Cleaner

Abstract

This cleaner comprises: a housing including a suction port; a brush holder provided to be elastically deformed; a side brush disposed on the brush holder and provided to rotate so as to guide, toward the suction port, foreign substances on a surface being cleaned; a rotatable frame which is coupled to the side brush and rotates to rotate the side brush; a driving device which is disposed in the housing and provided to rotate the rotatable frame; and a movable frame which can be rotatably coupled to the rotatable frame, wherein, in the brush holder, the side brush, the rotatable frame, the driving device, and the movable frame, when the movable frame is coupled to the rotatable frame and the rotatable frame is rotated by the driving device, the movable frame moves vertically and pushes the brush holder to elastically deform the brush holder in order to lift the side brush, and thus, the side brush can be spaced apart from the surface being cleaned.

Description

vacuum cleaner

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

[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] The embodiments of the present disclosure provide a vacuum cleaner with improved ease of use.

[0006] Embodiments of the present disclosure provide a cleaner capable of preventing or reducing contamination of the side brush.

[0007] Embodiments of the present disclosure provide a cleaner capable of separating a side brush from a surface to be cleaned.

[0008] 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.

[0009] A vacuum cleaner according to the present disclosure may include: a housing including a suction port; a driving device disposed inside the housing; a rotatable frame rotatable by the driving device; a movable frame rotatably coupled to the rotatable frame and movable in a vertical direction by the rotation of the rotatable frame; a side brush disposed at the bottom of the housing and configured to guide foreign matter on a surface to be cleaned to the suction port; and a brush holder on which the side brush is mounted. The brush holder may be configured to lift the side brush by elastically deforming while being pressed by the movable frame.

[0010] A vacuum cleaner comprises: a housing including a suction port; a brush holder disposed at the bottom of the housing and configured to be elastically deformable; a side brush disposed in the brush holder and configured to rotate to guide foreign matter on the surface to be cleaned to the suction port; a rotatable frame coupled to the side brush and configured to rotate relative to the housing to rotate the side brush; a driving device disposed inside the housing and configured to rotate the rotatable frame; and a movable frame coupled to the rotatable frame. In the brush holder, the side brush, the rotatable frame, the driving device, and the movable frame, when the movable frame is coupled to the rotatable frame and the rotatable frame is rotated by the driving device, the movable frame may move in the vertical direction of the housing and elastically deform the brush holder to lift the side brush, thereby causing the side brush to be separated from the surface to be cleaned.

[0011] The brush holder can be positioned on the lower side of the movable frame in a vertical direction.

[0012] Based on the rotation of the above rotatable frame in a first direction, the movable frame may be configured to move upward in a vertical direction, and based on the rotation of the above rotatable frame in a second direction opposite to the first direction, the movable frame may be configured to move downward in a vertical direction to press the brush holder and elastically deform it.

[0013] A ball arranged to contact the outer side of the movable frame may further include a ball that generates a frictional force to restrict movement in the vertical direction of the movable frame as the outer side of the movable frame is contacted by the ball and the rotatable frame rotates in the second direction.

[0014] The ball is configured to allow rotation of the movable frame in the first direction and may be configured to restrict rotation of the movable frame in the second direction.

[0015] In the ball guide for receiving the ball, the ball guide may further include a ball guide configured to taper from a first stage to a second stage, widening along the first direction and narrowing along the second direction.

[0016] The above ball is supported and may further include a supporter comprising a support surface inclined downward.

[0017] The apparatus further includes a case in which the above-mentioned driving device is accommodated; wherein the supporter can be coupled to the case, and the supporter can be configured such that separation of the movable frame from the rotatable frame is prevented while the supporter is coupled to the case.

[0018] The movable frame includes a flange, and the case includes a first stopper capable of contacting the flange to restrict upward movement in the vertical direction of the movable frame, and the supporter includes a second stopper, and while the supporter is coupled to the case, the second stopper is spaced downward from the first stopper and can contact the flange to restrict downward movement in the vertical direction of the movable frame.

[0019] The brush holder comprises: a holder body portion provided to be pressed by the movable frame; an elastic portion formed on the outer surface of the holder body portion and comprising an elastic material; and a brush mounting portion including a first end connected to the elastic portion and a second end provided to mount the side brush; wherein, as the holder body portion is pressed by the movable frame, the elastic portion is elastically deformed and the second end of the brush mounting portion may be configured to move in a vertical direction.

[0020] A cover that can be coupled to the above-mentioned rotatable frame may be configured to be coupled to the above-mentioned rotatable frame and, while the above-mentioned rotatable frame rotates, to transmit the rotational force of the above-mentioned rotatable frame to the side brush and to the brush holder so that the side brush rotates.

[0021] It may further include a spring disposed between the brush holder and the cover, configured to elastically bias the brush holder upward in a vertical direction.

[0022] The rotatable frame comprises a rotatable body; and a coupling projection protruding from the outer surface of the rotatable body and formed to be inclined along the rotational direction of the rotatable frame; and the movable frame comprises a movable body; and a coupling groove recessed from the inner surface of the movable body and configured to receive the coupling projection, and when the coupling projection is inserted into the coupling groove, the movable frame may be coupled to the rotatable frame and the movable body may be arranged to surround the rotatable body.

[0023] The above driving device may include: a driving motor; a first gear rotatable based on the operation of the driving motor; a second gear engaged with the first gear to be rotatable by the rotation of the first gear; and a third gear engaged with the second gear to be rotatable by the rotation of the second gear, wherein the third gear is coupled to the rotatable frame to rotate the rotatable frame based on the rotation of the third gear.

[0024] It may include: a liquid sensor configured to detect liquid contaminants on the surface to be cleaned and generate corresponding data; and a control unit that controls the driving device to lift the side brush to separate the side brush from the surface to be cleaned based on the data generated by the sensor detecting liquid contaminants on the surface to be cleaned when the movable frame is coupled to the rotatable frame and the rotatable frame is rotated by the driving device.

[0025] A cleaning device according to the present disclosure may include: a side brush configured to sweep a surface to be cleaned; a brush holder on which the side brush is mounted; and a lift device for moving the side brush. The lift device may include: a drive motor; a rotating frame rotatable as the drive motor operates; and a moving frame disposed on the brush holder, configured to rise as the rotating frame rotates in a first direction, and configured to lower and press the brush holder as the rotating frame rotates in a second direction opposite to the first direction.

[0026] FIG. 1 shows a vacuum cleaner according to one embodiment of the present disclosure from the front.

[0027] FIG. 2 shows a vacuum cleaner according to one embodiment of the present disclosure from the rear.

[0028] FIG. 3 illustrates the lower part of a vacuum cleaner according to one embodiment of the present disclosure.

[0029] FIG. 4 is a perspective view of a brush assembly according to one embodiment of the present disclosure.

[0030] FIG. 5 is an exploded view of a brush assembly according to one embodiment of the present disclosure.

[0031] FIG. 6 is an exploded view of a brush assembly according to one embodiment of the present disclosure.

[0032] FIG. 7 is a perspective view of a rotating frame, a moving frame, a ball, and a supporter according to one embodiment of the present disclosure.

[0033] FIG. 8 is an exploded perspective view of a rotating frame, a moving frame, a ball, and a supporter according to one embodiment of the present disclosure.

[0034] FIG. 9 is an exploded cross-sectional view of a rotating frame, a moving frame, a ball, and a supporter according to one embodiment of the present disclosure.

[0035] FIG. 10 illustrates a part of a brush assembly according to one embodiment of the present disclosure.

[0036] FIG. 11 illustrates a cross-sectional view of a brush assembly according to one embodiment of the present disclosure.

[0037] FIG. 12 is a cross-sectional view of a brush assembly according to one embodiment of the present disclosure.

[0038] FIG. 13 is a front view of a vacuum cleaner according to one embodiment of the present disclosure while operating in a first mode.

[0039] FIG. 14 is a cross-sectional view of a brush assembly when a vacuum cleaner according to one embodiment of the present disclosure is operating in a first mode.

[0040] FIG. 15 is a cross-sectional view of a brush assembly when a vacuum cleaner according to one embodiment of the present disclosure is operating in a first mode.

[0041] FIG. 16 is a front view of a vacuum cleaner according to one embodiment of the present disclosure while operating in a second mode.

[0042] FIG. 17 is a cross-sectional view of a brush assembly when a vacuum cleaner according to one embodiment of the present disclosure is operating in a second mode.

[0043] FIG. 18 is a cross-sectional view of a brush assembly when a vacuum cleaner according to one embodiment of the present disclosure is operating in a second mode.

[0044] FIG. 19 is a control block diagram of a vacuum cleaner according to one embodiment of the present disclosure.

[0045] 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.

[0046] In relation to the description of the drawings, similar reference numerals may be used for similar or related components.

[0047] The singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0048] 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.

[0049] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components.

[0050] The terms "part," "module," and "component" may be implemented in hardware or software. Depending on the embodiments, a plurality of "parts," "modules," and "components" may be implemented as a single component, or a single "part," "module," or "component" may include a plurality of components.

[0051] 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).

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] The meaning of "identical" includes items that are similar in attributes or similar within a certain range. Furthermore, "identical" implies "substantially identical." In the sense of being substantially identical, numerical values ​​that fall within the margin of error in manufacturing or differences that do not hold significance relative to a reference value should be understood as being included within the scope of being "identical."

[0057] 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 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).

[0058] Embodiments according to the present disclosure will be described below with reference to the attached drawings.

[0059] 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.

[0060] 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).

[0061] 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. The suction port (11) may be formed in the housing (10). For example, the suction port (11) may be formed in the lower part of the housing (10). The suction port (11) may be formed by penetrating 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. Here, 'dirt' may include contaminants, foreign substances, dust, hair, food crumbs, adhesives, grime, etc., and these terms may be used interchangeably.

[0062] The vacuum cleaner (1) may include a dust collection container (not shown) placed inside the housing (10). Dirt and / or air sucked in through the suction port (11) may move to the dust collection container. Dirt sucked in through the suction port (11) may be collected in the dust collection container. Air sucked in through the suction port (11) may be filtered as it passes through the dust collection container. Dirt and air sucked in through the suction port (11) may be separated in the dust collection container.

[0063] The vacuum cleaner (10) may include an exhaust port (12). The exhaust port (12) may be formed in the housing (10). For example, 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.

[0064] The vacuum cleaner (1) may include a suction motor (30, see FIG. 19). The suction motor (30) may generate suction force. By the suction force generated by the suction motor (30), the suction port (11) may suck in dirt and / or air. By the suction force generated by the suction motor (30), the exhaust port (12) may discharge air that has been sucked into the vacuum cleaner (1) and filtered to the outside. The suction motor (30) may be positioned on the air passage formed between the suction port (11) and the exhaust port (12).

[0065] 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).

[0066] The vacuum cleaner (1) may include a battery (50, see FIG. 19). The battery (50) may be rechargeable. The battery (50) may provide the power required to operate the vacuum cleaner (1).

[0067] 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.

[0068] 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).

[0069] The mop (60) can receive moisture from the water tank (not shown) 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 can be supplied to the mop (60).

[0070] 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 provided 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. 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.

[0071] The vacuum cleaner (1) may include an obstacle sensor (71). For example, the obstacle sensor (71) may be configured to detect the location of an obstacle or the distance to the obstacle. The obstacle sensor (71) may be mounted on the housing (10). For example, the obstacle sensor (71) may protrude from the upper housing (10a) of the housing (10).

[0072] The vacuum cleaner (1) may include a first brush (40) positioned in the suction port (11). The first brush (40) may strike the surface to be cleaned to scatter dirt. The dirt scattered by the first brush (40) may be introduced into the suction port (11) along with air. For example, the first brush (40) may be positioned in the center of the lower part of the housing (10). The first brush (40) may be referred to as the main brush (40). The first brush (40) may be referred to as the drum brush (40).

[0073] The first brush (40) may be rotatably mounted with respect to the housing (10). The first brush (40) may be rotatably positioned in the suction port (11). The axis of rotation of the first brush (40) may be an axis extending along the approximately horizontal direction (Y direction).

[0074] The vacuum cleaner (1) may include a second brush (110). The second brush (110) may strike the surface to be cleaned to scatter dirt. The second brush (110) may be configured to sweep contaminants from the surface to be cleaned. The second brush (110) may be configured to guide foreign matter from the surface to be cleaned to the suction port (11). The second brush (110) may guide foreign matter that the first brush (40) cannot sweep to the suction port (11). The second brush (110) may pull out dust from walls, corners, and secluded areas and send it to the suction port (11). For example, the vacuum cleaner (1) may be positioned adjacent to the lower edge of the housing (10). The second brush (110) may be referred to as an auxiliary brush (110). The second brush (110) may be referred to as a side brush (110).

[0075] The second brush (110) can be rotatably mounted with respect to the housing (10). The rotation axis of the second brush (110) may be an axis extending approximately along the vertical direction (Z direction).

[0076] The vacuum cleaner (1) may include a brush assembly (90). The brush assembly (90) is detachably mountable to the housing (100). The brush assembly (90) may include a side brush (110) and components for operating the side brush (110).

[0077] FIG. 4 is a perspective view of a brush assembly according to one embodiment of the present disclosure. FIG. 5 is an exploded view of a brush assembly according to one embodiment of the present disclosure. FIG. 6 is an exploded view of a brush assembly according to one embodiment of the present disclosure.

[0078] Referring to FIGS. 4 through 6, the brush assembly (90) may include a brush module (100). The brush assembly (90) may include a lift device (200). The brush assembly (90) may include a cover (300). The brush assembly (90) may include a spring (400).

[0079] The vacuum cleaner (1) may include a side brush (110). The brush module (100) may include a side brush (110). As described above, the side brush (110) is positioned at the bottom of the housing (10) and may be configured to guide foreign matter on the surface to be cleaned to the suction port (11). The side brush (110) may be configured to sweep the surface to be cleaned.

[0080] The vacuum cleaner (1) may include a brush holder (120). The brush module (100) may include a brush holder (120). A side brush (110) may be mounted on the brush holder (120). The brush holder (120) may be elastically deformed to lift the side brush (110). The brush holder (120) may include an elastic material. For example, a part of the brush holder (120) may be made of an elastic material, or the entire brush holder (120) may be made of an elastic material.

[0081] For example, the brush holder (120) may include a holder body part (121), an elastic part (122), and a brush mounting part (123). As will be described later, the holder body part (121) may be provided to be pressed by a movable frame (240). The holder body part (121) may include a roughly hollow cylindrical shape. The elastic part (122) may be formed on the outer surface of the holder body part (121). The elastic part (122) may include an elastic material. The elastic part (122) may be formed between the holder body part (121) and the brush mounting part (123). The thickness of the elastic part (122) may be configured to be thinner than that of the holder body part (121) and the brush mounting part (123). Here, the thickness may include a height along the vertical direction. The brush mounting portion (123) may include a first end (1231) connected to the elastic portion (122) and a second end (1232) provided to mount the side brush (110). The elastic portion (122) and the brush mounting portion (123) may be provided in multiple numbers, and the number of elastic portions (122) and the number of brush mounting portions (123) may match the number of side brushes (110). However, according to the present disclosure, there is no limitation on the number of side brushes (110), elastic portions (122), and brush mounting portions (123).

[0082] The vacuum cleaner (1) may include a drive unit (210). The lift device (200) may include a drive unit (210). The drive unit (210) may be placed inside the housing (10). The drive unit (210) may not be exposed outside the housing (10). The drive unit (210) may operate (e.g., rotate, lift) the brush module (100).

[0083] The driving device (210) may include a driving motor (211). The driving motor (211) may generate power to rotate or move the brush module (100) up and down.

[0084] The drive unit (210) may include at least one gear (212). At least one gear (212) can transmit power from the drive motor (211) to the rotating frame (230) to be described later.

[0085] For example, the drive unit (210) may include a first gear (2121), a second gear (2122), and a third gear (2123). The first gear (2121) may be configured to be rotatable based on the operation of the drive motor (211). The second gear (2122) may be configured to mesh with the first gear (2121). The second gear (2122) may be configured to be rotatable by the first gear (2121). The third gear (2123) may be configured to mesh with the second gear (2122). The third gear (2123) may be configured to be rotatable by the second gear (2122). The third gear (2123) may be coupled to a rotating frame (230). The third gear (2123) may be coupled to the first end (2301) of the rotating frame (230) to transmit rotational force generated by the drive motor (210) to the rotating frame (230). For example, a fastening member (S1) may be coupled to the fastening hole (212a) of the third gear (2123) and the fastening hole formed in the first end (2301) of the rotating frame (230). The third gear (2123) and the first end (2301) of the rotating frame (230) may be coupled within a case hole (2222). Although the drawing shows an example in which the drive device (210) includes three gears (2121, 2122, 2123), the present disclosure is not limited thereto and there is no limitation on the number of gears (212).

[0086] The vacuum cleaner (1) may include a case (220). The lift device (200) may include a case (220). The case (220) may be provided to accommodate a drive device (210). Components for rotating and / or moving the side brush (110) may be mounted in the case (220). For example, the case (220) may be equipped with a rotating frame (230), a moving frame (240), a supporter (260), and a ball (250).

[0087] For example, the lift device (200) may include a first case (221) and a second case (222). The first case (221) may cover the upper portion of the second case (222). The first case (221) and the second case (222) may be detachably coupled. The first case (221) may include a first case coupling portion (221a), and the second case (222) may include a second case coupling portion (222a). A fastening member (S3) may be fastened to the first case coupling portion (221a) and the second case coupling portion (222a). However, the present disclosure is not limited to the examples described above, and the first case (221) and the second case (222) may be formed integrally.

[0088] The vacuum cleaner (1) may include a ball guide (223). The lift device (200) may include a ball guide (223). The case (220) may include a ball guide (223). The ball guide (223) may be formed in a second case (222). The ball guide (223) may accommodate a ball (250). The ball (250) may be configured to be movable within the ball guide (223).

[0089] The vacuum cleaner (1) may include a rotating frame (230). The lift device (200) may include a rotating frame (230). A first end (2301) of the rotating frame (230) may be connected to a driving device (210). A second end (2302) of the rotating frame (230) may be connected to a cover (300).

[0090] The rotating frame (230) may be configured to be rotatable by a driving device (210). The rotating frame (230) may be configured to be rotatable as the driving motor (211) operates. For example, the rotating frame (230) may be coupled to a third gear (2123) and configured to rotate together with the third gear (2123). The rotating frame (230) and the third gear (2123) may share a rotation axis. The rotating frame (230) may be configured to transmit rotational force to the cover (300). The rotating frame (230) may be coupled to the cover (300) and configured to rotate together with the cover (300). The rotating frame (230) and the cover (300) may share a rotation axis.

[0091] The rotating frame (230) may be referred to as a rotating part (230), a rotating member (230), a rotating shaft (230), etc.

[0092] The vacuum cleaner (1) may include a moving frame (240). The lift device (200) may include a moving frame (240). The moving frame (240) may be configured to be rotatably coupled to the rotating frame (230). The moving frame (240) may be configured to be movable relative to the rotating frame (230). The moving frame (240) may be configured to be movable in the vertical direction by the rotation of the rotating frame (230). The moving frame (240) may move along the up and down direction relative to the rotating frame (230). The moving frame (240) may move upward or downward while rotating relative to the rotating frame (230). As will be described later, the moving frame (240) may press the brush holder (120) while moving downward relative to the rotating frame (230).

[0093] The moving frame (240) may be referred to as a moving part (240), a moving member (240), a pressing part (240), a pressing member (240), etc.

[0094] The vacuum cleaner (1) may include a ball (250). The lift device (200) may include a ball (250). The ball (250) may be received in a ball guide (223). The ball (250) may be placed on the outside of the movable frame (240). The ball (250) may be configured to allow rotation of the movable frame (240) or to restrict (or inhibit) the rotation of the movable frame (240). In this case, restricting (or inhibiting) the rotation of the movable frame (240) may include not only completely preventing the rotation of the movable frame (240) but also applying force to hinder the smooth rotation of the movable frame (240). The ball (250) may restrict (or inhibit) the rotation of the movable frame (240) so as to generate frictional force by contacting the movable frame (240). The frictional force generated between the ball (250) and the movable frame (240) can cause the movable frame (240) to move downward and generate a force that presses the brush holder (120) downward. A detailed explanation of this will be provided later.

[0095] The vacuum cleaner (1) may include a supporter (260). The lift device (200) may include a supporter (260). The supporter (260) may be provided to support a ball (250). The supporter (260) may be provided to support a movable frame (240).

[0096] The supporter (260) may be detachably coupled to the case (220). The supporter (260) may be detachably coupled to the second case (222). As the supporter (260) is coupled to the case (220), the rotating frame (230), the moving frame (240), and the ball (250) may be mounted on the case (220). While the supporter (260) is coupled to the case (220), the supporter (260) may be configured to prevent the moving frame (240) from being separated from the rotating frame (230). For example, the supporter (260) may include a hook (262), and the second case (222) may include a hook groove (222b). The hook (262) of the supporter (260) may be coupled to the hook groove (222b) of the second case (222). The hook (262) of the supporter (260) can be inserted into the hook groove (222b) of the second case (222).

[0097] The vacuum cleaner (1) may include a cover (300). The cover (300) may be configured to be coupled to a rotating frame (230). The cover (300) may be coupled to a second end (2302) of the rotating frame (230). For example, a fastening member (S2) may be coupled to a fastening hole (330) of the cover (300) and a fastening hole formed in the second end (2302) of the rotating frame (230).

[0098] The cover (300) may be configured to be rotatable by a rotating frame (230). A brush holder (120) may be mounted on the cover (300). While the cover (300) is coupled to the rotating frame (230) and the brush holder (120) is mounted on the cover (300), the cover (300) may be configured to transmit the rotational force of the rotating frame (230) to the brush holder (120). As the cover (300) rotates, the brush holder (120) and the side brush (110) mounted on the brush holder (120) may rotate. The cover (300), the brush holder (120), and the side brush (110) may be configured to rotate together with the rotating frame (230).

[0099] For example, the cover (300) may include a cover base (310) and a cover side wall (320) extending upward from the cover base (310). A spring (400) may be placed in the space formed by the cover base (310) and the cover side wall (320). The cover (300) may include a holder mounting portion (340) formed on the cover side wall (320) for mounting a brush holder (120).

[0100] The vacuum cleaner (1) may include a spring (400). The spring (400) may be placed between the brush holder (120) and the cover (300). The spring (400) may be placed on the cover base (310). The spring (400) may be configured to elastically bias the brush holder (120) upward. The spring (400) may prevent the brush holder (120) from sagging. For example, when the moving frame (240) moves downward to press the brush holder (120) and then moves upward, the spring (400) may apply an elastic force to the brush holder (120), and the brush holder (120) may return to its original position.

[0101] FIG. 7 is a perspective view of a rotating frame, a moving frame, a ball, and a supporter according to one embodiment of the present disclosure. FIG. 8 is an exploded perspective view of a rotating frame, a moving frame, a ball, and a supporter according to one embodiment of the present disclosure. FIG. 9 is an exploded cross-sectional view of a rotating frame, a moving frame, a ball, and a supporter according to one embodiment of the present disclosure.

[0102] Referring to FIGS. 7 through 9, the rotating frame (230) and the moving frame (240) can be detachably coupled. The supporter (260) can support the ball (250) and the moving frame (240).

[0103] The rotating frame (230) may be configured to be rotatable in a first direction (R1). The rotating frame (230) may be configured to be rotatable in a second direction (R2) opposite to the first direction (R1). Although the drawing shows the first direction (R1) as counterclockwise and the second direction (R2) as clockwise, the present disclosure is not limited thereto, and the first direction (R1) and the second direction (R2) may be opposite to each other.

[0104] The rotating frame (230) may include a rotating body (231) and a connecting projection (232). The connecting projection (232) may be formed on the outer surface of the rotating body (231). The connecting projection (232) may protrude from the outer surface of the rotating body (231). The connecting projection (232) may be formed to be inclined along the rotational direction of the rotating frame (230). For example, the connecting projection (232) may be configured to be inclined downward along a first direction (R1).

[0105] The movable frame (240) can be rotatably coupled to the rotating frame (230). As described above, the movable frame (240) can move in a direction perpendicular to the rotating frame (230) while rotating by the rotation of the rotating frame (230). The rotating frame (230) can be positioned inside the movable frame (240).

[0106] The movable frame (240) may include a movable body (241) and a coupling groove (242). The movable body (241) may be configured to surround the rotating body (231). The coupling groove (242) may be formed on the inner surface of the movable body (241). The coupling groove (242) may be recessed from the inner surface of the movable body (241). A coupling projection (232) may be inserted into the coupling groove (242). The coupling groove (242) may be formed to correspond to the coupling projection (232). The coupling groove (242) may be configured to be inclined along the rotational direction of the rotating frame (230). For example, the coupling groove (242) may be configured to be inclined downward along a first direction (R1).

[0107] The supporter (260) may include a support surface (261). The support surface (261) may be configured to be inclined along the rotational direction of the rotating frame (230). The support surface (261) may be inclined downward. For example, the support surface (261) may be inclined downward along the second direction (R2). For example, the inclination direction of the support surface (261) may be opposite to the inclination direction of the coupling projection (232) and the inclination direction of the coupling groove (242).

[0108] For example, the supporter (260) may include a supporter body (264) having a roughly hollow shape. A support surface (261) may protrude upward from the supporter body (264). A hook (262) may protrude upward from the supporter body (264). The support surface (261) and the hook (262) may each be provided in multiple numbers, and the multiple support surfaces (261) and multiple hooks (262) may be arranged alternately.

[0109] The ball (250) may be positioned on the outside of the movable frame (240). The ball (250) may be configured to be in contact with the outer surface of the movable body (241). The ball (250) may be positioned on the support surface (261) of the supporter (260). The ball (250) may be configured to be movable along the support surface (261) of the supporter (260). The ball (250) may be induced to move along a second direction (R2) by the inclination of the support surface (261) of the supporter (260).

[0110] For example, the balls (250) and support surfaces (261) may be provided in multiple numbers, and the number of balls (250) and the number of support surfaces (261) may match. In the drawings, the balls (250) and support surfaces (261) are each shown as being provided in three numbers, but the present disclosure is not limited thereto. The balls (250) and support surfaces (261) may each be provided in one number.

[0111] FIG. 10 illustrates a portion of a brush assembly according to one embodiment of the present disclosure. FIG. 11 illustrates a portion of a brush assembly according to one embodiment of the present disclosure in a cutaway view. FIG. 12 is a planar cross-sectional view of a brush assembly according to one embodiment of the present disclosure.

[0112] Referring to FIGS. 10 to 12, the rotational force of the driving device (210) can be transmitted to the rotating frame (230). The rotational force of the rotating frame (230) can be transmitted to the cover (300). The rotational force of the cover (300) can be transmitted to the brush holder (120) and the side brush (110) mounted on the brush holder (120). At least one gear (212) of the driving device (210) (e.g., a third gear (2123)) can be coupled to the first end (2301) of the rotating frame (230), and the cover (300) can be coupled to the second end (2302) of the rotating frame (230). Thus, based on the operation of the driving motor (211), at least one gear (212), the rotating frame (230), the cover (300), the brush holder (120), and the side brush (110) can rotate. The side brush (110) can be configured to rotate and strike or sweep away foreign matter on the surface to be cleaned.

[0113] The rotating frame (230) and the moving frame (240) can be rotatably coupled. As the rotating frame (230) rotates, the moving frame (240) can move along the vertical direction. In order for the moving frame (240) to move up and down by the rotation of the rotating frame (230), the coupling projection (232) of the rotating frame (230) and the coupling groove (242) of the moving frame (240) can be formed at an angle along the direction of rotation. For example, the coupling projection (232) and the coupling groove (242) may have a shape that slopes downward along the first direction (R1). For example, the coupling projection (232) and the coupling groove (242) may have a roughly spiral shape.

[0114] Thus, when the rotating frame (230) rotates in the first direction (R1), the moving frame (240) can naturally rise, and when the rotating frame (230) rotates in the second direction (R2), the moving frame (240) can naturally lower. However, in order for the moving frame (240) to lower and press the brush holder (120), it may be difficult to provide sufficient force using only the weight of the moving frame (240). Therefore, the lift device (200) uses a ball (250) to apply frictional force to the moving frame (240), thereby enabling the moving frame (240) to press the brush holder (120) downward more effectively.

[0115] The ball guide (223) can accommodate a ball (250). The ball (250) can be configured to be movable within the ball guide (223). The ball guide (223) can be configured to widen along a first direction (R1) and narrow along a second direction (R2) (see FIG. 12). The ball guide (223) can be extended along the first direction (R1). The ball guide (223) can be tapered along the second direction (R2). The first end (2231) of the ball guide (223) can be larger than the second end (2232) of the ball guide (223).

[0116] The supporter (260) can support a ball (250) received in a ball guide (223). For example, the support surface (261) of the supporter (260) may be configured to be inclined upward along a first direction (R1) (see FIGS. 7 to 9). For example, the support surface (261) of the supporter (260) may be configured to be inclined downward along a second direction (R2) (see FIGS. 7 to 9).

[0117] With the shape of the ball guide (223) and the support surface (261) described above, when the rotating frame (230) rotates in the first direction (R1), no frictional force may be generated between the ball (250) and the moving frame (240).

[0118] For example, as the rotating frame (230) rotates in the first direction (R1), the moving frame (240) may receive a force rotating in the first direction (R1) from the rotating frame (230), and the ball (250) may move toward the wide side of the ball guide (223) (toward the first end (2231). After or while moving toward the wide side of the ball guide (223) (toward the first end (2231)), the ball (250) may be guided toward the narrow side of the ball guide (223) (toward the second end (2232)) by the inclination of the support surface (261). The ball (250) may always be in a state where it can move toward the wide side of the ball guide (223). Thus, when the rotating frame (230) rotates in the first direction (R1), the ball (250) can be configured so as not to restrict the movable frame (240) from rotating in the first direction (R1).

[0119] With the shape of the ball guide (223) and the support surface (261) described above, when the rotating frame (230) rotates in the second direction (R2), frictional force may be generated between the ball (250) and the moving frame (240).

[0120] For example, as the rotating frame (230) rotates in the second direction (R2), the moving frame (240) may receive a force rotating in the second direction (R2) from the rotating frame (230), and the ball (250) may move toward the narrow side of the ball guide (223) (toward the second end (2232). Additionally, the ball (250) may be guided toward the narrow side of the ball guide (223) (toward the second end (2232)) by the inclination of the support surface (261). The ball (250) may move toward the narrow side of the ball guide (223) and then stop. The ball (250) may interfere with the moving frame (240). Thus, when the rotating frame (230) rotates in the second direction (R2), the ball (250) may be configured to restrict the moving frame (240) from rotating in the second direction (R2).

[0121] Meanwhile, the moving frame (240) can move along the vertical direction, and the vacuum cleaner (1) may include a structure for limiting the range of movement of the moving frame (240). For example, the moving frame (240) may include a flange (243), the case (220) may include a first stopper (224), and the supporter (260) may include a second stopper (263).

[0122] A flange (243) may be formed on the outer surface of the movable body (241) (see FIGS. 7 to 9). For example, the flange (243) may protrude from the outer surface of the movable body (241). For example, the flange (243) may have a shape that extends along the circumferential direction of the movable body (241).

[0123] The first stopper (224) may be configured to be in contact with the flange (243) to restrict the upward movement of the movable frame (240). When the movable frame (240) is in a maximally raised state, the flange (243) may interfere with the first stopper (224). While the flange (243) and the first stopper (224) are interfering, the movable frame (240) may not move further upward.

[0124] The second stopper (263) may be configured to be in contact with the flange (243) to restrict the downward movement of the movable frame (240). When the movable frame (240) is in a maximum lowered state, the flange (243) may interfere with the second stopper (263). While the flange (243) and the second stopper (263) are interfering, the movable frame (240) may not move further downward.

[0125] FIG. 13 is a front view of a vacuum cleaner according to one embodiment of the present disclosure while operating in a first mode. FIG. 14 is a plan cross-sectional view of a brush assembly when the vacuum cleaner according to one embodiment of the present disclosure is operating in a first mode. FIG. 15 is a front cross-sectional view of a brush assembly when the vacuum cleaner according to one embodiment of the present disclosure is operating in a first mode. FIG. 16 is a front view of a vacuum cleaner according to one embodiment of the present disclosure while operating in a second mode. FIG. 17 is a plan cross-sectional view of a brush assembly when the vacuum cleaner according to one embodiment of the present disclosure is operating in a second mode. FIG. 18 is a front cross-sectional view of a brush assembly when the vacuum cleaner according to one embodiment of the present disclosure is operating in a second mode.

[0126] Referring to FIGS. 13 through 18, a vacuum cleaner (1) according to one embodiment of the present disclosure may operate in a first mode (M1) or a second mode (M2). The vacuum cleaner (1) may be configured to be switchable between the first mode (M1) and the second mode (M2). The vacuum cleaner (1) may be configured to switch from the first mode (M1) to the second mode (M2) under preset conditions. For example, if liquid contaminants or obstacles (e.g., carpet, etc.) are detected during the cleaning operation of the vacuum cleaner (1), the vacuum cleaner (1) may switch from the first mode (M1) to the second mode (M2).

[0127] Referring to FIGS. 13 to 15, the vacuum cleaner (1) can operate in a first mode (M1). When the vacuum cleaner (1) operates in the first mode (M1), the side brush (110) may be lowered or maintained in a lowered state. The side brush (110) may come into contact with the surface to be cleaned (C) and may be configured to strike or sweep foreign matter on the surface to be cleaned (C). For example, the first mode (M1) of the vacuum cleaner (1) may be a general cleaning mode of the vacuum cleaner (1).

[0128] While the vacuum cleaner (1) is operating in the first mode (M1), the rotating frame (230) can rotate in the first direction (R1).

[0129] Based on the rotation of the rotating frame (230) in the first direction (R1), the movable frame (240) may be configured to move upward (see arrow in FIG. 15). As the rotating frame (230) rotates in the first direction (R1), the movable frame (240) may rise while rotating in the first direction (R1) together with the rotating frame (230). When the movable frame (240) has risen to its maximum height, the flange (243) of the movable frame (240) may interfere with the first stopper (224). At this time, the movable frame (240) may no longer rise and may rotate in the first direction (R1) together with the rotating frame (230).

[0130] As the moving frame (240) rises, the spring (400) can elastically bias the brush holder (120) upward. The brush holder (120) can move upward due to the elastic restoring force of the spring (400).

[0131] The ball (250) can be configured to allow the movable frame (240) to rotate in a first direction (R1). While the rotating frame (230) rotates in the first direction (R1), no frictional force may be generated between the ball (250) and the movable frame (240). The ball (250) can move along the first direction (R1) within the ball guide (223) by the movable frame (240) and can move along the second direction (R2) by being guided by the support surface (261). That is, the ball (250) can move toward the wide side of the ball guide (223) (toward the first end (2231)) and can be guided toward the narrow side of the ball guide (223) (toward the second end (2232)) by the inclination of the support surface (261). The ball (250) can repeat movement within the ball guide (223). That is, while the rotating frame (230) rotates in the first direction (R1), the ball (250) can always move within the ball guide (223) and may not interfere with the rotation of the moving frame (240) in the first direction (R1). For example, when the rotating frame (230) rotates in the first direction (R1), a gap may be formed between the moving frame (240) and the ball (250). Thus, the moving frame (240) can freely rotate in the first direction (R1). That is, the rotation of the moving frame (240) in the first direction (R1) may not be constrained by the ball (250).

[0132] Referring to FIGS. 16 to 18, the vacuum cleaner (1) can operate in a second mode (M2). When the vacuum cleaner (1) operates in the second mode (M2), the side brush (110) may be raised or maintained in a raised state. The side brush (110) may not come into contact with the surface to be cleaned (C). The side brush (110) may be spaced apart from the surface to be cleaned (C). For example, the second mode (M2) of the vacuum cleaner (1) may be a liquid detection mode.

[0133] While the vacuum cleaner (1) is operating in the second mode (M2), the rotating frame (230) can rotate in the second direction (R2).

[0134] Based on the rotation of the rotating frame (230) in the second direction (R2), the moving frame (240) may be configured to move downward (see arrow in FIG. 18). As the rotating frame (230) rotates in the second direction (R2), the moving frame (240) may descend while rotating in the second direction (R2) together with the rotating frame (230). When the moving frame (240) has descended to its maximum extent, the flange (243) of the moving frame (240) may interfere with the second stopper (263). At this time, the moving frame (240) may not descend further.

[0135] Based on the rotation of the rotating frame (230) in the second direction (R2), the moving frame (240) may be configured to move downward and press the brush holder (120). The brush holder (120) may be positioned below the moving frame (240). The moving frame (240) may be positioned above the brush holder (120). The moving frame (240) may press the brush holder (120) downward. While the brush holder (120) is pressed by the moving frame (240), the brush holder (120) may be elastically deformed. The brush holder (120) may be configured to lift the side brush (110) by being elastically deformed by the moving frame (240). The brush holder (120) may move the side brush (110) upward away from the surface to be cleaned (C).

[0136] For example, as the holder body portion (121) is pressed by the movable frame (240), the second end (1232) of the brush mounting portion (123) can be moved upward by the elastic portion (122). The movable frame (240) can press the holder body portion (121) downward. The elastic portion (122) can be elastically deformed. A portion of the elastic portion (122) can be folded. As the elastic portion (122) is elastically deformed, at least a portion of the brush mounting portion (123) can be raised, and the side brush (110) mounted on the brush mounting portion (123) can be lifted.

[0137] While the moving frame (240) presses the brush holder (120), the spring (400) can be compressed by the brush holder (120). The spring (400) can be compressed in the space between the holder body (210) and the cover (300).

[0138] The ball (250) can be configured to restrict the rotation of the movable frame (240) in the second direction (R2). While the rotating frame (230) rotates in the second direction (R2), frictional force may be generated between the ball (250) and the movable frame (240). As the rotating frame (230) rotates in the second direction (R2), the ball (250) may come into contact with the movable frame (240) on the outside of the movable frame (240) to generate frictional force. The ball (250) can move along the second direction (R2) within the ball guide (223) by the movable frame (240). The ball (250) can move along the second direction (R2) by being guided by the support surface (261). That is, the ball (250) can be guided toward the narrow side of the ball guide (223) (toward the second end (2232)). The ball (250) can be guided in the second direction (R2) within the ball guide (223) and then stopped. That is, while the rotating frame (230) is rotating in the second direction (R2), the ball (250) can interfere with the moving frame (240) and hinder the rotation of the moving frame (240) in the second direction (R2). For example, when the rotating frame (230) is rotating in the second direction (R2), there may be no gap between the moving frame (240) and the ball (250). As a result, the moving frame (240) may not be able to freely rotate in the second direction (R2). That is, the rotation of the moving frame (240) in the second direction (R2) may be constrained by the ball (250).

[0139] FIG. 19 is a control block diagram of a vacuum cleaner according to one embodiment of the present disclosure.

[0140] Referring to FIG. 19, a vacuum cleaner (1) according to one embodiment of the present disclosure may include an obstacle sensor (71), a liquid sensor (72), a battery (50), a user interface (83), a communication unit (84), a driving unit (20), a suction motor (30), a mop driving unit (61), a lift device (200) and / or a control unit (80).

[0141] The obstacle sensor (71) can detect 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, furniture such as tables and sofas located in the cleaning area, as well as walls that partition the space, may 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.

[0142] For example, the obstacle sensor (71) can detect obstacles in a non-contact manner using electromagnetic waves such as infrared, visible light, or ultrasound. For example, the obstacle sensor (71) 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 (80). The control unit (80) 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 (71).

[0143] For example, the obstacle sensor (71) may include a transmitter that emits electromagnetic waves and a receiver that receives electromagnetic waves reflected from the obstacle. The transmitter may be provided at the front of the housing (10) and emit electromagnetic waves toward the front of the housing (10). Additionally, depending on the embodiment, the transmitter 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.

[0144] For example, the obstacle sensor (71) may include a camera that acquires images of the vicinity of the vacuum cleaner (1) (e.g., front, rear and / or side). The control unit (80) may calculate the presence of an obstacle or the distance between the obstacle and the vacuum cleaner (1) based on the images acquired by the obstacle sensor (71).

[0145] The liquid sensor (72) may be configured to detect liquid contaminants on the surface to be cleaned. The liquid sensor (72) may acquire information (hereinafter 'sensor data') about the bottom area of ​​the front and / or rear of the housing (10).

[0146] For example, the liquid sensor (72) may include a camera. In this case, the sensor data collected by the liquid sensor (72) may be image data.

[0147] For example, the liquid sensor (72) may include a light-emitting unit that emits light and a camera. The liquid sensor (72) may collect image data in such a way that the light-emitting unit emits light and the camera acquires an image. The liquid sensor (72) may transmit the image data to the control unit (80).

[0148] For example, the liquid sensor (72) may include a transmitter that emits a predetermined signal (e.g., electromagnetic waves, light, infrared, etc.) and a receiver that receives a predetermined signal reflected from an obstacle. In this case, the sensor data collected by the liquid sensor (72) may be light reception data. The transmitter of the liquid sensor (72) may be provided in the housing (10) and may emit a predetermined signal toward the front and / or rear of the housing (10). Additionally, depending on the embodiment, the transmitter may include a signal generator (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.

[0149] For example, the liquid sensor (72) 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 (80).

[0150] The control unit (80) can identify whether the type of foreign substance on the surface to be cleaned corresponds to a liquid foreign substance based on sensor data obtained by the liquid sensor (72).

[0151] 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. The vacuum cleaner (1) may include a battery sensor that detects the charge level of the battery (50).

[0152] The control unit (80) can control the driving unit (20) so that the vacuum cleaner (1) returns to the station when the charge level of the battery (50) drops below a predetermined charge level.

[0153] The user interface (83) may include at least one output interface and at least one input interface.

[0154] At least one input interface can convert sensory information received from a user into an electrical signal.

[0155] For example, at least one input interface may include 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.

[0156] At least one output interface can visually or audibly convey information related to the operation of the vacuum cleaner (1) to the user.

[0157] 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. For example, at least one output interface may include a Liquid Crystal Display (LCD) panel, an indicator, a Light Emitting Diode (LED) panel, a speaker, etc.

[0158] The vacuum cleaner (1) can process user input received through the user interface (83) and output information related to the vacuum cleaner (1) through the user interface (83).

[0159] The communication unit (84) can communicate with external devices (e.g., servers, user devices, home appliances, stations) via wired and / or wireless connections.

[0160] The communication unit (84) can transmit data to an external device or receive data from an external device. To this end, the communication unit (84) 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 (84) may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a GNSS (global navigation satellite system) communication module) or a wired communication module (e.g., a LAN (local area network) communication module, or a 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, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a 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).

[0161] 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.

[0162] 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.

[0163] The communication unit (84) can communicate with external devices 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 the 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).

[0164] 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).

[0165] 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 in a straight line forward, and if both left and right main wheels (21) rotate backward, the housing (10) can move in a straight line backward. 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.

[0166] 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.

[0167] 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. Each of the left and right wheel motors may operate independently of each other according to a control signal from the control unit (80), and the housing (10) may move forward, backward, or rotate depending on the operation of the left and right wheel motors.

[0168] The control unit (80) can control the movement of the vacuum cleaner (1) by controlling the driving unit (20) (e.g., wheel motor).

[0169] The suction motor (30) can rotate a suction fan to generate suction force for sucking foreign matter scattered by at least one brush (40 and / or 110) into a dust collector.

[0170] The control unit (80) can control the ON / OFF, strength, rotational speed, etc. of the suction motor (30).

[0171] The mop drive unit (61) may include a rotary drive unit that rotates the mop (60) and / or a lifting drive unit that raises or lowers the mop (60).

[0172] The control unit (80) can rotate the mop (60) by controlling the rotation drive unit. The rotation drive unit may include a motor for rotating the mop (60) and a drive circuit for driving the motor.

[0173] The control unit (80) can raise or lower the mop (60) by controlling the lifting drive unit. That is, the control unit (80) can move the mop (60) by controlling the lifting drive unit. The lifting drive unit may include an actuator capable of moving the mop (60).

[0174] The lift device (200) may be configured to raise or lower the side brush (110). The lift device (200) may include a drive device (210). The drive device (210) may include a drive motor (211) and a power transmission device (e.g., at least one gear (212)) for transmitting power generated from the drive motor (211) to a rotating frame (230).

[0175] The control unit (80) can control the drive unit (210) to rotate or raise the side brush (110). The control unit (80) can control the drive unit (210) so that the vacuum cleaner (1) operates in a first mode (M1) or a second mode (M2). The control unit (80) can control the drive unit (210) to move the side brush (110) away from the floor based on satisfying a preset condition.

[0176] For example, the control unit (80) can control the drive unit (210) to lift the side brush (110) based on the liquid sensor (72) detecting liquid contaminants on the surface to be cleaned. Specifically, the control unit (80) can control the drive motor (211) so that the rotating frame (230) rotates in a second direction (R2). In this way, the side brush (110) does not come into contact with the surface to be cleaned (C) and can be not contaminated by liquid contaminants.

[0177] The control unit (80) can control the overall operation of the vacuum cleaner (1).

[0178] The control unit (80) may include at least one processor (81) for controlling the operation of the vacuum cleaner (1) and at least one memory (82) for storing a program and data for controlling the operation of the vacuum cleaner (1).

[0179] At least one processor (81) controls the overall operation of the vacuum cleaner (1). Specifically, at least one processor (81) 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 (81) is electrically connected to a memory (82) to control the overall operation of the vacuum cleaner (1). The processor (81) may be composed of one or more processors.

[0180] At least one processor (81) can perform the operation of the vacuum cleaner (1) according to various embodiments by executing at least one instruction stored in memory (82).

[0181] At least one memory (82) can store data required for various embodiments. Depending on the purpose of data storage, the memory (82) 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) may 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) may 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).

[0182] At least one processor (81) 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 (81) may control one or any combination of other components of the cleaner (1) and may perform operations or data processing related to communication. At least one processor (81) may execute at least one program or instruction stored in memory (82). For example, at least one processor (81) may perform a method according to at least one embodiment of the present disclosure by executing at least one instruction stored in memory (82).

[0183] According to one embodiment of the present disclosure, the control unit (80) can control the driving unit (20) according to a predetermined condition. Controlling the driving unit (20) may include moving the vacuum cleaner (1).

[0184] According to one embodiment of the present disclosure, the control unit (80) can control the suction motor (30) according to a predetermined condition. Controlling the suction motor (30) may include adjusting the strength of the suction motor (30).

[0185] According to one embodiment of the present disclosure, the control unit (80) can control the mop drive unit (61) according to a predetermined condition. Controlling the mop drive unit (61) may include rotating or moving the mop (60).

[0186] According to one embodiment of the present disclosure, the control unit (80) can control the driving device (210) according to a predetermined condition. Controlling the driving device (210) may include raising or lowering the side brush (110). For example, based on the liquid sensor (72) detecting liquid contaminants on the surface to be cleaned, the control unit (80) can control the driving motor (211) to move the side brush (110) away from the surface to be cleaned.

[0187] A vacuum cleaner (1) according to one embodiment of the present disclosure may include: a housing (10) including a suction port (11); a driving device (210) disposed inside the housing; a rotatable frame (230) rotatable by the driving device; a movable frame (240) rotatably coupled to the rotatable frame and movable in a vertical direction by the rotation of the rotatable frame; a side brush (110) disposed at the bottom of the housing and configured to guide foreign matter on a surface to be cleaned (C) to the suction port; and a brush holder (120) on which the side brush (110) is mounted. The brush holder (120) may be configured to lift the side brush (110) by elastically deforming while being pressed by the movable frame (240).

[0188] The brush holder (120) can be placed below the movable frame (240).

[0189] Based on the rotation of the above-mentioned rotating frame (230) in a first direction (R1), the moving frame (240) may be configured to move upward. Based on the rotation of the above-mentioned rotating frame (230) in a second direction (R2) opposite to the first direction, the moving frame (240) may be configured to move downward to press the brush holder (120).

[0190] The above vacuum cleaner (1) may further include a ball (250) that contacts the moving frame on the outside of the moving frame and generates frictional force as the rotating frame rotates in the second direction (R2).

[0191] The ball (250) may be configured to allow the movable frame to rotate in the first direction (R1). The ball (250) may be configured to restrict the movable frame from rotating in the second direction (R2).

[0192] The above vacuum cleaner (1) may further include a ball guide (223) that accommodates the ball and is configured to widen along the first direction (R1) and narrow along the second direction (R2).

[0193] The above vacuum cleaner (1) may further include a supporter (260) that supports the ball (250) and includes a support surface (261) that slopes downward.

[0194] The above vacuum cleaner (1) may further include a case (220) that accommodates the driving device. The supporter (260) may be configured to be coupled to the case. The supporter (260) may be configured to prevent the moving frame from being separated from the rotating frame while coupled to the case.

[0195] The above-mentioned movable frame may include a flange (243). The case may include a first stopper (224) capable of contacting the flange to restrict the upward movement of the movable frame. The supporter may include a second stopper (263) spaced downward from the first stopper and capable of contacting the flange to restrict the downward movement of the movable frame.

[0196] The brush holder (120) may include a holder body portion (121) provided to be pressed by the movable frame. The brush holder (120) may include an elastic portion (122) formed on the outer surface of the holder body portion and comprising an elastic material. The brush holder (120) may include a brush mounting portion (123) comprising a first end portion (1231) connected to the elastic portion and a second end portion (1232) provided to mount the side brush. As the holder body portion is pressed by the movable frame, the second end portion (1232) of the brush mounting portion may be configured to move upward by the elastic portion.

[0197] The above vacuum cleaner (1) may further include a cover (300) that can be coupled to the rotating frame (230). The cover (300) may be configured to transmit the rotational force of the rotating frame to the brush holder and the side brush while coupled to the rotating frame.

[0198] The above vacuum cleaner (1) may further include a spring (400) positioned between the brush holder (120) and the cover (300) and configured to elastically bias the brush holder upward.

[0199] The above-mentioned rotating frame (230) may include a rotating body (231); and a coupling projection (232) that protrudes from the outer surface of the rotating body and is formed to be inclined along the rotational direction of the rotating frame. The above-mentioned moving frame (240) may include a moving body (241) configured to surround the rotating body; and a coupling groove (242) that is recessed from the inner surface of the moving body and is configured to receive the coupling projection.

[0200] The above driving device (210) may include: a driving motor (211); a first gear (2121) rotatable based on the operation of the driving motor; a second gear (2122) that meshes with the first gear and is rotatable by the first gear; and a third gear (2123) that meshes with the second gear and is rotatable by the second gear and is coupled to the rotating frame.

[0201] The above vacuum cleaner (1) may include a liquid sensor (72) configured to detect liquid contaminants on the surface to be cleaned (C). The above vacuum cleaner (1) may include a control unit (80) that controls the driving device (210) to lift the side brush based on the liquid sensor detecting liquid contaminants on the surface to be cleaned.

[0202] A vacuum cleaner (1) according to one embodiment of the present disclosure may include: a side brush (110) configured to sweep a surface to be cleaned; a brush holder (120) on which the side brush is mounted; and a lift device (200) for moving the side brush. The lift device (200) may include: a drive motor (210); a rotating frame (230) rotatable as the drive motor operates; and a moving frame (240) positioned on the brush holder (120). As the rotating frame (230) rotates in a first direction (R1), the moving frame (240) may be configured to rise. As the rotating frame (230) rotates in a second direction (R2) opposite to the first direction, the moving frame (240) may be configured to lower and press against the brush holder (120).

[0203] The brush holder (120) may be configured to move the side brush (110) upward from the surface to be cleaned by elastically deforming while being pressed by the moving frame.

[0204] The above vacuum cleaner (1) may include: a gear (2123) coupled to a first end (2301) of the rotating frame to transmit rotational force generated by the drive motor to the rotating frame; and a cover (300) coupled to a second end (2302) of the rotating frame to transmit rotational force of the rotating frame to the brush holder.

[0205] The above lift device (200) may further include a ball (250) that contacts the moving frame and generates frictional force based on the rotation of the rotating frame in the second direction.

[0206] The lift device (200) may further include a ball guide (223) that accommodates the ball and is configured to widen along the first direction and narrow along the second direction.

[0207] According to various exemplary embodiments of the present disclosure, a vacuum cleaner can move a side brush away from a surface to be cleaned under preset conditions. For example, the vacuum cleaner may operate to lift the side brush when it detects liquid contaminants on the surface to be cleaned. This prevents / inhibits the side brush from being contaminated by liquid contaminants. The ease of use of the vacuum cleaner may be increased.

[0208] 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.

[0209] 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. Housing including an intake port; A brush holder disposed at the lower part of the above housing and configured to undergo elastic deformation; A side brush disposed in the brush holder and arranged to rotate to guide foreign substances on the surface to be cleaned to the suction port; A rotatable frame coupled to the side brush and arranged to rotate relative to the housing to rotate the side brush; A driving device disposed inside the housing and configured to rotate the rotatable frame; and It includes a movable frame that is coupleable to the above rotatable frame, and In the brush holder, the side brush, the rotatable frame, the driving device, and the movable frame, When the above-mentioned movable frame is coupled to the above-mentioned rotatable frame and the above-mentioned rotatable frame is rotated by the above-mentioned driving device, A vacuum cleaner in which the above-described movable frame moves in the vertical direction of the housing and elastically deforms the brush holder to lift the side brush, thereby allowing the side brush to be separated from the surface to be cleaned.

2. In Paragraph 1, The brush holder above is a vacuum cleaner positioned on the lower side of the movable frame in a vertical direction.

3. In Paragraph 1, Based on the fact that the rotatable frame rotates in a first direction, the movable frame is configured to move upward in a vertical direction, and A vacuum cleaner configured such that, based on the rotatable frame rotating in a second direction opposite to the first direction, the movable frame moves downward in a vertical direction to press the brush holder and elastically deform it.

4. In Paragraph 3, A vacuum cleaner further comprising: a ball arranged to contact the outer side of the movable frame, wherein the outer side of the movable frame is contacted by the ball and the rotatable frame rotates in the second direction, thereby generating a frictional force to restrict movement of the movable frame in the vertical direction.

5. In Paragraph 4, The above ball is configured to allow rotation of the movable frame in the first direction and to restrict rotation of the movable frame in the second direction.

6. In Paragraph 4, A vacuum cleaner further comprising: a ball guide for receiving the ball, wherein the ball guide is configured to taper from a first stage to a second stage, widening along the first direction and narrowing along the second direction.

7. In Paragraph 4, A cleaner further comprising a supporter that supports the ball and includes a support surface inclined downward.

8. In Paragraph 7, It further includes a case in which the above-mentioned driving device is accommodated, The above supporter can be coupled to the above case, and A vacuum cleaner configured such that the supporter prevents the separation of the movable frame from the rotatable frame while it is coupled to the case.

9. In Paragraph 7, The above-mentioned movable frame includes a flange, and The above case includes a first stopper capable of contacting the flange to restrict upward movement in the vertical direction of the movable frame, and The above supporter includes a second stopper, and The supporter includes the second stopper, and while the supporter is coupled to the case, the second stopper is spaced downward from the first stopper and is capable of contacting the flange to restrict downward movement in the vertical direction of the movable frame.

10. In Paragraph 1, The brush holder above is, A holder body portion arranged to be pressed by the above-mentioned movable frame; An elastic part formed on the outer surface of the holder body part and comprising an elastic material; and A brush mounting portion comprising a first end connected to the elastic portion and a second end provided to mount the side brush; A vacuum cleaner configured such that, as the holder body part is pressed by the movable frame, the elastic part is elastically deformed and the second end of the brush mounting part moves in a vertical direction.

11. In Paragraph 1, A vacuum cleaner configured as a cover that can be coupled to the above-mentioned rotatable frame, wherein the cover is coupled to the above-mentioned rotatable frame and, while the above-mentioned rotatable frame is rotating, the rotational force of the above-mentioned rotatable frame is transmitted to the side brush and then transmitted to the brush holder so that the side brush rotates.

12. In Paragraph 11, A vacuum cleaner further comprising a spring disposed between the brush holder and the cover, configured to elastically bias the brush holder upward in a vertical direction.

13. In Paragraph 1, The above rotatable frame is, Rotating body; and It includes a coupling projection that protrudes from the outer surface of the rotating body and is formed to be inclined along the rotational direction of the rotatable frame; The above-mentioned movable frame is, Moving body; and It includes a coupling groove that is recessed from the inner surface of the moving body and configured to allow the coupling projection to be inserted; A vacuum cleaner in which, when the coupling projection is inserted into the coupling groove, the movable frame is coupled to the rotatable frame and the movable body is arranged to surround the rotatable body.

14. In Paragraph 1, The above driving device is, Drive motor; A first gear rotatable based on the operation of the above-mentioned drive motor; A second gear engaged with the first gear so as to be rotatable by the rotation of the first gear; and A vacuum cleaner comprising: a third gear meshing with the second gear to be rotatable by the rotation of the second gear, and a third gear coupled to the rotatable frame to rotate the rotatable frame based on the rotation of the third gear.

15. In Paragraph 1, A liquid sensor configured to detect liquid contaminants on the surface to be cleaned and generate corresponding data; and A vacuum cleaner comprising: a control unit that controls the driving unit to lift the side brush to separate the side brush from the surface to be cleaned, based on data generated by the sensor detecting liquid contaminants on the surface to be cleaned, when the movable frame is coupled to the rotatable frame and the rotatable frame is rotated by the driving unit.

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