JPH06304101A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To reduce the operating physical force and to enhance the dust collection efficiency by controlling the rotational direction of a rotary brush, in the vacuum cleaner provided with a motor-driven floor suction implement having the rotary brush. CONSTITUTION:In both both ends of a moving direction limiting means 7 for allowing a movable magnet 6 to be subjected to reciprocating motion only in the forward and backward directions, a fixed magnets 8, 9 are installed so that the movable magnet 6 repels by magnetic force, respectively, and in the outside periphery, an amplifying means 11 amplifies an output of a position sensor 5 provided with a coil 10, and by an output of the amplifying means 11, a moving direction discriminating means 12 discriminates the moving direction of the movable magnet 6, and by an output of the moving direction discriminating means 12, a forward/backward control means 13 controls the rotational direction of a motor 2 for driving a rotary 4 in the same direction as the advance direction of a motor-driven floor suction implement 1, and operating physical force on a carpet can be reduced.

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 equipped with an electric floor suction tool having a rotating brush driven by an electric motor.

[0002]

2. Description of the Related Art In recent years, electric vacuum cleaners have been required to reduce the operating force of a floor suction tool that reciprocates a cleaning surface and to enhance dust collection efficiency.

Conventional vacuum cleaners of this type are shown in FIGS. 7 and 8.
The structure shown in FIG. The configuration will be described below.

As shown in the figure, the cleaner body 31 has a hose 33, an extension pipe 34 and an electric floor suction device 35 connected to a suction port 32, and a hand switch 36 is provided at the tip of the hose 33. Electric blower 3 arranged in the cleaner body 31
9 is controlled. A switch 38 for turning on and off the rotating brush 37 of the electric floor suction tool 35 is provided near the hand switch 36. This rotating brush 37
Is for scraping up the dust on the floor and increasing the suction efficiency of the dust. The electric blower 39 is controlled by the hand switch 36 and the phase control circuit 40, and the electric motor 41 of the electric floor suction tool 35 is controlled by the switch 38. That is, by changing the resistance value of the hand switch 36, the input of the electric blower 39 is changed by the phase control circuit 40, and when the switch 38 is closed, the electric power is supplied to the electric motor 41 and the electric floor suction device 35. The rotary brush 37 was designed to rotate.

[0005]

In such a conventional electric vacuum cleaner, since the rotating brush of the electric floor suction tool rotates in one direction, the degree of operation force and the amount of operation force are different in the front and rear directions. It had a problem of different dust efficiency.

The object of the present invention is to solve the above-mentioned problems, and to detect the overspeed of the floor suction device and predict the next action of the user, so that the rotation provided on the floor suction device in advance. The first object is to reduce the operating force by controlling the rotating direction of the brush.

A second object is to improve the safety by stopping the rotary brush when the floor suction tool is in the air or left unattended even if the manual switch for turning the rotary brush on and off is turned on. .

Further, by detecting the overspeed of the floor suction tool and predicting the next action of the user, the rotation direction of the rotary brush provided in advance on the floor suction tool is controlled to collect dust collection efficiency. The third purpose is to increase

A fourth object is to improve the safety by stopping the rotary brush when the floor suction tool is in the air or left unattended even if the manual switch for turning the rotary brush on and off is turned on. .

In addition, it is possible to detect the rotation direction and the rotation number of the auxiliary roller of the floor suction tool and control the rotation direction and the rotation number of the rotating brush to reduce the operation force and to increase the dust collection efficiency. The purpose is.

[0011]

To achieve the first object of the present invention, an electric floor suction tool having a rotating brush driven by an electric motor, and a manual switch for turning on and off the rotating brush are provided. And a movable magnet magnetized in the same direction as the front-back direction of the electric floor suction tool, and the movable magnet provided inside the electric floor suction tool only in the front-back direction of the electric floor suction tool. A movement direction restriction means for making it movable,
Fixed magnets fixedly installed so as to repel the movable magnets installed at the front end and the rear end of the moving direction restricting means by magnetic force, respectively, and a coil having a plurality of windings of a conductive wire provided on the outer circumference of the moving direction restricting means. An amplifying means for amplifying a signal from the coil, a moving direction judging means for judging whether the output from the amplifying means is positive or negative, and the electric floor suction by a signal from the moving direction judging means. Forward / reverse control means for controlling the rotation direction of the rotary brush electric motor is provided in the same direction as the direction of travel of the tool.

In order to achieve the second object, an electric floor suction tool provided with a rotating brush driven by an electric motor, and a manual switch for turning the rotating brush on and off,
A movable magnet magnetized in the same direction as the front-back direction of the electric floor suction tool and the movable magnet provided inside the electric floor suction tool are movable only in the front-back direction of the electric floor suction tool. The moving direction limiting means, fixed magnets fixedly installed so as to repel the movable magnets installed at the front end and the rear end of the moving direction limiting means by magnetic force, and provided on the outer circumference of the moving direction limiting means. A coil in which a conductor wire is wound a plurality of times, an amplifying means for amplifying a signal from the coil, a moving direction determining means for determining whether the output from the amplifying means is positive or negative, and a moving direction determining means. Forward / reverse control means for controlling the rotation direction of the rotary brush electric motor in the same direction as the traveling direction of the electric floor suction tool by a signal,
A second problem solving means is provided by providing a safety stopping means for stopping the rotation of the rotating brush electric motor when the signal from the moving direction determining means is not detected for a set time.

In order to achieve the third object, an electric floor suction tool provided with a rotating brush driven by an electric motor, and a manual switch for turning the rotating brush on and off,
A movable magnet magnetized in the same direction as the front-back direction of the electric floor suction tool and the movable magnet provided inside the electric floor suction tool are movable only in the front-back direction of the electric floor suction tool. The moving direction limiting means, fixed magnets fixedly installed so as to repel the movable magnets installed at the front end and the rear end of the moving direction limiting means by magnetic force, and provided on the outer circumference of the moving direction limiting means. A coil in which a conductor wire is wound a plurality of times, an amplifying means for amplifying a signal from the coil, a moving direction determining means for determining whether the output from the amplifying means is positive or negative, and a moving direction determining means. A third problem solving means is provided by providing a forward / reverse control means for controlling the rotation direction of the rotary brush electric motor in the direction opposite to the traveling direction of the electric floor suction tool by a signal.

In order to achieve the fourth object, an electric floor suction tool provided with a rotating brush driven by an electric motor, and a manual switch for turning on and off the rotating brush,
A movable magnet magnetized in the same direction as the front-back direction of the electric floor suction tool and the movable magnet provided inside the electric floor suction tool are movable only in the front-back direction of the electric floor suction tool. The moving direction limiting means, fixed magnets fixedly installed so as to repel the movable magnets installed at the front end and the rear end of the moving direction limiting means by magnetic force, and provided on the outer circumference of the moving direction limiting means. A coil in which a conductor wire is wound a plurality of times, an amplifying means for amplifying a signal from the coil, a moving direction determining means for determining whether the output from the amplifying means is positive or negative, and a moving direction determining means. Forward / reverse control means for controlling the rotation direction of the rotating brush electric motor in a direction opposite to the traveling direction of the electric floor suction tool by a signal,
A fourth problem solving means is provided by providing a safety stop means for stopping the rotation of the rotary brush electric motor when a signal from the moving direction determination means is not detected for a set time.

In order to achieve the fifth object, an electric floor suction tool provided with a rotating brush driven by an electric motor, and a manual switch for turning the rotating brush on and off,
An auxiliary roller provided below the electric floor suction tool, a magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, and a magnet provided in the vicinity of the magnet and perpendicular to the magnetizing direction. Positioned iron core, a coil in which a wire provided on the outer periphery of the iron core is wound a plurality of times, amplification means for amplifying the signal from the coil, and the rotation direction of the roller is determined by the signal from the amplification means Rotating direction discriminating means, oscillating means for supplying a pulse signal to the rotating direction discriminating means at regular time intervals, and a signal from the rotating direction discriminating means in the same direction as the traveling direction of the electric floor suction tool. The fifth problem solving means is provided by providing a forward / reverse phase control means for controlling the rotating direction and the rotating speed of the rotating brush electric motor.

Also, an electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on / off the rotary brush, and an auxiliary roller provided below the electric floor suction tool. , A magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, an iron core provided in the vicinity of the magnet in a position perpendicular to the magnetizing direction, and a conductor provided on the outer periphery of the iron core A coil wound a plurality of times, amplification means for amplifying the signal from the coil, rotation direction determination means for determining the rotation direction of the roller based on the signal from the amplification means, and rotation direction determination means for every predetermined time. An oscillating means for supplying a pulse signal to the motor, and a forward / reverse phase for controlling the rotating direction and the rotating speed of the rotating brush electric motor in the same direction as the traveling direction of the electric floor suction tool by the signal from the rotating direction determining means. control Stage and may be provided with a safety stop means for stopping the rotation of the case where the signal from the rotation direction determination means is not detected set time the rotary brush electric motor.

Further, an electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on / off the rotary brush, and an auxiliary roller provided below the electric floor suction tool. , A magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, an iron core provided in the vicinity of the magnet in a position perpendicular to the magnetizing direction, and a conductor provided on the outer periphery of the iron core A coil wound a plurality of times, amplification means for amplifying the signal from the coil, rotation direction determination means for determining the rotation direction of the roller based on the signal from the amplification means, and rotation direction determination means for every predetermined time. Oscillating means for supplying a pulse signal to the motor, and a forward / reverse phase for controlling the rotating direction and the rotating speed of the rotating brush electric motor in the direction opposite to the traveling direction of the electric floor suction tool by the signal from the rotating direction determining means. control It is also possible to provide a stage.

Further, an electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on / off the rotary brush, and an auxiliary roller provided below the electric floor suction tool. , A magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, an iron core provided in the vicinity of the magnet in a position perpendicular to the magnetizing direction, and a conductor provided on the outer periphery of the iron core A coil wound a plurality of times, amplification means for amplifying the signal from the coil, rotation direction determination means for determining the rotation direction of the roller based on the signal from the amplification means, and rotation direction determination means for every predetermined time. An oscillating means for supplying a pulse signal to the motor, and a forward / reverse phase control means for controlling the rotating direction of the rotating brush electric motor in a direction opposite to the traveling direction of the electric floor suction tool by a signal from the rotating direction determining means. , It may be provided safety stop means for stopping the rotation of the case where the signal from the rotation direction determination means is not detected set time the rotary brush electric motor.

[0019]

According to the first means for solving the above problems, the present invention provides:
The movable magnets, which are balanced by the repulsive force of the fixed magnets installed at both ends of the moving direction control means installed in the front-rear direction of the electric floor suction tool, are moved by the front-back acceleration of the electric floor suction tool. By moving slightly
A slight positive / negative electromotive force due to electromagnetic induction is generated in the coil wound around the movement direction control means, the signal is amplified by the amplification means, and the forward / backward direction determination means determines whether the electromotive force is positive or negative. The control means controls the rotating direction of the rotating brush electric motor in the same direction as the traveling direction of the electric floor suction tool.

Further, according to the second means for solving the problems, when the electric floor suction tool is in the air or in the stopped state, the auxiliary roller is stopped, so that the signal from the front-back direction determining means exceeds the set time. If not, the safety stopping means stops the rotating brush electric motor that rotates in the same direction as the traveling direction of the electric floor suction tool to ensure safety.

According to the third problem solving means, the movable magnets are balanced by the repulsive force of the fixed magnets installed at both ends of the moving direction control means installed in the front-rear direction of the electric floor suction tool. Is slightly moved by the front-back acceleration of the electric floor suction tool, so that a slight positive / negative electromotive force due to electromagnetic induction is generated in the coil wound around the outer circumference of the movement direction control means, and the signal is amplified by the amplification means. Is amplified and the forward / backward direction determination means determines positive or negative, the forward / reverse control means controls the rotation direction of the rotary brush electric motor in the direction opposite to the traveling direction of the electric floor suction tool.

According to the fourth problem solving means, when the electric floor suction tool is in the air or is in the stopped state, the auxiliary roller is stopped, so that the signal from the front-rear direction determining means exceeds the set time. If not, the safety stop means stops the electric motor for the rotating brush that rotates in the direction opposite to the traveling direction of the electric floor suction tool to ensure safety.

According to the fifth problem solving means, when the electric floor suction tool is moved back and forth during cleaning, the auxiliary roller rotates forward and backward, so that the magnet incorporated in the auxiliary roller passes near the iron core. As a result, the magnetic field of the magnet changes from the N pole to the S pole or from the S pole to the N pole in the vicinity of the iron core, and a slight positive / negative electromotive force is generated in the coil wound around the iron core by electromagnetic induction. The signal is amplified by the amplification means, the forward / backward rotation determination means determines positive or negative, and the rotation number is also detected by the oscillation means, so that the forward / reverse phase control means is in the same direction as the traveling direction of the electric floor suction tool. Controls the direction and speed of rotation of the rotating brush electric motor.

When the electric floor suction tool is moved back and forth during cleaning, the auxiliary roller rotates forward and backward, and the magnet built in the auxiliary roller passes near the iron core, so that the magnetic field of the magnet is the N pole. From the S pole to the S pole or from the S pole to the N pole and the magnetic field near the iron core changes, a slight positive and negative electromotive force due to electromagnetic induction is generated in the coil wound around the iron core, and the signal is amplified by the amplification means. The forward / backward rotation discriminating means makes a positive or negative discrimination, and the oscillating means also detects the number of revolutions, so that the forward / reverse phase controlling means rotates the rotating brush electric motor in the direction opposite to the traveling direction of the electric floor suction tool. Control direction and speed.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to (a), (b) and FIG.

As shown in the figure, the electric floor suction tool 1 comprises:
The rotating brush 4 connected to the electric motor 2 by the belt 3 is provided, and the rotating brush 4 is driven by the electric motor 2. The position sensor 5 detects the moving direction of the electric floor suction tool 1, and the movable magnet 6 is provided in the electric floor suction tool 1.
Of the moving direction limiting means 7 that reciprocates only in the front-back direction, and the fixed magnet 8 at the front end and the rear end of the moving direction limiting means 7 so as to repel the movable magnet 6 by magnetic force.
And 9 are fixedly installed, and a coil 10 in which a conductive wire is wound a plurality of times is provided on the outer periphery of the movement direction limiting means 7. The amplifying means 11 amplifies the output of the coil 10 of the position sensor 5, and the moving direction determining means 12 determines the moving direction of the movable magnet 6 based on the output of the amplifying means 11, and the moving direction determining means 12
The forward / reverse control means 13 controls the rotation direction of the electric motor 2 that drives the rotary brush 4 in the same direction as the traveling direction of the electric floor suction tool 1 by the output of the. That is, when the transistors 14 and 15 are turned on by the output of the forward / reverse control unit 13, the electric motor 2 drives the rotary brush 4 in a direction to move the electric floor suction tool 1 forward, and when the transistors 16 and 17 are turned on. The electric motor 2 drives the rotating brush 4 in a direction to move the electric floor suction tool 1 backward. The manual switch 18 turns the rotary brush 4 on and off.

The operation of the above structure will be described. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the repulsive magnetic forces of the fixed magnets 8 and 9 balance the movement. The magnet 6 moves to the rear side by the inertial force, and a slight positive electromotive force is generated in the coil 10 by the electromagnetic induction (when the movable magnet 6 is moved to the rear side by the inertial force, the setting of both ends of the coil 10 becomes positive. Then, the amplifying means 11 amplifies the output, and the moving direction determining means 12 receives the output of the amplifying means 11 so that the movable magnet 6 is generated.
Of the electric floor suction tool 1 is determined, and the forward / reverse control means 13 is in the same direction as the forward direction of the electric floor suction tool 1 based on the output of the movement direction determination means 12. The rotation direction of the electric motor 2 that drives the rotating brush 4 is controlled. That is, when the transistors 14 and 15 are turned on by the output of the forward / reverse control means 13, the electric motor 2 drives the rotary brush 4 in a direction to move the electric floor suction tool 1 in the forward direction. It rotates in the same direction as the advancing direction of the floor suction tool 1, and the operating force on the carpet can be reduced.

Regarding the next embodiment, FIG.
(B) will be described with reference to FIG. The safety stop means 19 in FIG. 3 stops the rotation of the electric motor 2 of the rotary brush 4 when the signal from the moving direction determination means 12 is not detected within the set time. Other configurations are similar to those of the first embodiment of the present invention.

The operation of the above structure will be described. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the repulsive magnetic forces of the fixed magnets 8 and 9 cause a movable balance. The magnet 6 moves to the rear side by the inertial force, and a slight positive electromotive force is generated in the coil 10 by the electromagnetic induction (when the movable magnet 6 is moved to the rear side by the inertial force, the setting of both ends of the coil 10 becomes positive. Then, the amplifying means 11 amplifies the output, and the moving direction determining means 12 receives the output of the amplifying means 11 so that the movable magnet 6 is generated.
Of the electric floor suction tool 1 is determined, and the forward / reverse control means 13 is in the same direction as the forward direction of the electric floor suction tool 1 based on the output of the movement direction determination means 12. The rotation direction of the electric motor 2 that drives the rotating brush 4 is controlled. That is, when the transistors 14 and 15 are turned on by the output of the forward / reverse control unit 13, the electric motor 2 drives the rotary brush 4 in a direction of moving the electric floor suction tool 1 in the forward direction. Further, the safety stop means 19 is the moving direction determination means 1
When the signal from 2 is not detected within the set time, the rotation of the electric motor 2 of the rotary brush 4 is stopped.

As described above, according to the second embodiment of the present invention, the rotary brush 4 rotates in the same direction as the traveling direction of the electric floor suction tool 1, the operating force on the carpet can be reduced, and the manual switch can be operated. Even if 18 is turned on, if the reciprocating motion of the electric floor suction tool 1 is stopped, the rotary brush 4 is also stopped.

Next, the forward / reverse control means 13 in FIG.
Drives the rotating brush 4 in a direction opposite to the traveling direction of the electric floor suction tool 1.

The operation of the above structure will be described. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the repulsive magnetic forces of the fixed magnets 8 and 9 cause a movable balance. The magnet 6 moves to the rear side by the inertial force, and a slight positive electromotive force is generated in the coil 10 by the electromagnetic induction (when the movable magnet 6 is moved to the rear side by the inertial force, the setting of both ends of the coil 10 becomes positive. Then, the amplifying means 11 amplifies the output, and the moving direction determining means 12 receives the output of the amplifying means 11 so that the movable magnet 6 is generated.
Of the electric floor suction tool 1 is determined, and the forward / reverse control means 13 outputs the movement direction determination means 12 so that the forward / reverse control means 13 is opposite to the forward direction of the electric floor suction tool 1. The rotation direction of the electric motor 2 that drives the rotating brush 4 is controlled. That is, when the transistors 16 and 17 are turned on by the output of the forward / reverse control unit 13, the electric motor 2 drives the rotary brush 4 in a direction to move the electric floor suction tool 1 backward.

As described above, according to the third embodiment of the present invention, the rotating brush 4 rotates in the direction opposite to the traveling direction of the electric floor suction tool 1 to improve the dust collection efficiency of the carpet.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 1 (a), 1 (b) and 3. Figure 3
The safety stop means 19 can also stop the rotation of the electric motor 2 of the rotary brush 4 when the signal from the moving direction determination means 12 is not detected within the set time.

The operation of the above structure will be described. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the repulsive magnetic forces of the fixed magnets 8 and 9 balance the movement. The magnet 6 moves to the rear side by the inertial force, and a slight positive electromotive force is generated in the coil 10 by the electromagnetic induction (when the movable magnet 6 is moved to the rear side by the inertial force, the setting of both ends of the coil 10 becomes positive. Then, the amplifying means 11 amplifies the output, and the moving direction determining means 12 receives the output of the amplifying means 11 so that the movable magnet 6 is generated.
Of the electric floor suction tool 1 is determined, and the forward / reverse control means 13 outputs the movement direction determination means 12 so that the forward / reverse control means 13 is opposite to the forward direction of the electric floor suction tool 1. The rotation direction of the electric motor 2 that drives the rotating brush 4 is controlled. That is, when the transistors 16 and 17 are turned on by the output of the forward / reverse control unit 13, the electric motor 2 drives the rotary brush 4 in a direction to move the electric floor suction tool 1 backward. Further, the safety stop means 19 is the moving direction determination means 1
The rotation of the electric motor 2 of the rotating brush 4 is stopped when the signal from 2 does not reach the set time.

As described above, according to the fourth embodiment of the present invention, the rotating brush 4 rotates in the direction opposite to the traveling direction of the electric floor suction tool 1 to improve the dust collection efficiency of the carpet and to perform the manual operation. Even if the switch 18 is turned on, if the reciprocating motion of the electric floor suction tool 1 is stopped, the rotary brush 4 is also stopped.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. 4 (a) and 4 (b) and FIG.

As shown in the figure, the electric floor suction tool 1
The rotating brush 4 connected to the electric motor 2 by the belt 3 is provided, and the rotating brush 4 is driven by the electric motor 2. The rotation direction sensor 20 detects the rotation direction of the auxiliary roller 21, and has a magnet 22 magnetized in the same direction as the rotation direction provided inside the auxiliary roller 21 and a magnetism direction provided near the magnet 22. An iron core 23 fixedly installed in a vertical position and a coil 24 in which a conductor wire is wound a plurality of times around the outer periphery of the iron core 23 are provided. In addition, the amplification means 25 amplifies the output of the coil 24 of the rotation direction sensor 20, the rotation direction determination means 26 determines the rotation direction of the magnet 22 based on the output of the amplification means 25, and the rotation direction determination means 26 causes the rotation direction determination means 26 to rotate at regular intervals. The rotation time of the magnet 22 is read by the oscillating means 27 that supplies a pulse signal to the rotating brush 4 and the forward / reverse phase control means 28 is output by the rotating direction determining means 26 in the same direction as the traveling direction of the electric floor suction tool 1. The rotation direction and the rotation speed of the electric motor 2 for driving the motor are controlled. That is, the forward / reverse phase control means 2
When the transistors 14 and 15 are turned on by the output of 8, the electric motor 2 drives the rotating brush 4 in a direction to move the electric floor suction tool 1 forward, and when the transistors 16 and 17 are turned on, the electric motor 2 is moved to the electric floor. The rotary brush 4 is driven in a direction of moving the suction tool 1 for the rearward direction. Manual switch 18
Is for turning on and off the rotating brush 4.

The operation of the above structure will be described. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the auxiliary roller 21 also rotates in the same direction, and accordingly the magnets. When 22 passes near the iron core 23, a slight electromotive force is generated in the coil 24 in the order of positive and negative due to electromagnetic induction (the setting of both ends of the coil 10 causes the magnet 22 to be positive or negative when the auxiliary roller rotates forward). Then, the amplifying means 25 amplifies the output, and the rotation direction discriminating means 26 causes the amplifying means 2 to amplify.
The rotation direction of the magnet 22 is determined by the output of the magnet 5, that is, the traveling direction of the electric floor suction tool 1 is determined, and the rotation direction determination means 26 supplies a pulse signal to the rotation direction determination means 26 by the oscillation means 27. The rotation time of 22 is read, and by the output of the rotation direction determination means 26, the forward / reverse phase control means 28 drives the rotating brush 4 in the same direction as the traveling direction of the electric floor suction tool 1, and the rotation direction and rotation speed of the electric motor 2. To control.

Here, it is assumed that the forward / reverse phase control means 28 controls the rotational speed of the rotary brush 4 in proportion to the moving speed of the electric floor suction tool 1.

As described above, according to the fifth embodiment of the present invention, the rotating brush 4 is rotated in the same direction as the advancing direction of the electric floor suction tool 1, and the moving speed is also controlled, whereby the carpet is controlled. You can reduce the operating force in.

Further, according to the safety stop means 29 in FIG. 6, the rotation of the electric motor 2 of the rotating brush 4 can be stopped when the signal from the rotation direction judging means 26 is not detected within the set time.

The operation of the above structure will be described. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the auxiliary roller 21 also rotates in the same direction, and the magnets accordingly. When 22 passes near the iron core 23, a slight electromotive force is generated in the coil 24 in the order of positive and negative due to electromagnetic induction (the setting of both ends of the coil 10 causes the magnet 22 to be positive or negative when the auxiliary roller rotates forward). Then, the amplifying means 25 amplifies the output, and the rotation direction discriminating means 26 causes the amplifying means 2 to amplify.
The rotation direction of the magnet 22 is determined by the output of the magnet 5, that is, the traveling direction of the electric floor suction tool 1 is determined, and the rotation direction determination means 26 supplies a pulse signal to the rotation direction determination means 26 by the oscillation means 27. The rotation time of 22 is read, and the output of the rotation direction determination means 26 causes the forward / reverse phase control means 30 to drive the rotary brush 4 in the same direction as the traveling direction of the electric floor suction tool 1. To control.

Here, it is assumed that the forward / reverse phase control means 30 controls the rotation speed of the rotary brush 4 in proportion to the moving speed of the electric floor suction tool 1. Further, the safety stop means 29 stops the rotation of the electric motor 2 of the rotary brush 4 when the signal from the rotation direction determination means 26 is not detected within the set time.

In this way, the rotating brush 4 rotates in the same direction as the moving direction of the electric floor suction tool 1, and the moving speed is also controlled, so that the operating force on the carpet can be reduced. Even if the manual switch 18 is turned on, if the reciprocating motion of the electric floor suction tool 1 is stopped, the rotary brush 4 is also stopped.

Next, the forward / reverse phase control means 2 in FIG.
8 can also drive the rotating brush 4 in a direction opposite to the traveling direction of the electric floor suction tool 1.

The operation of the above structure will be explained. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the auxiliary roller 21 also rotates in the same direction, and the magnets accordingly. When 22 passes near the iron core 23, a slight electromotive force is generated in the coil 24 in the order of positive and negative due to electromagnetic induction (the setting of both ends of the coil 10 causes the magnet 22 to be positive or negative when the auxiliary roller rotates forward). Then, the amplifying means 25 amplifies the output, and the rotation direction discriminating means 26 causes the amplifying means 2 to amplify.
The rotation direction of the magnet 22 is determined by the output of the magnet 5, that is, the traveling direction of the electric floor suction tool 1 is determined, and the rotation direction determination means 26 supplies a pulse signal to the rotation direction determination means 26 by the oscillation means 27. The rotation time of 22 is read, and by the output of the rotation direction determination means 26, the forward / reverse phase control means 28 drives the rotating brush 4 in the direction opposite to the traveling direction of the electric floor suction tool 1, and the rotation direction and rotation speed of the electric motor 2. To control.

Here, it is assumed that the forward / reverse phase control means 28 controls the rotational speed of the rotary brush 4 in proportion to the moving speed of the electric floor suction tool 1.

By doing so, the rotating brush 4 rotates in the direction opposite to the traveling direction of the electric floor suction tool 1 and the moving speed is also controlled, so that the dust collection efficiency of the carpet is improved.

Next, the safety stop means 29 in FIG. 6 can stop the rotation of the electric motor 2 of the rotary brush 4 when the signal from the rotation direction determination means 26 is not detected within the set time.

The operation of the above structure will be described. First, when the manual switch 18 is closed and the electric floor suction tool 1 is moved forward on the carpet, the auxiliary roller 21 also rotates in the same direction, and the magnets accordingly. When 22 passes near the iron core 23, a slight electromotive force is generated in the coil 24 in the order of positive and negative due to electromagnetic induction (the setting of both ends of the coil 10 causes the magnet 22 to be positive or negative when the auxiliary roller rotates forward). Then, the amplifying means 25 amplifies the output, and the rotation direction discriminating means 26 causes the amplifying means 2 to amplify.
The rotation direction of the magnet 22 is determined by the output of the magnet 5, that is, the traveling direction of the electric floor suction tool 1 is determined, and the rotation direction determination means 26 supplies a pulse signal to the rotation direction determination means 26 by the oscillation means 27. The rotation time of 22 is read, and by the output of the rotation direction determination means 26, the forward / reverse phase control means 30 drives the rotary brush 4 in the direction opposite to the traveling direction of the electric floor suction tool 1, and the rotation direction and rotation speed of the electric motor 2. To control.

Here, it is assumed that the forward / reverse phase control means 30 controls the rotation speed of the rotary brush 4 in proportion to the moving speed of the electric floor suction tool 1. Further, the safety stop means 29 stops the rotation of the electric motor 2 of the rotary brush 4 when the signal from the rotation direction determination means 26 is not detected within the set time.

In this way, the rotating brush 4 rotates in the direction opposite to the traveling direction of the electric floor suction tool 1 and the moving speed is also controlled to improve the dust collection efficiency of the carpet, Even if the manual switch 18 is turned on, if the reciprocating motion of the electric floor suction tool 1 is stopped, the rotary brush 4 is also stopped.

[0054]

As is apparent from the above embodiments, according to the present invention, the rotation direction of the rotating brush of the electric floor suction device is set to the traveling direction of the electric floor suction device by the signal of the moving direction determination means. Since it is possible to switch to the same direction and a moment before the direction is changed, it is possible to predict what the user wants to do next and to determine the rotation direction of the rotary brush in advance, thereby reducing the operating force.

Further, since the movement of the movable magnet is stopped when the electric floor suction tool is in the air or installed, the safety floor suction tool for the electric floor suction means is operated even when the manual switch of the rotating brush is turned on. The electric motor for rotating in the same direction as the traveling direction of is cut off, and safety can be secured.

Further, the rotation direction of the rotary brush of the electric floor suction tool can be switched to the direction opposite to the traveling direction of the electric floor suction tool by a signal from the moving direction determination means, and at a moment before the direction is changed. Therefore, it is possible to predict what the user wants to do next, determine the rotation direction of the rotary brush in advance, and improve the dust collection efficiency.

Further, since the movement of the movable magnet is stopped when the electric floor suction tool is in the air or left unattended, the safety floor suction means for the electric floor suction tool is operated even when the manual switch of the rotating brush is turned on. The electric motor for rotating in the direction opposite to the traveling direction of is cut off, and safety can be ensured.

Further, the rotation direction and the number of rotations of the rotary brush can be determined by the signal of the rotation direction determining means so that the rotation direction of the rotary brush of the electric floor suction tool is the same as the traveling direction of the electric floor suction tool. , The operation force can be reduced.

Further, since the rotation of the auxiliary roller is stopped when the electric floor suction tool is in the air or left unattended, the safety floor stopping means operates even if the manual switch of the rotating brush is turned on. The electric motor for rotating in the same direction as the traveling direction of is cut off, and safety can be secured.

Further, the rotation direction and the number of rotations of the rotary brush can be determined by the signal of the rotation direction determination means so that the rotation direction of the rotary brush of the electric floor suction device is opposite to the traveling direction of the electric floor suction device. , The operation force can be reduced.

[Brief description of drawings]

FIG. 1A is a plan view of an electric floor suction tool of an electric vacuum cleaner according to an embodiment of the present invention. FIG. 1B is a configuration diagram of a position sensor in the electric floor suction tool.

FIG. 2 is a block diagram of an electric motor control using the position sensor in FIG.

3 is a block diagram of another electric motor control using the position sensor in FIG.

FIG. 4A is a plan view of an electric floor suction tool of an electric vacuum cleaner according to another embodiment of the present invention. FIG. 4B is a configuration diagram of a position sensor in the electric floor suction tool.

5 is a block diagram of an electric motor control using the position sensor in FIG.

6 is a block diagram of another electric motor control using the position sensor in FIG.

FIG. 7 is an external view of a conventional vacuum cleaner.

FIG. 8 is a control circuit diagram of a conventional vacuum cleaner.

[Explanation of symbols]

 1 Electric Floor Suction Tool 2 Electric Motor 4 Rotating Brush 5 Position Sensor 6 Movable Magnet 7 Moving Direction Limiting Means 8, 9 Fixed Magnet 10, 24 Coil 11, 25 Amplifying Means 12 Moving Direction Discriminating Means 13 Forward / Reverse Control Means 18 Manual Switch 19, 29 Safety stop means 20 Rotation direction sensor 21 Auxiliary roller 22 Magnet 23 Iron core 26 Rotation direction determination means 27 Oscillation means 30 Forward / reverse phase control means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Yamaguchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Akihiro Kitagawa, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Akui Kato 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (8)

[Claims] 1. An electric floor suction tool including a rotating brush driven by an electric motor, a movable magnet magnetized in the same direction as the front-back direction of the electric floor suction tool, and the movable magnet is the electric motor. A moving direction restricting means for movably holding the floor suction tool in the front-rear direction, and fixed magnets fixedly installed so as to repel the movable magnets installed at the front end and the rear end of the moving direction restricting means by magnetic force. A coil having a plurality of turns of a conductor wire provided on the outer periphery of the moving direction limiting means, an amplifying means for amplifying a signal from the coil, and a moving direction for discriminating whether the output from the amplifying means is positive or negative An electric vacuum cleaner comprising a discriminating means and a forward / reverse control means for controlling the rotational direction of the rotary brush electric motor in the same direction as the traveling direction of the electric floor suction tool based on a signal from the moving direction discriminating means. . 2. The electric vacuum cleaner according to claim 1, further comprising safety stopping means for stopping the rotation of the rotating brush electric motor when the signal from the moving direction judging means is not detected for a set time. 3. A forward / reverse control means for controlling the rotating direction of the electric motor for rotary brushes in a direction opposite to the traveling direction of the suction tool for the electric floor according to a signal from the moving direction determining means. Vacuum cleaner as described. 4. An electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on and off the rotary brush, and a magnetizing device in the same direction as the front-back direction of the electric floor suction tool. A movable magnet, a moving direction restricting means that allows the movable magnet provided inside the electric floor suction tool to move only in the front-back direction of the electric floor suction tool, and a front end of the moving direction restricting means. A fixed magnet fixedly installed so as to repel each of the movable magnets installed at the rear end by a magnetic force, a coil having a plurality of windings of a conductive wire provided on the outer periphery of the movement direction limiting means, and a signal amplified from the coil. And a moving direction discriminating means for discriminating whether the output from the amplifying means is positive or negative, and a signal from the moving direction discriminating means in a direction opposite to the traveling direction of the electric floor suction tool. The rotating block An electric vacuum cleaner having a forward / reverse control means for controlling the rotation direction of the electric motor for drive and a safety stop means for stopping the rotation of the electric motor for rotary brush when a signal from the moving direction determination means is not detected for a set time. . 5. An electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on and off the rotary brush, and an auxiliary roller provided below the electric floor suction tool. , A magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, an iron core provided in the vicinity of the magnet in a position perpendicular to the magnetizing direction, and a conductor provided on the outer periphery of the iron core A coil wound a plurality of times, amplification means for amplifying the signal from the coil, rotation direction determination means for determining the rotation direction of the roller based on the signal from the amplification means, and rotation direction determination means for every predetermined time. An oscillating means for supplying a pulse signal to the motor, and a forward / reverse phase for controlling the rotating direction and the rotating speed of the rotating brush electric motor in the same direction as the traveling direction of the electric floor suction tool by the signal from the rotating direction determining means. Control means A vacuum cleaner and composed. 6. An electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on and off the rotary brush, and an auxiliary roller provided below the electric floor suction tool. , A magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, an iron core provided in the vicinity of the magnet in a position perpendicular to the magnetizing direction, and a conductor provided on the outer periphery of the iron core A coil wound a plurality of times, amplification means for amplifying the signal from the coil, rotation direction determination means for determining the rotation direction of the roller based on the signal from the amplification means, and rotation direction determination means for every predetermined time. An oscillating means for supplying a pulse signal to the motor, and a forward / reverse phase for controlling the rotating direction and the rotating speed of the rotating brush electric motor in the same direction as the traveling direction of the electric floor suction tool by the signal from the rotating direction determining means. With control means Vacuum cleaner comprising a safety stop means for stopping the rotation of the case where the signal from the rotation direction determination means is not detected set time the rotary brush electric motor. 7. An electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on and off the rotary brush, and an auxiliary roller provided below the electric floor suction tool. , A magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, an iron core provided in the vicinity of the magnet in a position perpendicular to the magnetizing direction, and a conductor provided on the outer periphery of the iron core A coil wound a plurality of times, amplification means for amplifying the signal from the coil, rotation direction determination means for determining the rotation direction of the roller based on the signal from the amplification means, and rotation direction determination means for every predetermined time. Oscillating means for supplying a pulse signal to the motor, and a forward / reverse phase for controlling the rotating direction and the rotating speed of the rotating brush electric motor in the direction opposite to the traveling direction of the electric floor suction tool by the signal from the rotating direction determining means. Control means A vacuum cleaner and composed. 8. An electric floor suction tool provided with a rotary brush driven by an electric motor, a manual switch for turning on and off the rotary brush, and an auxiliary roller provided below the electric floor suction tool. , A magnet provided inside the auxiliary roller and magnetized in the same direction as the rotating direction, an iron core provided in the vicinity of the magnet in a position perpendicular to the magnetizing direction, and a conductor provided on the outer periphery of the iron core A coil wound a plurality of times, amplification means for amplifying the signal from the coil, rotation direction determination means for determining the rotation direction of the roller based on the signal from the amplification means, and rotation direction determination means for every predetermined time. Oscillating means for supplying a pulse signal to the motor, and a forward / reverse phase for controlling the rotating direction and the rotating speed of the rotating brush electric motor in the direction opposite to the traveling direction of the electric floor suction tool by the signal from the rotating direction determining means. With control means Vacuum cleaner comprising a safety stop means for stopping the rotation of the case where the signal from the rotation direction determination means is not detected set time the rotary brush electric motor.