RVV cable assembly and cable assembly assembling method

Abstract

The invention relates to the technical field of RVV cable assemblies, in particular to an RVV cable assembly and an assembling method of the RVV cable assembly, the RVV cable assembly comprises an RVV cable body, the RVV cable body is provided with two symmetrically-arranged fixing assemblies, the two fixing assemblies are clamped through an assembling assembly, each fixing assembly comprises a beam barrel, a screw rod is rotatably installed on the inner wall of each beam barrel, and the screw rod is connected with the assembling assembly. A clamping assembly, a wire clamping assembly, a sealing assembly and a terminal module are sequentially arranged on the inner wall of each bundle cylinder from back to front, and each assembling assembly comprises an outer screw sleeve rotationally arranged on one bundle cylinder in a sleeving mode and an inner screw cylinder fixedly arranged on the other bundle cylinder. The RVV cable assembly has the beneficial effects that the holding and clamping assembly, the wire clamping assembly, the sealing assembly and the terminal module are integrated in the beam cylinder, so that the integrated design of multiple functions of the RVV cable assembly is realized, the overall space occupation is effectively reduced through the integrated design, and the structure of the RVV cable assembly is more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of RVV cable assemblies, in particular to an RVV cable assembly and an assembling method of the cable assembly. Background Art

[0002] As a multi-core flexible sheathed cable, the component connection reliability and modular installation efficiency of RVV cable directly affect the long-term stability of the electrical system.

[0003] Traditional cable assemblies (such as CN211530716U) use a threaded press-fit structure to fix the connectors. However, in dynamic scenarios such as drag chain systems and mobile equipment, the one-way thread locking mechanism has serious defects: first, the thread pair is prone to slight rotation under vibration conditions, resulting in increased contact resistance or even power failure; second, when multi-core cables are installed, there is a lack of branching and positioning structures, and the disordered twisting of the cores can easily cause local stress concentration and accelerate the wear of the insulation layer.

[0004] Although improved drag chain cables (such as the TRVV model) have improved their bending resistance by optimizing the lay pitch, their installation structure still has obvious shortcomings: 1) The existing sealing solution (CN114530723A) uses static rubber ring crimping, which cannot adapt to the wear of the sealing interface caused by frequent plugging and unplugging, and is prone to creepage failures in humid environments; 2) Terminal crimping and cable fixing are performed in steps (CN114583548A), resulting in low installation efficiency and difficulty in ensuring the accuracy of multi-core synchronous alignment.

[0005] Existing technologies generally adopt a split functional module design, where components such as clamps, sealing rings, and terminal blocks are installed independently, which not only takes up a large space, but also makes it difficult to coordinate the timing of the actions of various functional components. For example, when the terminal is crimped first and then the cable is locked, the wire core rebounds and easily causes poor contact; while locking the cable first makes it difficult to align the terminal. This structural contradiction seriously restricts the efficiency of cable installation in scenarios such as high-density electrical cabinets.

[0006] Therefore, there is an urgent need for an RVV cable assembly and an assembly method for a cable assembly that integrates cable fixation, wire core positioning, dynamic sealing and synchronous crimping functions in a limited space, so as to fundamentally solve the technical bottlenecks existing in the traditional installation process, such as poor coordination, weak vibration resistance and insufficient environmental adaptability. Summary of the invention

[0007] In view of the technical problems existing in the prior art, the present invention provides an RVV cable assembly and an assembly method of a cable assembly to solve the problems that the existing cable assemblies are prone to reverse rotation in a vibration environment, resulting in connection failure, lack of modular assembly structure, and the existing cables are not convenient for realizing a multifunctional integrated design.

[0008] The technical solution of the present invention to solve the above technical problems is as follows: an RVV cable assembly, comprising an RVV cable body, the RVV cable body is provided with two symmetrically arranged fixing assemblies, the two fixing assemblies are clamped by an assembly assembly, the fixing assembly comprises a bundle tube, a wire rod is rotatably installed on the inner wall of the bundle tube, and a clamping assembly, a wire clamping assembly, a sealing assembly and a terminal module are installed in sequence from back to front on the inner wall of the bundle tube; The assembly component includes an outer screw sleeve rotatably mounted on one bundle cylinder and an inner screw barrel fixedly mounted on the other bundle cylinder. A one-way locking component is provided at the meshing point between the outer screw sleeve and the inner screw barrel. A group of inner terminals are fixedly mounted on the inner wall of one bundle cylinder. An outer end barrel plugged into the inner terminal is mounted on the inner wall of the other bundle cylinder at a position corresponding to each inner terminal. The inner terminal and the outer end barrel are electrically connected to two terminal modules respectively. The outer screw sleeve is linked to the two lead screws through a linkage component.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the clamping assembly includes a first transmission section arranged on the screw rod, a driving seat is installed on the first transmission section, a group of clamps distributed in a circular array are hinged at the tail of the clamping tube, and a clamping arm is hinged between each clamp and the driving seat.

[0011] The beneficial effect of adopting the above further scheme is that, when in use, two bundle barrels are symmetrically installed on the RVV cable body, the outer screw sleeve and the inner screw barrel are clamped by assembling the components, the screw rod, the clamping assembly, the wire clamping assembly, the sealing assembly and the terminal module are sequentially installed in the bundle barrel, and the two screw rods are synchronously rotated by the synchronous disk and the gear set in the linkage assembly, and the inner terminal is driven to be plugged with the outer end barrel. Multiple functional modules such as clamping, wire clamping, sealing and terminals are integrated in the bundle barrel, which reduces space occupation, and synchronous locking is achieved through the linkage of the screw rod to ensure the stability of the electrical connection. The sealing assembly and the linkage assembly work together to prevent the external environment from corroding the inside of the RVV cable body; When the outer screw sleeve rotates, the driving seat moves. After the driving seat moves, it drives a set of clamps to clamp the RVV cable body. When the RVV cable body is clamped, the connection strength and stability between the bundle tube and the RVV cable body are effectively guaranteed.

[0012] Furthermore, the wire clamping assembly includes a group of clamping tubes distributed in a circular array and installed on the outer circumference of the bundle tube, the screw rod is respectively provided with a positive thread segment and a negative thread segment, and the positive thread segment and the negative thread segment are both transmission-mounted with a pair of clamping blocks, and the inner wall of the bundle tube and the position corresponding to the inner side of each clamping tube are slidably mounted with a wire pressing block, and the bottom surface of each wire pressing block is hinged with two support arms, and the other ends of the two support arms are respectively transmission-connected with the two clamping blocks.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that when the screw rotates, the clamping blocks on the positive thread section and the reverse thread section will move toward or away from each other. Since one end of the support arm is hinged to the bottom surface of the wire pressing block and the other end is transmission-connected to the clamping block, the movement of the clamping block drives the wire pressing block to slide on the inner wall of the bundle tube corresponding to the position on the inner side of the bundle tube through the transmission action of the support arm. When the outer sleeve rotates to rotate the screw, the clamping blocks move toward each other, and then the wire pressing blocks clamp the wire core of the RVV cable body. This clamping method can effectively prevent the wire core of the RVV cable body from loosening in the bundle tube, enhance the tightness of the connection between the wire core of the RVV cable body and the bundle tube, and ensure the stability of electrical signal transmission. For example, when the RVV cable body is vibrated or pulled by external force, the clamped wire core is not easy to shift, thereby avoiding problems such as poor contact and signal interruption caused by loose wire core, thereby improving the reliability of the RVV cable assembly.

[0014] Furthermore, the two terminal modules include a group of plug-in flashlights installed on the bundle tube, each of the plug-in flashlights has a terminal groove with an opening at the tail end, and a clamping column is slidably installed on the inner wall of each plug-in flashlight. A second transmission section is provided on the screw rod, and a pressure sleeve is transmission-installed on the second transmission section. An elastic pressure sleeve is slidably sleeved on the pressure sleeve, and a compression spring limited by the pressure sleeve is installed at the tail end of the elastic pressure sleeve. A connecting rod is hinged between the elastic pressure sleeve and each of the clamping columns, and the tail end of each of the inner terminal and the outer end tube is fixed to and electrically connected to a plug-in flashlight at the corresponding position.

[0015] The beneficial effect of adopting the above further scheme is that when the screw rotates, the second transmission section drives the pressure sleeve to move, and when the pressure sleeve moves forward, it squeezes the elastic compression sleeve, so that the elastic compression sleeve compresses the compression spring, and at the same time, the elastic compression sleeve drives the clamping column to slide in the plug-in flashlight through the connecting rod. When the inner terminal and the outer end tube are connected to the plug-in flashlight, the clamping column can tightly clamp the RVV cable body core. This tight clamping method ensures that the electrical connection between the RVV cable body core and the plug-in flashlight is tight and reliable, and reduces the contact resistance. Lower contact resistance can reduce the loss of electrical energy at the connection point and improve the efficiency of electrical transmission. At the same time, tight connection avoids safety hazards such as heating and sparking caused by loose connection, enhances the electrical performance and stability of the entire RVV cable assembly, and is suitable for application scenarios with high electrical safety requirements.

[0016] Furthermore, the linkage assembly includes a synchronization disk, an outer gear ring fixed to the inner wall of the outer screw sleeve, an inner gear ring fixed to a lead screw and a driven column fixed to another lead screw. A driven gear is rotatably sleeved on each of the inner terminals, and each of the driven gears simultaneously engages the inner gear ring and the outer gear ring. A group of synchronization rods distributed in a circular array are installed on the inner gear ring, and each of the synchronization rods is slidably connected to the synchronization disk. A clamping spring is installed between the synchronization disk and the inner gear ring, and the synchronization disk is clamped to the driven column through the clamping spring.

[0017] The beneficial effect of adopting the above further scheme is that when in use, when the outer screw sleeve is rotated to connect with the inner screw barrel, the outer gear ring rotates accordingly, and the outer gear ring and the driven gear are meshed with each other, thereby driving the driven gear to rotate, and the driven gear is in transmission connection with the inner gear ring, thereby causing the inner gear ring to rotate, and the synchronization rod on the inner gear ring slides in the synchronization disk, and the pressing spring presses the synchronization disk and the driven column tightly, so that the rotation of one screw rod can drive the other screw rod to rotate synchronously through the linkage assembly; During the assembly process of the RVV cable assembly, the synchronous actions of the functional components in the two bundle barrels are realized. For example, the clamping assembly simultaneously clamps the RVV cable body, the wire clamping assembly simultaneously presses the wire core, the sealing assembly simultaneously seals, and the terminal module simultaneously completes the accurate plug-in of the inner terminal and the outer end barrel; This synchronous action ensures the coordination and consistency of the movements of each component, improves assembly efficiency, reduces assembly time and labor costs, and at the same time ensures accurate insertion of the inner terminal and the outer end barrel, as well as effective fixation and sealing of the RVV cable body by each component, improving the overall quality and performance of the RVV cable assembly.

[0018] Furthermore, the end surface of the synchronous disk and the tail end of the driven column are both provided with friction lines.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that the friction texture can increase the friction between the synchronous disk and the driven column. When one screw rod drives another screw rod to rotate through the linkage assembly, power needs to be transmitted reliably between the synchronous disk and the driven column. The greater friction force can ensure that the power transmission between the synchronous disk and the driven column is more reliable and reduce the occurrence of slippage. If there is no friction texture, relative sliding may occur between the synchronous disk and the driven column during the rotation process, resulting in asynchronous rotation of the two screw rods, thereby affecting the coordinated work of the various functional components. After setting the friction texture, it is ensured that the two screw rods can rotate more accurately and synchronously, so that the various functional components in the two bundle tubes can work together more accurately, further improving the assembly quality and stability of the RVV cable assembly, and ensuring that the RVV cable assembly can operate normally under various working conditions.

[0020] Furthermore, the one-way locking assembly includes a locking pawl and a ratchet rotatably mounted on the inner screw barrel, the locking pawl is hinged on a clamping barrel arranged adjacent to the ratchet, a torsion spring is arranged at the hinge between the locking pawl and the clamping barrel, a toggle portion is arranged on the locking pawl, a group of limit rods distributed in a circular array are installed on the ratchet, and a slot adapted to the limit rod is provided inside the outer screw sleeve and corresponding to the position of each limit rod.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that when the outer screw sleeve is rotated to connect with the inner screw barrel, the ratchet rotates with the outer screw sleeve, and the locking claw is stuck in the tooth groove of the ratchet under the action of the torsion spring to form a one-way lock. During the normal use of the RVV cable assembly, it may be affected by factors such as vibration and external force pulling, and the one-way locking assembly can prevent the outer screw sleeve from accidentally reversing and loosening under these circumstances, which ensures that the connection between the outer screw sleeve and the inner screw barrel is always stable, ensures the reliable connection of the two bundle barrels, and thus ensures the stability and safety of the entire RVV cable assembly. For example, in some industrial equipment, the RVV cable assembly may vibrate with the operation of the equipment. If there is no one-way locking assembly, the outer screw sleeve may loosen, resulting in poor contact between the inner terminal and the outer terminal barrel, affecting the normal operation of the equipment. When disassembly is required, the locking claw can be disengaged from the tooth groove of the ratchet by toggling the toggle part to release the lock, which is convenient for maintenance and replacement of parts of the RVV cable assembly.

[0022] Furthermore, the sealing assembly comprises a sealing bag ring installed on the inner wall of the plug-in flashlight, an air bag is installed between the pressure sleeve and the clamp tube, and an air guide tube is installed between the air bag and each of the sealing bag rings.

[0023] The beneficial effect of adopting the above further scheme is that when the screw rotates to move the pressure sleeve, the pressure sleeve squeezes the airbag, and the gas in the airbag enters the sealing bag ring through the air guide tube, and the sealing bag ring is inflated to seal the wire core. In actual applications, the RVV cable assembly may be in a variety of different environments, such as a damp basement, a dusty factory workshop, etc. The sealing assembly can effectively prevent external dust, moisture, humidity, etc. from entering the interior of the bundle tube, avoiding erosion and damage to the wire core and electrical connection parts of the RVV cable body.

[0024] For example, moisture entering the bundle tube may cause the wire core to rust, increase contact resistance, and affect electrical signal transmission. Dust entering may cause faults such as short circuits in electrical connections. The sealing effect of the sealing component extends the service life of the RVV cable assembly, improves the reliability and stability of the RVV cable assembly in different environments, and ensures that the RVV cable assembly can work stably for a long time.

[0025] Furthermore, a group of wire cores are arranged on the RVV cable body, and a wire harness block which is clamped with the wire core is fixedly installed at the tail of the harness tube and at the position corresponding to each wire core.

[0026] The beneficial effect of adopting the above-mentioned further scheme is that the wiring block can effectively restrain and position the wire cores on the RVV cable body, so that the wire cores are arranged neatly, and the wire cores are prevented from being entangled or confused with each other outside the bundle tube. During the assembly process of the RVV cable assembly, the neatly arranged wire cores help the wire cores to be accurately connected to the plug-in flashlight, inner terminal, outer end tube and other components, thereby improving the accuracy and efficiency of assembly. For example, if the wire cores are entangled with each other, incorrect connection may occur during the connection process, resulting in the RVV cable assembly failing to work properly. At the same time, the wiring block can also protect the wire cores to a certain extent, reducing the possibility of damage to the wire cores by external pulling, squeezing, etc. When the RVV cable body is subjected to external tension, the wiring block can disperse the tension to prevent the wire cores from breaking due to excessive local force, thereby ensuring the reliability and stability of the RVV cable assembly.

[0027] A method for assembling an RVV cable assembly comprises the following steps: S1. Preparation: prepare the main components of the RVV cable assembly, including two fixed components and assembly components, ensure that all components are intact, and the moving parts such as the screw rod, threaded segment, linkage assembly, etc. are well lubricated; S2. Install the fixed assembly. Align the bundle barrels of the two fixed assemblies to ensure that the axes of the two bundle barrels coincide. Align the outer screw sleeve on one bundle barrel with the inner screw sleeve on the other bundle barrel. Preliminarily connect it with the inner screw sleeve by rotating the outer screw sleeve. Use the one-way locking assembly to ensure that the connection between the outer screw sleeve and the inner screw sleeve is stable to prevent loosening. When installing the fixed assembly, align the inner terminal in one bundle barrel with the outer end barrel in the other bundle barrel to ensure that the inner terminal can be smoothly inserted into the outer end barrel. By rotating the screw rod, use the linkage assembly to make the two screw rods rotate synchronously to push the inner terminal and the outer end barrel to be fully plugged in. When the outer screw sleeve rotates, the clamp assembly clamps the RVV cable body, the wire pressing block presses the wire core of the RVV cable body, the air guide tube inflates the sealing bag ring, and the sealing assembly completely seals the wire core; S3. Recheck to see if the electrical connection of the terminal module is stable and ensure that the electrical connection between the inner terminal and the outer terminal barrel and the plug-in barrel is reliable.

[0028] The beneficial effect of adopting the above further solution is that, when used, the assembly method has clear steps and standardized operation; The preparation work ensures the integrity of all components and good lubrication of moving parts, providing a reliable foundation for subsequent assembly. If there is damage to the components or poor lubrication of the moving parts, it may cause problems such as jamming and loose connections during the assembly process, affecting the quality and performance of the RVV cable assembly. The fixed component installation steps detail how to accurately connect the two fixed components, ensure a stable connection through a one-way locking component, use the linkage component to achieve synchronous movement of the functional components, ensure accurate insertion of the inner terminal and the outer end barrel, the clamping component holds the RVV cable body tightly, the wire clamping component presses the wire core, and the sealing component seals the wire core, etc.; This orderly assembly process ensures the assembly quality and performance of the RVV cable assembly, enabling the RVV cable assembly to meet the design requirements; The re-inspection step can timely discover whether there are any problems with the electrical connection of the terminal module, such as poor contact, looseness, etc. Timely discovery and resolution of these problems can further improve the reliability and safety of the RVV cable assembly and avoid failures during use; The whole assembly method improves assembly efficiency, reduces assembly error rate, enables RVV cable assemblies to work stably and reliably, and is suitable for large-scale production and use by operators of different technical levels.

[0029] The beneficial effects of the present invention are: 1) The present invention realizes the integrated design of multiple functions of RVV cable assembly by integrating the clamping assembly, wire clamping assembly, sealing assembly and terminal module into the bundle tube. This integrated design effectively reduces the overall space occupation and makes the structure of RVV cable assembly more compact. In practical applications, such as in some electrical equipment with high space requirements, the compact structure facilitates the installation and arrangement of RVV cable assembly, can better adapt to the limited installation space, and improves the utilization rate of the internal space of the equipment. At the same time, the present invention drives the clamping, wire clamping and terminal crimping assembly through the linkage assembly, combined with the ratchet one-way locking design, to solve the problems of high loosening rate and inconvenient disassembly and assembly of traditional RVV cable assembly. The modular plug-in flashlight and locking sleeve structure realizes the rapid branching and fixation of multi-core cables and high-reliability electrical connection.

[0030] 2) The present invention ensures the stability and reliability of the connection between the two fixed components by cooperating the outer screw sleeve and the inner screw barrel of the assembly component and the one-way locking component. During the use of the RVV cable assembly, it may be affected by factors such as vibration and external pulling. The one-way locking component can prevent the outer screw sleeve from accidentally reversing and loosening, ensuring that the connection is always firm. At the same time, the linkage component realizes the synchronous rotation of the two screws, driving the clamping component, the wire clamping component, the sealing component and the terminal module and other functional components to work together. This not only improves the efficiency of the RVV cable assembly assembly, reduces the assembly time and labor costs, but also ensures the coordination and consistency of the actions of the components, thereby improving the stability of the use of the RVV cable assembly and ensuring the reliability of the electrical connection.

[0031] 3) The present invention realizes effective sealing of the inside of the RVV cable body while completing the connection of the RVV cable body through the coordinated work of the sealing component and the linkage component. When the screw rotates to drive the various functional components to operate, the sealing component also works synchronously. Specifically, the pressure sleeve squeezes the air bag, and the gas enters the sealing bag ring through the air guide tube to expand it, thereby sealing the wire core. This sealing effect can prevent external dust, moisture, and humidity from entering the inside of the RVV cable body, avoiding erosion and damage to the wire core and electrical connection parts of the RVV cable body, such as in a humid basement or dusty factory environment. It can effectively extend the service life of the RVV cable assembly and improve its reliability in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of an RVV cable assembly of the present invention; Figure 2 It is a schematic diagram of the structure of the wire core and the outer end tube of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the local enlarged structure at point A in the middle; Figure 4 It is a schematic diagram of the structure of the clamp and the clamping tube of the present invention; Figure 5 For the present invention Figure 4 A schematic cross-sectional structure diagram of ; Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at B in the middle; Figure 7 For the present invention Figure 5 A schematic diagram of the local enlarged structure at C in the middle; Figure 8 It is a schematic diagram of the structure of the plug-in flashlight and the clamping tube of the present invention; Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at D in the middle; Fig.10 It is a schematic diagram of the structure of the ratchet and the inner screw barrel of the present invention; Fig.11 It is a schematic structural diagram of the outer gear ring and the outer screw sleeve of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. RVV cable body; 2. Bundle barrel; 3. Screw rod; 4. External screw sleeve; 5. Internal screw barrel; 6. Internal terminal; 7. External end barrel; 8. Drive seat; 9. Clamp; 10. Clamp arm; 11. Clamp barrel; 12. Clamp block; 13. Wire pressing block; 14. Support arm; 15. Plug flashlight; 16. Terminal slot; 17. Clamp column; 18. Pressure sleeve; 19. Elastic pressure sleeve; 20. Compression spring; 21. Connecting rod; 22. Synchronous disk; 23. External gear ring; 24. Internal gear ring; 25. Driven column; 26. Driven gear; 27. Synchronous rod; 28. Clamping spring; 29. ​​Locking claw; 30. Ratchet; 31. Limiting rod; 32. Sealing bag ring; 33. Air bag; 34. Wire core; 35. Bundle block. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] like Figure 1-11 As shown, an RVV cable assembly includes an RVV cable body 1, on which two symmetrically arranged fixing assemblies are provided, and the two fixing assemblies are clamped together by an assembly assembly; The fixing assembly includes a bundle tube 2; A group of wire cores 34 are arranged on the RVV cable body 1 , and a wire harness block 35 which is clamped with the wire core 34 is fixedly installed at the tail of the harness tube 2 and at the position corresponding to each wire core 34 .

[0036] The harness block 35 can effectively bind and position the wire cores 34 on the RVV cable body 1, so that the wire cores 34 are neatly arranged, and the wire cores 34 are prevented from being entangled or confused outside the harness tube 2. During the assembly process of the RVV cable assembly, the neatly arranged wire cores 34 help the wire cores 34 to be accurately connected to the plug-in tube 15, the inner terminal 6, the outer end tube 7 and other components, thereby improving the accuracy and efficiency of assembly; For example, if the wire cores 34 are entangled with each other, an incorrect connection may occur during the connection process, causing the RVV cable assembly to fail to work properly. At the same time, the harness block 35 can also protect the wire core 34 to a certain extent, reducing the possibility of the wire core 34 being damaged by external pulling, squeezing, etc. When the RVV cable body 1 is subjected to external tension, the harness block 35 can disperse the tension to prevent the wire core 34 from breaking due to excessive local force, thereby ensuring the reliability and stability of the RVV cable assembly; A wire rod 3 is rotatably mounted on the inner wall of the bundle tube 2, and a clamping assembly, a wire clamping assembly, a sealing assembly and a terminal module are sequentially mounted on the inner wall of the bundle tube 2 from back to front; The assembly assembly includes an outer screw sleeve 4 rotatably sleeved on one bundle barrel 2 and an inner screw barrel 5 fixedly mounted on the other bundle barrel 2, and a one-way locking assembly is provided at the meshing position between the outer screw sleeve 4 and the inner screw barrel 5; The clamping assembly includes a first transmission section arranged on the screw rod 3, on which a drive seat 8 is installed for transmission. A group of clamping pliers 9 distributed in a circular array are hinged at the tail of the clamping tube 2, and a clamping arm 10 is hinged between each clamping pliers 9 and the drive seat 8.

[0037] When in use, two bundle barrels 2 are symmetrically installed on the RVV cable body 1, and the outer screw sleeve 4 and the inner screw barrel 5 are clamped by assembling the components. The screw rod 3, the clamping assembly, the wire clamping assembly, the sealing assembly and the terminal module are installed in the bundle barrel 2 in sequence. The synchronous rotation of the two screw rods 3 is achieved through the synchronous disk 22 and the gear set in the linkage assembly, and the inner terminal 6 is driven to be plugged with the outer end barrel 7. Multiple functional modules such as clamping, wire clamping, sealing and terminals are integrated in the bundle barrel 2 to reduce space occupation. Synchronous locking is achieved through the linkage of the screw rod 3 to ensure the stability of the electrical connection. The sealing assembly and the linkage assembly work together to prevent the external environment from corroding the inside of the RVV cable body 1; When the outer screw sleeve 4 rotates, the driving seat 8 moves. After the driving seat 8 moves, it drives a group of clamps 9 to clamp the RVV cable body 1. When the RVV cable body 1 is clamped, the connection strength and stability between the bundle tube 2 and the RVV cable body 1 are effectively guaranteed.

[0038] The wire clamping assembly includes a group of clamping tubes 11 distributed in a circular array and installed on the outer circumference of the bundle tube 2. The screw rod 3 is respectively provided with a positive thread section and a negative thread section. A pair of clamping blocks 12 are transmission-mounted on the positive thread section and the negative thread section. A wire pressing block 13 is slidably installed on the inner wall of the bundle tube 2 and at a position corresponding to the inner side of each clamping tube 11. The bottom surface of each wire pressing block 13 is hinged with two support arms 14, and the other ends of the two support arms 14 are transmission-connected to the two clamping blocks 12 respectively.

[0039] When the screw rod 3 rotates, the clamping blocks 12 on the positive thread section and the negative thread section will move toward or away from each other. Since one end of the support arm 14 is hinged to the bottom surface of the wire pressing block 13 and the other end is transmission-connected to the clamping block 12, the movement of the clamping block 12 is driven by the transmission of the support arm 14 to drive the wire pressing block 13 to slide on the inner wall of the bundle tube 2 corresponding to the inner side of the bundle tube 2. When the outer screw sleeve 4 rotates to rotate the screw rod 3, the clamping blocks 12 move toward each other, and then the pressing block 13 presses the wire core 34 of the RVV cable body 1. This pressing method can effectively prevent the wire core 34 of the RVV cable body 1 from loosening in the bundle tube 2, enhance the tightness of the connection between the wire core 34 of the RVV cable body 1 and the bundle tube 2, and ensure the stability of electrical signal transmission; For example, when the RVV cable body 1 is vibrated or pulled by external force, the compressed core 34 is not easily displaced, thereby avoiding problems such as poor contact and signal interruption caused by loose core 34, and improving the reliability of the RVV cable assembly.

[0040] The two terminal modules include a group of plug-in flashlights 15 installed on the bundle tube 2, each of which has a terminal groove 16 with an opening at the rear end, and a clamping column 17 slidably installed on the inner wall of each plug-in flashlight 15. A second transmission section is provided on the screw rod 3, and a pressure sleeve 18 is transmission-installed on the second transmission section. An elastic pressing sleeve 19 is slidably sleeved on the pressure sleeve 18, and a compression spring 20 limited by the pressure sleeve 18 is installed at the rear end of the elastic pressing sleeve 19. A connecting rod 21 is hinged between the elastic pressing sleeve 19 and each clamping column 17, and the rear ends of each inner terminal 6 and the outer end tube 7 are fixed to and electrically connected to a plug-in flashlight 15 at the corresponding position.

[0041] When the screw rod 3 rotates, the second transmission section drives the pressure sleeve 18 to move. When the pressure sleeve 18 moves forward, it squeezes the elastic pressing sleeve 19, causing the elastic pressing sleeve 19 to compress the compression spring 20. At the same time, the elastic pressing sleeve 19 drives the clamping column 17 to slide in the plug-in flashlight 15 through the connecting rod 21. When the inner terminal 6 and the outer end tube 7 are connected to the plug-in torch 15, the clamping column 17 can tightly clamp the wire core 34 of the RVV cable body 1. This tight clamping method ensures that the electrical connection between the wire core 34 of the RVV cable body 1 and the plug-in torch 15 is tight and reliable, reducing the contact resistance; Lower contact resistance can reduce the loss of electric energy at the connection part and improve the efficiency of electric transmission. At the same time, the tight connection avoids the potential safety hazards such as heating and sparking caused by loose connection, and enhances the electrical performance and stability of the entire RVV cable assembly, which is suitable for application scenarios with high requirements for electrical safety. A group of inner terminals 6 are fixedly installed on the inner wall of one bundle tube 2, and an outer end tube 7 plugged into the inner terminal 6 is installed on the inner wall of the other bundle tube 2 and at the position corresponding to each inner terminal 6. The inner terminal 6 and the outer end tube 7 are electrically connected to the two terminal modules respectively, and the outer screw sleeve 4 is linked with the two screw rods 3 through a linkage assembly.

[0042] The linkage assembly includes a synchronous disk 22, an outer gear ring 23 fixed to the inner wall of the outer screw sleeve 4, an inner gear ring 24 fixed to a lead screw 3 and a driven column 25 fixed to another lead screw 3. A driven gear 26 is rotatably sleeved on each inner terminal 6. Each driven gear 26 simultaneously engages the inner gear ring 24 and the outer gear ring 23. A group of synchronous rods 27 distributed in a circular array are installed on the inner gear ring 24. Each synchronous rod 27 is slidably connected to the synchronous disk 22. A tightening spring 28 is installed between the synchronous disk 22 and the inner gear ring 24. The synchronous disk 22 is tightened to the driven column 25 through the tightening spring 28.

[0043] When in use, when the outer screw sleeve 4 rotates and connects with the inner screw barrel 5, the outer gear ring 23 rotates accordingly, and the outer gear ring 23 and the driven gear 26 are meshed with each other, thereby driving the driven gear 26 to rotate, and the driven gear 26 is in transmission connection with the inner gear ring 24, thereby causing the inner gear ring 24 to rotate; The synchronization rod 27 on the inner gear ring 24 slides in the synchronization disk 22, and the pressing spring 28 presses the synchronization disk 22 against the driven column 25, so that the rotation of one screw rod 3 can drive the other screw rod 3 to rotate synchronously through the linkage assembly; During the assembly process of the RVV cable assembly, the synchronous actions of the functional components in the two bundle barrels 2 are realized. For example, the clamping component simultaneously clamps the RVV cable body 1, the wire clamping component simultaneously presses the wire core 34, the sealing component simultaneously seals, and the terminal module simultaneously completes the accurate plugging of the inner terminal 6 and the outer end barrel 7; This synchronous action ensures the coordination and consistency of the actions of each component, improves assembly efficiency, reduces assembly time and labor costs, and at the same time ensures accurate insertion of the inner terminal 6 and the outer terminal tube 7, as well as effective fixation and sealing of the RVV cable body 1 by each component, thereby improving the overall quality and performance of the RVV cable assembly.

[0044] The end surface of the synchronous disc 22 and the tail end of the driven column 25 are both provided with friction lines.

[0045] The friction pattern can increase the friction between the synchronization disk 22 and the driven column 25. When one screw rod 3 drives the other screw rod 3 to rotate through the linkage assembly, power needs to be reliably transmitted between the synchronization disk 22 and the driven column 25. The greater friction can ensure that the power transmission between the synchronization disk 22 and the driven column 25 is more reliable and reduce the occurrence of slippage. If there is no friction pattern, relative sliding may occur between the synchronization disk 22 and the driven column 25 during the rotation process, resulting in asynchronous rotation of the two screw rods 3, thereby affecting the coordinated work of the various functional components. After setting the friction pattern, it is ensured that the two screw rods 3 can rotate more accurately and synchronously, so that the various functional components in the two bundle tubes 2 can work together more accurately, further improving the assembly quality and stability of the RVV cable assembly, and ensuring that the RVV cable assembly can operate normally under various working conditions.

[0046] The one-way locking assembly includes a locking claw 29 and a ratchet 30 rotatably mounted on the inner screw barrel 5. The locking claw 29 is hinged on the clamping barrel 2 arranged adjacent to the ratchet 30. A torsion spring is arranged at the hinge between the locking claw 29 and the clamping barrel 2. A toggle portion is arranged on the locking claw 29. A group of limit rods 31 distributed in a circular array are installed on the ratchet 30. A slot adapted to the limit rod 31 is provided inside the outer screw sleeve 4 and corresponding to the position of each limit rod 31.

[0047] When the outer screw sleeve 4 is rotated to connect with the inner screw barrel 5, the ratchet 30 rotates with the outer screw sleeve 4, and the locking claw 29 is clamped in the tooth groove of the ratchet 30 under the action of the torsion spring to form a one-way lock. During the normal use of the RVV cable assembly, it may be affected by factors such as vibration and external force, and the one-way locking assembly can prevent the outer screw sleeve 4 from accidentally reversing and loosening under these circumstances, which ensures that the connection between the outer screw sleeve 4 and the inner screw barrel 5 is always stable, ensures the reliable connection of the two bundle barrels 2, and thus ensures the stability and safety of the entire RVV cable assembly; For example, in some industrial equipment, the RVV cable assembly may vibrate as the equipment runs. If there is no one-way locking assembly, the outer screw sleeve 4 may loosen, resulting in poor contact between the inner terminal 6 and the outer end tube 7, affecting the normal operation of the equipment. When disassembly is required, the lock can be released by toggling the toggle part to disengage the locking claw 29 from the tooth groove of the ratchet 30, making it convenient for maintenance and replacement of parts of the RVV cable assembly.

[0048] The sealing assembly includes a sealing bag ring 32 installed on the inner wall of the plug-in flashlight 15, an air bag 33 is installed between the pressure sleeve 18 and the clamp tube 2, and an air guide tube is installed between the air bag 33 and each sealing bag ring 32.

[0049] When the screw rod 3 rotates to move the pressure sleeve 18 , the pressure sleeve 18 squeezes the airbag 33 , and the gas in the airbag 33 enters the sealing bag ring 32 through the air guide tube. The sealing bag ring 32 is inflated to seal the wire core 34 .

[0050] In actual applications, RVV cable assemblies may be in various environments, such as damp basements, dusty factory workshops, etc. The sealing assembly can effectively prevent external dust, moisture, and humidity from entering the bundle tube 2, thereby avoiding erosion and damage to the wire core 34 and electrical connection parts of the RVV cable body 1. For example, moisture entering the bundle tube 2 may cause the wire core 34 to rust, increase contact resistance, and affect electrical signal transmission. Dust entering may cause faults such as short circuits at electrical connection parts. The sealing effect of the sealing assembly extends the service life of the RVV cable assembly, improves the reliability and stability of the RVV cable assembly in different environments, and ensures that the RVV cable assembly can work stably for a long time.

[0051] A method for assembling an RVV cable assembly comprises the following steps: S1. Preparation: prepare the main components of the RVV cable assembly, including two fixed components and assembly components, ensure that all components are intact, and the moving parts such as the screw rod 3, threaded segment, linkage assembly, etc. are well lubricated; S2, installation of the fixed assembly, align the bundle tubes 2 of the two fixed assemblies to ensure that the axes of the two bundle tubes 2 coincide, align the outer screw sleeve 4 on one bundle tube 2 with the inner screw sleeve 5 on the other bundle tube 2, and preliminarily connect it with the inner screw sleeve 5 by rotating the outer screw sleeve 4, and use a one-way locking assembly to ensure that the connection between the outer screw sleeve 4 and the inner screw sleeve 5 is firm to prevent loosening. When installing the fixed assembly, align the inner terminal 6 in one bundle tube 2 with the outer end tube 7 in the other bundle tube 2 to ensure that the inner terminal 6 can be smoothly inserted into the outer end tube 7, and by rotating the screw rod 3, the two screw rods 3 are rotated synchronously by using the linkage assembly to push the inner terminal 6 and the outer end tube 7 to be fully plugged in. When the outer screw sleeve 4 rotates, the clamping assembly clamps the RVV cable body 1, the wire pressing block 13 presses the wire core 34 of the RVV cable body 1, the air guide tube inflates the sealing bag ring 32, and the sealing assembly completely seals the wire core 34; S3, re-check whether the electrical connection of the terminal module is stable, and ensure that the electrical connection between the inner terminal 6 and the outer end tube 7 and the plug-in tube 15 is reliable.

[0052] When in use, the assembly method has clear steps and standardized operation; The preparation work ensures the integrity of all components and good lubrication of moving parts, providing a reliable foundation for subsequent assembly; If there is damage to the components or poor lubrication of the moving parts, it may cause problems such as jamming and loose connections during assembly, affecting the quality and performance of the RVV cable body 1 assembly; The installation steps of the fixing components describe in detail how to accurately connect the two fixing components, ensure the connection is stable through the one-way locking component, use the linkage component to achieve the synchronous action of each functional component, ensure the accurate plugging of the inner terminal 6 and the outer end tube 7, the clamping component clamps the RVV cable body 1, the wire clamping component presses the wire core 34, and the sealing component seals the wire core 34, etc.; This orderly assembly process ensures the assembly quality and performance of the RVV cable body 1 component, so that the RVV cable body 1 component can meet the design requirements. The re-inspection step can promptly detect whether there are any problems with the electrical connection of the terminal module, such as poor contact, looseness, etc. Timely detection and resolution of these problems can further improve the reliability and safety of the RVV cable body 1 component and avoid failures during use.

[0053] The entire assembly method improves assembly efficiency, reduces assembly error rate, enables the RVV cable body 1 assembly to work stably and reliably, and is suitable for large-scale production and use by operators of different technical levels.

[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An RVV cable assembly, comprising an RVV cable body (1), wherein the RVV cable body (1) is provided with two symmetrically arranged fixing assemblies, wherein the two fixing assemblies are clamped together by an assembly assembly, and wherein: The fixing assembly comprises a cable tie (2), a wire rod (3) being rotatably mounted on the inner wall of the cable tie (2), and a clamping assembly, a wire clamping assembly, a sealing assembly and a terminal module being mounted on the inner wall of the cable tie (2) in sequence from back to front; The assembly component comprises an outer screw sleeve (4) rotatably sleeved on one bundle cylinder (2) and an inner screw sleeve (5) fixedly mounted on the other bundle cylinder (2); a one-way locking component is provided at the meshing position of the outer screw sleeve (4) and the inner screw sleeve (5); a group of inner terminals (6) are fixedly mounted on the inner wall of one bundle cylinder (2); an outer end cylinder (7) plugged into the inner terminal (6) is mounted on the inner wall of the other bundle cylinder (2) at a position corresponding to each inner terminal (6); the inner terminal (6) and the outer end cylinder (7) are electrically connected to two terminal modules respectively; and the outer screw sleeve (4) is linked to the two screw rods (3) via a linkage component.

2. The RVV cable assembly according to claim 1, characterized in that: The clamping assembly comprises a first transmission section arranged on a screw rod (3), a driving seat (8) being transmission-mounted on the first transmission section, a group of clamping pliers (9) distributed in a circular array being hingedly connected to the tail of the clamping tube (2), and a clamping arm (10) being hingedly connected between each of the clamping pliers (9) and the driving seat (8).

3. The RVV cable assembly according to claim 1, characterized in that: The wire clamping assembly comprises a group of clamping tubes (11) distributed in a circumferential array and installed on the outer circumference of the bundle tube (2), the screw rod (3) is respectively provided with a positive thread section and a negative thread section, and a pair of clamping blocks (12) are both transmission-mounted on the positive thread section and the negative thread section, and a wire pressing block (13) is slidably mounted on the inner wall of the bundle tube (2) and at a position corresponding to the inner side of each clamping tube (11), and the bottom surface of each wire pressing block (13) is hinged with two support arms (14), and the other ends of the two support arms (14) are respectively transmission-connected to the two clamping blocks (12).

4. The RVV cable assembly according to claim 1, characterized in that: The two terminal modules include a group of plug-in flashlights (15) mounted on the bundle tube (2), each of the plug-in flashlights (15) having a terminal slot (16) with an opening at the rear end, a clamping column (17) slidably mounted on the inner wall of each plug-in flashlight (15), a second transmission section is arranged on the screw rod (3), a pressure sleeve (18) is slidably mounted on the second transmission section, an elastic pressure sleeve (19) is slidably mounted on the pressure sleeve (18), a compression spring (20) limited by the pressure sleeve (18) is mounted at the rear end of the elastic pressure sleeve (19), a connecting rod (21) is hinged between the elastic pressure sleeve (19) and each of the clamping columns (17), and the rear ends of each of the inner terminal (6) and the outer end tube (7) are fixed to and electrically connected to a plug-in flashlight (15) at a corresponding position.

5. The RVV cable assembly according to claim 1, characterized in that: The linkage assembly comprises a synchronous disk (22), an outer gear ring (23) fixed to the inner wall of the outer screw sleeve (4), an inner gear ring (24) fixed to a lead screw (3), and a driven column (25) fixed to another lead screw (3); each of the inner terminals (6) is rotatably sleeved with a driven gear (26); each of the driven gears (26) simultaneously meshes with the inner gear ring (24) and the outer gear ring (23); a group of synchronous rods (27) distributed in a circumferential array are mounted on the inner gear ring (24); each of the synchronous rods (27) is slidably connected to the synchronous disk (22); a clamping spring (28) is mounted between the synchronous disk (22) and the inner gear ring (24); the synchronous disk (22) is clamped against the driven column (25) by the clamping spring (28).

6. The RVV cable assembly according to claim 5, characterized in that: The end surface of the synchronous disk (22) and the tail end of the driven column (25) are both provided with friction patterns.

7. The RVV cable assembly according to claim 1, characterized in that: The one-way locking assembly comprises a locking claw (29) and a ratchet (30) rotatably sleeved on the inner screw barrel (5); the locking claw (29) is hinged on a clamping barrel (2) arranged adjacent to the ratchet (30); a torsion spring is arranged at the hinge between the locking claw (29) and the clamping barrel (2); a toggle portion is arranged on the locking claw (29); a group of limiting plug rods (31) distributed in a circular array are installed on the ratchet (30); and a slot adapted to the limiting plug rod (31) is provided inside the outer screw sleeve (4) and at a position corresponding to each limiting plug rod (31).

8. The RVV cable assembly according to claim 4, characterized in that: The sealing assembly comprises a sealing bag ring (32) mounted on the inner wall of the plug-in flashlight (15), an air bag (33) is mounted between the pressure sleeve (18) and the bundle tube (2), and an air guide tube is provided between the air bag (33) and each of the sealing bags (32).

9. The RVV cable assembly according to claim 1, characterized in that: The RVV cable body (1) is provided with a group of wire cores (34), and a wire harness block (35) that is clamped with the wire core (34) is fixedly installed at the tail of the harness tube (2) and at the position corresponding to each wire core (34).

10. An assembly method of an RVV cable assembly, based on an RVV cable assembly according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Preparation: prepare the main components of the RVV cable assembly, including two fixed components and assembly components, and ensure that all components are intact and that the moving parts such as the screw rod (3), threaded segment, linkage assembly, etc. are well lubricated; S2. Install the fixing assembly. Align the two fixing assembly's tubes (2) to ensure that the axes of the two tubes (2) coincide. Align the outer threaded sleeve (4) on one tube (2) with the inner threaded sleeve (5) on the other tube (2). Preliminarily connect the outer threaded sleeve (4) with the inner threaded sleeve (5) by rotating it. Use a one-way locking assembly to ensure that the connection between the outer threaded sleeve (4) and the inner threaded sleeve (5) is secure and prevented from loosening. When installing the fixing assembly, align the inner terminal (6) in one tube (2) with the inner terminal (6) in the other tube (2). The inner and outer end tubes (7) are aligned to ensure that the inner terminal (6) can be smoothly inserted into the outer end tube (7), and the two screw rods (3) are rotated by using the linkage assembly to rotate synchronously, so as to push the inner terminal (6) and the outer end tube (7) to be fully plugged in. When the outer screw sleeve (4) rotates, the clamping assembly clamps the RVV cable body (1), the wire pressing block (13) presses the wire core (34) of the RVV cable body (1), the air guide tube inflates the sealing bag ring (32), and the sealing assembly completely seals the wire core (34); S3, re-checking to check whether the electrical connection of the terminal module is stable, and ensuring that the electrical connection between the inner terminal (6) and the outer end tube (7) and the plug-in tube (15) is reliable.

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