Power connector with sealing mechanism
Patent Information
- Application Number
- CN202522359015.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-06
AI Technical Summary
[0003]针对现有技术的不足，本实用新型提供了一种具有密封机构的电源连接器，解决了上述密封不足、对接不准以及线管与接头衔接处缺乏应力缓冲等问题
首先，该电源连接器通过多重密封结构实现优异的密封效果，一方面，公头的环形凸台外侧壁套设的环形密封圈，在公头与母头对接固定时，能与母头大圆柱段的端面紧密抵接，形成第一重密封，有效阻挡外部灰尘、水汽等杂质进入连接器内部，另一方面，母头环形槽的槽底嵌装的环形密封圈，会与公头环形凸台的前端面紧密抵接，形成第二重密封，进一步增强密封防护能力，避免杂质影响内部接线结构的导电性能，保障连接器在潮湿、多尘等复杂环境下稳定工作，延长使用寿命，其次，母头环形槽的槽底设置有波形弹簧和弹性预紧环，在公头与母头对接过程中，波形弹簧始终处于压缩状态，通过弹性预紧环向环形密封圈施加持续的轴向预紧力，这种设计能确保环形密封圈始终与公头环形凸台的前端面以及母头环形槽的槽底壁保持紧密挤压状态，即便在长期使用过程中密封圈出现轻微磨损，或因环境温度变化导致部件热胀冷缩，也能依靠预紧力维持良好的密封效果，避免密封性能下降，保障密封的长期稳定性，然后，公头小圆柱段与线管的衔接处、母头小圆柱段与线管的衔接处均套设有金属波纹管，金属波纹管一端与对应圆柱段焊接固定，另一端通过卡箍与线管外侧壁固定连接，这种结构能对穿设在线管内并与接线结构连接的导线起到良好的防护作用，在导线受到拉扯或设备运行产生振动时，金属波纹管可通过自身的弹性形变缓解导线所承受的应力，避免导线因长期应力作用出现断裂、磨损等损伤，保障导线的完整性，确保电流传输的连续性，最后，母头圆柱台远离环形槽槽底的端面边缘开设倒角形成导向锥面，在公头与母头对接过程中，导向锥面能引导公头的环形凸台精准插入母头的环形槽内，避免因对接偏差导致环形凸台与环形槽错位，同时防止环形密封圈被环形凸台挤压倾斜或错位，保障密封结构的完整性和对接的顺畅性，降低安装难度，提升安装效率，尤其便于在空间狭小或视线不佳的安装场景中操作。
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Figure CN224862528U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power connector manufacturing, specifically a power connector with a sealing mechanism. Background Technology
[0002] In fields such as industrial equipment, new energy vehicles, and communication base stations, power connectors, as key interface components for power transmission, directly determine the stability and security of the entire power system. With the increasing complexity of application scenarios, such as humid outdoor environments, frequently vibrating mechanical equipment, and high-dust industrial workshops, traditional power connectors have gradually exposed many technical shortcomings, making it difficult to meet stringent usage requirements. Traditional power connectors often employ a single-seal structure, typically with a single-layer sealing ring only on the mating surfaces of the male and female connectors. This results in poor sealing reliability. During long-term use, factors such as vibration and impact can cause the sealing ring to deform or loosen, allowing external moisture, dust, and other impurities to penetrate the connector, potentially leading to… Oxidation and corrosion of the terminals can cause poor circuit contact, and in severe cases, even lead to short circuits, equipment shutdowns, and other safety accidents, posing a great threat to the continuous operation of the power system. At the same time, the male and female connector mating structures of traditional connectors lack precise guiding designs. During manual or mechanical mating, the protruding part of the male connector is prone to misalignment with the groove of the female connector, which not only increases the difficulty of mating but may also squeeze and damage the sealing ring, further impairing the sealing performance. In addition, traditional connectors lack effective stress buffer structures at the connection between the wire conduit and the connector. When the wire is pulled or the equipment vibrates, the stress is directly transmitted to the terminal, which can easily cause the connection point between the wire and the terminal to fall off or the insulation layer of the wire to be damaged, affecting the stability of power transmission. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a power connector with a sealing mechanism, which solves the problems of insufficient sealing, inaccurate mating, and lack of stress buffering at the connection between the conduit and the connector.
[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a power connector with a sealing mechanism, comprising: The male connector has a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section that are coaxially and fixedly connected at the front and rear. The front end face of the large cylindrical section of the male connector has a coaxially arranged annular boss. The cross-sectional area of the annular boss is smaller than that of the large cylindrical section of the male connector. Multiple sets of connectors are opened inside the annular boss along its axial direction. An annular sealing ring is fitted on the outer wall of the annular boss near the front end face of the large cylindrical section of the male connector. The rear end face of the sealing ring is tightly fitted with the front end face of the large cylindrical section of the male connector, and the inner side wall of the sealing ring is tightly fitted with the outer side wall of the annular boss. A No. 1 conduit is coaxially and fixedly connected to the end of the small cylindrical section of the male connector away from the large cylindrical section. The No. 1 conduit is used to pass through the wires connected to the connectors. The female connector is also designed as a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section coaxially and fixedly connected at the front and rear. The outer diameters of the large and small cylindrical sections of the male connector are equal to the outer diameters of the large and small cylindrical sections of the female connector, respectively. An embedded annular groove is coaxially formed along the axis of the large cylindrical section of the female connector near the male connector. The size of the annular groove matches the size of the annular boss of the male connector, and the annular groove creates a coaxial cylinder inside the large cylindrical section of the female connector. The cylindrical platform has multiple sets of wiring slots along its circumferential axis on the end face near the opening of the annular groove. The number and position of the wiring slots correspond one-to-one with the wiring head of the male connector, and the size of the wiring slots is adapted to the wiring head. When the male connector and the female connector are connected, the annular boss and the annular groove are coaxially engaged, and the wiring head and the corresponding wiring slot are coaxially engaged. The end of the small cylindrical section of the female connector away from the large cylindrical section is coaxially fixedly connected to a No. 2 conduit. The No. 2 conduit is used to pass through the wires that are connected to the conductive structure in the wiring slot. The clamp has two sets, both of which are semi-circular rings. The two sets of clamps together form a circular hoop that matches the outer diameter of the male and female large cylindrical sections. The clamp is fitted onto the outside of the joint between the male and female large cylindrical sections. Both ends of the two sets of clamps have corresponding threaded holes. Bolts are passed through the corresponding threaded holes of the two sets of clamps and locked with nuts for detachable and fixed connection of the male and female heads.
[0005] Preferably, when the male and female heads are connected and fixed, the end face of the large cylindrical section of the female head near the male head is in close contact with the front end face of the sealing ring of the male head, forming the first sealing structure.
[0006] Preferably, an annular sealing ring II is coaxially embedded in the bottom of the annular groove on the female head. The outer wall of the sealing ring II is tightly fitted with the inner wall of the annular groove, and the rear end face of the sealing ring II is in contact with the bottom of the annular groove. When the male head and the female head are connected, the front end face of the annular boss on the male head away from the large cylindrical section is tightly abutted with the front end face of the sealing ring II, forming a second sealing structure.
[0007] Preferably, an embedded annular groove 2 is coaxially formed on the bottom of the annular groove on the female head and behind the sealing ring 2. The cavity size of the annular groove 2 is smaller than the size of the sealing ring 2. A set of wave springs is coaxially fixedly connected to the bottom of the annular groove 2. An elastic preload ring is provided at the opening of the annular groove 2. The outer wall of the elastic preload ring slides against the inner wall of the annular groove 2. One end of the wave spring is coaxially fixedly connected to the bottom of the annular groove 2, and the other end is coaxially fixedly connected to one end of the elastic preload ring. The other end of the elastic preload ring is tightly abutted against the rear end face of the sealing ring 2. When the male head and the female head are connected, the wave spring is always in a compressed state, which is used to apply axial preload force to the sealing ring 2 by the elastic preload ring, so that the sealing ring 2 always maintains a tight compression state with the front end face of the annular boss and the bottom wall of the annular groove.
[0008] Preferably, a metal corrugated tube is fitted at the connection between the male small cylindrical section and the No. 1 conduit. One end of the metal corrugated tube is coaxially welded and fixed to the end of the male small cylindrical section away from the large cylindrical section, and the other end extends into the No. 1 conduit and is fixedly connected to the outer wall of the No. 1 conduit by a clamp. A metal corrugated tube is fitted at the connection between the female small cylindrical section and the No. 2 conduit. One end of the metal corrugated tube is coaxially welded and fixed to the end of the female small cylindrical section away from the large cylindrical section, and the other end extends into the No. 2 conduit and is fixedly connected to the outer wall of the No. 2 conduit by a clamp. Both the metal corrugated tube and the metal corrugated tube are used to relieve the stress caused by the pulling and vibration of the conductor.
[0009] Preferably, the end face edge of the cylindrical platform on the female head away from the bottom of the annular groove is chamfered to form a guide cone surface. The small diameter end of the guide cone surface is connected to the end face edge of the cylindrical platform, and the large diameter end extends towards the bottom of the cylindrical platform. When the male head and the female head are connected, the guide cone surface is used to guide the annular boss to be accurately inserted into the annular groove, preventing the sealing ring II from being squeezed, tilted or misaligned by the annular boss.
[0010] Preferably, the inner sidewall of the clamp is provided with anti-slip texture along its circumference. The anti-slip texture is serrated. When the clamp fixes the male and female heads, the anti-slip texture is closely fitted with the outer sidewall of the large cylindrical section of the male head and the large cylindrical section of the female head. The anti-slip texture is used to prevent the clamp from sliding along the axial direction.
[0011] Compared with the prior art, this utility model provides a power connector with a sealing mechanism, which has the following advantages: Firstly, this power connector achieves excellent sealing through a multi-layered sealing structure. On one hand, the annular sealing ring fitted on the outer wall of the male connector's annular boss tightly abuts against the end face of the large cylindrical section of the female connector when the male and female connectors are mated and fixed together, forming the first layer of sealing. This effectively prevents external dust, moisture, and other impurities from entering the connector. On the other hand, the annular sealing ring embedded at the bottom of the female connector's annular groove tightly abuts against the front face of the male connector's annular boss, forming the second layer of sealing. This further enhances the sealing and protection capabilities, preventing impurities from affecting the conductivity of the internal wiring structure and ensuring the connector's performance in humid conditions. It operates stably in complex environments such as humid and dusty conditions, extending its service life. Secondly, the bottom of the female annular groove is equipped with a wave spring and an elastic preload ring. During the mating process between the male and female heads, the wave spring remains compressed, while the elastic preload ring applies a continuous axial preload force to the annular seal. This design ensures that the annular seal remains tightly pressed against the front face of the male annular boss and the bottom wall of the female annular groove. Even if the seal experiences slight wear during long-term use, or if the components expand and contract due to temperature changes, the preload force maintains a good seal. To ensure a good seal and prevent degradation of sealing performance, thus guaranteeing long-term sealing stability, metal corrugated tubes are fitted at both the male and female cylindrical sections of the connector and the conduit. One end of the corrugated tube is welded to the corresponding cylindrical section, and the other end is fixed to the outer wall of the conduit via a clamp. This structure provides excellent protection for the wires running through the conduit and connected to the wiring structure. When the wires are stretched or vibrate during equipment operation, the metal corrugated tube can alleviate the stress on the wires through its elastic deformation, preventing breakage due to long-term stress. To prevent wear and tear and ensure the integrity of the conductors and the continuity of current transmission, the female cylindrical platform has a chamfered edge on the end face away from the bottom of the annular groove to form a guide cone surface. During the docking process between the male and female connectors, the guide cone surface can guide the annular boss of the male connector to accurately insert into the annular groove of the female connector, avoiding misalignment of the annular boss and the annular groove due to docking deviation. At the same time, it prevents the annular sealing ring from being squeezed, tilted or misaligned by the annular boss, ensuring the integrity of the sealing structure and the smoothness of docking, reducing installation difficulty, improving installation efficiency, and making it especially convenient for operation in installation scenarios with limited space or poor visibility. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the female connector during connection. Figure 3 This is an exploded view of the structure of this utility model; Figure 4 This is a schematic diagram of the male connector structure of this utility model; Figure 5This is a schematic diagram of the female head structure of this utility model.
[0013] In the diagram: 1. Male connector; 2. Annular boss; 3. Terminal; 4. Sealing ring one; 5. No. 1 conduit; 6. Female connector; 7. Annular groove; 8. Cylindrical platform; 9. Terminal groove; 10. No. 2 conduit; 11. Clamp; 12. Threaded hole; 13. Sealing ring two; 14. Wave spring; 15. Elastic preload ring; 16. Metal bellows one; 17. Metal bellows two; 18. Guide cone. Detailed Implementation
[0014] 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.
[0015] Please see Figure 1-5 This utility model provides a technical solution: A power connector with a sealing mechanism, comprising: Male connector 1 has a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section coaxially and fixedly connected. An annular boss 2 is coaxially provided on the front end face of the large cylindrical section of male connector 1. The cross-sectional area of the annular boss 2 is smaller than that of the large cylindrical section of male connector 1. Multiple sets of connectors 3 are formed inside the annular boss 2 along its axial direction. An annular sealing ring 4 is fitted on the outer wall of the annular boss 2 near the front end face of the large cylindrical section of male connector 1. The rear end face of the sealing ring 4 is tightly fitted to the front end face of the large cylindrical section of male connector 1. The inner wall of the sealing ring 4 fits tightly against the outer wall of the annular boss 2. The end of the small cylindrical section of the male head 1 away from the large cylindrical section is coaxially fixedly connected to the No. 1 wire tube 5. The No. 1 wire tube 5 is used to pass through the wire connected to the connector 3. The core function of the sealing ring 4 is to form the first sealing structure. When the male head 1 and the female head 6 are mated and fixed, the end face of the large cylindrical section of the female head 6 near the male head 1 will tightly abut against the front face of the sealing ring 4, preventing external dust, moisture and other impurities from entering the connector from the gap between the end faces of the male head 1 and the female head 6. The female head 6 is also designed as a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section coaxially and fixedly connected at the front and rear. The outer diameters of the large and small cylindrical sections of the male head 1 are equal to the outer diameters of the large and small cylindrical sections of the female head 6, respectively. An embedded annular groove 7 is coaxially formed along the axis of the large cylindrical section of the female head 6 near the male head 1. The size of the annular groove 7 matches the size of the annular boss 2 of the male head 1, and the annular groove 7 creates a coaxial cylindrical platform 8 inside the large cylindrical section of the female head 6. Multiple sets of wiring slots 9 are opened along the circumferential direction of the axis of the end face of the column 8 near the opening of the annular groove 7. The number and position of the wiring slots 9 correspond one-to-one with the wiring head 3 of the male connector 1, and the size of the wiring slot 9 is adapted to the wiring head 3. When the male connector 1 and the female connector 6 are connected, the annular boss 2 and the annular groove 7 are coaxially engaged, and at the same time, the wiring head 3 and the corresponding wiring slot 9 are coaxially engaged. The end of the small cylindrical section of the female connector 6 away from the large cylindrical section is coaxially fixedly connected to the second conduit 10. The second conduit 10 is used to pass through the wires connected to the conductive structure in the wiring slot 9. The clamp 11 is provided in two sets, both sets of clamp 11 are semi-circular rings, and the two sets of clamp 11 together form a circular hoop body that is adapted to the outer diameter of the large cylindrical section of the male head 1 and the large cylindrical section of the female head 6. The clamp 11 is fitted on the outside of the connection between the large cylindrical section of the male head 1 and the large cylindrical section of the female head 6. Both ends of the two sets of clamp 11 are provided with threaded holes 12. Bolts are passed through the threaded holes 12 at the corresponding ends of the two sets of clamp 11 and locked with nuts for detachable fixed connection between the male head 1 and the female head 6.
[0016] Furthermore, when the male connector 1 and the female connector 6 are connected and fixed, the end face of the large cylindrical section of the female connector 6 near the male connector 1 is in close contact with the front end face of the sealing ring 4 of the male connector 1, forming the first sealing structure.
[0017] Furthermore, an annular sealing ring 2 13 is coaxially embedded in the bottom of the annular groove 7 on the female head 6. The outer wall of the sealing ring 2 13 is tightly fitted with the inner wall of the annular groove 7, and the rear end face of the sealing ring 2 13 is in contact with the bottom of the annular groove 7. When the male head 1 and the female head 6 are connected, the front end face of the annular boss 2 on the male head 1 away from the large cylindrical section is tightly abutted with the front end face of the sealing ring 2 13, forming a second sealing structure. The core function of the sealing ring 2 13 is to form a second sealing structure. When the male head 1 and the female head 6 are connected, the front end face of the annular boss 2 on the male head 1 away from the large cylindrical section will be tightly abutted with the front end face of the sealing ring 2 13, further preventing impurities from entering from the gap between the annular boss 2 and the annular groove 7, thus improving the sealing level.
[0018] Furthermore, on the bottom of the annular groove 7 on the female head 6, and behind the sealing ring 13, an embedded annular groove 2 is coaxially formed along its axis. The size of the annular groove 2 is smaller than the size of the sealing ring 13. A set of wave springs 14 is coaxially fixedly connected to the bottom of the annular groove 2. An elastic preload ring 15 is provided at the opening of the annular groove 2. The outer side wall of the elastic preload ring 15 slides against the inner side wall of the annular groove 2. One end of the wave spring 14 is coaxially fixedly connected to the bottom of the annular groove 2, and the other end is coaxially fixedly connected to one end of the elastic preload ring 15. The other end of the elastic preload ring 15 is tightly abutted against the rear end face of the sealing ring 13. When the male head 1 and the female head 6 are connected, the wave spring 14 is always in a compressed state, used to tighten the elastic preload ring 15 towards the sealing ring. The second sealing ring 13 applies an axial preload, ensuring that it remains tightly pressed against the front face of the annular boss 2 and the bottom wall of the annular groove 7. The core function of the wave spring 14 is to provide the axial preload. When the male head 1 is connected to the female head 6, the wave spring 14 is always in a compressed state, applying a continuous axial thrust to the elastic preload ring 15 through its own elastic deformation. The core function of the elastic preload ring 15 is to transmit the preload of the wave spring 14, converting the axial thrust of the wave spring 14 into a compressive force on the second sealing ring 13, ensuring that the second sealing ring 13 remains tightly pressed against the front face of the annular boss 2 and the bottom wall of the annular groove 7. This ensures the long-term reliability of the second sealing structure and prevents sealing failure due to aging or loosening of the second sealing ring 13.
[0019] Furthermore, a metal corrugated tube 16 is fitted at the connection between the small cylindrical section of the male connector 1 and the first conduit 5. One end of the metal corrugated tube 16 is coaxially welded and fixed to the end of the small cylindrical section of the male connector 1 away from the large cylindrical section, and the other end extends towards the first conduit 5 and is fixedly connected to the outer wall of the first conduit 5 by a clamp. A metal corrugated tube 27 is fitted at the connection between the small cylindrical section of the female connector 6 and the second conduit 10. One end of the metal corrugated tube 217 is coaxially welded to the end of the small cylindrical section of the female connector 6 away from the large cylindrical section. One end is fixed, and the other end extends to the second conduit 10 and is fixedly connected to the outer wall of the second conduit 10 by a clamp. Both the first metal corrugated pipe 16 and the second metal corrugated pipe 17 are used to relieve the stress generated by the pulling and vibration of the wire. When the wire is pulled or the connector is vibrated, the first metal corrugated pipe 16 and the second metal corrugated pipe 17 can absorb the pulling force and vibration energy through their own deformation, so as to avoid the connection between the wire and the terminal 3 and the terminal groove 9 being damaged due to stress concentration, and protect the stability of the wire and the connection.
[0020] Furthermore, the end face edge of the cylindrical platform 8 on the female head 6 away from the bottom of the annular groove 7 is chamfered to form a guide cone surface 18. The small diameter end of the guide cone surface 18 is connected to the end face edge of the cylindrical platform 8, and the large diameter end extends towards the bottom of the cylindrical platform 8. When the male head 1 and the female head 6 are connected, the guide cone surface 18 is used to guide the annular boss 2 to be accurately inserted into the annular groove 7, preventing the sealing ring 2 13 from being squeezed, tilted or misaligned by the annular boss 2. When the male head 1 and the female head 6 are connected, the guide cone surface 18 can guide the annular boss 2 to be accurately inserted into the annular groove 7 along the cone surface direction, avoiding the annular boss 2 from shifting during insertion, thereby preventing the sealing ring 2 13 from being squeezed, tilted or misaligned by the annular boss 2, ensuring the accuracy of the connection and the sealing effect of the sealing ring 2 13.
[0021] Furthermore, the inner sidewall of the clamp 11 is provided with anti-slip texture along its circumference. The anti-slip texture is serrated. When the clamp 11 fixes the male head 1 and the female head 6, the anti-slip texture is closely fitted with the outer sidewall of the large cylindrical section of the male head 1 and the large cylindrical section of the female head 6. The anti-slip texture is used to prevent the clamp 11 from sliding along the axial direction.
[0022] Structural Description: Male connector 1: It has a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section that are fixed coaxially at the front and rear. It is the mating end of the power connector. It is equipped with an annular boss 2, a terminal block 3, and other structures. The end of the small cylindrical section is connected to the No. 1 conduit 5. Annular boss 2: It is coaxially set on the front end face of the large cylindrical section of the male head 1. Its cross-sectional area is smaller than that of the large cylindrical section of the male head 1. A wire head 3 is opened inside, and a sealing ring 4 is sleeved on the outer wall. When mating, it can be coaxially snapped with the annular groove 7 of the female head 6. Terminal 3: Multiple sets of structures are opened along the axis of the annular boss 2. Their positions and quantities correspond one-to-one with the wiring slots 9 of the female terminal 6. The dimensions are compatible. When the male terminal 1 and the female terminal 6 are connected, they can be coaxially inserted into the wiring slots 9 to achieve conductive connection. Sealing ring 4: It is fitted on the outer wall of the annular boss 2 and close to the front end face of the large cylindrical section of the male head 1. The rear end face is in close contact with the front end face of the large cylindrical section of the male head 1, and the inner side wall is in close contact with the outer wall of the annular boss 2. When the male head 1 and the female head 6 are connected and fixed, the front end face is in close contact with the end face of the large cylindrical section of the female head 6 close to the male head 1, forming the first sealing structure. Conduit 5: Coaxially fixed to the end of the small cylindrical section of male connector 1 away from the large cylindrical section, used to thread the wire connected to connector 3; Female connector 6: It has a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section that are fixed coaxially at the front and rear. The outer diameters of the large and small cylindrical sections are equal to the outer diameters of the corresponding cylindrical sections of the male connector 1. It is the mating end of the power connector. It is equipped with structures such as annular groove 7, cylindrical platform 8, and wiring groove 9. The end of the small cylindrical section is connected to the No. 2 conduit 10. Annular groove 7: An embedded structure coaxially opened along the axis of the large cylindrical section of the female head 6 near the end of the male head 1. The groove cavity size is adapted to the annular boss 2 of the male head 1. After opening, a cylindrical platform 8 is formed inside the large cylindrical section of the female head 6. A sealing ring 2 13 is embedded in the bottom of the groove and an annular groove 2 is opened. Cylindrical platform 8: The coaxial structure formed inside the large cylindrical section of the female head 6 by opening an annular groove 7, the end face near the opening of the annular groove 7 is provided with a wiring groove 9 along the circumferential direction of the axis, and the edge of the end face away from the bottom of the annular groove 7 is provided with a guide cone surface 18. Wiring groove 9: Multiple structures are opened on the end face of the cylindrical platform 8 near the opening of the annular groove 7. The number and position correspond one-to-one with the wiring head 3 of the male connector 1. The size is adapted and can be coaxially snapped with the mating wiring head 3. The internal conductive structure is provided. No. 2 conduit 10: It is coaxially fixed to the end of the small cylindrical section of the female head 6 away from the large cylindrical section, and is used to pass through the wires that are connected to the conductive structure in the wiring groove 9. Hoop 11: It is provided in two sets, both of which are semi-circular rings. When they are put together, they can form a circular hoop that is compatible with the outer diameter of the large cylindrical section of the male head 1 and the large cylindrical section of the female head 6. It is fitted on the outside of the connection between the large cylindrical sections of the male head 1 and the female head 6 for detachable and fixed connection. The inner wall is provided with anti-slip texture. Threaded hole 12: A hole-like structure corresponding to the two ends of the two sets of clamps 11, for bolts to pass through and lock with nuts to fix the two sets of clamps 11, thereby fixing the male head 1 and the female head 6; Sealing ring 2 13: A ring structure coaxially embedded in the bottom of the annular groove 7 of the female head 6. The outer side wall is tightly fitted with the inner side wall of the annular groove 7, and the rear end face is in contact with the bottom of the annular groove 7. When the male head 1 and the female head 6 are connected, the front end face is tightly abutted against the front end face of the annular boss 2 away from the large cylindrical section of the male head 1, forming a second sealing structure. Wave spring 14: A set of structures coaxially fixedly connected to the bottom of the second groove of the annular groove of the female head 6. When the male head 1 and the female head 6 are connected, the male head 1 is always in a compressed state, providing axial force for the elastic preload ring 15. Elastic preload ring 15: A structure set at the opening of the second annular groove of the female head 6. The outer side wall is slidably attached to the inner side wall of the second annular groove. One end is fixed to the wave spring 14 and the other end abuts against the rear end face of the second sealing ring 13. It can transmit the force of the wave spring 14 to the second sealing ring 13. Metal Corrugated Pipe 16: A structure fitted at the junction of the small cylindrical section of male connector 1 and the No. 1 conduit 5. One end is coaxially welded and fixed to the end of the small cylindrical section of male connector 1 away from the large cylindrical section, and the other end extends to the No. 1 conduit 5 and is fixed to the outer wall of the No. 1 conduit 5 through a clamp. It is used to relieve the stress caused by the pulling and vibration of the conductor. Metal Corrugated Pipe 2 17: A structure fitted at the junction of the small cylindrical section of the female head 6 and the No. 2 conduit 10. One end is coaxially welded and fixed to the end of the small cylindrical section of the female head 6 away from the large cylindrical section, and the other end extends to the No. 2 conduit 10 and is fixed to the outer wall of the No. 2 conduit 10 through a clamp. It is used to relieve the stress caused by the pulling and vibration of the conductor. Guide cone surface 18: The structure is formed by the chamfering of the end face edge of the female head 6 cylindrical platform 8 away from the bottom of the annular groove 7. The small diameter end is connected to the end face edge of the cylindrical platform 8, and the large diameter end extends towards the bottom of the cylindrical platform 8. When the male head 1 is connected to the female head 6, it can guide the annular boss 2 to be accurately inserted into the annular groove 7, preventing the sealing ring 2 13 from tilting or misaligning.
[0023] Working Principle: In the docking preparation stage, the wires connected to the electrical equipment or power supply are first threaded through the corresponding conduits. The wire connected to male connector 1 (connector 3) is threaded through conduit 5, extending through the internal channel of the small cylindrical section of male connector 1 to the annular boss 2, where it completes the conductive connection with connector 3. The wire connected to the conductive structure in the wiring groove 9 of female connector 6 is threaded through conduit 10, extending through the internal channel of the small cylindrical section of female connector 6 to the cylindrical platform 8, where it is fixed to the conductive component in the wiring groove 9. At this point, the conductive link between the wires and the connector is initially established, and conduits 5 and 10 provide initial limiting and protection for the wires at both ends. In the docking stage, the operator aligns male connector 1 and female connector 6 along the axis. At this point, the end face of the cylindrical platform 8 of female connector 6... The guide cone surface 18 at the edge plays a guiding role. Under the guidance of the guide cone surface 18, the annular boss 2 of the male connector 1 is precisely aligned with the annular groove 7 of the female connector 6, avoiding jamming caused by misalignment. As the male connector 1 and the female connector 6 continue to approach, the annular boss 2 gradually inserts into the annular groove 7. At the same time, the multiple sets of terminals 3 on the male connector 1 and the corresponding terminals 9 on the female connector 6 are synchronously and coaxially engaged. When the terminals 3 are fully inserted into the terminals 9, the conductive structures inside the two are in close contact, and the power transmission channel is officially connected, realizing the circuit connection between the power supply end and the power consumption end. After the docking is completed, a fixing operation is performed. Two sets of semi-circular clamps 11 are placed on the outside of the connection between the large cylindrical section of the male connector 1 and the large cylindrical section of the female connector 6, so that the two sets of clamps 11 enclose the cylindrical section. A circular clamp with an appropriate outer diameter is used. Bolts are then passed through the threaded holes 12 at both ends of the two clamps 11 and tightened gradually with nuts. During tightening, the radial clamping force of the clamps 11 on the male head 1 and female head 6 gradually increases until they are tightly fitted without any relative looseness. Simultaneously, the serrated anti-slip texture on the inner wall of the clamps 11 tightly engages with the outer walls of the large cylindrical sections of the male head 1 and female head 6, effectively preventing axial sliding of the clamps 11 during subsequent use. This ensures that the male head 1 and female head 6 always maintain a stable connection, providing mechanical support for the reliability of the sealing structure and conductive link. Furthermore, sealing is maintained throughout the entire working process. After the male head 1 and female head 6 are fixed by the clamps 11, the double sealing structure takes effect simultaneously. The first layer of sealing is achieved by the sealing ring 4, whose sleeve... Located on the outer wall of the annular boss 2, with its rear end face tightly fitted to the front end face of the large cylindrical section of the male head 1, the female head 6, under the clamping force of the clamping clamp 11, has its large cylindrical section end face near the male head 1 in close contact with the front end face of the sealing ring 4, forming the first barrier against external impurities. The second seal is achieved by the sealing ring 13 in conjunction with the wave spring 14 and the elastic preload ring 15. The sealing ring 13 is embedded in the bottom of the annular groove 7, with its outer wall fitted to the inner wall of the annular groove 7, and its rear end in close contact with the elastic preload ring 15. Under the continuous compression force of the wave spring 14, the elastic preload ring 15 always applies an axial thrust to the sealing ring 13, causing the front end face of the sealing ring 13 to be tightly pressed against the front end face of the annular boss 2 away from the large cylindrical section of the male head 1, forming the second sealing barrier.Even during long-term use, when temperature changes cause component expansion and contraction, or equipment vibration causes slight displacement, the elastic potential energy of the wave spring 14 can compensate for the minute deformation of the sealing ring 13 in real time through the elastic preload ring 15, ensuring that it always maintains a tight fit and a stable sealing effect. Furthermore, during connector operation, the metal bellows 16 and 17 continuously play a stress-buffering role. When the wire is subjected to external pulling force or vibration generated by equipment operation, the metal bellows 16 at the connection between the small cylindrical section of the male connector 1 and the first conduit 5, and the metal bellows 17 at the connection between the small cylindrical section of the female connector 6 and the second conduit 10, absorb the pulling force and vibration stress through their deformable characteristics. This prevents stress from being directly transmitted to the connection point between the connector 3 and the wire, and the connection point between the wiring groove 9 and the wire, preventing the connection from falling off or the wire insulation layer from being damaged, ensuring the integrity of the conductive link, and ultimately achieving long-term stable operation of the connector under complex working conditions.
[0024] 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 power connector with a sealing mechanism, characterized in that, include: The male connector (1) has a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section that are coaxially and fixedly connected at the front and rear. The front end face of the large cylindrical section of the male connector (1) is coaxially provided with an annular boss (2). Multiple sets of connectors (3) are opened inside the annular boss (2) along its axial direction. An annular sealing ring (4) is sleeved on the outer wall of the annular boss (2) near the front end face of the large cylindrical section of the male connector (1). A No. 1 conduit (5) is coaxially and fixedly connected to the end of the small cylindrical section of the male connector (1) away from the large cylindrical section. The female head (6) is also designed as a cylindrical boss structure, consisting of a large cylindrical section and a small cylindrical section that are coaxially and fixedly connected at the front and rear. The outer diameters of the large cylindrical section and the small cylindrical section of the male head (1) are equal to the outer diameters of the large cylindrical section and the small cylindrical section of the female head (6). An embedded annular groove (7) is provided along the axis of the end of the large cylindrical section of the female head (6) near the male head (1). The size of the groove (7) is adapted to the size of the annular boss (2) of the male head (1). The opening of the annular groove (7) makes the large cylindrical section of the female head (6) larger. The interior of the cylindrical section forms a coaxial cylindrical platform (8). Multiple sets of wiring slots (9) are opened in the circumferential direction on the end face of the cylindrical platform (8) near the opening of the annular groove (7). The number, position and size of the wiring slots (9) are matched with the wiring head (3) of the male connector (1). When the male connector (1) is connected to the female connector (6), the annular boss (2) is coaxially engaged with the annular groove (7), and at the same time, the wiring head (3) is coaxially engaged with the corresponding wiring slot (9). The end of the small cylindrical section of the female connector (6) away from the large cylindrical section is coaxially fixedly connected to the No. 2 conduit (10). The clamp (11) is provided in two sets. Both sets of clamps (11) are semi-circular rings. The two sets of clamps (11) together form a circular hoop that matches the outer diameter of the large cylindrical section of the male head (1) and the large cylindrical section of the female head (6). The clamp (11) is fitted on the outside of the connection between the large cylindrical section of the male head (1) and the large cylindrical section of the female head (6). Both ends of the two sets of clamps (11) are provided with threaded holes (12).
2. A power connector with a sealing mechanism according to claim 1, characterized in that, When the male head (1) and the female head (6) are connected and fixed, the end face of the large cylindrical section of the female head (6) close to the male head (1) is in close contact with the front end face of the sealing ring (4) of the male head (1), forming the first sealing structure.
3. A power connector with a sealing mechanism according to claim 2, characterized in that, An annular sealing ring 2 (13) is coaxially embedded in the bottom of the annular groove (7) on the female head (6). The outer side wall of the sealing ring 2 (13) is tightly fitted with the inner side wall of the annular groove (7), and the rear end face of the sealing ring 2 (13) is in contact with the bottom of the annular groove (7). When the male head (1) is connected to the female head (6), the front end face of the annular boss (2) on the male head (1) away from the large cylindrical section is tightly abutted with the front end face of the sealing ring 2 (13), forming a second sealing structure.
4. A power connector with a sealing mechanism according to claim 3, characterized in that, An embedded annular groove 2 is provided at the bottom of the annular groove (7). The size of the annular groove 2 is smaller than the size of the sealing ring 2 (13). A set of wave springs (14) is coaxially fixedly connected to the bottom of the annular groove 2. An elastic pre-tightening ring (15) is provided at the opening of the annular groove 2. One end of the wave spring (14) is coaxially fixedly connected to the bottom of the annular groove 2, and the other end is fixedly connected to the elastic pre-tightening ring (15).
5. A power connector with a sealing mechanism according to claim 4, characterized in that, A metal corrugated pipe (16) is fitted at the junction of the small cylindrical section of the male connector (1) and the first conduit (5). One end of the metal corrugated pipe (16) is coaxially welded to the end of the small cylindrical section of the male connector (1) away from the large cylindrical section, and the other end extends to the first conduit (5) and is fixedly connected to the outer wall of the first conduit (5) by a clamp. A metal corrugated pipe (17) is fitted at the junction of the small cylindrical section of the female connector (6) and the second conduit (10). One end of the metal corrugated pipe (17) is coaxially welded to the end of the small cylindrical section of the female connector (6) away from the large cylindrical section, and the other end extends to the second conduit (10) and is fixedly connected to the outer wall of the second conduit (10) by a clamp.
6. A power connector with a sealing mechanism according to claim 5, characterized in that, The cylindrical platform (8) on the female head (6) has a chamfer on the edge of the end face away from the bottom of the annular groove (7) to form a guide cone surface (18).
7. A power connector with a sealing mechanism according to claim 1, characterized in that, The inner sidewall of the clamp (11) is provided with anti-slip texture along its circumference. When the clamp (11) fixes the male head (1) and the female head (6), the anti-slip texture is closely attached to the outer sidewall of the large cylindrical section of the male head (1) and the large cylindrical section of the female head (6).