Electromagnetic shielding radio frequency coaxial connector

Abstract

The utility model discloses an electromagnetic shielding radio frequency coaxial connector which comprises an external sleeve, the inner wall of the external sleeve is in threaded connection with a threaded plug, the rear end of the threaded plug is provided with a screwing handle, the inner wall of the threaded plug is fixedly connected with an anti-skid ring, the inner wall of the anti-skid ring is connected with a rubber sheet in a pressing mode, a wire core is wrapped in the rubber sheet, and the wire core is connected with the external sleeve in a pressing mode. The outer surface of the outer sleeve is in threaded connection with a replaceable shielding device, the replaceable shielding device comprises a shielding sleeve, a placement groove, a metal block, a fixing ring, a screw and a sealing plug, and through cooperative work of the metal net layer on the inner wall of the outer sleeve and the replaceable shielding device, an all-directional electromagnetic shielding system is formed. The metal net layer reflects and absorbs external electromagnetic waves by means of good electrical conductivity and magnetic conductivity, an all-directional electromagnetic shielding system is formed, different environments are flexibly adapted, and the metal blocks in the replaceable shielding device can be replaced according to the actual electromagnetic environment.

Description

Technical Field

[0001] This utility model relates to the field of electronic communication technology, and in particular to an electromagnetically shielded radio frequency coaxial connector. Background Technology

[0002] In modern electronic devices and communication systems, radio frequency (RF) signals are widely used. However, electromagnetic interference (EMI) is becoming increasingly prominent, seriously affecting the transmission quality of RF signals and the normal operation of equipment. Traditional RF coaxial connectors have many shortcomings in electromagnetic shielding performance and are difficult to effectively resist interference from complex and ever-changing electromagnetic environments. For example, in the magnetic resonance imaging (MRI) area of ​​a hospital, there is strong electromagnetic radiation in the surrounding area. Ordinary connectors cannot ensure stable signal transmission between devices, leading to image data loss or errors. Inside communication base stations, numerous electronic components operate densely, generating a large amount of electromagnetic noise. Conventional connectors are easily affected by this noise, causing communication signal interruption or bit errors. At the same time, as electronic devices develop towards miniaturization and integration, higher requirements are placed on the structural stability and adaptability of connectors. Existing connectors are difficult to flexibly adjust their shielding performance when facing different working scenarios, and their structure is easily damaged in environments such as vibration and movement, resulting in poor signal transmission reliability. Therefore, it is urgent to develop an RF coaxial connector with efficient electromagnetic shielding capabilities, a robust structure, and the ability to adapt to diverse environments. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] Therefore, the purpose of this utility model is to provide an electromagnetically shielded radio frequency coaxial connector that can solve the existing problems of dealing with interference in complex electromagnetic environments and overcoming the easy damage to the equipment structure.

[0005] To solve the above technical problems, this utility model provides an electromagnetically shielded radio frequency coaxial connector, which adopts the following technical solution: it includes an outer sleeve, the inner wall of the outer sleeve is threadedly connected to a threaded plug, the rear end of the threaded plug is provided with a handle, the inner wall of the threaded plug is fixedly connected to an anti-slip ring, the inner wall of the anti-slip ring is pressed with a rubber sheet, the inside of the rubber sheet is wrapped with a wire core, and the outer surface of the outer sleeve is threadedly connected to a replaceable shielding device.

[0006] The replaceable shielding device includes a shielding sleeve, a placement groove, a metal block, a fixing ring, screws, and a sealing plug.

[0007] Optionally, the front end of the outer sleeve is threadedly connected to a protective cover, and the inner wall of the protective cover is fixedly connected to an radio frequency plug.

[0008] The above technical solution involves a threaded connection between the front end of the outer sleeve and the protective cover. The protective cover protects the internal RF plug while ensuring a tight connection between the RF plug and the outer sleeve, thus guaranteeing the integrity of the signal transmission link.

[0009] Optionally, the rear end of the RF plug is provided with a groove, and the inner wall of the groove is in close contact with the wire core.

[0010] The above technical solution ensures that the groove at the rear end of the RF plug makes close contact with the wire core, reducing contact resistance, improving the signal transmission efficiency from the wire core to the RF plug, and ensuring stable and efficient signal transmission.

[0011] Optionally, a limiting ring is fixedly connected to the front surface of the outer sleeve, and the rear surface of the limiting ring is in close contact with the replaceable shielding device.

[0012] Through the above technical solution: the limiting ring on the front surface of the outer sleeve is in close contact with the replaceable shielding device, positioning and limiting the replaceable shielding device, maintaining structural stability, and ensuring that it works effectively in conjunction with other shielding structures.

[0013] Optionally, the placement groove is located at the rear end of the shielding sleeve, and the metal block is placed in the placement groove.

[0014] The above technical solution, with its placement groove at the rear end of the shielding sleeve and the metal block placed within it, creates conditions for flexibly replacing the metal block, adjusting the electromagnetic shielding effect, and adapting to different electromagnetic environments.

[0015] Optionally, the inside of the retaining ring is threadedly connected to the screw, and the outer surface of the screw is threadedly connected to the shielding sleeve.

[0016] The above technical solution, through the threaded connection of the fixing ring, screw and shielding sleeve, firmly fixes the metal block in the slot, ensuring the stability of the electromagnetic shielding structure and enabling the connector to resist external electromagnetic interference.

[0017] Optionally, the front surface of the retaining ring is fixedly connected to the sealing plug, and the outer surface of the sealing plug is in close contact with the side wall of the placement groove.

[0018] The above technical solution improves the sealing performance of the replaceable shielding device and enhances the electromagnetic shielding effect in an electromagnetic environment by connecting the fixing ring and the sealing plug and ensuring close contact between the sealing plug and the side wall of the placement groove.

[0019] Optionally, a first polyvinyl chloride (PVC) insulation layer is fixedly connected to the inner wall of the outer sleeve, a metal mesh layer is fixedly connected to the inner wall of the first PVC insulation layer, and a second PVC insulation layer is fixedly connected to the inner wall of the metal mesh layer.

[0020] The above technical solution involves an insulating layer and a metal mesh layer connected sequentially to the inner wall of the outer sleeve. The metal mesh layer provides electromagnetic shielding, while the insulating layer prevents leakage and ensures the safe and stable operation of the connector.

[0021] In summary, this utility model has at least one of the following beneficial effects:

[0022] 1. Comprehensive shielding protection: The metal mesh layer on the inner wall of the outer sleeve works in conjunction with the replaceable shielding device to form a comprehensive electromagnetic shielding system. With its excellent conductivity and magnetic permeability, the metal mesh layer reflects and absorbs external electromagnetic waves, effectively preventing external interference from penetrating into the connector and interfering with signal transmission. At the same time, it suppresses the radiation of internal radio frequency signals outward, preventing interference with surrounding electronic equipment and creating a clean electromagnetic environment for signal transmission inside the connector. In high electromagnetic environments such as hospitals and communication base stations, it can ensure the stable operation of equipment.

[0023] 2. Flexible adaptation to different environments: The metal blocks in the replaceable shielding device can be replaced according to the actual electromagnetic environment. In areas with strong electromagnetic interference, such as near substations, high permeability metal blocks can be selected to significantly enhance the shielding effect and effectively absorb and reflect high-intensity electromagnetic waves. In environments with relatively simple electromagnetic environments and weak interference, ordinary metal blocks can meet the requirements, ensuring the shielding effect while reducing costs. This achieves flexible and efficient adaptation to different electromagnetic environments and broadens the application scenarios of the connector. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the replaceable shielding device of this utility model;

[0028] Figure 4 This is a schematic diagram of the threaded plug connection of this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. Outer sleeve; 2. Replaceable shielding device; 3. Protective cover; 4. RF plug; 5. Wire core; 6. Rubber sheath; 7. Threaded plug; 8. Tightening handle; 9. First PVC insulation layer; 10. Metal mesh layer; 11. Second PVC insulation layer; 12. Anti-slip ring; 13. Placement groove; 14. Fixing ring; 15. Screw; 16. Metal block; 17. Sealing plug; 18. Limiting ring; 19. Shielding sleeve; 20. Groove. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] Reference Figure 1-4 This utility model discloses an electromagnetically shielded radio frequency coaxial connector, comprising an outer sleeve 1, a threaded plug 7 threadedly connected to the inner wall of the outer sleeve 1, a handle 8 provided at the rear end of the threaded plug 7, an anti-slip ring 12 fixedly connected to the inner wall of the threaded plug 7, a rubber 6 pressed into the inner wall of the anti-slip ring 12, and a wire core 5 wrapped inside the rubber 6, a replaceable shielding device 2 threadedly connected to the outer surface of the outer sleeve 1, a protective cover 3 threadedly connected to the front end of the outer sleeve 1, an radio frequency plug 4 fixedly connected to the inner wall of the protective cover 3, a groove 20 provided at the rear end of the radio frequency plug 4, the inner wall of the groove 20 being in close contact with the wire core 5, a limiting ring 18 fixedly connected to the front surface of the outer sleeve 1, the rear surface of the limiting ring 18 being in close contact with the replaceable shielding device 2, a first polyvinyl chloride insulation layer 9 fixedly connected to the inner wall of the outer sleeve 1, a metal mesh layer 10 fixedly connected to the inner wall of the first polyvinyl chloride insulation layer 9, and a second polyvinyl chloride insulation layer 11 fixedly connected to the inner wall of the metal mesh layer 10.

[0032] The replaceable shielding device 2 includes a shielding sleeve 19, a placement groove 13, a metal block 16, a fixing ring 14, a screw 15, and a sealing plug 17. The placement groove 13 is located at the rear end of the shielding sleeve 19. The metal block 16 is placed in the placement groove 13. The inside of the fixing ring 14 is threadedly connected to the screw 15. The outer surface of the screw 15 is threadedly connected to the shielding sleeve 19. The front surface of the fixing ring 14 is fixedly connected to the sealing plug 17. The outer surface of the sealing plug 17 is in close contact with the side wall of the placement groove 13.

[0033] Working principle: The core component for radio frequency signal transmission is the wire core 5, which is tightly wrapped by the rubber sheath 6. The rubber sheath 6 is pressed against the anti-slip ring 12 on the inner wall of the threaded plug 7, and finally connected to the outer sleeve 1 through the threaded plug 7. When the radio frequency signal is connected, the signal is conducted in the wire core 5. Due to the insulation properties of the rubber sheath 6, it can effectively prevent signal leakage and the influence of external interference on signal transmission, ensuring that the signal is transmitted in a relatively stable environment. The rear end of the radio frequency plug 4 is provided with a groove 20, which fits tightly against the rear end of the wire core 5. This close contact builds a bridge for the signal to be transmitted from the wire core 5 to the radio frequency plug 4, and then transmits the signal to the external device connected to it, completing the radio frequency signal transmission process.

[0034] The inner wall of the outer sleeve 1 is sequentially provided with a first polyvinyl chloride insulation layer 9, a metal mesh layer 10, and a second polyvinyl chloride insulation layer 11. The metal mesh layer 10 plays a key role in electromagnetic shielding. It has good conductivity and magnetic permeability. When external electromagnetic waves encounter the metal mesh layer 10, they will generate induced current on the surface of the metal mesh layer 10. The magnetic field generated by these induced currents will cancel each other with the external interference magnetic field, thereby preventing external electromagnetic waves from penetrating into the connector and interfering with signal transmission.

[0035] The placement slot 13 is located at the rear end of the shielding sleeve 19, and the metal block 16 is placed in it and fixed by the fixing ring 14 and screw 15. The sealing plug 17 on the front surface of the fixing ring 14 is in close contact with the side wall of the placement slot 13 to form a sealing structure. When facing different electromagnetic environments, the shielding performance can be adjusted by replacing the metal block 16 in the placement slot 13. The electromagnetic shielding characteristics of the metal block 16 are different for different materials and specifications. For example, in a strong electromagnetic interference environment, a metal block 16 with high magnetic permeability can be selected to absorb and reflect electromagnetic waves more effectively and enhance the shielding effect. In an environment with relatively low requirements for shielding performance, a metal block 16 made of ordinary metal material can meet the requirements. The metal block 16 and the shielding sleeve 19 work together with the metal mesh layer 10 of the outer sleeve 1 to further improve the overall electromagnetic shielding capability and prevent electromagnetic waves from leaking from all directions or entering the connector.

[0036] The outer sleeve 1 and the threaded plug 7 are connected by a threaded connection, which is simple and stable. The handle 8 at the rear end of the threaded plug 7 makes it easy for operators to tighten or loosen the screws. The anti-slip ring 12 on the inner wall of the threaded plug 7 is tightly pressed against the rubber 6, which increases the friction between the wire core 5 and the threaded plug 7, so that the wire core 5 can remain stable inside the connector and will not affect the stability of signal transmission due to shaking or displacement. The front end of the outer sleeve 1 is threadedly connected to the protective cover 3. The protective cover 3 acts as a protective shell, which can effectively protect the internal RF plug 4 from external impacts and damage, ensuring that the RF plug 4 is always in good working condition. The limiting ring 18 fixedly connected to the front surface of the outer sleeve 1 is in close contact with the replaceable shielding device 2, providing accurate positioning and limiting for the replaceable shielding device 2. During use, the replaceable shielding device 2 will not move axially, ensuring the stability of the entire connector structure, and thus ensuring that the signal transmission and electromagnetic shielding functions can operate stably and normally.

[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. Electromagnetically shielded radio frequency coaxial connector comprising an outer sleeve (1), characterized in that: The inner wall of the outer sleeve (1) is threadedly connected with a threaded plug (7), the rear end of the threaded plug (7) is provided with a handle (8), the inner wall of the threaded plug (7) is fixedly connected with an anti-skid ring (12), the inner wall of the anti-skid ring (12) is crimped with a rubber (6), the inside of the rubber (6) is wrapped with a wire core (5), and the outer surface of the outer sleeve (1) is threadedly connected with a replaceable shielding device (2). The replaceable shielding device (2) comprises a shielding sleeve (19), a placing groove (13), a metal block (16), a fixing ring (14), a screw (15) and a sealing plug (17).

2. An electromagnetic shielded radio frequency coaxial connector as defined in Claim 1, wherein: The front end of the outer sleeve (1) is threadedly connected with a protective cover (3), and the inner wall of the protective cover (3) is fixedly connected with a radio frequency plug (4).

3. An electromagnetic shielded radio frequency coaxial connector as recited in claim 2, wherein: The rear end of the radio frequency plug (4) is provided with a groove (20), and the inner wall of the groove (20) is in close contact with the wire core (5).

4. The electromagnetic shielded radio frequency coaxial connector of Claim 1, wherein: The front surface of the outer sleeve (1) is fixedly connected with a limiting ring (18), and the rear surface of the limiting ring (18) is in close contact with the replaceable shielding device (2).

5. The electromagnetic shielded radio frequency coaxial connector of Claim 1, wherein: The placing groove (13) is located at the rear end of the shielding sleeve (19), and the metal block (16) is placed in the placing groove (13).

6. The electromagnetic shielded radio frequency coaxial connector of Claim 1, wherein: The inside of the fixing ring (14) is threadedly connected with the screw (15), and the outer surface of the screw (15) is threadedly connected with the shielding sleeve (19).

7. The electromagnetic shielded radio frequency coaxial connector of Claim 1, wherein: The front surface of the fixing ring (14) is fixedly connected with the sealing plug (17), and the outer surface of the sealing plug (17) is in close contact with the side wall of the placing groove (13).

8. The electromagnetic shielded radio frequency coaxial connector of Claim 1, wherein: The inner wall of the outer sleeve (1) is fixedly connected with a first polyvinyl chloride insulation layer (9), the inner wall of the first polyvinyl chloride insulation layer (9) is fixedly connected with a metal mesh layer (10), and the inner wall of the metal mesh layer (10) is fixedly connected with a second polyvinyl chloride insulation layer (11).

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