WO2022080930A1

WO2022080930A1 - Vacuum cleaner

Info

Publication number: WO2022080930A1
Application number: PCT/KR2021/014332
Authority: WO
Inventors: 김황; 현기탁; 고정민
Original assignee: 엘지전자 주식회사
Priority date: 2020-10-16
Filing date: 2021-10-15
Publication date: 2022-04-21
Also published as: CN116507255A; EP4230104A1; US20230404347A1; KR20220050526A

Abstract

The present invention relates to a vacuum cleaner comprising: a suction part through which air comprising dust is sucked; a suction motor for generating an air flow so that the air flows into the suction part; a cyclone part in communication with the suction part, for separating the dust from the air; a handle which, with respect to the cyclone part, is arranged in the direction opposite to the suction part and comprises a grip part a user grasps with a hand; and a power part for supplying power to the suction motor, wherein the lengthwise axis of the suction motor is arranged to be perpendicular to the lengthwise axis of the suction part and parallel to the base surface of the power part.

Description

vacuum cleaner

The present invention relates to a vacuum cleaner, and more particularly, to a cleaner arranged such that a longitudinal axis of a suction port and a longitudinal axis of a suction motor are formed in a vertical direction.

In general, a vacuum cleaner is a household appliance that sucks in small garbage or dust by sucking air using electricity and fills the dust bin in the product, and is generally called a vacuum cleaner.

Such a vacuum cleaner may be divided into a manual cleaner in which the user directly moves the cleaner to perform cleaning, and an automatic cleaner in which the user performs cleaning while driving by themselves. Manual vacuum cleaners may be classified into canister-type cleaners, upright cleaners, handy-type cleaners, stick-type cleaners, and the like, depending on the type of cleaner.

In the past, canister-type vacuum cleaners were often used in household cleaners, but recently, a hand-held vacuum cleaner and a stick cleaner, which are convenient to use by providing a dust container and a cleaner body, are increasingly being used.

The canisty type vacuum cleaner is connected to the main body and the suction port by a rubber hose or pipe, and in some cases, it can be used by inserting a brush into the suction port.

The Hand Vacuum Cleaner maximizes portability, and since it is light in weight but short in length, there may be restrictions on the cleaning area while sitting. Therefore, it is used to clean localized places such as on a desk or sofa, or in a car.

The stick vacuum cleaner can be used while standing, so you can clean without bending your back. Therefore, it is advantageous for cleaning while moving a large area. If a hand-held vacuum cleaner cleans a narrow space, the stick-type vacuum cleaner can clean a wider space than that, and can clean a high place that cannot be reached by hand. Recently, a stick cleaner is provided in a module type, and the cleaner type is actively changed and used for various objects.

A handheld vacuum cleaner is disclosed in Korean Patent Application Laid-Open No. 10-2018-0102604 as a prior document on a stick cleaner. A handheld vacuum cleaner includes a body, a cyclone separation device, a wand and a cleaner head.

In addition, the main body has an upper portion accommodating the motor and fan unit and a lower portion accommodating a power source in the form of a battery pack.

Here, the longitudinal axis of the motor and fan unit is disposed to face the same direction as the longitudinal axis of the inlet duct, and this arrangement makes the protruding length in the wrist direction of the motor and fan unit longer, and as a result, the user holds the handle and When cleaning, interference occurs over a wide range toward the upper side of the wrist, which may cause discomfort.

On the other hand, among the components included in the stick cleaner, the suction motor and the battery are relatively heavy parts, and thus need to be placed in an appropriate position so that the user can feel less load when cleaning.

Looking at the vacuum cleaner disclosed in Korean Patent Application Laid-Open No. 10-2019-0136644 as another prior document on the stick cleaner, the rotary shaft of the suction motor is arranged to be parallel to a straight line passing through the center of gravity of the foreign material separation unit.

In addition, the cleaner disclosed in Korean Patent Application Laid-Open No. 10-2019-0136644 includes a handle, the handle is disposed above the battery, and a suction motor is disposed in front of the handle.

However, there is a problem in that the center of gravity is shifted forward when the heavy suction motor is disposed in the front with respect to the handle.

On the other hand, when the center of gravity is shifted to either side by the suction motor and the battery based on the handle gripped by the user, a moment force is applied to the user's wrist, and when the user continues to receive the load by the moment force, the user It puts a strain on your wrist.

An object of the present invention is to provide a cleaner capable of reducing a load applied to a user's wrist when the user performs cleaning by optimizing the weight balance.

Another object of the present invention is to provide a cleaner capable of increasing the dust container capacity by increasing the height of the dust container.

Another object of the present invention is to provide a cleaner capable of reducing a portion interfered by contact with a wrist when a user holds the handle for cleaning while disposing the suction motor at the rear of the handle.

Another object of the present invention is to provide a cleaner in which the display unit is configured to have a larger area to improve the user's information recognition.

In order to achieve the above object, a cleaner according to a preferred embodiment of the present invention includes: a suction unit through which air containing dust is sucked; a suction motor generating a flow of the air so that the air is introduced into the suction unit; a cyclone unit communicating with the suction unit to separate the dust from the air; a handle disposed in a direction opposite to the suction part based on the cyclone part and including a grip part gripped by a user's hand; and a power supply unit for supplying power to the suction motor, wherein a longitudinal axis of the suction motor is disposed perpendicular to the longitudinal axis of the suction unit and disposed parallel to a bottom surface of the power unit.

In this case, the suction motor may be disposed on the upper portion of the handle, and the power unit may be disposed on the lower portion of the handle.

In addition, the handle extension line formed by extending a tangent line contacting the outer circumferential surface of the gripper is disposed to be spaced apart from the outer circumferential surface in the radial direction of the suction motor by a predetermined distance, and does not penetrate the suction motor.

In addition, the center of gravity of the suction motor may be disposed in a direction opposite to the suction part with respect to a longitudinal axis of the grip part.

Meanwhile, the cleaner according to an exemplary embodiment of the present invention may further include a rear housing disposed at the rear with respect to the handle and having a cylindrical shape, in which the suction motor is accommodated and seated, and a part of the outer circumferential surface of the rear housing. It is characterized in that the inclined surface formed to face the user during the cleaning operation is provided.

In this case, a display unit for displaying an operating state of the cleaner may be disposed on the inclined surface.

In addition, the longitudinal axis of the suction part may be disposed at an upper portion spaced apart from the grip part by a predetermined distance.

Also, a longitudinal axis of the suction unit may be disposed to pass through at least a portion of the suction motor.

In addition, the vacuum cleaner according to a preferred embodiment of the present invention may further include a discharge cover coupled to one side in the longitudinal direction of the suction motor and provided with an air discharge unit through which the dust is filtered and the remaining air is discharged.

In addition, the air discharge unit may include a plurality of openings provided to be spaced apart by a predetermined interval, each of the openings perpendicular to the longitudinal axis of the suction motor in a state in which the exhaust cover is coupled to the suction motor. direction may be provided.

In the vacuum cleaner according to a preferred embodiment of the present invention, by arranging the suction motor so that the center of gravity of the suction motor is formed behind the longitudinal axis of the handle, it is possible to prevent moment force due to the center of gravity of the suction motor from being tilted forward. And, as a result, it is possible to reduce the load applied to the user's wrist when the user performs cleaning.

In addition, in the vacuum cleaner according to the preferred embodiment of the present invention, by arranging the suction motor at the rear of the longitudinal axis of the handle, the height of the dust container can be increased, and as a result, the dust accommodating capacity can be increased.

In addition, in the vacuum cleaner according to a preferred embodiment of the present invention, in disposing the suction motor at the rear of the handle, the longitudinal axis of the suction motor is perpendicular to the longitudinal axis of the suction unit and parallel to the bottom surface of the power unit By doing so, the length of the suction motor protruding to the rear of the handle can be minimized, so that when the user grips the handle for cleaning, it is possible to reduce a portion that contacts and interferes with the wrist.

In addition, in the vacuum cleaner according to a preferred embodiment of the present invention, an inclined surface is provided on the rear housing in which the suction motor is accommodated and seated, the inclined surface is provided as long as the rear housing length, and a display unit is configured on the inclined surface, so that a larger area can configure the display. Accordingly, it is possible to improve the user's information recognition.

1 is a perspective view of a cleaner according to an embodiment of the present invention.

2 is a side view of a cleaner according to an embodiment of the present invention.

3 is a plan view of a cleaner according to an embodiment of the present invention.

4 is a longitudinal cross-sectional view of a cleaner according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2 .

6 is a view for explaining the arrangement structure of the inclined surface.

7 is for explaining the configuration of the display unit when the cleaner is mounted on the charging stand for charging after completion of the cleaning operation.

8 is a longitudinal cross-sectional view illustrating an air flow in the vacuum cleaner.

9 is a cross-sectional view taken along line A-A of FIG. 2 for showing the air flow in the vacuum cleaner.

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 2 to show air flow in the vacuum cleaner.

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

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be construed to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The above terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term “and/or” may include a combination of a plurality of related listed items or any of a plurality of related listed items.

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 other components may exist in between. can be understood On the other hand, when an element is referred to as being “directly connected” or “directly connected” to another element, it may be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression may include the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, it is interpreted in an ideal or excessively formal meaning. it may not be

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for more clear explanation.

1 is a perspective view of a cleaner 1 according to an embodiment of the present invention, FIG. 2 is a side view of the cleaner 1 according to an embodiment of the present invention, and FIG. 3 is a cleaner according to an embodiment of the present invention. (1) is a plan view, FIG. 4 is a longitudinal cross-sectional view of the cleaner 1 according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line B-B of FIG.

1 to 5 , the cleaner 1 according to an embodiment of the present invention may include a body 2 . The body 2 may include a suction unit 10 through which air containing dust is sucked.

When the direction in which the longitudinal axis A1 of the suction unit 10 is disposed is defined as the front-rear direction, the direction of one side where the suction unit 10 is located is referred to as the front, and the other side where the suction motor 20 to be described later is located. The direction of is defined as backward. In addition, a direction in which the axis A3 of the cyclone flow of the cyclone unit 30 to be described later is arranged is defined as the vertical direction.

The body 2 may have an outer shape formed by a plurality of housings.

For example, the main body 2 is disposed in front of the main body 2 and includes a first housing 3 having a substantially cylindrical shape, and a second housing 3 having a substantially cylindrical shape coupled to an upper side of the first housing 3 ( 4) may be included. In addition, the body 2 may include a rear housing 210 disposed at the rear of the body 2 . At this time, the second housing 4 may be connected to the rear housing 210 through the third housing 6 , and the lengthwise directions of the first housing 3 and the second housing 4 are the upper and lower sides of the main body 2 . direction and the longitudinal direction of the rear housing 210 may be disposed to be perpendicular to both the front-rear direction and the vertical direction. In other words, when the direction in which the longitudinal axis A1 of the suction unit 10 is disposed is the x-axis direction, the rear housing 210 may be disposed in the y-axis direction in the longitudinal direction, and the first housing ( 3) and the second housing 4 may be disposed in the z-axis direction in the longitudinal direction.

On the other hand, in expressing that the first housing 3 and the second housing 4 are arranged in front of the main body 2 and the rear housing 210 is arranged in the rear of the main body 2, the handle 40 to be described later The longitudinal axis A4 of the gripper 450 may be a reference (refer to FIG. 2).

The upper end of the first housing 3 and the lower end of the second housing 4 may have an open shape, respectively. That is, the first housing 3 may include an upper opening and the second housing 4 may include a lower opening. The coupling of the second housing 4 to the upper side of the first housing 3 may mean that the upper opening of the first housing 3 and the lower opening of the second housing 4 are coupled. Also, the diameter D3 of the second housing 4 may be greater than the width W of the third housing and the length D4 of the rear housing. (See FIG. 3 ).

The suction unit 10 has a cylindrical shape with an open inside, is configured to suck air containing dust, and may provide a suction flow path through which air containing dust can flow. Air including dust may be guided to the body 2 through the suction unit 10 .

The body 2 may further include a suction motor 20 , a cyclone unit 30 , a handle 40 , and a power supply unit 50 .

Here, the suction motor 20 is configured to generate an air flow (ie, air flow) so that air containing dust can be introduced into the suction unit 10 . The suction motor 20 may be accommodated in the rear housing 210 (refer to FIG. 4).

The rear housing 210 has a cylindrical shape having a predetermined diameter, and in this case, the suction motor 20 may be seated and accommodated in parallel to the longitudinal direction of the rear housing 210 .

The suction motor 20 may include a motor shaft 220 and an impeller 230 connected to the motor shaft 220 to rotate.

The suction motor 20 may be a brushless DC (BLDC) motor. A BLDC motor is a brushless type DC motor. The BLDC motor has no brushes, which are abrasive parts, so there is less electrical and mechanical noise, and there are no problems with high-speed rotation and low rotational noise.

The cyclone unit 30 communicates with the suction unit 10 and is configured to apply the principle of a dust collector using centrifugal force to separate dust sucked into the body 2 through the suction unit 10 .

For example, the cyclone unit 30 may include a first cyclone 310 capable of separating dust by cyclone flow. The first cyclone 310 may communicate with the suction unit 10 . Air and dust sucked in through the suction unit 10 are spirally flowed along the inner circumferential surface of the first cyclone 310 . The axis A3 of the cyclone flow of the first cyclone 310 may extend in the vertical direction.

The cyclone unit 30 may further include a second cyclone 330 that again separates dust from the air discharged from the first cyclone 310 . In this case, the second cyclone 330 may be located inside the first cyclone 310 so that the size of the cyclone unit 30 is minimized. The second cyclone 330 may include a plurality of cyclone bodies arranged in parallel. The air discharged from the first cyclone 310 may be divided into a plurality of cyclone bodies and passed through.

At this time, the axis (A3) of the cyclone flow of the second cyclone 330 may also extend in the vertical direction, and the axis (A3) of the cyclone flow of the first cyclone 310 and the second cyclone (330) ) of the cyclone flow axis (A3) may be coaxial in the vertical direction, which may be collectively referred to as the cyclone flow axis (A3) of the cyclone unit (30).

The body 2 may further include a cyclone filter 350 disposed to surround the second cyclone unit 330 . The cyclone filter 350 is formed in a cylindrical shape, for example, and guides the air separated from the dust in the first cyclone unit 310 to the second cyclone 330 . The cyclone filter 350 may filter dust while air passes.

To this end, the cyclone filter 350 may include a mesh portion having a plurality of holes. The mesh portion is not limited, but may be formed of a metal material.

Meanwhile, as another example, it is also possible that the cyclone unit 30 has a single cyclone, and even in this case, the axis A3 of the cyclone flow may extend in the vertical direction.

The handle 40 is a component that allows the user to grip and move the cleaner 1, and is disposed in the opposite direction to the suction unit 10 with respect to the cyclone unit 30 and is a part that the user grips with his/her hand. A gripper 450 may be included. Here, the gripper 450 has a substantially cylindrical shape and has an axis A4 in the longitudinal direction. In addition, the gripper 450 may be disposed with an upper portion inclined toward the front. The handle 40 and the third housing 6 may be integrally formed.

The power supply unit 50 is a component for supplying power to the suction motor 20 , and includes a battery 510 . The power supply unit 50 may be disposed to be adjacent to the handle 40 on the upper side, and a lower portion of the outer peripheral surface of the dust container 60 to be described later may be disposed to be adjacent to the front side.

The main body 2 may further include a dust container 60 for storing the dust separated from the cyclone unit 30 .

The dust container 60 may include a dust collecting body 610 having a cylindrical shape. For example, it is also possible that the first cyclone 310 does not exist separately, and the upper portion of the dust collecting body 610 serves as the first cyclone 310 . All or at least a part of the second cyclone 330 may be located in the dust container 60 .

A dust storage guide 604 for guiding storage of the dust separated from the second cyclone 330 may be disposed in the dust collecting body 610 . The dust storage guide 604 may be coupled to the lower side of the second cyclone 330 .

The dust storage guide 604 separates the space inside the dust collecting body 610 from the first dust storage unit 602 in which the dust separated from the first cyclone 310 is stored, and the second cyclone 330 . It is divided into a second dust storage unit 606 in which the dust is stored. In other words, the inner space of the dust storage guide 604 is the second dust storage unit 606 , and the space between the dust storage guide 604 and the dust collecting body 610 is the first dust storage unit 602 .

Hereinafter, a preferred embodiment of the vacuum cleaner 1 according to the present invention will be described focusing on the arrangement relationship of each configuration.

1 to 5 , the first housing 3 may include a first cyclone 310 , a second cyclone 330 , and a dust container 60 . More specifically, an upper portion of the first housing 3 may be defined as a first cyclone 310 , and a second cyclone 330 may be accommodated in the first housing 3 , and the first A lower portion of the housing 3 may be defined as the dust container 60 described above.

The suction part 10 may be disposed where the first housing 3 and the second housing 4 are coupled. More specifically, a portion of the suction passage of the suction unit 10 may be disposed in communication with the first housing 3 and the other portion may be disposed in communication with the second housing 4 .

In addition, the handle 40 and the power supply unit 50 are disposed at the rear of the first housing 3 , and the third housing 6 is disposed at a portion connecting the second housing 4 and the rear housing 210 . do.

On the other hand, in the cleaner 1 according to the preferred embodiment of the present invention, the longitudinal axis A2 of the suction motor 20 is disposed to be perpendicular to the longitudinal axis A1 of the suction unit 10, and the power supply unit ( 50) is arranged to be parallel to the bottom surface (B). At this time, the longitudinal axis A1 of the suction unit 10 is also arranged to be parallel to the bottom surface B of the power supply unit 50 .

Unlike the preferred embodiment of the present invention, it is assumed that the longitudinal axis A2 of the suction motor 20 is arranged to be parallel to the longitudinal axis A1 of the suction unit 10 . That is, this is a case in which the suction motor 20 extends along the longitudinal axis A1 of the suction unit 10 . In this arrangement, since the long axis of the suction motor 20 is disposed along the front-rear direction, the main body of the cleaner protrudes long in the direction in which the wrist extends when the handle 40 is gripped. Therefore, there is a problem that the grip feeling is not good.

In contrast to this, in the vacuum cleaner 1 according to the preferred embodiment of the present invention, since the long axis A2 of the suction motor 20 is disposed perpendicular to the front-rear direction of the vacuum cleaner 10, one of the main body 2 It is possible to prevent the configuration from excessively protruding to the rear of the gripper 450 . Accordingly, when the user holds the handle 40 for cleaning, it is possible to reduce a portion that contacts and interferes with the wrist.

In addition, in the cleaner 1 according to the preferred embodiment of the present invention, the outer peripheral surface of the rear housing 210 has a circular shape when the cleaner 1 is viewed from the side. Due to this, when the user holds the handle 40 for cleaning, it is possible to naturally form a curved surface in the direction in which the wrist extends from the back of the hand. Accordingly, there is an advantage in that the user's grip on the cleaner 1 is further improved.

Meanwhile, the rear housing 210 may include an inclined surface 215 on which the display unit 250 is disposed.

6 is a view for explaining the arrangement structure of the inclined surface 215 .

Referring to FIG. 6 , the inclined surface 215 may be provided on a portion of the outer peripheral surface of the rear housing 210 , and the inclined surface 215 may be formed to face the user during a cleaning operation. Specifically, the inclined surface 215 may be disposed to face rearward, and an upper end of the inclined surface 215 may be disposed to be inclined toward the front. For example, the angle between the inclined surface 215 and the axis A3 of the cyclone flow of the cyclone unit 30 may form an angle of 30 degrees to 45 degrees.

The inclined surface 215 may be disposed to face the upper rear side of the main body 2 . That is, as the inclined surface 215 is provided, the rear housing 210 has a cylindrical shape in which the rear upper side is cut off by the inclined surface 215 portion.

The operating state of the cleaner 1 may be displayed on the display unit 250 disposed on the inclined surface 215 . At this time, since the inclined surface 215 is formed to be inclined toward the user, the state of the cleaner 1 displayed on the display unit 250 during cleaning (eg, the remaining amount of the battery, suction of the suction motor) strength, etc.) can be easily checked by the user.

The display unit 250 is not limited, but may be in the form of a display screen including a plurality of light emitting units.

When the display unit 150 is disposed on the inclined surface 215 provided on a portion of the outer peripheral surface of the rear housing 210 , the length D4 of the rear housing 210 and the length of the inclined surface 215 may be substantially the same. That is, the display unit 250 may have a longer horizontal length to correspond to the length D4 of the rear housing 210 .

With this configuration, the display unit 250 disposed on the inclined surface 215 has a larger area, and the user's awareness of information about the operating state of the cleaner 1 displayed on the display unit 250 is increased. It has the advantage of increasing convenience.

Meanwhile, as the display unit 250 has a larger area, various information on the state of the cleaner 1 may be displayed.

7 is for explaining the configuration of the display unit 250 when the vacuum cleaner 1 is mounted on the charging stand for charging after the cleaning operation is completed.

The display unit 250 may be configured such that when the vacuum cleaner 1 is mounted in the direction shown in FIG. 7 and the suction unit 10 faces downward, the contents displayed on the display screen are vertically inverted.

To this end, the body 2 may be provided with a sensor for determining whether the screen is turned over. (For example, a geomagnetic sensor, an accelerometer, etc.) There is an advantage in that the state of the cleaner 1 can be easily checked.

Meanwhile, a manipulation unit (not shown) together with the display unit 250 may be further disposed on the inclined surface 215 . The user may input an operation or stop command of the cleaner 1 through the operation unit. On the other hand, when the display unit 250 and the operation unit are disposed on one inclined surface 215 as described above, there is an advantage in that the user's convenience in operating the cleaner 1 is increased.

In a preferred embodiment of the present invention, the suction motor 20 may be disposed on the upper portion of the handle 40 , and the power supply unit 50 may be disposed on the lower portion of the handle 40 . That is, the handle 40 may be disposed between the suction motor 20 and the power supply unit 50 .

In this case, the handle extension lines L1 and L2 formed by extending a tangent line in contact with the outer circumferential surface of the gripper 450 may be disposed to be spaced apart from the suction motor 20 by a predetermined distance in a radial direction.

More specifically, the handle extension lines L1 and L2 are the outermost of the gripping portion 450 when the main body 2 is cut and viewed in a plane including the longitudinal axis A1 of the suction portion 10 . It may mean virtual extension lines L1 and L2 formed by extending a tangent line in contact with the gripper 450 from the protruding outermost points P1 and P2 (see FIG. 4 ).

Since the handle extension lines L1 and L2 are disposed to be spaced apart from the suction motor 20 by a predetermined distance in the radial direction, the handle extension lines L1 and L2 do not pass through the suction motor 20 . In other words, the handle extension lines L1 and L2 and the suction motor 20 do not come into contact with each other at any one point. In other words, the handle extension lines L1 and L2 are disposed so as not to meet any part of the suction motor 20 .

Through this, the center of gravity (G1) of the suction motor 20 may be disposed to be located at the rear of the handle extension lines (L1, L2). Also, the center of gravity G1 of the suction motor 20 may be disposed in the opposite direction to the suction unit 10 with respect to the longitudinal axis A4 of the gripper 450 .

Through this arrangement relationship, the center of gravity G1 of the suction motor 20 may be formed close to the user's wrist. Therefore, it is possible to reduce the moment force due to the center of gravity (G1), the load applied to the user's wrist is reduced, has the effect of feeling less fatigue in performing a cleaning operation for a long time.

On the other hand, as described above, the grip portion 450 of the handle 40 is disposed in a shape with an upper portion inclined toward the front. Accordingly, the center of gravity G2 of the power supply unit 50 may be disposed to be located in front of the longitudinal axis A4 of the holding unit 450 . That is, the center of gravity G1 of the suction motor 20 and the center of gravity G2 of the power supply unit 50 may be disposed to be located in opposite directions with respect to the longitudinal axis A4 of the gripper 450 . .(See Fig. 4)

Through this arrangement relationship, the center of gravity (G2) of the power supply unit 50, which is one component with a heavy weight, based on the grip unit 450, which is the part that the user grips, and the suction motor 20, which is another component with heavy weight. Since the centers of gravity (G1) are in opposite directions to each other, there is an effect of optimizing the weight balance of the main body (2).

In addition, the handle 40 may form a connection part 451 on one side of the grip part 450 adjacent to the suction motor 20 . The connecting portion 451 may have a shape that naturally extends without a step difference by forming a portion where the outer circumferential surface of the rear housing 210 and the gripper 450 are coupled to a curved surface having a predetermined radius.

Through this, when the user grabs the gripping part 450, the connection part 451 is seated between the user's thumb and index finger, so that the heavy suction motor 20 is supported on the back of the hand, so the cleaning operation is performed There is an effect that the city cleaner 1 can be supported in a more stable form.

Meanwhile, the bottom surface B of the power supply unit 50 and the bottom surface B ′ of the dust container 60 (which may be referred to as the bottom surface of the first housing 3 ) do not exist on one plane and may have a step difference. That is, the bottom surface B of the power supply unit 50 and the bottom surface B' of the dust container 60 may be configured to have different heights. (See FIGS. 2 and 4 )

Preferably, the suction motor 20 and the battery 510, which are relatively heavy components, are disposed above the power supply unit 50, and it is preferable that the bottom surface (B) of the power supply unit 50 protrude further downward.

Through this, when the bottom surface B of the power supply unit 50 is placed on the floor surface, the main body 2 of the cleaner 1 may be stably supported without falling in the direction of the dust container 60 .

In addition, the longitudinal axis A1 of the suction unit 10 may be formed above the grip portion 450 of the handle 40 , and may be disposed to penetrate at least a portion of the suction motor 20 . More specifically, the longitudinal axis A1 of the suction part 10 disposed at the connection part of the first housing 3 and the second housing 4 has a predetermined distance from the grip part 450 of the handle 40 . It is disposed at the upper part spaced apart, that is, the longitudinal axis A1 of the suction part 10 may be disposed in such a way that it does not penetrate the grip part 450 of the handle 40 ( FIGS. 2 and 4 ). Reference)

Conventionally, when the suction motor 20 is disposed above the cyclone unit 30 , there is a limit to increasing the height of the first housing 3 in consideration of the length of the suction motor 20 . Accordingly, the longitudinal axis A1 of the suction unit 10 to be disposed near the upper end of the first housing 3 had to be disposed to penetrate the grip portion 450 of the handle 40 .

On the contrary, according to the preferred embodiment of the present invention, since the suction motor 20 is disposed on the upper portion of the handle 40, the height of the second housing 4 disposed on the upper portion of the cyclone unit 30 is reduced and compared with the prior art. It becomes possible to increase the height of the upper end of the first housing 3 .

Accordingly, when the overall height of the main body 2 is the same, the height of the first housing 3 can be higher than that of the conventional one, so that the height of the dust container 60 can also be formed high, and the dust container 60 can collect dust. The acceptable dose may be increased. This has the advantage of reducing the inconvenience of frequently emptying the dust of the dust container 60 from the user's point of view.

Meanwhile, the body 2 may further include a pre-filter 71 disposed on the cyclone unit 30 . The pre-filter 71 is configured to filter out dust not collected by the cyclone unit 30 .

A part of the pre-filter 71 may be accommodated in the first housing 3 , and the remaining part may be accommodated in the second housing 4 . An air guide 75 for guiding the air discharged from the cyclone unit 30 to the pre-filter 71 may be provided between the cyclone unit 30 and the pre-filter 71 .

Here, the pre-filter 71 may be a mesh filter having a cylindrical shape. For example, the pre-filter 71 may include a material of nylon and a spun-bonded fabric. The spunbond nonwoven fabric is a type of nonwoven fabric made by spinning synthetic fibers such as polypropylene (PP, polypropylene) and then applying heat to adhere them.

The air guide 75 is configured in a conical shape with a narrow lower portion and a wider upper portion. In addition, the lower portion of the air guide 75 is coupled to the upper side of the cyclone unit 30 , and the upper portion of the air guide 75 is coupled to the lower portion of the pre-filter 71 , and the second cyclone 330 is discharged. It may serve to guide the air to flow to the suction motor 20 without mixing with the air flowing into the suction unit 10 .

In addition, the main body 2 may further include a high efficiency particulate air filter (HEPA filter) on an upper portion of the pre-filter 71 . The entire HEPA filter 72 may be accommodated in the second housing 4 .

The HEPA filter 72 serves to finally filter fine dust not filtered by the pre-filter 71 .

The air discharged from the cyclone unit 30 and passed through the pre-filter 71 passes through the HEPA filter 72 and is discharged to the outside through the suction motor 20 .

Conventionally, the location of the HEPA filter 72 has been arranged so that the air is discharged to the outside of the cleaner 1 through the HEPA filter 72 after passing through the suction motor 20. Since the motor 20 is a brushless DC motor, even if a structure in which the air flow passes through the HEPA filter 72 before flowing to the suction motor 20 is adopted, foreign matter scattering at the final end of the air flow is small.

In the present invention, the cleaner 1 has been described as including the pre-filter 71 and the HEPA filter 72, but it should be noted that there is no limitation on the type and number of filters.

Meanwhile, in a preferred embodiment of the present invention, the body 2 may further include a discharge cover 270 .

The discharge cover 270 is configured to be detachably coupled to one side of the rear housing 210 in the longitudinal direction of the suction motor 20 . The exhaust cover 270 may be provided with an air exhaust unit 275 through which dust is filtered and the remaining air is discharged to the outside of the main body 2 .

Referring to FIG. 6 , the discharge cover 270 has a first cover part 271 formed in a circular shape, and is coupled to the first cover part 271 and has a cylindrical shape at the edge of the first cover part 271 by a predetermined length. includes an extended second cover part 273 .

More specifically, the discharge cover 270 may have a cylindrical shape with one side open in the longitudinal direction, and the open one side of the discharge cover 270 and one longitudinal side of the rear housing 210 are separable from each other. can be combined.

On the other hand, on the second cover portion 273 of the discharge cover 270, an air discharge unit 275 through which the air that has passed through the suction motor 20 is discharged is provided. In this case, the air discharge unit 275 may include a plurality of openings provided on the second cover unit 273 at predetermined intervals. Here, each of the openings may be provided to pass through the second cover part 273 in a rectangular shape.

On the other hand, based on the state in which the exhaust cover 270 is coupled to the rear housing 210 , the respective openings of the air exhaust part 275 are perpendicular to the longitudinal axis A2 of the suction motor 20 . direction can be opened. When the impeller 230 of the suction motor 20 rotates, air flows to the discharge cover 270 in the longitudinal direction 20 of the suction motor 20 to the body 2 through the openings of the air discharge unit 275 . will come out of the

In addition, the air discharge unit 275 may not be formed in at least a partial area on the second cover unit 273 of the discharge cover 270 . That is, the air discharge unit 275 may be provided only in a portion of the second cover unit 273 of the discharge cover 270 .

For example, based on the state in which the exhaust cover 270 is coupled to the rear housing 210 , the air exhaust unit 275 may be provided only on the upper side of the exhaust cover 270 . In this case, as the cleaner 1 is tilted in the cleaning direction while cleaning is performed, the air exiting from the main body 2 flows out only in the cleaning direction. Accordingly, it is possible to prevent the air escaping from the main body 2 from being discharged toward the user.

8 to 10 are views illustrating air flow in the vacuum cleaner.

8 to 10 , air containing dust is sucked through the suction unit 10 by the operation of the suction motor 20 . Air is horizontally introduced to the inner circumferential surface of the first cyclone 310 through the suction unit 10 in a tangential direction, and descends while rotatingly flowing along the inner circumferential surface. In the descending air, dust and air are subjected to centrifugal forces of different magnitudes due to the difference in density. Accordingly, relatively heavy dust is vertically discharged downward and collected in the first dust storage unit 602 of the dust container 60 .

Meanwhile, the descending air forms an upward airflow in the reverse direction at some point and flows into the second cyclone 330 , and the air flowing into the second cyclone 330 is again separated from dust. The dust separated from the air in the second cyclone 330 flows downward again and is stored in the second dust storage unit 606 . Air separated from dust in the second cyclone 330 is discharged from the second cyclone 330 , passes through the air guide 75 , and ascends to the pre-filter 71 .

As the air passes through the pre-filter 71 , fine dust that has not been filtered is filtered. In addition, the air that has passed through the pre-filter 71 first passes through the HEPA filter 72 before reaching the suction motor 20 .

The air that has passed through the HEPA filter 72 passes through the second housing 4 and moves in the direction of the suction motor 20 and passes through the third housing 6, and as it passes through the HEPA filter 72, dust is finally removed. The filtered air is introduced into the suction motor 20, and after the inside of the suction motor 20 flows along the axis of the motor shaft 220 by the rotation of the impeller 230, the air discharge unit 275 of the discharge cover 270 It is discharged to the outside of the body (2) through the.

As described above, in the vacuum cleaner according to the preferred embodiment of the present invention, the suction motor is disposed such that the center of gravity of the suction motor is formed behind the longitudinal axis of the handle, so that the moment force due to the center of gravity of the suction motor moves forward. It is possible to prevent pulling, and as a result, it is possible to reduce the load applied to the user's wrist when the user performs cleaning.

In addition, in the vacuum cleaner according to a preferred embodiment of the present invention, in disposing the suction motor at the rear of the handle, the longitudinal axis of the suction motor is perpendicular to the longitudinal axis of the suction unit and parallel to the bottom of the power unit By doing so, it is possible to minimize the length of the suction motor protruding to the rear of the handle, so that when the user grips the handle for cleaning, it is possible to reduce a portion that comes into contact with the wrist and interferes with it.

In the foregoing, a specific embodiment of the present invention has been described and illustrated, but the present invention is not limited to the described embodiment, and those skilled in the art may change to other specific embodiments without departing from the spirit and scope of the present invention. It will be understood that modifications and variations are possible. Accordingly, the scope of the present invention is

It should not be determined by the specified embodiment, but should be determined by the technical idea described in the claims.

Claims

a suction unit through which air containing dust is sucked;

a suction motor generating a flow of the air so that the air is introduced into the suction unit;

a cyclone unit communicating with the suction unit to separate the dust from the air;

a handle disposed in a direction opposite to the suction part based on the cyclone part and including a grip part gripped by a user's hand; and

Including a power supply unit for supplying power to the suction motor,

A longitudinal axis of the suction motor is disposed perpendicular to a longitudinal axis of the suction unit and disposed parallel to a bottom surface of the power supply unit.
The method of claim 1,

The suction motor is disposed above the handle, and the power supply unit is disposed below the handle.
The method of claim 1,

A handle extension line formed by extending a tangent line in contact with the outer circumferential surface of the gripper is disposed to be spaced apart from an outer circumferential surface in a radial direction of the suction motor by a predetermined distance, and does not penetrate the suction motor.
The method of claim 1,

A center of gravity of the suction motor is disposed in a direction opposite to the suction part with respect to a longitudinal axis of the grip part.
The method of claim 1,

It is disposed at the rear with respect to the handle and has a cylindrical shape and further includes a rear housing in which the suction motor is accommodated and seated,

A part of the outer circumferential surface of the rear housing is provided with an inclined surface formed to face the user during the cleaning operation.
6. The method of claim 5,

The cleaner, characterized in that the display unit for displaying the operating state of the cleaner is disposed on the inclined surface.
The method of claim 1,

The vacuum cleaner, characterized in that the longitudinal axis of the suction part is disposed at an upper portion spaced apart from the grip part by a predetermined distance.
The method of claim 1,

A longitudinal axis of the suction unit is disposed to pass through at least a portion of the suction motor.
The method of claim 1,

The cleaner further comprising a discharge cover coupled to one side in the longitudinal direction of the suction motor and provided with an air discharge unit through which the air remaining after the dust is filtered out is discharged.
10. The method of claim 9,

The air outlet includes a plurality of openings provided to be spaced apart from each other at predetermined intervals,

Each of the openings is provided in a direction perpendicular to a longitudinal axis of the suction motor in a state in which the discharge cover is coupled to the suction motor.