Abstract:
A cleaner that includes a nozzle assembly; a cleaner body that is coupled to the nozzle assembly and that is configured to rotate; and a water cleaning device that is coupled to the nozzle assembly, the water cleaning device including: a water tank that is configured to (i) hold a cloth and (ii) store water to provide to the cloth and that includes an air hole through which air enters the water tank from outside of the water tank, and an adjusting device that is configured to open or close the air hole based on a rotation of the cleaner body is disclosed.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims priority to Korean Patent Application No. 10-2016-0006346 filed on Jan. 19, 2016 in Korea, the entire contents of which is hereby incorporated by reference in its entirety. 
       TECHNICAL FIELD 
       [0002]    The present application generally relates to technologies about a cleaner. 
       BACKGROUND 
       [0003]    The cleaner is used to remove a dust or waste for a clean environment. 
         [0004]    The cleaner may be classified into a manual cleaner where the user grips and moves the cleaner, and an automatic cleaner where the cleaner moves on its own. 
         [0005]    Further, the manual cleaner may be classified into a canister type cleaner, an upright type cleaner, a handy type cleaner, a stick type cleaner, etc. 
         [0006]    As a prior art document, Korean Patent application publication No. 2001-0028651 (Apr. 6, 2001) discloses a wet mop having a water injector. 
         [0007]    In this document, the wet mop includes a water tank having a water injecting hole and a water injector; a cylindrical shaft fixed on an upper part of the water case to be rotatable; and an operation knob for actuating the water injector and fixed to an end of the cylindrical shaft. 
         [0008]    However, in this document, only when the user operates the knob, the water injector works. Thus, the user should frequently operate the knob during the cleaning process. This may lead to inconvenience for the user. 
         [0009]    Further, a single knob operation determines the water injection amount. In order to adjust the water injection amount, multiple knob operations are needed. This may lead to inconvenience for the user. 
       SUMMARY 
       [0010]    The present disclosure provides a cleaner having a water cleaning device that is capable of adjusting the amount of water being discharged. 
         [0011]    The present disclosure provides a cleaner where water is prevented from being discharged in a cleaner standby state and the water may be discharged in a cleaning process. 
         [0012]    The present disclosure provides a cleaner where water may be discharged continuously from a water tank in a state where the water may be discharged. 
         [0013]    In general, one innovative aspect of the subject matter described in this specification can be embodied in a cleaner that includes a nozzle assembly; a cleaner body that is coupled to the nozzle assembly and that is configured to rotate; and a water cleaning device that is coupled to the nozzle assembly, the water cleaning device including: a water tank that is configured to (i) hold a cloth and (ii) store water to provide to the cloth and that includes an air hole through which air enters the water tank from outside of the water tank, and an adjusting device that is configured to open or close the air hole based on a rotation of the cleaner body. 
         [0014]    The foregoing and other embodiments can each optionally include one or more of the following features, alone or in combination. In particular, one embodiment includes all the following features in combination. The adjusting device is configured to move, based on the rotation of the cleaner body, between a first position and a second position to open or close the air hole. The adjusting device is configured to (i) move to the first position based on the cleaner body being oriented in an upright orientation and (ii) move to the second position based on rotation of the cleaner body. The adjusting device is configured to (i) close the air hole based on the adjusting device being located in the first position and (ii) open the air hole based on the adjusting device being located in the second position. The cleaner of claim  2 , further includes an elastic member that is configured to maintain the adjusting device in the first position to close the air hole. The adjusting device includes: a transmitting part that is configured to move based on rotation of the cleaner body, a connecting part that couples the transmitting part to the water tank and that is configured to rotate about a first axis based on movement of the transmitting part, and a cover part that is coupled to the connecting part and that is configured to move, based on the rotation of the connecting part, to open or close the air hole. The transmitting part is configured to move without contacting the nozzle assembly. The transmitting part is configured to move between a first transmitting position and a second transmitting position, and wherein, in the first transmitting position, at least a portion of the transmitting part is located at a first side of the cleaner body and is spaced apart from the cleaner body. The water tank includes: an accommodating groove that is configured to accommodate a portion of the cover part and that is located on a first surface of the water tank, and wherein the air hole is located on a first surface of the accommodating groove. The adjusting device includes: a transmitting part including: a first transmitting part that is configured to move based on rotation of the cleaner body, and a plurality of second transmitting parts that are coupled to the first transmitting part and that are configured to move based on movement of the first transmitting part, and a first connecting part and a second connecting part, wherein each of the first connecting part and the second connecting part (i) respectively couples at least one of the plurality of second transmitting parts to the water tank and (ii) is configured to respectively rotate about a first axis based on movement of the at least one of the plurality of second transmitting part. The first connecting part and the second connecting part extend in a first direction, and the plurality of second transmitting parts extend in a second direction that is different from the first direction. The water tank includes: a first water storage part that is configured to store water to provide to the cloth and that is rotatably coupled to the first connecting part, and a second water storage part that is configured to store water to provide to the cloth and that is rotatably coupled to the second connecting part. The nozzle assembly includes: a connecting part that is coupled to the cleaner body, and wherein the connecting part is located between the first water storage part and the second water storage part. The first water storage part includes the air hole, and wherein the first connecting part that is coupled to the first water storage part includes a cover part that is configured to open or close the air hole. The second water storage part includes a second air hole through which air enters the second water storage part from outside of the water tank, and wherein the second connecting part that is coupled to the second water storage part includes a second cover part that is configured to open or close the second air hole. At least one of the first water storage part or the second water storage part includes the air hole, and wherein at least one of the first water storage part or the second water storage part includes a water inlet through which water enters the water tank. 
         [0015]    In general, another innovative aspect of the subject matter described in this specification can be embodied in A cleaner comprising: a nozzle assembly; a water cleaning device that is coupled to the nozzle assembly and that includes: a water tank that is configured to (i) hold a cloth and (ii) store water to provide to the cloth and that includes an air hole through which air enters the water tank from outside of the water tank; and a cleaner body that is coupled to the nozzle assembly, that is configured to rotate, and that includes: an adjusting device that is configured to open or close the air hole based on rotation the cleaner body. 
         [0016]    The foregoing and other embodiments can each optionally include one or more of the following features, alone or in combination. In particular, one embodiment includes all the following features in combination. The adjusting device is configured to move, based on rotation of the cleaner body, between a first position and a second position to open or close the air hole. The adjusting device is configured to (i) move to the first position based on the cleaner body being oriented in an upright orientations and (ii) move to the second position based on rotation of the cleaner body. The cleaner further includes: an elastic member that is configured to maintain the adjusting device in the first position to close the air hole. 
         [0017]    The details of one or more examples of the subject matter described in this specification are set forth in the accompanying drawings and the description below. Other potential features, aspects, and advantages of the subject matter will become apparent from the description, the drawings, and the claim. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]    The present disclosure will become more fully understood from the detailed description given herein below and the accompanying drawings, which are given by illustration only, and thus are not limitative of the present disclosure, and wherein: 
           [0019]      FIG. 1  is a perspective view of a cleaner according to an embodiment of the present disclosure; 
           [0020]      FIG. 2  is a view illustrating a water cleaning device coupled to a nozzle assembly according to an embodiment of the present disclosure; 
           [0021]      FIG. 3  is a bottom view of the nozzle assembly according to an embodiment of the present disclosure; 
           [0022]      FIG. 4  is a perspective view of the water cleaning device according to an embodiment of the present disclosure; 
           [0023]      FIG. 5  is a view illustrating a lower side structure of a water tank according to an embodiment of the present disclosure; 
           [0024]      FIG. 6  is an exploded perspective view of the water cleaning device according to an embodiment of the present disclosure; 
           [0025]      FIG. 7  is a cross-sectional view of  FIG. 4 , taken along line A-A; 
           [0026]      FIG. 8  is a cross-sectional view of  FIG. 4 , taken along line B-B; 
           [0027]      FIG. 9  is a view illustrating a state where a cleaner body is rotated in one direction; and 
           [0028]      FIG. 10  is a view illustrating a state where an adjusting device is rotated to open an air hole. 
       
    
    
     DETAILED DESCRIPTION 
       [0029]    Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. 
         [0030]    In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific preferred embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is understood that other embodiments may be utilized and that logical structural, mechanical, electrical, and chemical changes may be made without departing from the spirit or scope of the invention. To avoid detail not necessary to enable those skilled in the art to practice the invention, the description may omit certain information known to those skilled in the art. The following detailed description is, therefore, not to be taken in a limiting sense. 
         [0031]    Also, in the description of embodiments, terms such as first, second, A, B, (a), (b) or the like may be used herein when describing components of the present invention. Each of these terminologies is not used to define an essence, order or sequence of a corresponding component but used merely to distinguish the corresponding component from other component(s). It should be noted that if it is described in the specification that one component is “connected,” “coupled” or “joined” to another component, the former may be directly “connected,” “coupled,” and “joined” to the latter or “connected”, “coupled”, and “joined” to the latter via another component. 
         [0032]      FIG. 1  is a perspective view of a cleaner according to an embodiment.  FIG. 2  shows an enlarged partial view of a combination between a water cleaning device and a nozzle assembly of the cleaner according to the embodiment. 
         [0033]    Referring to  FIG. 1  and  FIG. 2 , the cleaner  1  according to the embodiment may include a nozzle assembly  20  to suction a dust from a floor, and a cleaner body  10  rotatably coupled to the nozzle assembly  20 . 
         [0034]    The cleaner body  10  may exist in a stand up state (the cleaner body disposed at a first position) in a storage state or in a cleaner standby state, and when cleaning, the cleaner body  10  may be rotated about the nozzle assembly  20  by the user to be disposed at a second position. In this document, the second position is not a certain point but a position within a range where the cleaner body may be rotated by the user. 
         [0035]    The nozzle assembly  20  may allow the dust suctioned therein to flow into the cleaner body  10 . 
         [0036]    The cleaner  1  may further include a cleaning unit  30  removably coupled to the cleaner body  10 . 
         [0037]    The cleaning unit  30  may include a body  32  having a suction motor, and a dust collection unit  31  removably coupled to the body  32  to collect the dust separated from the air. 
         [0038]    The dust collection unit  31  may include an air inlet  31   a  to receive an air from the cleaner body  10 . The cleaner body  10  may have an air-communication unit  12  communicating with the air inlet  31   a . The air-communication unit  12  may be disposed at a portion on which the air inlet  31   a  is mounted. 
         [0039]    The dust collection unit  31  may include a cover to open or close the air inlet  31   a . The cover may open the air inlet  31   a  under a suction force of the suction motor. To the contrary, when the suction motor is not activated, the cover may close the air inlet  31   a.    
         [0040]    Thus, when the suction motor is not activated, the cover closes the air inlet  31   a , to prevent the dust in the dust collection unit  31  from being discharged out of the air inlet  31   a.    
         [0041]    The body  32  may have an air outlet  33  to allow the air passing through the suction motor to be discharged out of the body  32 . Further, the body  32  may have a handle  34  at an upper position thereof. 
         [0042]    The cleaning unit  30  may further include a battery to supply a power to the suction motor. 
         [0043]    Thus, when the cleaning unit  30  is removed from the cleaner body  10 , the user may perform cleaning using the cleaning unit  30 . 
         [0044]    Further, when the cleaning unit  30  is mounted on the cleaner body  10 , the suction motor may be activated. 
         [0045]    The cleaner body  10  may have a body handle  11 . Around the body handle  11 , a control unit  112  may be disposed. The user may control the suction motor in the cleaning unit  30  using the control unit  112 . 
         [0046]    The nozzle assembly  20  may include a nozzle body  21 , and a connection  22  extending from the nozzle body  21  and rotatably coupled to the cleaner body  10 . 
         [0047]    The connection  22  may, for example, extend rearwards in a rear of the nozzle body  21 . 
         [0048]    A water cleaning device  40  may be coupled to the nozzle assembly  20 . 
         [0049]    The water cleaning device  40  may include a water tank  41 , and a cloth  50  attached to the water tank  41 . The water tank  41  may supply water to the cloth  50  to allow the cloth  50  to be wet with water to remove the floor dust. 
         [0050]    The cloth  50  may be attached to the water tank  41  at a bottom thereof via adhering means ( 490  in  FIG. 5 ) such as Velcro. The adhering means to attach the cloth  50  to the water tank  41  may not be limited thereto. 
         [0051]    In this embodiment, as long as the water tank  41  is attached to the nozzle assembly  20 , a structure of the nozzle assembly  20  and/or a presence/absence the cleaning unit  30  are not limited specifically. 
         [0052]    Alternatively, the water tank  41  is not coupled to the cleaner but has a stick coupled to the water cleaning device  40  to clean the floor using the cloth of the water cleaning device  40 . 
         [0053]    The water cleaning device  40  may be disposed under the nozzle assembly  20 . The water cleaning device  40  may be at least partially disposed outside the nozzle assembly  20  when coupled to the nozzle assembly  20 . 
         [0054]    That is, as shown in  FIG. 2 , the water cleaning device may be partially disposed under the nozzle body  21  to be overlapped with the nozzle body  21 . The water cleaning device  40  may be partially disposed under the connection  22  to be overlapped with the connection  22 . Further, the water tank  41  may be partially disposed not to be overlapped with both the nozzle body  21  and the connection  22 . 
         [0055]    Thus, using this embodiment, when the water cleaning device  40  is coupled to the nozzle assembly  20 , the water cleaning device  40  is partially disposed outside the nozzle assembly  20  to allow a contact area between the cloth  50  and water tank  41  to increase. This may lead to an increase in the contact area between the cloth  50  and floor. 
         [0056]    Using this embodiment, at a single time cleaning operation, the cloth  50  may remove the dust from a larger area on the floor. 
         [0057]    Further, when the user puts one foot on a portion of the water cleaning device  40  outside the nozzle assembly  20 , the user may lift up the cleaner  1  to allow the water cleaning device  40  to be removed from the nozzle assembly  20 . Thus, the user may remove the water cleaning device  40  from the cleaner  1  easily. The water cleaning device  40  need not have a separate structure in order to be removed. 
         [0058]    Further, when the water cleaning device  40  contacts with the nozzle assembly  20 , the contact area between the cleaner and floor area increases, to allow the cleaner to stand up on the floor area more stably in the cleaner standby mode. 
         [0059]    The water cleaning device  40  may be coupled to the nozzle body  21  and/or the connection  22 . 
         [0060]    The connection  22  may have one or more rear wheels  23  to allow the nozzle assembly  20  to move easily. 
         [0061]      FIG. 3  is a bottom view of the nozzle assembly according to the embodiment and  FIG. 4  is a perspective view of the water cleaning device according to the embodiment. 
         [0062]    Referring to  FIG. 3  and  FIG. 4 , the nozzle body  21  may have an air inlet  212 . 
         [0063]    Further, the nozzle body  21  may have one or more front wheels  214  to move the nozzle assembly  20 . 
         [0064]    That is, the nozzle assembly  20  may have a plurality of wheels  23  and  214 . The plurality of wheels  23  and  214  may include one or more front wheels  214  disposed at the nozzle body  21 , and one or more rear wheels  23  disposed at the connection  22 . 
         [0065]    In order for the nozzle assembly  20  to move stably, a plurality of front wheels  214  may be disposed at the nozzle body  21 . The plurality of front wheels  214  may be spaced from each other in a left and right direction. 
         [0066]    In order to prevent the water cleaning device  40  from blocking the air inlet  212 , the water cleaning device  40  may be disposed in a rear of the air inlet  212 . Further, in order to prevent interference between the water cleaning device  40  and the plurality of wheels  23  and  214 , the water cleaning device  40  may be disposed in a rear of the front wheel  214  and in a front of the rear wheel  23 . 
         [0067]    That is, when the water cleaning device  40  is coupled to the nozzle assembly  20 , the water cleaning device  40  may be disposed between the front wheel  214  and the rear wheel  23 . Further, the water cleaning device  40  may be disposed between the air inlet  212  and the rear wheel  23 . 
         [0068]    The water tank  41  may include a tank body  410  and a base  470  coupled to a lower side of the tank body  410 . 
         [0069]    The water tank  41  forms one or more water storage parts  411  and  412 . In  FIG. 4 , a case where the water tank  41  includes a first water storage part  411  and a second water storage part  412  is disclosed as an example, but the number of water storage parts  411  and  412  is not limited in the present disclosure. The one or more water storage parts  411  and  412  form a water storage space. 
         [0070]    A space  414  in which the connection  22  of the nozzle assembly  20  is located is formed in the tank body  410 . Although not limited, the space  414  may be located between the water storage parts  411  and  412 . 
         [0071]    Thus, if the water cleaning device  40  is coupled to the nozzle assembly  20 , the tank body  410  can support the connection  22 . 
         [0072]    The water tank  41  may further include a coupling device for allowing the water tank  41  to be coupled to the nozzle assembly  20 . 
         [0073]    The coupling device may include a first coupling part  471  or  472  for allowing the coupling device to be coupled to the nozzle body  21 . 
         [0074]    The first coupling part  471  or  472 , although not limited, may protrude upward from the base  470 . In order for the water tank  41  to be firmly coupled to the nozzle body  21 , a plurality of first coupling parts  471  and  472  may be provided at the base  470 . The plurality of first coupling parts  471  and  472  may be disposed to be spaced apart from each other in the left-right direction. 
         [0075]    The nozzle body  21  may include an accommodating part  220  in which the first coupling part  471  or  472  is accommodated. The accommodating part  220  may be formed as the bottom of the nozzle body  21  is recessed upward. 
         [0076]    When the plurality of first coupling part  471  or  472  are provided in the water tank  41 , a plurality of accommodating parts  220  may be provided in the nozzle body  21 . In this case, the plurality of accommodating parts  220  may also be spaced apart from each other in the left-right direction. 
         [0077]    The nozzle body  21  may include a hook member  230  coupled to the first coupling part  471  or  472  in a state in which the first coupling part  471  or  472  is accommodated in the accommodating part  220 . 
         [0078]    The hook member  230  may be fixed to the nozzle body  21 , and at least a portion of the hook member  230  may protrude to the accommodating part  220 . 
         [0079]    In the process in which the first coupling part  471  or  472  is accommodated in the accommodating part  220 , if the hook member  230  is elastically deformed by the first coupling part  471  or  472  and then aligned with a hook accommodating part of the first coupling part  471  or  472 , the hook member  230  may be accommodated in the hook accommodating part of the first coupling part  471  or  472 . 
         [0080]    The coupling device may further include a second coupling part  413  for allowing the coupling device to be coupled to the connection  22 . 
         [0081]    The second coupling part  413  may be formed at the tank body  410 . At this time, since the connection  22  is located between the two water storage parts  411  and  412 , the second coupling part  413  may be formed at each of the water storage parts  411  and  412 . As an example, the second coupling part  413  may be formed at surfaces of the water storage parts  411  and  412 , which are opposite to each other. 
         [0082]    If the connection  22  is located between the two water storage parts  411  and  412 , the second coupling part  413  may be held to a top surface of the connection  22 . 
         [0083]    In this embodiment, as the water storage parts  411  and  412  are located at both sides of the connection  22 , respectively, the nozzle assembly  20  can be prevented from being separated from the water tank  41  in a process of moving the nozzle assembly  20  to the left or right. 
         [0084]      FIG. 5  is a view illustrating a lower side structure of the water tank according to an embodiment of the present disclosure, and  FIG. 6  is an exploded perspective view of the water cleaning device according to an embodiment of the present disclosure. 
         [0085]      FIG. 7  is a cross-sectional view of  FIG. 4 , taken along line A-A, and  FIG. 8  is a cross-sectional view of  FIG. 4 , taken along line B-B. 
         [0086]    Referring to  FIGS. 4 to 8 , the tank body  410  may further include a water inlet  416  through which water may be introduced. 
         [0087]    The water inlet  416  may be opened and closed by a water inlet cover  420 . The water inlet  416  may be provided in the first water storage part  411 , but there is no limitation thereto. 
         [0088]    The base  470  may have an opening  473 . A discharging part  480  for discharging water may be coupled to the opening  473 . 
         [0089]    The discharging part  480  may include one or more discharging holes  482 . In another example, the discharging part  480  may be removed, and the opening  473  may serve as the discharging part. 
         [0090]    Water stored in the water tank  41  may be supplied to the cloth  50  through the discharging hole  482 . 
         [0091]    On a lower surface of the base  470 , one or more attachment means  490  may be coupled to allow the cloth  50  to be attached. 
         [0092]    Meanwhile, the water tank  41  may further include an adjusting device  460  for adjusting introduction of air into the water tank  41 . 
         [0093]    The adjusting device  460  may allow or block communication between the inner space and the outer space of the water tank  41 . 
         [0094]    Here, when the communication between the inner space and the outer space of the water tank  41  is blocked by the adjusting device  460 , the inner space of the water tank  41  may go into a state identical or similar to vacuum pressure, thereby preventing water from being discharged from the discharging hole  482 . 
         [0095]    On the other hand, when the inner space and the outer space of the water tank  41  is allowed to communicate by the adjusting device  460 , the pressure of the inner space of the water tank  41  may become identical or similar to atmospheric pressure, enabling smooth discharge of water from the discharging hole  482 . 
         [0096]    Specifically, the tank body  410  is provided with an air hole  430  for air to be introduced into the tank body  410 . The air hole  430  may be provided in the second water storage part  412 , but there is no limitation thereto. Alternatively, the air hole  430  may be provided in the first water storage part  411 , or the air hole  430  may be provided in each of the first water storage part  411  and the second water storage part  412 . 
         [0097]    The adjusting device  460  may be rotatably coupled to the tank body  410 . Depending on the rotating position of the adjusting device  460 , the adjusting device  460  may open or close the air hole  430 . 
         [0098]    The adjusting device  460  may include a connecting part  461  or  462  rotatably connected to the tank body  410 , and a transmitting part  465  or  466  that receives a rotational force of the cleaner body  10  in the process where the cleaner body  10  rotates in one direction. 
         [0099]    The connecting part  461  or  462  may be rotatably connected to the tank body  410  by a hinge  463 . Here, the tank body  410  may be provided with a hinge coupling part  418  to which the hinge  463  may be coupled. 
         [0100]    The connecting part  461  or  462  may be coupled to a cover part  464  that opens and closes the air hole  430 . 
         [0101]    Here, the adjusting device  460  may include a plurality of connecting parts  461  and  462  so that the adjusting device  460  rotates stably and is prevented from being deformed in the rotation process, and the transmitting part  465  or  466  may connect the plurality of connecting parts  461  and  462 . Of course, the adjusting device  460  may include only one connecting part  462 . 
         [0102]    For example, the adjusting device  460  may include a first connecting part  461  rotatably coupled to the first water storage part  411 , and a second connecting part  462  rotatably coupled to the second water storage part  412 . 
         [0103]    Further, one or more of the first connecting part  461  and the second connecting part  462  may be coupled to the cover part  464 . 
         [0104]    Here, for the adjusting device  460  to receive the rotational force of the cleaner body  10  in the process where the cleaner body  10  rotates in one direction, the transmitting part  465  or  466  may be disposed on a rotation route of the cleaner body  10 . 
         [0105]    For example, the transmitting parts  465  and  466  may include a plurality of first transmitting parts  465  bend-connected to each connecting part  461  or  462 , and one or more second transmitting parts  466  that may connect the plurality of first transmitting parts  465  and contact the cleaner body  10 . 
         [0106]    Here, for the adjusting device  460  to receive the rotational force of the cleaner body  10 , at least a portion of the adjusting device  460  may be arranged such that it is not overlapped with the nozzle assembly  20  in an up and down direction. 
         [0107]    For example, the connecting part  461  or  462  is arranged such that at least a portion thereof is overlapped with the nozzle assembly  20  in an up and down direction, and the transmitting part  465  or  466  is arranged such that at least a portion thereof is not overlapped with the nozzle assembly  20  in an up and down direction. 
         [0108]    The water cleaning device  40  may further include an elastic member  458  that provides elastic force to the adjusting device  460  so that the state where the adjusting device  460  has closed the air hole  430  may be maintained when the cleaner body  10  is in a stand up state. 
         [0109]    Therefore, in a state where the rotational force is not transmitted from the cleaner body  10  to the adjusting device  460 , the state where the cover part  464  of the adjusting device  460  has closed the air hole  430  may be maintained by the elastic force of the elastic member  458 . 
         [0110]    In the tank body  410 , an accommodating groove  432  for accommodating a portion of the cover part  464  may be formed, and the air hole  430  may be formed at a bottom of the accommodating groove  423 , but there is no limitation thereto. 
         [0111]    For example, the accommodating groove  462  may be formed on an upper surface of the tank body  410 . 
         [0112]    Therefore, in a state where the cover part  464  of the adjusting device  460  has closed the air hole  430 , the connecting part  461  or  462  may extend in a front and rear direction of the nozzle assembly  20 , the first transmitting part  465  may extend in an up and down direction, and the second transmitting part  466  may extend in a left and right direction of the nozzle assembly  20 . 
         [0113]    Hereinafter, actions of the adjusting device will be explained. 
         [0114]      FIG. 9  is a view illustrating a state where the cleaner body is rotated in one direction, and  FIG. 10  is a view illustrating a state where the adjusting device is rotated to open the air hole. 
         [0115]    First of all, referring to  FIG. 1 ,  FIG. 7  and  FIG. 8 , when the cleaner body  10  is in a stand up state, the state where the adjusting device  460  is spaced apart from the cleaner body  10 , and the adjusting device  460  has closed the air hole  430  may be maintained. 
         [0116]    For example, the transmitting part  465  or  466  may be disposed at a rear side of the cleaner body  10 , and spaced apart from the cleaner body  10 . 
         [0117]    Alternatively, when the cleaner body  10  is in a stand up state, the adjusting device  460  may contact the cleaner body  10 , and the state where the adjusting device  460  has closed the air hole  430  may be maintained. 
         [0118]    In the state where the air hole  430  is closed, air is prevented from being introduced from outside into the water tank  41  through the air hole  430 . 
         [0119]    In this case, the inner space of the water tank  41  may go into a state identical or similar to vacuum pressure, thereby preventing the water from being discharged from the discharging hole  482 . 
         [0120]    When the cleaner body  10  is in a stand up state as aforementioned, water is prevented from being discharged from the water tank  41 , and thus in a cleaner standby state, water may be prevented from being unnecessarily discharged from the water tank  41 . 
         [0121]    When water is prevented from being unnecessarily discharged from the water tank  41 , a period of time where the water stored in the water tank  41  may be used increases, thereby reducing the number of times water needs to be filled in the water tank  41 . 
         [0122]    Meanwhile, referring to  FIG. 9  and  FIG. 10 , when the cleaner body  10  rotates in one direction, rotational force of the cleaner body  10  is transmitted to the adjusting device  460 , thereby rotating the adjusting device  460  in one direction. 
         [0123]    Then, the cover part  464  of the adjusting device  460  is spaced apart from the air hole  430 , thereby opening the air hole  430 . When the air hole  430  opens, air may be introduced into the water tank  41  through the air hole  430 , and thus the inner pressure of the water tank  41  becomes identical or similar to atmospheric pressure, thereby discharging water from the discharging hole  482 . 
         [0124]    The water discharged from the discharging hole  482  is supplied to the cloth  50  so that the cloth  50  absorbs the water. 
         [0125]    Therefore, the user may clean a floor surface using the cloth  50  that absorbed the water. 
         [0126]    According to the present disclosure, the air hole is closed in a cleaner standby state, thereby preventing water from being discharged from the water tank unintentionally. 
         [0127]    Further, according to the present disclosure, without having to manually manipulate the adjusting device, when the user rotates the cleaner body to clean, the adjusting device rotates, thereby opening the air hole. Therefore, there is an advantage of improved user convenience. 
         [0128]    Further, in the cleaning process, water may be discharged from the water tank continuously without any additional manipulation by the user. 
         [0129]    Further, even when the water cleaning device is separated from the nozzle assembly, the state where the adjusting device has closed the air hole is maintained, thereby preventing water from being discharged from the water tank. 
         [0130]    Although it was explained in the aforementioned embodiment that the adjusting device is rotatably connected to the water tank, the adjusting device may be provided in the cleaner body  10  instead. 
         [0131]    For example, the air hole may be formed at a side surface of one of the first water storage part and the second water storage part, and the adjusting device provided in the cleaner body  10  may open or close the air hole depending on the position of the cleaner body  10 . The adjusting device may be an exterior part of the cleaner body. 
         [0132]    Alternatively, the adjusting device may protrude from the cleaner body, and a groove for accommodating the adjusting device may be formed in the water tank, and the air hole may be disposed in the groove.