Salt mist resistant radio frequency coaxial connector

Abstract

The utility model discloses a kind of salt fog-resistant radio frequency coaxial connectors, including shell assembly, inner conductor assembly and insulating support assembly, shell assembly is cylindrical structure, shell assembly front end is provided with plugging plate, plugging plate center is provided with through-hole, shell assembly rear end is provided with outer thread and rear internal thread, shell assembly outer peripheral wall is also provided with annular groove, outer sealing ring is provided in annular groove, plugging plate front side is provided with connecting rim, connecting rim inside is provided with front internal thread, inner conductor assembly is coaxially arranged in shell assembly, and inner conductor assembly front end penetrates out through-hole, inner conductor assembly is provided with inner sealing ring, and inner sealing ring is used to seal through-hole. By the outer thread and external equipment or connector screw connection of being set, at this time, outer sealing ring is located between external equipment or connector and shell assembly, the gap between shell assembly and external equipment or connector is sealed, effectively prevent salt fog, water vapor and other corrosive medium into interior.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a salt spray resistant radio frequency coaxial connector. Background Technology

[0002] As a key component in radio frequency transmission systems, RF coaxial connectors are widely used in communications, radar, electronic equipment, and other fields. However, in high-salt-spray environments such as coastal areas, offshore operations, and saline chemical plants, the corrosion resistance and reliability of traditional RF coaxial connectors face severe challenges.

[0003] Existing salt spray resistant RF coaxial connectors have significant flaws in their sealing structure design. Most products use only a single O-ring to seal the connector housing interface. Under long-term salt spray corrosion, this sealing method is prone to aging and cracking of the O-ring, leading to seal failure.

[0004] Furthermore, existing RF coaxial connectors use a single-layer metal shield for electromagnetic shielding. Since the connection between the shield and the shell is mostly a simple snap-fit ​​or crimping method, in a salt spray environment, the connection is prone to oxide layer formation due to metal corrosion, which leads to increased contact resistance and reduced shielding effectiveness. At the same time, the single-layer shielding design is difficult to shield the complex internal electromagnetic environment in all directions, which can easily cause signal leakage and external electromagnetic interference.

[0005] In view of this, the present invention is proposed to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a salt spray resistant radio frequency coaxial connector to solve the technical problem of poor sealing and shielding effects in existing salt spray resistant radio frequency coaxial connectors.

[0007] The technical solution of this utility model is: a salt spray resistant radio frequency coaxial connector, comprising:

[0008] The outer shell assembly is a cylindrical structure. A sealing plate is provided at the front end of the outer shell assembly, and a through hole is provided at the center of the sealing plate. The rear end of the outer shell assembly is provided with external thread and rear internal thread. An annular groove is also provided on the outer peripheral wall of the outer shell assembly. An external sealing ring is provided in the annular groove. A connecting edge is provided on the front side of the sealing plate, and a front internal thread is provided on the inner side of the connecting edge.

[0009] The inner conductor assembly is coaxially disposed inside the outer shell assembly, and the front end of the inner conductor assembly extends through a through hole. An inner sealing ring is fitted on the inner conductor assembly to seal the through hole.

[0010] An insulating support assembly is detachably fitted onto the inner conductor assembly, with the outer wall of the insulating support assembly abutting against the inner wall of the outer shell assembly.

[0011] Furthermore, the inner conductor assembly includes a welding section, a signal transmission section, and a connection transition section that are fixedly connected from right to left;

[0012] Welding section to cable;

[0013] The connection transition section connects to the inner conductor of an external device or connector, and the diameter of the connection transition section decreases from right to left.

[0014] Furthermore, a limiting slot is formed on the inner side of the housing assembly along its length;

[0015] The insulating support assembly has a protrusion along its length, and the insulating support assembly is limited within the limiting groove by the protrusion;

[0016] The insulating support assembly includes a front support, a middle support, and a rear support that are snapped together from right to left.

[0017] The front support is fitted onto the welded section;

[0018] The central support unit is mounted on the signal transmission section;

[0019] The rear support is mounted on the connecting transition section.

[0020] Furthermore, a removable metal shielding mesh is also provided inside the outer casing assembly;

[0021] The metal shielding mesh is attached to the rear support surface.

[0022] A movable shielding cover is provided on the outside of the metal shielding mesh, and the shielding cover is screwed onto the rear internal thread.

[0023] Furthermore, the outer casing assembly is also equipped with anti-slip knurled rings.

[0024] Furthermore, the surfaces of the welding section, signal transmission section, and connection transition section are all plated with a conductive gold layer.

[0025] By adopting the above technical solution, this utility model has the following beneficial effects:

[0026] 1. It is connected to external equipment or connectors by screwing on the external thread. When the external thread is screwed on to the external equipment or connector, the external sealing ring is located between the external equipment or connector and the housing assembly, sealing the gap between the housing assembly and the external equipment or connector, effectively preventing corrosive media such as salt spray and water vapor from entering the interior.

[0027] 2. The internal thread is used to connect the cable to the cable. After the internal thread is connected to the cable, the inner sealing ring seals the through hole, effectively preventing salt spray, water vapor and other substances from seeping into the housing assembly through the through hole. Together with the outer sealing ring, it forms a double sealing structure, which improves the salt spray resistance of the RF coaxial connector and protects the inner conductor assembly 7 from corrosion.

[0028] 3. The shielding cover and the metal shielding mesh form a double-layer electromagnetic shielding structure, which effectively suppresses electromagnetic interference, prevents radio frequency signal leakage and the entry of external electromagnetic interference, improves the electromagnetic compatibility of the connector, ensures good electrical contact, and forms a complete electromagnetic shielding space. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of the salt spray resistant radio frequency coaxial connector provided in the embodiments of this application;

[0031] Figure 2 Another structural schematic diagram of the salt spray resistant RF coaxial connector provided in the embodiments of this application;

[0032] Figure 3 An exploded view of the inner conductor assembly and insulating support assembly of the salt spray resistant radio frequency coaxial connector provided in an embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the internal structure of the housing assembly of the salt spray resistant radio frequency coaxial connector provided in an embodiment of this application.

[0034] Reference numerals: 1. Housing assembly; 2. Connecting edge; 3. External thread; 4. Anti-slip knurled ring; 5. External sealing ring; 6. Front internal thread; 7. Inner conductor assembly; 8. Front support; 9. Middle support; 10. Rear support; 11. Metal shielding mesh; 12. Shielding cover; 13. Rear internal thread; 14. Limiting slot; 15. Sealing plate; 16. Through hole; 71. Welding section; 72. Signal transmission section; 73. Connection transition section.

[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0036] The specific embodiments of this utility model will be described in further detail with reference to the accompanying drawings.

[0037] See Figures 1 to 4 As shown in the figure, this application provides a salt spray resistant radio frequency coaxial connector, including: a shell assembly 1, an inner conductor assembly 7, and an insulating support assembly. The shell assembly 1 is a cylindrical structure. A sealing plate 15 is provided at the front end of the shell assembly 1, and a through hole 16 is provided at the center of the sealing plate 15. An external thread 3 and a rear internal thread 13 are provided at the rear end of the shell assembly 1. An annular groove is also provided on the outer peripheral wall of the shell assembly 1, and an outer sealing ring 5 is provided in the annular groove. A connecting edge 2 is provided on the front side of the sealing plate 15, and a front internal thread 6 is provided on the inner side of the connecting edge 2. The inner conductor assembly 7 is coaxially disposed in the shell assembly 1, and the front end of the inner conductor assembly 7 passes through the through hole 16. An inner sealing ring is sleeved on the inner conductor assembly 7, and the outer peripheral wall of the inner sealing ring fits against the inner wall of the through hole 16. The inner sealing ring is used to seal the through hole 16. The insulating support assembly is detachably sleeved on the inner conductor assembly 7, and the outer wall of the insulating support assembly abuts against the inner wall of the shell assembly 1.

[0038] It should be noted that the external thread 3 is used for threaded connection with external equipment or connectors, and the outer shell assembly 1, as the outermost structure of the connector, wraps around and protects the inner conductor assembly 7, resisting external mechanical shocks and collisions.

[0039] In the above scheme, the external thread 3 is screwed into the external device or connector. When the external thread 3 is screwed into the external device or connector, the external sealing ring 5 is located between the external device or connector and the housing assembly 1, sealing the gap between the housing assembly 1 and the external device or connector, effectively preventing corrosive media such as salt spray and water vapor from entering the interior. Then, the internal thread 6 is screwed into the cable connection part. After the internal thread 6 is connected to the cable connection part, the internal sealing ring seals the through hole 16, effectively preventing salt spray, water vapor and other substances from seeping into the interior of the housing assembly 1 along the through hole 16. Together with the external sealing ring 5, it forms a double sealing structure, which improves the salt spray resistance sealing performance of the RF coaxial connector and protects the inner conductor assembly 7 from corrosion.

[0040] See some possible implementations. Figure 3 As shown, the inner conductor assembly 7 includes a welding section 71, a signal transmission section 72, and a connection transition section 73, which are fixedly connected from right to left. The welding section 71 is welded to the cable, and the connection transition section 73 is connected to the inner conductor of an external device or connector. The diameter of the connection transition section 73 decreases from right to left.

[0041] In the above scheme, the welding section 71, the signal transmission section 72 and the connection transition section 73 use high-purity oxygen-free copper as the base material. The diameter of the connection transition section 73 decreases from right to left to ensure smooth signal transition, reduce signal reflection and improve signal transmission quality.

[0042] See some possible implementations. Figure 3 and Figure 4 As shown, a limiting groove 14 is formed on the inner side of the outer casing assembly 1 along its length direction. A protrusion is provided on the insulating support assembly along its length direction. The insulating support assembly is limited within the limiting groove 14 by the protrusion. The insulating support assembly includes a front support 8, a middle support 9, and a rear support 10 that are sequentially snapped together from right to left. The protrusion is provided on the outer peripheral wall of the front support 8, the middle support 9, and the rear support 10 along its length direction. The front support 8 is fitted onto the welding section 71, the middle support 9 is fitted onto the signal transmission section 72, and the rear support 10 is fitted onto the connecting transition section 73. The front support 8, the middle support 9, and the rear support 10 have connecting holes in their centers and only cooperate with the corresponding welding section 71, signal transmission section 72, and connecting transition section 73.

[0043] In the above scheme, the front support 8, the middle support 9, and the rear support 10 are made of polytetrafluoroethylene (PTFE). The front support 8, the middle support 9, and the rear support 10 are all limited in the limiting slot 14 by protrusions to achieve circumferential fixation. The front support 8, the middle support 9, and the rear support 10 are connected by snap-fit, which facilitates installation and disassembly. At the same time, a stable manufacturing structure is formed, which improves the structural strength and stability of the insulating support assembly. It can maintain the accurate position of the welding section 71, the signal transmission section 72, and the connecting transition section 73 under complex mechanical environments and temperature changes, ensuring the stable transmission of radio frequency signals. It also ensures the electrical insulation between the welding section 71, the signal transmission section 72, and the connecting transition section 73 and the outer shell assembly 1, preventing signal leakage and short circuits.

[0044] See some possible implementations. Figure 2 and Figure 3 As shown, a detachable metal shielding mesh 11 is also provided inside the outer casing assembly 1. The metal shielding mesh 11 is attached to the rear end face of the support 10. A movable shielding cover 12 is provided on the outside of the metal shielding mesh 11. The shielding cover 12 is screwed onto the rear internal thread 13.

[0045] In the above scheme, the metal shielding mesh 11 is woven from tin-plated copper wire, and the shielding cover 12 is made of stainless steel and is threaded to the rear internal thread 13 of the outer shell assembly 1. The shielding cover 12 and the metal shielding mesh 11 form a double-layer electromagnetic shielding structure, which effectively suppresses electromagnetic interference, prevents radio frequency signal leakage and the entry of external electromagnetic interference, improves the electromagnetic compatibility of the connector, ensures good electrical contact, and forms a complete electromagnetic shielding space. At the same time, it can also provide a certain degree of physical protection for the soldering section 71, the signal transmission section 72 and the connection transition section 73.

[0046] See some possible implementations. Figure 1 , Figure 2 and Figure 4 As shown, the outer casing assembly 1 is also provided with an anti-slip knurled ring 4. The knurling on the surface of the anti-slip knurled ring 4 is spiral, which makes it easy for operators to manually install and remove it.

[0047] In some possible implementations, the surfaces of the welding section 71, the signal transmission section 72, and the connection transition section 73 are all plated with a conductive gold layer to improve the conductivity and corrosion resistance of the welding section 71, the signal transmission section 72, and the connection transition section 73.

[0048] This specific embodiment is merely an explanation of the utility model and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection of this utility model.

Claims

1. A salt spray resistant radio frequency coaxial connector, characterized in that, include: The outer shell assembly (1) is a cylindrical structure. A sealing plate (15) is provided at the front end of the outer shell assembly (1). A through hole (16) is provided at the center of the sealing plate (15). An external thread (3) and a rear internal thread (13) are provided at the rear end of the outer shell assembly (1). An annular groove is also provided on the outer peripheral wall of the outer shell assembly (1). An outer sealing ring (5) is provided in the annular groove. A connecting edge (2) is provided on the front side of the sealing plate (15). A front internal thread (6) is provided on the inner side of the connecting edge (2). The inner conductor assembly (7) is coaxially disposed inside the outer shell assembly (1), and the front end of the inner conductor assembly (7) extends through the through hole (16). An inner sealing ring is fitted on the inner conductor assembly (7) to seal the through hole (16). An insulating support assembly is detachably fitted onto the inner conductor assembly (7), and the outer wall of the insulating support assembly abuts against the inner wall of the outer shell assembly (1).

2. The salt spray resistant RF coaxial connector according to claim 1, characterized in that, The inner conductor assembly (7) includes a welding section (71), a signal transmission section (72), and a connection transition section (73) that are fixedly connected from right to left. The welding section (71) is welded to the cable; The connection transition section (73) is connected to the inner conductor of an external device or connector, and the diameter of the connection transition section (73) decreases from right to left.

3. The salt spray resistant RF coaxial connector according to claim 2, characterized in that, The inner side of the outer shell assembly (1) has a limiting slot (14) along its length direction. The insulating support assembly is provided with a protrusion along its length direction, and the insulating support assembly is limited within the limiting slot (14) by the protrusion; The insulating support assembly includes a front support (8), a middle support (9) and a rear support (10) that are snapped together from right to left. The front support (8) is fitted onto the welded section (71); The central support (9) is fitted onto the signal transmission section (72); The rear support (10) is fitted onto the connecting transition section (73).

4. The salt spray resistant RF coaxial connector according to claim 3, characterized in that, The outer casing assembly (1) is also provided with a removable metal shielding mesh (11). The metal shielding mesh (11) is fitted to the rear end face of the rear support (10); The metal shielding mesh (11) is provided with a movable shielding cover (12) on the outside, and the shielding cover (12) is screwed onto the rear internal thread (13).

5. The salt spray resistant RF coaxial connector according to claim 3 or 4, characterized in that, The outer casing assembly (1) is also provided with an anti-slip knurled ring (4).

6. The salt spray resistant RF coaxial connector according to claim 3, characterized in that, The surfaces of the welding section (71), signal transmission section (72) and connection transition section (73) are all plated with a conductive gold layer.

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