AU2022227479A1 - Cleaner - Google Patents

Abstract

The present invention relates to a wet mop module for a cleaner, the wet mop module comprising a water supply nozzle for discharging water in a water tank to a mop, wherein the water supply nozzle comprises a nozzle body having a water outlet formed at one end thereof so as to discharge water to the mop, and the water outlet is formed to be inclined so that generation of waterdrops blocking the outlet can be prevented and clogging of the outlet due to foreign substances contained in the waterdrops can be prevented when the waterdrops are dried.

Description

[DESCRIPTION]

[Title]

CLEANER

[Technical Field]

The present disclosure relates to a cleaner, and more particularly, to a cleaner

including a cleaning module detachably provided, the cleaning module being configured

to suck dust or debris from a target cleaning region and wipe the target cleaning region

by discharging water or steam to a mop.

[Background Art]

A cleaner refers to a device that cleans a target cleaning region by sucking dust

or debris or wiping the target cleaning region.

The cleaners may be classified into a manual cleaner which is moved directly by

a user to perform a cleaning operation, and an automatic cleaner which performs a

cleaning operation while autonomously traveling.

Further, depending on the shape of the cleaner, the manual cleaners may be

classified into a canister cleaner, an upright cleaner, a handy cleaner, a stick cleaner, and

the like.

Among the cleaners, the wireless cleaner is advantageous in portability and

cleaning ranges because the wireless cleaner includes a rechargeable battery and thus

performs a cleaning operation while freely moving without being supplied with current

in a wired manner. The wireless cleaners are classified into a handy cleaner, a stick

cleaner, and the like.

The handy cleaner (hand vacuum cleaner) has maximized portability and is light

in weight. However, because the handy cleaner has a short length, there may be a

limitation to a cleaning region. Therefore, the handy cleaner is used to clean a local place such as a desk, a sofa, or an interior of a vehicle.

A user may use the stick cleaner while standing and thus may perform a cleaning

operation without bending his/her waist. Therefore, the stick cleaner is advantageous

for the user to clean a wide region while moving in the region. The handy cleaner may

be used to clean a narrow space, whereas the stick cleaner may be used to clean a wide

space and also used to a high place that the user's hand cannot reach. Recently,

modularized stick cleaners are provided, such that types of cleaners are actively changed

and used to clean various places.

Methods of cleaning floors are broadly classified into a dry-cleaning method and

a wet-cleaning method. The dry-cleaning method refers to a method of wiping up or

sucking dust, and a vacuum cleaner in the related art uses the dry-cleaning method. The

wet-cleaning method refers to a method of performing a cleaning operation by wiping up

the dust with a wet mop. As another wet-cleaning method, there is a method of

sterilizing and cleaning a floor by producing and spraying high-temperature steam.

In the related art, a dry-cleaning dedicated cleaner is used to perform the dry

cleaning method, and a wet-cleaning dedicated cleaner is used to perform the wet

cleaningmethod. However, a user is inconvenienced because the user needs to purchase

the two types of cleaners to clean various types of floors. To solve the above-mentioned

problem, research has been conducted on a cleaner including a single main body, a dry

cleaning module, and a wet-cleaning module and configured such that the dry-cleaning

module is mounted on the main body to perform the dry-cleaning method and the wet

cleaning module is mounted on the main body to perform the wet-cleaning method.

The wet-cleaning module includes a water container configured to store water, a

heater configured to produce steam by heating water, and a mop configured to wipe a

floor by receiving water or steam. The respective components may be configured into a single assembly so that the respective components may be easily replaced. For example, when the dry-cleaning module is mounted on the main body in a state in which the water container or the heater is disposed on the main body, the unnecessary component may hinder the cleaning operation. Therefore, the water container or the heater may be disposed on the wet-cleaning module instead of being mounted on the main body to ensure ease of cleaning, ease of module replacement, or spatial utilization.

Korean Utility Model Registration No. KR0489070Y1 discloses a wet mop

cleaner in which a main battery is provided in a cleaning module, and an auxiliary battery

is detachably coupled to an extension tube.

However, the wet mop cleaner cannot suck dust and uses a majority of power to

rotate a mop, and the coupled auxiliary battery is just used to increase the time for which

the cleaner is used.

In addition, when debris adheres to the floor, the debris may still remain on the

floor even though the cleaner configured to wipe the floor surface by rotating the mop

wipes the floor by rotating the mop with absorbed water.

In addition, in a case in which microorganisms and the like proliferate on the

floor, there is a limitation in perfectly eliminating the microorganisms even though the

cleaner wipes the floor by rotating the mop with absorbed water.

To solve the above-mentioned problem, a method of heating water to be supplied

to the mop may be considered. However, it is necessary to supply a large amount of

power to the cleaning module in the case in which the heater is additionally mounted in

the cleaning module and uses a large amount of power to heat the water.

Korean Patent No. KR0738478B1 discloses a cleaner capable of performing

steam cleaning and sucking dust.

The cleaner is configured by combining a steam cleaner and a vacuum cleaner and supply power from the steam cleaner to the vacuum cleaner.

However, since the cleaner supplies power on the basis of the steam cleaner that

uses a large amount of power, the cleaner needs to receive power in a wired manner or

use a large-scale battery, which causes a limitation in applying the concept of this cleaner

to a wireless handy cleaner.

Therefore, it is necessary to supply a large amount of power to the cleaning

module to heat water, and further, it is necessary to maintain the time for which the entire

cleaner may perform the cleaning operation.

In addition, to increase a capacity of a battery having a relatively heavy weight,

it is necessary to distribute the weight so that the user does not feel discomfort when using

the cleaner.

[Disclosure]

[Technical Problem]

The present disclosure has been made in an effort to solve the above-mentioned

problems of the wireless cleaner in the related art in which the cleaning module having

the steam generator is detachably coupled, and an object of the present disclosure is to

provide a cleaner having a battery with an increased total capacity.

Another object of the present disclosure is to provide a cleaner capable of

improving sterilization and debris removing effects by supplying high-temperature water

or steam to a mop.

Still another object of the present disclosure is to provide a cleaner capable of

supplying additional power and being easily manipulated.

Yet another object of the present disclosure is to provide a cleaner capable of

stably supplying power when the cleaning module produces steam.

Still yet another object of the present disclosure is to provide a cleaner capable of being equipped with an auxiliary battery and minimizing an increase in volume of a cleaning module.

[Technical Solution]

To achieve the above-mentioned objects, the present disclosure provides a

cleaner including: a cleaning module configured to eliminate debris on a floor surface;

and a cleaner main body including a battery configured to supply power to the cleaning

module, and a handle configured to be grasped by a user, in which the cleaning module

includes: a module housing having a mop disposed at a lower side thereof; a water tank

coupled to the module housing and configured to store water; a steam generator

configured to heat water introduced from the water tank; and an auxiliary battery coupling

unit provided on the module housing so that an auxiliary battery is detachably inserted

into and coupled to the auxiliary battery coupling unit.

In this case, at least a part of the auxiliary battery coupling unit may be disposed

on a rear surface of the module housing.

Further, the auxiliary battery may be inclined downward and inserted into the

auxiliary battery coupling unit.

The auxiliary battery may include: an auxiliary battery main body; and a coupling

button provided on the auxiliary battery main body and configured to be coupled to the

auxiliary battery coupling unit by a hook engagement.

At least a part of the coupling button may be exposed to the outside of the module

housing.

Further, at least a part of the coupling button may be disposed upward from the

module housing.

The auxiliary battery may be connected in series to the battery.

The auxiliary battery may be connected in parallel to the battery.

The auxiliary battery may be connected selectively in series or in parallel to the

battery.

The auxiliary battery may supply power to the steam generator.

The cleaning module may further include: a mop driving motor disposed in the

module housing and configured to provide a rotational force to the mop by rotating a

motor shaft; and a flow path forming part formed in the module housing and configured

to communicate with an intake port, the flow path forming part being configured to guide

air, which is introduced through the intake port, to the cleaner main body, and an

imaginary axial extension line of the motor shaft may pass through the flow path forming

part.

The auxiliary battery coupling unit may include an auxiliary battery coupling

groove that accommodates the auxiliary battery, and the auxiliary battery coupling groove

may be formed in a direction parallel to the floor surface from a rear surface of the module

housing toward a front side of the module housing in a state in which the cleaning module

is placed on the floor surface.

The auxiliary battery coupling groove may be formed to be inclined downward

at a predetermined angle with respect to the floor surface in a state in which the cleaning

module is placed on the floor surface.

The cleaning module may further include a diffuser configured to discharge

moisture passing through the steam generator to the mop, and the diffuser may be formed

in an annular shape.

The mop driving motor may be disposed inside the annular diffuser.

[Advantageous Effect]

The cleaner according to the present disclosure described above is equipped with

the auxiliary battery, which makes it possible to increase the total capacity of the battery.

It is possible to improve the sterilization and debris removing effects by

supplying high-temperature water or steam to the mop by means of the heater.

It is possible for the user to easily manipulate the cleaner while supplying

additional power by using the auxiliary battery.

It is possible to stably supply power when the auxiliary battery supplies

additional power to the heater and the cleaning module produces steam.

It is possible to minimize an increase in volume of the cleaning module even

though the cleaning module is equipped with the auxiliary battery.

[Description of Drawings]

FIG. 1 is a perspective view illustrating a cleaner according to an embodiment of

the present disclosure.

FIG. 2 is a perspective view for explaining a cleaner main body according to the

embodiment of the present disclosure.

FIG. 3 is a cross-sectional view for explaining the cleaner main body according

to the embodiment of the present disclosure.

FIG. 4 is a coupled perspective view for explaining a cleaning module according

to the embodiment of the present disclosure.

FIG. 5 is an exploded perspective view of FIG. 4.

FIG. 6 is a perspective view a state in which an upper housing is removed from

the cleaning module according to the embodiment of the present disclosure.

FIG. 7 is a bottom plan view illustrating the cleaning module according to the

embodiment of the present disclosure.

FIG. 8 is a cross-sectional view illustrating the cleaning module according to the

embodiment of the present disclosure.

FIG. 9 is a view illustrating a rear side of the cleaning module according to the embodiment of the present disclosure.

FIG. 10 is a view for explaining a process of coupling an auxiliary battery to the

cleaning module according to the embodiment of the present disclosure.

FIG. 11 is a view illustrating the rear side of the cleaning module in a state in

which the auxiliary battery is coupled to the cleaning module according to the

embodiment of the present disclosure.

FIG. 12 is a view illustrating a lateral side of FIG. 11.

FIG. 13 is a view for explaining an internal arrangement in which the auxiliary

battery is coupled to the cleaning module according to the embodiment of the present

disclosure.

FIG. 14 is a view illustrating a top side of FIG. 13.

FIG. 15 is a view illustrating a rear side of a cleaning module in a state in which

an auxiliary battery is coupled to the cleaning module according to a second embodiment

of the present disclosure.

FIG. 16 is a view illustrating a lateral side of FIG. 15.

FIG. 17 is a coupled perspective view for explaining a cleaning module according

to a third embodiment of the present disclosure.

FIG. 18 is a coupled perspective view for explaining a cleaning module according

to a fourth embodiment of the present disclosure.

[Mode for Invention]

Hereinafter, exemplary embodiments of the present disclosure will be described

in detail with reference to the accompanying drawings.

The present disclosure may be variously modified and may have various

embodiments, and particular embodiments illustrated in the drawings will be specifically

described below. The description of the embodiments is not intended to limit the present disclosure to the particular embodiments, but it should be interpreted that the present disclosure is to cover all modifications, equivalents and alternatives falling within the spirit and technical scope of the present disclosure.

In the description of the present disclosure, the terms such as "first" and "second"

may be used to describe various constituent elements, but the constituent elements may

not be limited by the terms. These terms are used only to distinguish one constituent

element from another constituent element. For example, a first component may be

named a second component, and similarly, the second component may also be named the

first component, without departing from the scope of the present disclosure.

The term "and/or" may include any and all combinations of a plurality of the

related and listed items.

When one constituent element is described as being "coupled" or "connected" to

another constituent element, it should be understood that one constituent element can be

coupled or connected directly to another constituent element, and an intervening

constituent element can also be present between the constituent elements. When one

constituent element is described as being "coupled directly to" or "connected directly to"

another constituent element, it should be understood that no intervening constituent

element is present between the constituent elements.

The terminology used herein is used for the purpose of describing particular

embodiments only and is not intended to limit the present disclosure. Singular

expressions may include plural expressions unless clearly described as different meanings

in the context.

The terms "comprises," "comprising," "includes," "including," "containing,"

"has," "having" or other variations thereof are inclusive and therefore specify the presence

of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Unless otherwise defined, all terms used herein, including technical or scientific

terms, may have the same meaning as commonly understood by those skilled in the art to

which the present disclosure pertains. The terms such as those defined in a commonly

used dictionary may be interpreted as having meanings consistent with meanings in the

context of related technologies and may not be interpreted as ideal or excessively formal

meanings unless explicitly defined in the present application.

Further, the following embodiments are provided to more completely explain the

present disclosure to those skilled in the art, and shapes and sizes of elements illustrated

in the drawings may be exaggerated for a more apparent description.

FIG. 1 is a perspective view illustrating a cleaner according to an embodiment of

the present disclosure, FIG. 2 is a perspective view for explaining a cleaner main body

according to the embodiment of the present disclosure, and FIG. 3 is a cross-sectional

view for explaining the cleaner main body according to the embodiment of the present

disclosure.

The term "floor surface" used in the present specification may mean not only a

floor surface of a room such as a living room but also a cleaning surface such as a carpet.

Referring to FIGS. 1 to 3, a cleaner 1 according to the embodiment of the present

disclosure may include a cleaner main body 100 having a suction motor 140 configured

to generate a suction force, a cleaning module 300 connected to the cleaner main body

100 and configured to clean the floor surface by wiping the floor surface while sucking

air and debris, and an extension tube 200 configured to connect the cleaner main body

100 and the cleaning module 300.

A structure of the cleaner main body 100 will be described below.

Meanwhile, in the embodiment of the present disclosure, directions may be

defined on the basis of when a bottom surface (lower surface) of a dust bin 170 and a

bottom surface (lower surface) of a battery housing 180 are placed on the ground surface.

In this case, a forward direction may mean a direction in which a suction part 120

is disposed on the basis of the suction motor 140, and a rearward direction may mean a

direction in which a handle 160 is disposed. Further, on the basis of a state in which the

suction part 120 is viewed from the suction motor 140, a rightward direction may refer to

a direction in which a component is disposed at the right, and a left direction may refer to

a direction in which a component is disposed at the left. In addition, in the embodiment

of the present disclosure, upper and lower sides may be defined in a direction

perpendicular to the ground surface on the basis of the state in which the bottom surface

(lower surface) of the dust bin 170 and the bottom surface (lower surface) of the battery

housing 180 are placed on the ground surface.

The cleaner 1 may include the cleaner main body 100. The cleaner main body

100 may include a main body housing 110, the suction part 120, a dust separating part

130, the suction motor 140, an air discharge cover 150, the handle 160, the dust bin 170,

the battery housing 180, and a battery 190.

The main body housing 110 may define an external appearance of the cleaner

main body 100. The main body housing 110 may provide a space that may

accommodate the suction motor 140 and a filter (not illustrated) therein. The main body

housing 110 may be formed in a shape similar to a cylindrical shape.

The suction part 120 may protrude outward from the main body housing 110.

For example, the suction part 120 may be formed in a cylindrical shape with an opened

inside. The suction part 120 may be coupled to the extension tube 200. The suction

part 120 may provide a flow path (hereinafter, referred to as a'suction flow path') through which air containing dust may flow.

The dust separating part 130 may communicate with the suction part 120. The

dust separating part 130 adopts a principle of a dust collector using a centrifugal force to

separate the dust sucked into the cleaner main body 100 through the suction part 120. A

space in the dust separating part 130 may communicate with a space in the dust bin 170.

For example, the dust separating part 130 may have one or more cyclone parts

capable of separating dust by using a cyclone flow. Further, the space in the dust

separating part 130 may communicate with the suction flow path. Therefore, air and

dust, which are introduced through the suction part 120, spirally flow along an inner

circumferential surface of the dust separating part 130. Therefore, the cyclone flow may

be generated in the internal space of the dust separating part 130.

The suction motor 140 may generate a suction force for sucking air. The suction

motor 140 may be accommodated in the main body housing 110. The suction motor

140 may generate the suction force by rotating. For example, the suction motor 140 may

be formed in a shape similar to a cylindrical shape.

The air discharge cover 150 may be disposed at one side of the main body

housing 110 based on an axial direction. The air discharge cover 150 may accommodate

the filter for filtering air. For example, an HEPA filter may be accommodated in the air

discharge cover 150.

The handle 160 may be grasped by a user. The handle 160 may be disposed

rearward from the suction motor 140. For example, the handle 160 may be formed in a

shape similar to a cylindrical shape. Alternatively, the handle 160 may be formed in a

curved cylindrical shape. The handle 160 may be disposed at a predetermined angle

with respect to the main body housing 110, the suction motor 140, or the dust separating

part 130.

The handle 160 may include a grip portion 161 formed in a column shape so that

the user may grasp the grip portion 161, a first extension portion connected to one end of

the grip portion 161 based on the longitudinal direction (axial direction) of the grip

portion 161 and extending toward the suction motor 140, and a second extension portion

connected to the other end of the grip portion 161 based on the longitudinal direction

(axial direction) of the grip portion 161 and extending toward the dust bin 170.

An upper side of the handle 160 may define an external appearance of a part of

an upper side of the cleaner 1.

An operating part 165 may be disposed on the handle 160. The operating part

165 may be disposed on an inclined surface formed in an upper region of the handle 160.

The user may input a command for operating or stopping the cleaner 1 through the

operating part 165.

The dust bin 170 may communicate with the dust separating part 130. The dust

bin 170 may store the dust separated by the dust separating part 130.

The dust bin 170 may include a dust bin main body 171.

The dust bin main body 171 may provide a space capable of storing the dust

separated from the dust separating part 130. For example, the dust bin main body 171

may be formed in a shape similar to a cylindrical shape.

For example, the dust bin main body 171 may be configured such that a lower

side of the dust bin main body 171 may be opened. In this case, a discharge cover 172

may be provided at the lower side of the dust bin main body 171 and selectively open the

lower side of the dust bin main body 171.

Meanwhile, according to the embodiment, the dust bin 170 may further include

a dust bin compression lever 173 and a compression member 174.

The dust bin compression lever 173 may be disposed outside the dust bin 170 or the dust separating part 130. The dust bin compression lever 173 may be disposed outside the dust bin 170 or the dust separating part 130 so as to be movable upward and downward. The dust bin compression lever 173 may be connected to the compression member 174. When the dust bin compression lever 173 is moved downward by external force, the compression member 174 may also be moved downward. Therefore, it is possible to provide convenience for the user. The compression member 174 and the dust bin compression lever 173 may return back to original positions by an elastic member

(not illustrated). Specifically, when the external force applied to the dust bin

compression lever 173 is eliminated, the elastic member may move the dust bin

compression lever 173 and the compression member 174 upward.

The compression member 174 may be disposed in the dust bin main body 171.

The compression member 174 may move in the internal space of the dust bin main body

171. Specifically, the compression member 174 may move upward or downward in the

dust bin main body 171. Therefore, the compression member may compress downward

the dust in the dust bin main body 171. In addition, when the discharge cover 172 is

separated from the dust bin main body 171 and thus the lower side of the dust bin 170 is

opened, the compression member 174 may move from an upper side of the dust bin 170

to the lower side of the of the dust bin 170, thereby removing debris such as residual dust

in the dust bin 170. Therefore, it is possible to improve the suction force of the cleaner

by preventing the residual dust from remaining in the dust bin 170. Further, it is possible

to remove an offensive odor caused by the residual dust by preventing the residual dust

from remaining in the dust bin 170.

The battery 190 may be accommodated in the battery housing 180. The battery

housing 180 may be disposed at a lower side of the handle 160.

For example, the battery housing 180 may have a hexahedral shape opened at a lower side thereof. A rear side of the battery housing 180 may be connected to the handle 160. In this case, the battery housing 180 may include an accommodation portion opened at a lower side thereof. With this configuration, the battery 190 may be attached or detached through the accommodation portion of the battery housing 180.

As another example, the battery housing 180 and the battery 190 may be

integrated in a state in which the battery housing 180 accommodates the battery 190.

The battery 190 serves to supply power to the cleaner 1. Specifically, the

battery 190 may supply power to the suction motor 140 and supply power to an electronic

circuit and an electronic component through electric wires embedded in the cleaner 1.

In addition, the battery 190 may supply power to the cleaning module 300.

In a case in which the battery 190 is coupled to the battery housing 180, a lower

side of the battery 190 may be exposed to the outside. Because the battery 190 may be

placed on the floor when the cleaner 1 is placed on the floor, the battery 190 may be

immediately separated from the battery housing 180. In addition, because the lower side

of the battery 190 is exposed to the outside and thus in direct contact with air outside the

battery 190, performance of cooling the battery 190 may be improved.

Meanwhile, in a case in which the battery 190 is fixed integrally to the battery

housing 180, the number of structures for attaching or detaching the battery 190 and the

battery housing 180 may be reduced, and as a result, it is possible to reduce an overall

size of the cleaner 1 and a weight of the cleaner 1.

The cleaner 1 may include the extension tube 200.

The extension tube 200 may be coupled to the cleaner main body 100 and the

cleaning module 300.

For example, the extension tube 200 may be formed in a long cylindrical shape.

Therefore, an internal space of the extension tube 200 may communicate with an internal space of the cleaning module 300. In addition, the extension tube 200 may communicate with the suction flow path formed in the suction part 120 of the cleaner main body 100.

When the suction force is generated by the suction motor 140, the suction force

may be provided to the cleaning module 300 through the suction part 120 and the

extension tube 200. Therefore, outside dust and air may be introduced into the cleaner

main body 100 through the cleaning module 300 and the extension tube 200. Inaddition,

dust and air introduced through the cleaning module 300 may pass through the extension

tube 200 and then be introduced into the cleaner main body 100. Further, the dust and

air, which has been introduced into the cleaner main body 100 and has passed through the

suction part 120, may be separated from the dust separating part 130, the dust may be

stored in the dust bin 170, and the air may be discharged to the outside through the air

discharge cover 150.

Meanwhile, an electric wire may be embedded in the extension tube 200.

Therefore, the cleaner main body 100 and the cleaning module 300 may be electrically

connected to each other through the extension tube 200.

FIGS. 4 to 9 are views for explaining the cleaning module according to the

embodiment of the present disclosure.

Referring to FIGS. 4 to 9, the cleaning module 300 according to the embodiment

of the present disclosure may include a module housing 310, and a connection tube 380

connected to the module housing 310 and configured to be movable.

For example, the cleaning module 300 according to the present embodiment may

be used in a state of being connected to a handy cleaner.

That is, the cleaning module 300 may be detachably connected to the cleaner

main body 100 or the extension tube 200. Therefore, when the cleaning module 300 is

connected to the cleaner main body 100 or the extension tube 200, the user may clean the floor surface by using the cleaning module 300. In this case, the cleaner main body 100 connected to the cleaning module 300 may separate dust in air through a multi-cyclone method.

The cleaning module 300 may be operated by power supplied from the cleaner

main body 100.

Since the cleaner main body 100 connected to the cleaning module 300 includes

the suction motor 140, the suction force generated by the suction motor 140 may be

exerted in the cleaning module 300, such that the cleaning module 300 may suck air and

debris on the floor surface.

Therefore, in the present embodiment, the cleaning module 300 serves to suck

air and debris on the floor surface and guide the air and debris to the cleaner 1.

The connection tube 380 may be connected to a central portion of a rear side of

the module housing 310 and guide the introduced air to the cleaner 1, but the present

disclosure is not limited thereto.

The directions according to the present embodiment will be defined to assist in

understanding the present disclosure. A portion of the cleaning module 300, which is

connected to the connection tube 380, may be defined as a rear portion (rear side) of the

cleaning module 300, and a portion of the cleaning module 300 opposite to the connection

tube 380 may be defined as a front portion (front side) of the cleaning module 300.

In addition, on the basis of a state in which an intake port 313a is viewed from

the connection tube 380, a left of a flow path forming part 313 may be defined as a left

side of the cleaning module 300, and a right side of the flow path forming part 313 may

be defined as a right side of the cleaning module 300. Further, a direction in which the

left and right sides are connected may be referred to as a leftward/rightward direction.

The leftward/rightward direction may mean a direction perpendicular to a forward/rearward direction on a horizontal plane.

In addition, on the basis of a state in which the wet mop module 300 is placed on

the floor surface, i.e., a state in which a mop 350 is placed on the floor surface and may

wipe the floor surface, a direction toward the floor surface may be defined as a lower or

downward side, and a direction away from the floor surface may be defined as an upper

or upward side.

The cleaning module 300 may further include rotary cleaning units 340 rotatably

provided at the lower side of the module housing 310.

For example, a pair of rotary cleaning units 340 may be arranged in the

leftward/rightward direction. In this case, the pair of rotary cleaning units 340 may be

independently rotated. For example, the rotary cleaning units 340 may include a first

rotary cleaning unit 341 and a second rotary cleaning unit 342.

The rotary cleaning units 340 may be coupled to the mops 350. For example,

the mop 350 maybe formed in a circular plate shape. The mops 350 may include a first

mop 351 and a second mop 352.

The mop 350 is brought into close contact with the floor surface by a load of the

cleaning module 300 in the state in which the mop 350 is placed on the floor surface, such

that a frictional force between the mop 350 and the floor surface increases.

The module housing 310 may define an external shape of the cleaning module

300 and have the intake port 313a through which air is introduced. For example, the

intake port 313a may be formed at a front end of the lower side of the module housing

310. The intake port 313a may extend from the module housing 310 in the

leftward/rightward direction.

The module housing 310 may include a lower housing 311 and an upper housing

312 coupled to an upper side of the lower housing 311.

The rotary cleaning units 340 are mounted at a lower side of the lower housing

311, and the lower housing 311 may define an external shape of the cleaning module 300.

The intake port 313a may be formed in the lower housing 311.

Aboard installation part may be provided on the lower housing 311, and a printed

circuit board 390 for controlling mop driving motors 370 is installed on the board

installation part. For example, the board installation part may be provided in the form

of a hook extending upward from the lower housing 311.

The board installation part may be disposed on the lower housing 311 and

positioned at one side of the flow path forming part 313, but the present disclosure is not

limitedthereto. For example, the printed circuit board 390 maybe disposed at a position

adjacent to first and second operating parts 391 and 392. Therefore, a switch installed

on the printed circuit board 390 may detect operations of the first and second operating

parts 391 and 392.

Nozzle holes (not illustrated) may be formed in the lower housing 311, and

diffusers 337 may penetrate the nozzle holes. Water or steam (moisture vapor) having

passed through a steam generator 336 and the diffusers 337 may be supplied to the mops

350 through the nozzle holes (not illustrated).

The upper housing 312 may cover an upper side of the lower housing 311 and

define an external shape of the cleaning module 300 according to the present disclosure.

In addition, the module housing 310 may further include the flow path forming

part 313 configured to define a flow path that communicates with the intake port 313a

and guides the air introduced from the intake port 313a to the cleaner main body 100.

The flow path forming part 313 may be coupled to a central portion of the upper

side of the lower housing 311, and an end of the flow path forming part 313 may be

connected to the connection tube 380.

Therefore, the intake port 313a may extend in the forward/rearward direction

approximately rectilinearly as the flow path forming part 313 is arranged. Therefore, a

length of the intake port 313a may be minimized, and a loss of the flow path in the

cleaning module 300 may be minimized.

A front side of the flow path forming part 313 may cover an upper side of the

intake port 313a. The flow path forming part 313 may be disposed such that the flow

path forming part 313 is inclined upward in a direction from a front end to a rear side of

the flow path forming part 313.

Therefore, a height of the front side of the flow path forming part 313 may be

lower than a height of the rear side of the flow path forming part 313.

According to the present embodiment, the height of the front side of the flow path

forming part 313 is low, which makes it possible to reduce a height of a front side of the

cleaning module 300 on the basis of an overall height of the cleaning module 300. The

lower the height of the cleaning module 300, the higher the likelihood that the cleaning

module 300 enters a narrow space below furniture or a chair and cleans the narrow space.

A blocker 314 is disposed on a lower surface of the lower housing 311. The

blocker 314 may block a front space in which the intake port 313a is disposed and a rear

space in which the mops 350 are disposed, thereby preventing moisture discharged from

the mops 350 from being diffused to the intake port 313a. For example, the blocker 314

may include a central portion 314a and extension portions 314b. In this case, a pair of

extension portions 314b may be symmetrically connected to two opposite ends on the

basis of the central portion 314a. Further, the central portion 314a maybe disposed at a

rear side of the intake port 313a and prevent the moisture from flowing toward the intake

port 313a. Further, the extension portion 314b may have an arc shape and surround the

circular mop 350.

A plurality of rollers may be provided at the lower side of the lower housing 311

and allow the cleaning module 300 to move smoothly.

For example, front rollers 315 may be disposed on the lower housing 311 and

positioned at front sides of the mops 315. The front rollers 315 may include a first roller

315a and a second roller 315b. The first roller 315a and the second roller 315b may be

disposed to be spaced apart from each other in the leftward/rightward direction.

The first and second rollers 315a and 315b may be rotatably connected to shafts,

respectively. The shaft maybe fixed to the lower side of the lower housing 311 in a state

in which the shaft extends in the leftward/rightward direction.

A distance between the shaft and a front end of the lower housing 311 may be

longer than a minimum distance between the mop 350 and the front end of the lower

housing 311.

For example, the rotary cleaning units 340 may be at least partially positioned

between the shaft of the first roller 315a and the shaft of the second roller 315b.

With this arrangement, the rotary cleaning units 340 may be positioned

maximally close to the intake port 313a, and an area of the floor surface, on which the

cleaning module 300 is positioned and the rotary cleaning units 340 performs a cleaning

operation, may be increased, such that the performance in cleaning the floor may be

improved.

In the present embodiment, the first and second rollers 315a and 315b are coupled

to the lower side of the lower housing 311, which makes it possible to improve mobility

of the cleaning module 300.

A third roller 316 may be further provided on the lower side of the lower housing

311. Therefore, the first and second rollers 315a and 315b and the third roller 316 may

support the cleaning module 300 at three points. In this case, the third roller 316 may be positioned at a lower side of the mop 350 so as not to interfere with the mop 350.

The module housing 310 may have a cooling air inlet port (not illustrated) and a

cooling air discharge port (not illustrated).

For example, the lower housing 311 may have the cooling air inlet port (not

illustrated). The outside air maybe introduced into the module housing 310 through the

cooling air inlet port (not illustrated). In addition, the cooling air inlet port (not

illustrated) may be formed in a front sidewall of the lower housing 311. With this

configuration, when the cleaning module 300 is moved forward by the user's

manipulation, the amount of air to be introduced may increase.

Further, the upper housing 312 may have the cooling air discharge port (not

illustrated). Air in the module housing 310 maybe discharged to the outside through

the cooling air discharge port (not illustrated). In addition, the cooling air discharge

ports (not illustrated) may be formed in sidewall at two opposite sides of the upper

housing 312. With this configuration, the air introduced through the cooling air inlet

port (not illustrated) may be guided to pass through the mop driving motor 370 while the

air flows toward the cooling air discharge port (not illustrated), which makes it possible

to prevent the mop driving motor 370 from being overheated.

Further, on the basis of the state in which the lower housing 311 is placed on the

floor surface, the cooling air discharge port may be disposed to be farther from the ground

surface than is the cooling air inlet port. With this configuration, the heated air may be

moved upward in the module housing 310 and effectively discharged through the cooling

air discharge port.

Meanwhile, the cleaner 1 according to the embodiment of the present disclosure

may include an auxiliary battery coupling unit 400 provided on the module housing 310.

For example, the auxiliary battery coupling unit 400 may be provided at the rear side of the module housing 310. An auxiliary battery 500 may be detachably coupled to the auxiliary battery coupling unit 400.

A specific structure of the auxiliary battery coupling unit 400 will be described

below.

The cleaning module 300 may further include a water tank 320 capable of

supplying a water to the mop 350.

The water tank 320 may be separably connected to the module housing 310.

Specifically, the water tank 320 is mounted on a water container seating portion formed

on the upper housing 312.

In addition, the water tank 320 may be disposed above the steam generator 336.

Specifically, the water tank 320 is disposed above the steam generator 336 and spaced

apart from the steam generator 336. That is, the water tank 320 may be disposed above

the steam generator 336 with the upper housing 112 interposed therebetween.

The water tank 320 may define an external appearance of the cleaning module

300 in the state in which the water tank 320 is mounted on the module housing 310.

The entire upper sidewall of the water tank 320 may substantially define an upper

external appearance of the cleaning module 300. Therefore, the user may visually check

whether the water tank 320 is mounted on the module housing 310.

The module housing 310 may further include a water tank separating button

configured to be manipulated by the user to separate the water tank 320 in the state in

which the water tank 320 is mounted on the module housing 310. For example, the

water tank separating button may be positioned on the central portion of the cleaning

module 300. Therefore, the user easily recognizes the water tank separating button and

manipulate the water tank separating button.

In the state in which the water tank 320 is mounted on the module housing 310, water in the water tank 320 may be supplied to the mops 350.

Specifically, a space capable of storing water is formed in the water tank 320.

The water stored in the water tank 320 may be supplied to the steam generator 336 through

at least one hose. The water introduced into the steam generator 336 may be heated and

changed in phase into steam (moisture vapor) depending on the user's selection. The

water heated by the steam generator 336 may be supplied to the mops 350 through the

diffuser 337.

The water tank 320 includes a water supply port. The water supply port is a

hole through which the water is introduced into the water tank 320. For example, the

water supply port may be formed in a lateral surface of the water tank 320.

The water tank 320 includes a drain port. The drain port is a hole through which

the water stored in the water tank 320 is discharged. The water discharged from the

drain port may flow to the steam generator 336. The drain port may be formed in a

lower surface of the water tank 320.

The water tank 320 includes an air hole. The air hole is a hole through which

air may be introduced into the water tank 320. When the water stored in the water tank

320 is discharged to the outside, a pressure in the water tank 320 is lowered, and air may

be introduced into the water tank 320 through the air hole to compensate for the lowered

pressure. For example, the air hole may be formed at an upper end of the water tank

320.

The cleaning module 300 according to the present disclosure may further include

a moisture supply unit 330 having a flow path through which the water introduced from

the water tank 320 is supplied to the mops 350.

Specifically, the moisture supply unit 330 may include a water tank connection

part 331 configured to introduce water in the water tank 320 into the module housing 310, a water inlet tube 332 configured to supply the water, which is introduced into the water tank connection part 331, to a water pump 333, a guide tube 334 configured to supply the water from the water pump 333 to a 'T'-shaped connector, and a water supply tube 335 configured to supply the water, which is introduced into the connector, to the steam generator 336 (see FIG. 14).

The water tank connection part 331 may operate a valve (not illustrated) in the

water tank 320, and the water may flow in the water tank connection part 331.

The water tank connection part 331 may be coupled to the lower side of the upper

housing 312, and a part of the water tank connection part 331 may protrude upward while

penetrating the upper housing 312.

The water tank connection part 331, which protrudes upward, may be retracted

into the water tank 320 while penetrating a discharge port of the water tank 320 when the

water tank 320 is seated on the upper housing 312.

The upper housing 312 may include a sealer to prevent the water discharged from

the water tank 320 from leaking from a periphery of the water tank connection part 331.

For example, the sealer may be made of rubber, coupled to the upper housing 312, and

disposed at the upper side of the upper housing 312.

The water pump 333 may be installed on the upper housing 312 and control the

discharge of the water from the water tank 320.

The water pump 333 may provide a flow force to water. The water pump 333

may include a first connection port connected to the water inlet tube 332, and a second

connection port connected to the guide tube 334. In this case, on the basis of the water

pump 333, the first connection port may be an inlet, and the second connection port may

be an outlet.

The water pump 333 is a pump in which a valve body operates to expand or contract the water and allow the first connection port and the second connection port to communicate with each other. Because the water pump 333 may be implemented by a publicly-known structure, a detailed description thereof will be omitted.

The water supply tube 335 may connect the connector to a water inlet port 336b

of the steam generator 336. For example, the water supply tube 335 may be a pair of

tubes branching off from the connector.

Therefore, the water supplied to the water inlet tube 332 flows into the water

pump 333 and then flows to the guide tube 334. The water flowing through the guide

tube 334 flows to the water supply tube 335 by means of the connector. Further, the

water flowing through the water supply tube 335 is supplied to the steam generator 336.

The steam generator 336 is a device configured to heat water. The steam

generator 336 is disposed in the module housing 310. Specifically, the steam generator

336 is installed on the upper side of the lower housing 311.

The steam generator 336 includes a heating chamber 336a, the water inlet port

336b, and a moisture discharge port 336c.

A flow path is formed in the heating chamber 336a, and the water introduced

from the water tank 320 may flow through the flow path. The heating chamber 336a

may heat the water by receiving power from the battery 190 and/or the auxiliary battery

500. The heating chamber 336a may adjust a temperature of the water under the user's

control. In addition, the heating chamber 336a may change the phase of the water to

steam (moisture vapor) under the user's control.

The water inlet port 336b may be a hole formed at an inlet end of the heating

chamber336a. The water, which is stored in the water tank 320, maybe introduced into

the steam generator 336 through the water inlet port 336b.

The moisture discharge port 336c may be a hole formed at an outlet end of the heating chamber 336a. The water or steam maybe discharged from the steam generator

336 through the moisture discharge port 336c. The moisture discharge port 336c may

be connected to the diffuser 337.

Meanwhile, in the present disclosure, the steam generator 336 is disposed to be

inclined. Specifically, the heating chamber 336a is disposed to be inclined at a

predetermined angle with respect to the ground surface (floor surface).

For example, a rear end of the heating chamber 336a is disposed upward from a

front end of the heating chamber 336a. That is, the steam generator 336 is inclined

upward in the direction toward the rear side. Therefore, the water may be heated while

flowing from a rear upper side to a front lower side of the steam generator 336.

Meanwhile, the water inlet port 336b may be disposed at a rear end of the heating

chamber 336a, and the moisture discharge port 336c may be disposed at a front end of the

heating chamber 336a. That is, on the basis of the state in which the lower housing 311

is placed on the floor surface (ground surface), the water inlet port 336b may be disposed

to be farther from the floor surface (ground surface) than is the moisture discharge port

336c. Therefore, the water is heated while flowing from the upper side to the lower side

by gravity, such that the water may be discharged through the moisture discharge port

336c by the flow force of the water even though the water ascends while changing in

phase into moisture vapor.

The diffuser 337 is configured to discharge the water in the water tank 320 to the

mop 350.

The diffuser 337 may be accommodated in a space formed in the module housing

310. The diffuser 337 maybe connected to the steam generator 336 and discharge the

moisture, which is heated by the steam generator 336, to the mop 350.

The pair of diffusers 337 may be mounted on the module housing 310 and arranged in the leftward/rightward direction. In addition, the pair of diffusers 337 arranged in the leftward/rightward direction may be formed symmetrically (mirror symmetrically).

In the present embodiment, the diffuser 337 may have therein a diffusion flow

path through which the moisture may flow, and the diffuser 337 may include nozzles

through which the moisture flowing through the diffusion flow path is discharged to the

mop.

For example, the diffuser 337 may have an annular shape (ring shape), and a

plurality of nozzles may be disposed at predetermined intervals in a circumferential

direction. In this case, the mop driving motor 370 may be disposed inside the annular

diffuser. With this configuration, the diffuser 337 may quickly supply the moisture to

the entire mop 350 having the circular plate shape. In addition, the diffuser 337 may

have a tube having a smaller thickness than a tube of another diffuser that supplies the

same amount of moisture as the diffuser 337, and as a result, the diffuser 337 is

advantageous in ensuring the space in the upward/downward direction. In addition, the

mop driving motor 370 is disposed at a central portion of the annular diffuser 337, which

makes it possible to improve spatial utilization. As a result, it is possible to ensure a

space through which the auxiliary battery 500 is inserted into the module housing 310.

As another example, the diffuser 337 may have a circular arc shape, the nozzle

may be provided in plural, and the plurality of nozzles may be disposed at predetermined

intervals. With this configuration, the diffuser 337 may stably supply moisture to the

mop 350 having the circular plate shape.

The water sprayed from the diffuser 337 passes through water passing holes

formed in the rotary cleaning unit 340 and then be supplied to the mop 350. The mop

350 wipes the floor while rotating in the state in which the mop 350 absorbs water supplied through the diffuser 337.

The rotary cleaning unit 340 may rotate by receiving power from the mop driving

motor370. For example, the rotary cleaning unit 340 maybe a rotary plate. Therotary

cleaning unit 340 may have a circular plate shape, and the mop 350 may be attached to a

lower surface of the rotary cleaning unit 340.

For example, the rotary cleaning unit 340 may be disposed at the lower side of

the module housing 310 and positioned at the rear side of the intake port 313a.

Therefore, when the cleaning module 300 performs the cleaning operation while

moving forward, debris and air on the floor surface may be sucked into the intake port

313a, and then the floor surface may be wiped by the mop 350.

For example, the rotary cleaning units 340 may include a first rotary cleaning

unit 341 connected to a first mop driving motor 371 and attached to a first mop 351, and

a second rotary cleaning unit 342 connected to a second mop driving motor 372 and

attached to a second mop 352.

Specifically, the rotary cleaning unit 340 may include an outer body having a

circular ring shape, an inner body positioned at a central region of the outer body and

spaced apart from an inner peripheral surface of the outer body, and a plurality of

connection ribs configured to connect an outer peripheral surface of the inner body to the

inner peripheral surface of the outer body.

In addition, the rotary cleaning unit 340 may include a plurality of water passing

holes formed in a circumferential direction to supply the mop 350 with the water

discharged through the diffuser 337.

Meanwhile, the rotary cleaning unit 340 may include an attachment means to

which the mop 350 is attached. For example, the attachment means may be a Velcro

fastener.

The rotary cleaning unit 340 may be disposed at the lower side of the lower

housing311. That is, the rotary cleaning unit 340 maybe disposed outside the module

housing 310.

In addition, the rotary cleaning unit 340 may be connected to the mop driving

motor 370 and receive power. For example, the rotary cleaning unit 340 may be

connected to the mop driving motor 370 by means of at least one gear and rotated by the

operation of the mop driving motor 370.

The rotary cleaning units 340 may include the first rotary cleaning unit 341 and

the second rotary cleaning unit 342.

In the present embodiment, a rotation center of the first rotary cleaning unit 341

and a rotation center of the second rotary cleaning unit 342 are spaced apart from each

other in the leftward/rightward direction.

The rotation center of the rotary cleaning unit 340 may be positioned to be farther

from a front end of the module housing 310 than is a central axis that bisects a length of

the module housing 310 based on the forward/rearward direction. This is to prevent the

rotary cleaning unit 340 from clogging the intake port 313a.

A distance between the rotation center of the first rotary cleaning unit 341 and

the rotation center of the second rotary cleaning unit 342 may be larger than a diameter

of the mop 350. This is to reduce friction between the first and second mops 351 and

352 caused by interference between the first and second mops 351 and 352 while the first

and second mops 351 and 352 rotate and to prevent a cleanable area from being reduced

by a portion in which the first and second mops 351 and 352 interfere with each other.

The mop 350 may wipe the floor surface while rotating.

The mop 350 may be coupled to a lower side of the rotary cleaning unit 340 and

face the floor surface.

The mop 350 is configured such that a bottom surface of the mop 350 facing the

floor has a predetermined area. The mop 350 has a flat shape. The mop 350 is

configured such that a width (or diameter) of the mop 350 in a horizontal direction is

sufficiently larger than a height of the mop 350 in a vertical direction. When the mop

350 is coupled to the lower housing 311, the bottom surface of the mop 350 may be in

parallel with the floor surface.

The bottom surface of the mop 350 may have an approximately circular shape,

and the mop 350 may have a rotationally symmetrical shape as a whole. In addition, the

mop 350 may be attached to or detached from the bottom surface of the rotary cleaning

unit 340. The mop 350 may be coupled to the rotary cleaning unit 340 and rotated

together with the rotary cleaning unit 340.

In the state in which the rotary cleaning unit 340 is coupled to the lower side of

the module housing 310, a part of the mop 350 protrudes outward from the cleaning

module 300, such that the mop 350 cleans not only a portion of the floor surface

positioned below the cleaning module 300 but also a portion of the floor surface

positioned outward from the cleaning module 300.

For example, the mop 350 may not only protrude toward two opposite sides of

the cleaning module 300 but also protrude rearward.

The mops 350 may include the first mop 351 coupled to the first rotary cleaning

unit 341, and the second mop 352 coupled to the second rotary cleaning unit 342.

Therefore, when the first rotary cleaning unit 341 rotates by receiving power from the

first mop driving motor 371, the first mop 351 may also rotate. When the second rotary

cleaning unit 342 rotates by receiving power from the second mop driving motor 372, the

second mop 352 may also rotate.

Meanwhile, although not illustrated, the cleaning module 300 according to the present embodiment may further include a light-emitting module.

The light-emitting module may emit light to a location in front of the cleaning

module 300 and allow the user to recognize debris or microorganisms existing in front of

the cleaning module 300.

The light-emitting module may be disposed at a front side of the module housing

310. For example, the light-emitting module maybe disposed on a front surface of the

lower housing 311. The light-emitting module may be provided in plural, and the

plurality of light-emitting modules may be disposed in the leftward/rightward direction.

The light-emitting module may emit light to a location in front of or below the

cleaning module. For example, the light-emitting module may include a plurality of

LEDs. In this case, the light emitted from the light-emitting module may be visible rays.

According to the embodiments, the light emitted from the light-emitting module may be

infrared (IR) rays or ultraviolet (UV) ray. With this configuration, when the light

emitting module operates, the user may recognize whether debris or microorganism exists

at a location in front of the cleaning module 300. Further, the light-emitting module

may sterilize or eliminate debris or microorganism existing at the location in front of the

cleaning module 300, thereby improving hygiene.

Meanwhile, the cleaning module 300 may further include the mop driving motor

370 configured to provide power for rotating the mop 350 and the rotary cleaning unit

340.

Specifically, the mop driving motors 370 may include the first mop driving motor

371 configured to rotate the first rotary cleaning unit 341, and the second mop driving

motor 372 configured to rotate the second rotary cleaning unit 342.

As described above, the first and second mop driving motors 371 and 372

operates independently. Therefore, even though any one of the first and second mop driving motors 371 and 372 is broken down, the rotary cleaning unit 340 may be rotated by the other of the first and second mop driving motors 371 and 372.

Meanwhile, the first and second mop driving motors 371 and 372 may be

arranged on the module housing 310 and spaced apart from each other in the

leftward/rightward direction. Further, the first and second mop driving motors 371 and

372 may be positioned rearward from the intake port 313a.

The mop driving motor 370 maybe disposed in the module housing 310. For

example, the mop driving motor 370 may be seated on the upper side of the lower housing

311 and covered by the upper housing 312. That is, the mop driving motor 370 may be

positioned between the lower and upper housings 311 and 312.

The mop driving motor 370 may include a motor shaft 371a. Themopdriving

motor 370 may generate a rotational force and provide the rotational force to the mop 350

by rotating the motor shaft 371a.

Meanwhile, in the present embodiment, the motor shaft 371a may be disposed in

a direction in which the motor shaft 371a traverses in the forward/rearward direction of

the cleaning module 300. For example, an imaginary extension line of a rotation axis of

the motor shaft 371a may pass through the flow path forming part 313. Inaddition,the

imaginary extension lines of the rotation axes of the pair of motor shafts 371a may

intersect each other. For example, the imaginary extension line of the first motor shaft

371a may intersect the imaginary extension line of the second motor shaft 372a. Inthis

case, a point at which the imaginary extension line of the first motor shaft 371a and the

imaginary extension line of the second motor shaft 372a intersect each other may be

positioned inside the module housing 310, and particularly, inside the flow path forming

part 313.

With this configuration, it is possible to reduce a space in the module housing

310 based on the forward/rearward direction, which is occupied by the mop driving

motors 370, and to ensure a rear space in the module housing 310. Therefore, in the

present disclosure, an overall volume of the module housing 310 does not increase even

though the auxiliary battery 500 is coupled.

Meanwhile, the cleaning module 300 includes the connection tube 380 coupled

to the cleaner main body 100 or the extension tube 200.

The connection tube 380 may include a first connection tube 381 connected to an

end of the flow path forming part 313, a second connection tube 382 rotatably connected

to the first connection tube 381, and a guide tube configured to allow the internal spaces

of the first and second connection tubes 381 and 382 to communicate with each other.

The first connection tube 381 has a tubular shape. One axial end of the first

connection tube 381 may be connected to an end of the flow path forming part 313, and

the other axial end of thefirst connection tube 381 may be rotatably coupled to the second

connection tube 382. In this case, the first connection tube 381 has a shape in which a

part of an outer peripheral surface thereof is cut out. The first connection tube 381 may

be disposed so that the cut-out portion is directed upward toward the second connection

tube 382. With this configuration, in the state in which the cleaning module 300 is

placed on the ground surface, an angle of the second connection tube 382 with respect to

the ground surface may be changed by a motion of the user's hand. That is, the first and

second connection tubes 381 and 382 may serve as a kind ofjoint capable of adjusting an

angle of the cleaning module 300 and an angle of the cleaner main body 100.

The second connection tube 382 has a tubular shape. One axial end of the

second connection tube 382 is rotatably coupled to the first connection tube 313, and the

other axial end of the second connection tube 382 is detachably coupled as the cleaner

main body 100 or the extension tube 200 is inserted into the other axial end of the second connection tube 382.

Meanwhile, the electric wires may be embedded in the first and second

connection tubes 381 and 382, respectively, and the electric wire embedded in the first

connection tube 381 and the electric wire embedded in the second connection tube 382

may be electrically connected to each other. With this configuration, the current applied

from the battery 190 of the cleaner main body 100 may be transmitted to the cleaning

module 300.

Meanwhile, the guide tube may connect the internal space of the first connection

tube 381 and the internal space of the second connection tube 382. The guide tube may

have a flow path formed therein so that the air sucked into the cleaning module 300 flows

to the extension tube 200 and/or the cleaner main body 100. In this case, the guide tube

may be deformed together with the first and second connection tubes 381 and 382 as the

first and second connection tubes 381 and 382 rotate. For example, the guide tube may

be provided in the form of a corrugated tube (bellows-shaped tube).

Meanwhile, the second connection tube 382 may have an extension tube

separating button 384. On the basis of a state in which the second connection tube 382

stands to be perpendicular to the ground surface, the extension tube separating button 384

may be disposed at a front side of the second connection tube 382. Alternatively, the

extension tube separating button 384 may be disposed at an upper side of the second

connection tube 382 in a state in which the second connection tube 382 is in parallel with

the ground surface or inclined at a predetermined angle with respect to the ground surface.

The extension tube separating button 384 may be coupled to the extension tube

200 by a hook engagement. When an external force is applied, the extension tube

separating button 384 maybe decoupled from the extension tube 200. Forexample,the

extension tube separating button 384 may be provided in the form of an elongated board, and a hook may be provided at one end (a front end) of the extension tube separating button 384. In addition, a hinge part may be provided on a central portion of the extension tube separating button 384, such that the extension tube separating button 384 may be hingedly coupled to the second connection tube 382. In this case, a torsion spring may be provided on the hinge part and elastically support the coupling between the extension tube separating button 384 and the extension tube 200. Further, a button part may be provided at the other end (a rear end) of the extension tube separating button

384 and guide a position at which the user pushes the extension tube separating button

384. With this configuration, the hook of the extension tube separating button 384 may

be coupled to the extension tube 200 by the hook engagement. When the user pushes

the button part, the button part rotates about the hinge part, such that the extension tube

separating button 384 may be decoupled from the extension tube 200.

In addition, the second connection tube 382 may have a support protrusion 385.

On the basis of the state in which the second connection tube 382 stands to be

perpendicular to the ground surface, the support protrusion 385 may be disposed at a rear

side of the second connection tube 382. Alternatively, the support protrusion 385 may

be disposed at a lower side of the second connection tube 382 in the state in which the

second connection tube 382 is in parallel with the ground surface or inclined at a

predetermined angle with respect to the ground surface.

The support protrusion 385 includes a protruding portion and a support portion.

The protruding portion may protrude from an outer peripheral surface of the second

connection tube 382. The support portion may have a plate shape perpendicular to the

protruding portion.

When the cleaner main body 100 is placed on the ground surface (floor surface),

the support portion may come into contact with the ground surface and support the connection tube 380. With this configuration, the connection tube 380 and/or the extension tube 200 may be stably supported when the cleaner 1 is placed on the floor surface, which makes it possible to prevent damage to the connection tube 380 and/or the extension tube 200.

Meanwhile, the cleaning module 300 may include the printed circuit board 390

on which a module control unit (not illustrated) configured to control the cleaning module

300 is disposed. The current may be applied to the printed circuit board 390, and a

communication line may be disposed on the printed circuit board 390. In this case, the

printed circuit board 390 may be cooled by air which is introduced into a cooling air inlet

port 317 and discharged to a cooling air discharge port 318.

Meanwhile, the module housing 310 may further include the first operating part

391 configured to adjust the amount of water to be discharged from the water tank 320.

For example, the first operating part 391 may be positioned at the rear side of the module

housing 310.

The user may manipulate the first operating part 391. The user may manipulate

the first operating part 391 to allow the water tank 320 to discharge water or not to

discharge water.

Alternatively, the first operating part 391 may adjust the amount of water to be

discharged from the water tank 320. For example, the user may manipulate the first

operating part 391 so that a first amount of water is discharged per unit time from the

water tank 320 or a second amount of water, which is larger than the first amount of water,

is discharged per unit time.

The first operating part 391 may be disposed on the module housing 310 and

configured to pivot in the leftward/rightward direction. According to the embodiments,

the first operating part 391 may pivot in the upward/downward direction.

For example, the amount of water to be discharged is 0 when thefirst operating

part 391 is positioned at a neutral position. When the first operating part 391 is pushed

leftward and the first operating part 391 pivots leftward, the first amount of water may be

discharged per unit time from the water tank 320. Further, when the first operating part

391 is pushed rightward and the first operating part 391 pivots rightward, the second

amount of water may be discharged per unit time from the water tank 320.

Meanwhile, the module housing 310 may further include a second operating part

392 configured to adjust a phase of the moisture discharged from the steam generator 336.

For example, the second operating part 392 may be positioned at the rear side of the

module housing 310.

The user may adjust the second operating part 392. The user may adjust the

second operating part 392 so that the water or steam (moisture vapor) may be discharged

from the steam generator 336 to the mop 350.

The second operating part 392 may be rotatably provided on the module housing

310. For example, the second operating part 392 maybe a rotary handle (dial).

For example, in a state in which the second operating part 392 rotates and

indicates a first position, the steam generator 336 does not heat water and may discharge

room-temperature water to the mop 350. In addition, in a state in which the second

operating part 392 rotates and indicates a second position different from the first position,

the steam generator 336 may heat water and discharge the heated water to the mop 350.

In addition, in a state in which the second operating part 392 rotates and indicates a third

position different from the first and second positions, the steam generator 336 changes

the phase of water into steam (moisture vapor) by heating the water and then discharges

the steam to the mop 350.

Meanwhile, FIG. 10 is a view for explaining a process of coupling an auxiliary battery to the cleaning module according to the embodiment of the present disclosure,

FIG. 11 is a view illustrating the rear side of the cleaning module in a state in which the

auxiliary battery is coupled to the cleaning module according to the embodiment of the

present disclosure, FIG. 12 is a view illustrating a lateral side of FIG. 11, FIG. 13 is a

view for explaining an internal arrangement in which the auxiliary battery is coupled to

the cleaning module according to the embodiment of the present disclosure, and FIG. 14

is a view illustrating a top side of FIG. 13.

The cleaning module 300 and the auxiliary battery coupling unit 400 provided on

the cleaning module 300 according to the embodiment of the present disclosure will be

described below with reference to FIGS. 10 to 14.

The auxiliary battery coupling unit 400 may be provided on the cleaning module

300, and the auxiliary battery 500 may be detachably coupled to the auxiliary battery

coupling unit 400. Specifically, the auxiliary battery coupling unit 400 may be provided

on the module housing 310 of the cleaning module 300 and accommodate the auxiliary

battery 500 therein.

The auxiliary battery coupling unit 400 may include an auxiliary battery

accommodation groove 410, a terminal 420, a coupling projection 430, and a power

connection part (not illustrated).

The auxiliary battery accommodation groove 410 may be concavely recessed in

a rear surface of the module housing 310. The auxiliary battery 500 maybe detachably

accommodated in the auxiliary battery accommodation groove 410.

Meanwhile, in the embodiment of the present disclosure, the auxiliary battery

accommodation groove 410 may be provided in the form of a groove concavely recessed

toward the inside of the module housing 310 from the rear surface 312a of the module

housing 310. In this case, a direction in which the auxiliary battery accommodation groove 410 is formed may be a direction parallel to the floor surface (ground surface).

That is, the auxiliary battery accommodation groove 410 may be recessed from

the rear surface 312a of the module housing 310 toward the front side of the cleaning

module 300 in the direction parallel to the floor surface (ground surface). In addition,

the auxiliary battery accommodation groove 410 may be formed in the direction parallel

to a direction in which a bottom surface of the lower housing 311 is formed. Inaddition,

the auxiliary battery accommodation groove 410 may be formed in a direction parallel to

an imaginary extension surface of the rotary cleaning unit 340 having the circular plate

shape.

The auxiliary battery 500 and the auxiliary battery coupling unit 400 may be

coupled by inserting the auxiliary battery 500 into the auxiliary battery coupling unit 400

in the direction parallel to the floor surface on the basis of the state in which the cleaning

module 300 is placed on the floor surface (ground surface) (see FIG. 10).

This configuration may minimize the volume of the auxiliary battery 500

accommodated in the cleaning module 300. In addition, it is possible to minimize the

volume of the cleaning module 300 in the state in which the auxiliary battery 500 is

coupled to the cleaning module 300. In addition, it is possible to minimize the exposure

of the auxiliary battery 500 from the cleaning module 300 to which the auxiliary battery

500 is coupled.

The auxiliary battery accommodation groove 410 may accommodate the

auxiliary battery 500. The auxiliary battery accommodation groove 410 may have a

shape corresponding to a shape of the auxiliary battery main body 510 so that the auxiliary

battery main body 510 may be inserted into the auxiliary battery accommodation groove

410. For example, a diameter of the auxiliary battery accommodation groove 410 based

on the forward/rearward direction may be equal to or larger than a diameter of the battery main body 510 based on the forward/rearward direction. In addition, a diameter of the auxiliary battery accommodation groove 410 based on the leftward/rightward direction may be equal to or larger than a diameter of the battery main body 510 based on the leftward/rightward direction. In addition, a curvature of a sidewall of the auxiliary battery accommodation groove 410 may be equal to a curvature of an outer surface of the battery main body 510.

The terminal 420 may be provided in the auxiliary battery accommodation

groove410. The terminal 420 maybe provided in the auxiliary battery accommodation

groove 410 and disposed at a position farthest from an inlet into which the auxiliary

battery 500 is inserted. With this configuration, when the auxiliary battery 500 is

coupled to the auxiliary battery accommodation groove 410, a terminal provided on an

electric connection part 540 of the auxiliary battery 500 may come into contact with the

terminal 420.

The catching projection 430 may be coupled to the auxiliary battery 500 by a

hook engagement. The catching projection 430 may be formed on the sidewall of the

auxiliary battery accommodation groove 410. For example, the catching projections

430 may be respectively formed at two opposite sides of the sidewall of the auxiliary

battery accommodation groove 410 based on the leftward/rightward direction. A

coupling button 520 of the auxiliary battery 500 may be coupled to the catching projection

430. In this case, a button part 521 of the coupling button 520 may be caught and

supported by the catching projection 430, and a hook 522 of the coupling button 520 may

be coupled to the catching projection 430 by a hook engagement.

The power connection part (not illustrated) may electrically connect the auxiliary

battery 500 and the cleaning module 300. With this configuration, the auxiliary battery

500 may supply power to the cleaning module 300.

In addition, the power connection part (not illustrated) may electrically connect

the auxiliary battery 500 and the battery 190. In this case, the power connection part

(not illustrated) may be configured as a separate circuit provided on the module housing

310. Of course, the power connection part (not illustrated) may be provided on the

printed circuit board 390.

For example, the power connection part (not illustrated) may connect the

auxiliary battery 500 and the battery 190 in series. With this configuration, the auxiliary

battery 500 may be connected in series to the battery 190 and supply power to the cleaning

module 300.

Therefore, when high-voltage power is required, the cleaner 1 according to the

present disclosure may connect the auxiliary battery 500 and the battery 190 in series and

supply the high-voltage power to the cleaning module 300.

As another example, the power connection part (not illustrated) may connect the

auxiliary battery 500 and the battery 190 in parallel. With this configuration, the

auxiliary battery 500 may be connected in parallel to the battery 190 and supply power to

the cleaning module 300.

Therefore, when high-capacity power is required, the cleaner 1 according to the

present disclosure may connect the auxiliary battery 500 and the battery 190 in parallel

and supply the high-capacity power to the cleaning module 300.

Meanwhile, in the present disclosure, the power connection part (not illustrated)

may switch the connection between the series connection between the auxiliary battery

500 and the battery 190 and the parallel connection between the auxiliary battery 500 and

the battery 190. Specifically, the power connection part (not illustrated) may change

electrical connection between the auxiliary battery 500, the battery 190, and the cleaning

module 300.

Meanwhile, according to the embodiments, the power connection part (not

illustrated) may connect the auxiliary battery 500 and the steam generator 336. In this

case, the battery 190 may supply power to the components of the cleaner 1 including the

suction motor 140 but excluding the steam generator 336, and the auxiliary battery 500

may supply power only to the steam generator 336. With this configuration, the

auxiliary battery 500 may supply power directly to the steam generator 336.

Therefore, the auxiliary battery 500 may stably supply power to the steam

generator 336 that requires a relatively large amount of power.

Meanwhile, in the state in which the auxiliary battery 500 is coupled to the

auxiliary battery coupling unit 400, at least a part of the coupling button 520 of the

auxiliary battery 500 may be exposed to the outside of the module housing 310. For

example, in the state in which the auxiliary battery 500 is coupled to the auxiliary battery

coupling unit 400, at least a part of the coupling button 520 of the auxiliary battery 500

may be disposed to protrude further than the rear surface 312a of the module housing 310.

With this configuration, the user may ascertain that the auxiliary battery 500 is coupled

while visually recognizing the coupling button 520 in the state in which the auxiliary

battery 500 is coupled to the auxiliary battery coupling unit 400. Therefore, the user

may grasp the coupling button 520 and separate the auxiliary battery 500 from the

cleaning module 300 by pushing the coupling button 520.

Therefore, according to the present embodiment, the user may couple the

auxiliary battery 500 to the rear surface 312a of the cleaning module 300 and supply

additional power to the cleaning module 300.

The auxiliary battery 500 may supply power to the cleaning module 300. The

auxiliary battery 500 may include the auxiliary battery main body 510, the coupling

button 520, and an electric connection part 530.

The auxiliary battery main body 510 may supply power to the cleaner main body

100 or the cleaning module 300. The auxiliary battery main body 510 may define an

external shape of the auxiliary battery 500 and store electrical energy therein. For

example, the auxiliary battery main body 510 may be a secondary battery.

The coupling button 520 may be disposed on a lateral side of the auxiliary battery

main body 510. For example, a pair of coupling buttons 520 may be provided and

disposed at two opposite sides of the auxiliary battery main body 510.

The coupling button 520 may be coupled to the catching projection 430 of the

auxiliary battery coupling unit 400 by the hook engagement. For example, the coupling

button 520 may include the button part 521 and the hook 522. One end of the button

part 521 may be connected to one side of the auxiliary battery main body 510. In this

case, the button part 521 may be made of a material having elasticity. Further, the hook

522 may be connected to the other end of the button part 521 and protrude in a direction

away from the auxiliary battery main body 510. The hook 522 maybe coupledto the

catching projection 430 by the hook engagement.

With this configuration, when the auxiliary battery 500 is coupled to the auxiliary

battery coupling unit 400, the hook 522 may be coupled to the catching projection 430 by

the hook engagement. Further, the user may separate the auxiliary battery 500 from the

auxiliary battery coupling unit 400 by pulling the auxiliary battery 500 while pushing the

button part 521.

The electric connection part 530 may be provided at a lower side of the auxiliary

battery main body 510. When the auxiliary battery 500 is coupled to the auxiliary

battery coupling unit 400, the electric connection part 530 may be electrically connected

to the terminal 420 of the auxiliary battery coupling unit 400. With this configuration,

when the auxiliary battery 500 is coupled to the auxiliary battery coupling unit 400, power stored in the auxiliary battery 500 may be supplied to the cleaner main body 100 or the cleaning module 300.

FIGS. 15 and 16 illustrates a cleaning module of a cleaner according to a second

embodiment of the present disclosure.

A cleaning module 1300 according to a second embodiment of the present

disclosure will be described below with reference to FIGS. 15 and 16.

Meanwhile, to avoid the repeated description, the description of the cleaning

module 300 according to the embodiment of the present disclosure may be applied to the

description of the cleaning module 1300, except for the components that will be

particularly described in the present embodiment, because the cleaning module 1300 is

identical in configuration and effect to the cleaning module 300.

In the present embodiment, an auxiliary battery accommodation groove 1410

may be inclined downward toward an inside of a module housing 1310 from at least a

part of a rear surface 1312a of the module housing 1310.

Specifically, the auxiliary battery accommodation groove 1410 may be provided

in the form of a groove recessed and inclined downward from an upper end of the rear

surface 1312a of the module housing 1310 and a rear end of an upper surface of the

module housing 1310. In this case, on the basis of the state in which the cleaning module

1300 is placed on the floor surface (ground surface), a direction in which the auxiliary

battery accommodation groove 1410 is formed may be inclined at a predetermined angle

Owith respect to the floor surface (ground surface). In addition, the direction in which

the auxiliary battery accommodation groove 1410 is formed may be inclined at a

predetermined angle 0 with respect to a direction in which a bottom surface of the lower

housing 1311 is formed. In addition, the direction in which the auxiliary battery

accommodation groove 1410 is formed may be inclined at a predetermined angle 0 with respect to a direction in which the flow path in the first connection tube 1381 is formed.

In addition, the direction in which the auxiliary battery accommodation groove 1410 is

formed may be inclined at a predetermined angle 0 with respect to an imaginary extension

surface of the rotary cleaning unit 340 having the circular plate shape.

That is, the auxiliary battery accommodation groove 1410 may be recessed in a

direction inclined at a predetermined angle with respect to the floor surface (ground

surface) from the upper end of the rear surface 1312a of the module housing 1310 and the

rear end of the upper surface of the module housing 1310.

With this configuration, the auxiliary battery 500 may be inclined at a

predetermined angle 0 with respect to the floor surface (ground surface) and inserted into

the auxiliary battery coupling unit 1400. Therefore, it is possible to prevent the auxiliary

battery 500 from interfering with a connection tube 1380 at the time of inserting the

auxiliary battery 500 into the auxiliary battery coupling unit 1400. In addition, the user's

finger may easily approach the coupling button 520 at the time of separating the auxiliary

battery 500 from the auxiliary battery coupling unit 1400, such that the user may separate

the auxiliary battery 1500 by comfortably pushing the coupling button 520.

Meanwhile, in the state in which the auxiliary battery 500 is coupled to the

auxiliary battery coupling unit 1400, at least a part of the coupling button 520 of the

auxiliary battery 500 may be exposed to the outside of the module housing 1310. For

example, in the state in which the auxiliary battery 500 is coupled to the auxiliary battery

coupling unit 1400, at least a part of the coupling button 520 may be disposed upward

from the module housing. With this configuration, the user may ascertain that the

auxiliary battery 500 is coupled while visually recognizing the coupling button 520 in the

state in which the auxiliary battery 500 is coupled to the auxiliary battery coupling unit

1400. Therefore, the user may easily grasp the coupling button 520 and separate the auxiliary battery 500 from the cleaning module 1300 by pushing the coupling button 520.

Therefore, according to the present embodiment, the user may couple the

auxiliary battery 500 to at least a part of the rear surface 1312a of the cleaning module

1300 and supply additional power to the cleaning module 1300.

FIG. 17 is a coupled perspective view for explaining a cleaning module according

to a third embodiment of the present disclosure.

A cleaning module 2300 according to a third embodiment of the present

disclosure will be described below with reference to FIG. 17.

Meanwhile, to avoid the repeated description, the description of the cleaning

module 300 according to the embodiment of the present disclosure may be applied to the

description of the cleaning module 2300, except for the components that will be

particularly described in the present embodiment, because the cleaning module 2300 is

identical in configuration and effect to the cleaning module 300.

In the present embodiment, the auxiliary battery accommodation groove may be

formed in an upper surface of the module housing 2310. That is, in the present

embodiment, an auxiliary battery 2500 may be inserted into and coupled to the upper

surface of the module housing 2310. For example, a water tank 2320 maybe disposed

at an upper side of the module housing 2310, and the auxiliary battery 2500 may be

coupled to an upper side of the water tank 2320.

With this configuration, the auxiliary battery 2500 may be coupled to the module

housing 2310 by being inserted in a direction perpendicular to the ground surface on the

basis of the state in which the cleaning module 2300 is placed on the ground surface.

Meanwhile, in the present embodiment, on the basis of the state in which the

auxiliary battery 2500 is coupled to the cleaning module 2300 and the cleaning module

2300 is placed on the ground surface, a length of the auxiliary battery 2500 based on the forward/rearward direction and a length of the auxiliary battery 2500 based on the leftward/rightward direction may be larger than a height of the auxiliary battery 2500 based on the upward/downward direction. That is, in the present embodiment, the auxiliary battery 2500 may be formed in a shape similar to a flat hexahedral shape.

With this configuration, in the present embodiment, it is possible to prevent an

increase in overall height of the cleaning module 2300 even though the auxiliary battery

2500 is coupled to the upper side of the cleaning module 2300.

Therefore, according to the present embodiment, the user may push and insert

the auxiliary battery 2500 downward in the vertical direction in the state in which the

cleaning module 2300 is placed on the ground surface. Therefore, it is possible to

provide ease of coupling the auxiliary battery 2500.

FIG. 18 is a coupled perspective view for explaining a cleaning module according

to a fourth embodiment of the present disclosure.

A cleaning module 3300 according to a fourth embodiment of the present

disclosure will be described below with reference to FIG. 18.

Meanwhile, to avoid the repeated description, the description of the cleaning

module 300 according to the embodiment of the present disclosure may be applied to the

description of the cleaning module 3300, except for the components that will be

particularly described in the present embodiment, because the cleaning module 3300 is

identical in configuration and effect to the cleaning module 300.

In the present embodiment, the auxiliary battery accommodation groove may be

formed in an upper surface of the module housing 3310. That is, in the present

embodiment, an auxiliary battery 3500 may be inserted into and coupled to the upper

surface of the module housing 3310. For example, a water tank 3320 maybe disposed

at an upper side of the module housing 3310, a steam generator 3336 may be provided at an upper side of the water tank 3320, and the auxiliary battery 3500 may be coupled to an upper side of the steam generator 3336.

With this configuration, the auxiliary battery 3500 may be coupled to the cleaning

module 3300 by being inserted in a direction perpendicular to the ground surface on the

basis of the state in which the cleaning module 3300 is placed on the ground surface.

Meanwhile, in the present embodiment, on the basis of the state in which the

auxiliary battery 3500 is coupled to the cleaning module 3300 and the cleaning module

3300 is placed on the ground surface, a length of the auxiliary battery 3500 based on the

forward/rearward direction and a length of the auxiliary battery 3500 based on the

leftward/rightward direction may be larger than a height of the auxiliary battery 3500

based on the upward/downward direction. That is, in the present embodiment, the

auxiliary battery 3500 may be formed in a shape similar to a flat hexahedral shape.

With this configuration, in the present embodiment, it is possible to prevent an

increase in overall height of the cleaning module 3300 even though the auxiliary battery

3500 is coupled to the upper side of the cleaning module 3300.

Meanwhile, in the present embodiment, the auxiliary battery 3500 may be

electrically connected directly to the steam generator 3336. In this case, since the

auxiliary battery 3500 is coupled to directly to the upper side of the steam generator 3336,

power of the auxiliary battery 3500 may be easily supplied to the steam generator 3336.

While the present disclosure has been described with reference to the specific

embodiments, the specific embodiments are only for specifically explaining the present

disclosure, and the present disclosure is not limited to the specific embodiments. It is

apparent that the present disclosure may be modified or altered by those skilled in the art

without departing from the technical spirit of the present disclosure.

All the simple modifications or alterations to the present disclosure fall within the scope of the present disclosure, and the specific protection scope of the present disclosure will be defined by the appended claims.

Claims (14)

1. [CLAIMS]

   [Claim 1]

   A cleaner comprising:

   a cleaning module configured to eliminate debris on a floor surface; and

   a cleaner main body comprising a battery configured to supply power to the

   cleaning module, and a handle configured to be grasped by a user,

   wherein the cleaning module comprises:

   a module housing having a mop disposed at a lower side thereof;

   a water tank coupled to the module housing and configured to store water;

   a steam generator configured to heat water introduced from the water tank; and

   an auxiliary battery coupling unit provided on the module housing so that an

   auxiliary battery is inserted into and coupled to the auxiliary battery coupling unit.
2. [Claim 2]

   The cleaner of claim 1, wherein at least a part of the auxiliary battery coupling

   unit is disposed on a rear surface of the module housing.
3. [Claim 3]

   The cleaner of claim 2, wherein the auxiliary battery is inclined downward and

   inserted into the auxiliary battery coupling unit.
4. [Claim 4]

   The cleaner of claim 1, wherein the auxiliary battery comprises:

   an auxiliary battery main body; and

   a coupling button provided on the auxiliary battery main body and configured to

   be coupled to the auxiliary battery coupling unit by a hook engagement, and

   wherein at least a part of the coupling button is exposed to the outside of the

   module housing.
5. [Claim 5]

   The cleaner of claim 4, wherein at least a part of the coupling button is disposed

   upward from the module housing.
6. [Claim 6]

   The cleaner of claim 1, wherein the auxiliary battery is connected in series to the

   battery.
7. [Claim 7]

   The cleaner of claim 1, wherein the auxiliary battery is connected in parallel to

   the battery.
8. [Claim 8]

   The cleaner of claim 1, wherein the auxiliary battery is connected selectively in

   series or in parallel to the battery.
9. [Claim 9]

   The cleaner of claim 1, wherein the auxiliary battery supplies power to the steam

   generator.
10. [Claim 10]

    The cleaner of claim 1, wherein the cleaning module further comprises:

    a mop driving motor disposed in the module housing and configured to provide

    a rotational force to the mop by rotating a motor shaft; and

    a flow path forming part formed in the module housing and configured to

    communicate with an intake port, the flow path forming part being configured to guide

    air, which is introduced through the intake port, to the cleaner main body, and

    wherein an imaginary axial extension line of the motor shaft passes through the

    flow path forming part.
11. [Claim 11]

    The cleaner of claim 1, wherein the auxiliary battery coupling unit comprises an

    auxiliary battery coupling groove that accommodates the auxiliary battery, and

    wherein the auxiliary battery coupling groove is formed in a direction parallel to

    the floor surface from a rear surface of the module housing toward a front side of the

    module housing in a state in which the cleaning module is placed on the floor surface.
12. [Claim 12]

    The cleaner of claim 1, wherein the auxiliary battery coupling unit comprises an

    auxiliary battery coupling groove formed in a direction from the module housing toward

    an inside of the module housing, the auxiliary battery coupling groove being configured

    to accommodate the auxiliary battery, and

    wherein the auxiliary battery coupling groove is formed to be inclined downward

    at a predetermined angle with respect to the floor surface in a state in which the cleaning

    module is placed on the floor surface.
13. [Claim 13]

    The cleaner of claim 1, wherein the cleaning module further comprises a diffuser

    configured to discharge moisture passing through the steam generator to the mop, and

    wherein the diffuser is formed in an annular shape.
14. [Claim 14]

    The cleaner of claim 13, wherein the cleaning module further comprises a mop

    driving motor disposed in the module housing and configured to provide a rotational force

    to the mop by rotating a motor shaft, and

    wherein the mop driving motor is disposed inside the annular diffuser.