A die-cast one-piece waterproof Type-C connector

Abstract

This utility model discloses a die-cast, one-piece waterproof Type-C connector, comprising: a seamless, one-piece die-cast shell with an installation space and a stepped groove; a terminal assembly including an insulating base and terminals fixed within the insulating base, a plug seat formed on the rear side of the insulating base, the pins of the terminals extending along the rear end face of the plug seat, and a sealing ring integrally formed on the rear end of the plug seat; the terminal assembly is inserted into the installation space of the seamless shell, the plug seat is embedded in the stepped groove, and the outer surface of the sealing ring forms an interference fit with the inner wall of the stepped groove, creating a seamless connection between the outer surface of the plug seat and the inner wall of the stepped groove, thus forming primary waterproofing; a glue injection groove is formed between the rear end face of the plug seat and the rear side of the stepped groove, into which waterproofing is injected and cured to form a sealing block, which also covers the pins of the terminals, forming secondary waterproofing. This utility model has a simpler structure, fewer parts, reduces costs, and improves assembly efficiency.

Description

Technical fields:

[0001] This utility model relates to the technical field of connector products, and specifically to a die-cast one-piece molded waterproof Type-C connector. Background technology:

[0002] In electronic device connectivity, Type-C connectors have become the standard interface for many electronic products due to their reversible insertion convenience and high-speed transmission capabilities. However, with the continuous expansion of application scenarios, especially in outdoor, humid, or liquid-prone environments, the waterproof performance of Type-C connectors has become particularly important.

[0003] Chinese utility model patent application number 202021469090.6 discloses a novel USB TYPE-C waterproof connector data interface, including a plug-in assembly and a support base. The plug-in assembly includes terminals, a plug-in base integrally molded to cover the terminals, and a metal shell sleeved over the plug-in base. The plug-in base includes a plug-in end and a positioning end. One end of the terminal and the plug-in end form a plug connector within the metal shell. The terminal protrudes from the side of the plug-in end, and a plug-in gap is formed between the periphery of the plug connector and the inner wall surface of the metal shell. The other end of the terminal extends out of the positioning end, and the periphery of the positioning end is interference-fitted with the inner wall surface of the metal shell to form a positioning seat. The support base is integrally molded and has a plug-in hole. The plug-in assembly is inserted into the plug-in hole, and the periphery of the positioning seat is sealed to the inner wall surface of the plug-in hole. The connector assembly, including the connector base and the support base, is integrally molded. After the connector assembly is inserted into the connector hole of the support base, the mating surfaces between the components can easily achieve a seal through interference fit, improving waterproof performance and avoiding affecting the transmission function.

[0004] However, the aforementioned USB TYPE-C waterproof connector data interface involves inserting the plug component into the support base and then sealing the rear opening of the support base with glue to achieve a seal between the plug component and the inner wall of the support base. This additional use of the support base increases the number of parts, raises the manufacturing cost of the support base, and increases the assembly steps of the support base, which is not conducive to improving the product's market competitiveness.

[0005] In view of the above, the inventors propose the following technical solution. Utility model content:

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a die-cast one-piece molded waterproof Type-C connector.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a die-cast one-piece waterproof Type-C connector includes: a seamless die-cast one-piece shell with an installation space extending through the front and rear ends, and a stepped groove provided on the rear inner wall of the installation space; a terminal assembly including an insulating base and terminals fixed in the insulating base, a plug seat formed on the rear side of the insulating base, the pins of the terminals extending along the rear end face of the plug seat, and a ring-shaped sealing ring protruding outwardly formed on the rear end of the plug seat; the terminal assembly is inserted into the installation space of the seamless shell, the plug seat is embedded in the stepped groove, and the outer surface of the sealing ring forms an interference fit with the inner wall of the stepped groove, so that there is no gap between the outer surface of the plug seat and the inner wall of the stepped groove; a glue injection groove is formed between the rear end face of the plug seat and the rear side of the stepped groove, and waterproof glue is injected into the glue injection groove and cured to form a sealing block, the sealing block also wraps the pins of the terminals, and the pins of the terminals also partially protrude from the sealing block.

[0008] Furthermore, in the above technical solution, the seamless outer shell has an integrally formed positioning groove and a baffle located behind the positioning groove. A waterproof ring is fitted inside the positioning groove. The inner and rear sides of the waterproof ring are both flat. The inner side of the waterproof ring is in contact with the bottom surface of the positioning groove, the rear side of the waterproof ring is in contact with the front face of the baffle, and the outer side of the waterproof ring protrudes beyond the outer side of the baffle.

[0009] Furthermore, in the above technical solution, all terminal pins are fixed on a fixing strip, and the welded part of the pin extends out of the fixing strip. The sealing block also wraps part or all of the fixing strip.

[0010] Furthermore, in the above technical solution, the fixing strip is integrally fixed to the pins of all terminals by in-mold injection molding.

[0011] Furthermore, in the above technical solution, both sides of the front end of the fixing strip are integrally formed with support parts, and the front end of the support parts abuts against or is integrally connected to the rear end face of the plug-in socket.

[0012] Furthermore, in the above technical solution, the insulating base is also fitted with an EMC sleeve, and the EMC sleeve abuts against the front end of the plug-in base.

[0013] Furthermore, in the above technical solution, the EMC sleeve and the insulating base are fastened by an interference fit, and the EMC sleeve is also snapped and fixed to the plug-in base.

[0014] Furthermore, in the above technical solution, the upper and lower sides of the connector are provided with snap-fit ​​grooves and limiting grooves located on both sides of the snap-fit ​​grooves, and a snap-fit ​​block is provided in the snap-fit ​​groove; the upper and lower sides of the rear end of the EMC sleeve are provided with snap-fit ​​plates adapted to the snap-fit ​​grooves and limiting pieces located on both sides of the snap-fit ​​plates. The snap-fit ​​plates have snap-fit ​​holes. After the snap-fit ​​plates are inserted into the snap-fit ​​grooves and pass over the snap-fit ​​blocks, they are reset by their own elasticity, so that the snap-fit ​​holes of the snap-fit ​​plates are engaged and fixed with the snap-fit ​​blocks, and the limiting pieces are inserted into the limiting grooves for limiting.

[0015] Furthermore, in the above technical solution, the ends of both the card plate and the limiting piece are bent to form outwardly folded edges.

[0016] Furthermore, in the above technical solution, the insulating base is also provided with a middle iron sheet, and the terminal includes an upper terminal and a lower terminal that are distributed in two layers at intervals; the middle iron sheet is placed between the upper terminal and the lower terminal.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0018] This invention employs a seamless, die-cast, one-piece housing, which has no gaps. Compared to a housing formed by rounding, the seamless housing itself provides a more ideal sealing and waterproof effect. When the terminal assembly is inserted into the installation space of the seamless housing, the connector is embedded in the stepped groove, and the outer surface of the sealing ring forms an interference fit with the inner wall of the stepped groove, creating a seamless seal between the outer surface of the connector and the inner wall of the stepped groove, thus forming a primary waterproof seal. Furthermore, a sealing block is formed by the curing of waterproof adhesive between the rear end face of the connector and the rear side of the stepped groove. This sealing block also covers the pins of the terminal, forming a secondary waterproof seal, resulting in an extremely ideal waterproof effect. In addition, because the outer surface of the connector is sealed with an interference fit between the sealing ring and the inner wall of the stepped groove, the waterproof adhesive will not overflow onto the insulating base and terminals during subsequent injection, thus avoiding any impact on the quality of the terminal assembly. This eliminates the need for subsequent cleaning of any waterproof adhesive that has overflowed onto the insulating base and terminals. Meanwhile, the terminal assembly and the seamless housing in this utility model achieve waterproofing directly, eliminating the need for additional support bases to achieve a sealed waterproof seal. Its structure is simpler, with fewer parts, which can reduce costs and improve assembly efficiency, thereby enhancing the product's market competitiveness. Attached image description:

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the present invention from another angle;

[0021] Figure 3 This is an exploded perspective view of the present invention;

[0022] Figure 4 This is a cross-sectional view of the present invention;

[0023] Figure 5 This is a perspective view of the seamless outer shell in this utility model;

[0024] Figure 6 This is a perspective view of the seamless outer shell of this utility model from another angle;

[0025] Figure 7 This is a perspective view of the terminal assembly in this utility model;

[0026] Figure 8 This is a perspective view of the terminal assembly in this utility model from another angle. Detailed implementation method:

[0027] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0028] See Figure 1-8 As shown, a die-cast one-piece waterproof Type-C connector includes: a seamless housing 1 and a terminal assembly 2 installed inside the seamless housing 1.

[0029] The seamless housing 1 is a die-cast integral metal shell with an installation space 11 that runs through the front and rear ends, and a stepped groove 12 is provided on the rear inner wall of the installation space 11; the terminal assembly 2 is inserted into the installation space 11 of the seamless housing 1, and a matching slot for the mating connector is formed between the front end of the terminal assembly 2 and the front end of the installation space 11.

[0030] The terminal assembly 2 includes an insulating base 21 and a terminal 22 fixed within the insulating base 21. A plug-in base 23 is formed on the rear side of the insulating base 21. The pins 221 of the terminal 22 extend along the rear end face of the plug-in base 23. A ring-shaped sealing ring 231 is integrally formed on the rear end of the plug-in base 23, protruding outward. The plug-in base 23 is embedded in a stepped groove 12, and the outer surface of the sealing ring 231 forms an interference fit with the inner wall of the stepped groove 12, so that there is no gap between the outer surface of the plug-in base 23 and the inner wall of the stepped groove 12. A glue injection groove is formed between the rear end face of the plug-in base 23 and the rear side of the stepped groove 12. Waterproof glue is injected into the glue injection groove and cured to form a sealing glue block 3. The sealing glue block 3 also covers the pins 221 of the terminal 22, and the pins 221 of the terminal 22 partially protrude from the sealing glue block 3. In other words, this utility model uses a seamless die-cast shell, which has no gaps. Compared with the shell formed by rounding, the seamless shell itself has a more ideal sealing and waterproof effect. When the terminal assembly 2 is inserted into the installation space 11 of the seamless shell 1, the plug 23 is embedded in the stepped groove 12, and the outer surface of the sealing ring 231 forms an interference fit with the inner wall of the stepped groove 12, so that there is no gap between the outer surface of the plug 23 and the inner wall of the stepped groove 12, forming a primary sealing and waterproof effect. On this basis, the rear end face of the plug 23 and the rear side of the stepped groove 12 are formed by the curing of waterproof adhesive to form a sealing block 3. The sealing block 3 also wraps the pin 221 of the terminal 22, thereby forming a secondary sealing and waterproof effect, so as to have an extremely ideal waterproof effect. Furthermore, since the outer surface of the connector 23 is sealed with the inner wall of the stepped groove 12 through an interference fit via the sealing ring 231, the waterproof adhesive will not overflow onto the insulating base 21 and terminal 22 when waterproof adhesive is poured, thus avoiding affecting the quality of the terminal assembly 2. Consequently, there is no need to spend time cleaning up any waterproof adhesive that has overflowed onto the insulating base 21 and terminal 22 later. Simultaneously, the terminal assembly 2 in this invention achieves direct waterproofing between itself and the seamless housing 1, eliminating the need for an additional support base for sealing. This results in a simpler structure with fewer parts, reducing costs and improving assembly efficiency, thereby enhancing the product's market competitiveness.

[0031] To achieve front-end waterproofing, the following design was implemented: A positioning groove 13 and a baffle 14 located behind the positioning groove 13 are integrally formed on the outer periphery of the front end of the seamless outer shell 1. The positioning groove 13 and the baffle 14 are directly formed during the die-casting process of the seamless outer shell 1, eliminating the need for secondary processing and significantly reducing processing time while improving efficiency. A waterproof ring 15 is fitted inside the positioning groove 13, with its outer surface protruding beyond the outer surface of the baffle 14. This waterproof ring allows for a sealed contact with the mounting housing, ensuring a waterproof seal between the device and the mounting housing.

[0032] To improve assembly stability, the following design was also made: the inner and rear sides of the waterproof ring 15 are both flat. The inner side of the waterproof ring 15 is in contact with the bottom surface of the positioning groove 13, and the rear side of the waterproof ring 15 is in contact with the front end face of the baffle 14. Its base area is large, which can generate a large friction force, thereby improving the assembly stability of the two and preventing the waterproof ring 15 from accidentally falling out of the positioning groove 13.

[0033] In some embodiments, to achieve better positioning of all terminals and improve assembly efficiency, the following design is implemented: the pins 221 of all terminals 22 are fixed to a fixing strip 24, which ensures stable positioning of the pins 221 and prevents accidental bending of the pins 221, thus guaranteeing product quality. Furthermore, the soldered portion of the pins 221 extends beyond the fixing strip 24, ensuring that the soldered portions of the pins 221 of all terminals 22 are on the same horizontal plane, facilitating subsequent soldering and connection with the PCB board and preventing defects such as cold solder joints. The sealing block 3 also partially or entirely covers the fixing strip 24, improving the stability of the assembly structure.

[0034] The fixing strip 24 is integrally fixed to the pins 221 of all terminals 22 by in-mold injection molding, and its assembly is extremely simple.

[0035] Both sides of the front end of the fixing strip 24 are integrally formed with support parts 241. The front end of the support part 241 abuts against or is integrally connected to the rear end face of the plug-in 23. This can improve the stability of the assembly structure, so as to better support and position the pins 221 of all terminals 22.

[0036] In some embodiments, the insulating base 21 is further fitted with an EMC sleeve 5, and the EMC sleeve 5 abuts against the front end of the plug-in base 23. The EMC sleeve 5 can better achieve the anti-interference function.

[0037] The EMC sleeve 5 is fastened to the insulating base 21 by an interference fit, and the EMC sleeve 5 is also snapped to the plug-in base 23, thus forming a double fastening assembly, which can effectively prevent the EMC sleeve 5 from accidentally detaching from the insulating base 21.

[0038] The specific assembly structure of the EMC sleeve 5 and the insulating base 21 is as follows: the upper and lower sides of the plug-in base 23 are provided with snap-fit ​​grooves 232 and limiting grooves 233 located on both sides of the snap-fit ​​grooves 232. The snap-fit ​​grooves 232 are provided with snap-fit ​​blocks 234. The upper and lower sides of the rear end of the EMC sleeve 5 are provided with snap-fit ​​plates 51 that are adapted to the snap-fit ​​grooves 232 and limiting pieces 52 located on both sides of the snap-fit ​​plates 51. The snap-fit ​​plates 51 have snap-fit ​​holes 511. After the snap-fit ​​plates 51 are inserted into the snap-fit ​​grooves 232 and pass over the snap-fit ​​blocks 234, they are reset by their own elasticity, so that the snap-fit ​​holes 511 of the snap-fit ​​plates 51 are engaged and fixed with the snap-fit ​​blocks 234. This can effectively prevent the EMC sleeve 5 from accidentally detaching from the insulating base 21. The limiting pieces 52 and the limiting grooves 233 are inserted to limit the movement, forming a more stable assembly structure.

[0039] The ends of the card plate 51 and the limiting piece 52 are bent to form outward folded edges 50. These folded edges 50 have a guiding function, which can effectively prevent the card plate 51 and the limiting piece 52 from failing to smoothly enter the card slot 232 and the limiting slot 233.

[0040] The insulating base 21 is also provided with a middle iron sheet 25. The terminal 22 includes an upper terminal 201 and a lower terminal 202 that are distributed in two layers at intervals. The middle iron sheet 25 is placed between the upper terminal 201 and the lower terminal 202, which can prevent crosstalk between the upper terminal 201 and the lower terminal 202.

[0041] In summary, this utility model uses a seamless die-cast shell, which has no gaps. Compared with a shell formed by rounding, the seamless shell itself has a more ideal sealing and waterproof effect. When the terminal assembly 2 is inserted into the installation space 11 of the seamless shell 1, the plug 23 is embedded in the stepped groove 12, and the outer surface of the sealing ring 231 forms an interference fit with the inner wall of the stepped groove 12, so that there is no gap between the outer surface of the plug 23 and the inner wall of the stepped groove 12, forming a primary sealing and waterproof effect. On this basis, a sealing block 3 is formed by the curing of waterproof adhesive between the rear end face of the plug 23 and the rear side of the stepped groove 12. The sealing block 3 also wraps around the pin 221 of the terminal 22, thereby forming a secondary sealing and waterproof effect, resulting in an extremely ideal waterproof effect. Furthermore, since the outer surface of the connector 23 is sealed with the inner wall of the stepped groove 12 through an interference fit via the sealing ring 231, the waterproof adhesive will not overflow onto the insulating base 21 and terminal 22 when waterproof adhesive is poured, thus avoiding affecting the quality of the terminal assembly 2. Consequently, there is no need to spend time cleaning up any waterproof adhesive that has overflowed onto the insulating base 21 and terminal 22 later. Simultaneously, the terminal assembly 2 in this invention achieves direct waterproofing between itself and the seamless housing 1, eliminating the need for an additional support base for sealing. This results in a simpler structure with fewer parts, reducing costs and improving assembly efficiency, thereby enhancing the product's market competitiveness.

[0042] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A die-cast integrally-molded housing waterproof Type-C connector, characterized by: include: The seamless housing (1) is integrally formed by die casting, which has an installation space (11) that runs through the front and rear ends, and the inner wall of the rear side of the installation space (11) is provided with a stepped groove (12). Terminal assembly (2) includes an insulating base (21) and a terminal (22) fixed in the insulating base (21). A plug-in base (23) is formed on the rear side of the insulating base (21). The pins (221) of the terminal (22) extend along the rear end face of the plug-in base (23). A ring-shaped sealing ring (231) is integrally formed on the rear end of the plug-in base (23). The terminal assembly (2) is inserted into the installation space (11) of the seamless housing (1). The plug-in (23) is embedded in the stepped groove (12), and the outer surface of the sealing ring (231) forms an interference fit sealing assembly with the inner wall of the stepped groove (12), so that there is no gap between the outer surface of the plug-in (23) and the inner wall of the stepped groove (12). A glue injection groove is formed between the rear end face of the plug-in (23) and the rear side of the stepped groove (12). Waterproof glue is injected into the glue injection groove and cured to form a sealing glue block (3). The sealing glue block (3) also wraps the pin (221) of the terminal (22), and the pin (221) of the terminal (22) also partially protrudes out of the sealing glue block (3).

2. The die-cast integrally-molded housing waterproof Type-C connector according to claim 1, characterized by: The seamless outer shell (1) has an integrally formed positioning groove (13) and a baffle (14) located behind the positioning groove (13) on the front periphery. A waterproof ring (15) is fitted inside the positioning groove (13). The inner and rear sides of the waterproof ring (15) are flat. The inner side of the waterproof ring (15) is in contact with the bottom surface of the positioning groove (13). The rear side of the waterproof ring (15) is in contact with the front face of the baffle (14). The outer side of the waterproof ring (15) protrudes beyond the outer side of the baffle (14).

3. The integrally-molded die-cast enclosure waterproof Type-C connector of claim 1, wherein: All the pins (221) of the terminals (22) are fixed on a fixing strip (24), and the soldered part of the pin (221) extends out of the fixing strip (24). The sealing block (3) also wraps part or all of the fixing strip (24).

4. The integrally-molded die-cast enclosure waterproof Type-C connector of claim 3, wherein: The fixing strip (24) is integrally fixed to the pins (221) of all terminals (22) by in-mold injection molding.

5. The integrally-molded die-cast enclosure waterproof Type-C connector of claim 4, wherein: The front ends of the fixing strip (24) are integrally formed with support parts (241), and the front end of the support part (241) abuts against the rear end face of the plug-in seat (23) or is integrally connected to the rear end face of the plug-in seat (23).

6. The integrally-molded die-cast enclosure waterproof Type-C connector of any one of claims 1-5, wherein: The insulating base (21) is also fitted with an EMC sleeve (5), and the EMC sleeve (5) abuts against the front end of the plug-in base (23).

7. The die-cast integrally-molded housing waterproof Type-C connector according to claim 6, characterized by: The EMC sleeve (5) is fastened to the insulating base (21) by an interference fit, and the EMC sleeve (5) is also snapped to the plug-in base (23).

8. The die-cast integrally-molded housing waterproof Type-C connector according to claim 7, characterized by: The connector (23) is provided with a snap-fit ​​groove (232) on both the upper and lower sides and a limiting groove (233) on both sides of the snap-fit ​​groove (232). A snap-fit ​​block (234) is provided in the snap-fit ​​groove (232). The EMC sleeve (5) is provided with a snap-fit ​​plate (51) adapted to the snap-fit ​​groove (232) on both the upper and lower sides of the rear end and a limiting piece (52) on both sides of the snap-fit ​​plate (51). The snap-fit ​​plate (51) has a snap-fit ​​hole (511). After the snap-fit ​​plate (51) is inserted into the snap-fit ​​groove (232) and passes over the snap-fit ​​block (234), it is reset by its own elasticity, so that the snap-fit ​​hole (511) of the snap-fit ​​plate (51) is fastened and fixed with the snap-fit ​​block (234), and the limiting piece (52) is inserted into the limiting groove (233) for limiting.

9. The die-cast integrally-molded housing waterproof Type-C connector of claim 8, wherein: The ends of the card plate (51) and the limiting piece (52) are both bent to form outward folded edges (50).

10. The integrally-molded die-cast enclosure waterproof Type-C connector of any one of claims 7-9, wherein: The insulating base (21) is also provided with a middle iron plate (25), and the terminal (22) includes an upper terminal (201) and a lower terminal (202) that are distributed in two layers at intervals; the middle iron plate (25) is placed between the upper terminal (201) and the lower terminal (202).

Images