Substrate-type small-size switching power supply

Abstract

The utility model relates to the technical field of switching power supplies, in particular to a substrate-type small-size switching power supply, which comprises an assembly shell, limiting plates are fixed at the bottom ends of two sides of the inner wall of the assembly shell, the bottom ends of the limiting plates are connected with a switching power supply main body in a sliding manner, and a ventilation mechanism is arranged at the rear end of the assembly shell; the ventilation mechanism comprises a mounting shell. According to the utility model, dust in external air is filtered by the first filter screen through the cooling fan, then the air enters the mounting shell, is secondarily filtered by the small filter screens of the first baffle plate and the second baffle plate, and then enters the assembling shell through the high-efficiency filter, so that the air circulation is accelerated to achieve a cooling effect, and the high-efficiency filter is attached to one side of the switching power supply main body and can transfer heat; the small-sized filter screens of the first baffle and the second baffle are embedded in a staggered manner, so that the situation that the small-sized filter screens of the first baffle and the second baffle are in direct contact with the high-efficiency filter after entering water, and the switching power supply main body is influenced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of switching power supplies, in particular to a substrate-type small-volume switching power supply. Background Art

[0002] With the development and innovation of power electronics technology, switching power supply technology also requires continuous innovation. Switching power supplies are divided into many types according to their specific uses. The substrate-type small-volume switching power supply is relatively small and suitable for many installation spaces and locations where the equipment space is relatively narrow. Correspondingly, in order to protect the substrate-type small-volume switching power supply, it is usually equipped with a protective shell or protective box.

[0003] The patent specification with announcement number CN218603357U discloses a switching power supply, including a box body, a sealing plate and a bottom plate, the sealing plate is slidably connected to the box body, the bottom plate is installed on one side of the box body, and a plurality of air inlet holes are opened on one side of the bottom plate, a first dustproof component is installed on one side of the bottom plate, and a second dustproof component is installed on the upper surface of the sealing plate; through the cooperation between the cooling fan, the first dustproof component, the second dustproof component and the box body, the cooling fan is used to cool the constant voltage and constant current component in the box body, and the air is introduced into the box body through the cooling holes and ventilation holes under the action of the cooling fan to dissipate heat; the detachable mesh plate and the dustproof net can effectively block dust from entering the box body, reduce the influence of dust on the constant voltage and constant current component, facilitate disassembly and cleaning, and improve heat dissipation efficiency; at the same time, the cooling fan has a large air volume and low noise during heat dissipation.

[0004] However, in the implementation of related technologies, it was found that the switching power supply of the above design has the following problems: in the prior art, heat is dissipated by improving air circulation through a cooling fan, but compared with a small-volume switching power supply, multiple groups of electronic components are relatively dense, so the heat is relatively concentrated. If cold air directly enters, it may condense into small water droplets and soak the electronic components of the switching power supply, thereby causing damage and affecting use. In view of this, a substrate-type small-volume switching power supply is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a substrate-type small-volume switching power supply.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a substrate-type small-volume switching power supply, comprising an assembly shell, wherein limit plates are fixed at the bottom ends of both sides of the inner wall of the assembly shell, and the bottom ends of the limit plates are slidably connected to the switching power supply body, and a ventilation mechanism is arranged at the rear end of the assembly shell;

[0007] The ventilation mechanism includes a mounting shell, which is fixedly mounted at the rear end of the assembly shell, and a heat dissipation fan is embedded in the outer wall of the mounting shell away from the assembly shell, a first filter is installed on the outer wall of the mounting shell facing the heat dissipation fan, a first baffle is fixed inside the mounting shell, and a second baffle is arranged on one side of the first baffle inside the mounting shell, a plurality of small filter screens are embedded inside the first baffle and the second baffle, and a high-efficiency filter is embedded in the outer wall of the mounting shell that is in contact with the assembly shell, and the small filter screens of the first baffle and the second baffle are staggeredly embedded to avoid being splashed with water, which can play a certain blocking effect when water enters the mounting shell.

[0008] As a further description of the above technical solution: the mounting shell is communicated with the assembly shell, and the mounting shell is detachably connected to the high-efficiency filter by bolts. The high-efficiency filter can slow down the time for air to enter the assembly shell. At the same time, the high-efficiency filter fits the switching power supply body, can absorb heat and preheat in advance, and avoid cold air directly entering and causing water droplets, which are adsorbed on the switching power supply body and cause damage.

[0009] As a further description of the above technical solution: sliding grooves are opened on both sides of the inner wall of the assembly shell, and the inside of the sliding groove is slidably connected with a cover plate, which slides through the sliding groove to close the assembly shell and is fixedly connected by bolts.

[0010] As a further description of the above technical solution: a damping spring is embedded inside the cover, and one end of the damping spring passing through the cover is connected to a pressing plate. After the cover is closed, the damping spring pushes the pressing plate to press the connecting cable, thereby elastically tightening the connecting cable to prevent it from moving or shaking due to force, affecting the power connection.

[0011] As a further description of the above technical solution: a limiting column is fixed at the bottom end of the pressing plate, and a limiting hole is opened at the inner bottom end of the assembly shell corresponding to the position of the limiting column. The limiting column at the bottom end of the pressing plate is inserted into the limiting hole for limiting the position, thereby preventing the pressing plate from shaking under force. At the same time, a certain gap is left when the cable is tightened to facilitate air circulation and thus the internal hot air can flow out.

[0012] As a further description of the above technical solution: adjustment mechanisms are provided on both sides of the outer wall of the assembly shell, and the adjustment mechanism includes a connecting shell, which is fixedly installed on both sides of the outer wall of the assembly shell, and a second filter screen is embedded in the positions of the two sides of the outer wall of the assembly shell corresponding to the connecting shell, and a first sliding plate and a second sliding plate are slidably connected inside the connecting shell, and a connecting rod is fixed between the first sliding plate and the second sliding plate, and rubber scrapers are connected to the outer walls of the first sliding plate and the second sliding plate facing the second filter screen, and the first sliding plate is pulled, and the second sliding plate is driven by the connecting rod to slide along the assembly shell, so that the second filter screen is switched and closed.

[0013] As a further description of the above technical solution: the rubber scraper is bonded to the first sliding plate, and the rubber scraper is tightly fitted to the second filter screen. The two rubber scrapers pass through the first sliding plate and the second sliding plate and slide along the second filter screen, thereby scraping off dust and the like to avoid clogging.

[0014] The utility model has the following beneficial effects:

[0015] The utility model designs a substrate-type small-volume switching power supply. The external air is filtered through a first filter screen by a heat dissipation fan, and then enters a mounting shell. After secondary filtration through the small filter screens of the first baffle and the second baffle, the air enters the assembly shell through a high-efficiency filter, so that the air can circulate faster to achieve a heat dissipation effect. The high-efficiency filter is attached to one side of the switching power supply body, and can transfer heat, so that the circulating air has a little heat, and it is prevented that the cold air directly interacts with the hot air and generates water droplets to damage the electronic components. The small filter screens of the first baffle and the second baffle are staggered and embedded, so as to prevent the water from directly contacting the high-efficiency filter after entering, and affecting the switching power supply body.

[0016] The utility model designs a substrate-type small-volume switching power supply. The pressing plate is pushed elastically by a damping spring to press the connecting cable to clamp it to a certain extent, so as to prevent the cable from shaking due to force, resulting in poor contact of the connection point of the switching power supply body. The limiting column is limited by the limiting hole, so as to improve the stability of the pressing plate and avoid shaking. By pulling the first sliding plate, the second sliding plate is allowed to slide along through the connecting rod, so that the rubber scraper is pressed against the second filter screen to slide, and the adsorbed dust and impurities are scraped off to avoid clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the assembly shell of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the installation shell of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the pressing plate of the utility model;

[0021] Figure 5 It is a schematic diagram of the installation structure of the first sliding plate of the utility model.

[0022] Legend:

[0023] 1. Assembly shell; 2. Limit plate; 3. Switch power supply body; 4. Ventilation mechanism; 401. Mounting shell; 402. Cooling fan; 403. First filter; 404. First baffle; 405. Second baffle; 406. Small filter; 407. High efficiency filter; 5. Cover; 6. Slide; 7. Press plate; 8. Damping spring; 9. Limit column; 10. Limit hole; 11. Adjustment mechanism; 1101. Connecting shell; 1102. First sliding plate; 1103. Second filter; 1104. Second sliding plate; 1105. Connecting rod; 1106. Rubber scraper. DETAILED DESCRIPTION

[0024] Reference Figure 1-5 The utility model provides a substrate-type small-volume switching power supply: comprising an assembly shell 1, a limiting plate 2 is fixed to the bottom ends of both sides of the inner wall of the assembly shell 1, a switching power supply body 3 is slidably connected to the bottom end of the limiting plate 2, and a ventilation mechanism 4 is arranged at the rear end of the assembly shell 1;

[0025] The ventilation mechanism 4 includes a mounting shell 401, which is fixedly mounted at the rear end of the assembly shell 1, a heat dissipation fan 402 is embedded in the outer wall of the mounting shell 401 away from the assembly shell 1, a first filter 403 is installed on the outer wall of the mounting shell 401 facing the heat dissipation fan 402, a first baffle 404 is fixed inside the mounting shell 401, a second baffle 405 is arranged on one side of the first baffle 404 inside the mounting shell 401, a plurality of small filters 406 are embedded inside the first baffle 404 and the second baffle 405, a high-efficiency filter 407 is embedded in the outer wall of the mounting shell 401 that is in contact with the assembly shell 1, and the small filters 406 are staggeredly embedded through the first baffle 404 and the second baffle 405 to prevent water from being splashed, which can have a certain blocking effect when water enters the mounting shell 401.

[0026] As a further implementation scheme of the above technical scheme: the mounting shell 401 is connected to the assembly shell 1, and the mounting shell 401 is detachably connected to the high-efficiency filter 407 by bolts. The high-efficiency filter 407 can slow down the time for air to enter the assembly shell 1. At the same time, the high-efficiency filter 407 fits with the switching power supply body 3, can absorb heat and preheat in advance, and avoid cold air directly entering to cause water droplets, which are adsorbed on the switching power supply body 3 and cause damage.

[0027] As a further implementation scheme of the above technical scheme: slide grooves 6 are opened on both sides of the inner wall of the assembly shell 1, and a cover plate 5 is slidably connected inside the slide groove 6. The cover plate 5 slides through the slide groove 6 to close the assembly shell 1 and is fixedly connected by bolts.

[0028] In specific implementation, when the switching power supply body 3 is inside the assembly shell 1, it is limited by the limit plate 2 to avoid shaking. The heat dissipation fan 402 facilitates the air to be filtered through the first filter 403 and then transported to the installation shell 401. After secondary filtration through the first baffle 404 and the second baffle 405 and the small filter 406, it enters the high-efficiency filter 407. The high-efficiency filter 407 attached to the switching power supply body 3 has a certain amount of heat due to heat transfer, thereby preheating the cold air to avoid direct entry and causing water droplets to form due to alternating hot and cold.

[0029] As a further implementation scheme of the above technical scheme: a damping spring 8 is embedded inside the cover 5, and one end of the damping spring 8 passing through the cover 5 is connected to a pressing plate 7. After the cover 5 is closed, the damping spring 8 pushes the pressing plate 7 to press the connecting cable, thereby elastically tightening the connecting cable to prevent it from moving or shaking due to force, affecting the power connection.

[0030] As a further implementation scheme of the above technical scheme: a limiting column 9 is fixed at the bottom end of the pressing plate 7, and a limiting hole 10 is opened at the inner bottom end of the assembly shell 1 corresponding to the position of the limiting column 9. The limiting column 9 at the bottom end of the pressing plate 7 is inserted into the limiting hole 10 for limiting the position, thereby preventing the pressing plate 7 from shaking under force. At the same time, a certain gap is left when the cable is tightened to facilitate air circulation and thus the internal hot air flows out.

[0031] As a further implementation scheme of the above technical scheme: an adjustment mechanism 11 is arranged on both sides of the outer wall of the assembly shell 1, and the adjustment mechanism 11 includes a connecting shell 1101, and the connecting shell 1101 is fixedly installed on both sides of the outer wall of the assembly shell 1, and a second filter screen 1103 is embedded in the positions of the connecting shell 1101 on both sides of the outer wall of the assembly shell 1, and the first sliding plate 1102 and the second sliding plate 1104 are slidably connected inside the connecting shell 1101, and a connecting rod 1105 is fixed between the first sliding plate 1102 and the second sliding plate 1104, and a rubber scraper 1106 is connected to the outer wall of the first sliding plate 1102 and the second sliding plate 1104 facing the second filter screen 1103, and the first sliding plate 1102 is pulled, and the second sliding plate 1104 is driven by the connecting rod 1105 to slide along the assembly shell 1, so that the second filter screen 1103 is switched and closed.

[0032] As a further implementation scheme of the above technical scheme: the rubber scraper 1106 is bonded and connected to the first sliding plate 1102, and the rubber scraper 1106 is tightly fitted with the second filter 1103. The two rubber scrapers 1106 pass through the first sliding plate 1102 and the second sliding plate 1104 and slide along the second filter 1103, thereby scraping off dust and the like to avoid clogging.

[0033] In specific implementation, after the cover 5 is closed, the damping spring 8 elastically pushes the pressing plate 7 to limit the connecting cable, and at the same time, the limiting column 9 of the pressing plate 7 penetrates into the limiting hole 10 to prevent the pressing plate 7 from being subjected to force and causing the damping spring 8 to twist, or the pressing plate 7 to shake. By pulling the first sliding plate 1102, the second sliding plate 1104 is driven by the connecting rod 1105 to slide in the connecting shell 1101, thereby opening and closing. Depending on the weather, it is opened when it is hot to improve the heat dissipation efficiency, and closed when it is cold to prevent cold air from entering and causing small water droplets. The first sliding plate 1102 and the second sliding plate 1104 drive the corresponding rubber scraper 1106 to slide against the second filter 1103, thereby removing adsorbed dust and avoiding blockage.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A substrate-type small-volume switching power supply, characterized in that: It comprises an assembly shell (1), wherein limit plates (2) are fixed at the bottom ends of both sides of the inner wall of the assembly shell (1), and the bottom ends of the limit plates (2) are slidably connected to a switch power supply body (3), and a ventilation mechanism (4) is provided at the rear end of the assembly shell (1); The ventilation mechanism (4) comprises a mounting shell (401), wherein the mounting shell (401) is fixedly mounted at the rear end of the assembly shell (1), and a heat dissipation fan (402) is embedded in the outer wall of the mounting shell (401) away from the assembly shell (1), and a first filter (403) is installed in the outer wall of the mounting shell (401) facing the heat dissipation fan (402), a first baffle (404) is fixed inside the mounting shell (401), and a second baffle (405) is arranged on one side of the first baffle (404) inside the mounting shell (401), a plurality of small filter screens (406) are embedded inside the first baffle (404) and the second baffle (405), and a high-efficiency filter (407) is embedded in the outer wall of the mounting shell (401) that is in contact with the assembly shell (1).

2. The substrate-type small-volume switching power supply according to claim 1, characterized in that: The installation shell (401) is in communication with the assembly shell (1), and the installation shell (401) is detachably connected to the high-efficiency filter (407) via bolts.

3. The substrate-type small-volume switching power supply according to claim 1, characterized in that: Slide grooves (6) are provided on both sides of the inner wall of the assembly shell (1), and a cover plate (5) is slidably connected inside the slide groove (6).

4. The substrate-type small-volume switching power supply according to claim 3, characterized in that: A damping spring (8) is embedded inside the cover plate (5), and one end of the damping spring (8) that passes through the cover plate (5) is connected to a pressing plate (7).

5. The substrate-type small-volume switching power supply according to claim 4, characterized in that: A limiting column (9) is fixed at the bottom end of the pressing plate (7), and a limiting hole (10) is provided at the inner bottom end of the assembly shell (1) at a position corresponding to the limiting column (9).

6. The substrate-type small-volume switching power supply according to claim 1, characterized in that: An adjustment mechanism (11) is provided on both sides of the outer wall of the assembly shell (1), and the adjustment mechanism (11) comprises a connecting shell (1101), the connecting shell (1101) is fixedly mounted on both sides of the outer wall of the assembly shell (1), and a second filter screen (1103) is embedded at positions on both sides of the outer wall of the assembly shell (1) corresponding to the connecting shell (1101), a first sliding plate (1102) and a second sliding plate (1104) are slidably connected inside the connecting shell (1101), and a connecting rod (1105) is fixed between the first sliding plate (1102) and the second sliding plate (1104), and a rubber scraper (1106) is connected to the outer wall of the first sliding plate (1102) and the second sliding plate (1104) facing the second filter screen (1103).

7. The substrate-type small-volume switching power supply according to claim 6, characterized in that: The rubber scraper (1106) is bonded to the first sliding plate (1102), and the rubber scraper (1106) is tightly fitted to the second filter screen (1103).

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