Waterproof Power Adapter with USB Interface

Abstract

The present invention discloses a waterproof power adapter with a USB interface, which comprises a power adapter body. The power adapter body includes a housing and a PCB assembly fixed in the housing. One end of the housing forms a USB interface, and a waterproof structure is arranged between the USB interface and the PCB assembly to prevent liquid from entering the interior of the waterproof power adapter through the USB interface. Moreover, the waterproof structure is hermetically connected to the housing. The primary technical problem solved by the present invention is to provide a waterproof power adapter with a USB interface, which can prevent liquid from directly flowing into internal electronic components and the PCB circuit board through the USB connection socket, and has the advantages of being safer and more reliable in use.

Description

Technical Field

[0001] The present invention relates to a power supply device, and more particularly to a waterproof power adapter with a USB interface. Background Art

[0002] With the development of technology, electronic devices such as smart phones and tablet computers have been gradually widely used in people's production and life. Due to the battery life problem of electronic devices, general electronic devices need to be charged using a power adapter after being used for 5 - 6 hours if they need to continue to be used. Currently, there are two connection methods for the output connection end of the power adapter on the market: one is the direct connection output method of a flexible wire, and this structure can meet the waterproof safety standard; the other is the USB connection socket method for the output end. Since the output interface method of the first type of power adapter can only be one kind, it has gradually been phased out of the market. The second type of power charging adapter directly fixes the USB connection socket on the internal main PCB board, and the output interface method can be changed arbitrarily according to actual use. However, in the actual use process of this type of power adapter, it is found that there is a serious problem: no sealing and waterproof device is provided at the USB connection socket end, so liquid is easily directly introduced into the internal electronic components and the PCB circuit board from the USB connection socket port, resulting in easily occurring adverse phenomena such as circuit short - circuit and electric shock after the product is powered on. Summary of the Invention

[0003] Aiming at the defects and existing technical problems of the above - mentioned prior art, the primary technical problem solved by the present invention is to provide a waterproof power adapter that can prevent liquid from entering the power adapter through the USB interface, thereby completely eliminating the short - circuit or burning of the PCB circuit board caused by liquid entering the power supply through the USB interface, and having the advantages of being safer and more reliable in use.

[0004] The technical solution for achieving the above purpose is as follows:

[0005] The waterproof power adapter with a USB interface of the present invention includes a power adapter body, and the power adapter body includes a housing and a PCB assembly fixed in the housing. One end of the housing forms a USB interface, and a waterproof structure is provided between the USB interface and the PCB assembly to prevent liquid from entering the interior of the waterproof power adapter, and the waterproof structure is hermetically connected to the housing.

[0006] A further improvement of the present invention is that the waterproof structure includes a waterproof bracket and a conductive sheet embedded in the waterproof bracket, and the waterproof bracket is hermetically connected to the housing, and the conductive sheet is connected to the PCB assembly.

[0007] A further improvement of the present invention is that the PCB assembly includes a main circuit board and a USB socket assembly. The USB socket assembly is arranged in the waterproof bracket, and the USB socket assembly is connected to the main circuit board through the conductive sheet.

[0008] A further improvement of the present invention lies in that the waterproof structure and the housing are in interference fit.

[0009] A further improvement of the present invention lies in that the USB interface and the housing are integrally formed.

[0010] A further improvement of the present invention lies in that the USB interface and the housing are designed in a split manner.

[0011] A further improvement of the present invention lies in that it further includes a sealing gasket, which is arranged between the waterproof structure and the USB interface.

[0012] A further improvement of the present invention lies in that the waterproof structure and the housing are integrally formed.

[0013] A further improvement of the present invention lies in that the USB interface and the housing are designed in a split manner.

[0014] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects:

[0015] In the waterproof power adapter with a USB interface provided by the present invention, the waterproof structure and the plug assembly are respectively arranged at both ends of the housing, so that the housing forms a sealed housing, preventing liquid from directly flowing into the internal electronic components and the PCB circuit board through the USB connection socket, and preventing bad phenomena such as circuit short - circuit and electric shock. Thus, the power adapter provided by the present invention is safer and more reliable in use and meets the waterproof safety standard. The waterproof power adapter with a USB interface provided by the present invention is provided with a sealing gasket, which is arranged between the USB interface and the housing, thereby preventing liquid from entering the housing through the connection gap between the USB interface and the housing, completely eliminating accidents such as circuit short - circuit and electric shock caused by water entering the housing, and greatly improving the safety performance of the power adapter provided by the present invention. In the present invention, the connections of the USB interface, the waterproof structure and the housing are all welded together by ultrasonic waves. This connection method has the advantages of fast welding speed, high welding strength, good sealing performance, clean and pollution - free, and will not damage the workpiece. Therefore, it greatly saves manpower and improves work efficiency. In the present invention, the waterproof structure, the USB socket assembly and the main circuit board are interconnected through conductive sheets, making the production and assembly of the power adapter provided by the present invention more convenient and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded view of the structure of the first embodiment of the waterproof power adapter with a USB interface according to the present invention;

[0017] Figure 2 is a schematic diagram of the structure of the second embodiment of the waterproof power adapter with a USB interface according to the present invention;

[0018] Figure 3 This is a schematic structural diagram of the third embodiment of the waterproof power adapter with a USB interface according to the present invention;

[0019] Figure 4 This is a schematic structural diagram of the fourth embodiment of the waterproof power adapter with a USB interface according to the present invention. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1

[0022] As Figure 1 and Figure 2 shown, the waterproof power adapter with a USB interface provided by the present invention includes a housing 1, a plug assembly 2, a waterproof structure 3, a PCB assembly, and a USB interface 5. The housing 1 is a hollow housing made of engineering plastic or other materials with insulation and flame retardant properties. The plug assembly 2 and the USB interface 5 are respectively arranged at both ends of the housing 1. In this embodiment, the plug assembly 2 mainly includes a pair of conductive metal sheets and a plug housing for fixing the conductive metal sheets. The plug housing is connected by ultrasonic welding or other fixing methods such as screws. The waterproof structure 3 is arranged between the PCB assembly and the USB interface 5, and the waterproof structure 3 is hermetically connected to the housing 1. The USB interface 5 is provided with a socket matching the USB socket.

[0023] The preferred embodiment of the present invention is as follows: The PCB assembly in the waterproof power adapter with a USB interface provided in this embodiment includes a USB socket assembly 4 and a main circuit board 6. The USB socket assembly 4 is arranged inside the waterproof structure 3, and the main circuit board 6 is fixedly arranged inside the housing 1. The main circuit board 6 is respectively connected to the plug assembly 2 and the USB socket assembly 4 through electrical connection components. Further, the USB socket assembly 4 includes a USB socket 41 and a conductive PCB board 42. The USB socket 41 is fixedly arranged on the conductive PCB board 42 and is in communication with the printed circuit on the conductive PCB board 42. A first conductive metal part 421 is also provided on the conductive PCB board 42, and the first conductive metal part 421 is in communication with the printed circuit on the conductive PCB board 42. A second conductive metal part 61 is provided on the main circuit board 6. The waterproof structure 3 includes a waterproof bracket 31 and a conductive sheet 32. The waterproof bracket 31 is hermetically connected to the housing 1. The conductive sheet 32 penetrates through the waterproof bracket 31 and the middle part of the conductive sheet 32 is embedded in the waterproof bracket 31. One end of the conductive sheet 32 is connected to the first conductive metal part 421 on the conductive PCB board 42, and the other end is connected to the second conductive metal part 61 on the main circuit board 6. The first conductive metal part 421, the second conductive metal part 61, and the conductive sheet 32 are all made of copper or other conductive metal materials. Due to the above connection method among the waterproof structure 3, the USB socket assembly 4, and the main circuit board 6, the power adapter provided by the present invention is more convenient in the production and assembly process, improving the production efficiency.

[0024] Embodiment Two

[0025] As Figure 2 shown, the waterproof power adapter with a USB interface provided by the present invention includes a housing 1, a plug assembly 2, a waterproof structure 3, a PCB assembly, and a USB interface 5. The housing 1 is a hollow housing made of engineering plastic or other materials with insulation and flame retardant properties. The plug assembly 2 and the USB interface 5 are respectively arranged at both ends of the housing 1. In this embodiment, the plug assembly 2 mainly includes a pair of conductive metal sheets and a plug housing for fixing the conductive metal sheets. The plug housing is connected by ultrasonic welding or other fixing methods such as screws. The waterproof structure 3 is arranged between the PCB assembly and the USB interface 5, and the waterproof structure 3 is hermetically connected to the housing 1. The USB interface 5 is provided with a socket matching the USB socket.

[0026] In this embodiment, the USB interface 5 and the housing 1 are integrally formed, that is, the USB interface 5 and one end of the housing 1 are integrally formed. The other end of the housing 1 is welded to the plug assembly 2 by ultrasonic waves. The waterproof structure 3 is in interference fit with the inner cavity of the housing 1, and the waterproof structure 3 is connected to the housing 1 or the USB interface 5 by ultrasonic welding or other fixed connection methods such as screws.

[0027] Embodiment Three

[0028] As Figure 3 shown, the waterproof power adapter with a USB interface provided by the present invention includes a housing 1, a plug assembly 2, a waterproof structure 3, a PCB assembly, and a USB interface 5. The housing 1 is a hollow housing made of engineering plastic or other materials with insulation and flame retardant properties. The plug assembly 2 and the USB interface 5 are respectively arranged at both ends of the housing 1. In this embodiment, the plug assembly 2 mainly includes a pair of conductive metal sheets and a plug housing for fixing the conductive metal sheets. The plug housing is connected by ultrasonic welding or other fixing methods such as screws. The waterproof structure 3 is arranged between the PCB assembly and the USB interface 5, and the waterproof structure 3 is hermetically connected to the housing 1. The USB interface 5 is provided with a socket matching the USB socket.

[0029] In this embodiment, the USB interface 5 and the housing 1 are of a split design. The USB interface 5 is connected to the waterproof structure 3 by ultrasonic welding or other fixed connection methods such as screws. And the waterproof structure 3 and the inner cavity of the housing 1 are in an interference fit. The waterproof structure 3 is ultrasonically welded to the inner wall of the housing 1. The edge of the USB interface 5 is ultrasonically welded to the end of the housing 1. This embodiment also includes a sealing gasket 7. The sealing gasket 7 is a rubber or other waterproof material rubber ring with the same shape as the USB interface 5, and the sealing gasket 7 is arranged between the waterproof structure 3 and the USB interface 5.

[0030] Embodiment 4

[0031] As Figure 4 shown, the waterproof power adapter with a USB interface provided by the present invention includes a housing 1, a plug assembly 2, a waterproof structure 3, a PCB assembly, and a USB interface 5. The housing 1 is a hollow housing made of engineering plastic or other materials with insulation and flame retardant properties. The plug assembly 2 and the USB interface 5 are respectively arranged at both ends of the housing 1. In this embodiment, the plug assembly 2 mainly includes a pair of conductive metal sheets and a plug housing for fixing the conductive metal sheets. The plug housing is connected by ultrasonic welding or other fixing methods such as screws. The waterproof structure 3 is arranged between the PCB assembly and the USB interface 5, and the waterproof structure 3 is hermetically connected to the housing 1. The USB interface 5 is provided with a socket matching the USB socket.

[0032] In this embodiment, the waterproof structure 3 and the housing 1 are of an integrally formed design. The USB interface 5 and the housing 1 are of a split design, and the USB interface 5 is connected to the end of the housing 1 by ultrasonic welding or other fixed connection methods such as screws.

[0033] The present invention has been described in detail in conjunction with the embodiments with reference to the accompanying drawings. Those of ordinary skill in the art can make various variations of the present invention based on the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A waterproof power adapter with a USB interface, comprising a power adapter body. The power adapter body includes a housing and a PCB assembly fixed within the housing. One end of the housing forms a USB interface. It is characterized in that: A waterproof structure is provided between the USB interface and the PCB assembly to prevent liquid from entering the interior of the waterproof power adapter through the USB interface, and the waterproof structure is hermetically connected to the housing. The waterproof structure includes a waterproof bracket and a conductive sheet embedded in the waterproof bracket, and the waterproof bracket is hermetically connected to the housing. The conductive sheet is connected to the PCB assembly. The PCB assembly includes a main circuit board and a USB socket assembly. The USB socket assembly is disposed within the waterproof bracket, and the USB socket assembly is connected to the main circuit board through the conductive sheet. The USB socket assembly includes a USB socket and a conductive PCB board. The USB socket is fixedly disposed on the conductive PCB board. One end of the conductive sheet is connected to a first conductive metal part on the conductive PCB board, and the other end is connected to a second conductive metal part on the main circuit board.

2. The waterproof power adapter with a USB interface according to claim 1, It is characterized in that: The waterproof structure and the housing are in an interference fit.

3. The waterproof power adapter with a USB interface according to claim 2, It is characterized in that: The USB interface and the housing are integrally formed.

4. The waterproof power adapter with a USB interface according to claim 2, It is characterized in that: The USB interface and the housing are of a split design.

5. The waterproof power adapter with a USB interface according to claim 1, It is characterized in that: It further includes a sealing gasket, and the sealing gasket is disposed between the waterproof structure and the USB interface.

6. The waterproof power adapter with a USB interface according to claim 1, It is characterized in that: The waterproof structure and the housing are integrally formed.

7. The waterproof power adapter with a USB interface according to claim 6, It is characterized in that: The USB interface and the housing are of a split design.

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