JPH0638849U - Squeegee for floor washer - Google Patents

Abstract

(57) [Summary] [Purpose] A squeegee for floor cleaning machines that has appropriate breathability and buckling properties, and also has sound deadening properties to reduce suction noise.
Manufactured relatively easily and at low cost. [Structure] Of the inner and outer blades 12 and 13 attached to the sewage suction squeegee 10, the inner blade 12 is made of porous and flexible foam plastic such as urethane foam.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is used in the technical field of a floor cleaning machine (scrubber) that cleans the floor surface while running, and specifically, it is designed to suck the dirty water after cleaning from the floor surface and The present invention relates to an improvement of a squeegee for a floor washer collected in a tank.

[0002]

[Prior art]

 A squeegee used in a floor cleaning machine is, for example, as disclosed in Japanese Utility Model Laid-Open No. 63-18966 and Japanese Patent Application Laid-Open No. 2-17019, rubber blades on the inside and outside of the squeegee are separated from each other in the front and rear. The rubber blades are flat blades, which are designed to collect the dirty water on the floor surface into the dirty water tank by attaching suction pipes and hoses through the pipes and hoses within the space between these blades. If you use, the lower edge of the blade will be in close contact with the floor surface and air will not flow in if the floor surface is flat, and if the floor surface is flat, the floor surface will be uneven. Since the blade is turned up and air leakage occurs, the static pressure inside the squeegee is reduced and a sufficient suction action cannot be exerted. Therefore, as described in the above-mentioned publications, or as shown in FIG. 4 and FIG. The thus each issue of the above on the provision of the inverted U-shaped notch groove (notch) was resolved into the bottom edge of the blade.

That is, in FIGS. 4 and 5, A is a plate constituting a squeegee, B and C are rubber blades on the inside and outside attached to the inside of the plate A by a supporter E, Bn and Cn. Is a pressing piece of each blade B and C pressed by the supporter E, Ea is a vent hole formed in the supporter E so as to communicate with the suction cylinder D, and F is a connecting tool for connecting the squeegee and the machine body. The squeegee configured as described above is a mechanism for moving the blower suction operation through the suction cylinder D into the space between the inner and outer rubber-like blades B and C, while moving rightward in the drawing together with the machine body to suck in dirty water. In addition, the bottom edge of the inner blade B is provided with notched grooves Ba for ventilation, which are formed in an inverted U-shape in order to have a buckling property. Air flow between C and C It is configured so that it can be inserted and exhibits appropriate flexibility with respect to the uneven surface to prevent air leakage.

[0004]

[Problems to be solved by the device]

 However, in the squeegee in which the inner blade B is provided with the notch groove Ba as described above, if the number of the notch groove Ba is increased or the notch is greatly cut out to make the entire area too large, the air flow amount increases. There is a problem that the static pressure inside the squeegee decreases, and the efficiency of sucking in sewage decreases, and on the contrary, if this whole area is made small, there is a problem that sufficient ventilation and buckling effects cannot be obtained. The processing was very troublesome.

Further, as disclosed in FIG. 9 of JP-A-2-17019 mentioned above, a large number of vertical grooves are provided in parallel on the outer surface of the inner blade in place of the notch grooves so that the whole is corrugated. Some squeegees are formed, but in the case of this squeegee, it may be difficult to make the cross-sectional area of the flutes formed on the inner blade according to the purpose, and the desired breathability and buckling properties may not be obtained. In addition, in the case of blades provided with these notched grooves Ba or vertical grooves, squeegee suction noise (blower suction noise) leaks to the outside from each groove portion, so this is not the same as the cleaning noise of the cleaning brush. There was a problem that a considerable amount of noise was generated during the operation due to the overlap.

[0006] Therefore, a technical problem of the present invention is to provide a squeegee for a floor cleaning machine which is easy to manufacture, can exhibit appropriate breathability and buckling property, and has a quiet suction sound. Is.

[0007]

[Means for Solving the Problems]

 Means taken in the present invention to solve the above technical problems are as follows. While running, supply the detergent liquid to the floor surface with the pressure of the pump, brush it with a washing brush to wash it, and the squeegee sucks the sewage after washing with the blower's suction action into the sewage tank. (1) Of the inner and outer blades mounted on the bottom surface of the squeegee spaced apart in the front and rear direction, at least the inner blade is porous and flexible foam plastic. Configure using.

(2) The inner blade attached to the squeegee is made of urethane foam.

[0009]

[Action]

 The above means operate as follows. That is, according to the means described in the above (1), since the notch groove or the vertical groove is not provided, the inner blade having the excellent sound deadening effect can be made very easily, and the squeegee can be cleaned by the cleaning operation. When the installed inner and outer blades bend backward (in the direction opposite to the traveling direction) due to frictional resistance due to contact with the floor surface, the inner blade configured with foam plastic has its own flexibility And the air permeability allows it to buckle moderately, and the outside air can be sucked into the squeegee, so that an appropriate static pressure is generated between both blades, that is, inside the squeegee, causing a static pressure on the floor surface. In addition to being able to efficiently suck in sewage, the inner blade flexibly follows (buckles) on uneven surfaces to reduce air leakage, making it possible to suck sewage on uneven surfaces without hindrance.

Further, according to the means described in the above (2), the squeegee has excellent flexibility and breathability, as well as sound absorption and abrasion resistance, which the urethane foam forming the inner blade has. It further enhances the function of and makes it possible to suck in sewage quietly and efficiently. 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.

[0011]

【Example】

 Hereinafter, a preferred embodiment of the squeegee for a floor cleaning machine according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view illustrating the construction of a floor cleaning machine for implementing a squeegee according to the present invention. In the figure, 1 is a machine body of the cleaning machine, and 1a and 1b are detergent liquids CW provided in the machine body 1. And each tank for sewage DW, 2 is an operation handle, 3 and 4 are wheels for traveling, 5 is a detergent liquid CW contained in the detergent tank 1a, sucked from the inlet 5a, and fed through the supply pipe 5b to the machine body. A pump for supplying to the portion of the cleaning brush 6 provided at the bottom of the unit 1, 6M is a motor for rotating the brush 6, and 7 is a suction action inside the waste water tank 1b through a suction pipe 8 standing in the waste water tank 1b. The blower 8a exerting a force is an opening / closing valve with a float 8F attached to the tip opening of the suction pipe 8. The suction force of the blower 7 acting in the waste water tank 1b through the suction pipe 8 is b this tank In the sewage tank 1b through the suction hose 9, the squeegee 10 sucks in the squeegee 10 which is connected to the rear part of the machine body 1 through the suction hose 9 exposed to the inside of the machine body 1 and is cleaned by the cleaning brush 6. Is configured to be collected.

The squeegee for a floor cleaning machine according to the present invention is used in the floor cleaning machine having the above-mentioned structure, and the details thereof will be described with reference to FIGS. 2 and 3. The middle 11 is a plate in which the pressing plates 11a and 11a are connected in series in the front and rear, and the whole has a substantially U-shaped cross section, and 12 and 13 are in a state in which a support 15 is used inside the plate 11 so as to be spaced forward and backward. Inner and outer (front and rear) blades to be attached, the outer (rear) blade 13 is made of normal rubber in a flat plate shape, while the inner (front) blade 12 is It is integrally molded using various foam plastics that are flexible and breathable, especially porous urethane foam.

Further, 12 a and 13 a are mounting portions formed on the upper ends of the blades 12 and 13 inside and outside of these, and 15 a is a vent hole formed in the support 15, which is passed through the suction hose 9 and placed on the plate 11. In the suction operation of the blower 7 which is acted on the suction cylinder 9a which is erected upright, the sewage DW on the floor surface is sucked through the ventilation hole 15a to reach between the blades 12 and 13 inside and outside, and the sewage tank 1b Is configured to be collected within. Incidentally, in FIG. 2, reference numeral 14 is a connecting tool for connecting the squeegee 10 to the rear portion of the machine body 1.

Since the squeegee for a floor washer according to the present invention has the above-described structure, the inner blade 12 attached to the squeegee 10 is made of foam plastic having flexibility and breathability such as urethane foam. Since the inner blade 12 has a moderate buckling property by being built, it can flexibly follow changes in the floor surface even if the floor surface is flat or if the floor surface has irregularities. By the suction action of the blower 7, necessary air can be taken into the squeegee 10, and sewage can be efficiently sucked to the sewage tank 1b side without lowering the static pressure due to air leakage.

Further, according to the present invention, the inner blade 12 can be made air-permeable as a whole so as to exhibit an excellent suction action at all times. In this respect, the conventional notch groove Ba shown in FIG. 4 and FIG. In the case of the provided blade B, when the bending amount of the blade B becomes large, the cross-sectional area of the notch groove Ba becomes small and the intake amount of air becomes small, so that there is a problem that the suction action of dirty water is reduced. Can produce a suction action that is several orders of magnitude better than conventional squeegees.

In addition, the squeegee according to the present invention uses foam plastic having excellent sound absorbing properties as the inner blade 12, and the inner blade 12 has no notch groove or vertical groove. It can be operated quietly without leaking to the outside. By the way, the noise reduction effect can be reduced by about 6 to 10 dB (A) for a standard squeegee, and soundproofing materials or silencers can be attached. Experiments have shown that noise can be reduced by about 3 dB (A) on average for a noise-reduction squeegee that uses a hose.

[0017]

[Effect of device]

 As described above, according to the floor cleaning machine squeegee of the present invention, even when the floor surface to be cleaned is flat or the floor surface is uneven, the inner blade is The static pressure inside the squeegee can be maintained at a specified value at all times by exhibiting excellent breathability and buckling in accordance with the above conditions. In particular, in the present invention, since the inner blade of the squeegee is made of foam plastic such as urethane foam, it is possible to collect the inner blade easily and at low cost, and at the same time, it can be recovered. By eliminating various grooves such as notch grooves and vertical grooves from the inner blade, it is possible to exhibit the advantage that it can operate quietly without leaking the suction noise of the squeegee to the outside. Fruit is extremely high.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a floor cleaning machine for carrying out a squeegee according to the present invention.

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

FIG. 3 is a front view showing a part of an inner blade used in the present invention.

FIG. 4 is a side sectional view of a conventional squeegee.

FIG. 5 is a front view showing a part of an inner blade used in a conventional squeegee.

[Explanation of symbols]

 1 Body of the washing machine 1a Detergent tank 1b Sewage tank DW Sewage 5 Pump 6 Cleaning brush 7 Blower 10 Squeegee 12 Inner blade

Claims (2)

[Scope of utility model registration request] 1. A detergent liquid is supplied to the floor surface while driving by pump pressure, and this is brushed with a cleaning brush for cleaning, and the squeegee sucks dirty water after cleaning by a suction action of a blower. In a floor washer configured to be collected in a dirty water tank, at least the inner blade of the inner and outer blades mounted on the bottom surface of the squeegee at a distance apart from each other in the front and back is formed of a foam plastic having a flexibility. A squeegee for a floor cleaning machine, which is configured by using. 2. The squeegee for a floor cleaning machine according to claim 1, wherein the inner blade attached to the squeegee is made of urethane foam.