A switching power supply with high protection level

Abstract

The present invention relates to the field of switching power supplies, and in particular to a switching power supply with a high protection level, comprising a base, wherein a circuit board is installed inside the base. The present invention uses two-speed adjustment of an electric push rod, so that the first-speed adjustment of the electric push rod can make the heat dissipation hole and the conical through hole dislocated and the sealing plate rotate to close the inside of the through cavity, and the second-speed adjustment of the electric push rod can make the socket 1 and the rod-shaped plug 1 disengaged, and the rod-shaped plug 2 and the socket 2 plugged at the same time, so that the switching power supply is powered off and the buzzer alarm is alarmed, and the two-speed control of the electric push rod is controlled in real time by a controller according to the monitoring data of a temperature sensor and a smoke sensor. Through this structure, the switching power supply can be protected from dust without affecting the internal heat dissipation, and the working environment of the circuit board can be in a relatively stable state. At the same time, active alarms can be made according to the fire situation and the air can be isolated to achieve the effect of fire extinguishing, which effectively improves the protection ability of the switching power supply.

Description

Technical Field

[0001] The invention relates to the field of switching power supplies, and in particular to a switching power supply with a high protection level. Background Art

[0002] A switching power supply, also known as an exchange power supply or a switching converter, is a high-frequency power conversion device and a type of power supply. The basic working principle of a switching power supply is to switch the input voltage into a high-frequency pulse signal through the switching action of a switch tube. This high-frequency pulse signal is transformed by a transformer or inductor and processed by a filter circuit to ultimately obtain a stable DC output voltage. The output voltage of a switching power supply can be adjusted and stabilized as needed to meet the power requirements of different devices.

[0003] The patent application with announcement number CN211429188U is a switching power supply outer box and a switching power supply, including a heat dissipation cover, a rubber support, a pressure piece, a connecting buckle, a support wall, a mounting frame, a base plate and a slide bar. The base plate is arranged on the lower end surface of the switch box body, the support wall is fixed to the right side of the upper end surface of the base plate, a mounting frame is welded on the front side of the inner wall of the support wall, a connecting buckle is fixed on the right side of the upper end surface of the support wall, the heat dissipation cover is assembled on the left side of the upper end surface of the base plate, the slide bar is fixed on the lower end surface of the heat dissipation cover, the rubber support is fixed on the front side of the inner wall of the heat dissipation cover, and the pressure piece is assembled inside the rubber support. This design solves the problem that the original switching power supply lacks an outer box with a combination function and the switching power supply is not easy to disassemble and assemble. The patent design has a reasonable structure, which is convenient for the effective fixing and support of the switching power supply, and the outer box is easy to combine, install and disassemble.

[0004] During the use of the existing switching power supply, since heat dissipation is required, its shell is generally hollowed out. Although this design can ensure heat dissipation, it cannot avoid dust from entering, so that the surface of the internal circuit board is covered with dust. Moreover, due to the semi-exposed design, if the air temperature is low, both situations will affect its use. If a closed design is adopted, its heat dissipation performance will be affected. In addition, during the use of the existing switching power supply, a short circuit may occur during its operation, and a fire is likely to occur after a short circuit. Since it has no effective protection, it affects its safety in use. Therefore, it can be seen that the existing switching power supply has great hidden dangers in terms of dust protection and safety protection during its use.

[0005] Therefore, it is necessary to invent a switching power supply with a high protection level to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a switching power supply with a high protection level. By moving the protective plate, the protective frame can be in two states: connected and closed with the outside world, so that real-time adjustment can be made according to the operating temperature of the circuit board. The switching power supply can be cut off as a whole by moving the protective plate, and a buzzer alarm can be used to prevent fire, so as to solve the problem in the prior art that the switching power supply has no effective protection and there is a great safety hazard when in use.

[0007] In order to achieve the above object, the present invention provides the following technical solution: a switching power supply with a high protection level, comprising a base, a circuit board is installed inside the base, a protection frame is installed on one side of the base, and the protection frame covers the circuit board, a protection plate is arranged inside the protection frame, and a plurality of heat dissipation holes are provided on the surface of the protection plate;

[0008] The driving assembly arranged in the protection frame includes a baffle plate, which is installed on the inner wall of the protection frame, and a plurality of groups of tapered through holes are provided on the surface of the baffle plate, and the number of the tapered through holes is the same as the number of the heat dissipation holes, and sliding plates are symmetrically installed on both sides of the protection plate, and sliding grooves are symmetrically provided on the inner wall of the protection frame, and the sliding grooves are slidably connected with the sliding plates;

[0009] The power-off alarm assembly arranged on the protection plate and the protection frame includes a socket 1, which is installed above the protection frame and electrically connected to the circuit board. A fixing seat is installed above the protection plate, a rod-shaped plug 1 is connected through the fixing seat, and the rod-shaped plug 1 is electrically connected to an external power source, and the rod-shaped plug 1 is plugged into the socket 1;

[0010] The protection component arranged on one side of the protection frame includes a through cavity, which is opened on one side of the protection frame. Multiple groups of sealing plates are rotatably connected in the through cavity, and each group of sealing plates covers the internal space of the through cavity.

[0011] As a preferred solution of the present invention, the driving assembly also includes a connecting plate, a limiting block is installed below the connecting plate, a limiting groove is opened above the base and the protective frame, and the limiting groove is slidably connected to the limiting block, a connecting seat is installed on one side of the connecting plate, and the connecting seat is fixedly connected to the top of the protective frame.

[0012] As a preferred solution of the present invention, an electric push rod is installed on one side of the base, and the output end of the electric push rod is fixedly connected to the side of the connecting plate away from the connecting seat, the electric push rod is provided with two gears, a controller is installed on the inner wall of the base, and the controller is electrically connected to the electric push rod, and the controller is used to control the movement of the electric push rod.

[0013] As a preferred solution of the present invention, a temperature sensor is installed on the inner wall of the base, and the temperature sensor is electrically connected to the controller. A smoke sensor is installed on the inner wall of the base, and the smoke sensor is electrically connected to the controller. A buzzer alarm is installed under the base, and the buzzer alarm is electrically connected to the controller.

[0014] As a preferred solution of the present invention, the power off alarm assembly also includes a limit ring, which is sleeved and fixed on a rod-shaped plug. A spring is sleeved on the rod-shaped plug, and two sides of the spring are respectively fitted with the limit ring and the fixing seat.

[0015] As a preferred solution of the present invention, a rod-shaped plug 2 is installed on the side of the protective plate away from the rod-shaped plug 1, and the rod-shaped plug 2 is electrically connected to the external power supply, a socket 2 is installed on the protective frame away from the socket 1, and the socket 2 is electrically connected to the buzzer alarm, and the socket 2 and the rod-shaped plug 2 are located at the same horizontal position.

[0016] As a preferred solution of the present invention, the protection assembly also includes a rotating arm, which is rotated downward in sequence and connected to the outside of the protection frame, and the rotating arm is axially connected to the corresponding sealing plate, and a sliding cavity is opened on the surface of each group of the rotating arms.

[0017] As a preferred solution of the present invention, a positioning seat is installed on the outside of the protective frame, a push shaft is connected through the positioning seat, a top block is installed above the push shaft, a second spring is sleeved on the push shaft, and both sides of the second spring are respectively in contact with the top block and the positioning seat.

[0018] As a preferred solution of the present invention, multiple groups of docking rods are installed on one side of the push shaft, and the docking rods are slidably connected to the corresponding sliding cavities, a fixing ring is installed on the outside of the protective frame, a conical rod is connected through the fixing ring, and the conical rod is fixedly connected to the outside of the protective plate, and the lower part of the conical rod is in contact with the top block.

[0019] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0020] Through the two-speed adjustment of the electric push rod, the protective plate can be moved two distances. The first-speed adjustment of the electric push rod can make the heat dissipation hole and the tapered through hole misaligned and the sealing plate rotate to close the inside of the through cavity, so that the inside of the protective frame is in a sealed environment. The second-speed adjustment of the electric push rod can not only achieve the above-mentioned effect, but also disengage the socket one and the rod-shaped plug one, and connect the rod-shaped plug two and the socket two at the same time, so that the switching power supply is powered off and the buzzer alarm is sounded at the same time. The two-speed control of the electric push rod is controlled in real time by the controller according to the monitoring data of the temperature sensor and the smoke sensor. Through this structure, the switching power supply can be protected from dust without affecting the internal heat dissipation, and the working environment of the circuit board can be kept in a relatively stable state. At the same time, active alarms and air isolation can be performed according to the fire situation to achieve the effect of fire extinguishing, which effectively improves the protection capability of the switching power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the base structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the connection structure between the protection frame and the protection plate of the present invention;

[0025] Figure 4 It is a schematic diagram of the baffle structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the connection structure between the circuit board and the base of the present invention;

[0027] Figure 6 It is a schematic diagram of the layout structure of the tapered through hole of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the protective plate of the present invention;

[0029] Figure 8 It is a schematic diagram of the connecting plate structure of the present invention;

[0030] Fig. 9 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0031] Fig.10 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0032] Fig.11 For the present invention Figure 3 Enlarged structural diagram at point C in the middle.

[0033] Description of reference numerals:

[0034] 001, base; 101, circuit board; 102, protection frame; 103, protection plate; 104, heat dissipation hole; 002, drive assembly; 201, baffle; 202, tapered through hole; 203, sliding plate; 204, slide groove; 205, connecting plate; 206, limit block; 207, limit groove; 208, connecting seat; 209, electric push rod; 210, controller; 211, temperature sensor; 212, smoke sensor; 213, buzzer alarm; 00 3. Power-off alarm assembly; 301. Socket 1; 302. Fixed seat; 303. Rod-shaped plug 1; 304. Limiting ring; 305. Spring 1; 306. Rod-shaped plug 2; 307. Socket 2; 004. Protection assembly; 401. Through cavity; 402. Sealing plate; 403. Rotating arm; 404. Sliding cavity; 405. Positioning seat; 406. Push shaft; 407. Top block; 408. Spring 2; 409. Conical rod; 410. Fixed ring; 411. Docking rod. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] The present invention provides Figure 1-11 A switching power supply with a high protection level is shown, comprising a base 001, a circuit board 101 is installed inside the base 001, a protection frame 102 is installed on one side of the base 001, and the protection frame 102 covers the circuit board 101, a protection plate 103 is arranged inside the protection frame 102, and a plurality of heat dissipation holes 104 are provided on the surface of the protection plate 103;

[0037] The circuit board 101 can be protected by the protection plate 103 and the protection frame 102 , and the heat dissipation holes 104 can dissipate the heat in the protection frame 102 .

[0038] The driving assembly 002 disposed in the protection frame 102 includes a baffle 201, which is mounted on the inner wall of the protection frame 102. A plurality of groups of tapered through holes 202 are provided on the surface of the baffle 201, and the number of the tapered through holes 202 is the same as that of the heat dissipation holes 104. Sliding plates 203 are symmetrically mounted on both sides of the protection plate 103. Sliding grooves 204 are symmetrically provided on the inner wall of the protection frame 102, and the sliding grooves 204 are slidably connected to the sliding plates 203.

[0039] The heat in the protective frame 102 can be dissipated through the conical through hole 202 along the heat dissipation hole 104, and the conical design of the conical through hole 202 can prevent external dust from entering the protective frame 102. The cooperation between the slide groove 204 and the sliding plate 203 can make the protective plate 103 slide in the protective frame 102, thereby changing the position of the heat dissipation hole 104 and the conical through hole 202, and realizing the conical through hole 202 being connected to the outside or closed.

[0040] The power failure alarm component 003 arranged on the protection plate 103 and the protection frame 102 includes a socket 1 301, which is installed above the protection frame 102 and is electrically connected to the circuit board 101. A fixing seat 302 is installed above the protection plate 103, and a rod-shaped plug 1 303 is connected through the fixing seat 302, and the rod-shaped plug 1 303 is electrically connected to an external power source, and the rod-shaped plug 1 303 is plugged into the socket 1 301;

[0041] By plugging the socket 301 and the rod-shaped plug 303 together, the circuit board 101 can be powered by an external power source, and the circuit board 101 can be powered off by disconnecting the two.

[0042] The protection component 004 disposed on one side of the protection frame 102 includes a through cavity 401 . The through cavity 401 is opened on one side of the protection frame 102 . A plurality of sealing plates 402 are rotatably connected in the through cavity 401 , and each sealing plate 402 covers the inner space of the through cavity 401 .

[0043] The through cavity 401 can be opened by rotating the sealing plate 402, so that the external air can enter the protection frame 102, thereby achieving air flow and heat dissipation.

[0044] Furthermore, in the above structure, the driving component 002 also includes a connecting plate 205, a limiting block 206 is installed below the connecting plate 205, a limiting groove 207 is opened above the base 001 and the protective frame 102, and the limiting groove 207 is slidably connected to the limiting block 206, a connecting seat 208 is installed on one side of the connecting plate 205, and the connecting seat 208 is fixedly connected to the top of the protective frame 102.

[0045] Through the cooperation between the limiting block 206 and the limiting groove 207 , the connecting plate 205 can slide more smoothly, and through the connecting seat 208 , the connecting plate 205 can drive the protective plate 103 to move.

[0046] Furthermore, in the above structure, an electric push rod 209 is installed on one side of the base 001, and the output end of the electric push rod 209 is fixedly connected to the side of the connecting plate 205 away from the connecting seat 208. The electric push rod 209 is provided with two gears. A controller 210 is installed on the inner wall of the base 001, and the controller 210 is electrically connected to the electric push rod 209. The controller 210 is used to control the movement of the electric push rod 209.

[0047] The controller 210 can control the first-gear adjustment of the electric push rod 209, so that the connecting plate 205 drives the protective plate 103 to move, so that the heat dissipation hole 104 and the tapered through hole 202 are misaligned, so that the inside of the tapered through hole 202 cannot be connected to the outside world. At this time, the rod-shaped plug 303 will not fall off from the socket 301, and the first-gear adjustment of the electric push rod 209 is based on the monitoring data of the temperature sensor 211, and the second-gear adjustment of the electric push rod 209 can make the rod-shaped plug 303 fall off from the socket 301, thereby realizing overall power off, and the adjustment of the electric push rod 209 is based on the monitoring data of the smoke sensor 212.

[0048] Furthermore, in the above structure, a temperature sensor 211 is installed on the inner wall of the base 001, and the temperature sensor 211 is electrically connected to the controller 210, a smoke sensor 212 is installed on the inner wall of the base 001, and the smoke sensor 212 is electrically connected to the controller 210, and a buzzer alarm 213 is installed under the base 001, and the buzzer alarm 213 is electrically connected to the controller 210.

[0049] The temperature inside the protective frame 102 can be detected by the temperature sensor 211. When the temperature is high, the conical through hole 202 can be opened, and when the temperature is low, it can be closed, so that the circuit board 101 can be maintained in a stable working environment. The smoke sensor 212 can detect whether there is a fire on the circuit board 101, and the priority of the smoke sensor 212 is higher than the temperature sensor 211, so as to avoid signal conflicts between the smoke sensor 212 and the temperature sensor 211 in case of fire.

[0050] Furthermore, in the above structure, the power off alarm component 003 also includes a limit ring 304, which is sleeved and fixed on the rod-shaped plug 303, and a spring 305 is sleeved on the rod-shaped plug 303, and the two sides of the spring 305 are respectively fitted with the limit ring 304 and the fixing seat 302.

[0051] By pushing the spring 1 305 , the protective plate 103 can firmly fix the rod-shaped plug 1 303 and the socket 1 301 during the first-stage adjustment movement of the electric push rod 209 .

[0052] Furthermore, in the above structure, a rod-shaped plug 2 306 is installed on the side of the protective plate 103 away from the rod-shaped plug 1 303, and the rod-shaped plug 2 306 is electrically connected to the external power supply, and a socket 2 307 is installed on the protective frame 102 away from the socket 1 301, and the socket 2 307 is electrically connected to the buzzer alarm 213, and the socket 2 307 and the rod-shaped plug 2 306 are located at the same horizontal position.

[0053] By adjusting the electric push rod 209 to the second gear, the rod-shaped plug 2 306 is connected to the socket 2 307, so that the buzzer alarm 213 is powered to produce a buzzer alarm effect, thereby avoiding the occurrence of fire.

[0054] Furthermore, in the above structure, the protection component 004 also includes a rotating arm 403, which is rotated downward in sequence and connected to the outside of the protection frame 102, and the rotating arm 403 is axially connected to the corresponding sealing plate 402, and a sliding cavity 404 is opened on the surface of each group of rotating arms 403.

[0055] The sealing plate 402 can be rotated in the through cavity 401 by rotating the rotating arm 403 , thereby realizing the opening and closing of the through space inside the through cavity 401 .

[0056] Furthermore, in the above structure, a positioning seat 405 is installed on the outside of the protective frame 102, a push shaft 406 is connected through the positioning seat 405, a top block 407 is installed above the push shaft 406, a spring 408 is sleeved on the push shaft 406, and the two sides of the spring 408 are respectively fitted with the top block 407 and the positioning seat 405.

[0057] By squeezing the spring 2 408 and the top block 407, the top block 407 can drive the push shaft 406 to always be in an upward state, so that the position of the sealing plate 402 is maintained, and the position here makes the space inside the through cavity 401 in an open state.

[0058] Furthermore, in the above structure, multiple groups of docking rods 411 are installed on one side of the push shaft 406, and the docking rods 411 are slidably connected to the corresponding sliding cavity 404, a fixing ring 410 is installed on the outside of the protective frame 102, a conical rod 409 is connected through the fixing ring 410, and the conical rod 409 is fixedly connected to the outside of the protective plate 103, and the lower part of the conical rod 409 is in contact with the top block 407.

[0059] Through the height difference in front of the conical rod 409, the conical rod 409 can push the top block 407 to move downward during the movement, so that the docking rod 411 slides along the sliding cavity 404 and drives the sealing plate 402 to rotate, so that the through cavity 401 is closed, and this action only requires the electric push rod 209 to adjust to the first gear to complete, and when the subsequent fire situation requires the electric push rod 209 to adjust to the second gear, this method can prevent air from entering the protection frame 102, thereby further improving the fire protection effect.

[0060] like Figure 1-11 As shown, the working temperature of the circuit board 101 is detected by the temperature sensor 211. When the temperature is low, the protective plate 103 can be displaced as a whole through the first gear adjustment of the electric push rod 209, so that the heat dissipation hole 104 and the tapered through hole 202 are misaligned, and the protective plate 103 covers the tapered through hole 202. At the same time, the tapered rod 409 on one side of the protective plate 103 moves to extrude the top block 407, so that the push shaft 406 is pressed down and drives the rotating arm 403 to rotate, so that the sealing plate 402 closes the through cavity 401. At this time, the working temperature of the circuit board 101 can be used to increase the working environment temperature, and as the work continues, the electric push rod 209 can be reset to make the heat dissipation hole 104 coincide with the tapered through hole 202, so as to perform normal heat dissipation.

[0061] And when the smoke sensor 212 detects a fire, the second gear adjustment of the electric push rod 209 can be used to disengage the socket 1 301 and the rod-shaped plug 1 303 to cut off the power as a whole. At the same time, the heat dissipation hole 104 and the tapered through hole 202 will also be misaligned, and the sealing plate 402 will cover the through cavity 401, so that the interior of the protection frame 102 is in a sealed state, so that the outside air cannot enter, thereby avoiding the spread of the fire. At the same time, the rod-shaped plug 2 306 and the socket 2 307 are plugged in, so that the buzzer alarm 213 alarms, thereby avoiding the increase of the fire. Through this structure, the switching power supply can be protected from dust without affecting the internal heat dissipation, and the working environment of the circuit board 101 can be kept in a relatively stable state. At the same time, active alarms can be given according to the fire situation and the air can be isolated to achieve the effect of fire extinguishing, effectively improving the protection capability of the switching power supply.

[0062] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A switching power supply with a high protection level, comprising a base (001), characterized in that: A circuit board (101) is installed inside the base (001), a protection frame (102) is installed on one side of the base (001), and the protection frame (102) covers the circuit board (101), a protection plate (103) is arranged inside the protection frame (102), and a plurality of heat dissipation holes (104) are provided on the surface of the protection plate (103); The driving component (002) disposed in the protection frame (102) comprises a baffle (201), the baffle (201) being mounted on the inner wall of the protection frame (102), a plurality of groups of tapered through holes (202) being provided on the surface of the baffle (201), and the number of the tapered through holes (202) and the number of the heat dissipation holes (104) being the same, sliding plates (203) being symmetrically mounted on both sides of the protection plate (103), sliding grooves (204) being symmetrically provided on the inner wall of the protection frame (102), and the sliding grooves (204) being slidably connected to the sliding plates (203); An electric push rod (209) is installed on one side of the base (001), and the output end of the electric push rod (209) is fixedly connected to a side of the connecting plate (205) away from the connecting seat (208), the electric push rod (209) is provided with two gears, a controller (210) is installed on the inner wall of the base (001), and the controller (210) is electrically connected to the electric push rod (209), and the controller (210) is used to control the movement of the electric push rod (209); The power-off alarm component (003) disposed on the protection plate (103) and the protection frame (102) comprises a socket one (301), wherein the socket one (301) is installed above the protection frame (102), and the socket one (301) is electrically connected to the circuit board (101), a fixing seat (302) is installed above the protection plate (103), a rod-shaped plug one (303) is connected through the fixing seat (302), and the rod-shaped plug one (303) is electrically connected to an external power source, and the rod-shaped plug one (303) is plugged into the socket one (301); A rod-shaped plug 2 (306) is installed on the side of the protective plate (103) away from the rod-shaped plug 1 (303), and the rod-shaped plug 2 (306) is electrically connected to an external power source; a socket 2 (307) is installed on the protective frame (102) away from the socket 1 (301), and the socket 2 (307) is electrically connected to the buzzer alarm (213), and the socket 2 (307) and the rod-shaped plug 2 (306) are located at the same horizontal position; The protection component (004) disposed on one side of the protection frame (102) comprises a through cavity (401), wherein the through cavity (401) is opened on one side of the protection frame (102), wherein a plurality of groups of sealing plates (402) are rotatably connected in the through cavity (401), and each group of sealing plates (402) covers the internal space of the through cavity (401).

2. A switching power supply with a high protection level according to claim 1, characterized in that: The driving assembly (002) further comprises a connecting plate (205), a limiting block (206) is installed below the connecting plate (205), a limiting groove (207) is provided above the base (001) and the protective frame (102), and the limiting groove (207) is slidably connected to the limiting block (206), a connecting seat (208) is installed on one side of the connecting plate (205), and the connecting seat (208) is fixedly connected to the top of the protective frame (102).

3. A switching power supply with a high protection level according to claim 1, characterized in that: A temperature sensor (211) is installed on the inner wall of the base (001), and the temperature sensor (211) is electrically connected to the controller (210); a smoke sensor (212) is installed on the inner wall of the base (001), and the smoke sensor (212) is electrically connected to the controller (210); a buzzer alarm (213) is installed below the base (001), and the buzzer alarm (213) is electrically connected to the controller (210).

4. A switching power supply with a high protection level according to claim 1, characterized in that: The power failure alarm assembly (003) further comprises a limit ring (304), wherein the limit ring (304) is sleeved and fixed on the rod-shaped plug one (303), and a spring one (305) is sleeved on the rod-shaped plug one (303), and two sides of the spring one (305) are respectively fitted with the limit ring (304) and the fixing seat (302).

5. The switching power supply with a high protection level according to claim 1, characterized in that: The protection assembly (004) further comprises a rotating arm (403), wherein the rotating arms (403) are rotated downward in sequence and connected to the outside of the protection frame (102), and the rotating arms (403) are axially connected to the corresponding sealing plate (402), and a sliding cavity (404) is provided on the surface of each group of the rotating arms (403).

6. A switching power supply with a high protection level according to claim 5, characterized in that: A positioning seat (405) is installed on the outside of the protection frame (102), a push shaft (406) is connected through the positioning seat (405), a top block (407) is installed above the push shaft (406), a second spring (408) is sleeved on the push shaft (406), and two sides of the second spring (408) are respectively fitted with the top block (407) and the positioning seat (405).

7. A switching power supply with a high protection level according to claim 6, characterized in that: A plurality of docking rods (411) are installed on one side of the push shaft (406), and the docking rods (411) are slidably connected to the corresponding sliding cavities (404). A fixing ring (410) is installed on the outside of the protection frame (102), and a conical rod (409) is connected through the fixing ring (410). The conical rod (409) is fixedly connected to the outside of the protection plate (103), and the lower part of the conical rod (409) is in contact with the top block (407).

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