Waterproof female seat connector with annular locking structure

Abstract

The utility model discloses a waterproof female seat connector with an annular locking structure, comprising a plastic housing, the front end of which is provided with a butt slot, the plastic housing is provided with an inner circular hole penetrating through the butt slot, the front end of the inner circular hole is provided with a butt joint cylinder, the butt joint cylinder is internally provided with a stop surface, and the exterior of the butt joint cylinder is provided with a waterproof ring; the annular locking elastic piece is clamped and fixed in the inner round hole, the annular locking elastic piece is stamped to form an elastic abutting piece, and the tail end of the elastic abutting piece is bent outwards and flanged to form a blocking piece; the outer conductor is provided with an annular locking surface, the outer conductor is arranged in the inner round hole in a penetrating manner, the front end surface of the outer conductor is in abutting contact with the stopping surface, the outer conductor is further arranged in the annular locking elastic piece in a penetrating manner, the elastic abutting piece abuts against the outer surface of the outer conductor, and the blocking piece abuts against the annular locking surface to form an annular locking structure; the inner conductor is arranged in the insulator in a penetrating mode and is fixed in the outer conductor in a penetrating mode through the insulator, a cable connected with the inner conductor extends out of the outer conductor and the plastic shell, and the cable and the plastic shell are assembled in a sealing mode through a sealing rubber ring.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to a waterproof female socket connector with an annular locking structure. Background technology:

[0002] The main supporting fields of connectors include transportation, communications, networks, IT, medical treatment, home appliances, etc. The rapid development of the technical level of products in the supporting fields and the rapid growth of the market have strongly driven the development of connector technology. So far, connectors have developed into a series of professional products with a complete range of products, rich varieties and specifications, diverse structural types, subdivided professional directions, obvious industry characteristics, and standardized standard systems.

[0003] As a type of connector, a coaxial connector can be used to interconnect circuit boards, RF modules, and circuit boards.

[0004] The Chinese utility model patent with application number 201922358233.X discloses a coaxial waterproof connector, including an outer shell and a coaxial line, wherein an outer conductor is arranged in the outer shell, the coaxial line extends into the outer shell, the main body of the coaxial line is located behind the outer conductor, the core of the coaxial line extends into the outer conductor to be connected to the inner conductor arranged in the outer conductor, and a crimping tube for pressing and fastening the outer conductor to the coaxial line is sleeved on the outer conductor. Among them, the locking structure of the outer shell and the outer conductor is as follows: a clamping ring groove for clamping is arranged in front of the first annular boss, a clamping window is arranged on the outer shell correspondingly, and a clamping ring with a hoop-like structure is also arranged, and the clamping ring passes through the clamping window, extends into the outer shell, and clamps into the clamping ring groove to fix the outer conductor.

[0005] However, since a fixing window is provided on the outer shell, there will still be a gap between the fixing window when the clamping ring passes through the fixing window, which will lead to poor sealing and waterproof performance, and it is easy for water vapor or even water to enter, which will not only affect the service life of the outer shell, but also affect the waterproof performance of the entire connector, and thus affect the performance of the connector.

[0006] In view of this, the present invention proposes the following technical solution. Utility model content:

[0007] The utility model aims to overcome the deficiencies of the prior art and provide a waterproof female socket connector with an annular locking structure.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: the waterproof female socket connector with an annular locking structure comprises: a plastic shell, a front end of which is provided with a socket for inserting a plug, the plastic shell is provided with an inner circular hole penetrating the socket along its rear end, and the plastic shell is formed with a docking sleeve at the front end of the inner circular hole, a stop surface is provided on the inner side of the front end of the docking sleeve, and a waterproof ring for contacting with the plug is provided on the outside of the front end of the docking sleeve; an annular locking spring piece, which is clamped and fixed in the inner circular hole, and the annular locking spring piece is stamped to form an elastic pressing piece obliquely distributed from back to front, and the end of the elastic pressing piece is bent outward and turned over The outer conductor is provided with a vertically distributed annular locking surface, the outer conductor is inserted into the inner circular hole, and the front end surface of the outer conductor is pressed and contacted with the stop surface, and the outer conductor is also inserted into the annular locking spring sheet, and the elastic pressing sheet is pressed against the outer surface of the outer conductor, and the baffle is pressed against the annular locking surface to form an annular locking structure; the inner conductor is inserted into the insulator and fixed in the outer conductor through the insulator, the cable connected to the inner conductor extends out of the outer conductor and the rear end of the plastic shell, and the cable is sealed and assembled with the plastic shell through a sealing rubber ring, and the rear end of the plastic shell is provided with a back cover for fastening the sealing rubber ring.

[0009] Furthermore, in the above technical solution, the annular locking spring comprises an annular main body, a plurality of barbed pieces formed at the rear end of the annular main body and extending obliquely backward, and a plurality of elastic pressure pieces formed by stamping and bending inward along the outer surface of the annular main body. A thrust step surface is provided on the front inner wall of the inner circular hole, and the front end of the annular main body abuts against the thrust step surface, and the barbed piece is clamped and positioned with the rear inner wall of the inner circular hole.

[0010] Furthermore, in the above technical solution, the blocking piece has a locking pressing plane in a vertical direction, and the locking pressing plane is in contact with the annular locking surface.

[0011] Furthermore, in the above technical solution, the inner side surface of the elastic pressure plate is set to a circular arc surface, which is wrapped around the outer surface of the outer conductor; multiple barbed plates are evenly distributed around the circumference; multiple barbed plates are evenly distributed around the circumference; multiple elastic pressure plates are evenly distributed around the circumference.

[0012] Furthermore, in the above technical solution, the front end and the rear end of the annular body are respectively formed with a first annular convex rib and a second annular convex rib protruding outward, and the outer surfaces of the first annular convex rib and the second annular convex rib are flush, wherein the cross-sections of the first annular convex rib and the second annular convex rib are both arc-shaped.

[0013] Furthermore, in the above technical solution, the rear end of the annular body is further bent to form an extension piece that extends backward and is inclined and in a trumpet shape, and the extension piece is punched to form a plurality of notches, so that a barbed piece is formed between two adjacent notches.

[0014] Furthermore, in the above technical solution, a plurality of first waterproof ribs are arranged on the outside of the waterproof ring, and the outer surface of the first waterproof ribs is an arc-shaped surface; a plurality of second waterproof ribs are arranged on the outside of the sealing rubber ring, and the outer surface of the second waterproof ribs is an arc-shaped surface and contacts the inner wall of the plastic shell.

[0015] Furthermore, in the above technical solution, the outer conductor includes a contact area located at the front section and a wire wrapping area located at the rear section, and the diameter of the wire wrapping area is smaller than the diameter of the contact area, so that the annular locking surface is formed between the contact area and the wire wrapping area.

[0016] Furthermore, in the above technical solution, an annular groove for inserting a plug is formed between the inner wall of the front end of the outer conductor and the insulator; the plug-in port of the outer conductor is set as a circular closed ring opening, and the contact area of ​​the outer conductor is also formed with a plurality of contact springs, which are located on the rear side of the circular closed ring opening, and the end of the contact spring extends from the outside to the inside into the annular groove, and the position of the insulator corresponding to the contact spring is provided with an air avoidance groove.

[0017] Furthermore, in the above technical solution, an arc-shaped contact surface is provided at the end of the contact spring piece; a hole is formed at the contact area of ​​the outer conductor corresponding to the position of the contact spring piece, and an inner stop position is also provided at the front end of the hole which is stretched and formed to bulge from the outside to the inside, and the inner stop position is located on the front side of the end of the contact spring piece.

[0018] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model arranges a waterproof ring on the outside of the front end of the docking tube of the plastic shell, and contacts the plug inserted into the socket through the waterproof ring to form a sealed assembly to achieve a good waterproof effect, and the cable forms a sealed assembly with the plastic shell through the sealing rubber ring, so that the utility model and the cable can also achieve a good waterproof effect. The utility model is provided with an annular locking spring sheet, and the annular locking spring sheet is clamped and fixed in the inner circular hole; when the outer conductor is installed in the inner circular hole, the front end surface of the outer conductor is pressed and contacted with the stop surface in the plastic shell, which can prevent the outer conductor from continuing to push forward, thereby achieving the purpose of stopping thrust, and the outer conductor is also penetrated by the annular locking spring sheet, and the elastic pressing sheet is pressed against the outer surface of the outer conductor to support and position the outer conductor, so that the outer conductor is more stably installed in the plastic shell, and the baffle is abutted against the annular locking surface to form an annular locking structure, thereby preventing the outer conductor from retreating, thereby replacing the clamping ring in the background technology to lock and position the outer conductor in the plastic shell, and at the same time achieving the purpose of excellent locking effect, so that there is no need to open a clamping window outside the plastic shell for installing the clamping ring for locking the outer conductor, thereby avoiding the risk of water / water vapor entering from the gap between the clamping window and the clamping ring, so as to achieve a better waterproof effect, which can not only improve the service life of the outer conductor, but also improve the performance of the connector, thereby having extremely strong market competitiveness. Description of the drawings:

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 It is a three-dimensional exploded view of the utility model;

[0021] Figure 3 It is an assembly diagram of the annular locking spring piece and the outer conductor in the utility model;

[0022] Figure 4 It is an assembly diagram of the annular locking spring and the plastic shell in the utility model;

[0023] Figure 5 It is a three-dimensional diagram of the annular locking spring in the utility model;

[0024] Figure 6 It is a three-dimensional diagram of the annular locking spring in the utility model from another perspective;

[0025] Figure 7 It is a left view of the annular locking spring in the utility model;

[0026] Figure 8 It is a cross-sectional view of the annular locking spring in the utility model;

[0027] Fig. 9 It is a structural diagram of the utility model and the plug assembly;

[0028] Fig.10 It is a right view of the utility model; Specific implementation method:

[0029] The utility model is further described below in conjunction with specific embodiments and drawings.

[0030] See Figure 1-10 As shown, a waterproof female socket connector with an annular locking structure includes: a plastic shell 2, an annular locking spring 1, an outer conductor 3, an inner conductor 4, an insulator 5, a cable 6 and a sealing rubber ring 7.

[0031] The front end of the plastic shell 2 is provided with a socket 20 for inserting the plug 100, and the plastic shell 2 is provided with an inner hole 21 that passes through the socket 20 along its rear end, and the plastic shell 2 is formed with a docking sleeve 22 at the front end of the inner hole 21, and a stop surface 221 is provided on the inner side of the front end of the docking sleeve 22, and a waterproof ring 23 for contacting the plug 100 is provided on the front end of the docking sleeve 22; the annular locking spring piece 1 is clamped and fixed in the inner hole 21, and the annular locking spring piece 1 is stamped to form an elastic pressing piece 13 that is tilted from the back to the front, and the end of the elastic pressing piece 13 is bent outward to form a stopper 14; the outer conductor 3 is provided with a vertically distributed annular The outer conductor 3 is provided in the inner circular hole 21, and the front end face of the outer conductor 3 is pressed and contacted with the stop face 221, and the outer conductor 3 is also provided in the annular locking spring sheet 1, and the elastic pressing sheet 13 is pressed against the outer surface of the outer conductor 3, and the stop sheet 14 is pressed against the annular locking surface 30 to form an annular locking structure; the inner conductor 4 is provided in the insulator 5, and is fixed in the outer conductor 3 through the insulator 5, the cable 6 connected to the inner conductor 4 extends out of the outer conductor 3 and the rear end of the plastic shell 2, and the cable 6 is sealed and assembled with the plastic shell 2 through the sealing rubber ring 7, and the rear end of the plastic shell 2 is provided with a back cover 8 for fastening the sealing rubber ring 7. That is to say, the utility model sets a waterproof ring 23 on the front end of the docking tube 22 of the plastic shell 2, and the waterproof ring 23 contacts the plug 100 inserted into the socket 20 to form a sealed assembly to achieve a good waterproof effect, and the cable 6 forms a sealed assembly with the plastic shell 2 through the sealing rubber ring 7, so that the utility model and the cable 6 can also achieve a good waterproof effect. The utility model is additionally provided with an annular locking spring sheet 1, and the annular locking spring sheet 1 is clamped and fixed in the inner circular hole 21; when the outer conductor 3 is installed in the inner circular hole 21, the front end face of the outer conductor 3 is pressed and contacted with the stop surface 221 in the plastic shell 2, which can prevent the outer conductor 3 from continuing to push forward, so as to achieve the purpose of stopping thrust, and the outer conductor 3 is also penetrated in the annular locking spring sheet 1, and the elastic pressing sheet 13 is pressed against the outer surface of the outer conductor 3 to support and position the outer conductor 3, so that the outer conductor 3 is more stably installed in the plastic shell 2, and the stopper 14 and the annular lock The stop surface 30 abuts to form an annular locking structure, thereby preventing the outer conductor 3 from retreating, thereby replacing the clamping ring in the background technology to lock the outer conductor 3 in place in the plastic shell 2, and at the same time achieving an excellent locking purpose, so that there is no need to open a fixing window on the outside of the plastic shell for the installation of the clamping ring for locking the outer conductor 3, thereby avoiding the risk of water / water vapor entering from the gap between the fixing window and the clamping ring, so as to achieve a better waterproof effect, which can not only improve the service life of the outer conductor 3, but also improve the performance of the connector, thereby having extremely strong market competitiveness.

[0032] The structure of the annular locking spring piece 1 is described in detail below.

[0033] The annular locking spring piece 1 can be formed by wrapping a metal sheet in a circle, or can be formed by stamping a metal tube. In this embodiment, the annular locking spring piece 1 is formed by wrapping a metal sheet in a circle, and its specific structure is as follows:

[0034] The annular locking spring piece 1 comprises an annular body 11, a plurality of barbed pieces 12 formed at the rear end of the annular body 11 and distributed in an annular manner, and a plurality of elastic pressing pieces 13 formed by inwardly stamping and bending along the outer surface of the annular body 11 and distributed in an annular manner, wherein the barbed piece 12 extends outwardly and tilts, while the elastic pressing piece 13 extends forward, and the end of the elastic pressing piece 13 is bent outwardly and turned to form a baffle 14, and the baffle 14 has a vertical locking buckle pressing plane 141. The locking buckle pressing plane 141 is used to contact the vertically distributed annular locking surface 30 of the outer conductor 3, and its contact area is large, and the contact is more stable, thereby ensuring a better locking effect. When the annular locking spring piece 1 is installed in the inner circular hole 21, the front end of the annular main body 11 abuts against the thrust step surface 211, and the barb piece 12 is clamped and positioned with the rear inner wall of the inner circular hole 21, effectively preventing the annular locking spring piece 1 from retreating, thereby ensuring that the annular locking spring piece 1 is clamped and fixed in the inner circular hole 21.

[0035] The plurality of barbed pieces 12 are evenly distributed along the circumference. The plurality of elastic pressing pieces 13 are evenly distributed along the circumference.

[0036] In order to make the annular locking spring piece 1 and the outer conductor 3 in stable contact, and thus ensure that the annular locking spring piece 1 can be installed more stably between the plastic shell 2 and the outer conductor 3, the inner side surface of the elastic pressing piece 13 is also set to a circular arc surface 131. The circular arc surface 131 of the elastic pressing piece 13 matches the curvature of the outer surface of the outer conductor 3, so that the circular arc surface 131 can completely cover the outer surface of the outer conductor 3, forming a surface contact or a line contact, and the increased contact area, so that the annular locking spring piece 1 and the outer conductor 3 are in stable contact, and the annular locking spring piece 1 can be installed more stably between the plastic shell 2 and the outer conductor 3.

[0037] In order to make the annular body 11 more stably installed in the inner circular hole 21 of the plastic shell 2, the following design is made: the front end and the rear end of the annular body 11 are respectively formed with a first annular convex rib 15 and a second annular convex rib 16 protruding outward, and the outer surfaces of the first annular convex rib 15 and the second annular convex rib 16 are flush. When the annular locking spring 1 is installed in the inner circular hole 21 of the plastic shell 2, since the outer surfaces of the first annular convex rib 15 and the second annular convex rib 16 are flush and protrude from the annular body 11, the outer surfaces of the first annular convex rib 15 and the second annular convex rib 16 are in line contact with the hole wall of the inner circular hole 21, so that the front and rear ends of the annular body 11 are stably positioned in the inner circular hole 21, ensuring that the entire annular locking spring 1 is more stably installed in the inner circular hole 21 of the plastic shell 2.

[0038] Among them, the cross-sections of the first annular convex rib 15 and the second annular convex rib 16 are both arc-shaped, so that the outer surfaces of the first annular convex rib 15 and the second annular convex rib 16 can better form linear contact with the hole wall of the inner circular hole 21, and the entire annular locking spring piece 1 can be more smoothly installed in the inner circular hole 21.

[0039] The rear end of the annular body 11 is also bent to form an extension piece 17 that extends obliquely backward and is in the shape of a trumpet. The extension piece 17 is punched to form a plurality of notches 171, so that a barbed piece 12 is formed between two adjacent notches 171, so that the barbed piece 12 has sufficient strength. The barbed piece 12 has better elastic deformation ability, so that the barbed piece 12 can be better axially pressed with the inner circular hole 21 to hold and position it, and firmly stuck in the plastic shell 2, thereby effectively preventing the annular locking spring piece 1 from accidentally retreating.

[0040] The upper end of the plastic shell 2 is provided with a locking opening 200 for the locking buckle 101 of the plug 100 to be inserted into and locked with the locking buckle 101 .

[0041] The waterproof ring 23 is provided with a plurality of first waterproof ribs 231 on the outside. The outer surface of the first waterproof ribs 231 is an arc-shaped surface, which can make the plug 100 more smoothly inserted and improve the convenience of use. The plurality of first waterproof ribs 231 are in contact with the plug 100 to form a multi-layer waterproof structure, and the waterproof effect is better.

[0042] The outer conductor 3 includes a contact area 301 at the front section and a wire wrapping area 302 at the rear section, and the diameter of the wire wrapping area 302 is smaller than the diameter of the contact area 301 , so that the annular locking surface 30 is formed between the contact area 301 and the wire wrapping area 302 .

[0043] An annular groove 300 for inserting the plug 100 is formed between the inner wall of the front end of the outer conductor 3 and the insulator 5; the plug-in port of the outer conductor 3 is set as a circular closed ring opening 303, so that the strength of the outer conductor 3 is better, and it is not easy to crack due to the rounding gap, thereby improving the quality of the product.

[0044] The contact area 301 of the outer conductor 3 is also formed with a plurality of contact springs 31, which are located at the rear side of the circular closed ring, and the end of the contact spring 31 extends inwardly into the annular groove 300. The contact spring 31 is used to form a better plugging and unplugging force when plugging with the plug 100, and can also improve the conduction ability. The end of the contact spring 31 is provided with an arc-shaped contact surface 311, which contacts the outer surface of the plug 100 through the arc-shaped contact surface 311, and has a large contact area, and the plugging and unplugging force effect is better; the contact area 301 of the outer conductor 3 is formed with a hole 32 corresponding to the contact spring 31, and the front end of the hole 32 is also provided with an inner stop 321 that is stretched and formed from the outside to the inside, and the inner stop 321 is located at the front side of the end of the contact spring 31. The function of the inner stop 321 is to prevent the inserted plug 100 from contacting the front end surface of the contact spring 31, directly pushing the contact spring 31 backward and damaging the contact spring 31, so as to protect the end of the contact spring 31. The end of the contact spring 31 is in a bent V-shape.

[0045] The insulating body 5 is provided with a clearance groove 51 at a position corresponding to the contact spring piece 31 so that the contact spring piece 31 can be used normally.

[0046] The outside of the sealing rubber ring 7 is provided with a plurality of second waterproof ribs 71, the outer surface of the second waterproof rib 71 is an arc surface and contacts the inner wall of the plastic shell 2, that is, it adopts a plurality of first waterproof ribs 231 to contact the plug 100, forming a multi-layer waterproof structure, and its waterproof effect is better.

[0047] The rear cover 8 is mounted on the rear end of the plastic shell 2 by snap-fitting.

[0048] In summary, the utility model sets a waterproof ring 23 on the outside of the front end of the docking tube 22 of the plastic shell 2, and the waterproof ring 23 contacts the plug 100 inserted into the socket 20 to form a sealed assembly to achieve a good waterproof effect, and the cable 6 forms a sealed assembly with the plastic shell 2 through the sealing rubber ring 7, so that the utility model and the cable 6 can also achieve a good waterproof effect. The utility model is additionally provided with an annular locking spring sheet 1, and the annular locking spring sheet 1 is clamped and fixed in the inner circular hole 21; when the outer conductor 3 is inserted into the inner circular hole 21, the front end face of the outer conductor 3 is pressed and contacted with the stop surface 221 in the plastic shell 2, which can prevent the outer conductor 3 from continuing to push forward, so as to achieve the purpose of stopping thrust, and the outer conductor 3 is also penetrated in the annular locking spring sheet 1, and the elastic pressing sheet 13 is pressed against the outer surface of the outer conductor 3 to support and position the outer conductor 3, so that the outer conductor 3 is more stably installed in the plastic shell 2, and the stopper 14 and the annular lock The stop surface 30 abuts to form an annular locking structure, thereby preventing the outer conductor 3 from retreating, thereby replacing the clamping ring in the background technology to lock the outer conductor 3 in place in the plastic shell 2, and at the same time achieving an excellent locking purpose, so that there is no need to open a fixing window on the outside of the plastic shell for the installation of the clamping ring for locking the outer conductor 3, thereby avoiding the risk of water / water vapor entering from the gap between the fixing window and the clamping ring, so as to achieve a better waterproof effect, which can not only improve the service life of the outer conductor 3, but also improve the performance of the connector, thereby having extremely strong market competitiveness.

[0049] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A waterproof female connector with an annular locking structure, characterized in that: It includes: A plastic shell (2), the front end of which is provided with a mating slot (20) for inserting a plug (100), the plastic shell (2) is provided with an inner circular hole (21) extending forward from the rear end thereof and penetrating the mating slot (20), the plastic shell (2) is formed with a mating sleeve (22) at the front end of the inner circular hole (21), a stopper surface (221) is provided on the inner side of the front end of the mating sleeve (22), and a waterproof ring (23) for contacting the plug (100) is provided on the outside of the front end of the mating sleeve (22); An annular locking spring piece (1) is clamped and fixed in the inner circular hole (21), and the annular locking spring piece (1) is punched to form an elastic pressing piece (13) that is distributed obliquely from the back to the front, and the end of the elastic pressing piece (13) is bent outward and turned to form a blocking piece (14); An outer conductor (3) is provided with a vertically distributed annular locking surface (30), the outer conductor (3) is inserted into the inner circular hole (21), and the front end surface of the outer conductor (3) is pressed against the stop surface (221), and the outer conductor (3) is also inserted into the annular locking spring sheet (1), and the elastic pressing sheet (13) is pressed against the outer surface of the outer conductor (3), and the stop sheet (14) is pressed against the annular locking surface (30) to form an annular locking structure; An inner conductor (4) is inserted into an insulator (5) and fixed in an outer conductor (3) through the insulator (5). A cable (6) connected to the inner conductor (4) extends out of the outer conductor (3) and the rear end of the plastic shell (2). The cable (6) is sealed with the plastic shell (2) through a sealing rubber ring (7). A rear cover (8) for fastening the sealing rubber ring (7) is provided at the rear end of the plastic shell (2).

2. A waterproof female connector with an annular locking structure according to claim 1, characterized in that: The annular locking spring piece (1) comprises an annular body (11), a plurality of barbed pieces (12) formed at the rear end of the annular body (11) and extending obliquely backward, and a plurality of elastic pressing pieces (13) formed by inwardly stamping and bending along the outer surface of the annular body (11); a thrust step surface (211) is provided on the front inner wall of the inner circular hole (21), the front end of the annular body (11) abuts against the thrust step surface (211), and the barbed piece (12) is clamped and positioned with the rear inner wall of the inner circular hole (21).

3. A waterproof female socket connector with an annular locking structure according to claim 2, characterized in that: The blocking piece (14) has a locking pressing plane (141) in a vertical direction, and the locking pressing plane (141) is in contact with the annular locking surface (30).

4. A waterproof female socket connector with an annular locking structure according to claim 2, characterized in that: The inner side surface of the elastic pressing piece (13) is configured as an arc surface (131), and the arc surface (131) is wrapped around the outer surface of the outer conductor (3); the plurality of barbed pieces (12) are evenly distributed along the circumference; and the plurality of elastic pressing pieces (13) are evenly distributed along the circumference.

5. The waterproof female socket connector with an annular locking structure according to claim 2, characterized in that: The front end and the rear end of the annular body (11) are respectively formed with a first annular convex rib (15) and a second annular convex rib (16) protruding outwards, the outer surfaces of the first annular convex rib (15) and the second annular convex rib (16) are flush, and the cross-sections of the first annular convex rib (15) and the second annular convex rib (16) are both arc-shaped.

6. A waterproof female socket connector with an annular locking structure according to claim 2, characterized in that: The rear end of the annular body (11) is further bent to form an extension piece (17) extending obliquely backward and in a trumpet shape. The extension piece (17) is punched to form a plurality of notches (171), so that a barbed piece (12) is formed between two adjacent notches (171).

7. A waterproof female socket connector with an annular locking structure according to any one of claims 1 to 6, characterized in that: The waterproof ring (23) is provided with a plurality of first waterproof ribs (231) on the outside, and the outer surface of the first waterproof ribs (231) is an arc-shaped surface; the sealing rubber ring (7) is provided with a plurality of second waterproof ribs (71) on the outside, and the outer surface of the second waterproof ribs (71) is an arc-shaped surface and contacts the inner wall of the plastic shell (2).

8. A waterproof female connector with an annular locking structure according to any one of claims 1 to 6, characterized in that: The outer conductor (3) comprises a contact area (301) located at the front section and a wire wrapping area (302) located at the rear section, and the diameter of the wire wrapping area (302) is smaller than the diameter of the contact area (301), so that the annular locking surface (30) is formed between the contact area (301) and the wire wrapping area (302).

9. The waterproof female connector with an annular locking structure according to claim 8, characterized in that: An annular groove (300) for inserting a plug (100) is formed between the inner wall of the front end of the outer conductor (3) and the insulator (5); the plug-in port of the outer conductor (3) is arranged as a circular closed ring opening (303), and the contact area (301) of the outer conductor (3) is also formed with a plurality of contact springs (31), the contact springs (31) are located at the rear side of the circular closed ring opening, and the ends of the contact springs (31) extend inwardly into the annular groove (300), and the insulator (5) is provided with a clearance groove (51) at a position corresponding to the contact springs (31).

10. A waterproof female connector with an annular locking structure according to claim 9, characterized in that: The end of the contact spring (31) is provided with an arc-shaped contact surface (311); the contact area (301) of the outer conductor (3) is formed with a hole (32) at a position corresponding to the contact spring (31), and the front end of the hole (32) is also provided with an inner stop (321) which is stretched and formed to bulge from the outside to the inside, and the inner stop (321) is located at the front side of the end of the contact spring (31).

Images