A table vacuum cleaner having a fan blade extension post

Abstract

This utility model discloses a desktop vacuum cleaner with a fan blade extension column, belonging to the technical field of desktop vacuum cleaners. Its purpose is to overcome the defect of existing desktop vacuum cleaners where hair easily gets tangled on the motor shaft. The desktop vacuum cleaner includes a fan blade and a lower housing. The lower housing has a dust inlet in the middle. The fan blade has an extension column that extends downwards to the dust inlet. A dust inlet space is formed between the extension column and the inner wall of the dust inlet. As hair enters the desktop vacuum cleaner from the dust inlet, it easily gets tangled on the extension column, reducing the possibility of hair getting tangled on the motor shaft. It also makes it easier for users to clean the hair off the extension column.

Description

Technical Field

[0001] This utility model belongs to the technical field of desktop vacuum cleaners, and relates to a desktop vacuum cleaner with a fan blade extension column. Background Technology

[0002] Chinese patent document discloses a desktop vacuum cleaner, authorized announcement number CN208211967U. The desktop vacuum cleaner includes an outer cover, a base, a motor base, a fan cover, and a base arranged from top to bottom. A fan is arranged between the motor base and the fan cover. A motor is installed on the motor base and the motor is connected to the fan drive. The bottom of the base is provided with a mounting position for embedding a brush and has a dust opening.

[0003] When vacuuming up long, thin objects like hair, the hair tends to get tangled around the motor shaft above the fan, making cleaning very inconvenient. Summary of the Invention

[0004] This utility model addresses the problems existing in the prior art by proposing a desktop vacuum cleaner with a fan blade extension column, aiming to overcome the defect of existing desktop vacuum cleaners where the motor shaft is prone to getting tangled with hair.

[0005] This utility model is implemented as follows: A desktop vacuum cleaner with a fan blade extension column includes a fan blade and a lower housing, wherein the lower housing has a dust inlet in the middle, characterized in that the fan blade has an extension column that extends downward to the dust inlet, and a dust inlet space is formed between the extension column and the inner wall of the dust inlet.

[0006] The extension column includes a first segment and a second segment connected to the lower end of the first segment, the lower end of the first segment having a blocking surface protruding relative to the sidewall of the second segment.

[0007] The lower end of the first segment is located inside the dust inlet.

[0008] The second segment is cylindrical.

[0009] The first segment is in the shape of a quadrangular prism.

[0010] The cross-section of the first segment gradually increases from bottom to top.

[0011] The side of the first segment is an arc-shaped surface with a concave center.

[0012] The bottom wall of the lower housing has an upwardly protruding convex wall in the middle, and the side wall of the dust inlet includes the convex wall.

[0013] The desktop vacuum cleaner includes a mounting base, with the lower housing snapped onto the mounting base. A motor is mounted on the mounting base and is connected to the fan blades. The mounting base has a lower cavity, with the fan blades located within the lower cavity. A filter seat is located within the lower cavity, and the filter seat includes a positioning disc and a filter ring. A filter screen is mounted on the filter ring. The positioning disc and the filter ring are connected by multiple connecting ribs, with the included angle between adjacent connecting ribs being less than or equal to 60 degrees. The filter ring abuts against the side wall of the lower cavity. The positioning disc has a central hole in its center, which is fitted onto the convex wall.

[0014] The lower end of the extension column protrudes downward from the bottom wall of the lower housing, or the lower end of the extension column is flush with the lower surface of the bottom wall of the lower housing, or the lower end of the extension column is recessed into the dust inlet.

[0015] The present invention has the following beneficial effects: hair tends to get tangled on the extension column as it enters the desktop vacuum cleaner from the dust inlet, reducing the possibility of hair getting tangled on the motor shaft, and making it easier for users to clean the hair on the extension column. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a desktop vacuum cleaner; Figure 2 A cross-sectional view of a desktop vacuum cleaner; Figure 3 This is a partial structural diagram of a desktop vacuum cleaner; Figure 4 This is a schematic diagram of the wind turbine blades.

[0017] Figure labeling: 100, fan blade; 110, extension column; 111, first section; 112, second section; 113, blocking surface; 200, lower housing; 210, dust inlet; 220, convex wall; 300, mounting base; 310, motor; 311, battery; 320, lower cavity; 400, filter base; 410, positioning plate; 420, filter ring; 430, connecting rib; 500, upper housing. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of this utility model easier to understand and master. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] This embodiment provides a desktop vacuum cleaner, such as Figure 1-4As shown, the device includes a fan blade 100 and a lower housing 200. The lower housing 200 has a dust inlet 210 in its middle. The fan blade 100 has an extension post 110 that extends downwards to the dust inlet 210. A dust inlet space exists between the extension post 110 and the inner wall of the dust inlet 210. The dust inlet space ensures that the extension post 110 does not completely block the dust inlet 210. The extension post 110 extends downwards to the dust inlet 210, and at least partially resides within the dust inlet 210. (See reference...) Figure 2 In this embodiment, the lower end of the extension column 110 protrudes downward from the bottom wall of the lower housing 200. A brush is provided on the bottom wall of the lower housing 200 (not shown in the figure), and the length of the extension column 110 protruding from the lower housing 200 does not exceed the length of the brush. In other alternative embodiments, the lower end of the extension column 110 may be flush with the lower surface of the bottom wall of the lower housing 200, or the lower end of the extension column 110 may be recessed into the dust inlet 210, meaning the lower end of the extension column 110 is higher than the lower surface of the bottom wall of the lower housing 200.

[0020] like Figure 1 , 3 As shown in Figure 4, the extension column 110 includes a first segment 111 and a second segment 112 connected to the lower end of the first segment 111. The lower end of the first segment 111 has a blocking surface 113 protruding relative to the side wall of the second segment. The second segment 112 is the main part for winding hair strands. Under the action of the blocking surface 113, the hair strands wound on the second segment 112 are not easy to move upward, so the hair strands are not easy to detach from the extension column 110 and wrap around the motor shaft.

[0021] like Figure 1 , 2 As shown, the lower end of the first segment 111 is located inside the dust inlet 210. This ensures that the hair strands are mainly located at the dust inlet 210 and will not move above the dust inlet 210. The airflow in the dust inlet 210 is mainly upward, and the airflow diffuses around the dust inlet 210. The position of the first segment 111 can reduce the impact of the diffused airflow around the hair strands, reduce the risk of hair strands detaching, and improve the hair collection effect of the extension column 110.

[0022] like Figure 1 , 4As shown, the second segment 112 is cylindrical. The first segment 111 is quadrangular prism. The cross-section of the first segment 111 gradually increases from bottom to top. The side surface of the first segment 111 is an arc-shaped surface with a concave center. Experiments have shown that this structure of the extension column 110 has a better hair collection effect and can better prevent hair from moving upward. In other optional embodiments, the second segment 112 can also be other polygonal prism shapes, and the first segment 111 can also be cylindrical, triangular prism, or a ring-shaped baffle can be provided at the lower end of the first segment 111 to block hair. The first segment 111 can also have equal diameters at the top and bottom, and the side surface of the first segment 111 can also be flat.

[0023] like Figure 1 , 2 As shown, the bottom wall of the lower housing 200 has an upwardly protruding convex wall 220 in the middle, and the side wall of the dust inlet 210 includes the convex wall 220. The dust inlet 210 formed in this way is relatively deep, which is conducive to hair strands being wrapped in the dust inlet 210 and reduces the risk of hair strands detaching from the extension post 110.

[0024] Furthermore, the desktop vacuum cleaner includes a mounting base 300, the lower housing 200 is snapped onto the mounting base 300, a motor 310 is mounted on the mounting base 300, the motor 310 is connected to the fan blade 100, the mounting base 300 has a lower cavity 320, the fan blade 100 is located in the lower cavity 320, a filter seat 400 is provided in the lower cavity 320, the filter seat 400 includes a positioning plate 410 and a filter ring 420, the filter ring 420 is provided with a filter screen, the positioning plate 410 and the filter ring 420 are connected by multiple connecting ribs 430, the included angle between adjacent connecting ribs 430 is less than or equal to 60 degrees, the filter ring 420 abuts against the side wall of the lower cavity 320, the positioning plate 410 has a central hole in the middle, the central hole is fitted onto the convex wall 220.

[0025] In this embodiment, there are eight connecting ribs 430 evenly surrounding the center line, with an included angle of 45 degrees between adjacent connecting ribs 430. In other optional embodiments, when the included angle between adjacent connecting ribs 430 is equal to 60 degrees, there can be six connecting ribs 430 evenly surrounding the center line. Compared to the original four connecting ribs 430, more connecting ribs 430 can provide better support for the filter ring 420, preventing deformation of the filter ring 420 and the formation of gaps between the filter ring 420 and the sidewall of the lower cavity 320.

[0026] The mounting base 300 is also equipped with an upper housing 500 and a battery 311 inside the upper housing 500. The battery 311 supplies power to the motor 310, and the fan blade 100 rotates to generate suction to achieve the dust collection function.

[0027] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A desktop vacuum cleaner with a fan blade extension column, comprising a fan blade (100) and a lower housing (200), wherein the lower housing (200) has a dust inlet (210) in the middle, characterized in that, The fan blade (100) has an extension column (110) that extends downward to the dust inlet (210), and there is a dust inlet space between the extension column (110) and the inner wall of the dust inlet (210).

2. The table-type suction cleaner having a blade extension column according to claim 1, wherein The extension column (110) includes a first segment (111) and a second segment (112) connected to the lower end of the first segment (111), the lower end of the first segment (111) having a blocking surface (113) protruding relative to the sidewall of the second segment.

3. A table vacuum cleaner having a wand extension column according to claim 2, wherein, The lower end of the first segment (111) is located inside the dust inlet (210).

4. The table-type suction cleaner having a blade extension column according to claim 2, wherein The second segment (112) is cylindrical.

5. The table-type suction cleaner having a blade extension column according to claim 2, wherein The first segment (111) is a quadrangular prism.

6. The table-type suction cleaner having a blade extension column according to claim 2, wherein The first segment (111) has a cross-section that gradually increases from bottom to top.

7. The table-type suction cleaner having a blade extension column according to claim 2, wherein The side of the first segment (111) is an arc-shaped surface with a concave center.

8. The table-type suction cleaner having a blade extension column according to claim 1, wherein The bottom wall of the lower housing (200) has an upwardly protruding convex wall (220) in the middle, and the side wall of the dust inlet (210) includes the convex wall (220).

9. A table vacuum cleaner having a wand extension column according to claim 8, wherein, The desktop vacuum cleaner includes a mounting base (300), a lower housing (200) is snapped onto the mounting base (300), a motor (310) is mounted on the mounting base (300), the motor (310) is connected to the fan blade (100), the mounting base (300) has a lower cavity (320), the fan blade (100) is located in the lower cavity (320), and a filter seat (400) is provided in the lower cavity (320). The device includes a positioning disk (410) and a filter ring (420). The filter ring (420) is provided with a filter screen. The positioning disk (410) and the filter ring (420) are connected by multiple connecting ribs (430). The included angle between adjacent connecting ribs (430) is less than or equal to 60 degrees. The filter ring (420) abuts against the side wall of the lower cavity (320). The positioning disk (410) has a central hole in the middle, and the central hole is fitted onto the convex wall (220).

10. The table-type suction cleaner having a blade extension column according to claim 1, wherein The lower end of the extension column (110) protrudes downward from the bottom wall of the lower housing (200), or the lower end of the extension column (110) is flush with the lower surface of the bottom wall of the lower housing (200), or the lower end of the extension column (110) is recessed into the dust inlet.

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