14, a matching anti-seepage rubber washer is provided on the outside. The surface of the fixing screws 4 is sprayed with zinc-rich epoxy coating.

[0027] In this embodiment, the housing 2 and the base 1 can be connected and fixed by the matching arrangement of the fixing screw 4, the threaded groove 13 and the threaded hole 14, so as to prevent the housing 2 from loosening or falling off in harsh environments and improve the stability of the antenna radome.

[0028] like Figures 1-3 As shown, a reserved wire hole 15 is provided in the middle of the bottom surface of the base plate 1. The base plate 1 is made of glass fiber polyamide. A rubber pad 7 is fixedly attached to its bottom surface by hot melt adhesive. A positioning support frame 8 is fixedly installed at the top of the inner cavity of the cover 2. A signal receiving module 9 is installed at the lower end of the positioning support frame 8. The bottom of the signal receiving module 9 is electrically connected to the Beidou navigation module through a wire 10.

[0029] In this embodiment, the positioning support frame 8 and the reserved wire hole 15 make it convenient for the staff to fix the signal receiving module 9 inside the housing 2. The rubber pad 7 set on the bottom surface of the base plate 1 plays a protective role for the antenna cover and the surface of the equipment, preventing the antenna cover base plate 1 from causing wear or scratches to the surface of the equipment during installation.

[0030] In this embodiment, a Beidou navigation antenna radome is used by first fixing the signal receiving module 9 to the positioning support frame 8 at the top of the inner cavity of the radome 2 with screws, and then passing the bottom end of the wire 10 through the reserved wire hole 15. Next, the arc-shaped part of the sealing gasket 3 is embedded into the arc-shaped groove 12, so that the sealing gasket 3 fits against the top surface of the base plate 1. Then, the arc-shaped protrusion 16 on the bottom surface of the radome 2 is aligned with the arc-shaped groove of the sealing gasket 3. Afterward, the radome 2 is pressed down, causing the locking strip 5 and the locking groove 6 to engage, achieving a snap-fit ​​connection between the radome 2 and the base plate 1. Finally, the fixing bolts are screwed into the threaded holes 14 and threaded grooves 13 to complete the assembly of the Beidou navigation antenna radome. This antenna radome uses a snap-fit ​​connection combined with screw fixing to assemble and fix the radome 2 and the base plate 1, ensuring connection stability and improving assembly and disassembly efficiency. At the same time, the sealing gasket 3 enhances the overall sealing performance of the antenna radome, effectively preventing the intrusion of external dust and moisture, thereby extending the antenna's service life. Compared to conventional glued assembly methods, this design is not only simpler to operate but also facilitates later maintenance or replacement of internal components. The structure is rationally designed, highly practical, and suitable for the stable operation requirements of the BeiDou Navigation Satellite System in various scenarios.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A Beidou navigation antenna radome, comprising a base plate (1), characterized in that: The top of the base plate (1) is detachably fixedly installed with a cover (2), and a sealing gasket (3) is fixedly installed on the joint surface of the base plate (1) and the cover (2). The sealing gasket (3) has an arc-shaped cross-section. The top surface of the base plate (1) is provided with an arc-shaped groove (12) that matches and fits the sealing gasket (3). The bottom surface of the cover (2) is fixedly provided with an arc-shaped protrusion (16) that matches and fits the sealing gasket (3). The base plate (1) has threaded grooves (13) in the middle of both sides at the upper end, and the cover (2) has threaded holes (14) that correspond one-to-one with the threaded grooves (13) on both sides. The threaded grooves (13) and threaded holes (14) are equipped with fixing screws (4).

2. The Beidou navigation antenna radome according to claim 1, characterized in that: The base plate (1) has several locking strips (5) fixedly arranged on the outer side of the upper end, and there are no less than two evenly arranged on each side. The inner wall of the lower end of the cover (2) has a slot (6) that matches and engages with the locking strips (5).

3. A Beidou navigation antenna radome according to claim 2, characterized in that: The base plate (1) has a reserved wire hole (15) in the middle of the inner bottom surface. The base plate (1) is made of glass fiber polyamide and a rubber pad (7) is fixedly attached to its bottom surface by hot melt adhesive.

4. A Beidou navigation antenna radome according to claim 2, characterized in that: A positioning support frame (8) is fixedly installed at the top of the inner cavity of the cover (2). A signal receiving module (9) is installed at the lower end of the positioning support frame (8). The bottom of the signal receiving module (9) is electrically connected to the Beidou navigation module through a wire (10).

5. A Beidou navigation antenna radome according to claim 1, characterized in that: The outer contour of the base plate (1) is a trapezoidal structure. The thickness of the cover (2) at one end near the narrow side of the base plate (1) is less than the thickness at the other end. The back of the cover (2) adopts an integrated design without corners.

6. A Beidou navigation antenna radome according to claim 5, characterized in that: The cover (2) is made of polycarbonate or carbon fiber, and auxiliary disassembly grooves (11) are provided on both sides of the cover (2).

7. A Beidou navigation antenna radome according to claim 1, characterized in that: The sealing gasket (3) is made of EPDM rubber or silicone rubber, and the surface of the fixing screw (4) is coated with zinc-rich epoxy coating.

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