Sealing waterproof wire rod of electric connector

Abstract

The utility model discloses a sealing waterproof wire rod of an electric connector, which relates to the technical field of waterproof wire rods and comprises an insulating wrapping layer, a metal supporting net is arranged on the inner wall of the insulating wrapping layer, a puncturing assembly is fixedly connected to the inner wall of the metal supporting net and comprises a supporting part, and the end part of the supporting part is integrally connected with a puncturing part. The supporting part penetrates through the interior of the polyester fiber buffer layer, the supplementary sealing layer comprises a polyurea microcapsule shell, the interior of the polyurea microcapsule shell is filled with a filling agent, an inner puncture block is suspended in the filling agent, and the inner puncture block is in a triangular pyramid shape. And meanwhile, the microcapsules wrapped with the filling agent are added, when the hot melt adhesive is stressed and cracks occur, the microcapsules can be broken, and the cracks generated in the hot melt adhesive are repaired and blocked by using the filling agent, so that the sealing performance of the wire is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of waterproof wire technology, specifically a sealing and waterproof wire for electrical connectors. Background Technology

[0002] Electrical connector wires typically contain metallic conductors, such as copper wires. If moisture enters the wire, it can degrade the insulation between the metallic conductors. For example, in humid environments, water acts as an electrolyte, creating a conductive path between normally insulated wires, leading to a short circuit. A short circuit can generate a large current instantaneously, damaging connected electronic equipment, such as burning out components on circuit boards or blowing fuses. Therefore, the waterproof sealing performance of electrical connector wires is crucial.

[0003] In Chinese Patent No. 2 (202)021735802.4, this utility model relates to a novel sealed and waterproof wire for electrical connectors, comprising an insulating outer sheath and multi-stranded twisted copper wires, with the gaps between the multi-stranded copper wires filled with hot melt adhesive. This novel sealed and waterproof wire for electrical connectors utilizes hot melt adhesive to fill the gaps between the copper wires, preventing moisture from entering the wire's interior through these gaps, eliminating safety hazards, and effectively improving reliability and long-term service life. The wire can be produced automatically, resulting in high-quality products that are not easily damaged by external forces. The manufacturing process is cost-effective and does not affect the product's appearance; it can be manufactured into various specifications of wire.

[0004] Existing waterproof electrical connectors rely on filling the gaps in the metal conductors with hot melt adhesive to achieve a sealing and waterproof effect. However, hot melt adhesive hardens and becomes brittle at low temperatures due to its inherent properties. If the wire is then subjected to bending, the hot melt adhesive inside is prone to breakage or cracking. These cracks compromise the integrity of the hot melt adhesive, allowing external moisture to penetrate the metal conductors and affecting the wire's sealing and waterproof performance.

[0005] To address the aforementioned issues, a waterproof sealing wire for electrical connectors is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a sealed and waterproof wire for electrical connectors, which solves the problem in the prior art that hot melt adhesive is prone to cracking when exposed to cold stress, thus affecting the sealing and waterproof performance of the wire.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sealed and waterproof electrical connector wire, comprising an insulating wrapping layer, an inner wall of which is provided with a metal support mesh, and an inner wall of the metal support mesh is fixedly connected with a puncture component, the puncture component comprising a support portion, and an end of the support portion is integrally connected with a puncture portion, the support portion penetrating the interior of a polyester fiber buffer layer, the inner cavity of the insulating wrapping layer being filled with hot melt adhesive, and an additional sealing layer suspended on the outer wall of the hot melt adhesive, and a metal wire being disposed inside the hot melt adhesive.

[0008] Preferably, the supplementary sealing layer comprises a polyurea microcapsule shell, the interior of which is filled with a filler, and an internal piercing block is suspended inside the filler, and the internal piercing block is shaped as a triangular pyramid.

[0009] Preferably, the metal support mesh includes a first metal wire, a second metal wire, and an interlacing point. The metal support mesh is woven from the first metal wire and the second metal wire in a mesh pattern, and the interlacing point is the intersection of the first metal wire and the second metal wire.

[0010] Preferably, the metal wire is made of five or more strands of copper wire, and the gaps inside the metal wire are filled with hot melt adhesive.

[0011] Preferably, the metal support mesh is nested outside the polyester fiber buffer layer, and the gaps between the metal support mesh and the interior of the polyester fiber buffer layer are filled with hot melt adhesive.

[0012] Preferably, the puncture portion is cone-shaped, the support portion is cylindrical, the length of the support portion is greater than the thickness of the polyester fiber buffer layer, and the end of the support portion away from the puncture portion is welded to the interlacing point.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model provides a sealed and waterproof electrical connector wire. By filling the gaps in the metal wires with hot melt adhesive, the gaps inside the wire are sealed, effectively preventing the intrusion of external moisture and enhancing the sealing and waterproof performance of the wire. At the same time, it is provided with microcapsules containing filler. When the hot melt adhesive is subjected to stress and cracks appear, the microcapsules can rupture, and the filler can repair and seal the cracks in the hot melt adhesive, further ensuring its sealing performance. It is also provided with a puncture part and an inner puncture block to facilitate the rupture of the polyurea microcapsule shell under stress. Attached Figure Description

[0015] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0016] Figure 2This is a schematic cross-sectional view of the supplementary sealing layer portion of this utility model;

[0017] Figure 3 This is a schematic diagram of the mesh structure of the metal support mesh portion of this utility model;

[0018] Figure 4 for Figure 1 A magnified structural diagram of point A in the middle.

[0019] In the diagram: 1. Insulating wrapping layer; 2. Metal support mesh; 201. First metal wire; 202. Second metal wire; 203. Interlacing point; 3. Puncture component; 301. Support part; 302. Puncture part; 4. Polyester fiber buffer layer; 5. Supplemental sealing layer; 501. Polyurea microcapsule shell; 502. Filler; 503. Inner puncture block; 6. Hot melt adhesive; 7. Metal wire. Detailed Implementation

[0020] 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.

[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0022] Example 1

[0023] Please see Figure 1 and Figure 4 This utility model discloses a sealed and waterproof electrical connector wire, comprising an insulating wrapping layer 1, an inner wall of which is provided with a metal support mesh 2, and a puncture component 3 is fixedly connected to the inner wall of the metal support mesh 2. The puncture component 3 includes a support part 301, and the end of the support part 301 is integrally connected with a puncture part 302. The support part 301 penetrates the interior of a polyester fiber buffer layer 4. The inner cavity of the insulating wrapping layer 1 is filled with hot melt adhesive 6, and a supplementary sealing layer 5 is suspended on the outer wall of the hot melt adhesive 6. A metal wire 7 is disposed inside the hot melt adhesive 6.

[0024] Please see Figure 2 , Figure 3 and Figure 4The present invention discloses a sealing and waterproof wire for an electrical connector. The supplementary sealing layer 5 includes a polyurea microcapsule shell 501, which is filled with a filler 502. An inner puncture block 503 is suspended inside the filler 502. The inner puncture block 503 is shaped as a triangular pyramid, the puncture part 302 is shaped as a cone, the support part 301 is shaped as a cylinder, and the length of the support part 301 is greater than the thickness of the polyester fiber buffer layer 4. The end of the support part 301 away from the puncture part 302 is welded to the interlacing point 203.

[0025] The filler 502 can be made of silicone sealant. Silicone sealant has excellent weather resistance and temperature resistance. It can maintain good elasticity and sealing performance in a temperature range of -60℃ to 200℃. After the silicone sealant is filled inside the polyurea microcapsule shell 501, when the polyurea microcapsule shell 501 breaks, the silicone sealant can fill the gaps in the wire well. The inner piercing block 503 is a triangular pyramidal particle made of metal. The filler 502 and the inner piercing block 503 are mixed together to form a mixture. The mixture containing metal particles and silicone sealant is placed in an ultrasonic cleaner or ultrasonic dispersion device. The metal particles are uniformly dispersed in the silicone sealant by ultrasonic vibration.

[0026] When preparing the oil phase, aliphatic isocyanates containing isocyanate groups and hydrophobic amines are dissolved in silicone sealant in a certain proportion. The silicone sealant with well dispersed metal particles is added as the base solvent. In this way, during the subsequent polymerization reaction, the metal particles will be encapsulated in the silicone sealant inside the polyurea microcapsules. At the same time, the mixture is stirred during the addition process to ensure that the metal particles do not precipitate due to gravity.

[0027] The supplementary sealing layer 5 is distributed inside the hot melt adhesive 6. At low temperatures, when the hot melt adhesive 6 becomes brittle and cracks appear due to bending force, the bending of the wire will also cause the metal support mesh 2 to bend, causing the piercing component 3 on its inner wall to move inward. The piercing part 302 at its end pierces the polyurea microcapsule shell 501, releasing the filler 502 inside the polyurea microcapsule shell 501 to repair and seal the cracks inside the hot melt adhesive 6. At the same time, even if the polyurea microcapsule shell 501 is not pierced by the external piercing part 302, when the supplementary sealing layer 5 is subjected to compressive force, its internal piercing block 503 may also pierce the polyurea microcapsule shell 501 from the inside, allowing the filler 502 to flow out and repair and seal the cracks, providing double protection.

[0028] Please see Figure 3The present invention relates to a sealing and waterproof wire material for an electrical connector. The metal support mesh 2 includes a first metal wire 201, a second metal wire 202, and an interlacing point 203. The metal support mesh 2 is woven from the first metal wire 201 and the second metal wire 202 in a mesh pattern. The interlacing point 203 is the intersection of the first metal wire 201 and the second metal wire 202.

[0029] Mesh weaving is a method of weaving multiple fibers, metal wires or other linear materials into a mesh structure by interlacing and wrapping them. This wire uses a mesh layer woven from metal wires inside the wire to support it and provide additional protection and performance enhancement.

[0030] Please see Figure 1 This utility model discloses a sealed and waterproof electrical connector wire. The metal conductor 7 is made of five or more strands of copper wire, and the gaps inside the metal conductor 7 are filled with hot melt adhesive 6. The hot melt adhesive 6 is used to fill the gaps between the metal conductors 7 to prevent water vapor from entering and improve the waterproof performance of the wire.

[0031] Please see Figure 1 This utility model discloses a sealed and waterproof electrical connector wire. A metal support mesh 2 is nested outside a polyester fiber buffer layer 4, and the gaps between the metal support mesh 2 and the interior of the polyester fiber buffer layer 4 are filled with hot melt adhesive 6. The polyester fiber buffer layer 4 has good flexibility and elasticity. When the wire is subjected to external impact or expands and contracts under temperature changes, the buffer layer can absorb energy and reduce the impact on the hot melt adhesive 6. In low-temperature environments, even if the hot melt adhesive 6 becomes brittle, the polyester fiber can buffer the external force and reduce the possibility of cracks in the hot melt adhesive 6. In high-temperature environments, the polyester fiber can also constrain the flow of the hot melt adhesive 6 to a certain extent and maintain its position in the gap.

[0032] 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 process, method, article, or apparatus.

[0033] 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 sealing wire for electrical connectors, characterized in that: The device includes an insulating wrapping layer (1), the inner wall of which is provided with a metal support mesh (2), and the inner wall of the metal support mesh (2) is fixedly connected with a puncture component (3). The puncture component (3) includes a support part (301), and the end of the support part (301) is integrally connected with a puncture part (302). The support part (301) penetrates the interior of the polyester fiber buffer layer (4). The inner cavity of the insulating wrapping layer (1) is filled with hot melt adhesive (6), and a supplementary sealing layer (5) is suspended on the outer wall of the hot melt adhesive (6). A metal wire (7) is provided inside the hot melt adhesive (6). The supplementary sealing layer (5) includes a polyurea microcapsule shell (501), the interior of which is filled with a filler (502), and an internal piercing block (503) is suspended inside the filler (502), and the internal piercing block (503) is configured to be a triangular pyramid shape.

2. The sealing and waterproof wire for an electrical connector according to claim 1, characterized in that: The metal support mesh (2) includes a first metal wire (201), a first metal wire (201), and an interlacing point (203). The metal support mesh (2) is woven from the first metal wire (201) and the second metal wire (202) in a mesh pattern. The interlacing point (203) is the intersection of the first metal wire (201) and the second metal wire (202).

3. The sealing and waterproof wire for an electrical connector according to claim 1, characterized in that: The metal wire (7) is made of five or more strands of copper wire, and the gaps inside the metal wire (7) are filled with hot melt adhesive (6).

4. The sealing and waterproof wire for an electrical connector according to claim 1, characterized in that: The metal support mesh (2) is nested outside the polyester fiber buffer layer (4), and the gaps between the metal support mesh (2) and the polyester fiber buffer layer (4) are filled with hot melt adhesive (6).

5. The sealing and waterproof wire for an electrical connector according to claim 1, characterized in that: The puncture part (302) is cone-shaped, the support part (301) is cylindrical, and the length of the support part (301) is greater than the thickness of the polyester fiber buffer layer (4). The end of the support part (301) away from the puncture part (302) is welded to the interlacing point (203).

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