CN215738698U - Dust collector and power assembly thereof - Google Patents

Abstract

The embodiment of the application provides a dust collector and a power assembly thereof, and belongs to the technical field of cleaning equipment. The number of the shells is at least two, and the at least two shells enclose a power cavity and an execution cavity which are separated from each other. The battery module is located in the power cavity. The water tank is at least partially located within the execution chamber. Because the battery module is located in the power cavity, the water tank is at least partially located in the execution cavity, and the power cavity and the execution cavity are mutually separated, namely the battery module and the water tank are respectively located in the two separated cavities, the possibility that water in the water tank located in the execution cavity escapes into the power cavity is low, the battery module cannot be damaged due to the fact that the water in the water tank escapes, and the possibility that the battery module is damaged is reduced.

Description

Dust collector and power assembly thereof

Technical Field

The application relates to the technical field of cleaning equipment, in particular to a dust collector and a power assembly thereof.

Background

The appearance of the dust collector changes the habit of cleaning, people have higher and higher requirements for cleaning nowadays, wet cleaning is selected by more and more people, and the dry and wet dust collector well solves the requirements. In the related technology, a part of the dry and wet dust collector is powered by a battery, and in the working process of the dust collector, power is not required to be taken by cables, so that the constraint of the power supply cables on the dust collector is removed, and the dust collector can conveniently clean the ground. However, the battery of the wet and dry vacuum cleaner may be damaged.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a vacuum cleaner and a power assembly thereof, so as to reduce the possibility of damage to the battery module.

In order to achieve the above object, a first aspect of the embodiments of the present application provides a power assembly for a vacuum cleaner, the power assembly including:

the number of the shells is at least two, and at least two shells enclose a power cavity and an execution cavity which are mutually separated;

a battery module located within the power cavity; and

a water tank at least partially located within the execution cavity.

In one embodiment, at least two of the housings are removably connected.

In one embodiment, the housing comprises:

a common portion;

a power case connected with the common part; and

the execution shell is connected to one side, away from the power shell, of the common part;

the common parts of at least two shells and the power shells of at least two shells are enclosed to form the power cavity, and the common parts of at least two shells and the actuating shells of at least two shells are enclosed to form the actuating cavity.

In one embodiment, the common part of at least two of the shells is formed with a first notch, and the common part of the other shell is formed with a first protruding part matched with the first notch, and the first protruding part is clamped in the first notch so as to detachably connect the common part of the one shell with the common part of the other shell;

at least two among the power shell of casing, wherein the power shell of one of them casing is formed with the second notch, and another the power shell of casing is formed with second notch looks adaptation's second bulge, the second bulge joint in the second notch so that one of them the power shell of casing with another the power shell detachably connects of casing.

In one embodiment, the common portion of one of the shells is a first common portion, the first common portion includes a common portion main body and two first groove walls which are oppositely arranged, the common portion main body is respectively connected with the two first groove walls which are oppositely arranged, the common portion main body and the two first groove walls which are oppositely arranged are enclosed into the first notch, the common portion of the other shell is a second common portion, the first protrusion is formed on the second common portion, the second common portion is further formed with a first sealing portion, and the first sealing portions are arranged on two sides of the first protrusion; and labyrinth seals are formed among the public part main body, the first protruding part, the two first groove walls which are oppositely arranged and the first sealing parts on two sides.

In one embodiment, the power shell of one of the shells is a first power shell, the first power shell includes a power shell main body and two oppositely arranged second groove walls, the power shell main body is respectively connected with the two oppositely arranged second groove walls, the power shell main body and the two oppositely arranged second groove walls enclose a second notch, the power shell of the other shell is a second power shell, the second protrusion is formed on the second power shell, a second sealing portion is further formed on the second power shell, and the second sealing portion is arranged on both sides of the second protrusion; and labyrinth seals are formed among the power shell main body, the second protruding part, the two second groove walls which are oppositely arranged and the second sealing parts on the two sides.

In one embodiment, an opening is enclosed between the actuating shells of at least two of the housings, the opening being located on a side of the actuating shells facing away from the common portion, the opening being used for viewing the water tank.

In one embodiment, the common portion of each of the housings, the power housing, and the actuator housing are integrally formed.

In one embodiment, the power assembly further comprises a wet and dry motor located in the execution cavity, the wet and dry motor is provided with a water outlet, the power assembly is provided with a flow guide channel communicated with the water outlet, and the flow guide channel is used for guiding water discharged from the water outlet to the outside of the shell.

In one embodiment, at least two of the housings enclose the flow guide passage.

In one embodiment, the wet and dry motor is located below the battery module.

In one embodiment, the power assembly further comprises a water pump and a spray head, water in the water tank is conveyed to the spray head through the water pump and is sprayed out through the spray head to clean the ground, and the water pump and the spray head are both located below the battery module.

A second aspect of embodiments of the present application provides a vacuum cleaner, including:

a powertrain according to any of the above;

the cleaning floor brush is arranged on the power assembly and used for cleaning the ground.

The power assembly of this application embodiment, because battery module is located the power intracavity, the water tank is located at least partially and carries out the intracavity, power chamber and execution chamber are separated each other, just also means battery module and water tank are located two partitioned cavitys respectively, and the water that is located the water tank in carrying out the chamber is lower to the possibility in power chamber that overflows, just also can not cause the damage to battery module because of the water escape in the water tank, has reduced the impaired possibility of battery module.

Drawings

FIG. 1 is a schematic view of a vacuum cleaner according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view taken at location A-A of FIG. 1;

FIG. 3 is an assembly view of two housings;

FIG. 4 is an enlarged view of FIG. 2 at position C;

FIG. 5 is an enlarged view of FIG. 2 at position D;

FIG. 6 is an enlarged view taken at position B in FIG. 1, with the arrows showing the direction of flow of the water being drawn;

fig. 7 is a schematic view illustrating a state that a power assembly of the vacuum cleaner according to the embodiment of the present disclosure is tilted at a certain angle in an operating state.

Description of reference numerals: a housing 1; a first common portion 11; a common part main body 111; first slot wall 112; a second common portion 12; a first seal portion 121; a first power shell 13; a power housing main body 131; a second slot wall 132; a second power shell 14; the second seal portion 141; an actuator case 15; an opening 151; a first notch 16; the first projecting portion 17; a second notch 18; the second projecting portion 19; a power chamber 1 a; an execution chamber 1 b; a battery module 2; a water tank 3; a dry-wet dual-purpose motor 4; a drain port 41; a flow guide channel 5; a water pump 6; a spray head 7; a powertrain 100; the floor brush 200 is cleaned.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the embodiments of the present application, "upper", "lower", "top", "bottom", orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1, it being understood that these orientation terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application. With reference to fig. 1, the up-down direction is the direction indicated by the arrow R1.

In the description of the embodiment of the present application, the front-back direction is a moving direction in the process of cleaning the floor by the cleaning brush. With reference to fig. 1, the front-rear direction is the direction indicated by the arrow R2.

Before describing the embodiments of the present application, it is necessary to analyze the cause of possible damage to the battery in the related art, and obtain the technical solution of the embodiments of the present application through reasonable analysis.

It will be appreciated that wet and dry cleaners generally have a water tank. In the related art, the water tank and the battery module are not separated from each other in a dry-wet manner, and water in the water tank may escape to the battery module, thereby damaging the battery module.

In view of this, the present embodiment provides a vacuum cleaner, please refer to fig. 1, the vacuum cleaner includes a power assembly 100 and a cleaning brush 200, the cleaning brush 200 is mounted on the power assembly 100, and the cleaning brush 200 is used for cleaning the floor.

In one embodiment, the powertrain 100 provides energy to the cleaning brush 200 to enable the cleaning brush 200 to clean the floor.

In one embodiment, the vacuum cleaner can be a wet and dry vacuum cleaner.

In one embodiment, the vacuum cleaner can be used for cleaning or mopping the floor. Illustratively, the cleaning brush 200 is provided with a cloth for mopping the floor.

In one embodiment, the vacuum cleaner can be a wet or dry wet moppable vacuum cleaner.

Referring to fig. 1, a power assembly 100 according to an embodiment of the present application is applied to a vacuum cleaner 100.

Referring to fig. 1, 2 and 7, a power assembly 100 of the embodiment of the present application includes a housing 1, a battery module 2 and a water tank 3. The number of the shells 1 is at least two, and at least two shells 1 enclose a power cavity 1a and an execution cavity 1b which are separated from each other. The battery module 2 is located within the power chamber 1 a. The water tank 3 is at least partially located within the actuation chamber 1 b. In such a structure, because the battery module 2 is located in the power cavity 1a, the water tank 3 is at least partially located in the execution cavity 1b, and the power cavity 1a and the execution cavity 1b are separated from each other, which means that the battery module 2 and the water tank 3 are respectively located in two separated cavities, the possibility that water in the water tank 3 located in the execution cavity 1b escapes into the power cavity 1a is low, the battery module 2 cannot be damaged due to the escape of water in the water tank 3, and the possibility that the battery module 2 is damaged is reduced.

In one embodiment, referring to fig. 1, the cleaning floor brush 200 is mounted on the housing 1. The cleaning brush 200 cleans the floor surface by being powered by the battery module 2.

In one embodiment, referring to fig. 1-3, the actuating chamber 1b is located in front of the power chamber 1 a.

In one embodiment, the battery module 2 includes a battery body and a control board connected to the battery body.

In one embodiment, the power assembly 100 further includes a motor, and the battery module 2 supplies power to the motor to drive the motor to form a suction negative pressure, so that the cleaning brush 200 can suck the ground garbage, such as dust, etc.

In one embodiment, the motor may be a wet and dry motor 4.

Note that the wet and dry motor 4 is a conventional technique in the art. When water on the floor is sucked by the cleaning brush 200, the water sucked by the cleaning brush 200 enters the wet and dry motor 4 and is discharged by the wet and dry motor 4.

It should be noted that the water entering the wet/dry motor 4 is usually thrown out of the wet/dry motor 4 by the wet/dry motor 4.

In one embodiment, referring to fig. 1, 6 and 7, the wet and dry motor 4 generally has a water outlet 41.

In one embodiment, the water entering the wet/dry motor 4 is discharged from the drain 41 out of the wet/dry motor 4.

In an embodiment, referring to fig. 1, 6 and 7, the power assembly 100 is formed with a flow guiding channel 5 communicated with the water outlet 41, and the flow guiding channel 5 is used for guiding water discharged from the water outlet 41 to the outside of the housing 1. According to the structure, sewage sucked by the cleaning floor brush 200 enters the dry-wet dual-purpose motor 4 and then is discharged to the flow guide channel 5 from the water outlet 41 of the dry-wet dual-purpose motor 4, and is discharged to the shell 1 through the flow guide channel 5, the sewage cannot be stored in the dust collector, and therefore the dust collector does not need to be provided with a sewage bucket used for containing sucked water, the structure of the dust collector is compact, the size of the dust collector is small, and the whole dust collector is small and light. It can be understood that when water accumulated on the floor is sucked by the cleaning floor brush 200, the sucked water is still discharged out of the housing 1 through the guide passage 5, and therefore, the sucked water does not generally reach the battery modules 2 to damage the battery modules 2, thereby reducing the possibility of damage to the battery modules 2.

It is understood that the vacuum cleaner of the embodiment of the present application is suitable for mopping floor in a slightly wet state, and the floor is wiped and cleaned by the wiping surface of the cleaning brush 200 in a slightly wet state.

In one embodiment, referring to fig. 1, the wet and dry motor 4 is located below the battery module 2. With this structure, the water discharged from the wet and dry electric machine 4 generally flows downward, and it is possible to prevent the water discharged from the wet and dry electric machine 4 from entering the battery module 2 and damaging the battery module 2 as much as possible.

In one embodiment, the wet and dry electric machine 4 may be disposed above the battery module 2 according to actual needs.

In one embodiment, referring to fig. 1, 2 and 6, at least two housings 1 enclose a flow guide channel 5.

In one embodiment, referring to fig. 1, 2 and 6, the flow guide channel 5 is located at the rear of the housing 1.

In one embodiment, referring to FIG. 7, during operation of the vacuum cleaner, the powertrain 100 is actually tilted at a certain angle. The water entering the flow guide channel 5 is discharged from the housing 1 under the influence of gravity.

In one embodiment, referring to fig. 6, one end of the diversion channel 5 receives water discharged from the water outlet 41 of the wet/dry motor 4, and the water entering the diversion channel 5 is discharged out of the housing 1 from the other end of the diversion channel 5.

In one embodiment, the flow guide passage 5 may be formed only in one of the two housings 1.

In an embodiment, the water discharged from the water outlet 41 of the wet and dry motor 4 may be guided to the housing 1 through an additional water guiding pipe and discharged to the outside of the housing 1.

In one embodiment, the power assembly 100 may not include a motor, and the motor of the vacuum cleaner is disposed on the cleaning brush 200.

In one embodiment, referring to fig. 7, the power assembly 100 further includes a water pump 6, and the water pump 6 is used for pumping the water in the water tank 3 out of the water tank 3 to clean the floor.

In one embodiment, referring to fig. 1 and 7, the water pump 6 is located in the execution chamber 1 b.

In one embodiment, referring to fig. 1, the water pump 6 is located below the battery module 2. In this way, the possibility that the water flows to the battery module 2 to damage the battery module 2 during the water pumping process of the water pump 6 can be prevented as much as possible.

In one embodiment, the water pump 6 pumps water from the water tank 3 to the ground.

In one embodiment, referring to fig. 1, the power assembly 100 further includes a nozzle 7, and the water in the water tank 3 is delivered to the nozzle 7 by the water pump 6 and sprayed out from the nozzle 7 to clean the floor.

In one embodiment, the showerhead 7 is at least partially located within the process chamber 1 b.

In one embodiment, the spray head 7 may spray water toward the ground.

In one embodiment, the nozzle 7 may spray water to the cloth of the cleaning brush 200.

It can be understood that the spray head 7 is not suitable for spraying too much water to the ground, and the spray head 7 sprays a small amount of water to the ground to wet the ground, so that the cleaning cloth on the cleaning brush 200 can be conveniently used for wiping the ground.

In one embodiment, the showerhead 7 is located below the battery module 2. Thus, the damage to the battery module 2 caused by the water flowing through the battery module 2 can be prevented as much as possible in the process of spraying water from the spray head 7.

It is understood that the water pump 6 and/or the spray head 7 may be disposed above the battery module 2 according to actual needs.

In one embodiment, the water pump 6 and/or the spray head 7 may not be provided. The water in the water tank 3 can flow out of the water tank 3 by gravity through the on-off valve.

In one embodiment, at least two housings 1 are removably connected. Thus, the battery module 2 in the power cavity 1a and the water tank 3 in the execution cavity 1b are conveniently disassembled.

In one embodiment, at least two housings 1 may be non-detachably connected by riveting or the like.

In one embodiment, referring to fig. 2 to 5, the housing 1 includes a common portion, a power shell and an actuating shell 15. The power shell is connected with the common part. The actuator housing 15 is attached to the side of the common portion facing away from the power housing. Wherein a common part of at least two shells 1 and a power shell of at least two shells 1 are enclosed to form a power cavity 1a, and a common part of at least two shells 1 and an execution part of at least two shells 1 are enclosed to form an execution cavity 1 b. In this way, the common portion is used as a common portion to enclose the power chamber 1a and the actuating chamber 1b corresponding to the power housing and the actuating housing 15, respectively, and the housing 1 is divided by the common portion, thereby simplifying the structure of the housing 1.

In an embodiment, referring to fig. 2 to 5, of the common portions of at least two housings 1, the common portion of one housing 1 is formed with a first notch 16, the common portion of the other housing 1 is formed with a first protrusion 17 matching with the first notch 16, and the first protrusion 17 is clamped in the first notch 16 so that the common portion of one housing 1 is detachably connected with the common portion of the other housing 1. Of the power shells of the at least two shells 1, the power shell of one of the shells 1 is formed with a second notch 18, the power shell of the other shell 1 is formed with a second protrusion 19 matched with the second notch 18, and the second protrusion 19 is clamped in the second notch 18 so that the power shell of one of the shells 1 is detachably connected with the power shell of the other shell 1. In such a structure, the common part of one of the housings 1 is detachably connected with the common part of the other housing 1 in a manner of combining the corresponding notch and the protrusion, and the power shell of one of the housings 1 is detachably connected with the power shell of the other housing 1, so that the battery assembly of the housing 1 can be conveniently replaced. First bulge 17 joint is in first notch 16, and when water flows from the opposite side of first bulge 17 of a side direction of first bulge 17, water need be through the runner of the multichannel bending between first bulge 17 and first notch 16, and the flow resistance of water is great, and first bulge 17 joint has objectively made between first bulge 17 and the first notch 16 to form labyrinth seal in first notch 16. The second protruding part 19 joint is in second notch 18, and when water flows from a side of second protruding part 19 to the other side of second protruding part 19, water needs the runner of multichannel bending between second protruding part 19 and second notch 18, and the flow resistance of water is great, and second protruding part 19 joint has objectively made between second protruding part 19 and the second notch 18 to form labyrinth seal. Therefore, a good dry-wet separation effect can be obtained by the cooperation of the first notch 16 and the first protrusion 17 and the cooperation of the second notch 18 and the second protrusion 19.

For example, referring to fig. 2 to 5, the common portion of the lower case 1 is shown to be formed with a first notch 16, and the common portion of the upper case 1 is shown to be formed with a first protrusion 17 adapted to the first notch 16.

In one embodiment, the common portion of the lower case 1 may be formed with a first protrusion 17, and the common portion of the upper case 1 may be formed with a first notch 16 fitted with the first protrusion 17.

For example, referring to fig. 2 to 5, the power shell of the lower housing 1 is shown to be formed with a second notch 18, and the power shell of the upper housing 1 is shown to be formed with a second protrusion 19 adapted to the second notch 18.

In one embodiment, the power shell of the lower housing 1 may be formed with a second protrusion 19, and the power shell of the upper housing 1 may be formed with a second notch 18 adapted to the second protrusion 19.

In an embodiment, referring to fig. 2 to 5, the common portion of one of the shells 1 is a first common portion 11, the first common portion 11 includes a common portion main body 111 and two first groove walls 112 arranged oppositely, the common portion main body 111 is connected to the two first groove walls 112 arranged oppositely, the common portion main body 111 and the two first groove walls 112 arranged oppositely enclose a first notch 16, the common portion of the other shell 1 is a second common portion 12, the first protrusion 17 is formed on the second common portion 12, the first common portion 11 is further formed with a first sealing portion 121, and both sides of the first protrusion 17 are provided with first sealing portions 121. Wherein a labyrinth seal is formed between the common part main body 111, the first protrusion 17, the two first groove walls 112 arranged oppositely, and the two side first sealing parts 121. In such a structure, through the cooperation of the first groove wall 112 and the first sealing portion 121, the bending times of the flow channel through which water flows from one side of the first protruding portion 17 to the other side of the protruding portion are more, the flow resistance is larger, a better sealing effect is achieved, and the purpose of dry-wet separation can be better achieved.

In one embodiment, only one first groove wall 112 may be provided, and the first protrusion 17 forms a labyrinth seal with the common part main body 111 and the one first groove wall 112. The first projection 17 and one of the first groove walls 112 are connected in a manner corresponding to a single-spigot connection.

In an embodiment, referring to fig. 2 to 5, the power shell of one of the shells 1 is a first power shell 13, the first power shell 13 includes a power shell main body 131 and two oppositely disposed second slot walls 132, the power shell main body 131 is respectively connected to the two oppositely disposed second slot walls 132, the power shell main body 131 and the two oppositely disposed second slot walls 132 are enclosed to form a second slot 18, the power shell of the other shell 1 is a second power shell 14, the second protrusion 19 is formed on the second power shell 14, the second power shell 14 is further formed with a second sealing portion 141, and both sides of the second protrusion 19 are provided with second sealing portions 141. Wherein, a labyrinth seal is formed between the power shell main body 131, the second protrusion 19, the two second groove walls 132 arranged oppositely and the two second sealing parts 141 on two sides. With such a structure, through the cooperation of the second groove wall 132 and the second sealing portion 141, the bending times of the flow channel, through which water flows from one side of the second protruding portion 19 to the other side of the second protruding portion 19, are more, the flow resistance is larger, the sealing effect is better, and the purpose of dry-wet separation can be better achieved.

In one embodiment, only one second groove wall 132 may be provided, the second protrusion 19 forms a labyrinth seal with the power housing main body 131 and one second groove wall 132, and the connection manner of the second protrusion 19 and one second groove wall 132 is equivalent to a single-spigot connection.

In one embodiment, referring to fig. 3, an opening 151 is defined between the actuating shells 15 of at least two of the housings 1, the opening 151 is located on a side of the actuating shells 15 facing away from the common portion, and the opening 151 is used for observing the water tank 3. Structural style like this, observe the water level in the water tank 3 through opening 151, can audio-visually know how much water still has in the water tank 3 to can judge comparatively accurately whether need to supply water to water tank 3.

In one embodiment, referring to FIG. 3, the opening 151 is located in front of the execution chamber 1 b.

In one embodiment, the water tank 3 may be entirely located within the actuating chamber 1b, with the water tank 3 viewed through the opening 151 between the actuating housings 15.

In one embodiment, referring to fig. 2 and 3, the water tank 3 is disposed through the opening 151, that is, the water tank 3 is partially exposed out of the execution cavity 1b through the opening 151. Thus, the water tank 3 is exposed through the opening 151, thereby facilitating observation of the water level in the water tank 3.

In one embodiment, the opening 151 may not be provided between the actuating shells 15 of the two housings 1, the ends of the actuating shells 15 of the two housings 1 facing away from the common portion are connected to each other, and the water tank 3 is entirely disposed in the actuating chamber 1 b.

In one embodiment, referring to fig. 3, the common portion, the power shell and the actuating shell 15 of each housing 1 are integrally formed. Structural style like this, every casing 1 is an integrated into one piece's whole, can realize water tank 3 and battery module 2's wet-dry separation through casing 1 promptly, need not set up extra spare part that is used for separating water tank 3 and battery module 2, has reduced the quantity of spare part.

In one embodiment, the common portion main body 111 is integrally formed with two first groove walls 112 arranged oppositely.

In one embodiment, the power shell body 131 is integrally formed with two second groove walls 132 that are oppositely disposed.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (13)

1. A power assembly, for a vacuum cleaner, the power assembly (100) comprising:

the number of the shells (1) is at least two, and at least two shells (1) enclose a power cavity (1a) and an execution cavity (1b) which are separated from each other;

a battery module (2) located within the power cavity (1 a); and

a water tank (3) located at least partially within the actuation chamber (1 b).

2. A power pack according to claim 1, characterized in that at least two of the housings (1) are detachably connected.

3. A power assembly according to claim 1, characterized in that the housing (1) comprises:

a common portion;

a power case connected with the common part; and

an actuating shell (15) connected to a side of the common portion facing away from the power shell;

wherein, the common part of at least two shells (1) and the power shell of at least two shells (1) are enclosed to form the power cavity (1a), and the common part of at least two shells (1) and the actuating shell (15) of at least two shells (1) are enclosed to form the actuating cavity (1 b).

4. A power assembly according to claim 3, characterized in that at least two of the housings (1) are common, one of the housings (1) being formed with a first notch (16) and the other housing (1) being formed with a first projection (17) adapted to the first notch (16), the first projection (17) being snapped into the first notch (16) to detachably connect the common of one of the housings (1) with the common of the other housing (1);

the power shell of at least two casings (1), wherein the power shell of one casing (1) is formed with second notch (18), the power shell of the other casing (1) is formed with second bulge (19) with second notch (18) looks adaptation, second bulge (19) joint in second notch (18) so that the power shell of one casing (1) and the power shell of the other casing (1) detachably connect.

5. The powertrain according to claim 4, characterized in that the common portion of one of the shells (1) is a first common portion (11), the first common portion (11) comprises a common portion main body (111) and two first groove walls (112) arranged oppositely, the common portion main body (111) is respectively connected with the two first groove walls (112) arranged oppositely, the common portion main body (111) and the two first groove walls (112) arranged oppositely enclose the first notch (16), the common portion of the other shell (1) is a second common portion (12), the first protrusion (17) is formed on the second common portion (12), the second common portion (12) is further formed with a first sealing portion (121), and the first sealing portions (121) are arranged on two sides of the first protrusion (17); wherein a labyrinth seal is formed between the common part main body (111), the first protrusion part (17), the two first groove walls (112) arranged oppositely and the first sealing parts (121) on two sides.

6. The powertrain according to claim 4, characterized in that the power shell of one of the shells (1) is a first power shell (13), the first power shell (13) comprises a power shell main body (131) and two second groove walls (132) arranged oppositely, the power shell main body (131) is respectively connected with the two second groove walls (132) arranged oppositely, the power shell main body (131) and the two second groove walls (132) arranged oppositely enclose a second notch (18), the power shell of the other shell (1) is a second power shell (14), the second protrusion (19) is formed on the second power shell (14), the second power shell (14) is further formed with a second sealing part (141), and the second sealing part (141) is arranged on both sides of the second protrusion (19); wherein a labyrinth seal is formed among the power shell main body (131), the second bulge part (19), the two second groove walls (132) which are oppositely arranged and the second sealing parts (141) on two sides.

7. A drive train according to claim 3, wherein an opening (151) is enclosed between the actuating shells (15) of at least two of the housings (1), said opening (151) being located on the side of the actuating shells (15) facing away from the common portion, said opening (151) being used for viewing the water tank (3).

8. A powertrain according to claim 3, characterised in that the common part of each housing (1), the power shell and the actuating shell (15) are integrally formed.

9. The power assembly according to any one of claims 1 to 8, characterized in that the power assembly (100) further comprises a wet and dry motor (4) positioned in the execution cavity (1b), the wet and dry motor (4) is provided with a water outlet (41), the power assembly (100) is formed with a diversion channel (5) communicated with the water outlet (41), and the diversion channel (5) is used for guiding water discharged from the water outlet (41) to the outside of the shell (1).

10. A drive train according to claim 9, wherein at least two of the housings (1) enclose the flow-guiding channel (5).

11. A powertrain according to claim 9, characterized in that the wet and dry electric machine (4) is located below the battery module (2).

12. The power assembly according to any one of claims 1 to 8, characterized in that the power assembly (100) further comprises a water pump (6) and a spray head (7), water in the water tank (3) is conveyed to the spray head (7) through the water pump (6) and is sprayed out through the spray head (7) to clean the ground, and the water pump (6) and the spray head (7) are both located below the battery module (2).

13. A vacuum cleaner, comprising:

the locomotion assembly (100) of any one of claims 1 to 12;

the cleaning floor brush (200) is arranged on the power assembly (100), and the cleaning floor brush (200) is used for cleaning the ground.

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