A USB type-c corrosion-proof modular connector

Abstract

The utility model provides a kind of USB TYPE-C anticorrosion modular connector, comprising: two pieces of symmetrically separated middle clamps, two pieces of middle clamps are molded with female seat by first MD piece injection, female seat front end extends and forms exposed tongue piece, first MD piece front middle end and outer end are respectively arranged with multiple first PIN pin and second PIN pin in upper and lower two rows distribution, multiple first PIN pin and second PIN pin located in upper row are connected with upper row terminal, multiple first PIN pin and second PIN pin located in lower row are connected with lower row terminal, second MD piece is connected between the tail of first MD piece and upper row terminal, lower row terminal.The kind of USB TYPE-C anticorrosion modular connector, through the tongue piece structure of integration injection, modularization split design, scattered PIN terminal and liquid guide groove and other innovative structures, solve the existing connector's effusion micro short circuit, poor commonality, high development cost and electroplating cost is too high and so on.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and more specifically, to a USB TYPE-C corrosion-resistant modular connector. Background Technology

[0002] USB Type-C (USB C) connectors, as the core charging interface for chargers, mobile phones, and other electronic products, are widely used in consumer electronics and industrial electronics due to their reversible plug-in / plug-out capabilities, high-speed transmission, and high-power supply. With the diversification of electronic product usage scenarios, the demand for USB C connectors in harsh environments such as outdoor spaces and industrial workshops is increasing. These connectors not only require fast charging functionality but also need to meet requirements such as a plug-in / plug-out lifespan of over 10,000 cycles and excellent corrosion resistance and environmental tolerance.

[0003] Currently, USB-C connectors on the market suffer from two major design flaws: First, the terminal injection molding process is unreasonable. The upper and lower rows of terminals are assembled by injection molding separately followed by multiple subsequent molding processes. Each injection creates noticeable joint lines or surfaces between the plastic parts. This joint has poor structural stability, and in harsh environments such as high temperature and humidity, moisture or corrosive media can easily accumulate in the joint gaps, leading to micro-short circuits between the terminals. This severely affects the product's charging performance and lifespan, and may even cause equipment failure. Second, the connector structure is overly integrated. The exposed part of the Type-C female connector and the subsequent soldered part are designed as a single unit, while the USB-C connector's mating tongue part uses a customized standard structure from the industry association. This integrated design requires different specifications of products to be completely redeveloped, making it impossible to reuse the core structure. This not only results in poor compatibility but also significantly increases development costs and time. At the same time, the complex integrated structure also restricts the realization of fully automated production.

[0004] In addition, the terminals of existing USB C connectors are mostly of uniform electroplating specifications. In order to meet the corrosion resistance requirements in harsh environments, all terminals need to be treated with high-specification corrosion-resistant electroplating, which results in high electroplating process costs and further increases the manufacturing cost of the product. Utility Model Content

[0005] The present invention aims to solve the technical problems mentioned in the background art and provide a USB TYPE-C corrosion-resistant modular connector.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a USB TYPE-C corrosion-resistant modular connector, comprising: two symmetrically separated middle clips, the two middle clips being injection molded with a female base by a first MD component, the front end of the female base extending to form an exposed tongue, the front middle and outer ends of the first MD component being respectively arranged with a plurality of first PIN pins and second PIN pins distributed in two rows, the plurality of first PIN pins and second PIN pins located in the upper row being connected to upper row terminals, the plurality of first PIN pins and second PIN pins located in the lower row being connected to lower row terminals, and a second MD component being connected between the tail end of the first MD component and the upper row terminals and the lower row terminals.

[0007] A further preferred embodiment: a liquid guiding groove is provided between adjacent terminals of the exposed tongue.

[0008] A further preferred embodiment: the length of the first PIN pin is shorter than the length of the second PIN pin, and the first PIN pin and the second PIN pin are loose PINs.

[0009] A further preferred embodiment: the second MD component is externally fixed with a housing.

[0010] Beneficial effects:

[0011] 1. By integrally injection molding the middle clip and the first MD part into the exposed tongue of the female base, the plastic joint line or gap caused by traditional multiple injection molding is avoided, reducing the accumulation space of moisture and corrosive media from the structural source; at the same time, the liquid guide groove between adjacent terminals of the exposed tongue can quickly drain the seepage liquid. The double protection effectively reduces the risk of micro short circuits and corrosion in high temperature and humid environment, and improves the reliability of the product in harsh environment.

[0012] 2. By adopting a modular design for the front tongue-and-mating section and the rear welding section, where the tongue-and-mating section conforms to industry association customization standards, subsequent development of different specifications only requires adjustment of the rear welding section (such as the adaptation structure of the upper row of terminals, lower row of terminals, and the second MD component), without having to redevelop the entire connector. This significantly improves the reusability of the core structure, shortens the development cycle, and reduces development costs. In addition, the modular structure simplifies the assembly process, making it easier to achieve fully automated production and further reducing manufacturing costs.

[0013] 3. By setting the terminals to a discrete pin structure, different electroplating specifications can be adopted according to the functional requirements of different pins (such as using high-specification anti-corrosion electroplating for signal pins with high corrosion resistance requirements, and using conventional electroplating for pins with lower performance requirements), avoiding the cost waste caused by traditional uniform high-specification electroplating, and significantly reducing the cost of electroplating process while meeting the corrosion resistance requirements of harsh environments.

[0014] 4. In summary, this USB TYPE-C corrosion-resistant modular connector, through its integrated injection-molded tongue structure, modular split design, distributed PIN terminals, and liquid guiding groove, solves the problems of liquid accumulation micro-short circuits, poor compatibility, high development costs, and excessive electroplating costs of existing connectors, comprehensively improving the product's environmental adaptability, economy, and production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded structural diagram of the outer shell and the second injection-molded semi-finished product of this utility model;

[0017] Figure 3 This is a bottom-view exploded structural diagram of the outer shell and the second injection-molded semi-finished product of this utility model;

[0018] Figure 4 This is a rear-view three-dimensional structural diagram of the second injection-molded semi-finished product of this utility model;

[0019] Figure 5 This is a rear-view three-dimensional structural diagram of the second MD component of this utility model;

[0020] Figure 6 This is a front-view three-dimensional structural diagram of the second MD component of this utility model;

[0021] Figure 7 This is a schematic diagram of the semi-finished product structure of the terminal after welding according to this utility model;

[0022] Figure 8 This is an exploded structural diagram of the tail welding terminal and the tongue piece after terminal assembly of this utility model;

[0023] Figure 9 This is an exploded view of the upper and lower rows of terminals of this utility model.

[0024] Figure 10 This is a schematic diagram of the structure of the tongue piece after the terminal assembly of this utility model;

[0025] Figure 11 This is an exploded view of the structure of the first injection-molded semi-finished product of the middle clip and the universal terminal of the tongue piece of this utility model; (terminal PIN plug end)

[0026] Figure 12 This is an exploded structural diagram of the universal terminal for the tongue piece located in the upper row of this utility model;

[0027] Figure 13 This is an exploded structural diagram of the universal terminal for the lower row of tongues in this utility model;

[0028] Figure 14 This is a schematic diagram of the structure of the first injection-molded semi-finished product of the middle clip of this utility model;

[0029] Figure 15 This is an exploded structural diagram of the middle clip and the first MD component of this utility model;

[0030] Figure 16 This is a front-view three-dimensional structural diagram of the first MD component of this utility model.

[0031] Figure 1-16 In the middle: 1. Middle clip; 2. First MD component; 3. Tongue; 4. Liquid guide groove; 5. First PIN pin; 6. Second PIN pin; 7. Upper row of terminals; 8. Lower row of terminals; 9. Second MD component; 10. Outer shell. Detailed Implementation

[0032] The following will refer to the appendix in the embodiments of this utility model. Figures 1-16 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0033] Please see Figure 1-16 In this embodiment of the present invention, a USB Type-C anti-corrosion modular connector includes: two symmetrically separated middle clips 1, the middle clips 1 being made of metal (such as brass or stainless steel), which serve to provide rigid support for the terminals and ensure the spacing accuracy of the upper and lower rows of terminals; the two middle clips 1 are injection molded with a female connector through a first MD part 2 (i.e., the first injection molded plastic part), and the front end of the female connector extends to form an exposed tongue 3. The shape and terminal layout of the tongue 3 conform to the customization standards of the USB Type-C industry association, and are used to achieve precise docking with male connectors (such as charging cable plugs). The middle clips 1 are injection molded with the female connector exposed tongue in one injection, which effectively prevents the problem of liquid accumulation and micro-short circuit caused by the joint surface due to multiple injection molding. A liquid guiding groove 4 is provided between adjacent terminals (first PIN 5 and second PIN 6) of the exposed tongue 3 (see Figure 15-16The liquid guiding groove 4 extends along the length of the tongue 3 to the edge of the tongue 3. When a small amount of liquid (such as water vapor condensate or splashed liquid) seeps into the terminal gap, it can be quickly discharged to the outside through the liquid guiding groove 4, avoiding the liquid from stagnating between the terminals and forming a conductive path. The front middle and outer ends of the first MD part 2 are respectively arranged with multiple first PIN pins 5 and second PIN pins 6 arranged in two rows (the upper row corresponds to the upper row terminal 7, and the lower row corresponds to the lower row terminal 8). The length of the first PIN pin 5 is shorter than that of the second PIN pin 6 to adapt to the electrical connection requirements of different functions (such as the first PIN pin 5 can be used as a ground PIN, and the second PIN pin 6 can be used as a signal transmission PIN). It adapts to the different electroplating specifications of different functional PINs, meets the corrosion resistance requirements in harsh environments, and reduces the electroplating cost of all terminals requiring corrosion resistance specifications due to corrosion prevention. The first PIN pin 5 and the second PIN pin 6 are loose PINs (not integrated continuous material design) and can be electroplated separately: for example, for exposed The second PIN 6, which has high requirements for external environment and corrosion resistance, adopts high-specification anti-corrosion electroplating with gold and nickel layers. The first PIN 5, which is internally grounded, is only nickel-plated, thereby reducing electroplating costs while meeting corrosion resistance requirements. The multiple first PINs 5 and second PINs 6 in the upper row are connected to the upper row terminal 7, and the multiple first PINs 5 and second PINs 6 in the lower row are connected to the lower row terminal 8. The connection method between the tail terminals (upper row terminal 7 and lower row terminal 8) and the tongue 3 terminals (multiple first PINs 5 and second PINs 6) is not limited to welding, laser spot welding, high-frequency welding, and contact connection. The rear end of the first MD component 2 is connected to the upper row terminal 7 and the lower row terminal 8 by a second MD component 9. The second MD component 9 is externally fixed with a shell 10. The shell 10 is made of metal (such as aluminum alloy or tinplate) to shield electromagnetic interference, protect the internal structure, and enhance insertion and removal strength. The tail connection method is not limited to board type, recessed type, upright type, and side-standing type. USB The TYPE-C corrosion-resistant modular connector consists of a front tongue 3 mating section and a rear soldering section. Since the front tongue 3 mating section is a customized part of the association, subsequent development of specifications only requires the development of the rear soldering section, resulting in strong commonality, low development costs, and structural optimization that facilitates fully automated production. The USB TYPE-C corrosion-resistant modular connector uses a middle clip for the first injection molding, followed by automatic insertion of the loose pins and a second injection molding. Liquid guide grooves 4 are reserved in the adjacent terminals of the mating tongue 3. This structure effectively solves the problem of micro-short circuits and corrosion caused by moisture accumulation at the joint in high-temperature or humid environments, improving product quality and solving the problem of terminals not charging due to environmental factors.

[0034] After positioning the two middle clips 1, they are injection molded by the first MD part 2 to form the front structure of the female connector including the exposed tongue 3. At this time, the front ends of the first PIN 5 and the second PIN 6 are embedded in the first MD part 2, achieving a tight bond between the terminal and the plastic without the gaps found in traditional multi-injection molding. The upper row of terminals 7 and the lower row of terminals 8 are then inserted into the tail of the first MD part 2 using automated equipment. The upper row of terminals 7 is connected to the first PIN 5 and the second PIN 6 of the upper row, and the lower row of terminals 8 is connected to the first PIN 5 and the second PIN 6 of the lower row. The connection method can be soldering (such as tin soldering), laser spot welding, or high-frequency welding to ensure electrical conductivity. The reliability is improved; a second MD part 9 is formed by injection molding at the connection between the tail of the first MD part 2 and the upper row of terminals 7 and the lower row of terminals 8. The second MD part 9 seals and fixes the connection part of the terminals, further preventing liquid infiltration and enhancing the overall structural strength; a shell 10 is sleeved and fixed on the outside of the second MD part 9; since the exposed tongue 3 is an industry standard structure, when it is necessary to develop connectors of different specifications (such as welding ends of different lengths, tails of different interface types), it is only necessary to replace the corresponding structures of the upper row of terminals 7, the lower row of terminals 8 and the second MD part 9, without adjusting the middle clip 1, the first MD part 2 and the exposed tongue 3, realizing the reuse of the core structure and significantly reducing development costs. Meanwhile, the modular design allows each process (such as injection molding, insertion, and welding) to be completed by automated equipment, improving production efficiency and product consistency. When the connector is used in high-temperature and humid environments, the integrated injection-molded first MD part 2 avoids the risk of liquid accumulation on the traditional mating surface, and the liquid guide groove 4 further drains the seeping liquid to prevent micro-short circuits between terminals. The differentiated electroplating of the scattered PIN terminals ensures the corrosion resistance of key parts while reducing costs. The modular design balances product performance and economy through structural reuse and automated production.

Claims

1. A USB TYPE-C corrosion-resistant modular connector, characterized in that: include: Two symmetrically separated middle clips (1) are provided. The two middle clips (1) are injection molded with a female seat through a first MD part (2). The front end of the female seat extends to form an exposed tongue (3). The front middle end and the outer end of the first MD part (2) are respectively arranged with multiple first PIN pins (5) and second PIN pins (6) distributed in two rows. The multiple first PIN pins (5) and second PIN pins (6) in the upper row are connected to the upper row terminal (7). The multiple first PIN pins (5) and second PIN pins (6) in the lower row are connected to the lower row terminal (8). The tail of the first MD part (2) is connected to the upper row terminal (7) and the lower row terminal (8) with a second MD part (9).

2. The USB TYPE-C corrosion-resistant modular connector according to claim 1, characterized in that: The exposed tongue (3) has a liquid guiding groove (4) between adjacent terminals.

3. A USB TYPE-C corrosion-resistant modular connector according to claim 1, characterized in that: The length of the first PIN (5) is shorter than the length of the second PIN (6), and the first PIN (5) and the second PIN (6) are loose PINs.

4. A USB TYPE-C corrosion-resistant modular connector according to claim 1, characterized in that: The second MD component (9) has an outer shell (10) fixed to its exterior.

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