A waterproof low-voltage cable branch box

Abstract

The utility model belongs to cable branch box technical field especially relates to a waterproof low pressure cable branch box, including box and door, the side wall on the both sides of box is equipped with the heat dissipation opening, is provided with waterproof subassembly at the heat dissipation opening, and the waterproof subassembly includes first waterproof spare, including first frame body, a plurality of water baffle eaves and a plurality of first exhaust port, a plurality of first exhaust port set up on first frame body, a plurality of water baffle eaves are installed on the outside upper side of each first exhaust port correspondingly;Second waterproof spare, including second frame body, a plurality of first water stop and a plurality of second exhaust port, second frame body is set up between first frame body and box, a plurality of second exhaust port set up on second frame body, a plurality of first water stop are set up on second exhaust port and and second frame body integral connection correspondingly;The utility model has the beneficial effects that realize the waterproof protection of multidirectional, thereby significantly enhance rainwater interception effect, effectively improve waterproof effect while ensuring that the box has the ventilation and heat dissipation effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable branch boxes, and particularly relates to a waterproof low-voltage cable branch box. Background Technology

[0002] Low-voltage cable distribution boxes are core equipment in outdoor power distribution systems for cable branching and branch circuit distribution, and are widely used in open-air power distribution scenarios such as municipal roads, residential areas, and industrial and commercial parks. To ensure the operational stability of internal electrical components, ventilation openings are usually provided on the side walls of the box to allow air circulation between the inside and outside of the box and to dissipate the heat generated by the equipment operation. However, in outdoor environments, rainwater and condensation can easily penetrate into the box through the ventilation openings, causing corrosion of internal components, deterioration of insulation performance, and electrical faults. Therefore, the waterproof performance of the ventilation openings is crucial to the operational reliability of the distribution box.

[0003] In existing technologies, the waterproof structure of most cable distribution box heat dissipation vents can only provide a preliminary shielding effect against rainwater falling from above. The water blocking direction is singular, and it cannot block rainwater splashing in from the horizontal or oblique direction, so the waterproof protection effect is limited. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a waterproof low-voltage cable branch box.

[0005] In view of this, the present invention provides a waterproof low-voltage cable distribution box, including a box body and a box door. Ventilation vents are provided on the side walls of both sides of the box body, and waterproof components are installed at the ventilation vents. The waterproof components include: The first waterproof component includes a first frame, several water-blocking eaves and several first vents. The first frame is disposed on the box body, and the several first vents are arranged in a linear array along the Z direction on the first frame. The several water-blocking eaves are correspondingly installed on the upper outer side of each first vent. The second waterproof component includes a second frame, a plurality of first water-proof plates and a plurality of second vents. The second frame is disposed between the first frame and the box body. The plurality of second vents are arranged in a linear array along the Z direction on the second frame. The plurality of first water-proof plates are correspondingly disposed on the second vents and integrally connected to the second frame. The water-blocking eaves include a water-blocking top plate and two water-blocking side plates. The water-blocking top plate is used to block liquid that enters the first exhaust port along the Z direction, and the two water-blocking side plates are used to block liquid that enters the first exhaust port along the Y direction. A water-blocking chamber is formed between the water-blocking top plate and the two water-blocking side plates and the first exhaust port. The first water-blocking plate is located in the water-blocking chamber and is used to block liquid that enters the first exhaust port along the X direction.

[0006] Furthermore, the water-retaining top plate is inclined downward along the Z direction.

[0007] Furthermore, the second waterproof component also includes a plurality of second water-proof plates, which are installed at the second vent and integrally connected to the second frame. The second baffle plate is located below the first baffle plate along the Z direction and is inclined upward along the Z direction.

[0008] Furthermore, fasteners are inserted between the first frame and the second frame to connect the first frame and the second frame to the housing.

[0009] Furthermore, dustproof components are also installed at the heat dissipation vents.

[0010] Furthermore, the heat dissipation vent is also equipped with a positioning cylinder; Dustproof components include: A fixed frame is inserted into the positioning cylinder along the X direction and is fixedly connected to the positioning cylinder; The dust filter is mounted on a fixed frame and is connected to the heat dissipation vent.

[0011] Furthermore, the fixing frame and the positioning cylinder are connected by fasteners.

[0012] The beneficial effects of this utility model are: When this cable distribution box is in use, during rainfall, rainwater falling from above first contacts the water-retaining top plate of the eaves and is guided downwards along the sloping top plate, preventing it from directly entering the first vent. Rainwater drifting from the Y direction is blocked by the water-retaining side plates on both sides, also preventing it from directly entering the first vent, forming the first waterproof barrier. Similarly, rainwater drifting from the X direction is blocked by the first waterproof plate, preventing it from directly entering the first vent. This multi-directional waterproof protection significantly enhances the rainwater interception effect, effectively improving the waterproof performance while ensuring ventilation and heat dissipation within the box. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the cable branch box in this utility model; Figure 2 This is an exploded view of the waterproof component in this utility model; Figure 3 This is a structural cross-sectional view of the waterproof component in this utility model; Figure 4 This is a partial structural cross-sectional view of the box body in this utility model; The markings in the diagram are as follows: 1. Cabinet body; 11. Ventilation vent; 12. Positioning cylinder; 2. Cabinet door; 3. First waterproof component; 31. First frame; 32. Water-retaining eaves; 321. Water-retaining top plate; 322. Water-retaining side plate; 323. Waterproof chamber; 33. First exhaust port; 4. Second waterproof component; 41. Second frame; 42. First water-retaining plate; 43. Second exhaust port; 44. Second water-retaining plate; 5. Dustproof component; 51. Fixing frame; 52. Dustproof filter. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0015] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0016] Example 1:

[0017] This embodiment provides a waterproof low-voltage cable distribution box, including a box body 1 and a box door 2. Heat dissipation vents 11 are provided on the side walls of both sides of the box body 1, and waterproof components are installed at the heat dissipation vents 11. The waterproof components include: The first waterproof component 3 includes a first frame 31, a plurality of water-blocking eaves 32 and a plurality of first vents 33. The first frame 31 is disposed on the box 1. The plurality of first vents 33 are arranged in a linear array along the Z direction on the first frame 31. The plurality of water-blocking eaves 32 are correspondingly installed on the upper outer side of each first vent 33. The second waterproof component 4 includes a second frame 41, a plurality of first water-proof plates 42 and a plurality of second vents 43. The second frame 41 is disposed between the first frame 31 and the box 1. The plurality of second vents 43 are arranged in a linear array along the Z direction on the second frame 41. The plurality of first water-proof plates 42 are correspondingly disposed on the second vents 43 and are integrally connected to the second frame 41. The water-blocking eaves 32 include a water-blocking top plate 321 and two water-blocking side plates 322. The water-blocking top plate 321 is used to block liquid that enters the first exhaust port 33 along the Z direction, and the two water-blocking side plates 322 are used to block liquid that enters the first exhaust port 33 along the Y direction. A water-blocking chamber 323 is formed between the water-blocking top plate 321 and the two water-blocking side plates 322 and the first exhaust port 33. The first water-blocking plate 42 is located in the water-blocking chamber 323 and is used to block liquid that enters the first exhaust port 33 along the X direction.

[0018] In this technical solution, the cable branch box is used in outdoor low-voltage power distribution systems for cable line branching and branch power distribution control. It mainly consists of a box body 1, a box door 2, and waterproof components. Ventilation vents 11 are provided on both side walls of the box body 1 to allow air circulation and heat dissipation between the inside and outside of the box. The waterproof components installed at the ventilation vents 11 can prevent rainwater from entering the box body 1 from multiple directions, while also ensuring ventilation and heat dissipation performance, making it suitable for outdoor installation environments.

[0019] The enclosure 1 is a hollow rectangular shell structure made of metal with anti-corrosion treatment. The interior is enclosed to form an installation chamber for installing electrical components such as circuit breakers and terminals. An opening is provided on the front of the enclosure 1 for the installation and maintenance of internal components. On both side walls of the enclosure 1 along the X-direction, there are through-vents 11, rectangular openings that communicate with the installation chamber inside the enclosure 1, serving as a flow channel for hot air to escape and cold air to enter.

[0020] The door 2 is a rectangular plate structure, which is installed on one side edge of the front opening of the box 1 through a hinge structure. It can rotate around the hinge axis to open and close the opening of the box 1. When closed, the inner periphery of the door 2 fits against the opening end face of the box 1, which can form a closed protection for the inside of the box 1 and prevent external debris and moisture from entering the box from the front.

[0021] The first waterproof component 3 is an outer waterproof component, installed on the side of the heat dissipation vent 11 facing the outside of the housing 1. It consists of a first frame 31, several water-retaining eaves 32, and several first exhaust vents 33. The first frame 31 is a rectangular frame structure, fitted to the outer wall of the housing 1. The inner contour of the frame matches the outer contour of the heat dissipation vent 11, serving as the mounting base for the entire first waterproof component 3. Several first exhaust vents 33 are arranged in a linear array along the Z-direction on the first frame 31. Each first exhaust vent 33 is a through rectangular opening, serving as an outer channel for air circulation. Several water-retaining eaves 32 are correspondingly arranged on the upper outer side of each first exhaust vent 33. Each water-retaining eave 32 is integrally formed by a water-retaining top plate 321 and two water-retaining side plates 322.

[0022] Furthermore, the top water-blocking plate 321 is located above the first exhaust port 33 and is inclined downward along the Z direction. Its upper end is connected to the outer wall of the first frame 31, and its lower end extends away from the box 1. It is used to block rainwater from entering the first exhaust port 33 from above along the Z direction. The inclined plate surface can guide the rainwater received downward and discharge it. The two side water-blocking plates 322 are located on both sides of the first exhaust port 33 along the Y direction and both extend along the Z direction. The upper edge of the side water-blocking plates 322 is connected to the side edge of the top water-blocking plate 321 and is used to block rainwater from entering the first exhaust port 33 from the Y direction. The top water-blocking plate 321, the two side water-blocking plates 322 and the corresponding outer wall of the first frame 31 together form an inward-opening waterproof chamber 323, which serves as the first waterproof buffer space.

[0023] The second waterproof component 4 is an inner waterproof component, sandwiched between the first frame 31 and the outer wall of the housing 1. It consists of a second frame 41, several first waterproof plates 42, and several second vents 43. The second frame 41 is a rectangular frame structure, its dimensions matching those of the first frame 31. Its inner end face is attached to the outer wall of the housing 1, and its outer end face is attached to the inner end face of the first frame 31. Furthermore, fasteners are inserted between the first frame 31 and the second frame 41 to connect them to the housing 1. The fasteners pass through the first frame 31 and the second frame 41 horizontally and are screwed into the threaded holes on the side wall of the housing 1, locking both components together to the housing 1. Several second exhaust ports 43 are arranged in a linear array along the Z direction on the second frame 41, with their positions corresponding one-to-one with the first exhaust ports 33. They serve as inner channels for air circulation and together with the heat dissipation port 11 and the first exhaust ports 33, they form a complete ventilation path.

[0024] Several first baffle plates 42 are respectively arranged in the middle of each second vent 43, including a horizontal part and an inclined part. The horizontal part is integrally connected to the second frame 41 and extends outward along the X direction into the baffle chamber 323. The inclined part is integrally connected to the end of the horizontal part and is inclined downward along the Z direction. The downward inclination angle of the inclined part is greater than the inclination angle of the water-blocking top plate 321, so that the inclined part can be used to block rainwater from entering the first vent 33 from the outside along the X direction.

[0025] In summary, when this cable distribution box is in use, during rainfall, rainwater falling from above first contacts the water-retaining top plate 321 of the water-retaining eaves 32 and flows downward along the inclined water-retaining top plate 321, preventing it from directly falling into the first exhaust port 33. Rainwater drifting from the Y direction is blocked by the water-retaining side plates 322 on both sides, also preventing it from directly entering the first exhaust port 33, forming the first waterproof barrier. Rainwater drifting from the X direction is blocked by the first water-proof plate 42, similarly preventing it from directly entering the first exhaust port 33. This achieves multi-directional waterproof protection, significantly enhancing the rainwater interception effect and effectively improving the waterproof performance while ensuring the box body 1 has ventilation and heat dissipation capabilities.

[0026] Furthermore, the second waterproof component 4 also includes a plurality of second water-proof plates 44, which are installed at the second vent 43 and integrally connected to the second frame 41; wherein, the second water-proof plates 44 are located below the first water-proof plate 42 along the Z direction and are inclined upward along the Z direction.

[0027] Several second waterproof plates 44 are correspondingly installed at the lower edge of each second vent 43, located below the first waterproof plate 42 along the Z direction; the second waterproof plates 44 are inclined upward along the Z direction, and their lower ends are integrally connected to the second frame 41. The inclined plate surface can block rainwater splashing from the ground upward, preventing rainwater from entering the ventilation path along the oblique upward direction, and further enhancing the waterproof effect.

[0028] Example 2:

[0029] This embodiment provides a waterproof low-voltage cable branch box, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0030] Furthermore, a dustproof component 5 is also provided at the heat dissipation vent 11.

[0031] Furthermore, the heat dissipation vent 11 is also provided with a positioning cylinder 12; Dustproof component 5 includes: The fixed frame 51 is inserted into the positioning cylinder 12 along the X direction and is fixedly connected to the positioning cylinder 12. Dust filter 52 is mounted on fixed frame 51 and is connected to heat dissipation vent 11.

[0032] Furthermore, the fixing frame 51 and the positioning cylinder 12 are connected by fasteners.

[0033] In this technical solution, each heat dissipation port 11 is provided with a positioning cylinder 12 on the side facing the inside of the box 1. The positioning cylinder 12 is an annular cylindrical structure, integrally formed with the side wall of the box 1, and extends into the box along the X direction. The inner cavity of the cylinder is coaxially connected with the heat dissipation port 11 and is used to insert and fix the dustproof component 5, providing installation positioning and radial support for the dustproof component 5.

[0034] The fixing frame 51 is a ring-shaped structure, inserted into the interior of the positioning cylinder 12 along the X direction. The outer wall of the frame fits against the inner wall of the positioning cylinder 12, and is connected and fixed to the positioning cylinder 12 radially by fasteners, serving as the mounting support base for the dustproof component 5. The dustproof filter 52 is a porous mesh structure made of breathable and dustproof material, and is fixedly installed in the inner ring of the fixing frame 51. The mesh surface is perpendicular to the flow path of the heat dissipation vent 11 and is connected to the heat dissipation vent 11. Before entering the housing 1, the outside air passes through the dustproof filter 52, which can prevent dust in the air from entering the housing 1 with the airflow, while allowing air to pass through normally, maintaining smooth ventilation and heat dissipation.

[0035] Through the above structural design, outside air will pass through the dust filter 52 before entering the housing 1. Dust in the air is intercepted by the filter, preventing dust accumulation from affecting the operating performance of the internal electrical components. When it is necessary to clean or replace the dust filter 5, the housing door 2 can be opened, the fasteners on the fixing frame 51 can be unscrewed, and the fixing frame 51 along with the dust filter 52 can be pulled out from the positioning cylinder 12. The maintenance operation is convenient.

[0036] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A waterproof low-voltage cable distribution box, comprising a box body (1) and a box door (2), wherein heat dissipation vents (11) are provided on the side walls on both sides of the box body (1), characterized in that, A waterproof component is provided at the heat dissipation vent (11), the waterproof component comprising: The first waterproof component (3) includes a first frame (31), a plurality of water-blocking eaves (32) and a plurality of first vents (33). The first frame (31) is disposed on the box (1). The plurality of first vents (33) are arranged in a linear array along the Z direction on the first frame (31). The plurality of water-blocking eaves (32) are correspondingly installed on the outside of each first vent (33). The second waterproof component (4) includes a second frame (41), a plurality of first water-proof plates (42) and a plurality of second vents (43). The second frame (41) is disposed between the first frame (31) and the box (1). The plurality of second vents (43) are arranged in a linear array along the Z direction on the second frame (41). The plurality of first water-proof plates (42) are correspondingly disposed on the second vents (43) and integrally connected to the second frame (41). The water-blocking eaves (32) include a water-blocking top plate (321) and two water-blocking side plates (322). The water-blocking top plate (321) is used to block liquid that enters the first exhaust port (33) along the Z direction. The two water-blocking side plates (322) are used to block liquid that enters the first exhaust port (33) along the Y direction. A water-blocking chamber (323) is formed between the water-blocking top plate (321) and the two water-blocking side plates (322) and the first exhaust port (33). The first water-blocking plate (42) is located in the water-blocking chamber (323) and is used to block liquid that enters the first exhaust port (33) along the X direction.

2. The waterproof low-voltage cable branch box according to claim 1, characterized in that, The water-blocking top plate (321) is inclined downward along the Z direction.

3. A waterproof low-voltage cable branch box according to claim 1, characterized in that, The second waterproof component (4) also includes a plurality of second water-proof plates (44), which are installed at the second vent (43) and integrally connected to the second frame (41); The second water-blocking plate (44) is located below the first water-blocking plate (42) along the Z direction and is inclined upward along the Z direction.

4. A waterproof low-voltage cable branch box according to claim 1, characterized in that, Fasteners are provided between the first frame (31) and the second frame (41) to connect the first frame (31) and the second frame (41) to the box (1).

5. A waterproof low-voltage cable branch box according to claim 1, characterized in that, A dustproof component (5) is also provided at the heat dissipation port (11).

6. A waterproof low-voltage cable branch box according to claim 5, characterized in that, The heat dissipation port (11) is also provided with a positioning cylinder (12); The dustproof component (5) includes: A fixed frame (51) is inserted into the positioning cylinder (12) along the X direction and is fixedly connected to the positioning cylinder (12); Dust filter (52) is mounted on a fixed frame (51) and connected to a heat dissipation port (11).

7. A waterproof low-voltage cable branch box according to claim 6, characterized in that, The fixed frame (51) and the positioning cylinder (12) are connected by fasteners.

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