A connector

Abstract

The application provides a connector, which comprises a first connecting structure and a second connecting structure which are plugged together. The first connecting structure comprises a first positioning assembly and a first terminal, the first terminal is arranged in a first positioning cavity of the first positioning assembly, and a first annular gap is formed between the first terminal and a side wall of the first positioning cavity; the second connecting structure comprises a second positioning assembly and a second terminal, the second terminal is arranged in a second positioning cavity of the second positioning assembly, and a second annular gap is formed between the second terminal and a side wall of the second positioning cavity. When the first positioning assembly is butted with the second positioning assembly and the first terminal is plugged into the second terminal, the first terminal and the second terminal respectively float radially in the corresponding annular gaps to realize correct abutment. The plug-in contact areas of the first terminal and the second terminal are both covered with a composite plating layer. The application can reduce unilateral scraping and eccentric wear caused by eccentric plugging and reduce the risk of contact resistance rising.

Description

Technical Field

[0001] This application relates to the field of new energy electrical connectors, and more particularly to a connector. Background Technology

[0002] Connectors are widely used in vehicle charging and discharging, battery pack connections, mobile power supply equipment, and other high-current electrical connection scenarios. In applications such as new energy vehicles and mobile charging equipment for vehicles with motherboards and daughterboards, connectors typically need to be repeatedly plugged and unplugged during vehicle operation, charging, battery swapping, or maintenance. The male and female terminals inside the connector need to maintain stable electrical contact performance after multiple plugging and unplugging.

[0003] Existing connectors typically use housings, insulating positioning elements, or terminal fixing structures to install and position the power terminals, ensuring that the male terminal can be inserted into the female terminal to form an electrical connection. To improve conductivity and abrasion resistance, some connectors also have a silver plating layer, composite plating layer, or other conductive and abrasion-resistant layers on the contact area of ​​the terminals.

[0004] However, in actual use, due to factors such as connector assembly tolerances, insertion angle deviations, vehicle vibrations, and cable pulling, the male and female terminals are prone to misalignment during the initial insertion process. If the terminals are rigidly fixed in the housing or positioning components, there is a lack of radial clearance space between the terminals to compensate for assembly deviations. When the male terminal is inserted into the female terminal, it is easy to cause scratching or biasing on one side of the contact area of ​​the female terminal, resulting in wear of the plating in the contact area, uneven wear of the terminal, and increased contact resistance. This, in turn, affects the service life and contact reliability of the connector in high-frequency insertion and removal scenarios. Summary of the Invention

[0005] In view of this, it is necessary to provide a connector suitable for high insertion and removal scenarios to solve the above problems.

[0006] Embodiments of this application provide a connector, including a first connection structure and a second connection structure that are mutually plugged into each other; The first connection structure includes a first positioning component and a first terminal. The first positioning component has a first positioning cavity, and the first terminal passes through the first positioning cavity and forms a first annular gap with the side wall of the first positioning cavity. The second connection structure includes a second positioning component and a second terminal. The second positioning component has a second positioning cavity, and the second terminal passes through the second positioning cavity and forms a second annular gap with the side wall of the second positioning cavity. When the first positioning component and the second positioning component are docked together, and the first terminal is inserted into the second terminal, the first terminal floats radially relative to the first positioning component within the first annular gap, and the second terminal floats radially relative to the second positioning component within the second annular gap, so that the first terminal and the second terminal are aligned and abutted together. The first terminal and the second terminal each have oppositely arranged plug-in contact areas, and both plug-in contact areas are covered with a composite coating.

[0007] In at least one embodiment of this application, the first positioning component and the second positioning component are coaxially arranged, and when viewed along the axial direction of the first positioning component, the radial width of one side of the first annular gap is smaller than the radial width of one side of the second annular gap. The radial width of the first annular gap on one side is 0.02mm-0.07mm, and the radial width of the second annular gap on one side is 0.04mm-0.15mm.

[0008] In at least one embodiment of this application, the composite plating layer includes a copper underlayer, a pre-plated silver layer, and a graphite silver plating layer disposed sequentially, wherein the copper underlayer covers the plug-in contact area; The thickness of the copper substrate is 1μm-3μm, the thickness of the pre-plated silver layer is 1μm-3μm, and the thickness of the graphite silver plating layer is 5μm-8μm.

[0009] In at least one embodiment of this application, the first positioning component includes a first positioning member and a first fixing member that are inserted into each other, the first terminal is respectively disposed in the first positioning member and the first fixing member, the first connection structure further includes a first housing, the first positioning member and the first fixing member are sequentially disposed in the first housing along the insertion direction, the first positioning member abuts against the first housing, and the end of the first fixing member facing away from the first positioning member is engaged with the first housing. The outer peripheral surface of the first fixing member is provided with a plurality of first fixing parts, the plurality of first fixing parts are arranged along the circumference of the first fixing member, and the first fixing parts extend radially along the first fixing member and are inclined, and the plurality of first fixing parts are interference fit with the inner wall of the first housing.

[0010] In at least one embodiment of this application, the second positioning component includes a second positioning member and a second fixing member that are inserted into each other, the second terminal is respectively disposed in the second positioning member and the second fixing member, the second connection structure further includes a second housing, the second positioning member and the second fixing member are sequentially disposed in the second housing along the insertion direction, the second positioning member abuts against the second housing, and the end of the second fixing member facing away from the second positioning member is engaged with the second housing; The outer peripheral surface of the second fixing member is provided with a plurality of second fixing parts, the plurality of second fixing parts are arranged along the circumference of the second fixing member, and the second fixing parts extend radially along the second fixing member and are inclined, and the plurality of second fixing parts are interference fit with the inner wall of the second housing.

[0011] In at least one embodiment of this application, the second terminal includes a body and a retainer sleeved on the outer periphery of the body. The body includes a plurality of elastic portions spaced apart in the circumferential direction, and the plurality of elastic portions surround to form a plug-in cavity for the first terminal to be inserted. The elastic part has a contact surface and an arc-shaped surface extending along the insertion direction on the side facing the insertion cavity. The arc-shaped surface is located on opposite sides of the contact surface. The elastic part is formed by stamping from one side of the contact surface toward the side away from the contact surface. The retainer has an arc-shaped guide portion at one end near the insertion direction of the first terminal, and the retainer also has a plurality of spring pieces, each of which abuts against the side of each elastic portion away from the insertion cavity.

[0012] In at least one embodiment of this application, a mating cavity is formed between the first housing and the first positioning member, and a first guide portion is formed extending from the first housing toward the mating cavity, the first guide portion being spaced apart circumferentially along the first housing; The second housing extends in a direction away from the second terminal and has a second guide portion formed thereon, the second guide portion being circumferentially spaced along the outer peripheral surface of the second housing; When the first connecting structure and the second connecting structure are plugged into each other, the second housing portion extends into the interlocking cavity, and the first guide portion and the second guide portion are plugged into each other to restrict the skewed insertion of the first terminal relative to the second terminal.

[0013] In at least one embodiment of this application, the connector further includes a signal component, the signal component comprising a conductive element and a signal element; The conductive element is located on the side of the second positioning element away from the second terminal, and the signal element is located on the side of the first positioning element facing the first terminal. When the first connection structure and the second connection structure are plugged into each other, the conductive element and the signal element abut against each other to conduct electricity and form a signal circuit.

[0014] In at least one embodiment of this application, the first terminal is crimped with a cable, and the first connection structure further includes a limiting member. The limiting member abuts against the inner peripheral surface of the first housing and is located on the side of the first fixing member away from the first terminal. The cable passes through the limiting member and is interference-fitted with the limiting member.

[0015] In at least one embodiment of this application, the first housing has a cable outlet at one end away from the first terminal. The cable extends from the first terminal toward the limiting member and passes through the cable outlet. The cable abuts against the wall of the cable outlet. The limiting member and the cable outlet are spaced apart to jointly restrict the movement of the cable relative to the first housing.

[0016] The connector provided above forms a first positioning cavity in a first positioning component, and a first terminal passes through the first positioning cavity and forms a first annular gap with the side wall of the first positioning cavity. At the same time, a second positioning cavity is formed in a second positioning component, and a second terminal passes through the second positioning cavity and forms a second annular gap with the side wall of the second positioning cavity. This allows the first terminal and the second terminal to both float radially relative to their respective positioning components during the insertion process.

[0017] Therefore, when there are assembly tolerances, insertion angle deviations or slight radial deviations between the first connecting structure and the second connecting structure, the first terminal can be radially position compensated within the first annular gap, and the second terminal can be radially position compensated within the second annular gap, so that the first terminal and the second terminal are gradually adjusted to be aligned and abutted during the insertion process, reducing the situation where the first terminal is forcibly inserted into the second terminal in an oblique posture.

[0018] Compared to connectors where terminals are rigidly fixed within the housing or positioning element, this application reduces the risk of unilateral bias, scratching, and uneven wear during the initial mating of the first and second terminals, thus minimizing abnormal wear in the mating contact area. Furthermore, both the first and second terminals are coated with a composite plating layer, which enhances the conductivity and wear resistance of the mating contact area while ensuring proper terminal alignment. This reduces the risk of plating wear and increased contact resistance caused by repeated mating and unmating, thereby improving the connector's contact reliability and lifespan in frequent mating and unmating scenarios. Attached Figure Description

[0019] Figure 1This is a perspective view of the first connection structure and the second connection structure in an embodiment of this application, showing their interlocking state.

[0020] Figure 2 for Figure 1 A cross-sectional view of the interconnected state.

[0021] Figure 3 for Figure 2 Enlarged view of part A.

[0022] Figure 4 This is a cross-sectional view of the first connection structure in an embodiment of this application.

[0023] Figure 5 for Figure 4 Enlarged view of part B of the first connecting structure.

[0024] Figure 6 for Figure 4 Partial anatomical view of the first connecting structure.

[0025] Figure 7 for Figure 4 A three-dimensional cross-sectional view of the first connecting structure.

[0026] Figure 8 This is a cross-sectional view of the second connection structure in the embodiments of this application.

[0027] Figure 9 for Figure 8 Enlarged view of section C of the second connecting structure.

[0028] Figure 10 for Figure 8 A three-dimensional cross-sectional view of the second connecting structure.

[0029] Figure 11 for Figure 8 A perspective view of the second positioning component of the second connection structure.

[0030] Figure 12 for Figure 8 An exploded perspective view of the second terminal of the second connection structure.

[0031] Explanation of main component symbols 100. Connector; 10. First connecting structure; 11. First positioning assembly; 111. First positioning cavity; 112. First positioning element; 113. First fixing element; 1131. First fixing part; 12. First terminal; 13. First annular gap; 14. First housing; 141. Mating cavity; 142. First guide part; 143. Outlet hole; 15. Cable; 16. Limiting element; 20. Second connecting structure; 21. Second positioning assembly; 211. Second positioning... 212. Second positioning cavity; 213. Second fixing member; 2131. Second fixing part; 22. Second terminal; 221. Main body; 2211. Elastic part; 2212. Insertion cavity; 2213. Contact surface; 2214. Arc-shaped surface; 222. Holding member; 2221. Arc-shaped guide part; 2222. Spring piece; 23. Second annular gap; 24. Second housing; 241. Second guide part; 30. Signal assembly; 31. Conductive element; 32. Signal element. Detailed Implementation

[0032] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0033] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0034] Embodiments of this application provide a connector, including a first connection structure and a second connection structure that are mutually plugged into each other; The first connection structure includes a first positioning component and a first terminal. The first positioning component has a first positioning cavity, and the first terminal passes through the first positioning cavity and forms a first annular gap with the side wall of the first positioning cavity. The second connection structure includes a second positioning component and a second terminal. The second positioning component has a second positioning cavity, and the second terminal passes through the second positioning cavity and forms a second annular gap with the side wall of the second positioning cavity. When the first positioning component and the second positioning component are docked together, and the first terminal is inserted into the second terminal, the first terminal floats radially relative to the first positioning component within the first annular gap, and the second terminal floats radially relative to the second positioning component within the second annular gap, so that the first terminal and the second terminal are aligned and abutted together. The first terminal and the second terminal each have oppositely arranged plug-in contact areas, and both plug-in contact areas are covered with a composite coating.

[0035] The connector provided above forms a first positioning cavity in a first positioning component, and a first terminal passes through the first positioning cavity and forms a first annular gap with the side wall of the first positioning cavity. At the same time, a second positioning cavity is formed in a second positioning component, and a second terminal passes through the second positioning cavity and forms a second annular gap with the side wall of the second positioning cavity. This allows the first terminal and the second terminal to both float radially relative to their respective positioning components during the insertion process.

[0036] Therefore, when there are assembly tolerances, insertion angle deviations or slight radial deviations between the first connecting structure and the second connecting structure, the first terminal can be radially position compensated within the first annular gap, and the second terminal can be radially position compensated within the second annular gap, so that the first terminal and the second terminal are gradually adjusted to be aligned and abutted during the insertion process, reducing the situation where the first terminal is forcibly inserted into the second terminal in an oblique posture.

[0037] Compared to connectors where terminals are rigidly fixed within the housing or positioning element, this application reduces the risk of unilateral bias, scratching, and uneven wear during the initial mating of the first and second terminals, thus minimizing abnormal wear in the mating contact area. Furthermore, both the first and second terminals are coated with a composite plating layer, which enhances the conductivity and wear resistance of the mating contact area while ensuring proper terminal alignment. This reduces the risk of plating wear and increased contact resistance caused by repeated mating and unmating, thereby improving the connector's contact reliability and lifespan in frequent mating and unmating scenarios.

[0038] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0039] Please see Figures 1-12 This application provides a connector 100, which includes a first connecting structure 10 and a second connecting structure 20. The first connecting structure 10 and the second connecting structure 20 are capable of being plugged in and mated together in a direction that brings them closer together, so as to form an electrical connection between the first connecting structure 10 and the second connecting structure 20. In this embodiment, the first connecting structure 10 can be used as a male plug-in terminal, and the second connecting structure 20 can be used as a female plug-in terminal. In other embodiments, the specific male and female attributes of the first connecting structure 10 and the second connecting structure 20 can also be adjusted according to the product installation direction, cable layout direction, or usage scenario.

[0040] The first connection structure 10 includes a first positioning component 11 and a first terminal 12. The first positioning component 11 is used to install and position the first terminal 12. The first positioning component 11 has a first positioning cavity 111, and the first terminal 12 passes through the first positioning cavity 111. The outer peripheral surface of the first terminal 12 is not completely fitted with the sidewall of the first positioning cavity 111, but forms a first annular gap 13. The first annular gap 13 is distributed circumferentially along the first terminal 12, so that while the first terminal 12 is held by the first positioning component 11, it can still produce a slight radial float within the range allowed by the first annular gap 13.

[0041] The second connection structure 20 includes a second positioning component 21 and a second terminal 22. The second positioning component 21 is used to install and position the second terminal 22. The second positioning component 21 has a second positioning cavity 211, and the second terminal 22 passes through the second positioning cavity 211. A second annular gap 23 is formed between the outer peripheral surface of the second terminal 22 and the side wall of the second positioning cavity 211. The second annular gap 23 is distributed circumferentially along the second terminal 22, so that while the second terminal 22 is held by the second positioning component 21, it can also produce a slight radial float within the allowable range of the second annular gap 23.

[0042] During the insertion process of the first connecting structure 10 and the second connecting structure 20, the first positioning component 11 gradually approaches and mates with the second positioning component 21, and then the first terminal 12 is inserted into the second terminal 22. When there are assembly tolerances, insertion angle deviations, or slight radial deviations between the first terminal 12 and the second terminal 22, the first terminal 12 can be radially adjusted relative to the first positioning component 11 by means of the first annular gap 13, and the second terminal 22 can be radially adjusted relative to the second positioning component 21 by means of the second annular gap 23. In this way, the first terminal 12 and the second terminal 22 are not rigidly inserted, but make slight adjustments according to their contact state during the insertion process, so that the first terminal 12 and the second terminal 22 gradually form an aligned contact.

[0043] It should be noted that the first annular gap 13 and the second annular gap 23 are not intended to allow the first terminal 12 and the second terminal 22 to move freely within the corresponding positioning components, but rather to provide radial compensation space for the first terminal 12 and the second terminal 22 during the insertion process. In other words, the first positioning component 11 and the second positioning component 21 can still provide basic positioning for the corresponding terminals, while the first annular gap 13 and the second annular gap 23 are used to absorb local deviations between the terminals, ensuring that the terminal contact areas are in a more uniform contact state, reducing unilateral force and skewed scratches.

[0044] The first terminal 12 and the second terminal 22 each have opposing insertion contact areas, which are the regions where the first terminal 12 and the second terminal 22 abut against each other and conduct current after insertion. Both insertion contact areas are covered with a composite coating, which covers the surface of the insertion contact areas and improves the conductivity and wear resistance of the insertion contact areas based on the proper alignment of the first terminal 12 and the second terminal 22. Through the radial floating alignment of the terminals and the cooperation of the composite coating on the insertion contact areas, local wear caused by misaligned insertion of the terminals can be reduced, and the risk of increased contact resistance after repeated insertion and removal can be lowered.

[0045] In one specific embodiment, when the first connecting structure 10 and the second connecting structure 20 are inserted into each other, the first positioning component 11 and the second positioning component 21 are coaxially arranged. Here, coaxial arrangement means that the first positioning component 11 and the second positioning component 21 have a basically consistent central axis in the insertion direction of the connector 100, so that the first terminal 12 and the second terminal 22 have a basic axial alignment relationship before insertion.

[0046] Viewed along the axial direction of the first positioning component 11, the radial width of the first annular gap 13 on one side is smaller than the radial width of the second annular gap 23 on one side. The radial width of the first annular gap 13 on one side can be understood as the pre-reserved interval width on one radial side between the outer peripheral surface of the first terminal 12 and the sidewall of the first positioning cavity 111; the radial width of the second annular gap 23 on one side can be understood as the pre-reserved interval width on one radial side between the outer peripheral surface of the second terminal 22 and the sidewall of the second positioning cavity 211.

[0047] In this embodiment, the radial width of the first annular gap 13 on one side is 0.02mm-0.07mm, and the radial width of the second annular gap 23 on one side is 0.04mm-0.15mm. Since the first terminal 12 serves as the insertion end, if the first annular gap 13 is too large, the first terminal 12 is prone to significant sway before inserting the second terminal 22, which is detrimental to insertion stability. Therefore, setting the first annular gap 13 to a smaller radial width on one side allows the first terminal 12 to have a slight radial compensation capability while still maintaining a relatively stable insertion posture.

[0048] The second terminal 22, serving as the receiving end that mates with the first terminal 12, typically forms an interference-fit elastic contact after insertion. That is, during the insertion of the first terminal 12 into the second terminal 22, the second terminal 22 not only needs to make radial clearance according to the actual insertion position of the first terminal 12, but also experiences a certain degree of radial expansion due to the insertion compression of the first terminal 12. If the second annular gap 23 is too small, the second positioning component 21 may easily restrict the radial expansion of the second terminal 22, causing localized force concentration in the second terminal 22, thereby increasing the risk of biasing, scratching, or uneven contact between the first terminal 12 and the second terminal 22.

[0049] Therefore, in this embodiment, the second annular gap 23 is set to be larger than the first annular gap 13. On the one hand, the larger second annular gap 23 can provide a larger radial alignment compensation space for the second terminal 22, so that the second terminal 22 can adapt to the insertion position of the first terminal 12; on the other hand, the larger second annular gap 23 can also reserve space for the elastic expansion of the second terminal 22 during the interference fit process, so as to avoid the second terminal 22 being overly constrained by the second positioning component 21.

[0050] With the above configuration, a small radial float is formed on the first terminal 12 side to ensure the stability of the insertion posture of the first terminal 12; a larger radial float is formed on the second terminal 22 side to simultaneously meet the radial alignment compensation and elastic expansion requirements of the second terminal 22. When the two work together, they can reduce the shaking of the first terminal 12 before insertion and reduce the local stress concentration of the second terminal 22 during the interference fit process, thereby improving the stability of the alignment between the first terminal 12 and the second terminal 22.

[0051] In one specific embodiment, the insertion contact areas where the first terminal 12 and the second terminal 22 abut against each other are covered with a composite plating layer. The composite plating layer is disposed on the surface of the insertion contact area and directly participates in electrical contact as the first terminal 12 and the second terminal 22 are inserted and abutted.

[0052] Specifically, the composite plating layer includes a copper underlayer, a pre-plated silver layer, and a graphite silver plating layer arranged sequentially. The copper underlayer is directly applied to the surface of the insertion contact area, the pre-plated silver layer is applied to the side of the copper underlayer facing away from the insertion contact area, and the graphite silver plating layer is applied to the side of the pre-plated silver layer facing away from the copper underlayer. In other words, the copper underlayer is located between the terminal substrate and the pre-plated silver layer, the pre-plated silver layer is located between the copper underlayer and the graphite silver plating layer, and the graphite silver plating layer is located on the outside of the composite plating layer, serving as the exposed contact layer when the first terminal 12 and the second terminal 22 are inserted and abutted.

[0053] In this embodiment, the thickness of the copper underlayer is 1μm-3μm, the thickness of the pre-plated silver layer is 1μm-3μm, and the thickness of the graphite silver plating layer is 5μm-8μm. The copper underlayer is used to improve the bonding stability between the composite plating layer and the insertion contact area, the pre-plated silver layer is used to form a conductive transition layer between the copper underlayer and the graphite silver plating layer, and the graphite silver plating layer is used to directly withstand the frictional contact during the insertion process of the first terminal 12 and the second terminal 22.

[0054] By setting the graphite silver plating layer as the outer contact layer of the composite plating layer and making its thickness greater than that of the copper underlayer and the pre-plated silver layer, the insertion contact area can have a better wear-resistant contact foundation during repeated insertion and removal. Since the first terminal 12 and the second terminal 22 can be radially floated and aligned using the first annular gap 13 and the second annular gap 23, the composite plating layer is less likely to experience long-term concentrated wear on one side during insertion, thus helping to maintain the conductivity stability of the insertion contact area.

[0055] In one specific embodiment, the first positioning component 11 includes a first positioning member 112 and a first fixing member 113, which are mutually inserted and engaged. A first terminal 12 is sequentially disposed through the first positioning member 112 and the first fixing member 113, allowing the first terminal 12 to be arranged within the first connecting structure 10 along the insertion direction. The first positioning member 112 is mainly used to form a positioning base for the front end of the first terminal 12, and the first fixing member 113 is mainly used to axially hold the first positioning member 112 within the first housing 14.

[0056] The first connecting structure 10 also includes a first housing 14, within which a first positioning member 112 and a first fixing member 113 are both disposed. Viewed along the insertion direction, the first positioning member 112 and the first fixing member 113 are arranged sequentially, with the first positioning member 112 located on the side of the first terminal 12 facing the second terminal 22, and the first fixing member 113 located on the side of the first positioning member 112 facing away from the second terminal 22. During assembly, the first positioning member 112 is first inserted into the first housing 14 and abuts against the first housing 14, thus initially positioning the first positioning member 112 within the first housing 14. Subsequently, the first fixing member 113 is inserted into the first positioning member 112, and the end of the first fixing member 113 facing away from the first positioning member 112 is engaged with the first housing 14, thereby restricting the movement of the first positioning member 112 and the first fixing member 113 relative to the first housing 14 along the insertion direction.

[0057] In one specific embodiment, the first fixing member 113 also abuts against the first terminal 12 to restrict the movement of the first terminal 12 relative to the first housing 14 in the insertion direction. Specifically, the first terminal 12 passes through the first fixing member 113, and the first fixing member 113 can abut against the stepped surface, flange surface or axial limiting surface of the first terminal 12 on the side opposite to the second terminal 22, so that the first terminal 12 is not easily axially moved relative to the first positioning component 11 when subjected to insertion and extraction force or cable 15 tension.

[0058] In other words, the first fixing member 113, on the one hand, maintains the stable installation of the first positioning assembly 11 within the first housing 14 by engaging with the first housing 14 and by interfering with the inner wall of the first housing 14 through the first fixing part 1131; on the other hand, the first fixing member 113 abuts against the first terminal 12, thereby axially limiting the first terminal 12. It should be noted that the abutment of the first fixing member 113 against the first terminal 12 is mainly used to restrict the movement of the first terminal 12 along the insertion direction, and not to restrict the slight radial floating of the first terminal 12 within the first annular gap 13. Therefore, the first terminal 12 can maintain axial assembly stability while also achieving radial alignment compensation through the first annular gap 13 during insertion.

[0059] The outer peripheral surface of the first fixing member 113 is provided with a plurality of first fixing portions 1131, which are spaced apart circumferentially along the first fixing member 113. The first fixing portions 1131 extend radially outward along the first fixing member 113 and are inclined relative to the outer peripheral surface of the first fixing member 113. When the first fixing member 113 is installed into the first housing 14, the first fixing portions 1131 can form an interference fit with the inner wall of the first housing 14, so that the first fixing member 113 is stably held in the first housing 14 by the plurality of first fixing portions 1131.

[0060] Since multiple first fixing parts 1131 are arranged circumferentially along the first fixing member 113, the first fixing member 113 can provide support and limit the first housing 14 at multiple positions in the circumferential direction, reducing the first fixing member 113 from swaying or loosening within the first housing 14. The inclined arrangement of the first fixing parts 1131 also facilitates a certain amount of elastic clearance when the first fixing member 113 is installed into the first housing 14, and forms a pressing effect on the inner wall of the first housing 14 after assembly.

[0061] It should be noted that the first fixing member 113 and the first fixing part 1131 are mainly used to improve the assembly stability between the first positioning component 11 and the first housing 14, and are not used to completely clamp and fix the first terminal 12 relative to the first positioning component 11. The first terminal 12 still retains radial floating margin relative to the first positioning component 11 through the first annular gap 13. In this way, the first connecting structure 10 can maintain overall assembly stability through the first positioning member 112, the first fixing member 113 and the first housing 14, and also allow the first terminal 12 to have radial floating space for centering compensation during the insertion process.

[0062] In one specific embodiment, the second positioning component 21 includes a second positioning member 212 and a second fixing member 213, which are interlocked. A second terminal 22 passes sequentially through the second positioning member 212 and the second fixing member 213, allowing the second terminal 22 to be arranged within the second connecting structure 20 along the insertion direction. The second positioning member 212 primarily forms a positioning base for the front end of the second terminal 22, while the second fixing member 213 primarily axially holds the second positioning member 212 within the second housing 24.

[0063] The second connecting structure 20 also includes a second housing 24, within which the second positioning member 212 and the second fixing member 213 are both disposed. Viewed along the insertion direction, the second positioning member 212 and the second fixing member 213 are arranged sequentially, with the second positioning member 212 located on the side of the second terminal 22 facing the first terminal 12, and the second fixing member 213 located on the side of the second positioning member 212 away from the first terminal 12. During assembly, the second positioning member 212 is inserted into and abuts against the second housing 24, thus initially positioning the second positioning member 212 within the second housing 24. Subsequently, the second fixing member 213 is inserted into the second positioning member 212, and the end of the second fixing member 213 facing away from the second positioning member 212 is engaged with the second housing 24, thereby restricting the movement of the second positioning member 212 and the second fixing member 213 relative to the second housing 24 along the insertion direction.

[0064] The outer peripheral surface of the second fixing member 213 is provided with a plurality of second fixing portions 2131, which are spaced apart circumferentially along the second fixing member 213. The second fixing portions 2131 extend radially outward along the second fixing member 213 and are inclined relative to the outer peripheral surface of the second fixing member 213. When the second fixing member 213 is installed inside the second housing 24, the second fixing portions 2131 can form an interference fit with the inner wall of the second housing 24, so that the second fixing member 213 is stably held within the second housing 24 by the plurality of second fixing portions 2131.

[0065] Because multiple second fixing parts 2131 are arranged circumferentially along the second fixing member 213, the second fixing member 213 can provide support and limit the second housing 24 at multiple positions in the circumferential direction, reducing the possibility of the second fixing member 213 swaying or loosening within the second housing 24. The inclined arrangement of the second fixing parts 2131 also facilitates a certain amount of elastic clearance when the second fixing member 213 is installed into the second housing 24, and forms a pressing effect on the inner wall of the second housing 24 after assembly.

[0066] It should be noted that the second fixing member 213 and the second fixing part 2131 are mainly used to improve the assembly stability between the second positioning component 21 and the second housing 24, and are not used to completely clamp and fix the second terminal 22 relative to the second positioning component 21. The second terminal 22 still retains radial floating margin relative to the second positioning component 21 through the second annular gap 23. In this way, the second connection structure 20 can maintain overall assembly stability through the second positioning member 212, the second fixing member 213 and the second housing 24, and also allow the second terminal 22 to have space for radial alignment compensation and elastic expansion when the first terminal 12 is inserted.

[0067] In one specific embodiment, the second terminal 22 includes a body 221 and a retainer 222, with the retainer 222 sleeved on the outer periphery of the body 221. The body 221 serves as the conductive portion of the second terminal 22 that forms electrical contact with the first terminal 12, and the retainer 222 is used to hold the body 221 from the outer periphery, so that the body 221 maintains a relatively stable elastic contact state during repeated insertion and removal.

[0068] The main body 221 includes a plurality of circumferentially spaced elastic portions 2211, which together form a insertion cavity 2212 for the first terminal 12 to be inserted. There is a gap between adjacent elastic portions 2211, allowing the elastic portions 2211 to elastically deform outwards when the first terminal 12 is inserted into the insertion cavity 2212. After the first terminal 12 is inserted into the insertion cavity 2212, the plurality of elastic portions 2211 can abut against the outer periphery of the first terminal 12 from multiple circumferential positions, thereby forming a circumferentially distributed elastic contact between the second terminal 22 and the first terminal 12.

[0069] The elastic portion 2211 has a contact surface 2213 and an arcuate surface 2214 extending in the insertion direction on the side facing the insertion cavity 2212. The contact surface 2213 is used to form a main electrical contact with the outer peripheral side of the first terminal 12, and the arcuate surface 2214 is located on opposite sides of the contact surface 2213 to form a smooth transition in the edge regions on both sides of the contact surface 2213.

[0070] Specifically, during the forming process of the main body 221, multiple elastic portions 2211 can be first stamped onto the sheet-like conductive blank, and then the elastic portions 2211 can be stamped and shaped on both sides of the contact surface 2213, so that the elastic portions 2211 deform from the side where the contact surface 2213 is located toward the side away from the contact surface 2213, thereby forming arc-shaped surfaces 2214 on opposite sides of the contact surface 2213. In other words, the arc-shaped surfaces 2214 are not a structure added separately afterward, but rather an edge transition structure formed by bending the body of the elastic portion 2211 during the stamping process of the elastic portion 2211.

[0071] Since the arc-shaped surface 2214 is formed by the elastic portion 2211 stamping from the side where the contact surface 2213 is located toward the side away from the contact surface 2213, the sharp edges or burr areas on both sides of the contact surface 2213 that might originally protrude toward the insertion cavity 2212 can be shaped into a smooth transition surface away from the insertion cavity 2212. In this way, when the first terminal 12 is inserted, pulled out, or experiences a slight radial float due to the first annular gap 13 and the second annular gap 23, the outer peripheral surface of the first terminal 12 is less likely to be scratched by the edges on both sides of the elastic portion 2211.

[0072] The retainer 222 has an arc-shaped guide portion 2221 at one end near the insertion direction of the first terminal 12. The arc-shaped guide portion 2221 is used to guide the first terminal 12 into the insertion cavity 2212 before it enters. The arc-shaped guide portion 2221 can be a guide slope, guide fillet, or guide arc surface provided at the end of the retainer 222, so that the first terminal 12 can enter the insertion cavity 2212 more smoothly when it approaches the second terminal 22. It should be noted that the arc-shaped guide portion 2221 is mainly used for guiding the first terminal 12 into the insertion cavity 2212, while the arc surface 2214 is mainly used for edge protection on both sides of the contact surface 2213. The two are different in structural position and function.

[0073] The retainer 222 is also provided with a plurality of spring pieces 2222, which are respectively disposed corresponding to a plurality of elastic portions 2211. Each spring piece 2222 abuts against the side of the corresponding elastic portion 2211 away from the insertion cavity 2212. When the first terminal 12 is inserted into the insertion cavity 2212, the elastic portion 2211 is squeezed by the first terminal 12 and undergoes elastic deformation outward. The spring pieces 2222 can provide retention and rebound support from the outside of the elastic portion 2211, so that the elastic portion 2211 can still maintain contact pressure on the first terminal 12 after deformation.

[0074] With the above structure, the second terminal 22 can form an elastic clamping contact when the first terminal 12 is inserted. Multiple elastic portions 2211 provide circumferentially distributed conductive contact positions, the retainer 222 and the spring 2222 provide an outer retaining force on the elastic portions 2211, and the arc-shaped surface 2214 is formed on both sides of the contact surface 2213 by stamping, which can reduce the risk of scratching the outer peripheral surface of the first terminal 12 by the edge of the elastic portion 2211, thereby helping the second terminal 22 to maintain a more stable contact performance after multiple insertions and removals.

[0075] In one specific embodiment, the end of the first terminal 12 facing the second terminal 22 may also be provided with a frustoconical guide structure, which gradually contracts along the insertion direction of the first terminal 12. When the first terminal 12 is inserted into the second terminal 22, the frustoconical guide structure can first contact the guide portion 2221 at the end of the retainer 222, and guide the first terminal 12 toward the center position of the insertion cavity 2212 with the cooperation of the guide portion 2221.

[0076] By cooperating with the frustoconical guide structure at the end of the first terminal 12 and the guide portion 2221 of the retainer 222, a pre-alignment effect can be formed before the first terminal 12 enters the insertion cavity 2212, reducing the possibility that the first terminal 12 may directly press against the edge of the elastic portion 2211 or a local contact area due to a large initial offset. In this way, when the first terminal 12 subsequently enters the insertion cavity 2212 and contacts the contact surface 2213, it can be inserted in a more centered position, thereby reducing scratching and wear caused by excessive offset.

[0077] In one specific embodiment, a mating cavity 141 is formed between the first housing 14 and the first positioning member 112. The mating cavity 141 is located on the outer periphery of the first terminal 12 and is open toward the second connecting structure 20, so that when the second connecting structure 20 is inserted into the first connecting structure 10, at least a portion of the structure of the second housing 24 can enter the mating cavity 141.

[0078] The first housing 14 extends toward the insertion cavity 141 and has a first guide portion 142 formed thereon, which is spaced apart circumferentially along the first housing 14. The second housing 24 extends away from the second terminal 22 and has a second guide portion 241 formed thereon, which is spaced apart circumferentially along the outer peripheral surface of the second housing 24. The first guide portion 142 and the second guide portion 241 may adopt a rib-guide groove fit, a rib-rib spaced fit, or other guide fit forms that can be inserted into each other and form a lateral limiting position.

[0079] When the first connecting structure 10 and the second connecting structure 20 are plugged into each other, the second housing 24 first extends at least partially into the mating cavity 141, and then the first guide portion 142 and the second guide portion 241 are plugged into each other. Since the first guide portion 142 and the second guide portion 241 are respectively provided on the housing structure, they can pre-guide the relative position of the first connecting structure 10 and the second connecting structure 20 before the first terminal 12 and the second terminal 22 form the main electrical contact.

[0080] Through this pre-guided engagement, the first connecting structure 10 and the second connecting structure 20 can form positional constraints at the shell level during the initial insertion phase, reducing excessive radial offset or tilting of the first connecting structure 10 relative to the second connecting structure 20. Thus, when the first terminal 12 approaches the second terminal 22, it is less likely to directly press against a local area of ​​the second terminal 22 with a significantly skewed posture, thereby reducing the risk of localized scratching and wear between the first terminal 12 and the second terminal 22 due to initial skewed insertion.

[0081] It should be noted that the first guide portion 142 and the second guide portion 241 are mainly used for coarse positioning and pre-guidance in the initial stage of insertion, while the first annular gap 13 and the second annular gap 23 are used for minor radial compensation during the terminal contact process. In other words, the first guide portion 142 and the second guide portion 241 first limit excessive misalignment between the first connecting structure 10 and the second connecting structure 20, and then the first terminal 12 and the second terminal 22 are slightly floated and aligned through the corresponding annular gaps. After the two work together, the first terminal 12 and the second terminal 22 can form a more stable aligned contact during the insertion process.

[0082] In one specific embodiment, the connector 100 further includes a signal component 30, which is used to form a signal conduction state when the first connecting structure 10 and the second connecting structure 20 are inserted or nearly inserted. The signal component 30 includes a conductive element 31 and a signal element 32. The conductive element 31 is disposed on the side of the second positioning element 212 opposite to the second terminal 22, and the signal element 32 is disposed on the side of the first positioning element 112 facing the first terminal 12. Thus, when the first connecting structure 10 and the second connecting structure 20 are inserted into each other, the signal element 32 can move closer to the conductive element 31 along with the first connecting structure 10 and abut against the conductive element 31 after being inserted.

[0083] In this embodiment, the conductive element 31 can be a metal conductive ring, conductive sheet, or other conductive connector. The conductive element 31 is disposed on the second positioning element 212 and spaced apart from the second terminal 22, so that the conductive element 31 is mainly used for signal conduction and not directly as a high-current contact structure between the first terminal 12 and the second terminal 22. By arranging the conductive element 31 on the side of the second positioning element 212 opposite to the second terminal 22, interference with the main insertion path between the first terminal 12 and the second terminal 22 can be avoided.

[0084] The signal element 32 can be a flexible signal contact. Specifically, the signal element 32 may include two contact portions or two flexible contact claws, and the two contact portions can be respectively connected to corresponding signal lines or reserved cables. When the first connecting structure 10 and the second connecting structure 20 are inserted into each other, both contact portions abut against the conductive element 31. The conductive element 31 acts as a bridging conductor, making the two contact portions conductive, thereby forming a signal loop. In other words, the signal loop is not formed through the main current contact between the first terminal 12 and the second terminal 22, but through the contact and conduction between the signal element 32 and the conductive element 31.

[0085] With the above configuration, the signal component 30 can be used to detect whether the first connecting structure 10 and the second connecting structure 20 are properly inserted, or to connect to an external control circuit to coordinate with the signal control of the vehicle, battery pack, or power supply equipment. Since the signal component 32 is located on the side of the first positioning component 112 and the conductive component 31 is located on the side of the second positioning component 212, the two only form contact and conduction after the first connecting structure 10 and the second connecting structure 20 are properly inserted. Therefore, the possibility of mis-conduction when the connector 100 is not properly inserted can be reduced.

[0086] It should be noted that the signal component 30 is independent of the main current contact structures of the first terminal 12 and the second terminal 22. The first terminal 12 and the second terminal 22 are used to form a high-current electrical connection, and the signal component 30 is used to form signal conduction or insertion status feedback. In this way, the connector 100 can both transmit current through the first terminal 12 and the second terminal 22, and provide a basis for insertion status detection or interlocking control through the signal component 30.

[0087] In one specific embodiment, a cable 15 is crimped to the first terminal 12. The cable 15 is used to electrically connect the first terminal 12 to an external circuit, battery pack, power supply equipment, or electrical equipment. The cable 15 can be fixed to the end of the first terminal 12 away from the second terminal 22 by crimping, riveting, or other conductive connection methods, so that a stable conductive connection is formed between the cable 15 and the first terminal 12.

[0088] The first connection structure 10 also includes a limiting member 16, which is disposed within the first housing 14 and located on the side of the first fixing member 113 opposite to the first terminal 12. That is, viewed along the direction in which the cable 15 extends outward from the first terminal 12, the first fixing member 113 is located between the first terminal 12 and the limiting member 16, with the limiting member 16 located behind the first fixing member 113. The limiting member 16 abuts against the inner circumferential surface of the first housing 14, ensuring that the limiting member 16 is stably held within the first housing 14 and is not easily displaced significantly within the first housing 14 due to the swinging or pulling of the cable 15.

[0089] The limiting member 16 is interference-fitted with the cable 15. Specifically, the limiting member 16 may have a limiting hole, limiting channel, or limiting groove for the cable 15 to pass through. At least a portion of the size of the limiting hole, limiting channel, or limiting groove is smaller than or close to the outer circumference of the cable 15, so that the cable 15 forms a pressing contact with the limiting member 16 after passing through it. Through this interference fit, the limiting member 16 can radially clamp or circumferentially cover the cable 15, thereby limiting excessive swinging of the cable 15 relative to the first housing 14.

[0090] During the use of connector 100, cable 15 is susceptible to external pulling, bending, or vibration. If the force on cable 15 is directly transmitted to the first terminal 12, it may cause abnormal displacement of the first terminal 12 within the first positioning component 11, affecting the alignment and contact between the first terminal 12 and the second terminal 22. In this embodiment, the limiting member 16, through an interference fit with cable 15, can constrain cable 15 near the first terminal 12, reducing the direct pulling of external cable 15 movement on the first terminal 12.

[0091] It should be noted that the limiting member 16 is mainly used to limit the movement of the cable 15 relative to the first housing 14, and is not used to limit the slight radial floating of the first terminal 12 within the first annular gap 13. The first terminal 12 can still perform radial compensation relative to the first positioning component 11 within the allowable range of the first annular gap 13. In this way, the first connection structure 10 can both reduce the interference of external forces on the cable 15 on the first terminal 12 through the limiting member 16, and retain the floating alignment capability of the first terminal 12 during the insertion process.

[0092] In one specific embodiment, the first housing 14 has a cable outlet hole 143 at the end opposite to the first terminal 12. The cable outlet hole 143 is used to allow the cable 15 to extend outward from the tail of the first housing 14. One end of the cable 15 is crimped and fixed to the first terminal 12. The cable 15 extends from the first terminal 12 toward the limiting member 16 and continues to pass through the cable outlet hole 143 after passing through the limiting member 16, thereby being led out from the tail of the first housing 14.

[0093] The wall of the outlet hole 143 abuts against the outer periphery of the cable 15, enabling the outlet hole 143 to provide an outer limit for the cable 15 at the point where it leaves the first housing 14. The limiting member 16 and the outlet hole 143 are spaced apart along the extension direction of the cable 15. That is, the limiting member 16 is located inside the first housing 14 near the first fixing member 113, and the outlet hole 143 is located at the tail of the first housing 14. The two members respectively constrain the cable 15 at different positions.

[0094] With the spacing between the limiting member 16 and the outlet hole 143, the cable 15 forms two limiting positions within the first housing 14. The limiting member 16, through an interference fit with the cable 15, presses and limits the section of the cable 15 near the first terminal 12; the outlet hole 143, through its wall abutting against the cable 15, supports and limits the position where the cable 15 extends out of the first housing 14. Thus, when the cable 15 is subjected to external pulling, swinging, or vibration, the displacement of the cable 15 is first weakened by the combined effect of the outlet hole 143 and the limiting member 16, making it less likely to be directly transmitted to the first terminal 12.

[0095] It should be noted that the cable outlet 143 and the limiting member 16 together restrict the movement of the cable 15 relative to the first housing 14, rather than restricting the radial floating of the first terminal 12 within the first annular gap 13. Through this double-layer limiting structure, while maintaining the floating alignment capability of the first terminal 12, the influence of external forces on the insertion position of the first terminal 12 can be reduced, thereby facilitating a stable alignment and contact between the first terminal 12 and the second terminal 22.

[0096] In one specific embodiment, the cable crimped to the second terminal 22 can also employ a limiting structure similar to or the same as that on the first terminal 12 side. Specifically, the second connection structure 20 can have a limiting member inside the second housing 24. The limiting member is located on the side of the second fixing member 213 opposite to the second terminal 22. The cable crimped to the second terminal 22 passes through the limiting member and is interference-fitted with it. A cable outlet hole can also be provided at the end of the second housing 24 opposite to the second terminal 22, allowing the cable crimped to the second terminal 22 to extend outward through the outlet hole. Thus, the cable on the second terminal 22 side can also be spaced and limited by the limiting member and the outlet hole, reducing the impact of external cable swinging or pulling on the insertion position of the second terminal 22.

[0097] In one specific embodiment, at least one of the first connecting structure 10 and the second connecting structure 20 may also be provided with a flange structure, which is used to fix the connector 100 to a vehicle, battery box, mobile power supply equipment, or mounting plate. Specifically, one of the first connecting structure 10 and the second connecting structure 20 may be provided with a fixed flange, and the other may be provided with a detachable flange; the fixed flange is suitable for scenarios of long-term fixed installation, while the detachable flange is suitable for scenarios of temporary fixing or scenarios that require disassembly and assembly according to the usage scenario.

[0098] In some embodiments, the removable flange may include two opposing clamping members that are held to the outer periphery of the corresponding connection structure by screws, bolts, or other fasteners, allowing the corresponding connection structure to be secured to a vehicle mounting plate or equipment mounting base via the removable flange. After charging or power supply is complete, the fasteners can be released to detach the removable flange from the corresponding connection structure.

[0099] It should be noted that the fixed flange and the detachable flange are not limited to being located in either the first connection structure 10 or the second connection structure 20. Depending on the installation requirements of the vehicle, battery box, mobile power supply equipment, or vehicle-to-vehicle power supply scenario, the fixed flange can be located in either the first connection structure 10 or the second connection structure 20, and the detachable flange can be located in the other connection structure, or omitted in scenarios where fixing is not required. Through the above configuration, the connector 100 can accommodate both fixed installation and temporary connection needs.

[0100] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A connector, characterized in that, It includes a first connection structure and a second connection structure that are mutually plugged in and fitted together; The first connection structure includes a first positioning component and a first terminal. The first positioning component has a first positioning cavity, and the first terminal passes through the first positioning cavity and forms a first annular gap with the side wall of the first positioning cavity. The second connection structure includes a second positioning component and a second terminal. The second positioning component has a second positioning cavity, and the second terminal passes through the second positioning cavity and forms a second annular gap with the side wall of the second positioning cavity. When the first positioning component and the second positioning component are docked together, and the first terminal is inserted into the second terminal, the first terminal floats radially relative to the first positioning component within the first annular gap, and the second terminal floats radially relative to the second positioning component within the second annular gap, so that the first terminal and the second terminal are aligned and abutted together. The first terminal and the second terminal each have oppositely arranged plug-in contact areas, and both plug-in contact areas are covered with a composite coating.

2. A connector according to claim 1, characterized in that, The first positioning component and the second positioning component are coaxially arranged. When viewed along the axial direction of the first positioning component, the radial width of one side of the first annular gap is smaller than the radial width of one side of the second annular gap. The radial width of the first annular gap on one side is 0.02mm-0.07mm, and the radial width of the second annular gap on one side is 0.04mm-0.15mm.

3. A connector according to claim 1, characterized in that, The composite coating includes a copper underlayer, a pre-plated silver layer, and a graphite silver plating layer arranged sequentially, with the copper underlayer covering the insertion contact area; The thickness of the copper substrate is 1μm-3μm, the thickness of the pre-plated silver layer is 1μm-3μm, and the thickness of the graphite silver plating layer is 5μm-8μm.

4. A connector according to claim 1, characterized in that, The first positioning component includes a first positioning member and a first fixing member that are inserted into each other. The first terminal is respectively passed through the first positioning member and the first fixing member. The first connection structure also includes a first housing. The first positioning member and the first fixing member are sequentially disposed in the first housing along the insertion direction. The first positioning member abuts against the first housing, and the end of the first fixing member facing away from the first positioning member is engaged with the first housing. The outer peripheral surface of the first fixing member is provided with a plurality of first fixing parts, the plurality of first fixing parts are arranged along the circumference of the first fixing member, and the first fixing parts extend radially along the first fixing member and are inclined, and the plurality of first fixing parts are interference fit with the inner wall of the first housing.

5. A connector according to claim 4, characterized in that, The second positioning component includes a second positioning member and a second fixing member that are inserted into each other. The second terminal is respectively passed through the second positioning member and the second fixing member. The second connection structure also includes a second housing. The second positioning member and the second fixing member are sequentially disposed in the second housing along the insertion direction. The second positioning member abuts against the second housing, and the end of the second fixing member facing away from the second positioning member is engaged with the second housing. The outer peripheral surface of the second fixing member is provided with a plurality of second fixing parts, the plurality of second fixing parts are arranged along the circumference of the second fixing member, and the second fixing parts extend radially along the second fixing member and are inclined, and the plurality of second fixing parts are interference fit with the inner wall of the second housing.

6. A connector according to claim 1, characterized in that, The second terminal includes a body and a retainer sleeved on the outer periphery of the body. The body includes a plurality of elastic portions spaced apart in the circumferential direction, and the plurality of elastic portions surround to form a plug cavity for the first terminal to be inserted. The elastic part has a contact surface and an arc-shaped surface extending along the insertion direction on the side facing the insertion cavity. The arc-shaped surface is located on opposite sides of the contact surface. The elastic part is formed by stamping from one side of the contact surface toward the side away from the contact surface. The retainer has an arc-shaped guide portion at one end near the insertion direction of the first terminal, and the retainer also has a plurality of spring pieces, each of which abuts against the side of each elastic portion away from the insertion cavity.

7. A connector according to claim 5, characterized in that, A mating cavity is formed between the first housing and the first positioning member. A first guide portion is formed extending from the first housing toward the mating cavity. The first guide portion is spaced apart along the circumference of the first housing. The second housing extends in a direction away from the second terminal and has a second guide portion formed thereon, the second guide portion being circumferentially spaced along the outer peripheral surface of the second housing; When the first connecting structure and the second connecting structure are plugged into each other, the second housing portion extends into the interlocking cavity, and the first guide portion and the second guide portion are plugged into each other to restrict the skewed insertion of the first terminal relative to the second terminal.

8. A connector according to claim 5, characterized in that, The connector also includes a signal component, which includes conductive elements and signal elements; The conductive element is located on the side of the second positioning element away from the second terminal, and the signal element is located on the side of the first positioning element facing the first terminal. When the first connection structure and the second connection structure are plugged into each other, the conductive element and the signal element abut against each other to conduct electricity and form a signal circuit.

9. A connector according to claim 4, characterized in that, The first terminal is crimped with a cable, and the first connection structure further includes a limiting member. The limiting member abuts against the inner circumferential surface of the first housing and is located on the side of the first fixing member away from the first terminal. The cable passes through the limiting member and is interference-fitted with the limiting member.

10. A connector according to claim 9, characterized in that, The first housing has a cable outlet hole at the end opposite to the first terminal. The cable extends from the first terminal toward the limiting member and passes through the cable outlet hole. The cable abuts against the wall of the cable outlet hole. The limiting member and the cable outlet hole are spaced apart to jointly restrict the movement of the cable relative to the first housing.

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