Patent Description:
In daily life, hand-held cleaning apparatuses such as vacuums are often used in house cleaning. The handheld cleaning apparatus has a cyclone separation unit arranged in a dust cup. The dust cup is detachably coupled to a main body of the cleaning apparatus. During use of the cleaning apparatus, dirt such as hair or debris enters the dust cup via an air inlet tube of the cleaning apparatus, and separation of dirt and air is carried out by the cyclone separation unit in the dust cup, so that the dirt is retained between the dust cup and the cyclone separation unit, and clean air is discharged out of the cleaning apparatus from an air outlet of the main body of the cleaning apparatus.

In <CIT>, a dirt separator includes a separating chamber defined by an outer wall, the separating chamber having a longitudinal axis; an air inlet into the separating chamber; and a shroud comprising a screen through which air is able to flow out of the separation chamber. The shroud further includes a shroud skirt extending about one end of the shroud, the shroud skirt being fixed to the rest of the shroud at a first, fixed edge, and having a second, free edge. The skirt shroud is formed of a deformable material and includes a plurality of ribs formed on a surface of the skirt.

In view of the above defects and disadvantages in the related art, the present invention provides a cleaning apparatus and a dust scraping device for a cleaning apparatus, which aims to solve the technical problem that hair, dust and other dirt are wound around an outer side of a cyclone separation unit in the cleaning apparatus and allow stable working and convenient replacement of the dust scraping device.

In order to achieve the above objective, the present invention adopts the technical solutions set out in the appended set of claims.

According to a first aspect, the present disclosure provides a dust scraping device for a cleaning apparatus. The cleaning apparatus includes a dust cup and a removable cyclone separation unit arranged in the dust cup. The dust scraping device includes a dust scraping member. The dust scraping member has a connection portion extending in a removal direction of the cyclone separation unit, and a dust scraping portion extending to an interior of the dust cup in a direction perpendicular to the removal direction and slidably abutting against the cyclone separation unit. The dust scraping device is mounted at the dust cup, and the dust scraping portion scrapes off at least part of debris on an outer side of the cyclone separation unit when the cyclone separation unit is removed from the dust cup.

In some embodiments, the dust cup has a cylindrical dust cup main body and an open portion arranged at an end of the dust cup main body; the dust scraping member is a cylindrical dust scraping ring, and the dust scraping ring is coaxially mounted at the open portion of the dust cup; the cyclone separation unit is coaxially arranged within the dust cup, and the cyclone separation unit includes a cylindrical filter screen and a cyclone separation portion located downstream of the filter screen; and the dust scraping ring scrapes off debris on an outer side of the filter screen.

The dust scraping ring has an L-shaped radial section, the connection portion being a transverse portion of the L-shaped radial section, and the dust scraping portion being a vertical portion of the L-shaped radial section.

In some embodiments, the dust scraping ring includes a mounting ring and an annular dust scraping plate; an outer wall of the mounting ring is fixedly coupled to the interior of the dust cup; the annular dust scraping plate is integrally formed on a side, away from the open portion, of the mounting ring, radially extends inwards, and abuts against the filter screen; and the filter screen slides past the annular dust scraping plate and debris is scraped off when the cyclone separation unit is removed from the dust cup.

The dust scraping device further includes: a connection base arranged coaxially with the dust scraping ring and fixed to the open portion of the dust cup; and a dust scraping ring mounting rack arranged coaxially with the dust scraping ring and in the connection base, a side, away from the open portion, of the dust scraping ring mounting rack being fixedly coupled to the mounting ring.

In some embodiments, the dust scraping device further includes a supporting washer arranged coaxially in the mounting ring; the supporting washer has an outer peripheral surface of the supporting washer abutting against an inner peripheral surface of the mounting ring; the supporting washer has an end abutting against the annular dust scraping plate and supports the mounting ring and the annular dust scraping plate.

In some embodiments, an initial position of the annular dust scraping plate is a position where an inner ring of the annular dust scraping plate abuts against a seat of the filter screen.

In some embodiments, an annular positioning step is formed at a junction between an inner side wall of the connection base and the dust scraping ring mounting rack and positions the cyclone separation unit; a cooperation step is formed at the cyclone separation unit and cooperates with the annular positioning step; a seal ring is arranged between the annular positioning step and the cooperation step.

In some embodiments, the dust scraping ring is made of a rubber material.

According to a second aspect, the present disclosure provides a cleaning apparatus including: a gun-shaped main body; a main machine mounted on the main body; a dust cup; a removable cyclone separation unit arranged in the dust cup; and the dust scraping device according to the first aspect of the present disclosure, in which the dust cup and the main machine are arranged on the main body, and the dust scraping device is fixedly mounted at the dust cup and is coupled to the main machine by an engagement structure.

In some embodiments, the cleaning apparatus further includes a skirt partitioning device mounted at a bottom of the cyclone separation unit, wherein the skirt partitioning device includes an annular inner ring and an annular skirt main body.

In some embodiments, the skirt main body has a root coupled to the inner ring and an edge part at an end, away from the inner ring, of the skirt main body, and the edge part has a diameter greater than the root.

In some embodiments, a plurality of collapsing portions are formed on the skirt main body and arranged at intervals in a peripheral direction of the skirt main body, and each of the collapsing portions has a strip-shaped structure extending in a radial direction of the skirt main body.

In some embodiments, the collapsing portions protrude on a first side surface of the skirt main body relative to the skirt main body and are recessed on a second side surface of the skirt main body relative to the skirt main body, in a thickness direction of the skirt main body.

In some embodiments, a size of each collapsing portion protruding beyond the skirt main body on the first side surface of the skirt main body is gradually reduced from the root to the edge part; and/or a size of each collapsing portion recessed in the skirt main body on the second side surface of the skirt main body is gradually reduced from the root to the edge part.

The present invention has the following beneficial effects. For the dust scraping device and the cleaning apparatus according to the present invention, the dust scraping device has the connection portion extending in an axis of the dust cup and a dust scraping portion extending to the interior of the dust cup in a direction perpendicular to the axis of the dust cup and slidably abutting against the cyclone separation unit. The dust scraping device is mounted at the dust cup, and when the cyclone separation unit is removed from the dust cup, the debris on the outer side of the cyclone separation unit is scraped off by the dust scraping portion. Compared with the related art, the dust scraping device can scrape off hair, dust and other debris wound around the outer side of the cyclone separation unit. Meanwhile, the dust scraping device has a simple structure and excellent dust scraping effect, occupies a small space, and is less likely to interfere with other components.

In order to better explain the present invention and facilitate understanding, exemplary embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Terms such as "upper," "lower," "left" and "right" used herein refer to orientations shown in <FIG>. A side where a main body <NUM> is located is defined as "lower," and a side where a dust cup <NUM> and a main machine <NUM> are located is defined as "upper.

The inventors have found during research that the dust cup needs to be cleaned after being used for a period of time, and during cleaning, the dust cup is removed from the main body of the cleaning apparatus and cleaned. Moreover, after the cleaning apparatus is used for a period of time, hair and other dirt may be easily wound around an outer circumference of a filter screen in the cyclone separation unit, which makes it difficult to clean the cleaning apparatus.

In an aspect, referring to <FIG>, embodiments of the present invention provide a cleaning apparatus, including a main body <NUM>, a main machine <NUM> mounted on the main body <NUM>, a dust cup <NUM>, and a removal cyclone separation unit <NUM> arranged in the dust cup <NUM>. The cleaning apparatus further includes a dust scraping device used for the cleaning apparatus.

The dust cup <NUM> and the main machine <NUM> are arranged on the main body <NUM>, and the dust scraping device is fixedly mounted on the dust cup <NUM> and coupled to the main machine <NUM> by an engagement structure.

The main machine <NUM> includes a main machine housing <NUM> and a blower <NUM> mounted in the main machine housing <NUM>.

A lower end surface of the main machine housing <NUM> extends outwards and forms a cylindrical connection end. Three engagement blocks <NUM> are integrally formed and arranged at equal intervals outside the connection end, and the engagement blocks are fitted, engaged and fixed with engagement slots <NUM> formed in the dust scraping device on the dust cup <NUM>. Due to the arrangement of the engagement blocks <NUM> and the engagement slots <NUM>, the dust cup <NUM> and the main machine <NUM> can be assembled or disassembled quickly and conveniently.

The blower <NUM> is electrically coupled to a master control circuit within the main body <NUM> and is used to draw in external air.

Based on the above technical solutions, referring to <FIG> and <FIG>, the dust scraping device includes a dust scraping member; and the dust scraping member has a connection portion extending in a removal direction of the cyclone separation unit <NUM>, and a dust scraping portion extending to an interior of the dust cup <NUM> in a direction perpendicular to the removal direction and slidably abutting against the cyclone separation unit <NUM>.

The dust cup <NUM> has a cylindrical dust cup main body and an open portion arranged at an end of the dust cup main body; the dust scraping member is a cylindrical dust scraping ring <NUM>; and the dust scraping ring <NUM> is coaxially mounted at the open portion of the dust cup <NUM>.

The cyclone separation unit <NUM> is coaxially arranged within the dust cup <NUM>, the cyclone separation unit <NUM> includes a cylindrical filter screen <NUM> and a cyclone separation portion located downstream of the filter screen <NUM>. The dust scraping ring <NUM> is capable of scrapping off debris on an outer side of the filter screen <NUM>, and the debris falls into the dust cup <NUM>.

The main body <NUM> has a gun-shaped structure, and includes a first transverse connection portion <NUM> substantially extending transversely and a handheld portion <NUM> substantially extending longitudinally. A fluid channel substantially extending transversely is arranged in the first transverse connection portion <NUM>; and the fluid channel has a first end used as an air inlet and a second end coupled to a dust cup air inlet <NUM> of the dust cup <NUM>. A dusty air flow enters the dust cup <NUM> from the air inlet of the fluid channel of the first transverse connection portion <NUM> and through the dust cup air inlet <NUM>, and is subjected to dust and gas separation by the cyclone separation unit <NUM> coaxially arranged in the dust cup <NUM>. Referring to <FIG>, a first cyclone separation stage is formed between the filter screen <NUM> and an inner wall of the dust cup <NUM>, and the dusty air flow may be subjected to primary dust and gas separation by the first cyclone separation stage. A skirt partitioning device is arranged at a left end, away from the open portion, of the filter screen <NUM>, and the skirt partitioning device divides an inner chamber of the dust cup <NUM> into a cyclone separation section (i.e., the first cyclone separation stage) and a dirt collection section.

Specifically, the dusty air flow entering the dust cup <NUM> is firstly subjected to first cyclone separation around the outer circumference of the filter screen <NUM>, and the first cyclone separation stage is formed between the filter screen <NUM> and the dust cup <NUM>, wherein dirt separated by the first cyclone separation stage is collected in a first dirt collecting region. Then, a gas separated by the first cyclone separation stage enters a plurality of cyclone cones inside the filter screen <NUM> via holes in the filter screen <NUM> so as to be subjected to second cyclone separation, and the plurality of cyclone cones inside the filter screen <NUM> form a second cyclone separation stage. Dirt separated by the second cyclone separation stage is discharged from dirt outlets of all the cyclone cones and is collected. Referring to <FIG>, a second dirt collecting region is arranged on the left side of each of the cyclone cones and is used for collecting the dirt discharged by each of the cyclone cones. The gas separated by the second cyclone separation stage is discharged to a downstream HEPA filter device and the like via air outlets of the cyclone cones and is finally discharged to the outside.

It should be noted that the filter screen <NUM> is a perforated plate made of a hard material, such as a metal plate. The holes are provided for the purposes of facilitating the passing of the gas separated by the first cyclone separation stage and ensuring that larger-sized dirt is intercepted on the outer side of the filter screen <NUM> by the filter screen <NUM>. The plurality of cyclone cones of the second cyclone separation stage are annularly arranged, and accommodating spaces are formed among the left ends of the plurality of cyclone cones and are used for accommodating a certain dirt in the second dirt collecting region.

Specifically, due to the adoption of the structure that the plurality of cyclone cones are annularly arranged, space is sufficiently utilized during layout of the cyclone separation unit <NUM>, and the cyclone separation unit <NUM> is compact in structure. Moreover, the cyclone separation unit <NUM> allows more cyclones to be arranged in the finite space, and thus, the dust and gas separation efficiency of the cyclone separation unit <NUM> is increased.

The dust scraping device includes a dust scraping member, and the dust scraping member has a connection portion extending in a removal direction of the cyclone separation unit <NUM> and a dust scraping portion extending to an interior of the dust cup <NUM> in a direction perpendicular to the removal direction and slidably abutting against the cyclone separation unit <NUM>.

The dust cup <NUM> has a cylindrical dust cup main body and an open portion arranged on one end of the dust cup main body, the dust scraping member is a cylindrical dust scraping ring <NUM>, and the dust scraping ring <NUM> is coaxially mounted on the open portion of the dust cup <NUM>.

A skirt partitioning device is fixedly mounted at a bottom of the cyclone separation unit <NUM>. When the cyclone separation unit <NUM> is removed from the dust cup <NUM>, the dust scraping device is used to scrape off debris on a first surface of a skirt main body <NUM> on the skirt partitioning device on the bottom of the cyclone separation unit <NUM> into the dust cup <NUM>.

It should be noted that the space between the dust cup <NUM> and the cyclone separation unit <NUM> is used as a separation chamber. The left side of the separation chamber is referred to as a dirt collection section, and the right side of the separation chamber is referred to as a cyclone separation section. When a dust collector is used to clean a lower to-be-cleaned surface such as the ground, a sofa and a bed, the dirt collection section is located on the lower side of the cyclone separation section along a gravity direction, which is beneficial to the concentration of dust to the dirt collection section under the action of its gravity.

Based on the above embodiment <NUM> and embodiment <NUM>, the side wall of the dust cup main body has a dust cup air inlet <NUM> communicating with an air inlet tube. An external dusty air flow drawn in by a blower <NUM> enters from the air inlet tube and enters the separation chamber via the dust cup air inlet <NUM> so as to be subjected to dust and gas separation. Moreover, when a cleaning apparatus is used, generally, the dirt collection section is located on the lower side of the cyclone separation section in a gravity direction, and therefore, dirt separated by the separation chamber is accumulated on the dirt collection section under the action of gravity. The air inlet tube is disposed on a first transverse connection portion <NUM> of a main body <NUM> and communicates with the dust cup air inlet <NUM>, and a structure enabling an intake dusty air flow to spirally advance is arranged in the air inlet tube <NUM>. Specifically, the linear advance of the dusty air flow is changed into spiral advance, so that the centrifugal force is increased, and the dust collection effect is improved. The left end of the dust cup <NUM> has a dust pouring opening and a dust cup end cover <NUM> capable of sealing the dust pouring opening, the dust cup end cover <NUM> is mounted on the dust cup main body by a hinged piece, and the top end of the dust cup end cover <NUM> passes through an engagement member so that the dust cup end cover <NUM> is kept on a closed position. Specifically, the dust cup end cover <NUM> is capable of rotating between the closed position and an open position. On the closed position, the dust cup end cover <NUM> keeps the dirt on the dirt collection section; and on the open position, the dirt may be removed from the dirt collection section.

Further, the dust scraping ring <NUM> has an L-shaped radial section, the connection portion being a transverse portion of the L-shaped radial section, and the dust scraping portion being a vertical portion of the L-shaped radial section. The L-shaped structure is simple and is more compact than that in the related art, moreover, the spatial proportion is small, so that interference with other components on the dust scraping ring <NUM> and the cyclone separation unit <NUM> is minimized. The radial section is not limited to be L-shaped and may also be of a T-shaped structure.

Further, the dust scraping ring <NUM> includes a mounting ring <NUM> and an annular dust scraping plate <NUM>. An outer wall of the mounting ring <NUM> is fixedly coupled to the interior of the dust cup <NUM>. The annular dust scraping plate <NUM> is an L-shaped vertical dust scraping portion and is integrally formed on the side, located on the open portion of the dust cup <NUM>, of the mounting ring <NUM> and radially extends inwards to abut against the filter screen <NUM>. When the cyclone separation unit <NUM> is removed from the dust cup <NUM>, the filter screen <NUM> slides past the annular dust scraping plate <NUM> and the debris is scraped off.

Further, an initial position of the annular dust scraping plate <NUM> is a position where an inner ring of the annular dust scraping plate <NUM> abuts against a seat <NUM> of the filter screen <NUM>, so that the annular dust scraping plate <NUM> scrapes off dust from the filter screen <NUM> on the seat <NUM> of the filter screen <NUM>, then, it is ensured that the dust on the overall filter screen <NUM> may be scraped off by the dust scraping ring <NUM>, and thus, the dust scraping effect of the annular dust scraping plate <NUM> is improved.

Further, the dust scraping device further includes a connection base <NUM> coaxial with the dust scraping ring <NUM> and a dust scraping ring mounting rack <NUM>. The connection base <NUM> is fixed to the open portion of the dust cup <NUM>, the dust scraping ring mounting rack <NUM> is arranged in the connection base <NUM>, and the side, away from the open portion, of the dust scraping ring mounting rack <NUM> is detachably coupled to the dust scraping ring mounting rack <NUM>, so that it is convenient to replace the dust scraping ring <NUM>.

Specifically, a positioning boss is formed between the connection base <NUM> and the dust scraping mounting rack <NUM>. The positioning boss is used for limiting the peripheral direction of the dust scraping ring <NUM> on the dust cup <NUM> and then fixing the connection base <NUM> and the dust cup <NUM> in a glue bonding manner.

Further, based on the above technical solutions, referring to <FIG>, the dust scraping device in the present embodiment further includes a supporting washer <NUM> coaxially arranged in the mounting ring <NUM>, the outer peripheral surface of the supporting washer <NUM> abuts against the inner peripheral surface of the mounting ring <NUM>, the end of the supporting washer <NUM> abuts against the annular dust scraping plate <NUM>, and the supporting washer <NUM> is used for supporting the mounting ring <NUM> and the annular dust scraping plate <NUM>, so that the overall strength of the dust scraping ring <NUM> and the dust scraping effect are improved. Moreover, the dust cup <NUM> is coaxially coupled to a main machine <NUM> by an engagement structure. The dust scraping device is arranged on the open portion, coupled to a main machine housing <NUM>, of the dust cup <NUM>.

Further, an annular positioning step is formed at a junction between an inner side wall of the connection base <NUM> and the dust scraping ring mounting rack <NUM> and is used to position the cyclone separation unit <NUM>; a cooperation step is formed at the cyclone separation unit <NUM> and cooperates with the annular positioning step. The cyclone separation unit <NUM> is mounted in such a way that the cyclone separation unit is exactly engaged with the positioning step, and the seat <NUM> on the filter screen <NUM> abuts against the annular dust scraping plate <NUM>, precisely positioning and rapidly mounting the cyclone separation unit <NUM>.

Further, a seal ring is arranged between the annular positioning step and the cooperation step, so that the sealing property for connection between the cyclone separation unit <NUM> and the dust cup <NUM> is improved.

Further, the dust scraping ring <NUM> is made of a rubber material such as a TPU material, so that the performance of deformability of the dust scraping ring <NUM> moving relative to the cyclone separation unit <NUM> is improved, and interference with components such as the skirt partitioning device in the cyclone separation unit <NUM> is convenient to generate.

Referring to <FIG>, a skirt partitioning device is mounted on a cyclone separation unit of a cleaning apparatus. The skirt partitioning device is of an annular structure. The skirt partitioning device includes an annular inner ring <NUM> and an annular skirt main body <NUM>.

The skirt main body <NUM> has a root coupled to the inner ring <NUM> and an edge part at an end, away from the inner ring <NUM>, of the skirt main body <NUM>. A diameter of the edge part is greater than a diameter of the root. A plurality of collapsing portions <NUM> are formed on the skirt main body <NUM> and arranged at intervals in a peripheral direction of the skirt main body <NUM>, and each of the collapsing portions <NUM> is of a strip-shaped structure extending in a radial direction of the skirt main body <NUM>.

In a thickness direction of the skirt main body <NUM>, the collapsing portions <NUM> protrude on a first side surface of the skirt main body <NUM> relative to the skirt main body <NUM> and are recessed on a second side surface of the skirt main body <NUM> relative to the skirt main body <NUM>. Moreover, on the first side surface of the skirt main body <NUM>, the size of each of the collapsing portions <NUM> protruding beyond the skirt main body <NUM> is gradually reduced from the root to the edge part.

The present invention provides the skirt partitioning device including the inner ring <NUM> and the skirt main body <NUM>. The plurality of collapsing portions <NUM> are formed on the skirt main body <NUM>; and the collapsing portions <NUM> protrude on the first side surface of the skirt main body <NUM> relative to the skirt main body <NUM> and are recessed on the second side surface of the skirt main body <NUM> relative to the skirt main body <NUM>. Moreover, on the first side surface of the skirt main body <NUM>, the size of each of the collapsing portions <NUM> protruding beyond the skirt main body <NUM> is gradually reduced from the root to the edge part. Compared with the related art, the skirt partitioning device is simple in structure while playing a separation role; moreover, the collapsing portions <NUM> reasonable in layout, arc-shaped connection portions formed between the adjacent collapsing portions <NUM> are easy to deform to facilitate the passing of dirt, so that the overall skirt partitioning device is moderate in structural hardness and is less likely to interfere with components on the dust cup, and meanwhile, the dirt is effectively separated, so that the dirt smoothly enters a dirt collection section.

Further, on the second side surface of the skirt main body <NUM>, the size of each of the collapsing portions <NUM> recessed in the skirt main body <NUM> is gradually reduced from the root to the edge part; and/or the size of each of the collapsing portions <NUM> extending in the peripheral direction of the skirt main body <NUM> is gradually reduced from the root to the edge part. It is ensured that the dirt is effectively separated, and meanwhile, it is convenient for the dirt to smoothly enter the dirt collection section.

Further, referring to <FIG>, a first arc-shaped connection portion <NUM> is formed on a first side of each of the collapsing portions <NUM> in the peripheral direction of the skirt main body <NUM>, and a second arc-shaped connection portion <NUM> is formed on a second side of each of the collapsing portions <NUM>, wherein the second arc-shaped connection portion <NUM> of one of the collapsing portions <NUM> is coupled to the first arc-shaped connection portion <NUM> of the other adjacent collapsing portion <NUM>, and an arc-shaped connection portion is formed between each of the collapsing portions <NUM> and the first side surface of the skirt main body <NUM>, so that the appearance is beautiful.

It should be noted that the first side surface of the skirt main body <NUM> is defined as a surface where a junction of the first arc-shaped connection portion <NUM> and the second arc-shaped connection portion <NUM> is located.

Further, an arc-shaped connection portion is formed between each of the collapsing portions <NUM> and the second side surface of the skirt main body <NUM>.

Further, a third arc-shaped connection portion is formed on one side of each of the collapsing portions <NUM> in the peripheral direction of the skirt main body <NUM>, and a fourth arc-shaped connection portion is formed on the second side of each of the collapsing portions <NUM>, wherein the fourth arc-shaped connection portion of one of the collapsing portions <NUM> is coupled to the third arc-shaped connection portion of the other adjacent collapsing portion <NUM>.

Further, on the first side surface of the skirt main body <NUM>, the sizes of the collapsing portions <NUM> protruding beyond the skirt main body <NUM> are gradually reduced from the root to the edge part until disappear; and on the second side surface of the skirt main body <NUM>, the sizes of the collapsing portions <NUM> recessed in the skirt main body <NUM> are gradually reduced from the root to the edge part until disappear, so that the edge part is smooth; and/or the inner ring <NUM> is an annular structural member, the inner side wall of the inner ring <NUM> has an engagement portion coupled to a cyclone separation unit <NUM>, and the engagement portion facilitates the mounting and dismounting of the inner ring <NUM> and the cyclone separation unit <NUM>. The inner ring <NUM> is integrally formed with the root in a peripheral direction of an outer side wall of the inner ring. The inner ring <NUM> and the root of the skirt main body <NUM> form wavy shapes in the peripheral direction of the outer side wall of the inner ring. An annular engagement slot is formed in the left side end of the inner ring <NUM> and is assembled together with the bottom of the cyclone separation unit <NUM>.

Further, the skirt partitioning device is made of silicon rubber. The silicon rubber material is good in deformation effect and facilitates the smooth passing of the dirt.

The skirt partitioning device forms an angle towards an outer wall of a dust cup <NUM> and extends away from a central axis; and/or the dust cup <NUM> includes a cylindrical main body. A dust cup end cover <NUM> is arranged at a first end of the cylindrical main body in an axis direction of the cylindrical main body, and an open portion is arranged on a second end of the cylindrical main body. The skirt partitioning device is located in the middle of the cylindrical main body, wherein a dirt collection section is formed between the dust cup end cover <NUM> and the skirt partitioning device, a cyclone separation section is formed between the open portion and the skirt partitioning device, and the skirt main body obliquely extends to the dirt collection section.

Further, the skirt main body <NUM> is made of an elastically deformable material.

The skirt main body <NUM> is extruded and deformed toward the central axis and away from the open portion on the dust cup <NUM>, so that the skirt main body <NUM> is located on a first position; and the skirt main body <NUM> is extruded and deformed in a direction opposite to the first position, so that the skirt main body <NUM> is located on a second position. In such a way, the skirt main body <NUM> deforms between the first position and the second position.

Specifically, in a process that the cyclone separation unit is removed from the interior of the dust cup <NUM>, when passing through a dust scraping structure, the skirt main body <NUM> is pressed to shrink and deform in a direction opposite to a removal direction of the cyclone separation unit and generate crumples on the positions of the collapsing portions <NUM> (which is similar to the state that an umbrella is folded), so that the skirt main body <NUM> is located on the first position; and after passing through the dust scraping structure, the skirt main body <NUM> is automatically restored to an unfolded state under the action of an elastic restoring force itself. In a process that the cyclone separation unit is mounted in the dust cup <NUM>, when passing through the dust scraping structure, the skirt main body <NUM> is pressed to deform in a direction opposite to a mounting direction of the cyclone separation unit, so that the skirt main body <NUM> is located on the second position; and after passing through the dust scraping structure, the skirt main body <NUM> is automatically restored to an unfolded state under the action of an elastic restoring force itself.

A specific working manner of the skirt partitioning device is that: in a first case, when large-sized dirt moves from a cyclone separation chamber to a dirt collection chamber, a force generated when the dirt acts on the skirt main body <NUM> may cause deformation of the arc-shaped connection portion formed between the adjacent collapsing portions of the skirt main body <NUM>. Therefore, a stressed position of the skirt main body <NUM> may deform to allow the dirt to smoothly pass by.

In a second case, in a process that the cyclone separation unit <NUM> is dismounted, specifically, it is determined whether the skirt main body <NUM> is required to be folded according to the size of a removal opening of the cyclone separation unit <NUM>.

Interference occurs when a dust scraping device on the dust cup <NUM> and the skirt main body <NUM> fixedly arranged on the cyclone separation unit <NUM> pass, and the arc-shaped connection portions formed between the adjacent collapsing portions deform and are stressed to be folded.

If the cyclone separation unit <NUM> may be removed and the size of the open portion on the dust cup <NUM> is large enough, the skirt main body <NUM> is not folded and is directly removed.

Further, the cleaning apparatus further includes an integrated filter element <NUM> which is arranged on an outlet end of a cyclone cone and is used for filtering air separated at a second cyclone separation stage again. The integrated filter element <NUM> is detachably arranged in the cyclone separation unit so as to be conveniently replaced. Meanwhile, air separated from a second separation unit is further filtered by the integrated filter element <NUM>, so that fewer impurities in the air are discharged to the outside, and a dust collection effect is better.

In the description of the present invention, it should be understood that terms such as "first" and "second" are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features. Thus, the feature defined with "first" and "second" may comprise one or more of this feature. In the description of the present invention, the term "a plurality of" means two or more than two, unless specified otherwise.

In the present invention, unless specified or limited otherwise, the terms "mounted," "connected," "coupled," "fixed" and the like are used broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications of two elements, which can be understood by those skilled in the art according to specific situations.

In the present invention, unless specified or limited otherwise, a structure in which a first feature is "on" or "below" a second feature may include an embodiment in which the first feature is in direct contact with the second feature, and may also include an embodiment in which the first feature and the second feature are not in direct contact with each other, but are contacted via an additional feature formed therebetween. Furthermore, a first feature "on," <NUM>% "above," or "on top of" a second feature may include an embodiment in which the first feature is right or obliquely "on," <NUM>% "above," or "on top of" the second feature, or just means that the first feature is at a height higher than that of the second feature; while a first feature "below," "under," or "on bottom of" a second feature may include an embodiment in which the first feature is right or obliquely "below," "under," or "on bottom of" the second feature, or just means that the first feature is at a height lower than that of the second feature.

Claim 1:
A dust scraping device for a cleaning apparatus, the cleaning apparatus comprising a dust cup (<NUM>) and a removable cyclone separation unit (<NUM>) arranged in the dust cup (<NUM>),
wherein:
the dust scraping device comprises a dust scraping member configured as a cylindrical dust scraping ring and having an L-shaped radial section, a transverse portion of the L-shaped radial section extending in a removal direction of the cyclone separation unit (<NUM>), and a vertical portion of the L-shaped radial section extending to an interior of the dust cup (<NUM>) in a direction perpendicular to the removal direction and slidably abutting against the cyclone separation unit (<NUM>); and
the dust scraping device is mounted at the dust cup (<NUM>), and the vertical portion is a dust scraping portion and scrapes off at least part of debris on an outer side of the cyclone separation unit (<NUM>) when the cyclone separation unit (<NUM>) is removed from the dust cup (<NUM>),
characterized in that the dust scraping device further comprises:
a connection base (<NUM>) arranged coaxially with the dust scraping ring (<NUM>) and fixed to an open portion of the dust cup (<NUM>); and
a dust scraping ring mounting rack (<NUM>) arranged coaxially with the dust scraping ring (<NUM>) and in the connection base (<NUM>), wherein a side, away from the open portion, of the dust scraping ring mounting rack (<NUM>) is detachably coupled to the dust scraping ring (<NUM>).