WO2022228237A1

WO2022228237A1 - Base station and surface cleaning system

Info

Publication number: WO2022228237A1
Application number: PCT/CN2022/087944
Authority: WO
Inventors: 王珊珊; 唐成; 段飞
Original assignee: 北京顺造科技有限公司; 苏州小顺科技有限公司
Priority date: 2021-02-10
Filing date: 2022-04-20
Publication date: 2022-11-03
Also published as: CN113243850A; CN113303725B; CN113425205B; CN113349687B; CN215899565U; CN113425205A; CN115251788B; CN113349688A; CN113303724A; CN115251788A; CN113349688B; CN113243855A; CN113243855B; CN113303724B; CN115067839B; WO2022267894A1; CN113367622B; CN113349687A; CN113303725A; CN113243823B

Abstract

A base station (100), comprising: a cleaning liquid supply portion (151), the cleaning liquid supply portion (151) being used for storing a cleaning liquid; a charging structure (160), the charging structure (160) being used for providing electric energy to a surface cleaning apparatus (200) docked on the base station (100), and charging the surface cleaning apparatus (200); and a connection interface (170), the connection interface (170) being connected to the cleaning liquid supply portion (151). When the surface cleaning apparatus (200) is docked on the base station (100), a cleaning liquid storage portion of the surface cleaning apparatus (200) is connected to the connection interface (170), such that the cleaning liquid in the cleaning liquid supply portion (151) is conveyed to the cleaning liquid storage portion through the connection interface (170), or the cleaning liquid in the cleaning liquid storage portion is conveyed to the cleaning liquid supply portion (151) through the connection interface (170); and the position where the connection interface (170) is located is lower than the position where the charging structure (160) is located.

Description

Base station and surface cleaning system

technical field

The present disclosure relates to a base station and a surface cleaning system.

Background technique

Today's surface cleaning units are used to wet clean hard floors or short-pile carpets. The unit typically has one or more brushes or cleaning discs made of woolen material that can be used to scrub stubborn dirt from the floor by adding water or a water/detergent mixture.

When the machine moves on the dirt, the dirt that has been wiped off by the roller brush and dissolved by the water or water/detergent mixture is sucked up with the cleaning heads arranged along the moving direction of the roller brush. In the technique of setting the cleaning disc, it is not necessary to set The cleaning head, the dirt is directly absorbed by the cleaning material on the cleaning disc.

However, stubborn stains are often difficult to remove. Milk stains, juices and sauces, etc., are scattered on the surface of the floor. After the water evaporates, it will form stubborn stains on the cleaning surface that are difficult to remove. Often, not all of this stubborn dirt can be removed by vacuuming during the scrubbing process, so some of it remains on the floor, reducing the quality of the cleaning.

In order to improve the cleaning quality, cleaning is usually done by mixing the cleaning agent and water. The cleaning agent and water are mixed in the clean water tank of the surface cleaning device in a certain proportion to form a cleaning fluid, and then the cleaning fluid is applied to the roller brush or cleaning On the plate, to achieve a relatively good cleaning effect of stubborn stains. However, this means that the proportion of the cleaning agent is controlled, and the cleaning process of this cleaning agent must also be carried out exclusively, and this cleaning agent is not required to be applied to every part of the cleaned surface in order to achieve the best cleaning quality and hygiene. This results in increased time spent and additional costs.

Another way is to implement steam treatment. A hot steam generating device is installed in the surface cleaning device. When cleaning a specific surface with stubborn stains, through the input of a control signal, the atomizing heating device of the surface cleaning device will replace the water in the clean water tank. The water is steamed, sprayed on the roller brush or cleaning disc, especially the cleaning surface, to soften the stubborn stains, make them detach from the surface, and achieve the purpose of cleaning. However, the steam of surface cleaning equipment is not easy to control and often consumes a lot. The battery life of the surface cleaning device and the steam implementation process often produce additional steam leakage that the user does not want, which is unfriendly to the experience of ordinary household users.

The existing surface cleaning device, whether it is an autonomous mobile cleaning device or a hand-held cleaning device, has a limited volume of the clean water tank carried by itself due to the natural limitation of its structure and volume. When there are stains, the clean water needs to be replaced frequently, and the battery life is short, which brings about a decline in experience. Therefore, it has gradually become a trend to set the water storage tank on the base station.

However, when the water storage tank is installed at the base station, since the base station is equipped with a water inlet and a charging structure at the same time to charge and replenish water for the surface cleaning equipment, when the surface cleaning equipment is placed on the base station or removed from the base station, the charging structure may be stained with Water stains from the water inlet are prone to short circuits and fire hazards. Therefore, there is a need for a technique that can solve the above-mentioned problems.

SUMMARY OF THE INVENTION

In order to solve one of the above technical problems, the present disclosure provides a base station and a surface cleaning system.

According to one aspect of the present disclosure, there is provided a base station, comprising:

a cleaning liquid supply part, the cleaning liquid supply part is used for storing the cleaning liquid;

a charging structure, the charging structure is used to provide electric power to the surface cleaning equipment docked at the base station, and realize the charging of the surface cleaning equipment; and

a connection interface, the connection interface is connected to the cleaning liquid supply part, when the surface cleaning device is docked at the base station, the cleaning liquid storage part of the surface cleaning device is connected to the connection interface to connect the surface cleaning device The cleaning liquid of the cleaning liquid supply part is transported to the cleaning liquid storage part through the connection interface, or the cleaning liquid in the cleaning liquid storage part is transported to the cleaning liquid supply part through the connection interface;

Wherein, the level where the connection interface is located is lower than the level where the charging structure is located.

According to the base station of at least one embodiment of the present disclosure, the charging structure includes a plurality of pins, the charging connector of the surface cleaning device is a socket, and when the pins of the charging structure are inserted into the socket of the charging connector When inside, the base station provides power to the surface cleaning device, or the charging structure includes a plurality of sockets, at least part of the inner surface of the sockets is formed as an electrode, and the charging connector of the surface cleaning device is a plug The base station provides power to the surface cleaning device when the pins of the surface cleaning device are inserted into the receptacles of the charging structure.

According to the base station of at least one embodiment of the present disclosure, the charging structure includes a charging contact, and the charging connector of the surface cleaning device includes a charging contact, and when the charging contact of the charging structure is brought into contact with the charging connector of the charging connector When contacting the surface cleaning device, the base station provides electrical energy to the surface cleaning device; or, the charging structure includes a charging contact pad, and the charging connector of the surface cleaning device includes a charging contact. When the charging contact pad of the charging structure is connected The base station provides power to the surface cleaning device upon contact with the charging contacts of the charging connector.

The base station according to at least one embodiment of the present disclosure, further comprising:

A support assembly, which is arranged on the casing of the base station and used to support the connection interface.

According to the base station of at least one embodiment of the present disclosure, the support assembly includes:

a support plate fixed to the housing of the base station or formed as part of the housing of the base station; and

a support seat, the support seat extends upward from the support plate by a predetermined distance, and the middle part of the support seat is hollow, so that the part of the connection interface passes through the support seat and is connected to the second pipeline .

According to the base station of at least one embodiment of the present disclosure, the connection interface includes:

a main body part, the main body part is hollow;

a base part, the base part is arranged at the lower end of the main body part and is used to close the lower end of the main body part;

a flange portion, the flange portion is provided on the upper end of the main body portion, and at least a part of the outer edge of the flange portion is supported on the upper end of the support seat; and

a connection joint, which is arranged on the base part and located below the base part, so as to be connected to the second pipeline through the connection joint, so that the connection interface is communicated with the cleaning liquid supply part.

According to the base station of at least one embodiment of the present disclosure, the connection interface further includes:

a resisting piece, one end of the resisting piece is disposed on the base part and located above the base part, and the upper end of the resisting piece is spaced from the base part by a preset distance.

According to the base station of at least one embodiment of the present disclosure, the cross-section of the interference member is cross-shaped.

According to the base station of at least one embodiment of the present disclosure, the upper end of the flange portion is inclined upward in a direction away from the housing of the base station.

a cover plate movable between a first position and a second position, wherein when the cover plate is in the first position, the cover plate covers the connection interface, and when the cover plate is in the first position When in the second position, the connection interface is exposed.

According to the base station of at least one embodiment of the present disclosure, the charging structure is disposed on a casing of the base station above the cover plate, or disposed on the cover plate.

According to the base station of at least one embodiment of the present disclosure, when an external force is applied to the cover plate, the cover plate moves from the first position to the second position, and when the external force disappears, the cover plate moves from the second position to the first position.

According to the base station of at least one embodiment of the present disclosure, one end of the cover plate is rotatably connected to the housing of the base station, and the cover plate can swing between the first position and the second position.

According to the base station of at least one embodiment of the present disclosure, one end of the cover plate connected to the casing of the base station is located inside the casing of the base station, and the casing of the base station is provided with a through hole, and when the cover plate moves to In the first position, the lower end of the cover plate passes through the casing of the base station, is located outside the casing of the base station, and covers the connection interface; when the cover plate moves to the second position, the cover At least a portion of the board is located within the housing of the base station.

According to the base station of at least one embodiment of the present disclosure, the cover plate is slidably provided to the housing of the base station, and the cover plate is movable between the first position and the second position.

According to the base station of at least one embodiment of the present disclosure, a limiting portion is formed on the flange portion of the connection interface, and when the cover plate is in the first position, the limiting portion and the surface of the cover plate At least a part of the cover plate is in contact, so that further movement of the cover plate is restricted by the limiting portion.

According to the base station of at least one embodiment of the present disclosure, the limiting portion is formed at a portion of the flange that is remote from the housing of the base station.

According to the base station of at least one embodiment of the present disclosure, when the cover plate is located at the first position, the upper surface of the cover plate is formed as a first inclined surface, wherein the first inclined surface is away from the base station along the The direction of the housing slopes downward.

According to the base station of at least one embodiment of the present disclosure, when the cover plate is in the first position, a portion of the cover plate away from the housing of the base station is formed as a second inclined surface, wherein the second inclined surface An angle is formed between it and the horizontal plane.

According to the base station of at least one embodiment of the present disclosure, a part of the connection interface away from the casing of the base station is formed as a third inclined surface, wherein an included angle is formed between the third inclined surface and the horizontal plane.

According to the base station of at least one embodiment of the present disclosure, when the connection interface is supported by a support assembly, a portion of the support assembly away from the housing of the base station is formed as a fourth inclined surface, wherein the fourth inclined surface is connected to a horizontal plane An included angle is formed therebetween, so that the cleaning liquid flows downward along the first inclined surface, the second inclined surface, the third inclined surface and/or the fourth inclined surface.

According to the base station of at least one embodiment of the present disclosure, an upper surface of the support plate is formed as an inclined surface, wherein the upper surface of the support plate is inclined downward in a direction away from a housing of the base station to prevent cleaning liquid Build up on the upper surface of the support plate.

According to the base station of at least one embodiment of the present disclosure, the angle between the upper surface of the support plate and the horizontal plane is 10-20°.

According to the base station of at least one embodiment of the present disclosure, the front surface of the support plate is formed as an inclined surface, wherein the front surface of the support plate is inclined downward in a direction approaching the housing of the base station, so that the cleaning liquid Drop directly into the tray from the upper surface of the support plate.

According to the base station of at least one embodiment of the present disclosure, the angle between the front surface of the support plate and the vertical plane is 10-20°

According to the base station of at least one embodiment of the present disclosure, a water collecting tank is provided near the lower edge of the front surface of the support plate.

According to another aspect of the present disclosure, there is provided a surface cleaning system including the above-mentioned base station.

A surface cleaning system according to at least one embodiment of the present disclosure, further comprising:

A surface cleaning device, the surface cleaning device comprising a cleaning liquid storage part, so as to realize the connection between the cleaning liquid storage part and the cleaning liquid supply part when the cleaning liquid storage part and the cleaning liquid supply part are communicated through a connection interface fluid interaction.

According to the surface cleaning system of at least one embodiment of the present disclosure, the surface cleaning apparatus further includes:

and a charging connector, the charging connector cooperates with the charging structure, so that the base station provides power to the surface cleaning device.

A joint assembly is connected to the cleaning liquid storage part so that when the joint assembly is inserted into the connection interface, there is communication between the cleaning liquid storage part and the cleaning liquid supply part.

According to a surface cleaning system of at least one embodiment of the present disclosure, the joint assembly includes:

a lower casing, the lower casing is formed with a pipeline for the passage of the cleaning liquid;

an upper casing, the upper casing is connected to the lower casing, and the upper casing is formed with a pipeline for the passage of cleaning liquid; and

a valve assembly, the valve assembly is disposed in the lower casing and can move in the direction of the pipeline of the lower casing, so that when the valve assembly is in the first position, the valve assembly closes the lower casing When the valve assembly is in the second position, the valve assembly opens the pipeline of the lower casing for the passage of the cleaning liquid.

According to the surface cleaning system of at least one embodiment of the present disclosure, the lower housing includes:

The insertion part, when the connector assembly is connected to the connection interface, at least part of the insertion part is inserted into the connection interface.

According to the surface cleaning system of at least one embodiment of the present disclosure, the lower housing further includes:

a lower connection part, the lower connection part is connected to the insertion part, and a mounting part for fixing the lower connection part is formed on the lower connection part.

According to the surface cleaning system of at least one embodiment of the present disclosure, a protrusion extending toward the interior of the lower case is formed on the inner wall of the lower case, wherein the protrusion is formed with a through hole; the valve The assembly slides along the inner wall of the through hole.

According to a surface cleaning system of at least one embodiment of the present disclosure, the valve assembly includes:

a guide rod, the guide rod is slidably disposed on the protruding part, and both ends of the guide rod are located on both sides of the protruding part; and

a plug, the plug is arranged at one end of the guide rod close to the upper casing, and when the valve assembly is in the first position, the plug is in sealing contact with the inner wall surface of the lower casing to seal The pipeline of the lower casing for the passage of cleaning liquid; when the valve assembly is in the second position, the plug is spaced from the inner wall surface of the lower casing at a certain distance, so as to open the lower casing used to clean the lines through which the liquid passes.

According to the surface cleaning system of at least one embodiment of the present disclosure, the inner diameter of the lower connection part is larger than the inner diameter of the insertion part, and the diameter of at least part of the plug is larger than the inner diameter of the insertion part, so that when the outer diameter of the plug is larger than the inner diameter of the insertion part When the wall surface is in contact with the inner wall surface of the insertion part, the pipeline for the cleaning liquid to pass through the lower casing is closed; when the outer wall surface of the plug is separated from the inner wall surface of the insertion part, the pipeline is opened. The pipes of the lower casing for the passage of cleaning liquids.

According to the surface cleaning system of at least one embodiment of the present disclosure, an end of the guide rod away from the upper casing is formed with a shaft shoulder, one end of the spring is disposed on the shaft shoulder, and the other end is disposed on the protruding portion, and the The spring is in a pre-compressed state, so that the joint assembly is in a normally closed state by the elastic force of the spring.

According to the surface cleaning system of at least one embodiment of the present disclosure, the plug is formed in an inverted cone shape.

According to the surface cleaning system of at least one embodiment of the present disclosure, the upper housing includes:

an upper connecting portion connected to the lower connecting portion; and

an upper connecting pipe, one end of the upper connecting pipe is disposed on the upper connecting part, so that the cleaning liquid storage part is connected to the cleaning liquid supply part by connecting the upper connecting pipe to the cleaning liquid storage part.

Description of drawings

The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure, are included to provide a further understanding of the disclosure, and are incorporated in and constitute the present specification part of the manual.

FIG. 1 is one of schematic structural diagrams of a base station according to an embodiment of the present disclosure.

FIG. 2 is a second schematic structural diagram of a base station according to an embodiment of the present disclosure.

FIG. 3 is a third schematic structural diagram of a base station according to an embodiment of the present disclosure.

FIG. 4 is a fourth schematic structural diagram of a base station according to an embodiment of the present disclosure.

FIG. 5 is a fifth schematic structural diagram of a base station according to an embodiment of the present disclosure.

FIG. 6 is a sixth schematic structural diagram of a base station according to an embodiment of the present disclosure.

FIG. 7 is a schematic structural diagram of a support assembly according to an embodiment of the present disclosure.

FIG. 8 is a schematic structural diagram of a connection interface according to an embodiment of the present disclosure.

FIG. 9 is another perspective structural diagram of a connection interface according to an embodiment of the present disclosure.

10 is a schematic structural diagram of a cover plate according to an embodiment of the present disclosure.

11 is a schematic structural diagram of a lower end cap and a valve assembly according to an embodiment of the present disclosure.

12 is a schematic structural diagram of a surface cleaning system according to an embodiment of the present disclosure.

13 is a schematic structural diagram of a surface cleaning apparatus according to an embodiment of the present disclosure.

14 and 15 are schematic structural diagrams of a joint assembly according to an embodiment of the present disclosure.

FIG. 16 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.

Detailed ways

The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related content, but not to limit the present disclosure. In addition, it should be noted that, for the convenience of description, only the parts related to the present disclosure are shown in the drawings.

It should be noted that the embodiments of the present disclosure and the features of the embodiments may be combined with each other unless there is conflict. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Unless otherwise stated, the illustrated exemplary embodiments/embodiments are to be understood as exemplary features providing various details of some ways in which the technical concept of the present disclosure may be implemented in practice. Therefore, unless otherwise stated, the features of various embodiments/embodiments may be additionally combined, separated, interchanged and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or hatching in the drawings is generally used to clarify boundaries between adjacent components. As such, unless stated, the presence or absence of cross-hatching or shading does not convey or represent any particular material, material properties, dimensions, proportions, commonalities between the illustrated components and/or any other characteristics of the components, any preferences or requirements for attributes, properties, etc. Furthermore, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. When example embodiments may be implemented differently, the specific process sequence may be performed in a different order than described. For example, two consecutively described processes may be performed substantially concurrently or in the reverse order of that described. In addition, the same reference numerals denote the same components.

When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, directly connected to, or directly on the other element Incorporated into another component, or intermediate components may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. To this end, the term "connected" may refer to a physical connection, electrical connection, etc., with or without intervening components.

For descriptive purposes, the present disclosure may use terms such as "under", "under", "under", "under", "above", "on", "at" Spatially relative terms such as "above," "higher," and "side (eg, as in "sidewall")" to describe one element to another (other) element as shown in the figures Relationship. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "under" can encompass both an orientation of "above" and "below." In addition, the device may be otherwise oriented (eg, rotated 90 degrees or at other orientations) and, as such, the spatially relative descriptors used herein should be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a" and "(the)" are intended to include the plural forms as well, unless the context clearly dictates otherwise. Furthermore, when the terms "comprising" and/or "comprising" and their variants are used in this specification, it is indicated that the stated features, integers, steps, operations, parts, components and/or groups thereof are present, but not excluded One or more other features, integers, steps, operations, parts, components and/or groups thereof are present or additional. Note also that, as used herein, the terms "substantially," "approximately," and other similar terms are used as terms of approximation and not as terms of degree, as they are used to explain what one of ordinary skill in the art would recognize Inherent deviations from measured, calculated and/or provided values.

FIG. 1 is one of schematic structural diagrams of a base station according to an embodiment of the present disclosure. FIG. 2 is a second schematic structural diagram of a base station according to an embodiment of the present disclosure. FIG. 3 is a third schematic structural diagram of a base station according to an embodiment of the present disclosure. FIG. 4 is a fourth schematic structural diagram of a base station according to an embodiment of the present disclosure. FIG. 5 is a fifth schematic structural diagram of a base station according to an embodiment of the present disclosure. FIG. 6 is a sixth schematic structural diagram of a base station according to an embodiment of the present disclosure.

As shown in FIG. 1 to FIG. 6, the present disclosure provides a base station 100, which includes:

the cleaning liquid supply part 151, the cleaning liquid supply part 151 is used for storing the cleaning liquid;

a charging structure 160, the charging structure 160 is used to provide electric power to the surface cleaning device 200 docked at the base station 100, and realize the charging of the surface cleaning device 200; and

The connection interface 170 is connected to the cleaning liquid supply part 151. When the surface cleaning device 200 is docked on the base station 100, the cleaning liquid storage part of the surface cleaning device 200 is connected to the connection interface 170 to clean the cleaning liquid supply part 151. The liquid is delivered to the cleaning liquid storage part through the connection interface 170, or the cleaning liquid in the cleaning liquid storage part is delivered to the cleaning liquid supply part 151 through the connection interface 170;

The level where the connection interface 170 is located is lower than the level where the charging structure 160 is located.

The base station 100 of the present disclosure separates the charging structure 160 and the connection interface 170 in height, which effectively prevents the surface cleaning device 200 from being charged when the base station 100 is placed on the base station 100 to replenish cleaning liquid and/or charge, or when the surface cleaning device 200 is removed from the base station. The structure may get wet with cleaning liquid from the connection interface 170, or the cleaning liquid may splash on the charging structure, resulting in problems of short circuit and fire hazard.

As an implementation form, the charging structure 160 includes a plurality of pins, and the charging connector of the surface cleaning device 200 is a jack. When the pins of the charging structure 160 are inserted into the jacks of the charging connector, the base station 100 sends the surface cleaning device 200 Electrical energy is supplied, and at this time, at least part of the inner surface of the socket is formed as an electrode.

As a second implementation form, the charging structure 160 includes a plurality of sockets, at least part of the inner surfaces of the sockets are formed as electrodes, and the charging connectors of the surface cleaning device 200 are pins. When the pins of the surface cleaning device 200 are inserted into the charging The base station 100 provides power to the surface cleaning device 200 while in the receptacle of the structure 160 .

As a third implementation form, the charging structure 160 includes charging contacts, and the charging connector of the surface cleaning device 200 includes charging contacts. When the charging contacts of the charging structure 160 are brought into contact with the charging contacts of the charging connector, the base station 100 cleans the surface. Device 200 provides electrical power.

As a fourth implementation form, the charging structure 160 includes a charging contact, and the charging connector of the surface cleaning device 200 includes a charging contact. When the charging contact of the charging structure 160 contacts the charging contact of the charging connector, the base station 100 cleans the surface Device 200 provides electrical power.

Preferably, the charging structure 160 is provided on the housing 165 of the base station 100 , and more preferably, the charging structure 160 is provided on a vertical portion of the housing 165 of the base station 100 .

Preferably, the charging structure 160 is disposed on the casing of the base station above the cover plate 190 , or is disposed on the cover plate 190 .

In an optional embodiment of the present disclosure, the base station 100 further includes:

The support assembly 180 is disposed on the housing 165 of the base station 100 for supporting the connection interface 170 .

Preferably, the support assembly 180 includes:

a support plate 181 that is fixed to the housing 165 of the base station 100 or formed as part of the housing 165 of the base station 100; and

The support base 182 extends upwards from the support plate 181 by a predetermined distance, and the middle of the support base 182 is hollow, so that part of the connection interface 170 passes through the support base 182 and is connected to the second pipeline 1072 .

Preferably, as shown in FIG. 6 and FIG. 16 , in order to prevent the support assembly 180 from accumulating water, the upper surface 180 a of the support assembly 180 is formed with an inclination toward the tray part 102 to guide the residual liquid on the tray part 102 .

In an optional embodiment, an inclination is formed on the front surface 180b of the support assembly 180 connected to the upper surface 180a, and the inclination is formed from the lower edge of the front surface 180b to the upper edge of the front surface 180b, so that the front surface 180b is formed on the front surface 180b. 180b tends to be inclined toward the tray portion 102.

That is, the front surface of the support plate 181 is formed as an inclined surface, wherein the front surface of the support plate 181 is inclined downward in a direction approaching the housing of the base station so that the cleaning liquid directly falls from the upper surface of the support plate into the tray part.

Preferably, the included angle between the front surface of the support plate and the vertical plane is 10-20°.

In an optional embodiment, in order to further prevent water from flowing downward from the front surface 180b into the gap between the detachable tray part and the base, a water collecting groove 180c is provided at a position adjacent to the lower edge of the front surface 180b to receive water along the front surface 180b Some residual water that flows down.

In an optional embodiment of the present disclosure, the connection interface 170 includes:

The main body part 171, the main body part 171 is hollow;

the base part 172, the base part 172 is arranged at the lower end of the main body part 171, and is used for closing the lower end of the main body part 171;

a flange portion 173, the flange portion 173 is disposed on the upper end of the main body portion 171, and at least a portion of the outer edge of the flange portion 173 is supported on the upper end of the support seat 182; and

The connection joint 174 is disposed on the base portion 172 and located below the base portion 172 to be connected to the second pipeline 1072 through the connection joint 174 , so that the connection interface 170 communicates with the cleaning liquid supply portion 151 .

Preferably, the connection interface 170 further includes:

The interference piece 175, one end of the interference piece 175 is disposed on the base portion 172, and is located above the base portion 172, and the upper end of the interference piece 175 is spaced from the base portion 172 by a predetermined distance; more preferably, the cross-section of the interference piece 175 is cross-shaped .

According to at least one embodiment of the present disclosure, the upper end of the flange portion 173 is inclined upward along the direction away from the housing 165 of the base station 100 ;

The cover plate 190 is movable between a first position and a second position, wherein when the cover plate 190 is in the first position, the cover plate 190 covers the connection interface 170, and when the cover plate 190 is in the second position, The connection interface 170 is exposed.

Preferably, when an external force is applied to the cover plate 190, the cover plate 190 moves from the first position to the second position, and when the external force disappears, the cover plate 190 moves from the second position to the first position, wherein when the cover plate 190 When moving from the second position to the first position, the gravity of the cover plate 190 can be used, or the restoring force provided by the spring can be used.

Preferably, one end of the cover plate 190 is rotatably connected to the housing 165 of the base station 100, and the cover plate 190 can swing between the first position and the second position.

One end of the cover plate 190 connected to the casing 165 of the base station 100 is located inside the casing 165 of the base station 100. The casing 165 of the base station 100 is provided with a through hole. When the cover plate 190 moves to the first position, the lower end of the cover plate 190 passes through the base station. The casing 165 of the base station 100 is located outside the casing 165 of the base station 100 and covers the connection interface 170 ; when the cover plate 190 moves to the second position, at least part of the cover plate 190 is located in the casing 165 of the base station 100 .

As another implementation form, the cover plate 190 is slidably disposed on the housing of the base station 100, and the cover plate 190 can move between the first position and the second position.

FIG. 8 is a schematic structural diagram of a connection interface according to an embodiment of the present disclosure. FIG. 9 is another perspective structural diagram of a connection interface according to an embodiment of the present disclosure.

As shown in FIGS. 8 and 9 , a limiting portion 1731 is formed on the flange portion 173 of the connection interface 170 . When the cover plate 190 is in the first position, the limiting portion 1731 is in contact with at least a part of the surface of the cover plate 190 to Further movement of the cover plate 190 is restricted by the limiting portion 1731 .

In the present disclosure, the limiting portion 1731 is formed at a portion of the flange that is far away from the housing 165 of the base station 100 .

In an optional embodiment of the present disclosure, as shown in FIG. 10 , when the cover plate 190 is in the first position, the upper surface of the cover plate 190 is formed as a first inclined surface 1901 , wherein the first inclined surface 1901 extends away from the base station along the The housing 165 of 100 is oriented downwardly.

When the cover plate 190 is in the first position, the part of the cover plate 190 away from the housing 165 of the base station 100 is formed as a second inclined surface 1902 , wherein an included angle is formed between the second inclined surface 1902 and the horizontal plane.

In the present disclosure, the included angle between the second inclined surface 1902 and the horizontal plane may be 90°, that is, the second inclined surface 1902 may be disposed vertically.

More preferably, the part of the connection interface 170 away from the housing 165 of the base station 100 is formed as a third inclined surface 176 , wherein an included angle is formed between the third inclined surface 176 and the horizontal plane.

Similarly, the included angle formed between the third inclined surface 176 and the horizontal plane may also be 90°, that is, the third inclined surface 176 may be arranged vertically.

More preferably, when the connection interface 170 is supported by the support assembly 180, the part of the support assembly 180 away from the housing 165 of the base station 100 is formed as a fourth inclined surface 183, wherein an included angle is formed between the fourth inclined surface 183 and the horizontal surface, so that the The cleaning liquid flows downward along the first inclined surface, the second inclined surface, the third inclined surface and/or the fourth inclined surface.

Therefore, the first inclined surface is formed with the first water guiding surface, and the second inclined surface, the third inclined surface and/or the fourth inclined surface together form the second water guiding surface, so as to disperse water droplets through the first water guiding surface and the second water guiding surface Quickly guide away from the position of the charging structure.

In the present disclosure, preferably, as shown in FIG. 7 , the upper surface of the support plate 181 is formed as an inclined surface, wherein the upper surface of the support plate 181 is inclined downward in a direction away from the housing of the base station 100 to prevent the cleaning liquid from Accumulation on the upper surface of the support plate 181 , especially the accumulation of water, may lead to evaporation of water vapor in some special cases, so there is also a risk of short circuit. More preferably, the angle between the upper surface of the support plate 181 and the horizontal plane is 10-20°.

Preferably, the base station of the present disclosure may further include: a base 101, the base 101 may be a cavity structure, a tray portion 102 may be provided on the base 101, and two main rolling wheel positioning seats 1021 may be provided on the tray portion 102 , and two auxiliary rolling wheel positioning seats 1022, those skilled in the art can adjust the number and structure of the main rolling wheel positioning seats 1021 based on the specific rolling wheel form of the surface cleaning equipment, and adjust the number and structure of the auxiliary rolling wheel positioning seats 1022. The structure is adjusted, and for the surface cleaning equipment without the auxiliary scroll wheel, the base station 100 can adaptively only have the main scroll wheel positioning seat 1021 .

The tray part 102 of the base station 100 is also preferably formed with a cleaning groove 1023. The shape of the cleaning groove 1023 can be adapted to the shape of the roller brush of the surface cleaning device. When the surface cleaning device is docked to the base station 100, the roller of the surface cleaning device A brush can be placed in the cleaning tank 1023.

Preferably, the tray part 102 is detachably connected with the base 101 .

According to the preferred embodiment of the present disclosure, the base 101 of the base station 100 is a cavity structure, and an air supply device is arranged in the cavity structure of the base 101 (the air supply device may have a heating component to provide hot air), and the base 101 is formed with an air supply device. The base air outlet 1011 and the base air intake portion 1012, correspondingly, the tray portion 102 is provided with a tray air outlet 1024 at the corresponding position of the base air outlet 1011, so that the airflow output by the air supply device can pass through the base air outlet 1011. and the tray air outlet 1024 are applied to the roller brush and other components of the surface cleaning device placed in the cleaning tank 1023 to dry the roller brush and other components.

The base air intake portion 1012 can be disposed at a suitable position of the base 101, and the number thereof can be one or more than two. The susceptor air intake 1012 may be in porous form.

The base 101 may have a substantially square shape or other suitable shapes.

In the present disclosure, the base station 100 has a housing 165, the housing 165 is fixedly connected with one end of the base 101, and the housing 165 has an extended dimension along the vertical direction.

The base station 100 may further be provided with a storage box 103 , and both the storage box 103 and the cleaning liquid supply part 151 are supported and held by the housing 165 , and the storage box 103 may have an openable box door.

Preferably, the storage box 103 and the cleaning liquid supply part 151 are both cylindrical structures, and those skilled in the art can also adjust the shapes of the storage box 103 and the cleaning liquid supply part 151 .

A liquid addition part 1511 may be provided on the top of the cleaning liquid supply part 151 , and the liquid addition part 1511 may be in the form of a liquid addition cap and a liquid addition port.

The cleaning liquid supply part 151 may also be provided with a handle part 1512 , and the cleaning liquid supply part 151 and the housing 165 are detachably connected.

Preferably, as shown in FIG. 1 to FIG. 6 and FIG. 11 , the base station 100 further has a two-way pump device, a first pipeline 1071, a second pipeline 1072 and a heating device 106, and the two-way pump device is connected between the valve assembly 153 and the first pipeline. Between the first ends of a pipeline 1071 , the second end of the first pipeline 1071 is connected to the heating device 106 , and the heating device 106 is connected to the second end of the first pipeline 1071 and the first end of the second pipeline 1072 In between, the second end of the second pipeline 1072 is connected to the above-mentioned connection interface, so that the liquid in the cleaning liquid supply part 151 passes through the valve assembly 153, the two-way pump device, the first pipeline 1071, the heating device 106, and the second pipeline in sequence. Road 1072, the connection interface is supplied to the surface cleaning device.

Preferably, the cleaning liquid supply part 151 is provided on the housing 165 through the lower end cover 152 , and the valve assembly 153 is provided in the lower end cover 152 . The cleaning liquid supply part 151 can be removed from the lower end cap 152 .

According to another aspect of the present disclosure, as shown in FIG. 12 , a surface cleaning system is provided, which includes the base station 100 described above.

In the present disclosure, the surface cleaning system also includes:

The surface cleaning apparatus 200 includes a cleaning liquid storage portion to achieve fluid interaction between the cleaning liquid storage portion and the cleaning liquid supply portion 151 when the cleaning liquid storage portion and the cleaning liquid supply portion 151 are communicated through the connection interface 170 .

Preferably, the surface cleaning apparatus 200 further includes:

A charging connector (not shown in the figure), the charging connector cooperates with the charging structure 160 so that the base station 100 provides power to the surface cleaning device 200 .

13 is a schematic structural diagram of a surface cleaning apparatus according to an embodiment of the present disclosure. 14 and 15 are schematic structural diagrams of a joint assembly according to an embodiment of the present disclosure.

In an optional embodiment of the present disclosure, as shown in FIGS. 13 to 15 , the surface cleaning apparatus 200 further includes:

The joint assembly 210 is connected to the cleaning liquid storage part so that when the joint assembly 210 is inserted into the connection interface 170 , there is communication between the cleaning liquid storage part and the cleaning liquid supply part 151 .

Preferably, joint assembly 210 includes:

The lower casing 2101, the lower casing 2101 is formed with a pipeline for the passage of the cleaning liquid;

an upper case 2102, the upper case 2102 is connected to the lower case 2101, and the upper case 2102 is formed with a pipeline for the passage of cleaning liquid; and

The valve assembly 2103, the valve assembly 2103 is arranged in the lower casing 2101, and can move along the direction of the pipeline of the lower casing 2101, so that when the valve assembly 2103 is in the first position, the valve assembly 2103 closes the function of the lower casing 2101. For the pipeline through which the cleaning liquid passes, when the valve assembly 2103 is in the second position, the valve assembly 2103 opens the pipeline for the cleaning liquid to pass through the lower housing 2101 .

In the present disclosure, the lower case 2101 includes:

For the insertion portion 21011 , when the connector assembly 210 is connected to the connection interface 170 , at least part of the insertion portion 21011 is inserted into the connection interface 170 .

Moreover, the lower casing 2101 also includes:

The lower connecting portion 21012 is connected to the inserting portion 21011, and a mounting portion for fixing the lower connecting portion 21012 is formed on the lower connecting portion 21012.

In the present disclosure, a protruding portion 21013 extending inside the lower housing 2101 is formed on the inner wall of the lower housing 2101 , wherein the protruding portion 21013 is formed with a through hole; the valve assembly 2103 slides along the inner wall surface of the through hole.

In this disclosure, valve assembly 2103 includes:

a guide rod 21031, the guide rod 21031 is slidably disposed on the protruding part 21013, and both ends of the guide rod 21031 are located on both sides of the protruding part 21013; and

The plug 21032 is arranged at one end of the guide rod 21031 close to the upper casing 2102, and when the valve assembly 2103 is in the first position, the plug 21032 is in sealing contact with the inner wall surface of the lower casing 2101 to close the lower casing 2101 for the passage of the cleaning liquid; when the valve assembly 2103 is in the second position, the plug 21032 is spaced a certain distance from the inner wall surface of the lower casing 2101 to open the passage of the lower casing 2101 for the passage of the cleaning liquid road.

In the present disclosure, the inner diameter of the lower connecting part 21012 is larger than the inner diameter of the insertion part 21011, and at least part of the plug 21032 has a diameter larger than the inner diameter of the insertion part 21011, so that when the outer wall surface of the plug 21032 contacts with the inner wall surface of the insertion part 21011, it closes the The pipeline of the lower casing 2101 for the passage of the cleaning liquid; when the outer wall surface of the plug 21032 is separated from the inner wall of the insertion portion 21011, the pipeline for the passage of the cleaning liquid of the lower casing 2101 is opened.

Preferably, one end of the guide rod 21031 away from the upper casing 2102 is formed with a shaft shoulder, one end of the spring 2104 is arranged on the shaft shoulder, and the other end is arranged on the protruding part 21013 , and the spring 2104 is in a pre-compressed state to pass the elastic force of the spring 2104 The joint assembly 210 is made to be in a normally closed state.

In the present disclosure, the plug 21032 is formed in an inverted tapered shape.

In the present disclosure, the joint assembly 210 further includes a sealing member 2105, which is disposed on the outside of the insertion portion 21011 of the lower housing, so as to form a seal between the joint assembly 210 and the connection interface.

In an optional embodiment of the present disclosure, the upper housing 2102 includes:

an upper connecting portion 21021, the upper connecting portion 21021 is connected to the lower connecting portion 21012; and

The upper connecting pipe 21022, one end of the upper connecting pipe 21022 is disposed on the upper connecting part 21021, so that the cleaning liquid storage part is connected to the cleaning liquid supply part 151 by connecting the upper connecting pipe 21022 to the cleaning liquid storage part.

As shown in FIG. 16 , the difference between the base station and the above-mentioned embodiment is that the charging structure 160 is disposed on the cover plate 190 to provide electric power to the surface cleaning device through the charging structure 160 .

Preferably, the first inclined surface 1901 and the second inclined surface 1902 of the cover plate 190 are formed as continuous arc surfaces, and the charging structure 160 protrudes from the continuous arc surfaces.

Of course, the charging structure 160 may protrude from the first inclined surface 1901 or protrude from the second inclined surface 1902 .

In the description of this specification, references to the terms "one embodiment/mode", "some embodiments/modes", "example", "specific example", or "some examples", etc. are intended to be combined with the description of the embodiment/mode A particular feature, structure, material, or characteristic described by way of example or example is included in at least one embodiment/mode or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment/mode or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments/means or examples. Furthermore, those skilled in the art may combine and combine the different embodiments/modes or examples described in this specification and the features of the different embodiments/modes or examples without conflicting each other.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

It should be understood by those skilled in the art that the above embodiments are only for clearly illustrating the present disclosure, but not for limiting the scope of the present disclosure. For those skilled in the art, other changes or modifications may also be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

A base station, characterized in that it includes:

a cleaning liquid supply part, the cleaning liquid supply part is used for storing the cleaning liquid;

a charging structure, the charging structure is used to provide electric power to the surface cleaning equipment docked at the base station, and realize the charging of the surface cleaning equipment; and

a connection interface, the connection interface is connected to the cleaning liquid supply part, when the surface cleaning device is docked at the base station, the cleaning liquid storage part of the surface cleaning device is connected to the connection interface to connect the surface cleaning device The cleaning liquid of the cleaning liquid supply part is transported to the cleaning liquid storage part through the connection interface, or the cleaning liquid in the cleaning liquid storage part is transported to the cleaning liquid supply part through the connection interface;

Wherein, the level where the connection interface is located is lower than the level where the charging structure is located.
The base station according to claim 1, wherein the charging structure includes a plurality of pins, the charging connector of the surface cleaning device is a jack, and when the pins of the charging structure are inserted into the charging connector When inside the jack, the base station provides power to the surface cleaning device; or, the charging structure includes a plurality of jacks, at least part of the inner surface of the jacks is formed as an electrode, and the charging connector of the surface cleaning device For the pins, the base station provides power to the surface cleaning device when the pins of the surface cleaning device are inserted into the receptacles of the charging structure.
The base station of claim 1, wherein the charging structure includes a charging contact, and the charging connector of the surface cleaning device includes a charging contact piece, and when the charging contact of the charging structure is brought into contact with the charging connector When the charging contacts are connected, the base station provides electrical energy to the surface cleaning device; or, the charging structure includes a charging contact, and the charging connector of the surface cleaning device includes a charging contact, when the charging structure is charged The base station provides electrical power to the surface cleaning device when the contacts contact the charging contacts of the charging connector.
The base station of claim 1, further comprising:

A support assembly, which is arranged on the casing of the base station and used to support the connection interface.
The base station of claim 4, wherein the support assembly comprises:

a support plate fixed to the housing of the base station or formed as part of the housing of the base station; and

a support seat, the support seat extends upward from the support plate by a predetermined distance, and the middle part of the support seat is hollow, so that the part of the connection interface passes through the support seat and is connected to the second pipeline .
The base station of claim 5, wherein the connection interface comprises:

a main body part, the main body part is hollow;

a base part, the base part is arranged at the lower end of the main body part and is used to close the lower end of the main body part;

a flange portion, the flange portion is provided on the upper end of the main body portion, and at least a part of the outer edge of the flange portion is supported on the upper end of the support seat; and

a connection joint, which is arranged on the base part and located below the base part, so as to be connected to the second pipeline through the connection joint, so that the connection interface is communicated with the cleaning liquid supply part.
The base station of claim 6, wherein the connection interface further comprises:

a resisting piece, one end of the resisting piece is disposed on the base part and located above the base part, and the upper end of the resisting piece is spaced from the base part by a preset distance.
The base station according to claim 7, wherein the cross section of the interference member is cross-shaped.
6. The base station of claim 6, wherein an upper end of the flange portion is inclined upward in a direction away from the housing of the base station.
The base station of claim 1, further comprising:

a cover plate movable between a first position and a second position, wherein when the cover plate is in the first position, the cover plate covers the connection interface, and when the cover plate is in the first position When in the second position, the connection interface is exposed.
The base station according to claim 10, wherein the charging structure is arranged on a casing of the base station above the cover plate, or is arranged on the cover plate.
The base station of claim 11, wherein when an external force is applied to the cover plate, the cover plate moves from the first position to the second position, and when the external force disappears, the cover plate moves from the second position The position moves to the first position.
The base station of claim 11, wherein one end of the cover plate is rotatably connected to the housing of the base station, and the cover plate can swing between the first position and the second position.
The base station according to claim 13, wherein one end of the cover plate connected to the casing of the base station is located inside the casing of the base station, and the casing of the base station is provided with a through hole, when the cover plate is When moving to the first position, the lower end of the cover plate passes through the casing of the base station, is located outside the casing of the base station, and covers the connection interface; when the cover plate moves to the second position, the cover plate is moved to the second position. At least part of the cover plate is located in the housing of the base station.
The base station of claim 11, wherein the cover plate is slidably disposed on the housing of the base station, and the cover plate is movable between the first position and the second position.
The base station according to claim 13 or 15, wherein a limiting portion is formed on the flange portion of the connection interface, and when the cover plate is located at the first position, the limiting portion and the At least a portion of the surface of the cover plate is in contact to limit further movement of the cover plate by the stopper.
The base station according to claim 16, wherein the limiting portion is formed at a part of the flange away from the casing of the base station.
The base station of claim 11, wherein when the cover plate is in the first position, the upper surface of the cover plate is formed as a first inclined surface, wherein the first inclined surface The direction of the casing of the base station is inclined downward.
The base station according to claim 18, wherein when the cover plate is located at the first position, a part of the cover plate away from the casing of the base station is formed as a second inclined surface, wherein the second inclined surface is formed. An included angle is formed between the inclined plane and the horizontal plane.
The base station of claim 19, wherein a part of the connection interface away from the casing of the base station is formed as a third inclined surface, wherein an included angle is formed between the third inclined surface and the horizontal plane.
The base station of claim 20, wherein when the connection interface is supported by a support assembly, a part of the support assembly away from the housing of the base station is formed as a fourth inclined surface, wherein the fourth inclined surface An included angle is formed with the horizontal surface, so that the cleaning liquid flows downward along the first inclined surface, the second inclined surface, the third inclined surface and/or the fourth inclined surface.
6. The base station of claim 5, wherein the upper surface of the support plate is formed as an inclined surface, wherein the upper surface of the support plate is inclined downward in a direction away from the housing of the base station to prevent Cleaning liquid builds up on the upper surface of the support plate.
The base station according to claim 22, wherein the angle between the upper surface of the support plate and the horizontal plane is 10-20°.
6. The base station of claim 5, wherein the front surface of the support plate is formed as an inclined surface, wherein the front surface of the support plate is inclined downward in a direction approaching the housing of the base station such that The cleaning liquid falls directly into the tray from the upper surface of the support plate.
The base station according to claim 24, wherein the angle between the front surface of the support plate and the vertical plane is 10-20°.
The base station according to claim 24, characterized in that a water collecting groove is provided at a position adjacent to the lower edge of the front surface of the support plate.
A surface cleaning system, characterized by comprising the base station according to any one of claims 1 to 26.
The surface cleaning system of claim 27, further comprising:

A surface cleaning device comprising a cleaning liquid storage part, so as to realize the connection between the cleaning liquid storage part and the cleaning liquid supply part when the cleaning liquid storage part and the cleaning liquid supply part are communicated through a connection interface fluid interaction.
The surface cleaning system of claim 28, wherein the surface cleaning apparatus further comprises:

and a charging connector, the charging connector cooperates with the charging structure, so that the base station provides power to the surface cleaning device.
The surface cleaning system of claim 28, wherein the surface cleaning apparatus further comprises:

A joint assembly is connected to the cleaning liquid storage part so that when the joint assembly is inserted into the connection interface, there is communication between the cleaning liquid storage part and the cleaning liquid supply part.
31. The surface cleaning system of claim 30, wherein the joint assembly comprises:

a lower casing, the lower casing is formed with a pipeline for the passage of the cleaning liquid;

an upper casing, the upper casing is connected to the lower casing, and the upper casing is formed with a pipeline for the passage of cleaning liquid; and

a valve assembly, the valve assembly is disposed in the lower casing and can move in the direction of the pipeline of the lower casing, so that when the valve assembly is in the first position, the valve assembly closes the lower casing When the valve assembly is in the second position, the valve assembly opens the pipeline of the lower casing for the passage of the cleaning liquid.
The surface cleaning system of claim 31, wherein the lower housing comprises:

The insertion part, when the connector assembly is connected to the connection interface, at least part of the insertion part is inserted into the connection interface.
The surface cleaning system of claim 32, wherein the lower housing further comprises:

a lower connection part, the lower connection part is connected to the insertion part, and a mounting part for fixing the lower connection part is formed on the lower connection part.
The surface cleaning system of claim 33, wherein a protruding portion extending toward the interior of the lower housing is formed on the inner wall of the lower housing, wherein the protruding portion is formed with a through hole; and The valve assembly slides along the inner wall surface of the through hole.
The surface cleaning system of claim 34, wherein the valve assembly comprises:

a guide rod, the guide rod is slidably disposed on the protruding part, and both ends of the guide rod are located on both sides of the protruding part; and

a plug, the plug is arranged at one end of the guide rod close to the upper casing, and when the valve assembly is in the first position, the plug is in sealing contact with the inner wall surface of the lower casing to seal The pipeline of the lower casing for the passage of cleaning liquid; when the valve assembly is in the second position, the plug is spaced from the inner wall surface of the lower casing at a certain distance, so as to open the lower casing for cleaning the lines through which the liquid passes.
36. The surface cleaning system according to claim 35, wherein the inner diameter of the lower connecting portion is larger than the inner diameter of the insertion portion, and the diameter of at least part of the plug is larger than the inner diameter of the insertion portion, so that when the plug is used When the outer wall surface of the plug is in contact with the inner wall surface of the insertion part, the pipeline for the cleaning liquid to pass through the lower casing is closed; when the outer wall surface of the plug is separated from the inner wall surface of the insertion part, it is opened. The pipeline of the lower casing is used for the passage of cleaning liquid.
The surface cleaning system according to claim 36, wherein a shaft shoulder is formed at one end of the guide rod away from the upper casing, one end of the spring is arranged on the shaft shoulder, and the other end is arranged on the protruding portion, And the spring is in a pre-compressed state, so that the joint assembly is normally closed by the elastic force of the spring.
38. The surface cleaning system of claim 37, wherein the plug is formed as an inverted cone.
38. The surface cleaning system of claim 37, wherein the upper housing comprises:

an upper connecting portion connected to the lower connecting portion; and

an upper connecting pipe, one end of the upper connecting pipe is disposed on the upper connecting part, so that the cleaning liquid storage part is connected to the cleaning liquid supply part by connecting the upper connecting pipe to the cleaning liquid storage part.