A misplug-proof coded connector and methods of assembling and using the same

Abstract

The application discloses a coding connector with mistaken insertion prevention and an assembling and using method thereof, relates to the technical field of connectors, and comprises a plug assembly and a socket assembly which are adapted to each other and are provided with mistaken insertion prevention protrusions and grooves; the plug assembly comprises a plug insulating piece, a plug head, a conductive terminal, a copper pipe, a torsional spring, a plastic sleeve and a back cover; a first cavity is arranged in the plug insulating piece; a second cavity is arranged on one side of the plug insulating piece; a third cavity is arranged on the other side of the plug insulating piece; the plug head is arranged in the first cavity; the copper pipe is sleeved on the plug head; the conductive terminal is sleeved on the outer side of one end of the copper pipe in the first cavity; the torsional spring is arranged in the copper pipe; and the plastic sleeve is sleeved on the outer side of the copper pipe. The application solves the problems of difficult mold design and core pulling, easy damage to the mold and reduced service life of the mold caused by one-time embedding plastic forming of the plug assembly in the current connector.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically to an coded connector with anti-mismating features and its assembly and usage methods. Background Technology

[0002] As a key component of connectors, plug assemblies must simultaneously meet the requirements of insulation protection, stable conductivity, and robust structure. Currently, the industry mostly adopts a one-time embedded molding process for production, which involves directly placing multiple disparate components such as plugs, conductive terminals, and copper tubes into the mold cavity in sequence, and then achieving integrated assembly of the plug insulation components and various functional components through one-time injection molding, thereby simplifying subsequent assembly steps and improving the overall structural integrity.

[0003] However, this one-time insert molding process has significant technical defects: On the one hand, since the plug assembly includes various components with different structural forms, such as plugs, conductive terminals, and copper tubes, and each component needs to maintain a precise relative position within the mold, this requires the mold to be designed with a complex cavity structure and multiple independent core-pulling mechanisms. This not only greatly increases the difficulty of mold design, but also easily causes interference due to the dense layout of the core-pulling mechanisms, resulting in difficulty in core pulling. On the other hand, when performing the core-pulling operation after injection molding, the dispersed components are prone to slight displacement due to uneven injection pressure, causing abnormal friction between the components and the inner wall of the mold cavity during the core-pulling process. This increases the core-pulling resistance, leading to difficulty in core pulling, and easily causes scratches on the mold cavity and wear on the core-pulling mechanism, seriously reducing the service life of the mold. This, in turn, increases production and maintenance costs, affects mass production efficiency, and makes it difficult to meet the needs of large-scale, low-cost connector production.

[0004] Therefore, there is an urgent need for a new type of connector structure to solve the problems of mold design difficulties, core pulling difficulties, and easy damage to the mold and reduced mold life caused by the one-time embedded molding of the plug assembly in the current connector. Summary of the Invention

[0005] This invention proposes an coded connector with anti-misinsertion features, which solves the problems of mold design difficulties, core pulling difficulties, and easy damage to the mold and reduced mold life caused by the one-time embedded molding of the plug assembly in current connectors.

[0006] The technical solution of this invention is:

[0007] A coded connector with anti-mis-mating features includes a plug assembly and a socket assembly that are mutually compatible and have anti-mis-mating protrusions and grooves. The plug assembly includes a plug insulator, a plug end, a conductive terminal, a copper tube, a torsion spring, a plastic sleeve, and a back cover. The plug insulator has a first cavity, a second cavity communicating with the first cavity on one side, and a third cavity communicating with the first cavity on the other side. The plug end is disposed in the first cavity. One end of the copper tube passes through the second cavity and extends into the first cavity, with the other end of the copper tube fitted onto the plug end. One end of the terminal passes through the third cavity and extends into the first cavity. The end of the conductive terminal is sleeved on the outside of the copper tube located in the first cavity. The torsion spring is set inside the copper tube and is interference-fitted with the copper tube. The plastic sleeve is sleeved on the outside of the copper tube. One end of the plastic sleeve is located in the first cavity and abuts against the conductive terminal. The other end of the plastic sleeve passes through the second cavity and wraps around the copper tube. The plastic sleeve is fixedly connected to the plug insulator and is used to fix the plug, conductive terminal and copper tube. The back cover is sleeved on the outside of the other end of the conductive terminal and is detachably connected to the plug insulator.

[0008] Preferably, the socket assembly includes a rotating housing, a socket insulator, and a conductive pin. The socket insulator has a plug-in cavity that extends through both ends of the socket insulator. One end of the plug-in cavity has a plug-in portion. One end of the conductive pin extends through the plug-in portion to the other end of the plug-in cavity and is engaged with the plug-in portion. The rotating housing is located at the other end of the plug-in cavity and is sleeved on the outside of the end of the socket insulator and is engaged with the socket insulator.

[0009] Preferably, the plug portion is provided with a variable diameter slot that passes through the plug portion, the conductive pin is provided with a variable diameter part that cooperates with the variable diameter slot, the variable diameter part is fixedly connected to the conductive pin, one end of the plug portion is fixedly provided with a plurality of spring pieces, the plurality of spring pieces are distributed in a circumferential array and one end is contracted towards the center, the end of the variable diameter part is provided with a limiting ring that cooperates with the plurality of spring pieces, and the limiting ring is fixedly connected to the variable diameter part.

[0010] Preferably, the variable diameter section is provided with a first sealing ring, which is embedded and installed on the outside of the variable diameter section, and the outside of the first sealing ring contacts and seals the inner wall of the variable diameter groove.

[0011] Preferably, a number of elastic cards and a number of pairs of limiting plates are fixedly provided inside the rotating housing, a pair of limiting plates are provided between two adjacent elastic cards, and a limiting card slot is provided at one end of the socket insulation component, and a number of elastic cards are engaged in the limiting card slot.

[0012] Preferably, the conductive pin has an anti-accidental contact insulator at one end of its position within the insertion cavity, and the conductive pin has an installation slot, with one end of the anti-accidental contact insulator inserted into the installation slot.

[0013] Preferably, a threaded connecting tube is provided on one side of the plug insulation component, the threaded connecting tube is connected to the third cavity, one end of the rear cover is sleeved on the outside of the threaded connecting tube and threadedly connected to the threaded connecting tube, a second sealing ring is provided between the rear cover and the threaded connecting tube, the other end of the rear cover is an inwardly tapering variable diameter structure, a cable sealing ring is provided inside the rear cover, and one end of the cable sealing ring is sleeved on the outside of the conductive terminal.

[0014] Preferably, the plug insulation includes a switch assembly for locking the plug assembly and the socket assembly.

[0015] Preferably, the switch assembly includes a switch sleeve, a first switch, and a first spring. The switch sleeve has a receiving cavity extending through it. The first switch is disposed within the receiving cavity and is slidably connected to it. One end of the first switch extends outside the receiving cavity, and the other end has a first receiving groove. One end of the first spring is disposed within the first receiving groove, and the other end extends into the receiving cavity. The first spring and the first receiving groove are in clearance fit. The plug insulator has a mounting groove that mates with the switch sleeve. One side of the mounting groove communicates with a second cavity, and one side of the mounting groove has a snap-fit ​​opening. The switch sleeve has an anti-disengagement support that mates with the snap-fit ​​opening. The anti-disengagement support is fixedly connected to the switch sleeve. The switch sleeve is disposed within the mounting groove, and the anti-disengagement support... The plug is engaged with the snap-fit ​​slot. The plug insulation has a first through-hole corresponding to the receiving cavity on one side. The end of the first switch outside the receiving cavity extends through the first through-hole to the outside of the plug insulation and is slidably connected to the plug insulation. The end of the first spring inside the receiving cavity abuts against the snap-fit ​​slot. The end of the first switch inside the receiving cavity is fixedly provided with a first locking block. The side wall of the switch sleeve facing the second cavity is provided with a first travel limiting groove. The first travel limiting groove communicates with the receiving cavity. The rotating outer shell is provided with a first locking groove corresponding to the first travel limiting groove. One end of the first locking block passes through the first travel limiting groove and extends into the first locking groove. The first locking block is slidably connected to the first travel limiting groove and the first locking groove respectively.

[0016] Preferably, the switch assembly includes a switch washer, a second switch, and a second spring. A locking cavity for mounting the second switch is provided within the plug insulator. One side of the plug insulator has a second through-hole communicating with the locking cavity, and the other side has a fastening groove communicating with the locking cavity. The second switch is disposed within the locking cavity and slidably connected to it. One end of the second switch passes through the second through-hole and is slidably connected to it. The other end of the second switch has a second receiving groove. One end of the second spring is disposed within the second receiving groove, and the other end extends into the locking cavity. The second spring and the second receiving groove are in clearance fit. The switch washer is fastened into the fastening groove. The end of the second spring located within the locking cavity abuts against the switch washer. A second locking block is fixedly provided at the end of the second switch located within the locking cavity. A second travel limiting groove is provided on one side wall of the second cavity, communicating with the locking cavity. A second locking groove corresponding to the second travel limiting groove is provided on the rotating housing. One end of the second locking block passes through the second travel limiting groove and extends into the second locking groove. The second locking block is slidably connected to both the second travel limiting groove and the second locking groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention pre-assembles the plug assembly, including the plug, conductive terminal, copper tube, torsion spring, and plastic sleeve. One end of the copper tube is installed on the plug, and then the conductive terminal is fitted onto the outside of the copper tube end near the plug to create a continuous conductive path. The torsion spring is then press-fitted to the inner wall of the copper tube to eliminate assembly gaps and improve connection tightness. The plastic sleeve is then fitted onto the outside of the copper tube, with one end abutting the conductive terminal and the other end wrapping and securing the copper tube. This pre-assembly of the various components into a relatively stable overall assembly is then performed. This overall assembly is then placed into a mold as a single insert, and a plug insulation component is formed around the overall assembly through injection molding for fixation. Finally, the back cover is fitted onto the outside of the conductive terminal and detachably connected to the plug insulation component, completing the plug assembly assembly. In this invention, the plug assembly only needs to consider the pre-assembled overall assembly during injection molding, without needing to consider each individual component separately. This solves the problems of mold design difficulties, core pulling difficulties, and mold damage and reduced mold lifespan caused by the one-time insert molding of plug assemblies in current connectors. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an coded connector with anti-misinsertion features as described in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a partial exploded structure of the plug assembly described in an embodiment of the present invention. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of a partial exploded structure of the plug assembly described in an embodiment of the present invention. Figure 2 ;

[0023] Figure 4 This is a cross-sectional structural diagram of the plug assembly described in an embodiment of the present invention;

[0024] Figure 5 This is an exploded view of the socket assembly described in an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional structural diagram of the socket assembly described in an embodiment of the present invention;

[0026] Figure 7 This is a partial exploded view of the socket assembly described in an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the partial exploded structure of the switching assembly described in this embodiment of the invention. Figure 1 ;

[0028] Figure 9 This is a schematic diagram of the structure of the plug insulation component described in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the partial exploded structure of the plug insulator and switch assembly described in the embodiments of the present invention. Figure 1 ;

[0030] Figure 11 This is a schematic diagram of the partial exploded structure of the plug insulator and switch assembly described in the embodiments of the present invention. Figure 2 ;

[0031] Figure 12 This is a flowchart of the preparation method of the spring sheet of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Plug assembly, 2-Socket assembly, 10-Plug insulator, 11-Plug end, 12-Conductive terminal, 13-Copper tube, 14-Torsion spring, 15-Plastic sleeve, 16-Back cover, 17-First cavity, 18-Second cavity, 19-Third cavity, 20-Rotating housing, 21-Socket insulator, 22-Conductive pin, 23-Interlocking cavity, 24-Interlocking part, 25-Reducing groove, 26-Reducing part, 27-Spring, 28-Restricting ring, 29-First sealing ring, 30-Elastic clip, 31-Restricting piece, 32-Restricting slot, 33-Anti-accidental contact insulator, 34-Mounting slot, 35-Threaded connecting tube, 36-Second sealing ring, 37-Cable sealing ring, 3 8-Switch assembly, 39-Switch sleeve, 40-First switch, 41-First spring, 42-Receiving cavity, 43-First receiving groove, 44-Mounting groove, 45-Snap-fit ​​groove, 46-Anti-detachment support, 47-First passage, 48-First locking block, 49-First travel limit groove, 50-First locking groove, 51-Switch gasket, 52-Second switch, 53-Second spring, 54-Locking cavity, 55-Second passage, 56-Snap-fit ​​groove, 57-Second receiving groove, 58-Second locking block, 59-Second travel limit groove, 60-Second locking groove, 61-Sealing gasket, 62-Restricting rib, 63-Restricting groove, 64-Restricting strip, 65-Extension rod. Detailed Implementation

[0034] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0035] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0038] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] Example 1: As Figures 1 to 7As shown, this embodiment discloses an coded connector with anti-misinsertion features, including a plug assembly 1 and a socket assembly 2 that are mutually compatible and have anti-misinsertion protrusions and grooves. The plug assembly 1 includes a plug insulator 10, a plug 11, a conductive terminal 12, a copper tube 13, a torsion spring 14, a plastic sleeve 15, and a rear cover 16. The plug insulator 10 has a first cavity 17 inside, a second cavity 18 communicating with the first cavity 17 on one side of the plug insulator 10, and a third cavity 19 communicating with the first cavity 17 on the other side of the plug insulator 10. The plug 11 is disposed in the first cavity 17. One end of the copper tube 13 passes through the second cavity 18 and extends into the first cavity 17, and the other end of the copper tube 13 is sleeved on the plug 11. The conductive terminal 12 has one end passing through the third cavity 19 and extending into the first cavity 17. The end of the conductive terminal 12 is sleeved on the outside of the copper tube 13 located inside the first cavity 17. The torsion spring 14 is disposed inside the copper tube 13 and is interference-fitted with the copper tube 13. The plastic sleeve 15 is sleeved on the outside of the copper tube 13. One end of the plastic sleeve 15 is disposed inside the first cavity 17 and abuts against the conductive terminal 12. The other end of the plastic sleeve 15 passes through the second cavity 18 and wraps around the copper tube 13. The plastic sleeve 15 is fixedly connected to the plug insulator 10 to fix the plug 11, the conductive terminal 12 and the copper tube 13. The rear cover 16 is sleeved on the outside of the other end of the conductive terminal 12 and is detachably connected to the plug insulator 10.

[0042] This invention pre-assembles the plug assembly 1 by first assembling the plug 11, conductive terminal 12, copper tube 13, torsion spring 14, and plastic sleeve 15 in the plug assembly 1. One end of the copper tube 13 is installed on the plug 11, and then the conductive terminal 12 is sleeved on the outside of the end of the copper tube 13 located on the plug 11 to form a continuous conductive path. Then, the torsion spring 14 is interference-fitted with the inner wall of the copper tube 13 to eliminate assembly gaps and improve connection tightness. Then, the plastic sleeve 15 is sleeved on the outside of the copper tube 13, so that one end of the plastic sleeve 15 abuts against the conductive terminal 12, and the other end wraps and fixes the copper tube 13. The above-mentioned scattered components are pre-assembled into a relatively stable whole assembly. Then, the whole assembly is placed into a mold as a single insert, and the plug insulation 10 that wraps the whole assembly is formed by injection molding to achieve fixation. Finally, the back cover 16 is sleeved on the outside of the conductive terminal 12 and detachably connected to the plug insulation 10, thus completing the assembly of the plug assembly 1.

[0043] In the connector described in this invention, the plug assembly 1 only needs to be considered as a pre-assembled whole during injection molding, without the need to consider each individual component separately. This solves the problems of mold design difficulties, core pulling difficulties, and mold damage and reduced mold life caused by the one-time insertion molding of the plug assembly 1 in current connectors. Specifically, the copper tube 13 has a sealing gasket 61 at its end that mates with the plastic sleeve 15 to increase the sealing between the copper tube 13 and the plastic sleeve 15.

[0044] To facilitate the connection between the socket assembly 2 and the plug assembly 1, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the socket assembly 2 includes a rotating housing 20, a socket insulator 21, and a conductive pin 22. The socket insulator 21 has a plugging cavity 23 that passes through both ends of the socket insulator 21. One end of the plugging cavity 23 has a plugging part 24. One end of the conductive pin 22 passes through the plugging part 24 and extends into the other end of the plugging cavity 23. The conductive pin 22 is engaged with the plugging part 24. The rotating housing 20 is located at the other end of the plugging cavity 23. The rotating housing 20 is sleeved on the outside of the end of the socket insulator 21 and is engaged with the socket insulator 21.

[0045] When the socket assembly 2 is plugged into the plug assembly 1, one end of the socket insulator 21 with a rotating housing 20 is inserted into the second cavity 18. The outer wall of the rotating housing 20 is slidably connected to the inner wall of the second cavity 18. The plastic sleeve 15 and the copper tube 13 are inserted into the plugging cavity 23 and slidably connected to the plugging cavity 23. At the same time, one end of the conductive pin 22 passes through the plastic sleeve 15 and the copper tube 13 and is inserted into the torsion spring 14 and in close contact with the torsion spring 14, which facilitates the plugging of the socket assembly 2 and the plug assembly 1.

[0046] To facilitate the installation between the conductive pin 22 and the socket insulation 21, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the plug-in part 24 is provided with a variable diameter slot 25 that passes through the plug-in part 24, and the conductive pin 22 is provided with a variable diameter part 26 that cooperates with the variable diameter slot 25. The variable diameter part 26 is fixedly connected to the conductive pin 22. One end of the plug-in part 24 is fixedly provided with a plurality of spring pieces 27, which are arranged in a circumferential array and one end shrinks towards the center. The end of the variable diameter part 26 is provided with a limiting ring 28 that cooperates with the plurality of spring pieces 27. The limiting ring 28 is fixedly connected to the variable diameter part 26.

[0047] The variable-diameter slot 25 of the insertion part 24 engages with the variable-diameter part 26 of the conductive pin 22 to achieve radial positioning of the conductive pin 22. The circumferentially arrayed spring pieces 27 naturally contract towards the center. During assembly of the conductive pin 22, the limiting ring 28 compresses the spring pieces 27 to expand. After assembly, the spring pieces 27 reset and engage with one side of the limiting ring 28, forming an axial limit. In use, the mechanical engagement achieves dual positioning of the conductive pin 22, effectively preventing axial loosening or detachment during use. Simultaneously, the engagement of the variable-diameter structure with the spring pieces simplifies the assembly process, eliminating the need for additional fasteners and improving assembly efficiency and connection reliability.

[0048] To improve the sealing performance of the socket assembly 2, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a first sealing ring 29 is provided on the variable diameter part 26. The first sealing ring 29 is embedded and installed on the outside of the variable diameter part 26, and the outside of the first sealing ring 29 contacts and seals with the inner wall of the variable diameter groove 25.

[0049] The first sealing ring 29 is embedded in the mounting position on the outside of the reducing portion 26. After assembly, it fits tightly against the inner wall of the reducing groove 25. The elastic deformation of the sealing ring fills the gap between them, forming a radial sealing structure. In use, the first sealing ring 29 forms the first line of defense for sealing inside the socket assembly 2, effectively preventing external impurities such as moisture and dust from entering the mating cavity 23. This avoids poor contact or oxidation corrosion between the conductive pin 22 and the mating portion 24, significantly improving the sealing performance and service life of the connector, making it suitable for complex outdoor or humid working environments.

[0050] To facilitate the installation of the rotating housing 20 and the socket insulation 21, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a number of elastic cards 30 and a number of pairs of limiting pieces 31 are fixedly provided inside the rotating housing 20. A pair of limiting pieces 31 are provided between two adjacent elastic cards 30. One end of the socket insulation 21 is provided with a limiting slot 32, and a number of elastic cards 30 are engaged in the limiting slot 32.

[0051] The elastic card 30 inside the rotating housing 20 has elastic deformation capability. During assembly, the elastic card 30 is compressed and contracts, and after aligning with the limiting slot 32 of the socket insulation component 21, it resets and snaps into place, achieving axial fixation between the two. The paired limiting pieces 31 contact the outer wall of the socket insulation component 21, playing a limiting and supporting role. In use, the rotating housing 20 and the socket insulation component 21 can be quickly snapped together through the cooperation of the elastic card 30 and the limiting slot 32, without the need for threaded connections or adhesives, resulting in high assembly efficiency. The cooperation between the elastic card 30 and the limiting slot 32 is firm, and the setting of the limiting pieces 31 ensures the structural stability of the rotating housing 20 and the socket insulation component 21, improving the convenience and reliability of component assembly.

[0052] To facilitate the installation of the rotating housing 20 and the plug insulator 10, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a limiting rib 62 is fixedly provided on one side of the rotating housing 20, and a limiting groove 63 is provided on the side wall of the second cavity 18 on the plug insulator 10 to cooperate with the limiting rib 62. The limiting rib 62 can be inserted into the limiting groove 63 to limit the axial rotation of the rotating housing 20. A limiting strip 64 is also fixedly provided on the rotating housing 20, and the limiting strip 64 abuts and limits the second cavity 18.

[0053] The limiting rib 62 and the limiting groove 63 can restrict the axial rotation of the rotating housing 20. The limiting spur 64 can further improve the stability of the rotating housing 20 during installation.

[0054] To further prevent accidental contact by operators, it is preferable that the end of the conductive pin 22 located inside the insertion cavity 23 is provided with an anti-accidental contact insulator 33, and the conductive pin 22 is provided with an installation slot 34, with one end of the anti-accidental contact insulator 33 inserted into the installation slot 34.

[0055] The anti-accidental contact insulator 33 can prevent operators from accidentally touching the socket assembly 2 when it is plugged into the plug assembly 1. Structurally, it avoids the risk of personnel accidentally touching the conductive pin 22 before plugging, effectively preventing electric shock accidents. At the same time, it does not affect the normal plugging and socket conduction, significantly improving the safety of the connector and complying with the electrical equipment safety design specifications.

[0056] In one embodiment, one end of the plug 11 is provided with an extension rod 65, and the conductive pin 22 and the anti-accidental contact insulator 33 are provided with mating openings to accommodate the extension rod 65. When the plug assembly 1 and the socket assembly 2 are plugged in, the extension rod 65 is correspondingly inserted into the conductive pin 22 and the anti-accidental contact insulator 33.

[0057] To improve the sealing performance of the plug assembly 1, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a threaded connecting tube 35 is provided on one side of the plug insulation 10. The threaded connecting tube 35 is connected to the third cavity 19. One end of the rear cover 16 is sleeved on the outside of the threaded connecting tube 35 and threadedly connected to the threaded connecting tube 35. A second sealing ring 36 is provided between the rear cover 16 and the threaded connecting tube 35. The other end of the rear cover 16 is an inwardly tapering variable diameter structure. A cable sealing ring 37 is provided inside the rear cover 16. One end of the cable sealing ring 37 is sleeved on the outside of the conductive terminal 12.

[0058] The rear cover 16 is detachably connected to the threaded connecting tube 35 via a threaded engagement, facilitating subsequent maintenance. A second sealing ring 36 is positioned between the rear cover 16 and the threaded connecting tube 35, filling the gap between them to form a radial seal. A cable sealing ring 37 is fitted over the conductive terminal 12 and engages with the variable diameter structure of the rear cover 16 to seal the connection between the cable passing through the rear cover 16 and the conductive terminal 12. In use, the threaded connection balances connection strength with ease of assembly and disassembly. The dual sealing ring design provides sealing protection between the rear cover 16 and the plug insulation 10, and between the cable and the conductive terminal 12, effectively preventing moisture and dust from entering the plug assembly 1 and protecting the core conductive components. Simultaneously, the variable diameter structure of the rear cover 16 adapts to the cable's shape, enhancing the overall sealing and compatibility.

[0059] To facilitate locking the plug assembly 1 and socket assembly 2 after they are plugged in, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a switch assembly 38 is provided inside the plug insulation member 10. The switch assembly 38 is used to lock the plug assembly 1 and socket assembly 2.

[0060] like Figures 8 to 9 As shown, in one embodiment, as a further preferred embodiment, the switch assembly 38 includes a switch sleeve 39, a first switch 40, and a first spring 41. The switch sleeve 39 has a receiving cavity 42 that penetrates the switch sleeve 39. The first switch 40 is disposed in the receiving cavity 42 and is slidably connected to the receiving cavity 42. One end of the first switch 40 extends outside the receiving cavity 42, and the other end has a first receiving groove 43. One end of the first spring 41 is disposed in the first receiving groove 43, and the other end extends into the receiving cavity 42. The first spring 41 is clearance-fitted with the first receiving groove 43. The plug insulator 10 has a mounting groove 44 that mates with the switch sleeve 39. One side of the mounting groove 44 communicates with the second cavity 18, and one side of the mounting groove 44 has a snap-fit ​​slot 45. The switch sleeve 39 has an anti-disengagement support 46 that mates with the snap-fit ​​slot 45. The anti-disengagement support 46 is fixedly connected to the switch sleeve 39. The switch sleeve 39 is disposed in the mounting cavity 49. Inside the groove 44, the anti-detachment support 46 is engaged with the snap-fit ​​groove 45. The plug insulator 10 has a first passage 47 on one side, which corresponds to the receiving cavity 42. The end of the first switch 40 located outside the receiving cavity 42 extends through the first passage 47 to the outside of the plug insulator 10 and is slidably connected to the plug insulator 10. The end of the first spring 41 located inside the receiving cavity 42 abuts against the snap-fit ​​groove 45. The end of the first switch 40 located inside the receiving cavity 42 is fixedly provided with a first locking block 48. The side wall of the switch sleeve block 39 facing the second cavity 18 is provided with a first travel limit groove 49. The first travel limit groove 49 is connected to the receiving cavity 42. The rotating outer shell 20 is provided with a first locking groove 50 corresponding to the first travel limit groove 49. One end of the first locking block 48 passes through the first travel limit groove 49 and extends into the first locking groove 50. The first locking block 48 is slidably connected to the first travel limit groove 49 and the first locking groove 50 respectively.

[0061] The switch sleeve 39 is fixed to the snap-fit ​​groove 45 of the plug insulator 10 via the anti-disengagement support 46, providing a mounting carrier for the first switch 40 and the first spring 41; the first switch 40 slides in the receiving cavity 42, and the first spring 41 provides elastic restoring force. When plugged in, the first locking block 48 passes through the first travel limit groove 49 under the action of the spring and snaps into the first locking groove 50 of the rotating housing 20, thereby locking the plug and socket; pressing the first switch 40 can compress the spring, causing the first locking block 48 to disengage from the first locking groove 50 and release the lock.

[0062] During use, the locking structure is stable and can effectively prevent the plug and socket from accidentally coming off due to vibration, pulling or other reasons during use, ensuring the continuity of energy transmission. It is easy to operate, and locking and unlocking can be completed by simply pressing the switch. At the same time, the snap-fit ​​installation method of the switch sleeve block 39 simplifies the assembly process. The first stroke limit groove 49 guides and limits the locking block, improving the smoothness and reliability of the switch action.

[0063] like Figures 10 to 11 As shown, in another embodiment, and further preferably, the switch assembly 38 includes a switch pad 51, a second switch 52, and a second spring 53. The plug insulator 10 has a locking cavity 54 for mounting the second switch 52. One side of the plug insulator 10 has a second passage 55 communicating with the locking cavity 54, and the other side has a fastening groove 56 communicating with the locking cavity 54. The second switch 52 is disposed within the locking cavity 54 and slidably connected to it. One end of the second switch 52 passes through the second passage 55 and is slidably connected to it. The other end of the second switch 52 has a second receiving groove 57. One end of the second spring 53 is disposed within the second receiving groove 57, and the other end extends into the locking cavity 54. Inside the second cavity 4, the second spring 53 is in clearance fit with the second receiving groove 57, the switch pad 51 is fastened in the fastening groove 56, the end of the second spring 53 located in the locking cavity 54 abuts against the switch pad 51, the end of the second switch 52 located in the locking cavity 54 is fixedly provided with the second locking block 58, the side wall of the second cavity 18 is provided with the second travel limit groove 59, the second travel limit groove 59 is connected to the locking cavity 54, the rotating outer shell 20 is provided with the second locking groove 60 corresponding to the second travel limit groove 59, one end of the second locking block 58 passes through the second travel limit groove 59 and extends into the second locking groove 60, the second locking block 58 is slidably connected with the second travel limit groove 59 and the second locking groove 60 respectively.

[0064] The second switch 52 slides within the locking cavity 54 of the plug insulator 10. One end of the second spring 53 abuts against the switch pad 51, and the other end provides elastic reset force for the second switch 52. After insertion, the second locking block 58 passes through the second travel limit groove 59 under the action of the spring and is engaged in the second locking groove 60 of the rotating housing 20 to achieve locking. Pressing the second switch 52 compresses the spring, and the second locking block 58 disengages from the second locking groove 60 to complete unlocking.

[0065] In use, the structure is more compact. The switch pad 51 is fixed by a snap-fit ​​method, which is convenient to assemble and occupies little space, making it suitable for different installation scenarios. The elastic reset structure of the second spring 53 ensures that the locking block is tightly engaged and the unlocking action is smooth. This not only achieves reliable locking of the plug and socket, but also simplifies the operation process. At the same time, the design of the locking cavity 54 and the travel limit groove ensures the accuracy of the switch assembly 38 and improves the stability of the overall connection.

[0066] Working principle of this invention:

[0067] This invention pre-assembles the plug assembly 1 by first assembling the plug 11, conductive terminal 12, copper tube 13, torsion spring 14, and plastic sleeve 15 in the plug assembly 1. One end of the copper tube 13 is installed on the plug 11, and then the conductive terminal 12 is sleeved on the outside of the end of the copper tube 13 located on the plug 11 to form a continuous conductive path. Then, the torsion spring 14 is interference-fitted with the inner wall of the copper tube 13 to eliminate assembly gaps and improve connection tightness. Then, the plastic sleeve 15 is sleeved on the outside of the copper tube 13, so that one end of the plastic sleeve 15 abuts against the conductive terminal 12, and the other end wraps and fixes the copper tube 13. The above-mentioned scattered components are pre-assembled into a relatively stable whole assembly. Then, the whole assembly is placed into a mold as a single insert, and the plug insulation 10 that wraps the whole assembly is formed by injection molding to achieve fixation. Finally, the back cover 16 is sleeved on the outside of the conductive terminal 12 and detachably connected to the plug insulation 10, thus completing the assembly of the plug assembly 1.

[0068] Reference Figures 2 to 4 In some preferred embodiments, an assembly method is also provided, specifically a plug assembly method, which includes the following steps:

[0069] First, pre-assembly is performed: one end of the copper tube 13 is fitted onto the plug 11 to form an axial fixed connection; then, the end of the conductive terminal 12 is fitted onto the outside of the copper tube 13 located at the end of the plug 11 to construct a continuous conductive path; next, the torsion spring 14 is pressed into the copper tube 13, and the assembly gap is eliminated through interference fit to improve the tightness of the connection; finally, the plastic sleeve 15 is fitted onto the outside of the copper tube 13, so that one end of the plastic sleeve 15 abuts against the end face of the conductive terminal 12 to form a structurally stable pre-assembled component.

[0070] Then, injection molding is performed: the pre-assembled components are placed into the injection mold as a single insert, and the plug insulator 10 is formed by injection molding. During the injection molding process, the molten plastic wraps around the plastic sleeve 15 and fixes it to it, forming a first cavity 17, a second cavity 18 and a third cavity 19. The first cavity 17 accommodates the plug 11, the connection between the conductive terminal 12 and the copper tube 13, the second cavity 18 accommodates the plastic sleeve 15 and the copper tube 13, and the third cavity 19 accommodates the conductive terminal 12.

[0071] Finally, the final assembly is performed: the back cover 16 is fitted onto the outside of the other end of the conductive terminal 12 and threadedly connected to the threaded connecting tube 35 of the plug insulator 10. At the same time, a second sealing ring 36 is provided between the threaded connecting tube 35 and the back cover 16, and a cable sealing ring 37 is provided inside the back cover 16, thus completing the assembly of the plug assembly 1.

[0072] Reference Figures 5 to 7 The socket assembly method includes the following steps:

[0073] First, assemble the conductive pin 22: pass the variable diameter portion 26 of the conductive pin 22 through the variable diameter slot 25 of the socket insulator 21. During the pushing process, the limiting ring 28 on the variable diameter portion 26 squeezes the spring piece 27 of the plug portion 24 to make it expand radially. Continue pushing until the spring piece 27 resets and engages on one side of the limiting ring 28 to form an axial limit. Then, the first sealing ring 29 is embedded in the mounting groove on the outside of the variable diameter portion 26 to form a contact seal with the inner wall of the variable diameter slot 25.

[0074] Then, assemble the rotating housing 20: the rotating housing 20 is sleeved on the outside of the end of the socket insulation 21. During the pushing process, the elastic card 30 inside the rotating housing 20 is compressed and contracted. After it is aligned with the limiting slot 32 of the socket insulation 21, the elastic card 30 is reset and inserted into the limiting slot 32, so as to realize the snap-fit ​​fixation between the rotating housing 20 and the socket insulation 21.

[0075] Finally, install the anti-accidental contact insulator 33: insert the anti-accidental contact insulator 33 into the mounting slot 34 of the conductive pin 22 to structurally avoid the risk of personnel accidentally touching the conductive pin 22 before insertion.

[0076] In some preferred embodiments, the mating method of the coded connector with anti-mismating features is as follows:

[0077] First, prepare for mating: Align the rotating housing 20 of the socket assembly 2 with the second cavity 18 of the plug assembly 1, ensuring that the limiting rib 62 of the rotating housing 20 is accurately aligned with the limiting groove 63 of the plug insulator 10.

[0078] Then, axial insertion is performed: the socket assembly 2 is pushed axially to make the rotating housing 20 slide along the inner wall of the second cavity 18, while the conductive pin 22 is inserted into the plastic sleeve 15 and the copper tube 13 in sequence; the push is continued to make the end of the conductive pin 22 insert into the torsion spring 14, and a tight electrical connection is established with the inner wall of the copper tube 13 through the elastic deformation of the torsion spring 14.

[0079] Finally, the insertion and locking are completed: when the limiting protrusion 64 of the rotating housing 20 abuts against the end face of the second cavity 18, it indicates that the physical insertion is in place; at the same time, the first locking block 48 of the switch assembly 38 automatically slides into the first locking groove 50 of the rotating housing 20 under the elastic force of the first spring 41, and the mechanical locking is confirmed by the audible "click" sound or the tactile change in resistance.

[0080] The method of separation and use includes the following steps:

[0081] First, perform the unlocking operation: Press the first switch 40 along the axis to overcome the elastic force of the first spring 41 and cause the first locking block 48 to exit from the first locking groove 50, thus releasing the mechanical lock.

[0082] Then, perform axial separation: while maintaining the pressed state, pull the socket assembly 2 in the opposite direction along the axis to gradually separate the conductive pin 22 from the torsion spring 14 and disconnect the electrical connection.

[0083] Finally, separation is completed: when the rotating outer shell 20 is completely disengaged from the second cavity 18, the first switch 40 is released, and the first locking block 48 is reset under the action of the first spring 41, ready for the next insertion operation.

[0084] Example 2: See Figure 12 This embodiment discloses a method for manufacturing a spring contact in a coded connector with anti-misfit design, comprising the following steps:

[0085] Step S1: Based on the materials genome approach, calculate the optimal composition ratio of the composite material using the first algorithm model;

[0086] Step S2: Based on the output parameters of step S1, optimize the heat treatment process parameters using the second algorithm model;

[0087] Step S3: Prepare the spring blank using powder metallurgy and perform heat treatment;

[0088] Step S4: Perform performance testing on the heat-treated spring sheet and feed the test data back to the first algorithm model and the second algorithm model for iterative optimization.

[0089] The composite material, by mass percentage, comprises: 85-92% copper matrix, 5-10% reinforcing phase, 1-3% interface modifier, and 2-5% conductive additive. The reinforcing phase is nano-alumina or silicon carbide particles, the interface modifier is a silane coupling agent, and the conductive additive is graphene or carbon nanotubes.

[0090] In practice:

[0091] Step S1: Material composition optimization using the first algorithm model.

[0092] The first algorithm model is a multiple linear regression model, used to predict the elastic modulus of composite materials. and conductivity The first algorithm model is built upon a historical dataset containing experimental data from 100 sets of shrapnel materials with different compositions. The experimental data includes compositional ratios and measured properties (elastic modulus and electrical conductivity). The formula for the first algorithm model is as follows:

[0093] in:

[0094] ; ;

[0095] Indicates the percentage of copper matrix by mass, ranging from 85% to 92%;

[0096] This indicates the percentage of the reinforcing phase by mass, ranging from 5% to 10%.

[0097] Indicates the percentage by mass of the interface modifier, ranging from 1-3%;

[0098] This indicates the percentage of conductive additives by mass, ranging from 2-5%.

[0099] , ; and For the intercept term of the first algorithm model: .

[0100] The first algorithm model training process involves using historical datasets and fitting the coefficients and intercept term using the least squares method to minimize the mean square error between the predicted and measured values. After training, the model's coefficient of determination R² ≥ 0.95.

[0101] Application of the first algorithm model: Setting the target performance elastic modulus and conductivity The optimal composition ratio is calculated by solving the inverse problem of the first algorithm model: percentage of copper matrix mass. Enhance phase quality (Nano-alumina), interface modifier mass percentage (Silane coupling agent), conductive additive mass percentage (Graphene).

[0102] Validate the predicted values:

[0103] =1.0×88+(−0.2)×6+0.1×2+0.2×4+30=88−1.2+0.2+0.8+30=117.8 GPa;

[0104] =0.8×88+(−0.1)×6+0.05×2+0.1×4+20=70.4−0.6+0.1+0.4+20=90.3 %IACS.

[0105] The predicted value is close to the target value, and the error is within an acceptable range (less than 5%).

[0106] Step S2: The heat treatment process is optimized using a second algorithm model. This second algorithm model is a neural network model used to optimize the heat treatment temperature. and time The second algorithm model is constructed based on 50 sets of heat treatment experimental data, including input features (predicted elastic modulus values). and predicted conductivity ) and output parameters (heat treatment temperature and time).

[0107] The second algorithm model training process: The neural network is trained using the backpropagation algorithm. The network structure includes an input layer (2 nodes), a hidden layer (5 nodes), and an output layer (2 nodes). The activation function is ReLU, and the loss function is mean squared error. The simplified formula for the trained model is as follows:

[0108]

[0109]

[0110] in: , , , and bias terms , The specific values ​​obtained through the training process of the neural network are shown in this embodiment.

[0111] Through training, we obtained: .

[0112] and For the bias term of the second algorithm model: =500, =60.

[0113] Second algorithm model application: The output of step S1 and Input the second algorithm model:

[0114] ;

[0115] ;

[0116] Rounding: The output of the second algorithm model is directly used as the heat treatment process parameters.

[0117] Step S3: Preparation process. The blank of the spring is prepared by powder metallurgy: Raw material mixing: Copper powder (88% by mass), nano alumina powder (6%), silane coupling agent (2%) and graphene powder (4%) are put into a ball mill and mixed for 2 hours at a mixing speed of 300 rpm.

[0118] Compression molding: The mixed powder is pressed into a spring blank in a press at a pressure of 500 MPa for a holding time of 5 minutes.

[0119] Heat treatment: The blank of the spring sheet is heat treated at 532 K for 93 minutes and then cooled to room temperature in the furnace.

[0120] Machining: The heat-treated blank is machined into a spring shape, with dimensions consistent with the original spring 27. Step S4: Performance testing and iterative optimization.

[0121] Performance testing was performed on the heat-treated spring sheet: measured elastic modulus. (Adopted according to ASTM E111 standard).

[0122] Measured conductivity (Using the four-probe method).

[0123] Calculate the prediction error:

[0124] ;

[0125] The measured data is fed back to the first and second algorithm models for iterative optimization. Gradient descent is used to update the model coefficients with the goal of minimizing the prediction error. The learning rate for the first algorithm model is set to 0.1, and the learning rate for the second algorithm model is set to 0.05.

[0126] The update example is as follows:

[0127] Update the coefficients of the first algorithm model for ;

[0128] Update the weights of the second algorithm model for .

[0129] Those skilled in the art can adjust the specific value of the learning rate according to the actual error situation, and re-execute steps S1 and S2 until the error is less than 1% (i.e. The iterations are typically performed 2-3 times.

[0130] This method achieves synergistic optimization of material composition and process parameters through the interaction of the first and second algorithm models (the output of the first algorithm model is used as the input of the second algorithm model). It controls material performance at the atomic and microstructure level, solves the problems of insufficient elasticity, low conductivity and large process fluctuations of traditional spring materials, improves connector reliability and lifespan, and meets the requirements of high load and long lifespan of connectors.

[0131] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0132] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coded connector with anti-misinsertion features, comprising a plug assembly (1) and a socket assembly (2) that are mutually adapted and provided with anti-misinsertion protrusions and grooves, characterized in that, The plug assembly (1) includes a plug insulator (10), a plug (11), a conductive terminal (12), a copper tube (13), a torsion spring (14), a plastic sleeve (15), and a back cover (16). The plug insulator (10) has a first cavity (17) inside. The plug insulator (10) has a second cavity (18) on one side that communicates with the first cavity (17), and a third cavity (19) on the other side that communicates with the first cavity (17). The plug (11) is disposed in the first cavity (17). One end of the copper tube (13) passes through the second cavity (18) and extends into the first cavity (17). One end of the copper tube (13) is sleeved on the plug (11). One end of the conductive terminal (12) passes through the third cavity (19) and extends into the first cavity. (17) Inside, the end of the conductive terminal (12) is sleeved on the outside of one end of the copper tube (13) located inside the first cavity (17). The torsion spring (14) is set inside the copper tube (13) and is interference-fitted with the copper tube (13). The plastic sleeve (15) is sleeved on the outside of the copper tube (13). One end of the plastic sleeve (15) is set inside the first cavity (17) and the end abuts against the conductive terminal (12). The other end of the plastic sleeve (15) passes through the second cavity (18) and wraps the copper tube (13). The plastic sleeve (15) is fixedly connected to the plug insulator (10) to fix the plug (11), the conductive terminal (12) and the copper tube (13). The back cover (16) is sleeved on the outside of the other end of the conductive terminal (12) and is detachably connected to the plug insulator (10). The plug (11), conductive terminal (12), copper tube (13), torsion spring (14) and plastic sleeve (15) are pre-assembled to form a pre-assembled assembly. The pre-assembled assembly is placed into the injection mold as a single insert and the plug insulator (10) is formed by injection molding process. The socket assembly (2) includes a rotating shell (20), a socket insulator (21) and a conductive pin (22). The socket insulator (21) is provided with a plug cavity (23) that passes through both ends of the socket insulator (21). One end of the plug cavity (23) is provided with a plug part (24). One end of the conductive pin (22) passes through the plug part (24) and extends to the other end of the plug cavity (23). The conductive pin (22) is engaged with the plug part (24). The rotating shell (20) is located at the other end of the plug cavity (23). The rotating shell (20) is sleeved on the outside of the end of the socket insulator (21) and engaged with the socket insulator (21). Among them, a number of spring pieces (27) are fixedly provided at one end of the plug-in part (24). The method for preparing the shrapnel includes the following steps: Step S1: Based on the materials genome method, calculate the optimal composition ratio of the composite material using the first algorithm model; wherein, the composite material includes, by mass percentage: 85-92% copper matrix, 5-10% reinforcing phase, 1-3% interface modifier and 2-5% conductive additive, the reinforcing phase is nano-alumina or silicon carbide particles, the interface modifier is silane coupling agent, and the conductive additive is graphene or carbon nanotubes. Step S2: Based on the output parameters of Step S1, optimize the heat treatment process parameters using the second algorithm model; Second algorithm model training process: Train the neural network using the backpropagation algorithm. The network structure includes an input layer (2 nodes), a hidden layer (5 nodes), and an output layer (2 nodes); The activation function is the ReLU function, and the loss function is the mean squared error; Step S3: Prepare a spring blank using powder metallurgy and perform heat treatment; the powder metallurgy process includes: mixing copper powder, nano-alumina powder, silane coupling agent and graphene powder in a ball mill at a ratio of 88%:6%:2%:4% for 2 hours at a mixing speed of 300 rpm; pressing the spring blank in a press at a pressure of 500 MPa for 5 minutes; heat-treating the spring blank at 532 K for 93 minutes and cooling it to room temperature in the furnace; and machining the heat-treated blank into a spring shape. Step S4: Perform performance testing on the heat-treated spring sheet and feed the test data back to the first algorithm model and the second algorithm model for iterative optimization.

2. The coded connector with anti-mis-mating feature according to claim 1, characterized in that, The plug-in part (24) is provided with a variable diameter slot (25) that passes through the plug-in part (24). The conductive pin (22) is provided with a variable diameter part (26) that cooperates with the variable diameter slot (25). The variable diameter part (26) is fixedly connected to the conductive pin (22). Several spring pieces (27) are arranged in a circumferential array and one end shrinks towards the center. The end of the variable diameter part (26) is provided with a limiting ring (28) that cooperates with the several spring pieces (27). The limiting ring (28) is fixedly connected to the variable diameter part (26).

3. A coded connector with anti-mis-mating feature according to claim 2, characterized in that, The variable diameter section (26) is provided with a first sealing ring (29), which is embedded in the outside of the variable diameter section (26) and the outside of the first sealing ring (29) contacts and seals the inner wall of the variable diameter groove (25).

4. A coded connector with anti-mis-mating feature according to claim 3, characterized in that, The rotating outer shell (20) is fixedly provided with several elastic cards (30) and several pairs of limiting pieces (31). A pair of limiting pieces (31) is provided between two adjacent elastic cards (30). One end of the socket insulation component (21) is provided with a limiting card slot (32). Several elastic cards (30) are snapped into the limiting card slot (32).

5. A coded connector with anti-mis-mating feature according to claim 4, characterized in that, The conductive pin (22) is provided with an anti-accidental contact insulator (33) at one end inside the insertion cavity (23). The conductive pin (22) is provided with an installation slot (34), and one end of the anti-accidental contact insulator (33) is inserted into the installation slot (34).

6. A coded connector with anti-mis-mating feature according to claim 5, characterized in that, A threaded connecting tube (35) is provided on one side of the plug insulator (10). The threaded connecting tube (35) is connected to the third cavity (19). One end of the rear cover (16) is sleeved on the outside of the threaded connecting tube (35) and threadedly connected to the threaded connecting tube (35). A second sealing ring (36) is provided between the rear cover (16) and the threaded connecting tube (35). The other end of the rear cover (16) is an inwardly shrinking variable diameter structure. A cable sealing ring (37) is provided inside the rear cover (16). One end of the cable sealing ring (37) is sleeved on the outside of the conductive terminal (12). A switch assembly (38) is provided inside the plug insulator (10). The switch assembly (38) is used to lock the plug assembly (1) and the socket assembly (2).

7. A coded connector with anti-mis-mating feature according to claim 6, characterized in that, The switch assembly includes a switch sleeve, a first switch, and a first spring. The switch sleeve has a cavity extending through it. The first switch is disposed within the cavity and slidably connected to it. One end of the first switch extends outside the cavity, and the other end has a first receiving groove. One end of the first spring is disposed within the first receiving groove, and the other end extends into the cavity. The first spring and the first receiving groove are in clearance fit. The plug insulator has a mounting groove that mates with the switch sleeve. One side of the mounting groove communicates with a second cavity, and one side of the mounting groove has a snap-fit ​​opening. The switch sleeve has an anti-disengagement support that mates with the snap-fit ​​opening. The anti-disengagement support is fixedly connected to the switch sleeve. The switch sleeve is disposed within the mounting groove, and the anti-disengagement support is in lock-fit. The plug has a slotted engagement mechanism. A first through-hole corresponding to the receiving cavity is provided on one side of the plug insulator. One end of the first switch, located outside the receiving cavity, extends through the first through-hole to the outside of the plug insulator and is slidably connected to it. One end of the first spring, located inside the receiving cavity, abuts against the slotted engagement mechanism. A first locking block is fixedly provided at one end of the first switch inside the receiving cavity. A first travel limiting groove is provided on the side wall of the switch sleeve facing the second cavity. The first travel limiting groove communicates with the receiving cavity. A first locking groove, corresponding to the first travel limiting groove, is provided on the rotating outer shell. One end of the first locking block passes through the first travel limiting groove and extends into the first locking groove. The first locking block is slidably connected to both the first travel limiting groove and the first locking groove.

8. A coded connector with anti-mis-mating feature according to claim 5, characterized in that, The first algorithm model is a multiple linear regression model, used to predict the elastic modulus of composite materials. and conductivity The first algorithm model is built upon a historical dataset containing experimental data from 100 sets of shrapnel materials with different compositions. The experimental data includes compositional ratios, measured properties, elastic modulus, and electrical conductivity. The formula for the first algorithm model is as follows: in: ； ； Indicates the percentage of copper matrix by mass, ranging from 85% to 92%; This indicates the percentage of the reinforcing phase by mass, ranging from 5% to 10%. Indicates the percentage by mass of the interface modifier, ranging from 1-3%; This indicates the percentage of conductive additives by mass, ranging from 2-5%. ， ； and For the intercept term of the first algorithm model: ; The first algorithm model training process: using historical datasets, the least squares method is used to fit the coefficients and intercept term, minimizing the mean square error between the predicted and measured values; after training, the model's coefficient of determination R² ≥ 0.95; The second algorithm model is a neural network model, used to optimize the heat treatment temperature. and time The second algorithm model is constructed based on 50 sets of heat treatment experimental data, including input features (predicted elastic modulus values). and predicted conductivity ) and output parameters (heat treatment temperature and time); Simplified formula for the trained model: in: , , , and bias terms , The specific values ​​are obtained through the training process of the neural network. ; and For the bias term of the second algorithm model: =500, =60.

9. A method for assembling a coded connector with anti-mis-mating features as described in claim 7, characterized in that, The assembly steps for the plug assembly (1) are as follows: S1: Fit one end of the copper tube (13) onto the plug (11) to form an axial fixed connection; S2: The end of the conductive terminal (12) is sleeved on the outside of the copper tube (13) at one end of the plug (11) to form a conductive path; S3: Press the torsion spring (14) into the copper tube (13) to eliminate the assembly gap through interference fit; S4: Place the plastic sleeve (15) on the outside of the copper tube (13) so that one end of the plastic sleeve (15) abuts against the end face of the conductive terminal (12) to form a pre-assembled assembly; S5: The pre-assembled component is placed into the injection mold as a single insert, and a plug insulator (10) is formed by injection molding process. The plug insulator (10) wraps around the plastic sleeve (15) and is fixedly connected to it, while forming a first cavity (17), a second cavity (18) and a third cavity (19). S6: Place the back cover (16) on the outside of the other end of the conductive terminal (12) and thread it to the threaded connection tube (35) of the plug insulator (10) to complete the assembly of the plug assembly (1).

10. A method of using a coded connector with anti-mis-mating feature as described in claim 7, characterized in that: T1: Align the rotating housing (20) of the socket assembly (2) with the second cavity (18) of the plug assembly (1) so that the limiting rib (62) is aligned with the limiting groove (63); T2: Axially push the socket assembly (2) to make the rotating housing (20) slide along the inner wall of the second cavity (18), while the conductive pin (22) is inserted into the plastic sleeve (15) and the copper tube (13). T3: Continue pushing the conductive pin (22) into the torsion spring (14) to establish an electrical connection through the elastic deformation of the torsion spring (14).

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