A safety protection device for power switch

Abstract

The utility model relates to the technical field of switching power supply discloses a power switch safety protection device, including the protection box for protecting power switch body, is equipped with the access hole on the protection box, and the access hole is hinged with the door, and the door is installed with the bolt, and the box body of protection box is installed with the clamping component of quick and automatic clamping bolt, the utility model discloses setting the clamping component of quick and automatic clamping bolt, only need to turn the clamping plate when disassembling, and disassembling is convenient, easy to use.

Description

Technical Field

[0001] This utility model relates to the field of switching power supply technology, and in particular to a power switch safety protection device. Background Technology

[0002] A switching power supply, also known as a switching converter or switching power supply, is a high-frequency power conversion device and a type of power supply. Its function is to convert a voltage at a certain level into the voltage or current required by the user through different architectures. The input of a switching power supply is mostly AC or DC power, while the output is mostly devices that require DC power, such as personal computers. The switching power supply performs the voltage and current conversion between these two sources.

[0003] The switching power supply with accessory protection function disclosed in announcement number CN219893169U includes a power switch body, a protective box for protecting the power switch body at its outer end; heat dissipation meshes are provided at both ends of the protective box, and cleaning mechanisms for cleaning dust on the heat dissipation meshes are provided at both ends of the power switch body; the cleaning mechanisms include a cleaning plate located at the outer end of the heat dissipation mesh, a first movable plate fixedly mounted on the top of the cleaning plate, a second movable plate fixedly mounted on the end of the first movable plate near the protective box, and two sliding grooves on the left and right sides of the top of the protective box, with the second movable plate located inside the sliding grooves, capable of cleaning dust on the heat dissipation mesh. Dust is cleaned; the front of the protective box is connected to the door via a hinge, and the inside of the protective box is equipped with a fixing mechanism to secure the door; the fixing mechanism includes two limiting blocks fixedly installed at the rear of the door, with insertion holes inside the limiting blocks; first mounting slots are opened on both the left and right sides of the bottom of the protective box, and second mounting slots are opened on both the left and right sides of the bottom of the protective box; a baffle is installed inside the second mounting slot, and an insertion rod passes through the baffle; the end of the insertion rod away from the protective box passes through the protective box and extends out of the protective box; two springs are fixedly installed on the end of the baffle away from the baffle, and the ends of the springs away from the baffle are fixedly connected to the inner wall of the protective box, which can fix the door.

[0004] Based on the above technical features, the problem is that in the existing technology, when repairing the power switch body, all the plug rods need to be pulled at the same time to open the box door, which is inconvenient to operate and not easy to use.

[0005] Therefore, it is necessary to solve the above problems by using a power switch safety protection device. Utility Model Content

[0006] The purpose of this invention is to provide a power switch safety protection device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a power switch safety protection device, comprising a protective box for protecting the power switch body, wherein the protective box has an inspection port and a door is hinged to the inspection port; a latch is installed on the door, and a snap-fit ​​assembly for quick and automatic latch engagement is installed on the body of the protective box.

[0008] Preferably, the latching assembly includes a latch seat, which is fixed to the body of the protective box; a support guide plate and a mounting plate are fixedly disposed on the latch seat; the plane of the pin that rotates with the box door is located between the support guide plate and the mounting seat; a rotating shaft is rotatably mounted on the end of the mounting plate away from the latch seat, and a latching plate is fixedly disposed on the rotating shaft; a first torsion spring is sleeved on the rotating shaft, one end of the first torsion spring is fixedly connected to the latching plate, and the other end is fixedly connected to the mounting plate; the end of the latching plate away from the rotating shaft abuts against the support guide plate, and the latching plate is located on the trajectory of the pin that rotates with the box door.

[0009] Preferably, a support shaft is fixedly installed on the door, and the pin is arranged radially along the support shaft and rotatably connected to the support shaft; a second torsion spring is sleeved on the support shaft, one end of the second torsion spring is fixedly connected to the pin, and the other end is fixedly connected to the door.

[0010] Preferably, the protective box has an air inlet and an air outlet, and filters are fixedly installed at both the air inlet and the air outlet; a cooling fan is fixedly installed at the air inlet.

[0011] Preferably, a scraper is slidably installed on the upper limit of the protective box, and the scraper slides in contact with the filter surface of the filter screen located at the air inlet; the scraper and the output shaft of the cooling fan are driven by a linkage component.

[0012] Preferably, the linkage component includes a U-shaped frame, which is fixedly connected to the scraper; two racks are fixedly arranged inside the U-shaped frame, the two racks are parallel to each other and their teeth are opposite each other; an incomplete gear is fixedly sleeved on the output shaft of the cooling fan, the incomplete gear is located between the two racks, and the teeth of the incomplete gear are in contact meshing with the teeth of the two racks.

[0013] The technical effects and advantages of this utility model are as follows: This utility model is equipped with a snap-fit ​​component that can quickly and automatically snap the pin. During disassembly and assembly, it is only necessary to move the snap plate, which is convenient and easy to use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is an enlarged schematic diagram of point A of this utility model;

[0016] Figure 3This is a schematic diagram of the interior of the protective box of this utility model;

[0017] Figure 4 This is a schematic diagram of the linkage component of this utility model.

[0018] In the diagram: 1. Protective box; 2. Box door; 3. Pin; 4. Card plate; 5. Support guide plate; 6. Cooling fan; 7. Incomplete gear; 8. Fixing plate; 9. Limiting slide; 10. Scraper; 11. Recurve frame; 12. Rack; 13. Filter screen; 14. Power switch body. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides, for example Figures 1 to 4 The power switch safety protection device shown includes a protective box 1 for protecting the power switch body 14. The protective box 1 has an access panel, and a door 2 is hinged to the access panel. A pin 3 is installed at the end of the door 2 away from the hinge point with the protective box 1, and a quick-connect and automatic locking assembly for the pin 3 is installed on the body of the protective box 1.

[0021] Specifically, the snap-fit ​​assembly includes a snap-fit ​​base, which is fixed to the housing of the protective box 1. A support guide plate 5 and a mounting plate are fixedly mounted on the snap-fit ​​base. The plane of the latch 3 that rotates with the box door 2 is located between the support guide plate 5 and the mounting plate.

[0022] The mounting plate is rotatably mounted on the end furthest from the mounting base, and a clamping plate 4 is fixedly mounted on the clamping plate 4. The clamping plate 4 is parallel to the clamping plate 4 and is fixedly connected to the clamping plate 4 along the radial direction of the clamping plate 4.

[0023] A first torsion spring is fitted on the rotating shaft. One end of the first torsion spring is fixedly connected to the clamping plate 4, and the other end is fixedly connected to the mounting plate.

[0024] The end of the card plate 4 away from the pivot abuts against the support guide plate 5, and the card plate 4 is located on the trajectory of the latch 3 as the door 2 rotates.

[0025] When pin 3 contacts the card plate 4, it engages with the card plate 4 in a transmission engagement. When pin 3 is located between the card plate 4 and the card holder, the card plate 4 engages with pin 3 in a locking and limiting engagement.

[0026] A support shaft is fixedly installed on the door 2, and a pin 3 is arranged radially along the support shaft and rotatably connected to the support shaft.

[0027] A second torsion spring is sleeved on the support shaft. One end of the second torsion spring is fixedly connected to the pin 3, and the other end is fixedly connected to the door 2.

[0028] The plane of rotation of the latch 3 with the support shaft as the center of rotation is perpendicular to the plane that rotates with the door 2.

[0029] The protective box 1 has an air inlet and an air outlet, and a filter screen 13 is fixedly installed at both the air inlet and the air outlet.

[0030] A fixing plate 8 is fixedly installed inside the air inlet, and a cooling fan 6 is fixedly mounted on the fixing plate 8. Two filters 13 are installed inside the air inlet, and the fixing plate 8 is located between the two filters 13.

[0031] Two scrapers 10 are slidably installed on the upper limit of the protective box 1, and the two scrapers 10 are symmetrically arranged with respect to the fixed plate 8. The two scrapers 10 correspond one-to-one with the two filters 13 in the air inlet, and each scraper 10 slides in contact with the filter surface of the corresponding filter 13.

[0032] Two limiting grooves 9 are provided on the body of the protective box 1. Both limiting grooves 9 are T-shaped grooves. The two limiting grooves 9 correspond one-to-one with two scrapers 10. A matching T-shaped block is slidably installed in each limiting groove 9. Each T-shaped block is fixedly connected to the scraper 10 corresponding to its limiting groove 9.

[0033] The two scrapers 10 are driven by the output spindle of the cooling fan 6 through a linkage assembly.

[0034] Specifically, the linkage component includes a loop frame 11, which is located between two scrapers 10 and is fixedly connected to the two scrapers 10.

[0035] Two racks 12 are fixedly installed inside the U-shaped frame 11. The two racks 12 are parallel to each other and their teeth are facing each other. An incomplete gear 7 is fixedly sleeved on the output spindle of the cooling fan 6. The incomplete gear 7 is located between the two racks 12, and the teeth of the incomplete gear 7 are in contact meshing with the teeth of the two racks 12.

[0036] In this embodiment, a speed reducer is provided between the output shaft of the cooling fan 6 and the incomplete gear 7, and the speed reducer is fixed on the fixing plate 8. The output shaft of the cooling fan 6 is coaxially and fixedly connected to the input shaft of the speed reducer, and the incomplete gear 7 is fixedly sleeved on the output shaft of the speed reducer. This ensures that the sliding speed of the scraper 10 is not too fast.

[0037] Meanwhile, the protective box 1 in this embodiment is provided with an interface for connecting the power switch body 14, which is not shown.

[0038] Working principle: When using this power switch, connect the interface to the circuit. The power switch generates heat during operation. Simultaneously, the cooling fan 6 starts and blows cool air into the protective casing 1. The cool air cools the power switch body 14 and, after heat exchange, forms hot air, which is then blown out through the air outlet.

[0039] When the cooling fan 6 is working, the output spindle drives the incomplete gear 7 to rotate via the reducer. During this process, the teeth of the incomplete gear 7 intermittently mesh with the teeth of the two racks 12. When the teeth of the incomplete gear 7 mesh with the teeth of one rack 12, they do not mesh with the teeth of the other rack 12. Simultaneously, after the teeth of the incomplete gear 7 mesh with the teeth of one rack 12, the teeth of the incomplete gear 7 push the meshed rack 12 to move. As the rack 12 moves, it drives the return frame 11 to move. The return frame 11 drives the two scrapers 10 to clean the filter surfaces of the corresponding filter screens 13.

[0040] Since the rotation direction of the incomplete gear 7 remains constant, the two racks 12 move in opposite directions, thus causing the return frame 11 to reciprocate intermittently.

[0041] When the power switch body 14 needs to be inspected, push the pin 3 away from the support guide plate 5, and the pin 3 will rotate away from the support guide plate 5. After the pin 3 is disengaged from the entire bracket, pull the pin 3 away from the protective box 1, and the pin 3 will cause the box door 2 to rotate and open the inspection port.

[0042] When pin 3 rotates away from the support guide plate 5, the second torsion spring is twisted. After the access panel 2 is fully opened, pin 3 is released. At this time, pin 3 rotates back under the elastic force of the second torsion spring. Afterwards, the power switch body 14 is replaced or repaired.

[0043] After maintenance is completed, push the door 2, which will rotate and close the maintenance opening. During this process, the door 2 drives the latch 3 to move synchronously. As the latch 3 moves, it gradually approaches the retaining plate 4 and eventually contacts it. After contacting the retaining plate 4, the latch 3 pushes the retaining plate 4 to rotate away from the support guide plate 5. At the same time, the retaining plate 4 twists the first torsion spring. Then, as the door 2 continues to rotate, the latch 3 finally contacts the retaining seat. Simultaneously, the latch 3 and the retaining plate 4 slide into contact, and under the action of the first torsion spring, the retaining plate 4 rotates closer to the support guide plate 5 and finally abuts against it. At this point, the end of the retaining plate 4 away from the pivot is tangent to the latch 3, and the tangent plane between the retaining plate 4 and the latch 3 is perpendicular to the support guide plate 5.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power switch safety protection device, comprising a protective housing (1) for protecting the power switch body (14), characterized in that: The protective box (1) has an inspection port, and a door (2) is hinged to the inspection port; a latch (3) is installed on the door (2), and a fast and automatic latching assembly for the latch (3) is installed on the body of the protective box (1).

2. The power switch safety protection device according to claim 1, characterized in that: The snap-fit ​​assembly includes a snap-fit ​​base, which is fixed to the body of the protective box (1); a support guide plate (5) and a mounting plate are fixedly installed on the snap-fit ​​base; the plane of the pin (3) rotating with the box door (2) is located between the support guide plate (5) and the mounting base; a rotating shaft is rotatably installed on the end of the mounting plate away from the snap-fit ​​base, and a snap-fit ​​plate (4) is fixedly installed on the rotating shaft; a first torsion spring is sleeved on the rotating shaft, one end of the first torsion spring is fixedly connected to the snap-fit ​​plate (4), and the other end is fixedly connected to the mounting plate; the end of the snap-fit ​​plate (4) away from the rotating shaft abuts against the support guide plate (5), and the snap-fit ​​plate (4) is located on the trajectory of the pin (3) rotating with the box door (2).

3. The power switch safety protection device according to claim 2, characterized in that: A support shaft is fixedly installed on the door (2), and the pin (3) is arranged radially along the support shaft and rotatably connected to the support shaft; a second torsion spring is sleeved on the support shaft, one end of the second torsion spring is fixedly connected to the pin (3), and the other end is fixedly connected to the door (2).

4. A power switch safety protection device according to claim 1, characterized in that: The protective box (1) has an air inlet and an air outlet on its body, and a filter screen (13) is fixedly installed at both the air inlet and the air outlet; a cooling fan (6) is fixedly installed at the air inlet.

5. A power switch safety protection device according to claim 4, characterized in that: The upper limit of the protective box (1) is slidably mounted with a scraper (10), and the scraper (10) slides in contact with the filter surface of the filter screen (13) located at the air inlet; the scraper (10) and the output shaft of the cooling fan (6) are driven by a linkage component.

6. A power switch safety protection device according to claim 5, characterized in that: The linkage component includes a spiral frame (11), which is fixedly connected to the scraper (10); two racks (12) are fixedly arranged inside the spiral frame (11), the two racks (12) are parallel to each other and their teeth are opposite each other; an incomplete gear (7) is fixedly sleeved on the output shaft of the cooling fan (6), the incomplete gear (7) is located between the two racks (12), and the teeth of the incomplete gear (7) are in contact with the teeth of the two racks (12).

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