JPH06154A - Cleaner - Google Patents

Abstract

PURPOSE:To obtain the cleaner which decides a carpet to be a carpet irrespective of length of hair, and can discriminate it from a floor and a mat. CONSTITUTION:The cleaner is provided with a floor nozzle 4, a brush 6 which is contained therein and scrapes up dust on the floor surface, a brush motor 5 for transmitting a rotation to this brush, a roller 7 which is contained in the floor nozzle and rotated freely, a cover 20 for limiting a contact range of this roller and the floor surface, a roller rotation detecting means 9 for detecting a rotation of the roller, and a floor surface deciding means 10 for deciding the floor surface from an output of this roller rotation detecting means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner for automatically determining a floor surface.

[0002]

2. Description of the Related Art Conventionally, as a vacuum cleaner of this kind, a floor nozzle is used to judge the floor surface by friction between the roller built in the floor nozzle and the floor surface, or a floor surface is judged by the impact force of the floor surface. However, there is one that controls the rotation of the fan motor according to the floor surface to change the dust collection force, and rotates or stops the brush in the floor nozzle.

[0003]

However, the conventional techniques described above cannot distinguish between a carpet with short fluff and a tatami mat in any of the methods, and a carpet with a short fluff cannot be distinguished. There were times when the dust was weak, and the brush in the floor nozzle was rotated when the tatami mat was turned and the tatami mat was damaged.

The present invention is intended to solve such a conventional problem, and to provide a vacuum cleaner which can determine a carpet as a carpet regardless of the length of the fluff and can distinguish the floor from the tatami mat. Is the primary purpose.

In addition to the first object, a second object is to provide a cleaner capable of automatically controlling the rotation of the fan motor according to the kind of the floor surface and performing efficient cleaning.

A third object of the present invention is to provide a cleaner capable of automatically determining the type of floor surface and automatically controlling the rotation of the brush according to the type of floor surface.

[0007]

A first means of the present invention for achieving the first object is to provide a floor nozzle, a brush built in the floor nozzle, and a brush for scraping dust on the floor surface, and the brush. A brush motor that transmits rotation, a roller that is built into the floor nozzle and rotates freely, a cover that limits the contact range between this roller and the floor surface, roller rotation detection means that detects the rotation of the roller, and this roller rotation detection A floor cleaner for determining the floor surface from the output of the cleaner is provided.

A second means of the present invention for achieving the second object is a fan motor for collecting dust, a floor nozzle, and a brush built in the fan motor for scraping up dust on the floor surface. A brush motor that transmits rotation to the brush, a roller that is built into the floor nozzle and rotates freely, a cover that limits the contact range between the roller and the floor surface, and a roller rotation detection unit that detects the rotation of the roller. A vacuum cleaner having a floor surface determination means for determining the floor surface from the output of the roller rotation detection means and a fan motor control means for controlling the rotation of the fan motor from the output of the floor surface determination means. .

A third means of the present invention for attaining the third object is a fan motor for collecting dust, a floor nozzle, and a brush built in the fan motor for scraping dust on the floor. A brush motor that transmits rotation to the brush, a roller that is built into the floor nozzle and rotates freely, a cover that limits the contact range between the roller and the floor surface, and a roller rotation detection unit that detects the rotation of the roller. A floor surface judging means for judging the floor surface from the output of the roller rotation detecting means, a brush motor control means for controlling the rotation of the brush motor from the output of the floor surface judging means, and an output of the brush motor control means And a brush motor rotating means for rotating the brush motor.

[0010]

The first means of the present invention is such that the cover is provided in the vicinity of the roller built in the floor nozzle, and the roller is rotated by this cover only when the floor surface is a carpet. Is. By utilizing this, it acts as a vacuum cleaner that automatically determines the floor surface.

The second means of the present invention, in addition to the operation of the first means of the present invention, acts to control the fan motor in accordance with the type of floor surface, so that efficient cleaning can be performed. It is a vacuum cleaner.

The third means of the present invention further functions as a vacuum cleaner capable of controlling the rotation of the brush according to the type of floor surface and performing effective cleaning according to the type of floor surface.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. 1 is the main body of the vacuum cleaner, 2
Is a fan motor installed in the main body 1 and has a fan 3. A floor nozzle 4 has a built-in brush motor 5, brush 6, and roller 7 for scraping up dust on the floor surface. Reference numeral 8 is a brush motor rotating means for rotating the brush 6.
Reference numeral 9 denotes a roller rotation detection means, which detects the rotation of the roller 7 and sends this signal to the floor surface determination means 10. Reference numeral 11 is a commercial power source. Reference numeral 12 is a control circuit built in the operating portion 18 at the hand of the vacuum cleaner, which includes brush motor rotation means 8, roller rotation detection means 9, floor surface determination means 10, fan motor rotation means 13, fan motor control means 15 and brushes. The motor control means 16 is included. The floor surface determination means 10 determines the type of floor surface from this output, and transmits this output to the fan motor control means 15 and the brush motor control means 16. The fan motor control means 15 controls the rotation of the fan motor 2 via the fan motor rotation means 13 according to the type of floor surface. Further, the brush motor control means 16 controls the rotation of the brush motor 5 via the brush motor rotation means 8. The fan motor control means 15, brush motor control means 16, and floor surface determination means 10 are realized by the microcomputer 14. Reference numeral 20 denotes a cover disposed on the floor surface side of the roller 7, and the roller 7 is exposed to a window portion 19 provided in a part of the cover 7, and acts to limit the floor surface in contact with the roller 7.

The operation of the embodiment of the present invention will be described below. The roller 7 built in the floor nozzle 4 rotates lightly with a slight frictional force, and it rotates when it touches the hair of the carpet or touches the tatami mat, protrusions or steps. However, in this embodiment, the roller 20 is provided with the cover 20. Therefore, as described in FIG. 3, the roller 7 can continue to rotate only when the kind of floor surface is a carpet. That is, when the kind of the floor surface is a carpet, as shown in FIG. 3 (a), since the hairs of the carpet are densely planted, the hairs enter through the window portion 19 of the cover 20 and roll. 7 can be touched and rotation can continue throughout the movement of the floor nozzle 4. Further, when the material of the floor surface is the floor, as shown in FIG. 3B, the cover 20 hits the floor and the floor does not directly contact the roller 7. Therefore, the roller 7 does not rotate. Further, as shown in FIG. 3C, when there is a protrusion or a step on the floor surface, when the protrusion or the step is smaller than the width of the window portion 19 of the cover 20, the window portion 1 of the cover 20.
The roller 7 may be rotated by entering from the position 9.
However, this rotation ends only when the bump or step hits it, and does not last. Therefore,
It can be distinguished from the rotation by the carpet. When the protrusion or the step is larger than the width of the window portion 19 of the cover 20, the roller 7 is not blocked by the cover 20 and does not touch the roller 7, and the roller 7 does not rotate, so that it can be distinguished from the carpet. When the floor surface is rough, as shown in FIG. 3D, the cover 20 is located on the rough surface, and the surface of the floor surface does not touch the roller 7. Therefore, since the roller 7 does not rotate, it can be distinguished from the carpet.

Next, the case of a tatami mat will be described. Figure 3
As shown in (e), when the width of the window portion 19 of the cover 20 is larger than the width of the tatami mat, the tatami mat is soft and the window portion can be suppressed even if the cover 20 suppresses each one of the tatami mountains. The portion of the tatami mat is put in 19 and comes out above the cover 20, or the portion of the mountain between the covers 20 comes out above the cover 20 when the cover 20 reaches the valley of the tatami mat. Therefore, the roller 7 touches the tatami mat and rotates. But Figure 3
As shown in (f), when the window portion 19 of the cover 20 is smaller than the width of the tatami mat, the cover 20 suppresses the peak of one tatami mat.
It is possible to distinguish it from a carpet without rotating.

As described above, if the rotation of the roller 7 continues, the roller rotation detection means 9 detects it, and the floor surface determination means 10 can determine that the current floor surface is a carpet, and conversely the rotation must be continued. For example, you can judge that it is a floor or tatami mat.

Next, when the floor surface is a carpet, dust may be entangled with the fluff of the carpet, so it is necessary to suck the dust with a stronger suction force than that of the floor / tatami mat. That is, it is necessary to increase the suction force of the vacuum cleaner and improve the dust collection efficiency. Therefore, when the output from the floor surface determination means 10 indicates that the current cleaning surface is a carpet, the fan motor control means 15 increases the rotation speed of the fan motor 2 to increase the suction force. Send a signal to 13. In response to this, the fan motor rotating means 13 increases the rotation speed of the fan motor 2 and increases the suction force. On the other hand, when the floor type is floor / tatami, dust is attached to the surface or does not get tangled like a carpet just by entering the eyes of the tatami mat, so the suction force is weak compared to the carpet surface. Is. With the same suction force as the carpet surface, it is a waste of power. Therefore, when the floor surface determination means 10 determines that the current floor surface is a floor / tatami, the fan motor control means 15 reduces the rotation speed of the fan motor 2 via the fan motor rotation means 13 to suppress the suction force. It works like this.

In other words, the user does not judge the material of the floor surface to manually switch the suction force, but automatically adjusts the suction force according to the type of floor surface.

Next, when the floor surface is a carpet, dust is entangled in or inside the fluff of the carpet, so that it is difficult to remove it simply by increasing the suction force. Therefore, when the kind of floor surface is a carpet, the brush 6 incorporated in the floor nozzle 4 is further rotated. In other words, by rotating the brush 6, the carpet surface is hit to separate the dust, and the dust is scraped up and sucked. In the present embodiment, when the output from the floor surface determination means 10 indicates that the current floor surface is a carpet, the brush motor control means 16 sends a signal to the brush motor rotation means 8 to send the brush motor 5
Is rotating. On the other hand, if the floor type is floor / tatami, the brush 6 will rotate and hit the floor / tatami, causing damage. Therefore, the rotation must be stopped. When the floor surface determination means 10 determines that the floor is a tatami mat, the brush motor control means 10 acts via the brush motor rotation means 8 to stop the rotation of the brush motor 5.

As described above, according to the present embodiment, the user does not set the control of the brush 6 by judging the kind of the floor surface, but automatically rotates the brush 6 according to the kind of the floor surface. Is to control.

In the above embodiment, the fan motor rotating means 13, the brush motor rotating means 8, the roller rotation detecting means 9, the fan motor controlling means 15, the brush motor controlling means 16 and the floor surface determining means 10 are at the operating portion 18 at hand. However, even if it is provided in the floor nozzle portion or in any other place, it does not matter. Further, although the roller 7 has a round shape, it may be polygonal or any other shape as long as it can rotate.

[0022]

The first means of the present invention is a floor nozzle, a brush built in the floor nozzle, for scraping up dust on the floor surface, a brush motor for transmitting rotation to the brush, and a floor nozzle for free rotation. A roller that rotates around, a cover that limits the contact range between the roller and the floor surface, a roller rotation detection unit that detects the rotation of the roller, and a floor surface determination unit that determines the floor surface from the output of the roller rotation detection unit. It is possible to provide a vacuum cleaner that can reliably determine the type of floor surface as a configuration including the above.

A second means of the present invention is a fan motor for collecting dust, a floor nozzle, a brush built in the fan motor for scraping dust on the floor surface, and transmission of rotation to the brush. A brush motor, a roller that is built into the floor nozzle and rotates freely, a cover that limits the contact range between this roller and the floor surface, roller rotation detection means that detects the rotation of the roller, and the output of this roller rotation detection means. To determine the floor surface from the floor surface, and a fan motor control means for controlling the rotation of the fan motor from the output of the floor surface determination means. Therefore, it is possible to provide a vacuum cleaner that can be effectively cleaned.

A third means of the present invention is a fan motor for collecting dust, a floor nozzle, a brush built in the fan motor, for scraping up dust on the floor surface, and transmitting rotation to the brush. A brush motor, a roller that is built into the floor nozzle and rotates freely, a cover that limits the contact range between this roller and the floor surface, roller rotation detection means that detects the rotation of the roller, and output of this roller rotation detection means. A floor surface determining means for determining the floor surface from the brush surface, a brush motor control means for controlling the rotation of the brush motor from the output of the floor surface determining means,
Provided is a vacuum cleaner capable of automatically controlling the rotation of a brush according to the type of floor surface, as a configuration having brush motor rotating means for rotating the brush motor according to the output of the brush motor control means. Is something that can be done.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a vacuum cleaner of the present invention.

FIG. 2 is an overall perspective view showing a schematic configuration of the cleaner.

FIG. 3 is an explanatory diagram illustrating a rotation operation of a roller of the vacuum cleaner.

[Explanation of symbols]

 1 Main Body 2 Fan Motor 4 Floor Nozzle 5 Brush Motor 6 Brush 7 Roller 8 Brush Motor Rotating Means 9 Roller Rotation Detecting Means 10 Floor Surface Determining Means 15 Fan Motor Controlling Means 16 Brush Motor Controlling Means

Claims (3)

[Claims] 1. A floor nozzle, a brush built in the floor nozzle to scrape up dust on the floor, a brush motor for transmitting rotation to the brush, a roller built in the floor nozzle and freely rotating, and this roller. A vacuum cleaner having a cover for limiting the contact range with the floor surface, a roller rotation detection means for detecting the rotation of the roller, and a floor surface determination means for determining the floor surface from the output of the roller rotation detection means. 2. A fan motor for collecting dust,
A floor nozzle, a brush built in this to scrape up dust on the floor surface, a brush motor that transmits rotation to this brush, a roller that is built into the floor nozzle and rotates freely, and the contact between this roller and the floor surface A cover that limits the range, roller rotation detection means that detects the rotation of the roller, floor surface determination means that determines the floor surface from the output of this roller rotation detection means, and output of this floor surface determination means from the fan motor A vacuum cleaner having fan motor control means for controlling rotation. 3. A fan motor for collecting dust,
A floor nozzle, a brush built in this to scrape up dust on the floor surface, a brush motor that transmits rotation to this brush, a roller that is built into the floor nozzle and rotates freely, and the contact between this roller and the floor surface A cover that limits the range, roller rotation detection means that detects the rotation of the roller, floor surface determination means that determines the floor surface from the output of this roller rotation detection means, and rotation of the brush motor from the output of this floor surface determination means. A cleaner having brush motor control means for controlling the brush motor and brush motor rotation means for rotating the brush motor according to the output of the brush motor control means.