Waterproof circular connector and manufacturing process thereof

Abstract

The invention relates to a waterproof circular connector and a manufacturing process thereof, and relates to the technical field of electric connectors. The waterproof connector mainly comprises a male shell with a bell mouth and a positioning pin, a female plug comprises a female shell with a pin hole, a sealing ring groove and a dustproof sealing ring, the male shell and the female plug are matched through the positioning pin and the pin hole to achieve accurate butt joint, and the waterproof performance is ensured through a multi-stage sealing structure. In addition, an electrical contact piece is designed in the connector, so that reliable electrical connection is ensured; and a dustproof cover is arranged outside and is fixed through threads to enhance the protection effect. The manufacturing process adopts an injection molding and hot pressing combined mode, thereby improving the production efficiency and reducing the cost. According to the invention, excellent waterproof and dustproof effects are achieved, stable electrical transmission capability is guaranteed, and the connector is suitable for electrical connection requirements in a complex environment.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connectors, and in particular to a waterproof circular connector and a manufacturing process thereof. Background Art

[0002] Waterproof circular connectors are widely used in industrial networks and communication systems, playing a crucial role in environments requiring a high level of protection. These connectors effectively ensure stable and reliable data transmission while also adapting to harsh working environments, such as those characterized by humidity and dust. With the increasing levels of industrial automation and the development of intelligent manufacturing, the demand for connectors is increasing, not only in terms of performance, but also in terms of installation efficiency and ease of maintenance.

[0003] Common waterproof circular connectors on the market currently primarily achieve high levels of protection through complex, multi-layer sealing structures. While these methods can meet demanding application requirements to a certain extent, they present practical limitations. The complex structure makes installation time-consuming and labor-intensive, and relies heavily on the operator's expertise. In scenarios with frequent assembly and disassembly, quickly and accurately completing the sealing process presents a significant challenge, directly impacting work efficiency and increasing the risk of potential failures. Therefore, a new technology solution is urgently needed to overcome this challenge, ensuring excellent protection while streamlining the assembly process. Summary of the Invention

[0004] In order to solve the above problems, the present application provides a waterproof circular connector and a manufacturing process thereof.

[0005] This application provides a waterproof circular connector and a manufacturing process thereof, which adopts the following technical solutions: A waterproof circular connector comprises a male plug and a female plug, the male plug comprising a male shell, the female plug comprising a female shell, the male shell comprising a male supporting end, the end of the male supporting end being provided with a socket, a positioning pin being convexly provided in the socket; the female shell comprising a female supporting end, the end of the female supporting end being recessed with a pin hole; a first dustproof sealing ring is fixedly sleeved on the outer side of the female supporting end, a sealing ring groove is provided on the outer side wall of the female supporting end, a second dustproof sealing ring is installed in the sealing ring groove, a fixing nut is fixedly provided on the outer side of the male shell, and an outer sealing ring is fixedly provided on one side of the fixing nut; when the female supporting end is fully inserted into the socket, the positioning pin is correspondingly inserted into the pin hole, the second dustproof sealing ring extends into the socket and contacts the inner wall of the socket, and the end of the male supporting end abuts against the first dustproof sealing ring.

[0006] By adopting the above technical solution, the waterproof circular connector achieves efficient and reliable waterproof performance and simple installation. The cooperation between the positioning pin and the pin hole ensures the position accuracy of the male and female plugs when docking, avoiding connection failure or leakage caused by misalignment. The design of the first dustproof sealing ring and the second dustproof sealing ring effectively prevents dust and moisture from entering the interior of the connector, improving the overall protection level. In addition, the setting of the fixing nut and the outer sealing ring further enhances the sealing of the connection part, preventing the influence of external environmental factors on the internal electrical contacts. These features make this connector particularly suitable for use in industrial network environments, meeting high standards of waterproof and dustproof requirements, while simplifying the installation and maintenance process.

[0007] Preferably, a first electrical contact is fixedly provided in the male housing, and a plurality of second electrical contacts are fixedly provided in the female housing, the first electrical contact includes a pin portion extending into the socket, and a plurality of second electrical contacts are fixedly provided in the female housing, the second electrical contact includes a pinhole portion, and a plurality of pin holes are also provided on the female socket end, the pinhole portion is fixedly provided in the pin hole, and when the positioning pin is inserted into the pin hole, the pin portion is correspondingly inserted into the pinhole portion.

[0008] By adopting this technical solution, a precise electrical connection is achieved between the male and female housings. The pin portion of the first electrical contact extends into the socket and aligns with the pinhole portion of the second electrical contact on the female housing, ensuring that the connectors can simultaneously complete the electrical connection function during mechanical docking. This design not only improves connection efficiency but also ensures stable signal and data transmission. When the locating pin is inserted into the pinhole, the precise fit between the pin portion and the pinhole portion further enhances connection reliability and reduces the risk of data interruption or loss due to poor contact.

[0009] Preferably, a dust cover is movably sleeved on the outside of the female shell, a snap-fitting protrusion is convexly provided on the outer side of the female shell, a snap-fitting portion is provided on the dust cover, and the first dustproof sealing ring and the snap-fitting protrusion limit the snap-fitting portion to limit the movable range of the dust cover.

[0010] By adopting the above technical solution, the dust cover can effectively prevent dust and other impurities from entering the connector interior, thereby improving the connector's protective performance. Specifically, the snap-on protrusion cooperates with the snap-on portion to define the dust cover's position on the female housing, preventing it from moving or falling off. Simultaneously, the first dustproof seal further strengthens the snap-on portion's position, ensuring that the dust cover securely covers the exterior of the female housing, thereby improving the reliability of the overall structure. This design not only simplifies the installation process but also extends the connector's service life.

[0011] Preferably, an internal thread is provided on the interior of the dust cover, an external thread is provided on the surface of the male housing, and the dust cover is threadably fixed to the male housing.

[0012] By adopting this technical solution, the dust cover and male housing are connected by a threaded connection using internal and external threads. This design makes installation and removal of the dust cover more convenient and quick, requiring no complex tools or skills. It also improves the stability of the connection, effectively preventing dust and other impurities from entering the connector, and further enhancing the overall protection performance of the waterproof circular connector.

[0013] Preferably, the side of the fixing nut facing the outer sealing ring is set to be a plane.

[0014] By adopting this technical solution, the flat side of the retaining nut facing the outer sealing ring effectively increases the contact area between the retaining nut and the outer sealing ring, thereby improving the fit between the two. This design helps improve the overall sealing performance of the connector, reducing the risk of leakage due to poor contact, and simplifies the need to adjust the outer sealing ring position during assembly, improving production efficiency.

[0015] Preferably, a limiting protrusion is provided on one side of the fixing nut facing the outer sealing ring.

[0016] By adopting this technical solution, a stopper protrusion is provided on the side of the retaining nut facing the outer sealing ring, effectively preventing the outer sealing ring from axial movement or falling off during use, thereby improving the overall sealing performance and reliability of the connector. This design simplifies the assembly process, ensures the outer sealing ring is in a stable position without the need for additional fixing devices, and improves the durability of the product.

[0017] Preferably, the positioning pin is configured as a T-shaped pin.

[0018] By adopting the above technical solution, the positioning pin is configured as a T-pin, which effectively improves the stability of the connection. The T-shaped design provides better guidance and positioning accuracy when inserting the positioning pin into the pin hole, thus preventing connection failure or loosening caused by positioning deviation. The unique shape of the T-pin increases the load-bearing area, making it less likely to dislodge under external tension or torque, significantly improving the overall reliability of the connector.

[0019] Preferably, the male housing further comprises a male contact end, which is provided with a first fixing groove; the female housing further comprises a female contact end, which is provided with a second fixing groove; the first electrical contact further comprises a first contact portion, which extends from the first fixing groove to the outside of the male contact end; the second electrical contact further comprises a second contact portion, which extends from the second fixing groove to the outside of the female contact end.

[0020] By adopting this technical solution, a stable connection and precise positioning between the electrical contacts and the housing are achieved. The design of the first fixing groove of the male contact end and the second fixing groove of the female contact end firmly secures the first contact portion of the first electrical contact and the second contact portion of the second electrical contact, ensuring that they will not loosen or fall off during use. This structure not only improves the reliability of the connector, but also facilitates assembly and maintenance, while ensuring good electrical connection performance.

[0021] A manufacturing process for a waterproof circular connector, for preparing the waterproof circular connector according to any one of claims 1 to 8, comprising the following steps: Step 1: placing the first electrical contact and the second electrical contact in an injection mold, and wrapping the outer surfaces of the first electrical contact and the second electrical contact with a protective layer; Step 2: pre-place the first electrical contact and the second electrical contact with the protective layer into the injection mold again, and integrally mold the male housing and the female housing on the outside of the first electrical contact and the second electrical contact; The fixing nut is made by injection molding, and is sleeved on the outside of the male housing. The end of the fixing nut is deformed by hot pressing, so that the fixing nut is riveted to the male housing.

[0022] By adopting the above technical solution, efficient manufacturing of waterproof circular connectors is achieved. By wrapping the outer surfaces of the first and second electrical contacts with a protective layer, the corrosion resistance and mechanical strength of the product are improved, and the service life is extended. The male and female housings are integrally molded on the exterior of the electrical contacts, which simplifies the assembly process, improves production efficiency, and enhances the stability of the overall structure. The fixing nut is made by injection molding and riveted to the male housing by hot pressing, avoiding the loosening problem that may occur with traditional threaded connections and further improving the reliability of the connection. The entire manufacturing process does not require complex assembly steps, reducing production costs and making it suitable for large-scale industrial production.

[0023] Step three: Use hot stamping to press the snap-fit ​​protrusion and sealing ring groove out of the surface of the mother shell, and print the logo symbol on the surface of the snap-fit ​​protrusion. The dust cover is made of injection molding, and the dust cover is installed on the mother shell. Then, the first dustproof sealing ring, the second dustproof sealing ring and the outer sealing ring are installed respectively, and then the thread is opened.

[0024] By adopting this technical solution, a snap-on bump and sealing ring groove are formed on the surface of the female housing. The snap-on bump is also printed with a logo symbol, improving product recognition and assembly precision. Combined with the first and second dustproof sealing rings and the outer sealing ring, the connector's overall sealing performance is effectively enhanced, reducing the risk of dust and moisture intrusion. The final threading operation simplifies the manufacturing process and ensures a tight fit between all components.

[0025] Preferably, in step 2, after the male housing and the female housing are injection-molded with the first electrical contact and the second electrical contact, glue is dispensed in the first fixing groove and the second fixing groove.

[0026] By adopting this technical solution, after the male and female housings are injection molded with the first and second electrical contacts, respectively, glue is applied within the first and second fixing grooves. This further enhances the connection strength between the components, preventing loosening due to vibration or external impact, thereby improving the overall reliability of the connector. This glue treatment also enhances waterproofing, preventing moisture from penetrating through the connection gaps and extending the connector's service life.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting the first dustproof sealing ring and the second dustproof sealing ring on the female end, cooperating with the fixing nut and the outer sealing ring on the male housing, a multiple sealing effect is achieved, which significantly improves the waterproof and dustproof performance of the connector and meets the requirements of high protection level; 2. The precise matching design of the positioning pin and the pin hole ensures the accuracy of the male and female plugs when docking, reduces the difficulty of alignment during installation, and improves assembly efficiency; 3. The first dustproof sealing ring and the clamping protrusion jointly limit the range of movement of the dustproof cover, optimize the installation structure of the dustproof cover, simplify the maintenance operation, and reduce the difficulty of disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 and Figure 2 It is a three-dimensional diagram of the male plug at different angles; Figure 3 It is a schematic diagram of the fixing nut structure; Figure 4 It is a cross-sectional view of the male plug; Figure 5 and Figure 6 It is a three-dimensional view of the female plug at different angles; Figure 7 This is a cross-sectional view of the female plug; Figure 8 It is a three-dimensional view of the specific structure of the mother shell.

[0029] Explanation of the accompanying drawings: 10, male plug; 1, male housing; 11, external thread; 12, male contact end; 121, first fixing groove; 13, male supporting end; 131, socket; 132, positioning pin; 14, first electrical contact; 141, first contact portion; 142, pin portion; 15, fixing nut; 151, limiting protrusion; 152, positioning hole; 16, external sealing ring; 17, movable nut; 20, female plug; 2, female housing; 21, dust cover; 211, internal thread; 212, snap-fit ​​portion; 22, first dustproof sealing ring; 23, second dustproof sealing ring; 24, snap-fit ​​protrusion; 25, female supporting end; 251, pin hole; 252, pin hole; 253, sealing ring groove; 26, second electrical contact; 261, second contact portion; 262, pinhole portion; 27, female contact end; 271, second fixing groove. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-8 This application is described in further detail.

[0031] In the description of the invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the invention.

[0032] The embodiment of the present application discloses a waterproof circular connector, comprising a male plug 10 and a female plug 20, wherein the male plug 10 comprises a male housing 1, and the female plug 20 comprises a female housing 2. The male housing 1 comprises a male end 13, and a socket 131 is provided at the end of the male end 13. The male end 13 is cylindrical, and the inner wall of the socket 131 is designed to have a smooth surface to avoid scratching the docking parts. A positioning pin 132 is provided protrudingly in the socket 131. The positioning pin 132 in the socket 131 adopts a T-shaped structure to enhance stability. Other shapes such as a cross or a ball head rod can also be used to increase the guiding accuracy. The female housing 2 comprises a female end 25, and a pin hole 251 is recessed at the end of the female end 25. The female end 25 is designed to be circular to match the size of the male end 13. The position of the pin hole 251 precisely matches the positioning pin 132 of the male end 13. The two are precisely processed to ensure the matching accuracy. The outer side of the female end 25 is sleeved and fixed with a first dustproof sealing ring 22. The first dustproof sealing ring 22 is made of a rubber elastic material and has good compression and rebound properties, which can effectively prevent external contaminants from entering the connection area. The outer wall of the female end 25 is provided with a sealing ring groove 253, and the second dustproof sealing ring 23 is installed in the sealing ring groove 253 to ensure that the second dustproof sealing ring 23 is firmly embedded and not easy to fall off. The outer side of the male housing 1 is fixedly provided with a fixing nut 15, and one side of the fixing nut 15 is fixedly provided with an outer sealing ring 16; when the female end 25 is fully inserted into the socket 131, the positioning pin 132 is correspondingly inserted into the pin hole 251, the second dustproof sealing ring 23 extends into the socket 131 and contacts the inner wall of the socket 131, and the end of the male end 13 abuts against the first dustproof sealing ring 22, thereby achieving a good sealing effect. The sealing of the male end 13 is completed by plugging, which simplifies the sealing steps and improves assembly efficiency. Since the sealing is performed by abutting the end of the male end 13 with the first dustproof sealing ring 22 , the socket 131 can also be replaced with a form with a guiding slope to facilitate the insertion operation.

[0033] Referring to the figures, the male housing 1 further includes a male contact end 12 having a first fixing slot 121 defined therein, and the female housing 2 further includes a female contact end 27 having a second fixing slot 271 defined therein. The first electrical contact 14 further includes a first contact portion 141 extending from the first fixing slot 121 to the exterior of the male contact end 12, and the second electrical contact 26 further includes a second contact portion 261 extending from the second fixing slot 271 to the exterior of the female contact end 27. The arrangement of the male contact end 12 and the female contact end 27 facilitates connection of the connector to their respective corresponding wires.

[0034] A first electrical contact 14 is fixedly disposed within the male housing 1, and a plurality of second electrical contacts 26 are fixedly disposed within the female housing 2. The first electrical contact 14 includes a pin portion 142 extending into the socket 131. The female housing 2 includes a plurality of second electrical contacts 26, each of which includes a pinhole portion 262. The female socket end 25 is also provided with a plurality of pinholes 252, each of which is fixedly disposed within the pinholes 252. When the locating pin 132 is inserted into the pinhole 251, the pin portion 142 correspondingly inserts into the pinhole portion 262, thereby establishing a stable electrical connection path. To ensure that the connector has extremely low resistivity and excellent oxidation resistance suitable for high-frequency signal transmission applications, in the embodiment of the present application, the first electrical contact 14 and the second electrical contact 26 are made of gold-plated copper rods, which improves the data transmission stability and reliability of the connector.

[0035] A dust cover 21 is movably mounted on the exterior of the female housing 2. A snap-on protrusion 24 protrudes from the exterior of the female housing 2. A snap-on portion 212 is provided on the dust cover 21. A first dust seal 22 and the snap-on protrusion 24 limit the snap-on portion 212, restricting the range of motion of the dust cover 21. The dust cover 21 has internal threads 211, while the male housing 1 has external threads 11. The dust cover 21 is threadably secured to the male housing 1, providing dual protection. The dust cover 21 and its threaded locking mechanism enhance the connector's dustproof performance when not in use.

[0036] The fixed nut 15 is designed to facilitate cooperation with the movable nut 17, allowing the movable nut 17 and the fixed nut 15 to squeeze the outer sealing ring 16. Since the outer sealing ring 16 is located outside the connector, the waterproof performance of the outer sealing ring 16 is improved. The side of the fixed nut 15 facing the outer sealing ring 16 is configured as a flat surface, which protects the outer sealing ring 16 from damage during squeezing. Furthermore, when using an outer sealing ring 16 with better waterproof performance, squeezing is unnecessary. Therefore, the fixed nut 15 can also be provided with a protruding stopper 151 on the side facing the outer sealing ring 16. This configuration allows the movable nut 17 to form an abutment structure with the movable nut 17 when tightened close to the fixed nut 15, thereby protecting the outer sealing ring 16. To enhance the connection stability between the connector and the wire, a positioning hole 152 can also be provided in the fixed nut 15.

[0037] A manufacturing process for a waterproof circular connector, for preparing a waterproof circular connector, comprises the following steps: Step 1: Place the first electrical contact 14 and the second electrical contact 26 in an injection mold, and wrap the outer surfaces of the first electrical contact 14 and the second electrical contact 26 with a protective layer; Step 2: Pre-place the first electrical contact 14 and the second electrical contact 26 with the protective layer into the injection mold again, and integrally mold the male housing 1 and the female housing 2 onto the outside of the first electrical contact 14 and the second electrical contact 26; The fixing nut 15 is made by injection molding, and is sleeved on the outside of the male housing 1. The end of the fixing nut 15 is deformed by hot pressing, so that the fixing nut 15 is riveted to the male housing 1. Step 3: Use hot stamping to press out the snap-fit ​​protrusion 24 and the sealing ring groove 253 on the surface of the female shell 2, and print the logo symbol on the surface of the snap-fit ​​protrusion 24. The dust cover 21 is made by injection molding. The dust cover 21 is installed on the female shell 2, and then the first dustproof sealing ring 22, the second dustproof sealing ring 23 and the outer sealing ring 16 are installed respectively, and then the threads are opened.

[0038] In step 2, after the male housing 1 and the female housing 2 are injection-molded with the first electrical contact 14 and the second electrical contact 26 , glue is dispensed in the first fixing groove 121 and the second fixing groove 271 .

[0039] Through the coordinated cooperation of multiple steps, the quality reliability and production consistency of waterproof circular connectors are ensured.

[0040] The implementation principle of the embodiment of the present application is: by rationally arranging the relative position relationship between the male plug 10 and the female plug 20 and rationally arranging the sealing ring, a relatively simple structure can be provided during actual use. On the basis of this structure, the two-half interface assembly operation can be completed quickly and accurately while also having excellent anti-leakage, waterproof, moisture-proof and dust-proof performance.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A waterproof circular connector, characterized by: The invention comprises a male plug (10) and a female plug (20), wherein the male plug (10) comprises a male shell (1), the female plug (20) comprises a female shell (2), the male shell (1) comprises a male support end (13), the end of the male support end (13) is provided with a socket (131), and a positioning pin (132) is convexly provided in the socket (131); the female shell (2) comprises a female support end (25), the end of the female support end (25) is concavely provided with a pin hole (251), the outer side of the female support end (25) is sleeved and fixed with a first dustproof sealing ring (22), and the outer side wall of the female support end (25) is also provided with a A sealing ring groove (253) is provided, and a second dustproof sealing ring (23) is installed in the sealing ring groove (253); a fixing nut (15) is fixedly provided on the outer side of the male housing (1), and an outer sealing ring (16) is fixedly provided on one side of the fixing nut (15); when the female bearing end (25) is fully inserted into the socket (131), the positioning pin (132) is correspondingly inserted into the pin hole (251), the second dustproof sealing ring (23) extends into the socket (131) and contacts the inner wall of the socket (131), and the end of the male bearing end (13) abuts against the first dustproof sealing ring (22).

2. The waterproof circular connector according to claim 1, characterized in that: A first electrical contact (14) is fixedly provided in the male housing (1), and a plurality of second electrical contacts (26) are fixedly provided in the female housing (2). The first electrical contact (14) includes a pin portion (142) extending into the socket (131). The female housing (2) includes a plurality of second electrical contacts (26). The second electrical contacts (26) include a pinhole portion (262). The female socket end (25) is further provided with a plurality of pinholes (252). The pinhole portion (262) is fixedly provided in the pinhole (252). When the positioning pin (132) is inserted into the pin hole (251), the pin portion (142) is correspondingly inserted into the pinhole portion (262).

3. The waterproof circular connector according to claim 1, characterized in that: The outer portion of the female shell (2) is movably sleeved with a dust cover (21), the outer side of the female shell (2) is also provided with a snap-fitting protrusion (24), the dust cover (21) is provided with a snap-fitting portion (212), the first dustproof sealing ring (22) and the snap-fitting protrusion (24) jointly limit the snap-fitting portion (212), thereby limiting the range of movement of the dust cover (21).

4. The waterproof circular connector according to claim 3, characterized in that: The dust cover (21) is provided with an internal thread (211) and the surface of the male housing (1) is provided with an external thread (11). The dust cover (21) is threadedly fixed to the male housing (1).

5. The waterproof circular connector according to claim 1, characterized in that: The side of the fixing nut (15) facing the outer sealing ring (16) is configured as a flat surface.

6. The waterproof circular connector according to claim 1, characterized in that: A limiting protrusion (151) is provided on one side of the fixing nut (15) facing the outer sealing ring (16).

7. The waterproof circular connector according to claim 1, characterized in that: The positioning pin (132) is configured as a T-shaped pin.

8. The waterproof circular connector according to claim 2, characterized in that: The male housing (1) further comprises a male contact end (12), the male contact end (12) being provided with a first fixing groove (121); the female housing (2) further comprises a female contact end (27), the female contact end (27) being provided with a second fixing groove (271); the first electrical contact (14) further comprises a first contact portion (141), the first contact portion (141) extending from the first fixing groove (121) to the outside of the male contact end (12); the second electrical contact (26) further comprises a second contact portion (261), the second contact portion (261) extending from the second fixing groove (271) to the outside of the female contact end (27).

9. A manufacturing process for a waterproof circular connector, for preparing the waterproof circular connector according to any one of claims 1 to 8, characterized in that The steps include: Step 1: placing the first electrical contact (14) and the second electrical contact (26) in an injection mold, and wrapping the outer surfaces of the first electrical contact (14) and the second electrical contact (26) with a protective layer; Step 2: pre-place the first electrical contact (14) and the second electrical contact (26) with the protective layer into the injection mold again, and integrally mold the male housing (1) and the female housing (2) outside the first electrical contact (14) and the second electrical contact (26); The fixing nut (15) is made by injection molding, and the fixing nut (15) is sleeved on the outside of the male housing (1). The end of the fixing nut (15) is deformed by hot pressing, so that the fixing nut (15) is riveted to the male housing (1); Step 3: The surface of the female housing (2) is pressed out with a snap-fit ​​protrusion (24) and a sealing ring groove (253) by hot stamping, and a logo symbol is printed on the surface of the snap-fit ​​protrusion (24). The dust cover (21) is made by injection molding, and the dust cover (21) is installed on the female housing (2). Then, the first dustproof sealing ring (22), the second dustproof sealing ring (23) and the outer sealing ring (16) are installed respectively, and then threads are opened.

10. The manufacturing process of a waterproof circular connector according to claim 9, characterized in that: In step 2, the male housing (1) and the female housing (2) are injection-molded with the first electrical contact (14) and the second electrical contact (26), and then glue is dispensed in the first fixing groove (121) and the second fixing groove (271).

Images