KR20060038798A - Robot cleaner - Google Patents

Abstract

In order to more stably inhale dust and the like on the bottom, the present invention is a sweeper for sweeping up the foreign matter of the suction floor; A shroud provided to surround an outer circumference of the sweeper; And it provides a vacuum cleaner suction nozzle comprising an auxiliary cover protruding to the upper side of the shroud so as to be spaced apart from the outer peripheral portion of the sweeper to form a space therein, the suction port is formed on one side.

Robot Cleaner, Suction Nozzle, Sweeper

Description

Robot Cleaner {ROBOT CLEANER}

1 is an external perspective view of a robot cleaner to which a preferred embodiment of the present invention is applied.

Figure 2 is a perspective view showing the internal structure of the robot cleaner to which the preferred embodiment of the present invention is applied.

Figure 3 is a perspective view showing the bottom of the robot cleaner to which the preferred embodiment of the present invention is applied.

4 is a top perspective view of the suction nozzle according to the present invention;

5 is a bottom perspective view of the suction nozzle according to the present invention;

6 is a partially cutaway perspective view of the suction nozzle according to the present invention;

***** Description of the symbols for the main parts of the drawings *****

2: body 10: wheels

3: suction device 4: suction nozzle

5: dust collector 6: suction pipe

26: rotary fixing part 27: the stopper

30: shroud 31: auxiliary cover

33: inlet 40: sweeper

41: axis of rotation 42: blade

The present invention relates to a suction nozzle, and more particularly to a suction nozzle for a cleaner having a stable dust suction structure.

In general, the vacuum cleaner is a device for cleaning the floor or the carpet of the room, and is provided inside the cleaner body to drive air containing foreign substances by driving the air suction device composed of a motor and a fan to generate air suction force. After suctioning from the outside, the foreign matter is separated and collected, and the device for discharging the purified air separated from the foreign matter to the outside of the cleaner.

The vacuum cleaners are classified into manual vacuum cleaners which are directly operated by a user and robot cleaners which perform cleaning by themselves without the user's manipulation.

Here, the robot cleaner automatically cleans the area to be cleaned by inhaling foreign substances such as dust from the floor while driving itself in the area to be cleaned.

To this end, the robot cleaner is provided with a distance sensor for detecting the distance to the obstacles such as furniture, office supplies, walls, and the like, and left and right wheels for moving the robot cleaner.

Here, the left and right wheels are configured to rotate by the left wheel motor and the right wheel motor, respectively, so that the robot cleaner performs the cleaning of the room by changing the direction by itself according to the driving of the left wheel motor and the right wheel motor.

A suction means is provided inside the robot cleaner main body, and a lower surface of the robot cleaner is a suction hole through which the dust is sucked. Furthermore, the suction port is rotatably mounted with a sweeper for sweeping up dust on the bottom of the cleaning area.

In addition, a filter is provided on the air flow path inside the robot cleaner to purify the air by filtering foreign substances in the air sucked from the floor. Therefore, the robot cleaner performs cleaning automatically by moving dust in the floor by collecting the suction force by the suction means and the rotation of the sweeper while collecting the dust in the main body by collecting the filter.

However, some of the dust swept away by the rotation of the sweeper mounted on the suction port of the conventional robot cleaner is discharged back to the floor due to the narrow gap between the side wall of the suction port and the end of the sweeper.

In order to solve the above problems, an object of the present invention is to provide a suction nozzle for a cleaner having a more stable dust suction structure.

In order to achieve the above object, the present invention is a sweeper for sweeping up the foreign substance of the suction bottom; A shroud provided to surround an outer circumference of the sweeper; It is in communication with the upper portion of the shroud provides a suction nozzle is formed on one side and comprises an auxiliary cover for providing a space for collecting the foreign matter.                     

Hereinafter, a cleaner according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a robot cleaner according to the present invention, Figure 2 is a perspective view showing the internal configuration of the robot cleaner, Figure 3 is a bottom view of the robot cleaner.

As shown in FIGS. 1 to 3, the robot cleaner 1 includes a main body 2 forming an appearance, a suction device 3 provided inside the main body 2 to suck air, and the suction device 3. It comprises a suction nozzle (4) provided in the lower portion of the main body to suck the dust of the floor by the drive of the), and a dust collector (5) for collecting the foreign matter in the air sucked by the suction nozzle (4) . In addition, the main body 2 is provided with a control unit 15 for controlling the robot cleaner to operate automatically without a user's operation.

Here, the robot cleaner 1 is formed of a cylindrical shape, that is, a relatively low height relative to the diameter, that is, a flat cylindrical shape, the inside of the main body 2, the air suction device 3, the suction nozzle 4 and the The dust collector 5 is provided in communication with the suction nozzle.

When the internal configuration of the robot cleaner 1 will be described in more detail, the front part of the main body 2 is provided with a controller 15 for controlling the driving of the robot cleaner 1, At the rear, a battery 7 for supplying power to the air intake device 3 or the like is provided.

On the other hand, the lower left and right driving wheels 10 for the movement of the robot cleaner 1 are provided on both lower sides of the main body 2, respectively. Drive wheels driven by a motor are respectively provided on the left and right sides of the bottom of the main body 2, and the auxiliary roller 25 is provided on at least one or more necessary portions of the bottom. Therefore, the robot cleaner 1 is moved by the rotation of the driving wheel 10 while minimizing friction with the floor by the auxiliary roller 25.

Here, the left and right driving wheels 10 are rotated in connection with the left wheel motor 11a and the right wheel motor 11b respectively controlled by the controller 15, and the left wheel motor 11a and the right wheel motor 11b are rotated. The robot cleaner 1 performs the cleaning of the room while changing the direction by itself.

On the other hand, the rear of the battery 7 is provided with the air suction device 3 for generating an air suction force, the rear of the air suction device 3 is provided with the dust collector (5). In addition, the suction nozzle 4 is provided below the dust collector 5 to suck foreign substances at the bottom together with air.

Here, the air intake device 3 includes a motor (not shown) electrically connected to the battery 7 and a fan (not shown) connected to the rotating shaft of the motor to force the flow of air. In addition, the suction nozzle 4 is exposed to the lower side of the main body 2 through an opening formed in the bottom of the main body 2 to be in contact with the floor of the room, the foreign matter is driven by the suction device (3) Inhale the air contained. Air containing foreign matter sucked from the suction nozzle (4) is introduced into the dust collector (5) through the suction pipe (6).                     

A filter assembly is provided in the dust collector 5 to purify foreign substances such as dust from the sucked air by the filter assembly. Therefore, the foreign matter contained in the air flowing into the dust collector 5 is collected in the dust collector 5, the air from which the foreign matter is removed is discharged to the outside of the main body 2 through the fan.

Figure 4 is a perspective view showing the configuration of the suction nozzle according to the invention, Figure 5 is a bottom side perspective view of the suction nozzle, Figure 6 is a partially cut perspective view of the suction nozzle.

4 and 5, the outer frame of the suction nozzle 4 is composed of a shroud 30 that functions as a passage through which the sucked air moves. Inside the shroud 30, a sweeper 40 is detachably mounted to move the dust of the bottom of the cleaning area upward, and after cleaning, the sweeper 40 can be disassembled and replaced or cleaned. have.

In addition, the front both sides of the shroud 30 is provided with a rotatable fixing part 26 rotatably coupled to the main body, and the rear side of the shroud 30 is provided with a stopper 27 constrained to the main body. . In addition, the auxiliary roller 25 is rotatably mounted on the rear bottom surface of the shroud 30. Thus, even when moved along the bottom of the uneven cleaning zone, the suction nozzle 4 is rotated up and down about the rotary fixing part 26 to be in uniform contact with the ground. At this time, the rather heavy motor 35 is mounted to the rear of the suction nozzle 4 to serve as a weight, thereby preventing the suction nozzle 4 from vibrating violently up and down by vibration. In addition, the stopper 27 is restrained by the main body to prevent the suction nozzle 4 is completely rotated downward when the robot cleaner is lifted upward.

On the other hand, the sweeper 40 is rotatably mounted on both sides of the shroud 30 is rotated by receiving the rotational force of the motor 35. In more detail, the rotary shaft 35a of the motor 35 is connected by the sweeper 40 and the belt 36, and when the rotary shaft 35a is rotated, the sweeper 40 is also rotated together and dust on the bottom surface. Swipe to move up.

Here, the outer circumferential portion of the sweeper 40 may be installed to be in contact with the floor of the cleaning area, but is not limited thereto and may be mounted to sweep up the foreign substances of the floor sucked by the above-described suction device at a slight interval from the floor. It may be. In the latter case, the smooth movement of the cleaner is ensured by reducing the friction between the suction nozzle bottom and the floor to a minimum.

The sweeper 40 mounted inside the suction nozzle 4 includes a rotating shaft 41 and at least one blade 42. As shown in FIG. 5, the blade 42 spirally protrudes from the outer surface of the rotation shaft 41, and as the rotation shaft 41 is rotated, the foreign material is pushed upward from the bottom surface and collected at one side at the same time. do.

On the other hand, when the edge of the suction port 33 formed on the upper side of the shroud 40 and the outer peripheral portion of the blade 42 is in close contact with each other, the vacuum suction input applied to the suction port 33 is divided between the spiral blades 42. It is difficult to transfer smoothly between each space. In addition, the blade 42 is rotated at a high speed before the foreign material is sucked into the suction port by the suction force, the foreign material hit the edge of the suction port 33 and discharged again to the outside, thereby reducing the dust removal performance of the floor.

In order to prevent this, as shown in Figure 6, the upper cover of the shroud 30 is provided with an auxiliary cover 31 for forming a free space.

Here, the shroud 30 is formed in a shape surrounding the outer periphery of the sweeper 40 to guide the movement of foreign matter by the sweeper 40, the inside of the shroud 31 is the shroud It is provided with an auxiliary cover 31 in communication with the upper space inside. Since the inside of the auxiliary cover 31 should communicate with the upper portion of the shroud 30, the auxiliary cover 31 and the shroud 30 is preferably formed integrally. In addition, one side of the auxiliary cover 31 is formed with a suction port 33 is connected to the suction device to suck the foreign matter by the vacuum suction input.

Therefore, the foreign matter is sucked into the suction port 33 after the helical blade 42 is moved to one side where the suction port 33 is formed. Here, the auxiliary cover 31 is provided in a shape projecting on the upper side of the shroud 30 so as to be spaced apart from the outer peripheral portion of the sweeper 40 by a predetermined interval (g). Therefore, a predetermined interval is secured between the outer circumferential portion of the sweeper 40 and the edge of the suction port 33 so that the foreign matter moved upward by the blade 42 hits the edge of the suction port 33 and is discharged again to the outside. At the same time, the foreign matter is more stably suctioned through the suction port 33.

In addition, the suction force applied to the suction port 33 is more smoothly transmitted to the space between the blades 42 through the free space formed on the inside of the auxiliary cover 31 so as to be positioned between the blades 42. The foreign matter is moved to one side where the inlet 33 is located more quickly. Therefore, the foreign matter is more stably suctioned through the suction port 33.

The structures of the shroud 30 and the auxiliary cover 31 will be described in more detail as follows.

First, the distance between the inner surface of the shroud 30 provided in the lower portion of the auxiliary cover 31 and the outer circumference of the sweeper 40 is very narrow to 1 to 1.5 mm so that foreign matters including dust are separated through the gap. On the other hand, the gap g between the outer circumferential portion of the sweeper 40 and the auxiliary cover 31 is preferably spaced apart by 3 mm or more larger than the above-described gap, while preventing leakage. If the distance g is too large, an unnecessarily large suction force is required, so the distance g between the outer circumference of the sweeper 40 and the auxiliary cover 31 is preferably limited to 3 to 10 mm. .

On the other hand, as shown in Figure 6, the cross section of the auxiliary cover 31 is preferably made of a "c" shape. Therefore, the suction force is smoothly transmitted between the blades 42 through the space of the "c" shape, and the foreign matter collected on one side while being loaded on the blade 42 and moved upwards hits the edge of the suction port 33. Suction stably without.

Here, the suction port 33 is preferably formed on the upper surface of the auxiliary cover 31, the upper surface of the auxiliary cover 31 is preferably formed to be inclined downward with respect to the edge of the suction port (33). That is, the gap formed with the outer circumferential portion of the sweeper 42 is the highest at the portion of the upper surface of the auxiliary cover 31 in which the suction port 33 is located, and as the distance from the suction port 33 decreases, the auxiliary gap is reduced. The upper surface of the cover 31 is formed to be inclined.

That is, when the external foreign matter moved upward by the blade 42 gathers to one side where the suction port 33 is located, in order to prevent the external foreign material from hitting the edge of the suction port 33 and discharged to the outside again, The upper surface of the auxiliary cover 31 is formed to be inclined so as to form a larger clearance around the suction port 33. Through this, the foreign matter is more stably suctioned through the suction port 33.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit and scope. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above detailed description, but may vary within the scope of the appended claims and their equivalents.

As described above, the suction nozzle for a cleaner according to the present invention has the following effects.

First, since the auxiliary cover protrudes to the upper side of the shroud so as to be spaced apart from the outer peripheral portion of the sweeper by a predetermined distance to form a free space therein, the foreign matter moved upward by the blade does not hit the edge of the suction port stably. May be inhaled.

Second, the suction force applied to the suction port is transmitted to the space between the blades through the free space formed inside the auxiliary cover, so that foreign matters located between the blades are moved to one side where the suction port is located more quickly, and thus more stable suction is possible. Can be.

Claims (7)

A sweeper for sweeping up foreign matter on the inhaled floor; A shroud provided to surround an outer circumference of the sweeper; And A suction nozzle for a cleaner comprising an auxiliary cover protruding to the upper side of the shroud so as to be spaced apart from the outer circumferential portion of the sweeper to form a space therein, and having a suction port formed at one side thereof. The method of claim 1, The sweeper has a rotating shaft, Suction nozzle for a cleaner, characterized in that it comprises at least one blade formed spirally on the outer surface of the rotating shaft. The method of claim 1, The predetermined interval is a suction nozzle for a cleaner, characterized in that 3 ~ 10 mm. The method of claim 1, The upper surface of the auxiliary cover is a suction nozzle for a cleaner, characterized in that formed inclined downward from the inlet rim. The method of claim 1, The shroud and the auxiliary cover is a suction nozzle for a cleaner, characterized in that formed integrally. The method of claim 1, Cross section of the auxiliary cover is a suction nozzle for a cleaner, characterized in that the "c" shape. A sweeper for sweeping up foreign matter on the inhaled floor; A shroud provided to surround an outer circumference of the sweeper; And A suction port is formed on an upper surface, and the upper surface includes a suction cover for a cleaner, the auxiliary cover being formed to be inclined downward so as to maximize the distance between the edge of the suction port and the outer peripheral portion of the sweeper.

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