JPH02159231A - Floor nozzle for vacuum cleaner - Google Patents

Abstract

PURPOSE:To enhance the using convenience of a floor nozzle by setting a control circuit for turning electrification of a motor ON/OFF in reply to the output change of a light receiving element along with the arrival quantity of light from a light emitting element to be reflected via a reflecting plate, and by setting a margin projected from the floor nozzle main-body bottom surface of the reflecting plate, to be smaller than a margin projected from a wheel. CONSTITUTION:When a floor nozzle main-body 1 is operated on the smoothing surface of a floor, a matted floor, or the like, then the space of H is set between the lower end 20 of a reflecting plate 19 and a floor surface, and the reflecting plate 19 is vertically set, and the light of a light emitting element 22 is reflected on the reflecting plate 19, and is moved into a light receiving element 23. Accordingly, through the output of the light receiving element 23, by a control circuit 25, electrification to a motor 10 is turned OFF. When the floor nozzle main body 1 is operated on a carpet, then by the resistance of the rough nap of the carpet, the reflecting plate 19 is warped at a base point 21, and light emitted from the light emitting element 22 is reflected in the direction of an arrow head, and is not moved into the light receiving element 23. Accordingly, by the working of the control circuit 25, the motor 10 is electrified, and an agitator 11 interlocked with a belt 15 is rotated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner equipped with an agitator driven by a motor.

BACKGROUND OF THE INVENTION In a conventional floor nozzle of this type, a power switch for driving the motor was provided in the floor nozzle main body and in the hand control section of the hose and extension pipe.

Problems to be Solved by the Invention However, the structure of the floor nozzle described above has the following problems.

■ In order to start and stop the agitator depending on the surface to be cleaned, it was necessary to turn the switch ON and OFF, making it inconvenient to use.

■ Carelessly rotating the agitator could damage the floor or tatami mats.

The present invention solves these conventional problems and provides a floor nozzle that is easy to use.

Means for Solving the Problems In order to achieve the above objects, the present invention provides a nozzle body in which an agitator and its driving motor are installed, a wheel that protrudes from the bottom surface of the floor nozzle body with a predetermined protrusion margin,
A reflecting plate made of an elastic material also protrudes from the bottom surface of the floor nozzle body, a light emitting element and a light receiving element provided opposite to this reflecting plate, and the arrival of light from the light emitting element reflected via the reflecting plate. The reflector is equipped with a control circuit that turns on and off the power to the motor in response to changes in the output of the light-receiving element in response to changes in the output of the light receiving element, and the protrusion of the reflector from the bottom of the floor nozzle body is set smaller than the protrusion of the wheels. It is something.

For production According to the above invention, the following effects can be obtained.

■When cleaning smooth cleaning surfaces such as folding doors.

Light from the light emitting element is reflected by the reflector and reaches the light receiving element. The control circuit turns off the power to the motor based on the output of the light receiving element at this time.

■When cleaning the carpet.

The reflection plate is displaced by the resistance of the carpet's pile, changing the direction of reflection of light from the light emitting element, and the amount of light reaching the light receiving element becomes zero or decreases. The control circuit turns on the power to the motor based on the output of the light receiving element at this time.

That is, in the present invention, the agitator rotates on a carpet, but is automatically controlled so as not to rotate on a smooth surface to be cleaned.

Example Examples thereof will be described below with reference to the accompanying drawings.

In the figure, the floor nozzle main body 1 is placed above the bumper 2,
It is obtained by joining the lower body members 3 and 4, and a suction chamber 6 with a suction port 5 as a downward opening is formed in the front interior thereof. A suction passage 7 is formed from the center of the suction chamber 6 and communicates with a suction joint 8 that is connected to the upper and lower body members 3 and 4 so as to be able to rise and rise freely. An extension pipe that communicates with the suction side of the vacuum cleaner via a hose is detachably connected to the suction joint 8. Reference numeral 9 denotes a power cord for a motor 10 built in a part of the rear part of the floor nozzle body 1.

Reference numeral 11 designates an agitator provided in parallel to the suction chamber 6, and reference numeral 12 designates bearings for the agitator 11 provided on both side walls of the suction chamber 6. A belt 15 is stretched between a pulley 13 provided on one side of the agitator 11 and a pulley 14 provided on the shaft of the motor 10.
It is forced to be driven by 0. 16.17
are front and rear wheels disposed at the lower part of the lower body member 4, and maintain a certain amount of protrusion from the lower surface 18 of the lower body member 4.

Reference numeral 19 denotes a light reflecting plate made of an elastic material, which projects vertically from the lower surface 18 of the lower body member 4.

The protrusion distance of this reflector 19 to the lower end 20 is set to be smaller by H than the protrusion distance of the front and rear wheels 16.17 from the lower surface 18 of the lower body member 4. Further, the reflection plate 19 can be bent back and forth from the base point 21. 2
Reference numerals 2 and 23 denote a light emitting element and a light receiving element, which are arranged on the lower body member 4 so as to be on the incident and reflected angle line of light with respect to the vertical reflection plate 19. Reference numeral 24 denotes a cover through which light passes. , which covers the light emitting and light receiving sides of the light emitting element 22 and the light receiving element 23. Reference numeral 25 denotes a control circuit that controls the energization of the motor 10 based on changes in the output of the light receiving element 23. If so, turn off the power to the motor 10.
L, if the amount of incident light is zero or decreases, motor 1
Turn on the power to 0.

In the above configuration, when the floor nozzle body 1 is operated on a smooth surface such as a floor or a tatami mat, there is a gap H between the lower end 20 of the reflector 19 and the floor surface as shown in FIG.
The reflector 19 is in a vertical position, so that the light emitting element 2
The second light is reflected by the reflection plate 19 and enters the light receiving element 23. Therefore, the control circuit 25 turns off the power to the motor IO based on the output of the light receiving element 23. Next, as shown in FIG. 6, when the floor nozzle main body 1 is operated on the carpet, the reflector plate 19 is deflected from the base point 21 due to the resistance of the carpet's pile.

Therefore, the light emitted from the light emitting element 22 is reflected in the direction of the arrow by the deflection of the reflecting plate 19, and does not enter the light receiving element 23. Therefore, the motor 10 is energized by the action of the control circuit 25, and the agitator 11, which is interlocked with the belt 15, rotates.

Effects of the Invention As described above, according to the present invention, when the floor nozzle body is operated on a carpet, the agitator automatically rotates, and when the operation is stopped or the floor nozzle body is lifted, the agitator is automatically stopped. In addition, the agitator does not rotate on a smooth surface such as a floor or a tatami mat, and does not inadvertently damage the floor surface.

Therefore, the usability of the floor nozzle can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a floor nozzle showing an embodiment of the present invention;
Figure 2 is a top view of the floor nozzle body with the upper main body member removed, Figure 3 is a sectional view, Figure 4 is a downward perspective view, Figure 5 is a circuit diagram, and Figure 6 is when cleaning a carpet. It is a sectional view of the main part. 1... Floor nozzle body, 10... Motor, 11... Agitator, 16.17...
・Wheel, 19...Reflector, 22...Light emitting element, 23...Light receiving element, 25...
control circuit.

Claims (1)

[Claims] A nozzle body in which an agitator and its driving motor are installed; a wheel that protrudes from the bottom of the floor nozzle body with a predetermined protrusion; a reflector made of an elastic material that also protrudes from the bottom of the floor nozzle body; Turning on electricity to the motor in response to a light emitting element and a light receiving element provided opposite to the reflecting plate, and a change in the output of the light receiving element due to the amount of light reaching the light emitting element reflected via the reflecting plate; A floor nozzle for a vacuum cleaner, comprising a control circuit that turns off, and in which the protrusion of the reflector from the bottom of the floor nozzle body is set to be smaller than the protrusion of the wheels.