JP2583099Y2 - Squeegee for floor washer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is used in the technical field of a floor scrubber (scrubber) for brush-cleaning a floor surface while traveling. The present invention relates to an improvement of a squeegee for a floor washing machine that collects suction water from a surface and collects it in a wastewater tank.

[0002]

2. Description of the Related Art Squeegees used in floor cleaning machines include, for example, Japanese Utility Model Laid-Open No. 63-18966 and Japanese Unexamined Patent Publication No.
As disclosed in Japanese Patent No. 7019, inner and outer rubber blades are attached to the bottom surface of a squeegee at a distance from each other, and a suction action of a blower is exerted through a pipe and a hose in the space between these blades so that a blower is suctioned. This is a mechanism for collecting wastewater from the wastewater tank.However, when a flat blade is used as the rubber blade, the blade is strong and lacks buckling. The bottom edge is so close to the floor that no air flows in,
If the floor surface is uneven, the blades are turned up and air leaks, and the static pressure in the squeegee is reduced, so that a sufficient suction action cannot be exerted. Therefore, conventionally, as shown in the above publications or FIGS. In addition, a notch is provided at the bottom edge of the rubber blade.

That is, in FIGS. 6 and 7, A is a plate constituting a squeegee, B and C are inner and outer rubber blades mounted inside the plate A by a supporter E, and Bn and Cn are supporters. Pressing pieces of each of the blades B and C pressed by E, Ea is a ventilation hole formed in the supporter E so as to communicate with the suction tube D, and F is a connecting tool for connecting between the squeegee and the body, as described above. The squeegee thus configured is configured to move to the right in the drawing together with the fuselage while sucking sewage while exerting the suction action of the blower through the suction tube D within the space between the inner and outer rubber blades B and C. Further, a cutout groove Ba for ventilation is formed at the bottom edge of the inner blade B at intervals to provide buckling, so that air can flow between the blades B and C. Formed and To demonstrate the appropriate flexibility with respect to the uneven surface is configured to prevent leakage air.

[0004]

However, as described above, the squeegee in which the notch groove Ba is provided in the inner blade B increases or decreases the number of the notch grooves Ba in order to enhance air permeability and buckling. To increase the overall area,
There has been a problem that the flow rate of air increases, the static pressure in the squeegee decreases, and the efficiency of sucking sewage decreases.

Further, as disclosed in FIG. 9 of the above-mentioned Japanese Patent Application Laid-Open No. Hei 2-17019, the outer surface of the inner blade is formed in a wave shape in which a number of vertical grooves are juxtaposed, so that the inner blade is formed. It was thought to increase buckling, but the inner blades with the vertical grooves in this way became conversely strong and could not exhibit moderate buckling, and turned over when hitting uneven surfaces This causes air leakage, lowers the static pressure, and lowers the suction efficiency.

Accordingly, a technical problem of the present invention is to provide a certain amount of air suction function and to have an appropriate buckling property so that even if there is unevenness on the floor surface, air can be efficiently discharged without causing air leakage. An object of the present invention is to provide a squeegee for a floor washer that is devised so that suction can be performed well.

[0007]

Means taken by the present invention to solve the above technical problems are as follows. While running, the detergent liquid is supplied to the floor surface with the pressure of the pump, and the detergent liquid is brushed and washed with a cleaning brush. The squeegee sucks the washed wastewater by the suction action of the blower and collects the wastewater in the wastewater tank. (1) Of the inner and outer rubber blades which are attached to the bottom surface of the squeegee so as to be separated back and forth, at least the outer surface of the inner blade has a lower center than the left and right upper side. A plurality of grooves that are symmetrically inclined toward the side of the section should be provided side by side.

(2) On the inner and outer side surfaces of the inner blade attached to the squeegee, a plurality of grooves which are inclined symmetrically from the upper left and right sides toward the lower central portion are juxtaposed, and the inner blade is connected to the squeegee. Be configured so that it can be installed upside down.

(3) The grooves provided on both the inner and outer side surfaces of the inner blade are provided so as to be shifted from the front and back.

[0010]

The above means operates as follows. That is, according to the means described in the above (1), when the cleaning operation is started and the squeegee starts to move together with the cleaning machine, the inner and outer rubber blades attached to the squeegee cause the frictional resistance due to contact with the floor surface. In response to this, it bends backward (the direction opposite to the traveling direction), but at this time, the inner blade buckles moderately due to the symmetrically inwardly inclined groove formed on its outer surface,
In addition, since air is sucked toward the inner center of the squeegee through these grooves, an appropriate static pressure is generated between both blades, that is, inside the squeegee, so that sewage on the floor surface can be efficiently sucked. In addition, since the inner blade flexibly follows (buckles) the uneven grooves on the uneven surface to reduce air leakage, it is possible to suck sewage without any trouble even on the uneven surface.

Further, according to the means described in the above (2),
Since the groove is similarly formed on the back surface of the inner blade, if the outer lower edge of the blade is worn due to use and the groove becomes shallow, it can be turned upside down and attached to the squeegee for reuse.

Further, according to the means described in the above (3), the buckling of the inner blade can be further enhanced by the grooves formed on both the front and back surfaces of the inner blade, and the grooves on the front and back surfaces are alternately positioned. Since the grooves are staggered, the grooves are deeply recessed, so that the air circulation and the buckling of the blades are further enhanced, so that an excellent suction effect can be exhibited. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the squeegee for a floor washer according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view illustrating the configuration of a floor cleaning machine that implements a squeegee according to the present invention. In the drawing, reference numeral 1 denotes the body of the cleaning machine, and 1a and 1b denote detergent liquids CW provided in the body 1. And tanks for sewage DW, 2 for operating handles, 3 and 4 for running wheels, 5 for sucking the detergent liquid CW contained in the detergent tank 1a from the inlet 5a and supplying pipe 5b.
A pump for supplying to the portion of the cleaning brush 6 provided on the bottom of the body 1 through the pump, 6M is a motor for rotating the brush 6, and 7 is suctioned into the sewage tank 1b through a suction pipe 8 provided upright in the sewage tank 1b. The blower 8a which acts is a float 8 attached to the tip end of the suction pipe 8.
The suction force of the blower 7, which is an open / close valve with F, acting on the inside of the sewage tank 1 b through the suction pipe 8,
Suction hose 9 with front end port 9b facing this tank 1b
Through the squeegee 10 connected to the rear part of the machine body 1, the squeegee 10 sucks the sewage washed with the cleaning brush 6 and collects the sewage through the suction hose 9 into the sewage tank 1 b.

The squeegee for a floor washer according to the present invention is used in a floor washer having the above-described structure. The details will be described with reference to FIGS. 2 to 5. The middle 11 is a plate having a substantially U-shaped cross section in which the pressing plates 11a, 11a are continuously provided at the front and rear, and 12 and 13 are mounted inside the plate 11 with a support 15 at an interval in the front and rear. Inner and outer (front and rear) rubbery blades, 12a and 13a are mounting portions formed at the upper end of the inner and outer blades 12, 13;
a is a ventilation hole formed in the support 15, and the suction operation of the blower 7 acting on the suction cylinder 9 a standing on the plate 11 through the suction hose 9 is performed by the ventilation hole 15.
a, the sewage DW on the floor surface is sucked between the inner and outer blades 12 and 13 and is collected in the sewage tank 1b.

The above-mentioned inner and outer blades 12, 13
The mounting portions 12a and 13a are made symmetrically on both sides.
In particular, the inner blade 12 is configured so that it can be used by attaching it to the plate 11 by turning it over as necessary. In FIGS. 2 and 3, reference numeral 14 denotes a connecting tool for connecting the squeegee 10 to a rear portion of the body 1.

Next, 12T... Are a plurality of grooves formed on the outer surface of the inner blade 12, and these grooves 12T... Are formed so as to be symmetrically inclined toward the left and right. Further, the inner surface of the inner blade 12 has grooves 12S.
However, as shown in FIG.

Since the squeegee for a floor washer according to the present invention has the above-described configuration, the squeegee for the inner blade 12 to be attached to the squeegee 10 is provided on at least the outer surface, or both the outer and inner surfaces, below the left and right upper sides. Since a plurality of grooves 12T, 12S, which are symmetrically inclined toward the side central portion, are arranged side by side and recessed, the inclined blades 12T, 12S have moderate buckling properties to the inner blade 12. , And the grooves 12T on the outer side form an air inflow passage with the floor, so that even if the floor is flat,
Even if the floor surface has irregularities, necessary air is taken into the squeegee 10 according to the suction action of the blower 7, and
This makes it possible to efficiently suck sewage into the sewage tank 1b without causing a decrease in static pressure due to air leakage.

Further, in the present invention, since the grooves 12T, 12S,... Formed in the inner blade 12 are both symmetrically inclined toward the center, the inflow of air based on the suction action of the blower 7 is achieved. 2 can be collected in the direction of the center of the squeegee 10 to which the suction hose 9 is connected, so that a higher suction action can be exhibited, and the inner and outer blades 12 and 13 buckle during operation and the state shown in FIG. Even if the state shown in FIG. 3, that is, the state where both blades 12 and 13 are greatly bent, there is almost no change in the cross-sectional area of each groove 12T... In this regard, in the case of the conventional blade B provided with the notched grooves Ba shown in FIGS. 6 and 7, when the amount of bending of the blade B increases, the cross-sectional area of the notched grooves Ba decreases and the air Since the amount placed is less, there is a problem that the suction effect of the sewage is reduced, therefore, the present invention can exhibit several stages better suction effect than conventional squeegee.

In addition, the squeegee according to the present invention has grooves 12T.
2S... Are formed and can be turned upside down by removing the support 15 from the plate 11, so that the grooves 12T on both outer sides by the cleaning operation.
Is worn out, it can be used again by using the groove 12S on the back side, and the grooves 12T and 12S on the front and back are alternately shifted in position. As shown in FIG. 5, the grooves 12T, 12S,..., 12S are deeply recessed, so that more excellent suction action and buckling action can be exhibited.

[0020]

As described above, according to the squeegee for a floor washer according to the present invention, even when the floor surface to be cleaned is flat or when the floor surface has irregularities, it is symmetrical. Since the inner blades with the inclined grooves show excellent ventilation and buckling in accordance with the condition of the floor surface, the static pressure in the squeegee can always be maintained at a predetermined value. It is capable of collecting sewage on the surface and collecting it in the sewage tank without leaking.It always sucks outside air into the center of the squeegee to efficiently suck sewage. In combination with the practicality that can be achieved, it is very suitable to be applied to floor cleaning machines.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an example of a floor cleaning machine that implements a squeegee according to the present invention.

FIG. 2 is a side sectional view of the squeegee according to the present invention.

FIG. 3 is a side sectional view showing a state when the squeegee according to the present invention is used.

FIG. 4 is a front view showing a part of the inner blade used in the present invention.

FIG. 5 is a plan sectional view showing a part of the inner blade used in the present invention.

FIG. 6 is a side sectional view of a conventional squeegee.

FIG. 7 is a front view showing a part of an inner blade used for a conventional squeegee.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body of washing machine 1a Detergent tank 1b Sewage tank DW Sewage 5 Pump 6 Cleaning brush 7 Blower 10 Squeegee 11 Plate 12 Inner blade 12T, 12S Inclined groove 15 Support

Claims (3)

(57) [Scope of request for utility model registration] 1. A detergent liquid is supplied to a floor surface with a pump pressure while running, and the detergent liquid is brushed with a cleaning brush for cleaning, and the squeegee sucks sewage after cleaning by a suction action of a blower. In a floor washer configured to be collected in a sewage tank, of the inner and outer rubber blades attached to the bottom surface of the squeegee so as to be separated back and forth, at least the outer surfaces of the inner blades are lower than the left and right upper sides. A squeegee for a floor washer comprising a plurality of grooves which are symmetrically inclined toward the center toward the side. 2. A plurality of grooves, which are symmetrically inclined from the upper left and right sides toward the lower central part, are juxtaposed on both inner and outer side surfaces of the inner blade attached to the squeegee, and the inner blade is attached to the squeegee. 2. The squeegee for a floor washer according to claim 1, wherein the squeegee is configured to be able to be mounted upside down. 3. The squeegee for a floor cleaning machine according to claim 2, wherein the grooves provided on both the inner and outer side surfaces of the inner blade are provided so as to be shifted from the front and back.