Cable branch box with waterproof function

Abstract

This application relates to a waterproof cable branch box, belonging to the technical field of smart grids. It includes a box body and a door rotatably mounted on the front side of the box body. Several heat dissipation vents are provided on the left and right sides of the box body. A control port is provided on the front side of the door, and a sealing plate is installed to block the control port. The upper edge of the sealing plate is rotatably connected to the upper inner edge of the control port, and the lower edge of the sealing plate is detachably connected to the lower inner edge of the control port. A traction handle is provided on the front side of the door, and the middle part of the traction handle is rotatably connected to the front side of the door. The traction handle can rotate to a horizontal and vertical position along a rotation surface parallel to the front side of the door, and a limit notch is provided on the traction handle. A traction plate is fixed on the front side of the sealing plate. This application prevents the sealing plate from rotating downwards due to its own weight and squeezing the cable insulation when an external cable is connected, ensuring power supply stability and the safety of maintenance personnel.

Description

Technical Field

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

[0002] In the construction and operation and maintenance of smart grids, outdoor cable distribution boxes are key equipment for cable distribution, switching, and temporary power supply, widely used in urban power distribution networks, industrial parks, and remote power supply areas. Their core function is to ensure the safe connection and flexible dispatch of cable lines in complex outdoor environments, while also possessing good environmental adaptability. With the increasing demands for power supply reliability and ease of operation and maintenance from smart grids, the structural design of outdoor cable distribution boxes must not only meet basic electrical connection requirements but also consider operational safety and equipment durability, providing direction for subsequent technological optimization.

[0003] The current mainstream outdoor cable distribution boxes mainly consist of two parts: the box body and the box door. The box body has a vertical structure with several ventilation holes on the left and right vertical surfaces. The box door is installed on the front side of the box body via a rotating mechanism. A control port is reserved on the front side of the box door, which is sealed by a sealing plate under normal conditions. The upper edge of the sealing plate is rotatably connected to the upper edge of the control port, and the lower edge is fixed by a locking plate. The locking plate has a through hole, and a screw is screwed through the through hole and into the pre-set screw hole on the box door to complete the sealing. When temporary power is needed, the operator only needs to remove the screws, rotate the sealing plate upwards, and connect the external cable plug to the internal connector through the control port.

[0004] During the temporary power supply process via external cables, after the workers have connected the external cable plug to the internal connector in the box, they stop applying force to the sealing plate. At this point, the sealing plate will naturally rotate downwards under its own weight, eventually contacting the outer circumference of the external cable. Because the sealing plate lacks a limiting or buffering structure, its lower edge will continuously compress the cable insulation. Over time, this prolonged compression will cause wear on the insulation, leading to the exposure of the internal conductors. In the event of dampness, dust, or other environmental factors, this can easily cause electrical accidents such as leakage and short circuits, affecting not only the stability of the power supply but also posing a threat to the personal safety of maintenance personnel, indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a waterproof cable branch box to solve the problem in the above-mentioned related technologies where the external insulation is easily damaged due to prolonged contact between the lower edge of the sealing plate and the external cable when it is temporarily powered.

[0006] The waterproof cable distribution box provided in this application adopts the following technical solution:

[0007] The device includes a housing and a door rotatably mounted on the front side of the housing. Several ventilation openings are provided on the left and right sides of the housing. A control port is provided on the front side of the door, and a sealing plate is installed to block the control port. The upper edge of the sealing plate is rotatably connected to the upper inner edge of the control port, and the lower edge of the sealing plate is detachably connected to the lower inner edge of the control port. A traction handle is provided on the front side of the door, and the middle part of the traction handle is rotatably connected to the front side of the door. The traction handle can rotate to a horizontal and vertical position along a rotation surface parallel to the front side of the door. A limit notch is provided on the lower end face of the traction handle when it is in the vertical position. A traction plate is fixed on the front side of the sealing plate. When the sealing plate rotates upward to a horizontal position, the traction plate faces vertically upward, and when the traction handle rotates to a vertical position, the traction handle can be engaged in the limit notch.

[0008] By adopting the above technical solution, when an external cable is connected, the operator can rotate the sealing plate upwards to a horizontal position. At this time, the traction plate on the sealing plate is vertically upwards. Simultaneously, the traction handle is rotated to a vertical position, causing the traction plate to engage with the limiting notch of the traction handle. The engagement of the two provides stable limiting for the sealing plate, preventing it from rotating downwards due to its own weight and squeezing the cable insulation. This fundamentally eliminates the risk of conductor exposure due to insulation wear, leading to leakage and short circuits, ensuring power supply stability and the safety of maintenance personnel. Furthermore, the rotating and detachable connection design of the sealing plate and control port retains the advantages of traditional branch boxes for convenient cable connection. The traction handle can flexibly switch between horizontal and vertical positions, and the operation is simple without complex tools. While optimizing safety performance, it does not increase the difficulty of maintenance operations, adapting to temporary power supply needs in complex outdoor environments.

[0009] Optionally, a sliding mounting plate is installed on the front side of the door, and a mounting block is fixed on the side of the mounting plate facing the door. A guide hole is provided on the door for the mounting block to pass through and slide up and down. An elastic pressing member is provided on the inner side of the door to drive the mounting block to move down. A fixing notch is provided on the bottom surface of the mounting plate. When the traction handle is in a vertical state, the upper edge can be inserted into the fixing notch under the action of the elastic pressing member.

[0010] By adopting the above technical solution, the elastic compression component can drive the fixing block and fixing plate to move downwards, so that the fixing notch of the fixing plate tightly engages with the upper edge of the traction handle, preventing the traction handle from falling out of the vertical position due to external impact or vibration, and thus preventing the sealing plate from accidentally rotating and squeezing the cable. This design does not require additional manual locking, and achieves automatic locking by relying on elastic force, which simplifies the operation and maintenance steps, improves the structural reliability, and ensures that the sealing plate always remains in a horizontal limit state during the power supply of the external cable, completely eliminating the risk of cable insulation damage caused by loosening of the traction handle, and is suitable for long-term stable use in complex outdoor working conditions.

[0011] Optionally, a connecting rod is provided on the inner side of the door in a horizontal direction, and the middle part of the connecting rod is fixedly connected to the inner side of the fixing block; the elastic pressing member includes a return spring, a vertical rod fixed on the top surface of the connecting rod, a baffle fixed on the upper end surface of the vertical rod, and a guide block fixed on the inner side of the door; the baffle is located above the guide block, and a guide hole for the vertical rod to pass through is provided on the guide block; the two ends of the return spring are fixedly connected to the sides of the guide block and the connecting rod that are close to each other.

[0012] By adopting the above technical solution, the return spring is always in a compressed state, continuously exerting a downward elastic force on the connecting rod. This ensures that the fixing notch of the fixing plate tightly engages with the upper end of the traction handle, preventing loosening. The guide hole of the vertical rod cooperates with the guide block to limit the movement direction of the connecting rod, preventing it from shifting and causing misalignment of the fixing plate. The baffle prevents the vertical rod from moving excessively downward, avoiding structural damage. The overall structure achieves automatic elastic compression through mechanical linkage, requiring no additional power. Furthermore, the clear division of labor and tight cooperation among the components ensure stable operation of the elastic compression function and enhance the durability of the structure, making it suitable for long-term outdoor use.

[0013] Optionally, the inner side of the cabinet door is provided with two support rods located below the connecting rod in a horizontal direction, and the ends of the two support rods that are close to each other are rotatably connected to the inner side of the cabinet door; square inserts are fixed on the bottom surfaces of both ends of the connecting rod, and square slots are provided on the top surfaces of the support rods; the support rods can be rotated to a state perpendicular to the inner side of the cabinet door in a direction that is close to each other, and to a state parallel to the inner side of the cabinet door in a direction that is far apart from each other, and the square inserts can be moved down and inserted into the square slots when the support rods are in both states; a limiting member is provided on the top surface of the support rods, and an upward-opening collection bag is provided on the inner side of the cabinet door, and the upper edge of the collection bag is detachably connected to the support rods through the limiting member when the two support rods are in a state perpendicular to the inner side of the cabinet door.

[0014] By adopting the above technical solution, the interlocking of the square plug and the square slot can quickly lock the support rod into either a vertical or parallel state, adapting to different usage needs. In the vertical state, the collection bag can be fixed to the support rod by the limiting component, facilitating the collection of waste materials during disassembly and inspection, and preventing spillage that could contaminate the equipment or the environment. In the parallel state, it does not occupy internal space, ensuring normal operation and maintenance. The overall design requires no additional tools, is simple to operate, and the linkage between the support rod and the connecting rod balances state locking and functional expansion, allowing the branch box to further meet the actual needs of outdoor maintenance in addition to basic protection, thus improving the equipment's practicality.

[0015] Optionally, the limiting component includes a limiting rod with one end rotatably connected to the support rod, and a torsion spring that drives the limiting rod to rotate toward the support rod.

[0016] By adopting the above technical solution, the torsion spring can continuously drive the limiting rod to move closer to the support rod, clamping the upper edge of the collection bag without the need for additional locking operations; during disassembly, the collection bag can be removed simply by prying open the limiting rod, making the operation simple and efficient. The overall structure is compact and highly reliable, ensuring that the collection bag is firmly fixed while also meeting the needs of quick access during outdoor maintenance, thus improving the convenience of operation and maintenance.

[0017] Optionally, the sealing plate can be rotated to a horizontal support state towards the box body, and a vertically downward positioning rod is fixed on the bottom surface of the connecting rod. When the sealing plate is in the horizontal support state, a positioning slot is opened on the top surface for the lower end of the positioning rod to be inserted. At this time, the sealing plate can provide auxiliary support for the lower part of the collection bag.

[0018] By adopting the above technical solution, when the collection bag is unfolded and used via the support rod, the sealing plate rotates to a horizontal position and locks itself in place by inserting the positioning rod into the positioning slot. This allows it to support the weight of the lower part of the collection bag, preventing it from sagging and deforming due to the filling with waste, thus ensuring stable collection. Furthermore, the sealing plate requires no additional support structure; it can be switched from a sealing element to a support element simply by changing its state, thus combining sealing and support functions and reducing component redundancy. The overall design relies on existing structural linkages, making operation simple. It improves the reliability of the collection bag and optimizes the internal space utilization of the branch box, adapting to the actual storage needs during outdoor maintenance.

[0019] Optionally, when the sealing plate is in a horizontal support state, a storage cavity is opened on the side away from the box door for folding and inserting the collection bag.

[0020] By adopting the above technical solution, the collection bag can be folded and placed into the storage cavity when not in use, which prevents it from shaking around in the box and causing interference, and also prevents wear and tear on the components; and the storage cavity is combined with the sealing plate, which does not require additional space inside the box, making the internal layout of the branch box more orderly, while making it convenient to take out and store the collection bag, thus improving the efficiency of operation and maintenance.

[0021] Optionally, the side of the traction handle facing the door is provided with an elastic locking member, and the front side of the door is provided with several positioning grooves; the elastic locking member can be engaged into the corresponding positioning grooves when the traction handle is in a horizontal or vertical state.

[0022] By adopting the above technical solution, the horizontal and vertical states of the traction handle can be quickly locked. No additional tools are required; the snap-fit ​​component automatically snaps into the corresponding groove, preventing the handle from shifting due to vibration or accidental contact, and ensuring the stability of the sealing plate limit. At the same time, it simplifies the state switching operation, improves the convenience of operation and maintenance, and is suitable for complex outdoor usage scenarios.

[0023] Optionally, the elastic snap-fit ​​component includes a compression spring and an arc-shaped protrusion. The traction handle has a placement groove for the compression spring and the arc-shaped protrusion to be inserted. The compression spring squeezes one side of the arc-shaped protrusion, causing a part of the arc-shaped protrusion to protrude from the opening of the placement groove. The protruding part of the arc-shaped protrusion is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

[0024] By adopting the above technical solution, the combination of the compression spring and the arc-shaped protrusion provides stable elastic force for the elastic locking, ensuring that the protrusion can be reliably locked into the positioning groove; the inferior arc surface design makes the protrusion smoother when entering and exiting the groove, reducing jamming and wear; the placement groove protects the components, and the overall structure is simple and durable, which not only ensures the stability of the locking state of the traction handle, but also improves the smoothness of operation.

[0025] Optionally, elastic sealing strips are embedded on the left and right sides of the sealing plate.

[0026] By adopting the above technical solution, an elastic sealing strip is embedded on the side of the sealing plate, which can effectively fill the gap between the sealing plate and the inner wall of the control port, enhancing the sealing performance. The elasticity of the sealing strip can adapt to slight deformation, and it fits tightly when the sealing plate is closed, preventing rainwater, dust, etc. from entering the box, improving the waterproof and dustproof capabilities of the branch box, and ensuring the safety of internal components.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] When an external cable is connected, the operator can rotate the sealing plate upwards to a horizontal position. At this time, the traction plate on the sealing plate will be vertically upwards. Simultaneously, the traction handle will be rotated to a vertical position, causing the traction plate to engage with the limiting notch of the traction handle. The engagement of the two will create a stable limit on the sealing plate, preventing the sealing plate from rotating downwards due to its own weight and squeezing the cable insulation. This fundamentally eliminates the risk of conductor exposure due to insulation wear, which could lead to leakage and short circuits, ensuring power supply stability and the safety of maintenance personnel. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0030] Figure 2 This is a partial structural diagram illustrating the installation and assembly of the sealing plate in an embodiment of this application;

[0031] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle;

[0032] Figure 4 This is a partial cross-sectional view of the installation and assembly of the traction handle according to an embodiment of this application;

[0033] Figure 5This is a partial cross-sectional view of the installation and fit of the elastic extrusion component in an embodiment of this application;

[0034] Figure 6 This is a partial cross-sectional structural diagram illustrating the installation and cooperation of the connecting rod and the support rod in an embodiment of this application;

[0035] Figure 7 This is a partial cross-sectional view of the structure of the collection bag installation and assembly in an embodiment of this application.

[0036] In the diagram, 1. Box body; 11. Heat dissipation vent; 2. Box door; 21. Control port; 22. Guide through hole; 23. Elastic sealing strip; 24. Positioning groove; 3. Sealing plate; 31. Extension plate; 32. Storage cavity; 33. Positioning slot; 34. Traction plate; 4. Traction handle; 41. Limiting notch; 42. Placement slot; 5. Elastic snap-fit ​​component; 51. Compression spring; 52. Arc-shaped protrusion; 6. Fixing component; 61. Fixing plate; 611. Fixing notch; 62. Fixing block; 63. Elastic compression component; 631. Return spring; 632. Vertical rod; 633. Baffle; 634. Guide block; 64. Connecting rod; 641. Square insert; 65. Positioning rod; 7. Support rod; 71. Square slot; 72. Limiting component; 721. Limiting rod; 8. Collection bag. Detailed Implementation

[0037] The present application will be further described in detail below with reference to all the accompanying drawings.

[0038] Example:

[0039] Reference Figure 1 and Figure 2 A waterproof cable distribution box includes a box body 1 and a door 2 rotatably mounted on the front side of the box body 1. The box body 1 has several heat dissipation vents 11 on its left and right sides. The door 2 has a control port 21 on its front side and a sealing plate 3 for sealing the control port 21. The upper edge of the sealing plate 3 is rotatably connected to the upper inner edge of the control port 21, and an extension plate 31 is rotatably connected to the lower edge of the sealing plate 3. The extension plate 31 is detachably connected to the lower edge of the control port 21 when the sealing plate 3 is in a vertical downward position.

[0040] A traction handle 4 is provided on the front side of the box door 2. The middle part of the traction handle 4 is rotatably connected to the front side of the box door 2. The traction handle 4 can rotate to a horizontal and vertical state along a rotating surface parallel to the front side of the box door 2. A limit notch 41 is provided on the lower end surface of the traction handle 4 when it is in the vertical state. A traction plate 34 is fixed on the front side of the sealing plate 3.

[0041] When the external cable is not connected to the enclosure 1, the sealing plate 3 is in a vertical downward position, and the extension plate 31 is detachably connected to the lower edge of the control port 21 by a wing bolt. When the external cable is connected to the enclosure 1 through the control port 21, the sealing plate 3 is first turned upward to a horizontal position, and the traction plate 34 is in a vertical upward position. At this time, the staff will simultaneously turn the traction handle 4 to a vertical position, and the traction plate 34 can be inserted into the limiting notch 41 to fix the sealing plate 3 in a horizontal outward position.

[0042] Reference Figure 2 and Figure 3 The sealing plate 3 has rubber elastic sealing strips 23 embedded on its left and right sides. The elastic sealing strips 23 are used to reduce the gap between the sealing plate 3 and the inner wall of the control port 21, thereby improving the sealing performance of the sealing plate 3 when it seals the control port 21.

[0043] Reference Figure 4 The traction handle 4 is provided with an elastic snap-fit ​​5 on the side facing the box door 2, and four positioning grooves 24 are provided on the front side of the box door 2. When the traction handle 4 is in a horizontal or vertical state, the elastic snap-fit ​​5 can be snapped into the corresponding positioning groove 24, thereby improving the installation stability of the traction handle 4 in the corresponding state.

[0044] The elastic snap-fit ​​component 5 includes a compression spring 51 and an arc-shaped protrusion 52. The traction handle 4 has a placement groove 42 for the compression spring 51 and the arc-shaped protrusion 52 to be inserted. The compression spring 51 squeezes one side of the arc-shaped protrusion 52, causing a part of the arc-shaped protrusion 52 to protrude from the opening of the placement groove 42. The protruding part of the arc-shaped protrusion 52 is an arc surface, and the arc length corresponding to this arc surface is the minor arc.

[0045] Reference Figure 4 and Figure 5 The front side of the door 2 is provided with a fixing component 6, which includes a fixing plate 61 installed on the front side of the door 2 and capable of sliding up and down. A fixing block 62 is fixed on the side of the fixing plate 61 facing the door 2. A guide hole 22 is provided on the door 2 for the fixing block 62 to pass through and slide up and down. An elastic pressing member 63 is provided on the inner side of the door 2 to drive the fixing block 62 to move down. A fixing notch 611 is provided on the bottom surface of the fixing plate 61.

[0046] When the sealing plate 3 is in a horizontal outward position and is fixed by the traction handle 4, the traction handle 4 is in a vertical position, and the upper edge of the traction handle 4 can be inserted into the fixing notch 611 under the action of the elastic pressing member 63, thereby enhancing the installation stability of the traction handle 4 when it is in a vertical position.

[0047] Reference Figure 4 and Figure 5A connecting rod 64 is provided on the inner side of the door 2 along the horizontal direction, and the middle part of the connecting rod 64 is fixedly connected to the inner side of the fixing block 62; the elastic compression member 63 includes a return spring 631 in a compressed state, a vertical rod 632 fixed on the top surface of the connecting rod 64, a baffle 633 fixed on the upper end surface of the vertical rod 632, and a guide block 634 fixed on the inner side of the door 2;

[0048] The baffle 633 is located above the guide block 634, and the guide block 634 has a guide hole for the vertical rod 632 to pass through. The two ends of the return spring 631 are fixedly connected to the sides of the guide block 634 and the connecting rod 64 that are close to each other. The baffle 633 limits the downward sliding stroke of the vertical rod 632, and the return spring 631 elastically compresses the connecting rod 64, so that the upper edge of the vertical traction handle 4 can be tightly inserted into the fixing notch 611 on the fixing plate 61.

[0049] Reference Figure 6 and Figure 7 The inner side of the box door 2 is provided with two support rods 7 located below the connecting rod 64 along the horizontal direction. The ends of the two support rods 7 that are close to each other are rotatably connected to the inner side of the box door 2. A square insert 641 is fixed on the bottom surface of both ends of the connecting rod 64, and a square slot 71 is opened on the top surface of the support rod 7.

[0050] The support rod 7 can rotate to a state perpendicular to the inner side of the cabinet door 2 in a direction that brings them closer together, and to a state parallel to the inner side of the cabinet door 2 in a direction that moves them further apart. When the support rod 7 is in either of these two states, the square insert 641 can move down and insert into the square slot 71. The state of the support rod 7 is limited and locked by the insertion and cooperation of the square insert 641 and the square slot 71. When unlocking is required, the operator only needs to apply force to move the connecting rod 64 upward so that the square insert 641 can be dislodged from the square slot 71.

[0051] The top surface of the support rod 7 is provided with a limiting member 72, and the inside of the box door 2 is provided with a collection bag 8 with the opening facing upward. When disassembling and inspecting the electrical components in the branch box, the two support rods 7 can be rotated to a state perpendicular to the inside of the box door 2, and the upper edge of the collection bag 8 can be detachably connected to the support rod 7 through the limiting member 72. At this time, the replaced waste can be placed in the collection bag 8 for collection.

[0052] Reference Figure 7 The limiting member 72 includes a limiting rod 721 with one end rotatably connected to the support rod 7, and a torsion spring (not shown in the figure) that drives the limiting rod 721 to rotate toward the support rod 7. It can place the upper edge of the collection bag 8 between the limiting rod 721 and the support rod 7, and clamp the upper edge of the collection bag 8 with the limiting rod 721.

[0053] Reference Figure 6 and Figure 7 When the sealing plate 3 is in a horizontal support state, the storage cavity 32 is opened on the side away from the box door 2; when the collection bag 8 is not in use, the collection bag 8 can be folded and placed inside the storage cavity 32.

[0054] The sealing plate 3 can be rotated to a horizontal support state towards the box 1. A vertically downward positioning rod 65 is fixed on the bottom surface of the connecting rod 64. When the sealing plate 3 is in the horizontal support state, a positioning slot 33 is opened on the top surface for the lower end of the positioning rod 65 to be inserted.

[0055] When the sealing plate 3 is in a horizontal support state under the compression of the return spring 631, the lower end of the positioning rod 65 can be inserted into the positioning slot 33 to support and lock the sealing plate 3 in this state. At this time, the sealing plate 3 can provide auxiliary support for the lower part of the collection bag 8.

[0056] The implementation principle of this application embodiment is as follows:

[0057] When no cable is connected: the sealing plate 3 is vertically downward, the extension plate 31 is connected to the lower edge of the control port 21 by a butterfly bolt, the elastic sealing strip 23 reduces the gap between the sealing plate 3 and the control port 21 to achieve sealing and waterproofing; the traction handle 4 can be rotated to horizontal or vertical, and the elastic snap-fit ​​5 is snapped into the positioning groove 24 to fix the state.

[0058] When connecting the cable: the sealing plate 3 is rotated to the horizontal position, the traction plate 34 is in the vertical upward position, and the traction handle 4 is rotated to the vertical position at the same time. The traction plate 34 is locked into the limiting notch 41 to fix the sealing plate 3. The return spring 631 in the elastic compression member 63 squeezes the connecting rod 64, causing the fixing plate 61 to move down. The upper end of the traction handle 4 is locked into the fixing notch 611 to strengthen the fixation.

[0059] When disassembling and inspecting components: First, open the box door 2, then move the connecting rod 64 upward to disengage the square insert 641 from the support rod 7. Rotate the two support rods 7 to a position perpendicular to the box door 2, then rotate the sealing plate 3 into the box body 1 to a horizontal position. Then stop applying force and move the connecting rod 64 downward to allow the square insert 641 to insert into the square slot 71 and the positioning rod 65 to insert into the positioning slot 33 and lock it in place. This will allow the sealing plate 3 to assist in supporting the collection bag 8. Finally, the bag will be taken out from the storage cavity 32 and the upper edge of the collection bag 8 will be fixed to the support rod 7 by the limiting member 72 for collecting waste materials.

[0060] After disassembly and inspection: First, fold the collection bag 8 and put it into the storage cavity 32 on the sealing plate 3, so that the sealing plate 3 is readjusted to a vertical downward position, and then reset the two support rods 7.

[0061] 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 covered within the scope of protection of this application.

Claims

1. A cable branch box with waterproof function, comprising a box body (1), a box door (2) rotatably installed on the front side of the box body (1), a plurality of heat dissipation openings (11) are formed on the left and right side surfaces of the box body (1); a control opening (21) is formed on the front side surface of the box door (2), and a blocking plate (3) for blocking the control opening (21) is installed; the upper edge of the blocking plate (3) is rotatably connected with the upper inner edge of the control opening (21), and the lower edge of the blocking plate (3) is detachably connected with the lower inner edge of the control opening (21); characterized in that, A traction handle (4) is provided on the front side of the box door (2). The middle part of the traction handle (4) is rotatably connected to the front side of the box door (2). The traction handle (4) can rotate to a horizontal and vertical state along a rotation surface parallel to the front side of the box door (2). When the traction handle (4) is in the vertical state, a limiting notch (41) is provided on the lower end surface. A traction plate (34) is fixed on the front side of the sealing plate (3). When the sealing plate (3) is rotated upward to the horizontal state, the traction plate (34) is vertically upward. When the traction handle (4) is rotated to the vertical state, the traction handle (4) can be inserted into the limiting notch (41). A sliding mounting plate (61) is installed on the front side of the door (2). A mounting block (62) is fixed on the side of the mounting plate (61) facing the door (2). A guide hole (22) is provided on the door (2) for the mounting block (62) to pass through and slide up and down. An elastic pressing member (63) is provided on the inner side of the door (2) to drive the mounting block (62) to move down. A fixing notch (611) is provided on the bottom surface of the mounting plate (61). When the traction handle (4) is in a vertical state, the upper edge can be inserted into the fixing notch (611) under the action of the elastic pressing member (63). The inner side of the box door (2) is provided with a connecting rod (64) in the horizontal direction. The middle part of the connecting rod (64) is fixedly connected to the inner side of the fixing block (62). The elastic pressing member (63) includes a return spring (631), a vertical rod (632) fixed on the top surface of the connecting rod (64), a baffle (633) fixed on the upper end surface of the vertical rod (632), and a guide block (634) fixed on the inner side of the box door (2). The baffle (633) is located above the guide block (634). The guide block (634) has a guide hole for the vertical rod (632) to pass through. The two ends of the return spring (631) are fixedly connected to the sides of the guide block (634) and the connecting rod (64) that are close to each other.

2. A waterproof cable branch box according to claim 1, characterized in that, The inner side of the box door (2) is provided with two support rods (7) located below the connecting rod (64) in a horizontal direction. The ends of the two support rods (7) that are close to each other are rotatably connected to the inner side of the box door (2). A square insert (641) is fixed on the bottom surface of both ends of the connecting rod (64), and a square slot (71) is opened on the top surface of the support rod (7). The support rod (7) can rotate to a state perpendicular to the inner side of the box door (2) in a direction that brings them closer together, and to a state parallel to the inner side of the box door (2) in a direction that moves them further apart. The square insert (641) can be moved down and inserted into the square slot (71) when the support rod (7) is in either of the two states. The top surface of the support rod (7) is provided with a limiting member (72). The inner side of the box door (2) is provided with a collection bag (8) with its opening facing upward. The upper edge of the collection bag (8) is detachably connected to the support rod (7) through the limiting member (72) when the two support rods (7) are in a state perpendicular to the inner side of the box door (2).

3. A waterproof cable branch box according to claim 2, characterized in that, The limiting member (72) includes a limiting rod (721) with one end rotatably connected to the support rod (7) and a torsion spring that drives the limiting rod (721) to rotate toward the support rod (7).

4. A waterproof cable branch box according to claim 2, characterized in that, The sealing plate (3) can be rotated to a horizontal support state towards the box (1). A vertically downward positioning rod (65) is fixed on the bottom surface of the connecting rod (64). When the sealing plate (3) is in the horizontal support state, a positioning slot (33) is opened on the top surface for the lower end of the positioning rod (65) to be inserted. At this time, the sealing plate (3) can provide auxiliary support for the lower part of the collection bag (8).

5. A waterproof cable branch box according to claim 4, characterized in that, When the sealing plate (3) is in a horizontal support state, a storage cavity (32) is opened on the side away from the box door (2) for the collection bag (8) to be folded and inserted.

6. A waterproof cable branch box according to claim 1, characterized in that, The traction handle (4) is provided with an elastic snap-fit ​​component (5) on the side facing the box door (2), and the front side of the box door (2) is provided with several positioning grooves (24); the elastic snap-fit ​​component (5) can be snapped into the corresponding positioning groove (24) when the traction handle (4) is in a horizontal or vertical state.

7. A waterproof cable branch box according to claim 6, characterized in that, The elastic snap-fit ​​component (5) includes a compression spring (51) and an arc-shaped protrusion (52). The traction handle (4) has a placement groove (42) for the compression spring (51) and the arc-shaped protrusion (52) to be placed. The compression spring (51) squeezes one side of the arc-shaped protrusion (52) so that a part of the arc-shaped protrusion (52) protrudes from the opening of the placement groove (42). The protruding part of the arc-shaped protrusion (52) is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

8. A waterproof cable branch box according to claim 1, characterized in that, Elastic sealing strips (23) are embedded on the left and right sides of the sealing plate (3).

Images