CN114680720A - Brush head module for cleaning machine and cleaning machine - Google Patents

Abstract

The invention relates to a brush head module for a cleaning machine and the cleaning machine, wherein the brush head module for the cleaning machine comprises a shell, an air guide channel is arranged in the shell, and the air guide channel is provided with a dust collection port and an air outlet; the brush head can be rotatably arranged in the air guide channel and comprises a connecting plate and at least two rows of brush column groups arranged on the connecting plate, and a gap is reserved between every two adjacent rows of brush column groups; the method is characterized in that: the toothbrush also comprises a knife rest which is arranged on the connecting plate, is positioned in the gap and rotates along with the toothbrush head, and a blade is arranged on the knife rest; and the power input end of the linkage mechanism is in transmission connection with the connecting plate, and the power output end of the linkage mechanism is in driving connection with the tool rest, so that the blade on the tool rest is driven to swing back and forth in the gap. The cutter frame can swing back and forth in the gap along the horizontal direction basically relative to the brush head in the rotating process so as to cut hair, so that the hair on the brush head is automatically cut, the hair is prevented from being wound on the brush head, and the cleaned hair can be sucked into the air guide channel.

Description

Brush head module for cleaning machine and cleaning machine

Technical Field

The invention belongs to the field of household washing and cleaning, and particularly relates to a brush head module for a cleaning machine and the cleaning machine.

Background

The current floor cleaning machine with the floor sweeping function comprises a dust collector and a floor sweeping robot, and the floor cleaning machine mainly adopts a brushing and sweeping mode, and utilizes a fan to suck impurities on the ground into an internal storage box, so that the function of cleaning the ground is achieved.

Like chinese utility model patent "portable dust catcher", its patent number is ZL201320814722.1 (the grant bulletin number is CN203597888U) discloses a portable dust catcher includes the shell, and the outer wall top of shell is equipped with the handle, is equipped with micromotor, driving gear and a plurality of driven gear in the shell, and the driving gear is connected with the micromotor, and driven gear meshes with driving gear, is connected with the dust absorption fan piece on the output shaft of driving gear, all is connected with the brush on each driven gear's the output shaft. The clearance to ground has been realized at the pivoted in-process to the dust catcher brush structure in the above-mentioned patent, but cleans the in-process, and the hair twines easily on the brush hair, when the clearance brush, needs to clear up winding hair, has increased the clearance degree of difficulty of brush.

At present, the hair on the ground is cleaned, for example, the Chinese utility model 'a hair cleaning brush', the patent number of which is ZL201620186914.6 (the publication number is CN205410228U), discloses a hair cleaning brush, which comprises a brush rod, the front end part of the brush rod is provided with bristles, the brush rod is internally provided with a connecting rod, the front end part of the connecting rod is provided with a hair removing grid, and the hair removing grid is provided with a grid for the bristles to pass through; the connecting rod is driven by a power source to move along the axis of the brush rod, so that the hair removing grid is driven to move along the bristles. Although this patent implements hair cleaning on the floor, it cannot simultaneously clean dust and hair.

Therefore, further improvements to existing brushhead modules are needed.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a brush head module for a cleaning machine, which cleans entangled hair while collecting dust, in view of the above-mentioned current state of the art.

The invention provides a brush head module for combing hair on a brush head.

The third technical problem to be solved by the invention is to provide a brush head module which can accelerate the flow velocity of the air flow at the dust suction port so as to achieve the purpose of improving the cleaning capability.

A fourth object of the present invention is to provide a cleaning machine with a hair cutting function.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a brush head module for a cleaning machine comprises

The air guide channel is provided with a dust suction port and an air outlet which is communicated with the dust suction port in a fluid mode, and the air outlet is located at the downstream of the dust suction port along an airflow flowing path;

the brush head is used for sweeping an object to be cleaned, can be rotatably arranged in the air guide channel, and comprises a connecting plate and at least two rows of brush column groups arranged on the connecting plate, and a gap is reserved between every two adjacent rows of brush column groups; it is characterized in that: also comprises

The knife rest is arranged on the connecting plate, is positioned in the gap and rotates along with the brush head, and a blade is arranged on the knife rest;

and the power input end of the linkage mechanism is in transmission connection with the connecting plate, and the power output end of the linkage mechanism is in driving connection with the tool rest, so that the blade on the tool rest is driven to swing back and forth in the gap. In this way, the hair fitted into the gap is cut.

Preferably, the rotation axis of the brush head extends in the up-down direction in a state where the opening of the dust suction port is directed downward, the blade holder is arranged substantially horizontally, and the blade is disposed in the gap so as to move back and forth substantially horizontally by the drive of the link mechanism.

Linkage mechanism's structural style has the multiple, can adopt spring and knife rest complex form, can also adopt guide way and extension rod complex form, but preferably, linkage mechanism is including setting up on the connecting plate and along the extension rod that the axis of rotation of brush head extends, the extension rod has two, and along the length direction interval arrangement of knife rest, and with the knife rest is basically perpendicular, have on the knife rest with the corresponding guide way that just extends along the length direction of knife rest of extension rod, the extension rod part passes corresponding guide way and slides spacing in this guide way.

In order to improve the stability of the motion of the tool rest, a first convex part and a second convex part which are arranged at intervals along the length direction of the extension rod are laterally arranged in a protruding mode on the outer peripheral wall of the extension rod, and the portion, located between the first convex part and the second convex part, of the extension rod is located in the guide groove all the time.

Preferably, each row of brush column groups comprises a plurality of brush columns which extend along the rotating axis of the brush head and are arranged at intervals, and the brush columns are arranged on the connecting plate.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the toothbrush further comprises a transmission assembly used for driving the tool rest to move back and forth relative to the connecting plate along the rotating axis of the toothbrush head, the power input end of the transmission assembly is in transmission connection with the toothbrush head, and the power output end of the transmission assembly is in driving connection with the tool rest. The power input end of the transmission component can also be wind power transmission.

The transmission assembly can be in various forms, but preferably, the transmission assembly comprises

The fixed plate is connected to the outer wall of the shell, at least two sliding parts which are positioned on the periphery of the rotating shaft of the brush head and are arranged at intervals along the circumferential direction are arranged on the fixed plate, the fixed plate is positioned on the shell when the opening of the dust suction port is in a downward state, and the sliding parts are arranged on the lower surface of the fixed plate;

the first end of the connecting rod is located in the air guide channel, penetrates through the connecting plate and then is connected with the knife rest, and only moves back and forth relative to the connecting plate along the rotating shaft of the brush head, the second end of the connecting rod is located between the shell and the fixed plate, a slide way in sliding fit with the sliding piece is formed on the end face of the second end, bulges which are consistent with the quantity of the sliding piece and extend towards the direction of the fixed plate are arranged in the slide way, the sliding piece is located between two corresponding adjacent bulges under the condition that the knife rest is located close to the fixed plate, and the sliding piece is abutted to the corresponding bulges under the condition that the knife rest is located far away from the fixed plate.

Preferably, the second pot head of connecting rod is equipped with and is located the ring body between shell and the fixed plate, be provided with between connecting rod and the ring body and be formed with the slide, the slider sets up for rotating the gyro wheel on the fixed plate, the periphery wall of connecting rod outwards extends and is formed with the arch, bellied other end with the internal perisporium of ring body links to each other.

In order to completely cut the hair wound on the brush column, the blade is partially exposed at the free end of the brush column when the knife rest is located farthest away from the fixed plate.

In order to make the connecting rod automatically return to the initial position, the connecting rod fixing device also comprises an elastic element which acts on the connecting rod and always makes the connecting rod have the tendency of moving towards the direction of the fixing plate.

The driving force for the rotation of the brush head can be wind power or active driving, but from the viewpoint of the reliability of the rotation of the brush head, the brush head driving device preferably further comprises a driving mechanism for driving the brush head to rotate, and a power output end of the driving mechanism is in driving connection with the brush head.

Specifically, an opening through which the second end of the connecting rod passes downward is formed in the position, close to the center, of the connecting plate, an extension pipe is formed by extending the periphery of the opening towards the direction of the fixing plate, the other end of the extension pipe is connected with the driving mechanism, and the connecting rod slides along the extension pipe and is partially located in the extension pipe.

Preferably, the wind guide channel is provided with a plurality of wind guide channels which are arranged side by side at intervals, and the driving mechanism comprises

The motor is arranged on the shell, is positioned outside the air guide channel and is provided with an output shaft which is arranged in parallel with the rotating shaft of the brush head;

the driving gear is arranged on an output shaft of the motor;

driven gear, with the brush head corresponds the setting, installs on the extension pipe that corresponds, and is located between slide and the shell, one of them driven gear with the driving gear meshes mutually, adjacent two the driven gear of brush head meshes mutually.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the brush head is positioned at the position of the wind guide channel adjacent to the center, the side wall of the wind guide channel is provided with an air inlet for air to enter tangentially, and the air inlet is communicated with the dust suction port.

In order to accelerate the flow of the mixed gas flow, a liquid guide channel is arranged on the shell and is communicated with a liquid supply assembly of the cleaning machine, and the liquid guide channel is provided with a liquid outlet which is positioned downstream of the air inlet along a fluid flow path.

The technical scheme adopted by the invention for solving the fourth technical problem is as follows: a cleaning machine with the brush head module is characterized in that: the brush head module is characterized by further comprising a fan and a separation module for separating a mixture of water and dust, the separation module is located between the brush head module and the fan along an airflow flow path, an inlet of the separation module is in fluid communication with an air outlet of the brush head module, and an outlet of the separation module is communicated with an inlet of the fan.

Preferably, the cleaning machine is a vacuum cleaner or a sweeping robot.

Compared with the prior art, the invention has the advantages that: this a brush first module for cleaner can treat clean object and carry out the dust absorption, the knife rest of brush first module rotates along with the brush head, the knife rest is in the pivoted in-process relative brush head is basically along the horizontal direction swing back and forth in the clearance in order to cut hair, thereby carry out automatic cutout with the hair on the brush head, prevent that hair from twining on the brush head, the hair that the clearance got off can be inhaled to the wind-guiding passageway in, on the one hand, the automatic clearance to the hair on the brush head has been realized, need not artifical manual clearance, it is convenient to clear up, on the other hand, can in time suck away the hair that the clearance got off, keep the clean of treating clean object.

Drawings

FIG. 1 is a schematic structural view of a brush head module of the present embodiment;

FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a cross-sectional view at another angle of FIG. 1;

FIG. 5 is a schematic view of the structure at another angle of FIG. 2;

FIG. 6 is a schematic view of a portion of the structure of FIG. 1;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is a schematic view of a connecting rod;

fig. 9 is a schematic structural view of the vacuum cleaner of the present embodiment.

Detailed Description

The invention is described in further detail below with reference to the following examples of the drawings.

As shown in fig. 9, the cleaning machine of the embodiment of the present invention is a vacuum cleaner, and the object to be cleaned is a floor surface. The dust collector comprises a brush head module 01, a fan 4 and a separation module for separating a mixture of water and dust, wherein the separation module is positioned between the brush head module 01 and the fan 4 along an airflow flow path, an inlet of the separation module is in fluid communication with an air outlet 113 of the brush head module 01, and an outlet of the separation module is in communication with an inlet of the fan 4. Under the effect of fan 4, can make and form the negative pressure in brush head module and the separation module to inhale rubbish such as dust, water in the brush head module through dust absorption mouth 111, discharge after separating through the separation module afterwards, the separation module can adopt any structure among the prior art, will not be repeated in detail in this embodiment again.

As shown in fig. 9, a brush head module 01 for a cleaning machine includes a brush head assembly 012 and a housing 011, and the brush head assembly 012 includes a housing 1, a brush head 13, a knife rest 18, an elastic member, a linkage mechanism and a transmission assembly 17. The housing 011 is opened at a position corresponding to the dust suction port 111, the brush head assembly 012 is partially located in the housing 011, and the brush head 13 of the brush head assembly 012 is partially exposed below the opening. As shown in fig. 1 to 8, the casing 1 has an air guide passage 11 therein, the air guide passage 11 has a dust suction port 111 and an air outlet 113 opening downward, and the air outlet 113 is located downstream of the dust suction port 111 along the fluid flow path. As shown in fig. 3, the brush head 13 is located near the center of the air guide channel 11, and a gap 135 is left between the outer peripheral edge of the brush head 13 and the inner peripheral wall of the air guide channel 11. An air inlet 112 for tangential entry of air is tangentially arranged on the side wall of the air guide channel 11, and the air inlet 112 is communicated with the dust suction port 111. At least two air guide channels 11 are provided, in this embodiment, four air guide channels 11 are arranged side by side, and the air inlet 112 of each air guide channel 11 is located on the same side of the housing 1.

In order to increase the flow speed of the fluid entering the air inlet, the air inlet 112 is connected with an air inlet channel 114, the air inlet channel 114 is located at the front side of the air guiding channel 11, and the air inlet channel 114 gradually shrinks along the airflow path. As shown in fig. 1, the air intake channel 114 includes a first connecting wall 118 extending from front to back and a second connecting wall 119 extending from back to front gradually in a direction away from the first connecting wall 118, and the air intakes 112 of the two air guide channels 11 located in the middle are adjacently disposed and share the same first connecting wall 118; the air inlets 112 of the two air guiding channels 11 located at both sides are arranged far away from each other, and the ends of the second connecting walls 119 of the two air guiding channels are connected to form a V-shaped guiding wall, as shown in fig. 1.

As shown in fig. 1, the housing 1 is provided with a liquid guiding channel 12 for communicating with a liquid supply assembly of the cleaning machine, one liquid guiding channel 12 is provided between two adjacent air guiding channels 11, the liquid guiding channel 12 is provided with a liquid outlet 121 with a downward opening, and the liquid outlet 121 is located downstream of the adjacent air inlet 112 along the fluid flow path.

The above-mentioned brush head 13 is used for cleaning an object to be cleaned, as shown in fig. 2, the brush head 13 is rotatably disposed in the air guide channel 11 through a rotating shaft, and an axis of the rotating shaft of the brush head 13 is a rotating axis of the brush head 13, in this embodiment, as shown in fig. 3, the rotating shaft of the brush head 13 extends along an up-down direction, and the brush head 13 includes a connecting plate 131 substantially horizontally disposed and at least two rows of brush column groups disposed on the connecting plate 131, as shown in fig. 2 and fig. 3, a gap 1300 is left between two adjacent rows of brush column groups, each row of brush column group includes a plurality of brush columns 1321 extending up and down and disposed at intervals, and the brush columns 1321 are disposed on a lower surface of the connecting plate 131. As shown in fig. 3, 4 and 6, the tool holder 18 is disposed on the connecting plate 131, is located below the connecting plate 131 and rotates with the connecting plate 131, and the tool holder 18 is provided with a blade 181 extending up and down; the blade holder in this embodiment is in the form of a strip, and a plurality of blades 181 are arranged at intervals along the length of the blade holder 18.

As shown in fig. 2, in order to realize the up-and-down movement of the knife rest 18 relative to the connecting plate 131, the knife rest 18 can move up and down relative to the connecting plate 131 under the driving of the transmission assembly 17, the power input end of the aforementioned transmission assembly 17 is in transmission connection with the brush head 13, and the power output end of the transmission assembly 17 is in driving connection with the knife rest 18. As shown in fig. 3, 4 and 7, the transmission assembly 17 includes a fixing plate 171 and a connecting rod 172, the fixing plate 171 is connected to the outer wall of the housing 1 and is located above the housing 1, two sliding members located at the periphery of the rotating shaft of the brush head 13 and arranged at intervals along the circumferential direction are disposed on the lower surface of the fixing plate 171, the sliding members are rollers 1711 rotatably disposed on the fixing plate 171, and there are two rollers 1711; the connecting rod 172 is vertically arranged, the lower end (first end) of the connecting rod 172 is located in the air guiding channel 11 and connected with the tool post 18 after passing through the connecting plate 131, the upper end (second end) of the connecting rod 172 is located between the housing 1 and the fixing plate 171, a slideway 170 in sliding fit with the rollers 1711 is formed on the upper end surface of the connecting rod 172, protrusions 1721 which are consistent in number with the rollers 1711 and extend upwards are arranged in the slideway 170, specifically, as shown in fig. 4 and 7, an annular body 173 located between the housing 1 and the fixing plate 171 is sleeved on the upper end of the connecting rod 172, the slideway 170 is formed between the connecting rod 172 and the annular body 173, the outer peripheral wall of the connecting rod 172 extends outwards to form the protrusions 1721, and the other end of the protrusions 1721 is connected with the inner peripheral wall of the annular body 173. With the carriage 18 in the lowermost position, the roller 1711 abuts the corresponding projection 1721, and with the carriage 18 in the uppermost position, the roller 1711 is located in the recessed region between the corresponding adjacent two projections 1721, as shown in fig. 7.

As shown in fig. 3 and 4, an opening is formed in the connecting plate 131 near the center for the upper end of the connecting rod 172 to pass through downward, an extension pipe 1311 is formed by extending the circumference of the opening upward, the upper end of the extension pipe 1311 is connected to the driving mechanism 14, and the connecting rod 172 slides up and down and is partially located in the extension pipe 1311. As shown in fig. 3, the elastic member acts on the connecting rod 172 and always makes the connecting rod 172 have a tendency of moving upward, specifically, the elastic member is a spring 19 sleeved on the periphery of the connecting rod 172 and located in a sleeve 1311, an inner peripheral wall of the opening extends inward to form a step, a lower end of the spring 19 can abut against the step, an upper end of the spring 19 can abut against a part of the connecting rod 172, and thus the spring 19 is in an energy storage state.

As shown in figure 5, the brush head 13 is driven by the driving mechanism 14 to rotate around the rotation axis of the brush head 13, and the power output end of the driving mechanism 14 is in driving connection with the brush head 13. The driving mechanism 14 includes a motor 141, a driving gear 142 and a driven gear 143, each brush head 13 is provided with one driven gear 143, wherein the motor 141 is disposed on the housing 1 and located outside the air guiding channel 11, and the motor 141 has an output shaft extending vertically; the driving gear 142 is mounted on the output shaft of the motor 141; the driven gears 143 are installed on the extension pipe 1311 corresponding to the brush heads 13 and are located between the ring body 173 and the housing 1, wherein one driven gear 143 is engaged with the driving gear 142, and the driven gears 143 of two adjacent brush heads 13 are engaged, so that the rotation of each brush head 13 is realized under the driving of the motor 141 and the transmission engagement of the driving gear 142 and the driven gear 143. During the rotation of the brush head 13, the connecting rod 172 rotates along with the brush head 13 and carries the knife rest 18 to move up and down under the action of the roller 1711, the convex part 1721 and the slideway 170.

The blade carrier 18 is moved back and forth in a horizontal direction relative to the web by a linkage mechanism that simultaneously couples the web 131 and the blade carrier 18 so that the blade carrier 18 oscillates back and forth in the gap 1300 in a substantially horizontal direction to cut hair. As shown in fig. 4 and 7, the linkage mechanism includes two extending rods 1315 disposed on the connecting plate 131 and extending downward, the two extending rods 1315 are disposed at intervals along the length direction of the tool holder 18, the tool holder 18 is provided with a guide groove 182 extending along the length direction of the tool holder 18, each extending rod 1315 corresponds to one guide groove 182, the peripheral wall of the extending rod 1315 is laterally provided with a first protrusion 1316 and a second protrusion 1317 disposed at intervals up and down, the first protrusion 1316 is located on the second protrusion 1317, and a portion of the extending rod 1315 located between the first protrusion 1316 and the second protrusion 1317 is located in the guide groove 182 all the time and can be laterally limited in the guide groove 182 in a back and forth sliding manner along the length direction of the guide groove 182. In this way, during the rotation of the brush head 13, the extension rod 1315 will move back and forth in the guide groove 182, so as to cut the hairs embedded into the gap 1300 during the cleaning operation.

The term "fluid communication" as used herein refers to the spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion respectively), i.e., the fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be direct communication between the first portion and the second portion, or indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, a chamber allowing the fluid to flow therethrough, or a combination thereof. Vertical in the above description and claims includes but is not limited to vertical.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the figures. Because the disclosed embodiments of the invention may be oriented in different directions, the directional terms are used for illustrative purposes and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity.

Claims (17)

1. A brush head module for a cleaning machine comprises

The air cleaner comprises a shell (1), wherein an air guide channel (11) is arranged in the shell, the air guide channel (11) is provided with a dust suction port (111) and an air outlet (113) which is communicated with the dust suction port (111) in a fluid mode, and the air outlet (113) is located at the downstream of the dust suction port (111) along an airflow flow path;

the brush head (13) is used for sweeping an object to be cleaned, can be rotatably arranged in the air guide channel (11), and comprises a connecting plate (131) and at least two rows of brush column groups arranged on the connecting plate (131), wherein a gap (1300) is reserved between every two adjacent rows of brush column groups; the method is characterized in that: also comprises

The knife rest (18) is arranged on the connecting plate (131), is positioned in the gap (1300), and rotates along with the brush head (13), and a blade (181) is arranged on the knife rest (18);

and the power input end of the linkage mechanism is in transmission connection with the connecting plate (131), and the power output end of the linkage mechanism is in driving connection with the tool rest (18), so that a blade (181) on the tool rest (18) is driven to swing back and forth in the gap (1300).

2. The brush head structure of claim 1, wherein: when the opening of the dust suction opening (111) is in a downward state, the rotation axis of the brush head (13) extends along the up-and-down direction, the knife rest (18) is basically horizontally arranged, and the blade (181) is driven by the linkage mechanism to be basically horizontally arranged in the gap (1300) in a reciprocating manner.

3. The brush head structure of claim 2, wherein: the link gear is including setting up on connecting plate (131) and along extension rod (1315) that the axis of rotation of brush head (13) extends, extension rod (1315) have two, and along the length direction interval arrangement of knife rest (18), and with knife rest (18) is basically perpendicular, have on knife rest (18) with extension rod (1315) correspond and along the guide way (182) of the length direction extension of knife rest (18), extension rod (1315) are local to be passed corresponding guide way (182) and slide spacing in this guide way (182).

4. The brush head structure of claim 3, wherein: the peripheral wall of the extension rod (1315) is laterally provided with a first convex part (1316) and a second convex part (1317) which are arranged at intervals along the length direction of the extension rod, and the part of the extension rod (1315) between the first convex part (1316) and the second convex part (1317) is always positioned in the guide groove (182).

5. The brush head structure of claim 1, wherein: each row of brush column groups comprises a plurality of brush columns (1321) which extend along the rotating axis of the brush head (13) and are arranged at intervals, and the brush columns (1321) are arranged on the connecting plate (131).

6. The brush head structure of any one of claims 1 to 5, wherein: the toothbrush further comprises a transmission assembly (17) used for driving the tool rest (18) to move back and forth relative to the connecting plate (131) along the rotating axis of the toothbrush head (13), the power input end of the transmission assembly (17) is in transmission connection with the toothbrush head (13), and the power output end of the transmission assembly (17) is in driving connection with the tool rest (18).

7. The brush head structure of claim 6, wherein: the transmission component (17) comprises

A fixed plate (171) connected to an outer wall of the housing (1), and provided with at least two sliding members located at a periphery of a rotation shaft of the brush head (13) and arranged at intervals in a circumferential direction, wherein the fixed plate (171) is located above the housing (1) in a state that an opening of the dust suction port (111) is directed downward, and the sliding members are provided on a lower surface of the fixed plate (171);

a connecting rod (172), the first end of which is positioned in the air guide channel (11) and is connected with the knife rest (18) after passing through the connecting plate (131), and only moves back and forth along the rotating shaft of the brush head (13) relative to the connecting plate (131), the second end of the connecting rod (172) is positioned between the shell (1) and the fixed plate (171), and the end surface of the second end is provided with a slideway (170) which is matched with the sliding piece in a sliding way, the slide way (170) is internally provided with protrusions (1721) which are consistent with the number of the sliding pieces and extend towards the direction of the fixing plate (171), in the state that the tool rest (18) is positioned adjacent to the fixing plate (171), the sliding piece is positioned between two corresponding adjacent protrusions (1721), in the position of the tool holder (18) remote from the fastening plate (171), the sliding element abuts against the corresponding projection (1721).

8. The brush head structure of claim 7, wherein: the second pot head of connecting rod (172) is equipped with and is located annular body (173) between shell (1) and fixed plate (171), be provided with between connecting rod (172) and annular body (173) and be formed with slide (170), the slider sets up for rotating gyro wheel (1711) on fixed plate (171), the periphery wall of connecting rod (172) outwards extends and is formed with arch (1721), the other end of arch (1721) with the internal perisporium of annular body (173) links to each other.

9. The brush head structure of claim 8, wherein: when the tool rest (18) is located farthest from the fixing plate (171), the blade (181) is partially exposed to the free end of the brush column (1321).

10. The brushhead module of claim 7, wherein: the device also comprises an elastic element which acts on the connecting rod (172) and always enables the connecting rod (172) to have the tendency of moving towards the direction of the fixed plate (171).

11. The brushhead module of claim 7, wherein: the toothbrush further comprises a driving mechanism (14) used for driving the toothbrush head (13) to rotate, and a power output end of the driving mechanism (14) is in driving connection with the toothbrush head (13).

12. The brushhead module of claim 11, wherein: an opening through which the second end of the connecting rod (172) passes is formed in the position, close to the center, of the connecting plate (131), an extension pipe (1311) extends along the periphery of the opening towards the direction of the fixing plate (171), the other end of the extension pipe (1311) is connected with the driving mechanism (14), and the connecting rod (172) slides along the extension pipe (1311) and is partially located in the extension pipe (1311).

13. The brushhead module of claim 12, wherein: the air guide channels (11) are arranged side by side at intervals, and the driving mechanism (14) comprises

A motor (141) which is arranged on the shell (1), is positioned outside the air guide channel (11) and is provided with an output shaft which is arranged in parallel with the rotating shaft of the brush head (13);

a drive gear (142) mounted on an output shaft of the motor (141);

the driven gears (143) are arranged corresponding to the brush heads (13), are arranged on the corresponding extension pipes (1311) and are positioned between the slide ways (170) and the shell (1), one driven gear (143) is meshed with the driving gear (142), and the driven gears (143) of two adjacent brush heads (13) are meshed.

14. The brushhead module of claim 1, wherein: the brush head (13) is located at a position, close to the center, of the air guide channel (11), an air inlet (112) used for air to enter tangentially is formed in the side wall of the air guide channel (11), and the air inlet (112) is communicated with the dust suction port (111).

15. The brush head module of claim 14, wherein: the shell (1) is provided with a liquid guide channel (12) communicated with a liquid supply assembly of the cleaning machine, the liquid guide channel (12) is provided with a liquid outlet (121), and the liquid outlet (121) is located at the downstream of the air inlet (112) along a fluid flow path.

16. A cleaning machine having a brushhead module of any one of claims 1 to 15, wherein: the brush head module is characterized by further comprising a fan (4) and a separation module for separating a water and dust mixture, wherein the separation module is located between the brush head module (01) and the fan (4) along an airflow flow path, an inlet of the separation module is in fluid communication with an air outlet (113) of the brush head module (01), and an outlet of the separation module is communicated with an inlet of the fan (4).

17. The cleaning machine of claim 16, wherein: the cleaning machine is a dust collector or a sweeping robot.

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