Process for forming a waterproof ring of a waterproof type c female socket

CN122253379APending Publication Date: 2026-06-23DONGGUAN YTCONN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGGUAN YTCONN TECH CO LTD
Filing Date
2026-05-14
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In the prior art, the TYPE-C female connector structure with an annular protrusion at the top of the shell and no supporting platform at the front outer edge is difficult to stably install a waterproof ring, resulting in unstable manufacturing process and high defect rate.

Method used

The molding method involves injecting liquid silicone into the groove of the TYPE-C shell using a dispensing machine. The core and template in the mold form a waterproof ring, ensuring a tight bond between the waterproof ring and the shell and preventing it from falling off.

Benefits of technology

This technology enables the stable formation of a waterproof ring on a TYPE-C female connector with an annular protrusion at the top of the outer shell and no support platform at the front, improving process stability and mass production capabilities while reducing the defect rate.

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Abstract

This invention provides a process for forming a waterproof ring on a waterproof TYPE C female connector, comprising the following steps: shell preparation, mold preparation, shell feeding, glue dispensing, silicone curing, and product unloading. First, the TYPE C shell is inverted and assembled onto the positioning end, ensuring the location where the waterproof ring needs to be installed is within the mold groove. Then, liquid silicone is injected into the groove using a glue dispensing machine. After the silicone in the groove cures, a waterproof ring is formed on the TYPE C shell. This method is suitable for shell structures with annular protrusions at the top and no supporting platform at the front edge, effectively solving the problem of difficulty in installing waterproof rings on such shell structures. It has the advantages of simple process, stable manufacturing, and good mass production capability.
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Description

Technical Field

[0001] This invention relates to the field of TYPE-C technology, and more particularly to a process for forming a waterproof ring for a waterproof TYPE-C female connector. Background Technology

[0002] The TYPE-C female connector is the socket part of the USB Type-C interface standard. It is usually fixed on electronic devices and supports reversible insertion, high-speed data transmission, high-power charging, and video signal output. As a universal interface for modern electronic devices, it is widely used in smartphones, laptops, tablets, and industrial control applications.

[0003] To improve the seal between the TYPE-C female connector's housing and the equipment mounting port, a waterproof ring is typically installed on the housing. TYPE-C female connector housings have several structures. The first structure lacks an annular protrusion at the top, but has a support platform along the front outer edge. In this structure, the waterproof ring can be formed on the support platform by applying adhesive from the top side of the housing. The second structure has an annular protrusion at the top and a support platform along the front outer edge, forming an annular groove. In this structure, a pre-made waterproof ring can be directly assembled into the annular groove. The third structure is shown in the attached diagram. Figure 3 The TYPE C female connector shown has an annular protrusion at the top of its outer shell, requiring a waterproof ring to be installed behind the annular protrusion. For the third structure, because the front of the outer shell has an annular protrusion and there is no supporting platform on the shell, the annular protrusion obstructs the dispensing of adhesive, making it impossible to form the waterproof ring by dispensing adhesive from the front of the shell. The only option is to directly assemble the waterproof ring onto the shell. However, directly assembling the waterproof ring onto the shell presents problems of process instability and a high defect rate. For this type of shell structure, a better method for installing the waterproof ring is needed. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a waterproof ring forming process for a waterproof TYPE C female connector, which is applicable to shell structures with annular protrusions at the top of the shell and no support platform at the outer edge of the front end of the shell, thus solving the problem that it is difficult to install a waterproof ring on such shell structures.

[0005] To solve the above technical problems, a waterproof ring forming process for a waterproof TYPE C female connector provided by this invention is adopted, which includes the following steps:

[0006] S1. Shell preparation: Prepare the TYPE C shell that needs to form a waterproof ring. The TYPE C shell includes a ring-shaped body and a ring-shaped protrusion at one end of the ring-shaped body.

[0007] S2. Mold preparation: Prepare a mold for forming a waterproof ring on the TYPE C shell. The mold includes a mold base, a template set on the top of the mold base, and a mold core. The mold core includes a connecting post and a positioning end connected to the top of the connecting post and matching the inner ring of the TYPE C shell. The top of the template is provided with several grooves that match the shape of the waterproof ring. A through hole communicating with the groove is provided between the mold base and the template. The through hole matches the connecting post, and the connecting post is connected in the through hole.

[0008] S3. Outer shell placement: Assemble the TYPE C outer shell onto the positioning end and make the end face of the annular protrusion adjacent to the top face of the connecting post;

[0009] S4. Dispensing: Send the mold along with the TYPE C shell to the dispensing machine, and inject liquid silicone into the mold cavity through the dispensing machine;

[0010] S5. Silicone Curing: Remove the mold from the dispensing machine and allow the silicone in the mold groove to cure and form a waterproof ring on the TYPE C shell;

[0011] S6. Product unloading: Remove the TYPE C shell from the mold.

[0012] Preferably, one end of the waterproof ring is provided with a bevel.

[0013] The beneficial effects of this invention are as follows: This invention provides a process for forming a waterproof ring on a waterproof TYPE C female connector. First, the TYPE C shell is inverted and assembled onto the positioning end so that the position on the TYPE C shell where the waterproof ring needs to be installed is located in the mold groove. Then, liquid silicone is injected into the mold groove through a dispensing machine. After the silicone in the mold groove has solidified, a waterproof ring is formed on the TYPE C shell. The annular protrusion can prevent the waterproof ring from falling off the TYPE C shell. This invention is suitable for shell structures with annular protrusions at the top and no support platform at the front edge of the shell. It effectively solves the problem of difficult installation of waterproof rings on such shell structures. It has the advantages of simple process, stable manufacturing process, and good mass production capability. Attached Figure Description

[0014] Figure 1 A schematic diagram illustrating the external structure of the mold of the present invention is shown.

[0015] Figure 2 A cross-sectional view of the mold of the present invention is shown.

[0016] Figure 3 This is a schematic diagram illustrating the structure of the TYPE C housing of the TYPE C female connector of the present invention without the addition of a waterproof ring.

[0017] Figure 4 A schematic diagram illustrating the external structure of the TYPE C housing of the present invention after the waterproof ring is added is shown.

[0018] The following are the symbols and their meanings: Waterproof ring 1, sloping surface 10, TYPE C outer shell 2, ring body 20, ring eaves 21, mold 3, mold base 30, template 31, groove 310, mold core 32, connecting column 320, positioning end 321, and insertion hole 33. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure.

[0020] Based on the embodiments described in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0021] refer to Figure 1-4 .

[0022] This invention provides a process for forming a waterproof ring for a waterproof TYPE C female connector, comprising the following steps:

[0023] S1. Shell preparation: Prepare a TYPE C shell 2 that needs to form a waterproof ring 1. The TYPE C shell 2 includes an annular body 20 and an annular protrusion 21 set at one end of the annular body 20.

[0024] S2. Mold preparation: Prepare a mold 3 for molding a waterproof ring 1 on a TYPE C shell 2. The mold 3 includes a mold base 30, a template 31 set on the top of the mold base 30, and a mold core 32. The mold core 32 includes a connecting post 320 and a positioning end 321 connected to the top of the connecting post 320 and matching the inner ring of the TYPE C shell 2. The top of the template 31 is provided with several grooves 310 that match the shape of the waterproof ring 1. A through hole 33 communicating with the grooves 310 is provided between the mold base 30 and the template 31. The through hole 33 matches the connecting post 320, and the connecting post 320 is connected in the through hole 33.

[0025] S3, Outer shell placement: Assemble the TYPE C outer shell 2 onto the positioning end 321 and make the end face of the annular protrusion 21 adjacent to the top face of the connecting post 320;

[0026] S4. Dispensing: Send the mold 3 along with the TYPE C shell 2 to the dispensing machine, and inject liquid silicone into the mold groove 310 through the dispensing machine.

[0027] S5, Silicone Curing: Remove the mold 3 from the dispensing machine and allow the silicone in the molded groove 310 to cure and form a waterproof ring 1 on the TYPEC shell 2;

[0028] S6. Product unloading: Remove the TYPE C shell 2 from the mold 3.

[0029] The process principle is as follows: First, the TYPE C shell 2 is inverted and assembled onto the positioning end 321 so that the position where the waterproof ring 1 needs to be installed on the TYPE C shell 2 is located in the groove 310 of the mold 3. Then, liquid silicone is injected into the groove 310 through a dispensing machine. After the silicone in the groove 310 is cured and formed, the waterproof ring 1 is formed on the TYPE C shell 2. The annular protrusion 21 can prevent the waterproof ring 1 from falling off the TYPE C shell 2. It is suitable for shell structures with annular protrusions at the top and no support platform at the front edge of the shell. It effectively solves the problem of difficult to install waterproof rings on such shell structures. It has the advantages of simple process, stable process, and good mass production.

[0030] Based on the above embodiments, one end of the waterproof ring 1 is provided with a bevel 10 to facilitate the demolding of the waterproof ring 1 from the molded groove 310.

[0031] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A process for forming a waterproof ring on a waterproof TYPE C female connector, characterized in that, It includes the following steps: S1. Shell preparation: Prepare a TYPE C shell that needs to form a waterproof ring. The TYPE C shell includes an annular body and an annular protrusion disposed on the periphery of one end of the annular body. S2. Mold Preparation: Prepare a mold for forming a waterproof ring on the TYPE C shell. The mold includes a mold base, a template disposed on the top of the mold base, and a mold core. The mold core includes a connecting post and a positioning end connected to the top of the connecting post and matching the inner ring of the TYPE C shell. The top of the template is provided with several grooves that match the shape of the waterproof ring. A through hole communicating with the grooves is provided between the mold base and the template. The through hole matches the connecting post, and the connecting post is connected in the through hole. S3. Outer shell placement: Assemble the TYPE C outer shell onto the positioning end and make the end face of the annular protrusion adjacent to the top face of the connecting post; S4. Dispensing: Send the mold along with the TYPE C shell to the dispensing machine, and inject liquid silicone into the mold groove through the dispensing machine; S5. Silicone Curing: Remove the mold from the dispensing machine and allow the silicone in the mold groove to cure and form the waterproof ring on the TYPE C shell; S6. Product unloading: Remove the TYPE C shell from the mold.

2. The waterproof ring forming process of a waterproof TYPE C female connector according to claim 1, characterized in that, One end of the waterproof ring is provided with a bevel.