Vacuum cleaner

Abstract

A vacuum cleaner is disclosed. The vacuum cleaner includes a cleaner body configured to generate suction force, and a suction cleaner including a head having a suction inlet for suction cleaning by the suction force, and a brush cylinder rotatably disposed in the suction inlet to sweep dust on a floor. The brush cylinder includes a convex portion protruding from an outer circumferential surface of the brush cylinder and spirally extending in a direction of an axis of rotation of the brush cylinder.

Description

Technical Field

[0001] This disclosure relates to a vacuum cleaner, and more specifically, to an improvement in the brush rollers used in the vacuum cleaner. Background Technology

[0002] A stick vacuum cleaner includes a cleaner body, a suction unit, and a stick. The cleaner body generates suction; the suction unit removes dust or dirt from a cleaning surface such as a carpet; the stick has a connecting rod with channels through which the dust or dirt sucked up by the suction unit is conveyed. The stick may have a top connected to the cleaner body and a bottom connected to the suction unit. The cleaner body includes a dust container to hold the dust or dirt that has been sucked up by the stick. The suction unit includes a rotating brush roller.

[0003] A brush roller comprises a cylindrical roller and a brush with multiple bristles surrounding the outer circumferential surface of the roller. In the aforementioned conventional vacuum cleaner, during the cleaning process, the brush is in close contact with the cleaning surface along the axis of rotation, thus increasing the friction between the brush roller and the cleaning surface, resulting in a significant increase in noise and power consumption due to the increased rotational load on the roller. Summary of the Invention

[0004] Technical issues

[0005] To address the problems of the prior art, a vacuum cleaner is provided that can generate less noise by reducing the friction between the roller and the cleaning surface, and can reduce power consumption by reducing the rotational load on the roller.

[0006] In addition, a vacuum cleaner that can effectively suck up dust from corners is provided.

[0007] Technical solution

[0008] Therefore, one aspect of one or more embodiments may provide a vacuum cleaner. The vacuum cleaner includes: a cleaner body configured to generate suction; and a suction unit including a head and a brush roller, the head having a suction port to draw in dust by suction, and the brush roller rotatably disposed in the suction port to sweep dust from the floor. The brush roller includes a convex portion protruding from the outer peripheral surface of the brush roller and extending helically along the direction of the brush roller's axis of rotation.

[0009] The brush roller may include: a roller body having a convex portion formed on the outer peripheral surface of the brush roller; and a cleaning member including a base surrounding the roller body and a plurality of bristles supported by the base.

[0010] The brush roller may include: a cylindrical roller body; and a cleaning component including a base surrounding the roller body and having a convex portion and a plurality of bristles disposed on the base.

[0011] A brush roller may include multiple convex portions.

[0012] Each convex portion can be configured to rotate around the axis of rotation of the brush roller and can include at least one contact point to the floor cleaning surface.

[0013] The convex portion can be configured to have a predetermined radius of curvature in the circumferential direction of the brush roller.

[0014] An arched section with a lower height than the convex section can be set between the convex sections.

[0015] The arched portion may include the same radius of curvature as the center of rotation.

[0016] The suction device may include a housing that partially surrounds the brush roller.

[0017] The housing can be configured to surround the brush roller on the opposite side of the floor and extend at the front of the suction device, and the extended front end of the housing can be configured to be higher than or above the brush roller in the front direction.

[0018] Multiple bristles can have the same height.

[0019] Multiple bristles may include the same one or two or more materials.

[0020] Multiple bristles may include at least one of nylon filaments, silver filaments, or carbon filaments.

[0021] A brush roller may include: a cylindrical roller body; and an elastic member supported by the outer peripheral surface of the roller body and comprising a material softer than the roller body.

[0022] The roller body may include at least one groove, a convex portion located at the bottom of at least one groove, and an elastic member that can be inserted into and connected to the groove.

[0023] The elastic component may include a material that is more elastic than the roller body.

[0024] The roller body may include a convex portion, and the elastic member may have a uniform thickness.

[0025] The elastic member may include a convex portion.

[0026] A resilient member may consist of a single member.

[0027] An elastic member may include multiple members.

[0028] Beneficial effects

[0029] As described above, the vacuum cleaner according to this disclosure can generate less noise and consume less power due to the reduced friction between the cleaning surface and the roller and the reduced rotational load on the roller.

[0030] Furthermore, the vacuum cleaner according to this disclosure allows the front end of the housing surrounding the brush roller to be as high as or higher than the outer surface of the brush roller in the vertical direction, so as to prevent vertical airflow when cleaning corners, thereby more effectively sucking dust from corners. Attached Figure Description

[0031] Figure 1 This is a perspective view of a vacuum cleaner according to a first embodiment of the present disclosure.

[0032] Figure 2 yes Figure 1 A three-dimensional view of the suction unit in the image.

[0033] Figure 3 It is shown Figure 2 The image shows a three-dimensional view of the suction unit, with the top cover already separated from the suction unit.

[0034] Figure 4 yes Figure 2 An exploded 3D view of the suction unit in the image.

[0035] Figure 5 It is along Figure 2 The sectional view taken by line AA in the figure.

[0036] Figure 6 It is along Figure 2 The sectional view taken from line BB in the middle.

[0037] Figure 7 yes Figure 6 An exploded 3D view of the brush roller.

[0038] Figure 8 It is along Figure 4 The sectional view is taken by line CC.

[0039] Figure 9 yes Figure 7 A three-dimensional view of the main body of the roller.

[0040] Figure 10 It is along Figure 9 The sectional view taken by line DD in the middle.

[0041] Figure 11 The brush roller of a vacuum cleaner in contact with a floor cleaning surface is shown according to a first embodiment of the present disclosure.

[0042] Figure 12A brush roller of a vacuum cleaner in contact with a corner cleaning surface is shown according to a first embodiment of the present disclosure.

[0043] Figure 13 This is a cross-sectional view of a brush roller according to a second embodiment of the present disclosure.

[0044] Figure 14 yes Figure 13 An exploded 3D view of the brush roller.

[0045] Figure 15 This is a cross-sectional view of a brush roller according to a third embodiment of the present disclosure.

[0046] Figure 16 yes Figure 15 A three-dimensional view of the roller body and elastic components.

[0047] Figure 17 This is a cross-sectional view of a brush roller according to a fourth embodiment of the present disclosure.

[0048] Figure 18 This is a cross-sectional view of a brush roller according to a fifth embodiment of the present disclosure.

[0049] Figure 19 yes Figure 18 A three-dimensional view of the roller body and elastic components.

[0050] Figure 20 This is a cross-sectional view of a brush roller according to a sixth embodiment of the present disclosure.

[0051] Figure 21 yes Figure 20 A three-dimensional view of the roller body and elastic components.

[0052] Figure 22 This is a cross-sectional view of a brush roller according to the seventh embodiment of the present disclosure.

[0053] Figure 23 yes Figure 22 A three-dimensional view of the roller body and elastic components. Detailed Implementation

[0054] Embodiments of the vacuum cleaner 1 will now be described in detail with reference to the accompanying drawings to facilitate implementation by those skilled in the art. The embodiments are described as being applied to a rod-type vacuum cleaner to aid understanding of this disclosure, but are not limited thereto. This disclosure can be embodied in various different forms, such as handheld, handheld-rod, canister vacuum cleaners, upright vacuum cleaners, and robotic cleaners. However, detailed descriptions of relevant functions in the known art or detailed descriptions of elements and their specifications will be omitted if it is determined that such detailed descriptions and specifications may unnecessarily obscure the substance of this disclosure.

[0055] Figure 1 This is a perspective view of a vacuum cleaner 1 according to a first embodiment of the present disclosure. The vacuum cleaner 1 according to the first embodiment of the present disclosure may include a cleaner body 2, a suction unit (suction device or suction member) 4 for sucking up dust or dirt from a cleaning surface, and a connecting rod or tube 6 for conveying the dust or dirt sucked up by the suction unit 4 to the cleaner body 2.

[0056] The cleaner body 2 may include a suction motor 21 that generates suction, a filter assembly 22 that filters the dust or dirt being sucked up, and a battery 23 that powers the suction motor 21. The cleaner body 2 may also include a controller that controls the suction motor 21 and a manipulator for operating the vacuum cleaner 1 on or off.

[0057] The suction motor 21 generates suction to suck up dust or dirt.

[0058] The filter assembly 22 is detachably attached to the suction motor 21 to filter dust or dirt from the air drawn from the clean surface by suction force via the suction unit 4 and the connecting rod 6.

[0059] The filter assembly 22 may include a dust collection container for collecting filtered dust or dirt, with a filter disposed in the dust collection container leaving space therein, such as a cyclone separator.

[0060] The dust collection container can draw in air through the air inlet, which is introduced via the suction unit 4 and the connecting rod 6. The air drawn in as described above can be filtered to remove dust or dirt through the filter in the dust collection container, and then conveyed to the suction motor 21 for discharge to the outside.

[0061] Battery 23 can be implemented as a rechargeable secondary battery. Battery 23 supplies power to suction motor 21 and suction unit 4. Battery 23 may include charging terminals.

[0062] The suction unit 4 can use the suction power of the cleaner body 2 to remove dust or dirt from the cleaning surface to perform the cleaning operation.

[0063] The connecting rod 6 may include multiple tubes, each having a hollow portion inside to form an air passage between the cleaner body 2 and the suction unit 4. The connecting rod 6 can be formed by flexibly connecting multiple tubes.

[0064] Figure 2 yes Figure 1 A three-dimensional view of suction unit 4 in the image. Figure 3 It is shown Figure 2 The three-dimensional view of the suction unit 4 shows that the top cover 43 has been separated from the suction unit 4. Figure 4 yes Figure 2 An exploded perspective view of suction unit 4 in the image. Figure 5 It is along Figure 2 The sectional view taken by line AA in the figure.

[0065] Reference Figures 2 to 5 The suction unit 4 may include a lower frame 41 and a suction space 49 formed by connecting to the lower frame 41 (see reference). Figure 5 The dust guide 42, the upper cover 43 covering the upper part of the dust guide 42, the brush roller 44 that rotates and sweeps dust from the clean surface, and the roller motor 45 that is set in the lower frame 41 and rotates the brush roller 44.

[0066] The suction unit 4, which serves as a suction device, may include a rod connector 46 and first and second roller supports 47 and 48. The rod connector 46 is disposed between the suction space 49 formed by the lower frame 41 and the dust guide 42 and the connecting rod 6. The first and second roller supports 47 and 48 are disposed on opposite ends of the brush roller 44 and rotatably support the brush roller 44.

[0067] The lower frame 41 may include a motor housing unit 412 (see reference). Figure 4 The lower channel 414 and the motor housing unit 412 house the drum motor 45. The lower channel 414 forms a suction space 49 (see reference). Figure 5 The lower portion of the lower frame 41 is shaped like, for example, a semi-cylinder. The lower frame 41 includes an opening 416 that opens toward the floor cleaning surface. Dust can be introduced into the suction space 49 through the opening 416. The lower frame 41 may include multiple rollers that move by being spaced apart from the floor.

[0068] The dust guide 42 may include a contact portion 422 and a guide portion 424. The contact portion 422 is used to remove dust by contacting the outer peripheral surface of the brush roller 44, and the guide portion 424 is used to guide air containing dust. The dust guide 42 may be connected to the lower frame 41.

[0069] The top cover 43 may include a motor cover 432 that covers the roller motor 45 (see [link]). Figure 4 The brush roller 44 is partially covered by a housing 434, which is similarly cylindrical in shape. The housing 434 is disposed above the outer peripheral surface of the brush roller 44 to form a predetermined space relative to the brush roller 44.

[0070] The brush roller 44 brushes away dust from the floor cleaning surface, especially those deeply stuck between the many fibers in the carpet, to lift the dust to the top of the carpet.

[0071] The roller motor 45 generates power to rotate the brush roller 44. The roller motor 45 can be driven via the connecting rod 6 by electricity supplied by the battery 23 in the cleaner body 2.

[0072] The rod connector 46 may have one side detachably connected to the connecting rod 6 and the other side flexibly connected to the dust guide 42. The rod connector 46 has an internal space to connect the suction space 49 and the hollow portion of the connecting rod 6.

[0073] The first roller support 47 can rotatably support a first end of the brush roller 44. The first roller support 47 may include a connection to the roller body 442 (see...). Figure 5 The pulley 472 at the first end of the belt (see) Figure 4 The belt 474 transmits driving force between the pulley 472 and the roller motor 45. The pulley 472 may include bearings for rotation.

[0074] The second roller support 48 rotatably supports the second end of the brush roller 44.

[0075] Figure 6 It is along Figure 2 The sectional view taken from line BB in the middle. Figure 7 yes Figure 6 An exploded perspective view of brush roller 44. Figure 8 It is along Figure 4 The sectional view is taken by line CC.

[0076] Reference Figures 6 to 8 The brush roller 44 may include a roller body 442 shaped like a rotating rod, a cleaning member 444 formed on the outer peripheral surface of the roller body 442, a first roller connecting portion 446 inserted into and fixed to a first end of the roller body 442, and a second roller connecting portion 448 inserted into and fixed to a second end of the roller body 442.

[0077] The roller body 442 can be manufactured by injection molding using plastic or the like. The shape of the roller body 442 is similar to that of a container with a hollow interior. The roller body 442 may include first and second grooves 4422 and 4424 formed on its opposite ends and shaped as columns. A columnar first protrusion 4462 of the first roller connecting portion 446 and a columnar second protrusion 4482 of the second roller connecting portion 448 can be inserted into the first and second grooves 4422 and 4424, respectively.

[0078] The roller body 442 may include, for example, four convex portions 4426 protruding radially from the outer peripheral surface of the roller body 442, but the convex portions 4426 are not limited thereto. The convex portions 4426 may extend helically from the outer peripheral surface of the roller body 442 in the axial direction.

[0079] The cleaning member 444 may include a base 4442 attached to the outer peripheral surface of the roller body 442 and a plurality of bristles or filaments 4444 supported by the base 4442. The plurality of bristles or filaments 4444 may include bristles for cleaning purposes, such as lint comprising nylon yarn and antistatic bristles such as silver yarn, carbon yarn, and wire. The plurality of bristles or filaments 4444 may have the same height as the base 4442. Therefore, the cleaning member 444 may have a protruding outer peripheral surface 4446 similar to the first convex portion 4426, which is achieved by attaching to the outer peripheral surface of the roller body 442 having the convex portion 4426.

[0080] The cleaning component 444 may be wound around the outer peripheral surface of the roller body 442 along the axis of rotation, for example, at a 90-degree angle. Alternatively, the cleaning component 444 may be wound at an angle less than or greater than 90 degrees.

[0081] The first roller connecting portion 446 may include a cylindrical first protrusion 4462 formed on the surface of the first roller connecting portion 446 and protruding towards the roller body 442. The first protrusion 4462 formed on the surface of the first roller connecting portion 446 and facing the roller body 442 is inserted into and secured to a first groove 4422 formed in the first end of the roller body 442, and the second surface of the first roller connecting portion 446 may be rotatably connected to the pulley 472 of the first roller support 47 (see [link to relevant documentation]). Figure 4 Therefore, the brush roller 44 can rotate along with the pulley.

[0082] The second roller connecting portion 448 may include a cylindrical second protrusion 4482 formed on the surface of the second roller connecting portion 448 and protruding towards the roller body 442. Similar to the first roller connecting portion 446, the second protrusion 4482 formed on the surface of the second roller connecting portion 448 is inserted into and secured to a second groove 4424 formed in the second end of the roller body 442, and the second surface of the second roller connecting portion 448 may be rotatably connected to the second roller support 48 (see [link to documentation]). Figure 4 ).

[0083] Figure 9 yes Figure 7 A perspective view of the main body 442 of the roller.

[0084] Reference Figure 9 The roller body 442 may include, but is not limited to, four convex portions 4426-1 to 4426-4 protruding in the radial direction. The four convex portions 4426-1 to 4426-4 may be formed at equal intervals in the circumferential direction. The four convex portions 4426-1 to 4426-4 may extend helically in the axial direction.

[0085] Two adjacent convex portions 4426-1 and 4426-4 can overlap each other in the axial direction. The first point P1 of the first convex portion 4426-1 and the second point P2 of the fourth convex portion 4426-4 refer to the points of overlap in the axial direction. Of course, the first and second points P1 and P2 are described as an example, and many other combinations of overlap points are also possible. To make the two convex portions 4426-1 and 4426-4 overlap each other in the axial direction, the four corresponding convex portions 4426-1 to 4426-4 should be helically twisted at least 120 degrees in the axial direction. As a result, during cleaning, only one point of the lowest convex portion in the rotating brush roller 44 contacts the floor cleaning surface, and as rotation continues, the contact point can move in the helical extension direction of the convex portion. During cleaning, only a portion of the lowest convex portion relative to the outer peripheral surface of the brush roller 44 contacts the floor cleaning surface, thereby reducing friction and noise.

[0086] According to the modified embodiment, one, two, three, five or more convex portions may be provided on the roller body 442, which extend helically along the direction of rotation. The angle of helical twist of the convex portions may vary depending on the number of convex portions.

[0087] According to the modified embodiment, the internal shape of the roller body 442 having at least one of the convex portions 4426-1 to 4426-4 can vary, including circular and polygonal shapes.

[0088] According to the modified embodiment, at least one of the convex portions 4426-1 to 4426-4 may be twisted at an angle in the direction of rotation axis, including 120 degrees.

[0089] According to the modified embodiment, the contact point of each of the convex portions 4426-1 to 4426-4 may be one, three or more points that overlap each other.

[0090] Figure 10 It is along Figure 9 The sectional view taken by line DD in the middle.

[0091] Reference Figure 10Four arched portions 4428 can be provided between the four convex portions 4426-1 to 4426-4. The four arched portions 4428 can be provided at equal intervals according to the circumferential positions of the four convex portions 4426-1 to 4426-4. For the arched portions 4428, the height h2 of the rotation center O of the roller body 442 is lower than the height h1 of the convex portions 4426-1 to 4426-4. As a result, unlike the outer peripheral surface of the cleaning member 444 corresponding to the arched portions 4428, the outer peripheral surface of the cleaning member 444, which protrudes corresponding to the convex portions 4426-1 to 4426-4, can contact the cleaning surface floor during rotation.

[0092] The four arched portions 4428 may have a radius of curvature whose value is height h2. The four convex portions 4426-1 to 4426-4 may have inclined surfaces 4427 that gradually slope toward adjacent arched portions 4428. The four convex portions 4426-1 to 4426-4 gradually change from the peak T1 located in the arched portion 4428 to the base T2, thereby preventing the base 4442 of the cleaning member 444 (see reference) from being cleaned. Figure 8 A gap is created when it is attached to the outer peripheral surface of the roller body 442.

[0093] Figure 11 The brush roller 44 of the vacuum cleaner 1 according to the first embodiment of the present disclosure is shown in contact with the floor cleaning surface.

[0094] Reference Figure 11 The outer surface of the cleaning member 444 that contacts the floor cleaning surface corresponds to the lowest of the convex portions 4426-1 to 4426-4, and the remaining portion of the cleaning member 444 can be suspended relative to the floor, thus leaving a predetermined space relative to the floor. During the cleaning process, air is continuously introduced from the front through this space, thereby preventing the air suction channel from being evacuated and thus preventing the suction unit 4 from adhering to the cleaning surface.

[0095] The housing 434 of the top cover 43 covers a portion of the outer peripheral surface of the brush roller 44. A space is provided between the portion of the outer peripheral surface of the brush roller 44 and the inner surface of the housing 434 by means of the outer surface of the cleaning member 444 corresponding to the relatively low arch 4428. As a result, noise generated between the outer surface of the rotating brush roller 44 and the inner surface of the housing 434 can be reduced. In particular, large dirt adhering to the cleaning member 444 causes noise and damages the inner surface of the housing 434 when it passes through the contact portion 422 via the space between the outer surface of the brush roller 44 and the inner surface of the housing 434.

[0096] Figure 12The first embodiment of the present disclosure shows a brush roller 44 in contact with a corner cleaning surface of a vacuum cleaner 1.

[0097] Reference Figure 12 The housing 434 surrounds the brush roller 44 from the side opposite to the floor and extends to the front of the suction unit 4. The front end 4342 of the housing 434 may be as high as or higher than the outer surface of the brush roller 44 in the vertical direction.

[0098] When cleaning corners, if the brush roller 44 is placed in the corner, it may not adhere completely to the upper wall surface due to the spiral extension of the convex portion 4426, and air may be introduced from above. This introduction of air from above is not only unnecessary but may also lead to a loss of suction power at the corner. In this case, the vacuum cleaner 1 according to an embodiment of the present disclosure can allow air to be introduced into the corner from only one side because the protrusion of the housing, which is as high as or higher than the front end 4342 of the outer surface of the brush roller 44, can block the upper wall surface surrounding the corner. As a result, the vacuum cleaner 1 according to the first embodiment of the present disclosure can block the air introduced into the corner from above, thereby sucking in dust or dirt in the corner without difficulty.

[0099] Figure 13 This is a cross-sectional view of the brush roller 54 according to the second embodiment of the present disclosure. Figure 14 yes Figure 13 An exploded perspective view of brush roller 54.

[0100] Reference Figure 13 and Figure 14 The brush roller 54 may include a cylindrical roller body 542 and a cleaning component 544 surrounding the roller body 542.

[0101] The roller body 542 can be manufactured by injection molding using plastic or the like. The roller body 542 may have a rounded portion.

[0102] The cleaning component 544 may include a base 5442 attached to the outer peripheral surface of the roller body 542 and a plurality of bristles 5444 supported by the base 5442.

[0103] The base 5442 may include four convex portions 5443 protruding in the radial direction. Each convex portion 5443 may be helically twisted in the direction of rotation axis. Two adjacent convex portions 5443 may overlap each other in the direction of rotation axis.

[0104] Alternatively, the cleaning component 544 may be provided with one, two, three, or five or more convex portions that extend helically along the direction of rotation.

[0105] Figure 15This is a cross-sectional view of the brush roller 64 according to the third embodiment of this disclosure. Figure 16 yes Figure 15 A perspective view of the roller body 642 and the elastic component 643.

[0106] Reference Figure 15 and Figure 16 The brush roller 64 may include a cylindrical roller body 642, an elastic member 643, and a cleaning member 644 surrounding the roller body 642.

[0107] The roller body 642 can be manufactured by injection molding using plastic or the like. The roller body 642 may have a rounded portion.

[0108] The roller body 642 may include, for example, four grooves 6422 formed on its outer peripheral surface and extending helically along the direction of rotation axis. The four grooves 6422 may extend to be twisted at a predetermined angle, for example, twisted 90 degrees in the axial direction. Each groove 6422 may include a convex portion 6423, the center of which protrudes in the transverse direction. The grooves 6422 are not limited to four grooves.

[0109] The elastic member 643 can be inserted into the groove 6422 of the roller body 642 and attached thereto by an adhesive. The adhesive may include double-sided tape. The elastic member 643 may have a uniform thickness. The elastic member 643 may have a thickness such that when the elastic member 643 is inserted into the groove 6422, the elastic member 643 can protrude from the outer peripheral surface of the roller body 642 to the convex portion 6423. As another example, the elastic member 643 can be implemented by double injection molding or insert injection molding and formed in the groove 6422 of the roller body 642.

[0110] The elastic member 643 may include a material softer than the roller body 642. The roller body 642 may include a rigid material for structural safety, while the elastic member 643 may include a soft material for absorbing vibration.

[0111] The elastic member 643 may include a material that is more elastic than the roller body 642, such as synthetic rubber, natural rubber, synthetic resin, plastic, etc.

[0112] The cleaning component 644 may include a base 6442 attached to the outer peripheral surface of the roller body 642 and a plurality of bristles 6444 supported by the base 6442.

[0113] As described above, the elastic member 643, formed of soft material and located at a position corresponding to the convex portion 6423, can absorb vibrations generated when the protruding portion of the cleaning member 644, which protrudes due to the convex portion 6423, comes into contact with large dust or edge objects, thereby protecting the cleaning member 644.

[0114] Figure 17 This is a cross-sectional view of the brush roller 74 according to the fourth embodiment of this disclosure.

[0115] Reference Figure 17 The brush roller 74 may include a roller body 742, an elastic member 743, and a cleaning member 744 surrounding the roller body 742.

[0116] The roller body 742 may include, for example, four grooves 7422 formed on its outer peripheral surface and extending helically along the direction of rotation axis.

[0117] The elastic member 743 can be inserted into and attached to the groove 7422 of the roller body 742. The elastic member 743 may include a convex portion 7433, the center of which protrudes in the lateral direction.

[0118] The cleaning component 744 may include a base 7442 attached to the outer peripheral surface of the roller body 742 and a plurality of bristles 7444 supported by the base 7442.

[0119] Figure 18 This is a cross-sectional view of the brush roller 84 according to the fifth embodiment of this disclosure. Figure 19 yes Figure 18 A perspective view of the roller body 842 and the elastic component 843.

[0120] Reference Figure 18 and Figure 19 The brush roller 84 may include a roller body 842, an elastic member 843, and a cleaning member 844 surrounding the roller body 842.

[0121] The roller body 842 can have a rounded portion of uniform thickness.

[0122] The elastic member 843 may be attached to the outer peripheral surface of the roller body 842 to surround the roller body 842. The elastic member 843 may include, for example, four convex portions 8433 that project radially and extend helically in the axial direction.

[0123] like Figure 19 As shown, the elastic member 843 may include four convex portions 8433 extending diagonally on a square plate, the area of ​​which corresponds to the outer peripheral surface of the roller body 842. If the elastic member 843 surrounds the outer peripheral surface of the roller body 842, the convex portions 8433 may be formed to extend helically in the axial direction.

[0124] According to another embodiment, the elastic member 843 may be shaped like a ring placed in the roller body 842, rather than being set as a square plate.

[0125] According to another embodiment, the elastic member 843 may have a convex portion 8433, which has a different material from the rest of the elastic member 843. For example, the convex portion 8433 may include an elastic and soft material, while the rest of the member may include a material with less elasticity than the convex portion 8433.

[0126] The cleaning component 844 may include a base 8442 attached to the outer peripheral surface of the elastic component 843 and a plurality of bristles 8444 supported by the base 8442.

[0127] Figure 20 This is a cross-sectional view of the brush roller 94 according to the sixth embodiment of the present disclosure. Figure 21 yes Figure 20 A perspective view of the roller body 942 and the elastic component 943.

[0128] Reference Figure 20 and Figure 21 The brush roller 94 may include a roller body 942, for example four elastic members 943 and a cleaning member 944 surrounding the roller body 942.

[0129] The roller body 942 can have a rounded portion of uniform thickness.

[0130] The elastic member 943 may be attached to the outer peripheral surface of the roller body 942 to surround the roller body 942. The elastic member 943 may include a convex portion 9433 that protrudes in the radial direction and extends helically in the axial direction.

[0131] like Figure 21 As shown, the four elastic members 943 may include convex portions 9433, the center of which protrudes in the lateral direction. When the elastic members 943 surround the outer peripheral surface of the roller body 942 at a predetermined angle (e.g., at a 90-degree diagonal), the convex portions 9433 can be formed to extend helically in the axial direction.

[0132] According to another embodiment, the elastic member 943 can be divided into two, three, five or more elastic members.

[0133] The cleaning component 944 may include a base 9442 attached to the outer peripheral surface of the elastic component 943 and a plurality of bristles 9444 supported by the base 9442.

[0134] Figure 22 This is a cross-sectional view of the brush roller 104 according to the seventh embodiment of the present disclosure.

[0135] Figure 23 yes Figure 22 A perspective view of the roller body 1041 and the elastic member 1042.

[0136] Reference Figure 22 and Figure 23 The brush roller 104 may include a cylindrical roller body 1041, an elastic member 1042, and a cleaning member 1043 surrounding the roller body 1041.

[0137] The roller body 1041 can be manufactured by injection molding using plastic or the like. The roller body 1041 may have a rounded portion.

[0138] The roller body 1041 may include, for example, four convex portions 10412 that extend helically in the axial direction on the outer peripheral surface of the roller body 1041. The four convex portions 10412 may extend to twist at a predetermined angle, for example, twisting 90 degrees in the axial direction. The convex portions 10412 are not limited to four portions, and the twist angle is not limited to 90 degrees.

[0139] The elastic member 1042 can be attached to the outer peripheral surface of the roller body 1041 via an adhesive. The adhesive may include double-sided tape. The elastic member 1042 may have a uniform thickness. As a result, the elastic member 1042 may protrude to the same height as the convex portion 10412 of the roller body 1041.

[0140] The cleaning component 1043 may include a base 1044 attached to the outer peripheral surface of the roller body 1041 and a plurality of bristles 1045 supported by the base 1044.

[0141] Although several embodiments have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A vacuum cleaner, comprising: The main body of the cleaner is configured to generate suction. as well as The suction device includes an intake port for vacuuming dust by the suction force, a brush roller disposed at the intake port for sweeping dust off the floor, and a housing surrounding the brush roller on a side opposite to the floor. The housing is configured to include a front end formed extending from one side of the brush roller in the forward direction of the suction device beyond the outer peripheral surface of the brush roller, such that the housing partially surrounds the outer peripheral surface of the brush roller, and a portion of the outer peripheral surface of the brush roller facing the forward direction is exposed. The front end is configured to contact a wall surface forming a corner with the floor, such that the housing prevents air from being introduced into the corner along the wall surface. The brush roller includes: The main body of the roller can rotate along the axial direction of the brush roller. Multiple convex portions are formed to protrude from the outer peripheral surface of the brush roller body along the radial direction of the brush roller and extend spirally along the axial direction of the brush roller. The cleaning component surrounds the outer peripheral surface of the plurality of convex portions along the rotational direction of the roller body.

2. The vacuum cleaner according to claim 1, wherein, The cleaning component includes cotton cloth.

3. The vacuum cleaner according to claim 1, wherein, As the roller body rotates, a first point on the lowest side of the outer peripheral surface of the cleaning member moves in the helical extension direction of the plurality of convex portions, and the first point contacts the floor.

4. The vacuum cleaner according to claim 3, wherein, The second point on the lowest side of the outer peripheral surface of the cleaning component is spaced apart from the floor, such that when the roller body rotates, air is continuously introduced through the space between the second point and the floor.

5. The vacuum cleaner according to claim 1, wherein, The front end of the housing is configured to extend along the front of the suction device to prevent air from being introduced along the upper side of the wall surface that forms a corner with the floor.

6. The vacuum cleaner according to claim 4, wherein, The third point on the lowest side of the outer peripheral surface of the cleaning component is spaced apart from the floor, such that when the roller body rotates, air is continuously introduced through the space between the second point and the floor.

7. The vacuum cleaner according to claim 1, wherein, The housing is formed to be spaced apart from the outer peripheral surface of the cleaning component by a predetermined distance.

8. The vacuum cleaner according to claim 1, wherein, The brush roller includes: Multiple arched portions are respectively formed on the outer peripheral surface of the roller body between the multiple convex portions, and extend spirally along the axial direction of the brush roller. The height of the multiple arched portions is lower than the height of the multiple convex portions. Multiple inclined surfaces are formed, each gradually sloping from one of the multiple convex portions to an arched portion of the multiple arched portions, with corresponding convex portions and corresponding arched portions adjacent to each other. The cleaning component surrounds the outer peripheral surfaces of the plurality of arched portions and the plurality of inclined surfaces along the rotation direction of the roller body.

9. The vacuum cleaner according to claim 8, wherein, The main body of the roller has a cylindrical shape, and The corresponding convex portion and the corresponding arched portion are formed on the cylindrical outer peripheral surface of the roller body.

10. The vacuum cleaner according to claim 1, wherein, The brush roller includes: Multiple grooves formed on the plurality of convex portions extend spirally along the axial direction of the brush roller. Multiple elastic members that can be inserted into and attached to the plurality of grooves, and The cleaning component surrounds the outer peripheral surface of the plurality of elastic components along the rotation direction of the roller body.

11. The vacuum cleaner according to claim 10, wherein, The thickness of each of the plurality of elastic members is the same.

12. The vacuum cleaner according to claim 10, wherein, The plurality of elastic members extend from the outer peripheral surface of the roller body.

13. The vacuum cleaner according to claim 10, wherein, The plurality of elastic members is at least two or more.

14. The vacuum cleaner according to claim 7, wherein, When the roller body rotates, one portion of the outer peripheral surface of the cleaning member, corresponding to the position of the plurality of convex portions, contacts the floor, while another portion of the outer peripheral surface of the cleaning member is spaced apart from the floor.

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