Waterproof connector

Abstract

The utility model relates to the technical field of USB connectors, and discloses a waterproof connector comprising a PCB, the top of the PCB is provided with a metal housing, the inner wall of the metal housing is provided with a mounting block, one side of the mounting block is sleeved with a sealant, one side of the mounting block is provided with a plastic body, and the plastic body is provided with a waterproof layer. A metal inner shell is fixedly connected to one side of the inner wall of the metal outer shell, a third mounting hole is formed in one side of the bottom of the PCB in a penetrating mode, and a second mounting hole is formed in the middle of the bottom of the PCB in a penetrating mode. According to the utility model, the periphery of the plastic body is integrally wrapped by the metal shielding shell, direct contact between the plastic body and the metal inner shell is avoided, gaps caused by the fact that the periphery of the plastic body shrinks and pulls the sealant when the plastic body is heated at high temperature are prevented, and the metal shielding shell and the metal inner shell are integrally fixed through laser welding, so that the strength is better and greater external force damage can be borne; and a better waterproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of USB connectors, in particular to a waterproof connector. Background Art

[0002] With the rapid development of the electronics industry, electronic products are becoming thinner, lighter, shorter and smaller, which puts higher requirements on the structure and performance of the components of electronic products. Among them, the electrical connector industry is the first to bear the brunt. In order to improve the stability of electrical connectors, connectors with waterproof structures have been developed in the current electrical connector industry to prevent water vapor, dust, etc. from entering the inside of the electrical connector.

[0003] For the existing waterproof TYPE C connector, the assembly gap between the plastic body and the metal inner shell is filled and sealed with glue to achieve waterproofing inside the connector; when the product passes through the high-temperature reflow soldering process, due to different material properties of the plastic body, glue and metal inner shell, the metal absorbs heat and the plastic shrinks in volume at high temperature, and the sealing layer is prone to gaps due to shrinkage. When the product is under external force during use, it is easy to have waterproof failure, resulting in safety problems such as equipment damage, short circuit and fire.

[0004] In view of the above problems, a waterproof connector is proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a waterproof connector, which solves the problem of waterproof failure of the product in the background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A waterproof connector, including a PCB board, a metal shell is arranged on the top of the PCB board, mounting blocks are arranged on the inner wall of the metal shell, a sealing glue is sleeved on one side of the mounting block, a plastic body is arranged on one side of the mounting block, a metal inner shell is fixedly connected to one side of the inner wall of the metal shell, a third mounting hole is penetrated and opened at one side of the bottom of the PCB board, a second mounting hole is penetrated and opened in the middle of the bottom of the PCB board, a first mounting hole is penetrated and opened at the other side of the bottom of the PCB board, a mounting component is arranged at the bottom of the metal shell, and a waterproof rubber ring is arranged on the outer wall of the metal inner shell.

[0007] By adopting the above technical solution, such a design is very useful in a humid environment or occasions where waterproofing is required, which can protect the internal circuit of the connector from water vapor, liquid, etc., and ensure the stability and reliability of the connector.

[0008] As a further description of the above technical solution: The installation component includes a third installation rod, which is fixedly connected to the bottom of the metal housing. The middle of the bottom of the metal housing is fixedly connected with a second installation rod, and one side of the bottom of the metal housing is fixedly connected with a first installation rod.

[0009] By adopting the above technical solution, the metal housing and the PCB board can be conveniently installed through the first installation rod, the second installation rod and the third installation rod.

[0010] As a further description of the above technical solution: The third installation rod passes through and is slidably connected with the third installation hole, the second installation rod passes through and is slidably connected with the second installation hole, and the first installation rod passes through and is slidably connected with the first installation hole.

[0011] By adopting the above technical solution, the first installation rod, the second installation rod and the third installation rod can be limited through the first installation hole, the second installation hole and the third installation hole.

[0012] As a further description of the above technical solution: Limiting grooves are respectively provided through the front and rear sides of the top of the metal housing.

[0013] By adopting the above technical solution, the installation block can be conveniently fixed through the limiting grooves.

[0014] As a further description of the above technical solution: Limiting holes are respectively provided through the front and rear sides of the top of the installation block, and the limiting holes are engaged with the limiting grooves.

[0015] By adopting the above technical solution, the limiting holes can cooperate with the limiting grooves.

[0016] As a further description of the above technical solution: A metal middle steel sheet is fixedly connected to the middle of one side of the plastic body, and conductive terminals are fixedly connected to the top and bottom of one side of the plastic body.

[0017] By adopting the above technical solution, the addition of the metal middle steel sheet may be used to provide structural strength or the ground wire function of the connector, while the conductive terminals help to ensure the electrical connection reliability between the connector and other circuit components.

[0018] As a further description of the above technical solution: A metal shielding shell is slidably connected through one side of the outer wall of the plastic body.

[0019] By adopting the above technical solution, the metal shielding shell can effectively provide electromagnetic shielding protection to prevent the influence of external electromagnetic interference on the internal circuit of the connector.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] A waterproof connector provided by the utility model first wraps the periphery of the plastic body with a metal shielding shell to avoid direct contact between the plastic body and the metal inner shell, prevent the overall shrinkage and pulling of the sealant around the plastic body when it is heated at high temperature, and at the same time, the metal shielding shell and the metal inner shell are integrally fixed by laser welding, with better strength and the ability to withstand greater external force damage, achieving a better waterproof effect. Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a perspective view of the utility model;

[0024] Figure 3 It is a bottom view of the utility model.

[0025] Legend Explanation:

[0026] 1. PCB board; 2. Metal shell; 3. Limiting groove; 4. Installation block; 5. Limiting hole; 6. Plastic body; 7. Metal middle steel sheet; 8. Conductive terminal; 9. Metal shielding shell; 10. Metal inner shell; 11. Waterproof rubber ring; 12. First installation hole; 13. First installation rod; 14. Second installation hole; 15. Second installation rod; 16. Third installation hole; 17. Third installation rod; 18. Sealant. Specific Embodiment

[0027] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0028] To further understand the content of the utility model, the utility model will be described in detail in conjunction with the drawings.

[0029] Combined with Figure 1, A waterproof connector of the present utility model includes a PCB board 1. On one side of the bottom of the PCB board 1, a third mounting hole 16 is penetrated and opened. In the middle of the bottom of the PCB board 1, a second mounting hole 14 is penetrated and opened. On the other side of the bottom of the PCB board 1, a first mounting hole 12 is penetrated and opened. An installation component is provided at the bottom of the metal shell 2. On the front and rear sides of the top of the metal shell 2, limiting grooves 3 are penetrated and provided. On the front and rear sides of the top of the mounting block 4, limiting holes 5 are penetrated and opened, and the limiting holes 5 are engaged with the limiting grooves 3. In the middle of one side of the plastic body 6, a metal middle steel sheet 7 is fixedly connected. On the top and bottom of one side of the plastic body 6, conductive terminals 8 are fixedly connected. On one side of the outer wall of the plastic body 6, a metal shielding shell 9 is penetrated and slidably connected;

[0030] The present invention is composed of a plastic body 6, conductive terminals 8, a metal middle steel sheet 7, a metal shielding shell 9, a metal inner shell 10, a metal shell 2, a waterproof rubber ring 11, and an internal sealant 18. The conductive terminals 8 and the metal middle steel sheet 7 are injection-molded in the plastic body 6. The metal shielding shell 9, the metal inner shell 10, and the metal shell 2 are fixed together by laser welding.

[0031] Combined Figure 2 and Figure 3 , A metal shell 2 is provided on the top of the PCB board 1. An installation block 4 is provided on the inner wall of the metal shell 2. A sealant 18 is sleeved on one side of the installation block 4. A plastic body 6 is provided on one side of the installation block 4. A metal inner shell 10 is fixedly connected to one side of the inner wall of the metal shell 2. A waterproof rubber ring 11 is provided on the outer wall of the metal inner shell 10;

[0032] After the plastic body 6 is installed in the metal shielding shell 9, the whole is loaded into the metal inner shell 10 and laser-welded together. After being loaded into the metal shell 2 and laser-welded, the inverted structure is integrally fixed. After assembly, a dispensing groove is formed, and the internal sealant is injected into the dispensing groove to form an internal sealing structure. The waterproof rubber ring 11 is adhesively bonded to the periphery of the front end of the metal inner shell 10 through glue, and the external waterproof function is realized after matching with the whole machine shell.

[0033] Combined Figure 3 , The installation component includes a third mounting rod 17. The third mounting rod 17 is fixedly connected to the bottom of the metal shell 2. A second mounting rod 15 is fixedly connected to the middle of the bottom of the metal shell 2. A first mounting rod 13 is fixedly connected to one side of the bottom of the metal shell 2. The third mounting rod 17 is penetrated and slidably connected with the third mounting hole 16. The second mounting rod 15 is penetrated and slidably connected with the second mounting hole 14. The first mounting rod 13 is penetrated and slidably connected with the first mounting hole 12;

[0034] The periphery of the plastic body 6 is integrally coated with a metal shielding case 9 to prevent the direct contact between the plastic body 6 and the metal inner case 10, and to prevent the sealant 18 from having gaps due to the overall shrinkage and pulling around the plastic body 6 when heated at high temperature. At the same time, the metal shielding case 9 and the metal inner case 10 are integrally fixed by laser welding, with better strength to withstand greater external force damage and better waterproof effect.

[0035] Working principle: The metal shielding case 9 of the waterproof TYPE C connector is installed on the tongue and fixing part of the plastic body 6, and then the whole is installed into the metal inner case 10. The metal shielding case 9 and the metal inner case 10 are fixed by laser welding. Externally, a metal outer case 2 is installed and fixed by laser welding and reverse buckling structure. After assembly, a dispensing groove (for filling sealant) is formed. A waterproof rubber ring 11 is installed at the periphery of the front end of the metal inner case 10 to achieve the waterproof function inside and outside the product. The waterproof TYPE C connector and the PCB are installed and fixed by reflow soldering process to achieve the transmission of power and signals.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof connector, comprising a PCB board (1), characterized in that: A metal shell (2) is arranged on the top of the PCB board (1), a mounting block (4) is arranged on the inner wall of the metal shell (2), a sealing glue (18) is sleeved on one side of the mounting block (4), a plastic body (6) is arranged on one side of the mounting block (4), a metal inner shell (10) is fixedly connected to one side of the inner wall of the metal shell (2), a third mounting hole (16) is penetrated and opened on one side of the bottom of the PCB board (1), a second mounting hole (14) is penetrated and opened in the middle of the bottom of the PCB board (1), a first mounting hole (12) is penetrated and opened on the other side of the bottom of the PCB board (1), a mounting assembly is arranged on the bottom of the metal shell (2), and a waterproof rubber ring (11) is arranged on the outer wall of the metal inner shell (10).

2. A waterproof connector according to claim 1, characterized in that: The mounting assembly comprises a third mounting rod (17), the third mounting rod (17) being fixedly connected to the bottom of the metal shell (2), a second mounting rod (15) being fixedly connected to the middle of the bottom of the metal shell (2), and a first mounting rod (13) being fixedly connected to one side of the bottom of the metal shell (2).

3. A waterproof connector according to claim 2, characterized in that: The third mounting rod (17) penetrates and is slidably connected to the third mounting hole (16), the second mounting rod (15) penetrates and is slidably connected to the second mounting hole (14), and the first mounting rod (13) penetrates and is slidably connected to the first mounting hole (12).

4. A waterproof connector according to claim 1, characterized in that: Limiting grooves (3) are provided through and on both the front and rear sides of the top of the metal shell (2).

5. A waterproof connector according to claim 1, characterized in that: Limiting holes (5) are penetrated and provided on both the front and rear sides of the top of the installation block (4), and the limiting holes (5) are engaged with the limiting grooves (3).

6. A waterproof connector according to claim 1, characterized in that: A metal steel sheet (7) is fixedly connected to the middle of one side of the plastic body (6), and conductive terminals (8) are fixedly connected to the top and bottom of one side of the plastic body (6).

7. A waterproof connector according to claim 1, characterized in that: A metal shielding shell (9) penetrates and is slidably connected to one side of the outer wall of the plastic body (6).

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