Multi-port power conversion device with waterproof function

Abstract

The invention relates to a multi-port power conversion device with a waterproof function, which comprises a top cover, a bottom cover, a shell, a control structure and a connecting port, and is characterized in that the top cover is connected to the top of the shell, the bottom cover is connected to the bottom of the shell, the control structure is arranged in the shell, and the connecting port is arranged on the outer side of the shell and is communicated with the interior of the shell; the control structure is connected with external equipment through the connecting port, the bottom cover is provided with a fixing screw, the fixing screw penetrates through the interior of the shell to be connected to the top cover, a screw head of the fixing screw is concavely provided with a first sealing groove, the fixing screw is provided with a first sealing washer, and the first sealing washer is filled in the first sealing groove after being extruded during locking. Through unique structural design and sealing measures, good waterproof performance is achieved, the reliability of the device in a humid or water environment is improved, and the service life of the device in the humid or water environment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of power electronics, and in particular to a multi-port power conversion device with a waterproof function. Background Art

[0002] In the scenario of outdoor power supply used by the military, the power supply is generally required to have dustproof and waterproof functions. When the power supply is exposed to rain and soaking outdoors, it can still work normally and continuously supply power to the electrical equipment. In order to meet the requirements of dustproof and waterproof, the existing power supply with waterproof function needs to be filled with glue inside the power supply, which greatly increases the weight of the power supply and greatly reduces the convenience of outdoor use. Another way is to use an integral sealing ring for waterproof design, and a circle of screw sealing grooves is provided on the orifice of the screw installation hole, and the sealing gasket is set in the sealing groove. When the screw is tightened, the sealing gasket is deformed and fills the sealing groove to achieve sealing. This waterproof method has complex structural processing. It is necessary to put the sealing gasket into the groove first, then add a nylon gasket, and then lock the screw. Since the nylon gasket and the screw are hard connected, there will be a gap between the screw and the nylon gasket after the screw is locked. When it is immersed in water for a long time, water will penetrate into the casing from between the screw and the nylon gasket along the screw thread, which is not suitable for products with high protection level. Moreover, if the machine needs to be disassembled and assembled first, the film sticker (for waterproofing) of the chassis needs to be torn off before the screws on the top cover are disassembled and assembled, the torn film sticker cannot be reused, resulting in waste and difficulty in assembly. Summary of the invention

[0003] The invention provides a multi-port power conversion device with waterproof function, aiming to solve the problem that the existing power supply device has poor waterproof property and easily leads to device failure.

[0004] The present invention provides a multi-port power conversion device with a waterproof function, comprising a top cover, a bottom cover, a shell, a control structure and a connection port, wherein the top cover is connected to the top of the shell, the bottom cover is connected to the bottom of the shell, the control structure is arranged inside the shell, the connection port is arranged on the outside of the shell and communicated with the inside of the shell, the control structure is connected to an external device through the connection port, the bottom cover is provided with a fixing screw, the fixing screw passes through the inside of the shell and is connected to the top cover, a first sealing groove is concavely provided at the screw head of the fixing screw, a first sealing gasket is provided on the fixing screw, and the first sealing gasket is squeezed and filled in the first sealing groove when locking.

[0005] As a further improvement of the present invention, a second sealing groove is provided on the top edge of the shell, a second sealing gasket is provided in the second sealing groove, a first protruding piece is protruding from the bottom edge of the top cover, the first protruding piece is connected to the second sealing groove, and the second sealing gasket contacts with the second sealing groove and the first protruding piece after being extruded.

[0006] As a further improvement of the present invention, a third sealing groove is provided on the bottom edge of the shell, a third sealing gasket is provided in the third sealing groove, a second protruding piece is protruded from the top edge of the bottom cover, the second protruding piece is connected to the third sealing groove, and the third sealing gasket contacts with the third sealing groove and the second protruding piece after being extruded.

[0007] As a further improvement of the present invention, the control structure includes a control board and a power board, the control board is arranged on the side wall support ear of the shell, the power board is arranged on the bottom cover, and the control board is connected to the power board.

[0008] As a further improvement of the present invention, a display window is provided in the middle of the top cover, a display screen is connected to the bottom of the top cover and placed at the display window, a membrane button is pasted on the top of the top cover, and the display screen and the membrane button are both connected to the control panel.

[0009] As a further improvement of the present invention, the control structure also includes a filter board, which is arranged inside the shell and close to the connection port. The filter board is connected to the external device through the connection port, and the pins on the power board are connected to the filter board.

[0010] As a further improvement of the present invention, the connection port is provided with a waterproof cover.

[0011] As a further improvement of the present invention, a thermal pad is provided between the power board and the bottom cover.

[0012] The beneficial effects of the present invention are: through unique structural design and sealing measures, good waterproof performance is achieved, the reliability and service life of the device in a humid or water environment are improved, and at the same time, it has a compact structure, good heat dissipation effect, easy operation and maintenance, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an exploded view of the device of the present invention; Figure 2 is a cross-sectional view of the device of the present invention; Figure 3 is a schematic diagram of a fixing screw of the present invention; Figure 4 is a cross-sectional view of the fixing screw of the present invention after being assembled; Figure 5 It is an overall diagram of the molding of the device of the present invention.

[0014] Figure markings: 1-housing, 2-top cover, 3-bottom cover, 4-display window, 5-display screen, 6-membrane button, 7-first protrusion, 8-control panel, 9-second sealing groove, 10-second sealing gasket, 11-connection port, 12-third sealing gasket, 13-power board, 14-second protrusion, 15-fixing screw, 16-first sealing gasket, 17-observation window, 18-waterproof cover, 19-filter board, 20-first sealing groove. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0016] like Figure 1-5 As shown, the present invention provides a multi-port power conversion device with waterproof function, including a top cover 2, a bottom cover 3, a shell 1, a control structure and a connection port 11, the top cover 2 is connected to the top of the shell 1, the bottom cover 3 is connected to the bottom of the shell 1, the control structure is arranged inside the shell 1, the connection port 11 is arranged on the outside of the shell 1 and communicated with the inside of the shell 1, the control structure is connected to an external device through the connection port 11, the bottom cover 3 is provided with a fixing screw 15, the fixing screw 15 passes through the inside of the shell 1 and is connected to the top cover 2, the screw head of the fixing screw 15 is concavely provided with a first sealing groove 20, the fixing screw 15 is provided with a first sealing gasket 16, and the first sealing gasket 16 is squeezed and filled in the first sealing groove 20 when locking.

[0017] As an embodiment of the present invention, a second sealing groove 9 is provided on the top edge of the shell 1, a second sealing gasket 10 is provided in the second sealing groove 9, a first protruding piece 7 is protruded from the bottom edge of the top cover 2, the first protruding piece 7 is connected to the second sealing groove 9, and the second sealing gasket 10 contacts with the second sealing groove 9 and the first protruding piece 7 after being extruded.

[0018] As another embodiment of the present invention, a third sealing groove is provided on the bottom edge of the shell 1, a third sealing gasket 12 is provided in the third sealing groove, a second protruding piece 14 is protruded from the top edge of the bottom cover 3, the second protruding piece 14 is connected to the third sealing groove, and the third sealing gasket 12 contacts with the third sealing groove and the second protruding piece 14 after being extruded.

[0019] As another embodiment of the present invention, the control structure includes a control board 8 and a power board 13, the control board 8 is arranged on the side wall support ear of the shell 1, the power board 13 is arranged on the bottom cover 3, and the control board 8 is connected to the power board 13.

[0020] As another embodiment of the present invention, a display window 4 is provided in the middle of the top cover 2, a display screen 5 is connected to the bottom of the top cover 2 and placed at the display window 4, a membrane button 6 is pasted on the top of the top cover 2, and the display screen 5 and the membrane button 6 are both connected to the control panel 8.

[0021] As another embodiment of the present invention, the control structure also includes a filter board 19, which is arranged inside the shell 1 and close to the connection port 11. The filter board 19 is connected to an external device through the connection port 11, and the pins on the power board 13 are connected to the filter board 19.

[0022] As another embodiment of the present invention, the connection port 11 is provided with a waterproof cover 18 .

[0023] As another embodiment of the present invention, a thermal pad is provided between the power board 13 and the bottom cover 3 .

[0024] The present invention provides a multi-port power conversion device with a waterproof function. In modern electronic equipment and power systems, the application of multi-port power conversion devices is becoming more and more extensive. However, existing multi-port power conversion devices often have deficiencies in waterproof performance and are prone to failure in a humid or watery environment, affecting their normal use and reliability. The purpose of this solution is to provide a multi-port power conversion device with a waterproof function to improve the reliability and service life of the device in a humid or watery environment.

[0025] The top cover 2, the shell 1 and the bottom cover 3 are sealed by screw-fastening the sealing structure. The top cover 2 is provided with a screw installation hole below, the shell 1 is provided with a circle of integral sealing grooves and screw through holes, and the bottom cover 3 is provided with screw through holes. An integral sealing ring is provided in the integral sealing groove, and the top cover 2, the shell 1 and the bottom cover 3 are fastened and connected by the fixing screws 15, and the integral sealing ring is pressed to achieve a good sealing effect. The first sealing groove 20 is provided at the screw head of the fixing screw 15, and the first sealing groove 20 is an inner groove. The sealing is achieved by tightening the fixing screw 15, and the first sealing gasket 16 is pressed to deform it and fill the first sealing groove 20 in the fixing screw 15. This sealing method utilizes the interaction of mechanical structures. The pressure generated by tightening the fixing screw 15 causes the first sealing gasket 16 to deform, thereby filling the first sealing groove 20 and forming a seal; the screw design with grooves provides a specific space for sealing, so that the first sealing gasket 16 can be deformed in a targeted manner and play a sealing role.

[0026] The groove on the screw can play a limiting function, which can not only ensure that the contact surface of the fixing screw 15 is well connected, but also prevent the first sealing gasket 16 from being damaged due to excessive deformation. To ensure that the contact surface is well connected, the first sealing groove 20 can limit the tightening degree of the fixing screw 15, ensure good contact under appropriate pressure, and avoid connection problems caused by being too loose or too tight. Preventing the first sealing gasket 16 from being excessively deformed can extend the service life of the sealing ring and avoid damage due to excessive extrusion, thereby improving the reliability of the entire sealing structure. The above-mentioned sealing method and limiting function effectively improve the dustproof and waterproof performance. Good sealing can prevent external impurities such as dust and moisture from entering the interior of the device, protect the key components of the device, and extend the service life of the equipment. Especially in some application scenarios with high requirements for dustproof and waterproof, such as outdoor equipment, electronic equipment, etc., this sealing method has important practical significance.

[0027] In addition, a circle of integral sealing protrusions is provided on the top cover 2 and the bottom cover 3, which are the first protrusion 7 and the second protrusion 14, respectively, which are respectively inserted into the second sealing groove 9 and the third sealing groove of the shell 1, and are respectively pressed on the second sealing gasket 10 and the third sealing gasket 12, thereby further enhancing the waterproof performance of the device.

[0028] The display screen 5 and the membrane key 6 are installed on the top cover 2. The LCD display screen 5 is fixed to the top cover 2 by flat head screws. The membrane key 6 is bonded to the top cover 2 by 3M waterproof glue, and the membrane key 6 is located above the display window 4. The control board 8 and the power board 13 are installed inside the shell 1, and the filter board 19 is installed on both sides. The power board 13 is fixed to the bottom cover 3 by three combination screws. The control board 8 is placed on the ear position of the inner side wall of the shell 1 and is connected to the power board 13 through a connector. The filter board 19 is welded to the place near the connection port 11 and installed on both sides of the shell 1. The connection port 11 is provided with multiple ports to meet the communication of multiple ports. The thermal pad is provided between the power board 13 and the bottom cover 3 to improve the heat dissipation effect. The bottom cover 3 with the power board 13 installed is connected to the filter board 19 through the pins on the power board 13.

[0029] The manufacturing process of the device is as follows: the top cover 2, the shell 1 and the bottom cover 3 are manufactured to ensure the dimensional accuracy and surface quality, the second sealing groove 9, the third sealing groove and the screw through hole are machined on the shell 1, the screw mounting holes and the screw through holes are machined on the top cover 2 and the bottom cover 3 respectively, and the first protrusion 7 and the second protrusion 14 are machined. The second sealing gasket 10 is installed in the second sealing groove 9 of the shell 1, and the third sealing gasket 12 is installed in the third sealing groove of the shell 1. The first protrusion 7 is inserted into the second sealing groove 9 and the second sealing gasket 10 is squeezed, and the second protrusion 14 is inserted into the third sealing groove and the third sealing gasket 12 is squeezed, and then the top cover 2, the bottom cover 3 and the shell 1 are fastened and connected by the fixing screws 15 and the first sealing gasket 16, and the overall sealing ring is pressed to achieve sealing. Use flat head screws to fix the LCD display screen 5 on the top cover 2 to ensure that it is firmly installed. Use 3M waterproof glue to glue the membrane key 6 to the top cover 2 so that it is located above the display window 4. Place the control board 8 on the side wall support ear inside the housing 1 and connect it to the power board 13 through a connector. The power board 13 is fixed to the bottom cover 3 by screws. Weld the filter board 19 to the connection port 11. Set the thermal pad between the power board 13 and the bottom cover 3 to improve the heat dissipation effect.

[0030] When not in use, the waterproof cover 18 is inserted into the connection port 11 to seal the interface to prevent dust and water from flowing into the device. At the same time, a transparent observation window 17 is provided on the housing 1 so that the internal situation of the device can be seen from the outside.

[0031] The device can reduce production and maintenance costs and improve work efficiency through simple assembly. For large-scale production and on-site installation, simple assembly means reducing manpower and time investment, improving production efficiency and installation speed. The device can be disassembled and assembled multiple times without damaging the assembly parts. The modular installation allows each component to be installed and disassembled independently, which is convenient for maintenance and replacement. The characteristics of multiple disassembly and assembly without damaging the assembly parts improve the maintainability and service life of the equipment. When maintenance or upgrading is required, parts can be easily disassembled and replaced without damaging other parts.

[0032] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A multi-port power conversion device with waterproof function, characterized in that: It includes a top cover, a bottom cover, a shell, a control structure and a connection port, the top cover is connected to the top of the shell, the bottom cover is connected to the bottom of the shell, the control structure is arranged inside the shell, the connection port is arranged on the outside of the shell and communicated with the inside of the shell, the control structure is connected to an external device through the connection port, the bottom cover is provided with a fixing screw, the fixing screw passes through the inside of the shell and is connected to the top cover, the screw head of the fixing screw is recessed with a first sealing groove, the fixing screw is provided with a first sealing gasket, and the first sealing gasket is squeezed and filled in the first sealing groove when locking.

2. The multi-port power conversion device with waterproof function according to claim 1, characterized in that: A second sealing groove is provided on the top edge of the shell, a second sealing gasket is provided in the second sealing groove, a first protruding piece is protruded from the bottom edge of the top cover, the first protruding piece is connected to the second sealing groove, and the second sealing gasket contacts with the second sealing groove and the first protruding piece after being squeezed.

3. The multi-port power conversion device with waterproof function according to claim 1, characterized in that: A third sealing groove is provided on the bottom edge of the shell, a third sealing gasket is provided in the third sealing groove, a second protruding piece is protruded from the top edge of the bottom cover, the second protruding piece is connected to the third sealing groove, and the third sealing gasket contacts with the third sealing groove and the second protruding piece after being squeezed.

4. The multi-port power conversion device with waterproof function according to claim 1, characterized in that: The control structure comprises a control board and a power board. The control board is arranged on the side wall support ear of the shell, and the power board is arranged on the bottom cover. The control board is connected to the power board.

5. The multi-port power conversion device with waterproof function according to claim 4, characterized in that: A display window is arranged in the middle of the top cover, a display screen is connected to the bottom of the top cover and is placed at the display window, a film button is pasted on the top of the top cover, and the display screen and the film button are both connected to the control panel.

6. The multi-port power conversion device with waterproof function according to claim 4, characterized in that: The control structure also includes a filter board, which is arranged inside the shell and close to the connection port. The filter board is connected to an external device through the connection port, and the pins on the power board are connected to the filter board.

7. The multi-port power conversion device with waterproof function according to claim 1, characterized in that: The connection port is provided with a waterproof cover.

8. The multi-port power conversion device with waterproof function according to claim 4, characterized in that: A thermal pad is provided between the power board and the bottom cover.

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