JP3264808B2 - Cleaning brush or floor polishing pad support device for floor cleaning - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor scrubber (scrubber) for cleaning or polishing a floor surface by rotating a cleaning brush or polishing pad formed in a roll while running. TECHNICAL FIELD The present invention belongs to the technical field of a polishing machine (hereinafter collectively referred to as a floor cleaning machine), and specifically relates to a supporting device for rotatably supporting a cleaning brush or a polishing pad formed in a roll shape. It is.

[0002]

2. Description of the Related Art In a conventional floor surface cleaning machine, for example,
No. 7645, a cleaning brush (glazing pad) formed in a roll shape is attached by a support arm so as to be freely rotatable up and down, as in the floor cleaning machine shown in FIG. By rotating the (polishing pad) up and down in accordance with the unevenness and steps of the floor surface, it is possible to clean or polish even the floor surface having unevenness and steps.

[0003]

However, in a floor cleaner using a roll type cleaning brush or polishing pad as described above, as the length of the roll cleaning brush or polishing pad increases, the length of the cleaning brush or polishing pad increases. If the ground pressure (contact pressure) on the left and right floors becomes unbalanced, and the floor is uneven, or there is a level difference, one end of the cleaning brush or polishing pad should be on the floor. Although the contact is strong, the other end does not contact the ground, or the contact pressure is weakened, resulting in a problem of uneven cleaning or uneven polishing.

Accordingly, a technical problem of the present invention is that even if a cleaning brush or a polishing pad is in the form of a long roll, the entire length of the cleaning brush or the polishing pad is adjusted to prevent unevenness in cleaning or polishing. It is an object of the present invention to provide a roll-shaped brush or pad support device devised so as to be able to perform a follow-up operation in accordance with the following.

[0005]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

[0006] In a floor cleaning machine configured to clean or polish the floor surface by rotating a cleaning brush or a polishing pad formed entirely in a roll shape,

(1) The left and right support arms are cantilevered at the left and right ends of the main shaft, which is laterally mounted on the bottom surface of the body of the cleaner, using mounting bushes provided at the root ends. In addition, the insertion hole for the fixing bolt for fixing each of these bushings on the main shaft side is formed as a stupid hole,
A cleaning brush or polishing pad is rotatably supported between the left and right support arms, and the main shaft is pivoted in the axial direction to attach the cleaning brush or polishing pad to the floor. And a lifting actuator that can be held at a raised position and a ground position, respectively.

(2) An air damper for adjusting the ground pressure of the cleaning brush or the polishing pad is mounted between the left and right support arms for rotatably supporting the cleaning brush or the polishing pad and the main shaft.

(3) A motor for rotating a cleaning brush or a polishing pad is attached to one of the left and right support arms, and a torsion is provided between these left and right support arms to adjust imbalance due to the weight of the motor. Installing the bar.

According to the means described in the above (1), the left and right support arms for rotatably supporting the roll-shaped cleaning brush or the polishing pad are provided within a range in which the insertion hole for the fixing bolt is formed as a stupid hole. Since each can freely rotate up and down, it is possible to flexibly cope with imbalance with respect to the left and right floor surfaces, so the total length of the cleaning brush or polishing pad is long,
Furthermore, even when the floor surface has irregularities or steps, the cleaning brush or polishing pad is operated to follow these irregularities or steps to clean the floor surface in a clean state without unevenness or uneven polishing. The cleaning brush or polishing pad can be arbitrarily switched between an ascending position and a grounding position by an ascending / descending actuator. The polisher pad is held in an elevated position, allowing the cleaner to move freely without dragging these brushes or pads.

According to the means described in the above (2), the ground pressure (contact pressure) of the cleaning brush or the polishing pad against the floor surface.
Can be constantly adjusted with an air damper, so that the floor surface can always be cleaned or polished in the same state, and the air damper can be used even when the cleaning brush or polishing pad is worn. This makes it possible to keep the ground pressure constant.

According to the means described in the above (3), the imbalance due to the weight of the rotating motor attached to one of the support arms is adjusted by the torsion bar, and the ground pressure of the cleaning brush or the polishing pad is reduced over the entire length. Allows for constant adjustment over time.

As described above, the above (1) to
The technical problem described above can be solved by the means described in (3), and the problem of the prior art can be solved.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a floor cleaning brush or a polishing pad supporting apparatus according to the present invention.

FIG. 1 is a partial cross-sectional side view of a floor cleaning machine in which a supporting device according to the present invention is implemented, FIG. 2 is a partial cross-sectional plan view illustrating a configuration of a main part thereof, and FIG. 1 and 2 are perspective views showing a partial cross-section for explaining the structure of the present invention.
Is a driving wheel, 5 is a driver's seat, 6 is a driving handle, 7
Is a tank for cleaning water and collected sewage (actually provided separately), VA is a driving battery, and 9 is a suction blower (not shown) for sucking sewage after washing. A squeegee 10 for collecting the squeegee through a vacuum hose 8 into a tank 7 for sewage is connected to the squeegee 9 at a rear portion of the vehicle body 2.

In the drawings, a boarding type floor cleaning machine 1 is described, but this is an example of an embodiment,
A self-propelled walking type in which the operator operates the floor washer 1 while walking may be used, and the selection is arbitrary.

Reference numeral 11 denotes a main shaft rotatably suspended between support plates 11a, 11a provided on the left and right sides of a bottom surface on the front side of the vehicle body 2, and 13 denotes a box-like shape having an open bottom surface. Then, brackets 12, 12 protruding from the upper left and right sides of the back plate 13a are fixed to the main shaft 11, so that the cover body is cantilevered to the bottom of the vehicle body 2 and is vertically rotatable. Is shown.

Reference numerals 16 and 17 denote left and right support arms, which are cantilevered to the left and right ends of the main shaft 11 using mounting bushes 16X and 17X provided at the root end.
S and 17S are brush shafts rotatably mounted on the distal ends of the left and right support arms 16 and 17, and 20 is mounted between the left and right brush shafts 16S and 17S while being positioned inside the cover body 13. A roller type cleaning brush, 18 is a rotating motor mounted on one support arm 16, 19 is an interlocking reel 16b mounted on the outer end of the one brush shaft 16S, and mounted on a rotating shaft of the rotating motor 18. When the rotation motor 18 is started, the cleaning brush 20 rotates in the cover body 13 in the counterclockwise rotation direction (the direction of the arrow) in FIG. The floor is configured to be cleaned.

FIG. 4 is an enlarged sectional view showing the structure of the mounting bushes 16X and 17X.
Y and 17Y are bushings 16X and 17X with main shaft 1
The fixing bolts 16Xa and 17Xa fixed to the first side are formed on the bushings 16X and 17X.
7Y, the insertion holes 16Xa, 17Xa are stupid holes, and the left and right support arms 16, 17 freely rotate up and down within the range of the stitch holes, and the left and right floor surfaces The structure is such that the cleaning brush 20 can be operated flexibly with respect to the imbalance.

Reference numeral 14 denotes a mount 2a provided near the driver's seat 5.
Actuators 2b, 2b, which are vertically rotatably mounted on the support block 14T using a support block 14T, are support legs,
A lift arm 15 movably connects a rod 14a of the actuator for elevation 14 to an elongated hole 15a provided at an upper end thereof, and has a lower end fixed to the main shaft 11, wherein the actuator for elevation 14 is provided. When the rod 14a is retracted, the lift arm 15 rotates the main shaft 11 clockwise in FIG. 1, and the cover 13 and the left and right support arms 16, 17 attached to the main shaft 11 in a cantilever manner. Turns downward toward the floor,
The lower edge of the cover 13 and the cleaning brush 20 are shown in FIGS.
As shown in (1), the grounding (contact surface) is made on the floor surface.

When the lifting actuator 14 pushes out the rod 14a, the main shaft 1
1 is configured to rotate in the counterclockwise direction in FIG. 1 to lift the cover body 13 and the cleaning brush 20 that have been grounded on the floor to the raised position. When moving the cleaning brush 20, the cleaning brush 20 can be run while keeping the lifting state apart from the floor surface in this raised state.

Reference numeral 30 denotes washing water stored in the tank 7 and water injection pipes 30a and 30b and left and right connection pipes 31a,
The spray nozzles 31 attached to the center and the left and right sides of the inner surface of the back plate 13a of the cover body 13 through the respective 31a
A water supply pump that compresses and supplies the cleaning water to the cleaning brush 31T and sprays the cleaning water to the front side of the cleaning brush 20.

Reference numeral 13T denotes a holding frame formed at the rear position of the cleaning brush 20 by bending the rear end of the cover 13 toward the inside of the cleaning brush 20 toward the cleaning brush 20. A sewage tank 2 for receiving sewage in a state where the sewage tank is located above the ground surface of the cleaning brush 20.
3 is attached, and on the side end surface of the sewage tank 23,
The water supply pipe 2 which supplies the sewage received in the sewage tank 23 to a water sprinkling pipe 26a piped below the front part of the washing brush 20, and can sprinkle the water from a large number of water sprinkling holes 26b.
6 are connected.

In addition, as shown in FIG. 1, the above-mentioned water supply pipe 26 is provided so that sewage can be spontaneously supplied from the sewage tank 23 provided above the ground surface of the cleaning brush 20 to the sprinkling pipe 26a by a head. The tip side, that is, the sprinkler tube 26a
Is gradually inclined downward so that sewage can be naturally returned to the cleaning brush 20 and reused without using the power of a pump or the like.

Numeral 25 denotes a wire mesh filter tank which is mounted in a two-stage manner by fitting the bottom of the filter into the open top of the sewage tank 23. DS denotes the trash collected by the filter tank 25. 13H is a gap in the cover 13 through which the sewage overflows from the sewage tank 23, and 24 and 24 are holders for fixing the sewage tank 23.

Reference numerals 13b and 13b denote brackets protruding from the left and right upper surfaces of the cover body 13, and 22 and 22 denote cover bodies so that the sewage splashed by the cleaning brush 20 does not leak from both sides of the cover body 13. The side seal rubber 27 attached to both side surfaces of the cleaning brush 13 guides the sewage splashed by the cleaning brush 20 to the upper opening of the filtration tank 25 in a state where the whole is inclined at the rear of the cleaning brush 20 as shown in the figure. It is a rubber blade attached.

Reference numerals 33, 33 designate mounting arms 32, 3 having their root ends fixed to the left and right ends of the main shaft 11, respectively.
The left and right air dampers rotatably attached to the distal end of the rod 2, and the lower end of each of the rods 33a, 33a has an attachment shaft 33.
The air dampers 33, 33 are attached to the left and right support arms 16, 17 using the b and 33b, and the air dampers 33, 33 maintain the ground pressure of the cleaning brush 20 attached between the support arms 16, 17 at a constant level. It is configured to be.

It has been considered that the ground pressure of the cleaning brush 20 is adjusted by the elastic force of the coil spring instead of the air dampers 33, 33. However, the coil spring has a small vertical difference due to the spring coefficient. It was found that there was a difference in the contact pressure.

Next, reference numeral 34 denotes left and right support arms 16 and 17.
A torsion bar that adjusts the ground pressure of the cleaning brush 20 to the left and right by adjusting the imbalance of the weight applied to one of the support arms 16 by mounting the motor 18 by rotation.

Since the floor washer 1 shown in the drawing has the configuration as described above, each of the spray nozzles 31, 31T,
By injecting cleaning water from 31T to the cleaning brush 20, the cleaning brush 20 cleans the floor surface and sends the cleaned sewage to the sewage tank 23 for recycling, or
Although it can be collected by being sucked by the rear squeegee 9, in particular, in the present invention, the left and right support arms 16, 17 for supporting the cleaning brush 20 are inserted into the insertion holes provided in the bushings 16 </ b> X, 17 </ b> X with respect to the main shaft 11. 16Xa, 17X
Since it is configured to be able to move up and down freely within the range of a (small hole), the roll-shaped cleaning brush 20 can flexibly cope with imbalance between the left and right floor surfaces.

Since the cleaning brush 20 can be freely switched between the ground position and the raised position by the operation of the lifting / lowering actuator 14, the cleaning brush 20 can be held at the raised position during traveling after cleaning. In addition, it is possible to solve the problem that the cleaning brush 20 recontaminates the cleaned floor surface during movement.

Further, the brush pressure of the cleaning brush 20 is adjusted and applied to the left and right by the left and right air dampers 33, 33, so that the brush pressure on the left and right ends of the roll-shaped cleaning brush can be constantly adjusted. In addition, even when the tip of the cleaning brush 20 is worn, a constant left and right brush pressure can be maintained.

Further according to the present invention, the torsion bar 34
Therefore, the unbalance due to the weight of the left and right support arms 16 and 17 can be adjusted to be constant.
This solves the problem that the ground pressure of the cleaning brush 20 becomes non-uniform, and makes it possible to always bring the cleaning brush 20 into contact with the bottom surface with a constant brush pressure.

Although only a floor cleaning machine 1 using a roll-shaped cleaning brush 20 is shown in the drawings, the supporting device according to the present invention rotates a roll-shaped polishing pad at a high speed to rotate the floor surface. Of course, the present invention also includes a support device for this polishing pad, which can be used for supporting a pad of a floor polishing machine for performing polishing.

[0035]

As described above, according to the cleaning brush or the polishing pad supporting apparatus for cleaning a floor surface according to the present invention,
Eliminates the problem of ground pressure imbalance that occurs when using a cleaning brush or polishing pad that is formed entirely in a long roll, and replaces it with a cleaning brush or polishing pad even on floors with irregularities or steps. Following operation, it can be cleaned or polished cleanly.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view of a floor cleaning machine in which a cleaning brush supporting device according to the present invention is implemented.

FIG. 2 is a partial cross-sectional plan view illustrating a configuration of a main part of the present invention.

FIG. 3 is a partial cross-sectional perspective view illustrating the configuration of the main part of the present invention.

FIG. 4 is a sectional view showing a structure of a bush portion for attaching left and right support arms to a main shaft.

[Explanation of symbols]

 2 Body 11 Main shaft 14 Elevating actuator 16, 17 Left and right support arms 16X, 17X bush 16Xa, 17Xa Insertion hole 16Y, 17Y Set bolt 18 Rotation motor 33 Air damper 34 Torsion bar

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 11/16 A47L 11/40

Claims (3)

(57) [Claims] 1. A floor cleaning apparatus configured to perform cleaning or polishing on a floor surface by rotating a cleaning brush or a polishing pad entirely formed in a roll shape. At the left and right ends of the main shaft laid horizontally on the bottom surface, the left and right support arms are supported in a cantilever manner using mounting bushes provided at the root end, and each of these bushes is connected to the main shaft side. An insertion hole for a fixing bolt to be fixed to the main shaft is formed as a stupid hole, a cleaning brush or a polishing pad is rotatably supported between the left and right support arms, and the main shaft is pivotally mounted on the main shaft. A floor-cleaning device characterized by connecting an ascending and descending actuator which can rotate in a direction to hold the cleaning brush or the polishing pad at a raised position and a ground contact position with respect to the floor surface, respectively. Support device Kiyoshi brushes or polishing pads. 2. A cleaning device according to claim 1, wherein the left and right support arms rotatably supporting the cleaning brush or the polishing pad and a main shaft.
2. The apparatus according to claim 1, further comprising an air damper for adjusting a ground pressure of the cleaning brush or the polishing pad. 3. A torsion bar for attaching a motor for rotating a cleaning brush or a polishing pad to one of the left and right support arms, and adjusting an imbalance due to the weight of the motor between the left and right support arms. The cleaning device for cleaning a floor surface or the polishing pad supporting device according to claim 1, further comprising: