JPH06245888A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To eliminate harshness and to reduce noise by changing the sound volume of a sound means to a sound volume responding to the noise of the electric blower by a control means responding to the input to an electric blower. CONSTITUTION:By operating an output high/low power setting button, an H level is outputted from an output terminal to control a buzzer 43 of a micro computer 81, and a transistor 95 is turned ON. In the state the electric blower input is strong, since the electric charge charged to a condenser 93 increases and the voltages of the condenser 93 and the buzzer 43 also increase, the alarm buzzer 43 sounds loudly corresponding with the output of the electric blower. In the state the electric blower input is weak, since the electric charge charged to the condenser 93 decreases and the voltages of the condenser 93 and the buzzer 43 also decrease, the alarm buzzer 43 sounds calmly corresponding with the output of the electric blower. Since the sound volume of the alarm buzzer 43 changes depending on noise from the electric blower, there are no harsh and sense of incompatibility even in a small noise of the electric blower.

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 capable of varying the output of an electric blower.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner of this type has an electric blower body having a built-in electric blower and a control means for controlling the electric blower, and has a hose connected to the electric vacuum cleaner body. There is provided operation means for starting and stopping the electric blower and increasing or decreasing the output of the electric blower from the control means via the transmission line.

Then, each time the operating means is operated, a notification sound or the like is generated to inform the operator that the operating means has been operated reliably.

[0004]

However, in the electric vacuum cleaner having the above-mentioned conventional structure, even when the output of the electric blower is reduced and the noise from the electric blower is small, the output of the electric blower is the maximum and the noise from the electric blower is high. Even if the noise is loud, the volume of the voice is constant, so the operator feels uncomfortable, and if the output of the electric blower is reduced to reduce the noise, for example, reduce the noise sufficiently. It has a problem that is not a problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric vacuum cleaner capable of notifying the volume corresponding to the noise of an electric blower.

[0006]

The electric vacuum cleaner of the present invention comprises:
An electric blower whose output changes according to an input, a sounding means for informing, and a control means for controlling the electric blower and the sounding means, wherein the control means outputs the sound according to an input to the electric blower. This is to change the volume of the means.

[0007]

According to the present invention, the volume of the sounding means is changed by the control means according to the input to the electric blower, and when the input of the electric blower is large and the noise is loud, the sound volume of the sounding means is increased. When the input of the blower is small and the noise is low, the volume of the sounding means is lowered, and the volume corresponds to the noise of the electric blower, so that the noise can be reduced and the voice does not feel uncomfortable.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the electric vacuum cleaner of the present invention will be described below with reference to the drawings.

In FIG. 3, reference numeral 1 denotes an electric vacuum cleaner main body, to which a base end of a hose body 2 is detachably connected, and a rear end of the hose body 2 is branched. A hand operation unit 3 having a curved shape is provided. A suction port body 5 is attached to the tip of the hand operation section 3 through an extendable extension tube 4.

As shown in FIGS. 4 and 5, the electric vacuum cleaner main body 1 has a main body case 12 having an opening 11 at the front upper portion thereof, and the opening 11 of the main body case 12 is openably and closably covered from above. The main body case 12 includes a lid body 13, and a main body case 12 includes a lower main body case member 14 and an upper main body case member 15 fixed to an upper rear portion of the lower main body case member 14. A steering wheel 16 is rotatably attached to the lower front portion of the main body case 12 in a directionally variable manner, and a driven wheel 17 is rotatably attached to the rear portion thereof.

Further, in the main body case 12, a partition wall 22 having a lattice hole 21 defines a dust collection chamber 23 facing the opening 11 in the front part, and an electric blower chamber 24 in the rear part. Has been formed. A rotatable clamp 25 is pivotally mounted in the dust collecting chamber 23, and the dust bag 26 is detachably held by the clamp 25. An auxiliary filter 27 that covers the lattice holes 21 is attached to the front side of the partition wall 22.

On the other hand, in the electric blower room 24, an electric blower is installed.
31 is supported between the upper main body case member 15 and the lower main body case member 14, and the surroundings are covered with the sound deadening body 32. And
The intake side of the electric blower chamber 24 communicates with the dust collection chamber 23 through the lattice hole 21, and the exhaust side communicates with the outside through the exhaust filter 34 to the main body exhaust port 33 formed in the rear surface of the upper main body case member 15. Has been done.

Further, at the front of the main body case 12, there is formed an insertion port 35 to which the hose body 2 is detachably fitted and connected,
It communicates with the dust collection chamber 23. A plate-like shutter 36 is slidably supported in the insertion port 35 in the vertical direction, and the insertion port 35
Can be opened and closed freely.

On the other hand, a partition wall 41 is provided behind the electric blower room 24.
And a circuit housing chamber 42 is formed on the rear side of the partition wall 41. A board 44, on which a buzzer 43 as a sounding means is attached, is attached to the circuit storage chamber 42.

Further, as shown in FIG. 4, the electric blower room 24
On one side, a cord reel storage chamber 45 is defined by a support wall 46. The cord reel storage chamber 45 has a cord reel having a rotation axis parallel to the width direction of the main body case 12.
47 are stored. A power supply line 48 connected to a commercial AC power supply is wound around the cord reel 47.
The plug 49 attached to the tip of the lower body case member 14
It is discharged to the outside through the insertion port 50 formed in the.

Further, the upper body case member of the body case 12
A cover body 51 is attached to the rear of the unit 15 so as to be openable and closable.

The cover body 51 has an outer shape such that the upper main body case member 15 and the lower main body case member 14 are continuous and substantially flush with each other, and is inserted into an insertion opening (not shown) of the lower main body case member 14. Further, a lattice-shaped cover body exhaust port 52 is formed substantially at the center of the cover body 51 so as to communicate with the main body exhaust port 33 when the cover body 51 is connected to the main body case 12. An exhaust filter 53 is attached to the cover body exhaust port 52.

On the other hand, an accommodating portion 55 is formed on the upper portion of the cover body 51 and accommodates the hanging opening 56.

Further, as shown in FIG. 3, the hand operation section 3 is branched rearward so that the free end portion is a grip portion.
61, and the upper surface of the hand operation portion 3 extends from the grip portion 61 to the extension pipe 4
The button 62 for stop setting, the button 63 for automatic setting, the button 64 for setting the output strength and the button 66 for the power brush 65 provided in the suction port body 5 are sequentially arranged in a line in the direction of It is arranged.

Next, the internal structure will be described with reference to FIG. First, the electric blower 31 provided in the vacuum cleaner body 1 and the power brush 65 provided in the suction port body 5 are connected to the commercial AC power source E via the power control triacs 71 and 72, respectively. It is connected to the. The control means 73 incorporated in the electric vacuum cleaner body 1 is connected to the gates of the triacs 71, 72. Further, the control means 73 is provided with a buzzer 43 and a manual operation section. Buttons 62, 63, 64, 66 for each setting arranged in 3
An operating means 74 composed of is connected.

Further, the concrete circuit of the control means 73 is shown in FIG.
As shown in.

In FIG. 4, reference numeral 81 is a microcomputer, the output terminal for controlling the electric blower 31 of the microcomputer 81 is connected to the base of a transistor 83 via a resistor 82, and the emitter of the transistor 83 is connected to a power supply. A resistor 84 is connected between the emitter and base,
The collector is grounded via a series circuit of a resistor 85 and a light emitting diode 86. Further, the light emitting diode 86 is photocoupled to the phototriac 87, and the phototriac 87 is connected to the triac 71 via the resistor 88.
Is connected between one end and the gate.

Further, the output terminal for controlling the electric blower 31 of the microcomputer 81 is a diode 91, a resistor 92,
It is connected to a buzzer 43 via a capacitor 93 and a resistor 94, the other end of which is the collector of a transistor 95,
The buzzer 43 is grounded through the emitter and has a resistor
96 is connected.

The buzzer 43 of the microcomputer 81
The output terminal for controlling B is connected to the base of the transistor 95 via the diode 97, the resistor 98, and the resistor 99, and is connected to the buzzer 43 via the resistor 100.

When increasing the output of the electric blower 31, the microcomputer 81 outputs the L level with the output terminal having a small phase angle, and conversely, the electric blower 31.
When the output of the buzzer 43 is reduced, the output terminal outputs the L level with a large phase angle, and when the buzzer 43 is operated, the control terminal of the buzzer 43 is set to the H level.

Next, the operation of the above embodiment will be described.

First, if the button 64 for setting the output strength is strong before being operated, the control output terminal of the electric blower 31 of the microcomputer 81 outputs the L level with the phase angle being small, and the transistor 83 is turned on. It turns on when the phase angle is small, and the light emitting diode 86 turns on when the phase angle is small,
The phase angle of ON of the photo triac 87 and the triac 71 becomes small, and the input to the electric blower 31 increases,
The output of the electric blower 31 increases and the noise also becomes relatively large.

By operating the output strength setting button 64, the output terminal for controlling the buzzer 43 of the microcomputer 81 outputs an H level to turn on the transistor 95. When the input of the electric blower 31 is strong, the electric charge charged in the capacitor 93 increases and the voltage of the capacitor 93 increases as shown by V93H in FIG.
Since the voltage of the buzzer 43 also rises as shown by H, the buzzer 43 for notification is output with a loud voice according to the output of the electric blower 31.
Sounds.

On the other hand, if the button 64 for setting the output strength is weak, for example, the output terminal for control of the electric blower 31 of the microcomputer 81 outputs L level with a large phase angle, and the transistor 83 is operated. Is turned on when the phase angle is large, the light emitting diode 86 is turned on when the phase angle is large, and the turn-on phase angle of the photo triac 87 and the triac 71 is increased, the input to the electric blower 31 is reduced, and The output of the blower 31 is reduced and the noise is reduced.

By operating the output strength setting button 64, the output terminal for controlling the buzzer 43 of the microcomputer 81 outputs an H level to turn on the transistor 95. When the input of the electric blower 31 is weak, the electric charge charged in the capacitor 93 decreases and the voltage of the capacitor 93 decreases as shown by V93L in FIG.
Since the voltage of the buzzer 43 also drops as indicated by V43L, the buzzer sounds with a small voice in accordance with the output of the electric blower 31.

When the output strength setting button 64 is set to a weak value while the electric blower 31 is stopped, as shown in FIG. 8, the electric charge in the capacitor 93 is small. Since the voltage of the capacitor 93 is low and the voltage of the buzzer 43 is also low, the buzzer 43 sounds with a small voice.

If the electric blower 31 is in a weak state and the automatic setting button 63 is operated to set the automatic setting, as shown in FIG. Since the voltage of is low and the voltage of the buzzer 43 is low, the buzzer 43 sounds with a small voice.

Further, when the electric blower 31 is in the strong state and the output strength setting button 64 is operated to set it to the weak level, as shown in FIG.
As indicated by 0, since the capacitor 93 has a large amount of electric charge, the voltage of the capacitor 93 is high and the voltage of the buzzer 43 is also high, so that the buzzer 43 sounds with a loud voice.

Furthermore, when the electric blower 31 is in a strong state,
When the stop setting button 62 is operated to set the stop, as shown in FIG. 11, the voltage of the capacitor 93 is high and the voltage of the buzzer 43 is also high because a large amount of charge is charged in the capacitor 93. The buzzer 43 sounds.

According to the above-mentioned embodiment, the volume of the notification buzzer 43 changes according to the noise generated from the electric blower 31, so that even if the noise of the electric blower 31 is small, there is no discomfort and no discomfort. Absent.

Next, a circuit other than the control means 73 shown in FIG. 2 will be described with reference to FIG.

In the circuit shown in FIG. 12, in the circuit shown in FIG. 2, the anode of the diode 91 is connected to the connection point of the collector of the transistor 83 and the resistor 85, and the base of the transistor 95 is connected between the power supply and the ground. Resistance 101
And a resistor 102 connected to the connection point.

First, when the output strength setting button 64 is operated to increase the strength, the output terminal for controlling the buzzer 43 of the microcomputer 81 outputs an H level to turn on the transistor 95. When the input of the electric blower 31 is strong, the electric charge charged in the capacitor 93 increases, the voltage of the condenser 93 increases, and the voltage of the buzzer 43 also rises.Therefore, a loud voice is output according to the output of the electric blower 31. The buzzer sounds.

On the other hand, when the output strength setting button 64 is operated to weaken the output, the output terminal for controlling the buzzer 43 of the microcomputer 81 outputs an H level to turn on the transistor 95. When the input of the electric blower 31 is weak, the charge charged in the capacitor 93 decreases, the voltage of the capacitor 93 decreases, and the voltage of the buzzer 43 also decreases. The buzzer sounds with a voice.

Further, another control means 73 will be described with reference to FIG.

The microcomputer 81 shown in FIG.
Has three terminals that control the output of the buzzer 43,
A resistor 103 is provided in series with the buzzer 43. Also,
A series circuit of a resistor 104, a resistor 105 and a transistor 106 and a series circuit of a resistor 107 and a transistor 108 are connected in parallel to the buzzer 43, and the transistor 10
The base of 6 is connected to the terminal that controls the output of buzzer 43 via resistor 109, and the base of transistor 108 is resistor 11
It is connected via 0 to the terminal that controls the output of the buzzer 43. Note that the resistance value of the resistor 105 is larger than the resistance value of the resistor 107. In the case of the configuration shown in FIG. 13, the silent mode (not shown) is also supported.

First, when the input of the electric blower 31 is strong, the transistor 95 for operating the buzzer 43 is turned on, the transistors 106 and 108 are turned off, and only the resistor 104 is connected in parallel to the buzzer 43. The buzzer 43 is connected and the voltage division ratio with the resistor 103 is increased to increase the voltage applied to the buzzer 43 to maximize the ringing of the buzzer 43.

When the input of the electric blower 31 is medium, the transistor 95 for operating the buzzer 43 is turned on, the transistor 106 is turned on, and the transistor 10 is turned on.
8 is turned off, resistor 104 and resistor 105 are connected in parallel to buzzer 43, the voltage division ratio with resistor 103 is made a little larger, and the voltage applied to buzzer 43 is made slightly higher. Make the ringing high.

Further, when the input of the electric blower 31 is low, the transistor 95 for operating the buzzer 43 is turned on, the transistor 108 is turned on, and the transistor 10 is turned on.
6 is turned off, resistors 104 and 107 are connected in parallel to buzzer 43, the voltage division ratio with resistor 103 is made a little small, and the voltage applied to buzzer 43 is made a little low. Make the ringing low.

Furthermore, when the input of the electric blower 31 is silent, the transistor 95 for operating the buzzer 43 is turned on, and the transistors 106 and 10 are turned on.
8 is turned on and resistors 104 and 105 are connected in parallel to buzzer 43.
, 107 are connected in parallel to reduce the voltage division ratio with the resistor 103 to minimize the ringing of the buzzer 43.

[0046]

According to the electric vacuum cleaner of the present invention, the volume of the sounding means is changed by the control means according to the input to the electric blower, and when the input of the electric blower is large and the noise is loud, the sound is generated. When the volume of the electric blower is increased and the input of the electric blower is small and the noise is small, the volume of the sounding means is lowered, so that the volume corresponds to the noise of the electric blower.
It is possible to reduce the noise without being offensive to the ears,
There is no discomfort in the sound.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an electric vacuum cleaner of the present invention.

FIG. 2 is a circuit diagram showing a specific circuit of the control unit of the above.

FIG. 3 is a perspective view showing the same electric vacuum cleaner.

FIG. 4 is a vertical cross-sectional view showing the same electric vacuum cleaner.

FIG. 5 is a plan view with the upper main body case member removed.

FIG. 6 is a perspective view showing the same operating means.

FIG. 7 is a graph showing a comparison between cases where the buzzer operates strongly and weakly.

FIG. 8 is a graph showing the operation of the buzzer when the electric blower changes from stop to weak operation.

FIG. 9 is a graph showing the operation of the buzzer when the electric blower changes from weak operation to automatic operation.

FIG. 10 is a graph showing the operation of the buzzer when the electric blower changes from strong operation to weak operation.

FIG. 11 is a graph showing the operation of the buzzer when the electric blower changes from weak operation to stop operation.

FIG. 12 is a circuit diagram showing a specific circuit of control means of another embodiment of the same.

FIG. 13 is a circuit diagram showing a specific circuit of the control means of the same or another embodiment.

[Explanation of symbols]

 31 Electric blower 43 Buzzer as sounding means 73 Control means

Claims (1)

[Claims] 1. An electric blower whose output changes according to an input, a sounding means for informing, and a control means for controlling the electric blower and the sounding means, wherein the control means inputs to the electric blower. An electric vacuum cleaner characterized in that the volume of the sounding means is changed according to.