A waterproof large-current USB connector

Abstract

The utility model provides a waterproof type high current USB connector, include: shell, base, left support, right support and terminal subassembly, terminal subassembly includes rubber core, metal terminal passes through integral injection mode and is fixed on rubber core, and the waterproof ring is installed on the end boundary of rubber core, terminal subassembly installs in the rear end of base, and the waterproof ring that installs on rubber core end boundary is assembled together through interference fit between base rear limit installation board, and left support and right support are inserted in the fixed position of reserving on base and are connected with shell through the contact spring that sets up in the top after. The utility model discloses a waterproof type high current USB connector rubber core simple structure, easy to assemble, and metal terminal passes through integral injection mode and is fixed on rubber core, makes rubber core and metal terminal be integrated, and there is no gap between metal terminal and rubber core, can play waterproof, dustproof effect, and adopts the whole surrounding structure, and effectively enhanced the overall waterproof effect of USB connector.

Description

Technical Field

[0001] This utility model relates to the field of USB device technology, specifically to a waterproof high-current USB connector. Background Technology

[0002] High-current waterproof connectors are interfaces used in computers and chargers. They enable fast charging, data connection, and transmission at speeds up to 480Mbps, and have a lifespan of 5000 mating cycles. While primarily used in computers and chargers, existing connectors on the market lack waterproof functionality, failing to meet the requirements of some specialized applications demanding waterproofing.

[0003] In the prior art, Chinese patent CN206685598U discloses a high-current USB connector with a waterproof sheath, comprising: a metal shell, a waterproof sheath, a rubber core, and several gold-plated terminals. One end of each gold-plated terminal is embedded in a slot of the rubber core, which is snapped onto the metal shell. The waterproof sheath has a U-shaped end face, forming a receiving space. When the waterproof sheath covers the metal shell, the metal shell is housed within the receiving space. This USB connector, with its waterproof structure, can be used in harsh environments, ensuring normal operation in high-temperature, high-humidity rainy days or humid environments such as the ocean. Furthermore, this USB connector can handle a large current, such as 6A-8A, effectively meeting the demands of current fast charging technology. It is safer, more reliable, and has a longer service life than ordinary connectors. However, the waterproof structure of the above-mentioned high-current USB connector still has the following defects: (1) It adopts a semi-enclosed structure, and the bottom waterproof capability of the high-current USB connector is weak; (2) The terminal and the core are fitted with a slot, and the slot fit is prone to leaving gaps, which weakens the waterproof capability between the terminal and the core; (3) The core structure is complex and difficult to assemble. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a waterproof high-current USB connector. The core structure is simple and easy to assemble. The metal terminals are fixed to the core in one piece by injection molding, making the core and metal terminals a single unit. There are no gaps between the metal terminals and the core, which can provide waterproof and dustproof functions. Moreover, the fully enclosed structure effectively enhances the overall waterproof effect of the USB connector.

[0005] To achieve the above technical solution, this utility model provides a waterproof high-current USB connector, comprising: a shell, a base, a left bracket, a right bracket, and a terminal assembly. The base includes a base body, on which a shell mounting cavity is provided, the shell being installed within the shell mounting cavity. A rear limiting mounting plate is provided on the rear side of the base body, a terminal through hole is provided at the top of the rear limiting mounting plate, and terminal bending limiting grooves are provided in the middle and bottom of the rear limiting mounting plate. The terminal assembly includes a core, and multiple metal terminals arranged side-by-side and spaced apart are fixed to the core by integral injection molding. On the core, a waterproof ring mounting groove is provided on the end edge of the core, and the waterproof ring is installed in the waterproof ring mounting groove; the terminal assembly is installed at the rear end of the base, and the front end of the metal terminal extends into the housing after passing through the terminal through hole of the rear limiting mounting plate, and the rear end of the metal terminal is bent and embedded into the terminal bending limiting groove provided on the rear limiting mounting plate. The waterproof ring installed on the end edge of the core and the rear limiting mounting plate are assembled together by interference fit. After the left bracket and the right bracket are inserted into the reserved fixed position on the base, they are connected to the housing through the contact spring provided on the top of the left bracket or the right bracket.

[0006] In the above technical solution, during actual assembly, the outer shell is first inserted into the base, and then the left and right brackets are inserted into the reserved fixing positions of the base. They are then connected to the outer shell through the contact springs set on the top of the left or right brackets. Finally, the terminal assembly is assembled on the rear end of the base. Since the metal terminals are fixed to the core in one piece by injection molding, the core and the metal terminals are integrated into one piece. There are no gaps between the metal terminals and the core, which can play a role in waterproofing and dustproofing. Furthermore, the waterproof ring installed on the edge of the core and the rear limiting mounting plate are assembled together by interference fit, which can further enhance the waterproof performance between the core and the base. Moreover, the base adopts a fully enclosed structure, which can effectively enhance the overall waterproof effect of the USB connector.

[0007] Preferably, the outer casing includes an outer casing body, which is embedded in an outer casing mounting cavity provided on the base body. The top of the outer casing body has two parallel, spaced-apart, downward-protruding upper snap-fit ​​springs, and the lower part of the outer casing body has two matching, upward-protruding lower snap-fit ​​springs. The left and right ends of the outer casing body each have inward-protruding side snap-fit ​​springs, and the left and right ends of the rear side of the outer casing body each have rearward-extending rear snap-fit ​​bending strips. In actual operation, the upper, lower, and side snap-fit ​​springs effectively enhance the stability of the USB connector during insertion and removal, ensuring stable USB connector insertion and removal.

[0008] Preferably, the left and right brackets have the same structure, both including a bracket body. The bracket body has outwardly protruding buckles on its side, contact springs are located at the top of the bracket body, and two solder feet are located at the bottom of the bracket body. In actual operation, the buckles enhance the stability of the left and right brackets when assembled with the base, and the solder feet are soldered to the PCB, thus connecting the outer casing to the PCB.

[0009] Preferably, the left and right ends of the rubber core are provided with outwardly protruding mounting limiting end plates, and the rear buckle bending strip provided on the rear side of the outer shell body is bent and fixed together with the mounting limiting end plates to improve the stability of the rubber core and the outer shell during assembly.

[0010] Preferably, the base is integrally injection molded from waterproof plastic material to enhance its waterproofness.

[0011] The beneficial effects of this waterproof high-current USB connector are as follows: This waterproof high-current USB connector has a simple structure, reasonable design, and is easy to assemble. During actual assembly, first, the outer shell is inserted into the base. Then, the left and right brackets are inserted into the pre-reserved fixing positions on the base, and connected to the outer shell via contact springs located on the top of the left or right bracket. Finally, the terminal assembly is assembled onto the rear end of the base. Since the metal terminals are fixed to the core through integral injection molding, the core and metal terminals are integrated seamlessly, providing waterproof and dustproof protection. Furthermore, the waterproof ring installed on the edge of the core is assembled with the rear limiting mounting plate via an interference fit, further enhancing the waterproof performance between the core and the base. The base adopts a fully enclosed structure, effectively enhancing the overall waterproof performance of the USB connector. It can be used in harsh environments, ensuring normal operation in high-temperature and high-humidity rainy days or humid environments such as the ocean. Attached Figure Description

[0012] Figure 1 This is a front view of the three-dimensional structure of this utility model.

[0013] Figure 2 This is a rear view of the three-dimensional structure of this utility model after assembly.

[0014] Figure 3 This is an exploded view of the three-dimensional structure of this utility model. Figure I .

[0015] Figure 4 This is an exploded view of the three-dimensional structure of this utility model. Figure II .

[0016] Figure 5 This is an exploded view of the three-dimensional structure of this utility model. Figure III .

[0017] Figure 6 This is an exploded view of the three-dimensional structure of this utility model. Figure IV .

[0018] Figure 7 This is a three-dimensional structural assembly diagram of the outer shell in this utility model.

[0019] Figure 8 This is a three-dimensional structural assembly diagram of the left and right supports in this utility model.

[0020] Figure 9 This is a three-dimensional structural assembly diagram of the terminal assembly in this utility model.

[0021] In the diagram: 1. Outer shell; 11. Outer shell body; 12. Upper snap spring; 13. Lower snap spring; 14. Side snap spring; 15. Rear snap bending strip; 2. Base; 21. Base body; 22. Rear limit mounting plate; 23. Terminal through hole; 24. Terminal bending limit groove; 3. Left bracket; 31. Bracket body; 32. Inverted buckle; 33. Contact spring; 34. Welding foot; 4. Right bracket; 5. Terminal assembly; 51. Glue core; 52. Metal terminal; 53. Waterproof ring; 54. Mounting limit end plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: A waterproof high-current USB connector.

[0024] Reference Figures 1 to 9As shown, a waterproof high-current USB connector includes: a housing 1, a base 2, a left bracket 3, a right bracket 4, and a terminal assembly 5. The base 2 is integrally injection molded from waterproof plastic material to enhance its waterproofness. The base 2 includes a base body 21, on which a housing mounting cavity is provided. The housing 1 is installed in the housing mounting cavity. A rear limiting mounting plate 22 is provided on the rear side of the base body 21. A terminal through hole 23 is provided on the top of the rear limiting mounting plate 22. Terminal bending limiting grooves 24 are provided in the middle and bottom of the rear limiting mounting plate 22. The outer casing 1 includes a casing body 11, which is embedded in a casing mounting cavity provided on the base body 21. The top of the casing body 11 has two parallel, spaced-apart, downwardly protruding upper snap-fit ​​springs 12. The middle of the casing body 11 has two matching, upwardly protruding lower snap-fit ​​springs 13. The left and right ends of the casing body 11 each have inwardly protruding side snap-fit ​​springs 14. The left and right ends of the rear side of the casing body 11 each have rearwardly extending rear snap-fit ​​bending strips 15. In actual operation, the upper snap-fit ​​springs 12, lower snap-fit ​​springs 13, and side snap-fit ​​springs 14 effectively enhance the stability of the USB connector during insertion and removal, ensuring stable USB connector insertion and removal.

[0025] The terminal assembly 5 includes a core 51, and five metal terminals 52 arranged side by side at intervals are fixed to the core 51 by integral injection molding. The metal terminals 52 are fixed to the core 51 by integral injection molding, so that the core 51 and the metal terminals 52 are integrated into one piece, with no gap between the metal terminals 52 and the core 51, which can play a role in waterproofing and dustproofing. A waterproof ring mounting groove is provided on the end edge of the core 51, and a waterproof ring 53 is installed in the waterproof ring mounting groove. Both the left and right end edges of the core 51 are provided with outwardly protruding mounting limiting end plates 54. The rear buckle bending strip 15 provided on the rear side of the outer shell 11 is bent and fixed together with the mounting limiting end plates 54 to improve the stability of the core 51 and the outer shell 1 during assembly. The terminal assembly 5 is installed at the rear end of the base 2, and the front end of the metal terminal 52 extends into the housing 1 after passing through the terminal through hole 23 of the rear limiting mounting plate 22. The rear end of the metal terminal 52 is bent and embedded into the terminal bending limiting groove 24 provided on the rear limiting mounting plate 22. The waterproof ring 53 installed on the end edge of the rubber core 51 is assembled with the rear limiting mounting plate 22 by interference fit, which can further enhance the waterproof performance between the rubber core 51 and the base 2.

[0026] After the left bracket 3 and right bracket 4 are inserted into the pre-reserved fixing positions on the base 2, they are connected to the outer shell 1 through the contact springs 33 located on the top of the left bracket 3 or right bracket 4. The left bracket 3 and right bracket 4 have the same structure, both including a bracket body 31. The side of the bracket body 31 is provided with an outwardly protruding buckle 32, the contact springs 33 are located at the top of the bracket body 31, and two solder feet 34 are located at the bottom of the bracket body 31. In actual operation, the buckles 32 can enhance the stability of the left bracket 3 and right bracket 4 when assembled with the base 2, and the solder feet 34 are soldered to the PCB, thereby connecting the outer shell 1 to the PCB.

[0027] This waterproof, high-current USB connector features a simple and rationally designed structure, making assembly easy. During assembly, first insert the outer shell 1 into the base 2. Then, insert the left bracket 3 and right bracket 4 into the pre-reserved fixing positions on the base 2. Connect them to the outer shell 1 via the contact spring 33 located on the top of the left bracket 3 or right bracket 4. Finally, assemble the terminal assembly 5 onto the rear end of the base 2. Since the metal terminal 52 is integrally injection molded onto the core 51, the core 51 and metal terminal 52 are seamlessly integrated, providing waterproofing and dustproofing. Furthermore, the waterproof ring 53 installed on the edge of the core 51 is assembled with the rear limiting mounting plate 22 via an interference fit, further enhancing the waterproof performance between the core 51 and the base 2. The base 2 also features a fully enclosed structure, effectively enhancing the overall waterproof performance of the USB connector. It can be used in harsh environments, ensuring normal operation in high-temperature, high-humidity rainy weather or humid environments such as the ocean.

[0028] The above description is only a preferred embodiment of the present utility model. However, the present utility model should not be limited to the content disclosed in the embodiments and drawings. Therefore, any equivalent or modified embodiments made without departing from the spirit disclosed in the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A waterproof high-current USB connector, characterized in that... include: The device comprises a housing, a base, a left bracket, a right bracket, and a terminal assembly. The base includes a base body with a housing mounting cavity, into which the housing is installed. A rear limiting mounting plate is provided on the rear side of the base body. A terminal through hole is provided at the top of the rear limiting mounting plate, and terminal bending limiting grooves are provided in the middle and bottom of the rear limiting mounting plate. The terminal assembly includes a core, and multiple metal terminals arranged side-by-side and spaced apart are fixed to the core by integral injection molding. A waterproof ring is provided on the end edge of the core. The mounting groove is in which the waterproof ring is installed; the terminal assembly is installed at the rear end of the base, and the front end of the metal terminal extends into the housing after passing through the terminal through hole of the rear limiting mounting plate. The rear end of the metal terminal is bent and embedded into the terminal bending limiting groove provided on the rear limiting mounting plate. The waterproof ring installed on the end edge of the rubber core is assembled with the rear limiting mounting plate by interference fit. After the left bracket and the right bracket are inserted into the fixed position reserved on the base, they are connected to the housing by the contact spring provided on the top of the left bracket or the right bracket.

2. The waterproof high-current USB connector as described in claim 1, characterized in that: The outer shell includes an outer shell body, which is embedded in an outer shell mounting cavity provided on the base body. The top of the outer shell body is provided with two parallel and spaced-apart downward protruding upper snap springs. The middle of the outer shell body is provided with two lower snap springs that match the upper snap springs and protrude upward. The left and right sides of the outer shell body are provided with inward protruding side snap springs. The left and right ends of the rear side of the outer shell body are respectively provided with rearward extending rear snap bending strips.

3. The waterproof high-current USB connector as described in claim 1, characterized in that: The left and right supports have the same structure, both including a support body. The side of the support body is provided with an outwardly protruding buckle, the contact spring is provided at the top of the support body, and the front and rear welding feet are provided at the bottom of the support body.

4. The waterproof high-current USB connector as described in claim 2, characterized in that: The left and right ends of the rubber core are each provided with an outwardly protruding mounting limiting end plate, and the rear buckle bending strip provided on the rear side of the outer shell body is bent and fixed together with the mounting limiting end plate.

5. The waterproof high-current USB connector as described in claim 1, characterized in that: The base is integrally injection molded from waterproof plastic material.

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