KR100809737B1 - Cleaner - Google Patents

Abstract

A cleaner is provided to improve efficiency of cleaning by projecting a blade to the surface to be cleaned if the surface to be cleaned having the small friction force is cleaned. A cleaner comprises a cleaner body, a blade(23) attached to a suction port at the lower end of the body, and a rotation unit(24) rotating the blade around an axis horizontally positioned. The rotation unit rotates the blade toward the surface to be cleaned if the friction force on the surface to be cleaned is smaller than the first friction force on the carpet, and rotates the blade toward the body if the friction force on the surface to be cleaned is larger than the first friction force on the carpet. The body has a receiving space(25), where the blade is inserted, including an edge for restricting rotation of the blade. The rotation unit consists of a rotation shaft formed on one end of the blade, an engaging hole of the body wherein a rotation shaft of the blade is inserted, and an elastic member whose one end is engaged to the rotation shaft and the other end is engaged to the body.

Description

Cleaner {Cleaner}

1 is a view showing the bottom of a general cleaner, in particular a robot vacuum cleaner,

Figure 2a is a perspective view of a portion of the blade is mounted on the bottom of the cleaner according to the present invention;

Figure 2b is an enlarged perspective view of the blade in the above embodiment,

Figure 3a is a view showing a blade operating when the cleaning surface is less frictional force,

Figure 3b is a view showing the operation of the blade, when the frictional force of the cleaning surface is large.

<Description of the symbols for the main parts of the drawings>

23: braid

24: rotating unit

25: space

26: spiral spring

31: floorboard

32: Carpet

The present invention relates to a cleaner, and more particularly to a blade attached to the bottom of the cleaner.

At the bottom of the cleaner, a suction part for sucking dust and dirt and a protruding blade are attached to collect dust and the like adjacent to the suction part to increase cleaning efficiency.

1 shows the underside of a cleaner, in particular a robot vacuum cleaner.

As shown in FIG. 1, the robot cleaner is provided with a cleaner body 1 having a suction port, a fan motor, and a filter therein, and a lower side of the cleaner body 1 so as to suck and remove dust or dirt from the floor. A driving wheel (2) installed to be driven so that the cleaner can run, a suction inlet (3) installed around the driving wheel (2) for sucking dust or dirt from the floor, and a rotation inside the suction hole (3). It is possible to have an agitator (4) to be installed and sweep the dust or dirt attached to the floor to facilitate the suction and the blade (5) adjacent to the suction port to collect the dirt in the suction port direction.

The robot cleaner detects the cleaning area and obstacles by using the sensor 6 installed in the cleaner under the control of the controller, and moves the edge area 4 to the suction port while the edge data 4 rotates the dust or dirt on the cleaning surface while driving the cleaning area. Sucked. At this time, the dust, etc., which could not be removed, is caught by the blade 4 and collected in the direction of the suction port, and is suctioned secondarily.

However, when the cleaner cleans a high friction surface, such as a carpet, due to the friction between the blade and the carpet, the protrusion of the blade acts as a significant load on the running of the cleaner.

Accordingly, the present invention is a means to solve the above problems, when cleaning the cleaning surface with a small friction force is raised to the cleaning surface to increase the cleaning efficiency, when cleaning the cleaning surface with a large friction force is received by the cleaner by rotating the blade in the body direction The purpose is to reduce the load.

In order to solve the above problems, the cleaner according to the present invention comprises a blade attached to the body of the cleaner, the lower end of the body adjacent to the suction port; And a rotating unit for rotating the blade.

At this time, the rotating unit is preferably rotated to the blade toward the cleaning surface when the cleaning surface is less than the first friction force of the carpet, and rotating the blade in the body direction when the cleaning surface is greater than the first friction force of the carpet.

In addition, the body has a receiving space in which the blade is inserted. The accommodation space may be formed with a jaw to limit the rotation of the blade.

The rotating unit may include a rotating shaft formed at one end of the blade, a coupling hole of the body into which the rotating shaft of the blade is fitted, and an elastic member having one end coupled to the rotating shaft and the other end coupled to the body.

The elastic force of the elastic member is preferably equal to or less than the first friction force between the blade and the carpet, and equal to or more than the second friction force between the blade and the floor.

Most preferably, the elastic force of the elastic member is the first friction force between the blade and the carpet.

In this case, the first frictional force may be determined as an average frictional force of the lower 20% of the frictional force values between the plurality of carpets and the blades.

In addition, the second frictional force may be determined as the average frictional force of the top 20% of the frictional force values between the plurality of floors and the blade.

The elastic member is preferably a spiral spring.

The blade may be provided with a groove into which one end of the spiral spring is fitted.

According to another aspect of the present invention, a cleaner includes a body of a cleaner; The blade is attached to the lower end of the body adjacent to the suction port, the angle is adjusted with respect to the cleaning surface in accordance with the magnitude of the friction force of the cleaning surface.

In this case, it is preferable that the blade is rotated in the direction perpendicular to the cleaning surface when the cleaning surface is greater than the first friction force of the carpet, and is rotated in the body direction when the cleaning surface is smaller than the first friction force of the carpet.

The body may be provided with a receiving space into which the blade is inserted.

In addition, the jaw is preferably formed in the receiving space to limit the rotation of the blade.

It is preferable to further include a rotating unit including a rotating shaft formed at one end of the blade, a coupling hole of the body into which the rotating shaft of the blade is fitted, and one end coupled to the rotating shaft and the other end coupled to the body.

The elastic member may be a spiral spring.

Preferably, the blade is provided with a groove into which one end of the spiral spring is fitted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Figure 2a is a view showing a perspective view of the blade portion of the cleaner according to the present invention, Figure 2b is an enlarged perspective view of the blade only. Referring to Figure 2a, the cleaner according to the present invention is attached to the lower end of the body 21 of the cleaner, the blade 23, the blade 23 attached adjacent to the suction port 22 for sucking the dirt of the cleaning surface A rotating unit 24 for rotating, and a receiving space 25 formed in the body so that the blade 23 is inserted.

The rotating unit 24 has a rotating shaft 23a formed at one end of the blade 23, a coupling hole 21a of the body into which the rotating shaft 23a of the rotating unit is fitted, and one end of the rotating shaft of the blade 23 ( 23a) and the other end is provided with a spiral spring 26, which is an elastic member that is coupled to the body 21. One end of the spiral spring 26 is coupled to the body, and the other end is inserted into the groove 23b formed in the blade 23 to impart rotational force to the blade 23. In addition, a jaw 25a is formed in the accommodation space 25 into which the blade 23 is inserted to limit the rotation of the blade 23.

The elastic force of the spiral spring 26 is set to be less than the first frictional force between the blade 23 and the carpet and greater than the second frictional force between the blade and the floor.

Accordingly, the rotating unit 24 rotates the blade 23 toward the cleaning surface when the cleaning surface is smaller than the first friction force of the carpet, and rotates the blade 23 toward the body 21 when the cleaning surface is larger than the first friction force of the carpet. Rotate

3A shows the operation of the blade 23 when the cleaning surface 31 is less than the first frictional force, for example a smooth floor. When the cleaning surface 31 is a surface having a small frictional force, the blade 23 rotates in the direction of the cleaning surface 31 by the rotational force of the spiral spring 26, and at this time, the blade 23 is the cleaning surface 31 due to the jaw 25a. It is kept vertical with. As a result, the blade 23 collects dust or dirt on the cleaning surface.

3B is a view showing the operation of the blade 23 of the cleaner when the frictional force of the cleaning surface is greater than the first friction force, for example, the carpet 32. In this case, the friction force between the blade 23 and the carpet 32 is greater than the rotational force by the spiral spring 26 so that the blade 23 rotates in the direction of the body 21 and is inserted into the receiving space 25.

Thus, the blade 23 is in contact with the cleaning surface 32 at an angle to reduce the load received by the cleaner.

The size of the first frictional force the blade is rotated is determined by measuring the frictional force between a plurality of commercially available carpet and the blade used in the embodiment. That is, the frictional force between the plurality of carpets and the blades may be measured, and for example, the lower 20% average frictional force may be determined as the first frictional force. If the first friction force is determined in this way, the blade can be rotated on most carpets on the market.

In addition, the size of the second friction force may measure the frictional force between a plurality of floors and blades sold on the market, and for example, the average frictional force of the top 20% may be determined as the second frictional force. Determining the second friction force in this way allows the blade to maintain its vertical position on most floors on the market.

When the first friction force and the second friction force are determined, the elastic force of the spring is set to be equal to or greater than the first friction force and less than the second friction force. Most preferably, it is possible to balance the elasticity of the spring with the first friction force.

Although the embodiments of the present invention have been described in the robot cleaner, the present invention is not limited to the robot cleaner and can be applied to the general cleaner in the same configuration.

According to the configuration of the cleaner according to the present invention as described above, when cleaning the cleaning surface with a small friction force, the blade rotates to the cleaning surface to increase the cleaning efficiency by collecting dirt, etc. of the cleaning surface, when cleaning the cleaning surface with a large friction force, the blade rotates toward the body By reducing friction, the load on the cleaner can be reduced.

Claims (18)

Body of the cleaner; A blade attached to a lower end of the body adjacent to the suction port; And And a rotating unit for rotating the blade about an axis positioned horizontally. The method of claim 1, The rotating unit rotates the blade toward the cleaning surface when the cleaning surface is less than the first friction force of the carpet, The cleaner for rotating the blade in the direction of the body when the cleaning surface is greater than the first friction force of the carpet. The method of claim 1, The body is provided with a cleaner space is inserted into the blade cleaner. The method of claim 3, Cleaner is formed in the receiving space jaw to limit the rotation of the blade. The method of claim 1, The rotating unit is a rotating shaft formed at one end of the blade, A coupling hole of the body into which the rotating shaft of the blade is fitted; One end is coupled to the rotating shaft and the other end is provided with an elastic member coupled to the body cleaner. The method of claim 5, The elastic force of the elastic member is less than the first friction force between the blade and the carpet, the cleaner is greater than the second friction force of the blade and the floor. The method of claim 5, The elastic force of the elastic member is a cleaner that is the first friction force between the blade and the carpet. The method of claim 2, The first frictional force is a cleaner that determines the average frictional force of the lower 20% of the frictional force value between the plurality of carpet and the blade. The method of claim 6, The second friction force is determined by the average friction force of the top 20% of the friction force value between the floor and the plurality of blades. The method of claim 5, The elastic member is a spiral spring cleaner. The method of claim 10, The blade cleaner is formed with a groove to which one end of the spiral spring is fitted. Body of the cleaner; It is attached to the lower end of the body adjacent to the inlet, Cleaner having a blade that is angled with respect to the cleaning surface according to the magnitude of the friction force of the cleaning surface. The method of claim 12, The blade is rotated in a direction perpendicular to the cleaning surface when the cleaning surface is greater than the first friction force of the carpet, The cleaner is rotated in the direction of the body when the cleaning surface is less than the first friction force of the carpet. The method of claim 12, The body is provided with a cleaner space is inserted into the blade cleaner. The method of claim 12, Cleaner is formed in the receiving space jaw to limit the rotation of the blade. The method of claim 12, A rotating shaft formed at one end of the blade, A coupling hole of the body into which the rotating shaft of the blade is fitted; One end is coupled to the rotating shaft and the other end of the cleaner further comprises a rotating unit including an elastic member for coupling to the body. The method of claim 16, The elastic member is a spiral spring cleaner. The method of claim 17, The blade cleaner is formed with a groove to which one end of the spiral spring is fitted.

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