A waterproof junction box for marine cables

Abstract

This utility model discloses a waterproof junction box for marine cables, relating to the field of marine electrical equipment. It includes a junction box body, a sealing cover installed at the top of the junction box body, and threaded sealing plugs installed on the outside of the junction box body. Three sets of threaded sealing plugs are threadedly connected to the outside of the junction box body. The threaded sealing plugs are detachable. This utility model has the following advantages: 1. Excellent waterproof performance: The junction box achieves multiple seals by setting rubber sealing rings at the plastic connector and cable socket, and waterproof rubber rings between the sealing cover and the junction box body, effectively preventing moisture from entering the junction box from the cable socket and the gaps in the cover; 2. Reliable sealing structure: The rubber sealing rings, waterproof rubber rings, and other sealing components are made of high-quality materials, possessing good elasticity, aging resistance, and corrosion resistance. They can maintain stable sealing performance during long-term use, reducing the risk of water ingress due to aging of the sealing components.

Description

Technical Field

[0001] This utility model relates to the field of marine electrical equipment, specifically a waterproof junction box for marine cables. Background Technology

[0002] During ship operation, cables serve as a key carrier for power transmission and signal transmission, and the waterproof performance of their connection points is crucial. Ships are in the marine environment for a long time and face multiple challenges such as seawater erosion, humid air, wave impact, and hull vibration.

[0003] Traditional marine cable junction boxes have some drawbacks. On the one hand, the sealing design of some junction boxes is not perfect. When the cable sockets are not in use, there is a lack of effective waterproofing measures, which allows seawater or humid air to easily enter the junction box from the unused sockets, causing cable short circuits, insulation damage and other faults, seriously threatening the safety of the ship's electrical system. On the other hand, the sealing structure of some junction boxes is prone to aging and deformation after long-term use, resulting in a decline in sealing performance and an inability to continuously and effectively prevent moisture from entering.

[0004] Therefore, developing a waterproof junction box for marine cables that has good waterproof performance, reliable structure, and is easy to install and maintain is of great practical significance. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof junction box for marine cables, comprising a junction box body, a sealing cover installed on the top of the junction box body, and threaded sealing plugs installed on the outside of the junction box body. The threaded sealing plugs are provided in three sets and are respectively threaded to the outside of the junction box body. The threaded sealing plugs are designed to be detachable.

[0006] Preferably, the junction box includes a main body, and a cable socket is provided on one side of the main body. There are three sets of cable sockets, which are respectively located on both sides and the front end of the main body. A plastic connector is fixedly connected in each set of cable sockets. A rubber sealing ring is fitted at the connection between the plastic connector and the cable socket. A threaded groove is provided on the inner wall of the plastic connector corresponding to the threaded sealing plug.

[0007] Preferably, a limiting structure is installed in the cable sockets on both sides of the main body of the box, and there are two sets of the limiting structure.

[0008] Preferably, the limiting structure includes a soft rubber washer, and a hard rubber block is fixedly connected to one side of the soft rubber washer. The hard rubber block has two sets of symmetrically fixed to both sides of the soft rubber washer, and each set of hard rubber blocks is threaded with a hexagonal bolt.

[0009] Preferably, the limiting structure is combined with the box body by tightening two sets of hexagonal bolts on the inside of the box body.

[0010] Preferably, the sealing cover includes a plastic cover and a waterproof rubber ring. The waterproof rubber ring is located below the plastic cover and covers the top of the main body of the box. Threaded holes are provided on both sides of the top of the main body of the box, the plastic cover, and the waterproof rubber ring. A cross bolt is threaded into each set of threaded holes. The sealing cover and the junction box are assembled by tightening the cross bolts into the threaded holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model proposes a waterproof junction box for marine cables, which has the following advantages: 1. Excellent waterproof performance: The junction box achieves multiple seals by setting rubber sealing rings at the plastic connector and cable socket, and waterproof rubber rings between the sealing cover and the junction box body. This effectively prevents moisture from entering the junction box from the gaps between the cable socket and the cover. The threaded sealing plug design allows for installation when the cable socket is not in use, providing reliable waterproof protection for the unused socket and further improving the overall waterproof performance of the junction box. 2. Reliable sealing structure: The rubber sealing ring, waterproof rubber ring, and other sealing components are made of high-quality materials with good elasticity, aging resistance, and corrosion resistance. They maintain stable sealing performance during long-term use, reducing the risk of water ingress due to aging of sealing components. The threaded connection between the threaded sealing plug and the inner wall of the plastic connector ensures a tight and reliable seal, preventing loosening or detachment. 3. Easy installation and maintenance: The sealing cover is connected to the junction box body by cross bolts, resulting in a simple structure and convenient operation, facilitating the inspection and maintenance of the cables inside the junction box. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 Disassembly diagram;

[0016] Figure 3 For the present utility model Figure 2 A detailed schematic diagram of a part of the image.

[0017] As shown in the figure: 1. Junction box body; 11. Box body; 12. Plastic connector; 13. Rubber sealing ring; 14. Limiting structure; 141. Soft rubber gasket; 142. Hard rubber block; 143. Hex bolt; 2. Sealing cover; 21. Plastic cover; 22. Waterproof rubber ring; 23. Cross bolt; 3. Threaded sealing plug. Detailed Implementation

[0018] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0019] Please see Figures 1 to 3 This utility model provides a waterproof junction box for marine cables, including a junction box body 1, a sealing cover 2 installed on the top of the junction box body 1, and a threaded sealing plug 3 installed on the outside of the junction box body 1. The threaded sealing plug 3 is provided in three sets and is threadedly connected to the outside of the junction box body 1. The threaded sealing plug 3 is designed to be detachable.

[0020] It has the following advantages: 1. Excellent waterproof performance: The junction box achieves multiple seals by setting a rubber sealing ring 13 at the connection between the plastic connector 12 and the cable socket, and a waterproof rubber ring 22 between the sealing cover 2 and the junction box body 1. This effectively prevents moisture from entering the junction box from the gaps between the cable socket and the cover. The threaded sealing plug 3 can be installed when the cable socket is not in use, providing reliable waterproof protection for the unused socket and further improving the overall waterproof performance of the junction box. 2. Reliable sealing structure: The sealing components, such as the rubber sealing ring 13 and the waterproof rubber ring 22, are made of high-quality materials with good elasticity, aging resistance, and corrosion resistance. They maintain stable sealing performance during long-term use, reducing the risk of water ingress due to aging of the sealing components. The threaded connection between the threaded sealing plug 3 and the inner wall of the plastic connector 12 ensures a tight and reliable seal, preventing loosening or detachment. 3. Easy installation and maintenance: The sealing cover 2 is connected to the junction box body 1 by a cross bolt 23. The structure is simple and easy to operate, facilitating the inspection and maintenance of the cables inside the junction box.

[0021] The junction box 1 includes a main body 11. A cable socket is provided on one side of the main body 11. There are three sets of cable sockets, which are respectively located on both sides and the front end of the main body 11. A plastic connector 12 is fixedly connected to each set of cable sockets. A rubber sealing ring 13 is fitted at the connection between the plastic connector 12 and the cable socket. A threaded groove is provided on the inner wall of the plastic connector 12 corresponding to the threaded sealing plug 3.

[0022] Limiting structures 14 are installed in the cable sockets on both sides of the main body 11 of the box. There are two sets of limiting structures 14.

[0023] The limiting structure 14 includes a soft rubber washer 141, a hard rubber block 142 fixedly connected to one side of the soft rubber washer 141, and two sets of hard rubber blocks 142 are symmetrically fixed on both sides of the soft rubber washer 141. Each set of hard rubber blocks 142 is threaded with a hexagonal bolt 143.

[0024] The limiting structure 14 is tightened to the inside of the box body 11 by two sets of hexagonal bolts 143 to achieve the combination with the box body 11;

[0025] The sealing cover 2 includes a plastic cover 21 and a waterproof rubber ring 22. The waterproof rubber ring 22 is located below the plastic cover 21 and covers the top of the main body 11 of the box. Threaded holes are provided on both sides of the top of the main body 11 of the box, the plastic cover 21 and the waterproof rubber ring 22. A cross bolt 23 is threaded into each set of threaded holes. The sealing cover 2 and the junction box 1 are assembled and installed by tightening the cross bolt 23 into the threaded holes.

[0026] When using it, unscrew the two sets of cross bolts 23, remove the plastic cover 21 and waterproof rubber ring 22, and then insert the cables that need to be wired into different cable sockets, pass through the plastic connector 12 and the soft rubber washer 141 of the limiting structure 14, and enter the junction box 1 for connection.

[0027] For unused cable sockets, align the threaded sealing plug 3 with the threaded groove on the inner wall of the plastic connector 12, and rotate the threaded sealing plug 3 to ensure it is tightly installed inside the plastic connector 12 and a good seal is achieved.

[0028] Next, reinstall the sealing cover 2, place the waterproof rubber ring 22 on the top of the box body 11, and then put the plastic cover 21 on the waterproof rubber ring 22, aligning the threaded holes. Use the cross bolt 23 to tighten the plastic cover 21 to the box body 11 to complete the installation of the sealing cover 2.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0031] The contents not described in detail in this specification do not improve upon this application and are all prior art known to those skilled in the art, and therefore are not described in detail.

Claims

1. A waterproof junction box for marine cables, characterized in that: Includes a junction box body (1), a sealing cover (2) is installed on the top of the junction box body (1), and a threaded sealing plug (3) is installed on the outside of the junction box body (1). The threaded sealing plug (3) has three sets and is threadedly connected to the outside of the junction box body (1). The threaded sealing plug (3) is designed to be detachable. The junction box body (1) includes a main body (11). A cable socket is provided on one side of the main body (11). There are three sets of cable sockets. The three sets of cable sockets are respectively provided on both sides and the front end of the main body (11). A plastic connector (12) is fixedly connected in each set of cable sockets. A rubber sealing ring (13) is provided at the connection between the plastic connector (12) and the cable socket. A threaded groove is provided on the inner wall of the plastic connector (12) corresponding to the threaded sealing plug (3). Limiting structures (14) are installed in the cable sockets on both sides of the main body (11) of the box. There are two sets of limiting structures (14). The limiting structure (14) includes a soft rubber washer (141), and a hard rubber block (142) is fixedly connected to one side of the soft rubber washer (141). The hard rubber block (142) has two sets of symmetrical fixed on both sides of the soft rubber washer (141), and each set of hard rubber blocks (142) is threaded with a hexagonal bolt (143).

2. A marine cable gland according to claim 1, characterised in that: The limiting structure (14) is tightened to the inside of the box body (11) by two sets of hexagonal bolts (143) to achieve the combination with the box body (11).

3. A marine cable gland according to claim 2, characterised in that: The sealing cover (2) includes a plastic cover (21) and a waterproof rubber ring (22). The waterproof rubber ring (22) is located below the plastic cover (21) and covers the top of the box body (11). The box body (11), the plastic cover (21) and the waterproof rubber ring (22) are provided with threaded holes on both sides of the top of the box body (11), the plastic cover (21) and the waterproof rubber ring (22). Each set of threaded holes is threaded with a cross bolt (23). The sealing cover (2) and the junction box (1) are assembled and installed by tightening the cross bolt (23) in the threaded hole.

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