JPH07299018A - Floor surface cleaner - Google Patents

Abstract

PURPOSE:To provide a floor surface cleaner which never leave dust or waste water containing detergent, and is improved in washing performance. CONSTITUTION:This floor surface cleaner has a driving wheel 2 in the lower surface center of a truck 1, and a front driven wheel 3 and a rear driven wheel 4 in the front and rear, respectively, and a brush unit G having a motor is installed between the driving wheel 2 and the front driven wheel 3. A clean water tank filled with detergent or clean water and a sealed waste water tank 6, and a vacuum pump 7 are provided on the truck 1, and the upper part of the front side surface of the waste water tank 6 is connected to the vacuum pump 7 through a suction duct 8. A suction nozzle 9 for sucking the waste water and dust on a floor surface is arranged on the rear part of the truck 1 substantially in the width of the truck 1, and connected to the upper part of the rear side surface of the waste water tank 6 through a suction pipe 10. A second suction nozzle 11 is arranged between the front driven wheel G and the brush unit 5 and connected to the upper part of the front side surface of the waste water tank 6 through a second suction pipe 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor cleaner, and more particularly to a dust suction nozzle having a double structure.

[0002]

2. Description of the Related Art A conventional floor cleaning machine will be described with reference to FIG. In FIG. 3, 1 is a trolley, 2 is a drive wheel, 3 is a front driven wheel, 4 is a rear driven wheel, and 5 is a brush unit that has a motor (not shown) and is a combination of two circular brushes.
Numeral 6 is a sewage tank of the water tanks mounted on the trolley 1. The sewage tank 6 is connected to a front upper part of the sewage tank 6 via a vacuum pump 7 and a suction duct 8, and 9 is a suction nozzle for sucking dust. It is connected to the upper rear surface. When the floor cleaning machine is automatically driven by the drive wheels 2, the cleaning solution or fresh water is poured onto the floor surface in front of or inside the brush unit 5 from a fresh water tank (not shown), and the floor surface is cleaned and polished. Dirty residual water, suction nozzle 9
Is sucked by the vacuum pump 7 into the dirty water tank 6 at a low pressure. However, when there is a lot of cotton dust or sand dust on the floor surface, it is difficult to remove the cleaning liquid from the dust surface and the suction nozzle 9 cannot suck the cleaning liquid. There was a problem that caused it.

[0003]

SUMMARY OF THE INVENTION In order to solve the above problems, it is an object of the present invention to provide a floor cleaning machine having an improved cleaning ability that does not leave dust and dirty water containing cleaning liquid. And

[0004]

According to the present invention, a pair of drive wheels are provided at the center, and a fresh water tank, a waste water tank, a vacuum pump, etc. are mounted on a trolley having front and rear driven wheels, and the drive wheels are Install a brush unit with a motor between the front driven wheels,
In the floor cleaning machine, the suction duct connected to the vacuum pump is connected to the upper front part of the sealed wastewater tank, and the suction pipe of the suction nozzle arranged at the rear end of the trolley is connected to the upper rear part of the floor cleaning machine. A second suction nozzle is disposed between the driven wheel and the brush unit, and a second suction pipe is connected to an upper portion of the front surface of the waste water tank.

[0005]

According to the present invention, the second suction nozzle is provided between the front driven wheel and the brush unit and connected to the dirty water tank connected to the vacuum pump, so that the dry dust is injected before the cleaning liquid is injected. Can be sucked in advance, and only the dirty water after polishing which is not sucked by dust can be sucked by the suction nozzle at the rear.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. A drive wheel 2 is provided at the center of the lower surface of the trolley 1, front and rear driven wheels 3 and 4 are provided at the front and rear, and a brush unit 5 having a motor is mounted between the drive wheel 2 and the front driven wheel 3. Although not shown, a fresh water tank filled with a cleaning liquid or fresh water, a sealed dirty water tank 6 and a vacuum pump 7 are mounted on the trolley 1, and a vacuum pump 7 and a suction duct 8 are provided above the front side surface of the dirty water tank 6. Connected through. A suction nozzle 9 for sucking dirty water and dust on the floor is arranged in the rear of the truck 1 in the width of the truck 1, and is connected to the upper rear side surface of the dirty water tank 6 via a suction pipe 10. A second suction nozzle 11 is arranged between the front driven wheel 3 and the brush unit 5, and is connected to the upper part of the front side surface of the dirty water tank 6 via a second suction pipe 12. From the second suction nozzle 11 to the second suction pipe 12 in the sewage tank 6 whose pressure has become low by the vacuum pump 7 due to the automatic traveling by the drive wheel 2.
The dried dust is absorbed in advance through the brush unit 5, a cleaning liquid or fresh water is poured into the brush unit 5 from the fresh water tank along with the rotation of the brush, the floor surface is cleaned and polished, and the dirty residual water is sucked from the suction nozzle 9.

[0007]

According to the present invention, by arranging the second suction nozzle in front of the brush unit having the water injection port, the dry dust is absorbed in advance before the cleaning liquid is injected, and is not absorbed by the dust. Only the dirty water after polishing can be sucked up by the suction nozzle at the rear, and the cleaning performance can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the outline of a floor cleaning machine according to an embodiment of the present invention.

FIG. 2 is a back view showing an outline of a floor cleaning machine according to an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing an outline of a conventional floor cleaning machine.

[Explanation of symbols]

 3 Front driven wheel 5 Brush unit 6 Sewage tank 7 Vacuum pump 8 Suction duct 9 Suction nozzle 10 Suction pipe 11 Second suction nozzle 12 Second suction pipe

Claims (1)

[Claims] 1. A pair of drive wheels is provided in the center, and a fresh water tank, a waste water tank, a vacuum pump, etc. are mounted on a trolley having front and rear driven wheels, and a motor is provided between the drive wheel and the front driven wheel. A floor which is equipped with a brush unit and which has a suction duct connected to a vacuum pump connected to the upper front part of the sealed wastewater tank and a suction pipe of a suction nozzle arranged at the rear end of the trolley connected to the upper rear part. In the surface cleaner, a second suction nozzle is arranged between the front driven wheel and the brush unit, and a second suction pipe is connected to an upper part of the front surface of the waste water tank. .