Cable waterproof flame-retardant intermediate joint protective shell

Abstract

The utility model discloses a cable waterproof flame-retardant intermediate joint protection shell, which comprises a second shell body, the outer wall of the second shell body is symmetrically and fixedly connected with connecting lock catches, the cable waterproof flame-retardant intermediate joint protection shell further comprises a first shell body, and the outer wall of the first shell body is fixedly connected with the outer wall of one side, far away from the second shell body, of each connecting lock catch; the utility model relates to the technical field of joint protective shells, according to the first shell and the second shell, through the cooperation of the filling port and the exhaust port, the filling port facilitates the injection of resin AB glue, and when a rubber plug is pulled out to fill the glue, a rubber belt can drive a sealing plug to be separated from the exhaust port and open the exhaust port, so that air in the protective shell can be smoothly exhausted; the inner space of the protective shell can be fully filled with the resin AB glue, the second shell is connected with the first shell through the connecting lock catch, a complete protective shell structure can be rapidly formed, meanwhile, a first mounting hole in the first connecting plate corresponds to a second mounting hole in the second connecting plate, and the connecting tightness is further enhanced through screwing of a screw.

Description

Technical Field

[0001] This utility model relates to the field of joint protection shell technology, specifically a waterproof and flame-retardant intermediate joint protection shell for cables. Background Technology

[0002] In modern power transmission systems, cables are crucial carriers of electrical energy, and their safe and stable operation is of paramount importance. Cable joints, as weak links in cable lines, are highly susceptible to external environmental factors such as moisture intrusion, mechanical impact, and fire threats, which can lead to electrical faults. Traditional cable joint protective shells have significant defects in terms of waterproof performance.

[0003] Most protective enclosures rely on simple snap-fit ​​connections, which are insufficient to effectively prevent moisture from seeping in from the enclosure joints and cable entry points. Long-term moisture erosion can reduce the insulation performance of cable joints and cause serious problems such as short circuits. At the same time, the snap-fit ​​connection structure of traditional protective enclosures is often not strong enough and is prone to loosening when subjected to external impact or long-term vibration, thus failing to provide reliable physical protection for cable joints. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof and flame-retardant cable intermediate joint protective shell, which solves the problem that the snap-fit ​​connection structure of traditional protective shells is not strong enough and does not seal properly.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A waterproof and flame-retardant cable joint protective shell includes: a second shell, the outer wall of which is symmetrically and fixedly connected with connecting latches; and a first shell, the outer wall of which is fixedly connected to the outer wall of the connecting latches on the side away from the second shell. The first and second shells are made of PP flame-retardant material. The outer wall of the top of the first shell has an injection port for injecting resin AB glue. The outer wall of the top of the first shell has symmetrically opened vent ports. A rubber plug is slidably connected to the inner wall of the injection port. A rubber strip is symmetrically and fixedly connected to the outer wall of the rubber plug. A sealing plug is fixedly connected to the outer wall of the rubber strip on the side away from the rubber plug. A first sealing ring is symmetrically and fixedly connected to the inner wall of the first shell.

[0009] Preferably, the outer wall of the sealing plug is slidably connected to the inner wall of the vent. When the rubber plug on the filling port is opened, the rubber band will stretch when the rubber plug is pulled out of the filling glue, causing the sealing plug to disengage from the vent and opening the vent. The first sealing ring is disposed at both ends of the first housing.

[0010] Preferably, a first connecting plate is symmetrically fixedly connected to the outer wall of the first housing, and a first mounting hole is provided on the outer wall of the first connecting plate.

[0011] Preferably, a sealing gasket is fixedly connected to the outer wall of the top of the second housing, a second sealing ring is symmetrically fixedly connected to the inner wall of the second housing, a second connecting plate is symmetrically fixedly connected to the outer wall of the second housing, and a second mounting hole is provided on the outer wall of the second connecting plate.

[0012] Preferably, the second mounting holes are arranged laterally along the outer wall of the second connecting plate, and the second sealing rings are disposed at both ends of the second housing. When the first housing and the second housing are closed, the first sealing ring and the second sealing ring can fit tightly against the outer wall of the cable, preventing moisture from entering the interior of the protective housing along the outer wall of the cable, thus achieving a good sealing and waterproofing effect.

[0013] Preferably, the first mounting hole corresponds to the second mounting hole, and screws are slidably connected to the inner walls of the first mounting hole and the second mounting hole. The outer wall of the bottom of the first housing contacts the outer wall of the top of the sealing gasket. By inserting screws into these mounting holes and tightening them, the connection between the first housing and the second housing is further strengthened, ensuring the overall stability of the protective shell.

[0014] (III) Beneficial Effects

[0015] This utility model provides a waterproof and flame-retardant protective shell for cable intermediate joints. It has the following beneficial effects:

[0016] (I) The first housing, through the cooperation of the injection port and the vent port, makes the injection process of resin AB glue efficient and smooth. The injection port facilitates the injection of resin AB glue. During injection, through the ingenious connection of the rubber plug and the rubber band, when the rubber plug is pulled out to inject glue, the rubber band drives the sealing plug to detach from the vent port, automatically opening the vent channel so that the air inside the protective housing can be smoothly discharged. This ensures that the resin AB glue can fully fill the internal space of the protective housing and evenly wrap the cable intermediate joint. When the injection is completed, the sealing plug and the rubber plug can be easily reset to prevent air from entering again, ensuring that the waterproof and insulation effects are not affected. The operation is simple and convenient, improving the construction efficiency.

[0017] (ii) The second housing is connected to the first housing by a connecting latch, which is easy to operate and has a firm connection. It can quickly form a complete protective housing structure. At the same time, the first mounting hole on the first connecting plate corresponds to the second mounting hole on the second connecting plate. The connection is further strengthened by tightening the screws, ensuring that the protective housing can maintain overall stability under various working conditions. It effectively avoids the protective housing from loosening due to external impact or vibration, and provides reliable physical protection for the cable intermediate joint. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connecting latch of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first housing of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the second shell of this utility model.

[0022] In the figure: 1. First housing; 11. Filling port; 12. Vent port; 13. Rubber plug; 14. Rubber strip; 15. Sealing plug; 16. First connecting plate; 17. First mounting hole; 18. First sealing ring; 2. Second housing; 21. Sealing gasket; 22. Second sealing ring; 23. Second connecting plate; 24. Second mounting hole; 25. Connecting latch. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a waterproof and flame-retardant intermediate joint protective shell for cables, comprising: a second shell 2, the outer wall of the second shell 2 being symmetrically and fixedly connected with connecting latches 25, and further comprising: a first shell 1, the outer wall of the first shell 1 being fixedly connected to the outer wall of the connecting latches 25 on the side away from the second shell 2, the first shell 1 and the second shell 2 being made of PP flame-retardant material; an injection port 11 is provided on the outer wall of the top of the first shell 1 for injection of resin AB glue, an exhaust port 12 is symmetrically provided on the outer wall of the top of the first shell 1, a rubber plug 13 is slidably connected to the inner wall of the injection port 11, a rubber band 14 is symmetrically and fixedly connected to the outer wall of the rubber plug 13, a sealing plug 15 is fixedly connected to the outer wall of the rubber band 14 on the side away from the rubber plug 13, and a first sealing ring 18 is symmetrically and fixedly connected to the inner wall of the first shell 1.

[0025] The outer wall of the sealing plug 15 is slidably connected to the inner wall of the vent 12. The rubber plug 13 on the filling port 11 is opened. At the same time, when the rubber plug 13 is pulled out of the filling glue, the rubber band 14 will be stretched, which will drive the sealing plug 15 to disengage from the vent 12 and open the vent 12. The first sealing ring 18 is set at both ends of the first housing 1.

[0026] The outer wall of the first housing 1 is symmetrically fixedly connected with a first connecting plate 16, and the outer wall of the first connecting plate 16 is provided with a first mounting hole 17.

[0027] A sealing gasket 21 is fixedly connected to the outer wall of the top of the second housing 2. A second sealing ring 22 is symmetrically fixedly connected to the inner wall of the second housing 2. A second connecting plate 23 is symmetrically fixedly connected to the outer wall of the second housing 2. A second mounting hole 24 is opened on the outer wall of the second connecting plate 23.

[0028] The second mounting holes 24 are arranged laterally along the outer wall of the second connecting plate 23, and the second sealing rings 22 are located at both ends of the second housing 2. When the first housing 1 and the second housing 2 are closed, the first sealing ring 18 and the second sealing ring 22 can fit tightly against the outer wall of the cable, preventing moisture from entering the interior of the protective shell along the outer wall of the cable, thus achieving a good sealing and waterproofing effect.

[0029] The first mounting hole 17 corresponds to the second mounting hole 24. Screws are slidably connected to the inner walls of the first mounting hole 17 and the second mounting hole 24. The outer wall of the bottom of the first housing 1 contacts the outer wall of the top of the sealing gasket 21. By inserting screws into these mounting holes and tightening them, the connection between the first housing 1 and the second housing 2 is further strengthened, ensuring the overall stability of the protective shell.

[0030] In use, the first housing 1 and the second housing 2 are connected together by the connecting latch 25 to form a complete protective housing structure. Resin AB glue is injected into the protective housing through the injection port 11 on the first housing 1 to serve as waterproofing, insulation and fixing of cable joints.

[0031] First, the cable connector is placed between the first housing 1 and the second housing 2. The first housing 1 and the second housing 2 rotate relative to each other through the connecting latch 25, so that the outer wall of the bottom of the first housing 1 comes into contact with the sealing gasket 21 on the outer wall of the top of the second housing 2, which plays a preliminary sealing role and prevents external moisture from entering the protective shell. The first sealing ring 18 on the inner wall of the first housing 1 and the second sealing ring 22 on the inner wall of the second housing 2 are respectively set at both ends of the first housing 1 and the second housing 2. When the first housing 1 and the second housing 2 are closed, the first sealing ring 18 and the second sealing ring 22 can fit tightly against the outer wall of the cable, preventing moisture from entering the protective shell along the outer wall of the cable, thus achieving a good sealing and waterproof effect.

[0032] The first mounting hole 17 on the first connecting plate 16 on the outer wall of the first housing 1 corresponds to the second mounting hole 24 on the second connecting plate 23 on the outer wall of the second housing 2. By inserting screws into these mounting holes and tightening them, the connection between the first housing 1 and the second housing 2 is further strengthened, ensuring the overall stability of the protective shell.

[0033] After the cable intermediate joint is placed in the appropriate position inside the protective shell, open the rubber plug 13 on the injection port 11. At the same time, when the rubber plug 13 is pulled out of the injection port, the rubber band 14 will stretch, causing the sealing plug 15 to disengage from the vent port 12, opening the vent port 12. Then, resin AB glue is injected into the protective shell through the injection port 11. During the injection process, the resin AB glue will gradually fill the internal space of the protective shell, wrapping the cable intermediate joint and playing the roles of waterproofing, insulation and fixing the cable joint. During the injection of resin AB glue, air is discharged from the protective shell through the vent port 12. As the resin AB glue is continuously injected, when the air is basically expelled and the resin AB glue is almost full, reinsert the sealing plug 15 into the vent port 12, and push the rubber plug 13 back into the injection port 11 to complete the injection and venting operation, preventing air from re-entering the protective shell and affecting the waterproofing and insulation effect.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] 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 claims and their equivalents.

Claims

1. A waterproof and flame-retardant protective shell for cable intermediate joints, comprising: The second housing (2) has a connecting latch (25) symmetrically fixedly connected to its outer wall. The second housing (2) is characterized in that it further includes: a first housing (1) whose outer wall is fixedly connected to the outer wall of the connecting latch (25) on the side away from the second housing (2). The top outer wall of the first housing (1) is provided with an injection port (11), and the top outer wall of the first housing (1) is provided with symmetrical exhaust ports (12). The inner wall of the injection port (11) is slidably connected with a rubber plug (13). The outer wall of the rubber plug (13) is symmetrically fixedly connected with a rubber band (14). The outer wall of the rubber band (14) away from the rubber plug (13) is fixedly connected with a sealing plug (15). The inner wall of the first housing (1) is symmetrically fixedly connected with a first sealing ring (18).

2. The cable waterproof and flame-retardant intermediate joint protective shell according to claim 1, characterized in that: The outer wall of the sealing plug (15) is slidably connected to the inner wall of the exhaust port (12), and the first sealing ring (18) is disposed at both ends of the first housing (1).

3. The cable waterproof and flame-retardant intermediate joint protective shell according to claim 1, characterized in that: The outer wall of the first housing (1) is symmetrically fixedly connected with a first connecting plate (16), and the outer wall of the first connecting plate (16) is provided with a first mounting hole (17).

4. The cable waterproof and flame-retardant intermediate joint protective shell according to claim 1, characterized in that: A sealing gasket (21) is fixedly connected to the outer wall of the top of the second housing (2), a second sealing ring (22) is symmetrically fixedly connected to the inner wall of the second housing (2), a second connecting plate (23) is symmetrically fixedly connected to the outer wall of the second housing (2), and a second mounting hole (24) is opened on the outer wall of the second connecting plate (23).

5. A waterproof and flame-retardant intermediate joint protective shell for cables according to claim 4, characterized in that: The second mounting hole (24) is arranged laterally along the outer wall of the second connecting plate (23), and the second sealing ring (22) is disposed at both ends of the second housing (2).

6. The cable waterproof and flame-retardant intermediate joint protective shell according to claim 3, characterized in that: The first mounting hole (17) corresponds to the second mounting hole (24), and the outer wall of the bottom of the first housing (1) is in contact with the outer wall of the top of the sealing gasket (21).

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