CN115279240A

CN115279240A - Vacuum cleaner

Info

Publication number: CN115279240A
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: 2022-11-01
Anticipated expiration: 2040-09-14
Also published as: TWI798611B; EP4122371A4; CN115279240B; TW202135719A; WO2021187697A1; EP4122371A1

Abstract

The present invention relates to a dust collector in which a cloth is attached to a rotating disk to enable cleaning, the dust collector including: a main body; a rotary plate rotatably coupled to the main body, and a wiper facing the floor is coupled to a lower side of the rotary plate; and a prevention part provided to at least one of the main body and the rotary disk to minimize an interval between the main body and the rotary disk to prevent foreign substances from flowing between the main body and the rotary disk. According to such a configuration, an effect of preventing foreign substances from flowing into a gap between the main body and the rotary disk by the preventing portion provided to at least one of the main body and the rotary disk can be obtained.

Description

Vacuum cleaner

Technical Field

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

Background

A vacuum cleaner is a device that cleans by sucking foreign substances such as dust from a floor surface or wiping foreign substances on the floor surface. Recently, a cleaner capable of performing wiping is being developed. In addition, a 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 cleaning robot 1 is configured such that a pair of turn plates 3 disposed in a left-right direction are rotatably coupled to a main body 2, and a wiper (not shown) is attached to the turn plates 3 to wipe a floor surface. Wherein the rotary disk 3 is fastened to a shaft 4 to receive rotary 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 sweeping robot 1, a gap is formed between the rotating disk 3 and the main body 2. That is, the rotary disk 3 is a rotating component and is disposed so as to be spaced from the bottom surface of the main body 2 without contacting the bottom surface, and therefore 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, etc. can easily flow into the gap formed between the rotating disk 3 and the main body 2 as shown in the arrow direction of fig. 1 during the cleaning performed by the cleaning robot 1.

Further, 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 wiper attachment plate to which a wiper is attached is rotatably provided in a main body. In patent document 1, a part of the upper surface of the wiper attachment plate is exposed to the outside, and foreign substances such as liquid, hair, and fine particles can easily flow between the wiper attachment plate and the main body through the exposed upper surface of the wiper attachment plate.

As described above, if foreign matter such as hair and fine particles flows into between the main body and the rotating disk, the hair is wound around the rotating shaft of the rotating disk and acts on the motor as rotational resistance, and the fine particles are sandwiched between the rotating disk and the main body and act on the rotation of the rotating disk as resistance.

Therefore, there may be generated a problem that such a rotation resistance acts on the motor as a load and may cause a malfunction of the motor, a malfunction of the electronic device may be caused by inflow of the inflow liquid into the inside of the main body through the shaft, and a breakage of the main body or the rotating disk may be caused by fine particles caught between the main body and 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 in which a rib is formed on at least one of a main body and a rotary plate to prevent foreign substances from flowing into a gap between the main body and the rotary plate.

Means for solving the problems

In order to achieve the above object, a vacuum cleaner according to a preferred embodiment of the present invention is directed to a vacuum cleaner in which a rotary plate is rotatably coupled to a main body and a cloth is attached to the rotary plate to perform cleaning, wherein a prevention unit is provided between the main body and the rotary plate to prevent foreign substances from flowing between the main body and the rotary plate.

More specifically, the vacuum cleaner may include: a main body; a rotating plate rotatably coupled to the main body, and a wiper facing the floor surface coupled to a lower side of the rotating plate; and a prevention part provided to at least one of the main body and the rotary disk to minimize an interval between the main body and the rotary disk to prevent foreign substances from flowing between the main body and the rotary disk.

Wherein the rotating disk may include: a center plate rotatably fastened to the body; a peripheral plate formed to have an inner diameter larger than an outer diameter of the central plate, the peripheral plate being disposed along a periphery of the central plate; and spokes connecting the central plate and the peripheral plate, wherein the spokes are provided with a plurality of through holes and are arranged at intervals along the circumferential direction of the central plate to form through holes.

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

More specifically, the prevention part may include: an outer rib formed in an annular projection from the main body and arranged radially outside the rotary disk so as to surround the rotary disk; and an inner rib formed to protrude in a ring shape from the main body toward the rotary disk between the outer rib and the rotary shaft of the rotary disk.

The outer rib may be disposed spaced 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 a projection height thereof overlaps the rotary disk by a prescribed area in a thickness direction of the rotary disk.

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

To this end, the inner rib may be formed to protrude from the main body toward the central plate.

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

The prevention part may further include a center rib formed in an annular protrusion from the main body toward the rotary disk between the outer side rib and the inner side rib.

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

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

The prevention part of another embodiment of the present invention may include: a central rib formed in an annular protrusion from the main body toward the rotary disk; and an auxiliary rib formed in an annular protrusion from the rotating disk toward the main body.

The auxiliary rib may be disposed adjacent to an inner side of the central rib and maintain a minimum interval not contacting the central rib.

Further, the prevention part may further include an inner rib formed to protrude in a ring shape from the main body toward the rotary disk between the central rib and the rotary shaft of the rotary disk.

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

In addition, the prevention part may further include an outer rib formed in an annular protrusion from the main body and disposed radially outward of the rotating disk to surround the rotating disk.

The outer rib may be disposed to be spaced apart from an end portion of the rotary plate so as not to contact the rotary plate, and the outer rib may be disposed to have a projection height overlapping the rotary plate by a predetermined region in a thickness direction of the rotary plate.

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

Further, the cleaner 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 to minimize an interval between the main body and the rotating disk to prevent foreign substances from flowing into the bearing side.

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

In addition, the rotating discs of the vacuum cleaner according to the embodiment of the present invention may be provided in plural numbers, and rotatably coupled to the main body, and the preventing parts may be respectively formed between the main body and the plurality of rotating discs.

Effects of the invention

According to the vacuum cleaner of the present invention, by forming the rib on at least one side of the main body and the rotary plate, it is possible to obtain an effect that the foreign matter can be prevented from flowing into the gap between the main body and the rotary plate.

Further, according to the present invention, by preventing foreign substances from flowing into a gap between the main body and the rotating disk, it is possible to obtain an effect that the malfunction of the motor caused by the rotation resistance can be prevented from being induced.

In addition, according to the present invention, it is possible to obtain an effect of preventing the breakage of the main body and the rotary disk due to the rotation resistance by preventing the foreign matter from flowing into the gap between the main body and the rotary disk.

Drawings

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

Fig. 2 is a perspective view schematically showing a cleaner according to an embodiment of the present invention.

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

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

FIG. 5 is a perspective view schematically showing the bottom surface of the main body from which a wiper is removed from the vacuum cleaner of the embodiment of the present invention.

FIG. 6 is an isolated perspective view schematically showing the bottom surface of the main body from which a wiper is removed from the vacuum cleaner of the embodiment of the present invention.

Fig. 7 is a perspective view schematically showing a lower body taken from a vacuum cleaner according to an embodiment of the present invention.

Fig. 8 is an exploded perspective view schematically showing a rotating disk, a bearing, and a shaft taken from the cleaner of the embodiment of the present invention.

Fig. 9 is a sectional view and a partially enlarged view taken along the area I-I' of fig. 5 and schematically showing a prevention part of a first embodiment of a cleaner in accordance with an embodiment of the present invention.

Fig. 10 is a sectional view schematically showing another embodiment of the preventing part of the first embodiment of the cleaner according to the embodiment of the present invention.

Fig. 11 is a sectional view schematically showing a prevention part of a second embodiment of a vacuum cleaner according to an embodiment of the present invention.

Fig. 12 is a sectional view schematically showing another embodiment of the preventing part of the second embodiment of the vacuum cleaner according to the embodiment of the present invention.

Fig. 13 is a sectional view schematically showing still another embodiment of the preventing part of the second embodiment of the cleaner according to the embodiment of the present invention.

Detailed Description

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

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments are shown in the drawings and are intended to be described in detail. It is not intended to limit the present invention to the specific embodiments, but it should be construed to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present 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 terms are only used to distinguish one structural element from another. 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 any combination of or any of a plurality of related recited items.

When it is referred to that a certain structural element is "connected" or "coupled" to another structural element, it is understood that the structural element may be directly connected or coupled to the other structural element or other structural elements may be present therebetween. On the contrary, when it is referred to that one structural element is "directly connected" or "directly coupled" to another structural element, it should be understood that no other structural element exists therebetween.

The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless the context clearly dictates otherwise, expressions in the singular may include expressions in the plural.

In addition, in the present application, it should be understood that terms such as "including" or "having" are only intended to specify the presence of the features, numerals, steps, actions, structural elements, components, or combinations thereof recited in the specification, and do not preclude the presence or addition of one or more other features, numerals, steps, actions, structural elements, components, or combinations 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.

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

The vacuum cleaner of the embodiment of the invention is mainly characterized by the preventing part and the bearing cover part, and the preventing part and the bearing cover part are formed between the main body and the rotating disk, so the vacuum cleaner can be applied to a sweeping robot, a rod type vacuum cleaner directly operated by a user and the like.

Hereinafter, the present invention is described with reference to an embodiment in which the preventing section and the bearing cover section, which are features of the present invention, are applied to a cleaning robot. Of course, the case where the structure of the preventing portion and the bearing cover portion, which are features of the present invention, is applied to the sweeping robot is merely an example, and the present invention may be applied to any vacuum cleaner in which a main body and a rotating disk rotate relative to each other, such as a stick vacuum cleaner.

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

Fig. 2 and 3 are perspective and separated perspective views schematically showing a dust collector according to an embodiment of the present invention, fig. 4 is a perspective view schematically showing a rotating disk and a cloth separated from the dust collector, and fig. 5 and 6 are perspective and separated perspective views schematically showing the bottom surface of a main body from which the cloth is removed from the dust collector. Further, fig. 7 is a perspective view schematically showing a lower main body taken from the cleaner, and fig. 8 is a separated perspective view schematically showing a rotary plate, a bearing, and a shaft taken from the 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 disk 300, and a cloth 20. In addition, the vacuum cleaner 10 of the present invention may be configured by a sweeping robot that can automatically travel to perform cleaning, for example. The cleaner 10 may further include a control portion (not shown), a bumper 190, a first sensor 200, and a second sensor 210 to perform automatic traveling.

The control unit may control operations of the first actuator 160 and the second actuator 170, which will be described later, based on preset information or real-time information. The cleaner 10 may include a storage medium storing an application program to perform control of the control section. The control part may drive an application program according to 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 body 100 and is formed to move relative to the body 100. For example, the bumper 190 may be coupled to the main body 100 so as to be 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 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 can 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 (micro Switch), a photo interrupter (photo interrupter), a Tact Switch (Tact Switch), or the like.

The control part may control the cleaner 10 to be able to avoid the movement in case that the bumper 190 of the cleaner 10 is in contact with the 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 is in contact with an obstacle during the travel of the cleaner 10, the position where the bumper 190 is in contact may be grasped by the first sensor 200, and the control portion may control the operation of the first actuator 160 and/or the second actuator 170 to be disengaged from the contact position.

The second sensor 210 may be configured to be coupled to the main body 100 and sense a relative distance to 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 an obstacle, when the distance between the cleaner 10 and the obstacle is a predetermined value or less.

The main body 100 may form an overall external 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 body 110 and an upper body 120, and components of the cleaner 10 may be disposed in a space formed by combining the lower body 110 and the upper body 120 with each other.

The 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 thus can provide a structure that contributes to stable movement during movement (traveling) and avoids obstacles.

The body 100 may be formed in various shapes, for example, a circular shape, an oval shape, or a quadrangular shape, when viewed from above or below.

The rotary plate 300 has a predetermined area and is formed in the form of a flat plate or a flat frame. Such a rotary plate 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 rotary plate 300 may be formed in a circular plate shape, and the bottom surface of the rotary plate 300 may be formed in a substantially circular shape.

The rotary plate 300 may be formed to be rotationally symmetrical as a whole.

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

The center plate 310 constitutes the center of the rotating 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 to face the bottom surface of the main body 100.

The rotation axis of the rotation plate 300 may be formed in a direction penetrating the center of the center plate 310. In addition, the rotation axis of the rotation plate 300 may be formed in a direction perpendicular to the ground, or may form a predetermined inclination with respect to the direction perpendicular to the ground.

The peripheral plate 320 is configured to surround the central plate 310 in a manner spaced apart from the central plate 310.

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

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

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

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

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

The wipe 20 may be constructed of a wide variety of materials that can wipe the floor while in contact with the floor. Therefore, the bottom surface of the wiper 20 may be formed of a cloth made of a woven or knitted fabric, a nonwoven fabric, a brush having a predetermined area, or the like.

In the cleaner 10, the cloth 20 is configured to be detachably attached to the bottom surface of the rotary plate 300, and is coupled to the rotary plate 300 to rotate together with the rotary plate 300. The wipes 20 may be snugly bonded to the bottom surface of the peripheral plate 320 and may be snugly bonded to the bottom surfaces of the central plate 310 and the peripheral plate 320.

The wipe 20 may be removably attached to the rotating disk 300 using a variety of devices and means. In one embodiment, at least a portion of the wipe 20 may be attached to the turntable 300 by hooking, clamping, or the like. In another embodiment, additional means of coupling the wipe 20 and the rotating disk 300 may be provided, such as a clamp. In still another embodiment, one side of a pair of fastening devices (as a specific example of the fastening devices, a pair of magnets interacting with each other by an attractive force, a pair of velcro fasteners (velcro) coupled to each other, or a pair of buttons (male and female) coupled to each other, etc.) constituting a pair and coupled to and separated from each other may be fixed to the cloth 20, and the other side may be fixed to the rotating disk 300.

When the cloth 20 is coupled to the rotating disk 300, the cloth 20 and the rotating disk 300 may be coupled to each other in an overlapping manner, and the cloth 20 may be coupled to the rotating disk 300 in such a manner that the center of the cloth 20 coincides with the center of the rotating disk 300.

The cleaner 10 may be configured to travel straight along the floor. For example, the cleaner 10 may be straight forward (in the X-axis direction) during cleaning, or may be straight rearward when it is desired to avoid obstacles or falls.

The cleaner 10 can be moved while being rotated in the left-right direction (Y-axis direction) by making the rotation speeds of the pair of rotary disks 300 arranged side by side in the left-right direction (Y-axis direction) different from each other. That is, when the rotation speed of the left rotary disk 300 is greater than the rotation speed of the right rotary disk 300 or the left rotary disk 300 rotates and the right rotary disk 300 does not rotate, the cleaner 10 can be moved while rotating in the right direction with respect to the moving direction of the cleaner 10, based on the case where the cleaner is moved in the forward direction by the second sensor 210. Alternatively, when the rotation speed of the right rotary plate 300 is greater than the rotation speed of the left rotary plate 300, or the right rotary plate 300 rotates while the left rotary plate 300 does not rotate, the cleaner 10 may be moved while rotating in the left direction with respect to the moving direction thereof.

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 plate 300.

The first actuator 160 may include a first housing 161, a first motor 162, and one or more first gears 163.

The first housing 161 supports a plurality of components constituting the first actuator 160 and is fixedly coupled to the main body 100.

The first motor 162 may be constituted by an electric motor.

The plurality of first gears 163 are rotated in mesh with each other, connect the first motor 162 and the shaft 400 fastened to the rotary plate 300, and transmit the rotational power of the first motor 162 to the shaft 400 to rotate the rotary plate 300. Accordingly, when the rotation shaft of the first motor 162 rotates, the rotation disk 300 rotates.

The second actuator 170 is coupled to the main body 100 to rotate the second rotating disk 20.

The second actuator 170 may include a second housing 171, a second motor 172, and one or more second gears 173.

The second housing 171 supports a plurality of components constituting the second actuator 170, and is fixedly coupled to the main body 100.

The second motor 172 may be constituted by an electric motor.

The plurality of second gears 173 are rotated in mesh with each other, connect the second motor 172 and the shaft 400 fastened to the rotating disk 300, and transmit the rotational power of the second motor 172 to the shaft 400 to rotate the rotating disk 300. Accordingly, when the rotation shaft of the second motor 172 rotates, the rotation disk 300 rotates.

As described above, in the cleaner 10, the rotating 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, it is possible to minimize the loss of power transmitted from the first and second actuators 160 and 170 to the rotary disk 300. In addition, the load of the first and second actuators 160 and 170 may be applied to the rotating disk 300 side, so that the cloth 20 is wiped while sufficiently rubbing against the floor surface.

Wherein the first actuator 160 and the second actuator 170 may be symmetrical (left-right symmetrical) to each other.

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

The shaft 400 may include a gear fastening portion 410, a bearing fastening portion 420, and a rotating disk fastening portion 430. The shaft 400 may be fastened and fixed to the rotary plate 300 by the fastening pin 440 in a state of being inserted into the rotary plate 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 flat surface may be formed at the gear fastening portion 410 to be in flat contact with the first gear 163 or the second gear 173, so that it is possible to prevent the generation of the slip between the first gear 163 or the second gear 173.

The rotating disk fastening portion 430 is formed at the other side end of the shaft 400 to be insertedly fastened to the rotating disk 300. Further, the rotating disk fastening part 430 may be formed with at least any one flat surface to be in flat contact with the rotating disk 300, so that it is possible to prevent a slip from being generated between the rotating disk 300.

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

In a state where the rotating disk fastening portion 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, such as insertion fastening to the shaft 400 by pressing, or screw fastening to the shaft 400 by forming a male thread on a surface thereof inserted into the shaft 400.

The battery 220 is coupled to the main body 100 and supplies power to other components constituting the vacuum cleaner 10. The battery 220 may provide 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, a charging terminal for charging the battery 220 may be provided at one side of the main 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 form 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 a hose (tube) or pipe (pipe) form, and 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 opposite end connected to the water tub 230 is positioned on the upper side of the spin plate 300, whereby the liquid inside the water tub 230 can be supplied to the cloth 20 side through the penetration holes 340 of the spin plate 300.

In the vacuum cleaner 10, the water supply pipe 240 may be divided into two pipes, and in this case, the ends of the divided pipes may be located above the pair of rotary plates 300.

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

With such a structure, when the cleaner 10 sprays the liquid stored in the water tub 230 from the upper side of the rotary plate 300 through the water supply pipe 240, the liquid may be supplied to the cloth 20 through the penetration holes 340 formed in the rotary plate 300. Thus, the liquid can be periodically supplied to prevent the wiper 20 from drying, 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 disc.

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

Fig. 9 is a sectional view and a partially enlarged view taken in the area I-I' of fig. 5 and schematically showing a prevention part of a first embodiment of the cleaner, and fig. 10 is a sectional view schematically showing another embodiment of the prevention part of the first embodiment.

The main body 100 of the vacuum cleaner 10 according to the embodiment of the present invention is configured by the lower main body 110 and the upper main body 120 (see fig. 3), and the rotary plate 300 and the prevention unit are components provided in the lower main body 110, and therefore, the lower main body 110 will be described below as a reference.

Referring to fig. 5 to 9, the cleaner 10 according to the embodiment of the present invention includes a prevention part provided to at least any one of the lower main body 110 and the rotary plate 300 to minimize an interval between the lower main body 110 and the rotary plate 300 and prevent foreign substances from flowing between the lower main body 110 and the rotary plate 300. That is, the prevention part is provided at the lower body 110 and/or the rotary disk 300, and functions as a blocking film at a gap formed between the lower body 110 and the rotary disk 300, thereby preventing foreign substances from flowing between the lower body 110 and the rotary 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 rotary disk 300 and formed to protrude in a ring shape from the lower body 110 to surround the rotary disk 300. That is, the outer rib 610 may be disposed radially outward of the turntable 300, and may prevent foreign substances from flowing in the radial direction of the turntable 300.

The outer rib 610 may be disposed apart from an end of the rotary disk 300 to prevent contact with the rotary disk 300. That is, if the outer side end of the rotary disk 300 is in contact with the outer side rib 610, the outer side rib 610 generates contact resistance when the rotary disk 300 rotates, thereby possibly causing a problem that the rotary disk 300 cannot generate a desired rotational force. In addition, a load acting on the motor may cause a reduction in energy efficiency and a failure of the motor. Therefore, the outer rib 610 is disposed to surround the outer end of the rotary plate 300 and formed to have a predetermined gap so as not to restrict the rotation of the rotary plate 300.

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

Here, when the outside rib 610 is protruded to be formed to have a protrusion height completely surrounding the outside of the rotary disk 300 in the thickness direction of the rotary disk 300, the outside rib 610 generates contact resistance with the cloth attached to the rotary disk 300, thereby possibly causing a problem of a rotational force acting as resistance to the rotary disk 300.

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

Therefore, the outer rib 610 may be formed with a protruding height of the area a forming a prescribed area overlapping the spin disk 300 in the thickness direction of the spin disk 300 to prevent contact resistance with the cloth from being generated and to prevent a gap from being generated in the radial direction of the spin disk 300 to prevent inflow of foreign substances.

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

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

Wherein the inner rib 620 is formed such that its protruding end protrudes toward the upper side of the rotary disk 300 without contacting the upper side of the rotary disk 300. That is, if the inner rib 620 is in contact with the upper side of the rotary disk 300, a problem of a rotational force acting as resistance to the rotary disk 300 may be caused.

Further, the inner rib 620 guides the inflow foreign substances to be discharged through the through-hole 340 formed in the rotary 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 central 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 substances are prevented from flowing into between the lower body 110 and the rotary disk 300 by the outer ribs 610, but minute substances such as liquid, dust, hair, etc. may flow into between the gaps formed between the rotary disk 300 and the outer ribs 610. The foreign substances flowed in this way may flow into the rotation shaft of the rotation disk 300, i.e., the shaft 400 and the bearing 500 side, along the gap between the lower body 110 and the rotation 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.

Therefore, the inner rib 620 is formed to protrude from the lower body 110 toward the central plate 310 or the through hole 340 of the rotary disk 300 to block a moving path, so that even if foreign substances flow between the lower body 110 and the rotary disk 300 through the outer rib 610, the inflow foreign substances cannot move toward the bearing 500, and the blocked foreign substances are guided to fall toward the through hole 340 of the rotary disk 300 to be discharged to the outside.

The prevention part of the first embodiment of the present invention may further include a center rib 630, the center rib 630 being formed to protrude in a ring shape from the lower body 110 toward the rotary disk 300 between the outer side rib 610 and the inner side rib 620.

The center rib 630 is formed near the center region between the outer side rib 610 and the inner side rib 620, so that even if foreign substances flow into between the lower body 110 and the rotary disk 300, the speed of the inflow toward the rotation shaft of the rotary disk 300, that is, 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 and

inner ribs

610 and 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 center 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 substances from moving in the direction of the rotation axis of the rotary disk 300.

If the central rib 630 is formed to have a height similar to the protruding height of the inner rib 620 so as to block the foreign substances from moving in the direction of the rotation axis of the rotary plate 300, the foreign substances are accumulated between the central rib 630 and the outer rib 610 and cannot be discharged to the outside, and thus, when accumulated to a predetermined amount or more, a problem of the rotational force acting on the rotary plate 300 as resistance may be caused.

Accordingly, the central rib 630 may be formed to reduce the moving speed of the inflow foreign substances and to allow the protrusion height of the movement of the inflow foreign substances so that the inflow foreign substances are discharged to the outside through the penetration holes 340 of the rotary disk 300.

According to such a structure, the preventing part of the first embodiment of the present invention can prevent inflow of foreign substances for the first time by the outer ribs 610 at the outermost sides of the rotary disk 300, and if there is inflow of foreign substances, can also reduce the moving speed of the inflow of foreign substances by the central ribs 630, and the inner ribs 620 can guide the inflow of foreign substances to the through holes 340 of the rotary disk 300 to discharge the inflow of foreign substances to the outside. Therefore, foreign matter can be prevented from flowing into the shaft 400 or the bearing 500 side and acting as resistance on the rotation or damaging the components.

Fig. 11 to 13 are sectional views schematically illustrating a stopper part of a second embodiment of a vacuum cleaner according to an embodiment of the present invention. Fig. 11 to 13 are views based on the same portion as the enlarged portion shown 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 center rib 630 may be formed to protrude in a ring shape from the lower body 110 toward the rotary disk 300. Such a center 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 rotary disk 300.

Wherein the center rib 630 is formed such that its protruding end protrudes toward the upper side of the rotary disk 300 without contacting the upper side of the rotary 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 as a resistance to the rotating disk 300 may be caused.

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

Wherein the auxiliary rib 640 is formed such that its protruded end is protruded toward the lower side of the lower body 110 without contacting the lower side of the lower body 110. That is, if the auxiliary rib 640 is in contact with the lower side of the lower body 110, a problem of a rotational force acting as resistance to the rotating disk 300 may be caused.

In addition, the auxiliary rib 640 may be configured to be disposed adjacent to the inner side of the central rib 630 while maintaining a minimum interval not contacting the central rib 630.

That is, if the auxiliary rib 640 contacts the center rib 630, the center rib 630 generates contact resistance when the rotary disk 300 rotates, thereby possibly causing a problem that the rotary disk 300 cannot generate a desired rotational force.

Further, when the interval between the auxiliary rib 640 and the central rib 630 is formed to be large, the blocking effect is reduced, and therefore, it is possible to prevent inflow of foreign substances by forming the interval between the auxiliary rib 640 and the central rib 630 to be a minimum interval not to contact each other.

That is, as shown in fig. 11, when foreign substances flow in the radial direction of the turntable 300, even if small foreign substances having small particles flow into the gap between the turntable 300 and the central rib 630, the movement of the foreign substances is blocked by the auxiliary rib 640, and thus the foreign substances can be prevented from flowing into the inside.

According to such a structure, the preventing part of the second embodiment of the present invention includes the central rib 630 and the auxiliary rib 640 to have a gap of a concave-convex form between the lower body 110 and the turntable 300, thereby preventing the foreign materials from flowing in the rotation axis direction of the turntable 300.

Further, referring to fig. 12, the preventing part of the second embodiment of the present invention may further include an inside rib 620, the inside rib 620 being formed to protrude in a ring shape from the lower body 110 toward the rotary disk 300 between the center rib 630 and the rotary shaft of the rotary disk 300.

Wherein the inner rib 620 is formed such that its protruding end protrudes toward the upper side of the rotary disk 300 without contacting the upper side of the rotary disk 300. That is, if the inner rib 620 contacts with 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 raised.

For this, as shown in fig. 12, the inner rib 620 may be formed to protrude from the lower body 110 toward the central 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 substances are prevented from flowing into between the lower body 110 and the rotary disk 300 by the central rib 630 and the auxiliary ribs 640, but minute substances such as liquid, dust, etc. may flow into between the gaps formed between the central rib 630 and the auxiliary ribs 640. The foreign substances flowed in this way may flow into the rotation shaft of the rotation disk 300, i.e., the shaft 400 and the bearing 500 side, along the gap between the lower body 110 and the rotation 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.

Therefore, the inner rib 620 is formed to protrude from the lower body 110 toward the central plate 310 or the through-hole 340 of the rotary disk 300 to block a moving path, so that even if foreign substances flow between the lower body 110 and the rotary disk 300 through the central rib 630 and the auxiliary rib 640, the inflow foreign substances cannot move toward the bearing 500, and the blocked foreign substances are guided to fall toward the through-hole 340 of the rotary disk 300 to be 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, the outer rib 610 being disposed radially outward of the rotary disk 300 and formed to protrude in a ring shape from the lower body 110 to surround the rotary disk 300. That is, the outer rib 610 may be disposed radially outward of the rotary plate 300, and may prevent foreign substances from flowing in the radial direction of the rotary plate 300 for the first time.

The outer rib 610 may be disposed apart from an end of the rotary disk 300 to prevent contact with the rotary disk 300. That is, if the outer side end of the rotary disk 300 is in contact with the outer side rib 610, the outer side rib 610 generates contact resistance when the rotary disk 300 rotates, thereby possibly causing a problem that the rotary disk 300 cannot generate a desired rotational force. Therefore, the outer rib 610 is disposed to surround the outer end of the rotary plate 300 and formed to have a predetermined gap so as not to restrict the rotation of the rotary plate 300.

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

Accordingly, the outer rib 610 may be formed with a protruding height forming a region overlapping the rotating disk 300 by a prescribed region in the thickness direction of the rotating disk 300 to prevent contact resistance with the wiper from being generated, and to prevent a gap from being generated in the radial direction of the rotating disk 300 to prevent inflow of foreign substances.

According to such a structure, the preventing part of the second embodiment of the present invention can prevent inflow of foreign substances for the first time by the outer rib 610 at the outermost side of the rotary disk 300, and also prevent movement of the inflow foreign substances for the second time by the central rib 630 and the auxiliary rib 640 if there are the inflow foreign substances, and the foreign substances passing through the central rib 630 and the auxiliary rib 640 can be guided to the through-hole 340 of the rotary disk 300 by the inner 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 and acting as resistance on the rotation or damaging the components.

The cleaner 10 of the embodiment of the present invention may further include a bearing cover part 800 preventing foreign substances from flowing into the bearing 500.

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

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

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

The supporting 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 support part 810 protrudes at a protruding height similar to the inner rib 620 described above, so that it is possible to block foreign substances flowing between the lower body 110 and the rotating disk 300 from flowing in a radial direction.

The cover 820 is formed to protrude from the support 810 in the rotation axis direction of the rotary disk 300 and to cover at least a part of the lower side 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 substances into the bottom surface of the bearing 500.

According to such a configuration, the support part 810 covers the side surface of the bearing 500, and the cover part 820 covers the bottom surface of the bearing 500, so that even when foreign substances flowing between the lower body 110 and the rotary disk 300 are not discharged from the through hole 340 of the rotary disk 300 and a part of the foreign substances move toward the bearing 500, the foreign substances can be prevented from flowing into the bearing 500 by the support part 810 and the cover part 820 of the bearing cover part 800.

Therefore, the dust collector of the embodiment of the invention comprises a preventing part and a bearing cover part, wherein the preventing part firstly blocks foreign matters from flowing into the space between the main body and the rotating disk, and the bearing cover part secondly blocks when a part of the foreign matters move towards the bearing side, thereby preventing the foreign matters from flowing into the bearing and the shaft.

While the present invention has been described in detail with reference to the specific embodiments thereof, it should be understood that the present invention is not limited thereto, but may be modified or improved by those skilled in the art.

While the invention has been described with reference to specific embodiments, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A vacuum cleaner, comprising:

a main body;

a rotary plate rotatably coupled to the main body, and a wiper facing the floor is coupled to a lower side of the rotary plate; and

and a prevention part provided to at least one of the main body and the rotary disk to minimize an interval between the main body and the rotary disk so as to prevent foreign substances from flowing between the main body and the rotary disk.

2. The vacuum cleaner of claim 1,

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 central plate, the peripheral plate being disposed along a periphery of the central plate; and

and spokes connecting the central plate and the peripheral plate, wherein the spokes are provided with a plurality of through holes and are arranged at intervals along the circumferential direction of the central plate to form through holes.

3. The vacuum cleaner of claim 2,

the prevention section includes:

an outer rib formed in an annular projection from the main body and arranged radially outside the rotary disk so as to surround the rotary disk; and

an inner rib formed to protrude in a ring shape from the body toward the rotary disk between the outer rib and a rotation shaft of the rotary disk.

4. The vacuum cleaner of claim 3,

the outboard rib is disposed spaced from an end of the rotary disk so as not to contact the rotary disk.

5. The vacuum cleaner of claim 3,

the outer rib is configured such that a projection height thereof overlaps the rotary disk by a prescribed area in a thickness direction of the rotary disk.

6. The vacuum cleaner of claim 3,

7. The vacuum cleaner of claim 3,

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

8. The vacuum cleaner of claim 3,

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

9. The vacuum cleaner of claim 3,

the prevention part further includes:

a central rib formed in an annular protrusion from the main body toward the rotary disk between the outer rib and the inner rib.

10. The vacuum cleaner of claim 9,

the central rib is formed to protrude from the main body toward the peripheral plate.

11. The vacuum cleaner of claim 9,

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

12. The vacuum cleaner of claim 2,

the prevention section includes:

a central rib formed in an annular protrusion from the main body toward the rotary disk; and

an auxiliary rib formed in an annular protrusion from the rotating disk toward the main body.

13. The vacuum cleaner of claim 12,

the auxiliary rib is disposed adjacent to an inner side of the central rib and maintains a minimum interval not contacting the central rib.

14. The vacuum cleaner of claim 12,

the prevention part further includes:

an inner rib formed to protrude in a ring shape from the main body toward the rotary disk between the center rib and the rotary shaft of the rotary disk.

15. The vacuum cleaner of claim 14,

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

16. The vacuum cleaner of claim 14,

the prevention part further includes:

and an outer rib formed in an annular protrusion from the main body and disposed radially outward of the rotary disk to surround the rotary disk.

17. The vacuum cleaner of claim 16,

the outer rib is disposed so as to be spaced apart from an end of the rotary disk so as not to contact the rotary disk, and the outer rib is disposed so that a projection height thereof overlaps the rotary disk in a thickness direction of the rotary disk by a predetermined region.

18. The vacuum cleaner of claim 1,

the main body includes:

a bearing fastening part for supporting and rotating a bearing of a shaft fastened to the rotating disk to provide a rotating power,

the cleaner further includes:

and a bearing cover portion protruding from the bearing fastening portion toward the rotary disk side to minimize an interval between the main body and the rotary disk to prevent foreign substances from flowing into the bearing side.

19. The vacuum cleaner of claim 18,

the bearing cover portion includes:

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

and a cover portion formed to protrude from the support portion in a direction of the rotation axis and to cover at least a portion of a lower side surface of the bearing.

20. The vacuum cleaner of claim 1,

the rotating disc is provided with a plurality of rotating discs which are combined with the main body in a rotatable way,

the prevention portions are respectively formed between the main body and the plurality of rotating disks.