KR20220012783A - Cleaner - Google Patents

Abstract

A cleaner is disclosed. The cleaner according to one embodiment of the present invention comprises: a brush; and a removal member located adjacent to the brush. The brush is rotated such that waste including hair lying on a floor surface is collected. The collected waste including hair is pushed by the removal member and can be separated from the brush, and the waste including hair, which has been separated from the brush, can pass through a nozzle housing and can be collected in a dust canister. Therefore, the waste including hair, which has been attached, can be easily separated and collected, without a separate removal process, thereby being able to improve user convenience.

Description

Cleaner {Cleaner}

The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner having a structure capable of effectively collecting materials that are easily adhered but not easily separated, such as hairs and fibers.

The cleaner (cleaner) refers to a device capable of performing a cleaning operation by a manual operation of a user or by self-driving. The cleaning operation using a vacuum cleaner is widely used because the cleaning effect and user convenience can be improved compared to the case of using a broom or a mop, which are traditional cleaning tools.

The vacuum cleaner can be used both indoors and outdoors. However, the vacuum cleaner is generally used indoors rather than outdoors due to issues such as power supply and hygiene.

The vacuum cleaner may be divided into a manual vacuum cleaner that a user grips and directly manipulates, and a robot cleaner that autonomously drives and performs cleaning tasks.

In the case of a manual vacuum cleaner, the user directly moves the cleaner and performs the cleaning operation. Accordingly, one of the characteristics of the manual vacuum cleaner is lightness and portability.

In the case of an automatic robot cleaner, for the purpose of minimizing the power required for self-driving, it is also characterized by lightness and mobility.

Lightness depends not only on the material from which the vacuum cleaner is manufactured, but also on its size and volume. In this case, when the vacuum cleaner is excessively miniaturized in consideration of lightness, it is difficult to provide a dust container having a sufficient capacity to store dust or garbage collected while performing a cleaning operation.

Accordingly, a general vacuum cleaner is manufactured in a direction to pursue lightness while maximizing the amount of dust or garbage that can be accommodated. That is, there is a limit to the increase in size and volume of the cleaner.

Meanwhile, as the number of members constituting a home, such as single-person households, is decreasing, the number of households raising companion animals is increasing. However, compared to humans, companion animals have more hair and fall out easily. Companion animal fur is generally larger, lighter, and longer in length than normal dust or small garbage.

When cleaning is performed in an environment where companion animals are kept, the garbage collected by the vacuum cleaner includes pet hair, etc. In addition, body hair that is removed from the body of the user and the person living with him/her may also be included in the garbage collected by the cleaner.

Garbage such as hair, fiber strands, or companion animal hair has a property of easily adhering to an object having a rough surface by electrostatic attraction. At the same time, the garbage is not easily separated from the surface of the adhered object.

Accordingly, when the garbage is adhered to the surface of a textile object such as a carpet or rug, it is not easy to separate it using a cleaner. Even when the household cleaner collects the garbage while traveling on a surface such as a carpet or rug, it is difficult to separate the garbage from the robot cleaner.

Accordingly, not only the efficiency of the cleaning operation and user convenience are reduced, but there is also a concern that the cleaner may malfunction or be damaged by the garbage adhering to the cleaner.

Japanese Patent Laid-Open Publication No. 2009-0207646 discloses a manual cleaning tool. Specifically, it discloses a manual cleaning tool that is operated by a user, rotates in one direction, and includes a plurality of brushes for removing dust by pushing and removing a herpes body for collecting dust and dust attached to the outer periphery of the herpes body. Here, the manual cleaning tool means a cleaning tool operated only by the user's force without using a separate power.

However, this type of manual cleaning tool operates in such a way that it collects dust only when it is rotated in one direction, and the collected dust is removed only when it is rotated in the opposite direction. That is, the prior literature does not suggest a method for collecting dust regardless of the rotation direction and removing the collected dust.

In addition, in the prior literature, only the herpes body is rotated, and the plurality of brushes are not rotated separately. Therefore, there is a limit that the collected dust is removed only when the herpes body is moved toward the plurality of brushes.

Moreover, the herpes body of the prior literature can collect dust only when the user applies force to operate. The prior document discloses only a mechanism for collecting dust that has already been collected in a dust bin. That is, the prior literature does not suggest a method for automatically collecting dust without a user's external force or for removing dust sporadically adhering to the nozzle unit.

Chinese Laid-Open Patent Document No. 109199228 discloses a dust collector. Specifically, a dust collector having a structure capable of removing hairs or the like adhered to a collected cylindrical brush is disclosed, including a hair device and a razor that are detachably coupled to a housing.

However, in this type of dust collector, the function can be realized only when the hair device and the laser are separately provided and combined. That is, there is an inconvenience of separately storing and installing the hair device and the laser depending on the use state.

In addition, the hair device and the laser disclosed in the prior document are coupled to the housing until contacted with the cylindrical brush. Therefore, there is a risk that the cylindrical brush itself may be damaged by the hair device or the laser as the user's inexperienced operation or use progresses.

US Patent Document No. 9220386 discloses a robot cleaner. Specifically, a robot cleaner having a structure capable of collecting garbage existing on the ground using a plurality of rollers is disclosed.

However, this type of robot cleaner has a limitation that actuators for operating each roller must be provided, respectively. Accordingly, there is a concern that the size of power required to operate the robot cleaner is increased, and the overall size of the robot cleaner is increased.

Furthermore, the robot cleaner disclosed in the preceding document has a structure in which a thrust in an upward direction is applied to garbage caught between brushes provided on each roller. Accordingly, the purpose can only be achieved if the roller is rotated at the correct angle as intended.

That is, depending on the environment in which the robot cleaner disclosed in the prior document is operated, there is a fear that the objective may not be achieved.

Korean Patent Document No. 10-1981827 discloses a cleaning device for a nozzle of a vacuum cleaner. More particularly, it discloses a cleaning apparatus for a nozzle of a vacuum cleaner comprising a socket for receiving a vacuum cleaner nozzle and a cleaning member disposed within the socket to remove items entangled therein while the rotatable member rotates.

By the way, the cleaning device for nozzles of this type of vacuum cleaner is arranged in a charging stand for charging the vacuum cleaner. Therefore, after the user completes the use of the vacuum cleaner, it is inconvenient to operate the vacuum cleaner again after it is seated on the charging stand.

Korean Patent Laid-Open Publication No. 10-2020-0028580 discloses a comb for pets capable of removing hair by suction and a vacuum cleaner including the same. Specifically, it discloses a comb for pets provided inside the body case and including a roll comb for combing the pet's hair, and a rake for removing hair caught in the roll comb, and a vacuum cleaner including the same.

However, this type of pet comb and vacuum cleaner including the same has a limitation in that it can be applied only to a handy type cleaner, not a robot cleaner or a large vacuum cleaner, due to its use.

In addition, since both the roll comb part and the rake part are provided in the shape of a rake, there is also a limit in that it is difficult to remove the hairs tangled in each rake.

Japanese Laid-Open Patent Document No. 2009-207646 (2009.09.17.) Chinese Patent Publication No. 109199228 (2019.01.15.) US Patent Publication No. 9220386 (2015.12.29.) Korean Patent Document No. 10-1981827 (2019.05.23.) Korean Patent Publication No. 10-2020-0028580 (2020.04.08.)

An object of the present invention is to provide a cleaner having a structure capable of solving the above-described problems.

First, an object of the present invention is to provide a vacuum cleaner having a structure capable of easily collecting waste in the form of hairs or fibers scattered indoors and the like.

Another object of the present invention is to provide a cleaner having a structure capable of easily separating and collecting collected hair or fiber-type garbage.

Another object of the present invention is to provide a cleaner having a structure capable of easily discharging collected hair or fiber-type garbage.

Another object of the present invention is to provide a cleaner having a structure capable of minimizing the number of components that provide power to a member for achieving the above object.

Another object of the present invention is to provide a cleaner having a structure that can simplify the structure of a member for achieving the above object.

Another object of the present invention is to provide a cleaner having a structure capable of being reduced in size while achieving the above object.

Another object of the present invention is to provide a cleaner having a structure that can be applied to other types of cleaners while achieving the above object.

In order to achieve the above object, the present invention provides a cleaner having the following structure.

First, the vacuum cleaner is provided with a nozzle housing communicating with the dust container inside. The nozzle housing includes a frame forming an outer shape and a brush rotatably provided to the frame.

The brush can be rotated clockwise or counterclockwise. A part of the brush is partially exposed to the outside of the nozzle housing, and comes into contact with garbage such as hairs located on the ground or the floor.

An adhesive member is provided on the outer periphery of the brush. The adhesive member is formed of a material having high roughness and frictional force. As the brush is rotated, garbage such as hairs positioned on the floor adheres to the adhesive member.

The nozzle unit is provided with a removal member. The removing member separates garbage such as hairs adhering to the adhesive member from the adhesive member. Garbage such as separated hair flows through the nozzle housing into the dust bin of the vacuum cleaner.

In one embodiment, the removing member is positioned adjacent to the adhesive member. That is, the removing member may be in contact with the adhesive member or may be disposed to be spaced apart by a minute distance. The removing member pressurizes garbage such as hair adhering to the adhesive member to separate it from the adhesive member.

In one embodiment, the removal member is rotated. Specifically, the removing member may reciprocate along the outer periphery of the adhesive member by a predetermined distance. That is, the removing member is rotated clockwise and counterclockwise from the radially outer side of the adhesive member in the outer circumferential direction of the adhesive member.

A member made of the same material as the adhesive member is provided on one surface of the removing member facing the adhesive member, that is, the inner surface of the extension. That is, a member made of a material having high roughness and frictional force is provided on the inner surface of the removing member. The members may be in contact with the adhesive member or may be spaced apart from each other by a small distance. In either case, the member may come into contact with garbage such as hair adhered to the adhesive member.

The adhesive member may have directionality. That is, in the adhesive member, an inclination along one of a direction in which the brush is rotated and a direction opposite thereto may be formed more gently than an inclination along the other direction.

Similarly, the member provided on the inner surface of the removing member may also have directionality. That is, in the member, an inclination along one of a direction in which the brush is rotated and a direction opposite thereto may be formed more gently than an inclination along the other direction.

In various embodiments, the directionality of the adhesive member and the directionality of the member provided on the inner surface of the removal member may be variously combined.

The brush is rotated by the power unit. The power unit may be disposed at any one or more of the ends in the axial direction in the direction in which the brush extends.

The main gear is connected to the brush. When the power unit is activated, the main gear can be rotated together with the brushes. In one embodiment, the main gear may be disposed to surround the outer periphery of the end of the brush.

The main gear is gear-engaged with the sub gear. When the main gear is rotated, the sub gear can also be rotated. At this time, by adjusting the gear ratio of the main gear and the sub gear, the rotation speed of the sub gear may be adjusted faster.

The sub gear is connected to the link part. The link unit links the sub gear and the removal member. The rotation of the sub gear is converted into a reciprocating motion of the removing member through the link portion. In this case, the link unit includes a main link and a main link link-coupled to the removal member, and a sub-link coupled to the sub gear, respectively.

By adjusting the magnitude relationship of the relative lengths of the main link and the sub-link, the moving speed between the main gear, the sub-gear, and the removing member can be adjusted.

As described above, the sub gear rotates faster than the main gear. Accordingly, when the power unit is actuated, the removing member can reciprocate at a faster speed than the brush.

That is, the brush and the removing member can be rotated by a single power unit.

In one embodiment, the removing member is formed to partially cover the outer periphery of the brush. When viewed in the cross-sectional direction, the removing member may be formed in an arc shape surrounding the outer periphery of the brush.

The removing member revolves along the outer periphery of the brush. The central axis of revolution of the removing member may be coaxial with the rotation axis of the brush. At this time, the removing member revolves without rotation. That is, the inner surface of the removing member facing the brush is constantly maintained.

As described above, the removing member moves in one of the clockwise and counterclockwise directions by a predetermined distance along the outer periphery of the brush, and then returns to the other direction. At this time, the removing member revolves on the remaining portion other than the portion where the brush is exposed to the outside.

That is, the removing member is not exposed to the outside of the nozzle housing. In other words, the removing member does not directly contact the bottom surface.

The removing member revolves faster than the rotational speed of the brush. That is, the time required for the removing member to rotate by a certain angle is shorter than the time required for the brush to rotate by the same angle.

In one embodiment, the removal member may be coupled to the brush at a plurality of points. In the above embodiment, a plurality of main gears coupled to the brush may be provided, and may be provided at each end in the extending direction of the brush. In addition, a plurality of sub-gears linked to the removal member may be provided to be gear-coupled to the main gear at each end in the extending direction of the brush.

In the above embodiment, a link portion is also provided and is linked to each of the plurality of sub gears. That is, the removing member is coupled to the brush by a plurality of link portions. Even in this case, since the brush is rotated by a single power unit, a plurality of main gears, sub gears and link units may also be operated by a single power unit.

According to an embodiment of the present invention, the following effects can be achieved.

First, the nozzle unit is provided with a brush. The brush extends in one direction, and the outer periphery is provided with an adhesive member formed of a material such as felt having a high roughness. That is, the adhesive member constitutes the outer peripheral surface of the brush. The brush is partially exposed to the outside of the nozzle housing.

When the cleaner is operated, the adhesive member moves along the floor to be cleaned by rolling movement. The adhesive member is formed of a material having high roughness and frictional force. Due to the characteristics of the material of the adhesive member and its shape, garbage such as hairs remaining on the floor is easily adhered to the adhesive member.

Accordingly, garbage, such as hair, existing in an area passed by the vacuum cleaner may be easily collected.

In addition, the nozzle unit is provided with a removal member. A removal member is positioned adjacent the brush and revolves relative to the brush. A member made of a material such as an adhesive member surrounding the outer periphery of the brush is provided on the inner surface of the removing member, which is the surface facing the brush. The member may be in contact with the adhesive member or spaced apart by a small distance to press waste such as hair adhered to the adhesive member.

At this time, the removing member is rotated at a faster speed than the brush, and is directed in alternating clockwise and counterclockwise directions and reciprocates by a predetermined distance. Accordingly, even when the brush is rotated in any of the clockwise and counterclockwise directions, the removing member can effectively press and remove garbage such as hair adhered to the adhesive member.

The removing member is formed to partially surround the outer periphery of the brush. In this case, the removing member may be positioned to be spaced apart from the outer periphery of the brush by a predetermined distance. Garbage such as hair adhered to the outer periphery of the brush, that is, the adhesive member, passes through the space generated by the separation and is then pressed by the removal member. Accordingly, garbage such as hair adhering to the adhesive member may fall out into the inner space of the nozzle housing in which the brush is accommodated.

Accordingly, the collected waste such as hair can be easily collected in the dust container through the inner space of the nozzle housing and the body without a separate operation.

In an embodiment, in the adhesive member, an inclination along one of a clockwise direction and a counterclockwise direction may be formed more gently than an inclination along the other direction. Likewise, the member provided on the inner surface of the removing member may also have a slope along one of a clockwise direction and a counterclockwise direction, which may be formed more gently than an inclination along the other direction.

That is, the direction in which the member provided on the inner surface of the removing member and the pressure-sensitive adhesive member are gently formed may be in the same direction or in different directions. Accordingly, various combinations are possible depending on whether the vacuum cleaner moves forward or backward, the environment in which the cleaner is used, and the purpose of the cleaning operation.

As a result, garbage such as hair remaining in the environment in which the cleaner is used can be easily collected. In addition, garbage such as collected (ie, sticky) hair may be easily separated from the brush and flowed into the dust bin.

In addition, the dust container is detachably coupled to the body portion. The inner space of the dust container communicates with the inner space of the body part. Through the above-described process, garbage such as hair spread on the floor is collected and then moved to and accommodated in the dust bin.

Accordingly, the user can easily dispose of the collected waste such as hair by separating only the dust container.

Also, a single power unit is coupled to the brush. When the power unit is actuated, the brush is rotated (ie, rotated) in either a clockwise or counterclockwise direction.

The brush is provided with a main gear. When the brush is rotated, the main gear is also rotated.

The main gear is geared with a sub gear positioned radially outward of the brush. When the brush and main gear are rotated, the sub gear is also rotated.

The removing member is link-coupled to the sub gear by the link part. When the sub-gear is rotated, the removal member revolves and reciprocates radially outside the brush by the link movement of the link part.

That is, when a single power unit is actuated, the brushes and the main gear rotate together. In addition, the main gear and the gear-coupled sub gear and the link connected thereto are also rotated. By the link movement of the link portion, the removing member is alternately moved and reciprocated in the clockwise and counterclockwise directions.

Accordingly, when the brush is rotated by a single power unit, the removing member may also be rotated by various couplings. Accordingly, the number of power sources required to rotate the brush and the removing member can be minimized.

Accordingly, as the removing member and the brush are positioned adjacently, the space occupied by the removing member and the brush, respectively, can be minimized. In addition, since the removing member and the brush are coupled by the gear unit and the link unit, the space occupied by the member for coupling the removing member and the brush is also minimized.

Furthermore, the brush, the removing member, the gear unit and the link unit can all be operated by a single power unit.

Accordingly, the size of the entire space occupied by the member for collecting waste such as hair and sending it to the dust bin is reduced. As a result, the structure of the nozzle housing to which the nozzle unit is coupled and the cleaner to which the nozzle housing is coupled can be simplified, and the overall size of the cleaner can be reduced.

In addition, the nozzle housing for accommodating the nozzle part is detachably coupled to the body part. That is, the body of the cleaner is manipulated without coupling the nozzle housing, so that a normal cleaning operation can be performed.

When garbage such as hair stays in the area to be cleaned, the user may perform cleaning by coupling the nozzle housing to the body of the cleaner. Accordingly, the nozzle unit and the nozzle housing may be provided in the cleaner as necessary, thereby improving user convenience and cleaning efficiency.

As the nozzle part and the nozzle housing are detachably provided on the body part, the user can separate the nozzle part and the nozzle housing from the body part and combine them with the body part of another cleaner.

Accordingly, the user can obtain the effect of the cleaner according to the embodiment of the present invention by separately providing the nozzle housing and the nozzle part without purchasing a cleaner including both the nozzle housing and the nozzle part.

Accordingly, the versatility of the nozzle unit, user convenience, and economic efficiency may be improved.

1 is a perspective view illustrating a cleaner according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a nozzle housing provided in the cleaner of FIG. 1 .
3 is a perspective view illustrating a nozzle unit accommodated in the nozzle housing of FIG. 2 .
FIG. 4 is a bottom view showing the nozzle unit of FIG. 3 .
5 is a perspective view illustrating a main brush and a removal member provided in the nozzle unit of FIG. 3 .
6 is a side view illustrating a main brush and a removal member provided in the nozzle unit of FIG. 3 .
7 to 10 are side views illustrating various embodiments of the direction of the member provided on the inner surface of the adhesive member and the removal member provided in the nozzle unit of FIG. 3 .
11 and 12 are perspective views illustrating operation processes of the main brush and the removing member provided in the nozzle unit of FIG. 3 .
13 and 14 are side views illustrating an operation process of the main brush and the removing member provided in the nozzle unit of FIG. 3 .
15 is a conceptual diagram illustrating a process in which garbage such as hair is collected by a cleaner according to an embodiment of the present invention.
16 is a conceptual diagram illustrating a process in which garbage such as hair is pressed and collected by a vacuum cleaner according to an embodiment of the present invention.

Hereinafter, the nozzle unit 60 and the cleaner 1 including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

1. Definition of terms

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be

On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise.

The term "dust" used in the following description refers to fine particles, dust, etc. present in an environment in which a cleaner is operated, such as indoors.

The term "small garbage" used in the following description means garbage of a size that is larger than dust but can be collected by a cleaner.

The term "hair" used in the following description refers to a thin thread-like material that has been removed from animals including humans. The hair may be body hair that has been removed from the human body, hair, or body hair that has been removed from the body of an animal.

The term "fiber" used in the following description means any material in the form of a thin thread except for the hair. In one embodiment, the fiber may be a material removed from clothing, bedding, furniture, and miscellaneous goods.

In the following description, hairs and fibers will be collectively used as terms such as "hair (H)".

The term “cleaner” used in the following description refers to a device capable of performing a cleaning operation by being moved by a user's manual operation or by self-driving.

The cleaner may include a wired cleaner that receives power through a wire, a wireless cleaner that is operated in a wireless manner by a battery, and the like. In addition, the vacuum cleaner may include a robot cleaner that runs by itself and performs a cleaning operation in a preset method.

The terms “front side”, “rear side”, “left”, “right”, “top” and “bottom” used in the following description will be understood with reference to the coordinate system shown in FIG. 1 .

2. Description of the configuration of the cleaner 1 according to the embodiment of the present invention

1 and 2 , a cleaner 1 according to an embodiment of the present invention includes a body 10 , a traveling unit 20 , a dust container 30 , a sensor unit 40 , a nozzle housing 50 and and a nozzle unit 60 .

Hereinafter, each configuration of the cleaner 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings, but the nozzle unit 60 will be described as a separate clause.

(1) Description of the body portion (10)

The body portion 10 forms the outer shape of the cleaner 1 . The body portion 10 may accommodate components for the cleaner 1 to perform a cleaning operation in a space accommodated therein.

The body portion 10 may collide with various obstacles provided in an area in which the cleaner 1 travels, for example, indoors. Therefore, the body portion 10 is preferably formed of a high-rigidity material to prevent damage due to collision.

In addition, the body portion 10 is preferably formed of a lightweight material. This is to reduce the electric power required for the running of the cleaner 1 .

In one embodiment, the body portion 10 may be formed of a synthetic resin such as reinforced plastic.

A user interface may be provided on the outside of the body portion 10 . The user may control the operation of the cleaner 1 by manipulating the user interface. In addition, the user interface may display information about the cleaner 1 and the state of the area in which the cleaner 1 is driven.

The inner space of the body portion 10 may communicate with the outside. Air or small garbage collected while the cleaner 1 runs may pass through the inner space of the body 10 and flow into the dust container 30 that is detachably coupled. In addition, air introduced together with dust or small garbage may be discharged to the outside of the body portion 10 .

Various sensors may be provided in the body portion 10 . That is, in addition to the sensor unit 40 to be described later, the body unit 10 may include a gyro sensor for detecting the inclination of the bottom surface G, and the like.

In the illustrated embodiment, the body portion 10 has a circular cross section and is provided in a disk shape having a predetermined height in the vertical direction. Accordingly, when the cleaner 1 collides with various obstacles while driving, the body 10 may rotate and travel in various directions.

The nozzle housing 50 and the nozzle part 60 accommodated in the nozzle housing 50 are detachably coupled to the body part 10 . The inner space of the nozzle housing 50 may communicate with the inner space of the body 10 and the dust container 30 .

Accordingly, the garbage H, such as hair, collected by the nozzle unit 60 may be introduced and collected into the dust container 30 through the inner space of the body unit 10 .

The traveling part 20 is rotatably coupled to the lower side of the body part 10 .

The driving unit 20 provides power for moving the cleaner 1 . In addition, the driving unit 20 allows the cleaner 1 to rotate to change the driving direction.

The traveling part 20 is located below the cleaner 1 . The traveling part 20 is rotatably coupled to the lower side of the body part 10 .

The traveling unit 20 may be rotated to be provided in a form that can be moved forward or backward. In the illustrated embodiment, the driving unit 20 is provided in the form of a wheel.

A plurality of driving units 20 may be provided. In the illustrated embodiment, the driving unit 20 is provided on the left and right sides of the lower side of the body portion 10, respectively. The rotation speed and rotation direction of each traveling unit 20 positioned on each side may be controlled independently of each other.

Accordingly, the cleaner 1 may be moved forward, backward, left-turned, or right-turned.

Although not shown, the driving unit 20 may be coupled to a power unit (not shown). The power unit (not shown) may be provided in the form of a motor that rotates the driving unit 20 by receiving an electrical signal.

In an embodiment, a plurality of the power unit (not shown) may be provided, and may be respectively coupled to the plurality of driving units 20 . Accordingly, the plurality of driving units 20 may be controlled independently of each other.

The dust bin 30 stores garbage collected while the cleaner 1 runs. In an embodiment, the dust container 30 may contain garbage H such as hair.

A predetermined space is formed inside the dust container 30 . The space communicates with the space formed inside the body portion (10). The garbage collected through the nozzle unit 60 may pass through a space formed inside the body unit 10 and enter the dust container 30 .

To this end, a member (not shown) for applying a conveying force to the collected garbage may be provided in any one or more of the space formed inside the body portion 10 , the dust container 30 , and the nozzle unit 60 . . In one embodiment, the member may be provided in the form of a cyclone.

The dust container 30 is detachably coupled to the body 10 . The user can remove the dust container 30 from the body portion 10 to easily remove the garbage contained in the dust container 30 .

The dust container 30 may be formed of a transparent material. This is to enable the user to visually recognize the amount of garbage accommodated in the dust container 30 to easily determine the time of waste discharge.

Alternatively, the dust container 30 may be provided with a sensor (not shown). In an embodiment, the sensor (not shown) may detect the mass or volume of the garbage accommodated in the inner space of the dust container 30 . The sensed mass or volume is transmitted to the user in the form of visualization information or auditory information, so that the user can easily recognize the time of waste discharge.

The sensor unit 40 detects information on a path along which the cleaner 1 travels.

The sensor unit 40 may be positioned in a direction in which the cleaner 1 is scheduled to travel. In the illustrated embodiment, the sensor unit 40 may be positioned on the front side of the body unit 10 to detect information about the environment on the front side of the cleaner 1 .

The sensor unit 40 may be provided in any form capable of sensing information on the environment of the path on which the cleaner 1 travels or will be driven. In the illustrated embodiment, the sensor unit 40 is provided as a camera capable of detecting image information.

Although not shown, the sensor unit 40 may further include an infrared sensor for detecting a distance from an obstacle or the like.

The nozzle housing 50 is detachably coupled to the lower side of the sensor unit 40 , that is, the lower side of the front of the body unit 10 .

The nozzle housing 50 accommodates the nozzle unit 60 . As the vacuum cleaner 1 runs, the garbage collected by the nozzle unit 60, particularly the garbage H such as hair, passes through the nozzle housing 50 into the space inside the body 10 and into the dust container 30 . can be imported.

The nozzle housing 50 is located on the lower side of the front of the body 10 . When the traveling part 20 is rotated, the lower side of the nozzle housing 50 may be in contact with the bottom surface G or may be spaced apart by a predetermined distance to move together with the body part 10 .

A space is formed inside the nozzle housing 50 . The nozzle unit 60 is accommodated in the space. As will be described later, the nozzle unit 60 includes a frame 100 , a brush 200 rotatably coupled to the frame 100 , and a removal member 300 . The brush 200 and the removing member 300 of the nozzle unit 60 may be rotated in the inner space of the nozzle housing 50 .

The nozzle housing 50 is detachably coupled to the body 10 . When the nozzle housing 50 and the body part 10 are coupled, the internal space of the nozzle housing 50 communicates with the internal space of the body part 10 . Accordingly, the inner space of the nozzle housing 50 may communicate with the dust container 30 .

The nozzle housing 50 is coupled to the body portion 10 to move together, and may have any shape capable of accommodating the nozzle portion 60 therein. In the illustrated embodiment, the nozzle housing 50 has a polygonal prism shape that is elongated in the left and right directions, and protrudes upward at different inclination angles in the front and rear directions.

The nozzle housing 50 may collide with various obstacles provided in an area in which the cleaner 1 travels, for example, indoors. This is due to the nozzle housing 50 being coupled to the body portion 10 so as to be exposed to the outside of the body portion 10 . Therefore, the nozzle housing 50 is preferably formed of a material of high rigidity to prevent damage due to collision.

In addition, the nozzle housing 50 is preferably formed of a lightweight material. This is to reduce the electric power required for the running of the cleaner 1 .

In an embodiment, the nozzle housing 50 may be formed of a synthetic resin such as reinforced plastic.

In the illustrated embodiment, the nozzle housing 50 includes an outer housing 51 , an inner housing 52 , and a communication unit 53 .

The outer housing 51 forms the outside of the nozzle housing 50 . The outer housing 51 is exposed to the outside of the nozzle housing 50 .

A predetermined space is formed inside the outer housing 51 . The inner housing 52 and the nozzle unit 60 accommodated in the inner housing 52 are accommodated in the space. The space communicates with the space formed inside the body portion (10). The communication is achieved by the communication portion 53 .

An inner housing 52 is positioned inside the outer housing 51 .

The inner housing 52 forms the inside of the nozzle housing 50 . The inner housing 52 is not exposed to the outside.

A space is formed inside the inner housing 52 . The nozzle unit 60 is accommodated in the space. The brush 200 and the removing member 300 of the nozzle unit 60 may be rotated while being accommodated in the inner housing 52 .

The nozzle unit 60 may be coupled to the inner housing 52 . Specifically, the frame 100 of the nozzle unit 60 may be coupled to the inner housing 52 .

An opening is formed on one side of the inner housing 52 , on the lower side in the illustrated embodiment. The nozzle unit 60 accommodated in the inner housing 52 may be exposed to the outside of the inner housing 52 through the opening. Accordingly, when the cleaner 1 is driven, various types of garbage located on the floor surface G by the nozzle unit 60 may be collected.

The space formed inside the inner housing 52 communicates with the communication part 53 . Various types of garbage collected by the nozzle unit 60 may pass through the communication unit 53 and may be introduced into the inner space of the body unit 10 and the dust container 30 .

The communicating portion 53 communicates with the inner space of the outer housing 51 and the inner space of the inner housing 52 and the inner space of the body portion 10 .

The communication part 53 may be located in the outer housing 51 . The communication portion 53 is located on one side facing the body portion 10, the upper side of the rear in the illustrated embodiment.

The communication part 53 may be detachably coupled to the body part 10 . By the coupling, the nozzle housing 50 and the body portion 10 may be detachably coupled.

3. Description of the nozzle unit 60 according to an embodiment of the present invention

Referring back to FIGS. 1 and 2 , the cleaner 1 according to the embodiment of the present invention includes a nozzle unit 60 .

The nozzle unit 60 is rotated as the cleaner 1 is operated to collect various types of garbage located on the bottom surface G of the area where the nozzle unit 60 is exposed.

The nozzle unit 60 may be moved together as the cleaner 1 is moved. Accordingly, the nozzle unit 60 may collect garbage in various areas.

The nozzle unit 60 may be accommodated in the nozzle housing 50 and exposed toward the bottom surface G. When the cleaner 1 is driven, the nozzle unit 60 travels in contact with the floor surface G or is spaced apart by a predetermined distance.

The nozzle unit 60 may be rotated. Accordingly, various types of garbage located on the bottom surface G may be collected by the nozzle unit 60 , pass through the nozzle housing 50 , and may be collected in the dust container 30 .

In this specification, it is described on the assumption that the nozzle unit 60 is rotated to collect the garbage H such as hair.

(1) Description of the components of the nozzle unit 60

Hereinafter, components of the nozzle unit 60 according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 10 .

In the illustrated embodiment, the nozzle unit 60 includes a frame 100 , a brush 200 , a removal member 300 , a gear unit 400 , a link unit 500 , and a power unit 600 .

The frame 100 is a portion in which the nozzle unit 60 is coupled to the nozzle housing 50 . In addition, the frame 100 rotatably supports the brush 200 and the removing member 300 .

The frame 100 may be formed of a light-weight and high-rigidity material. In one embodiment, the frame 100 may be formed of a synthetic resin material such as reinforced plastic.

The frame 100 forms a part of the outer shape of the nozzle unit 60 . In the illustrated embodiment, the frame 100 forms the lower side, the left side and the right side of the nozzle unit 60 .

In the illustrated embodiment, the frame 100 includes a lower frame 110 , a side frame 120 , and a support frame 130 .

The lower frame 110 forms a lower side of the frame 100 . The lower frame 110 partially surrounds the lower side of the brush 200 .

The lower frame 110 may be formed in a shape corresponding to the shape of the brush 200 . In the illustrated embodiment, the brush 200 has a cylindrical shape extending in the left and right directions, and the lower frame 110 may also be provided in a plate shape extending in the left and right directions.

An opening is formed in the lower frame 110 . The opening may be formed through the upper and lower portions of the lower frame 110 . A part of the brush 200, a part of the lower side in the illustrated embodiment, may be exposed to the lower side of the lower frame 110 through the opening. Accordingly, the brush 200 may be exposed to the outside of the nozzle housing 50 .

A side frame 120 is positioned at each end in both directions from which the lower frame 110 extends, left and right ends in the illustrated embodiment, respectively.

The side frame 120 forms each end of the frame 100 in the longitudinal direction, in the left-right direction in the illustrated embodiment. The side frame 120 is coupled to an end in each direction in which the brush 200 extends, and left and right ends in the illustrated embodiment, respectively.

A through hole may be formed in any one of the side frames 120 in the longitudinal direction in the side frame 120 positioned on the right side in the illustrated embodiment. A power unit 600 for rotating the gear unit 400 may be through-coupled to the through hole.

The brush 200 and the removal member 300 are rotatably coupled to the side frame 120 . That is, the side frame 120 does not rotate regardless of the rotation of the brush 200 and the removing member 300 . The coupling may be achieved by coupling the support frame 130 with the side frame 120 .

The side frame 120 may be formed in a shape corresponding to the shape of the inner space of the nozzle housing 50 . In the illustrated embodiment, the side frame 120 is provided in a plate shape with an upper end rounded to be convex toward the upper side.

The support frame 130 rotatably couples the brush 200 to the side frame 120 .

A plurality of support frames 130 may be provided. The plurality of support frames 130 may be coupled to the brush 200 and each side frame 120 in the direction in which the brush 200 extends, and in the left-right direction in the illustrated embodiment, respectively. The support frame 130 is positioned between the brush 200 and the side frame 120 .

The support frame 130 may be coupled to the brush 200 . In the illustrated embodiment, the support frame 130 may be positioned in the direction in which the brush 200 extends, that is, at left and right ends, respectively.

A through portion is formed in the center of the support frame 130 . Through the penetrating portion, the brush 200 and the power unit 600 may be coupled. Accordingly, when the power unit 600 is operated, the brush 200 connected thereto is rotated, but the support frame 130 is not rotated.

A detailed description of the rotation process will be described later.

The brush 200 is rotated to collect various types of garbage remaining on the bottom surface (G).

The brush 200 is rotatably coupled to the frame 100 . Specifically, both ends of the brush 200 are rotatably supported by the plurality of side frames 120 . It is as described above that the coupling or support is achieved by the support frame 130 .

The brush 200 is formed to extend in one direction. In the illustrated embodiment, the brush 200 is formed to extend in the left and right direction. It will be understood that the extending direction is the same as the extending direction of the nozzle housing 50 .

Accordingly, when the cleaner 1 is advanced, the area that the brush 200 sweeps may be increased. Accordingly, the cleaning efficiency of the cleaner 1 may be improved.

The brush 200 can be of any shape that can be rotated between the side frames 120 . In the illustrated embodiment, the brush 200 has a circular cross section and has a cylindrical shape extending in the left and right directions.

In the above embodiment, even if the rotation of the brush 200 proceeds, the distance between the center and the outer periphery of the cross section of the brush 200 can be maintained constant, so that an efficient cleaning operation can be performed.

A support frame 130 is rotatably coupled to each end of the brush 200 in the extending direction, left and right ends in the illustrated embodiment, respectively. The support frame 130 is fixedly coupled to the side frame 120 to rotatably support the brush 200 as described above.

The removal member 300 and the support bar 430 of the gear unit 400 are positioned adjacent to the outer periphery of the brush 200 . The brush 200 may be rotated relative to the removing member 300 . Accordingly, garbage H such as hair collected by the brush 200 may be separated, and a detailed description thereof will be described later.

A main gear 410 is positioned on the outer periphery of each end in the direction in which the brush 200 extends, and on each outer periphery of the left and right ends in the illustrated embodiment. The main gear 410 is gear-coupled to each of the sub gears 420 positioned adjacent to the outer periphery of the brush 200 .

Accordingly, when the power unit 600 is operated and the brush 200 is rotated, the main gear 410 , the sub gear 420 and the link unit 500 connected thereto are rotated. As a result, the brush 200 and the removing member 300 can be operated by a single power unit 600 .

The brush 200 may be formed of a light-weight and high-rigidity material. In one embodiment, the brush 200 may be formed of a synthetic resin material such as reinforced plastic.

An adhesive member 210 is provided on the outer periphery of the brush 200 .

The adhesive member 210 forms an outer peripheral surface of the brush 200 . In other words, the adhesive member 210 is provided on the brush 200 to surround the outer peripheral surface of the brush 200 .

The adhesive member 210 may be formed of a material having a predetermined roughness. This is to easily collect garbage (H) such as hairs remaining on the bottom surface (G) by frictional force and electrostatic attraction.

In addition, the adhesive member 210 may be formed of a material having a predetermined adhesive force. This is to facilitate collection by pressing and adhering garbage (H) such as hairs remaining on the bottom surface (G).

In an embodiment, the adhesive member 210 may be formed of a fiber material such as felt, blended yarn, linen, or bristle. Alternatively, the adhesive member 210 may be formed of a material such as rubber, latex, or acrylic.

At this time, it is preferable that the roughness of the surface in the direction in which the pressure-sensitive adhesive member 210 is exposed to the outside, in a direction radially outward with respect to the center of the brush 200 in the illustrated embodiment, is formed to be relatively higher.

As the brush 200 and the adhesive member 210 provided thereto rotate, garbage H such as hairs positioned on the bottom surface G may adhere to the adhesive member 210 . Garbage H such as adhered hair may be separated by the removing member 300 after being rotated together with the brush 200 and the adhesive member 210 . A detailed description thereof will be provided later.

The removing member 300 separates the garbage H adhered to the adhesive member 210 of the brush 200 , in particular, the garbage H such as hair, from the adhesive member 210 . The separated adhesive member 210 may be dropped into the nozzle housing 50 , and may be moved and collected into the dust container 30 through the communication part 53 .

The removing member 300 is positioned adjacent to the brush 200 . In the illustrated embodiment, the removing member 300 is located on the upper portion of the brush 200 .

The removing member 300 may be formed in a shape corresponding to the shape of the outer periphery of the brush 200 . In the illustrated embodiment, the brush 200 has a cylindrical shape having a circular cross-section, and the removing member 300 may be formed in an arc-shaped cross-section having a predetermined curvature.

The removing member 300 is positioned radially outward of the brush 200 . In an embodiment, the center of the cross-section of the removing member 300 may be disposed to have the same center as the center of the cross-section of the brush 200 .

The removing member 300 may extend in the same direction as the brush 200 , in a left-right direction in the illustrated embodiment. Both ends of the removal member 300 in the extending direction, left and right ends in the illustrated embodiment may be coupled to the support frame 130 and the link unit 500, respectively.

The removing member 300 may be formed of a light-weight and high-rigidity material. In an embodiment, the removing member 300 may be formed of a synthetic resin material such as reinforced plastic.

The removing member 300 may be rotated relative to the brush 200 . That is, the brush 200 rotates with the power unit 600 as a rotation axis. The removing member 300 revolves radially outside the brush 200 with the central axis or the power unit 600 of the brush 200 as a rotation axis.

In this case, the removing member 300 may be rotated in the same direction as the rotation direction of the brush 200 or in a different direction. When the removal member 300 is rotated in the same direction as the rotation direction of the brush 200 , garbage H such as hair adhered to the adhesive member 210 may be removed.

In addition, the orbital speed of the removing member 300 may be faster than the rotational speed of the brush 200 . Accordingly, the removal member 300 can quickly remove the garbage H, such as hair, collected by the brush 200 from the radial outside of the brush 200 .

This speed difference is achieved by the gear unit 400 to be described later.

In the illustrated embodiment, the removal member 300 includes an extension portion 310 , a coupling portion 320 , and a link connection portion 330 .

The extension 310 extends between the plurality of side frames 120 . In the illustrated embodiment, the extension portion 310 is formed to extend in the left and right direction.

The extension 310 is positioned radially outward of the brush 200 . In other words, the extension 310 is positioned to be spaced apart from the outer periphery of the brush 200 by a predetermined distance. The predetermined distance is preferably formed to be smaller than the diameter of the garbage (H) such as hair adhered to the adhesive member (210).

Accordingly, when the extension part 310 is rotated, the garbage H such as hairs adhered to the adhesive member 210 may be pressed by the extension part 310 to be detached from the adhesive member 210 .

The extension 310 may be formed to partially cover the outer periphery of the brush 200 . In the illustrated embodiment, the extended portion 310 is formed in the shape of an arc whose cross section partially covers the outer periphery of the brush 200 .

The curvature of the extension part 310 , that is, the curvature of the extension part 310 with respect to the central axis of the brush 200 may be formed to be the same as the curvature of the outer periphery of the brush 200 .

The extension 310 includes an inner surface 311 .

The inner surface 311 may be defined as a surface facing the brush 200 among surfaces of the extension part 310 . In other words, the inner surface 311 may be defined as a surface facing radially inward among the surfaces of the extension part 310 .

The inner surface 311 is formed to partially surround the brush 200 or the adhesive member 210 provided in the brush 200 from the radial outside. The inner surface 311 is formed to extend in the extending direction of the extension part 310, in the illustrated embodiment, in the left and right direction.

A member made of the same material as the adhesive member 210 may be provided on the inner surface 311 (refer to FIG. 6 ). The member may contact and rub against the adhesive member 210 . In addition, the member may press and push garbage such as the hair (H) adhered to the adhesive member 210 .

That is, the garbage (H) such as hair adhered to the adhesive member 210 is caused by contact and friction between the member provided in the extension part 310 and the garbage such as the adhesive member 210 or hair (H). , can be easily separated from the adhesive member 210 .

In each direction in which the extension part 310 is extended, the left and right ends in the illustrated embodiment are respectively extended by the coupling part 320 and the link connecting part 330 .

The coupling part 320 is a part to which the removing member 300 is rotatably coupled to the brush 200 . In other words, the coupling portion 320 is a portion in which the removal member 300 is rotatably coupled to the side frame 120 .

By the coupling unit 320 , even if the power unit 600 is operated and the brush 200 is rotated, the removal member 300 may be rotated (ie, revolved) with respect to the brush 200 irrespective of the rotation. .

The coupling part 320 is continuous with the extension part 310 . The coupling part 320 is formed to extend from the extension part 310 to a radially inward direction of the brush 200 .

The coupling part 320 is continuous with the link connection part 330 . The link connection part 330 is positioned between the extension part 310 and the coupling part 320 .

A plurality of coupling units 320 may be provided. The plurality of coupling parts 320 may be respectively located at respective ends in the direction in which the extension part 310 extends. In the illustrated embodiment, two coupling parts 320 are provided, respectively, located at left and right ends of the extension part 310 .

A link connection part 330 is positioned between the coupling part 320 and the extension part 310 .

The link connection part 330 is a part where the removal member 300 is coupled to the link part 500 . When the link unit 500 is linked, the link connection unit 330 is linked together with the link unit 500 .

Accordingly, the removing member 300 may be rotated by a predetermined distance in a clockwise or counterclockwise direction with respect to the central axis of the brush 200 .

The link connection part 330 may be formed such that the width of its cross-section is reduced in a radially inward direction. This is to prevent unnecessary interference from occurring while the removal member 300 is coupled to the brush 200 and the power unit 600 .

A coupling member such as a pin member may be provided for coupling the link connection unit 330 and the link unit 500 .

Referring back to FIGS. 7 to 10 , the member provided on the inner surface of the adhesive member 210 and the removing member 300 provided in the nozzle unit 60 according to an embodiment of the present invention may be arranged to have a predetermined directionality. can

That is, in the embodiment shown in FIG. 7 , in the adhesive member 210 , the inclination along the counterclockwise direction is formed more gently than the inclination along the clockwise direction. The inner surface 311 of the removal member 300 facing the adhesive member 210 is also formed to have a more gentle inclination along a counterclockwise direction than an inclination along the clockwise direction.

In the embodiment shown in FIG. 8 , in the adhesive member 210 , the inclination along the clockwise direction is formed more gently than the inclination along the counterclockwise direction. On the other hand, the inner surface 311 of the removal member 300 facing the adhesive member 210 is formed to have a more gentle inclination along the counterclockwise direction than the inclination along the clockwise direction.

In the embodiment shown in FIG. 9 , in the adhesive member 210 , the inclination along the counterclockwise direction is formed more gently than the inclination along the clockwise direction. On the other hand, the inner surface 311 of the removal member 300 facing the adhesive member 210 is formed to have a clockwise slope more gently than a counterclockwise slope.

In the embodiment shown in FIG. 10 , in the adhesive member 210 , an inclination along a clockwise direction is formed more gently than an inclination along a counterclockwise direction. The inner surface 311 of the removal member 300 facing the adhesive member 210 is also formed to have a clockwise slope more gently than a counterclockwise slope.

That is, in the embodiment shown in FIGS. 7 and 10 , the member provided on the inner surface 311 of the removing member 300 and the adhesive member 210 are formed to have the same directionality. In addition, in the embodiment shown in FIGS. 8 and 9 , the member provided on the inner surface 311 of the removing member 300 and the adhesive member 210 are formed to have different directions.

The direction may be determined according to an environment in which the cleaner 1 is driven and a user's intention.

For example, in order for the brush 200 to adhere garbage such as the hair H, an inclination along the rotational direction may be formed to be more inclined than in the opposite direction.

That is, in the embodiment shown in FIGS. 7 and 9 , the brush 200 may be rotated counterclockwise. In addition, in the embodiment shown in FIGS. 8 and 10 , the brush 200 may be rotated clockwise.

Accordingly, garbage, such as hairs (H), present on the bottom surface (G) is swept and adhered by a portion having a greater inclination among portions of the adhesive member (210), so that it can be adhered more effectively.

In addition, in order for the removal member 300 to effectively separate the garbage such as the hair H adhering to the brush 200, the inclination along the rotational direction may be formed to be more inclined than in the opposite direction.

That is, in the embodiment shown in FIGS. 7 and 8 , when the removing member 300 is rotated counterclockwise, garbage such as hair H adhered to the adhesive member 210 may be more effectively separated.

Similarly, in the embodiment shown in FIGS. 9 and 10 , when the removing member 300 is rotated clockwise, garbage such as hair H adhered to the adhesive member 210 may be more effectively separated.

That is, it will be understood that the direction of the member provided on the inner surface 311 of the removing member 300 and the adhesive member 210 may be changed according to the environment in which the cleaner 1 is used and the driving direction.

Furthermore, the direction is the structure of the cleaner 1 , that is, the position of the portion where the brush 200 is exposed to the outside, and garbage such as the hair H removed from the brush 200 is collected in the dust container 30 of the cleaner 1 . ) can also be changed depending on the direction of inflow.

Meanwhile, as described above, the removing member 300 may reciprocate by a predetermined distance in a clockwise or counterclockwise direction along the outer circumferential surface of the brush 200 .

Therefore, even if the directionality of the adhesive member 210 and the directionality of the member provided on the inner surface 311 of the removal member 300 are changed, the effect of the cleaner 1 according to the embodiment of the present invention is always achieved above a certain level. It will be understood that

The gear unit 400 transmits the rotation of the power unit 600 to the removal member 300 . Accordingly, both the brush 200 and the removing member 300 may be rotated by a single power unit 600 . Also, by the gear unit 400 , the brush 200 and the removing member 300 may be rotated at different speeds.

The gear unit 400 is connected to the power unit 600 . When the power unit 600 is operated, the gear unit 400 may be rotated.

The gear unit 400 is connected to the link unit 500 . When the gear unit 400 is rotated, the link unit 500 and the removal member 300 connected to the link unit 500 may be rotated.

A plurality of gear units 400 may be provided. In the illustrated embodiment, the gear unit 400 is located on the outer periphery of the main gear 410 provided in the brush 200 and the brush 200 , and a sub gear 420 located adjacent to the main gear 410 . and a support bar 430 connected to the sub gear 420 .

The main gear 410 is coupled to the brush 200 . The main gear 410 may be rotated together with the brush 200 . In the illustrated embodiment, the main gear 410 is formed to protrude radially outward from the outer periphery of the brush 200 . The main gear 410 may be formed to surround the outer periphery of the brush 200 .

The main gear 410 may be provided in any shape capable of being gear-fitted with the sub-gear 420 .

A plurality of main gears 410 may be provided. The plurality of main gears 410 may be respectively coupled to the brush 200 at different positions in the extending direction of the brush 200 and rotate together with the brush 200 .

In the illustrated embodiment, the main gear 410 includes a first main gear 411 positioned on the left and a second main gear 412 positioned on the right. The first main gear 411 is coupled to the left end of the brush 200 . The second main gear 412 is coupled to the right end of the brush 200 .

The main gear 410 may include a plurality of teeth. That is, the main gear 410 may include a plurality of concave portions and a plurality of convex portions alternately disposed with each other along the outer periphery thereof.

In this case, the number of the plurality of concave portions and the plurality of convex portions provided in the main gear 410 may be greater than the number of the plurality of concave portions and the plurality of convex portions provided in the sub gear 420 .

Accordingly, when the power unit 600 rotates, the main gear 410 rotates slower than the sub gear 420 . That is, for a predetermined time, the number of revolutions of the main gear 410 is smaller than the number of revolutions of the sub gear 420 .

Accordingly, when the power unit 600 is rotated, the brush 200 connected to the main gear 410 rotates slower than the removing member 300 connected to the sub gear 420 .

The sub gear 420 is gear-coupled to the main gear 410 . When the main gear 410 is rotated, the main gear 410 and the gear-coupled sub gear 420 are also rotated. At this time, the sub gear 420 is rotated in a direction opposite to the rotation direction of the main gear 410 .

In addition, the rotation speed of the sub gear 420 is faster than the rotation speed of the main gear 410 as described above.

The sub gear 420 may be provided in any shape that can be gear-coupled to the main gear 410 .

A plurality of sub gears 420 may be provided. The plurality of sub gears 420 may be respectively gear-coupled to the plurality of main gears 410 at different positions in the direction in which the brush 200 extends radially outside the brush 200 .

In the illustrated embodiment, the sub gear 420 includes a first sub gear 421 positioned on the left and a second sub gear 422 positioned on the right.

The first sub gear 421 is positioned adjacent to the left end of the brush 200 , and is gear-coupled to the first main gear 411 . The second sub gear 422 is positioned adjacent to the right end of the brush 200 , and is gear-coupled to the second main gear 412 .

The sub gear 420 may include a plurality of teeth. That is, the sub gear 420 may include a plurality of concave portions and a plurality of convex portions alternately disposed with each other along the outer periphery thereof.

In this case, the number of the plurality of concave portions and the plurality of convex portions provided in the sub gear 420 may be smaller than the number of the plurality of concave portions and the plurality of convex portions provided in the main gear 410 .

In addition, as described above, the rotation speed of the sub gear 420 is formed faster than the rotation speed of the main gear 410 .

The plurality of sub gears 420 are respectively coupled to the support bar 430 .

The support bar 430 is coupled to each of the plurality of sub gears 420 to rotatably support the plurality of sub gears 420 .

The support bar 430 may be coupled to the first sub gear 421 and the second sub gear 422 , respectively, and rotate together with the first sub gear 421 and the second sub gear 422 .

The support bar 430 extends in the direction in which the brush 200 extends, in the illustrated embodiment, in the left and right directions. Each end of the support bar 430 in the extending direction is rotatably coupled to each side frame 120 .

Accordingly, the first sub gear 421 and the second sub gear 422 may rotate stably.

The link unit 500 converts the rotational motion of the power unit 600 into a translational motion. Accordingly, when the power unit 600 is operated, the removing member 300 may reciprocate in a clockwise or counterclockwise direction and may perform a translational motion.

The link unit 500 is connected to the sub gear 420 of the gear unit 400 . When the gear unit 400 is rotated, the link unit 500 may be linked.

The link part 500 is connected to the removal member 300 . The removal member 300 may be translated by the link movement of the link unit 500 .

A plurality of link units 500 may be provided. The plurality of link units 500 may be coupled to each other so as to link movement with the removal member 300 and the sub gear 420 . In the illustrated embodiment, the link unit 500 includes a main link 510 coupled to the removal member 300 and a sub link 520 coupled to the sub gear 420 .

The main link 510 link-couples the removal member 300 and the sub-link 520 . The main link 510 is rotatably coupled to the removing member 300 and the sub link 520 , respectively.

The main link 510 is formed to extend in one direction, the front-rear direction in the illustrated embodiment. One end in the direction in which the main link 510 extends, the front end in the illustrated embodiment is rotatably coupled to the link connecting portion 330 of the removing member 300 . The other end in the direction in which the main link 510 extends, in the illustrated embodiment, the rear end is rotatably coupled to the sub link 520 .

The main link 510 may be rotatably coupled to the removing member 300 and the sub link 520 by a pin member, respectively.

A plurality of main links 510 may be provided. The plurality of main links 510 are respectively connected to the link connecting portions 330 provided on both sides in the longitudinal direction of the removing member 300 and to each of the sub-links 521 and 522 positioned adjacent to each of the link connecting portions 330 , respectively. can

In the illustrated embodiment, the main link 510 is provided on the left side of the first main link 511 located adjacent to the first main gear 411 and provided on the right side and adjacent to the second main gear 412 . and a second main link 512 located therein.

The sub link 520 link-couples the main link 510 and the sub gear 420 . The sub link 520 is rotatably coupled to the main link 510 . In addition, the sub link 520 is rotatably coupled together with the sub gear 420 .

That is, when the sub link 520 is rotated, the sub gear 420 may also be rotated. Accordingly, the rotation of the power unit 600 and the main gear 410 may be transmitted to the sub gear 420 through the link unit 500 .

The sub link 520 may be coupled to the support bar 430 . The sub link 520 and the support bar 430 may be rotated together.

Accordingly, when the brush 200 is rotated, the sub link 520 may be rotated together with the sub gear 420 and the support bar 430 .

The sub link 520 is formed to extend in one direction, in the illustrated embodiment, in the vertical direction. In this case, the extended length of the sub link 520 may be shorter than the extended length of the main link 510 .

One end of the sub-link 520 in the extending direction, the upper end in the illustrated embodiment is rotatably coupled to the main link (510). The other end in the direction in which the sub link 520 extends, in the illustrated embodiment, the lower end is coupled to the sub gear 420 .

The sub link 520 and the main link 510 may be rotatably coupled by a pin member. Also, the sub link 520 may be coupled to the sub gear 420 and the support bar 430 by a fastening member (not shown).

A plurality of sub-links 520 may be provided. The plurality of sub-links 520 may be respectively connected to the first and second sub-gears 421 and 422 and the support bar 430 provided on both sides in the longitudinal direction of the removing member 300 .

In the illustrated embodiment, the sub link 520 is provided on the left side of the first sub link 521 coupled to the first main link 511 and the first sub gear 421, and the second main link provided on the right side. 512 and a second sub link 522 coupled to the second sub gear 422 .

The power unit 600 generates power for rotating the brush 200 and the removing member 300 . The power unit 600 is connected to the main gear 410 of the gear unit 400 . The power unit 600 and the main gear 410 may rotate together.

The power unit 600 may be provided in an arbitrary form in which whether the power unit 600 rotates, the rotation direction, and the rotation speed can be controlled by an electrical signal input. In one embodiment, the power unit 600 may be provided as an electric motor (motor).

The power unit 600 is electrically connected to an external power source (not shown) and a control unit (not shown). Power for operating the power unit 600 may be supplied from the power source (not shown). In addition, a control signal for controlling whether the power unit 600 rotates, a rotation direction, a rotation speed, etc. may be applied from the control unit (not shown).

The power unit 600 is connected to the brush 200 . When the power unit 600 is operated, the brush 200 may be rotated. Accordingly, the main gear 410 coupled to the brush 200 may also be rotated.

The power unit 600 may be located adjacent to any one of the first main gear 411 and the second main gear 412 . In the illustrated embodiment, a single power unit 600 is provided and is located adjacent to the second main gear 412 located on the right side.

The power unit 600 may be coupled to the side frame 120 of the frame 100 . Accordingly, the power unit 600 may be stably supported.

A detailed description of a process in which the brush 200 and the removing member 300 are rotated as the power unit 600 is operated will be described later.

(2) Description of the operation process of the nozzle unit 60

In the nozzle unit 60 according to the embodiment of the present invention, the brush 200 and the removing member 300 may be rotated by a single power unit 600 through the above-described configuration.

Hereinafter, an operation process of the nozzle unit 60 according to an embodiment of the present invention will be described in detail with reference to FIGS. 11 to 14 .

The power unit 600 is electrically connected to a power source (not shown) and a control unit (not shown) by a member such as an electric wire. When power and a control signal are applied to the power unit 600 , the power unit 600 is rotated.

The power unit 600 is coupled to the brush 200 . Accordingly, when the power unit 600 is rotated, the brush 200 is also rotated. At this time, the main gear 410 is coupled to each end in the direction in which the brush 200 extends, in the left-right direction in the illustrated embodiment. The main gear 410 is also rotated with the brush 200 .

The main gear 410 is gear-coupled with the sub-gear 420 positioned adjacently. Accordingly, when the main gear 410 is rotated, the sub gear 420 is also rotated. At this time, it will be understood that the rotation directions of the main gear 410 and the sub gear 420 are opposite to each other.

Accordingly, the link unit 500 connected to the sub gear 420 is also rotated. Since the link part 500 is link-coupled to the removal member 300 , the removal member 300 reciprocates by the rotation of the link part 500 .

The removing member 300 is rotated alternately in the same direction as the rotation direction of the brush 200 and in a different direction.

That is, in the embodiment shown in FIG. 13 , the removing member 300 is rotated counterclockwise. Also, in the embodiment shown in FIG. 14 , the removing member 300 is rotated clockwise.

As the operation of the power unit 600 continues, the removing member 300 repeats the rotation. Accordingly, garbage H, such as hair, adhered to the adhesive member 210 of the brush 200 may be pressed by the removal member 300 to be detached from the brush 200 .

4. Description of the process in which garbage (H) such as hair is collected and separated by the nozzle unit 60 and the cleaner 1 including the nozzle unit 60 according to an embodiment of the present invention

The nozzle unit 60 and the cleaner 1 including the nozzle unit 60 according to an embodiment of the present invention can effectively collect garbage (H) such as hairs remaining in the driving environment.

In addition, the collected garbage H such as hair may be easily separated and accommodated in the dust container 30 even if the user does not perform a separate operation.

Hereinafter, with reference to FIG. 15 , a process in which garbage H such as hair is collected and separated by the nozzle unit 60 and the cleaner 1 including the same according to an embodiment of the present invention will be described in detail.

Referring to FIG. 15A , the brush 200 and the removing member 300 of the nozzle unit 60 provided in the cleaner 1 running on the floor G toward the left are shown. It will be understood that the removal member 300 is rotated according to the operation of the power unit 600 , and is rotated at a faster speed than the brush 200 .

At this time, the brush 200 is rotated counterclockwise, so that the cleaner 1 can be easily driven.

For convenience of understanding, the removal member 300 is also shown to be rotated counterclockwise, which is the same direction as the rotation direction of the brush 200 . However, as described above, since the orbital speed of the removing member 300 is faster than the rotation speed of the brush 200, even if the removing member 300 is rotated in the opposite direction to the brush 200, the contents to be described below may be applied. will be understood

Garbage (H) such as hair is located on the floor surface (G) before the cleaner (1) passes.

Referring to (b) of FIG. 15 , a state in which the cleaner 1 is driven and the garbage H such as hair existing on the floor G is collected by the brush 200 is shown.

As described above, the brush 200 includes the adhesive member 210 surrounding the outer periphery. The adhesive member 210 may be formed of a fiber material having high roughness, such as felt.

Garbage H such as hair adhered to the adhesive member 210 moves in the same direction as the brush 200 , that is, counterclockwise as the brush 200 rotates. Accordingly, the garbage H such as hair moves past the bottom surface G to the rear side of the brush 200 , that is, to the right in the illustrated embodiment.

Meanwhile, the removing member 300 is still moved in the same direction as the brush 200 . As described above, the illustrated embodiment is for convenience of understanding, and in the above state, the removing member 300 may be moved in a different direction.

Referring to (c) of FIG. 15 , a state immediately before the removal member 300 presses the garbage H such as hair adhered to the adhesive member 210 is shown.

In this state, the brush 200 is still rotated in one direction, that is, counterclockwise. Accordingly, the garbage H such as hair moves further compared to the state shown in FIG. 15B .

The removing member 300 is rotated in a direction opposite to the rotation direction of the brush 200, in the illustrated embodiment, in a clockwise direction. That is, it is premised that the removing member 300 is moved to the end in one direction in the state shown in FIG. 15B .

Referring to (d) of FIG. 15 , a state in which garbage H, such as hair, adhered to the adhesive member 210 is removed by the removal member 300 is shown.

In this state, the brush 200 continues to rotate in the same direction as the above-mentioned direction, that is, counterclockwise. In addition, the removing member 300 continues to rotate in a direction opposite to that of the brush 200 , that is, in a clockwise direction.

Accordingly, the garbage H, such as hair, adhered to the adhesive member 210 is pressed by the removal member 300 rotated in the opposite direction to the rotation direction of the brush 200 to be separated and dropped from the adhesive member 210 . .

In this case, as the brush 200 rotates in the opposite direction to the rotation direction of the removing member 300 , the amount of impact applied by the removing member 300 to the garbage H such as hair may be increased. Accordingly, the garbage H such as hair may be more easily and effectively separated from the adhesive member 210 .

Through the above process, the garbage H such as hair is dropped into the rear side of the brush 200 , that is, into the inner space of the nozzle housing 50 .

As described above, the inner space of the nozzle housing 50 communicates with the inner space of the body 10 and the dust container 30 through the communication part 53 . In addition, a member (not shown) for sucking the garbage H such as fallen hair is provided in at least one of the inner space, the dust container 30 and the communication part 53 of the body part 10 .

Accordingly, the garbage H such as fallen hair is collected in the dust container 30 through the inner space of the communication part 53 and the body part 10 .

As a result, the nozzle unit 60 and the cleaner 1 including the nozzle unit 60 according to an embodiment of the present invention can effectively collect the garbage H, such as hair, which is difficult to remove from the bottom surface G.

In addition, the collected garbage H such as hair may be easily separated from the brush 200 by the removal member 300 and accommodated in the dust container 30 .

Furthermore, the above process may be achieved by rotating the brush 200 and the removing member 300 at different speeds by a single power unit 600 .

Hereinafter, with reference to FIG. 16 , a process in which the garbage H such as hair is collected and pressurized by the nozzle unit 60 and the cleaner 1 including the nozzle unit 60 according to an embodiment of the present invention will be described in detail.

Referring to FIG. 16A , the brush 200 and the removing member 300 of the nozzle unit 60 provided in the cleaner 1 running on the floor G toward the left are shown. It will be understood that the removal member 300 is rotated according to the operation of the power unit 600 , and is rotated at a faster speed than the brush 200 .

At this time, the brush 200 is rotated clockwise, and the removing member 300 is rotated counterclockwise. However, the illustrated embodiment is for convenience of understanding, and in the above state, the removing member 300 may be moved in a different direction.

The cleaner 1 runs, and the garbage H, such as hair, existing on the floor G is collected by the brush 200 .

The brush 200 includes an adhesive member 210 surrounding the outer periphery. The adhesive member 210 may be formed of a fiber material having high roughness, such as felt.

Garbage H, such as hair, adhered to the adhesive member 210 moves in the same direction as the brush 200 , that is, in a clockwise direction as the brush 200 rotates. Accordingly, the garbage H such as hair is moved toward the removal member 300 .

Referring to (b) of FIG. 16 , a state in which garbage H such as hair is introduced into the space between the adhesive member 210 and the removal member 300 is illustrated.

In this state, the brush 200 is still rotated in one direction, that is, in a clockwise direction. Accordingly, the garbage H such as hair moves further compared to the state shown in FIG. 16A .

Referring to (c) of FIG. 16 , a state in which the garbage H such as hair adhered to the adhesive member 210 is pressed by the removal member 300 is shown.

In this state, the brush 200 is continuously rotated in one direction, that is, in a clockwise direction. However, the removing member 300 is rotated in the same direction as the rotational direction of the brush 200 , in the illustrated embodiment, in a clockwise direction. That is, in the state shown in (b) of FIG. 16 , the removing member 300 is moved to the end in a counterclockwise direction.

Accordingly, the garbage H such as hair moves further compared to the state shown in FIG. 16(b). At the same time, the garbage H such as hair is pressed by the removal member 300 and collected.

As described above, the members provided on the inner surfaces of the adhesive member 210 and the removing member 300 may be disposed to have a predetermined directionality. In the illustrated embodiment, the members provided on the inner surfaces of the adhesive member 210 and the removing member 300 are formed to have the same directionality.

However, the illustrated embodiment is provided for convenience of understanding, and it will be understood that the directions of the members provided on the inner surfaces of the adhesive member 210 and the removing member 300 may be formed in opposite directions.

In addition, it will be understood that the direction and position of the garbage H, such as hair, may be changed according to the directionality of the members provided on the inner surfaces of the adhesive member 210 and the removal member 300 .

Referring to (d) of FIG. 16 , a state in which garbage H such as collected hair is dropped by a suction member (not shown) of the cleaner 1 is illustrated.

As described above, the inner space of the nozzle housing 50 communicates with the inner space of the body 10 and the dust container 30 through the communication part 53 . In addition, a member (not shown) for sucking the garbage H such as fallen hair is provided in at least one of the inner space, the dust container 30 and the communication part 53 of the body part 10 .

Garbage H, such as hair, collected on one side of the adhesive member 210 is separated and removed from the adhesive member 210 by a suction member (not shown) of the cleaner 1 . At this time, since the garbage H such as hair is gathered and the surface area and volume are increased, it can be more easily and effectively separated from the adhesive member 210 .

Through the above process, the garbage H such as hair is dropped into the rear side of the brush 200 , that is, into the inner space of the nozzle housing 50 . Accordingly, the garbage H such as fallen hair is collected in the dust container 30 through the inner space of the communication part 53 and the body part 10 .

As described in FIG. 15 , as a result, the nozzle unit 60 effectively collects waste H such as hair that is difficult to remove from the bottom surface G, and the collected waste H such as hair is removed from the brush 200 . It will be understood that various modifications and variations of the present invention can be made without departing from the spirit and scope of the invention.

1: vacuum cleaner
10: body part
20: driving unit
30: dust bin
40: sensor unit
50: nozzle housing
51: outer housing
52: inner housing
53: communication unit
60: nozzle unit
100: frame
110: lower frame
120: side frame
130: support frame
200: brush
210: adhesive member
300: removal member
310: extension
311: inside
320: coupling part
330: link connection unit
400: gear unit
410: main gear
411: first main gear
412: second main gear
420: sub gear
421: first sub gear
422: second sub gear
430: support bar (bar)
500: link unit
510: main link
511: first main link
512: second main link
520: sub link
521: first sub-link
522: second sub link
600: power unit
H: Garbage such as hair
G: bottom

Claims (25)

frame;
a brush rotatably coupled to the frame, extending in one direction, and having an adhesive member surrounding the outer periphery; and
a detaching member extending in the direction of the rotational axis of the brush, positioned radially outward of the brush, and rotatably coupled to the frame with respect to the brush;
The removal member is
rotated along the perimeter of the brush,
vacuum cleaner. According to claim 1,
The removal member is
an extension portion extending along the direction of the rotation axis of the brush and surrounding the outer periphery of the brush from the radially outside; and
It is located at each end in the direction in which the extension portion extends, including a coupling portion rotatably coupled to the frame,
The removal member is
the extension is rotated along the periphery of the brush,
vacuum cleaner. 3. The method of claim 2,
The extension is
positioned adjacent to the periphery of the brush;
vacuum cleaner. 3. The method of claim 2,
The adhesive member is formed of a material having a predetermined roughness,
Among the surfaces of the extension part, the surface facing the outer periphery of the brush is provided with a member made of the same material as the adhesive member,
vacuum cleaner. According to claim 1,
a main gear coupled to the brush and rotated together with the brush;
a sub gear rotatably coupled to the frame and gear-fitted to the main gear;
Including a link portion coupled to the sub gear and the removal member, respectively,
When the sub gear is rotated,
Link movement of the link portion and the removal member,
vacuum cleaner. 6. The method of claim 5,
The main gear is
a first main gear positioned at one end of the one direction in which the brush extends; and
and a second main gear located at the other end of the one direction in which the brush extends,
The sub gear is
a first sub gear geared to the first main gear; and
Containing a second sub gear geared to the second main gear,
vacuum cleaner. 6. The method of claim 5,
The link unit,
a main link rotatably coupled to the removal member; and
It is rotatably coupled to the main link and includes a sub link coupled to the sub gear to rotate together,
vacuum cleaner. 6. The method of claim 5,
The main gear and the sub gear,
Each of the teeth (teeth) comprising a plurality of convex portions and concave portions alternately arranged along the outer periphery (teeth),
The teeth of the main gear include a greater number of convex portions and concave portions than the teeth of the sub gear,
The main gear rotates at a lower speed than the sub gear,
vacuum cleaner. 6. The method of claim 5,
It is coupled to the brush and includes a power unit for rotating the brush,
The power unit is provided with a single unit,
coupled to any one end of each end in the direction in which the brush extends,
vacuum cleaner. According to claim 1,
The removal member is
reciprocated by a predetermined distance along the outer periphery of the brush,
vacuum cleaner. 11. The method of claim 10,
The garbage adhering to the adhesive member is moved in one direction along the outer periphery of the brush by rotation of the brush,
The removal member is rotated in a direction different from the one direction in which the brush is rotated to press the garbage adhered to remove it from the adhesive member,
vacuum cleaner. 12. The method of claim 11,
It communicates with the frame and includes a dust container that is detachably provided,
The removed garbage is introduced into the dust bin,
vacuum cleaner. a movable body;
a nozzle housing detachably coupled to the body and communicating with the outside in an inner space; and
and a nozzle part rotatably accommodated in the nozzle housing and partially exposed to the outside of the nozzle housing,
The nozzle unit,
a frame coupled to the nozzle housing;
a brush rotatably coupled to the frame, extending in the axial direction, and having an adhesive member on its outer periphery; and
a detaching member extending in the axial direction of the brush and rotatably coupled to the frame with respect to the brush;
The removal member is
Extending along the axial direction of the brush, the cross-section is formed in an arc (arc) shape, comprising an extension part covering the outer periphery of the brush,
vacuum cleaner. 14. The method of claim 13,
The extension portion of the removing member of the nozzle portion,
covering an area of less than half of the perimeter of the brush;
vacuum cleaner. 14. The method of claim 13,
The extension portion of the removing member of the nozzle portion,
The axis of rotation is coaxial with the axis of the brush and is formed with a curvature equal to the curvature of the outer periphery of the brush,
vacuum cleaner. 14. The method of claim 13,
The extension portion of the removing member of the nozzle portion,
positioned adjacent to the periphery of the brush,
vacuum cleaner. 14. The method of claim 13,
The removing member of the nozzle part,
Continuous with the end in the direction in which the extension portion extends, including a coupling portion rotatably coupled to the brush,
vacuum cleaner. 18. The method of claim 17,
A plurality of the coupling portions of the nozzle unit are provided, and the plurality of coupling portions are respectively provided at respective ends in a direction in which the extension portion extends,
vacuum cleaner. a drivable body;
a nozzle housing which is detachably coupled to the body portion, the inner space of which communicates with the outside; and
and a nozzle part rotatably accommodated in the nozzle housing and partially exposed to the outside of the nozzle housing,
The nozzle unit,
a frame coupled to the nozzle housing;
a brush rotatably coupled to the frame, extending in the axial direction, and having an adhesive member surrounding the outer periphery; and
a removal member extending in the axial direction of the brush, positioned radially outward of the brush, and rotatably coupled to the frame with respect to the brush;
When the brush is rotated, the removing member is reciprocated by a predetermined distance in the outer circumferential direction of the brush,
robotic vacuum. 20. The method of claim 19,
The removing member of the nozzle part,
The nozzle part is reciprocated along the outer periphery of the part accommodated in the inside of the nozzle housing,
robotic vacuum. 20. The method of claim 19,
The nozzle unit,
a main gear coupled to the brush and rotated together with the brush;
a sub gear rotatably coupled to the frame and gear-fitted to the main gear;
and a link portion coupled to the sub gear and the removal member, respectively,
The main gear and the sub gear each include teeth along the outer periphery of which a plurality of convex portions and concave portions are alternately arranged,
the removing member rotates at a higher speed than the brush,
robotic vacuum. 20. The method of claim 19,
The brush of the nozzle part,
rotated clockwise or counterclockwise,
The removal member is
Reciprocating in a clockwise or counterclockwise direction by a predetermined distance in the outer periphery direction of the brush,
robotic vacuum. a movable body;
a nozzle housing which is detachably coupled to the body portion, the inner space of which communicates with the outside; and
and a nozzle part rotatably accommodated in the nozzle housing and partially exposed to the outside of the nozzle housing,
The nozzle unit,
a frame coupled to the nozzle housing;
a brush rotatably coupled to the frame, extending in the axial direction, and having an adhesive member surrounding the outer periphery; and
a detaching member extending in the axial direction of the brush, positioned radially outward of the brush, and linked to the brush;
When the brush rotates, the removing member revolves along the outer periphery of the brush,
vacuum cleaner. 24. The method of claim 23,
The nozzle unit,
a main gear coupled to the brush and rotated together with the brush;
a sub gear rotatably coupled to the frame and gear-fitted to the main gear;
Comprising a link portion respectively coupled to the sub gear and the removal member,
vacuum cleaner. 25. The method of claim 24,
The link part of the nozzle part,
a main link connected to the removal member; and
and sub-links respectively connected to the main link and the sub-gear,
The length of the main link is longer than the length of the sub-link,
vacuum cleaner.

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