Waterproof simple injection-molded Type-C connector

Abstract

The utility model discloses a waterproof simple injection molding Type-C connector. The upper terminal module consists of an upper terminal and an upper insulator which is integrally formed on the upper terminal in an injection molding manner; the lower terminal module consists of a lower terminal and a lower insulator which is integrally formed on the lower terminal in an injection molding manner; the middle iron sheet is clamped and fixed between the upper terminal module and the lower terminal module; the insulating seat is integrally formed on the upper terminal module and the lower terminal module in an injection molding manner; the metal shell is sleeved outside the insulating base, the front end of the metal shell is sleeved with a waterproof ring, an outer insulating sleeve is integrally formed outside the metal shell, the outer insulating sleeve integrally wraps the insulating base and the rear end of the metal shell, and only the front end of the metal shell is exposed; the first pin part of the upper terminal and the second pin part of the lower terminal extend out of the rear end face of the outer insulation sleeve, a step position is formed on the front end face of the outer insulation sleeve and the periphery of the front end of the metal shell, the waterproof ring is sleeved in the step position, and the rear end of the waterproof ring abuts against the front end face of the outer insulation sleeve. The utility model has the advantages of stable structure and good waterproof performance.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to a waterproof and simple injection-molded Type-C connector. Background technology:

[0002] USB, short for Universal Serial Bus (USB), is an external bus standard used to connect and communicate between computers and external devices. It's an interface technology used in the PC industry. USB boasts fast transmission speeds and is highly convenient to use. It also offers plug-and-play and hot-swappable functionality, flexible connectivity, and independent power supply. It can connect to a wide range of devices, including mice, keyboards, printers, scanners, webcams, flash drives, mobile phones, digital cameras, external hard drives, external optical drives, USB network cards, ADSL modems, and cable modems. Almost all external devices have a USB interface, making it extremely widely used. Type-C is a USB connector that can be inserted either way, measuring approximately 8.3mm x 2.5mm. Like other connectors, it supports standard USB functions such as charging, data transfer, and display output.

[0003] A Chinese utility model patent with authorization announcement number CN220984950U discloses a waterproof Type-C connector, comprising an insulating body, a shielding shell, and a plurality of conductive terminals. The insulating body comprises a base and a tongue extending from the base. The shielding shell is encased on the insulating body. The plurality of conductive terminals are disposed on the insulating body. The shielding shell comprises an inner shell and an outer shell. The inner shell is seamless, the rear end of the inner shell being sealed and mounted with the insulating body. An insertion cavity opening forward is formed between the inner shell and the tongue. The front end of the inner shell comprises a fitting portion, which is fitted with a waterproof ring. The outer shell encases the inner shell and is located behind the waterproof ring. A retaining ring is integrally formed on the outer shell or the inner shell, and the retaining ring abuts against the rear side of the waterproof ring to effectively prevent the waterproof ring from moving backward, thereby maintaining the waterproof ring against the inner side wall of the mounting opening of the chassis, thereby achieving long-term waterproofing and improving waterproof performance.

[0004] However, the aforementioned waterproof Type-C connector only features a waterproof ring at the front end for waterproofing. However, the inner housing and the insulating body are sleeved together, creating a gap between them that allows for the entry of moisture, resulting in a limited waterproofing effect for the waterproof Type-C connector. Furthermore, to prevent the waterproof ring from shifting backward, a retaining ring must be integrally molded into the outer or inner housing, particularly at the front end of the inner housing, which is extremely difficult to manufacture.

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

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a waterproof and simple injection-molded Type-C connector.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solution: the waterproof simple injection-molded Type-C connector includes: an upper terminal module composed of an upper terminal and an upper insulator integrally injection-molded on the upper terminal, a lower terminal module composed of a lower terminal and a lower insulator integrally injection-molded on the lower terminal, a middle iron sheet clamped and fixed between the upper terminal module and the lower terminal module, an insulating seat integrally injection-molded on the upper terminal module and the lower terminal module, and a metal shell sleeved on the outside of the insulating seat, a matching slot is formed between the metal shell and the insulating seat, a waterproof ring is sleeved on the front end of the metal shell, an outer insulating sleeve is also integrally molded on the outside of the metal shell, the outer insulating sleeve also integrally wraps the insulating seat and the rear end of the metal shell, and only the front end of the metal shell is exposed; the first pin portion of the upper terminal and the second pin portion of the lower terminal both extend outside the rear end surface of the outer insulating sleeve, and the front end surface of the outer insulating sleeve and the outer periphery of the front end of the metal shell form a stepped position, the waterproof ring is sleeved in the stepped position, and the rear end of the waterproof ring abuts against the front end surface of the outer insulating sleeve.

[0008] Furthermore, in the above technical solution, a metal bracket is further provided on the outside of the outer insulating sleeve, and legs on both sides of the metal bracket extend downwardly outside the lower end surface of the outer insulating sleeve.

[0009] Furthermore, in the above technical solution, the metal bracket is in the shape of a semi-square frame, and card holes are provided on both sides of the metal bracket; the outer insulating sleeve is provided with a semi-square frame-shaped installation groove, and beveled clips are provided on both sides of the installation groove. The metal bracket is embedded in the installation groove to wrap the upper end face and two side faces of the outer insulating sleeve, and the beveled clips are fixed with the card holes.

[0010] Furthermore, in the above technical solution, the lower end surface of the outer insulating sleeve is a plane, at least two positioning bosses are provided on the rear side of the lower end surface of the outer insulating sleeve, and a pad is provided on the front side of the lower end surface of the outer insulating sleeve, and the lower end surface of the pad is flush with the lower end surface of the first pin portion and the lower end surface of the second pin portion; after the outer insulating sleeve is inserted and positioned into the positioning hole of the PCB board through the positioning bosses, the pad contacts the upper end surface of the PCB board, and the lower end surface of the first pin portion and the lower end surface of the second pin portion contact the solder pads of the PCB board one by one, so that the lower end surface of the outer insulating sleeve forms a gap with the upper end surface of the PCB board to facilitate air communication during reflow soldering.

[0011] Furthermore, in the above technical solution, a stepped notch is also provided at the rear end of the metal shell; bosses are formed on both sides of the rear end of the insulating seat, and a baffle connecting the bosses is also formed on the upper side of the rear end of the insulating seat, the rear end of the metal shell is abutted against the front end surface of the baffle, and the stepped notch is clamped and positioned with the boss; the metal shell is a cylindrical seamless metal shell, or the metal shell is a rounded metal shell, which has a seam, and the outer insulating sleeve integrally wraps the seam.

[0012] Furthermore, in the above technical solution, the upper and lower surfaces of the rear end of the metal shell are respectively stamped with a first positioning bulge and a second positioning bulge protruding from the outside to the inside, and there is no gap between the first positioning bulge and the second positioning bulge and the metal shell, and the upper and lower surfaces of the rear end of the insulating seat are respectively provided with a first positioning groove and a second positioning groove, and the first positioning bulge and the second positioning bulge are respectively pressed into the first positioning groove and the second positioning groove.

[0013] Furthermore, in the above technical solution, the upper surface of the rear end of the metal shell is also formed with a barb protruding from the outside to the inside, and the upper surface of the rear end of the insulating seat is provided with a first card slot, and the barb is inserted into the first card slot to prevent the metal shell from falling forward relative to the insulating seat.

[0014] Furthermore, in the above technical solution, the lower end surface of the upper insulator is provided with a first positioning cylinder and a first positioning circular groove located next to the first positioning cylinder; the upper end surface of the lower insulator is provided with a second positioning cylinder and a second positioning circular groove located next to the second positioning cylinder; the middle iron sheet is provided with a third circular hole and a fourth circular hole. After the upper insulator and the lower insulator are connected to each other up and down, the first positioning cylinder passes downward through the third circular hole and is clamped and fixed with the second positioning circular groove; the second positioning cylinder passes downward through the fourth circular hole and is clamped and fixed with the first positioning circular groove.

[0015] Furthermore, in the above technical solution, the upper end surface of the upper insulator is formed with a circular body with a raised upper end, the insulating seat integrally wraps the outer periphery of the circular body, and the central groove of the circular body is exposed on the upper surface of the insulating seat.

[0016] Furthermore, in the above technical solution, the cross-section of the waterproof ring is rectangular, and the front end face of the waterproof ring protrudes outside the front end face of the metal shell; a groove is provided on the lower end face of the rear side of the outer insulating sleeve, and the first pin portion of the upper terminal and the second pin portion of the lower terminal both pass through the groove and extend outside the outer insulating sleeve, and the groove is also poured with waterproof sealant, which simultaneously wraps the first pin portion of the upper terminal and the second pin portion of the lower terminal.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention is also integrally formed with an outer insulating sleeve on the outside of the metal shell, and the outer insulating sleeve also integrally wraps the insulating seat and the rear end of the metal shell, leaving only the front end of the metal shell exposed, so that the outer insulating sleeve blocks the assembly gap between the metal shell and the insulating seat, thereby improving its own waterproof performance; at the same time, the waterproof ring is arranged in the step formed by the front end face of the outer insulating sleeve and the outer periphery of the front end of the metal shell, and the rear end of the waterproof ring abuts against the front end face of the outer insulating sleeve, so as to also block the gap between the outer insulating sleeve and the metal shell, especially after the Type-C connector and the device panel are installed to squeeze the waterproof ring and deform it, it can cooperate with the outer insulating sleeve to wrap other positions except the slot, and its sealing performance is extremely strong and the waterproof performance is excellent; at the same time, the present invention does not need to bend and form a "retaining ring" at the front end of the metal shell by abutting against the front end face of the outer insulating sleeve, making the metal shell structure simpler and easier to manufacture. Description of the drawings:

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the present invention from another perspective;

[0020] Figure 3 It is an exploded view of the utility model;

[0021] Figure 4 It is a cross-sectional view of the utility model;

[0022] Figure 5 This is a three-dimensional diagram of the utility model after the waterproof ring is disassembled;

[0023] Figure 6 This is an assembly diagram of the metal shell and the insulating seat in the utility model;

[0024] Figure 7 It is a three-dimensional diagram of the metal shell in the utility model;

[0025] Figure 8 It is a three-dimensional diagram of the insulating seat in the utility model. Specific implementation method:

[0026] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0027] See Figure 1-8As shown, a waterproof simple injection-molded Type-C connector includes: an upper terminal module 1 consisting of an upper terminal 11 and an upper insulator 12 integrally injection-molded on the upper terminal 11, a lower terminal module 2 consisting of a lower terminal 21 and a lower insulator 22 integrally injection-molded on the lower terminal 21, a middle iron sheet 3 clamped and fixed between the upper terminal module 1 and the lower terminal module 2, an insulating seat 4 integrally injection-molded on the upper terminal module 1 and the lower terminal module 2, and a metal shell 5 sleeved on the outside of the insulating seat 4, a matching slot 50 being formed between the metal shell 5 and the insulating seat 4, and a waterproof ring 6 being sleeved on the front end of the metal shell 5, which is used to contact the device panel and then seal the gap formed between the Type-C connector and the device panel, thereby achieving the purpose of waterproofing. The above is a conventional structure of a Type-C connector.

[0028] In order to improve the waterproof performance of the Type-C connector itself, the following design is also made: the outside of the metal shell 5 is also integrally formed with an outer insulating sleeve 7, and the outer insulating sleeve 7 also integrally wraps the insulating seat 4 and the rear end of the metal shell 5, leaving only the front end of the metal shell 5 exposed; the first pin portion 111 of the upper terminal 11 and the second pin portion 211 of the lower terminal 21 both extend out of the rear end surface of the outer insulating sleeve 7, and the front end surface of the outer insulating sleeve 7 and the outer periphery of the front end of the metal shell 5 form a stepped position 70, the waterproof ring 6 is arranged in the stepped position 70, and the rear end of the waterproof ring 6 is in contact with the front end surface of the outer insulating sleeve 7. That is to say, the present invention also has an outer insulating sleeve 7 integrally formed on the outside of the metal shell 5, and the outer insulating sleeve 7 also integrally wraps the insulating seat 4 and the rear end of the metal shell 5, leaving only the front end of the metal shell 5 exposed, so that the outer insulating sleeve 7 blocks the assembly gap between the metal shell 5 and the insulating seat 4, thereby improving its own waterproof performance; at the same time, the waterproof ring 6 is arranged in the stepped position 70 formed by the front end face of the outer insulating sleeve 7 and the outer periphery of the front end of the metal shell 5, and the rear end of the waterproof ring 6 abuts against the front end face of the outer insulating sleeve 7, so as to also block the gap between the outer insulating sleeve 7 and the metal shell 5, especially after the Type-C connector and the device panel are installed to squeeze the waterproof ring 6 to deform, it can cooperate with the outer insulating sleeve 7 to wrap other positions except the slot 50, and its sealing performance is extremely strong and the waterproof performance is excellent; at the same time, the present invention does not need to bend the front end of the metal shell 5 to form a "retaining ring" by abutting the front end face of the outer insulating sleeve 7, so that the structure of the metal shell 5 is simpler and easier to manufacture.

[0029] In order to enable the Type-C connector of the present invention to be more stably installed on the PCB board, the following design is also made: a metal bracket 8 is also provided on the outside of the outer insulating sleeve 7, and the legs 81 on both sides of the metal bracket 8 extend downwardly from the lower end surface of the outer insulating sleeve 7. When the Type-C connector is fitted on the PCB board, the first pin portion 111 of the upper terminal 11 and the second pin portion 211 of the lower terminal 21 correspond to the solder pads of the PCB board one by one and are welded and fixed. The legs 81 on both sides of the metal bracket 8 are both inserted downward into the solder pads of the PCB board and fixed by soldering. At this time, the metal bracket 8 is wrapped around the upper end surface and both side surfaces of the outer insulating sleeve 7, fixing the outer insulating sleeve 7 to the PCB board in a manner similar to a binding, ensuring that the Type-C connector can be more stably installed on the PCB board.

[0030] Among them, the metal bracket 8 is in the shape of a semi-square frame, and a card hole 82 is provided on both sides of the metal bracket 8; the outer insulating sleeve 7 is provided with a semi-square frame-shaped installation groove 71, and a bevel card buckle 711 is provided on both sides of the installation groove 71. The metal bracket 8 is embedded in the installation groove 71 to wrap the upper end face and two side faces of the outer insulating sleeve 7, and the bevel card buckle 711 is engaged and fixed with the card hole 82, and its assembly is simple and stable.

[0031] The lower end surface of the outer insulating sleeve 7 is flat, and at least two positioning bosses 72 are provided on the rear side of the lower end surface of the outer insulating sleeve 7. A padding block 73 is provided on the front side of the lower end surface of the outer insulating sleeve 7. The lower end surface of the padding block 73 is flush with the lower end surface of the first pin portion 111 and the lower end surface of the second pin portion 211. When the utility model is fitted and mounted on the PCB board, the lower end surface of the first pin portion 111 and the lower end surface of the second pin portion 211 correspond one-to-one with the solder pads on the upper end surface of the PCB board, and the padding block 73 also contacts the upper end surface of the PCB board, thereby ensuring that the outer insulating sleeve 7 (i.e., the utility model) is assembled with the PCB board more smoothly and with higher parallelism, thereby ensuring that after the utility model is fixed to the PCB board in the later stage, the orientation and position of the slot 50 can accurately reach the predetermined design, thereby ensuring the quality of assembly. At the same time, the outer insulating sleeve 7 is positioned after being inserted into the positioning hole of the PCB board through the positioning boss 72, so as to achieve the positioning purpose. The pad block 73 contacts the upper end surface of the PCB board, and the lower end surface of the first pin portion 111 and the lower end surface of the second pin portion 211 contact the solder pads of the PCB board one by one, so that the lower end surface of the outer insulating sleeve 7 forms a gap with the upper end surface of the PCB board to facilitate air communication during reflow soldering, which also improves the quality of reflow soldering.

[0032] The rear end of the metal shell 5 is also provided with a stepped notch 51; bosses 41 are formed on both sides of the rear end of the insulating seat 4, and a baffle 42 connecting the bosses 41 is also formed on the upper side of the rear end of the insulating seat 4. The rear end of the metal shell 5 abuts against the front end surface of the baffle 42, and the stepped notch 51 is clamped and positioned with the boss 41, thereby ensuring the stability of the assembly structure. In addition, the following design is also made: a barb 54 protruding from the outside to the inside is also formed on the upper surface of the rear end of the metal shell 5, and a first card groove 45 is provided on the upper surface of the rear end of the insulating seat 4. The barb 54 is clamped in the first card groove 45 to prevent the metal shell 5 from falling out forward relative to the insulating seat 4. Furthermore, the upper and lower surfaces of the rear end of the metal shell 5 are respectively stamped with a first positioning bulge 52 and a second positioning bulge 53 protruding from the outside to the inside, and there is no gap between the first positioning bulge 52 and the second positioning bulge 53 and the metal shell 5. The upper and lower surfaces of the rear end of the insulating seat 4 are respectively provided with a first positioning groove 43 and a second positioning groove 44. The first positioning bulge 52 and the second positioning bulge 53 are respectively pressed into the first positioning groove 43 and the second positioning groove 44, thereby ensuring that the metal shell 5 is more stably installed on the insulating seat 4.

[0033] The metal shell 5 is a cylindrical seamless metal shell, or the metal shell 5 is a circular metal shell with a seam. The outer insulating sleeve 7 integrally wraps the seam, which can effectively prevent water vapor from entering the seam and also achieve good waterproof performance.

[0034] The lower end surface of the upper insulator 12 is provided with a first positioning cylinder and a first positioning groove located next to the first positioning cylinder; the upper end surface of the lower insulator 22 is provided with a second positioning cylinder 221 and a second positioning groove 222 located next to the second positioning cylinder 221; the middle iron sheet 3 is provided with a third circular hole 31 and a fourth circular hole 32. After the upper insulator 12 and the lower insulator 22 are connected to each other up and down, the first positioning cylinder passes downward through the third circular hole 31 and is clamped and fixed with the second positioning circular groove 222; the second positioning cylinder 221 passes downward through the fourth circular hole 32 and is clamped and fixed with the first positioning circular groove, so that the middle iron sheet 3, the upper terminal module 1 and the lower terminal module 2 are stably assembled together, and it is also convenient to inject mold the insulating seat 4 on the middle iron sheet 3, the upper terminal module 1 and the lower terminal module 2 in the later stage.

[0035] The upper end surface of the upper insulator 12 is formed with a circular body 121 with a raised upper end. The insulating seat 4 integrally wraps the outer periphery of the circular body 121, and the central groove 122 of the circular body 121 is exposed on the upper surface of the insulating seat 4, thereby ensuring that the assembly structure between the upper insulator 12 and the insulating seat 4 is more stable.

[0036] The cross-section of the waterproof ring 6 is rectangular, and the front end surface of the waterproof ring 6 protrudes from the front end surface of the metal shell 5. The contact area between the waterproof ring 6 and the metal shell 5 of this structure is large, and the friction force is also large, which can to a certain extent avoid the phenomenon of the waterproof ring 6 accidentally falling off the metal shell 5. At the same time, the front end surface of the waterproof ring 6 protrudes from the front end surface of the metal shell 5, so that the waterproof ring 6 has sufficient deformability. When the waterproof ring 6 contacts the device panel, the waterproof ring 6 deforms back and forth, and it can better press between the outer insulating sleeve 7 and the device panel, and its sealing effect is better; a groove 74 is provided on the lower end surface of the rear side of the outer insulating sleeve 7, and the first pin portion 111 of the upper terminal 11 and the second pin portion 211 of the lower terminal 21 both pass through the groove 74 and extend outside the outer insulating sleeve 7. The groove 74 is also filled with waterproof sealant, which simultaneously wraps the first pin portion 111 of the upper terminal 11 and the second pin portion 211 of the lower terminal 21, which can enhance the sealing performance to further improve the waterproof performance.

[0037] In summary, the present invention is further integrated with an outer insulating sleeve 7 on the outside of the metal shell 5, and the outer insulating sleeve 7 also integrally wraps the insulating seat 4 and the rear end of the metal shell 5, leaving only the front end of the metal shell 5 exposed, so that the outer insulating sleeve 7 blocks the assembly gap between the metal shell 5 and the insulating seat 4, thereby improving its own waterproof performance; at the same time, the waterproof ring 6 is sleeved in the stepped position 70 formed by the front end face of the outer insulating sleeve 7 and the outer periphery of the front end of the metal shell 5, and the rear end of the waterproof ring 6 abuts against the front end face of the outer insulating sleeve 7, so as to also block the gap between the outer insulating sleeve 7 and the metal shell 5, especially after the Type-C connector and the device panel are installed to squeeze the waterproof ring 6 to deform, it can cooperate with the outer insulating sleeve 7 to wrap other positions except the slot 50, and its sealing performance is extremely strong and the waterproof performance is excellent; at the same time, the present invention does not need to bend and form a "retaining ring" at the front end of the metal shell 5 by abutting against the front end face of the outer insulating sleeve 7, so that the structure of the metal shell 5 is simpler and easier to manufacture.

[0038] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A waterproof, simple injection-molded Type-C connector, comprising: An upper terminal module (1) is composed of an upper terminal (11) and an upper insulator (12) integrally injection-molded on the upper terminal (11), a lower terminal module (2) is composed of a lower terminal (21) and a lower insulator (22) integrally injection-molded on the lower terminal (21), a middle iron sheet (3) clamped and fixed between the upper terminal module (1) and the lower terminal module (2), an insulating seat (4) integrally injection-molded on the upper terminal module (1) and the lower terminal module (2), and a metal shell (5) sleeved on the outside of the insulating seat (4), wherein a slot (50) is formed between the metal shell (5) and the insulating seat (4), and a waterproof ring (6) is sleeved on the front end of the metal shell (5), characterized in that: The metal shell (5) is also integrally formed with an outer insulating sleeve (7), which also integrally wraps the insulating seat (4) and the rear end of the metal shell (5), leaving only the front end of the metal shell (5) exposed; the first pin portion (111) of the upper terminal (11) and the second pin portion (211) of the lower terminal (21) both extend outside the rear end surface of the outer insulating sleeve (7), and a stepped position (70) is formed between the front end surface of the outer insulating sleeve (7) and the periphery of the front end of the metal shell (5); the waterproof ring (6) is sleeved in the stepped position (70), and the rear end of the waterproof ring (6) abuts against the front end surface of the outer insulating sleeve (7).

2. The waterproof, simple injection-molded Type-C connector according to claim 1, characterized in that: A metal bracket (8) is further provided on the outside of the outer insulating sleeve (7), and legs (81) on both sides of the metal bracket (8) extend downwardly outside the lower end surface of the outer insulating sleeve (7).

3. The waterproof, simple injection-molded Type-C connector according to claim 2, characterized in that: The metal bracket (8) is in the shape of a semi-square frame, and is provided with clamping holes (82) on both sides of the metal bracket (8); the outer insulating sleeve (7) is provided with a mounting groove (71) in the shape of a semi-square frame, and is provided with inclined clamping buckles (711) on both sides of the mounting groove (71); the metal bracket (8) is embedded in the mounting groove (71) to wrap the upper end surface and two side surfaces of the outer insulating sleeve (7), and the inclined clamping buckles (711) are fixedly engaged with the clamping holes (82).

4. A waterproof, simple injection-molded Type-C connector according to any one of claims 1 to 3, characterized in that: The lower end surface of the outer insulating sleeve (7) is a plane, and at least two positioning bosses (72) are provided on the rear side of the lower end surface of the outer insulating sleeve (7). A padding block (73) is provided on the front side of the lower end surface of the outer insulating sleeve (7), and the lower end surface of the padding block (73) is flush with the lower end surface of the first pin portion (111) and the lower end surface of the second pin portion (211). After the outer insulating sleeve (7) is inserted and positioned in the positioning holes of the PCB board through the positioning bosses (72), the padding block (73) contacts the upper end surface of the PCB board, and the lower end surface of the first pin portion (111) and the lower end surface of the second pin portion (211) contact the solder pads of the PCB board in a one-to-one correspondence, so that a gap is formed between the lower end surface of the outer insulating sleeve (7) and the upper end surface of the PCB board to facilitate air communication during reflow soldering.

5. The waterproof, simple injection-molded Type-C connector according to any one of claims 1 to 3, characterized in that: The rear end of the metal shell (5) is also provided with a stepped notch (51); bosses (41) are formed on both sides of the rear end of the insulating seat (4), and a retaining bar (42) connected to the bosses (41) is also formed on the upper side of the rear end of the insulating seat (4); the rear end of the metal shell (5) abuts against the front end surface of the retaining bar (42), and the stepped notch (51) and the bosses (41) are clamped and positioned; the metal shell (5) is a cylindrical seamless metal shell, or the metal shell (5) is a circular metal shell having a seam, and the outer insulating sleeve (7) integrally wraps the seam.

6. The waterproof simple injection molded Type-C connector according to claim 5, characterized in that: The upper and lower surfaces of the rear end of the metal shell (5) are respectively stamped with a first positioning convex bump (52) and a second positioning convex bump (53) protruding from the outside to the inside, and there is no gap between the first positioning convex bump (52) and the second positioning convex bump (53) and the metal shell (5). The upper and lower surfaces of the rear end of the insulating seat (4) are respectively provided with a first positioning groove (43) and a second positioning groove (44), and the first positioning convex bump (52) and the second positioning convex bump (53) are respectively pressed into the first positioning groove (43) and the second positioning groove (44).

7. The waterproof simple injection molded Type-C connector according to claim 6, characterized in that: The upper surface of the rear end of the metal shell (5) is further formed with a barb (54) protruding from the outside to the inside, and the upper surface of the rear end of the insulating seat (4) is provided with a first slot (45), and the barb (54) is inserted into the first slot (45) to prevent the metal shell (5) from falling out forward relative to the insulating seat (4).

8. The waterproof simple injection molded Type-C connector according to claim 4, characterized in that: The lower end surface of the upper insulator (12) is provided with a first positioning cylinder and a first positioning circular groove located beside the first positioning cylinder; the upper end surface of the lower insulator (22) is provided with a second positioning cylinder (221) and a second positioning circular groove (222) located beside the second positioning cylinder (221); the middle iron sheet (3) is provided with a third circular hole (31) and a fourth circular hole (32); after the upper insulator (12) and the lower insulator (22) are butted up and down, the first positioning cylinder passes through the third circular hole (31) downwards and is then clamped and fixed with the second positioning circular groove (222); the second positioning cylinder (221) passes through the fourth circular hole (32) downwards and is then clamped and fixed with the first positioning circular groove.

9. The waterproof simple injection molded Type-C connector according to claim 8, characterized in that: The upper end surface of the upper insulator (12) is formed with a circular ring (121) with a raised upper end, the insulating seat (4) integrally wraps around the outer periphery of the circular ring (121), and the central groove (122) of the circular ring (121) is exposed on the upper surface of the insulating seat (4).

10. The waterproof, simple injection-molded Type-C connector according to any one of claims 1 to 3, characterized in that: The cross section of the waterproof ring (6) is rectangular, and the front end surface of the waterproof ring (6) protrudes outside the front end surface of the metal shell (5); a groove (74) is provided on the lower end surface of the rear side of the outer insulating sleeve (7), and the first pin portion (111) of the upper terminal (11) and the second pin portion (211) of the lower terminal (21) both pass through the groove (74) and extend outside the outer insulating sleeve (7); the groove (74) is also filled with waterproof sealant, and the waterproof sealant simultaneously wraps the first pin portion (111) of the upper terminal (11) and the second pin portion (211) of the lower terminal (21).

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