Patent Publication Number: US-9883780-B2

Title: Cleaning member and cleaner having the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of Korean Patent Application No. 10-2014-0027399, filed on Mar. 7, 2014, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. 
     BACKGROUND 
     1. Field 
     Embodiments of the present disclosure relate to a cleaning member and a cleaner having the same, and more particularly, to a cleaning member provided with a compact structure and a cleaner having the same. 
     2. Description of the Related Art 
     A cleaner represents an appliance designed to facilitate cleaning, and general examples of the cleaner may include a vacuum cleaner for collecting foreign substances using a suction force generated by a motor and a cleaner for mopping the floor. 
     In general, a vacuum cleaner includes a head unit configured to come into close contact with a surface that is to be cleaned, and a body configured to generate a suction force, such that foreign substances on the surface to be cleaned are suctioned by a suction force. 
     Meanwhile, the cleaner for mopping the floor is not provided with an apparatus for generating a suction force, but has dust clothes mounted at a head unit thereof, to mop foreign substances on a surface to be cleaned by repeatedly moving back and forth. 
     When the vacuum cleaner is used separately from the cleaner for mopping the floor, the cleaning process is complicated, and cumbersome to a user. 
     SUMMARY 
     Therefore, it is an aspect of the present disclosure to provide a cleaning member capable of improving a cleaning efficiency and a cleaner having the same. 
     It is another aspect of the present disclosure to provide a cleaning member having a compact structure, and a cleaner having the same. 
     Additional aspects of the disclosure will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the disclosure. 
     In accordance with one aspect of the present disclosure, a cleaner includes a cleaner body, a head unit and a cleaning member. The cleaner body may be provided with a driving part configured to generate a suction force. The head unit may be connected to the cleaner body and configured to come into close contact with a surface to be cleaned by allowing external air to be introduced thereinto by the suction force of the driving part. The cleaning member may be detachably provided on the head unit. The cleaning member may include a member body detachably coupled to the head unit and having a floor cleaning part making contact with the surface to be cleaned, and a dust collecting container extending from the member body and configured to filter out foreign substances from air that is suctioned into the head unit. 
     The dust collecting container may include a container body provided at an inside the head unit and having a dust collecting space in which foreign substances are collected, to perform filtering on air introduced into the head unit; and an inlet part configured to form an opening through which air is introduced into the dust collecting space, the inlet part formed at an end portion of the container body. 
     The head unit may include a head body provided at an inside thereof with an inner space, and the container body may be disposed in the inner space of the head unit by the suction force of the driving part. 
     The head unit may include a bottom surface that comes into close contact with the floor cleaning part; and an entry part provided on the bottom surface and allowing air to be introduced therethrough by the driving part. 
     At least one portion of the dust collecting container may be introduced by the suction force of the driving part and disposed inside the head unit. 
     The dust container may be integrally formed with a front side of the member body. 
     The cleaning member may further include a backflow preventing rib that extends from the member body and movably provided between an opening position at which the opening is opened and a closing position at which the opening is closed depending on generation of the suction force by the driving part. 
     The head unit may include an entry part allowing external air to be introduced therethrough by the suction force of the driving part and having the opening of the dust collecting container positioned thereon; and a backflow preventing unit provided adjacent to the entry part and configured to move back and forth to open and close the entry part and the opening. 
     The head unit may include an entry part allowing external air to be introduced therethrough by the suction force of the driving part; and a backflow preventing protrusion adjacent to the entry part and configured to be projected inward the head unit to confine one side of the opening when the driving part stops generating the suction force and the container body is inclined due to deadweight. 
     The cleaning member may further include an inside cleaning member provided inside the member body to absorb moisture. 
     The cleaning member may further include an inlet fixing part configured to allow at least one portion of the inlet part to be fixed such that the opening is kept open, the inlet fixing part extending from the inlet part. 
     One side of the inlet part may be fixed as the member body integrally formed with the inlet part is attached to the head unit, and the other side of the inlet part may be fixed as the inlet fixing part is fixed to a front surface of the head unit, so that the opening of the inlet part is kept open. 
     The head unit may include a mounting part on which the inlet fixing part is mounted; and a fixing part provided on the mounting part, the fixing part formed of elastic member and radially being slit to act an elastic force such that at least one portion of the inlet fixing part is introduced into the fixing part and prevented from being randomly separated. 
     The head unit may include a fixing cover configured to primarily cover the fixing part and secondarily fix the inlet fixing part. 
     The cleaner may further include a joint part allowing the bottom surface of the head unit to be parallel to the surface to be cleaned when the cleaner body operates, wherein the joint part includes a flexible tube forming the external appearance of the joint part and provided to be deformable; a plurality of joints provided in the flexible tub and allowing the head unit to perform a joint movement with respect to the body, wherein a flow path is provided between the flexible tube and the plurality of joints to allow the air suctioned by the driving part to move therealong. 
     The cleaner body may further include an exit part allowing the air introduced from the head unit to be discharged, wherein the entry part, the dust collecting container, the driving part and the exit part may be sequentially disposed in a flow direction of air introduced from outside. 
     In accordance with another aspect of the present disclosure, a cleaning member detachably provided on a cleaner provided with a head unit configured to suction air includes: a member body detachably provided on the head unit and making contact with a surface to be cleaned; and a dust collecting container extending from the member body and provided in a pocket shape to filter out foreign substances introduced to the inside of the cleaner. The dust collecting container may be integrally formed with a front surface of the member body. 
     The dust collecting container may include: an inlet part provided on the dust collecting container to form an opening that allows air to be introduced to the inside of the dust collecting container; and an inlet fixing part configured to allow at least one portion of the inlet part to be fixed such that the opening is kept open, the inlet fixing part extending from the inlet part. 
     In accordance with another aspect of the present disclosure, a cleaner includes a cleaner body provided with a driving part configured to generate a suction force; a head unit including a head body having an inner space therein and a bottom surface provided on an outer surface of a bottom of the head body, the head unit provided to perform a joint movement with respect to the cleaner body and coming into close contact with a surface to be cleaned; and a cleaning member detachably provided on the head unit to clean the surface to be cleaned, wherein the cleaning member may include a bottom cleaning part making contact with the surface to be cleaned; and a dust collecting container provided adjacent to the bottom cleaning part at an inside of the head unit to filter out foreign substances of external air introduced by the suction force of the driving part. 
     As is apparent from the above, the cleaning member according to the present disclosure and the cleaner having the same can suction foreign substance on a surface to be cleaned and also perform a wet cleaning. 
     In addition, the cleaning member according to the present disclosure and the cleaner have the same can be provided with a compact structure and thus easily stored, thereby ensuring convenience of a user and providing an aesthetic design. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and/or other aspects of the disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which: 
         FIGS. 1 and 2  are perspective views illustrating a cleaner in accordance with the first embodiment of the present disclosure. 
         FIG. 3  is a cross-sectional view illustrating the cleaner in accordance with the first embodiment of the present disclosure. 
         FIG. 4  is an exploded perspective view illustrating the cleaner in accordance with the first embodiment of the present disclosure. 
         FIG. 5  is a cross-sectional view illustrating a head unit of the cleaner in accordance with the first embodiment of the present disclosure. 
         FIG. 6  is an enlarged perspective view illustrating a joint part of the cleaner in accordance with the first embodiment of the present disclosure. 
         FIG. 7  is a perspective view illustrating a cleaning member in accordance with the first embodiment of the present disclosure. 
         FIG. 8  is an exploded view illustrating the cleaning member in accordance with the first embodiment of the present disclosure. 
         FIGS. 9A, 9B and 9C  are drawings showing an operation of the cleaning member according to operation of the cleaner in accordance with the first embodiment of the present disclosure. 
         FIGS. 10A to 10F  are drawings showing a state of the cleaning member being coupled to the cleaner in accordance with the first embodiment of the present disclosure. 
         FIG. 11  is a perspective view showing a cross section of a head unit and a backflow preventing unit in accordance with the second embodiment of the present disclosure. 
         FIGS. 12A and 12B  are drawings showing an operation of the backflow preventing unit according to operation of the cleaner in accordance with the second embodiment of the present disclosure. 
         FIG. 13  is a perspective view showing a cross section of a head unit and a backflow preventing protrusion in accordance with the third embodiment of the present disclosure. 
         FIGS. 14A and 14B  are drawings illustrating the backflow preventing protrusion and the dust collecting container according to operation of the cleaner in accordance with the third embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. 
       FIGS. 1 and 2  are perspective views illustrating a cleaner in accordance with the first embodiment of the present disclosure,  FIG. 3  is a cross-sectional view illustrating the cleaner in accordance with the first embodiment of the present disclosure, and  FIG. 4  is an exploded perspective view illustrating the cleaner in accordance with the first embodiment of the present disclosure. 
     A cleaner  1  according to the first embodiment of the present disclosure includes a cleaner body  10  and a head unit  30 . 
     The cleaner body  10  forms a structure of the cleaner  1 , and is provided in an approximate rod shape. The cleaner body  10  may include a handle grip  11 , a cleaning rod  12  and a driving part  14 . 
     The cleaner body  10  is provided with the handle grip  11  allowing a user to manipulate the cleaner  1 . A button part  11   a  is provided on the handle grip  11  to adjust on/off or suction power of the cleaner  1 . 
     The driving part  14  may be provided inside the cleaner body  10 , and include a motor  15  and a driving fan  16 . The driving part  14  is configured to generate a suction force for suctioning outside air. In detail, the motor  15  rotates a driving shaft  17  by using electric energy, and the driving shaft  17  is connected to the center portion of the driving fan  16  to suction outside air of the cleaner  1  according to rotation of the driving fan  16 . 
     The cleaner rod  12  is provided in a shape approximate to that of the cleaner body  10 . The cleaner rod  12  is provided to connect the handle grip  11  to the driving part  14 . Although not shown in the drawings, the cleaner rod  12  is provided to have a length thereof varied. 
     The cleaner body  10  is provided with a battery  18  and a controller  19  therein. 
     The controller  19  is provided to control the cleaner  1  using an electric signal related to an operation of the cleaner body  10 . The battery  18  is connected to the controller  19  or the driving part  14 , to supply the cleaner  1  with electric energy. 
     A charging port  20  may be provided on the cleaner body  10 . That is, the battery  18  may be supplied with electric energy as the charging port  20  is connected to an external power source through a charging cable, so that the cleaner  1  is able to operate through charging without needing an electric cord. 
     An operation display part is formed on the cleaner body  10 , and when the cleaner  1  operates, the operation state is visually viewed from outside such that the current operation state is identified and also aesthetic quality is improved. 
     The cleaner body  10  is provided with an exit part  24  allowing the introduced air to be discharged. That is, the exit part  24  is an element corresponding to an entry part  35  of the head unit  30  that will be described later. The exit part  24  is provided to allow air that is introduced through the entry part  35  to be discharged to the outside therethrough after foreign substances are filtered by a dust collecting container  70  or a filter member  26 . 
     The exit part  24  may include a main exit part  24   a  and a subsidiary exit part  24   b . The main exit part  24   a  is provided on the driving part  14  to discharge air suctioned to the inside of the cleaner body  10  by the driving fan  16 . The main exit part  24   a  is formed along the driving part  14 , and provided at a downstream side on an air flow path when compared to the driving fan  16 . 
     The subsidiary exit part  24   b  is provided to discharge air introduced to the inside of the cleaner body  10  by the driving fan  16  in cooperation with the main exit part  24   a . The subsidiary exit part  24   b  is provided to discharge air that fails to be discharged through the main exit part  24   a  and remains, thereby improving the suction force of the cleaner body  10 . 
     In addition, the subsidiary exit part  24   b  is provided to dissipate heat of the controller  19 . The subsidiary exit part  24   b  is disposed on an upper side of the controller  19 , that is, at a downstream side on an air flow path passing the controller  19 , thereby dissipating heat generated from the controller  19 . 
     The cleaner body  10  is provided on the air flow path, and is provided with the filter member  26  that is configured to filter fine dust that is not caught by the dust collecting container  70  which will be described later. 
     The filter member  26  is provided at an upstream side on the air flow path when compared to the driving part  14  to prevent foreign substances from being accumulated on the driving part  14 . In addition, the filter member  26  serves to additionally filter foreign substance, thereby allowing cleaner air to be discharged through the exit part  24 . The type of the filter member  26  is not limited, and the filter member  26  according to the first embodiment of the present disclosure may include a high efficiency particulate arresting (HEPA) filter. 
       FIG. 5  is a cross sectional view illustrating a head unit of the cleaner in accordance with the first embodiment of the present disclosure, and  FIG. 6  is an enlarged perspective view illustrating a joint part of the cleaner in accordance with the first embodiment of the present disclosure. 
     The cleaner  1  includes the head unit  30  that is configured to come into close contact with the surface to be cleaned. 
     The head unit  30  is connected to a joint part  40  that will be described later, so as to be disposed in various directions. In detail, the head unit  30  may perform yaw, pitch and roll movements with respect to the cleaner body  10  through the joint part  40 . 
     The head unit  30  includes a head body  32  having an inner space  32   a  therein, a bottom surface  34 , formed on a lower surface of the head body  32  and having a cleaner member  50 , which will be described later, attached thereto, and an entry part  35  provided at a lower side of the head body  32  and allowing outside air to be introduced through the suction force of the driving part  14 . 
     The bottom surface  34  is provided with an approximate flat surface, and disposed to face the surface to be cleaned. The bottom surface  34  may be provided with an attachment member  34   a  to which the cleaning member  50  is attached. The attachment member  34   a  is provided in various configurations as long as the cleaning member  50  is attached to the attachment member  34   a . The attachment member  34   a  according to the first embodiment of the present disclosure may be provided using a Velcro tape. The cleaning member  50  is formed of felt, and a member body  52  is fixed to the head unit  30  by the Velcro tape. 
     The entry part  35  is provided at a lower side of the head body  32  such that outside air is introduced through the entry part  35 . Although the entry part  35  according to the first embodiment of the present disclosure is provided on the bottom surface  34  and disposed at a front side of the head unit  30 , the disposition of the entry part  35  is not limited thereto. 
     The entry part  35  is provided to correspond to the dust collecting container  70  of the cleaning member  50  that will be described later. The entry part  35  is provided such that foreign substances contained in outside air introduced through the entry part  35  are filtered by the dust collecting container  70  in the inner space  32   a  of the head body  32 . 
     The entry part  35  has a shape corresponding to the bottom surface  34 , and is disposed at a front side of the bottom surface  34 . That is, foreign substances having a predetermined size or above are suctioned through the entry part  35 , and foreign substances that remain without being suctioned are wiped by a bottom cleaning part  60  disposed on the bottom surface  34 . To this end, the entry part  35  may be provided in a longitudinal shape corresponding to that of the bottom surface  34 . 
     The cleaner  1  may include the joint part  40  allowing the head unit  30  to perform a joint movement with respect to the cleaner body  10 . The head unit  30  is provided to perform yaw, pitch and roll movements with respect to the cleaner body  10  through the joint part  40 . 
     The joint part  40  may include a plurality of joints and a flexible tube  44 . 
     The plurality of joints may include an upper joint  41  and a lower joint  42 . The upper joint  41  is connected to the cleaner body  10 , and the lower joint  42  is connected to the head unit  30 . The upper joint  41  is connected to the lower joint  42  through a middle joint  43 . 
     The flexible tube  44  is provided to prevent the plurality of joints from being exposed to the outside, and allows the head unit  30  to operate while bending in various directions. 
     A flow path  45  is formed between the flexible tube  44  and the plurality of joints to allow air introduced from outside to pass therethrough. As for the cleaner according to the present disclosure, the dust collecting container  70  configured to filter out foreign substance of air introduced from outside is disposed at an upstream side when compared to the joint part  40 , so that the joint part  40  and the flow path  45  may be disposed together. Accordingly, the aesthetic quality is improved and a simpler configuration is achieved. In addition, the entry part  35 , the dust collecting container  70 , the driving part  14  and the exit part  24  are sequentially disposed in the flow direction of air introduced from outside, and thus a flow path of the air is minimized, thereby maximizing the suction efficiency. 
       FIG. 7  is a perspective view illustrating a cleaning member in accordance with the first embodiment of the present disclosure, and  FIG. 8  is an exploded view illustrating the cleaning member in accordance with the first embodiment of the present disclosure. 
     The cleaning member  50  is attached to a lower portion of the head unit  30  to clean the surface to be cleaned. The cleaning member  50  is detachably provided on the head unit  30 , and when the cleaning is completed, the cleaning member  50  is separated from the head unit  30  and washed or replaced with another cleaning member  50 . The cleaning member  50  includes the member body  52  and an inside cleaning member  56 . 
     At least one portion of the cleaning member  50  is formed of felt. However, the material of the cleaning member  50  is not limited thereto, and the cleaning member  50  may be provided using various material as long as it passes air having foreign substance filtered therefrom. 
     The member body  52  may include an upper body  53  and a lower body  54 . The member body  52  may be separably provided on the head unit  30 . In detail, the upper body  53  of the member body  52  is attached to the attachment member  34   a  provided on the bottom surface  34  of the head unit  30  such that the member body  52  is separable. The upper body  53  is coupled to the lower body  54  through heat bonding, but the coupling of the upper body  53  and the lower body  54  is not limited thereto. According to the first embodiment of the present disclosure, the upper body  53  is coupled to the lower body  54  by thermal bonding edges  53   a  and  54   a  to each other. 
     The inside cleaning member  56  is provided inside the member body  52 . The inside cleaning member  56  is provided using moisture absorbing pulp that holds moisture inside the member body  52 , but the material of the inside cleaning member  56  is not limited. 
     According to such a configuration, the surface to be cleaned is wet cleaned through the member body  52  and the inside cleaning member  56 , and foreign substances that are not introduced through the entry part  35  and an inlet part  74 , which will be described later, are cleaned. 
     The cleaning member  50  may include the bottom cleaning part  60  and the dust collecting container  70 . The bottom cleaning part  60  is provided to make contact with the surface to be cleaned. That is, the bottom cleaning part  60  is disposed at the lower body  54  so as to face the surface to be cleaned. The shape of the bottom cleaning part  60  is not limited, and may be provided in a curved shape or flat shape. 
     The dust collecting container  70  has a filtering function to filter out foreign substances of air introduced to the entry part  35  of the head unit  30  by the driving force generated by the driving part  14 . That is, the dust collecting container  70  may be integrally formed with the member body  52 . In detail, the dust collecting container  70  may form a part of the upper body  53 . The dust collecting container  70  is formed at an end portion of the front side of the cleaner  1 , and disposed at a front side of the bottom cleaning part  60 . That is, the dust collecting container  70  is formed adjacent to the member body  52 , so that the dust collecting container  70  serves to suction and collect foreign substances and the member body  52  serves to wipe foreign substances on the surface to be cleaned. The dust collecting container  70  is provided in an approximate pocket shape. 
     The dust collecting container  70  may include a container body  72  and the inlet part  74 . 
     The container body  72  is formed to have a dust collecting space  72   a  therein. When the cleaning member  50  is attached to the bottom surface  34  of the head unit  30  before a cleaning operation, the dust collecting container  70  is provided to be exposed to the outside. However, when the cleaner  1  operates and air for suctioning stuffs into the entry part  35  is generated, the container body  72  is suctioned together with the air and thus is disposed in the inner space  32   a  of the head unit  30 . As the dust collecting container  70  moves into the inner space  32   a  of the head unit  30 , the dust collecting container  70  forms the dust collecting space  72   a.    
     The container body  72  may be formed of the same material as the cleaning member  50 , but the material of the container body  72  is not limited thereto. The container body  72  may formed of various material as long as it passes air having foreign substances filtered therefrom. 
     The inlet part  74  is formed at an end portion of the container body  72  to form an opening  74   a  allowing air to be introduced into the dust collecting space  72   a . That is, the inlet part  74  is provided at an upstream side of the air flow path of suctioned air when compared to the container body  72 . 
     One side of the inlet part  74  is fixed by the member body  52 , and the other side of the inlet part  74  is fixed as an inlet fixing part  76  is fixed to the head unit  30 . 
     The inlet fixing part  76  is provided to be formed along at least one portion of the inlet part  74  forming the opening  74   a . According to the first embodiment of the present disclosure, the inlet fixing part  76  is disposed at a front side of the inlet part  74  and fixed to the front surface of the head unit  30 . The inlet fixing part  76  extends from the inlet part  74  and allows at least one portion of the inlet part  74  to be fixed such that the opening  74  is kept open. 
     That is, one side of the inlet part  74  is fixed as the member body  52  integrally formed with the inlet part  74  is attached or coupled to the head unit  30 , and the other side of the inlet part  74  is fixed as the inlet fixing part  76  is fixed to the front surface of the head unit  30  such that the opening  74   a  of the inlet part  74  is kept open. 
     The head unit  30  is provided with a mounting part  36  and a fixing part  36   a  formed at a front side thereof. The mounting part  36  is provided at a position corresponding to the inlet fixing part  76  such that the inlet fixing part  76  is mounted on the mounting part  35 . The fixing part  36   a  is formed of elastic member and radially slit such that at least one portion of the inlet fixing part  76  is introduced into the fixing part  36   a  and prevented from being randomly separated by an elastic force. 
     The head unit  30  may include a fixing cover  38  provided at a front side of the head unit  30  to cover the fixing part  36   a  to which the inlet fixing part  76  is fixed. The fixing cover  38  is provided to open and close the fixing part  36   a . Such a configuration allows the inlet fixing part  76  to be secondarily fixed. 
     The dust collecting container  70  is formed by thermally bonding edges  70   a  of two planes each having a trapezoidal shape to each other. 
     The cleaning member  50  may include a backflow preventing rib  80 . 
     The backflow preventing member  80  is provided to prevent foreign substances accumulated on the dust collecting container  70  from being discharged to the outside again. The backflow preventing rib  80  is provided in a shape corresponding to the inlet part  74 , and disposed on the lower body  54 . 
     When the driving part  14  operates, a suction force is generated by the driving part  14  in the container body  72  such that foreign substances are pushed in the direction of the suctioned air in the container body  72 . When the driving part  14  stops operating, the suction force also stops being generated. In this process, the foreign substances drop downward, and discharged to the outside through the inlet part  74 . In order to prevent the foreign substances from being discharged to the outside, the backflow preventing rib  80  is formed to block the opening  74   a  of the inlet part  74 . That is, the backflow preventing rib  80  is formed to have one end thereof oriented toward the dust collecting space  72   a  of the container body  72  by the suction force when the driving part  14  operates, and the backflow preventing rib  80  is provided to block the opening  74   a  of the inlet part  74  by the suction force disappearing when the driving part  14  stops operating. In this manner, the foreign substances inside the container body  72  are prevented from being discharged to the outside. 
     In other words, the backflow preventing rib  80  extends from the member body  52  and is provided to move between an opening position  80   a  in which the opening  74   a  of the dust collecting container  70  is open and a closing position  80   b  in which the opening  74   a  is closed depending on generation of the suction force by the driving part  14 . 
     Hereinafter, a flow of the suctioned air according to the operation of the cleaner  1  will be described. 
       FIGS. 9A, 9B and 9C  are drawings showing a state of the cleaning member operating according to operation of the cleaner in accordance with the first embodiment of the present disclosure. 
     Referring to  FIG. 9A , when the cleaning member  50  is attached to the head unit  30  before the cleaner  1  operates, the container body  72  is provided to be exposed to the outside of the head unit  30 . 
     In this case, as the cleaner  1  operates, the container body  72  forms the dust collecting space  72   a  inside the container body  72  due to the suction force of the driving part  14 , and the container body  72  is disposed inside the head unit  30  as shown in  FIG. 9B . As the cleaning operation proceeds, foreign substances on the surface to be cleaned are collected in the dust collecting container  70 , and also cleaned by the bottom cleaning part  60 . In this case, the backflow preventing rib  80  is disposed to be oriented toward the dust collecting space  72   a  of the container body  72  by the suction force, thereby opening the opening  74   a.    
     As the cleaner  1  stops operating, the suction force is not generated by the driving part  14 . The foreign substances inside the dust collecting container  70  drop to a lower side of the dust collecting space  72   a  as shown in  FIG. 9C . However, since the suction force is not generated, the backflow preventing rib  80  returns to its original position, thereby closing the opening  74   a.    
     Hereinafter, a process of mounting the cleaning member  50  on the cleaner  1  will be described. 
       FIGS. 10A to 10F  are drawings showing a state of the cleaning member  50  being coupled to the cleaner  1  in accordance with the first embodiment of the present disclosure. 
     Referring to  FIGS. 10A and 10B , the cleaning member  50  is attached to the lower side of the head unit  30 . 
     Thereafter, referring to  FIGS. 100 and 10D , the fixing cover  38  of the head unit  30  is opened and a portion of the inlet fixing part  76  is introduced into the fixing part  36   a  such that the inlet part  74  of the dust collecting container  70  is fixed to be prevented from being introduced into the head unit  30  by the suction force of the driving part  14 . 
     The fixing cover  38  is closed after the inlet fixing part  76  is fixed, and the cleaner  1  is operated. 
     Referring to  FIGS. 10E and 10F , as the cleaner  1  operates, a suction force is generated by the driving part  14 , and the container body  72  of the dust collecting container  70  is introduced into the head unit  30 , and the inlet part  74  is fixed by the member body  52  and the inlet fixing part  76  while forming the opening  74   a  without being introduced into the head unit  30 . 
     Hereinafter, a cleaning member according to the second embodiment of the present disclosure and the cleaner having the same will be described. 
       FIG. 11  is a perspective view showing a cross section of a head unit and a backflow preventing unit in accordance with the second embodiment of the present disclosure. 
     According to the second embodiment of the present disclosure, a backflow preventing unit  100  is provided to prevent foreign substances in the dust collecting container  70  from being discharged to the outside. 
     The backflow preventing unit  100  is provided to operate in associated with an operation of the cleaner  1 . In detail, the backflow preventing unit  100  is provided to open and close the opening  74   a  of the dust collecting container  70  and the entry part  35  of the head unit  30  depending on whether the cleaner  1  operates or not. 
     The backflow preventing unit  100  is provided to correspond to the entry part  35 , and according to the second embodiment of the present application, the backflow preventing unit  100  is provided in the form of a rib having a width corresponding to that of the entry part  35 , and configured to move back and forth along a guide rail  110 . In addition, according to operation of the cleaner  1 , the backflow preventing unit  100  is configured to open the entry part  35  when the driving part  14  operates, and close the entry part  35  when the driving part  14  stops operating. However, the configuration of the backflow preventing unit  100  opening/closing the entry part  35  is not limited thereto, and may be provided in various forms as long as the backflow preventing unit  100  opens and closes the entry part  35  of the head unit  30  and the opening  74   a  of the dust collecting container  70 . 
     Hereinafter, an operation of a cleaning member according to the second embodiment of the present disclosure and the cleaner having the same will be described. 
       FIGS. 12A and 12B  are drawings showing an operation of the backflow preventing unit according to operation of the cleaner in accordance with the second embodiment of the present disclosure. 
     First, when the cleaner  1  operates, the container body  72  of the dust collecting container  70  is disposed in the inner space  32   a  of the head unit  30  to filter out foreign substances of air introduced from the outside. In this case, the backflow preventing unit  100  is disposed at an opening position  100   a  such that the entry part  35  is open. 
     When the cleaning is completed and the driving part  14  stops operating, the backflow preventing unit  100  is moved along the guide rail  100  and disposed at a closing position  100   b  such that the entry part  35  is closed. The backflow preventing unit  100  is disposed at the closing position  100   b , the entry part  35  of the head unit  30  is closed, and the opening  74   a  of the dust collecting container  70  is blocked, and thus foreign substances in the dust collecting container  70  are prevented from being discharged to the outside. 
     Although the backflow preventing unit  100  according to the second embodiment of the present disclosure operates in linkage with the operation of the driving part  14 , the present disclosure is not limited thereto. For example, the backflow preventing unit  100  may operate according to a separate control regardless of the operation of the driving part  14 . 
     Hereinafter, a cleaning member according to the third embodiment of the present disclosure and the cleaning having the same will be described. 
       FIG. 13  is a perspective view showing a cross section of a head unit and a backflow preventing protrusion in accordance with the third embodiment of the present disclosure. 
     According to the third embodiment of the present disclosure, a backflow preventing protrusion  120  is provided to prevent foreign substances in the dust collecting container  70  from being discharged to the outside. 
     The backflow preventing protrusion  120  is formed adjacent to the entry part  35  of the head unit  30 , and configured to be projected toward the inner space  32   a  of the head unit  30 . The backflow preventing protrusion  120  is provided in a shape corresponding to that of the dust collecting container  70 , and when the driving part  14  stops generating a suction force and the dust collecting container  70  is inclined in the inner space  32   a  due to the deadweight, the backflow preventing protrusion  120  pushes one side of the dust collecting container  70  to confine opening  74   a.    
     After the suctioning process of the driving part  14  is completed, the dust collecting container  70  lies down as shown in  FIG. 14B , and in this process, a portion of the dust collecting container  70  is confined such that the opening  74   a  of the dust collecting container  70  becomes narrower, thereby preventing foreign substances from being discharged to the outside. 
     Hereinafter, an operation of the cleaning member according to the third embodiment of the present disclosure and the cleaner having the same will be described. 
       FIGS. 14A and 14B  are drawings illustrating the backflow preventing protrusion and the dust collecting container according to operation of the cleaner in accordance with the third embodiment of the present disclosure. 
     Referring to  FIG. 14A , while a suction force is being generated by the driving part  14 , the dust collecting container  70  forms the inner space  32   a  and foreign substances are accumulated in the dust collecting container  70 . 
     Referring to  FIG. 14B , when the cleaning is completed and the driving part  14  stops operating, the dust collecting container  70  lies down due to the deadweight and the weight of foreign substances, and thus the opening  74   a  of the dust collecting container  70  is pressed by the backflow preventing protrusion  120 . In this case, the opening  74   a  of the dust collecting container  70  is pressed to be narrowed, and foreign substances in the dust collecting container  70  are prevented from being discharged to the outside. 
     Although a few embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.