A multifunctional composite seal ring for an electrical connector

Abstract

The utility model discloses belong to the technical field of electric connector, concretely for a kind of multifunctional composite sealing ring for electric connector, including outside insulating sealing area, the inside of outside insulating sealing area is equipped with intermediate conductive shielding area, the inside of intermediate conductive shielding area is equipped with inside metal heat dissipation area, the outer surface of outside insulating sealing area is covered with super-hydrophobic nano coating, the inside and outside surface of intermediate conductive shielding area is equipped with vertical grain with micro convex point array, the inside metal heat dissipation area is equipped with the flexible metal fin that is embedded in intermediate conductive shielding area and extends to connector interior.The utility model integrates insulation sealing, electromagnetic shielding and heat conduction function in single sealing ring by composite structure, replaces traditional multiple discrete elements, simplifies connector structure, improves assembly reliability.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, specifically to a multifunctional composite sealing ring for electrical connectors. Background Technology

[0002] Electrical connectors are core connection components in electrical systems, and their overall performance directly affects the stability and safety of the electrical system. Especially in fields such as new energy vehicles and high-end equipment manufacturing, electrical connectors not only need to operate stably in complex electromagnetic environments, but also face the challenges of heat dissipation due to high power density and the harsh tests of outdoor operating conditions.

[0003] Traditional connectors rely heavily on discrete components for shielding, sealing, and heat dissipation. However, this approach has inherent drawbacks: complex structure and high assembly costs; interfaces between components are prone to failure under vibration, affecting the long-term stability of shielding and sealing; heat accumulation at the mating interface is severe, and traditional heat dissipation paths are inefficient, posing a risk of overheating. Furthermore, traditional sealing rings have limited functionality and struggle to cope with sealing aging caused by outdoor dust, salt spray corrosion, and temperature cycling. This not only affects the stable use of electrical connectors but also easily leads to safety issues. Therefore, a multifunctional composite sealing ring for electrical connectors has been invented. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A multifunctional composite sealing ring for an electrical connector includes an outer insulating sealing area, an inner intermediate conductive shielding area, an inner inner metal heat dissipation area, an outer surface of the outer insulating sealing area covered with a superhydrophobic nano-coating, vertical textures with micro-bump arrays on both the inner and outer surfaces of the intermediate conductive shielding area, and a flexible metal wing embedded in the intermediate conductive shielding area and extending into the connector.

[0005] As a preferred embodiment of the multifunctional composite sealing ring for electrical connectors described in this utility model, the outer insulating sealing area is made of insulating silicone rubber material.

[0006] As a preferred embodiment of the multifunctional composite sealing ring for electrical connectors described in this utility model, the intermediate conductive shielding area is made of silicone rubber filled with silver-coated copper powder and boron nitride.

[0007] As a preferred embodiment of the multifunctional composite sealing ring for electrical connectors described in this utility model, the flexible metal wing is a phosphor bronze sheet.

[0008] As a preferred embodiment of the multifunctional composite sealing ring for electrical connectors described in this utility model, the cross section of the outer insulating sealing area has a positioning hole.

[0009] As a preferred embodiment of the multifunctional composite sealing ring for electrical connectors described in this utility model, a highly thermally conductive insulating silicone grease is filled between the flexible metal wing and the intermediate conductive shielding area.

[0010] As a preferred embodiment of the multifunctional composite sealing ring for electrical connectors described in this utility model, the outer surface of the flexible metal wing is provided with a graphene coating, and a reinforcing component is provided between the graphene coating and the flexible metal wing.

[0011] As a preferred embodiment of the multifunctional composite sealing ring for electrical connectors described in this utility model, the reinforcing component includes a first micro-receiving groove and a second micro-receiving groove. The flexible metal wing has the first micro-receiving groove and the second micro-receiving groove sequentially formed from the outside to the inside. Both the first micro-receiving groove and the second micro-receiving groove are provided with a graphene coating. The diameter of the first micro-receiving groove is smaller than the diameter of the second micro-receiving groove.

[0012] Compared with existing technologies: 1. Multifunctional integrated design: The composite structure integrates insulation sealing, electromagnetic shielding and heat conduction functions into a single sealing ring, replacing multiple discrete components, simplifying the connector structure and improving assembly reliability.

[0013] 2. Superior electromagnetic shielding performance: The micro-bump array on the outer surface of the conductive shielding area can pierce the oxide layer of the metal shell with a small locking force, achieving ultra-low contact resistance. Combined with the elastic buffer design of vertical grooves, it ensures that stable shielding performance can be maintained even in vibration environments.

[0014] 3. Highly efficient thermal management: The inner embedded flexible metal fins and the internal cavity filled with high thermal conductivity silicone grease form an efficient heat conduction path, which can quickly guide the heat at the mating interface to the inside of the connector for dissipation, significantly reducing the risk of overheating.

[0015] 4. Excellent environmental adaptability and enhanced safety: The outer superhydrophobic nano-coating provides self-cleaning and enhanced waterproofing, while also resisting UV aging and salt spray corrosion. The positioning snap-fit ​​design ensures easy and secure assembly. These features significantly improve the durability and safety of the electrical connector in complex outdoor environments. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2This is a cross-sectional schematic diagram of the flexible metal winglet of this utility model; Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the structure of the first and second micro storage slots of this utility model.

[0017] In the figure: 1. Superhydrophobic nano-coating; 2. Outer insulating sealing area; 3. Vertical texture; 4. Positioning card hole; 5. Middle conductive shielding area; 6. Flexible metal wing; 61. Graphene coating; 62. First micro storage groove; 63. Second micro storage groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0019] This utility model provides a multifunctional composite sealing ring for electrical connectors. Please refer to [link / reference]. Figures 1-4 The connector includes an outer insulating sealing area 2, an inner intermediate conductive shielding area 5, and an inner metal heat dissipation area. The outer surface of the outer insulating sealing area 2 is covered with a superhydrophobic nano-coating 1. Both the inner and outer surfaces of the intermediate conductive shielding area 5 are provided with vertical lines 3 featuring a micro-bump array. The inner metal heat dissipation area has flexible metal fins 6 embedded within the intermediate conductive shielding area 5 and extending into the connector. The superhydrophobic nano-coating 1, through its micro-nano composite structure and low surface energy characteristics, allows water droplets to quickly roll off, carrying away surface dust, salt particles, etc., achieving self-cleaning and resistance to salt spray corrosion. The vertical lines 3 with micro-bump array provide greater elastic deformation space and contact area during compression, effectively absorbing vibration energy. Simultaneously, the increased surface area enhances heat dissipation capacity, and the micro-bumps can pierce the oxide layer of the plug or socket's metal shell with relatively small locking force, achieving ultra-low contact resistance.

[0020] The outer insulating sealing area 2 is made of insulating silicone rubber material, which achieves a reliable physical seal through the continuous rebound force generated by pressure, effectively preventing the intrusion of external liquid water, dust and other contaminants. As the structural matrix of the sealing ring, this material provides stable mechanical support and encapsulation protection for the inner functional layer. Its inherent high volume resistivity completely isolates the intermediate conductive shielding area 5 from the outer metal shell electrically, fundamentally eliminating the risk of leakage or short circuit caused by condensation or contamination.

[0021] The intermediate conductive shielding area 5 is made of silicone rubber filled with silver-coated copper powder and boron nitride. The silver-coated copper powder forms a continuous conductive network in the matrix, achieving efficient electromagnetic shielding; the boron nitride filler constructs an auxiliary thermal conductivity path, synergistically enhancing lateral thermal conductivity with the metal particles. This composite material enables a single functional area to possess both excellent electrical and thermal conductivity, providing a low-impedance path for interference currents and rapidly diffusing interfacial heat to the entire sealing ring surface, creating conditions for subsequent heat dissipation.

[0022] The flexible metal wing 6 is a thin phosphor bronze sheet that forms a directional thermal bridge across the insulating sealing area. It is in close contact with the internal cavity filled with highly thermally conductive insulating silicone grease, creating a low thermal resistance heat conduction path from the interface hotspot to the connector's internal space. When the connector is in operation, the Joule heat generated at the mating interface due to contact resistance and electromagnetic eddy current effects is first rapidly captured and laterally diffused by the intermediate conductive shielding area 5 of the highly thermally conductive filler, and then efficiently transferred to the flexible metal wing 6 through the interface. Utilizing its thermal conductivity, which is much higher than that of rubber, the flexible metal wing 6 rapidly conducts heat along its axial direction to the free end suspended within the connector's internal space. Finally, through convective heat transfer between the free end and the internal air, and contact heat conduction with the internal metal components, the heat is efficiently dissipated, thereby achieving active regulation of the interface temperature and preventing heat accumulation.

[0023] The outer insulating sealing area 2 has a positioning hole 4 in its cross section, which cooperates with the snap-fit ​​structure on the corresponding connector housing to ensure that the sealing ring is accurately positioned and firmly installed during assembly, preventing displacement or detachment due to vibration or insertion / removal operations.

[0024] The flexible metal wing 6 and the intermediate conductive shielding area 5 are filled with highly thermally conductive insulating silicone grease.

[0025] The outer surface of the flexible metal wing 6 is provided with a graphene coating 61, and a reinforcing component is provided between the graphene coating 61 and the flexible metal wing 6; the graphene coating 61 is formed by graphene coating, and the graphene coating 61 can improve the corrosion resistance of the flexible metal wing 6 while ensuring the high thermal performance of the flexible metal wing 6.

[0026] The reinforcing component includes a first micro-receiving groove 62 and a second micro-receiving groove 63. The flexible metal wing 6 has the first micro-receiving groove 62 and the second micro-receiving groove 63 sequentially formed from the outside to the inside. Both the first micro-receiving groove 62 and the second micro-receiving groove 63 are provided with a graphene coating 61. The diameter of the first micro-receiving groove 62 is smaller than the diameter of the second micro-receiving groove 63. By setting the first micro-receiving groove 62 and the second micro-receiving groove 63, the graphene coating 61 can adhere to the groove, preventing it from falling off.

[0027] In this embodiment, the outer insulating sealing area 2 not only provides a basic seal, but also provides a stable mounting base and electrical isolation guarantee for the middle conductive shielding area 5; while the middle conductive shielding area 5 establishes an electromagnetic shielding channel through the micro-bump array, its high thermal conductivity forms an efficient heat conduction chain with the inner flexible metal fins 6; the flexible metal fins 6 act as thermal bridges to conduct heat from the interface, and their pre-embedded structure enhances the mechanical stability of the middle conductive shielding area 5; the superhydrophobic nano-coating 1 provides long-term reliability of the entire sealing ring through its self-cleaning function.

[0028] In practical use, the specific operating steps for those skilled in the art are as follows: When the plug and socket are mated and locked, the sealing ring first generates a continuous radial sealing force through the elastic deformation of the outer insulating sealing area 2, while the positioning hole 4 ensures precise installation. Under the locking force, the micro-protrusion array on the surface of the intermediate conductive shielding area 5 pierces the oxide layer on the mating metal surface, establishing a stable low-impedance shielding path. The heat generated by the conductive terminals is first diffused laterally by the intermediate conductive shielding area 5, then quickly conducted to the internal space of the connector through the pre-embedded flexible metal fins 6, and finally dissipated through convection between the surface of the flexible metal fins 6 and the internal air.

[0029] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multifunctional composite sealing ring for an electrical connector, comprising an outer insulating sealing area (2), an inner intermediate conductive shielding area (5) provided inside the outer insulating sealing area (2), and an inner metal heat dissipation area provided inside the inner intermediate conductive shielding area (5), characterized in that: The outer surface of the outer insulating sealing area (2) is covered with a superhydrophobic nano coating (1), and the inner and outer surfaces of the middle conductive shielding area (5) are provided with vertical textures (3) with micro-bump arrays. The inner metal heat dissipation area is provided with flexible metal wing (6) embedded in the middle conductive shielding area (5) and extending into the connector.

2. The multifunctional composite sealing ring for an electrical connector according to claim 1, characterized in that, The outer insulating sealing area (2) is made of insulating silicone rubber material.

3. The multifunctional composite sealing ring for electrical connectors according to claim 1, characterized in that, The intermediate conductive shielding area (5) is made of silicone rubber filled with silver-coated copper powder and boron nitride.

4. A multifunctional composite sealing ring for an electrical connector according to claim 1, characterized in that, The flexible metal wing (6) is a thin sheet of phosphor bronze.

5. A multifunctional composite sealing ring for an electrical connector according to claim 1, characterized in that, The cross section of the outer insulating sealing area (2) has a positioning hole (4).

6. A multifunctional composite sealing ring for an electrical connector according to claim 1, characterized in that, The flexible metal wing (6) and the intermediate conductive shielding area (5) are filled with highly thermally conductive insulating silicone grease.

7. A multifunctional composite sealing ring for an electrical connector according to claim 1, characterized in that, The flexible metal wing (6) has a graphene coating (61) on its outer surface, and a reinforcing component is provided between the graphene coating (61) and the flexible metal wing (6).

8. A multifunctional composite sealing ring for an electrical connector according to claim 7, characterized in that, The reinforcing component includes a first micro storage groove (62) and a second micro storage groove (63). The flexible metal wing (6) has a first micro storage groove (62) and a second micro storage groove (63) sequentially formed from the outside to the inside. Both the first micro storage groove (62) and the second micro storage groove (63) are provided with a graphene coating (61). The diameter of the first micro storage groove (62) is smaller than the diameter of the second micro storage groove (63).

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