JP3522925B2 - 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 an electric vacuum cleaner in which a light emitting means emits light in accordance with setting of a driving state of an electric blower or a driving state by an operating means.

[0002]

2. Description of the Related Art Conventionally, as an electric vacuum cleaner of this kind, for example, an electric blower and a driving state of the electric blower are attached to a hose connected to an electric vacuum cleaner body containing a control means for controlling an input of the electric blower. There is known a configuration including an operating means for setting a light emitting means, a light emitting means for emitting light for displaying information such as a setting state of the operating means or a clogging state of dust, and a power source means for supplying power to the light emitting means. . However, in the configuration in which the power supply means is provided in the hand of the hose, the hand becomes large and the weight increases,
Cleaning workability is impaired.

On the other hand, an operating means, a light emitting means for emitting and displaying the set contents corresponding to the setting of the operating means, and a light emitting means for emitting the set contents corresponding to the setting operation of the operating means. A configuration including a storage unit that performs control for displaying is known. However, since the hose receives many impacts such as a collision with furniture during the cleaning work and an impact to be placed on the floor when the cleaning is interrupted, the storage means provided in the hand may be damaged and the storage means may be damaged. Are expensive and costly.

[0004]

As described above, in the case where the power supply means for supplying power to the light emitting means is provided in the hand of the hose, the cleaning workability is deteriorated due to the increase in the hand size and the increase in weight. Further, the one provided with a storage means for controlling the light emission display of the setting contents by the light emission means corresponding to the setting operation of the operation means is expensive and easily damaged by the impact during the cleaning work. .

Therefore, it is conceivable that only the operating means and the light emitting means are provided in the hand, and the power source means and the storage means are provided in the main body of the electric vacuum cleaner, but an electric wire for reading the operation of the operating means on the main body side of the electric vacuum cleaner. In addition to this, an electric wire for transmitting a signal from the main body of the electric vacuum cleaner to the display part of the hand must be provided, which causes a problem that the weight of the hose is increased, the productivity is lowered, and the cost is increased.

The present invention has been made in view of the above problems, and an object thereof is to provide an electric vacuum cleaner which can easily display the setting contents of an electric blower by appropriately emitting light from a plurality of light emitting portions provided with a simple structure. And

[0007]

An electric vacuum cleaner according to claim 1 is provided with an electric vacuum cleaner main body and an electric vacuum cleaner main body.
An electric blower that is, is connected to the cleaner main body
An operating means provided on the hose for setting the drive state of the electric blower, and an input of the electric blower corresponding to the drive state provided in the main body of the electric vacuum cleaner and set by the operating means. And a control means for controlling, wherein the operating means is a current control means for varying a current value according to a set state by flowing only a unipolar current from the control means,
The control means comprises a light emitting means having a plurality of light emitting portions which emit light by different inputs, and a current having a polarity opposite to the one polarity of the current control means, wherein the control means includes a current detection means for detecting a current value and the operation. Power supply means for supplying power to the means, current direction switching means for switching the current direction from the power supply means when the current value is detected by the current detection means,
In which a current direction that is output from the current direction switching means and a voltage switching means for varying a voltage value from the power supply means when said a reverse polarity, in the vacuum cleaner main body
When the current detection means of the control means provided detects a predetermined current value, the current direction switching means switches the current direction of the power supply supplied from the power supply means to the operation means, so that the current direction is the operation means. When the current control means has the forward polarity, the current detection means detects the current value of the power supply from the power supply means, which is changed corresponding to the setting state of the drive state of the electric blower by the operation means, and the detected current value is set. Correspondingly, the input of the electric blower is controlled, and when the current direction is the forward polarity of the light emitting means of the operating means, the voltage switching means changes the voltage value from the power supply means to cause the plurality of light emitting portions to emit light appropriately.

The vacuum cleaner according to claim 2 is a vacuum cleaner.
The main body, the electric blower provided in the main body of the electric vacuum cleaner, and the hose connected to the main body of the electric vacuum cleaner are provided.
Is an operation means for setting the driving state of the electric blower,
A controller provided in the main body of the electric vacuum cleaner and controlling an input of the electric blower in accordance with a driving state set by the operating means, wherein the operating means has a polarity of one from the control means. The current control means has a current control means for flowing only a current and changing a current value according to a set state, and a plurality of light emitting parts for emitting light in different states corresponding to the setting of the driving state, and the polarity of the current control means is opposite to the one polarity. The control means includes a light emitting means for supplying a current having a polarity, the control means detects the current value from the current control means of the operating means, a power supply means for supplying power to the operating means, and a power supply for the power supply. Current direction switching means for switching the current direction from the supply means,
Voltage switching means for varying the voltage value from the power supply means in response to detection of different current values by the current detection means when the current direction output from the current direction switching means has the opposite polarity. In the body of the vacuum cleaner
When the current direction switching means of the control means is provided, the current direction of the power source supplied from the power supply means to the operating means is switched, and when the current direction is the forward polarity which is one polarity of the current control means of the operating means, the operation is performed. The current detection means of the control means detects the variable current value of the power source supplied from the power supply means of the control means by the current control means of the operation means in accordance with the set state of the drive state of the electric blower by the means. When the input of the electric blower is controlled and the polarity is the forward polarity of the light emitting means of the operating means, the voltage value from the power supply means is varied according to the current value detected by the current detecting means by the voltage switching means. The plurality of light emitting units are appropriately made to emit light to display the setting contents by the operating means.

The vacuum cleaner according to claim 3 is the vacuum cleaner according to claim 1 or 2, wherein the light emitting means comprises a constant voltage means, a transistor and a plurality of light emitting elements. According to the above, the voltage value changed by the voltage switching means of the power supply supplied from the power supply means corresponding to the current value detected by the current detection means is supplied to a predetermined light emitting element of the plurality of light emitting elements to emit light. Let me
Display the settings for the drive status of the vacuum cleaner.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an electric vacuum cleaner of the present invention will be described below with reference to the drawings.

In FIG. 4, reference numeral 1 denotes an electric vacuum cleaner body, to which a base end of a hose 2 is detachably connected, and at the tip end of the hose 2, a rearward branch is made. A hand operation unit 3 having a shape is provided. Further, a suction port body 5 is attached to the tip of the hand operation section 3 via an extension tube 4 whose length is adjusted by connection and disconnection.

As shown in FIG. 5, the hand operation section 3 is branched rearward so that the free end portion is a grip portion.
11 and the upper surface of the hand operation portion 3 extends from the grip portion 11 to the extension pipe 4
The button 12 for stop setting, the button 13 for automatic setting, the button 14 for weak / strong setting, and the button 16 for power brush are sequentially arranged in a line in the direction of the arrow to constitute the operating means 17. Has been done.

Further, on the upper surface of the hand operation portion 3, there are provided light emitting elements LED ₁ , such as two light emitting diodes as light emitting portions,
LED ₂ is provided.

Next, the internal structure will be described with reference to FIG.

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

The control means 25 built in the electric vacuum cleaner body 1 is connected to the gates of the triacs 23 and 24. The control means 25 includes a power supply means 26, a current direction switching means 27 for switching the current direction of the power source output from the power supply means 26, a voltage switching means 28 for varying the voltage value of the power source from the power supply means 26, and It has a current detection means 29.

Further, an operating means 17 is connected to the control means 25, and the operating means 17 includes a button 12 for stop setting, a button 13 for automatic setting, a button 14 for weak / strong setting and a power brush. Current control means 30 that operates in only one polarity to control the current according to the operation of button 16 and each button 1
It is provided with a light emitting means 31 which operates with a polarity opposite to that of the current control means 30 which causes the light emitting elements LED ₁ and LED ₂ to emit light in accordance with the operations of ₂ , ₁₃ , 14, and 16.

The current detecting means 29 of the control means 25 is
The current value of the current controlled by the current control means 30 of the power supplied from the power supply means 26 of the control means 25 is detected.

A part of the control means 25 and the operating means 17
The specific circuit of is as shown in FIG. 2 and FIG.

The control means 25 has a microcomputer 34 to which a constant voltage source V _cc of a power supply means 26 for supplying a constant voltage to various circuits is connected, and a current direction for switching the current direction of the microcomputer 34. The transistor Q ₁ is connected to the current direction switching port P ₁ which constitutes the switching means 27.
Emitter is connected, this to the collector of the transistor Q ₁ is the emitter of the transistor Q ₂ is connected, the collector of the transistor Q ₂ is connected to the terminal A for electrically connecting the hose 2. Further, the current direction switching port P ₁ is between the output terminals of the current direction switching port P ₁ is grounded through a series circuit of a resistor R ₁ and the resistor R _2, the connection point of the resistors R ₁ and the resistor R ₂ Transistor Q
₂ bases are connected. Furthermore, the output terminal of the current direction switching port P ₁ is grounded via a series circuit of a current varying resistor R ₃ and a Zener diode ZD ₁ that sets a constant voltage V ₀ , and these resistor R ₃ and Zener diode ZD _{1 are connected.} The emitter of the transistor Q ₃ is connected to the connection point of, and the collector of the transistor Q ₃ is connected to the collector of the transistor Q ₁ . The base of the transistor Q ₃ is connected to the voltage switching port P ₃ which constitutes the voltage switching means 28 of the microcomputer 34 via the resistor R ₄ .

Further, the base of the transistor Q ₁ is connected to the collector of the transistor Q ₄ , and this transistor Q 4
The emitter of ₄ is grounded, and the base is connected to the voltage switching port P ₃ via the resistor R ₅ .

Further, the collector of the transistor Q _{1 and} the collector of the transistor Q ₃ are connected to the base of the transistor Q ₅ via the resistor R ₆ and the resistor R ₅
The base of the transistor Q ₆ through ₇ are connected, the emitter of the transistor Q ₅ is grounded, the transistor Q ₅
Is connected to a terminal B which electrically connects the hose 2. On the other hand, the collector of the transistor Q ₆ is connected to the collector of the transistor Q ₅ , and the transistor Q ₆
The emitter is connected to a constant voltage source V _cc through a resistor R _8.

Further, the collector of the transistor Q ₂ is
The emitter of the transistor Q ₇ is connected, the base of the transistor Q ₇ is connected to the current direction switching port P ₁ via the resistor R _9, and the collector of the transistor Q ₇ reads the current from the operating means of the microcomputer 34. It is connected to the current reading port P ₂ which constitutes the current detecting means 29. Further, a parallel circuit of a resistor R ₁₀ and a capacitor C ₁ is connected to the collector of the transistor Q ₇ , and the resistor R ₁₀ and the capacitor C ₁ are grounded. A series circuit of a resistor R12 and a diode D2 is connected between the terminals a and b.

On the other hand, the control means 25 is connected to the terminal a and the terminal b, which are electrically connected to the terminal A and the terminal B of the electric vacuum cleaner body 1 when the hose 2 is connected to the electric vacuum cleaner body 1, respectively. It is connected to the operating means 17 via two-wire transmission lines 51, 52. The operating means 17 includes a light emitting diode LED ₁ as a light emitting element, which is a light emitting portion constituting the light emitting means 31, and a transistor Q ₈ between the two wire transmission lines 51 and 52.
Having a series circuit of collector, emitter, resistor R ₁₃ , diode D ₃ and diode D ₁ ,
Is connected a series circuit of parallel light emitting diodes LED ₂ and the resistor R ₁₄ with respect to D _1, is connected to the base of the transistor Q ₈ via the resistor R ₁₄ is the resistance R _15, the collector of the transistor Q ₉ The emitter of the transistor Q ₉ is connected to the resistor R ₁₃ and the diode D.
Connected to ₃ connection points. Further, between the terminal b and the connection point of the diode D ₁ and the diode D ₃ , a zener diode which is turned on at a voltage value V ₂ or more by a constant voltage means.
A series circuit of ZD ₂ and resistor R ₁₁ is connected.

As shown in FIG. 3, the light emitting means 31 has a voltage value higher than the voltage value of the set voltage V ₀ of the Zener diode ZD ₁ and lower than the voltage value of the constant voltage source V _cc and lower than the voltage value V _2. , The zener diode ZD ₂ is in the reverse blocking state, the transistor Q ₉ is turned off, the transistor Q ₈ is turned on, and at a high voltage value of V ₂ or higher, the zener diode ZD ₂ is turned on and the transistor Q ₉ is turned on. Q ₈ is turned off.

On the other hand, a series circuit of a normally open switch 57 and a resistor R ₁₈ operated by the stop setting button 12 in parallel with the current limiting resistor R ₁₂ , a button for automatic setting.
A series circuit of normally open switch and resistor (not shown) operated by 13, a series circuit of normally open switch and resistor (not shown) operated by weak / strong setting 14, operated by button 16 for power brush A series circuit of a normally open switch and a resistor (not shown) is connected.
The resistance values of the resistors corresponding to the buttons 12, 13, 14, 16 are set to different resistance values.

Next, the operation of the above embodiment will be described with reference to FIGS.

First, the microcomputer 34 outputs a pulse of 10 ms from each of the current direction switching port P ₁ and the voltage switching port P ₃ and outputs the L level from the current direction switching port P ₁ of the microcomputer 34.
It also outputs an L level from the voltage switching port P ₃ . Due to the L level output from the current direction switching port P ₁ and the L level output from the voltage switching port P ₃ , the transistor Q
Current is not supplied to the emitter ₁ and the transistor Q _3, the transistors Q ₁ and transistor Q ₃
Is turned off, and the base current is not supplied to the base of the transistor Q ₄ , so that the transistor Q ₄ is also turned off.
Further, since both the transistor Q ₁ and the transistor Q ₃ are turned off, the transistor Q ₆ is turned on, and the current direction switching port P ₁ is at the L level output, the transistor Q ₇ is turned on. A current flows in the direction of the arrow in the circuit diagram shown in FIG. 5, and due to the reverse blocking of the diode D _2, no current flows in the light emitting means 31 of the hose 2,
A current flows through the current control means 30 of the hose 2 and the operation means 17 is in a waiting state.

Here, one of the buttons 1 of the operating means 17
By operating 2, 13, 14 and 16, the circuit is closed and current flows, and the current reading port P constituting the current detecting means 29 is formed.
_{At 2} , the current value of the current is detected at pulse-like timing.

When the current value detected by the current reading port P ₂ is 0, it is judged that the hose 2 is disconnected because the connection between the two wire transmission lines 51 and 52 is open. Also, if the current exceeds the threshold value for hose connection, the current reading port P ₂
When the input is input to, the hose 2 is connected, a current flows through the resistor R ₁₂ , and it is determined that the buttons 12, 13, 14, 16 of the operating means 17 are not operated.

Here, each button 13, 14, 16 of the operating means 17
One of the switches is operated and the corresponding switch 58, 59, 60
When is closed, each button whose resistance value is smaller than resistance R ₁₂
A current flows through the resistors corresponding to 13, 14, 16 and the current value becomes a predetermined threshold current value. Therefore, this current value is detected by the current reading port P ₂ constituting the current detection means 29, and the electric blower is detected. The input of 21 is controlled to a predetermined input corresponding to the current value detected by the current reading port P ₂ . That is, the control means 25 controls the triac 23 to drive and control the electric blower 21 in a predetermined drive state.

At this time, the control means 25 determines that the buttons 13, 14, 16 of the operation means 17 have been operated, and outputs the H level from the current direction switching port P ₁ for a predetermined time in order to switch the current direction. Also, depending on the type of button 13, 14, 16 operated, L level output or H is output from the voltage switching port P _3.
Output level.

When the voltage switching port P ₃ outputs the L level, the base of the transistor Q ₃ becomes the L level, the transistor Q ₃ is turned on, and the transistor Q ₃ is turned on.
₂ turns on. Further, the base of the transistor Q ₆ is turned off the transistor Q ₆ is turned to the H level, the transistor Q ₅ is turned on by the base current is supplied to the transistor Q _5, the current direction in the current reading of the operating means 17 The current direction is reversed, the current of the constant voltage source V ₀ flows through the resistor R ₃ along the arrow in the circuit diagram shown in FIG. 2, and the current flows to the current control means 30 by the reverse blocking of the diode D _2. Instead, a current of voltage V ₀ flows through the light emitting means 31 having the opposite polarity. Further, in the light emitting means 31, the voltage switching port P
_{Since the} L level is output from 3, the transistor Q ₉ is turned off and the transistor Q ₈ is turned on by the current of the voltage value V ₀ whose voltage value is V ₂ or less, as shown in FIG. Thus, the light emitting diode LED ₁ emits light.

When one of the predetermined buttons 13, 14, 16 is operated to output the H level from the voltage switching port P ₃ , the current direction switching port P ₁ and the voltage switching port P ₃ are output. Transistor Q by H level output
₃ turns off, transistor Q ₄ turns on, and transistor Q ₁ turns on. Further, the transistor Q ₄ and the transistor Q ₇ are in the off state, the transistor Q ₂ is in the on state, the transistor Q ₅ is in the on state, and the transistor Q ₆ is in the off state, so that the current direction when reading the current of the operating means 17 is reversed. Then, the polarities are reversed, and the current of the constant voltage source V _cc that does not pass through the resistor R ₃ flows along the arrow in the circuit diagram shown in FIG. 2, and the diode D ₂ causes the current control means 30 of the operating means 17.
The current of the voltage V _cc through the light emitting means 31 no current flows in the. Since the light emitting means 31 outputs the H level from the voltage switching port P ₃ , as shown in FIG. 3, the transistor Q ₉ is turned on by the current of the voltage value V _cc whose voltage value is V ₂ or more. The transistor Q ₈ is turned off and the light emitting diode LED ₂ emits light as shown in FIG.

After the H level is output from the current direction switching port P ₁ for a predetermined time, the current direction switching port P _{1 is} again output.
_The L level is output from _1, and the operation means 17 is in a standby state at the current reading port P ₂ , and in this state the current reading port P 2
_{If 2} does not read a different current value, H level is again output from the current direction switching port P ₁ for a predetermined time to switch the current direction in a pulsed manner to detect the current value and emit light from the light emitting diodes LED ₁ and LED ₂ . Pulse invert. The emission of the pulsed light emitting diodes LED _1, LED _2, the cleaning worker emitting diodes LED _1, LED ₂
Is recognized as emitting light continuously, and the light emitting diode
The operation contents of the operation means 17 can be recognized by the light emitting states of LED ₁ and LED ₂ .

According to the above configuration, the operation of setting the drive state of the electric blower 21 of the operating means 17 is recognized, and the current direction and the voltage value are appropriately switched by this recognition, thereby allowing the hand operating portion 3 of the hose 2. In addition, various buttons 12, 13, 14, 16 constituting the operating means 17 for setting the drive state of the electric blower 21 and two light emitting diode LEDs
₁ , a light emitting means 31 equipped with an LED ₂ is provided, and two wire transmission lines 51, 52 are provided.
Even with a simple configuration, the two light emitting elements can be made to emit light in response to the setting operation of the operating means 17, and the cleaning worker can easily recognize the setting content.

Since the 2-wire transmission lines 51 and 52 do not need to be provided with a power supply means or a storage means in the manual operation section 3 as in the conventional case, the setting contents can be displayed with a simple structure.
It is possible to improve the manufacturability of the hose 2 and reduce the manufacturing cost, and it is possible to improve the cleaning workability by reducing the weight of the hose 2.

Next, another embodiment of the electric vacuum cleaner of the present invention will be described with reference to FIGS. 7 and 8.

The embodiment shown in FIGS. 7 and 8 is
A configuration in which the light emitting elements LED ₁ and LED ₂ of the light emitting means 31 of the embodiment shown in FIGS. 1 to 6 both emit light at a voltage value V ₂
At the same time, it does not emit light.

That is, the light emitting means 71 of the embodiment shown in FIGS. 7 and 8 is, as shown in FIG.
Via the diode D ₁ to the terminal a of the embodiment shown in
A series circuit of a Zener diode ZD ₃ which is a constant voltage means which is turned on at a voltage value V ₄ which is higher than the resistance R ₂₁ and the constant voltage source V _{0 and} lower than the constant voltage source V _cc , the resistance R ₂₂ and the voltage value V ₄ Voltage value V higher than the constant voltage source V _cc and lower than the constant voltage source V _cc
Zener diode ZD that is a constant voltage means that turns on at ₅ or more
₄ series circuits are connected in parallel.

The diode D ₁ is connected to the emitters of the transistors Q ₁₁ , Q ₁₂ , Q ₁₃ . A resistor R ₂₂ is provided at the collector of the transistor Q _11.
And a terminal b through a series circuit of the light emitting diode LED ₃
, The collector of the transistor Q ₁₂ is connected to the terminal b through the resistor R ₂₃ and the base of the transistor Q ₁₁ , and the base of the transistor Q ₁₂ is connected through the resistor R ₂₅ to the resistor R ₂₁ and the zener. It is connected to the connection point of diode ZD ₃ .

Further, the collector of the transistor Q ₁₃ is connected to the terminal b through the series circuit of the resistor R ₂₄ and the light emitting diode LED ₄ , and the base of the transistor Q ₁₃ is connected through the resistor R ₂₆ to the resistor R ₂₂ and the Zener diode. It is connected to the connection point of ZD ₄ .

As shown in FIG. 7, the light emitting means 71 causes the Zener diode ZD to operate at a voltage value higher than the voltage value of the constant voltage source V ₀ and lower than the voltage value V ₄ lower than the voltage value of the constant voltage source V _{cc. 3, the} Zener diode ZD ₄ is in the reverse blocking state, the transistor Q ₁₂ is turned off and the transistor Q ₁₁ is turned on, and the transistor Q ₁₃ is turned off, so that the light emitting diode LED ₃ emits light as shown in FIG. 8. Also,
Zener diode when voltage value is V ₄ or more and voltage value is V ₅ or less
ZD ₃ is turned on, Zener diode ZD ₄ is in a reverse blocking state, transistor Q ₁₂ is turned on and transistor Q ₁₁ is turned on, and transistor Q ₁₃ is turned off. As shown in FIG. 8, light emitting diode LED ₃ , LED ₄ does not emit light. When the voltage value is V ₅ or higher, the Zener diode ZD ₃
Further, the Zener diode ZD ₄ is turned on, the transistor Q 12 is turned on to turn off the transistor Q ₁₁ , and the transistor Q ₁₃ is turned off to turn on the transistor Q ₁₃ , and the light emitting diode LED ₄ emits light.

According to this structure, the light emitting diodes LED ₃ and LED ₄ do not emit light at the same time because the voltage value of the constant voltage source V _cc fluctuates due to the voltage fluctuation of the commercial AC power source E. With this, it is possible to easily and surely inform the cleaning worker of the set contents, and it is not necessary to increase the difference between the voltage value V ₀ of the Zener diode ZD1 and the voltage value of the constant voltage source V _cc to be set, which facilitates the design.

Next, still another embodiment of the vacuum cleaner of the present invention will be described with reference to FIGS. 9 to 11.

The embodiment shown in FIGS. 9 to 11 is a combination of the embodiments shown in FIGS. 1 to 6 and the embodiments shown in FIGS. 7 and 8.

That is, the voltage switching means 28 of the embodiment shown in FIGS. 1 to 6 is used as the voltage switching ports P ₃ and P ₄ .
It consists of two. Then, these voltage switching ports P ₃ ,
From P ₄ , L level output and H level output as shown in Table 1, and the constant voltage source shown in Table 1
Terminals A of the main body 1 of the electric vacuum cleaner, which are changed to different voltage values,
Applied between B.

[0048]

[Table 1] Further, as shown in FIG. 9, the light emitting means 81 includes a series circuit of a resistor R ₂₁ and a Zener diode ZD ₃ and a resistor R _{21 connected} to a terminal a of the embodiment shown in FIGS. 1 to 6 via a diode D _1. A series circuit of ₁₁ and Zener diode ZD ₂ is connected in parallel with a series circuit of resistor R ₂₂ and Zener diode ZD ₄ . Furthermore, the diode D ₃ and the emitters of the transistors Q ₁₁ , Q ₁₂ , and Q ₁₃ are connected to the diode D ₁ , respectively.

The emitter of the transistor Q _{8 and} the emitter of the transistor Q ₉ are connected to the diode D ₃ via the resistor R ₁₃ . Further, the collector of the transistor Q ₈ is connected to the light emitting diodes LED _1, with light emitting diodes LED ₂ to the collector of the transistor Q ₉ is connected through a resistor R ₁₄ is connected, the resistance R ₁₅ via the transistor Q ₈ The base of is connected. The base of the transistor Q ₉ is connected to the resistor R ₁₁ and the Zener diode via the resistor R _16.
It is connected to the connection point with ZD ₂ .

The collector of the transistor Q ₁₁ is connected to the terminal b through the series circuit of the resistor R ₂₂ and the light emitting diode LED ₃ , the base of the transistor Q ₁₁ is connected to the collector of the transistor Q ₁₂ , and the transistor Q ₁₂ is connected. The collector of ₁₂ is connected to the terminal b through the resistor R ₂₃ . The base of this transistor Q ₁₂ is a resistor R
It is connected to the connection point of the resistor R ₂₁ and the Zener diode ZD ₃ via ₂₅ .

Further, the collector of the transistor Q ₁₃ is connected to the terminal b via the resistor R ₂₅ and the light emitting diode LED _4, and the base of the transistor Q ₁₃ is connected via the resistor R ₂₆ to the resistor R ₂₂ and the Zener diode ZD ₄ . It is connected to the connection point.

Next, the operation of the embodiment shown in FIGS. 9 to 11 will be described. The basic operation is similar to that of the above-described embodiment.

First, the microcomputer 34 outputs a pulse of 10 ms from the current direction switching port P ₁ and the voltage switching ports P ₃ and P ₄ , respectively. The current direction switching port P ₁ of the microcomputer 34 is shown in FIG.
As shown in (d), L level output and voltage switching port P
L and L ₃ are also output from ₃ and P ₄ as shown in FIG. By the L level output from the current direction switching port P ₁ and the L level output from the voltage switching port P ₃ ,
No current flows through the light emitting means 81 of the hose 2, but a current flows through the current control means 30 of the hose 2, and the operation means 17 is in a waiting state. Here, one of the buttons 12 of the operation means 17,
By operating 13, 14, 16 the circuit is closed and a current flows, and at the current reading port P ₂ which constitutes the current detecting means 29, the current is read at pulsed timing as shown in FIG. To detect.

When the current detected by the current reading port P ₂ is 0, the two transmission lines 51 and 52 are open, and the control means 25 determines that the hose 2 is disconnected.
In addition, the current is the threshold value i _{1 of the} hose connection shown in FIG.
When it is input to the current reading port P ₂ that the value exceeds the limit, the hose 2 is connected and the buttons 12, 13, 14, 16 of the operating means 17 are connected.
Judge that is not operated.

When the automatic setting button 13 is operated and the switch 59 is closed, the current passes through the resistor R ₁₈ having a smaller resistance value than the resistor R _12, and the current value exceeds the threshold value i ₃ and the threshold value i. _Since the current value is ₄ or less, this current value is detected by the current reading port P ₂ which constitutes the current detection means 29, and
As shown in (a), the control means 25 controls the input of the electric blower 21 in correspondence with the automatic output. That is, the control means 25 controls the triac 23 to drive and control the electric blower 21.

At this time, the control means 25 judges that the automatic setting button 13 has been operated, and outputs the H level from the current direction switching port P ₁ for a predetermined time as shown in FIGS. 11 (d) and 11 (e). . Further, the voltage switching port P ₃ outputs L level and the voltage switching port P ₄ outputs H level. Then, due to the H level output from the current direction switching port P _1, the polarity of the operating means 17 at the time of reading the current is reversed, and the current does not flow to the current control means 30, and the light emitting means 81 as shown in Table 1. A current having a voltage value of V _b flows and the light emitting means 81
Then, the light emitting diode LED ₁ emits light, and the automatic lights up to indicate to the cleaning worker that the automatic setting has been made.

After the H level is output from the current direction switching port P ₁ for a predetermined time, the L level is again output from the current direction switching port P ₁ and the operation means is operated at the current reading port P ₂ .
If the current reading port P ₂ does not read a different current value in this state, the H direction is output again from the current direction switching port P ₁ for a predetermined time to switch the current direction in a pulsed manner, pulsed manner to invert the detection and light-emitting diode LED ₁ value.

When the power brush button 16 is operated and the corresponding switch is closed, the resistance value changes to the resistance R _12.
Since a current flows through the resistance corresponding to the smaller power brush button 16 and the current value exceeds the threshold value i ₅ , this current value is detected by the current reading port P ₂ ,
As shown in FIG. 1 (b), the power brush 22 is ON-controlled, and at the same time, the control means 25 determines that the power brush button 16 has been operated, and as shown in FIGS. In synchronization with the current pulse, the threshold value H of the current value from the current direction switching port P ₁ and the voltage switching ports P ₃ , P ₄
Outputs the threshold value L of the current value for a predetermined time.

With these outputs, the current direction switching port P
₁ and the H level output from the voltage switching port P _3, the current direction of the operating means 17 at the time of reading the current is reversed, so that no current flows in the current control means 30 of the operating means 17, and the light emitting means 81 is shown in Table 1. As shown in, _a current of voltage value V _a flows,
In the light emitting means 81, the light emitting diodes LED ₁ and LED ₃ emit light, and the automatic and power brush lights to indicate to the cleaning operator that automatic and power brush settings have been made.

Similarly, after the H level is output from the current direction switching port P ₁ for a predetermined time, the L level is output from the current direction switching port P ₁ again, and the current reading port P ₂ waits for the operating means 17. In this state, if the current reading port P ₂ does not read a different current value, the current direction switching port P ₁ outputs the H level again for a predetermined time,
The current direction is switched in a pulsed manner to detect the current value and invert the light emission of the light emitting diodes LED ₁ and LED _{3 in} a pulsed manner.

When the weak / strong setting button 14 is operated and the switch 61 is closed, the switch corresponding to the weak / strong setting button 14 is closed and the resistance value is smaller than the resistance R _12. A current flows through the resistance corresponding to the power brush button 16, and the current value exceeds the threshold value i ₄ and is equal to or lower than the threshold value i ₅ . Then, to detect the current value the current by the reading port P _2, as shown in FIG. 11 (a), the control unit 25 performs control to reduce the input of the electric blower 21 to the output of the weak.

Further, the control means 25 determines that the weak / strong setting button 14 has been operated, and the control means 25 has already been formed in the control means 25 by a counter means or a memory means (not shown) which has already been used for the power brush 22. By recognizing that the current is switched on, the current direction switching port P ₁ outputs the H level for a predetermined time as shown in FIG. 11 (d). Further, as shown in FIG. 11 (e), H level output is made from the voltage switching ports P ₃ and P ₄ . Then, due to the H level output from the current direction switching port P ₁ , the current direction and the current direction at the time of reading the current of the operating means 17 are reversed, and the current does not flow to the current control means 30.
As shown in, a current having a voltage value of V _cc flows, and in the light emitting means 81, the light emitting diodes LED ₂ and LED ₄ emit light, the manual brush and the power brush are turned on, and the cleaning worker is informed that the manual brush and the power brush have been set. indicate.

After the H level is output from the current direction switching port P ₁ for a predetermined time, the current direction switching port P _{1 is} again output.
_The L level is output from _1, and the operation means 17 is in a standby state at the current reading port P ₂ , and in this state the current reading port P 2
_{If 2} does not read different current value, H level is again output from the current direction switching port P ₁ for a predetermined time to switch the current direction in a pulsed manner to detect the current value and emit light from the light emitting diodes LED ₂ and LED ₄ . Pulse invert.

Further, when the weak / strong setting button 14 is operated again and the switch is closed again, the current value similarly exceeds the threshold value i ₄ and is equal to or less than the threshold value i _5, so this current value Is detected by the current reading port P ₂ of the current detecting means 29. At this time, the control means 25 has already controlled the input of the electric blower 21 with a weak output, and the fact that the power brush is being driven is stored in the control means 25 in advance by not shown counter means or memory. As a result of the recognition by the means, the control means 25 strongly controls the input of the electric blower 21 by the operation of the weak / strong setting button 14 again, as shown in FIG.

Further, the control means 25 judges that the input of the electric blower 21 should be strongly controlled by operating the weak / strong setting button 14 again, and as shown in FIGS. 11 (d) and 11 (e). In synchronization with the constant current pulse, the current direction switching port P ₁ outputs H level, and the voltage switching port P ₃ outputs H level.
The L level output is made from the voltage switching port P ₄ . And
Due to these outputs, the polarity of the operating means 17 at the time of reading the current is reversed in a pulsed manner, and no current flows through the current control means 30, and the light emitting means 81 has a current value of V _cc as shown in Table 1. And the light emitting means 81 emits a light emitting diode LED ₂ , LED
₄ emits light, and the manual lights up to indicate to the cleaning worker that the manual setting has been made. Similarly, the detection of the current value and the light emission of the light emitting diodes LED ₂ and LED ₄ are reversed in a pulsed manner.

When the power brush button 16 is operated again, the current value similarly exceeds the threshold value i ₅ , so this current value is detected at the current reading port P ₂ and controlled. The means 25 recognizes that the power brush 22 is already on-controlled by the counter means and the storage means (not shown), and the electric blower 21 recognizes that the input is strongly controlled manually, so that the power brush When the button 16 of is pressed again, as shown in FIG.
Stop 22.

At this time, the control means 25 controls the power brush 22 to be stopped by operating the power brush button 16 again, and the input of the electric blower 21 is manually controlled to be strong. Then, as shown in FIGS. 11D and 11E, in synchronization with the constant current pulse, the current direction switching port P ₁ outputs the H level and the voltage switching port P ₃ outputs the H level to switch the voltage. The L level output is performed from the port P ₄ for a predetermined time, the current direction of the operating means 17 at the time of reading the current is reversed, and no current flows through the current control means 30 of the operating means 17, and the light emitting means 81 is shown in Table 1. As described above, the current having the voltage value V _c flows, the light emitting diode LED ₂ emits light in the light emitting means 81, and the manual is displayed to indicate that the cleaning worker has manually set, and the current direction switching port P ₁ is displayed. Pulse output to detect the current value again. Fine light emitting diode LE
Continue reversing the emission of D ₂ .

On the other hand, when the stop setting button 12 is operated and the corresponding switch is closed, a current flows through the corresponding resistor R ₁₅ having a smaller resistance value than the resistance R _12, and the current value reaches the threshold value i ₂ . since the threshold value i ₃ following current values beyond detects the current value in the current read port P ₂ of the current sensing means 29, the control unit 25 as shown in FIG. 11 (a) stop the input of the electric blower 21 At the same time, the current direction switching port P ₁ that has switched the output in a pulsed state is set as the L level output in the initial state, and the current reading port P ₂ waits for the setting operation of the operation means 17, that is, the current from the current control means 30. The value is detected, no current flows through the light emitting means, and the light emitting means does not emit light. When the power brush 22 is driven, the power brush 22 is also stopped at the same time.

When the hose 2 is removed, the current detected by the current reading port P ₂ becomes 0, and the two-wire transmission line 51,
Since the space between 52 is open, the control means 25 determines that the hose 2 is disconnected.

According to the above embodiment, the two-wire transmission line 51,
At 52, the electric blower 21 and the power brush on the hand operation unit 3
An operating means provided with a current control means 30 and a light emitting means 31 for outputting a predetermined current value in response to a drive state setting operation of 22.
With a simple structure provided with 17, the plurality of light emitting diodes LED ₁ , LED ₂ , LED ₃ , LED ₄ of the light emitting means 31 are operated by the operating means 17
It is possible to appropriately and independently emit light in accordance with the setting contents by, and a lot of information can be displayed to the cleaning operator.

Incidentally, in the embodiment shown in FIGS. 1 to 6, the embodiment shown in FIGS. 7 and 8 and the embodiment shown in FIGS. It has been described that the current is detected in synchronization with the constant current pulse when 13, 14, 16 are operated, but any method of recognizing the setting state by the operation of the operation means 17, such as the configuration of detecting the voltage, is not limited. It may be a method

Further, the light emitting diodes LED ₁ , LED ₂ , LE
Instead of light-emitting elements such as D ₃ and LED ₄ , it is possible to use any one such as a lamp.

When a plurality of light emitting elements are provided, the embodiment shown in FIGS. 1 to 6, the embodiment shown in FIGS. 7 and 8 and the embodiment shown in FIGS. Not limited to the light emitting state, the voltage value and the current value may be appropriately changed, such as simultaneous lighting or separate and independent lighting, and any combination may be used.

Further, a light emitting means is provided on the hand operation portion 3 of the hose 2.
Although 31 is provided and explained, it may be provided in the vacuum cleaner body 1. In this case, like the upright type,
The vacuum cleaner main body 1 or the operation means 17 and the grip portion 11 near the vacuum cleaner main body 1 are preferably provided at a position where a cleaner can easily confirm the displayed contents.

It should be noted that in the embodiment shown in FIGS. 1 to 6, the embodiment shown in FIGS. 7 and 8 and the embodiment shown in FIGS. Then, the configuration in which the operation content is displayed on the manual operation unit 3 has been described, but, for example, a pressure sensor or the like may be used to display the dust clogging state in stages, or both the operation content and the dust clogging state may be displayed.

[0076]

The vacuum cleaner according to claim 1 is an electric vacuum cleaner.
When a predetermined current value is detected by the current detection means of the control means provided in the main body of the machine , the current direction switching means switches the current direction of the power supply supplied from the power supply means to the operating means to change the current direction. Is the forward polarity of the current control means of the operating means, the input of the electric blower is controlled in accordance with the current value of the power source from the power supply means which is varied corresponding to the setting state of the driving state of the electric blower by the operating means. However, when the current direction is the forward polarity of the light emitting means of the operating means, the voltage value from the power supply means is varied by the voltage switching means to cause the plurality of light emitting sections to emit light appropriately. Abnormal conditions such as display of contents and clogging of dust are displayed on the hose.
Even if the operation means provided are used to display in stages , 2
The plurality of light emitting units can appropriately emit light with a simple configuration such as a line transmission line.

[0077] According to the electric vacuum cleaner according to claim 2, electrical
When the current direction switching means of the control means provided in the cleaner body switches the current direction of the power supply supplied from the power supply means to the operation means, and the current direction is the forward polarity of the current control means of the operation means, In response to the set state of the drive state of the electric blower by the operating means, the current detection means of the control means detects the variable current value of the power supply from the power supply means by the current control means to control the input of the electric blower, When the current direction is the forward polarity of the light emitting means of the operating means, which is opposite to the current direction at the time of detecting the current value, the voltage value from the power supply means corresponds to the current value detected by the current detecting means by the voltage switching means. Since a plurality of light emitting units can be appropriately lighted even with a simple structure such as a two-wire transmission line, the setting contents by the operating means can be easily displayed.

According to the electric vacuum cleaner of claim 3, in addition to the electric vacuum cleaner of claim 1 or 2, the light emitting means includes a constant voltage means, a transistor and a plurality of light emitting elements. And the transistor supplies the voltage value changed by the voltage switching means of the power supply supplied from the power supply means to the predetermined light emitting element among the plurality of light emitting elements corresponding to the current value detected by the current detecting means. Therefore, for example, even with a simple structure such as a two-wire transmission line, only a predetermined light emitting element among the plurality of light emitting elements can emit light, and the setting content of the driving state of the vacuum cleaner can be easily displayed.

[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 circuit configuration of the same electric vacuum cleaner.

FIG. 3 is a circuit diagram showing a circuit configuration of a light emitting means of the same.

FIG. 4 is an explanatory diagram showing a light emitting state with respect to a voltage of the light emitting element.

FIG. 5 is a perspective view showing an external configuration of the same electric vacuum cleaner body.

FIG. 6 is a perspective view showing the same hand operating unit.

FIG. 7 is a circuit diagram showing a circuit configuration of a light emitting means showing another embodiment of the electric vacuum cleaner of the present invention.

FIG. 8 is an explanatory diagram showing a light emitting state of the light emitting element with respect to a voltage.

FIG. 9 is a circuit diagram showing a circuit configuration of a light emitting means showing still another embodiment of the vacuum cleaner of the present invention.

FIG. 10 is an explanatory diagram showing a light emitting state of the light emitting element with respect to a voltage.

FIG. 11 is a timing chart showing the operation of the same electric vacuum cleaner. (A) Waveform diagram showing the input of the electric blower (b) Waveform diagram showing the input of the electric motor of the power brush (c) Waveform diagram showing the current detected by the current detection means and the hand voltage (d) Current direction switching Waveform diagram showing the current output from the port (e) Waveform diagram showing the current output from the voltage switching ports P ₃ and P ₄ (f) The light emitting states of the light emitting elements LED ₁ , LED ₂ , LED ₃ and LED ₄ Waveform diagram shown

[Explanation of symbols]

1 vacuum cleaner main body 17 operation means 21 electric blower 25 control means 26 power supply means 27 current direction switching means 28 voltage switching means 29 current detection means 30 current control means 31 light emitting means ZD ₂ , ZD ₃ , ZD ₄ constant voltage means there Zener diode _{Q 8, Q 9, Q 11} , Q 12, Q 13 transistors _{LED 1, LED 2, LED 3} , LED 4 light emitting diodes as a light emitting element is a light emitting portion

Claims (3)

(57) [Claims] 1. A vacuum cleaner main body, an electric blower disposed in the vacuum cleaner main body, and a hose connected to the vacuum cleaner main body,
And operating means for setting the driving state of the serial electric blower provided in the vacuum cleaner body, in response to the driving state set by said operating means and control means for controlling the input of the electric blower, The operation means includes a current control means that allows only one-polarity current from the control means to flow and changes a current value according to a set state, and a plurality of light emitting units that emit light by different inputs. The control means includes a light emitting means for supplying a current having a polarity opposite to that of the polarity, the control means detects a current value, a power supply means for supplying power to the operation means, and a current detected by the current detection means. Current direction switching means for switching the current direction from the power supply means when a value is detected, and the power supply means when the current direction output from the current direction switching means has the opposite polarity And a voltage switching means for varying the voltage value from the electric vacuum cleaner. 2. An electric vacuum cleaner main body, an electric blower disposed in the electric vacuum cleaner main body, and a hose connected to the electric vacuum cleaner main body.
And operating means for setting the driving state of the serial electric blower provided in the vacuum cleaner body, in response to the driving state set by said operating means and control means for controlling the input of the electric blower, The operating means is a current control means for allowing only one-polarity current from the control means to flow and changing the current value according to a set state, and a plurality of light emitting parts for emitting light in different states corresponding to the setting of the driving state. And a light emitting means for flowing a current having a polarity opposite to the one polarity of the current control means, wherein the control means is a current detection means for detecting a current value from the current control means of the operation means, and the operation Power supply means for supplying power to the means, current direction switching means for switching the current direction from the power supply means, and when the current direction output from the current direction switching means has the opposite polarity An electric vacuum cleaner, comprising: voltage switching means for varying the voltage value from the power supply means in response to detection of different current values by the current detection means. 3. The vacuum cleaner according to claim 1, wherein the light emitting means includes a constant voltage means, a transistor, and a plurality of light emitting elements.