Double-door junction box with adjustable internal layout

Abstract

The invention relates to the technical field of double-door junction boxes, and discloses an internal layout adjustable double-door junction box, which comprises a box body, turnover covers are mounted on two sides of the box body through two torsion spring hinges, each turnover cover is of an L-shaped structure, and the two turnover covers and the box body form a closed structure. The box body is internally provided with a modularized adapter assembly for installing an adapter, two groups of modularized wire coiling assemblies for coiling and storing optical fibers, and a modularized optical splitter installation assembly for installing an optical splitter. According to the invention, the internal layout is flexible and adjustable, the modular design supports the increase and decrease of the number of wire coiling racks and adapter racks as required, adapts to different optical fiber requirements, avoids excessive installation waste, initially configures according to resident requirements, can synchronously expand associated components, can also accurately match and meet different installation scale requirements, and the wire coiling racks are flexibly spliced through caulking grooves and caulking rings, so that the installation efficiency is improved. And rapid dismounting operation of the optical fiber is realized.

Description

Technical Field

[0001] This invention relates to the field of double-door junction boxes, and more specifically to a double-door junction box with an adjustable internal layout. Background Technology

[0002] With the popularization of fiber optic communication technology, distribution boxes, as key equipment for centralized distribution, protection, and switching of fiber optic lines, are widely used in the construction of various communication networks. Currently, most double-door distribution boxes on the market adopt an integrated fixed structure design. The number and installation position of their core functional components, such as cable trays and adapter trays, are fixed during the manufacturing stage and cannot be adjusted according to actual usage needs after leaving the factory.

[0003] In practical applications, the fiber optic access requirements vary significantly in different scenarios. For example, small residential units have fewer fiber optic users and only need to be equipped with a small number of cable trays and adapter racks to meet their needs. However, when a household has multiple fiber optic needs, the number exceeds the original reserved installation quantity and cannot be adjusted as needed. If too many are installed initially, it will result in a waste of resources. Cable trays are mostly rigidly fixed, and the fiber optic cables are tangled and messy. When removing old fiber optic cables, they need to be untangled one by one, which is inefficient. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, this invention provides a double-door distribution box with an adjustable internal layout. This addresses the problems of existing distribution boxes often using a fixed layout, with preset quantities of internal adapters, cable trays, and splitters that cannot be adjusted as needed. When adding new optical fibers, insufficient reserved capacity often necessitates replacing the entire box, or excessive initial installations result in resource waste. Furthermore, cable trays are often rigidly fixed, leading to chaotic fiber entanglement and requiring individual untangling when removing old fibers, resulting in low efficiency.

[0005] This invention provides the following technical solution: a double-door splitter box with adjustable internal layout, comprising a box body, two flip covers mounted on both sides of the box body via two torsion spring hinges, the flip covers being L-shaped, the two flip covers forming a closed structure with the box body, the interior of the box body being provided with a modular adapter assembly for installing adapters, two sets of modular cable coiling assemblies for coiling and storing optical fibers, and a modular splitter mounting assembly for installing optical splitters, the bottom of the box body being provided with an open-type optical fiber fixing assembly for positioning and classifying optical fibers; The number of optical fibers assembled in the modular adapter assembly and the modular coil assembly corresponds proportionally to the number of optical splitters installed in the modular splitter mounting assembly. The modular splitter mounting assembly, two sets of modular cable coil assemblies, modular adapter assembly, and open-type fiber fixing assembly are arranged in sequence, and the L-shaped flip cover, when opened, avoids the modular splitter mounting assembly and the open-type fiber fixing assembly.

[0006] As a further embodiment of the present invention, the modular coiling assembly includes a coiling base installed on the inner wall of the housing and multiple coiling frames. A docking structure is provided between the multiple coiling frames and between the coiling frames and the coiling base. The coiling base has a constraint mechanism inside for pressing and fixing the multiple coiling frames. The outer wall of the coiling frame has a spiral coiling groove for winding optical fibers. The four corners of the coiling frame and on both sides of the spiral coiling groove are provided with elastic buckles for fastening the optical fibers installed in the spiral coiling groove.

[0007] As a further embodiment of the present invention, the docking structure includes a groove and a ring that cooperate with each other. The groove is opened on one side of the coil frame and the coil base, and the ring is located on the other side of the coil frame. The groove is provided with a foolproof section inside.

[0008] As a further embodiment of the present invention, the constraint mechanism includes a long screw threaded inside the coil base, a coil pressure plate for pressing the coil frame is sleeved on the outside of the long screw, a knob is fixedly connected to the end of the long screw, and a wing nut is threaded on the outside of the long screw and located between the knob and the coil pressure plate.

[0009] As a further embodiment of the present invention, the modular adapter assembly includes an adapter base and multiple adapter brackets, with a second docking structure provided between the multiple adapter brackets and between the adapter brackets and the adapter base, and at least eight adapters can be installed in the adapter bracket.

[0010] As a further embodiment of the present invention, the second docking structure includes a connecting groove and a connecting protrusion that cooperate with each other, as well as a quick-release buckle that cooperates with each other. The connecting groove is opened on one side of the adapter base and the adapter frame, and the connecting protrusion is located on the other side of the adapter frame. The quick-release buckle includes a male buckle and a female buckle that cooperate with each other. The male buckle is installed on the top and bottom of the adapter frame, and the female buckle is installed on the top and bottom of the adapter frame and the adapter base, respectively. One side of the male buckle is provided with an elastic fastener that can be inserted into the female buckle.

[0011] As a further embodiment of the present invention, the two semi-ring seats and the outer half-ring seat that cooperate with the open-type optical fiber fixing assembly are provided with at least eight positioning vertical grooves for installing and fastening optical fibers on the inner walls of both the inner and outer half-ring seats. The inner half-ring seat is fixedly connected to the bottom inner wall of the box. The bottom of the box is provided with three step plates, and the three step plates form an opening to allow the inner half-ring seat to be positioned. A pull-out side plate is inserted into the three step plates. The outer half-ring seat is installed inside the pull-out side plate. When the pull-out side plate and the step plate are closed, the outer half-ring seat contacts the inner half-ring seat and forms a ring seat. A locking mechanism is provided between the pull-out side plate and the step plate. Multiple equally spaced rubber strips are installed inside the inner half-ring seat and the outer half-ring seat near the bottom.

[0012] As a further embodiment of the present invention, the locking mechanism includes a pin seat fixedly connected to the bottom of the step plate located in the middle position, an internally threaded cylinder fixedly connected inside the pull-out side plate, an indexing pin internally threadedly connected to the internally threaded cylinder, and the bottom end of the indexing pin can pass through the pull-out side plate and the step plate and be inserted into the pin seat. The tail end of the pull-out side plate is provided with a snap groove for engaging with the three step plates.

[0013] As a further embodiment of the present invention, the modular beam splitter mounting assembly comprises two sets, each including an L-shaped plate fixedly connected to the inner wall of one side of the housing, and two sets of beam splitter mounting holes that cooperate with the beam splitter mounting on one side of the L-shaped plate.

[0014] As a further embodiment of the present invention, sealing rings are installed around the L-shaped inner walls of both flip covers, and the sealing rings can fit against the four edges of the box body.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention achieves flexible and adjustable internal layout. The modular design supports the addition or reduction of the number of cable trays and adapter trays as needed, adapts to different fiber optic requirements, avoids waste from excessive installation, is initially configured according to user requirements, and can simultaneously expand related components, and can also accurately match and meet different installation scale requirements.

[0016] 2. This invention improves operating space and convenience. The L-shaped flip cover automatically unfolds via a torsion spring hinge, avoiding the splitter and fiber optic fixing components, fully exposing the internal structure, increasing the working space, and facilitating operations such as fiber optic wiring by staff.

[0017] 3. The cable tray of the present invention is flexibly spliced ​​through slotted and ringed joints, and the anti-misfit section prevents incorrect installation; the constraint mechanism is firmly pressed in place, and the spiral cable tray and elastic buckle fix the optical fiber in an orderly manner, avoiding tangling and falling off, and improving the reliability of cable tray installation.

[0018] 4. This invention effectively solves the problem of densely packed and tangled optical fibers that are difficult to remove after installation by directly pulling out the optical fibers from the multiple coil racks where they need to be removed, then pulling out the coil rack where the optical fibers need to be removed, and then re-inserting the remaining multiple coil racks.

[0019] 5. The invention simplifies the fiber optic installation and removal process. The open-type fiber optic fixing assembly adopts a semi-open structure after the pull-out side plate is removed, with indexing pin locking and rubber soft strip protection. No drilling is required during installation and removal. The fiber optic cable can be directly installed into the positioning vertical slot, making the removal of old fiber optic cables more convenient and efficient. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 For the present invention Figure 1 A diagram showing the open state.

[0022] Figure 3 For the present invention Figure 2 The main view.

[0023] Figure 4 This is a schematic diagram of the modular beam splitter mounting assembly structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the modular coil assembly structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the constraint mechanism structure of the present invention.

[0026] Figure 7 This is a schematic diagram of the coil frame structure of the present invention.

[0027] Figure 8 For the present invention Figure 7 A schematic diagram of the rear structure.

[0028] Figure 9 This is a schematic diagram of the spiral disc groove structure of the present invention.

[0029] Figure 10 This is a schematic diagram of the modular adapter component structure of the present invention.

[0030] Figure 11 For the present invention Figure 10 A schematic diagram of its decomposed structure.

[0031] Figure 12 This is a schematic diagram of the quick-release buckle structure of the present invention.

[0032] Figure 13 This is a schematic diagram of the open-type optical fiber fixing assembly of the present invention.

[0033] Figure 14 For the present invention Figure 13 A diagram showing the open state.

[0034] Figure 15 For the present invention Figure 14 A schematic diagram of the bottom structure.

[0035] The attached diagram is labeled as follows: 1. Flip-top cover; 101. Sealing ring; 2. Torsion spring hinge; 3. Housing; 4. Modular adapter assembly; 5. Modular cable coil assembly; 6. Modular splitter mounting assembly; 7. Open-type fiber optic fixing assembly; 401. Adapter base; 402. Adapter bracket; 40201. Connecting groove; 40202. Connecting protrusion; 403. Quick-release buckle; 40301. Female buckle; 40302. Elastic fastener; 40303. Female buckle; 501. Cable reel base; 502. Cable reel bracket; 50201. Insert groove; 50202. Foolproof section; 50203. Insert ring; 50204. Spiral cable reel groove; 50205. Elastic buckle; 503. Cable reel pressure plate; 504. Long screw; 505. Wing nut; 506. Knob; 601, L-shaped plate; 602, beam splitter mounting hole; 701. Inner half-ring seat; 702. Outer half-ring seat; 703. Rubber strip; 704. Pull-out side plate; 705. Indexing pin; 706. Internal threaded cylinder; 707. Step plate; 708. Thread groove; 709. Pin seat; 710. Positioning vertical groove. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Reference Figures 1-15This invention provides a double-door splitter box with adjustable internal layout, including a box body 3. Two flip covers 1 are installed on both sides of the box body 3 via two torsion spring hinges 2. The flip covers 1 are L-shaped structures. The two flip covers 1 and the box body 3 form a closed structure. Sealing rings 101 are installed around the L-shaped inner walls of the two flip covers 1, and the sealing rings 101 can fit against the four edges of the box body 3. The interior of the box body 3 is provided with a modular adapter assembly 4 for installing adapters, two sets of modular cable coiling assemblies 5 for coiling and storing optical fibers, and a modular splitter mounting assembly 6 for installing optical splitters. The bottom of the box body 3 is provided with an open-type optical fiber fixing assembly 7 for positioning and classifying optical fibers. The number of optical fibers assembled in the modular adapter assembly 4 and the modular cable coil assembly 5 corresponds proportionally to the number of optical splitters installed in the modular splitter mounting assembly 6. If a splitter has 8 ports, it corresponds to 8 cable trays 502, 8 adapters, and 8 positioning slots 710; With a maximum installation limit of 4 splitters, it can accommodate 32 cable trays, 32 adapters, and 32 positioning vertical slots 710. During the initial installation phase, the corresponding optical splitters, cable trays 502, adapters, etc. are installed according to the needs of the residents on each floor. When adding new adapters (such as when a household has multiple fiber optic needs, which exceeds the original reserved installation quantity), optical splitters, cable trays 502, adapters, etc. need to be added simultaneously.

[0038] The modular splitter mounting assembly 6, two sets of modular cable coil assemblies 5, the modular adapter assembly 4, and the open-type fiber optic fixing assembly 7 are arranged sequentially, and the L-shaped flip cover 1, when opened, avoids the modular splitter mounting assembly 6 and the open-type fiber optic fixing assembly 7 (e.g., Figure 2 As shown in the figure, after the two flip covers 1 are opened, the flip covers 1 automatically unfold outward under the torsion of the torsion spring hinge 2 until the L-shaped top corners of the two flip covers 1 contact and block the wall. At this time, the modular splitter installation assembly 6, the two sets of modular cable coil assemblies 5, the modular adapter assembly 4 and the open-type fiber optic fixing assembly 7 inside the box 3 are fully exposed, increasing the operating space for the staff and making it easier for the staff to perform fiber optic wiring and other operations.

[0039] The modular coil assembly 5 in this invention (e.g.) Figures 5-9As shown, the cable tray 501 is installed on the inner wall of the housing 3 and multiple cable trays 502. A docking structure is provided between the multiple cable trays 502 and between the cable trays 502 and the cable tray 501. The docking structure includes a groove 50201 and a ring 50203 that cooperate with each other. The groove 50201 is opened on one side of the cable tray 502 and the cable tray 501, and the ring 50203 is located on the other side of the cable tray 502. The groove 50201 is provided with a foolproof section 50202 inside. The groove 50201, the foolproof section 50202 and the ring 50203 of the cable tray 502 are integrally formed. The cable reel base 501 has an internal constraint mechanism for pressing and fixing multiple cable reel frames 502. The constraint mechanism includes a long screw 504 threaded inside the cable reel base 501. A cable reel pressure plate 503 for pressing the cable reel frame 502 is fitted around the outside of the long screw 504. A knob 506 is bolted to the end of the long screw 504. A wing nut 505 is threaded onto the outside of the long screw 504, located between the knob 506 and the cable reel pressure plate 503. The outer wall of the cable reel frame 502 has a spiral cable reel groove 50204 for optical fiber winding (e.g., ...). Figure 9 As shown, elastic buckles 50205 are provided at the four corners of the cable tray 502 and on both sides of the spiral cable tray 50204 to fasten the optical fibers installed in the spiral cable tray 50204.

[0040] Specifically, this design of the modular coil assembly 5 allows the coil frame 502 to be flexibly installed on the coil base 501 through the cooperation of the slot 50201 and the ring 50203, and multiple coil frames 502 can also be spliced ​​together through the same docking structure, thereby adjusting the number and position of the coil frames 502 according to actual needs.

[0041] The design of the foolproof section 50202 effectively avoids incorrect splicing of the cable tray 502 during installation, improving installation efficiency and accuracy.

[0042] Meanwhile, the constraint mechanism, through the cooperation of the long screw 504, the coil pressure plate 503, the knob 506 and the wing nut 505, can firmly press and fix multiple coil frames 502 onto the coil base 501, ensuring the stability of the coil assembly; the long screw 504 is threaded onto the coil base 501, therefore, the long screw 504 can also be disassembled.

[0043] The design of the spiral coiled cable tray 50204 allows the optical fiber to be coiled in an orderly manner on the cable tray 502, avoiding the tangling and twisting of the optical fiber; while the elastic buckle 50205 further fixes the optical fiber installed in the spiral coiled cable tray 50204, preventing the optical fiber from falling off or loosening.

[0044] Modular adapter component 4 in this invention (e.g. Figures 10-12 As shown, the adapter includes an adapter base 401 and multiple adapter brackets 402. A second docking structure is provided between the multiple adapter brackets 402 and between the adapter brackets 402 and the adapter base 401. The second docking structure includes a connecting groove 40201 and a connecting protrusion 40202 that cooperate with each other, as well as a quick-release buckle 403 that cooperates with each other. The connecting groove 40201 is located on one side of the adapter base 401 and the adapter brackets 402, and the connecting protrusion 40202 is located on the other side of the adapter brackets 402. The adapter brackets 402 are integrally formed with the connecting groove 40201 and the connecting protrusion 40202, while the quick-release buckle 403 is installed and fixed to the adapter brackets 402 by screws.

[0045] Specifically, the adapter bracket 402 is connected to the adapter base 401 via the connecting slot 40201 and the connecting protrusion 40202.

[0046] And quick-release clip 403 (such as Figure 12 As shown, it includes a male buckle 40301 and a female buckle 40303 that cooperate with each other. The male buckle 40301 is installed on the top and bottom of the adapter frame 402, and the female buckle 40303 is installed on the top and bottom of the adapter frame 402 and the adapter base 401, respectively. One side of the male buckle 40301 is provided with an elastic fastener 40302 that can be inserted into the female buckle 40303, thereby realizing the quick connection and fastening of the male buckle 40301 and the female buckle 40303. By pressing the elastic fastener 40302, the elastic fastener 40302 is disengaged from the female buckle 40303.

[0047] Therefore, the adapter bracket 402 is fixed to the adapter base 401 after being connected by the quick-release buckle 403; An adapter rack 402 can hold at least eight adapters. When an adapter needs to be added, only a new adapter rack 402 needs to be installed and fixed by connecting it to the quick-release buckle 403 through the docking structure 2, thereby increasing the number of adapters that can be installed to 16. Similarly, the two sets of modular adapter assemblies 4 can install a total of 32 adapters.

[0048] Therefore, the cable tray 502 and adapter tray 402 can be adjusted according to actual needs, so that the overall layout inside the box 3 can be adjusted according to the actual situation, which can not only meet the installation requirements, but also reduce the waste of resources caused by multiple installations.

[0049] The open-type optical fiber fixing component 7 in this invention (e.g.) Figures 13-15(As shown) Two semi-ring seats, inner 701 and outer 702, are fitted together. At least eight vertical positioning slots 710 are provided on the inner walls of both the inner and outer semi-ring seats 701 and 702 for mounting and engaging optical fibers. The inner semi-ring seat 701 is fixed to the bottom inner wall of the housing 3 by bolts. The bottom of the housing 3 has three step plates 707, forming an opening between them to allow the inner semi-ring seat 701 to be positioned. A pull-out side plate 704 is inserted into each of the three step plates 707. The outer semi-ring seat 702 is installed inside the pull-out side plate 704. When the pull-out side plate 704 and the step plates 707 are closed, the outer semi-ring seat 702 contacts the inner semi-ring seat 701 and forms a... The ring seat has a locking mechanism between the pull-out side plate 704 and the step plate 707. The locking mechanism includes a pin seat 709 welded to the bottom of the step plate 707 located in the middle position. An internal threaded cylinder 706 is welded inside the pull-out side plate 704. The internal threaded cylinder 706 is internally threaded and connected to an indexing pin 705. The bottom end of the indexing pin 705 can pass through the pull-out side plate 704 and the step plate 707 and be inserted into the pin seat 709. The tail end of the pull-out side plate 704 has a snap groove 708 for engaging with the three step plates 707. Multiple equally spaced rubber strips 703 are installed inside the semi-ring seat 701 and outside the semi-ring seat 702 near the bottom.

[0050] Specifically, the inner 701 of the semi-ring seat is firmly fixed to the bottom inner wall of the housing 3 by bolts. At this time, the opening formed by the three step plates 707 provides the inner 701 of the semi-ring seat with clearance space.

[0051] When it is necessary to install the optical fiber, pull out the pull-out side panel 704 from the step plate 707. Then, the optical fiber is inserted from the opening formed by the three step plates 707 into the positioning vertical groove 710 opened in the semi-ring seat 701, and then the pull-out side plate 704 is re-inserted into the step plate 707.

[0052] At this point, a locking mechanism is used to lock the pin, which rotates the indexing pin 705 inside the internal threaded cylinder 706 so that its bottom end passes through the pull-out side plate 704 and the step plate 707 and is inserted into the pin seat 709. At the same time, the snap groove 708 of the tail section of the pull-out side plate 704 is engaged with the three step plates 707, further enhancing stability.

[0053] The multiple equally spaced rubber strips 703 installed inside the semi-ring seat 701 and near the bottom of the semi-ring seat 702 allow the optical fiber to be inserted between two adjacent rubber strips 703, and play a soft limiting and protection role after the optical fiber is installed.

[0054] Therefore, the open-type fiber optic fixing assembly 7 facilitates the installation of optical fibers, avoiding the existing practice of inserting and fixing optical fibers through bottom holes, which is not only cumbersome but also extremely inefficient.

[0055] Especially when disassembling and assembling old optical fibers, the modular cable reel assembly 5 and the open-type optical fiber fixing assembly 7 are more convenient, specifically in the following ways: In existing methods, when removing the optical fiber wound on a coil frame 502, the dense arrangement of the installed optical fibers makes it difficult to remove the wound fiber. However, this invention can remove the coil pressure plate 503 from the coil frame 502, and simultaneously unscrew and remove the long screw 504 in the opposite direction, and then directly pull out the coil frame 502 from which the optical fiber needs to be removed, greatly reducing the time required to remove a single optical fiber winding among multiple dense optical fibers.

[0056] When installing or removing a fiber optic cable from the positioning vertical slot 710, the locking state of the pull-out side plate 704 is released simply by rotating the indexing pin 705 counterclockwise, and the pull-out side plate 704 is pulled out. This leaves both the inner half of the semi-ring seat 701 and the outer half of the semi-ring seat 702 in a semi-open state, making it easier for workers to directly install or remove the fiber optic cable that is held in the positioning vertical slot 710, reducing the cumbersome operation of inserting cables required by the existing perforated structure.

[0057] The modular beam splitter mounting assembly 6 in this invention consists of two sets. The modular beam splitter mounting assembly 6 includes an L-shaped plate 601 that is fixed to the inner wall of one side of the housing 3 by bolts. One side of the L-shaped plate 601 is provided with two sets of beam splitter mounting holes 602 that cooperate with the beam splitter installation. That is, one set of beam splitter mounting holes 602 has 4 holes. Therefore, one L-shaped plate 601 can install two beam splitters, and two L-shaped plates 601 can install four beam splitters.

[0058] It should be noted that the butterfly nut 505, long screw 504, and coil base 501 used in this application are all provided with annular grooves in their installation positions and the internal threaded cylinder 706. A nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the threaded rod surface at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68 (tested according to ASTM D1894 standard), thereby effectively suppressing loosening displacement caused by thread springback.

[0059] The present invention is used in the following steps: S1: When adding optical fiber, a splitter is added to the L-shaped plate 601, and then an adapter bracket 402 is added. At this time, the two adapter brackets 402 are connected by the connecting groove 40201 and the connecting protrusion 40202, and the two adapter brackets 402 are fixed after being connected by the quick-release buckle 403. S2: At the same time, a coil frame 502 needs to be added according to actual needs. When adding the coil frame 502, the coil pressure plate 503 needs to be released from its limit on the coil frame 502. Then, the added coil frame 502 is connected and installed with the existing coil frame 502 through the docking structure. Then, the positions of the wing nut 505 and the coil pressure plate 503 are readjusted, and the coil pressure plate 503 is tightened again to complete the pressing and fixing operation of the installed coil frame 502 by the wing nut 505. S3: Then, by rotating the indexing pin 705 counterclockwise, the locking state of the pull-out side plate 704 is released, and the pull-out side plate 704 is pulled out, so that both the inner half of the semi-ring seat 701 and the outer half of the semi-ring seat 702 are in a semi-open state, which makes it easy for the staff to directly install the optical fiber into the positioning vertical groove 710. After the installation is completed, the pull-out side plate 704 is reassembled and locked again by the indexing pin 705. S4: When removing the old optical fiber, release the limit of the coil clamp 503 on the coil frame 502, and at the same time, turn and remove the long screw 504 in the opposite direction. Then, pull it directly from the position of the multiple coil frames 502 where the optical fiber needs to be removed. Next, pull out the coil frame 502 where the optical fiber needs to be removed. Then, reinsert the remaining multiple coil frames 502 and reinstall them. Then, turn the wing nut 505 to make the coil clamp 503 complete the pressing and fixing operation of the installed coil frame 502. S5: At the same time, the fiber optic connection end of the modular adapter assembly 4 needs to be pulled out, and the fiber optic cable inside the open fiber optic fixing assembly 7 needs to be removed. At this time, the locking state of the pull-out side plate 704 is released by rotating the indexing pin 705 counterclockwise, and the pull-out side plate 704 is pulled out, so that both the inner half of the semi-ring seat 701 and the outer half of the semi-ring seat 702 are in a semi-open state, which makes it easy for the staff to directly install and remove the fiber optic cable stuck in the positioning vertical groove 710.

[0060] S6: At this point, the removal of the old optical fiber is complete.

[0061] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this invention can all be commonly used parts on the market that can achieve the specific functions in this case, and the specific models and sizes can be selected and adjusted according to actual needs; The accompanying drawings of the embodiments disclosed in this invention only involve structures relevant to the embodiments disclosed in this invention. Other structures can be referred to with common designs. Unless otherwise specified, the same embodiment and different embodiments of this invention can be combined with each other.

Claims

1. A double door distribution box with adjustable internal layout, comprising a box body (3), both sides of the box body (3) are installed with a flip cover (1) through two torsion spring hinges (2), characterized in that: The turnover cover (1) is of L-shaped structure, two turnover covers (1) and the box body (3) form a closed structure, the inside of the box body (3) is provided with a modular adapter assembly (4) for installing adapters, two groups of modular wire winding assemblies (5) for winding and storing optical fibers, and a modular optical splitter mounting assembly (6) for installing optical splitters, the bottom of the box body (3) is provided with an open optical fiber fixing assembly (7) for positioning and classifying optical fibers; The number of assembled optical fibers of the modular adapter assembly (4) and the modular wire winding assembly (5) is proportional to the number of optical splitters installed by the modular optical splitter mounting assembly (6); The modular optical splitter mounting assembly (6), two groups of modular wire winding assemblies (5), the modular adapter assembly (4) and the open optical fiber fixing assembly (7) are sequentially distributed, and the opened L-shaped turnover cover (1) forms an avoidance for the modular optical splitter mounting assembly (6) and the open optical fiber fixing assembly (7).

2. The internally adjustable double door distribution box of claim 1, wherein: The modular wire winding assembly (5) comprises a wire winding base (501) mounted on the inner wall of the box body (3) and a plurality of wire winding racks (502), an interfacing structure one is arranged between the plurality of wire winding racks (502) and between the wire winding rack (502) and the wire winding base (501), the inside of the wire winding base (501) is provided with a constraint mechanism for press-fitting and fixing the plurality of wire winding racks (502), a helical wire winding groove (50204) for winding optical fibers is formed in the outer wall of the wire winding rack (502), and an elastic buckle (50205) for buckling the optical fiber installed in the helical wire winding groove (50204) is arranged at the four corners of the wire winding rack (502) and at both sides of the helical wire winding groove (50204).

3. A dual access door distribution box with adjustable internal layout according to claim 2, characterized in that: The interfacing structure one comprises a slot (50201) and a ring (50203) matched with each other, the slot (50201) is formed on one side of the wire winding rack (502) and the wire winding base (501), the ring (50203) is arranged on the other side of the wire winding rack (502), and a foolproof section (50202) is arranged in the inside of the slot (50201).

4. The internally adjustable double door distribution box of claim 3, wherein: The constraint mechanism comprises a long screw (504) screwed in the inside of the wire winding base (501), a wire winding pressing plate (503) for press-fitting the wire winding rack (502) is arranged on the outside of the long screw (504), a knob (506) is fixedly connected to the end of the long screw (504), and a butterfly nut (505) is screwed on the outside of the long screw (504) and between the knob (506) and the wire winding pressing plate (503).

5. The internally adjustable double door distribution box of claim 1, wherein: The modular adapter assembly (4) comprises an adapter base (401) and a plurality of adapter racks (402), an interfacing structure two is arranged between the plurality of adapter racks (402) and between the adapter rack (402) and the adapter base (401), and at least eight adapters can be installed in the adapter rack (402).

6. A dual access enclosure with adjustable internal layout according to claim 5, characterized in that: The docking structure two includes the connecting groove (40201) and the connecting block (40202) matched with each other, and the quick release buckle (403) matched with each other, the connecting groove (40201) is opened in the adapter base (401) and one side of the adapter frame (402), the connecting block (40202) is arranged at the other side of the adapter frame (402), the quick release buckle (403) includes the sub-buckle (40301) and the female buckle (40303) matched with each other, the sub-buckle (40301) is installed at the top and the bottom of the adapter frame (402), the female buckle (40303) is installed at the top and the bottom of the adapter frame (402) and the adapter base (401) respectively, one side of the sub-buckle (40301) is provided with the elastic buckle (40302) that can be inserted into the female buckle (40303) inside.

7. The internally adjustable double door distribution box of claim 1, wherein: The opening type optical fiber fixing assembly (7) is matched with two half ring seats (701) and (702), the inner wall of the half ring seat (701) and (702) is provided with at least eight positioning vertical grooves (710) for installing and buckling the optical fiber, the half ring seat (701) is fixedly connected to the bottom inner wall of the box body (3), the bottom of the box body (3) is provided with three segment difference plates (707), the three segment difference plates (707) form an opening for avoiding the half ring seat (701), the three segment difference plates (707) are provided with pull-out side plates (704), the half ring seat (702) is installed in the pull-out side plate (704), when the pull-out side plate (704) is closed with the segment difference plate (707), the half ring seat (702) is in contact with the half ring seat (701) and forms a ring seat, the pull-out side plate (704) and the segment difference plate (707) are provided with a locking mechanism, and a plurality of rubber soft strips (703) are installed in the half ring seat (701) and the half ring seat (702) and close to the bottom end position.

8. A dual access door distribution box of claim 7, wherein: The locking mechanism includes a pin seat (709) fixedly connected to the bottom of the segment difference plate (707) at the middle position, the inside of the pull-out side plate (704) is fixedly connected with an internal thread cylinder (706), the internal thread cylinder (706) is screwed with a division pin (705), and the bottom end of the division pin (705) can pass through the pull-out side plate (704) and the segment difference plate (707) and be inserted into the pin seat (709), and the tail end of the pull-out side plate (704) is provided with a buckle groove (708) buckled with the three segment difference plates (707).

9. The internally adjustable double door distribution box of claim 1, wherein: The modular optical splitter mounting assembly (6) is two groups, the modular optical splitter mounting assembly (6) includes an L-shaped plate (601) fixedly connected to the inner wall of one side of the box body (3), and the L-shaped plate (601) is provided with two groups of optical splitter mounting holes (602) matched with the optical splitter mounting.

10. The internally adjustable double door distribution box of claim 1, wherein: The L-shaped inner wall of the two flip covers (1) is provided with a sealing ring (101) around, and the sealing ring (101) can be attached to the periphery of the box body (3).

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