Type-C connector with inner shell and outer shell precisely positioned and welded

Abstract

The utility model discloses a Type-C connector with an inner shell and an outer shell precisely positioned and welded, which comprises a connector main body, the inner shell and the outer shell, at least one first fixing pin is formed on the outer side of the rear end of the inner shell through punching and bending, at least one second fixing pin is formed on the outer side of the outer shell, at least two positioning holes are formed in the upper end surface of the inner shell, and the inner shell is provided with a positioning hole. The inner side of the shell is provided with at least two positioning parts protruding downwards, and the positioning parts are pressed into the positioning holes from top to bottom to form positioning; the outer shell and the inner shell are fixed through laser welding, and a plurality of laser welding points are formed on the outer shell. According to the utility model, the problem that the outer shell and the inner shell are mutually inclined can be effectively avoided, the outer shell and the inner shell can be fixed through laser welding in the later period, the welding quality and accuracy are ensured, the first and second fixing pins can be ensured to be smoothly pressed into the first and second bonding pads of the PCB, and the production efficiency is improved. And the mounting quality and efficiency of the LED lamp and the PCB are ensured.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to a Type-C connector with an inner shell and an outer shell precisely positioned and welded. 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] The invention patent application with application publication number 202410425788.4 discloses a TYPE-C connector. The TYPE-C connector includes a connector body, the connector body includes a shell assembly and a terminal assembly arranged in the shell assembly, the shell assembly includes a main shell formed by one-time stretching and a metal shell connected to the outside of the main shell, the inner side of the main shell has an inner ring integrally formed with the main shell, the main shell has a first end and a second end that are opposite and through, the inner ring extends from the second end to the first end, and the second end has a connecting wall arranged around the inner ring, the connecting wall is integrally connected between the inner wall of the main shell and the inner ring, and the inner ring is sleeved on the terminal assembly.

[0004] The above-mentioned TYPE-C connector has the following shortcomings: when the metal shell and the main shell of the patent application (202410425788.4) are assembled with each other, there is no positioning between the metal shell and the main shell, so that precise welding cannot be achieved in the later stage, and the metal shell and the main shell are prone to being skewed with each other. At the same time, the position of the first and second fixed feet of the metal shell relative to the main shell cannot be guaranteed, which affects the later insertion and welding of the first and second fixed feet with the PCB board.

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

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a Type-C connector with an inner shell and an outer shell that can be precisely positioned and welded.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: the Type-C connector with precise positioning and welding of the inner shell and the outer shell includes a connector body, an inner shell arranged on the periphery of the connector body, and an outer shell sleeved on the outside of the inner shell. The outer side of the rear end of the inner shell is stamped and bent to form at least one first fixing foot, and the outer side of the outer shell is molded with at least one second fixing foot. The upper end surface of the inner shell is provided with at least two positioning holes, and the inner side of the outer shell is provided with at least two downwardly protruding positioning parts, which are pressed into the positioning holes from top to bottom to form positioning; the outer shell and the inner shell are fixed by laser welding, and multiple laser welding points are formed on the outer shell.

[0008] Furthermore, in the above technical solution, the height of the positioning portion is less than or equal to the depth of the positioning hole, so that the lower end surface of the positioning portion does not pass through the positioning hole and protrude outside the inner side surface of the shell.

[0009] Furthermore, in the above technical solution, the positioning portion is a circular convex column formed by stamping the inner shell downward along its upper end surface, a guide surface is provided on the outer periphery of the lower end of the circular convex column, and a circular groove is formed on the upper end surface of the inner shell at the position corresponding to the circular convex column; the positioning hole is a circular hole.

[0010] Furthermore, in the above technical solution, the positioning portion is a strip-shaped protrusion formed by stamping the inner shell downward along its upper end surface, and guide inclined surfaces are provided on both sides of the lower end of the strip-shaped protrusion, and a strip-shaped groove is formed at the position of the upper end surface of the inner shell corresponding to the strip-shaped protrusion; the positioning hole is a strip-shaped hole.

[0011] Furthermore, in the above technical solution, the upper inner wall of the inner shell is formed with a first convex bump for increasing the plugging and unplugging force, and the first convex bump is located next to the circular hole, and the lower inner wall of the inner shell is formed with a first elastic arm extending from front to rear for increasing the plugging and unplugging force.

[0012] Furthermore, in the above technical solution, a second convex hump is formed on the lower inner wall of the inner shell.

[0013] Furthermore, in the above technical solution, a stop bar and a first limiting groove located in front of the stop bar and a second limiting groove located in front of the first limiting groove are provided on the rear side of the lower end surface of the connector body; a top plate extending backward is formed on the rear side of the lower end of the inner shell, and the rear end of the top plate is torn and bent upward to form a first limiting pressing piece, and the rear end of the top plate abuts against the inner side surface of the stop bar, and the first limiting pressing piece is pressed into the first limiting groove for positioning, and the first limiting protrusion stamped upward on the lower end surface of the inner shell is pressed into the second limiting groove.

[0014] Furthermore, in the above technical solution, a third limiting groove and a fourth limiting groove located in front of the third limiting groove are provided on the rear side of the upper end surface of the connector body; a second limiting pressing piece and a second limiting protrusion located in front of the second limiting pressing piece are formed on the rear side of the upper end of the inner shell, the second limiting pressing piece is pressed into the third limiting groove for positioning, and the second limiting protrusion is pressed into the fourth limiting groove.

[0015] Furthermore, in the above technical solution, tensioning positioning ribs are provided on both side surfaces of the rear end of the connector body, and an inclined surface is provided on the front end of the tensioning positioning ribs; the inner shell is a rounded structure, and its rounded seam is exposed on the upper end surface of the inner shell, and the outer shell also covers the rounded seam.

[0016] Furthermore, in the above technical solution, the front end face of the inner shell is flush with the front end face of the outer shell, and the tongue plate portion at the front end of the connector body protrudes beyond the front end face of the inner shell; the Type-C connector is installed in the notch opened at the front end of the PCB board, and the upper and lower parts of the Type-C connector protrude beyond the upper and lower end faces of the PCB board respectively, and the first fixing foot and the second fixing foot can be smoothly pressed into the first solder pad and the second solder pad of the PCB board from top to top and fixed by soldering.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention is respectively provided with corresponding positioning holes and positioning parts on the inner shell and the outer shell, so that after the outer shell is installed on the outside of the inner shell, the positioning part is pressed into the positioning hole from top to bottom to form positioning, thereby ensuring that the outer shell is accurately installed on the outer surface of the inner shell, thereby effectively avoiding the problem of the outer shell and the inner shell being skewed to each other, and at the same time facilitating the later fixation between the outer shell and the inner shell by laser welding, ensuring the welding quality and accuracy, and also ensuring that the relative position of the first fixing foot of the inner shell and the second fixing foot of the outer shell meets the predetermined requirements, so that the first fixing foot and the second fixing foot can be smoothly pressed into the first soldering pad and the second soldering pad of the PCB board from top to top in the later stage, and fixed by soldering, thereby ensuring the installation quality and efficiency of the present invention and the PCB board. Description of the drawings:

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

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

[0020] Figure 3 This is a three-dimensional diagram of the first embodiment of the present invention from a third viewing angle;

[0021] Figure 4 This is a three-dimensional exploded view of the first embodiment of the present utility model;

[0022] Figure 5 This is a three-dimensional diagram of the housing in the first embodiment of the present utility model;

[0023] Figure 6 This is a three-dimensional diagram of the inner shell in the first embodiment of the present utility model;

[0024] Figure 7 This is a three-dimensional diagram of the connector body in the first embodiment of the present utility model;

[0025] Figure 8 This is an assembly diagram of the first embodiment of the present invention and a PCB board;

[0026] Figure 9 This is an assembly diagram of the first embodiment of the present invention and the PCB board from another perspective;

[0027] Figure 10 It is a three-dimensional diagram of the second embodiment of the present utility model;

[0028] Figure 11 This is a three-dimensional diagram of the housing in the second embodiment of the present utility model;

[0029] Figure 12 This is a three-dimensional exploded view of the second embodiment of the present utility model;

[0030] Figure 13 This is an assembly diagram of the second embodiment of the present invention and a PCB board. Specific implementation method:

[0031] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0032] Example 1:

[0033] See Figure 1-9 The figure shows a Type-C connector with precisely positioned inner and outer shells welded together. The connector comprises a connector body 1, an inner shell 2 disposed on the periphery of the connector body 1, and an outer shell 3 sleeved on the outside of the inner shell 2. The outer rear end of the inner shell 2 is stamped and bent to form at least one first fixing leg 21, and the outer side of the outer shell 3 is molded with at least one second fixing leg 31. The Type-C connector is installed in a notch 41 provided at the front end of a PCB board 4, and the upper and lower portions of the Type-C connector protrude from the upper and lower end surfaces of the PCB board 4, respectively. The first fixing leg 21 and the second fixing leg 31 can both be smoothly pressed from top to bottom into the first solder pad 42 and the second solder pad 43 of the PCB board 4 and fixed by soldering. In other words, the Type-C connector is installed on the PCB board 4 in a sunken manner, which can reduce the thickness after installation to a limited extent to meet the installation requirements of thickness space correction.

[0034] In order to enable precise positioning and welding of the inner shell and the outer shell, the present invention has made the following design: at least two positioning holes are provided on the upper end face of the inner shell 2, and at least two downwardly protruding positioning parts are provided on the inner side of the outer shell 3, and the positioning parts are pressed into the positioning holes from top to bottom to form positioning; the outer shell 3 and the inner shell 2 are fixed by laser welding, and a plurality of laser welding points 30 are formed on the outer shell 3. That is to say, the utility model is respectively provided with corresponding positioning holes and positioning parts on the inner shell 2 and the outer shell 3, so that after the outer shell 3 is wrapped and installed on the outside of the inner shell 2, the positioning part is pressed into the positioning hole from top to bottom to form positioning, thereby ensuring that the outer shell is accurately installed on the outer surface of the inner shell, thereby effectively avoiding the problem of the outer shell 3 and the inner shell 2 being skewed to each other, and at the same time facilitating the later fixation between the outer shell 3 and the inner shell 2 by laser welding, ensuring the welding quality and accuracy, and also ensuring that the relative position of the first fixing foot 21 of the inner shell 2 and the second fixing foot 31 of the outer shell 3 meets the predetermined requirements, so that the first fixing foot 21 and the second fixing foot 31 can be smoothly pressed into the first soldering pad 42 and the second soldering pad 43 of the PCB board 4 from top to top in the later stage, and fixed by soldering, thereby ensuring the installation quality and efficiency of the utility model and the PCB board.

[0035] Among them, the height of the positioning portion is less than or equal to the depth of the positioning hole, so that the lower end surface of the positioning portion will not pass through the positioning hole and extend outside the inner side surface of the shell 3. In other words, the positioning portion is completely accommodated in the positioning hole, so that the design of the positioning portion will not affect the subsequent insertion of the Type-C plug.

[0036] In the first embodiment, the positioning hole is a circular hole 22. The positioning portion is a circular protrusion 32 formed by stamping the inner shell 2 downward along its upper end surface. A guide surface 321 is provided on the outer periphery of the lower end of the circular protrusion 32, and a circular groove 322 is formed on the upper end surface of the inner shell 2 at a position corresponding to the circular protrusion 32. The guide surface 321 has a good guiding effect, which can guide the circular protrusion 32 to be quickly and smoothly inserted into the circular hole 22, thereby improving assembly efficiency and reducing assembly difficulty.

[0037] The upper inner wall of the inner shell 2 is formed with a first bump 24, located next to the circular hole 22, to increase insertion and removal force. The lower inner wall of the inner shell 2 is formed with a first elastic arm 25, extending from front to back, to increase insertion and removal force. When a Type-C plug is inserted into the connector body 1, both the first bump 24 and the first elastic arm 25 contact the Type-C plug, thereby increasing insertion and removal force and, to a certain extent, effectively preventing the Type-C plug from accidentally detaching from the connector body 1.

[0038] The rear side of the lower end surface of the connector body 1 is provided with a stop bar 101 and a first limiting groove 102 located in front of the stop bar 101, and a second limiting groove 103 located in front of the first limiting groove 102; the rear side of the lower end of the inner shell 2 is formed with a top plate 28 extending backward, and the rear end of the top plate 28 is torn and bent upward to form a first limiting pressing piece 281, and the rear end of the top plate 28 abuts against the inner side surface of the stop bar 101, thereby realizing the positioning of the inner shell 2 and the connector body 1, ensuring the assembly accuracy of the relative positions of the two, the first limiting pressing piece 281 is pressed into the first limiting groove 102 for positioning, and the first limiting protrusion 201 stamped upward on the lower end surface of the inner shell 2 is pressed into the second limiting groove 103, thereby ensuring that the inner shell 2 and the connector body 1 form a stable assembly. Furthermore, a third limiting groove 104 and a fourth limiting groove 105 located in front of the third limiting groove 104 are provided on the rear side of the upper end surface of the connector body 1; a second limiting pressing piece 202 and a second limiting protrusion 203 located in front of the second limiting pressing piece 202 are formed on the rear side of the upper end of the inner shell 2, and the second limiting pressing piece 202 is pressed into the third limiting groove 104 for positioning, and the second limiting protrusion 203 is pressed into the fourth limiting groove 105, thereby further ensuring that the inner shell 2 and the connector body 1 form a stable assembly.

[0039] The rear end of the connector body 1 is provided with tensioning and positioning ribs 106 on both sides, and the front end of the tensioning and positioning ribs 106 is provided with an inclined surface 107;

[0040] The inner shell 2 is a circular structure, and its circular seam 204 is exposed on the upper end surface of the inner shell 2. The outer shell 3 also covers the circular seam 204, which can effectively prevent the circular seam 204 from being exposed. At the same time, when the outer shell 3 and the inner shell 2 are laser welded, the laser welding points 30 formed are distributed on both sides of the circular seam 204, thereby ensuring that the inner shell 2 forms a more stable annular structure.

[0041] The front end face of the inner shell 2 is flush with the front end face of the outer shell 3, and the tongue plate 11 at the front end of the connector body 1 partially protrudes beyond the front end face of the inner shell 2, forming a shortened Type-C connector, which not only reduces the material of the inner shell 2 and the outer shell 3 and reduces the manufacturing cost, but also facilitates the insertion of the Type-C plug and improves the convenience of use.

[0042] To sum up, the utility model is respectively provided with corresponding positioning holes and positioning parts on the inner shell 2 and the outer shell 3, so that after the outer shell 3 is wrapped and installed on the outside of the inner shell 2, the positioning part is pressed into the positioning hole from top to bottom to form positioning, thereby ensuring that the outer shell is accurately installed on the outer surface of the inner shell, thereby effectively avoiding the problem of the outer shell 3 and the inner shell 2 being skewed to each other, and at the same time facilitating the later fixation between the outer shell 3 and the inner shell 2 by laser welding, ensuring the welding quality and accuracy, and also ensuring that the relative position of the first fixing foot 21 of the inner shell 2 and the second fixing foot 31 of the outer shell 3 meets the predetermined requirements, so that the first fixing foot 21 and the second fixing foot 31 can be smoothly pressed into the first soldering pad 42 and the second soldering pad 43 of the PCB board 4 from top to top in the later stage, and fixed by soldering, thereby ensuring the installation quality and efficiency of the utility model and the PCB board.

[0043] Example 2:

[0044] Combine Figure 10-13 As shown, the difference between this second embodiment and the first embodiment described above is that the positioning portion is a strip-shaped protrusion 33 formed by stamping the inner shell 2 downward along its upper end surface. Both sides of the lower end of the strip-shaped protrusion 33 are provided with guiding slopes 331, and a strip-shaped groove 332 is formed on the upper end surface of the inner shell 2 at a position corresponding to the strip-shaped protrusion 33; the positioning hole is a strip-shaped hole 23. The guiding slope 331 has a good guiding effect, which can guide the strip-shaped protrusion 33 to be quickly and smoothly inserted into the strip-shaped hole 23, thereby improving assembly efficiency and reducing assembly difficulty. The lower inner wall of the inner shell 2 is formed with a second protrusion 26. When the Type-C plug is inserted into the connector body 1, the second protrusion 26 contacts the Type-C plug, thereby increasing the insertion and removal force, and to a certain extent, effectively preventing the Type-C plug from accidentally detaching from the connector body 1.

[0045] In addition to the above, the other structures of the second embodiment are basically the same as those of the first embodiment, and can achieve the same technical effects, which will not be described in detail here.

[0046] 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 Type-C connector with an inner shell and an outer shell precisely positioned and welded, comprising a connector body (1), an inner shell (2) arranged on the periphery of the connector body (1), and an outer shell (3) sleeved on the outside of the inner shell (2), wherein the outer side of the rear end of the inner shell (2) is stamped and bent to form at least one first fixing leg (21), and the outer side of the outer shell (3) is molded with at least one second fixing leg (31), characterized in that: The upper end surface of the inner shell (2) is provided with at least two positioning holes, and the inner side of the outer shell (3) is provided with at least two downwardly protruding positioning parts, and the positioning parts are pressed into the positioning holes from top to bottom to form positioning; the outer shell (3) and the inner shell (2) are fixed by laser welding, and a plurality of laser welding points (30) are formed on the outer shell (3).

2. The Type-C connector with precise positioning and welding of the inner shell and the outer shell according to claim 1, characterized in that: The height of the positioning portion is less than or equal to the depth of the positioning hole, so that the lower end surface of the positioning portion will not pass through the positioning hole and extend outside the inner side surface of the shell (3).

3. The Type-C connector with precise positioning and welding of the inner shell and the outer shell according to claim 2, characterized in that: The positioning portion is a circular convex column (32) formed by punching the inner shell (2) downward along its upper end surface; a guide surface (321) is provided on the periphery of the lower end of the circular convex column (32); and a circular groove (322) is formed on the upper end surface of the inner shell (2) at a position corresponding to the circular convex column (32); and the positioning hole is a circular hole (22).

4. The Type-C connector with precise positioning and welding of the inner shell and the outer shell according to claim 2, characterized in that: The positioning portion is a strip-shaped convex portion (33) formed by punching the inner shell (2) downward along its upper end surface, and both sides of the lower end of the strip-shaped convex portion (33) are provided with guiding inclined surfaces (331), and a strip-shaped groove (332) is formed at a position corresponding to the strip-shaped convex portion (33) on the upper end surface of the inner shell (2); the positioning hole is a strip-shaped hole (23).

5. The Type-C connector with precise positioning and welding of the inner shell and the outer shell according to claim 3, characterized in that: The upper inner wall of the inner shell (2) is formed with a first convex bump (24) for increasing the insertion and extraction force, and the first convex bump (24) is located beside the circular hole (22). The lower inner wall of the inner shell (2) is formed with a first elastic arm (25) extending from front to rear for increasing the insertion and extraction force.

6. The Type-C connector with precise positioning and welding of the inner shell and the outer shell according to claim 4, characterized in that: A second convex bump (26) is formed on the lower inner wall of the inner shell (2).

7. A Type-C connector with an inner shell and an outer shell precisely positioned and welded according to any one of claims 1 to 6, characterized in that: The rear side of the lower end surface of the connector body (1) is provided with a stop bar (101), a first limiting groove (102) located in front of the stop bar (101), and a second limiting groove (103) located in front of the first limiting groove (102); the rear side of the lower end of the inner shell (2) is formed with a top plate (28) extending backward, the rear end of the top plate (28) is torn and bent upward to form a first limiting pressing piece (281), the rear end of the top plate (28) is against the inner side surface of the stop bar (101), the first limiting pressing piece (281) is pressed into the first limiting groove (102) for positioning, and the first limiting protrusion (201) punched upward on the lower end surface of the inner shell (2) is pressed into the second limiting groove (103).

8. The Type-C connector with precise positioning and welding of the inner shell and the outer shell according to claim 7, characterized in that: A third limiting groove (104) and a fourth limiting groove (105) located in front of the third limiting groove (104) are provided on the rear side of the upper end surface of the connector body (1); a second limiting pressing piece (202) and a second limiting protrusion (203) located in front of the second limiting pressing piece (202) are formed on the rear side of the upper end of the inner shell (2); the second limiting pressing piece (202) is pressed into the third limiting groove (104) for positioning, and the second limiting protrusion (203) is pressed into the fourth limiting groove (105).

9. A Type-C connector with an inner shell and an outer shell precisely positioned and welded according to any one of claims 1 to 6, characterized in that: Both side surfaces of the rear end of the connector body (1) are provided with tensioning positioning ribs (106), and the front end of the tensioning positioning ribs (106) is provided with an inclined surface (107); the inner shell (2) is a circular structure, and its circular seam (204) is exposed on the upper end surface of the inner shell (2), and the outer shell (3) also covers the circular seam (204).

10. A Type-C connector with an inner shell and an outer shell precisely positioned and welded according to any one of claims 1 to 6, characterized in that: The front end face of the inner shell (2) is flush with the front end face of the outer shell (3), and the tongue plate (11) at the front end of the connector body (1) partially protrudes outside the front end face of the inner shell (2); the Type-C connector is installed in a notch (41) opened at the front end of the PCB board (4), and the upper and lower parts of the Type-C connector protrude outside the upper and lower end faces of the PCB board (4), respectively; the first fixing leg (21) and the second fixing leg (31) can be smoothly pressed into the first soldering pad (42) and the second soldering pad (43) of the PCB board (4) from top to bottom and fixed by soldering.

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