Switching power supply capable of suppressing switching noise

Abstract

The invention provides a switching power supply for suppressing switching noise, and belongs to the field of switching power supplies. Comprising a shell and a switching power supply mainboard, the switching power supply mainboard is arranged in the shell, and a plurality of noise reduction structures are uniformly distributed on the inner side wall of the shell. By arranging the air inlet groove, the air outlet groove and the fan, when the switching power supply is used, negative pressure is generated in the inner cavity of the shell under the action of the fan, external air enters the inner cavity of the shell through the air inlet groove, and due to the fact that the air flows in the side wall of the shell, heat absorbed by the shell can be rapidly absorbed; air flow in the shell is discharged through the air outlet groove under the action of the fan, efficient heat dissipation of the switching power supply is achieved, air channels of the air inlet groove and the air outlet groove are long and are arranged in a bent mode, outward transmission of noise can be reduced, and the noise reduction effect is further improved. The invention has the advantages of improving heat dissipation and reducing noise pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of switching power supplies, and in particular to a switching power supply capable of suppressing switching noise. Background Art

[0002] The function of a switching power supply is to convert a single-level voltage into the current or voltage required by the user using different pathways. It is done by changing the fully open and fully closed modes of the transistor. These two modes consume less energy and are not long, so they can save a lot of energy and reduce the generation of waste heat. The biggest feature of a switching power supply is its high conversion rate, small size, and light weight, so it is widely used in production and life.

[0003] At present, in order to ensure the heat dissipation and stable operation of the internal electronic components, the traditional switching power supply is equipped with a cooling fan inside the switching power supply and a large number of through holes are opened on the outer shell to improve the heat dissipation effect of the switching power supply. However, in the actual use of the switching power supply, due to the rotation of the cooling fan and the vibration generated by the operation of the internal electronic components, the switching power supply will generate certain noise. These noises will be continuously transmitted to the external environment, which will have a certain impact on people or objects in the external environment, which is not conducive to the use of the switching power supply. Based on the above reasons, the present invention proposes a switching power supply that suppresses switching noise. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a switching power supply which can suppress switching noise and has the advantages of improving heat dissipation and reducing noise pollution.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A switching power supply for suppressing switching noise comprises a shell, a switching power supply mainboard is arranged in the shell, a plurality of noise reduction structures are evenly distributed on the inner side wall of the shell, side panels are fixedly connected to the front and rear side walls of the shell, two fixing plates are symmetrically fixedly connected to the rear side panel, the fixing plate is movably connected to the shell and a plurality of vibration adaptation components are evenly distributed on the fixing plate, the same mounting plate is arranged on two vibration adaptation components of the same cross section, the mounting plate is fixedly connected to the switching power supply mainboard, a through slot is opened on the front side side panel, the switching power supply mainboard passes through the through slot and a sealing component is arranged in the through slot, air inlet slots are opened in the upper and lower side walls of the shell, and an air outlet slot is opened in the rear side panel and a fan is fixedly connected.

[0007] Preferably, the noise reduction structure includes a hexagonal groove, and a plurality of hexagonal grooves are evenly distributed on the inner wall of the shell, and a hexagonal pyramid is fixedly connected to each of the hexagonal grooves. The hexagonal pyramid is concentric with the hexagonal groove and staggered at 60 degrees. The inner side wall of the hexagonal groove is inclined and connected to the bottom surface of the hexagonal pyramid, and the hexagonal groove extends from the top of the hexagonal pyramid.

[0008] Preferably, the vibration adaptation component includes a circular groove, a threaded sleeve is arranged at the center of the circular groove, a plurality of first springs are evenly distributed and fixedly connected to the outer wall of the threaded sleeve, and the ends of the first springs away from the threaded sleeve are fixedly connected to the inner wall of the circular groove.

[0009] Preferably, the mounting plate is concavely arranged and first bolts are threadedly connected to the left and right side walls near the top surface. The first bolts penetrate the mounting plate and are threadedly connected to the threaded sleeves on both sides respectively.

[0010] Preferably, the sealing assembly includes a side groove, and the side plates on the front side are provided with side grooves on both the upper and lower sides of the through groove, and movable plates are movably connected in the side grooves, and a plurality of second springs are evenly distributed and fixedly connected on the side of the movable plate away from the switching power supply mainboard, and the other ends of the second springs are fixedly connected to the inner wall of the side groove, and an insulating sealing strip is fixedly connected on the side of the movable plate away from the second springs, and the insulating sealing strip is arranged in an L shape.

[0011] Preferably, the air inlet groove is arranged in a Z shape, the front side of the air inlet groove penetrates the inner wall of the outer shell and the rear side penetrates the outer wall of the outer shell, and the air outlet groove is arranged in a concave shape, the air outlet groove is connected to the fan and the two sides penetrate the rear wall of the rear side panel.

[0012] Preferably, two threaded holes are symmetrically provided on the bottom surface of the mounting plate, and a plurality of second bolts are evenly distributed on the switching power supply mainboard. The second bolts penetrate the switching power supply mainboard and are threadedly connected to the threaded holes respectively.

[0013] Preferably, the left and right inner walls of the shell are both provided with transverse grooves near the top surface, the fixing plates are both fixedly connected with transverse plates, the transverse plates are inserted into the transverse grooves, and the transverse plates are movably connected to the transverse grooves.

[0014] Preferably, a connecting plate is fixedly connected to the front side wall of the front side side plate, the connecting plate is concavely arranged, and mounting grooves are provided on the left and right side walls of the connecting plate.

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

[0016] The present invention is provided with a fixing plate, a mounting plate and a vibration adaptation component. During the use of the switching power supply, the vibration generated by the operation of the electronic components on the switching power supply mainboard is transmitted to the threaded sleeve through the mounting plate. At this time, the energy generated by the vibration is converted and absorbed by the multiple first springs arranged on the threaded sleeve, which can effectively reduce the noise pollution caused by the operation of the switching power supply, and has a good use effect.

[0017] The present invention is provided with a noise reduction structure. During the use of the switching power supply, the noise generated inside the housing will be transmitted to the inner wall of the housing, and the noise sound waves will enter the hexagonal groove, be reflected to the hexagonal pyramid through the inclined inner wall of the hexagonal groove, and then return to the inner cavity of the housing through the reflection of the hexagonal pyramid, which can not only reduce the transmission of the noise sound waves to the outside, but also realize the mutual cancellation of the noise sound waves, thereby effectively realizing the noise reduction function.

[0018] The present invention is provided with an air inlet groove, an air outlet groove and a fan. When the switching power supply is used, the fan generates a negative pressure in the inner cavity of the shell, and the external gas enters the inner cavity of the shell through the air inlet groove. Because the gas flows in the side wall of the shell, the heat absorbed by the shell can be quickly absorbed, and the air flow inside the shell is discharged through the air outlet groove by the action of the fan, thereby realizing efficient heat dissipation of the switching power supply. Moreover, because the air ducts of the air inlet groove and the air outlet groove are long and curved, the noise transmission to the outside can be reduced, thereby further improving the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0021] Figure 2 It is a side perspective structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the housing of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the shell cross section of the present invention;

[0025] Figure 6 is a schematic diagram of the three-dimensional structure of the vibration adaptation component of the present invention;

[0026] Figure 7is a schematic diagram of the three-dimensional structure of the sealing assembly of the present invention;

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the mounting plate of the present invention.

[0028] [reference numerals]

[0029] 1. Shell; 2. Switching power supply mainboard; 3. Noise reduction structure; 4. Side panel; 5. Fixed plate; 6. Vibration adaptation component; 7. Mounting plate; 8. Through slot; 9. Sealing component; 10. Air inlet slot; 11. Air outlet slot; 12. Fan; 13. Hexagonal slot; 14. Hexagonal pyramid; 15. Circular slot; 16. Threaded sleeve; 17. First spring; 18. First bolt; 19. Movable plate; 20. Second spring; 21. Insulating sealing strip; 22. Threaded hole; 23. Second bolt; 24. Horizontal slot; 25. Horizontal plate; 26. Connecting plate; 27. Mounting slot.

[0030] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0031] A novel building exterior wall system and method provided by the present invention are described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0032] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0033] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0034] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0035] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0036] like Figure 1-8 As shown, an embodiment of the present invention provides a switching power supply for suppressing switching noise, including a housing 1, a switching power supply mainboard 2 is arranged in the housing 1, a plurality of noise reduction structures 3 are evenly distributed on the inner side wall of the housing 1, and the noise reduction structure 3 includes a hexagonal groove 13, a plurality of hexagonal grooves 13 are evenly distributed on the inner side wall of the housing 1, a hexagonal pyramid 14 is fixedly connected in each hexagonal groove 13, the hexagonal pyramid 14 is concentric with the hexagonal groove 13 and is staggered at 60 degrees, and the inner side wall of the hexagonal groove 13 is inclined and is staggered with the hexagonal pyramid 1 4 bottom surface connection setting, the top of the hexagonal pyramid 14 extends out of the hexagonal groove 13 setting, during the operation of the switching power supply, the noise generated inside the housing 1 will be transmitted to the inner wall of the housing 1, the noise sound wave will enter the hexagonal groove 13, and will be reflected to the hexagonal pyramid 14 through the inclined inner wall of the hexagonal groove 13, and then reflected back to the inner cavity of the housing 1 through the hexagonal pyramid 14, which can not only reduce the transmission of noise sound waves to the outside, but also realize the mutual cancellation of noise sound waves, effectively realize the noise reduction function, and facilitate the use of the switching power supply;

[0037] Among them, a connecting plate 26 is fixedly connected to the front side wall of the front side panel 4, and the connecting plate 26 is concavely arranged. The left and right side walls of the connecting plate 26 are provided with mounting grooves 27, which facilitates the fixed installation operation of the device;

[0038] The front and rear side walls of the housing 1 are fixedly connected with side plates 4, and the rear side plate 4 is symmetrically fixedly connected with two fixing plates 5, which are movably connected with the housing 1 and are evenly distributed with a plurality of vibration adaptation components 6 on the fixing plates 5, and the vibration adaptation components 6 include a circular groove 15, a threaded sleeve 16 is arranged at the center of the circular groove 15, and a plurality of first springs 17 are evenly distributed and fixedly connected with the outer wall of the threaded sleeve 16, and the ends of the first springs 17 away from the threaded sleeve 16 are fixedly connected with the inner wall of the circular groove 15, and the deformation of the first springs 17 is used to realize the conversion and absorption of the vibration energy generated by the switching power supply mainboard 2, thereby reducing the noise pollution caused by the vibration;

[0039] Among them, the left and right inner walls of the housing 1 are both provided with transverse grooves 24 near the top surface, and the fixing plate 5 is fixedly connected with a transverse plate 25, which is inserted into the transverse groove 24 and is movably connected with the transverse groove 24, so as to facilitate the installation and maintenance of the switching power supply mainboard 2;

[0040] The same mounting plate 7 is arranged on two vibration adaptation components 6 of the same cross section, and the mounting plate 7 is fixedly connected to the switching power supply mainboard 2. A through groove 8 is arranged on the front side side plate 4, and the switching power supply mainboard 2 passes through the through groove 8 and a sealing component 9 is arranged in the through groove 8. The sealing component 9 includes a side groove, and the front side side plate 4 is provided with side grooves on both upper and lower sides of the through groove 8, and a movable plate 19 is movably connected in the side groove. A plurality of second springs 20 are evenly distributed and fixedly connected on the side of the movable plate 19 away from the switching power supply mainboard 2, and the other ends of the second springs 20 are fixedly connected to the inner wall of the side groove. An insulating sealing strip 21 is fixedly connected on the side of the movable plate 19 away from the second spring 20, and the insulating sealing strip 21 is arranged in an L shape, which can realize the sealing of the switching power supply mainboard 2 in the through groove 8, avoid the entry of external impurities and reduce the transmission of internal noise, and has a good use effect;

[0041] The mounting plate 7 is concavely arranged and the left and right side walls near the top surface are both threadedly connected with first bolts 18, the first bolts 18 penetrate the mounting plate 7 and are respectively threadedly connected with the threaded sleeves 16 on both sides, so as to facilitate the fixed installation between the mounting plate 7 and the fixing plate 5;

[0042] Among them, two threaded holes 22 are symmetrically provided on the bottom surface of the mounting plate 7, and a plurality of second bolts 23 are evenly distributed on the switching power supply mainboard 2. The second bolts 23 penetrate the switching power supply mainboard 2 and are respectively threadedly connected with the threaded holes 22, so that the switching power supply mainboard 2 and the mounting plate 7 can be fixedly installed;

[0043] The upper and lower side walls of the shell 1 are provided with air inlet grooves 10, the rear side plate 4 is provided with air outlet grooves 11 and is fixedly connected with a fan 12, the air inlet groove 10 is arranged in a Z shape, the front side of the air inlet groove 10 passes through the inner wall of the shell 1 and the rear side passes through the outer wall of the shell 1, the air outlet groove 11 is arranged in a concave shape, the air outlet groove 11 is connected with the fan 12 and the two sides pass through the rear side wall of the rear side plate 4. By starting the fan 12, the operation of the fan 12 causes a negative pressure to be generated in the inner cavity of the shell 1, and the external gas enters the inner cavity of the shell 1 through the air inlet groove 10. Because the gas flows in the side wall of the shell 1, the heat absorbed by the shell 1 can be quickly dissipated, and the air flow inside the shell 1 is discharged through the air outlet groove 11 by the action of the fan 12, so as to achieve efficient heat dissipation of the switching power supply, and because the air ducts of the air inlet groove 10 and the air outlet groove 11 are long and curved, the noise transmission to the outside can be reduced, thereby further improving the noise reduction effect.

[0044] Working principle: the device is fixedly installed at a designated position inside the equipment through the connecting plate 26, and the connection with the external line is realized through the mounting seat on the front side of the switching power supply mainboard 2 to complete the installation and connection of the device, and the device is connected to the external power supply, and the power parameters are controlled through the switching power supply mainboard 2 to realize the output of power. During the use of the switching power supply, the vibration generated by the switching power supply mainboard 2 is directly transmitted to the mounting plate 7, because the mounting plate 7 is connected to the threaded sleeve 16 through the first bolt 18. At this time, the mounting plate 7 will transmit the vibration to the threaded sleeve 16, and the threaded sleeve 16 moves in the circular groove 15. The threaded sleeve 16 drives the first spring 17 to deform, and the deformation of the first spring 17 is used to realize the conversion and absorption of the vibration energy generated by the switching power supply mainboard 2, thereby reducing the noise pollution caused by the vibration, and by starting the fan 12, the operation of the fan 12 makes the housing 1 The cavity generates negative pressure, and the external gas enters the inner cavity of the shell 1 through the air inlet groove 10. Because the gas flows in the side wall of the shell 1, the heat absorbed by the shell 1 can be quickly dissipated, and the air flow inside the shell 1 is discharged through the air outlet groove 11 by the action of the fan 12, so as to achieve efficient heat dissipation of the switching power supply. Moreover, because the air ducts of the air inlet groove 10 and the air outlet groove 11 are long and curved, the noise transmission to the outside can be reduced, and the noise reduction effect is further improved. Moreover, during the operation of the switching power supply, the noise generated inside the shell 1 will be transmitted to the inner wall of the shell 1, and the noise sound wave will enter the hexagonal groove 13, and be reflected to the hexagonal pyramid 14 through the inclined inner wall of the hexagonal groove 13, and then be reflected back to the inner cavity of the shell 1 through the hexagonal pyramid 14, which can not only reduce the transmission of noise sound waves to the outside, but also achieve mutual cancellation of noise sound waves, effectively realize the noise reduction function, and facilitate the use of the switching power supply.

[0045] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0046] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A switching power supply for suppressing switching noise, comprising a housing (1), wherein a switching power supply mainboard (2) is arranged in the housing (1), characterized in that: A plurality of noise reduction structures (3) are evenly distributed on the inner side wall of the housing (1); side panels (4) are fixedly connected to the front and rear side walls of the housing (1); two fixed panels (5) are symmetrically fixedly connected to the rear side panel (4); the fixed panel (5) is movably connected to the housing (1) and a plurality of vibration adaptation components (6) are evenly distributed on the fixed panel (5); the two vibration adaptation components (6) of the same cross section are provided with the same mounting plate (7); the mounting plate (7) is fixedly connected to the switching power supply mainboard (2); a through slot (8) is provided on the front side side panel (4); the switching power supply mainboard (2) passes through the through slot (8) and a sealing component (9) is provided in the through slot (8); an air inlet slot (10) is provided in the upper and lower side walls of the housing (1); an air outlet slot (11) is provided in the rear side panel (4) and a fan (12) is fixedly connected thereto.

2. A switching power supply for suppressing switching noise according to claim 1, characterized in that: The noise reduction structure (3) comprises a hexagonal groove (13), a plurality of hexagonal grooves (13) are evenly distributed on the inner side wall of the housing (1), a hexagonal pyramid (14) is fixedly connected in each of the hexagonal grooves (13), the hexagonal pyramid (14) is concentric with the hexagonal groove (13) and is staggered at 60 degrees, the inner side wall of the hexagonal groove (13) is inclined and connected to the bottom surface of the hexagonal pyramid (14), and the top of the hexagonal pyramid (14) extends out of the hexagonal groove (13).

3. A switching power supply for suppressing switching noise according to claim 2, characterized in that: The vibration adaptation component (6) comprises a circular groove (15), a threaded sleeve (16) is arranged at the center of the circular groove (15), a plurality of first springs (17) are evenly distributed and fixedly connected to the outer wall of the threaded sleeve (16), and the ends of the first springs (17) away from the threaded sleeve (16) are fixedly connected to the inner wall of the circular groove (15).

4. A switching power supply for suppressing switching noise according to claim 3, characterized in that: The mounting plate (7) is concavely arranged and the left and right side walls near the top surface are both threadedly connected with first bolts (18). The first bolts (18) penetrate the mounting plate (7) and are respectively threadedly connected with the threaded sleeves (16) on both sides.

5. A switching power supply for suppressing switching noise according to claim 4, characterized in that: The sealing assembly (9) comprises a side groove, and the side plate (4) on the front side is provided with side grooves on both upper and lower sides of the through groove (8), and a movable plate (19) is movably connected in the side groove, and a plurality of second springs (20) are evenly distributed and fixedly connected to the movable plate (19) on the side away from the switching power supply mainboard (2), and the other ends of the second springs (20) are fixedly connected to the inner wall of the side groove, and an insulating sealing strip (21) is fixedly connected to the side of the movable plate (19) away from the second springs (20), and the insulating sealing strip (21) is arranged in an L shape.

6. A switching power supply for suppressing switching noise according to claim 5, characterized in that: The air inlet groove (10) is arranged in a Z shape, the front side of the air inlet groove (10) penetrates the inner wall of the outer shell (1) and the rear side penetrates the outer wall of the outer shell (1), and the air outlet groove (11) is arranged in a concave shape, the air outlet groove (11) is connected to the fan (12) and the two sides penetrate the rear wall of the rear side plate (4).

7. A switching power supply for suppressing switching noise according to claim 6, characterized in that: Two threaded holes (22) are symmetrically provided on the bottom surface of the mounting plate (7), and a plurality of second bolts (23) are evenly distributed on the switching power supply mainboard (2). The second bolts (23) penetrate the switching power supply mainboard (2) and are respectively threadedly connected to the threaded holes (22).

8. A switching power supply for suppressing switching noise according to claim 7, characterized in that: The left and right inner walls of the shell (1) are both provided with transverse grooves (24) near the top surface, and the fixing plate (5) is fixedly connected with a transverse plate (25), the transverse plate (25) is inserted into the transverse groove (24), and the transverse plate (25) and the transverse groove (24) are movably connected.

9. A switching power supply for suppressing switching noise according to claim 8, characterized in that: A connecting plate (26) is fixedly connected to the front side wall of the front side side plate (4); the connecting plate (26) is arranged in a concave shape; and mounting grooves (27) are provided on the left and right side walls of the connecting plate (26).

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