Optical fiber distribution box

Abstract

The utility model discloses a kind of optical fiber distribution box, it relates to optical fiber communication technical field, the optical fiber distribution box includes box, tray and fusion fiber box, accommodating cavity is formed in box, opening is also formed on box, opening is connected with accommodating cavity and external space;One end of tray is hinged in accommodating cavity;Fusion fiber box is located in tray;Wherein, tray can be rotated relative to box to make fusion fiber box be stored in accommodating cavity or stretch out from opening.Through hinging tray in accommodating cavity in box, and fusion fiber box is located on tray, tray can drive fusion fiber box to rotate when rotating, when storing, tray and fusion fiber box are rotated to accommodating cavity, the compact storage space of adaptation optical fiber distribution box is realized, when needing to carry out fusion fiber etc. Operation, rotate tray and fusion fiber box, so that fusion fiber box stretches out from opening to external space, provide greater operating space, improve the convenience of fusion fiber etc. Operation, in this way, realize the compact storage space of adaptation and the convenience of fusion fiber etc. Operation.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication technology, and in particular to an optical fiber distribution box. Background Technology

[0002] Fiber optic distribution boxes are key equipment in FTTH (Fiber to the Home) and FTTB (Fiber to the Building) networks to solve the problem of insufficient fiber cores. They are mainly used for connecting distribution optical cables and drop optical cables and for optical signal distribution. They are suitable for various indoor and outdoor installation methods (wall-mounted, pole-mounted, etc.) and have a modular structure, including functional modules for optical cable fixing, splicing, and adapter management.

[0003] In wall-mounted installations, fiber optic distribution boxes are typically shallow to avoid excessive protrusion and encroachment on external space. To increase capacity, fusion splice boxes are designed to be deeper than the fiber optic distribution box. Therefore, fusion splice boxes are vertically positioned and either fixedly or detachably connected to the fiber optic distribution box to accommodate its shallow depth and relatively high height. However, the vertical placement of the fusion splice box makes splicing and winding operations inconvenient. Due to capacity requirements and manufacturing cost considerations, the operating space for splicing is limited. Furthermore, opening the fixed fusion splice box significantly reduces internal space, requiring sufficient space to be considered during cabling. For these reasons, traditional fiber optic distribution boxes present a significant trade-off between compact internal layout and ease of operation. Utility Model Content

[0004] The main purpose of this invention is to propose an optical fiber distribution box that aims to solve the problem that the fiber splicing tray of the optical fiber distribution box is difficult to adapt to both compact storage space and easy fiber splicing operations.

[0005] To achieve the above objectives, the fiber optic distribution box proposed in this utility model includes a box body, a tray, and a fusion splice box. The box body has a receiving cavity, and the box body also has an opening that connects the receiving cavity to the external space. One end of the tray is hinged to the receiving cavity. The fusion splice box is disposed on the tray. The tray can rotate relative to the box body to allow the fusion splice box to be stored in the receiving cavity or extend out from the opening.

[0006] In one embodiment, the tray has a stowed state and an unfolded state; in the stowed state, the tray is vertically positioned and housed within the receiving cavity; in the unfolded state, the tray is horizontally positioned and extends out of the opening, and the tray abuts against the bottom wall of the receiving cavity.

[0007] In one embodiment, the tray is provided with a first locking part, and the side wall of the opening is provided with a second locking part; in the stored state, the first locking part is connected to the second locking part; in the unfolded state, the first locking part is disengaged from the second locking part.

[0008] In one embodiment, the fiber optic distribution box includes a plurality of fusion splice boxes, which are stacked on the tray, and each fusion splice box is hinged to the tray.

[0009] In one embodiment, the fiber fusion box is provided with a first hinge portion, the tray is fixedly provided with a hinge base, and the hinge base is provided with a second hinge portion; of the first hinge portion and the second hinge portion, one is a hinge shaft, and the other is a hinge notch; the hinge shaft is detachably hinged to the inner wall of the hinge notch.

[0010] In one embodiment, the hinged base has multiple stepped portions, and each stepped portion is provided with a second hinge portion.

[0011] In one embodiment, the hinge base is further provided with a first binding part, and the side of the fiber fusion box facing away from the first hinge part is provided with a second binding part.

[0012] In one embodiment, the fiber optic distribution box further includes a hinged bracket, which is detachably fixed to the bottom wall of the receiving cavity, and one end of the tray is connected to the hinged bracket.

[0013] In one embodiment, the fiber optic distribution box further includes a partition plate, which is fixedly disposed in the receiving cavity and divides the receiving cavity into a fiber storage cavity and a fiber fusion cavity. Both the fiber storage cavity and the fiber fusion cavity are connected to the opening. One end of the tray is hinged to the fiber fusion cavity. A fiber storage column is provided in the fiber storage cavity. The partition plate is provided with an adapter mounting hole that connects the fiber storage cavity and the fiber fusion cavity.

[0014] In one embodiment, the fiber optic distribution box further includes a door panel, which is hinged to the box body. The door panel can rotate relative to the box body to cover the opening or expose the opening. The door panel is provided with a sealing element, which seals the periphery of the opening when the door panel covers the opening.

[0015] The fiber optic distribution box proposed in this utility model includes a box body, a tray, and a fusion splice box. A receiving cavity is formed inside the box body, and an opening is formed on the box body, connecting the receiving cavity to the external space. One end of the tray is hinged to the receiving cavity. The fusion splice box is placed on the tray. The tray can rotate relative to the box body to allow the fusion splice box to be stored in the receiving cavity or extend from the opening. By hinged the tray to the receiving cavity inside the box body and placing the fusion splice box on the tray, the rotation of the tray can drive the fusion splice box to rotate. During storage, the tray and fusion splice box are rotated into the receiving cavity, achieving a compact storage space suitable for the fiber optic distribution box. When fusion splicing or other operations are required, rotating the tray and fusion splice box allows the fusion splice box to extend from the opening into the external space, providing more space for fusion splicing and other operations, improving the convenience of these operations. Thus, it achieves a balance between adapting to a compact storage space and facilitating fusion splicing and other operations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a structural embodiment of the fiber optic distribution box provided by this utility model; Figure 2 for Figure 1 Front view of the fiber optic distribution box; Figure 3 for Figure 1 Top view of the fiber optic distribution box; Figure 4 for Figure 1 A schematic diagram of the structure of the middle tray and the fiber fusion box.

[0018] Explanation of icon numbers: 100. Fiber optic distribution box; 1. Housing; 1a. Receiving cavity; 1a1. Fiber melting cavity; 1a2. Fiber storage cavity; 1b. Opening; 11. Second locking part; 2. Tray; 21. First locking part; 22. Hinge base; 22a. Hinge notch; 221. Stepped part; 222. First binding part; 3. Fiber fusion splice box; 31. Hinge shaft; 32. Second binding part; 4. Hinged bracket; 5. Divider plate; 5a. Adapter mounting hole; 6. Fiber storage column; 7. Door panel; 71. Sealing components.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions 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. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model proposes an optical fiber splitter box 100.

[0024] Please see Figures 1 to 3 In one embodiment of the present invention, the fiber optic distribution box 100 includes a box body 1, a tray 2, and a fiber fusion box 3. A receiving cavity 1a is formed inside the box body 1, and an opening 1b is also formed on the box body 1, which connects the receiving cavity 1a with the external space. One end of the tray 2 is hinged to the receiving cavity 1a. The fiber fusion box 3 is disposed on the tray 2. The tray 2 can rotate relative to the box body 1 so that the fiber fusion box 3 is housed in the receiving cavity 1a or extends out from the opening 1b.

[0025] In this embodiment, the housing 1 is a rectangular thin-walled structure with an internal rectangular receiving cavity 1a. A rectangular opening 1b is formed on the front panel of the housing 1. Exemplarily, to allow the tray 2 to be hinged within the receiving cavity 1a, a metal pivot seat can be provided on the bottom plate of the housing 1. The pivot seat is a stamped U-shaped lug with light holes punched in it. A bushing is pressed into the hole, and the inner diameter of the bushing is clearance-fitted with the pivot of the tray 2 to ensure smooth rotation and prevent loosening over a long period. The tray 2 is a rectangular plate, with a length slightly less than the height of the inner cavity of the housing 1 and a width slightly less than the width of the opening 1b. The plate thickness ensures that no significant bending occurs when the fiber optic cable fusion box 3 is fully loaded with optical cables. Short round shafts extend integrally from both sides of the rear end of the tray 2. These shafts are directly inserted into the aforementioned bushings, forming a hinged connection, allowing the tray 2 to be flipped into or out of the receiving cavity 1a. After flipping, the fiber optic cable fusion box 3 is completely exposed outside the housing 1. The fiber optic cable fusion box 3 can be connected and fixed to the tray 2 by screws or clips. The fusion splice box 3 is equipped with a winding post (not shown in the attached diagram) for coiling pigtails. When the tray 2 flips inward to return to its original position, the fusion splice box 3 rotates into the receiving cavity 1a along with the tray 2. At this time, the tray 2 can be vertically positioned or at a certain angle to the vertical direction; this embodiment does not limit this. A certain gap is maintained between the outer surface of the fusion splice box 3 lid and the back plate of the box body 1 to prevent the optical fiber from being squeezed when the door is closed. When maintenance is required, the door panel 7 is opened, the tray 2 is rotated outward, the tray 2 flips down around its axis, and the fusion splice box 3 is fully extended. At this time, the tray 2 can be at a certain angle to the horizontal plane or parallel to the horizontal plane; this embodiment does not limit this. After the tray 2 is unfolded, the operator can perform fusion splicing, winding, and testing without obstruction, and there is no need to reserve space for flipping the lid inside the box; after completion, the tray 2 can be pushed back and the door closed, achieving a balance between adapting to compact storage space and facilitating operations such as fusion splicing.

[0026] Further, please refer to Figures 1 to 3 In one embodiment of the present invention, the tray 2 has a stored state and an unfolded state; in the stored state, the tray 2 is vertically arranged and housed in the receiving cavity 1a; in the unfolded state, the tray 2 is horizontally arranged and extends out of the opening 1b, and the tray 2 abuts against the bottom wall of the receiving cavity 1a.

[0027] In this embodiment, the flipping angle of tray 2 is limited by the bottom surface of the housing 1. It stops when the bottom surface of tray 2 abuts against the lower edge of opening 1b, at which point tray 2 is in a horizontal cantilever state, i.e., the unfolded state. A stop post can be provided on the top surface of tray 2, slightly higher than the top wall of the fusion splice box 3. When tray 2 is retracted into the receiving cavity 1a, the stop post abuts against the back plate of the receiving cavity 1a, keeping tray 2 vertical and preventing the fusion splice box 3 from being compressed. Vertical storage allows the fusion splice box 3 to adapt to the internal space of housing 1, minimizing the thickness of housing 1 in its design. When unfolded horizontally, tray 2 becomes an extended workbench, and the optical fibers and fiber winding trays inside the fusion splice box 3 are all within the operator's easy-to-operate range. The space for finger and tool movement is provided by the free area on the outside of the wall, completely eliminating the interference problem of flipping the lid inside the housing, and achieving a balance between adapting to compact storage space and facilitating operations such as fiber splicing.

[0028] Further, please refer to Figures 1 to 3 In one embodiment of the present invention, the tray 2 is provided with a first locking part 21, and the side wall of the opening 1b is provided with a second locking part 11; in the storage state, the first locking part 21 is connected to the second locking part 11; in the unfolded state, the first locking part 21 is disengaged from the second locking part 11.

[0029] To prevent the tray 2 from tipping over due to vibration or accidental contact when in the stored state, and to allow for quick unlocking, in this embodiment, the first locking part 21 is a captive screw, and the second locking part 11 is a screw hole. Specifically, the end of the tray 2 away from the hinge axis 31 has a folded edge parallel to the side wall of the opening 1b. A captive screw passes through the folded edge, and a screw hole is provided on the side wall of the opening 1b. When the tray 2 is in the stored state, the captive screw is screwed into the screw hole to lock the tray 2. Unlocking is achieved by loosening the captive screw to disengage it from the screw hole. Alternatively, the first locking part 21 and the second locking part 11 can also use two magnetic components or one magnetic component and a magnetically conductive component that can be attracted by the magnetic component. Furthermore, the first locking part 21 and the second locking part 11 can also use mechanical latches, etc., which are not limited in this embodiment.

[0030] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, the fiber optic distribution box 100 includes a plurality of fiber splicing boxes 3, which are stacked on a tray 2, and each fiber splicing box 3 is hinged to the tray 2.

[0031] In this embodiment, multiple layers of fiber fusion boxes 3 are provided on the tray 2 to increase the capacity of the fiber distribution box. Each layer of fiber fusion box 3 is connected to the tray 2 through its own independent hinge pair, allowing each layer to be opened upwards independently, thereby reducing the obstruction of the lower layer by the upper layer of fiber fusion box 3. Exemplarily, two hinge posts of a certain height can be fixedly provided on the top surface of the tray 2, with hinge holes provided on the two opposite side walls of the two hinge posts. Two hinge protrusions are coaxially provided on the opposite side walls of each fiber fusion box 3, and each protrusion can be inserted into a hinge hole to form a hinge pair.

[0032] Further, please refer to Figure 4 In one embodiment of the present invention, the fiber fusion box 3 is provided with a first hinge part, the tray 2 is fixedly provided with a hinge base 22, and the hinge base 22 is provided with a second hinge part; one of the first hinge part and the second hinge part is a hinge shaft 31, and the other is a hinge notch 22a; the hinge shaft 31 is detachably hinged to the inner wall of the hinge notch 22a.

[0033] In this embodiment, a quick-release hinge is provided between the fusion splice box 3 and the tray 2, allowing each fusion splice box 3 to be independently flipped and to be disassembled and reassembled by hand without tools during expansion or replacement. Specifically, two fixing blocks protrude outward from the side wall of the fusion splice box 3, forming a short cylindrical shaft between the two fixing blocks, which is the first hinge. A hinge base 22 is fixed at the corresponding position on the tray 2. A small injection-molded ear block protrudes from each side of the hinge base 22. A C-shaped hinge notch 22a is opened on the upper edge of the ear block. The width of the notch is slightly smaller than the diameter of the short shaft. The ear block is made of elastic material, and the short shaft can be inserted into the hinge notch 22a and rotated. During installation, simply align the short shaft of the fusion splice box 3 with the hinge notch 22a and press lightly. The shaft will be inserted into the hinge notch 22a, and the two sides of the bottom hinge notch 22a will elastically open and spring back, completing the positioning. At this time, the fusion splice box 3 can be flipped around the short shaft. When replacement or expansion is needed, simply pry the fiber fusion box 3 outwards, and the short shaft will come out from the hinge notch 22a, allowing the entire assembly to be removed.

[0034] Further, please refer to Figure 4 In one embodiment of the present invention, the hinged base 22 has multiple stepped portions 221, and each stepped portion 221 is provided with a second hinge portion.

[0035] In this embodiment, the hinged base 22 is provided with multiple steps, the width of which is equal to or slightly greater than the thickness of the fiber optic box 3. Each step has an independent lug along its upper edge, and the lug has a hinge notch 22a, so that the upper fiber optic box 3 can be completely suspended outside the steps after being flipped up, thus providing zero obstruction to the lower box. Specifically, the hinged base 22 can be a single injection-molded part, which rises step by step along the height direction to form several horizontal steps. The tread width of each step is equal to or slightly greater than the thickness of the fiber optic box 3, and each step has a lug on its tread surface. The thickness of the lug meets the rigidity requirements, and a C-shaped notch is opened at the upper end of the lug. This structure utilizes the natural vertical misalignment created by the step width. When the upper fiber optic box 3 is flipped up, the lower fiber optic box 3 is completely exposed, facilitating operations such as fiber optic melting.

[0036] Further, please refer to Figure 4 In one embodiment of the present invention, the hinge base 22 is further provided with a first binding part 222, and the side of the fiber fusion box 3 facing away from the first hinge part is provided with a second binding part 32.

[0037] In this embodiment, a quick-tying corresponding part is added between the hinge base 22 and the fusion splice box 3, so that the fusion splice box 3 can be temporarily fixed after being flipped up, preventing accidental fall. Specifically, a protruding tongue extends from the top surface of the step portion 221 of the highest layer of the hinge base 22, with a hole in the center of the protruding tongue, forming the first tying part 222; another protruding tongue with a hole extends from the side of each fusion splice box 3 facing away from the hinge shaft 31. To accommodate the shape of the cable tie, the hole can be set as a flat hole, or a notch can be further provided on one side of the hole to allow the annular cable tie to be inserted. During maintenance, the upper fusion splice box 3 is flipped up, and the cable tie is passed through the first tying part 222 and the second tying part 32 at the same time. After tightening, the box body can be temporarily fixed to the hinge base 22. After the work is completed, the cable tie can be cut to release the box body, or the cable tie can be removed along the notch without cutting.

[0038] Further, please refer to Figure 1 and Figure 4 In one embodiment of the present invention, the fiber optic distribution box 100 further includes a hinge bracket 4, which is detachably fixed to the bottom wall of the receiving cavity 1a, and one end of the tray 2 is connected to the hinge bracket 4.

[0039] In this embodiment, a hinged bracket 4 that can be detached as a whole is provided between the housing 1 and the tray 2, allowing the tray 2 and all the fiber optic splice boxes 3 on it to be installed or removed as a module at once, facilitating on-site expansion or quick replacement. Specifically, the hinged bracket 4 consists of a base plate and two upright plates. The base plate has elongated holes at the four corners, and the corresponding fixing holes are provided on the bottom wall of the housing cavity 1a of the housing 1. The base plate can be fixed to the bottom wall of the housing cavity 1a with standard screws to form a detachable connection. When the whole replacement is required, the screws at the four corners of the base plate can be loosened to remove the hinged bracket 4, the tray 2, and all the fiber optic splice boxes 3 together, so that the maintenance of the fiber optic distribution box 100 can be carried out by replacing the entire module, shortening the on-site downtime.

[0040] Further, please refer to Figure 1 and Figure 2 In one embodiment of this utility model, the fiber optic distribution box 100 further includes a partition plate 5, which is fixedly disposed in the receiving cavity 1a and divides the receiving cavity 1a into a fiber storage cavity 1a2 and a fiber fusion cavity 1a1. Both the fiber storage cavity 1a2 and the fiber fusion cavity 1a1 are connected to the opening 1b. One end of the tray 2 is hinged to the fiber fusion cavity 1a1. A fiber storage column 6 is provided in the fiber storage cavity 1a2. The partition plate 5 is provided with an adapter mounting hole 5a that connects the fiber storage cavity 1a2 and the fiber fusion cavity 1a1.

[0041] In this embodiment, a partition plate 5 is installed inside the housing 1 to divide the receiving cavity 1a into a fiber storage cavity 1a2 and a fiber splicing cavity 1a1. Both cavities are connected to the same opening 1b, ensuring that the fiber routing, storage, and splicing operations do not interfere with each other and reducing the risk of entanglement. Specifically, the partition plate 5 can be made of metal and is erected in the middle of the receiving cavity 1a by screws or rivets. Its surface is perpendicular to the back plate of the housing 1, thus forming two longitudinal spaces side by side in the inner cavity: the right side is the fiber storage cavity 1a2, and the left side is the fiber splicing cavity 1a1. Several fiber storage columns 6 are evenly distributed on the back plate of the fiber storage cavity 1a2. The fiber can be coiled along the annular groove, with the coiling radius greater than the allowable bending radius of the optical fiber to avoid loss. The upper part of the partition plate 5 has a row of rectangular adapter mounting holes 5a. The adapter can be inserted into the mounting holes, so that the optical fiber in the fusion splice box 3 can be inserted into the socket of the adapter located in the fusion splice cavity 1a1 through the connector, and the patch cord in the fiber storage cavity 1a2 can be interconnected by inserting the patch cord into the socket of the adapter located in the fiber storage cavity 1a2 through the connector. This realizes the separation of the patch cord storage area and the fusion splice operation area, so that the optical fiber remains orderly in the box 1 and avoids crossing and tangling.

[0042] Further, please refer to Figures 1 to 3 In one embodiment of the present invention, the fiber optic distribution box 100 further includes a door panel 7, which is hinged to the box body 1. The door panel 7 can rotate relative to the box body 1 to cover the opening 1b or expose the opening 1b. The door panel 7 is provided with a sealing member 71. When the door panel 7 covers the opening 1b, the sealing member 71 seals the connection between the door panel 7 and the periphery of the opening 1b.

[0043] In this embodiment, the door panel 7 and the housing 1 form a hinge pair, and a sealing element 71 is provided on the closed surface to completely cover the opening 1b, preventing dust and moisture from entering and ensuring that the fiber storage chamber 1a2 and the fiber melting chamber 1a1 remain dry and clean for a long time. Specifically, the door panel 7 can be a rectangular injection-molded part or a sheet metal part, with an outer dimension slightly larger than the opening 1b. The door panel 7 and the housing 1 can be connected by a hinge. A sealing element 71 is provided on the side of the door panel 7 facing the opening 1b. The sealing element 71 is made of soft rubber and can undergo elastic deformation under pressure. The opening 1b is rolled outward around its perimeter to form a rolled edge, which is used to abut and compress against the sealing element 71 on the door panel 7 to form a seal. This embodiment utilizes the principle of elastic compression and natural sealing of the sealing element 71, so that the fiber optic distribution box 100 can maintain internal cleanliness for a long time in high-humidity and dusty environments such as outdoors or corridors, reducing the failure rate of fiber optic connections.

[0044] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An optical fiber distribution box, characterized in that, The fiber optic distribution box includes: The box (1) has a cavity (1a) inside and an opening (1b) on the box (1) that connects the cavity (1a) to the external space. Tray (2), one end of which is hinged to the receiving cavity (1a); Fiber fusion box (3), which is disposed on the tray (2); The tray (2) can rotate relative to the box (1) so that the fiber fusion box (3) is housed in the receiving cavity (1a) or extends out from the opening (1b).

2. The fiber optic distribution box as described in claim 1, characterized in that, The tray (2) has a stowed state and an unfolded state; In the stored state, the tray (2) is vertically positioned and housed within the receiving cavity (1a); In the unfolded state, the tray (2) is horizontally positioned and extends out of the opening (1b), and the tray (2) abuts against the bottom wall of the receiving cavity (1a).

3. The fiber optic distribution box as described in claim 2, characterized in that, The tray (2) is provided with a first locking part (21), and the side wall of the opening (1b) is provided with a second locking part (11). In the stored state, the first locking part (21) is connected to the second locking part (11); In the unfolded state, the first locking part (21) disengages from the second locking part (11).

4. The fiber optic distribution box as described in claim 1, characterized in that, The fiber optic distribution box includes multiple fiber splicing boxes (3), which are stacked on the tray (2), and each fiber splicing box (3) is hinged to the tray (2).

5. The fiber optic distribution box as described in claim 4, characterized in that, The fiber fusion box (3) is provided with a first hinge part, the tray (2) is fixedly provided with a hinge base (22), and the hinge base (22) is provided with a second hinge part; Of the first hinge portion and the second hinge portion, one is a hinge shaft (31), and the other is a hinge notch (22a). The hinge shaft (31) is detachably hinged to the inner wall of the hinge notch (22a).

6. The fiber optic distribution box as described in claim 5, characterized in that, The hinge base (22) has multiple stepped portions (221), and each stepped portion (221) is provided with a second hinge portion.

7. The fiber optic distribution box as described in claim 5, characterized in that, The hinge base (22) is also provided with a first binding part (222), and the fiber fusion box (3) is provided with a second binding part (32) on the side opposite to the first hinge part.

8. The fiber optic distribution box as described in claim 1, characterized in that, The fiber optic distribution box also includes a hinge bracket (4), which is detachably fixed to the bottom wall of the receiving cavity (1a), and one end of the tray (2) is connected to the hinge bracket (4).

9. The fiber optic distribution box as described in claim 1, characterized in that, The fiber optic distribution box also includes a partition plate (5), which is fixedly disposed in the receiving cavity (1a) and divides the receiving cavity (1a) into a fiber storage cavity (1a2) and a fiber fusion cavity (1a1). Both the fiber storage cavity (1a2) and the fiber fusion cavity (1a1) are connected to the opening (1b). One end of the tray (2) is hinged to the fiber fusion cavity (1a1). The fiber storage cavity (1a2) is provided with a fiber storage column (6). The partition plate (5) is provided with an adapter mounting hole (5a) that connects the fiber storage chamber (1a2) and the fiber melting chamber (1a1).

10. The fiber optic distribution box as described in claim 1, characterized in that, The fiber optic distribution box also includes a door panel (7), which is hinged to the box body (1). The door panel (7) can rotate relative to the box body (1) to cover the opening (1b) or expose the opening (1b). The door panel (7) is provided with a sealing element (71). When the door panel (7) covers the opening (1b), the sealing element (71) seals the periphery of the door panel (7) and the opening (1b).

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