CN118890996A - Vacuum cleaner base station - Google Patents

Abstract

The present invention relates to a vacuum cleaner, which includes a vacuum cleaner head, wherein the vacuum cleaner head includes: a roller, which assists in traveling on a cleaning surface; and a roller cover, which prevents the roller from detaching from the vacuum cleaner head and can easily separate the roller, so that a user can easily replace the roller that can be arranged on the bottom surface of the vacuum cleaner head, can easily remove foreign matter accumulated on the roller, and maintain the traveling performance of the roller, prevent damage to components, and reduce the maintenance cost and time of the roller.

Description

Vacuum cleaner base station

Technical Field

The present invention relates to a vacuum cleaner that travels on a cleaning surface and performs cleaning, and more particularly, to a vacuum cleaner having a detachable roller that assists in traveling on the cleaning surface during cleaning.

Background Art

Generally, a vacuum cleaner is a household appliance that uses electricity to suck in air to suck in smaller garbage or dust and fills the dust collection bucket inside the product, and is usually called a vacuum cleaner.

Such vacuum cleaners can be divided into manual vacuum cleaners that the user directly moves the vacuum cleaner to perform cleaning, and automatic vacuum cleaners that autonomously travel and perform cleaning. Manual vacuum cleaners can be divided into cylinder vacuum cleaners, upright vacuum cleaners, handheld vacuum cleaners, and stick vacuum cleaners, etc. according to the shape of the vacuum cleaner.

Conventionally, most household vacuum cleaners are cylinder-type vacuum cleaners. However, in recent years, handheld vacuum cleaners and stick-type vacuum cleaners are increasingly being used, in which the dust collecting bucket and the vacuum cleaner body are integrated to improve the usability.

In a cylinder-type vacuum cleaner, a main body and a suction port are connected by a rubber hose or a tube, and a brush can be attached to the suction port for use according to circumstances.

A handheld vacuum cleaner is a vacuum cleaner that maximizes portability. Although it is lightweight, its short length limits the possibility of cleaning while sitting. Therefore, it is used for cleaning local areas such as desks, sofas, or cars.

A stick vacuum cleaner can be used while standing, so it can be cleaned without bending over. Therefore, it is convenient to move and clean in a wide area. Compared with a handheld vacuum cleaner that cleans a narrow space, a stick vacuum cleaner can clean a wider space and can clean high places that cannot be reached by hands. In recent years, stick vacuum cleaners have been provided in a modular form to actively change the type of vacuum cleaner and use it for various objects.

There are two main ways to clean the floor: dry cleaning and wet cleaning. Dry cleaning is a method of cleaning by sweeping or sucking up dust, and existing vacuum cleaners correspond to dry cleaning. Wet cleaning is a method of cleaning by wiping dust with a wet rag. In addition, there is also a method of generating and spraying high-temperature steam for sterilization and cleaning in wet cleaning.

Generally, a roller that directly contacts the cleaning surface and assists the movement of the vacuum cleaner may be disposed on the lower side of the vacuum cleaner. However, the roller and other parts may become contaminated and worn as the vacuum cleaner is used continuously, and the travel performance may be reduced or noise may be generated due to foreign objects such as hair being entangled. In such a case, the entire structure including the corresponding parts needs to be disassembled for separation and replacement.

Furthermore, if the roller is continuously used in a state where the running performance of the roller is reduced due to foreign matter such as hair, there is a risk that the roller may be subjected to excessive load and be damaged.

In addition, the above-mentioned separation and replacement may require skilled technicians, resulting in labor costs, etc., which may cause inconvenience to vacuum cleaner users.

Therefore, there is a need for a cleaner head including a structure that allows easy replacement of the rollers that assist in traveling on the cleaning surface.

Summary of the invention

Problem to be solved

In order to solve the above-mentioned problems existing in the prior art, the vacuum cleaner of the present invention has a roller that can be easily replaced and configured on the bottom surface of the vacuum cleaner head, which can easily remove foreign matter accumulated on the roller and maintain the driving performance of the roller, prevent damage to components, simplify the maintenance of the vacuum cleaner and save costs and time.

The objects of the present invention are not limited to the objects mentioned above, and those skilled in the art can clearly understand other objects not mentioned from the following description.

Technical solutions to the problem

In order to achieve the above-mentioned problem, the vacuum cleaner head of the vacuum cleaner of the embodiment of the present invention may include: a cover body, which constitutes the appearance and has a space formed inside; a cleaning member, which is arranged in the space inside the cover body and cleans the cleaning surface; a lower cover, which covers the lower side of the cover body, and a roller accommodating portion is formed in a recessed manner on the lower side surface of the lower cover; a roller, which is detachably coupled to the inside of the roller accommodating portion and is configured to be rotatable to roll on the cleaning surface; and a flat-plate-shaped roller cover, which is detachably coupled to the roller accommodating portion and the roller to prevent the roller from detaching.

Among them, the roller accommodating portion may include a cover groove formed by a vertical depression, and the roller cover may include: a cover body, which is arranged in parallel with the lower cover; and a cover combining portion, which is arranged vertically with the cover body, and the cover combining portion can be arranged at one end of the cover body and vertically introduced into the cover groove.

In addition, the roller accommodating portion may include a hook groove formed by a horizontal depression on the inner wall of the cover groove, and the cover coupling portion may include a cover hook formed by a horizontal protrusion. The cover hook may be configured to face the hook groove, and the cover hook may be detachably coupled to the hook groove.

In addition, the roller includes: a roller body formed in a cylindrical shape; and a roller shaft configured to pass through the rotation center of the roller body; the lower cover may include: a roller groove, which is recessed inside the roller accommodating portion to form an inner wall constituting a curved surface and is used to introduce a part of the roller body; one or more roller shaft grooves, which are recessed inside the roller accommodating portion to form an inner wall constituting a curved surface and are used to introduce a part of the roller shaft; and a cover support platform, which is vertically protruded inside the roller accommodating portion to form and support the cover body.

In addition, the roller cover may further include: an axis support groove, which is vertically recessed on the lower side of the cover body to form an inner wall forming a curved surface, and a part of the roller shaft is vertically introduced; and a cover support groove, which is vertically recessed on the lower side of the cover body to form a curved surface, and a part of the roller shaft is vertically introduced.

Furthermore, the roller shaft and the cover support platform may block horizontal movement of the cover body, and a direction in which the roller shaft blocks horizontal movement of the cover body and a direction in which the cover support platform blocks horizontal movement of the cover body may be orthogonal to each other.

In addition, the roller accommodating portion may further include a separation auxiliary groove, which is recessed on the opposite side of the position where the roller is arranged with respect to the cover coupling portion in the horizontal direction, and at least a portion of the cover coupling portion may be exposed to the internal space of the separation auxiliary groove. If an external force is applied to the exposed portion of the cover coupling portion in the horizontal direction, the cover hook may be moved horizontally and separated from the hook groove.

In addition, a portion of the cover coupling portion exposed to the auxiliary separation groove may be recessed to form a first cover groove.

The auxiliary separation groove may be formed with an inclined surface whose depth increases as it approaches the cover coupling portion.

In addition, the lower side surface of the cover body may be recessed to form a second cover groove.

On the other hand, the structure of the present invention can also be applied to a sweeping robot.

The sweeping robot of the present invention may include: a cover body, which constitutes the appearance and has a space formed inside; a cleaning member, which is arranged in the space inside the cover body and cleans the cleaning surface; a lower cover, which covers the lower side of the cover body, and a roller accommodating portion is formed in a depression on the lower side surface of the lower cover; a roller, which is detachably coupled to the inside of the roller accommodating portion and is configured to be rotatable to roll and move on the cleaning surface; a roller drive motor, which is detachably connected to the roller and transmits a rotational force to the roller in order to rotate the roller; a flat roller cover, which is detachably coupled to the roller accommodating portion and the roller and blocks the roller from detaching; and a control unit, which controls the cleaning member and the roller drive motor for controlling cleaning and driving.

Details of other embodiments are included in the detailed description and drawings.

Effects of the Invention

The vacuum cleaner of the present invention has one or more of the following effects.

The vacuum cleaner head of the vacuum cleaner of the present invention has a structure including a roller that assists the vacuum cleaner in traveling on the cleaning surface and a roller cover that can be easily separated while preventing the roller from detaching from the vacuum cleaner. Therefore, it has the effect of allowing a user to easily replace the roller that can be arranged on the bottom surface of the vacuum cleaner head, easily removing foreign matter accumulated on the roller, maintaining the traveling performance of the roller, preventing damage to components, and reducing the maintenance cost and time of the vacuum cleaner.

The effects of the present invention are not limited to the effects mentioned above, and a person skilled in the art can clearly understand other effects not mentioned from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG. 2 is an exploded view of the vacuum cleaner head according to the embodiment of the present invention.

FIG. 3 is a perspective view of the roller cover of the vacuum cleaner head according to the embodiment of the present invention.

4 to 6 are views showing the roller cover of the cleaner head according to the embodiment of the present invention at various angles.

FIG. 7 is a diagram showing the cleaner head according to the embodiment of the present invention as seen from below.

FIG. 8 is a diagram for explaining a roller housing portion formed in a cleaner head according to an embodiment of the present invention.

9 is a cross-sectional view of a roller accommodating portion formed on a cleaner head according to an embodiment of the present invention.

10 is a cross-sectional view of a state where the roller and the roller cover according to an embodiment of the present invention are combined with a vacuum cleaner head.

FIG. 11 is a diagram for illustrating that a roller and a roller cover according to another embodiment of the present invention are applicable to a sweeping robot.

FIG. 12 is a diagram for explaining that a roller and a roller cover according to another embodiment of the present invention are applicable to a wet vacuum cleaner.

DETAILED DESCRIPTION

The advantages, features and methods of achieving the advantages and features of the present invention will be clarified by reference to the embodiments and drawings described below. However, the present invention is not limited to the embodiments disclosed below and can be implemented in different forms. The embodiments are provided only to ensure that the disclosure of the present invention becomes complete and to fully inform the scope of the present invention to those skilled in the art. The present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals represent the same constituent elements.

Hereinafter, the vacuum cleaner head of the present invention will be described with reference to the accompanying drawings.

In an embodiment of the present invention, a vacuum cleaner may refer to a cleaning device manually operated by a user. For example, the vacuum cleaner may be a vacuum cleaner, may perform dry and/or wet cleaning, may refer to a cylinder vacuum cleaner or an upright vacuum cleaner or a handheld vacuum cleaner or a stick vacuum cleaner.

In an embodiment of the present invention, a vacuum cleaner may refer to a cleaning device that automatically performs cleaning. For example, a vacuum cleaner, as a vacuum cleaner, may refer to a cleaning robot that can perform dry cleaning and/or wet cleaning.

The vacuum cleaner may include a main body (not shown) and a cleaner head 1. The main body (not shown) is a component that has a suction motor disposed therein and provides suction to the cleaner head 1. The cleaner head 1 is a component that uses a cleaning member 150 to clean a cleaning surface.

The main body may be connected to the extension tube A. The main body may be connected to the cleaner head 1 through the extension tube A. The main body may generate suction using a suction motor and provide suction to the cleaner head 1 through the extension tube A. External dust may flow into the main body through the cleaner head 1 and the extension tube A.

The main body forms the appearance, and a space can be formed inside the main body to store the main components. The main body can be provided with a dust bin, a dust separation unit, a suction motor, a filter, a handle, an operating unit, and a main battery.

The dust bucket is a component for storing dust. The dust bucket can be communicated with the dust separation part and store the dust separated in the dust separation part.

The dust separation unit is communicated with the extension pipe A. The dust separation unit can separate dust sucked into the interior through the extension pipe A from the air.

The dust separation unit may be communicated with the dust barrel. More specifically, the dust separation unit may be arranged inside the dust barrel. Therefore, the dust separated in the dust separation unit is collected in the dust barrel, and the air is discharged to the outside of the dust separation unit.

The dust separation portion may be a cyclone portion capable of separating dust using a cyclone flow.

The suction motor is a component that generates suction force for sucking in air. The suction motor is accommodated in the main body. The suction motor generates suction force by rotating.

The filter is a component that filters foreign matter contained in the flowing air. The filter may include a pre-filter or a high-efficiency air filter.

The pre-filter is a filter arranged at the most upstream of the plurality of filters, formed in a mesh shape, and physically filters larger dust at a time. The pre-filter is a component that physically filters dust larger than the gaps in the mesh and increases the life of the other plurality of filters.

HEPA is the abbreviation of High Efficiency Particulate Air (HEPA), which is a component for filtering fine dust. Generally, HEPA filters use electrostatic force to filter fine dust. HEPA filters are placed downstream of pre-filters.

The main body handle can be grasped by the user. The main body handle can be formed to be similar to a cylindrical shape. Alternatively, the main body handle can be formed to be a curved cylindrical shape.

The operating unit is a component that receives instructions from the user. The operating unit can be composed of a plurality of buttons, and when the user presses a corresponding button, the corresponding instruction is executed. For example, the operating unit can be provided with a run button and a stop button.

The main body may be provided with a main battery, which is a component that stores electric energy and supplies power to various components of the vacuum cleaner including the suction motor.

The main battery may be detachably coupled to the vacuum cleaner.

The main battery can supply power to the cleaner head 1. Differently from this, the cleaner head 1 can also receive power from the sub-battery.

The extension pipe A is a component that guides the air sucked from the cleaner head 1 to the main body.

One end of the extension tube A is connected to the cleaner head 1 , and the other end is connected to the main body. Specifically, the rear end of the extension tube A is connected to the main body, and the front end of the extension tube A is connected to the cleaner head 1 .

The extension pipe A is formed in a long cylindrical shape.

A rolling axis is formed along the length direction of the extension tube A. The rolling axis is an imaginary line extending in the front-rear direction, and the cleaner head 1 can rotate around the rolling axis.

To help understand the description, the definitions for directions are as follows.

When the vacuum cleaner is cleaning, the direction having the cleaning surface may be referred to as downward, and the opposite direction to downward may be referred to as upward.

The direction from the center of the cleaner head 1 toward the cleaning member 150 may be referred to as the front, and the direction from the center of the cleaner head 1 toward the extension pipe A may be referred to as the rear.

The left side and the right side may be defined based on a state facing forward at the center of the cleaner head 1 .

The same direction as the longitudinal direction of the cleaner head 1 and/or the cleaning member 150 may be referred to as a horizontal direction.

From another point of view, when the vacuum cleaner is cleaning, the direction parallel to the cleaning surface can be called the horizontal direction.

The direction perpendicular to the plane formed by the flat plates of the cleaner head 1 and/or the lower cover 120 may be referred to as a vertical direction.

From another point of view, when the vacuum cleaner is cleaning, the direction perpendicular to the cleaning surface can be called the vertical direction.

From another point of view, when the vacuum cleaner is cleaning, the direction that is the same as gravity can be called the vertical direction.

1 to 10 are diagrams for explaining an embodiment in which the cleaner head of the present invention is suitable for a vacuum cleaner manually operated by a user.

The cleaner head 1 shown in FIGS. 1 to 10 is applicable to a vacuum cleaner and can perform dry cleaning.

The following description of the present invention based on the vacuum cleaner shown in FIGS. 1 to 10 is only an example. As mentioned above, the present invention can also be applied to a wet vacuum cleaner or a cleaning robot (see FIGS. 11 and 12 ).

Fig. 1 is a perspective view of a vacuum cleaner head 1 including a roller 130 and a roller cover 140 according to an embodiment of the present invention. Fig. 2 is an exploded view of the roller 130 and the roller cover 140 of the vacuum cleaner head 1 in Fig. 1 .

The cleaner head 1 is a component that sucks in external air or generates steam to clean a cleaning surface.

The cleaner head 1 is connected to the main body. Referring to Fig. 1 , the cleaner head 1 can be connected to an extension tube A, and can be indirectly connected to the main body through the extension tube A.

The cleaner head 1 may include a cover body 110 .

The cover 110 forms the appearance of the cleaner head 1 and is a component that forms a space for accommodating other components inside.

1 , the cover body 110 is connected to the front end of the extension tube A, and the rear end of the extension tube A is connected to the main body. The cover body 110 may be indirectly connected to the main body through the extension tube A. Alternatively, the cover body 110 may be directly connected to the main body.

The meaning of "connection" can be interpreted in various ways. For example, an air flow path extending from the cover 110 to the main body can be formed so that air containing dust flows toward the main body through the cover 110. The cover 110 can be electrically connected to the main body and the main body supplies power to the cover 110.

A suction port may be disposed on the bottom surface of the housing 110. The suction port is a component that receives suction from the main body and performs dry cleaning by sucking dust present on the floor.

The cleaner head 1 may include a lower cover 120 .

The lower cover 120 is a component that forms a part of the bottom surface of the cleaner head 1 and protects a plurality of components inside the cleaner head 1 .

The lower cover 120 may cover the lower side of the cover body 110 and be detachably coupled to the lower side of the cover body 110 .

The lower cover 120 may be formed in a shape including a flat plate so as to be able to cover the bottom surface of the housing 110 .

The lower cover 120 may be formed to close a portion of the bottom surface of the housing 110 , while another portion of the bottom surface is open so that components for cleaning are exposed to the outside.

A space in which the cleaning member 150 and a flow path of the intake air can be arranged may be formed at one side of the lower cover 120 .

For example, the cleaning member 150 may be disposed in front of the housing 110 , and the lower cover 120 may be disposed at a predetermined distance behind the cleaning member 150 .

If the lower cover 120 and the cleaning member 150 are arranged at a predetermined distance from each other, an air flow path for sucking air containing dust from the cleaning surface and causing it to flow can be formed between the lower cover 120 and the cleaning member 150 .

From another point of view, the lower cover 120 may be formed in a flat plate shape that closes the bottom surface of the cleaner head 1 except for the area occupied by the cleaning member 150 and the air flow path.

The lower cover 120 and the cleaning member 150 are spaced apart from each other by a predetermined distance, and a portion of the flat plate constituting the lower cover 120 may be formed to protrude toward the cleaning member 150 .

For example, both sides of the flat plate constituting the lower cover 120 may be formed to protrude toward the cleaning member 150. Due to the protruding area of the flat plate, the lower cover 120 may be more stably combined with the housing 110 with a wider area.

In addition, various components required for the cleaner head 1, such as the roller 130 and the roller cover 140, may be arranged on the protruding area of the flat plate.

From another point of view, the lower cover 120 may be formed to protect a plurality of components inside the cleaner head 1 by closing a position where there are no components necessary for cleaning, such as the cleaning member 150 and the air flow path.

An example of the shape of the lower cover 120 that can serve as the cleaner head 1 has been described above, but the shape is not limited to the above example, and the lower cover 120 generally protects the bottom surface of the cleaner head of the cleaner, and can be formed in various shapes.

The roller 130 is detachably coupled to the lower cover 120 and is a component that is rotatably provided and can roll on the cleaning surface.

The roller 130 is a component that enables the cleaner to maintain an appropriate distance from the cleaning surface and to smoothly run on the cleaning surface when the cleaner runs on the cleaning surface to perform cleaning.

The roller 130 may include a roller body 131 having a shape similar to a general wheel and a roller shaft 132 penetrating a rotation center of the roller body 131 .

The roller 130 can rotate around the roller shaft 132 .

A plurality of rollers 130 may be provided, and the plurality of rollers 130 perform the function of a normal wheel to reduce the friction between the cleaner head 1 and the cleaning surface, and enable the cleaner head 1 to travel on the cleaning surface while performing cleaning.

A roller receiving portion 121 may be formed in a recessed manner on the bottom surface of the lower cover 120 , and a space is provided inside the roller receiving portion 121 for introducing the roller 130 .

The roller accommodating portion 121 may be formed to be recessed upward from the bottom surface of the lower cover 120 .

A plurality of roller accommodating portions 121 may be formed corresponding to the number of the rollers 130 .

A space is formed inside the roller accommodation portion 121 so as to accommodate the roller 130 .

One or more cover support platforms 1215 may be protruded from the roller accommodating portion 121 , and the cover support platforms 1215 support the roller cover 140 and block the horizontal movement of the roller cover 140 .

The detailed shape of the inside of the roller accommodating portion 121 will be described later together with the description with reference to FIGS. 7 to 10 .

The roller cover 140 is detachably coupled to the roller accommodation portion 121 and the roller 130 , and is a component for blocking the movement of the roller 130 so that the roller 130 cannot be separated from the lower cover 120 .

A plurality of roller covers 140 may be formed corresponding to the number of rollers 130 .

The roller cover 140 may be formed in the shape of a flat plate. For example, the roller cover 140 may be formed in the shape of a flat plate bent at 90 degrees.

Here, in the roller cover 140 , the flat plate disposed in parallel with the lower cover 120 may be referred to as a cover main body 141 a , and the flat plate disposed perpendicularly to the lower cover 120 may be referred to as a cover coupling portion 141 b .

Hereinafter, the specific shape of the roller cover 140 will be described in detail with reference to FIGS. 3 to 7 .

The roller 130 disposed in the roller accommodating portion 121 of the lower cover 120 may be contaminated and worn as the cleaner head 1 of the cleaner performs cleaning, thereby reducing the running performance and generating noise.

For example, when the cleaner head 1 is cleaning, as it travels on the cleaning surface, foreign matter such as hair and dust on the cleaning surface may be entangled with components such as the roller shaft 132 .

The roller 130 continuously rotates as the cleaner head 1 performs cleaning, so once foreign matter is entangled on the roller shaft 132 or the like, it will continue to be entangled on the roller shaft 132 or the like, and may be strongly bound and difficult to remove.

If foreign matter entangled with the roller shaft 132 accumulates, the roller 130 may be difficult to rotate, thereby causing the driving performance of the cleaner head 1 to be seriously reduced, and the user may need to use more force for cleaning.

Furthermore, if the user continues to forcibly rotate the roller 130 when the roller 130 cannot rotate due to the accumulation of foreign matter entangled on the roller shaft 132, there is a risk that the roller 130 will be severely worn or damaged due to the friction between the roller 130 and the cleaning surface.

In the past, since the roller 130 could not be separated independently from the cleaner head 1, a complicated replacement process was required, or the cleaner head itself was replaced, and solving the problem required excessive costs and time.

According to the present invention, the cleaner user can solve the problem of foreign matter being accumulated inside the roller 130 by detaching the roller 130 from the cleaner head 1 alone and removing the foreign matter or attaching a new roller 130 .

Hereinafter, together with other drawings, a specific embodiment in which the roller 130 is detachably combined with the cleaner head 1 is described in more detail.

Fig. 3 is a perspective view of the roller cover 140 of the cleaner head 1 according to the embodiment of the present invention. Fig. 4 to Fig. 6 are views showing the roller cover 140 of the cleaner head 1 according to the embodiment of the present invention from various angles.

3 to 6 , the shape of the roller cover 140 according to the embodiment of the present invention is described as follows.

As described above, the roller cover 140 may include the cover main body 141 a disposed horizontally to the lower cover 120 , and the cover combining portion 141 b disposed vertically to the lower cover 120 .

The cover coupling portion 141 b may be disposed at one end of the cover body 141 a .

The cover coupling portion 141 b is a component that is vertically introduced into a cover groove 1213 to be described later so that the roller cover 140 can be firmly fixed to the lower cover 120 .

The cover coupling portion 141 b may be formed to protrude with a cover hook 142 . The cover hook 142 may protrude in a horizontal direction based on a state in which the roller cover 140 is coupled to the lower cover 120 .

The cover coupling portion 141 b may be recessed to form a first cover groove 144. The recessed direction of the first cover groove 144 may be the same horizontal direction as the protruding direction of the cover hook 142.

The first cover groove 144 will be described later together with the description of the separation auxiliary groove 1216 .

The cover body 141 a is a component that blocks the movement of the roller 130 so that the roller 130 does not separate from the lower cover 120 .

A cover supporting groove 143 into which the cover supporting platform 1215 is vertically introduced may be formed concavely at the lower side of the cover body 141 a .

The inner surface of the cover support groove 143 may be formed to be spaced apart from the cover support platform 1215 by a predetermined distance.

A second cover groove 145 may be formed concavely on a surface of the cover body 141 a that faces the cleaning surface when the cleaner head 1 is traveling on the cleaning surface.

A shaft supporting groove 146 into which a portion of the roller shaft 132 is vertically introduced may be recessed and formed at the lower side of the cover body 141 a .

The interior of the shaft support groove 146 may be formed into a curved shape so as to be spaced apart from the roller shaft 132 by a predetermined distance.

Here, the direction in which the cover support groove 143 is recessed may be orthogonal to the direction in which the shaft support groove 146 is recessed.

Fig. 7 is a view of the vacuum cleaner head 1 according to an embodiment of the present invention as viewed from below. Fig. 8 is a view for explaining the roller accommodating portion 121 formed in the vacuum cleaner head 1 according to an embodiment of the present invention. Fig. 9 is a cross-sectional view of the roller accommodating portion 121 formed in the vacuum cleaner head 1 according to an embodiment of the present invention. Fig. 10 is a cross-sectional view of the state in which the roller 130 and the roller cover 140 according to an embodiment of the present invention are combined with the vacuum cleaner head 1.

The roller receiving portion 121 may be formed with a roller groove 1211 for receiving the roller body 131. Specifically, the inner wall of the roller groove 1211 may be formed in a curved shape and spaced apart from the outer peripheral surface of the roller body 131 by a predetermined distance.

In order to assist the cleaner head 1 to move forward and backward, the roller 130 can be configured so that the rotation axis of the roller 130 is parallel to the length direction of the cleaner head 1. In such a configuration, the roller shaft 132 can also be configured to be parallel to the length direction of the cleaner head 1.

As described above, the roller groove 1211 may be formed to accommodate the roller 130 which is configured with its rotation axis perpendicular to the length direction of the cleaner head 1 .

A roller shaft groove 1212 for accommodating the roller shaft 132 may be formed in the roller accommodating portion 121 .

The inner wall of the roller shaft groove 1212 may constitute a curved surface, and the roller shaft groove 1212 may be formed to be spaced apart from the outer peripheral surface of the roller shaft 132 by a predetermined distance.

Since the roller shaft 132 penetrates the roller 130 and protrudes from two sides of the roller 130 , two roller shaft grooves 1212 may also be formed on inner sides of the roller groove 1211 facing each other.

That is, the two roller shaft grooves 1212 may be formed corresponding to the positions where the roller shaft 132 penetrates through the roller 130 and protrudes.

The roller shaft groove 1212 supports the roller shaft 132 and fixes the roller shaft 132 so that it does not escape from the outside.

A cover groove 1213 may be formed in the roller accommodating portion 121 to allow the roller cover 140 to be coupled thereto.

The cover coupling portion 141 b among the constituent elements of the roller cover 140 may be vertically introduced into the cover groove 1213 .

The cover groove 1213 may include an inner wall formed to be spaced apart from the cover coupling portion 141 b by a prescribed distance when the cover coupling portion 141 b having a flat plate shape is vertically introduced.

The roller receiving portion 121 may be recessed with a hook groove 1214 to enable the cover hook 142 to be detachably coupled.

The hook groove 1214 may be formed in at least a portion of the inner wall of the cover groove 1213. Specifically, the hook groove 1214 may be formed concavely in the inner wall corresponding to the position where the cover hook 142 is arranged when the cover coupling portion 141b is introduced into the cover groove 1213.

The cover hook 142 may be fixed by being hooked by the hook groove 1214. If at least a portion of the cover hook 142 is hooked by the hook groove 1214, the vertical movement of the roller cover 140 is blocked.

The user may operate the roller cover 140 so that the cover hook 142 is hooked by the hook groove 1214 , thereby stably combining the roller cover 140 with the lower cover 120 .

A cover support platform 1215 may be protrudingly formed on the roller receiving portion 121 to support the cover body 141 a .

The cover support platform 1215 may be formed to protrude between the roller groove 1211 and the cover groove 1213 inside the roller accommodating portion 121 .

The cover support stage 1215 may be introduced into the cover support groove 143 formed at the cover body 141 a and support the cover body 141 a .

When the cover support 1215 is coupled to the cover body 141 a , horizontal movement of the lower cover 120 may be blocked.

A plurality of cover support platforms 1215 may be protruded from the roller accommodating portion 121 .

After the roller 130 is introduced into the roller receiving portion 121 , the roller cover 140 may be coupled.

Specifically, the roller body 131 may be introduced into the roller groove 1211 , the roller shaft 132 may be introduced into the roller shaft groove 1212 , and then, the cover coupling portion 141 b may be introduced into the cover groove 1213 .

The cover support stage 1215 may be introduced into the cover support groove 143 of the roller cover 140 , and the roller shaft 132 may be coupled to the shaft support groove 146 .

At least a portion of the roller shaft 132 may be combined with the roller shaft groove 1212 , and another portion of the roller shaft 132 that is not combined with the roller shaft groove 1212 may be combined with the shaft support groove 146 .

That is, the roller shaft 132 can penetrate the roller body 131 and protrude in two directions, and is supported by the roller shaft groove 1212 and the shaft support groove 146 at the same time, and is protected so as not to be detached from the outside of the lower cover 120.

On the other hand, if the roller shaft 132 is coupled to the shaft support groove 146, the horizontal movement of the roller cover 140 can be blocked. That is, the roller shaft 132 can perform the role of the rotation axis of the roller 130 and simultaneously perform the role of blocking the horizontal movement of the roller cover 140.

From another point of view, the shaft support groove 146 can protect the roller shaft 132 from being separated from the outside of the lower cover 120, and at the same time, the roller shaft 132 can be used to block the horizontal movement of the roller cover 140.

As described above, the cover support platform 1215 may also be combined with the cover support groove 143 and block the horizontal movement of the roller cover 140 .

The direction in which the roller shaft 132 blocks the horizontal movement of the roller cover 140 may be orthogonal to the direction in which the cover support platform 1215 blocks the horizontal movement of the roller cover 140 .

For example, when the direction in which the shaft support groove 146 is recessed is orthogonal to the direction in which the cover support groove 143 is recessed, the direction in which the roller shaft 132 blocks the horizontal movement of the roller cover 140 can be orthogonal to the direction in which the cover support platform 1215 blocks the horizontal movement of the roller cover 140.

From another point of view, when the length direction of the roller shaft 132 is orthogonal to the direction in which the cover support groove 143 is recessed, the direction in which the roller shaft 132 blocks the horizontal movement of the roller cover 140 can be orthogonal to the direction in which the cover support platform 1215 blocks the horizontal movement of the roller cover 140.

With the above-described configuration, roller cover 140 is blocked from horizontal movement in all horizontal directions, and can be more firmly fixed to lower cover 120 .

As a result, if the cover hook 142 of the cover joint 141b is fastened to the hook groove 1214, the vertical movement of the cover joint 141b is blocked, the vertical movement of the cover body 141a combined with the cover joint 141b is also blocked, and the vertical movement of the roller cover 140 as a whole is blocked.

With such a configuration, roller cover 140 is blocked from moving in the horizontal direction and vertically, and thus is blocked from moving in all three-dimensional directions, so that roller cover 140 can be firmly fixed to lower cover 120 .

If the roller cover 140 is securely fixed to the lower cover 120 , the cover body 141 a may be configured to close at least a portion of the roller 130 .

Specifically, the roller cover 140 may be configured to open the roller body 131 to allow the roller body 131 to roll on the cleaning surface, and to close at least a portion of the roller shaft 132 , thereby preventing the roller 130 from coming off.

On the other hand, a separation auxiliary groove 1216 may be formed in the roller accommodating portion 121 .

The position of the separation auxiliary groove 1216 may be described based on the state in which the roller cover 140 is detachably coupled to the roller accommodating portion 121 as described above.

The separation auxiliary groove 1216 may be formed to be recessed on the opposite side of the position where the roller 130 is arranged with respect to the cover coupling portion 141 b in the horizontal direction.

When the separation auxiliary groove 1216 is formed, at least a portion of the cover coupling portion 141 b is exposed to the separation auxiliary groove 1216 .

The direction in which the cover coupling portion 141 b is exposed may be the same as the direction in which the cover hook 142 protrudes from the cover coupling portion 141 b .

In this case, with the cover coupling portion 141 b as a reference, the direction in which the separation auxiliary groove 1216 is arranged may be the same as the direction in which the cover hook 142 protrudes from the cover coupling portion 141 b .

Here, when an external force in the horizontal direction is applied to the surface of the cover coupling portion 141 b exposed to the separation auxiliary groove 1216 , the cover coupling portion 141 b can move a predetermined distance in the horizontal direction, and the cover hook 142 can also move in the horizontal direction and separate from the hook groove 1214 .

The user can separate the cover hook 142 from the hook groove 1214 and the roller cover 140 from the cover groove 1213 by inserting a finger or the like into the separation auxiliary groove 1216 and applying pressure to the surface of the cover coupling portion 141b exposed to the separation auxiliary groove 1216 in the horizontal direction, thereby separating the roller cover 140 from the cover groove 1213 and then separating the roller 130 from the roller accommodating portion 121.

The separated roller 130 can restore the driving performance degraded by the foreign matter such as hair by removing the entangled foreign matter, or it can be replaced with a new roller 130.

Users can significantly save the time and money previously spent on restoring driving performance.

On the other hand, the separation auxiliary groove 1216 may include an inclined surface formed to have a deeper depth as it is closer to the cover coupling portion 141 b .

The inclined surface can guide the finger or tool to the cover coupling portion 141 b when the user inserts the finger or tool to separate the roller cover 140 .

On the other hand, a first cover groove 144 may be formed in a recessed manner on a surface of the cover coupling portion 141 b exposed to the auxiliary separation groove 1216 .

For example, the first cover groove 144 may be formed in a rectangular shape with a long cross section so that a flat-blade screwdriver or the like can be introduced therein, but the cross-sectional shape is not limited thereto.

The user may insert a tool such as a flat-blade screwdriver into the first cover groove 144 and apply pressure to make the roller cover 140 more easily detachable.

On the other hand, a second cover groove 145 may be formed on the lower side of the cover coupling portion 141 b so as to be recessed toward the cleaning surface.

For example, the cross section of the second cover groove 145 may be formed in a circular shape so as to allow the user's finger or the like to be introduced, but the shape of the cross section is not limited thereto.

The user may insert a finger or a tool into the second cover groove 145 and apply force in the horizontal direction to separate the cover hook 142 from the hook groove 1214 , thereby separating the roller cover 140 from the lower cover 120 .

Specifically, in order to separate the roller cover 140 from the lower cover 120 , the user may insert a finger or a tool into the second cover groove 145 and apply force in a direction opposite to the horizontal direction in which the cover hook 142 protrudes.

The user can selectively adopt the above-mentioned method of inserting a tool such as a flat-blade screwdriver into the first cover groove 144 and applying pressure, or inserting a finger or the like into the second cover groove and applying pressure, or adopting the above-mentioned methods in combination, so that the roller cover 140 can be easily separated from the lower cover 120.

According to the structure of the cleaner head 1 of the present invention, there are advantages that the roller 130 and the roller cover 140 can be firmly fixed to the lower cover 120, and can be easily separated when the user wants to separate them.

FIG. 11 is a diagram for illustrating that a roller and a roller cover according to another embodiment of the present invention are applicable to a sweeping robot.

The combination structure of the vacuum cleaner head 1 of the present invention can also be applied to a sweeping robot with an autonomous driving function.

11 , the sweeping robot 2 is provided with a cover body 210 , a lower cover 220 and a cleaning member 250 . The cover body 210 constitutes the appearance of the sweeping robot 2 and has a space formed inside. The lower cover 220 covers the lower side of the cover body 210 and protects the internal components. The cleaning member 250 cleans the sweeping surface.

As a vacuum cleaner that can travel autonomously, the sweeping robot 2 may also include: a roller drive motor (not shown), which is detachably connected to the roller 230 and transmits rotational force to the roller 230 in order to rotate the roller 230; and a control unit (not shown) that controls the cleaning component 250 and the roller drive motor in order to control cleaning and travel.

With the roller 230 and the roller cover 240 of the present invention disposed on the lower cover 220 of the cleaning robot 2 , the user can easily replace the roller 230 , remove foreign matter, and maintain the driving performance of the cleaning robot 2 .

The control unit may control the rotation of the roller drive motor and/or the rotation speed, and control the driving of the cleaning member 250 .

The detailed structure and combination method of the roller 230 and the roller cover 240 are the same as or similar to those described in Figures 1 to 10. Therefore, in order to avoid repeated description, the detailed description thereof is omitted.

FIG. 12 is a diagram for explaining that a roller and a roller cover according to another embodiment of the present invention are applicable to a wet vacuum cleaner.

The wet cleaner 3 is a cleaning device that is provided with a rotatable mop or the like and performs wet cleaning.

12 , the wet vacuum cleaner 3 is provided with a cover body 310 , a lower cover 320 and a cleaning member 350 . The cover body 310 constitutes the appearance of the wet vacuum cleaner 3 and forms a space inside. The lower cover 320 covers the lower side of the cover body 310 and protects the internal components. The cleaning member 350 cleans the cleaning surface.

With the roller 330 and the roller cover 340 of the present invention disposed on the lower cover 320 of the wet cleaner 3 , the user can easily replace the roller 330 and maintain the driving performance of the wet cleaner 3 by removing foreign matter.

The detailed structure and combination method of the roller 230 and the roller cover 240 are the same as or similar to those described in Figures 1 to 10. Therefore, in order to avoid repeated description, the detailed description thereof is omitted.

Although preferred embodiments of the present invention have been illustrated and described above, the application scope of the present invention is not limited to the above-mentioned vacuum cleaners, and can of course be applied to all commercial vacuum cleaners.

The present invention is not limited to the specific embodiments described above, and a person skilled in the art may perform various modified implementations without departing from the spirit of the present invention as claimed in the claims, and these modified implementations cannot be understood separately from the technical ideas or expectations of the present invention.

Claims (11)

1. A cleaner head, comprising:

a cover body forming an external appearance and having a space formed therein;

A cleaning member which is disposed in the space inside the cover and cleans a cleaning surface;

A lower cover covering the lower side of the cover body, wherein a roller accommodating part is concavely formed on the lower side surface of the lower cover;

a roller detachably coupled to an inside of the roller receiving part, and rotatably provided to roll on the cleaning surface; and

And a plate-shaped roller cover detachably coupled to the roller receiving part and the roller to block the separation of the roller.

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

The roller receiving part includes a cover groove formed in a vertical recess,

The roller cover includes:

A cover main body disposed in parallel with the lower cover; and

A cover coupling portion disposed perpendicularly to the cover main body;

The cover coupling part is disposed at one end of the cover main body and vertically introduced into the cover groove.

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

The roller receiving part includes a hooking groove formed in the inner wall of the cover groove in a horizontal recess,

The cover coupling part includes a cover hook formed to be horizontally protruded,

The cover hook is disposed at a position facing the hook groove, and the cover hook is detachably coupled to the hook groove.

4. The cleaner head according to claim 2, wherein,

The roller includes:

a roller body formed in a cylindrical shape; and

A roller shaft configured to penetrate a rotation center of the roller body;

The roller housing part includes:

The roller groove is recessed to form a curved surface formed by the inner wall for introducing at least one part of the roller main body;

More than one roller shaft groove, the concave forming a curved surface for at least a part of the roller shaft to be introduced; and

And a cover support stand vertically protruding to form and support the cover main body.

5. The cleaner head of claim 4, wherein,

The cover body further includes:

a shaft supporting groove, wherein the vertical recess is formed in such a way that the inner wall forms a curved surface for vertically introducing at least a part of the roller shaft; and

And the cover supporting groove is used for vertically introducing the cover supporting table.

6. A cleaner head according to claim 5, wherein,

The roller shaft and the cover support table are coupled to the cover main body and block horizontal movement of the cover main body,

The direction in which the roller shaft blocks the horizontal movement of the cover main body and the direction in which the cover support table blocks the horizontal movement of the cover main body are orthogonal to each other.

7. A cleaner head according to claim 3, wherein,

The roller receiving part further includes a separation auxiliary groove formed to be recessed at the opposite side in the horizontal direction of the position where the roller is disposed with respect to the cover coupling part,

At least a part of the cover coupling portion is exposed to the inner space of the separation auxiliary groove,

If an external force is applied to an exposed portion of the cover coupling portion in a horizontal direction, the cover hook moves horizontally and is separated from the hook groove.

8.A cleaner head according to claim 7, wherein,

A first lid groove is formed in the lid coupling portion in a portion exposed to the separation auxiliary groove.

9. A cleaner head according to claim 7, wherein,

The separation auxiliary groove is formed with an inclined surface which is deeper as approaching the depth of the cover joint portion.

10. A cleaner head according to claim 7, wherein,

The lower side surface of the cover main body is concavely provided with a second cover groove.

11. A robot cleaner, comprising:

a cover body forming an external appearance and having a space formed therein;

a cleaning member disposed in a space inside the cover body and configured to clean a cleaning surface;

A lower cover covering the lower side of the cover body, wherein a roller accommodating part is concavely formed on the lower side surface of the lower cover;

A roller detachably coupled to an inside of the roller receiving part, and rotatably provided to roll on the cleaning surface; and

A roller driving motor detachably connected with the roller and transmitting a rotational force to the roller;

And a plate-shaped roller cover detachably coupled to the roller receiving part and the roller to block the separation of the roller.