Cleaning device

Abstract

The cleaning device comprises a device body, a first driving assembly and a rolling brush assembly, the first driving assembly is arranged on the device body and comprises a machine shell and a driving unit, a positioning part extending in the axial direction of the machine shell is arranged on the inner wall of the machine shell, and the machine shell and the positioning part are constructed to be integrally formed; the driving unit comprises a stator winding, a matching part is arranged on the outer wall of the stator winding, and the stator winding is constructed to be installed in the inner cavity of the machine shell in a guiding mode through the matching part and the positioning part; the outer surface of the machine shell is exposed to form the outer surface of the first driving assembly. The rolling brush assembly is configured to be arranged on the outer side of the machine shell in a sleeving mode and is configured to be in transmission connection with the output end of the driving unit. According to the cleaning device, the outer surface of the machine shell is exposed to form the outer surface of the first driving assembly, two shells do not need to be arranged, and the overall weight and the machining cost of the first driving assembly can be effectively reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cleaning equipment, and in particular to a cleaning device and a driving assembly. Background Art

[0002] Floor scrubbers with cleaning functions such as floor washing and mopping can replace users to clean the floor and bring many conveniences to users, so they are widely used. Floor scrubbers are usually equipped with motors to drive the roller brushes to rotate. However, the current motors have unreasonable designs, complex housing structures, and poor heat dissipation effects.

[0003] Specifically, in the roller brush motor drive structure of the existing floor scrubber, two casings are usually provided. The drive unit is fixed in the first casing, the second casing and the shaft coupling are integrally provided, the second casing is sleeved on the outside of the first casing, and a heat dissipation duct is provided between the first casing and the second casing. The structure is relatively complicated, which greatly increases the weight and cost of the roller brush motor drive structure. Utility Model Content

[0004] The present disclosure provides a cleaning device capable of improving the heat dissipation effect of a driving component used to drive a roller brush component.

[0005] According to a first aspect of the present disclosure, there is provided a cleaning device, comprising:

[0006] Device body;

[0007] A first drive assembly, which is arranged on the device body and includes a housing and a drive unit, wherein a positioning portion extending along the axial direction of the housing is arranged on the inner wall of the housing, and the housing and the positioning portion are integrally formed; the drive unit includes a stator winding, wherein a matching portion is arranged on the outer wall of the stator winding, and the stator winding is configured to be installed in the inner cavity of the housing through the matching portion and the positioning portion; the outer surface of the housing is exposed, constituting the outer surface of the first drive assembly;

[0008] The roller brush assembly is configured to be sleeved on the outside of the housing and is configured to be transmission-connected to the output end of the driving unit.

[0009] In one embodiment of the present disclosure, a stop portion extending radially thereof is further provided on the inner wall of the casing, the casing, the positioning portion and the stop portion are constructed to be integrally formed of plastic material, and the end face of the stator winding is constructed to abut against the stop portion.

[0010] In one embodiment of the present disclosure, the first driving assembly further includes a shaft coupling and a speed reducing portion, and the roller brush assembly is configured to be drivingly connected to the driving unit through the shaft coupling;

[0011] The coupling is fixed to the side of the deceleration part away from the driving unit. The driving unit and the deceleration part are located in the cavity surrounded by the machine housing. When the rolling brush is separated from the first driving component, the coupling is located outside the cavity surrounded by the machine housing. When the rolling brush is installed on the first driving component, the coupling partially extends into the cavity surrounded by the machine housing.

[0012] In an embodiment of the present disclosure, the first driving component further includes a first impeller and a second impeller. The first impeller is in transmission connection with the driving unit. The second impeller is fixed to the machine housing. The first impeller and the second impeller are arranged opposite to each other. The driving unit is configured to drive the first impeller to rotate relative to the second impeller, so that the first impeller guides the air flow to pass through the first impeller and the second impeller in sequence.

[0013] In an embodiment of the present disclosure, the first impeller includes a first blade. The first blade has a first front vertex and a first rear vertex arranged in sequence along the direction close to the second impeller. The first blade also has a first direction pointing from the midpoint of the first front vertex to the center of the first rear vertex. The second impeller includes a second blade. The second blade has a second front vertex and a second rear vertex arranged in sequence along the direction away from the first impeller. The second blade also has a second direction pointing from the midpoint of the second front vertex to the center of the second rear vertex. When the first impeller rotates to a position where the first blade and the second blade are arranged opposite to each other, the included angle θ between the first direction and the second direction satisfies: 75° ≤ θ ≤ 105°.

[0014] In an embodiment of the present disclosure, the first driving component further includes a connecting piece. The machine housing is connected to the device main body through the connecting piece;

[0015] Wherein, the connecting piece is provided with an air inlet. The interior of the machine housing has a heat dissipation channel communicated with the air inlet, and an air outlet is provided at the end of the heat dissipation channel away from the connecting piece. The first impeller and the second impeller are located in the heat dissipation channel. The first impeller is configured to guide the air flow to enter the heat dissipation channel from the air inlet and guide the air flow in the heat dissipation channel to be discharged through the air outlet.

[0016] In an embodiment of the present disclosure, the first driving component further includes a partitioning part. The partitioning part is arranged in the heat dissipation channel to divide the heat dissipation channel into a first sub-channel and a second sub-channel arranged in sequence along the direction away from the connecting piece. The first impeller and the second impeller are located in the first sub-channel, and the first impeller and the second impeller are arranged in sequence along the direction close to the second sub-channel. The air outlet is located at the end of the second sub-channel away from the first sub-channel;

[0017] The driving unit includes a driving part, the driving part is arranged in the first sub-channel, the speed reduction part is arranged in the second sub-channel, the driving part is transmission-connected to the first impeller, and the driving part is also transmission-connected to the roller brush assembly through the speed reduction part.

[0018] In one embodiment of the present disclosure, the cleaning device further comprises:

[0019] A second driving assembly is disposed on the device body; and

[0020] The interference member is in driving connection with the second driving assembly, and the second driving assembly is used to drive the interference member to move relative to the roller brush assembly to adjust the interference amount between the interference member and the roller brush assembly.

[0021] In one embodiment of the present disclosure, the roller brush assembly is used to clean the surface to be cleaned;

[0022] The interference member comprises:

[0023] A roller brush cover is located on a side of the roller brush assembly away from the surface to be cleaned; or

[0024] A scraper bar interferes with the roller brush assembly and is used to scrape dirt on the roller brush assembly.

[0025] In one embodiment of the present disclosure, the second driving assembly is used to drive the interference member to switch between a first state and a second state, and the interference amount between the interference member and the roller brush assembly in the first state is less than the interference amount between the interference member and the roller brush assembly in the second state;

[0026] The first drive assembly also includes:

[0027] A current sensor, used to detect the current value of the driving unit;

[0028] Among them, during the process of drying the roller brush assembly, when the current sensor detects that the current value of the drive unit is less than the first current threshold, the second drive assembly drives the interference member to switch from the first state to the second state until the current sensor detects that the current value of the drive unit is greater than or equal to the second current threshold; the first current threshold is less than the second current threshold.

[0029] In one embodiment of the present disclosure, the second driving assembly is used to drive the interference member to switch between a first state and a second state, and the interference amount between the interference member and the roller brush assembly in the first state is less than the interference amount between the interference member and the roller brush assembly in the second state;

[0030] The first driving assembly further includes:

[0031] a temperature sensor, which is disposed close to the driving unit and is used to detect the temperature value of the driving unit;

[0032] Wherein, during the drying process of the roller brush assembly, when the temperature sensor detects that the temperature value of the driving unit is less than a first temperature threshold, the second driving assembly drives the interference member to switch to the second state, and when the temperature sensor detects that the temperature value of the driving unit is greater than a second temperature threshold, the second driving assembly drives the interference member to switch to the first state; the first temperature threshold is less than the second temperature threshold.

[0033] In an embodiment of the present disclosure, the roller brush assembly includes:

[0034] a heat-conducting cylinder body, which is in transmission connection with the driving unit; and

[0035] a roller brush body, which is disposed around the outer periphery of the heat-conducting cylinder body, and the roller brush body is used for cleaning work. The heat generated by the operation of the driving unit is conducted to the roller brush body through the heat-conducting cylinder body to dry the roller brush body.

[0036] In an embodiment of the present disclosure, when drying the roller brush assembly, the driving unit drives the roller brush assembly to rotate in a first rotation direction, and when the drying of the roller brush assembly is completed, the driving unit drives the roller brush assembly to rotate in a second rotation direction, and the first rotation direction is opposite to the second rotation direction.

[0037] During the installation process of the cleaning device of the present disclosure, the mating part of the stator winding of the driving unit is aligned with the positioning part in the machine shell, and then the driving unit is axially pushed into the inner cavity of the machine shell under the guiding fit between the mating part and the positioning part until the end face of the stator winding abuts against the stop part extending radially on the inner wall of the machine shell to complete the installation of the driving unit. During the working process of the cleaning device of the present disclosure, the driving unit can drive the roller brush assembly sleeved outside the machine shell to rotate to clean the surface to be cleaned.

[0038] In the cleaning device of the present disclosure, the machine shell can prevent the water of the roller brush assembly from entering the first driving assembly, prevent the first driving assembly from being damaged due to short circuit caused by water ingress, and effectively discharge the heat generated during the operation of the first driving assembly to prevent the temperature of the first driving assembly from being too high during operation.

[0039] Since the housing, the positioning part, and the stopping part are integrally formed of plastic material, the overall mass of the housing is effectively reduced, and the overall cost of the first driving assembly of the present disclosure is lowered; moreover, since the mating part of the stator winding and the positioning part in the inner cavity of the housing cooperate with each other, the driving unit can be prevented from rotating relative to the inner cavity of the housing during operation, ensuring that the driving unit can work properly. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0041] Figure 1 is a schematic structural diagram of an embodiment of the cleaning device of the present disclosure;

[0042] Figure 2 is a schematic structural diagram of an embodiment of the floor brush of the present disclosure;

[0043] Figure 3 is an exploded structural diagram of an embodiment of the first driving assembly of the present disclosure;

[0044] Figure 4 is a cross-sectional structural diagram of an embodiment of the first driving assembly of the present disclosure;

[0045] Figure 5 is a schematic structural diagram of an embodiment of the first impeller and the second impeller of the present disclosure;

[0046] Figure 6 is Figure 5 a schematic structural diagram of the first impeller and the second impeller shown from another perspective;

[0047] Figure 7 is a cross-sectional structural diagram of another embodiment of the first driving assembly of the present disclosure;

[0048] Figure 8 is Figure 2 a schematic structural diagram of the floor brush shown from another perspective;

[0049] Figure 9 is Figure 2 a schematic diagram of an embodiment of the side view structure of the floor brush shown;

[0050] Figure 10 is Figure 2 a schematic structural diagram of area A of the floor brush shown;

[0051] Figure 11 is Figure 2 a schematic diagram of another embodiment of the side view structure of the floor brush shown;

[0052] Figure 12 is a structural schematic diagram of another embodiment of the first drive assembly of the present disclosure;

[0053] Figure 13 is a cross-sectional schematic diagram of another embodiment of the first drive assembly of the present disclosure;

[0054] Figure 14 is another cross-sectional schematic diagram of another embodiment of the first drive assembly of the present disclosure;

[0055] Figure 15 is a cross-sectional schematic diagram of a rotor of yet another embodiment of the first drive assembly of the present disclosure;

[0056] Figure 16 It is an axial schematic diagram of the housing of another embodiment of the first drive assembly of the present disclosure.

[0057] Description of reference numerals:

[0058] 10. Cleaning device; 11. Device body; 111. Floor brush; 12. Roller brush cover; 13. Scraper; 20. First drive assembly; 21. Casing; 211. Heat dissipation channel; 2111. First sub-channel; 2112. Second sub-channel; 212. Air outlet; 213. Partition; 2131. Ventilation hole; 214. Positioning part; 215. Stopper; 22. Drive unit; 221. Drive part; 2211. Stator winding; 22111. Matching part; 2212. Rotor; 22121. Ring core; 22122. Magnetic steel; 22123. Copper ring; 222. Speed ​​reduction part; 223. Drive shaft; 224. First bearing; 225. Second bearing; 23. First impeller; 23 1. First blade; 232. First front vertex; 233. First rear vertex; 24. Second impeller; 241. Second blade; 242. Second front vertex; 243. Second rear vertex; 25. Connector; 251. Air inlet; 26. Temperature sensor; 271. Back cover; 272. Third impeller; 273. Coupling; 274. Spring; 275. Handle; 276. Bearing seat; 277. Third bearing; 278. Soft rubber shock-absorbing pad; 279. Sealing ring; 30. Roller brush assembly; 31. Heat-conducting cylinder; 32. Roller brush body; 40. Second drive assembly; 41. Servo; 42. Screw; 43. Push rod; 441. Undercut; 442. Engagement groove; 451. Guide; 452. Guide groove. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure. In the present disclosure, unless otherwise stated, the directional words used, such as "up", "down", "left", and "right", generally refer to the up, down, left, and right of the device in actual use or working state, specifically the drawing direction in the accompanying drawings.

[0060] In the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connected", "stacked" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0061] The present disclosure provides a cleaning device, which is used to clean a surface to be cleaned and includes a device body, a first drive assembly and a roller brush assembly. The first drive assembly is arranged on the device body and includes a casing and a drive unit. A positioning portion extending along the axial direction of the casing is arranged on the inner wall of the casing, and the casing and the positioning portion are constructed as an integral molding; the drive unit includes a stator winding, and a matching portion is arranged on the outer wall of the stator winding. The stator winding is constructed to be installed in the inner cavity of the casing through the matching portion and the positioning portion; the outer surface of the casing is exposed, constituting the outer surface of the first drive assembly; the roller brush assembly is constructed to be sleeved on the outer side of the casing, and is constructed to be transmission-connected to the output end of the drive unit.

[0062] During the installation of the cleaning device disclosed in the present invention, the matching portion of the stator winding of the driving unit is aligned with the positioning portion in the housing, and then the driving unit is pushed axially into the inner cavity of the housing under the guidance of the matching portion and the positioning portion to complete the installation of the driving unit. During the operation of the cleaning device disclosed in the present invention, the driving unit can drive the roller brush assembly sleeved on the outer side of the housing to rotate to clean the surface to be cleaned.

[0063] In the cleaning device of the present disclosure, the housing can prevent water of the roller brush assembly from entering the first drive assembly, prevent the first drive assembly from being damaged due to short circuit caused by water ingress, and effectively discharge the heat generated when the first drive assembly works, preventing the temperature of the first drive assembly from being too high during operation. Moreover, after installation, the outer surface of the housing is exposed, constituting the outer surface of the first drive assembly. Without the need to provide two housings, the overall weight and processing cost of the first drive assembly of the present disclosure can be effectively reduced.

[0064] The present disclosure provides a cleaning device and a drive assembly, which will be described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present disclosure. And in the following embodiments, each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of an embodiment of the cleaning device of the present disclosure, Figure 2 is a schematic structural diagram of an embodiment of the floor brush of the present disclosure.

[0066] In one embodiment, the cleaning device 10 can be a cleaning device such as a floor washer. The user holds the cleaning device 10 by hand and pushes the cleaning device 10 to move on a cleaning surface such as the ground or the surface of an item to be cleaned, so that the cleaning device 10 cleans the area it passes through. Of course, the cleaning device 10 can also be a cleaning device such as a cleaning robot. The cleaning device 10 can move on the cleaning surface by itself, and the cleaning device 10 can clean the area it passes through. The embodiments of the present disclosure are described by taking a floor washer as an example. Figure 2 The floor brush 111 of the cleaning device 10 shown is not limited herein.

[0067] Specifically, the cleaning device 10 includes a device main body 11. For the case where the cleaning device 10 is a floor washer, the device main body 11 may include a floor brush 111. The floor brush 111 is also called a cleaning head or a suction head, and the floor brush 111 is used to clean the cleaning surface. The user holds the main machine by hand to drive the floor brush 111 to move on the cleaning surface, and the floor brush 111 can clean the area it passes through.

[0068] The cleaning device 10 further includes a roller brush assembly 30. The roller brush assembly 30 is connected to the device main body 11. Specifically, the roller brush assembly 30 is arranged on the floor brush 111. The roller brush assembly 30 rotates around its own central axis to clean the cleaning surface.

[0069] The cleaning device 10 further includes a first driving component 20. The first driving component 20 is connected to the device main body 11. Specifically, the first driving component 20 is disposed on the floor brush 111. The first driving component 20 is in transmission connection with the roller brush component 30, and the first driving component 20 is used to drive the roller brush component 30 to rotate.

[0070] Please refer to Figure 3 and Figure 4 , Figure 3 which is an exploded structural schematic diagram of an embodiment of the first driving component of the present disclosure, Figure 4 and which is a sectional structural schematic diagram of an embodiment of the first driving component of the present disclosure. The first driving component 20 of the embodiment of the present disclosure will be described below.

[0071] In one embodiment, the first driving component 20 includes a housing 21, a driving unit 22, a first impeller 23, and a second impeller 24. The housing 21 is connected to the device main body 11. The driving unit 22 is disposed in the housing 21, and the first impeller 23 is in transmission connection with the driving unit 22. The second impeller 24 is fixed to the housing 21. The first impeller 23 and the second impeller 24 are disposed opposite to each other. The driving unit 22 is used to drive the first impeller 23 to rotate relative to the second impeller 24, so that the first impeller 23 guides the air flow to pass through the first impeller 23 and the second impeller 24 in sequence.

[0072] In the above manner, in this embodiment, the first impeller 23 is in transmission connection with the driving unit 22, the second impeller 24 is fixed to the housing 21, and the driving unit 22 drives the first impeller 23 to rotate relative to the second impeller 24, so that the first impeller 23 guides the air flow to pass through the first impeller 23 and the second impeller 24 in sequence, realizing heat dissipation of the first driving component 20. The second impeller 24 is in a static state, which can stabilize the air flow velocity and reduce the resistance, so that the cooperation between the first impeller 23 and the second impeller 24 can improve the air flow efficiency, and thus can improve the heat dissipation effect of the driving component (i.e., the first driving component 20) applied to drive the roller brush component 30.

[0073] Specifically, please refer to Figure 5 and Figure 6, both the first impeller 23 and the second impeller 24 are axial-flow impellers. The first impeller 23 includes first fan blades 231. The first fan blades 231 have a first front vertex 232 and a first rear vertex 233 arranged in sequence along the direction close to the second impeller 24. The first fan blades 231 also have a first direction X1 pointing from the midpoint of the first front vertex 232 to the center of the first rear vertex 233. The second impeller 24 includes second fan blades 241. The second fan blades 241 have a second front vertex 242 and a second rear vertex 243 arranged in sequence along the direction away from the first impeller 23. The second fan blades 241 also have a second direction X2 pointing from the midpoint of the second front vertex 242 to the center of the second rear vertex 243. When the first impeller 23 rotates to a position where the first fan blades 231 are arranged opposite to the second fan blades 241, the included angle θ between the first direction X1 and the second direction X2 satisfies: 75° ≤ θ ≤ 105°, such as 75°, 80°, 85°, 90°, 95°, 100°, 105°, etc.

[0074] By the above method, in this embodiment, by reasonably setting the angle between the first fan blades 231 and the second fan blades 241, it is further beneficial to stabilize the air flow velocity of the second impeller 24 and reduce the resistance, further ensuring that the cooperation between the first impeller 23 and the second impeller 24 can improve the air flow efficiency to improve the heat dissipation effect of the first drive assembly 20. It should be noted that when the first impeller 23 and the second impeller 24 rotate in the same direction, the flow direction of the air flow guided by the first impeller 23 is opposite to the flow direction of the air flow guided by the second impeller 24.

[0075] In one embodiment, the first drive assembly 20 further includes a connecting member 25. The housing 21 is connected to the device main body 11 through the connecting member 25. The connecting member 25 is provided with an air inlet 251. The interior of the housing 21 has a heat dissipation channel 211 communicating with the air inlet 251, and the end of the heat dissipation channel 211 away from the connecting member 25 has an air outlet 212. The first impeller 23 and the second impeller 24 are located in the heat dissipation channel 211. The first impeller 23 is used to guide the air flow to enter the heat dissipation channel 211 from the air inlet 251 and guide the air flow in the heat dissipation channel 211 to be discharged through the air outlet 212. The drive unit 22 is also located in the heat dissipation channel 211. After the air flow enters the heat dissipation channel 211 from the air inlet 251, it dissipates heat from the drive unit 22, and then the air flow in the heat dissipation channel 211 is discharged through the air outlet 212.

[0076] It should be noted that in order to achieve heat dissipation of the first driving component 20, the first impeller 23 is provided in this embodiment. Moreover, since the heat dissipation channel 211 in the first driving component 20 is relatively narrow and the air flow needs to pass through various hole structures, in order to improve the air flow efficiency to enhance the heat dissipation effect, the second impeller 24 is provided in this embodiment. The second impeller 24 is in a static state, which can stabilize the air flow velocity and reduce the resistance, so that the cooperation of the first impeller 23 and the second impeller 24 can improve the air flow efficiency.

[0077] Specifically, the first driving component 20 further includes a partition portion 213. The partition portion 213 is disposed in the heat dissipation channel 211 to divide the heat dissipation channel 211 into a first sub-channel 2111 and a second sub-channel 2112 that are sequentially arranged along the direction away from the connecting member 25. The air outlet 212 is located at the end of the second sub-channel 2112 away from the first sub-channel 2111. The partition portion 213 and the housing 21 are of an integral structure. The partition portion 213 is provided with a through-hole structure so that the first sub-channel 2111 and the second sub-channel 2112 communicate with each other. The driving unit 22 includes a driving portion 221 and a speed reduction portion 222. The driving portion 221 is disposed in the first sub-channel 2111. The speed reduction portion 222 is disposed in the second sub-channel 2112. The driving portion 221 is drivingly connected to the first impeller 23, and the driving portion 221 is also drivingly connected to the brush roller assembly 30 through the speed reduction portion 222. The first impeller 23 is preferably disposed adjacent to the driving portion 221, the second impeller 24 is adjacent to the first impeller 23, and the second impeller 24 is located downstream of the air outlet of the first impeller 23.

[0078] Since there is usually grease in the speed reduction portion 222, in order to prevent the air flow from directly blowing on the speed reduction portion 222, the partition portion 213 is provided in this embodiment. Through-holes for the air flow to pass through are provided at the edge portion of the partition portion 213, that is, the second sub-channel 2112 is formed at the edge position close to the inner wall of the housing 21. The second sub-channel 2112 restricts the air flow to the position close to the inner wall of the housing 21, preventing the air flow from directly blowing on the speed reduction portion 222. Also due to the position of the through-holes on the partition portion 213 and the position of the second sub-channel 2112, the second impeller 24 is provided in this embodiment to stabilize the air flow velocity and reduce the resistance, thereby improving the air flow efficiency.

[0079] The driving portion 221 includes a stator winding and a rotor. The rotor is drivingly connected to the speed reduction portion 222 through a driving shaft 223. Specifically, the first impeller 23 is drivingly connected to the driving shaft 223, and the rotor drives the first impeller 23 and the driving shaft 223 to rotate synchronously. The speed reduction portion 222 may include a speed reduction gearbox, etc. The speed reduction portion 222 is also drivingly connected to the brush roller assembly 30 through a coupling 273.

[0080] The first impeller 23 and the second impeller 24 are located in the first sub-channel 2111, and the first impeller 23 and the second impeller 24 are arranged in sequence along the direction close to the second sub-channel 2112. That is, the first impeller 23 and the second impeller 24 are arranged in sequence in the air flow direction. The projections of the first impeller 23 and the second impeller 24 in the direction perpendicular to the air flow direction do not overlap. The first impeller 23 and the second impeller 24 are located between the driving part 221 and the separating part 213. The driving shaft 223 passes through the separating part 213 and is in transmission connection with the speed reducing part 222. During the process of the driving unit 22 driving the brush roller assembly 30, the driving part 221 drives the speed reducing part 222 through the driving shaft 223, so that the speed reducing part 222 drives the brush roller assembly 30 to rotate. The driving shaft 223 synchronously drives the first impeller 23 to rotate, so that the first impeller 23 guides the external air flow to first enter the first sub-channel 2111 from the air inlet 251. After that, the first impeller 23 continues to guide the air flow to pass through the first sub-channel 2111 and the second sub-channel 2112 in sequence, and then is discharged through the air outlet 212. The air flow direction is as Figure 4 shown by the dotted arrow in

[0081] Of course, in other embodiments of the present disclosure, the air inlet 251 can be arranged at other positions of the floor brush 111. An inlet flow channel is arranged in the connecting piece 25, and the inlet flow channel communicates the air inlet 251 with the heat dissipation channel 211. The external air flow enters the floor brush 111 through the air inlet 251, and the air flow enters the heat dissipation channel 211 through the inlet flow channel in the connecting piece 25.

[0082] Please refer to Figure 7 , Figure 7 which is a schematic cross-sectional structure diagram of another embodiment of the first driving assembly of the present disclosure.

[0083] In an alternative embodiment, the difference between this embodiment and the above embodiment is that the second impeller 24 and the housing 21 are of an integral structure. The second impeller 24 divides the heat dissipation channel 211 into a first sub-channel 2111 and a second sub-channel 2112 which are arranged in sequence along the direction away from the connecting piece 25, and the first impeller 23 is located in the first sub-channel 2111. In this way, in this embodiment, the second impeller 24 is used to separate the first sub-channel 2111 and the second sub-channel 2112, omitting the separating part 213 in the above embodiment, which is beneficial to simplifying the structure of the first driving assembly 20 and making the axial structure of the first driving assembly 20 more compact.

[0084] In one embodiment, the driving assembly includes a housing 21, a driving unit 22, a first impeller 23, and a second impeller 24. The housing 21 is used to connect to the device main body 11 of the cleaning device 10. The driving unit 22 is disposed in the housing 21. The first impeller 23 is in transmission connection with the driving unit 22. The driving unit 22 is further used to be in transmission connection with the brush roller assembly 30 of the cleaning device 10. The second impeller 24 is fixed to the housing 21. The first impeller 23 and the second impeller 24 are oppositely arranged. The driving unit 22 is used to drive the first impeller 23 to rotate relative to the second impeller 24, so that the first impeller 23 guides the airflow to pass through the first impeller 23 and the second impeller 24 in sequence.

[0085] It should be noted that the driving assembly in this embodiment is the first driving assembly 20 described in the above embodiment, and will not be elaborated here.

[0086] Please refer to Figure 8 , Figure 8 is Figure 2 a schematic structural view of another perspective of the cleaning device shown.

[0087] In one embodiment, considering that the brush roller assembly 30 is usually in a wet and humid state after cleaning work or after self-cleaning, which is likely to cause problems such as mildew, bacteria growth, and odor. In view of this, the heat generated by the operation of the first driving assembly 20 in this embodiment can be conducted to the brush roller assembly 30 to dry the brush roller assembly 30.

[0088] The driving unit 22 of the first driving assembly 20 can be a brushless motor or the like. Specifically, the driving unit 22 includes a stator winding, a rotor, and a wire package. The stator winding is fixed to the housing 21. The rotor is rotatably disposed in the space surrounded by the stator winding. The wire package is disposed on the stator winding. During the process of the driving unit 22 driving the brush roller assembly 30 to rotate, the heat generated by the wire package is conducted to the brush roller assembly 30 through the housing 21 to dry the brush roller assembly 30.

[0089] It should be noted that a brushed motor is not applicable to the driving unit 22 in this embodiment. The reason is that when a brushed motor operates, its wire package does not generate heat, but the magnetic tile generates heat, and if the temperature of the magnetic tile is too high, it will cause the magnetic tile to demagnetize. Therefore, a brushed motor is not applicable to the application environment in this embodiment where heat is generated by the first driving assembly 20 to dry the brush roller assembly 30.

[0090] Further, the rotary brush assembly 30 includes a heat-conducting cylinder body 31 and a rotary brush body 32. The heat-conducting cylinder body 31 is in transmission connection with the driving unit 22. The rotary brush body 32 is disposed around the outer periphery of the heat-conducting cylinder body 31. Specifically, the heat-conducting cylinder body 31 is sleeved into the machine housing 21 from the side away from the connecting member 25, and the heat-conducting cylinder body 31 is sleeved on the outer periphery of the machine housing 21, so that the heat-conducting cylinder body 31 is in transmission connection with the driving unit 22. The rotary brush body 32 is used for cleaning work. Specifically, the rotary brush body 32 is used for wiping the surface to be cleaned. The rotary brush body 32 can be rotary brush villi, a rag, a brush, etc. The heat generated by the operation of the driving unit 22 is conducted to the rotary brush body 32 through the heat-conducting cylinder body 31 to dry the rotary brush body 32. The heat-conducting cylinder body 31 and the machine housing 21 of the first driving assembly 20 have good heat-conducting performance. For example, they can be made of materials such as metal, so that the heat of the driving unit 22 can be efficiently conducted to the rotary brush body 32 to dry the rotary brush body 32.

[0091] Please refer to Figure 9 , Figure 9 is Figure 2 a schematic diagram of a side view structure of an embodiment of the cleaning device shown.

[0092] In one embodiment, the cleaning device 10 further includes a second driving assembly 40 and an interference member. The second driving assembly 40 is disposed on the device main body 11. The interference member is in transmission connection with the second driving assembly 40. The second driving assembly 40 is used to drive the interference member to move relative to the rotary brush assembly 30 to adjust the interference amount between the interference member and the rotary brush assembly 30.

[0093] According to the characteristics of the brushless motor, when the input voltage and the rotational speed of the driving unit 22 are constant, the greater the load of the driving unit 22, the greater the input current of the driving unit 22, and the more heat is generated by the wire package of the driving unit 22. In view of this, in this embodiment, the second driving assembly 40 is used to adjust the interference amount between the interference member and the rotary brush assembly 30 to adjust the load of the driving unit 22, thereby controlling the drying process of the rotary brush assembly 30. It can be understood that the greater the interference amount between the interference member and the rotary brush assembly 30, the greater the load of the driving unit 22, and the smaller the interference amount between the interference member and the rotary brush assembly 30, the smaller the load of the driving unit 22.

[0094] Specifically, the interference member includes a rotary brush cover body 12. The rotary brush cover body 12 is located on the side of the rotary brush assembly 30 away from the surface to be cleaned 50. The rotary brush cover body 12 is in transmission connection with the second driving assembly 40. The second driving assembly 40 is used to drive the rotary brush cover body 12 to move relative to the rotary brush assembly 30 to adjust the interference amount between the rotary brush cover body 12 and the rotary brush assembly 30. In other words, in this embodiment, the second driving assembly 40 is used to adjust the interference amount between the rotary brush cover body 12 and the rotary brush assembly 30 to adjust the load of the driving unit 22, thereby controlling the drying process of the rotary brush assembly 30.

[0095] The second driving component 40 is configured to drive the interfering member to move relative to the device main body 11. Please refer to Figure 10 simultaneously. The second driving component 40 includes a servo 41, a screw 42, and a push rod 43. The servo 41 is disposed on the device main body 11. The screw 42 is drivingly connected to one of the servo 41 and the interfering member, the push rod 43 is drivingly connected to the other of the servo 41 and the interfering member, the push rod 43 is in threaded engagement with the screw 42, and the servo 41 cooperates with the screw 42 through the push rod 43 to drive the interfering member to move. Figure 10 Exemplarily shown is the case where the screw 42 is drivingly connected to the servo 41, the screw 42 is drivingly connected to the push rod 43, and the push rod 43 is drivingly connected to the interfering member. The servo 41 is used to drive the screw 42 to rotate, and the rotation axis of the screw 42 is parallel to the traveling direction of the device main body 11. With the rotation of the screw 42, through the threaded engagement between the screw 42 and the push rod 43, the push rod 43 drives the interfering member to move along the traveling direction of the device main body 11. Moreover, by the forward and reverse rotation of the servo 41, the push rod 43 can be driven to drive the interfering member to move back and forth along the traveling direction of the device main body 11.

[0096] It should be noted that the second driving component 40 is used to drive the interfering member to switch between the first state and the second state. The interference amount between the interfering member in the first state and the brush roller assembly 30 is less than the interference amount between the interfering member in the second state and the brush roller assembly 30. Taking the second driving component 40 driving the interfering member to move along the traveling direction of the device main body 11 as an example, the interfering member in the first state is closer to the servo 41 than the interfering member in the second state. Taking the brush roller cover 12 as an example, the brush roller cover 12 in the first state can be spaced apart from the brush roller assembly 30, that is, the brush roller cover 12 in the first state does not interfere with the brush roller assembly 30. In the second state, under the forward pushing action of the push rod 43, the brush roller cover 12 rotates forward and downward to interfere with the brush roller assembly 30.

[0097] The first driving component 20 further includes a current sensor, and the current sensor is used to detect the current value of the driving unit 22, specifically, to detect the current value input to the driving unit 22. During the drying process of the brush roller assembly 30, when the current sensor detects that the current value of the driving unit 22 is less than the first current threshold, the second driving component 40 drives the interfering member to switch from the first state to the second state until the current sensor detects that the current value of the driving unit 22 is greater than or equal to the second current threshold. The first current threshold is less than the second current threshold. The first current threshold is defined as the minimum current value of the driving unit 22 when the interfering member is in the first state and the brush roller assembly 30 is in a dry state. The second current threshold is defined as the maximum current value to ensure the normal operation of the electronic components.

[0098] As Figure 8As shown, the first driving component 20 further includes a temperature sensor 26, which is disposed close to the driving unit 22 and is used to detect the temperature value of the driving unit 22. Optionally, the temperature sensor 26 may be an NTC (Negative Temperature Coefficient thermistor), etc. During the drying process of the roller brush assembly 30, when the temperature sensor 26 detects that the temperature value of the driving unit 22 is greater than the second temperature threshold, the second driving component 40 drives the interference member to switch to the first state; and when the temperature sensor 26 detects that the temperature value of the driving unit 22 is less than the first temperature threshold, the second driving component 40 drives the interference member to switch to the second state. The first temperature threshold is less than the second temperature threshold, and the second temperature threshold is defined as the highest temperature to ensure the normal operation of electronic components.

[0099] The drying process of the rotary brush assembly 30 is as follows: upon receiving a drying instruction, the driving unit 22 is activated, and the rotary brush assembly 30 rotates. At this time, the interference member is in the first state. When the current sensor detects that the current value of the driving unit 22 is less than the first current threshold, the servo 41 is activated to drive the push rod 43 forward, increasing the interference amount between the interference member and the rotary brush assembly 30, causing the load of the driving unit 22 to increase, and thus increasing the current input to the driving unit 22. When the current sensor detects that the current value of the driving unit 22 is greater than or equal to the second current threshold, the servo 41 stops driving the push rod 43 forward. At this time, the interference member moves to the second state, maintaining the current current level input to the driving unit 22. The temperature of the wire coil of the driving unit 22 rises, and the heat is conducted to the rotary brush body 32 through the machine housing 21 and the heat-conducting cylinder 31 to dry the rotary brush body 32. During this process, the temperature sensor 26 continuously detects the temperature of the driving unit 22. When the temperature sensor 26 detects that the temperature value of the driving unit 22 is greater than the second temperature threshold, the servo 41 resets, that is, drives the push rod 43 backward to reset the interference member to the first state, reducing the interference amount between the interference member and the rotary brush assembly 30, reducing the load of the driving unit 22 to reduce the heat generation of the driving unit 22, and thus causing the temperature of the driving unit 22 to drop. At this time, the current input to the driving unit 22 decreases to the first current threshold. When the temperature sensor 26 detects that the temperature value of the driving unit 22 is less than the first temperature threshold, the servo 41 continues to be powered on and runs, driving the push rod 43 forward again to switch the interference member to the first state to increase the interference amount between the interference member and the rotary brush assembly 30 again. This process is repeated in a cycle to control the temperature value of the driving unit 22 between the first temperature threshold and the second temperature threshold to dry the rotary brush body 32. Considering that the rotary brush body 32 is relatively fluffy after drying, that is, the interference amount between the dry rotary brush assembly 30 and the interference member is greater than that between the wet rotary brush assembly 30 and the interference member, when the interference member is in the first state and the current sensor detects that the current value of the driving unit 22 is greater than or equal to the first current threshold, the drying of the rotary brush assembly 30 is stopped, and at this time, the rotary brush assembly 30 is dried. During the drying process, the suction motor for generating negative pressure for dirt suction in the cleaning device 10 can operate to suck air, sucking away the water vapor generated by the rotary brush assembly 30 during the drying process.

[0100] It should be noted that, in the present embodiment, the current value of the drive unit 22 is first used as the condition for the interference member to move. After the current value of the drive unit 22 is stabilized, the drive unit 22 continues to generate heat, causing the temperature to continue to rise. In order to maintain normal operation, the temperature of the drive unit 22 is continuously detected at the stable current value, and when the temperature of the drive unit 22 reaches the threshold, the temperature is used as the condition for the interference member to move. Moreover, in other embodiments of the present disclosure, when a drying instruction is received, the current value of the drive unit 22 may not be detected, but the interference member may be directly controlled to move to increase the amount of interference between the interference member and the roller brush assembly 30. This is because when the roller brush assembly 30 is in a wet state, the current sensor detects that the current value of the drive unit 22 is usually less than the first current threshold. This can simplify the control logic of the drying process of the roller brush assembly 30 in the present embodiment.

[0101] In addition, the cleaning device 10 also includes a scraper bar 13. The scraper bar 13 is disposed on the device body 11 or the roller brush cover 12, and the scraper bar 13 interferes with the roller brush assembly 30, and the scraper bar 13 is used to scrape off dirt on the roller brush assembly 30. When the roller brush assembly 30 is dried, the drive unit 22 drives the roller brush assembly 30 to rotate in a first rotation direction. When the drying of the roller brush assembly 30 is finished, the drive unit 22 drives the roller brush assembly 30 to rotate in a second rotation direction, and the first rotation direction is opposite to the second rotation direction. In this way, when the drying of the roller brush assembly 30 is finished, the present embodiment drives the roller brush assembly 30 to rotate in the opposite direction, so as to use the scraper bar 13 to turn up the fluff on the roller brush body 32, which is beneficial to extend the service life of the roller brush assembly 30.

[0102] Of course, in other embodiments of the present disclosure, the second drive component 40 is not limited to the above-mentioned servo 41, screw 42 and push rod 43. The second drive component 40 can also be designed with a cylinder, connecting rod mechanism, etc., which can drive the interference member to move along the travel direction of the device body 11.

[0103] Furthermore, if Figure 10 As shown, one of the push rod 43 and the interference member is provided with an undercut 441, and the other is provided with a buckle groove 442, and the undercut 441 is embedded in the buckle groove 442, so that the push rod 43 is transmission-connected with the interference member. Figure 10 It is exemplarily shown that the interference piece is provided with an undercut 441 and the push rod 43 is provided with a snap-fit ​​groove 442 .

[0104] For further information, please also refer to Figure 11 One of the device body 11 and the interference member is provided with a guide member 451, and the other is provided with a guide groove 452. The guide member 451 is movably embedded in the guide groove 452, and the guide member 451 moves along the guide groove 452 to guide the movement of the interference member. Figure 11The interference member is provided with a guide member 451, and the device body 11 is provided with a guide groove 452. The guide groove 452 extends in an arc transition, and the guide member 451 and the guide groove 452 cooperate to guide the interference member to move forward, and also guide the end of the interference member away from the servo 41 to rotate toward the surface to be cleaned, so that the interference member squeezes the roller brush assembly 30 and increases the interference amount between the interference member and the roller brush assembly 30. Similarly, the guide member 451 and the guide groove 452 cooperate to guide the interference member to move backward, and also guide the end of the interference member away from the servo 41 to rotate in a direction away from the surface to be cleaned, so that the interference member is away from the roller brush assembly 30 and reduces the interference amount between the interference member and the roller brush assembly 30.

[0105] Of course, in other embodiments of the present disclosure, the second drive component 40 can drive the interference member to move along the travel direction of the device body 11, that is, drive the interference member to move forward and backward to adjust the interference amount between the roller brush cover 12 and the roller brush assembly 30; or, the second drive component 40 can drive the interference member to rotate relative to the device body 11 to adjust the interference amount between the roller brush cover 12 and the roller brush assembly 30, which is not limited here.

[0106] In an alternative embodiment, the present embodiment is different from the above-mentioned embodiment in that the interference member includes a scraper bar 13. The scraper bar 13 is in transmission connection with the second drive assembly 40, and the second drive assembly 40 is used to drive the scraper bar 13 to move relative to the roller brush assembly 30 to adjust the amount of interference between the scraper bar 13 and the roller brush assembly 30. In other words, the present embodiment adjusts the amount of interference between the scraper bar 13 and the roller brush assembly 30 through the second drive assembly 40 to adjust the load size of the drive unit 22, thereby controlling the drying process of the roller brush assembly 30.

[0107] like Figures 11 to 15 As shown, the present disclosure provides a cleaning device 10, which is used to clean a surface to be cleaned, and includes a device body 11, a first drive assembly 20 and a roller brush assembly 30. The first drive assembly 20 is arranged on the device body 11, and includes a casing 21 and a drive unit 22. A positioning portion 214 extending along its axial direction is arranged on the inner wall of the casing 21, and the casing 21 and the positioning portion 214 are constructed as an integral molding; the drive unit 22 includes a stator winding 2211, and the outer wall of the stator winding 2211 is provided with a matching portion 22111, and the stator winding 2211 is constructed to be installed in the inner cavity of the casing 21 through the matching portion 22111 and the positioning portion 214; the outer surface of the casing is exposed, constituting the outer surface of the first drive assembly; the roller brush assembly 30 is constructed to be sleeved on the outer side of the casing 21, and is constructed to be transmission-connected to the output end of the drive unit 22.

[0108] During the installation of the cleaning device 10 of the present disclosure, the mating portion 22111 of the stator winding 2211 of the drive unit 22 is aligned with the positioning portion 214 within the housing 21, and then the drive unit 22 is axially pushed into the inner cavity of the housing 21 under the guiding fit between the mating portion 22111 and the positioning portion 214 to complete the installation of the drive unit 22. During the operation of the cleaning device 10 of the present disclosure, the drive unit 22 can drive the rotary brush assembly 30 sleeved outside the housing 21 to rotate to clean the surface to be cleaned.

[0109] In the cleaning device 10 of the present disclosure, the housing 21 can prevent the water of the rotary brush assembly 30 from entering the first drive assembly 20, prevent the first drive assembly 20 from being damaged due to short circuit caused by water ingress, and effectively discharge the heat generated when the first drive assembly 20 operates, preventing the temperature of the first drive assembly 20 from being too high during operation. Moreover, after the installation is completed, the outer surface of the housing 21 is exposed and constitutes the outer surface of the first drive assembly 20. There is no need to provide two housings, which can effectively reduce the overall weight and processing cost of the first drive assembly 20 of the present disclosure.

[0110] Further, in an embodiment of the present disclosure, a stop portion 215 extending radially along the inner wall of the housing 21 is further provided. The housing 21, the positioning portion 214, and the stop portion 215 are configured to be integrally formed of a plastic material, and the end face of the stator winding 2211 is configured to abut against the stop portion 215.

[0111] During the installation of the cleaning device 10 of the present disclosure, the mating portion 22111 of the stator winding 2211 of the drive unit 22 is aligned with the positioning portion 214 within the housing 21, and then the drive unit 22 is axially pushed into the inner cavity of the housing 21 under the guiding fit between the mating portion 22111 and the positioning portion 214 until the end face of the stator winding 2211 abuts against the stop portion 215 extending radially along the inner wall of the housing 21 to complete the installation of the drive unit 22. In order to improve the connection strength, the stator winding 2211 can be fixed in the inner cavity of the housing 21 by means of adhesive connection. During the operation of the cleaning device 10 of the present disclosure, the drive unit 22 can drive the rotary brush assembly 30 sleeved outside the housing 21 to rotate to clean the surface to be cleaned.

[0112] In the cleaning device 10 of the present disclosure, the housing 21 can prevent the water of the roller brush assembly 30 from entering the first drive assembly 20, prevent the first drive assembly 20 from being damaged due to short - circuit caused by water ingress, and effectively discharge the heat generated when the first drive assembly 20 works, preventing the temperature of the first drive assembly 20 from being too high during operation. Since the housing 21, the positioning portion 214, and the stopping portion 215 are integrally formed of plastic material, the overall mass of the housing 21 is effectively reduced, and the overall cost of the first drive assembly 20 of the present disclosure is reduced; moreover, since the mating portion 22111 of the stator winding 2211 cooperates with the positioning portion 214 in the inner cavity of the housing 21, even when the adhesive between the stator winding 2211 and the inner cavity of the housing 21 fails, it can still prevent the drive unit 22 from rotating relative to the inner cavity of the housing 21 during operation, ensuring that the drive unit 22 can work properly.

[0113] Specifically, in an embodiment of the present disclosure, in order to ensure the overall performance of the housing 21, the positioning portion 214, and the stopping portion 215, the housing 21, the positioning portion 214, and the stopping portion 215 can be integrally formed of glass - fiber - reinforced polyphenylene sulfide (PPS). The proportion of glass fiber can be 40%, so as to ensure that the obtained housing 21, positioning portion 214, and stopping portion 215 have extremely low shrinkage rate, relatively high hardness, high temperature resistance and other characteristics.

[0114] As Figure 11 and Figure 12 shown, in an embodiment of the present disclosure, the cleaning device 10 of the present disclosure further includes a rear cover 271. The drive unit 22 is disposed in the space jointly enclosed by the rear cover 271 and the housing 21; the drive unit 22 of the present disclosure further includes a rotor 2212. A drive shaft 223 is fixedly disposed inside the rotor 2212. The output end of the drive shaft 223 is in transmission connection with the reduction portion 222, and the reduction portion 222 can be in transmission connection with the roller brush assembly 30.

[0115] As Figure 11 and Figure 12 shown, in an embodiment of the present disclosure, a first bearing 224 and a second bearing 225 are disposed on the drive shaft 223. The drive shaft 223 is rotatably connected to the housing 21 through the first bearing 224 and rotatably connected to the rear cover 271 through the second bearing 225. A first mounting hole for accommodating the first bearing 224 can be provided on the housing 21, and a second mounting hole for accommodating the second bearing 225 can be provided on the rear cover 271. The first bearing 224 is fixed in the first mounting hole by means of adhesive or the like, and the second bearing 225 is fixed in the second mounting hole by means of adhesive or the like.

[0116] As Figure 14As shown, the rotor 2212 assembly includes an annular core 22121, a magnetic steel 22122 and two copper rings 22123 arranged on both sides of the annular core 22121. The annular core 22121 is sleeved on the drive shaft 223, and the magnetic steel 22122 is sleeved on the annular core 22121. The magnetic steel 22122 and the annular core 22121 can be connected by glue, and matching grooves and protrusions can be set between the magnetic steel 22122 and the annular core 22121 (not shown in the figure) to prevent the glue between the magnetic steel 22122 and the annular core 22121 from failing, ensuring that the rotation torque of the magnetic steel 22122 can be transmitted to the drive shaft 223 through the annular core 22121. Figure 14 As shown, the two copper rings 22123 are both interference fit with the drive shaft 223 and are respectively located at the two ends of the annular core 22121. The two copper rings 22123 are used to adjust the left and right imbalances on both sides of the rotor 2212 so that the imbalances on both ends are maintained below the set threshold. In order to ensure that the drive unit 22 runs stably and the vibration and noise can meet the requirements, the imbalances on both ends of the rotor 2212 can be set to less than 8 mg.

[0117] like Figure 11 As shown, in one embodiment of the present disclosure, the driving assembly includes a third impeller 272, and the third impeller 272 can be controlled to rotate by the driving shaft 223, so as to guide the airflow to pass through the driving unit 22, the third impeller 272 and the speed reduction part 222 in sequence to take away the heat on the driving unit 22 and the speed reduction part 222.

[0118] like Figure 15 As shown, in one embodiment of the present disclosure, a partition 213 is provided on the casing 21, and the partition 213 can separate the driving unit 22 and the speed reduction part 222. The partition 213 is provided with ventilation holes 2131 to ensure that the airflow can pass through the driving unit 22, the third impeller 272 and the speed reduction part 222 in sequence to take away the heat from the driving unit 22 and the speed reduction part 222.

[0119] like Figure 11 and Figure 12 As shown, in one embodiment of the present disclosure, the first drive assembly 20 of the present disclosure also includes a coupling 273, and the roller brush assembly 30 is constructed to be transmission-connected to the drive unit 22 through the coupling 273; the coupling 273 is fixed to the side of the speed reduction portion 222 away from the drive unit 22, and the drive unit 22 and the speed reduction portion 222 are located in a cavity surrounded by the casing 21. When the roller brush is detached from the first drive assembly 20, the coupling 273 is located outside the cavity surrounded by the casing 21. When the roller brush is installed on the first drive assembly 20, the coupling 273 partially extends into the cavity surrounded by the casing 21.

[0120] When the roller brush is detached from the first driving assembly 20, the coupling 273 is located outside the cavity surrounded by the housing 21, thereby closing the air outlet 212 on the side where the coupling 273 is located, and preventing external water from entering the interior of the housing 21 through the air outlet 212; when the roller brush is installed on the first driving assembly 20, the coupling 273 partially extends into the cavity surrounded by the housing 21, so that the air outlet 212 on the side where the coupling 273 is located is opened, and the third impeller 272 can form an air flow passing through the cleaning device 10.

[0121] Specifically, a spring 274 that can axially expand and contract is provided on the drive shaft 223. One end of the spring 274 abuts against the reduction part 222, and the other end abuts against the coupling 273, so that the coupling 273 can move axially. When the roller brush is installed on the coupling 273, the coupling 273 compresses the spring 274, so that the air outlet 212 on the side where the coupling 273 is located is opened, and the third impeller 272 can form an air flow passing through the cleaning device 10; when the roller brush is removed from the coupling 273, the spring 274 can push the coupling 273 to abut against the housing 21, thereby closing the air outlet 212 on the side where the coupling 273 is located, and preventing external water from entering the interior of the housing 21 through the air outlet 212. Specifically, as Figure 12 shown, the spring 274 can push the coupling 273 to abut against the sealing ring 279 on the housing 21 to ensure good sealing at the air outlet 212.

[0122] As Figure 12 shown, in an embodiment of the present disclosure, the cleaning device 10 of the present disclosure further includes a handle 275. The handle 275 is connected by an integral plastic shell, and an air inlet 251 communicating with the interior of the housing 21 is formed on the handle 275. The third impeller 272 can guide the air flow from the air inlet 251 into the interior of the housing 21.

[0123] To facilitate the installation of the roller brush, a bearing seat 276 is further provided between the handle 275 and the housing 21. A third bearing 277 is sleeved on the bearing seat 276. The roller brush is rotatably connected to the bearing seat 276 through the third bearing 277. In this way, the bearing seat 276 can effectively support the rotation of the roller brush. As Figure 12 shown, a soft rubber shock pad 278 is provided between the handle 275 and the housing 21. The soft rubber shock pad 278 can effectively prevent the vibration generated when the driving unit 22 works from being transmitted to the device main body 11.

[0124] The technical solutions provided by the embodiments of the present disclosure will be described below in combination with specific application scenarios.

[0125] Application scenario 1:

[0126] The cleaning device 10 is a floor washer. The floor brush 111 of the cleaning device 10 is provided with a roller brush assembly 30 and a first driving assembly 20. The first driving assembly 20 includes a housing 21, a driving unit 22, a first impeller 23 and a second impeller 24. The driving unit 22 is arranged in the housing 21, and the first impeller 23 is in transmission connection with the driving unit 22. The second impeller 24 is fixed to the housing 21. The first impeller 23 and the second impeller 24 are arranged opposite to each other, and the driving unit 22 is used to drive the first impeller 23 to rotate relative to the second impeller 24, so that the first impeller 23 guides the air flow to pass through the first impeller 23 and the second impeller 24 in sequence.

[0127] The first impeller 23 includes first fan blades 231. The first fan blades 231 have a first front vertex 232 and a first rear vertex 233 arranged in sequence along the direction close to the second impeller 24. The first fan blades 231 also have a first direction pointing from the midpoint of the first front vertex 232 to the center of the first rear vertex 233. The second impeller 24 includes second fan blades 241. The second fan blades 241 have a second front vertex 242 and a second rear vertex 243 arranged in sequence along the direction away from the first impeller 23. The second fan blades 241 also have a second direction pointing from the midpoint of the second front vertex 242 to the center of the second rear vertex 243. When the first impeller 23 rotates to a position where the first fan blades 231 and the second fan blades 241 are arranged opposite to each other, the included angle θ between the first direction and the second direction satisfies: 75° ≤ θ ≤ 105°. When the first impeller 23 and the second impeller 24 rotate in the same direction, the flow direction of the air flow guided by the first impeller 23 is opposite to the flow direction of the air flow guided by the second impeller 24.

[0128] The driving unit 22 drives the first impeller 23 to rotate relative to the second impeller 24, so that the first impeller 23 guides the air flow to pass through the first impeller 23 and the second impeller 24 in sequence, realizing heat dissipation of the first driving assembly 20. The second impeller 24 is in a static state, which can stabilize the air flow velocity and reduce the resistance, so that the cooperation between the first impeller 23 and the second impeller 24 can improve the air flow circulation efficiency, and thus can improve the heat dissipation effect of the driving assembly (i.e., the first driving assembly 20) applied to drive the roller brush assembly 30.

[0129] Application scenario two:

[0130] The cleaning device 10 is a floor scrubber. The floor brush 111 of the cleaning device 10 is provided with a roller brush assembly 30, a first drive assembly 20, a second drive assembly 40 and an interference member. The first drive assembly 20 includes a housing 21 and a drive unit 22. The drive unit 22 includes a stator winding, a rotor and a coil. The stator winding is fixed to the housing 21, the rotor is rotatably arranged in the space surrounded by the stator winding, and the coil is arranged on the stator winding. The roller brush assembly 30 includes a heat-conducting cylinder 31 and a roller brush body 32. The heat-conducting cylinder 31 is transmission-connected to the drive unit 22, and the roller brush body 32 is arranged around the outer periphery of the heat-conducting cylinder 31. The heat generated by the coil is sequentially conducted to the roller brush body 32 through the housing 21 and the heat-conducting cylinder 31 to dry the roller brush body 32. The housing 21 is a closed structure, which can reduce the heat loss of the drive unit 22, so that the heat of the drive unit 22 is conducted to the roller brush body 32 through the housing 21 as much as possible.

[0131] The interference part includes a roller brush cover 12, which is located on the side of the roller brush assembly 30 away from the surface to be cleaned. The roller brush cover 12 is transmission-connected to a second drive assembly 40, which is used to drive the roller brush cover 12 to move relative to the roller brush assembly 30 to adjust the amount of interference between the roller brush cover 12 and the roller brush assembly 30.

[0132] The drying process of the rotatable brush assembly 30 is specifically as follows: upon receiving a drying instruction, the driving unit 22 is activated, the rotatable brush assembly 30 rotates, the interference member is in the first state, and the rotatable brush assembly 30 is in a wet state. The current sensor detects that the current value of the driving unit 22 is I3. At this time, the current sensor detects that the current value of the driving unit 22 is less than the first current threshold I1, and the servo 41 is activated to drive the push rod 43 to move forward, increasing the interference amount between the interference member and the rotatable brush assembly 30, increasing the load of the driving unit 22, and thus increasing the current input to the driving unit 22. When the current sensor detects that the current value of the driving unit 22 is greater than or equal to the second current threshold I2 (I3 < I1 < I2), the servo 41 stops driving the push rod 43 to move forward. At this time, the interference member moves to the second state, maintaining the current level of the current input to the driving unit 22. The temperature of the wire coil of the driving unit 22 rises, and the heat is conducted to the rotatable brush body 32 through the machine housing 21 and the heat-conducting cylinder 31 to dry the rotatable brush body 32. During this process, the temperature sensor 26 continuously detects the temperature of the driving unit 22. When the temperature sensor 26 detects that the temperature value of the driving unit 22 is greater than the second temperature threshold T2, the servo 41 is reset, that is, it drives the push rod 43 to move backward, resetting the interference member to the first state, reducing the interference amount between the interference member and the rotatable brush assembly 30, reducing the load of the driving unit 22 to reduce the heat generation of the driving unit 22, and thus reducing the temperature of the driving unit 22. At this time, the current input to the driving unit 22 decreases to the first current threshold I1. When the temperature sensor 26 detects that the temperature value of the driving unit 22 is less than the first temperature threshold T1, the servo 41 continues to be powered on and runs, driving the push rod 43 to move forward again, switching the interference member to the first state to increase the interference amount between the interference member and the rotatable brush assembly 30 again. This process is repeated cyclically to control the temperature value of the driving unit 22 to be between the first temperature threshold T1 and the second temperature threshold T2 to dry the rotatable brush body 32. Considering that the rotatable brush body 32 is relatively fluffy after drying, that is, the interference amount between the dry rotatable brush assembly 30 and the interference member is greater than the interference amount between the wet rotatable brush assembly 30 and the interference member, when the interference member is in the first state and the current sensor detects that the current value of the driving unit 22 is greater than or equal to the first current threshold I1, the drying of the rotatable brush assembly 30 is stopped. At this time, the rotatable brush assembly 30 is dried. During the drying process, the suction motor for generating negative pressure for dirt suction in the cleaning device 10 can operate to suck air, sucking away the water vapor generated by the rotatable brush assembly 30 during the drying process.

[0133] The above has provided a detailed introduction to the cleaning device and the drive assembly provided by the present disclosure. Specific examples are used in this article to elaborate on the principles and implementation manners of the present disclosure. The description of the above embodiments is only used to help understand the method and its core idea of the present disclosure; at the same time, for those of ordinary skill in the art, according to the idea of the present disclosure, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present disclosure.

Claims

1. A cleaning device (10), characterized in that: include: Device body (11); A first drive assembly (20), the first drive assembly (20) being arranged on the device body (11), and comprising a housing (21) and a drive unit (22), wherein a positioning portion (214) extending along the axial direction of the housing (21) is arranged on the inner wall of the housing (21), and the housing (21) and the positioning portion (214) are configured to be integrally formed; the drive unit (22) comprising a stator winding (2211), wherein a matching portion (22111) is arranged on the outer wall of the stator winding (2211), and the stator winding (2211) is configured to be installed in the inner cavity of the housing (21) through the guidance of the matching portion (22111) and the positioning portion (214); and the outer surface of the housing is exposed, constituting the outer surface of the first drive assembly; A roller brush assembly (30), the roller brush assembly (30) being configured to be sleeved on the outside of the housing (21) and being configured to be drivingly connected to the output end of the drive unit (22).

2. The cleaning device (10) according to claim 1, characterized in that A stopper (215) extending in the radial direction is also provided on the inner wall of the housing (21); the housing (21), the positioning portion (214) and the stopper (215) are constructed to be integrally formed using a plastic material; and the end face of the stator winding (2211) is constructed to abut against the stopper (215).

3. The cleaning device (10) according to claim 2, characterized in that The first driving assembly (20) further comprises a shaft coupling (273) and a speed reducing unit (222), and the roller brush assembly (30) is configured to be drivingly connected to the driving unit (22) via the shaft coupling (273); The coupling (273) is arranged on a side of the deceleration part (222) away from the drive unit (22); the drive unit (22) and the deceleration part (222) are located in a cavity surrounded by the casing (21); when the roller brush is detached from the first drive assembly (20), the coupling (273) is located outside the cavity surrounded by the casing (21); when the roller brush is installed on the first drive assembly (20), the coupling (273) partially extends into the cavity surrounded by the casing (21).

4. The cleaning device (10) according to claim 3, characterized in that The first driving assembly (20) further comprises a first impeller (23) and a second impeller (24); the first impeller (23) is drivingly connected to the driving unit (22); the second impeller (24) is fixed to the housing (21); the first impeller (23) and the second impeller (24) are arranged opposite to each other; the driving unit (22) is used for driving the first impeller (23) to rotate relative to the second impeller (24), so that the first impeller (23) guides the airflow to pass through the first impeller (23) and the second impeller (24) in sequence.

5. The cleaning device (10) according to claim 4, characterized in that The first impeller (23) comprises a first blade (231), the first blade (231) having a first front vertex (232) and a first rear vertex (233) sequentially arranged in a direction close to the second impeller (24), and the first blade (231) also having a first direction pointing from the midpoint of the first front vertex (232) to the center of the first rear vertex (233); the second impeller (24) comprises a second blade (241), the second blade (241) having a second front vertex (242) and a second rear vertex (243) sequentially arranged in a direction away from the first impeller (23), and the second blade (241) also having a second direction pointing from the midpoint of the second front vertex (242) to the center of the second rear vertex (243); when the first impeller (23) rotates until the first blade (231) and the second blade (241) are arranged relative to each other, an angle θ between the first direction and the second direction satisfies: 75°≤θ≤105°.

6. The cleaning device (10) according to claim 5, characterized in that The first driving assembly (20) further comprises a connecting member (25), and the housing (21) is connected to the device body (11) via the connecting member (25); The connecting member (25) is provided with an air inlet (251), the interior of the housing (21) is provided with a heat dissipation channel (211) connected with the air inlet (251), and the end of the heat dissipation channel (211) away from the connecting member (25) is provided with an air outlet (212), the first impeller (23) and the second impeller (24) are located in the heat dissipation channel (211), and the first impeller (23) is used to guide airflow from the air inlet (251) into the heat dissipation channel (211) and guide the airflow in the heat dissipation channel (211) to be discharged through the air outlet (212).

7. The cleaning device (10) according to claim 6, characterized in that The first driving assembly (20) further comprises a partition (213), the partition (213) being arranged in the heat dissipation channel (211) so as to divide the heat dissipation channel (211) into a first sub-channel (2111) and a second sub-channel (2112) which are arranged in sequence in a direction away from the connecting member (25); the first impeller (23) and the second impeller (24) are located in the first sub-channel (2111), and the first impeller (23) and the second impeller (24) are arranged in sequence in a direction close to the second sub-channel (2112); and the air outlet (212) is located at an end of the second sub-channel (2112) away from the first sub-channel (2111); The driving unit (22) comprises a driving part (221), the driving part (221) is arranged in the first sub-channel (2111), the speed reduction part (222) is arranged in the second sub-channel (2112), the driving part (221) is transmission-connected to the first impeller (23), and the driving part (221) is also transmission-connected to the roller brush assembly (30) via the speed reduction part (222).

8. The cleaning device (10) according to any one of claims 1 to 7, characterized in that The cleaning device (10) further comprises: A second driving assembly (40) is disposed on the device body (11); and The interference member is transmission-connected to the second driving assembly (40), and the second driving assembly (40) is used to drive the interference member to move relative to the roller brush assembly (30) to adjust the amount of interference between the interference member and the roller brush assembly (30).

9. The cleaning device (10) according to claim 8, characterized in that The roller brush assembly (30) is used to clean the surface to be cleaned; The interference member comprises: A roller brush cover (12) is located on a side of the roller brush assembly (30) facing away from the surface to be cleaned; or A scraper strip (13), the scraper strip (13) interferes with the roller brush assembly (30), and the scraper strip (13) is used to scrape off dirt on the roller brush assembly (30).

10. The cleaning device (10) according to claim 9, characterized in that The second driving component (40) is used to drive the interference member to switch between a first state and a second state, and the interference amount between the interference member and the roller brush assembly (30) in the first state is smaller than the interference amount between the interference member and the roller brush assembly (30) in the second state; The first drive assembly (20) further comprises: A current sensor, used for detecting a current value of the drive unit (22); Wherein, during the process of drying the roller brush assembly (30), when the current sensor detects that the current value of the drive unit (22) is less than a first current threshold, the second drive assembly (40) drives the interference member to switch from the first state to the second state until the current sensor detects that the current value of the drive unit (22) is greater than or equal to a second current threshold; the first current threshold is less than the second current threshold.

11. The cleaning device (10) according to claim 9, characterized in that The second driving component (40) is used to drive the interference member to switch between a first state and a second state, and the interference amount between the interference member and the roller brush assembly (30) in the first state is smaller than the interference amount between the interference member and the roller brush assembly (30) in the second state; The first drive assembly (20) further comprises: a temperature sensor (26), arranged close to the driving unit (22), the temperature sensor (26) being used to detect a temperature value of the driving unit (22); Wherein, during the process of drying the roller brush assembly (30), when the temperature sensor (26) detects that the temperature value of the drive unit (22) is less than a first temperature threshold, the second drive assembly (40) drives the interference member to switch to the second state, and when the temperature sensor (26) detects that the temperature value of the drive unit (22) is greater than the second temperature threshold, the second drive assembly (40) drives the interference member to switch to the first state; the first temperature threshold is less than the second temperature threshold.

12. The cleaning device (10) according to any one of claims 1 to 7, characterized in that: The roller brush assembly (30) comprises: A heat-conducting cylinder (31) is drivingly connected to the driving unit (22); and The roller brush body (32) is arranged around the outer periphery of the heat-conducting cylinder (31), and the roller brush body (32) is used for cleaning. The heat generated by the operation of the driving unit (22) is conducted to the roller brush body (32) through the heat-conducting cylinder (31) to dry the roller brush body (32).

13. The cleaning device (10) according to any one of claims 1 to 7, characterized in that: When the roller brush assembly (30) is being dried, the driving unit (22) drives the roller brush assembly (30) to rotate in a first rotation direction, and when the drying of the roller brush assembly (30) is finished, the driving unit (22) drives the roller brush assembly (30) to rotate in a second rotation direction, wherein the first rotation direction is opposite to the second rotation direction.

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