Patent Publication Number: US-2023136405-A1

Title: Vacuum cleaner

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application PCT/KR2021/006412 filed May 24, 2021, and claims foreign priority to Korean application 10-2020-0088986 filed Jul. 17, 2020, the disclosures of which are incorporated herein by reference in their entireties. 
    
    
     BACKGROUND 
     1. Field 
     The disclosure relates to a vacuum cleaner, and more particularly, to a vacuum cleaner having an enhanced structure. 
     2. Description of Related Art 
     Cleaners are machines for removing rubbish to clean the room, and vacuum cleaners are often used in many households. The vacuum cleaner cleans the room by sucking up air with suction force of a fan motor unit and then separating rubbish in the air through a device such as a filter. The vacuum cleaners may have canister types and upright types, and robot vacuum cleaners that perform cleaning by sucking up rubbish such as dust from a floor to be cleaned while running around on its own in a cleaning area without user&#39;s manipulation are becoming popular these days. 
     The vacuum cleaner includes a dust collection device inside to filter off the rubbish contained in the air sucked in with a filtering device. For the filtering device to filter off the rubbish in the dust collection device, there is a porous filtering device having a method of forcedly filtering the rubbish while the air passes a porous filter, and a cyclone type dust collection device that filters off the rubbish during a cyclone movement of the air. 
     The vacuum cleaner is unsanitary and inconvenient to use because rubbish such as human or animal hair gets tangled with the dust collection device, making the user have to untangle the rubbish in person from the dust collection device. 
     SUMMARY 
     According to an embodiment of the disclosure, a vacuum cleaner includes a housing having a dust collection chamber inside the housing; a main body that is movable against the housing between a first position and a second position; a guide device to guide movement of the main body against the housing; a rubbish removal member in the dust collection chamber; and an opening or closing device to open or close the dust collection chamber, wherein the main body, the guide device, the rubbish removal member, and the opening or closing device are configured so that, (a) when the main body is moved against the housing from the first position to the second position, the opening or closing device opens the dust collection chamber, and the rubbish removal member moves toward an open end of the dust collecting chamber to allow rubbish removed by the rubbish removal member to be discharged out of the dust collection chamber, and (b) when the main body is moved against the housing from the second position to the first position, the rubbish removal member moves away from the open end of the dust collection chamber toward an inside of the dust collection chamber, and the opening or closing device closes the dust collection chamber. 
     According to an embodiment of the disclosure, the guide device may include a roller protruding from a surface of the guide device facing the main body toward the main body. 
     According to an embodiment of the disclosure, the roller may have a rotation axis perpendicular to a moving direction of the main body. 
     According to an embodiment of the disclosure, the roller may be arranged to roll on an outer surface of the main body. 
     According to an embodiment of the disclosure, the guide device may include a body rotationally supporting the roller. 
     According to an embodiment of the disclosure, the guide device may include a plurality of rollers equidistantly spaced apart from each other along an outer circumference of the main body. 
     According to an embodiment of the disclosure, the guide device may further include a stopper to limit movement of the main body to an opposite direction from a direction toward the first position in response to the main body being in the second position. 
     According to an embodiment of the disclosure, the stopper may include a buffer material. 
     According to an embodiment of the disclosure, the main body may include a battery installation portion in which a battery is mounted, and in response to the main body being in the second position, the stopper may be arranged to support the battery installation portion. 
     According to an embodiment of the disclosure, the battery installation portion may be in the housing. 
     According to an embodiment of the disclosure, the guide device may be provided in the singular, or in the plural at certain intervals in a moving direction of the main body. 
     According to an embodiment of the disclosure, the housing may include a guide installation portion formed on an inner surface of the housing to install and fix the guide device. 
     According to an embodiment of the disclosure, the dust collection chamber may be a first dust collection chamber, the main body may include a rubbish separation device to remove rubbish from air having passed the first dust collection chamber, and a second dust collection chamber may be in the housing to collect the rubbish separated from the rubbish separation device. 
     According to an embodiment of the disclosure, the rubbish removal member may be a first rubbish removal member, and the vacuum cleaner may include a second rubbish removal member arranged to slide on the second dust collection chamber and the first dust collection chamber to discharge rubbish from the second dust collection chamber in response to the main body moving from the first position to the second position. 
     According to an embodiment of the disclosure, a vacuum cleaner may include a housing equipped with a dust collection chamber inside, a main body arranged to be movable against the housing between a first position to close the dust collection chamber and a second position to open the dust collection chamber, and including an opening or closing device arranged to open or close the dust collection chamber, and a guide device arranged to guide movement of the main body against the housing, wherein the guide device includes a roller arranged to roll on an outer surface of the main body, and a body for rotationally supporting the roller. 
     According to an embodiment of the disclosure, the roller may be arranged to have a rotation axis perpendicular to a moving direction of the main body. 
     According to an embodiment of the disclosure, the guide device may include a plurality of rollers arranged to be equidistantly spaced apart from each other along an outer circumference of the main body. 
     According to an embodiment of the disclosure, the guide device may further include a stopper arranged to limit movement of the main body to an opposite direction from a direction toward the first position in response to the main body being in the second position. 
     According to an embodiment of the disclosure, the stopper may be formed to include a buffer material. 
     According to an embodiment of the disclosure, the guide device may be provided in the plural at certain intervals in a moving direction of the main body. 
     Additional aspects 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 presented embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Above and other aspects, features, and advantages of certain embodiments of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    is a perspective view of a vacuum cleaner, according to an embodiment of the disclosure. 
         FIG.  2    is an exploded view of the vacuum cleaner shown in  FIG.  1   , according to an embodiment of the disclosure. 
         FIG.  3    is a cross-sectional view of the vacuum cleaner shown in  FIG.  1   , according to an embodiment of the disclosure. 
         FIG.  4    is an enlarged view of portion A marked in  FIG.  3   , according to an embodiment of the disclosure. 
         FIG.  5    is an enlarged view of portion B marked in  FIG.  3   , according to an embodiment of the disclosure. 
         FIG.  6    illustrates emptying dust out of the vacuum cleaner shown in  FIG.  1   , according to an embodiment of the disclosure. 
         FIG.  7    is an exploded view of a guide device shown in  FIG.  2   , according to an embodiment of the disclosure. 
         FIG.  8    illustrates the interior of a housing when a body shown in  FIG.  2    is in a first position in relation to the housing, according to an embodiment of the disclosure. 
         FIG.  9    illustrates the interior of the housing when the body shown in  FIG.  2    is in a second position in relation to the housing, according to an embodiment of the disclosure. 
         FIG.  10    illustrates a modified embodiment of the vacuum cleaner shown in  FIG.  5   , according to an embodiment of the disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments and features as described and illustrated in the disclosure are merely examples, and there may be various modifications replacing the embodiments and drawings at the time of filing this application. 
     Throughout the drawings, like reference numerals refer to like parts or components. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. It is to be understood that the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, 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. 
     The terms including ordinal numbers like “first” and “second” may be used to explain various components, but the components are not limited by the terms. The terms are only for the purpose of distinguishing a component from another. Thus, a first element, component, region, layer or room discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the disclosure. Descriptions shall be understood as to include any and all combinations of one or more of the associated listed items when the items are described by using the conjunctive term “˜ and/or ˜,” or the like. 
     Various embodiments of the disclosure provide provides a vacuum cleaner capable of easily discharging rubbish collected in a dust collection chamber. 
     Moreover, various embodiments of the disclosure also provide a vacuum cleaner capable of easily moving a main body against a housing. 
     According to various embodiments of the disclosure, a vacuum cleaner may easily discharge rubbish collected in a dust collection chamber by having a body arranged to slide to open or close a dust collection chamber. 
     Further, according to various embodiments of the disclosure, a vacuum cleaner may include a guide device arranged between a housing and a main body to facilitate movement of the main body against the housing. 
     Reference will now be made in detail to embodiments of the disclosure, which are illustrated in the accompanying drawings. Where a suction head  10  is arranged in  FIG.  1    may be defined as front and where a handle  90  is arranged may be defined as back. In other words, it may be defined that air is brought in at the front of a vacuum cleaner  1  and discharged through the back. Shapes and positions of respective components are not, however, limited by the terms defined as described above. 
       FIG.  1    is a perspective view of a vacuum cleaner, according to an embodiment of the disclosure.  FIG.  2    is an exploded view of the vacuum cleaner shown in  FIG.  1   .  FIG.  3    is a cross-sectional view of the vacuum cleaner shown in  FIG.  1   .  FIG.  4    is an enlarged view of portion A marked in  FIG.  3   .  FIG.  5    is an enlarged view of portion B marked in  FIG.  3   .  FIG.  6    illustrates emptying dust out of the vacuum cleaner shown in  FIG.  1   . 
     Referring to  FIGS.  1  and  2   , the vacuum cleaner  1  may include the suction head  10  provided to suck up rubbish such as hair on a floor to be cleaned with suction force of air, a housing  20  connected to the suction head  10 , and a main body  30  arranged to be movable to the interior of the housing  20 . 
     The suction head  10  is provided to suck up rubbish such as dust present on the floor to be cleaned while moving around on the floor to be cleaned. The suction head  10  may include a head assembly  11 , a neck part  12 , and a head switch  13 . 
     An air flow path may be formed in the head assembly  11 . The air flow path formed in the head assembly  11  may be linked to the housing  20  through the neck part  12 . Outside air and rubbish brought in through the head assembly  11  may be moved into the housing  20  through the neck part  12 . 
     The neck part  12  may be connected to the lower end of the housing  20 . The neck part  12  may be rotationally coupled to the head assembly  11 . As the neck part  12  is rotated against the head assembly  11 , the head assembly  11  may be rotated against the housing  20  connected to the neck part  12 . Accordingly, the vacuum cleaner  1  may be operated with an improved degree of freedom. 
     The head switch  13  is provided to fix or unfix a coupled state between the suction head  10  and the housing  20 . The user may manipulate the head switch  13  to detach the housing  20  from the suction head  10 . With the head switch  13  arranged at the suction head  10 , the user may detach the housing  20  from the suction head  10  by manipulating the head switch  13  with his/her foot without bending his/her back. 
     The housing  20  may form a portion of the exterior of the vacuum cleaner  1 . An end portion  21  of the housing  20  may be mounted in the suction head  10 . The housing  20  may include a cavity  22  formed for the main body  30  to be movably inserted therein 
     Referring to  FIGS.  3  and  5   , a button device  26  formed to fix the position of the main body  30  against the housing  20  may be provided at the housing  20 . The user may move the main body  30  against the housing  20  by manipulating the button device  26  to unfix the main body  30  from the housing  20 . 
     The main body  30  may be slidably coupled to the housing  20 . The main body  30  may be arranged to be movable between a first position to close the dust collection chambers  81  and  82  and a second position to open the dust collection chambers  81  and  82 . 
     A guide device  100  may be arranged between the housing  20  and the main body  30 . The guide device  100  may guide and support the movement of the main body  30  against the housing  20 . The guide device  100  will be described later. 
     The main body  30  may include an extension  31  that defines a portion of the exterior of the vacuum cleaner  1 . A room  31   a  for receiving an electric wire extending toward an operation switch  91  may be formed in the extension  31 . 
     The handle  90  may be arranged at a rear end of the extension  31 . The handle  90  may be arranged at the other end of the main body  30  opposite from an end at which an opening or closing device  60  is arranged. When using the vacuum cleaner  1 , the user may hold the handle  90  to push or pull the suction head  10 . 
     The operation switch  91  may be arranged on the handle  90  to control operation of the vacuum cleaner. The operation switch  91  is provided to receive a command to start the vacuum cleaner  1  from the user. The operation switch  91  may be placed adjacent to the handle  90  for the user to manipulate the operation switch  91  while moving the vacuum cleaner  1  for cleaning. 
     The main body  30  may include a battery installation portion  32 . A battery  33  may be mounted in the battery installation portion  32 . One, two or more batteries  33  may be provided. The battery installation portion  32  may be located in the housing  20 . 
     The main body  30  may be equipped with a fan motor unit  40  configured to generate suction force required to suck up rubbish on the floor to be cleaned. The fan motor unit  40  may be configured to bring in outside air through the suction head  10  and discharge the air through exhaust holes  23  and  24  of the housing  20 . The fan motor unit  40  may be arranged within the housing  20  in a state of being equipped in the main body  30 . 
     Referring to  FIGS.  2  to  4   , when the main body  30  is coupled with the housing  20 , a first dust collection chamber  81  and a second dust collection chamber  82  may be formed in the vacuum cleaner  1 . Specifically, when the main body  30  is in the first position in relation to the housing  20 , the first dust collection chamber  81  and the second dust collection chamber  82  may be formed in the vacuum cleaner  1 . 
     An outer case  83  that forms the dust collection chambers  81  and  82  and an inner case  84  arranged inside the outer case  83  may be provided in the housing  20 . The outer case  83  may be arranged between the housing  20  and the inner case  84 . 
     The outer case  83  may form a case flow path  85  together with the inner case  84 . The case flow path  85  may lead air that has passed the first dust collection chamber  81  to the second dust collection chamber  83 . 
     The inner case  84  may be arranged inside the outer case  83 . The first dust collection chamber  81  may be formed inside the inner case  84 . A filtering device  86  may be provided in the inner case  84 . The first dust collection chamber  81  may collect rubbish filtered off when the air brought in through the suction head  10  passes the filtering device  86 . 
     The filtering device  86  may initially filter the rubbish off from the air brought in through the suction head  10 . The filtering device  86  may extend along a portion of the inner surface of the inner case  84 . The rubbish filtered off by the filtering device  86  may be collected in the first dust collection chamber  81 . The filtering device  86  may be formed of a mesh member. 
     The inner case  84  may include a case opening  87  through which the air led through the case flow path  85  is brought into a rubbish separation device  51 . 
     The air brought into the rubbish separation device  51  through the case opening  87  may be secondly filtered in the rubbish separation device  51 . The rubbish filtered off by the rubbish separation device  51  may be collected in the second dust collection chamber  82 . The air filtered in the rubbish separation device  51  may be moved to the motor filter  46 . 
     The main body  30  may include the opening or closing device  60  formed to open or close the first dust collection chamber  81 . The opening or closing device  60  may be arranged at an end of the main body  30  facing the suction head  10 . The opening or closing device  60  may be formed to work with a first rubbish removal member  70  and a second rubbish removal member  75 . 
     As the opening or closing device  60  works with the first rubbish removal member  70  and/or the second rubbish removal member  75 , unintentional opening of the first dust collection chamber  81  may be prevented and the dust collection chambers  81  and  82  may be opened only to discharge the rubbish. The opening or closing device  60  may include an opening or closing member  61 , an opening or closing cover  62 , and an opening or closing sealing member  63 . 
     The opening or closing device  60  may be arranged to be moved away from the housing  20  to open the first dust collection chamber  81  when the first rubbish removal member  70  slides and is drawn out from the first dust collection chamber  81 . The opening or closing device  60  may be arranged to be moved nearer to the housing  20  to close the first dust collection chamber  81  when the first rubbish removal member  70  slides and is drawn into the first dust collection chamber  81 . 
     The opening or closing member  61  may open or close the first dust collection chamber  81  as the main body  30  slides against the housing  20 . The opening or closing member  61  may include a chamber inlet  61   a  formed for the air brought in from the suction head  10  to flow into the first dust collection chamber  81 . The chamber inlet  61   a  may be opened or closed by the opening or closing cover  62 . 
     The opening or closing cover  62  may be formed to include an elastic material. The opening or closing cover  62  may open the chamber inlet  61   a  in a direction in which air flows into the first dust collection chamber  81 . On the contrary, the opening or closing cover  62  may be arranged not to open the chamber inlet  61   a  in an opposite direction from the direction in which air flows into the first dust collection chamber  81 . In other words, the opening or closing cover  62  may open the chamber inlet  61   a  when the vacuum cleaner  1  sucks up rubbish on the floor to be cleaned, but may not open the chamber inlet  61   a  in a direction of discharging dust from the first dust collection chamber  81 . Hence, scattering of the rubbish may be prevented when the housing  20  is separated from the suction head  10 . 
     The opening or closing cover  62  may include a cover hinge part  62   a . When the fan motor unit  40  generates suction force, the opening or closing cover  62  may be elastically deformed to open the chamber inlet  61   a  while the cover hinge part  62   a  is fixed. When the fan motor unit  40  generates no suction force, the opening or closing cover  62  may return to a position to close the chamber inlet  61   a  by elastic force. 
     The opening or closing sealing member  63  may be provided to seal between the inner case  84  and the opening or closing member  61 . The opening or closing member  63  may be arranged along edges of the opening or closing member  61 . The opening or closing member  63  may be formed to include an elastic material. The opening or closing member  63  may be formed to include a more flexible material than the opening or closing member  61 . The opening or closing member  63  may closely contact the inner surface of the inner case  84  to seal the first dust collection chamber  81 . Accordingly, the vacuum cleaner  1  in the embodiment of the disclosure may prevent the rubbish from coming out of the first dust collection chamber  81 . 
     The main body  30  may include the first rubbish removal member  70  arranged to discharge the rubbish from the first dust collection chamber  81 . The first rubbish removal member  70  may be arranged to slide on the first dust collection chamber  81 . The first rubbish removal member  70  may include a first installation portion  71  and a first rubbish remover  72  installed in the first installation portion  71 . 
     The first rubbish remover  72  may be formed to include an elastic material. The first rubbish remover  72  may be formed to closely contact an inner wall of the filtering device  86 . The first rubbish remover  72  may be arranged to closely contact a surface of the filtering device  86  through which rubbish is filtered. When the main body  30  slides against the housing  20 , the first rubbish remover  72  may slide in a state of closely contacting the inner surface of the filtering device  86 . The first rubbish remover  72  may remove rubbish such as hair tangled with the inner surface of the filtering device  86  by scratching the inner surface of the filtering device  86  when the main body  30  is forced to slide into the housing  20 . 
     The first rubbish removal member  70  may move from a first position between the filtering device  86  and the rubbish separation device  51  to a second position protruding out of the housing  20 . Hence, the first rubbish removal member  70  may discharge the rubbish present in the first dust collection chamber  81  to the outside. Furthermore, as the first rubbish removal member  70  protrudes out of the housing  20 , dust collected in the second dust collection chamber  82  may also be discharged to the outside. 
     The main body  30  may include a first connector  69  that connects the first rubbish removal member  70  to the opening or closing device  60 . The first connector  69  may be arranged in the first dust collection chamber  81 . The first rubbish removal member  70  and the opening or closing device  60  may be engaged by the first connector  69 . 
     Referring to  FIG.  6   , a discharge opening  68  may be formed between a plurality of first connectors  69 . The discharge opening  68  may be formed between the first rubbish removal member  70  and the opening or closing device  60 . When the opening or closing device  60  opens the first dust collection chamber  81  and the first rubbish removal member  70  discharges rubbish from the first dust collection chamber  81 , the rubbish may be discharged to the outside through the discharge opening  68 . 
     The main body  30  may include the rubbish separation device  51 . The rubbish separation device  51  may include a cyclone. The rubbish separation device  51  may centrifugally separate rubbish that has not been filtered in the first dust collection chamber  81  from the air. As the rubbish separation device  51  separates the rubbish from the air that has passed the filtering device  86  in a different method from the filtering device  86 , the vacuum cleaner  1  according to the embodiment of the disclosure may have increased cleaning efficiency. 
     The main body  30  may include the second rubbish removal member  75  arranged to discharge the rubbish from the second dust collection chamber  82 . The second rubbish removal member  75  may be arranged to slide on the second dust collection chamber  82  and the first dust collection chamber  81 . The second dust collection chamber  82  may be formed between the first rubbish removal member  70  and the second rubbish removal member  75 . The second rubbish removal member  75  may include a second installation portion  76  and a second rubbish remover  77  installed in the second installation portion  76 . 
     The second rubbish remover  77  may be formed to include an elastic material. The second rubbish remover  77  may slide in a state of closely contacting the inner surface of the inner case  84  to discharge the rubbish from the second dust collection chamber  82  when the main body  30  slides against the housing  20 . The second rubbish remover  77  may slide in a state of closely contacting the inner surface of the inner case  82  to empty out all the rubbish from the second dust collection chamber  84  when the main body  30  slides against the housing  20 . 
     The main body  30  may include a second connector  79  that connects the first rubbish removal member  70  to the second rubbish removal member  75 . The second connector  79  may be arranged in the second dust collection chamber  82 . The second rubbish removal member  75  and the first rubbish removal member  70  may be engaged by the second connector  79 . 
     A motor filter  46  may be provided in the main body  30 . The motor filter  46  may be arranged to filter off the rubbish in the air again before the air flows into the fan motor unit  40 . The motor filter  46  may be placed in front of the fan motor unit  40  in a direction of discharging the air that has passed the rubbish separation device  51 . The motor filter  46  may be arranged between the fan motor unit  40  and the rubbish separation device  51 . The motor filter  46  may filter off the rubbish from the air that has passed the rubbish separation device  51 . The motor filter  46  may be formed of a mesh member. 
     The motor filter  46  may be arranged within the housing  20  in a state of being equipped in the filter case  47  of the main body  30 . In the embodiment of the disclosure, the vacuum cleaner  1  may prevent the fan motor unit  40  from being damaged by the motor filter  46  due to the rubbish, and may release relatively clean air. 
     The fan motor unit  40  may be arranged to generate suction force for the first dust collection chamber  81  and the second dust collection chamber  82 . The air that has passed the motor filter  46  may pass through the fan motor unit  40  and may then be discharged from the housing  20 . 
     In an embodiment of the disclosure, with the fan motor unit  40 , which weighs relatively heavy as compared with the battery  33 , arranged farther down than the battery  33 , the vacuum cleaner  1  may have the lowered center of gravity. Accordingly, with the lowered center of gravity, the vacuum cleaner  1  in the embodiment of the disclosure may increase convenience of use. 
     In an embodiment of the disclosure, the vacuum cleaner  1  may be provided so that a portion of the main body  30  in which the fan motor unit  40  is arranged is partitioned off from the battery installation portion  32 . That is, the air moved by the fan motor unit  40  is not moved to the battery installation portion  32  and the handle  90 , but discharged right through a motor exhaust hole  41  and the exhaust holes  23  and  24  of the housing  20 . Accordingly, the vacuum cleaner  1  in the embodiment of the disclosure may minimize the discharged air moving toward the user. 
     A controller  36  may be arranged between the fan motor unit  40  and the battery installation portion  32 . The controller  36  may be provided as a printed board assembly (PBA). The controller  36  may be provided to control operations of the vacuum cleaner  1 . 
     With the aforementioned structure, to perform cleaning, the vacuum cleaner  1  in the embodiment of the disclosure may initially filter the air containing rubbish brought in from the suction head  10  in the filtering device  86  of the first dust collection chamber  81 . After this, the air moved to the rubbish separation device  51  through the case flow path  85  may be filtered secondly. The air filtered in the rubbish separation device  51  may be collected in the second dust collection chamber  82 . The air that has passed the rubbish separation device  51  may be filtered for the third time while passing the motor filter  46 , and may then pass through the fan motor unit  40 . The air that has passed through the fan motor unit  40  may be discharged through the motor exhaust hole  41  and the exhaust holes  23  and  24  of the housing  20 . 
     Referring to  FIG.  6   , to empty out the rubbish collected in the dust collection chambers  81  and  82  after finishing the cleaning work, the user may make the main body  30  slide against the housing  20 . In this case, the user may manipulate the button device  26  to move the main body  30 . 
     When the main body  30  slides in the housing  20 , the opening or closing device  60  arranged at an end of the main body  30  opens the first dust collection chamber  81 , the first rubbish removal member  70  slides on a surface of the filtering device  86  where the rubbish is present, and the second rubbish removal member  75  slides on the inner surface of the second dust collection chamber  82  and on the surface of the filtering device  86  where the rubbish is present. The first rubbish removal member  70  may separate the rubbish present in the filtering device  86  to be discharged out of the first dust collection chamber  81 . The second rubbish removal member  75  may discharge the rubbish out of the second dust collection chamber  82  and simultaneously, secondly separate the rubbish present in the filtering device  86  and discharge the rubbish out of the first dust collection chamber  81 . 
     For this, the first rubbish removal member  70  and the second rubbish removal member  75  may be moved to a position that protrudes out of the housing  20 . Alternatively, the main body  30  may be moved so that only the opening or closing device  60  is exposed to the outside of the housing  20  and the first rubbish removal member  70  and the second rubbish removal member  75  are not exposed to the outside of the housing  20 . Furthermore, the main body  30  may be moved so that only the opening or closing device  60  and the first rubbish removal member  70  are exposed to the outside of the housing  20  and the second rubbish removal member  75  are not exposed to the outside of the housing  20 . 
     When discharging of the dust out of the dust collection chambers  81  and  82  is done, the user may move the handle  90  of the main body  30  to be away from the housing  20 , and accordingly, the opening or closing device  60  is moved to a position to close the first dust collection chamber  81 . Furthermore, the button device  26  may fix the position of the main body  30  in relation to the housing  20 . 
     With this structure, the vacuum cleaner  1  according to the embodiment of the disclosure may easily empty out the rubbish from the dust collection chambers  81  and  82  with a relatively simple operation. Moreover, as the opening or closing device  60  is arranged to open or close the dust collection chambers  81  and  82  only to discharge the rubbish in the dust collection chambers  81  and  82 , scattering of rubbish may be prevented even when the housing  20  is detached from the suction head  10 . 
       FIG.  7    is an exploded view of a guide device shown in  FIG.  2   .  FIG.  8    illustrates the interior of a housing when a body shown in  FIG.  2    is in a first position in relation to the housing.  FIG.  9    illustrates the interior of the housing when the body shown in  FIG.  2    is in a second position in relation to the housing.  FIG.  10    illustrates a modified embodiment of the vacuum cleaner shown in  FIG.  5   . 
     Referring to  FIGS.  7  to  9   , the guide device  100  may be fixed to the housing  20 . The housing  20  may include a guide installation portion  20   a  where the guide device  100  is installed. The guide device  100  may be provided in the plural and arranged at certain intervals in the moving direction of the main body  30  to stably support the main body  30 . Although two guide devices  100  are shown in  FIGS.  7  to  9    as being arranged, the number of the guide devices  100  is not limited thereto and there may be one or three or more guide devices  100 . 
     Specifically, referring to  FIG.  10   , the vacuum cleaner  1  may include one guide device  100 ′. Accordingly, the vacuum cleaner  1  may save the cost of production. 
     The guide device  100  may include a first body  101 , a second body  102 , and a roller  103 . The first body  101  and the second body  102  may be referred to as a body  101  and  102 . 
     The first body  101  may include a first roller installation portion  101   a  at which the roller  103  is rotationally mounted. The second body  102  may also include a second roller installation portion  102   a  at which the roller  103  is rotationally mounted. The second roller installation portion  102   a  of the second body  102  may be arranged to match the first roller installation portion  101   a  of the first body  101 . 
     The rollers  103  may be rotationally mounted at the first body  101  and the second body  102 . The rollers  103  may be provided to support the outer surface of the main body  30 . The rollers  103  may protrude from a surface of the body  101  and  102  facing the main body  30  toward the main body  30 . The rollers  103  may have a rotation axis perpendicular to the moving direction of the main body  30  against the housing  20 . Accordingly, the rollers  103  may roll on the outer surface of the main body  30 . 
     The rollers  103  may be arranged in the plural, which are arranged equidistantly along the outer circumference of the main body  30 . Although three rollers  103  are shown in  FIG.  7    as being arranged, the number of the rollers  103  is not limited thereto, and any number of rollers may be provided at various locations as long as the rollers may guide the movement of the main body  30  against the housing  20  and arrange the position of the main body  30  in relation to the housing  20 . 
     Specifically, an inner space formed by the plurality of rollers  103  may be provided to match the outer surface of the main body  30  supported by the rollers  103 . Hence, when the main body  30  is coupled to the housing  20  in a wrong position, the rollers  103  may guide the main body  30  so that the main body  30  is coupled with the housing  20  in a right position. The main body  30  may be provided in a substantially cylindrical form, and distances from the center axis based on a moving direction of the main body  30  to the plurality of rollers  103  are the same. 
     A stopper  104  may be provided in the second body  102 . The stopper  104  may be arranged on a surface of the second body  102  facing the battery installation portion  32 . 
     When the main body  30  is in the second position in relation to the housing  20 , the stopper  104  may support the main body  30  for the opening or closing device  60  not to be moved away from the housing  20 . In other words, when the main body  30  is in the second position, the stopper  104  may limit the movement in an opposite direction from a direction toward the first position. Specifically, the stopper  104  may support the battery installation portion  32  of the main body  30 . The stopper  104  may support a stick part  32   a  protruding from the battery installation portion  32 . 
     The stopper  104  may be formed of a buffer material to relieve impact when the main body  30  collides with the guide device  100  while moving from the first position to the second position in relation to the housing  20 , 
     With this structure, the vacuum cleaner  1  according to the embodiment of the disclosure may easily move the main body  30  against the housing  20  to empty out rubbish from the dust collection chambers  81  and  82 . In other words, the guide device  100  reduces frictional force when the main body  30  is moved against the housing  20 , allowing the user to manipulate the vacuum cleaner  1  with relatively small force. 
     Furthermore, a movement distance of the main body  30  in relation to the housing  20  to open the dust collection chambers  81  and  82  may be limited with a relatively simple structure, and impact from collision between the main body  30  and the housing  20  may be relieved. 
     Several embodiments of the disclosure have been described above, but a person of ordinary skill in the art will understand and appreciate that various modifications can be made without departing from the scope of the disclosure. Thus, it will be apparent to those or ordinary skill in the art that the true scope of technical protection is only defined by the following claims.