CN218852551U

CN218852551U - Cleaning unit assembly and surface cleaning device

Info

Publication number: CN218852551U
Application number: CN202221671486.8U
Authority: CN
Inventors: 刘迎意
Original assignee: Beijing Hete Wisdom Technology Co ltd
Current assignee: Beijing Hete Wisdom Technology Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-04-14
Anticipated expiration: 2032-07-01

Abstract

The embodiment of the application provides a clean unit subassembly and surface cleaning device, clean unit subassembly includes: the cleaning unit bracket is used for being connected to the bottom of a shell of the surface cleaning device, and a negative pressure cavity is defined between the cleaning unit bracket and the shell; the cleaning unit is connected to the bottom of the cleaning unit bracket; the air pressure detection unit comprises an air pressure detection hole formed in the cleaning unit and an air pressure balance hole formed in the cleaning unit support, the air pressure balance hole is communicated with the negative pressure cavity, the cleaning unit covers the air pressure balance hole, and the air pressure detection hole is communicated with the air pressure balance hole through an air pressure detection channel. In the embodiment of the application, the air pressure detection hole is communicated with the air pressure balance hole through the air pressure detection channel, the air pressure balance hole is communicated with the negative pressure cavity, and the cleaning unit covers the air pressure balance hole. Since the air pressure balance hole is covered by the cleaning unit, foreign matters cannot directly enter the negative pressure cavity from the air pressure balance hole.

Description

Cleaning unit assembly and surface cleaning device

Technical Field

The present application relates to the field of cleaning technology, and more particularly, to a cleaning unit assembly and a surface cleaning apparatus.

Background

The surface cleaning device is a household appliance which can provide a cleaning function, such as a self-moving surface cleaning device of a window cleaning robot, a floor sweeping robot and the like; alternatively, a non-self-moving surface cleaning device that requires the user to drag or hold in hand.

For non-horizontal surface cleaning, a negative pressure mechanism is also typically provided on the surface cleaning apparatus. Specifically, the bottom of the surface cleaning device is provided with a concave cavity which is used for defining a sealed space with the surface to be cleaned, and negative pressure is generated in the sealed space to adsorb the surface cleaning device on the surface to be cleaned. When the surface cleaning apparatus travels to the foot-empty area, air leakage from the enclosed space may result and the pressure may be lost, which may in turn result in the surface cleaning apparatus falling off the surface to be cleaned.

In order to detect the step-on area, one implementation manner in the prior art is to provide an air pressure detection hole at the bottom of the surface cleaning device, and the air pressure detection hole is communicated with the negative pressure cavity. When the air pressure detection hole is in the step-on empty area, the surface cleaning device can detect a pressure loss signal, and then the surface cleaning device is controlled to turn around or turn to avoid the step-on empty area. However, since the air pressure detecting hole is directly communicated with the negative pressure chamber, foreign matters (debris, hair, etc. on the surface to be cleaned) on the surface to be cleaned easily enter the negative pressure chamber through the air pressure detecting hole, so that the negative pressure chamber is blocked, and the surface cleaning device is damaged.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a clean unit subassembly and surface cleaning device to do benefit to and solve prior art air pressure inspection hole and negative pressure chamber direct intercommunication, treat that the foreign matter on clean surface gets into the negative pressure chamber by air pressure inspection hole very easily, causes the negative pressure chamber to block, and then leads to the problem of surface cleaning device damage.

In a first aspect, an embodiment of the present application provides a cleaning unit assembly, on which a bottom portion and a top portion are defined, the bottom portion being close to a surface to be cleaned, and the top portion being far from the surface to be cleaned, the cleaning unit assembly including:

the cleaning unit bracket is used for being connected to the bottom of a shell of the surface cleaning device, and a negative pressure cavity is defined between the cleaning unit bracket and the shell;

the cleaning unit is connected to the bottom of the cleaning unit bracket;

the air pressure detection unit comprises an air pressure detection hole formed in the cleaning unit and an air pressure balance hole formed in the cleaning unit support, the air pressure balance hole is communicated with the negative pressure cavity, the cleaning unit covers the air pressure balance hole, the air pressure detection hole is communicated with the air pressure balance hole through an air pressure detection channel, the air pressure detection hole is located outside the negative pressure cavity, and the air pressure balance hole is located inside the negative pressure cavity in the direction perpendicular to the cleaning unit support.

In a second aspect, embodiments of the present application provide a surface cleaning apparatus comprising:

a housing;

the cleaning unit assembly of any one of the first aspect;

wherein the housing and the cleaning unit holder are sealingly connected.

In the embodiment of the present application, the air pressure detection hole is communicated with the air pressure balance hole through the air pressure detection passage, the air pressure balance hole is communicated with the negative pressure chamber, and the cleaning unit covers the air pressure balance hole. Since the air pressure balance hole is covered by the cleaning unit, foreign matters cannot directly enter the negative pressure cavity from the air pressure balance hole. In addition, if foreign matters exist at the air pressure detection hole, the air pressure detection hole is not directly communicated with the negative pressure cavity, so that the foreign matters at the air pressure detection hole can be blocked by the air pressure detection channel and are not easy to enter the negative pressure cavity. If foreign matters enter the air pressure detection channel from the air pressure detection hole, the air pressure detection channel is blocked, the air pressure detection unit can only be caused to malfunction, and the whole machine cannot be caused to malfunction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a surface cleaning apparatus according to an embodiment of the present disclosure; FIG. 2 is a schematic perspective view of another surface cleaning apparatus provided in an embodiment of the present application; FIG. 3 is an exploded view of a surface cleaning apparatus according to an embodiment of the present application; fig. 4 is a bottom view of a cleaning liquid containing tank according to an embodiment of the present disclosure; fig. 5 is a schematic structural view of an air duct provided in the embodiment of the present application; fig. 6 is a sectional view of a cleaning liquid containing tank according to an embodiment of the present invention; FIG. 7 is a partial cross-sectional view of a surface cleaning apparatus provided in accordance with an embodiment of the present application; FIG. 8 is a partial cross-sectional view of another surface cleaning apparatus provided in accordance with an embodiment of the present application; FIG. 9 is a partial cross-sectional view of another surface cleaning apparatus provided in accordance with an embodiment of the present application; FIG. 10 is a schematic perspective view of another surface cleaning apparatus provided in accordance with an embodiment of the present disclosure; fig. 11 is a schematic perspective view of a bracket of a cleaning unit according to an embodiment of the present application; figure 12 is a bottom view of a surface cleaning apparatus according to an embodiment of the present application;

fig. 13 is a schematic perspective view of a cleaning unit according to an embodiment of the present application; FIG. 14 is a bottom view of another surface cleaning apparatus provided in accordance with an embodiment of the present application; FIG. 15 is a schematic view of a prior art surface cleaning apparatus; fig. 16 is a schematic perspective view of a walking unit assembly according to an embodiment of the present application; FIG. 17 is an exploded view of a track cleaning assembly according to an exemplary embodiment of the present disclosure; FIG. 18 is a schematic structural view of another walking unit assembly provided in the embodiments of the present application;

FIG. 19 is a schematic diagram of the transmission principle of the walking unit assembly shown in FIG. 16; FIG. 20 is a schematic perspective view of a track cleaning element according to an exemplary embodiment of the present disclosure; fig. 21 is a schematic perspective view of a walking and driving unit assembly according to an embodiment of the present application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be understood that the term "and/or" as used herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., A and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

The surface cleaning device related to the embodiment of the application can be a self-moving surface cleaning device such as a window cleaning robot, a sweeping robot, a mopping robot or a sweeping and mopping integrated robot; alternatively, a non-self-moving surface cleaning device that requires the user to drag or hold in hand. The surface to be cleaned related to the embodiment of the application can be a non-horizontal surface, such as a framed window, a frameless window or a wall surface; or a horizontal surface such as the ground or a table top, etc. When the surface to be cleaned is not horizontal, the surface cleaning device is also provided with a negative pressure mechanism, and the surface cleaning device can be adsorbed on the surface to be cleaned through the negative pressure mechanism. When the surface to be cleaned is horizontal, the surface cleaning device may or may not be provided with a negative pressure mechanism. When the surface cleaning device is provided with the negative pressure mechanism, the pressure between the surface cleaning device and the surface to be cleaned can be increased through the negative pressure mechanism, so that the friction force between the surface cleaning device and the surface to be cleaned is increased, and the cleaning effect is improved.

For convenience of explanation, a front-back direction, a left-right direction, and an up-down direction, which are perpendicular to each other, are defined on the surface cleaning apparatus. Wherein "above" refers to a direction away from the surface to be cleaned, and "below" refers to a direction closer to the surface to be cleaned. In some possible implementations, "above" may also be referred to as "top", "below" may also be referred to as "bottom", "front-back direction" and "left-right direction" may also be collectively referred to as "side", "left-right direction" may also be referred to as "first direction", and "front-back direction" may also be referred to as "second direction", which is not specifically limited by the embodiments of the present application.

Referring to fig. 1, a schematic perspective view of a surface cleaning apparatus 100 according to an embodiment of the present disclosure is shown; referring to fig. 2, a schematic perspective view of another surface cleaning apparatus 100 according to an embodiment of the present disclosure is shown. As shown in fig. 1 and fig. 2, the surface cleaning apparatus 100 includes a housing 110, a cleaning liquid containing tank 120 disposed at a top of the housing 110, and a cleaning unit bracket 150, a cleaning unit 160, and a traveling unit (e.g., a crawler wheel assembly 181 illustrated in fig. 2) disposed at a bottom of the housing 110. Wherein the cleaning unit bracket 150 is coupled to the bottom of the housing 110, the cleaning unit 160 is coupled to the bottom of the cleaning unit bracket 150, and the track wheel assembly 181 is coupled to the bottom of the housing 110 and passes through the cleaning unit bracket 150 and the cleaning unit 160 so as to be in contact with the surface to be cleaned. When the track wheel assembly 181 rotates, the surface cleaning apparatus 100 can be driven to travel on the surface to be cleaned, and the surface to be cleaned is wiped by the cleaning unit 160, so as to clean the surface to be cleaned.

In addition, in order to improve the cleaning effect, the surface cleaning device 100 may further spray the cleaning liquid in the cleaning liquid containing tank 120 onto the surface to be cleaned through the cleaning liquid output module (e.g., a nozzle, an ultrasonic spray sheet, or a water dropping hole) during the process of walking the surface to be cleaned, so as to wet the surface to be cleaned and/or the cleaning unit 160, thereby improving the cleaning effect of the cleaning unit 160 on the surface to be cleaned.

During use of the surface cleaning apparatus 100, a user typically needs to view the cleaning solution balance in the cleaning solution containing tank 120. For example, when the user finds that the cleaning liquid containing tank 120 has a small amount of cleaning liquid remaining, it is necessary to add the cleaning liquid in time to prevent the cleaning effect from being affected by the exhaustion of the cleaning liquid. However, in the prior art, the cleaning liquid containing tank 120 is usually disposed inside the surface cleaning apparatus 100, which is inconvenient for the user to check the residual amount of the cleaning liquid.

To address this problem, the embodiment of the present application provides the cleaning liquid containing tank 120 outside the surface cleaning apparatus 100, specifically, on the top of the housing 110. With this arrangement, the cleaning solution containing tank 120 always faces the user during the operation of the surface cleaning apparatus 100, so that the user can easily check the residual amount of the cleaning solution in the cleaning solution containing tank 120. It is understood that the cleaning liquid containing tank 120 should be made of a transparent or translucent material.

In addition, since the cleaning liquid containing tank 120 is disposed outside the housing 110, the cleaning liquid containing tank 120 is not restricted by the inner space of the housing 110, and thus, the capacity of the cleaning liquid containing tank 120 can be increased. In a specific implementation, in order to reduce the height of the surface cleaning apparatus 100 as much as possible while increasing the capacity of the cleaning solution containing tank 120, the cleaning solution containing tank 120 may be formed in a flat shape, that is, the sectional area of the cleaning solution containing tank 120 in the direction perpendicular to the up-down direction may be increased as much as possible. Therefore, in one possible implementation, the projection of the housing 110 and the cleaning liquid containing tank 120 in the up-down direction are matched, and the coverage of the cleaning liquid containing tank 120 on the housing 110 is greater than or equal to 50%. In a specific implementation, the cleaning liquid containing tank 120 may be configured to: the coverage rate of the cleaning liquid containing tank 120 on the housing 110 is greater than or equal to 75%, 85%, 90%, etc., which is not limited by the embodiment of the present application.

In some possible implementations, the volume of the cleaning liquid containing tank 120 may be set to be greater than or equal to 80ml. Specifically, the specific molecular weight may be 150ml,200ml,300ml and the like, which is not limited by the examples of the present application.

In some possible implementations, a negative pressure mechanism (which may include the vacuum unit 206 and the air duct 130 and the like cooperating with the vacuum unit 206, wherein the vacuum unit 206 may be a fan or a pump module and the like) is further provided in the surface cleaning apparatus 100 to attach the surface cleaning apparatus 100 to the surface to be cleaned.

Specifically, the surface cleaning apparatus 100 is further provided with a cleaning unit bracket 150 and a cleaning unit 160 (in some possible implementations, the cleaning unit bracket 150 and the cleaning unit 160 may be collectively referred to as a cleaning unit assembly) at the bottom of the housing 110, wherein the cleaning unit bracket 150 is connected to the bottom of the housing 110, and the cleaning unit 160 is connected to the bottom of the cleaning unit bracket 150. The bottom of the cleaning unit bracket 150 is provided with a cavity for defining a sealed space with the surface to be cleaned. The cleaning unit 160 is disposed between the cleaning unit bracket 150 and the surface to be cleaned, and may seal the sealed space. The top of the cleaning unit bracket 150 is hermetically connected with the bottom of the housing 110, and a negative pressure chamber 155 (shown in fig. 10) is defined between the cleaning unit bracket 150 and the housing 110, and the negative pressure chamber 155 is communicated with the sealed space at the bottom of the cleaning unit bracket 150. A vacuum unit 206 (shown in fig. 10) may be disposed in the sub-pressure chamber 155, and when the vacuum unit 206 is operated, a sub-pressure may be generated in the sub-pressure chamber 155, and thus in the sealed space, to attach the surface cleaning apparatus 100 to the surface to be cleaned. In addition, the surface cleaning device 100 is further provided with an air duct 130, the air duct inlet 131 is connected with the negative pressure cavity 155, and the air duct outlet 132 is communicated with the outside of the surface cleaning device 100, so that the air flow in the negative pressure cavity 155 can be discharged to the outside of the surface cleaning device 100 through the air duct 130.

It can be appreciated that when the vacuum unit 206 is operated, a large amount of noise is generated due to a large amount of gas flow within the air duct 130. Based on this, the air duct 130 is disposed between the casing 110 and the cleaning liquid containing tank 120 according to the embodiment of the present application, and the cleaning liquid in the cleaning liquid containing tank 120 has a noise absorbing effect, so that the noise generated by the air duct 130 can be reduced. The arrangement of the air duct 130 will be described in detail with reference to the drawings.

Referring to fig. 3, there is provided an exploded view of a surface cleaning apparatus 100 according to an embodiment of the present application; referring to fig. 4, a bottom view of a cleaning liquid containing tank 120 is provided according to an embodiment of the present invention. As shown in fig. 3 and fig. 4, in the embodiment of the present invention, a first air channel groove 111 is formed on the top of the housing 110, a second air channel groove 1211 is formed on the bottom of the cleaning liquid containing box 120, and the shapes of the first air channel groove 111 and the second air channel groove 1211 match, when the cleaning liquid containing box 120 is assembled on the housing 110, the second air channel groove 1211 is fastened on the first air channel groove 111, and a complete cavity is formed between the first air channel groove 111 and the second air channel groove 1211, that is, the air channel 130 is formed. That is, in the present embodiment, a portion of the wind tunnel 130 is integrated at the bottom of the cleaning liquid containing tank 120, and a portion is integrated at the top of the housing 110. By adopting the arrangement mode, on one hand, the attaching degree of the air duct 130 and the cleaning liquid containing box 120 is better, so that a better silencing effect is achieved; on the other hand, the number of parts of the surface cleaning apparatus 100 can be reduced, the assembly is easy, the structure of the surface cleaning apparatus 100 is more compact, and the height of the surface cleaning apparatus 100 is reduced.

Of course, a person skilled in the art can also provide a separate air duct between the housing 110 and the cleaning liquid containing tank 120 according to actual needs, and the embodiment of the present invention is not limited thereto.

Referring to fig. 3 and 5, in the embodiment of the present invention, an air duct inlet 131 is further disposed at the top of the housing 110, and an air duct outlet 132 is disposed at the side of the housing 110. In a specific implementation, the air duct inlet 131 is disposed inside the first air duct groove 111. It is understood that the duct 130 is configured to connect the duct inlet 131 and the duct outlet 132. The air flow generated by the vacuum unit 206 flows into the air duct 130 through the air duct inlet 131, and then flows out of the air duct 130 through the air duct outlet 132. The air duct air outlet 132 is arranged on the side portion of the shell 110, so that the length of the air duct 130 can be prolonged as far as possible, and air outlet noise is reduced.

In one possible implementation, the cross-sectional area of the air chute 130 decreases gradually within the air chute 130 in the direction of flow of the air stream. It can be understood that the flow direction of the air flow is from the air inlet 131 to the air outlet 132. The cross-sectional area of the air duct 130 is gradually reduced along the flow direction of the air flow, which is beneficial to reducing the noise at the air duct outlet 132.

In one implementation, the air duct 130 between the housing 110 and the cleaning liquid containing tank 120 may have multiple branches to disperse the air flow in different directions. It should be noted that, when the air duct 130 has a plurality of branches, each sub-air duct may be disposed in a manner of "the sectional area of the air duct gradually decreases along the flow direction of the air flow", and of course, only a part of the sub-air ducts may be disposed in a manner of "the sectional area of the air duct gradually decreases along the flow direction of the air flow", which is not specifically limited in this embodiment of the present application.

Referring to fig. 5, a schematic structural diagram of an air duct 130 according to an embodiment of the present disclosure is provided. As shown in fig. 5, the air duct 130 provided in the embodiment of the present application includes a left portion and a right portion, and for convenience of description, the air duct branch located on the left side of the surface cleaning device 100 is referred to as a "first sub-air duct 1301"; the duct branch on the right side of the surface cleaning apparatus 100 is referred to as the "second sub-duct 1302". That is, the first sub-duct 1301 and the second sub-duct 1302 are arranged in the left-right direction. Accordingly, a first sub-duct air inlet 1311 and a first sub-duct air outlet 1321 corresponding to the first sub-duct 1301 are included on the left side of the surface cleaning apparatus 100; a second sub-duct inlet 1312 and a second sub-duct outlet 1322 corresponding to the second sub-duct 1302 are included on the right side of the surface cleaning apparatus 100. The first sub-air duct 1301 is communicated with a first sub-air duct inlet 1311 and a first sub-air duct outlet 1321, and the second sub-air duct 1302 is communicated with a second sub-air duct inlet 1312 and a second sub-air duct outlet 1322.

In addition, in order to uniformly disperse the air flow in the air duct 130 on the left and right sides, in some possible implementations, the first sub air duct 1301 and the second sub air duct 1302 are symmetrically disposed relative to a second central axis L2 (shown in fig. 4) of the casing 110, where the second central axis L2 is a central axis of the casing 110 parallel to the front-back direction.

In some possible implementations, there may also be a plurality of first sub-ducts 1301 on the left side of the surface cleaning apparatus 100 and a plurality of second sub-ducts 1302 on the right side of the surface cleaning apparatus 100. Illustratively, in the embodiment of the present application, two first sub-air ducts 1301 are present on the left side of the surface cleaning apparatus 100, and the two first sub-air ducts 1301 are distributed in the up-down direction. Correspondingly, two first sub-air duct air outlets 1321 which correspond to the two first sub-air ducts 1301 and are arranged in the up-down direction are further arranged on the left side of the surface cleaning device 100. Each first sub-air duct 1301 is communicated with one first sub-air duct air outlet 1321, and the two first sub-air ducts 1301 are communicated with the same first sub-air duct air inlet 1311. Similarly, two second sub-air ducts 1302 are arranged on the right side of the surface cleaning device 100, and the two second sub-air ducts 1302 are distributed in the up-down direction. Correspondingly, two second sub-air duct outlets 1322 arranged in the up-down direction corresponding to the two second sub-air ducts 1302 are also disposed on the right side of the surface cleaning apparatus 100. Each of the second sub-air ducts 1302 is communicated with one second sub-air duct outlet 1322, and the two second sub-air ducts 1302 are communicated with the same second sub-air duct inlet 1312.

In addition, in order to uniformly disperse the airflow in the air duct 130 at the upper and lower sides, in some possible implementations, the two first sub-air ducts 1301 and the two first sub-air duct air outlets 1321 located at the left side of the surface cleaning device 100 are symmetrically arranged relative to a first central axis L1 (as shown in fig. 4) of the casing 110, where the first central axis L1 is a central axis of the casing 110 parallel to the left and right directions. Similarly, the two second sub-air ducts 1302 and the two second sub-air duct outlets 1322 on the right side of the surface cleaning apparatus 100 are symmetrically disposed relative to the first central axis L1 of the housing 110.

In some possible implementations, the at least two first sub-ducts 1301 positioned on the left side of the surface cleaning apparatus 100 and the at least two second sub-ducts 1302 positioned on the right side of the surface cleaning apparatus 100 extend radially from the center of the housing 110 to the sides of the housing 110. The length of the air duct 130 can be prolonged as far as possible through the structural design, and the air outlet noise is reduced.

Illustratively, when two first sub-air ducts 1301 are present on the left side of the surface cleaning apparatus 100 and two second sub-air ducts 1302 are present on the right side of the surface cleaning apparatus 100, the two first sub-air ducts 1301 and the two second sub-air ducts 1302 extend radially from the center of the housing 110 to the sides of the housing 110. Specifically, one first sub-air duct 1301 extends leftward and forward, one first sub-air duct 1301 extends leftward and rearward, one second sub-air duct 1302 extends rightward and forward, and one second sub-air duct 1302 extends rightward and rearward, so that the air duct 130 is in an "X" shape as a whole. That is, each sub-duct extends toward a corner region of the surface cleaning apparatus 100, and the length of the duct 130 can be extended as much as possible by the structural design, so that the wind noise can be reduced.

Of course, those skilled in the art may set other numbers of the first sub-air ducts 1301 and the second sub-air ducts 1302 and set the plurality of sub-air ducts in other shapes according to actual needs, and the embodiment of the present application is not particularly limited thereto. For example, 1, 3, 4, or 5 first sub-air ducts 1301 may be disposed on the left side of the surface cleaning apparatus 100, and 1, 3, 4, or 5 second sub-air ducts 1302 may be disposed on the right side of the surface cleaning apparatus 100.

Continuing with fig. 1 and 3, in some possible implementations, the side of the housing 110 is further provided with an impact sensor 201, and the impact sensor 201 is used to detect a raised obstacle (e.g., a border on a framed glass, etc.) on the surface cleaning apparatus 100.

In one possible implementation, in order to increase the detection range of the impact sensor 201, the impact sensor 201 disposed in the first direction may be bent and extended to the second direction. Specifically, both sides of the impact sensor 201 disposed at the front side of the housing 110 may be bent rearward and extended to the left and right sides of the housing 110, respectively. In other words, both sides of the impact sensor 201 disposed at the front side of the housing 110 are bent and extended rearward to cover partial areas of the left and right sides of the housing 110. Similarly, both sides of the impact sensor 201 disposed at the rear side of the housing 110 are bent and extended forward to cover partial areas of the left and right sides of the housing 110. It can be understood that with this arrangement, when there are obstacles on the left and right sides of the surface cleaning apparatus 100, there is also a greater probability that the collision sensor 201 can detect the obstacles, i.e., the detection range of the collision sensor 201 is increased without increasing the number of collision sensors 201.

In one possible implementation, the air duct outlet 132 is disposed in the first direction of the housing 110, and when the collision sensor 201 extends to the second direction, a partial area of the air duct outlet 132 is covered. Illustratively, the impact sensors 201 located at the front side and the rear side of the housing 110 extend to a partial region where the left side portion of the housing 110 covers the first air duct outlet 132, and extend to a partial region where the right side portion of the housing 110 covers the second air duct outlet 132. Cover part wind channel air outlet 132 through collision sensor 201 and can change the air-out angle of wind channel air outlet 132, extension wind channel 130 length further reduces the air-out noise.

Referring to fig. 6, a cross-sectional view of a cleaning liquid containing tank 120 according to an embodiment of the present invention is shown. As shown in fig. 6, the cleaning solution containing tank 120 includes a cleaning solution containing tank upper shell 121 and a cleaning solution containing tank lower shell 122, the cleaning solution containing tank upper shell 121 is fastened on the cleaning solution containing tank lower shell 122, and an inner space of the cleaning solution containing tank 120 is formed between the cleaning solution containing tank upper shell 121 and the cleaning solution containing tank lower shell 122. In the concrete realization, cleaning solution holding case epitheca 121 and cleaning solution holding case inferior valve 122 can be glued through modes such as UV and connect for the hookup location of cleaning solution holding case epitheca 121 and cleaning solution holding case inferior valve 122 is sealed completely, avoids the cleaning solution to leak.

In addition, a pour hole 1212 is provided in the top of the cleaning liquid storage tank 120, and a pour hole seal 12121 is provided in the pour hole 1212, and the pour hole seal 12121 seals the pour hole 1212. In a specific implementation, the liquid injection hole sealing element 12121 may be made of rubber, silica gel, or other materials, which is not specifically limited in this embodiment of the present application. Under the normal condition, annotate liquid hole sealing member 12121 and install in annotate liquid hole 1212 position (be in the encapsulated situation promptly), when the user needs to add the cleaning solution in cleaning solution holding box 120, at first will annotate liquid hole sealing member 12121 and take off in annotate liquid hole 1212, then add the cleaning solution to cleaning solution holding box 120 through annotating liquid hole 1212, after the cleaning solution is added and is accomplished, install annotate liquid hole sealing member 12121 again in annotate liquid hole 1212 position, prevent that the cleaning solution from leaking in annotating liquid hole 1212.

This application embodiment will annotate liquid hole 1212 sets up at the top of cleaning solution holding case 120, then when the cleaning solution in cleaning solution holding case 120 exhausts, the user need not to take off cleaning solution holding case 120 on surface cleaning device 100, can directly carry out the cleaning solution filling, the operation of being convenient for.

In this application, to be used for the balanced structure of atmospheric pressure and annotate liquid hole 1212 and set up respectively in the different positions of cleaning solution holding case 120, admission valve 1221 sets up in the bottom of cleaning solution holding case 120, in surface cleaning device 100 course of work, along with the consumption of cleaning solution in cleaning solution holding case 120, atmospheric pressure in cleaning solution holding case 120 can reduce gradually, can keep the atmospheric pressure balance in cleaning solution holding case 120 through admission valve 1221. Because the bottom of cleaning liquid holding tank 120 is difficult for touching by the user, consequently, set up admission valve 1221 in the bottom of cleaning liquid holding tank 120, can avoid because reasons such as user's maloperation or collision lead to the damage of admission valve 1221. The liquid injection hole 1212 and the air intake valve 1221 are respectively disposed at different sides of the cleaning liquid containing box 120, and the two may be designed to be larger, so as to increase the speed of air pressure balance and facilitate the user to supplement the cleaning liquid into the cleaning liquid containing box 120.

In one embodiment, the air inlet valve 1221 protrudes from the bottom of the cleaning solution containing tank 120. In order to accommodate the air inlet valve 1221, an air inlet valve installation groove 125 (shown in fig. 3) is further provided at the top of the housing 110. When the cleaning liquid containing tank 120 is coupled to the housing 110, the air inlet valve 1221 is inserted into the air inlet valve installation groove 125. By the arrangement mode, on one hand, the installation of the air inlet valve 1221 is firmer, and the service life of the air inlet valve 1221 is prolonged; on the other hand, the height of the surface cleaning apparatus 100 may be reduced.

In a practical application scenario, a user may need to move the surface cleaning apparatus 100 from time to time. For example, moving the surface cleaning apparatus 100 from the stowed position to a window begins operation; alternatively, after the surface cleaning apparatus 100 completes cleaning of one window, the surface cleaning apparatus 100 is moved to another window. Therefore, to facilitate movement of the surface cleaning apparatus 100 by a user, it is generally desirable to provide a forcing portion 140 (e.g., a handle) on the surface cleaning apparatus 100, such that the user can hold the forcing portion 140 to lift the surface cleaning apparatus 100 and thereby move the surface cleaning apparatus 100. In particular, the force application part 140 is usually disposed on the top of the surface cleaning apparatus 100, but when the force application part 140 is added on the top of the surface cleaning apparatus 100, the height of the surface cleaning apparatus 100 is increased, which is inconvenient for the user to use and store.

In view of the above problem, the embodiment of the present application provides a surface cleaning apparatus 100, wherein a force application portion groove 123 is formed on a top portion of a housing assembly (the housing 110 and the cleaning liquid containing tank 120 are collectively referred to as "housing assembly"), and the force application portion 140 is movably connected to the top portion of the housing assembly, so that the force application portion 140 and the housing assembly can relatively translate in a direction (vertical direction) perpendicular to the top portion of the housing assembly within a preset stroke range. At the position (lowermost position) where the urging section 140 is closest to the housing assembly, at least a partial region of the urging section 140 is fitted into the urging section groove 123. That is, force application portion 140 is floatingly coupled to the housing assembly such that when the user does not need to move surface cleaning apparatus 100, force application portion 140 can be inserted into force application portion recess 123, thereby reducing the height of surface cleaning apparatus 100; when the user needs to move the surface cleaning apparatus 100, the force application part 140 can be pulled up (separated from the force application part groove 123), so that the user can conveniently hold the force application part 140 to move the surface cleaning apparatus 100. Therefore, the embodiment of the application can reduce the height of the surface cleaning device 100 without affecting the convenience of the user, and is convenient for the user to use and store the surface cleaning device 100.

It should be noted that "force application portion 140 is connected to the housing assembly in a floating manner" in the embodiments of the present application means that force application portion 140 as a whole translates in the up-down direction with respect to the housing assembly, in other words, force application portion 140 translates in the up-down direction with respect to the housing assembly as a whole, rather than rotating about a certain fulcrum of force application portion 140. With this translational connection, it is possible to ensure that force application portion 140 remains parallel to the housing assembly at all times, which is more labor-efficient for the user when moving surface cleaning apparatus 100.

Referring to fig. 7, a partial cross-sectional view of a surface cleaning apparatus 100 provided in accordance with an embodiment of the present application is shown; referring to fig. 8, a partial cross-sectional view of another surface cleaning apparatus 100 is provided in accordance with an embodiment of the present application. Fig. 7 shows a pulled-up state of the force application part 140, that is, a state where the force application part 140 moves to the top within a preset stroke range; fig. 8 shows a contracted state of the urging portion 140, i.e., a state in which the urging portion 140 moves to the lowermost position within a predetermined stroke range. As can be seen from comparing fig. 7 and 8, in the pulled-up state shown in fig. 7, the force application part 140 is completely separated from the force application part groove 123, so that the user can hold the force application part 140 more conveniently, and the user can move the surface cleaning apparatus 100 conveniently; in the contracted state shown in fig. 8, a partial area of the urging portion 140 is fitted into the urging portion groove 123, so that the height of the surface cleaning apparatus 100 can be reduced, facilitating storage and use by a user. Therefore, the force application part 140 connected in a floating manner can reduce the height of the surface cleaning device 100 without affecting the convenience of the user, thereby facilitating the use and storage of the surface cleaning device 100 by the user.

It should be noted that fig. 7 and 8 are only an exemplary illustration of the pulled-up state and the contracted state of the force application portion 140 in the embodiment of the present application, and should not be taken as a limitation of the protection scope of the present application. For example, in some possible implementations, force application portion 140 may be fully nested within force application portion recess 123 in the retracted state; in the pulled-up state, the urging portion 140 is separated from the urging portion groove 123 only in a partial region.

In addition, in the embodiment of the present application, since the cleaning liquid containing tank 120 is disposed at the top of the housing 110, the force applying portion groove 123 needs to be disposed on the cleaning liquid containing tank 120. It can be appreciated that the force application portion 140 needs to withstand a greater force when the user moves the surface cleaning apparatus 100. If the force application part 140 is directly connected to the cleaning liquid containing tank 120 through the force application part connecting member, the cleaning liquid containing tank 120 may be damaged due to insufficient strength of the cleaning liquid containing tank 120; alternatively, the cleaning liquid containing tank 120 may be detached from the housing 110 due to insufficient strength of the connection between the cleaning liquid containing tank 120 and the housing 110, thereby causing damage to the surface cleaning apparatus 100. The housing 110 is more stable than the cleaning liquid containing tank 120, and therefore, in the embodiment of the present invention, the force application part 140 is connected to the top of the housing 110 through the force application part connecting member. Specifically, the force application part connecting member is connected to the top of the housing 110 after passing through the cleaning liquid receiving tank 120.

It is understood that, in some possible implementations, if the cleaning liquid containing tank 120 is not disposed on the top of the housing 110, the force application portion groove 123 may be disposed on the top of the housing 110, and the force application portion 140 is directly connected to the housing 110 through the force application portion connector (without passing through the cleaning liquid containing tank 120), which is not particularly limited in the embodiment of the present application.

With continued reference to fig. 7 and 8, in the embodiment of the present application, the force application portion 140 is elongated. It will be appreciated that to ensure that force application portion 140 can be inserted into force application portion recess 123, the shape of force application portion recess 123 should match the shape of force application portion 140. Therefore, in the present embodiment, the shape of the urging portion groove 123 is also elongated. Of course, the force application part 140 can be configured in other shapes, such as a circle, an ellipse, or other irregular shapes, according to the actual needs, and the embodiments of the present application do not limit this.

In order to ensure that the long force application part 140 can stably translate in the vertical direction, in the embodiment of the present application, two force application part connecting pieces are respectively arranged at two ends of the force application part 140. Specifically, a first end of the force application part 140 is movably connected to the top of the housing 110 through a first force application part connection structure 141, and a second end of the force application part 140 is movably connected to the top of the housing 110 through a second force application part connection structure 142. In the present embodiment, the urging portion 140 is provided in the front-rear direction, and accordingly, the first end of the urging portion 140 is the front end and the second end of the urging portion 140 is the rear end. It should be noted that, in the embodiment of the present application, the force application portion 140 is disposed in the front-rear direction for example, but it should not be taken as a limitation of the scope of the present application. For example, one skilled in the art can set the force application part 140 in the left-right direction or in an angle of 30 °, 45 °, 60 ° with respect to the front-back direction according to actual needs (etc.).

With reference to fig. 7 and 8, in the embodiment of the present application, the first force application part connection structure 141 includes a first connection shaft 1411 disposed on the top of the housing 110 and a first connection hole 1412 disposed on the first end of the force application part 140, the first connection shaft 1411 and the first connection hole 1412 are matched and movably connected in a direction perpendicular to the top of the housing 110; the second force application part connection structure 142 includes a second connection shaft 1421 disposed at the second end of the force application part 140 and a second connection hole 1422 disposed at the top of the housing 110, and the second connection shaft 1421 and the second connection hole 1422 are matched and movably connected in a direction perpendicular to the top of the housing. That is, the floating connection of the force application part 140 and the housing 110 is achieved by two shaft hole connection structures that are fitted to each other. In addition, through set up the application of force portion connecting piece of different structures at application of force portion 140 both ends, realize application of force portion 140's fool-proof design, guarantee the uniqueness of application of force portion 140's assembly, improve assembly efficiency.

In a specific implementation, at the first end of the force application portion 140, the housing 110 extends upward at a position corresponding to the first end of the force application portion 140 to form a first connection shaft 1411, that is, the first connection shaft 1411 is integrally formed with the housing 110; the first end of the forcing part 140 extends downward to form a first connection hole 1412, that is, the first connection hole 1412 and the forcing part 140 are integrally formed. The first connection shaft 1411 is inserted into the first connection hole 1412 to be movably connected in the up-and-down direction. It can be understood that the first connection shaft 1411 and the first connection hole 1412 are integrally formed with the housing 110 and the force application part 140, respectively, so that the number of parts can be reduced and the assembly is facilitated. In addition, since the cleaning liquid containing tank 120 is disposed above the housing 110, if the sealing effect of the housing 110 is not good, the cleaning liquid permeates into the interior of the housing 110, which may easily cause the surface cleaning apparatus to malfunction. In the embodiment of the present application, the first connecting shaft 1411 and the force application part 140 are integrally formed, so that the sealing performance of the housing 110 at the position can be improved.

At a second end of the force application part 140, a second connection shaft 1421 is fixed at the second end of the force application part 140 by a connector, and a second connection hole 1422 is a through hole disposed at the top of the housing 110. The second connecting shaft 1421 is inserted into the second connecting hole 1422 to be movably connected in the vertical direction. It should be noted that, since the second connecting hole 1422 is a through hole disposed at the top of the housing 110, inserting the second connecting shaft 1421 into the second connecting hole 1422 is equivalent to directly inserting the second connecting shaft 1421 into the housing 110. With this arrangement, the space inside the housing 110 can be saved, and it is convenient to arrange other functional units inside the housing 110.

As compared with the first force application part connecting structure 141 and the second force application part connecting structure 142, the sealing effect of the housing 110 is better in the first force application part connecting structure 141. Therefore, the first control plate inside the housing 110 may be disposed at a position near the first end of the force application part 140 to prevent the cleaning liquid from leaking into the housing 110 to damage the first control plate. Of course, other devices or functional units that are important or easily damaged after being wetted/wetted may be disposed inside the housing 110 at a position near the first end of the force application part 140.

In some possible implementations, in order to improve the sealing effect of the housing 110 at the second force application part connecting structure 142, a shaft hole sealing member 1423 is further provided between the second connecting shaft 1421 and the second connecting hole 1422. The shaft hole sealing member 1423 serves to seal a gap between the second connecting shaft 1421 and the second connecting hole 1422, but does not affect the relative movement of the second connecting shaft 1421 and the second connecting hole 1422.

Referring to fig. 9, a partial cross-sectional view of another surface cleaning apparatus 100 is provided for an embodiment of the present application. As shown in fig. 9, in the embodiment of the present invention, the shaft seal 1423 is an annular seal, the shaft seal 1423 is sleeved on the second connecting shaft 1421 and is pressed against the lower surface of the housing 110 by the shaft seal fixing part 14231. In some possible implementations, the shaft hole sealing member 1423 is made of a flexible material and is in interference fit with the second connecting shaft 1421 to improve the sealing effect between the second connecting shaft 1421 and the second connecting hole 1422. In a specific implementation, the shaft hole sealing member 1423 may be made of rubber or silicone, which is not limited in this embodiment.

It can be understood that, since the shaft hole connectors are respectively disposed at the two ends of the force application part 140, when the force application part 140 moves up and down, the force application part 140 can perform integral translation, that is, the force application part 140 is always kept horizontal with the bottom of the housing 110. However, due to a machining error, an assembly error and the like, when the force application portion 140 moves up and down, the movement speed of one end is too high, and the movement speed of the other end is too low, so that the force application portion 140 is stuck during the movement process, which may affect the user experience.

To this problem, the embodiment of the present application adds the force application part guide on the force application part connecting piece, and through the guiding action of the force application part guide, the force application part 140 can move up and down more smoothly, thereby improving the user experience.

With reference to fig. 3, in the present embodiment, the first force application part connecting structure 141 further includes a first guiding structure 1413, and the first guiding structure 1413 is used for restricting the first connecting shaft 1411 and the first connecting hole 1412 from moving in a direction perpendicular to the top of the housing 110. Specifically, the first guide structure 1413 includes a first guide protrusion 14131 fixedly coupled to the first end of the force application part 140, and a first guide groove 14132 provided on the housing 110, the first guide groove 14132 extending in an up-down direction to fit the first guide protrusion 14131 into the first guide groove 14132. The second force application part connecting structure 142 further includes a second guiding structure 14124, the second guiding structure 1424 includes a second guiding protrusion 14241 fixedly connected to the second end of the force application part 140, and a second guiding recess 14242 disposed on the housing 110, the second guiding recess 14242 extends in the up-down direction, and the second guiding protrusion 14241 is embedded in the second guiding recess 14242. It can be understood that the first guiding structure 1413 and the second guiding structure 1424 disposed at the two ends of the force application portion 140 can ensure that the two ends of the force application portion 140 have the same movement speed, thereby avoiding the problem that the movement speed of one end is too fast and the movement speed of the other end is too slow, which causes the force application portion 140 to be jammed during the movement process. Of course, those skilled in the art can also provide a guide groove on the force application part 140 and a corresponding guide protrusion on the housing 110; or other types of guides may be disposed between the force application portion 140 and the housing 110, which is not limited in the embodiments of the present application.

In a specific implementation, the first guiding structure 1413 and the second guiding structure 1424 may be symmetrically disposed relative to the first central axis (a central axis parallel to the left-right direction) of the force application portion 140, so as to further ensure that the two ends of the force application portion 140 have the same movement speed.

In some possible implementations, two guide protrusions and two corresponding guide grooves may be disposed at each end of the force application part 140, and the two guide protrusions and the two guide grooves are respectively disposed at two sides of the force application part 140. For example, in the implementation shown in fig. 3, a guide protrusion is disposed on each of the left and right sides of the front end of force application part 140, and a guide groove is disposed on housing 110 corresponding to each of the left and right sides of the front end of force application part 140; a guide protrusion is provided on each of left and right sides of the rear end of the force application part 140, and a guide groove is provided on each of left and right sides of the housing 110 corresponding to the rear end of the force application part 140. Through the guide protrusions and the guide grooves on the left side and the right side of the force application part 140, the left side and the right side of the force application part 140 can be guaranteed to have the same movement speed, and the problem that the force application part 140 is blocked in the movement process due to the fact that the movement speed of one side is too high and the movement speed of the other side is too low is solved.

In a specific implementation, the guide protrusions and the guide grooves on the left and right sides of the force application portion 140 may be symmetrically disposed (a central axis parallel to the front-back direction) with respect to the second central axis of the force application portion 140, so as to further ensure that the two sides of the force application portion 140 have the same movement speed.

In a possible implementation manner, a force application part resetting member is further provided between the force application part 140 and the housing assembly, and the force application part resetting member is used for resetting the force application part 140 to a position closest to the housing assembly (lowest position) under the condition that no external force is applied by the force application part 140, namely, the force application part 140 is embedded in the force application part groove 123. That is, when the user does not need to use the force application part 140, the force application part 140 can be automatically reset to the contracted state shown in fig. 8 without manually pressing the force application part 140 into the force application part groove 123, so that the use is more convenient.

In one possible implementation, a force application part damping member is further disposed between the force application part 140 and the housing assembly, and is used for providing a damping effect on the relative movement between the force application part 140 and the housing assembly when the force application part 140 applies an external force. That is, when the user needs to pull up the force application part 140, the force application part damping member can provide a damping effect, so that the force application part 140 is pulled up slowly and smoothly, and the user experience is improved. In addition, the user can avoid generating large impact force between the force application part 140 and the housing 110 when pulling up the force application part 140, and the service life of the surface cleaning device 100 can be prolonged.

In a specific implementation, the force application part resetting member and the force application part damping member may be a magnetic member (e.g., a magnet) or an elastic member (e.g., a spring), and the like, which is not particularly limited in this embodiment of the present application. In addition, the force application part resetting component and the force application part damping component can be the same or a group of components, namely, the resetting and damping effects can be realized simultaneously through the same or a group of components. The operation principle of the reset and damping will be described below by taking a magnetic member as an example.

Referring to fig. 7 and 8, in the embodiment of the present application, a first magnetic member 1441 is disposed at the first end of the force application portion 140, and a second magnetic member 1442 is disposed on the housing 110 at a position corresponding to the first end of the force application portion 140. It can be understood that when there is no external force on the force application part 140, the force application part 140 is reset to the contracted state shown in fig. 8 under the attraction of the first magnetic member 1441 and the second magnetic member 1442, that is, the reset effect is achieved. When the user needs to pull up the force application part 140, the force application part 140 can be pulled up slowly and smoothly due to the attraction effect of the first magnetic member 1441 and the second magnetic member 1442, that is, the damping effect is achieved.

It should be noted that fig. 7 and 8 are only an exemplary illustration of the embodiments of the present application, and should not be taken as limiting the scope of the present application. For example, the force application part restoring member and the force application part damping member may also be implemented by an elastic member; or a force application part resetting part and a force application part damping part are respectively arranged to realize the resetting and damping effects respectively; alternatively, the force application part resetting member and/or the force application part damping member are/is arranged at the second end of the force application part 140; alternatively, the urging portion returning member and/or the urging portion damper and the like may be provided at both ends of the urging portion 140.

In some possible application scenarios, the cables inside the housing 110 need to be connected to the outside. For example, the inside of the housing 110 needs to be connected to the outside through a power line in order to supply power to each functional unit inside the housing 110. To achieve this, the second connecting shaft 1421 may be provided in a hollow structure, that is, a connecting shaft through hole 14211 is provided in the second connecting shaft 1421. In addition, a threading hole 143 is formed in the force application portion 140, the threading hole 143 communicates with the connecting shaft through hole 14211, and the cable inside the housing 110 can extend to the outside of the surface cleaning apparatus 100 through the connecting shaft through hole 14211 and the threading hole 143.

With continued reference to fig. 1 and 3, in some possible implementations, the force application portion 140 is further provided with a key 202 and an indicator 203. Specifically, the key 202 and the indicator lamp 203 are disposed on the top of the urging portion 140. The key 202 is disposed on the force application portion 140, so that the user can pull up the force application portion 140 and trigger the key 202 at the same time, that is, the user can pull up and trigger the force application portion 140 with one hand, and the operation is convenient. Especially for users with difficulties, great convenience is provided. In addition, since the force application part 140 is usually disposed at the center of the surface cleaning apparatus 100, and the top of the force application part 140 always faces the user, the indicator lamp 203 disposed on the force application part 140 can facilitate the user to view the working state of the surface cleaning apparatus 100 in real time.

In a specific implementation, the keys 202 and the indicator lights 203 may be integrated on the second control board, and the second control board is disposed inside the force application part 140. Specifically, the key 202 and the indicator lamp 203 may be provided at the front end of the urging portion 140, and accordingly, the second control plate may be provided inside the urging portion 140 at a position close to the front end of the urging portion 140. In addition, since the force application part 140 has a hollow structure, the power line and/or signal on the second control board can extend to the inside of the housing 110 through the force application part 140 and the connecting shaft through hole 14211 of the second connecting shaft 1421, and is connected to the first control board inside the housing 110. That is to say, the cable connecting the inside and the outside of the housing 110 is always routed through the connecting shaft through hole 14211 of the second connecting shaft 1421, so as to ensure that the housing 110 is located at the front end of the force application portion 140, thereby achieving a better sealing effect.

Referring to fig. 1, in the embodiment of the present application, the distance between the liquid injection hole 1212 and the force application portion groove 123 is short, and when the user adds the cleaning liquid through the liquid injection hole 1212, if the cleaning liquid is carelessly sprinkled outside the liquid injection hole 1212, the cleaning liquid is likely to flow into the force application portion groove 123. It can be understood that, at the position of the force application part groove 123, there is a gap between the cleaning liquid containing tank 120 and the housing 110, and the cleaning liquid in the force application part groove 123 is likely to flow to the housing 110, which may cause the surface cleaning apparatus 100 to malfunction.

As shown in fig. 3, in response to this problem, the embodiment of the present invention provides a cleaning liquid containing tank sealing member 124 at the connection position of the cleaning liquid containing tank 120 and the housing 110, and the cleaning liquid containing tank sealing member 124 is used for sealing the gap between the cleaning liquid containing tank 120 and the housing 110. Specifically, the cleaning liquid containing tank sealing member 124 is provided around the force applying portion groove 123 to seal a gap between the cleaning liquid containing tank 120 and the housing 110 at the force applying portion groove 123. It can be understood that, even if the cleaning liquid flows into the force application part groove 123 after the cleaning liquid containing tank sealing member 124 is provided, the cleaning liquid is only remained at the position of the force application part groove 123, and does not seep to the position of the housing 110 at the bottom of the cleaning liquid containing tank 120, and the cleaning liquid in the force application part groove 123 can be removed by the user by tilting the surface cleaning apparatus 100 or by simple wiping.

In some possible implementations, the bottom of the surface cleaning apparatus 100 is further provided with a cavity for defining a sealed space with the surface to be cleaned. In addition, a negative pressure chamber is also provided in the surface cleaning apparatus 100, a vacuum unit is provided in the negative pressure chamber, and the negative pressure chamber is communicated with the sealed space. It will be appreciated that when the vacuum unit is operated, a negative pressure can be generated within the negative pressure chamber, which in turn generates a negative pressure within the sealed space, attracting the surface cleaning apparatus 100 to the surface to be cleaned. It will be appreciated that the surface cleaning apparatus 100 may only be attached to the surface to be cleaned when there is sufficient negative pressure in the sealed space. However, there may be a step-out area (e.g., a gap or a border of a frameless window, etc.) on the surface to be cleaned, which may result in air leakage from the enclosed space and loss of pressure when the surface cleaning apparatus 100 is walked onto the step-out area, which may result in the surface cleaning apparatus 100 falling off the surface to be cleaned.

As shown in fig. 2 and 13, in order to detect the step-on area, a conventional method is to provide an air pressure detecting hole on the bottom of the surface cleaning apparatus 100, and the air pressure detecting hole is communicated with the negative pressure chamber 155. When the air pressure detecting hole 173 is located in the step-on area, the surface cleaning apparatus 100 can detect the pressure loss signal, and then control the surface cleaning apparatus 100 to turn around or turn around to avoid the step-on area. However, since the air pressure detecting hole 173 directly communicates with the negative pressure chamber 155, foreign substances (debris, hair, etc. on the surface to be cleaned) on the surface to be cleaned easily enter the negative pressure chamber 155 through the air pressure detecting hole 173, causing the negative pressure chamber 155 to be clogged, thereby causing the surface cleaning apparatus 100 to be damaged.

In view of the above problems, the embodiment of the present application provides a cleaning unit assembly, when the step-on empty area is detected by the air pressure detecting unit 170 on the cleaning unit assembly, the foreign matter on the surface to be cleaned is not easy to enter the negative pressure cavity 155, and then the negative pressure cavity 155 is prevented from being blocked, thereby improving the reliability of the surface cleaning device 100. The following detailed description is made with reference to the accompanying drawings.

Referring to fig. 10, a schematic perspective view of another surface cleaning apparatus 100 according to an embodiment of the present disclosure is shown. Wherein the bottom of the surface cleaning apparatus 100 of fig. 10 is free of the cleaning unit bracket 150 and the cleaning unit 160. Referring to fig. 11, a schematic perspective view of a cleaning unit bracket 150 according to an embodiment of the present disclosure is shown. The cleaning unit bracket 150 shown in figure 11 is mounted to the bottom of the surface cleaning apparatus 100 shown in figure 10 as shown in figure 12. Referring to fig. 13, a schematic perspective view of a cleaning unit 160 according to an embodiment of the present disclosure is shown, where the cleaning unit 160 shown in fig. 13 is installed at the bottom of the surface cleaning apparatus 100 shown in fig. 12, as shown in fig. 14.

Referring to fig. 10-14, in the present embodiment, a cleaning unit holder sealing member 151 is disposed at the bottom of the housing 110 of the surface cleaning apparatus 100, and the cleaning unit holder sealing member 151 is an annular sealing member. When the cleaning unit holder 150 is coupled to the bottom of the housing 110, a gap between the housing 110 and the cleaning unit holder 150 may be sealed by the cleaning unit holder sealing member 151, and a negative pressure chamber 155 is formed between the housing 110 and the cleaning unit holder 150. A vacuum unit 206 is provided in the sub-pressure chamber 155, and it is understood that a sub-pressure can be generated in the sub-pressure chamber 155 when the vacuum unit 206 is operated. The bottom of the cleaning unit bracket 150 is provided with a cavity (cleaning unit bracket hollowed-out area 154) for defining a sealed space with the surface to be cleaned. The cleaning unit 160 is disposed between the cleaning unit bracket 150 and the surface to be cleaned, and may seal the sealed space. In addition, a vent area 152 is provided on the cleaning unit holder 150, and a vent hole communicating a negative pressure chamber 155 at the top of the cleaning unit holder 150 and a sealed space at the bottom of the cleaning unit holder 150 is provided in the vent area 152. That is, the negative pressure chamber 155 communicates with the sealed space. Therefore, when the vacuum unit 206 in the negative pressure chamber 155 is operated, a negative pressure is also generated in the sealed space to attach the surface cleaning apparatus 100 to the surface to be cleaned.

In order to detect the step-on area of the surface to be cleaned, the air pressure detecting unit 170 is disposed at the bottom of the surface cleaning apparatus 100 according to the embodiment of the present application, and the air pressure detecting unit 170 includes an air pressure detecting hole 173, an air pressure detecting channel 172, and an air pressure balancing hole 171. The air pressure detection hole 173 is communicated with the air pressure balance hole 171 through the air pressure detection passage 172, and the air pressure balance hole 171 is communicated with the negative pressure chamber 155. It will be appreciated that when there is an air leak at the air pressure detecting hole 173, the pressure in the negative pressure chamber 155 is lost, and therefore, the foot-on region of the surface to be cleaned can be detected through the air pressure detecting hole 173.

In practical applications, in order to prevent the foreign materials on the surface to be cleaned from entering the negative pressure chamber 155 through the air pressure balancing hole 171, in the embodiment of the present application, the air pressure balancing hole 171 is covered by the cleaning unit 160, as shown in fig. 14. It should be noted that although the air pressure balance hole 171 is covered by the cleaning unit 160, since the air pressure balance hole 171 is communicated through the air pressure detection passage 172, the cleaning unit 160 does not completely block the air pressure balance hole 171. In the embodiment of the present application, since the air pressure balancing hole 171 is covered by the cleaning unit 160, foreign substances do not directly enter the inside of the negative pressure chamber 155 through the air pressure balancing hole 171. In addition, if there is a foreign object in the air pressure detection hole 173, since the air pressure detection hole 173 is not directly connected to the negative pressure chamber 155, the foreign object in the air pressure detection hole 173 is blocked by the air pressure detection passage 172 and is not easily introduced into the negative pressure chamber 155. If a foreign object enters the air pressure detecting passage 172 through the air pressure detecting hole 173, the air pressure detecting passage 172 is blocked, which only causes the air pressure detecting unit 170 to malfunction and does not cause the overall machine to malfunction.

Referring to fig. 11, in the present embodiment, an air pressure detecting recess 1721 is formed at the bottom of the cleaning unit holder 150, the cleaning unit 160 covers the air pressure detecting recess 1721, and an air pressure detecting channel 172 is defined between the air pressure detecting recess 1721 and the cleaning unit 160. That is, the air pressure detecting passage 172 is formed by the combination of the air pressure detecting groove 1721 provided on the cleaning unit holder 150 and the cleaning unit 160. This arrangement reduces the number of parts in the surface cleaning apparatus 100 and makes the overall structure of the surface cleaning apparatus 100 more compact. In addition, when the air pressure detecting passage 172 is blocked due to foreign matter entering the air pressure detecting passage 172, the cleaning unit 160 is directly removed, and the air pressure detecting recess 1721 can be completely exposed to the outside, facilitating cleaning by a user. Of course, a person skilled in the art may set a separate air pressure detecting channel 172 to connect the air pressure detecting hole 173 and the air pressure balancing hole 171 according to actual needs, and the embodiment of the present application is not limited thereto.

It is understood that the cleaning unit 160 is generally made of a flexible material, such as rag, sponge, paper, etc. If negative pressure exists in the air pressure detecting channel 172 and the cleaning unit 160 collapses toward the air pressure detecting recess 1721 due to the negative pressure, the air pressure detecting channel 172 may be blocked, and the air pressure detecting unit 170 may malfunction.

To solve this problem, in a possible implementation manner, an air pressure detecting groove support 17211 is further disposed in the air pressure detecting groove 1721, and the air pressure detecting groove support 17211 is used for supporting a space between the air pressure detecting groove 1721 and the cleaning unit 160 to ensure that the air flow can be conducted in the air pressure detecting channel 172. In a specific implementation, the air pressure detecting groove support 17211 may be a rib extending downward within the air pressure detecting groove 1721, through which the cleaning unit 160 is supported. It can be understood that if the ribs are too short, i.e., the ribs are compressed inside the air pressure detecting groove 1721, the supporting effect on the cleaning unit 160 is poor; conversely, if the ribs are too high, protrude through the air pressure detecting recess 1721, and protrude at the bottom of the cleaning unit holder 150, the sealing effect of the surface cleaning apparatus 100 may be compromised. Therefore, it is preferable that the ends of the ribs be flush with the bottom of the cleaning unit bracket 150.

It can be understood that when there is a step-out area on the surface to be cleaned, the closer the air pressure detecting hole 173 is to the edge of the surface cleaning apparatus 100, the earlier the step-out area can be detected, i.e., the more sensitive the air pressure detecting unit 170 is. However, the negative pressure chamber 155 cannot extend indefinitely to the edge of the surface cleaning apparatus 100 due to the restriction of the negative pressure chamber 155 by the structure of the functional units inside the surface cleaning apparatus 100.

To address this problem, in the embodiment of the present application, the air pressure balance hole 171 is disposed inside the negative pressure chamber 155, and the air pressure detection hole 173 is extended to the outside of the negative pressure chamber 155 and a position close to the edge of the surface cleaning apparatus 100 through the air pressure detection channel 172, so as to improve the detection sensitivity. That is, the air pressure balancing hole 171 is provided inside the negative pressure chamber 155, and the air pressure detecting hole 173 is provided outside the negative pressure chamber 155. Note that in the present embodiment, "the air pressure balance hole 171 is provided inside the negative pressure chamber 155, and the air pressure detection hole 173 is provided outside the negative pressure chamber 155" means that the projection in the up-down direction, the air pressure balance hole 171 is provided inside the negative pressure chamber 155, and the air pressure detection hole 173 is provided outside the negative pressure chamber 155.

The corner regions of the surface cleaning apparatus 100 are more likely to contact edges preferentially during walking of the surface to be cleaned by the surface cleaning apparatus 100, and therefore, in the embodiment of the present application, the air pressure detecting unit 170 may be disposed at the corner regions of the surface cleaning apparatus 100. Specifically, one air pressure detecting unit 170 may be provided at each corner of the surface cleaning apparatus 100. For example, in the surface cleaning apparatus 100 provided in the example of the present application, if there are 4 corners, one air pressure detecting unit 170 is disposed at each of the 4 corners, as shown in fig. 14. Of course, a greater or lesser number of air pressure detecting units 170 may be disposed on the surface cleaning apparatus 100 by those skilled in the art, and the embodiment of the present application is not limited thereto.

Referring to fig. 15, a schematic diagram of a surface cleaning apparatus in the prior art is shown. As shown in fig. 15, a cleaning unit is disposed at the bottom of the surface cleaning apparatus, and a hollow area is disposed at a position corresponding to the vent hole on the cleaning unit to facilitate the flow of the air flow. However, this arrangement results in a small area of the cleaning unit, and the user may need to frequently replace the cleaning unit when performing the cleaning operation, reducing the cleaning efficiency.

To solve this problem, the embodiment of the present application provides a design scheme, and under the condition that the size of the cleaning unit bracket 150 is fixed, the area of the cleaning unit 160 can be increased, so as to improve the cleaning efficiency. The following detailed description is made with reference to the accompanying drawings.

As shown in fig. 11 to 14, in the present embodiment, the cleaning unit holder 150 includes a vent area 152 and a non-vent area 153, and the vent area 152 is provided with a vent for communicating a negative pressure chamber 155 on the top of the cleaning unit holder 150 and a sealed space on the bottom of the cleaning unit holder 150. The cleaning unit 160 includes a first cleaning unit area 161 and a second cleaning unit area 162, the first cleaning unit area 161 covering the non-vent area 153, and the second cleaning unit area 162 covering the vent area 152. That is, in the embodiment of the present application, the cleaning unit 160 is disposed at the bottom of both the vent region 152 and the non-vent region 153 of the cleaning unit bracket 150 (the cleaning unit 160 is not disposed at the bottom of the vent region 152 in the prior art), so that the area of the cleaning unit 160 can be increased under the condition that the size of the cleaning unit bracket 150 is fixed, and the cleaning efficiency can be further improved.

As described above, the vent holes of the vent hole region 152 are used to communicate with the negative pressure chamber 155 at the top of the cleaning unit bracket 150 to clean the sealed space at the bottom of the unit bracket 150, and therefore, it is necessary to secure the air flow fluidity of the vent hole region 152.

In one implementation, a vent area support 1521 is provided at the vent area 152, and the vent area support 1521 is used to support the space between the vent area 152 and the second cleaning unit area 162, so as to prevent the cleaning unit 160 from collapsing toward the vent area 152 and blocking the vent. In a specific implementation, the vent region supporting member 1521 may be a rib extending downward from the bottom of the vent region 152, and the rib supports the second cleaning unit region 162, so that a certain space is formed between the vent region 152 and the second cleaning unit region 162, thereby ensuring the flowability of the airflow. The shape of the vent region support 1521 is not particularly limited in the embodiments of the present application.

In another implementation, a cleaning unit 160 with better air permeability is disposed in the second cleaning unit region 162, that is, the second cleaning unit region 162 has better air permeability relative to the first cleaning unit region 161, so as to ensure the fluidity of the airflow in the vent region 152. Illustratively, the second cleaning unit region 162 is thinner than the first cleaning unit region 161 to enhance air permeability of the second cleaning unit region 162; alternatively, the material of the cleaning unit 160 used in the second cleaning unit region 162 has better air permeability than the material of the cleaning unit 160 used in the first cleaning unit region 161, so as to enhance the air permeability of the second cleaning unit region 162.

In a specific implementation, the non-vent region 153 on the cleaning unit bracket 150 is disposed around the vent region 152, and accordingly, the first cleaning unit region 161 on the cleaning unit 160 is disposed around the second cleaning unit 160 to ensure the sealability of the vent region 152. In addition, the first cleaning unit area 161 and the second cleaning unit area 162 may be integrally formed, or a connecting member may be used to connect the first cleaning unit area 161 and the second cleaning unit area 162 together. For example, the first cleaning unit area 161 and the second cleaning unit area 162 may be connected together by using a bonding, sewing, or ultrasonic welding process, which is not limited in the embodiments of the present application.

In practical applications, some of the functional units mounted at the bottom of the housing 110 need to extend to the outside of the cleaning unit holder 150 and the cleaning unit 160, i.e., cannot be covered by the cleaning unit holder 150 and the cleaning unit 160. Therefore, the cleaning unit holder 150 is further provided with a cleaning unit holder hollow area 154, and the cleaning unit 160 is further provided with a cleaning unit hollow area 163. It is understood that in order to fit the functional unit, the cleaning unit holder hollow-out region 154 and the cleaning unit hollow-out region 163 should be matched to the shape of the functional unit and the position where the functional unit is disposed on the housing 110. Of course, the cleaning unit openwork regions 163 should match the cleaning unit bracket openwork regions 154.

In one possible implementation, the bottom of the housing 110 is provided with a first traveling unit and a second traveling unit (e.g., crawler wheel assemblies 181 disposed on the left and right sides of the bottom of the housing 110 in fig. 10). Accordingly, a first cleaning unit holder hollow-out region 1541 and a second cleaning unit holder hollow-out region 1542 are provided on the cleaning unit holder 150, as shown in fig. 11; the cleaning unit 160 is provided with a first cleaning unit hollow area 1631 and a second cleaning unit hollow area 1632, as shown in fig. 13. The first cleaning unit hollow-out region 1631 is matched with the first cleaning unit bracket hollow-out region 1541, and the second cleaning unit hollow-out region 1632 is matched with the second cleaning unit bracket hollow-out region 1542; the first cleaning unit hollowed-out region 1631 and the first cleaning unit bracket hollowed-out region 1541 are used for assembling the first walking unit, and the second cleaning unit hollowed-out region 1632 and the second cleaning unit bracket hollowed-out region 1542 are used for assembling the second walking unit, as shown in fig. 14.

In some possible implementations, the bottom of the housing 110 is further provided with a switch unit 204, and a user can turn on or off the power supply of the surface cleaning apparatus 100 through the switch unit 204. Since the user needs to operate the switch unit 204, the switch unit 204 also needs to be located outside the cleaning unit holder 150 and the cleaning unit 160. Therefore, a third cleaning unit bracket hollow-out region 1543 matched with the switch unit 204 is further provided on the cleaning unit bracket 150, as shown in fig. 11; a third cleaning unit hollow region 1633 matched with the switch unit 204 is also provided on the cleaning unit 160, as shown in fig. 13. The third cleaning unit hollow-out area 1633 is matched with the third cleaning unit bracket hollow-out area 1543, and the third cleaning unit hollow-out area 1633 and the third cleaning unit bracket hollow-out area 1543 are used for assembling the switch unit 204, as shown in fig. 14.

It is understood that in practical applications, there may be other functional units on the bottom of the housing 110 that need to extend to the outside of the cleaning unit bracket 150 and the cleaning unit 160, and corresponding hollow areas need to be provided on the cleaning unit bracket 150 and the cleaning unit 160 according to the shape and position of the functional units, which is not limited in this embodiment of the present application.

Referring to fig. 10-14, the cleaning unit frame hollow-out

areas

154 and 163 define a sealed space with the surface to be cleaned. For example, in the implementation shown in fig. 10-14, there are 3 sealed spaces that coexist, corresponding to the first cleaning unit bracket hollowed-out region 1541 and the first cleaning unit hollowed-out region 1631, respectively; a sealed space corresponding to the second cleaning unit bracket hollow-out region 1542 and the second cleaning unit hollow-out region 1632; the third cleaning unit bracket hollow-out area 1543 and the third cleaning unit bracket hollow-out area 1633 correspond to a sealed space.

When a negative pressure is generated in the sealed space, the surface cleaning apparatus 100 may be adsorbed to the surface to be cleaned. In order to ensure a good sealing property of the sealed space, in the embodiment of the present application, the non-vent hole area 153 is disposed around the cleaning unit holder hollow area 154, and the first cleaning unit area 161 is disposed around the cleaning unit hollow area 163. That is, the cleaning unit holder hollow-out region 154 and the cleaning unit hollow-out region 163 are sealed around by the non-vent hole region 153 and the first cleaning unit region 161, and thus it is possible to ensure that the sealed space has better sealability.

In some possible implementations, the cleaning unit 160 is detachably attached to the bottom of the cleaning unit bracket 150 to facilitate removal and replacement of the cleaning unit 160. Specifically, a hook and loop fastener 205 is further provided at the bottom of the cleaning unit bracket 150, and the cleaning unit 160 may be connected to the bottom of the cleaning unit bracket 150 by the hook and loop fastener 205. Of course, the cleaning unit 160 may be detachably connected to the cleaning unit bracket 150 by other connectors, which is not limited in the embodiments of the present application.

With continued reference to fig. 2 and 16, in the present embodiment, the walking unit at the bottom of the housing 110 is a track wheel assembly 181, i.e. the surface cleaning apparatus 100 is driven by the track wheel assembly 181 to walk on the surface to be cleaned. In practical applications, after the surface cleaning apparatus 100 is operated for a long time, the outer surface of the crawler 1813 may be stained more, which results in a decrease in friction of the crawler 1813, and further may cause a slip phenomenon between the crawler 1813 and the surface to be cleaned, which affects the cleaning effect. This phenomenon is particularly noticeable when the surface cleaning apparatus 100 sprays cleaning liquid on the surface to be cleaned.

To solve this problem, as shown in fig. 16 to 21, an embodiment of the present application provides a travel unit assembly 180, which includes a track wheel assembly 181 and a track cleaning assembly 182, where the track cleaning assembly 182 includes a track cleaning transmission member 1821 and a track cleaning member 1822, the track cleaning member 1822 abuts against an outer surface of a track 1813, and the track wheel assembly 181 is configured to drive the track cleaning transmission member 1821 to move, so as to drive the track cleaning member 1822 to rotate, thereby cleaning the track 1813. The crawler belt 1813 can be kept in a cleaning state all the time by the crawler belt cleaning assembly 182, so that a slipping phenomenon between the crawler belt 1813 and a surface to be cleaned is avoided, and the reliability of the surface cleaning apparatus 100 is improved. The following detailed description is made with reference to the accompanying drawings.

Referring to fig. 16, a schematic perspective view of a walking unit assembly 180 according to an embodiment of the present disclosure is shown; referring to FIG. 17, an exploded view of a track cleaning assembly 182 is provided for an embodiment of the present application. As shown in fig. 16 and fig. 17, the walking unit assembly 180 includes a crawler wheel assembly 181, the crawler wheel assembly 181 includes a driving wheel 1811, a driven wheel 1812 and a crawler track 1813, the rotation axes of the driving wheel 1811 and the driven wheel 1812 are parallel, the crawler track 1813 is covered on the outer side of the driving wheel 1811 and the driven wheel 1812, and when the driving wheel 1811 rotates, the driven wheel 1812 and the crawler track 1813 are driven to rotate synchronously. It will be appreciated that as the track wheel assembly 181 drives the surface cleaning apparatus 100, the outer surface of the track 1813 is in direct contact with the surface to be cleaned, and thus the outer surface of the track 1813 is prone to staining after the surface cleaning apparatus 100 has been in operation for an extended period of time.

In order to clean the tracks 1813, the walking unit assembly 180 of the present application further includes a track cleaning assembly 182 coupled to the track wheel assembly 181, the track cleaning assembly 182 includes a track cleaning transmission member 1821 and a track cleaning member 1822, the track cleaning member 1822 abuts against an outer surface of the tracks 1813, and the track wheel assembly 181 is configured to drive the track cleaning transmission member 1821 to move, so as to drive the track cleaning member 1822 to rotate, thereby cleaning the tracks 1813.

In one possible implementation, track cleaning drive 1821 includes: a first track cleaning drive wheel 18211, a second track cleaning drive wheel 18212 and a third track cleaning drive wheel 18213. The first track cleaning drive wheel 18211 abuts the outer surface of the track 1813 and as the track 1813 rotates, the track 1813 rotates the first track cleaning drive wheel 18211 under the influence of friction. The second track cleaning drive wheel 18212 is coaxially disposed with the first track cleaning drive wheel 18211 (the second track cleaning drive wheel 18212 is fixed to the same shaft as the first track cleaning drive wheel 18211), and when the first track cleaning drive wheel 18211 rotates, the second track cleaning drive wheel 18212 is driven to rotate at the same angular velocity. The third track cleaning drive wheel 18213 is drivingly connected to the second track cleaning drive wheel 18212 such that rotation of the second track cleaning drive wheel 18212 causes rotation of the third track cleaning drive wheel 18213. Illustratively, the third track cleaning drive wheel 18213 and the second track cleaning drive wheel 18212 are both gears, and the third track cleaning drive wheel 18213 is engaged with the second track cleaning drive wheel 18212, such that when the second track cleaning drive wheel 18212 rotates, the third track cleaning drive wheel 18213 is driven to rotate at the same linear velocity.

In addition, the endless track cleaning elements 1822 are coaxially disposed with the third endless track cleaning drive wheel 18213 (the endless track cleaning elements 1822 and the third endless track cleaning drive wheel 18213 are mounted on the same drive shaft) such that rotation of the third endless track cleaning drive wheel 18213 causes the endless track cleaning elements 1822 to rotate. Since the track cleaners 1822 abut the outer surfaces of the tracks 1813, cleaning of the tracks 1813 is achieved as the track cleaners 1822 rotate.

That is, in the present embodiment, the cleaning of the crawler 1813 is achieved by the crawler 1813 moving the crawler cleaning transmission member 1821 and further rotating the crawler cleaning member 1822. In some possible implementations, cleaning of the tracks 1813 can also be achieved by moving the track cleaning drive member 1821 with the drive wheel 1811 or the driven wheel 1812, which in turn rotates the track cleaning member 1822.

Referring to fig. 18, a schematic structural diagram of another walking unit assembly 180 according to an embodiment of the present application is shown. FIG. 18 differs from FIG. 16 in that in FIG. 18 the track cleaning drive member 1821 is moved by the drive wheel 1811, which in turn rotates the track cleaning member 1822. Specifically, track cleaning drive 1821 includes a fourth track cleaning drive wheel 18214, a fifth track cleaning drive wheel 18215, and a track cleaning drive belt 18216, the rotational axes of fourth track cleaning drive wheel 18214 and fifth track cleaning drive wheel 18215 being parallel, track cleaning drive belt 18216 being wrapped around the outside of fourth track cleaning drive wheel 18214 and fifth track cleaning drive wheel 18215. A fourth endless track cleaning drive wheel 18214 is arranged coaxially with the drive wheel 1811 (fourth endless track cleaning drive wheel 18214 is fixed to the same drive shaft as drive wheel 1811) so that when drive wheel 1811 rotates, fourth endless track cleaning drive wheel 18214 is caused to rotate at the same angular velocity. Since the fourth track cleaning drive wheel 18214, the fifth track cleaning drive wheel 18215 and the track cleaning belt 18216 comprise a belt assembly, the fifth track cleaning drive wheel 18215 may be rotated by the track cleaning belt 18216 as the fourth track cleaning drive wheel 18214 rotates.

In addition, the track cleaning members 1822 are coaxially disposed with the fifth track cleaning drive wheel 18215 (the track cleaning members 1822 are fixed to the same drive shaft as the fifth track cleaning drive wheel 18215) such that rotation of the fifth track cleaning drive wheel 18215 causes the track cleaning members 1822 to rotate. Since the track cleaners 1822 abut the outer surfaces of the tracks 1813, cleaning of the tracks 1813 is achieved as the track cleaners 1822 rotate.

It will be appreciated that in the implementation shown in figure 18, the track cleaning drive member 1821, and thus the track cleaning member 1822, may also be moved by the driven wheel 1812. For details, reference may be made to the description of the above embodiments, and for brevity, no further description is provided herein.

Referring to fig. 19, a schematic diagram of the transmission principle of the walking unit assembly 180 shown in fig. 16 is shown. As shown in fig. 19, drive wheel 1811 rotates in a counter-clockwise direction at an angular velocity of n1, which rotates track 1813 in a counter-clockwise direction, which in turn rotates first track cleaning drive wheel 18211 in a clockwise direction at an angular velocity of n 2. Since the second track cleaning drive wheel 18212 is coaxially disposed with the first track cleaning drive wheel 18211, the second track cleaning drive wheel 18212 also rotates in a clockwise direction at an angular velocity n 2. The second track cleaning drive wheel 18212 is engaged with the third track cleaning drive wheel 18213, and the second track cleaning drive wheel 18212 drives the third track cleaning drive wheel 18213 to rotate in a counter-clockwise direction at an angular velocity n 3. Since the track cleaning members 1822 are coaxially disposed with the third track cleaning drive wheel 18213, the track cleaning members 1822 also rotate in a counter-clockwise direction at an angular velocity n 3. That is, the angular velocity directions of the track cleaning members 1822 and the tracks 1813 are made the same (both rotated in a counterclockwise direction) by the transmission of the track cleaning transmission member 1821. Since the track cleaners 1822 circumscribe the tracks 1813, when the angular velocity of the track cleaners 1822 is the same as the angular velocity of the tracks 1813, the linear velocities at the contact points of the track cleaners 1822 and the tracks 1813 are opposite, which in turn can produce a greater relative displacement between the track cleaners 1822 and the tracks 1813, increasing the cleaning of the tracks 1813. It is understood that when the driving wheel 1811 rotates clockwise, the track cleaning elements 1822 are also driven to rotate clockwise, and the description of the embodiment of the present invention is omitted.

Of course, in some possible implementations, the track cleaners 1822 and the tracks 1813 may be configured to rotate at different angular velocity directions, so that the linear velocity directions are the same at the contact points of the track cleaners 1822 and the tracks 1813. However, it should be ensured that the linear velocities of the track cleaners 1822 and the tracks 1813 are different to ensure that relative displacement between the track cleaners 1822 and the tracks 1813 can occur to clean the tracks 1813.

With continued reference to figures 16-18, in the present embodiment, the track cleaner 1822 has a width that matches the width of the track 1813. Specifically, the track cleaners 1822 have the same width as the tracks 1813. It is understood that the track cleaners 1822 can cover the entire width of the tracks 1813, with the track cleaners 1822 having the same width as the tracks 1813. Conversely, if the width of the track cleaner 1822 is less than the width of the track 1813, there may be an area on the track 1813 that cannot be cleaned, resulting in poor cleaning of the track 1813. If the width of the track cleaner 1822 is greater than the width of the track 1813, although the entire width of the track 1813 can be covered, the portion of the track cleaner 1822 that extends beyond the width of the track 1813 does not have a cleaning effect on the track 1813, resulting in waste of the track cleaner 1822 and increased costs.

In addition, in the present embodiment, the rotational axes of the track cleaners 1822 and the rotational axes of the tracks 1813 are parallel. When the axis of rotation of the track cleaner 1822 and the axis of rotation of the tracks 1813 are parallel, it is possible to ensure that the forces between the track cleaner 1822 and the tracks 1813 are uniform, with the same cleaning effect across the outer surface of the tracks 1813. Conversely, if the axis of rotation of the track cleaner 1822 is at an angle to the axis of rotation of the track 1813, the forces between the track cleaner 1822 and the track 1813 may be uneven, resulting in better cleaning on one side of the track 1813 and less cleaning on the other side of the track 1813. In addition, uneven forces between the track cleaning members 1822 and the tracks 1813 can also affect the useful life of the track cleaning assembly 182, making the track cleaning assembly 182 susceptible to damage.

In a specific implementation, the track cleaning members 1822 may be felt or rag, as shown in FIG. 17. Of course, other types of track cleaners 1822 can be configured by one skilled in the art depending on the environment in which surface cleaning apparatus 100 is to be used.

Referring to FIG. 20, a schematic perspective view of a track cleaning element 1822 is provided according to an embodiment of the present disclosure. As shown in fig. 20, the caterpillar cleaning member 1822 is a brush, and specifically, the brush includes a brush body 18221 and bristles 18222, and the bristles 18222 are rooted on the brush body 18221 and extend toward the periphery of the brush body 18221. The brush body 18221 may be made of rubber or silica gel, which is not limited in this application.

Corresponding to the above embodiments, the embodiments of the present application further provide a walking and driving unit assembly.

Referring to fig. 21, a schematic perspective view of a walking and driving unit assembly according to an embodiment of the present application is shown. As shown in fig. 21, the walking and driving unit assembly includes a walking unit assembly 180 and a driving unit assembly 190. The driving unit assembly 190 is used for driving the walking unit assembly 180 to move, so as to drive the surface cleaning device 100 to walk on the surface to be cleaned. Specifically, the driving unit assembly 190 includes a driving member 191 (e.g., a driving motor) and a gear box 192, and the driving member 191 is in transmission connection with the driving traveling unit assembly 180 through the gear box 192. When the driving member 191 rotates, the driving wheel 1811 in the traveling unit assembly 180 is driven to rotate through the gear box 192, and the crawler 1813 is driven to rotate. For details of the walking unit assembly 180, reference may be made to the description of the above embodiments, and for brevity, the detailed description is omitted here.

It should be noted that the embodiments of the present application do not limit the product form of the surface cleaning apparatus.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.

The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A cleaning unit assembly characterized by a bottom portion and a top portion defined thereon, the bottom portion being proximate to a surface to be cleaned and the top portion being distal from the surface to be cleaned, the cleaning unit assembly comprising:

a cleaning unit bracket for attachment to the bottom of a housing of a surface cleaning apparatus, a negative pressure chamber being defined between the cleaning unit bracket and the housing;

a cleaning unit connected to a bottom of the cleaning unit bracket;

atmospheric pressure detecting element, atmospheric pressure detecting element is including setting up atmospheric pressure inspection hole and setting on the clean unit are in atmospheric pressure balance hole on the clean unit support, atmospheric pressure balance hole with the negative pressure chamber is linked together, clean unit covers atmospheric pressure balance hole, atmospheric pressure inspection hole with atmospheric pressure balance hole is linked together through atmospheric pressure detection passageway, at the perpendicular to the projection in the direction of clean unit support, atmospheric pressure inspection hole is located the negative pressure chamber is outside, atmospheric pressure balance hole is located negative pressure intracavity portion.

2. The cleaning unit assembly of claim 1, wherein the bottom of the cleaning unit bracket is provided with an air pressure detection groove, the cleaning unit covers the air pressure detection groove, and the air pressure detection channel is defined between the air pressure detection groove and the cleaning unit.

3. The cleaning unit assembly of claim 2, wherein an air pressure detecting groove supporter is further provided in the air pressure detecting groove, the air pressure detecting groove supporter supporting a space between the air pressure detecting groove and the cleaning unit.

4. The cleaning unit assembly of claim 1, wherein the air pressure detection unit is disposed at a corner region of the cleaning unit assembly.

5. The cleaning unit assembly of claim 4, wherein one air pressure detecting unit is provided at each corner region of the cleaning unit assembly.

6. The cleaning unit assembly of claim 1,

the cleaning unit bracket comprises a vent hole area and a non-vent hole area, and the vent hole area is provided with a vent hole communicated with the negative pressure cavity;

the cleaning unit includes a first cleaning unit area covering the non-vent area and a second cleaning unit area covering the vent area.

7. The cleaning unit assembly of claim 6, wherein the vent region is further provided with a vent region support for supporting a space between the vent region and the second cleaning unit region.

8. The cleaning unit assembly of claim 6,

a non-vent area on the cleaning unit support is disposed around the vent area, and a first cleaning unit area on the cleaning unit is disposed around the second cleaning unit;

the cleaning unit bracket is also provided with a hollow-out area of the cleaning unit bracket, and the non-vent hole area is arranged around the hollow-out area of the cleaning unit bracket;

the cleaning unit is further provided with a cleaning unit hollow area, the first cleaning unit area surrounds the cleaning unit hollow area, and the cleaning unit hollow area is matched with the cleaning unit support hollow area.

9. The cleaning unit assembly of claim 8,

the cleaning unit support hollowed-out area comprises a first cleaning unit support hollowed-out area, a second cleaning unit support hollowed-out area and a third cleaning unit support hollowed-out area, and the vent area is located between the first cleaning unit support hollowed-out area and the second cleaning unit support hollowed-out area;

the cleaning unit hollowed-out area comprises a first cleaning unit hollowed-out area, a second cleaning unit hollowed-out area and a third cleaning unit hollowed-out area, the first cleaning unit hollowed-out area is matched with the first cleaning unit support hollowed-out area, the second cleaning unit hollowed-out area is matched with the second cleaning unit support hollowed-out area, and the third cleaning unit hollowed-out area is matched with the third cleaning unit support hollowed-out area;

the first cleaning unit hollowed-out area and the first cleaning unit support hollowed-out area are used for assembling a first walking unit, the second cleaning unit hollowed-out area and the second cleaning unit support hollowed-out area are used for assembling a second walking unit, and the third cleaning unit hollowed-out area and the third cleaning unit support hollowed-out area are used for assembling a switch unit.

10. A surface cleaning apparatus, comprising:

a housing;

the cleaning unit assembly of any one of claims 1-9;

wherein the housing and the cleaning unit bracket are sealingly connected.