JP2949987B2 - 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 which detects the amount of dust on a floor and displays information on the dust on the floor on a floor nozzle.

[0002]

2. Description of the Related Art In recent years, vacuum cleaners which are equipped with a dust sensor, automatically set the suction force of a fan motor according to the amount of dust on the floor surface, and display the amount of dust at a hand operating portion at the end of a hose are mainly used. It has become.

Conventionally, this type of vacuum cleaner generally has a configuration as shown in FIGS. Hereinafter, the configuration will be described.

As shown in the figure, a cleaner body (hereinafter referred to as a body) 1 has a built-in fan motor 2, and an electric floor nozzle 7 having a hose 4, an extension pipe 5 and a rotating brush 6 in a suction port 3. Are connected. A dust sensor display 8 is provided at the tip of the hose 4, and the dust sensor display 8 displays the amount of dust according to the amount of dust detected by the dust sensor 9 as shown in FIG. Was. Also,
The dust sensor 9 has a light-emitting element 12 and a light-receiving element 13 opposed to each other via a transparent holder 11 in an air passage 10 at the tip of the hoe. The light-emitting element 12 and the light-receiving element 13 include a resistor 1
It is biased from the DC power supply via 4 and 15. The output of the light receiving element 13 is configured such that only an amount of change in the amount of light is amplified by an amplifier 17 via a capacitor 16, and compared with a reference potential 19 by a comparator 18 to perform pulse conversion. The reference potential 20 is for determining an operating point of the amplifier 17.

In the above configuration, when dust passes between the light emitting element 12 and the light receiving element 13 of the dust sensor 9, the amount of light to the light receiving element 13 decreases, and a pulse signal is generated from the output of the comparator 18. When the amount of dust is large, the number of pulses per unit time increases, and when the amount of dust is small, the number of pulses per unit time decreases. The dust sensor display unit 8 operates to display the number of rotations and the amount of dust of the fan motor 2 in accordance with the amount of dust detected in this way.

[0006]

In such a conventional vacuum cleaner, since the display unit 8 for the amount of dust is the handle at the end of the hose, it is determined whether dust is present or not by looking at the hand each time during cleaning. And there was a problem in use.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to transmit garbage information detected by a garbage sensor to a floor nozzle and display the garbage information on the floor nozzle side, thereby greatly improving usability. .

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a dust sensor for detecting dust on the floor surface and a dust sensor provided at a portion other than the floor nozzle, and a phase based on the amount of dust by the output of the dust sensor. Control means for outputting information, phase information detection means for detecting the phase information of the control means via a signal line connected to a commercial power supply, provided in the floor nozzle,
Display means for displaying dust information on the floor surface, wherein the phase information detecting means causes the display drive means provided on the floor nozzle to display the amount of dust on the floor surface by a plurality of display elements. This is defined as a first problem solving means.

Further, a second solution to the problem is to have one signal line in addition to the two power lines of the electric motor provided on the floor nozzle.

[0010]

According to the present invention, by displaying dust information on the floor nozzles by means of the above-mentioned respective means for solving the problems, it is possible to efficiently clean the floor while visually checking the amount of dust on the floor surface, thereby improving usability. Further, even if dust adheres to the terminal of the signal line and the impedance fluctuates, information can be reliably transmitted to the nozzle side, and highly reliable display of the garbage information can be performed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, in describing embodiments of the present invention,
First, a basic configuration will be described with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 1, the dust sensor 9 detects dust on the floor, and outputs its output to a microcomputer (control means) 21.
Determines the number of revolutions of a fan motor (not shown) based on the output of the dust sensor 9, and outputs a control signal therefor. At the same time, dust information is output to photothyristors 24 and 25 connected in anti-parallel via resistors 22 and 23. Display means 26
The garbage information is displayed on the floor nozzle 7, two display elements 27 and 28 are connected in anti-parallel, and photothyristors 24 and 25 are connected in series via a signal line 29 and a resistor 30. It is connected to a commercial power supply via a resistor 31, and is turned on by two display elements 27 and 28 in synchronization with the positive and negative polarities of the commercial power supply according to dust information of the microcomputer 21. The bidirectional thyristor 32 is connected in series to a motor 35 in the floor nozzle 7 via power lines 33 and 34 provided in the extension pipe 5 and is connected to a commercial power supply.
A series circuit of a photothyristor 36 and a resistor 37 is connected between the gate of the bidirectional thyristor 32 and the terminal T2. The microcomputer 21 includes a tact switch 38
When the key is pressed, a current flows from the DC power supply to the light emitting diode side of the photothyristor 36 via the resistor 39.

The operation of the above configuration will be described. When the tact switch 38 is pressed, the photo thyristor 36 is turned on, a current flows through the gate of the bidirectional thyristor 32, and the bidirectional thyristor 32 is turned on to start the electric motor 35. And
The rotating brush of the floor nozzle 7 is rotated. The output of the dust sensor 9 is input to the microcomputer 21 to generate a control signal to automatically control the suction force of the fan motor based on the output of the dust sensor 9. The microcomputer 21 turns on the light emitting diode of the photo thyristor 24 via the resistor 22, and the resistor 31 and the photo thyristor 2
4. The display element 27 is turned on via the signal line 29 and the resistor 30. On the other hand, when there is dust, the photo thyristor 25
Is turned on by the microcomputer 21 via the resistor 23, and the display element 28 is turned on from the commercial power supply via the resistor 31, the photothyristor 25, the signal line 29, and the resistor 30.

Thus, according to the above configuration, the power line 3
The floor nozzle 7 can be obtained by simply adding one signal line 29 to
Garbage information can be displayed.

Next, an embodiment of the present invention will be described with reference to FIG. The components having the same configuration as the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG.
Numeral 0 denotes the output of the dust sensor 9, which generates a control signal for the fan motor, and outputs some information on the amount of dust on the floor surface to phase information T1 to T4 shown in FIGS. The data is converted to T4 and output to the photothyristor 42 via the resistor 41. The phase information detecting means 43 is connected to the photothyristor 42 via the signal line 29, decodes the phase information from the microcomputer 40, and comprises a plurality of display elements 46 to which constitute the display means 25 via the display driving means 44. 49 is turned on. The resistor 50 is a current limiting resistor.

The operation of the above configuration will be described. When the tact switch 38 is pressed, the photothyristor 36 is turned on, a current flows through the gate of the bidirectional thyristor 32, and the bidirectional thyristor 32 is turned on to start the motor 35. And
The rotating brush of the floor nozzle 7 is rotated. The output of the dust sensor 9 is input to the microcomputer 40, generates a control signal, automatically controls the suction force of the fan motor by the output of the dust sensor 9, and when there is no dust on the floor surface. Then, the light emitting diode of the photothyristor 42 is turned on via the resistor 41 at the phase T1 as shown in FIG.
2. A signal is transmitted to the phase information detecting means 43 via the signal line 29. The phase information detecting means 43 decodes the phase information from the microcomputer 40 and outputs the decoded information to the display driving means 44.
The display element 46 is turned on via the. When there is dust on the floor, the microcomputer 40 converts the information on the amount of dust into phase information T2 to T4 as shown in FIGS. 41 to a photo thyristor 42 via a phase information detecting means 43.
Decodes the phase information from the microcomputer 40,
The display elements 47 to 49 are turned on via the display driving means 44.

As described above, according to the present embodiment, the amount of waste can be displayed stepwise by converting the amount of waste into phase information and transmitting it.

[0019]

As is apparent from the above embodiments, according to the present invention, a garbage sensor for detecting refuse on a floor, control means for outputting phase information based on the amount of refuse by an output of the refuse sensor, Phase information detecting means for detecting phase information of the control means via a signal line connected to a commercial power supply, and display means provided on the floor nozzle for displaying dust information on the floor surface, the phase information detecting means Since a small amount of dust on the floor is displayed by a plurality of display elements via the display driving means, dust information can be displayed on the floor nozzle side, and the dust information on the floor is easy to understand and efficient. Cleaning can be done. In addition, since the amount of dust on the floor can be displayed on a plurality of display elements, the amount of dust on the floor can be controlled and the efficiency of cleaning can be greatly improved. Further, even if dust adheres to the terminal of the signal line and the impedance fluctuates, information can be reliably transmitted to the nozzle side, and highly reliable display of the garbage information can be performed.

Further, since one signal line is provided separately from the two electric power lines of the electric motor provided on the floor nozzle, the display means of the floor nozzle can be turned on even when the electric motor of the floor nozzle is stopped. In addition, the dust information display at hand can be provided on the floor nozzle with a minimum number of signal lines.

[Brief description of the drawings]

FIG. 1 is a block diagram of a main part of a vacuum cleaner.

FIG. 2 is a perspective view of a floor nozzle of the vacuum cleaner.

FIG. 3 is a block diagram of a main part of the vacuum cleaner according to one embodiment of the present invention.

FIG. 4 (a) to (d) are diagrams showing garbage information of the vacuum cleaner.

FIG. 5 is a perspective view of a conventional vacuum cleaner.

6A and 6B are configuration diagrams of a dust sensor of the vacuum cleaner.

[Explanation of symbols]

 7 Floor nozzle 9 Dust sensor 21 Microcomputer (control means) 26 Display means 27 Display element 28 Display element

(72) Inventor Mitsuhide Sugibayashi 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Akihiro Kitagawa 1006 Okadoma Kadoma Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Norihito Mochida 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-1-314541 (JP, A) JP-A-3-184523 (JP, A) JP 1-58226 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47L 9/28

Claims (2)

(57) [Claims] A dust sensor for detecting a 1. A floor dust, provided at a site other than the floor nozzle, and a control means for outputting the phase information that corresponds to some dust by the output of the dust sensor, said control means Phase information detecting means for detecting the phase information via a signal line connected to a commercial power supply, and a display means provided on the floor nozzle and displaying dust information on the floor surface, the phase information detecting means, A vacuum cleaner in which the amount of dust on the floor surface is displayed by a plurality of display elements via a display driving means provided on a floor nozzle. 2. The vacuum cleaner according to claim 1, further comprising one signal line separately from the two power lines of the electric motor provided on the floor nozzle.