Leakage-proof power construction junction box

Abstract

The utility model discloses an electric power construction terminal box of leakage protection relates to construction terminal box technical field. Including: box body, the arbitrary two position of periphery respectively wear and insert the installation of several electric power structures, the protection box is installed in the midpoint inside the box body, and the connecting structure between the arbitrary two electric power structures in different positions is fixed in the inside of protection box, the upper observation cover plate is adapted with the box mouth of box body top, is used for assembling in the top of box body, several filling valve pipes are evenly set up in the top of upper observation cover plate, and with the edge of protection box is aligned. The utility model discloses the centralized storage and physical isolation of connecting structure through protection box, and the full -enclosing sealing structure formed in annular sealing cavity with the cooperation of the insulating sealing material of filling valve pipe injection, has improved the leakage hidden danger of traditional terminal box connection position easy exposure, the sealing not thorough leads.

Description

Technical Field

[0001] This utility model relates to the field of construction junction box technology, specifically to a leakage-proof electrical construction junction box. Background Technology

[0002] A leakage-proof electrical construction junction box is a protective device used for line connections during electrical construction. Its main function is to protect the line connection points from external environmental influences and prevent leakage accidents.

[0003] A search revealed that Chinese utility model patent application with publication number "CN221574806U" proposes "a junction box for power construction", which is connected to a U-shaped plate through a two-stage adjustment mechanism; an upper pressure plate is fixedly connected to the U-shaped plate; a lower pressure plate is connected to the junction box and located below the upper pressure plate; both the upper and lower pressure plates are located in the wiring compartment, which can fix multiple wires simultaneously, or operate and replace a single wire individually.

[0004] However, in actual use, the aforementioned devices and similar devices have their connection structures directly exposed inside the main cavity of the junction box without a dedicated enclosed protective area. They rely solely on the junction box shell for initial isolation. When the shell develops cracks or gaps due to environmental corrosion, mechanical impact, or other factors, external contaminants such as moisture and dust can easily penetrate directly into the connection point, causing the insulation performance of the connection to gradually deteriorate and posing a potential safety hazard of leakage. Utility Model Content

[0005] The purpose of this invention is to provide a leakage-proof electrical construction junction box to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a leakage-proof electrical construction junction box, comprising:

[0007] The box has several electrical structures installed at any two locations on its outer perimeter.

[0008] The protective box is installed at the midpoint inside the box, and the connection structure between any two electrical structures in different positions is fixed inside the protective box.

[0009] The upper observation cover plate is adapted to fit the opening at the top of the box and is used for mounting on the top of the box.

[0010] Several filling valve tubes are evenly distributed on the top of the upper observation cover plate and aligned with the edge of the protective box. They are used to seal and insulate the connection structure inside the protective box by filling it with insulating and sealing material.

[0011] Furthermore, the top surface of the protective box and the bottom surface of the upper observation cover plate are in contact with each other, forming an annular sealing cavity for receiving insulating sealing material;

[0012] The annular sealing cavity is circular in shape. The inner wall of the annular sealing cavity maintains a uniform gap with the outer periphery of the connecting structure. The outer wall of the annular sealing cavity is integrally injection molded with the top edge of the protective box.

[0013] Furthermore, when the insulating sealing material is injected through the filling valve tube, the insulating sealing material flows along the gaps in the annular sealing cavity, gradually filling all the gaps between the connecting structure and the protective box.

[0014] Furthermore, the power structure includes:

[0015] The terminal block is embedded in the outer wall of the box, with its two ends located on the inner and outer sides of the box, respectively.

[0016] An insulating sleeve is fitted around the outer periphery of the end of the terminal block located inside the box.

[0017] The associated wiring harness has one end fixed to the end of the terminal block located inside the box, and the other end passes through the protective box and is wound and connected to the connection structure.

[0018] Furthermore, the connection structure includes:

[0019] The current association frame has its two ends fixed inside the protective box, and the association wire harness passes through one end of the protective box and is wrapped around the outside of the current association frame's legs.

[0020] Furthermore, a screw hole is provided at the middle of the bottom of the box body, and the screw hole extends into the protective box, where a positioning bolt is installed.

[0021] Furthermore, an observation window is provided at the midpoint of the top of the upper observation cover. The bottom surface of the upper observation cover contacts the top surface of the protective box through the observation window, forming the annular sealing cavity.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This leakage-proof electrical construction junction box improves the leakage hazards caused by easily exposed connection parts and incomplete sealing in traditional junction boxes by centrally storing and physically isolating the connection structure in the protective box, combined with the fully enclosed sealing structure formed by the insulating sealing material injected into the filling valve pipe in the annular sealing cavity.

[0024] In addition, by using the protective box as a "safety cabin" for the connecting structure, the annular sealing cavity formed by the close contact between its top surface and the bottom surface of the upper observation cover not only guides the insulating sealing material to flow evenly along the gap, ensuring that all gaps between the connecting structure and the protective box are completely filled, forming an insulating barrier without dead angles, but also avoids the overflow and failure of the sealing material through the integrated contact design with the upper observation cover.

[0025] Furthermore, this application further cuts off the path of current conduction to the box by wrapping the inner end of the terminal block with the insulating sleeve in the power structure and directional connection of the associated wire harness through the protective box, thereby reducing the risk of leakage from the source.

[0026] Finally, the design of the observation window on the observation cover retains the function of visually inspecting the internal connection structure and sealing status of the protective box, and through contact and cooperation with the top surface of the protective box, it does not damage the integrity of the annular sealing cavity, thus achieving a balance between protection and observation. Attached Figure Description

[0027] Figure 1 This is an isometric drawing of the present invention;

[0028] Figure 2 This is a diagram showing the internal structure of the present invention;

[0029] Figure 3 This is a top view of the present invention.

[0030] In the diagram: 1. Box body; 2. Ventilation mesh; 3. Terminal block; 4. Filler valve tube; 5. Upper observation cover; 6. Observation window; 7. Protective box; 8. Connecting wire harness; 9. Current connection frame; 10. Positioning bolt; 11. Insulating sleeve. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Before understanding the technical solution proposed in this application, it is important to understand that the specific application scenarios of the device are temporary or permanent connection nodes of various low-voltage / high-voltage lines during power construction. It is especially suitable for humid environments (such as basements, tunnels, outdoor rain-soaked areas), dusty construction sites, high-altitude operations (such as street light poles, transmission line tower bases), and underground pipelines, which are prone to leakage risks.

[0033] like Figures 1-3As shown, this utility model provides a leakage-proof electrical construction junction box, specifically including:

[0034] Box 1, as the main structure, has several electrical structures installed at any two positions on its periphery. These electrical structures are used to connect external cables and transmit power. The protective box 7 is fixedly installed in the midpoint area inside box 1. Its interior is used to accommodate and fix the connection structure between any two electrical structures from different positions, forming a centralized and safe electrical connection environment. The upper observation cover 5 is perfectly matched to the top opening of box 1 and can be tightly fitted to the top of box 1, serving as a seal and protection function, while also facilitating later observation and maintenance. Several filling valve tubes 4 are evenly distributed in the top area of ​​the upper observation cover 5 and are aligned with the edge of the protective box 7. They are used to achieve comprehensive sealing and insulation of the internal connection structure by filling the protective box 7 with insulating sealing material. In addition, ventilation mesh 2 for heat dissipation is also provided on the periphery of box 1.

[0035] Furthermore, in the technical solution proposed in this application, the top surface of the protective box 7 is in direct contact with the bottom surface of the upper observation cover 5, forming an annular sealed cavity between them, which is used to accommodate the injected insulating sealing material.

[0036] It should be noted that in this technical solution, the annular sealing cavity has a circular structure, and its inner wall and the outer periphery of the connecting structure always maintain a uniform gap to ensure that the sealing material can fully wrap the connecting structure. Its outer wall is integrally injection molded with the top edge of the protective box 7, ensuring the integrity and sealing of the structure. It is worth noting that in this implementation scheme, to ensure normal power supply in actual operation, the sealing material is specifically a two-component room temperature vulcanizing silicone rubber, which can quickly cure at room temperature to form a solvent-free and bubble-free sealing layer. This layer can tightly fill the gap between the annular sealing cavity and the connecting structure, achieving complete wrapping of the connection points (such as cable joints and terminal blocks), without corroding or electrochemically reacting with the conductor material (such as copper or aluminum), ensuring the continuity and stability of current transmission. It should also be noted that when the insulating sealing material is injected into the cavity through the filling valve tube 4, the material will flow naturally along the gap of the annular sealing cavity, gradually filling all the gaps between the connecting structure and the protective box 7, and finally completely sealing the cavity, effectively preventing leakage.

[0037] As a preferred embodiment, the power structure in this embodiment specifically includes: a terminal block 3, which is embedded in the outer wall of the box 1, with its two ends located on the inner and outer sides of the box 1, respectively, for connecting internal and external wires; an insulating sleeve 11, which is fitted around the outer periphery of the end of the terminal block 3 located on the inner side of the box 1, to provide preliminary insulation and mechanical protection; and a connecting wire harness 8, one end of which is fixedly connected to the end of the terminal block 3 located on the inner side of the box 1, and the other end of which passes through the protective box 7 and is wound and fixed with the internal connecting structure to achieve electrical connection.

[0038] As a supplement to the above, in this embodiment, the connection structure includes: a current association frame 9, with the two ends of the frame fixed to the two ends inside the protective box 7 respectively, and the association wire harness 8 passing through one end of the protective box 7 and wrapped and fixed to the outside of the frame of the current association frame 9 to form a stable and reliable electrical connection. In addition, it should be noted that in this technical solution, a screw hole is opened at the center of the bottom of the box 1, and the screw hole extends upward into the interior of the protective box 7. The protective box 7 is equipped with a positioning bolt 10 at the screw hole.

[0039] It should also be noted that in this technical solution, an observation window 6 is provided at the top center of the upper observation cover plate 5. The observation window 6 makes the internal structure visible, which is convenient for construction and maintenance. The bottom surface of the upper observation cover plate 5 is in contact with the top surface of the protective box 7 through the observation window 6, and together they form the above-mentioned annular sealing cavity, which ensures both sealing and visibility and operability.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A leakage-proof electrical construction junction box, characterized in that, include: The box (1) has several electrical structures installed at any two positions on its periphery; The protective box (7) is installed at the midpoint inside the box body (1), and the connection structure between any two electrical structures in different positions is fixed inside the protective box (7); The upper observation cover (5) is adapted to the opening at the top of the box body (1) and is used to assemble on the top of the box body (1); Several filling valve tubes (4) are evenly opened on the top of the upper observation cover plate (5) and aligned with the edge of the protective box (7), for sealing and insulating the connection structure inside the protective box (7) by filling the protective box (7) with insulating sealing material.

2. The leakage-proof electrical construction junction box according to claim 1, characterized in that: The top surface of the protective box (7) and the bottom surface of the upper observation cover (5) are in contact and form an annular sealing cavity for storing insulating sealing material; The annular sealing cavity is circular in shape. The inner wall of the annular sealing cavity maintains a uniform gap with the outer periphery of the connecting structure. The outer wall of the annular sealing cavity is integrally injection molded with the top edge of the protective box (7).

3. The leakage-proof electrical construction junction box according to claim 2, characterized in that: When the insulating sealing material is injected through the filling valve tube (4), the insulating sealing material flows along the gap of the annular sealing cavity and gradually fills all the gaps between the connecting structure and the protective box (7).

4. The leakage-proof electrical construction junction box according to claim 1, characterized in that: The power structure includes: The terminal block (3) is embedded in the outer wall of the box (1), with its two ends located on the inner and outer sides of the box (1) respectively; An insulating sleeve (11) is fitted onto the outer periphery of the end of the terminal block (3) located inside the box (1); The associated wire harness (8) is fixed at one end to the end of the terminal block (3) located inside the box (1), and the other end passes through the protective box (7) and is wound and connected to the connection structure.

5. The leakage-proof electrical construction junction box according to claim 4, characterized in that: The connection structure includes: The current association frame (9) has its two ends fixed inside the protective box (7). The association wire harness (8) passes through the protective box (7) and is wrapped around the outside of the legs of the current association frame (9).

6. The leakage-proof electrical construction junction box according to claim 1, characterized in that: The bottom center of the box (1) is provided with a screw hole, which extends into the protective box (7). The protective box (7) is equipped with a positioning bolt (10) in the screw hole.

7. The leakage-proof electrical construction junction box according to claim 2, characterized in that: An observation window (6) is provided at the midpoint of the top of the upper observation cover plate (5). The bottom surface of the upper observation cover plate (5) contacts the top surface of the protective box (7) through the observation window (6) to form the annular sealing cavity.

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