JP2581264B2 - Scrubber - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scrubber for cleaning a floor with a rotating brush.

(Prior art)

Generally, there is a scrubber as one of devices for cleaning a floor surface.

As shown in FIGS. 7 and 8, the scrubber is provided with a brush 91 for cleaning the floor surface at the front of the machine base 90 so as to be rotatable in the horizontal direction. The brush 91 is a brush motor 910.
To rotate.

In addition, a squeegee 92 for collecting sewage after washing is disposed at the rear of the machine base 90. The squeegee 92 is in contact with the floor surface. As shown in FIG. 8, rollers 921 are provided at both ends in the width direction.

The brush 91 has a water supply pipe as shown in FIG.
Cleaning water is supplied from the cleaning liquid tank 93 via 931.

The squeegee 92 is connected to a collection liquid tank 94 via a suction pipe 941, as shown in FIG. The recovery liquid tank 94 is connected to a vacuum motor 95 via a duct 951.

Therefore, the recovery liquid tank 94 is operated by the vacuum motor 95.
Is maintained at a negative pressure. Since the recovery liquid tank 94 is maintained at a negative pressure in this way, the sewage once sprayed on the floor is collected by the squeegee 92 after washing, and then sucked up.

In FIG. 7, reference numeral 932 denotes a drain pipe of the cleaning liquid tank 93, 942 denotes a drain pipe of the recovery liquid tank 94, and 96.
Indicates a drive wheel of the machine base 90, 960 indicates a drive motor thereof, and 99 indicates a battery as a power source. 7 and 8, reference numeral 98 denotes an operation panel, and 981 denotes an operation handle.

[Problem to be solved]

However, in the conventional scrubber, when the floor is cleaned while turning with a small turning radius, a positional shift occurs between the locus of the brush and the locus of the squeegee.

This will be described in detail with reference to FIG.

As shown in the figure, when the scrubber turns with a small turning radius around the turning fulcrum P, the width dimension of the turning locus of the brush 91 becomes A. At this time, the width dimension of the turning locus of the squeegee 92 is B.

As is clear from the attachment, since the squeegee 92 cannot cope with the turning of the brush 91, the turning locus of the squeegee 92 has a turning radius larger than the turning locus of the brush 91. For this reason, a positional shift occurs between the width dimensions A and B of the two turning trajectories by the width dimension C.

As a result, sewage is left behind by the width dimension C. In order to collect this sewage residue,
It is necessary to run the scrubber over the remaining portion again, which lowers the work efficiency.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a scrubber that can surely guide wastewater to a squeegee.

[Solutions to solve the problem]

The present invention provides a scrubber in which a brush for cleaning a floor surface is rotatably disposed at the front of the machine base and a squeegee for collecting waste water after cleaning is disposed at the rear of the machine base. A floor wiper that extends linearly in the front-rear direction of the machine and is in contact with the floor between the brush and the squeegee, and the floor wiper is a rear end of the floor wiper when the scrubber is turned. Is located within the range of the squeegee turning trajectory, and the turning trajectory of the front end of the floor wiper is positioned outside the range of the brush turning trajectory, and is provided on both sides of the machine base. The scrubber is characterized in that the floor wipers have independent elasticity imparting mechanisms for generating an appropriate pressing force on the floor.

The most remarkable point of the present invention is that the front and rear of the machine is located between the brush located at the front of the machine to clean the floor and the squeegee located at the rear of the machine to collect the waste water after washing. That is, a floor wiper that extends in a straight line in the direction and reliably guides wastewater to the squeegee is provided.

Even when the scrubber turns with a small turning radius, the turning locus of the rear end of the floor wiper is located within the range of the turning locus of the squeegee, and the turning locus of the front end of the floor wiper is provided. Is located outside the range of the brush trajectory, and is disposed so as to surely guide sewage to the squeegee.

The floor wipers are independently provided with elasticity imparting mechanisms for generating an appropriate pressing force on the floor.

In the present invention, the floor contact portion (wiper body) of the floor wiper is formed of an elastic material such as rubber or plastic. In addition, it is desirable that both the left and right floor wipers be arranged at an angle to the machine centerline so that the distance between the wipers gradually decreases as the squeegee is approached. The floor wiper may be fixed at a fixed inclination angle or semi-fixed so that the inclination angle can be changed within a certain range.

Each floor wiper is formed as a single unit (first embodiment), and is divided into a plurality of units (second embodiment).
There is.

(Operation)

In the present invention, even when the scrubber turns with a small turning radius, the floor wiper scrapes the sewage generated by the brush floor cleaning toward the machine center.

That is, the turning trajectory of the front end of the floor wiper is located outside the range of the turning trajectory of the brush, and the turning trajectory of the rear end of the floor wiper is the trajectory to which the wastewater is swept. Therefore, the collected sewage falls within the range of the turning locus of the squeegee behind it. Therefore, the squeegee collects the sewage without leaving behind.

The floor wipers are independently provided with elasticity imparting mechanisms for generating an appropriate pressing force on the floor. Therefore, the floor wiper presses the floor with an appropriate pressure during the recovery operation of the sewage, so that the floor wiper does not float off the floor. Also, when there is a difference between the heights of the left and right floors, one does not float off the floor (FIG. 2).

(Effect)

Therefore, according to the present invention, it is possible to provide a scrubber that can reliably guide sewage to a squeegee simply by installing a relatively simple floor wiper.

〔Example〕

First Embodiment A scrubber according to an embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG.

The scrubber of this example is provided with one floor wiper 1 on each side.

In this embodiment, a floor wiper 1 is provided between the brush 91 and the squeegee 92 and is in contact with the floor on both left and right sides of the machine base 90 shown in the conventional example. The floor wiper 1 is disposed such that the turning trajectory of the rear end of the floor wiper 1 is located inside the turning trajectory of the squeegee 92 when the scrubber turns.

As shown in FIG. 2, the floor wiper 1 includes a wiper main body 11 formed in a strip shape, a mounting bracket 12 for the wiper main body 11, and a wiper arm for fixing the mounting bracket 12.
It consists of thirteen. The wiper body 11 is formed of rubber. The wiper arm 13 is formed of spring steel.

As shown in FIG. 1, the left and right floor wipers 1 are attached at a fixed angle with respect to the machine center line so that the interval gradually decreases toward the rear of the machine.

When the scrubber turns with a small turning radius, the turning locus d of the rear end portion 10 of the floor wiper 1 (however, the floor wiper on the right side is not shown) turns the squeegee 92 when the scrubber turns. Locus (in FIG. 1, the width is B
) And the floor wiper 1
Of the brush 91 is located outside the range of the turning locus A of the brush 91.

As shown in FIG. 2, a lift mechanism 2 as an elasticity imparting mechanism is connected to the floor wiper 1. The lift mechanism 2 includes a slide link 21, an intermediate link 22 pivotally connected to the slide link 21, a lever link 23 pivotally connected to the intermediate link 22, and an operation lever fixed to the lever link 23.
Consists of 24.

The wiper arm 13 is pivotally attached to the lower end of the slide link 21. The slide link 21 has an elongated hole 21.
A rivet 211 fixed to the side surface of the machine base 90 is inserted through the elongated hole 210. That is, the slide link 21 is provided to be able to move up and down with respect to the side surface of the machine base 90.

The operation lever 24 is disposed on an operation panel 98 behind the scrubber. That is, as shown in FIG. 3, a substantially U-shaped guide groove 240 is formed in the operation panel 98, and the operation lever 24 is inserted into the guide groove 240. As shown in FIG. 2, the operation lever 24 is pivoted about a rotation fulcrum 241 provided in the operation panel 98.
It is designed to rotate along the guide groove 240.

Since the scrubber of this example is configured as described above, the following effects are obtained.

That is, as shown in FIG. 2 and FIG.
Is rotated in the L direction, so that the floor wiper 1 descends on the floor via the links 21 to 23 of the lift mechanism 2. At this time, the wiper body 11 of the floor wiper 1
The elastic function of the wiper arm 13 makes contact with the floor with an appropriate pressing force. In this state, the floor is cleaned with a scrubber.

As shown in FIG. 1, when the scrubber makes a turn with a small turning radius around the turning fulcrum P, the sewage generated by the cleaning of the floor surface of the brush 91 turns into a swirl of the width A which is the turning locus of the brush 91. In the trajectory.

Next, since the floor wiper 1 is disposed behind the brush 91, the contaminated water on the inner diameter side is raked toward the center of the machine base 90 by the floor wiper 1 on the inner diameter side. As described above, since the floor wiper 1 is provided so that the swirl locus of the front end of the floor wiper 1 is out of the range of the swirl locus A of the brush 91 when the scrubber is swirled, the sewage on the outer diameter side is reduced. , Which is inside the floor wiper 1 on the outer diameter side from the beginning.

At this time, the turning locus d of the rear end 10 of the floor wiper 1
Is within the range of the turning trajectory of the squeegee 92 having the width dimension B. Accordingly, the width of the swirl locus of the brush 91 swept by the floor wiper 1 is D, and the swirl locus of the brush 91 falls within the range of the swivel locus of the squeegee 92.

In this way, the turning trajectory of the brush 91 is corrected by the floor wiper 1 so as to fall within the range of the turning trajectory of the squeegee 92.

As described above, the sewage generated by the brush 91 falls within the range of the turning trajectory of the squeegee 92.
Thus, after collecting all the wastewater without leaving any residue, the wastewater can be sucked up and collected by a suction pipe (not shown).

When the scrubber is to be moved after the cleaning operation, as shown in FIGS.
The operation is performed after the floor wiper 1 is raised by rotating in the direction.

As described above, according to the present embodiment, a scrubber that can surely guide wastewater to the squeegee 92 even when the scrubber base 90 turns with a small turning radius can be obtained.

For this reason, the operation for collecting the remaining wastewater as in the related art becomes unnecessary, and the operation efficiency can be greatly improved. Furthermore, since the scrubber can be run with the minimum turning radius, it has become possible to clean the floor in a narrow place, which was not possible before.

Second Embodiment A scrubber of this embodiment will be described with reference to FIGS.

The scrubber of this embodiment uses a floor wiper 3 in which a wiper body 31 is divided into a plurality of parts instead of the floor wiper 1 of the first embodiment.

That is, in this example, as shown in FIGS. 4 and 5, the floor wiper 3 is composed of a plurality of wiper bodies 31, a mounting bracket 32 for each wiper body 31, and a wiper arm for fixing these mounting brackets 32. It consists of 33.

The ends of the wiper body 31 are arranged so as to overlap each other. Further, the wiper arm 33 is connected to the lift mechanism (indicated by reference numeral 2 in FIG. 2) shown in the first embodiment.

 Others are the same as the first embodiment.

Since the scrubber of this embodiment is configured as described above, it exhibits the same functions and effects as those of the first embodiment.

Further, in this example, as shown in FIG. 6, the divided wiper body 31 is formed on the floor surface having undulations.
Contact smoothly. Therefore, the sewage can be reliably guided to the squeegee even on the floor having the swell.

[Brief description of the drawings]

1 to 3 show a scrubber according to a first embodiment, FIG. 1 is a plan view of the scrubber at the time of turning, FIG. 2 is a side view of a floor wiper and its lift mechanism in the scrubber, FIG. 3 is a perspective view of an operation lever of the lift mechanism, FIGS. 4 to 6 show a scrubber according to the second embodiment, FIG. 4 is a plan view of a floor wiper, and FIG. 5 is a floor wiper. FIG. 6 is an explanatory view of the operation of the floor wiper, and FIGS. 7 and 8 show a conventional scrubber.
FIG. 7 is a side sectional view of the scrubber, and FIG. 8 is a plan view of the scrubber at the time of turning. 1,3 ... Floor wiper, 11,31 ... Wiper body, 12,32 ... Mounting bracket, 13,33 ... Wiper arm, 2 ... Lift mechanism, 90 ... Machine base, 91 ... Brush, 92 …… Squeegee,

Claims (1)

(57) [Claims] 1. A scrubber in which a brush for cleaning a floor surface is rotatably disposed at a front portion of a machine base and a squeegee for collecting waste water after cleaning is disposed at a rear portion of the machine base. A floor wiper, which extends linearly in the front-rear direction of the machine and is in contact with the floor, is disposed between the brush and the squeegee. A rear end turning locus is located within the range of the squeegee turning locus, and a front end turning locus of the floor wiper is positioned outside the range of the brush turning locus. Wherein the floor wipers provided independently of each other have independent elasticity imparting mechanisms for generating an appropriate pressing force on the floor surface.