JPH05253122A - Floor nozzle for vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide the floor nozzle for the vacuum cleaner which can improve the suction performance for refuse being rather larger than a clearance between the floor nozzle and the floor surface. CONSTITUTION:The floor nozzle for this vacuum cleaner is constituted so that, even in the case refuse being larger than a clearance between the lower part of a floor nozzle main body 7 and the floor surface G exists on the surface to be cleaned, the refuse is detected by an ultrasonic sensor 13 provided in the front part of the floor nozzle main body 7, its signal is processed by a signal processing part and an actuator 16 is operated automatically, an ascending/descending roller 15 extends downward by interlocking therewith, the front of the floor nozzle main body 7 is raised automatically, and large refuse is sucked easily by enlarging the clearance between the lower part of the floor nozzle 7 main body and the floor surface G.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner, and more particularly to a floor nozzle for a vacuum cleaner used in general households.

[0002]

2. Description of the Related Art Conventionally, a floor nozzle for an electric vacuum cleaner of this type has a structure as shown in FIGS.

Reference numeral 1 denotes an upper nozzle member 3 via a bumper 2.
And a lower nozzle member 4, and a suction port 5 was provided on the bottom surface of the lower nozzle member 4. A rotatable pipe 6 is provided behind the floor nozzle body 1 so that the floor nozzle body 1 is always parallel to the floor surface G. The air sucked from the suction port 5 is guided from the floor nozzle body 1 through the rotary pipe 6 into the cleaner body (not shown).

[0004]

In such a conventional structure, the gap t between the bottom surface of the lower nozzle member 4 and the floor surface G is set.
Was very small to increase the speed of the inhaled air. Therefore, if there is dust larger than t dimension,
There was a problem that the floor nozzle body 1 was pushed at the front part of the floor nozzle body 1 and dust could not be removed. Moreover, when trying to forcefully remove the dust, the floor nozzle body 1 had to be lifted up and sucked in each time. However, the suction power of the vacuum cleaner has become strong in recent years, and it is very heavy and inconvenient.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a floor nozzle for an electric vacuum cleaner capable of reliably sucking large dust on the surface to be cleaned.

[0006]

In order to achieve the above object, a floor nozzle for an electric vacuum cleaner according to the present invention is provided with a suction port on the bottom surface, a rotatable rotary pipe behind it, and a roller. In the front part of the floor nozzle, an ultrasonic sensor, a signal processing part, and an elevating and lowering roller which is interlocked with an actuator are provided.

[0007]

With the above configuration, even if there is dust on the floor that is larger than the gap between the lower part of the floor nozzle and the floor, the ultrasonic sensor installed in the front of the floor nozzle detects the dust and outputs the signal. The signal processing unit processes and the actuator automatically operates, and in conjunction with this, the lifting roller extends downward,
By automatically lifting the front of the floor nozzle, the gap between the lower part of the floor nozzle and the floor surface can be increased to easily suck in large dust.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A floor nozzle for an electric vacuum cleaner according to an embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 7 denotes a nozzle body composed of an upper nozzle member 9 and a lower nozzle member 10 via a bumper 8, and a relatively wide suction port 11 is provided on the bottom surface of the upper nozzle member 9. Further, a rotatable rotary pipe 12 is provided behind the nozzle body 7, an ultrasonic sensor 13 is provided in the front portion of the nozzle body 7, and the signal processing unit 1 is provided in the body 7.
4 are provided. Further, an elevation roller 15 which is freely movable up and down is provided at the front part of the main body 7, and the elevation roller 15 is interlocked with an actuator 16. A relatively large roller 17 is provided behind the floor nozzle body 7. Further, the suction port 11 is provided with an agitator 20 which is linked with a motor 18 and a belt 19.

Next, the operation of the structure of this embodiment will be described. First, in a normal use state, as shown in FIG. 1, the gap A between the lower portion of the main body 7 and the floor surface G is relatively small, and the flow velocity of air is accelerated to remove fine dust in the groove. However, if there is dust larger than the gap A in front of the floor nozzle body 7, the dust is detected by the ultrasonic sensor 13 provided in the front portion of the floor nozzle body 7, and the signal is processed by the signal processing unit 14. , The actuator 16 automatically operates as shown in FIG.
5 extends downward and the front portion of the floor nozzle body 7 is connected to the roller 17
Will be used as a fulcrum.

Therefore, as a result, the gap A with the floor surface G becomes large, and a large amount of dust can be easily sucked, so that a very convenient floor nozzle can be provided.

[0012]

As is apparent from the above description of the embodiments, according to the floor nozzle for an electric vacuum cleaner of the present invention, even if there is dust larger than the gap between the floor nozzle and the floor surface, By detecting it, the gap between the suction port and the floor surface can be enlarged, and a large amount of dust can be easily sucked in, which greatly improves usability.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a position of a lifting roller in a normal use state of a floor nozzle for an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing the position of the lifting roller when sucking in a large amount of dust.

[Figure 3] Bottom view of the same

FIG. 4 is a side sectional view of a conventional floor nozzle for an electric vacuum cleaner.

FIG. 5 is a bottom view of the same.

[Explanation of symbols]

 7 Floor Nozzle Body 9 Upper Nozzle Member 10 Lower Nozzle Member 11 Suction Port 12 Rotating Pipe 13 Ultrasonic Sensor 14 Signal Processor 15 Elevating Roller 16 Actuator 17 Roller 20 Agitator

Claims (1)

[Claims] 1. A nozzle body composed of an upper nozzle member and a lower nozzle member, and a suction port on the bottom surface of the nozzle body,
A floor nozzle provided with a rotatable rotary pipe and a roller at a rear side thereof, and provided with an ultrasonic sensor, a signal processing unit, and a vertically movable elevator roller interlocked with an actuator in a front portion of the floor nozzle. Floor nozzle for electric vacuum cleaner.