JP2634000B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a power brush.

[0002]

Will be explained based on BACKGROUND ART accordance come example in FIGS. 8 to 1 2. FIG. 8 is an explanatory diagram showing the configuration of the vacuum cleaner . Figure 9 is a transverse sectional view of the power brush. 10 Pas
It is a longitudinal sectional view of Waburashi. Figure 1 1 is a power brush
It is the schematic. 1 2 is an external view of a hand switch provided at hand the hose.

A power brush 3 containing a rotating brush 1 and a brush rotating motor 2 and an extension tube 4 connected to a part thereof
The hose 5 having flexibility is connected to a bent tube 6 attached to the tip of the hose 5, and the other end of the hose 5 is connected to the cleaner body 7.

A paper bag filter 10 is attached to a check valve 8 via a paper bag support 9 at the front of the cleaner body 7. At the rear of the paper bag filter 10, an auxiliary filter 10a for collecting fine dust passing through the paper bag filter 10 is provided.

[0005] A dust collecting motor 11 is provided at the rear of the cleaner body 7.
And a control device 12 for controlling the dust collection motor 11. The control device 12 controls the dust collection motor 11 by changing the resistance value of a slide volume (not shown) interlocked with a hand switch 5 a provided at the hand of the hose 5.
The number of rotations is changed by controlling the amount of electric power supplied to the motor.
Reference numeral 13 denotes a code reel for winding the power cord 13a. Swivel 14 and wheels 15 are located at the bottom of the cleaner body.
At the top is a carrying handle 16.

The external appearance of the power brush 3 is constituted by a suction port main body 17, a sled 18, and a suction pipe 19, and a brush rotation motor 2 is built therein.
There is a rotating brush 1 that is decelerated by a belt 20 using the driving source as a driving source.

The rotating brush 1 has a reduction gear 21 at the other end.
And shafts 22 at both ends are supported by bearings 23 provided on the sled 18. Rotating body 1a of rotating brush 1
, A blade 24 of a soft material such as rubber is inserted.

A bumper 25 is wound around the power brush 3. Reference numeral 26 denotes wheels provided on the sled 18.

The operation of the vacuum cleaner requires a strong suction force, for example, when cleaning a carpet.
Switch manually to match "strong". Then, the dust collection motor 1 is controlled by the control device 12 provided in the cleaner body.
1 rotates at the highest number of revolutions to obtain the highest suction force.

[0010] Similarly, the rotation speed of the rotating brush 1 is changed or stopped according to the location of the cleaning, and the hose 5 is also used.
The switch is manually switched by a switch 5b provided at the position, for example, when it is set to "strong", the motor rotates at the highest rotational speed.

In this way, the dust is collected by the dust collecting motor 11, and the brush rotating motor 2 rotates,
The rotating brush 1 decelerated by 0 rotates to scrape up dust on the cleaning surface and is cleaned.

On the surface to be cleaned, for example, on a floor or a fold, the rotation of the rotary brush 1 is stopped to prevent scratches and noise from the impact of the brush on the floor, and cleaning is performed.

[0013]

It is troublesome to manually stop and operate the rotating brush, switch the number of revolutions, and adjust the suction force each time according to the place to be cleaned or the surface to be cleaned. there were.

On the floor or tatami floor, a rotary brush is not used to prevent scratches and to prevent noise due to the impact of the brush on the floor, so that efficient cleaning cannot be performed.

If the rotating brush is accidentally rotated on the tatami mat, the tatami mat may be damaged.

[0016]

The vacuum cleaner of the present invention comprises:
For vacuum cleaners with a power brush,
Detection that detects the number of rotations of the rotating brush that changes with the load
Device and the rotation of the rotating brush detected by the detection device.
A control for controlling a drive motor of the rotating brush according to the number of rotations.
A control device is provided, and the control device is provided with the detection device.
Of the rotation speed of the rotating brush within a predetermined time
Calculation means for calculating the load on a plurality of different cleaning surfaces.
The variation width of the number of rotations of multiple rotating brushes for each
Storage means for storing, and a buffer calculated by the calculation means.
Variation width and a plurality of variation widths stored in the storage means
And load determining means for determining the load on the cleaning surface,
Based on the output of the load determining means.
Control the power supply to an amount suitable for the load on the cleaning surface .
Characterized in that a control means is provided.

As the detecting device, a magnetic material is provided on the rotating brush, and a reed switch is provided on a sled at a position facing the magnetic material.

[0018]

According to the above construction, the vacuum cleaner of the present invention has a
Detects the number of rotations of the rotating brush that changes with the load on the surface to be removed
A rotating device detected by the detecting device.
The drive motor for the rotating brush is controlled according to the number of rotations of the brush.
And a control device for controlling the detection device.
Position of the rotating brush within a predetermined time
Calculation means for calculating the width of the gap, and a plurality of different cleaning surfaces
Variation in rotation speed of multiple rotating brushes for each load
Storage means for storing the wood width, calculated by the calculating means
And the plurality of buffers stored in the storage means.
Load judgment to judge the load on the cleaning surface by comparing with the width of rack
Means for controlling the driving mode based on the output of the load determining means.
The amount of power supplied to the data
Control means to control the cleaning surface
The variation width of the rotating speed of the rotating brush
To determine what the load on the cleaning surface is.
And the amount of power supplied to the drive motor to the load on the cleaning surface
Automatically controls the power supply to a suitable level and
Automatically set the number of rotations of the rotating brush
You.

[0019]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an electric sweeper according to an embodiment of the present invention.
It is a transverse sectional view of a power brush removal machine. Figure 2 of the present invention
It is a longitudinal sectional view of a power brush according vacuum cleaner to an embodiment. FIG. 3 is a diagram showing determination conditions of the microcomputer. FIG. 4 is a control block diagram of the vacuum cleaner according to one embodiment of the present invention. FIG. 5 shows an embodiment of the present invention .
It is a control flow chart of the hunt vacuum cleaner. FIG.
Shows the variation in the number of rotations of the rotating brush on each cleaning surface
FIG . FIG. 7 is an external view of a hand switch of the vacuum cleaner according to one embodiment of the present invention. The same parts as those in the conventional example are denoted by the same reference numerals.

A power brush 3 containing a rotating brush 1 and a brush rotating motor 2, and an extension tube 4 connected to a part thereof
The hose 5 having flexibility is connected to a bent tube 6 attached to the tip of the hose 5, and the other end of the hose 5 is connected to the cleaner body 7.

A paper bag filter 10 is attached to a check valve 8 via a paper bag support 9 at the front of the cleaner body 7. At the rear of the paper bag filter 10, there is provided an auxiliary filter 10a for collecting fine dust passing through the paper bag filter 10.

At the rear of the cleaner body 7, a dust collecting motor 11 is provided.
And a control device 12 for controlling the dust collection motor 11 and the brush rotation motor.

[0023] The controller 12 includes a microcomputer, has a memory, and a power supply or the like, the detection device 3
The two motors are controlled in accordance with the variation width of the number of rotations of the rotating brush detected by 3 . The memory includes a plurality of loads for each of a plurality of different cleaning surfaces.
The variation width of the number of rotations of the rotating brush is stored.

Reference numeral 13 is a code reel for winding the power cord 13a. A swivel wheel 14 and wheels 15 are provided at a lower portion of the cleaner body, and a carrying handle 16 is provided at an upper portion.

[0025] The power brush 3, appearance is composed of a suction port body 17 and sled 18 and suction pipe 19, the brush rotating motor 2 is incorporated in the inner portion. This motor 2
As a drive source and a rotary brush 1, which is decelerated by the belt 20 a.

The rotating brush 1 has a reduction gear 21 at the other end.
And has shafts 22 at both ends, and is supported by bearings 23 provided on the sled 18. Rotating body 1 of rotating brush 1
A magnet 31 is fixed to one end of “a”.

A reed switch 32 is provided on the sled 18 facing the magnet 31. The reed switch 32 is turned on and off by the magnetic force of the magnet 31 rotating together with the rotating brush 1 . The magnet 31 and the reed switch 32 constitute a detection device 33 for detecting the number of rotations of the rotary brush 1.

Reference numeral 24 denotes a blade formed of a soft material such as rubber, which is inserted into the rotating body 1a. A bumper 25 is wound around the power brush 3. Reference numeral 26 denotes wheels provided on the sled 18.

The control unit 12 reads the number of rotations of the rotating brush 1 a plurality of times from the detection unit 33, obtains a maximum value and a minimum value, and calculates the difference as a variation width.
4, this variation width and the difference stored in the memory
Multiple rotating brushes for each load on multiple cleaning surfaces
Compare the variation width of the number of rotations to determine the load on the cleaning surface.
The load determining means 35 is provided.

Then, as a result of the determination, the load determination means 3
5 to supply power to both motors 2 and 11 based on the output of
There is a control means 36 for controlling the amount to a power supply amount suitable for the load on the cleaning surface .

Next, the operation of the vacuum cleaner according to this embodiment will be described. When the switch 5c of the hose 5 is turned on, power is supplied to the dust collection motor 11 and the brush rotation motor 2, so that the rotating brush 1 of the power brush 3 rotates and the dust collection motor 11 rotates to absorb dust.

The variation width of the number of rotations of the rotating brush 1 changes depending on the load on the cleaning surface. In the present embodiment , the controller 12 automatically sets the number of rotations according to the type of load on the cleaning surface using the amount of change.

Firstly, take readings <br/> by detector 33 the number of ON-OFF of the reed switch 32 provided in the sled 18 by the rotation of the magnet 31 attached to the rotary brush 1. This signal is 500m
A total of 10 readings (5 seconds) are performed every second, the number of readings is compared, and the maximum value and the minimum value are calculated.
Is calculated by Thereby, the width of the variation in the number of rotations of the rotating brush is calculated.

The variation width and the load of each of the plurality of different cleaning surfaces stored in the memory are different.
The variation width of the rotation speed of the plurality of rotating brushes 1 is compared with the load determining means 35. If the width is "large", the cleaning surface is determined as "carpet", and the dust collection motor 11 and the brush rotation motor are determined. The power supply amount which makes 2 “strong” depends on the control means 36.
Is controlled by

If the width is not "large", it is compared with the next "medium", and if it is "medium", it is determined as "tatami". If it is not “medium”, it is compared with the next “small”, and if “small”, it is determined as “floor”. Then, the power supply amount of each motor suitable for the load on each cleaning surface is controlled to rotate each motor.

For example, when cleaning a room on the floor, the rotating speed of the rotating brush 1 is the highest because the load of contact between the rotating brush 1 and the floor is light. Further, the width of the variation is minimized. Now, suppose that the rotating speed of the rotating brush 1 is 4500.
At rpm, the number of counters from the reed switch 32 is 38 counts / 500 msec. Reads the data 10 times, Ru can be calculated the variation width when compared.

FIG. 6 shows the result of measuring the number of rotations of the rotating brush on each cleaning surface. From this, it can be seen that the variation width of the “floor” is small, and that of the “carpet”, the variation width is large although there is a difference depending on the type.

[0038]

[Effect of the Invention] As described above reads the rotational speed of the variation width of the rotating brush varying I by <br/> to the load of the cleaning surface, made in the carpet, when the variation width is large When it is folded, when it is small, it is judged as the floor, and the rotating brush is driven.
Adjust the amount of electric power supplied to the motor to an electric power
It is possible to automatically control the supply amount and automatically set the number of rotations of the rotating brush suitable for the load on the cleaning surface .

Therefore , according to the load on the cleaning surface to be cleaned , there is no need to manually switch each time, and the optimum number of revolutions is automatically obtained, and the user's convenience is improved.
You can get a good electric cleaning.

[0040] or not also damage the tatami by rotating the rotary brush on the tatami by mistake.

Since the magnet and the reed switch are used as the detecting device, the detecting device can be inexpensive.

[Brief description of the drawings]

FIG. 1 shows the power of a vacuum cleaner according to one embodiment of the present invention.
It is a transverse sectional view of the brush.

FIG. 2 shows the power of the vacuum cleaner according to one embodiment of the present invention .
It is a longitudinal section of a brush.

FIG. 3 is a diagram showing determination conditions of a microcomputer.

FIG. 4 is a control block diagram of the vacuum cleaner according to one embodiment of the present invention.

FIG. 5 is a control flow chart of the vacuum cleaner according to one embodiment of the present invention .
It is a low chart .

FIG. 6 is a diagram showing a variation in the number of rotations of a rotating brush on a cleaning surface.

FIG. 7 is an external view of a hand switch of the vacuum cleaner according to one embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a configuration of a conventional vacuum cleaner .

FIG. 9 is a cross-sectional view of the power brush.

10 is a longitudinal sectional view of the power brush.

FIG. 11 is a circuit diagram of a power brush .

FIG. 12 is an external view of a hand switch.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating brush 2 brush rotating motor 3 power brush 11 dust collecting motor 12 control device 31 magnet 32 reed switch 33 detecting device 34 calculating means 35 load determining means 36 control means

Claims (1)

(57) [Claims] In a vacuum cleaner having a power brush, a detecting device for detecting a rotating speed of the rotating brush which changes according to a load on a cleaning surface, and a detecting device for detecting the rotating speed of the rotating brush detected by the detecting device. Rotary brush drive mode
And a control device provided for controlling the motor, to the control device, calculating means for calculating the rotational speed of the variation width of the rotating brush in a predetermined time period by the detecting device, a plurality of different sweep
Number of rotations of multiple rotating brushes for each surface load
Storage means for storing the variation width of
Calculated variation width and the duplication stored in the storage means.
Comparing the variation width of the number with the load determining means for determining the load on the cleaning surface , based on an output of the load determining means.
Adjust the amount of power supplied to the drive motor to the power suitable for the load on the cleaning surface
An electric vacuum cleaner comprising a control means for controlling a supply amount .