An RVV cable assembly and an assembly method for the cable assembly

Abstract

The present invention relates to the technical field of RVV cable assemblies, and specifically to an RVV cable assembly and an assembly method thereof. It includes an RVV cable body, on which there are two symmetrically arranged fixing components. The two fixing components are clamped by an assembly component. The fixing component includes a beam tube, and a lead screw is rotatably installed on the inner wall of the beam tube. On the inner wall of the beam tube, a clamping component, a wire clamping component, a sealing component and a terminal module are installed in sequence from back to front. The assembly component includes an external screw sleeve rotatably sleeved on one beam tube and an internal screw tube fixedly installed on the other beam tube. The beneficial effect of the present invention is that by integrating the clamping component, the wire clamping component, the sealing component and the terminal module into the beam tube, the integrated design of multiple functions of the RVV cable assembly is realized. This integrated design effectively reduces the overall space occupation and makes the structure of the RVV cable assembly more compact.

Description

Technical Field

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

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

[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 devices, the single-direction threaded locking mechanism has serious defects: First, under vibration conditions, the thread pair is prone to undergo small-amplitude rotation, resulting in an increase in contact resistance or even power-off; Second, when installing multi-core cables, there is a lack of wire separation and positioning structure, and the wire cores are prone to be disorderly stranded, which 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 anti-bending performance by optimizing the lay length, their installation structure still has obvious shortcomings: 1) The existing sealing solution (CN114530723A) uses a static rubber ring press-fit, which cannot adapt to the wear of the sealing interface caused by frequent plugging and unplugging, and is prone to creepage faults in humid environments; 2) The terminal crimping and cable fixing are performed separately (CN114583548A), resulting in low installation efficiency and difficulty in ensuring the multi-core synchronous alignment accuracy.

[0005] The prior art generally adopts a split functional module design, and components such as clamps, sealing rings, and terminal seats are installed independently. This not only occupies a large amount of space but also makes it difficult to coordinate the action timing of each functional component. For example, when the terminals are crimped first and then the cable is locked, the wire cores are prone to rebound, resulting in poor contact; while locking the cable first makes it difficult to align the terminals. This structural contradiction severely restricts the cable installation efficiency in scenarios such as high-density electrical cabinets.

[0006] Therefore, there is an urgent need for an RVV cable assembly and an assembly method thereof to integrate functions such as cable fixing, wire core positioning, dynamic sealing, and synchronous crimping in a limited space, and fundamentally solve the technical bottlenecks such as poor coordination, weak anti-vibration ability, and insufficient environmental adaptability existing in traditional installation processes. 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 thereof to solve the problems that existing cable assemblies are prone to reverse rotation under vibration conditions, resulting in connection failure, lack of a modular assembly structure, and the existing cables are not convenient for realizing an integrated design of multiple functions.

[0008] The technical solution of the present invention to solve the above technical problems is as follows: An RVV cable assembly includes an RVV cable body, on which two symmetrically arranged fixing components are provided, and the two fixing components are clamped by an assembling component. The fixing component includes a beam tube, on the inner wall of which a lead screw is rotatably installed. From the back to the front, a clamping component, a wire clamping component, a sealing component, and a terminal module are sequentially installed on the inner wall of the beam tube;

[0009] The assembling component includes an outer screw sleeve rotatably sleeved on one beam tube and an inner screw cylinder fixedly installed on the other beam tube. A one-way locking component is provided at the meshing part of the outer screw sleeve and the inner screw cylinder. A group of inner terminals are fixedly installed on the inner wall of one beam tube, and outer end cylinders inserted with the inner terminals are installed at the positions corresponding to each inner terminal on the inner wall of the other beam tube. The inner terminals and the outer end cylinders are respectively electrically connected to the two terminal modules, and the outer screw sleeve is linked with the two lead screws through a linkage component.

[0010] On the basis of the above technical solution, the present invention can be further improved as follows.

[0011] Further, the clamping component includes a first transmission section arranged on the lead screw, on which a driving seat is drivingly installed. A group of clamping pliers distributed in a circumferential array are hinged at the tail of the beam tube, and a tightening arm is hinged between each clamping plier and the driving seat.

[0012] The beneficial effect of adopting the above further solution is that during use, two beam tubes are symmetrically installed on the RVV cable body. The outer screw sleeve and the inner screw cylinder are clamped through the assembling component. A lead screw, a clamping component, a wire clamping component, a sealing component, and a terminal module are sequentially installed in the beam tube. The two lead screws are synchronously rotated through the synchronous disk and the gear group in the linkage component to drive the insertion of the inner terminal and the outer end cylinder. Multiple functional modules such as clamping, wire clamping, sealing, and terminals are integrated in the beam tube, reducing space occupation. Synchronous locking is achieved through the linkage of the lead screws to ensure the stability of the electrical connection. The sealing component and the linkage component work together to prevent the external environment from eroding the inside of the RVV cable body;

[0013] When the outer screw sleeve rotates, the driving seat moves. After the driving seat moves, it then drives a group of clamping pliers to tightly hold the RVV cable body. When the RVV cable body is tightly held, the connection strength and connection stability between the beam tube and the RVV cable body are effectively guaranteed.

[0014] Further, the wire clamping assembly includes a group of clamping cylinders that are circumferentially arrayed and installed on the outer periphery of the beam tube. The lead screw is respectively provided with a positive thread section and a reverse thread section. A pair of clamping blocks are drivingly installed on both the positive thread section and the reverse thread section. A wire pressing block is slidably installed on the inner wall of the beam tube at a position corresponding to the inner side of each clamping cylinder. 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 drivingly connected to the two pairs of clamping blocks.

[0015] The beneficial effect of adopting the above further solution is that when the lead screw rotates, the clamping blocks on the positive thread section and the reverse thread section will move towards 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 drivingly connected to the clamping block, the movement of the clamping block drives the wire pressing block to slide on the inner wall of the beam tube at a position corresponding to the inner side of the beam tube through the transmission of the support arm. When the outer sleeve rotates to make the lead screw rotate, the clamping blocks move towards each other, and then the wire pressing block presses the core of the RVV cable body. This pressing method can effectively prevent the core of the RVV cable body from loosening in the beam tube, enhance the connection tightness between the core of the RVV cable body and the beam tube, and ensure the stability of electrical signal transmission. For example, when the RVV cable body is vibrated or pulled by an external force, the pressed core is not easily displaced, avoiding problems such as poor contact and signal interruption caused by the loosening of the core, and improving the reliability of the RVV cable assembly.

[0016] Further, the two terminal modules include a group of plug-in cylinders installed on the beam tube. Each plug-in cylinder is internally provided with a terminal slot with an open end at the tail. A clamping column is slidably installed on the inner wall of each plug-in cylinder. The lead screw is provided with a second transmission section, and a pressure sleeve is drivingly installed on the second transmission section. An elastic compression sleeve is slidably sleeved on the pressure sleeve. A compression spring limited by the pressure sleeve is installed at the tail of the elastic compression sleeve. A connecting rod is hinged between the elastic compression sleeve and each clamping column. The tails of each inner terminal and the outer end cylinder are fixed and electrically connected to a corresponding plug-in cylinder.

[0017] The beneficial effect of adopting the above further solution is that when the lead screw rotates, the second transmission section drives the pressure sleeve to move. When the pressure sleeve moves forward, it will squeeze the elastic compression sleeve, causing the elastic compression sleeve to compress the compression spring. At the same time, the elastic compression sleeve drives the clamping column to slide in the plug-in cylinder through the connecting rod. When the inner terminal and the outer end cylinder are connected to the plug-in cylinder, the clamping column can tightly clamp the core of the RVV cable body. This tight clamping method ensures a tight and reliable electrical connection between the core of the RVV cable body and the plug-in cylinder, reducing the contact resistance;

[0018] 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.

[0019] 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.

[0020] 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;

[0021] 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;

[0022] 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.

[0023] Furthermore, the end surface of the synchronous disk and the tail end of the driven column are both provided with friction lines.

[0024] 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.

[0025] 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 opened inside the outer screw sleeve and corresponding to the position of each limit rod.

[0026] 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.

[0027] 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.

[0028] The beneficial effects of adopting the above further solution are as follows. When the lead screw rotates to move the pressure sleeve, the pressure sleeve squeezes the drum airbag, and the gas in the drum airbag enters the sealing capsule ring through the air guide pipe. The sealing capsule ring is inflated and expanded to seal the wire core. In practical applications, the RVV cable assembly may be in various 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 inside of the beam tube, avoiding erosion and damage to the wire core and electrical connection parts of the RVV cable body.

[0029] For example, the entry of moisture into the inside of the beam tube may cause the wire core to rust, increase the contact resistance, and affect the transmission of electrical signals. The entry of dust may cause faults such as short circuits in the electrical connection parts. Through the sealing effect of the sealing assembly, the service life of the RVV cable assembly is extended, the reliability and stability of the RVV cable assembly in different environments are improved, and it is ensured that the RVV cable assembly can work stably for a long time.

[0030] Further, a group of wire cores are arranged on the RVV cable body, and wire binding blocks that are clamped with the wire cores are fixedly installed at the tail of the beam tube and corresponding to each wire core.

[0031] The beneficial effects of adopting the above further solution are as follows. The wire binding blocks can effectively bind and position the wire cores on the RVV cable body, making the wire cores arranged neatly, avoiding the wire cores from winding around each other or being in a mess outside the beam tube. During the assembly process of the RVV cable assembly, the neatly arranged wire cores contribute to the accurate connection of the wire cores with components such as the plug-in flashlight, the inner terminal, and the outer end tube, improving the accuracy and efficiency of the assembly. For example, if the wire cores are wound around each other, incorrect connections may occur during the connection process, resulting in the RVV cable assembly being unable to work properly. At the same time, the wire binding blocks can also protect the wire cores to a certain extent, reducing the possibility of the wire cores being damaged by external pulling, squeezing, etc. When the RVV cable body is subjected to external tensile force, the wire binding blocks can disperse the tensile force, avoiding the wire cores from breaking due to excessive local stress, ensuring the reliability and stability of the RVV cable assembly.

[0032] An assembly method for an RVV cable assembly includes the following steps:

[0033] S1. Preparation work, prepare the main components of the RVV cable assembly, including two fixing components and an assembly component, ensure that all components are intact, and the moving components such as the lead screw, the threaded section, and the linkage component are well lubricated;

[0034] 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;

[0035] 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.

[0036] The beneficial effect of adopting the above further solution is that, when used, the assembly method has clear steps and standardized operation;

[0037] 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.;

[0038] 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;

[0039] 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;

[0040] 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.

[0041] The beneficial effects of the present invention are:

[0042] 1) By integrating the clamping component, wire clamping component, sealing component and terminal module into the beam tube, the present invention realizes the integrated design of multiple functions of the RVV cable assembly. This integrated design effectively reduces the overall space occupation, makes the structure of the RVV cable assembly more compact. In practical applications, for example, in some electrical equipment with high space requirements, the compact structure facilitates the installation and layout of the RVV cable assembly, can better adapt to the limited installation space, 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 components through the linkage component, combined with the ratchet one-way locking design, to solve the problems of high loosening rate and inconvenient disassembly and assembly of the traditional RVV cable assembly. The modular plug-in flashlight and locking sleeve structure realize the rapid wire splitting and fixing of multi-core cables and high-reliability electrical connections.

[0043] 2) Through the cooperation of the outer screw sleeve and the inner screw barrel of the assembly component and the one-way locking component, the present invention ensures the stability and reliability of the connection of the two fixing components. During the use of the RVV cable assembly, it may be affected by factors such as vibration and external pulling force. 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 lead screws, driving the clamping component, wire clamping component, sealing component, terminal module and other functional components to work together. This not only improves the assembly efficiency of the RVV cable assembly, reduces the assembly time and labor costs, but also ensures the coordination and consistency of the actions of each component, thereby improving the stability of the RVV cable assembly during use and ensuring the reliability of the electrical connection.

[0044] 3) Through the coordinated work of the sealing component and the linkage component, the present invention realizes the effective sealing of the inside of the RVV cable body while completing the connection of the RVV cable body. When the lead screw rotates to drive the action of each functional component, the sealing component also plays a role synchronously. Specifically, the pressure sleeve squeezes the drum airbag, and the gas enters the sealing bladder through the air duct to make it expand, sealing the wire core. This sealing function can prevent external dust, moisture, humidity, etc. 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. For example, in a humid basement or a 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

[0045] Figure 1 is the overall structural schematic diagram of an RVV cable assembly of the present invention;

[0046] Figure 2 is the structural schematic diagram of the wire core and the outer end tube of the present invention;

[0047] Figure 3 is of the present invention Figure 2 partial enlarged structural schematic diagram at A in;

[0048] Figure 4 This is a schematic structural diagram of the clamping pliers and the beam tube of the present invention;

[0049] Figure 5 For the present invention Figure 4 Schematic cross-sectional structure diagram;

[0050] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged partial structure at position B in the present invention;

[0051] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged partial structure at position C in the present invention;

[0052] Figure 8 This is a schematic structural diagram of the plug-in flashlight and the clamping tube of the present invention;

[0053] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged partial structure at position D in the present invention;

[0054] Figure 10 This is a schematic structural diagram of the ratchet and the inner screw tube of the present invention;

[0055] Figure 11 This is a schematic structural diagram of the external gear ring and the external screw sleeve of the present invention.

[0056] In the drawings, the list of components represented by each reference numeral is as follows:

[0057] 1. RVV cable body; 2. Beam tube; 3. Lead screw; 4. External screw sleeve; 5. Inner screw tube; 6. Inner terminal; 7. Outer end tube; 8. Driving seat; 9. Clamping pliers; 10. Clamping arm; 11. Clamping tube; 12. Clamping block; 13. Pressure wire block; 14. Support arm; 15. Plug-in flashlight; 16. Terminal groove; 17. Tightening column; 18. Pressure sleeve; 19. Elastic pressure sleeve; 20. Tightening 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. Tightening spring; 29. Locking claw; 30. Ratchet; 31. Limit insertion rod; 32. Sealing bladder ring; 33. Inflatable bladder; 34. Wire core; 35. Cable bundling block. Detailed implementation manners

[0058] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0059] As Figure 1-11 shown, an RVV cable assembly includes an RVV cable body 1, and two symmetrically arranged fixing components are provided on the RVV cable body 1, and the two fixing components are clamped through an assembly component;

[0060] The fixing assembly includes a bundle tube 2;

[0061] 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 .

[0062] 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;

[0063] 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;

[0064] 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;

[0065] 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 of the outer screw sleeve 4 and the inner screw barrel 5;

[0066] 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.

[0067] 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;

[0068] When the outer screw sleeve 4 rotates, the driving seat 8 moves. After the driving seat 8 moves, it then drives a set of clamping pliers 9 to tightly hold the RVV cable body 1. When the RVV cable body 1 is tightly held, the connection strength and connection stability between the beam tube 2 and the RVV cable body 1 are effectively ensured.

[0069] The wire clamping assembly includes a set of clamping cylinders 11 arranged in a circumferential array and installed on the outer periphery of the beam tube 2. The lead screw 3 is respectively provided with a positive thread section and a reverse thread section. A pair of clamping blocks 12 are drivingly installed on both the positive thread section and the reverse thread section. A wire pressing block 13 is slidably installed on the inner wall of the beam tube 2 at a position corresponding to the inner side of each clamping cylinder 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 respectively drivingly connected with the two pairs of clamping blocks 12.

[0070] When the lead screw 3 rotates, the clamping blocks 12 on the positive thread section and the reverse thread section will move towards 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 drivingly connected with the clamping block 12, the movement of the clamping block 12 drives the wire pressing block 13 to slide on the inner wall of the beam tube 2 at a position corresponding to the inner side of the beam tube 2 through the transmission of the support arm 14.

[0071] When the outer screw sleeve 4 rotates to make the lead screw 3 rotate, the clamping blocks 12 move towards each other, and then the wire 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 beam tube 2, enhance the connection tightness between the wire core 34 of the RVV cable body 1 and the beam tube 2, and ensure the stability of the electrical signal transmission.

[0072] For example, when the RVV cable body 1 is subjected to vibration or external force pulling, the pressed wire core 34 is not easily displaced, avoiding problems such as poor contact and signal interruption caused by the loosening of the wire core 34, and improving the reliability of the RVV cable assembly.

[0073] The two terminal modules include a set of plug-in cylinders 15 installed on the beam tube 2. A terminal slot 16 with an open end at the tail is provided inside each plug-in cylinder 15. A clamping column 17 is slidably installed on the inner wall of each plug-in cylinder 15. The lead screw 3 is provided with a second transmission section, and a pressure sleeve 18 is drivingly installed on the second transmission section. An elastic compression sleeve 19 is slidably sleeved on the pressure sleeve 18. A compression spring 20 limited by the pressure sleeve 18 is installed at the tail of the elastic compression sleeve 19. A connecting rod 21 is hinged between the elastic compression sleeve 19 and each clamping column 17. The tails of each inner terminal 6 and the outer end cylinder 7 are fixed and electrically connected to a corresponding plug-in cylinder 15.

[0074] 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.

[0075] 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;

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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;

[0080] 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;

[0081] 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;

[0082] 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.

[0083] The end surface of the synchronous disc 22 and the tail end of the driven column 25 are both provided with friction lines.

[0084] 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.

[0085] 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.

[0086] 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;

[0087] 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.

[0088] 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.

[0089] 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 .

[0090] 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.

[0091] A method for assembling an RVV cable assembly comprises the following steps:

[0092] 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;

[0093] S2. Installation of the fixing components: Align the beam tubes 2 of the two fixing components to ensure that the axes of the two beam tubes 2 coincide. Align the outer screw sleeve 4 on one beam tube 2 with the inner screw cylinder 5 on the other beam tube 2, and initially connect them by rotating the outer screw sleeve 4. Use the one-way locking component to ensure the firm connection between the outer screw sleeve 4 and the inner screw cylinder 5 and prevent loosening. When installing the fixing components, align the inner terminal 6 inside one beam tube 2 with the outer end cylinder 7 inside the other beam tube 2 to ensure that the inner terminal 6 can be smoothly inserted into the outer end cylinder 7. By rotating the lead screw 3, use the linkage component to synchronously rotate the two lead screws 3, and push the inner terminal 6 to be fully inserted into the outer end cylinder 7. When the outer screw sleeve 4 rotates, the clamping component clamps the RVV cable body 1, the wire pressing block 13 presses the wire core 34 of the RVV cable body 1, the air duct inflates the sealing capsule ring 32, and the sealing component completely seals the wire core 34;

[0094] S3. Re-inspection: Check whether the electrical connection of the terminal module is firm to ensure the reliable electrical connection between the inner terminal 6 and the outer end cylinder 7 and the plug-in flashlight 15.

[0095] During use, the assembly method has clear steps and standardized operations;

[0096] The preparatory work ensures the integrity of all components and the good lubrication of the moving components, providing a reliable basis for subsequent assembly;

[0097] If there are damaged components or poor lubrication of the moving components, it may cause problems such as jamming and loose connection during the assembly process, affecting the quality and performance of the RVV cable body 1 components;

[0098] The installation steps of the fixing components in detail illustrate how to accurately connect the two fixing components, ensure the firm connection through the one-way locking component, and use the linkage component to realize the synchronous action of each functional component, ensuring the accurate insertion of the inner terminal 6 into the outer end cylinder 7, the clamping component clamping the RVV cable body 1, the wire clamping component pressing the wire core 34, and the sealing component sealing the wire core 34, etc.;

[0099] This orderly assembly process ensures the assembly quality and performance of the RVV cable body 1 components, enabling the RVV cable body 1 components to meet the design requirements. The re-inspection step can timely detect whether there are problems with the electrical connection of the terminal module, such as poor contact and looseness. Timely discovery and solution of these problems can further improve the reliability and safety of the RVV cable body 1 components and avoid failures during use.

[0100] The entire assembly method improves the assembly efficiency, reduces the assembly error rate, enables the RVV cable body 1 components to work stably and reliably, and is suitable for large-scale production and operators with different technical levels.

[0101] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0102] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0103] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within 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; the outer screw sleeve (4) is linked to the two screw rods (3) via a linkage component; The clamping assembly comprises a clamping clamp (9), and a group of clamping clamps (9) distributed in a circular array are hingedly connected to the tail of the clamping tube (2); The wire clamping assembly comprises a group of clamping tubes (11) distributed in a circumferential array and mounted 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 operatively mounted on the positive thread section and the negative thread section; 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); The linkage assembly comprises a synchronizing 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 of the inner terminals (6); each of the driven gears (26) simultaneously meshes with the inner gear ring (24) and the outer gear ring (23); and a group of synchronizing rods (27) distributed in a circumferential array are mounted on the inner gear ring (24).

2. The RVV cable assembly according to claim 1, characterized in that: The clamping assembly also includes a first transmission section arranged on the screw rod (3), a driving seat (8) being transmission-mounted on the first transmission section, and a clamping arm (10) is 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 bottom surface of each of the wire pressing blocks (13) is hinged with two supporting arms (14), and the other ends of the two supporting 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: Each of the synchronization rods (27) is slidably connected to the synchronization disk (22); a clamping spring (28) is installed between the synchronization disk (22) and the inner gear ring (24); and the synchronization disk (22) is clamped against the driven column (25) via 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 8, 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 the RVV cable assembly according to claim 9, characterized in that: The following steps are involved: S1. Preparation: prepare the RVV cable assembly, including two fixing assemblies and assembly assembly, and ensure that all parts are intact and the screw rod (3), threaded segment, and linkage assembly 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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