Cleaner

Abstract

This cleaner comprises: a suction part for suctioning foreign material from a surface to be cleaned; and a drum, which is provided in the suction part and can rotate. The drum includes: a drum body that includes a first end portion, which is along the rotational axis direction of the drum, has a first end portion outer diameter and includes a body connection part and a body separation part spaced apart from the body connection part in the rotational axis direction of the drum, and a second end portion, which is opposite to the first end portion in the rotational axis direction of the drum and has a second end portion outer diameter larger than the first end portion outer diameter; and a connection body, which can be coupled to the first end portion of the drum body and includes a connection part that can be connected to the body separation part. The connection part is connected to the body separation part while the connection body is coupled to the first end portion of the drum body.

Description

vacuum cleaner

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

[0002] A vacuum cleaner is a device that removes foreign substances from a room and cleans it. Vacuum cleaners are widely used in homes. Vacuum cleaners use the suction power of a fan motor to suck in air, then use a filter or other device to separate foreign substances from the air, thereby keeping the room clean. These vacuum cleaners come in two types: canister and upright. Recently, robotic vacuum cleaners, which move autonomously around a cleaning area without user intervention and vacuum up foreign substances like dust and hair, are becoming increasingly popular.

[0003] A vacuum cleaner may include a suction unit that is arranged to face the cleaning surface, and a drum that sweeps the cleaning surface to guide foreign substances on the cleaning surface to be efficiently sucked into the suction unit. When foreign substances such as dust or hair existing in the cleaning space are blown away by the rotation of the drum, the blown foreign substances such as dust or hair are sucked into the suction unit by the suction force of the fan motor device, and the sucked foreign substances are moved to a dust collection bin. The drum may be connected to a drum driving device and be arranged to be rotatable.

[0004] One aspect of the present disclosure relates to a vacuum cleaner comprising a drum having improved usability.

[0005] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0006] A vacuum cleaner according to the invention comprises a suction unit configured to suck foreign substances from a surface to be cleaned, and a rotatable drum provided in the suction unit. The drum comprises a first end having a first end outer diameter as a first end along a rotational axis direction of the drum and including a body connecting portion and a body separation portion spaced apart from the body connecting portion in the rotational axis direction of the drum, a drum body including a second end opposite the first end in the rotational axis direction of the drum and having a second end outer diameter larger than the first end outer diameter, and a connecting body including a connecting portion connectable to the first end of the drum body and connectable to the body separation portion. The connecting portion is connected to the body separation portion in a state where the connecting body is connected to the first end of the drum body.

[0007] A vacuum cleaner according to the invention comprises a suction unit and a drum rotatably provided on the suction unit. The drum comprises a first drum body provided such that an outer diameter of a first end along a rotational axis direction of the drum is smaller than an outer diameter of a second end opposite the first end, a second drum body provided such that an outer diameter of a third end closer to the first drum body along a rotational axis direction of the drum is smaller than an outer diameter of a fourth end opposite the third end, and a connecting body connectable to the first end of the first drum body and the third end of the second drum body, the connecting body including a connecting surface forming portion that forms an outer peripheral surface of the drum when the connecting body is connected to the first drum body and the second drum body.

[0008] FIG. 1 illustrates a vacuum cleaner according to one embodiment of the present disclosure.

[0009] FIG. 2 illustrates a state in which a dust collector is separated from the main body of a vacuum cleaner according to one embodiment of the present disclosure.

[0010] FIG. 3 illustrates a portion of a side cross-section of a vacuum cleaner according to one embodiment of the present disclosure.

[0011] FIG. 4 illustrates a suction head of a vacuum cleaner according to one embodiment of the present disclosure.

[0012] FIG. 5 is an exploded view of a suction head of a vacuum cleaner according to one embodiment of the present disclosure.

[0013] FIG. 6 illustrates a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0014] FIG. 7 is an exploded view of a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0015] FIG. 8 illustrates a cross-section of a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0016] FIG. 9 illustrates a state in which a drum of a vacuum cleaner according to one embodiment of the present disclosure is clogged with foreign matter.

[0017] FIG. 10 illustrates a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0018] FIG. 11 is an exploded view of a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0019] FIG. 12 illustrates a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0020] FIG. 13 is an exploded view of a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0021] FIG. 14 illustrates a state in which a drum is disassembled from a vacuum cleaner according to one embodiment of the present disclosure.

[0022] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to encompass various modifications, equivalents, or alternatives of the embodiments.

[0023] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0024] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0025] In this document, each of the phrases "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 that phrase, or all possible combinations thereof.

[0026] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0027] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0028] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0029] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0030] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0031] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0032] For convenience of explanation, the following description uses a stick-type vacuum cleaner, a type of vacuum cleaner, as an example. However, the configuration of the present disclosure is not limited to stick-type vacuum cleaners. For example, the configuration of the present disclosure can also be applied to canister-type vacuum cleaners or robot vacuum cleaners.

[0033] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0034] FIG. 1 illustrates a vacuum cleaner according to one embodiment of the present disclosure. FIG. 2 illustrates a state in which a dust collector is separated from the main body of the vacuum cleaner according to one embodiment of the present disclosure. FIG. 3 illustrates a portion of a side cross-section of the vacuum cleaner according to one embodiment of the present disclosure.

[0035] Referring to FIGS. 1 to 3, the vacuum cleaner (1) may include a suction head (100) that is provided to suck up dust and other contaminants from a surface to be cleaned by the suction force of air, and a main body (10) that is provided to collect contaminants sucked through the suction head (100).

[0036] A cleaner (1) according to one embodiment of the present disclosure may include a connecting pipe (30) provided to connect between a suction head (100) and a main body (10).

[0037] The suction head (100) can be in close contact with the surface to be cleaned and suck up air and foreign substances from the surface to be cleaned. The suction head (100) can be rotatably connected to the connecting pipe (30). The air and foreign substances sucked by the suction head (100) can pass through the connecting pipe (30) and flow into the interior of the main body (10).

[0038] The connecting pipe (30) may be formed as a pipe or flexible hose having a predetermined rigidity. The connecting pipe (30) can transmit the suction force generated by the suction motor (14) to the suction head (100) and guide the air and dust and other contaminants sucked in through the suction head (100) to the main body (10).

[0039] The connecting pipe (30) may further include a suction head connector (31). The suction head connector (31) may be provided to separate the suction head (100) from the main body (10) or to couple the suction head (100) to the main body (10).

[0040] A vacuum cleaner (1) according to one embodiment of the present disclosure may include a fan (14) that is rotatable to generate suction force on a surface to be cleaned, and a suction motor (13) that is provided to provide rotational force to the fan (14). For example, the fan (14) and the suction motor (13) may be provided in the main body (10).

[0041] The suction motor (13) can perform a function of converting electromagnetic force into mechanical rotational force. In order to perform the above function, the suction motor (13) may include a stator (13b) in which a coil is provided, a rotor (13a) having magnetism and capable of rotation by electromagnetic force, and a rotor shaft (13c) that is provided to be rotatable while penetrating the rotor (13a). A fan (14) connected to the suction motor (13) through the rotor shaft (13c) of the suction motor (13) may be provided inside the main body (10). For example, a fan motor device may include a suction motor (13) and a fan (14).

[0042] In Fig. 3, the suction motor (13) is illustrated as being of the inner-rotor type in which the rotor (13a) is located on the inside of the stator (13b), but is not limited thereto, and the suction motor may be provided as an outer-rotor type in which the rotor is located on the outside of the stator.

[0043] The main body (10) may include an intake port (11a) through which air and foreign substances are sucked into the interior of the main body (10) and an exhaust port (12a) through which they are discharged to the exterior of the main body (10). The main body (10) may include an intake duct (11) that is connected to one end of an extension pipe (30), and an intake port (11a) may be formed at one end of the intake duct (11) that is connected to one end of the extension pipe (30). Accordingly, air and foreign substances may be introduced into the interior of the main body (10) through the intake port (11a) of the intake duct (11). However, the present invention is not limited thereto, and the main body (10) may not include a duct structure such as an intake duct (11), and the intake port (11a) and the extension pipe (30) may be directly connected.

[0044] The main body (10) may include an exhaust case (12), and an exhaust port (12a) may be formed on the outer surface of the exhaust case (12).

[0045] The main body (10) may include a control unit (17). The user can turn the vacuum cleaner (1) on / off or control the suction strength by operating the power button, etc. provided on the control unit (17).

[0046] A vacuum cleaner (1) according to one embodiment of the present disclosure may include a handle (40) that is provided to be grippable by a user.

[0047] A vacuum cleaner (1) according to one embodiment of the present disclosure may include a battery (50) that is provided to supply power necessary for driving components of the vacuum cleaner (1), such as a suction motor (13). The battery (50) may be detachably mounted on the main body (10). For example, the battery (50) may be electrically connected to a charging terminal provided on a vacuum cleaner holder or docking station. The battery (50) may be charged by receiving power from the charging terminal provided on the vacuum cleaner holder or docking station. When the battery (50) is discharged, the operating time of the vacuum cleaner may be increased by replacing it with a pre-charged battery (50). Alternatively, the battery (50) may be provided integrally with the main body (10).

[0048] A vacuum cleaner (1) according to one embodiment of the present disclosure may include a dust collector (20) configured to separate and collect foreign substances from sucked air. For example, the dust collector (20) may be provided in the main body (10). The dust collector (20) may be arranged upstream of the suction motor (13) in the air flow direction, and configured to separate foreign substances from air flowing into the dust collector (20) and collect the separated foreign substances.

[0049] Air introduced into the interior of the main body (10) through the intake port (11a) can be introduced into the interior of the dust collector (20) through the inlet port (22). The dust collector (20) can be provided to be detachably coupled to the main body (10).

[0050] A cleaner (1) according to one embodiment of the present disclosure may include a body coupling portion (16) for detachably coupling a dust collector (20) to a main body (10). For example, the body coupling portion (16) may be located on an upper portion of the dust collector (20). For example, the body coupling portion (16) may include a button that is engaged with one side of the main body (10). When the body coupling portion (16) is engaged with one side of the main body (10), the dust collector (20) may be mounted on the main body (10). When a user presses the body coupling portion (16) while the dust collector (20) is mounted on the main body (10), the body coupling portion (16) may be provided so that the engaging joint is released, and thus, the dust collector (20) may be detached from the main body (10). However, the method is not limited to this method, and the dust collector (20) can be detachably connected to the main body (10) in various ways, such as a hook method.

[0051] The dust collector (20) may include a dust collector case (26) provided to collect foreign substances separated from the air. The dust collector case (26) may form the exterior of the dust collector (20). The dust collector case (26) may form a dust collector chamber (21) on the inside where foreign substances separated from the air are collected.

[0052] Foreign substances in the air that have entered the interior of the main body (10) through the intake port (11a) can be separated from the air and collected in the dust collecting chamber (21) formed on the inside of the dust collecting case (26). The air from which foreign substances have been separated by the dust separator (29) can be discharged to the outside of the dust collecting device (20) through the exhaust port (23).

[0053] The dust collector (20) may include a dust collector cover (27) configured to open and close the dust collector chamber (21). For example, the dust collector cover (27) may be rotatably coupled to one side of the dust collector case (26). The dust collector cover (27) may be rotatably provided on the dust collector case (26) by a cover rotation shaft (27a).

[0054] A cleaner (1) according to one embodiment of the present disclosure may include a cover fixing member (28) that is provided to fix the dust collection cover (27) to or release the dust collection cover (27) from the dust collection case (26). For example, when the cover fixing member (28) is pressurized, the dust collection cover (27) can rotate downward and open the dust collection chamber (21). With this configuration, a user can easily remove foreign substances collected inside the dust collection chamber (21) without separating the dust collection device (20) from the main body (10).

[0055] A vacuum cleaner (1) according to one embodiment of the present disclosure may include a dust separator (29) for separating foreign substances from the sucked air. The dust separator (29) may be provided to separate foreign substances from the air introduced into the main body (10).

[0056] For example, as illustrated in FIG. 3, a dust separator (29) may include a cyclone structure designed to separate foreign substances from sucked air. The cyclone structure of the dust separator (29) separates foreign substances by centrifugal force generated as the sucked air and foreign substances rotate, and the inlet through which air flows may be formed to have a structure capable of guiding the rotational flow of air, such as a helical inlet, a tangential inlet, or a guide vane inlet.

[0057] However, the dust separator (29) provided in the vacuum cleaner (1) according to one embodiment of the present disclosure is not limited to a cyclone-type dust separator (29), and various types of dust separators may be provided.

[0058] To allow air to flow from the inlet (22) to the outlet (23), the suction motor (13) may be located downstream of the dust collector (20) in the air path through which air flows from the inlet (22).

[0059] The air discharged to the outside of the dust collector (20) through the exhaust port (23) can sequentially pass through the suction motor (13) and the exhaust port (12a) and be discharged to the outside of the main body (10). The main body (10) can include an exhaust filter (15) between the dust collector (20) and the exhaust port (12a) so as to filter dust in the air before the air inside the main body (10) is discharged to the outside of the main body (10) through the exhaust port (12a). For example, the exhaust filter (15) can filter ultrafine dust, etc., that is not filtered by the dust separator (29) of the dust collector (20). For example, the exhaust filter (15) can include a HEPA filter.

[0060] With this configuration, when suction force is generated by the suction motor (13) and fan (14) inside the main body (10), air and foreign substances such as dust in the air can be sucked into the suction head (100). The air and foreign substances sucked into the suction head (100) are sucked into the inside of the main body (10) through the extension pipe (30) and the intake port (11a). The air introduced into the inside of the main body (10) is introduced into the dust collector (20) through the inlet port (22), and dust in the air can be separated from the air by the dust separator (29). The foreign substances separated from the air are accommodated in the dust collecting chamber (21) formed inside the dust collecting case (26), and the air that has passed through the dust separator (29) is discharged to the outside of the dust collector (20) through the outlet port (23). The air discharged to the outside of the dust collector (20) passes through the exhaust filter (15) and is filtered once more, and can be exhausted to the outside of the main body (10) through the exhaust port (12a).

[0061] FIG. 4 illustrates a suction head of a vacuum cleaner according to one embodiment of the present disclosure. FIG. 5 illustrates an exploded view of a suction head of a vacuum cleaner according to one embodiment of the present disclosure.

[0062] Referring to FIGS. 4 and 5, a cleaner (1) according to one embodiment of the present disclosure may include a drum (110) that is rotatably provided on a suction head (100). The drum (110) may be provided to be in contact with a cleaning surface and to suck up foreign substances such as dust present on the cleaning surface into the inside of the suction head (100).

[0063] For example, as the drum (110) rotates, foreign substances on the cleaning surface can be sucked into the inside of the suction head (100) through the suction portion (101a) of the suction head (100). The foreign substances sucked into the inside of the suction head (100) can be sucked into the connection pipe (30) by the suction motor (13) of the main body (10) through the communication port (101b) that connects the connection pipe (30) and the suction head (100) and can move toward the main body (10).

[0064] The suction head (100) may include a housing (102) in which a suction portion (101a) is formed, and a suction connector (70) connecting the housing (102) and a connecting pipe (30). A drum (110) that is rotatably provided in the suction head (100) may be arranged inside the suction head (100) so that foreign substances are effectively sucked into the interior of the housing (102) through the suction portion (101a).

[0065] For example, the housing (102) of the suction head (100) may include an upper housing (121), a lower housing (122), a side housing (123), and a drum mounting portion (124).

[0066] For example, the side housing (123) may be coupled to the left side of the lower housing (122), and the drum mounting portion (124) may be coupled to the right side of the drum (110) and arranged on the right side of the lower housing (122). However, the arrangement of the side housing (123) and the drum mounting portion (124) is not limited thereto, and the side housing (123) may be coupled to the right side of the lower housing (122) and the drum mounting portion (124) may be arranged on the left side of the lower housing (122).

[0067] The drum mounting portion (124) can rotatably support the drum (110). The drum mounting portion (124) can include a housing coupling portion (124a) and a housing switch (124b) to couple the drum (110) to the housing (102). Since the drum mounting portion (124) includes the housing coupling portion (124a) and the housing switch (124b), the drum (110) can be detachably coupled to one side of the housing (102). The drum mounting portion (124) can be detachably coupled to the upper housing (121) and the lower housing (122) together with the drum (110) by the housing coupling portion (124a) and the housing switch (124b).

[0068] The housing coupling portion (124a) may protrude from the drum mounting portion (124) toward the upper housing (121) and the lower housing (122). For example, the housing coupling portion (124a) may include a portion having a hook shape, and the housing switch (124b) may be provided to pressurize the portion of the housing coupling portion (124a) having a hook shape. An insertion groove (121a, groove) having a shape corresponding to the housing coupling portion (124a) may be formed in the upper housing (121) so that the housing coupling portion (124a) can be inserted therein. For example, a fastening groove (121b, groove) may be formed in the insertion groove (121a) of the upper housing (121) so that the portion of the housing coupling portion (124a) having a hook shape is fixed thereto.

[0069] According to this configuration, the drum mounting portion (124) can be easily detachable from the upper housing (121) and the lower housing (122), and the drum (110) can be easily detachably mounted on the housing (102) of the suction head (100). However, the configuration of the drum mounting portion (124) described above is an example for the drum (110) to be detachably coupled to the housing (102), and the configuration of the drum mounting portion (124) is not limited to the above description. For example, the drum (110) may be provided so that it can be detached from the housing (102) or mounted on the housing (102) while the drum mounting portion (124) is coupled to the upper housing (121) and the lower housing (122).

[0070] A suction head (100) according to one embodiment of the present disclosure may include a drum drive device (130). The drum drive device (130) may be located inside a housing (102). The drum drive device (130) may include a drum motor (131) that generates power. The drum drive device (130) may include a motor bearing (133) located on one side of the drum (110) and coupled to a rotational shaft. The drum drive device (130) may include a drum pulley (132) that is coupled to the motor bearing (133) on one side and the rotational shaft of the drum motor (131) on the other side to transmit power of the drum motor (131) to the drum (110).

[0071] Accordingly, when the drum motor (131) generates power and the rotation axis of the drum motor (131) rotates, the drum pulley (132) operates, and the motor bearing (133) rotates due to the operation of the drum pulley (132). The motor bearing (133) can be coupled to one end of the drum (110). As the motor bearing (133) rotates, the drum (110) can rotate.

[0072] Below, the configuration and function of the drum (110) are described in detail.

[0073] FIG. 6 illustrates a drum of a vacuum cleaner according to one embodiment of the present disclosure. FIG. 7 illustrates an exploded view of a drum of a vacuum cleaner according to one embodiment of the present disclosure. FIG. 8 illustrates a state in which a foreign substance is wrapped around the drum of a vacuum cleaner according to one embodiment of the present disclosure. FIG. 9 illustrates a cross-section of a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0074] Referring to FIGS. 6 to 9, the drum (110) of the cleaner (1) according to one embodiment of the present disclosure may have a shape including a portion that increases in size from approximately the center toward both ends in the direction of the rotational axis of the drum (110). For example, the drum (110) may have a shape including a portion whose outer diameter increases from the center toward the outside in the direction of the rotational axis of the drum (110). For example, the drum (110) may include a portion whose diameter decreases from both ends toward the center.

[0075] A drum (110) of a cleaner (1) according to one embodiment of the present disclosure may include at least one drum body. For example, the drum (110) may include a first drum body (111). The first drum body (111) may form a portion of the drum (110). For example, the first drum body (111) may form a portion of the left side of the drum (110).

[0076] The first drum body (111) may be provided so that one end and the other end have different sizes in the direction of the rotation axis of the drum (110). For example, the first drum body (111) may be provided so that the diameter of the first end is smaller than the diameter of the second end in the direction of the rotation axis of the drum (110). The first drum body (111) may include a portion whose diameter increases from the first end to the second end in the direction of the rotation axis of the drum (110).

[0077] A drum (110) according to one embodiment of the present disclosure may include a second drum body (112). The second drum body (112) may form a portion of the drum (110). For example, the second drum body (112) may form a right portion of the drum (110).

[0078] The second drum body (112) may be provided so that one end and the other end have different sizes in the direction of the rotation axis of the drum (110). For example, the second drum body (112) may be provided so that the diameter of the third end in the direction of the rotation axis of the drum (110) is smaller than the diameter of the fourth end. The second drum body (112) may include a portion whose diameter increases from the third end to the fourth end in the direction of the rotation axis of the drum (110).

[0079] As the first end with the smallest diameter of the first drum body (111) and the third end with the smallest diameter of the second drum body (112) are arranged to be connected, the drum (110) according to one embodiment of the present disclosure may have a shape in which the diameter becomes smaller as it goes toward the center.

[0080] A drum (110) according to one embodiment of the present disclosure may include a connecting body (113) provided between a first drum body (111) and a second drum body (112). The first drum body (111) may be detachably mounted on one side of the connecting body (113). The second drum body (112) may be detachably mounted on the other side of the connecting body (113).

[0081] The connecting body (113) may include a connecting receiving portion (1131) that is received inside the first drum body (111) and the second drum body (112) when combined with the first drum body (111) and the second drum body (112). The connecting receiving portion (1131) may include a first connecting receiving portion (1131a) that can be inserted into the first drum body (111) and a second connecting receiving portion (1131b) that can be inserted into the second drum body (112).

[0082] The first drum body (111) may include a first body support portion (1117) into which a first connection receiving portion (1131a) is inserted. The first body support portion (1117) may support the connection body (113) in a direction that prevents relative rotation of the connection body (113) with respect to the first drum body (111) when the connection body (113) is coupled to the first drum body (111). The first connection receiving portion (1131a) may be inserted into the first body support portion (1117) in a sliding manner.

[0083] The second drum body (112) may include a second body support portion (1127) into which a second connection receiving portion (1131b) is inserted. The second body support portion (1127) may support the connection body (113) in a direction that prevents relative rotation of the connection body (113) with respect to the second drum body (112) when the connection body (113) is coupled to the second drum body (112). The second connection receiving portion (1131b) may be inserted into the second body support portion (1127) in a sliding manner.

[0084] Referring to FIGS. 7 and 9, in a drum (110) according to one embodiment of the present disclosure, when an external force is applied to the drum (110) in a direction different from the rotational axis direction of the drum (110), the force transmitted to the portion where the first drum body (111) and the second drum body (112) are connected is distributed to the connecting portion of the first connection receiving portion (1131a) and the first body support portion (1117) and the connecting portion of the second connection receiving portion (1131b) and the second body support portion (1127), thereby reducing the possibility of breakage.

[0085] For example, the drum (110) may include a body fastening member (119) for connecting a first drum body (111) and a second drum body (112). The first drum body (111) may include a first body fastening portion (1119) to which the body fastening member (119) is fastened. The second drum body (112) may include a second body fastening portion (1129) to which the body fastening member (119) is fastened. For example, the drum (110) may be assembled in a manner in which the body fastening member (119) is fastened to the first body fastening portion (1119) and the second body fastening portion (1129) while the first drum body (111) and the second drum body (112) are connected to both ends of the connecting body (113). The method of fastening the first drum body (111) and the second drum body (112) is not limited thereto, and may be provided in a hook method or a snap fit method.

[0086] The connecting body (113) may include a connecting surface forming portion (1132) that forms a portion of the outer surface of the drum (110) together with the first drum body (111) and the second drum body (112) when combined with the first drum body (111) and the second drum body (112). The connecting surface forming portion (1132) may be located at approximately the central portion of the drum (110). The connecting surface forming portion (1132) may be located at a portion of the drum (110) with the smallest outer diameter. The connecting surface forming portion (1132) may be provided so that the boundary lines connecting the first drum body (111) and the second drum body (112) have a plurality of sections spaced apart from each other. Since the boundary line connecting the first drum body (111) and the second drum body (112) by the connecting surface forming portion (1132) is provided to have a plurality of sections spaced apart from each other, the drum (110) according to one embodiment of the present disclosure can reduce foreign substances such as hair from getting caught in the boundary line connecting the first drum body (111) and the second drum body (112).

[0087] The first drum body (111) may include a first body connecting portion (1111) that is connected to the second drum body (112) when the first drum body (111) is coupled with the second drum body (112) and the connecting body (113). The first body connecting portion (1111) may be provided at one end of the first drum body (111) facing the second drum body (112).

[0088] The second drum body (112) may include a second body connecting portion (1121) that is connected to the first drum body (111) when the second drum body (112) is coupled with the first drum body (111) and the connecting body (113). The second body connecting portion (1121) may be provided at one end of the second drum body (112) facing the first drum body (111). The second body connecting portion (1121) may be provided so as to be in contact with the first body connecting portion (1111).

[0089] The first drum body (111) may include a first body separation portion (1113) that is connected to the connection body (113) when the first drum body (111) is coupled with the connection body (113). The first body separation portion (1113) may be provided to be spaced apart from the first body connection portion (1111) in the direction of the rotational axis of the drum (110). For example, the first drum body (111) may include a portion having a groove shape to form the first body separation portion (1113).

[0090] The connecting body (113) may include a first connecting portion (1133) that is connected to the first drum body (111) when the connecting body (113) is coupled with the first drum body (111). The first connecting portion (1133) may be provided at one end of the connecting surface forming portion (1132). The first connecting portion (1133) may be provided so as to be connectable to the first body separation portion (1113) of the first drum body (111). The first connecting portion (1133) may be provided so as to be in contact with the first body separation portion (1113) of the first drum body (111). For example, the connecting body (113) may include a protruding portion to form the first connecting portion (1133). The protruding portion where the first connecting portion (1133) of the connecting body (113) is formed can be inserted into a portion having a groove shape of the first drum body (111).

[0091] The second drum body (112) may include a second body separation portion (1124) connected to the connection body (113) when the second drum body (112) is coupled with the connection body (113). The second body separation portion (1124) may be provided to be spaced apart from the second body connection portion (1121) in the direction of the rotational axis of the drum (110). For example, the second drum body (112) may include a portion having a groove shape to form the second body separation portion (1124).

[0092] The connecting body (113) may include a second connecting portion (1134) that is connected to the second drum body (112) when the connecting body (113) is coupled with the second drum body (112). The second connecting portion (1134) may be provided at an end different from one end of the connecting surface forming portion (1132). The second connecting portion (1134) may be provided so as to be connectable to the second body separation portion (1124) of the second drum body (112). The second connecting portion (1134) may be provided so as to be in contact with the second body separation portion (1124) of the second drum body (112). For example, the connecting body (113) may include a portion that protrudes to form the second connecting portion (1134). The protruding portion where the second connecting portion (1134) of the connecting body (113) is formed can be inserted into a portion having a groove shape of the second drum body (112).

[0093] Referring to FIG. 8, in a drum (110) according to one embodiment of the present disclosure, a portion where a first drum body (111) and a connection body (113) are connected may be arranged so that the portion where the first drum body (111) and the second drum body (112) are connected is spaced apart from the portion where the first drum body (111) and the second drum body (112) are connected in the direction of the rotational axis of the drum (110). According to this configuration, even if foreign substances such as hair are wrapped around the drum (110) according to one embodiment of the present disclosure, the drum (110) can reduce the occurrence of foreign substances such as hair getting caught in the boundary portion where the first drum body (111) and the second drum body (112) are connected.

[0094] A drum (110) according to one embodiment of the present disclosure may include a drum brush (116). The drum brush (116) may be provided in a spiral shape on the outer circumferential surface of the drum (110). For example, the drum brush (116) may include a plurality of brush parts.

[0095] The drum brush (116) according to one embodiment of the present disclosure is not limited to the meaning of a broom, brush, etc. that sweeps away dust or trash, and may have the meaning of a brush that includes the meaning of sweeping, shaking, etc. Therefore, the drum brush (116) according to one embodiment of the present disclosure is not limited to the bristle shape in which a plurality of hairs are gathered, and may include various shapes as long as it can sweep or shake off foreign substances, etc., from the cleaning surface. For example, the drum brush (116) may include bristles that are stronger than those of a general brush in order to easily clean the hair of a pet. For example, the drum brush (116) may include a fleece or elastic blade, etc. The drum brush (116) may include a material that is more flexible than the first drum body (111) and / or the second drum body (112).

[0096] In addition, referring to FIGS. 6 to 9, the brush hairs constituting the drum brush (116) are illustrated as being formed integrally, but this is illustrated for convenience in explaining the drum brush (116) as a unit in which a plurality of brush hairs are assembled, and the shape of the drum brush (116) according to one embodiment of the present disclosure is not limited thereto.

[0097] The first drum body (111) may include a first brush mounting portion (1116) for detachably mounting at least a portion of the drum brush (116). The first brush mounting portion (1116) may protrude from an outer surface of the first drum body (111) to support at least a portion of the drum brush (116). The first brush mounting portion (1116) may be provided in a spiral shape on the outer surface of the first drum body (111) to correspond to the drum brush (116). For example, the drum brush (116) may be provided to be slidably mounted on the first brush mounting portion (1116). The first brush mounting portion (1116) may include a guide rail (1116a) for slidably mounting the drum brush (116).

[0098] The second drum body (112) may include a second brush mounting portion (1126) for detachably mounting at least a portion of the drum brush (116). The second brush mounting portion (1126) may protrude from an outer surface of the second drum body (112) to support at least a portion of the drum brush (116). The second brush mounting portion (1126) may be provided in a spiral shape on the outer surface of the second drum body (112) to correspond to the drum brush (116). For example, the drum brush (116) may be provided to be slidably mounted on the second brush mounting portion (1126). The second brush mounting portion (1126) may include a guide rail (1126a) for slidably mounting the drum brush (116).

[0099] When the first drum body (111) and the second drum body (112) are connected by the connecting body (113), the first brush mounting portion (1116) and the second brush mounting portion (1126) can be connected. When the first drum body (111) and the second drum body (112) are connected by the connecting body (113), the spiral shape of the first brush mounting portion (1116) and the spiral shape of the second brush mounting portion (1126) can be connected.

[0100] Since the drum (110) according to one embodiment of the present disclosure includes a first brush mounting portion (1116) and a second brush mounting portion (1126) having a spiral shape, it must be manufactured using a three-dimensional helical rotation mold method rather than an injection molding method from a core composed of upper, lower, left, and right parts. Since the drum (110) according to one embodiment of the present disclosure has a shape in which the diameter increases from the center toward the outside along the rotation axis direction of the drum (110), it is not easy to manufacture when the first drum body (111) and the second drum body (112) are formed integrally, but since the first drum body (111) and the second drum body (112) are provided as separate configurations, each configuration can be easily manufactured.

[0101] The connecting body (113) may include a blocking portion (1136) to reduce foreign substances such as hair from getting caught in the boundary line where the first brush mounting portion (1116) and the second brush mounting portion (1126) are connected when the connecting body (113) is connected with the first drum body (111) and the second drum body (112). The blocking portion (1136) may form a portion of the outer surface of the drum (110) when the connecting body (113) is connected with the first drum body (111) and the second drum body (112).

[0102] The blocking portion (1136) of the connecting body (113) may be provided to contact a portion where the first brush mounting portion (1116) and the second brush mounting portion (1126) are connected. The spiral shape formed by the first brush mounting portion (1116) and the second brush mounting portion (1126) changes in an extending direction at a portion where the first brush mounting portion (1116) and the second brush mounting portion (1126) are connected, and the blocking portion (1136) may be provided to contact a portion where the extending direction of the spiral shape formed by the first brush mounting portion (1116) and the second brush mounting portion (1126) is changed. The blocking portion (1136) may be provided to cover at least a portion of a boundary line where the first brush mounting portion (1116) and the second brush mounting portion (1126) are connected.

[0103] A drum (110) according to one embodiment of the present disclosure may include a bearing cap (114) and a drive cap (115) arranged at both ends of the drum (110). For example, the bearing cap (114) may be arranged at one end of the drum (110) on the side housing (123) side, and the drive cap (115) may be arranged at the other end of the drum (110) on the drum mounting portion (124) side.

[0104] A bearing cap (114) may cover one end of the drum (110). The bearing cap (114) may be detachably coupled to the first drum body (111). The bearing cap (114) may be provided to be fixed to one end of the first drum body (111) facing one side of the side housing (123). For example, the bearing cap (114) may be provided to be fixed to one end of the first drum body (111) facing the side housing (123). At least a portion of the bearing cap (114) may be inserted into the first drum body (111) and supported on the inner circumferential surface of the first drum body (111).

[0105] The bearing cap (114) may be connected to the drum drive device (130). For example, the bearing cap (114) may be coupled to the motor bearing (133) of the drum drive device (130). The bearing cap (114) may be arranged to rotate together with the motor bearing (133). Power generated from the drum motor (131) may be transmitted to the bearing cap (114) through the drum pulley (132) and the motor bearing (133).

[0106] The bearing cap (114) may include a first cap fixing portion (114a), and the first drum body (111) may include a first body fixing portion (111a) corresponding to the first cap fixing portion (114a). When the first cap fixing portion (114a) and the first body fixing portion (111a) are aligned, the bearing cap (114) may be fixed to the first drum body (111) as the fastening member is fastened to the first cap fixing portion (114a) and the first body fixing portion (111a).

[0107] The drive cap (115) may be provided to cover one end of the drum (110) opposite to the other end where the bearing cap (114) is arranged. The drive cap (115) may be arranged to be supported on the inner circumferential surface of the second drum body (112). The drive cap (115) may be provided to be fixed to one end of the second drum body (112) so that the drum (110) may be rotatably coupled to the drum mounting portion (124). The drum mounting portion (124) may rotatably support the drive cap (115). The drive cap (115) may be inserted into the second drum body (112) and supported on the inner circumferential surface of the second drum body (112).

[0108] The drive cap (115) may include a second cap fixing portion (115a), and the second drum body (112) may include a second body fixing portion corresponding to the second cap fixing portion (115a). The second cap fixing portion (115a) and the second body fixing portion may be provided to be coupled by a fastening member in the same manner as the coupling of the first cap fixing portion (114a) and the first body fixing portion (111a). As the fastening member is fastened to the second cap fixing portion (115a) and the second body fixing portion, the drive cap (115) may be fixed to the second drum body (112).

[0109] FIG. 10 illustrates a drum of a vacuum cleaner according to one embodiment of the present disclosure. FIG. 11 illustrates an exploded view of a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0110] Referring to FIGS. 10 and 11, a drum (210) according to one embodiment of the present disclosure will be described. In describing the drum (210) illustrated in FIGS. 10 and 11, the same reference numerals may be assigned to components having the same configuration as the drum (110) illustrated in FIGS. 6 to 9, and a detailed description thereof may be omitted.

[0111] Referring to FIGS. 10 and 11 , a drum (210) according to one embodiment of the present disclosure may include a drum body (111) having the same configuration as the first drum body (111) illustrated in FIGS. 6 to 9 . A drum (210) according to one embodiment of the present disclosure may include a bearing cap (114) having the same configuration as the bearing cap (114) illustrated in FIGS. 6 to 9 . A drum (210) according to one embodiment of the present disclosure may include a drum brush (116) having the same configuration as the drum brush (116) illustrated in FIGS. 6 to 9 .

[0112] A drum (210) according to one embodiment of the present disclosure may include a connecting body (213) having a different configuration from the connecting body (113) illustrated in FIGS. 6 to 9. Since the drum (210) according to one embodiment of the present disclosure includes a drum body (111) and a connecting body (213), it may have a shorter length than the drum (110) illustrated in FIGS. 6 to 9.

[0113] According to one embodiment of the present disclosure, the connecting body (213) of the drum (210) may include a first connecting portion (2133) that is connectable to a body separation portion (1113) of the drum body (111) when the connecting body (213) is connected to the drum body (111). When the connecting body (213) is connected to the drum body (111), the first connecting portion (2133) may come into contact with the body separation portion (1113).

[0114] According to one embodiment of the present disclosure, the connecting body (213) of the drum (210) may include a second connecting portion (2134) that is connectable to the body connecting portion (1111) of the drum body (111) when the connecting body (213) is connected to the drum body (111). When the connecting body (213) is connected to the drum body (111), the second connecting portion (2134) may come into contact with the body connecting portion (1111). The second connecting portion (2134) may be provided to be spaced apart from the first connecting portion (2133) in the direction of the rotational axis of the drum (210).

[0115] For example, the connecting body (213) may include a protruding portion to form a first connecting portion (2133). For example, the connecting body (213) may include a portion having a groove shape to form a second connecting portion (2134).

[0116] Unlike the drum (110) disclosed in FIGS. 6 to 9 which is configured to include a separate drive cap (115) rotatably supported on the suction head (100), the drum (210) according to one embodiment of the present disclosure may be configured such that the connecting body (213) is rotatably supported on the suction head (100).

[0117] According to this configuration, the drum (210) according to one embodiment of the present disclosure may have a shorter length than the drum (110) illustrated in FIGS. 6 to 9, and thus may be mounted on a suction head having a smaller size than the suction head (100) of the cleaner (1) illustrated in FIG. 1.

[0118] FIG. 12 illustrates a drum of a vacuum cleaner according to one embodiment of the present disclosure. FIG. 13 illustrates an exploded view of a drum of a vacuum cleaner according to one embodiment of the present disclosure.

[0119] Referring to FIGS. 12 and 13, a drum (310) according to one embodiment of the present disclosure will be described. In describing the drum (310) illustrated in FIGS. 12 and 13, the same reference numerals may be assigned to components having the same configuration as the drums (110, 210) illustrated in FIGS. 6 to 11, and a detailed description thereof may be omitted.

[0120] Referring to FIGS. 12 and 13, a drum (310) according to one embodiment of the present disclosure will be described. In describing the drum (310) illustrated in FIGS. 12 and 13, the same reference numerals may be assigned to components having the same configuration as the drum (110) illustrated in FIGS. 6 to 9, and a detailed description thereof may be omitted.

[0121] Referring to FIGS. 12 and 13 , a drum (310) according to an embodiment of the present disclosure may include a first drum body (111) having the same configuration as the first drum body (111) illustrated in FIGS. 6 to 9 . A drum (310) according to an embodiment of the present disclosure may include a second drum body (112) having the same configuration as the second drum body (112) illustrated in FIGS. 6 to 9 . A drum (210) according to an embodiment of the present disclosure may include a bearing cap (114) having the same configuration as the bearing cap (114) illustrated in FIGS. 6 to 9 . A drum (310) according to an embodiment of the present disclosure may include a drive cap (115) having the same configuration as the drive cap (115) illustrated in FIGS. 6 to 9 . A drum (210) according to one embodiment of the present disclosure may include a drum brush (116) having the same configuration as the drum brush (116) illustrated in FIGS. 6 to 9.

[0122] A drum (310) according to one embodiment of the present disclosure may include a connecting body (313) having a different configuration from the connecting body (113) illustrated in FIGS. 6 to 9. Since the drum (310) according to one embodiment of the present disclosure includes a connecting body (313) having a longer length than the connecting body (113) illustrated in FIGS. 6 to 9, it may have a longer length than the drum (110) illustrated in FIGS. 6 to 9. For example, the connecting body (313) may have an outer diameter that becomes the same as it goes along the rotational axis direction of the drum (310). For example, the connecting body (313) may include a portion whose diameter does not change as it goes along the rotational axis direction of the drum (310).

[0123] According to one embodiment of the present disclosure, the connecting body (313) of the drum (310) may include a first connecting portion (3133) that, when coupled to the first drum body (111), is connectable to the first body separation portion (1113) of the first drum body (111). When the connecting body (313) is coupled to the first drum body (111), the first connecting portion (3133) may come into contact with the first body separation portion (1113).

[0124] According to one embodiment of the present disclosure, the connecting body (313) of the drum (310) may include a second connecting portion (3134) that is connectable to the first body connecting portion (1111) of the first drum body (111) when the connecting body (313) is connected to the first drum body (111). When the connecting body (313) is connected to the first drum body (111), the second connecting portion (3134) may come into contact with the first body connecting portion (1111). The second connecting portion (3134) may be provided to be spaced apart from the first connecting portion (3133) in the direction of the rotational axis of the drum (310).

[0125] For example, the connecting body (313) may include a protruding portion to form a first connecting portion (3133). For example, the connecting body (313) may include a portion having a groove shape to form a second connecting portion (3134).

[0126] According to one embodiment of the present disclosure, the connecting body (313) of the drum (310) may include a third connecting portion (3137) that is connectable to the second body separation portion (1124) of the second drum body (112) when the connecting body (313) is connected to the second drum body (112). When the connecting body (313) is connected to the second drum body (112), the third connecting portion (3137) may come into contact with the second body separation portion (1124).

[0127] According to one embodiment of the present disclosure, the connecting body (313) of the drum (310) may include a fourth connecting portion (3138) that is connectable to the second body connecting portion (1121) of the second drum body (112) when the connecting body (313) is connected to the second drum body (112). When the connecting body (313) is connected to the second drum body (112), the fourth connecting portion (3138) may be in contact with the second body connecting portion (1121). The fourth connecting portion (3138) may be provided to be spaced apart from the third connecting portion (3137) in the direction of the rotational axis of the drum (310).

[0128] For example, the connecting body (313) may include a protruding portion to form a third connecting portion (3137). For example, the connecting body (313) may include a portion having a groove shape to form a fourth connecting portion (3138).

[0129] According to one embodiment of the present disclosure, the connecting body (313) of the drum (310) may include a connecting brush mounting portion (3136) to which at least a portion of the drum brush (116) is detachably mounted. The connecting brush mounting portion (3136) may protrude from the outer surface of the connecting body (313) to support at least a portion of the drum brush (116). The connecting brush mounting portion (3136) may be provided in a spiral shape on the outer surface of the connecting body (313) to correspond to the drum brush (116). For example, the connecting brush mounting portion (3136) may include a portion extending in a spiral direction in which the first brush mounting portion (1116) extends, and a portion extending in a spiral direction in which the second brush mounting portion (1126) extends. The connecting brush mounting portion (3136) may include a portion in which the spiral direction is changed.

[0130] For example, the drum brush (116) may be arranged to be slidably mounted on a connecting brush mounting portion (3136). The connecting brush mounting portion (3136) may include a guide rail (3136a) for sliding mounting of the drum brush (116).

[0131] According to this configuration, the drum (310) according to one embodiment of the present disclosure may have a longer length than the drum (110) illustrated in FIGS. 6 to 9, and thus may be mounted on a suction head having a larger size than the suction head (100) of the cleaner (1) illustrated in FIG. 1.

[0132] According to various embodiments of the present disclosure, drums (110, 210, 310) can be provided to have various lengths by combining a plurality of parts (e.g., a first drum body (111), a second drum body (112), a connecting body (113, 213, 313), etc.).

[0133] In addition, the drum (110, 210, 310) according to various embodiments of the present disclosure includes a structure such as a connecting surface forming portion (1132) to prevent foreign substances such as hair from getting caught in the boundary portion where multiple parts are connected, so that convenience of use can be improved.

[0134] FIG. 14 illustrates a state in which a drum is disassembled from a vacuum cleaner according to one embodiment of the present disclosure.

[0135] In the above, a vacuum cleaner (1) equipped with a suction head (100), such as a stick vacuum cleaner, has been described, but the drum (110, 210, 310) of the present disclosure can also be mounted on a robot vacuum cleaner (2) that does not have a separate suction head.

[0136] Referring to FIG. 14, the robot cleaner (2) may include a main body (200) that can move on a cleaning surface and a housing (201) that forms the exterior of the main body (200).

[0137] The housing (201) may include a suction unit (201a) to suck up foreign substances such as dust from the cleaning surface. The suction unit (201a) may be provided on the bottom surface of the main body (200). A drum (110) may be provided on the suction unit (201a). The drum (110) may be rotatably mounted on the suction unit (201a).

[0138] In FIG. 14, the robot cleaner (2) according to one embodiment of the present disclosure is illustrated as including the same drum (110) as the drum (110) illustrated in FIGS. 1 to 9, but is not limited thereto, and may include the drum (210) illustrated in FIGS. 10 and 11 in consideration of the size of the robot cleaner (2), and may also include the drum (310) illustrated in FIGS. 12 and 13.

[0139] According to one embodiment, a cleaner includes a suction unit configured to suck foreign substances from a surface to be cleaned, and a rotatable drum provided in the suction unit. The drum includes a first end having a first end outer diameter as a first end along a rotational axis direction of the drum and including a body connecting portion and a body separation portion spaced apart from the body connecting portion in the rotational axis direction of the drum, a drum body including a second end opposite the first end in the rotational axis direction of the drum and having a second end outer diameter larger than the first end outer diameter, and a connecting body including a connecting portion connectable to the first end of the drum body and connectable to the body separation portion. In a state where the connecting body is connected to the first end of the drum body, the connecting portion is connected to the body separation portion.

[0140] The drum body may be a first drum body. A first end of the connecting body is connectable to the first end of the first drum body. The drum may further include a second drum body having a third end outer diameter along a rotational axis direction of the drum and connectable to a second end of the connecting body opposite the first end of the connecting body to which the first end of the first drum body is connectable, and a fourth end having a fourth end outer diameter opposite the third end of the second drum body along the rotational axis direction of the drum and larger than the third end outer diameter.

[0141] The body connecting portion of the first end may be a first body connecting portion. The connecting portion of the connecting body may be a first connecting portion. The connecting body may further include a second connecting portion at the second end of the connecting body. The third end of the second drum body may include a second body connecting portion that is connectable to the second end of the connecting body and connectable to the first body connecting portion. In a state where the first end of the connecting body is connected to the first end of the first drum body and the second end of the connecting body is connected to the third end of the second drum body, the second body connecting portion may be connected to the second end of the connecting body and the second body connecting portion may be connected to the first body connecting portion.

[0142] The body separation portion of the first end may be a first body separation portion. The third end of the second drum body may include a second body separation portion connectable to the second connection portion. In a state where the third end of the second drum body is connected to the second end of the connection body, the second connection portion may be connected to the second body separation portion.

[0143] The second body connecting portion may be spaced apart from the second body separation portion along the rotational axis direction of the drum.

[0144] The body connecting portion of the first end may be a first body connecting portion. The body separation portion of the first end may be a first body separation portion. The third end of the second drum body may include a second body connecting portion and a second body separation portion that is spaced apart from the second body connecting portion in the direction of the rotational axis of the drum.

[0145] The connecting portion of the connecting body may be a first connecting portion. The first end of the connecting body may further include a second connecting portion connectable to the first body connecting portion. The second end of the connecting body may include a third connecting portion connectable to the second body separation portion, and a fourth connecting portion connectable to the second body connecting portion.

[0146] The first drum body may include a first material. The drum may further include a drum brush comprising a second material that is more flexible than the first material. The first drum body may include a first brush mounting portion to which a first portion of the drum brush is detachably mountable. The second drum body may include a second brush mounting portion to which a second portion of the drum brush is detachably mountable. The connecting body may include a connecting brush mounting portion to which a third portion of the drum brush is detachably mountable.

[0147] The first drum body may include a first body support portion into which at least a portion of the first end of the connecting body is insertable. The second drum body may include a second body support portion into which at least a portion of the second end of the connecting body is insertable. In a state where a portion of the first end of the connecting body is inserted into the first body support portion and the second end of the connecting body is inserted into the second body support portion, the first drum body and the second drum body may be coupled to the connecting body.

[0148] The first drum body may include a first material. The second drum body may include a second material. The drum may further include a drum brush comprising a third material that is more flexible than the first material and the second material. The first drum body may include a first brush mounting portion to which at least a first portion of the drum brush is detachably mountable. The second drum body may include a second brush mounting portion to which at least a second portion of the drum brush is detachably mountable.

[0149] The first brush mounting portion may extend spirally in a first direction along the outer circumference of the first drum body. The second brush mounting portion may extend spirally in a second direction along the outer circumference of the second drum body, and the first direction may be different from the second direction. The first brush mounting portion and the second brush mounting portion may be connected at a boundary portion. The connecting body may include a blocking portion provided to cover at least a portion of the boundary portion.

[0150] In a state where the above connecting body is connected to the first drum body and the second drum body, the blocking portion may form a portion of the outer circumferential surface of the drum.

[0151] The connecting portion of the connecting body may be a first connecting portion. The connecting body may further include a second connecting portion connectable to the body connecting portion. When the connecting body is connected to the first end of the drum body, the second connecting portion may be connected to the body connecting portion.

[0152] The above connecting body may include a connecting surface forming portion. When the connecting body is connected to the first end of the drum body, the connecting surface forming portion may form at least a portion of the outer circumferential surface of the drum.

[0153] The above connecting body may include a diameter that does not change along the rotational axis direction of the drum.

[0154] According to one embodiment, a vacuum cleaner includes a suction unit and a drum rotatably provided on the suction unit. The drum includes a first drum body in which an outer diameter of a first end along a rotational axis direction of the drum is smaller than an outer diameter of a second end opposite the first end, a second drum body in which an outer diameter of a third end closer to the first drum body along a rotational axis direction of the drum is smaller than an outer diameter of a fourth end opposite the third end, and a connecting body connectable to the first end of the first drum body and the third end of the second drum body, the connecting body including a connecting surface forming portion that forms an outer peripheral surface of the drum when the connecting body is connected to the first drum body and the second drum body.

[0155] The drum may include a drum brush comprising a material more flexible than the first drum body and the second drum body. The first drum body may include a first brush mounting portion, to which at least a portion of the drum brush is detachably mountable, and a first brush mounting portion that is provided in a spiral shape along an outer circumference of the first drum body. The second drum body may include a second brush mounting portion, to which at least a portion of the drum brush is detachably mountable, and a second brush mounting portion that extends in a spiral shape along an outer circumference of the second drum body, but extends in a direction different from a direction in which the first brush mounting portion extends.

[0156] The above connecting body may include a blocking portion provided to cover at least a portion of a boundary portion where the first brush mounting portion and the second brush mounting portion are connected, and the blocking portion may be provided to form a portion of an outer circumferential surface of the drum when the connecting body is coupled to the first drum body and the second drum body.

[0157] The above connecting body may include a connecting brush mounting portion, in which at least a portion of the drum brush is detachably mountable, and a connecting brush mounting portion connected to the first brush mounting portion and the second brush mounting portion.

[0158] The boundary portion where the first drum body and the second drum body are connected may be provided to be spaced apart in the direction of the rotational axis of the drum from the boundary portion where the first drum body and the connection body are connected.

[0159] According to the concept of the present disclosure, the drum of the vacuum cleaner can be manufactured in various sizes by combining multiple parts, so that usability can be improved.

[0160] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains.

[0161] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. A suction unit configured to suck up foreign substances from the cleaning surface; and A rotatable drum provided in the above suction portion; The above drum, A drum body including a first end having a first end outer diameter as a first end along the rotational axis direction of the drum and including a body connecting portion and a body separation portion spaced apart from the body connecting portion in the rotational axis direction of the drum, and a second end having a second end outer diameter opposite to the first end in the rotational axis direction of the drum and larger than the first end outer diameter; and A connecting body comprising a connecting portion connectable to the first end of the drum body and connectable to the body separation portion; A cleaner in which the connecting portion is connected to the body separation portion while the connecting body is connected to the first end of the drum body.

2. In paragraph 1, The above drum body is the first drum body, The first end of the above connecting body is connectable to the first end of the above first drum body, A cleaner further comprising a second drum body, wherein the drum has a third end outer diameter along the rotational axis direction of the drum and a third end connectable to a second end of the connecting body opposite the first end of the connecting body to which the first end of the first drum body is connectable, and a fourth end opposite the third end of the second drum body along the rotational axis direction of the drum and having a fourth end outer diameter larger than the third end outer diameter.

3. In paragraph 2, The body connecting portion of the above first end is a first body connecting portion, The above connecting part of the above connecting body is a first connecting part, The above connecting body further includes a second connecting portion at the second end of the above connecting body, The third end of the second drum body includes a second body connecting portion that is connectable to the second end of the connecting body and connectable to the first body connecting portion, A cleaner wherein the first end of the connecting body is coupled to the first end of the first drum body and the second end of the connecting body is coupled to the third end of the second drum body, wherein the second body connecting portion is coupled to the second end of the connecting body and the second body connecting portion is connected to the first body connecting portion.

4. In paragraph 3, The above body separation part of the above first end is the first body separation part, The third end of the second drum body includes a second body separation portion connectable to the second connecting portion, A cleaner in which the third end of the second drum body is connected to the second end of the connecting body, and the second connecting portion is connected to the second body separation portion.

5. In paragraph 4, A cleaner wherein the second body connecting portion is spaced apart from the second body separation portion along the rotation axis direction of the drum.

6. In paragraph 2, The body connecting portion of the above first end is a first body connecting portion, The above body separation part of the above first end is the first body separation part, The third end of the second drum body, Second body connection; and A cleaner comprising a second body separation portion spaced apart from the second body connecting portion in the direction of the rotation axis of the drum.

7. In paragraph 6, The above connecting part of the above connecting body is a first connecting part, The first end of the above connecting body further includes a second connecting portion connectable to the first body connecting portion, The second end of the above connecting body, a third connecting portion connectable to the second body separation portion; and A vacuum cleaner comprising a fourth connecting portion connectable to the second body connecting portion.

8. In paragraph 7, The first drum body includes a first material, The drum further comprises a drum brush comprising a second material more flexible than the first material, The first drum body includes a first brush mounting portion on which a first portion of the drum brush is detachably mountable, The second drum body includes a second brush mounting portion to which the second part of the drum brush is detachably mountable, A vacuum cleaner wherein the above connecting body includes a connecting brush mounting portion to which the third part of the drum brush is detachably mountable.

9. In paragraph 2, The first drum body includes a first body support portion into which at least a portion of the first end of the connecting body is insertable, The second drum body includes a second body support portion into which at least a portion of the second end of the connecting body is insertable, A cleaner in which the first drum body and the second drum body are coupled to the connecting body, wherein a part of the first end of the connecting body is inserted into the first body support and the second end of the connecting body is inserted into the second body support.

10. In paragraph 2, The first drum body includes a first material, The second drum body includes a second material, The drum further includes a drum brush comprising a third material that is more flexible than the first material and the second material, The first drum body includes a first brush mounting portion on which at least a first portion of the drum brush is detachably mountable, A vacuum cleaner wherein the second drum body includes a second brush mounting portion to which at least a second portion of the drum brush is detachably mountable.

11. In paragraph 10, The first brush mounting portion extends spirally in the first direction along the outer circumference of the first drum body, The second brush mounting portion extends spirally in a second direction along the outer circumference of the second drum body, and the first direction is different from the second direction. The first brush mounting portion and the second brush mounting portion are connected at the boundary portion, A cleaner wherein the above connecting body includes a blocking portion provided to cover at least a portion of the boundary portion.

12. In paragraph 11, A cleaner in which the blocking portion forms a portion of the outer surface of the drum, while the connecting body is connected to the first drum body and the second drum body.

13. In paragraph 1, The above connecting part of the above connecting body is a first connecting part, The above connecting body further includes a second connecting portion connectable to the body connecting portion, A cleaner in which the second connecting portion is connected to the body connecting portion while the connecting body is connected to the first end of the drum body.

14. In paragraph 1, The above connecting body includes a connecting surface forming portion, A cleaner in which the connecting body is connected to the first end of the drum body, and the connecting surface forming portion forms at least a portion of the outer surface of the drum.

15. In paragraph 1, A cleaner wherein the above connecting body has a diameter that does not change along the rotational axis direction of the drum.

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