Overpower protection device of switching power supply and driving power supply

Abstract

The invention relates to the technical field of power switches, in particular to an overpower protection device of a switching power supply and a driving power supply, and the overpower protection device comprises a power switch body, a central protection device movably connected with the power switch body, and an overvoltage protection adjusting device movably connected with the central protection device. When the protective tube is damaged and fused, the protective tube is replaced to ensure the normal work of the movable moving assembly, in the moving process of the movable moving assembly, an elastic conducting strip shrinks after deformation, the protective tube in a top mounting groove is exposed, and after a swing rod is pressed, a jacking rod at the other end of the swing rod tilts up, so that the movable moving assembly moves. The bottom of the protective tube is separated out after being pressed, and when the protective tube is fused, the fuse assembly can continue to work by replacing a new protective tube, so that compared with the replacement of the whole complex protective device or power supply system, the cost is much lower, the power is automatically cut off in the replacement process, and the safety in the replacement process is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power switches, and in particular to an overpower protection device for a switching power supply and a driving power supply. Background Art

[0002] The over-power protection (OPP) device in a switching power supply is an important safety mechanism used to prevent the power supply from damaging itself or the connected load when the output power exceeds the rated value. The following are some common switching power supply over-power protection devices and their working principles.

[0003] The over-power protection device of the switching power supply is realized by the fuse, and the fuse relies on the resistance wire to realize its function. When the resistance wire in the fuse is damaged, it is necessary to manually cut off the power to replace it. There are certain operational risks in the process of manually cutting off the power to replace the fuse. If the maintenance personnel operate improperly, such as not completely cutting off the power during the power-off operation, it may cause electric shock accidents. Summary of the invention

[0004] The object of the present invention is to provide an overpower protection device for a switching power supply and a driving power supply to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an overpower protection device of a switching power supply and a driving power supply, comprising a power switch body, a central protection device movably connected to the power switch body, and an overvoltage protection adjustment device movably connected to the central protection device, the power switch body is provided with an insertion slot on the side close to the central protection device, the central protection device is provided with an insertion portion on the side close to the power switch body, and the insertion portion is movably plugged into the insertion slot, the central protection device is also provided with an insertion slot on the side close to the overvoltage protection adjustment device, the overvoltage protection adjustment device is also provided with an insertion portion on the side close to the central protection device, and the overvoltage protection adjustment device is also provided with an insertion slot on the side away from the central protection device, and a movable movable component is movably installed in the rectangular installation slot opened on the central protection device, and the movable movable component The front and back sides of the component are provided with transverse mounting grooves, and a fixed conductive seat is movably installed in the transverse mounting groove, and the fixed conductive seat is fixedly installed at the center position of the front and back sides of the inner wall of the central protection device, and a circular power transmission seat is fixedly installed at the center position of the front and back sides of the movable moving component, and an elastic conductive sheet is fixedly installed on the fixed conductive seat, and an elastic conductive sheet is fixedly installed on the fixed conductive seat, and the elastic conductive sheet is movably engaged with the circular power transmission seat, and a top mounting groove is provided on the upper surface of the movable moving component, and a conductive end plate is fixedly installed at the position of the circular power transmission seat on the front and back sides of the inner wall of the top mounting groove, and an arc-shaped mounting plate is fixedly installed in the top mounting groove, and an arc-shaped pressure strip is fixedly installed on the top of the arc-shaped mounting plate, and a fuse is movably engaged and installed on the structure composed of the arc-shaped mounting plate and the arc-shaped pressure strip.

[0006] Preferably, the arc corresponding to the arc formed by the arc-shaped mounting plate and the arc-shaped pressure strip is a major arc.

[0007] Preferably, a rectangular lifting groove is opened on the arc-shaped mounting plate, two groups of fixed shaft seats are fixedly installed on the bottom of the inner wall of the top mounting groove, swing rods are rotatably connected in the fixed shaft seats, and a lifting rod is fixedly installed at the near end of one group of swing rods.

[0008] Preferably, a group of the swing rods have connecting frames fixedly mounted on opposite ends thereof, and a pressure plate fixedly mounted on the top of the connecting frame.

[0009] Preferably, the top and bottom of the circular power transmission base are provided with guide grooves, and limit strips are fixedly installed at the top and bottom of the inner wall of the rectangular installation groove at positions corresponding to the guide grooves.

[0010] Preferably, the power switch body, the central protection device and the overvoltage protection adjustment device are all fixedly installed with a fixing buckle, and a rectangular plate is fixedly installed on the fixing buckle close to the power switch body, the central protection device and the overvoltage protection adjustment device. The power switch body, the central protection device and the overvoltage protection adjustment device are all fixedly installed with an elastic insert strip, and a limiting card plate is fixedly installed on one end of the elastic insert strip corresponding to the fixing buckle, and the structure composed of the elastic insert strip and the limiting card plate is engaged in the structure composed of the fixing buckle and the rectangular plate.

[0011] Preferably, a rotatable adjustment rod is provided on the overvoltage protection adjustment device, and a calibrated groove is provided on the upper surface of the overvoltage protection adjustment device.

[0012] Preferably, an annular gear ring is provided in the overpressure protection adjusting device, a rotating rod is fixedly sleeved on the part of the rotatable adjusting rod located in the overpressure protection adjusting device, a circular column is fixedly installed on the end of the rotating rod away from the rotatable adjusting rod, an arc-shaped guide groove is opened at the bottom of the circular column at a position corresponding to the annular gear ring, an elastic telescopic component is provided in the arc-shaped guide groove, and the elastic telescopic component is supported at the corresponding position of the annular gear ring.

[0013] Preferably, the rotatable adjusting rod and the annular gear ring are coaxially arranged.

[0014] A driving power supply for an overpower protection device of a switching power supply comprises power supplies arranged on both sides of an overvoltage protection regulating device, a connecting plate is arranged between the power supplies for connection, and a detachable cover plate is movably installed on the power supplies.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the current is too large, the fuse is damaged and blows. The fuse needs to be replaced to ensure the normal operation of the movable moving component. During the movement of the movable moving component, the elastic conductive sheet will shrink after deformation, and the fuse in the top mounting groove will be exposed. When the swing arm is under pressure, the lifting rod at the other end of the swing arm will tilt up, and the bottom of the fuse will be detached after being under pressure. When the fuse blows, the fuse assembly can continue to work by replacing it with a new one. Compared with replacing the entire complex protection device or power supply system, the cost is much lower, and the power is automatically cut off during the replacement process, which greatly improves the safety of the replacement process.

[0017] 2. The rotatable adjusting rod drives the rotating rod to rotate, thereby driving the corresponding components in the overpressure protection adjusting device to rotate. The circular column will slide on the annular gear ring, and the elastic telescopic component will be subjected to the pressure of the inner wall of the annular gear ring. The elastic telescopic component that can be telescopically deformed applies pressure to the inner wall of the annular gear ring to ensure the accuracy of the rotatable adjusting rod during rotation. Even if the rotation angle slightly exceeds the scale, it can be automatically reset through the limit of the annular gear ring to ensure that the rotation angle is consistent with the actual adjustment angle.

[0018] 3. A battery is provided in the overvoltage protection regulating device. By replacing the battery, continuous power supply of the overvoltage protection regulating device is achieved. After the battery is installed in the overvoltage protection regulating device, the removable cover is installed in the power supply to fix the battery after installation, thereby ensuring continuous power supply of the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention.

[0020] Figure 2 It is a side view structural schematic diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure at the corresponding position of the rectangular installation groove of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the corresponding position of the movable moving component of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure at the corresponding position of the annular gear ring of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure at the corresponding position of the elastic insert of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the corresponding position of the rotating rod of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure at the corresponding position of the fixed conductive seat of the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure at the corresponding position of the arc-shaped mounting plate of the present invention.

[0028] Fig.10 It is a schematic diagram of the structure of the elastic conductive sheet of the present invention at the corresponding position.

[0029] Fig.11 It is a structural schematic diagram of the corresponding position of the circular power transmission base of the present invention.

[0030] Fig.12 It is a structural schematic diagram of the corresponding position of the swing rod of the present invention.

[0031] Fig.13 It is a schematic diagram of the structure at the corresponding position of the rectangular jacking groove of the present invention.

[0032] Fig.14 It is a structural schematic diagram of the corresponding position of the pressure plate of the present invention.

[0033] In the figure: 1, power switch body; 2, center protection device; 201, rectangular mounting groove; 3, overvoltage protection adjustment device; 4, insertion groove; 5, insertion part; 6, movable moving component; 601, horizontal mounting groove; 602, top mounting groove; 7, fixed conductive seat; 8, circular conductive seat; 9, elastic conductive sheet; 10, conductive end plate; 11, arc-shaped mounting plate; 1101, rectangular top groove; 12, arc-shaped pressure strip; 13, insurance tube; 14, fixed Fixed shaft seat; 15, swing rod; 16, lifting rod; 17, connecting frame; 18, pressure plate; 19, guide groove; 20, limit strip; 21, fixing buckle; 22, rectangular plate; 23, elastic insert strip; 24, limit card plate; 25, rotatable adjustment rod; 26, scale groove; 27, annular gear ring; 28, rotating rod; 29, circular column; 30, arc guide groove; 31, elastic telescopic component; 32, power supply; 33, connecting plate; 34, removable cover. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 14The present invention provides a technical solution: an overpower protection device of a switching power supply and a driving power supply, comprising a power switch body 1, a central protection device 2 movably connected to the power switch body 1, and an overvoltage protection adjustment device 3 movably connected to the central protection device 2. The power switch body 1 is a switch body. By pressing a button on the switch, the opening and closing of the power switch body 1 is controlled. The central protection device 2 is provided with a power protection component. The power protection operation is performed through a fuse 13. The central protection device 2 is used for overload protection to prevent excessive current from passing through. The overvoltage protection adjustment device 3 is used to adjust the effect of power protection. The power switch body 1 is provided with an insertion slot 4 near the central protection device 2. The central protection device 2 is close to the power switch body. An insertion portion 5 is provided on one side of the body 1, and the insertion portion 5 is movably inserted into the insertion groove 4. The insertion portion 5 is movably inserted into the insertion groove 4 to realize the composition of the power switch body 1 and the central protection device 2, and the assembly of the central protection device 2 and the overvoltage protection adjustment device 3 can also be realized. The power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 are assembled together, and corresponding components can be installed as needed. When the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 are individually damaged, the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 can also be replaced separately, which will not affect the use of the structure composed of the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3. The central protection device 2 An insertion slot 4 is also provided on the side close to the overvoltage protection regulating device 3, an insertion portion 5 is also provided on the side close to the central protection device 2 of the overvoltage protection regulating device 3, and an insertion slot 4 is also provided on the side of the overvoltage protection regulating device 3 away from the central protection device 2. A movable movable component 6 is movably installed in the rectangular installation slot 201 provided on the central protection device 2. The movable movable component 6 can be movably installed on the central protection device 2. Through the movable installation of the movable movable component 6 on the central protection device 2, it is convenient to remove the fuse 13 in the movable movable component 6, so as to realize the rapid replacement of the fuse 13. Both the front and back sides of the movable movable component 6 are provided with transverse installation slots 601, and a fixed conductive seat 7 is movably installed in the transverse installation slot 601. The fixed conductive seat 7 is fixedly installed at the center position of the front and back of the inner wall of the central protection device 2. During the process of pulling out the movable movable component 6, the fixed conductive seat 7 moves in the horizontal installation groove 601. At the same time, after the movable movable component 6 is moved, the fixed conductive seat 7 is misaligned with the circular conductive seat 8, and the fixed conductive seat 7 is no longer installed in the circular conductive seat 8, so that the fixed conductive seat 7 and the elastic conductive sheet 9 are separated. The circular conductive seat 8 is fixedly installed at the center position of the front and back of the movable movable component 6. The circular conductive seat 8 is electrically connected to the conductive end plate 10. After the fixed conductive seat 7 leaves the circular conductive seat 8, the fixed conductive seat 7 is no longer electrically connected to the conductive end plate 10. The fixed conductive seat 7 is fixedly installed with an elastic conductive sheet 9.The elastic conductive sheet 9 is composed of an energized spring sheet that can be deformed and conduct current. The elastic conductive sheet 9 is composed of an arc portion and a bent portion. The elastic conductive sheet 9 is deformed under pressure. The elastic conductive sheet 9 moves in the horizontal mounting groove 601 to separate the structure composed of the fixed conductive seat 7 and the elastic conductive sheet 9 from the circular conductive seat 8. The elastic conductive sheet 9 is fixedly mounted on the fixed conductive seat 7. The elastic conductive sheet 9 is movably engaged with the circular conductive seat 8. A top mounting groove 602 is provided on the upper surface of the movable movable component 6. The top mounting groove 602 is trapezoidal. To ensure the installation of the fuse 13, a conductive end plate 10 is fixedly installed at the position of the circular power transmission seat 8 on the front and back of the inner wall of the top installation groove 602. An arc-shaped installation plate 11 is fixedly installed in the top installation groove 602. An arc-shaped pressure strip 12 is fixedly installed on the top of the arc-shaped installation plate 11. The arc-shaped installation plate 11 and the arc-shaped pressure strip 12 form a structure on which a fuse 13 is movably installed. The fuse 13 is movably installed between the two conductive end plates 10. When the current passing through the circuit is too large, the fuse 13 is melted to achieve overload protection after the current is too large.

[0036] The arc corresponding to the structure composed of the arc-shaped mounting plate 11 and the arc-shaped pressure strip 12 is a major arc, and the fuse tube 13 is movably engaged in the arc-shaped mounting plate 11. The arc-shaped pressure strip 12 positions and engages the installation of the fuse tube 13. After the arc-shaped pressure strip 12 is deformed, the fuse tube 13 can be stably engaged in the structure composed of the arc-shaped mounting plate 11 and the arc-shaped pressure strip 12, thereby ensuring the installation stability of the fuse tube 13.

[0037] A rectangular lifting groove 1101 is provided on the arc-shaped mounting plate 11, and two groups of fixed shaft seats 14 are fixedly installed on the bottom of the inner wall of the top mounting groove 602. A swing rod 15 is rotatably connected in the fixed shaft seat 14, and a lifting rod 16 is fixedly installed at the near end of a group of swing rods 15. When the end of the swing rod 15 away from the lifting rod 16 is pressed, the lifting rod 16 is tilted up. The lifting rod 16 is located in the rectangular lifting groove 1101, and the lifting rod 16 applies pressure to the corresponding part of the bottom of the fuse tube 13 to tilt the fuse tube 13, thereby realizing the replacement of the fuse tube 13, and the lifting rod 16 corresponds to the harder parts at both ends of the fuse tube 13, so that when the fuse tube 13 is under pressure, the fuse tube 13 is not easily damaged, and the replacement of the fuse tube 13 is convenient.

[0038] A connecting frame 17 is fixedly installed on the opposite ends of a group of swing rods 15, and a pressure plate 18 is fixedly installed on the top of the connecting frame 17. When the pressure plate 18 is pressed, the pressure plate 18 transfers the pressure to the connecting frame 17 after being compressed. After the connecting frame 17 is compressed, it transfers the pressure to the swing rod 15. After the swing rod 15 is compressed, it transfers the pressure to the lifting rod 16. The lifting rod 16 applies pressure to the bottom of the fuse tube 13, thereby better assisting the replacement of the fuse tube 13.

[0039] Guide grooves 19 are provided at the top and bottom of the circular power transmission base 8, and limit strips 20 are fixedly installed at the top and bottom of the inner wall of the rectangular mounting groove 201 at the positions corresponding to the guide grooves 19. The movement of the movable movable component 6 is limited by the limit strips 20. The limit strips 20 are located in the guide grooves 19. During the movement of the movable movable component 6, the limit strips 20 limit the movement of the movable movable component 6, thereby further improving the stability of the movement of the movable movable component 6.

[0040] The power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 are all fixedly installed with a fixed buckle 21, and a rectangular plate 22 is fixedly installed on the fixed buckle 21 near the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3. The power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 are all fixedly installed with an elastic insert 23, and a limit card plate 24 is fixedly installed on one end of the elastic insert 23 corresponding to the fixed buckle 21. The elastic insert 23 and the limit card plate 24 form a structure that is snapped on the fixed buckle The structure composed of the buckle 21 and the rectangular plate 22, the structure composed of the elastic strip 23 and the limiting card plate 24 is engaged in the structure composed of the fixed buckle 21 and the rectangular plate 22, the elastic strip 23 is deformed to ensure that the limiting card plate 24 can be inserted into the structure composed of the fixed buckle 21 and the rectangular plate 22, the elastic strip 23 is inserted into the structure composed of the fixed buckle 21 and the rectangular plate 22, and the limiting card plate 24 plays a limiting role to prevent the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 from being easily disassembled after the structure is assembled.

[0041] The overvoltage protection regulating device 3 is provided with a rotatable regulating rod 25 , and a scale groove 26 is provided on the upper surface of the overvoltage protection regulating device 3 . Adjustment is performed by rotating the rotatable regulating rod 25 , and the size of the rotation angle is observed through the scale groove 26 .

[0042] An annular gear ring 27 is arranged in the overpressure protection regulating device 3, a rotating rod 28 is fixedly sleeved on the part of the rotatable regulating rod 25 located in the overpressure protection regulating device 3, a circular column 29 is fixedly installed on the end of the rotating rod 28 away from the rotatable regulating rod 25, an arc-shaped guide groove 30 is provided at the bottom of the circular column 29 at a position corresponding to the annular gear ring 27, an elastic telescopic component 31 is arranged in the arc-shaped guide groove 30, and the elastic telescopic component 31 is supported at a corresponding position of the annular gear ring 27, the rotatable regulating rod 25 rotates to drive the rotating rod 28 and the circular column 29 to rotate, thereby driving the circular column 29 to move on the annular gear ring 27, and the circular column 29 moves on the annular gear ring 27. During the movement on the annular gear ring 27, the elastic telescopic component 31 can be deformed. The elastic telescopic component 31 is composed of a circular part and an elastic part. The elastic part is generally a spring. The circular part of the elastic telescopic component 31 is driven to engage in the corresponding groove on the annular gear ring 27 through the expansion and contraction of the spring part, so as to realize the stopping operation during the rotation of the rotatable adjusting rod 25. The annular gear ring 27 is an internal gear ring. Through the cooperation of the annular gear ring 27 and the elastic telescopic component 31, the rotation of the structure composed of the rotating rod 28 and the circular column 29 is limited, so as to ensure that the rotating rod 28 and the circular column 29 stop after rotating to a suitable angle.

[0043] The rotatable adjusting rod 25 and the annular gear ring 27 are coaxially arranged.

[0044] A driving power supply for an overpower protection device of a switching power supply includes power supplies 32 arranged on both sides of an overvoltage protection adjustment device 3, a connecting plate 33 is arranged between the power supplies 32 for connection, a detachable cover plate 34 is movably installed on the power supply 32, a battery is installed in the power supply 32, and the battery is fixed in the power supply 32 after installation through the movably installed detachable cover plate 34, and the two power supplies 32 are fixed through the connecting plate 33.

[0045] Working principle:

[0046] Step 1: Before using the equipment, the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 need to be assembled, the elastic insert 23 on the power switch body 1 is deformed, the limit card plate 24 moves toward the side close to the power switch body 1, and the elastic insert 23 is inserted into the structure composed of the fixing buckle 21 and the rectangular plate 22. After the structure composed of the elastic insert 23 and the limit card plate 24 is engaged in the structure composed of the fixing buckle 21 and the rectangular plate 22, the elastic insert 23 and the limit card plate 24 are reset. The limit card plate 24 is used for limiting to ensure the fixing effect of the power switch body 1 and the central protection device 2 after they are assembled. Similarly, after the central protection device 2 and the overvoltage protection adjustment device 3 are assembled, the fixing of the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3 after assembly can also be achieved through the combination of the fixed buckle 21 and the rectangular plate 22 structure and the elastic insert 23 and the limit card plate 24 structure.

[0047] Step 2: Current flows in the structure composed of the power switch body 1, the central protection device 2 and the overvoltage protection adjustment device 3. When the current is too large, the fuse 13 is damaged and blown. The fuse 13 cannot be used anymore and needs to be replaced to ensure the normal operation of the movable movable component 6. When the fuse 13 is disassembled, the movable movable component 6 needs to be pulled outward. During the outward pulling of the movable movable component 6, the limit bar 20 moves in the guide groove 19 to limit the movable movable component 6 during its movement. During the movement of the movable movable component 6, the fixed conductive seat 7 will move in the transverse mounting groove 601. At the same time, the elastic conductive sheet 9 will also be subjected to the pressure of the transverse mounting groove 601. The elastic conductive sheet 9 will be deformed after being subjected to the pressure. The elastic conductive sheet 9 will shrink after being deformed to ensure the normal movement of the fixed conductive seat 7 in the transverse mounting groove 601. After the electric sheet 9 moves, the fixed conductive seat 7 and the circular conductive seat 8 are no longer electrically connected, so that there is no current on the movable movable assembly 6, and the power-off operation of the movable movable assembly 6 is realized. After the movable movable assembly 6 is removed, the fuse 13 in the top mounting groove 602 is exposed, and pressure is applied to the pressure plate 18. After the pressure is applied to the pressure plate 18, the pressure will be transferred to the connecting frame 17. After the connecting frame 17 is subjected to pressure, the pressure will be transferred to the swing rod 15. After the swing rod 15 is subjected to pressure, the lifting rod 16 at the other end of the swing rod 15 will tilt up, and the lifting rod 16 will apply pressure to the bottom of the fuse 13 in the structure composed of the arc-shaped mounting plate 11 and the arc-shaped pressure strip 12. After the bottom of the fuse 13 is subjected to pressure, the fuse 13 will be separated from the structure composed of the arc-shaped mounting plate 11 and the arc-shaped pressure strip 12, thereby realizing the replacement of the fuse 13. After the replacement of the fuse 13 is completed, the movable movable assembly 6 is reset.

[0048] The third step: rotate the rotatable adjusting rod 25, so that the rotatable adjusting rod 25 drives the rotating rod 28 to rotate, thereby driving the corresponding components in the overpressure protection adjusting device 3 to rotate. When the rotating rod 28 rotates, it drives the corresponding circular column 29 to rotate. The circular column 29 and the rotating rod 28 form a structure that rotates. The circular column 29 will slide on the annular gear ring 27. During the process of the elastic telescopic component 31 contacting the circumferential inner wall of the annular gear ring 27, the elastic telescopic component 31 will be subjected to the pressure of the inner wall of the annular gear ring 27. The elastic telescopic component 31 that can be telescopically deformed applies pressure to the inner wall of the annular gear ring 27, thereby achieving locking during the rotation of the rotatable adjusting rod 25, ensuring the accuracy of the rotatable adjusting rod 25 during rotation, and preventing the rotatable adjusting rod 25 from rotating too much or too little.

[0049] Step 4: A battery is provided in the overvoltage protection regulating device 3. By replacing the battery, continuous power supply of the overvoltage protection regulating device 3 is achieved. After the battery is installed in the overvoltage protection regulating device 3, the removable cover 34 is installed in the power supply 32 to fix the battery after installation, thereby ensuring continuous power supply of the power supply 32.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An overpower protection device for a switching power supply, characterized in that: The invention comprises a power switch body (1), a central protection device (2) movably connected to the power switch body (1), and an overvoltage protection regulating device (3) movably connected to the central protection device (2), wherein the power switch body (1) is provided with an insertion groove (4) on the side close to the central protection device (2), the central protection device (2) is provided with an insertion portion (5) on the side close to the power switch body (1), and the insertion portion (5) is movably plugged into the insertion groove (4), the central protection device (2) is also provided with an insertion groove (4) on the side close to the overvoltage protection regulating device (3), the overvoltage protection regulating device (3) is also provided with an insertion portion (5) on the side close to the central protection device (2), and the overvoltage protection regulating device (3) is also provided with an insertion groove (4) on the side away from the central protection device (2), and a movable movable component (6) is movably installed in a rectangular installation groove (201) provided on the central protection device (2), and the movable movable component (6) is provided with transverse installation grooves (601) on the front and back sides, and the transverse installation grooves (601) are provided on the front and back sides of the movable movable component (6). A fixed conductive seat (7) is movably mounted in the mounting groove (601), the fixed conductive seat (7) is fixedly mounted at the center position of the front and back sides of the inner wall of the central protection device (2), a circular conductive seat (8) is fixedly mounted at the center position of the front and back sides of the movable movable component (6), an elastic conductive sheet (9) is fixedly mounted on the fixed conductive seat (7), and an elastic conductive sheet (9) is fixedly mounted on the fixed conductive seat (7), and the elastic conductive sheet (9) is movably engaged with the circular conductive seat (8). ), a top mounting groove (602) is provided on the upper surface of the movable movable component (6), a conductive end plate (10) is fixedly installed at the positions of the front and back sides of the inner wall of the top mounting groove (602) corresponding to the circular power transmission seat (8), an arc-shaped mounting plate (11) is fixedly installed in the top mounting groove (602), an arc-shaped pressure strip (12) is fixedly installed on the top of the arc-shaped mounting plate (11), and a fuse (13) is movably mounted on the structure composed of the arc-shaped mounting plate (11) and the arc-shaped pressure strip (12).

2. The over-power protection device of a switching power supply according to claim 1, characterized in that: The arc formed by the arc-shaped mounting plate (11) and the arc-shaped pressure strip (12) is a major arc.

3. The over-power protection device of a switching power supply according to claim 2, characterized in that: The arc-shaped mounting plate (11) is provided with a rectangular lifting groove (1101), and two groups of fixed shaft seats (14) are fixedly installed at the bottom of the inner wall of the top mounting groove (602), and a swing rod (15) is rotatably connected inside the fixed shaft seat (14), and a lifting rod (16) is fixedly installed at the near end of one group of the swing rods (15).

4. The over-power protection device of a switching power supply according to claim 3, characterized in that: A connecting frame (17) is fixedly mounted on the opposite ends of a group of the swinging rods (15), and a pressure plate (18) is fixedly mounted on the top of the connecting frame (17).

5. The over-power protection device of a switching power supply according to claim 4, characterized in that: The top and bottom of the circular power transmission seat (8) are provided with guide grooves (19), and the top and bottom of the inner wall of the rectangular installation groove (201) are fixedly installed with limit strips (20) at positions corresponding to the guide grooves (19).

6. The over-power protection device of a switching power supply according to claim 5, characterized in that: The power switch body (1), the central protection device (2) and the overvoltage protection regulating device (3) are all fixedly mounted with a fixing buckle (21); a rectangular plate (22) is fixedly mounted on one side of the fixing buckle (21) close to the power switch body (1), the central protection device (2) and the overvoltage protection regulating device (3); an elastic inserting strip (23) is fixedly mounted on the power switch body (1), the central protection device (2) and the overvoltage protection regulating device (3); a limiting clamping plate (24) is fixedly mounted on one end of the elastic inserting strip (23) corresponding to the fixing buckle (21); and a structure composed of the elastic inserting strip (23) and the limiting clamping plate (24) is engaged in a structure composed of the fixing buckle (21) and the rectangular plate (22).

7. The over-power protection device of a switching power supply according to claim 6, characterized in that: The overvoltage protection regulating device (3) is provided with a rotatable regulating rod (25), and the upper surface of the overvoltage protection regulating device (3) is provided with a calibrated groove (26).

8. The over-power protection device of a switching power supply according to claim 7, characterized in that: An annular gear ring (27) is arranged in the overpressure protection adjustment device (3); a rotating rod (28) is fixedly sleeved on the part of the rotatable adjustment rod (25) located in the overpressure protection adjustment device (3); a circular column (29) is fixedly installed on one end of the rotating rod (28) away from the rotatable adjustment rod (25); an arc-shaped guide groove (30) is provided at the bottom of the circular column (29) at a position corresponding to the annular gear ring (27); an elastic telescopic component (31) is arranged in the arc-shaped guide groove (30); and the elastic telescopic component (31) is supported at a corresponding position of the annular gear ring (27).

9. The over-power protection device of a switching power supply according to claim 8, characterized in that: The rotatable adjusting rod (25) and the annular gear ring (27) are coaxially arranged.

10. A driving power supply for an overpower protection device of a switching power supply, used for an overpower protection device of a switching power supply according to any one of claims 1 to 9, characterized in that: It comprises power supplies (32) arranged on both sides of an overvoltage protection regulating device (3), a connecting plate (33) is arranged between the power supplies (32) for connection, and a detachable cover plate (34) is movably installed on the power supplies (32).

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