Waterproof connector

Abstract

The utility model discloses a waterproof connector, and relates to the technical field of connectors. Comprising a plastic main body which is internally provided with a grounding plate and terminal groups distributed on the upper and lower sides of the grounding plate; the bending parts are formed at the top and the bottom of the grounding plate, and the bending parts are in contact with the terminal groups on the corresponding sides to form multi-stage grounding points; the utility model provides an EMI shielding case. A multi-stage grounding point network is constructed through the grounding plate bending part and the terminal group, crosstalk of a high-speed signal pair is effectively isolated, the signal transmission quality is remarkably improved, the integrated structural design enables the plastic main body, the plastic tail seat and the grounding assembly to be subjected to integrated injection molding, the production process is simplified, automatic equipment is adapted, the production efficiency is greatly improved, and the product quality is improved. The double electromagnetic shielding layers and the three-dimensional waterproof design are achieved through the nested metal shell and the controllable glue filling path, the waterproof ring is used in cooperation, the high-frequency anti-interference performance and the lasting waterproof performance are both considered, the overall scheme meets the batch manufacturing requirement while the electrical performance is improved, and wide application prospects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically a waterproof connector. Background Technology

[0002] Connectors, as an indispensable circuit connection component in electronic devices, are used in various applications and structural designs. USB interfaces are a type of connector. There are three different forms of USB interfaces: Type-A, Type-B, and Type-C. Type-C is much smaller than both Type-A and Type-B and is the latest USB interface form factor standard.

[0003] Traditional USB Type-C waterproof connectors are limited by their structure and manufacturing processes, making it difficult to achieve both waterproofing and high-speed signal transmission capabilities, resulting in unsatisfactory performance. Summary of the Invention

[0004] This invention provides a waterproof connector to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof connector, comprising:

[0006] The plastic body has a built-in grounding plate and terminal groups distributed on the upper and lower sides of the grounding plate;

[0007] The bent portions formed at the top and bottom of the grounding plate, which contact the corresponding side terminal groups to form a multi-level grounding point;

[0008] An EMI shielding shell is fitted over the outside of the plastic body.

[0009] Furthermore, one end of the plastic body is connected to a plastic tailstock via a terminal block and a ground plate.

[0010] Furthermore, the EMI shielding shell is fitted with an inner shell, one end of which is engaged with one side of the plastic tailstock.

[0011] Furthermore, the inner shell has an adhesive filling cavity located between the plastic body and the plastic tailstock for filling with cured sealing material.

[0012] Furthermore, the top of the plastic tailstock is provided with an adhesive injection port that communicates with the adhesive filling cavity.

[0013] Furthermore, a sealed cavity connected to the glue filling cavity is provided between the EMI shielding shell and the plastic body.

[0014] Furthermore, it also includes a waterproof ring, which is fitted over the outer shell of the inner shell and has at least one sealing lip.

[0015] Furthermore, it also includes an outer shell, which is fitted over the outer side of the inner shell. The two sides of the outer shell are bent inward to form fixed wing plates that cover the side walls of the inner shell. The fixed wing plates are provided with positioning feet at their ends.

[0016] Furthermore, one end of the outer shell is bent inward to form a fixed tail plate that protects the side wall of the plastic tail seat, and the two ends of the fixed tail plate are bent and interlocked with the two fixed wing plates by snaps.

[0017] Furthermore, one end of the inner shell forms a radially expanding limiting flange, and the waterproof ring is located between the limiting flange and the outer shell.

[0018] Compared with the prior art, the present invention provides a waterproof connector, which has the following advantages:

[0019] This waterproof connector constructs a multi-level grounding network through the bending section of the grounding plate and the terminal group, effectively isolating crosstalk between high-speed signal pairs and significantly improving signal transmission quality. Its integrated structural design allows the plastic body, plastic tailstock, and grounding component to be injection molded as a single piece, simplifying the production process, adapting to automated equipment, and greatly improving production efficiency. The double electromagnetic shielding layer and three-dimensional waterproof design are achieved through a nested metal shell and a controllable glue filling path. When used with a waterproof ring, it balances high-frequency anti-interference and durable waterproof performance. The overall solution improves electrical performance while meeting the needs of mass production and has broad application prospects. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a side view of the structure of this utility model;

[0022] Figure 3 This is an exploded view of the structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the plastic main structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the terminal group structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the grounding plate structure of this utility model;

[0026] Figure 7 This is a cross-sectional view of the bending section structure of this utility model;

[0027] Figure 8 This is a cross-sectional view of the glue injection port structure of this utility model.

[0028] In the diagram: 1. Plastic body; 11. Grounding plate; 12. Terminal group; 13. Bending part; 14. Plastic tailstock; 15. Glue injection port; 2. EMI shielding shell; 3. Inner shell; 31. Limiting flange; 4. Glue filling cavity; 5. Sealing cavity; 6. Waterproof ring; 61. Sealing lip; 7. Outer shell; 71. Fixing wing plate; 72. Positioning foot; 73. Fixing tail plate; 74. Buckle. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-8 This utility model discloses a waterproof connector, including a plastic body 1, which has a built-in ground plate 11 and terminal groups 12 distributed on the upper and lower sides of the ground plate 11.

[0031] The bent portions 13 formed at the top and bottom of the ground plane 11, which contact the corresponding side terminal group 12 to form a multi-level grounding point, form a distributed grounding point network through the direct contact between the upper and lower bent portions 13 of the ground plane 11 and the terminal group 12, which greatly reduces the crosstalk capacitance of high-speed signal pairs and meets the return path requirements of high-speed protocols such as USB4.0.

[0032] An EMI shielding shell 2 is fitted over the outside of the plastic body 1.

[0033] During production, the plastic body 1 and the plastic tail seat 14 are first injection molded and wrapped around the terminal group 12 and the ground plate 11. Then, the EMI shielding shell 2, the inner shell 3, and the outer shell 7 are assembled in sequence. After the outer shell 7 is assembled, the sealing material is filled and cured into the glue filling cavity 4 and the sealing cavity 5 through the glue injection port 15. After the glue is cured, the waterproof ring 6 is finally assembled.

[0034] Specifically, one end of the plastic body 1 is connected to a plastic tailstock 14 via a terminal group 12 and a ground plate 11.

[0035] In this embodiment, the plastic body 1 achieves synchronous extension of the signal transmission path and grounding circuit through the integrated connection design of the terminal group 12 and the grounding plate 11, which enhances the mechanical stability of the overall structure. The plastic body 1 and the plastic tail seat 14 are integrally injection molded and covered on the outside of the terminal group 12 and the grounding plate 11, which meets the requirements of automated production and reduces the manual assembly process.

[0036] Specifically, the EMI shielding shell 2 is fitted with an inner shell 3, and one end of the inner shell 3 is engaged with one side of the plastic tailstock 14.

[0037] In this embodiment, the inner shell 3 and the outer shell 7 are made of alloy steel. The nested design of the inner shell 3 and the EMI shielding shell 2 forms a double electromagnetic shielding layer, which improves the anti-interference capability of high-frequency signals.

[0038] Specifically, the inner shell 3 has an adhesive filling cavity 4 located between the plastic body 1 and the plastic tail 14 for filling and curing sealing material. The top of the plastic tail 14 has an adhesive injection port 15 that communicates with the adhesive filling cavity 4. The EMI shielding shell 2 and the plastic body 1 also have a sealing cavity 5 that communicates with the adhesive filling cavity 4.

[0039] In this embodiment, the curing sealant is epoxy resin potting compound, but polyurethane potting compound or silicone potting compound can also be used. The curing sealant can adaptively fill the glue filling cavity 4 and the sealing cavity 5 to achieve three-dimensional waterproofing. The cavity structure design makes the glue flow path controllable, which is suitable for the standardized operation of automated glue dispensing equipment.

[0040] Specifically, it also includes a waterproof ring 6, which is fitted over the outer shell 3, and the waterproof ring 6 is provided with at least one sealing lip 61.

[0041] In this embodiment, the waterproof ring 6 is provided with two sealing lips 61, which have excellent waterproof effect after being assembled with the female housing 7.

[0042] Specifically, it also includes an outer shell 7, which is fitted outside the inner shell 3. The two sides of the outer shell 7 are bent inward to form fixed wing plates 71 that cover the side walls of the inner shell 3. The fixed wing plates 71 are provided with positioning feet 72 at their ends. One end of the outer shell 7 is bent inward to form a fixed tail plate 73 that protects the side walls of the plastic tail seat 14. The two ends of the fixed tail plate 73 are bent and interlocked with the two fixed wing plates 71 by buckles 74.

[0043] In this embodiment, the positioning foot 72 is used to mount the product on the PCB board, and the same applies to the fixing tail plate 73. The fixing wing plate 71 is provided with a buckle 74, and the two bent portions 13 of the fixing tail plate 73 are provided with slots. The slots and buckles 74 are interlocked, so that the fixing tail plate 73 and the fixing wing plate 71 are connected together, thereby improving the stability of the overall structure of the product.

[0044] Specifically, one end of the inner shell 3 forms a radially expanding limiting flange 31, and the waterproof ring 6 is located between the limiting flange 31 and the outer shell 7.

[0045] In this embodiment, the limiting flange 31 and the outer shell 7 limit the waterproof ring 6, preventing the waterproof ring 6 from shifting due to subsequent insertion and removal, vibration and other environmental factors, thus maintaining excellent waterproof performance.

[0046] In summary, this waterproof connector, through the bend 13 of the grounding plate 11 and the terminal group 12, constructs a multi-level grounding network, effectively isolating crosstalk between high-speed signal pairs and significantly improving signal transmission quality. Its integrated structural design allows the plastic body 1, plastic tailstock 14, and grounding component to be injection molded as a single piece, simplifying the production process, adapting to automated equipment, and greatly improving production efficiency. The dual electromagnetic shielding layer and three-dimensional waterproof design are achieved through a nested metal shell and a controllable glue filling path. When used with the waterproof ring 6, it balances high-frequency anti-interference and durable waterproof performance. The overall solution improves electrical performance while meeting the needs of mass production and has broad application prospects.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof connector, characterized in that, include: The plastic body (1) has a built-in ground plate (11) and terminal groups (12) distributed on the upper and lower sides of the ground plate (11). The bent portions (13) formed at the top and bottom of the grounding plate (11) and the bent portions (13) contact the corresponding side terminal groups (12) to form a multi-level grounding point; An EMI shielding shell (2) is fitted over the outside of the plastic body (1).

2. A waterproof connector according to claim 1, characterized in that: One end of the plastic body (1) is connected to a plastic tailstock (14) via a terminal group (12) and a ground plate (11).

3. A waterproof connector according to claim 2, characterized in that: The EMI shielding shell (2) is fitted with an inner shell (3), and one end of the inner shell (3) is engaged with one side of the plastic tailstock (14).

4. A waterproof connector according to claim 3, wherein: The inner shell (3) has an adhesive filling cavity (4) located between the plastic body (1) and the plastic tailstock (14) for filling with cured sealing material.

5. A waterproof connector according to claim 4, characterized in that: The top of the plastic tailstock (14) is provided with an adhesive injection port (15) that communicates with the adhesive filling cavity (4).

6. A waterproof connector according to claim 1, characterized in that: A sealed cavity (5) connected to the glue filling cavity (4) is also provided between the EMI shielding shell (2) and the plastic body (1).

7. A waterproof connector according to claim 1, wherein: It also includes a waterproof ring (6), which is fitted over the outer shell (3), and the waterproof ring (6) has at least one sealing lip (61).

8. A waterproof connector according to claim 1, characterized in that: It also includes an outer shell (7), which is fitted on the outside of the inner shell (3). The two sides of the outer shell (7) are bent inward to form a fixed wing plate (71) covering the side wall of the inner shell (3). The fixed wing plate (71) is provided with a positioning foot (72) at its end.

9. A waterproof connector according to claim 8, characterized in that: One end of the outer shell (7) is bent inward to form a fixed tail plate (73) covering the side wall of the plastic tail seat (14). The two ends of the fixed tail plate (73) are bent and interlocked with the two fixed wing plates (71) by buckles (74).

10. A waterproof connector according to claim 7, characterized in that: One end of the inner shell (3) forms a radially expanding limiting flange (31), and the waterproof ring (6) is located between the limiting flange (31) and the outer shell (7).

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