A radio frequency connector for cable quick connection

Abstract

This invention relates to the field of cable connection technology and discloses a radio frequency connector for quick cable connection, including a male plug and a female plug that are interlocked. The male plug includes a first outer shell, a first center conductor, a sleeve, a threaded sleeve, a pressure ring, and a fastening nut. The female plug includes a second outer shell, a second center conductor, a sleeve, a threaded sleeve, a pressure ring, and a fastening nut. The second outer shell and the second center conductor are compatible with the first outer shell and the first center conductor but have different structures. Through the overall design of the male and female plugs, both non-interlocking ends are equipped with sleeves, threaded sleeves, pressure rings, and fastening nuts. By tightening the fastening nut with the threaded sleeve, the precise positioning of the pressure ring and the threaded sleeve, and the firm crimping and fixing of the cable shielding braid can be achieved simultaneously. During construction, only a common blade is needed to trim the cable insulation layer and inner conductor, and a conventional wrench is needed to complete the thread tightening operation. No professional welding equipment, special crimping tools, or special construction equipment are required.

Description

Technical Field

[0001] This invention relates to the field of cable connection technology, specifically to a radio frequency connector for quick cable connection. Background Technology

[0002] RF connectors are components used to achieve detachable electrical connections between RF and microwave circuits. One end is matched with cables, antennas, RF modules and other equipment. Relying on a precision coaxial structure, they transmit high-frequency electromagnetic waves, ensuring signal impedance matching and low-loss transmission. They also have shielding and anti-interference characteristics and can be repeatedly plugged and unplugged. They are widely used in various wireless communication and RF test equipment such as base stations, routers, radars, and instruments.

[0003] When radio frequency coaxial cables are used for long-term service in various high-frequency application scenarios such as communication base stations, radio frequency testing equipment, and radar systems, they are prone to failures such as outer sheath damage, shielding layer breakage, and inner conductor disconnection due to factors such as external pulling, environmental aging, and construction impacts. Traditional repair methods require first accurately cutting off the damaged section of the cable, then using specialized welding equipment to fuse the inner conductor, and finally using special crimping tools to achieve a reliable connection between the shielding layer and the cable. This process is not only cumbersome and requires high professional skills from operators, but also difficult to deploy quickly in complex field environments such as outdoors, at high altitudes, and underground. This often prolongs the downtime and significantly impacts the stable operation of radio frequency systems and communication links.

[0004] Therefore, we propose an RF connector for quick cable connection. Summary of the Invention

[0005] The purpose of this invention is to provide a radio frequency connector for quick cable connection, so as to solve the problems of the traditional repair methods mentioned in the background art, which are not only cumbersome in operation process and require high professional skills from operators.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a radio frequency connector for quick cable connection, comprising a male plug and a female plug that are mutually inserted; The male connector includes a first outer shell, a first center conductor, a sleeve, a screw sleeve, a pressure ring, and a fastening nut; The female plug includes a second outer shell, a second center conductor, a sleeve, a screw sleeve, a pressure ring, and a fastening nut; The second outer shell and the second central conductor are compatible with the first outer shell and the first central conductor, but have different structures. The sleeve, threaded sleeve, pressure ring, and fastening nut of the male plug have the same structure as those of the female plug.

[0007] Preferably, a sleeve is installed on the common internal thread of the first outer shell and the screw sleeve, the first center conductor is disposed inside the sleeve, the first outer shell, the screw sleeve, the sleeve and the first center conductor are coaxially arranged, a connecting nut is installed on the outer peripheral thread of one end of the first outer shell, a second internal thread is formed on the outer peripheral of one end of the screw sleeve, the fastening nut is used in conjunction with the second internal thread, a positioning step is provided on one side of the inner cavity of the first outer shell, and a second end face is provided on the sleeve, the positioning step is used in conjunction with the second end face.

[0008] Preferably, the male plug further includes an insulating medium, which is sleeved on the outer periphery of the first center conductor; The insulating medium is made of polyetherimide material; The outer periphery of the first center conductor is also provided with a limiting step adapted to the insulating medium, and the tail of the first center conductor is also provided with a protrusion that matches the inner conductor of the cable.

[0009] Preferably, the insulating medium and the sleeve are interference-fitted, the insulating medium is provided with an end face, and the sleeve is provided with a stepped end face. The end face and the stepped end face are used in conjunction to make the first center conductor, the insulating medium and the sleeve a whole.

[0010] Preferably, the threaded sleeve is provided with a stepped surface two, the pressure ring is provided with an end face three and an end face five, and the fastening nut is provided with an external thread and an end face four.

[0011] Preferably, one end of the outer periphery of the first outer shell is provided with an outer annular groove, and an elastic retaining ring is provided inside the outer annular groove. The inner annular groove is provided inside the connecting nut and is used in conjunction with the elastic retaining ring. One end of the outer periphery of the first outer shell is also provided with a stepped surface. A sealing washer is fitted around the outer periphery of the stepped surface. The sealing washer is located inside the connecting nut. The connecting nut has a first internal thread inside.

[0012] Preferably, the outer walls of the male and female plugs are provided with a quick-connect mechanism, which includes an assembly collar one and an assembly collar two. The assembly collar one is fixedly sleeved on the outer wall of the male plug, and the assembly collar two is fixedly sleeved on the outer wall of the female plug. Reinforcing feet are fixedly connected to the side walls of both the assembly collar one and the assembly collar two. A pin is fixedly connected to the side of the assembly collar one, and a through hole is opened on the side of the assembly collar two. The dimensions of the pin and the through hole are matched.

[0013] Preferably, an insert is fixedly connected to the side of the first assembly collar, and a through groove is provided on the side of the second assembly collar, with the insert and the through groove being sized to match.

[0014] Preferably, a support member is fixedly installed at the bottom of the second assembly collar, an elastic member is fixedly installed at the top of the support member, a movable block is fixedly installed at the top of the elastic member, a wedge is fixedly connected to the top of the movable block, and an inclined surface is provided on the side of the wedge near the first assembly collar. The movable block and the wedge are slidably connected to the second assembly collar as a whole.

[0015] Preferably, the side of the assembly collar two is provided with an annular groove, an annular protrusion is fixedly connected to the inner wall of the annular groove, and a rubber ring is movably inserted into the inner cavity of the annular groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes an integrated design for both male and female plugs, with sleeves, threaded inserts, pressure rings, and fastening nuts on their non-contact ends. By tightening the fastening nuts and threaded inserts, precise positioning of the pressure ring and threaded insert, and secure crimping of the cable shielding braids, can be achieved simultaneously. During construction, only a standard blade is needed to trim the cable insulation layer and inner conductor, and a regular wrench is required for thread tightening. No specialized welding equipment, crimping tools, or special construction materials are needed. This allows for rapid repair of broken or damaged cables in various complex field environments. This design significantly reduces the operational threshold and equipment costs for on-site repairs, effectively shortening fault recovery time and improving emergency repair efficiency. Furthermore, the precise fit of the coaxial structure ensures impedance continuity and shielding performance for radio frequency signal transmission, preventing increased signal loss and electromagnetic interference. It fully balances the convenience of on-site construction with the electrical reliability of radio frequency transmission. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a cross-sectional view of the female plug and male plug when separated according to Embodiment 1 of the present invention; Figure 3 This is a sectional view of the female plug and male plug according to Embodiment 1 of the present invention; Figure 4 This is a cross-sectional structural diagram of the female plug and male plug when they are connected according to Embodiment 1 of the present invention; Figure 5 A schematic diagram of the cable stripping structure; Figure 6 This is a schematic diagram of the quick docking mechanism according to Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the assembly collar one and assembly collar two in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the structure of the second assembled collar according to Embodiment 2 of the present invention.

[0018] In the diagram: 100, male plug; 200, female plug; 1, center conductor; 2, outer shell; 3, threaded sleeve; 4, fastening nut; 5, connecting nut; 6, sleeve; 7, insulating medium; 8, elastic retaining ring; 9, outer annular groove; 10, inner annular groove; 11, stepped surface one; 12, sealing washer; 13, first internal thread; 14, positioning step; 15, protrusion; 16, limiting step; 17, second internal thread; 18, stepped end face; 19, stepped surface two; 20, pressure ring. 21. End face one; 22. End face two; 23. End face three; 24. External thread; 25. End face four; 26. End face five; 27. No. 2 outer shell; 28. No. 2 center conductor; 50. Quick docking mechanism; 51. Assembly collar one; 52. Assembly collar two; 53. Reinforcing foot; 54. Annular groove; 55. Rubber ring; 56. Insert post; 57. Through hole; 58. Insert strip; 59. Through groove; 591. Support component; 592. Elastic component; 593. Movable block; 594. Wedge block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Please see Figures 1-5 The present invention provides a technical solution: a radio frequency connector for quick cable connection, comprising a male plug 100 and a female plug 200 that are plugged into each other; The male plug 100 includes a first outer shell 2, a first center conductor 1, a sleeve 6, a screw sleeve 3, a pressure ring 20, and a fastening nut 4; The female plug 200 includes a second outer shell 27, a second center conductor 28, a sleeve 6, a screw sleeve 3, a pressure ring 20, and a fastening nut 4; The second outer casing 27 and the second center conductor 28 are compatible with the first outer casing 2 and the first center conductor 1, but their structures are different. The sleeve 6, screw sleeve 3, pressure ring 20, and fastening nut 4 of the male plug 100 have the same structure as those of the female plug 200. Through the overall design of the male plug 100 and female plug 200, both non-contact ends are equipped with sleeve 6, screw sleeve 3, pressure ring 20, and fastening nut 4. By tightening the fastening nut 4 and screw sleeve 3, the precise positioning of the pressure ring 20 and screw sleeve 3 and the firm crimping and fixing of the cable shielding braid can be achieved simultaneously. During construction, only a common blade is needed to trim the cable insulation layer and inner conductor, and a conventional wrench is required. The thread tightening operation can be completed manually, without the need for professional welding equipment, special crimping tools, or special construction materials. This allows for the rapid repair of broken or damaged cables in various complex field environments. The design significantly reduces the operational threshold and equipment costs for on-site emergency repairs, effectively shortens fault recovery time, and improves emergency repair efficiency. Furthermore, the precise fit of the coaxial structure ensures the impedance continuity and shielding performance of radio frequency signal transmission, avoiding increased signal loss and electromagnetic interference. It fully balances the convenience of on-site construction with the electrical reliability of radio frequency transmission.

[0021] In a preferred embodiment, a sleeve 6 is installed on the common internal thread of the first outer shell 2 and the screw sleeve 3. The first center conductor 1 is disposed inside the sleeve 6. The first outer shell 2, the screw sleeve 3, the sleeve 6 and the first center conductor 1 are coaxially arranged. A connecting nut 5 is installed on the outer peripheral thread of one end of the first outer shell 2. A second internal thread 17 is opened on the outer peripheral of one end of the screw sleeve 3. The fastening nut 4 is used in conjunction with the second internal thread 17. A positioning step 14 is provided on one side of the inner cavity of the first outer shell 2. An end face 22 is provided on the sleeve 6. The positioning step 14 is used in conjunction with the end face 22.

[0022] In a preferred embodiment, the male plug 100 further includes an insulating medium 7, which is sleeved on the outer periphery of the first center conductor 1. Insulating medium 7 is made of polyetherimide material; The outer periphery of the No. 1 center conductor 1 is also provided with a limiting step 16 adapted to the insulating medium 7, and the tail of the No. 1 center conductor 1 is also provided with a protrusion 15 located in the inner conductor of the cable.

[0023] In the preferred embodiment, the insulating medium 7 and the sleeve 6 are interference-fitted. The insulating medium 7 is provided with an end face 21, and the sleeve 6 is provided with a stepped end face 18. The end face 21 and the stepped end face 18 are used in conjunction to make the first center conductor 1, the insulating medium 7 and the sleeve 6 become a whole.

[0024] In a preferred embodiment, the threaded sleeve 3 is provided with a stepped surface 19, the pressure ring 20 is provided with an end face 23 and an end face 26, and the fastening nut 4 is provided with an external thread 24 and an end face 25.

[0025] In a preferred embodiment, an outer annular groove 9 is provided at one end of the outer periphery of the first outer shell 2, and an elastic retaining ring 8 is provided inside the outer annular groove 9. An inner annular groove 10 is provided inside the connecting nut 5, and the inner annular groove 10 is used in conjunction with the elastic retaining ring 8. A stepped surface 11 is also provided at one end of the outer periphery of the first outer shell 2, and a sealing washer 12 is fitted around the outer periphery of the stepped surface 11. The sealing washer 12 is provided inside the connecting nut 5, and a first internal thread 13 is provided inside the connecting nut 5.

[0026] Example 2 Please see Figures 6-8 The difference from the first embodiment is that the mating ends of the male plug 100 and the female plug 200 are designed as quick-connection mechanisms 50. The outer walls of the male plug 100 and the female plug 200 are provided with quick-connection mechanisms 50. The quick-connection mechanism 50 includes an assembly collar one 51 and an assembly collar two 52. The assembly collar one 51 is fixedly fitted onto the outer wall of the male plug 100, and the assembly collar two 52 is fixedly fitted onto the outer wall of the female plug 200. The side walls of both the assembly collar one 51 and the assembly collar two 52 are fixedly connected to... The assembly collar 51 has a reinforcing foot 53, and a pin 56 is fixedly connected to the side of the assembly collar 51. The side of the assembly collar 52 has a through hole 57. The pin 56 and the through hole 57 are sized to fit together. In use, the pin 56 is inserted into the through hole 57, so that the assembly collar 51 and the assembly collar 52 are connected, thus completing the connection between the male plug 100 and the female plug 200, which is convenient for users. The design of the reinforcing foot 53 improves the stability of the installation of the assembly collar 51 or the assembly collar 52.

[0027] In the preferred embodiment, an insert 58 is fixedly connected to the side of the first assembly collar 51, and a through groove 59 is provided on the side of the second assembly collar 52. The insert 58 and the through groove 59 are sized to fit together. Through the design of the insert 58 and the through groove 59, the first assembly collar 51 and the second assembly collar 52 can only be connected in one direction, avoiding mis-insertion and increasing the safety of the connection.

[0028] In a preferred embodiment, a support member 591 is fixedly installed at the bottom of the assembly collar 2 52, an elastic member 592 is fixedly installed at the top of the support member 591, a movable block 593 is fixedly installed at the top of the elastic member 592, and a wedge block 594 is fixedly connected to the top of the movable block 593. The wedge block 594 has an inclined surface on the side near the assembly collar 1 51. The movable block 593 and the wedge block 594 are slidably connected to the assembly collar 2 52. When the male plug 100 and the female plug 200 are mated, the insertion strip 58 is inserted into the through groove 59, simultaneously causing the insertion post 56 to be inserted into the through hole 57. During the insertion process... The insert 58 pushes the inclined surface of the wedge 594, causing the wedge 594 and the movable block 593 to retract and slide as a whole, facilitating the insertion of the insert 58. At the same time, it compresses the elastic element 592. After the insert 58 is inserted into place, the elastic force of the elastic element 592 pushes the movable block 593 and the wedge 594 as a whole, causing the wedge 594 to be inserted into the interior of the insert 58, i.e., locked into the docking state. When separating the male plug 100 and the female plug 200, manually push the movable block 593 to cause the wedge 594 to be withdrawn from the interior of the insert 58, and then pull the male plug 100 away from the female plug 200.

[0029] In a preferred embodiment, an annular groove 54 is provided on the side of the assembly collar 2 52. An annular protrusion rib is fixedly connected to the inner wall of the annular groove 54. A rubber ring 55 is movably inserted into the inner cavity of the annular groove 54. Through the design of the rubber ring 55, the connection between the assembly collar 1 51 and the assembly collar 2 52 can be sealed, increasing the waterproof capability of this structure. During maintenance, the rubber ring 55 can be pulled out and inserted inside the annular groove 54 to replace any damaged rubber ring 55. Through the design of the annular protrusion rib, the installed rubber ring 55 can be padded to ensure the sealing effect.

[0030] Working principle: When connecting a damaged or broken cable, first process the male connector 100. Insert the coaxial cable into the fastening nut 4, with the external thread 24 facing outwards along the cable axis. Fold the cable shielding braid over the end face 25 of the fastening nut 4. Insert the pressure ring 20 into the coaxial cable core insulation, with the end face 26 facing outwards along the cable axis. Tighten the external thread 24 of the fastening nut 4 and the second internal thread 17 of the threaded sleeve 3, so that the end face 23 of the pressure ring 20 aligns with the stepped surface 2 of the threaded sleeve 3. 19 are matched, and the cable shield braided wire is crimped firmly. The excess core wire of the coaxial cable is cut off so that the cable core insulation, the inner conductor of the cable and the end face 26 of the pressure ring 20 are on the same plane. After the screw sleeve 3 is connected to the first outer shell 2 by the thread, the positioning step 14 is tightly fitted with the end face 22. The protrusion 15 of the first center conductor 1 is reliably in contact with the inner conductor of the coaxial cable. Then the female plug 200 is treated in the same way. Then the male plug 100 and the female plug 200 are connected. When assembling the male plug 100 and the female plug 200, insert the insert strip 58 into the through slot 59, and simultaneously insert the pin 56 into the through hole 57. During the insertion process, the insert strip 58 pushes the inclined surface of the wedge block 594, causing the wedge block 594 and the movable block 593 to retract and slide as a whole, facilitating the insertion of the insert strip 58. At the same time, it compresses the elastic element 592. After the insert strip 58 is in place, the elastic force of the elastic element 592 pushes the movable block 593 and the wedge block 594 as a whole, causing the wedge block 594 to be inserted into the interior of the insert strip 58, thus locking the connection. When separating the male plug 100 and the female plug 200, manually push the movable block 593 to remove the wedge block 594 from the interior of the insert strip 58, and then pull the male plug 100 away from the female plug 200.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radio frequency connector for quick cable connection, characterized in that: Includes a male plug (100) and a female plug (200) that are plugged into each other; The male plug (100) includes a first outer shell (2), a first center conductor (1), a sleeve (6), a screw sleeve (3), a pressure ring (20), and a fastening nut (4); The female plug (200) includes a second outer shell (27), a second center conductor (28), a sleeve (6), a screw sleeve (3), a pressure ring (20), and a fastening nut (4); The second outer shell (27) and the second central conductor (28) are compatible with the first outer shell (2) and the first central conductor (1) but have different structures; The sleeve (6), screw sleeve (3), pressure ring (20), and fastening nut (4) of the male plug (100) have the same structure as the sleeve (6), screw sleeve (3), pressure ring (20), and fastening nut (4) of the female plug (200).

2. The RF connector for quick cable connection according to claim 1, characterized in that: The first outer shell (2) and the screw sleeve (3) are connected by a common thread to a sleeve (6). The first center conductor (1) is located inside the sleeve (6). The first outer shell (2), the screw sleeve (3), the sleeve (6) and the first center conductor (1) are coaxially arranged. A connecting nut (5) is installed on the outer circumference thread at one end of the first outer shell (2). A second internal thread (17) is opened on the outer circumference of one end of the screw sleeve (3). The fastening nut (4) is used in conjunction with the second internal thread (17). A positioning step (14) is provided on one side of the inner cavity of the first outer shell (2). An end face (22) is provided on the sleeve (6). The positioning step (14) is used in conjunction with the end face (22).

3. The RF connector for quick cable connection according to claim 2, characterized in that: The male plug (100) also includes an insulating medium (7), which is sleeved on the outer periphery of the first center conductor (1); The insulating medium (7) is made of polyetherimide material; The outer periphery of the first center conductor (1) is also provided with a limiting step (16) adapted to the insulating medium (7), and the tail of the first center conductor (1) is also provided with a protrusion (15) located in the inner conductor of the cable.

4. The RF connector for quick cable connection according to claim 3, characterized in that: The insulating medium (7) is interference-fitted with the sleeve (6). The insulating medium (7) is provided with an end face (21), and the sleeve (6) is provided with a stepped end face (18). The end face (21) and the stepped end face (18) are used together to make the first center conductor (1), the insulating medium (7) and the sleeve (6) a whole.

5. The RF connector for quick cable connection according to claim 4, characterized in that: The threaded sleeve (3) is provided with a stepped surface two (19), the pressure ring (20) is provided with an end face three (23) and an end face five (26), and the fastening nut (4) is provided with an external thread (24) and an end face four (25).

6. The RF connector for quick cable connection according to claim 5, characterized in that: One end of the outer periphery of the first outer shell (2) is provided with an outer annular groove (9), and an elastic retaining ring (8) is provided inside the outer annular groove (9). The inner annular groove (10) is provided inside the connecting nut (5). The inner annular groove (10) is used in conjunction with the elastic retaining ring (8). One end of the outer periphery of the first outer shell (2) is also provided with a stepped surface (11). A sealing washer (12) is fitted around the outer periphery of the stepped surface (11). The sealing washer (12) is provided inside the connecting nut (5). The connecting nut (5) is provided with a first internal thread (13).

7. The RF connector for quick cable connection according to claim 1, characterized in that: The outer walls of the male plug (100) and the female plug (200) are provided with quick docking mechanisms (50). The quick docking mechanism (50) includes an assembly collar one (51) and an assembly collar two (52). The assembly collar one (51) is fixedly sleeved on the outer wall of the male plug (100), and the assembly collar two (52) is fixedly sleeved on the outer wall of the female plug (200). Reinforcing feet (53) are fixedly connected to the side walls of the assembly collar one (51) and the assembly collar two (52). A plug post (56) is fixedly connected to the side of the assembly collar one (51), and a through hole (57) is opened on the side of the assembly collar two (52). The sizes of the plug post (56) and the through hole (57) are matched.

8. The RF connector for quick cable connection according to claim 7, characterized in that: The side of the first assembly collar (51) is fixedly connected with a strip (58), and the side of the second assembly collar (52) is provided with a through groove (59). The dimensions of the strip (58) and the through groove (59) are matched.

9. The RF connector for quick cable connection according to claim 8, characterized in that: A support member (591) is fixedly installed at the bottom of the second assembly collar (52), an elastic member (592) is fixedly installed at the top of the support member (591), a movable block (593) is fixedly installed at the top of the elastic member (592), a wedge (594) is fixedly connected to the top of the movable block (593), and an inclined surface is provided on the side of the wedge (594) near the first assembly collar (51). The movable block (593) and the wedge (594) are slidably connected to the second assembly collar (52).

10. The RF connector for quick cable connection according to claim 9, characterized in that: The side of the assembly collar (52) is provided with an annular groove (54), and an annular protruding rib is fixedly connected to the inner wall of the annular groove (54). A rubber ring (55) is movably inserted into the inner cavity of the annular groove (54).

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