JPH10117979A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner which has wide usability and provides fine drive setting. SOLUTION: In this vacuum cleaner, when a prescribed operation mode is set by an operation means 5, a voltage corresponding to the operation mode is outputted by a voltage adjustment means 22 connected to a control means 21. The outputted voltage is read from a port corresponding to a plurality of operation modes provided in a microcomputer constituting the control means 21 by a voltage read means 25. A drive control means 27 of the control means 21 selects a threshold to be an input value of an electric blower 2 corresponding to the read voltage from a storage means 26. TRIAC Tr is phase controlled based on the threshold of the selected input value and the electric blower 2 is operated by this input value. In the case of being used for another vacuum cleaner main body, the voltage value for operating and outputting a variable resistance is adjusted so that a threshold of a different input value is selected even in the case of the same operation mode so as to drive. A fine operation condition can be thus set at every operation mode, a stable performance between products can be provided, it can be used for a different type of vacuum cleaner main body, and its flexibility can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner in which a control means controls a driving state of an electric blower in accordance with an operation mode set by an operation means.

[0002]

2. Description of the Related Art Conventionally, as a vacuum cleaner for controlling a driving state of an electric blower by operating means connected to a vacuum cleaner main body via a hose, generally, as shown in FIG.
The reference voltage is changed to a predetermined signal voltage value by operating the operation means to select an operation mode, the voltage value of the signal is converted by an analog / digital converter or the like, and the reading means and the reading means are converted based on the digitized signal. Ports 32a and 32b corresponding to the operation modes of the microcomputer 31
, 32c, and controls the input of the electric blower and the like according to a plurality of threshold values stored in the microcomputer 31.

When assembling a circuit board on which a microcomputer 31 or the like in which each set value is determined is mounted in a main body case together with an electric blower or the like, a voltage value of a signal read by the microcomputer 31 is set to a main body to be mounted. In order to eliminate the influences of the sealing property of the case and the variation of the performance of the electric blower, for example, as shown in FIG. The initial state is adjusted by selecting either the value a1 or the high input value b1.

[0004]

[Table 1]

[0005]

However, in the case of the conventional vacuum cleaner as shown in FIG. 4 and Table 1, the circuit board on which the microcomputer 31 whose respective set values have already been determined is mounted on the main body case. In this case, there are only two initial settings of the voltage value of each operation mode, and detailed settings cannot be made. Further, in models having different suction forces, it is necessary to set a set value in the microcomputer 31 for each product, and there is a problem that versatility is not provided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a vacuum cleaner capable of finely setting a driving state for each operation mode set with high versatility.

[0007]

According to a first aspect of the present invention, there is provided a vacuum cleaner having a built-in electric blower, and a voltage corresponding to a plurality of operation modes having different driving states of the electric blower. An operation unit, in a vacuum cleaner having a control unit that reads a voltage set by the operation unit and controls the electric blower in any one of operation modes, for each operation mode set by the operation unit. Voltage adjusting means capable of adjusting the corresponding voltage, voltage reading means provided corresponding to these voltage adjusting means for reading the voltage output from each voltage adjusting means, and voltage reading means provided corresponding to these voltage reading means, respectively. Storage means for storing a plurality of input values of the electric blower corresponding to the voltage read by the voltage reading means, and input of the electric blower stored in these storage means. Drive control means for selecting a value according to the voltage read by the voltage reading means and controlling the drive of the electric blower on the basis of the selected input value. According to the operation mode setting operation, the voltage corresponding to the set operation mode is appropriately adjusted by the voltage adjusting unit, and the voltage is read by the voltage reading unit corresponding to the set operation mode, and the operation is stored in the storage unit. The drive control means selects an input value of the electric blower according to a plurality of voltages stored for each mode, and drives and controls the electric blower based on the selected input value. Further, by adjusting the variable resistances of the plurality of voltage adjusting means corresponding to the operation mode and changing the output voltage value, the voltage value read by the voltage reading means differs, and the drive control means is stored in the storage means in a plurality. By selecting different input values, the electric blower is driven with different input values even in the same operation mode, and fine-tuned settings that are different for each type or product can be easily performed only by operating the variable resistor, and versatility is improved. .

According to a second aspect of the present invention, in the electric vacuum cleaner according to the first aspect, the drive control means controls the voltage read by the voltage reading means corresponding to the operation mode set by the operation means. When the voltage exceeds the range of the voltage stored in the storage means corresponding to the input values of the plurality of electric blowers in the corresponding operation mode, the predetermined input value of the electric blower in the set operation mode is selected. If the voltage read by the voltage reading means corresponding to the operation mode set by the means exceeds the range of the voltage corresponding to the input value of the electric blower stored in the storage means, the drive control means sets the voltage. In order to select an input value corresponding to a predetermined voltage within the range of the operation mode to be performed, the specified operation mode is set even if the voltage is shifted due to noise or a defective setting of the variable resistor. Constant to be driven control.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vacuum cleaner according to the present invention will be described with reference to the drawings.

In FIG. 3, reference numeral 1 denotes a vacuum cleaner main body, which has a built-in electric blower 2 and a base end of a hose 3 communicating with the electric blower 2 is detachably connected thereto. The distal end of the hose 3 is provided with a hand operation unit 4 having a shape branched backward. The hand operation unit 4 is provided with operation means 5 for selectively setting a plurality of operation modes of the electric blower 2 in different driving states. In addition, a suction port 7 is attached to the tip of the manual operation unit 4 via a telescopic extension tube 6.

The hand operating section 4 branches backward and the free end of the tip becomes a grip section 8. The operating means 5 provided on the upper surface of the hand operating section 4 extends from the grip section 8 to the extension pipe 6. Operation button 12 for stop setting in operation mode, operation button for weak operation setting in operation mode
13. An operation button 14 for setting the middle operation as the operation mode and an operation button 15 for setting the strong operation as the operation mode are arranged in a row.

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

As shown in FIG. 1, a commercial AC power supply e is connected to an electric blower 2 via a triac Tr.

The commercial AC power source e is connected to a control means 21 provided in the main body 1 of the electric vacuum cleaner.
The operating means 5 is connected to 21, and a voltage adjusting means 22 is connected to the operating means 5.

Further, the control means 21 is provided with a microcomputer 23 as shown in FIG. The microcomputer 23 has a plurality of ports 24a for reading the voltage output from the voltage adjusting means 22 corresponding to the operation mode by selecting and setting the operation mode of the operation means 5.
A voltage reading means 25 having 24b and 24c; a storage means 26 storing a plurality of input values of the electric blower 2 corresponding to the voltage values read by the voltage reading means 25;
The drive control means 27 is configured to select an input value from the device and to control the triac Tr based on the input value.

On the other hand, the voltage adjusting means 22 has a plurality of variable resistors 29a, 29b, 29c each having one end grounded and the other end connected to a reference voltage source 30, for example, 5 V. These variable resistors 29a, 29b, 29c is an analog / digital converter 28
It is connected to each port 24a, 24b, 24c of the microcomputer 23 via a, 28b, 28c. By operating the operation buttons 13 to 15 of the operation means 5, the variable resistors 29a, 29b, and 29c convert the reference voltage source to set a predetermined voltage value in correspondence with the operation buttons 13 to 15. The signals are output to analog / digital converters 28a, 28b, and 28c, converted into digital signals corresponding to the voltage values by the analog / digital converters 28a, 28b, and 28c.
Output to a to 24c.

That is, for example, the operation button 13 for "weak"
Is operated, the port of the microcomputer
A voltage having an arbitrary value of 1.2 to 1.8 V is output to the analog-to-digital converter 28a via the variable resistor 29a to the analog-to-digital converter 28a.
When a digital signal corresponding to an arbitrary voltage value of 1.8 V is output and the "middle" operation button 14 is operated, a variable resistor 29b and an analog / digital signal are similarly connected to the port 24b of the microcomputer. A digital signal corresponding to a voltage value of 2.2 to 2.8 V is output via the converter 28b, and when the "strong" operation button 15 is operated, the voltage is similarly changed to the port 24c of the microcomputer. A digital signal corresponding to a voltage value of 3.2 to 3.8 V is output via the resistor 29c and the analog / digital converter 28c. When the operation button 12 for “stop” is operated, a voltage value of 0 V is applied to a port (not shown) of the voltage reading means 25 to which the voltage adjusting means 22 having no variable resistance of the microcomputer 23 is connected. Is output.

As shown in Table 1, for example, as shown in Table 1, the "weak" operation button 13 is operated by the operating means 5 so that the "weak" port 24 of the voltage reading means 25 is stored.
The digital signal read at a is 1.2V to 1.4V.
In the case of corresponding to the voltage value of V, the input value a1 of the electric blower 2
The threshold value for controlling the phase of the triac Tr is stored in the drive control means 27 such that the input value b1 is obtained when the voltage corresponds to a voltage value of 1.4 to 1.6 V.
At 27, a threshold value for controlling the phase of the triac Tr is stored. When the threshold value corresponds to a voltage value of 1.6 to 1.8 V, the threshold value for controlling the phase of the triac Tr by the drive control means 27 so that the input value becomes c1. Is stored. Also, storage means
26, the operation button 14 for "medium"
Is operated, a threshold value that becomes a plurality of input values d1, e1, and f1 is stored in accordance with a digital signal corresponding to the voltage value read at the “medium” port 24b of the voltage reading unit 25, and “ In accordance with a digital signal corresponding to the voltage value read at the "high" port 24c, a plurality of input values g1, h1, and i1 are stored as threshold values.

[0019]

[Table 2] Further, the control means 21 is connected to a pressure detection means (not shown) for detecting pressure, such as a pressure sensor disposed on the negative pressure side of the electric blower 2.

The input value a1 is set, for example, by an increase in the negative pressure by the pressure detecting means, that is, an increase in the negative pressure accompanying an increase in the amount of dust in the dust collecting chamber defined on the negative pressure side of the electric blower. If so, as shown in Table 2, a threshold value that is increased by the drive control unit 27 to the input value a2 and the input value a3 is stored in the storage unit 26.

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

First, when assembling and forming the vacuum cleaner main body 1, a circuit board (not shown) on which the control means 21, the voltage adjusting means 22, the triac Tr and the like are mounted is assembled. At the time of this assembling, depending on the type and the performance of the electric blower 2, each variable resistor corresponding to the operation mode of the
Adjust 29a, 29b, and 29c, respectively. For example, "weak"
The variable resistor 29a connected to the port 24a is connected to a digital port corresponding to a voltage value of 1.2 to 1.4 V to the port 24a corresponding to the operation of the "weak" operation button 13 of the operation means 5. Adjust to output a signal, and set port 24
The variable resistor 29b connected to the terminal b outputs a digital signal corresponding to a voltage value of 2.2 to 2.4 V to the port 24b corresponding to the operation of the "middle" operation button 14 of the operation means 5. The variable resistor 29c connected to the "strong" port 24c is connected to the "strong" operating button of the operating means 5.
15 to the corresponding port 24c when 3.2 is operated.
Adjustment is made so as to output a digital signal corresponding to a voltage value of 4V.

When cleaning, the main body 1 of the vacuum cleaner is used.
, A commercial AC power source e is supplied by connecting the hose 3, the extension pipe 6, and the suction port body 7, and each operation button of the operation means of the hand operation unit is selectively operated to select and set a desired operation mode.
Perform cleaning. When the hose 3 is not connected, the control unit 21 reads the voltage value by the voltage reading unit 25, recognizes that the hose is not connected, and
Is controlled not to drive.

Here, when the operation button 13 is operated in a state where the control means 21 recognizes that the hose 3 is connected, the control means 21 causes the voltage adjustment means 22 to set the predetermined voltage. Output. That is, 5
The reference voltage source of V is 1.2 to 1.4 through the variable resistor 29a.
A digital signal corresponding to the converted voltage value is output to the port 24a through the analog / digital converter 28a after being converted to an arbitrary voltage between V. Then, the voltage reading means 25 receives the voltage 1.2 from the voltage adjusting means 22 through the port 24a.
A digital signal corresponding to ~ 1.4V is detected. Then, the drive control means 27 recognizes that the digital signal corresponding to the voltage output by the voltage reading means 25 has been read, and as shown in Table 2, the voltage value stored in the storage means 26 A threshold value which becomes the input value a1 of the electric blower 2 according to the digital signal corresponding to 1.2 to 1.4 V is selected, and the phase of the triac Tr is controlled by the threshold value, thereby driving the electric blower 2 with the input value a1. .

When the operation button 14 is operated, the reference voltage source is similarly changed by the voltage adjusting means 22 to the variable resistor 29.
b is converted into an arbitrary voltage between 2.2 and 2.4 V and output as a digital signal corresponding to the port 24b.
By detecting the digital signal corresponding to 4V, the drive control means 27 causes the voltage values 2.2 to 2.2 stored in the storage means 26 to be stored.
Electric blower 2 according to a digital signal corresponding to 2.4 V
Is selected, and the phase of the triac Tr is controlled to drive the electric blower 2 with the input value d1. Further, when the operation button 15 is operated, the reference voltage source is similarly controlled by the voltage adjusting means 22 through the variable resistor 29c.
It is converted into an arbitrary voltage between 3.4V and output as a digital signal corresponding to the port 24c, and the voltage reading means 25 detects a digital signal corresponding to a voltage of 2.2 to 2.4V at the port 24c. Accordingly, the drive control means 27 selects a threshold value which becomes the input value g1 of the electric blower 2 according to the digital signal corresponding to the voltage value of 2.2 to 2.4 V stored in the storage means 26, and controls the phase of the triac Tr. And electric blower 2
Is driven with the input value g1.

Further, the control means 21 is selected by the drive control means by detecting an increase in the negative pressure exceeding a predetermined value by a pressure detection means (not shown) as the amount of dust collected during cleaning increases. Storing a threshold value of an input value larger than the current driving state related to the threshold value corresponding to the current driving state
The electric blower 2 is driven with a larger input value selected from 26. That is, for example, when the current drive state is the input value a1, as shown in Table 2, as the negative pressure increases, the input values a2 and the thresholds that become the input value a3 are sequentially increased. To control the phase of the triac Tr to drive the electric blower 2 with the input value a2 and the input value a3.

When a circuit board (not shown) equipped with the control means 21, the voltage adjusting means 22, the triac Tr, and the like is mounted on another vacuum cleaner main body 1 having a different type and a different performance of the electric blower, the voltage is similarly increased. The variable resistors 29a, 29b and 29c of the adjusting means 22 are adjusted respectively. That is, for example, the variable resistor 29a connected to the "weak" port 24a is connected to the port 24a corresponding to the operation of the "weak" operation button 13 of the operating means 5 by 1.6 to 1.8V. Variable resistor 29b connected to the “medium” port 24b.
Is adjusted so that a digital signal corresponding to a voltage value of 2.4 to 2.6 V is output to the corresponding port 24b when the "middle" operation button 14 of the operation means 5 is operated,
The variable resistor 29c connected to the "strong" port 24c provides a voltage of 3.4 to 3.6V to the corresponding port 24c when the "strong" operation button 15 of the operating means 5 is operated. Adjust so that the corresponding digital signal is output.

When the operation button 13 is operated while the control means 21 recognizes that the hose 3 is in the connected state in this other vacuum cleaner main body 1,
The 5V reference voltage source is converted by the voltage adjusting means 22 to an arbitrary voltage between 1.6 and 1.8V via the variable resistor 29a, and is connected to the corresponding port 24a via the analog / digital converter 28a. It is output as a digital signal corresponding to an arbitrary voltage between 1.6 and 1.8V. Then, the voltage reading means 25 receives the voltage 1.6 from the voltage adjusting means 22 at the port 24a.
A digital signal corresponding to ~ 1.8V is detected. Then, the drive control means 27 recognizes that the voltage reading means 25 has read the digital signal corresponding to the voltage, and as shown in Table 2, the voltage value 1.6 stored in the storage means 26. A threshold value which becomes the input value c1 of the electric blower 2 according to the digital signal corresponding to ~ 1.8V is selected, and the phase of the triac Tr is controlled by the threshold value to drive the electric blower 2 with the input value c1.

When the operation button 14 is operated, the reference voltage source is similarly set by the voltage adjusting means 22 to the variable resistor 29.
b is converted into an arbitrary voltage between 2.4 and 2.6 V and output as a digital signal to the corresponding port 24b. The voltage reading means 25 outputs the voltage between 2.4 and 2.6V at the port 24b.
By detecting the digital signal corresponding to 6V, the drive control means 27 causes the voltage values 2.4 to 2.4 stored in the storage means 26 to be stored.
Electric blower 2 according to a digital signal corresponding to 2.6 V
Is selected, the phase control of the triac Tr is performed, and the electric blower 2 is driven at the input value e1. Further, when the operation button 15 is operated, the reference voltage source is similarly controlled by the voltage adjusting means 22 through the variable resistor 29c.
Converted to any voltage between 3.6V and corresponding port
The drive control means 27 outputs a voltage signal stored in the storage means 26 by detecting a digital signal corresponding to a voltage of 2.4 to 2.6 V at the port 24c by the voltage reading means 25. The phase control of the triac Tr is performed by selecting a threshold value to be the input value h1 of the electric blower 2 according to the digital signal corresponding to 2.4 to 2.6 V, and the electric blower 2
Is driven with the input value h1.

As described above, by adjusting the variable resistors 29a, 29b, and 29c of the voltage adjusting means 22 corresponding to the operation mode and appropriately changing the output voltage value, the voltage value read by the voltage reading means 25 can be adjusted. The drive controller 27 selects a plurality of different input values stored in the storage unit 26 so that the electric blower 2 can be driven with different input values even in the same operation mode, and is different for each type or product. Fine settings can be easily made only by the operation of the variable resistor, and the same circuit board can be used for the electric blower main body 1 having different types, different performances, different sealing properties, and the like. Standard changes such as setting a slightly larger value can be easily performed, and versatility can be improved.

Further, conditions set in the microcomputer in advance, that is, voltage reading means of the storage means 26
By setting and storing the threshold value, which is the input value corresponding to the voltage value read at 25, more finely, more detailed settings can be made, and versatility can be improved.

On the other hand, when a digital signal corresponding to a voltage value exceeding the voltage value range corresponding to the operation mode selected and set by the operation means 5 is read by the voltage reading means 25, the drive control means 27 Then, the threshold value within the range of the input value corresponding to the operation mode is selected from the storage means 26 to drive and control the electric blower 2. That is, for example, when the "weak" operation button 13 is operated by the operating means 5, the reference voltage source of 5V is applied by the voltage adjusting means 22 between 1.2 and 1.4V via the variable resistor 29a. Is converted to an arbitrary voltage of the corresponding port 24a via the analog / digital converter 28a.
A digital signal corresponding to an arbitrary voltage between 1.2 and 1.4 V is output, and the voltage reading means 25 reads the digital signal at the port 24a. When a digital signal corresponding to a voltage value other than 2 to 1.8 V is read, any one of the "weak" input values a1, b1, and c1 stored in the storage means 26 is selected to set the triac Tr. The phase is controlled, and the electric blower 2 is driven.

According to this mode correction control, even if the voltage is deviated due to noise or defective setting of the variable resistor, etc.
The drive can be stably controlled in the set predetermined operation mode, and a vacuum cleaner having stable performance can be provided, and the cleaning performance can be improved.

For example, when a digital signal corresponding to a voltage value lower than 1.2 V is detected, the lower limit input value a1
Is selected, and when a digital signal corresponding to a voltage value higher than 1.8 V is detected, the upper limit input value c1 is selected so that a driving state close to the condition set by adjusting the variable resistance in advance is selected. , And a vacuum cleaner having more stable performance can be provided, and the cleaning performance can be improved.

A variable resistor whose variable range does not exceed the range of the voltage value corresponding to the corresponding operation mode is used, or a noise filter or the like is provided so that noise is not input and the voltage value does not fluctuate. In such a case,
Such mode correction control need not be performed.

Although the voltage value can be varied by providing the variable resistors 29a, 29b and 29c, any other configuration capable of varying the voltage value almost continuously can be used.

[0037]

According to the first aspect of the present invention, the variable resistance of the plurality of voltage adjusting means corresponding to the operation mode is adjusted to adjust the voltage corresponding to the operation mode of the electric blower set by the operation means. The voltage value read by the voltage reading means varies depending on the operation mode by varying the voltage value by the voltage adjusting means, and the drive control means selects and drives a plurality of different input values stored in the storage means. Since control is performed, even in the same operation mode, the drive state of the electric blower can be set and controlled by setting different input values, and fine-tuned settings different for each type or product can be easily performed only by operating the variable resistor, and versatility can be improved. .

According to the second aspect of the invention, in addition to the effects of the first aspect, the voltage read by the voltage reading means corresponding to the operation mode set by the operation means is: When the voltage exceeds the range of the voltage corresponding to the input value of the electric blower stored in the storage means, the drive control means selects the input value corresponding to the predetermined voltage within the set operation mode range, Even if the voltage is shifted due to noise or a defective setting of the variable resistor, the drive can be stably controlled in the set predetermined operation mode, and stable performance without variation between types or products can be obtained.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a microcomputer constituting the control means.

FIG. 3 is a perspective view showing an external configuration of the main body of the electric vacuum cleaner.

FIG. 4 is a block diagram showing a microcomputer constituting control means of the conventional vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric cleaner main body 2 Electric blower 5 Operating means 21 Control means 22 Voltage adjustment means 25 Voltage reading means 26 Storage means 27 Drive control means 29a, 29b, 29c Variable resistance

Claims (2)

[Claims] 1. A cleaner main body having a built-in electric blower, operating means capable of selectively setting a voltage corresponding to a plurality of operation modes in which the electric blower has different driving states, and a voltage set by the operating means. In an electric blower provided with control means for reading and controlling the electric blower in any one of operation modes, voltage adjustment means capable of adjusting a voltage corresponding to each operation mode set by the operation means; Voltage reading means provided corresponding to the means for reading a voltage output from each voltage adjusting means; and the electric blower provided corresponding to the voltage reading means and corresponding to the voltage read by the respective voltage reading means. Storage means for storing a plurality of input values of the electric blower, and a voltage obtained by reading the input values of the electric blower stored in these storage means by the voltage reading means. And a drive control means for controlling the drive of the electric blower based on the selected input value. The drive control means stores the voltage read by the voltage reading means corresponding to the operation mode set by the operation means in the storage means corresponding to the input values of the plurality of electric blowers in the corresponding operation mode. 2. The vacuum cleaner according to claim 1, wherein a predetermined input value of the electric blower in the set operation mode is selected when the voltage exceeds the stored voltage range.