Grounding waterproof Type-C connector with inner shell and outer shell communicated through laser spot welding

Abstract

The utility model discloses an inner and outer shell laser spot welding communicated grounding waterproof Type-C connector, which comprises an insulating seat module, a metal shell sleeved on the periphery of the insulating seat module and a waterproof ring arranged on the periphery of the front end of the metal shell, and a butt slot is formed between the metal shell and the insulating seat module. The metal shell comprises an inner shell fixedly arranged on the periphery of the insulating base module in a sleeving mode, an inner embedded shell installed on the inner side of an opening in the front end of the inner shell in an embedded mode and fixed to the inner shell through laser welding, and an outer shell wrapping the periphery of the inner shell in a sleeving mode and fixed to the inner shell through laser welding, and the front end of the inner shell is further folded outwards to form an annular baffle protruding outwards. The waterproof ring is integrally fixed to the periphery of the front end of the embedded shell in a secondary injection molding mode, the rear end face of the waterproof ring is attached to the front end face of the baffle, a clamping flange protruding backwards is further formed on the rear side of the waterproof ring, and the clamping flange is further embedded into a gap between the inner side of the front end of the inner shell and the outer side of the front end of the embedded shell. The waterproof LED lamp has extremely high waterproof performance.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to a waterproof Type-C connector with an inner and outer shell laser spot-welded and connected to a ground. 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, granted with publication number CN221574285U, discloses a Type-C connector comprising a primary die-casting module and a secondary die-casting module. The primary die-casting module includes a first terminal block embedded within a primary insulator. The secondary die-casting module, along with the primary die-casting module, forms a secondary die-casting module, whereby the primary insulator and secondary die-casting module are solidified into a single unit. This technical solution addresses the challenges of automated manufacturing, improving production efficiency and enhancing product quality.

[0004] However, the aforementioned Type-C connector is waterproofed by directly attaching a waterproof ring around the front end of the metal shell. This is primarily to prevent water infiltration, achieving waterproofing and improving the waterproofing effect. However, the rear side of the waterproof ring is only in contact with the front end of a crimping member provided on the outer surface of the shell. The crimping member is relatively thin, resulting in a small front end surface. This prevents the waterproof ring from effectively blocking the waterproof ring, resulting in poor stability. During use, when the waterproof ring is squeezed and deformed by docking with the housing, there is a risk that the waterproof ring will move backward, passing over the front end of the crimping member and enveloping it, thereby affecting the sealing and waterproofing effect. In other words, the sealing and waterproofing effect between the Type-C connector and the housing cannot be guaranteed.

[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 Type-C connector with an inner and outer shell laser spot welded and connected to a ground.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: the inner and outer shells are laser spot welded and connected to the grounded waterproof Type-C connector, which includes an insulating seat module, a metal shell sleeved on the outer periphery of the insulating seat module, and a waterproof ring arranged on the outer periphery of the front end of the metal shell. A pair of slots are formed between the metal shell and the insulating seat module. The metal shell includes an inner shell fixedly sleeved on the outer periphery of the insulating seat module, an embedded shell embedded in the inner side of the front end opening of the inner shell and fixed together by laser welding, and an outer shell wrapped around the outer periphery of the inner shell and fixed together by laser welding. The front end of the inner shell is also folded outward to form an outwardly protruding annular baffle. The waterproof ring is integrally fixed to the outer periphery of the front end of the embedded shell by secondary injection molding, and the rear end face of the waterproof ring is in contact with the front end face of the baffle. The rear side of the waterproof ring is also formed with a rearward-protruding embedded flange, which is embedded in the gap between the inner side of the front end of the inner shell and the outer side of the front end of the embedded shell.

[0008] Furthermore, in the above technical solution, the front end portion of the inner shell expands outward to form an expansion portion, and a stepped groove is formed between the inner wall of the expansion portion and the inner wall of the embedded shell. The rear end of the embedded shell is embedded in the stepped groove and fixed together by laser welding, so that the inner wall of the embedded shell is flush with the inner wall of the inner shell, and multiple first laser welding points are formed outside the expansion portion.

[0009] Furthermore, in the above technical solution, the rear end of the embedded shell is provided with several bulges and elastic arms for increasing the insertion and extraction force, the front end of the bulge has an inclined guide surface, the elastic arm extends obliquely from front to rear, and the bulge and elastic arm both protrude from the slot.

[0010] Furthermore, in the above technical solution, the outer surface of the baffle is flush with the outer surface of the waterproof ring.

[0011] Furthermore, in the above technical solution, a step is formed between the rear end of the inner shell and the rear end surface of the insulating seat module, and the step is filled with glue to form a sealant. The pins of all terminals in the insulating seat module pass through the sealant to extend outside the sealant.

[0012] Furthermore, in the above technical solution, the outer shell includes a U-shaped main shell and two connecting plates that are bent outward along both sides of the main shell and distributed horizontally. The main shell is wrapped around the bottom of the inner shell from bottom to top and fixed by laser welding. The PCB board is provided with a mounting notch, and the upper surface of the PCB board is provided with positioning pads on both sides of the mounting notch, and the upper surface of the PCB board is provided with terminal pads on the rear side of the mounting notch.

[0013] Furthermore, in the above technical solution, the main shell includes a main body plate and side plates bent and formed on both sides of the main body plate, and a plurality of reinforcing ribs distributed at intervals are stamped and formed at the connection position between the side plates and the main body plate.

[0014] Furthermore, in the above technical solution, the main shell of the shell is embedded in the mounting notch of the PCB board from top to bottom, and the connecting plate of the shell is against the upper end surface of the PCB board and welded to the positioning pad; the pin portions of all terminals in the insulating seat module correspond one-to-one to the terminal pads on the upper end surface of the PCB board and are welded to them.

[0015] Furthermore, in the above technical solution, the PCB board is also provided with a limiting pad next to the positioning pad, and the connecting plate is also stamped with a limiting solder foot, which is inserted into the limiting solder pad to form a positioning assembly and is fixed by soldering; the connecting plate is also stamped with a convex solder point corresponding to the positioning pad, and the convex solder point is welded and fixed to the positioning pad.

[0016] Furthermore, in the above technical solution, the PCB board is also provided with a first positioning hole next to the positioning pad; the connecting plate is provided with a second positioning hole corresponding to the first positioning hole, and the positioning member is fixedly connected to the casing or base through the first and second positioning holes, so that the Type-C connector is fixed in the casing or base.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention divides the metal shell into three parts, especially the split inner shell structure formed by assembling the embedded shell and the inner shell, which is convenient for folding the front end of the inner shell to form a baffle, so that the baffle is used to block the waterproof ring in the later stage, thereby effectively preventing the waterproof ring from moving backward, ensuring that the waterproof ring is stably positioned at the periphery of the front end of the embedded shell, so that the waterproof ring can better achieve sealing and waterproof performance; that is, when the waterproof ring is squeezed and deformed by docking with the casing during use, the waterproof ring is blocked by the baffle and will not Moving backward allows the waterproof ring to fit tightly against the casing, ensuring a sealed and waterproof effect between the Type-C connector and the casing. In addition, a rearward-protruding embedded flange is formed on the rear side of the waterproof ring, and the embedded flange is embedded in the gap between the inner side of the front end of the inner shell and the outer side of the front end of the embedded shell, thereby ensuring that the waterproof ring can be more stably installed on the outside of the metal shell. The waterproof ring also seals the inner shell and the embedded shell, preventing water vapor from entering, thereby ensuring that the entire metal shell has better waterproof performance and the quality of the present invention. Description of the drawings:

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

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

[0020] Figure 3 It is a cross-sectional view of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the embedded shell in the utility model;

[0022] Figure 5 It is a three-dimensional diagram of the waterproof ring in the utility model;

[0023] Figure 6 It is a three-dimensional exploded view of the utility model;

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

[0025] Figure 8 This is an assembly drawing of the utility model and the PCB board;

[0026] Figure 9 This is an assembly drawing of the utility model and the PCB board from another perspective;

[0027] Figure 10 It is a three-dimensional diagram of the PCB board. Specific implementation method:

[0028] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0029] See Figure 1-10 As shown, a grounded and waterproof Type-C connector with an inner and outer shell laser spot welding connection is provided, which includes an insulating seat module 1, a metal shell 200 sleeved on the outer periphery of the insulating seat module 1, and a waterproof ring 5 arranged on the outer periphery of the front end of the metal shell 200. A pair of slots 100 are formed between the metal shell 200 and the insulating seat module 1. The contact parts of all terminals in the insulating seat module 1 are exposed in the pair of slots 100, which are used to connect with the Type-C plug inserted into the pair of slots 100 to form communication or charging, etc.

[0030] The insulating seat module 1 at least includes an insulating seat and upper and lower terminals fixed in the insulating seat. Its specific assembly structure is the same as that of a conventional Type-C connector, and will not be described in detail here.

[0031] The present invention specifically improves the structure of the metal shell 200 and the assembly structure of the metal shell 200 and the waterproof ring 5, as follows:

[0032] The metal shell 200 includes an inner shell 2 fixedly mounted on the outer periphery of the insulating seat module 1, an embedded shell 3 embedded in the inner side of the front end opening of the inner shell 2 and fixed together by laser welding, and an outer shell 4 wrapped around the outer periphery of the inner shell 2 and fixed together by laser welding. The front end of the inner shell 2 is also folded outward to form an outwardly protruding annular baffle 21. The waterproof ring 5 is integrally fixed to the outer periphery of the front end of the embedded shell 3 by secondary injection molding, and the rear end face of the waterproof ring 5 is in contact with the front end face of the baffle 21. The rear side of the waterproof ring 5 is also formed with a rearwardly protruding embedded flange 51, and the embedded flange 51 is also embedded in the gap between the inner side of the front end of the inner shell 2 and the outer side of the front end of the embedded shell 3. That is to say, the present invention divides the metal shell 200 into three parts, especially the split inner shell structure formed by assembling the embedded shell 3 and the inner shell 2, which is convenient for folding the front end of the inner shell 2 to form a baffle 21, so that the baffle 21 is used to block the waterproof ring 5 in the later stage, thereby effectively preventing the waterproof ring 5 from moving backward, ensuring that the waterproof ring 5 is stably positioned at the periphery of the front end of the embedded shell 3, so that the waterproof ring 5 can better achieve sealing and waterproof performance; that is, when the waterproof ring is docked with the casing during use and is squeezed and deformed, the waterproof ring 5 is blocked by the baffle and will not move backward, so that the waterproof ring can be tightly It fits snugly with the casing to ensure a sealed and waterproof effect between the Type-C connector and the casing; in addition, a rearward-protruding embedded flange 51 is formed on the rear side of the waterproof ring 5, and the embedded flange 51 is also embedded in the gap between the inner side of the front end of the inner shell 2 and the outer side of the front end of the embedded shell 3, thereby ensuring that the waterproof ring 5 can be more stably installed on the outside of the metal shell 200, and the waterproof ring 5 also seals the inner shell 2 and the embedded shell 3, so that water vapor will not enter, thereby ensuring that the entire metal shell 200 has better waterproof performance and the quality of the present invention.

[0033] As a preferred embodiment, the outer surface of the baffle 21 is flush with the outer surface of the waterproof ring 5, which makes the appearance more beautiful and the baffle 21 can better block the waterproof ring 5. Of course, the outer surface of the baffle 21 can be slightly higher than the outer surface of the waterproof ring 5, or slightly lower than the outer surface of the waterproof ring 5. In both cases, the waterproof ring 5 can be well blocked, but the appearance is not so beautiful.

[0034] The inner wall of the embedded shell 3 is flush with the inner wall of the inner shell 2, so as to form a better quality mating slot 100 and facilitate mating with the Type-C plug.

[0035] The specific assembly structure of the inner shell 2 and the embedded shell 3 is as follows: the front end of the inner shell 2 expands outward to form an expansion portion 22, and a stepped groove 221 is formed between the inner wall of the expansion portion 22 and the inner wall of the embedded shell 3. The rear end of the embedded shell 3 is embedded in the stepped groove 221 to form positioning, and is later fixed together by laser welding so that the inner wall of the embedded shell 3 is flush with the inner wall of the inner shell 2, and a plurality of first laser welding points 222 are formed outside the expansion portion 22. In other words, the specific assembly structure of the inner shell 2 and the embedded shell 3 is extremely simple, and the assembly structure is stable. It can also ensure that the inner wall of the embedded shell 3 is flush with the inner wall of the inner shell 2, so as to form a better quality docking slot 100 and facilitate docking with the Type-C plug.

[0036] In addition, in order to increase the plugging and unplugging force of the present invention with the Type-C plug, the following design is added: the rear end of the embedded shell 3 is provided with a plurality of convex bumps 31 and elastic arms 32 for increasing the plugging and unplugging force, the front end of the convex bump 31 has an inclined guide surface 311, and the elastic arm 32 extends obliquely from front to rear, and the convex bump 31 and the elastic arm 32 both protrude from the socket 100. The convex bump 31 with the inclined guide surface 311 and the elastic arm 32 extending obliquely from front to rear facilitate the smooth insertion of the Type-C plug into the socket 100 and improve the alignment, thereby ensuring a stable assembly with the Type-C plug and achieving a stable electrical conduction function.

[0037] In order to improve the waterproof performance, the following improvements have been made, as follows:

[0038] A step 23 is formed between the rear end of the inner shell 2 and the rear end surface of the insulating seat module 1. The step 23 is filled with glue to form a glue seal 24. The pins of all terminals in the insulating seat module 1 pass through the glue seal 24 to extend outside the glue seal 24. The following can seal the assembly gap formed between the rear end of the inner shell 2 and the rear end surface of the insulating seat module 1, ensuring excellent waterproof performance. At the same time, it can also seal the assembly gap of the pin part of the terminal, thereby improving the waterproof performance of the pin part of the terminal.

[0039] The outer shell 4 includes a U-shaped main shell 41 and two connecting plates 42 that are bent outward and horizontally distributed along both sides of the main shell 41. The main shell 41 is wrapped around the bottom of the inner shell 2 from bottom to top and fixed by laser welding. The PCB board 6 is provided with a mounting notch 61. The upper end surface of the PCB board 6 is provided with positioning pads 62 on both sides of the mounting notch 61. The upper end surface of the PCB board 6 is provided with terminal pads 63 on the rear side of the mounting notch 61. Among them, the main shell 41 of the shell 4 is embedded and installed in the installation gap 61 of the PCB board 6 from top to bottom, and the connecting plate 42 of the shell 4 is against the upper end surface of the PCB board 6 and is welded and fixed with the positioning pad 62; the pin portions of all terminals in the insulating seat module 1 correspond one-to-one with the terminal pads 63 on the upper end surface of the PCB board 6 and are welded and fixed, that is, the shell 4 wraps the inner shell 2 and the insulating seat module 1 from bottom to top and positions them in the PCB board 6, and the pin portions of all terminals in the insulating seat module 1 correspond one-to-one with the terminal pads 63 on the upper end surface of the PCB board 6 from top to bottom and are welded and fixed, and the entire connector is fixed in the installation gap 61 of the PCB board 6 by fixing it up and down, thereby ensuring that the assembly structure is extremely stable.

[0040] The main shell 41 includes a main body plate 411 and side plates 412 bent on both sides of the main body plate 411. The connection position between the side plates 412 and the main body plate 411 is stamped with multiple spaced reinforcing ribs 413. The reinforcing ribs 413 can ensure the structural strength of the entire main shell 41. They can be stably clamped and fixed to the outer surface of the inner shell, and their assembly structure is more stable and firm.

[0041] The PCB board 6 is further provided with a limiting pad 64 adjacent to the positioning pad 62. The connecting plate 42 is further stamped with a limiting solder foot 421, which is inserted into the limiting pad 64 to form a positioning assembly and secured by soldering. The connecting plate 42 is further stamped with a convex solder point 422 corresponding to the positioning pad 62. The convex solder point is soldered to the positioning pad 62, thereby enabling the housing 4 to form a highly stable assembly structure with the PCB board 6. Furthermore, the PCB board 6 is further provided with a first positioning hole 65 adjacent to the positioning pad 62. The connecting plate 42 is further provided with a second positioning hole 420 corresponding to the first positioning hole 65. A positioning member passes through these first and second positioning holes and is fixedly connected to the housing or chassis, thereby securing the Type-C connector to the housing or chassis and ensuring a more stable assembly structure.

[0042] In summary, the present invention divides the metal shell 200 into three parts, especially the split inner shell structure formed by assembling the inner shell 3 and the inner shell 2, which is convenient for folding the front end of the inner shell 2 to form a baffle 21, so that the baffle 21 is used to block the waterproof ring 5 in the later stage, thereby effectively preventing the waterproof ring 5 from moving backward, ensuring that the waterproof ring 5 is stably positioned at the outer periphery of the front end of the inner shell 3, so that the waterproof ring 5 can better achieve sealing and waterproof performance; that is, when the waterproof ring is squeezed and deformed by docking with the casing during use, the waterproof ring 5 is blocked by the baffle and will not move backward, so that the waterproof ring can be tightly It fits snugly with the casing to ensure a sealed and waterproof effect between the Type-C connector and the casing; in addition, a rearward-protruding embedded flange 51 is formed on the rear side of the waterproof ring 5, and the embedded flange 51 is also embedded in the gap between the inner side of the front end of the inner shell 2 and the outer side of the front end of the embedded shell 3, thereby ensuring that the waterproof ring 5 can be more stably installed on the outside of the metal shell 200, and the waterproof ring 5 also seals the inner shell 2 and the embedded shell 3, so that water vapor will not enter, thereby ensuring that the entire metal shell 200 has better waterproof performance and the quality of the present invention.

[0043] 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 Type-C connector with an inner and outer shell laser spot welding connection and grounding, comprising an insulating seat module (1), a metal shell (200) sleeved on the outer periphery of the insulating seat module (1), and a waterproof ring (5) arranged on the outer periphery of the front end of the metal shell (200), wherein a slot (100) is formed between the metal shell (200) and the insulating seat module (1), and characterized in that: The metal shell (200) comprises an inner shell (2) fixedly mounted on the outer periphery of the insulating seat module (1), an embedded shell (3) embedded in the inner side of the front end opening of the inner shell (2) and fixed together by laser welding, and an outer shell (4) wrapped around the outer periphery of the inner shell (2) and fixed together by laser welding. The front end of the inner shell (2) is also folded outward to form an outwardly protruding annular baffle (21). The waterproof ring (5) is fixed to the outer periphery of the front end of the embedded shell (3) in an integral manner by secondary injection molding, and the rear end face of the waterproof ring (5) is in contact with the front end face of the baffle (21). The rear side of the waterproof ring (5) is also formed with a rearwardly protruding embedded flange (51), and the embedded flange (51) is also embedded in the gap between the inner side of the front end of the inner shell (2) and the outer side of the front end of the embedded shell (3).

2. The waterproof Type-C connector with inner and outer shells laser spot welded and connected to each other, according to claim 1, characterized in that: The front end portion of the inner shell (2) expands outward to form an expansion portion (22), a stepped groove (221) is formed between the inner wall of the expansion portion (22) and the inner wall of the embedded shell (3), the rear end of the embedded shell (3) is embedded in the stepped groove (221) and fixed together by laser welding, so that the inner wall of the embedded shell (3) is flush with the inner wall of the inner shell (2), and a plurality of first laser welding points (222) are formed outside the expansion portion (22).

3. The waterproof Type-C connector with inner and outer shells laser spot welded and connected to each other, according to claim 2, characterized in that: The rear end of the embedded shell (3) is provided with a plurality of convex hulls (31) and elastic arms (32) for increasing the insertion and extraction force; the front end of the convex hull (31) has an inclined guide surface (311); the elastic arms (32) extend obliquely from front to rear; and both the convex hull (31) and the elastic arms (32) protrude from the slot (100).

4. The waterproof Type-C connector with inner and outer shells laser spot welded and connected to each other, according to claim 1, characterized in that: The outer surface of the baffle (21) is flush with the outer surface of the waterproof ring (5).

5. A waterproof Type-C connector with inner and outer shells laser spot welded and grounded according to any one of claims 1 to 4, characterized in that: A step (23) is formed between the rear end of the inner shell (2) and the rear end surface of the insulating seat module (1), and the step (23) is filled with glue to form a glue seal (24). The pins of all terminals in the insulating seat module (1) pass through the glue seal (24) to extend outside the glue seal (24).

6. A waterproof Type-C connector with inner and outer shells laser spot welded and grounded according to any one of claims 1 to 4, characterized in that: The outer shell (4) comprises a U-shaped main shell (41) and two connecting plates (42) bent outwardly along both sides of the main shell (41) and distributed horizontally. The main shell (41) is wrapped around the bottom of the inner shell (2) from bottom to top and fixed by laser welding. The PCB board (6) is provided with a mounting notch (61). The upper end surface of the PCB board (6) is provided with positioning pads (62) on both sides of the mounting notch (61), and the upper end surface of the PCB board (6) is provided with terminal pads (63) on the rear side of the mounting notch (61).

7. The waterproof Type-C connector with inner and outer shells laser spot welded and grounded according to claim 6, characterized in that: The main shell (41) includes a main body plate (411) and side plates (412) bent and formed on both sides of the main body plate (411). The connection position between the side plates (412) and the main body plate (411) is stamped with multiple reinforcing ribs (413) distributed at intervals.

8. The waterproof Type-C connector with inner and outer shells laser spot welded and grounded according to claim 7, characterized in that: The main shell (41) of the housing (4) is embedded in the mounting notch (61) of the PCB (6) from top to bottom, and the connecting plate (42) of the housing (4) abuts against the upper end surface of the PCB (6) and is welded and fixed to the positioning pad (62); the pin portions of all the terminals in the insulating seat module (1) correspond one-to-one to the terminal pads (63) on the upper end surface of the PCB (6) and are welded and fixed.

9. The waterproof Type-C connector with inner and outer shells laser spot welded and grounded according to claim 8, characterized in that: The PCB board (6) is further provided with a limiting pad (64) beside the positioning pad (62); the connecting plate (42) is further stamped to form a limiting solder foot (421); the limiting solder foot (421) is inserted into the limiting pad (64) to form a positioning assembly and is fixed by soldering; the connecting plate (42) is further stamped to form a convex solder point (422) corresponding to the positioning pad (62); the convex solder point is fixed to the positioning pad (62) by soldering.

10. The waterproof Type-C connector with inner and outer shells laser spot welded and grounded according to claim 9, characterized in that: The PCB board (6) is further provided with a first positioning hole (65) beside the positioning pad (62); the connecting plate (42) is provided with a second positioning hole (420) corresponding to the first positioning hole (65); the positioning member passes through the first and second positioning holes and is fixedly connected to the housing or the base, so that the Type-C connector is fixed in the housing or the base.

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