Dust removal device

Abstract

The embodiment of the utility model relates to the technical field of cleaning appliances, and particularly discloses a dust removal device which comprises a shell, a filtering part, a brush accessory, a brush driving part and an air pressure providing part, a containing space is formed in the shell, and an air inlet is formed in the end, penetrating through the shell, of the containing space; the filter part is arranged in the accommodating space, divides the accommodating space into a dust collection cavity and an accommodating cavity, and is used for filtering garbage in the airflow; the brush accessory is partially accommodated in the dust collection cavity and comprises a base part and bristles fixed on the base part, and at least part of the bristles extend out of the air inlet; the brush driving piece is contained in the dust collecting cavity, the base part is connected with the brush driving piece, and the brush driving piece is used for driving the brush accessory to rotate; the air pressure providing piece is contained in the containing cavity and used for driving the airflow to flow so that garbage on the outer side of the air inlet can be sucked into the dust collecting cavity. The brush driving part drives the brush accessory to rotate, so that garbage attached to the to-be-cleaned surface is swept off, and powerful cleaning is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning appliances, and in particular to a dust removal device. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, vacuum cleaners, as a household cleaning appliance, have become increasingly common in homes. A vacuum cleaner typically uses a motor to drive an impeller to rotate at high speed, creating negative pressure within a sealed housing. This draws dirt, debris, and other contaminants into the air. The air then separates the contaminants from the air, retaining them in a designated location, while clean air is expelled from the cleaner.

[0003] However, during the implementation of the present application, the inventors of the present application found that some dirt would adhere to the surface to be cleaned and would not be easily sucked away, resulting in low cleaning intensity. Utility Model Content

[0004] The purpose of this application is to provide a dust removal device provided with a brush accessory, which drives the brush accessory to rotate through a brush driving member, thereby sweeping off the garbage attached to the surface to be cleaned, thereby achieving powerful cleaning.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a dust removal device, including a shell, a filter, a brush accessory, a brush driving member and a wind pressure providing member, the shell is provided with a accommodating space, the accommodating space passes through one end of the shell to form an air inlet; the filter is arranged in the accommodating space, and the filter divides the accommodating space into a dust collecting chamber and a receiving chamber, and the filter is used to filter garbage in the airflow; the brush accessory is partially accommodated in the dust collecting chamber, the brush accessory includes a base and bristles fixed on the base, and the bristles at least partially extend out of the air inlet; the brush driving member is accommodated in the dust collecting chamber, the base is connected to the brush driving member, and the brush driving member is used to drive the brush accessory to rotate; the wind pressure providing member is accommodated in the receiving chamber, and the wind pressure providing member is used to drive the airflow to flow so that the garbage outside the air inlet is sucked into the dust collecting chamber.

[0006] Optionally, the dust removal device also includes an installation unit, which is used to fix the brush drive component to the shell, and the installation unit includes: an enclosure, which is used to accommodate the brush drive component; an installation cover, the enclosure is provided with an opening, and the installation cover can be detachably installed on the enclosure to seal the opening; and a connecting body, which respectively connects the enclosure and the shell, and / or the connecting body respectively connects the installation cover and the shell.

[0007] Optionally, the dust removal device also includes a power supply, which is accommodated in the accommodating cavity, and the power supply is used to power the brush drive and the wind pressure providing component; the outer shell includes a first shell unit and a second shell unit that can be detachably connected, and the dust removal device also includes an electrical connector, which is arranged at the connection between the first shell unit and the second shell unit, wherein when the first shell unit and the second shell unit are connected, the electrical connector is electrically connected to the brush drive and the power supply respectively; when the first shell unit and the second shell unit are disassembled, the electrical connector and the brush drive are disconnected electrically, and / or the electrical connector and the power supply are disconnected electrically.

[0008] Optionally, the dust removal device also includes a dust shield, the dust collecting chamber is provided with an air inlet channel near the air inlet, and the dust shield is provided on the outer shell and located in the air inlet channel; when the wind pressure providing component stops, the dust shield at least partially covers the air inlet channel; when the wind pressure providing component is working, the dust shield moves to increase the air flow area of ​​the air inlet channel.

[0009] Optionally, the dust removal device includes a fixing unit, which is used to fix the dust shield to the shell. The fixing unit includes: a fixing part, to which the dust shield is fixed; and a connecting part, which respectively connects the fixing part and the shell.

[0010] Optionally, the dust shield is a flexible thin sheet.

[0011] Optionally, the dust shield is provided with a stroke expansion portion, and the stroke expansion portion is used to expand the movement range of the dust shield.

[0012] Optionally, the filter element is a high-efficiency air filter, and the filter element is a rotating body with a rotating surface being a right-angled trapezoid.

[0013] Optionally, the dust removal device further includes a circuit board and wires, and the circuit board and / or the wires at least partially protrude from the housing.

[0014] Optionally, the housing is provided with an air outlet, which is used to discharge filtered air; the housing is also provided with an air guide portion, which is used to guide the airflow to the air outlet.

[0015] The beneficial effect of the embodiment of the present application is: different from the prior art, the dust removal device of the embodiment of the present application is provided with a brush accessory, which is driven to rotate by a brush driving member, thereby sweeping off the garbage attached to the surface to be cleaned, thereby achieving powerful cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 This is an overall schematic diagram of a dust removal device according to a specific embodiment of the present application;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross section of the dust removal device along AA;

[0019] Figure 3 This is an exploded schematic diagram of a dust removal device according to a specific embodiment of the present application;

[0020] Figure 4 This is an overall schematic diagram of a brush accessory according to a specific embodiment of the present application;

[0021] Figure 5 This is an overall schematic diagram of a housing according to a specific embodiment of the present application;

[0022] Figure 6 for Figure 5 Schematic diagram of the cross section of the middle shell along BB;

[0023] Figure 7 This is an overall schematic diagram of a dust shield according to a specific embodiment of the present application;

[0024] Figure 8 for Figure 6 Enlarged view of point C in the figure.

[0025] Description of the drawings: 1. Dust removal device; 100. Housing; 110. Accommodation space; 111. Air inlet; 112. Dust collection chamber; 113. Accommodation chamber; 114. Air inlet channel; 120. First housing unit; 121. First front housing portion; 122. First rear housing portion; 130. Second housing unit; 131. Second front housing portion; 131a. Air outlet; 131b. Air guide portion; 131c. Mounting slot; 132. Second rear housing portion; 200. Filter element; 300. Brush accessory; 310. Base portion; 311. Enclosure; 312. Position limiting portion; 320, bristles; 400, brush drive member; 500, wind pressure providing member; 600, mounting unit; 610, enclosure; 612, opening; 611, mounting port; 620, mounting cover; 630, connector; 11, air guide member; 11a, air guide groove; 12, shock absorber; 12a, bump; 12, power supply; 13, electrical connector; 14, circuit board; 15, wire; 700, dust shield; 710, stroke expansion unit; 701, fixed end; 702, movable end; 800, fixing unit; 810, fixing member; 820, connector. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more elements can be interposed therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more elements can be interposed therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art in the technical field of this utility model. The terms used in this specification and in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0028] A dust removal device 1, see Figures 1 to 4 , Figure 2 The arrow in the figure indicates the direction of gas flow. The dust removal device 1 includes a housing 100, a filter element 200, a brush assembly 300, a brush driver 400, and a wind pressure providing element 500. The housing 100 defines a receiving space 110, which extends through one end of the housing 100 and forms an air inlet 111. The filter element 200 is disposed within the receiving space 110 and separates the receiving space 110 into a dust collection chamber 112 and a receiving chamber 113. The filter element 200 is used to filter debris from the airflow. The brush assembly 300 is partially housed in the dust collection chamber 112. The brush assembly 300 includes a base 310 and bristles 320 fixed to the base 310, with the bristles 320 at least partially extending out of the air inlet 111. The brush driver 400 is housed in the dust collection chamber 112. The base 310 is connected to the brush driver 400, and the brush driver 400 is used to drive the brush assembly 300 to rotate. The wind pressure providing member 500 is housed in the receiving chamber 113 and is used to drive the air flow so that the garbage outside the air inlet 111 is sucked into the dust collecting chamber 112. The present application is provided with a brush accessory 300, which is driven by the brush driving member 400 to rotate, thereby sweeping away the garbage attached to the surface to be cleaned, thereby achieving strong cleaning.

[0029] For the above-mentioned housing 100, see Figure 5 and Figure 6The housing 100 is cylindrical in shape as a whole, and the accommodating space 110 is also cylindrical in shape. Specifically, the housing 100 includes a first housing unit 120 and a second housing unit 130. The first housing unit 120 and the second housing unit 130 are distributed along the axial direction. The dust collecting chamber 112 is located in the first housing unit 120. The air inlet 111 is located on the side of the first housing unit 120 away from the second housing unit 130. The accommodating chamber 113 is located in the second housing unit 130. The first housing unit 120 and the second housing unit 130 are detachably connected by plugging into each other, so that the dust collecting chamber 112 can be opened and closed, so that the user can clean the garbage in the dust collecting chamber 112. It should be noted that the present application does not limit the specific connection method between the first housing unit 120 and the second housing unit 130. In other embodiments of the present application, the first housing unit 120 and the second housing unit 130 can be detachably connected by designing threads, or by other methods such as magnetic attraction or snap fasteners to achieve detachable connection between the first housing unit 120 and the second housing unit 130. It should also be understood that in the present application, the shell is set to be cylindrical to facilitate the user's grip, but the present application does not limit the specific shape of the shell. In other embodiments of the present application, the shell can also be other shapes such as a prism, a frustum or a truncated cone.

[0030] For the filter element 200, see Figures 1 to 3The filter element 200 is a high-efficiency air filter, and the filter element 200 is a rotating body with a rotating surface of a right-angled trapezoid. The filter element 200 is embedded in the side of the first shell unit 120 close to the second shell unit 130, and the small end of the right-angled trapezoid is arranged close to the air inlet 111 to increase the contact area between the filter element 200 and the air to be filtered, thereby enhancing the filtering effect. It should be noted that the present application does not limit the specific type and shape of the filter. In other embodiments of the present application, the filter element 200 can be made of other materials such as cotton cloth, sponge or filter bag to achieve the filtering effect. The filter element 200 can also be designed to be flat or cylindrical. In the present application, a filter with a rotating surface of a right-angled trapezoid is directly provided. In other embodiments of the present application, multiple filters can also be designed to enhance the filtering effect, such as two flat filters arranged at intervals along the flow direction of the gas. It should also be noted that the present application does not limit the installation method and installation position of the filter element 200 on the shell. In the embodiment provided in the present application, in order to prevent the garbage in the dust collecting chamber 112 from being accidentally touched and leaked when the first shell unit 120 and the second shell unit 130 are separated, the filter element 200 is designed on the first shell unit 120 to shield the dust collecting chamber 112, so that after the first shell unit 120 is disassembled, the filter element 200 needs to be removed to dump the garbage, and the embedded design of the filter element 200 makes the installation and disassembly of the filter element 200 more convenient. However, in other embodiments of the present application, the filter element 200 can be designed to be installed on the second shell unit 130, so that when the first shell unit 120 and the second shell unit 130 are separated, the dust collecting chamber 112 can be directly exposed to facilitate the dumping of garbage, and the filter element 200 can be installed on the first shell unit 120 or the second shell unit 130 by other methods such as snap, magnetic or threaded connection to achieve fixed installation of the filter element 200.

[0031] For the brush accessory 300, see Figure 4 , and combined with Figures 1 to 3The brush accessory 300 is partially housed in the dust collection chamber 112. The brush accessory 300 includes a base 310 and bristles 320 fixed to the base 310. The bristles 320 at least partially extend out of the air inlet 111. Specifically, the side of the base 310 facing away from the bristles 320 is cylindrical and is sleeved on the output shaft of the brush driver 400 to transmit the power of the brush driver 400 to the bristles 320. A circular enclosure 311 is provided on the side of the base 310 to which the bristles 320 are fixed. The height of the enclosure 311 is lower than the length of the bristles 320. The enclosure 311 can prevent the bristles 320 from excessively spreading and swinging under external forces, thereby providing a certain degree of protection for the bristles 320. There are multiple bristles 320, and the multiple bristles 320 are distributed in a circular array on the base 310 in the form of groups. There is a certain gap between each group of bristles 320 to facilitate the removal of cleaned garbage from between the bristles 320. It should be noted that the present application does not limit the specific structure and shape of the brush accessory 300. In other embodiments of the present application, the base 310 may not be provided with a barrier 311, and the bristles 320 may not be arranged in groups, so that the brush accessory 300 can achieve rotational cleaning.

[0032] Preferably, the base 310 is detachably mounted on the output shaft of the brush drive 400. When the user does not need to use the brush function, the user can remove the brush accessory 300 and directly use the vacuum function, and can be used in conjunction with the cleaning surface. In addition, different brush accessories 300 can be designed for users to replace and use. On the one hand, it can be used to replace worn brush accessories 300. On the other hand, brush accessories 300 of different sizes and different hardness of bristles 320 can be configured to meet the different needs of users, thereby improving the user experience.

[0033] For the brush drive 400, please refer to Figure 2 , and combined with Figure 3The brush drive 400 is a DC motor. The side of the base 310 facing away from the bristles 320 is cylindrical and is sleeved on the output shaft of the brush drive 400. The dust removal device 1 also includes an installation unit 600, which is accommodated in the dust collecting chamber 112. The installation unit 600 is used to fix the brush drive 400 to the housing 100. Specifically, the first shell unit 120 includes a first front shell portion 121 and a first rear shell portion 122. The first front shell portion 121 and the first rear shell portion 122 can be detachably installed by plugging. The installation unit 600 includes an enclosure 610, an installation cover 620 and a connector 630. The enclosure 610 is a circular cylindrical structure. The brush drive member 400 is accommodated in the enclosure 610. The enclosure 610 and the first shell unit 120 are coaxially arranged. An installation port 611 is provided at one end of the enclosure 610 along the axial direction. The brush drive member 400 partially extends out of the installation port 611 and is connected to the base 310. The enclosure An opening 612 is provided at one end of 610 axially away from the installation opening 611, and the brush drive component 400 is installed into the enclosure 610 through the opening 612. The installation cover 620 is snap-fitted and installed on the enclosure 610 to block the opening 612 to prevent the brush drive component 400 from sliding out of the enclosure 610 from the opening 612. The connecting body 630 radially connects the enclosure 610 and the outer shell 100 respectively, so that the enclosure 610 is fixedly connected to the first shell unit 120 and is located in the middle of the dust collecting chamber 112. The number of the connecting bodies 630 is 3, and the 3 connecting bodies 630 are distributed radially on the outside of the enclosure 610. Among them, the axial direction refers to the overall flow direction of the airflow, and the radial direction is the direction perpendicular to the axial direction. In the present application, the shell 100 is cylindrical as a whole, so the axial direction is the height direction of the cylindrical shell, and the radial direction is the diameter direction of the shell. In other embodiments of the present application, if the shell 100 is not cylindrical and the overall flow direction of the airflow has a large bend, then the axial direction is the main flow direction of the gas in this section of the shell, and the radial direction is the direction perpendicular to the axial direction. It should be noted that the present application does not limit the specific structure, specific shape and installation position of the installation unit 600. For example, in other embodiments of the present application, the connector 630 can be connected to the installation cover 620 and the shell 100 respectively, or the connector 630 can be connected to both the installation cover 620 and the shell 100 and the enclosing body 610 and the shell 100, so that the installation unit 600 can realize the installation of the brush drive 400 on the shell 100. It should be understood that in the embodiment of the present application, the first shell unit 120 is split into a first front shell portion 121 and a first rear shell portion 122 in order to facilitate the installation of the brush drive 400 and reduce the difficulty of the structural design of the first shell unit 120, thereby reducing costs. However, the present application is not limited to this. In other embodiments of the present application, the first shell unit 120 can be an integrally molded part so that the brush drive 400 can be installed and fixed.

[0034] For details about the wind pressure providing member 500, please refer to Figure 2 and Figure 3 , the wind pressure providing member 500 is a fan blade and a motor, and the motor drives the fan blade to rotate to generate wind pressure and make the gas flow. The wind pressure providing member 500 is accommodated in the accommodating chamber 113 and fixedly installed on the second shell unit 130. The dust removal device 1 also includes an air guide 11. The air guide 11 is in the shape of a circular column as a whole. The air guide 11 is provided with a truncated cone-shaped air guide groove 11a on the side facing the wind pressure providing member 500. The air guide 11 is used to guide the airflow to the wind pressure providing member 500, thereby reducing power loss. Specifically, the air guide 11 is directly inserted and installed between the first shell unit 120 and the second shell unit 130 to form a part of the shell 100, thereby simplifying the installation steps and reducing production costs. It should be understood that the present application does not limit the specific type and structure of the wind pressure providing member 500. In other embodiments of the present application, the wind pressure providing member 500 can be replaced by fans or other power equipment of different specifications and models to achieve driving gas flow. It should be noted that the present application does not limit the specific structure and installation method of the air guide 11. In other embodiments of the present application, the air guide 11 may be in other geometric columnar or conical shapes, etc., and the air guide 11 may be fixed to the outer shell 100 in other detachable connection methods. The air guide 11 may be housed inside the outer shell 100. On the other hand, the air guide 11 may be integrally formed with the outer shell 100. In addition, in some embodiments, the air guide 11 may not be provided if there is no concern about the loss of wind speed.

[0035] Preferably, the dust removal device 1 further includes a shock absorber (not shown), which is an annular sleeve made of silicone material. The shock absorber is mounted on the outside of the wind pressure providing member 500, and the outer wall of the shock absorber is provided with a plurality of protrusions (not shown), which are distributed in an array on the shock absorber. It should be noted that this application does not limit the specific structure of the shock absorber. In other embodiments of this application, the shock absorber can also be an elastic member or a sponge.

[0036] Furthermore, the dust removal device 1 also includes a power supply 12 and an electrical connector 13, see Figure 2 and Figure 3The power supply 12 is housed in the receiving chamber 113. The power supply 12 is used to supply power to the brush drive 400 and the wind pressure providing member 500. The electrical connector 13 is provided at the connection between the first shell unit 120 and the second shell unit 130. When the first shell unit 120 and the second shell unit 130 are connected, the electrical connector 13 is electrically connected to the brush drive 400 and the power supply 12 respectively. When the first shell unit 120 and the second shell unit 130 are disassembled, the electrical connector 13 and the brush drive 400 are electrically disconnected. Specifically, the second shell unit 130 includes a second front shell portion 131 and a second rear shell portion 132 connected by a snap connection. The second front shell portion 131 is cylindrical, and the second rear shell portion 132 is a plate cover structure. The second front shell portion 131 and the second rear shell portion 132 enclose the receiving chamber 113. The electrical connector 13 is provided at the connection between the first rear shell portion 122 and the second front shell portion 131. It should be noted that in other embodiments of the present application, when the first shell unit 120 and the second shell unit 130 are disassembled, the electrical connector 13 can be electrically disconnected from the power supply 12, or the power supply 12 can be electrically disconnected from the power supply 12 and the brush drive 400 at the same time, so that the brush drive 400 and the power supply 12 can be detachably electrically connected.

[0037] Furthermore, the second front shell portion 131 is provided with an air outlet 131a, which is in the shape of a rectangular hole. There are multiple air outlets 131a, and the multiple air outlets 131a are distributed in a radial circumferential array on the second front shell portion 131. The air outlet 131a is used to discharge filtered air. The second front shell portion 131 is also provided with an air guide portion 131b, which is 7 in number. The 7 air guide portions 131b are centered on the wind pressure providing member 500 and are arranged in a circumferential array on the second front shell portion 131. The air guide portion 131b and the second front shell portion 131 are integrally formed. The air guide portion 131b is used to guide the airflow to the air outlet 131a. It should be noted that this application does not limit the specific number, shape, and distribution position of the air outlet 131a and the air guide portion 131b, so long as the airflow can be guided and discharged. It should be understood that in the embodiment of the present application, in order to reduce the number of parts and reduce the installation steps, the air guide portion 131b and the second front shell portion 131 are integrally formed, but the present application is not limited to this. In other embodiments of the present application, the air guide portion 131b and the second front shell portion 131 can be separated, and the air guide portion 131b is installed and fixed on the second front shell portion 131.

[0038] Preferably, the dust removal device 1 further includes a circuit board 14 and wires 15. A mounting groove 131c is provided at a radial end of the second front shell portion 131. The circuit board 14 and wires 15 are received and fixed within the receiving cavity 113, and the circuit board 14 and wires 15 partially extend out of the second front shell portion 131 from the mounting groove 131c, so that the circuit board 14 and / or wires 15 at least partially protrude from the housing 100. Because the power supply 12 in this embodiment of the application is cylindrical, the second housing unit 130 is adapted to the shape of the power supply 12. The arrangement of the circuit board 14 and / or wires 15 at least partially protruding from the housing 100 can optimize the utilization of the accommodation space 110, thereby reducing the volume of the housing 100, making the dust removal device 1 of the present application more compact and portable.

[0039] Furthermore, a USB Type-C interface is provided on the circuit board 14, and the USB Type-C interface is partially exposed on the second rear shell portion 132. The user can charge the dust removal device 1 through the Type-C charging cable 15. It should be noted that the present application does not limit the type of charging interface. In other embodiments of the present application, the charging interface can also be a Micro USB interface or a Lightning interface, or can be designed as a special-shaped interface or wireless charging. In the present application, the USB Type-C interface is provided on the second rear shell portion 132 to prevent the user from touching the interface when holding the dust removal device 1, but the present application does not limit the specific position of the USB Type-C interface. In other embodiments of the present application, the USB Type-C interface can also be designed on the second front shell portion 131 or on the first shell unit 120.

[0040] Preferably, in order to prevent the garbage collected in the dust collecting chamber 112 from leaking out from the air inlet 111, the dust removal device 1 further includes a dust shield 700, see Figure 7 and Figure 8 , and combined with Figure 2The dust collecting chamber 112 is provided with an air inlet channel 114 near the air inlet 111, and the dust shield 700 is provided on the first front shell portion 121 and is located in the air inlet channel 114. The dust shield 700 is a circular flexible thin sheet. The dust removal device 1 includes a fixing unit 800, and the fixing unit 800 is used to fix the dust shield 700 to the first front shell portion 121. Specifically, the fixing unit 800 includes a fixing part 810 and a connecting part 820. The fixing part 810 is an annular sleeve structure, and the base 310 is arranged through the fixing part 810. The dust shield 700 has a relative fixed end 701 and a movable end 702. The fixed end 701 is bonded to the fixing part 810 on the side axially away from the air inlet 111, and the movable end 702 will be displaced to change the degree of blocking of the front air duct, and the connecting part 820 is radially connected to the fixing part 810 and the first front shell portion 121 respectively. When the wind pressure providing member 500 stops, the dust shield 700 at least partially blocks the air inlet channel 114. When the wind pressure providing member 500 is working, the dust shield 700 moves to increase the air flow area of ​​the air inlet channel 114. As a result, the air inlet 111 can normally inhale garbage when the dust removal device 1 is operating, and the air inlet 111 can be closed when the dust removal device 1 stops to prevent garbage from leaking out, thereby facilitating user operation and improving user experience. It should be noted that in the embodiment of the present application, in order to simplify the structure and reduce costs, the dust shield 700 is a flexible thin sheet. The dust shield 700 uses its own elasticity to shield and open the air inlet channel 114, but the present application does not limit this. In other embodiments of the present application, the dust shield 700 can also be fixed to the fixing member 810 by a rotating shaft through a hard plate structure, and shielding and opening the air inlet channel 114 is achieved by providing an elastic member. It should also be noted that the present application does not limit the specific structure of the fixing unit 800 , so that the dust shield 700 can be installed on the first front shell portion 121 .

[0041] Preferably, the dust shield 700 is provided with a stroke expansion portion 710, which is used to expand the range of motion of the dust shield 700. Specifically, the stroke expansion portion 710 is a hollow groove. The hollow groove design can reduce the cross-sectional area of ​​the dust shield 700, thereby facilitating deformation of the dust shield 700 when subjected to wind pressure. It should be noted that this application does not limit the specific structure of the stroke expansion portion 710. In some embodiments of this application, the stroke expansion portion 710 can also have a pleated structure.

[0042] Furthermore, the dust shield 700 is designed as two semicircular thin sheet structures, thereby further enhancing the deformation effect.

[0043] Furthermore, the base 310 is provided with a limiting portion 312 on one side axially close to the air inlet 111. The limiting portion 312 is used to limit the movement stroke of the brush accessory 300 to prevent the user from applying excessive force when installing the brush accessory 300 and damaging the brush drive 400.

[0044] Preferably, the outer contour of one side of the first front shell portion 121 close to the air inlet 111 is contracted so that the cross-sectional area of ​​the air inlet 111 is smaller than the cross-sectional area of ​​the dust collecting chamber 112, thereby increasing the wind pressure at the air inlet 111 when the wind force of the wind pressure providing component 500 is constant, thereby facilitating the collection of garbage.

[0045] Preferably, in some embodiments of the present application, the dust shield 700 is arranged at an acute angle to the gas flow direction of the air inlet channel 114, and in the gas flow direction of the air inlet channel 114, the fixed end 701 is located upstream of the movable end 702, thereby increasing the cross-sectional area of ​​the dust shield 700 and thereby increasing the elastic effect.

[0046] Preferably, in some embodiments of the present application, the plurality of bristles 320 are arranged to be tilted outward away from the center, so that the bristles 320 are distributed radially outward on the base 310, thereby increasing the cleaning area of ​​the bristles 320 and improving the cleaning efficiency.

[0047] Preferably, in some embodiments of the present application, the end face of the first front shell portion 121 on which the air inlet 111 is opened is set at an acute angle to the air intake direction at the air inlet 111. The setting of the acute angle can obtain a cross-section with a larger area than the cross-section of the air inlet 111 with a smaller cross-section of the air inlet 111, so that the brush accessory 300 can have a larger area to absorb flat garbage when it is disassembled.

[0048] The dust removal device 1 of the embodiment of the present application is equipped with a brush accessory 300, which is driven to rotate by a brush driving member 400, thereby sweeping off the garbage attached to the surface to be cleaned, thereby achieving powerful cleaning. The user does not need to use an additional brush head to clean the surface to be cleaned, which is simpler, more convenient and more efficient to use.

[0049] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of this application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations on the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. In addition, the above-mentioned technical features are further combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of the present invention; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A dust removal device, characterized in that: include: A housing having a receiving space therein, wherein the receiving space penetrates one end of the housing to form an air inlet; A filter element, the filter element is arranged in the accommodation space, and the filter element divides the accommodation space into a dust collecting chamber and a receiving chamber, and the filter element is used to filter garbage in the airflow; A brush accessory, wherein the brush accessory is partially accommodated in the dust collecting chamber, the brush accessory comprises a base and bristles fixed on the base, and the bristles at least partially extend out of the air inlet; A brush driving member, the brush driving member is accommodated in the dust collecting chamber, the base is connected to the brush driving member, and the brush driving member is used to drive the brush accessory to rotate; as well as A wind pressure providing member, the wind pressure providing member is received in the receiving chamber, and the wind pressure providing member is used to drive the air flow so that the garbage outside the air inlet is sucked into the dust collecting chamber; An air guide member is disposed in the receiving cavity and is used for guiding the airflow to the wind pressure providing member.

2. The dust removal device according to claim 1, characterized in that: The dust removal device further includes a mounting unit, which is used to fix the brush drive member to the housing, and the mounting unit includes: An enclosure, the enclosure being used to accommodate the brush driving member; An installation cover, the enclosure is provided with an opening, and the installation cover can be detachably installed on the enclosure to block the opening; and A connector, the connector respectively connects the containing body and the shell, and / or the connector respectively connects the mounting cover and the shell.

3. The dust removal device according to claim 1, characterized in that: The dust removal device further includes a power supply, which is accommodated in the accommodation chamber and is used to supply power to the brush driving component and the wind pressure providing component; The housing includes a first housing unit and a second housing unit that are detachably connected, and the dust removal device also includes an electrical connector, which is provided at the connection between the first housing unit and the second housing unit, wherein: When the first housing unit and the second housing unit are connected, the electrical connection member is electrically connected to the brush driving member and the power source respectively; When the first housing unit and the second housing unit are disassembled, the electrical connection between the electrical connector and the brush driving component is disconnected, and / or the electrical connection between the electrical connector and the power source is disconnected.

4. The dust removal device according to claim 1, characterized in that: The dust removal device further comprises a dust shield, the dust collecting chamber is provided with an air inlet passage near the air inlet, and the dust shield is provided on the housing and located in the air inlet passage; When the wind pressure providing member stops, the dust shield at least partially shields the air inlet passage; When the wind pressure providing member is working, the dust shield moves to increase the air flow area of ​​the air inlet channel.

5. The dust removal device according to claim 4, characterized in that: The dust removal device includes a fixing unit, which is used to fix the dust shield to the housing, and the fixing unit includes: A fixing member, the dust shield is fixed to the fixing member; A connecting piece is used to connect the fixing piece and the shell respectively.

6. The dust removal device according to claim 5, characterized in that: The dust-blocking sheet is a flexible thin sheet.

7. The dust removal device according to claim 6, characterized in that: The dust shield is provided with a stroke enlarging portion, and the stroke enlarging portion is used to enlarge the movement range of the dust shield.

8. The dust removal device according to any one of claims 1 to 7, characterized in that: The filter element is a high-efficiency air filter, and the filter element is a rotating body with a rotating surface in a right-angle trapezoid.

9. The dust removal device according to claim 8, characterized in that: The dust removal device further comprises a circuit board and electric wires, wherein the circuit board and / or the electric wires are at least partially protruded from the housing.

10. The dust removal device according to claim 8, characterized in that: The housing is provided with an air outlet, and the air outlet is used to discharge the filtered air; The housing is also provided with an air guide portion, and the air guide portion is used to guide the airflow to the air outlet.

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