Energy storage connector assembly

Abstract

The utility model relates to the technical field of energy storage electric connection, in particular to an energy storage connector assembly, which comprises a board end connector and a wire end connector, the board end connector is provided with a board end plug and a board end electric connection element, the board end plug is provided with a board end plugging cavity, the board end electric connection element is arranged in the board end plugging cavity, and the wire end connector is connected with the board end plug. The wire end connector is provided with a wire end plugging cavity, a wire end plug is arranged in the wire end plugging cavity, the wire end plugging cavity is used for being matched with the board end plug, the wire end plug is provided with a wire end electric connection element, and the board end electric connection element is used for being matched with the wire end plug and being in conductive contact with the wire end electric connection element; a locking assembly is arranged on one side of the wire end plug and comprises a locking cavity, a locking sliding block and a spring bolt. According to the utility model, through efficient electrical connection performance and a stable and reliable locking mechanism, a high-performance connection solution is provided for an energy storage system.

Description

Technical Field

[0001] This utility model relates to the field of energy storage electrical connection technology, and in particular to an energy storage connector assembly. Background Technology

[0002] An energy storage connector is a connector specifically designed for connecting and transmitting electrical energy. Its main functions are to provide current transmission, voltage distribution, and partial protection for the system's battery pack. It needs to withstand high voltage and high current while maintaining sufficiently low contact resistance to ensure stable current transmission, low energy consumption, and improve the overall efficiency of the energy storage system.

[0003] In the prior art, Chinese patent application number CN202110585300.0 discloses a 360° rotatable plug-in energy storage connector, which features multiple sets of mating convex keys and keyways. Through the guidance of a guide angle and the relative rotation of the front cover, the socket and plug can be plugged in at any angle, facilitating electrical connection. However, existing energy storage connectors are prone to structural instability issues after plugging, thus requiring a locking mechanism. But existing locking mechanisms have poor stability during locking, necessitating new improvements to the existing energy storage connector structure. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a high-performance connection solution for energy storage systems through efficient electrical connection performance and a robust and reliable locking mechanism. It not only optimizes energy transmission efficiency but also enhances the stability and security of the system's energy storage connector assembly.

[0005] The technical solution adopted by this utility model is: an energy storage connector assembly, including a board-end connector and a wire-end connector. The board-end connector is provided with a board-end plug and a board-end electrical contact element. The board-end plug is provided with a board-end insertion cavity, and the board-end electrical contact element is disposed within the board-end insertion cavity. The wire-end connector is provided with a wire-end insertion cavity, and a wire-end plug is disposed within the wire-end insertion cavity. The wire-end insertion cavity is used to mate with the board-end plug, and the wire-end plug is provided with a wire-end electrical contact element. The board-end electrical contact element is used to mate with the wire-end plug. The plug is electrically connected to the wire end connector; a locking assembly is provided on one side of the wire end plug, the locking assembly includes a locking cavity, a locking slider and a locking tongue, the locking slider is slidably disposed in the locking cavity, one end of the locking tongue is vertically disposed on the locking slider, the locking tongue is provided with a first locking bevel and a second locking bevel, the first locking bevel and the second locking bevel are connected in cross-section, the outer periphery of the plate end plug is provided with a locking groove, the locking tongue is used to cooperate with the locking groove to fix the plate end plug in the wire end plug cavity.

[0006] A further improvement to the above solution is that the board-end connector is provided with a board-end housing, the board-end plug is provided on one side of the board-end housing, the board-end housing is provided with a mounting panel, one side of the mounting panel is provided with a sealing groove, and the sealing groove is provided with a sealing element.

[0007] A further improvement to the above solution is that the plate end housing is provided with a plate end fixing part, the plate end electrical connection element is provided with an injection molding fixing part and a plate end wiring part, the injection molding fixing part is located inside the plate end fixing part, and the plate end wiring part extends to the outside of the injection molding fixing part; a clearance groove is provided on the outer side of the plate end fixing part.

[0008] A further improvement to the above solution is that the board-end electrical component is provided with a plug-in positioning hole, and the wire-end plug-in cavity is provided with a plug-in positioning post. The plug-in positioning post is used to cooperate with the plug-in positioning hole for positioning and guidance when the board-end connector and the wire-end connector are plugged in.

[0009] A further improvement to the above solution is that an insulating anti-collision ring is provided at the port of the board-end electrical component located at the insertion positioning hole.

[0010] A further improvement to the above scheme is that a tight-fitting rib is provided on the outer periphery of the insertion positioning post, and the tight-fitting rib is used to tightly fit the insertion positioning post with the insertion positioning hole.

[0011] A further improvement to the above solution is that the outer periphery of the board-end plug is provided with positioning ribs, and the outer periphery of the wire-end plug cavity is provided with positioning grooves. The positioning ribs are used to cooperate with the positioning grooves so that the board-end connector and the wire-end connector are fixed and cannot be rotated when they are plugged in.

[0012] A further improvement to the above solution is that a sealing ring groove is provided at the port of the wire end plug, a sealing ring is provided in the sealing ring groove, and a sealing step is provided in the board end plug cavity. The sealing step is used to cooperate with the sealing ring to seal the board end connector and the wire end connector when they are plugged in.

[0013] A further improvement to the above solution is that the wire connector is provided with a wire end fixing part and a wiring part, the wire end fixing part is provided with a fixed power connection element, one end of the fixed power connection element is connected to the wire end power connection element, and one end of the wire end power connection element extends toward the wiring part.

[0014] A further improvement to the above solution is that the wiring part is provided with a sealing ring, a locking sleeve and a threaded sleeve, one end of the threaded sleeve is threadedly connected to the wire end fixing part, and the sealing ring and the locking sleeve are sequentially arranged inside the threaded sleeve.

[0015] The beneficial effects of this utility model are:

[0016] Compared to existing energy storage connectors, this invention achieves efficient and reliable electrical connections through a board-end connector and a wire-end connector structure. The board-end connector, equipped with a board-end plug and board-end electrical contact element, and the wire-end connector, with its wire-end insertion cavity and wire-end plug, ensure a short and stable current transmission path. In particular, the precise fit between the board-end and wire-end electrical contact elements achieves low-resistance, high-conductivity contact, effectively reducing energy loss and improving the overall efficiency of the energy storage system. Secondly, the locking assembly greatly enhances the stability of the connection. The flexible sliding of the locking slider within the locking cavity, combined with the cleverly designed first and second locking bevels on the locking tongue, allows the locking tongue to smoothly engage in the locking groove on the outer periphery of the board-end plug. This design not only simplifies the installation process but also ensures that the connector maintains a stable connection even under external forces, effectively preventing loosening due to vibration or accidental collisions, thereby improving the system's safety and reliability. The first and second locking bevels ensure that the latch does not generate a component force that moves to one side, thus guaranteeing the connector's holding force. Furthermore, the double-beveled design of the locking tongue not only facilitates locking operations but also provides convenience and flexibility during unlocking. When disconnection is required, the locking tongue can be smoothly slid out of the locking groove along the bevels through appropriate operation, achieving a fast and secure unlocking mechanism that meets the needs of rapid response and maintenance. This invention provides a high-performance connection solution for energy storage systems through efficient electrical connection performance and a robust and reliable locking mechanism. It not only optimizes energy transmission efficiency and enhances system stability and security but also simplifies installation and maintenance processes. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the energy storage connector assembly of this utility model;

[0018] Figure 2 for Figure 1 Exploded view of the energy storage connector assembly;

[0019] Figure 3 for Figure 1 Front view schematic diagram of the energy storage connector assembly;

[0020] Figure 4 for Figure 3 Sectional view of AA;

[0021] Figure 5 for Figure 4 Enlarged diagram of point A in the diagram;

[0022] Figure 6 for Figure 1 Internal structure diagram of the energy storage connector assembly;

[0023] Figure 7for Figure 1 Schematic diagrams of different embodiments of the energy storage connector assembly;

[0024] Figure 8 for Figure 1 Schematic diagrams of different embodiments of the energy storage connector assembly.

[0025] Explanation of reference numerals in the attached drawings: 10 for board end connector, 20 for wire end connector, 1 for board end plug, 11 for locking groove, 12 for board end housing, 121 for board end fixing part, 122 for clearance groove, 13 for mounting panel, 14 for sealing element, 15 for positioning rib, 2 for board end electrical connection element, 21 for injection molding fixing part, 22 for board end wiring part, 23 for plug-in positioning hole, 24 for insulating anti-collision ring, 3 for board end plug-in cavity, 31 for sealing step, 41 for wire end plug-in cavity, 41 for plug-in positioning post, 411 for tight fitting rib, 42 for positioning groove, 5 for wire end plug, 51 for sealing ring groove, 52 for sealing ring, 53 for wiring part, 54 for sealing ring, 542 for locking sleeve, 543 for threaded sleeve, 55 for fixing electrical connection element, 6 for wire end electrical connection element, 7 for locking assembly, 71 for locking cavity, 72 for locking slider, 73 for locking tongue, 731 for first locking bevel, 732 for second locking bevel. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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 1-8As shown in one embodiment of the present invention, an energy storage connector assembly includes a board-end connector 10 and a wire-end connector 20. The board-end connector 10 is provided with a board-end plug 1 and a board-end electrical contact element 2. The board-end plug 1 is provided with a board-end insertion cavity 3, and the board-end electrical contact element 2 is disposed within the board-end insertion cavity 3. The wire-end connector 20 is provided with a wire-end insertion cavity 4, and a wire-end plug 5 is disposed within the wire-end insertion cavity 4. The wire-end insertion cavity 4 is used to mate with the board-end plug 1. The wire-end plug 5 is provided with a wire-end electrical contact element 6, and the board-end electrical contact element 2 is used to mate with the wire-end plug 5 and connect to the wire end. Electrical component 6 makes conductive contact; a locking assembly 7 is provided on one side of the wire-end plug 5. The locking assembly 7 includes a locking cavity 71, a locking slider 72, and a locking tongue 73. The locking slider 72 is slidably disposed in the locking cavity 71. One end of the locking tongue 73 is vertically disposed on the locking slider 72. The locking tongue 73 is provided with a first locking bevel 731 and a second locking bevel 732. The first locking bevel 731 and the second locking bevel 732 are connected cross-sectionly. A locking groove 11 is provided on the outer periphery of the board-end plug 1. The locking tongue 73 is used to cooperate with the locking groove 11 to fix the board-end plug 1 in the wire-end insertion cavity 4. This embodiment achieves efficient and reliable electrical connection through the structure of the board-end connector 10 and the wire-end connector 20. The board-end connector 10 is equipped with the board-end plug 1 and the board-end electrical component 2, and the wire-end insertion cavity 4 and the wire-end plug 5 in the wire-end connector 20 ensure a short and stable current transmission path. In particular, the precise fit between the board-end electrical component 2 and the wire-end electrical component 6 achieves low-resistance, high-conductivity contact, effectively reducing energy loss and improving the overall efficiency of the energy storage system. Secondly, the locking assembly 7 greatly enhances the stability of the connection. The flexible sliding of the locking slider 72 within the locking cavity 71, combined with the cleverly designed first and second locking bevels 731 and 732 on the locking tongue 73, allows the locking tongue 73 to smoothly engage with the locking groove 11 on the outer periphery of the board-end plug 1. This design not only simplifies the installation process but also ensures that the connector maintains a stable connection even under external force, effectively preventing loosening due to vibration or accidental collisions, thereby improving the system's safety and reliability. The first and second locking bevels 731 and 732 ensure that the latch does not generate a component force that moves to one side, thus ensuring good connector retention force. Furthermore, the double-bevel design of the locking tongue 73 not only facilitates locking operations but also provides convenience and flexibility during unlocking. When disconnection is required, the locking tongue 73 can be smoothly slid out of the locking groove 11 along the inclined surface through appropriate operation, realizing a fast and secure unlocking mechanism that meets the needs of rapid response and maintenance. This embodiment provides a high-performance connection solution for energy storage systems through efficient electrical connection performance and a robust and reliable locking mechanism. It not only optimizes energy transmission efficiency and enhances system stability and security, but also simplifies installation and maintenance procedures.

[0029] The board-end connector 10 is provided with a board-end housing 12, and the board-end plug 1 is disposed on one side of the board-end housing 12. The board-end housing 12 is provided with a mounting panel 13, and one side of the mounting panel 13 is provided with a sealing groove, and the sealing groove is provided with a sealing element 14. Specifically, the board-end housing 12 is provided with a board-end fixing part 121, and the board-end electrical component 2 is provided with an injection-molded fixing part 21 and a board-end wiring part 22. The injection-molded fixing part 21 is disposed inside the board-end fixing part 121, and the board-end wiring part 22 extends to the outside of the injection-molded fixing part 21; a clearance groove 122 is provided on the outer side of the board-end fixing part 121. In this embodiment, the design of the board-end housing 12 and its mounting panel 13 provides a stable and easy-to-install foundation for the connector. The combination of the sealing groove and the sealing element 14 effectively improves the sealing performance of the connector, preventing the intrusion of moisture, dust and other impurities in the external environment, thereby ensuring the normal operation and long-term stability of the internal electrical components of the connector. Secondly, the plate-end fixing part 121 provides reliable fixed support for the plate-end electrical connection element 2. The injection-molded fixing part 21 is embedded in the plate-end fixing part 121, which not only enhances the connection strength between the electrical connection element and the housing, but also optimizes the overall assembly process and improves production efficiency. At the same time, the design of the clearance groove 122 effectively avoids interference problems that may occur during assembly or use, further improving the reliability and durability of the connector. In addition, the extended design of the plate-end wiring part 22 allows the connector to easily connect to external cables or lines, thereby meeting the complex electrical connection requirements of the energy storage system. This design not only improves the flexibility and convenience of connection, but also helps to optimize the system layout and reduce the overall cost.

[0030] The board-end connector 2 is provided with a insertion positioning hole 23, and the wire-end insertion cavity 4 is provided with a insertion positioning post 41. The insertion positioning post 41 is used to cooperate with the insertion positioning hole 23 for positioning and guidance when the board-end connector 10 and the wire-end connector 20 are inserted. In this embodiment, the precise cooperation between the insertion positioning post 41 and the insertion positioning hole 23 effectively ensures the accurate positioning and guidance of the board-end connector 10 and the wire-end connector 20 during the insertion process. This design not only improves the assembly accuracy of the connector assembly, but also significantly enhances the stability and reliability of the connection, reducing the risk of connection failure due to misalignment. In addition, the cooperation between the insertion positioning post 41 and the positioning hole simplifies the connector installation process, allowing operators to complete the connection operation more quickly and conveniently, thereby improving work efficiency. At the same time, this design also facilitates subsequent maintenance and repair work, reducing maintenance costs.

[0031] An insulating anti-collision ring 24 is provided at the port of the board-end electrical component 2 located at the insertion positioning hole 23. In this embodiment, the presence of the insulating anti-collision ring 24 effectively enhances the safety of the connector assembly during the insertion process. It can prevent electrical short circuits caused by improper operation or external impact, thereby protecting the stable operation of the entire circuit system. Secondly, the anti-collision ring is made of insulating material and has excellent electrical insulation performance, further improving the electrical isolation effect of the connector assembly and reducing the risk of electrical failures caused by environmental factors. In addition, the insulating anti-collision ring 24 also plays a role in buffering and guiding, simplifying the insertion operation, improving connection efficiency, and reducing physical damage to components caused by inaccurate insertion.

[0032] A tight-fitting rib 411 is provided on the outer periphery of the insertion positioning post 41. The tight-fitting rib 411 is used to ensure a tight fit between the insertion positioning post 41 and the insertion positioning hole 23 during insertion. In this embodiment, the presence of the tight-fitting rib 411 greatly enhances the tightness of the fit between the insertion positioning post 41 and the insertion positioning hole 23, effectively preventing connector loosening or detachment due to vibration or external impact, thereby improving the connection stability and reliability of the entire energy storage system. Secondly, the design of the tight-fitting rib 411 optimizes the assembly efficiency during the connection process. Through its tight-fitting action, the insertion positioning post 41 can be inserted into the positioning hole more smoothly and accurately, reducing assembly errors, improving assembly accuracy, and also reducing the skill level requirements for operators. Furthermore, this structure also helps to improve the durability and service life of the energy storage connector assembly. The tight-fitting rib 411 can distribute stress at the connection point, reducing the risk of wear or damage caused by long-term stress concentration, thereby extending the service life of the connector and reducing maintenance costs.

[0033] The outer periphery of the board-end connector 1 is provided with positioning ribs 15, and the outer periphery of the wire-end insertion cavity 4 is provided with positioning grooves 42. The positioning ribs 15 are used to cooperate with the positioning grooves 42 to fix the board-end connector 10 and the wire-end connector 20 in place and prevent them from rotating. In this embodiment, the tight cooperation between the positioning ribs 15 and the positioning grooves 42 effectively achieves the fixing and anti-rotation functions of the board-end connector 10 and the wire-end connector 20 during the insertion process. Specifically, the positioning ribs 15 can be precisely embedded in the positioning grooves 42 to form a stable connection structure, preventing the connector from loosening or rotating during insertion, removal, or use, thereby ensuring the reliability and safety of the connector assembly. In addition, this design simplifies the assembly process of the connector assembly and improves assembly efficiency.

[0034] A sealing ring groove 51 is provided at the port of the wire-end plug 5, and a sealing ring 52 is provided within the sealing ring groove 51. A sealing step 31 is provided in the board-end insertion cavity 3. The sealing step 31 is used to cooperate with the sealing ring 52 to seal the board-end connector 10 and the wire-end connector 20 when they are mated. In this embodiment, the sealing performance of the connector assembly is greatly improved. The stable placement of the sealing ring 52 in the sealing ring groove 51 ensures that the interface can effectively isolate the external environment, such as moisture and dust, when the wire-end connector 20 and the board-end connector 10 are mated, thereby protecting the internal circuit from damage and extending the service life of the connector and the entire energy storage system. Secondly, the ingenious design of the sealing step 31 not only enhances the reliability of the seal, but also facilitates positioning during installation and disassembly, improving the convenience of operation. This structural design allows the connector assembly to maintain a good sealing effect after multiple mating and unmating cycles, reducing the failure rate caused by poor sealing.

[0035] The wire-end connector 20 is provided with a wire-end fixing part 53 and a wiring part 54. The wire-end fixing part 53 is provided with a fixed connecting element 55, one end of which is connected to a wire-end connecting element 6. One end of the wire-end connecting element 6 extends toward the wiring part 54. Specifically, the wiring part 54 is provided with a sealing ring 541, a locking sleeve 542, and a threaded sleeve 543. One end of the threaded sleeve 543 is threadedly connected to the wire-end fixing part 53, and the sealing ring 541 and the locking sleeve 542 are sequentially arranged inside the threaded sleeve 543. In this embodiment, the wire-end fixing part 53, through its unique structural design, securely mounts the fixed connecting element 55. One end of this fixed connecting element 55 is tightly connected to the wire-end connecting element 6, ensuring the stability and reliability of current transmission. At the same time, one end of the wire-end connecting element 6 extends toward the wiring part 54, facilitating subsequent electrical connections. The connector 54 is also ingeniously designed, integrating several key components such as a sealing ring 541, a locking sleeve 542, and a threaded sleeve 543. One end of the threaded sleeve 543 is tightly connected to the wire end fixing part 53 via threads. This connection method is not only simple and quick but also capable of withstanding large tensile and torque forces, ensuring the overall stability of the connector. Inside the threaded sleeve 543, the sealing ring 541 and the locking sleeve 542 are arranged sequentially, forming an effective sealing and locking mechanism. The sealing ring 541 prevents external moisture, dust, and other impurities from entering the connector, ensuring the cleanliness and safety of the electrical connection. The locking sleeve 542 further enhances the stability of the connection, preventing loosening or detachment under harsh environments such as vibration or impact.

[0036] Reference Appendix Figures 7-8As shown, in one embodiment, when the energy storage connector assembly is a positive or negative connector, structural adjustments are made to prevent mis-insertion. Specifically, the dimensions of the wire-end insertion cavity 4, board-end plug 1, insertion positioning hole 23, and insertion positioning post 41 are designed accordingly to prevent mistaken insertion. Specifically, when aligned with the positive terminal, a perfect fit is possible; when aligned with the negative terminal, misalignment prevents connector insertion; and when incorrectly inserted, the dimensions are limited, making insertion impossible, thus preventing mistaken insertion.

[0037] 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. An energy storage connector assembly, characterized by: The utility model provides a connector, including board end connector and wire end connector, board end connector is provided with board end plug and board end electrical contact element, board end plug is provided with board end plug cavity, board end electrical contact element is arranged in board end plug cavity, wire end connector is provided with wire end plug cavity, wire end plug cavity is provided with wire end plug, wire end plug cavity is used for matching board end plug, wire end plug is provided with wire end electrical contact element, board end electrical contact element is used for matching wire end plug and wire end electrical contact element electrical contact, one side of wire end plug is provided with locking assembly, locking assembly includes locking cavity, locking slider and lock tongue, locking slider is arranged in locking cavity and slides, one end of lock tongue is vertically arranged on locking slider, lock tongue is provided with first locking inclined plane and second locking inclined plane, first locking inclined plane is connected with second locking inclined plane, the periphery of board end plug is provided with locking groove, lock tongue is used for matching locking groove to fix board end plug in wire end plug cavity.

2. The energy storage connector assembly of claim 1, wherein: The board end connector is provided with a board end housing, the board end plug is arranged on one side of the board end housing, the board end housing is provided with a mounting panel, one side of the mounting panel is provided with a sealing groove, the sealing groove is provided with a sealing element.

3. The energy storage connector assembly of claim 2, wherein: The board end housing is provided with a board end fixing part, the board end electrical contact element is provided with an injection molding fixing part and a board end wiring part, the injection molding fixing part is arranged in the board end fixing part, and the board end wiring part extends to the outside of the injection molding fixing part; The outer side of the board end fixing part is provided with an empty slot.

4. The energy storage connector assembly of claim 1, wherein: The board end electrical contact element is provided with a plug-in positioning hole, the wire end plug-in cavity is provided with a plug-in positioning column, and the plug-in positioning column is used for matching the plug-in positioning hole to position and guide when the board end connector is plugged with the wire end connector.

5. The energy storage connector assembly of claim 4, wherein: The board end electrical contact element is provided with an insulating anti-collision ring at the port of the plug-in positioning hole.

6. The energy storage connector assembly of claim 4, wherein: The outer periphery of the plug-in positioning column is provided with a tight fitting rib, and the tight fitting rib is used for tight fitting when the plug-in positioning column is plugged with the plug-in positioning hole.

7. The energy storage connector assembly of claim 1, wherein: The outer periphery of the board end plug is provided with a positioning rib, and the outer periphery of the wire end plug-in cavity is provided with a positioning groove, and the positioning rib is used for matching the positioning groove to fix and prevent rotation when the board end connector is plugged with the wire end connector.

8. The energy storage connector assembly of claim 1, wherein: The port of the wire end plug is provided with a sealing ring groove, the sealing ring groove is provided with a sealing ring, the wire end plug-in cavity is provided with a sealing step, and the sealing step is used for matching the sealing ring to seal when the board end connector is plugged with the wire end connector.

9. The energy storage connector assembly of claim 1, wherein: The wire end connector is provided with a wire end fixing part and a wiring part, the wire end fixing part is provided with a fixed electrical contact element, one end of the fixed electrical contact element is connected with the wire end electrical contact element, and one end of the wire end electrical contact element extends towards the wiring part.

10. The energy storage connector assembly of claim 9, wherein: The wiring part is provided with a sealing ring, a locking sleeve and a threaded sleeve, one end of the threaded sleeve is threadedly connected with the wire end fixing part, and the sealing ring and the locking sleeve are sequentially arranged in the threaded sleeve.

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