Connector with terminal self-locking structure

Abstract

The invention relates to the technical field of connectors, and discloses a connector with a terminal self-locking structure, which comprises a connecting shell and a joint, a conductive plug is welded and fixed at one end, close to the connecting shell, in the joint, and a conductive elastic sheet is welded and fixed at the position, outside the conductive plug, in the connecting shell; side grooves and side cavities are formed in the two sides of the inner wall of the connecting shell, reconstruction ceramic particles are installed in the side grooves, reset springs and limiting balls are sequentially installed in the side cavities from inside to outside, and the limiting balls and the reset springs are welded and fixed; a groove is formed in the position, corresponding to the reconstructed ceramic particles, of the outer portion of the connector. A limiting groove is formed in the position, corresponding to the limiting ball, of the outer portion of the connector. And wiring shells are welded and fixed at one ends of the exteriors of the connecting shell and the joint. Through a double-locking structure and a stable conductive design, instant positioning and high-temperature reinforcement are realized, the problems of looseness and poor contact are avoided, the safety is improved, the service life is prolonged, and the electric connector is adaptive to multiple working conditions.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to a connector with a terminal self-locking structure. Background Technology

[0002] Connectors for air conditioner compressor terminals are core components of the air conditioner compressor circuit connection. Glue injection and ceramic particle addition are two key processes in their production. The core purpose of both processes is to improve the reliability, safety, and durability of the air conditioner compressor during operation, and they have stringent requirements for connection stability, conductivity reliability, and adaptability to high-temperature conditions.

[0003] Existing connectors mostly employ a single locking structure for mating and fixation, commonly a snap-locking scheme. However, snap-locks are prone to fatigue deformation after long-term use, leading to loosening and misalignment after mating, affecting connection stability. To cope with high-temperature conditions, some connectors use elastic components for auxiliary positioning; however, these elastic components are prone to aging and failure under high temperatures, failing to mitigate connection gaps caused by thermal expansion and contraction, thus reducing connection reliability. Furthermore, the conductive contact structure of existing connectors is relatively simple, relying heavily on the contact after insertion and removal, making them susceptible to vibration and gaps, resulting in poor contact and subsequent circuit failures. For ceramic particle applications, existing assembly methods mostly use conventional positioning assembly. However, during automated assembly, ceramic particles are easily affected by vibration, resulting in micron-level positioning deviations, and are prone to loosening and detachment during high-temperature operation, leading to the risk of creepage breakdown between terminals. Conventional improvement methods often focus on reinforcing the ceramic particle assembly force, but struggle to balance positioning accuracy and stable locking under high temperatures, failing to fundamentally solve the above problems and making them unsuitable for the complex operating conditions of air conditioning compressors. Therefore, a connector with a terminal self-locking structure is proposed. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a connector with a terminal self-locking structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a connector with a terminal self-locking structure, comprising:

[0006] The connector and the housing are provided. A conductive plug is welded and fixed inside the connector near the housing. A conductive spring is welded and fixed inside the housing outside the conductive plug. Both sides of the inner wall of the housing are provided with side grooves and side cavities. The side grooves are filled with reconstructed ceramic particles. The side cavities are filled with a return spring and a limiting ball from the inside to the outside. The return spring is welded and fixed to the side cavity, and the limiting ball is welded and fixed to the return spring. The connector has a groove on its exterior corresponding to the position of the reconstructed ceramic particle, and the groove is adapted to the reconstructed ceramic particle. The reconstructed ceramic particle has a protrusion on its exterior. A limiting groove is provided on the outside of the connector at the position corresponding to the limiting ball, and the limiting groove is adapted to the limiting ball; The outer end of both the housing and the connector is welded and fixed with a wiring housing. It can achieve dual self-locking of the shell and connector. The return spring pushes the limit ball to engage with the limit groove to complete the initial locking, ensuring that it is not easy to loosen or shift after docking. The conductive plug and conductive spring are stably engaged to ensure reliable conductivity. The reconstructed ceramic particles expand when heated and embed into the groove to form a secondary locking, which can adapt to temperature change conditions and avoid gaps caused by thermal expansion and contraction at high temperatures. It effectively improves the overall connection stability and safety of use, extends the service life of the connector, and solves the problems of poor docking stability and easy failure under high temperature conditions of traditional connectors.

[0007] Preferably, a limiting bolt is installed on the outer side of the wiring housing via a threaded connection, and the limiting bolt penetrates and extends into the interior of the wiring housing. The limiting bolt is used to fix the wire inside the wiring housing.

[0008] Preferably, a protective cover is installed on the outer side of both the connector and the housing, and the protective cover is connected to the connector and the housing by threaded connection. A wire hole is opened inside the protective cover, and a retaining ring is pasted and fixed inside the wire hole. The retaining ring is made of rubber, and the wire passes through the middle of the retaining ring. The retaining ring serves to prevent water and dust.

[0009] Preferably, a sealing ring is provided on the end face of the housing near the joint, and the sealing ring is embedded and connected to the housing, thereby improving the sealing performance between the housing and the joint.

[0010] Preferably, positioning shells are provided on both outer sides of the joint, and the positioning shells are welded and fixed to the joint.

[0011] Preferably, limiting members are provided on both sides of the outer surface of the connecting shell near the positioning shell, and the limiting members are welded and fixed to the connecting shell. The combination of the limiting members and the positioning shell achieves the positioning function and prevents rotation between the connecting shell and the connector.

[0012] Preferably, the connector has a corresponding annular groove on the side near the sealing ring, and the annular groove is integrally formed with the connector.

[0013] Preferably, the annular groove is adapted to the sealing ring to improve the sealing performance between the joint and the housing.

[0014] Preferably, the retaining ring has a through hole inside, and the through hole is integrally formed with the retaining ring. The through hole is used for the wire to pass through, and the inner wall of the through hole of the retaining ring is tightly attached to the outer wall of the wire, thereby achieving dustproof and waterproof.

[0015] Preferably, the positioning shell has a square groove on the side near the limiting member, and the square groove is adapted to the limiting member. The limiting member is inserted into the positioning shell, which makes the shell and the connector stable when they are connected, and prevents the shell and the connector from rotating, which would affect the connection stability.

[0016] Compared with the prior art, the present invention provides a connector with a terminal self-locking structure, which has the following advantages: This invention achieves initial self-locking of the connector shell and connector by using a return spring to push the limiting ball to engage with the connector limiting groove. This provides the advantage of quick docking and immediate fixation, solving the problem of easy loosening and displacement of traditional connectors after docking. At the same time, the precise engagement of the conductive plug and conductive spring ensures the stability of conductivity and avoids circuit failures caused by poor contact. The reconstructed ceramic particles, after thermal expansion, embed into the connector groove to form a secondary lock, which, together with the protrusion, improves the locking stability and achieves additional fixation in high-temperature environments. This has the advantages of adapting to temperature changes and improving connection reliability, solving the problem of gaps and decreased connection stability caused by thermal expansion and contraction of connectors under high-temperature conditions. The dual locking structure combined with the stable conductivity design improves the overall safety and service life of the connector and is suitable for various working conditions. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a three-dimensional view of the overall structure of the present invention in its separated state.

[0018] In the diagram: 1. Housing; 2. Connector; 3. Conductive plug; 4. Conductive spring; 5. Side cavity; 6. Return spring; 7. Limiting ball; 8. Side groove; 9. Reconstructed ceramic particle; 10. Positioning shell; 11. Limiting component; 12. Sealing ring; 13. Wiring shell; 14. Limiting bolt; 15. Protective cover; 16. Retaining ring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides a technical solution: a connector with a terminal self-locking structure. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 ,include: The housing 1 and the connector 2 are connected. A conductive plug 3 is welded and fixed inside the connector 2 near the end of the housing 1. A conductive spring 4 is welded and fixed inside the housing 1 outside the conductive plug 3. Both sides of the inner wall of the housing 1 are provided with side grooves 8 and side cavities 5. The side grooves 8 are filled with reconstructed ceramic particles 9. The side cavities 5 are filled with a reset spring 6 and a limiting ball 7 from the inside to the outside. The reset spring 6 is welded and fixed to the side cavity 5, and the limiting ball 7 is welded and fixed to the reset spring 6. A groove is provided on the outside of the connector 2 at the position corresponding to the reconstructed ceramic particle 9, and the groove is adapted to the reconstructed ceramic particle 9. A protrusion is provided on the outside of the reconstructed ceramic particle 9. A limiting groove is provided on the outside of the connector 2 at the position corresponding to the limiting ball 7, and the limiting groove is adapted to the limiting ball 7; Both the outer end of the housing 1 and the connector 2 are welded and fixed with a wiring housing 13; The reconstructed ceramic particle 9 is made of zirconia ceramic material. The protrusion has an arc-shaped structure and is integrally formed with the reconstructed ceramic particle 9. After being embedded in the groove of the connector 2, it forms a preliminary positioning. The limiting ball 7 is made of stainless steel. The opening of the side cavity 5 is provided with a closing structure to prevent the limiting ball 7 from falling off. When the connector 2 is inserted into the shell 1, the limiting ball 7 is squeezed and compressed by the return spring 6. After complete docking, the return spring 6 rebounds and pushes the limiting ball 7 into the limiting groove, forming a double lock with the reconstructed ceramic particle 9. The conductive plug 3 and the conductive spring 4 are correspondingly matched to ensure stable conductive contact. The housing 1 and connector 2 are fitted with a groove by reconstructing ceramic particles 9 (zirconia material, wear-resistant and corrosion-resistant), and the arc-shaped protrusion enhances the fit, preventing loosening caused by slight vibration. At the same time, the ceramic material has good insulation to prevent leakage of conductive parts. The limit ball 7 and the return spring 6 form an elastic locking mechanism. The stainless steel limit ball 7 has high strength and is not easily deformed, and the return spring 6 provides continuous elastic force to ensure stable locking. The clear feel during insertion and removal allows for quick judgment of whether the connection is in place. The conductive plug 3 is welded and fixed to the conductive spring 4, which is firm and has excellent conductivity, avoiding problems such as overheating and power failure caused by poor contact. The wiring housing 13 is welded and fixed to the housing 1 and connector 2, providing a stable carrier for wire connection. The overall structure takes into account self-locking, conductivity and installation stability, and is suitable for a variety of complex working conditions.

[0021] Please see Figure 2 and Figure 3A limiting bolt 14 is installed on the outer side of the terminal housing 13 via a threaded connection, and the limiting bolt 14 penetrates and extends into the interior of the terminal housing 13. The limiting bolt 14 is used to fix the wire inside the terminal housing 13. The limiting bolt 14 is made of high-strength carbon steel with a galvanized anti-rust treatment and fine thread structure to improve the tightening force. An anti-slip pad is provided inside the terminal housing 13 at the position corresponding to the limiting bolt 14. After the wire is inserted into the terminal housing 13, the limiting bolt 14 is rotated until the anti-slip pad is tightly attached to the outer sheath of the wire, and the wire is fixed by pressure. It is suitable for multiple specifications of wires with diameters of 0.5-2.0mm and will not damage the internal core of the wire. The design of the limiting bolt 14 solves the core problem of loose wire connections. The fine-pitch thread structure makes the tightening force more uniform, avoiding over-tightening and damage to the wires. The high-strength carbon steel material with galvanized treatment has good rust resistance and wear resistance, and can adapt to harsh environments such as humid and dusty environments, extending its service life. The anti-slip pad further enhances the wire fixing effect, preventing the wire from shifting due to pulling and vibration, and ensuring the continuity of conductivity. This fixing method is easy to operate, and wire installation and removal can be completed without special tools. It is compatible with multiple wire specifications and improves the versatility of the connector. At the same time, the threaded fastening method has good sealing performance, which can reduce the entry of external impurities into the wiring housing 13, protect the wire joint from corrosion, and ensure the reliability of the circuit connection.

[0022] Please see Figure 2 Both connector 2 and housing 1 have a protective cover 15 installed on their outer side. The protective cover 15 is connected to connector 2 and housing 1 by thread. The protective cover 15 has a wire hole inside. A retaining ring 16 is glued and fixed inside the wire hole. The retaining ring 16 is made of rubber. The wire passes through the middle of the retaining ring 16. The retaining ring 16 serves to prevent water and dust. The protective cover 15 is made of ABS engineering plastic. It has a smooth surface and is impact resistant. The diameter of the wire hole is adapted to the retaining ring 16. The retaining ring 16 is made of silicone rubber with a Shore hardness of 60-70. The hole has a flexible structure and can deform slightly according to the diameter of the wire. The glue is fixed with high temperature resistant waterproof adhesive to ensure a tight fit with the inner wall of the wire hole. When the wire passes through, the retaining ring 16 completely covers the outer sheath of the wire. The protective cover 15 is threadedly connected to the connector 2 and the housing 1, making installation and disassembly convenient. The ABS material is impact-resistant and aging-resistant, effectively protecting the wiring parts from external impact damage. The silicone rubber retaining ring 16 has excellent waterproof and dustproof performance. The Shore hardness matching design can achieve a tight fit with wires of different diameters, without damaging the wires due to excessive tightness or leaving gaps due to excessive looseness. At the same time, silicone rubber is resistant to high and low temperatures and can work stably in environments ranging from -40℃ to 85℃. The retaining ring 16 is fixed with high-temperature waterproof adhesive to prevent it from falling off and failing after long-term use. The cooperation between the wire hole and the retaining ring 16 forms double protection, preventing moisture and dust from entering the connector, preventing oxidation and short circuits of conductive parts, greatly improving the suitability of the connector in outdoor and humid environments, and extending the overall service life of the equipment.

[0023] Please see Figure 2 A sealing ring 12 is provided on the end face of the housing 1 near the connector 2, and the sealing ring 12 is embedded and connected to the housing 1. The sealing ring 12 improves the sealing performance between the housing 1 and the connector 2. The sealing ring 12 is made of fluororubber, which is oil-resistant and resistant to high and low temperatures. It has a circular cross-section and is fixed by the annular groove on the end face of the housing 1 during installation. The outer diameter of the sealing ring 12 is slightly larger than the diameter of the groove, forming an interference fit to ensure that it is not easy to fall off after installation. When the connector 2 and the housing 1 are mated, the sealing ring 12 is squeezed and deformed to fill the gap between them. The fluororubber sealing ring 12 solves the sealing problem at the joint between the housing 1 and the connector 2. Its oil resistance, high and low temperature resistance, and corrosion resistance make it suitable for use in industrial equipment, automobiles and other scenarios. It can resist the corrosion of chemical substances such as engine oil and coolant and maintain elasticity under extreme temperatures. The interference fit ensures that the sealing ring 12 is firmly installed. The compression deformation during mating makes the sealing surface fit completely without gaps, effectively preventing water vapor, dust and oil from entering the interior, protecting core components such as the conductive plug 3 and conductive spring 4, and avoiding failures such as poor contact and short circuits. The good sealing performance also improves the connector's anti-aging ability, reduces the corrosion of the internal structure by the external environment, ensures the long-term stable operation of the connector and reduces maintenance costs.

[0024] Please see Figure 1 , Figure 2 and Figure 3 Positioning shells 10 are provided on both sides of the outer side of the connector 2, and the positioning shells 10 are welded and fixed to the connector 2. The positioning shells 10 are made of aluminum alloy and are welded and fixed to the connector 2 by argon arc welding. There are no weld defects at the weld, ensuring structural strength. The positioning shells 10 are block structures that fit tightly to the outside of the connector 2. Their height and width are adapted to the size of the limiting part 11 to ensure precise matching between the two. The surface of the positioning shells 10 is anodized to improve rust resistance. The positioning shell 10, made of aluminum alloy, is high in strength and lightweight. After anodizing, it is rust-proof and corrosion-resistant, making it suitable for various complex environments. The argon arc welding method ensures a firm connection between the positioning shell 10 and the connector 2, eliminating the risk of loosening and allowing it to withstand certain external impacts and tensile forces. The positioning shell 10 provides a precise mating reference for the limiting component 11, ensuring accurate positioning when the shell 1 and connector 2 are mated, avoiding poor contact of conductive parts due to mating deviations. At the same time, the block structure of the positioning shell 10 enhances the overall structural strength of the connector 2, reducing deformation of the connector 2 during insertion, removal, and use. In addition, the positioning shell 10 provides guidance for connector mating, facilitating quick positioning and mating by installers, improving installation efficiency, and reducing installation errors.

[0025] Please see Figure 1 , Figure 2 and Figure 3 Limiting elements 11 are provided on both sides of the outer shell 1 near the positioning shell 10, and the limiting elements 11 are welded and fixed to the shell 1. The limiting elements 11 and the positioning shell 10 are combined to achieve the positioning function and prevent the shell 1 and the connector 2 from rotating. The limiting elements 11 are made of stainless steel and have an L-shaped structure. One end is fixed to the shell 1 by argon arc welding, and the other end is the insertion end. The surface is smooth and burr-free. The mating surface of the positioning shell 10 fits tightly with the limiting elements 11. There is no shaking gap after insertion. The circumferential rotation of the shell 1 and the connector 2 is restricted by mechanical locking. The insertion end of the limiting elements 11 is provided with a guide slope to facilitate quick insertion during docking. The L-shaped limiting component 11 cooperates with the positioning shell 10 to restrict the relative rotation of the shell 1 and the connector 2 in the circumferential direction, effectively preventing the connector from rotating due to equipment vibration or pulling during use, preventing misalignment and wear of the conductive plug 3 and the conductive spring 4, and ensuring conductive stability. The stainless steel material has high strength and is not easily deformed, and can withstand mechanical stress for a long time. The guide slope design makes docking smoother and improves installation efficiency. The limiting component 11 is fixed to the shell 1 by argon arc welding, which is firm and has no risk of falling off. Together with the positioning shell 10, it forms a precise positioning, ensuring that the positional accuracy remains consistent with each docking and avoiding component damage caused by repeated docking. This structure greatly improves the stability of the connector under dynamic working conditions and is suitable for high-frequency vibration scenarios such as motors and mechanical equipment.

[0026] Please see Figure 2 The connector 2 has a corresponding annular groove on the side near the sealing ring 12, and the annular groove is integrally formed with the connector 2.

[0027] Please see Figure 2 The annular groove is adapted to the sealing ring 12, and the sealing ring 12 is combined with the annular groove to improve the sealing performance between the joint 2 and the housing 1.

[0028] Please see Figure 2The retaining ring 16 has a through hole inside, and the through hole is integrally formed with the retaining ring 16. The through hole is used for the wire to pass through. The inner wall of the through hole of the retaining ring 16 is tightly attached to the outer wall of the wire, thereby achieving dustproof and waterproof.

[0029] Please see Figure 1 , Figure 2 and Figure 3 The positioning shell 10 has a square groove on the side near the limiting member 11, and the square groove is adapted to the limiting member 11. The limiting member 11 is inserted into the positioning shell 10, which makes the connection between the shell 1 and the connector 2 more stable and prevents the shell 1 and the connector 2 from rotating and affecting the connection stability.

[0030] This solution involves the following steps: First, insert the ends of the two wires to be connected into the connector 2 and the wiring shell 13 outside the housing 1, respectively. After ensuring precise alignment between the wires and the conductive structure inside the wiring shell 13, tighten the limiting bolt 14. Its fine-threaded structure applies pressure evenly, and the anti-slip pad inside the wiring shell 13 firmly secures the wires, preventing pulling and displacement without damaging the wire core, while simultaneously providing initial sealing protection. Next, install the protective cover 15 outside the connector 2 and housing 1 using a threaded connection. The wires pass through the wire hole in the protective cover 15 and the silicone rubber retaining ring 16. The retaining ring 16, through its flexible deformation, tightly adheres to the wire sheath, providing waterproofing and dustproofing. Then, smoothly insert the connector 2 into the housing 1. During insertion, the outer wall of the connector 2 presses against the limiting ball 7, causing the limiting ball 7 to compress the return spring 6 inside the side cavity 5 and retract. Simultaneously, the positioning shell 10 and the limiting component 11 precisely engage through a guide structure, with the limiting component 11 inserting into the square groove of the positioning shell 10. Inside, the circumferential rotation of both is restricted. When connector 2 is inserted to the preset position, the return spring 6 elastically rebounds and pushes the limiting ball 7 into the limiting groove of connector 2, forming an initial elastic lock. At this time, the conductive plug 3 inside connector 2 and the conductive spring 4 inside the housing 1 are precisely fitted, establishing a stable conductive path. At the same time, the sealing ring 12 on the housing 1 is embedded in the annular groove of connector 2 and is squeezed and deformed, filling the gap and improving the sealing performance. When the connector is working, if the ambient temperature rises, the reconstructed ceramic particles 9 in the side groove 8 of the housing 1 are heated and expanded. Their arc-shaped protrusions are deeply embedded in the groove of connector 2, forming a secondary reinforced lock and offsetting the effect of temperature deformation. When disassembling, the connector 2 and housing 1 are separated by reverse force. The limiting ball 7 is squeezed and retracted. The reconstructed ceramic particles 9 shrink and reset as the temperature decreases. The wire can be taken out by loosening the limiting bolt 14. The whole operation does not require special tools, taking into account both installation convenience and connection stability. All components work together to ensure reliable conductivity, sealing compliance and environmental adaptability.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connector with a terminal self-locking structure, characterized in that, include: The connector (1) and the connector (2) are connected. A conductive plug (3) is welded and fixed inside the connector (2) at one end near the connector (1). A conductive spring (4) is welded and fixed inside the connector (1) outside the conductive plug (3). The inner wall of the housing (1) is provided with side grooves (8) and side cavities (5) on both sides. The side grooves (8) are filled with reconstructed ceramic particles (9). The side cavities (5) are filled with a reset spring (6) and a limiting ball (7) from the inside to the outside. The reset spring (6) is welded to the side cavity (5) and the limiting ball (7) is welded to the reset spring (6). The connector (2) has a groove at the position corresponding to the reconstructed ceramic particle (9) on its outside, and the groove is adapted to the reconstructed ceramic particle (9). The reconstructed ceramic particle (9) has a protrusion on its outside. A limiting groove is provided on the outside of the connector (2) at the position corresponding to the limiting ball (7), and the limiting groove is adapted to the limiting ball (7); Both the outer end of the housing (1) and the connector (2) are welded and fixed with a wiring housing (13).

2. A connector with a terminal self-locking structure according to claim 1, characterized in that: The outer side of the wiring housing (13) is fitted with a limiting bolt (14) by thread engagement, and the limiting bolt (14) penetrates and extends into the interior of the wiring housing (13).

3. A connector with a terminal self-locking structure according to claim 1, characterized in that: The connector (2) and the housing (1) are both equipped with a protective cover (15) on their outer side. The protective cover (15) is connected to the connector (2) and the housing (1) by threaded connection. The protective cover (15) has a wire hole inside, and a retaining ring (16) is pasted and fixed inside the wire hole.

4. A connector with a terminal self-locking structure according to claim 1, characterized in that: A sealing ring (12) is provided on the end face of the housing (1) near the connector (2), and the sealing ring (12) is embedded and connected to the housing (1).

5. A connector with a terminal self-locking structure according to claim 1, characterized in that: Positioning shells (10) are provided on both sides of the outer side of the connector (2), and the positioning shells (10) are welded and fixed to the connector (2).

6. A connector with a terminal self-locking structure according to claim 5, characterized in that: Limiting elements (11) are provided on both sides of the outer shell (1) near the positioning shell (10), and the limiting elements (11) are welded and fixed to the shell (1).

7. A connector with a terminal self-locking structure according to claim 4, characterized in that: The connector (2) has a corresponding annular groove on the side near the sealing ring (12), and the annular groove is integrally formed with the connector (2).

8. A connector with a terminal self-locking structure according to claim 7, characterized in that: The annular groove is adapted to the sealing ring (12).

9. A connector with a terminal self-locking structure according to claim 3, characterized in that: The retaining ring (16) has a through hole inside, and the through hole is integrally formed with the retaining ring (16).

10. A connector with a terminal self-locking structure according to claim 6, characterized in that: The positioning shell (10) has a square groove on the side near the limiting member (11), and the square groove is adapted to the limiting member (11).

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