CLEANER AND METHOD OF MANUFACTURING BRUSH DRUM OF CLEANER

The present disclosure relates to a cleaner including a main body, a brush head connected to the main body by a connection pipe and having a suction port, and a brush drum rotatably mounted to the brush head, wherein the brush drum includes a shaft unit rotatably mounted to the brush head, a cylindrical elastic member provided to surround an outer circumferential surface of the shaft unit, a brush provided in a cylindrical shape to surround an outer circumferential surface of the elastic member and formed of soft bristles, a pair of brackets assembled at both ends of the shaft unit and allowing the shaft unit to be rotatably mounted to the brush head, a handle unit detachably mounted on the brush head and detachably mounted to one of the pair of brackets.

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Description
CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a 371 of International Application No. PCT/KR2020/003055 filed on Mar. 4, 2020, which claims priority to Korean Patent Application No. 10-2019-0039363 filed on Apr. 4, 2019, the disclosures of which are herein incorporated by reference in their entirety.

BACKGROUND 1. Field

The present disclosure relates to a cleaner and a method of manufacturing a brush drum of the cleaner capable of performing cleaning without lifting a brush head even when large foreign substances exist on a surface to be cleaned.

2. Description of Related Art

In general, a cleaner is an apparatus that sweeps or scatters foreign substances such as dust or hair existing in the cleaning space, and suctions foreign substances such as scattered dust or hair by suction power to clean an area to be cleaned.

The cleaner includes a body, a brush head connected to the main body by a connection pipe and having a suction port, and a brush drum rotatably mounted to the brush head.

The brush drum includes a drum base formed of rigid metal or plastic, and a brush formed of soft fibrous hair having a predetermined length on the outer circumferential surface of the drum base.

In response to the scattering of the foreign substances such as dust and hair existing in the cleaning space by the rotation of the brush drum, the foreign substances such as scattered dust and hair are sucked into the suction port by the suction force generated inside the main body, and the sucked foreign substances are moved to a dust container.

In response to the amount of foreign substances present in the cleaning space being large, the foreign substances may come into contact with the drum base during the cleaning process, causing the front portion of the brush head to be momentarily lifted and the internal vacuum level to decrease, and the foreign substances to be pushed forward without being sucked.

In addition, the brush head is lifted and large foreign substances enter the suction port inside the brush head at once, which may cause the suction port to become blocked.

Therefore, it is an aspect of the disclosure to provide a cleaner and a method of manufacturing a brush drum of the cleaner, which may perform cleaning while maintaining a state in which the brush head is in close contact with a surface to be cleaned by including an elastic member in which the brush drum is elastically deformed.

SUMMARY

In accordance with an aspect of the disclosure, there is provided a cleaner, including: a main body; a brush head connected to the main body by a connection pipe and having a suction port; and a brush drum rotatably mounted to the brush head; wherein the brush drum includes: a shaft unit rotatably mounted to the brush head; an elastic member having a cylindrical shape and provided to surround an outer circumferential surface of the shaft unit; a brush provided in a cylindrical shape to surround an outer circumferential surface of the elastic member and formed of soft bristles; a pair of brackets assembled at both ends of the shaft unit and allowing the shaft unit to be rotatably mounted to the brush head; and a handle unit detachably mounted on the brush head and detachably mounted to one of the pair of brackets.

The shaft unit may include a shaft formed of a rigid body and a pipe having a cylindrical shape and in which the shaft is accommodated.

The shaft and the pipe may be provided integrally or provided separately and assembled.

The elastic member may be formed of a sponge or plastic formed of an elastic material having a mesh shape.

The elastic member may include: a first rubber provided in a cylindrical shape and surrounding the outer circumferential surface of the shaft unit; a second rubber provided in a cylindrical shape having a larger diameter than the first rubber; and a plurality of ribs formed of elastic material and connecting between the first rubber and the second rubber.

The pair of brackets may include: a first bracket assembled at one end of the shaft unit and configured to rotate the shaft unit by receiving a driving force from a driving motor; and a second bracket assembled on another end of the shaft unit and provided with the handle unit.

The first bracket may include: a first cap configured to cover the one end of the shaft unit; and a coupling configured to allow to be rotated the shaft unit by transmitting the driving force of the drive motor to the shaft unit; and the second bracket may include: a second cap configured to cover the other end of the shaft unit; a bearing configured to allow the other end of the shaft unit to be rotatably coupled; and a bush to which the handle unit is detachably mounted.

The handle unit may include a hook member rotatably provided on the handle unit and allowed to detachably mount the handle unit to the brush head; a plurality of fixing members fixing the position of the handle unit; and a mounting hole to which the bush is detachably mounted.

The hook member may include a hinge rotatably mounted to the brush head, and a hook rotated by the hinge to be hooked and released from the brush head, and the brush head may include a coupling fixer to which the coupling is fixed and which is connected to the driving motor by a belt to be rotated together with the coupling by the driving force of the driving motor; a hooking protrusion configured to hook and release the hook; and a plurality of fixing grooves configured to fix the plurality of fixing members.

In accordance with an aspect of the disclosure, there is provided a method of manufacturing a brush drum of a cleaner, the method comprising: manufacturing a brush having a cylindrical shape by stitching both ends of a fabric with soft bristles on the wide fiber layer and turning over the fabric so that the soft bristles is exposed to the outside; allowing a elastic member having a cylindrical shape to surround an outer circumferential surface of a shaft unit having a cylindrical shape; inserting the elastic member surrounding an outer circumferential surface of the shaft unit into the brush; bonding both ends of the brush to both ends of the elastic member; and assembling brackets at both ends of the shaft unit.

The elastic member may allow to surround the outer peripheral surface of the shaft unit by insert injection molding.

The elastic member may allow to surround the outer circumferential surface of the shaft unit by inserting and bonding the shaft unit into the elastic member.

The method may include inserting a jig into the brush to expand an inner diameter of the brush; inserting the elastic member surrounding the outer circumferential surface of the shaft unit into the brush; and then removing the jig.

The method may include reducing an outer diameter of the elastic member by inserting the elastic member surrounding the outer circumferential surface of the shaft unit into a jig; inserting the elastic member surrounding the outer circumferential surface of the shaft unit into the brush; and then removing the jig.

The method may include bonding the both ends of the brush to the both ends of the elastic member; and applying a sealant to seal the both ends of the brush.

According to embodiments of the disclosure, even if large foreign substances exist on the surface to be cleaned, cleaning may be performed without lifting the brush head during the cleaning process.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a cleaner according to an embodiment of the disclosure;

FIG. 2 is a diagram illustrating a separate configuration, in the cleaner according to an embodiment of the disclosure;

FIG. 3 is a diagram illustrating some configurations of the cleaner shown in FIG. 2 from a different angle;

FIG. 4 is a diagram illustrating a state in which a brush drum is mounted on a brush head according to an embodiment of the disclosure;

FIG. 5 is a cross-sectional view illustrating a state in which the brush drum is mounted on the brush head according to an embodiment of the disclosure;

FIG. 6 is a diagram illustrating an exploded state of the brush drum according to an embodiment of the disclosure;

FIG. 7 is a diagram illustrating a state in which the brush drum is coupled to the brush head according to an embodiment of the disclosure;

FIG. 8 is a diagram illustrating FIG. 7 from a different angle;

FIG. 9 is a diagram illustrating a state in which a handle unit is separated from the brush head by pressing a hook member of the handle unit according to an embodiment of the disclosure;

FIG. 10 is a cross-sectional view illustrating a state in which a hook is released from a hooking protrusion by pressing the hook member of the handle unit;

FIG. 11 is a diagram illustrating a state in which the brush drum including the handle unit is separated from the brush head according to an embodiment of the disclosure;

FIG. 12 is a diagram illustrating a state in which foreign substances having a size larger than the soft bristles length of the brush exist on the surface to be cleaned according to an embodiment of the disclosure;

FIG. 13 is a diagram illustrating a state in which an elastic member is elastically deformed by the foreign substances in response to the brush drum in FIG. 12 being clean the foreign substances;

FIG. 14 is a diagram illustrating an elastic member of the brush drum according to another embodiment of the disclosure;

FIG. 15 is a diagram illustrating an elastic member of the brush drum according to another embodiment of the disclosure;

FIG. 16 is a diagram illustrating a state in which after stitching both ends of a fabric with soft bristles planted on a wide fiber layer, the soft bristles is turned over to be exposed to the outside according to an embodiment of the disclosure;

FIG. 17 is a diagram illustrating a cylindrical brush in which the soft bristles is turned over to be exposed to the outside in FIG. 16;

FIG. 18 is a diagram illustrating a state in which a jig is inserted into the brush to expand an inner diameter of the brush according to an embodiment of the disclosure;

FIG. 19 is a diagram illustrating a state in which the elastic member surrounding the outer circumferential surface of the shaft unit is inserted into the brush having an expanded inner diameter according to an embodiment of the disclosure;

FIG. 20 is a diagram illustrating a state in which the jig is removed after inserting the elastic member surrounding an outer circumferential surface of a shaft unit into a brush according to an embodiment of the disclosure;

FIG. 21 is a diagram illustrating a state of assembling brackets at both ends of the shaft unit according to an embodiment of the disclosure;

FIG. 22 is a diagram illustrating a state in which an outer diameter of the elastic member is reduced by inserting the elastic member surrounding the outer circumferential surface of the shaft unit into the jig according to another embodiment of the disclosure;

FIG. 23 is a diagram illustrating a state in which the elastic member having a reduced outer diameter is inserted into the brush according to another embodiment of the disclosure; and

FIG. 24 is a diagram illustrating a state in which the jig is removed after inserting the elastic member having a reduced outer diameter into the brush according to another embodiment of the disclosure.

 DETAILED DESCRIPTION

The embodiments described in the present specification and the configurations shown in the drawings are only examples of preferred embodiments of the present disclosure, and various modifications may be made at the time of filing of the present disclosure to replace the embodiments and drawings of the present specification.

Like reference numbers or signs in the various drawings of the application represent parts or components that perform substantially the same functions.

The terms used herein are for the purpose of describing the embodiments and are not intended to restrict and/or to limit the present disclosure. For example, the singular expressions herein may include plural expressions, unless the context clearly dictates otherwise. Also, the terms “comprises” and “has” are intended to indicate that there are features, numbers, steps, operations, elements, parts, or combinations thereof described in the specification, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, parts, or combinations thereof.

It will be understood that, although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one component from another. For example, without departing from the scope of the present disclosure, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The term “and/or” includes any combination of a plurality of related items or any one of a plurality of related items.

Meanwhile, the terms “front”, “rear”, “upper”, “lower”, “upper” and “lower” used in the following description are defined based on the drawings, and the shape and position of each component are not limited by this term.

Hereinafter, preferred embodiments according to the disclosure will be described in detail with reference to the accompanying drawings.

A front used in the following refers to a direction toward the front based on a body of a cleaner, an upper portion refers to an upper direction based on a main body of the cleaner, and a lower portion refers to a lower direction based on the main body of the cleaner.

FIG. 1 is a perspective view of a cleaner according to an embodiment of the disclosure., FIG. 2 is a diagram separately some configurations, in the cleaner according to an embodiment of the disclosure, and FIG. 3 is a diagram showing some configurations of the cleaner shown in FIG. 2 from a different angle.

The cleaner may include a main body 10, a brush head 30 connected to the main body 10 by a connection pipe 20, and a brush drum 100 rotatably mounted on the brush head 30.

The main body 10 may include dust collecting apparatuses 40 and 50 detachably coupled to the main body 10 and a motor (not shown) provided to generate a suction force. The motor may be disposed inside the motor housing 60.

The dust collecting apparatuses 40 and 50 may be configured to separate and store dust or foreign substances contained in the air flowing into the inlet 51 by being disposed upstream of the air flow rather than the motor.

The dust collecting apparatuses 40 and 50 may include a dust separation apparatus 40 configured to separate dust or foreign substances contained in the air introduced through a suction port 31 of the brush head 30, and a dust container 50 provided to store dust or foreign substances separated by the dust separation apparatus 40 (see FIG. 4).

Referring to FIGS. 1 to 3, the dust collecting apparatuses 40 and 50 may be detachably coupled to the main body 10.

The dust container 50 may include an inlet 51 provided to introduce air sucked into the suction port 31 of the brush head 30 (see FIG. 4). The dust container 50 may include a protrusion housing 52 and a sliding protrusion 53 provided to be slidably coupled or fitted to the main body 10.

The main body 10 may include a handle 11 so that the user may grip and operate the cleaner. The user may hold the handle 11 and move the cleaner in the forward and backward directions.

The main body 10 may include a controller 12. The user may turn on/off the cleaner or adjust suction intensity by operating a power button provided on the controller 12.

The main body 10 may include a battery 13. The battery 13 may be detachably coupled to the main body 10. Accordingly, after the battery 13 is used up, operating time of the cleaner may be increased by replacing it with a previously charged battery 13. On the other hand, the battery 13 may be provided integrally with the main body 10.

The main body 10 may include a filter housing 15. The filter housing 15 may be provided in an approximately donut shape to accommodate a filter (not shown) therein. There is no limitation on the type of filter, but as an example, a Hepa Filter may be disposed in the filter housing 15. The filter (not shown) may filter ultrafine dust that is not filtered by the dust separation apparatus 40. The filter housing 15 may include a plurality of holes 16 so that air that has passed through the filter is discharged to the outside of the cleaner.

The main body 10 may include a dust collecting apparatus coupler 17 provided to couple the dust collecting apparatuses 40 and 50 to the main body 10. The main body 10 may include a connection pipe coupler 14. The connection pipe coupler 14 may be provided to separate the connection pipe 20 from the main body 10 or be coupled to the main body 10.

The dust separation apparatus 40 may include a button 41. The button 41 may be configured to separate the dust collecting apparatuses 40 and 50 from the main body 10 or be coupled to the main body 10. In addition, the button 41 may be configured to separate the dust container 50 from the dust separation apparatus 40 or to be coupled to the dust separation apparatus 40 in response to the dust collecting apparatuses 40 and 50 being separated from the main body 10.

The brush head 30 may be connected to the main body 10 by the connection pipe 20. The brush drum 100 may be rotatably mounted on the brush head 30. The brush head 30 may be provided to contact a surface to be cleaned, and suction foreign substances such as dust existing on the surface to be cleaned through the suction port 31(see FIG. 4).

FIG. 4 is a diagram showing a state in which a brush drum is mounted on a brush head according to an embodiment of the disclosure.

Referring FIG. 4, the brush head 30 may include a suction port 31 configured to suck foreign substances such as dust existing on the surface to be cleaned, and a driving motor 32 configured to rotate the brush drum 100 mounted on the brush head 30.

The driving motor 32 may be provided inside the brush head 30. The driving motor 32 may be connected to the coupling fixer 34 by a belt 33. The coupling fixer 34 may be fixed to a coupling 143 of the first bracket 141 to be described below. The driving force of the driving motor 32 is transmitted to the coupling fixer 34 through the belt 33, and the coupling fixer 34 and the coupling 143 rotate together so that the brush drum 100 may be rotated (see FIG. 5).

FIG. 5 is a cross-sectional view showing a state in which the brush drum is mounted on the brush head according to an embodiment of the disclosure, FIG. 6 is a diagram showing an exploded state of the brush drum according to an embodiment of the disclosure, FIG. 7 is a diagram showing a state in which a brush drum is coupled to the brush head according to an embodiment of the disclosure, and FIG. 8 is a diagram showing FIG. 7 from a different angle.

Referring to FIGS. 5 to 8, the brush drum 100 may include a shaft unit 110 rotatably mounted on the brush head 30, a cylindrical elastic member 120 provided to surround an outer circumferential surface of the shaft unit 110, a brush 130 formed of soft bristles and provided in a cylindrical shape to surround an outer circumferential surface of the elastic member 120, a pair of brackets 140 assembled at both ends of the shaft unit 110, and a handle unit 150 detachably mounted on one of the pair of brackets 140.

The shaft unit 110 may include a shaft 111 formed of a rigid body and a cylindrical pipe 113 in which the shaft 111 is accommodated. The shaft 111 and the pipe 113 may be provided integrally. In addition, in another embodiment, the shaft 111 and the pipe 113 may be separately provided and assembled.

The elastic member 120 may be provided with a sponge 121 having a cylindrical shape. The elastic member 120 is provided to surround the outer circumferential surface of the shaft unit 110, so that in response to large foreign substances being exist on the surface to be cleaned, the elastic member 120 is elastically deformed to prevent the brush head 30 from being lifted by the large foreign substances.

The brush 130 may be provided in a cylindrical shape to surround the outer circumferential surface of the elastic member 120. The brush 130 may be formed by planting soft bristles on a wide fiber layer. During cleaning, the brush 130 may improve the efficiency in which the foreign substances are sucked into the suction port 31 by sweeping or scattering the foreign substances such as dust existing on the surface to be cleaned.

The pair of brackets 140 may be assembled at both ends of the shaft unit 110. The pair of brackets 140 may be rotatably mounted to the brush head 30 on the shaft unit 110.

The pair of brackets 140 may include a first bracket 141 assembled at one end of the shaft unit 110 and a second bracket 144 assembled at the other end of the shaft unit 110.

The first bracket 141 may assembled at one end of the shaft unit 110 and rotate the shaft unit 110 by receiving a driving force from the driving motor 32. The first bracket 141 may include a first cap 142 configured to cover one end of the shaft unit 110, and a coupling 143 configured to rotate the shaft unit 110 by transmitting the driving force of the drive motor 32 to the shaft unit 110.

The first cap 142 may cover one end of the shaft unit 110 to prevent the foreign substances or the like from entering into the interior. The coupling 143 may be rotatably fixed to the coupling fixer 34 of the brush head 30. In response to the coupling fixer 34 being rotated by the driving motor 32, the coupling 143 may be rotated together with the coupling fixer 34. In response to the coupling 143 being rotated, the shaft 111 coupled to the coupling 143 is rotated together with the coupling 143 so that the brush drum 100 may be rotated.

The second bracket 144 may assembled to the other end of the shaft unit 110, and the handle unit 150 may be detachably mounted on the second bracket 144. The second bracket 144 may include a first cap 142 configured to cover the other end of the shaft unit 110, a bearing 146 configured to rotatably couple the other end of the shaft unit 110, and a bush 147 configured to detachably mount the handle unit 150. The second cap 145 may cover the other end of the shaft unit 110 to prevent foreign substances and the like from entering the interior. The bush 147 may be detachably mounted to a mounting hole 155 of the handle unit 150. The handle unit 150 may be detachably mounted to the brush head 30 by a hook member 151. The handle unit 150 is detachably mounted to the brush head 30, and in response to the foreign substances being entangled in the brush drum 100, the foreign substances entangled in the brush drum 100 may be easily cleaned by separating the handle unit 150 from the brush head 30 and separating the brush drum 100 from the handle unit 150.

The handle unit 150 may include the hook member 151 rotatably provided on the handle unit 150 and allowed to detachably mount the handle unit 150 to the brush head 30; a plurality of fixing members 154 configured to fix the position of the handle unit 150 and a mounting hole 155 to which the bush 147 is detachably mounted.

The hook member 151 may include a hinge 152 rotatably mounted to the brush head 30; and a hook 153 configured to be rotated by the hinge to be hooked and released from a hooking protrusion 35 of the brush head 30.

The brush head 30 may include the hooking protrusion 35 configured to hook and release the hook 153, and a plurality of fixing grooves 36 configured to receive and fix a plurality of fixing members 154 provided in the handle unit 150.

FIG. 9 is a diagram showing a state in which a handle unit is separated from the brush head by pressing a hook member of the handle unit according to an embodiment of the disclosure, FIG. 10 is a cross-sectional view showing a state in which a hook is released from a hooking protrusion by pressing the hook member of the handle unit, and FIG. 11 is a diagram showing a state in which the brush drum including the handle unit is separated from the brush head according to an embodiment of the disclosure.

Referring to FIG. 9, the hook member 151 of the handle unit 150 is exposed to the outside, and may be pressed to separate the handle unit 150 from the brush head 30.

Referring to FIG. 10, in response to the hook member 151 being pressed, the hook 153 may be released from the hooking protrusion 35 by rotating about the hinge 152. In response to the force pressing the hook member 151 is released, the hook 153 released from the hooking protrusion 35 may be hooked to the hooking protrusion 35 by rotating around the hinge 152 by a spring 150a.

Referring to FIG. 11, in response to the hook 153 is released from the hooking protrusion 35, the brush drum 100 may be separated from the brush head 30. The brush drum 100 may be separated from the handle unit 150 by detachably mounting the bush 147 to the handle unit 150.

FIG. 12 is a diagram showing a state in which foreign substances having a size larger than the soft bristles length of the brush exist on the surface to be cleaned according to an embodiment of the disclosure, and FIG. 13 is a diagram showing a state in which an elastic member is elastically deformed by the foreign substances in response the brush drum in FIG. 12 being clean the foreign substances.

Referring to FIG. 12, when the brush drum 100 passes the foreign substances to clean the foreign substances in response to the foreign substances having a size larger than the soft bristles length of the brush 130 exist on a floor which is the surface to be cleaned, referring to FIG. 13, the elastic member 120 is elastically deformed by foreign substances, so that the brush head 30 may be cleaned without being lifted.

FIG. 14 is a diagram showing an elastic member of the brush drum according to another embodiment of the disclosure, and FIG. 15 is a diagram showing an elastic member of the brush drum according to another embodiment of the disclosure.

Referring to FIG. 14, the elastic member 122 may include a first rubber 123 provided in a cylindrical shape and surrounding the outer circumferential surface of the shaft unit 110; a second rubber 124 provided in a cylindrical shape having a larger diameter than the first rubber 123; and a plurality of ribs 125 configured to connect between the first rubber 123 and the second rubber 124. The rest of the configuration except for the elastic member 122 is the same as the configuration shown in FIG. 6.

Referring to 15, the elastic member 126 may be formed of plastic formed of an elastic material having a mesh shape.

FIG. 16 is a diagram showing a state in which after stitching both ends of a fabric with soft bristles planted on a wide fiber layer, the fabric is turned over so that the soft bristles are exposed to an outside according to an embodiment of the disclosure, FIG. 17 is a diagram showing a cylindrical brush in which the soft bristles is reversed to be exposed to the outside in FIG. 16, FIG. 18 is a diagram showing a state in which a jig is inserted into the brush to expand an inner diameter of the brush according to an embodiment of the disclosure, FIG. 19 is a diagram showing a state in which the elastic member surrounding the outer circumferential surface of the shaft unit is inserted into the brush having an expanded inner diameter according to an embodiment of the disclosure, FIG. 20 is a diagram showing a state in which the jig is removed after inserting the elastic member surrounding an outer circumferential surface of a shaft unit into the brush according to an embodiment of the disclosure, and FIG. 21 is a diagram showing a state of assembling brackets at both ends of the shaft unit according to an embodiment of the disclosure.

Referring to FIG. 16, in order to manufacture the brush drum 100, first, the both ends of the soft bristles-flocked fabric may be stitched to each other in a wide fiber layer. First, both ends of a fabric with soft bristles planted on a wide fiber layer may be stitched together. After stitching both ends, referring to FIG. 17, the brush 130 having a cylindrical shape may be manufactured by turning over the fabric so that the soft bristles are exposed to an outside.

The elastic member 120 may be provided to surround the outer circumferential surface of the shaft unit 110 by insert injection molding. In another embodiment, after inserting the shaft unit 110 into the elastic member 120 so that the cylindrical elastic member 120 surrounds the outer circumferential surface of the shaft unit 110, the elastic member 120 and the shaft unit 110 may be bonded.

In response to the brush 130 is manufactured, and the elastic member 120 into which the shaft unit 110 is inserted is provided, referring to FIG. 18, the inner diameter of the brush 130 may be expanded by inserting the jig G into the brush 130.

In response to the inner diameter of the brush 130 being expanded, as shown in FIG. 19, the elastic member 120 surrounding the outer circumferential surface of the shaft unit 110 may be easily inserted into the brush 130.

After inserting the elastic member 120 surrounding the outer circumferential surface of the shaft unit 110 into the brush 130, as shown in FIG. 20, the jig G may be removed.

After the jig G is removed, as shown in FIG. 21, the brush drum 100 may be manufactured by attaching the brackets 140 to both ends of the shaft unit 110 and then applying a sealant to seal the inside of the brush drum 100 by.

FIG. 22 is a diagram showing a state in which an outer diameter of the elastic member is reduced by inserting the elastic member surrounding the outer circumferential surface of the shaft unit into inside of the jig according to another embodiment of the disclosure, FIG. 23 is a diagram showing a state in which the elastic member having a reduced outer diameter is inserted into the brush according to another embodiment of the disclosure, and FIG. 24 is a diagram showing a state in which the jig is removed after inserting the elastic member having a reduced outer diameter inside the brush according to another embodiment of the disclosure.

In response to the brush 130 being manufactured and the elastic member 120 into which the shaft unit 110 is inserted being provided, as shown in FIG. 22, the outer diameter of the elastic member 120 may be reduced by inserting the elastic member 120 surrounding the outer circumferential surface of the shaft unit 110 inside the jig G.

In response to the outer diameter of the elastic member 120 being reduced, as shown in FIG. 23, the elastic member 120 surrounding the outer circumferential surface of the shaft unit 110 may be easily inserted into the brush 130.

After inserting the elastic member 120 surrounding the outer circumferential surface of the shaft unit 110 into the brush 130, as shown in FIG. 24, the jig G may be removed.

After the jig G is removed, as shown in FIG. 21, the brush drum 100 may be manufactured by attaching the brackets 140 to both ends of the shaft unit 110 and then applying the sealant to seal the inside of the brush drum 100 by.

FIG. 1 is a perspective view illustrating a display apparatus according to an embodiment of the disclosure. For reference, in FIG. 1, “X” refers to the front and rear directions of the display apparatus, “Y” refers to the left and right directions of the display apparatus, and “Z” refers to the vertical direction of the display apparatus.

The foregoing has illustrated and described specific embodiments. However, it should be understood by those of skilled in the art that the present disclosure is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the technical idea of the present disclosure described in the following claims.

Claims

1. A cleaner, comprising:

a main body;
a brush head connected to the main body by a connection pipe and having a suction port; and
a brush drum rotatably mounted to the brush head;
wherein the brush drum includes:
a shaft unit rotatably mounted to the brush head;
an elastic member having a cylindrical shape and provided to surround an outer circumferential surface of the shaft unit;
a brush provided in a cylindrical shape to surround an outer circumferential surface of the elastic member and formed of soft bristles;
a pair of brackets assembled at both ends of the shaft unit and allowing the shaft unit to be rotatably mounted to the brush head; and
a handle unit detachably mounted on the brush head and detachably mounted to one of the pair of brackets.

2. The cleaner according to claim 1, wherein

the shaft unit includes a shaft formed of a rigid body and a pipe having a cylindrical shape and in which the shaft is accommodated.

3. The cleaner according to claim 2, wherein

the shaft and the pipe are provided integrally, or provided separately and assembled.

4. The cleaner according to claim 1, wherein

the elastic member is formed of a sponge or plastic formed of an elastic material having a mesh shape.

5. The cleaner according to claim 1, wherein

the elastic member includes: a first rubber provided in a cylindrical shape and surrounding the outer circumferential surface of the shaft unit; a second rubber provided in a cylindrical shape having a larger diameter than the first rubber; and a plurality of ribs formed of elastic material and connecting between the first rubber and the second rubber.

6. The cleaner according to claim 1, wherein

the pair of brackets includes: a first bracket assembled at one end of the shaft unit and configured to rotate the shaft unit by receiving a driving force from a driving motor; and a second bracket assembled on another end of the shaft unit and provided with the handle unit.

7. The cleaner according to claim 6, wherein

the first bracket includes: a first cap configured to cover the one end of the shaft unit; and a coupling configured to allow the shaft unit to be rotated by transmitting the driving force of the drive motor to the shaft unit; and
the second bracket includes: a second cap configured to cover the other end of the shaft unit; a bearing configured to allow the other end of the shaft unit to be rotatably coupled; and a bush to which the handle unit is detachably mounted.

8. The cleaner according to claim 7, wherein

the handle unit includes a hook member rotatably provided on the handle unit and configured to detachably mount the handle unit to the brush head; a plurality of fixing members fixing the position of the handle unit; and a mounting hole to which the bush is detachably mounted.

9. The cleaner according to claim 8, wherein

the hook member includes a hinge rotatably mounted to the brush head, and a hook rotated by the hinge to be hooked and released from the brush head, and
the brush head includes: a coupling fixer to which the coupling is fixed and which is connected to the driving motor by a belt to be rotated together with the coupling by the driving force of the driving motor; a hooking protrusion configured to hook and release the hook; and a plurality of fixing grooves configured to fix the plurality of fixing members.

10. A method of manufacturing a brush drum of a cleaner, the method comprising:

manufacturing a brush having a cylindrical shape by stitching both ends of a fabric formed of soft bristles planted on a wide fiber layer and turning over the fabric so that the soft bristles are exposed to an outside;
allowing an elastic member having a cylindrical shape to surround an outer circumferential surface of a shaft unit having a cylindrical shape;
inserting the elastic member surrounding the outer circumferential surface of the shaft unit into the brush;
bonding both ends of the brush to both ends of the elastic member; and
assembling brackets at both ends of the shaft unit.

11. The method according to claim 10, wherein

the elastic member is allowed to surround the outer circumferential surface of the shaft unit by insert injection molding.

12. The method according to claim 10, wherein

the elastic member is allowed to surround the outer circumferential surface of the shaft unit by inserting and bonding the shaft unit into the elastic member.

13. The method according to claim 10, comprising: inserting a jig into the brush to expand an inner diameter of the brush; inserting the elastic member surrounding the outer circumferential surface of the shaft unit into the brush; and removing the jig.

14. The method according to claim 10, comprising: reducing an outer diameter of the elastic member by inserting the elastic member surrounding the outer circumferential surface of the shaft unit into a jig; inserting the elastic member surrounding the outer circumferential surface of the shaft unit into the brush; and removing the jig.

15. The method according to claim 10, comprising: bonding the both ends of the brush to the both ends of the elastic member; and applying a sealant to seal the both ends of the brush.

Patent History
Publication number: 20220087489
Type: Application
Filed: Mar 4, 2020
Publication Date: Mar 24, 2022
Inventors: Ki Hwan KWON (Suwon-si), Dong Woo HA (Suwon-si), Jung Gyun HAN (Suwon-si), Seok Man HONG (Suwon-si), Kyoung Woung KIM (Suwon-si), Tae Gwang KIM (Suwon-si)
Application Number: 17/420,019
Classifications
International Classification: A47L 9/04 (20060101); A46B 13/00 (20060101); A46D 3/04 (20060101);