Dustproof filter device

Abstract

The utility model provides a dustproof filter device, include: lower cover is provided with first buckling joint structure and positioning cavity, filter screen is set in positioning cavity, and, upper cover, can wear and set in positioning cavity and be provided with with first buckling joint structure buckle joint second buckling joint structure, the buckling direction of first buckling joint structure and second buckling joint structure buckle joint is perpendicular with the plane of filter screen. Through make first buckling joint structure and second buckling joint structure unfasten when upper cover can separate from positioning cavity to with lower cover separate, make filter screen can whole exposure in outside, convenient to take out replacement, and, because upper cover can wear and set in positioning cavity, lower cover can prevent upper cover in the buckling process and sway, thereby avoid first buckling joint structure and second buckling joint structure occur dislocation, improve first buckling joint structure and second buckling joint structure buckle joint precision, be favorable to upper cover and lower cover buckle joint fixed, thereby improve dustproof filter device's use experience.

Description

Technical Field

[0001] This utility model relates to the technical field of dust filter devices, and in particular to a dust filter device. Background Technology

[0002] The dust filter screen has a sliding connection between its upper and lower covers, and the upper cover can slide to engage with and fix the lower cover. The filter screen is installed on the lower cover and located between the upper and lower covers. One of the upper and lower covers has a fastening part, and the other has a fastening groove. When the upper cover slides a certain distance along the sliding track, the fastening part engages into the fastening groove, thereby completing the mutual fixation between the upper and lower covers.

[0003] In related technologies, the top cover slides on the plane where the filter is located, and the sliding distance between the top cover and the bottom cover is relatively small, so that only a part of the filter is exposed, making it inconvenient to remove and replace. Moreover, there is a risk that the top cover will deviate from the sliding track during the sliding process, making it impossible for the fastening part to be fastened into the fastening groove, thus making it impossible to fix the top cover and the bottom cover together, resulting in a poor user experience of the dust filter. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dust filter device, which aims to solve the problem of poor user experience of dust filter screens in related technologies.

[0005] To solve the above-mentioned technical problems, this utility model provides a dust filter device, comprising: The lower cover is provided with a first fastening structure and a positioning cavity; A filter screen is disposed within the positioning cavity; and, The top cover can be inserted into the positioning cavity and is provided with a second fastening structure that is fastened and connected to the first fastening structure. The fastening direction of the first fastening structure and the second fastening structure when fastened is perpendicular to the plane where the filter screen is located. When the first and second fastening structures are engaged, the filter screen is located between the upper cover and the lower cover, and the upper cover is at least partially assembled in the positioning cavity; when the first and second fastening structures are disengaged, the upper cover can be detached from the positioning cavity to separate from the lower cover.

[0006] Optionally, one of the first fastening structure and the second fastening structure is a fastening groove, and the other is a fastening part, wherein the fastening part is fastened to the fastening groove.

[0007] Optionally, the first fastening structure includes a fastening seat disposed on the lower cover and having the fastening groove, and the second fastening structure includes a fastening portion disposed on the upper cover.

[0008] Optionally, the fastening seat is further provided with a clamping cavity, through which the fastening seat is clamped onto the lower cover.

[0009] Optionally, the fastening seat includes: A substrate is disposed on the lower cover; A first side plate is disposed at one end of the substrate, and the first side plate is provided with the fastening groove; and... The second side plate is elastically connected to the other end of the substrate and is used to provide a rebound force toward the first side plate. The substrate, the first side plate and the second side plate together enclose the clamping cavity.

[0010] Optionally, the end of the substrate connected to the second side plate is recessed inward to form a thinning groove.

[0011] Optionally, the second side plate includes: A connecting arm, one end of which is disposed on the substrate; and, An abutment portion is disposed at one end of the connecting arm away from the substrate. The connecting arm is located between the two opposite ends of the abutment portion. Both ends of the abutment portion are bent toward the lower cover, and both ends of the abutment portion abut against the lower cover.

[0012] Optionally, the abutment portion has a notch on the side away from the connecting arm, and the notch is located between the opposite ends of the abutment portion.

[0013] Optionally, the upper cover includes: Cover plate; The positioning part is formed by protruding outward from one side surface of the cover plate. The positioning part is adapted to the positioning cavity. The second fastening structure is disposed on the end of the positioning part away from the cover plate.

[0014] Optionally, the upper cover is provided with a first dustproof structure, and the lower cover is provided with a second dustproof structure. When the first fastening structure and the second fastening structure are fastened together, the filter screen is located between the first dustproof structure and the second dustproof structure.

[0015] Compared with related technologies, the dust filter device provided by this utility model has the following advantages: by setting the fastening direction of the first and second fastening structures to be perpendicular to the plane where the filter screen is located, and by allowing the upper cover to detach from the positioning cavity and separate from the lower cover when the first and second fastening structures are unfastened, the filter screen can be fully exposed to the outside, making it convenient to remove and replace; moreover, since the upper cover can be inserted into the positioning cavity, the lower cover can prevent the upper cover from shaking during the fastening process, thereby avoiding misalignment of the first and second fastening structures, improving the accuracy of the fastening of the first and second fastening structures, and facilitating the fastening and fixing of the upper and lower covers, thus improving the user experience of the dust filter device. Attached Figure Description

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

[0017] Figure 1 This is a schematic diagram of the structure of the dust filter device provided in this embodiment of the utility model; Figure 2 This is a cross-sectional view of a portion of the structure of the dust filter device provided in this embodiment of the utility model; Figure 3 This is an assembly diagram of the lower cover, filter screen, and fastening seat provided in this embodiment of the utility model; Figure 4 This is an assembly diagram of the top cover and the fastening part provided in this embodiment of the utility model; Figure 5 This is a structural schematic diagram of the fastening seat provided in an embodiment of the present utility model.

[0018] In the accompanying drawings, the reference numerals indicate: 1. Lower cover; 11. First dustproof structure; 12. Positioning cavity; 2. Filter screen; 3. Upper cover; 31. Cover plate; 32. Positioning part; 33. Second dustproof structure; 4. Fastening seat; 41. Fastening groove; 42. Clamping cavity; 43. Base plate; 431. Thinning groove; 44. First side plate; 45. Second side plate; 451. Connecting arm; 452. Abutment part; 453. Notch; 5. Fastening part; 6. Handle; 7. Fan assembly. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0022] Example: Please see Figures 1 to 5 This utility model provides a dustproof filtering device, including a lower cover 1, a filter screen 2, and an upper cover 3. The lower cover 1 is provided with a first fastening structure and a positioning cavity 12; the filter screen 2 is disposed in the positioning cavity 12; the upper cover 3 can be inserted into the positioning cavity 12 and is provided with a second fastening structure that is fastened to the first fastening structure. The fastening direction of the first fastening structure and the second fastening structure is perpendicular to the plane where the filter screen 2 is located. When the first fastening structure and the second fastening structure are fastened, the filter screen 2 is located between the upper cover 3 and the lower cover 1, and the upper cover 3 is at least partially assembled in the positioning cavity 12. When the first fastening structure and the second fastening structure are unfastened, the upper cover 3 can be disengaged from the positioning cavity 12 to separate from the lower cover 1.

[0023] By setting the snapping direction of the first and second snapping structures to be perpendicular to the plane where the filter screen 2 is located, and by ensuring that the upper cover 3 can be separated from the positioning cavity 12 and the lower cover 1 when the first and second snapping structures are unfastened, the filter screen 2 can be fully exposed to the outside world for easy removal and replacement. Moreover, since the upper cover 3 can be inserted into the positioning cavity 12, the lower cover 1 can prevent the upper cover 3 from shaking during the snapping process, thereby avoiding misalignment between the first and second snapping structures, improving the accuracy of the snapping of the first and second snapping structures, and facilitating the secure fastening of the upper cover 3 and the lower cover 1, thus improving the user experience of the dust filter device.

[0024] Please see Figure 2 In some embodiments, one of the first and second fastening structures is a fastening groove 41, and the other is a fastening part 5, which is fastened to the fastening groove 41. In this way, the upper cover 3 and the lower cover 1 are fixed by fastening connection.

[0025] It should be understood that when the first fastening structure is the fastening groove 41, the second fastening structure is the fastening part 5; when the first fastening structure is the fastening part 5, the second fastening structure is the fastening groove 41.

[0026] Please see Figure 2 and Figure 3 The first fastening structure includes a fastening seat 4 with a fastening groove 41 disposed on the lower cover 1, and the second fastening structure includes a fastening part 5 disposed on the upper cover 3. The fastening part 5 fastens into the fastening groove 41 on the fastening seat 4 to achieve fastening and fixing between the upper cover 3 and the lower cover 1.

[0027] Please see Figure 1 In some embodiments, multiple fastening slots 41 and multiple fastening parts 5 are provided. The multiple fastening slots 41 and multiple fastening parts 5 are distributed circumferentially at intervals, and the multiple fastening parts 5 are connected to the multiple fastening slots 41 in a one-to-one correspondence, so that there are multiple fastening connections between the upper cover 3 and the lower cover 1, thereby improving the fastening firmness between the upper cover 3 and the lower cover 1.

[0028] It should be understood that the number of fastening slots 41 and fastening parts 5 is set according to actual needs, such as two, three, four, etc. Multiple fastening slots 41 and multiple fastening parts 5 can be distributed at equal intervals along the circumference.

[0029] It should be noted that in some other embodiments, there may be only one snap-fit ​​groove 41 and one snap-fit ​​part 5.

[0030] Depending on actual needs, the snap-fit ​​groove 41 can be a U-shaped groove, and the snap-fit ​​part 5 can be a T-shaped block. The T-shaped block is snapped into the U-shaped groove, which helps to improve the snap-fit ​​strength.

[0031] Please see Figure 1 , Figure 3 and Figure 5 The fastener 4 is also provided with a clamping cavity 42. The fastener 4 is clamped to the lower cover 1 through the clamping cavity 42, thereby fixing the fastener 4 to the lower cover 1 and simplifying the assembly method of the fastener 4.

[0032] Please see Figure 3 and Figure 5 The fastening seat 4 includes a base plate 43, a first side plate 44, and a second side plate 45. The base plate 43 is disposed on the lower cover 1. The first side plate 44 is disposed at one end of the base plate 43 and has a fastening groove 41. The second side plate 45 is elastically connected to the other end of the base plate 43 and is used to provide a rebound force toward the first side plate 44. The base plate 43, the first side plate 44, and the second side plate 45 together form a clamping cavity 42. Thus, since the second side plate 45 can provide a rebound force toward the first side plate 44, the lower cover 1 can be clamped by the first side plate 44 and the second side plate 45.

[0033] It should be noted that the snap-fit ​​groove 41 can be connected to or spaced apart from the clamping cavity 42.

[0034] Please see Figure 5 The end of the substrate 43 connected to the second side plate 45 is recessed inward to form a thinning groove 431, which makes the connection between the substrate 43 and the second side plate 45 more prone to deformation, thereby increasing the elasticity of the second side plate 45, and thus increasing the clamping force of the fastening seat 4 in holding the lower cover 1, preventing the fastening seat 4 from falling off the lower cover 1.

[0035] Please see Figure 1 , Figure 3 and Figure 5 The second side plate 45 includes a connecting arm 451 and an abutment portion 452. One end of the connecting arm 451 is disposed on the substrate 43. The abutment portion 452 is disposed at the end of the connecting arm 451 away from the substrate 43. The connecting arm 451 is located between the two opposite ends of the abutment portion 452. Both ends of the abutment portion 452 are bent towards the lower cover 1, and both ends of the abutment portion 452 abut against the lower cover 1. Thus, the abutment portion 452 is arc-shaped, giving it a certain degree of elasticity. The two ends of the abutment portion 452 can provide a rebound force towards the first side plate 44, further increasing the clamping force of the fastening seat 4 on the lower cover 1.

[0036] Please see Figure 5 A notch 453 is provided on the side of the abutment portion 452 away from the connecting arm 451, and the notch 453 is located between the two opposite ends of the abutment portion 452. In this way, by designing the notch 453, the stress on the abutment portion 452 can be dispersed, and the concentrated stress can be guided to a predetermined area around the notch 453, reducing the risk of breakage and extending the service life of the fastener 4.

[0037] It should be noted that the number of gaps 453 is set according to actual needs, such as one, two, three, etc.

[0038] Please see Figure 1 and Figure 4 The upper cover 3 includes a cover plate 31 and a positioning part 32. The positioning part 32 protrudes outward from one side surface of the cover plate 31 and is adapted to the positioning cavity 12. The second fastening structure is provided on the end of the positioning part 32 away from the cover plate 31. The cover plate 31 and the positioning part 32 form a stepped structure, which is beneficial for positioning during the fastening process of the upper cover 3. In addition, the positioning part 32 is provided with a through cavity to ensure the connectivity of the dust filter device.

[0039] Depending on actual needs, the lower cover 1 can be ring-shaped, and the positioning part 32 can be cylindrical.

[0040] Please see Figure 1 , Figure 3 and Figure 4 The upper cover 3 is provided with a first dustproof structure 11, and the lower cover 1 is provided with a second dustproof structure 33. When the first and second fastening structures are fastened together, the filter screen 2 is located between the first dustproof structure 11 and the second dustproof structure 33. In this way, the dustproof filtration capacity of the dustproof filtration device can be improved through the first dustproof structure 11, the filter screen 2, and the second dustproof structure 33.

[0041] According to actual needs, the first dustproof structure 11 can be a louver structure set on the cover plate 31, and the second dustproof structure 33 can be a grid structure set on the lower cover 1. The grid structure is set at one end of the lower cover 1, and the filter screen 2 is placed on the grid structure.

[0042] Please see Figure 1 The upper cover 3 may also be provided with a handle 6. For example, the handle 6 is provided on the side surface of the cover plate 31 away from the positioning part 32. The handle 6 makes it convenient to apply force to the upper cover 3, which is conducive to the upper cover 3 being fastened onto or detached from the lower cover 1.

[0043] Please see Figure 1 The dust filter also includes a fan assembly 7, which is located at the end of the lower cover 1 away from the filter screen 2. The fan assembly 7 can make the airflow pass through the filter screen 2 to realize the filtration function of the dust filter.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 dust filter device, characterized in that, include: The lower cover is provided with a first fastening structure and a positioning cavity; A filter screen is disposed within the positioning cavity; as well as, The top cover can be inserted into the positioning cavity and is provided with a second fastening structure that is fastened and connected to the first fastening structure. The fastening direction of the first fastening structure and the second fastening structure when fastened is perpendicular to the plane where the filter screen is located. When the first and second fastening structures are engaged, the filter screen is located between the upper cover and the lower cover, and the upper cover is at least partially assembled in the positioning cavity; when the first and second fastening structures are disengaged, the upper cover can be detached from the positioning cavity to separate from the lower cover.

2. The dust filter device according to claim 1, characterized in that, One of the first fastening structure and the second fastening structure is a fastening groove, and the other is a fastening part, wherein the fastening part is fastened to the fastening groove.

3. The dust filter device according to claim 2, characterized in that, The first fastening structure includes a fastening seat disposed on the lower cover and having the fastening groove, and the second fastening structure includes a fastening part disposed on the upper cover.

4. The dust filter device according to claim 3, characterized in that, The fastening seat is also provided with a clamping cavity, through which the fastening seat is clamped onto the lower cover.

5. The dust filter device according to claim 4, characterized in that, The fastening seat includes: A substrate is disposed on the lower cover; A first side plate is disposed at one end of the substrate, and the first side plate is provided with the fastening groove; and... The second side plate is elastically connected to the other end of the substrate and is used to provide a rebound force toward the first side plate. The substrate, the first side plate and the second side plate together enclose the clamping cavity.

6. The dust filter device according to claim 5, characterized in that, The end of the substrate connected to the second side plate is recessed inward to form a thinning groove.

7. The dust filter device according to claim 5, characterized in that, The second side plate includes: A connecting arm, one end of which is disposed on the substrate; and, An abutment portion is disposed at one end of the connecting arm away from the substrate. The connecting arm is located between the two opposite ends of the abutment portion. Both ends of the abutment portion are bent toward the lower cover, and both ends of the abutment portion abut against the lower cover.

8. The dust filter device according to claim 7, characterized in that, The abutment portion has a notch on the side away from the connecting arm, and the notch is located between the opposite ends of the abutment portion.

9. The dust filter device according to claim 1, characterized in that, The top cover includes: Cover plate; A positioning part is formed by protruding outward from one side surface of the cover plate. The positioning part is adapted to the positioning cavity. The second fastening structure is disposed on the end of the positioning part away from the cover plate.

10. The dust filter device according to claim 1, characterized in that, The upper cover is provided with a first dustproof structure, and the lower cover is provided with a second dustproof structure. When the first fastening structure and the second fastening structure are fastened together, the filter screen is located between the first dustproof structure and the second dustproof structure.

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