A moisture-proof SMP connector

Abstract

This utility model discloses a moisture-proof SMP connector, including a connector housing A and a connector housing B. Connector housing B is mounted on one side of connector housing A, and a mating sleeve is fixedly disposed on the surface of connector housing A. A connection hole is formed at the bottom of the mating sleeve. An insulator is fixedly disposed on the surface of connector housing B, with a center pin inserted inside the insulator. An inner sealing gasket is wrapped around the outer ring surface of the insulator. This moisture-proof SMP connector features a double-seal design that significantly improves the waterproof protection of the center pin, effectively preventing moisture from entering from the outside. Even if one seal experiences a slight failure, the other seal can still function, further improving the overall sealing reliability and ensuring the normal operation of the center pin in complex environments. This prevents moisture from entering the connector and causing short circuits, thus affecting the normal operation of the circuit.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency coaxial connector technology, specifically a moisture-proof SMP connector. Background Technology

[0002] SMP (Surface Mount Multi-Pack) connectors, as miniaturized, blind-fit connectors, have garnered significant attention from users, especially in modular applications. Their small size, high operating frequency, and excellent shielding make them highly favored by RF engineers, and they are poised for even greater adoption in the foreseeable future of 5G communication technology. The connectors at both ends lack inherent floating capability; their floating is primarily achieved through the intermediate adapter. Since the adapter itself is rigid, its floating capability is relatively weak, with a maximum radial float of 0.25mm and an axial float of approximately 0.5mm. This is insufficient for high-density installations, and the large float also leads to poor interface contact between the adapter and connector, inevitably degrading performance. Generally, it can only reach 6GHz, with a maximum not exceeding 12GHz.

[0003] To address the aforementioned issues, a search revealed Chinese patent CN212257866U, which discloses a floating SMP connector. The patent includes a fixed SMPJ connector and a floating SMPK connector. The fixed SMPJ connector has an upper mounting plate on its outer side wall, and the floating SMPK connector has a lower mounting plate on its outer side wall. Screws are located on the lower mounting plate and at the bottom of the floating SMPK connector. A spring is positioned between the screws and the floating SMPK connector. The fixed SMPJ connector has a mounting hole at its bottom, and the floating SMPK connector has a mounting plug at its top, which is inserted into the cavity of the mounting hole.

[0004] Although the above-mentioned device has a spring between the lower mounting plate cavity and the screw cavity to provide floating amount, and due to the action of the spring, it can continue to withstand compression, so that the two plates on both sides can fit together completely, eliminating the intermediate adapter and making the structure more compact, in actual use, when the SMP connector is working in a humid environment, moisture may enter the connector, thereby causing a short circuit, affecting the normal operation of the circuit, and even potentially damaging the connected electronic equipment. Utility Model Content

[0005] The purpose of this invention is to provide a moisture-proof SMP connector to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a moisture-proof SMP connector is provided, comprising a connector housing A and a connector housing B. The connector housing B is mounted on one side of the connector housing A, and a mating sleeve is fixedly disposed on the surface of the connector housing A. A connection socket is provided at the bottom of the mating sleeve. An insulator is fixedly disposed on the surface of the connector housing B. A center pin is inserted inside the insulator, and an inner sealing gasket is wrapped on the outer ring surface of the insulator. The connector housing A and the connector housing B are mated by a rotary moisture-proof mating mechanism, and an outer sealing gasket is fixedly disposed on the end face of the connector housing B.

[0007] Furthermore, mounting posts are fixedly provided on the outer sides of both connector housing A and connector housing B, and threaded structures are provided on the outer ring surface of the mounting posts. At the same time, the diameters of connector housing A and connector housing B are the same.

[0008] Furthermore, the insulator is cylindrical and its size is adapted to the mating sleeve. The insulator is inserted inside the mating sleeve, and the insulator and the mating sleeve are sealed by an inner sealing gasket.

[0009] Furthermore, the rotary moisture-proof docking mechanism also includes a docking seat and a docking channel, and the connector housing A and the connector housing B are docked and fixed together through the docking seat and the docking channel.

[0010] Furthermore, five sets of mating seats are equidistantly arranged on the end face of connector housing B, and five sets of mating channels are equidistantly opened on the end face of connector housing A.

[0011] Furthermore, the docking channel includes a receiving groove and a docking groove. The end cross-section of the docking seat is circular, while the cross-section of the receiving groove is rectangular. The docking groove is adapted to the size of the docking seat. The five sets of docking seats are respectively inserted into the five sets of receiving grooves and rotated into the docking groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This solution uses five sets of mating seats at the end of connector housing B to be inserted into five sets of mating channels on the cross-section of connector housing A. By rotating connector housing B, the mating seats are inserted into the mating slots. The friction between the five sets of mating seats and the mating slots is used to fix connector housing A and connector housing B together, achieving the purpose of rapid docking of connector housing A and connector housing B. The entire operation process is simple and direct, without the need for complicated tools or cumbersome steps, and can quickly complete the docking of connector housing A and connector housing B, greatly improving the connection efficiency.

[0014] 2. This solution uses an inner sealing gasket to seal between the insulator and the mating sleeve, forming the first waterproof seal for the center pin. Connector housing A and connector housing B are sealed together using an outer sealing gasket, forming the second waterproof seal for the center pin. This dual-seal design significantly improves the waterproof protection of the center pin, effectively preventing moisture from entering from the outside. Even if one seal experiences a slight failure, the other seal can still function, further improving the overall sealing reliability. This ensures the normal operation of the center pin in complex environments and prevents moisture from entering the connector, which could cause a short circuit and affect the normal operation of the circuit. Attached Figure Description

[0015] Figure 1 This is an exploded view of the SMP connector structure of this utility model;

[0016] Figure 2 This is a three-dimensional view of the structural docking sleeve and its connection structure of this utility model;

[0017] Figure 3 This is a three-dimensional view of the internal sealing gasket and its connection structure of this utility model;

[0018] Figure 4 The structure of this utility model Figure 1 Cross-sectional view;

[0019] Figure 5 This is a three-dimensional view of the mounting structure of connector housing A and connector housing B of this utility model;

[0020] Figure 6 This is an overall appearance view of the SMP connector structure of this utility model.

[0021] The following are the labelings in the diagram: 1. Connector housing A; 11. Mounting post; 12. Mating sleeve; 13. Connecting socket; 2. Connector housing B; 21. Inner sealing gasket; 211. Insulator; 22. Center pin; 3. Rotary moisture-proof mating mechanism; 31. Mating seat; 32. Mating channel; 321. Receiving groove; 322. Mating groove; 33. Outer sealing gasket. Detailed Implementation

[0022] Please see Figure 1-6This utility model provides a moisture-proof SMP connector, including a connector housing A1 and a connector housing B2. The connector housing B2 is installed on one side of the connector housing A1, and a mating sleeve 12 is fixedly provided on the surface of the connector housing A1. At the same time, a connection socket 13 is opened at the bottom of the mating sleeve 12. An insulator 211 is fixedly provided on the surface of the connector housing B2. A center pin 22 is inserted inside the insulator 211, and an inner sealing gasket 21 is wrapped on the outer ring surface of the insulator 211. The connector housing A1 and the connector housing B2 are mated by a rotary moisture-proof mating mechanism 3, and an outer sealing gasket 33 is fixedly provided on the end face of the connector housing B2.

[0023] In a preferred embodiment, mounting posts 11 are fixedly provided on the outer sides of both connector housing A1 and connector housing B2, and threaded structures are provided on the outer ring surface of the mounting posts 11. At the same time, the diameters of connector housing A1 and connector housing B2 are the same.

[0024] The insulator 211 is cylindrical and its size is compatible with that of the mating sleeve 12. The insulator 211 is inserted inside the mating sleeve 12 and the insulator 211 and the mating sleeve 12 are sealed by an inner sealing gasket 21.

[0025] The insulator 211 and the mating sleeve 12 are sealed by the inner sealing gasket 21, forming the first waterproof seal structure for the center pin 22. Simultaneously, after the connector housing A1 and connector housing B2 are mated using five sets of mating seats 31 and mating channels 32, they are then sealed together by the outer sealing gasket 33, forming the second waterproof seal structure for the center pin 22. Both the outer sealing gasket 33 and the inner sealing gasket 21 are rubber gaskets. The double-sealing design significantly improves the waterproof protection of the center pin 22, effectively preventing moisture from entering from the outside. Even if one seal fails slightly, the other seal can still function, providing reliable waterproof protection for the conductive connection of the center pin 22. The sealing materials have good compatibility and stable sealing effect. All gaskets 21 are made of rubber. Rubber material has good elasticity and sealing properties, and can tightly fit the contact surface. After the connector housing A1 and connector housing B2 are fixed by the five sets of mating seats 31 and mating channels 32, the rubber gasket will deform due to compression, thereby filling the gap between the sealing surfaces and ensuring the tightness of the seal. In addition, the rubber material has good aging resistance and corrosion resistance, and can maintain a stable sealing effect for a long time. The structure is independent and coordinated, and the sealing reliability is high. The inner sealing gasket 21 seals the mating part between the insulator 211 and the mating sleeve 12, while the outer sealing gasket 33 seals the mating part between the connector housing A1 and the connector housing B2. The two sealing positions are different but coordinated with each other, forming protection from the internal key contact parts and the external overall mating parts, reducing the limitations that may exist in a single sealing structure, further improving the overall sealing reliability, ensuring the normal operation of the center pin 22 in complex environments, and preventing moisture from entering the connector and causing short circuits, thus affecting the normal operation of the circuit.

[0026] As a preferred embodiment, the rotary moisture-proof docking mechanism 3 also includes a docking seat 31 and a docking channel 32, and the connector housing A1 and the connector housing B2 are docked and fixed through the docking seat 31 and the docking channel 32.

[0027] Five sets of mating seats 31 are equidistantly arranged on the end face of connector housing B2, and five sets of mating channels 32 are equidistantly opened on the end face of connector housing A1.

[0028] The docking channel 32 includes a receiving groove 321 and a docking groove 322. The end cross-section of the docking seat 31 is circular, while the cross-section of the receiving groove 321 is rectangular. The docking groove 322 is adapted to the size of the docking seat 31. Five sets of docking seats 31 are respectively inserted into the interior of five sets of receiving grooves 321 and rotated into the interior of the docking groove 322.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown: By inserting the five sets of mating seats 31 at the end of connector housing B2 into the five sets of mating channels 32 on the cross-section of connector housing A1, and then rotating connector housing B2 to allow the mating seats 31 to enter the mating groove 322 from the receiving groove 321, the entire operation process is simple and direct, requiring no complicated tools or cumbersome steps, and can quickly complete the mating of connector housing A1 and connector housing B2, greatly improving the connection efficiency; the friction between the five sets of mating seats 31 and the mating groove 322 is used to achieve a fixed connection between connector housing A1 and connector housing B2. The multiple mating structures disperse the connection stress, making the combination of the two more stable, reducing the risk of poor contact due to loosening of a single connection point, and ensuring the stability of the conductive connection; Precise positioning ensures reliable signal transmission. During docking, the center pin 22 aligns with the connection socket 13. Simultaneously, the corresponding insertion design of the five sets of docking seats 31 and five sets of docking channels 32 accurately positions the relative positions of connector housing A1 and connector housing B2, preventing offset or misalignment during docking. This ensures accurate contact between the center pin 22 and the connection socket 13, guaranteeing the reliability of the SMP connector's conductive connection and facilitating stable transmission of RF signals. The design of the receiving groove 321 and docking slot 322 in the docking channel 32 provides a clear path for the insertion and rotation fixation of the docking seat 31. Operators can easily determine whether the docking is in place by feel, requiring no professional skills and lowering the barrier to entry.

[0030] Working principle: In actual use, hold connector housing A1 and connector housing B2 with both hands respectively, align the center pin 22 with the connection socket 13, and insert the five sets of mating seats 31 at the end of connector housing B2 into the five sets of mating channels 32 on the cross-section of connector housing A1. Rotate connector housing B2 so that the mating seats 31 are inserted into the mating grooves 322 from the receiving grooves 321. Using the friction between the five sets of mating seats 31 and the mating grooves 322, connector housing A1 and connector housing B2 are fixedly connected, realizing the purpose of quick docking of connector housing A1 and connector housing B2, and completing the conductive connection of SMP connector.

Claims

1. A moisture-proof SMP connector comprising a connector housing A (1) and a connector housing B (2), characterized in that: Connector housing A (1) is mounted on one side of connector housing B (2), and a mating sleeve (12) is fixedly provided on the surface of connector housing A (1). At the same time, a connection socket (13) is opened at the bottom of the mating sleeve (12). An insulator (211) is fixedly provided on the surface of connector housing B (2). A center pin (22) is inserted inside the insulator (211), and an inner sealing gasket (21) is wrapped on the outer ring surface of the insulator (211). Connector housing A (1) and connector housing B (2) are connected by a rotary moisture-proof docking mechanism (3), and an outer sealing gasket (33) is fixedly provided on the end face of connector housing B (2).

2. The moisture-resistant SMP connector of claim 1, wherein: The outer sides of both connector housing A (1) and connector housing B (2) are fixedly provided with mounting posts (11), and the outer ring surface of the mounting posts (11) is provided with a threaded structure. At the same time, the diameters of connector housing A (1) and connector housing B (2) are the same.

3. The moisture-resistant SMP connector of claim 1, wherein: The insulator (211) is cylindrical and its size is adapted to that of the mating sleeve (12). The insulator (211) is inserted inside the mating sleeve (12), and the insulator (211) and the mating sleeve (12) are sealed by an inner sealing gasket (21).

4. The moisture-resistant SMP connector of claim 1, wherein: The rotary moisture-proof docking mechanism (3) also includes a docking seat (31) and a docking channel (32), and the connector housing A (1) and the connector housing B (2) are docked and fixed through the docking seat (31) and the docking channel (32).

5. The moisture-resistant SMP connector of claim 4, wherein: The docking seat (31) is provided in five sets at equal intervals on the end face of the connector housing B (2), and the docking channel (32) is provided in five sets at equal intervals on the end face of the connector housing A (1).

6. The moisture-resistant SMP connector of claim 5, wherein: The docking channel (32) includes a receiving groove (321) and a docking groove (322). The end section of the docking seat (31) is circular, while the cross section of the receiving groove (321) is rectangular. The docking groove (322) is adapted to the size of the docking seat (31). The five sets of docking seats (31) are respectively inserted into the interior of the five sets of receiving grooves (321) and rotated into the interior of the docking groove (322).

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