A waterproof cable joint structure of an electronic pod

Abstract

The utility model discloses a waterproof cable joint structure of electronic store, electronic store is equipped with internal thread hole for the outgoing line, waterproof cable joint structure includes first casing, second casing, fixed nut, waterproof plug and compression nut, first casing and second casing are all hollow structure, and the first end and the second end of first casing are equipped with outer thread respectively, and the internal thread hole of first casing first end is screwed with the electronic store, and the first sealing ring is established between first casing first end and electronic store, and the first end of second casing is inserted in the second end of first casing, and the second sealing ring is established between the first end of second casing and the second end of first casing, and the fixed nut is connected with the second end of first casing with thread, and the fixed nut is connected with second casing, and the second end of second casing is equipped with outer thread, and waterproof plug is covered in the cable outside in second casing, and waterproof plug is inserted in the second end of second casing, and compression nut is connected with the second end of second casing with thread.

Description

Technical Field

[0001] This utility model relates to the field of cable connector technology, and in particular to a waterproof cable connector structure for an electronic compartment. Background Technology

[0002] In fields such as marine engineering and deep-sea exploration, the waterproof performance of cable connectors directly determines the normal operation and service life of equipment. Currently, there are two main types of waterproof connector technologies in the industry: One method involves using epoxy resin potting technology to fill the gap between the wire and the sheath with epoxy resin and then cure it to prevent seawater from entering. However, this technology has significant drawbacks. On the one hand, epoxy resin potting requires skilled technicians to precisely mix the epoxy resin ratio, demanding a high level of expertise from the operators. On the other hand, it requires a series of specialized equipment, such as a constant-temperature curing chamber, epoxy resin dispensing machine, constant-temperature oven, and vacuum environment manufacturing machine, resulting in high equipment costs and strict limitations imposed by environmental conditions during production. More importantly, the cured epoxy resin, along with materials of varying hardness such as cables and sheaths, will undergo varying degrees of compression and shrinkage under the different water pressures of the deep sea. This can easily create cracks at the material joints, allowing seawater to seep into the internal space and compromise the waterproofing effect.

[0003] Secondly, a chemical plastic material that can bond with cables and metals is used, which is melted at high temperatures and then encapsulated and injection molded to achieve waterproofing. This technology also has drawbacks. It requires large-scale injection molding equipment and supporting production facilities, resulting in high investment costs and a large footprint. Furthermore, it urgently requires skilled personnel to operate the machinery, making the production process highly demanding. Additionally, the plastic layer after high-temperature injection molding is susceptible to interface separation or cracking with the cable and metal casing in the deep-sea environment due to temperature and water pressure variations, making it difficult to guarantee the reliability of the waterproofing.

[0004] Therefore, existing waterproof plug technology has shortcomings in terms of ease of production, equipment cost, personnel requirements, and waterproof stability, and cannot meet the requirements for waterproof performance and mass production of cable connectors in harsh environments such as deep sea. Utility Model Content

[0005] To address the aforementioned issues, this utility model provides a waterproof cable connector structure for an electronic compartment, offering an efficient, reliable, and low-cost waterproof solution for cable connections in harsh environments such as deep seas.

[0006] To address the problems mentioned in the background section and achieve the aforementioned technical objectives, this utility model provides the following technical solution: A waterproof cable connector structure for an electronic compartment includes an internally threaded hole for cable exit. The structure comprises a first housing, a second housing, a fixing nut, a waterproof plug, and a clamping nut. Both the first and second housings are hollow to allow cables to pass through. The first and second ends of the first housing are respectively provided with external threads. The first end of the first housing is threadedly connected to the internally threaded hole of the electronic compartment, and a first sealing ring is provided between the first end of the first housing and the electronic compartment. The first end of the second housing is inserted into the second end of the first housing, and a second sealing ring is provided between the first end of the second housing and the second end of the first housing. A snap-fit ​​portion is provided on the outer periphery of the second housing, and the fixing nut is threadedly connected to the second end of the first housing, engaging with the snap-fit ​​portion to achieve a fixed connection between the second housing and the first housing. The second end of the second housing is provided with external threads, and the waterproof plug is sleeved on the outside of the cable within the second housing and inserted into the second end of the second housing. The clamping nut is threadedly connected to the second end of the second housing to achieve a fixed connection between the waterproof plug and the second housing.

[0007] Furthermore, the first housing has a boss on its outer periphery, which is aligned with the end of the electronic compartment; the boss has a first mounting groove on the side facing the electronic compartment, and the first sealing ring is placed in the first mounting groove; when the first end of the first housing is connected to the electronic compartment, the end of the electronic compartment presses against the first sealing ring.

[0008] Furthermore, the outer periphery of the second housing is provided with a second mounting groove, and the second sealing ring is fitted into the second mounting groove.

[0009] Furthermore, there are two second sealing rings, and two second mounting grooves are provided on the outer periphery of the second housing.

[0010] Furthermore, the waterproof plug is made of rubber.

[0011] Furthermore, the waterproof plug has a trapezoidal cross-section, and the interior of the second end of the second housing is configured to fit the waterproof plug.

[0012] The beneficial effects of this utility model are as follows: The waterproof cable connector structure of the electronic compartment of this utility model adopts the principle of elastic sealing. The first sealing ring, the second sealing ring and the waterproof plug are all in a state of compression deformation after assembly, which can always maintain a tight fit with the mating parts. Even in the deep sea environment with different water pressure, the elastic sealing parts can adapt to the water pressure changes through their own deformation, avoiding cracks caused by material shrinkage differences. The waterproof stability is far superior to the existing technology and is suitable for long-term use in harsh environments such as the deep sea. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the waterproof cable connector structure and the electronic compartment of this utility model.

[0014] Figure 2 This is a cross-sectional view of the waterproof cable connector structure and the electronic compartment of this utility model.

[0015] Figure 3 This is an exploded structural diagram of the waterproof cable connector structure of this utility model.

[0016] Figure 4 This is another exploded structural diagram of the waterproof cable connector structure of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] like Figures 1 to 4 As shown, a waterproof cable connector structure for an electronic compartment 8 is provided. The electronic compartment 8 has an internal threaded hole for cable exit, through which the internal cable of the electronic compartment 8 passes. The waterproof cable connector structure is used to seal the internal threaded hole of the electronic compartment 8, and mainly includes a first housing 1, a second housing 2, a fixing nut 3, a waterproof plug 4, and a clamping nut 5. Both the first housing 1 and the second housing 2 are hollow structures to allow the cables exiting the electronic compartment 8 to pass through them.

[0019] The first housing 1 has external threads at its first and second ends respectively; its first end is threaded to the internal threaded hole of the electronic compartment 8 to achieve the docking of the waterproof cable connector structure with the electronic compartment 8; the external thread at its second end is used to mate with the fixing nut 3. A first sealing ring 6 is provided between the first end of the first housing 1 and the electronic compartment 8; when the first housing 1 is screwed into the internal threaded hole of the electronic compartment 8, the first sealing ring 6 undergoes elastic deformation under the compression of the two, effectively filling the connection gap and forming a reliable waterproof barrier to prevent moisture, dust and other impurities from intruding and affecting electrical performance.

[0020] The first end of the second housing 2 is inserted into the second end of the first housing 1, forming a nested fit between the housings. A second sealing ring 7 is provided between the first end of the second housing 2 and the second end of the first housing 1. A snap-fit ​​part 21 is provided on the outer periphery of the second housing 2. A fixing nut 3 is threadedly connected to the second end of the first housing 1, and the end of the fixing nut 3 forms a snap-fit ​​fit with the snap-fit ​​part 21. Through the tightening force of the threaded connection and the axial limiting effect of the snap-fit ​​fit, the second housing 2 and the first housing 1 are fixedly connected. At this time, the axial force of the fixing nut 3 makes the first housing 1 and the second housing 2 fit tightly together, and the second sealing ring 7 is squeezed and deformed, filling the gap between them and preventing seawater from seeping in from the fit between the first housing 1 and the second housing 2.

[0021] The second end of the second housing 2 is provided with an external thread. The waterproof plug 4 is sleeved on the outside of the cable in the second housing 2 and inserted into the second end of the second housing 2. The clamping nut 5 is threadedly connected to the second end of the second housing 2. By tightening the clamping nut 5, the clamping nut 5 generates axial pressure on the waterproof plug 4, fixing the waterproof plug 4 in the second housing 2 and realizing the fixed connection between the waterproof plug 4 and the second housing 2. The compression of the clamping nut 5 also causes the waterproof plug 4 to undergo elastic deformation, tightly wrapping the outer periphery of the cable and filling the gap between the waterproof plug 4 and the inner wall of the second end of the second housing 2, preventing seawater from seeping in from the mating point between the cable and the second housing 2, forming an all-round waterproof barrier at the cable outlet of the electronic compartment 8.

[0022] The waterproof cable connector structure of this embodiment adopts the principle of elastic sealing. The first sealing ring 6, the second sealing ring 7, and the waterproof plug 4 are all in a state of compression deformation after assembly, which can always maintain a tight fit with the mating parts. Even in the deep sea environment with different water pressures, the elastic sealing parts can adapt to water pressure changes through their own deformation, avoiding cracks caused by material shrinkage differences. The waterproof stability is far superior to existing technologies, making it suitable for long-term use in harsh environments such as the deep sea. It avoids the complex processes of epoxy resin potting and high-temperature injection molding of chemical plastics in existing technologies. All parts can be prefabricated in advance. The production process only requires assembling the prefabricated parts according to the assembly steps, without the need for skilled technicians, thus lowering the personnel threshold. It also eliminates the need for special equipment such as constant temperature curing chambers, epoxy resin potting machines, and large injection molding equipment, significantly reducing equipment investment costs. Furthermore, it is not limited by production environment conditions, making it easy to achieve mass production.

[0023] In some embodiments, a boss 11 is provided on the outer periphery of the first housing 1. The boss 11 is designed to correspond to the end of the electronic compartment 8. When the first end of the first housing 1 is threadedly connected to the electronic compartment 8, the side of the boss 11 facing the electronic compartment 8 can mate with the end of the electronic compartment 8. A first mounting groove 12 is provided on the side of the boss 11 facing the electronic compartment 8. The first sealing ring 6 is placed in the first mounting groove 12. The first mounting groove 12 positions and limits the first sealing ring 6, preventing it from shifting or falling off during assembly. When the first end of the first housing 1 is connected to the electronic compartment 8, the end of the electronic compartment 8 fits tightly with the boss 11, and the end of the electronic compartment 8 exerts a squeezing force on the first sealing ring 6 placed in the first mounting groove 12. Under squeezing, the first sealing ring 6 undergoes elastic deformation. Its deformation direction is limited by the first mounting groove 12 and can only extend towards the opening of the first mounting groove 12 and the mating gap between the first housing 1 and the electronic compartment 8, thereby fully filling all gaps between the first mounting groove 12, the first housing 1, and the end of the electronic compartment 8.

[0024] The first mounting groove 12 provides precise positioning for the first sealing ring 6, preventing displacement of the first sealing ring 6 during assembly and thus avoiding sealing failure. This improves assembly efficiency and accuracy, and reduces the error rate during assembly. The mating structure between the end of the electronic compartment 8 and the boss 11 ensures that the compression force of the electronic compartment 8 on the first sealing ring 6 is more uniform, guaranteeing that the first sealing ring 6 can fully and evenly fill the mating gap. This further enhances the waterproof sealing of the connection between the first housing 1 and the electronic compartment 8, effectively preventing seawater from seeping in through the mating gap.

[0025] In some embodiments, the outer periphery of the second housing 2 is provided with a recessed second mounting groove 22, and the second sealing ring 7 is fitted into the second mounting groove 22. The second mounting groove 22 can fix the second sealing ring 7, preventing the second sealing ring 7 from sliding or falling off during the insertion of the second housing 2 into the first housing 1. Under the limiting action of the second mounting groove 22 and the compression action of the inner wall of the first housing 1, the second sealing ring 7 undergoes elastic deformation, tightly fitting the inner wall of the first housing 1 and the groove wall of the second mounting groove 22. It can fully fill the mating gap between the first housing 1 and the second housing 2, forming an effective sealing barrier, further enhancing the waterproof performance of the entire joint structure, and preventing seawater from seeping in from the mating area between the first housing 1 and the second housing 2.

[0026] In some embodiments, two second sealing rings 7 are provided. Two second mounting grooves 22 are provided on the outer periphery of the second housing 2. The two second mounting grooves 22 have the same structure and dimensions and are evenly distributed along the axial direction of the second housing 2. A second sealing ring 7 is fitted into each second mounting groove 22, and the two second sealing rings 7 are respectively adapted to their corresponding second mounting grooves 22 to independently achieve a sealing function.

[0027] The design of double second sealing rings 7 and double second mounting grooves 22 forms a double sealing structure. Compared with single sealing ring sealing, this significantly improves the waterproof reliability and redundancy of the mating parts of the first housing 1 and the second housing 2, reducing the risk of overall waterproof function loss due to the failure of a single sealing ring. These two sealing barriers effectively slow down or even prevent the rate and amount of seawater infiltration, providing a more reliable guarantee for the long-term stable operation of the equipment, especially suitable for harsh environments with long-term high water pressure, such as the deep sea.

[0028] In some implementations, the waterproof plug 4 is made of rubber. Rubber has excellent elasticity and deformation capacity, providing a significantly better seal than rigid materials and accommodating fitting errors between cables of different sizes and the housing. Rubber also exhibits good resistance to seawater corrosion and aging, maintaining stable physical and sealing properties over long periods in deep-sea high-salt, high-pressure environments, thus extending the service life of the waterproof cable connector structure in the electronic compartment 8.

[0029] The overall structure of the waterproof plug 4 is adapted to the internal channel at the second end of the second housing 2 and the outer periphery of the cable. After the waterproof plug 4 is sleeved on the outside of the cable, it is inserted into the internal channel at the second end of the second housing 2 and connected to the second end of the second housing 2 by a clamping nut 5. The clamping nut 5 applies axial pressure to the rubber waterproof plug 4, causing the waterproof plug 4 to undergo elastic deformation, thereby fixing the waterproof plug 4. On the one hand, the inner wall of the waterproof plug 4 will tightly fit the outer peripheral surface of the cable, filling the tiny gap between the waterproof plug 4 and the cable; on the other hand, the outer peripheral wall of the waterproof plug 4 will tightly fit the inner wall at the second end of the second housing 2, filling the gap between the waterproof plug 4 and the second housing 2. Even in the deep sea environment, with changes in water pressure, the rubber waterproof plug 4 can adaptively adjust through its own elastic deformation, always maintaining a tight fit with the cable and the second housing 2, continuously blocking the infiltration path of seawater.

[0030] In one exemplary embodiment, the waterproof plug 4 has a trapezoidal cross-section, and the internal channel at the second end of the second housing 2 has a corresponding shape. The trapezoidal cross-section design allows the waterproof plug 4 to deform more uniformly in the radial direction when subjected to the axial pressure of the clamping nut 5. When the clamping nut 5 is tightened, the axial pressure acts on the end face of the trapezoidal waterproof plug 4. Due to the guiding effect of the trapezoidal structure, the radial deformation of the waterproof plug 4 is more controllable. Its inner wall tightly adheres to the outer periphery of the cable, and its outer wall tightly adheres to the inner wall of the second end of the second housing 2. Simultaneously, the trapezoidal structure enhances the friction between the waterproof plug 4 and the inner wall of the second housing 2, preventing the waterproof plug 4 from shifting under water pressure. In deep-sea environments, as water pressure changes, the rubber waterproof plug 4 can adaptively adjust its deformation degree through its own elasticity, always maintaining a tight fit with the cable and the second housing 2, continuously blocking the path of seawater infiltration.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waterproof cable connector structure for an electronic compartment (8), wherein the electronic compartment (8) has an internal threaded hole for cable outlet, characterized in that, The waterproof cable connector structure includes a first housing (1), a second housing (2), a fixing nut (3), a waterproof plug (4), and a clamping nut (5); both the first housing (1) and the second housing (2) are hollow structures for cable insertion; the first and second ends of the first housing (1) are respectively provided with external threads; the first end of the first housing (1) is threaded to the internal threaded hole of the electronic compartment (8), and a first sealing ring (6) is provided between the first end of the first housing (1) and the electronic compartment (8); the first end of the second housing (2) is inserted into the second end of the first housing (1), and a sealing ring (6) is provided between the first end of the second housing (2) and the second end of the first housing (1). There is a second sealing ring (7); the outer periphery of the second housing (2) is provided with a snap-fit ​​part (21), the fixing nut (3) is threadedly connected to the second end of the first housing (1), and the fixing nut (3) is snapped into the snap-fit ​​part (21) to realize the fixed connection between the second housing (2) and the first housing (1); the second end of the second housing (2) is provided with an external thread, the waterproof plug (4) is sleeved on the outside of the cable in the second housing (2), and the waterproof plug (4) is inserted into the second end of the second housing (2), the clamping nut (5) is threadedly connected to the second end of the second housing (2) to realize the fixed connection between the waterproof plug (4) and the second housing (2).

2. The waterproof cable connector structure for the electronic compartment according to claim 1, characterized in that, The first housing (1) has a boss (11) on its outer periphery, and the boss (11) is connected to the end of the electronic compartment (8); the boss (11) has a first mounting groove (12) on the side facing the electronic compartment (8), and the first sealing ring (6) is placed in the first mounting groove (12); when the first end of the first housing (1) is connected to the electronic compartment (8), the end of the electronic compartment (8) presses against the first sealing ring (6).

3. The waterproof cable connector structure for the electronic compartment according to claim 1, characterized in that, The second housing (2) has a second mounting groove (22) on its outer periphery, and the second sealing ring (7) is fitted in the second mounting groove (22).

4. The waterproof cable connector structure for the electronic compartment according to claim 3, characterized in that, Two second sealing rings (7) are provided, and two second mounting grooves (22) are provided on the outer periphery of the second housing (2).

5. The waterproof cable connector structure for the electronic compartment according to claim 1, characterized in that, The waterproof plug (4) is made of rubber.

6. The waterproof cable connector structure for the electronic compartment according to claim 1, characterized in that, The waterproof plug (4) has a trapezoidal cross-section, and the interior of the second end of the second housing (2) is designed to fit the shape of the waterproof plug (4).

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