Mass-production rapid injection molding type underwater connector assembly and manufacturing method thereof

Abstract

The invention discloses an underwater communication technology, and aims to provide a mass-production rapid injection molding type underwater connector assembly and a manufacturing method thereof, the main points of the technical scheme are that the connector assembly comprises a connector assembly body, the connector assembly body comprises a male pin, a female pin and a male pin, the electric contact pin part is used for being connected with the electric contact hole part of the female contact pin; the pin part of the female pin is used for being welded with the other end of the cable, and the electric contact hole part is used for being connected with the electric contact needle part of the male pin; the plug shell is formed through injection molding, fixes and wraps the welding part of the cable and the male pin, and is used for being assembled with the socket shell; the socket shell is formed through injection molding, fixes and wraps the welding part of the cable and the female pin, and is used for being assembled with the plug shell; the screw sleeve sleeves the plug shell and is used for fixedly connecting the plug shell with the socket shell; the method is suitable for the technical field of underwater communication.

Description

Technical Field

[0001] The present invention relates to an underwater communication technology, and more specifically, to a mass-produced rapid injection-molding underwater connector assembly and a manufacturing method thereof. Background Art

[0002] With the development of marine engineering, deep-sea exploration, marine equipment and other fields, underwater connectors play a vital role in the electrical connection and signal transmission between equipment. Injection-molded underwater connectors are an ideal choice for underwater applications due to their excellent sealing, corrosion resistance and low cost. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a mass-produced rapid injection molding underwater connector assembly and a manufacturing method thereof.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a mass-produced rapid injection molding underwater connector assembly, comprising a connector assembly body, the connector assembly body comprising: Male pin: The pin part is used to be welded with one end of the cable, and the electrical contact pin part is used to connect with the electrical contact hole part of the female pin; Female pin: The pin part is used to be welded with the other end of the cable, and the electrical contact hole part is used to connect with the electrical contact pin part of the male pin; Plug housing: Made by injection molding and fixedly wraps the welding part of the cable and the male pin, used for assembly with the socket housing; Socket housing: Made by injection molding and fixedly wraps the welding part of the cable and the female pin, used for assembly with the plug housing; Screw sleeve: It is sleeved on the plug housing and is used to fix the plug housing and the socket housing.

[0005] The present invention is further configured as follows: the plug housing formed by injection molding is in the form of a stepped axis as a whole, and the plug housing is respectively a first stepped axis, a second stepped axis, a third stepped axis and a fourth stepped axis from left to right, the welding portion of the cable and the male pin is located in the first stepped axis, and the electrical contact pin portion of the male pin is located in the fourth stepped axis, and the end surface of the fourth stepped axis is provided with a connecting hole corresponding to the electrical contact pin portion of the male pin for connecting the female pin with the male pin; The socket housing formed by injection molding is in a convex shape as a whole. The socket housing has a step shaft 1 and a step shaft 2 from left to right, and the step shaft 1 is provided with an external thread. The inside thereof has a step hole 1 and a step hole 2 from left to right. The welding part of the cable and the female pin is located in the step shaft 2, and the electrical contact hole of the female pin is partially exposed in the step hole 2. The screw sleeve is formed by injection molding and is in a concave shape as a whole. An internal thread matching the external thread is arranged on the inner circumferential surface of the screw sleeve, and a hole matching the first step shaft is coaxially arranged on the end surface of the screw sleeve.

[0006] The present invention is further configured as follows: the diameter of the second step shaft>the diameter of the third step shaft>the diameter of the first step shaft>the diameter of the fourth step shaft; the diameter of the step shaft one>the diameter of the step shaft two; the diameter of the step hole one>the diameter of the step hole two; The diameter of the fourth step shaft matches the diameter of the second step hole, the diameter of the third step shaft matches the diameter of the first step hole, and the diameter of the second step shaft is smaller than the diameter of the first step shaft.

[0007] A method for manufacturing a mass-produced rapid injection molding underwater connector assembly, characterized in that it comprises the following steps: S1. Prepare the required materials, including plastic granules, male pins and female pins for injection molding; S2, making a screw sleeve, molding the screw sleeve through an injection molding process, and processing an internal thread; S3. Solder one end of the cable to the pin of the male pin to ensure good welding quality; S4, insert the threaded connection end of the screw sleeve from the male pin electrical contact needle part to the outside, so that the screw sleeve is sleeved on the cable and away from the welding part, then put the welded cable and the male pin into the mold of the plug housing for injection molding to form the plug housing, and ensure that the plug housing fixes the cable and the male pin, and at the same time, the welding part is located in the plug housing, so that the connecting hole on the fourth step axis of the plug housing corresponds to the electrical contact needle part of the male pin; S5. Solder the other end of the cable to the pin of the female pin to ensure good welding quality; S6. Place the welded cable and female pin into a mold of a socket housing for injection molding to form a socket housing, and ensure that the socket housing fixes the cable and the female pin, and at the same time, the welding part is located inside the socket housing, so that the electrical contact hole of the female pin is partially exposed in the step hole; S7, processing an external thread on the outer circumferential surface of the socket housing to match the internal thread of the screw sleeve for easy connection; S8. Assemble the plug housing and the socket housing together, insert the plug housing into the socket housing, so that the fourth step shaft is connected to the step hole 2, the third step shaft is connected to the step hole 1, and the right end face of the second step shaft is in contact with the end face of the step shaft 1, and at the same time, ensure that the electrical contact hole portion of the female pin is inserted along the connecting hole and connected with the electrical contact pin portion of the male pin; S9, insert the screw sleeve along the first step shaft of the plug housing, and fix it with a thread on the step shaft of the socket housing until the inner end surface of the screw sleeve contacts the left end surface of the second step shaft.

[0008] The present invention is further configured as follows: in S1, the material of the plastic particles is a corrosion-resistant polymer material to adapt to the use requirements of underwater environments.

[0009] The present invention is further configured as follows: the welding in S3 and S5 adopts a common welding method to improve welding efficiency and connection strength.

[0010] The present invention is further configured as follows: the manufacturing method further comprises the following inspection steps: Step 1: After welding is completed, use X-ray or ultrasonic testing methods to perform non-destructive testing on the trace part; Step 2: After the injection molding is completed, use the measuring tool to measure the screw sleeve, plug housing and socket housing to ensure the matching degree of each part; Step 3: After all the assemblies are completed, conduct a water tightness test to ensure water tightness and pressure resistance.

[0011] The beneficial effects of the present invention are: 1. Compared with the prior art, the mass-produced rapid injection molding underwater connector assembly of the present invention achieves effective electrical connection by adopting the structural design of male pins and female pins. The design of the male pins and female pins enables the assembly to achieve good electrical contact in an underwater environment, ensuring the reliability of signal transmission. At the same time, the plug housing and the socket housing are manufactured through the injection molding process, which enhances the mechanical strength and water resistance of the assembly. This design not only improves the service life of the connector, but also effectively prevents the intrusion of moisture, thereby avoiding electrical short circuits or failures. The addition of the screw sleeve provides an additional fixing effect, so that the connector can maintain stability in a dynamic environment. In addition, the injection molding process has the advantage of being able to be produced in large quantities and at a low cost. This efficient structural design enables the connector assembly to be widely used in underwater electronic equipment.

[0012] 2. The step design of the plug shell and the socket shell of the mass-produced rapid injection molding underwater connector assembly of the present invention not only provides a stable structure, but also ensures the accuracy of insertion through a clear shape. In particular, the step shaft design of the plug shell can effectively guide the docking of the female pin and the male pin, reducing errors during the assembly process. This design improves the reliability of the connection and makes the overall assembly process simpler and more efficient. The convex shape of the socket shell and the setting of the step hole further enhance the fixation and avoid loose connection due to vibration or impact during use. In addition, the easy positioning feature of the design improves production efficiency, reduces the complexity of manual operation, and is suitable for large-scale mass production. Through the optimized spatial layout, the connector assembly can better adapt to the underwater working environment and exhibit excellent pressure resistance and corrosion resistance.

[0013] 3. In the present invention, the manufacturing method steps provide a systematic process for the production of mass-produced rapid injection molding underwater connector components. Through precise preparation of materials and standardized operation of each step, the quality and consistency of the product can be ensured. Especially in the welding process, the use of ordinary welding not only improves the welding efficiency, but also enhances the strength of the connection.

[0014] 4. The present invention has a simple and reasonable structure, a manufacturing method, and is easy to operate, avoiding the defects of the prior art and is suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present invention.

[0016] Figure 2 It is a structural diagram of the plug housing of the present invention.

[0017] Figure 3 It is a structural diagram of the socket housing of the present invention.

[0018] Figure 1-3 Figure numerals: 1. male pin; 2. female pin; 3. plug housing; 4. socket housing; 5. screw sleeve; 6. first step shaft; 7. second step shaft; 8. third step shaft; 9. fourth step shaft; 10. connecting hole; 11. step shaft one; 12. step shaft two; 13. step hole one; 14. step hole two. DETAILED DESCRIPTION

[0019] Reference Figure 1-3 The mass-produced rapid injection molding underwater connector assembly and the manufacturing method thereof are further described in an embodiment of the present invention.

[0020] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0021] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0022] Figures 1 to 3A mass-produced rapid injection-molding underwater connector assembly is shown, comprising a connector assembly body, the connector assembly body comprising: Male pin 1: The pin part is used to be welded with one end of the cable, and the electrical contact pin part is used to connect with the electrical contact hole part of the female pin 2; Female pin 2: The pin part is used for welding with the other end of the cable, and the electrical contact hole part is used for connecting with the electrical contact pin part of the male pin 1; Plug housing 3: Made by injection molding and fixedly wrapping the welding part of the cable and the male pin 1, used for assembly with the socket housing 4; Socket housing 4: It is made by injection molding and fixes and wraps the welding part of the cable and the female pin 2, and is used for assembly with the plug housing 3; The screw sleeve 5 is sleeved on the plug housing 3 and is used to fix the plug housing 3 and the socket housing 4 together; Compared with the prior art, the mass-produced rapid injection molding underwater connector assembly of the present invention achieves effective electrical connection by adopting the structural design of the male pin 1 and the female pin 2. The design of the male pin 1 and the female pin 2 enables the assembly to achieve good electrical contact in an underwater environment, ensuring the reliability of signal transmission. At the same time, the plug housing 3 and the socket housing 4 are manufactured through the injection molding process, which enhances the mechanical strength and water resistance of the assembly. This design not only improves the service life of the connector, but also effectively prevents the intrusion of moisture, thereby avoiding electrical short circuits or failures. The addition of the screw sleeve 5 provides an additional fixing effect, so that the connector can maintain stability in a dynamic environment. In addition, the advantage of the injection molding process is that it can be produced in large quantities and at a low cost. This efficient structural design enables the connector assembly to be widely used in underwater electronic equipment.

[0023] The plug housing 3 formed by injection molding is in the form of a stepped axis as a whole. The plug housing 3 is respectively a first stepped axis 6, a second stepped axis 7, a third stepped axis 8 and a fourth stepped axis 9 from left to right. The welding part of the cable and the male pin 1 is located in the first stepped axis 6, and the electrical contact needle part of the male pin 1 is located in the fourth stepped axis 9. The end surface of the fourth stepped axis 9 is provided with a connecting hole 10 corresponding to the electrical contact needle part of the male pin 1 for connecting the female pin 2 with the male pin 1; The socket housing 4 formed by injection molding is in a convex shape as a whole. The socket housing 4 has a step shaft 11 and a step shaft 2 12 from left to right, and the step shaft 11 is provided with an external thread. The inside thereof has a step hole 13 and a step hole 2 14 from left to right. The welding part of the cable and the female pin 2 is located in the step shaft 2 12, and the electrical contact hole of the female pin 2 is partially exposed in the step hole 2 14. The screw sleeve 5 is formed by injection molding and is in a concave shape as a whole. An internal thread matching the external thread is arranged on the inner circumferential surface of the screw sleeve 5. A hole matching the first stepped shaft 6 is coaxially arranged on the end surface of the screw sleeve 5. The step design of the plug housing 3 and the socket housing 4 of the mass-produced rapid injection molding underwater connector assembly of the present invention not only provides a stable structure, but also ensures the accuracy of insertion through a clear shape. In particular, the step shaft design of the plug housing 3 can effectively guide the docking of the female pin 2 and the male pin 1, reducing errors during the assembly process. This design improves the reliability of the connection and makes the overall assembly process simpler and more efficient. The convex shape of the socket housing 4 and the setting of the step hole further enhance the fixation and avoid loose connection due to vibration or impact during use. In addition, the easy positioning feature of the design improves production efficiency, reduces the complexity of manual operation, and is suitable for large-scale mass production. Through the optimized spatial layout, the connector assembly can better adapt to the underwater working environment and exhibit excellent pressure resistance and corrosion resistance.

[0024] The diameter of the second step shaft 7 is greater than the diameter of the third step shaft 8, greater than the diameter of the first step shaft 6, and greater than the diameter of the fourth step shaft 9; the diameter of the step shaft 1 11 is greater than the diameter of the step shaft 2 12; the diameter of the step hole 1 13 is greater than the diameter of the step hole 2 14; The diameter of the fourth step shaft 9 matches the diameter of the second step hole 14, the diameter of the third step shaft 8 matches the diameter of the first step hole 13, and the diameter of the second step shaft 7 is smaller than the diameter of the first step shaft 11; This design effectively ensures the tightness of the fit between the various parts, making the entire connector more stable and durable when subjected to external pressure. The different diameter designs of the step shafts not only help to enhance the tensile strength of the connection, but also enable tighter electrical contact, thereby improving the efficiency and stability of electrical signal transmission. This structure can effectively reduce loose connections or failures caused by temperature changes or environmental changes, thereby ensuring reliable working conditions in harsh underwater environments. In addition, the specific diameter fit relationship enables the manufacturing process to be standardized, further reducing production costs, improving production efficiency, and promoting the widespread application of underwater connectors.

[0025] A method for manufacturing a mass-produced rapid injection molding underwater connector assembly, characterized in that it comprises the following steps: S1. Prepare the required materials, including plastic particles for injection molding, male pin 1 and female pin 2; S2, making the screw sleeve 5, molding the screw sleeve 5 through an injection molding process, and processing an internal thread; S3. Solder one end of the cable to the pin portion of the male pin 1 to ensure good welding quality; S4, insert the threaded end of the screw sleeve 5 from the electrical contact pin part of the male pin 1 with the threaded connection end facing outward, so that the screw sleeve 5 is sleeved on the cable and away from the welding part, and then put the welded cable and the male pin 1 into the mold of the plug housing 3 for injection molding to form the plug housing 3, and ensure that the plug housing 3 fixes the cable and the male pin 1, and at the same time make the welding part located in the plug housing 3, so that the connecting hole 10 on the fourth step shaft 9 of the plug housing 3 corresponds to the electrical contact pin part of the male pin 1; S5. Solder the other end of the cable to the pin portion of the female pin 2 to ensure good welding quality; S6, placing the welded cable and female pin 2 into the mold of the socket housing 4 for injection molding to form the socket housing 4, and ensuring that the socket housing 4 fixes the cable and the female pin 2, and at the same time, the welding part is located in the socket housing 4, so that the electrical contact hole of the female pin 2 is partially exposed in the step hole; S7, processing an external thread on the outer circumferential surface of the socket housing 4 to match the internal thread of the screw sleeve 5 for easy connection; S8, assemble the plug housing 3 and the socket housing 4, insert the plug housing 3 into the socket housing 4, so that the fourth step shaft 9 is connected to the step hole 2 14, the third step shaft 8 is connected to the step hole 13, the right end face of the second step shaft 7 is in contact with the end face of the step shaft 11, and at the same time, ensure that the electrical contact hole portion of the female pin 2 is inserted along the connecting hole 10 and connected with the electrical contact pin portion of the male pin 1; S9, insert the screw sleeve 5 along the first step shaft 6 of the plug housing 3, and thread and fix it on the step shaft 11 of the socket housing 4 until the inner end surface of the screw sleeve 5 contacts the left end surface of the second step shaft 7; In the present invention, the manufacturing method steps provide a systematic process for the production of mass-produced rapid injection molding underwater connector components. Through precise preparation of materials and standardized operation of each step, the quality and consistency of the product can be ensured. Especially in the welding process, the use of ordinary welding not only improves the welding efficiency, but also enhances the strength of the connection.

[0026] In S1, the material of the plastic particles is a corrosion-resistant polymer material to meet the use requirements of underwater environment; The corrosion-resistant polymer materials used can effectively cope with the challenges of underwater environments. The choice of this material not only improves the durability of the connector, but also ensures that it is not prone to aging or deformation during long-term underwater use, thereby extending the service life of the product. At the same time, the use of corrosion-resistant materials improves the safety of the connector and reduces the risk of electrical failure due to material degradation. This application provides better protection for the connector, can adapt to the chemical properties and temperature changes of different waters, and ensures that it still maintains good performance in various environments.

[0027] The welding in S3 and S5 adopts the common welding method to improve the welding efficiency and connection strength; This approach not only speeds up production, but also ensures higher connection strength at the welding site, thereby improving the reliability of the entire connector.

[0028] The manufacturing method also includes the following inspection steps: Step 1: After welding is completed, use X-ray or ultrasonic testing methods to perform non-destructive testing on the trace part; Step 2: After the injection molding is completed, use a measuring tool to measure the screw sleeve 5, the plug housing 3 and the socket housing 4 to ensure the matching degree of each part; Step 3: After all the assemblies are completed, conduct a water tightness test to ensure water tightness and pressure resistance; The added inspection steps ensure the quality control of mass-produced rapid injection molding underwater connector components after production. These inspection methods, such as X-ray and ultrasonic testing, can effectively detect defects in welding parts and ensure that each connector meets the design requirements and quality standards before leaving the factory. In addition, precise measurements after injection molding ensure good fit between components and reduce assembly problems caused by dimensional incompatibility. Finally, the introduction of watertightness testing ensures that the connector can work safely in underwater environments and has good pressure resistance.

[0029] The invention has a simple and reasonable structure, a manufacturing method, and is easy to operate, avoids the defects in the prior art, and is suitable for popularization and implementation.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A mass-produced rapid injection molding underwater connector assembly, Features: The invention comprises a connector assembly body, the connector assembly body comprising: Male pin (1): the pin portion is used for welding with one end of the cable, and the electrical contact pin portion is used for connecting with the electrical contact hole portion of the female pin (2); Female pin (2): the pin portion is used for welding with the other end of the cable, and the electrical contact hole portion is used for connecting with the electrical contact pin portion of the male pin (1); Plug housing (3): formed by injection molding and fixedly wrapping the welding part of the cable and the male pin (1), and used for assembly with the socket housing (4); The socket housing (4) is formed by injection molding and fixes and wraps the welding part of the cable and the female pin (2) for assembly with the plug housing (3); The screw sleeve (5) is sleeved on the plug housing (3) and is used to fix the plug housing (3) and the socket housing (4) in connection.

2. A mass-produced rapid injection molding underwater connector assembly according to claim 1, It is characterized in that The plug housing (3) formed by injection molding is in the form of a stepped shaft as a whole. The plug housing (3) comprises, from left to right, a first stepped shaft (6), a second stepped shaft (7), a third stepped shaft (8) and a fourth stepped shaft (9). The welding portion of the cable and the male pin (1) is located in the first stepped shaft (6), and the electrical contact pin portion of the male pin (1) is located in the fourth stepped shaft (9). The end surface of the fourth stepped shaft (9) is provided with a connecting hole (10) corresponding to the electrical contact pin portion of the male pin (1) for connecting the female pin (2) with the male pin (1); The socket housing (4) formed by injection molding is in a convex shape as a whole. The socket housing (4) comprises a step shaft 1 (11) and a step shaft 2 (12) from left to right, and the step shaft 1 (11) is provided with an external thread. The inside thereof comprises a step hole 1 (13) and a step hole 2 (14) from left to right. The welding part of the cable and the female plug pin (2) is located in the step shaft 2 (12), and the electrical contact hole of the female plug pin (2) is partially exposed in the step hole 2 (14); The screw sleeve (5) is formed by injection molding and is in a concave shape as a whole. An internal thread matching the external thread is arranged on the inner circumferential surface of the screw sleeve (5). A hole matching the first stepped shaft (6) is coaxially arranged on the end surface of the screw sleeve (5).

3. A mass-produced rapid injection molding underwater connector assembly according to claim 2, It is characterized in that The diameter of the second step shaft (7) is greater than the diameter of the third step shaft (8) and greater than the diameter of the first step shaft (6) and greater than the diameter of the fourth step shaft (9); the diameter of the first step shaft (11) is greater than the diameter of the second step shaft (12); the diameter of the first step hole (13) is greater than the diameter of the second step hole (14); The diameter of the fourth step shaft (9) matches the diameter of the second step hole (14), the diameter of the third step shaft (8) matches the diameter of the first step hole (13), and the diameter of the second step shaft (7) is smaller than the diameter of the first step shaft (11).

4. A method for manufacturing a mass-produced rapid injection molding underwater connector assembly according to any one of claims 1 to 3, It is characterized in that The following steps are involved: S1. Prepare the required materials, including plastic particles for injection molding, male pins (1) and female pins (2); S2, manufacturing the screw sleeve (5), molding the screw sleeve (5) by injection molding, and processing the internal thread; S3. Solder one end of the cable to the pin portion of the male pin (1), ensuring good welding quality; S4. Insert the threaded connection end of the screw sleeve (5) from the electrical contact pin part of the male pin (1) with the threaded connection end facing outward, so that the screw sleeve (5) is sleeved on the cable and away from the welding part, and then put the welded cable and the male pin (1) into the mold of the plug housing (3) for injection molding to form the plug housing (3), and ensure that the plug housing (3) fixes the cable and the male pin (1) in connection, and at the same time, the welding part is located in the plug housing (3), so that the connecting hole (10) on the fourth step shaft (9) of the plug housing (3) corresponds to the electrical contact pin part of the male pin (1); S5. Solder the other end of the cable to the pin portion of the female pin (2), ensuring good welding quality; S6. Place the welded cable and female pin (2) into a mold of a socket housing (4) for injection molding to form the socket housing (4), and ensure that the socket housing (4) securely connects the cable and the female pin (2), and at the same time, the welding part is located inside the socket housing (4), so that the electrical contact hole of the female pin (2) is partially exposed in the step hole; S7, processing an external thread on the outer circumferential surface of the socket housing (4) to match the internal thread of the screw sleeve (5) for easy connection; S8. Assemble the plug housing (3) and the socket housing (4) together, insert the plug housing (3) into the socket housing (4), so that the fourth step shaft (9) is connected to the step hole 2 (14), the third step shaft (8) is connected to the step hole 1 (13), the right end face of the second step shaft (7) is in contact with the end face of the step shaft 1 (11), and at the same time, ensure that the electrical contact hole portion of the female pin (2) is inserted along the connecting hole (10) and connected to the electrical contact pin portion of the male pin (1); S9. Insert the screw sleeve (5) along the first stepped shaft (6) of the plug housing (3) and threadably connect it to the stepped shaft (11) of the socket housing (4) until the inner end surface of the screw sleeve (5) contacts the left end surface of the second stepped shaft (7).

5. The method for manufacturing a mass-produced rapid injection molding underwater connector assembly according to claim 4, It is characterized in that In S1, the material of the plastic particles is a corrosion-resistant polymer material to meet the use requirements of underwater environment.

6. The method for manufacturing a mass-produced rapid injection molding underwater connector assembly according to claim 4, It is characterized in that The welding in S3 and S5 adopts a common welding method to improve welding efficiency and connection strength.

7. The method for manufacturing a mass-produced rapid injection molding underwater connector assembly according to claim 4, It is characterized in that The manufacturing method also includes the following inspection steps: Step 1: After welding is completed, use X-ray or ultrasonic testing methods to perform non-destructive testing on the trace part; Step 2: After the injection molding is completed, use a measuring tool to measure the screw sleeve (5), the plug housing (3) and the socket housing (4) to ensure the matching degree of each part; Step 3: After all the assemblies are completed, conduct a water tightness test to ensure water tightness and pressure resistance.

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