JP2001128911A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of reducing generation of noise. SOLUTION: Switches S1-S3 and an LED 1 are mounted in an operating part 16B, and a control device 30 for controlling an electric fan 11 by the operation of the switches S1-S3 is mounted in a cleaner body 10 of this vacuum cleaner. The control device 30 has a reading means for outputting a pulse voltage with a prescribed cycle to the operating part 16B and reading a current running in the operating part 16B, and outputs a display voltage for informing the LED 1 of the set contents corresponding to the value of the current read by the reading means. The operating part 16B has a switch circuit 40 for switching a value of the current running by a pulse voltage according to the operation of the switches S1-S3. The control device 30 outputs a pulse voltage by a prescribed cycle, and when the reading means reads the operation of the switches S1-S3 by the pulse voltage, the control device 30 outputs a pulse voltage at lease once by a cycle shorter than a prescribed cycle after outputting the former pulse voltage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner provided with a plurality of operation switches on a hand operation portion of a hose.

[0002]

2. Description of the Related Art Conventionally, there has been known an electric vacuum cleaner provided with an operation switch and an indicator on a hand operation unit and a control device for controlling an electric blower in a main body of the cleaner.

In such a vacuum cleaner, an operation switch and a display are connected to a control device by two signal lines provided on a hose, and the operation of the operation switch is read by the control device, and the read operation contents are displayed on the display. Is displayed.

The operation switch is designed to allow current to flow in only one direction and set so that the resistance value changes in accordance with the operation. Is set to change.

The reading of the operation of the operation switch is performed by the control device passing a zero-cross pulse current to the operation switch via a signal line and detecting a current value flowing through the operation switch. This means that a zero-cross pulse current is output every 10 ms to ensure that the operation content of the operation switch is read even when the operation switch is operated and the operation switch is turned on for a short time. Then, when the same operation content is read three consecutive times by the pulse current, the read operation content is determined.

The control device outputs a voltage having a polarity opposite to that of the zero-cross pulse current to the signal line during a period in which the zero-cross pulse current is not flowing in accordance with the read operation content, and displays the operation content on the display. It is to let.

According to this vacuum cleaner, a zero-cross pulse current is supplied to the operation switch via the signal line, and a voltage having a polarity opposite to that of the pulse current is output to the signal line when the pulse current is not flowing. Therefore, there are many advantages such that only two signal lines need to be provided on the hose, and there is no need to provide a CPU or the like in the operation unit at hand.

[0008]

However, in such a vacuum cleaner, since a zero-cross pulse current flows every 10 msec to read the operation of the operation switch, pulse-like noise frequently occurs. Will happen. Furthermore, since a voltage having a polarity opposite to that of the pulse current is output to the signal line in order to display the operation content on the display, the direction of the current flowing in the signal line is frequently switched, so that the display on the display is being displayed. Causes significant generation of pulse-like noise. In addition, since the length of the hose is long, there is a problem that the influence of the noise on other devices is increased.

[0009] The present invention has been made in view of the above problems, and an object of the present invention is to provide a vacuum cleaner capable of reducing the generation of noise.

[0010]

In order to achieve the above object, according to the present invention, there is provided a hand operating unit provided in a hand operating unit, an electric blower, and the electric motor in accordance with setting contents of the hand operating unit. A cleaner body having a control device for controlling the blower, wherein the hand operation means and the control device are connected by a signal line provided on a hose interposed between the cleaner body and the hand operation unit, The control device is a vacuum cleaner having power supply means for supplying power to the hand operation means via the signal line, wherein the control device sends the read pulse to the hand operation means at predetermined intervals via the signal line. Reading means for outputting current and reading the current flowing in the hand operation means,
A notification voltage output unit that outputs a notification voltage having the same polarity as the read pulse during a period between the read pulse and the read pulse in order to notify a setting content corresponding to the current value read by the read unit, The hand operation means includes current switching means for causing a current to flow by a read pulse output from a power supply means and switching the current value according to the setting operation, and notification means for notifying a notification state by the notification voltage. Then, the reading pulse is output at predetermined intervals, and when the reading unit reads the setting state of the hand operation unit by the reading pulse, a second period of time shorter than the predetermined period follows the reading pulse. The read pulse is output at least once.

According to a second aspect of the present invention, one pulse is obtained from a read pulse when the setting state of the hand operation means is read to a last second read pulse output in a cycle shorter than the predetermined cycle. It is characterized by having done.

According to a third aspect of the present invention, there is provided a cleaner main body including a hand operating means provided in a hand operating section, an electric blower, and a control device for controlling the electric blower in accordance with the settings made by the hand operating means. The hand operation means and the control device are connected by a signal line provided on a hose interposed between the cleaner body and the hand operation unit, and the control device is connected to the hand operation means via the signal line. A vacuum cleaner having power supply means for supplying power, wherein the control device outputs a read pulse at predetermined intervals to the hand operation means via the signal line to read a current flowing through the hand operation means. Means for outputting a notification voltage having the same polarity as the read pulse during a period between the read pulse to notify the set content corresponding to the current value read by the read means. The hand operation means includes a current switching means for causing a current to flow according to a reading pulse output from a power supply means and switching the current value according to the setting operation, and notifies a notification state by the notification voltage. Notification means for outputting the read pulse a plurality of times at predetermined intervals.

According to a fourth aspect of the present invention, the plurality of read pulses output one by one are made into one continuous pulse.

According to a fifth aspect of the present invention, the notifying means is connected to the current switching means in parallel.

According to a sixth aspect of the present invention, there is provided a cleaner main body including a hand operating means provided in a hand operating section, an electric blower, and a control device for controlling the electric blower in accordance with the settings made by the hand operating means. And the control device and the control device are connected by a signal line provided on a hose interposed between the cleaner main body and the control device, and the control device is controlled by the control device via the signal line. An electric vacuum cleaner having a power supply unit for supplying power to the power supply unit, wherein the control unit outputs a read pulse having the same polarity as the power supply voltage from the power supply unit to the hand operation unit via a signal line at predetermined intervals. Reading means for reading a current flowing through the hand operating means when the reading operation is performed; and voltage switching means for switching a power supply voltage supplied by the power supply means based on the read current value after outputting the read pulse. The hand operating means has a current switching means for causing a current to flow according to a reading pulse output from a power supply means and for switching the current value in accordance with the setting operation, and a notification by a voltage switched by the voltage switching means. Notifying means for changing the state and notifying, and outputting the read pulse at predetermined intervals.When the reading means reads the setting state of the operating means by the read pulse, the read pulse is output following the read pulse. The second read pulse is output at least once in each cycle shorter than the predetermined cycle.

According to a seventh aspect of the present invention, one pulse is set from a read pulse when the setting state of the hand operation means is read to a last second read pulse output in a short cycle. I do.

According to a further aspect of the present invention, there is provided a cleaner body comprising: a hand operating means provided in a hand operating section; an electric blower; and a control device for controlling the electric blower in accordance with the settings made by the hand operating means. And the control device and the control device are connected by a signal line provided on a hose interposed between the cleaner main body and the control device, and the control device is controlled by the control device via the signal line. An electric vacuum cleaner having a power supply unit for supplying power to the power supply unit, wherein the control unit outputs a read pulse having the same polarity as the power supply voltage from the power supply unit to the hand operation unit via a signal line at predetermined intervals. Reading means for reading a current flowing through the hand operating means when the reading operation is performed; and voltage switching means for switching a power supply voltage supplied by the power supply means based on the read current value after outputting the read pulse. The hand operating means has a current switching means for causing a current to flow according to a reading pulse output from a power supply means and for switching the current value in accordance with the setting operation, and a notification by a voltage switched by the voltage switching means. And a notifying unit for changing the state and notifying, and outputting the read pulse a plurality of times at predetermined intervals.

According to a ninth aspect of the present invention, the plurality of read pulses output one by one are made into one continuous pulse.

According to a tenth aspect of the present invention, the notification means is a display device.

An eleventh aspect of the present invention is the electric vacuum cleaner, wherein the notification means is a sound generator.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vacuum cleaner provided with an alarm device according to the present invention will be described below with reference to the drawings. [First Embodiment] In FIG. 1, reference numeral 10 denotes a vacuum cleaner main body, in which a dust collecting chamber (not shown) and an electric blower (drive means) 11 for making the dust collecting chamber a negative pressure are provided. Is provided. Further, a control device 30 (see FIG. 2) for controlling the electric blower 11 is provided in the cleaner body 10.

Reference numeral 15 denotes a hose having one end detachably connected to the vacuum cleaner main body 10, and a hand operation pipe 16 provided at the other end of the hose 15. 2 for hose 15
Two signal lines L1 and L2 (see FIG. 2) are provided.

The hand operation pipe 16 is provided with a handle 16A and a hand operation unit 16B. The hand operation unit 16B has an off switch S1 for turning off the power of the electric blower 11, and an automatic power supply for the electric blower 11. An automatic setting switch S2 for setting, a manual setting switch S3 for setting the strength of the power of the electric blower 11, and a display LED1 which is a light emitting element that emits light when the automatic setting is set by the automatic setting switch S2 (notifying means, Display means). Each time the manual setting switch S3 is pressed, "strong" and "weak" are set alternately.

An extension tube 17 is detachably connected to the hand operation tube 16, and a suction port 20 is detachably connected to a tip end of the extension tube 17.

FIG. 2 is a block diagram showing a configuration of a control system of the electric vacuum cleaner. In FIG. 2, a control device 30 controls the input of the electric blower 11 by performing phase control of the triac 31. The control device 30 includes a CPU and the like.

The control unit 30 reads a read timing pulse P1 having a pulse width of 1 ms every 100 ms cycle (predetermined cycle).
Is output from the output port U1, and the current flowing through the input port U2 is read by the read timing pulse P1.
It is determined whether S3 has been operated.

The control device 30 includes switches S1 to S3
Is operated, read timing pulses P2 and P3 (see FIG. 4) having a pulse width of 1 ms are output every 10 ms after the read timing pulse P1. The control device 30
Is the display voltage (notification voltage) following the read timing pulse P3 when it is determined that the switch S2 has been operated.
V (the same voltage as the read timing pulse P1) is continuously output. Then, the control device 30 supplies power to a hand operation unit 45 described later.
Reading means 30 for reading the current flowing through E and the hand operating means
R and a notification voltage output means 30H for outputting a notification voltage are built in.

In FIG. 2, E is a commercial AC power supply, and 40 is a switch circuit (current switching means) provided in the hand operation unit 16B. To this switch circuit 40, a series circuit of an indicator LED1 and a resistor R4 is connected in parallel. ing. The switch circuit 40, the indicator LED1, and the resistor R4 constitute a hand operation unit 45.

The switch circuit 40 has switches S1 to S3 and resistors R1 to R3 connected in series to the switches S1 to S3. These switches S1 to S3 and resistors R1 to R3 (R1 <R2) are connected in series. <R3 <R4) are connected in parallel. When the hose 15 is connected to the cleaner body 10, as shown in FIG. 3, the current I1 (> threshold Ia) is changed by the reading timing pulse P1 to the resistance R4 and the indicator LE.
Flow to D1. At this time, the display LED1 is turned on for 1 ms, but cannot be recognized by the human eye for a short time, and the display LED1 is recognized as being turned off.

When the switch S1 is turned on, the current I2 (threshold value Ib> I1) flows through the switch circuit 40 by the read timing pulse P1, and when the switch S2 is turned on, the current I3 (threshold value Ic>) is obtained by the read timing pulse P1. I2)
Flows into the switch circuit 40, and when the switch S3 is turned on, the current I4 (threshold Id>
I3) flows to the switch circuit 40.

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

When a plug of a power cord (not shown) is inserted into an outlet, a read timing pulse P1 is output from the output port U1 of the control device 30 at every cycle T1 (100 ms) as shown in FIG. When the hose 15 is connected to the cleaner body 10, the read timing pulse P1 causes a current I1 to flow through the signal line L1 to the resistor R4 of the operation unit 16B and the display LED1. That is, the input port U
2, the current I1 flows. The control device 30 has an input port U
The current I1 flowing through 2 is read to recognize that the hose 15 has been connected from the current I1.

When the switch S2 is turned on (time t1), the resistor R2 is connected to the signal lines L1 and L2, so that the input port U2 of the control device 30 receives the read timing pulse P1 as shown in FIG. The current I3 flows. Control device 3
0 reads the current I3, determines that the switch S2 has been turned on, and outputs read timing pulses P2 and P3 every 10 ms after the read timing pulse P1. When the current I3 flows through the input port U2 of the control device 30 by the read timing pulses P2 and P3, the control device 30 determines that the switch S2 is turned on,
The power of the electric blower 11 is automatically set and driven (time t2).

The control device 30 continues to output the display voltage V from the output port U1 after the read timing pulse P3 (time t2). The display voltage V is applied to the switch circuit 40, and the resistor R4 and the display LES1 are applied. And the indicator LED1 keeps lighting. By the lighting of the LED 1, it is notified that the power of the electric blower 11 is automatically set.

Further, the control device 30 controls the output port U1
Also, while the display voltage V is being output from, the current flowing to the input port U2 is read every 100 ms.

When the switch S1 is turned on, as shown in FIG. 5, similarly to the above, the control device 30 causes the read timing pulses P2 and P3 to be transmitted every 10 ms after the read timing pulse P1 (time t5). Then, the current I1 flowing to the input port U2 is read to determine that the switch S1 is turned on, and the electric blower 11 is stopped, and the output of the display voltage V from the output port U1 is stopped (time t6).
Thereafter, the control device 30 outputs a read timing pulse P1 from the output port U1 every 100 ms.

When the switch S3 is turned on, the control device 30 outputs read timing pulses P2 and P3 every 10 ms after the read timing pulse P1 and reads the current I3 flowing through the input port U2 in the same manner as described above. To confirm that the switch S3 has been turned on, and the electric blower 11
Is set to "strong" or "weak" to drive. In this case, the display voltage V is not output from the output port U1 after the read timing pulse P3. Therefore, the indicator LED1 is not turned on.

According to this embodiment, the switches S1 to S3
Timing pulse P1 for reading the operation contents of
Is output every 100 msec, so that the number of output times of the read timing pulse P1 is greatly reduced as compared with the output of every 10 msec, and the generation of pulse noise is extremely small. Become. Further, in order to determine the reading, the reading timing pulses P2 and P3 are set to 10 m.
Since only two signals are output every second, the occurrence of pulse-like noise when confirming reading is reduced, and
Since the reading is determined by the three reading timing pulses P1, P2, P3, the reliability of the reading is improved.

Since the operation of the switch circuit 40 is read and the LED1 is turned on without changing the polarity of the output voltage of the output port U1, the occurrence of noise is further reduced, and the polarity is changed. Due to the absence, the circuit configurations of the control device 30 and the operation unit 16B are extremely simple. [Second Embodiment] FIG. 6 shows a time chart of the second embodiment. In the second embodiment, a read timing pulse P5 having a pulse width of 10 ms is output from the output port U1 every 100 ms, and when the operation of the switches S1 to S3 is read (time t8), the read operation having a pulse width of 30 ms is performed. The timing pulse P6 is output. The control device 30 reads the current flowing through the input port U2 every 10 ms while outputting the read timing pulse P6. That is, the read timing pulse P6
While the is output, the current flowing through the input port U2 is read three times.

When the reading is determined, for example, when the switch S2 is turned on, the control device 30 outputs the display voltage V from the output port U1 after the reading timing pulse P6 (time t9). ). When the switch S3 is turned on, the display voltage V is not output as in the first embodiment.

FIG. 7 shows a time chart when the switch S1 is operated. In FIG. 7, at time t
The switch S1 is turned on at 10 and the input port U2 at time t11.
When the controller 30 determines that the switch S1 has been operated, the controller 30 stops outputting the display voltage V, and outputs a read timing pulse P6 from the output port U1 (time t11). Input port U2
Is read every 10 ms. By this reading, when the control device 30 determines that the switch S1 has been operated, it does not output the display voltage V from the output port U1. Then, the indicator LED1 is turned off (time t1).
2).

According to the second embodiment, since reading is performed three times with one reading timing pulse P6, the occurrence of pulse noise is further reduced. Third Embodiment FIGS. 8 and 9 show three read timing pulses P7 to P9 output every 100 ms. The read timing pulses P8 and P9 are output at intervals of 10 ms. The width of each pulse P7 to P9 is 1 ms. In the third embodiment, the current flowing through the input port U2 is read three times every 100 ms, and the other operations are the same as those in the first embodiment, and therefore the description thereof is omitted.

According to the third embodiment, since three read timing pulses P7 to P9 are output every 100 ms, two read timing pulses P2 and P3 are read when the operation of the switches S1 to S3 is read. The output control of the read timing pulses P7 to P9 is easier to control than the one that outputs.

FIGS. 10 and 11 show a configuration in which one read timing pulse P10 having a pulse width of 30 ms is output every 100 ms instead of the three read timing pulses P7 to P9. Also in this case, the current flowing through the input port U2 is read three times every 10 ms while the read timing pulse P10 is being output.

The one shown in FIGS.
Since only one read timing pulse P10 is output, the output control of the read timing pulse P10 is easier than that shown in FIG. 6, and the generation of noise is further reduced. Fourth Embodiment FIG. 12 shows the configuration of a control system of an electric vacuum cleaner according to a fourth embodiment. In the fourth embodiment, a buzzer (notifying means) 41 and a resistor R5 are connected in parallel with the switch circuit 40. Then, the switch circuit 40
The buzzer 41 and the resistor R5 constitute a hand operation means 46.

The control device 30 shown in FIG. 12 outputs a read timing pulse P1 having a pulse width of 1 ms from the output port U1 at every 100 ms period as in the first embodiment, and the read timing pulse P1 causes the input port U2 To determine which switch S1 to S3 has been operated. If it is determined that the switches S1 to S3 have been operated, a period of 10 m
The read timing pulses P2 and P3 are output every s, and the switches S1 to S3 are output by the read timing pulses P2 and P3.
Is determined, the control device 30 outputs a 2 KHz buzzer signal (notification voltage) G from the output port U1 for 10 to 100 ms after the output of the read timing pulse P3. The control device 30 has a notification voltage output unit 30M that outputs the buzzer signal G.

In the fourth embodiment, as shown in FIG. 3, when the switches S1 to S3 are not turned on, the read timing pulse P1 causes the current I1 to flow through the input port U2, and when the switches S1 to S3 are turned on, the read operation is started. The currents I2, I3, and I4 flow through the input port U2 by the timing pulse P1.

According to the fourth embodiment, as shown in FIG. 13, when it is determined that the switches S1 to S3 have been operated, the control device 30 outputs the read timing pulse P3 (time t15 to t18). Since the buzzer signal G is output from the output port U1, the buzzer 41 generates a sound in response to the buzzer signal G to notify that the switches S1 to S3 have been operated. Further, the control device 30 controls the electric blower 11 in accordance with the operation of the switches S1 to S3.

In the fourth embodiment, as in the first embodiment, the generation of pulse noise is very small.
In addition, since only two read timing pulses P2 and P3 are output every 10 ms in order to determine the reading, the generation of pulse noise when determining the reading is small, and the three Read timing pulse P1,
Since the reading is determined by P2 and P3, the reliability of the reading is also improved. [Fifth Embodiment] FIGS. 14 and 15 show a fifth embodiment. In FIGS. 14 and 15, LE
D1 is a display that emits light when the automatic setting is set by the automatic setting switch S2 as in the first embodiment.
LED2 is a display (notifying means, light emitting element) which emits light when the intensity is set by the manual setting switch S3.

Reference numeral 50 denotes a control device provided in the cleaner main body 10, and this control device 50 has the same configuration as the first embodiment.
In addition to outputting the read timing pulse P1 of the voltage Va and the read timing pulses P2 and P3 from the output port U1 every 00 ms cycle, the display voltage Vb,
Vc is output from the output port U1. That is, the control device 50 outputs the display voltage Vb (> Va) when it is determined that the switch S2 has been operated, and outputs the display voltage Vc (> Vb) when it has been determined that the switch S3 has been operated. The control device 60 has a voltage switching means 50K for switching the display voltages Va to Vc output from the output port U1. 50E is a power supply means, and 50R is a reading means.

Reference numeral 60 denotes a display circuit provided in the hand operation unit 16B. The display circuit 60 includes two light emitting diodes L
ED1 and LED2, a transistor TR2 that turns on the light emitting diode LED1 when turned on, a transistor TR4 that turns on the light emitting diode LED3 when turned on, and a transistor TR1 that turns on when the voltage Va of the read timing pulse P1 is applied to the signal line L1. A zener diode (constant voltage means) ZD1 that turns on when the display voltage Vb is applied to the signal line L1 to turn on TR2, and a zener diode (constant voltage) that turns on and turns on TR4 when the display voltage Vc is applied to the signal line L1. Voltage means) ZD2.
When TR4 turns on, TR3 turns on and LED2 turns on. Then, the switch circuit 40 and the display circuit 60
This constitutes the hand operating means 62.

Next, the operation of the vacuum cleaner according to the fifth embodiment will be described.

When a plug of a power cord (not shown) is plugged into an outlet, a read timing pulse P1 is output from the output port U1 of the control device 50 every 100 ms as shown in FIG.
Is output. The read timing pulse P1 is applied to the display circuit 50 of the operation unit 16B via the signal line L1 and TR1 is turned on, and the output port U1 of the control device 50 is connected to the input port U2 via the transistor TR1 and the resistor R4 of the switch circuit 40. An electric current flows through. The controller 50 reads the current flowing through the input port U2.

When none of the operation switches S1 to S3 is operated, a current I1 (see FIG. 3) flows through the input port U2, and from this current I1, the control device 50
5 is connected to the cleaner body 10, and it is determined that none of the operation switches S1 to S3 has been operated.

As shown in FIG. 16, when the switch S3 is turned on (time t20), the resistor R2 is connected in parallel with the resistor R4, so that the input port U2 of the control device 50 receives the current I4 by the output of the read timing pulse P1. (See FIG. 3) flows. The control device 50 reads this current I4, determines that the switch S3 has been turned on, and after this read timing pulse P1, reads the read timing pulse P every 10 ms.
2. Output P3. When the current I4 flows through the input port U2 of the control device 50 due to the read timing pulses P2 and P3, the control device 50 determines that the switch S3 is turned on, and changes the power of the electric blower 11 to "strong" or "weak". "
And set to drive.

The control device 50 continues to output the display voltage Vc from the output port U1 after the read timing pulse P3 (time t21), and the display circuit 60 uses the display voltage Vc.
, The Zener diode ZD2 turns on and TR4 and TR3 turn on, and the display LED2 lights up when this TR3 turns on. By the lighting of the LED 2, it is notified that the power of the electric blower 11 is manually set. The Zener diode ZD1 is turned on by this display voltage Vc, and TR
2 is turned on, but due to the voltage suppression effect of the diode D2, L
ED1 does not light.

Display voltage Vc output from output port U1
Is not output when the read timing pulses P1 and P3 every 100 ms are output from the output port U1, and when the read timing pulses P1 and P3 are output, the voltage of the read timing pulses P1 and P3 is Va. Due to this, the LED 2 is turned off, but the time for which the LED 2 is turned off is 1 ms, so that the eyes of the human eyes recognize that the LED 2 is continuously turned on.

When the switch S2 is turned on, the control device 50 determines that the switch S3 has been turned on and automatically sets the power of the electric blower 11 to drive the same, as described above. The control device 50 continues to output the display voltage Vb from the output port U1 after the read timing pulse P3, and the display voltage Vb turns on the Zener diode ZD1 of the display circuit 60 to turn on TR2, thereby turning on TR2. Causes the display LED1 to light up. By the lighting of the LED 1, it is notified that the power of the electric blower 11 is automatically set.

When the LED 2 is turned on, that is, when the electric blower 11 is driven at “strong” or “weak”, FIG.
When the switch S1 is turned on at time t23 shown in FIG.
Are connected in parallel with the resistor R4, the current I1 (see FIG. 3) flows through the input port U2 of the control device 50 by the output of the read timing pulse P1. The control device 50 reads the current I1 and determines that the switch S1 has been turned on.
After the read timing pulse P1, read timing pulses P2 and P3 are output every 10 ms. When the current I1 flows through the input port U2 of the control device 50 due to the read timing pulses P2 and P3, the control device 50 determines that the switch S1 is turned on, stops driving the electric blower 11, and outputs the output port. The output of the display voltage Vc from U1 is stopped (time t24). When the output of the display voltage Vc is stopped, the LED 2 is turned off.

The control unit 50 outputs the read timing pulse P1 every 100 ms from the output port U1 after the output of the read timing pulse P3.

According to the fifth embodiment, as in the first embodiment, the generation of pulse noise is very small, and the read timing pulses P2 and P3 are set in order to determine the reading. Since only two signals are output every 10 ms, there is little occurrence of pulse-like noise when determining the reading, and since the reading is determined by three reading timing pulses P1, P2, and P3, the reliability of the reading is determined. The performance is improved. Sixth Embodiment FIGS. 18 and 19 are time charts of a sixth embodiment. In the sixth embodiment, 100
When a read timing pulse P5 having a pulse width of 10 ms and a voltage of Va is output from the output port U1 every cycle of ms and the operation of the switches S1 to S3 is read (time t25),
A read timing pulse P6 having a pulse width of 30 ms and a voltage of Va is output. Control device 50
Reads the current flowing through the input port U2 every 10 ms while outputting the read timing pulse P6.
That is, while the read timing pulse P6 is output, the current flowing through the input port U2 is read three times.

When it is determined, for example, that the switch S3 has been turned on by the read timing pulse P6, the control device 50 sets the power of the electric blower 11 to "strong" or "weak" and drives it. After the pulse P6, the display voltage Vc is output from the output port U1 (time t26). With this display voltage Vc, the fifth
The LED 2 is turned on in the same manner as in the embodiment.

Display voltage Vc output from output port U1
Is not output when the read timing pulse P5 every 100 ms is output from the output port U1, and when the read timing pulse P5 is output, the voltage of the read timing pulse P5 is Va, so that the LED2 is turned off. But the light is off for 10ms
Therefore, human eyes recognize that the LED 2 is continuously lit.

When the switch S2 is turned on, the control device 50 determines that the switch S3 is turned on and automatically sets the power of the electric blower 11 to drive the same, as described above. The control device 50 outputs the display voltage Vb from the output port U1 after the read timing pulse P6, and the display voltage Vb turns on the Zener diode ZD1 of the display circuit 60 to turn on TR2. The indicator LED1 lights up. By the lighting of the LED 1, it is notified that the power of the electric blower 11 is automatically set.

While the LED 2 is being turned on, that is, when the electric blower 11 is driven at “strong” or “weak”,
When the switch S1 is turned on at time t28 shown in FIG.
Are connected in parallel to the resistor R4, the current I1 (see FIG. 3) flows through the input port U2 of the control device 50 by the output of the read timing pulse P5. The control device 50 reads the current I1 and determines that the switch S1 has been turned on.
After the read timing pulse P1, a read timing pulse P6 is output (time t29). When the current I1 flows through the input port U2 of the control device 50 due to the read timing pulse P6, the control device 50 determines that the switch S1 has been turned on, stops driving the electric blower 11, and outputs the signal from the output port U1. The output of the display voltage Vc is stopped (time t30). When the output of the display voltage Vc is stopped, the LED 2 is turned off.

The controller 50 outputs the read timing pulse P5 every 100 ms from the output port U1 after the output of the read timing pulse P6.

According to the sixth embodiment, since reading is performed three times with one reading timing pulse P6, the generation of pulse noise is further reduced. Seventh Embodiment FIGS. 20 and 21 show three read timing pulses P7 to P9 output every 100 ms. The read timing pulses P8 and P9 are 10 ms.
Output at intervals. The width of each pulse P7 to P9 is 1 ms. In the seventh embodiment, the input port U is set every 100 ms.
The current flowing through 2 is read three times at a time.
Other operations are the same as those of the fifth embodiment, and the description thereof is omitted.

According to the seventh embodiment, three read timing pulses P7 to P9 are output every 100 ms. Therefore, when the operation of the switches S1 to S3 is read, two read timing pulses P2 and P3 are read. Is easier to control than the one that outputs.

FIGS. 22 and 23 show a configuration in which one read timing pulse P10 having a pulse width of 30 ms is output every 100 ms instead of the three read timing pulses P7 to P9. Also in this case, the current flowing through the input port U2 is read three times every 10 ms while the read timing pulse P10 is being output.

FIG. 22 and FIG.
Since only one read timing pulse P10 is output, the control is easier than that shown in FIG. [Eighth Embodiment] FIG. 24 shows an eighth embodiment. In the eighth embodiment, buzzers B1 and B2 are connected instead of the indicators LED1 and LED2 shown in FIG.
A sound is generated each time the switches S2 and S3 are pressed.

The control device 50 of the eighth embodiment is similar to that of FIG.
As shown in FIG. 5, when it is determined that the switch S2 has been operated, a pulse P15 having a voltage of V2 (> V1) and a pulse width of 9 ms is continuously output after the operation timing pulse P1, and this is repeated five times. When it is determined that the switch S3 has been operated, a pulse P16 having a voltage of V3 (> V2) and a pulse width of 9 ms is output after the operation timing pulse P1, and this is repeated five times. Pulse P15, P16
Is composed of a signal wave having a frequency of 2 KHz, and the buzzers B1 and B2 are sounded by the signal wave.

In the eighth embodiment, as shown in FIG. 26, when the switch S2 is turned on (time t35), the control device 30 controls the switch S2 in the same manner as in the fifth embodiment.
Is turned on (time t36), and the output port U
Pulses P1 to P15 are output after the operation timing pulse P1. This is repeated five times. The buzzer B1 sounds by this pulse P15. Similarly, when the switch S3 is turned on (time t37), the control device 50 determines that the switch S3 is turned on (time t38) in the same manner as in the fifth embodiment, and outputs a pulse P16 from the output port U1. Is output after the operation timing pulse P1. This is repeated five times. This pulse P16
Buzzer B2 sounds.

Since the voltage V3 of the pulse P16 is higher than the voltage V2 of the pulse P15, the buzzer B1
A loud sound is generated. The difference in the loudness of the sound indicates which switch S2 or S3 has been turned on.

In the eighth embodiment, when the switch S1 is pressed, the buzzers B1 and B2 do not sound, but when the switch S1 is pressed, the pulse P15 or P16 is output from the output port U1 in the same manner as described above. Let buzzer B
1, B2 may be sounded.

Each of the pulses P15 and P16 is output five times. If the pulses P15 and P16 are output one to ten times, the sound is generated only when the switches S1 to S3 are pressed without delay. hear.

[0076]

As described above, according to the first aspect of the present invention, the hand-operated means provided in the hand-operated part, the electric blower, and the electric blower are controlled in accordance with the settings made by the hand-operated means. And a control device, wherein the hand operation means and the control device are connected by a signal line provided in a hose interposed between the cleaner body and the hand operation unit, and the control device is A vacuum cleaner having a power supply unit for supplying power to the hand operation unit via the signal line, wherein the control unit outputs a read pulse to the hand operation unit via the signal line at predetermined intervals. A reading means for reading a current flowing through the hand operating means, and a notification voltage having the same polarity as the reading pulse for notifying the setting content corresponding to the current value read by the reading means between the reading pulse and the reading pulse. A notification voltage output unit that outputs the current signal during a period, wherein the hand operation unit is a current switching unit that causes a current to flow by a reading pulse output from a power supply unit and switches the current value according to the setting operation; Notification means for notifying a notification state by a notification voltage, and outputting the read pulse at predetermined intervals.When the reading means reads the setting state of the hand operation means by the read pulse, the read pulse is output. Subsequently, the second read pulse having a cycle shorter than the predetermined cycle is output at least once, so that generation of pulse noise is very small. In addition, since the reading pulse is output at least once in order to determine the reading, the generation of pulse noise when determining the reading is small.

Further, since the reading pulse for reading the setting contents of the hand operation means and the notification voltage for notifying the setting contents have the same polarity, noise and noise can be obtained even if reading and notifying are performed alternately. Occurrence is small and the polarity is not changed, so that the circuit configurations of the control device and the hand-operated means are extremely simple.

According to the second aspect of the present invention, the period from the reading pulse when the setting state of the hand operation means is read to the last second reading pulse output in a cycle shorter than the predetermined cycle is made into one pulse. Therefore, generation of pulse noise is further reduced.

According to the third aspect of the present invention, a vacuum cleaner having a hand operating means provided in a hand operating section, an electric blower, and a control device for controlling the electric blower in accordance with the settings made by the hand operating means. A main body, wherein the hand operation means and the control device are connected by a signal line provided on a hose interposed between the cleaner main body and the hand operation unit, and the control device is operated by hand via the signal line. A vacuum cleaner having a power supply means for supplying power to the means, wherein the control device outputs a reading pulse at predetermined intervals to the hand operation means via the signal line, and controls a current flowing through the hand operation means. Reading means for reading, and a notification voltage for outputting a notification voltage having the same polarity as the read pulse during a period between the read pulses in order to notify a setting content corresponding to the current value read by the read means. Power means, a current switching means for causing a current to flow by a reading pulse output from a power supply means and switching the current value according to the setting operation, and a notification state by the notification voltage. It has an informing means for informing and outputs the read pulse a plurality of times at predetermined intervals, so that the output control of the read pulse is simplified.

According to the fourth aspect of the present invention, the read pulses output by a plurality are converted into one continuous pulse, so that the output of the read timing pulse can be easily controlled.
The generation of noise is further reduced.

According to the fifth aspect of the present invention, since the notifying means is connected in parallel to the current switching means, the notifying means can be used for notifying the attachment / detachment of the hose. The need for a separate hose notification means for notifying the user can be eliminated.

According to the sixth aspect of the present invention, there is provided a cleaning device comprising a hand operating means provided in a hand operating section, an electric blower, and a control device for controlling the electric blower in accordance with the settings made by the hand operating means. A cleaner main body, wherein the hand operation means and the control device are connected by a signal line provided on a hose interposed between the cleaner body and the hand operation means, and the control device is at hand via the signal line. An electric vacuum cleaner having a power supply unit for supplying power to an operation unit, wherein the control unit supplies a read pulse having the same polarity as the power supply voltage to the hand operation unit via a signal line at predetermined intervals. Reading means for reading a current flowing through the hand-operating means when output from the controller, and voltage switching for switching a power supply voltage supplied by the power supply means based on the read current value after outputting the reading pulse And a stage, the hand operating means,
Current switching means for causing a current to flow by a read pulse output from the power supply means and switching the current value in accordance with the setting operation; and notification means for changing the notification state according to the voltage switched by the voltage switching means and notifying. Having the read pulse output at every predetermined cycle, and when the reading means reads the setting state of the operating means by the read pulse, the read pulse is output at every cycle shorter than the predetermined cycle following the read pulse. Since the two read pulses are output at least once, the generation of pulse noise is very small. In addition, since the reading pulse is output at least once in order to determine the reading, the generation of pulse noise when determining the reading is small.

Further, since the notification means changes the notification state according to the voltage switched by the voltage switching means and performs notification, the circuit configuration of the notification means is very simple. Further, since the reading pulse for reading the setting content of the hand operation means and the notification voltage for notifying the setting content have the same polarity, even if the reading and the notification are alternately performed, the occurrence of noise is small. Since the polarity is not changed, the circuit configuration of the control device and the operation means is extremely simple.

According to the seventh aspect of the present invention, the period from the reading pulse when the setting state of the hand operation means is read to the last second reading pulse output in a cycle shorter than the predetermined cycle is made into one pulse. Therefore, generation of pulse noise is further reduced.

According to the invention of claim 8, a cleaning device comprising a hand operation means provided in a hand operation section, an electric blower, and a control device for controlling the electric blower in accordance with the settings made by the hand operation means. A cleaner main body, wherein the hand operation means and the control device are connected by a signal line provided on a hose interposed between the cleaner body and the hand operation means, and the control device is at hand via the signal line. An electric vacuum cleaner having a power supply unit for supplying power to an operation unit, wherein the control unit supplies a read pulse having the same polarity as the power supply voltage to the hand operation unit via a signal line at predetermined intervals. Reading means for reading a current flowing through the hand-operating means when output from the controller, and voltage switching for switching a power supply voltage supplied by the power supply means based on the read current value after outputting the reading pulse And a stage, the hand operating means,
Current switching means for causing a current to flow by a read pulse output from the power supply means and switching the current value in accordance with the setting operation; and notification means for changing the notification state according to the voltage switched by the voltage switching means and notifying. Since the read pulse is output a plurality of times at predetermined intervals, output control of the read pulse is simplified.

According to the ninth aspect of the present invention, since a plurality of read pulses output one by one are converted into one continuous pulse, it is easy to control the output of the read timing pulse.
The generation of noise is further reduced.

According to the tenth aspect of the present invention, since the notification means is a display device, it is possible to visually notify the setting state of the hand operation means.

According to the eleventh aspect of the present invention, since the notifying means is a sound generating device, the setting state of the hand operating means can be notified by sound.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of an electric vacuum cleaner according to the present invention.

FIG. 2 is a circuit diagram showing a configuration of a control system of the electric vacuum cleaner shown in FIG.

FIG. 3 is a graph showing a current flowing through a switch circuit.

FIG. 4 is a time chart showing an operation of the electric vacuum cleaner.

FIG. 5 is a time chart showing the operation of the electric vacuum cleaner.

FIG. 6 is a time chart illustrating an operation of the electric vacuum cleaner according to the second embodiment.

FIG. 7 is a time chart illustrating an operation of the electric vacuum cleaner according to the second embodiment.

FIG. 8 is a time chart illustrating an operation of the electric vacuum cleaner according to the third embodiment.

FIG. 9 is a time chart illustrating an operation of the electric vacuum cleaner according to the third embodiment.

FIG. 10 is a time chart showing an operation of the electric vacuum cleaner of another example of the third embodiment.

FIG. 11 is a time chart showing an operation of the electric vacuum cleaner of another example of the third embodiment.

FIG. 12 is a circuit diagram showing a configuration of a control system of the electric vacuum cleaner according to the fourth embodiment.

FIG. 13 is a time chart showing the operation of the electric vacuum cleaner according to the fourth embodiment.

FIG. 14 is a perspective view showing an appearance of an electric vacuum cleaner according to a fifth embodiment.

FIG. 15 is a circuit diagram showing a configuration of a control system of the electric vacuum cleaner according to a fifth embodiment.

FIG. 16 is a time chart showing the operation of the electric vacuum cleaner according to the fifth embodiment.

FIG. 17 is a time chart showing the operation of the electric vacuum cleaner according to the fifth embodiment.

FIG. 18 is a time chart showing the operation of the electric vacuum cleaner according to the sixth embodiment.

FIG. 19 is a time chart showing the operation of the electric vacuum cleaner according to the sixth embodiment.

FIG. 20 is a time chart illustrating the operation of the electric vacuum cleaner according to the seventh embodiment.

FIG. 21 is a time chart showing the operation of the electric vacuum cleaner according to the seventh embodiment.

FIG. 22 is a time chart showing the operation of the electric vacuum cleaner in another example of the seventh embodiment.

FIG. 23 is a time chart showing the operation of the electric vacuum cleaner in another example of the seventh embodiment.

FIG. 24 is a circuit diagram showing a configuration of a control system of the electric vacuum cleaner according to the eighth embodiment.

FIG. 25 is an explanatory diagram showing the timing of pulses output from the output port of the control device.

FIG. 26 is a time chart showing the operation of the electric vacuum cleaner in another example of the eighth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vacuum cleaner main body 11 Electric blower 16B Hand operation part 30 Control apparatus 40 Switch circuit (current switching means) S1-S3 switch LED1 Display (notification means)

Claims (11)

[Claims] 1. A cleaning device comprising: a hand operating means provided in a hand operating unit; an electric blower; and a control device for controlling the electric blower in accordance with settings made by the hand operating means. The operation means and the control device are connected by a signal line provided on a hose interposed between the cleaner body and the hand operation unit, and the control device supplies power to the hand operation means via the signal line. A vacuum cleaner having a supply unit, wherein the control unit outputs a reading pulse at predetermined intervals to the hand operation unit via the signal line to read a current flowing through the hand operation unit, A notification voltage output unit that outputs a notification voltage having the same polarity as the read pulse during a period between the read pulse and the read pulse in order to notify a setting content corresponding to the current value read by the unit; The original operating means has a current switching means for causing a current to flow according to a read pulse output from the power supply means and switching the current value according to the setting operation, and a notifying means for notifying a notification state by the notification voltage. The reading pulse is output at predetermined intervals, and when the reading unit reads the setting state of the hand operation unit by the reading pulse, the second reading of a period shorter than the predetermined period following the reading pulse is performed. A vacuum cleaner which outputs a pulse at least once. 2. The method according to claim 1, wherein a pulse from a reading pulse when the setting state of the hand operation means is read to a last second reading pulse output in a cycle shorter than the predetermined cycle is set as one pulse. The vacuum cleaner according to claim 1, wherein 3. The cleaning device according to claim 1, further comprising: a hand operating means provided in a hand operation unit; an electric blower; and a cleaner main body having a control device for controlling the electric blower in accordance with setting contents of the hand operating means. The operation means and the control device are connected by a signal line provided on a hose interposed between the cleaner body and the hand operation unit, and the control device supplies power to the hand operation means via the signal line. A vacuum cleaner having a supply unit, wherein the control unit outputs a reading pulse at predetermined intervals to the hand operation unit via the signal line to read a current flowing through the hand operation unit, A notification voltage output unit that outputs a notification voltage having the same polarity as the read pulse during a period between the read pulse and the read pulse in order to notify a setting content corresponding to the current value read by the unit; The original operating means has a current switching means for causing a current to flow according to a read pulse output from the power supply means and switching the current value according to the setting operation, and a notifying means for notifying a notification state by the notification voltage. An electric vacuum cleaner, wherein the reading pulse is output a plurality of times at predetermined intervals. 4. The vacuum cleaner according to claim 3, wherein the plurality of read pulses output one by one are made into one continuous pulse. 5. An electric vacuum cleaner according to claim 1, wherein said notification means is connected in parallel to a current switching means. 6. Hand operation means provided on a hand operation unit;
An electric blower, and a cleaner main body having a control device that controls the electric blower in accordance with the setting content of the hand operation means, wherein the hand operation means and the control device are provided between the cleaner main body and the hand operation means. An electric vacuum cleaner connected to a signal line provided in a hose interposed therebetween, wherein the control device has a power supply unit that supplies power to the hand operation unit via the signal line, and the control device includes: A reading unit that reads a current flowing through the hand operation unit when a read pulse having the same polarity as the power supply voltage is output from the power supply unit to the hand operation unit via the signal line at predetermined intervals, based on the read current value. Voltage switching means for switching the power supply voltage supplied by the power supply means after the output of the read pulse. Current switching means for switching the current value according to the setting operation, and notification means for changing the notification state according to the voltage switched by the voltage switching means, and notifying the read pulse. When the reading means reads the setting state of the operating means by the reading pulse, the second reading pulse is output at least once in the cycle shorter than the predetermined cycle following the reading pulse. An electric vacuum cleaner characterized by output. 7. The apparatus according to claim 1, wherein a pulse from a reading pulse when the setting state of the hand operation means is read to a last second reading pulse output in a cycle shorter than the predetermined cycle is one pulse. The vacuum cleaner according to claim 6, 8. A hand operation means provided on a hand operation unit;
An electric blower, and a cleaner main body having a control device that controls the electric blower in accordance with the setting content of the hand operation means, wherein the hand operation means and the control device are provided between the cleaner main body and the hand operation means. An electric vacuum cleaner connected to a signal line provided in a hose interposed therebetween, wherein the control device has a power supply unit that supplies power to the hand operation unit via the signal line, and the control device includes: A reading unit that reads a current flowing through the hand operation unit when a read pulse having the same polarity as the power supply voltage is output from the power supply unit to the hand operation unit via the signal line at predetermined intervals, based on the read current value. Voltage switching means for switching the power supply voltage supplied by the power supply means after the output of the read pulse. Current switching means for switching the current value according to the setting operation, and notification means for changing the notification state according to the voltage switched by the voltage switching means, and notifying the read pulse. An electric vacuum cleaner which outputs a plurality of times at predetermined intervals. 9. The vacuum cleaner according to claim 8, wherein the plurality of read pulses output one by one are made into one continuous pulse. 10. An electric vacuum cleaner according to claim 1, wherein said notifying means is a display device. 11. The electric vacuum cleaner according to claim 1, wherein the notifying unit is a sound generator.