Two-way waterproof connector

Abstract

The utility model relates to electric connection technical field especially a kind of two-way waterproof connector, including plug-in shell, alloy shell, first insulator, second insulator, plug-in terminal, wiring terminal and connecting wire, plug-in shell is set in the outside of alloy shell, alloy shell is provided with first fixed cavity and second fixed cavity, first fixed cavity and second fixed cavity are vertically communicated, one end of first fixed cavity is provided with plug-in cavity, first insulator is set in first fixed cavity, and one end extends to plug-in cavity, the other end extends to second fixed cavity, second insulator is set in second fixed cavity, second insulator is provided with electricity connection cavity, wiring terminal is set in electricity connection cavity, plug-in terminal is set in first insulator, and one end extends to electricity connection cavity and is connected with wiring terminal, one end of connecting wire is connected with wiring terminal. The utility model is suitable for new energy automobile, senior driving auxiliary system and other extremely high reliability requirements field of connector.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, and in particular to a bidirectional waterproof connector. Background Technology

[0002] With the increasing complexity of automotive electronic systems and the diversification of operating environments, the waterproof sealing performance of automotive connectors has become a key indicator for ensuring their long-term reliability. Traditional wire-end connectors, especially those used for FAKRA RF signal or power transmission, often rely on single-point static sealing rings or simple planar crimp structures for their sealing design. These structures lack the stability and durability of the sealing interface to cope with the frequent vibrations, temperature changes, and potential mating misalignments in the automotive environment. They are prone to seal failure due to material aging, lip wear, or relaxation of installation stress, leading to moisture and dust intrusion into the internal cavity, causing terminal corrosion, decreased insulation performance, and even short circuits. Furthermore, existing sealing solutions often conflict with the trend towards high-density and miniaturization of connectors. Complex sealing structures may occupy excessive space, increasing the overall size and making it difficult to adapt to the installation requirements of compact engine compartments or body control units. Simultaneously, the high requirements for the positioning and protection of the sealing ring during assembly increase the manufacturing difficulty and cost.

[0003] Therefore, there is an urgent need for an innovative bidirectional waterproof connector structure that can achieve dynamic sealing with higher reliability and stronger environmental adaptability within a limited space. In particular, it is necessary to optimize the contact form between the sealing ring and the mating shell to improve the waterproof and dustproof rating under harsh working conditions and meet the urgent needs of modern automobiles, especially new energy vehicles and outdoor intelligent equipment, for high-performance sealing of connectors. Utility Model Content

[0004] To address the aforementioned issues, this invention effectively enhances the device's protective capabilities, mechanical durability, and electrical performance in automotive environments, while also balancing high production efficiency and space saving. It is highly suitable for use in bidirectional waterproof connectors in fields such as new energy vehicles and advanced driver assistance systems, where connector reliability is paramount.

[0005] The technical solution adopted by this utility model is: a bidirectional waterproof connector, including a plug-in shell, an alloy shell, a first insulator, a second insulator, a plug-in terminal, a wiring terminal, and a connecting wire. The plug-in shell is disposed outside the alloy shell. The alloy shell is provided with a first fixing cavity and a second fixing cavity. The first fixing cavity and the second fixing cavity are perpendicularly connected. One end of the first fixing cavity is provided with a plug-in cavity. The first insulator is disposed in the first fixing cavity, with one end extending into the plug-in cavity and the other end extending into the second fixing cavity. The second insulator is disposed in the second fixing cavity and is provided with a power receiving cavity. The wiring terminal is disposed in the power receiving cavity. The plug-in terminal is disposed in the first insulator, with one end extending into the power receiving cavity and connected to the wiring terminal. The connecting wire is connected to one end of the wiring terminal.

[0006] A further improvement to the above scheme is that the alloy shell is provided with a plug-in sleeve and a wiring part, the plug-in sleeve and the wiring part are vertically connected, the plug-in sleeve is provided with a sealing mounting groove outside the plug-in cavity, a first sealing ring is installed on the sealing mounting groove, and a plurality of sealing lips are provided on the outer periphery of the first sealing ring; the plug-in outer shell is provided with a mating cavity, and the inner wall of the mating cavity faces the sealing lips.

[0007] A further improvement to the above scheme is that the alloy shell is provided with an assembly groove at the top of the second fixing cavity, one end of the second fixing cavity is connected to the assembly groove, and the second insulator is installed into the second fixing cavity from the assembly groove; the assembly groove is provided with a sealing groove on the outer periphery of the second fixing cavity, a second sealing ring is installed in the sealing groove, and a sealing cover plate is installed in the assembly groove, the sealing cover plate is used to cooperate with the second sealing ring to seal the assembly groove.

[0008] A further improvement to the above solution is that the plug-in outer shell is provided with a connecting buckle, the plug-in sleeve is provided with a connecting slot on one side of the sealing mounting groove, the connecting buckle is engaged in the connecting slot, and a limiting protrusion is provided on the outer periphery of the plug-in sleeve, the limiting protrusion being used to limit the connecting buckle.

[0009] A further improvement to the above solution is that a locking buckle is provided on one side of the plug-in housing, the locking buckle is provided with a locking slot and a locking groove, the locking slot is located below the locking groove, a pressing part extends from one side of the locking buckle, and one side of the pressing part extends backward; the plug-in cavity is provided with a positioning groove, and the positioning groove is opposite to the locking groove.

[0010] A further improvement to the above scheme is that the insertion cavity and the first fixing cavity are sequentially arranged in the insertion sleeve, and the second fixing cavity is arranged in the wiring part; the connecting wire is arranged in the wiring part and connected to the wiring terminal; the wiring terminal is inserted into the second fixing cavity of the second insulator from the bottom of the wiring part.

[0011] A further improvement to the above scheme is that an electrical connection sleeve is provided on the insertion cavity, and an electrical connection end and an electrical connection plug end are respectively provided at both ends of the electrical connection sleeve. The electrical connection end is provided on the first insulator, and the electrical connection plug end extends to the port of the first fixed cavity.

[0012] A further improvement to the above scheme is that the power connection end is provided with a limiting inner ring, and the first insulator is provided with a backstop step. The limiting inner ring is used to abut against the backstop step to prevent the power connection sleeve from retracting.

[0013] A further improvement to the above solution is that the inner circumference of the electrical connection end is provided with an electrical contact spring, which is used to make contact with the connector to conduct electricity and generate friction.

[0014] A further improvement to the above scheme is that the second insulator has an assembly plane on the side facing the first fixing cavity, the assembly plane has an assembly slot, one end of the first insulator is inserted into the assembly slot and extends to the electrical connection cavity.

[0015] A further improvement to the above scheme is that the two ends of the plug-in terminal are respectively provided with a mating part and a power receiving part, the mating part extends into the plug-in cavity, and the power receiving part extends into the power receiving cavity and is connected to the wiring terminal.

[0016] A further improvement to the above scheme is that the mating part is provided with a mating hole and a groove, the groove being used to cut the mating hole into two halves to generate tension during mating; the electrical connection part is provided with electrical connection clips, two of which are arranged opposite each other, forming a mating groove between the two electrical connection clips; the terminal is provided with an insertion end, the insertion end being inserted into the mating groove.

[0017] A further improvement to the above solution is that the connecting wire is provided with a fixed jacket and a tightening jacket. The fixed jacket is located at the connection point, and the tightening jacket is used to cover the connection point, the fixed jacket, and the connecting wire.

[0018] The beneficial effects of this utility model are: Compared to existing connectors, this utility model includes a plug-in housing, an alloy housing, a first insulator, a second insulator, plug-in terminals, wiring terminals, and connecting wires. Through a structurally multi-seal design, it improves the connector's environmental adaptability, electrical reliability, and assembly efficiency, perfectly meeting the stringent requirements of automotive FAK connectors for high protection, high vibration tolerance, and miniaturization. The plug-in sleeve of the alloy housing has a sealing mounting groove on its exterior and is fitted with a first sealing ring with multiple sealing lips. This forms multiple elastic contact barriers with the inner wall of the plug-in housing's mating cavity, enhancing the fault tolerance of the sealing interface and the uniformity of contact pressure. Even under conditions of installation tolerances or vibration-induced micro-movements, it effectively prevents external moisture, dust, oil, and other contaminants from intruding into the plug-in cavity and internal electrical areas, ensuring long-term stable operation of the connector in harsh automotive environments such as humid and dusty conditions. The alloy housing adopts an integrated design with the plug-in sleeve and wiring section vertically connected, and internally features a first fixed cavity and a second fixed cavity that are vertically connected to each other, achieving a three-dimensional, modular, and partitioned layout of the plug-in terminals and wiring terminals. Optimized space utilization and reduced overall volume, along with ensuring the cable exit direction is perpendicular to the insertion direction, significantly improves adaptability to installation in confined spaces and cable management, avoiding excessive bending. The second insulator is axially inserted into the second fixing cavity via a top mounting groove, providing clear assembly guidance, simplifying the assembly process, improving production efficiency and consistency, and reducing human error. The alloy housing itself provides excellent mechanical strength, vibration resistance, and impact resistance. A sealing groove with a second sealing ring is installed on the outer periphery of the mounting groove, and then pressed together by a sealing cover plate, forming a reliable static seal on the port of the second fixing cavity, preventing contaminants from entering from the top. The dual seals work together to comprehensively improve overall sealing integrity. The internal insulator and terminals adopt a layered guiding and plug-in fixing design, ensuring the positional stability of each component in a vibration environment and reducing the risk of fretting wear. The direct connection between the plug-in terminals and the wiring terminals shortens the current path, reduces contact resistance and signal attenuation, and ensures high current carrying capacity and low-loss transmission of high-frequency signals. This utility model effectively improves its protection capabilities, mechanical durability, and electrical performance in the vehicle environment through innovative three-dimensional layout, double sealing mechanism, and modular assembly design, while taking into account both production efficiency and space saving. It is very suitable for application in fields with extremely high requirements for connector reliability, such as new energy vehicles and advanced driver assistance systems. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the bidirectional waterproof connector of this utility model; Figure 2 for Figure 1 Exploded view of a bidirectional waterproof connector; Figure 3 for Figure 1An exploded view of the bidirectional waterproof connector from another perspective; Figure 4 for Figure 1 Front view schematic diagram of a bidirectional waterproof connector; Figure 5 for Figure 4 Sectional view of AA; Figure 6 This is a schematic diagram showing the connection between the plug-in terminal and the wiring terminal in this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Plug-in housing; 11. Plug-in cavity; 12. Connecting buckle; 13. Locking buckle; 131. Locking slot; 132. Locking groove; 133. Pressing part; 2. Alloy housing; 21. First fixing cavity; 22. Second fixing cavity; 23. Plug-in cavity; 231. Positioning groove; 24. Plug-in sleeve; 25. Wiring part; 26. Sealing mounting groove; 261. First sealing ring; 262. Sealing lip; 27. Assembly groove; 271. Sealing groove; 272. Second sealing ring; Sealing cover. Plate 273, power-connecting sleeve 28, power-connecting connection end 281, power-connecting plug end 282, limiting inner ring 283, power-connecting spring 284, first insulator 3, anti-retraction step 31, second insulator 4, power-connecting cavity 41, assembly plane 42, assembly slot 43, plug-in terminal 5, plug-in part 51, plug-in hole 511, groove 512, power-connecting part 52, power-connecting clip 521, wiring terminal 6, insertion end 61, connecting wire 7, fixing jacket 71, tightening jacket 72. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-6As shown, in one embodiment of this utility model, a bidirectional waterproof connector is provided, including a plug-in housing 1, an alloy housing 2, a first insulator 3, a second insulator 4, a plug-in terminal 5, a wiring terminal 6, and a connecting wire 7. The plug-in housing 1 is disposed outside the alloy housing 2. The alloy housing 2 is provided with a first fixing cavity 21 and a second fixing cavity 22, which are perpendicularly connected. One end of the first fixing cavity 21 is provided with a plug-in cavity 23. The first insulator 3 is disposed in the first fixing cavity 21, with one end extending to the plug-in cavity 23 and the other end extending to the second fixing cavity 22. The second insulator 4 is disposed in the second fixing cavity 22 and is provided with a power receiving cavity 41. The wiring terminal 6 is disposed in the power receiving cavity 41. The plug-in terminal 5 is disposed in the first insulator 3, with one end extending to the power receiving cavity 41 and connected to the wiring terminal 6. The connecting wire 7 is connected to one end of the wiring terminal 6. The alloy housing 2 is provided with a plug-in sleeve 24 and a wiring part 25. The plug-in sleeve 24 and the wiring part 25 are vertically connected. The plug-in sleeve 24 is provided with a sealing mounting groove 26 outside the plug-in cavity 23. A first sealing ring 261 is installed on the sealing mounting groove 26. Multiple sealing lips 262 are provided on the outer periphery of the first sealing ring 261. The plug-in outer shell 1 is provided with a mating cavity 11. The inner wall of the mating cavity 11 faces the sealing lips 262. The sealing lips 262 increase the sealing contact area and form multiple elastic contact barriers with the mating connector housing during the plugging process, effectively improving the resistance and fault tolerance of the sealing interface, and reliably preventing external moisture, dust and other contaminants from entering the plug-in cavity 23.

[0024] An assembly groove 27 is provided at the top of the alloy shell 2 at the second fixing cavity 22. One end of the second fixing cavity 22 is connected to the assembly groove 27. The second insulator 4 is inserted into the second fixing cavity 22 through the assembly groove 27. A sealing groove 271 is provided on the outer periphery of the assembly groove 27 at the second fixing cavity 22. A second sealing ring 272 is installed in the sealing groove 271. A sealing cover plate 273 is installed in the assembly groove 27. The sealing cover plate 273 is used to seal the assembly groove 27 in conjunction with the second sealing ring 272. This embodiment provides a clear assembly path and guiding benchmark, reducing the risk of insulator skewing, jamming, or misalignment during installation, and improving production assembly efficiency and consistency. The assembly groove 27 serves as an axial guide structure, ensuring that the second insulator 4 can be smoothly inserted into the second fixing cavity 22 along a preset direction, avoiding component damage or sealing structure destruction caused by forced assembly. The second sealing ring 272 is compressed and deformed within the sealing groove 271, forming a continuous and stable annular sealing interface. This effectively prevents external contaminants such as moisture, dust, and oil from intruding into the second fixed cavity 22, thus improving the connector's protection level in harsh environments such as humid, dusty, or oily conditions. The synergistic effect of the sealing cover 273 and the second sealing ring 272 not only enhances the reliability of the axial seal but also prevents creep or displacement of the sealing ring during long-term use through structural constraints, maintaining the durability of the seal.

[0025] This embodiment includes a plug-in housing 1, an alloy housing 2, a first insulator 3, a second insulator 4, plug-in terminals 5, wiring terminals 6, and connecting wires 7. Through a structurally multi-seal design, the connector's environmental adaptability, electrical reliability, and assembly efficiency are improved, perfectly meeting the stringent requirements of automotive FAK connectors for high protection, high vibration tolerance, and miniaturization. The plug-in sleeve 24 of the alloy housing 2 has a sealing mounting groove 26 on its exterior and is fitted with a first sealing ring 261 with multiple sealing outer lips 262. This forms multiple elastic contact barriers with the inner wall of the mating cavity 11 of the plug-in housing 1, enhancing the fault tolerance of the sealing interface and the uniformity of contact pressure. Even under conditions of installation tolerances or fretting caused by vibration, it can effectively prevent external moisture, dust, oil, and other contaminants from intruding into the plug-in cavity 23 and the internal electrical area, ensuring long-term stable operation of the connector in harsh automotive environments such as humid and dusty conditions. The alloy housing 2 adopts an integrated design with the plug-in sleeve 24 and the wiring part 25 vertically connected. Internally, it features a first fixed cavity 21 and a second fixed cavity 22 that are perpendicularly connected, achieving a three-dimensional, modular, and partitioned layout of the plug-in terminal 5 and the wiring terminal 6. This optimizes space utilization, reduces the overall volume, and ensures that the outgoing direction of the connecting wire 7 is perpendicular to the plugging direction, greatly improving adaptability to installation in confined spaces and cable management, and avoiding excessive bending. The second insulator 4 is axially inserted into the second fixed cavity 22 through the top mounting groove 27, providing clear assembly guidance, simplifying the assembly process, improving production efficiency and consistency, and reducing human error. The alloy housing 2 itself provides excellent mechanical strength, vibration resistance, and impact resistance. A sealing groove 271 is provided on the outer periphery of the mounting groove 27, and a second sealing ring 272 is installed. This is then pressed together by the sealing cover plate 273, forming a reliable static seal on the port of the second fixed cavity 22, preventing contaminants from entering from the top. The dual seals work together to comprehensively improve the overall sealing integrity. The internal insulator and terminals employ a layered guiding and plug-in fixing design, ensuring the positional stability of each component under vibration and reducing the risk of fretting wear. The direct connection between plug-in terminal 5 and wiring terminal 6 shortens the current path, reduces contact resistance and signal attenuation, and ensures high current carrying capacity and low-loss transmission of high-frequency signals. This embodiment, through its innovative three-dimensional layout, dual sealing mechanism, and modular assembly design, effectively improves its protection capabilities, mechanical durability, and electrical performance in automotive environments, while also considering high production efficiency and space saving. It is highly suitable for applications in new energy vehicles, advanced driver assistance systems, and other fields with extremely high connector reliability requirements.

[0026] The plug-in housing 1 is provided with a connecting buckle 12, and the plug-in sleeve 24 is provided with a connecting groove 241 on one side of the sealing mounting groove 26. The connecting buckle 12 is engaged with the connecting groove 241. A limiting protrusion ring 242 is provided on the outer periphery of the plug-in sleeve 24, which is used to limit the connecting buckle 12. In this embodiment, by providing a connecting buckle 12 on the plug-in housing 1 and a corresponding connecting groove 241 on one side of the sealing mounting groove 26 of the plug-in sleeve 24, a quick and reliable snap-fit ​​fixation between the plug-in housing 1 and the alloy housing 2 is achieved. This simplifies the assembly operation, and the design of the limiting protrusion ring 242 effectively limits the axial displacement of the connecting buckle 12, preventing accidental loosening due to vibration or external force, and ensuring the mechanical stability of the overall connector structure. While achieving a firm connection, it avoids the problems of stripping, corrosion, or the need for additional tools that may occur with traditional threaded connections, improving assembly efficiency and connection reliability, and is especially suitable for automotive applications that require frequent plugging and unplugging or are in high-vibration environments.

[0027] A locking buckle 13 is provided on one side of the plug-in housing 1. The locking buckle 13 has a locking slot 131 and a locking groove 132. The locking slot 131 is located below the locking groove 132. A pressing part 133 extends from one side of the locking buckle 13, and one side of the pressing part 133 extends rearward. The plug-in cavity 23 is provided with a positioning groove 231, which is opposite to the locking groove 132. In this embodiment, the locking buckle 13 on one side of the plug-in housing 1 engages with the positioning groove 231 in the plug-in cavity 23 through the locking slot 131 at its lower part, forming a reliable secondary locking structure. This structure can effectively resist accidental loosening caused by vehicle vibration or external pulling, ensuring the continuous stability of the power or signal connection. The pressing part 133 extending from one side of the locking buckle 13 provides a clear human-machine interface. Users can easily release the lock by pressing backward, achieving quick separation and greatly simplifying the plugging and unplugging operation process. It ensures high-reliability locking while also being easy to operate, making it ideal for vehicle electrical connection points that require frequent maintenance or replacement.

[0028] The insertion cavity 23 and the first fixing cavity 21 are sequentially arranged in the insertion sleeve 24, and the second fixing cavity 22 is arranged in the wiring part 25. The connecting wire 7 is arranged in the wiring part 25 and connected to the terminal 6. The terminal 6 is inserted into the second fixing cavity 22 of the second insulator 4 from the bottom of the wiring part 25. In this embodiment, by integrating the insertion cavity 23 and the first fixing cavity 21 in the insertion sleeve 24 and independently arranging the second fixing cavity 22 in the wiring part 25, clear zoning and space optimization of the internal functions of the connector are achieved. This spatially isolates the live insertion terminal 5 module from the terminal 6 module of the connecting wire 7, effectively reducing mutual interference and improving electrical safety and signal transmission stability. The terminal 6 adopts an assembly method of being inserted into the second insulator 4 from the bottom of the wiring part 25, providing a clear axial assembly path, simplifying the production assembly process, and improving production efficiency and consistency. The connecting wire 7 is directly connected to the terminal block 6 inside the wiring section 25. The direction of the wire exit is clear, which avoids unnecessary bending of the cable inside the housing, reduces stress concentration, and enhances the mechanical reliability and durability of the cable connection.

[0029] A power-connecting sleeve 28 is provided on the insertion cavity 23. The two ends of the power-connecting sleeve 28 are respectively provided with a power-connecting connection end 281 and a power-connecting mating end 282. The power-connecting connection end 281 is disposed on the first insulator 3, and the power-connecting mating end 282 extends to the port of the first fixed cavity 21. In this embodiment, by providing an independent power-connecting sleeve 28 structure within the insertion cavity 23, the electrical connection performance and structural reliability of the connector are effectively optimized. One end of the power-connecting sleeve 28 is firmly disposed on the first insulator 3 via the power-connecting connection end 281, ensuring the stability of the electrical connection and insulation safety; the other end, the power-connecting mating end 282, precisely extends to the port of the first fixed cavity 21, providing precise guidance and alignment for the insertion of the mating terminals, reducing insertion resistance, avoiding terminal damage during the insertion process, and improving the insertion and removal feel and the connector's service life. It facilitates the passage of large currents and reduces heat generation. At the same time, its structure enhances the mechanical strength of the first fixed cavity 21 port, resists lateral forces during insertion and removal, and ensures the reliability of the connection during long-term use. It is especially suitable for harsh vehicle environments with frequent vibrations.

[0030] The electrical connection end 281 is provided with a limiting inner ring 283, and the first insulator 3 is provided with a backstop step 31. The limiting inner ring 283 is used to abut against the backstop step 31 to prevent the electrical sleeve 28 from retracting. Specifically, the inner circumference of the electrical mating end 282 is provided with an electrical contact spring 284, which is used to make contact with the connector for electrical conduction and to generate friction. In this embodiment, the cooperation structure of the limiting inner ring 283 and the backstop step 31 provides the electrical sleeve 28 with precise axial positioning and reliable mechanical backstop function. This prevents the electrical sleeve 28 from shifting inward or loosening during frequent insertion and removal or when subjected to vibration and impact, ensuring the long-term stability of its connection with the first insulator 3, thereby guaranteeing the long-term positional accuracy and electrical continuity of the core conductive component. Specifically, the electrical contact spring 284 provided on the inner circumference of the electrical mating end 282 can generate elastic deformation and provide continuous radial contact pressure when the mating terminal is inserted. The multi-point elastic contact method increases the effective contact area, which not only achieves low resistance and high stability electrical connection, but also the sliding friction generated helps to scrape off the oxide film on the surface of the mating terminals, keeping the contact surface clean and further improving conductivity and reliability. It is very suitable for vehicle power connection environments that require high vibration resistance and electrical stability.

[0031] The second insulator 4 has an assembly plane 42 on the side facing the first fixed cavity 21. The assembly plane 42 has an assembly slot 43. One end of the first insulator 3 is inserted into the assembly slot 43 and extends to the electrical connection cavity 41. In this embodiment, the assembly plane 42 and the assembly slot 43 on the second insulator 4, together with the first insulator 3, form a precise and stable plug-in positioning structure. This enables rapid and accurate alignment and assembly between the first insulator 3 and the second insulator 4, simplifying the production assembly process and improving production efficiency and product consistency. The insertion of one end of the first insulator 3 into the assembly slot 43 and its extension to the electrical connection cavity 41 forms a clear axial assembly path and reliable radial limiting, effectively preventing relative displacement or torsion of the two insulator components during use. This ensures that key conductive components such as the internal electrical connection sleeve 28 and the terminal block 6 remain in their designed positions, guaranteeing the long-term stability of the electrical connection.

[0032] The two ends of the plug-in terminal 5 are respectively provided with a mating portion 51 and a power receiving portion 52. The mating portion 51 extends to the plugging cavity 23, and the power receiving portion 52 extends to the power receiving cavity 41 and connects to the wiring terminal 6. Specifically, the mating portion 51 is provided with a mating hole 511 and a groove 512, which is used to cut the mating hole 511 into two halves to generate tension force during mating. The power receiving portion 52 is provided with two power receiving clips 521, which are arranged opposite each other and form a plugging groove between the two power receiving clips 521. The wiring terminal 6 is provided with an insertion end 61, which is inserted into the plugging groove. In this embodiment, the dual functions of plug-in connection and cable connection are optimized through an integrated design. Specifically, the mating portion 51, through its internal mating holes 511 and slots 512, generates a uniform elastic tension force when the male pin is inserted, ensuring a highly stable electrical connection with low contact resistance at the mating interface. It also effectively resists loosening caused by vibration, improving the mechanical and electrical reliability of the connector. Simultaneously, the contact portion 52 employs a mating groove structure composed of two opposing contact clips 521, forming a large-area, high-clamping-force cable connection with the insertion end 61 of the terminal 6. This double-sided elastic contact design not only provides excellent conductivity but also prevents cable loosening due to its strong mechanical clamping force, making it particularly suitable for harsh industrial and automotive environments requiring high current and mechanical stress, resulting in a significant improvement in the overall performance of the connector.

[0033] The connecting wire 7 is provided with a fixing jacket 71 and a tightening jacket 72. The fixing jacket 71 is located at the connection part 25, and the tightening jacket 72 is used to cover the contact part 52, the fixing jacket 71, and the connecting wire 7. In this embodiment, through the coordinated cooperation of the fixing jacket 71 and the tightening jacket 72, a multi-layered and highly reliable mechanical locking and stress relief is achieved between the connecting wire 7 and the connector contact part 52. The fixing jacket 71, located at the connection part 25, provides initial positioning and basic support for the connecting wire 7. The tightening jacket 72 integrally covers the contact part 52, the fixing jacket 71, and the tail of the connecting wire 7, generating a strong clamping force through radial contraction, forming a triple fastening structure. This ensures that the electrical connection between the contact part 52 and the conductor of the connecting wire 7 will not loosen due to external pulling, greatly improving the long-term stability of the electrical connection; it effectively disperses and isolates the bending stress of the cable in the area of ​​the tightening jacket 72, preventing it from being directly transmitted to the vulnerable electrical connection point, and enhancing the resistance to tension, torsion, and fatigue.

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bidirectional waterproof connector, characterized in that: The device includes a plug-in housing, an alloy housing, a first insulator, a second insulator, plug-in terminals, wiring terminals, and connecting wires. The plug-in housing is disposed outside the alloy housing. The alloy housing has a first fixed cavity and a second fixed cavity, which are perpendicularly connected. One end of the first fixed cavity has a plug-in cavity. The first insulator is disposed in the first fixed cavity, with one end extending into the plug-in cavity and the other end extending into the second fixed cavity. The second insulator is disposed in the second fixed cavity and has a power-connecting cavity. The wiring terminal is disposed in the power-connecting cavity. The plug-in terminal is disposed in the first insulator, with one end extending into the power-connecting cavity and connected to the wiring terminal. The connecting wire is connected to one end of the wiring terminal. The alloy shell is provided with a plug-in sleeve and a wiring part. The plug-in sleeve and the wiring part are vertically connected. The plug-in sleeve is provided with a sealing mounting groove outside the plug-in cavity. A first sealing ring is installed on the sealing mounting groove. Multiple sealing lips are provided on the outer periphery of the first sealing ring. The plug-in outer shell is provided with a mating cavity. The inner wall of the mating cavity faces the sealing lips. The alloy shell has an assembly groove at the top of the second fixing cavity, one end of the second fixing cavity is connected to the assembly groove, and the second insulator is installed into the second fixing cavity from the assembly groove; the assembly groove has a sealing groove on the outer periphery of the second fixing cavity, a second sealing ring is installed in the sealing groove, and a sealing cover plate is installed in the assembly groove, the sealing cover plate is used to cooperate with the second sealing ring to seal the assembly groove.

2. The bidirectional waterproof connector according to claim 1, characterized in that: The plug-in housing is provided with a connecting buckle, and the plug-in sleeve is provided with a connecting slot on one side of the sealing mounting groove. The connecting buckle is engaged in the connecting slot. The outer periphery of the plug-in sleeve is provided with a limiting protrusion ring, which is used to limit the connection buckle.

3. The bidirectional waterproof connector according to claim 1, characterized in that: A locking buckle is provided on one side of the plug-in housing. The locking buckle is provided with a locking slot and a locking groove. The locking slot is located below the locking groove. A pressing part extends from one side of the locking buckle, and one side of the pressing part extends backward. The plug-in cavity is provided with a positioning groove, which is opposite to the locking groove.

4. The bidirectional waterproof connector according to claim 1, characterized in that: The insertion cavity and the first fixing cavity are sequentially arranged in the insertion sleeve, and the second fixing cavity is arranged in the wiring part; the connecting wire is arranged in the wiring part and connected to the wiring terminal; the wiring terminal is inserted into the second fixing cavity of the second insulator from the bottom of the wiring part.

5. The bidirectional waterproof connector according to claim 1, characterized in that: The insertion cavity is provided with an electrical connection sleeve, and the two ends of the electrical connection sleeve are respectively provided with an electrical connection end and an electrical connection plug end. The electrical connection end is provided on the first insulator, and the electrical connection plug end extends to the port of the first fixed cavity.

6. The bidirectional waterproof connector according to claim 5, characterized in that: The power connection end is provided with a limiting inner ring, and the first insulator is provided with a backstop step. The limiting inner ring is used to abut against the backstop step and to prevent the power connection sleeve from retracting. The inner circumference of the electrical connection end is provided with an electrical contact spring, which is used to make contact with the connector to conduct electricity and generate friction.

7. The bidirectional waterproof connector according to claim 1, characterized in that: The second insulator has an assembly plane on the side facing the first fixing cavity, and the assembly plane has an assembly slot. One end of the first insulator is inserted into the assembly slot and extends to the electrical connection cavity.

8. The bidirectional waterproof connector according to claim 1, characterized in that: The two ends of the plug terminal are respectively provided with a mating part and a power receiving part. The mating part extends into the plug cavity, and the power receiving part extends into the power receiving cavity and is connected to the wiring terminal.

9. The bidirectional waterproof connector according to claim 8, characterized in that: The mating part is provided with a mating hole and a groove. The groove is used to cut the mating hole into two halves so as to generate tension force when mating. The electrical connection part is provided with electrical connection clips. Two electrical connection clips are arranged opposite each other and a mating groove is formed between the two electrical connection clips. The terminal is provided with an insertion end, which is inserted into the mating groove.

10. The bidirectional waterproof connector according to claim 1, characterized in that: The connecting wire is provided with a fixed jacket and a tightening jacket. The fixed jacket is located at the connection point, and the tightening jacket is used to cover the connection point, the fixed jacket, and the connecting wire.

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