Vacuum cleaner

Abstract

A vacuum cleaner is disclosed. The vacuum cleaner includes: a nozzle comprising a rotating cleaner positioned in front of an inlet; and a cleaner body that generates suction. A spiral first flow path is formed on the outer peripheral surface of the rotating cleaner. Fluff covers the outer peripheral surface of the rotating cleaner, excluding the first flow path. The first flow path on the rotating cleaner is formed as a single line. If the nozzle contacts a wall surface and cannot move forward, the front space of the nozzle can communicate with the inlet via the first flow path, and thus effectively suck in foreign objects such as dust from the edge of the wall surface.

Description

Technical Field

[0001] The present invention relates to a vacuum cleaner, which includes a nozzle having an inlet and a cleaner body that generates suction at the inlet. Background Technology

[0002] A vacuum cleaner is a device in which dust is configured to be drawn into the vacuum cleaner by a pressure difference of air.

[0003] A vacuum cleaner can be configured to include a cleaner body and a suction nozzle. A motor can be housed within the cleaner body, and when the motor rotates, it generates suction. The suction generated within the cleaner body is transmitted to the suction nozzle, allowing external dust to be drawn into the vacuum cleaner.

[0004] Based on their form, vacuum cleaners can be divided into canister type, upright type, portable / pole type, etc.

[0005] In a canister cleaner, the cleaner body with wheels is separate from the nozzle, and the cleaner body and nozzle are connected by a hose.

[0006] The upright cleaner is configured by connecting the cleaner body and nozzle to the push rod.

[0007] In portable / stick cleaners, a handle is integrated into the main body of the cleaner, allowing the user to grip and use it. In portable cleaners, the main body and nozzle are close together, while in stick cleaners, they are spaced further apart.

[0008] In addition, as a vacuum cleaner, there exists a robotic cleaner, which is configured to suck up dust as it moves autonomously through various sensors.

[0009] Devices configured to wipe or sweep floors can be connected to the nozzle of a vacuum cleaner.

[0010] Regarding vacuum cleaners, Korean Patent Registration No. 1248733 (hereinafter referred to as "Prior Art Document 1") discloses a vacuum cleaner including a suction nozzle. A rotating agitator is connected to the suction nozzle of Prior Art Document 1, and a brush is connected to the outer peripheral surface of the agitator. When the agitator rotates, the brush sweeps across foreign objects on the floor surface, and the foreign objects are introduced into the suction port.

[0011] As another prior art document, Korean Patent Registration No. 1903238 (hereinafter referred to as "Prior Art Document 2") discloses a vacuum cleaner including a rotating cleaning unit. The outer peripheral surface of the rotating cleaning unit of Prior Art Document 2 can be made of fabric or felt material, and when the rotating cleaning unit rotates, foreign objects such as dust accumulated on the floor surface are captured in the outer peripheral surface of the rotating cleaning unit for effective removal.

[0012] Thus, when a device such as the agitator of prior art document 1 or the rotary cleaning unit of prior art document 2 is installed in the vacuum cleaner, foreign objects on the floor surface can be effectively removed as the suction nozzle moves.

[0013] However, when the suction nozzle contacts the wall surface and does not move forward, the agitator of prior art document 1 or the rotary cleaning unit of prior art document 2 does not directly contact the foreign matter at the edge of the wall surface, and therefore cannot effectively achieve cleaning.

[0014] Specifically, in the case of prior art document 2, the bottom of the rotating cleaning unit contacts the floor surface, and in this case, since the rotating cleaning unit is located between the space at the corner of the wall surface (the front space of the rotating cleaning unit) and the rear space of the rotating cleaning unit, foreign objects at the corner of the wall surface may not be properly sucked into the suction port.

[0015] In the case of prior art document 1, the brush is only formed on a part of the outer peripheral surface of the agitator, so the front space and the rear space of the agitator are connected to each other, but the suction is not concentrated. As a result, it may take a considerable amount of time to suck up all the foreign objects.

[0016] Furthermore, as mentioned above, the outer peripheral surface of the rotary cleaning unit in prior art document 2 can be made of a fabric or felt material such as cotton lint. When the rotary cleaning unit is wetted with water, the water may evaporate, and the bristles constituting the rotary cleaning unit may not return to their original shape, becoming bent and deformed. When the rotary cleaning unit is deformed, it may not make close contact with the bottom surface, resulting in a possible deterioration in the cleaning ability of the vacuum cleaner.

[0017] In addition, if water or foreign matter that gets into the rotary cleaning unit is not properly removed, the rotary cleaning unit may become contaminated or bacteria may proliferate. Summary of the Invention

[0018] Technical issues

[0019] This disclosure describes a vacuum cleaner with a flow path that allows suction formed at the inlet to be concentrically transmitted to a specific point in the front space of the rotary cleaner when the nozzle of the rotary cleaner, which includes a rotating nozzle in front of the inlet, contacts a wall surface and does not travel forward.

[0020] This disclosure describes a vacuum cleaner with a flow path that, when the rotary cleaner rotates, allows the suction formed at the inlet to be seamlessly transferred to the front space of the rotary cleaner.

[0021] This disclosure describes a vacuum cleaner in which the direction of the applied suction can be switched in a flow path in which foreign matter can move when the rotary cleaner rotates.

[0022] This disclosure describes a vacuum cleaner in which sensing of the wall surface and the resulting suction control can be effectively achieved.

[0023] This disclosure describes a vacuum cleaner in which suction can be increased at the suction inlet of the nozzle before the nozzle contacts the front wall surface.

[0024] This disclosure describes a vacuum cleaner that prevents water from being absorbed into the rotating cleaner.

[0025] This disclosure describes a vacuum cleaner that can effectively remove water when a rotating cleaner becomes contaminated with water.

[0026] This disclosure describes a vacuum cleaner that prevents bacteria from multiplying in a rotating cleaner.

[0027] Technical solution

[0028] According to one aspect of the invention, a vacuum cleaner is configured to include a cleaner body and a suction nozzle connected to the cleaner body. The cleaner body and the suction nozzle can be connected via a connecting tube.

[0029] The nozzle is configured to include a nozzle head unit and a rotary cleaner.

[0030] An intake port is provided at the bottom of the nozzle head unit.

[0031] The rotary cleaner is rotatably connected to the nozzle head unit based on a first rotation axis parallel to the left-right direction. The rotary cleaner is located in front of the suction port.

[0032] A first motor is provided in the cleaner body. The first motor rotates within the cleaner body, thereby creating suction in the suction port.

[0033] According to one aspect of the invention, the rotary cleaner is configured to include a core, a fluffing material, and a first flow path.

[0034] The core is configured as a cylindrical shape with the first axis of rotation as its central axis.

[0035] The fluff is configured to include at least one of a brush and a fabric. The fluff is attached to the outer peripheral surface of the core to contact the bottom surface.

[0036] The first flow path intersects the fluff and has a groove in the form of a groove arranged in a direction inclined relative to the first axis of rotation.

[0037] The outer peripheral surface of the rotary cleaner, excluding the first flow path, is covered with the fluffy material.

[0038] The first flow path is configured as a line in the rotary cleaner.

[0039] The first flow path includes a first boundary surface and a second boundary surface.

[0040] The first boundary surface forms the boundary between the first flow path and the fluff. The first boundary surface is configured in a spiral shape.

[0041] The second boundary surface forms the boundary between the first flow path and the fluff on the opposite side of the first boundary surface. The second boundary surface is configured in a spiral shape.

[0042] Based on the rotation direction of the rotary cleaner, the second boundary surface is located behind the first boundary surface.

[0043] In the cross-section of the rotary cleaner, the first boundary surface and the second boundary surface are configured to be perpendicular to the outer peripheral surface of the core.

[0044] In some implementations, the interval between the inner ends of the first boundary surface and the inner ends of the second boundary surface is three to four times the height of the first boundary surface.

[0045] In some embodiments, the core has an outer diameter of 35 mm to 40 mm and a length of 210 mm to 230 mm.

[0046] In some embodiments, the first flow path has a width of 15 mm to 25 mm and a depth of 3 mm to 7 mm.

[0047] The first flow path is configured in a spiral shape and has a constant width and depth in the longitudinal direction.

[0048] In some embodiments, the angle between a first normal plane intersecting the front end of the first boundary surface on the normal plane of the outer peripheral surface of the rotating cleaner and a second normal plane intersecting the rear end of the second boundary surface on the normal plane of the outer peripheral surface of the rotating cleaner is 0° to 45°.

[0049] The first boundary surface includes a first front end forming a front end and a first rear end forming a rear end based on the rotation direction of the rotary cleaner.

[0050] The second boundary surface includes a second front end forming a front end and a second rear end forming a rear end based on the rotation direction of the rotary cleaner.

[0051] In some embodiments, the reference line connecting the first front end and the second rear end is configured to be parallel to the first axis of rotation.

[0052] The nozzle head unit includes a first outflow path and a second outflow path.

[0053] The first outflow path forms a space at the inlet that extends in a direction parallel to the first axis of rotation.

[0054] The second outflow path forms a space at the inlet that extends in the opposite direction to the first flow path.

[0055] In some embodiments, the rear side of the rotary cleaner is exposed to the suction port, the first outlet flow path, and the second outlet flow path in a region below the first axis of rotation.

[0056] The nozzle head unit is configured to include an upper housing, a lower housing, a first sidewall, a second sidewall, and an inner wall.

[0057] The upper housing includes an upper cover that is formed along a direction parallel to the first axis of rotation and covers the upper side of the rotary cleaner.

[0058] The lower housing is located below the upper housing and has the intake port formed at the front end in the left-right direction.

[0059] The first sidewall shields one side surface of the rotating cleaner and is connected to the upper housing and the lower housing.

[0060] The second sidewall shields the side surface of the first sidewall and is connected to the upper housing and the lower housing.

[0061] The inner wall is formed in a direction parallel to the first axis of rotation and contacts the rotary cleaner at the rear. The top of the inner wall is connected to the bottom of the upper housing, and the bottom edge is configured to be higher than the rotary cleaner.

[0062] The bottom of the inner wall can be configured to be lower than the first axis of rotation.

[0063] The front corner of the top cover can be located in front of the rotating cleaner and can be parallel to the first rotation axis.

[0064] In the first sidewall and the second sidewall, the lower front corner may be inclined or configured as an inclined curve.

[0065] In some embodiments, a second flow path in an inwardly stepped shape is formed at the bottom of the outer surface of the first sidewall, and a third flow path in an inwardly stepped shape is formed at the bottom of the outer surface of the second sidewall.

[0066] In some embodiments, the rotary cleaner is configured to include the core and an outer peripheral surface layer coupled to the outer peripheral surface of the core.

[0067] The outer peripheral surface layer is configured to include a fluffy region forming the fluff and a first flow path region forming the first flow path.

[0068] When the outer peripheral surface layer is flattened, the fluffy region has a parallelogram shape, and the first flow path region is formed along one side of the fluffy region.

[0069] According to one aspect of the invention, the vacuum cleaner is configured to further include a distance sensor.

[0070] The distance sensor is coupled to the nozzle and configured to sense the distance to a wall surface located in front of the nozzle.

[0071] In some implementations, the rotational speed of the first motor is configured to increase when the distance value sensed by the distance sensor is equal to or less than a reference value.

[0072] The distance sensor can be configured as an optical sensor and is located above the center of the nozzle in the left-right direction.

[0073] The nozzle is configured to also include a connecting neck and a nozzle neck unit.

[0074] The connecting neck is configured in the form of a tube and is connected to the cleaner body.

[0075] The nozzle neck unit is configured in the form of a tube and extends rearward within the nozzle head unit. The nozzle neck unit is rotatably connected to the connecting neck about a second axis of rotation.

[0076] The distance sensor can be connected to the upper side of the mouthpiece neck unit at a point above the top of the mouthpiece head unit.

[0077] In some embodiments, the distance from the front end of the nozzle to the distance sensor may be 50mm to 70mm, and the reference value may be 120mm to 140mm.

[0078] According to one aspect of the invention, the vacuum cleaner is configured to include a second motor.

[0079] The second motor is connected to the suction nozzle and causes the rotary cleaner to rotate.

[0080] In some embodiments, the rotational speed of the second motor can be configured to increase when the distance value sensed by the distance sensor is equal to or less than a reference value.

[0081] According to one aspect of the invention, the fluffy material may be composed of a combination of fibers having waterproof, water-repellent, or antimicrobial properties. The fibers constituting the fluffy material may be configured in the form of bristles.

[0082] The fluffy material can be configured, for example, in the form of a brush.

[0083] In some embodiments, the fibers constituting the fluffy material may be configured to be coated with a water-repellent or water-repellent agent.

[0084] In some embodiments, the fluffy material may be made of polyamide fibers, polyester fibers, or polypropylene fibers, or combinations thereof.

[0085] In some embodiments, the fibers constituting the fluffy material may be made of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), nylon, or silicone.

[0086] In some embodiments, the fibers constituting the fluffy material may be configured to include an antimicrobial agent.

[0087] In some embodiments, the fluffy material may be divided into an inner layer and an outer layer.

[0088] The inner layer is a layer located on the inner side of the fluffy material. The inner layer is a layer connected to the core.

[0089] The outer layer is the outermost layer in the fluffy material. The outer layer extends from the inner layer to form the surface of the fluffy material.

[0090] In some embodiments, the inner layer may be configured to be waterproof, water-repellent, or antimicrobial.

[0091] The fibers of the fluffy material can be configured such that the diameter decreases towards the apex.

[0092] In some embodiments, the rotary cleaner may be configured to also include a dehydration flow path.

[0093] The dehydration flow path can be configured as a groove within the fluffy material.

[0094] Multiple dehydration flow paths can be provided in the rotary cleaner.

[0095] The width of the dehydration flow path can be configured to be greater than the diameter of the fibers constituting the fluff and less than the width of the first flow path.

[0096] Beneficial effects

[0097] In some embodiments, a first flow path in the form of a groove is formed on the outer peripheral surface of the rotary cleaner, and the first flow path is configured to intersect the fluff in a direction inclined relative to the first axis of rotation. The outer peripheral surface of the rotary cleaner, excluding the first flow path, is covered with fluff, and the first flow path is configured along a line within the rotary cleaner. When the rotary cleaner rotates, the front space of the rotary cleaner communicates with the suction inlet, and the suction force of the suction inlet can be concentrically transmitted to a specific point in the front space of the rotary cleaner, effectively sucking up foreign objects even when the nozzle is located at the edge of the wall surface.

[0098] In some embodiments, the first flow path includes a first boundary surface and a second boundary surface, and a reference line connecting the first front end portion of the first boundary surface and the second rear end portion of the second boundary surface is configured to be parallel to the first axis of rotation. This disclosure describes a vacuum cleaner having a flow path that, when the rotary cleaner rotates, allows suction formed at the inlet to be seamlessly transferred to the front space of the rotary cleaner.

[0099] In some embodiments, a distance sensor is formed in the suction nozzle, and the rotational speed of the first motor in the cleaner body is configured to increase when the distance value sensed by the distance sensor is equal to or less than a reference value. Therefore, a vacuum cleaner can be provided in which the suction instantly increases when a wall surface is sensed, thereby rapidly sucking in foreign objects at the edges of the wall surface and efficiently utilizing the battery.

[0100] In some implementations, the distance sensor can be configured as an optical sensor. The distance from the tip of the nozzle to the distance sensor is configured to be shorter than a reference value, which in this case is determined by the general moving speed of the vacuum cleaner's nozzle and the time it takes for the suction change to be transmitted from the cleaner body to the nozzle. As a result, suction in the nozzle can be increased just before it contacts the front wall, enabling effective cleaning while minimizing energy consumption (battery power).

[0101] In some embodiments, the fibers constituting the bulk can be configured to be waterproof or water-repellent. In one embodiment, the fibers constituting the bulk can be coated with a water-repellent or waterproof agent, and in another embodiment, the fibers constituting the bulk can be made of waterproof fibers. For example, the fibers constituting the bulk can be made of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), nylon, or silicone. Therefore, water can be prevented from being absorbed by the bulk of the rotary cleaner, and water removal can be effectively performed when the bulk becomes wet.

[0102] In some embodiments, the fibers constituting the bulk can be configured to have antimicrobial properties. In one embodiment, the bulk can be configured to include an antimicrobial agent. Therefore, bacterial proliferation in the bulk can be effectively prevented.

[0103] In some embodiments, the bulk material can be divided into an inner layer and an outer layer, and the inner layer can be configured to be waterproof or water-repellent. When water is absorbed into the bulk material, the water can move to the outer layer instead of the inner layer, and when the vacuum cleaner is operated, centrifugal force can be applied to the bulk material by rotating the cleaner, and the water contaminated in the outer layer can be effectively removed by centrifugal force.

[0104] In one embodiment, the fibers of the fluff can be configured such that the diameter decreases towards the apex. Therefore, when the fluff is contaminated with water, the water can easily move to the outer peripheral surface of the fluff, and when centrifugal force is applied to the fluff, the water can be easily removed from the fluff.

[0105] In one embodiment, the rotary cleaner is configured to include a dehydration flow path. The dehydration flow path can be configured as a recess within the fluff. Water contaminated in the fluff can be effectively removed through the dehydration flow path, and in this case, the suction transmitted through the first flow path is not distributed to the dehydration flow path. Attached Figure Description

[0106] Figure 1 This is a perspective view showing a vacuum cleaner according to an embodiment of the present invention.

[0107] Figure 2This is a cross-sectional view showing the main body of the cleaner. Figure 2 The diagram schematically shows the location of components located within the main body of the cleaner.

[0108] Figure 3 This is a diagram showing the usage status of a vacuum cleaner.

[0109] Figure 4a This is a perspective view showing a suction nozzle according to an embodiment of the present invention.

[0110] Figure 4b It is shown Figure 4a Side view of the suction nozzle.

[0111] Figure 5 It is shown Figure 4a An exploded 3D view of the suction nozzle.

[0112] Figure 6 It is shown schematically. Figure 4a A cross-sectional view of the nozzle in A-A'. Figure 6 The schematic diagram shows the direction of air movement introduced into the inlet.

[0113] Figure 7 This is a diagram showing the nozzle as viewed from the front.

[0114] Figure 8 This is a diagram showing the nozzle as viewed from the bottom.

[0115] Figure 9 This is a diagram showing a rotating cleaner.

[0116] Figure 10a This is a diagram showing the core of a rotating cleaner.

[0117] Figure 10b and Figure 10c Each of these is a diagram showing a view in which the outer peripheral surface layer constituting the rotating cleaner is unfolded.

[0118] Figure 10d It is shown Figure 10c A diagram showing the cross-section of the outer peripheral surface layer.

[0119] Figure 11a It shows Figure 9 The B-B' section, Figure 11b It shows Figure 9 The C-C' section, Figure 11c It shows Figure 9 The D-D' section.

[0120] Figure 12a This is a diagram illustrating a rotary cleaner according to an embodiment. Figure 12b It is shown Figure 12aSide view of a rotating cleaner.

[0121] Figure 13 Each of (a), (b), (c), (d), (e), (f), (g), and (h) is a schematic diagram showing a view of a rotary cleaner rotating in contact with the floor surface and the front wall surface.

[0122] Figure 14 Each of (a), (b), (c) and (d), as a diagram showing the nozzle contacting the front wall surface as viewed from the bottom, is a schematic diagram showing the direction and path of air movement.

[0123] Figure 15 Each of (a), (b), (c) and (d), as a diagram showing the nozzle contacting the front and left wall surfaces as viewed from the bottom, is a schematic diagram showing the direction and path of air movement.

[0124] Figure 16 Each of (a), (b), (c) and (d), as a diagram showing the nozzle contacting the front and right wall surfaces as viewed from the bottom, is a schematic diagram showing the direction and path of air movement.

[0125] Figure 17 The side view of the suction nozzle is a schematic diagram showing the view of the front wall surface sensed by the distance sensor.

[0126] Figure 18a , Figure 18b and Figure 18c Each of the diagrams shown as an illustration of the suction nozzle from the top is a schematic illustration of a view of the front wall surface sensed by a distance sensor.

[0127] Figures 19 to 22 These are cross-sectional views of rotary cleaners according to different embodiments.

[0128] Figure 23a This is a diagram illustrating a rotary cleaner according to an embodiment. Figure 23b It is shown Figure 23a Cross-sectional view of a rotary cleaner. Detailed Implementation

[0129] In the following description, embodiments of the invention will be described in more detail with reference to the accompanying drawings. Throughout the detailed description, the same reference numerals denote the same elements.

[0130] Figure 1 This is a perspective view showing a vacuum cleaner 1 according to an embodiment of the present disclosure.

[0131] Figure 2 This is a cross-sectional view showing the cleaner body 30. Figure 2 The location of the components disposed in the cleaner body 30 is schematically shown.

[0132] The vacuum cleaner 1 is configured to draw in outside air and / or foreign objects such as dust and hair.

[0133] In one embodiment, the vacuum cleaner 1 is configured to include a cleaner body 30 and a suction nozzle 10. The vacuum cleaner 1 may also be configured to include a connecting tube 20, and the cleaner body 30 and the suction nozzle 10 may be connected via the connecting tube 20.

[0134] The suction nozzle 10 includes a suction port 101 as an opening (inlet) through which external air and foreign objects are introduced (see...). Figure 6 External air and foreign objects are first introduced through the suction port 101 of the nozzle 10, and then moved to the cleaner body 30 through the connecting tube 20.

[0135] The suction nozzle 10 will be described in detail below.

[0136] The cleaner body 30 is configured to generate suction.

[0137] For this purpose, the cleaner body 30 includes a first motor. The first motor 31 rotates within the cleaner body 30, thereby generating suction in the suction port 101.

[0138] In one embodiment, the motor, including the first motor 31, described in the embodiments of the present invention, may be a BLDC motor or a stepper motor.

[0139] The fan is connected to the rotation axis 31a of the first motor 31 of the cleaner body 30, and as a result, an airflow is generated when the first motor 31 rotates.

[0140] The first motor 31 and the fan connected to the first motor 31 rotate about the rotation axis 31a, thereby creating a pressure difference between the inside and outside of the cleaner body 30, resulting in suction in the cleaner body 30.

[0141] The connecting tube 20 connects the cleaner body 30 and the nozzle 10. The connecting tube 20 is configured as a tube or pipe and forms a channel for external air introduced through the suction port 101 to move toward the cleaner body 30.

[0142] The connecting tube 20 can be made of a relatively rigid material so that it will not bend or deform unintentionally. The connecting tube 20 can be made of plastic or metal, or configured to include both plastic and metal.

[0143] The connecting tube 20 is configured to include a first connecting unit 21 and a second connecting unit 22.

[0144] The first connecting unit 21 can form the inlet of the connecting pipe 20, through which external air is introduced into the connecting pipe 20, and the second connecting unit 22 can form the outlet of the connecting pipe 20, through which air in the connecting pipe 20 is discharged to the cleaner body 30.

[0145] The first connecting unit 21 and the second connecting unit 22 can form the two ends of the connecting pipe 20.

[0146] In one embodiment, the cleaner body 30 can be fixedly connected to the second connecting unit 22 of the connecting tube 20. That is, the cleaner body 30 and the connecting tube 20 can be configured to be fixed to each other without moving independently. In this case, the vacuum cleaner 1 can be configured as a "stick cleaner".

[0147] In another embodiment, the cleaner body 30 can be connected to the second connecting unit 22 of the connecting tube 20 via a separate device. For example, a flexible, separately bent hose can be connected between the connecting tube 20 and the cleaner body 30. That is, in the vacuum cleaner 1, the cleaner body 30 and the connecting tube 20 can be configured to move independently. In this case, the vacuum cleaner 1 can be configured as a "canister cleaner".

[0148] In the following text, such as Figure 1 As shown, the present invention will be described in the form of a second connecting unit 22 to which the cleaner body 30 is fixed to the connecting tube 20 and a first connecting unit to which the nozzle 10 is fixed to the connecting tube 20.

[0149] In one embodiment, the cleaner body 30 may be configured to include a handle 32, a dust collection box 33, a main body suction port 34, and a battery 35. A control unit 38 may be disposed in the cleaner body 30.

[0150] A handle 32 is formed on one side of the cleaner body 30. The handle 32 is configured to be held securely by the user. The handle 32 may be formed on the side opposite to the main body suction port 34. If the main body suction port 34 is formed at the front of the cleaner body 30, the handle 32 may be formed at the rear of the cleaner body 30.

[0151] The operation button 36 for operating the vacuum cleaner 1 can be located in the cleaner body 30 near the handle 32.

[0152] The dust collection box 33 is a container configured to collect foreign matter such as dust separated from the air inside the cleaner body 30. Foreign matter such as dust introduced into the cleaner body 30 can be separated from the air by a cyclone mechanism. In addition, the air separated from the dust inside the cleaner body 30 can be discharged to the outside of the cleaner body 30 through a separate exhaust port 37.

[0153] The dust collection box 33 can be detachably connected to the cleaner body 30. The dust collection box 33 can be configured to be transparent so that the dust collected in it can be seen with the naked eye.

[0154] The battery 35 is configured to power each component constituting the vacuum cleaner 1. The battery 35 can power the first motor 31 of the cleaner body 30 and the second motor 470 of the nozzle 10.

[0155] The main body suction port 34 forms the inlet of the cleaner body 30, through which air, dust, and other contaminants are introduced into the cleaner body 30. The main body suction port 34 can be configured to protrude outside the cleaner body 30.

[0156] The second connecting unit 22 of the connecting tube 20 can be fixedly connected to the main body suction port 34.

[0157] The control unit 38 is configured to control the operation of the vacuum cleaner 1 and the operation of each component constituting the vacuum cleaner 1. The control unit 38 may be configured to include a central processing unit. A storage medium for storing the application program may be provided in the vacuum cleaner 1 for the control of the control unit 38, and the control unit 38 may be configured to control the vacuum cleaner 1 by driving the application program based on information input to the vacuum cleaner 1, information output from the vacuum cleaner 1, information acquired by the vacuum cleaner 1, etc.

[0158] Figure 3 This is a diagram showing the usage status of the vacuum cleaner 1.

[0159] Figure 4a This is a perspective view showing a suction nozzle 10 according to an embodiment of the present invention.

[0160] Figure 4b It is shown Figure 4a The nozzle in a side view on the opposite side.

[0161] Figure 5 It is shown Figure 4a An exploded perspective view of the nozzle 10.

[0162] Figure 6 It is shown schematically. Figure 4a A cross-sectional view of the nozzle 10.

[0163] In embodiments of the present invention, the first direction X, the second direction Y, and the third direction Z are orthogonal to each other. The first direction X can be the front direction of the vacuum cleaner 1, the second direction Y can be the left direction of the vacuum cleaner 1, and the third direction Z can be the upward direction of the vacuum cleaner 1. The first direction X and the second direction Y can be parallel to the bottom surface B, and the third direction Z can be parallel to the bottom surface B.

[0164] In embodiments of the present invention, the front-back direction described can be parallel to the first direction X, the left-right direction can be parallel to the second direction Y, and the up-down direction can be parallel to the third direction Z.

[0165] User U can use vacuum cleaner 1 while gripping the cleaner body 30. In this case, the connecting tube 20 can be positioned at an angle to the lower front of user U, and the suction nozzle 10 can be positioned in front of user U on the bottom surface B. In this state, the use of vacuum cleaner 1 can be considered its natural operating state.

[0166] In one embodiment, the suction nozzle 10 can be configured to suck up dust when placed on the front bottom surface B of the user U. For this purpose, the suction nozzle 10 can be configured with its front-to-back direction and its up-and-down direction opposite to each other.

[0167] When it is assumed that the suction nozzle 10 is placed horizontally on the flat bottom surface B, each of the front direction (first direction X) and left direction (second direction Y) of the suction nozzle 10 can be a direction parallel to the horizontal direction, and the upper direction (third direction Z) of the suction nozzle 10 can be a direction parallel to the vertical direction.

[0168] The nozzle 10 can be formed in a symmetrical shape.

[0169] As described above, the nozzle 10 is configured to include a suction port 101.

[0170] The suction port 101 can be the initial inlet through which dust is introduced into the vacuum cleaner 1, and the nozzle 10 can be configured in various structures within the scope of having the suction port 101.

[0171] In one embodiment, the nozzle 10 may be configured to include a nozzle housing 11 and a connecting neck 300.

[0172] In addition, the nozzle 10 is configured to include a rotating cleaner 400.

[0173] The nozzle housing 11 can be configured to be placed on the bottom and move along the bottom surface B. In this case, the suction port 101 can be formed on the lower surface of the nozzle housing 11.

[0174] To ensure smooth movement of the nozzle housing 11 placed on the bottom surface, multiple wheels (casters 180) can be formed on the lower surface of the nozzle housing 11.

[0175] The nozzle housing 11 may be configured to include a nozzle head unit 100 and a nozzle neck unit 200. The nozzle head unit 100 may form the front portion of the nozzle housing 11, and the nozzle neck unit 200 may form the rear portion of the nozzle head unit 100.

[0176] The suction port 101 may be formed on the lower surface of the nozzle head unit 100.

[0177] The nozzle neck unit 200 is configured in the form of a tube and extends rearward at the rear of the nozzle head unit 100. In the nozzle housing 11, the nozzle neck unit 200 is part of the connecting neck 300, and the nozzle neck unit 200 can be connected to the connecting neck 300 so that they are rotatable relative to each other.

[0178] A rotary cleaner 400 is disposed in the nozzle 10. The rotary cleaner 400 is substantially configured in a coil form and is coupled to the nozzle housing 11 (nozzle head unit 100) to be rotatable based on a central axis (first rotation axis R1). The rotary cleaner 400 can be located at the suction port 101 (see...). Figure 1 The front of the nozzle is connected to the lower surface of the nozzle housing 11 (nozzle head unit 100).

[0179] A motor (second motor 470) may be installed inside the suction nozzle 10 to rotate the rotary cleaner 400.

[0180] A fluffy material 420, configured to include a brush and / or lint, is formed on the outer peripheral surface of the rotary cleaner 400. The fluffy material 420 of the rotary cleaner 400 may be configured to contact or be very close to the bottom surface B, and may sweep or absorb dust on the bottom towards the suction port 101 as the rotary cleaner 400 rotates.

[0181] A first flow path 430 in the form of a groove is formed on the outer peripheral surface of the rotary cleaner 400. The first flow path 430 forms a channel for the movement of air and / or foreign objects therein. Specifically, the first flow path 430 forms a channel for foreign objects located on the front bottom surface B to move to the suction port 101 located at the rear of the rotary cleaner 400.

[0182] The connecting neck 300 is the part that makes the connection in the connecting tube 20 of the nozzle 10. The connecting neck 300 is detachably connected to the first connecting unit 21. The connecting neck 300 can be configured in the form of a tube, and the interior of the connecting neck 300 communicates with the suction port 101 and the interior of the connecting tube 20.

[0183] A button 310 for detaching from the connecting tube 20 connected to the connecting neck 300 can be provided in the connecting neck 300.

[0184] Dust introduced into the suction port 101 can move toward the connecting tube 20 through the interior of the nozzle neck unit 200 and the connecting neck 300 in the nozzle 10. A separate bellows 170 can be inserted into the nozzle housing 11 (particularly the nozzle neck unit 200) and the connecting neck 300, and when the bellows 170 is provided, dust introduced into the suction port 101 moves toward the connecting tube 20 through the interior of the bellows 170.

[0185] The connecting neck 300 can form the rear part of the nozzle 10 and can be formed in the rear part of the nozzle housing 11.

[0186] As described above, the nozzle housing 11 (nozzle neck unit 200) and the connecting neck 300 are rotatably connected to each other. The nozzle housing 11 (nozzle neck unit 200) and the connecting neck 300 are rotatably connected to each other based on a second rotation axis R2. The second rotation axis R2 can be configured to be parallel to the bottom surface B.

[0187] Figure 7 This is a diagram showing the nozzle 10 as viewed from the front.

[0188] Figure 8 This is a diagram showing the nozzle 10 as viewed from the bottom.

[0189] The nozzle head unit 100 is configured to include an upper housing 110, a lower housing 120, a first sidewall 130, a second sidewall 140, and an inner wall 150.

[0190] The nozzle head unit 100 can be configured in a left-right symmetrical form.

[0191] The upper housing 110 includes an upper cover 111.

[0192] The top cover 111 is configured to extend along a second direction Y. In the second direction Y, the length of the top cover 111 is slightly greater than the length of the rotary cleaner 400.

[0193] The cross-section of the top cover 111 can be configured to be constant. The inner surface of the top cover 111 can be configured to be concave and can be configured to have a curvature corresponding to (same as or similar to) the curvature of the outer surface of the rotary cleaner 400.

[0194] The top cover 111 is located above the rotary cleaner 400. The inner surface of the top cover 111 may contact the outer surface of the rotary cleaner 400, or the inner surface of the top cover 111 may be separated from the outer surface of the rotary cleaner 400 by a small gap.

[0195] The front corner 111a of the top cover 111 can be arranged in a straight line along the second direction Y. That is, the front corner 111a of the top cover 111 can be arranged parallel to the second direction Y (or the first axis of rotation R1).

[0196] Based on the front-rear direction (first direction X), the front corner 111a of the top cover 111 can have the same shape as the front end of the rotary cleaner 400, or it can be located behind or in front of the front end of the rotary cleaner 400.

[0197] The upper housing 110 may be configured to include a rear cover 112.

[0198] In the upper housing 110, when the upper cover 111 forms the front part, the rear cover 112 forms the rear part.

[0199] The rear cover 112 is attached to the rear side of the upper cover 111. The rear cover 112 can be configured to extend along the second direction Y, and the length of the rear cover 112 can be configured to be the same as or similar to the length of the upper cover 111 in the second direction Y.

[0200] The rear cover 112 forms part of the nozzle neck unit 200 that is fixedly connected to the upper housing 110.

[0201] The lower housing 120 is configured to extend substantially along the second direction Y. The length of the lower housing 120 is configured to be slightly greater than the length of the rotary cleaner 400 in the second direction Y.

[0202] The lower housing 120 forms the lower surface of the nozzle head unit 100 and the lower surface of the nozzle housing 11.

[0203] The lower housing 120 is fixed to the upper housing 110 and is located below the upper housing 110.

[0204] The lower housing 120 is located at the rear of the rotary cleaner 400. When the lower housing 120 is fixed to the upper housing 110, the suction port 101 is located between the lower housing 120 and the rotary cleaner 400. That is, the suction port 101 is located in the front of the lower housing 120. In particular, the suction port 101 is located at the center of the lower housing 120 in the left-right direction.

[0205] The first sidewall 130 is configured to shield one side surface of the rotary cleaner 400 and is fixedly connected to the upper housing 110 and the lower housing 120.

[0206] The second sidewall 140 shields the side surface of the rotary cleaner 400 on the side opposite to the first sidewall 130 and is fixedly connected to the upper housing 110 and the lower housing 120.

[0207] When the first sidewall 130 forms the left surface of the nozzle head unit 100, the second sidewall 140 forms the right surface of the nozzle head unit 100.

[0208] The first sidewall 130 is configured to include a first tilting unit 132. The first tilting unit 132 may form the lower front corner of the first sidewall 130 and may be configured to be tilted or curved. The first tilting unit 132 may be configured to face the rear when facing downward.

[0209] The second sidewall 140 is configured to include a second tilting unit 142. The second tilting unit 142 may form the lower front corner of the second sidewall 140 and may be configured to be tilted or curved. The second tilting unit 142 may be configured to face the rear when facing downward.

[0210] In one embodiment, a second flow path 131 is formed in a first sidewall 130, and a third flow path 141 is formed in a second sidewall 140.

[0211] The second flow path 131 can be configured such that a portion of the outer surface of the first sidewall 130 is stepped inward. That is, the outer surface of the first sidewall 130 is configured to be recessed inward in the portion forming the second flow path 131.

[0212] The second flow path 131 can be formed throughout the entire interval in the front-back direction (first direction X) of the first sidewall 130. The second flow path 131 is connected to the first inclined unit 132.

[0213] As a result, when the first sidewall 130 is in close contact with the interior wall surface, the first sidewall 130 is spaced apart from the interior wall surface at at least the point forming the second flow path 131, and the air outside and inside the nozzle can be connected through the second flow path 131.

[0214] The first flow path 430 may be formed at the lower end of the first sidewall 130, and for this purpose, the lower end of the first sidewall 130 is configured to be stepped inward.

[0215] The third flow path 141 can be configured such that a portion of the outer surface of the second sidewall 140 is stepped inward. That is, the outer surface of the second sidewall 140 is configured to be recessed inward in the portion forming the third flow path 141.

[0216] The third flow path 141 can be formed throughout the entire interval in the front-back direction (first direction X) of the second sidewall 140. The third flow path 141 is connected to the second inclined unit 142.

[0217] As a result, when the second sidewall 140 is in close contact with the interior wall surface, the second sidewall 140 is spaced apart from the interior wall surface at at least the point forming the third flow path 141, and the air outside and inside the nozzle can be connected through the third flow path 141.

[0218] The third flow path 141 can be formed at the lower end of the second sidewall 140, and for this purpose, the lower end of the second sidewall 140 is configured to be stepped inward.

[0219] The inner wall 150 is substantially disposed inside the nozzle head unit 100. The inner wall 150 is configured to extend along a second direction Y, which is parallel to the first axis of rotation R1. The front surface of the inner wall 150 forms a flat or curved surface. The front surface of the inner wall 150 may contact the outer surface of the rotary cleaner 400 at the rear.

[0220] The upper corner 152 of the inner wall 150 is connected to and fixed to the lower surface of the upper housing 110.

[0221] The lower corner 151 of the inner wall 150 is configured to be higher than the lower end of the rotary cleaner 400. That is, when the nozzle 10 is placed on the bottom surface B, the inner wall 150 is configured not to obstruct the space between the rotary cleaner 400 and the suction port 101, as well as the space where the rotary cleaner 400 is located, and the suction ports 101 are configured to communicate with each other through the lower end of the inner wall 150.

[0222] In one embodiment, the lower corner 151 of the inner wall 150 may be configured to be below the first axis of rotation R1.

[0223] In one embodiment, a first outflow path 102 and a second outflow path 103 are disposed in the nozzle head unit 100.

[0224] The first outflow path 102 forms a space in the intake 101 extending in a direction parallel to the first rotation axis R1. The second outflow path 103 forms a space in the intake 101 extending in the opposite direction to the first outflow path 102. That is, the first outflow path 102 and the second outflow path 103 are formed around the intake 101 on opposite sides of each other. When the first outflow path 102 is located on the left side of the intake 101, the second outflow path 103 is located on the right side of the intake 101.

[0225] The first outflow path 102 and the second outflow path 103 form a path for guiding foreign objects to the suction port 101.

[0226] The first outflow path 102 and the second outflow path 103 can be configured via the lower housing 120 and the inner wall 150. The front surface of the lower housing 120 can form the rear wall surface of the first outflow path 102 and the second outflow path 103, and the lower surface of the rear portion of the inner wall 150 can form the upper wall surface of the first outflow path 102 and the second outflow path 103.

[0227] Based on the second direction Y, the first outlet flow path 102 and the second outlet flow path 103 have sufficient length to outlet foreign objects into the suction port 101. For this purpose, based on the second direction Y, the length of the first outlet flow path 102 can be more than 1 / 4 or 1 / 3 of the length of the rotary cleaner 400. For this purpose, based on the second direction Y, the length of the second outlet flow path 103 can be more than 1 / 4 or 1 / 3 of the length of the rotary cleaner 400.

[0228] In one embodiment, the rear side of the rotary cleaner 400 is exposed to the inlet 101, the first outlet flow path 102, and the second outlet flow path 103 in a region below the first rotation axis R1.

[0229] In one embodiment, based on the second direction Y, the total length of the first outflow path 102, the suction port 101, and the second outflow path 103 can be equal to or greater than the length of the rotary cleaner 400.

[0230] In another embodiment, based on the second direction Y, the total length of the first outflow path 102, the suction port 101, and the second outflow path 103 can be slightly less than the length of the rotary cleaner 400.

[0231] Figure 9 This is a diagram showing the rotary cleaner 400.

[0232] Figure 10a This is a diagram showing the core 410 of the rotary cleaner 400.

[0233] Figure 10b and Figure 10c Each of these is a diagram showing the unfolded view of the outer peripheral surface layer 415 that constitutes the rotary cleaner 400.

[0234] Figure 10d It is shown Figure 10c A diagram showing the cross-section of the outer peripheral surface layer 415.

[0235] Figure 11a It shows Figure 9 The B-B' section, Figure 11b It shows Figure 9 The C-C' section, Figure 11c It shows Figure 9 The D-D' section.

[0236] Figure 12a This is a diagram showing a rotary cleaner 400 according to an embodiment. Figure 12b It is shown Figure 12a Side view of the 400 rotary cleaner.

[0237] The rotary cleaner 400 is rotatably connected to the mouthpiece head unit 100 based on a first rotation axis R1 parallel to the left-right direction. The rotary cleaner 400 is located in front of the suction port 101.

[0238] The rotary cleaner 400 is configured to include a core 410, a fluff 420, and a first flow path 430.

[0239] The core 410 is configured as a cylindrical shape with the first axis of rotation R1 as its central axis. The cross-section (outer peripheral surface) of the core 410 can be configured to be constant in the second direction Y.

[0240] The core 410 may be made of a relatively hard material, and the core 410 may be configured to include plastic and / or metal materials.

[0241] The fluff 420 is attached to the outer peripheral surface of the core 410 to contact the bottom surface.

[0242] Compared to the core 410, the fluff 420 can be made of a sufficiently soft and fluffy material. When the rotary cleaner 400 rotates and contacts the bottom surface, the shape of the core 410 can be maintained, and the shape of the fluff 420 can be changed when the fluff 420 contacts the bottom surface.

[0243] The fluffy material 420 is configured to include at least one of a brush and a fabric.

[0244] In embodiments of the present invention, "fabric" refers to a product made from fibers as raw materials. Fabrics may include materials such as yarn types, woven fabrics, knitted fabrics, lace, mesh, felt, cotton, paper, etc., and products made from these materials.

[0245] The brush described in the embodiments of the present invention can be configured in the form and material of a conventional brush. The brush can be composed of combinations of bristles, combinations of short threads, combinations of fibers, combinations of fine cords, combinations of filaments, or combinations of fine needles. Except where specifically defined as fibers, the term "fiber" as described below can be replaced by bristles, threads, cords, filaments, and / or needles.

[0246] The fluffy material 420 can be made of brushes, fabric, or a combination of brushes and fabrics.

[0247] In one embodiment, the fluff 420 may be made of flannel.

[0248] When the fluff 420 is made of a brush, the fibers 421 constituting the fluff 420 (brush) are arranged to protrude radially on the outer peripheral surface of the core 410.

[0249] In the bulk 420, each fiber 421 can be configured such that each fiber 421 is tightly embedded. In one embodiment, each fiber 421 can be embedded tightly enough that at least a portion of each fiber contacts other adjacent fibers 421. In another embodiment, the spacing between the fibers 421 can be embedded tightly enough to be equal to or less than the diameter of each fiber 421.

[0250] The diameter of each fiber 421 constituting the fluff 420 (brush) can be configured differently. For example, the diameter of the fibers 421 constituting the fluff 420 can be configured to various sizes ranging from a few μm to several hundred μm.

[0251] The fluff 420 is configured to have a predetermined thickness (radial thickness of the rotary cleaner 400). The fluff 420 can be configured to have a predetermined thickness range throughout the area.

[0252] The first flow path 430 forms a space as a groove (valve) on the outer peripheral surface of the rotary cleaner 400.

[0253] The first flow path 430 forms a space passing through the fluff 420.

[0254] The first flow path 430 may be the space that excludes the fibers 421 that constitute the fluff 420.

[0255] In embodiments of the present invention, the entire outer peripheral surface of the rotary cleaner 400, except for the first flow path 430, may be covered with fluff 420. That is, in the configuration constituting the outer peripheral surface of the rotary cleaner 400, only the first flow path 430 and the fluff 420 may exist.

[0256] The first flow path 430 can be formed from the left end to the right end of the rotary cleaner 400.

[0257] The longitudinal direction of the first flow path 430 can be configured to be inclined relative to the first rotation axis R1. In one embodiment, the first flow path 430 can be configured in a spiral shape. That is, the first flow path 430 can have a spiral shape around the first rotation axis R1.

[0258] In the rotary cleaner 400 according to an embodiment of the present invention, the first flow path 430 is constituted by a line. That is, all the first flow paths 430 formed on the outer peripheral surface of the rotary cleaner 400 are configured, for example, in the form of a line, wherein the parts are not separated.

[0259] The first flow path 430 includes a first boundary surface 431 and a second boundary surface 432.

[0260] The first boundary surface 431 is the surface that forms the boundary between the first flow path 430 and the fluff 420. The first boundary surface 431 is configured in a spiral shape.

[0261] The second boundary surface 432 is the surface on the opposite side of the first boundary surface 431 that forms the boundary between the fluff 420 and the first flow path 430. The second boundary surface 432 is also configured in a spiral shape.

[0262] Based on the rotation direction of the rotary cleaner 400, the second boundary surface 432 is located behind the first boundary surface 431.

[0263] In an embodiment of the invention, the rotary cleaner 400 may be configured to rotate in a rolling manner toward the front of the nozzle 10. When viewed from the left side of the nozzle 10, the rotary cleaner 400 may be configured to rotate counterclockwise, and when viewed from the right side of the nozzle 10, the rotary cleaner 400 may be configured to rotate clockwise.

[0264] The rotation of the rotary cleaner 400 can quickly move foreign objects located on the front bottom surface of the rotary cleaner 400 to the rear space of the rotary cleaner 400 (specifically, the suction port 101).

[0265] In one embodiment, when viewed in cross-section of the rotary cleaner 400, the first boundary surface 431 and the second boundary surface 432 are configured to be perpendicular to the outer peripheral surface of the core 410. That is, in cross-section of the rotary cleaner 400, the first boundary surface 431 and the second boundary surface 432 are formed along the radial direction of the rotary cleaner 400.

[0266] The first boundary surface 431 and the second boundary surface 432 are configured such that when a suction force (or negative pressure) is applied along the first flow path 430, the suction force (or negative pressure) can be concentrated only on the first flow path 430 without deviating from the first flow path 430, and furthermore, foreign objects moving through the first flow path 430 can move quickly and efficiently along the path formed by the first flow path 430.

[0267] According to an embodiment of the present invention, the rotary cleaner 400 of the vacuum cleaner 1 can be configured to have a size, shape, etc. suitable for adsorbing and conveying foreign objects, and further, the first flow path 430 of the rotary cleaner 400 needs to be configured to have the most suitable size, shape, etc., the first flow path 430 serving as a channel through which suction (or negative pressure) is applied and foreign objects move.

[0268] By taking into account this point, in an embodiment of the invention, the interval between the inner end of the first boundary surface 431 (the portion closest to the core 410) and the inner end of the second boundary surface 432 (the portion closest to the core 410) can be configured to be three to four times the height of the first boundary surface 431.

[0269] Furthermore, the outer diameter of the core 410 can be configured in the range of 35 mm to 40 mm, and the length can be configured in the range of 210 mm to 230 mm. In one embodiment, the outer diameter of the core 410 can be configured to be approximately 38 mm, and the length can be configured to be approximately 222 mm.

[0270] Furthermore, the width (internal width, d3) of the first flow path 430 can be configured in the range of 15 mm to 25 mm, and the depth d4 can be configured in the range of 3 mm to 7 mm. In one embodiment, the width (internal width, d3) of the first flow path 430 can be configured to approximately 21 mm, and the depth d4 can be configured to approximately 6 mm.

[0271] When the width d3 and depth d4 of the first flow path 430 are too large, the area of ​​the fluff 420 is relatively reduced, and the adsorption and transfer of dust by the fluff 420 may deteriorate, and the suction force may be concentrated on the first flow path 430. Furthermore, when the width and depth of the first flow path 430 are too small, it may be difficult to transfer foreign objects through the first flow path 430, or it may take too long to clean. In embodiments of the present invention, the first flow path 430 is configured as described above to solve this problem.

[0272] The width and depth of the first flow path 430 can be configured to be constant in its longitudinal direction.

[0273] As described above, the first flow path 430 and the first boundary surface 431 and the second boundary surface 432, which are the two surfaces of the first flow path 430, can be configured in a spiral shape. In embodiments of the present invention, the first flow path 430 can be configured in a spiral shape such that the rotary cleaner 400 rotates once, or it can be configured in a spiral shape such that the rotary cleaner 400 rotates slightly less than once, and this will be described below.

[0274] In one embodiment, the angle between a first normal plane S1 intersecting the front end of the first boundary surface 431 on the normal plane of the outer peripheral surface of the rotary cleaner 400 and a second normal plane S2 intersecting the rear end of the second boundary surface 432 on the normal plane of the outer peripheral surface of the rotary cleaner 400 can be configured to be from 0° to 45° (see [link to documentation]). Figure 12a and Figure 12b ).

[0275] The first boundary surface 431 includes a first front end portion 431a and a first rear end portion 431b forming two ends. The first front end portion 431a is the portion that forms the front end of the first boundary surface 431 based on the rotation direction of the rotary cleaner 400. The first rear end portion 431b is the portion that forms the rear end of the first boundary surface 431 based on the rotation direction of the rotary cleaner 400.

[0276] The second boundary surface 432 includes a second front end portion 432a and a second rear end portion 432b forming two ends. The second front end portion 432a is the portion that forms the front end of the second boundary surface 432 based on the rotation direction of the rotary cleaner 400. The second rear end portion 432b is the portion that forms the rear end of the second boundary surface 432 based on the rotation direction of the rotary cleaner 400.

[0277] The reference line RL connecting the first front end 431a and the second rear end 432b can be configured to be parallel to the first axis of rotation R1 (see...). Figure 9 ).

[0278] The rotary cleaner 400 can be configured by attaching an outer peripheral surface layer 415 to the outer peripheral surface of the core 410. The outer peripheral surface layer 415 can be flattened before being attached to the core 410.

[0279] The outer peripheral surface layer 415 may be composed of a base region 417 and a fluffy region 420' connected to the base region 417 for fixation.

[0280] The base region 417 can be configured as a thin cloth, mesh, or film. The area of ​​the base region 417 can be configured to correspond to (be similar to) the area of ​​the outer peripheral surface of the core 410.

[0281] Fluffy area 420' forms fluffy 420.

[0282] The fluffy region 420' is composed of fibers 421 and is formed on the outer surface of the base region 417. The fluffy region 420' can be integrally disposed with the base region 417 or disposed separately from the base region 417 and then fixedly connected to the base region 417.

[0283] The outer peripheral surface layer 415 may be configured to include a first flow path region 430' forming a first flow path 430. The first flow path region 430' may be a region (space) outside the base region 417 where no fluff region 420' is formed.

[0284] The outer peripheral surface layer 415 together with the fluff 420 forms a first flow path 430, while the inner surface of the base region 417 is fixedly connected to the outer peripheral surface of the core 410.

[0285] In one embodiment, the outer peripheral surface layer 415 may be configured to exclude the first flow path region 430' and include only the fluff region 420', or to include only the base region 417 and the fluff region 420'.

[0286] In one embodiment, the flattened outer peripheral surface layer 415 can be configured in a rectangular form. In this case, the length of the horizontal width of the outer peripheral surface layer 415 can be configured to be equal to the length d2 of the rotary cleaner 400, and the length of the vertical side of the outer peripheral surface layer 415 can be configured to be equal to the circumferential length d1 of the outer peripheral surface of the core 410.

[0287] When the outer peripheral surface layer 415 is attached to the outer peripheral surface of the core 410, the outer peripheral surface layer 415 can form a first flow path 430 together with the fluff 420, and at the same time the bottom horizontal side E1 and the top horizontal side E2 of the outer peripheral surface layer 415 are connected to each other.

[0288] Furthermore, when the first flow path region 430' is arranged in a straight line in the outer peripheral surface layer 415 which is arranged in a rectangular form, the first flow path region 430' is arranged to intersect the outer peripheral surface layer 415 in the diagonal direction.

[0289] As a result, the fluffy region 420' is divided into two regions around the first flow path region 430'. That is, the fluffy region 420' is divided into a triangular first fluffy region 420a and a triangular second fluffy region 420b (see...). Figure 10b ).

[0290] In another embodiment, the flattened outer peripheral surface layer 415 can be configured in the form of a parallelogram. In this case, the relatively longer length on one side of the outer peripheral surface layer 415 can be configured to be equal to the length of the first flow path 430 (the length of the first flow path region 430'), and the relatively shorter length on the other side of the outer peripheral surface layer 415 can be configured to be equal to the circumferential length d1 of the outer peripheral surface of the core 410. When the outer peripheral surface layer 415 is attached to the outer peripheral surface of the core 410, the outer peripheral surface layer 415 can form the first flow path 430 together with the fluff 420, while the relatively longer sides E3 and E4 are connected to each other.

[0291] Furthermore, in this configuration, the first flow path region 430' can be formed along one corner of the fluff region 420'. That is, the fluff region 420' can be configured as a parallelogram, and the first flow path region 430' is also configured as a long parallelogram, with the first flow path region 430' formed at the edge of the fluff region 420'.

[0292] Therefore, when the outer peripheral surface layer 415 is configured in the form of a parallelogram, the fluff region 420' can be configured in one region, thus the fluff region 420' is advantageous for manufacturing the outer peripheral surface layer 415, and when the outer peripheral surface layer 415 is attached to the core 410, problems such as partial separation or partial overlap of the fluff 420 can be prevented.

[0293] Figure 13 Each of (a), (b), (c), (d), (e), (f), (g), and (h) is a schematic diagram showing a view of the rotating cleaner 400 rotating in contact with the floor surface B and the front wall surface W1.

[0294] Figure 14 Each of (a), (b), (c) and (d) is a schematic diagram showing the direction and path of air movement as viewed from the bottom of the nozzle 10 in contact with the front wall surface.

[0295] When the rotating cleaner 400 is viewed along the second direction Y, the first boundary surface 431 is shown as a projection in the second direction Y, and in this case, the first boundary surface 431 is substantially configured as a circle. However, the first boundary surface 431 does not form a perfect circle, and the first front end 431a and the first rear end 431b, which are the two ends of the first boundary surface 431, form a circle in a slightly spaced manner from each other.

[0296] Furthermore, when the rotating cleaner 400 is viewed along the second direction Y, the second boundary surface 432 is shown as a projection in the second direction Y, and in this case, the second boundary surface 432 is substantially configured as a circle. However, the second boundary surface 432 does not form a perfect circle, and the second front end 432a and the second rear end 432b, which are the two ends of the second boundary surface 432, form a circle in a slightly spaced manner from each other.

[0297] However, when the rotating cleaner 400 is viewed along the second direction Y, the first front end 431a and the second rear end 432b may be formed at the point where the first front end 431a and the second rear end 432b match each other.

[0298] The lower end of the rotary cleaner 400 contacts the bottom surface in the second direction Y. The first space A1 and the second space A2 are blocked by the rotary cleaner 400. The first space A1 is the space directly above the front bottom of the rotary cleaner 400, and the second space A2 is the space directly above the rear bottom of the rotary cleaner 400. The second space A2 corresponds to the space where the suction port 101, the first outlet flow path 102, and the second outlet flow path 103 are located.

[0299] As the nozzle 10 moves forward, the rotary cleaner 400 moves forward together with the nozzle 10, while rolling and rotating forward. As a result, foreign objects in the first space A1 can be adsorbed on the outer peripheral surface of the rotary cleaner 400 or swept to move toward the second space A2 and sucked into the suction port 101.

[0300] The vacuum cleaner 1 will also be configured to suck up foreign objects such as dust that accumulates in the corners of the wall surface. That is, even when the nozzle 10 contacts the front wall surface and stops moving forward, the foreign objects in the first space A1 should move toward the second space A2 and then be sucked into the suction port 101.

[0301] Since the first flow path 430 is formed on the outer peripheral surface of the rotary cleaner 400 according to an embodiment of the present invention, the first space A1 and the second space A2 are effectively connected to each other through the first flow path 430. Therefore, the suction (or negative pressure) of the second space A2 is well transmitted to the first space A1, and foreign objects located in the first space A1 are well moved toward the second space A2.

[0302] This will be described below.

[0303] When the nozzle 10 is in close contact with the front wall surface W1, the suction force (or negative pressure) acting at the suction port 101 is mainly transmitted to the first space A1 through the first flow path 430. In this case, due to the negative pressure formed on the first space A1, external air is introduced into the center from the left and right sides of the first space A1 (first tilting unit 132 and second tilting unit 142). Smoothly introducing external air into the first space A1 helps the suction force (negative pressure) act on the first flow path 430.

[0304] As described above, the inner wall 150 can be in close contact with the rear surface of the rotary cleaner 400.

[0305] When the second rear end portion 432b is located at the rearmost side of the rotary cleaner 400, the line connecting the second rear end portion 432b on the first rotation axis R1 is configured to be parallel to the horizontal direction, and the second front end portion 432a is located at a point behind the rotary cleaner 400 below the second rear end portion 432b (see...). Figure 13 (a)). The second rear end portion 432b can be located above the bottom of the inner wall 150, and the second front end portion 432a can be located below the bottom of the inner wall 150. In this case, the suction formed at the suction port 101 can be transmitted to the first flow path 430 at the lower part, and foreign objects in the first space A1 can move to the second space A2 and be sucked into the suction port 101. That is, the direction of the suction in the first flow path 430 is consistent with the rotation direction of the rotary cleaner 400.

[0306] The rotary cleaner 400 rotates (counterclockwise), and in the case that the second rear end 432b rotates 45° counterclockwise (see...). Figure 13 (b)) In the case of the second rear end 432b rotating 90° (see Figure 13 (c) and the case where the second rear end 432b is rotated 135° (see Figure 13 (d) and the case where the second rear end 432b is rotated 180° (see Figure 13 (e) The suction force formed at the suction inlet 101 can be transmitted to the first flow path 430 at the lower part, and foreign objects in the first space A1 can move to the second space A2 and be sucked into the suction inlet 101 through the first flow path 430. That is, the direction of the suction force in the first flow path 430 is consistent with the rotation direction of the rotary cleaner 400.

[0307] With the rotary cleaner 400 further rotated (counterclockwise) and the second rear end 432b rotated 225° (see...), Figure 13(f)) A portion of the suction force formed at the inlet 101 is transmitted to the first flow path 430 at the lower part, and another portion of the suction force formed at the inlet 101 is transmitted to the first flow path at the upper part.

[0308] In this case, part of the direction of suction in the first flow path 430 is in the same direction as the rotation of the rotary cleaner 400, while another part is opposite to the rotation of the rotary cleaner 400. That is, there is a partial conversion in the direction of suction.

[0309] With the rotary cleaner 400 further rotated (counterclockwise) and the second rear end 432b rotated 225° (see...), Figure 13 (g)), the second rear end 432b contacts the bottom surface, and the suction force formed at the suction port 101 is not transmitted to the first flow path 430 at the lower part, but at the upper part. That is, the direction of the suction force in the first flow path 430 is opposite to the rotation direction of the rotary cleaner 400.

[0310] With the rotary cleaner 400 further rotated (counterclockwise) and the second rear end 432b rotated 315° (see...), Figure 13 (f)) A portion of the suction force formed at the inlet 101 is transmitted to the first flow path 430 at the lower part, and another portion of the suction force formed at the inlet 101 is transmitted to the first flow path at the upper part.

[0311] In other words, part of the suction force in the first flow path 430 is in the same direction as the rotation direction of the rotary cleaner 400, while the other part is in the opposite direction to the rotation direction of the rotary cleaner 400.

[0312] Thus, through the vacuum cleaner 1 and the rotary cleaner 400 according to the embodiment of the present invention, the first space A1 and the second space A2 are connected to each other through the first flow path 430 at all rotation angles of the rotary cleaner 400, so that foreign objects in the first space A1 can be effectively and quickly sucked into the suction port 101.

[0313] Furthermore, the direction of suction acting in the first flow path 430 is switched in a portion of the rotating section of the rotary cleaner 400. As a result, suction can act in different directions in the first space A1, and turbulence can be frequently generated in the first space A1, increasing the mobility of dust in the first space. Based on this feature, foreign objects in the first space A1 can be introduced into the suction port 101 more quickly and effectively through the first flow path 430.

[0314] Figure 15Each of (a), (b), (c) and (d) as a diagram showing the nozzle 10 in contact with the front wall surface W1 and the left wall surface W2 as viewed from the bottom is a schematic diagram showing the direction and path of air movement.

[0315] Figure 16 Each of (a), (b), (c) and (d) is a diagram showing the nozzle 10 in contact with the front wall surface W1 and the right wall surface W3 as viewed from the bottom, and is a schematic diagram showing the direction and path of air movement.

[0316] When the nozzle 10 is in close contact with the front wall surface W1 and the left wall surface W2, the suction force (or negative pressure) acting on the suction port 101 is mainly transmitted to the first space A1 through the first flow path 430. In this case, by forming a negative pressure on the first space A1, external air is introduced into the center from the left and right sides of the first space A1.

[0317] External air is introduced into the first space A1 through the second flow path 131 and the first inclined unit 132 on the left side of the nozzle 10, and external air is introduced into the first space A1 through the second inclined unit 142 on the right side of the nozzle 10.

[0318] Specifically, the external air introduced through the second flow path 131 and the first inclined unit 132 on the left side of the nozzle 10 increases the mobility (movement) of foreign objects located at the left corner of the first space A1 (the corner formed by the front wall surface, the left wall surface and the bottom surface), and helps to draw in foreign objects through the first flow path 430.

[0319] When the nozzle 10 is in close contact with the front wall surface W1 and the right wall surface W3, the suction force (or negative pressure) acting on the suction port 101 is mainly transmitted to the first space A1 through the first flow path 430. In this case, by forming a negative pressure on the first space A1, external air is introduced into the center from the left and right sides of the first space A1.

[0320] External air is introduced into the first space A1 through the third flow path 141 and the second inclined unit 142 on the right side of the nozzle 10, and external air is introduced into the first space A1 through the first inclined unit 132 on the left side of the nozzle 10.

[0321] Specifically, the external air introduced through the third flow path 141 and the second inclined unit 142 on the right side of the nozzle 10 increases the mobility (movement) of foreign objects located at the right corner of the first space A1 (the corner formed by the front wall surface, the left wall surface and the bottom surface), and helps to draw in foreign objects through the first flow path 430.

[0322] Smoothly introducing outside air into the first space A1 helps the suction (negative pressure) act on the first flow path 430.

[0323] Figure 17 The side view of the nozzle 10 is a schematic diagram showing the view of the front wall surface sensed by the distance sensor 500.

[0324] Figure 18a , Figure 18b and Figure 18c Each of the diagrams shown as an illustration of the nozzle 10 viewed from above is a schematic illustration of a view of the front wall surface sensed by the distance sensor 500.

[0325] In one embodiment, the vacuum cleaner 1 is configured to include a distance sensor 500.

[0326] Distance sensor 500 is connected to nozzle 10 to sense the distance from a wall surface located in front of nozzle 10.

[0327] A distance sensor 500 is formed in the nozzle 10 to sense the relative distance to an object (e.g., a wall surface) located in front of the nozzle 10. The distance sensor 500 can be configured differently within a range of relative distances between the point where the distance sensor 500 is formed and the wall surface.

[0328] The distance sensor 500 can be configured as an optical sensor or an infrared sensor, and can be a distance sensor such as a lidar sensor. For example, the distance sensor 500 can be configured to emit electromagnetic energy (e.g., visible light, infrared light, or radio waves) and detect the reflection of the emitted energy.

[0329] The distance sensor 500 can be configured to include a light-emitting unit that emits illumination light and a light-receiving unit that receives reflected light incident on it. The distance sensor 500 can be configured as a ToF sensor.

[0330] Distance sensor 500 senses the distance d5 from distance sensor 500 to the front wall surface W1 (which can be the distance from the wall surface in the horizontal direction or the distance from the wall surface in the inclined direction).

[0331] In one embodiment, the rotational speed of the first motor 31 is configured to increase when the distance value sensed by the distance sensor 500 is equal to or less than a reference value.

[0332] The distance value sensed by the distance sensor 500 is transmitted to the control unit 38, and the control unit 38 controls the rotational speed of the first motor 31 based on the distance value and a reference value. The control unit 38 can control the first motor 31 such that when the distance value sensed by the distance sensor 500 is equal to or less than the reference value, the rotational speed of the first motor 31 increases. For example, when the distance value is equal to or less than the reference value, the control unit 38 can immediately control the rotational speed of the first motor 31 by 50% or double the rotational speed.

[0333] In an embodiment of the present invention, when the distance value is greater than the reference value, that is, when the power W is 40W under normal use of the vacuum cleaner 1, and when the distance value is equal to or less than the reference value, the power of the vacuum cleaner can be configured to 60W by increasing the rotation speed of the first motor 31.

[0334] In an embodiment of the invention, the distance sensor 500 accurately measures the relative distance to the front wall surface W1 and determines its formation position in order to more accurately predict the movement time and distance of the nozzle 10 until the nozzle 10 contacts the front wall and stops moving after the distance sensor 500 senses the front wall surface W1.

[0335] When the first axis of rotation R1 is parallel to the front wall surface W1, the distance from the front wall sensed by the distance sensor 500 can be equal or similar in the entire cross section of the nozzle 10 along the second direction Y.

[0336] When the first axis of rotation R1 is not parallel to the front wall surface W1, for example, when the first sidewall 130 is closer to the front wall than the second sidewall 140, the distance to the front wall surface W1 sensed by the distance sensor 500 is longer than the distance between the first sidewall 130 and the front wall surface W1, and shorter than the distance between the second sidewall 140 and the front wall surface W1. However, the entire front portion of the nozzle 10 should contact the front wall to prevent the nozzle 10 from advancing forward by contacting the front wall surface W1.

[0337] When the first axis of rotation R1 is not parallel to the front wall surface W1, for example, when the second sidewall 140 is closer to the front wall surface W1 than the first sidewall 130, the distance to the front wall surface W1 sensed by the distance sensor 500 is shorter than the distance between the first sidewall 130 and the front wall surface W1, and also shorter than the distance between the second sidewall 140 and the front wall surface W1. However, even in this case, the entire front portion of the nozzle 10 should contact the front wall to prevent the nozzle 10 from advancing forward by contacting the front wall surface W1.

[0338] In order to more accurately predict the movement time and distance of the nozzle 10 in all directions facing the nozzle 10 until it stops advancing the nozzle 10 through the front wall surface W1, the distance sensor 500 can be located above the center of the nozzle 10 in the left-right direction.

[0339] Furthermore, with this in mind, the distance sensor 500 can be attached to the upper side of the mouthpiece neck unit 200 at a point above the top of the mouthpiece head unit 100.

[0340] In order to install the distance sensor 500 in the nozzle 10, a housing 520 and a PCB 510 for fixing the distance sensor 500 can be provided in the nozzle 10, and a small hole 221 can be formed in the nozzle 10 for the electromagnetic energy (visible light, infrared or radio waves) of the distance sensor 500 to pass through.

[0341] In one embodiment, the reference value is configured to be longer than the distance from the tip of the nozzle 10 to the distance sensor 500. That is, the distance sensor 500 senses the front wall surface W1 before the tip of the nozzle 10 contacts the front wall surface W1, and further, the control unit 38 configures the rotational speed of the first motor 31 to increase.

[0342] The distance from the tip of the nozzle 10 to the distance sensor 500 can be in the range of 50mm to 70mm, and the reference value can be in the range of 120mm to 140mm. In one embodiment, the distance from the tip of the nozzle 10 to the distance sensor 500 can be approximately 65mm, and the reference value can be 130mm.

[0343] When the control unit 38 determines that the distance value sensed by the distance sensor 500 is equal to or less than a reference value, the control unit 38 can immediately increase the rotational speed of the first motor 31, resulting in an instantaneous increase in suction within the cleaner body 30. However, since the first motor 31 is located within the cleaner body 30, and the cleaner body 30 is connected to the nozzle 10 via the connecting tube 20, a predetermined time is required to transmit the increased suction of the cleaner body 30 to the nozzle 10 (the suction inlet 101 of the nozzle 10). In one embodiment, the increased suction of the cleaner body is transmitted to the nozzle 10 from the time the rotational speed of the first motor 31 increases, and the time required to increase the suction of the nozzle 10 is approximately 0.23 seconds (suction change time).

[0344] Meanwhile, when using a regular vacuum cleaner, the moving speed of the nozzle 10 (the speed at which the nozzle is pushed and moved by the user) can be approximately 500 mm / s.

[0345] Therefore, when the suction force of the nozzle 10 changes in time (0.23s) and the moving speed of the nozzle 10 is 500mm / s, the moving distance of the nozzle 10 becomes 115mm until the change (increase) of the suction force of the nozzle 10 is completed.

[0346] In this case, as described above, when the reference value is 130mm, the suction force of the nozzle 10 can be increased before the front end of the nozzle 10 just contacts the front wall surface, and foreign objects can be sucked into the nozzle 10 by the increased suction force.

[0347] When the nozzle 10 is reversed and spaced apart from the front wall surface W1, the distance sensor 500 can sense the reverse rotation of the nozzle 10, and in this case, the control unit 38 can reduce the speed of the first motor 31 again.

[0348] In one embodiment, the rotational speed of the second motor 470 is configured to increase when the distance value sensed by the distance sensor 500 is equal to or less than a reference value. When the distance sensor 500 senses the front wall, the control unit 38 increases the rotational speed of the first motor 31 to increase the suction at the suction inlet 101, and further increases the rotational speed of the second motor 470 to increase the rotational speed of the rotary cleaner 400.

[0349] As the rotational speed of the rotary cleaner 400 increases, foreign objects can move more quickly through the first flow path 430 and can perform uniform cleaning more quickly throughout the entire area of ​​the first space A1 in the second direction Y.

[0350] When the nozzle 10 is reversed and spaced apart from the front wall surface W1, the distance sensor 500 can sense the reverse rotation of the nozzle 10, and in this case, the control unit 38 can reduce the speed of the second motor 470 again.

[0351] Figures 19 to 22 These are cross-sectional views of the rotary cleaner 400 according to different embodiments.

[0352] The fibers 421 constituting the bulk 420 can be arranged to protrude radially on the outer peripheral surface of the core 410. As a result, the bulk 420 can form a brush-like structure surrounding the outer peripheral surface of the core 410.

[0353] In embodiments of the invention, fiber 421 may be made of natural fibers and / or synthetic fibers. Fiber 421 is configured such that its length is greater than its diameter.

[0354] The individual fibers 421 constituting the fluff 420 may be configured to have the same or similar diameter and length.

[0355] In the vacuum cleaner 1 according to an embodiment of the present invention, the fluff 420 may be configured to be non-wettable or normally non-wettable. In embodiments of the present invention, the fluff 420 may be configured to have "water-resistant", "water-repellent", or "water-resistant" properties.

[0356] Therefore, fluffy material 420 can be configured as follows.

[0357] In one embodiment, the fibers 421 constituting the bulk 420 may be configured to include a water-repellent or water-repellent agent, or may be configured to be coated with a water-repellent or water-repellent agent. In another embodiment, the fibers 421 constituting the bulk 420 may be made of a hydrophobic plastic.

[0358] Water repellents can be composed of fluorinated, non-fluorinated, or silicone-based water repellents. They can also be composed of water-based or oil-based water repellents.

[0359] Water repellents can be made from siloxane alkoxides, aluminum alkoxides, zirconium alkoxides, or titanium alkoxides.

[0360] Waterproofing agents can be formulated to include beeswax, wax, linseed oil, turpentine, or castor oil, or can be made from mixtures thereof.

[0361] In one embodiment, when the bulk 420 is configured by combining fibers 421, each fiber 421 constituting the bulk 420 may be coated with a water-repellent or water-repellent agent.

[0362] When the fluffy material 420 is composed of an assembly of bristles, each bristle of the fluffy material 420 may be coated with a water-repellent or waterproof agent. When the fluffy material 420 is composed of an assembly of threads, each thread of the fluffy material 420 may be coated with a water-repellent or waterproof agent. When the fluffy material 420 is composed of an assembly of cords, each cord of the fluffy material 420 may be coated with a water-repellent or waterproof agent. When the fluffy material 420 is composed of an assembly of filaments, each filament of the fluffy material 420 may be coated with a water-repellent or waterproof agent. Alternatively, the fluffy material 420 may be composed of an assembly of needles, each needle of the fluffy material 420 may be coated with a water-repellent or waterproof agent.

[0363] When the fibers 421 constituting the bulk 420 are coated with a water-repellent or waterproofing agent, a coating 422 (a coating formed by the water-repellent or waterproofing agent) is formed on the outside of each fiber 421.

[0364] The coating 422 formed on the outside of the fiber 421 prevents water from penetrating into the fiber 421 and prevents water from leaking between the fibers 421.

[0365] In one embodiment, the fluff 420 is made of polyamide fibers, polyester fibers, or polypropylene fibers, or a combination thereof.

[0366] In one embodiment, the fibers 421 constituting the bulk 420 may be made of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), nylon, or silicone. In this case, the fibers 421 may be configured in the form of bristles. Each fiber 421 may be configured to project straight out in a radial direction on the outer peripheral surface of the core 410. Furthermore, each fiber 421 may be configured to have a diameter of approximately 0.01 mm to 2 mm. The individual fibers 421 may be in close contact with each other or may be spaced apart from each other.

[0367] The fibers 421 constituting the fluffy material 420 can be configured to be elastic.

[0368] The fibers 421 constituting the bulk 420 are configured to be elastic, thus enabling each fiber 421 to maintain its shape well and removing water from the bulk 420 to easily achieve dehydration.

[0369] When each fiber 421 constituting the bulk 420 can be made of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), nylon, or silicone, each fiber 421 can be configured to have a diameter of approximately 0.2 mm to 2 mm. When the bulk 420 is configured to include fibers 421, the fibers 421 of the bulk 420 can be elastic, and when an external force is applied to the bulk 420, the fibers 421 can bend, and when the applied external force is removed, the fibers 421 can elastically return to their original state. Furthermore, in this case, water will not penetrate into the fibers 421, and the fibers 421 are waterproof.

[0370] As a result, the fluff 420 is not well contaminated by water, and water can be prevented from being absorbed into the fluff 420 of the rotary cleaner 400. Even when the fluff is contaminated by water, the water can be effectively removed.

[0371] In one embodiment, the bulk 420 may be configured to include an antimicrobial agent. Each fiber 421 constituting the bulk 420 may be configured to include an antimicrobial agent.

[0372] In embodiments of the present invention, inorganic antimicrobial agents may be used.

[0373] Antimicrobial agents can be formulated to include metallic components with antiviral properties. For example, antimicrobial agents can be formulated to include gold, silver, platinum, copper, zinc, lead, tin, bismuth, cadmium, chromium, mercury, nickel, and / or cobalt.

[0374] Antimicrobial agents can be formulated to include calcium powder.

[0375] Antimicrobial agents can be formulated to include zeolites, calcium phosphate, or zirconium phosphate. Antimicrobial agents can also be made from guanidine compounds.

[0376] Antimicrobial agents can be included in and manufactured into the fibers that make up the fluffy fabric.

[0377] Antimicrobial agents can be attached to the brush using an adhesive resin.

[0378] The bulk 420 and the fibers 421 constituting the bulk 420 are configured to include an antimicrobial agent to effectively prevent the proliferation of bacteria in the bulk 420.

[0379] In one embodiment, the fluffy material 420 can be divided into an inner layer 420c and an outer layer 420d.

[0380] The inner layer 420c is the layer located on the inner side of the bulk 420. The inner layer 420c is the layer connected to the core 410.

[0381] The outer layer 420d is the outermost layer in the fluff 420. The outer layer 420d extends from the inner layer 420c to form the surface of the brush.

[0382] In one embodiment, the thickness of the inner layer 420c can be configured to be similar to the thickness of the outer layer 420d, and in another embodiment, the thickness of the inner layer 420c can be configured to be thicker than the thickness of the outer layer 420d. The ratio of the thickness of the inner layer 420c to the thickness of the outer layer 420d can be configured to 1:1, 2:1, 3:1, 4:1, or 5:1.

[0383] In the vacuum cleaner 1 according to an embodiment of the present invention, the inner layer 420c of the fluff 420 may be configured to have waterproof, water-repellent, and / or antimicrobial properties. For example, the inner layer 420c of the fluff 420 may be coated with a water-repellent or waterproof agent, and the inner layer 420c of the fluff 420 may be made of hydrophobic plastic fibers 421, and the inner layer 420c of the fluff 420 may be configured to include an antimicrobial agent.

[0384] When the inner layer 420c of the bulk material 420 is coated with a water-repellent or water-repellent agent, the outer layer 420d of the bulk material 420 may not be coated with a water-repellent or water-repellent agent. That is, only the fibers 421 in the inner layer 420c of the bulk material 420 may be configured to have water-repellent or water-repellent properties, or the fibers 421 constituting the inner layer 420c may be configured to have superior water-repellent or water-repellent properties than the fibers 421 constituting the outer layer 420d.

[0385] In one embodiment, coating 422 may be formed in the fibers 421 of the inner layer 420c constituting the bulk 420, while coating 422 may not be formed in the fibers 421 of the outer layer 420d constituting the bulk 420.

[0386] When the blotter 420 is contaminated with water during washing or cleaning and the water is absorbed within the blotter 420, the water can move to the outer layer 420d instead of the inner layer 420c. Since the water that moves to the outer layer 420d within the blotter 420 can easily evaporate to the outside or dehydrate, the water contaminated within the blotter 420 can be easily removed.

[0387] Furthermore, when operating the vacuum cleaner 1, centrifugal force can be applied to the fluff 420 by rotating the cleaner 400, and the water contaminated in the outer layer 420d can be effectively removed by centrifugal force.

[0388] When the fluff 420 is contaminated with water, the water moves to the outer layer 420d rather than the inner layer 420c to effectively remove the water, prevent bacteria from multiplying in the fluff 420 (inner layer 420c), and prevent the fluff 420 from deforming due to water.

[0389] In one embodiment, each fiber 421 constituting the bulk 420 can be configured such that its diameter decreases towards the apex. As a result, when the bulk 420 is contaminated with water, the water can easily move to the outer peripheral surface of the bulk 420. Since the water that has moved to the outer peripheral surface of the bulk 420 can easily evaporate to the outside or dehydrate, the water contaminated in the bulk 420 can be easily removed.

[0390] Furthermore, when operating the vacuum cleaner 1, centrifugal force can be applied to the fluff 420 by rotating the rotary cleaner 400, and the water contaminated on the outer peripheral surface of the rotary cleaner 400 can be effectively removed by centrifugal force.

[0391] Figure 23a This is a diagram showing a rotary cleaner 400 according to an embodiment, and Figure 23b It is shown Figure 23a Cross-sectional view of the rotary cleaner 400.

[0392] In one embodiment, the rotary cleaner 400 may also include a dehydration flow path 450.

[0393] The dewatering flow path 450 can be configured as a groove on the outer peripheral surface of the fluff 420. The dewatering flow path 450 forms a channel for water contaminated in the fluff 420.

[0394] Multiple dehydration flow paths 450 can be provided in the fluff 420. The corresponding dehydration flow paths 450 can be configured to be spaced apart from each other or configured to be parallel to each other. The dehydration flow paths 450 can be repeatedly arranged in the circumferential direction of the rotary cleaner 400.

[0395] The dehydration flow path 450 is formed along a direction that traverses the first flow path 430. In one embodiment, the dehydration flow path 450 may be configured to be parallel to the first rotation axis R1.

[0396] In the vacuum cleaner 1 according to an embodiment of the present invention, the dehydration flow path 450 can be configured not to be connected to the first flow path 430.

[0397] The width d11 of the dehydration flow path 450 can be configured to be greater than the diameter of the fibers 421 constituting the fluff 420 and less than the width of the first flow path 430.

[0398] When the fluff 420 is contaminated with water, the water adsorption force in the dehydration flow path 450 is lower than that in other parts of the fluff 420. Therefore, the water in the dehydration flow path 450 can be easily dehydrated and evaporated, and the water can be easily removed throughout the rotary cleaner 400.

[0399] Accordingly, water contaminated in the fluff 420 can be effectively removed through the dehydration flow path 450, and in this case, since the first flow path 430 and the dehydration flow path 450 are not connected to each other, the suction transmitted through the first flow path 430 is not distributed to the dehydration flow path 450.

[0400] Specific embodiments of the present invention have been described and illustrated above. However, the present invention is not limited to the disclosed embodiments, and those skilled in the art will understand that various modifications and transformations can be made to the embodiments to create other specific embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention is not limited by the described embodiments, but by the technical spirit disclosed in the claims.

[0401] Industrial applicability

[0402] The significant industrial applicability lies in the fact that, in the vacuum cleaner according to an embodiment of the invention, if the nozzle is in contact with the wall surface and cannot move forward, the front space of the nozzle can be connected to the suction port via a first flow path, so that foreign objects such as dust can be effectively sucked in from the edge of the wall surface.

Claims

1. A vacuum cleaner, the vacuum cleaner comprising: A suction nozzle, comprising: a suction head unit having a suction port at its bottom; and a rotary cleaner rotatably connected to the suction head unit in front of the suction port based on a first rotation axis parallel to the left-right direction; and The cleaner body has a first motor, which rotates to create suction at the inlet, and the cleaner body is connected to the nozzle. The rotating cleaner includes: A cylindrical core, with the first axis of rotation as its central axis; A fluffy material, configured to include at least one of a brush and a fabric, and attached to the outer peripheral surface of the core and configured to contact the bottom surface; and A first flow path intersects the fluffy material and has a groove shape arranged along the first axis of rotation and the inclined direction. The outer peripheral surface of the rotary cleaner, excluding the first flow path, is covered with the fluffy material, and The first flow path is configured as a single slot in the rotary cleaner and is configured to extend around the rotary cleaner once or slightly less than once.

2. The vacuum cleaner according to claim 1, wherein, The first flow path includes: A first boundary surface, which forms the boundary between the fluff and the first flow path; and A second boundary surface forms the boundary between the first flow path and the fluffy material on the opposite side of the first boundary surface, and In the cross-section of the rotary cleaner, the first boundary surface and the second boundary surface are configured to be perpendicular to the outer peripheral surface of the core.

3. The vacuum cleaner according to claim 2, wherein, The distance between the inner end of the first boundary surface and the inner end of the second boundary surface is three to four times the height of the first boundary surface.

4. The vacuum cleaner according to claim 1, wherein, The core has an outer diameter of 35 mm to 40 mm and a length of 210 mm to 230 mm, and The first flow path has a width of 15 mm to 25 mm and a depth of 3 mm to 7 mm.

5. The vacuum cleaner according to claim 1, wherein, The first flow path is configured in a spiral shape and has a constant width and depth in the longitudinal direction.

6. The vacuum cleaner according to claim 1, wherein, The first flow path includes: A first boundary surface, forming the boundary between the first flow path and the fluff, and configured in a spiral shape; and A second boundary surface, which is aligned with the first boundary surface behind it based on the rotation direction of the rotary cleaner, and forms the boundary between the first flow path and the fluff, is configured in a spiral shape. The angle between the first normal plane intersecting the front end of the first boundary surface on the normal plane of the outer peripheral surface of the rotating cleaner and the second normal plane intersecting the rear end of the second boundary surface on the normal plane of the outer peripheral surface of the rotating cleaner is 0° to 45°.

7. The vacuum cleaner according to claim 1, wherein, The first flow path includes: A first boundary surface, forming the boundary between the first flow path and the fluff, and configured in a spiral shape; and A second boundary surface, which is aligned with the first boundary surface behind it based on the rotation direction of the rotary cleaner, and forms the boundary between the first flow path and the fluff, is configured in a spiral shape. The first boundary surface includes a first front end forming a front end and a first rear end forming a rear end based on the rotation direction of the rotary cleaner. The second boundary surface includes a second front end forming a front end based on the rotation direction of the rotary cleaner and a second rear end forming a rear end. The reference line connecting the first front end and the second rear end is parallel to the first axis of rotation.

8. The vacuum cleaner according to claim 1, wherein, The suction head unit includes: A first outflow path, wherein the first outflow path forms a space at the inlet extending in a direction parallel to the first axis of rotation; and A second outflow path is formed at the inlet, creating a space extending in the opposite direction to the first outflow path. The rear side of the rotary cleaner is exposed to the suction port, the first outflow path, and the second outflow path in a region below the first axis of rotation.

9. The vacuum cleaner according to claim 1, wherein, The suction head unit includes: An upper housing, formed along a direction parallel to the first axis of rotation and including an upper cover, the upper cover covering the upper side of the rotary cleaner; The lower housing is located below the upper housing and has the suction port formed at the front end at the center in the left-right direction; A first sidewall, which shields one side surface of the rotary cleaner and is connected to the upper housing and the lower housing; A second sidewall, which shields the side surface of the rotating cleaner on the side opposite to the first sidewall, and is connected to the upper housing and the lower housing; and An inner wall is formed in a direction parallel to the first rotation axis, contacts the rotary cleaner at the rear of the rotary cleaner, the top of the inner wall is connected to the bottom of the upper housing, and the bottom angle of the inner wall is higher than the lower end of the rotary cleaner.

10. The vacuum cleaner according to claim 9, wherein, The bottom of the inner wall is lower than the first axis of rotation.

11. The vacuum cleaner according to claim 9, wherein, The front corner of the top cover is located in front of the rotating cleaner and is parallel to the first axis of rotation.

12. The vacuum cleaner according to claim 9, wherein, In the first sidewall and the second sidewall The lower front corner is slanted or configured as a slanted curve. A second flow path, step-like inward, is formed at the bottom of the outer surface of the first sidewall, and A third flow path is formed inwardly in a stepped manner at the bottom of the outer surface of the second sidewall.

13. The vacuum cleaner according to claim 1, wherein, The rotary cleaner includes: The core; and An outer peripheral surface layer, which is attached to the outer peripheral surface of the core, The outer peripheral surface layer includes: Fluffy area, the fluffy area forming the fluff; and A first flow path region, the first flow path region forming the first flow path, and When the outer peripheral surface layer is flattened, the fluffy region has a parallelogram shape, and the first flow path region is formed along one side of the fluffy region.

14. The vacuum cleaner according to claim 1, further comprising: A distance sensor, coupled to the nozzle and configured to sense the distance to a wall surface located in front of the nozzle, The rotational speed of the first motor is configured to increase when the distance value sensed by the distance sensor is equal to or less than a reference value.

15. The vacuum cleaner according to claim 14, wherein, The distance sensor is configured as an optical sensor and is located above the center of the nozzle in the left-right direction.

16. The vacuum cleaner according to claim 14, wherein, The suction nozzle includes: A connecting neck, configured as a tube and connected to the cleaner body; and A nozzle neck unit, configured as a tube and extending rearward within the nozzle head unit, is rotatably connected to the connecting neck about a second axis of rotation. The distance sensor is connected to the upper side of the mouthpiece neck unit at a point above the top of the mouthpiece head unit.

17. The vacuum cleaner according to claim 14, further comprising: A connecting tube connects the suction nozzle and the cleaner body, and The distance from the tip of the suction nozzle to the distance sensor is 50mm to 70mm, and The reference value is 120mm to 140mm.

18. The vacuum cleaner according to claim 1, further comprising: A second motor is connected to the nozzle and causes the rotary cleaner to rotate. as well as A distance sensor, coupled to the nozzle and configured to sense the distance to an object located in front of the nozzle. The rotational speed of the second motor is configured to increase when the distance value sensed by the distance sensor is equal to or less than a reference value.

19. The vacuum cleaner according to claim 1, wherein, The fibers constituting the fluffy material are configured to be waterproof, water-repellent, or antimicrobial.

20. A vacuum cleaner, the vacuum cleaner comprising: A suction nozzle, comprising: a suction head unit having a suction port at its bottom; and a rotary cleaner rotatably connected to the suction head unit in front of the suction port based on a first rotation axis parallel to the left-right direction; and The cleaner body generates suction at the inlet. The rotating cleaner includes: A cylindrical core, with the first axis of rotation as its central axis; A fluffy material, said fluffy material being composed of a combination of fibers having waterproof, water-repellent, or antimicrobial properties, and attached to the outer peripheral surface of the core; and A first flow path is configured to traverse a groove in the fluffy material. The outer peripheral surface of the rotary cleaner, excluding the first flow path, is covered with the fluffy material, and The first flow path is configured as a single spiral groove and is configured to extend around the rotating cleaner once or slightly less than once.

21. The vacuum cleaner according to claim 20, wherein, The fibers are configured to be coated with a water-repellent or waterproof agent.

22. The vacuum cleaner according to claim 20, wherein, The fluffy material is composed of polyamide fibers, polyester fibers, or polypropylene fibers, or combinations thereof.

23. The vacuum cleaner according to claim 20, wherein, The fibers are made of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), nylon, or silicone.

24. The vacuum cleaner according to claim 20, wherein, The fluffy material is configured to include an antimicrobial agent.

25. The vacuum cleaner according to claim 20, wherein, The fluffy material was divided into: Inner layer, the inner layer being connected to the core; and An outer layer that extends over the inner layer to form the surface of the fluffy material, and The inner layer is configured to be waterproof, water-repellent, or antimicrobial.

26. The vacuum cleaner according to claim 20, wherein, The fiber is configured such that its diameter decreases toward the vertex.

27. The vacuum cleaner according to claim 20, wherein, The rotary cleaner also includes multiple dehydration flow paths configured in the form of grooves within the fluff to avoid connection to the first flow path. The width of the dehydration flow path is greater than the diameter of the fibers constituting the fluff and less than the width of the first flow path.

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