Multifunctional cable branch box

Abstract

The invention relates to a multifunctional cable branch box, and relates to the technical field of intelligent power grids, the multifunctional cable branch box comprises a box body, the upper parts of two opposite vertical sides of the box body are provided with wiring openings along the inclined direction, and the lower side edges of the wiring openings are rotatably connected with box doors; the box door can rotate upwards to block the wiring opening and rotate downwards to open the wiring opening, and a locking piece for locking the box door when the wiring opening is blocked is arranged on the outer side surface of the box door; an access hole is formed in the two box doors, a transparent access plate is arranged outside the box body, the upper side edge of the access plate is rotationally connected with the upper edge of the access hole, and a limiting piece is arranged on the lower edge of the access hole; the access hole is formed in the side face of the box door, the transparent access plate is arranged, when the internal wiring condition is detected daily, the whole box door does not need to be opened, only the limiting piece needs to be unlocked, the access plate is rotated, preliminary visual observation can be achieved through the transparent material, and operation steps and time cost are reduced.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to a multifunctional cable branch box. Background Technology

[0002] In the construction and operation and maintenance system of smart grids, cable distribution boxes, as key power distribution equipment, are mainly used for branching and connecting cable lines, switching lines, and isolating faults, and are widely used in outdoor power distribution scenarios. Their core function is to achieve flexible distribution of cable lines, ensure stable power transmission between different areas, and provide operating sections for subsequent line maintenance and capacity expansion.

[0003] The current mainstream outdoor cable distribution boxes are primarily structured around a sealed enclosure. To facilitate cable connection and wiring, wiring openings are located on the upper, inclined sides of the enclosure's vertical sides. To ensure the sealing and safety of these openings, each opening's upper edge is connected to the box door via a rotating mechanism. The door can be rotated upwards to fully open the opening; after operation, the door can be rotated downwards to seal it against the opening edge. Furthermore, a diagonal brace is rotatably connected to the inner side of the door. When the door is open, the lower end of the brace abuts against the lower edge of the wiring opening, providing support and keeping the door stable and preventing accidental closure during operation.

[0004] The cumbersome operation is a prominent issue when periodically inspecting the internal wiring. On the one hand, the enclosure door is usually made of high-strength metal to ensure outdoor protection performance, making it quite heavy. Maintenance personnel need to expend considerable physical strength to flip it upwards to open it, resulting in poor ease of operation. On the other hand, after the enclosure door is opened, the position of the diagonal brace needs to be manually adjusted to ensure that its lower end precisely abuts against the lower edge of the opening for support. This process requires separate operation and a certain level of positioning accuracy, further increasing the operation steps and time costs, indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a multifunctional cable branch box that solves the problem in the aforementioned related technologies where it is inefficient to open the heavy box door upwards when periodically inspecting the internal wiring.

[0006] The multifunctional cable branch box provided in this application adopts the following technical solution: A multifunctional cable branch box includes a box body. Wiring openings are provided on the upper parts of opposite vertical sides of the box body along an inclined direction. A box door is rotatably connected to the lower edge of each wiring opening. The box door can rotate upwards to block the wiring openings and rotate downwards to open them. A locking element is provided on the outer surface of the box door to lock it in the blocked wiring opening state. Inspection ports are provided on the sides of the two box doors that are far apart when the wiring openings are blocked. A transparent inspection plate is provided on the outside of the box body. The upper edge of the inspection plate is rotatably connected to the upper edge of the inspection port. The inspection plate can rotate to a vertically downward state to block the inspection port. A limiting element is provided on the lower edge of the inspection port to lock the inspection plate in the vertically downward state.

[0007] By adopting the above technical solution, the rotating connection position of the enclosure door is adjusted from the upper edge of the wiring opening to the lower edge, allowing the door to rotate downwards to open the wiring opening. Compared to flipping the heavy enclosure door upwards, this significantly reduces the physical exertion of maintenance personnel and improves operational convenience. Furthermore, the door is securely locked with locking mechanisms when sealed, ensuring outdoor protection performance. Secondly, an inspection port with a transparent inspection panel is provided on the side of the enclosure door. During routine inspections of the internal wiring, it is not necessary to open the entire enclosure door; simply unlocking the limit mechanism and rotating the inspection panel is sufficient. The transparent material also allows for preliminary and intuitive observation, reducing operational steps and time costs. Simultaneously, the inspection panel can be rotated to a sealed position and locked by the limit mechanism, ensuring the enclosure's sealing and safety during non-maintenance periods. This balances convenient inspection with reliable protection, improving overall maintenance efficiency.

[0008] Optionally, the limiting component includes a limiting block fixed to the housing and located below the inspection plate in the vertically downward state, with a limiting notch formed on the top surface of the limiting block; two elastic limiting rods facing opposite directions are fixed side by side on the bottom surface of the inspection plate when it is in the vertically downward state, and the elastic limiting rods are telescopic rods whose length can be elastically extended; the elastic limiting rods can be engaged into the limiting notch when the wiring opening is blocked and the inspection plate is in the vertically downward state.

[0009] By adopting the above technical solution, the elastic limit rod possesses elastic telescopic characteristics. Combined with the limiting notch of the limit block, it can automatically adapt and precisely engage with the notch when the inspection plate is rotated to the vertically downward blocking position, eliminating the need for complex manual alignment and simplifying the locking operation. The elastic design also buffers the impact force during engagement, reducing component wear and extending service life. Furthermore, compared to traditional rigid locking structures, the telescopic nature of the elastic limit rod allows the inspection plate to disengage from the notch with only a small external force when unlocking, balancing locking stability with operational convenience and improving maintenance efficiency.

[0010] Optionally, the outer side of the housing is provided with a middle rod, and the two ends of the middle rod are respectively fixedly connected to the outer peripheral surface of the end of the elastic limiting rod away from the inspection plate.

[0011] By adopting the above technical solution, on the one hand, the middle rod forms a "traction handle" that facilitates the application of force, so that the staff does not need to operate the two elastic limit rods separately, but can control them synchronously to easily unlock the inspection plate; on the other hand, it can enhance the structural stability of the two elastic limit rods, prevent them from shifting when subjected to force, ensure the accuracy of locking and unlocking actions, and improve the convenience of operation.

[0012] Optionally, a guide slope is provided at the opening edge of the limiting notch.

[0013] By adopting the above technical solution, when the inspection plate is rotated downwards to a vertical position, the elastic limit rod does not need to be precisely aligned with the notch. It can automatically slide into the limit notch along the guide slope, eliminating the need for manual alignment and greatly improving the convenience and efficiency of the inspection plate locking operation. At the same time, it can avoid hard collisions, reduce component wear, and extend service life.

[0014] Optionally, the locking component includes two locking plates that are detachably mounted side-by-side on the top surface of the enclosure. When the access panel is blocked, two locking rods are slidably mounted side-by-side on the top surface of the enclosure door. Locking slots are provided on the sides of the two locking plates that are far apart from each other, allowing one end of the locking rod to slide into them. A connecting rod is provided above the enclosure door. The two ends of the connecting rod are fixedly connected to the outer periphery of the ends of the two locking rods that are far away from the locking plates. The connecting rod can drive the locking rods to slide back and forth in the direction away from the locking plates.

[0015] By adopting the above technical solution, the connecting rod can simultaneously drive the two locking rods to slide synchronously, realizing the quick locking and unlocking of the cabinet door without separate operation, simplifying the steps; the structure of the locking rod sliding into the locking slot is stable, and the locking plate is detachable, taking into account both locking reliability and later maintenance convenience, and improving operating efficiency.

[0016] Optionally, a guide block is fixed on the outer side of the door, and a guide hole is provided on the guide block for the locking rod to pass through. A limiting protrusion is fixed on the outer periphery of the locking rod on the side of the guide block away from the connecting rod.

[0017] By adopting the above technical solution, the guide hole of the guide block provides a stable sliding trajectory for the locking rod, ensuring its precise engagement with the locking slot and avoiding offset and jamming; the limiting protrusion can limit the sliding range of the locking rod, preventing excessive sliding or detachment from the guide structure, ensuring reliable locking and unlocking actions, and improving operational stability and component lifespan.

[0018] Optionally, the door can be rotated to a horizontal position away from the box body, and the locking rod can slide down to a position where its lower end face is flush with the bottom surface of the box body. At this time, the locking rod has a first notch on the side facing the box body, and the inspection plate can be rotated to a horizontal position facing the locking rod. The elastic limiting rod can be inserted into the first notch to lock the sliding state of the locking rod.

[0019] By adopting the above technical solution, when the cabinet door and the inspection plate are turned to the horizontal position, the locking rod supports the cabinet door, and the two together form a temporary "stool" for the staff to rest, improving the convenience of outdoor operation; the elastic limit rod is locked into the first notch to ensure structural stability; at the same time, the wiring opening and the inspection port are opened without affecting the power supply operation, realizing the reuse of equipment functions, taking into account both the needs of operation and the comfort of personnel, and is highly practical.

[0020] Optionally, the enclosure has a positioning rod on each of its two vertical sides away from the wiring opening. One end of the positioning rod is fixedly connected to one end of the locking plate. The other end of the positioning rod is rotatably connected to the vertical side of the enclosure. The locking plate can rotate along the vertical surface with the positioning rod to abut against the top surface of the enclosure and be fixed when the enclosure door needs to be locked.

[0021] By adopting the above technical solution, the positioning rod can drive the locking plate to rotate along the vertical plane, and when the door needs to be locked, it can be precisely rotated to abut against the bottom surface of the box and fixed, without the need to manually adjust the position of the locking plate, simplifying the preparation steps before locking; at the same time, it ensures the stability of the locking plate position, ensuring that the subsequent locking rod can be accurately inserted into the locking slot, improving operational efficiency and reliability.

[0022] Optionally, the top surface of the housing is provided with a receiving groove located below the locking plate, and a flexible protective curtain is provided with one side edge fixedly connected to the inner wall of the receiving groove. Several hooks are fixed on the other side edge of the flexible protective curtain. The top surface of the locking plate is fixed with the same number of retaining rings as the hooks. After the wiring opening is opened, the positioning rod can be rotated to a vertical upward state and fixed. At this time, the flexible protective curtain can be unfolded from the receiving groove, so that the hooks can be engaged in the retaining rings to protect the top of the wiring opening.

[0023] By adopting the above technical solution, after the wiring opening is opened, the positioning rod rotates to a vertical position and is fixed. The flexible protective curtain can be unfolded from the receiving slot and fixed by the engagement of the hook and the ring, quickly forming protection above the wiring opening. It can effectively block rain, dust and other pollutants, ensuring the internal operating environment. When not in use, the protective curtain can be stored in the receiving slot without taking up extra space, taking into account both protective practicality and equipment cleanliness, and improving the safety of outdoor operations.

[0024] Optionally, the lower part of the positioning rod is provided with a locking through hole, and the vertical side of the box body is provided with a number of locking thread grooves that coincide with the locking through hole. The outside of the box door is provided with a locking bolt that passes through the locking through hole and is screwed into the locking thread hole.

[0025] By adopting the above technical solution, the locking bolt, in conjunction with the locking through hole and threaded groove, can securely fix the positioning rod at the required angle, adapting to different working conditions such as door locking and protective curtain unfolding; multiple sets of threaded grooves provide flexible adjustment space, the bolt connection has strong vibration resistance, ensuring reliable positioning in outdoor environments, and is easy to operate and highly stable.

[0026] In summary, this application includes the following beneficial technical effects: An inspection port with a transparent inspection panel is provided on the side of the enclosure door. For routine inspections of internal wiring, there's no need to open the entire enclosure door; simply unlock the limit switch and rotate the inspection panel. The transparent material also allows for initial, intuitive observation, reducing operational steps and time costs. Simultaneously, the inspection panel can be rotated to a sealed position and locked by the limit switch, ensuring the enclosure's sealing and safety during non-maintenance periods. This balances convenient inspection with reliable protection, improving overall maintenance efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram illustrating the installation and assembly of the cabinet door and cabinet body according to an embodiment of this application; Figure 3 This is a cross-sectional structural diagram illustrating the installation and assembly of the inspection plate in an embodiment of this application; Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle; Figure 5 This is a partial cross-sectional view of an embodiment of the present application illustrating the installation and cooperation of the locking plate and the locking rod; Figure 6 This is a schematic diagram illustrating the structure of the locking lever in a vertically downward position according to an embodiment of this application; Figure 7 This is a partial cross-sectional view of the installation and cooperation of the elastic limiting rod and the locking rod in an embodiment of this application; Figure 8 This is a partial structural diagram illustrating the installation and coordination of the flexible protective curtain in an embodiment of this application; Figure 9 This is a partial cross-sectional view of the installation and distribution of the retaining rings on the locking plate, as shown in the embodiment of this application.

[0028] In the diagram, 1. Box body; 11. Wiring opening; 12. Positioning rod; 13. Locking bolt; 14. Receiving groove; 2. Box door; 21. Inspection port; 22. Inspection plate; 23. Elastic limit rod; 24. Guide block; 25. Intermediate rod; 3. Locking component; 31. Locking plate; 311. Locking slot; 312. Snap ring; 32. Locking rod; 321. Limiting protrusion; 322. First notch; 33. Connecting rod; 4. Limiting component; 41. Limiting block; 411. Limiting notch; 412. Guide slope; 5. Flexible protective curtain; 51. Hook. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings.

[0030] Example: Reference Figure 1 , Figure 2 and Figure 3 A multifunctional cable branch box includes a box body 1, wherein wiring openings 11 are provided on the upper part of opposite vertical sides of the box body 1 along an inclined direction, and a box door 2 is rotatably connected to the lower edge of the wiring openings 11; the box door 2 can be rotated upward to block the wiring openings 11 and rotated downward to open the wiring openings 11, and a locking element 3 is provided on the outer side of the box door 2 to lock the box door 2 in the blocked state of the wiring openings 11. When the wiring opening 11 is blocked, the two boxes 2 have inspection ports 21 on their opposite sides. The outside of the box 1 is provided with a transparent inspection plate 22. The upper edge of the inspection plate 22 is rotatably connected to the upper edge of the inspection port 21. The inspection plate 22 can be rotated to a vertically downward position to block the inspection port 21. The lower edge of the inspection port 21 is provided with a limiting member 4 to lock the vertically downward position of the inspection plate 22.

[0031] Reference Figure 3 and Figure 4 When the inspection plate 22 is in a vertically downward position, two elastic limiting rods 23 are fixedly mounted side by side on its bottom surface. The elastic limiting rods 23 are telescopic rods whose length can be elastically extended. A middle rod 25 is provided on the outside of the box body 1. The two ends of the middle rod 25 are fixedly connected to the outer peripheral surface of the ends of the elastic limiting rods 23 away from the inspection plate 22. The middle rod 25 and the two elastic limiting rods 23 can form a "traction handle" that facilitates opening the inspection plate 22. The limiting component 4 includes a limiting block 41 fixed on the housing 1 and located below the vertically downward-facing inspection plate 22. A limiting notch 411 is provided on the top surface of the limiting block 41, and a guide slope 412 is provided at the opening edge of the limiting notch 411. When the wiring opening 11 is blocked and the inspection plate 22 is in a vertically downward-facing state, the elastic limiting rod 23 can be inserted into the limiting notch 411 along the guide slope 412 to limit and lock the inspection plate 22 in this state.

[0032] Reference Figure 5 The locking component 3 includes two locking plates 31 that are detachably mounted side by side on the top surface of the enclosure 1. When the inspection port 21 is blocked, two locking rods 32 are slidably mounted side by side on the top surface of the enclosure door 2. Locking slots 311 are provided on the sides of the two locking plates 31 that are far apart from each other, allowing one end of the locking rod 32 to slide into them. A connecting rod 33 is provided above the enclosure door 2, wherein the two ends of the connecting rod 33 are fixedly connected to the outer periphery of the ends of the two locking rods 32 that are far away from the locking plates 31. When it is necessary to lock the door 2, the operator can slide the locking rod 32 toward the locking plate 31 by using the connecting rod 33, so that the end of the locking rod 32 is inserted into the locking slot 311; when it is necessary to unlock the door 2, the operator can slide the locking rod 32 away from the locking plate 31 by using the connecting rod 33, so that the end of the locking rod 32 is dislodged from the locking slot 311.

[0033] Reference Figure 5 A guide block 24 is fixed on the outer side of the door 2. The guide block 24 has a guide hole for the locking rod 32 to pass through, and a limiting protrusion 321 is fixed on the outer periphery of the locking rod 32 on the side of the guide block 24 away from the connecting rod 33. The limiting protrusion 321 is used to limit and adjust the sliding stroke of the locking rod 32.

[0034] Reference Figure 6 and Figure 7 When the door 2 is turned to a horizontal position away from the box body 1, the locking rod 32 can slide down to a position where its lower end face is flush with the bottom surface of the box body 1. At this time, the locking rod 32 has a first notch 322 on its side facing the box body 1. The inspection plate 22 can be turned to a horizontal position facing the locking rod 32. The elastic limiting rod 23 can be inserted into the first notch 322 to lock the sliding state of the locking rod 32. When the external cable needs to draw power, the box door 2 and the inspection plate 22 can be adjusted to the above state. At this time, the wiring opening 11 is in the open state, the inspection port 21 is in the open state, the locking rod 32 supports the box door 2 in the horizontal state, and the inspection plate 22 and the two locking rods 32 can serve as a "stool" for the staff to rest temporarily. At this time, the staff's legs can contact the ground through the inspection port 21.

[0035] Reference Figure 8 On the two vertical sides of the housing 1 away from the wiring opening 11, there is a positioning rod 12 with one end fixedly connected to one end of the locking plate 31, and the other end of the positioning rod 12 is rotatably connected to the vertical side of the housing 1. The lower part of the positioning rod 12 is provided with a locking through hole, and the vertical side of the box body 1 is provided with several locking thread grooves that coincide with the locking through hole. The outside of the box door 2 is provided with a locking bolt 13 that passes through the locking through hole and is screwed into the locking thread groove. The locking bolt 13 is a wing bolt. When it is necessary to lock the door 2, the locking plate 31 can rotate along the vertical plane with the positioning rod 12 to abut against the top surface of the box body 1 and be fixed, which facilitates the subsequent sliding locking of the locking rod 32.

[0036] Reference Figure 8 and Figure 9 The top surface of the housing 1 is provided with a receiving groove 14 located below the locking plate 31, and a flexible protective curtain 5 is provided with one side edge fixedly connected to the inner wall of the receiving groove 14. Two hooks 51 are fixedly provided on the other side edge of the flexible protective curtain 5, and the top surface of the locking plate 31 is fixed with the same number of retaining rings 312 as the hooks 51. After the wiring opening 11 is opened, the positioning rod 12 can be rotated to a vertically upward position and fixed. At this time, the operator can unfold the flexible protective curtain 5 from the receiving groove 14 so that the hook 51 can be inserted into the retaining ring 312, thereby using the flexible protective curtain 5 to protect the top of the wiring opening 11.

[0037] The implementation principle of this application embodiment is as follows: Wiring opening 11 and inspection port 21 are blocked: Positioning rod 12 rotates to the vertical surface, locking plate 31 rotates with it to abut and fix with the bottom surface of box 1, box door 2 rotates upward to block wiring opening 11, and locking rod 32 is driven by connecting rod 33 to slide into locking slot 311 of locking plate 31. At the same time, inspection plate 22 rotates downward to the vertical surface, and elastic limit rod 23 is inserted into limit notch 411 of limit block 41 along guide slope 412 to complete double locking.

[0038] With the external cable powered: When the cabinet door 2 is turned to the horizontal position, the locking rod 32 slides down to its lower end, flush with the bottom surface of the cabinet 1. The inspection plate 22 is turned to the horizontal position, and the elastic limit rod 23 engages with the first notch 322 of the locking rod 32 to lock it in place. At this time, the wiring opening 11 and the inspection port 21 are open. The locking rod 32 supports the cabinet door 2, and the inspection plate 22 and the locking rod 32 form a "stool" for resting, allowing the legs to touch the ground through the inspection port 21. At this time, the positioning rod 12 can also be turned to the vertical position and fixed, the flexible protective curtain 5 can be unfolded, and the hook 51 can engage with the retaining ring 312 of the locking plate 31 to protect the area above the wiring opening 11. The positioning rod 12 is fixed by the locking bolt 13 (wing bolt) passing through the locking through hole and screwing into the corresponding locking thread groove.

[0039] Maintenance status: When the staff applies force to press the elastic limit rod 23 upward, the lower end of the elastic limit rod 23 is dislodged from the limit notch 411. Then the inspection plate 22 is rotated upward. At this time, the staff can inspect the electrical components inside the box 1 through the inspection port 21. At this time, the staff can also directly observe the electrical components inside the box 1 through the transparent inspection plate 22.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A multifunctional cable branch box, comprising a box body (1), wherein wiring openings (11) are provided on the upper part of opposite vertical sides of the box body (1) along an inclined direction, and a box door (2) is rotatably connected to the lower edge of the wiring openings (11); the box door (2) can be rotated upward to block the wiring openings (11) and rotated downward to open the wiring openings (11), and a locking element (3) is provided on the outer side of the box door (2) to lock the box door (2) in the blocked state; Its features are, When the wiring opening (11) is blocked, the two boxes (2) have inspection ports (21) on their opposite sides. The box body (1) has a transparent inspection plate (22) on its exterior. The upper edge of the inspection plate (22) is rotatably connected to the upper edge of the inspection port (21). The inspection plate (22) can be rotated to a vertically downward state that blocks the inspection port (21). The lower edge of the inspection port (21) has a limiting member (4) that locks the vertically downward state inspection plate (22).

2. The multifunctional cable branch box according to claim 1, characterized in that, The limiting component (4) includes a limiting block (41) fixed on the box (1) and located below the vertically downward maintenance plate (22), and a limiting notch (411) is provided on the top surface of the limiting block (41); When the inspection plate (22) is in a vertically downward state, two elastic limiting rods (23) are fixed side by side on its bottom surface. The elastic limiting rods (23) are telescopic rods whose length can be elastically extended. When the wiring opening (11) is in a blocked state and the inspection plate (22) is in a vertically downward state, the elastic limiting rods (23) can be inserted into the limiting notch (411).

3. A multifunctional cable branch box according to claim 2, characterized in that, The box (1) is provided with an intermediate rod (25) on its outside. The two ends of the intermediate rod (25) are fixedly connected to the outer peripheral surface of the end of the elastic limiting rod (23) away from the inspection plate (22).

4. A multifunctional cable branch box according to claim 2, characterized in that, A guide slope (412) is provided at the opening edge of the limiting notch (411).

5. A multifunctional cable branch box according to claim 2, characterized in that, The locking component (3) includes two locking plates (31) that are detachably installed side by side on the top surface of the box (1). When the inspection port (21) is blocked, two locking rods (32) are slidably installed side by side on the top surface of the box door (2). Locking slots (311) for one end of the locking rod (32) to slide into are provided on the side of the two locking plates (31) that are far apart from each other. The box door (2) is provided with a connecting rod (33) above it. The two ends of the connecting rod (33) are fixedly connected to the outer periphery of the ends of the two locking rods (32) away from the locking plate (31). The connecting rod (33) can drive the locking rods (32) to slide back and forth in the direction away from the locking plate (31).

6. A multifunctional cable branch box according to claim 5, characterized in that, A guide block (24) is fixed on the outer side of the door (2). A guide hole is provided on the guide block (24) for the locking rod (32) to pass through. A limiting protrusion (321) is fixed on the outer periphery of the locking rod (32) on the side of the guide block (24) away from the connecting rod (33).

7. A multifunctional cable branch box according to claim 5, characterized in that, The door (2) is turned to a horizontal position away from the box body (1), and the locking rod (32) can slide down to a position where its lower end face is flush with the bottom surface of the box body (1). At this time, the locking rod (32) has a first notch (322) on its side facing the box body (1). The inspection plate (22) can be turned to a horizontal position facing the locking rod (32). The elastic limiting rod (23) can be inserted into the first notch (322) to lock the sliding state of the locking rod (32).

8. A multifunctional cable branch box according to claim 5, characterized in that, The box body (1) has a positioning rod (12) on its two vertical sides away from the wiring opening (11). One end of the positioning rod (12) is fixedly connected to one end of the locking plate (31). The other end of the positioning rod (12) is rotatably connected to the vertical side of the box body (1). The locking plate (31) can rotate along the vertical surface with the positioning rod (12) to abut against the top surface of the box body (1) and be fixed when the box door (2) needs to be locked.

9. A multifunctional cable branch box according to claim 8, characterized in that, The top surface of the box (1) is provided with a receiving groove (14) located below the locking plate (31), and a flexible protective curtain (5) is provided with one side edge fixedly connected to the inner wall of the receiving groove (14). Several hooks (51) are fixedly provided on the other side edge of the flexible protective curtain (5). The top surface of the locking plate (31) is fixed with the same number of retaining rings (312) as the hooks (51); the positioning rod (12) can be rotated to a vertically upward state and fixed after the wiring opening (11) is opened, and the flexible protective curtain (5) can be unfolded from the receiving groove (14) at this time, so that the hooks (51) can be inserted into the retaining rings (312) to protect the top of the wiring opening (11).

10. A multifunctional cable branch box according to claim 9, characterized in that, The lower part of the positioning rod (12) is provided with a locking through hole, and the vertical side of the box body (1) is provided with a number of locking thread grooves that coincide with the locking through hole. The outside of the box door (2) is provided with a locking bolt (13) that passes through the locking through hole and is screwed into the locking thread hole.

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