JP2829206B2 - 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 and, more particularly, to an operation control of an electric blower and a motor for driving a rotary brush.

[0002]

2. Description of the Related Art Conventionally, a vacuum cleaner that has a built-in electric motor inside a suction port and rotates a rotating brush is well known.
In particular, recently, avoiding danger when touching the rotating brush during high-speed rotation, preventing the floor from being damaged by rotating the rotating brush with the suction port stopped moving, and suction from the viewpoint of energy saving There are motors that stop a rotating brush driving motor (hereinafter referred to as a motor) in a state where the mouth is not moved and a state where the suction port is turned over.

The former (hereinafter, referred to as a first embodiment) has a universal wheel that rotates by frictional force with the floor when the suction port is moved back and forth on the floor, and that the rotation stops. Some motors detect and stop the motor.

In the latter case (hereinafter referred to as a second embodiment), a switch which is turned on and off by a moving body is provided in the suction port, and this switch is turned on when the suction port is in use, and the suction port is turned over. In some cases, the switch is turned off and the operation of the electric motor in the suction port is controlled.

Further, as a device for controlling the number of revolutions of the rotating brush and the input of the electric blower (hereinafter referred to as a third embodiment),
There are known those in which a change in suction pressure is detected by a pressure sensor, and a change in current consumption of a motor for driving a rotary brush is detected by a current sensor.

[0006]

In the first embodiment, when the operation of the suction port is stopped or lifted, the electric motor stops without fail. However, the motor can be freely operated when the suction port is operated not in the front-back direction but in the left-right direction. The car did not rotate and the motor stopped.

When the suction port is lifted up by hand, the motor stops as described above. However, when the free wheel touches the hand, the free wheel is brought into the same state as touching the floor surface. As a result, there is a risk that the rotating brush may rotate up to the rotating brush, inadvertently catch a finger on the rotating brush, and cause injury.

In the case of the second embodiment, when the suction port is turned over, the switch is turned off by the moving body and the motor stops, but the moving body does not move only by being lifted without turning over. Since the switch is kept ON, the electric motor does not stop and the rotating brush is kept rotating, so that there is a risk that a finger may be accidentally caught in the rotating brush. Further, even when the suction port is left on the floor, the electric motor does not stop, so that there is a problem that the rotary brush scratches the floor.

In the case of the third embodiment, the operation control of the electric blower and the rotating brush driving motor is performed. However, since the pressure control and the current sensor are used for the operation control, there is a disadvantage that the product cost is high. Was.

As described above, the conventional control means cannot ensure the safety in all states of the suction port, and the automatic operation control of the electric blower or the rotary brush driving motor does not perform the above-described operation of the suction port. It has a control means different from the control means, which is costly.

Accordingly, an object of the present invention is to provide a vacuum cleaner which realizes a safe stop function of a rotating brush and automatic operation control by detecting a floor surface.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a cleaner body having a built-in electric blower, a floor suction port having a rotating brush driven by rotating brush driving means , and the like. In a vacuum cleaner having a control circuit for controlling a rotary brush driving means in accordance with a use state of the floor suction port, as one of the means, when the floor suction port is operated on a cleaning surface, cleaning is performed. only set a Hanaregi sensing means the a vibration detection unit detecting vibration due to friction with the uneven or cleaning surface faces the floor suction port detects whether away from cleaning surface, said vibration detecting means in advance If the vibration is not continuously detected for the set time or more, or if the detachment detection means does not detect the landing continuously for the preset time, the rotation brush driving means
The rotation of the rotating brush is stopped or decelerated.

[0013] as a means of one more to solve, before Symbol
During operation of the rotary brush drive means, by an output signal of at least one of the detection means of the detection means, said system
It is assumed that the control circuit stops or controls the input of the electric blower.

[0014] means one more for resolving the system based on the output signal of the vibration sensed by the sensing means
The control circuit determines the cleaning surface and based on the cleaning surface
The circuit brush driving means according to a signal from the control circuit
And a reversing drive means for controlling the rotation direction of the rotating brush .

As another means for further solving the problem, the rotating brush driving means or the rotating brush driving means is provided by the detecting means.
Is the stopped control of the electric blower, if the vibration by said detection means continuously preset time or more is detected, the rotational brush driving means or before being stopped the control
To so that you start the serial electric blower.

Another solution for solving the problem is as follows.
The rotating brush driving means or
During the deceleration control of the electric blower, after a preset time.
If vibration is detected continuously by the detection means
In this case, the deceleration control is released. By providing the vibration / separation detecting means in which the vibration detecting means and the detaching means are configured as one detecting means in the floor suction port, the detecting means is reduced in size and a low-cost detecting means is provided. it can.

[0017]

By providing the above means, (1) during cleaning, the floor suction port is not operated on the cleaning surface, or when the floor suction port is lifted from the cleaning surface, the state is maintained for a preset time or more. Then, since the rotating brush driving means stops, the rotating brush is not touched. In addition, even if the rotating brush is touched, the rotating brush does not rotate.

(2) Energy saving and low noise can be achieved by stopping or decelerating the electric blower when the rotating brush driving means stops or decelerates.

(3) The rotation direction of the rotating brush, which is adapted to the material of the floor surface, is obtained by the reversing driving means for reversing the rotating direction of the rotating brush driving means according to the vibration signal of the vibration detecting means, and the cleaning efficiency is improved. .

(4) While the rotary brush driving means and the electric blower are stopped by the vibration detecting means, if the vibration is detected by the detecting means for a preset time or more, the two electric motors are started. Cleaning can be restarted by simply moving the floor suction port without any operation.

(5) By constituting the vibration detecting means and the detachment detecting means as one detecting means, the detecting means can be reduced in size and a low-cost detecting means can be provided.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is an external view showing the overall configuration of the vacuum cleaner of the present invention, and FIG.
Is a plan view of the floor suction port with the cover removed, FIG. 3 is a control circuit block diagram, and FIG. 4 is an electric circuit diagram.

Reference numeral 1 denotes a cleaner main body, in which an electric blower 17 is provided.
And a suction hose 3 in the suction port 2 of the cleaner body 1.
One end of the suction hose 3 is detachably connected, and an operation section 5 is provided on the grasping section 4 of the suction hose 3. An extension pipe 6 is connected to the other end of the suction hose 3, and a floor suction port 7 is bonded to a tip of the extension pipe 6.

The operating section 5 controls the phase of the input voltage to the electric blower 17 by operating the operating knob 8 provided on the operating section 5 to adjust the suction force of the cleaner body 1.

The floor suction port 7 comprises a <br/> rotary brush driving motor (hereinafter referred to as motor) 11 for driving the rotary brush 9 and the rotating brush 9 for floor cleaning inside through the belt 10 , The dust sucked up from the floor, the floor suction port 7,
The dust passes through the extension pipe 6 and the suction hose 3 and is collected in a dust bag (not shown) built in the cleaner body 1.

The rotating brush 9 is rotatably supported by the floor suction port 7 so that the rotating force of the electric motor 11 is applied to the belt 1.
The rotation is transmitted at a reduced speed via 0.

The motor 11 is controlled by the type of floor surface, that is, the load. The control is performed by a control device 12. The control device 12 generally controls the rotation of the electric motor 11 by an operation signal from the operation unit 5. A vibration detection circuit 14 that outputs a control signal according to the following, and a detachment detection circuit 16 that outputs a control signal based on a detection signal of a detachment detection unit 15 that detects detachment of the floor suction port 7 from the floor surface,
The rotation, stop, rotation speed, rotation direction, and the like of the electric motor 11 are controlled by signals from the vibration detecting means 13, the detachment detecting means 15, the vibration detecting circuit 14, and the detachment detecting circuit 16.

A control block diagram of the vacuum cleaner of the present invention is shown in FIG. As described above, the electric blower 17 and the electric motor 11 are controlled by the operation unit 5, the vibration detection unit 13, and the detachment detection unit 15, respectively.

The vibration detecting means 13 detects vibration caused by unevenness of the cleaning surface when the floor suction port 7 is moved on the cleaning surface, and one embodiment thereof is shown in a sectional view of a main part of FIG. . The vibration detecting means 13 is mounted on the bottom surface 7a of the floor suction port 7 and includes a piezoelectric element 18, a vibration actuator 19, and a vibration spring 20.

The vibration actuator 19 is set to such an extent that when the floor suction port 7 is placed on a cleaning surface of a flooring system, such as between boards, the spring 20 makes a light contact with the cleaning surface.

The piezoelectric element 18 generates an electric charge differentially in proportion to a change in applied stress. The piezoelectric element 18 causes a slight vertical change caused by moving a vibration actuator 19 on a cleaning surface via a spring 20. To detect a change in stress. The charge generated by the change in the stress is converted into a voltage signal by a vibration detection circuit 14 described later, and is used as a signal for stopping the rotating brush 9 of the type of the cleaning surface and the floor suction port 7.

The separation / attachment detecting means 15 is provided at the floor suction port 7.
Is detected as to whether or not is lifted from the cleaning surface, and one embodiment thereof is shown in a sectional view of a main part of FIG. 6 (a). The attachment / detachment detecting means 15 is attached to the bottom surface 7a of the floor suction port 7, and is constituted by a micro switch 21 and a detachment / attachment actuator 22. FIG. 6B is a cross-sectional view of a main part showing another embodiment, which is constituted by a reed switch 23 and a detection actuator 25 having a permanent magnet 24.

When the floor suction port 7 lands on the cleaning surface, the detection actuator 22 (25) is located inside the floor suction port 7 and turns on the micro switch 21 (reed switch 23). Controlling. When the floor suction port 7 is lifted from the cleaner surface, the detection actuator 2
2 (25) is a detection actuator 22 from the floor suction port 7;
The micro switch 21 (reed switch 23) is turned off by the self weight of (25) and the urging force of the actuator 21a of the micro switch 21 (self weight of the permanent magnet 24).

6 (a) and 6 (b), the vibration detecting means 13 and the detachment detecting means 15 have been described as being separate from each other, but it is also conceivable to configure both means as one detecting means. The configuration will be described below in detail with reference to FIG.

The vibration / separation detecting means 26, in which the vibration detecting means 13 and the detachment detecting means 15 are integrated, comprises a piezoelectric element 18, a vibration spring 27, a separation spring 28, a detection actuator 29, and a piezoelectric element actuator 30. , Provided on the bottom surface 7 a of the floor suction port 7,
Reference numeral 9 is provided so as to come into contact with the cleaning surface when the floor suction port 7 is placed on the cleaning surface.

When the floor suction port 7 is lifted (FIG. 7A), the detection actuator 29 is urged downward by a detachment spring 28 in order to reliably operate as a detachment detection means. At this time, the gap between the detection actuator 29 and the piezoelectric element 18 is provided slightly larger than the sum of the length of the vibration actuator 29 and the free length of the vibration spring 27.

When the floor suction port 7 is placed on a cleaning surface such as a space between plates, the detection actuator 29 as shown in FIG.
Is moved upward against the urging force of the attachment / detachment spring 28 and the vibration spring 27, and is adjusted so that the vibration actuator 29 pushes the piezoelectric element 18 lightly.

The operation section 5 is provided on the handle 4 of the suction hose 3 as described above, and the operation circuit 30 is housed in the handle 4. When the user operates the operation knob 8 or the like, a signal of the operation content is sent from the control circuit 31 incorporated in the cleaner body 1 to the drive circuit 32 via the operation circuit 30, and the drive circuit 32 The electric blower 17 is controlled by the output signal of.

Next, FIG. 8 shows a detailed description of the vibration detection.
And FIG. When the floor suction port 7 is used on the cleaning surface, the vibration actuator 29 moves up and down due to the unevenness of the cleaning surface, so that the vibration spring 27 causes the piezoelectric element 18 to vibrate.

Since the state of the unevenness differs depending on the cleaning surface, the vibration detected by the piezoelectric element 18 is, for example, as shown in FIG.
b, in a flooring system such as between boards, a signal as shown in FIG.

The electric charge output from the piezoelectric element 18 is input to the vibration detection circuit 14. That is, in FIG. 9, the operational amplifier 3 is provided as a voltage signal via a high-impedance discharge resistor 33 and protective clamp diodes 34 and 35.
6 is input.

The operational amplifier 36 operates as a voltage-following impedance conversion circuit for converting a signal from the high-impedance piezoelectric element 18 to a low impedance, and includes a resistor 37 and a capacitor 38 for removing noise components.
Is input to the control circuit 31 via a low pulse filter composed of

The vibration signals obtained by the vibration / separation detecting means 26 are shown in FIGS.
b, c, but on the carpet-based cleaning surface of FIG. 8A, the peak period of the output signal is long,
It is characteristic that the peak value is high and the peak value varies widely.

FIG. 8B shows a signal obtained by folding, in which the peak period is shorter than that of the carpet and the peak value is lower.

FIG. 8C shows a signal on a flooring-type cleaning surface having a small amount of irregularities such as a gap between plates. The signal has a short peak period and a peak value lower than that of any of the cleaning surfaces. is there.

As described above, the material and type of the cleaning surface can be discriminated and detected from the characteristics of the output signal generated by the type of cleaning surface. As a result, the output signal is cleaned by the control circuit 31 from the electric blower 17 and the motor 11. It is possible to control a state suitable for the surface, that is, start, stop, rotation speed, rotation direction, and the like.

Although not shown in FIG. 8, when the operation of the floor suction port 7 is stopped or when the floor suction port 7 is lifted from the cleaning surface, no change occurs in the output signal, and it goes without saying that the output signal is zero.

In the detachment detection, when the floor suction port 7 is lifted above the cleaning surface, the vibration actuator 29 is turned on by the vibration spring 2.
7 and the spring force of the attachment / detachment spring 28, the piezoelectric element 1
8, the vibration of the piezoelectric element 18 disappears, a switch (not shown) is turned off, and the circuit of the electric motor 11 is opened to stop the rotation of the electric motor 11.

A control method for controlling the motor 11 by determining the type and material of the cleaning surface based on the vibration on the cleaning surface will be described below. For example, FIG.
As shown in FIG. 10, when the rubber blade 39 and the brush 40 are spirally arranged in parallel, the carpet is raised on the carpet by the rubber blade 39 as shown in FIG. The rotation is controlled in the scraping direction, that is, in the counterclockwise direction, and the rotation is controlled in the clockwise direction so that the cleaning surface is swept by the brush bristles 40 as shown in FIG.

The above-described control of the rotation direction is performed by the vibration detection signal of the cleaning surface by the vibration / separation detecting means 26 shown in FIG.
Those having a high peak value and being unstable, such as -a, are determined to be "carpets", and are controlled counterclockwise by the control circuit 31 by the inversion drive circuit 32a. In addition, FIG.
In the case of a stable signal such as c, it is determined that the signal is a folding / flooring system, and the control circuit 31 controls the rotating direction of the rotating brush 9 clockwise by the anti-drive circuit 32a.

The drive circuit 32 is, as shown in FIG.
Triac 4 in series with commercial power supply 41 and electric blower 17
2 are connected in series, the resistor 43 and the photo-triac 44 between the gate G and T ₂ of the said triac 42 is configured by connecting in parallel, it is fired at a phase control method.
The firing input (LED) signal 44 a of the photo triac 44 is output from the control circuit 31.

FIG. 12 shows the ignition input signal and the electric blower 1.
7 shows the relationship between the input voltages and the ignition input signal (FIG. 1).
When 2-a) is turned on, the triac is ignited,
The voltage in the hatched portion (FIG. 12B) is input to the electric blower 17.

In this embodiment, the control circuit 31 fires a pulse on the triac 42, and determines the phase angle, that is, the input value of the electric blower 17, by timer means based on the voltage zero-cross signal of the commercial power supply. Needless to say.

FIG. 13 shows an embodiment of an inversion drive circuit 32a for inverting the electric motor 11 in response to a cleaning operation by a vibration signal from the vibration / separation detecting means 26 of the floor suction port 7.

The commercial power supply 41 is full-wave rectified by a diode bridge 45, and a drop resistor 46 and a zener diode 4
7. A constant voltage current for the base current of the transistors 49 and 50 is generated by the electrolytic capacitor 48.

When the signal 51a is output from the control circuit 31 to the LED of the photocoupler 51, the transistor of the photocoupler 51 is turned on, a current flows to the base of the transistor 53 via the resistor 52, and the transistor 49 is turned on. .

When the transistor 49 is turned on, the resistance 53
, A base current flows to the transistor 54, the transistor 54 is turned on, and the transistor 5
6 turns on. Thus, the full-wave rectified voltage causes a current to flow from the transistor 56 to the motor 11 from left to right and through the transistor 49.

The signal of the signal 57 is supplied to the LED of the photocoupler 57.
When a is input, a current flows from the right to the left of the motor 11 in reverse.

The forward / reverse drive of the electric motor 11 is performed as described above.
For example, the vibration detection signal for "carpet" (Fig. 14-
a) is input to the control circuit 31, and when the control circuit 31 outputs the LED to the photocoupler 51, the rotating brush 9 is rotated counterclockwise, and a vibration detection signal of "folding between plates" (FIG. 14)
-B) is input to the control circuit, and if the rotary brush 9 is rotated clockwise when the control circuit 31 outputs the LED to the photocoupler 57, the rotary brush 9 can be controlled according to the cleaning surface. Can be.

The display circuit a58 in FIG. 3 displays the operation contents set by the user and the operation state of the electric blower 17. The display means a59 may be any display means such as an LED or a neon lamp. Alternatively, it may be placed anywhere on the cleaner body 1.

The display circuit b60 displays the operating state of the electric motor 11 of the floor suction port 7, and the display means b
Reference numeral 61 may be any display means such as an LED or a neon lamp, and may be arranged anywhere on the operation unit 5 or the floor suction port 7.

Next, the operation of the electric vacuum cleaner according to the present invention will be described with reference to the rotary brush driving motor 11 and the electric blower 17 shown in FIG.
16 is a flowchart of the driving of the electric motor for driving the rotating brush and FIG.
A description will be given based on the flowchart of driving the electric blower.

First, a description will be given based on the flowchart of FIG. 15. The user starts the operation by setting the operation of the rotary brush 7 with the operation unit 5 (15-1).

First, in the state (15-2) in which the display during the stop of the rotating brush is released, since the floor surface is not detected, the cleaning surface is hardly damaged, and it is not dangerous to touch the rotating brush 7 with a hand. In the wiping rotation direction (15-3),
The rotating brush 7 is rotated at a low speed (15-4).

The setting of the initial state is to rotate the rotary brush 7 for the time being with emphasis on the intention set by the user to rotate the rotary brush 7. However, even if the initial setting does not rotate, there is no problem. There is no. In the case where the rotation is not performed in the initial setting as described above, (1) in the flowchart described later is used.
It is only necessary to start from 5-16).

After setting the initial state of (15-4), it is determined by the vibration / separation detecting means 26 (hereinafter referred to as detecting means) whether the floor suction port 7 has been lifted or turned over. (15-5) In the case of lifting, if lifting is continuously detected for a preset time or more (15-6), the process proceeds to the stop processing (15-1).
6).

If the lifting time is shorter than the set time, it is determined by the detecting means 26 whether there is vibration, that is, whether or not the floor suction port 7 is operated by the user (15-7).
If there is no vibration, and if there is no continuous vibration for a preset time (15-8), the process proceeds to the stop processing as in (15-6) (15-16).

If the vibration-free state is shorter than the set time or if there is vibration, the type of floor surface material is determined based on the detected vibration waveform (FIG. 8) (15-9).

Here, as described above, in the case of a carpet system, the rotating brush 9 is scraped out and the rotation direction (15-10)
To control the high-speed rotation (15-11). In the case of a folding system, low-speed rotation (15-13) is controlled in the wiping rotation direction (15-12). In the case of a flooring system, medium speed rotation (1) is performed in the wiping rotation direction (15-14).
5-15) Perform drive setting that is considered to be most suitable experimentally such as control.

In the present embodiment, there are three types of materials for the cleaning surfaces. However, the number of types is increased, or fuzzy inference is performed using the amplitude value, the absolute value, and the period of the vibration waveform as inputs. There are various methods such as a method of setting the rotation direction and the number of rotations in a fine manner, and the present invention is not limited to this embodiment.

As described above, after the rotation drive suitable for the material of the cleaning surface is set, the process goes to (15-5) again to cope with the case where the lifting of the floor suction port is stopped or the cleaning surface changes. I go around the main routine to do it.

Then, the above (15-6) and (15-
If a stop process is necessary in step 8), the motor 11 is turned off, that is, the rotating brush 9 is stopped (15-16), danger prevention and damage to the cleaning surface are prevented, and the display means a59 is turned on as a stop-in-progress display ( 15-17).

Note that the above-mentioned stopped-state display means a indicates that the user has forcibly stopped to lift the floor suction port 7 or to stop the operation despite the setting of rotating the rotary brush 9 by the user. Although it is displayed, contrary to this embodiment,
The display may be performed only during rotation, or the display of the presence or absence of rotation may be performed by changing the display color.

Further, if the state where the floor suction port 7 is lifted continues (15-18), the stopped state is maintained, and when the lifting of the floor suction port 7 is completed, the presence or absence of vibration is determined. (15-19), and if there is continuous vibration for more than a preset time (15-20), the display means a during stop is turned off (15-21), and the cleaning surface of (15-9) It returns to the main routine of material detection.

The condition that the no-lifting state and the continuous vibration for the set time or more are satisfied as the above-mentioned rotation return condition is that the user, especially the child, carelessly operates the detachment / attachment detecting means 15 by hand. This is because, in a situation in which the detecting means 26 is pressed or a short-time impact is applied to the detecting means 26 in a pressed state, the safety that the rotating brush 9 does not shift to rotation is emphasized.

Next, control of the electric blower 17 built in the cleaner body 1 will be described with reference to the flowchart of FIG. Also in this embodiment, the display means of the electric blower 17 is turned off (16-2) in consideration of the user's intention when the user starts driving (16-1), and the suction force is initially set to a weak setting. (16-3).

As will be described later, this weak setting may be a minimum input setting such that the rotation of the electric blower 17 can be determined by its rotation sound.

After the initial setting, the presence / absence of vibration is detected by the detecting means 26 (16-4). If the vibration is not continuously detected for a preset time (16-5), the electric blower 17 is stopped or stopped. Shift to minimum input setting (16-1
0).

If the vibration-free state is shorter than the set time or if there is vibration, the type of the cleaning surface material is determined based on the vibration waveform (FIG. 8) (16-6).

Here, unlike the rotary brush driving motor 11, the lifting of the floor suction port 7 is not adopted as a criterion because the user intentionally lifts the floor suction port 7 and lifts the curtain. This is because a situation in which the floor or the wall vibrates can be considered.

The material of the cleaning surface is judged (16-6), and if it is a carpet type, the suction force of the electric blower 17 is set to a high level (16-16).
-7) In the case of the folding system, the medium setting (16-8), and in the case of the flooring system, the weak setting (16-9). Control.

Also, here, the rotating brush driving motor 1
As with the control of No. 1, the number of steps of the control type includes various types, and is not limited to the present embodiment.

After the suction force optimal for the cleaning surface material has been set as described above, the process returns to (16-4) to cope with the stop of the floor suction port and the change of the cleaning surface material, and the main routine is started. Go around.

(16-5) If the vibration-free state continues for a set time or more. The electric blower 17 is stopped or the minimum input is set (16-10), and the energy saving effect or the noise reduction when the floor inlet 7 is not used are tested.

Here, the minimum input setting of the electric blower 17 is a weak setting such that the user can determine the rotation of the electric blower 17 by the rotation sound. There is virtually no problem even if is omitted, and a reduction in product cost can be expected.

When the electric blower 17 is turned off, the display means is turned on to notify the user that the electric blower 17 is stopped.

Next, the condition for returning from the rotation transition of the electric blower 17 or the minimum input setting to the normal variable input is as follows. When there is a vibration (16-12) and the vibration continues for a preset time or more, the condition (16-13) is reached. ), The display means b61 is turned off (16-14), and the process returns to the main routine of (16-6).

Here, the set time with the vibration does not involve the danger associated with the rotation transition of the rotating brush, that is, there is no danger that the rotating brush 9 will start suddenly and be caught in the rotating brush 9. Is set shorter than the set time with vibration.

[0089]

Since the present invention has the above-described structure, the following effects can be obtained. According to the first aspect, the rotary brush driving means of the floor suction port is stopped and decelerated by the vibration / separation detection means provided in the floor suction port, so that the floor suction port is raised above the cleaning surface. Can get your fingers caught even if you touch the rotating brush,
There is no danger that the rotating brush will unexpectedly rotate.

According to the second aspect, when the rotary brush is stopped and decelerated, the vacuum cleaner is in an unused state. Therefore, by stopping or decelerating the rotation of the electric blower, the electricity bill can be saved, that is, the energy saving effect can be obtained. In addition, the noise of the electric blower is reduced, which has a low noise effect.

According to the third aspect, the type and material of the cleaning surface are determined based on the vibration detection signal of the cleaning surface, and the rotating direction of the rotary brush is changed according to the type and material. And is effective in shortening the cleaning time.

[0092] During cleaning According to claim 4, without switching off the operating unit, when the user stops cleaning operation, stops the rotation of the rotary brush or the electric blower, the vacuum cleaner again becomes a stopped state When trying to clean the floor, if the floor suction port is moved continuously for a certain amount or more, the rotating brush and the electric blower will rotate again in the cleaning state, so that the cleaning state can be made immediately without turning on the switch every time. . Contract
According to claim 5, the sweep can be performed without switching off the operation unit.
When the removal work is stopped, the rotating brush or electric blower
The rotation speed is reduced, and the vacuum cleaner is decelerated, but is cleaned again
When trying to do so, keep the floor suction port
When you move it again, the rotating brush, the electric blower rotates in the cleaning state
Immediately, without turning on the switch each time.
Can be removed.

According to the sixth aspect , the vibration detecting means and the detachment detecting means are constituted as one detecting means.
The size of the detecting means can be reduced, and an inexpensive detecting means can be provided.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing the overall configuration of a vacuum cleaner according to the present invention.

FIG. 2 is a plan view of a main part of the floor suction port with an upper cover removed.

FIG. 3 is a control circuit block diagram of the electric vacuum cleaner.

FIG. 4 is an overall electric circuit diagram of the vacuum cleaner of the present invention based on the control block diagram of FIG. 3;

FIG. 5 is a sectional view of a main part of the vibration detecting means attached to the floor suction port.

FIGS. 6A and 6B are cross-sectional views of a main part of the separation / attachment detecting means attached to the floor suction port, in which FIG. 6A shows one embodiment and FIG. 6B shows another embodiment.

FIGS. 7A and 7B are cross-sectional views of main parts of the vibration / separation detecting means of the present invention, wherein FIG. 7A shows a state of the detecting means when the floor suction port is lifted, and FIG. It shows the state of the detecting means when it is placed on the floor.

FIG. 8 is a distribution diagram of output signals indicating the vibration of the cleaning surface by the vibration detecting means of the present invention. Here, (a) shows a carpet system, (b) shows a folding system, and (c) shows a flooring system cleaning surface.

FIG. 9 is a vibration detection circuit diagram for outputting a signal of the vibration detection means to a control circuit.

FIG. 10 is a sectional view of a main part of a rotary brush used for a floor suction port according to the present invention. FIG. 10 (a) shows a case where the rotary brush is used on a carpet, and FIG. Shows the case.

FIG. 11 is a drive circuit diagram used in the vacuum cleaner of the present invention.

FIG. 12 is an operation time chart showing a relationship between a firing input signal (a) to the drive circuit and an input voltage (b) of the electric blower based on the input signal.

FIG. 13 is an inversion drive circuit diagram used in the vacuum cleaner of the present invention.

FIG. 14 is an operation time chart showing a relationship between forward / reverse input signals (FIGS. A and b) to the inversion drive circuit and input voltages (FIG. C) to the electric motor based on the input signals.

FIG. 15 is a control flowchart of a rotary brush driving electric motor of the electric vacuum cleaner according to the present invention.

FIG. 16 is a control flowchart of the electric blower of the electric vacuum cleaner.

[Explanation of symbols]

 7 Floor suction port 9 Rotary brush 11 Rotary brush driving motor 13 Vibration detecting means 15 Separation detecting means 17 Electric blower 26 Vibration / separation detecting means 31 Control circuit 32 Drive circuit 32a Inversion drive circuit

Claims (6)

(57) [Claims] 1. A cleaning device comprising an electric blower built-in, a floor suction port having a rotary brush rotatably driven by rotary brush driving means , and the like. In a vacuum cleaner having a control circuit for controlling a driving means , when the floor suction port is operated on a cleaning surface, vibration detection means for detecting vibration due to unevenness of the cleaning surface or friction with the cleaning surface and the floor A detachment detecting means for detecting whether or not the suction port is separated from the cleaning surface, wherein the vibration detecting means does not continuously detect vibration for a preset time or the detachment detecting means is preset. If the landing has not been detected continuously for more than the set time, the rotation of the rotating brush by the rotating brush driving means is performed.
An electric vacuum cleaner characterized by stopping or decelerating rolling . During operation of wherein prior Machinery rolling brush drive means, by an output signal of at least one of the detection means of the detection means, said control circuit is adapted to stop or input control of the electric blower Claim 1 characterized by the following:
Vacuum cleaner as described. 3. The control circuit determines a cleaning surface based on an output signal of the vibration detected by the detection means ,
The vacuum cleaner according to claim 1 or 2, further comprising a reversing drive unit that controls a rotation direction of the rotary brush by the circuit brush drive unit based on a signal from the control circuit based on the cleaning surface . 4. The rotary brush drive according to claim 4, wherein
During the stop control of the moving means or the electric blower, if vibration is detected by the detection means continuously for a preset time or more, the rotary brush driving means performing stop control
Or vacuum cleaner according to any one of claims 1 to 3, characterized in that activating the electric blower. 5. The rotary brush drive according to claim 1 , wherein
During the deceleration control of the moving means or the electric blower,
Vibration is continuously detected by the detection means for more than the specified time.
Release the deceleration control if
The vacuum cleaner according to any one of claims 1 to 3 . 6. The apparatus according to claim 6, wherein said vibration detecting means and said detachment detecting means are integrated.
Vibration / separation detection means
6. The floor suction port according to claim 1, wherein the floor suction port is provided.
The vacuum cleaner according to any one of the above.