JP2000271053A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight and handleable vacuum cleaner. SOLUTION: The vacuum cleaner is provided with a nozzle 105 having a brush to be driven by a motor 10, an electric blower 1 for generating suction force, a vacuum cleaner body 101 incorporating this electric blower 1, a hose 102 one end side of which is connected to the body 101 and the other end side of which has a manual operation part 102a, a conductor 103 disposed in the hose 102 in order to supply the nozzle 105 with the power of the side of the body 101 via the part 102a, an operation means 2 provided at the part 102a to generate signal voltage from the power of the conductor 103 and a control means 8 provided at the body 101 to input signal voltage from the means 2. The means 8 can precisely detects a signal from the means 2 through a single signal wire by correcting signal voltage inputted at the time of driving and at the time of stopping the motor 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner for transmitting a control signal from a hand operating portion of a hose to a main body of the electric vacuum cleaner.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS.

[0003] The overall configuration of the vacuum cleaner is as shown in FIG.
A nozzle 105 for sucking dust, an extension tube 104 for guiding the dust sucked by the nozzle 105 to the hose 102 side, and a built-in electric blower 1 for generating a suction force, and a dust collecting chamber 101a for collecting dust from the hose 102 Operating means 10 for setting operation / stop of the electric blower 1 and the like
2b is provided on the upper surface of the hand operation unit 102a attached to the end of the hose 102 on the extension pipe 104 side.

In this configuration, as shown in FIG.
The operation unit 102b, the second control unit 205, the second AC /
A DC converter 206 is provided. This second AC
The / DC converter 206 supplies power to the second control means 205 and the operation means 102b. Operation means 10
2b is composed of a plurality of switches so that the user can set the operation selection of the electric blower 1.
The main body 101 incorporates an AC / DC converter 208, a control means 209, and the electric blower 1 described above. AC /
The DC converter 208 supplies power to the control unit 209, and the control unit 209 controls the operation of the electric blower 1 and the second control unit 205 in the hose 102.
An operation / stop signal and the like of the electric blower 1 are input and driven. Further, the nozzle 105 has a built-in motor 202 for driving the rotating brush, and the operation / stop selection can be made by the operation means 102b in the hand operation unit 102a. Reference numeral 207 denotes a bidirectional thyristor that controls energization of the motor 202, and 210 denotes a bidirectional thyristor that controls energization of the electric blower 1.

In this configuration, four conductors are required between the hand operation unit 102a and the main body 101 to supply signals and power. In other words, the second control means 205 and the control means 209 need two signal lines, and supply power to the motor 202 and the second AC / DC converter 2
Two power supply lines were needed to power the 06. These four wires 102a must be embedded in the hose 102. Therefore, the hose 10
2 became heavy, and the hose 102 could not be bent smoothly, causing a deterioration in the cleaning workability. The second control means 20 is provided in the hand operation unit 102a.
5. The AC / DC converter 206 was accommodated, and the weight of the hand operation unit 102a was heavy.

[0006]

In the structure of the conventional vacuum cleaner, there is a second control means 205 (generally constituted by a microcomputer) for electrically controlling the hand operation section 102a. , Miniaturization was restricted. Further, two signal lines for control are required in the main body 101, so that the number of signal lines in the hose 102 cannot be reduced, and it is difficult to reduce the weight.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a vacuum cleaner in which the size of the hose and the operation unit at hand can be reduced and the usability is improved.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a nozzle having a brush driven by a motor, an electric blower for generating a suction force, and a vacuum cleaner body incorporating the electric blower. A hose having one end connected to the main body of the vacuum cleaner and having a hand-operated portion on the other end, and supplying the electric power of the main body of the vacuum cleaner to the nozzle via the hand-operated portion. A conductor provided, operating means provided on the hand operation unit for generating a signal voltage from the power of the conductor, and control means provided on the vacuum cleaner main body side for inputting a signal voltage from the operating means. However, the control means is a means for solving the problem of changing the judgment of the signal voltage input when the motor is driven and when the motor is stopped, and realizes a small and lightweight hand-held operation unit with a simple configuration. hose To realize the reduction of the number of signal lines.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The invention described in claim 1 of the present invention is as follows.
A nozzle having a brush driven by a motor, an electric blower for generating a suction force, a vacuum cleaner main body incorporating the electric blower, one end connected to the vacuum cleaner main body, and a hand operation unit connected to the other end And a conductor provided on the hose for supplying electric power of the vacuum cleaner main body side to the nozzle via the hand operation unit, and a signal voltage provided from the power of the conductor provided on the hand operation unit. Operating means for generating a signal voltage, and a control means provided on the vacuum cleaner main body side for inputting a signal voltage from the operating means, wherein the control means inputs a signal voltage according to when the motor is driven and when the motor is stopped. It is a vacuum cleaner that changes the judgment.

According to a second aspect of the present invention, there is provided a nozzle having a brush driven by a motor, an electric blower for generating a suction force, a vacuum cleaner body incorporating the electric blower, and a vacuum cleaner body. A hose having one end connected to the other end thereof and having a hand operation section on the other end side; a lead wire provided on the hose for supplying commercial power from the vacuum cleaner main body side to the nozzle via the hand operation section; Zero volt detection means for detecting the timing of zero volts of the power supply, operation means provided in the hand operation unit, for generating a signal voltage from the electric power of the conducting wire, and a signal from the operation means provided on the vacuum cleaner main body side, Control means for performing control in accordance with the voltage, wherein the control means inputs a signal voltage from the operation means at a timing delayed by a predetermined time from the timing of zero volts It is a gas cleaner.

The invention according to claim 3 of the present invention is the electric vacuum cleaner according to claim 2, wherein the control means stops the motor for a certain period from the timing of zero volt during the driving period of the motor.

According to a fourth aspect of the present invention, there is provided a nozzle having a brush driven by a motor, an electric blower for generating a suction force, a main body of a vacuum cleaner incorporating the electric blower, and a main body of the vacuum cleaner. A hose having a hand-operated part on the other end side, a lead wire provided on the hose for supplying electric power on the vacuum cleaner main body side to the nozzle via the hand-operated part, and the motor Current detecting means for detecting a current flowing to the operating section, operating means for providing a signal voltage from the electric power of the conducting wire, provided on the hand operating section, and provided on the main body of the vacuum cleaner according to the signal voltage from the operating means. The control means is a vacuum cleaner that corrects a signal voltage according to an output of the current detection means.

According to a fifth aspect of the present invention, there is provided the electric vacuum cleaner according to the fourth aspect, wherein the control means performs an abnormality display or an abnormality notification when the output of the current detection means is an abnormal value.

[0014]

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIGS.

First, a general description of the entire vacuum cleaner will be given.
Reference numeral 101 denotes a vacuum cleaner main body (hereinafter, referred to as a main body), in which a dust collection chamber 101a is disposed in the front of the main body 101, and the electric blower 1 is disposed in the rear. 102 is a hose, one end of which is the body 10
1 is connected to the dust collecting chamber 101a, and the
02a, and a conducting wire 103 for supplying power of the main body 1 to the nozzle 105 is provided. An extension tube 104 has one end connected to the hand operation unit 102a and the other end connected to the nozzle 105. Thus, the dust sucked from the nozzle 105 is guided to the dust collecting chamber 101a in the main body 101 via the extension pipe 104 and the hose 102. This suction force is generated by the electric blower 1.

As shown in FIG. 4, the hand operation unit 102a
A "carpet" operation unit 102c operated when performing carpet cleaning, a "floor / tatami" operation unit 102d operated when cleaning floors and tatami, and a vacuum cleaner main body 101
"OFF" operation unit 102 operated when stopping the operation of
e is provided. The operation of these operation units is performed by the operation unit 10 at hand.
The setting is performed by the operation setting unit 102b on the upper surface of 2a. Pressing the carpet operating unit 102c once sets an "auto" mode for automatically setting the air volume of the electric blower 1 in accordance with the amount of dust,
The "automatic" display section 102f lights up. When the button is pressed once, the “high power” mode in which the air volume of the electric blower 1 is set to “strong” is set, and the “high power” display section 102g is turned on.
Pressing the button once more sets the "quiet" mode in which the air volume of the electric blower 1 is set to "weak", the "quiet" display unit 102h lights up, and pressing the button once returns to the initial "automatic" mode. Repeat the settings.

In the "floor / tatami" operation unit 102d, the air volume of the electric blower 1 is set in the same manner as in the "carpet" operation unit 102c, except for the "carpet".
When the operation unit 102c is operated, the motor 10 for driving the rotating brush in the nozzle 105 is also energized, and the electric blower 1
In addition, a rotating brush (not shown) also operates.
The rotating brush is designed to rotate in any of "auto", "high power" and "quiet" modes.

However, in recent years, the “floor / folding” operation unit 1
In some cases, even when 02d is pressed, the motor 10 for driving the rotating brush in the nozzle 105 is also driven.

Next, the circuit configuration will be described mainly with reference to FIG.

Reference numeral 3 denotes an AC / DC converter, which outputs a predetermined low voltage (for example, DC 24 V) when a commercial power supply (for example, AC 100 V) is inputted. The circuit configuration example is a rectifier diode as shown in FIG. 3a performs full-wave rectification, smoothes with an electrolytic capacitor 3b (converts to DC),
100 by converter 3c which is one-chip IC
The voltage of V is lowered and the output is returned to the electrolytic capacitor 3d.
To obtain 24 VDC. The converter 3
Some types of ICs may not have the electrolytic capacitor 3b on the input side of c, and a transformer may be used instead of the converter 3c.

The AC / DC converter 3 is connected to a commercial power supply. Reference numeral 2 denotes an operation means, which is composed of a plurality of resistors and switches as shown in FIG. 1, and corresponds to each of the operation units 102c, 102d, and 102e described above.
It is located at the hand operation unit 102a of the hose 102. Reference numeral 8 denotes a control unit that determines an output of the operation unit 2 and issues a drive command for the electric blower 1 and the motor 10.

Next, the operation will be described.

The structure of the operating means 2 will be described in more detail. One power supply line (one end of 100 VAC, connected to the motor A in FIG.
Is a predetermined voltage (for example, DC24
A point is connected to one end of a switch between the resistors, and the other end of the power supply line (100 V AC) is connected to the motor 1.
0 (the line B in FIG. 1). That is,
Power lines A and B are connected to both ends of the motor 10,
A line in which a potential difference of 100 V AC is generated with respect to the A line is a B line, and a line in which 24 V DC is generated is a C line.

Now, resistors A and B, switches (SW) A and B
When the switch is not pressed, the signal sent from the operating means 2 to the control means 8 is a voltage divided by the resistors A, B, C, and Z ((resistor Z). A + resistance B + resistance C) / (resistance A + resistance B + resistance C + resistance Z)) × voltage value (24 VDC). Here, if the resistances A, B, C, and Z are 10K ohms, the signal from the operation means 2 is 18V.

When the switch B is pressed, the resistance C
(10K ohms) and the resistance Z (10K ohms), the output of the operating means 2 is DC12V.

However, the power supply line to the motor 10 passes through the hose 102, and there is a resistance of several ohms up to the operation means 2 configured using this power supply line. In the configuration of FIG. 1, if the operation of the motor 10 is not performed by the control means 8, it is possible to determine which switch is being pressed by the above-described calculation. The voltage between the current flowing through the motor 10 and the resistance between the hoses 102 is generated by the resistance between the hoses 102. (Hose 1
02 is about 4.4 ohms and the current of the motor 10 is 0.4 A, which is 1.76 V DC). The value obtained by adding this voltage is sent from the operation means 2 to the control means 8. Therefore, when the motor 10 is operated, the control means 8 corrects the output from the operation means 2 to determine which switch has been pressed, as shown in FIG.

That is, in the example shown above, when the switch 10 is pressed when the motor 10 is not turned on, an output of 12 V DC is output. However, when the motor 10 is on, 13.76 V DC is output from the operation means 2. Therefore, in this case, 1.76 V DC is corrected to 12 V, and the control means 8 determines that the switch B is pressed.

By performing this operation, the ON state of the switch is detected by one conductor 103 regardless of the ON / OFF state of the motor 10 by the operating means 2 realized with a simple configuration of a plurality of resistors and switches. Can,
The hand operation unit 102a and the hose 1 that the user grips every time cleaning is performed.
02 can be lightened, the usability can be improved, and it can be used easily.

The control means 8 detects the state in which each switch is pressed, and controls the energization of the electric blower 1 in the mode described above.
Performs phase control. The motor 10 of the nozzle 105 is turned on / off by the bidirectional thyristor 207 to control the operation / stop of the rotating brush in the nozzle 105.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Numeral 11 denotes a zero volt detecting means for detecting the timing of zero volts of the commercial power supply. As mentioned above, the control means 8 inputs the signal of the operating means 2 and receives the signal of the operating means 2 so that the motor 10 built in the nozzle 105 is operated. , The start and stop of the operation of the electric blower 1 and the like are controlled. Reference numeral 13 denotes a timer for measuring a predetermined time by a signal from the zero volt detecting means 11, and the control means 8 also inputs the timer 13.

Next, the operation will be described.

The waveform of the current flowing through the motor 10 will be described with reference to FIG. 6A is a waveform of a voltage applied to the motor 10, FIG. 6B is a waveform of a current flowing through the motor 10 in response to the voltage of FIG. 6A, and FIG. 6C is a zero volt detection signal of the zero volt detecting means 11. is there.

The motor 10 is turned on by the control means 8.
Then, a voltage is applied to both ends of the motor 10 (FIG. 6A). As a result, the motor 10 starts operating. Here, the zero volt detecting means 11 detects the point (a, b, c, d) at which the voltage waveform becomes zero volt.
Point). If the current flowing through the motor 10 is near zero at this voltage near zero volts, the operating means 2
When the signal from the motor 10 is received at this timing, the output signal of the operating means 2 due to the voltage generated by the resistance during the passage through the hose 102 can be eliminated. (B), which deviates from zero volts. This is because the motor 10 has not only a pure resistance but also a reactance component, so that the voltage waveform and the current waveform always have a time lag.
When inputting the operation means 2, it is ideal that the current flowing through the motor 10 is input at a time point of zero. Therefore, the timer 13 which has received the detection signal of the zero volt detection means 11 performs a predetermined time ( The time (ta time in FIG. 6D) is measured. When the time measurement by the timer 13 ends,
The timer 13 outputs a timing end signal to the control means 8. At the same time, the timer 13 resets the time,
It waits for the next signal from the zero volt detecting means 11. The control means 8 having received the timing end signal obtains the output of the operation means 2 and determines which switch has been pressed.

By this operation, the input of the operating means 2 can be made at a point in time when no current is flowing to the motor 10, and the ON / OFF determination of the switch can be made more reliably, and the light weight of the hand operating section 102a and the hose 102 can be reduced. It is possible to improve the usability and use it without a sense of incongruity.

(Embodiment 3) A third embodiment of the present invention will be described with reference to FIGS. The same components as those in the first and second embodiments are denoted by the same reference numerals, and description thereof will be omitted.

Numeral 11 is a zero volt detecting means for detecting the timing of zero volt of the commercial power supply, 19 is a second timer for measuring a predetermined time by a signal of the zero volt detecting means 11, and control means 8 is a second timer for the second timer 19. Output and input of the output of the operation means 2 are also performed.

Next, the operation will be described.

The waveform of the voltage applied to the motor 10 will be described with reference to FIG. FIG. 8A shows the motor 10.
(B) is a waveform of a current flowing through the motor 10 receiving the voltage (A), and (C) is a detection signal of the zero volt detection means 11.

The motor 10 is turned on by the control means 8.
Regarding the timing, here, the zero volt detecting means 11 detects points (a, b, c, d) at which the voltage waveform becomes zero volt. The second timer 19 that has received the detection signal of the zero volt detection means 11 measures a predetermined time (tb time of FIG. 8A, for example, 3 mS). The second timer 19 outputs to the control means 8 that the current time is being measured, and the control means 8 having received the signal first applies the voltage of the motor 10 during the time measurement of the second timer 19. Instead, the input of the operation means 2 is performed. When a signal from the operating means 2 is received near the zero volt of the voltage waveform ((A) in FIG. 8) and the current flowing through the motor 10 is near zero, the voltage generated by the resistance during the passage through the hose 102 8 can eliminate the variation of the output signal of the operation means 2 due to the
When the motor 10 is not turned on, as shown in c, no current flows through the motor 10 to that extent. Therefore, the input of the operation means 2 is performed during this period to determine which switch has been pressed. After that, when the second timer 19 finishes measuring the predetermined time, the end of the time measurement is output, and the control means 8 receiving the output turns on the motor 10. The second timer 19 that has output the signal indicating the end of the clock resets the clock, and waits for the output of the zero volt detecting means 11 again.

Here, the timer 13 described in the second embodiment is also added to FIGS. 7 and 8, and the read timing of the control means 8 can be delayed by ta time by this timer 13, so that the motor 10 can be more reliably operated. Detection can be performed at the zero point of the current.

By this operation, it is possible to create a state where no current is flowing through the motor 10, and
At that time, the input of the operation means 2 can be performed, and the ON / OFF of the switch can be determined with higher accuracy and accuracy, so that the weight and size can be reduced, which improves the usability.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, the above first to first
The same components as those of the third embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 14 denotes current detection means for detecting a current flowing through the motor 10, reference numeral 16 denotes storage means for storing a predetermined value, and the control means 8 controls the current detection means 14,
Input to the storage means 16 is also performed.

Next, the operation will be described.

When the input to the operation means 2 is performed, the output is prevented from being different even if the same switch is pressed in the operation means 2 by the current flowing through the motor 10. In the configuration, since the voltage generated in the path of the hose 102 differs depending on the current flowing through the motor 10, the current of the motor 10 is detected by the current detection unit 14. That is, when the motor 10 is turned on by the control means 8, the current detection means 14 constantly detects the current flowing through the motor 10 and outputs the current to the control means 8. Upon receiving this signal, the control means 8
A correction value (FIG. 10) corresponding to the corresponding current value is input from the storage means 16, and the input value from the operation means 2 is corrected.

For example, if the operating means 2 has resistors A, B,
C, switches (SW) A and B, and a resistor Z. If the switch is not pressed, the operating means 2
Is transmitted to the control means 8 from the divided voltage of the resistor A, the resistor B, the resistor C, and the resistor Z ((resistor A + resistor B + resistor C) / (resistor A + resistor B + resistor C + resistor Z)) × voltage value ( DC24V). Here, the resistances A, B, C, and Z are 1
If it is 0K ohm, the signal from the operation means 2 is 18V
Becomes Unnecessary voltage is generated due to the resistance between the hoses 102 (about 4.4 ohms) and the current flowing through the motor 10. Therefore, when a current of 0.1 A flows through the motor 10, 0.44V DC is added. 18.44 V DC is the output of the operation means 2.

Upon receipt of this, the control means 8 inputs a correction value corresponding to a current value of 0.1 A from the storage means 16 and corrects the output (18.44 V DC) from the operation means 2. (DC18.44-DC0.44 = DC18V)

Here, the motor 10 is built in the nozzle 105, and the load state to be borne depends on the state of the floor surface and the like, and a constant current rarely flows. In this state, in order to accurately input the output from the operation means 2, the current flowing through the motor 10 is constantly detected by the current detection means 14.
Is sent to the control means 8 while detecting the
It is determined which switch has been pressed while correcting the output of.

Thus, regardless of the surrounding environment such as the floor surface or the specification environment, the input of the operation means 2 can be accurately performed, and the ON / OFF determination of the switch can be accurately performed. The handling unit 102a and the hose 10 to be handled
2 can be reduced in weight and can be used without discomfort.

(Embodiment 5) Next, a fifth embodiment of the present invention will be described with reference to FIG.

The same components as those in the first to fourth embodiments are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 17 denotes display means for performing display, and control means 8
Are inputs of the current detection means 14 and the storage means 16,
Output to the display means 17 is also performed.

Next, the operation will be described.

The current flowing through the motor 10 is detected by the current detecting means 14 and output to the control means 8 (for example, 1.2 A). Upon receiving this, the control means 8 performs an operation of inputting a corresponding correction value from the stored value of the storage means 16, but the current value of 1.2 A is not in the stored value (see FIG. 10). In this case, it is determined that the motor 10 is in an abnormal state. In this state, since the input of the operation means 2 cannot be detected with high accuracy, the control means 8 outputs an abnormality to the display means 17. Upon receiving this, the display means 17 performs a display to notify the abnormality.

Here, the display means 17 is the operation means 2
The switch may also be provided with a function of displaying the selected state corresponding to each of the switches, or may be provided other than at the hand operation unit 102a.

As a result, an abnormality can be displayed, an input can be made to the operating means 2 which does not cause a malfunction, the ON / OFF state of the switch can be accurately determined, and the hand operating section 102a which the user handles every time cleaning is performed. And the weight of the hose 102 can be reduced. Abnormalities may be notified to the user not only by display but also by sound, or by both display and notification.

In the first to fifth embodiments, the configuration in which the control means 8 is provided in the main body 101 of the vacuum cleaner has been described.
It may be provided on a connection pipe attached to the end on the one side, and in this case, the operation means 2
And the hose 102 can be reduced to three conductors, and the weight of the hand operation unit 102a and the hose 102 can be reduced.

[0059]

According to the first aspect of the present invention,
The weight of the hand operation unit and the hose can be reduced, the cleaning workability can be improved, and the signal from the operation means can be accurately detected regardless of whether the motor is driven or stopped.

According to the second aspect of the present invention, the signal of the operating means can be input at the time when no current is flowing through the motor, and accurate determination can be made.

According to the third aspect of the present invention, even when a variation in constant or a variation due to the environment occurs, a state in which no current flows through the motor can be taken for a long time.
The input of the operation means can be performed with higher accuracy.

According to the fourth aspect of the present invention, since the detection value is corrected by the current of the motor, the input of the operating means can be performed with high accuracy irrespective of the difference in the surrounding environment such as the floor surface or the specification environment.

According to the fifth aspect of the present invention, it is possible to notify the user of the abnormality of the motor.

[Brief description of the drawings]

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

FIG. 2 is a block diagram of an AC / DC converter of the vacuum cleaner.

FIG. 3 is a table showing output correction of operation means of the vacuum cleaner.

FIG. 4 is a top view of a hand operation unit of a hose of the vacuum cleaner.

FIG. 5 is a circuit block diagram of a vacuum cleaner showing a second embodiment of the present invention.

FIG. 6 is an operation waveform diagram of each part of the vacuum cleaner.

FIG. 7 is a circuit block diagram of a vacuum cleaner showing a third embodiment of the present invention.

FIG. 8 is an operation waveform diagram of each part of the vacuum cleaner.

FIG. 9 is a circuit block diagram of a vacuum cleaner showing a fourth embodiment of the present invention.

FIG. 10 is a table showing output correction of operation means of the vacuum cleaner.

FIG. 11 is a circuit block diagram of a vacuum cleaner showing a fifth embodiment of the present invention.

FIG. 12 is an external perspective view of a vacuum cleaner.

FIG. 13 is a circuit block diagram of a conventional vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric blower 2 Operating means 3 Detecting means 8 Control means 10 Motor 11 Zero volt detecting means 13 Timer 14 Current detecting means 16 Storage means 17 Display means 101 Vacuum cleaner main body 102 Hose 102a Hand operating part 105 Nozzle

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takafumi Ishibashi 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Masakazu Fukushima 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. 3B057 DA08 DA09 DB01

Claims (5)

[Claims] 1. A nozzle having a brush driven by a motor, an electric blower for generating a suction force, a main body of a vacuum cleaner having the built-in electric blower, one end connected to the main body of the vacuum cleaner, and the other end. A hose having a hand operation part on the side thereof, a lead wire provided on the hose for supplying electric power of the vacuum cleaner main body side to the nozzle via the hand operation part, and a lead wire provided on the hand operation part, Operating means for generating a signal voltage from the electric power of the power supply, and control means provided on the vacuum cleaner main body side for inputting a signal voltage from the operating means, wherein the control means responds to when the motor is driven and when it is stopped A vacuum cleaner that changes the judgment of the input signal voltage. 2. A nozzle having a brush driven by a motor, an electric blower for generating a suction force, a main body of a vacuum cleaner having the built-in electric blower, and one end connected to the main body of the vacuum cleaner and connected to the other end side. A hose having a hand operation unit,
A lead wire provided in the hose, a zero volt detecting means for detecting a timing of zero volt of the commercial power supply, and a hand operation unit, for supplying commercial power from the vacuum cleaner main body side to the nozzle via the hand operation unit. Operating means for generating a signal voltage from the electric power of the conductive wire, and control means provided on the vacuum cleaner main body side for performing control in accordance with the signal voltage from the operating means, wherein the control means A vacuum cleaner that inputs a signal voltage from the operation means at a timing delayed by a predetermined time from a timing of zero volts. 3. The vacuum cleaner according to claim 2, wherein the control means stops the motor for a certain period from a timing of zero volt during the driving period of the motor. 4. A nozzle having a brush driven by a motor, an electric blower for generating a suction force, a vacuum cleaner main body including the electric blower, one end connected to the vacuum cleaner main body, and the other end side. A hose having a hand-operated portion, a conducting wire provided in the hose for supplying electric power of the vacuum cleaner main body side to the nozzle via the hand-operated portion, and current detecting means for detecting a current flowing in the motor. Operating means for providing a signal voltage from the electric power of the conducting wire, provided on the hand operation unit, and control means for providing control in accordance with the signal voltage from the operating means, provided on the vacuum cleaner main body. An electric vacuum cleaner wherein the control means corrects a signal voltage according to an output of the current detection means. 5. The vacuum cleaner according to claim 4, wherein the control means performs an abnormality display or an abnormality notification when the output of the current detection means is an abnormal value.