Waterproof switching power supply

Abstract

The utility model belongs to the field of switching power supplies, and discloses a waterproof switching power supply which comprises a power supply shell, the power supply shell comprises a power supply upper shell and a power supply lower shell which are oppositely arranged up and down, a circuit board arranged in the power supply shell and a lead connected with the circuit board, and the bottom edge of the power supply upper shell is fixedly connected with a sealing block. A sealing groove corresponding to the sealing block is formed in the edge of the top of the power supply lower shell, a sealing air bag matched with the sealing groove is arranged in the sealing groove, and a locking mechanism is arranged at the joint of the outer sides of the power supply upper shell and the power supply lower shell. According to the scheme, the shell of the switching power supply is improved, the sealing groove and the sealing block are arranged between the upper shell and the lower shell of the power supply and are locked and fixed through the locking mechanism so as to ensure that the joint of the shell is tightly closed, and in addition, the waterproof performance of the power supply is further enhanced by additionally arranging the sealing air bag and the inflation mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of switching power supplies, and more specifically to a waterproof switching power supply. Background Art

[0002] Switching Mode Power Supply (SMPS), also known as switching power supply or switching converter, is a high-frequency power conversion device and a type of power supply. Its function is to convert a voltage level into the voltage or current required by the user through different forms of architecture. The input of the switching power supply is mostly AC power (such as mains) or DC power, and the output is mostly equipment that requires DC power.

[0003] With the continuous development of electronic technology, more and more functional requirements are placed on switching power supplies, among which the waterproof performance requirements of switching power supplies are particularly important. The traditional method of waterproofing switching power supplies is mainly to waterproof the open source and transmission lines by adding a waterproof cover or by wrapping a waterproof tape. However, this waterproof method is relatively crude, and water vapor can easily enter the device from the connection of the power supply casing or the lead hole, causing equipment failure and performance degradation, and may even cause safety problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a waterproof switching power supply to solve the background technical problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A waterproof switching power supply comprises a power supply housing, wherein the power supply housing comprises an upper power supply housing and a lower power supply housing which are arranged opposite to each other in the upper and lower directions, a circuit board arranged inside the power supply housing and leads connected to the circuit board, a sealing block is fixedly connected to the bottom edge of the upper power supply housing, a sealing groove is provided at the top edge of the lower power supply housing corresponding to the sealing block, a sealing airbag adapted to the sealing airbag is provided in the sealing groove, and a locking mechanism is provided at the outer connection between the upper power supply housing and the lower power supply housing.

[0007] An inflation mechanism for sealing the inflation of the airbag is arranged on the outer side of the lower shell of the power supply, a waterproof connector is injection-molded on the surface of the lead, a connector clamping part adapted to the waterproof connector is provided on the upper shell and the lower shell of the power supply, the waterproof connector is clamped and connected with the connector clamping part, the connector clamping part is integrally formed with the power supply shell, and a sealing gasket is arranged inside the connector clamping part.

[0008] As a further description of the above technical solution: the locking mechanism includes two connecting blocks, which are respectively fixedly connected to the edges of the connection between the upper shell of the power supply and the lower shell of the power supply, and the two connecting blocks are interspersed with bolts threadedly connected to them, and the upper shell of the power supply and the lower shell of the power supply are locked by the connecting blocks and the bolts.

[0009] As a further description of the above technical solution: the inflation mechanism includes an inflation block, which is fixedly mounted on the surface of the lower shell of the power supply and located below the connecting block. The inflation block is connected to an air pipe near the bottom, and the air pipe is connected to a sealing airbag. A piston block is arranged inside the inflation block and above the air pipe. The inflation block is filled with gas below the piston block. An opening is provided on the top of the inflation block, and the bottom end of the bolt extends through the opening into the inflation block and contacts the piston block.

[0010] As a further description of the above technical solution: a plurality of limit rods are fixedly connected to the top of the piston block, and the top ends of the limit rods penetrate and extend to the top of the inflatable block and are fixedly connected to the limit block.

[0011] As a further description of the above technical solution: a plurality of heat sinks are provided on the top of the power supply upper shell and the outer side surface of the power supply lower shell.

[0012] As a further description of the above technical solution: the surface of the waterproof joint is in a continuous concave-convex stepped shape.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] 1. This scheme improves the switching power supply casing by providing a sealing groove and a sealing block between the upper and lower shells of the power supply and locking and fixing them through a locking mechanism to ensure the tight closure of the casing connection. In addition, by adding a sealing airbag and an inflation mechanism, the waterproof performance of the power supply is further enhanced.

[0015] 2. This solution can effectively prevent the waterproof connector from being separated from the lead surface by injection molding the waterproof connector on the lead, and cooperate with the connector clamping part and the sealing gasket to limit the waterproof connector and ensure the waterproof and dustproof effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model in which the upper shell and the lower shell of the power supply are separated;

[0018] Figure 3 This is a schematic diagram of the structure of the sealing gasket of the utility model;

[0019] Figure 4It is a structural schematic diagram of the inflation mechanism of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the connection between the inflation mechanism and the sealing gas of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Power supply upper shell; 2. Power supply lower shell; 3. Circuit board; 4. Lead wire; 5. Sealing block; 6. Sealing groove; 7. Sealing airbag; 8. Locking mechanism; 81. Connecting block; 82. Bolt; 9. Inflating mechanism; 91. Inflating block; 92. Air pipe; 93. Piston block; 94. Opening; 95. Limit rod; 96. Limit block; 10. Waterproof connector; 11. Connector clamping part; 12. Sealing pad; 13. Heat sink. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-5 The waterproof switching power supply comprises a power supply housing, the power supply housing comprises an upper power supply housing 1 and a lower power supply housing 2 arranged opposite to each other, a circuit board 3 arranged inside the power supply housing and a lead 4 connected to the circuit board 3, a sealing block 5 is fixedly connected to the bottom edge of the upper power supply housing 1, a sealing groove 6 is provided at the top edge of the lower power supply housing 2 corresponding to the sealing block 5, and a locking mechanism 8 is provided at the outer connection between the upper power supply housing 1 and the lower power supply housing 2; the locking mechanism 8 comprises two connecting blocks 81, the two connecting blocks 81 are respectively fixedly connected to the edges of the connection between the upper power supply housing 1 and the lower power supply housing 2, and bolts 82 threadedly connected thereto are inserted on the two connecting blocks 81, and the upper power supply housing 1 and the lower power supply housing 2 are locked by the connecting blocks 81 and the bolts 82. The sealing groove 6 and the sealing block 5 are provided between the upper and lower power supply housings and locked and fixed by the locking mechanism 8 to ensure the tight closure of the housing connection. The locking mechanism 8 can achieve tight locking of the power supply upper shell 1 and the power supply lower shell 2 by rotating the bolt 82 when the sealing block 5 is correctly inserted into the sealing groove 6, thereby ensuring the tight closure of the shells and effectively preventing the intrusion of moisture.

[0026] The design of the locking mechanism 8 is not only simple and reliable, but also easy to disassemble and maintain, thus providing convenience for the installation and maintenance of the power supply.

[0027] Furthermore, a sealing airbag 7 adapted thereto is provided in the sealing groove 6, and an inflation mechanism 9 for inflating the sealing airbag 7 is provided on the outer side of the power supply lower shell 2. By adding the sealing airbag 7 and the inflation mechanism 9, the sealing property of the connection between the power supply upper shell 1 and the power supply lower shell 2 is further enhanced, and the waterproof effect is improved.

[0028] The inflatable mechanism 9 includes an inflatable block 91, which is fixedly mounted on the surface of the lower shell 2 of the power supply and is located below the connecting block 81. The inflatable block 91 is connected to an air pipe 92 near the bottom, and the air pipe 92 is connected to the sealing airbag 7. A piston block 93 is arranged in the inflatable block 91 and above the air pipe 92. The inflatable block 91 and below the piston block 93 are filled with gas. An opening 94 is provided at the top of the inflatable block 91. The bottom end of the bolt 82 extends through the opening 94 into the inflatable block 91 and contacts the piston block 93. When the bolt 82 rotates and moves downward, the piston block 93 is pushed, thereby compressing the gas in the inflatable block 91. The gas enters the sealing airbag 7 through the air pipe 92, causing the sealing airbag to expand and tightly fill the sealing groove 6, further enhancing the waterproof performance of the power supply. The design of this inflatable mechanism not only improves the sealing effect, but also simplifies the operation process, making the installation and maintenance of the power supply more convenient.

[0029] In addition, in order to ensure the stability and accuracy of the piston block 93 during the inflation process, a plurality of limiting rods 95 are fixedly connected to the top of the piston block 93, and the top ends of the limiting rods 95 penetrate and extend to the top of the inflation block 91 and are fixedly connected to the limiting blocks 96. The design of the limiting rods 95 and the limiting blocks 96 not only limits the movement range of the piston block 93 to prevent it from deflecting during the inflation process, but also ensures the smooth progress of the inflation process, thereby improving the inflation efficiency and sealing effect of the sealed airbag 7.

[0030] Example 2

[0031] Based on the above embodiments, Figure 2 , 3As shown, the surface of the lead 4 is injection molded with a waterproof connector 10, and the surface of the waterproof connector 10 is in a continuous concave-convex step shape. The upper shell 1 of the power supply and the lower shell 2 of the power supply are both provided with a connector clamping part 11 adapted to the waterproof connector 10, and the waterproof connector 10 is connected with the connector clamping part 11 by clamping, and the connector clamping part 11 is integrally formed with the power supply shell, and a sealing gasket 12 is arranged in the connector clamping part 11. The waterproof connector 10 and the outer surface of the lead 4 are connected as a whole by injection molding and melting, which can effectively prevent the waterproof connector 10 from being separated from the outer surface of the lead 4, realize seamless connection and cooperation between the two, and improve their connection strength and waterproof effect; in addition, the waterproof connector 10 on the lead 4 is connected with the connector clamping part formed on the upper shell 1 of the power supply and the lower shell 2 of the power supply by clamping, and when the upper and lower shells are locked, it can effectively prevent the lead 4 from being separated from the threading hole formed between the upper and lower connector clamping parts 11. In addition, when the lead 4 is pulled by force, the connection between the lead 4 and the circuit board 3 will not be loosened, thereby improving its safety in use. The surface of the waterproof connector 10 is designed as a continuous concave-convex step, which not only increases the mechanical strength of the connector, but also improves its waterproof performance. The sealing pad 12 further enhances the sealing effect between the waterproof connector 10 and the housing, thereby forming an effective waterproof barrier at the connection of the lead 4.

[0032] In addition, a plurality of heat sinks 13 are provided on the top of the power supply upper shell 1 and the outer side surface of the power supply lower shell 2, thereby improving the heat dissipation effect of the switching power supply.

[0033] In summary, this solution significantly improves the waterproof performance of the switching power supply through the innovative design of the switching power supply housing and lead 4, meets the use requirements of modern electronic equipment in complex environments, and provides strong support for the stable operation of electronic equipment.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A waterproof switching power supply, comprising a power supply housing, wherein the power supply housing comprises a power supply upper housing (1) and a power supply lower housing (2) arranged opposite to each other, a circuit board (3) arranged inside the power supply housing, and a lead (4) connected to the circuit board (3), wherein: The bottom edge of the power supply upper shell (1) is fixedly connected with a sealing block (5), the top edge of the power supply lower shell (2) is provided with a sealing groove (6) corresponding to the sealing block (5), a sealing airbag (7) adapted thereto is provided in the sealing groove (6), and a locking mechanism (8) is provided at the outer connection between the power supply upper shell (1) and the power supply lower shell (2); An inflation mechanism (9) for inflating the sealing airbag (7) is arranged on the outer side of the power supply lower shell (2); a waterproof connector (10) is injection-molded on the surface of the lead wire (4); a connector clamping portion (11) adapted to the waterproof connector (10) is provided on both the power supply upper shell (1) and the power supply lower shell (2); the waterproof connector (10) is connected to the connector clamping portion (11) by clamping; the connector clamping portion (11) is integrally formed with the power supply shell; and a sealing gasket (12) is arranged inside the connector clamping portion (11).

2. The waterproof switching power supply according to claim 1, characterized in that: The locking mechanism (8) comprises two connecting blocks (81), the two connecting blocks (81) being fixedly connected to the edges of the connection between the power supply upper shell (1) and the power supply lower shell (2), respectively, and bolts (82) threadedly connected thereto are inserted through the two connecting blocks (81), and the power supply upper shell (1) and the power supply lower shell (2) are locked by means of the connecting blocks (81) and the bolts (82).

3. The waterproof switching power supply according to claim 2, characterized in that: The inflation mechanism (9) comprises an inflation block (91), the inflation block (91) is fixedly mounted on the surface of the power supply lower shell (2) and is located below the connection block (81), the inflation block (91) is connected to an air pipe (92) near the bottom, the air pipe (92) is connected to the sealing airbag (7), a piston block (93) is arranged inside the inflation block (91) and above the air pipe (92), the inflation block (91) and below the piston block (93) is filled with gas, an opening (94) is provided at the top of the inflation block (91), and the bottom end of the bolt (82) extends into the inflation block (91) through the opening (94) and contacts the piston block (93).

4. The waterproof switching power supply according to claim 3, characterized in that: A plurality of limiting rods (95) are fixedly connected to the top of the piston block (93), and the top ends of the limiting rods (95) penetrate and extend to the top of the inflation block (91) and are fixedly connected to the limiting block (96).

5. The waterproof switching power supply according to claim 1, characterized in that: A plurality of heat sinks (13) are provided on the top of the power supply upper shell (1) and the outer side surface of the power supply lower shell (2).

6. The waterproof switching power supply according to claim 1, characterized in that: The surface of the waterproof joint (10) is in a continuously concave-convex stepped shape.

Images