JPH0751202A - Control circuit of vacuum cleaner - Google Patents

Abstract

(57) [Summary] [Structure] Phase control means for controlling the phase of the electric blower, position selection means for arbitrarily selecting the suction force, and a grip switch for detecting whether or not the hand operation grip portion is gripped, OF which is delayed by a predetermined time after receiving the OFF signal output from the grip switch
And an F signal delay means, and outputs the position signal to the phase control means only when the ON signal output from the OFF delay means and the position signal output from the position selection means are input. A control circuit of an electric vacuum cleaner having a switch state determination means. [Effect] With the OFF delay circuit that receives the OFF signal from the grip switch and delays the output signal for a predetermined time, the suction force is temporarily stopped even when the position is switched or when the hand suddenly leaves the grip switch. It is possible to provide an electric vacuum cleaner that is easy to use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase control circuit for a general household vacuum cleaner.

[0002]

2. Description of the Related Art Generally, an electric vacuum cleaner is a device for sucking dust and dirt by negative pressure inside the electric blower by rotating blades of an electric blower. In recent years, a user manually operates an operating unit to improve safety. There is also a vacuum cleaner equipped with a grip switch that stops the electric blower when released.

A conventional vacuum cleaner will be described below with reference to FIGS. FIG. 8 is an example of an external view of a hand operation unit of a conventional electric vacuum cleaner equipped with a grip switch.

Reference numeral 22 is a position selecting means for controlling the suction force, and 23 is a grip switch installed on the hand-operated grip portion.

Next, FIG. 9 is an example of a circuit block diagram for controlling the suction force of the electric blower. As shown in the figure, a phase control circuit 25 is connected to the electric blower 24, and a signal from the position selection means 22 of the hand operation unit is sent to the phase control circuit 25 via the grip switch 23.

The operation will be described below. First,
When the position selecting means 22 is operated while pressing the grip switch 23, the electric blower 24 starts to operate normally by the phase control circuit 25. Further, even if the position selecting means 22 is operated, if the grip switch 23 is released, no signal is sent to the phase control circuit 25.
The electric blower 24 stops. Then, when the grip switch 23 is pushed again, the suction force position at that time starts to move.

[0007]

In the structure of the conventional electric vacuum cleaner, the grip is abruptly set when the operating portion is reciprocally driven while the grip switch is set at a certain suction force position. When I released my hand from the switch, there were times when driving actually stopped even though I was feeling clean.

Further, when the grip switch is set to a certain suction position and the grip switch is in the OFF state, the user suddenly touches the grip switch, or a third person touches the grip switch when left untouched. Occasionally, it suddenly operated, and I was sometimes surprised at what was important to me.

Also, while cleaning the suction force position to high power, remove the hand from the grip switch,
When the grip switch was turned on again, the electric blower suddenly started to move from the high power, the user's hand was shocked by the inertial force of the electric blower, and the life of the electric blower was adversely affected.

Further, when cleaning is performed with the suction force position set to middle or weak, and when it is desired to momentarily increase the suction force when there is a lot of dust locally, the position selection means must be temporarily switched. It was annoying.

Further, when only a part of the carpet is laid in the room on the floor, there is the trouble of temporarily switching the power brush switch of the nozzle.

The present invention solves the above-mentioned conventional problems, and a first object of the present invention is to prevent the hand from suddenly separating from the grip switch and once stopping.

A second object is to prevent a hand or an object from accidentally touching the grip switch and malfunctioning.

A third object is to softly start the electric blower only when the grip switch is turned on in the high power position.

A fourth object is to maximize the suction force only when the grip switch is pushed.

A fifth object is to drive the power brush only when the grip switch is pressed.

[0017]

In order to achieve the first object, the present invention provides a phase control means for controlling the phase of an electric blower, a position selection means for arbitrarily selecting a suction force, and a hand operation grip. A grip switch for detecting whether or not a hand-operated grip portion provided on the grip portion is gripped, and an OFF-time delay means for outputting a delay for a predetermined time after receiving an OFF signal output from the grip switch, An electric vacuum cleaner having switch state determination means for outputting the position signal to the phase control means only when the ON signal output from the OFF delay means and the position signal output from the position selection means are input. This is the first problem solving means.

In order to achieve the second object, the phase control means for controlling the phase of the electric blower, the position selection means for arbitrarily selecting the suction force, and the hand operation grip provided on the hand operation grip portion. A grip switch for detecting whether or not a part is gripped, and an ON-time delay means for delaying and outputting a predetermined time after receiving an ON signal output from the grip switch, are output from the ON-time delay means. The ON control signal and the control signal of the vacuum cleaner having the switch state determination means for outputting the position signal to the phase control means only when the position signal output from the position selection means is input. The second means for solving problems.

Further, in order to achieve the third object, phase control means for controlling the phase of the electric blower, and soft start means for causing the phase control means to start up by software,
A position selecting means for arbitrarily selecting the suction force and a grip switch for detecting whether or not the hand operation grip portion provided on the hand operation grip portion is grasped, and an ON signal output from the grip switch is provided. ,
A switch state determination means (4) that outputs the position signal only when the position signal output from the position selection means is input, and a determination whether the position signal from the switch state determination means is high power or not. A third problem solving means is provided by a control circuit of an electric vacuum cleaner having a position determination means for outputting to the soft start means at the time of high power, and outputting to the phase control means as it is at other positions. .

In order to achieve the fourth object, the phase control means for controlling the phase of the electric blower, the power dash means for outputting a high power signal to the phase control means, and the suction force are arbitrarily selected. It is composed of a position selection means and a power dash grip switch provided at the front end of the hand operation grip portion. When the position signal output from the position selection means is input, the position signal is sent to the phase control means. A position signal that is output and is output from the position selection means, and ON that is output from the power dash grip switch
A fourth problem solving means is provided by a control circuit of an electric vacuum cleaner having an operation mode determination means for outputting a power dash signal to the power dash means when a signal is input.

In order to achieve the fifth object, phase control means for controlling the phase of the electric blower, brush driving means for driving the power brush electric motor, and operation for arbitrarily selecting suction force and brush driving It comprises a mode selection means and a brush driving grip switch provided at the front end of the hand operation grip portion. When the position signal output from the operation mode selection means is input, the position signal is supplied to the phase control means. The position signal output from the operation mode selection means and the ON signal output from the brush driving grip switch, the selected position signal is output to the phase control means. A control circuit for an electric vacuum cleaner having an electric motor drive control means for outputting a drive signal to the brush drive means. Ri is the fifth means for solving problems.

[0022]

With the above-mentioned structure, the first problem solving means of the present invention uses the OFF-time delay circuit that receives the OFF signal from the grip switch and delays the output signal for a set time, so that the hand is abruptly sucked away from the grip switch. It is possible to prevent the force from stopping for a moment.

Further, according to the second means for solving the problem, the ON-time delay circuit which receives the ON signal from the grip switch and delays the output signal by the set time causes the hands and objects to be abruptly changed while the cleaning is temporarily stopped. It is possible to prevent the malfunction by touching the grip switch.

Further, by the third problem solving means, the position determining means determines the position, and the soft start means is activated only when the grip switch is turned on at the high power position to softly start the electric blower. .

According to the fourth problem solving means, the operation mode discriminating means discriminates the operating state of the position selecting means and the power dash grip switch, any one of the positions is selected, and the power dash grip switch is pushed. Only when the suction power can be maximized.

Further, according to the fifth problem solving means, the electric motor drive determination means determines the operation state of the operation mode selection means and the brush drive grip switch, and any one position is selected, and the brush drive grip switch is selected. The power brush can be driven only when is pressed.

[0027]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described with reference to FIG.
This will be described with reference to 2.

FIG. 1 is a circuit block diagram, 1 is an AC power supply,
Reference numeral 2 is an electric blower, 3 is a bidirectional three-terminal thyristor, and 4 is a phase control means for controlling the phase of the electric blower 2. Further, 5 is a position selecting means for selecting the suction force, 6 is a grip switch for detecting whether or not the hand operation grip portion is gripped, and 7 is an OF from the grip switch 6.
OFF delay means for delaying the set time output only by the F signal, 8 receives the ON signal from the OFF delay means 7,
Further, the switch state determination means (2) outputs the position signal to the phase control means 4 only when the position signal selected from the position selection means 5 is input.

FIG. 2 is an external view of the hand operation unit, 5 is a position selecting means, and 6 is a grip switch, which is installed below the hand operation grip unit.

The operation of the above configuration will be described with reference to the drawings. First, the operation of the switch state determining means (2) of 8 will be described. Basically, the switch state determining means of the present invention is the position selecting means 5 if the position selecting means 5 and the grip switch 6 are simultaneously turned on. The selected suction force position signal is output to the next stage, and if either one or both are turned off, the off signal is output to the next stage. Here, since the OFF delay means 7 is inserted between the grip switch 6 and the switch state determination means (2) of 8, for example, after turning on the grip switch 6, the position selecting means 5 changes the suction force position. When selected, the switch state determination means (2) of the normal mode 8 instantaneously outputs to the phase control means 4, and the phase control means 4 controls the phase of the electric blower 2 by the selected suction force position signal. .
Also, even if the grip switch 6 is turned on after the suction force position is selected by the position selection means 5, the grip switch 6 is instantly turned off.
The time delay means 7 outputs the signal to the switch state determination means (2) 8 and the phase control means 4 controls the phase of the electric blower 2 by the selected suction force position signal. However, when only the grip switch 6 is turned off thereafter, the OFF delay unit 7 operates and outputs the OFF signal after the set time, so that the electric blower 2 is controlled in the selected suction force position until then. There is.
Then, after the set time, the OFF delay unit 7 outputs an OFF signal, so that the electric blower 2 is stopped.

As described above, according to the first embodiment of the present invention, when the delay time of the OFF delay means 7 is set to the position change or during the reciprocating motion of the hand, the hand suddenly moves from the grip switch 6. By setting the separation time, it is possible to prevent the suction force from temporarily stopping during cleaning.

The present embodiment can also be performed by a microcomputer. Further, it goes without saying that it can also be used for controlling a power brush.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 3 is a circuit block diagram, 9 is an O delaying the set time output by the ON signal from the grip switch 6.
N-hour delay means 10 is ON from the ON-time delay means
The switch state determining means (3) outputs a position signal to the phase control means 4 only when a signal is input and the position signal selected from the position selection means 5 is input.

The operation of the above configuration will be described with reference to the drawings. The basic operation of the switch state determination means (3) of the tenth embodiment is the same as that of the switch state determination means (2) of the eighth embodiment, and the description thereof will be omitted.

Here, since the ON-time delay means 9 is inserted between the grip switch 6 and the switch state determination means (3) of 10, for example, after the grip switch 6 is turned ON (ON-time delay means 9 After the setting delay time), when the suction force position is selected by the position selection means 5, the switch state determination means (3) of the normal mode 10 instantaneously outputs to the phase control means 4 and the phase is selected by the selected suction force position signal. The control means 4 controls the phase of the electric blower 2. After that, when only the grip switch 6 is turned off, the ON-time delay means 9 instantaneously outputs an OFF signal to the switch state determination means (3) 10 so that the electric blower 2 is stopped. However, after that, turn the grip switch 6 off again.
When it is N, the delay means 9 at the time of ON operates and outputs the ON signal after a set time.
Has stopped. Then, after the set time, the ON-time delay means 9 outputs an ON signal, so that the phase control means 4 controls the phase of the electric blower 2 with the suction force position signal selected until then.

As described above, according to the second embodiment of the present invention, when the delay time of the ON delay means 9 is set, after the position selecting means 5 is turned ON, the grip switch 6 is turned ON, there is no discomfort. Depending on the setting, the user suddenly touches the grip switch 6 during suspension,
It is possible to prevent sudden malfunctions when a third person unexpectedly touches it while it is left as it is.

The present embodiment can also be performed by a microcomputer. Further, it goes without saying that it can also be used for controlling a power brush.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. The same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 4 is a circuit block diagram, and 11 is a soft start means for softening the phase control means.
Reference numeral 12 is a switch state determination means (4) that outputs the position signal only when the ON signal is input from the grip switch 6 and the position signal selected from the position selection means 5 is input, and 13 is the switch state determination. The position determining means determines whether or not the position signal from the means 12 is high power, outputs it to the soft start means 11 when it is high power, and outputs it to the phase control means 4 as it is at other positions.

The operation of the above configuration will be described with reference to the drawings. The basic operation of the twelfth switch state judging means (4) of the present embodiment is the same as that of the eighth switch state judging means (2) of the above embodiment, and the description thereof will be omitted.

First, by operating the position selection means 5 and the grip switch 6, the position signal output from the switch state determination means (4) 12 is determined by the position determination means 13 whether the suction force position is high power or not. When it is determined to be high power, a high power signal is output to the soft start means 11. Upon receiving the high power signal, the soft start means 11 does not output the high power signal immediately but gradually advances the phase cut time from the OFF state, and finally outputs the high power signal. When the switch state determination means (4) of 12 determines that the position is other than the high power position, the position input is directly output to the phase control circuit 4. For example, after turning on the grip switch 6,
When the suction force position is weakly selected by the position selection means 5, the switch state determination means (4) of the normal mode 12 instantaneously outputs the weak signal to the position determination means 13,
The position determination means 13 outputs the same to the phase control means 4, and the electric blower 2 is operated at the weak position. However, when the suction force position is selected to be high power by the position selecting means 5 after turning on the grip switch 6, the switch state determining means (4) 12 outputs the high power signal to the position determining means 13 instantaneously, The position determination means 13 is the soft start means 11
Since the high power signal is output to the electric blower 2, the electric blower 2 gradually rises and is finally operated in the high power position.

As described above, according to the third embodiment of the present invention, when the suction force position is set to high power, even if the grip switch 6 is turned on and off, the grip power does not suddenly rise from high power. Since the electric blower is always started softly, it is possible to prevent the user's hand from being shocked by the inertial force of the electric blower.

The present embodiment can also be performed by a microcomputer. Further, it goes without saying that it can also be used for controlling a power brush.

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

FIG. 5 is a circuit block diagram, 14 is a power dash means for outputting a high power signal to the phase control means 4, 15 is a power dash grip switch installed at the front end of the hand operation grip portion, and 16 is a position selection. When the position signal selected from the means 5 is input, the position signal is output to the phase control means 4, the position signal selected from the position selection means 5 is input, and the grip switch 15 for the power dash 15
When the ON signal is input from the power dash means 1
4 is a driving mode discriminating means for outputting a signal.

FIG. 6 is an external view of the hand operation section, 5 is a position selecting means, 15 is a power dash grip switch (19 is a brush drive grip switch = explained later), and a finger is provided at the front end of the hand operation grip section. It is installed in a position where you can hook it immediately if you extend it.

The operation of the above configuration will be described with reference to the drawings. First, when the position signal selected from the position selection means 5 is input, the operation mode determination means 16 outputs the position signal to the phase control means 4, and the position signal selected from the position selection means 5 is input. In addition, since the signal is output to the power dash means 14 when an ON signal is input from the power dash grip switch 15, the power dash grip switch 15 should be turned on only when any position is selected. As a result, an ON signal is sent to the power dash means 14 that causes the phase control means 4 to output a high power signal, and the electric blower 2 is in high power operation. Then, by turning off the grip switch 15 for power dash, the operation at the suction force position selected until then is restarted.

As described above, according to the fourth embodiment of the present invention, the suction force can be maximized only while the power dash grip switch 15 is being pushed, and the maximum suction force can be instantaneously drawn out.

The present embodiment can also be performed by a microcomputer. (Fifth Embodiment) Next, a fifth embodiment of the present invention will be described with reference to FIGS. The same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 7 is a circuit block diagram, in which 17 is a power brush electric motor, 18 is a brush driving means for driving the power brush electric motor 17, and 19 is an operation mode selecting means for selecting suction force and brush driving. Reference numeral 20 is a brush drive grip switch installed at the front end of the hand-operated grip portion, and reference numeral 21 is a position signal output from the operation mode selection means 19 to the phase control means 4 when the position signal is input to the operation. When the selected position signal is input from the mode selection unit 19 and the ON signal is input from the brush drive grip switch 20, the selected position signal is output to the phase control unit 4 and the brush drive unit 18 is also provided. It is a motor drive control means for outputting a drive signal to.

The operation of the above configuration will be described with reference to the drawings. First, when the position signal selected from the operation mode selection unit 19 is input, the electric motor drive control unit 21 outputs the position signal to the phase control unit 4, and the position signal selected from the operation mode selection unit 19 is output. When the input signal is input and the ON signal is input from the brush drive grip switch 209, the selected position signal is output to the phase control means 4 and the drive signal is output to the brush drive means 18. Even when only the suction force is selected by the means 19, by turning on the brush drive grip switch 20, the electric motor drive control means 21 instantly drives the brush drive means 18 to rotate the power brush of the nozzle. .

As described above, according to the fifth embodiment of the present invention, even in a room where a carpet is partially laid between floors, the power brush of the nozzle can be easily rotated temporarily.

The present embodiment can also be performed by a microcomputer.

[0055]

As is apparent from the above embodiments, according to the first means of the present invention, the grip switch is turned off.
O that receives a signal and delays its output signal for a set time
The FF delay circuit prevents the suction force from stopping even when the hand suddenly separates from the grip switch during position switching or during reciprocating motion of the hand. A vacuum cleaner can be provided.

According to the second means, the ON-time delay circuit that receives the ON signal from the grip switch and delays the output signal for a set time may cause the user to suddenly touch the grip switch during suspension. In addition, it is possible to prevent a sudden malfunction when a third person unexpectedly touches it while leaving it as it is, and to provide a highly safe electric vacuum cleaner.

Further, according to the third means, the position determining means determines the position, and the soft start means is activated only when the grip switch is turned on in the high power position to softly start the electric blower. Thus, it is possible to provide a user-friendly, long-life vacuum cleaner that does not give a shock to the user's hand due to the inertial force of the electric blower.

According to the fourth means, the operation mode discriminating means discriminates the operating state of the position selecting means and the power dash grip switch, any one of the positions is selected, and the power dash grip switch is pushed. It is possible to provide an easy-to-use electric vacuum cleaner that can maximize the suction force only when the maximum suction force is instantaneously drawn.

According to the fifth means, the electric motor drive judging means judges the operating state of the operation mode selecting means and the brush driving grip switch, and one of the positions is selected, and the brush driving grip switch is selected. The power brush can be driven only when is pressed, and even in the room where the carpet is partially laid between the floors, the power brush of the nozzle can be easily rotated temporarily, making it easy to use. A good vacuum cleaner can be provided.

[Brief description of drawings]

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

FIG. 2 is an external view of a hand operation unit in the first, second, and third embodiments of the control circuit of the electric vacuum cleaner.

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

FIG. 4 is a circuit block diagram of a control circuit of a vacuum cleaner according to a third embodiment of the present invention.

FIG. 5 is a circuit block diagram of a control circuit for a vacuum cleaner according to a fourth embodiment of the present invention.

FIG. 6 is an external view of a hand operation unit in fourth and fifth embodiments of the control circuit of the electric vacuum cleaner according to the present invention.

FIG. 7 is a circuit block diagram of a control circuit of a vacuum cleaner according to a fifth embodiment of the present invention.

FIG. 8 is an external view of a hand operation unit of a control circuit of a conventional vacuum cleaner.

FIG. 9 is a circuit block diagram of a control circuit of a conventional vacuum cleaner.

[Explanation of reference numerals] 6 grip switch 7 delay means at OFF 8 switch state determination means (2) 9 delay means at ON 10 switch state determination means (3) 11 soft start means 12 switch state determination means (4) 13 position determination means 14 Power Dash Means 15 Power Dash Grip Switches 16 Driving Mode Discriminating Means 20 Brush Drive Grip Switches 21 Electric Motor Drive Control Means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuichi Shimizu 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A phase control means for controlling a phase of an electric blower, and a position selection means for arbitrarily selecting a suction force,
A grip switch that detects whether or not the hand operation grip provided on the hand operation grip is gripped,
An OFF-time delay means for outputting a delay for a predetermined time after receiving an OFF signal output from the grip switch, and an ON signal output from the OFF-time delay means and a position output from the position selection means. A control circuit for an electric vacuum cleaner having a switch state determination means for outputting the position signal to the phase control means only when a signal is input. 2. A phase control means for controlling the phase of the electric blower, and a position selection means for arbitrarily selecting the suction force,
A grip switch that detects whether or not the hand operation grip provided on the hand operation grip is gripped,
The ON signal output from the grip switch is delayed by a predetermined time and then output, and the ON signal output from the ON delay unit and the position output from the position selecting unit. A control circuit for an electric vacuum cleaner having a switch state determination means for outputting the position signal to the phase control means only when a signal is input. 3. A phase control means for controlling the phase of the electric blower, a soft start means for softly raising the phase control means, a position selection means for arbitrarily selecting the suction force, and a hand operation grip portion. And a grip switch for detecting whether or not the hand-operated grip portion is gripped, and only when an ON signal output from the grip switch and a position signal output from the position selection means are input. The switch state determining means for outputting a position signal and the position signal from the switch state determining means determine whether or not the power is high power. When the position signal is high power, the soft start means outputs the signal. Control time of vacuum cleaner having position discrimination means for outputting to phase control means Road. 4. A phase control means for controlling a phase of an electric blower, a power dash means for outputting a high power signal to the phase control means, a position selection means for arbitrarily selecting a suction force, and a front end of a hand operation grip portion. When the position signal output from the position selecting means is input, the position signal is output to the phase control means and output from the position selecting means. Control circuit of the electric vacuum cleaner having a driving mode discriminating means for outputting a power dash signal to the power dash means when an ON signal outputted from the power dash grip switch is inputted. 5. A phase control means for controlling the phase of the electric blower, a brush driving means for driving the power brush electric motor, an operation mode selecting means for arbitrarily selecting the suction force and the brush driving, and a front end of the hand operation grip portion. When the position signal output from the operation mode selection unit is input, the position signal is output to the phase control unit, and the operation mode selection unit outputs the position signal. An electric motor that outputs a position signal that is output and a selected position signal to the phase control unit when an ON signal that is output from the brush drive grip switch is input, and also outputs a drive signal to the brush drive unit. A control circuit for an electric vacuum cleaner having drive control means.