A connector for a cable having a helically corrugated outer conductor and methods of use thereof

Abstract

The application discloses a connector for a cable with a spiral-rolled outer conductor and a use method thereof, comprising a connecting nut, a cable is arranged in the connecting nut, the cable extends to the outside of one end in the connecting nut and is provided with a first thread, a polygonal metal bushing for clamping the cable is arranged at one end close to the first thread in the connecting nut, and a sealing ring and a locking nylon clamp for secondary locking of the cable are sequentially arranged on one side away from the polygonal metal bushing in the connecting nut. Compared with a traditional welding type, the application adopts a mounting type, is used in an outdoor construction site, has strong construction adaptability, meets the outdoor use of a harsh environment, adopts a rotation constraint mode, improves the anti-torque of the connector and the cable from no consideration to more than 5N*m, can exceed the torsion resistance of the cable itself, and greatly improves the mechanical performance of the assembly.

Description

Technical Field

[0001] This invention specifically relates to a connector for a cable with a helical corrugated outer conductor and a method of using the connector therewith. Background Technology

[0002] Flexible corrugated cables are divided into two types: ring-shaped corrugated outer conductor flexible cables and spiral corrugated outer conductor ultra-flexible cables; spiral corrugated outer conductor ultra-flexible cables have higher flexibility and smaller bending radius.

[0003] Spiral-patterned corrugated outer conductor ultra-flexible cable: the outer conductor is spiral-patterned, which is not a complete ring at any interface. The thickness of the copper strip in the cross-section varies from 0 to the thickness of the copper strip itself and is irregular. When in contact with the outer conductor of a connector, effective and sufficient engagement cannot be achieved. In traditional assembly-type spiral-patterned outer conductors, the outer conductor will loosen in the opposite direction of the thread rotation during use. To achieve effective contact and transmission in spiral-patterned corrugated outer conductor ultra-flexible cable assemblies, the outer conductor is usually welded to avoid the limitations of assembly-type connectors. Alternatively, assembly-type connectors may have reduced intermodulation requirements. In field construction, where on-site installation is necessary, considering locations without power or air supply, a connector with reliable contact and superior electrical performance is required. Summary of the Invention

[0004] The purpose of this invention is to provide a connector for cables with helical corrugated outer conductors and a method of using the same, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a connector for a cable with a spirally corrugated outer conductor, comprising a connecting nut, wherein a cable is disposed inside the connecting nut, and a first thread is provided on the outer side of one end of the cable extending inside the connecting nut, and a polygonal metal bushing for clamping the cable is disposed inside the connecting nut near the end of the first thread, and a sealing ring and a locking nylon clip for secondary locking of the cable are sequentially disposed inside the connecting nut away from the polygonal metal bushing.

[0006] Preferably, the polygonal bushing has a third thread that matches the first thread, and the polygonal bushing has a groove for engaging the sealing ring on the side near the sealing ring, and the grooves are multiple and arranged in a circumferential array.

[0007] Preferably, protrusions that match the groove are provided at equal intervals around the outer side of the sealing ring, and a second thread that matches the first thread is provided inside the sealing ring.

[0008] Preferably, the pitch and radius of the first thread are the same as those of the second and third threads, and the first, second, and third threads fit together.

[0009] Preferably, a fixing rubber ring is provided on the outside of a section of the cable located on the locking nylon clip, the locking nylon clip is located on the outside of the fixing rubber ring, and the locking nylon clip limits and fixes the fixing rubber ring.

[0010] Preferably, a first wedge block and a second wedge block are arranged sequentially on the left and right sides between the connecting nut and the cable to increase the pressure of the connecting nut on the cable.

[0011] Preferably, a base is provided on the side of the polygonal metal bushing away from the sealing ring, and an installation groove is provided on the side of the base near the polygonal metal bushing. Springs are installed on both sides of the installation groove, and movable plates are respectively connected to the opposite surfaces of the two springs.

[0012] Preferably, the movable plate extends through the mounting groove to the outside of the mounting groove and connects to a limiting plate. A sliding groove is provided within the mounting groove, and a slider slides along the length of the sliding groove. The slider is connected to the movable plate. Preferably, the base has a strip-shaped groove communicating with the mounting groove on the side away from the mounting groove. The movable block has a handle on the side near the strip-shaped groove, and the connecting nut has a limiting groove adapted to the limiting block on the side near the limiting block.

[0013] A method of using a connector for a cable with a helical corrugated outer conductor includes the following steps: Step A: First, a fixing rubber ring is fitted on the outside of the end of the cable with the first thread. Then, the end of the cable with the first thread is inserted into the connecting nut, and then the locking nylon clip, sealing ring and polygonal metal bushing are passed through in sequence. Step B: When the cable passes through the locking nylon clip, the locking nylon clip abuts against the fixing rubber ring to fix the fixing rubber ring. Then, the polygonal metal bushing is moved toward the connecting nut so that the protrusion on the outside of the sealing ring is engaged in the groove. Step C: The cable is wrapped by a fixing rubber ring and a locking nylon clamp, and both ends are clamped by polygonal metal bushings and connecting nuts respectively. The space between the polygonal bushings and connecting nuts is compressed by locking the connecting nuts with threads. The friction coefficient of the fixing rubber ring is used to actively lock the cable a second time with a sealing ring and a locking nylon clamp. Step D: Press the two handles to make the slider slide in the groove, which will drive the two moving plates to move closer to each other. As the two moving plates move closer, they will stretch the two springs and make the two limiting plates move closer to each other at the same time. Step E: Then, insert the two adjacent limiting plates into the limiting grooves, release the handle, and as the spring deforms, the elastic force drives the two moving plates to move away from each other, so that the two limiting plates are respectively engaged in the limiting grooves, completing the installation of the polygonal metal bushing.

[0014] The technical effects and advantages of this invention are as follows: This invention provides a connector for cables with spiral corrugated outer conductors and its usage method. By employing a sealing ring with an external boss and a locking nylon clamp for secondary active locking, it ensures a reliable and sufficient connection between the cable and the connector, preventing loosening. It can achieve excellent dynamic third-order intermodulation (PIM), with a typical value reaching -125dBm. Compared with the traditional welding type, this application adopts an assembly type, which is suitable for field construction sites and has strong construction adaptability, meeting the requirements of harsh outdoor environments. It adopts a rotational constraint method, increasing the torque resistance of the connector and cable from no consideration to over 5N*m, which can exceed the cable's own torque resistance and significantly improve the mechanical performance of the component. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the sealing ring of the present invention; Figure 3 This is a side view of the entire invention; Figure 4 This is a cross-sectional view of the entire invention; Figure 5 This is a schematic diagram of the structure of the boss of the present invention; Figure 6 This is a schematic diagram of the groove structure of the present invention; Figure 7 For the present invention Figure 2 A magnified structural diagram of point A in the middle.

[0016] In the diagram: 1. Connecting nut; 2. Limiting groove; 3. Locking nylon clip; 4. Sealing ring; 5. Polygonal metal bushing; 6. Cable; 7. Strip groove; 8. Handle; 9. First thread; 10. Boss; 11. Second thread; 12. Third thread; 13. Groove; 14. Fixing rubber ring; 15. First wedge block; 16. Second wedge block; 17. Mounting groove; 18. Spring; 19. Slider; 20. Slide groove; 21. Moving plate; 22. Limiting plate; 23. Base. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] To ensure a reliable and sufficient connection between cable 6 and the connector, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the connector includes a connecting nut 1, inside which a cable 6 is disposed. The cable 6 extends into the connecting nut 1 and has a first thread 9 on its outer side. A polygonal metal bushing 5 for clamping the cable 6 is disposed inside the connecting nut 1 near the first thread 9. A sealing ring 4 and a locking nylon clamp for secondary locking of the cable 6 are sequentially disposed inside the connecting nut 1 away from the polygonal metal bushing 5. Compared with the traditional welding type, this application adopts an assembly type, which is suitable for field construction sites and has strong construction adaptability. It meets the requirements of harsh outdoor environments and adopts a rotational constraint method to increase the torque resistance of the connector and cable 6 from no consideration to more than 5 N*m, which can exceed the torque resistance of the cable 6 itself. The sealing ring 4 with an external boss 10 and the locking nylon clamp are used for secondary active locking to ensure that the connection between the cable 6 and the connector is reliable and sufficient and will not loosen. It can achieve excellent dynamic third-order intermodulation PIM.

[0019] To facilitate the machining and drilling of holes in the outer conductor of the coaxial cable's metal tube, refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the polygonal bushing has a third thread 12 that matches the first thread 9, and a groove 13 for engaging the sealing ring 4 is provided on the side of the polygonal bushing near the sealing ring 4. Multiple grooves 13 are arranged in a circular array. Protrusions that match the grooves 13 are equidistantly spaced around the outer circumference of the sealing ring 4. A second thread 11 that matches the first thread 9 is provided inside the sealing ring 4. The pitch and curvature of the first thread 9 are the same as those of the second thread 11 and the third thread 12. The first thread 9 and the second thread 11... The cable 6 and the third thread 12 are in contact with each other. A fixing rubber ring 14 is provided on the outside of the locking nylon clip 3. The locking nylon clip 3 is located on the outside of the fixing rubber ring 14 and limits and fixes the fixing rubber ring 14. A first wedge block 15 and a second wedge block 16 are arranged in a left-right sequence between the connecting nut 1 and the cable 6 to increase the pressure of the connecting nut 1 on the cable 6. A base 23 is provided on the side of the polygonal metal bushing 5 away from the sealing ring 4. An opening is provided on the side of the base 23 near the polygonal metal bushing 5. Mounting slot 17, with springs 18 installed on both sides inside the mounting slot 17. Two moving plates 21 are respectively connected to the opposite faces of the two springs 18. The moving plates 21 extend through the mounting slot 17 and connect to a limit plate 22 outside the mounting slot 17. A sliding groove 20 is formed inside the mounting slot 17, and a slider 19 slides along the length of the sliding groove 20. The slider 19 is connected to the moving plate 21. A strip groove 7 communicating with the mounting slot 17 is formed on the side of the base 23 away from the mounting slot 17. A handle 8 is provided on the side of the moving block near the strip groove 7. The connecting nut 1 has a limiting groove 2 that matches the limiting block on the side near the limiting block. The polygonal metal bushing 5 and the fixing rubber ring 14 are fully engaged with the first thread 9 on the cable 6. The groove 13 of the polygonal metal bushing 5 engages with the boss 10 of the sealing ring 4 to ensure that the second thread 11 and the third thread 12 pass through without overlap. Preferably, there are more than two grooves 13 and bosses 10, and at least one pair of grooves 13 and bosses 10 are one size larger to indicate the assembly position and ensure that the second thread 11 and the third thread 12 pass through without overlap. The cable 6 is wrapped by the fixing rubber ring 14 and the locking nylon clamp, and both ends are clamped by the polygonal metal bushing 5 and the connecting nut 1, respectively. The space between the polygonal metal bushing 5 and the connecting nut 1 is compressed by the threaded locking of the connecting nut 1. Taking advantage of the high coefficient of friction of the rubber fixing ring, the sealing ring 4 with the boss 10 on the outside and the locking nylon clamp are used for secondary active locking to ensure that the cable 6 is reliably and fully connected to the connector and will not loosen. During the connection process, the polygonal metal bushing 5 and the cable 6 do not rotate; only the connecting nut 1 rotates to lock.

[0020] A method of using a connector for a cable 6 with a helical corrugated outer conductor includes the following steps: Step A: First, a fixing rubber ring 14 is fitted on the outer side of the end of the cable 6 with the first thread 9. Then, the end of the cable 6 with the first thread 9 is inserted into the connecting nut 1 and passed through the locking nylon clip, sealing ring 4 and polygonal metal bushing 5 in sequence. Step B: When the cable passes through the locking nylon clip 3, the locking nylon clip abuts against the fixing rubber ring 14 to fix the fixing rubber ring 14. Then, the polygonal metal bushing 5 is brought closer to the connecting nut 1 so that the protrusion 10 on the outside of the sealing ring 4 is engaged in the groove 13. In step C, the cable 6 is wrapped by the fixing rubber ring 14 and the locking nylon clamp, and both ends are clamped by the polygonal metal bushing 5 and the connecting nut 1 respectively. The space between the polygonal bushing and the connecting nut 1 is compressed by the thread of the connecting nut 1. The friction coefficient of the fixing rubber ring 14 is used to actively lock the cable 6 a second time by the sealing ring 4 and the locking nylon clamp. Step D: Press the two handles 8 to make the slider 19 slide in the slide groove 20, which will drive the two moving plates 21 to move and move closer to each other. As the two moving plates 21 move closer, they will stretch the two springs 18 and make the two limiting plates 22 move closer to each other at the same time. Step E: Then, insert the two adjacent limiting plates 22 into the limiting groove 2, release the handle 8, and as the spring 18 deforms, the elastic force drives the two moving plates 21 to move away from each other, so that the two limiting plates 22 are respectively engaged in the limiting groove 2, thus completing the installation of the polygonal metal bushing 5.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connector for a cable with a helical corrugated outer conductor, characterized in that: The system includes a connecting nut (1), inside which a cable (6) is disposed. The cable (6) extends into the connecting nut (1) and has a first thread (9) on its outer side. A polygonal metal bushing (5) for clamping the cable (6) is disposed inside the connecting nut (1) near the first thread (9). A sealing ring (4) and a locking nylon clip (3) for secondary locking of the cable (6) are disposed sequentially on the side of the connecting nut (1) away from the polygonal metal bushing (5). A third thread (12) adapted to the first thread (9) is disposed inside the polygonal metal bushing (5), and the polygonal metal bushing (5) is close to the sealing ring. (4) A groove (13) for engaging the sealing ring (4) is provided on one side, and multiple grooves (13) are provided in a circular array. Protrusions that are compatible with the grooves (13) are provided at equal intervals around the outer side of the sealing ring (4). A second thread (11) that is compatible with the first thread (9) is provided inside the sealing ring (4). The pitch and curvature of the first thread (9) are the same as the pitch and curvature of the second thread (11) and the third thread (12). The first thread (9), the second thread (11) and the third thread (12) fit together. A fixing rubber ring (1) is provided on the outer side of the section of the cable (6) located on the locking nylon clip (3). 4) The locking nylon clip (3) is located on the outside of the fixing rubber ring (14), and the locking nylon clip (3) limits and fixes the fixing rubber ring (14). The connecting nut (1) and the cable (6) are arranged in a left-right sequence with a first wedge block (15) and a second wedge block (16) to increase the pressure of the connecting nut (1) on the cable (6). The polygonal metal bushing (5) is provided with a base (23) on the side away from the sealing ring (4). The base (23) is provided with an installation groove (17) on the side near the polygonal metal bushing (5). Springs (18) are installed on both sides of the installation groove (17). The two springs (18) face each other. Each is connected to a movable plate (21), which extends through the mounting groove (17) to the outside of the mounting groove (17) and is connected to a limiting plate (22). A sliding groove (20) is provided in the mounting groove (17), and a slider (19) slides along the length of the sliding groove (20). The slider (19) is connected to the movable plate (21). A strip groove (7) connected to the mounting groove (17) is provided on the side of the base (23) away from the mounting groove (17). A handle (8) is provided on the side of the movable plate (21) near the strip groove (7). A limiting groove (2) adapted to the limiting block is provided on the side of the connecting nut (1) near the limiting block.

2. A method of using a connector for a cable with a spirally corrugated outer conductor as described in claim 1, characterized in that: Includes the following steps, Step (A): First, a fixing rubber ring (14) is fitted on the outside of the end of the cable (6) with the first thread (9). Then, the end of the cable (6) with the first thread (9) is inserted into the connecting nut (1) and passed through the locking nylon clip, sealing ring (4) and polygonal metal bushing (5) in sequence. Step (B): When the cable passes through the locking nylon clip (3), the locking nylon clip abuts against the fixing rubber ring (14) to fix the fixing rubber ring (14). Then, the polygonal metal bushing (5) is brought closer to the connecting nut (1) so that the boss (10) on the outside of the sealing ring (4) is engaged in the groove (13). Step (C): The cable (6) is wrapped by a fixed rubber ring (14) and a locking nylon clamp. Both ends are clamped by a polygonal metal bushing (5) and a connecting nut (1) respectively. The space between the polygonal metal bushing (5) and the connecting nut (1) is compressed by the thread of the connecting nut (1). The friction coefficient of the fixed rubber ring (14) is used to actively lock the cable (6) a second time by using a sealing ring (4) and a locking nylon clamp. Step (D): Press the two handles (8) to make the slider (19) slide in the groove (20), which will drive the two moving plates (21) to move and move closer to each other. As the two moving plates (21) move closer, they will stretch the two springs (18) and make the two limiting plates (22) move closer to each other at the same time. Step (E), then insert the two adjacent limiting plates (22) into the limiting groove (2), release the handle (8), and as the spring (18) deforms, the elastic force drives the two moving plates (21) to move away from each other, so that the two limiting plates (22) are respectively locked into the limiting groove (2), and the installation of the polygonal metal bushing (5) is completed.

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