JP3178691B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner for controlling an electric blower in a state set by operating means.

[0002]

2. Description of the Related Art Conventionally, this type of vacuum cleaner is provided with an electric blower and a control means for controlling the electric blower in a main body of the vacuum cleaner, and a control means such as a hose connected to the main body of the vacuum cleaner. Operation means for setting the control state of the control means from the means via a two-wire transmission line is provided.

[0003] The operating state of the electric blower is controlled by changing the control state of the control means by controlling, for example, a current value by operating means.

In order to notify the input state of the electric blower in response to the operation state of the operation means, the light emitting diode is turned on or off, and the buzzer sounds or not.

[0005]

However, the above-mentioned conventional vacuum cleaner has a state in which a light emitting diode is turned on and a state in which the light emitting diode is turned off, or a state in which a buzzer sounds and a state in which a sound is not sounded. In this case, the current values are different, and the current values detected by the control means are different. Therefore, when the control means changes the driving state of the electric blower only by detecting the current value, the current detected even when the same operation is set by the operation means is determined by the notification state of the notification means such as a light emitting diode and a buzzer. The values are different.

Therefore, in order to make the state set by the operating means coincide with the driving state of the electric blower, when the notification is made, the operating means is made to perform the notification in order to keep the current value constant regardless of the presence or absence of the notification. In such a case, a storage means for storing the current value in the case of being used is required in the operation means, and there is a problem that the device is complicated and expensive. Further, when the cleaning is interrupted, the hose is likely to be subjected to an impact, for example, when the hose is placed on the floor, and the storage means may be damaged.

In order to perform the notification without using the storage means, the number of transmission lines from the control means must be increased.
As compared with the case of two-wire transmission, there is a problem that the productivity of the hose is reduced and the weight is increased, and the cost of the hose is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an electric vacuum cleaner for notifying the driving state of an electric blower without making the apparatus complicated and expensive.

[0009]

The vacuum cleaner of the present invention comprises:
An electric blower, operating means for setting the state of the electric blower, and control means for controlling the electric blower to the state of the electric blower set by the operating means, wherein the operating means has a set state a current control means for varying a current value, a pronounceable sound generating means according to a state of being set according to said control means, before the constant current pulse
The constant current pulse is supplied to the current control means.
The current including a current waveform to sound the sound generating means different from the constant current between the pulse output with a pulse output means for supplying to said sound generating means, the synchronization with the constant current pulses output by the pulse output unit those you detect the current value from the current control means.

[0010]

In the vacuum cleaner according to the present invention, the control means supplies a constant current pulse supplied from the pulse output means to the current control means.
During the pulse output of the flow, is supplied to the sound generating means the current including a current waveform for pronunciation Pronunciation means unlike constant current, detecting the current value from the current control means in synchronism with the current sensing means to a constant current pulse By doing so, the current for generating the sounding means having a different current waveform from the output of the constant current pulse is output at a timing different from the constant current, so that the structure is complicated even if the sounding means is generated. Current from the current control means
The value is detected correctly .

[0011]

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

In FIG. 2, reference numeral 1 denotes a vacuum cleaner main body. A base end of a hose 2 is detachably connected to the vacuum cleaner main body 1, and a distal end of the hose 2 is branched backward. A hand operation unit 3 having a shape is provided. A suction port body 5 is attached to a tip of the hand operation unit 3 via a telescopic extension tube 4.

As shown in FIG. 3, the hand operating section 3 branches backward and has a free end at the grip.
11 and the upper surface of the hand operation unit 3 is extended
, A button 12 for a stop setting, a button 13 for an automatic setting, a button 14 for a weak / strong setting, and a button 16 for a power brush are sequentially arranged in a line.

Next, an internal configuration will be described with reference to FIG.

First, the electric blower 21 is disposed in the main body 1 of the vacuum cleaner, and the power brush 22 is disposed in the suction opening 5.
Are connected to a commercial AC power supply E via power control triacs 23 and 24, respectively.

The gates of the triacs 23 and 24 are connected to control means 25 built in the main body 1 of the vacuum cleaner. The control means 25 has pulse output means 26 and current detection means 28. The pulse output means 26 supplies a constant current having a predetermined current waveform at a pulse timing, and supplies a current having a different current waveform between the pulse timings of the constant current. A predetermined current output from the output means 26 is detected.

Further, an operation means 29 is connected to the control means 25. The operation means 29 includes a button 12 for stop setting, a button 13 for automatic setting, a button 14 for weak / strong setting, and a button 14 for power brush. Current control means 30 for controlling the current in accordance with the operation of the button 16, and sounding means 31 which emits sound in accordance with the operation of each of the buttons 12, 13, 14, 16.

A part of the control means 25 and the operation means 29
Is as shown in FIG.

The control means 25 supplies a microcomputer 34 having an IV conversion means 33 for converting a current value to a voltage value to a power supply means 35 for supplying power to the operation means 29,
It includes the above-described pulse output means 26 and current detection means 28.

The power supply means 35 includes a constant voltage three-terminal regulator 37 and a capacitor 38, and outputs a constant voltage. Further, the pulse output means 26 is connected to the power supply means 35.

The current detecting means 28 includes resistors 41, 42,
It is composed of 43 and capacitors 44 and 45, and detects the current value of the operating means 29.

Further, the control means 25 comprises two-wire transmission lines 51, 52
Is connected to the operation means 29 via the. This operation means
29 is a buzzer connected in parallel between the two-wire transmission lines 51 and 52
The sound generating means 31 composed of a resistor 54 and a resistor 55 and a current limiting resistor 56 are connected in series. The buzzer 54
Is a current waveform different from the constant current from the pulse output means 26,
That is, sound is generated by a current having a current waveform as shown in FIG. In addition, the buzzer 54 is provided in the hand operation unit 3 so that the cleaning operator can easily confirm the buzzer. Note that the buzzer 54 may be provided in the vacuum cleaner main body 1.

The series circuit of the normally open switch 57 and the resistor 58 operated by the stop setting button 12 and the automatic setting button 13 are operated in parallel with the current limiting resistor 56. A normally open switch 59 and a series circuit of a resistor 60, a normally open switch 61 and a series circuit of a resistor 62 operated by a button 14 for weak / strong setting, a normally open switch operated by a button 16 for a power brush A series circuit of 63 and resistor 64 is connected. Note that resistors 58 and 6
The resistance values of 0, 62, and 64 are set to different resistance values.

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

First, as shown in FIG. 6 (f), the pulse output means 26 outputs a constant current pulse at, for example, 10 ms. Then, the current detection means 28 synchronizes with the constant current pulse of the pulse output means 26 and detects the current at a pulse-like timing shown in FIG. If the detected current is 0, the connection between the two-wire transmission lines 51 and 52 is open, so it is determined that the hose 2 is disconnected. Further, when it is detected that the current exceeds the threshold value i ₅ of the hose connection shown in FIG. 6 (c) by the current sensing means 28, as shown in FIG. 6 (d),
The hose 2 is connected and the buttons 12, 13, 1
Judge that 4 and 16 are not operated.

When the automatic setting button 13 is operated and the switch 59 is closed, the current value exceeds the threshold value i ₃ and becomes equal to or less than the threshold value i ₄ .
At the timing shown in FIG. 6G, the current is detected by the current detecting means 28, and as shown in FIG. 6A, the input of the electric blower 21 is controlled in correspondence with the automatic output. That is, the control unit 25 controls the triac 23 to drive and control the electric blower 21.

At this time, the control means 25 determines that the button 13 for automatic setting has been operated, and as shown in FIG.
The pulse output means 26 outputs a current having a current waveform that sounds a buzzer 54 different from the constant current pulse, and outputs a buzzer signal indicating that one of the buttons 12, 13, 14, 16 of the operation means 29 has been operated.
54 is sounded as shown in FIG.

Then, with the buzzer 54 sounding,
When a pulse-like constant current is output as shown in FIG. 6 (f), the buzzer 54 stops sounding as shown in FIG. 6 (e). In addition, as shown in FIG.
The current for generating the buzzer 54 and the constant current pulse are output at different timings at 26, and the current value detected by the current detecting means 28 is constant as shown in FIG. 6C. Since the detection is performed in synchronization with the constant current pulse, the threshold value for determining each operation can be made constant.

Since the time is very short during one cycle of outputting the constant current pulse shown in FIG. 6G, the cleaning operator cannot confirm that the buzzer 54 is sounding.
Therefore, the sounding time of the buzzer 54 is set so that the cleaning worker can hear the sound of "beep".
As shown in FIG. 6F, for example, when the constant current pulse is output at, for example, 10 ms, the current of the current waveform of the buzzer 54 output by the pulse output unit 26 is output, for example, for 10 cycles, that is, A control command to be output for about 1/10 second is stored in the microcomputer 34 in advance.

Further, when the switch 61 is an operation button 14 for weak / strong setting is closed, the current value becomes the threshold value i ₅ following current value exceeds the threshold value i _4, FIG this current value 6
At the timing shown in (g), the current is detected by the current detecting means 28, and control is performed to reduce the input of the electric blower 21 to a weak output as shown in FIG. At this time, similar to the operation of the button 13 for automatic setting described above, the pulse output means 26
As shown in FIG. 6 (e), the current of the current waveform of the buzzer 54 is output during the pulse output of the constant current, and any one of the buttons 12, 13, 14, 16 of the operating means 29 is operated as shown in FIG. The buzzer 54 is sounded and notified.

Furthermore, when the button 14 for weak / strong setting is closed the switch 61 again is operated again, Similarly, the current value becomes the threshold value i ₅ following current value exceeds the threshold value i _4, the The current value is detected by the current detecting means 28, the input of the electric blower 21 is increased to a strong output as shown in FIG. 6A, and the buzzer 54 is output by the current of the current waveform of the buzzer 54 output from the pulse output means 26. Make 54 sound.

Further, when the switch 63 button 16 for power brush is operated is closed, the current value becomes current value exceeds the threshold value i _5, a timing indicating the current value shown in FIG. 6 (g) 6B, the power brush 22 is turned on as shown in FIG. 6B, and the buzzer 54 is sounded by the current of the current waveform of the buzzer 54 similarly output from the pulse output means 26. .

[0033] When the switch 57 is operated button 12 for stop setting is closed, the current value becomes the threshold value i ₃ following the current value exceeds the threshold value i _2, Fig this current value 6
At the timing shown in FIG. 6 (g), the current is detected by the current detecting means 28, the input of the electric blower 21 is stopped as shown in FIG. 6 (a), and the power brush 22 is turned off as shown in FIG. 6 (b). . Further, the buzzer 54 is sounded by the current having the current waveform of the buzzer 54 output from the pulse output means 26 in the same manner.

In the embodiment shown in FIGS. 1 to 6, when each of the buttons 12, 13, 14, 16 of the operation means 29 is operated, the buzzer 54 different from the constant current pulse is output by the pulse output means 26. Outputs the current of the current waveform to sound, and outputs the buzzer
Although it has been described that the sound is made to sound 54, only when any one of the buttons is operated, for example, the buzzer 54 is made to sound only when the button 13 for automatic setting is operated, or
A similar effect can be obtained by any of the notification methods, such as sounding when the control means 25 detects dust in accordance with a signal from a separately provided detection means.

In the above description, the pulse output means 26 outputs a constant current pulse at a pulse-like timing. However, the constant current pulse is always output, and each of the buttons 12, 13, and
When the buttons 14 and 16 are operated, instead of the output of the constant current pulse, a current having a current waveform that sounds the buzzer 54 different from the constant current pulse may be output for a predetermined time. Further, the description has been made in such a manner that a current having a different threshold value flows by operating each of the buttons 12, 13, 14, 16 of the operating means 29. However, a different value may be obtained by operating each of the buttons 12, 13, 14, 16 of the operating means 29. Such as outputting the number of pulses,
The method of recognizing the setting state by the operation of the operation means 29 may be any method. Each button 12 of the operation means 29,
The closing of each of the switches 57, 59, 61, 63 by the operation of 13, 14, 16 is performed, for example, while the cleaning operator is pressing each of the buttons 12, 13, 14, 16 or for a certain period of time, for example, pulse output. Either method may be used, such as electrically closing for at least one cycle of the constant current pulse.

Next, another embodiment of the vacuum cleaner of the present invention will be described with reference to FIGS.

In the embodiment shown in FIGS. 7 to 10, the light emitting diode 71 is connected in series to the sound generator 31 as shown in FIG. 9 in the circuit shown in FIG. 4 of the embodiment shown in FIGS.
As shown in FIG. 8, it is arranged on the manual operation unit 3 so that the cleaning operator can easily confirm the cleaning operation.

Next, the operation of the embodiment shown in FIGS. 7 to 10 will be described.

First, the pulse output means 26 shown in FIG.
As shown in (1), a constant current pulse is output. And
The current detection means 28 synchronizes with the constant current pulse of the pulse output means 26 and detects the current at a pulse-like timing shown in FIG. If the detected current is 0, the connection between the two-wire transmission lines 51 and 52 is open, so it is determined that the hose 2 is disconnected.

Further, when the current is detected by current detector 28 that exceeds the threshold value i ₅ of the hose connection shown in FIG. 10 (c), as shown in FIG. 10 (d), the hose 2 is connected,
It is determined that each of the buttons 12, 13, 14, 16 of the operation means 29 has not been operated.

Then, by connecting the hose 2, a current is supplied to the light emitting diode 71 provided in the hand operation unit 3. Therefore, the pulse output means shown in FIG.
Light emitting diode by constant current pulse output from 26
Reference numeral 71 emits light in a pulsed manner as shown in FIG.
Since the time is short during one cycle in which the constant current pulse is output as shown in FIG. 10G, the light emitting diode 71 is synchronized with the constant current pulse output as shown in FIG. Even if the light is emitted in pulses, the cleaning operator cannot confirm that the light emitting diode 71 is lit.

When the automatic setting button 13 is operated and the switch 59 is closed, the current value exceeds the threshold value i ₃ and becomes equal to or less than the threshold value i ₄ .
At the timing shown in (g), the current is detected by the current detecting means 28, and as shown in FIG. 10A, the input of the electric blower 21 is controlled in correspondence with the automatic output. That is, the control unit 25 controls the triac 23 to drive and control the electric blower 21.

At this time, the control means 25 determines that the button 13 for automatic setting has been operated, and as shown in FIG. 10 (f), the pulse output means 26 outputs a buzzer different from the constant current pulse.
A current having a current waveform for sounding the sound 54 is output, and the buzzer 54 sounds sound to indicate that any one of the buttons 12, 13, 14, and 16 of the operation means 29 has been operated, as shown in FIG. Notify.

In addition, the output of the current having a current waveform for generating a buzzer 54 different from the constant current pulse from the pulse output means 26 causes the light emitting diode 71 to output the buzzer 54 as shown in FIG. It synchronizes with the current and emits strong and weak light with the current waveform.

It should be noted that the light emission synchronized with the current of the buzzer 54 of the light-emitting diode 71 is generated when the cleaning worker can hear the sound of "beep", that is, when a constant current pulse is output at, for example, 10 ms. Since the current of the buzzer 54 is output for 10 cycles, for example, about 1/10 second, it is difficult for an operator to confirm that the intensity of light emission in about 1/10 second is almost lit.

Then, with the buzzer 54 sounding,
As shown in FIG. 10 (f), when a pulse-like constant current is output, as shown in FIG. 10 (e), the sound of the buzzer 54 stops, and as shown in FIG. The light emitting diode 71 emits light in a pulsed manner in synchronization with a pulse output of a constant current. Further, as shown in FIG. 10 (f), the current for generating the buzzer 54 and the constant current pulse are output at different timings by the pulse output means 26, and the detection of the current value by the current detection means 28 is performed as shown in FIG. As shown in (), since the detection is performed in synchronization with the constant current pulse in which the supplied current value is constant, the threshold value for determining each operation can be made constant.

Further, the control means 25 includes a pulse output means 26
After outputting the current of the current waveform that causes the buzzer 54 to sound, the constant current is continuously output as long as the other buttons 12, 14, 16 of the operating means 29 are not operated, that is, while the buttons are automatically controlled. With this output, the light emitting diode 71 is turned on as shown in FIG.
Light is emitted as shown in FIG. Then, the cleaning worker can confirm that the light emitting diode 71 has been turned on by the light emission of the light emitting diode 71 for a long time, and can recognize that the automatic setting has been performed by both the sounding of the buzzer 54 and the lighting of the light emitting diode 71. . The light emitting diode 71 emits a control command to output a constant current for a predetermined time from the pulse output means 26 to the microcomputer 34 in advance so that the cleaning worker can confirm that the light is on. It may be stored.

When the button 14 for weak / strong setting, the button 16 for power brush, and the button 12 for stop setting are operated, similarly to the embodiment shown in FIGS. When the switches 61 and 57 are closed, FIG.
A predetermined current value shown in (c) is detected by the current detecting means 28 at the timing shown in FIG. 10 (g), and the input control of the electric blower 21 and the on / off control of the power brush 22 are performed as shown in FIG. 10 (a). I do. Then, a current having the current waveform of the buzzer 54 is output by the pulse output means 26 during the output of the constant current pulse, and the buzzer sounds as shown in FIG. Make 54 sound and inform. When the current is output from the buzzer 54, the light emitting diode 71 also emits light in synchronization, but cannot be confirmed by the cleaning operator.

In the embodiment shown in FIGS. 7 to 10, when each of the buttons 12, 13, 14, 16 of the operation means 29 is operated, the buzzer 54 different from the constant current pulse is output by the pulse output means 26. The current of the current waveform to be sounded is output, the buzzer 54 is sounded, and when the button 13 for automatic setting is operated, the light emitting diode 71 is also turned on to notify the user. The light emitting diode 71 is turned on by operating each of the buttons 12, 13, 14, 16 and only when any of the buttons 12, 13, 14, 16 is operated, for example, the button 13 for automatic setting is operated. Buzzer only when
Any of the notification methods can be used, such as notifying the sound by sounding the light 54 or turning on the light emitting diode 71 by sounding the buzzer 54 when the clogging of dust is detected by a separately provided detecting means.

Also, as in the embodiment of FIGS. 1 to 6,
The method of recognizing the setting state by the operation of the operation means 29 may be any method.

[0051]

According to the electric vacuum cleaner of the present invention supplies the current control means from the pulse output means constant-current-pulse current
During the pulse output is supplied to the sound generating means the current including a current waveform for pronunciation Pronunciation means unlike constant current, detecting the current value from the current control means in synchronism with the current sensing means to a constant current pulse Thus, the current for generating the sounding means having a current waveform different from the output of the constant current pulse is output at a timing different from the constant current, so that with a simple configuration, regardless of the sounding of the sounding means, The current value set by the current control means can be accurately detected by the control means . Therefore, even if the sounding means is used, the current can be accurately detected, and a separate storage means or the like is not required, so that an increase in cost can be suppressed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a vacuum cleaner according to the present invention.

FIG. 2 is a perspective view showing an appearance configuration of the same.

FIG. 3 is a perspective view showing the same permission operation unit.

FIG. 4 is a circuit diagram showing a circuit configuration of the electric vacuum cleaner.

FIG. 5 is a current waveform diagram of a current waveform that generates a buzzer different from the current waveform of the constant current output from the pulse output unit.

FIG. 6 is a timing chart showing an operation of the electric vacuum cleaner. (A) Waveform diagram showing the input of the electric blower (b) Waveform diagram showing the input of the motor of the power brush (c) Waveform diagram showing the current detected by the current detecting means (d) Waveform diagram showing the connection of the hose ( e) Waveform diagram showing sounding state of buzzer of sounding means (f) Waveform diagram showing current output from pulse output means (g) Waveform diagram showing detection timing of detecting means

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

FIG. 8 is a perspective view showing the same permission operation unit.

FIG. 9 is a circuit diagram showing a circuit configuration of the electric vacuum cleaner.

FIG. 10 is a timing chart showing the operation of the electric vacuum cleaner. (A) Waveform diagram showing the input of the electric blower (b) Waveform diagram showing the input of the motor of the power brush (c) Waveform diagram showing the current detected by the current detecting means (d) Waveform diagram showing the connection of the hose ( e) Waveform diagram showing sounding state of buzzer of sounding means (f) Waveform diagram showing current direction (g) Waveform diagram showing detection timing of detecting means (h) Waveform diagram showing lighting state of light emitting diode

[Explanation of symbols]

 1 Vacuum cleaner body 21 Electric blower 25 Control means 26 Pulse output means 28 Current detection means 29 Operating means 30 Current control means 31 Sounding means

Claims (1)

(57) [Claims] 1. An electric blower, operating means for setting a state of the electric blower, and control means for controlling the electric blower to a state of the electric blower set by the operating means, the operating means comprising: A current control unit that varies a current value according to a set state; and a sound generation unit that can generate a sound according to the set state. The control unit supplies a constant current pulse to the current control unit.
The onset of the current including a current waveform to sound the sound generating means different from the constant current during the pulse output of the constant current pulse
Comprising a pulse output means for supplying the sound unit, electric vacuum cleaner according to claim and this you detect the current value from the synchronization with the current control means constant-current-pulse output by the pulse output unit.