JP2001000373A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner small and handy with simple constitution. SOLUTION: This vacuum cleaner has a hose 102 with a conductor built therein, connected on one end side to a vacuum cleaner body 101 and provided with a handy operating part 103 on the other end side; a first switch 6 and a second switch 7 provided at the handy operating part 103 and generating signal voltage from the electric power of the conductor; a display means 10 for displaying an operating state; and a control means 3 inputting the signal voltage from the first and second switches 6, 7 to display by the display means 10. Input of signal voltage to the control means 3 and output of the display means 10 are performed by the same signal line 11 to attain miniaturization and weight reduction of the handy operating part 103 and hose 102.

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 Conventionally, in a hose having a vacuum cleaner main body and a hand operation unit, a signal for controlling an electric blower is transmitted from the hand operation unit to the vacuum cleaner main body, and the operation state of the electric blower is transmitted to the hand operation unit. When displaying the detection state from the dust sensor, the hose needs at least three signal lines. If the number of these signal lines is large,
The weight of the hose with the built-in conductor increases, the hose does not bend smoothly, and the configuration of the connection between the main body and the hose becomes complicated due to the large number of connections.

[0003] In addition, while diversification of functions and higher added value are required as needs, there is a persistent need for miniaturization.

It is also true that a simple mechanism and configuration are always desired.

[0005]

In the structure of such a conventional vacuum cleaner, the number of signal lines in the hose cannot be reduced in a state where the number of control signals to the main body increases, and it is difficult to reduce the weight. there were.

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 which can be reduced in size with a simple structure and which improves the usability.

[0007]

In order to achieve the above object, the present invention has an object to solve the problem by inputting a signal voltage to a control means and outputting to a display means on the same signal line. With the simple configuration, the size and weight of the operation unit can be reduced, and the number of signal lines in the hose can be reduced.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The invention described in claim 1 of the present invention is as follows.
An electric blower for generating a suction force, a vacuum cleaner main body containing the electric blower, a hose having one end connected to the vacuum cleaner main body and having a hand-operated part on the other end, an extension pipe, and a nozzle And a conducting wire provided on the hose, operating means provided on the hand operating portion, for generating a signal voltage from the power of the conducting wire, and an operation state provided on the hand operating portion or the extension tube or the nozzle. Display means, and a control means provided in the vacuum cleaner main body, for inputting a signal voltage from the operation means and for displaying the display means, and for inputting the signal voltage to the control means and for displaying the display means. Are output on the same signal line.
The state of the operating means can be detected by the signal lines, and the state of the electric blower can also be confirmed by the operation unit at hand, and the size of the operation unit and its vicinity can be reduced.

According to a second aspect of the present invention, the microprocessor switches between the input value judgment of the control means signal and the output judgment of the display means at regular time intervals by a microprocessor. By switching the input / output of the line, it is possible to use the terminal without discomfort.

According to a third aspect of the present invention, the switching of the judgment of the microprocessor is performed between the timing of zero volt of the power supply voltage and the timing of the next zero volt, whereby the input of the signal line between one zero volt pulse is performed. By switching the output, the user can use the terminal without any incompatibility.

According to a fourth aspect of the present invention, the signal line of the operating means is divided from a voltage higher than the drive voltage of the microprocessor, and is connected to the port of the microprocessor so that the contact is turned on when the display is on. It is possible to provide a vacuum cleaner that can clean the part and does not malfunction.

According to a fifth aspect of the present invention, when a control means signal voltage is input, a voltage greater than a driving voltage of the microprocessor is periodically applied to the connection between the main body and the hose. Alternatively, by outputting a signal at irregular intervals, the contact portion can be cleaned regardless of whether the display is lit or not, and a vacuum cleaner free from malfunction can be provided at all times.

According to the invention of claim 6 of the present invention, by adding a suction tool having a built-in electric motor to the above-mentioned vacuum cleaner, conventionally, four or five signal lines are required in three places. In addition, it is possible to provide a vacuum cleaner capable of easily cleaning carpets and the like with the same effect.

[0014]

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

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). An electric blower 1 is disposed in the main body 101. The microprocessor 2 controls the phase of the bidirectional thyristor 4 by the control means 3 to control the phase of the electric blower 1. It controls the rotation speed. An AC / DC converter 5 supplies power to the microprocessor 2 and the control circuit 3. A hose 102 has one end connected to the main body 101 and the other end connected to a hand-held operation unit 103.

The operation section 103 displays the first switch 6 and the second switch 7 as operation means for generating a signal voltage, the first resistor 8, the second resistor 9, and the operating state of the electric blower 1. Are connected as shown in the figure. In the main body 101, the third
Are connected as shown in FIG.

Next, the operation of the vacuum cleaner constructed as described above will be described.

The configuration of the hand operation unit 103 will be described in more detail.
A is a predetermined voltage (for example, DC
The first to third resistors 8, 9, and 12 are connected between lines having 5V (point C in FIG. 1), and the first and second switches 6, 7 are connected between the resistors. One end is connected, and the other end of the power supply line (AC100V) is connected to the electric blower 1 (the line B in FIG. 1). That is, the power supply lines A and B are connected to both ends of the electric blower 1, 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 5 V DC is generated is a C line. First, when the first and second switches 6 and 7 are not pressed, the voltage of the signal line 11 connected to the port of the microprocessor 2 becomes the same potential as that of the line C.

Next, when the first switch 6 is pressed, the voltage of the signal line 11 is applied to the C line by the following formula: {third resistor 12 / (first resistor 8 + second resistor 9 + third resistor 9)}. Resistance 1
2) Δ × (voltage between lines A and C)

When the second switch 7 is pressed, the voltage of the signal line 11 becomes {third resistor 12 / (second resistor 9 + third resistor 12)} × C line. (Voltage between lines AC).

As described above, the signal line 11 depends on each state.
Changes, the microprocessor 2 can determine the state.

Since the microprocessor 2 outputs a control signal of the electric blower 1 to the control means 3 and recognizes the control state of the electric blower 1, for example,
By switching the signal line 11 to the output port only when is rotating and turning on the display means 10, the operating state of the electric blower 1 can be displayed.

As described above, the on-state of the switches 6 and 7 can be detected by the hand-held operation unit 103 having a simple configuration including the plurality of resistors 8 and 9, the switches 6 and 7, and the display means 10. Can be displayed, and the size of the hand operation unit 103 and the vicinity thereof that the user grips every time cleaning is performed can be reduced, the usability can be improved, and the device can be used easily. The contents to be displayed on the display means 10 are as follows.
It goes without saying that the state can be displayed by connecting the input of a sensor for detecting the pressure in the main body or a sensor (not shown) for detecting dust in the air passage to the input port of the microprocessor 2.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIG.

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

As shown in FIG. 2, the signal line 11 connected to the port of the microprocessor 2 shown in FIG. 1 is used by the microprocessor 2 at the input port from t0 to t1, and is used at the output port from t1 to t2. If it is switched to be used, the switches 6 and 7 are fetched while being used as an input port, and an output for displaying the display means is outputted when the switch is used as an output port.

As described above, by switching the port of the microprocessor 2 between input and output at regular time intervals,
Even if the switches 6 and 7 are pressed at any time, it can be recognized, and the usability is improved.

(Embodiment 3) A third 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 13 denotes a zero volt detecting means for detecting the timing of zero volt of the commercial power supply, and a point (a, 0) of the voltage waveform (FIG. 4A) of the commercial power supply 14 at which the voltage becomes zero volt.
(points b, c, d) are detected (FIG. 4B). When the microprocessor 2 receives the detection signal of the zero volt detection means 13, the microprocessor 2 operates to set the port of the signal line 11 to an input port first, and to set the port to an output port before the next zero volt pulse is input. I do.

As described above, since the port of the signal line 11 is switched between input and output during one zero-volt pulse, the operation is very short and cannot be perceived by the user. It can be used well without discomfort.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described with reference to FIG.

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

Reference numeral 15 denotes a voltage (for example, DC24) higher than the operating voltage of the microprocessor 2 (generally, about 5 V DC).
V), and the operating voltage of the microprocessor 2 (generally, about 5 V DC) is supplied by a power supply circuit 16.

Next, the operation will be described.

When the display unit 10 is turned on when the port to which the signal line 11 is connected is set to output, the current path flowing through the display unit 10 is changed by the display unit 10 →
The resistance 17 is changed to the third resistance 12, and is displayed between the lines A and C, that is, between DC 24V. Here, an oxide film or the like is generated at four contact points (A, B, C, and D in FIG. 5) existing at the connection portions of the hose 102, the main body 101, and the hand operation unit 103, and the contact resistance increases. Also, since 24 V DC is applied to both ends of the contact having increased contact resistance, the contact portion can be easily cleaned by destroying the oxide film.

As a result, the contact resistance of the contact increases depending on the use environment, and problems such as malfunction do not occur, and the device can be used without a sense of incongruity.

(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 18 denotes a transistor and 19 denotes a current limiting resistor, which is connected to the signal line 11 as shown in FIG. Here, the microprocessor 2 periodically switches the transistor 1 when the port of the signal line 11 is switched to the input port.
8 is turned on.

As a result, even when the display means 10 is not illuminated and displayed, an electric current is periodically applied to the contacts (A, A, C, and D), so that an oxide film or the like is generated and the contact resistance is increased. Since 24 V DC is always applied to both ends of the contact, the oxide film can be destroyed, and the contact can be easily cleaned.

As a result, the contact resistance of the contact always increases depending on the use environment even if there is no lighting display, and problems such as malfunctions do not occur, and the device can be used without feeling uncomfortable.

(Embodiment 6) Next, a sixth embodiment of the present invention will be described with reference to FIG.

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

Reference numeral 20 denotes a motor for driving a rotary brush or the like used for cleaning the floor surface of a carpet or the like. The motor 20 is built in the suction tool, and is controlled by the motor control means 21 by the microprocessor 2 and the bidirectional thyristor 22. And the rotation of the electric motor 20 is controlled.

This embodiment shows an embodiment in which a suction tool having the above-described electric motor 20 is added to the vacuum cleaner of the first embodiment, and has the same effect as that of the first embodiment. By adding a suction tool incorporating the above-described electric motor 20 to the conventional art, four or five signal lines are conventionally required in three places, so that the same effect and cleaning of carpets can be easily performed. It becomes.

It should be noted that, even if a suction tool provided with the electric motor 20 is added to the vacuum cleaner described in the second to fifth embodiments,
It is needless to say that the same effect can be obtained.

[0048]

According to the first aspect of the present invention,
With two signal lines, the status of the operating means can be detected with a simple configuration consisting of multiple resistors and switches, and the status of the electric blower can be checked at the local operating unit. Can be miniaturized and can be used without discomfort.

According to the second aspect of the present invention, by switching the input / output of the signal line at regular time intervals, it can be used without a sense of incongruity.

According to the invention of claim 3 of the present invention, 1
By switching the input / output of the signal line between two zero volt pulses, the user can use the terminal without any sense of incompatibility at all.

According to the invention of claim 4 of the present invention, the contact portion can be cleaned when the display is lit, and there is an effect that a cleaner without malfunction can be provided.

According to the fifth aspect of the present invention, the contact portion can be cleaned regardless of whether the display is lit or not, and there is an effect that a vacuum cleaner which does not always malfunction can be provided.

According to the invention as set forth in claim 6 of the present invention, the above-mentioned effects and the effect of providing a cleaner capable of easily cleaning carpets and the like are provided.

[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 state diagram of a port of a microprocessor in a circuit of a vacuum cleaner according to a second embodiment of the present invention.

FIG. 3 is a circuit block diagram of a vacuum cleaner showing a third embodiment of the present invention.

FIG. 4 is a state diagram of a port of a microprocessor of the vacuum cleaner.

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

FIG. 6 is a circuit block diagram of a vacuum cleaner showing a fifth embodiment of the present invention.

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

[Explanation of symbols]

 Reference Signs List 1 electric blower 2 microprocessor 3 control means 5 AC / DC converter 6 first switch 7 second switch 10 display means 11 signal line 13 zero volt detection means 16 power supply circuit 18 transistor 20 motor 21 control means for motor 101 electric vacuum cleaner Main unit 102 Hose 103 Hand operation unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaki Takahashi 1006 Kadoma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. F term (reference) 3B057 DB01 DD01 DE01

Claims (6)

[Claims] 1. An electric blower for generating a suction force, a main body of a vacuum cleaner having the built-in electric blower, a hose having one end connected to the main body of the vacuum cleaner and having a hand operation section on the other end side, An extension tube, a nozzle, a conductor provided in the hose, an operation means provided in the hand operation unit, for generating a signal voltage from the electric power of the conductor, and an operation means provided in the hand operation unit or the extension tube or the nozzle. Display means for displaying the operating state, and a control means provided on the main body of the vacuum cleaner, for inputting a signal voltage from the operation means and displaying the display means, and for controlling the signal voltage to the control means. A vacuum cleaner in which input and output to the display means are performed on the same signal line. 2. The vacuum cleaner according to claim 1, wherein the microprocessor switches between the input value judgment for the control means signal and the output value judgment for the display means at regular intervals. 3. The vacuum cleaner according to claim 2, wherein the switching timing of the judgment by the microprocessor is performed between the timing of zero volt of the power supply voltage and the timing of the next zero volt. 4. The vacuum cleaner according to claim 1, wherein a signal line of the operation means divides a voltage from a voltage higher than a drive voltage of the microprocessor and is connected to a port of the microprocessor. 5. A signal is periodically or irregularly output from the microprocessor so that a voltage higher than the drive voltage of the microprocessor is periodically applied to the connection between the main body and the hose when the signal voltage is input to the control means. The vacuum cleaner according to claim 4. 6. The vacuum cleaner according to claim 1, further comprising a suction tool having a built-in electric motor.