JP3006145B2 - 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 capable of displaying the amount of dust accumulated in a garbage bag.

[0002]

2. Description of the Related Art A conventional vacuum cleaner of this type will be described with reference to FIG. In the figure, a hose 33, an extension pipe 34 and a suction tool 3 are inserted into a suction port 32 of a main body 31.
5 is connected. A hand switch 36 is provided at the distal end of the hose 33, and the main switch 3 is operated by operating the hand switch 36.
1 is controlled.

When the garbage bag becomes full, or when the hose 33 or the extension pipe 34 is closed, a protector 45 provided on the main body 31 operates to prevent the electric blower 37 from burning, and a notification 46 provided on the protector 45 informs the user. Was.

[0004]

However, in the above-mentioned conventional vacuum cleaner, even if the dust bag is full of dust, the electric blower 37 is operated, and it is not known whether the dust bag is full without the protector 45 being operated. In addition, there was a problem that it could not be understood until it was full.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a vacuum cleaner capable of displaying the amount of dust in a garbage bag.

[0006]

In order to achieve the above object, a vacuum cleaner according to the present invention comprises a dust sensor provided in an air passage through which dust passes, and a pulse converter for converting an output of the dust sensor into a pulse signal. Unit, having a control means for integrating the signal from the pulse conversion unit and outputting to the display unit ,
The control means judges the size of the dust based on the output waveform of the dust sensor, corrects the count at the time of counting, and integrates the amount of dust, and a reset switch for resetting the integrated value.
Is provided on the garbage bag attachment part ,
A nonvolatile memory for storing an integrated value is provided, and the value of the nonvolatile memory is read out and output to a display unit when the power is turned on.

[0007]

In the above construction, the dust sensor outputs to the pulse converter in accordance with the amount of dust, integrates the number of pulses from the pulse converter, and outputs the number of pulses to the display in accordance with the integrated value. displays, the control means determines the size of the dust from the output waveform of the dust sensor, performs the integration of the amount of dust is corrected to time of counting, addition, totalized value by pressing the reset switch is erased, further Since the storage unit is configured using a nonvolatile memory, the value of the nonvolatile memory is read out and output to the display unit when the power is turned on.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The same parts as those in the conventional example are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in the figure, a light emitting diode 1 is provided in a part of an air flow path 12 of a hose 33, and a light receiving unit 2 is provided opposite to the light emitting diode 1, and dust 13 passing through the air flow path 12 is used. A change in the amount of light is detected. The light emitting diode 1 and the light receiving unit 2 constitute a dust sensor 3. FIG. 1 shows a circuit block diagram. The signal of the light receiving unit 2 is amplified by the amplifying unit 4, the waveform is shaped by the pulse converting unit 5, and input to the control unit 6. The control means 6 has a counting means 7, a pulse width time counting means 8, and a timer section 20.

The output side of the control means 6 is connected to the display section 21, the storage section 22 and the respective input sides of the phase control circuit 11, and controls the electric blower 37. Note that a non-volatile memory or the like that does not lose its contents even when the power is turned off is used for the storage unit 22.

The operation of the above arrangement will be described with reference to FIG. 3. When the dust 13 is detected, the counting means 7 counts the number of the dust 13 by an interrupt function. Then, the data is added to the storage unit 22 in step 3 every predetermined period in step 2, and when the predetermined number is reached in step 4, it is recognized that the garbage bag 23 is full of garbage. Then, a display to that effect is displayed on the display unit 21 in step 5. In addition, a warning can be displayed that the garbage bag 23 is almost full when the number of the garbage bags 23 approaches a predetermined number.

As shown in FIG. 4, since the output pulse width of the dust sensor 3 and the size of the dust 13 change, the width is timed by the pulse width timing means 8 to determine the size of the dust 13. By performing correction when counting by the counting means 7, the integrated amount of the dust 13 can be accurately stored.

Further, as shown in FIG. 5, a reset switch 25 is provided on the mounting portion 24 of the garbage bag 23 and connected to the control means 6 as shown in FIG.
Garbage bag 23
Presses the reset switch 25 to erase the contents of the storage unit 22. Therefore, there is an advantage that the contents of the storage unit 22 are automatically reset when the garbage bag 23 is replaced, thereby saving time and effort.

Further, since the state of the refuse in the refuse bag 23 is stored in the storage section 22, even if the power is turned off at the end of cleaning, the information up to that point remains. By judging the information on the refuse before the operation and notifying the information on the display means 21, the state of the refuse amount can be grasped in advance, and the preparation of the copy of the refuse bag 23 can be performed in advance.

[0015]

As apparent from the above description of the embodiment,
According to the first aspect of the present invention , a dust sensor provided in an air passage through which dust passes, a pulse converter for converting an output of the dust sensor into a pulse signal, and a signal from the pulse converter are integrated. Equipped with control means for outputting to the display unit
Therefore, the display according to the result of the accumulation of the amount of dust can be performed , and the cleaning operation can be performed efficiently. Also,
The control means determines the size of the dust from the output waveform of the dust sensor.
Judgment and correction at the time of counting and accumulation of the amount of dust
Accumulation of the amount of dust can be performed accurately. Claims
In the invention described in Item 2, the dust provided in the air passage through which the dust passes
Dust sensor and the output of this dust sensor as pulse signal
A pulse converter for converting, and a signal from the pulse converter
Control means for integrating and outputting the result to the display unit.
Can be displayed in accordance with the result of integrating the amount of dust,
Cleaning work can be performed efficiently. Also, in the garbage bag
Since the accumulated value can be automatically reset by replacement,
This saves time and effort for resetting the integrated value when replacing bags.
There is a point. Further, according to the third aspect of the present invention, dust can pass through.
A dust sensor installed in the air passage
A pulse converter for converting the output of the
Integrates the signal from the pulse converter and outputs it to the display
Since control means is provided ,
Display can be performed, and cleaning work can be performed efficiently
it can. When the power is turned on, the value of the nonvolatile memory
Is read out and output to the display unit.
The state of the amount of garbage can be grasped and the usability is good.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram of a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a mounting portion of a dust sensor of the vacuum cleaner.

FIG. 3 is a flowchart showing the operation of the vacuum cleaner.

FIG. 4 is a diagram showing output pulses of a pulse conversion unit of the vacuum cleaner.

FIG. 5 is a diagram showing a state where a garbage bag of the vacuum cleaner is attached.

FIG. 6 is an external perspective view of a conventional vacuum cleaner.

[Explanation of symbols]

Reference Signs List 3 dust sensor 5 pulse conversion unit 6 control means 21 display unit 22 storage unit (non-volatile memory)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-135325 (JP, A) JP-A-60-192740 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/19 A47L 9/28

Claims (3)

(57) [Claims] 1. A dust sensor provided in an air passage through which dust passes, a pulse converter for converting an output of the dust sensor into a pulse signal, and a signal from the pulse converter integrated and output to a display unit. Control means , said control means
Determines the size of dust from the output waveform of the dust sensor
A vacuum cleaner that corrects at the time of counting and accumulates the amount of dust . 2. A dust chamber provided in an air passage through which dust passes.
And the output of this dust sensor into a pulse signal
And a signal from the pulse converter.
Control means for calculating and outputting the integrated value to the display unit.
Set the reset switch to reset on the
Kettle vacuum cleaner. 3. A dust cell provided in an air passage through which dust passes.
And the output of this dust sensor into a pulse signal
And a signal from the pulse converter.
Control means for calculating and outputting the result to the display unit, and storing the integrated value
A non-volatile memory that operates when the power is turned on.
To read out the value of the functional memory and output it to the display unit
Composed vacuum cleaner.