Cleaner

Abstract

This cleaner comprises: a housing including a mounting bracket; a drum module movably accommodated in the mounting bracket; and a lift device which is mounted on the mounting bracket, and which lifts or lowers the drum module. The drum module includes: a drum case connected to the lift device; a drum rotatably mounted in the drum case; and a connection part rotatably coupled to the drum case and rotatably coupled to the mounting bracket.

Description

vacuum cleaner

[0001] The present disclosure relates to a vacuum cleaner comprising a drum.

[0002] A robot vacuum cleaner is a device that automatically cleans a cleaning space by moving around and sucking up dirt, such as dust accumulated on the floor, without user operation. The robot vacuum cleaner cleans the cleaning space by driving through it.

[0003] The robot vacuum cleaner determines the distance to obstacles such as furniture, office supplies, and walls installed within the cleaning area using a distance sensor, and cleans the area while autonomously changing direction by selectively driving the left and right wheel motors.

[0004] For example, a robot vacuum cleaner can be configured to perform dry cleaning by sucking up foreign substances such as dust from the floor, as well as wet cleaning by wiping away foreign substances such as dust from the floor. For example, the robot vacuum cleaner may include a mop for performing wet cleaning.

[0005] When performing dry cleaning, the robot vacuum cleaner may include a drum for separating foreign substances, such as dust, from the floor. As the drum is configured to separate foreign substances, such as dust, from the floor, the foreign substances can be easily sucked into the robot vacuum cleaner, and the cleaning efficiency of the robot vacuum cleaner can be improved.

[0006] One embodiment of the present disclosure provides a vacuum cleaner with improved usability of the drum.

[0007] One embodiment of the present disclosure provides a cleaner capable of reducing contamination of a drum.

[0008] One embodiment of the present disclosure provides a vacuum cleaner with improved mobility.

[0009] The technical problems to be solved in this document are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0010] A vacuum cleaner according to one embodiment of the present disclosure comprises a housing including a mounting bracket, a drum module movably accommodated in the mounting bracket, and a lift device mounted on the mounting bracket, the lift device being configured to raise or lower the drum module. The drum module comprises a drum case connected to the lift device, a drum rotatably mounted in the drum case, and a connecting part rotatably coupled to the drum case and rotatably coupled to the mounting bracket.

[0011] A vacuum cleaner according to one embodiment of the present disclosure comprises a housing including a mounting bracket, a drum module movably accommodated in the mounting bracket, and a lift device mounted on the mounting bracket and configured to raise or lower the drum module. The lift device comprises a lift driving source, a rotating part rotatably coupled to the lift driving source, and a lifter rotatably coupled to the rotating part and connected to the drum module. The lift driving source, the rotating part, and the lifter are configured such that the lifter is raised or lowered based on the rotation of the rotating part.

[0012] FIG. 1 shows a vacuum cleaner according to one embodiment of the present disclosure from the front.

[0013] FIG. 2 shows a vacuum cleaner according to one embodiment of the present disclosure from the rear.

[0014] FIG. 3 illustrates the lower part of a vacuum cleaner according to one embodiment of the present disclosure.

[0015] FIG. 4 illustrates a drum module and a lift device mounted on a mounting bracket according to one embodiment of the present disclosure.

[0016] FIG. 5 illustrates a state in which a drum module and a lift device according to one embodiment of the present disclosure are separated from a mounting bracket.

[0017] FIG. 6 illustrates a disassembled lift device according to one embodiment of the present disclosure.

[0018] FIG. 7 shows a lift device according to one embodiment of the present disclosure disassembled and illustrated in a different direction from FIG. 6.

[0019] FIG. 8 partially illustrates the state of the lift device and the drum module when the drum module is lowered according to one embodiment of the present disclosure.

[0020] FIG. 9 illustrates the state of the lift device and the drum module from the front when the drum module according to one embodiment of the present disclosure is lowered.

[0021] FIG. 10 illustrates the state of the lift device and the drum module from the side when the drum module according to one embodiment of the present disclosure is lowered.

[0022] FIG. 11 partially illustrates a cross-section along the line A-A' shown in FIG. 9.

[0023] FIG. 12 partially illustrates the state of the lift device and the drum module when the drum module is raised according to one embodiment of the present disclosure.

[0024] FIG. 13 illustrates the intermediate state of the lift device and the drum module from the front while the drum module is rising according to one embodiment of the present disclosure.

[0025] FIG. 14 illustrates the state of the lift device and the drum module from the front when the drum module according to one embodiment of the present disclosure has finished being lifted.

[0026] FIG. 15 illustrates the state of the lift device and the drum module from the side when the drum module according to one embodiment of the present disclosure is raised.

[0027] FIG. 16 partially illustrates a cross-section along the line B-B' shown in FIG. 14.

[0028] FIG. 17 illustrates a control block diagram of a vacuum cleaner according to one embodiment of the present disclosure.

[0029] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments.

[0030] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0031] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0032] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0033] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0034] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in other aspects (e.g., importance or order).

[0035] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0036] Terms such as "include" or "have" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in this document, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0037] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0038] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0039] For convenience of explanation, a robot vacuum cleaner, which is a type of vacuum cleaner, is described below as an example; however, the configuration of the present disclosure is not limited to a robot vacuum cleaner. For example, the configuration of the present disclosure may also be applied to canister-type vacuum cleaners or stick-type vacuum cleaners.

[0040] Meanwhile, terms such as "front," "back," "left," "right," "up," and "down" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, as shown in FIGS. 1 and 2, the direction in which the mop (160) is located from the center of the vacuum cleaner (1) can be defined as the rear (-X direction), and the opposite direction can be defined as the front (+X direction).

[0041] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0042] FIG. 1 illustrates a vacuum cleaner according to one embodiment of the present disclosure from the front. FIG. 2 illustrates a vacuum cleaner according to one embodiment of the present disclosure from the rear. FIG. 3 illustrates the lower part of a vacuum cleaner according to one embodiment of the present disclosure.

[0043] Referring to FIGS. 1 to 3, the vacuum cleaner (1) may include a housing (10). The housing (10) may form the overall exterior of the vacuum cleaner (1). Components of the vacuum cleaner (1) may be accommodated inside the housing (10). For example, electrical components may be placed inside the housing (10).

[0044] The vacuum cleaner (1) may include a suction port (11). The suction port (11) may be formed to face the surface to be cleaned. The suction port (11) may be open toward the surface to be cleaned. For example, the suction port (11) may be formed in the housing (10). The suction port (11) may be formed in the lower part of the housing (10). The suction port (11) may be formed through the lower housing (10b) of the housing (10). Dirt on the surface to be cleaned may be sucked into the housing (10) through the suction port (11) along with air.

[0045] For example, the vacuum cleaner (1) may include a brush (30). The brush (30) may strike the surface to be cleaned to scatter dirt. The dirt scattered by the brush (30) may be introduced into the suction port (11) along with air.

[0046] For example, the vacuum cleaner (1) may include a brush (30) positioned adjacent to the lower edge of the housing (10). The brush (30) may guide dirt around the housing (10) to the suction port (11). The brush (30) may be rotatably mounted with respect to the housing (10). The axis of rotation of the brush (30) may be an axis extending approximately along the vertical direction (Z direction). The brush (30) may be referred to as a side brush (30).

[0047] The vacuum cleaner (1) may include a dust collection container (40). Dirt and / or air sucked in through the suction port (11) may move to the dust collection container (40). Dirt sucked in through the suction port (11) may be collected in the dust collection container (40). Air sucked in through the suction port (11) may be filtered as it passes through the dust collection container (40). Dirt and air sucked in through the suction port (11) may be separated in the dust collection container (40).

[0048] The vacuum cleaner (1) may include an exhaust port (12). The exhaust port (12) may be formed in the housing (10). The exhaust port (12) may be formed on the rear side of the housing (10). Air sucked in through the intake port (11) may be filtered and discharged to the outside of the vacuum cleaner (1) through the exhaust port (12). For example, the exhaust port (12) may be provided in multiple numbers, and the multiple exhaust ports (12) may be composed of multiple holes.

[0049] The vacuum cleaner (1) may include a suction motor (42). The suction motor (42) may generate suction force. By the suction force generated by the suction motor (42), the suction port (11) may suck in dirt and / or air. By the suction force generated by the suction motor (42), the exhaust port (12) may discharge air that has been sucked into the vacuum cleaner (1) and filtered to the outside. The suction motor (42) may be positioned on the air passage formed between the suction port (11) and the exhaust port (12).

[0050] The vacuum cleaner (1) may include a driving unit (20) for driving the vacuum cleaner (1). The driving unit (20) may be mounted on the housing (10) to move the housing (10). For example, the driving unit (20) may include a pair of main wheels (21). For example, the driving unit (20) may further include at least one auxiliary wheel (22) for stable driving of the vacuum cleaner (1). The main wheels (21) and / or the auxiliary wheel (22) may be referred to as driving wheels (21, 22).

[0051] The vacuum cleaner (1) may include a battery (50). The battery (50) may be rechargeable. The battery (50) may provide the power required to operate the vacuum cleaner (1).

[0052] The vacuum cleaner (1) may include a charging terminal (51). The charging terminal (51) may be electrically connected to a battery (50). For example, while the vacuum cleaner (1) is docked at the station, the charging terminal (51) of the vacuum cleaner (1) may be electrically connected to the charging terminal of the station. As the charging terminal (51) of the vacuum cleaner (1) is electrically connected to the charging terminal of the station, the battery (50) of the vacuum cleaner (1) may be charged. That is, while the vacuum cleaner (1) is docked at the station, the battery (50) may be charged.

[0053] The vacuum cleaner (1) may include a mop (60). The mop (60) is detachably mountable to the lower part of the housing (10). The mop (60) may be rotatably mounted to the housing (10). The mop (60) may be provided to clean the surface to be cleaned by contacting the surface to be cleaned. The mop (60) can wipe away dirt from the surface to be cleaned while wet. In the drawing, two mops (60) are shown, but there is no limit to the number of mops (60). The mop (60) may be referred to as a cleaning pad (60). The mop (60) may be referred to as a wet pad (60).

[0054] The mop (60) can receive moisture from the water tank (14) of the vacuum cleaner (1). For example, if the moisture content of the mop (60) decreases while the vacuum cleaner (1) is cleaning, water stored in the water tank (14) can be supplied to the mop (60).

[0055] The vacuum cleaner (1) may include a water filling section (13). The water filling section (13) may be formed in the housing (10). The water filling section (13) may be formed on the rear side of the housing (10). For example, while the vacuum cleaner (1) is seated in the station, the water filling section (13) may receive water provided from the station. The water supplied to the vacuum cleaner (1) through the water filling section (13) may be stored in a water tank (14). While the vacuum cleaner (1) is seated in the station, the water filling section (13) of the vacuum cleaner (1) may be docked with the water supply section of the station.

[0056] The vacuum cleaner (1) may include an obstacle sensor (70). For example, the obstacle sensor (70) may be configured to detect the location of an obstacle or the distance to the obstacle. The obstacle sensor (70) may be mounted on the housing (10). For example, the obstacle sensor (70) may protrude from the upper housing (10a) of the housing (10).

[0057] The vacuum cleaner (1) may include a drum module (110) positioned in the suction port (11). The drum module (110) may strike the surface to be cleaned to scatter dirt. The dirt scattered by the drum module (110) may be introduced into the suction port (11) along with air. As an example, the drum module (110) may include a drum case (111) and a drum (119) rotatably mounted on the drum case (111).

[0058] The vacuum cleaner (1) may include a mounting bracket (100). The housing (10) may include a mounting bracket (100). A drum module (110) may be mounted on the mounting bracket (100). For example, the mounting bracket (100) may be provided to cover at least a portion of the battery (50).

[0059] FIG. 4 illustrates a drum module and a lift device mounted on a mounting bracket according to one embodiment of the present disclosure. FIG. 5 illustrates a state in which the drum module and the lift device according to one embodiment of the present disclosure are separated from the mounting bracket. FIG. 6 illustrates a disassembled lift device according to one embodiment of the present disclosure. FIG. 7 illustrates a disassembled lift device according to one embodiment of the present disclosure from a different direction than in FIG. 6.

[0060] Referring to FIGS. 4 and 5, the mounting bracket (100) may be provided to accommodate the drum module (110). The mounting bracket (100) may be provided to support the drum module (110). For example, the mounting bracket (100) may include a receiving portion (101) in which the drum driving device (113) of the drum module (110) is located.

[0061] A mounting bracket (100) may be provided to mount a lift device (120). For example, the mounting bracket (100) may include a mounting portion (102) for mounting the lift device (120). The lift device (120) may be mounted and fixed to the mounting portion (102) of the mounting bracket (100).

[0062] The mounting bracket (100) may include a battery cover portion (105). The battery cover portion (105) of the mounting bracket (100) may form a space for accommodating a battery (50).

[0063] The drum module (110) can be movably accommodated in the mounting bracket (100). The drum module (110) can be rotatably coupled to the mounting bracket (100).

[0064] The drum module (110) may include a drum case (111). The drum case (111) may be connected to a lift device (120). The drum case (111) may be provided to accommodate a drum (119). The drum case (111) may rotatably support the drum (119).

[0065] The drum module (110) may include a connecting part (112) for connecting the drum case (111) and the dust collection container (40). The connecting part (112) can guide dirt flowing into the drum case (111) to the dust collection container (40).

[0066] For example, the drum module (110) may include a lifting support (116). The lifting support (116) may be located on a first side portion connected to a lift device (120) of the drum case (111). The lifting support (116) may protrude upward from the drum case (111). The lifting support (116) may be arranged to interfere with a portion of the mounting bracket (100) when the first side portion of the drum module (110) is raised to a predetermined height by the lift device (120). The lifting support (116) may be arranged to contact the mounting bracket (100) while the second side portion of the drum module (110) is raised.

[0067] The drum module (110) may include a lift coupling portion (117) to which a lift device (120) is connected. The lift coupling portion (117) may protrude from the drum case (111). For example, the lift coupling portion (117) may include a hole or groove for inserting a part of the lift device (120). The lift coupling portion (117) may be located on a first side of the drum case (111) where the lift device (120) is located.

[0068] The drum module (110) may include a drum (119) rotatably mounted on a drum case (111). The drum (119) may strike the surface to be cleaned to scatter dirt. For example, the drum (119) may include a drum brush. The drum brush may be provided in a spiral shape on the outer surface of the drum (119). The drum brush is not limited to the meaning of a broom or brush used to sweep away dust or debris, but may have the meaning of a brush that includes sweeping or shaking. Therefore, the drum brush is not limited to a bristle shape with multiple bristles, but may include various shapes as long as it can sweep away or shake off foreign substances from the cleaning surface. As an example, the drum brush may include bristles with higher strength than a general brush to facilitate cleaning of pet hair. For example, the drum brush may include a soft or elastic blade.

[0069] The drum module (110) may include a connecting part (115) that is rotatably coupled to the drum case (111). The connecting part (115) may be rotatably coupled to a mounting bracket (100). For example, a first end of the connecting part (115) may be rotatably coupled to the drum case (111), and a second end opposite to the first end of the connecting part (115) may be rotatably coupled to the mounting bracket (100).

[0070] The vacuum cleaner (1) may include a first shaft (141) for rotatably supporting the connecting part (115) with respect to the mounting bracket (100). The vacuum cleaner (1) may include a second shaft (142) for rotatably supporting the connecting part (115) with respect to the drum case (111).

[0071] For example, the connecting part (115) may include a first connecting part (115a) coupled to a first side of the drum case (111) and a second connecting part (115b) coupled to a second side opposite to the first side of the drum case (111).

[0072] The drum case (111) may include an extension (111a) provided to be connected to a connecting part (115). For example, the extension (111a) may include a first extension (111aa) for being connected to a first connecting part (115a) and a second extension (111ab) for being connected to a second connecting part (115b).

[0073] A vacuum cleaner (1) according to one embodiment may include a lift device (120). The lift device (120) may be mounted on a mounting bracket (100). The lift device (120) may be configured to move a drum module (110). The lift device (120) may be connected to the drum module (110). The lift device (120) may be connected to a drum case (111).

[0074] The lift device (120) may be connected to a first side of the drum module (110). The lift device (120) may be connected to a first side of the drum case (111). The lift device (120) may be connected to a first side portion of the drum case (111). The lift device (120) may be connected to a portion spaced apart from the longitudinal center of the drum module (111).

[0075] The drum module (110) may include a drum drive unit (113) positioned on a second side opposite to a first side to which a lift device (120) is connected. The drum drive unit (113) may be positioned on a second side opposite to a first side of the drum module (110).

[0076] A lift device (120) may be provided on the first side of the drum module (110), and a drum driving device (113) may be provided on the second side of the drum module (110). The lift device (120) may be connected to the first side portion of the drum module (110), and the drum driving device (113) may be connected to the second side portion of the drum module (110).

[0077] For example, the drum drive device (113) may include a drum drive source (113a) and a power transmission module (113b). For example, the drum drive source (113a) may include a motor. For example, the power transmission module (113b) may include a plurality of gears.

[0078] Referring to FIGS. 5 to 7, the lift device (120) may include a lift drive source (121). For example, the lift drive source (121) may include a motor. For example, the lift drive source (121) may include a motor capable of forward rotation and reverse rotation.

[0079] The lift device (120) may include a rotating part (123) connected to the lift device (120). The rotating part (123) may be coupled to the driving source axis (121a) of the lift driving source (121). The rotating part (123) may be configured to be rotatable based on operation of the lift driving source (121).

[0080] The rotating part (123) may be provided to limit the range of rotation. For example, the rotating part (123) may include a first rotation limiting part (123a) provided to be interfered with by the mounting bracket (100) when rotated by a predetermined angle in a first direction. The first rotation limiting part (123a) may protrude from one side of the rotating part (123). For example, the rotating part (123) may include a second rotation limiting part (123b) provided to be interfered with by the mounting bracket (100) when rotated by a predetermined angle in a second direction opposite to the first direction. The second rotation limiting part (123b) may protrude from one side of the rotating part (123). The first rotation limiting part (123a) and the second rotation limiting part (123b) may protrude in the same direction from the same side of the rotating part (123).

[0081] The rotating part (123) may include a rotating support (124) to which the lifter (125) is rotatably coupled. For example, the rotating support (124) may be located on the opposite side of the one side where the first rotation limiting part (123a) and the second rotation limiting part (123b) are located.

[0082] The rotating part (123) may include a support head (124a) provided at the end of the rotating support part (124). The support head (124a) may support the lifter (125) to prevent the lifter (125) from being separated from the rotating part (123) when the lifter (125) is coupled to the rotating part (123). The support head (124a) may be provided to have a cross-section larger than the cross-section perpendicular to the longitudinal direction of the rotating support part (124).

[0083] The lift device (120) may include a lifter (125) connected to the drum module (110). The lifter (125) may be rotatably coupled to the drum module (110). The lifter (125) may be rotatably coupled to a rotating part (123).

[0084] The lifter (125) may be configured to be able to rise or fall based on the rotation of the rotating part (123). For example, based on the rotation of the rotating part (123) in a first direction by the lift drive source (121), the lifter (125) may be configured to move in a direction in which the drum module (110) rises. For example, based on the rotation of the rotating part (123) in a second direction opposite to the first direction by the lift drive source (121), the lifter (125) may be configured to fall together with the drum module (110) by the load of the drum module (110).

[0085] The lifter (125) may include a rotation hole (125a) for being coupled to a rotation support (124) of a rotation part (123). For example, the rotation hole (125a) may be provided to correspond to a support head (124a). For example, the rotation hole (125a) may be provided to have the same size and shape as the support head (124a). The rotation hole (125a) may be provided so that the support head (124a) can pass through it.

[0086] The lifter (125) may include a module connection part (126) for connecting to a drum module (110). The module connection part (126) may be rotatably coupled to the drum case (111) of the drum module (110). The module connection part (126) may be coupled to the lift connection part (117) of the drum module (110). The module connection part (126) may be rotatably inserted into the lift connection part (117).

[0087] A vacuum cleaner (1) according to one embodiment may include a position sensor (130) for detecting the position of a drum module (110). The position sensor (130) may be mounted on a mounting bracket (100). For example, the position sensor (130) may include an elastic body.

[0088] FIG. 8 partially illustrates the state of the lift device and the drum module when the drum module is lowered according to one embodiment of the present disclosure. FIG. 9 illustrates the state of the lift device and the drum module when the drum module is lowered according to one embodiment of the present disclosure from the front. FIG. 10 illustrates the state of the lift device and the drum module when the drum module is lowered according to one embodiment of the present disclosure from the side. FIG. 11 partially illustrates a cross-section along the line A-A' indicated in FIG. 9.

[0089] Referring to FIGS. 8 through 11, when the vacuum cleaner (1) sucks up foreign matter from the cleaning surface through the suction port (11), the drum module (110) may be in a lowered position. When the drum module (110) is lowered so that it is positioned close to the cleaning surface, the second rotation limiting part (123b) may come into contact with the interference part (100a) of the mounting bracket (100). As the second rotation limiting part (123b) comes into contact with the interference part (100a) of the mounting bracket (100), the lowering of the drum module (110) below a predetermined height may be restricted.

[0090] FIG. 12 partially illustrates the state of the lift device and the drum module when the drum module according to one embodiment of the present disclosure is raised. FIG. 13 illustrates the intermediate state of the lift device and the drum module while the drum module according to one embodiment of the present disclosure is being raised, from the front. FIG. 14 illustrates the state of the lift device and the drum module when the raising of the drum module according to one embodiment of the present disclosure is completed, from the front. FIG. 15 illustrates the state of the lift device and the drum module when the drum module according to one embodiment of the present disclosure is raised, from the side. FIG. 16 partially illustrates a cross-section along the line B-B' indicated in FIG. 14.

[0091] Referring to FIGS. 8 and FIGS. 12, a lift device (120) can be operated to raise a drum module (110). As the lift drive source (121) operates, a rotating part (123) can rotate. As the rotating part (123) rotates, a lifter (125) can move upward. As the lifter (125) moves upward, the drum module (110) can be raised.

[0092] Referring to FIG. 13, while the lift device (120) is operating, the first side portion of the drum module (110) connected to the lift device (120) rises before the second side portion. When the first side portion of the drum module (110) rises before the second side portion, the lifting support portion (116) of the drum module (110) comes into contact with a part of the mounting bracket (100). As the lifting support portion (116) comes into contact with a part of the mounting bracket (100), the rise of the first side portion of the drum module (110) is restricted.

[0093] When the rise of the first side portion of the drum module (110) is restricted, the second side portion of the drum module (110) rises. While the drum module (110) is being lifted by the lift device (120), the second side where the drum drive device (113) of the drum case (111) is located can be configured to rise when the first side of the drum case (111) interferes with the mounting bracket (100) and its rise is restricted.

[0094] While the second side portion of the drum module (110) is rising, the lifting support portion (116) of the drum module (110) is supported by the mounting bracket (100) and can serve as a base. For example, the drum module (110) can rotate around the lifting support portion (116) in the direction in which the second side portion rises. Referring to FIG. 14, based on the operation of the lift device (120), the second side portion of the drum module (110) rises to the same height as the first side portion.

[0095] Referring to FIG. 15, while the drum module (110) is rising, the connecting part (115) can rotate with respect to the mounting bracket (100). While the drum module (110) is rising, the connecting part (115) can rotate with respect to the extension (111a) of the drum case (111).

[0096] The drum case (111) may include a guide hole (111b) to which a second shaft (142) is rotatably and slidably coupled. The guide hole (111b) may be provided in the extension (111a). As the second shaft (142) is rotatably and slidably provided in the guide hole (111b), the connecting part (115) may be rotatable and movable relative to the drum case (111).

[0097] While the drum module (110) is rising, the second shaft (142) can rotate and slide in the guide hole (111b). As the second shaft (142) rotates and slides in the guide hole (111b) while the drum module (110) is rising, the front end and the rear end of the drum module (110) can rise to the same height. As the connecting part (115) is provided to be rotatable with respect to the mounting bracket (100) and rotatable and movable with respect to the drum case (111), while the drum module (110) is rising, one end of the drum module (110) close to the first shaft (141) which serves as the axis of rotation can rise as much as the other end of the drum module (110) far from the first shaft (141).

[0098] Referring to FIG. 15, the connecting part (115) can support the drum module (110) so that the drum module (110) does not descend when the drum module (110) is raised. The connecting part (115) can be provided to support a portion near the first shaft (141) of the drum case (111) when the drum module (110) is in a raised state. The connecting part (115) can support the extension part (111a) so that the extension part (111a) of the drum module (110) does not descend when the drum module (110) is in a raised state. According to this configuration, the vacuum cleaner (1) according to one embodiment can stably maintain the drum module (110) in a raised state.

[0099] Referring to FIG. 16, as the rotating part (123) of the lift device (120) rotates to lift the drum module (110), the first rotation limiting part (123a) comes into contact with the interference part (100a) of the mounting bracket (100). As the first rotation limiting part (123a) comes into contact with the interference part (100a) of the mounting bracket (100), the rotation of the rotating part (123) in the first direction may be restricted. As the rotation of the rotating part (123) in the first direction is restricted, the drum module (110) may be restricted from rising higher than a predetermined height.

[0100] Referring to FIGS. 8 through 11, the rotating part (123) of the lift device (120) can rotate in a second direction opposite to the first direction to lower the drum module (110). As the rotating part (123) rotates in the second direction, the lifter (125) can be lowered together with the drum module (110) by the load of the drum module (110). The rotating part (123) can be rotated until the second rotation limiting part (123b) comes into contact with the interference part (100a) of the mounting bracket (100). As the rotation of the rotating part (123) in the second direction is restricted by the second rotation limiting part (123b), the lowering of the drum module (110) to a lower height than a predetermined height may be restricted.

[0101] Referring to FIGS. 10 and 15, the connecting part (115) may be provided to guide the upward movement of the drum module (110) by the obstacle while the vacuum cleaner (1) passes through the obstacle protruding from the floor. For example, while the drum module (110) is lifted by the obstacle protruding from the floor, the connecting part (115) may rotate around the first shaft (141) to guide the upward movement of the drum module (110). While the drum module (110) is raised by the obstacle, the connecting part (115) rotates around the first shaft (141), and the second shaft (142) may slide in the guide hole (111b) of the extension part (111a). According to this configuration, the vacuum cleaner (1) according to one embodiment can allow the drum module (110) to rise in response to the obstacle and can stably maintain the state in which the drum module (110) is in close contact with the obstacle.

[0102] FIG. 17 illustrates a control block diagram of a vacuum cleaner according to one embodiment of the present disclosure.

[0103] Referring to FIG. 17, a vacuum cleaner (1) according to one embodiment may include an obstacle sensor (70), a liquid sensor (71), a position sensor (130), a battery (50), a user interface (81), a driving unit (20), a drum driving device (113), a suction motor (42), a communication unit (82) and / or a control unit (90).

[0104] The obstacle sensor (70) detects obstacles that obstruct the movement of the vacuum cleaner (1). An obstacle may refer to any object that protrudes from the floor of the cleaning area and obstructs the movement of the vacuum cleaner (1). For example, not only are tables, sofas, etc. located in the cleaning area considered obstacles, but walls that partition the space may also be considered obstacles, and objects that the vacuum cleaner (1) can climb over and descend, such as door thresholds or round bars, may also be considered obstacles.

[0105] Specifically, the obstacle sensor (70) can detect obstacles in a non-contact manner using electromagnetic waves such as infrared, visible light, or ultrasound. For example, the obstacle sensor (70) can detect infrared reflected from an obstacle after irradiating infrared, and output the intensity of the detected infrared, or the time interval (Time Of Flight: TOF) from irradiating infrared until the reflected infrared is detected, to the control unit (90).

[0106] The control unit (90) can calculate the presence of an obstacle or the distance between the obstacle and the vacuum cleaner (1) based on the output value of the obstacle sensor (70).

[0107] As another example, the obstacle sensor (70) may include a transmitter that emits electromagnetic waves and a receiver that receives electromagnetic waves reflected from the obstacle.

[0108] The transmitting unit may be provided at the front of the housing (10) and may emit electromagnetic waves toward the front of the housing (10). Additionally, depending on the embodiment, the transmitting unit may include an LED that generates electromagnetic waves and a wide-angle lens that diffuses the electromagnetic waves in all directions by refracting the emitted electromagnetic waves.

[0109] As another example, the obstacle sensor (70) may include a camera that acquires images of the vicinity of the vacuum cleaner (1) (e.g., front, rear and / or side).

[0110] The control unit (90) can calculate the presence of an obstacle or the distance between the obstacle and the cleaner (1) based on an image obtained by the obstacle sensor (70).

[0111] The liquid sensor (71) can obtain information (hereinafter 'sensor data') about the bottom area of ​​the front and / or rear of the housing (10).

[0112] In one embodiment, the liquid sensor (71) may include a camera. In this case, the sensor data collected by the liquid sensor (71) may be image data.

[0113] In one embodiment, the liquid sensor (71) may include a light-emitting part that emits light and a camera. The liquid sensor (71) may collect image data in such a way that the light-emitting part emits light and the camera acquires an image.

[0114] The liquid sensor (71) can transmit image data to the control unit (90).

[0115] In one embodiment, the liquid sensor (71) may include a transmitter that emits a predetermined signal (e.g., electromagnetic waves, light, infrared rays, etc.) and a receiver that receives a predetermined signal reflected from an obstacle. In this case, the sensor data collected by the liquid sensor (71) may be light reception data.

[0116] The transmitting part of the liquid sensor (71) is provided in the housing (10) and can transmit a predetermined signal toward the front and / or rear of the housing (10). Additionally, depending on the embodiment, the transmitting part may include a signal generating part (e.g., LED) that generates a predetermined signal and a wide-angle lens that diffuses the signal in all directions by refracting the generated signal.

[0117] The liquid sensor (71) can detect a signal reflected from an obstacle after irradiating a predetermined signal to the front and / or rear of the housing (10), and output the intensity of the detected signal or the time interval (Time Of Flight: TOF) from irradiating the predetermined signal until the reflected signal is detected to the control unit (90).

[0118] In one embodiment, the control unit (90) can identify whether the type of foreign substance corresponds to a liquid foreign substance based on sensor data.

[0119] The position sensor (130) can detect the height of the drum module (110). For example, the position sensor (130) may include a sensor (e.g., an elastic sensor) that detects mechanical deformation when the drum module (110) rises.

[0120] The battery (50) can supply power to various electrical components of the vacuum cleaner (1). The battery (50) can be charged while the vacuum cleaner (1) is seated at the station.

[0121] The vacuum cleaner (1) may include a battery sensor that detects the charge level of the battery (50).

[0122] The control unit (90) can control the driving unit (20) so that the vacuum cleaner (1) returns to the station when the charge amount of the battery (50) drops below a predetermined charge amount.

[0123] The user interface (81) may include an output interface and an input interface.

[0124] At least one output interface can transmit various information related to the operation of the vacuum cleaner (1) to the user by generating sensory information.

[0125] For example, at least one output interface can transmit information to the user regarding the settings of the vacuum cleaner (1) and the operating time of the vacuum cleaner (1). Information regarding the operation of the vacuum cleaner (1) may be output via a display, an indicator, and / or voice. At least one output interface may include, for example, a Liquid Crystal Display (LCD) panel, an indicator, a Light Emitting Diode (LED) panel, a speaker, etc.

[0126] If the display includes a touch screen display, the touch screen display may correspond to an example of an output interface and an input interface.

[0127] In one embodiment, at least one output interface can output sensory information (e.g., visual information, auditory information, etc.) related to the control of the vacuum cleaner (1).

[0128] At least one input interface can convert sensory information received from a user into an electrical signal.

[0129] At least one input interface may include a power button for turning on the power of the vacuum cleaner (1).

[0130] Each button may include a visual indicator (e.g., text, icon, etc.) that can represent its function.

[0131] At least one input interface may include, for example, a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touchpad, a touchscreen, a jog dial, and / or a microphone.

[0132] In the present disclosure, 'button' may be replaced with a UI element (User Interface Element), tact switch, push switch, slide switch, toggle switch, micro switch, touch switch, touch pad, touch screen, jog dial, and / or microphone, etc.

[0133] The vacuum cleaner (1) processes user input received through the user interface (81) and can output information related to the vacuum cleaner (1) through the user interface (81).

[0134] In one embodiment, the user interface (81) may include an input interface for receiving mop washing commands and / or mop steam commands.

[0135] If the user determines that cleaning or sterilization of the mop (60) of the vacuum cleaner (1) is necessary, the user can input a mop cleaning command and / or a mop steam command through the input interface.

[0136] The vacuum cleaner (1) can return to the station when a mop washing command and / or mop steam command is entered through the input interface.

[0137] When a mop washing command and / or mop steam command are input through the input interface, the vacuum cleaner (1) can transmit a mop washing request signal and / or mop steam request signal to the station.

[0138] Accordingly, when the vacuum cleaner (1) returns to the station and docks at the station, the station can perform a washing process (e.g., a washing process and / or a steam process).

[0139] The driving unit (20) may include a driving wheel (21, 22) provided in the housing (10) and a wheel motor that provides power to the driving wheel (21, 22).

[0140] The driving wheels (21, 22) can move the housing (10) by rotation. The housing (10) can move forward, backward, or rotate by the rotation of the driving wheels (21, 22). For example, if both left and right main wheels (21) rotate forward, the housing (10) moves straight forward, and if both left and right main wheels (21) rotate backward, the housing (10) can move straight backward.

[0141] Additionally, if the left and right main wheels (21) rotate in the same direction but at different speeds, the housing (10) moves in a curve to the right or left. If the left and right main wheels (21) rotate in different directions, the housing (10) can rotate to the left or right in place.

[0142] The wheel motor generates rotational force to rotate the driving wheels (21, 22). A DC motor or a BLDC motor may be used as the wheel motor, but the embodiment of the vacuum cleaner (1) does not limit the type of wheel motor. The same applies to other motors included in the vacuum cleaner (1) as well as the wheel motor.

[0143] The wheel motor may include a left wheel motor that rotates the left driving wheel and a right wheel motor that rotates the right driving wheel.

[0144] Each of the left and right wheel motors can operate independently of each other according to a control signal from the control unit (90), and the housing (10) can move forward, backward, or rotate depending on the operation of the left and right wheel motors.

[0145] The control unit (90) can control the movement of the vacuum cleaner (1) by controlling the driving unit (20) (e.g., wheel motor).

[0146] The drum drive device (113) can rotate the drum (119).

[0147] The control unit (90) can control the drum drive device (113) to rotate the drum (119) during dry cleaning, thereby causing foreign matter on the floor to be scattered by the drum (119).

[0148] The suction motor (42) sucks foreign matter scattered by the drum (119) into the dust collection container (40) and can rotate a suction fan that generates suction force to suck foreign matter into the dust collection container (40).

[0149] The control unit (90) can control the suction motor (42) to rotate the suction fan during dry cleaning, thereby allowing foreign matter scattered by the drum (119) to flow into the dust collection container (40) through the suction port (11).

[0150] The control unit (90) can adjust the strength of the suction motor (42). The strength of the suction motor (42) may correspond to the rotational speed of the suction motor (42) and / or the duty cycle of the suction motor (42).

[0151] The drive unit (63) may include a rotary drive unit (61) that rotates the mop (60) and / or a lifting drive unit (62) that raises or lowers the mop (60).

[0152] The control unit (90) can rotate the mop (60) by controlling the rotation drive unit (61). The rotation drive unit (61) may include a motor for rotating the mop (60) and a drive circuit for driving the motor.

[0153] The control unit (90) can raise or lower the mop (60) by controlling the lifting drive unit (62). That is, the control unit (90) can move the mop (60) by controlling the lifting drive unit (62). The lifting drive unit (62) may include an actuator capable of moving the mop (60).

[0154] The communication unit (82) can communicate with external devices (e.g., servers, user devices, stations) via wired and / or wireless connections.

[0155] The communication unit (82) can transmit data to an external device (e.g., server, user device, station) or receive data from an external device. To this end, the communication unit (82) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices, and the performance of communication through the established communication channel. According to one embodiment, the communication unit (82) may include a wireless communication module (e.g., cellular communication module, short-range wireless communication module, or GNSS (global navigation satellite system) communication module) or a wired communication module (e.g., LAN (local area network) communication module, or power line communication module). The corresponding communication module among these communication modules can communicate with an external device through a first network (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (e.g., a legacy cellular network, 5G network, next-generation communication network, the Internet, or a long-range communication network such as a computer network (e.g., LAN or WAN). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips).

[0156] A short-range wireless communication module may include, but is not limited to, Bluetooth communication modules, BLE (Bluetooth Low Energy) communication modules, Near Field Communication modules, WLAN (Wi-Fi) communication modules, Zigbee communication modules, infrared (IrDA, infrared Data Association) communication modules, WFD (Wi-Fi Direct) communication modules, UWB (ultrawideband) communication modules, Ant+ communication modules, microwave (uWave) communication modules, etc.

[0157] The remote communication module may include a communication module that performs various types of remote communication and may include a mobile communication interface. The mobile communication interface transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0158] In one embodiment, the communication unit (82) can communicate with an external device through a nearby access point (AP). The access point (AP) can connect the local network (LAN) to which the vacuum cleaner (1) is connected to a wide area network (WAN) to which the server is connected. The vacuum cleaner (1) can be connected to the server through the wide area network (WAN).

[0159] In one embodiment, the communication unit (82) can communicate wirelessly with the station.

[0160] The control unit (90) can control the overall operation of the vacuum cleaner (1).

[0161] The control unit (90) may include at least one processor (91) for controlling the operation of the vacuum cleaner (1) and at least one memory (92) for storing a program and data for controlling the operation of the vacuum cleaner (1).

[0162] At least one processor (91) controls the overall operation of the vacuum cleaner (1). Specifically, at least one processor (91) is connected to each component of the vacuum cleaner (1) to control the overall operation of the vacuum cleaner (1). For example, at least one processor (91) is electrically connected to a memory (92) to control the overall operation of the vacuum cleaner (1). The processor (91) may be composed of one or more processors.

[0163] At least one processor (91) can perform the operation of a vacuum cleaner (1) according to various embodiments by executing at least one instruction stored in memory (92).

[0164] At least one memory (92) can store data necessary for various embodiments. Depending on the purpose of data storage, the memory (92) may be implemented in the form of a memory embedded in the vacuum cleaner (1) or in the form of a memory that can be attached to and detached from the vacuum cleaner (1). For example, data for operating the vacuum cleaner (1) may be stored in a memory embedded in the vacuum cleaner (1), and data for the expansion function of the vacuum cleaner (1) may be stored in a memory that can be attached to and detached from the vacuum cleaner (1). Meanwhile, the memory embedded in the vacuum cleaner (1) can be implemented as at least one of volatile memory (e.g., DRAM (dynamic RAM), SRAM (static RAM), or SDRAM (synchronous dynamic RAM), non-volatile memory (e.g., OTPROM (one time programmable ROM), PROM (programmable ROM), EPROM (erasable and programmable ROM), EEPROM (electrically erasable and programmable ROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash), hard drive, or solid state drive (SSD). Additionally, the memory that can be attached to the vacuum cleaner (1) can be implemented in the form of a memory card (e.g., CF (compact flash), SD (secure digital), Micro-SD (micro secure digital), Mini-SD (mini secure digital), xD (extreme digital), MMC (multi-media card), etc.) or an external memory that can be connected to a USB port (e.g., USB memory).

[0165] At least one processor (91) may include one or more of a CPU (Central Processing Unit), GPU (Graphics Processing Unit), APU (Accelerated Processing Unit), MIC (Many Integrated Core), DSP (Digital Signal Processor), NPU (Neural Processing Unit), hardware accelerator, or machine learning accelerator. At least one processor (91) may control one or any combination of other components of the vacuum cleaner (1) and may perform operations or data processing related to communication. At least one processor (91) may execute at least one program or instruction stored in memory (92). For example, at least one processor (91) may perform a method according to at least one embodiment of the present disclosure by executing at least one instruction stored in memory (92).

[0166] In one embodiment, the control unit (90) may control the drive unit (63) according to a predetermined condition. Controlling the drive unit (63) may include rotating or moving the mop (60). Moving the mop (60) may include raising or lowering the mop (60).

[0167] In one embodiment, the control unit (90) can control the driving unit (20) according to a predetermined condition. Controlling the driving unit (20) may include moving the vacuum cleaner (1).

[0168] In one embodiment, the control unit (90) can control the drum drive unit (113) and / or suction motor (42) according to predetermined conditions.

[0169] In one embodiment, the control unit (90) may control the lift device (120) according to predetermined conditions. Controlling the lift device (120) may include raising or lowering the drum module (110).

[0170] For example, based on the fact that the height of the obstacle detected by the obstacle sensor (70) is lower than a predetermined height, the control unit (90) can control the lift device (120) to lift the drum module (110).

[0171] For example, based on the liquid sensor (71) detecting liquid contaminants on the cleaning surface, the control unit (90) can control the lift device (120) to lift the drum module (110).

[0172] For example, based on height information of the drum module (110) detected by the position sensor (130), the control unit (90) can control the lift device (120) to raise or lower the drum module (110). For example, if the height of the drum module (110) detected by the position sensor (130) is lower than a predetermined height, the control unit (90) can control the lift device (120) to raise the drum module (110). For example, if the height of the drum module (110) detected by the position sensor (130) is higher than a predetermined height, the control unit (90) can control the lift device (120) to lower the drum module (110).

[0173] For example, the control unit (90) can control the lift device (120) to lift the drum module (110) while operating the mop (60) through the drive unit (63).

[0174] A vacuum cleaner according to one embodiment comprises a housing including a mounting bracket, a drum module movably accommodated in the mounting bracket, and a lift device mounted on the mounting bracket, the lift device being configured to raise or lower the drum module. The drum module comprises a drum case connected to the lift device, a drum rotatably mounted in the drum case, and a connecting part rotatably coupled to the drum case and rotatably coupled to the mounting bracket.

[0175] The lift device may include a lift drive source, a rotating part rotatably coupled to the lift drive source, and a lifter rotatably coupled to the rotating part and connected to the drum module. The lift drive source, the rotating part, and the lifter may be configured so that the lifter is raised or lowered based on the rotation of the rotating part.

[0176] The lift driving source, the rotating part, and the lifter may be configured such that the lifter rises while the rotating part rotates in a first direction.

[0177] The lift drive source, the rotating part, and the lifter may be configured such that the lifter and the drum module descend by the load of the drum module while the rotating part rotates in a second direction opposite to the first direction.

[0178] The above-mentioned rotating part may include a first rotation limiting part arranged to interfere with the mounting bracket when the rotating part rotates by a predetermined angle in the first direction, and a second rotation limiting part arranged to interfere with the mounting bracket when the rotating part rotates by a predetermined angle in the second direction.

[0179] The lifter is rotatably coupled to the drum module and can be rotatably coupled to the rotating part.

[0180] The lift device may be connected to a first side of the drum case. The drum module may further include a drum drive device configured to rotate the drum on a second side opposite to the first side of the drum case.

[0181] While the drum module is being lifted by the lift device, the second side of the drum case may be configured to rise when the first side of the drum case is restricted from rising by the mounting bracket.

[0182] The above connecting part may include a first connecting part coupled to the first side of the drum case and a second connecting part coupled to the second side of the drum case.

[0183] The above vacuum cleaner may include a first shaft for rotatably supporting the connecting part with respect to the mounting bracket, and a second shaft for rotatably supporting the connecting part with respect to the drum case.

[0184] The drum case may include a guide hole. The second shaft may be configured to be rotatably and slidably coupled to the guide hole.

[0185] The above-described cleaner may further include a sensor configured to detect liquid contaminants on a cleaning surface, and a control unit configured to control the lift device to lift the drum module when the sensor detects liquid contaminants on the cleaning surface.

[0186] The above-described vacuum cleaner may further include a sensor configured to detect an obstacle on the cleaning surface, and a control unit configured to control the lift device to lift the drum module when the sensor detects the height of an obstacle lower than a predetermined height.

[0187] The above vacuum cleaner may further include a sensor mounted on the mounting bracket and configured to detect the position of the drum module, and a control unit configured to control the lift device based on the position of the drum module detected by the sensor.

[0188] The above vacuum cleaner may further include a mop detachably mounted to the housing. The lift device may be configured to lift the drum module while the mop is in operation.

[0189] A vacuum cleaner according to one embodiment includes a housing including a mounting bracket, a drum module movably accommodated in the mounting bracket, and a lift device mounted on the mounting bracket and configured to move the drum module. The lift device includes a lift driving source, a rotating part rotatable based on the operation of the lift driving source, and a lifter connected to the drum module and capable of rising or lowering based on the rotation of the rotating part.

[0190] Based on the rotation of the rotating part in a first direction by the lift driving source, the lifter may be configured to move in the direction in which the drum module rises.

[0191] Based on the fact that the rotating part rotates in a second direction opposite to the first direction by the lift driving source, the lifter may be arranged to descend together with the drum module by the load of the drum module.

[0192] The above-described cleaner may further include a sensor for detecting liquid contaminants on a cleaning surface and a control unit for controlling the lift device. The control unit may control the lift device to lift the drum module based on the sensor detecting liquid contaminants on the cleaning surface.

[0193] The drum module may include a drum case connected to the lift device, a drum rotatably mounted on the drum case, and a connecting part rotatably coupled to the drum case and rotatably coupled to the mounting bracket.

[0194] According to the concept of the present disclosure, the vacuum cleaner can be operated to separate the drum from the cleaning surface, so the usability of the drum can be improved.

[0195] According to the concept of the present disclosure, the vacuum cleaner can be operated to separate the drum from the cleaning surface, thereby reducing contamination of the drum by liquid contaminants present on the cleaning surface.

[0196] According to the concept of the present disclosure, the vacuum cleaner can be operated to separate the drum from the cleaning surface, so mobility can be improved.

[0197] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs.

[0198] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. A housing including a mounting bracket; A drum module movably accommodated in the above-mentioned mounting bracket; and A lift device mounted on the above-mentioned mounting bracket, comprising a lift device configured to raise or lower the drum module; and The above drum module is, A drum case connected to the above-mentioned lift device; A drum rotatably mounted in the above drum case; and A vacuum cleaner comprising: a connecting part rotatably coupled to the drum case and rotatably coupled to the mounting bracket.

2. In Paragraph 1, The above lift device is, Lift drive source; A rotating part rotatably coupled to the above-mentioned lift drive source; and A lifter rotatably coupled to the above-mentioned rotating part and connected to the above-mentioned drum module; comprising, A cleaner configured such that the lift drive source, the rotating part, and the lifter are configured such that the lifter is raised or lowered based on the rotation of the rotating part.

3. In Paragraph 2, A vacuum cleaner configured such that the lift drive source, the rotating part, and the lifter are configured such that the lifter rises while the rotating part rotates in a first direction.

4. In Paragraph 3, A vacuum cleaner configured such that the lift drive source, the rotating part, and the lifter are configured such that the lifter and the drum module descend by the load of the drum module while the rotating part rotates in a second direction opposite to the first direction.

5. In Paragraph 4, The above rotating part is, A first rotation limiting part arranged to interfere with the mounting bracket when the above-mentioned rotating part is rotated by a predetermined angle in the above-mentioned first direction; and A vacuum cleaner comprising: a second rotation limiting part arranged to interfere with the mounting bracket when the above-mentioned rotating part is rotated by a predetermined angle in the above-mentioned second direction.

6. In Paragraph 2, The above lifter is a vacuum cleaner rotatably coupled to the drum module and rotatably coupled to the rotating part.

7. In Paragraph 1, The above lift device is connected to the first side of the drum case, and The above drum module further comprises a drum driving device configured to rotate the drum on a second side opposite to the first side of the drum case.

8. In Paragraph 7, A vacuum cleaner configured such that while the drum module is lifted by the lift device, the second side of the drum case is raised when the first side of the drum case is restricted from rising by the mounting bracket.

9. In Paragraph 7, The above connecting part is, A first connecting part coupled to the first side of the drum case; and A vacuum cleaner comprising a second connecting part coupled to the second side of the drum case.

10. In Paragraph 1, A first shaft for rotatably supporting the above connecting part with respect to the mounting bracket; and A cleaner comprising: a second shaft for rotatably supporting the above-mentioned connecting part with respect to the drum case.

11. In Paragraph 10, The above drum case includes a guide hole, and A cleaner configured such that the second shaft is rotatably and slidably coupled to the guide hole.

12. In Paragraph 1, A sensor configured to detect liquid contaminants on a cleaning surface; and A vacuum cleaner further comprising: a control unit configured to control the lift device to lift the drum module when the sensor detects liquid contaminants on the cleaning surface.

13. In Paragraph 1, A sensor configured to detect obstacles on the cleaning surface; and A vacuum cleaner further comprising: a control unit configured to control the lift device to lift the drum module when the sensor detects the height of an obstacle lower than a predetermined height.

14. In Paragraph 1, A sensor mounted on the above-mentioned mounting bracket and configured to detect the position of the drum module; and A vacuum cleaner further comprising a control unit configured to control the lift device based on the position of the drum module detected by the sensor.

15. In Paragraph 1, It further includes a mop detachably mounted on the above housing, and The above-described lift device is a vacuum cleaner configured to lift the drum module while the mop is operating.

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