Outdoor rainproof distribution box

Abstract

The utility model discloses an outdoor rain -proof distribution box belongs to electric power equipment technical field, aims at solving the problem that rainwater can possibly infiltrate the inside of box through the heat dissipation hole, causes the problem of electrical component damp damage. Its technical scheme main points are: heat dissipation hole adjusting device includes: adjustable louver assembly, bending channel, drainage trigger assembly, measurement control assembly, when the drainage trigger assembly floats to the preset position, the drainage channel opens and carries out the drainage, and the drainage trigger assembly triggers the measurement control assembly, and the measurement control assembly controls the adjustable louver assembly to change the size of the opening and closing gap through the data of collection. The utility model utilizes the concave type bending channel, utilizes rainwater inertia to block its into the distribution box inside, and the drainage channel of water collecting area cooperates with the sliding column and forms the plugging -drainage mechanism, and the stability of magnetic piece attraction positioning guarantee when draining, and the water hole solves the problem of light rain ponding, and multiple structures cooperate and reduce the damage of electrical component caused by rainwater invasion.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and more specifically, it relates to an outdoor rainproof distribution box. Background Technology

[0002] A distribution box is a set of switchgear, measuring instruments, protective electrical appliances and auxiliary equipment that are assembled in a box according to electrical wiring requirements. It enables controllable power distribution to electrical equipment and protects against short circuits, overloads and leakage currents.

[0003] To ensure the stable operation of internal electrical components, existing distribution boxes and cabinets typically have ventilation holes on their side walls to meet heat dissipation requirements. However, this design is prone to significant drawbacks in rainy weather: rainwater may seep into the box through the ventilation holes, causing electrical components to become damp and damaged, which not only affects the normal operation of the power distribution system but also poses safety hazards.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an outdoor rainproof distribution box to solve the above-mentioned problems.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: an outdoor rainproof distribution box, comprising a distribution box body, wherein a heat dissipation hole adjustment device is fitted and installed at the opening of the side wall of the distribution box body, the heat dissipation hole adjustment device comprising: An adjustable louver assembly, wherein the opening and closing gap between the louvers forms heat dissipation holes, and the adjustable louver assembly is disposed on the side wall of the distribution box body. A bendable channel is used to connect the interior of the distribution box body with the heat dissipation holes. A water collection area is provided at the bottom of the bendable channel, and a drainage channel is provided on the water collection area to drain the water accumulated in the water collection area. A drainage triggering component is used to block the drainage channel, and the drainage triggering component is slidably disposed in the water collection area; A metering control component is used to determine the current rainfall based on the triggering frequency of the drainage triggering component received per unit time. The metering control component is connected to the drainage triggering component and the adjustable louver component. When water accumulates in the water collection area and causes the drainage trigger component to float to the preset position, the drainage channel opens to drain water. At the same time, the drainage trigger component triggers the metering control component, which controls the adjustable louver component to change the opening and closing gap size based on the collected data.

[0007] The present invention is further configured such that the drainage triggering component includes: a buoyancy plate, which is disposed in the water collection area and is used to generate buoyancy for the drainage triggering component to float. A sliding column is embedded in the drainage channel to form a blockage. The buoyancy plate is fixedly connected to the sliding column. The sliding column has a hollow channel along the axial direction and a water guide hole is radially opened on the side wall. The water guide hole is connected to the drainage channel through the hollow channel. A trigger element is used to connect with the metering control component. The trigger element is connected to the buoyancy plate and is used to rise and fall synchronously with the buoyancy plate.

[0008] The present invention is further configured such that: the drainage triggering component also includes a magnetic component for adsorbing the buoyancy plate to float, and the magnetic component is fixedly disposed on the bent channel; When the buoyancy plate rises to the preset position, the magnetic component attracts the buoyancy plate to form a positioning. At this time, the resultant force of the adsorption force and the buoyancy force of the remaining water is greater than the weight of the buoyancy plate, thus maintaining the buoyancy plate in a fixed position. Once the water has drained, the buoyancy of the buoyancy plate disappears, and its own weight exceeds the attraction force of the magnetic components, causing the sliding column to fall and reset, thus re-sealing the drainage channel.

[0009] The present invention is further configured such that: the bent channel has a drain hole in the water collection area, the drain hole is connected to the drainage channel, and its diameter is smaller than that of the drainage channel. The position of the drain hole is lower than the initial position of the buoyancy plate, so as to slowly drain water during light rain.

[0010] The present invention is further configured such that a filter screen is fixedly installed at the drain hole of the bent channel to reduce impurities from clogging the drain hole.

[0011] The present invention is further configured such that the edge of the buoyancy plate is fitted with a gap between it and the inner wall of the water collection area.

[0012] The present invention is further configured such that the metering control component includes: Fixed contacts are fixed inside the distribution box body; The movable contact is fixedly mounted on the drainage trigger assembly and moves up and down synchronously with it. Both the fixed contact and the movable contact are conductive metal sheets, and an electrical pulse signal is generated when the two contacts. The controller is fixed inside the distribution box and is electrically connected to the fixed contacts and the adjustable louver assembly. The controller determines the rainfall based on the number of electrical pulse signals received per unit time and controls the adjustable louver assembly to adjust to a preset opening and closing gap.

[0013] The present invention is further configured such that: the distribution box body is provided with a guide sleeve in the water collection area, the sliding column passes through the guide sleeve and forms a sliding fit with the guide sleeve, and the inner wall of the guide sleeve is provided with a limiting protrusion to limit the maximum upward stroke of the sliding column.

[0014] The present invention is further configured such that the adjustable louver assembly includes: The louvered window slats are rotatably mounted on the main body of the distribution box, and there are several louvered window slats; The motor is fixedly installed on the main body of the distribution box. The output shaft of the motor is connected to the rotating shaft of several louvered windows through a transmission belt. The motor is electrically connected to the metering and control components.

[0015] The present invention is further configured such that: a high water level Hall sensor is fixedly installed on the inner wall of the water collection area for real-time monitoring of the water level in the water collection area; the high water level Hall sensor is positioned higher than the water level corresponding to the maximum upward position of the buoyancy plate in the water collection area; and the high water level Hall sensor is electrically connected to the metering and control component.

[0016] Compared with the prior art, the beneficial effects of this utility model are: Firstly, by using the U-shaped bend channel, the inertia of rainwater is used to prevent it from entering the distribution box; the drainage channel in the water collection area works with the sliding column to form a sealing-drainage mechanism, the magnetic parts attract and position to ensure stability during drainage, and the drain hole solves the problem of water accumulation in light rain. The multiple structures work together to reduce the damage to electrical components caused by rainwater intrusion. Secondly, the adjustable louver assembly can adjust the opening and closing gap according to the rainfall. After the metering and control component judges the rainfall through pulse signals, it controls the louvers to maintain a larger gap to ensure heat dissipation when the rainfall is light, and to reduce the gap to enhance rain protection when the rainfall is heavy, thus taking into account both the equipment's heat dissipation needs and rain protection safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the heat dissipation hole adjustment device; Figure 3 Schematic diagram of the cross-sectional structure of the heat dissipation hole adjustment device Figure 1 ; Figure 4 Schematic diagram of the cross-sectional structure of the heat dissipation hole adjustment device Figure 2 ; Figure 5 Schematic diagram of the cross-sectional structure of the heat dissipation hole adjustment device Figure 3 ; Figure 6 This is a schematic diagram of the exploded structure of the drainage triggering component and the metering control component.

[0018] Reference numerals in the attached diagram: 1. Distribution box body; 2. Adjustable louver assembly; 3. Bending channel; 4. Drainage trigger assembly; 5. Metering control assembly; 6. Drainage channel; 7. Buoyancy plate; 8. Sliding column; 9. Water guide hole; 10. Trigger; 11. Magnetic component; 12. Fixed contact; 13. Moving contact; 14. Controller; 15. Guide sleeve; 16. Drain hole; 17. High water level Hall sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. Example

[0020] An outdoor rainproof distribution box, such as Figures 1-6 As shown, the distribution box includes a main body 1. A heat dissipation hole adjustment device is fitted into the side wall opening of the main body 1. The heat dissipation hole adjustment device includes an adjustable louver assembly 2, a bending channel 3, a drainage trigger assembly 4, and a metering control assembly 5. The adjustable louver assembly 2 includes louver blades rotatably mounted on the main body 1 and a motor fixedly mounted on the main body 1. Several louver blades are provided, and the opening and closing gaps between the louvers form heat dissipation holes. At the same time, the output shaft of the motor is connected to the rotating shaft of several louver blades through a transmission belt, so that the size of the heat dissipation holes can be changed by rotating the output shaft of the motor. The side walls of the motor output shaft and the rotating shaft of the louver blades that are in contact with the transmission belt are provided with teeth, and the transmission belt is also provided with meshing teeth. The meshing of the teeth ensures the stability of the transmission.

[0021] Among them, such as Figures 3-5As shown, the bent channel 3 is used to connect the interior of the distribution box body 1 with the heat dissipation hole, so that the external airflow needs to flow through the bent channel 3. The bent channel 3 is set as a U-shaped channel. When it rains, rainwater enters the bent channel 3 from the heat dissipation hole. Air can enter the distribution box body 1 through the bent path. However, due to the inertia of the rainwater, it cannot bypass the bend and will be blocked by the channel wall when it falls or splashes. A water collection area is set at the bottom of the bent channel 3, and a drainage channel 6 is opened on the water collection area. Thus, the rainwater will accumulate in the water collection area and flow to the outside of the distribution box body 1 along the bottom drainage channel 6.

[0022] Among them, such as Figures 1-5 As shown, a rain shield is fixedly installed on the outside of the distribution box body 1 at the position corresponding to the drainage channel 6. The rain shield is fixed to the outside of the drainage channel 6, with its edge extending 10cm beyond the edge of the drainage channel 6. A 5cm drainage gap is left between the bottom of the distribution box body 1 to prevent external rainwater from flowing back from the drainage channel 6 into the inside of the bend channel 3.

[0023] At the same time, such as Figures 3-6 As shown, the drainage trigger component 4 is set in the water collection area to block the drainage channel 6. The drainage trigger component 4 includes a buoyancy plate 7 set in the water collection area, a sliding column 8 for embedding in the drainage channel 6 to form a blockage, a trigger element 10 for connecting with the metering control component 5, and a magnetic element 11 for adsorbing the buoyancy plate 7 to float. A magnet is fixedly set at the contact point between the buoyancy plate 7 and the magnetic element 11, thereby achieving the adsorption effect between the magnetic element 11 and the buoyancy plate 7. At the same time, the rest of the buoyancy plate 7 is made of closed-cell foam or plastic material, so that the overall density of the buoyancy plate 7 is less than the density of water, so that when the water collection area begins to accumulate water, the buoyancy plate 7 forms the buoyancy force for the drainage trigger component 4 to float. At the same time, the buoyancy plate 7 is fixedly connected to the sliding column 8, thereby driving the sliding column 8 to move upward together.

[0024] At the same time, such as Figure 4 and Figure 6 As shown, the water collection area is designed as a rectangular trough structure adapted to the bottom of the bent channel 3. The length of the trough is the same as the width of the bent channel 3, and the depth of the trough is set to 50-80mm. The edge of the buoyancy plate 7 is fitted with the inner wall of the water collection area with a gap ≤2mm, and the plate area is not less than 80% of the cross-sectional area of ​​the water collection area, ensuring stable buoyancy and preventing jamming during lifting and lowering. Furthermore, a polytetrafluoroethylene (PTFE) wear-resistant strip is embedded around the edge of the buoyancy plate 7. PTFE has a low coefficient of friction and corrosion resistance, preventing jamming caused by scale and impurities. The inner wall of the water collection area is sprayed with a polyurea waterproof and wear-resistant coating with a surface roughness Ra≤0.8μm, further reducing the frictional resistance of the buoyancy plate 7 during lifting and lowering.

[0025] At the same time, such as Figure 4 As shown, in its initial state, the sliding column 8 is embedded in the drainage channel 6 to form a blockage, and as... Figure 4 and Figure 6 As shown, the sliding column 8 has a hollow channel along its axial direction and a water guide hole 9 is radially opened on its side wall. The water guide hole 9 is connected to the drainage channel 6 through the hollow channel. As the water accumulation in the water collection area increases, the buoyancy plate 7 gradually rises with the water level, and the sliding column 8 also gradually exits from the drainage channel 6. When the buoyancy plate 7 rises to the preset position, the water guide hole 9 on the sliding column 8 moves up to the position where it contacts the water inside the water collection area. The water is discharged into the drainage channel 6 through the water guide hole 9 and the hollow channel of the sliding column 8, and is guided to the outside of the distribution box.

[0026] At the same time, such as Figures 4-6 As shown, the magnetic component 11 is fixedly installed on the bent channel 3. When the buoyancy plate 7 floats to the preset position, the magnetic component 11 and the buoyancy plate 7 attract each other to form a positioning. At this time, the resultant force of the adsorption force and the buoyancy force of the remaining water is greater than the weight of the buoyancy plate 7, so that the buoyancy plate 7 is kept in a fixed position during the drainage process, ensuring drainage efficiency.

[0027] Once the accumulated water is drained, the buoyancy of the buoyancy plate 7 disappears, and its own weight is greater than the attraction force of the magnetic component 11, causing the sliding column 8 to fall and reset, and re-seal the drainage channel 6, thus completing one cycle of water storage and drainage, and entering a new cycle of water storage and drainage.

[0028] like Figures 5-6 As shown, the trigger 10 is connected to the buoyancy plate 7 and is used to rise and fall synchronously with the buoyancy plate 7. The trigger 10 passes through the bent channel 3 and contacts the metering control component 5. The bent channel 3 is provided with a sealing ring corresponding to the position where the trigger 10 passes through. The sealing ring is an aging-resistant rubber O-ring, which is embedded in the groove of the inner wall of the through hole of the bent channel 3 and is interference-fitted with the outer wall of the trigger 10 to ensure reliable sealing during rise and fall.

[0029] When the buoyancy plate 7 floats to the preset position, the metering control component 5 is activated by the trigger 10. Then, the metering control component 5 determines the number of electrical pulse signals received per unit time, and then compares it with the corresponding threshold to control the adjustable louver component 2 to adjust to the preset opening and closing gap, so as to ensure heat dissipation while reducing rainwater entry.

[0030] At the same time, such as Figure 4 and Figure 6 As shown, the main body of the distribution box 1 is provided with a guide sleeve 15 in the water collection area. The guide sleeve 15 is vertically fixed to the bottom of the water collection area. The sliding column 8 passes through the guide sleeve 15 and forms a sliding fit with the guide sleeve 15. The inner wall of the guide sleeve 15 is provided with a limiting protrusion to limit the maximum upward stroke of the sliding column 8. When the buoyancy plate 7 drives the sliding column 8 to fall and reset, the guide sleeve 15 ensures that the sliding column 8 can re-seal the drainage channel 6, thus ensuring the stability of use.

[0031] like Figure 6As shown, the metering control component 5 includes a fixed contact 12 fixed inside the distribution box body 1, a movable contact 13 fixed to the trigger 10 by screws and moving synchronously with it, and a controller 14 fixed inside the distribution box body 1. The fixed contact 12 and the movable contact 13 are both conductive metal sheets. When the two contacts, the electrical pulse signal generated is transmitted to the controller 14 through the wire. At the same time, the controller 14 is electrically connected to the adjustable louver assembly 2. The controller 14 presets a pulse threshold and judges the rainfall based on the number of electrical pulse signals received per unit time, and controls the adjustable louver assembly 2 to adjust to the preset opening and closing gap.

[0032] The controller 14 has three preset threshold levels: when the number of pulses per unit time is less than 3, the opening and closing gap of the louvers is adjusted to 20mm; when it is 3-8 times, it is adjusted to 10mm; and when it is more than 8 times, it is adjusted to 5mm.

[0033] At the same time, such as Figure 4 As shown, the bent channel 3 has a drain hole 16 in the water collection area. The drain hole 16 is connected to the drainage channel 6 through a drain hose, and its diameter is smaller than that of the drainage channel 6. The position of the drain hole 16 is lower than the initial position of the buoyancy plate 7, which is used to slowly drain water during light rain, so as to avoid the water accumulation in the water collection area not reaching the floating standard of the buoyancy plate 7, which would cause rainwater to accumulate and affect subsequent inspection. In addition, a filter screen is fixedly installed at the drain hole 16 in the bent channel 3 to reduce impurities from clogging the drain hole 16, and also to facilitate cleaning by the staff during maintenance.

[0034] At the same time, such as Figure 4 As shown, a high-water-level Hall sensor 17 is also fixedly installed on the inner wall of the water collection area to monitor the water level in the water collection area in real time. The high-water-level Hall sensor 17 is positioned higher than the water level corresponding to the maximum floating position of the buoyancy plate 7 in the water collection area. The high-water-level Hall sensor 17 is electrically connected to the metering control component 5. When the water level exceeds the water level corresponding to the maximum floating position of the buoyancy plate 7 in the water collection area, the drainage trigger component 4 is in an overload state. The high-water-level Hall sensor 17 outputs a switching signal to the controller 14, thereby controlling the motor of the adjustable louver component 2 to drive the louvers to close completely, preventing rainwater from entering.

[0035] Working principle: When it rains, rainwater enters through the heat dissipation hole regulating device of the distribution box, and the airflow enters the body 1 of the distribution box through the bending channel 3. Due to inertia, the rainwater is blocked by the inner wall of the bending channel 3 and collects in the water collection area at the bottom of the bending channel 3.

[0036] When it is drizzling, the water is slowly discharged through the drain hole 16, the buoyancy plate 7 does not float, the sliding column 8 blocks the drainage channel 6, and the adjustable louver assembly 2 remains in its current state.

[0037] During moderate or heavy rain, the water accumulation in the catchment area increases, and the buoyancy plate 7 gradually rises with the water level. When it rises to the preset position, the magnetic component 11 on the bent channel 3 attracts and positions the buoyancy plate 7. The combined force of the attraction force and the buoyancy of the remaining water is greater than the weight of the buoyancy plate 7, thus maintaining the fixed position of the buoyancy plate 7.

[0038] At the same time, the sliding column 8, which is fixedly connected to the buoyancy plate 7, rises synchronously, and the water guide hole 9 on it moves up to the position where it contacts the water at the bottom of the water collection area. The water is discharged into the drainage channel 6 through the hollow channel of the water guide hole 9 and the sliding column 8, and is guided to the outside of the distribution box.

[0039] During this process, when the buoyancy plate 7 moves upward, the trigger 10 will drive the moving contact 13 to move upward together, thereby contacting the fixed contact 12 inside the power distribution box body 1. The resulting electrical pulse signal is transmitted to the controller 14 through the wire, and the controller 14 records the signal.

[0040] Once the accumulated water has been drained, the buoyancy plate 7, being heavier than the magnetic force of the magnetic component 11, causes the sliding column 8 to fall and reset, re-sealing the drainage channel 6 and initiating a new cycle of water storage and drainage.

[0041] The controller 14 determines the rainfall based on the number of electrical pulse signals received per unit time. The more pulses, the greater the rainfall. In turn, it controls the motor of the adjustable louver assembly 2 to start: the motor drives all the louver blades to rotate synchronously through the transmission belt, adjusting the opening and closing gap. The greater the rainfall, the smaller the gap, reducing the amount of rainwater entering.

[0042] When the rainfall is so heavy that the drainage speed of drainage channel 6 cannot keep up with the water collection speed, the water level in the collection area continues to rise, touching the detection end of the high water level Hall sensor 17. The high water level Hall sensor 17 immediately sends a "high level abnormal signal" to the controller 14, triggering emergency linkage.

[0043] The controller 14 prioritizes responding to abnormal signals from the high water level Hall sensor 17, which has a higher priority than pulse frequency signals. The system determines whether the system is in a "drainage overload" state by judging whether the "water level threshold exceeds the standard and the pulse signal is continuously high frequency or there is no reset pulse" through the program. When it is determined that the system is in this state, the emergency mode is immediately activated.

[0044] The controller 14 sends a "fully closed command" to the motor of the adjustable louver assembly 2: the motor drives all the louvers to rotate synchronously via the transmission belt until the opening and closing gap is ≤2mm, reducing or even cutting off the path of rainwater into the bending channel 3 from the source, thus relieving the water collection pressure. At this time, the state of the louvers is not affected by the pulse frequency, but is controlled only by the signal from the high water level Hall sensor 17 and the emergency logic.

[0045] When the water level drops below the threshold of the high water level Hall sensor 17, the high water level Hall sensor 17 sends a "low level recovery signal". The controller 14 exits the emergency mode after a 30-second delay, which helps to avoid misjudgment of water level fluctuations.

[0046] To exit emergency mode, first control the blinds to open gradually from 2mm to 5mm to 10mm in three steps, with a 10-second interval between each adjustment, and then restore the normal logic of "pulse frequency to determine rainfall".

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An outdoor rainproof distribution box, comprising a distribution box body (1), characterized in that: A heat dissipation hole adjustment device is fitted into the side wall opening of the distribution box body (1), and the heat dissipation hole adjustment device includes: Adjustable louver assembly (2), the opening and closing gap between the louvers forms heat dissipation holes, the adjustable louver assembly (2) is set on the side wall of the power distribution box body (1); The bent channel (3) is used to connect the inside of the distribution box body (1) with the heat dissipation hole. A water collection area is provided at the bottom of the bent channel (3), and a drainage channel (6) is provided on the water collection area to drain the water accumulated in the water collection area. A drainage trigger component (4) is used to block the drainage channel (6), and the drainage trigger component (4) is slidably disposed in the water collection area; The metering control component (5) is used to determine the current rainfall based on the triggering frequency of the drainage trigger component (4) received per unit time. The metering control component (5) is connected to the drainage trigger component (4) and the adjustable louver component (2). When water accumulates in the water collection area and causes the drainage trigger component (4) to float to the preset position, the drainage channel (6) opens to drain water. At the same time, the drainage trigger component (4) triggers the metering control component (5). The metering control component (5) controls the adjustable louver component (2) to change the opening and closing gap size by collecting data.

2. The outdoor rainproof distribution box according to claim 1, characterized in that: The drainage triggering component (4) includes: a buoyancy plate (7) disposed in the water collection area to generate buoyancy for the drainage triggering component (4); A sliding column (8) is embedded in the drainage channel (6) to form a blockage. The buoyancy plate (7) is fixedly connected to the sliding column (8). The sliding column (8) has a hollow channel along the axial direction and a water guide hole (9) is radially opened on the side wall. The water guide hole (9) is connected to the drainage channel (6) through the hollow channel. A trigger (10) is used to connect to the metering control component (5). The trigger (10) is connected to the buoyancy plate (7) and is used to rise and fall synchronously with the buoyancy plate (7).

3. An outdoor rainproof distribution box according to claim 2, characterized in that: The drainage trigger assembly (4) also includes a magnetic component (11) for adsorbing the buoyancy plate (7) to float, the magnetic component (11) being fixedly mounted on the bent channel (3); When the buoyancy plate (7) floats to the preset position, the magnetic component (11) attracts the buoyancy plate (7) to form a positioning. At this time, the resultant force of the adsorption force and the buoyancy of the remaining water is greater than the weight of the buoyancy plate (7), thus maintaining the fixed position of the buoyancy plate (7). Once the water has drained, the buoyancy of the buoyancy plate (7) disappears, and its weight is greater than the adsorption force of the magnetic component (11), causing the sliding column (8) to fall and reset, and re-seal the drainage channel (6).

4. An outdoor rainproof distribution box according to claim 1, characterized in that: The bend channel (3) has a drain hole (16) in the water collection area. The drain hole (16) is connected to the drainage channel (6), and its diameter is smaller than that of the drainage channel (6). The position of the drain hole (16) is lower than the initial position of the buoyancy plate (7) for slow drainage during light rain.

5. An outdoor rainproof distribution box according to claim 2, characterized in that: The bent channel (3) has a filter screen fixedly installed at the drain hole (16) to reduce impurities from clogging the drain hole (16).

6. An outdoor rainproof distribution box according to claim 2, characterized in that: The edge of the buoyancy plate (7) is fitted with the inner wall of the water collection area with a gap.

7. An outdoor rainproof distribution box according to claim 1, characterized in that: The metering control component (5) includes: a fixed contact (12) fixed inside the distribution box body (1); The movable contact (13) is fixedly installed on the drainage trigger assembly (4) and moves up and down synchronously with it. Both the fixed contact (12) and the movable contact (13) are conductive metal sheets, and an electrical pulse signal is formed when the two contacts. The controller (14) is fixed inside the power distribution box body (1), and the controller (14) is electrically connected to the fixed contact (12) and the adjustable louver assembly (2); The controller (14) determines the amount of rainfall based on the number of electrical pulse signals received per unit time and controls the adjustable louver assembly (2) to adjust to the preset opening and closing gap.

8. An outdoor rainproof distribution box according to claim 2, characterized in that: The main body (1) of the distribution box is provided with a guide sleeve (15) in the water collection area. The sliding column (8) passes through the guide sleeve (15) and forms a sliding fit with the guide sleeve (15). The inner wall of the guide sleeve (15) is provided with a limiting protrusion to limit the maximum upward stroke of the sliding column (8).

9. An outdoor rainproof distribution box according to claim 1, characterized in that: The adjustable louver assembly (2) includes: The louvered window blades are rotatably mounted on the main body (1) of the distribution box, and there are several louvered window blades; The motor is fixedly installed on the main body (1) of the distribution box. The output shaft of the motor is connected to the rotating shaft of several louvered windows through a transmission belt. The motor is electrically connected to the metering control component (5).

10. An outdoor rainproof distribution box according to claim 2, characterized in that: A high water level Hall sensor (17) is also fixedly installed on the inner wall of the water collection area to monitor the water level in the water collection area in real time. The high water level Hall sensor (17) is located higher than the water level corresponding to the maximum floating position of the buoyancy plate (7) in the water collection area. The high water level Hall sensor (17) is electrically connected to the metering control component (5).

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