Cleaner

Abstract

The cleaner includes a cleaner body and a drum rotatable about a longitudinal axis in a first direction. The drum includes a drum body and a brush member, the drum body including: a first tapered portion having a diameter decreasing from a first end of the drum body along a longitudinal axis of the drum; a second tapered portion having a diameter decreasing from a second end of the drum body along a longitudinal axis of the drum; and a collecting portion located at a position where the diameter of the first tapered portion and the diameter of the second tapered portion are minimum; and the brush member extends between the first end portion of the drum body and the second end portion of the drum body, and protrudes outward from the drum body. The drum is configured such that a distance from a longitudinal axis of the drum to a distal end of the brush member is maintained across the first tapered portion, the collecting portion, and the second tapered portion, and rotation of the drum guides foreign matter to be drawn into the cleaner body and guides foreign matter wound around the drum toward the collecting portion.

Description

Technical Field

[0001] The present disclosure relates to a cleaner, and more particularly, to a cleaner including a roller. Background Art

[0002] Generally, a cleaner is an appliance that cleans an area to be cleaned by sweeping or dispersing foreign substances (such as dust or hair) present in a cleaning space and sucking in the foreign substances (such as the dispersed dust or hair) by suction force.

[0003] The cleaner includes: a cleaner main body, a suction head connected to the cleaner main body through a connection pipe and having a suction port, and a roller rotatably mounted on the suction head.

[0004] The roller includes a roller main body formed of hard metal or plastic and a brush having a predetermined length on an outer circumferential surface of the roller main body.

[0005] When foreign substances (such as dust or hair) in the cleaning space are dispersed by rotation of the roller, the foreign substances (such as the dispersed dust or hair) are sucked into the suction port by the suction force generated inside the cleaner main body, and the sucked foreign substances move to a dust collection container.

[0006] As the roller rotates, foreign substances such as hair, animal hair, and thread among the foreign substances sucked through the suction port may be caught between the plurality of brushes and wound around the roller. Summary of the Invention

[0007] Technical Problem to be Solved

[0008] As is apparent from the above, according to one aspect of the present disclosure, the cleaner can provide easy maintenance.

[0009] According to one aspect of the present disclosure, the cleaner can easily remove foreign substances entangled in the roller.

[0010] According to one aspect of the present disclosure, the cleaner can allow foreign substances to move to the center of the roller according to the rotation of the roller.

[0011] The effects of the present disclosure are not limited to the effects described above, and those skilled in the art will clearly understand other effects not described above from the above detailed description.

[0012] Technical Solution

[0013] According to an embodiment of the present disclosure, a cleaner includes a cleaner body and a roller. The roller is capable of rotating about a longitudinal axis of the roller in a first direction. The roller includes a roller body and a brush member. The roller body includes: a first tapered portion having a diameter that decreases along the longitudinal axis of the roller from a first end of the roller body; a second tapered portion having a diameter that decreases along the longitudinal axis of the roller from a second end of the roller body; and a collection portion located at a position where the diameters of the first tapered portion and the second tapered portion are minimum. And the brush member extends between the first end of the roller body and the second end of the roller body and protrudes outward from the roller body. The roller is configured such that: a distance from the longitudinal axis of the roller to an end tip of the brush member is maintained across the first tapered portion, the collection portion, and the second tapered portion, and rotation of the roller guides inhaled foreign objects into the cleaner body and guides foreign objects wound around the roller toward the collection portion.

[0014] According to an embodiment of the present disclosure, the brush member may be formed to be inclined in a second direction opposite to the first direction between the first end of the roller body and the second end of the roller body.

[0015] According to an embodiment of the present disclosure, the brush member may extend from the first end of the roller body to the collection portion inclined in a second direction opposite to the first direction, and extend from the second end of the roller body to the collection portion inclined in the second direction.

[0016] According to an embodiment of the present disclosure, the roller body may include a coupling portion protruding from the first tapered portion, the collection portion, and the second tapered portion. The brush member may be capable of being coupled to the coupling portion.

[0017] According to an embodiment of the present disclosure, the coupling portion may be formed to have a height that increases in a direction from the first end of the roller body toward the collection portion and increases in a direction from the second end of the roller body toward the collection portion.

[0018] According to an embodiment of the present disclosure, the coupling portion may extend from the first end of the roller body to the collection portion inclined in a second direction opposite to the first direction, and extend from the second end of the roller body to the collection portion inclined in the second direction.

[0019] According to an embodiment of the present disclosure, the collecting part may be positioned at the center of the drum body along the longitudinal axis of the drum and may have a constant diameter.

[0020] According to an embodiment of the present disclosure, the drum body may include a partitioning part that is located at the longitudinal center of the drum body and protrudes outward along the circumferential direction of the drum body. The partitioning part may divide the collecting part into a first collecting part and a second collecting part.

[0021] According to an embodiment of the present disclosure, the first collecting part and the second collecting part may be formed symmetrically with respect to the partitioning part, and the first collecting part and the second collecting part may have a constant diameter.

[0022] According to an embodiment of the present disclosure, the brush member may include a plurality of brush members. The plurality of brush members may be spaced apart from each other along the circumferential direction of the drum body.

[0023] According to an embodiment of the present disclosure, the drum may include ribs that protrude radially from the drum body along the outer circumferential surface of the drum body and are located between corresponding ones of the plurality of brush members.

[0024] According to an embodiment of the present disclosure, the ribs may be formed such that the height from the longitudinal axis of the drum to the end tip of the ribs increases from the collecting part toward the first end of the drum body and increases from the collecting part toward the second end of the drum body.

[0025] According to an embodiment of the present disclosure, the brush member may include a brush or a blade.

[0026] According to an embodiment of the present disclosure, the blade may include an elastic material.

[0027] Embodiments of the present disclosure may provide a cleaner that includes a cleaner body and a drum. The cleaner body has a dust collecting container configured to collect foreign matter. The drum is disposed at an inlet to guide the inhalation of foreign matter, and the drum is arranged to be rotatable in a first direction R.

[0028] The drum may include a drum body, the drum body including a collecting portion and a tapered portion. The collecting portion has a cylindrical or circular cylindrical shape with a constant diameter. The diameter of the tapered portion may decrease as it is directed from one end of the axis of the drum towards the collecting portion. The drum may include a brush member that projects from the drum body and is configured to disperse foreign matter around the inlet. The brush member may be positioned so as to maintain a distance from the axis of the drum to the end tip of the brush member along the direction of the axis of the drum. The brush member may be formed to be inclined in a second direction opposite to the first direction while extending in the radially outward direction of the drum body.

[0029] The brush member may be provided in a plurality of units. The plurality of brush members may be spaced apart from each other along the circumferential direction of the drum body.

[0030] The drum body may further include a coupling portion that projects from the outer circumferential surface of the drum body to allow the brush member to be coupled to the coupling portion. The coupling portion has a height that increases from both ends of the axis of the drum towards the collecting portion.

[0031] The drum body may further include a partitioning portion that is located at the center of the drum body with respect to the direction of the axis A of the drum and projects along the circumferential direction of the drum body. The partitioning portion is configured to divide the collecting portion into a first collecting portion and a second collecting portion.

[0032] The first collecting portion and the second collecting portion may be symmetrically arranged with respect to the partitioning portion and have a constant diameter.

[0033] Embodiments of the present disclosure may provide a cleaner, the cleaner including a cleaner body and a drum. The cleaner body has a dust collection container configured to collect foreign matter. The drum is disposed at an inlet to guide the inhalation of foreign matter, and the drum is arranged to be rotatable in a first direction R. The drum may include: a collection portion formed to allow foreign matter to be collected therein; a tapered portion having a cross-section that may decrease as it is guided from two ends of the axis of the drum toward the collection portion; and a coupling portion protruding from the collection portion and the tapered portion and having a height that may increase as it is guided from one end of the drum toward the collection portion. The drum may include at least one brush member that is formed to be inclined in a second direction opposite to the first direction while extending from two ends of the axis of the drum body toward the collection portion, and the at least one brush member protrudes in a radial direction of the drum body. The brush member is coupled to the coupling portion such that a distance from the axis of the drum to the end tip of the brush member may be maintained across the collection portion and the tapered portion.

[0034] The brush member may be inclined in a second direction opposite to the first direction toward the end tip of the brush member.

[0035] Advantageous Effects

[0036] As is obvious from the above, according to one aspect of the present disclosure, the cleaner may provide easy maintenance.

[0037] According to one aspect of the present disclosure, the cleaner may easily remove foreign matter entangled in the drum.

[0038] According to one aspect of the present disclosure, the cleaner may allow foreign matter to move to the center of the drum according to the rotation of the drum.

[0039] The effects of the present disclosure are not limited to the effects described above, and those skilled in the art will clearly understand other effects not described above from the above detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a perspective view illustrating a cleaner according to an embodiment of the present disclosure.

[0041] Figure 2 is a perspective view illustrating a suction head of the cleaner shown in Figure 1 according to an embodiment of the present disclosure.

[0042] Figure 3 is a perspective view illustrating a state in which the suction head shown in Figure 2 is disassembled.

[0043] Figure 4 It is a bottom view of a suction head with a drum mounted thereon according to an embodiment of the present disclosure.

[0044] Figure 5 It is a perspective view of a drum including a brush according to an embodiment of an embodiment of the present disclosure.

[0045] Figure 6 It is a view showing a state in which the brush is disassembled from the drum shown in Figure 5

[0046] Figure 7 It is a view showing Figure 5 the drum when viewed in one direction.

[0047] Figure 8 It is Figure 7 an enlarged view of the central portion of

[0048] Figure 9 In Figure 5 a is a view of one side of the drum shown in Figure 9 and Figure 5 b in

[0049] Figure 10 is a view showing a state in which foreign matter wound around the drum moves toward the center according to the rotation of the drum.

[0050] Figure 11 It is a perspective view of a drum having a partition portion for partitioning a collection portion provided at a central portion of the drum according to an embodiment of the present disclosure.

[0051] Figure 12 It is a view showing Figure 11 the drum shown in

[0052] Figure 13 when viewed in one direction. Figure 12 It is an enlarged view of the central portion of the drum of

[0053] Figure 14 It is a view of a drum including ribs protruding in the radial direction of the drum according to an embodiment of an embodiment of the present disclosure.

[0054] Figure 15 In Figure 14 a is a view of one side of the drum shown in Figure 15 and Figure 14 b in ​

[0055] Figure 16 is a view of a drum in which a brush member is provided as a blade according to an embodiment of the present disclosure.

[0056] Figure 17 is a view of a drum of a partition portion including a partition collection portion located at a central portion of the drum according to an embodiment of the present disclosure. Figure 16 of Detailed Description

[0057] The embodiments described in this specification and the configurations shown in the drawings are merely examples of the preferred embodiments of the present disclosure, and various modifications can be made at the time of filing the present disclosure to replace the embodiments and drawings of this specification.

[0058] In addition, the same symbols or numbers in the drawings of the present disclosure represent components or elements configured to perform substantially the same functions.

[0059] In addition, the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising," "including," "having," and / or "with" specify the presence of the stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0060] In addition, it should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, the elements are not limited by these terms, and these terms are only used to distinguish one element from another. For example, without departing from the scope of the present disclosure, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. The term "and / or" includes any and all combinations of one or more of the associated listed items.

[0061] In addition, the terms "vertical direction," "lower side," "front-rear direction," etc. used herein are defined with respect to the drawings, but these terms may not limit the shapes and positions of the corresponding components.

[0062] In addition, although for ease of description, the stick-type cleaner as an example of a type of cleaner is described, the configuration of the present disclosure is not limited to the stick-type cleaner and can be applied to other cleaners. For example, the configuration of the present disclosure can be applied to cleaner types such as bucket-type cleaners and robot cleaners other than the stick-type cleaner.

[0063] In Figures 5 to 17The brush member 1200 or 4200 shown in the figure is not limited to the meaning of a brush or a hairbrush for sweeping dust or garbage, and may have the meaning of brushing including sweeping, dust removal, etc. Therefore, the brush member 1200 or 4200 according to the present disclosure is not limited to the form of a hairbrush in which multiple fibers are gathered, and all other forms may constitute the brush member 1200 or 4200 as long as they can sweep or remove foreign matter on the cleaning surface. For example, the brush member 1200 or 4200 may include a hard or soft fiber hairbrush, cotton flannel, elastic blades, etc. that can sweep the cleaning surface.

[0064] In addition, although the brush fibers forming the hairbrush 1200 are illustrated as a main body part, this is only illustrated for the convenience of describing the hairbrush 1200 as a unit in which multiple brush fibers are gathered. The hairbrush 1200 may be provided as shown Figure 6 as a component of the present disclosure.

[0065] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings.

[0066] Figure 1 is a perspective view of a cleaner illustrating an embodiment according to the present disclosure. Figure 2 is illustrated in Figure 1 a perspective view of the suction head of the cleaner shown. Figure 3 is illustrated in which Figure 2 the suction head shown is in a disassembled state. Figure 4 is a bottom view of the suction head on which a roller is mounted.

[0067] Referring to Figures 1 to 4 , the cleaner 1 includes: a cleaner body 10, a suction head 100 connected to the cleaner body 10 through a connecting pipe 20, and a roller 1000 rotatably coupled to the suction head 100.

[0068] The cleaner body 10 may include a dust collector 40 and a suction motor (not shown). The dust collector 40 is detachably coupled to the cleaner body 10, and the suction motor is configured to generate a suction force. The suction motor may be disposed inside a motor housing.

[0069] The dust collector 40 may be disposed more upstream in the air flow than the suction motor to separate dust or foreign matter included in the air flowing into the inlet 43 and store the separated dust or foreign matter. The dust collector 40 may include a dust separator (not shown) and a dust collection container (not shown). The dust separator is configured to separate through the suction port of the suction head 100 ( Figure 5The dust or foreign matter included in the introduced air in 101a), and the dust collection container is configured to store the dust or foreign matter separated by the dust separator.

[0070] The dust collector 40 can be detachably coupled to the cleaner main body 10. The dust collector 40 can include a button, and the button can be formed to allow the dust collector 40 to be separated from the cleaner main body 10 or to allow the dust collector 40 to be coupled to the cleaner main body 10.

[0071] The cleaner main body 10 can include a handle 11, and the user holds the handle 11 to operate the cleaner. The user can hold the handle 11 and move the cleaner in the front-rear direction.

[0072] The cleaner main body 10 can include a control part 12. The user can turn on / off the cleaner or adjust the suction intensity by operating a power button etc. provided on the control part 12.

[0073] The cleaner main body 10 can include a battery 13. The battery 13 can be detachably coupled to the cleaner main body 10. When the battery 13 runs out of power, the discharged battery 13 can be replaced with a pre-charged battery 13 so that the operation time of the cleaner can be increased. Alternatively, the battery 13 can be configured to be integrated with the cleaner main body 10.

[0074] The cleaner main body 10 can include a filter housing 15. The filter housing 15 can be configured in a substantially annular shape, and a filter (not shown) can be accommodated in the filter housing 15. The type of the filter is not limited, but as an example, a high-efficiency particulate air (HEPA) filter can be arranged in the filter housing 15. The filter (not shown) can filter out ultrafine dust etc. that are not filtered by the dust separator of the dust collector 40. The filter housing 15 can include a plurality of holes 16, and the air passing through the filter is discharged to the outside of the cleaner through the plurality of holes 16.

[0075] The cleaner main body 10 can include a connecting pipe coupler 14. The connecting pipe coupler 14 can be configured to allow the connecting pipe 20 to be separated from the cleaner main body 10 or to allow the connecting pipe 20 to be coupled to the cleaner main body 10.

[0076] The connecting pipe 20 can include a pipe or a flexible hose having a predetermined stiffness. The connecting pipe 20 can transfer the suction force generated by the suction motor of the cleaner main body 10 to the suction head 100, and guide the air and foreign matter inhaled through the suction head 100 to the cleaner main body 10.

[0077] The suction head 100 can be connected to the cleaner main body 10 through the connecting pipe 20. The suction head 100 can be rotatably coupled to the connecting pipe 20.

[0078] The suction head 100 may have a drum 1000 connected to the suction head 100 in a rotatable manner. The drum 1000 may be arranged to contact the surface to be cleaned and suck foreign matters such as dust present on the surface to be cleaned into the suction head 100. Specifically, as the drum 1000 rotates, the foreign matters on the surface to be cleaned may be sucked into the suction head 100 through the suction port 101a of the suction head 100. The foreign matters sucked into the suction head 100 may be forced by the suction motor of the cleaner main body 10 to travel through the communication hole 101b that connects the connection pipe 20 and the suction head 100, and then enter the connection pipe 20, thereby moving to one side of the cleaner main body 10.

[0079] The suction head 100 may include a housing 102 and a suction connector 70. The housing 102 has a suction port 101a, and the suction connector 70 connects the housing 102 and the connection pipe 20 to each other. Inside the suction head 100, the drum 1000 arranged to be rotatable on the suction head 1000 may be disposed such that foreign matters can be effectively sucked into the housing 102 through the suction port 101a.

[0080] The housing 102 of the suction head 100 may be formed by assembling an upper housing 110, a lower housing 120, a side housing 130, and a detachable drum cover 140.

[0081] The side housing 130 may be arranged to be connected to the left side of the lower housing 120. In this case, the detachable drum cover 140 may be connected to the right side of the drum 1000 and disposed on the right side of the lower housing 120. However, it is not limited thereto, and the left - right arrangement of the side housing 130 and the detachable drum cover 140 may be interchangeable.

[0082] The detachable drum cover 140 may be arranged such that the drum body 1100 is connected in a rotatable manner. As described above, the detachable drum cover 140 may be disposed on the right side of the lower housing 120, but it is not limited thereto.

[0083] The detachable drum cover 140 may include a fixing part 141 and a cover switch 142. The cover switch 142 is arranged to allow the drum 1000 to be connected to the housing 102. Since the detachable drum cover 140 includes the fixing part 141 and the cover switch 142, the drum 1000 may be detachably connected to one side of the housing 102. In addition, the detachable drum cover 140 may also be detachably connected to the upper housing 110 and the lower housing 120 together with the drum 1000 through the fixing part 141 and the cover switch 142.

[0084] The fixed part 141 can be formed to protrude from the detachable drum cover 140 toward the upper housing 110 and / or the lower housing 120. The fixed part 141 can be provided with a fixing hook (not labeled in the drawings), and the lid switch 142 is arranged to press the fixing hook. The upper housing 110 can include an insertion groove 110a formed in a shape corresponding to the fixed part 141 to allow the fixed part 141 to be inserted into the insertion groove 110a. The insertion groove 110a of the upper housing 110 can be provided with a fastening groove 110b to which the fixing hook of the fixed part 141 can be fixed.

[0085] According to the above configuration, the detachable drum cover 140 can be arranged to be easily separated from the upper housing 110 and the lower housing 120, and the drum 1000 can also be arranged to be easily separated from the housing 102 of the suction head 100. However, the above description of the configuration of the detachable drum cover 140 is only an example for detachably coupling the drum 1000 to the housing 102, and the configuration of the detachable drum cover 140 is not limited to the above description. For example, the detachable drum cover 140 can be detachably mounted on the upper housing 110 and the lower housing 120 in a different manner. Alternatively, when the detachable drum cover 140 is coupled to the upper housing 110 and the lower housing 120, the drum 1000 can be separated from or mounted to the housing 102.

[0086] The drum 1000 can include bearing caps 150 and drive caps 160 arranged at two ends of the drum 1000. Specifically, the bearing cap 150 can be arranged on one end of the drum 1000 adjacent to the side housing 130, and the drive cap 160 can be arranged on the other end of the drum 1000 adjacent to the detachable drum cover 140.

[0087] The bearing cap 150 can be arranged to cover one end of the drum 1000 and be supported on one end of the drum 1000 and the inner circumferential surface of the drum body 1100. The bearing cap 150 can be set to be fixed to one end of the drum body 1100 on the side facing the side housing 130. That is, the bearing cap 150 can be set to be fixed to one end of the drum body 1100 facing the side housing 130.

[0088] The bearing cap 150 can be formed in a cylindrical shape including a hollow portion so as to be inserted into the drum body 1100 and be supported on the inner circumferential surface of the drum body 1100.

[0089] The drive cap 160 can be arranged to cover the other end opposite to the end of the drum 1000 where the bearing cap 150 is arranged, and the drive cap 160 can be supported on the other end of the drum 1000 and the inner circumferential surface of the drum body 1100.

[0090] The drive cap 160 can be fixed to one end of the drum body 1100 such that the drum body 1100 can be rotatably coupled to the detachable drum cover 140.

[0091] The detachable drum cover 140 can include a drive cap fastening member 143 which is arranged such that the detachable drum cover 140 is connected to the drive cap 160, and the drive cap fastening member 143 can be rotatably supported by a drive cap bearing 144 provided on the detachable drum cover 140. The drive cap fastening member 143 can be arranged parallel to the rotation axis of the drum body 1100 such that the drum body 1100 can rotate relative to the detachable drum cover 140.

[0092] The drive cap 160 can be formed to include a cylindrical shape having a hollow portion so as to be inserted into the drum body 1100 and supported on the inner circumferential surface of the drum body 1100.

[0093] The bearing cap 150 can be provided with cap fixing protrusions 152 on the outer circumferential surface of the bearing cap 150. The cap fixing protrusions 152 can be provided in plurality. Each of the plurality of cap fixing protrusions can be spaced apart from each other at a predetermined interval on the outer circumferential surface of the bearing cap 150.

[0094] Similarly, the drive cap 160 can also be provided with cap fixing protrusions 162 on the outer circumferential surface of the drive cap 160. The cap fixing protrusions 162 can be provided in plurality. Each of the plurality of cap fixing protrusions can be spaced apart from each other at a predetermined interval on the outer circumferential surface of the drive cap 160.

[0095] The inner circumferential surface of the drum body 1100 can include cap fixing grooves 1140 corresponding to the cap fixing protrusions 152 of the bearing cap 150 and the cap fixing protrusions 162 of the drive cap 160. The cap fixing grooves 1140 can be formed at the two ends of the drum body 1100 where the bearing cap 150 and the drive cap 160 are arranged. Each of the cap fixing protrusions 152 and 162 can be inserted into a corresponding one of the cap fixing grooves 1140, and each of the bearing cap 150 and the drive cap 160 can be fixed to the inner circumferential surface of the drum body 1100.

[0096] However, the above description of the drum 1000 including the bearing cap 150 and the drive cap 160 is merely an example of the drum 1000 being rotatably coupled to the suction head 100, and the configuration of the drum 1000 is not limited thereto. The bearing cap 150 and the drive cap 160 may be coupled to the drum body 1100 in a manner different from the above description, or the drum 1000 may not include the bearing cap 150 or the drive cap 160. For example, the drum 1000 may include a separate shaft member (not shown) disposed inside the drum body 1100 along the rotation axis of the drum body 1100. In this case, when the shaft member is configured to rotatably support the drum body 1100 by being connected to the power unit 170, the drum 1000 may be rotatably coupled to the suction head 100.

[0097] The suction head 100 may include a power unit 170. The power unit 170 may include a motor 171 positioned inside the housing 110 and generating power. The power unit 170 may include a motor bearing 173 positioned on one side of the drum 1000 and coupled to the rotation shaft. The power unit 170 may include a belt 172 having one side coupled to the motor bearing 173 and the other side coupled to the rotation shaft of the motor 171 to transmit the power of the motor 171 to the drum 1000.

[0098] As a result, when the motor 171 generates power and the rotation shaft of the motor 171 rotates, the belt 172 moves, and due to the movement of the belt 172, the motor bearing 173 rotates. The motor bearing 173 may be coupled to the bearing cap 150 of the drum body 1100. As the motor bearing 173 rotates, the bearing cap 150 may rotate, and the drum body 1100 coupled to the bearing cap 150 may also rotate. The brush members 1200 or 4200 protruding from or coupled to the drum body 1100 may also rotate together with the drum body 1100, thereby removing foreign substances from the surface to be cleaned.

[0099] In the above description, the cleaner 1 (e.g., a stick cleaner) equipped with the suction head 100 has been described, but the drum 1000 according to the present disclosure may be installed on a cleaner 1 (e.g., a robot cleaner) without the suction head 100.

[0100] The robot cleaner may include a cleaner body and a suction port. The cleaner body is capable of moving on the surface to be cleaned, and the suction port sucks foreign substances such as dust from the surface to be cleaned. The suction port may be provided on the bottom surface of the cleaner body. The drum 1000 may be positioned at the suction port. As in the above-described cleaner 1, the drum 1000 may be rotatably provided on the side of the suction port.

[0101] Hereinafter, the structure and function of the drum 1000 will be described in detail.

[0102] Figure 5 is a perspective view of a drum including a brush according to an embodiment. Figure 6 is a view showing where the brush is Figure 5 separated from the drum shown. Figure 7 is a view showing Figure 5 the drum when viewed in one direction. Figure 8 is Figure 7 an enlarged view of the central portion. Figure 9 In [a], it is a view showing one side of the drum shown in Figure 5 [[a]], and Figure 9 in [b], it is a view taken along line X-X' of the drum shown in Figure 5 [[b]]. Figure 10 is a view showing a state where foreign matter wound around the drum moves toward the center as the drum rotates.

[0103] Referring to Figures 5 to 10 , the drum 1000 may include a drum body 1100 and a brush member 1200 or 4200 protruding from the drum body 1100. The brush member 1200 or 4200 may be provided as at least one unit. The brush member 1200 or 4200 may be provided as a plurality.

[0104] The brush member 1200 or 4200 may include a first brush member 1200a or 4200a and a second brush member 1200b or 4200b. The first brush member 1200a or 4200a may be spaced apart from the second brush member 1200b or 4200b along the circumferential direction of the drum body 1100. The first brush member 1200a or 4200a may protrude in a direction opposite to the direction in which the second brush member 1200b or 4200b protrudes. That is, the first brush member 1200a or 4200a and the second brush member 1200b or 4200b may be positioned at an angle of 180 degrees with respect to each other. In the drawings, the brush member is illustrated as two brush members 1200 protruding in opposite directions and two brush members 4200 protruding in opposite directions, but is not limited thereto, and the brush member may be formed as one or three or more brush members. In addition, even when the brush member 1200 or 4200 is formed as three or more brush members 1200 or 4200, the brush member 1200 or 4200 may be arranged within a specific angle in addition to being spaced apart from each other at an angle of 120 degrees.

[0105] The brush member 1200 or 4200 may include a brush 1200. The brush 1200 may be formed by aggregating a plurality of fibers having a predetermined stiffness. The brush 1200 may be generally a broom or a brush. The brush 1200 may be formed of a nylon material. The brush 1200 may disperse foreign matter by hitting or sweeping the surface to be cleaned.

[0106] The brush 1200 may be provided as at least one unit. The brush 1200 may be provided as a plurality of units. The brush 1200 may include a first brush 1200a and a second brush 1200b. The first brush 1200a may be spaced apart from the second brush 1200b along the circumferential direction of the drum body 1100. The first brush 1200a and the second brush 1200b may be positioned at an interval of 180 degrees relative to each other. That is, the first brush 1200a may protrude in a direction opposite to the direction in which the second brush 1200b protrudes. In the drawings, the brush 1200 is illustrated as having only the first brush 1200a and the second brush 1200b, but the brush may be formed as one or three or more brushes as needed.

[0107] The drum body 1100 may be provided to be rotatable by means of a power part ( Figure 3 170 in). As the drum body 1100 rotates, the drum 1000 may rotate, and foreign matter on the surface to be cleaned may be sucked into the suction head 100.

[0108] The drum body 1100 may receive a driving force from a drive source such as the power part 170, so that the drum 1000 may rotate relative to the suction head 100. The drum body 1100 may be provided to be rotatable relative to the surface to be cleaned as the bearing cap 150 coupled to one side of the drum body 1100 rotates. When the drum 1000 is observed from one side of the side housing ( Figure 3 130 in) and the bearing cap ( Figure 3 150 in), the drum 1000 may rotate in a first direction R, that is, rotate in a clockwise direction R.

[0109] At least a part of the drum body 1100 may be formed in a cylindrical shape. Since the drum body 1100 is a rotating body, the drum body 1100 may be symmetrically formed about an axis A. Both the bearing cap 150 coupled to one side of the drum body 1100 and the drive cap 160 coupled to the other side may be positioned on the axis A.

[0110] The drum body 1100 may be formed in a cylindrical shape having a hollow portion. The hollow portion of the drum body 1100 may be formed to extend along the longitudinal direction of the drum body 1100, and in other words, the hollow portion of the drum body 1100 may be formed to extend along the longitudinal direction of the drum 1000. That is to say, the drum body 1100 may have a tube shape. In this case, the brush body 1100 can be provided with reduced weight and material cost, and it can have a partition portion ( Figure 11 2100 in) described below. However, the shape of the drum body 1100 is not limited thereto, and the drum body 1100 may have the shape of a solid rod without an empty space inside. As shown in the figure, the drum body 1100 may be hollow in a part of the drum body 1100. As described above, while reducing the material cost, the rotational speed can be adjusted by fixing a certain quality level.

[0111] The drum 1000, which is a rotating body rotating about an axis A along the longitudinal direction, may have a generally cylindrical shape, but is not limited thereto. The drum 1000 may be provided as a polygonal column having a shape close to a cylindrical shape. For example, the drum 1000 may have a hexagonal cross-section cut along a direction perpendicular to the axis A. Alternatively, the cross-section of the drum 1000 may be elliptical or oval. When the drum 1000 is provided as a polygonal column, since the brush member 1200 or 4200 or the coupling portion 1130 can be provided on a flat surface, it may be beneficial for manufacturing. In addition, since the shape can become similar to the cylindrical or columnar shape shown in the drawings in proportion to the increase in the number of facets of the cross-section of the drum 1000, the shape can be changed as needed.

[0112] The drum body 1100 may include a tapered or tapering portion 1110 and a collecting portion 1120. The tapered portion 1110 has a diameter that decreases from both ends toward the center in the direction of the axis A, and the collecting portion 1120 is located between the tapered portions 1110. The tapered portion 1110 may be set in a generally frustoconical shape. The collecting portion 1120 may be formed in a cylindrical or columnar shape having the same diameter as the portion of the tapered portion 1110 adjacent to the center. That is to say, the collecting portion 1120 may be set to have a constant diameter. However, it is not limited thereto, and the collecting portion 1120 may be formed in a generally V shape at the position where the tapered portions 1110 on both sides meet. In other words, in addition to the cylindrical or columnar shape including a section having a constant diameter, the collecting portion 1120 may have a circular shape. In another expression, the collecting portion 1120 may not have a length formed along the longitudinal direction of the drum 1000.

[0113] As described above, even when the cross-section of the drum body 1100 is formed into an ellipse or a polygon instead of a circle, the tapered portion 1110 can be formed to have a cross-section that decreases toward the collection portion 1120.

[0114] The tapered portion 1110 may include a first tapered portion 1111 located on one side of the drum body 1100 and a second tapered portion 1112 located on the other side of the drum body 1100. The first tapered portion 1111 and the second tapered portion 1112 may be symmetrically arranged with respect to each other. The collection portion 1120 may be located between the first tapered portion 1111 and the second tapered portion 1112. The first tapered portion 1111 and the collection portion 1120 may be continuously formed without a step therebetween, and the second tapered portion 1112 and the collection portion 1120 may also be continuously formed without a step therebetween. However, it is not limited thereto, and the collection portion 1120 may be formed to have a step with the first tapered portion 1111 and the second tapered portion 1112. The collection portion 1120 has been described as being provided as a single collection portion between the tapered portions 1110 located on both sides of the collection portion 1120, but it is not limited thereto.

[0115] Since the diameter decreases toward the center, that is, toward the collection portion 1120, the tapered portion 1110 may be formed into a substantially hourglass shape. In the tapered portion 1110, long foreign objects (such as hair) wound around a high-speed rotating body (such as the drum 1000) tend to be drawn into a portion with a small diameter (for example, the collection portion 1120) as they approach the collection portion 1120.

[0116] In the drawings, the diameter of the tapered portion 1110 is illustrated as decreasing linearly, but the circumferential surface of the tapered portion 1110 of the drum body 1100 may be formed as a curved surface.

[0117] That is, the tapered portion 1110 may be arranged such that the rate of decrease in diameter increases as it is directed toward the collection portion 1120. In this case, when the drum 1000 is observed in a direction perpendicular to the axis A of the drum 1000, the upper portion of the tapered portion 1110 may form a substantially U-shaped surface, and the lower portion of the tapered portion 1110 may form a substantially inverted U-shaped surface.

[0118] Conversely, the tapered portion 1110 may be arranged such that the rate of decrease in diameter gradually decreases as it is directed toward the collection portion 1120. In this case, when the drum 1000 is observed in a direction perpendicular to the axis A of the drum 1000, the tapered portion 1110 may have a substantially U-shape that is inclined toward the side.

[0119] As described above, even when the tapered portion 1110 is set to a different shape, the distance from the axis A of the drum 1000 to the end tip of the brush member 1200 or 4200 can be maintained constant.

[0120] With the above-described configuration, since the drum body 1100 has a shape in which the diameter decreases toward the center, foreign matter captured on the drum 1000 can be guided to the central portion. When the drum 1000 has a cylindrical or circular cylindrical shape with a constant diameter, the foreign matter rotates in place, but in the case where the diameter of the drum 1000 decreases toward the central guide, the foreign matter can be moved to the center by the rotational force of the drum 1000, the slope of the drum body 1100, and the suction force directed toward the communication hole 101b positioned corresponding to the center.

[0121] Reference Figure 7 and Figure 8 , the collection portion 1120 of the drum body 1100 can have a cylindrical or circular cylindrical shape with a substantially constant diameter. The collection portion 1120 can be formed as a substantially curved portion and does not have a length in the direction of the axis A of the drum 1000 as described above, but the collection portion 1120 can be formed as a cylindrical or circular cylindrical shape having a predetermined length. Foreign matter captured in the brush 1200 located in the tapered portion 1110 can be guided toward the collection portion 1120. In order for the collection portion 1120 to serve as a space for accommodating foreign matter, the collection portion 1120 can have a predetermined length in the longitudinal direction of the drum 1000. When foreign matter is excessively concentrated in the collection portion 1120, the foreign matter may block the communication hole 101b, and thus the flow rate of the intake air may decrease, resulting in a decrease in the suction force. However, when the length of the collection portion 1120 is too long, the length of the tapered portion 1110 is shortened, and it may become meaningless to move the foreign matter to the collection portion 1120.

[0122] The collection portion 1120 can be located at the center of the drum body 1100 in the direction of the axis A of the drum 1000. In order to guide the foreign matter captured in the brush 1200 to move to the collection portion 1120, a force acting in the direction of the collection portion 1120 may be required.

[0123] A suction force generating device (not shown) located inside the cleaner body 10 can generate a suction force to suck in air and foreign matter on the surface to be cleaned, and the air and foreign matter can travel through the suction port 101a of the suction head 100 and then flow into the communication hole 101b, where the communication hole 101b can be formed in the center of the suction head 100.

[0124] Therefore, in order to cause the suction force to act in the direction of the collection part 1120, the roller 1000 is installed at the center of the suction head 100, that is, approximately at the center of the suction head 100, and thus the collection part 1120 can also be located at the center of the roller body 1100. In other words, since the collection part 1120 is located at the center of the roller body 1100 along the direction of the axis A of the roller 1000, the suction force can act effectively and easily guide the movement of the foreign matter captured in the brush 1200.

[0125] The roller body 1100 can be formed of a metal material or a plastic material. The roller body 1100 can rotate relative to the suction head 100 and can include various materials capable of supporting the brush 1200.

[0126] The roller 1000 can include a brush 1200 configured to sweep foreign matter from the surface to be cleaned. The brush 1200 can include a broom or a brush having a plurality of fibers. The brush 1200 can include a hard fiber material. The brush 1200 can include a silicon material. However, it is not limited thereto, and the brush 1200 can include materials having a plurality of hairs, such as weak fibers, cotton flannel, etc. The brush 1200 can protrude from the roller body 1100. The brush 1200 can protrude in the radial direction of the roller body 1100.

[0127] The brush 1200 can be configured to be rotatable relative to the suction head 100 together with the roller body 1100. The brush 1200 rotates around the axis A to strike the surface to be cleaned to disperse foreign matter and allows the foreign matter to be sucked into the suction head 100 through the suction port 101a. The brush 1200 can be fixed in a manner coupled to a coupling part 1130 described below, but is not limited thereto, and the brush 1200 can directly protrude from the roller body 1100 and be fixed to the roller body 1100.

[0128] Reference Figure 6 , the brush 1200 can include a brush belt 1210 and a plurality of brush fibers 1220 coupled to the brush belt 1210. The brush belt 1210 and the plurality of brush fibers 1220 can cooperate with each other to form the brush 1200 as a unit. The brush 1200 can be manufactured by bonding or coupling the plurality of brush fibers 1220 to the brush belt 1210.

[0129] The drum body 1100 may include a coupling portion 1130 that extends along the longitudinal direction of the drum body 1100 and protrudes from the outer circumferential surface of the drum body 1100 such that the brush 1200 is coupled to the drum body 1100. The coupling portion 1130 may be provided as at least one unit. The coupling portion 1130 may be provided as a plurality of units. The coupling portion 1130 may include a first coupling portion 1131 coupled to the first brush member 1200a or 4200a and a second coupling portion 1132 coupled to the second brush member 1200b or 4200b. The first coupling portion 1131 and the second coupling portion 1132 may be spaced apart from each other along the circumferential direction of the drum body 1100. In the drawings, the first coupling portion 1131 and the second coupling portion 1132 are shown positioned in opposite directions, i.e., at an interval of 180 degrees, but are not limited thereto. For example, the first coupling portion 1131 and the second coupling portion 1132 may be arranged within a certain angle, or may be provided as one or three or more.

[0130] Since the brush member 1200 or 4200 is detachably coupled to the coupling portion 1130, the brush member 1200 or 4200 can be coupled and used as needed even when the brush member 1200 or 4200 is formed as an elastic blade or a hard fiber brush. In addition, since the brush 1200 is coupled to the coupling portion 1130, even when a long foreign object (such as hair) is caught between the fibers of the brush 1200, due to the height of the coupling portion 1130, it is possible to prevent the foreign object from coming into complete close contact with the drum body 1100.

[0131] Therefore, when the user desires to remove the foreign object wound around the brush 1200, it is possible to easily remove the foreign object in the case where there is a gap formed by the coupling portion 1130 between the tapered portion 1110 and the collecting portion 1120 as compared with the case where the foreign object is in complete close contact with the drum body 1100.

[0132] The coupling portion 1130 may protrude from the tapered portion 1110 and the collecting portion 1120 of the drum body 1100. The coupling portion 1130 may be formed to be inclined in a second direction R' opposite to the first direction R while extending from both ends toward the collecting portion 1120 in the direction of the axis A of the drum body 1100. That is, when viewed in a direction perpendicular to the axis A of the drum 1000, the coupling portion 1130 may be provided to form a substantially V-shaped configuration.

[0133] In the case where the brush 1200 projects directly from the drum body 1100, even when the brush 1200 connected to the connection portion 1130 is formed in a straight line rather than a substantially V-shaped shape, the brush 1200 can be connected to match the shape of the connection portion 1130, thereby easily forming a V-shaped shape.

[0134] The connection portion 1130 may include a connection portion slot 1130a into which the brush 1200 can be installed. The connection portion slot 1130a may be configured to allow the brush belt 1210 to be connected in a slidable manner. By cutting at least a portion of the connection portion 1130, the connection portion slot 1130a can be formed inside the connection portion 1130. The height of the connection portion 1130 may increase as it is directed from both ends toward the collection portion 1120 in the axial direction A of the drum 1000.

[0135] Due to the characteristics of the drum 1000 as a high-speed rotating body, the connection strength between the drum body 1100 and the brush member 1200 or 4200 may be important in terms of the durability of the drum 1000. When the brush member 1200 or 4200 is connected to the connection portion slot 1130a in a sliding fit form, the strength and durability can be improved compared to when attached with an adhesive or the like, resulting in an increase in the lifespan of the product.

[0136] As described above, since the height of the connection portion 1130 increases in the direction toward the collection portion 1120, even when the height of the brush 1200 connected to the connection portion 1130 is constant, the distance from the axis A of the drum 1000 to the end tip of the brush 1200 can be maintained constant across the tapered portion 1110 and the collection portion 1120. Since there is no need for a process of separately adjusting the length of the brush 1200, the production efficiency of the brush 1200 and the manufacturing efficiency of the drum 1000 can be improved.

[0137] The brush 1200 may extend along the length direction of the drum body 1100. The brush 1200 may extend from one end of the drum body 1100 to the other end. The brush 1200 may be configured to cover at least a portion of the drum body 1100 in the length direction. The brush 1200 may be exposed to the surface to be cleaned through the suction port 101a of the suction head 100. Since the brush 1200 extends along the length direction of the drum body 1100, the contact area between the brush 1200 and the surface to be cleaned can be made substantially similar to the area of the suction port 101a, and the cleaning area of the region passed by the suction head 100 can be increased, thereby improving the cleaning efficiency.

[0138] Reference Figure 10, the brush 1200 can be positioned to maintain a constant distance l from the axis A of the drum 1000. The brush 1200 can be arranged to contact the surface to be cleaned with a uniform length, so that foreign matters on the surface to be cleaned can be evenly dispersed and sucked in. Since this also applies even when the drum body 1100 is not arranged in the shape of a cylinder or a cylindrical shape with a constant diameter, the brush 1200 can be maintained constant across the tapered portion 1110 and the collecting portion 1120, the diameter of the tapered portion 1110 decreases as it is guided towards the center, and the collecting portion 1120 has a relatively small diameter. Therefore, the brush 1200 protruding from the tapered portion 1110 can be provided with a length that increases as it is guided towards the collecting portion 1120, and the brush 1200 protruding from the collecting portion 1120 can be provided with a constant length corresponding to the highest fibers of the brush 1200 protruding from the tapered portion 1110.

[0139] In other words, the height of the brush 1200 protruding from the drum body 1100 can increase as it is guided towards the collecting portion 1120 of the drum body 1100 along the direction of the axis A of the drum 1000. As the length of the brush 1200 increases in the direction from the tapered portion 1110 towards the collecting portion 1120, the distance from the axis A of the drum 1000 to the end tip of the brush 1200 can be maintained constant.

[0140] The brush 1200 can be formed to be inclined in a second direction R' opposite to the first direction R while extending from both ends of the drum body 1100 towards the center in the direction of the axis A. That is to say, the brush 1200 can be formed to be inclined in the second direction R' while extending from both ends of the drum body 1100 towards the collecting portion 1120 in the direction of the axis A. In other words, when observed in a direction perpendicular to the axis A of the drum 1000, the brush 1200 can be extended to have a substantially V-shaped shape and can be bilaterally symmetric.

[0141] With such a shape, when the drum 1000 rotates, the brush member 1200 can guide the air flow and foreign matters introduced from the suction port 101a towards the center of the drum 1000.

[0142] Each brush 1200 can be formed to integrally extend from one end of the drum 1000 towards the other end. As described above, even when the brush 1200 is arranged to have an overall "V" shape, the brush 1200 can be integrally formed without being separated relative to the center of the drum 1000. However, it is not limited thereto, and the brush 1200 can be manufactured by separately manufacturing both sides of the brush 1200 relative to the central portion of the drum brush 1000 and then connecting the two sides.

[0143] The brush 1200 can be set into multiple units. The multiple brushes 1200 can be positioned such that the brushes 1200 of each unit extending from one end to the other end of the drum body 1100 are spaced apart from each other in the circumferential direction of the drum body 1100. By arranging the multiple brushes 1200, the effect of dispersing and sucking in foreign matters on the surface to be cleaned can be improved. In the drawings, the brushes 1200 can be illustrated as two brushes 1200 positioned in opposite directions, but are not limited thereto, and the brushes 1200 can be provided as more than two brushes.

[0144] Hereinafter, with reference to Figure 9 and Figure 10 the process of moving the foreign matters captured in the brush 1200 to the collection part 1120 will be described in detail.

[0145] With reference to Figure 9 and Figure 10 , the drum 1000 can be installed inside the suction head 100. The cleaner 1 can suck in air and foreign matters through the suction port 101a of the suction head 100. When the cleaner 1 is used in a cleaning environment where foreign matters are firmly attached to the cleaning surface (e.g., carpet), a brush material with low rigidity may have low cleaning efficiency. This is because a brush material with low rigidity cannot exert an influence large enough to interfere with the foreign matters between the cleaning surfaces. In this case, when using the brush 1200 including high-rigidity bristles, sufficient cleaning efficiency can be obtained.

[0146] However, in the case where the brush 1200 is formed of a high-rigidity bristle material, once long foreign matters (such as hair) are wound around the brush 1200, it may be difficult for them to escape. Therefore, even if the force applied by the drum body 1100 in the shape of an hourglass is to move the foreign matters to the collection part 1120, it may not be easy to move the foreign matters to the collection part 1120.

[0147] With reference to Figure 9 a in Figure 9 and Figure 9 b in Figure 5 a in Figure 9 is a view of the drum 1000 shown in Figure 5 when observed in the direction D, and

[0148] b in Figure 5 is a view of the drum 1000 shown in

[0148] when cut along the line X-X'. The brush 1200 can be formed to be inclined in a second direction R' opposite to the first direction R while extending toward the radially outer side of the drum body 1100. The brush 1200 can be formed to be inclined in a second direction R' opposite to the first direction R. The brush 1200 can form an acute angle θ with the drum body 1100 in the second direction R' while extending.

[0148] When the brush 1200 is formed of a hard fiber material, long foreign objects such as hair are easily trapped in the brush. Since the brush formed of a hard fiber material has a great rigidity, it may be difficult to remove the foreign objects trapped between the bristles. Since the brush 1200 is formed to be inclined in a second direction R opposite to the first direction R, where the first direction R is the rotation direction of the drum 1000, during the rotation of the drum 1000, the brush 1200 can first contact the surface to be cleaned from the end tip. In addition, during the rotation of the drum 1000, the brush 1200 can contact the surface to be cleaned as if sweeping the surface to be cleaned, and the spacing between the fibers constituting the brush 1200 can be widened.

[0149] When the brush 1200 is formed to be inclined in the same direction as the rotation direction R of the drum 1000, the brush 1200 can contact the surface to be cleaned like stamping, and each fiber of the brush 1200 can be bent contrary to the above situation, making it difficult for foreign objects to escape.

[0150] In this case, since the end tip of the brush 1200 formed of a hard fiber material first contacts the surface to be cleaned, the brush can be bent in a direction opposite to the rotation direction of the drum 1000, and the foreign objects trapped between the hard fibers of the brush 1200 can escape relatively easily. Due to the shape and rotational force of the drum body 1100 and the suction force acting near the collection part 1120, the escaped foreign objects can easily move toward the collection part 1120 located at the center of the drum body 1100.

[0151] In addition, in the case where the brush 1200 extends from both ends of the drum body 1100 toward the collection part 1120 in the direction of the axis A and is formed to be inclined in the second direction R', the brush 1200 positioned at both ends in the direction of the axis A can first contact the surface to be cleaned. In other words, the brush 1200 on the tapered part 1110 can first contact the surface to be cleaned, and the brush 1200 on the collection part 1120 can contact the surface to be cleaned later.

[0152] Therefore, since the brush 1200 on the relatively outer side can first be bent in a direction opposite to the rotation direction, and the brush 1200 on the relatively inner side maintains its original state, the spacing between the hard fibers can be widened. The widened hard fibers make it easier for the foreign objects trapped between the bristles to escape. Due to the shape and rotational force of the drum body 1100 and the suction force acting near the collection part 1120, the escaped foreign objects can easily move toward the collection part 1120 located at the center of the drum body 1100.

[0153] With this configuration, as Figure 10As shown, foreign matter wrapped around the brush 1200 protruding from the tapered portion 1110 can be more easily moved to the collection portion 1120.

[0154] Hereinafter, various embodiments of the present disclosure will be described. The same reference numerals are assigned to the same components as those of the above-described embodiments, and the detailed description may be omitted.

[0155] Figure 11 is a perspective view of a drum having a partition portion for partitioning a collection portion provided at a central portion of the drum according to an embodiment. Figure 12 is illustrated in Figure 11 a view of the drum shown when viewed in one direction. Figure 13 is illustrated Figure 12 an enlarged view of the central portion of the drum of

[0156] Referring to Figures 11 to 13 , when the collection portion 2120 is formed into two or more collection portions 2120, the collection portions 2120 may be formed symmetrically with respect to the center. Even when the collection portion 2120 is formed into two or more collection portions, it is desirable that the collection portion 2120 be positioned close to the communication hole 101b. When the collection portion 2120 is provided as two or more collection portions 2120, a section may be provided in which the diameter increases in the direction from the collection portion 2120 toward the center of the drum body 1100. That is, a drum formed such that the diameter decreases from the tapered portions 1111 and 1112 toward the collection portion 1120 may increase again from the collection portion 2120 toward the center of the drum body 1100. When the drum body 1100 is viewed from a direction perpendicular to the axis A of the drum 1000, the drum body 1100 may have a substantially W-shaped configuration.

[0157] As described above, the drum 2000 may include a partition portion 2100 formed in the collection portion 2120 of the drum body 2100. The partition portion 2100 may be formed in the circumferential direction at the center of the drum body 1100 in the direction along the axis A of the drum 2000. The partition portion 2100 may have a substantially triangular shape. However, it is not limited thereto, and the partition portion 2100 may have a substantially quadrilateral or semicircular shape, or may be formed as a rib.

[0158] The partition portion 2100 may divide the collection portion 2120 into a first collection portion 2121 and a second collection portion 2122. That is, the collection portion 2120 may include the first collection portion 2121 and the second collection portion 2122. The first collection portion 2121 may collect foreign matter moving from the first tapered portion 1111. Similarly, the second collection portion 2122 may collect foreign matter moving from the second tapered portion 1112.

[0159] The first collection part 2121 and the second collection part 2122 may be formed symmetrically so that the same suction force is applied. Since the first collection part 2121 and the second collection part 2122 are formed symmetrically, the suction force directed toward the communication hole 101b can act equally on the first collection part 2121 and the second collection part 2122. The first collection part 2121 and the second collection part 2122 may be positioned adjacent to the communication hole 101b so that foreign matters are effectively collected.

[0160] As shown in the figure, at least a part of the first collection part 2121 and the second collection part 2122 may include a section having a constant diameter along the length direction of the drum 2000. However, the present disclosure is not limited thereto, and each of the first collection part 2121 and the second collection part 2122 may be formed in a substantially V-shaped configuration. In this case, the partition part 2100 may have a width corresponding to the length of the collection part 2120 of the drum 2000 in the length direction.

[0161] Since the collection part 2120 is divided into the first collection part 2121 and the second collection part 2122, the section where the movement of foreign matters stagnates can be reduced. Foreign matters are more likely to move to a place with a small diameter in a high-speed rotating body (such as the drum 2000 according to the present disclosure). Therefore, once the foreign matters have traveled through the tapered parts 1111 and 1112 and entered the collection part 2120 with a constant diameter, the foreign matters are placed in the section with a constant diameter, and thus the force causing the movement toward the center of the drum 2000 is reduced.

[0162] Therefore, since it is difficult to reach the center of the drum 2000, the foreign matters are collected in the first collection part 2121 and the second collection part 2122, which are the parts of the collection part 2120 adjacent to the tapered parts 1111 and 1112. In addition, the partition part 2100 can further narrow the flow path of the air moving from the suction port 101a through the communication hole 101b, which results in an increase in the suction force, and thus an increase in the force applied to move the foreign matters to the first collection part 2121 and the second collection part 2122 of the drum 2000.

[0163] Figure 14 is a view showing a drum including ribs protruding in the radial direction of the drum according to an embodiment. Figure 15 a in is a view showing one side of the drum shown in Figure 14 and Figure 15 b in is Figure 14 a view taken along line Y - Y' of the drum shown in.

[0164] Reference Figure 14 and Figure 15 Figure 15 , the drum body 1100 may include ribs 1300 formed between a plurality of brushes 1200 and protruding from the outer circumference of the drum body toward the surface in the radial direction of the drum body 1100. The ribs 1300 may extend from one end of the drum body 1100 to the other end in the direction of the axis A of the drum 1000. In the drawings, the ribs 1300 are illustrated as extending in a straight line, but are not limited thereto, and the ribs 1300 may extend in a shape corresponding to the above-described coupling portion 1130. For example, the ribs 1300 may be formed in a substantially V-shaped shape. The ribs 1300 may be formed of the same material as the drum body 1100. For example, the ribs 1300 may be formed by plastic injection molding.

[0165] Reference Figure 15 a in Figure 15 b in, the ribs 1300 may be formed to have a height from the axis A to the end tip of the ribs 1300, and the height of the ribs 1300 increases as it is guided from the collecting portion 1120 of the drum body 1100 toward both ends in the direction of the axis A of the drum 1000. In Figure 15 a on one side of the illustrated drum 1000, the protruding length of the ribs 1300 may be formed to be longer than that of the ribs 1300 in Figure 15 b of the cross-section taken along the line Y - Y' passing through the collecting portion 1120 of the drum 1000. That is, the ribs 1300 protruding from the tapered portion 1110 of the drum body 1100 may protrude at a greater height than the height of the ribs 1300 protruding from the collecting portion 1120. In other words, the ribs 1300 may be formed to correspond to the circumferential shape of the drum body 1100.

[0166] The ribs 1300 may include tapered ribs 1310 protruding from the tapered portion 1100 and collecting ribs 1320 protruding from the collecting portion 1120. The height (i.e., the protruding length) of the tapered ribs 1310 may decrease in the direction toward the collecting ribs 1320 along the axis A of the drum 3000. As the drum 3000 rotates at high speed, the tapered ribs 1310 may perform a function similar to that of a cylindrical or circular shape. In other words, the tapered ribs 1310 may guide foreign matter wound around the drum 3000 to the collecting ribs 1320, similar to the above-described tapered portion 1110.

[0167] The tapered rib 1310 may include a first tapered rib 1311 protruding from the first tapered portion 1111 and a second tapered rib 1312 protruding from the second tapered portion 1112. The first tapered rib 1311 and the second tapered rib 1312 may be symmetrically formed around the collecting rib 1320.

[0168] The collecting rib 1320 may be formed between the first tapered rib 1311 and the second tapered rib 1312. The collecting rib 1320 may be formed to have a predetermined length. The height (i.e., the protruding length) of the collecting rib 1320 may be formed at a constant level. As shown in the figure, the collecting rib 1320 may be continuously formed from the first tapered rib 1311 and the second tapered rib 1312 without steps. However, it is not limited thereto, and the collecting rib 1320 may be formed to have a protruding length smaller than the minimum protruding lengths of the first tapered rib 1311 and the second tapered rib 1312.

[0169] The collecting rib 1320 may include a collecting groove (not shown) formed by cutting a part of the collecting rib 1320. The collecting groove (not shown) may be formed such that the protruding length decreases toward the center. That is, the collecting groove (not shown) may have a substantially V-shaped shape. However, it is not limited thereto, and the collecting groove may have a substantially U-shaped shape.

[0170] The collecting groove (not shown) may be formed as at least one unit. When the collecting groove (not shown) is formed as a plurality, the collecting grooves may be positioned adjacent to the communication hole 101b. In addition, the collecting grooves (not shown) may be symmetrically formed with respect to the center.

[0171] Reference Figure 15 to a in, foreign matter may be captured on the upper side of the tapered rib 1311 while being captured between the brushes 1200a and 1200b. When foreign matter is captured on the upper side of the tapered rib 1311 protruding from the tapered portion 1111, a gap may be formed between the foreign matter and at least a part of the tapered portion 1111. Since the foreign matter does not contact all circumferential regions of the tapered portion 1111, the foreign matter may be subject to a smaller frictional force and thus may move more easily to the collecting portion 1120. In addition, due to the tapered rib 1311 formed on the tapered portion 1111, the foreign matter may be captured on the brush 1200 at a relatively shallow depth. As the brush 1200 is captured deeper, due to the rigidity of the brush 1200, the foreign matter captured in the brush 1200 is difficult to escape, but when the brush 1200 is deformed, the foreign matter captured relatively shallowly may escape relatively easily.

[0172] Similarly, reference Figure 15In the case of b, foreign matter may be trapped on the upper side of the collecting ribs 1320 and at the same time be trapped between the brushes 1200a and 1200b. When the foreign matter is trapped on the upper side of the collecting ribs 1320 protruding from the collecting portion 1120, a gap can thus be formed between the foreign matter and at least a part of the collecting portion 1120.

[0173] The user can relatively easily remove foreign matter that has not yet moved from the tapered portion 1111 to the collecting portion 1120. In addition, the user can cut or pull the foreign matter that has moved to the collecting portion 1120 through the gap between the collecting portion 1120 and the foreign matter, and thus the foreign matter can be relatively easily removed.

[0174] The ribs 1300 can be formed at a height lower than the height of the brushes 1200. The ribs 1300 can be formed to have a length shorter than the length of the brushes 1200 in the radial direction of the drum body 1100. Specifically, the ribs 1300 can be formed such that the length of the drum body 1100 in the radial direction is shorter than the length of the brushes 1200.

[0175] However, this does not mean that all the brushes 1200 protrude more than the ribs 1300 in the radial direction of the drum body 1100. For example, compared with the distance of the brushes 1200 protruding from the collecting portion 1120, the ribs 1300 protruding from the tapered portion 1110 of the drum body 1100 can be formed to have a greater distance from the axis A of the drum 1000, but the above description of the length of the ribs 1300 and the length of the brushes 1200 corresponds to the case when comparing the length of the ribs 1300 and the length of the brushes 1200 formed at the same position in the length direction of the drum body 1100.

[0176] That is, when comparing the ribs 1300 and the brushes 1200 formed at the same position in the length direction of the drum body 1100, the ribs 1300 can be formed to protrude less than the brushes 1200 in the radial direction of the drum body 1100.

[0177] With this configuration, when the drum brush 1000 contacts the surface to be cleaned, the brushes 1200 can contact the surface to be cleaned before the ribs 1300, which prevents damage to the ribs 1300 or the surface to be cleaned due to the collision between the ribs 1300 and the surface to be cleaned. However, in order for the ribs 1300 to perform their function, it is desirable that even when the ribs 1300 have a shorter length than the brushes 1200, the ribs 1300 at least have a length similar to that of the brushes 1200. However, the length relationship between the ribs 1300 and the brushes 1200 is not limited to this.

[0178] In addition, as the slope of the rib 1300 increases to the slope of the tapered portion 1110 of the drum body 1100, the slope of the tapered portion 1110 can become even steeper. That is, the effect of reducing the diameter can be further increased, and the movement of foreign objects can be further promoted.

[0179] In addition, when the rib 1300 is formed on the drum body 1100 having a cylindrical or cylindrical shape with a constant diameter, an effect of providing a shape in which the diameter decreases in the direction toward the center (for example, in the tapered portion 1110) can be provided. That is, even when the drum body 1100 does not have a substantially hourglass shape, the rib 1300 can provide an appearance similar to that of the drum body 1100 including the tapered portion 1110 with a reduced diameter, and can guide foreign objects to the center. The rib 1300 protruding from the drum body 1100 is merely an example for describing the concept of the present disclosure, and the rib 1300 can be formed in other ways, such as being attached to the drum body 1100.

[0180] Figure 16 is a view showing a drum in which a brush member is provided as a blade according to an embodiment.

[0181] Reference Figure 16 , the drum 4000 may include a brush member 4200 provided as a blade 4200 instead of the brush 1200. The blades 4200 may be provided in a plurality. The blades 4200 may include a first blade 4200a and a second blade 4200b. The first blade 4200a and the second blade 4200b may protrude from the drum body 1100. The first blade 4200a and the second blade 4200b may be spaced apart from each other in the circumferential direction of the drum body 1100. As shown, the first blade 4200a and the second blade 4200b may be positioned at an angle of 180 degrees with respect to each other. However, the blades 4200 are not limited thereto, and may be provided as one blade or three or more blades. Even when three or more blades 4200 are provided, the blades 4200 may not always be positioned at regular intervals, and the blades 4200 may be arranged only within a certain angle in the circumferential direction of the drum body 1100.

[0182] The blade 4200 may include an elastic material. The blade 4200 may have a predetermined stiffness. For example, the blade 4200 may include a rubber material. The blade 4200 can be struck to sufficiently disperse foreign objects in a cleaning environment (for example, a carpet) where foreign objects are firmly attached to the cleaning surface. Therefore, even in the case of repeated striking, the blade 4200 needs to have the ability of elastic recovery while having sufficient stiffness to strongly impact the cleaning surface.

[0183] Due to the characteristics of the drum 4000 as a high-speed rotating body, the blade 4200 formed of a rigid body without elasticity may be at risk of damage due to strong and very frequent impacts with the cleaning surface. Therefore, the blade 4200 can be formed of a material that can elastically deform even when repeatedly hitting the surface to be cleaned.

[0184] The blade 4200 can have a higher stiffness than the brush 1200. However, since the blade 420 is not formed by aggregating multiple fibers, long foreign objects (such as hair) may not be wound around the blade 420 as frequently. However, the blade 4200 can include an elastic material such as rubber. Therefore, during the rotation of the blade 4200 including rubber, long foreign objects (such as hair) may not move easily. In addition, when foreign objects are difficult to move, the foreign objects may easily become entangled with each other, making it even more difficult for the foreign objects to move. Also, since the suction port 101a is blocked, the cleaning efficiency may decrease, or in severe cases, a malfunction may occur.

[0185] Similar to the brush 1200, the blade 4200 can be coupled to a coupling portion 1130 provided on the drum body 1100.

[0186] As described above, even when the brush member 1200 or 4200 is set as the blade 4200 instead of the brush 1200, it is necessary to facilitate the movement of foreign objects.

[0187] Therefore, the blade 4200 can be constructed in a manner similar to the above-described brush 1200. The blade 4200 can be positioned such that the end tip maintains a constant distance from the axis A of the drum 4000. The blade 4200 can be configured to contact the surface to be cleaned with a uniform length in order to evenly disperse and suck in foreign objects from the surface to be cleaned.

[0188] Similar to the above-described brush 1200, the blade 4200 can be formed to be inclined in a direction R' opposite to the rotation direction R of the drum 4000. When the blade 4200 is inclined in the same direction as the rotation direction R of the drum 4000, the blade 4200 may bend in a direction opposite to the rotation direction R of the drum 4000. Since the drum 4000 rotates at a high speed, the blade 4200 may be easily damaged, and the motor 171 of the suction head 100 may also be damaged. As described above, since the drum 4000 cannot rotate normally, the attached foreign objects may be difficult to move toward the collection portion 1120.

[0189] In addition, when the blade 4200 extends from both ends of the drum body 1100 toward the collection part 1120 in the direction of the axis A while being inclined in the second direction R', the blades 4200 at both ends in the direction of the axis A can first contact the surface to be cleaned. In other words, the blade 4200 at the position of the tapered part 1110 can first contact the surface to be cleaned, and the blade 4200 at the position of the collection part 1120 contacts the surface to be cleaned later.

[0190] In the case where the blade 4200 is formed of an elastic material, since the blade 4200 on the outer side deforms first and the blade 4200 on the inner side maintains its original state, the same local deformation as that described above for the brush 1200 can occur. Therefore, foreign matter attached to the drum 4000 including the blade 4200 can be moved to the collection part 1120 relatively easily.

[0191] Figure 17 is a view showing a drum including a partition part that partitions a collection part at the central part of the drum according to an embodiment. Figure 16 of the drum.

[0192] Refer to Figure 17 , the drum 5000 can include blades 4200 protruding from the drum body 1100 and a partition part 2100 formed in the collection part 1120 of the drum body 1100.

[0193] Since foreign matter is more easily moved in the case of including the blade 4200 than in the case of including the above-mentioned brush 1200, a larger amount of foreign matter can be conveyed from the tapered parts 1110. Therefore, in the case where the drum 5000 includes the blade 4200, the partition part 2100 can be provided.

[0194] As described above, the partition part 2100 can effectively form a space for accommodating foreign matter. Due to the partition part 2100, the air flow moving through the communication hole 101b from the suction port 101a becomes narrower, resulting in an increase in the suction force and also an increase in the force applied to move the foreign matter toward the first collection part 2121 and the second collection part 2122 of the drum 2000.

[0195] Since foreign matter is more easily moved in the case where the drum 5000 includes the blade 4200, a larger amount of foreign matter is conveyed from the tapered parts 1111 and 1112. Therefore, in this case, the drum 5000 including the blade 4200 can also include the partition part 2100, making it more effective.

[0196] Although the present disclosure has been shown and described with reference to various embodiments thereof, those skilled in the art will understand that various changes may be made in form and detail without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents.

Claims

1. A cleaner, comprising: a cleaner main body; and a roller that is capable of rotating about a longitudinal axis of the roller in a first direction, the roller including a roller main body and a brush member, wherein the roller main body includes: a first tapered portion having a diameter that decreases along the longitudinal axis of the roller from a first end of the roller main body; a second tapered portion having a diameter that decreases along the longitudinal axis of the roller from a second end of the roller main body; and a collection portion located at a position where the diameters of the first tapered portion and the second tapered portion are the smallest; and the brush member extends between the first end and the second end of the roller main body and protrudes outward from the roller main body, wherein the roller is configured such that: a distance from the longitudinal axis of the roller to an end tip of the brush member is maintained across the first tapered portion, the collection portion, and the second tapered portion, and rotation of the roller guides inhaled foreign matter into the cleaner main body and guides foreign matter wound around the roller toward the collection portion.

2. The cleaner according to claim 1, wherein the brush member is formed obliquely between the first end and the second end of the roller main body in a second direction opposite to the first direction.

3. The cleaner according to claim 1, wherein the brush member extends obliquely from the first end of the roller main body to the collection portion in a second direction opposite to the first direction, and extends obliquely from the second end of the roller main body to the collection portion in the second direction.

4. The cleaner according to claim 1, wherein the roller main body includes a coupling portion, the coupling portion protrudes from the first tapered portion, the collection portion, and the second tapered portion, and the brush member can be coupled to the coupling portion.

5. The cleaner according to claim 4, wherein the coupling portion is formed to have a height that increases in a direction from the first end of the roller main body toward the collection portion and increases in a direction from the second end of the roller main body toward the collection portion.

6. The cleaner according to claim 4, wherein the coupling portion extends obliquely from the first end of the roller main body to the collection portion in a second direction opposite to the first direction, and extends obliquely from the second end of the roller main body to the collection portion in the second direction.

7. The cleaner according to claim 1, wherein the collection portion is positioned at a center of the roller main body along the longitudinal axis of the roller and has a constant diameter.

8. The cleaner according to claim 7, wherein the roller main body includes a partition portion, the partition portion is located at a longitudinal center of the roller main body and protrudes outward along a circumferential direction of the roller main body, and The separating portion divides the collecting portion into a first collecting portion and a second collecting portion.

9. The cleaner according to claim 8, wherein, the first collecting portion and the second collecting portion are symmetrically formed with respect to the separating portion, and the first collecting portion and the second collecting portion have a constant diameter.

10. The cleaner according to claim 1, wherein, the brush member includes a plurality of brush members, and the plurality of brush members are spaced apart from each other along the circumferential direction of the drum body.

11. The cleaner according to claim 10, wherein, the drum includes: ribs that project radially from the drum body along the outer circumferential surface of the drum body between respective ones of the plurality of brush members.

12. The cleaner according to claim 11, wherein, the ribs are formed such that the height from the longitudinal axis of the drum to the end tip of the ribs increases from the collecting portion towards the first end of the drum body and increases from the collecting portion towards the second end of the drum body.

13. The cleaner according to claim 1, wherein, the brush member includes a brush or a blade.

14. The cleaner according to claim 13, wherein, the blade includes an elastic material.

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