Vacuum cleaner

A vacuum cleaner (100) is provided. The vacuum cleaner (100) includes a hand-held device (400), and the hand-held device includes: a housing (401); a dust cup (402) disposed in the housing (401) and having a dust outlet in a bottom thereof; and an ash pouring plate (405) disposed at a bottom of the housing (401. The ash pouring plate (405) is configured to be movable between an open position for opening the dust outlet and a closed position for closing the dust outlet.

CROSS REFERENCE TO RELATED APPLICATION

The present application is a National Stage of International Application No. PCT/CN2016/077008, filed Mar. 22, 2016, which claims the priority and benefit of Chinese Patent Application No. 201610037164.0, 201620054836.4, 201610036809.9, 201620054591.5, 201610037162.1, 201620053970.2, all filed on Jan. 20, 2016, and 201610127643.1 and 201620171694.X, both filed on Mar. 7, 2016, the contents of which are incorporated herein by reference in their entirety.

FIELD

Embodiments of the present disclosure generally relate to a vacuum cleaner technical field, and more particularly, to a vacuum cleaner.

BACKGROUND

In the related art, a dust cup is usually required to be removed from a housing of a hand-held vacuum cleaner in order to pour ash, and the whole ash pouring process is complex. Moreover, the dust cup is required to be remounted to the housing after the completion of the ash pouring, and thus the whole ash pouring process takes a lot of time.

SUMMARY

Embodiments of the present disclosure seek to solve at least one of the problems existing in the related art to at least some extent. Accordingly, an objective of the present disclosure is to provide a vacuum cleaner, which can be conveniently used and packaged.

The vacuum cleaner according to embodiments of the present disclosure includes a hand-held device. The hand-held device includes: a housing; a dust cup disposed in the housing and having a dust outlet in a bottom thereof; and an ash pouring plate disposed at a bottom of the housing, in which the ash pouring plate is configured to be movable between an open position for opening the dust outlet and a closed position for closing the dust outlet.

With the vacuum cleaner according to embodiments of the present disclosure, by providing the above ash pouring plate, dirt and dust in the dust cup can be conveniently poured out, such that the ash pouring process is greatly simplified.

According to an embodiment of the present disclosure, a first end of the ash pouring plate is pivotably connected to the housing so that the ash pouring plate is rotatable between the open position and the closed position, and a second end of the ash pouring plate is configured to be separably fitted with the housing.

According to an embodiment of the present disclosure, the second end of the ash pouring plate is configured to be separably fitted with the housing via at least one fitting structure, and the fitting structure includes a first fitting member disposed at the second end of the ash pouring plate, and a second fitting member disposed at the housing, when the ash pouring plate is in the open position, the first fitting member is separated from the second fitting member, in which when the ash pouring plate is in the closed position, the first fitting member is fitted with the second fitting member.

According to an embodiment of the present disclosure, the first fitting member and the second fitting member are configured as snaps configured to be buckled with each other.

According to an embodiment of the present disclosure, the vacuum cleaner further includes: a press button disposed in the housing, in which the second fitting member is disposed on the press button, and when the press button is pressed down, the second fitting member moves away from the first fitting member so as to be separated from the first fitting member.

According to an embodiment of the present disclosure, an elastic element is provided between the press button and the dust cup, and configured to constantly push the press button in a direction running away from a center of the housing.

According to an embodiment of the present disclosure, the elastic element is configured as a spring.

According to an embodiment of the present disclosure, two fitting structures are provided, and the two fitting structures are bilaterally symmetrical.

According to an embodiment of the present disclosure, the ash pouring plate extends in a front and rear direction, and a rear end of the ash pouring plate is pivotably connected to the housing.

According to an embodiment of the present disclosure, a sealing member is disposed between the ash pouring plate and the dust outlet so as to seal a gap between the ash pouring plate and the dust outlet.

According to an embodiment of the present disclosure, the dust cup includes a first cyclone provided with an air intake channel, the air intake channel having a first air intake port and a first air outtake port; a cyclone assembly including a plurality of second cyclones arranged in parallel along a circumferential direction of the first cyclone, two of the plurality of second cyclones defining a guiding channel therebetween, the guiding channel communicating with the first air outtake port and guiding the airflow to an outer periphery of the cyclone assembly along a tangent line of a circumferential wall of one second cyclone adjacent to the guiding channel, each second cyclone having an air inducing notch so that the airflow enters the second cyclone along a tangent direction, an air guiding pipe being provided in each second cyclone and spaced apart from an inner circumferential wall of the second cyclone, the air guiding pipe having an air guiding inlet and an air guiding outlet, and the air guiding inlet communicating with the air inducing notch; and a filter disposed along the outer periphery of the cyclone assembly, the airflow at the outer periphery of the cyclone assembly tangentially flowing into the second cyclone through the filter and the air inducing notch.

According to an embodiment of the present disclosure, the air guiding pipe is eccentrically disposed with respect to the second cyclone.

According to an embodiment of the present disclosure, the air guiding pipe extends in a vertical direction.

According to an embodiment of the present disclosure, the air guiding pipe has a partition plate therein.

According to an embodiment of the present disclosure, the air guiding pipe is located in an upper portion of the second cyclone.

According to an embodiment of the present disclosure, the air guiding inlet is provided at a lower end of the air guiding pipe, and the air guiding outlet is provided at an upper end of the air guiding pipe.

According to an embodiment of the present disclosure, the filter is arranged around the cyclone assembly and has a relief opening therein, and the relief opening is opposed to the guiding channel.

According to an embodiment of the present disclosure, a connecting wall is connected to a first side of the air inducing notch of each second cyclone, in which the connecting wall is tangent to a side wall of the second cyclone, and an extending part extends out from a second side of the air inducing notch of the second cyclone, and the extending part and the connecting wall define a tangential air inducing channel therebetween.

According to an embodiment of the present disclosure, the extending part extends towards a corresponding connecting wall along a flowing direction of the airflow.

According to an embodiment of the present disclosure, an inner wall of an end of the air intake channel has a guiding surface configured to guide the airflow in the air intake channel to the guiding channel, wherein the first air outtake port is provided at the end of the air intake channel.

According to an embodiment of the present disclosure, the guiding surface is configured as an arc surface.

According to an embodiment of the present disclosure, the guiding channel is configured to have a width gradually increased along a flowing direction of the airflow.

According to an embodiment of the present disclosure, each second cyclone has an opening in a bottom thereof.

According to an embodiment of the present disclosure, the filter is configured as a filter net or an insert having filtering holes.

According to an embodiment of the present disclosure, the vacuum cleaner further includes: a machine body; and a handle disposed on the machine body and pivotable between a first position and a second position, wherein the handle is located at a front side of the machine body when the handle is in the first position, and the handle is located at a rear side of the machine body when the handle is in the second position.

According to an embodiment of the present disclosure, at least one lock catch assembly is disposed between the machine body and the handle, and is configured to be movable between a locking position for locking the handle and a pivoting position for making the handle pivotable between the first position and the second position.

According to an embodiment of the present disclosure, each lock catch assembly includes: a retainer disposed at the machine body; and a lock catch disposed at the handle and configured to be separably fitted with the retainer, wherein the lock catch is fitted with the retainer when the lock catch assembly is in the locking position, and the lock catch is separated from the retainer when the lock catch assembly is in the pivoting position.

According to an embodiment of the present disclosure, one of the lock catch and the retainer is provided with a fitting part, the other one of the lock catch and the retainer is provided with a fitting groove, and the fitting part is configured to be separably fitted with the fitting groove.

According to an embodiment of the present disclosure, the fitting part includes a plurality of fitting teeth arranged in a circumferential direction of the one of the lock catch and the retainer and spaced from one another, the fitting groove includes a plurality of sub fitting grooves arranged in a circumferential direction of the other one of the lock catch and the retainer and spaced from one another, and the plurality of fitting teeth is configured to be separably fitted with the plurality of sub fitting grooves.

According to an embodiment of the present disclosure, one of a surface of the lock catch and a surface of the retainer opposite to each other is provided with a guiding post, the other one of the surface of the lock catch and the surface of the retainer opposite to each other is provided with a guiding hole, and the fitting part is fitted with the fitting groove when the guiding post extends into the guiding hole.

According to an embodiment of the present disclosure, an end surface of a free end of the guiding post extends beyond a side surface of the fitting part adjacent to the retainer.

According to an embodiment of the present disclosure, the lock catch assembly further includes a pull rod movably disposed in the handle, and the pull rod is fitted with the lock catch so that the lock catch is configured to be separably fitted with the retainer.

According to an embodiment of the present disclosure, the pull rod is disposed within the handle and movable between a fixing position and a releasing position, a pull block is provided at an end of the pull rod adjacent to a center of the machine body, one of the pull block and the machine body is provided with a fixing protrusion, the other one of the pull block and the machine body is provided with a fixing groove, when the pull rod is in the fixing position, the fixing protrusion is fitted with the fixing groove, so that the handle is immovable with respect to the machine body, when the pull rod is in the releasing position, the fixing protrusion is separated from the fixing groove, so that the handle is forward and backward rotatable with respect to the machine body.

According to an embodiment of the present disclosure, the lock catch is fitted with the retainer when the pull rod is in the fixing position, and the lock catch is separated from the retainer when the pull rod is in the releasing position.

According to an embodiment of the present disclosure, the pull rod is connected with the pull block via a connecting structure, and the connecting structure includes: two ear plates disposed on the pull rod and spaced apart from each other, each ear plate having a connecting hole therein; and two connecting posts disposed on the pull block and spaced apart from each other, wherein the two connecting posts are configured to fit with the two connecting holes respectively so as to connect the pull block to the pull rod.

According to an embodiment of the present disclosure, the pull block is integral with the pull rod.

According to an embodiment of the present disclosure, the vacuum cleaner further includes: a first resetting member disposed between the retainer and the lock catch and configured to constantly push the lock catch in a direction running away from a center of the retainer; or a first resetting member disposed at a side of the lock catch away from the retainer and configured to constantly push the lock catch towards the retainer.

According to an embodiment of the present disclosure, the first resetting member is configured as a spring.

According to an embodiment of the present disclosure, the vacuum cleaner further includes: a second resetting member disposed within the handle and configured to constantly push the pull block towards the fixing position.

According to an embodiment of the present disclosure, the lock catch has a first inclined surface, the pull rod has a second inclined surface, and the second inclined surface is configured to fit with the first inclined surface so that the lock catch is configured to be separably fitted with the retainer.

According to an embodiment of the present disclosure, a positioning member is provided on an inner wall of the handle, and the lock catch is provided with a positioning groove configured to fit with the positioning member.

According to an embodiment of the present disclosure, two lock catch assemblies are provided and bilaterally symmetrical with respect to a center of a pivoting shaft.

According to an embodiment of the present disclosure, one of two lock catches of the two lock catch assemblies is provided with a circumferential position limiting protrusion, and the other one of the two lock catches of the two lock catch assemblies is provided with a circumferential position limiting groove.

According to an embodiment of the present disclosure, the handle is pivotably connected with the machine body via a pivoting shaft, and the lock catch assembly is penetrated by the pivoting shaft.

According to an embodiment of the present disclosure, the pivoting shaft includes a threaded fastener and at least one nut connected to a free end of the threaded fastener.

According to an embodiment of the present disclosure, when the pull rod moves to the releasing position from the fixing position, the pull rod moves in a direction running away from the center of the machine body and along a length direction of the handle.

According to an embodiment of the present disclosure, when the pull rod is in the fixing position, the handle is in a substantially upright state with respect to the machine body.

According to an embodiment of the present disclosure, the pull rod is provided with a pull rod button, an opening is formed in the handle and the pull rod button extends out of the handle through the opening.

REFERENCE NUMERALS

DETAILED DESCRIPTION

In the specification, unless specified or limited otherwise, relative terms such as “central”, “length”, “width”, “thickness”, “front”, “rear”, “right”, “left”, “lower”, “upper”, “horizontal”, “vertical”, “up”, “top”, “bottom”, “inner”, “outer”, “axial”, “radial”, “circumferential” as well as derivative thereof (e.g., “horizontally”, “downwardly”, “upwardly”, etc.) should be construed to refer to the orientation as then described or as shown in the drawings under discussion. These relative terms are for convenience of description and do not require that the present disclosure be constructed or operated in a particular orientation. In addition, 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. Thus, features limited by “first” and “second” are intended to indicate or imply including one or more than one these features. In the description of the present disclosure, “a plurality of” relates to two or more than two.

In the description of the present disclosure, unless specified or limited otherwise, it should be noted that, terms “mounted,” “connected” and “coupled” may be understood broadly, such as permanent connection or detachable connection, electronic connection or mechanical connection, direct connection or indirect connection via intermediary, inner communication or interreaction between two elements. These having ordinary skills in the art should understand the specific meanings in the present disclosure according to specific situations.

In the description of the present disclosure, a structure in which a first feature is “on” a second feature may include an embodiment in which the first feature directly contacts the second feature, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature so that the first feature does not directly contact the second feature, unless otherwise specified. Furthermore, a first feature “on,” “above,” or “on top of” a second feature may include an embodiment in which the first feature is right “on,” “above,” or “on top of” the second feature, and may also include an embodiment in which the first feature is not right “on,” “above,” or “on top of” the second feature, or just means that the first feature has a sea level elevation larger than the sea level elevation of the second feature. While first feature “beneath,” “below,” or “on bottom of” a second feature may include an embodiment in which the first feature is right “beneath,” “below,” or “on bottom of” the second feature, and may also include an embodiment in which the first feature is not right “beneath,” “below,” or “on bottom of” the second feature, or just means that the first feature has a sea level elevation smaller than the sea level elevation of the second feature.

A vacuum cleaner100according to embodiments of the present disclosure will be described in the following with reference toFIGS. 1-37. The vacuum cleaner100may be a chargeable push-rod vacuum cleaner. In the following descriptions of the present disclosure, the chargeable push-rod vacuum cleaner is taken as an example to illustrate the vacuum cleaner100. Certainly, those skilled in the related art may understand that the vacuum cleaner100may also be another type of vacuum cleaner, but not limited to be the chargeable push-rod vacuum cleaner.

As shown inFIGS. 1-37, the vacuum cleaner100according to embodiments of the present disclosure, such as the chargeable push-rod vacuum cleaner, includes a machine body and a handle1.

The handle1is disposed at the machine body and pivotable between a first position and a second position. When the handle1is in the first position, the handle1is at a front side of the machine body, and when the handle1is in the second position, the handle1is at a rear side of the machine body. When the handle1is at the front side of the machine body, it is convenient for use under a table or bed or similar places; when the handle1is at the rear side of the machine body, a volume of the vacuum cleaner100can be reduced, thus facilitating packaging thereof.

For example, with reference toFIGS. 1-24, the handle2is connected to an upper portion of the machine body1and is pivotable with respect to the machine body1. When normally used or in a general storage state, the handle2is in a substantially upright state with respect to the machine body1(as shown inFIGS. 1-3), i.e., the handle2substantially extends upwards vertically from a top of the machine body1, and a central axis of the handle2generally coincides with a central axis of the machine body1at this time. When it is needed to clean a place under the table or bed or similar places, the handle2may be pivoted forwards so that the entire handle2can be in the front side of the machine body1(as shown inFIG. 4), and thus it is convenient to clean the place under the table or bed or similar places; when a certain storage requirement needed to be satisfied, the handle2may be pivoted backwards so that the handle2can be in the rear side of the machine body1(as shown inFIG. 5), and thus a space occupied by the entire vacuum cleaner100can be reduced, thereby greatly satisfying the requirements of packaging and storage. Herein, it should be noted that direction “front” may be construed as a side of the vacuum cleaner100away from a user when the vacuum cleaner100is in an actual use, and an opposite direction of direction “front” is defined as direction “rear”, i.e., a side of the vacuum cleaner100facing the user.

In above descriptions, the handle2is pivoted forwards by an angle of α with respect to the machine body1from the upright state, and the handle2is pivoted backwards by an angle of β with respect to the machine body1from the upright state, in which α, β may satisfy following formula respectively: 0°<α≤90°, 0°<β≤180°. For example, α=60° or 70°, β=160° or 170°. It may be understood that specific values of α, β may be set according to actual requirements so as to satisfy the actual requirements greatly.

When the vacuum cleaner100is normally used, the central axis of the handle1coincides with the central axis of the machine body, and the vacuum cleaner100is in the upright state at this time. when it is needed to clean the place under the table or bed or places inconvenient to clean, the handle1may be pivoted forwards by a certain angle of α with respect to the machine body from the above upright state, so that the user can easily hold the handle1to clean the place under the table or bed or places inconvenient to clean without the user bending down, when a roll brush of the vacuum cleaner100extends to the place under the table or bed or places inconvenient to clean. After cleaning is finished, the handle1may be pivoted backwards by a certain angle of β with respect to the machine body from the above upright state, so as to reduce the space occupied by the vacuum cleaner100, thus facilitating storage.

With the vacuum cleaner100(such as the chargeable push-rod vacuum cleaner) according to embodiments of the present disclosure, by providing the handle1pivotable between the first position and the second position, it is convenient for the vacuum cleaner100to be used in the place under the table or bed or similar places, and the vacuum cleaner100also satisfies requirements of folding and packaging, has a simple structure and is easy to realize.

According to some embodiments of the present disclosure, at least one lock catch assembly2is provided between the machine body and the handle1. The lock catch assembly2is configured to be movable between a locking position for locking the handle1and a pivoting position for making the handle1pivotable between the first position and the second position. The locking position may be a position in which the handle1is in the upright state, and the handle1cannot be rotated at this time. Optionally, one or more than one lock catch assembly2may be provided.

A vacuum cleaner100(such as the chargeable push-rod vacuum cleaner) according to an embodiment of the present disclosure will be described with reference toFIGS. 1-17.

With reference toFIG. 6, in combination withFIGS. 7-15, the lock catch assembly is disposed between the machine body1and the handle2, and the handle2is movable with respect to the machine body1or not by the lock catch assembly. Specifically, the lock catch assembly includes a pull rod31and a pull block32, the pull rod31is disposed in the handle2and movable between a fixing position and a releasing position, the pull rod31is preferably coaxial with handle2, and the pull block32is connected to an end of the pull rod31adjacent to a center of the machine body1(for example, a lower end inFIG. 7). One of the pull block32and the machine body1is provided with a fixing protrusion321, and the other one of the pull block32and the machine body1is provided with a fixing groove11, i.e., when the fixing protrusion321is provided on the pull block32, the fixing groove11is provided in the machine body1(as shown inFIGS. 12-15), and when the fixing protrusion321is provided on the machine body1, the fixing groove11is provided in the pull block32(not shown in figures). The fixing groove11preferably has a shape matched with a shape of the fixing protrusion321. It may be understood that, specific shapes and configurations of the fixing protrusion321and the fixing groove11may be set according to actual requirements, which is not limited by the present disclosure.

Optionally, the pull rod31and the pull block32may be two independent parts respectively. With reference toFIG. 7, in combination withFIG. 8, the pull rod31and the pull block32are produced independently and respectively, thus reducing manufacturing difficulty and accuracy of the pull rod31and saving cost. Specifically, the pull block32is connected with the pull rod31via a connecting structure. The connecting structure includes two ear plates312and two connecting posts322, the two ear plates312are disposed on the pull rod31and spaced apart from each other, each ear plate312has a connecting hole3121therein, and the two connecting posts322are disposed on the pull block32and spaced apart from each other. The two connecting posts322are respectively fitted with the two connecting holes3121so as to connect the pull block32to the pull rod31.

Certainly, the pull rod31may also be integral with the pull block32, and the pull rod31and the pull block32are produced as a whole at this time, thus reducing parts of the vacuum cleaner100, facilitating assembling and improving assembling efficiency.

When the pull rod31is in the fixing position, the fixing protrusion321is fitted with the fixing groove11so that the handle2is fixed with respect to the machine body1, i.e., the handle2cannot be rotated with respect to the machine body1. Herein, it should be noted that “fixed” may be construed as a meaning that the handle2cannot be moved with respect to the machine body1at all, or, the handle2may be slightly moved with respect to the machine body1, but the movement thereof is in a very small range. For example, due to limitations of processing and assembling of the fixing protrusion321and the fixing groove11, a gap is formed between the fixing protrusion321and the fixing groove11, so that the handle2can still move with respect to the machine body1to a certain extent, when the fixing protrusion321is fitted with the fixing groove11. When the pull rod31is in the releasing position, the fixing protrusion321is separated from the fixing groove11so that the handle2can be rotated forwards and backwards with respect to the machine body1, in which whether the handle2is rotated forwards or backwards is dependent on user's actual requirements.

With the vacuum cleaner100according to embodiments of the present disclosure, by providing the lock catch assembly, the handle2can be rotated forwards so that it is convenient for the vacuum cleaner to be used in the place under the table or bed, and the handle2can also be rotated backwards so as to satisfy the requirements of folding and packaging, moreover, the handle2is fixed with respect to the machine body1when the pull rod31is in the fixing position, thus ensuring user's normal use.

According to an embodiment of the present disclosure, with reference toFIG. 7, in combination withFIGS. 9a-10b, the lock catch assembly further includes: a retainer33and a lock catch34. The retainer33is disposed on the machine body1. For example, the retainer33may be fixed on the machine body1, and the retainer33is immovable with respect to the machine body1at this time, i.e., the retainer33has no movement with respect to the machine body1. The lock catch34is disposed on the handle2, and the lock catch34is located between the retainer33and the pull block32. For example, the lock catch34is fixed on the handle2and configured to be separably fitted with the retainer33. When the pull rod31is in the fixing position, the lock catch34is fitted with retainer33, thus further ensuring that the handle2is immovable with respect to the machine body1. At this time, the fixing protrusion321and the fixing groove11, as well as the lock catch34and the retainer33function as a dual protection. When the pull rod31is in the releasing position, the lock catch34is separated from the retainer33, so that the handle2can be rotated forwards or backwards successfully with respect to the machine body1.

Furthermore, one of lock catch34and the retainer33is provided with a fitting part, the other one of the lock catch34and the retainer33is provided with a fitting groove, and the fitting part is configured to be separably fitted with the fitting groove. Optionally, the fitting part includes a plurality of fitting teeth341arranged in a circumferential direction of the one of the lock catch34and the retainer33and spaced from one another, the fitting groove includes a plurality of sub fitting grooves331arranged in a circumferential direction of the other one of the lock catch34and the retainer33and spaced from one another, the plurality of fitting teeth341is configured to be separably fitted with the plurality of sub fitting grooves331.

For example, as shown inFIGS. 9aand 10b, a round groove is formed in a side surface of the retainer33adjacent to the lock catch34and recessed in a direction running away from the lock catch34, three sub fitting grooves331are evenly provided in a circumferential direction of the round groove and spaced from one another, and all the three sub fitting grooves331communicate with the round groove so as to be easy to produce. Correspondingly, three fitting teeth341are provided on a side surface of the lock catch34adjacent to the retainer33, the three fitting teeth341are evenly distributed in a circumferential direction of the lock catch34and spaced from one another, and the fitting tooth341preferably has a shape matched with a shape of the fitting groove. For example, each fitting tooth341has a substantial sector shape. When the pull rod31is in the fixing position, the tree fitting teeth341extends into corresponding fitting grooves respectively. When the pull rod31is in the releasing position, the lock catch34moves away from the retainer33so that all the three fitting teeth341are separated from the corresponding fitting grooves. Each fitting tooth341may have a hollow configuration so as to save materials and reduce a material cost. It may be understood that, specific shapes of the fitting tooth341and the fitting groove may be adjusted adaptably according to actual assembling requirements, which is not limited by the present disclosure.

Optionally, one of a surface of the lock catch34and a surface of the retainer33opposite to each other is provided with a guiding post342, the other one of the surface of the lock catch34and the surface of the retainer33opposite to each other is provided with a guiding hole332, and the fitting part is fitted with the fitting groove when the guiding post342extends into the guiding hole332. Furthermore, an end surface of a free end of the guiding post342may extend beyond a side surface of the fitting part adjacent to the retainer33.

For example, with respect toFIG. 7, in combination withFIGS. 9aand 10b, the guiding post342is disposed on the surface of the lock catch34opposite to the retainer33and at an outer side of the fitting part, and the guiding post342has a substantial cylinder shape. A free end of the guiding post342is configured to have a cross sectional area gradually decreased in a direction running away from another end of the guiding post342, so as to extend into the guiding hole332easily. In a width direction of the lock catch34, the guiding post342has a height preferably larger than a thickness of the fitting part, so that when the pull rod31is in the fixing position, the guiding post342may first extend into the guiding hole332to be fitted with the guiding hole332. At this time, the retainer33and the lock catch34can be positioned well, and thus it is convenient for the fitting part to be fitted with the fitting groove quickly and accurately in subsequent procedures. The guiding hole332is formed in the surface of the retainer33opposite to the lock catch34and is opposed to the guiding post342.

As shown inFIGS. 8 and 10a, a side surface of the lock catch34adjacent to the pull block32is provided with a first inclined surface343, and the first inclined surface343is configured to obliquely extend in a direction approaching a central axis of the handle2from top to bottom. A side surface of the pull block32adjacent to the lock catch34is provided with a second inclined surface322, and the second inclined surface322is configured to obliquely extend in a direction running away from the central axis of the handle2from bottom to top. When the pull rod31is moved to the releasing position from the fixing position, the first inclined surface343is fitted with the second inclined surface322so that the lock catch34moves away from the retainer33.

Specifically, when the pull rod31is moved to the releasing position from the fixing position, for example, the pull rod31may drive the pull block32to move away from the machine body1, in the process, since the first inclined surface343touches the second inclined surface322all the time, the lock catch34will move away from the retainer33, so that the fitting part is separated from the fitting groove, and thus the lock catch34is released. In the above process, the fixing protrusion321of the pull block32also moves away from the fixing groove11in the machine body1gradually and is finally separated from the fixing groove11, so that the handle2can be rotated forwards or backwards. When the pull rod31is moved to the fixing position form the releasing position, for example, the pull rod31may drive the pull block32to move towards the machine body1, in this process, since the first inclined surface343touches the second inclined surface322all the time, the pull block32pushes the lock catch34to move towards the retainer33, so that the fitting part is fitted within the fitting groove, and the lock catch34is locked by the retainer33. In the above process, the fixing protrusion321of the pull block32extends into the fixing groove11in the machine body1to be fitted within the fixing groove11, and thus the handle2is locked, so that the handle2cannot be rotated with respect to the machine body1.

Furthermore, as shown inFIG. 7, the vacuum cleaner100further includes a first resetting member35, the first resetting member35is disposed between the retainer33and the lock catch34, and the first resetting member35is configured to constantly push the lock catch34in a direction running away from a center of the retainer33. Optionally, the first resetting member35is configured as a spring, but not limited to this. Thus, by providing the first resetting member35, when the pull rod31is moved from the fixing position to the releasing position, the first resetting member35(such as the spring) may push the lock catch34to move away from the retainer33by using its own elasticity function.

Preferably, as shown inFIG. 7, two retainers33and two lock catches34are provided, the two retainers33are bilaterally symmetrical with respect to a center of the pull block32, and the two lock catches34are also bilaterally symmetrical with respect to the center of the pull block32. Thus, the motion stability can be ensured effectively.

The handle2is pivotably connected with the machine body1via a pivoting shaft, and the pivoting shaft penetrates through the lock catch assembly. Specifically, for example, the pivoting shaft may include a threaded fastener and at least one nut362, and the nut362is connected to a free end of the threaded fastener. Herein, it should be noted that, when the threaded fastener is a bolt361, the free end is an end of the bolt361away from a head of the bolt361; when the threaded fastener is a stud, each end of the stud is the free end, and at this time, two nuts362are provided and respectively connected to two ends of the stud by threaded connection.

As shown inFIG. 7, two lock catches34, two retainers33and two first resetting members35are provided. During assembling, the retainer33, the first resetting member35(such as the spring), the lock catch34, the pull block32, the lock catch34, the first resetting member35(such as the spring) and the retainer33are sleeved onto the bolt361in turn from right to left via the free end of the bolt361, and finally the nut362is fastened to the free end of the bolt361, so that the respective parts fitted over the bolt361are prevented from falling off from the free end of the bolt361.

With reference toFIG. 7, in combination withFIG. 16, when the pull rod31is moved from the fixing position to the releasing position, the pull rod31is moved in a direction running away from the center of the machine body1(for example, in an upper direction inFIG. 7) and in a length direction of the handle2. Certainly, the pull rod31may be moved leftwards or rightwards (not shown in figures).

When the pull rod31is in the fixing position, the handle2is in the substantially upright state (such as a state inFIG. 3) with respect to the machine body1, so that it is convenient for the user to perform a normal cleaning (such as a floor cleaning) or a normal storage (for example, the vacuum cleaner100is placed in a corner of a room when not used). Herein, it should be noted that, “the handle2is in the substantially upright state with respect to the machine body1” may be construed as a meaning that a central axis of the handle2totally coincides with the central axis of the machine body1, or, as shown inFIGS. 3 and 17, due to specific configurations of the handle2and the machine body1, the central axis of the handle2may be slightly offset with respect to the central axis of the machine body1, and the offset is in a relatively small range, so that the user may hold a view that the handle2is coaxial with the machine body1when the user sees the vacuum cleaner100.

With reference toFIGS. 3-7, in combination withFIGS. 12 and 14, the pull rod31is provided with a pull rod button311, the pull rod button311may be in an upper portion of the handle2, the handle2may be provided with an opening21, and the pull rod button311extends out of the handle2through the opening21. Thus, by providing the pull rod button311, it is convenient for the user to pull the pull rod button311with a finger, and thus the pull rod31can be moved between the fixing position and the releasing position.

As shown inFIG. 8, the vacuum cleaner100further includes a second resetting member4, and the second resetting member4is disposed in the handle2. For example, the second resetting member4is compressed between the handle2and the pull block32and configured to constantly push the pull block32towards the fixing position. Optionally, the second resetting member4may be configured as a spring, but not limited to this. Thus, by providing the second resetting member4, when the pull rod31is in the releasing position and in the upright state, the pull block32may be moved to the fixing position under a function of the second resetting member4(such as the spring), so that the fixing protrusion321is fitted in fixing groove11without user's operations.

With the vacuum cleaner100(such as the chargeable push-rod vacuum cleaner) according to embodiments of the present disclosure, when the vacuum cleaner100is packaged, the handle2may be pivoted backwards, and the volume of the vacuum cleaner100is very small at this time, which saves the packaging space and the packaging cost; when the vacuum cleaner100is used, the handle2may be pivoted forwards, so that the user can clean low places such as the place under the table or bed without the user bending down; after the vacuum cleaner100is used, the handle2may be pivoted backwards, the volume of the vacuum cleaner100is very small at this time, and thus it is convenient for the vacuum cleaner100to be received in a cabinet and a small space is occupied.

A vacuum cleaner100(such as a changeable push-rod vacuum cleaner) according to another embodiment of the present disclosure will be described in the following with reference toFIGS. 18-24.

Specifically, as shown inFIGS. 18-24, a handle1is pivotably connected to a machine body1via a pivoting shaft22. With reference toFIGS. 7 and 21, the pivoting shaft22is located at an end of the handle1adjacent to the machine body1(for example, a lower end inFIG. 21), a separating plate23is provided at the above end of the handle1, and the pivoting shaft22penetrates through the separating plate23.

Each lock catch assembly2includes a retainer33and a lock catch34. The retainer33is disposed to the machine body1, the lock catch34is fitted over the pivoting shaft22, and the lock catch34is configured to be separably fitted with the retainer33. When the lock catch assembly2is in a locking position, the lock catch34is fitted with the retainer33, and the handle1cannot be rotated forwards or backwards with respect to the machine body1at this time. When the lock catch assembly2is in a pivoting position, the lock catch34is separated from the retainer33, and the handle1can be rotated between a first position and a second position with respect to the machine body1.

Specifically, the lock catch34is provided with a plurality of fitting teeth221arranged in a circumferential direction of the lock catch34and spaced from one another, the retainer33is provided with a plurality of sub fitting grooves331arranged in a circumferential direction of the retainer33and spaced from one another, the plurality of fitting teeth221are configured to be separably fitted with the plurality of sub fitting grooves331. When the fitting tooth221is fitted with the sub fitting groove331, the handle1may be fixed in the locking position; when the fitting tooth221is separated from the sub fitting groove331, the handle1may be pivoted forwards or backwards, so that the handle1is pivotable between the first position and the second position.

For example, with reference toFIGS. 23 and 24, the fitting tooth221has an outer contour of a substantial sector shape, the fitting tooth221also has a fitting hole therein, and a shape of a cross section of the fitting hole is substantially identical with the shape of the outer contour of the fitting tooth221, i.e., the fitting tooth221is a hollow structure, thus saving materials, reducing the weight and reducing the cost. A shape of a cross section of the sub fitting groove331is matched with that of the fitting tooth221.

Optionally, the retainer33may be connected to the machine body1via a snap or a threaded fastener, but not limited to this. For example, in an embodiment inFIG. 6, the retainer33has a mounting hole333, and the threaded fastener (such as a bolt) passes through the mounting hole333so as to connect the retainer33to the machine body1. Specifically, an internal thread may be formed in an inner wall of the mounting hole333, an external thread configured to fit with the internal thread may be formed in an outer wall of the threaded fastener, and thus a simple structure is provided and it is easy to assemble.

Furthermore, a side surface of the lock catch34adjacent to the retainer33is provided with a guiding post222, and a side surface of the retainer33adjacent to the lock catch34is provided with a guiding hole332. When the guiding post222extends into the guiding hole332, the plurality of fitting teeth221is fitted with the plurality of sub fitting grooves331respectively.

For example, with reference toFIG. 22, in combination withFIG. 24, an end of the guiding post222is connected with the lock catch34, and a free end of the guiding post222extends in a direction approaching the retainer33. The guiding post222has a cross sectional area gradually decreased in the direction approaching the retainer33. For example, in the embodiment inFIG. 24, the guiding post222is configured to have a substantial cone shape, the guiding hole332has a round cross section, and a cross sectional area of the guiding hole332is larger than a cross sectional area of the free end of the guiding post222. Thus, it is easy for the guiding post222to extend into the guiding hole332, so that it is convenient for the guiding post222to be fitted with the guiding hole332.

Specifically, the free end of the guiding post222extends beyond a side surface of the fitting tooth221adjacent to the retainer33. That is, only after the guiding post222firstly extends into the guiding hole332to be fitted with the guiding hole332, can the fitting tooth221be fitted with the sub fitting groove331. Thus, the fitting tooth221can be guided to fit with the sub fitting groove331by the guiding post222quickly and accurately.

Furthermore, a positioning member24is provided on an inner wall of the handle1, and the lock catch34is provided with a positioning groove344configured to fit with the positioning member24. For example, with reference toFIG. 21, in combination withFIGS. 22 and 24, the positioning member24is located at two sides of the separating plate23and in rear of the pivoting shaft22, and the positioning groove344is provided on a rear portion of the lock catch34. An end (for example, a rear end inFIG. 21) of the positioning member24is open, and the positioning member24has a cross section of a substantial trapezoid shape. During assembling, the positioning member24is fitted with the positioning groove344so as to prevent the lock catch34from rotating with respect to the handle1in the circumferential direction, so that a location of the handle1is stable.

Certainly, it may be understood that, the cross section of the positioning member24may have another shape, as long as the lock catch34can be prevented from rotating with respect to the handle1in the circumferential direction, which is not limited by the present disclosure.

Moreover, the vacuum cleaner100further includes a first resetting member35, and the first resetting member35is disposed at a side of the lock catch34away from the retainer33. The first resetting member35is configured to constantly push the lock catch34towards the retainer33. For example, in an embodiment inFIG. 22, the first resetting member35has a first end abutting against a separating plate23and a second end abutting against the lock catch34. Optionally, the first resetting member35may be configured as a spring, but not limited to this.

Furthermore, the vacuum cleaner100includes a pull rod31, and the pull rod31is movably disposed in the handle1. The pull rod31is fitted with the lock catch34so that the lock catch34is configured to be separably fitted with the retainer33. Specifically, the pull rod31is provided with a pull rod button311. For example, with reference toFIGS. 18, 19 and 21, the pull rod button311is disposed at an end of the pull rod31away from the machine body1, a through hole is provided in the handle1, and the pull rod button311extends out of the handle1through the through hole. Thus, it is convenient for the user to pull the pull rod button311with a finger.

For example, when the user pulls the pull rod button311with the finger, the pull rod31is moved along its length direction so as to drive the lock catch34to be separated from the retainer33. At this time, the handle1can be rotated between the first position and the second position. When the pull rod button311is released, the guiding post222extends into the guiding hole332, so as to guide the fitting tooth221to fit with the sub fitting groove331, and thus the handle1is in the locking position.

Optionally, as shown inFIGS. 22-24, the lock catch34is provided with a first fitting block345, and the first fitting block345has a first inclined surface343. The pull rod31is provided with a second fitting block324, and the second fitting block324has a second inclined surface322configured to fit with the first inclined surface343. The first fitting block345is formed on a front portion of the lock catch34, and the second fitting block324is disposed at a lower end of the pull rod31. The first inclined surface343is in parallel with the second inclined surface322, and a position limiting part is provided at an upper end of the first inclined surface343. Thus, it is convenient for the first inclined surface343to fit with the second inclined surface322, and the first inclined surface343and the second inclined surface322are prevented from moving with respect to each other in an upper and lower direction, so that locations of the lock catch34and the pull rod31are stable.

Specifically, two lock catch assemblies2are provided and bilaterally symmetrical with respect to a center of the pivoting shaft22. At this time, a cross section of the second fitting block324may have a substantial trapezoid shape, the second fitting block324has two second inclined surfaces322, and the second inclined surfaces322are located at right and left sides of the second fitting block324respectively. Optionally, the above two second inclined surfaces322are bilaterally symmetrical with respect to the center of the pivoting shaft22. Thus, two first inclined surfaces343of two first fitting blocks345may be fitted with the two second inclined surfaces322of the second fitting block324, so that the locations of the lock catch34and the pull rod31are more stable.

For example, when the pull rod31is moved along its length direction, with a fitting of the first inclined surface343and the second inclined surface322, the two lock catches34can be moved along an axial direction of the pivoting shaft22, so that the lock catch34is fitted with or separated from the retainer33.

Furthermore, one of the two lock catches34of the two lock catch assemblies2is provided with a circumferential position limiting protrusion346, and the other one thereof is provided with a circumferential position limiting groove347configured to fit with the circumferential position limiting protrusion346. For example, in an embodiment inFIG. 5, the lock catch34at a right side of the pivoting shaft22is provided with the circumferential position limiting protrusion346, the lock catch34at a left side of the pivoting shaft22is provided with the circumferential position limiting groove347, and both of the circumferential position limiting groove347and the circumferential position limiting protrusion346extend in a left and right direction. A cross sectional area of a left end of the circumferential position limiting protrusion346is less than a cross sectional area of a right end of the circumferential position limiting protrusion346, and thus it is convenient for the circumferential position limiting protrusion346to extend into the circumferential sub fitting grooves331quickly and accurately during assembling, so that it is ensured that the two lock catches34can rotate synchronously. The above two lock catches34are restricted onto the pivoting shaft22, so that locations of the lock catches34are stable, and thus the vacuum cleaner100is easy to assemble.

Furthermore, with reference toFIGS. 21 and 22, the pivoting shaft22is configured as a hollow structure, and the vacuum cleaner100further includes a bolt361and a nut362. During assembling, two first resetting members35may first be sleeved onto an outer surface of the pivoting shaft22from two ends of the pivoting shaft22, then the two lock catches34are sleeved onto the pivoting shaft22from left and right sides respectively and the circumferential position limiting protrusion346of one lock catch34is inserted into the circumferential position limiting groove347of the other lock catch34, subsequently two retainers33are sleeved onto the pivoting shaft22from the left and right sides respectively, finally the bolt361passes through the pivoting shaft22from left to right or from right to left, and the nut362is connected to the bolt361, so as to prevent the respective parts fitted over the pivoting shaft22from falling off from the end of the pivoting shaft22.

Specifically, as shown inFIGS. 18-21, the vacuum cleaner100includes the machine body1, the handle1, two lock catch assemblies2, two springs and the pull rod31. The handle1is pivotably connected to the machine body1via the pivoting shaft22. With reference toFIG. 21, the separating plate23is provided at the lower end of the handle1, the pivoting shaft22passes through the separating plate23, and the pivoting shaft22is configured as a hollow structure.

The handle1is pivotable between the first position and the second position. When the handle1is in the first position, the handle1is at the front side of the machine body1; when the handle1is in the second position, the handle1is at the rear side of the machine body1.

Each lock catch assembly2includes the retainer33and the lock catch34. The retainer33is disposed at the machine body1, the lock catch34is sleeved on the pivoting shaft22, and the lock catch34is configured to be separably fitted with the retainer33. When the lock catch assembly2is in the locking position, the lock catch34is fitted with the retainer33; when the lock catch assembly2is in the pivoting position, the lock catch34is separated from the retainer33.

The lock catch34is provided with the plurality of fitting teeth221arranged in the circumferential direction and spaced from one another, and the retainer33is provided with the plurality of sub fitting grooves331arranged in the circumferential direction and spaced from one another. When the fitting tooth221is fitted with the sub fitting groove331, the handle1is fixed in the locking position; when the fitting tooth221is separated from the sub fitting groove331, the handle1can be rotated forwards or backwards, so that the handle1is pivotable between the first position and the second position.

The fitting tooth221has an outer contour of a substantial sector shape, and the fitting tooth221has a fitting hole. A shape of the cross section of the fitting hole is substantially identical with the shape of the outer contour of the fitting tooth221, i.e., the fitting tooth221is a hollow structure, thus saving materials, reducing the weight and reducing the cost. A shape of a cross section of the sub fitting groove331is matched with that of the fitting tooth221.

The guiding post222is provided on the side surface of the lock catch34adjacent to the retainer33, and the guiding hole332is provided in the side surface of the retainer33adjacent to the lock catch34. The end surface of the free end of the guiding post222extends beyond the side surface of the fitting tooth221adjacent to the retainer33, and when the guiding post222extends into the guiding hole332, the plurality of fitting teeth221is fitted with the plurality of sub fitting grooves331. The guiding post222is configured to have a substantial cone shape, the guiding hole332has a round cross section, and a cross sectional area of the guiding hole332is larger than a cross sectional area of the free end of the guiding post222. Thus, it is easy for the guiding post222to extend into the guiding hole332, so that it is convenient for the guiding post222to be fitted with the guiding hole332.

The positioning member24is provided on an inner side of the handle1, and the lock catch34is provided with the positioning groove344configured to fit with the positioning member24. With reference toFIG. 4in combination withFIGS. 5 and 7, the positioning member24is located at left and right sides of the separating plate23and in rear of the pivoting shaft22, and the positioning groove344is provided on a rear portion of the lock catch34. A rear end of the positioning member24is open, and the positioning member24has a cross section of a substantial trapezoid shape. During assembling, the positioning member24is fitted with the positioning groove344so as to prevent the lock catch34from rotating with respect to the handle1in the circumferential direction, so that a location of the handle1is stable.

The spring has a first end abutting against the separating plate23and a second end abutting against the lock catch34. The pull rod31is movably disposed within the handle1, and the pull rod31is fitted with the lock catch34so that the lock catch34is configured to be separably fitted with the retainer33. Specifically, the pull rod31is provided with the pull rod button311. As shown inFIGS. 18, 19 and 21, the pull rod button311is disposed at the end of the pull rod31away from the machine body1, the handle1has the through hole therein, and the pull rod button311may extends out of the handle1through the through hole. Thus, it is convenient for the user to pull the pull rod button311by the finger.

For example, when the user pulls the pull rod button311with the finger, the pull rod31is moved along its length direction so as to drive the lock catch34to be separated from the retainer33. At this time, the handle1can be rotated between the first position and the second position. When the pull rod button311is released, the guiding post222extends into the guiding hole332, so as to guide the fitting tooth221to fit with the sub fitting groove331, and thus the handle1is in the locking position.

The lock catch34is provided with the first fitting block345, and the first fitting block345has the first inclined surface343. The pull rod31is provided with the second fitting block324, the second fitting block324has a cross section of a substantial trapezoid shape and further has two second inclined surfaces322, in which the two second inclined surfaces322are located at left and right sides of the second fitting block324. The first fitting block345is formed on the front portion of the lock catch34, the first inclined surface343is in parallel with the second inclined surface322, and the position limiting part is provided at the upper end of the first inclined surface343. Thus, it is convenient for the first inclined surface343to fit with the second inclined surface322, and the first inclined surface343and the second inclined surface322are prevented from moving with respect to each other in the upper and lower direction, so that the locations of the lock catch34and the pull rod31are stable.

For example, when the pull rod31is moved along its length direction, with the fitting of the first inclined surface343and the second inclined surface322, the two lock catches34can be moved along an axial direction of the pivoting shaft22, so that the lock catch34is fitted with or separated from the retainer33.

The lock catch34at the right side of the pivoting shaft22is provided with the circumferential position limiting protrusion346, the lock catch34at the left side of the pivoting shaft22is provided with the circumferential position limiting groove347, and both of the circumferential position limiting groove347and the circumferential position limiting protrusion346extend in the left and right direction. A cross sectional area of a left end of the circumferential position limiting protrusion346is less than a cross sectional area of a right end of the circumferential position limiting protrusion346, and thus it is convenient for the circumferential position limiting protrusion346to extend into the circumferential sub fitting grooves331quickly and accurately during assembling, so that the above two lock catches34are restricted onto the pivoting shaft22, the locations of the lock catches34are stable, and the vacuum cleaner100is easy to assemble.

Furthermore, with reference toFIGS. 21 and 22, the vacuum cleaner100further includes the bolt361and the nut362. During assembling, two springs may first be sleeved onto an outer surface of the pivoting shaft22from two ends of the pivoting shaft22, then the two lock catches34are sleeved onto the pivoting shaft22from left and right sides respectively and the circumferential position limiting protrusion346of one lock catch34is inserted into the circumferential position limiting groove347of the other lock catch34, subsequently two retainers33are sleeved onto the pivoting shaft22from the left and right sides respectively, finally the bolt361passes through the pivoting shaft22from left to right or from right to left, and the nut362is connected to the bolt361, so as to prevent the respective parts fitted over the pivoting shaft22from falling off from the end of the pivoting shaft22.

With the vacuum cleaner100according to embodiments of the present disclosure, by making the handle1pivotable between the first position and the second position, the vacuum cleaner100is easy to use and assemble.

As shown inFIGS. 25-38, the vacuum cleaner further includes a hand-held device400, and the hand-held device400includes a housing401, a dust cup402and an electric motor403.

The housing401has an air inlet4012and an air blowing port4014, and the air blowing port4014is disposed adjacent to the air inlet4012. The dust cup402is disposed in the housing401, and the dust cup402is connected with the air inlet4012. The electric motor403has a motor chamber4031therein, the motor chamber4031communicates with the dust cup402, and an airflow entering from the air inlet4012flows out of the air blowing port4014after passing through the dust cup402and the electric motor403.

For example, with reference toFIG. 1, in combination withFIGS. 8 and 10, the air inlet4012and the air blowing port4014each has a substantial rectangle shape, both the air inlet4012and the air blowing port4014are disposed at a front end of the housing401(for example, a left end inFIG. 1), and the air inlet4012is spaced apart from the air blowing port4014. When the electric motor403operates, a negative pressure is generated in the motor chamber4031, so that the external airflow with dust enters the dust cup402through the air inlet4012. Under a filtering function of the dust cup402, the dust is separated from the airflow and collected in dust cup402, and the cleaned airflow passes through the motor chamber4031and is blown out of the air blowing port4014. Herein, it should be noted that, direction “front” refers to a side of the hand-held device400away from the user, and an opposite direction of direction “front” is defined as direction “rear”, i.e., a side of the hand-held device400held by the user.

Optionally, the air blowing port4014is disposed above the air inlet4012, but not limited to this.

Optionally, the air blowing port4014has a cross sectional area less than a cross sectional area of the air inlet4012. Thus, by providing the air blowing port4014having a relatively small size, the airflow blown out of the air blowing port4014may flow towards a surface to be cleaned at a certain flowing speed, so that the dust on the surface to be cleaned can be blown up effectively, and by providing the air inlet4012having a relatively large size, the dust blown up can be sucked into the dust cup402as much as possible, thus resulting in a great cleaning effect and a high cleaning efficiency.

As shown inFIG. 1, the dust cup402is in front of the electric motor403. Certainly, the dust cup402may also be in rear of the electric motor403(not shown in figures), and the electric motor403is located between the air inlet4012and the dust cup402at this time, thus increasing structure diversity of the hand-held device400. It may be understood that, specific locations of the dust cup402and the electric motor403can be adaptably adjusted according to actual requirements, which is not limited by the present disclosure.

When the hand-held device400is used to clean a structure having a narrow space such as a keyboard, the airflow blown out of the air blowing port4014may enter a narrow gap in the keyboard and blows up the dust in the narrow gap. Under the function of the negative pressure in the motor chamber4031, the dust blown up may be sucked into the housing401through the air inlet4012and collected in the dust cup402. Thus, it is excellently convenient to clean the structure having the narrow space such as the keyboard, saving both time and labor and resulting in a good cleaning effect.

With the hand-held device400according to embodiments of the present disclosure, by disposing the air blowing port4014and arranging the air blowing port4014adjacent to the air inlet4012, it is excellently convenient to clean the narrow gap, and the good cleaning effect is provided.

According to an embodiment of the present disclosure, as shown inFIG. 1, the air blowing port4014obliquely extends towards the air inlet4012. At this time, a central axis of the air blowing port4014intersects with that of the air inlet4012, and an intersection point thereof is outside the housing401. Preferably, the intersection point is on the surface to be cleaned (such as a surface of the keyboard, on which there is the dust). Therefore, the dust blown up by the air blowing port4014can be better sucked into the dust cup402by the air inlet4012, and thus a better dust collecting effect can be achieved.

According to an embodiment of the present disclosure, an air inlet pipe4011is provided in the housing401. For example, with reference toFIG. 1, the air inlet pipe4011extends horizontally, and an end (for example, a left end inFIG. 1, i.e., a free end) of the air inlet pipe4011extends out of the housing401. The air inlet4012is formed at the free end of the air inlet pipe4011, and the air inlet4012is at a front side of the air blowing port4014.

Optionally, an end surface of the free end of the air inlet pipe4011obliquely extends in a direction running away from the air blowing port4014along a flowing direction of the airflow passing through the air inlet pipe4011. For example, as shown inFIG. 1, the end surface of the left end of the air inlet pipe4011obliquely extends downwards along a direction from left to right. Thus, the airflow blown out of the air blowing port4014can be better blown to the surface to be cleaned, instead of returning to the dust cup402through the air inlet4012directly.

Furthermore, the end surface of the above free end of the air inlet pipe4011is configured as an inclined flat surface, and thus it is easy to produce at a low cost. Certainly, the end surface of the above free end of the air inlet pipe4011may also be configured as an inclined curved surface (not shown in figures), for example, as an inclined arc surface recessed towards a center of the housing401.

According to an embodiment of the present disclosure, an air blowing channel4013is disposed in the housing401, and the air blowing channel4013has a first end (for example, a right end inFIG. 1) communicating with the motor chamber4031and a second end (for example, a left end inFIG. 1) provided with the air blowing port4014. Thus, the airflow in the motor chamber4031can be conveyed to the air blowing port4014through the air blowing channel4013.

For example, as shown inFIG. 1, the air blowing channel4013is in a top portion of the housing401, and extends in a front and rear direction (i.e., the right and left direction inFIG. 1). A rear end (i.e., the right end) of the air blowing channel4013communicates with the motor chamber4031, and the air blowing port4014is formed at a front end (i.e., the left end) of the air blowing channel4013and located above the air inlet4012. The air blowing channel4013obliquely extends downwards in a direction from rear to front, and at this time, a distance between the air blowing channel4013and the air inlet4012gradually decreases along the flowing direction of the airflow passing through the air blowing channel4013, so that the air flow blown out of the air blowing port4014can be blown to the surface to be cleaned opposite to the air inlet4012, and thus the dust blown up from the surface to be cleaned can be well sucked into the dust cup402through the air inlet4012.

Optionally, the air blowing channel4013extends in the front and rear direction, as shown inFIG. 1, and thus, the airflow in the motor chamber4031can be better blown to the air blowing port4014through the linear air blowing channel4013, so that the dust on the surface to be cleaned can be better blown up. Certainly, the air blowing channel4013may also extend in a curve (such as, a wavy line or an arc line) along the front and rear direction.

Furthermore, the air blowing channel4013preferably has a cross sectional area gradually decreased along the flowing direction of the airflow passing through the air blowing channel4013, as shown inFIGS. 8 and 10. Thus, when the airflow flows through the air blowing port4014, a flowing speed of the airflow can be improved, so that the airflow can flow to the surface to be cleaned at a higher flowing speed, so as to blow up the dust on the surface to be cleaned effectively.

It may be understood that, a specific location, shape and size of the air blowing channel4013may be set according to actual requirements, so as to meet the actual requirements better.

Optionally, respective pipes of the hand-held device400are connected with one another by ultrasonic soldering, in which “respective pipes” refer to respective independent pipes through which the airflow passes in the flowing direction of its own. For example, the air inlet pipe4011is connected with an air intake channel4022of a first cyclone of the dust cup402by ultrasonic soldering. Thus, the method of using the ultrasonic soldering has a fast soldering speed, a high soldering strength, and a good leakproofness.

According to an embodiment of the present disclosure, the housing401has an air outlet4032. For example, in an embodiment shown inFIG. 1, the air outlet4032is located in a side of the electric motor403away from the air inlet4012, and the air outlet4032communicates with the motor chamber4031, so that the clean airflow may pass through the motor chamber4031and be discharged out of the air outlet4032, after the airflow with dust entering through the air inlet4102is filtered in the dust cup402.

The airflow entering through the air inlet4012flows out of at least one of the air outlet4032and the air blowing port4014after passing through the dust cup402and the electric motor403. That is, the airflow entering through the air inlet4012may only flow out of the air outlet4032or the air blowing port4014, and may also flow out of both the air outlet4032and the air blowing port4014simultaneously. For example, the airflow entering through the air inlet4012may switchably flow out of the at least one of the air outlet4032and the air blowing port4014by a switching mechanism404after passing through the dust cup402and the electric motor403.

For example, when the hand-held device400operates normally (for example, cleaning a place having a large space, such as a bed sheet and a curtain), it is not required for the air blowing port4014to blow up the dust on the surface to be cleaned, and the air blowing port4014may be closed at this time. Under the function of the negative pressure in the electric motor403, after the dust on the surface to be cleaned is sucked into the air inlet4012and filtered by the dust cup402, the dust is collected in the dust cup402, and the clean airflow passes through the motor chamber4031and is discharged out of the air outlet4032.

When the hand-held device400is used to clean the structure having the narrow space such as the keyboard, the air blowing port4014may communicate with the motor chamber4031, so that the airflow blown out of the air blowing port4014can be blown to the narrow gap of the keyboard and blow up the dust in the narrow gap. Under the function of the negative pressure in the electric motor403, the dust blown up is sucked into the dust cup402through the air inlet4012, then the dust cup402filters the airflow with dust sucked thereinto, the dust filtered out of the airflow is collected in the dust cup402, and the clean airflow flows through the motor chamber4031and further to air blowing port4014so as to continue blowing up the dust on the keyboard. At this time, the air outlet4032may be closed completely. Certainly, the air outlet4032also may be opened slightly, but it should be ensured that a most part of the airflow flows to the air blowing port4014.

According to an embodiment of the present disclosure, the air blowing port4014is communicatable with the motor chamber4031, and a communication of the air blowing port4014and the motor chamber4031is switchable. When the air blowing port4014communicates with the motor chamber4031, the airflow in the motor chamber4031may flow to the air blowing port4014. When the air blowing port4014is partitioned from the motor chamber4031, the airflow in the motor chamber4031cannot flow to the air blowing port4014.

For example, the air blowing port4014is communicatable with the motor chamber4031via the switching mechanism404, and the communication of the air blowing port4014and the motor chamber4031is switchable by the switching mechanism404. The switching mechanism404is configured to be movable between a communicating position for communicating the air blowing port4014with the motor chamber4031and a partitioning position for partitioning the air blowing port4014from the motor chamber4031. When the switching mechanism404is in the communicating position, the air blowing port4014communicates with the motor chamber4031, the clean airflow may be blown onto the surface to be cleaned through the air blowing port4014, and at this time, the hand-held device400can be used to clean the structure having the narrow space such as the keyboard. When the switching mechanism404is in the partitioning position, the air blowing port4014is partitioned from the motor chamber4031, and thus the airflow in the motor chamber4031cannot be blown out of the air blowing port4014.

When the switching mechanism404is in the communicating position, the switching mechanism404closes or semi-closes the air outlet4032. The switching mechanism404closes the air outlet4032, i.e., the switching mechanism404closes the air outlet4032completely, and the airflow in the motor chamber4031cannot flow out of the air outlet4032; the switching mechanism404semi-closes the air outlet4032, i.e., a part of the airflow in the motor chamber4031may flow out of air outlet4032. Herein, it should be noted that, “semi-close” may be construed as a meaning that the switching mechanism404closes a part of the air outlet4032, or that the switching mechanism404is close to the part of the air outlet4032. At this time, most of the airflow in the motor chamber4031is blown out of the air blowing port4014, and only a small part of the airflow flows out of the air outlet4032. When the switching mechanism404is in the partitioning position, the air outlet4032communicates with the motor chamber4031, so that the surface to be cleaned can be cleaned continuously when the hand-held device400operates normally.

Specifically, as shown inFIGS. 1-3, the switching mechanism404includes a push plate4041. The push plate4041is movably disposed in the housing401and has a communicating opening4042. When the switching mechanism404is in the communicating position, the communicating opening4042communicates the air blowing port4014with the motor chamber4031.

For example, with reference toFIG. 1, in combination withFIGS. 2 and 3, the push plate4041may extend in the rear and front direction. For example, the push plate4041horizontally extends in the front and rear direction, so that the push plate4041is horizontally movable in the front and rear direction. The rear end of the air blowing channel4013is provided with an opening, and the opening is opposed to an opening of the motor chamber4031in an upper and lower direction, in which the opening of the motor chamber4031is configured to communicate with the air blowing channel4013. At this time, the push plate4041is located between the opening of the rear end of the air blowing channel4013and the above opening of the motor chamber4031. When the hand-held device400operates normally, the switching mechanism404is in the partitioning position, the communicating opening4042is staggered with the air blowing port4014and the motor chamber4031, the push plate4041closes the above opening of the motor chamber4031, and thus the push plate4041partitions the air blowing port4014from the motor chamber4031, so that the airflow in the motor chamber4031will not be blown out of the air blowing port4014(as shown inFIG. 2). When it is required to clean the structure having the narrow space such as the keyboard, the push plate4041may be moved, so that the communicating opening4042, the opening of the rear end of the air blowing channel4013and the above opening of the motor chamber4031are opposed to one another in the upper and lower direction, and thus the airflow in the motor chamber4031may enter the air blowing channel4013through the communicating opening4042and be blown out of the blowing port4014.

The air outlet4032is formed in the motor chamber4031and located below the push plate4041. As shown inFIGS. 2 and 3, the push plate4041is provided with a closing plate4043, and the closing plate4043vertically extends downwards from a lower surface of the push plate4041. The closing plate4043is opposed to the air outlet4032, and the closing plate4043closes or semi-closes the air outlet4032when the switching mechanism404is in the communicating position. Furthermore, when the closing plate4043semi-closes the air outlet4032, a gap is provided between the closing plate4043and the air outlet4032, or the closing plate4043closes a part of the air outlet4032. Thus, the producing accuracy of the closing plate4043is reduced and the cost is saved while the air blowing effect is ensured. Optionally, the closing plate4043is configured to have a thickness gradually increased from bottom to top, and thus the structure strength of the closing plate4043is ensured effectively.

Furthermore, the switching mechanism404further includes a spring4045, the spring4045is disposed between the housing401and the push plate4041, and the spring4045is configured to constantly push the push plate4041towards the partitioning position. Optionally, the spring4045is configured as a spring. For example, as shown inFIGS. 2 and 3, the spring is disposed between the electric motor403and the closing plate4043and located at a front side of the closing plate4043, and the spring pushes the closing plate4043backwards, so that the push plate4041is constantly held in the partitioning position for partitioning the air blowing port4014from the motor chamber4031. That is, the hand-held device400is often in a normal operation state.

In order to make the push plate4041move in the front and rear direction stably, each of the electric motor403and the closing plate4043is provided with a positioning post4044, and two ends of the spring are sleeved onto corresponding positioning posts4044respectively. Optionally, a free end of the positioning post4044is configured to have a shape of a circular truncated cone, a cone or a semisphere, so as to mount the spring easily.

As shown inFIGS. 1-3, the push plate4041is provided with a push button4046, and the push button4046is disposed on an upper surface of the push plate4041and is exposed out of an upper surface of the housing401. Thus, the user can move the push plate4041between the communicating position and the partitioning position by pushing the push button4046. Optionally, the push button4046is configured as a hollow structure, so as to save materials and reduce cost.

The hand-held device400is in the partitioning position shown inFIG. 2in a normal state. At this time, the push plate4041partitions the air blowing port4014from the motor chamber4031, the closing plate4043opens the air outlet4032, and the push plate4041is kept in this position under an elastic force of the spring. When it is needed to clean the structure having the narrow space such as the keyboard, the push button4046may be pushed forwards so as to move the push plate4041forwards. When the push plate4041is moved to the communicating position, the communicating opening4042communicates the motor chamber4031with the air blowing channel4013, and the closing plate4043is moved forwards to form a certain gap with respect to the air outlet4032, so that most of the airflow in the motor chamber4031is blown out of the air blowing port4014through the air blowing channel4013, thus cleaning the narrow gap well, and a small part of the airflow flows out of the air outlet4032through the gap between the air outlet4032and the closing plate4043, as shown inFIG. 3.

Therefore, by providing the switching mechanism404, in a case of ensuring the normal operation of the hand-held device400, the airflow discharged out of the air outlet4032can be utilized effectively, thus further improving the cleaning effect of the hand-held device400.

According to an embodiment of the present disclosure, as shown inFIGS. 4-7, the dust cup402includes: a cup body, a first cyclone, a cyclone assembly and a filter. The first cyclone, the cyclone assembly and the filter each is disposed in the cup body, the first cyclone has an air intake channel4022, and the air intake channel4022has an air intake port4023and an air outtake port4024.

With reference toFIGS. 5-7, the cyclone assembly includes a plurality of second cyclones22, and the plurality of second cyclones22is arranged in parallel along a circumferential direction of the first cyclone, in which two of the plurality of second cyclones22define a guiding channel425therebetween, the guiding channel425communicates with the air outtake port4024and guides the airflow to an outer periphery of the cyclone assembly along a tangent line of a circumferential wall of the second cyclone22adjacent to the guiding channel425, and a first cyclone separation space A configured for purification and separation of the airflow is formed between an outer circumferential wall of the cyclone assembly and an inner wall of the cup body. In this way, when the airflow to be purified enters through the air intake channel4022and is tangentially guided to the first cyclone separation space A through the guiding channel425, the airflow may be separated for a first time, so that the particle or pollutant having a large size can be separated from the airflow and fall down. Specifically, the air intake channel4022has a first end communicating with the air inlet4012and a second end communicating with a first end of the guiding channel425, a second end of the guiding channel425communicates with the first cyclone separation space A, and the airflow guided out by the guiding channel425enters the first cyclone separation space A along a tangential direction for the purification and separation of the airflow within the first cyclone separation space A.

As shown inFIG. 6, each second cyclone22has an air inducing notch4224so that the airflow can enter the second cyclone22along a tangential direction of the second cyclone22. Each second cyclone22has an air guiding pipe221therein, and the air guiding pipe221is spaced apart from an inner circumferential wall of the second cyclone22. The air guiding pipe221has an air guiding inlet2211and an air guiding outlet2212, and the air guiding inlet2211communicates with the air inducing notch4224, so that the airflow after the primary separation may enter the plurality of second cyclones22through the air inducing notches4224, and may be discharged out of the air guiding pipe221after being further purified and separated in the second cyclones22. The filter is disposed along the outer periphery of the cyclone assembly, so that the airflow at the outer periphery of the cyclone assembly can tangentially enter the second cyclone22through the filter and the air inducing notch4224(the second cyclone22defines a second cyclone separation space B therein). That is, the airflow is further purified and separated in the second cyclone separation space B. Thus, the airflow is purified and separated for the first time in the first cyclone separation space A, and the airflow after the primary separation passes through the filter and further enters the plurality of second cyclones22through the air inducing notches4224, so as to be purified and separated for a second time. In the second cyclone separation space B, the airflow rotates around the air guiding pipe221, the dust separated from the airflow drops down, and the airflow after the further purification enters the air guiding pipe221through the air guiding inlet2211and is discharged out of the second cyclone22through the air guiding outlet2212.

Since the plurality of second cyclones22is arranged in parallel along the circumferential direction surrounding a longitudinal axis of the first cyclone, the airflow after the primary separation can be dispersed and parallelly enter the plurality of second cyclones22, so as to go through the cyclone separations in the plurality of second cyclones22respectively.

Furthermore, an outlet filter is provided between the dust cup402and the electric motor403. As shown inFIG. 1, the outlet filter is located at an outlet of the dust cup402, downstream of the plurality of second cyclones22. Thus, the airflow purified and separated again by the plurality of second cyclones22can be further purified by the outlet filter. Herein, it should be noted that, “downstream” may be construed as being downstream of the flowing direction of the airflow flowing through the dust cup402.

Optionally, the filter may be configured as a high efficiency particulate air (HEPA) filter or a filter cotton.

Thus, by using the cyclone separation technology to purify and separate the airflow with dust entering the dust cup402, the flowing smoothness of the airflow in the dust cup402is effectively ensured. Moreover, by disposing the first cyclone, the filter and the plurality of second cyclones22and performing a two-stage cyclone separation with the first cyclone and the plurality of second cyclones22, the large particles or pollutants are first filtered out of the airflow by the first cyclone and the filter, then most small particles (such as dust particles) are filtered out of the airflow after the primary separation by the plurality of second cyclones22, and finally a little fine dust is filtered out of the airflow by the outlet filter, thus resulting in a great dust-air separation effect.

The filter is configured to purify the airflow when the airflow flows to the second cyclone separation space B from the first cyclone separation space A. Preferably, the filter is detachably disposed at the outer periphery side of the cyclone assembly, so that the filter can be disassembled after being used for a period and thus it is convenient to clean the filter.

By providing the air guiding pipe221in the second cyclone22, a period of time of the airflow staying in the second cyclone22is prolonged, so that the airflow to be cleaned in the second cyclone22can be cleaned better.

Optionally, as shown inFIGS. 5 and 6, the air guiding pipe221is eccentrically disposed with respect to the second cyclone22. That is, a central axis of the air guiding pipe221is offset with respect to a central axis of the second cyclone22, and the central axis of the air guiding pipe221does not coincide with the central axis of the second cyclone22. In other words, an outer circumferential wall of air guiding pipe221is away from a part of an inner circumferential wall of the second cyclone22, but is close to another part of the inner circumferential wall of the second cyclone22, so that the airflow after the primary separation may first tangentially enter the part of the inner circumferential wall of the second cyclone22through the air inducing notch4224, in which the part of the inner circumferential wall of the second cyclone22is away from the outer circumferential wall of air guiding pipe221, then rotates around the air guiding pipe221to the other part of the inner circumferential wall of the second cyclone22, in which the other part of the inner circumferential wall of the second cyclone22is close to outer circumferential wall of air guiding pipe221, and thus it is ensured that the airflow entering the second cyclone22rotates in a same direction (for example, a counter-clockwise direction shown inFIG. 6) so as to be purified and separated.

For example, as shown inFIGS. 5 and 6, the air guiding pipe221is configured as a circular pipe and extends in a vertical direction. The air guiding pipe221is located in an upper portion of the second cyclone22, and has an upper end connected with a top wall of the second cyclone22and provided with the air guiding outlet2212, and a lower end provided with the air guiding inlet2211. The air inducing notch4224is located at the upper portion of the second cyclone22. The airflow entering the second cyclone22starts to rotate around an upper end of the air guiding pipe221and gradually moves downwards (as shown inFIG. 5), so as to generate a rotating and descending airflow, the rotating and descending airflow changes into an ascending airflow when descending to the lower end of the air guiding pipe221, then the dust is separated from the airflow and drops down, and the clean airflow enters the air guiding pipe221and is discharged out of the air guiding outlet2212at the upper end of the air guiding pipe221.

Furthermore, as shown inFIG. 6, the air guiding pipe221has a partition plate424therein, and the partition plate424separates interior of the air guiding pipe221into two chambers. Thus, by disposing the partition plate424, the dust can further be separated from the airflow entering the air guiding pipe221. Optionally, the partition plate424is vertically or obliquely disposed in the air guiding pipe221.

A rotation direction of the airflow at the outer periphery of the cyclone assembly preferably is the same with that of the airflow in the second cyclone22. As shown inFIG. 6, the airflow at the outer periphery of the cyclone assembly and the airflow in the second cyclone22after subsequently entering the second cyclone22both rotate in the counter-clockwise direction. Thus, the airflow in the dust cup402can be prevented from being disordered, so as to ensure a great separating effect of the dust cup402.

As shown inFIG. 6, the filter is arranged around the cyclone assembly and has a relief opening therein, and the relief opening is opposed to the guiding channel425. Thus, the airflow passing through the guiding channel425may directly flow towards the outer periphery of the cyclone assembly through the relief opening, however the airflow needs to pass through the filter first before flowing into the second cyclone22, so that the smoothness of the airflow flowing is ensured while the filtering effect is ensured. In some embodiments, the filter may have a substantial C shape.

Certainly, a plurality of filters may be provided and arranged to be corresponding to the air inducing notches4224of the plurality of second cyclones22. Each filter corresponds to one or more air inducing notches4224, and thus the airflow after the primary separation in the first cyclone separation space A tangentially enters the second cyclone22through the air inducing notch4224directly to be separated after passing through the filter, so that the large particles are first filtered out of the airflow before the airflow is separated again in the second cyclone22, thereby further improving the separating and purifying effect.

Optionally, the above filter may be configured as a filter net (not shown in figures). Certainly, the filter may also be configured as an insert having filtering holes. Meshes of the filter net or the filtering holes may be distributed in a form of multiple layers of circular rings, or homogeneously distributed in multiple rows and columns, in order for a homogeneous filtering. In addition, sizes of the meshes of the filter net or the filtering holes are not limited. A relatively small size results in the great filtering effect, and a relatively large size causes high air exhaust efficiency and a low energy loss of the electric motor403. In actual applications, an appropriate size may be selected according to a requirement for performance of a product.

As shown inFIG. 6, a connecting wall4226is connected to a first side of the air inducing notch4224of each second cyclone22, in which the connecting wall4226is tangent to a side wall of the second cyclone22, and an extending part4227extends out from a second side of the air inducing notch4224of the second cyclone22, and the extending part4227and the connecting wall4226define a tangential air inducing channel423therebetween. Optionally, the connecting wall4226on the second cyclone22extends to and is tangentially connected to the side wall of the adjacent second cyclone22, in which the extending part4227extends towards a corresponding connecting wall4226along the flowing direction of the airflow passing through the air inducing channel423. At this time, the air inducing channel423is configured to have a width gradually decreased along the flowing direction of the airflow passing through the air inducing channel423. Thus, the airflow at the outer periphery of the cyclone assembly may smoothly enter the second cyclone22through the air inducing channel423along the tangential direction of the second cyclone22, so as to go through the cyclone separation, thus providing a great separating effect.

As shown inFIGS. 5 and 7, an inner wall of an end of the air intake channel4022has a guiding surface configured to guide the airflow in the air intake channel4022to the guiding channel425, in which the air outtake port4024is provided in the end of the air intake channel4022. Thus, the airflow passing through the air intake channel4022can be well guided to the guiding channel425under a function of the guiding surface. For example, with reference toFIGS. 5 and 7, the air intake channel4022is defined by an air intake pipe4021, and the air intake port4023and the air outtake port4024of the air intake channel4022are defined by upper and lower ends of the air intake pipe4021respectively. The air intake pipe4021includes a horizontal pipe segment and a vertical pipe segment connected with each other, a free end (for example, a left end inFIG. 5) of the horizontal pipe segment communicates with the air inlet4012, a free end (for example, an upper end inFIG. 5) of the vertical pipe segment communicates with the guiding channel425, and the guiding surface is located at a top wall of the free end of the vertical pipe segment, so that the airflow can be well guided to the guiding channel425under the function of the guiding surface when flowing by the guiding surface. For example, the guiding surface preferably is configured as an arc surface.

Optionally, as shown inFIG. 6, the guiding channel425is configured to have a width gradually increased along the flowing direction of the airflow. Thus, the airflow flowing through the guiding channel425can be well guided to the outer periphery of the cyclone assembly under a guiding function of the guiding channel425.

Optionally, each second cyclone22has an opening4225in a bottom thereof, the small particles separated by the second cyclone22may drop down to a place below the second cyclone22through the opening4225of the second cyclone22, so that it is convenient to collect the small particles and the separated small particles cannot be blown up when the airflow is going through the cyclone separation in the second cyclone22.

Respective parts of the dust cup402may be connected with one another by ultrasonic soldering.

Thus, by using the above dust cup402, the dust-air separation function of the dust cup402is improved, most dust is thrown out of the airflow before the airflow flows to the outlet filter, and only a little dust enters the outlet filter, so that the outlet filter can be prevented from being blocked by a great deal of dust, and thus a cleaning cycle of the outlet filter is deceased, a working life of the outlet filter is improved, and meanwhile a burden of the electric motor403is also reduced.

According to an embodiment of the present disclosure, a bottom of the first cyclone separation space A is opened to form an opening, and each second cyclone22has the above opening4225in the bottom thereof. The dust cup402has a dust outlet in a bottom thereof, and the dust outlet is constituted by the opening in the bottom of the first cyclone separation space A and the opening4225in the bottom of the second cyclone22together.

As shown inFIGS. 8-12, the hand-held device400further includes an ash pouring plate405, and the ash pouring plate405is disposed at a bottom of the housing401. The ash pouring plate405is configured to be movable between an open position for opening the dust outlet and a closed position for closing the dust outlet. When the ash pouring plate405is in the open position, the dirt and dust in the dust cup402can be discharged through the dust outlet (as shown inFIGS. 8 and 9); when the ash pouring plate405is in the closed position, the ash pouring plate405closes the bottom of the dust cup402to ensure the dust cup402to work normally (as shown inFIG. 12).

Thus, by providing the ash pouring plate405, the dirt and dust in the dust cup402can be poured out easily, thus greatly simplifying an ash pouring procedure.

Specifically, with reference toFIGS. 8-12, a first end of the ash pouring plate405is pivotably connected to the housing401so that the ash pouring plate405is rotatable between the open position and the closed position, and a second end of the ash pouring plate405is configured to be separably fitted with the housing401. For example, the ash pouring plate405extends in the front and rear direction, a rear end of the ash pouring plate405is pivotably connected to the housing401via a pivoting rod4051, and a front end of the ash pouring plate405is configured to be separably fitted with the housing401.

As shown inFIGS. 9 and 10, the second end of the ash pouring plate405is configured to be separably fitted with the housing401via at least one fitting structure. The fitting structure includes a first fitting member and a second fitting member, the first fitting member is disposed at the second end of the ash pouring plate405, and the second fitting member is disposed at the housing401. When the ash pouring plate405is in the open position, the first fitting member is separated from the second fitting member; when the ash pouring plate405is in the closed position, the first fitting member is fitted with the second fitting member. Optionally, the first fitting member and the second fitting member are configured as snaps407configured to be buckled with each other.

When the above two snaps407are buckled with each other, the ash pouring plate405is kept in the closed position, so that the hand-held device400can work normally, the dust cup402can purify and separate the airflow to be cleaned entering through the air inlet4012, and the dirt and dust separated from the airflow are collected at the bottom of the dust cup402. When the hand-held device400finishes operating, the two snaps407are separated from each other, so that the ash pouring plate405can be rotated to the open position from the closed position, and the dirt and dust collected in the dust cup402can directly fall out of the housing401through the dust outlet.

Furthermore, as shown inFIGS. 8-12, the hand-held device400further includes a press button406, the press button406is disposed in housing401, and the second fitting member is disposed on the press button406. When the press button406is pressed down, the second fitting member moves away from the first fitting member so as to be separated from the first fitting member. For example, with reference toFIG. 10, an extending plate horizontally extending towards a center of the housing401is provided on an inner surface (i.e., a surface adjacent to the center of the housing401) of the press button406, and the second fitting member (such as the snap407) is disposed at a free end of the extending plate. During a process of pressing down the press button406, the second fitting member moves towards the center of the housing401and finally is separated from the first fitting member, so that the front end of the ash pouring plate405is rotated downwards due to its own gravity to open the dust outlet.

As shown inFIG. 10, an elastic element408is provided between the press button406and the dust cup402and configured to constantly push the press button406in a direction running away from the center of the housing401. Optionally, the elastic element408is configured as a spring. Therefore, when the ash pouring plate405is in the closed position, under an elastic force of the elastic element408(such as the spring), the first fitting member is always fitted with the second fitting member, so that the ash pouring plate405is kept in the closed position.

Optionally, two fitting structures are provided, and the two fitting structures are bilaterally symmetrical. Thus, the connection reliability of the ash pouring plate405can be ensured efficiently.

Furthermore, a sealing member is disposed between the ash pouring plate405and the dust outlet so as to seal a gap between the ash pouring plate405and the dust outlet. Thus, by providing the sealing member, the leakproofness at the dust outlet can be further ensured.

According to an embodiment of the present disclosure, as shown inFIG. 13, the above hand-held device400may be used with a floor brush200, such as a pet brush. In following descriptions of the present disclosure, the pet brush is taken as an example to illustrate the floor brush200. Certainly, those skilled in the related art may understand that, the floor brush200may also be another type of floor brush200, but not limited to the pet brush.

Specifically, the floor brush200(such as the pet brush) has a floor brush inlet201, a floor brush outlet203and a floor brush opening202. The floor brush inlet201communicates with the air blowing port4014of the hand-held device400, the floor brush outlet203communicates with the air inlet4012of the hand-held device400, the floor brush opening202is located at a side of the floor brush200away from the housing401, and thus the airflow blown out of the air blowing port4014first flows through the floor brush inlet201to the floor brush opening202, and then flows through the floor brush outlet203to the air inlet4012. In other words, the airflow blown out of the air blowing port4014may first flow through the floor brush inlet201and the floor brush opening202in turn to a place in which hair of a pet (such as a dog and a cat) is, so as to blow up the hair and dust falling off from the skin, and then the airflow passes through the floor brush opening202and the floor brush outlet203and enters the hand-held device400through the air inlet4012. Optionally, the floor brush200is detachably connected with the housing401.

Thus, by using the above hand-held device400with the floor brush200such as the pet brush, the surface to be cleaned, such as the hair and skin of the pet, can be cleaned well, and thus a great cleaning effect can be achieved.

The floor brush200has an air intake passage, the floor brush inlet201is formed at a free end of the air intake passage, and the air intake passage has a cross sectional area gradually decreased along the flowing direction of the airflow. Thus, the airflow can flow to the surface to be cleaned at a certain flowing speed, so that the dust on the surface to be cleaned can be blown up better.

As shown inFIGS. 1 and 13, the air inlet4012is formed at a free end (for example, a left end inFIGS. 1 and 13) of the air inlet pipe4011, the air inlet pipe4011extends out of the housing401, and the free end of the air inlet pipe4011is connected with the floor brush outlet203by inserting connection. Thus, by means of inserting connection, it is convenient for mounting, and a high assembling efficiency is provided.

With reference toFIG. 13, a baffle204is provided at a side of the floor brush opening202, in which the side of the floor brush opening202is close to or at the air blowing port4014. Thus, by providing the baffle204, the baffle204has a certain function of guiding the airflow blown out of the air blowing port4014, so that the airflow blown out of the air blowing port4014can blow up the dust on the surface to be cleaned better.

Furthermore, the rest of the floor brush opening202is provided with bristles205, except the side of the floor brush opening202close to or at the air blowing port4014. Thus, by providing the bristles205, when the surface to be cleaned (such as the hair and skin of the pet) is cleaned, the hair of the pet can be combed.

The hand-held device400according to embodiments of the present disclosure has a better cleaning effect for the surface to be cleaned.

Other compositions (such a dust separating device) of the vacuum cleaner100according to embodiments of the present disclosure are known to those skilled in the related art, and will not be detailed herein.