JPS61187828A - Display apparatus of electric 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 Field of Industrial Application The present invention relates to a display device for a vacuum cleaner used in general households.

BACKGROUND OF THE INVENTION A conventional display device for a vacuum cleaner is disclosed in, for example, Japanese Patent Application Laid-open No. 1983-
As shown in Japanese Patent No. 1136, the structure was as shown in FIGS. 4 and 6.

That is, the main body 1 was provided with a display circuit 2 and a display section 3. In addition, 4 in the figure is a fan, 5 is a dust collection part, 6 is a hose,
7 is a power supply section.

Problems to be Solved by the Invention However, with such a structure, if you try to look at the display part 3 of the vacuum cleaner while cleaning, you will take a break from cleaning, turn around, and see the display provided on the top of the main body 1. There was the problem of having to look into Part 3.

Therefore, the present invention aims to make the display section easier to see so that the status of the vacuum cleaner can be easily checked.

Means for solving the problems and the technical means of the present invention for solving the above problems are as follows:
The main body and the hand part are connected by an AC signal, and the hand part is provided with a control part and a display part, and the half wave of the AC signal supplies the control signal, and the remaining half wave supplies power to the display part. .

For production The effect of this technical means is as follows.

In other words, the power control circuit of the electric blower built into the main body is connected to the hand part of the end of the hose using a signal line, an AC signal is placed on the signal line, and a control signal is sent from the hand part to the main body using an AC half wave. In addition to controlling the power of the vacuum cleaner, it is also possible to check the status of the vacuum cleaner at the hand by supplying display power to the hand using the remaining half of the AC wave.

As a result, you can easily control the power and check the status of the vacuum cleaner.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, 11 is a main body, a hose 12 is connected to this main body 11, and an extension pipe 13 and a suction tool 14 are connected to the main body 11.
is attached. An electric blower 15 and its control section 16 are provided inside the main body 11, and a piano wire 17 electrically connected to the control section 16 is provided inside the hose 12. The hand part 18 is provided with a hand control part 19 and a power display part 2.
0, and a piano wire 17 is connected.

FIG. 4 shows an overall block diagram. An electric blower 15 and a control section 1e are connected in series to a commercial power source 21, and a control section 16
and the hand portion 18 are connected by two piano wires 17, and the hand portion 18 is divided into a hand control portion 19 and a power display portion 20.

A more specific circuit diagram is shown in FIG. The control unit 16 controls the current flowing to the electric blower 15 using a bidirectional thyristor 22, and a control circuit 23 is connected to the gate thereof.

The hand control section 19 has a diode 24 and one of two variable resistors 25 connected in series, and a power display section 2.
o is a diode 26 connected in the opposite direction to the diode 24, a resistor 27, a capacitor 281 display parts 29, 2
and the other variable resistor 25 in the series.

With the above configuration, when the variable resistor 25 in the hand control section 19 is moved, the value of the variable resistor 25 changes, and the current flowing through the variable resistor 25 also changes.

Since the diode 24 is connected in series to the variable resistor 25, the half-wave (lower half-wave . . . 19 in FIG. 3) current of the AC current flowing through the piano wire 17 changes.

The control circuit 23 detects this change, changes the gate signal to the bidirectional thyristor 22, and controls the bidirectional thyristor 2.
The conduction angle of the electric blower 15 changes, and the electric power of the electric blower 15 is controlled.

On the other hand, the other half wave of the current flowing through the piano wire 17 (in FIG. 3, the upper half wave...2o) flows through the diode 26.
The current flows through the resistor 27 and is stored in the capacitor 28 as a direct current. This becomes a power source for the display section 29, and the display section can perform display without requiring a power source such as a battery. One of the two variable resistors 25 is connected to the display section 29, and the variable resistor 2 of the hand control section 19 is connected to the display section 29.
6, and can send a signal corresponding to power control to the display section 29. Moreover, since the circuit can be separated from the control circuit, the display section 2
9, the most suitable resistance value can be selected, and the display section 2
9 can be easily configured.

That is, by changing the resistance values of the two sets of variable resistors 25 in the hand portion 18, the power of the electric blower 16 can be controlled and at the same time the power can be displayed on the display portion 29. The piano wire 17 carries an AC signal, and the half wave is used for control, and the other half wave is used for display power, which is divided by diodes 24 and 26, so the piano wire is
Only a book is required, and the connection between the main body 11 and the hand portion 18 can be made very easily. Further, since there are two variable resistors 26, the optimum resistance value and resistance change characteristic can be set separately for control and display month, and the configuration of the hand portion 18 can be simplified.

Although the display unit 29 is shown in a block diagram in this embodiment,
Specifically, using a light emitting diode or liquid crystal allows for a compact and easy-to-see structure. It is also possible to have a built-in sounding body to notify the user with sound.

Effects of the Invention As is clear from the description of the embodiments above, the present invention connects the vacuum cleaner main body and the hand portion with two signal lines, and connects the AC
Load the signal, use half the wave as a control signal from the hand to the main unit, use the other half wave to supply power from the main unit to the hand display, and one to control two variable resistors on the hand. by using one for the display signal and the other for the display signal.
A display part is provided in the hand part with a simple structure, so that the state of the main body being cleaned can be easily checked at hand.

[Brief explanation of drawings]

FIG. 1 is a side view of a vacuum cleaner according to an embodiment of the present invention, and FIGS. 2 and 3 are views of the invention. 11...Body, 12...Hose, 16
...mark/control section, 17...piano wire, 18...
...Hand part, 19...Hand control part, 2o...Display part. Name of agent: Patent attorney Toshio Nakao and 1 other person
・Hon Hayashi 12 Hose 1st figure t5-[j first air blow 4 contempt・tl・system#
J@ yl/-4 Yuan part O Fig. 2 z3...#JJ#l] @ 銖74.21-9 Guiodo 25. 2nd age old man 21? -Gonden T- 29・&moto part 4 figure 5 figure 7?3

Claims (1)

[Claims] An electric blower and its power control device are installed in the main body of the vacuum cleaner, and two signal lines are provided to connect the main body of the vacuum cleaner and the hand part.An alternating current signal is passed through these signal lines, and the half wave is sent to the hand control device in the hand part. one diode to pass the other half wave to the power display, another diode to pass the other half wave to the power display, and two variable resistors, one operated to change the signal of the hand control device and the other to change the signal of the power display. A vacuum cleaner display device built into the hand.