An AC-DC switching power supply and its usage method

Abstract

The present invention discloses an AC-DC switching power supply and its usage method. The present invention relates to the technical field of AC-DC switching power supplies, and includes a power supply housing, connection terminals, a conversion module, and an AC power connection port. The connection terminals are installed on the outer wall of the power supply housing, and the conversion module is installed on the inner wall of the power supply housing. The conversion module is used for converting alternating current to direct current. In the present invention, after an AC power supply is connected to the AC-DC switching power supply and the power button is pressed, the power is supplied through the conversion module. First, it is detected by the protection circuit, and the power enters the triode. If the power is stable, it is converted from AC to DC through the normal circuit and the access conversion circuit. If the input current is too high instantaneously, the triode is turned on to make it energized, and the relay is energized by the base of the triode to start and disconnect the circuit, protecting the circuit in a timely manner. And the warning component is started by the collector of the triode to further warn the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of AC-DC switching power supplies, and specifically to an AC-DC switching power supply and its usage method. Background Art

[0002] A DC switching power supply controls a switching transistor to conduct and cut off at high speed through a circuit, supplies alternating current to a transformer for voltage transformation to convert it into high-frequency direct current, thereby generating one or more sets of required voltages, and uses a rectifier, linear power supply, switching power supply, or ACDC power module, etc. A rectifier is a rectifying device, which simply means a device that converts alternating current (AC) into direct current (DC). A rectifying circuit is basically composed of a transformer, a main rectifying circuit, a filter capacitor circuit, a voltage stabilizing circuit, etc. Existing AC-DC switching power supplies cannot protect the circuit in time and cannot further warn the staff.

[0003] The defects of existing AC-DC switching power supplies are:

[0004] 1. Patent document CN110380629B discloses a quasi-resonant control circuit and device for a primary-side feedback AC-DC switching power supply. "Finally, after passing through the drive unit, a corresponding control signal is output to control the conduction or cut-off of the switching module; the counting unit counts according to the sequential triggering order of the first trigger signal and the second trigger signal, and transmits it to the conversion unit for digital-to-analog conversion, so as to adjust the output signal of the current limiting unit, so that the loop is turned on at the first trough or the second trough, thereby achieving the highest efficiency and the lowest electromagnetic interference resistance performance", but existing AC-DC switching power supplies cannot protect the circuit in time and cannot further warn the staff;

[0005] 2. Patent document CN208143075U discloses an anti-electric shock circuit for an AC-DC switching power supply. "An impedance judgment and control circuit is used to detect the voltage of the first switching transistor and output a corresponding output signal; an enable control circuit is used to receive the output signal of the impedance judgment and control circuit and output a corresponding control signal; a second switching transistor is used to conduct or cut off under the control of the enable control circuit. The above anti-electric shock circuit for an AC-DC switching power supply does not need to connect a sampling resistor and a high-voltage power transistor in series in the main power circuit, so the circuit loss is greatly reduced and the production cost is reduced", but existing AC-DC switching power supplies cannot enable the staff to arrive in time for maintenance;

[0006] 3. Patent document CN104300543A discloses an air conditioner protection circuit powered by a DC switching power supply and a power supply communication method for an air conditioner powered by a DC switching power supply. "Convert the DC voltage signal into an AC voltage signal; according to the conduction signal input by the processor, the protection device transmits the AC voltage signal to the power input terminal of the AC wired controller; the detection device detects the voltage signal at the power input terminal of the AC wired controller and transmits the detection result to the processor. The protection circuit provided by the embodiments of the present invention can solve the problem that when an air conditioner powered by a DC switching power supply and an air conditioner powered by an AC transformer are connected in parallel, the DC-to-AC conversion device in the air conditioner powered by the DC switching power supply is short-circuited and burned out", but the existing AC-to-DC switching power supply cannot quickly remove the protective cover, which is inconvenient for repairing the AC-to-DC switching power supply;

[0007] 4. Patent document CN106300632A discloses a DC uninterruptible remote power supply system. "The output of the high-voltage standby power module is connected in parallel with the output of the AC-to-high-voltage DC switching power supply module and then connected to the input terminal of the local distribution module; the input of the remote distribution module is connected to the output of the local distribution module through a power transmission cable, and several voltage output modules are connected in parallel to the output of the remote distribution module; both the local distribution module and the remote distribution module include circuit breakers. The advantages of the present invention are: reducing the power loss generated by voltage conversion, and the reasonable transmission voltage reduces the power consumption on the power transmission cable, improving the power transmission efficiency and power supply reliability", but the filter screen of the existing AC-to-DC switching power supply is not convenient to clean and accurately install. Summary of the Invention

[0008] The purpose of the present invention is to provide an AC-to-DC switching power supply and its usage method to solve the technical problems of being unable to protect the circuit in time and further warning the staff as mentioned in the above background technology.

[0009] To achieve the above purpose, the present invention provides the following technical solution: An AC-to-DC switching power supply includes a power supply housing, connection terminals, a conversion module, and an AC power connection port. The connection terminals are installed on the outer wall of the power supply housing, and the conversion module is installed on the inner wall of the power supply housing. The conversion module is used to convert alternating current into direct current, and the AC power connection port is provided on the outer wall of the power supply housing;

[0010] The conversion module includes a protection circuit, a conversion circuit, and a control circuit. The protection circuit is provided with a triode, a relay, a motor, and a diode. The control circuit is connected to the emitter of the triode. The base of the triode is connected to the coil of the relay. One end of the relay is connected to the diode, and the other end of the diode is connected to the control circuit. The collector of the triode is connected to the motor, and the contact wire of the motor is connected to the control circuit. The control circuit is connected to the conversion circuit and the protection circuit. The conversion circuit adopts a full-bridge rectifier circuit. An alarm component is installed on the inner wall of the power supply housing. The alarm component is used for alarming when the current is overloaded. The alarm component is electrically connected to the motor through a wire.

[0011] Preferably, a maintenance component is installed on the top of the power supply housing. The maintenance component is used for the maintenance of the AC-DC switching power supply. A filter screen stabilizing component is installed on the inner wall of the power supply housing. The filter screen stabilizing component is used for the stable installation of the filter screen of the AC-DC switching power supply.

[0012] Preferably, the alarm component includes a square box, an alarm, and fixed clamping strips. The square box is located on the inner wall of the power supply housing. The alarm is installed on the inner wall of the square box. The fixed clamping strips are installed on the inner wall of the square box. The motor is located on the inner wall of the square box. A screw rod is installed at the output end of the motor, and one end of the screw rod is connected to the inner wall of the square box through a bearing. A moving sliding sleeve is installed on the outer wall of the screw rod, and the internal thread of the moving sliding sleeve meshes with the screw rod. A tension detector is installed on the outer wall of the moving sliding sleeve. A touch head is installed on the outer wall of the tension detector. The outer wall of the touch head is connected to the circuit. One end of the touch head extends into the inside of the fixed clamping strip. The alarm is installed with a contact block through a wire, and the outer wall of the contact block is connected to the inner wall of the square box. The contact block and the touch head are on the same horizontal line.

[0013] Preferably, the maintenance component includes a protective cover, a first moving port, a second moving port, and a support groove. The protective cover is located on the top of the power supply housing. The first moving port is arranged on the outer wall of the protective cover. The second moving port is arranged on the top of the power supply housing. The support groove is arranged inside the first moving port. A cylindrical moving block is installed on the inner wall of the support groove. A connecting clamping rod is installed on the outer wall of the cylindrical moving block. There is a fixed opening on the outer wall of the power supply housing, and one end of the connecting clamping rod extends into the inside of the power supply housing through the fixed opening. One end of the first spring is connected to the inner wall of the first moving port. Sound outlet holes are provided on the top of the protective cover and the top of the square box.

[0014] Preferably, a pressing rod is installed through the inner wall of the second moving port. A rolling wheel is installed at the bottom of the pressing rod. A first spring is installed on the outer wall of the connecting clamping rod.

[0015] Preferably, the filter screen stabilizing assembly includes an L-shaped bracket, a dust-proof net, a cotton pad, a pressure sensor, and a support sleeve. The L-shaped bracket is located on the inner wall of the power supply case. The dust-proof net is located on one side of the L-shaped bracket. The cotton pad is located on top of the dust-proof net. The pressure sensor is located inside the cotton pad. The support sleeve is located on the outer wall of the L-shaped bracket. An electromagnet is installed on the inner wall of the support sleeve. The pressure sensor is connected to the electromagnet and the conversion module through a circuit. A return spring is installed on the outer wall of the electromagnet. A fixed head is installed on the outer wall of the return spring. A fixed opening is provided on the outer wall of the dust-proof net. The fixed head can move into the fixed opening. An auxiliary assembly is installed through the inner wall of the L-shaped bracket.

[0016] Preferably, the auxiliary assembly includes a support cylinder, a moving rod, a buffer spring, and a moving auxiliary plate. The support cylinder is installed through the outer wall of the L-shaped bracket. The moving rod is installed through the inner wall of the support cylinder. A support bar is installed on the inner wall of the L-shaped bracket. The buffer spring is located on the outer wall of the support bar, and one end of the buffer spring is connected to the outer wall of the moving rod. The moving auxiliary plate is located at one end of the moving rod. Ball beads are inlaid on the outer wall of the moving auxiliary plate.

[0017] Preferably, a power button is installed on the top of the power supply case, and heat dissipation openings are provided on the outer wall of the power supply case.

[0018] Preferably, the usage method of this AC-DC switching power supply is as follows:

[0019] S1. After the AC power is connected to the AC-DC switching power supply, press the power button. The power is supplied through the conversion module. First, it is detected by the protection circuit. The power enters the triode. If the power is stable, it is converted from AC to DC through the normal circuit and the access conversion circuit. If the input current is too high instantaneously, the triode is turned on to make it energized. The relay is energized by the base of the triode to start and disconnect the circuit, protecting the circuit in time, and the warning component is started by the collector of the triode to further warn the staff.

[0020] S2. After the warning component is started, the motor is started. The rotation of the motor drives the screw rod to rotate. The rotation of the screw rod drives the moving sliding sleeve to move. The movement of the moving sliding sleeve drives the tension detector to move. The movement of the tension detector enables the touch head to move through the support of the fixed clamping strip. The touch head moves and is connected to the contact block. Since the touch head has a circuit and the alarm is connected to the contact block through a wire, the circuit is conducted to start the alarm to emit a sound and transmit it through the sound outlet hole, enabling the staff to arrive in time for maintenance.

[0021] S3. During maintenance, press the pressure rod to drive the rolling wheel to move. The movement of the rolling wheel causes it to contact the connecting clamping rod. Through the fixed opening, the connecting clamping rod is driven to move. The movement of the connecting clamping rod drives the cylindrical moving block to move stably through the support of the support groove. The movement of the connecting clamping rod drives the first spring to move. The movement of the first spring causes the connecting clamping rod to move to a position flush with the fixed opening. At this time, pull the protective cover to drive the connecting clamping rod out of the fixed opening, and quickly remove the protective cover to facilitate the maintenance of the AC-DC switching power supply;

[0022] S4. The function of the L-shaped bracket is to support the support sleeve. The function of the support sleeve is to support the electromagnet. The function of the strip is to support the buffer spring. After the protective cover is removed and the pressure sensor detects no pressure, the electromagnet is controlled to close through the conversion module. After the electromagnet is closed, the magnetic thrust disappears, and the fixed head is pulled out of the fixed opening by the return spring. At this time, pull the dust-proof net to drive the ball of the moving auxiliary plate to rotate. After it is forced to deflect, it drives the dust-proof net to drive the moving auxiliary plate to move. The movement of the moving auxiliary plate drives the moving rod to move through the support of the support cylinder. The movement of the moving rod drives the return spring to move. The movement of the return spring causes the dust-proof net to move out stably and is convenient for accurate installation after cleaning.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In the present invention, after the AC power supply is connected to the AC-DC switching power supply and the power button is pressed, the power is supplied through the conversion module. First, the protection circuit detects. The power enters the triode. If the power is stable, it is converted from AC to DC through the normal circuit and the access conversion circuit. If the input current is too high instantaneously, the triode is turned on to make it energized. The relay is energized and started by the base of the triode to disconnect the circuit, protecting the circuit in time, and the warning component is started by the collector of the triode to further warn the staff;

[0025] 2. In the present invention, after the warning component is started, the motor is started. The motor drives the screw rod to rotate. The rotation of the screw rod drives the moving sliding sleeve to move. The movement of the moving sliding sleeve drives the tension detector to move. The movement of the tension detector causes the touch head to move through the support of the fixed clamping strip. The touch head moves and is connected to the contact block. Since the touch head has a circuit and the alarm is connected to the contact block through a wire, the circuit is conducted to start the alarm to emit a sound through the sound outlet hole, enabling the staff to arrive in time for maintenance;

[0026] 3. In the present invention, when performing maintenance, pressing the pressure rod drives the rolling wheel to move. The movement of the rolling wheel causes it to contact the connecting clamping rod. Through the fixed opening, the connecting clamping rod is driven to move. The movement of the connecting clamping rod drives the cylindrical moving block to move stably through the support of the support groove. The movement of the connecting clamping rod drives the first spring to move. The movement of the first spring causes the connecting clamping rod to move to a position flush with the fixed opening. At this time, pulling the protective cover drives the connecting clamping rod out of the fixed opening, and the protective cover can be quickly removed, facilitating the maintenance of the AC-DC switching power supply;

[0027] 4. In the present invention, after the protective cover is removed and the pressure sensor detects no pressure, the conversion module controls the electromagnet to close. After the electromagnet closes, the magnetic thrust disappears, and the reset spring pulls the fixed head out of the fixed opening. At this time, pulling the dust-proof net drives the ball of the moving auxiliary plate to rotate. After it is forced to deflect, it drives the dust-proof net to drive the moving auxiliary plate to move. The movement of the moving auxiliary plate drives the moving rod to move through the support of the support cylinder. The movement of the moving rod drives the reset spring to move. The movement of the reset spring causes the dust-proof net to move out stably and is convenient for accurate installation after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a front view structural schematic diagram of the present invention;

[0029] Figure 2 is a front structural schematic diagram of the present invention;

[0030] Figure 3 is a schematic diagram of the circuit protection process of the present invention;

[0031] Figure 4 is a schematic diagram of the protection circuit of the present invention;

[0032] Figure 5 is a schematic diagram of the dust-proof net structure of the present invention;

[0033] Figure 6 is a schematic diagram of the alarm structure of the present invention;

[0034] Figure 7 is a schematic diagram of the connecting clamping rod structure of the present invention;

[0035] Figure 8 is a schematic diagram of the moving auxiliary plate structure of the present invention.

[0036] In the figure: 1. Power supply housing; 2. Connection terminal; 3. Heat dissipation port; 4. Power button; 5. Conversion module; 6. AC power connection port; 9. Square box; 10. Motor; 11. Screw rod; 12. Moving sliding sleeve; 13. Tensile detector; 15. Touching head; 16. Fixed clamping strip; 17. Alarm; 19. Protective cover; 20. First moving port; 21. Support groove; 22. Cylindrical moving block; 23. First spring; 24. Fixed opening; 25. Connecting clamping rod; 26. Second moving port; 27. Pressing rod; 28. Rolling wheel; 29. L-shaped bracket; 30. Support cylinder; 31. Moving rod; 32. Support strip; 33. Buffer spring; 34. Moving auxiliary plate; 35. Dust-proof net; 36. Fixed opening; 37. Support sleeve; 38. Electromagnet; 39. Reset spring; 40. Fixed head; 41. Cotton pad; 42. Pressure sensor; 43. Sound outlet hole. Detailed implementation manner

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Embodiment 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, an embodiment provided by the present invention: an AC-DC switching power supply, including a power supply case 1, a connection terminal 2, a conversion module 5, and an AC power connection port 6. The function of the connection terminal 2 is to provide a connection point for direct current, and the function of the AC power connection port 6 is to provide a connection point for alternating current. The connection terminal 2 is installed on the outer wall of the power supply case 1, and the conversion module 5 is installed on the inner wall of the power supply case 1. The conversion module 5 is used to convert alternating current to direct current. The AC power connection port 6 is provided on the outer wall of the power supply case 1. A maintenance component is installed on the top of the power supply case 1, and the maintenance component is used for the maintenance of the AC-DC switching power supply. A filter stability component is installed on the inner wall of the power supply case 1, and the filter stability component is used for the stable installation of the filter of the AC-DC switching power supply. A power button 4 is installed on the top of the power supply case 1, and the function of the power button 4 is to control the start and stop of the AC-DC switching power supply. A heat dissipation port 3 is provided on the outer wall of the power supply case 1, and the function of the heat dissipation port 3 is to facilitate the heat dissipation of the power supply. The conversion module 5 includes a protection circuit, a conversion circuit, and a control circuit. The protection circuit is provided with a triode, a relay, a motor 10, and a diode. The control circuit is connected to the emitter of the triode. The base of the triode is connected to the coil of the relay. One end of the relay is connected to the diode, and the other end of the diode is connected to the control circuit. The collector of the triode is connected to the motor 10, and the contact wire of the motor 10 is connected to the control circuit. The control circuit is connected to the conversion circuit and the protection circuit. The conversion circuit adopts a full-bridge rectifier circuit. A warning component is installed on the inner wall of the power supply case 1, and the warning component is used for warning when the current is overloaded. The warning component is electrically connected to the motor 10 through a circuit. After the AC power is connected to the AC-DC switching power supply, press the power button 4, and the power is supplied through the conversion module 5. First, it is detected by the protection circuit. The power enters the triode. If the power is stable, it passes through the normal circuit and is connected to the conversion circuit for AC-DC conversion. If the input current is too high instantaneously, the triode is turned on to make it energized. The relay is energized by the base of the triode to start and disconnect the circuit, protecting the circuit in time, and the warning component is started by the collector of the triode to further warn the staff.

[0041] Embodiment 2: Please refer to Figure 1 , Figure 2 and Figure 6, an embodiment provided by the present invention: The warning component includes a square box 9, an alarm 17, and a fixed clamping strip 16. The square box 9 is located on the inner wall of the power supply housing 1. The function of the square box 9 is to provide support for the motor 10. The alarm 17 is installed on the inner wall of the square box 9. The fixed clamping strip 16 is installed on the inner wall of the square box 9. The motor 10 is located on the inner wall of the square box 9. A screw rod 11 is installed at the output end of the motor 10, and one end of the screw rod 11 is connected to the inner wall of the square box 9 through a bearing. A moving sliding sleeve 12 is installed on the outer wall of the screw rod 11, and the internal thread of the moving sliding sleeve 12 meshes with the screw rod 11. A tension detector 13 is installed on the outer wall of the moving sliding sleeve 12. A touch head 15 is installed on the outer wall of the tension detector 13. The outer wall of the touch head 15 is connected to the circuit. One end of the touch head 15 extends into the inside of the fixed clamping strip 16. The alarm 17 is installed with a contact block through a wire, and the outer wall of the contact block is connected to the inner wall of the square box 9. The contact block and the touch head 15 are on the same horizontal line. Sound outlet holes 43 are provided at the top of the protective cover 19 and the top of the square box 9. After the warning component is activated, the motor 10 is activated. The motor 10 drives the screw rod 11 to rotate. The screw rod 11 drives the moving sliding sleeve 12 to move. The moving sliding sleeve 12 drives the tension detector 13 to move. The movement of the tension detector 13 enables the touch head 15 to move through the support of the fixed clamping strip 16. The touch head 15 moves and connects with the contact block. Since the touch head 15 has a circuit and the alarm 17 is connected to the contact block through a wire, the circuit is conducted to activate the alarm 17 to emit a sound and pass it out through the sound outlet holes 43, enabling the staff to arrive in time for maintenance.

[0042] Embodiment 3: Please refer to Figure 1 , Figure 5 and Figure 7, an embodiment provided by the present invention: The maintenance component includes a protective cover 19, a first moving port 20, a second moving port 26, and a support groove 21. The protective cover 19 is located at the top of the power supply housing 1. The first moving port 20 is provided on the outer wall of the protective cover 19. The second moving port 26 is provided on the top of the power supply housing 1. The support groove 21 is arranged inside the first moving port 20. A cylindrical moving block 22 is installed on the inner wall of the support groove 21. A connecting clamping rod 25 is installed on the outer wall of the cylindrical moving block 22. A fixed opening 24 is provided on the outer wall of the power supply housing 1. One end of the connecting clamping rod 25 extends into the power supply housing 1 through the fixed opening 24. One end of the first spring 23 is connected to the inner wall of the first moving port 20. A pressing rod 27 is installed through the inner wall of the second moving port 26. A rolling wheel 28 is installed at the bottom of the pressing rod 27. The first spring 23 is installed on the outer wall of the connecting clamping rod 25. During maintenance, press the pressing rod 27 to drive the rolling wheel 28 to move. The movement of the rolling wheel 28 causes it to contact the connecting clamping rod 25, which drives the connecting clamping rod 25 to move through the fixed opening 24. The movement of the connecting clamping rod 25 drives the cylindrical moving block 22 to move stably through the support of the support groove 21. The movement of the connecting clamping rod 25 drives the first spring 23 to move. The movement of the first spring 23 causes the connecting clamping rod 25 to move to a position flush with the fixed opening 24. At this time, pull the protective cover 19 to drive the connecting clamping rod 25 out of the fixed opening 24, and quickly remove the protective cover 19 to facilitate the maintenance of the AC-DC switching power supply.

[0043] Embodiment 4: Please refer to Figure 1 , Figure 5 and Figure 8, an embodiment provided by the present invention: The filter screen stabilizing assembly includes an L-shaped bracket 29, a dust-proof net 35, a cotton pad 41, a pressure sensor 42, and a support sleeve 37. The L-shaped bracket 29 is located on the inner wall of the power supply housing 1. The dust-proof net 35 is located on one side of the L-shaped bracket 29. The cotton pad 41 is located on the top of the dust-proof net 35. The pressure sensor 42 is located inside the cotton pad 41. The support sleeve 37 is located on the outer wall of the L-shaped bracket 29. An electromagnet 38 is installed on the inner wall of the support sleeve 37. The pressure sensor 42 is connected to the electromagnet 38 and the conversion module 5 through a circuit. A return spring 39 is installed on the outer wall of the electromagnet 38. A fixed head 40 is installed on the outer wall of the return spring 39. A fixed port 36 is provided on the outer wall of the dust-proof net 35. The fixed head 40 can move into the inside of the fixed port 36. An auxiliary assembly is installed through the inner wall of the L-shaped bracket 29. The auxiliary assembly includes a support cylinder 30, a moving rod 31, a buffer spring 33, and a moving auxiliary plate 34. The support cylinder 30 is installed through the outer wall of the L-shaped bracket 29. The moving rod 31 is installed through the inner wall of the support cylinder 30. A support bar 32 is installed on the inner wall of the L-shaped bracket 29. The buffer spring 33 is located on the outer wall of the support bar 32, and one end of the buffer spring 33 is connected to the outer wall of the moving rod 31. The moving auxiliary plate 34 is located at one end of the moving rod 31. Ball bearings are inlaid on the outer wall of the moving auxiliary plate 34. The function of the L-shaped bracket 29 is to provide support for the support sleeve 37. The function of the support sleeve 37 is to provide support for the electromagnet 38. The function of the support bar 32 is to provide support for the buffer spring 33. After the protective cover 19 is removed and the pressure sensor 42 detects no pressure, the electromagnet 38 is controlled to turn off through the conversion module 5. After the electromagnet 38 is turned off, the magnetic thrust disappears, and the return spring 39 pulls the fixed head 40 out of the fixed port 36. At this time, pulling the dust-proof net 35 drives the ball bearings of the moving auxiliary plate 34 to rotate. After it is forced to deviate, it drives the dust-proof net 35 to drive the moving auxiliary plate 34 to move. The movement of the moving auxiliary plate 34 drives the moving rod 31 to move through the support of the support cylinder 30. The movement of the moving rod 31 drives the return spring 39 to move. The movement of the return spring 39 enables the dust-proof net 35 to be stably removed and is convenient for accurate installation after cleaning.

[0044] The usage method of this AC-DC switching power supply is as follows:

[0045] S1. After the AC power supply is connected to the AC-DC switching power supply, press the power button 4. The power is supplied through the conversion module 5. First, it is detected by the protection circuit. The power enters the triode. If the power is stable, it is converted from AC to DC through the normal circuit and the access conversion circuit. If the input current is too high instantaneously, the triode is turned on to make it energized. The relay is energized and started by the base of the triode to disconnect the circuit, protecting the circuit in time, and the warning component is started by the collector of the triode to further warn the staff;

[0046] S2. After the warning component is activated, the motor 10 is activated. The rotation of the motor 10 drives the screw rod 11 to rotate. The rotation of the screw rod 11 drives the moving sliding sleeve 12 to move. The movement of the moving sliding sleeve 12 drives the tension detector 13 to move. The movement of the tension detector 13 enables the touch head 15 to move through the support of the fixed clamping strip 16. The movement of the touch head 15 is connected to the contact block. Since the touch head 15 has a circuit and the alarm 17 is connected to the contact block through a wire, the circuit is turned on to activate the alarm 17 to emit a sound and transmit it through the sound outlet hole 43, so that the staff can arrive in time for maintenance;

[0047] S3. During maintenance, press the pressure rod 27 to drive the rolling wheel 28 to move. The movement of the rolling wheel 28 causes it to contact the connecting clamping rod 25. It drives the connecting clamping rod 25 to move through the fixed opening 24. The movement of the connecting clamping rod 25 drives the cylindrical moving block 22 to move stably through the support of the support groove 21. The movement of the connecting clamping rod 25 drives the first spring 23 to move. The movement of the first spring 23 moves the connecting clamping rod 25 to a position flush with the fixed opening 24. At this time, pull the protective cover 19 to drive the connecting clamping rod 25 out of the fixed opening 24, and quickly remove the protective cover 19 to facilitate the maintenance of the AC-DC switching power supply;

[0048] S4. The function of the L-shaped bracket 29 is to provide support for the support sleeve 37. The function of the support sleeve 37 is to provide support for the electromagnet 38. The function of the support bar 32 is to provide support for the buffer spring 33. After the protective cover 19 is removed and the pressure sensor 42 detects no pressure, the conversion module 5 controls the electromagnet 38 to turn off. After the electromagnet 38 is turned off, the magnetic thrust disappears, and the reset spring 39 pulls the fixed head 40 out of the fixed opening 36. At this time, pull the dust-proof net 35 to drive the ball of the moving auxiliary plate 34 to rotate. After it is forced to deflect, it drives the dust-proof net 35 to drive the moving auxiliary plate 34 to move. The movement of the moving auxiliary plate 34 drives the moving rod 31 to move through the support of the support cylinder 30. The movement of the moving rod 31 drives the reset spring 39 to move. The movement of the reset spring 39 enables the dust-proof net 35 to move out stably and is convenient for accurate installation after cleaning.

[0049] Working principle: After the AC power supply is connected to the AC-DC switching power supply, press the power button 4. The power enters through the conversion module 5. First, it is detected by the protection circuit. The power enters the triode. If the power is stable, it is converted from AC to DC through the normal circuit and the access conversion circuit. If the input current is too high instantaneously, the triode is turned on to make it energized. The relay is energized by the base of the triode to start and disconnect the circuit, protecting the circuit in time. And the warning component is started by the collector of the triode to further warn the staff. After the warning component is started, the motor 10 is started. The rotation of the motor 10 drives the screw rod 11 to rotate. The rotation of the screw rod 11 drives the moving sliding sleeve 12 to move. The movement of the moving sliding sleeve 12 drives the tension detector 13 to move. The movement of the tension detector 13 enables the touch head 15 to move through the support of the fixed clamping strip 16. The movement of the touch head 15 is connected to the contact block. Since the touch head 15 has a circuit and the alarm 17 is connected to the contact block through a wire, the circuit is conducted to start the alarm 17 and the sound is transmitted through the sound outlet hole 43, enabling the staff to arrive in time for maintenance. During maintenance, press the pressure rod 27 to drive the rolling wheel 28 to move. The movement of the rolling wheel 28 makes it contact with the connecting clamping rod 25. It drives the connecting clamping rod 25 to move through the fixed opening 24. The movement of the connecting clamping rod 25 drives the cylindrical moving block 22 to move stably through the support of the support groove 21. The movement of the connecting clamping rod 25 drives the first spring 23 to move. The movement of the first spring 23 makes the connecting clamping rod 25 move to a position flush with the fixed opening 24. At this time, pull the protective cover 19 to drive the connecting clamping rod 25 out of the fixed opening 24, quickly removing the protective cover 19 to facilitate the maintenance of the AC-DC switching power supply. The function of the L-shaped bracket 29 is to provide support for the support sleeve 37. The function of the support sleeve 37 is to provide support for the electromagnet 38. The function of the support bar 32 is to provide support for the buffer spring 33. After the protective cover 19 is removed and the pressure sensor 42 detects no pressure, the electromagnet 38 is controlled to close through the conversion module 5. After the electromagnet 38 is closed, the magnetic thrust disappears. The reset spring 39 pulls the fixed head 40 out of the fixed opening 36. At this time, pull the dust-proof net 35 to drive the balls of the moving auxiliary plate 34 to rotate. After it is forced to deflect, it drives the dust-proof net 35 to drive the moving auxiliary plate 34 to move. The movement of the moving auxiliary plate 34 drives the moving rod 31 to move through the support of the support cylinder 30. The movement of the moving rod 31 drives the reset spring 39 to move. The movement of the reset spring 39 enables the dust-proof net 35 to be stably removed and is convenient for accurate installation after cleaning.

[0050] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. An AC-to-DC switching power supply, comprising a power supply housing (1), a connection terminal (2), a conversion module (5) and an AC power connection port (6), characterized in that: The outer wall of the power supply housing (1) is provided with a connection terminal (2), the inner wall of the power supply housing (1) is provided with a conversion module (5), the conversion module (5) is used for converting alternating current into direct current, and the outer wall of the power supply housing (1) is provided with an alternating current power connection port (6); The conversion module (5) comprises a protection circuit, a conversion circuit and a control circuit. The protection circuit is provided with a triode, a relay, a motor (10) and a diode. The control circuit is connected to the conversion circuit and the protection circuit. The conversion circuit adopts a full-bridge rectifier circuit. The inner wall of the power supply housing (1) is provided with a warning component. The warning component is used for warning when a current is overloaded. The warning component is electrically connected to the motor (10) via a circuit. The warning component comprises a square box (9), an alarm (17), and a fixed clip (16); the square box (9) is located on the inner wall of the power supply housing (1); the alarm (17) is mounted on the inner wall of the square box (9); the fixed clip (16) is mounted on the inner wall of the square box (9); the motor (10) is located on the inner wall of the square box (9); a screw rod (11) is mounted on the output end of the motor (10); one end of the screw rod (11) is connected to the inner wall of the square box (9) via a bearing; and a movable sleeve (16) is mounted on the outer wall of the screw rod (11). 12), and the movable sleeve (12) has internal threads meshing with the spiral rod (11), the outer wall of the movable sleeve (12) is mounted with a tension detector (13), the outer wall of the tension detector (13) is mounted with a touch head (15), the outer wall of the touch head (15) is connected to the circuit, one end of the touch head (15) extends to the inside of the fixed card strip (16), the alarm (17) is mounted with a contact block via a wire, the outer wall of the contact block is connected to the inner wall of the square box (9), and the contact block and the touch head (15) are located on the same horizontal line.

2. The AC-to-DC switching power supply according to claim 1, characterized in that: A maintenance component is installed on the top of the power supply housing (1), and the maintenance component is used for maintenance of the AC-DC switching power supply. A filter stabilization component is installed on the inner wall of the power supply housing (1), and the filter stabilization component is used for stable installation of the filter of the AC-DC switching power supply.

3. The AC-to-DC switching power supply according to claim 2, characterized in that: The maintenance component comprises a protective cover (19), a first movable opening (20), a second movable opening (26), and a support groove (21); the protective cover (19) is located at the top of the power supply shell (1); the first movable opening (20) is arranged on the outer wall of the protective cover (19); the second movable opening (26) is arranged on the top of the power supply shell (1); the support groove (21) is arranged inside the first movable opening (20); a cylindrical movable block (22) is installed on the inner wall of the support groove (21); a connecting rod (25) is installed on the outer wall of the cylindrical movable block (22); a fixed opening (24) is provided on the outer wall of the power supply shell (1); one end of the connecting rod (25) extends to the inside of the power supply shell (1) through the fixed opening (24); one end of the first spring (23) is connected to the inner wall of the first movable opening (20); and a sound outlet hole (43) is provided on the top of the protective cover (19) and the top of the square box (9).

4. The AC-to-DC switching power supply according to claim 3, characterized in that: A pressure rod (27) is installed through the inner wall of the second moving opening (26), a rolling wheel (28) is installed at the bottom of the pressure rod (27), and a first spring (23) is installed on the outer wall of the connecting clamp rod (25).

5. The AC-to-DC switching power supply according to claim 2, characterized in that: The filter stabilization component comprises an L-shaped bracket (29), a dust screen (35), a cotton pad (41), a pressure sensor (42), and a support sleeve (37). The L-shaped bracket (29) is located on the inner wall of the power supply housing (1), the dust screen (35) is located on one side of the L-shaped bracket (29), the cotton pad (41) is located on the top of the dust screen (35), the pressure sensor (42) is located inside the cotton pad (41), the support sleeve (37) is located on the outer wall of the L-shaped bracket (29), an electromagnet (38) is installed on the inner wall of the support sleeve (37), the pressure sensor (42) is connected to the electromagnet (38) and the conversion module (5) through a line, a reset spring (39) is installed on the outer wall of the electromagnet (38), a fixing head (40) is installed on the outer wall of the reset spring (39), a fixing opening (36) is provided on the outer wall of the dust screen (35), and the fixing head (40) can be moved to the inside of the fixing opening (36), and an auxiliary component is installed through the inner wall of the L-shaped bracket (29).

6. The AC-to-DC switching power supply according to claim 5, characterized in that: The auxiliary component comprises a support tube (30), a moving rod (31), a buffer spring (33), and a moving auxiliary plate (34); the support tube (30) is installed through the outer wall of the L-shaped bracket (29); the moving rod (31) is installed through the inner wall of the support tube (30); a support bar (32) is installed on the inner wall of the L-shaped bracket (29); the buffer spring (33) is located on the outer wall of the support bar (32), and one end of the buffer spring (33) is connected to the outer wall of the moving rod (31); the moving auxiliary plate (34) is located at one end of the moving rod (31), and the outer wall of the moving auxiliary plate (34) is inlaid with a ball.

7. The AC-to-DC switching power supply according to claim 1, characterized in that: A power button (4) is installed on the top of the power shell (1), and a heat dissipation port (3) is provided on the outer wall of the power shell (1).

8. The method for using an AC-to-DC switching power supply according to any one of claims 1 to 7, characterized in that: The method of using the AC to DC switching power supply is as follows: S1. After the AC power supply is connected to the AC-to-DC switching power supply, the power button (4) is pressed to input power through the conversion module (5). The power supply is first detected by the protection circuit, and then the power supply enters the transistor. When the power supply is stable, the AC-to-DC conversion is performed through the normal circuit and the conversion circuit. When the input current is too high, the warning component is activated to further warn the staff; S2, the contact head (15) moves to connect with the contact block. Since the contact head (15) has a circuit and the alarm (17) is connected to the contact block through a wire, the circuit is turned on so that the alarm (17) is activated and emits a sound through the sound outlet (43), so that the staff can arrive in time for maintenance; S3, pulling the protective cover (19) to drive the connecting rod (25) to move out of the fixed opening (24), and quickly removing the protective cover (19) to facilitate maintenance of the AC-to-DC switching power supply; S4. The return spring (39) moves to allow the dust screen (35) to be stably removed and to facilitate accurate installation after cleaning.

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