JPS638776B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner suitable for cleaning a wide area, and aims to improve operability.

Up until now, household or commercial vacuum cleaners have been used to clean large surfaces.
However, in these vacuum cleaners, the width of the suction nozzle is 300 mm.
Since it is around mm, it takes too much time to use one device.
A large number of vacuum cleaners and personnel were required.

The present invention eliminates these conventional drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings.

In the figure, 1 is a suction machine 3 with a built-in blower 2.
The main body of the vacuum cleaner is constructed by detachably connecting a dust collection case 5 to the lower side, that is, the suction side, via a buckle 4, and is supported on a trolley 6. The trolley 6 is obtained by extending a U-shaped handle 10 upward from a base plate 9 having front and rear wheels 7, 8.
The suction device 3 is fixed to a fixed arm 11 that protrudes forward from the middle of the handle 10. 12
13 is an intake port formed on the circumferential surface of the dust collection case 5; 14 is an exhaust port of the suction device 3; 15 is an 800-900
A rotating brush 18 is provided in the longitudinal direction of a suction chamber 17 whose lower opening is set as a suction port 16. 19 is a motor fixed to the suction nozzle 15; 20 is a belt for transmitting the rotation of this motor 19 to the rotating brush 18; and 21 is a plurality of suction pipes that communicate with the suction chamber 17 and lead out to the rear of the suction nozzle 15. The tips of these are combined into one and connected to a connecting pipe 22. The connecting pipe 22 and the air intake port 13 of the dust collecting case 5 are communicated with each other through a flexible hose 23.

Reference numeral 24 denotes a U-shaped arm in which the coating member is pivotally supported on both sides of the base plate 9 via shafts 25', and the open end thereof is bent further downward and attached to the rear surface of the suction nozzle 15. It is connected. That is, the suction nozzle 15 is supported at the tip of the arm 24, and is moved up and down by the vertical movement of the arm 24.

To explain in detail the connection structure of the arm 24 to the suction nozzle 15, the bent end of the arm 24 projects downward into a U-shaped angle 25 provided at the rear of the suction nozzle 15 with a margin. A pin 26 is installed at the end of the arm 24 so as to be parallel to the longitudinal direction of the suction nozzle 15 and is fitted into a vertical groove 27 of the angle 25. Therefore, the suction nozzle 15 can be freely depressed relative to the arm 24,
Moreover, it can be moved up and down.

Reference numeral 28 denotes a foot pedal attached to the other bent end of the arm 24 via a shaft 29 so as to be freely rotatable in the vertical direction. 30 has a groove 31 into which it fits. 32
33 is a spring that urges the pedal 28 counterclockwise, and 33 is a clockwise bent portion connected to the tip of the groove 31. 34 indicates a roller of the suction nozzle 15.

In the above configuration, work is performed while moving through the handle 10. In the suction nozzle 15, the dust-containing air sucked into the suction port 16 flows from the suction chamber 17 → suction pipe 21 → hose 23 → suction port 13, reaches the dust collection case 5, and then passes through the filter device 12, where dust is collected. is to be passed. Thereafter, only purified air flows into the suction device 3 and is discharged through its exhaust port 14.

During the above cleaning work, the suction nozzle 15 is connected to the arm 24.
Since it can be held down and movable up and down, it is well adapted to cleaning conditions such as unevenness of the surface to be cleaned, and ensures reliable dust collection.

Moreover, when moving the vacuum cleaner to another location, the pedal 28 is depressed. Here, the pedal 28 is connected to the shaft 29
Although it is freely rotatable about the fulcrum, rotation is initially prevented by the pin 30 fitted in the groove 31. Therefore, in response to the pedal 28, the arm 2
4 rotates upward, and from this the suction nozzle 1
5 also rises and separates from the surface to be cleaned.

Further, when the pedal 28 is pressed, the pin 30 is inserted into the groove 31.
It is displaced relatively upwardly within the center and is stopped when it comes into contact with its upper end. However, since the pedal 28 is biased counterclockwise by the spring 32, the pin 30 is now attached to the bent portion 33 of the groove 31.
The pedal 28 rotates as if it were inserted into the pedal 28, and even if the external force is removed, the pedal 28 is locked in that position. From the above, when moving the vacuum cleaner, use suction nozzle 1.
5 does not get in the way and allows smooth operation. Further, the suction nozzle 15 can be lowered by rotating the pedal 28 clockwise to disengage the pin 30 and the bent portion 33.

In the above embodiments, an electric type was described as the drive for the rotating brush, etc., but other sources such as a prime mover may be used, and the drive source is not specified.

As described above, according to the present invention, a suction nozzle with a wide width can be used, and even a wider surface to be cleaned can be efficiently cleaned without requiring manual labor. Also, if the suction nozzle hits a protruding part of the surface to be cleaned during cleaning, the nozzle can be raised by pressing the bent side of the arm with your foot. When moving the nozzle to another location, the nozzle can be held in the raised position by operating a locking mechanism, thereby greatly improving operability and usability.

Moreover, since the suction nozzle is movably attached to the arm, it adapts well to the surface to be cleaned, ensuring reliable cleaning.

[Brief explanation of the drawing]

Fig. 1 is a front view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a partially cutaway front view,
FIG. 4 is a top view, and FIG. 5 is a sectional view of the suction nozzle attachment part. 1...Vacuum cleaner body, 3...Suction machine, 6...Dolly, 12...Filter device, 15...Nozzle,
24...Arm.

Claims (1)

[Claims] 1 A vacuum cleaner main body having a filter device between a suction machine and a dust collection part, a trolley for moving this vacuum cleaner main body, a rotating brush and a drive source for driving this rotating brush, and the above-mentioned cleaning It is equipped with a wide suction nozzle that communicates with the dust collection part of the main body of the vacuum cleaner, and a flexible hose that connects this suction nozzle with the intake port of the main body of the vacuum cleaner, and the suction nozzle is pivotally connected to the trolley in the middle. It is movably attached between both ends of a U-shaped arm that can swing freely, and the bent side of the other end of the arm is located at the rear of the vacuum cleaner body. A vacuum cleaner equipped with a lock mechanism that maintains the suction nozzle in an elevated state.