JPH06335443A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide a vacuum cleaner which can reduce the number of leading wires to be inserted into the hose. CONSTITUTION:The vacuum cleaner is provided with a vacuum cleaner main body 11 with an electric blower 15 built in, a suction opening body 22 with a brush motor 24, a hose 20 connected to the vacuum cleaner main body and the suction opening body, power source supply wires 38 and 39 inserted in the hose 20 and to supply electric power from the vacuum cleaner main body to the electric motor and operation switches S1-S4 placed on the operation section at hand 31 equipped on the hose 20 and to control the electric blower 15 and the brush motor 24. Further an operation control device 60 to transmit the operation signal issued by operation of the operation switches S1-S4 to the power source supply wires 38 and 39 is installed, where the operation control device 60 and the brush motor 24 share a common electric power source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner which controls an electric blower provided on an electric cleaning body or an electric motor provided on a suction port by operating an operation switch provided on a hand operation portion of a hose. Regarding

[0002]

2. Description of the Related Art Conventionally, an electric cleaning system is provided with a rotary brush on a suction port body, and the rotary brush is rotated by an AC brush motor to forcibly suck dust adhering to a cleaning object. The machine is known. In such an electric vacuum cleaner, an operation switch is provided on the hand operation section of the hose,
By operating this operation switch, the electric blower and the brush motor of the electric vacuum cleaner body are controlled to improve the operability.

[0003]

However, in such an electric vacuum cleaner, a power supply line for supplying AC power to the brush motor and a signal line for controlling the electric blower or the electric motor by the operation switch are used. DC power line total of 4
I'm running a conductor of a book through a hose. For this reason, there is a problem that the hose becomes heavy and large and the cost increases.

The present invention has been made in view of the above problems, and an object thereof is to provide an electric vacuum cleaner capable of reducing the number of conducting wires passing through a hose.

[0005]

In order to achieve the above-mentioned object, the present invention forcibly sucks dust adhering to an object to be cleaned and a vacuum cleaner main body having an electric blower built therein and a rotary cleaning member. A suction port body having an electric motor for rotating, a hose having one end connected to the vacuum cleaner body and the other end connected to the suction port body, and a hose arranged on the hose from the vacuum cleaner body to the electric motor. In a vacuum cleaner provided with a power supply line for supplying electric power and an operation switch for controlling the electric blower or the electric motor, which is installed in a hand operation unit provided on the other end side of the hose, in the operation switch, It is characterized in that a hand operation control means for sending an operation signal by an operation to the power supply line is provided, and the power supply of the hand operation control means and the power supply of the electric motor are made common.

[0006] Further, an electric cleaner body having an electric blower built therein, a suction port body having an electric motor for forcibly sucking dust adhering to the object to be cleaned and rotating the rotary cleaning body, and one end of which is the electric machine A hose that is detachably connected to the cleaner body and the other end is detachably connected to the suction port body; and a power supply line that is disposed on the hose and that supplies electric power from the electric vacuum cleaner body to the electric motor. In an electric vacuum cleaner equipped with an operation switch for controlling the electric blower or the electric motor, which is installed in a hand operation unit provided on the other end side of the hose, the AC current supplied to the electric vacuum cleaner body is rectified. Then, the transformer rectification means for supplying the rectified current to the power supply line and the positive side and the negative side of the power supply line are connected, and the suction port body is disconnected from the other end of the hose. A load for supplying a rectification current to the source supply line, and a hand operation control means for generating a pulse signal on the power supply line by intermittently rectifying the rectification current of the power supply line based on an operation signal by operating the operation switch; Current detection means for detecting a current flowing through the electric motor, driving the electric motor based on a pulse signal of the power supply line and a current detected by the current detection means, and driving the electric blower according to the pulse signal. Is provided, and the power source of the hand operation control means and the power source of the electric motor are made common.

[0007]

According to the present invention, the power source of the hand operation control means and the power source of the electric motor are made common by the above construction, and the hand operation control means sends the operation signal by the operation of the operation switch to the power supply line. There can be two conductors running through the hose.

Further, the transformer rectification means rectifies the alternating current supplied to the main body of the electric vacuum cleaner and supplies the rectified alternating current to the power supply line, and the hand operation control means flows an operation signal by the operation of the operation switch to the power supply line. The electric current is converted into a pulse signal which is intermittently sent to the main body of the electric vacuum cleaner, the electric current detection means detects the electric current flowing through the electric motor, and the electric control means detects the pulse signal of the power supply line and the electric current detected by the electric current detection means. The drive of the electric motor and the drive of the electric blower are controlled according to the pulse signal thereof. Further, since the load is connected to the positive side and the negative side of the power supply line, current flows in the power supply line even if the suction port body is removed from the other end of the hose, so that the electric power is supplied by operating the operation switch. It becomes possible to control the blower.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an electric vacuum cleaner according to the present invention will be described below with reference to the drawings.

In FIG. 1, 11 is a vacuum cleaner body,
Inside the main body 11, a dust collecting filter 13 installed in the dust collecting chamber 12, an electric blower 15 for making the dust collecting chamber 12 a negative pressure, and the like are provided. Further, the main body 11 is provided with a connection port 15 communicating with the inside of the dust collecting filter 13.

Reference numeral 20 is a hose, and one end of the hose 20 is detachably connected to the connection port 15. Hose 20
A suction port body 22 is detachably connected to the other end of the through an extension pipe 21.

The suction port body 22 is provided with a rotary brush 23, which is a rotary cleaning body, and a brush motor (electric motor) 24, which is a DC motor that rotates the rotary brush 23.

Reference numeral 31 is a hand operation section provided on the other end side of the hose 20. On the hand operation section 31, operation switches S1 to S3 for setting the strength of the electric blower 15, medium and weak, and a brush motor 24 are turned on / off. An operating switch S4 is provided for making it. Reference numeral 32 is a handle portion.

Then, the vacuum cleaner body 11 and the hose 20.
And the suction port body 22 constitute an electric vacuum cleaner.

FIG. 2 is a circuit diagram showing a configuration of a control system for controlling the electric blower 15 and the brush motor 24.
In FIG. 2, 50 is a triac for controlling the current flowing through the electric blower 15, 51 is a transformer for lowering the voltage of the AC power supply E to a predetermined voltage, and 52 is a rectifier for the AC current dropped to a predetermined voltage by the transformer 51. In this full-wave rectifier, the full-wave rectifier 52 and the transformer 51 constitute a transformer rectification means.

The plus side terminal 52a of the full wave rectifier 52 is connected to the plus terminal 24a of the brush motor 24 through the power supply line 38 passing through the hose 20, and the minus side terminal 52b of the full wave rectifier 52 has a resistor 53 and a transistor. The brush motor 24 is connected to the negative terminal 24b of the brush motor 24 via the power supply line 39, the transistor 55 and the power supply line 39. With these connections, a full-wave rectified pulsating current flows through the brush motor 24.

Reference numeral 56 is a pressure sensor for detecting the pressure in the dust collecting chamber 12. Reference numeral 53 is a current detecting resistor (current detecting means) for detecting a current flowing through the brush motor 24. The resistor 53 is also used to detect a pulse signal described later.

Reference numeral 57 denotes a main body side control device (electric control means) composed of a CPU and the like.
Controls the conduction angle of the triac 50 and the current flowing through the transistor 54 according to the pressure detected by the pressure sensor 56 and the operation pulse detected by the resistor 53. The drive force of the brush motor 24 is adjusted by controlling the current flowing through the transistor 54.

Reference numeral 58 is a smoothing capacitor for smoothing the pulsating current and supplying a constant DC voltage to the control device 57. Reference numeral 59 is for supplying a current for power supply to the hand operation section 31 when the transistor 54 is off. It is a resistance to keep. Reference numeral 55 is a switching transistor, and 60 is an operation control device (hand operation control means) composed of a CPU or the like, which outputs an operation signal by operating the operation switches S1 to S4 and turns on the transistor 55 by this operation signal. It is turned off to generate pulse signals on the power supply lines 38 and 39.

Reference numeral 61 is a resistance (load) that allows a pulse signal to be generated by passing a current through the power supply lines 38 and 39 even when the suction port body 22 is removed from the hose 20. In other words, the resistor 61 has the suction port body 22 with the hose 20.
The electric blower 15 can be controlled by operating the operation switches S1 to S4 even if the electric blower 15 is removed. 62
Is a smoothing capacitor that smoothes the pulsating voltage flowing through the power supply line 38 and supplies a constant DC voltage to the operation control device 60.

Next, the operation of the embodiment of the electric vacuum cleaner configured as described above will be described.

First, the hose 20 is connected to the electric cleaning main body 11, and the suction port body 22 is connected to the hose 20 via the extension pipe 21. Then, a power cord (not shown) is plugged into an outlet (not shown). In this state, since the operation switch S1 has not been operated yet, the transistor 5
4 is off.

On the other hand, a pulsating voltage is applied to the power supply line 38 by the transformer 51 and the full-wave rectifier 52, and this pulsating voltage becomes a constant DC voltage by the smoothing capacitors 58 and 62 and is supplied to the control devices 57 and 60. After the application, the main body side control device 57 becomes operable. Further, the operation control device 60 operates to turn on the transistor 55. Transistor 5
When the switch 5 is turned on, a weak pulsating current flows through the power supply lines 38 and 39.

Next, for example, when the operation switch S1 is turned on, the operation control device 60 turns off the transistor 55 at a timing near the peak of the pulsating current, as shown in FIG. By this turning off, the pulsating current flowing through the power supply lines 38 and 39 becomes zero, and this is detected as a voltage change generated in the resistor 53. Based on this one-time off, the main body side control device 57 controls the conduction angle of the triac 50 to weakly drive the electric blower 15.

That is, one pulse signal P1 is generated in the power supply lines 38 and 39 by turning off the transistor 55, and the control device 5 is based on this pulse signal P1.
7 will control the triac 50.

Next, for example, when the switch S4 is turned on,
The operation control device 60 turns off the transistor 55 four times in synchronization with the vicinity of the peak of the pulsating current. By turning off four times, four pulse signals P2 are supplied to the power supply lines 38, 3
9 and the resistor 53 detects the pulse signal P2. Based on the detected pulse signal P2, the control device 57 makes the transistor 54 conductive. A large pulsating current flows through the brush motor 24 due to the conduction of the transistor 54, and the brush motor 24 is rotationally driven.

The rotational force of the brush motor 24 is adjusted by controlling the current flowing through the transistor 54. This is because, for example, an adjustment switch (not shown) is provided in the operation unit 31, and the pulse signal is supplied to the power supply line 38,
39, and controls the current flowing through the transistor 54 based on this pulse signal.

When the switches S2 and S3 are turned on, two or three pulse signals flow to the power supply lines 38 and 39,
Based on the pulse signal, the control device 50
Is controlled to drive the electric blower 15 moderately and strongly.

As described above, the brush motor 24 is a DC motor, the power supply to be supplied to the brush motor 24 and the power supply to be supplied to the operation control device 60 are common, and the pulse output from the operation control device 60 is also used. Since the signal P is made to flow to the power supply line 39, only two conductors can be passed through the hose 20. Therefore, the hose 20 can be made smaller and lighter, and the hose 20 becomes inexpensive. Further, since the DC brush motor 24 is used, the brush motor 24 becomes small, and the suction port body 22 can be made small and lightweight.

FIG. 4 shows an example in which an AC brush motor M1 is used. In FIG. 4, reference numeral 70 denotes an operation control unit provided in the hand-side operation unit 31. The operation control unit 70 includes a control device 71 including a CPU and a triac 72 for controlling a current flowing through the brush motor M1 as shown in FIG.
And a signal transmitter 73 for transmitting an operation signal of a predetermined frequency to the power supply line 39.

The signal transmitter 73 superimposes an operation signal of a predetermined frequency on the AC voltage of the power supply line 39.
A predetermined DC voltage is supplied to the control device 71 by a DC conversion circuit (not shown) that converts an AC voltage into a DC voltage so that the control device 71 operates.

The control device 71 outputs an operation signal according to the operation of the operation switches S1 to S3,
By the operation of 4, the triac 72 is brought into conduction and the brush motor M1 is driven.

The operation signal output to the power supply line 39 by the signal transmitter 73 is detected by the signal detector 74 provided in the cleaner body 11, and the control unit 75 is based on the detected operation signal of the predetermined frequency. To control the conduction angle of the triac 50.

Although all of the above embodiments have been described as having a brush motor, the present invention is not limited to this and may have another electric motor.

[0035]

As described above, according to the present invention, only two conductors can be passed through the hose. Therefore, the hose can be made smaller and lighter, and the hose becomes cheaper. Further, by using a DC electric motor, the electric motor becomes small, and the suction port body can be made small and lightweight.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of an electric vacuum cleaner according to the present invention.

FIG. 2 is a circuit diagram showing a configuration of a control system of the electric vacuum cleaner.

FIG. 3 is a time chart showing the operation of the main part of the control system.

FIG. 4 is a block diagram showing the configuration of another embodiment.

FIG. 5 is a block diagram showing a configuration of an operation control unit.

[Explanation of symbols]

 11 Electric Vacuum Cleaner Main Body 15 Electric Blower 20 Hose 22 Suction Port Body 24 Brush Motor (Electric Motor) 31 Hand Control Section 38,39 Power Supply Line 51 Transformer 52 Full Wave Rectifier 53 Resistance (Current Detection Means) 57 Main Body Side Control Device ( Electric control means) 58 Smoothing capacitor 61 Resistance (load) S1 to S4 operation switch 60 Operation control device (hand operation control means)

Claims (4)

[Claims] 1. An electric vacuum cleaner body having a built-in electric blower,
A suction port body having an electric motor for forcibly sucking dust adhering to the body to be cleaned and rotating the rotary cleaning body, one end of which is connected to the electric vacuum cleaner body and the other end of which is connected to the suction port body. A hose, a power supply line provided on the hose for supplying electric power from the electric vacuum cleaner body to the electric motor, and the electric blower or the electric motor installed on a hand operation unit provided on the other end side of the hose. An electric vacuum cleaner having an operation switch for controlling, wherein a hand operation control means for sending an operation signal by the operation of the operation switch to the power supply line is provided, and a power supply for the hand operation control means and a power supply for the electric motor. An electric vacuum cleaner characterized by having in common with. 2. A rectifying means for rectifying an alternating current supplied to the main body of the electric vacuum cleaner and supplying the rectified current to the power supply line, wherein the electric motor is a direct current electric motor. The vacuum cleaner according to claim 1. 3. An electric vacuum cleaner body having a built-in electric blower,
A suction port body having an electric motor for forcibly sucking dust adhering to the object to be cleaned and rotating the rotary cleaning body, and one end thereof is detachably connected to the electric vacuum cleaner body and the other end thereof is the suction port body. Installed on the other end of the hose, a hose that is detachably connected to the hose, a power supply line that is disposed on the hose and that supplies electric power from the vacuum cleaner body to the electric motor. An electric vacuum cleaner provided with an operation switch for controlling the electric blower or the electric motor, wherein a rectifying means for rectifying an alternating current supplied to the main body of the electric vacuum cleaner and supplying the rectified current to the power supply line. And connected to the positive side and the negative side of the power supply line,
A load that causes a rectification current to flow through the power supply line when the suction port body is removed from the other end of the hose, and a rectification current for the power supply line that is interrupted based on an operation signal generated by operating the operation switch. Based on the hand operation control means for generating a pulse signal on the power supply line, the current detection means for detecting the current flowing through the electric motor, and the pulse signal on the power supply line and the current detected by the current detection means. An electric control unit for controlling the drive of the electric motor or the drive of the electric blower according to a pulse signal thereof is provided, and the power source of the hand operation control unit and the electric power source of the electric motor are common. Vacuum cleaner. 4. A full-wave rectifier for full-wave rectifying the transformer rectifying means, a smoothing capacitor for smoothing the full-wave rectified pulsating current and supplying it to the electric control means, and providing a pulse signal of the pulse signal. The vacuum cleaner according to claim 3, wherein the timing of generation is set near the top of the pulsating current.