JPS5977822A - vacuum cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a vacuum cleaner.

Generally, in a vacuum cleaner, when the load on the electric blower increases due to the type of floor surface where the amount of dust collected increases, the dust collection power decreases. For this reason, conventionally, the input of the machine for electric transmission has been adjusted by manually operating an input regulator such as a variable resistor, but the operation is cumbersome and there is no point in using it unless you know how to use it.

For this reason, we have installed a sensor whose output changes depending on the air volume or negative pressure, and input the output of this sensor into the power control circuit to automatically control the input to the electric blower. Since it is necessary to set the settings, methods have been considered to use the manual input adjuster as described above, but in addition to operating the knob of the input adjuster, there is also a method of using the switching section that selects the signal between the input adjuster and the sensor. You have to operate the knobs.

This has the drawbacks that it is difficult to operate and there is a risk of making mistakes, and that the increased number of knobs makes it difficult to free up space for mounting them.

This invention was made in view of these points.

To provide a vacuum cleaner in which manual control and automatic control can be selected when controlling the input of an electric blower, and furthermore, the selection operation of the control means and the operation of manual control can be performed with a single knob. The purpose is to

This invention provides a mode of use in which the input of the electric blower is intentionally determined by manually operating the input regulator, and a mode of use in which the input is automatically determined by a sensor. The operation near the end of the stroke switches between manual control using the input regulator and automatic control using the sensor, thus improving operability by using only one knob, and solving design problems related to installation space. Further, the output level of the input adjuster near the end of the stroke of the knob is varied by the variable means, thus providing a wide range of input settings that cannot be obtained by automatic control based on the output of the sensor, and further,
By setting the output level of the input regulator near the end of the stroke of the knob equal to the output level of the sensor under no load, the output of the input regulator can be changed from the state where input control is performed depending on the output of the sensor. When switching to the state where υ input control is performed, a state is obtained in which the input control of the electric blower is adjusted from the lowest input to the desired input level, preventing the small bottle from rotating at high speed. When switching between manual control by the input regulator and automatic control by the sensor by moving the input regulator to the end, by switching in the output variable region of the input regulator, the output from both can be temporarily wrapped and output. This prevents the input to the electric blower from being cut off, and furthermore, the input regulator produces a difference in output depending on which end the knob is located, but it is possible to move the knob to either end of the stroke. The switching unit is also switched to perform control by the sensor, and therefore, the control can be switched to a state in which the control is performed by the output of the sensor without changing the output level of the input regulator.

A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. (1) is the main body of the vacuum cleaner. The main body of this vacuum cleaner is a removably connected electric case (2) and dust case (3), with a suction port (4) formed on the front of the dust case (3) and a handle on the top surface. (5), a clamp (6) for the electric case (2), and a lid (7) for opening and closing the opening for disposing of dust. A handle (8) is provided at the top of the electric case (2).
) is installed so that it can be raised or lowered freely, and there is an electric blower (9) inside.
and a cord reel (not shown) are arranged in parallel.

Next, FIG. 4 shows an electric circuit. The electric blower (9
) and a power control circuit (10) are connected in series and connected to a power source via a cord αη.

At t'c, a remote control circuit Q4 is provided which closes the circuit between the stain source and the electric blower (9) and closes the power supply circuit α1 by turning on the remote control switch α. Further, a sensor θ9, a control circuit 0, a display comparison circuit αη, a display 0, and a variable resistor a1 serving as an input regulator are provided, which are maintained in a driving state by receiving power from the power supply circuit 1. There is. These control circuits, the power control circuit α1, the display comparison circuit Oη, and the display device a are connected in sequence.

Furthermore, a changeover switch (c) which is a changeover section is provided. The contact (tLl) of this changeover switch (E) is connected to the output side of the sensor α, the contact (machi) is connected to the slider 9 of the variable resistor 0, and the movable contact (6) is connected to the control It is connected to the input side of the circuit aQ.It is freely provided as shown in Figure 2.The knob) also has the function of pressing the actuator of the changeover switch) when one end of the stroke is reached. ing. A display device θ is also provided at the top of the electric case (2). The sensor (A) is placed at the rear of the electric case (2).

The five circuit elements are connected through a PC board (c) provided on the top of the electric case (2).

In such a configuration, the remote control switch (6) is turned on to drive the electric blower (9).

When the switch (a) is placed in the automatic position (AI), the changeover switch (a) closes between α and 0. On the other hand, the air volume (or The wind pressure) changes, and sensor 4 detects this state and outputs a control signal.This control signal is sent to changeover switch O.
It is input to the power control circuit (10) via I and the control circuit α, and therefore, the power control circuit a1 increases the input to the electric blower (9) when the air volume is low, and conversely increases the input when the air volume is large. lower.

The magnitude of the input to the electric blower (9), which is automatically varied in this way, is displayed by the indicator θ pass.

When cleaning a thin sheet, the suction port body comes into close contact with the sheet, so in the automatic control state, the input of the electric blower (9) is increased, and the suction port body comes into closer contact with the sheet. In such a case, slide the knob) together with the slider Qρ to change the resistance value of the variable resistor (11).In conjunction with this operation, switch the changeover switch ■ so that the voltage between 4 and e is ON. Therefore, the output of variable resistor 01 is changed to control circuit 0.
It is input to the power control circuit θ through Q, and the electric blower (9
) with a desired small input, it is possible to lower the degree of vacuum at the suction port body and clean the sheet without sticking. By adjusting the resistance value of the variable resistor (L) according to the application? ! It is possible to arbitrarily set the input of the electric blower 9).

Next, a second embodiment of the present invention will be explained based on FIGS. 5 and 6. Components that are the same as those in the embodiment described above are designated by the same reference numerals, and description thereof will be omitted (the same applies hereinafter).

This variable resistor (variable means for varying the lowest output level of 11, that is, a semi-fixed resistor) is connected to the variable resistor α field. Adjustment dial (c) for semi-fixed resistance (c)
is provided at the top of the electric case (2).

Therefore, in the automatic control state in which the output of the sensor αQ is output to the control circuit αY, the output of the sensor and the input of the electric blower (9) are at their lowest in an unloaded state with the suction port separated from the floor; Its level remains unchanged. On the other hand, by adjusting the semi-fixed resistor (c), the lowest output level can be adjusted freely when manual control is performed by sliding the semi-fixed resistor (knob) to the end and using the output of the variable resistor α. It is possible to change to For example, when sucking up dust adhering to curtains, etc., during automatic control, the electric blower (9) is driven with an input that is smaller than the input when the suction port body is removed from the floor to prevent the curtain from being sucked. It is also possible to use the device to collect dust while doing so.

Furthermore, a third embodiment of the present invention will be explained based on FIG. 7. In the power supply circuit, the resistor CR1) (R2) is connected in series, and the movable contact (6) is connected to the input side of the control circuit QQ via the diode. In other words, a minimum bias circuit (b) is added. ing.

Therefore, by setting the values of the resistors (R1) and (R2), it is possible to equalize the lowest output levels of the sensor (g) or the variable resistor α. The lowest output level is determined at the level under no-load conditions. Therefore, when switching from automatic control based on the output of sensor αQ to manual control based on the output of variable resistor (to), a switch with less level fluctuation is performed to obtain a state in which the input is adjusted from the lowest input to the desired input. It is also possible to prevent the motor from rotating at high speed.

Furthermore, a fourth embodiment of the present invention will be explained based on FIG. In this embodiment, a contact (dl) connected to the output side of the sensor α1 is provided near the end of the resistor (c) of the variable resistor a1. It constitutes the changeover switch (c) which is the changeover part, and the slider?
V is connected to the control circuit OIj.

Therefore, in the state in which the slider gυ is slid together with the knob e4 and brought into contact with the resistor (c).

Manual control is performed based on the output of variable resistor 0I, (
d), automatic control is performed based on the output of sensor αO. Therefore, it is possible to form a changeover switch () with a simple structure by simply adding a contact (d) corresponding to the resistor (c).

The contact (Ll) can be easily formed with a conductive pattern on the same substrate as the resistor (c).

Furthermore, a fifth embodiment of the present invention will be explained based on FIG. 9. In this example, the variable resistor is 0! ) Arrange three conductive parts ('') (71(y)) in parallel with the resistor (c) of the conductive part (7), and arrange a short conductive part (Jl) at one end of the conductive part (7),
Connect the conductive part (4) (f), connect the conductive part (II) to the control circuit (l), connect the conductive part (gradient) to the output side of sensor α0, and connect the resistor (c) and the conductive part (ru). ) and the slider (c) that connects the conductive part (/1 (I))
are electrically connected to each other and interlocked to form a change-over switch 6, which is a switching section.

Therefore, the knob slope is slid together with the slider elη wheel, but the slider Q°C is connected to the resistor (c) and the conductive part (L).
The state in which it is in contact with is a state in which υ hand b control is performed by the output of the variable resistor α. That is, the outputs of the variable resistors θ are connected to the control circuit 0-1 through the conductive part (-1(Jl), the slider OQ, and the conductive part (IIl) which serves as a common contact point.
1 is output.

When sliding υ onto the slider f[ib] until it separates from the resistor (c), the slider 0 becomes connected to the conductive part (yl (Jl). In other words, the output of the sensor θQ is connected to the conductive part (
The control circuit (1) is connected to the control circuit (1
Output to 0.

Therefore, manual control is performed in the region 11 during the stroke, and automatic control is performed in the region h.

Next, a sixth embodiment of the present invention will be explained based on FIG. 10. In this embodiment, a conductive part (41(p) (Jl) is arranged parallel to the resistance body of the variable resistor α field,
j are interlocked and connected, the conductive part (I) is connected to the control circuit 0 (all), the conductive part (machi) is connected to the output side of the sensor 09,
The conductive parts (J-), (I), and (J) and the slider 2 constitute a changeover switch 0→ which is a changeover part.

The length J-1 of the resistor (C) is shorter than the conductive part (Jll), the length J, 2+J of the conductive part (4), and s is the length of the conductive part (4).
1 (It is much shorter than ll. J-14-22 is the conductive part (
4) (Equal to the length of Il.

Therefore, during the stroke of the knob ■ and the slider υ,
．． This area is the range of manual control that controls multiple inputs to the output of the variable resistor 09, and the area of 12 out of 77 strokes changes the output of the sensor 00 to the slider OJ, lM and the conductive part ( This is the state of automatic control that is output to the control circuit 0Q via Jl (y).Then, when switching from manual control to automatic control, 13 minutes during the stroke from the end of the variable output region of the L movable resistor θ scratch. It is done by making two parts.

For these 13 wraps, signals from variable resistor a1 and sensor θ9 are output to control circuit OQ.

Therefore, it is possible to prevent the input to the electric blower (9) from being interrupted when switching between manual control and automatic control. As shown in Figure 11, when the length of the resistor (c) is made to match the length of the conductive part (c) (g), one end of the resistor (c) is connected to the insulating film 0). By doing so,
It is possible to obtain the same effect.

Finally, a seventh embodiment of the present invention will be explained based on FIG. 12. Conductive part (4) (/') (y) is the resistor (c)
The conductive part (J
J (Ll are arranged.Resistor (c) and conductive part (4)
-) and the slider (G) that connects the conductive part (A+ or conductive part (/) or conductive part (Jl and conductive part (I)) are connected to each other. pinch Q'
4. The conductive part (yl is connected to the control circuit OQ. Furthermore, a switch 0◆6→ is provided, which has movable contacts (@ and contacts ()) (switches) that are interlocked with each other's knob/swing operations. .Conductive part (-1(
1) is connected to the contact of switch 0 ()) and the contact of switch 0 (machi), and the output side of sensor α is connected to switch 01
is connected to the contact point (phrase and switch 0 contact point (/l),
The conductive part (Ll (Jl) is connected to the movable contact (→ of switch 0◆ or (3→), respectively. And these sliders - and the conductive part (C (II) (J) (Lt)
A switching section 6 is formed with the switch 0◆c11.

Therefore, the slider? When υ... is slided by the knob e4 and the slider (g) connects between the conductive part (71 (y)), the output of the variable resistance α is between the slider (g) and the conductive part (71(y)). P) is output to the control circuit (JQ) for manual control.The slider (G) connects the conductive part (JFI (A)) with the slider (B) located at one end. In this case, the switch (B) 01 is connected to the contact (4) (between the columns. Therefore, the output of the senna αQ is transmitted through the contact (A) (@ and the conductive part (L) (p) of the switch 0). It is output to the control circuit aQ and automatic control is performed.Slider (Incorporated)
) is located at the other end and the slider ■ connects the conductive part (4 (#)), the switches 0 to 9 are the contacts (/l (
−) are connected. Therefore, the output of the sensor αυ is output to the control circuit OQ via the contact (J) and the conductive parts (L) and (I) of the switch 0→.

In this way, the output of the variable resistor α field differs depending on which end the slider ev is located, but no matter which end the slider ρ is located, the output level changes from that position. It is possible to switch to automatic control based on the output of sensor αυ without changing the value. There is a big difference between the input when cleaning a paper diameter and the input when cleaning a hard floor. The form of use is also limited depending on the place of use. In such a case, it is not necessary to move the slider c2v over a wide range, and switching between manual and automatic modes can be performed within an effective output adjustment range.

Since this invention is constructed as described above, by operating one knob of the input regulator, the input of the electric blower can be manually adjusted, and the manual control can be switched from manual control to automatic control using a sensor. This makes it possible to eliminate design problems related to the space required for inspection by using only one knob, and furthermore, by changing the output level of the input regulator using a variable means, automatic control can be improved. In addition, by setting the output level of the input adjuster near the end of the stroke of the knob to be equal to the output level of the sensor under no load, When switching from automatic control to manual control, the input control of the electric blower can be quietly adjusted from the lowest level to the desired level, and furthermore, the input control can be changed from manual control to automatic control within the output variable range of the input regulator. By switching, it is possible to prevent interruption of power supply to the electric blower at the time of switching, and moreover, in the state of performing manual control, the output of the input regulator This has effects such as being able to switch to automatic control without changing the level of the control.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of the invention. Fig. 2 is a partially cutaway side view, Fig. 3 is a plan view showing the interlocking relationship between the variable resistor and the changeover switch, and Fig. 4 is a partially cutaway side view.
The figure is an electric circuit diagram thereof, FIG. 5 is a partial perspective view showing the second embodiment of the present invention, and FIG. 6 is a partial electric circuit diagram thereof.
FIG. 7 is an electrical circuit diagram showing a third embodiment of the invention, FIG. 8 is an electrical circuit diagram showing a fourth embodiment of the invention, and FIG. 9 is an electrical circuit diagram showing a fourth embodiment of the invention.
The figure is an electric circuit diagram showing a fifth embodiment of the present invention, and a tenth
The figure is a partial electrical circuit diagram showing a sixth embodiment of this invention.
Fig. 11 is a partial electric circuit diagram showing a modified example, and Fig. 12 is a partial electric circuit diagram showing a modification thereof.
The figure is an electrical circuit diagram showing a seventh embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Vacuum cleaner body, 9... Electric blower, 10... Power control circuit, 15... Sensor, 19... Variable resistor, 20... Changeover switch (switching part), 22...・Knob, 25... Semi-fixed resistance (variable means), 29... Changeover switch (switching part), 31.32... Changeover switch (switching part), 36... For switching part Applicant Tokyo Electric Co., Ltd.

Claims (1)

[Claims] 1. An electric blower that is driven by controlling multiple inputs to a power control circuit is provided in the vacuum cleaner body, and a sensor and a knob are operated to output a control signal according to changes in air volume or wind pressure. In particular, an input regulator whose control signal can be changed is selectively connected to the power control circuit by a switching section, and the operation at the end of the stroke of the knob and the switching operation of the switching section are linked. A vacuum cleaner with special features. 2. The main body of the vacuum cleaner is equipped with an electric blower that is driven by controlling multiple inputs to a power control circuit, and the control signal is generated by operating a sensor and knob that outputs a control signal according to changes in air volume or wind pressure. An input regulator capable of changing the input voltage is selectively connected to the power control circuit by a switching section, and the operation of the knob at the end of the stroke is linked with the switching operation of the switching section. A vacuum cleaner characterized in that a variable means is provided for varying the output level of the input device in the vicinity of the operating position of the knob at the time of switching. 3. The vacuum cleaner body is equipped with an electric blower whose input is controlled and driven by a power control circuit, and the control signal can be changed by operating a sensor and knob that outputs a control signal according to changes in air volume or wind pressure. An input regulator is selectively connected to the power control circuit by a switching section, and the operation at the end of the stroke of the knob and the switching operation of the switching section are linked, and the switching section A vacuum cleaner characterized in that the output level of the input regulator near the operating position of the knob and the output level of the sensor under no load are set to be equal. 4. The vacuum cleaner body is equipped with an electric blower that is driven by controlling multiple inputs to a power control circuit, and the control signal is generated by operating a sensor and a knob that output control signals according to changes in air volume or wind pressure. an input regulator that can be changed is selectively connected to the power control circuit by a switching unit, and an operation at an end of a stroke of the knob within a variable output range of the input regulator and a switching operation of the switching unit are controlled. A vacuum cleaner characterized by being interlocked. 5. The main body of the vacuum cleaner is equipped with an electric blower whose input is controlled and driven by a power control circuit, and a control signal is generated by operating a sensor and knob that outputs a control signal according to changes in air volume or wind pressure. a variable input regulator is selectively connected to the power control circuit at the switching section, and the switching section is controlled by a selected one of operation at one end of the stroke of the knob and operation at the other end of the stroke. A vacuum cleaner characterized in that the operation of the knob and the switching operation of the switching section are linked so as to switch.