Waterproof cable distribution box
By employing a combination design of a bottom housing rubber resin sealing gasket, inclined sides, and butyl rubber sheet in the cable junction box, along with a desiccant container and a multi-layer sealing structure, the problem of insufficient waterproofing in cable junction boxes is solved, achieving highly efficient waterproofing and moisture-proofing effects and extending the service life of the cable junction box.
Patent Information
- Application Number
- CN202422589652.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-25
AI Technical Summary
Existing cable junction boxes lack effective waterproofing measures, especially at the joints and cover, which are prone to water seepage. This increases the risk of cable dampness, corrosion, and short circuits, and affects stability and service life in harsh environments.
The design incorporates a combination of a bottom box rubber resin sealing gasket, inclined sides, and butyl rubber sheets, along with calcium chloride desiccant in the desiccant container, magnetic locking blocks, and silicone sealing strips to form a multi-layered waterproof and moisture-proof structure. The exterior is coated with a waterproof neoprene rubber coating and a metal waterproof coating.
It effectively prevents moisture from entering the cable junction box, keeps the inside dry, improves waterproof performance, extends the service life and stability of the cable junction box, and reduces the risk of cable dampness and corrosion.
Smart Images

Figure CN223502516U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of junction boxes, and more specifically, to a waterproof cable junction box. Background Technology
[0002] A cable junction box, also known as a cable branch box, is an important power distribution device used for branching and connecting cable lines in a power system. Chinese Utility Model Patent Application No. CN201420286348.7 proposes a cable junction box comprising a box body, a cover, a door, an inlet hole, and an outlet hole. The box body is equipped with a surge arrester and switching devices. Cable troughs are installed on both sides of the box body, and a support frame is installed at the bottom of the box body. The support frame has an external cuboid shape and an internal triangular shape. This utility model features a simple structure, convenient operation, low maintenance cost, and safe and reliable operation. By installing cable troughs inside the box, it effectively avoids the problem of numerous and messy wiring, and facilitates troubleshooting in case of an outgoing line fault. The external cuboid and internal triangular shape of the support frame improves the stability of the cable junction box during installation and use. The rainproof plate on the outside of the support frame effectively prevents rainwater from flowing into the support frame, extending the service life of the cable box.
[0003] However, existing cable junction boxes have some shortcomings that need improvement. Traditional cable junction box designs often lack effective waterproofing measures, especially at the joints of the box and the cover. These areas are prone to moisture penetration due to poor sealing, particularly in rainy outdoor environments. Once moisture enters the box, it significantly increases the risk of cable dampness, corrosion, and even short circuits. Even if some cable junction boxes use sealing strips or simple rubber gaskets to improve sealing, these measures are often insufficient to effectively absorb or expel internal moisture in the long term. In humid environments, the condensation and accumulation of moisture inside the box can damage the cable insulation, reducing cable lifespan and reliability. During long-term use, especially in harsh external environments, the bottom of the cable junction box may wear or deform due to friction and pressure, affecting overall stability and lifespan. Therefore, we have made improvements and proposed a waterproof cable junction box. Utility Model Content
[0004] The purpose of this utility model is to address the problems raised in the existing background technology. To achieve the above-mentioned purpose, this utility model provides the following technical solution: a waterproof cable junction box, comprising a cable junction box body, an inner layer plate on the inner side of the cable junction box body, a raised bottom box body at the lower part of the cable junction box body, a box cover at the upper part of the cable junction box body, a bottom rubber resin sealing gasket at the bottom of the raised bottom box body, an inclined side at the outer edge of the box cover, a butyl rubber sheet at the top of the box cover, and a desiccant container above the bottom rubber resin sealing gasket, the interior of the desiccant container containing calcium chloride desiccant.
[0005] As a preferred technical solution of this utility model, the cable junction box is connected to the triangular opening cover by a hinge, and a silicone sealing strip is provided at the gap between the cable junction box and the triangular opening cover.
[0006] As a preferred technical solution of this utility model, the triangular opening and closing cover is connected to the opening and closing cover slide rod, the opening and closing cover slide rod is provided with a slide rod long groove, the slide rod long groove is provided with a slide rod anchor rod, and the bottom of the opening and closing cover slide rod is provided with a fixing hook groove.
[0007] As a preferred technical solution of this utility model, an L-shaped inner folding plate is provided at the opening and closing point of the triangular opening and closing cover and the cable junction box. The L-shaped inner folding plate is integrated with the cable junction box and is located on the inner side of the cable junction box.
[0008] As a preferred technical solution of this utility model, a magnetic locking block is provided at the bottom of the triangular opening cover, and the magnetic locking block is made of permanent magnet material.
[0009] As a preferred technical solution of this utility model, a locking block receiving groove is provided at the upper edge of the raised bottom box, and the magnetic locking block cooperates with the locking block receiving groove.
[0010] As a preferred technical solution of this utility model, the outer side of the cable junction box and the inside of the inner layer plate are both coated with a waterproof neoprene rubber coating.
[0011] As a preferred technical solution of this utility model, the bottom of the rubber resin sealing gasket of the bottom box is provided with a metal waterproof coating steel plate.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In the solution of this utility model, by setting a bottom box rubber resin sealing gasket at the bottom of the raised box, setting an inclined side at the outer edge of the box cover and setting a butyl rubber sheet at the top, moisture is effectively prevented from entering the inside of the cable junction box, thus improving the waterproof performance.
[0013] A desiccant container is installed above the rubber resin sealing gasket of the bottom enclosure, containing calcium chloride desiccant. This effectively absorbs moisture within the cable junction box, keeping it dry and preventing cable damage from moisture. Both the outer exterior and the interior of the inner panels of the cable junction box are coated with a waterproof neoprene rubber coating, further enhancing its waterproof, moisture-proof, and corrosion-resistant properties. A waterproof-coated steel plate is installed at the bottom of the rubber resin sealing gasket, increasing its wear resistance and load-bearing capacity, thus extending the service life of the cable junction box. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the triangular opening and closing cover structure provided by this utility model;
[0016] Figure 3 A schematic diagram of the opening and closing cover slide bar structure provided by this utility model;
[0017] Figure 4 This is a schematic diagram of the sliding bar anchor structure provided by this utility model;
[0018] Figure 5 This is a schematic diagram of the main structure provided for this utility model;
[0019] Figure 6 A schematic diagram of the left-side structure provided by this utility model.
[0020] The image shows:
[0021] 1. Cable junction box; 101. Inner layer plate; 102. Raised bottom box; 1021. Bottom box rubber resin sealing gasket; 2. Box cover; 201. Inclined side; 202. Butyl rubber sheet; 3. Hinge; 4. Silicone sealing strip; 5. Triangular opening cover; 501. Opening cover slide rod; 502. Slide rod long groove; 503. Slide rod anchor rod; 504. Fixing hook groove; 6. L-shaped inner folding plate; 7. Magnetic locking block; 8. Locking block receiving groove; 9. Desiccant receiving box; 10. Calcium chloride desiccant. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0023] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of this utility model can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] Example 1: Please refer to Figures 1-6 A waterproof cable junction box includes a cable junction box body 1, an inner layer plate 101 on the inner side of the cable junction box body 1, a raised bottom box body 102 at the bottom of the cable junction box body 1, and a box cover 2 at the top of the cable junction box body 1. A bottom box body rubber resin sealing gasket 1021 is provided at the bottom of the raised bottom box body 102. An inclined side 201 is provided at the outer edge of the box cover 2, and a butyl rubber sheet 202 is provided on the top of the box cover 2. The waterproof working principle of the butyl rubber sheet 202 is as follows: In the cable junction box, the butyl rubber sheet 202 provides a waterproof seal. The dense molecular structure of the butyl rubber sheet 202 makes it difficult for gases and water vapor to penetrate. This low air permeability makes butyl rubber an ideal waterproof material. Butyl rubber has good elasticity and flexibility, and can adapt to contact surfaces of different shapes and sizes, filling gaps and preventing moisture from entering. Butyl rubber is resistant to a variety of chemicals and is not easily corroded, thus maintaining its waterproof properties when used outdoors or in humid environments. Butyl rubber retains its physical properties over a wide temperature range, maintaining its waterproof effect in both high and low temperature environments.
[0025] A desiccant container 9 is installed above the rubber resin sealing gasket 1021 of the bottom box, and calcium chloride desiccant 10 is placed inside the desiccant container 9. The cable junction box 1 is connected to the triangular opening cover 5 by a hinge 3, and a silicone sealing strip 4 is installed at the gap between the cable junction box 1 and the triangular opening cover 5. The triangular opening cover 5 is connected to the opening cover slide rod 501, which is provided with a slide rod long groove 502. A slide rod anchor rod 503 is installed in the slide rod long groove 502, and a fixing hook groove 504 is opened at the bottom of the opening cover slide rod 501. An L-shaped inner folding plate 6 is provided at the opening and closing point of the triangular opening cover 5 and the cable junction box 1. The L-shaped inner folding plate 6 is integrated with the cable junction box 1 and is located on the inner side of the cable junction box. A magnetic locking block 7 is provided at the bottom of the triangular opening cover 5. The magnetic locking block 7 is made of permanent magnet material. A locking block receiving groove 8 is provided at the upper edge of the raised base box 102, and a magnetic locking block 7 cooperates with the locking block receiving groove 8. The outer side of the cable distribution box 1 and the inside of the inner layer plate 101 are coated with a waterproof neoprene rubber coating. The bottom of the rubber resin sealing gasket 1021 of the base box is provided with a metal waterproof coated steel plate.
[0026] By setting a bottom rubber resin sealing gasket 1021 at the bottom of the raised bottom box 102, and setting an inclined side 201 at the outer edge of the box cover 2 and a butyl rubber sheet 202 at the top, moisture is effectively prevented from entering the cable junction box, thus improving the waterproof performance.
[0027] A desiccant container 9 is installed above the rubber resin sealing gasket 1021 in the bottom housing, and calcium chloride desiccant 10 is placed inside. This effectively absorbs moisture inside the cable junction box, keeping the interior dry and preventing cable damage from moisture. The drying principle of calcium chloride desiccant 10 is as follows: Calcium chloride can combine with water molecules to form hydrates. When moisture in the air comes into contact with calcium chloride, it quickly absorbs this moisture, thereby reducing the humidity of the surrounding environment. The hydrates formed after absorbing moisture by calcium chloride desiccant 10 are stable and do not easily release moisture, thus maintaining a dry state for a long time.
[0028] The cable junction box 1 and the triangular hinged cover 5 are connected by a hinge 3, and a silicone sealing strip 4 is installed at the gap to ensure the sealing and stability of the connection. Simultaneously, the triangular hinged cover 5 is connected to the cover slide rod 501, with a slide rod anchor 503 installed in the slide rod's long groove 502 and a fixing hook groove 504 at the bottom of the slide rod, further improving the overall structural stability and reliability. An L-shaped inner folding plate 6 is provided at the opening and closing point of the triangular hinged cover 5 and the cable junction box 1, integrated with the cable junction box 1 and located on the inside, effectively improving sealing. A magnetic locking block 7 made of permanent magnet material is provided at the bottom of the triangular hinged cover 5, which cooperates with the locking block receiving groove 8 at the upper edge of the raised base box 102 to achieve quick locking and unlocking, improving safety during use.
[0029] The outer side of the cable junction box 1 and the inside of the inner layer plate 101 are coated with a waterproof neoprene rubber coating, which further improves the waterproof, moisture-proof and corrosion-resistant performance of the cable junction box. The bottom of the bottom box rubber resin sealing gasket 1021 is provided with a metal waterproof coated steel plate, which increases the wear resistance and load-bearing capacity of the bottom and improves the service life of the cable junction box.
[0030] The bottom of the raised box body 102 is equipped with a bottom box body rubber resin sealing gasket 1021, which forms a waterproof seal when in contact with the ground. The outer edge of the box cover 2 is provided with an inclined side 201 to prevent water from directly entering the gap between the box cover 2 and the box body. The butyl rubber sheet 202 on the top of the box cover 2 provides an additional waterproof layer.
[0031] The rubber resin sealing gasket 1021 on the bottom of the enclosure and the butyl rubber sheet 202 on the cover 2 are both high-quality waterproof materials that can effectively prevent moisture penetration. In addition, a silicone sealing strip 4 is provided at the gap between the cable distribution box 1 and the triangular opening cover 5, providing double protection.
[0032] A desiccant container 9 is installed above the rubber resin sealing gasket 1021 in the bottom housing, containing calcium chloride desiccant 10. This desiccant can absorb moisture inside the cable junction box, keeping the interior dry and thus preventing the cables from being damaged by moisture.
[0033] In use, the cables are first arranged and secured within the cable junction box 1 as required. Then, the triangular opening cover 5 is connected to the cable junction box 1 via hinge 3. A quick locking mechanism is achieved by engaging the magnetic locking block 7 on the triangular opening cover 5 with the locking block receiving groove 8 at the upper edge of the raised base box 102. The magnetic locking block 7, made of permanent magnet material, provides sufficient locking force to ensure the cable junction box remains sealed during use. A waterproof neoprene rubber coating is applied to both the outer side of the cable junction box 1 and the inside of the inner layer plate 101 to further improve the waterproof performance of the cable junction box. A metal waterproof-coated steel plate is installed at the bottom of the rubber resin sealing gasket 1021 of the base box, increasing the bottom's wear resistance and load-bearing capacity, while also providing an additional waterproof layer. When connecting or disconnecting cables, first open the magnetic locking block 7 and lift the triangular opening cover 5. After connecting the cables and completing the cable connection, return the triangular opening cover 5 to its original position and lock it using the magnetic locking block 7. Throughout the entire process, the waterproof design of the cable junction box 1 ensures that the internal cables are not corroded by moisture, while the calcium chloride desiccant 10 in the desiccant container 9 continuously absorbs internal moisture and maintains a dry environment.
[0034] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.
Claims
1. A waterproof cable junction box, comprising a cable junction box body (1), wherein an inner layer plate (101) is provided on the inner side of the cable junction box body (1), a raised bottom box body (102) is provided at the lower part of the cable junction box body (1), and a box cover (2) is provided at the upper part of the cable junction box body (1), characterized in that, The bottom of the raised box (102) is provided with a bottom box rubber resin sealing gasket (1021), the outer edge of the box cover (2) is provided with an inclined side (201), the top of the box cover (2) is provided with a butyl rubber sheet (202), and a desiccant container (9) is provided above the bottom box rubber resin sealing gasket (1021). The desiccant container (9) is provided with calcium chloride desiccant (10) inside. The cable junction box (1) is connected to the triangular opening cover (5) by a hinge (3), and a silicone sealing strip (4) is provided at the gap between the cable junction box (1) and the triangular opening cover (5). The triangular opening and closing cover (5) is connected to the opening and closing cover slide rod (501). The opening and closing cover slide rod (501) is provided with a slide rod long groove (502). The slide rod long groove (502) is provided with a slide rod anchor rod (503). The bottom of the opening and closing cover slide rod (501) is provided with a fixing hook groove (504). The triangular opening cover (5) and the cable junction box (1) are provided with an L-shaped inner folding plate (6). The L-shaped inner folding plate (6) is integrated with the cable junction box (1) and is located on the inner side of the cable junction box. The bottom of the triangular opening cover (5) is provided with a magnetic locking block (7). The magnetic locking block (7) is made of permanent magnet material.
2. The waterproof cable junction box according to claim 1, characterized in that, The upper edge of the raised base box (102) is provided with a locking block receiving groove (8), and the magnetic locking block (7) cooperates with the locking block receiving groove (8).
3. A waterproof cable junction box according to claim 2, characterized in that, The outer side of the cable junction box (1) and the inside of the inner layer plate (101) are both coated with a waterproof neoprene rubber coating.
4. A waterproof cable junction box according to claim 3, characterized in that, The bottom of the bottom box rubber resin sealing gasket (1021) is provided with a metal waterproof coating steel plate.
Citation Information
Patent Citations
Cable branch box
CN204012535U