A wiring assembly and outdoor low voltage cable junction box

Abstract

The application relates to the field of low-voltage power distribution equipment, in particular to a wiring assembly and an outdoor low-voltage cable branch box, which comprises horizontal rows, the horizontal rows are arranged in multiple and are distributed in a gap stacking mode along the front-rear direction, a plurality of groups of connecting holes are arranged on the multiple horizontal rows and are aligned with each other, connecting mechanisms are arranged in the groups of aligned connecting holes in a one-to-one correspondence, an operating mechanism is coaxially arranged through the connecting mechanisms, and a fastening mechanism is arranged outside the operating mechanism on the rear side of each group of connecting mechanisms. The synchronous locking structure of the single operating shaft driving the multiple groups of fastening mechanisms is adopted, the branch circuit cables are synchronously compressed, the multi-circuit wiring assembly process is simplified, each circuit is independently overloaded and tripped, when the single-circuit branch cable is pressed in place and is saturated, the corresponding fastening mechanism can automatically slide and be disconnected, the remaining non-compressed circuits can continue to be synchronously locked, and the compression strength of each circuit is uniform.

Description

Technical Field

[0001] This invention relates to the field of low-voltage power distribution equipment, specifically to a wiring assembly and an outdoor low-voltage cable branch box. Background Technology

[0002] Outdoor low-voltage cable distribution boxes are important distribution equipment in low-voltage power distribution systems. They are widely used in power supply scenarios such as outdoor residential areas, industrial parks, and municipal roads. They are mainly used to realize the branching, transfer, and distribution protection of main cables. As the core conductive connection structure inside the distribution box, the connection stability, ease of disassembly and assembly, and tightness consistency of the wiring components directly determine the distribution safety and operation and maintenance efficiency of the distribution box.

[0003] Currently, most of the existing outdoor low-voltage cable branch boxes adopt a compact layout with multiple layers stacked inside the horizontal busbars. This layout can effectively reduce the space occupied by the box, realize dense power distribution of multiple circuits, and adapt to the installation needs of miniaturized outdoor equipment. However, in the actual assembly and operation and maintenance process, the cable connection structure between the branch circuit breaker and the horizontal busbar of the traditional branch box is simple. Each set of branch cables and crimp terminals needs to be individually tightened by the staff using bolts. The wiring process is cumbersome and the workload is large in multi-circuit power distribution scenarios.

[0004] Meanwhile, due to the compact structure of the multi-level horizontal busbars with gaps and stacking, coupled with the close arrangement of multiple branch circuit breakers and numerous lines, the reserved gaps between adjacent horizontal busbars are narrow and the operating space is limited. During the maintenance work of cable inspection, replacement, and removal, it is difficult for disassembly and assembly tools to be smoothly inserted into the gaps between the busbars to tighten bolts. This can easily lead to problems such as operation jamming and inability to align the disassembly and assembly. In some cases, it is even necessary to completely disassemble part of the busbar structure to complete the disassembly and assembly of a single circuit cable. This not only makes maintenance difficult, time-consuming, and labor-intensive, but also easily disturbs the surrounding already tightened wiring circuits, causing safety hazards such as loose wiring and poor contact, and affecting the operational stability of the power distribution system.

[0005] In addition, the traditional method of tightening bolts one by one relies heavily on manual experience, and it is difficult to accurately control the tightening force, resulting in inconsistent crimping and tightening force among different branch cables. Insufficient tightening force on some cables will cause excessive contact resistance between the terminal block and the horizontal bar, which is prone to overheating and arcing after long-term power supply, leading to circuit faults; while excessive tightening force on some cables can easily squeeze and damage the crimping terminal and cable core, shortening the cable's service life, and making it very easy for the cable to loosen under stress and fail to make contact during later use. Summary of the Invention

[0006] The purpose of this invention is to provide a wiring assembly and an outdoor low-voltage cable branch box to solve the above-mentioned problems. By adopting a synchronous locking structure that drives multiple sets of fastening mechanisms with a single operating shaft, the branch circuit cables are synchronously clamped, simplifying the multi-circuit wiring assembly process and realizing independent overload tripping of each circuit. When a single branch cable is clamped in place and saturated, the corresponding fastening mechanism can automatically slide and disengage from the transmission, and the remaining unclamped circuits can continue to be synchronously locked, ensuring uniform clamping force of each circuit, as detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a wiring assembly comprising: The horizontal row is provided in multiple rows and is stacked with gaps along the front-to-back direction. Each horizontal row is provided with several connecting holes, and the connecting holes at corresponding positions are aligned with each other. Connection mechanism, multiple sets of connection mechanisms are installed in the corresponding connection holes; An operating mechanism is provided to extend along the axial direction of the connecting mechanism; Fastening mechanisms, multiple sets of the fastening mechanisms are respectively arranged on one side of the corresponding connecting mechanism and are connected to the operating mechanism in a transmission manner; Branch circuit breakers, multiple sets of branch circuit breakers are electrically connected to branch lines, and the ends of the branch lines are provided with crimp terminals that extend between the corresponding connection mechanism and the fastening mechanism; The operating mechanism is used to synchronously drive multiple sets of fastening mechanisms to press the corresponding crimp terminals, so that the crimp terminals and the connecting mechanism form a conductive connection; each set of fastening mechanisms includes a force-limiting release mechanism for releasing the transmission connection with the operating mechanism after the corresponding crimp terminal reaches a predetermined pressing state, so that the remaining fastening mechanisms continue to maintain the transmission connection with the operating mechanism.

[0008] Preferably, the operating mechanism includes an operating shaft extending along the axial direction of the connecting mechanism, and the operating shaft is provided with a plurality of synchronous holes corresponding to the positions of each fastening mechanism; the fastening mechanism is sleeved on the outside of the operating shaft and is connected to the operating shaft for transmission through a synchronous connection structure.

[0009] Preferably, the force-limiting release mechanism includes a synchronizing ring, a crimping nut, a synchronizing pin, and an elastic element. The synchronizing ring is drivenly connected to the operating shaft, the crimping nut is used to press the crimping terminal, the synchronizing pin is slidably engaged with the operating shaft, and the elastic element is used to maintain the synchronizing ring in drive connection with the crimping nut and allow the synchronizing ring to move axially relative to the operating shaft.

[0010] Preferably, the synchronization hole is an oblong hole extending axially along the operating shaft, and the synchronization pin passes through the synchronization hole and can slide axially along the synchronization hole; the operating mechanism also includes a knob fixedly connected to one end of the operating shaft.

[0011] Preferably, the opposite end faces of the synchronizing ring and the crimping nut are respectively provided with driving teeth and driven teeth that can mesh or disengage from each other. The driving teeth and driven teeth are both helical teeth, so that the synchronizing ring can move axially along the operating shaft and disengage from the crimping nut when the predetermined clamping force is reached.

[0012] Preferably, the elastic element is a spring, which is disposed between the synchronizing ring and the preload nut. The preload nut is used to adjust the preload force of the spring. The synchronizing ring is provided with a pin hole, and the synchronizing pin passes through the pin hole and is threadedly connected to the pin hole. At least one end of the synchronizing pin is provided with a disassembly groove.

[0013] Preferably, the connecting mechanism includes a threaded sleeve and a mounting ring. The threaded sleeve is installed in the connecting hole and electrically connected to the horizontal bar. The mounting ring is used to limit the axial position of the threaded sleeve. The threaded sleeve is provided with a terminal slot for inserting a crimping terminal. The two ends of the horizontal bar are provided with bracket holes.

[0014] This application also discloses an outdoor low-voltage cable branch box, comprising: The enclosure serves as the overall load-bearing installation base; Two vertical frames are fixedly installed on both sides inside the box. Positioning guide rails are horizontally installed between the vertical frames; The circuit breaker bracket is fixedly installed below the positioning guide rail and serves as the installation base for the branch circuit breaker. The main circuit breaker is mounted and fixed on the upper part of the positioning guide rail; An insulating bracket is mounted on the front side of the positioning guide rail and supports the wiring assembly described above. The positioning seat is slidably mounted on the positioning guide rail and fixedly connected to the end of the insulating bracket. When assembled and in use, the main circuit breaker is connected to the external incoming cable and electrically connected to the horizontal busbar of the wiring assembly. Electrical energy is distributed to each branch circuit breaker via the multi-layer horizontal busbar and branch lines. The insulating bracket electrically isolates the wiring assembly from the metal cabinet structure.

[0015] Preferably, the vertical frame has vertical holes, and the two ends of the positioning guide rail have horizontal holes that cooperate with the vertical holes, so that the vertical position of the positioning guide rail can be adjusted; the front side of the positioning seat has a positioning core hole.

[0016] Preferably, the insulating support includes a core rod and an insulator sleeve. The insulator sleeve is slidably wrapped around the outside of the core rod, and the end of the core rod is inserted into the positioning core hole to achieve threaded fastening. Several sets of insulator sleeves are distributed between adjacent horizontal rows.

[0017] Preferably, the circuit breaker bracket is used for the branch circuit breaker to be snapped and fixed; the enclosure is composed of a back plate, two sets of side plates, a front cover plate and an observation window plate, the cover plate can be opened and closed, and the observation window plate is located on the cover plate.

[0018] Preferably, the enclosure has a circuit breaker hole and a wiring hole. The circuit breaker hole is adapted to the assembly of the main circuit breaker, and the wiring holes are respectively located at the upper and lower positions of the enclosure for the incoming cable to be connected to the main circuit breaker and the branch outgoing cable to be led out.

[0019] When using the above-mentioned wiring assembly and outdoor low-voltage cable branch box, two vertical frames are vertically fixed inside the box on the left and right sides. Using the vertical holes on the vertical frames, the two ends of the positioning guide rail are fastened to the vertical frames through the horizontal holes with fasteners. The installation height of the positioning guide rail is adjusted up and down according to the on-site wiring requirements and then locked. Then, the circuit breaker bracket is horizontally fixed inside the box on the lower side of the positioning guide rail. The main circuit breaker is snapped into the reserved installation position in the upper part of the box, with the main circuit breaker's inlet end facing the wiring hole at the top of the box.

[0020] The positioning seat is slidably assembled onto the positioning guide rail. The position of the positioning seat is determined according to the spacing of the horizontal row and temporarily locked. The core rod of the insulating bracket is inserted into the positioning core hole of the positioning seat and tightened and limited by thread. At the same time, the insulator sleeves are pre-installed on the outside of the core rod in sequence. The insulator sleeves are arranged in the interlayer positions of the multi-layer horizontal row to complete the installation of the insulating support structure of the horizontal row.

[0021] Take multiple horizontal rows and stack them back and forth at intervals. Align the connecting holes on all horizontal rows and insert the entire connecting mechanism from the outside of the connecting hole. Insert the threaded sleeve into the inside of the connecting hole and press the mounting ring against the front of the horizontal row to axially limit the threaded sleeve. This completes the pre-assembly of a single connecting mechanism with the horizontal row. Then, complete the assembly of all connecting mechanisms with the horizontal row in sequence.

[0022] The operating shaft passes through the center of several sets of connecting mechanisms in all connected states, so that the operating shaft coaxially passes through the entire stacked horizontal row; at the same time, each set of fastening mechanisms is assembled sequentially along the operating shaft from back to front: First, insert the preload nut, synchronizing ring, spring, and crimping nut onto the operating shaft between adjacent horizontal rows in sequence; align the pin hole of the synchronizing ring with the waist-shaped synchronizing hole on the operating shaft, pass the synchronizing pin through the pin hole and the synchronizing hole, and tighten the pin using the disassembly and assembly grooves at both ends of the synchronizing pin to lock the synchronizing pin with the pin hole thread. At this time, the synchronizing ring can slide back and forth along the waist-shaped synchronizing hole by relying on the synchronizing pin; according to the number of branch circuits, complete the assembly of all fastening mechanisms one by one.

[0023] Tighten the preload nut to compress the spring and adjust the spring preload to set a uniform upper limit for clamping force for all fastening mechanisms.

[0024] The external low-voltage incoming cable passes through the wiring hole at the top of the box and is connected to the incoming terminal of the main circuit breaker; the outgoing lead of the main circuit breaker is connected to the horizontal busbar to realize the main power supply to the busbar system.

[0025] According to the on-site branch power supply circuit requirements, select the corresponding number of branch circuit breakers and install them on the circuit breaker bracket; after crimping one end of the branch line to the crimp terminal, insert and fix it to the outgoing terminal of the branch circuit breaker; the other end of the branch line carries the crimp terminal and extends into the terminal slot inside the screw sleeve from the gap between the fastening mechanism and the connecting mechanism.

[0026] When locking, turn the knob at the end of the operating shaft in the forward direction to drive the operating shaft to rotate synchronously; relying on the engagement of the active helical teeth of the synchronous ring and the driven helical teeth of the crimping nut, all the crimping nuts are fed forward synchronously, pressing the crimping terminals in the terminal slots forward against the inner wall of the screw sleeve, realizing the conductive connection between the branch line and the horizontal row; When a branch line is crimped into place and the crimping nut can no longer rotate forward, the synchronizing ring will be subjected to a reaction force and slide backward along the synchronizing hole. The compressed spring will cause the helical teeth to separate and disengage from the transmission. The crimping nut of the fastening mechanism of that line will no longer rotate with the operating shaft. The remaining circuits that are not fully crimped will still maintain tooth meshing and continue to tighten with the operating shaft until all circuits are fully locked. A single turn of the knob can complete the crimping of the synchronous wiring of all branches.

[0027] When dismantling a single branch: If it is necessary to dismantle a branch line alone, manually rotate the crimp nut at that location to loosen the locking state of the corresponding crimp terminal, and directly pull out the crimp terminal of the branch line to complete the dismantling of a single circuit. The other wiring circuits will not be affected.

[0028] When disconnecting all wires: rotate the knob in the opposite direction to drive the operating shaft to rotate back. All the fastening mechanisms that are in the meshing state will move backward and loosen simultaneously. The crimping nuts will be loosened in a synchronized manner, and all the branch crimping terminals on the outside of the same operating shaft will be loosened. Several corresponding branch lines and branch circuit breakers can be removed at once.

[0029] The beneficial effects are as follows: 1. By adopting a synchronous locking structure that drives multiple fastening mechanisms with a single operating shaft, the synchronous clamping and locking of all branch circuit cables can be completed with a single rotation of the operating shaft, simplifying the multi-circuit wiring assembly process, improving the equipment's factory assembly efficiency and on-site construction wiring efficiency, and adapting to the rapid installation needs of dense multi-circuit power distribution scenarios.

[0030] 2. Utilizing the principle of helical gear meshing and sliding clutch, each circuit can independently overload trip. When a single branch cable is crimped in place and saturated, the corresponding fastening mechanism can automatically slide and disengage from the transmission, while the remaining unpressed circuits can continue to be locked synchronously, solving the problem of inconsistent clamping force among circuits in the traditional manual locking method.

[0031] 3. By adjusting the pre-compression of the spring with the pre-tightening nut, the standard clamping force of the wiring circuit is limited, so that the contact consistency between each crimping terminal and the horizontal bar is high, the contact resistance is reduced, and the faults of overheating, arcing and poor contact caused by insufficient clamping are avoided, as well as the problem of terminal and wire core squeezing damage caused by excessive clamping, thereby improving the stability and safety of power distribution operation.

[0032] 4. It is suitable for compact layouts with multiple horizontal busbars stacked together, eliminating the need to insert tools into the narrow gaps between the busbars to tighten the bolts point by point. The disassembly and assembly process is convenient and efficient, without disassembling the overall structure of the busbar, and will not disturb the surrounding wiring circuits that have been locked. This reduces the difficulty and maintenance cost of subsequent cable replacement, inspection and maintenance. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional structural breakdown diagram of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of another aspect of the present invention; Figure 5 This is a three-dimensional structural disassembly diagram of another aspect of the present invention; Figure 6 This is a three-dimensional structural diagram of the horizontal arrangement of the present invention; Figure 7 This is a structural breakdown diagram of the horizontal row and connecting mechanism of the present invention; Figure 8 This is a three-dimensional structural disassembly diagram of the operating mechanism of the present invention; Figure 9 This is a partial structural breakdown diagram of the fastening mechanism of the present invention; Figure 10 This is a schematic diagram of the operating mechanism of the present invention; Figure 11 This is a three-dimensional structural schematic diagram of the crimp nut of the present invention; Figure 12 This is a three-dimensional structural schematic diagram of the branch circuit breaker of the present invention; Figure 13 This is a three-dimensional structural diagram of the branch circuit breaker of the present invention from another direction; Figure 14 This is a three-dimensional structural schematic diagram of the circuit breaker bracket of the present invention; Figure 15 This is a schematic diagram showing the internal structure of the present invention. Figure 16 This is a right view of the internal structure of the present invention; Figure 17 This is a schematic diagram of the internal three-dimensional structure of the present invention; Figure 18 This is a structural breakdown diagram of the box body of the present invention.

[0035] The annotations in the attached figures are explained as follows: 1. Horizontal row; 101. Connecting hole; 102. Bracket hole; 2. Operating mechanism; 201. Operating shaft; 202. Synchronization hole; 203. Knob; 3. Connecting mechanism; 301. Screw sleeve; 302. Terminal slot; 303. Mounting ring; 4. Fastening mechanism; 401. Crimping nut; 401a. Driven gear; 402. Synchronization ring; 402a. Driving gear; 402b. Pin hole; 403. Synchronization pin; 403a. Disassembly / assembly slot; 404. Preload nut ; 405, Spring; 5, Branch Circuit Breaker; 6, Branch Line; 601, Crimping Terminal; 7, Insulating Support; 701, Core Rod; 702, Insulator Sleeve; 8, Main Circuit Breaker; 9, Positioning Seat; 901, Positioning Core Hole; 10, Positioning Guide Rail; 10a, Horizontal Hole; 11, Circuit Breaker Support; 12, Vertical Frame; 12a, Vertical Hole; 13, Housing; 13a, Back Plate; 13b, Cover Plate; 13c, Side Plate; 13d, Observation Window; 13e, Wiring Hole. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0037] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] See Figures 1-18 As shown, the present invention provides a wiring assembly, comprising: Horizontal row 1, multiple horizontal rows 1 are arranged and stacked with gaps along the front and back direction, and several sets of connecting holes 101 are opened on the multiple horizontal rows 1 that are aligned with each other; Connecting mechanism 3, multiple sets of connecting mechanisms 3 are correspondingly inserted into the connecting holes 101 arranged in alignment in each set; Operating mechanism 2 is set with an overall coaxial through-connecting mechanism 3, which is used to provide a unified rotational driving force for multiple fastening mechanisms 4, so as to realize multi-circuit synchronous locking and loosening operations; Fastening mechanism 4, multiple sets of fastening mechanisms 4 are synchronously rotated and set outside the operating mechanism 2 on the rear side of each set of connecting mechanism 3, so as to synchronously press and fix the end terminals of branch line 6, so as to realize reliable conductive connection between branch line 6 and horizontal row 1; Branch circuit breaker 5, multiple sets of branch circuit breaker 5 are electrically connected to branch line 6, and the end of the branch line 6 is provided with crimp terminal 601 and extends between the corresponding connection mechanism 3 and fastening mechanism 4, thereby realizing the conduction and switching between branch circuit breaker 5 and horizontal row 1, and completing the multi-path power distribution and diversion. In the locked state, rotating the operating mechanism 2 can drive all the fastening mechanisms 4 to tighten synchronously. The fastening mechanism 4 presses and locks the crimp terminal 601 at the end of the branch line 6 at the connecting mechanism 3, so that the branch circuit breaker 5 and the horizontal row 1 can achieve conductive connection, thereby changing the traditional single-circuit locking method and greatly improving the assembly efficiency of multi-circuit wiring. When a single set of fastening mechanisms 4 is pressed in place and cannot continue to rotate, the internal structure of the fastening mechanism 4 slides and disengages from the transmission, thereby realizing independent tripping and overload protection of a single circuit, avoiding damage to the terminals and cables by overpressure. The remaining fastening mechanisms 4 that are not locked in place can continue to complete the pressing operation with the operating shaft 201, thereby ensuring that all circuits can be pressed in place and that the pressing force of each circuit is basically the same.

[0041] As an optional implementation, the operating mechanism 2 is a longitudinally extending operating shaft 201. Several sets of synchronization holes 202 are provided on the operating shaft 201 corresponding to the fastening mechanism 4. The synchronization holes 202 are waist-shaped holes extending axially along the operating shaft 201. The length of the synchronization holes 202 is greater than the diameter of the synchronization pin 403, so as to form the sliding stroke required for the axial engagement and disengagement of the synchronization ring 402. With this configuration, the axial sliding margin provided by the waist-shaped holes can meet the stroke requirements of the synchronous pin 403 for front and rear sliding engagement and disengagement, ensuring smooth engagement and disengagement of the teeth. The operating mechanism 2 also includes a knob 203, which is fixedly mounted on one end of the operating shaft 201; the fastening mechanism 4 is sleeved on the outside of the operating shaft 201. The fastening mechanism 4 includes a synchronous pin 403 that can pass through the synchronous hole 202 and slide along the synchronous hole 202. With this configuration, the fastening mechanism 4 and the operating shaft 201 can be linked and axially slidably coupled. The assembly structure is simple and the disassembly and assembly are convenient. Each fastening mechanism 4 can be maintained and replaced separately. In this application, in order to prevent the operating shaft 201 from electrically connecting each layer of horizontal row 1, the operating shaft 201 is preferably made of insulating material, thereby ensuring that each layer of horizontal row 1 remains mutually insulated and is electrically connected only through the corresponding crimp terminals 601; The fastening mechanism 4 also includes a crimping nut 401 and a synchronizing ring 402. The crimping nut 401 and the synchronizing ring 402 have respectively driven teeth 401a and driving teeth 402a that can mesh or separate. Both the driving teeth 402a and the driven teeth 401a are helical tooth structures with axial lead angles. When the crimping nut 401 reaches the set clamping position and continues to input rotational torque, the helical tooth meshing surface generates an axial force, pushing the synchronizing ring 402 to overcome the preload of the spring 405 and move axially along the operating shaft 201, causing the driving teeth 402a and driven teeth 401a to disengage, thereby stopping the corresponding circuit from continuing to clamp. This utilizes the helical tooth sliding characteristic to achieve automatic clutch disengagement, eliminating single-circuit clutches. The locking mechanism 4 is equipped with a pre-tightening nut 404 and a spring 405. The spring 405 is pressed between the synchronizing ring 402 and the pre-tightening nut 404. The pre-tightening nut 404 is used to adjust the compression of the spring 405, thereby ensuring that each set of fastening mechanisms 4 has a basically consistent release force and crimping force, so that each circuit can complete the locking under similar crimping force conditions, improving the crimping consistency. The synchronizing ring 402 has a through pin hole 402b, and the synchronizing pin 403 is threaded into the pin hole 402b. Both ends of the synchronizing pin 403 are provided with disassembly and assembly grooves 403a. This setting facilitates the alignment and disassembly of the synchronizing pin 403, realizing the quick disassembly and independent maintenance of the fastening mechanism 4. The connecting mechanism 3 is embedded in the connecting hole 101. The connecting mechanism 3 includes a threaded sleeve 301 and a mounting ring 303. The rear end of the threaded sleeve 301 is provided with a terminal groove 302 that can accommodate the crimping terminal 601. The mounting ring 303 axially limits the threaded sleeve 301 and can be fixed to the outside of the threaded sleeve 301 by pressing, snapping, welding or integral molding. It is used to limit the threaded sleeve 301 from axially dislodging from the connecting hole 101, thereby achieving stable assembly and reliable limiting of the connecting mechanism 3, and ensuring accurate positioning and stable contact of the crimping terminal 601. Both ends of the single horizontal row 1 are provided with bracket holes 102. This setting facilitates the overall positioning, installation and fixing of the horizontal row 1, and ensures that the stacking spacing of multiple horizontal rows 1 is uniform and the arrangement is neat. In this application, the threaded sleeve 301 is made of conductive metal material and forms a reliable conductive connection with the corresponding horizontal row 1. After the crimping terminal 601 is pressed, it is clamped between the crimping nut 401 and the threaded sleeve 301, so that the horizontal row 1, the threaded sleeve 301, the crimping terminal 601 and the branch line 6 form a continuous and stable conductive path. The crimping nut 401 forms a threaded engagement with the threaded sleeve 301 in the connecting mechanism 3. During the rotation of the crimping nut 401 driven by the synchronous ring 402, the crimping nut 401 is fed along the axial direction of the threaded sleeve 301 and gradually presses the crimping terminal 601 located in the terminal groove 302, thereby realizing the mechanical fixation and conductive connection between the crimping terminal 601 and the horizontal row 1.

[0042] This application also discloses an outdoor low-voltage cable branch box, comprising: Box 13 serves as the overall load-bearing installation base; Two vertical frames 12 are fixedly installed on both sides inside the housing 13 to provide vertical installation support for the positioning guide rail 10 and realize modular assembly of the internal power distribution structure. Positioning guide rail 10 is horizontally installed between vertical frames 12; The circuit breaker bracket 11 is fixedly installed below the positioning guide rail 10, serving as the installation base for the branch circuit breaker 5. The main circuit breaker 8 is mounted and fixed on the upper part of the positioning guide rail 10. It is used to connect to the external incoming line and realize the main circuit on / off protection to ensure the safety of the overall power distribution circuit. An insulating bracket 7 is mounted on the front side of the positioning guide rail 10 and supports the wiring assembly described in the above embodiment. The positioning seat 9 is slidably mounted on the positioning guide rail 10 and fixedly connected to the end of the insulating bracket 7, thereby realizing the lateral positioning and anti-rotation limit of the insulating bracket 7 and the wiring assembly, and preventing the overall offset and rotation during the locking operation. When assembled and in use, the main circuit breaker 8 is connected to the external incoming cable and electrically connected to the horizontal bar 1 of the wiring assembly. The electrical energy is distributed to each branch circuit breaker 5 through the multi-layer horizontal bar 1 and the branch line 6. The insulating bracket 7 electrically isolates the wiring assembly from the metal cabinet structure, thereby avoiding the risk of electrical conduction and phase-to-phase short circuits in the cabinet, and improving the insulation protection performance and operational safety of outdoor equipment.

[0043] The vertical frame 12 has vertical holes 12a, and the positioning guide rail 10 has horizontal holes 10a at both ends that cooperate with the vertical holes 12a, so that the vertical position of the positioning guide rail 10 can be adjusted. This allows for flexible adjustment of the installation height according to the on-site wiring requirements, adapting to different wiring conditions and assembly spaces. The positioning seat 9 has a positioning core hole 901 on its front side. The insulating support 7 includes a core rod 701 and an insulator sleeve 702. The insulator sleeve 702 is slidably wrapped around the outside of the core rod 701. The end of the core rod 701 is inserted into the positioning core hole 901 to achieve threaded fastening. Several sets of insulator sleeves 702 are distributed between adjacent horizontal rows 1, thereby realizing multi-layer horizontal row 1 layered insulation isolation and stable support, ensuring interlayer insulation safety and uniform and regular arrangement. The circuit breaker bracket 11 is used for the branch circuit breaker 5 to be snapped and fixed; the enclosure 13 is composed of a back plate 13a, two sets of side plates 13c, a front cover plate 13b and an observation window 13d. The cover plate 13b can be opened and closed, and the observation window 13d is located at the cover plate 13b, so that the operating status of the circuit breaker and wiring components inside the enclosure can be directly observed without opening the enclosure, which is convenient for daily inspection and maintenance. The enclosure 13 has a circuit breaker hole and a wiring hole 13e. The circuit breaker hole is adapted to the assembly of the main circuit breaker 8. The wiring holes 13e are respectively located at the upper and lower positions of the enclosure 13. They are used for the incoming cable to be connected to the main circuit breaker 8 and the branch outgoing cable to be led out, thereby realizing the separation of incoming and outgoing lines and the orderly wiring. The wiring is orderly, has good protection, and is suitable for outdoor standardized power distribution construction.

[0044] Using the above structure, during use, the two vertical frames 12 are vertically fixed inside the left and right sides of the box 13. Using the vertical holes 12a on the vertical frames 12, the two ends of the positioning guide rail 10 are fastened to the vertical frames 12 through the horizontal holes 10a with fasteners. After adjusting the installation height of the positioning guide rail 10 according to the on-site wiring requirements, it is locked and fixed. Then, the circuit breaker bracket 11 is horizontally fixed inside the box 13 below the positioning guide rail 10. The main circuit breaker 8 is snapped into the reserved installation position at the top of the box 13, with the inlet end of the main circuit breaker 8 facing the wiring hole 13e at the top of the box 13.

[0045] The positioning seat 9 is slidably assembled onto the positioning guide rail 10. The position of the positioning seat 9 is determined according to the arrangement spacing of the horizontal row 1 and temporarily locked. The core rod 701 of the insulating bracket 7 is inserted into the positioning core hole 901 of the positioning seat 9 and tightened by thread. At the same time, the insulator sleeves 702 are pre-installed on the outside of the core rods 701. The insulator sleeves 702 are arranged in a partitioned manner between the layers of the multi-layer horizontal row 1 to complete the installation of the insulating support structure of the horizontal row 1.

[0046] Take multiple horizontal rows 1 and stack them back and forth at intervals. Align the connecting holes 101 on all horizontal rows 1. Insert the connecting mechanism 3 as a whole from the outside of the connecting hole 101. Insert the threaded sleeve 301 into the inside of the connecting hole 101. Tighten the mounting ring 303 against the front side of the horizontal row 1 to axially limit the threaded sleeve 301. This completes the pre-assembly of a single connecting mechanism 3 with the horizontal row 1. Then, complete the assembly of all connecting mechanisms 3 with the horizontal row 1 in sequence.

[0047] The operating shaft 201 passes through the center of several sets of connecting mechanisms 3 in all connected states, so that the operating shaft 201 coaxially passes through the entire stacked horizontal row 1; at the same time, each set of fastening mechanisms 4 is assembled sequentially from back to front along the operating shaft 201: First, insert the preload nut 404, synchronizing ring 402, spring 405, and crimping nut 401 sequentially onto the operating shaft 201 between adjacent horizontal rows 1; align the pin hole 402b of the synchronizing ring 402 with the waist-shaped synchronizing hole 202 on the operating shaft 201, pass the synchronizing pin 403 through the pin hole 402b and the synchronizing hole 202, and tighten the pin using the disassembly and assembly grooves 403a at both ends of the synchronizing pin 403 to lock the synchronizing pin 403 with the pin hole 402b. At this time, the synchronizing ring 402 can slide back and forth along the waist-shaped synchronizing hole 202 by relying on the synchronizing pin 403; according to the number of branch circuits, complete the assembly of all four fastening mechanisms one by one.

[0048] Tighten the preload nut 404 to compress the spring 405 and adjust the preload of the spring 405 to set a uniform upper limit of clamping force for all fastening mechanisms 4.

[0049] The external low-voltage incoming cable passes through the wiring hole 13e at the top of the box 13 and is connected to the incoming terminal of the main circuit breaker 8; the outgoing lead of the main circuit breaker 8 is connected to the horizontal busbar 1 to realize the main power supply to the busbar system.

[0050] According to the on-site branch power supply circuit requirements, select the corresponding number of branch circuit breakers 5 and install them on the circuit breaker bracket 11; after crimping one end of the branch line 6 to the crimp terminal 601, insert and fix it to the outgoing terminal of the branch circuit breaker 5; the other end of the branch line 6 carries the crimp terminal 601 and extends into the terminal slot 302 inside the screw sleeve 301 from the gap between the fastening mechanism 4 and the connecting mechanism 3.

[0051] When locking, turn the knob 203 at the end of the operating shaft 201 in the forward direction to drive the operating shaft 201 to rotate synchronously; relying on the engagement of the active helical teeth of the synchronous ring 402 and the driven helical teeth of the crimping nut 401, all the crimping nuts 401 are fed forward synchronously, pressing the crimping terminals 601 in the terminal slot 302 forward against the inner wall of the screw sleeve 301, so as to realize the conductive connection between the branch line 6 and the horizontal row 1; When a branch line 6 is crimped into place and the crimping nut 401 can no longer rotate forward, the synchronization ring 402 will be subjected to a reaction force and slide backward along the synchronization hole 202. The compression spring 405 will cause the helical tooth surfaces to separate from each other and disengage from the transmission. The crimping nut 401 of the fastening mechanism 4 of that line will no longer rotate with the operating shaft 201. The remaining circuits that are not crimped into place will still maintain tooth meshing and will continue to tighten with the operating shaft 201 until all circuits are fully locked. A single turn of the knob 203 can complete the crimping of all branch synchronous wiring.

[0052] When dismantling a single branch: the disassembly structure (such as hexagonal socket, Torx groove or special sleeve mating part) reserved in the crimp nut 401 can be used to loosen the lock state of the corresponding crimp terminal 601, and the crimp terminal 601 of the branch line 6 can be directly pulled out to achieve dismantling of a single circuit without dismantling other circuits.

[0053] When the operating shaft 201 rotates in the reverse direction, as the crimping nut 401 gradually releases its clamping effect on the crimping terminal 601, under the restoring force of the spring 405, the synchronizing ring 402 automatically resets along the operating shaft 201, so that the driving tooth 402a re-engages with the driven tooth 401a, thereby driving all the crimping nuts 401 to rotate synchronously in the reverse direction, realizing synchronous loosening of each circuit.

[0054] When disconnecting all wires: Rotate the knob 203 in the reverse direction to drive the operating shaft 201 to rotate. All the fastening mechanisms 4 that are in the meshing state will move backward and loosen simultaneously. The crimping nuts 401 will be loosened backward simultaneously. All the branch crimping terminals 601 on the outside of the same operating shaft 201 will be loosened. Several corresponding branch lines 6 and branch circuit breakers 5 can be removed at once.

[0055] By using a single operating shaft 201 to drive multiple sets of fastening mechanisms 4 in a synchronous locking structure, a single rotation of the operating shaft 201 can complete the synchronous pressing and locking of all branch circuit cables, simplifying the multi-circuit wiring assembly process, improving the efficiency of equipment factory assembly and on-site construction wiring, and adapting to the rapid installation needs of dense multi-circuit power distribution scenarios.

[0056] By utilizing the principle of helical gear meshing and sliding clutch, each circuit can be independently overloaded and tripped. When the single branch line 6 cable is crimped into place and saturated, the corresponding fastening mechanism 4 can automatically slide and disengage from the transmission. The remaining unpressed circuits can continue to be locked synchronously, solving the problem of uneven clamping force in each circuit in the traditional manual locking method.

[0057] By adjusting the pre-compression of the spring 405 with the pre-tightening nut 404, the standard clamping force of the wiring circuit is limited, so that the contact consistency between each crimping terminal 601 and the horizontal row 1 is high, the contact resistance is reduced, and the faults of overheating, arcing and poor contact caused by insufficient clamping are avoided, as well as the problem of terminal and wire core squeezing damage caused by excessive clamping, thereby improving the stability and safety of power distribution operation.

[0058] It is compatible with the compact layout of multi-layer horizontal busbars with gaps, eliminating the need to reach into the narrow gaps between the busbars to tighten the bolts point by point. The disassembly and assembly process is convenient and efficient, without disassembling the overall structure of the busbar, and will not disturb the surrounding wiring circuits that have been locked. This reduces the difficulty and maintenance cost of subsequent cable replacement, inspection and maintenance.

[0059] It should be noted that in this application, the operating mechanism 2, connecting mechanism 3, fastening mechanism 4, horizontal bar 1, and branch circuit breaker 5 form a cooperative working relationship through transmission, limit, and conductive cooperation. The specific structural form of each component can be adjusted according to the installation space, power distribution capacity, number of circuits, and assembly requirements of the outdoor low-voltage cable branch box. Their connection method, installation position, driving form, guiding method, and limit method are not limited to the specific structure described in this embodiment. As long as the operating mechanism 2 can synchronously drive multiple sets of fastening mechanisms 4 to complete the connection between multiple circuit branch lines 6 and horizontal bar 1, and can stop the fastening mechanism 4 from continuing to transmit the tightening action after reaching the predetermined tightening state, it will not affect the fact that this application achieves synchronous wiring of multiple circuits, independent response of each circuit, and stable control of the wiring status through the cooperative cooperation between the synchronous driving mechanism and multiple sets of connecting mechanisms 3. The overall working principle and technical effect, while the fastening mechanism 4, which has not reached the predetermined clamping state, continues to complete the connection, and at the same time ensures that each circuit can independently complete the connection or disconnection, are all technical concepts to be realized by the technical solution of this application. At the same time, the synchronous transmission, motion guidance, axial limit, clamping connection, transmission disengagement, elastic reset, anti-rotation positioning and insulation support functions between the various connecting components can all be realized by conventional structures selected by those skilled in the art according to actual application needs. The materials, dimensions, shapes, quantities, installation methods, matching forms and specific transmission parameters of each component can be adapted to different specifications of outdoor low voltage cable branch boxes and different power distribution scenarios, without affecting the overall working principle and technical effect of this application to improve wiring efficiency, enhance connection consistency and take into account the convenience of installation and maintenance through synchronous drive, multi-circuit collaborative connection and independent response.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wiring assembly, characterized in that, include: A horizontal row (1) is provided, with multiple rows stacked and distributed with gaps along the front and back direction. Each horizontal row (1) is provided with several connecting holes (101), and the connecting holes (101) at corresponding positions are aligned with each other. Connection mechanism (3), multiple sets of connection mechanisms (3) are respectively installed in the corresponding connection holes (101); The operating mechanism (2) extends along the axial direction of the connecting mechanism (3); Fastening mechanism (4), multiple sets of the fastening mechanism (4) are respectively arranged on one side of the corresponding connecting mechanism (3) and are connected to the operating mechanism (2) in a transmission manner; Branch circuit breaker (5), multiple sets of branch circuit breakers (5) are electrically connected to branch lines (6), and the ends of the branch lines (6) are provided with crimp terminals (601) and extend into the corresponding connection mechanism (3) and fastening mechanism (4); The operating mechanism (2) is used to synchronously drive multiple sets of fastening mechanisms (4) to press the corresponding crimp terminals (601), so that the crimp terminals (601) and the connecting mechanism (3) form a conductive connection; each set of fastening mechanisms (4) includes a force-limiting release mechanism for releasing the transmission connection with the operating mechanism (2) after the corresponding crimp terminal (601) reaches the predetermined pressing state, so that the remaining fastening mechanisms (4) continue to maintain the transmission connection with the operating mechanism (2).

2. A wiring assembly according to claim 1, characterized in that, The operating mechanism (2) includes an operating shaft (201) extending axially along the connecting mechanism (3). The operating shaft (201) is provided with a plurality of synchronous holes (202) corresponding to the positions of each fastening mechanism (4). The fastening mechanism (4) is sleeved on the outside of the operating shaft (201) and is connected to the operating shaft (201) through a synchronous connection structure.

3. A wiring assembly according to claim 2, characterized in that, The force-limiting release mechanism includes a synchronizing ring (402), a crimping nut (401), a synchronizing pin (403), and an elastic element. The synchronizing ring (402) is driven to the operating shaft (201). The crimping nut (401) is used to press the crimping terminal (601). The synchronizing pin (403) is slidably engaged with the operating shaft (201). The elastic element is used to keep the synchronizing ring (402) driven to the crimping nut (401) and to allow the synchronizing ring (402) to move axially relative to the operating shaft (201).

4. A wiring assembly according to claim 3, characterized in that, The synchronization hole (202) is an oblong hole extending axially along the operating shaft (201). The synchronization pin (403) passes through the synchronization hole (202) and can slide axially along the synchronization hole (202). The operating mechanism (2) also includes a knob (203) fixedly connected to one end of the operating shaft (201).

5. A wiring assembly according to claim 3, characterized in that, The synchronizing ring (402) and the crimping nut (401) have opposite end faces respectively provided with driving teeth (402a) and driven teeth (401a) that can mesh or disengage with each other. The driving teeth (402a) and driven teeth (401a) are both helical teeth, so that the synchronizing ring (402) can move axially along the operating shaft (201) and disengage from the transmission connection with the crimping nut (401) when the predetermined clamping force is reached.

6. A wiring assembly according to claim 5, characterized in that, The elastic element is a spring (405), which is disposed between the synchronizing ring (402) and the preload nut (404). The preload nut (404) is used to adjust the preload force of the spring (405). The synchronizing ring (402) is provided with a pin hole (402b), and the synchronizing pin (403) passes through the pin hole (402b) and is threadedly connected to the pin hole (402b). At least one end of the synchronizing pin (403) is provided with a disassembly groove (403a).

7. A wiring assembly according to claim 1, characterized in that, The connecting mechanism (3) includes a threaded sleeve (301) and a mounting ring (303). The threaded sleeve (301) is installed in the connecting hole (101) and electrically connected to the horizontal row (1). The mounting ring (303) is used to limit the axial position of the threaded sleeve (301). The threaded sleeve (301) is provided with a terminal slot (302) for inserting a crimp terminal (601). The horizontal row (1) is provided with bracket holes (102) at both ends.

8. An outdoor low-voltage cable branch box, characterized in that, include: Box (13); Two vertical frames (12) are fixedly installed on both sides inside the box (13); Positioning guide rail (10) is horizontally mounted between vertical frames (12); The circuit breaker bracket (11) is fixedly installed below the positioning guide rail (10) and is used to install the branch circuit breaker (5). The main circuit breaker (8) is mounted and fixed on the upper part of the positioning guide rail (10); An insulating bracket (7) is mounted on the front side of the positioning guide rail (10); The positioning seat (9) is slidably mounted on the positioning guide rail (10) and fixedly connected to the end of the insulating bracket (7); And the wiring assembly as described in any one of claims 1 to 7, wherein the wiring assembly is mounted on the insulating bracket (7).

9. An outdoor low-voltage cable branch box according to claim 8, characterized in that, The vertical frame (12) is provided with vertical holes (12a), and the two ends of the positioning guide rail (10) are provided with horizontal holes (10a) that correspond to the vertical holes (12a) to adjust the installation height of the positioning guide rail (10); the positioning seat (9) is provided with a positioning core hole (901); the insulating bracket (7) includes a core rod (701) and an insulator sleeve (702) sleeved on the outside of the core rod (701). The core rod (701) is connected to the positioning core hole (901), and several insulator sleeves (702) are respectively located between adjacent horizontal rows (1).

10. An outdoor low-voltage cable branch box according to claim 8, characterized in that, The enclosure (13) includes a back plate (13a), a cover plate (13b), a side plate (13c), and an observation window plate (13d). The cover plate (13b) is openable, and the observation window plate (13d) is located on the cover plate (13b). The enclosure (13) is provided with a circuit breaker hole for installing the main circuit breaker (8) and a wiring hole (13e) for passing through the incoming cable and the branch outgoing cable. The circuit breaker bracket (11) is used to snap on and install the branch circuit breaker (5).

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