Socket connector, plug connector and plug-in assembly

Abstract

The application discloses a socket connector, a plug connector and a plug-in assembly. The socket connector comprises a shell, a contact assembly and a tail cap. The shell is internally provided with a mounting cavity, and has a first end and a second end. The contact assembly is fixed in the mounting cavity. The tail cap is arranged at the second end of the shell, and comprises a bottom wall, a side wall formed by extending the edge of the bottom wall in an axial direction, a guide portion formed by extending the bottom wall in the axial direction, a sealing cavity surrounded by the outer wall of the guide portion, the side wall and the bottom wall, a wire hole arranged on the bottom wall and the guide portion, and a sealing ring arranged on the inner wall and the outer wall of the end of the guide portion close to the bottom wall. The guide portion of the tail cap is inserted into the mounting cavity, and the second end of the shell is inserted into the sealing cavity. The application effectively improves the waterproof and dustproof performance of the end of the connector, and ensures the stable and reliable signal or power transmission.

Description

Technical Field

[0001] This invention relates to the field of electrical connectors, and particularly to a socket connector, a plug connector, and a mating assembly. Background Technology

[0002] In the field of connector technology, the connector tail typically requires the insertion of a cable, and the gap between the cable and the housing makes this area an easy channel for moisture and dust to enter the connector. In existing technologies, a sealing ring is usually only installed around the cable to prevent this gap. This short sealing path makes the seal prone to failure due to aging or vibration over long-term use, leading to corrosion of internal terminals, decreased insulation, and affecting the connector's lifespan and safety performance. Therefore, improving the sealing reliability of the connector tail is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0003] The main objective of this invention is to provide a socket connector, comprising a housing, a contact assembly, and a tail cap; the housing has an axially oriented mounting cavity, and the housing has a first end and a second end disposed opposite to each other; the contact assembly is fixed within the mounting cavity; the tail cap is disposed at the second end of the housing, the tail cap comprising a bottom wall, the edge of the bottom wall extending axially to form a side wall, the bottom wall further extending axially to form a guide portion, the outer wall of the guide portion, the side wall, and the bottom wall forming a sealing cavity, the bottom wall and the guide portion having axially oriented wire-passing holes, and the inner and outer walls of the guide portion near the bottom wall both having sealing rings; the guide portion of the tail cap is inserted into the mounting cavity, and the second end of the housing is inserted into the sealing cavity.

[0004] Optionally, in one embodiment of the present invention, the contact component includes a retaining ring and a terminal fixed within the retaining ring. The retaining ring includes a waterproof end and a fixed end arranged sequentially along the axis. A fixed cavity is provided through the retaining ring along the axis. A sealing layer is provided on the outer wall of the waterproof end. Sealing protrusions are provided at intervals on the sealing layer.

[0005] Optionally, in one embodiment of the present invention, the diameter of the waterproof end is smaller than the diameter of the fixed end, the inner wall of the mounting cavity is provided with a limiting protrusion, the end of the fixed end near the waterproof end abuts axially with the limiting protrusion, and the limiting protrusion abuts radially with the sealing layer.

[0006] Optionally, in one embodiment of the present invention, the contact assembly further includes an inner shielding shell and a rubber core, the inner shielding shell being at least partially disposed within the retaining ring, the inner shielding shell having a shielding cavity along the axial direction, the rubber core being fixed within the shielding cavity, and the terminal being fixed within the rubber core.

[0007] Optionally, in one embodiment of the present invention, the inner shielding shell has a contact portion, a fixing portion and an extension portion connected in sequence, the diameters of the contact portion, the fixing portion and the extension portion decreasing in the direction toward the second end, and the diameter of the fixing cavity decreasing in the direction toward the second end, so as to match the diameter of the inner shielding shell.

[0008] Optionally, in one embodiment of the present invention, the contact portion is provided with elastic sheets at intervals; and / or, the outer wall of the fixing portion is provided with protrusions.

[0009] Optionally, in one embodiment of the present invention, the core includes a plug-in portion and a receiving portion connected in sequence, the plug-in portion is provided with a through hole along the axial direction, and the terminal is inserted into the core.

[0010] Optionally, in one embodiment of the present invention, the terminal includes a socket, a transition end and a wiring terminal connected in sequence, wherein the socket is inserted into the plug-in portion.

[0011] Optionally, in one embodiment of the present invention, the socket connector further includes an outer shielding shell, the outer shielding shell being disposed within the guide portion and located at one end of the guide portion away from the tail cap, and the extension portion being at least partially coaxially sleeved within the outer shielding shell.

[0012] Optionally, in one embodiment of the present invention, the guide portion and the sealing ring are integrally formed by secondary overmolding injection molding.

[0013] The present invention also proposes a plug connector, including a housing, a guide assembly, and a tail sleeve; the housing has an inner cavity along the axial direction, and the housing has a plug end and a tail end disposed opposite to each other; the guide assembly is fixed in the inner cavity; the tail sleeve is disposed at the tail end of the housing, the tail sleeve includes a sealing wall, the edge of the sealing wall extends axially to form a surrounding wall, the sealing wall also extends axially to form a guide portion, the outer wall of the guide portion, the surrounding wall, and the sealing wall form a sealing groove cavity, the sealing wall and the guide portion are provided with wire through holes along the axial direction, and the inner wall and outer wall of the guide portion near the sealing wall are provided with sealing rings; the guide portion of the tail sleeve is inserted into the inner cavity, and the tail end of the housing is inserted into the sealing groove cavity.

[0014] Optionally, in one embodiment of the present invention, the guide assembly includes a retainer and a guide member fixed within the retainer. The retainer has a retaining cavity extending axially through it, and a stop boss is provided on the inner wall of the inner cavity. One end of the retainer adjacent to the insertion end abuts against the stop boss axially.

[0015] Optionally, in one embodiment of the present invention, the conductive assembly further includes an inner shielding sleeve and an insulator. The inner shielding sleeve is at least partially disposed within the retainer. An axial shielding cavity is provided inside the inner shielding sleeve. The insulator is fixed within the shielding cavity, and the conductive member is fixed within the insulator.

[0016] Optionally, in one embodiment of the present invention, the inner shielding sleeve has a docking portion, a positioning portion, and an extension portion connected in sequence, the diameters of the docking portion, the positioning portion, and the extension portion decreasing in the direction toward the tail end, and the diameter of the retaining cavity decreasing in the direction toward the tail end, so as to match the diameter of the inner shielding sleeve.

[0017] Optionally, in one embodiment of the present invention, the insulator is provided with a through hole along the axial direction, and the conductor is inserted into the through hole.

[0018] Optionally, in one embodiment of the present invention, the plug connector further includes an outer shielding sleeve, the outer shielding sleeve being disposed at the end of the guide portion away from the tail sleeve, and the extension portion being at least partially inserted into the outer shielding sleeve.

[0019] Optionally, in one embodiment of the present invention, the guide portion and the sealing ring are integrally formed by secondary overmolding injection molding.

[0020] The present invention also proposes a plug assembly, including the aforementioned socket connector and the aforementioned plug connector, wherein a first end of the socket connector is plugged into the plug end of the plug connector.

[0021] This invention achieves the transmission of electrical energy or signals by setting a housing with a mounting cavity and fixing the contact assembly inside the mounting cavity. A tail cap is provided at the second end of the housing, comprising a bottom wall, side walls, and a guide portion. The outer wall of the guide portion, together with the side walls and bottom wall, forms a sealed cavity, creating a space to accommodate the second end of the housing. By inserting the guide portion into the mounting cavity of the housing and simultaneously inserting the second end of the housing into the sealed cavity of the tail cap, a nested insertion structure is formed, extending the sealing path. Sealing rings are provided on both the inner and outer walls of the guide portion near the bottom wall, creating radial seals between the guide portion, the sealing rings, the second end of the housing, and the side walls, as well as between the guide portion, the sealing rings, and the cable. This improves the sealing effect, effectively preventing moisture and dust from entering the connector axially, thus enhancing the connector's protection level and service life in harsh environments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is an exploded view of an embodiment of the socket connector of the present invention; Figure 2 This is a cross-sectional view of an embodiment of the socket connector of the present invention; Figure 3 This is an exploded view of an embodiment of the plug connector of the present invention; Figure 4 This is a cross-sectional view of an embodiment of the plug connector of the present invention; Figure 5 This is a cross-sectional view of an embodiment of the plug-in component of the present invention.

[0024] Explanation of icon numbers: 100. Socket connector; 10. Housing; 10a. Mounting cavity; 10b. First end; 10c. Second end; 101. Limiting protrusion; 20. Contact assembly; 21. Retaining ring; 21a. Fixing cavity; 211. Waterproof end; 2111. Sealing layer; 2112. Sealing protrusion; 212. Fixing end; 22. Terminal; 221. Socket; 222. Transition end; 223. Wiring terminal; 23. Inner shielding shell; 23a. Shielding cavity; 231. Contact part; 2311. Elastic sheet; 232. Fixing part; 2321. Protrusion; 233. Extension part; 24. Core; 24a. Through hole; 241. Plug-in part; 242. Receiving part; 243. Limiting block; 30. Tail cap; 30a. Sealing cavity; 30b. Wire hole; 31. Bottom wall; 32. Side wall; 33. Guide part; 34. Sealing ring; 40. Outer shielding shell; 500. Plug connector; 50. Outer shell; 50a. Inner cavity; 50b. Plug end; 50c. Tail end; 51. Stop boss; 60. Conductor assembly; 61. Cage; 61a. Cage cavity; 62. Conductor; 63. Inner shielding sleeve; 63a. Shielding inner cavity; 631. Butt joint; 632. Positioning part; 633. Extension part; 64. Insulator; 64a. Through hole; 70. Tail sleeve; 70a. Sealing groove; 70b. Wire hole; 71. Sealing wall; 72. Enclosure wall; 73. Guide part; 74. Sealing ring; 80. Outer shielding sleeve; 900. Plug-in assembly.

[0025] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0029] In the field of connector technology, the connector tail typically requires the insertion of a cable, and the gap between the cable and the housing makes this area an easy channel for moisture and dust to enter the connector. In existing technologies, a sealing ring is usually only installed around the cable to prevent this gap. This short sealing path makes the seal prone to failure due to aging or vibration over long-term use, leading to corrosion of internal terminals, decreased insulation, and affecting the connector's lifespan and safety performance. Therefore, improving the sealing reliability of the connector tail is a pressing technical problem that needs to be solved in this field.

[0030] In view of this, the present invention achieves the function of transmitting electrical energy or signals by setting a housing with a mounting cavity and fixing the contact component in the mounting cavity; by setting a tail cap at the second end of the housing, and making the tail cap include a bottom wall, a side wall and a guide portion, the outer wall of the guide portion and the side wall and bottom wall form a sealed cavity, forming a space to accommodate the second end of the housing; by inserting the guide portion into the mounting cavity of the housing and simultaneously inserting the second end of the housing into the sealed cavity of the tail cap, a nested insertion structure is formed, which extends the sealing path; by setting sealing rings on both the inner and outer walls of the guide portion near the bottom wall, a radial seal is formed between the guide portion, the sealing ring, the second end of the housing and the side wall, and between the guide portion, the sealing ring and the cable, which improves the sealing effect, effectively prevents moisture and dust from entering the connector along the axial direction, and improves the protection level and service life of the connector in harsh environments.

[0031] To better understand the above technical solution, a detailed explanation of the technical solution is provided below with reference to the accompanying drawings.

[0032] like Figure 1-2 As shown in Figure 5, the present invention proposes a socket connector 100, including a housing 10, a contact assembly 20, and a tail cap 30. The housing 10 has an axially arranged mounting cavity 10a, and the housing 10 has a first end 10b and a second end 10c disposed opposite to each other. The contact assembly 20 is fixed within the mounting cavity 10a. The tail cap 30 is disposed at the second end 10c of the housing 10. The tail cap 30 includes a bottom wall 31, the edge of which extends axially to form a side wall 32. The bottom wall 31 also extends axially to form a guide portion 33. The outer wall of the guide portion 33, the side wall 32, and the bottom wall 31 form a sealing cavity 30a. A wire-passing hole 30b is provided axially on the bottom wall 31 and the guide portion 33. Sealing rings 34 are provided on both the inner and outer walls of the guide portion 33 near the bottom wall 31. The guide portion 33 of the tail cap 30 is inserted into the mounting cavity 10a, and the second end 10c of the housing 10 is inserted into the sealing cavity 30a.

[0033] Understandably, the housing 10, as the main structure of the socket connector 100, can be injection molded from high-strength insulating materials such as polycarbonate or polyamide. The mounting cavity 10a extends axially through the interior of the housing 10 to accommodate the contact assembly 20. The first end 10b is the insertion end 50b, used for insertion with the mating plug connector 500; the second end 10c is the tail end 50c, used for wire passage and mounting the tail cap 30. The tail cap 30 is also made of insulating material, with a disc-shaped bottom wall 31. The edge of the bottom wall 31 extends forward to form a side wall 32, and the bottom wall 31 also extends axially to form a guide portion 33. An annular sealing cavity 30a is formed between the guide portion 33 and the side wall 32. A wire passage hole 30b is opened at the center of the bottom wall 31 and extends through the guide portion 33 for the cable to pass through. The sealing ring 34 can be fitted into the inner and outer wall grooves of the guide portion 33 near the bottom wall 31. During assembly, the guide portion 33 of the tail cap 30 is inserted into the mounting cavity 10a from the second end 10c of the housing 10, while the second end 10c of the housing 10 is also inserted into the sealing cavity 30a, forming a radial seal between the guide portion 33, the sealing ring 34, the second end 10c of the housing 10, and the side wall 32. Conversely, the cable is passed through the cable hole 30b, also forming a radial seal between the guide portion 33, the sealing ring 34, and the cable. This nested structure changes the sealing path from a single axial direction to multiple radial directions, significantly improving sealing reliability. Preferably, the guide portion 33 and the sealing ring 34 are integrally molded using a secondary overmolding process. Understandably, through this secondary overmolding process, the sealing ring 34 is directly injection molded onto the inner and outer walls of the guide portion 33 near the bottom wall 31, forming an integral component. This prevents the sealing ring 34 from falling off or shifting during assembly, improving assembly efficiency and long-term sealing reliability.

[0034] In an embodiment of the present invention, the contact component 20 includes a retaining ring 21 and a terminal 22 fixed inside the retaining ring 21. The retaining ring 21 includes a waterproof end 211 and a fixed end 212 arranged sequentially in the axial direction. A fixed cavity 21a is provided through the retaining ring 21 in the axial direction. A sealing layer 2111 is provided on the outer wall of the waterproof end 211. Sealing protrusions 2112 are provided at intervals on the sealing layer 2111.

[0035] Understandably, the retaining ring 21, serving as the carrier for mounting the terminal 22, can be made of metal or insulating material. The waterproof end 211 is located near the first end 10b of the housing 10, and the fixed end 212 is located near the second end 10c of the housing 10. The fixed cavity 21a is used to accommodate the terminal 22. The sealing layer 2111 can be a rubber layer molded over the outer wall of the waterproof end 211, and the sealing protrusion 2112 is an annular rib used to form multiple seals with the inner wall of the mounting cavity 10a and / or the mating plug connector 500 to prevent moisture from entering from the mating end 50b.

[0036] In an embodiment of the present invention, the diameter of the waterproof end 211 is smaller than the diameter of the fixed end 212, the inner wall of the mounting cavity 10a is provided with a limiting protrusion 101, the end of the fixed end 212 near the waterproof end 211 is axially abutted against the limiting protrusion 101, and the limiting protrusion 101 abuts against the sealing layer 2111 radially.

[0037] Understandably, the smaller diameter of the waterproof end 211 facilitates insertion into the front end of the mounting cavity 10a, while the larger diameter of the fixed end 212 forms a step. The limiting protrusion 101 on the inner wall of the mounting cavity 10a can be an annular boss, and the stepped surface of the fixed end 212 abuts against the limiting protrusion 101 to achieve axial positioning. At the same time, the inner wall of the limiting protrusion 101 is interference-fitted with the sealing layer 2111 to form a radial seal.

[0038] In an embodiment of the present invention, the contact assembly 20 further includes an inner shielding shell 23 and a core 24. The inner shielding shell 23 is at least partially disposed within the retaining ring 21. A shielding cavity 23a is provided axially within the inner shielding shell 23. The core 24 is fixed within the shielding cavity 23a, and the terminal 22 is fixed within the core 24.

[0039] Understandably, the inner shielding shell 23 is made of metal and is used to shield against electromagnetic interference. The shielding cavity 23a is used to accommodate the adhesive core 24. The adhesive core 24 can be made of insulating material to position and fix the terminal 22, preventing the terminal 22 from moving.

[0040] In an embodiment of the present invention, the inner shielding shell 23 has a contact portion 231, a fixing portion 232 and an extension portion 233 connected in sequence. The diameters of the contact portion 231, the fixing portion 232 and the extension portion 233 decrease in the direction toward the second end 10c. The diameter of the fixing cavity 21a decreases in the direction toward the second end 10c to match the diameter of the inner shielding shell 23.

[0041] Understandably, the contact portion 231 has the largest diameter and is used to contact the mating plug connector 500; the fixing portion 232 is used to fix it to the retaining ring 21; and the extension portion 233 has the smallest diameter. The stepped hole of the fixing cavity 21a matches the stepped outer diameter of the inner shielding shell 23 to achieve radial positioning.

[0042] In an embodiment of the present invention, the contact portion 231 is provided with elastic sheets 2311 spaced apart; and / or, the outer wall of the fixing portion 232 is provided with protrusions 2321.

[0043] Understandably, the elastic sheet 2311 is used to form an elastic contact with the corresponding structure of the mating plug connector 500 to ensure reliable shielding performance. The protrusion 2321 is used to press-fit with the inner wall of the retaining ring 21 or to form a snap-fit ​​structure to fix the inner shielding shell 23.

[0044] In an embodiment of the present invention, the core 24 includes a plug-in portion 241 and a receiving portion 242 connected in sequence. The plug-in portion 241 is provided with a through hole 24a along the axial direction, and the terminal 22 is inserted into the core 24.

[0045] Understandably, when the socket connector 100 is inserted into the mating plug connector 500, the guide 62 of the plug connector 500 passes through the through hole 24a and is inserted into the terminal 22, thereby realizing the power transmission between the plug connector 500 and the socket connector 100. The receiving portion 242 is used to receive the end of the terminal 22 away from the through hole 24a. Preferably, the core 24 further includes a limiting block 243, which is disposed between the insertion portion 241 and the receiving portion 242. The outer wall of the limiting block 243 abuts against the inner wall of the contact portion 231, and the outer wall of the receiving portion 242 abuts against the inner wall of the fixing portion 232.

[0046] In an embodiment of the present invention, the terminal 22 includes a socket 221, a transition end 222 and a wiring end 223 connected in sequence, with the socket 221 inserted into the plug-in portion 241.

[0047] Understandably, the socket 221 is a hollow cylinder, and may contain a crown spring for insertion into the guide piece 62 of the plug connector 500. The transition end 222 is the connecting section, and the terminal 223 is used for fixed connection with the cable.

[0048] In an embodiment of the present invention, the socket connector 100 further includes an outer shielding shell 40, which is disposed within the guide portion 33 and located at one end of the guide portion 33 away from the tail cap 30, and the extension portion 233 is at least partially coaxially sleeved within the outer shielding shell 40.

[0049] Understandably, the outer shielding shell 40 is a cylindrical structure made of a conductive metallic material, such as copper alloy or nickel-plated steel, used to provide electromagnetic shielding and a grounding path. The outer shielding shell 40 is fixedly installed inside the guide portion 33 of the tail cap 30, located at the end of the guide portion 33 away from the bottom wall 31 of the tail cap 30, i.e., in the direction of the guide portion 33 near the first end 10b of the housing 10. The extension portion 233 of the inner shielding shell 23 extends from front to back into the guide portion 33 and is at least partially coaxially disposed inside the outer shielding shell 40. There may be a gap between the extension portion 233 and the outer shielding shell 40, or they may be in contact. This sleeve structure achieves continuous axial extension of the shielding layer, effectively improving the electromagnetic interference resistance of the entire socket connector 100, while fully utilizing the internal space of the guide portion 33, resulting in a compact structure and easy assembly.

[0050] like Figure 3-5As shown, the present invention also proposes a plug connector 500, including a housing 50, an inner cavity 50a provided axially inside the housing 50, and the housing 50 having a plug end 50b and a tail end 50c disposed opposite to each other; a guide assembly 60 fixed in the inner cavity 50a; and a tail sleeve 70 disposed at the tail end 50c of the housing 50. The tail sleeve 70 includes a sealing wall 71, the edge of the sealing wall 71 extending axially to form a surrounding wall 72, and the sealing wall 71 also extending axially to form a guide portion 73. The outer wall of the guide portion 73, the surrounding wall 72, and the sealing wall 71 form a sealing groove cavity 70a. The sealing wall 71 and the guide portion 73 are provided with a wire through hole 70b axially. The inner wall and outer wall of the guide portion 73 near the sealing wall 71 are both provided with sealing rings 74. The guide portion 73 of the tail sleeve 70 is inserted into the inner cavity 50a, and the tail end 50c of the housing 50 is inserted into the sealing groove cavity 70a.

[0051] Understandably, the plug connector 500 has a similar structure to the socket connector 100, with the outer shell 50 equivalent to the housing 10 and the tail sleeve 70 equivalent to the tail cap 30. The guide part 73 is inserted into the inner cavity 50a, and the tail end 50c of the outer shell 50 is inserted into the sealing groove cavity 70a. The inner and outer sealing rings 74 form a double seal, achieving the same tail sealing effect.

[0052] In an embodiment of the present invention, the guide assembly 60 includes a retainer 61 and a guide member 62 fixed in the retainer 61. A retaining cavity 61a is provided axially inside the retainer 61. A stop boss 51 is provided on the inner wall of the inner cavity 50a. One end of the retainer 61 near the insertion end 50b abuts axially with the stop boss 51.

[0053] Understandably, the retainer 61 is used to fix the guide 62, and the stop boss 51 axially limits the retainer 61.

[0054] In an embodiment of the present invention, the conductive assembly 60 further includes an inner shielding sleeve 63 and an insulator 64. The inner shielding sleeve 63 is at least partially disposed within the retainer 61. An axial shielding cavity 63a is provided inside the inner shielding sleeve 63. The insulator 64 is fixed within the shielding cavity 63a. The conductive member 62 is fixed within the insulator 64.

[0055] Understandably, the inner shielding sleeve 63 and the insulator 64 function similarly to the inner shielding shell 23 and the core 24 in the socket connector 100, for shielding and fixing the conductor 62.

[0056] In an embodiment of the present invention, the inner shielding sleeve 63 has a docking portion 631, a positioning portion 632 and an extension portion 633 connected in sequence. The diameters of the docking portion 631, the positioning portion 632 and the extension portion 633 decrease in the direction toward the tail end 50c. The diameter of the retaining cavity 61a decreases in the direction toward the tail end 50c to match the diameter of the inner shielding sleeve 63.

[0057] Understandably, by designing the outer diameter of the inner shielding sleeve 63 as a stepped structure, and simultaneously providing a matching stepped retaining cavity 61a at a corresponding position inside the retainer 61, when the inner shielding sleeve 63 is installed into the retainer 61 in the correct orientation, the stepped surface inside the retaining cavity 61a will naturally fit against the stepped surface on the outer diameter of the inner shielding sleeve 63, thereby reliably limiting the inner shielding sleeve 63 in the axial direction. This structure eliminates the need for additional retaining rings or fasteners, simplifying the assembly process and effectively preventing the inner shielding sleeve 63 from shifting under axial force, ensuring the stability of the overall electromagnetic interference resistance performance of the shielding layer.

[0058] In an embodiment of the present invention, the insulator 64 is provided with a through hole 64a along the axial direction, and the conductor 62 is inserted into the through hole 64a.

[0059] Understandably, the through hole 64a is used to fix the guide 62, which is in the form of a pin and mates with the socket 221 of the terminal 22 of the socket connector 100.

[0060] In an embodiment of the present invention, the plug connector 500 further includes an outer shielding sleeve 80, which is disposed inside the guide portion 73 and located at one end of the guide portion 73 away from the tail sleeve 70, and the extension portion 633 is at least partially coaxially sleeved inside the outer shielding sleeve 80.

[0061] Understandably, the outer shielding sleeve 80 is fixedly installed inside the guide portion 73 of the tail sleeve 70, and is located at the end of the guide portion 73 away from the sealing wall 71 of the tail sleeve 70, that is, in the direction of the guide portion 73 near the insertion end 50b of the outer shell 50. The extension portion 633 of the inner shielding sleeve 63 extends into the guide portion 73 from front to back, and is at least partially coaxially disposed inside the outer shielding sleeve 80. There may be a gap between the extension portion 633 and the outer shielding sleeve 80, or they may be in contact with each other. This sleeve structure realizes the continuous axial extension of the shielding layer, effectively improving the electromagnetic interference resistance of the entire plug connector 500, while making full use of the internal space of the guide portion 33, resulting in a compact structure and easy assembly.

[0062] In an embodiment of the present invention, the guide part 73 and the sealing ring 74 are integrally formed by secondary overmolding injection molding.

[0063] Understandably, similar to the socket connector 100, the sealing ring 74 is directly injection molded and bonded to the inner and outer walls of the guide part 73 near the sealing wall 71 through secondary overmolding, forming an integrated component, which improves assembly efficiency and sealing reliability.

[0064] like Figure 5As shown, in an embodiment of the present invention, a plug-in assembly 900 is provided, including any of the above-mentioned socket connectors 100 and plug connectors 500, wherein the first end 10b of the socket connector 100 is plugged into the plug end 50b of the plug connector 500.

[0065] Understandably, after the socket connector 100 and the plug connector 500 are mated, they form a complete connector assembly for use in scenarios such as electric vehicle charging. The first end 10b of the socket connector 100 and the mating end 50b of the plug connector 500 are mated together to achieve electrical and signal connections.

[0066] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A socket connector (100), characterized in that, include: The housing (10) has an axially arranged mounting cavity (10a) inside, and the housing (10) has a first end (10b) and a second end (10c) disposed opposite to each other. The contact component (20) is fixed inside the mounting cavity (10a); A tail cap (30) is provided at the second end (10c) of the housing (10). The tail cap (30) includes a bottom wall (31). The edge of the bottom wall (31) extends axially to form a side wall (32). The bottom wall (31) also extends axially to form a guide portion (33). The outer wall of the guide portion (33) and the side wall (32) and the bottom wall (31) form a sealing cavity (30a). The bottom wall (31) and the guide portion (33) are provided with wire holes (30b) along the axial direction. The inner wall and outer wall of the guide portion (33) near the bottom wall (31) are provided with sealing rings (34). The guide portion (33) of the tail cap (30) is inserted into the mounting cavity (10a), and the second end (10c) of the housing (10) is inserted into the sealing cavity (30a).

2. The socket connector (100) as described in claim 1, characterized in that, The contact assembly (20) includes a retaining ring (21) and a terminal (22) fixed inside the retaining ring (21). The retaining ring (21) includes a waterproof end (211) and a fixed end (212) arranged axially in sequence. A fixed cavity (21a) is provided through the retaining ring (21) along the axial direction. A sealing layer (2111) is provided on the outer wall of the waterproof end (211). Sealing protrusions (2112) are provided at intervals on the sealing layer (2111).

3. The socket connector (100) as described in claim 2, characterized in that, The diameter of the waterproof end (211) is smaller than the diameter of the fixed end (212). The inner wall of the mounting cavity (10a) is provided with a limiting protrusion (101). The end of the fixed end (212) near the waterproof end (211) abuts axially with the limiting protrusion (101). The limiting protrusion (101) abuts radially with the sealing layer (2111).

4. The socket connector (100) as described in claim 3, characterized in that, The contact assembly (20) further includes an inner shielding shell (23) and a core (24). The inner shielding shell (23) is at least partially disposed within the retaining ring (21). A shielding cavity (23a) is provided axially within the inner shielding shell (23). The core (24) is fixed within the shielding cavity (23a). The terminal (22) is fixed within the core (24).

5. The socket connector (100) as described in claim 4, characterized in that, The inner shielding shell (23) has a contact portion (231), a fixing portion (232) and an extension portion (233) connected in sequence. The diameters of the contact portion (231), the fixing portion (232) and the extension portion (233) decrease in the direction toward the second end (10c). The diameter of the fixing cavity (21a) decreases in the direction toward the second end (10c) to match the diameter of the inner shielding shell (23).

6. The socket connector (100) as described in claim 5, characterized in that, The contact portion (231) is provided with elastic pieces (2311) spaced apart; and / or, the outer wall of the fixing portion (232) is provided with protrusions (2321).

7. The socket connector (100) as claimed in claim 6, characterized in that, The core (24) includes a plug-in portion (241) and a receiving portion (242) connected in sequence. The plug-in portion (241) has a through hole (24a) along the axial direction, and the terminal (22) is inserted into the core (24).

8. The socket connector (100) as claimed in claim 7, characterized in that, The terminal (22) includes a socket (221), a transition end (222) and a wiring end (223) connected in sequence, and the socket (221) is inserted into the plug part (241).

9. The socket connector (100) as claimed in claim 8, characterized in that, The socket connector (100) further includes an outer shielding shell (40), which is disposed inside the guide portion (33) and located at one end of the guide portion (33) away from the tail cap (30), and the extension portion (233) is at least partially coaxially sleeved inside the outer shielding shell (40).

10. The socket connector (100) as claimed in claim 1, characterized in that, The guide part (33) and the sealing ring (34) are integrally formed by secondary overmolding injection molding.

11. A plug connector (500), characterized in that, include: The housing (50) has an axial cavity (50a) inside, and the housing (50) has a plug-in end (50b) and a tail end (50c) disposed opposite to each other. The guide assembly (60) is fixed inside the inner cavity (50a); Tail sleeve (70) is provided at the tail end (50c) of the outer shell (50). The tail sleeve (70) includes a sealing wall (71). The edge of the sealing wall (71) extends axially to form a surrounding wall (72). The sealing wall (71) also extends axially to form a guide part (73). The outer wall of the guide part (73) forms a sealing groove cavity (70a) with the surrounding wall (72) and the sealing wall (71). The sealing wall (71) and the guide part (73) are provided with a wire hole (70b) along the axial direction. The inner wall and outer wall of the guide part (73) near the end of the sealing wall (71) are provided with sealing rings (74). The guide portion (73) of the tail sleeve (70) is inserted into the inner cavity (50a), and the tail end (50c) of the outer shell (50) is inserted into the sealing groove cavity (70a).

12. The plug connector (500) as claimed in claim 11, characterized in that, The guide assembly (60) includes a retainer (61) and a guide member (62) fixed in the retainer (61). The retainer (61) has a retaining cavity (61a) extending through it along the axial direction. The inner wall of the inner cavity (50a) is provided with a stop boss (51). The end of the retainer (61) near the plug end (50b) abuts against the stop boss (51) in the axial direction.

13. The plug connector (500) as claimed in claim 12, characterized in that, The conductive assembly (60) further includes an inner shielding sleeve (63) and an insulator (64). The inner shielding sleeve (63) is at least partially disposed within the retainer (61). The inner shielding sleeve (63) has an axially arranged shielding cavity (63a). The insulator (64) is fixed within the shielding cavity (63a). The conductive member (62) is fixed within the insulator (64).

14. The plug connector (500) as claimed in claim 13, characterized in that, The inner shielding sleeve (63) has a docking part (631), a positioning part (632) and an extension part (633) connected in sequence. The diameters of the docking part (631), the positioning part (632) and the extension part (633) decrease in the direction toward the tail end (50c). The diameter of the retaining cavity (61a) decreases in the direction toward the tail end (50c) to match the diameter of the inner shielding sleeve (63).

15. The plug connector (500) as claimed in claim 14, characterized in that, The insulator (64) has a through hole (64a) along the axial direction, and the conductor (62) is inserted into the through hole (64a).

16. The plug connector (500) as claimed in claim 15, characterized in that, The plug connector (500) also includes an outer shield (80), which is located at the end of the guide portion (73) away from the tail sleeve (70), and the extension portion (633) is at least partially inserted into the outer shield (80).

17. The plug connector (500) as claimed in claim 11, characterized in that, The guide part (73) and the sealing ring (74) are integrally formed by secondary overmolding injection molding.

18. A plug-in assembly (900), characterized in that, Includes a socket connector (100) as described in any one of claims 1-10 and a plug connector (500) as described in any one of claims 11-17, wherein a first end (10b) of the socket connector (100) is plugged into a mating end (50b) of the plug connector (500).

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