Connector males and connector assemblies

By designing an insulating body and conductive structure on the male connector, and utilizing the elastic deformation of the annular flange to achieve sealing against dust and water, the problem of wear and insufficient sealing after repeated mating and unmating of traditional connector assemblies is solved, thereby improving connection reliability and service life.

CN224595883UActive Publication Date: 2026-08-04KUNSHAN AMPHENOL ZHENGRI ELECTRONICS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KUNSHAN AMPHENOL ZHENGRI ELECTRONICS CO LTD
Filing Date
2025-06-19
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Traditional connector assemblies suffer from wear and tear after repeated mating and unmating, affecting connection reliability, and also have issues with insufficient sealing and waterproofing.

Method used

Design a male connector head that adopts an insulating body and a conductive body structure. By setting a first outer periphery and a second outer periphery in the insertion part, and setting an annular flange on the second outer periphery, the annular flange can bend elastically during insertion to achieve a sealing, dustproof and waterproof effect. At the same time, a positioning structure is used to lock it in the positioning groove to ensure a stable connection.

Benefits of technology

It improves the connection reliability of the connector, enhances the sealing, dustproof and waterproof performance, prevents dust and moisture intrusion, and extends the service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a male connector and a connector assembly. The male connector is used to insert into a female connector. The female connector has a socket and a positioning groove. The male connector includes an insulating body and a plurality of conductive bodies. The insulating body includes an outer shell and a plug-in portion. The plug-in portion has a first outer periphery, a second outer periphery, a positioning structure, and an annular flange. The first outer periphery is located between the outer shell and the second outer periphery and its outer diameter is larger than that of the second outer periphery. The positioning structure is disposed on the first outer periphery, and the annular flange is disposed on the second outer periphery and protrudes from the first outer periphery. Each conductive body is inserted into the plug-in portion. When the male connector is inserted into the female connector, at least a portion of the plug-in portion and each conductive body is accommodated in the socket. The positioning structure is secured in the positioning groove. The annular flange is elastically bent toward the outer shell and elastically abuts against the inner wall of the socket to improve the waterproof effect.
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Description

Technical Field

[0001] This application relates to electrical connectors, and in particular to male connectors and connector assemblies. Background Technology

[0002] Connector assemblies are widely used in various industrial, electronic, and technological fields. Their types and forms are diverse, allowing consumers to choose different types of connector assemblies based on their specific needs. A connector assembly mainly consists of a male connector head and a female connector head that can be plugged into each other. When plugged in, they create a circuit that allows current or signals to flow and be transmitted. To prevent the male and female connector heads from coming loose after plugging in and affecting the electrical connection, most are designed with snap-fit ​​or locking structures to ensure reliable connection and facilitate quick disassembly and installation.

[0003] However, traditional connector assemblies, which are fastened using a snap-fit ​​method, often experience wear after repeated mating and disassembly, affecting the reliability of the connection between the male and female connectors and consequently the electrical connection. Furthermore, because traditional connector assemblies use a snap-fit ​​or locking structure, gaps remain between the male and female connectors, resulting in insufficient sealing and waterproofing. This allows dust or moisture to easily penetrate, affecting the lifespan and reliability of the connector assembly.

[0004] In view of this, the inventor of this utility model has devoted himself to research and applied theoretical knowledge to address the shortcomings of the prior art, and has made every effort to solve the above-mentioned problems, which is the goal of the inventor's improvement. Utility Model Content

[0005] The main purpose of this invention is to allow the male connector to be inserted and fixed to the female connector while also achieving good sealing, dustproof, and waterproof effects.

[0006] To achieve the above objectives, this utility model provides a male connector for insertion and fixation with a female connector. The female connector has a socket and a positioning groove. The positioning groove is located on an inner wall of the socket. The male connector includes an insulating body and a plurality of conductive bodies. The insulating body includes an outer shell and a plug-in portion disposed at one end of the outer shell. The plug-in portion has a first outer periphery, a second outer periphery, a positioning structure, and an annular flange. The first outer periphery is located between the outer shell and the second outer periphery, and the outer diameter of the first outer periphery is larger than the outer diameter of the second outer periphery. The positioning structure is disposed on the first outer periphery, and the annular flange is disposed on the second outer periphery and protrudes from the first outer periphery. At least a portion of each conductive body is disposed within the plug-in portion and surrounded by the second outer periphery. When the male connector is inserted into the female connector, at least a portion of the plug-in portion and at least a portion of each conductive body are accommodated within the socket. The positioning structure is secured within the positioning groove. The annular flange is elastically bent toward the outer shell and elastically abuts against the inner wall of the socket.

[0007] In one embodiment of the present invention, the annular flange gradually narrows and extends from the second outer periphery toward the direction away from each conductor.

[0008] In one embodiment of this utility model, the positioning groove is an annular groove, and the positioning structure is an annular protrusion.

[0009] In one embodiment of this utility model, the annular flange also protrudes from the positioning structure.

[0010] In one embodiment of the present invention, the plug-in portion further includes a stop ring, with a first outer periphery connected between the stop ring and a second outer periphery. When the male connector is plugged into the female connector, the stop ring abuts against the female connector.

[0011] To achieve the above objectives, this utility model also provides a connector assembly, including a male connector and a female connector. The female connector has a socket and a positioning groove, the positioning groove being located on an inner wall of the socket. The male connector has a plug-in portion, the plug-in portion having a first outer periphery, a second outer periphery, a positioning structure, and an annular flange. The first outer periphery is located inside the second outer periphery, and the outer diameter of the first outer periphery is larger than the outer diameter of the second outer periphery. The positioning structure is disposed on the first outer periphery, and the annular flange is disposed on the second outer periphery and protrudes beyond the first outer periphery. When the male connector is plugged into the female connector, at least a portion of the plug-in portion is accommodated in the socket, the positioning structure is secured in the positioning groove, and the annular flange is elastically bent toward the second outer periphery and elastically abuts against the inner wall of the socket.

[0012] In one embodiment of the present invention, the annular flange extends outward from the second outer periphery in a gradually receding direction.

[0013] In one embodiment of this utility model, the positioning groove is an annular groove, and the positioning structure is an annular protrusion.

[0014] In one embodiment of this utility model, the annular flange also protrudes from the positioning structure.

[0015] In one embodiment of the present invention, the plug-in portion further includes a stop ring, with a first outer periphery connected between the stop ring and a second outer periphery. When the male connector is plugged into the female connector, the stop ring abuts against the female connector.

[0016] The male connector of this utility model and the male connector assembly have a first outer periphery and a second outer periphery formed on the insertion part. The first outer periphery is located between the outer shell and the second outer periphery. The outer diameter of the first outer periphery is larger than that of the second outer periphery. The positioning structure is disposed on the first outer periphery, and the annular flange is disposed on the second outer periphery and protrudes from the first outer periphery. This allows the male connector to have sufficient space to allow the annular flange to elastically deform and bend toward the outer shell when it is inserted into the female connector, thereby achieving a good sealing, dustproof and waterproof effect. At the same time, the positioning structure is locked in the positioning groove of the female connector to form a positioning and prevent the two from separating. Attached Figure Description

[0017] Figure 1 This is an exploded perspective view of the male connector and the female connector of this utility model.

[0018] Figure 2 This is a cross-sectional side view of the male connector and female connector of this utility model before they are inserted.

[0019] Figure 3 This is a cross-sectional side view of the connector male and female connectors of this utility model when they are inserted together.

[0020] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0021] Figure 5 This is a cross-sectional side view of the connector male and female heads after they are inserted into each other.

[0022] Figure 6 for Figure 5 A magnified view of a portion of the image.

[0023] Figure label:

[0024] 100: Connector male head; 110: Insulating body; 111: Housing; 112: Insertion part; 1121: First outer perimeter; 1122: Second outer perimeter; 1123: Positioning structure; 1124: Annular flange; 1125: Stop ring; 120: Conductor; 121: Conductive slot;

[0025] 200: Connector female head; 210: Socket; 220: Positioning groove; 230: Conductive pin. Detailed Implementation

[0026] The technical solution protected by this utility model will be described in detail below with reference to the accompanying drawings.

[0027] This utility model provides a male connector 100 for insertion and fixing with a female connector 200 to form an electrical connection. Please refer to... Figures 1 to 6 As shown, the female connector 200 has a socket 210 and a positioning groove 220. The positioning groove 220 is located on an inner wall of the socket 210. The male connector 100 of this utility model includes an insulating body 110 and a plurality of conductive bodies 120.

[0028] The insulating body 110 includes an outer shell 111 and a connector 112. The connector 112 is disposed at one end of the outer shell 111. In this embodiment, the connector 112 and the outer shell 111 are assembled as two pieces, but in other embodiments, the connector 112 and the outer shell 111 may be integrally formed components, depending on the design process or usage requirements. The connector 112 mainly has a first outer periphery 1121, a second outer periphery 1122, a positioning structure 1123, and an annular flange 1124. The first outer periphery 1121 is located between the outer shell 111 and the second outer periphery 1122, that is, the first outer periphery 1121 and the second outer periphery 1122 are arranged sequentially away from the outer shell 111. The outer diameter of the first outer periphery 1121 is larger than the outer diameter of the second outer periphery 1122. The positioning structure 1123 is disposed on the first outer periphery 1121, and the annular flange 1124 is disposed on the second outer periphery 1122 and protrudes from the first outer periphery 1121. In this embodiment, the entire insertion part 112 is integrally formed, that is, the positioning structure 1123 and the annular flange 1124 are integrally formed on the first outer periphery 1121 and the second outer periphery 1122, respectively, thereby effectively ensuring the structural strength of the positioning structure 1123 and the annular flange 1124 to prevent them from easily falling off the first outer periphery 1121 or the second outer periphery 1122. However, this utility model is not limited to this. In other embodiments, the positioning structure 1123 and the annular flange 1124 can also be fixed on the first outer periphery 1121 and the second outer periphery 1122 by means of bonding, welding or snap-fitting. Furthermore, the plug portion 112 in this embodiment is made of rubber, so the annular flange 1124 can undergo elastic deformation when subjected to force. However, this utility model is not limited to this, as long as the plug portion 112 is made of an elastic insulating material.

[0029] The conductor 120 is made of a material with good conductivity. At least a portion of each conductor 120 is disposed within the insertion portion 112, and each conductor 120 is surrounded by a second outer periphery 1122. In this embodiment, each conductor 120 is a hollow cylindrical shape with a conductive slot 121, and the socket 210 of the connector female head 200 is provided with a plurality of conductive pins 230 corresponding to the conductive slots 121 of each conductor 120. Each conductive pin 230 is inserted into the conductive slots 121 of each conductor 120 to form an electrical connection, but this utility model is not limited thereto. For example, each conductor 120 of the connector male head 100 of this utility model can also be in the form of a pin, so that the plurality of conductive slots 121 provided inside the socket 210 of the connector female head 200 can be inserted to form an electrical connection. In other words, this invention does not specifically limit the form of each conductor 120 of the male connector 100 to a pin or a slot, so those skilled in the art should be able to make corresponding adjustments according to different needs.

[0030] Therefore, when the male connector 100 is inserted into the female connector 200, at least a portion of the insertion part 112 and at least a portion of each conductor 120 are accommodated within the socket 210, thereby allowing the positioning structure 1123 to be engaged and fixed within the positioning groove 220. Simultaneously, the annular flange 1124 is elastically bent towards the outer shell 111 and elastically abuts against the inner wall of the socket 210. In this way, not only can the male connector 100 be inserted and fixed into the female connector 200, but the elastically deformable annular flange 1124 also provides excellent sealing, dustproof, and waterproof effects.

[0031] To further explain, the annular flange 1124 gradually tapers from the second outer periphery 1122 in a direction away from each conductor 120. In other words, the outer diameter of the annular flange 1124 is thicker at the root connecting to the second outer periphery 1122, while the outer diameter of the annular flange 1124 is thinner at the end away from the second outer periphery 1122. This not only strengthens the structural strength at the root of the annular flange 1124, but also reduces the structural strength at the end of the annular flange 1124, making it more conducive to elastic deformation. In this embodiment, the cross-sectional shape of the annular flange 1124 is generally an isosceles triangle, but this invention is not limited to this. For example, the cross-sectional shape of the annular flange 1124 can also be a right triangle, trapezoid, or other shapes, as long as the annular flange 1124 gradually tapers from the second outer periphery 1122 in a direction away from each conductor 120. In this embodiment, the annular flange 1124 also protrudes from the positioning structure 1123. That is, the end of the annular flange 1124 protrudes sequentially from the positioning structure 1123, the first outer periphery 1121, and the second outer periphery 1122. This ensures that the annular flange 1124 has sufficient length to generate elastic deformation and abut against the inner wall of the socket 210, thereby ensuring the dustproof sealing and waterproof performance between the male connector 100 and the female connector 200.

[0032] Furthermore, in this embodiment, the positioning groove 220 is an annular groove, and the positioning structure 1123 is an annular protrusion. In other words, the positioning groove 220 is a groove surrounding the inner wall of the connector female head 200, while the positioning structure 1123 is a protrusion surrounding the first outer periphery 1121, thereby ensuring that the positioning structure 1123 can be locked and fixed in the positioning groove 220 when the connector male head 100 of this invention is inserted into the connector female head 200 at any angle. However, this invention is not limited to this. For example, when the insertion part 112 is a rectangular body, the positioning structure 1123 can also be four protrusions and disposed on the four side planes of the insertion part 112, and the positioning groove 220 can be correspondingly four grooves. Therefore, the matching form of the positioning structure 1123 and the positioning groove 220 should be adjustable according to different needs. Furthermore, in this embodiment, the cross-sectional shape of the positioning groove 220 is a concave arc groove, while the cross-sectional shape of the positioning structure 1123 is an arc protrusion, which facilitates the positioning structure 1123 to be inserted into the positioning groove 220, but this utility model is not limited thereto.

[0033] Furthermore, the insertion portion 112 also has a stop ring 1125. A first outer periphery 1121 is connected between the stop ring 1125 and a second outer periphery 1122, that is, the stop ring 1125 is located between the outer shell 111 and the first outer periphery 1121. Therefore, when the male connector 100 is inserted into the female connector 200, the stop ring 1125 abuts against the female connector 200 to prevent the male connector 100 from continuing to be inserted, thereby achieving a stopping and limiting effect.

[0034] Please see Figures 1 to 6 As shown, this utility model also provides a connector assembly, which includes a male connector 100 as described above and a female connector 200 as described above. The male connector 100 can be inserted and fixed with the female connector 200 to form an electrical connection.

[0035] The female connector 200 has a socket 210 as described above and a positioning groove 220 as described above, with the positioning groove 220 located on the inner wall of the socket 210 as described above. The male connector 100 has a insertion portion 112 as described above, and the insertion portion 112 has a first outer periphery 1121 as described above, a second outer periphery 1122 as described above, a positioning structure 1123 as described above, and an annular flange 1124 as described above. The first outer periphery 1121 is located inside the second outer periphery 1122, and the outer diameter of the first outer periphery 1121 is larger than the outer diameter of the second outer periphery 1122. The positioning structure 1123 is disposed on the first outer periphery 1121, while the annular flange 1124 is disposed on the second outer periphery 1122 and protrudes from the first outer periphery 1121.

[0036] Therefore, when the male connector 100 is inserted into the female connector 200, at least a portion of the insertion portion 112 is accommodated within the socket 210, while the positioning structure 1123 is secured within the positioning groove 220. The annular flange 1124 is elastically bent toward the second outer periphery 1122 and elastically abuts against the inner wall of the socket 210. In this way, not only can the male connector 100 be inserted and fixed to the female connector 200, but the elastically deformable annular flange 1124 can also achieve good sealing, dustproof, and waterproof effects.

[0037] More specifically, the connector male head 100 of the connector assembly of this utility model includes the insulating body 110 as described above and the plurality of conductive bodies 120 as described above.

[0038] The insulating body 110 includes an outer shell 111 as described above and a plug-in portion 112 as described above. The plug-in portion 112 is disposed at one end of the outer shell 111. In this embodiment, the plug-in portion 112 and the outer shell 111 are assembled as two pieces, but in other embodiments, the plug-in portion 112 and the outer shell 111 may also be integrally formed components, depending on the design process or usage requirements. The plug-in portion 112 mainly has a first outer periphery 1121 as described above, a second outer periphery 1122 as described above, a positioning structure 1123 as described above, and an annular flange 1124 as described above. The first outer periphery 1121 is located between the outer shell 111 and the second outer periphery 1122, that is, the first outer periphery 1121 and the second outer periphery 1122 are arranged sequentially away from the outer shell 111. The outer diameter of the first outer periphery 1121 is larger than the outer diameter of the second outer periphery 1122. The positioning structure 1123 is disposed on the first outer periphery 1121, and the annular flange 1124 is disposed on the second outer periphery 1122 and protrudes from the first outer periphery 1121. In this embodiment, the entire insertion part 112 is integrally formed, that is, the positioning structure 1123 and the annular flange 1124 are integrally formed on the first outer periphery 1121 and the second outer periphery 1122, respectively, thereby effectively ensuring the structural strength of the positioning structure 1123 and the annular flange 1124 to prevent them from easily falling off the first outer periphery 1121 or the second outer periphery 1122. However, this utility model is not limited to this. In other embodiments, the positioning structure 1123 and the annular flange 1124 can also be fixed on the first outer periphery 1121 and the second outer periphery 1122 by means of bonding, welding or snap-fitting. Furthermore, the plug portion 112 in this embodiment is made of rubber, so the annular flange 1124 can undergo elastic deformation when subjected to force. However, this utility model is not limited to this, as long as the plug portion 112 is made of an elastic insulating material.

[0039] The conductor 120 is made of a material with good conductivity. At least a portion of each conductor 120 is disposed within the insertion portion 112, and each conductor 120 is surrounded by a second outer periphery 1122. In this embodiment, each conductor 120 is a hollow cylindrical shape with a conductive slot 121, and the socket 210 of the connector female head 200 is provided with a plurality of conductive pins 230 corresponding to the conductive slots 121 of each conductor 120. Each conductive pin 230 is inserted into the conductive slots 121 of each conductor 120 to form an electrical connection, but this invention is not limited thereto. For example, each conductor 120 of the connector male head 100 of this invention can also be in the form of pins, so that the plurality of conductive slots 121 provided inside the socket 210 of the connector female head 200 can be inserted to form an electrical connection. In other words, this invention does not specifically limit the form of each conductor 120 of the male connector 100 to a pin or a slot, so those skilled in the art should be able to make corresponding adjustments according to different needs.

[0040] To further explain, the annular flange 1124 gradually tapers from the second outer periphery 1122 in a direction away from each conductor 120. In other words, the outer diameter of the annular flange 1124 is thicker at the root connecting to the second outer periphery 1122, while the outer diameter of the annular flange 1124 is thinner at the end away from the second outer periphery 1122. This not only strengthens the structural strength at the root of the annular flange 1124, but also reduces the structural strength at the end of the annular flange 1124, making it more conducive to elastic deformation. In this embodiment, the cross-sectional shape of the annular flange 1124 is generally an isosceles triangle, but this invention is not limited to this. For example, the cross-sectional shape of the annular flange 1124 can also be a right triangle, trapezoid, or other shapes, as long as the annular flange 1124 gradually tapers from the second outer periphery 1122 in a direction away from each conductor 120. In this embodiment, the annular flange 1124 also protrudes from the positioning structure 1123. That is, the end of the annular flange 1124 protrudes sequentially from the positioning structure 1123, the first outer periphery 1121 and the second outer periphery 1122, thereby ensuring that the annular flange 1124 has sufficient length to generate elastic deformation and abut against the inner wall of the socket 210, thereby ensuring the dustproof sealing and waterproof performance between the male connector 100 and the female connector 200.

[0041] Furthermore, in this embodiment, the positioning groove 220 is an annular groove, and the positioning structure 1123 is an annular protrusion. In other words, the positioning groove 220 is a groove surrounding the inner wall of the connector female head 200, while the positioning structure 1123 is a protrusion surrounding the first outer periphery 1121, thereby ensuring that the positioning structure 1123 can be locked and fixed in the positioning groove 220 when the connector male head 100 of this invention is inserted into the connector female head 200 at any angle. However, this invention is not limited to this. For example, when the insertion part 112 is a rectangular body, the positioning structure 1123 can also be four protrusions and disposed on the four side planes of the insertion part 112, and the positioning groove 220 can be correspondingly four grooves. Therefore, the matching form of the positioning structure 1123 and the positioning groove 220 should be adjustable according to different needs. Furthermore, in this embodiment, the cross-sectional shape of the positioning groove 220 is a concave arc groove, while the cross-sectional shape of the positioning structure 1123 is an arc protrusion, which facilitates the positioning structure 1123 to be inserted into the positioning groove 220, but this utility model is not limited thereto.

[0042] Furthermore, the insertion portion 112 also has a stop ring 1125 as described above. The first outer periphery 1121 is connected between the stop ring 1125 and the second outer periphery 1122, that is, the stop ring 1125 is located between the outer shell 111 and the first outer periphery 1121. Therefore, when the male connector 100 is inserted into the female connector 200, the stop ring 1125 can abut against the female connector 200 to prevent the male connector 100 from being inserted further, thereby achieving the effect of stopping and limiting.

[0043] The male connector 100 of this utility model and the male connector 100 in the connector assembly have a first outer periphery 1121 and a second outer periphery 1122 formed on the insertion portion 112. The first outer periphery 1121 is located between the outer shell 111 and the second outer periphery 1122. The outer diameter of the first outer periphery 1121 is larger than the outer diameter of the second outer periphery 1122. The positioning structure 1123 is disposed on the first outer periphery 1121, and the annular flange 1124 is disposed on the second outer periphery 1122 and protrudes from the first outer periphery 1121. This allows sufficient space for the annular flange 1124 to elastically deform and bend toward the outer shell 111 when the male connector 100 is inserted into the female connector 200, thereby achieving a good sealing, dustproof and waterproof effect. At the same time, the positioning structure 1123 is fixed in the positioning groove 220 of the female connector 200 to form a positioning and prevent the two from separating.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A male connector head for insertion and fixing with a female connector head (200), the female connector head (200) having a socket (210) and a positioning groove (220), the positioning groove (220) being located on an inner wall of the socket (210), characterized in that, The male connector (100) includes: An insulating body (110) includes an outer shell (111) and a plug-in portion (112) disposed at one end of the outer shell (111). The plug-in portion (112) has a first outer periphery (1121), a second outer periphery (1122), a positioning structure (1123), and an annular flange (1124). The first outer periphery (1121) is located between the outer shell (111) and the second outer periphery (1122). The outer diameter of the first outer periphery (1121) is larger than the outer diameter of the second outer periphery (1122). The positioning structure (1123) is disposed on the first outer periphery (1121), and the annular flange (1124) is disposed on the second outer periphery (1122) and protrudes beyond the first outer periphery (1121). A plurality of conductors (120), at least a portion of each conductor (120) is disposed within the plug portion (112) and surrounded by the second outer periphery (1122); When the male connector (100) is inserted into the female connector (200), at least a portion of the insertion part (112) and at least a portion of each of the conductors (120) are accommodated in the socket (210), the positioning structure (1123) is secured in the positioning groove (220), and the annular flange (1124) is elastically bent toward the outer shell (111) and elastically abuts against the inner wall of the socket (210).

2. The male connector according to claim 1, characterized in that, The annular flange (1124) gradually tapers from the second outer periphery (1122) toward the direction away from each of the conductors (120).

3. The male connector according to claim 1, characterized in that, The positioning groove (220) is an annular groove, and the positioning structure (1123) is an annular convex strip.

4. The male connector according to claim 1, characterized in that, The annular flange (1124) also protrudes from the positioning structure (1123).

5. The male connector according to claim 1, characterized in that, The plug-in portion (112) also has a stop ring (1125), and the first outer periphery (1121) is connected between the stop ring (1125) and the second outer periphery (1122). When the male connector (100) is plugged into the female connector (200), the stop ring (1125) abuts against the female connector (200).

6. A connector assembly, characterized in that, include: A female connector (200) has a socket (210) and a positioning groove (220), the positioning groove (220) being located on an inner wall of the socket (210); and A male connector (100) has a plug portion (112), the plug portion (112) having a first outer periphery (1121), a second outer periphery (1122), a positioning structure (1123) and an annular flange (1124), the first outer periphery (1121) being located inside the second outer periphery (1122), the outer diameter of the first outer periphery (1121) being larger than the outer diameter of the second outer periphery (1122), the positioning structure (1123) being disposed on the first outer periphery (1121), and the annular flange (1124) being disposed on the second outer periphery (1122) and protruding beyond the first outer periphery (1121); When the male connector (100) is inserted into the female connector (200), at least a portion of the insertion part (112) is accommodated in the socket (210), the positioning structure (1123) is secured in the positioning groove (220), and the annular flange (1124) is elastically bent toward the second outer periphery (1122) and elastically abuts against the inner wall of the socket (210).

7. The connector assembly according to claim 6, characterized in that, The annular flange (1124) extends outward from the second outer periphery (1122) in a gradually receding direction.

8. The connector assembly according to claim 6, characterized in that, The positioning groove (220) is an annular groove, and the positioning structure (1123) is an annular convex strip.

9. The connector assembly according to claim 6, characterized in that, The annular flange (1124) also protrudes from the positioning structure (1123).

10. The connector assembly according to claim 6, characterized in that, The plug-in portion (112) also has a stop ring (1125), and the first outer periphery (1121) is connected between the stop ring (1125) and the second outer periphery (1122). When the male connector (100) is plugged into the female connector (200), the stop ring (1125) abuts against the female connector (200).