CN115279240B

CN115279240B - Dust collector

Info

Publication number: CN115279240B
Application number: CN202080098482.2A
Authority: CN
Inventors: 李旻雨; 张宰源; 金荣彬; 李荣宰
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2020-03-16
Filing date: 2020-09-14
Publication date: 2023-12-22
Anticipated expiration: 2040-09-14
Also published as: TWI798611B; EP4122371A4; CN115279240A; TW202135719A; WO2021187697A1; EP4122371A1

Abstract

The present invention relates to a cleaner in which a cloth is attached to a rotating disk to be able to perform cleaning, the cleaner comprising: a main body; a rotating disk rotatably coupled to the main body, and a cloth facing the ground is coupled to a lower side of the rotating disk; and a prevention unit provided to at least one of the main body and the rotating disk, and configured to minimize a gap between the main body and the rotating disk, thereby preventing foreign matter from flowing between the main body and the rotating disk. According to such a structure, the effect of preventing foreign matter from flowing into the gap between the main body and the rotating disk by the preventing portion provided in at least any one of the main body and the rotating disk can be obtained.

Description

Dust collector

Technical Field

The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner capable of preventing foreign matters from flowing in through a gap formed between a main body and a rotating disk.

Background

A vacuum cleaner is a device that sucks in foreign matter such as dust from the floor surface or wipes the foreign matter on the floor surface to clean the floor surface. Recently, a cleaner capable of performing wiping is being developed. In addition, the sweeping robot is a device that cleans while traveling by itself.

Fig. 1 is a sectional view schematically showing a conventional sweeping robot.

Referring to fig. 1, a conventional floor sweeping robot 1 is configured such that a pair of rotary tables 3 arranged in a left-right direction are rotatably coupled to a main body 2, and a cloth (not shown) is attached to the rotary tables 3 to wipe the floor. Wherein the rotating disk 3 is fastened to the shaft 4 to receive rotational power through the shaft 4, and the shaft 4 is rotatably supported to the main body 1 through a bearing 5. The shaft 4 is rotated by a driving unit (not shown).

In the above-described related art robot 1, a gap is formed between the rotating disk 3 and the main body 2. That is, since the rotary disk 3 is a rotating component and is disposed apart from the bottom surface of the main body 2 without being in contact therewith, a gap is formed between the rotary disk 3 and the main body 2.

With such a structure, when a gap is formed between the rotating disk 3 and the main body 2, foreign substances such as surrounding liquid, hair, fine particles, and the like can easily flow into the gap formed between the rotating disk 3 and the main body 2 as indicated by the arrow direction of fig. 1 in the process of the sweeping robot 1 performing the sweeping.

In addition, a steam cleaning and vacuum cleaner is disclosed in korean laid-open patent publication No. 2008-0065477 (hereinafter referred to as "patent document 1"). In patent document 1, a cloth attaching tray to which a cloth is attached is rotatably provided to a main body. In patent document 1, a part of the upper side surface of the wiper blade attachment plate is exposed to the outside, and foreign matter such as liquid, hair, and fine particles can easily flow between the wiper blade attachment plate and the main body through the exposed upper side surface of the wiper blade attachment plate.

As described above, if foreign matter such as hair and minute particles flows between the main body and the rotary disk, the hair is wound around the rotary shaft of the rotary disk to act on the motor as a rotation resistance, and the minute particles are sandwiched between the rotary disk and the main body to act on the rotation of the rotary disk as a resistance.

Therefore, there may occur a problem that such rotational resistance acts as a load on the motor to possibly cause malfunction of the motor, the inflowing liquid flows into the inside of the main body through the shaft to possibly cause malfunction of the electronic device, and minute particles interposed between the main body and the rotating disk may possibly cause breakage of the main body or the rotating disk.

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vacuum cleaner capable of preventing foreign matter from flowing into a gap between a main body and a rotating disk by forming ribs on at least one side of the main body and the rotating disk.

Technical proposal for solving the problems

In order to achieve the above object, a vacuum cleaner of a preferred embodiment of the present invention relates to a vacuum cleaner in which a rotating disk is rotatably coupled to a main body and cleaning cloth is attached to the rotating disk to perform cleaning, and in which a prevention part is provided between the main body and the rotating disk to prevent foreign matter from flowing between the main body and the rotating disk.

More specifically, the dust collector may include: a main body; a rotating disk rotatably coupled to the main body, and a cloth facing the ground is coupled to a lower side of the rotating disk; and a prevention unit provided to at least one of the main body and the rotating disk, and configured to minimize a gap between the main body and the rotating disk, thereby preventing foreign matter from flowing between the main body and the rotating disk.

Wherein, the rotary disk may include: a center plate rotatably fastened to the main body; a peripheral plate formed to have an inner diameter larger than an outer diameter of the center plate, the peripheral plate being disposed along a peripheral edge of the center plate; and spokes connecting the center plate and the peripheral plate, the spokes being provided in plural and arranged at intervals in a circumferential direction of the center plate to form through holes.

The preventing portion is configured to prevent foreign matter from flowing into a gap between the main body and the rotating disk.

More specifically, the preventing part may include: an outer rib formed in an annular shape protruding from the main body and arranged radially outward of the rotating disk so as to surround the rotating disk; and an inner rib formed in a ring shape protruding from the main body toward the rotating disk between the outer rib and a rotation shaft of the rotating disk.

The outer rib may be disposed apart from an end of the rotating disk so as not to contact the rotating disk.

Further, the outer rib may be configured such that its protruding height overlaps with the rotating disk by a prescribed area in the thickness direction of the rotating disk.

The inner rib guides the inflow foreign matter to be discharged through the through hole.

For this, the inner rib may be formed to protrude from the main body toward the center plate.

Alternatively, the inner rib may be formed to protrude from the main body toward the through hole.

The preventing part may further include a central rib formed between the outer rib and the inner rib to protrude in an annular shape from the main body toward the rotating disk.

The center rib is formed protruding from the main body toward the peripheral plate.

Further, the central rib is formed to have a protrusion height smaller than that of the inner rib.

The preventing part of another embodiment of the present invention may include: a center rib formed in a ring shape protruding from the main body toward the rotating disk; and an auxiliary rib formed protruding in an annular shape from the rotating disk toward the main body.

The auxiliary rib may be disposed adjacent to the inner side of the center rib and maintain a minimum interval not in contact with the center rib.

Further, the preventing part may further include an inner rib formed to protrude in an annular shape from the main body toward the rotating disk between the central rib and the rotating shaft of the rotating disk.

The inner rib may be formed to protrude from the main body toward the center plate or the through hole to guide the inflow foreign matter to be discharged through the through hole.

In addition, the preventing part may further include an outer rib formed to protrude in an annular shape from the main body and arranged radially outward of the rotating disk to surround the rotating disk.

The outer rib may be disposed apart from an end of the rotating disk so as not to contact the rotating disk, the outer rib being disposed such that a protruding height thereof overlaps the rotating disk by a prescribed area in a thickness direction of the rotating disk.

The main body of the cleaner of the embodiment of the present invention may include a bearing fastening part for supporting and rotatably fastening a bearing of a shaft to the rotating disk to provide rotational power.

In addition, the dust collector of the embodiment of the present invention may further include a bearing cover portion protruding from the bearing fastening portion toward the rotating disk side, minimizing a space between the main body and the rotating disk to prevent foreign matter from flowing into the bearing side.

More specifically, the bearing cap may include: a support portion extending from the bearing fastening portion and protruding toward the rotating disk side; and a cover portion formed to protrude from the support portion toward the rotation axis and to cover at least a portion of the lower side surface of the bearing.

In addition, the rotating disk of the dust collector of the embodiment of the invention may be provided in plurality to be rotatably coupled to the main body, and the preventing parts may be respectively formed between the main body and the plurality of rotating disks.

Effects of the invention

According to the dust collector of the invention, by forming the rib on at least one side of the main body and the rotating disk, the effect of preventing the foreign matter from flowing into the gap between the main body and the rotating disk can be obtained.

Further, according to the present invention, by preventing foreign matter from flowing into the gap between the main body and the rotating disk, an effect that failure of the motor due to rotation resistance can be prevented can be obtained.

Further, according to the present invention, by preventing foreign matter from flowing into the gap between the main body and the rotating disk, an effect of preventing breakage of the main body and the rotating disk due to rotation resistance can be obtained.

Drawings

Fig. 1 is a sectional view and an enlarged view schematically showing a conventional vacuum cleaner.

Fig. 2 is a perspective view schematically illustrating a dust collector according to an embodiment of the present invention.

Fig. 3 is a separated perspective view schematically illustrating a cleaner according to an embodiment of the present invention.

Fig. 4 is a perspective view schematically showing the rotating disc and the cloth separated from the cleaner of the embodiment of the present invention.

Fig. 5 is a perspective view schematically showing the removal of the bottom surface of the main body of the wipe from the cleaner of the embodiment of the present invention.

Fig. 6 is a perspective view schematically showing the removal of the underside of the main body of the wipe from the cleaner of the embodiment of the present invention.

Fig. 7 is a perspective view schematically showing a lower body selected from the vacuum cleaner of the embodiment of the present invention.

Fig. 8 is a perspective view schematically showing the separation of the rotating disc, the bearing, and the shaft selected from the vacuum cleaner of the embodiment of the present invention.

Fig. 9 is a sectional view and a partial enlarged view of the preventing part of the first embodiment of the cleaner of the embodiment of the present invention, sectioned through the I-I' region of fig. 5, schematically.

Fig. 10 is a sectional view schematically showing another embodiment of the preventing part of the first embodiment of the dust collector of the embodiment of the invention.

Fig. 11 is a sectional view schematically showing a preventing part of a second embodiment of the dust collector of the embodiment of the invention.

Fig. 12 is a sectional view schematically showing another embodiment of the preventing part of the second embodiment of the dust collector of the embodiment of the invention.

Fig. 13 is a sectional view schematically showing still another embodiment of the preventing part of the second embodiment of the dust collector of the embodiment of the invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is capable of various modifications and various embodiments, and therefore, specific embodiments are shown in the drawings and are intended to be described in detail herein. It is not intended that the invention be limited to the specific embodiments but should be interpreted to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In describing the present invention, the terms first, second, etc. may be used to describe various structural elements, but the structural elements are not limited by the terms. The term is used merely to distinguish one structural element from other structural elements. For example, a first structural element may be termed a second structural element, and, similarly, a second structural element may be termed a first structural element, without departing from the scope of the present invention.

The term "and/or" may include a combination of a plurality of related items or any of a plurality of related items.

When referring to a certain structural element as being "connected" or "coupled" to another structural element, it should be understood that it may be directly connected or coupled to the other structural element or that other structural elements may exist therebetween. Conversely, when referring to a certain structural element as being "directly connected" or "directly coupled" to another structural element, it should be understood that there are no other structural elements between them.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The expression in the singular may include the expression in the plural unless the context clearly indicates otherwise.

Furthermore, in this application, it should be understood that terms such as "comprises" or "comprising," and the like, are only intended to specify the presence of stated features, integers, steps, acts, structural elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, acts, structural elements, components, or groups thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries may be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In addition, the following embodiments are provided for a more complete understanding of those skilled in the art, and the shapes and sizes of structural elements in the drawings may be exaggerated for more specific explanation.

The dust collector of the embodiment of the invention is mainly characterized by the preventing part and the bearing cover part, and can be applied to a sweeping robot, a rod dust collector directly operated by a user, and the like because the preventing part and the bearing cover part are formed between the main body and the rotating disc.

The following is written based on an embodiment in which the prevention part and the bearing cap part, which are features of the present invention, are applied to the sweeping robot. Of course, the structure of the preventing part and the bearing cover part, which are features of the present invention, is only an example of the case where the structure is applied to the robot cleaner, and may be applied to any cleaner in which a main body such as a stick type cleaner and a rotating disk are relatively rotated.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

Fig. 2 and 3 are a perspective view and a separated perspective view schematically illustrating a cleaner according to an embodiment of the present invention, fig. 4 is a perspective view schematically illustrating a rotating disc and a cloth separated from the cleaner, and fig. 5 and 6 are a perspective view and a separated perspective view schematically illustrating a bottom surface of a main body from which the cloth is removed from the cleaner. Further, fig. 7 is a perspective view schematically showing a lower body selected from the vacuum cleaner, and fig. 8 is a separate perspective view schematically showing a rotating disc, a bearing, and a shaft selected from the vacuum cleaner.

Referring to fig. 2 to 8, the cleaner 10 according to the embodiment of the present invention may include a main body 100, a rotating disc 300, and a cloth 20. Further, as an example, the cleaner 10 of the present invention may be configured by a floor sweeping robot capable of automatically traveling to perform cleaning. The cleaner 10 may further include a control unit (not shown), a bumper 190, a first sensor 200, and a second sensor 210 to perform automatic traveling.

The control section may control the operations of the first actuator 160 and the second actuator 170 described later based on preset information or real-time information. The cleaner 10 may include a storage medium storing an application program for control by the control section. The control unit may drive the application program based on information input to the cleaner 10, information output from the cleaner 10, and the like, to control the cleaner 10.

The bumper 190 is coupled along an edge of the main body 100 and is formed to move with respect to the main body 100. For example, the bumper 190 may be coupled to the main body 100 in a manner capable of reciprocating in a direction approaching the center side of the main body 100.

The bumper 190 may be coupled along a portion of the edge of the body 100, or may be coupled along the entire edge of the body 100.

The height of the bumper 190 may be formed lower than the main body 100 or the same. Thus, when an obstacle located at a relatively low position collides with the bumper 190, the obstacle can be sensed by the bumper 190.

The first sensor 200 is coupled to the main body 100, and may sense movement (relative movement) of the bumper 190 with respect to the main body 100. Such a first sensor 200 may be configured by a micro Switch (microswitch), a photointerrupter (photo interrupter), a Tact Switch (Tact Switch), or the like.

The control part may control the cleaner 10 to avoid movement in a case where the bumper 190 of the cleaner 10 contacts an obstacle, and may control the operation of the first actuator 160 and/or the second actuator 170 according to information from the first sensor 200. For example, in the case where the bumper 190 contacts an obstacle during the travel of the cleaner 10, the position where the bumper 190 contacts may be grasped by the first sensor 200, and the control part may control the operation of the first actuator 160 and/or the second actuator 170 to be out of the contact position.

The second sensor 210 may be configured to be coupled to the body 100 and sense a relative distance from an obstacle. The second sensor 210 may be constituted by a distance sensor.

Based on the information from the second sensor 210, the control unit may control the operation of the first actuator 160 and/or the second actuator 170 to switch the traveling direction of the cleaner 10 or to move the cleaner 10 away from the obstacle when the distance between the cleaner 10 and the obstacle is equal to or smaller than a predetermined value.

The main body 100 may form the overall shape of the cleaner 10, or may be formed in a frame shape. The main body 100 may incorporate various components constituting the cleaner 10, and a part of the components constituting the cleaner 10 may be accommodated inside the main body 100. The main body 100 may be divided into a lower main body 110 and an upper main body 120, and components of the cleaner 10 may be disposed in a space formed by the lower main body 110 and the upper main body 120 coupled to each other.

The main body 100 may be configured such that the width (or diameter) in the horizontal direction (X-axis and Y-axis directions) is larger than the height in the vertical direction (Z-axis direction). Such a main body 100 can lower the center of gravity of the cleaner 10, and can provide a structure that contributes to stable operation during movement (traveling) and avoids obstacles.

The main body 100 may be configured in various forms, such as a circle, an ellipse, a quadrangle, or the like, when viewed from above or below.

The rotary disk 300 has a predetermined area and is formed in a flat plate, a flat frame, or the like. Such a rotary disk 300 may be parallel to the ground or inclined with respect to the ground in a state of being coupled to the main body 100.

The rotating disk 300 may be formed in a circular plate shape, and the bottom surface of the rotating disk 300 may be formed in a substantially circular shape.

The rotary disk 300 may be configured to be rotationally symmetrical as a whole.

The rotating disk 300 may include a central plate 310, peripheral plates 320, and spokes 330.

The center plate 310 constitutes the center of the rotary disk 300 and is rotatably coupled to the main body 100. The center plate 310 may be coupled to the lower side of the main body 100, and the top surface of the center plate 310 may be coupled to the main body 100 facing the bottom surface of the main body 100.

The rotation shaft of the rotation disk 300 may be formed in a direction penetrating the center of the center plate 310. The rotation axis of the rotary disk 300 may be formed in a direction perpendicular to the ground, or may be inclined at a predetermined angle with respect to the direction perpendicular to the ground.

The peripheral plate 320 is configured to surround the center plate 310 so as to be spaced apart from the center plate 310.

The spokes 330 connect the center plate 310 and the peripheral plate 320, are provided in plural numbers, and are repeatedly formed in the circumferential direction of the center plate 310. The spokes 330 may be arranged at equal intervals, and a plurality of through holes 340 penetrating up and down are provided between the spokes 330, so that liquid (for example, water) discharged from a water supply pipe 240 described later can be transferred to the wiper 20 side through the through holes 340.

Such a rotary disk 300 may be provided in plural and rotatably coupled to the main body 100. As an example, as shown in fig. 4, two of the vacuum cleaners 10 may be provided and arranged side by side in a direction perpendicular to the traveling direction of the vacuum cleaner, that is, in a left-right direction. In this case, the pair of rotary tables 300 may be configured to be bilaterally symmetrical to each other.

The bottom surface of the cloth 20 facing the floor surface has a predetermined area, and the cloth 20 is flat. The wipe 20 is configured such that the width (or diameter) in the horizontal direction is sufficiently larger than the height in the vertical direction. The bottom surface of the cloth 20 may be parallel to the ground or may be inclined to the ground when the cloth 20 is coupled to the side of the body 100.

The bottom surface of the wipe 20 may be configured to be substantially circular.

The wiper 20 may be configured to be rotationally symmetrical as a whole.

The wipe 20 may be constructed of a wide variety of materials that are capable of wiping the floor while in contact therewith. For this purpose, the bottom surface of the wipe 20 may be made of cloth, nonwoven fabric, brush having a predetermined area, or the like, which is made of a woven fabric or knitted fabric.

In the cleaner 10, the cloth 20 is configured to be detachably attached to the bottom surface of the rotating disc 300, and is coupled to the rotating disc 300 to rotate together with the rotating disc 300. The cloth 20 may be closely adhered to the bottom surface of the peripheral plate 320 and may be closely adhered to the bottom surfaces of the central plate 310 and the peripheral plate 320.

The wipes 20 may be removably attached to the rotating disk 300 using a variety of means and ways. In one embodiment, at least a portion of the wipe 20 may be coupled to the rotating disk 300 in a hanging, clamping, or the like manner. In another embodiment, additional means may be provided to join the wipe 20 and the rotating disk 300, such as a clamp. In still another embodiment, one side of a pair of fastening means (as a specific example of fastening means, a pair of magnets, a pair of velcro (velcro) or a pair of buttons (male and female buttons) or the like, which are combined with each other, that are combined with and separated from each other, which are combined with each other using attractive force, may be fixed to the cloth 20, and the other side may be fixed to the rotating disc 300.

When the cloth 20 is bonded to the rotary disk 300, the cloth 20 and the rotary disk 300 may be bonded to each other in a state where the cloth 20 is overlapped with each other, and the cloth 20 may be bonded to the rotary disk 300 such that the center of the cloth 20 coincides with the center of the rotary disk 300.

The cleaner 10 may be configured to travel straight along the floor surface. For example, the cleaner 10 may be straight forward (in the X-axis direction) during cleaning, or may be straight backward when it is necessary to avoid an obstacle or a drop.

By making the rotational speeds of the pair of rotary tables 300 arranged side by side (Y-axis direction) different from each other, the cleaner 10 can be rotated and moved in the left-right direction (Y-axis direction). That is, when the rotational speed of the left rotary plate 300 is greater than the rotational speed of the right rotary plate 300 or the left rotary plate 300 is rotated but the right rotary plate 300 is not rotated, the cleaner 10 may be rotated and moved in the right direction with respect to the moving direction of the cleaner, based on the case where the second sensor 210 is moved in the forward direction. Alternatively, when the rotational speed of the right rotary plate 300 is greater than the rotational speed of the left rotary plate 300, or the right rotary plate 300 is rotated while the left rotary plate 300 is not rotated, it may be rotated and moved in the left direction with respect to the moving direction of the cleaner 10.

The cleaner 10 includes a first actuator 160, a second actuator 170, a battery 220, a water tub 230, and a water supply pipe 240.

The first actuator 160 is coupled to the main body 100 to rotate the rotary disk 300.

The first actuator 160 may include a first housing, a first motor, and one or more first gears.

The first housing supports a plurality of components constituting the first actuator 160, and is fixedly coupled to the main body 100.

The first motor may be constituted by an electric motor.

The plurality of first gears are rotated in mesh with each other, connect the first motor with the shaft 400 fastened to the rotating disk 300, and transmit the rotation power of the first motor to the shaft 400 to rotate the rotating disk 300. Accordingly, when the rotation shaft of the first motor rotates, the rotating disk 300 rotates.

The second actuator 170 is coupled to the main body 100 to rotate the rotary disk 300.

The second actuator 170 may include a second housing, a second motor, and one or more second gears.

The second housing supports a plurality of components constituting the second actuator, and is fixedly coupled to the main body 100.

The second motor may be constituted by an electric motor.

The plurality of second gears are rotated in mesh with each other, connect the second motor with the shaft 400 fastened to the rotating disk 300, and transmit the rotation power of the second motor to the shaft 400 to rotate the rotating disk 300. Accordingly, when the rotation shaft of the second motor rotates, the rotating disk 300 rotates.

As described above, in the cleaner 10, the rotary disk 300 and the cloth 20 can be rotated by the operation of the first actuator 160 and the second actuator 170.

The first actuator 160 and the second actuator 170 may be disposed directly above the rotating disk 300. With such a structure, the loss of power transmitted from the first actuator 160 and the second actuator 170 to the rotating disk 300 can be minimized. In addition, the load of the first actuator 160 and the second actuator 170 may be applied to the rotating disk 300 side, so that the cloth 20 is wiped while being sufficiently rubbed with the ground.

Wherein the first actuator 160 and the second actuator 170 may be symmetrical (bilateral symmetry) to each other.

The shaft 400 is rotatably coupled to the lower body 110, receives rotational forces from the first actuator 160 and the second actuator 170, and rotates the rotary disk 300.

The shaft 400 may include a gear fastening part 410, a bearing fastening part 420, and a rotating disc fastening part 430. The shaft 400 may be fastened and fixed to the rotary disk 300 by a fastening pin 440 in a state of being inserted into the rotary disk 300.

A gear fastening portion 410 is formed at one side end of the shaft 400, and the first gear 163 or the second gear 173 is insert-fastened to the gear fastening portion 410. Further, at least any one plane may be formed at the gear fastening part 410 to be in plane contact with the first gear 163 or the second gear 173, so that sliding between the first gear 163 or the second gear 173 can be prevented.

The rotating disk fastening part 430 is formed at the other side end of the shaft 400, and is inserted and fastened to the rotating disk 300. Further, the rotating disk fastening part 430 may be formed with at least any one plane to be in planar contact with the rotating disk 300, so that it is possible to prevent sliding from being generated between the rotating disk 300.

The bearing fastening part 420 is formed between the gear fastening part 410 of the shaft 400 and the rotating disk fastening part 430, inserted into the inner diameter of the bearing 500, and insertedly fastened. The bearing 500 is inserted and fastened to the bearing fastening portion 130 formed in the lower body 110.

In a state where the rotating disk fastening part 430 of the shaft 400 is inserted into the rotating disk 300, the fastening pin 440 may be inserted through the fastening hole 312 formed in the rotating disk 300 to fasten and fix the shaft 400 to the rotating disk 300.

Such a fastening pin 440 may be fastened to the shaft 400 by various known methods, for example, by pressing force insertion into the shaft 400, or by screwing into the shaft 400 by external threads formed on the surface thereof inserted into the shaft 400, or the like.

The battery 220 is coupled to the main body 100 and supplies power to other components constituting the cleaner 10. The battery 220 may supply power to the first actuator 160 and the second actuator 170. In particular, power is supplied to the first motor 162 and the second motor 172.

The battery 220 may be charged by an external power source, and for this purpose, a charging terminal for charging the battery 220 may be provided at one side of the body 100 or the battery 220 itself.

In the cleaner 10, the battery 220 may be coupled to the main body 100.

The water tub 230 is constructed in a container shape having an inner space to store a liquid such as water therein. The water tub 230 may be fixedly coupled to the main body 100, or may be detachably coupled to the main body 100.

The water supply pipe 240 is constructed in the form of a hose (tube) or a hard pipe (pipe) which is connected to the water tub 230 so that the liquid inside the water tub 230 can flow therethrough. The water supply pipe 240 is configured such that the end portion on the opposite side to the water tub 230 is located at the upper side of the rotary disk 300, whereby the liquid inside the water tub 230 can be supplied to the side of the wiper 20 through the through-holes 340 of the rotary disk 300.

In the cleaner 10, the water supply pipe 240 may be configured such that one pipe is branched into two, and in this case, the end portions of the branched pair of pipes may be located above the pair of rotary plates 300, respectively.

In the cleaner 10, an additional pump may be provided in order to move the liquid through the water supply pipe 240.

With this structure, when the cleaner 10 ejects the liquid stored in the water tub 230 from the upper side of the rotating disk 300 through the water supply pipe 240, the liquid may be supplied to the wiper 20 through the through holes 340 formed in the rotating disk 300. Thus, the cleaning cloth 20 can be prevented from drying by periodically supplying the liquid, and the cleaning performance can be improved.

The dust collector of the embodiment of the invention provides a structure capable of preventing foreign matters from flowing in through a gap formed between a main body and a rotating disk.

Such a structure will be described in detail below with reference to fig. 5 to 13.

Fig. 9 is a sectional view and a partial enlarged view of a prevention part of the first embodiment of the dust collector, which is sectioned through the I-I' region of fig. 5, and fig. 10 is a sectional view of another embodiment of the prevention part of the first embodiment.

The main body 100 of the cleaner 10 according to the embodiment of the present invention is composed of a lower main body 110 and an upper main body 120 (see fig. 3), and the rotary disk 300 and the preventing portion are components provided in the lower main body 110, and therefore, the description will be given below with reference to the lower main body 110.

Referring to fig. 5 to 9, the cleaner 10 of the embodiment of the present invention includes a prevention part provided to at least any one of the lower body 110 and the rotating disk 300 to minimize a space between the lower body 110 and the rotating disk 300, preventing foreign matter from flowing between the lower body 110 and the rotating disk 300. That is, the preventing portion is provided to the lower body 110 and/or the rotating disk 300, and functions as a blocking film at a gap formed between the lower body 110 and the rotating disk 300, thereby preventing foreign matter from flowing between the lower body 110 and the rotating disk 300.

The prevention part of the first embodiment of the present invention may include an outer rib 610 and an inner rib 620.

The outer rib 610 may be disposed radially outward of the rotating disk 300 and formed protruding in an annular shape from the lower body 110 to surround the rotating disk 300. That is, the outer rib 610 may be disposed radially outward of the rotating disk 300, and may prevent foreign matter from flowing in the radial direction of the rotating disk 300.

The outer rib 610 may be disposed spaced apart from an end of the rotating disk 300 to prevent contact with the rotating disk 300. That is, if the outer end of the rotating disk 300 contacts the outer rib 610, the outer rib 610 generates contact resistance when the rotating disk 300 rotates, and thus there is a possibility that a problem that the rotating disk 300 cannot generate a desired rotational force may occur. In addition, acting on the motor as a load may cause a decrease in energy efficiency and malfunction of the motor. Accordingly, the outer rib 610 is disposed to surround the outer end of the rotating disk 300 and is formed to have a prescribed gap so as not to restrict the rotation of the rotating disk 300.

The outer rib 610 may be configured such that its protruding height forms an area a overlapping the rotating disk 300 by a prescribed area in the thickness direction of the rotating disk 300.

Wherein, when the outer side rib 610 is formed convexly so that its protruding height completely surrounds the outer side of the rotating disk 300 in the thickness direction of the rotating disk 300, the outer side rib 610 generates contact resistance with the cloth attached to the rotating disk 300, thereby possibly causing a problem of a rotational force acting on the rotating disk 300 as resistance.

In addition, if the outer rib 610 protrudes such that a region overlapping the rotating disk 300 is not formed in the thickness direction of the rotating disk 300 by the protruding height thereof, a gap is formed between the outer rib 610 and the rotating disk 300 in the radial direction of the rotating disk 300, and thus a problem in that foreign matter flows into the gap may be caused.

Accordingly, the outer rib 610 may be formed with a protrusion height of the region a formed to overlap the rotating disk 300 by a prescribed region in the thickness direction of the rotating disk 300 to prevent contact resistance with the cloth from being generated, and to prevent gaps from being generated in the radial direction of the rotating disk 300 to prevent foreign matter from flowing in.

The inner rib 620 may be formed to protrude in a ring shape from the lower body 110 toward the rotating disk 300 between the outer rib 610 and the rotation shaft of the rotating disk 300.

The inner rib 620 is formed near the rotation axis of the rotating disk 300, so that even if foreign matter flows between the lower body 110 and the rotating disk 300, it is possible to prevent the foreign matter from flowing into the rotation axis of the rotating disk 300, that is, the shaft 400 and the bearing 500 side.

Wherein the inner rib 620 is formed such that a protruding end portion thereof protrudes toward the upper side of the rotating disk 300 and does not contact the upper side of the rotating disk 300. That is, if the inner rib 620 contacts the upper side of the rotating disk 300, a problem of a rotational force acting on the rotating disk 300 as a resistance may be caused.

Further, the inner rib 620 guides the inflow foreign matter to be discharged through the through hole 340 formed in the rotating disk 300.

For this, as shown in fig. 9, the inner rib 620 may be formed to protrude from the lower body 110 toward the center plate 310 of the rotating disk 300. Alternatively, as shown in fig. 10, the inner rib 620 may be formed to protrude from the lower body 110 toward the through hole 340 of the rotary disk 300.

First, foreign matter is prevented from flowing between the lower body 110 and the rotary disk 300 by the outer rib 610, but minute substances such as liquid, dust, hair, etc. may flow between the gaps formed between the rotary disk 300 and the outer rib 610. The foreign matter flowing in this way may flow into the rotating shaft of the rotating disk 300, i.e., the shaft 400 and the bearing 500 side along the gap between the lower body 110 and the rotating disk 300. The foreign matter flowing in this way flows into the bearing 500, and may act as resistance to rotation, or damage the bearing 500.

Accordingly, the inner rib 620 is formed to protrude from the lower body 110 toward the center plate 310 or the through hole 340 of the rotating disk 300 to block a moving path, so that even if foreign matter flows between the lower body 110 and the rotating disk 300 through the outer rib 610, the flowing foreign matter cannot move toward the bearing 500 side, and the blocked foreign matter is guided to fall down toward the through hole 340 of the rotating disk 300, so that the flowing foreign matter is discharged to the outside.

The preventing part of the first embodiment of the present invention may further include a central rib 630, the central rib 630 being formed in a ring shape protruding from the lower body 110 toward the rotating disk 300 between the outer rib 610 and the inner rib 620.

The center rib 630 is formed near the center region between the outer rib 610 and the inner rib 620, so that even if foreign matter flows between the lower body 110 and the rotating disk 300, the inflow speed toward the rotating shaft of the rotating disk 300, that is, toward the shaft 400 and the bearing 500 side can be reduced.

In the drawings, only one central rib 630 is shown, but a plurality may be formed between the outer rib 610 and the inner rib 620 of the lower body 110. In addition, the center ribs formed in plural may be configured to have different heights from each other.

In addition, the central rib 630 may be formed to have a protrusion height smaller than that of the inner rib 620. That is, the center rib 630 is formed to function as a resistance capable of reducing a moving speed, rather than blocking the inflow of foreign matter from moving toward the rotation axis direction of the rotating disk 300.

If the central rib 630 is formed to have a height similar to the protruding height of the inner rib 620 to block the foreign matter from moving in the rotation axis direction of the rotating disk 300, the foreign matter is stored between the central rib 630 and the outer rib 610 and cannot be discharged to the outside, and thus, when stored to a prescribed amount or more, there is a possibility that a problem of a rotation force acting on the rotating disk 300 as a resistance may occur.

Accordingly, the center rib 630 may be formed to reduce a moving speed of the inflow foreign matter and allow a protruding height of the movement of the inflow foreign matter so that the inflow foreign matter is discharged to the outside through the through-hole 340 of the rotating disk 300.

According to such a structure, the preventing part of the first embodiment of the present invention may prevent inflow of foreign matter for the first time by using the outer rib 610 at the outermost side of the rotating disk 300, may reduce the moving speed of the inflow foreign matter by using the central rib 630 if there is the inflow foreign matter, and the inner rib 620 may guide the inflow foreign matter to the through hole 340 of the rotating disk 300 to discharge the inflow foreign matter to the outside. Therefore, foreign matter can be prevented from flowing into the shaft 400 or the bearing 500 side to act as resistance against the rotation or damage of the member.

Fig. 11 to 13 are sectional views schematically showing a preventing part of a second embodiment of the dust collector of the embodiment of the invention. Fig. 11 to 13 are diagrams shown with reference to the same portions as those shown enlarged in the cross-sectional view shown in fig. 9.

Referring to fig. 11 to 13, the prevention part of the second embodiment of the present invention may include a center rib 630 and an auxiliary rib 640.

The central rib 630 may be formed to protrude in an annular shape from the lower body 110 toward the rotating disk 300. Such a central rib 630 may be formed at the lower body 110 to face the peripheral plate 320 from the upper side of the peripheral plate 320 of the rotating disk 300.

Wherein the central rib 630 is formed such that its protruding end portion protrudes toward the upper side of the rotating disk 300 and is not in contact with the upper side of the rotating disk 300. That is, if the center rib 630 contacts the upper side of the rotating disk 300, a problem of a rotational force acting on the rotating disk 300 as a resistance may be caused.

The auxiliary rib 640 may be formed to protrude in an annular shape from the rotating disk 300 toward the lower body 110. Such auxiliary ribs 640 may be formed at the peripheral plate 320 from the peripheral plate 320 of the rotating disk 300 toward the lower body 110.

Wherein the auxiliary rib 640 is formed such that a protruding end portion thereof protrudes toward the lower side of the lower body 110 and is not in contact with the lower side of the lower body 110. That is, if the auxiliary rib 640 contacts the lower side surface of the lower body 110, a problem of a rotational force acting on the rotating disk 300 as a resistance may be caused.

Further, the auxiliary rib 640 may be configured to maintain a minimum interval not in contact with the center rib 630 and be disposed adjacent to the inner side of the center rib 630.

That is, if the auxiliary rib 640 contacts the central rib 630, the central rib 630 generates contact resistance when the rotating disk 300 rotates, so that a problem may arise in that the rotating disk 300 cannot generate a desired rotational force.

Further, when the interval between the auxiliary rib 640 and the center rib 630 is formed to be large, the blocking effect is reduced, and thus, it is possible to prevent inflow of foreign matter by forming the interval between the auxiliary rib 640 and the center rib 630 to be a minimum interval that is not in contact with each other.

That is, as shown in fig. 11, when the foreign matter flows in the radial direction of the rotary disk 300, even if the minute foreign matter having small particles flows in the gap between the rotary disk 300 and the center rib 630, the movement thereof is blocked by the auxiliary rib 640, so that the foreign matter can be prevented from flowing in.

According to such a structure, the preventing part of the second embodiment of the present invention includes the center rib 630 and the auxiliary ribs 640 to have a gap in the form of concave-convex between the lower body 110 and the rotating disk 300, so that it is possible to prevent foreign matter from flowing in toward the rotation axis direction of the rotating disk 300.

Further, referring to fig. 12, the preventing part of the second embodiment of the present invention may further include an inner rib 620, the inner rib 620 being formed to protrude in an annular shape from the lower body 110 toward the rotating disk 300 between the central rib 630 and the rotation shaft of the rotating disk 300.

For this, as shown in fig. 12, the inner rib 620 may be formed to protrude from the lower body 110 toward the center plate 310 of the rotating disk 300. Alternatively, the inner rib 620 may be formed to protrude from the lower body 110 toward the through hole 340 of the rotary disk 300.

First, foreign matter is prevented from flowing between the lower body 110 and the rotating disk 300 by the center rib 630 and the auxiliary rib 640, but minute substances such as liquid, dust, etc. may flow between the gaps formed between the center rib 630 and the auxiliary rib 640. The foreign matter flowing in this way may flow into the rotating shaft of the rotating disk 300, i.e., the shaft 400 and the bearing 500 side along the gap between the lower body 110 and the rotating disk 300. The foreign matter flowing in this way flows into the bearing 500, and may act as resistance to rotation, or damage the bearing 500.

Accordingly, the inner rib 620 is formed to protrude from the lower body 110 toward the center plate 310 or the through hole 340 of the rotating disk 300 to block a moving path, so that even if foreign matter flows between the lower body 110 and the rotating disk 300 through the center rib 630 and the auxiliary rib 640, the flowing foreign matter cannot move toward the bearing 500 side, and the blocked foreign matter is guided to fall down toward the through hole 340 of the rotating disk 300, so that the flowing foreign matter is discharged to the outside.

Referring to fig. 13, the preventing part of the second embodiment of the present invention may further include an outer rib 610 disposed radially outward of the rotating disk 300 and formed to protrude in an annular shape from the lower body 110 to surround the rotating disk 300. That is, the outer rib 610 may be disposed radially outward of the rotating disk 300, and may prevent foreign matter from flowing in the radial direction of the rotating disk 300 for the first time.

The outer rib 610 may be disposed spaced apart from an end of the rotating disk 300 to prevent contact with the rotating disk 300. That is, if the outer end of the rotating disk 300 contacts the outer rib 610, the outer rib 610 generates contact resistance when the rotating disk 300 rotates, and thus there is a possibility that a problem that the rotating disk 300 cannot generate a desired rotational force may occur. Accordingly, the outer rib 610 is disposed to surround the outer end of the rotating disk 300 and is formed to have a prescribed gap so as not to restrict the rotation of the rotating disk 300.

The outer rib 610 may be configured such that its protruding height forms a region overlapping the rotating disk 300 by a prescribed region in the thickness direction of the rotating disk 300.

Accordingly, the outer rib 610 may be formed with a protrusion height forming an area overlapping the rotating disk 300 by a prescribed area in the thickness direction of the rotating disk 300 to prevent contact resistance with the cloth from being generated and to prevent gaps from being generated in the radial direction of the rotating disk 300 to prevent foreign matter from flowing in.

According to such a structure, the preventing part of the second embodiment of the present invention can prevent the inflow of the foreign matter at the outermost side of the rotating disk 300 for the first time by the outer side rib 610, can also prevent the movement of the inflow foreign matter at the second time by the center rib 630 and the auxiliary rib 640 if there is the inflow foreign matter, and the foreign matter passing through the center rib 630 and the auxiliary rib 640 can be guided to the through hole 340 of the rotating disk 300 by the inner side rib 620 to be discharged to the outside. Therefore, foreign matter can be prevented from flowing into the shaft 400 or the bearing 500 side to act as resistance against the rotation or damage of the member.

The cleaner 10 of the embodiment of the present invention may further include a bearing cap 800 that prevents foreign materials from flowing into the bearing 500.

A bearing fastening part 130 to which a bearing 500 for rotatably supporting a shaft 400 fastened to the rotary disk 300 and providing rotary power is fastened may be formed at the lower body 110.

Such a bearing cap 800 protrudes toward the rotating disk 300 side from the bearing fastening part 130 to minimize the interval between the lower body 110 and the rotating disk 300, thereby preventing foreign matter from flowing in toward the bearing 500 side.

Referring to fig. 9, as an example, the bearing cap 800 may include a support portion 810 and a cap portion 820.

The support portion 810 may be configured to extend from the bearing fastening portion 130 and protrude toward the rotating disk 300 side. That is, the supporting portion 810 may be formed to extend from the bearing fastening portion 130 formed at the lower body 110 and protrude toward the rotating disk 300 side.

Further, the supporting part 810 is protruded with a protruded height similar to the above-described inner side rib 620, so that it is possible to block the inflow of foreign matter between the lower body 110 and the rotating disk 300 in the radial direction.

The cover part 820 is formed to protrude from the support part 810 toward the rotation axis direction of the rotating disc 300 and to cover at least a portion of the lower side surface of the bearing 500. That is, the cover 820 protrudes inward from the end of the support 810 to cover the bottom surface of the bearing 500 so as to surround the bottom surface of the bearing 500, thereby blocking the inflow of foreign matter into the bottom surface of the bearing 500.

According to such a structure, the supporting portion 810 covers the side surface of the bearing 500, and the cover portion 820 covers the bottom surface of the bearing 500, so that even in a case where foreign matter flowing between the lower body 110 and the rotary disk 300 cannot be discharged from the through hole 340 of the rotary disk 300 and a part of the foreign matter moves toward the bearing 500 side, the inflow of the foreign matter into the bearing 500 can be prevented by the supporting portion 810 and the cover portion 820 of the bearing cover portion 800.

Therefore, the dust collector of the embodiment of the invention comprises the preventing part and the bearing cover part, wherein the preventing part blocks the foreign matter from flowing into the space between the main body and the rotating disk for the first time, and the bearing cover part blocks the foreign matter for the second time when a part of the foreign matter moves towards the bearing side, so that the foreign matter can be prevented from flowing into the bearing and the shaft.

The present invention has been described in detail by way of specific embodiments thereof, but it is to be construed that the present invention is not limited thereto and that the present invention may be modified or improved by those skilled in the art to which the present invention pertains.

Simple variants or modifications of the invention fall within the scope of the invention, the specific protection scope of which will become clear from the scope of the claims.

Claims

1. A vacuum cleaner, comprising:

A main body;

a rotating disk rotatably coupled to the main body, and a cloth facing the ground is coupled to a lower side of the rotating disk; and

a prevention unit provided in at least one of the main body and the rotating disk to minimize a gap between the main body and the rotating disk, thereby preventing foreign matter from flowing between the main body and the rotating disk,

the rotating disk includes:

a center plate rotatably fastened to the main body;

a peripheral plate formed to have an inner diameter larger than an outer diameter of the center plate, the peripheral plate being disposed along a peripheral edge of the center plate; and

spokes connecting the center plate and the peripheral plate, the spokes being provided in plural and spaced apart from each other in a circumferential direction of the center plate to form through holes,

the foreign matter is discharged through the through hole.

2. A vacuum cleaner according to claim 1, wherein,

the prevention section includes:

an outer rib formed in an annular shape protruding from the main body and arranged radially outward of the rotating disk so as to surround the rotating disk; and

an inner rib formed in an annular shape protruding from the main body toward the rotating disk between the outer rib and a rotation shaft of the rotating disk.

3. A vacuum cleaner according to claim 2, wherein,

the outer rib is disposed apart from an end of the rotating disk so as not to contact the rotating disk.

4. A vacuum cleaner according to claim 2, wherein,

the outer rib is arranged such that its protruding height overlaps the rotating disk by a prescribed area in the thickness direction of the rotating disk.

5. A vacuum cleaner according to claim 2, wherein,

6. A vacuum cleaner according to claim 2, wherein,

the inner rib is formed to protrude from the main body toward the center plate.

7. A vacuum cleaner according to claim 2, wherein,

the inner rib is formed to protrude from the main body toward the through hole.

8. A vacuum cleaner according to claim 2, wherein,

the prevention part further includes:

a center rib formed in an annular shape protruding from the main body toward the rotating disk between the outer rib and the inner rib.

9. A vacuum cleaner according to claim 8, wherein,

10. A vacuum cleaner according to claim 8, wherein,

the central rib is formed to have a protrusion height smaller than that of the inner rib.

11. A vacuum cleaner according to claim 1, wherein,

the prevention section includes:

a center rib formed in a ring shape protruding from the main body toward the rotating disk; and

auxiliary ribs formed protruding in an annular shape from the rotating disk toward the main body.

12. A vacuum cleaner according to claim 11, wherein,

the auxiliary rib is disposed adjacent to the inner side of the center rib and maintains a minimum interval not in contact with the center rib.

13. A vacuum cleaner according to claim 11, wherein,

the prevention part further includes:

an inner rib formed in an annular shape protruding from the main body toward the rotating disk between the center rib and a rotation axis of the rotating disk.

14. A vacuum cleaner according to claim 13, wherein,

the inner rib is formed to protrude from the main body toward the center plate or the through hole to guide the inflow foreign matter to be discharged through the through hole.

15. A vacuum cleaner according to claim 13, wherein,

the prevention part further includes:

And an outer rib formed in an annular shape protruding from the main body and disposed radially outward of the rotating disk to surround the rotating disk.

16. A vacuum cleaner according to claim 15, wherein,

the outer rib is disposed apart from an end of the rotating disk so as not to contact the rotating disk, and the outer rib is disposed so that its protruding height overlaps the rotating disk by a prescribed area in a thickness direction of the rotating disk.

17. A vacuum cleaner according to claim 1, wherein,

the main body includes:

a bearing fastening part for supporting and rotatably fastening a bearing of a rotation shaft of the rotation disk to provide rotation power,

the dust collector further comprises:

and a bearing cover portion protruding from the bearing fastening portion toward the rotating disk side, minimizing a space between the main body and the rotating disk to prevent foreign matter from flowing into the bearing side.

18. The vacuum cleaner of claim 17, wherein the vacuum cleaner further comprises a vacuum cleaner,

the bearing cap includes:

a support portion extending from the bearing fastening portion and protruding toward the rotating disk side; and

and a cover part formed to protrude from the support part toward the rotation axis and to cover at least a part of the lower side surface of the bearing.

19. A vacuum cleaner according to claim 1, wherein,

the rotating disk is provided with a plurality of rotating disks which are combined with the main body in a rotatable mode,

the preventing parts are respectively formed between the main body and the plurality of rotating disks.