CN213588152U

CN213588152U - Cleaning head and handheld dust collector

Info

Publication number: CN213588152U
Application number: CN202021855759.5U
Authority: CN
Inventors: 金鹏; 周航标; 罗莉
Original assignee: Zhuichuang Technology Suzhou Co Ltd
Current assignee: Dreame Technology Suzhou Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-07-02
Anticipated expiration: 2030-08-31

Abstract

The application relates to a cleaning head comprising: the cleaning head shell with the accommodating space is limited, the roller is arranged in the accommodating space, and the rotating mechanism is connected with the cleaning head shell in a rotating mode and comprises a rotating shaft, the cleaning head is provided with a wheel set used for walking, at least part of connecting lines between the wheel set and the rotating shaft are basically overlapped with vertical lines of the rotating shaft, the layout is reasonable, in the dust collection process, the cleaning head is always kept attached to the ground, and the dust collection efficiency is improved.

Description

Cleaning head and handheld dust collector

Technical Field

The utility model belongs to the technical field of domestic appliance and specifically relates to a cleaning head and handheld dust catcher is related to.

Background

With the continuous improvement of the living standard of people, the dust collector as a tool for sanitary cleaning becomes an essential electric appliance in the daily life field of people. The wireless handheld dust collector has the advantages of small size, convenience in carrying and use and the like due to the battery, and is more suitable for cleaning smaller space, so that the wireless handheld dust collector is popular. The working head of the existing handheld dust collector for collecting dust is not properly arranged, and the front end of the working head is easy to tilt in the dust collecting process, so that the dust collecting efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rationally distributed and efficient cleaning head of dust absorption.

In order to achieve the above purpose, the utility model provides a following technical scheme: a cleaning head, the cleaning head comprising:

a cleaning head housing defining an accommodating space;

the roller is arranged in the accommodating space;

with the slewing mechanism that the cleaning head casing rotates to be connected, slewing mechanism includes the pivot, the cleaning head has the wheelset that is used for the walking, at least part the wheelset with line between the pivot with the perpendicular line of pivot overlaps basically.

Further, the wheel set includes a rear wheel disposed near the rotation shaft, and a vertical line of the rear wheel substantially overlaps with a vertical line of the rotation shaft.

Further, the wheelset is including keeping away from the front wheel that the pivot set up, the front wheel with line between the pivot with there is the contained angle with the perpendicular line of pivot, the contained angle is greater than 20.

Further, the cleaning head also comprises a wool top assembly arranged on the cleaning head shell; when the cleaning head is in contact with an object to be cleaned, a closed cavity for preventing air flow from leaking is formed between the wool top assembly and the roller.

Furthermore, the wool top assembly comprises first wool tops which are distributed along the radial direction of the cleaning head shell and are arranged oppositely, and second wool tops which are used for being connected with the first wool tops, and one ends, far away from the second wool tops, of the first wool tops are arranged in an upwards inclined mode.

Further, the distance between one end of the first wool tops, which is far away from the second wool tops, and the front end of the cleaning head shell is smaller than the distance between the roller axis and the front end of the cleaning head shell.

Furthermore, comb teeth are further arranged on the cleaning head shell, and one ends of the comb teeth are abutted to the roller to clean the roller.

Furthermore, a suction opening for sucking dust air is formed in the cleaning head casing, and the comb teeth are arranged above the suction opening in the height direction of the cleaning head.

Furthermore, a brushing mechanism is arranged on the circumferential outer surface of the roller and is spirally arranged on the roller.

The utility model also provides a handheld dust collector, the suction pipeline of handheld dust collector can connect the cleaning head.

The beneficial effects of the utility model reside in that: the utility model discloses the line between at least partial wheelset and the pivot overlaps basically with the perpendicular line of pivot in the shown cleaning head, and rationally distributed and at the dust absorption in-process, the cleaning head remains attached on ground all the time, has improved dust collection efficiency.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

FIG. 1 is a schematic view of a hand-held vacuum cleaner according to the present application;

FIG. 2 is a schematic view of the dust-air separating mechanism shown disassembled from the main body;

FIG. 3 is a schematic partial cross-sectional view of the hand-held cleaner shown in the present application;

FIG. 4 is a schematic structural view of a dust-gas separating mechanism of the present application;

FIG. 5 is a partial schematic view of FIG. 4;

FIG. 6 is a schematic cross-sectional view of FIG. 4;

FIG. 7 is a schematic structural view of the cyclone cone of FIG. 4;

FIG. 8 is a schematic structural view of a cleaning head of the present application;

FIG. 9 is another schematic view of FIG. 8;

FIG. 10 is a schematic view of another cleaning head of the present application;

FIG. 11 is a partial schematic view of FIG. 10;

FIG. 12 is a schematic view of an angular relationship between a wheel set and a rotating shaft according to the present application;

FIG. 13 is a schematic view of the connection of the cleaning head, rotating mechanism and suction line of the present application;

FIG. 14 is a partial schematic view of FIG. 13;

FIG. 15 is a schematic view of the switch and deflector position configuration of the present application;

fig. 16 is a schematic exploded view of a battery pack and a grip portion according to the present application;

fig. 17 is a schematic structural view of the battery pack in fig. 16.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1, a handheld vacuum cleaner 100 according to an embodiment of the present invention includes a main body 1 for filtering external dust, a grip portion 2 connected to the main body 1 for gripping, and a power supply portion 5 detachably connected to the grip portion 2 for supplying power to the main body 1, wherein the power supply portion 5 may include a battery pack 51 for supplying power. Indeed, in other embodiments, the power supply unit 5 may also be a power supply line directly, and is not limited herein specifically, depending on the actual situation. In the present embodiment, in order to improve the overall appearance of the hand-held cleaner 100, the power supply unit 5 and the main body unit 1 are respectively disposed on both sides of the grip 2, and the power supply unit 5 is located below the grip 2. Indeed, in other embodiments, the position of the power supply part 5 may be other, for example, the power supply part 5 and the holding part 2 are connected to the main body part 1, and the power supply part 5 and the holding part 2 are respectively located on two sides of the main body part 1.

Referring to fig. 1 to 3, the main body 1 includes a housing 11, a driving mechanism 12 disposed in the housing 11, and a dust-air separating mechanism 13 driven by the driving mechanism 12 to separate dust from air, a suction duct 6 is formed in the housing 11 to communicate the dust-air separating mechanism 13 with the outside, the driving mechanism 12 is activated to generate an air flow flowing along the suction duct 6 and to introduce the dirt and dust from the outside into the dust-air separating mechanism 13 through the suction duct 6, and the dirt and dust are separated from the air flow by the dust-air separating mechanism 13. The power supply unit 5 is electrically connected to the driving mechanism 12 to supply power to the driving mechanism 12, and in this embodiment, the driving mechanism 12 is a motor. Indeed, in other embodiments, the driving mechanism 12 may be other, and is not limited herein, depending on the actual situation.

In order to make the structure of the handheld vacuum cleaner 100 more compact, in the present embodiment, the dust-air separating mechanism 13 is transversely disposed on the housing 11, and at the same time, the overall aesthetic appearance of the handheld vacuum cleaner 100 is improved. In addition, during the use of the handheld dust collector 100, the dust-air separating mechanism 13 is changed from the transverse direction to the longitudinal direction, which is more beneficial to the separation of dust and air, so as to improve the dust removing efficiency. Indeed, in other embodiments, the dust-gas separating mechanism 13 may be disposed longitudinally on the housing 11, and is not limited thereto, as the case may be.

Referring to fig. 2 and 4, the dust-air separating mechanism 13 is detachably mounted in the accommodating space defined by the main body 1, the handheld vacuum cleaner 100 further includes a locking mechanism 3, and the dust-air separating mechanism 13 is detachably disposed on the housing 11 of the main body 1 through the locking mechanism 3, so as to conveniently clean the dust-air separating mechanism 13. The locking mechanism 3 includes a first retaining member 31 provided on the dust-gas separating mechanism 13, and a second retaining member 32 provided on the housing 11 and cooperating with the first retaining member 31, the first retaining member 31 and the second retaining member 32 cooperating to lock or release the dust-gas separating mechanism 13 with the housing 11. One of the first and

second catches

31 and 32 is a groove, and the other of the first and

second catches

31 and 32 is a projection that catches the groove. The locking mechanism 3 further includes a pressing member 33 connected to the protrusion, and an external force is applied to the pressing member 33 to drive the protrusion to move relative to the groove, so that the protrusion is engaged with or disengaged from the groove. In the embodiment, the first retaining member 31 is a protrusion, the second retaining member 32 is a groove, the pressing member 33 is disposed on the dust-air separating mechanism 13, the pressing member 33 and the protrusion are integrally formed, and the pressing member 33 and the protrusion move synchronously. When the dust-air separating mechanism 13 is mounted to the housing 11, the pressing member 33 is positioned above the housing 11 to be exposed, facilitating the pressing and removal. When the dust-air separating mechanism 13 needs to be detached and cleaned, the pressing piece 33 is only required to be pressed, and the pressing piece 33 drives the protrusion to be separated from the corresponding groove, so that the dust-air separating mechanism 13 is taken down from the shell 11 of the handheld dust collector 100, and the operation is simple. The connection mode of the pressing member 33 and the protrusion on the dust-air separating mechanism 13 is the prior art, for example, the pressing member and the protrusion are integrally formed, or the pressing member and the protrusion are fixedly connected after being separately installed, which is not described herein again.

One of the dust-gas separating mechanism 13 and the housing 11 is provided with a first butt piece 34, and the other of the dust-gas separating mechanism 13 and the housing 11 is provided with a second butt piece 35 which is butted with the first butt piece 34 to determine the installation position. Through the matching of the first butt joint piece 34 and the second butt joint piece 35, the dust-gas separating mechanism 13 can be quickly positioned when being installed and butted with the shell 11, and the installation and the butting are convenient and quick. In this embodiment, the dust-gas separating mechanism 13 is provided with a first butt-joint member 34, the first butt-joint member 34 is a clamping groove arranged on the dust-gas separating mechanism 13, the housing 11 is provided with a second butt-joint member 35, and the second butt-joint member 35 is a clamping strip matched with the clamping groove. When installing dirt gas separating mechanism 13 on shell 11, can insert the draw-in groove with the card strip earlier, realize the accurate location of dirt gas separating mechanism 13 and shell 11, then exert external force in dirt gas separating mechanism 13 to make dirt gas separating mechanism 13 remove towards shell 11, and then make in the arch slides the recess and can accomplish with the recess block.

The main body 1 is provided with an air inlet 111 disposed near the driving mechanism 12, specifically, the air inlet 111 is disposed on the housing 11, and the air inlet 111 is located above the holding portion 2 and below the dust-air separating mechanism 13. Meanwhile, in order to enable the dust and air to flow from the inside of the housing 11 to the outside of the housing 11 after being filtered, the housing 11 is further provided with an air outlet 112 communicated with the air inlet 111. Referring to fig. 1, in the present embodiment, the air outlet 112 is disposed on the housing 11 located outside the driving mechanism 12, but in other embodiments, the air outlet 112 may also be directly disposed at other positions, which is not specifically limited herein, depending on the actual situation.

Referring to fig. 4 and 6, the dust-gas separating mechanism 13 includes a housing 131 having a through hole 1311, a cyclone separating assembly disposed in the housing 131 and communicating with the air inlet 111 through the through hole 1311, a dust cup 134 disposed in the housing 131, and a fixing frame 137 and an air outlet seawater 135 disposed at an opening (not shown) of the housing 131. The air-out HEPA 135 sets up in the cyclone separation subassembly and is close to one side of actuating mechanism 12, and the purpose that sets up like this lies in: the filtered airflow is prevented from still containing dust which is then brought into the vicinity of the drive mechanism 12, and after a long period of use, the dust can accumulate at the drive mechanism 12, which can affect the operation of the drive mechanism 12 and reduce the service life of the hand-held cleaner 100.

Referring to fig. 3, the rotation axis of the driving mechanism 12 and the longitudinal axis of the dust-air separating mechanism 13 substantially coincide with each other, and the axis of the grip 2 extends through the region between the driving mechanism 12 and the dust-air separating mechanism 13, which is designed to facilitate the application of force to the grip 2 and the balance of the entire hand-held cleaner 100. The axis of the holding part 2 extends through the air outlet HEPA 135, so that the overall layout of the handheld dust collector 100 is more reasonable, and the handheld is easier. The battery pack 51 is located at one end of the holding part 2 far away from the driving mechanism 12, so that the gravity center of the whole handheld dust collector 100 is lowered, and the comfort of an operator is improved.

Referring to fig. 4, the housing 131 is a hollow cylindrical structure, an opening is formed on one side of the housing 131 close to the driving mechanism 13, a cover 130 for sealing the housing 131 is further disposed on one side of the housing 131 away from the driving mechanism 12, the housing 131 and the cover 130 enclose a space for accommodation, one end of the housing 131 close to the driving mechanism 12 is abutted to a fixing frame 137, and the fixing frame 137 is also a hollow cylindrical structure and has the same diameter and size as the housing 131. At least a part of the outer surface of the fixing frame 137 forms a part of the outer surface of the handheld cleaner 100, that is, after the cover 131 and the fixing frame 137 are fixedly connected and mounted on the handheld cleaner 100, at least a part of the surfaces of the cover 131 and the fixing frame 137 are exposed. The pressing member 33 and the protrusion are provided on the cap 130. In the above-mentioned manner, a space is formed between the cover 131 and the cover 130 for accommodating dust, and the cover 131 and the cover 130 are detachably connected to each other in order to clean the dust in the space. The connection between the cover 131 and the cover 130 is similar to the locking mechanism 3, and may be conventional (the cooperation between the button and the button hole), which is not described herein. Also, in the present embodiment, in order to make the structure of the hand-held cleaner 100 more compact, the diameter of the housing 11 outside the driving mechanism 12 is smaller than that of the cover 131.

Referring to fig. 5 and 6, the cyclone separation assembly is used for processing the dust and air entering the housing 131 from the air inlet 111 to separate the dust and air. The cyclone separation assembly comprises a cyclone cone 133 and a screen 132 connected with the cyclone cone 133, wherein the screen 132 is sleeved outside the cyclone cone 133 and a gap exists between the screen 132 and the cyclone cone 133. The cyclone cone 133 is disposed between the screen 132 and the holder 137, and the cyclone cone 133 is detachably mounted to the holder 137 through the screen 132. The cyclone cone 133 is disposed near the air inlet 111, and the screen 132 is disposed on a side of the cyclone cone 133 away from the air inlet 111.

The screen 132 is substantially cylindrical, a plurality of meshes for air inflow are formed on the screen 132, the meshes are uniformly arranged on the screen 132, and the screen 132 has a second end arranged near the air inlet 111 and a first end arranged far away from the air inlet 111. The mesh openings are small in size, so that dust or debris of larger particles in the dust air is blocked when the dust air passes through the mesh openings and enters the screen 132, and the dust or debris with a small size relative to the mesh openings enters the screen 132 along with the air flow, so that the screen 132 is used for primary separation of the dust air.

The first end is provided with a skirt 1321 extending outwardly away from the screen 132; wherein, the interval between the initiating terminal of skirt portion 1321 and the mesh that is close to the first end setting is first interval, and along the axial direction of dirt gas separating mechanism 13, the length that a plurality of mesh account for is the second interval, and the interval between the second end and the mesh that is close to the second end setting is the third interval.

When the dust and air enters the housing 131 from the air inlet 111, the air flow velocity is relatively high, i.e., the air flow velocity at the second end is relatively high, and the pressure is relatively low, and the pressure in the screen 132 is relatively high, and it is relatively difficult for dust or debris to enter the screen 132 under the action of the pressure difference, therefore, the third distance is at least one fifth of the second distance, i.e., no mesh is arranged at the position of the screen 132 close to the second end, and specifically, the distance between the second end and the mesh arranged close to the second end is greater than or equal to 5mm, so as to improve the separation efficiency of the screen 132 on the dust and air.

At the position where the dust air is blown to the first end of the screen 132, the speed of the air flow is reduced, and the dust or debris in the dust air is difficult to enter the screen 132 due to the reduced speed of the air flow, so the position of the screen 132 close to the first end is not provided with meshes, the first distance is at least one fifth of the second distance, that is, the position of the screen 132 close to the first end is not provided with meshes, specifically, the distance between the first end and the meshes arranged close to the first end is more than or equal to 5mm, thereby improving the separation efficiency of the screen 132 on the dust air.

Referring to fig. 5, in order to make the dust-air flow from the air inlet 111 flow to the screen 132, the dust-air separating mechanism 13 further includes a guiding member 136 connected to the screen 132, and the guiding member 136 is used to guide the air flow to the screen 132. The deflector 136 is provided at the second end of the screen 132 and the deflector 136 is provided outside the cyclone cone 133 to improve the overall compactness of the cyclonic separating assembly. The flow guide member 136 has a flow guide surface disposed adjacent to the mesh. In this embodiment, the flow guide surface is an inclined surface, and the inclined surface inclines from top to bottom from a direction close to the second end to a direction away from the second end. In order to save space and achieve a significant flow guiding effect, the flow guiding member 136 includes a first flow guiding member 1361 and a second flow guiding member 1362 connected to the first flow guiding member 1361, the first flow guiding member 1361 is disposed along an outer circumferential surface of the screen 132 and adjacent to the cyclone cone 133, the second flow guiding member 1362 extends from the second end to the first end and is disposed adjacent to the air inlet 111, and a length of a distal end of the flow guiding member 136 is substantially the same as a length of the air inlet 111 along an axial direction of the dust-air separating mechanism 13, so as to better guide the airflow close to the air inlet 111 to the screen 132.

In order to prevent the airflow from flowing out of the screen 132 and allow the dust and air to enter the cyclone cone 133 completely, thereby improving the dust removing efficiency, the end of the screen 132 far away from the driving mechanism 12 is connected with the end of the cyclone cone 133 far away from the driving mechanism 12 in a sealing manner, and a second sealing member 138 for enhancing the sealing performance is arranged between the end of the screen 132 near the driving mechanism 12 and the casing 131. In this embodiment, the second sealing member 138 is a sealing ring. Optionally, the cyclone cone 133 is removably attached to the screen 132. For example, the cyclone cone 133 and the mesh 132 may be connected by a snap structure or the like. Therefore, the processing technology of the cyclone separation assembly can be simplified, and the cyclone cone 133 can be conveniently disassembled, so that the cyclone cone 133 can be conveniently disassembled to be replaced, cleaned and the like, and the assembly efficiency of the cyclone separation assembly can be improved.

Referring to fig. 6 and 7, the cyclone cone 133 is a hollow cone with an outer diameter narrowing toward the cover 130, and the cyclone cone 133 includes a plurality of cones 1331, the cones 1331 are disposed near the driving mechanism 12, the plurality of cones 1331 are distributed in a circular array, a portion of the outer wall of the cone 1331 away from the longitudinal axis of the cyclone assembly forms a predetermined angle with the longitudinal axis, and a portion of the outer wall of the cone 1331 close to the longitudinal axis of the cyclone assembly is substantially parallel to the longitudinal axis, that is, the cone 1331 located at the outer side is inclined. In particular, the cyclonic separating assembly has a central axis towards which the outboard cone 1331 is inclined. Each cone 1331 has an inlet 1332 for allowing dust and air to flow into the cone 1331 and an outlet 1333 for allowing the dust and air to flow out after separation, it is noted that the inlet 1332 is an inlet for allowing the dust and air to flow into the cone 1331, and the outlet 1333 is an outlet for allowing the dust and air separated in the cone 1331 to flow to the exhaust hepa 135.

Wherein the inlet 1332 is disposed near the air inlet 111 and the inlet 1332 communicates with a gap between the sieve 132 and the cyclone cone 133. The length of the outlet 1333 is 1.3 to 1.5 times of the length of the inlet 1332, and the cone 1331 with the outlet 1333 and the inlet 1332 in the ratio range has high dust-gas separation efficiency and better effect on dust or solid particles in dust gas.

The inlet 1332 has a first side edge disposed oppositely and a second side edge disposed oppositely and connected to the first side edge, wherein the first side edge is a relatively long side, the second side edge is a relatively short side, and the ratio of the length of the first side edge to the length of the second side edge ranges from 1.4 to 1.7, which is more favorable for the dust air to flow into the cyclone cone 133. In order to make the structure of the cone 1331 more reasonable, the length of the cone 1331 is 3-5 times the length of the inlet 1332, and preferably, the length of the cone 1331 is 4 times the length of the inlet 1332.

Referring to fig. 3 and 6, the outlet hepa 135 is provided on the side of the cyclonic separating apparatus adjacent the drive mechanism 12 so that the airflow exiting the cyclonic separating apparatus is re-filtered. Optionally, the outlet hepa 135 is detachably disposed between the cyclonic separating apparatus and the drive mechanism 12.

The cyclone separation assembly and the air outlet HEPA 135 are both mounted on the fixing frame 137, so that the cyclone separation assembly and the air outlet HEPA 135 are kept fixed on the fixing frame 137 after the fixing frame 137 is separated from the housing 131, the effect of taking the air outlet HEPA 135 and the cyclone separation assembly out is achieved, and the cyclone separation assembly is convenient and fast to use. Wherein the cyclone separating assembly is detachably connected with the fixing frame 137. Specifically, an accommodating cavity (not shown) for accommodating the wind-out hepa 135 is defined at one end of the fixing frame 137 close to the driving mechanism 12, and a cavity opening (not shown) for dismounting and mounting the wind-out hepa 135 is formed at one side of the accommodating cavity far away from the cyclone separation assembly. The fixing frame 137 is installed at the opening of the housing 131, wherein when a user takes off the dust-gas separation mechanism, the fixing frame and the air-out hepa in the fixing frame can be taken out simultaneously due to the fact that the fixing frame is installed on the housing 131, if the user needs to replace the air-out hepa 135, the fixing frame 137 does not need to be taken down from the housing 131, and only the air-out hepa 135 needs to be taken out of the accommodating cavity for replacement; if the user needs to wash the cyclone separation assembly, the fixing frame 137 is directly rotated by a certain angle and pulled out or directly pulled out, and the air-out HEPA 135 does not need to be detached, because the air-out HEPA 135 and the cyclone separation assembly are respectively arranged at two ends of the fixing frame 137. By the arrangement, the operation of a user can be facilitated, and meanwhile, the sealing performance is improved.

A first sealing element 139 for enhancing the sealing performance is further arranged between the air outlet HEPA 135 and the driving mechanism 12. The purpose of this is to: the air flow with dust is prevented from flowing to the driving mechanism 12 from the gap between the air outlet HEPA 135 and the driving mechanism 12, so that the dust is accumulated at the driving mechanism 12 to influence the operation of the driving mechanism 12. As mentioned above, the first sealing element 139 is a sealing ring to prevent the air flow from flowing out between the outlet hepa 135 and the driving mechanism 12. Indeed, in other embodiments, the wind-out hepa 135 may also be detachably disposed in the driving mechanism 12, and the wind-out hepa 135 may also be another filtering structure for further separating dust and impurities in the dust and air.

The dust and air enters the housing 131 through the air inlet 111, and is subjected to primary separation through the screen 132, the dust and air enters a gap between the screen 132 and the cyclone cone 133, and then enters the cone 1331 from the inlet 1332 of the cone 1331 for secondary cyclone separation, and the separated dust and air flows out of the outlet 1333 of the cone 1331, enters the driving mechanism 12 through the air outlet hpa 135, and flows to the outside from the air outlet 112.

The dust cup 134 includes a first dust collector 1341 and a second dust collector 1342, the first dust collector 1341 is a space formed by the cover 130 and the housing 131 for accommodating, and the second dust collector 1342 is formed by the end of the cyclone cone 133 away from the cone 1331 and the cover 130. As the dirt and air is filtered through the screen 132, a larger volume of dirt and dust or debris is initially separated from the dirt and air, which falls into the first dust collector 1341. The dust separated by the screen 132 falls into the first dust collector 1341 after entering the housing 131 through the air inlet 111. The dust enters the cyclone cone 133 and is separated in the cyclone cone 133 for a second time, at which time, under the centrifugal force, the dust is finer and smaller dust or debris can be separated and fall into the second dust collector 1342. Therefore, the dust and gas can be separated for many times through the cyclone separation component, and the separation effect is effectively improved. In other embodiments, the cyclone cone 133 may have a multi-stage cyclone structure, and is not limited thereto, that is, the cyclone chamber for cyclone separation includes a plurality of cyclone chambers sequentially connected in the flow direction of the dust and air, so as to improve the dust removing effect.

Referring to fig. 1 and 9, the main body 1 further includes a cleaning head 4 abutting against the housing 11, and the cleaning head 4 may be directly connected to the housing 11 or may be connected to the housing 11 through other components. In this embodiment, the cleaning head 4 is connected to the housing 11 through a suction duct 6, the suction duct 6 is hollow, the driving mechanism 12 drives the dust-air separating mechanism 13 to suck and separate external dust-air through the suction duct 6, the suction duct 6 is communicated with the air inlet 111, and the airflow direction of the suction duct 6 is substantially parallel to the axial direction of the dust-air separating mechanism 13. The length of the suction duct 6 is not particularly limited herein, and depends on the actual demand.

Referring to fig. 8 and 10, the cleaning head 4 is driven by the driving mechanism 12 to suck the dust and air into the dust and air separating mechanism 13 for separation. The cleaning head 4 includes a cleaning head housing 41 defining an accommodating space, and a cleaning member 42 disposed in the accommodating space of the cleaning head housing 41 and used for cleaning an object, and the cleaning member 42 may be a roller 42. The cleaner head housing 41 defines a suction port 46 for drawing in dust air, the suction port 46 being provided in communication with the suction duct 6. Specifically, the suction opening 46 is arranged close to the cleaning component 42, so that when the cleaning component 42 cleans a target object, dust and air are directly brought to the suction opening 46, the dust and air are prevented from flowing randomly, and the comfort level of the user is improved while the cleaning efficiency is improved.

Referring to fig. 10 and 11, the brushing mechanism 43 is disposed on the circumferential outer surface of the roller 42, and in order to improve the cleaning efficiency of the cleaning head 4, the brushing mechanism 43 is disposed on the roller 42 in a spiral shape, and the spiral brushing mechanism 43 can generate centrifugal force to dust, so that the dust can better enter the suction duct 6 from the suction opening 46.

The brushing mechanism 43 includes a base (not shown) disposed on the circumferential outer surface of the drum 42, and a first brushing assembly 431 and a second brushing assembly 432 fixed to the base at intervals, thereby improving cleaning efficiency. In particular, the first bristle assembly 431 is spirally disposed on the drum 42 to better suck dust into the suction duct 6. The first bristle assembly 431 and the second bristle assembly 432 are fixedly disposed on the substrate by means of bonding, etc., and will not be described herein. Wherein the length of the first bristle assembly 431 is greater than the length of the second bristle assembly 432 and the stiffness of the first bristle assembly 431 is greater than the stiffness of the second bristle assembly 432. To clean different dust. In this embodiment, the first bristle sub-assembly 431 is a bristle sub-assembly and the second bristle sub-assembly 432 is a bristle sub-assembly. Indeed, in other embodiments, the first bristle assembly 431 may be a soft bristle assembly, and the second bristle assembly 432 may be a bristle assembly, which are not specifically limited herein, as the case may be.

The width of the first bristle sub-assembly 431 can have a value of any one of 4 to 10mm and the width of the second bristle sub-assembly 432 can have a value of any one of 30 to 50 mm. Preferably, the width of the first bristle sub-assembly 431 is any one of 7 to 9mm and the width of the second bristle sub-assembly 432 is any one of 38 to 42 mm. Specific widths of the first bristle assembly 431 and the second bristle assembly 432 are not specifically limited herein. As mentioned above, in this embodiment, the width of the first bristle subassembly 431 is in the range of 4-10mm, and the width of the second bristle subassembly 432 is in the range of 30-50 mm.

Meanwhile, the first bristle subassembly 431 and the second bristle subassembly 432 have a height difference therebetween, which is in the range of 0.1-1.5mm, and preferably, the height difference is in the range of 0.6-1 mm. The purpose of the height difference is that: the first bristle assembly 431 and the second bristle assembly 432 clean the same object one after another, and the effect of improving the cleaning efficiency is also achieved. The first bristle assembly 431 comprises a plurality of first bristles, the first bristles are bristles, the diameter of each first bristle is greater than or equal to 0.1mm and less than or equal to 0.5mm, and preferably, the diameter of each first bristle is greater than or equal to 0.3mm and less than or equal to 0.4 mm. The second bristle assembly 432 comprises a plurality of second bristles, the second bristles are soft bristles, and the diameter of the second bristles is less than or equal to 0.05 mm. In order to increase the suction capacity of the brush mechanism 43 to dust or debris, one of the first brush and the second brush has a diameter of 0.05mm or less and the other has a diameter of 0.1mm or more and 0.5mm or less, thereby improving the cleaning efficiency of the hand-held cleaner 100. The specific material of the first bristles and the second bristles is not particularly limited.

The brushing mechanism 43 is detachably connected with the roller 42 so as to facilitate the replacement of the brushing mechanism 43, and the cost is saved. Specifically, one of the brush mechanism 43 and the roller 42 is provided with a catch (not shown), and the other of the brush mechanism 43 and the roller 42 is provided with a latch (not shown) that engages with the catch. As described above, since the brush mechanism 43 is spirally provided on the drum 42, the catching groove or the catching block is spirally provided on the drum 42. In this embodiment, the roller 42 is provided with a clamping groove, and the brushing mechanism 43 is provided with a clamping block, specifically, the clamping block is disposed on the substrate and back to back with the first brushing component 431 and the second brushing component 432. Indeed, in other embodiments, the brushing mechanism 43 may be fixedly connected to the roller 42, and specifically, the brushing mechanism 43 further includes an adhesive layer, and the brushing mechanism 43 is adhered to the roller 42 through the adhesive layer to achieve the fixed connection, which is not specifically limited herein, depending on the actual situation.

Referring to fig. 8 and 9, the cleaner head 4 further includes a bristle bar assembly 44 disposed on the cleaner head housing 41. When the cleaning head 4 is in contact with an object to be cleaned, a sealed cavity for preventing air flow from leaking is formed between the wool top assembly 44 and the roller 42. Specifically, the top wool assembly 44 includes a first top wool 441 and a second top wool 442, which are distributed along the radial direction of the cleaning head housing 41 and are disposed opposite to each other, and the first top wool 441 and the second top wool 442 are just in contact with the ground when the roller 42 is in contact with the ground, so as to form a closed cavity. The distance between one end of the first wool top 441, which is far away from the second wool top 442, and the front end of the cleaning head housing 41 is smaller than the distance between the axis of the roller 42 and the front end of the cleaning head housing 41, so that a gap is prevented from being generated between the first wool top 441 and the roller 42, and the sealing performance of the sealed cavity is improved. The end of the first wool top 441 far away from the second wool top 442 is also arranged in an upward inclined mode, so that the interference on the roller 42 is avoided in the working process of the roller 42, and the cleaning efficiency is reduced.

Comb teeth 45 are further arranged on the cleaning head shell 41, and one end of each comb tooth 45 is abutted against the roller 42 to clean the roller 42. The comb teeth 45 are provided above the suction port 46 in the height direction of the cleaning head 4. The purpose of this is to: the roller 42 can be cleaned without affecting the entering of dust and air, thereby achieving two purposes.

Referring to fig. 13 and 14, the cleaning head 4 further includes a rotating mechanism 7 rotatably connected to the cleaning head housing 41, and the cleaning head 4 is rotatably connected to the suction duct 6 through the rotating mechanism 7. The rotating mechanism 7 comprises a first rotating assembly 71 connected with the suction duct 6 and a second rotating assembly 72 arranged between the cleaning head housing 41 and the first rotating assembly 71, wherein one end of the second rotating assembly 72 close to the cleaning head housing 71 is rotatably connected with the cleaning head housing 41. The first rotating assembly 71 includes a connecting member 711 having a connecting function and a rotating shaft 712 disposed at an end of the connecting member 711 close to the cleaning head housing 41, and an inner wall of the second rotating assembly 72 defines an accommodating cavity (not numbered) for accommodating the rotating shaft 712, so that the first rotating assembly 71 can rotate relative to the second rotating assembly 72 when the rotating shaft 712 is located in the accommodating cavity. Specifically, the first rotating assembly 71 and the second rotating assembly 72 rotate along a first direction, the second rotating assembly 72 can rotate around its axis relative to the cleaning head housing 41, the axis of the cleaning head housing 41 is in a second direction, and the first direction and the second direction are perpendicular to each other. In the present embodiment, the first direction is a direction perpendicular to the axis of the suction duct 6, and the second direction is the axis of the suction duct 6. Indeed, in other embodiments, the first direction and the second direction may be other directions, and are not limited herein, depending on the actual situation.

The connector 711 is sleeved on the suction duct 6, and the connector 711 can be fixedly connected or detachably connected with the suction duct 6, and is not specifically limited herein, depending on the actual situation. In this embodiment, the connecting member 711 is at least partially sleeved on one end of the suction duct 6, the connecting member 711 is detachably connected to the suction duct 6, and specifically, the locking mechanism 3 similar to the above is disposed between the connecting member 711 and the suction duct 6, which is not described herein again.

The rotation shafts 712 have skirt 713, and sliding grooves 714 are formed between the skirt 713 and the connecting member 711, in order to enable the first rotating member 71 and the second rotating member 72 to be firmly connected, the number of the rotation shafts 712 is two, and the two rotation shafts 712 are oppositely disposed at both sides of the connecting member 711.

The second rotating assembly 72 includes a first rotating member 721 and a second rotating member 724, wherein an accommodating cavity for accommodating the rotating shaft 712 is formed between the first rotating member 721 and the second rotating member 724, and the second rotating member 724 is disposed inside the first rotating member 721. The second rotating component 72 is rotatably connected to the rotating shaft 712 through the sliding slot 714. Specifically, one end of the first rotating member 721, which is close to the cleaning head housing 41, is rotatably connected to the cleaning head housing 41, and one end of the first rotating member 721, which is far from the cleaning head housing 41, is inserted into the sliding groove 714 and is rotatably connected to the rotating shaft 712. The first rotating member 721 has a bent end 722 extending into the sliding groove 714, the bent end 722 is bent from an end of the first rotating member 721 away from the cleaning head housing 41 toward the connecting member 711, and the bent end 722 is disposed on a side of the rotating shaft 712 away from the cleaning head housing 41. The purpose of this is to: a space is formed between the first rotating member 721 and the connecting member 711, so that the second rotating member 724 is conveniently mounted, the connection tightness between the first rotating member 71 and the second rotating member 72 is improved, and the connection tightness between the second rotating member 72 and the cleaning head housing 41 is also improved. Moreover, a first notch 723 in sliding fit with the skirt 713 is formed between the bent end 722 and the first rotating member 721, so that bidirectional sliding is more flexible, and user experience is improved.

At least a part of the second rotating member 724 is disposed in the space, in this embodiment, one end of the second rotating member 724 is disposed in the space, one end of the second rotating member 724 close to the cleaning head housing 41 is rotatably connected to the cleaning head housing 41, and one end of the second rotating member 724 far from the cleaning head housing 41 is inserted into the sliding groove 714 and rotatably connected to the rotating shaft 712. The first rotating member 721 and the second rotating member 724 are fixedly connected at one end close to the cleaning head case 41, so that the first rotating member 721 and the second rotating member 724 move synchronously. The second rotating member 724 has a protruding end 725 extending into the sliding groove 714, and the protruding end 725 is formed to protrude outward from an end of the second rotating member 724 away from the cleaning head housing 41. A second notch 726 in sliding fit with the skirt 713 is formed between the protruding end 725 and the connecting part 711, so that the bidirectional sliding fit between the second rotating part 724 and the rotating shaft 712 is also realized, and the user experience is improved. Therefore, the shaft 712 rotates in the direction of the axis of the shaft 712 in the first and

second notches

723 and 726, the direction of the axis being the first direction. Rotation of the shaft 712 rotates the connector 711 to rotate the suction duct 6 in a first direction.

Referring to fig. 9 and 12, the cleaning head 4 further has a wheel set 8 for walking, and the wheel set 8 is rotatably connected to the cleaning head housing 41. In order to prevent the front end of the cleaner head 4 from being tilted during use of the hand-held cleaner 100, which in turn affects the cleaning efficiency, at least a part of a line connecting between the wheelset 8 and the rotation shaft 712 overlaps with a vertical line of the rotation shaft 712. The wheel set 8 comprises a rear wheel 82 disposed close to the rotating shaft 712 and a front wheel 81 disposed far from the rotating shaft 712, in this embodiment, the vertical line of the rear wheel 82 substantially overlaps with the vertical line of the rotating shaft 712 (the direction of the straight line a), so as to prevent the front end of the cleaning head 4 from tilting during the operation of the handheld vacuum cleaner 100 and affecting the dust collection efficiency. And the line between the front wheel 81 and the rotating shaft 712 forms an included angle (the direction shown by the straight line b) with the vertical line of the rotating shaft 712, the included angle is more than 20 degrees, so that the gravity center of the cleaning head 4 is closer to the front end, and the front end is prevented from tilting.

Referring to fig. 1, 15 and 16, the grip portion 2 includes a handle 21 connected to the housing 11 and located below the air inlet 111, a support member 20 disposed in front of the handle 21, a switch 25 movable relative to the handle 21, and a flow guider 26 disposed in the handle 21 and electrically connected to the battery pack 51 and the main body portion 1. It should be noted that the handle 21 is enclosed by a grip housing, and the switch 25 is movable relative to the grip housing. Wherein the fluid director 26 conducts the power supply part 5 and the main body part 1, the fluid director 26 is driven by the switch 25 to conduct, and therefore, the fluid director 26 is disposed close to the switch 25. An external force is applied to the switch 25, so that the switch 25 moves relative to the handle 21 and then abuts against the fluid director 26 to drive the fluid director 26 to conduct, and the main body part 1 works. In addition, a signal line (not shown) electrically connected to the signal lamp 50 and a power line (not shown) electrically connected to the driving mechanism 12 are laid in the grip portion 2, wherein a part of the signal line is laid in the stay 20 and a part of the power line is laid in the handle 21. It should be noted that the signal lamp 50 is used to indicate whether the handheld vacuum cleaner 100 is in an operating state.

The grip portion 2 has a hollow structure, a part of the switch 25 and the fluid director 26 are disposed in the hollow structure, and control connection lines (not shown) connecting the battery pack 51 and the switch 25 are all housed inside the grip portion 2. By arranging the battery pack 51 and the switch 25 near the grip portion 2, wiring is facilitated, so that the overall structure of the hand-held cleaner 100 is compact.

The switch 25 has a first stroke and a second stroke of a preset distance from the starting position to the final position, and the power supply portion 5 supplies power to the driving mechanism 12 when the switch 25 is located only at the second stroke. The ratio between the distance of the first stroke and the distance of the second stroke is any value between 0.5 and 1.5, and the specific distance and ratio between the first stroke and the second stroke are not particularly limited and can be selected according to actual conditions. In one embodiment, the first and second strokes may be substantially the same distance, thereby allowing easy actuation of the hand-held cleaner 100.

The opening 211 is opened on the holding shell, the switch 25 comprises a first switch member 251 disposed in the opening 211 and at least partially protruding out of the opening 211, and a second switch member 252 connected to the first switch member 251, and the fluid director 26 is disposed adjacent to the second switch member 252. In this embodiment, the first switch member 251 and the second switch member 252 are integrally formed. The first switch member 251 has a pressing surface 2511, and the pressing surface 2511 is at an angle with the plane of the opening 211, so that the pressing surface 2511 is substantially parallel to the plane of the opening 211 when the switch 25 moves to the end of the second stroke. The pressing surface 2511 is pressed until the pressing surface 2511 is flush with the opening 211, the switch 25 abuts against the fluid director 26 to enable the fluid director 26 to be conducted, namely the second switch 252 abuts against the fluid director 26, the fluid director 26 is closed, and the driving mechanism 12 works to enable the dust and gas separating mechanism 13 to separate dust and gas. Specifically, the switch 25 is rotatably connected to the handle 21 through a rotating shaft 27, and a first switching member 251 and a second switching member 252 are disposed on both sides of the rotating shaft 27. The purpose of this is to: when the cleaning head 4 is used as the front, when a force is applied to the first switch member 251 to drive the first switch member 251 to move towards the rear, the second switch member 252 moves towards the front under the action of the rotating shaft 27, so as to change the distance between the second switch member 252 and the fluid director 26, and further, the second switch member 252 and the fluid director 136 are abutted. In the height direction of the holding portion 2, the fluid director 26 is obliquely arranged in the handle 21 and is positioned below the second switch member 252, the diameter of the second switch member 252 gradually decreases along the direction toward the fluid director 26, and one end of the second switch member 252 close to the fluid director 26 is in smooth transition, so that the second switch member 252 can smoothly rotate relative to the fluid director 26. A conducting plate 261 is arranged above the fluid director 26, one end of the conducting plate 261 is fixed on the fluid director 26, and the other end of the conducting plate 261 is arranged above the fluid director 26 and is not in contact with the fluid director 26. The second switch member 252 is located above the conducting plate 261, and the first switch member 251 is pressed to drive the second switch member 252 to rotate, so that when the switch 25 is located at the second stroke, the second switch member 252 abuts against the fluid director 26, abuts against the conducting plate 261 to move downwards and contact with the fluid director 26, thereby closing the fluid director 26, and the power supply portion 5 supplies power to the driving mechanism 12.

In addition, the grip portion 2 further includes an elastic member (not shown) for resetting the switch 25, and the elastic member drives the first switch member 251 to be reset after the force applied to the first switch member 251 is removed. The elastic member is horizontally arranged in the holding shell, a first guide post (not shown) for guiding the deformation direction of the elastic member is arranged on the switch 25, a second guide post 212 for guiding the deformation direction of the elastic member is arranged on the handle 21, namely the holding shell, the elastic member is connected with the first guide post and the second guide post 212, and the first guide post and the second guide post 212 simultaneously limit the position of the elastic member. In this embodiment, the elastic member is a spring, and in other embodiments, the elastic member may also be a spring plate or other structures.

Referring to fig. 3, 16 and 17, the battery pack 51 is detachably connected to the grip portion 2. Specifically, the battery pack 51 is provided with a connection terminal 511 electrically connected to the handle 2 and a locking mechanism 55 detachably connected to the handle 2, the connection terminal 511 and the locking mechanism 55 are disposed at the same end of the battery pack 51 along the assembling and disassembling direction, the connection terminal 511 and the locking mechanism 55 are disposed at a side of the battery pack 51 away from the handle 21 and close to the support 20, and the locking mechanism 55 is used for locking the battery pack 51 and the handle 2.

The battery pack 51 is inserted into the holding part 2, one of the battery pack 51 and the holding part 2 is provided with a sliding groove 512, and the other of the battery pack 51 and the holding part 2 is provided with a sliding block 23 matched with the sliding groove 512, so that the quick disassembly is realized, and the operation is convenient and quick. When the battery pack 51 is inserted into the grip portion 2, the locking mechanism 55 locks the battery pack 51 and the grip portion 2.

The battery pack 51 comprises a bottom wall 517 for supporting the handheld vacuum cleaner 100 and a side wall 518 adjacent to the bottom wall 517, the locking mechanism 55 comprises a release button 551 and a locking member 552 connected with the release button 551 and used for locking the battery pack 51 and the holding part 2, the release button is disposed on the side wall 518, the operation is convenient, pressure is applied to the release button 551, the locking member 552 is driven to move, the battery pack 51 and the holding part 2 can be released and separated, and indeed, in other embodiments, the connection mode between the battery pack 51 and the holding part 2 can also be a snap mode or the like, which is not listed herein.

The holding portion 2 is provided with a plug portion 22, and the plug portion 22 is electrically connected to the connection terminal 511, so that the battery pack 51 supplies power to the holding portion 2. In order to facilitate the connection between the connection terminal 511 and the insertion portion 22 and the connection between the battery pack 51 and the grip portion 2, the connection terminal 511 and the sliding groove 512 or the slider 23 are located on a surface of the battery pack 51 facing the grip portion 2, thereby simplifying the structure of the hand-held cleaner 100.

In this embodiment, the slide groove 512 is provided on the battery pack 51, and the slider 23 is provided on the grip portion 2. The slide groove 512 has a slide groove opening 5121 with the insertion direction of the battery pack 51 and the grip portion 2 as the front, the slide groove opening 5121 is arranged toward the front, and the connection terminal 511 is located on the side of the slide groove 512 or the slider 23 close to the edge of the battery pack 51.

The slider 23 of the holding part 2 enters from the chute opening 5121 of the chute 512 on the battery pack 51, the slider 23 is matched with the chute 512 to fix the holding part 2 and the battery pack 51, the slider 23 can easily slide out from the chute 512 by applying force, so that the battery pack 51 can be detached from the holding part 2, and the operation is simple and convenient, and labor and time are saved.

In order to further increase the connection stability between the battery pack 51 and the holding portion 2, a fastening member 513 is disposed on the battery pack 51, and a first threaded hole 24 corresponding to the fastening member 513 is disposed on the holding portion 2 and threadedly engaged with the fastening member 513. A second threaded hole 514 in threaded fit with the fastener 513 is formed in the battery pack 51 in a penetrating manner, the fastener 513 is located in the second threaded hole 514 and is in threaded connection with the first threaded hole 24, so that the battery pack 51 and the holding part 2 are fixed, and the fastener 513 is in a structure such as a screw. When the battery pack 51 is to be detached from the grip portion 2, the fastening member 513 may be detached from the battery pack 51, and when the battery pack 51 is fixed to the grip portion 2, the fastening member 513 may be engaged and fixed by passing through the second screw hole 514 and the first screw hole 24 in this order. Indeed, in other embodiments, the battery pack 51 and the grip portion 2 may be fixed in other manners, such as a snap fit.

The battery pack 51 further includes a battery pack case 515 having a plurality of cells electrically connected to each other, and a battery pack case 516 having a sealed cavity to accommodate the battery pack case 515, and the sliding groove 512 or the slider 23 is disposed outside the battery pack case 516. In this embodiment, the number of the battery cells is six, and indeed, in other embodiments, the number of the battery cells may also be other, which is determined according to the actual situation and is not specifically limited herein. In addition, a cooling flow channel (not shown) for cooling the battery cell is arranged in the battery pack 51, and an air outlet 56 of the cooling flow channel is arranged on the side wall 518 and is positioned at one end far away from the connecting terminal 511, so that the service life of the battery cell and the safety performance during the use process are prolonged.

Referring to fig. 1 or fig. 2, the direction in which the battery pack 51 is inserted into the holding portion 2 is taken as the front, the battery pack 51 further includes a power cord 52 electrically connected to the battery module 515, the power cord 52 is disposed at the front side of the battery pack 51, and the power cord 52 is externally connected to the commercial power to charge the battery pack 51. Indeed, in other embodiments, the battery pack includes power cord interface 53, and interface 53, connection terminal 511, and the locking mechanism are disposed at the same end of battery pack 51. The power cord 52 is detachably connected to the battery pack 51 through the interface 53, and when the battery pack 51 needs to be charged, the power cord 52 is inserted into the interface 53.

The battery pack 51 further includes a circuit component 54 disposed in the battery pack housing 516 and electrically connected to the electric core component 515, the circuit component 54 is a circuit board, the connection terminal 511 is disposed on the circuit board, and the circuit board is used for electrically connecting the battery pack 51 and the connection terminal 511.

It should be noted that the battery pack 51 may also be a power cord 52 externally connected to the mains, but the length of the power cord 52 is limited, so that the handheld vacuum cleaner 100 may be limited in distance during use.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A cleaning head, characterized in that the cleaning head comprises:

a cleaning head housing defining an accommodating space;

the roller is arranged in the accommodating space;

with the slewing mechanism that the cleaning head casing rotates to be connected, slewing mechanism includes the pivot, the cleaning head has the wheelset that is used for the walking, at least part the wheelset with line between the pivot with the perpendicular line of pivot overlaps.

2. The cleaning head of claim 1 wherein the set of wheels includes a rear wheel disposed adjacent the pivot axis, a vertical line of the rear wheel overlapping a vertical line of the pivot axis.

3. The cleaner head of claim 1, wherein the set of wheels includes a front wheel disposed away from the pivot axis, a line connecting the front wheel and the pivot axis includes an angle with a vertical line of the pivot axis, the angle being greater than 20 °.

4. The cleaning head of claim 1, further comprising a bristle bar assembly disposed on the cleaning head housing; when the cleaning head is in contact with an object to be cleaned, a closed cavity for preventing air flow from leaking is formed between the wool top assembly and the roller.

5. The cleaning head of claim 4 wherein said bristle bar assembly includes first bristle bars disposed radially and oppositely along said cleaning head housing and second bristle bars connected to said first bristle bars, said first bristle bars being disposed with an upward inclination away from an end of said second bristle bars.

6. The cleaning head of claim 5 wherein an end of the first bristle bar remote from the second bristle bar is spaced from the front end of the cleaning head housing by a distance less than a distance of the roller axis from the front end of the cleaning head housing.

7. The cleaning head of claim 4, wherein the cleaning head housing further includes comb teeth, one end of the comb teeth being engaged with the drum for cleaning the drum.

8. The cleaning head according to claim 7, wherein a suction port for sucking dust air is provided in the cleaning head housing, and the comb teeth are provided above the suction port in a height direction of the cleaning head.

9. A cleaning head according to claim 1, wherein the circumferential outer surface of the drum is provided with a bristle arrangement which is helically arranged on the drum.

10. A hand-held cleaner, characterised in that a suction conduit of the hand-held cleaner is connectable to a cleaner head as claimed in any one of claims 1 to 9.