Fan cover with dustproof structure

Abstract

The utility model discloses a fan cover with a dustproof structure, and relates to the technical field of fan cover dust prevention. The device comprises a shell, a first filter screen is movably installed on one side of the shell, a cleaning brush is rotatably installed on the first filter screen, a ratchet wheel is fixedly installed on the cleaning brush, the ratchet wheel is meshed with a pawl, the pawl is fixedly installed on an output shaft of a driving motor through a reset spring, and a cooling fan is fixedly installed on the output shaft of the driving motor. The cooling fan is rotationally installed in the shell, and a second filter screen is fixedly installed on the other side of the shell through a fixing mechanism. By arranging the ratchet wheel, the pawl and the cleaning brush, automatic cleaning of the first filter screen is achieved. When the driving motor rotates forwards, the pawl drives the ratchet wheel to rotate, the cleaning brush is driven to wipe the filter screen, dust is effectively removed, and the dust prevention and filtering efficiency is improved. During reverse rotation, the pawl is not meshed with the ratchet wheel, meaningless rotation is avoided, and stability and durability of equipment are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of fan cover dustproof technology, and specifically relates to a dustproof fan cover structure. Background Technology

[0002] A cooling fan is a fan structure used for ventilation and heat dissipation. It typically consists of a motor and fan blades. The motor converts electrical energy into mechanical energy to drive the fan blades to rotate, thereby generating airflow to create wind and dissipate heat. A dustproof fan cover is a structural device designed to protect the fan and prevent dust and other impurities from entering its interior. It usually consists of a housing that covers the fan and is equipped with a filter or other filtration mechanism to block dust and debris from entering the fan area, thus keeping the fan clean and operating efficiently.

[0003] Currently, after prolonged use, fan covers on the market often accumulate a large amount of dust and grime. This dust not only affects the cleanliness of the fan cover's appearance, but more importantly, it hinders the fan's effective heat dissipation, leading to a decrease in the fan's operating efficiency and potentially causing overheating, which threatens the safe operation of the equipment. Summary of the Invention

[0004] In view of the problems in the related technologies, this utility model proposes a dustproof fan cover to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a dustproof fan cover, including a housing. A first filter screen is movably installed on one side of the housing. A cleaning brush is rotatably installed on the first filter screen. A ratchet is fixedly installed on the cleaning brush. The ratchet engages with a pawl. The pawl is fixedly installed on the output shaft of a drive motor by a return spring. A cooling fan is fixedly installed on the output shaft of the drive motor. The cooling fan is rotatably installed inside the housing. A second filter screen is fixedly installed on the other side of the housing by a fixing mechanism.

[0007] Furthermore, the cleaning brush is in contact with the surface of the first filter screen, and one end of the return spring is fixedly mounted on the pawl, while the other end is fixedly mounted on the output shaft of the drive motor.

[0008] Furthermore, the housing is fixedly mounted with two connecting rods, and the drive motor is fixedly mounted on the two connecting rods.

[0009] Furthermore, the fixing mechanism includes a slider disposed on the second filter screen, the slider being slidably connected inside a groove, the groove being formed on the housing.

[0010] Furthermore, the slider has a first hole, the housing has a second hole, and a locking rod is slidably connected between the first hole and the second hole.

[0011] Furthermore, fixing blocks are fixedly installed on both sides of the lever, the fixing blocks are slidably connected inside the housing, one end of the spring is fixedly installed on the fixing block, and the other end of the spring is fixedly installed inside the housing.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The dustproof fan cover proposed in this utility model achieves automatic cleaning of the first filter screen through a structure of ratchet, pawl, and cleaning brush. When the drive motor rotates in the forward direction, the pawl drives the ratchet to rotate, which in turn drives the cleaning brush to wipe the surface of the first filter screen, effectively removing dust and impurities attached to the filter screen and improving the dustproof effect and filtration efficiency of the fan cover. At the same time, when the drive motor is started in the reverse direction, the pawl and ratchet do not engage, avoiding unnecessary rotation of the cleaning brush and ensuring the stability and durability of the equipment.

[0014] 2. This utility model also incorporates a second filter fixing mechanism for easy disassembly and installation, including components such as a slider, a groove, and a locking rod. By pulling the locking rod, the second filter can be easily released, allowing operators to conveniently remove the filter for replacement or cleaning, greatly improving maintenance convenience and efficiency. Furthermore, the fixing mechanism utilizes the reaction force of a spring to automatically reset the locking rod, ensuring a secure installation of the second filter and preventing a decrease in dustproof performance due to a loose filter. This design not only enhances the practicality of the fan cover but also provides a strong guarantee for its long-term stable operation.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the back of the present invention. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the back of the present invention. Figure 2 ;

[0020] Figure 4 This is an enlarged view of point A in this utility model;

[0021] Figure 5 This is an exploded view of the present invention;

[0022] Figure 6 This is a schematic diagram of the clamp rod of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Housing; 2. First filter screen; 3. Cleaning brush; 4. Ratchet; 5. Pawl; 6. Return spring; 7. Drive motor; 8. Cooling fan; 9. Second filter screen; 10. Connecting rod; 11. Slider; 12. Slide groove; 13. First hole; 14. Second hole; 15. Locking rod; 16. Fixing block; 17. Spring. Detailed Implementation

[0025] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0026] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0027] Please see Figures 1-6 As shown, this utility model is a dustproof fan cover, including a housing 1. A first filter screen 2 is movably installed on one side of the housing 1. A cleaning brush 3 is rotatably installed on the first filter screen 2. A ratchet 4 is fixedly installed on the cleaning brush 3. A pawl 5 is engaged with the ratchet 4. The pawl 5 is fixedly installed on the output shaft of the drive motor 7 by a return spring 6. A cooling fan 8 is fixedly installed on the output shaft of the drive motor 7. The cooling fan 8 is rotatably installed inside the housing 1. A second filter screen 9 is fixedly installed on the other side of the housing 1 by a fixing mechanism.

[0028] The working principle of the dustproof fan cover proposed in this utility model is that the drive motor 7 is started in reverse, thereby driving the cooling fan 8 to rotate, and thus performing heat dissipation.

[0029] It is worth noting that by starting the drive motor 7 in the forward direction, the return spring 6 is driven to rotate, which in turn drives the pawl 5 to rotate. At this time, the pawl 5 and the ratchet 4 mesh with each other, which drives the ratchet 4 to rotate, which in turn drives the cleaning brush 3 to rotate. Since the cleaning brush 3 is in contact with the surface of the first filter screen 2, the dust on the surface of the first filter screen 2 is cleaned.

[0030] Furthermore, when the drive motor 7 is started in reverse, the ratchet 4 and the pawl 5 do not engage, thus preventing the ratchet 4 from rotating and consequently preventing the cleaning brush 3 from rotating.

[0031] In one embodiment, for the cleaning brush 3, the cleaning brush 3 is in contact with the surface of the first filter screen 2, one end of the return spring 6 is fixedly mounted on the pawl 5, and the other end is fixedly mounted on the output shaft of the drive motor 7.

[0032] The working principle of the dustproof fan cover proposed in this utility model is that, by setting the return spring 6, the ratchet 4 and the pawl 5 can be kept in an engaged relationship at all times.

[0033] In one embodiment, for the housing 1 described above, the housing 1 is fixedly mounted with two connecting rods 10, and the drive motor 7 is fixedly mounted on the two connecting rods 10.

[0034] In one embodiment, the fixing mechanism includes a slider 11 disposed on the second filter screen 9, the slider 11 being slidably connected to the inside of the slide groove 12, the slide groove 12 being formed on the housing 1.

[0035] In one embodiment, the slider 11 has a first hole 13 and the housing 1 has a second hole 14. The first hole 13 and the second hole 14 are slidably connected to a locking rod 15.

[0036] In one embodiment, for the aforementioned lever 15, fixing blocks 16 are fixedly installed on both sides of the lever 15. The fixing blocks 16 are slidably connected inside the housing 1. One end of a spring 17 is fixedly installed on the fixing block 16, and the other end of the spring 17 is fixedly installed inside the housing 1.

[0037] The working principle of the dustproof fan cover proposed in this utility model is as follows: when it is necessary to disassemble the second filter screen 9, by pulling the locking rod 15, the locking rod 15 is disengaged from the first hole 13 and the second hole 14, thereby releasing the locking of the second filter screen 9, so that the operator can easily remove the second filter screen 9 for replacement or cleaning.

[0038] It is worth noting that removing the second filter 9 also makes it easier to clean or repair the cooling fan 8.

[0039] Furthermore, when the second filter screen 9 needs to be installed, pull the lever 15 to move the fixing block 16, thereby compressing the spring 17. Then, slide the slider 11 of the second filter screen 9 into the groove 12, and then release the lever 15. The reaction force of the spring 17 will drive the lever 15 to reset, thereby passing through the first hole 13 and the second hole 14, thus completing the fixed installation of the second filter screen 9.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A dustproof fan cover, comprising a housing (1), characterized in that: A first filter screen (2) is movably installed on one side of the housing (1). A cleaning brush (3) is rotatably installed on the first filter screen (2). A ratchet (4) is fixedly installed on the cleaning brush (3). A pawl (5) is engaged with the ratchet (4). The pawl (5) is fixedly installed on the output shaft of the drive motor (7) by a return spring (6). A cooling fan (8) is fixedly installed on the output shaft of the drive motor (7). The cooling fan (8) is rotatably installed inside the housing (1). A second filter screen (9) is fixedly installed on the other side of the housing (1) by a fixing mechanism.

2. The dustproof fan cover according to claim 1, characterized in that, The cleaning brush (3) is attached to the surface of the first filter screen (2), and one end of the return spring (6) is fixedly mounted on the pawl (5), and the other end is fixedly mounted on the output shaft of the drive motor (7).

3. A dustproof fan cover according to claim 2, characterized in that, The housing (1) is fixedly mounted with connecting rods (10), and there are two connecting rods (10). The drive motor (7) is fixedly mounted on the two connecting rods (10).

4. A dustproof fan cover according to claim 1, characterized in that, The fixing mechanism includes a slider (11) disposed on the second filter screen (9), the slider (11) being slidably connected inside the slide groove (12), the slide groove (12) being formed on the housing (1).

5. A dustproof fan cover according to claim 4, characterized in that, The slider (11) has a first hole (13), and the housing (1) has a second hole (14). The first hole (13) and the second hole (14) are slidably connected to a locking rod (15).

6. A dustproof fan cover according to claim 5, characterized in that, Fixing blocks (16) are fixedly installed on both sides of the lever (15). The fixing blocks (16) are slidably connected inside the housing (1). One end of the spring (17) is fixedly installed on the fixing block (16), and the other end of the spring (17) is fixedly installed inside the housing (1).

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