Patent Description:
With the improvement of people's living standards and the rapid development of intelligent equipment technology, intelligent cleaning equipment such as sweeping robots, dusters, vacuum cleaners, etc. are widely welcomed. The Internet of Things technology makes everything connected, and makes the market for intelligent cleaning equipment even broader. The cleaning efficiency and effectiveness of the current smart cleaning equipment needs to be improved.

In <CIT>, a sweeping and vacuum cleaning robot is disclosed which has a dust suction port arranged at an air inlet end at a front part of a dust collection box. <CIT> pertains to a dust receptacle comprises a receptacle body having an air inlet and an air outlet, and detachably mounted in a dust collecting chamber of a robot cleaner, a cover fit in the receptacle body to open and close the air outlet, and a dust outlet formed in the receptacle body. In <CIT>, a mobile cleaning robot is disclosed which has a chassis enabling evacuation of the bin through a bottom of the robot.

The technical problem solved by the current application is to provide a dust box assembly, which can effectively improve the cleaning efficiency and effectiveness.

A dust box assembly according to claim <NUM> is provided.

In an example, a dust box may be provided with a holding cavity, a dust suction port and at least two air outlets, the dust suction port is connected to the holding cavity, and at least two air outlets are connected to the holding cavity. Each air outlet is connected to a fan, so that the fan extracts air through the air outlet, thus forming an airflow through the dust suction port, the holding cavity and the air outlet in turn.

In another example, a cleaning device including a device body and the above mentioned dust box assembly may be provided in the device body.

Compared with the prior art, the beneficial effect of the present application is: by setting at least two fans corresponding to at least two air outlets, each fan connects to the air outlet for air extraction and forms two air ducts inside the dust box, so that two air streams can work together to enhance the suction power, thus the air in the holding cavity can be removed more quickly, and the suction port can generate a stronger suction to suck in garbage. Compared to cleaning device with a single fan and a single duct, this embodiment can suck in debris with larger size, garbage with heavier mass, and can effectively improve the cleaning effect of cleaning device.

The technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application, and it is clear that the embodiments described are only some of the embodiments of this application and not all of them. Based on the embodiments of this application described in this application, all other embodiments obtained by a person skilled in the art without creative labor shall fall within the scope of protection of this application.

The inventors discovered after a long period of research that cleaning devices such as vacuum cleaners or floor sweepers rely on negative pressure to suck up debris, garbage, dust, etc. To obtain stronger negative pressure and suction, the most common practice in the industry is to increase the volume of the fan or the fan speed, but increasing volume will significantly increase noise, and increasing the fan speed will decrease the life of the fan, while the obtained suction is very limited. To solve the above problems, the inventor provides following embodiments after a long period of research and development and testing.

Referring to <FIG>, the dust box assembly <NUM> depicted in an embodiment of the present application includes dust box <NUM>, fan <NUM>, etc..

Referring to <FIG>, the dust box <NUM> could be used to hold trash, such as debris and dust that are being sucked up. The dust box <NUM> has a holding cavity <NUM>, sucked trash such as debris and dust are hold in the holding cavity. The dust box <NUM> also has a dust suction port <NUM> that connected to the holding cavity <NUM>. The trash sucked by the holding cavity <NUM> through the dust suction port <NUM>. The dust box <NUM> has at least two air outlets <NUM>, the two air outlets <NUM> connected to the holding cavity <NUM>. After the garbage enters the holding cavity <NUM> with air through the dust suction port <NUM>, the air then flows out through the outlet port <NUM>. In this way, with the function of the fan <NUM>, the dust suction port <NUM>, the holding cavity <NUM>, and the air outlet <NUM> form a channel through which the air flows. The dust box <NUM> is also configured with at least two interspaced connecting holes <NUM>, and the holding cavity <NUM> is connected to the air outlets <NUM> through the two connecting holes <NUM>.

The number of fans <NUM> is at least one, corresponding to at least one air outlet <NUM>. That is, the two fans <NUM> located at the two air outlets <NUM> correspondingly, fans <NUM> and air outlets <NUM> are correspond one by one. The fans <NUM> are used to extract air through the outlets <NUM>, while creating airflow between the dust suction ports <NUM> to the outlets <NUM>. The location and specific structure of the fans <NUM> and outlets <NUM> are not limited to the examples presented in <FIG>.

As shown in <FIG>, to make the fans <NUM> and the outlets <NUM> fit better, facilitate their connection, and better adapt to the structure of the dust box <NUM>, the dust box assembly <NUM> further includes connectors <NUM>. The number of connectors <NUM> is at least two. The fans <NUM>, connectors <NUM> and air outlets <NUM> correspond to each other one by one. The fan <NUM> is connected to the corresponding connector <NUM>, and is connected to the corresponding air outlet <NUM> through the corresponding connector <NUM>. The fan <NUM> is connected to the corresponding air outlet <NUM> through the corresponding connector <NUM>, i.e., it is possible to extract air from the air outlet <NUM> inside the holding cavity <NUM> through the connector <NUM>. A connector <NUM> and a fan <NUM> can be used as a set of dust suction assembly <NUM>. The dust box assembly <NUM> of this embodiment can be provided with a plurality of air outlets <NUM> and a plurality of dust suction assembly <NUM> correspondingly.

By setting at least two fans <NUM> corresponding to at least two air outlets <NUM>, each fan <NUM> connects to the air outlet <NUM> for air extraction and forms two air ducts inside the dust box <NUM>, so that two air streams can work together to enhance the suction power, thus the air in the holding cavity <NUM> can be removed more quickly, and the suction port <NUM> can generate a stronger suction to suck in garbage. Compared to cleaning device with a single fan and a single duct, this embodiment can suck in debris with larger size, garbage with heavier mass, and can effectively improve the cleaning effect of cleaning device.

Further, connectors <NUM> are set with the fans <NUM> to connect the air outlets <NUM> to facilitate the installation of the fans <NUM> and the structural arrangement and design of the whole assembly. The connectors <NUM> can extend the length of the air ducts, which can make the airflow speed faster and can further enhance the suction power and cleaning effect of the dust suction port <NUM>.

Referring to <FIG> and <FIG>, the dust box <NUM> is further configured with an access cavity <NUM>. The access cavity <NUM> and the holding cavity <NUM> are provided adjacent to each other in the thickness direction of the dust box <NUM>, and the access cavity <NUM> is connected to the holding cavity <NUM>. The access cavity <NUM> is connected to the air outlets <NUM>. Therein, the access cavity <NUM> is located downstream of the airflow compared to the holding cavity <NUM> under the suction of the fan <NUM>. In other words, when the fan <NUM> performs suction, air enters the holding cavity <NUM> from the dust suction port <NUM>, then enters the access cavity <NUM> from the holding cavity <NUM>, and is finally discharged through the connector <NUM> and the fan <NUM>, which is located downstream of the holding cavity <NUM> in the direction of airflow.

By providing the access cavity <NUM> connected to the air outlet <NUM>, the circulable space in the dust box <NUM> is increased. Further, it facilitates the arrangement and design of multiple air outlets <NUM>, which in turn facilitates the setting of multiple fans <NUM> and connectors <NUM>, which in turn form multiple air ducts. The fans <NUM> do not directly pump the air in the holding cavity <NUM>, but through the access cavity <NUM>, which is more conducive to the holding cavity <NUM> for waste deposition, further enhancing the suction power of air and cleaning effect.

As shown in <FIG> and <FIG>, when the number of air outlets <NUM> is two, for example, the two air outlets <NUM> forms in two opposite sides of the dust box <NUM>. For example, the two air outlets <NUM> are arranged in a direction perpendicular to the thickness direction of the dust box <NUM> and is aligned substantially with the length direction of the dust suction port <NUM>. The dust suction port <NUM> is spaced apart from the two air outlets <NUM>. The dust suction port <NUM> located between the two air outlets <NUM> and not on the same side as the two air outlets <NUM>. The suction port <NUM> and the two air outlets <NUM>, respectively, is around the thickness direction of the dust box <NUM>.

By setting two air outlets <NUM> located on the opposite sides of the dust box <NUM>, the dust suction port <NUM> is located between the two air outlets <NUM>, thus the air duct formed inside the dust box <NUM> is more balanced, and the effective synergy between the two fans <NUM> is ensured, while the noise generated by the airflow is reduced.

Referring to <FIG>, an embodiment of a first exemplary structure of the dust box <NUM> is described below.

The dust box <NUM> may include a first housing <NUM>, a second housing <NUM>, and a cover body <NUM>. One side of the second housing <NUM> is provided over the first housing <NUM> to form the holding cavity <NUM>. A recess <NUM> is formed on the other side of the second housing <NUM>, and a cover <NUM> is provided on the other side of the second housing <NUM> to form a access cavity <NUM>. That is, the direction of the thickness of the dust box <NUM> is in the direction from the first housing <NUM> to the cover <NUM> and in an opposite direction. The holding cavity <NUM> and the access cavity <NUM> is spaced apart by the second housing <NUM> and adjacent to each other.

The first housing <NUM> may, for example, be provided in a slotted structure, and may include, for example, a bottom wall <NUM> and a side wall <NUM> enclosed around the bottom wall <NUM>, with the bottom wall <NUM> and the side wall <NUM> forming the slotted structure. When the second housing <NUM> is provided over the first housing <NUM>, the slotted structure is capped to form the holding cavity <NUM>. The dust suction port <NUM> can be opened on the side wall <NUM> of the first housing <NUM>. The dust box <NUM> may also include a dust suction section <NUM> connected to the dust suction port <NUM> of the first housing <NUM>. The dust suction section <NUM> is set at an angle on the side back from the dust suction port <NUM>. For example, the angle between a plane on which the side of the suction section <NUM> is back from the suction port <NUM> and a plane on which the suction port <NUM> is located is greater than <NUM>° and less than <NUM>°, for example <NUM>°. Of course, the dust suction port <NUM> may also be opened in the second housing <NUM>, and it may also be that the first housing <NUM> and the second housing <NUM> are each partially opened with a dust suction port <NUM> to together form the dust suction port <NUM> when they are covered with each other.

As shown in <FIG>, the second housing <NUM> includes, for example, a top wall <NUM> and an extension <NUM>. The extension <NUM> is attached to an edge region of the top wall <NUM> and may, for example, extend in the direction of the top wall <NUM> toward the side of the first housing <NUM>. The second housing <NUM> may include two extensions <NUM> opposite each other. When the second housing <NUM> is covered on the first housing <NUM> for assembly fit, the top wall <NUM> is covered on the side wall <NUM> of the first housing <NUM>, the extension <NUM> is provided opposite to the side wall <NUM> of the first housing <NUM>, and part of the side wall <NUM> of the first housing <NUM> is sandwiched between the two extensions <NUM>.

One side of the top wall <NUM> is provided over the side wall <NUM> of the first housing <NUM> so that the second housing <NUM> and the first housing <NUM> fit to form the holding cavity <NUM>. As shown in <FIG>, a recess <NUM> is formed on the other side of the top wall <NUM>. Each extension <NUM> has a space connecting to the recess <NUM>, and the side of the extension <NUM> back from the top wall <NUM> may form an air outlet <NUM>, which is connected to the space. The cover <NUM> is provided on the other side of the top wall <NUM> so that the cover <NUM> and the second housing <NUM> cooperate to form the access cavity <NUM>, and the air outlet <NUM> is connected to the access cavity <NUM>. The air outlet <NUM> can also be opened on the first housing <NUM>, or on both the first housing <NUM> and the second housing <NUM>.

The first housing <NUM> and the second housing <NUM> can be connected by nesting, for example, with a nesting groove on the circumference of one side of the top wall <NUM> and a nesting edge on the circumference of the side wall <NUM> of the first housing <NUM>. When the first housing <NUM> and the second housing <NUM> are closed, the nesting edge is embedded in the nesting groove for connection, so that the connection is tighter and can play a sealing role. The sealing effect can be strengthened by providing seals in the nesting grooves. In this embodiment, the second housing <NUM> and the cover 13can be connected by nesting, for example by the fit of a nesting slot and a nesting edge.

As shown in <FIG>, the second housing <NUM> may be provided with a connecting hole <NUM>, which runs through one side of the second housing <NUM> to the other side of the second housing <NUM>. The connecting hole <NUM> may be provided in and through the top wall <NUM> to allow connection between the access cavity <NUM> and the holding cavity <NUM>.

The dust box assembly <NUM> of this embodiment may include a filter assembly, the screen assembly including a first filter <NUM> and a second filter <NUM>. The filtration accuracy of the second filter <NUM> is less than that of the first filter <NUM>. In other words, the second filter <NUM> can act as a coarse filter (primary filter) and the first filter <NUM> as a fine filter (high efficiency filter). For example, for both the first filter <NUM> and the second filter <NUM>, the mesh size of the second filter <NUM> can be larger than the mesh size of the first filter <NUM>. For example, the second filter <NUM> can have <NUM> holes, the first filter <NUM> can have <NUM> holes, the overall size of the second filter <NUM> and the overall size of the first filter <NUM> are comparable to the size of the connecting holes <NUM>, so that the size of holes of the second filter <NUM> is larger than the size of holes of the first filter <NUM>. As shown in <FIG> and <FIG>, the first filter <NUM> can be a folded filter, and the filter element of the first filter <NUM> is, for example, in a continuous Z-shaped folded shape.

The second filter <NUM> and the first filter <NUM> can be provided in the second housing <NUM> and cover the connecting holes <NUM> in turn. The second housing <NUM> is provided with a cross-shaped bracket in the connecting hole <NUM>, but of course it can also be other shapes (as shown in <FIG>, not labeled), the bracket can be used to carry the second filter <NUM> and the first filter <NUM> to stably support them. With the fans <NUM>, objects such as garbage and debris enter the holding cavity <NUM> with the airflow from the dust suction port <NUM>. The filtered air enters the access cavity <NUM> and is extracted through the outlet <NUM>.

The combination setting the first housing <NUM>, the second housing <NUM>, and the cover <NUM> makes the dust box <NUM> stable in structure, and easy to disassemble, which facilitate the cleaning and maintenance of the dust box <NUM>. The combination setting of the dust box <NUM> facilitates makes the first housing <NUM> and the second housing <NUM> cooperate to form the holding cavity <NUM>, and the second housing <NUM> and the cover <NUM> cooperate to form the access cavity <NUM>, thus making the holding cavity <NUM> better to hold debris, garbage and other objects, and at the same time making the passage cavity <NUM> more quickly to discharge the air from the holding cavity <NUM> and speed up the airflow rate.

Further, the multi-stage filter system consisted by the second filter <NUM> and the first filter <NUM> can realize multiple filters for airflow, so that debris, dust and other waste objects can be effectively filtered and stored in the holding cavity <NUM>, to achieve good cleaning effect. The number of connecting holes <NUM> can also be multiple, an example of which is given later in this embodiment.

As shown in <FIG>, the cover <NUM> is used to cover the second housing <NUM> and mates with the second housing <NUM> to form the access cavity <NUM>. In this embodiment, the cover <NUM> and the second housing <NUM> may be sealed together by a seal (shown in <FIG>). As shown in <FIG>, the cover <NUM> may include a body <NUM> and a top cover <NUM>. The body <NUM> is formed with a mounting hole <NUM> corresponding to the location of the first filter <NUM>, and the mounting hole <NUM> connects to the access cavity <NUM>. When the body <NUM> is provided on the side wall <NUM> on the first housing <NUM>, it allows the first filter <NUM> and the second filter <NUM> to be exposed. The upper cover <NUM> is attached to the body <NUM> in a rotatable manner. For example, one side of the upper cover <NUM> is rotated by a pivot to the inner wall of the mounting hole <NUM> enclosed by the body <NUM>. The upper cover <NUM> can be closed by turning the mounting holes <NUM>, or opening the mounting holes <NUM> so that the first filter <NUM> and the second filter <NUM> are exposed. The size of the mounting holes <NUM> is greater than or equal to the size of the connecting holes <NUM>. In other embodiments, the size of the mounting holes <NUM> can be smaller than the size of the connecting holes <NUM>.

Further, the top cover <NUM> can be fitted to the mounting holes <NUM> by a seal adapted to the shape of the mounting holes <NUM> to improve the sealing effect of the dust box <NUM> and to ensure effective suction of the dust suction port <NUM> and effective flow of airflow inside the dust box <NUM>.

By providing a rotatable upper cover <NUM> with mounting holes <NUM>, the second filter <NUM> and the first filter <NUM> can be easily removed or cleaned, and the mounting holes <NUM> can be easily observed inside the dust box <NUM> for inspection and repair.

For the first exemplary structure of the dust box <NUM> described above, the dust box <NUM> may be further provided with a snap assembly <NUM> to facilitate snap connection of the dust box <NUM> to other devices. One example of the snap assembly <NUM> of the dust box is described specifically below.

As shown in <FIG>, the snap assembly <NUM> can be used to make snap connections to other devices, thereby allowing the dust box assembly <NUM> and other devices to be assembled for use. Other devices are, for example, the device body of the cleaning device.

The snap assembly <NUM> may include a press portion <NUM>, a resilient portion <NUM>, and a snap bar <NUM>. The press portion <NUM> connects to the snap bar <NUM>. For example, the snap bar <NUM> may be a single unit, with the press portion <NUM> attached to the central area between the two ends of the snap bar <NUM>. The snap bar <NUM> is provided with snap sections <NUM> protruding from each end of the snap bar <NUM>. As shown in <FIG>, the number of snap bars <NUM> can be two, respectively connected to the press section <NUM> on the opposite sides, each snap bar <NUM> is connected to the press portion <NUM> at one end, and the other end extends in the direction away from the press section <NUM> and is provided with a snap section <NUM>. When the dust box assembly <NUM> of this embodiment is snap-fitted with other devices, for example, there are snap slots correspondingly provided on the other devices, and the snap portion <NUM> is snap-connected to the corresponding snap slot.

The resilient portion <NUM> can be used to resiliently support the press portion <NUM>. The press portion <NUM> is resiliently supported on the dust box <NUM> by the resilient portion <NUM>. As shown in <FIG>, the first housing <NUM> has a first placement slot <NUM> corresponding to a notch <NUM> of the second housing <NUM>, the first placement slot <NUM> extends in the same direction as the side wall <NUM> of the first housing <NUM>, and the first placement slot <NUM> may have a portion of the side wall <NUM> as its slot wall, i.e., the opening direction of the first placement slot <NUM> faces the cover <NUM>. The press portion <NUM> has a second placement slot <NUM>, which extends in the opposite or substantially opposite direction to the projection of the snap portion <NUM>. The resilient portion <NUM> may be a spring, one end of which extends into the first placement slot <NUM> so as to be supported in the first placement slot <NUM>, and the other end of which may be exposed outside the first placement slot <NUM>. The other end of the resilient portion <NUM> is supported in the second placement slot <NUM>. The second placement slot <NUM> may be configured to be sized to accommodate the press portion <NUM> to partially fit into the second placement slot <NUM> when the press portion <NUM> is pressed.

As shown in <FIG>, the other side of the second housing <NUM> may be further formed with a bar-holding slot <NUM> spaced from each other with a recess <NUM>. The snap bar <NUM> may be accommodated in the bar-holding slot <NUM>. When the snap bar <NUM> is accommodated in the bar-holding slot <NUM>, the second housing <NUM> has a notch <NUM> corresponding to the position of the pressing portion <NUM>. Wherein the snap bar <NUM> is accommodated in the bar-holding slot <NUM> with the snap portion <NUM> extending toward the cover13.

In this embodiment, when the second housing <NUM> and the cover <NUM> are closed, the bar-holding slot <NUM> and the access cavity <NUM> may be isolated from each other and not connected to each other to ensure that the suction power of the dust suction port <NUM> makes it better to suck up garbages. Snap holes are provided on the body <NUM> corresponding to the location of the snap portion <NUM>. When the pressing portion <NUM> is not pressed, the elastic portion <NUM> is resiliently supported between the first placement slot <NUM> and the second placement slot <NUM>, the snap bar <NUM> is held against the top, and the snap portion <NUM> can protrude out of the snap hole to allow snap connections to be made when assembled with other devices. When the pressing portion <NUM> is pressed, the elastic portion <NUM> is further elastically compressed, and the pressing part <NUM> can move toward a bottom wall <NUM>, for example, into the first placement slot <NUM>, and the snap lever <NUM> then moves away from the cover <NUM> so that the snap portion <NUM> does not protrude from the snap hole of the cover <NUM>, so that it can be decoupled. The snap bar <NUM> can be limited by the bar-holding slot <NUM>, thereby limiting the pressing portion <NUM> from being pressed and moving further.

Both the first placement slot <NUM> and the second placement slot <NUM> can be provided with positioning posts to position and secure the resilient portion <NUM>, for example, with the ends of the spring on each of the positioning posts.

Referring to <FIG> and <FIG>, this embodiment also provides a second exemplary structure of dust box <NUM>, described as follows.

The first housing 11a is provided in the form of a plate. The second housing 12a includes a top wall 121a and a side wall 122a enclosing the outer perimeter of the top wall 121a. A portion of the side wall 122a extends from the top wall 121a toward the first housing 11a, and that portion of the top wall 121a and the side wall 122a enclose a slotted structure. The other portion of the side wall 122a extends from the top wall 121a toward a cover 13a. When the second housing 12a is provided on the first housing 11a, the top wall 121a, the side walls 122a and the bottom wall 111a form the holding cavity <NUM>. The first housing 11a and the second housing 12a can be hermetically closed by suitable seals.

The dust suction port <NUM> is opened on the side wall 122a of the second housing 12a. The dust box <NUM> may also include a dust suction section 14a, which may be provided on the side wall 122a of the second housing 12a to connect to the dust suction port <NUM> of the second housing 12a, with the dust suction section 14a set at an angle on the side back from the dust suction port <NUM>. For example, the angle between the plane on the side of the suction section 14a that is away from the suction port <NUM> and the plane on which the suction port <NUM> is located is greater than <NUM>° and less than <NUM>°, optionally <NUM>°. Optionally, the dust suction port 14a is removably provided in the second housing 12a. The dust suction port 14a is rotatably provided in the second housing 12a, e.g. the dust suction port 14a is rotatably connected to the second housing 12a on one side of its length (e.g. it can be a rotational connection by a pivot), and the dust suction port 14a is snap connected to the second housing 12a on the other side of its length. The length direction of the dust suction section 14a is the same or substantially the same as the length direction of the dust suction port <NUM>. After the dust suction section 14a and the second housing 12a are disconnected, the other side of the dust suction section 14a in its length direction can be rotated around the axis of rotation of the side of the dust suction section 14a in its length direction, so that the dust suction port <NUM> can be exposed for easy observation, cleaning, repair and other operations.

The side of the top wall 121a back from the first housing 11a is enclosed with another part of the side wall 122a to form a recess 1210a, and the recess 1210a and the slotted structure adjacent to the side of the first shell 11a are located on each side of the top wall 121a. The cover 13a is provided over the second housing 12a to cooperate to form the access cavity <NUM>. The second housing 12a and the cover 13a can be hermetically closed by a suitable seal.

The second housing 12a further includes extensions 123a, the extensions 123a is located on opposite sides of the second housing 12a. The extension 123a has a space where a portion of the side wall 122a of the second housing 12a can serve as the outer wall of the extension 123a (toward the outside of the dust box <NUM>), and of course as the inner wall of the extension 123a. When the first housing 11a and the second housing 12a are capped together, the space of the extension 123a is not directly connected to the holding cavity <NUM>, but to the access cavity <NUM>. The extension 123a is provided with an air outlet <NUM>, and the air outlet <NUM>, for example, is provided on the outer side wall of the extension 123a, for example, as part of the outer side wall 122a of the extension 123a is provided with this air outlet <NUM>, connecting to the space of the extension 123a.

The second housing 12a may be provided with a connecting hole 1211a, and the connecting hole 1211a may run through the top wall 121a. In this embodiment, the number of connecting holes 1211a is multiple and the shape may be, for example, circular, oval or square, etc. The connecting hole 1211a is used to connect the access cavity <NUM> to the holding cavity <NUM>.

The filter assembly includes a first filter 15a and a second filter 16a. The filtration accuracy of the second filter 16a is less than that of the first filter 15a. In other words, the second filter 16a can be used as a coarse filter (primary filter) and the first filter 15a as a fine filter (high efficiency filter). For example, for both the first filter 16a and the second filter 15a, the mesh size of the second filter 16a can be larger than the mesh size of the first filter 15a. For example, the second filter 16a can have <NUM> holes, the first filter 15a can have <NUM> holes, the overall size of the second filter 16a and the overall size of the first filter 15a are comparable to the size of the connecting holes <NUM>, so that the size of holes of the second filter 16a is larger than the size of holes of the first filter 15a. Of course, as shown in <FIG>, the mesh surface of the first filter 15a can be a folded filter.

The second filter 16a is provided in the second housing 12a and can be located inside the connecting hole 1211a or outside the connecting hole 1211a while covering the connecting hole 1211a. The second filter 16a may be a monolithic and cover a plurality of connecting holes 1211a. The second filter 16a may also be more than one and correspondingly located in each connecting hole 1211a. The first filter 15a can be provided in the space of the extension 123a to cover the air outlet <NUM> and filter the airflow coming out of the air outlet <NUM>. The number of second filters 16a is, for example, at least two, corresponding to at least two air outlets <NUM>, i.e. one second filter 16a is provided for each air outlet <NUM>.

By providing the first filter 15a in at least two air outlets <NUM> correspondingly to form a filter system with multiple high-efficiency filters, so that multiple first filters 15a can filter the airflow flowing through at least two air outlets <NUM> separately, which can improve the filtering effect and filtering efficiency and can further enhance the speed of airflow. Further, the plurality of connecting holes 1211a can increase the area through which the airflow passes and avoid the problem of poor airflow caused by the accumulation of debris in the holding cavity100.

The second exemplary structure of the dust box <NUM> described above uses the same construction of the snap assembly <NUM> as the first exemplary structure of the dust box <NUM>. Of course, the second embodiment of the dust box <NUM> can also be provided with a snap assembly <NUM> different from the embodiment, and the different structure of snap assembly <NUM> is described specifically below.

Referring to <FIG> and <FIG>, the snap assembly <NUM> includes a pressing portion 31a, a snap bar 32a, and a resilient portion 33a, the pressing portion 31a connects to the snap bar 32a. For example, the snap bar 32a may be a single unit, such as the pressing portion 31a attached to the central area between the two ends of the snap bar 32a. The snap bar 32a is provided with snap sections 321a protruding from each end of the snap bar 32a. As shown in <FIG>, the number of snap bars 32a can be two, respectively connected to the press section <NUM> on the opposite sides, each snap bar 32a is connected to the press portion 31a at one end, and the other end extends in the direction away from the press section 31a and is provided with a snap portion 321a. The resilient portion 33a is provided at the pressing portion 31a, and the resilient portion 33a is able to rotate with respect to the dust box <NUM>. The pressing portion 31a is able to rotate relative to the dust box <NUM> by means of the elastic portion 33a.

As shown in <FIG>, the other side of the second housing 12a may be further formed with a rod-holding slot 1212a spaced from each other with the recess 1210a. When the second housing 12a and the cover 13a are closed, the bar-holding slot 1212a and the access cavity <NUM> may be isolated from each other and not connected to each other to ensure that the suction power of the dust suction port <NUM> makes it better to suck up garbages. As shown in <FIG>, the snap bar 32a and the press portion 31a may be accommodated in the bar-holding lot 1212a. For example, part of the bar-holding slot 1212a corresponding to the snap bar 32a fits the profile of the snap bar 32a, and part of the bar-holding slot 1212a corresponding to the pressing portion 31a fits the profile of the pressing portion 31a. When the snap bar 32a and the pressing portion 31a are accommodated in the bar-holding slot 1212a, the elastic portion 33a deforms elastically as the pressings portion 31a is pressed.

The resilient portion 33a includes, for example, a rotating rod 331a, a torsion spring 332a, and an attachment body 333a, which is fixed to the pressing portion 31a. A torsion spring placement slot (not marked) is opened in the connection body 333a, for example in the central area with the connection body 333a. The rotating rod 331a is set along the length of the connection body 333a through the connection body 333a, specifically through one end of the connection body 333a, the torsion spring placement slot, and the other end of the connection body 333a, while protruding from both ends of the connection body 333a. The torsion spring 332a is provided on the portion of the rotating rod 331a that is located in the torsion spring placement slot.

Other springs can be used instead of torsion springs 332a.

The ends of the rotating rod 331a can be set directly rotating in the second housing 12a. The rotating rod 331a may also be provided indirectly rotating in the second housing 12a. For example, as shown in <FIG> and <FIG>, the snap assembly <NUM> may also include a fixed portion 34a, which has a slot for the attachment body, and the fixed portion 34a has holes on each side of the wall of the attachment body, and the portion of the rotating rod 331a projecting from the ends of the attachment body 333a is inserted into the holes, enabling a rotating connection. With the pressing portion 31a and the snap bar 32a, placed in the bar-holding slot 1212a, the fixing portion 43a is fixedly connected to the second housing 12a, for example by screws. The ends of the torsion spring 332a can be limited by the second housing 12a and the connector 333a, respectively, to allow for elastic deformation during relative rotation.

When the snap rod 32a is accommodated in the bar-holding slot 1212a, the snap portion 321a extends toward the cover 13a. When the pressing portion 31a is pressed in the direction of the bottom wall 111a, the pressing portion 31a rotates along the axis of the rotating rod 331a, and the torsion spring 332a can further undergo elastic deformation, so that the snap portion 321a can be displaced and move in the direction of the bottom wall 111a. When the pressure on the pressing portion 31a disappears, the torsion spring 332a causes the pressed portion 31a to rotate in the opposite direction (relative to the pressed state) due to the elastic return force, driving the snap portion 321a to move in the opposite direction away from the bottom wall 111a.

Snap holes can be provided in the body of the cover 13a corresponding to the location of the snap portion 321a. When the pressing portion 31a is not pressed, the snap portion 321a protrudes out of the snap hole, so that the snap connection can be made. When the pressing portion 31a is pressed and is subjected to pressure in the direction of the bottom wall 111a, the pressing portion 31a is rotated along the axis of the rotation rod 331a in the direction of the bottom wall 111a, causing the snap part 321a to be displaced in the direction of the bottom wall 111a, so that the snap hole of the cover 13a does not protrude out and the snap process is facilitated. As the pressed portion 31a is pressed further and rotated, the snap bar 32a can be limited by the bar-holding slot 1212a, thereby limiting the pressed portion 31a from being pressed and moving further.

The flexible rotating snap assembly <NUM> makes the snap easy connected and more stable, and its structure is further simplified compared to the previous structure.

Referring to <FIG>, this embodiment describes a third embodiment of the dust box <NUM>.

As shown in <FIG>, the dust box <NUM> is provided with at least two connecting holes 1211b spaced from each other. There are two connecting holes 1211b in this embodiment, and a projection point D of a center C of the dust suction port <NUM> on the line connecting a center A of one connecting hole 1211b and a center B of another connecting hole 1211b is located between the centers A, B of those two connecting holes 1211b. Equivalently, a plumb line is made across the center C of the dust suction port <NUM> for the line connecting the centers A, B of the two connecting holes 1211b, and the intersection D where the plumb line intersects the lines connecting the centers A, B of the two connecting holes 1211b is located between the centers A, B of the two connecting holes 1211b. The center C of the dust suction port <NUM> is the geometric center of a geometric shape that is the same as and matches the shape of the dust suction port <NUM> or the center of gravity of a homogeneous object that is the same as and matches the shape of the dust suction port <NUM>. Similarly, the centers A and B of the connecting holes 1211b are the geometric centers of geometric shapes that are identical and match the shape of the connecting holes 1211b, or the centers of gravity of homogeneous objects that are identical and match the shape of the connecting holes 1211b.

As shown in <FIG> and <FIG>, the dust box <NUM> includes a first housing 11b, a second housing 12b, and a cover 13b. The second housing 12b is provided over the first housing 11b to enclose the holding cavity <NUM>, and the cover 13b is provided over the second housing 12b to enclose the access cavity <NUM>.

As shown in <FIG>, the first housing 11b, for example, is provided in a slotted shape, and may specifically include a bottom wall 111b and a side wall 112b enclosed around the bottom wall 111b, with the bottom wall 111b and the side wall 112b enclosed in a slotted structure. When the second housing 12b is capped on the first housing 11b, the slotted structure of the first housing 11b can be capped into the holding cavity <NUM>. The first housing 11b may, for example, form a dust suction port <NUM> on the side wall 112b, which is connected to the slotted structure, i.e. to the holding cavity <NUM>.

The second housing 12b may be substantially plate shaped. At least two connecting holes 1211b may be provided in the second housing 12b, the connecting holes 1211b running through one side of the second housing 12b to the other side of the second housing 12b. The connecting hole 1211b connects to the holding cavity <NUM>. The installation of at least two connecting holes 1211b enables the airflow entering the dust suction port <NUM> to form a plurality of flow directions, so that the inhaled waste does not accumulate only adjacent to the dust suction port <NUM>, but can be scattered and accumulated with different air ducts, which can improve the space utilization of the dust box <NUM>.

As shown in <FIG>, the projection point D of the center C of the dust suction port <NUM> on the line connecting the center A of the one connecting hole 1211b and the center B of the other connecting hole 1211b is located between A and B, so that the airflow entering the dust suction port <NUM> can be diverted to both sides of the center C, for example, to one connecting hole 1211b and the other connecting hole 1211b and the other connecting hole 1211b. This improves the flow direction of the airflow and allows the inhaled objects to accumulate from both sides, improving the space utilization of the dust box <NUM>.

In some implementations, as shown in <FIG>, the two connecting holes 1211b may be arranged in a direction substantially along the length of the second housing 12b, so that the two connecting holes 1211b are spaced apart and located in the area adjacent to the two ends of the second housing 12b in its length direction (the direction of the line connecting the two ends is substantially the length direction of the second housing 12b), which enables the garbage objects to be drawn into the When the dust box <NUM> is sucked into the dust box, it will follow the airflow and accumulate on both sides, improving the situation that the dust objects are concentrated in the area adjacent to the dust suction port <NUM>, reducing the phenomenon of blocking the dust suction port <NUM>, and improving the space utilization of the dust box <NUM>. Further, the two connecting holes 1211b may be positioned adjacent to the side of the first housing 11b opposite the dust suction port <NUM> (the side away from the vacuum port <NUM>), and the line between the centers of the two connecting holes 1211b and the center of the dust suction port <NUM> is triangular, such as an isosceles triangle. The second housing 12b can also be the one shown in the first embodiment of the dust box <NUM>.

The setting position of the connecting holes 1211b can be adjusted by specifically designing the structure of the first housing 11b, the second housing 12b, and the third housing 13b.

As shown in <FIG>, in one embodiment, the second housing 12b includes a top wall and a side wall, while the first housing 11b is provided in the form of a plate, the third housing 13b is provided over the first housing 11b, and the second housing 12b separates the holding cavity <NUM> from the access cavity <NUM>. At least two of the connecting holes 1211b are partially opened in the top wall and partially opened in the side wall, both connecting to the holding cavity <NUM> and the access cavity <NUM>. Of course, at least two connecting holes can also be opened on the opposite sides of the second housing 12b, respectively.

As shown in <FIG>, in another embodiment, the first housing 11b includes a bottom wall and a side wall, and the second housing 12b is provided over the side wall of the first housing <NUM>. The third housing 13b is provided on the bottom wall of the first housing 11b. The second housing 12b separates the holding cavity <NUM> from the access cavity <NUM>. At least one of the at least two connecting holes 1211b is opened in the second housing 12b and at least the other is opened in the side wall of the first housing 11b, and both are connected to the holding cavity <NUM> and the access cavity <NUM>. Of course, at least two connecting holes 1211b can also be opened on opposite sides of the wall of the first housing 11b, respectively.

Optionally, the dust box assembly <NUM> may include at least two filter assemblies, each for filtering the airflow from one connecting hole 1211b. Each screen assembly includes a first filter 15b, and the number of first filters 15b and connecting holes 1211b may correspond to each other. The first filter 15b may be provided within the connecting hole 1211b to allow for filtration of the airflow, for example, it may be partially accommodated within the connecting hole 1211b. Of course, the first filter 15b can be provided on the side of the second housing 12b toward the cover 13b and correspondingly cover the connecting holes 1211b so that the airflow can be filtered. Optionally, each filter assembly may also include a second filter 16b, with the first filter 15b having a greater filtration accuracy than the second filter 16b. The second filter 16b can be provided inside the connecting hole 1211b, and the first filter 15b covers the second screen 16b, with the first filter 15b being closer to the cover 13b than the second filter 16b. In other words, the first filter 15b is located downstream of the airflow compared to the second filter 16b, and the airflow passes through the second filter 16b and the first filter 15b in turn for double filtration.

By setting at least two connecting holes 1211b, corresponding to the setting of at least two first filters 15b, the airflow entering the holding cavity <NUM> through the dust suction port <NUM> can form at least two ducts, thus changing the duct flow direction and optimizing the flow of airflow, so that the garbage being sucked into the dust box <NUM> can be stored more effectively, thus being able to improve the space utilization of the dust box <NUM>, making the filtering of the dust box <NUM> Better efficiency, higher cleaning efficiency, so as to enhance the suction power of the dust suction port <NUM>.

The cover 13b is provided over the second housing 12b to enclose the access cavity <NUM>. For example, the cover 13b is formed with a recess (not shown) on the side facing the second housing 12b, and the cover 13b and the second housing 12b close together and enclose the recess to form the access cavity <NUM>. Of course, the structure of the cover 13b and the second housing 12b can also be as the cover <NUM> and the second housing <NUM> in the first embodiment of the dust box <NUM>.

Optionally, the dust box <NUM> can also include a rotating member 17b, and the cover 13b can achieve a rotating connection with the first housing 11b through the rotating member 17b, so that the first housing 11b and the cover 13b can close or open with each other. When the first housing 11b and the cover 13b are opened to each other, they can make the second housing 12b exposed, which can facilitate the cleaning and maintenance of the first filter 15b and the second filter 16b, etc. The rotating member 17b includes a rotating shaft 171b, a first shaft receiving portion 172b provided in the first housing 11b, and a second shaft receiving portion 173b provided in the cover 13b, and the ends of the rotating shaft 171b are embedded in the first shaft receiving portion 172b and the second shaft receiving portion 173b, respectively, to enable relative rotation between the first housing 11b and the cover 13b.

The cover 13b includes a body 131b and a upper cover 132b. The body 131b is formed with a mounting hole 130b corresponding to the location of the first filter 15b, and the mounting hole 130b connects to the access cavity <NUM>. When the body 131b is provided on the side wall 112b on the first housing 11b, the second filter 16b and the first filter 15b can be left exposed. The upper cover 132b is attached to the body 131b in a rotatable manner. For example, one side of the top cover 132b is rotated by a rotating axis to the inner wall of the mounting hole 130b enclosed by the body 131b. The upper cover 132b can be closed by turning the mounting holes 130b, or opening the mounting holes 130b so that the second filter 16b and the first filter 15b are exposed. The mounting holes 130b are provided opposite to the connecting holes 1211b and the size of the mounting holes 130b is greater than or equal to the size of the connecting holes 1211b. In other embodiments, the size of the mounting hole 130b can be smaller than the size of the connecting hole 1211b.

Further, the top cover 132b can be fitted to the mounting holes 130b by means of a seal adapted to the shape of the mounting holes 130b (shown in <FIG>, but not labeled) to improve the sealing effect of the dust box <NUM> and to ensure effective suction of the dust suction port <NUM> and effective airflow inside the dust box <NUM>.

By providing a rotatable top cover 132b with mounting holes 130b, the second filter 16b and the first filter 15b can be easily removed or cleaned, and the mounting holes 130b can be easily observed inside the dust box <NUM> for inspection and repair.

The air outlet <NUM> can be opened in the cover 13b. When the second housing 12b is the one in the first embodiment of the dust box <NUM>, the air outlet <NUM> can also be opened in the second housing <NUM>. The cover <NUM> may also be provided with snap holes.

In one embodiment, as shown in <FIG>, the first filter 15b is set at an angle when partially accommodated in the connecting hole 1211b. For example, the first filter 15b can be tilted in the direction of the air outlet <NUM>, so that the airflow filtered by the first filter 15b can be quickly delivered to the air outlet <NUM>. There is an angle between a side of the first filter 15b adjacent to the cover 13b and a side of the second housing 12b toward the cover 13b, such as an angle greater than <NUM>° and less than <NUM>°.

A notch 1213b is formed on one edge of the second housing 12b away from the dust suction port <NUM>, and a side of the second housing 12b toward the cover 13b is provided with a projection 1212b, with the projection 1212b surrounding the notch 1213b. The cover 13b is formed with a mating slot (not shown) on the side toward the second housing 12b, and the shape of the mating slot is adapted to the shape of the projection 1212b, and when the cover 13b is capped to close the second housing 12b, the cover 13b projection 1212b can be embedded in the mating slot to allow the access cavity <NUM> and the notch 1213b to be spaced apart. As shown in <FIG>, the first housing 11b has a first placement slot 1110b with the first placement slot 1110b opening oriented toward the cover 13b, corresponding to the notch 1213b of the second housing 12b. When the second housing 12b is provided on the first housing 11b, the holding cavity <NUM> and the first placement slot 1110b are spaced apart and not connected to each other.

In the third embodiment of the dust box <NUM> described above, the dust box <NUM> can be further provided with a snap assembly <NUM> to facilitate snap connection of the dust box <NUM> to other devices. A further example of the snap assembly <NUM> of the dust box assembly <NUM> is described specifically below.

The snap assembly <NUM> may include a pressing portion 31b, a snap portion 321b protruding from the pressing portion 31b, and a resilient portion 33b. Snap portion 321b is used for snap connection to the snap slot of the device body. The elastic portion 33b is used to support the pressing portion 31b. The pressing portion 31b is formed with a second placement slot 310b, and the shape of the pressing portion 31b is adapted to the shape of the notch 1213b, for example. The opening direction of the second placement slot 310b is opposite to the projection direction of the snap portion 321b. The resilient portion 33b is, for example, a resilient member such as a spring, and one end of the resilient portion 33b extends into the second placement slot 310b and the other end extends into the first placement slot 1110b. When the first housing 11b, second housing 12b and cover 13b are composed together, the other end of the resilient portion 33b is positioned in the first placement slot 1110b to support the pressing portion 31b and the snap portion 321b. The snap portion 321b corresponds to the snap hole of the cover 13b. The first placement slot 1110b is provided with sliding slots on opposite sides of the wall 112b, and the corresponding sides of the pressing portion 31b are provided with sliding rails, and the sliding rails are embedded in the slots to enable the pressing portion 31b to slide in the first placement slot 1110b.

When the pressing portion 31b is not pressed, the resilient portion 33b is resiliently supported between the first placement slot 1110b and the second placement slot 310b, and the pressing portion 31b is held against the top so that the snap portion 321b can protrude out of the snap hole to allow for a snap connection with the device body when assembled. When the pressing portion 31b is not pressed, the elastic portion 33b is further elastically compressed, and the pressing portion 31b is able to move toward the first housing 11b, such as moving into the first placement slot 1110b, and the snap portion 321b moves away from the cover 13b so that the snap portion 321b does not protrude from the clamping hole of the cover 13b, so that it can be unclamped.

By way of example, in one embodiment, a sweeping robot comprises a device body and a dust box assembly <NUM>, the device body is used to clean the floor.

The device body includes a housing, a brush set in the housing, and a drive motor that drives the brush to roll. The device body can be used in conjunction with the dust box assembly <NUM> of this embodiment, for example, the housing of the device body has a snap slot opened in the housing for snap connection with the snap portion <NUM> (321a, 321b). When pressure is applied to the pressing portions <NUM> (31a, 31b), the elastic deformation of the elastic portions <NUM> (33a, 33b) enables the pressing portions <NUM> (31a, 31b) to drive the snap portions <NUM> (321a, 321b) away from the snap slot to enable the snap portions <NUM> (321a, 321b) to be decoupled from the snap slot. When the pressing portions <NUM> (31a, 31b) is not pressed, the elastic recovery force of the elastic part <NUM> (33a, 33b) can cause the pressing portions <NUM> (31a, 31b) to drive the snap portions <NUM> (321a, 321b) to move close to the snap slot or remain close to the snap slot, so that the snap portions <NUM> (321a, 321b) can be snap connected to the snap slot.

This embodiment provides the snap assembly <NUM> to facilitate the connection of the device body and the dust box assembly. In some embodiments, the snap assembly <NUM> includes two snap portions <NUM> (321a), which can make the snap connection between the dust box assembly <NUM> and the device body of this embodiment tighter and enhance the fixation effect of both structures, and the setting of two snap portions <NUM> (321a) can further limit the relative displacement of the dust box <NUM> and the shell of the device body to ensure the stability of the structure.

The connector <NUM> of the dust suction assembly <NUM> of this embodiment can be fixed to the housing of the device body. The good snap effect and limiting effect of the snap assembly <NUM> prevents the dust box <NUM> and the device body from shifting so that the sealing effect of the connector <NUM> and the air outlet <NUM> can be effectively ensured.

In order to further enhance the speed of airflow and to optimize the structure, this embodiment provides an embodiment of the connector <NUM> as follows.

Referring to <FIG>, the profile of the connector <NUM> of this embodiment may be irregularly shaped. One side of each connector <NUM> may be formed with a first vent <NUM>, which is used to connect to the air outlet <NUM> corresponding to the connector <NUM>, and a second vent <NUM> connected to the first vent <NUM> is formed on the other side of the connector <NUM>. The fan <NUM> corresponding to the connector <NUM> is provided on the other side of the connector <NUM> and is connected to the second vent <NUM>. The shape of the first vent <NUM> can be adapted to the shape of the air outlet <NUM> or can be designed on a case-by-case basis. For example, the shape of the first vent <NUM> shown in <FIG> is adapted to the shape of the air outlet <NUM> shown out in <FIG>. The first vent <NUM> as shown in <FIG> can be shaped specifically according to the outlet <NUM> shown in <FIG> and <FIG> so that the two are adapted to each other. In this embodiment, it does not limit the shape of the connector <NUM>, the first vent <NUM>, and similarly the second vent <NUM>.

For example, the first vent <NUM> on one side of the connector <NUM> and the second vent <NUM> on the other side of the connector <NUM> can be staggered, for example, after the connector <NUM> is assembled with the dust box <NUM>, the projection of the first vent <NUM> on the plane where the air outlet <NUM> is located and the projection of the second vent <NUM> on the plane where the air outlet <NUM> is located can partially overlap or completely not overlap. The interior of the connector <NUM> has spaces which have a first vent <NUM> and a second vent <NUM>, respectively. In this way, the path of the airflow within the connector <NUM> may be curved.

In this embodiment, the angle between the plane in which the first vent <NUM> is located and the plane in which the second vent <NUM> is located is greater than <NUM>° and less than <NUM>°. The angle between the plane in which the first vent <NUM> is located and the plane in which the second vent <NUM> is located is greater than or equal to <NUM>° and less than <NUM>°. The angle between the plane in which the first vent <NUM> is located and the plane in which the second vent <NUM> is located is greater than or equal to <NUM>° and less than or equal to <NUM>°. The angle between the plane in which the first vent <NUM> is located and the plane in which the second vent <NUM> is located is greater than or equal to <NUM>° and less than or equal to <NUM>°. The angle between the plane in which the first vent <NUM> is located and the plane in which the second vent <NUM> is located is <NUM>°.

Referring to <FIG>, in another embodiment of the connector <NUM>, the main difference from the above embodiments is the provision of a spacer <NUM> within the first vent <NUM> of the connector <NUM>, which has one or more spaced through holes. The connector <NUM> is connected between the fan <NUM> and the air outlet <NUM>, and the through hole can connect the second vent <NUM> to the air outlet <NUM>. By further providing the spacer <NUM>, it can be used to block foreign objects from entering the fan <NUM> through the first vent <NUM> and causing interference or damage to the fan <NUM>.

The fan <NUM>, for example, is an extractor fan or blower, both of which can achieve the role of extracting air. The fan <NUM> is provided on the other side of the corresponding connector <NUM> and is connected to the second vent <NUM>. When the fan <NUM> is in operation, the airflow is pumped out by the fan <NUM> through the suction portion <NUM>, the holding cavity <NUM>, the access cavity <NUM>, the space of the extension <NUM>, the outlet <NUM>, and the first and second vents <NUM> and <NUM>, in that order.

In this embodiment, the connector <NUM>, when connected to the corresponding air outlet <NUM>, can be sealed by a seal <NUM>, for example a sealing rubber ring. That is, the seal <NUM> may be provided at the connection of the first vent <NUM> and the outlet <NUM> to seal the connection.

This embodiment can optimize the air duct of the whole dust box assembly <NUM> by setting the ventilation structure of the connector <NUM> and the angle between the plane where the first vent <NUM> is located and the plane where the second vent <NUM> is located, so that the air flow is faster. Moreover, the angle between the plane where the first vent <NUM> is located and the plane where the second vent <NUM> is located can make the fan <NUM> have a certain inclination when installed (as shown in <FIG>), which can effectively save the installation space of the fan <NUM>.

As shown in <FIG>, the dust suction assembly <NUM> of this embodiment may further include a vibration dampening pad <NUM>, and the other side of the connector <NUM> with the second vent <NUM> is formed with a holding slot <NUM>, the holding slot <NUM> is connected to the second vent <NUM>, the shape of the holding slot <NUM> is adapted to the shape of the vibration dampening pad <NUM>, the vibration dampening pad <NUM> is placed in the holding slot and located between the fan <NUM> and the connector <NUM>.

By setting the housing slot <NUM> to accommodate the vibration dampening pad <NUM>, the fan <NUM> through the vibration dampening pad <NUM> set on the connector <NUM>, can make effective reduce the vibration of the fan <NUM>, so as to avoid impact of vibration of the fan <NUM> on the connector <NUM> and ensure the sealing effect, thereby the air extraction effect of the fan <NUM> can be ensured.

The cleaning device <NUM> described in the cleaning device embodiment of this application is, for example, the aforementioned sweeping robot or vacuum cleaner, etc., but is not limited to sweeping robots and vacuum cleaners. Referring to <FIG>, the cleaning device <NUM> of this embodiment includes: the device body <NUM> and the dust box assembly <NUM> described in the above embodiments.

For example, for a vacuum cleaner, the device body <NUM> includes, for example, a housing, a circuit board, etc. It can also include a floor brush, which is connected to the housing via an air duct. The dust box assembly <NUM> can be provided in the housing of the device body <NUM> for adsorbing debris, dust, etc. through the floor brush and air duct.

For a sweeping robot, the device body <NUM> includes, for example, a housing, a roller brush, and a motor to drive the roller brush to roll. The roller brush is used to sweep the trash, debris, dust, etc., and the dust box assembly <NUM> is used to adsorb the trash, debris, dust, etc., swept by the roller brush.

In summary, this application can provide greater suction power and more stable airflow through at least dual fan <NUM> and dual air duct design, effectively enhancing the cleaning effect. This application can optimize the airflow direction in the dust box <NUM>, and air duct design to improve the filtering effect and cleaning effect of the dust box <NUM> by setting at least two connecting holes <NUM> for setting the first filter <NUM> respectively.

Claim 1:
A dust box assembly, comprising
- a dust box (<NUM>) having a holding cavity (<NUM>),
- a dust suction port (<NUM>), and
- at least two air outlets (<NUM>),
wherein
- the dust suction port (<NUM>) is connected to the holding cavity (<NUM>);
- the at least two air outlets (<NUM>) are respectively connected to the holding cavity (<NUM>)and formed in two opposite sides of the dust box (<NUM>) ;
- at least two fans (<NUM>) are provided corresponding to the at least two air outlets (<NUM>); and
- the fans (<NUM>) are configured to form an air stream passing through the dust suction port (<NUM>), the holding cavity (<NUM>), and the air outlets (<NUM>) in turn.