JP2900618B2 - Central cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a cleaner body installed outdoors, under stairs, and the like, and a hose unit connectable to the cleaner body via a pipe. The hose unit includes a rotary brush for carpet cleaning. The present invention relates to a central cleaner having a floor suction tool incorporating the driving motor.

[0002]

2. Description of the Related Art In recent years, a central cleaner having a hose unit having a rotary brush for cleaning carpets and a floor suction tool with a built-in motor for driving the carpet has become mainstream.

Conventionally, this kind of central cleaner is shown in FIG.
And the structure as shown in FIG. 5 was common. Less than,
The configuration will be described.

As shown in FIG. 1, the cleaner body 1 has a fan motor 2, a fan motor drive unit 3 and a filter for filtering sucked dust therein. The hose outlet of each room 5,
6 and 7, a pipe 8 is combined and connected, a hose unit 9 is connected to one of the hose outlets 5, 6, and 7, and extension pipes 10 and 11 connected to the end of the hose unit 9 and It comprises a floor suction device 12 connected to the distal ends of the extension tubes 10 and 11. The hose unit 9 includes an input setting unit 13 for setting an input of the fan motor 2, and a drive signal generating unit 14 for receiving a signal from the input setting unit 13 and converting the signal into a drive signal for the fan motor 2.
And AC0, which is the basis for controlling the phase of the fan motor 2
And a ZVP detector 15 for detecting V. Here, the hose unit 9 is inserted into the insertion port 6.
The conductive wires from the hose insertion ports 5, 6, 7 are connected in parallel to the cleaner body 1. Also, the exhaust is constructed so that it is exhausted outdoors or under the floor of the house.

When the user sets the input setting unit 1 of the hose unit 9
3 is operated, the fan motor driving unit 3 drives the fan motor 2, and the floor suction device 12, the extension pipes 10, 1
1, through a hose unit 9, a hose insertion port 6, and a pipe 8, to suck dust from the suction port 4 for cleaning.

In recent years, there has been a strong demand for carpet cleaning, and a rotary brush and a motor 16 for driving the rotary brush are provided inside the floor suction tool 12. For this reason, it is necessary to wire a power supply line from the cleaner main body 1 to the floor suction device 12. However, due to wiring workability, the output voltage of the cleaner main body 1 is set to 36 V AC or less, The voltage is also set to 36 V AC or less. For this purpose, a transformer 17 is provided in the cleaner body 1 and an AC100 is provided on its primary side.
When V is supplied, AC36V is output from the secondary side. Further, the operating voltage of the drive signal generator 14 in the hose unit 9 is obtained from the output voltage of the transformer 17. That is, the output voltage of the transformer 17 also serves as the operating voltage of the floor suction device 12 and the hose unit 9.

[0007]

In such a conventional central cleaner, a large-capacity transformer 17 cannot be used due to cost considerations, and the secondary side of the transformer 17 shown in FIG. As can be seen from the voltage-current characteristics, if the rotating brush driving motor 16 is kept locked or close to it for a long time, a large current flows, and the output voltage on the secondary side of the transformer 17 drops extremely. as a result,
Since the output voltage of the transformer 17 also serves as the operating voltage of the floor suction device 12 and the hose unit 9, not only the operation of the rotary brush but also the operation of the drive signal generator 14 is stopped, and the fan motor 2 is turned off. There was a problem of stopping. Further, there is a danger that the transformer 17 may generate abnormal heat, and there is a problem in safety.

The present invention has been made to solve the above-mentioned problems, and when the rotating brush driving motor is locked or close to the locked state for a long time, the rotating brush driving motor is stopped.
In addition to preventing the transformer from generating abnormal heat, ensuring safety, the transformer must output normal voltage, operate the drive signal generator normally, and prevent the fan motor from stopping. It is the purpose of 1.

[0009]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention provides a cleaner body installed outdoors, under stairs, and the like, and a hose unit connectable to the cleaner body via a pipe. The hose unit includes a rotary brush for cleaning a carpet and a floor suction tool having a motor for driving the carpet, an input setting unit for setting an input of a fan motor built in the cleaner body, and the input setting unit. A drive signal generation unit that converts the drive signal into a drive signal of a fan motor by the signal of
A voltage detection unit that detects an operation voltage of the drive signal generation unit, and a stop signal generation unit that outputs a stop signal of the rotary brush driving motor based on an output of the voltage detection unit,
The cleaner body includes a fan motor driving unit that drives the fan motor according to a signal of the driving signal generation unit, a motor that drives the rotating brush driving motor, and a power supply that supplies power to the driving signal generation unit. A first problem solving means is to stop the rotary brush driving motor by the stop signal when an abnormality such as a lock occurs in the brush driving motor.

[0010]

According to the first aspect of the present invention, when the rotary brush driving motor is locked or close to the locked state for a long time, the voltage detecting unit detects an abnormal state of the rotary brush driving motor and outputs a stop signal. The generator can output a stop signal to the rotating brush driving motor to stop the rotating brush driving motor, and the transformer can output a normal voltage. Therefore, the drive signal generator performs a normal operation, and the fan motor continues to operate without stopping.

[0011]

An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 1, a DC voltage generator 19 of the hose unit 18 provides an operating voltage of the drive signal generator 14. The voltage detector 20 is a DC voltage generator 19
Is compared with a preset value, and the DC voltage generator 1
If the voltage at 9 is lower, the stop signal generator 21 outputs a stop signal to the rotary brush driving motor 16. In this embodiment, a variable resistor 22 is used as the input setting unit 13, an oscillator 23 that changes the frequency according to the resistance value of the variable resistor 22 is used as the drive signal generation unit 14, and a voltage detection unit 20 is used. An OP amplifier 24 is used, a transistor 25 and a relay 26 are used as the stop signal generator 21, and a bidirectional thyristor 27 is used as a control element of the rotary brush driving motor 16. The contact of the relay 26 is closed by manual operation, and the OF of the transistor 25 is turned off.
It is opened by F.

In the above configuration, the transformer 17 shown in FIG.
The operation will be described with reference to the voltage-current characteristics of the secondary side of FIG.

If the rotating brush is rotating normally while the contact of the relay 26 is manually turned on and the rotating brush driving motor 16 is driven, the voltage V1 is output from the transformer 17 and And the output of the OP amplifier 24 is H
At the level, the transistor 25 is turned on, the bidirectional thyristor 27 is kept on, the rotating brush continues to operate, and the fan motor 2 operates normally. Here, if the rotating brush is locked or close to the locked state for a long time, a large current flows, so that the output voltage on the secondary side of the transformer 17 drops extremely to V2. At this time, the operating voltage of the drive signal generation unit 14 is about to fall below the limit voltage, and the voltage detection unit 20 detects this voltage,
4 outputs the L level. As a result, transistor 25
Is turned off and the contact of the relay 26 is turned off, the bidirectional thyristor 27 is turned off, the power supply to the rotary brush driving motor 16 is stopped, and the rotary brush stops operating. As a result, the output voltage on the secondary side of the transformer 17 recovers from V2 to V0, the drive signal generator 14 can continue to operate, and the fan motor 2 continues normal operation. Since the contact of the relay 26 can be closed only by manual operation, the rotating brush driving motor 16 remains OFF.

Next, another embodiment of the present invention will be described with reference to FIG. The same components as those in the above-described conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, a first transformer 28 supplies power to the rotary brush driving motor 16, and a second transformer 29 supplies power to the drive signal generator 14, and each of them has a vacuum cleaner. It is built into the main body 30. First transformer 2
8, the voltage-current characteristics on the secondary side are the same as those of the transformer 17 of the above embodiment.
It has the same characteristics as shown in FIG.

The operation of the above configuration will be described. When the rotating brush is rotating normally while the contact of the relay 26 is manually turned on and the rotating brush driving motor 16 is driven, the first transformer is operated. The voltage V1 is output from 28, the rotating brush continues to operate, and the fan motor 2 also operates normally. Here, if the rotating brush is locked or close to the locked state for a long time, a large current flows, and the output voltage on the secondary side of the first transformer 28 drops extremely to V2. The rotating brush remains locked. However, since the operating voltage of the drive signal generator 14 is supplied from the second transformer 29, the drive signal generator 14 is not affected at all. That is, the fan motor 2 can continue the stable operation regardless of the state of the rotating brush.

[0018]

As is apparent from the above embodiments, according to the present invention, a voltage detecting section for detecting an operation voltage of a drive signal generating section, and a stop signal for a rotary brush driving motor based on an output of the voltage detecting section. And a stop signal generator for outputting
When the rotation brush driving motor is locked or other abnormality occurs, the rotation brush driving motor is stopped by the stop signal. The voltage detection unit that detects the operating voltage of the generator detects the abnormal state of the rotating brush drive motor, and the stop signal generator outputs a stop signal to the rotating brush drive motor. The transformer can output a normal voltage, the drive signal generator operates normally, and the fan motor does not stop. Further, the transformer can be secured without generating abnormal heat.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a central cleaner according to an embodiment of the present invention.

FIG. 2 is an output voltage-output current characteristic diagram of a transformer of the central cleaner.

FIG. 3 is a circuit diagram of a central cleaner according to another embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional central cleaner.

FIG. 5 is a circuit diagram of the central cleaner.

FIG. 6 is an output voltage-output current characteristic diagram of a transformer of the central cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Fan motor 3 Fan motor drive part 12 Floor suction device 13 Input setting part 14 Drive signal generation part 16 Rotary brush drive motor 17 Transformer 18 Hose unit 20 Voltage detection part 21 Stop signal generation part

Claims (1)

(57) [Claims] 1. A cleaner main body installed outdoors or under stairs, and a hose unit connectable to the cleaner main body via a pipe, wherein the hose unit includes a rotary brush for cleaning a carpet and a motor for driving the same. A suction device for a floor having a built-in, an input setting unit for setting an input of a fan motor built in the cleaner body, a drive signal generation unit for converting a signal of the input setting unit into a drive signal for a fan motor, A voltage detection unit that detects an operation voltage of the drive signal generation unit; and a stop signal generation unit that outputs a stop signal of the rotary brush driving motor based on an output of the voltage detection unit. A fan motor drive unit that drives the fan motor according to a signal from a generation unit; and a transformer that supplies power to the rotary brush drive motor and the drive signal generation unit. Rolling Central cleaner to the brush driving motor abnormalities such lock is so as to stop the motor driving the rotary brush by the stop signal when an error occurs.