JPH01214329A - Vacuum cleaner control device - 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 the Invention The present invention relates to a control device for a vacuum cleaner having a power nozzle used in general households.

2. Description of the Related Art A conventional vacuum cleaner control device will be described below with reference to the drawings.

FIG. 3 is a circuit diagram of a conventional vacuum cleaner control circuit. In FIG. 3, an electric blower 1 and a bidirectional thyristor 2 are connected in series to a commercial power source. Reference numeral 3 denotes a control circuit for the bidirectional thyristor 2, and the bidirectional thyristor 2 of the main body control circuit 7 is controlled by a switch 5 and a variable resistor 6 provided on the hand control section 4 at the end of the hose.
is configured to control the trigger timing of the Reference numeral 8 denotes a power nozzle provided at the end of the hose, and a rotating brush is driven by an electric motor 9 built into this power nozzle. Reference numeral 10 denotes a switch provided on the hand operation unit 4 to turn on and off the electric motor 9 in the power nozzle 8.

Problems to be Solved by the Invention In the conventional configuration as described above, the electric motor 9 that drives the rotating brush is turned on and off by a manual switch lO.
The problem was that it was inconvenient to use because it had to be turned on and off. Also, when cleaning, a rotating brush is driven on the carpet.

Manual switch operation is required to stop the rotating brush when folding or on the floor, which also poses a problem of poor usability.

The present invention solves the above conventional problems by providing a detection means for detecting the air volume in the air passage of the power nozzle, and when the air volume reaches a certain set value or more, the rotating brush is automatically driven and used. The purpose of the present invention is to provide a control device for a vacuum cleaner that does not require a person to turn on a switch each time.

Means for Solving the Problems In order to solve the above problems, the vacuum cleaner control device of the present invention is a vacuum cleaner having a power nozzle that drives a rotating brush by an electric motor, and detects the air volume in the air passage. and a control means for supplying electric power to the electric motor to drive the rotating brush when the output of the detecting means exceeds a certain set value, and controlling the rotating brush driving electric motor to be turned on or off based on the difference in air volume. This is possible.

Operation With the above configuration, the air flow in the power nozzle air passage is detected by the detection means, and when the output from the detection means exceeds a certain set value, power is supplied to the electric motor to automatically drive the rotating brush. For example, by adjusting the air volume setting, you can automatically turn on the rotating brush of the power nozzle for carpets and floors in response to the input set on the electric blower input control on the vacuum cleaner itself.
It can be switched off, improving usability without the user having to operate a switch each time, and can automatically perform appropriate cleaning according to the floor surface.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings. Fig. 1 is a block diagram of the control circuit of the motor for driving the rotating brush of a vacuum cleaner, which is an embodiment of the present invention, and is built into the power nozzle, and commercial power is supplied from the vacuum cleaner body through a hose. has been done. In FIG. 1, an electric motor 11 for driving a rotating brush of a power nozzle and a bidirectional thyristor 12 are connected in series to both ends of a commercial power source. Reference numeral 13 denotes an air volume detector, which generates a voltage output that corresponds one to one depending on the change in air volume.The output is connected to the inverting terminal of the comparator 14 with hysteresis, and the non-inverting terminal is connected to the reference voltage 15. is entered.

The output of the comparator 14 is applied to the control circuit 16, and when the output of the comparator 14 changes from "H" to "L", it is applied to the bidirectional thyristor 1 via the control circuit 16.
When a gate trigger signal is input to 2, the bidirectional thyristor 12 is turned on.

FIG. 2 is a circuit diagram embodying FIG. 1. In Fig. 2, rotating brush drive motors 11 are installed at both ends of the commercial power source.
and bidirectional thyristor 12 are connected in series.

The output of the airflow detector 13 is input to the inverting terminal of the comparator 17, and the potential divided by the resistor 18.degree. 19 is input as a reference voltage to the non-inverting terminal. Diode 20 and resistor 2
1 is connected between the output terminal of the comparator 17 and the non-inverting terminal, and a hysteresis width is set. 22 is comparator 1
This is a pull-up resistor for the output of 7. The output of the comparator 17 is connected to the transistor 2 via an inverter 23 and a resistor 24.
It is connected to the base of 5. The resistor 26 is a collector resistor of the transistor 25 and sets the gate trigger current of the bidirectional thyristor 12. Resistance 27.2
8 is for stabilizing the operation of the transistor 25 and the bidirectional thyristor 12.

The operation will be explained using the above configuration. In FIG. 2, when the vacuum cleaner body is in operation, air flows through the air passage of the power nozzle. The air volume is detected by the air volume detector 13, and its output is input to the inverting terminal of the comparator 17, and when the voltage exceeds a preset reference voltage, the output of the comparator 17 becomes "H".
” to “LH,” and the output of the inverter 23 becomes “L.
” becomes “H”.

Therefore, the transistor 25 is turned on, a trigger signal flows to the bidirectional thyristor 12, and the bidirectional thyristor 1
2 is turned on, power is supplied to the rotary brush driving electric motor 11, and the rotary brush of the power nozzle rotates. In this way, the rotating brush of the power nozzle
When the vacuum cleaner body is in operation and the air volume exceeds a certain set value, it will automatically rotate.

Effects of the Invention As described above, according to the present invention, there is a detection means for detecting the amount of air in the air passage, and when the output of this detection means exceeds a certain set value, power is supplied to the electric motor provided in the power nozzle. By providing a control means for driving the rotating brush, the electric motor for driving the rotating brush can be automatically turned on and off based on the difference in air volume reaching the vacuum cleaner body, without the user having to operate a switch each time. This improves usability and automatically performs appropriate cleaning depending on the floor surface.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a control circuit of a motor for driving a rotating brush of a vacuum cleaner showing one embodiment of the present invention, and FIG.
FIG. 3 is a circuit diagram of a conventional vacuum cleaner control circuit. DESCRIPTION OF SYMBOLS 11... Rotating brush drive electric motor, 12... Bidirectional thyristor, 13... Air volume detector, I4... Comparator with hysteresis, 15... Reference voltage, 16... Control circuit, 17... Comparator, 18.19...
Resistor, 23... Inverter, 25... Transistor. Agent Yoshi Morimoto Private 1st figure ff-Ichiro responsible fu "Ran Ei 6 movement dean Kaniso iz, - Zu Matakata i'i;)'KT49pJ/4, -, Hissu issue 4 people ni, l, lta group 1U

Claims (1)

[Claims] 1. A vacuum cleaner having a power nozzle that drives a rotating brush by an electric motor, which includes a detection means for detecting the air volume in an air passage, and supplies power to the electric motor when the output of the detection means exceeds a certain set value. 1. A control device for a vacuum cleaner, comprising a control means for driving a rotating brush, and configured to be able to turn on and off the rotating brush driving electric motor based on a difference in air volume.