JP2003135152A - Rotary type floor surface washing brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary type floor surface washing apparatus which keeps good washing property by fitting well to the recess/projection of a floor surface and avoiding the bending of brush fibers in the case of washing the floor surface by using the brush fibers. SOLUTION: On a disk-shaped base to be rotated and driven, groups of highly dense brushes consisting of brush fibers to which abrasive grains of strong abrasive property are stuck and combined densely are formed and implanted coaxially in many lines. In the floor surface washing apparatus like this, the groups of the brushes on the side of an inner diameter have low rigidity. The groups of the brushes on the side of an outer diameter have high rigidity and are taller than the side of the inner diameter, and its outer most side projects from the outer side surface of the base on a horizontal projected surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning brush used for cleaning a floor surface and mounted on a rotary cleaning device driven by power, and more particularly, to a disc-shaped base. The present invention relates to a rotary cleaning brush in which a polishing brush is planted, and the rotation thereof polishes and cleans a floor surface.

[0002]

2. Description of the Related Art For cleaning a floor surface, a cleaning device is generally used in which a disc-shaped pad formed by embedding an abrasive material in a non-woven fabric is pressed against the floor surface while rotating. The pad has elasticity and fits on the floor,
Due to the appropriate polishing power, it works well together with the cleaning agent separately supplied to the wax layer applied to the floor surface to exert the cleaning effect. That is, depending on the mixing ratio of the abrasive in the pad, if the polishing power is large, the entire wax layer is peeled off, and if the polishing power is small, the surface of the wax layer is simply polished. Floor cleaning is accomplished by slightly polishing the top layer of the wax layer. Therefore, in the cleaning pad, in order to achieve the function of polishing only the upper layer of the wax layer, the mixing ratio of the abrasive suitable for cleaning is an important factor. On the other hand, the floor surface using the floor panel is inevitable due to the construction accuracy of the floor skeleton, and the wax layer applied to the surface layer of the floor panel is dented by the large pressure applied through the heel etc. So-called heel marks are engraved everywhere. Then, the dirt adheres to the concave portion of the floor surface and the concave portion of the heel mark. Therefore, when a conventional pad-type cleaning device is used, the pad itself holds a flat plate shape having a constant thickness and the bottom surface also holds a flat shape, so that not only the heel mark depression but also the floor panel. Since the concave portion has no polishing action, the floor surface cannot be sufficiently polished and cleaned.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in a rotary cleaning device that is rotationally driven by power of this kind, it is more familiar to the unevenness of the floor surface and the heel mark It is an object of the present invention to provide a cleaning device that can follow a depression. Therefore, the present invention achieves this object by adopting a special brush arrangement in a so-called rotary cleaning brush in which a polishing base is planted with a polishing brush. That is, usually, a method of implanting soft type 0.60 mm diameter brush fibers on a disk-shaped base is taken, but with this one, the waist of the fiber easily breaks, and the waist of the outermost brush does not break. Progress,
The detergency is deteriorated. The present invention achieves this object by increasing the rigidity of the brush on the outer diameter side based on this finding.

[0004]

Specifically, the rotary cleaning brush of the present invention has the following constitution. The first invention is
On a disk-shaped base that is driven to rotate, brush fibers with highly abrasive abrasive grains adhered to the surface of a synthetic resin fiber body at high density are made into a brush group of high density, and the brush group is In a floor cleaning brush that is concentrically planted in multiple rows and uses the brush fibers to polish and clean the floor surface, the brush group on the inner diameter side uses a synthetic resin fiber body with low rigidity, and the brush group on the outer diameter side is used. Is a synthetic resin fiber body having high rigidity, the synthetic resin fiber body of the outer diameter side brush group is made longer than the synthetic resin fiber body of the inner diameter side brush group, and the outer diameter side brush group Occupies 10 to 30% in the ratio of the length in the radial direction, and the outermost side thereof projects from the outer side surface of the base in the horizontal projection plane. In the above configuration, specific modes of the brush fiber and the brush group are shown in the following embodiments and examples, but other modes are not excluded. Nylon (polyamide resin) is preferably selected as the synthetic resin fiber, and nylon 612 is particularly preferable, but nylon 6, nylon 8,
No. 11, No. 66, No. 610, etc. are not excluded.
In addition, when the brush groups are arranged concentrically in 10 rows (20 rows), 1 to 3 rows means that "the brush group on the outer diameter side occupies 10 to 30% in the ratio of the radial length". (2-6
Column). In addition, the brush fibers of the brush group should have the same characteristics, and the diameter of the brush fiber of the outer diameter side brush group should be larger than the diameter of the brush fiber of the inner diameter side brush group. The hard brush fiber of the brush group is used, and the soft brush fiber of the inner diameter brush group is used. The 6/12 nylon fiber is used and the outer brush group of the brush group is used. The diameter of the fibers is within the range of 0.80 to 1.10 mm, and the diameter of the brush fibers of the brush group on the inner diameter side is within the range of 0.40 to 0.70 mm.

A second aspect of the invention is that a brush fiber having a highly abrasive abrasive grain adhered to the surface of a synthetic resin fiber body at a high density is mixed on a disk-shaped base that is rotationally driven to have a high density. In the floor surface cleaning brush, the brush groups are concentrically planted in a plurality of rows, and the floor surface is abraded / cleaned with the brush fibers.The brush group is formed on the lower surface of the base. The brush group on the inner diameter side is made of synthetic resin fibrous material with low rigidity, and the brush group on the outer diameter side is highly rigid. A synthetic resin fiber body is used, the synthetic resin fiber body of the outer diameter side brush group is made longer than the synthetic resin fiber body of the inner diameter side brush group, and the outer diameter side brush group is in the radial direction. The length accounts for 10 to 30%, and the outermost part is water. Made to protrude from the outer surface of the base in the projection plane, characterized in that. In the above configuration,
Specific aspects of the brush fiber and the brush group are shown in the following embodiments and examples, but other aspects are not excluded. Nylon (polyamide-based resin) is preferably selected as the synthetic resin fiber, and nylon 612 is particularly preferable, but nylons 6, 6, 8, 11,
The same 66, 610, etc. are not excluded. Further, regarding the brush planting holes, "the outer diameter side brush group occupies 10 to 30% in the radial length ratio" means that the brush groups are concentrically arranged in 10 rows (20 rows). In cases, 1-3
It is meant to occupy rows (2 to 6 rows). The brush planting holes of the brush group on the inner diameter side are drilled vertically,
At least the outermost brush planting holes of the brush group of the outer diameter side brush group should be formed obliquely outward, and the brush planting holes of the inner diameter side brush group should be vertically formed. ,
In the brush planting hole of the brush group on the outer diameter side, at least the outermost brush planting hole is formed obliquely toward the rear of the rotation tangent in the rotation direction of the base, , The brush installation holes of the inner diameter side brush group are vertically formed, and at least the outermost brush installation holes of the outer diameter side brush group are formed obliquely outward. Along with the rotation direction of the pedestal, the tangential line should be formed diagonally toward the rear,
Is a matter that is appropriately selected. In addition, the brush fibers of the brush group should have the same characteristics, and the diameter of the brush fiber of the outer diameter side brush group should be larger than the diameter of the brush fiber of the inner diameter side brush group. The hard brush fiber of the brush group is used, and the soft brush fiber of the inner diameter brush group is used. The 6/12 nylon fiber is used and the outer brush group of the brush group is used. The diameter of the fibers is within the range of 0.80 to 1.10 mm, and the diameter of the brush fibers of the brush group on the inner diameter side is within the range of 0.40 to 0.70 mm.

According to the first and second aspects of the present invention, the synthetic resin fiber body of the outer diameter side brush group is made longer than the synthetic resin fiber body of the inner diameter side brush group by about 3 mm. The density of the group should be about 60 or more than 60 per square cm. Brush fiber is made of 6/12 nylon fiber body with silicon carbide or aluminum oxide abrasive grain 30 It is a design matter that is appropriately added that the mixture is adhered and mixed at a mixing rate of not less than%.

(Operation) By the drive of the polisher equipped with the main cleaning brush, the brush group of the main cleaning brush is added with the weight of the base and the weight of the polisher to be pressed against the floor surface, and the brush fiber is polished by the rotation thereof. With the action, dirt on the floor surface is removed, and the floor surface is washed together with addition of water and a cleaning agent. In the brush group on the inner diameter side, the individual brush fibers have appropriate flexibility and satisfactorily follow irregularities on the floor surface. That is, since each brush fiber has abrasiveness and appropriate flexibility, it can follow fine irregularities on the floor surface well, and is not excessively peeled off to the wax layer, and stains on the surface layer of the floor surface Can be reliably removed. Since the brush group on the outer diameter side has higher rigidity than the one on the inner diameter side, it does not cause waist bending and always extends linearly in a diagonally downward direction.The lower end of the outermost brush fiber is projected horizontally from the outer surface of the base. It will be located outward in the plane. As a result, the brush group on the outer diameter side reaches the wall body in the cleaning area, and surely exerts the polishing / cleaning action at the corner without forming a gap with the wall body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rotary cleaning brush device of the present invention will be described with reference to the drawings. 1 to 5 show an embodiment (first embodiment) thereof. That is, FIG.
2 and FIG. 2 show the entire structure, and FIGS. 3 to 5 show each partial structure.

As shown in FIGS. 1 and 2, B is a rotary floor cleaning brush (hereinafter, simply referred to as “cleaning brush”) of the present embodiment, which is a disk-shaped base 1 and the base 1. Brush group 5 including a brush bundle 4 that is planted in the brush planting hole 2.

The detailed structure of each part will be described below. The base 1 has a circular hole 1a formed in the center thereof, has a substantially circular ring shape having a predetermined thickness, and has a large number of brush planting holes 2 opening to the lower surface. It 1b is an outer surface. The base 1 is made of a hard synthetic resin material,
Although vinyl chloride resin is used in the present embodiment, the use of other equivalent synthetic resin materials, such as polypropylene resin and ABS resin, is not hindered. Also, it goes without saying that it may be made of wood.

Brush planting hole 2 The brush planting hole 2 is a circular hole, which is formed in the base 1 over a certain depth, and is also formed in a large number at regular intervals. In this embodiment, the brush planting holes 2 are provided in a zigzag pattern and in a circular center pattern in multiple rows. FIG. 3 shows a cross-sectional structure of the brush planting hole 2, 2a being a hole wall thereof, and 2b being a conical hole ceiling. The brush planting hole 2 is drilled with a drill having a conical tip, and therefore the hole ceiling 2b has a conical shape corresponding to the shape of the tip. This brush planting hole 2 has, for example, a diameter of 6 to 7 mm.
Approximately, the depth is about 10 mm, and the specifications of the hole ceiling 2b are 90 °, and the holes 2 are arranged in a staggered manner to keep an interval of about 10 mm. It is essential that the pitch of the brush planting holes 2 be as small as possible, and in combination with the number of brush fibers planted in one brush planting hole 2, high density is achieved. .

Brush Group 5 The brush group 5 is composed of an assembly of brush bundles 4 implanted in the brush planting holes 2. In this embodiment, the brush group 5
Consists of a brush group 5A on the inner diameter side and a brush group 5B on the outer diameter side. The brush group 5A on the inner diameter side is made of a thin synthetic resin fiber body, and the brush group 5B on the outer diameter side is made of a thick synthetic material. A resin fiber body is used, and the synthetic resin fiber body of the outer diameter side brush group 5A is made longer than the synthetic resin fiber body 5B of the inner diameter side brush group.

First, the inner diameter side / outer diameter side brush groups 5A and 5B
The configuration of the brush bundle 4 that is common to all will be described. As shown in FIG. 4, the brush bundle 4 has brush fibers 6 of a predetermined length.
Is bundled with 10 to 30 pieces and folded from the center,
In addition, a stopper 7 made of a wire is wound around the bent portion. More specifically, the brush fiber 6 is a fibrous body having a predetermined diameter, and is itself abrasive. Further, the brush fibers 6 have a repulsive property and retain a direct radiating state in a natural state, and receive a restraining force at the center to face in the same direction, but when the restraining force is released, they return to the direct irradiating state. As an example of the configuration, abrasive grains are attached to the surface of a synthetic resin wire material via an adhesive. As such a brush fiber 6,
For synthetic resin wire rods, nylon, especially 6.12
Nylon with a diameter of 0.40 to 1.20 mm is used.
The length is in mm. The physical property of 6/12 nylon is that it has a tensile strength of 1,120 to 1,260 kg / square c.
m, the tensile elastic modulus is 14,000 to 17,500 kg / square cm, the elongation is 25 to 35%, and the bending recovery force is 80 to 85%. Fine particles of silicon carbide (silicon carbide, specific gravity 3.25, Mohs hardness 9.5) or alumina (aluminum oxide, specific gravity 3.99, Mohs hardness 9.0) are used for the abrasive grains, and 30 to 40 is used as an adhesive. % Synthetic resin wire is coated with the mixed material.

The stopper 7 is made of a metal wire, usually a steel wire, and has a predetermined length and is wound around the center or base of the bundled brush fibers 6 and both ends thereof are extended outward. As one mode of the brush bundle 4, 20 brush fibers 6 are provided.
As a bundle, the stopper 7 has a length of 22 mm and a diameter of 0.5.
Use mm. Each of the brush bundles 4 is fixed by the fastener 7 biting into the base 1 at the base, and the portion (bristle length) protruding from the lower surface of the base 1 is 40 m.
It has a length of about m and has a certain elasticity (strength of the waist, lateral rigidity).
Exert. In the brush group 5 configured in this way, a large number of brush fibers 6 are planted in one brush planting hole 2 and are arranged at a small pitch. A compactness is realized.

The boring operation of the brush planting hole 2, that is, the boring process is performed by using a predetermined device, that is, a drilling machine, and using a drill attached to the device. The device is numerically controlled and automated, and the hole drilling work is accurately performed at predetermined intervals. In addition, work can be speeded up by using multiple axes. Since the material of the base 1 is softer than metal, it is easily perforated. Therefore, the tip angle can take an acute angle. The operation of implanting the brush bundle 4 into the brush planting hole 2 is performed as follows by reversing the base 1, that is, with the brush planting hole 2 facing upward. Brush fiber 6
10 to 30 pieces are bundled, and the stopper 7 is wound around the center of the bundle and folded so that both projecting ends of the stopper 7 are on the lower side, and while maintaining this state, a brush is planted through a predetermined tool. Push it into the hole 2. Due to the pushing force, both protruding ends of the stopper 7 are bent along the inclined surface of the hole ceiling 2b of the brush planting hole 2 and bite into the base 1.

(Brush Group 5A, 5B) In the present embodiment, the inner diameter side brush group 5A and the outer diameter side brush group 5B are concentrically arranged in a large number of rows (usually about 10 rows), and the outer side Two rows are the outer diameter side brush group 5B. The brush group 5A on the inner diameter side and the brush group 5B on the outer diameter side have different rigidity and length. That is, the brush group 5A on the inner diameter side uses a fine brush fiber, the brush group 5B on the outer diameter side uses a brush fiber having a larger diameter than that of the brush group 5A on the inner diameter side, and It is slightly lengthened (about 2 to 3 mm). Further, in the outer diameter side brush group 5A, the lower end of the outermost brush fiber is located outward from the outer surface 1b of the base 1 by β (about 5 mm) on the horizontal projection plane. As a result, the rigidity and length of the brush group 5A on the outer diameter side is greater than and slightly longer than the rigidity of the brush group 5A on the inner diameter side, and further outward in the horizontal projection plane from the outer surface 1b of the base 1. Will be projected.

In the example shown in FIG. 3, the brush group 5 on the inner diameter side is used.
The brush planting holes 2 of A and the brush group 5B on the outer diameter side are both bored vertically, but in the embodiment shown in FIG. 5, the brush planting holes of the brush group 5B on the outer diameter side are planted. The hole 2 is formed so as to be inclined outward. That is, the hole axis of the outermost brush planting hole 2 is inclined by a ° (about 10 °), and the hole axis of the second row brush planting hole 2 is b °.
Inclination (about 5 °) (a ≧ b). b may also be vertical. Thus, according to this aspect, the brush group 5B on the outer diameter side has a short length and projects outward from the outer surface 1b of the base 1 with a distance β on the horizontal projection plane. Furthermore, the distance between the brush planting hole 2 and the side surface of the base 1 is larger than that in the example shown in FIG. 3 with a margin, and the boring work of the brush planting hole 2 is facilitated.

As yet another aspect, the brush group 5 on the outer diameter side
In B, at least the hole axis of the outermost brush planting hole 2 may be inclined by c ° (about 10 °) in the rotational tangential direction of the base 1. Further, in the brush planting holes 2 in the second row, the hole axis can be inclined by c ° or d ° (about 5 °) (c ≧ d). The brush planting hole 2 of the brush group 5A on the inner diameter side is usually a vertical hole. The embodiment is shown in FIG.
Of FIG. 5 or the embodiment of FIG. Then,
According to this aspect, as the brush device B rotates, the brush tips of the brush group 5B on the outer diameter side fit well to the floor surface.

As to the concrete examples of the brush groups 5A and 5B,
For the brush group 5A on the inner diameter side, one having a diameter of 0.55 mm is used among the brush fibers 6 described above, and the height thereof is 40.0 m.
m. The brush group 5B on the outer diameter side has a diameter of 1.00 mm and its height is 42.0 mm.

(Usage of Main Cleaning Brush B) The main cleaning brush B is mounted on a polisher as a driving device and driven at a predetermined rotation speed (200 rpm) to clean the floor surface. That is, the worker drives the polisher, grasps the arm of the polisher, and moves on the floor surface to perform the cleaning work.

(Static Characteristic of Example Body) (Example) A 15-inch body is used for the base 1, and a brush arrangement of 10 rows (inner and outer two rows is the outer diameter side brush group 5B) is used. Brush fiber is nylon 612 made by DuPont
Zytel 158L (registered trademark of DuPont) is used, the inner diameter side brush group 5A has a brush fiber diameter of 0.55 mm, the height is 40.0 mm, and the outer diameter side brush group 5B has a brush fiber diameter of 1.
00mm, height is 42.0mm, all of them are embedded vertically. The protrusion distance (β) of the outermost brush of the outer diameter side brush group 5B from the base 1 is 2 mm. Moreover, the density of the brush group 5 is an average unit square cm.
70 per hit. (Comparative example) As a comparative example, the same 15-inch body is used for the base 1, 10 rows of brush arrays are used, and Zeiter 158L is also used for the brush fiber, the brush fiber diameter is 0.55 mm, and the height is 30.0. mm, and all of them were embedded vertically. Further, the protrusion distance (β) of the outermost brush from the base 1 is 2 mm, and the density of the brush group 5 is 70 per square cm. (Static characteristic value) A polisher as a driving device was attached to the above-mentioned example body and comparative example body, and the weight thereof (30 kgm)
In addition, the protruding length (β ′) from the side surface of the base 1 was measured. The results are as follows: Example: β '= 3 mm Comparative example: β' = 8 mm
In the comparative example, the waist was broken, and it was bent outward greatly.

(Operation and Effect of Embodiment) Main Cleaning Brush B
Driven by a polisher equipped with
The brush group 5 is added with the weight of the base 1 and the weight of the polisher, is pressed against the floor surface, and its rotation removes dirt on the floor surface due to the polishing action of the brush fibers 6.
Further, the floor surface is cleaned together with addition of water and a cleaning agent. At this time, in the brush group 5 of the main cleaning brush B, the individual brush fibers 6 of the brush group 5A on the inner diameter side have appropriate flexibility due to their small diameter, and as a whole follow the uneven portion of the floor well. To do. Since the brush group 5B on the outer diameter side has a higher rigidity than that on the inner diameter side, it does not cause waist bending and always extends obliquely downward in a straight line, and the lower end of the outermost brush fiber 6 is lower than the outer surface of the base 1. , On the horizontal projection plane, it is located outward. As a result, the brush group 5B on the outer diameter side reaches the wall body in the cleaning area, and reliably exerts the polishing / cleaning action at the corner without forming a gap between the brush group 5B and the wall body.

The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included in the technical scope of the present invention. The abrasive grains used for the brush fibers may be those other than silicon carbide and aluminum oxide, and the equivalent ones may be used. The brush bundle 4 is not necessarily fixed to the brush planting hole 2 via the fastener 7, but may be fixed to the brush planting hole 2 via other means, for example, an adhesive. The bristle length of the brush fiber 6 is 40 mm in the present embodiment, but this is merely an example and is not limited to this.

[0024]

According to the rotary cleaning brush of the present invention, the brush group of the main cleaning brush is added to the weight of the base and the weight of the polisher by driving the polisher equipped with the main cleaning brush, and the brush group is pressed against the floor surface. And the rotation of the brush fibers effectively removes dirt on the floor surface by the polishing action of the brush fibers, and the floor surface is cleaned together with addition of water and a cleaning agent. In the brush group on the inner diameter side, the individual brush fibers have appropriate flexibility and satisfactorily follow irregularities on the floor surface. Since the brush group on the outer diameter side has higher rigidity than the one on the inner diameter side, it does not cause waist bending and always extends linearly in a diagonally downward direction.The lower end of the outermost brush fiber is projected horizontally from the outer surface of the base. It will be located outward in the plane. By this, the brush group on the outer diameter side reaches at the time of the wall body in the cleaning area,
You can surely polish and clean the corners without making a gap with the wall.

[Brief description of drawings]

FIG. 1 is a plan view showing the overall configuration of a rotary floor cleaning brush according to an embodiment of the present invention, in which the left half is a top view and the right half is a bottom view.

FIG. 2 is a partial side view and a partial sectional view of the rotary floor cleaning brush.

FIG. 3 is an enlarged cross-sectional view of a brush group.

FIG. 4 is a schematic diagram of a brush bundle.

FIG. 5 is a view showing another aspect of the brush planting hole.

[Explanation of symbols]

B ... Rotary floor cleaning brush, 1 ... Base, 2 ... Brush installation holes, 4 ... Brush bundle, 5 ... Brush group, 5A ... Inner diameter side brush group, 5B ... Outer diameter side brush group, 6 ... Brush fiber

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 1, 2001 (2001.11.
1)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

A second aspect of the invention is that a brush fiber having a highly abrasive abrasive grain adhered to the surface of a synthetic resin fiber body at a high density is mixed on a disk-shaped base that is rotationally driven to have a high density. In the floor surface cleaning brush, the brush groups are concentrically planted in a plurality of rows, and the floor surface is abraded / cleaned with the brush fibers.The brush group is formed on the lower surface of the base. The brush group on the inner diameter side is made of synthetic resin fibrous material with low rigidity, and the brush group on the outer diameter side is highly rigid. A synthetic resin fiber body is used, the synthetic resin fiber body of the outer diameter side brush group is made longer than the synthetic resin fiber body of the inner diameter side brush group, and the outer diameter side brush group is in the radial direction. The length accounts for 10 to 30%, and the outermost part is water. Made to protrude from the outer surface of the base in the projection plane, characterized in that. In the above configuration,
Specific aspects of the brush fiber and the brush group are shown in the following embodiments and examples, but other aspects are not excluded. Nylon (polyamide-based resin) is preferably selected as the synthetic resin fiber, and nylon 612 is particularly preferable, but nylons 6, 6, 8, 11,
The same 66, 610, etc. are not excluded. In addition,
“The brush group on the outer diameter side has a ratio of 1 to 1 in the radial length.
"Occupy 30%" means that the brush group is concentrically arranged in 10 rows (20
When arranging rows, occupy 1 to 3 rows (2 to 6 rows)
It is the intention to kill. Also, with the brush planting hole, the brush planting hole of the brush group on the inner diameter side is bored vertically,
At least the outermost brush planting holes of the brush group of the outer diameter side brush group should be formed obliquely outward, and the brush planting holes of the inner diameter side brush group should be vertically formed. ,
In the brush planting hole of the brush group on the outer diameter side, at least the outermost brush planting hole is formed obliquely toward the rear of the rotation tangent in the rotation direction of the base, , The brush installation holes of the inner diameter side brush group are vertically formed, and at least the outermost brush installation holes of the outer diameter side brush group are formed obliquely outward. Along with the rotation direction of the pedestal, the tangential line should be formed diagonally toward the rear,
Is a matter that is appropriately selected. Also, brushes in the brush group
As the fibers, brush fibers having the same characteristics are used, and the diameter of the brush fibers of the outer diameter side brush group is made larger than the diameter of the brush fibers of the inner diameter side brush group. Is a hard one, and the soft brush fiber of the inner diameter side brush group is used. 6.12 nylon fiber is used, and the brush fiber diameter of the outer diameter side brush group is 0.80 ~ It is a matter to be appropriately selected that the diameter is within the range of 1.10 mm and the diameter of the brush fiber of the brush group on the inner diameter side is within the range of 0.40 to 0.70 mm.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rotary cleaning brush device of the present invention will be described with reference to the drawings. 1 to 5 show one embodiment thereof. That is, FIGS. 1 and 2 show the overall configuration, and FIGS. 3 to 5 show each partial configuration.

Claims (7)

[Claims] 1. A highly dense brush group is provided with a brush fiber in which a highly abrasive abrasive grain is adhered to a surface of a synthetic resin fiber body at a high density on a disk-shaped base which is rotationally driven. In a floor cleaning brush in which a large number of concentric brush groups are planted and the floor surface is abraded and cleaned with the brush fibers, the brush group on the inner diameter side is made of a synthetic resin fiber body with low rigidity. The diameter side brush group is made of a synthetic resin fiber body having high rigidity, the synthetic resin fiber body of the outer diameter side brush group is made longer than the synthetic resin fiber body of the inner diameter side brush group, and The rotary side floor cleaning is characterized in that the brush group on the radial side occupies 10 to 30% in the ratio of the length in the radial direction, and the outermost side thereof projects from the outer surface of the base in the horizontal projection plane. brush. 2. A highly dense brush group is provided with brush fibers in which highly abrasive abrasive grains are densely adhered and mixed onto the surface of a synthetic resin fiber body on a disk-shaped base that is rotationally driven. A floor surface cleaning brush in which a plurality of brush groups are concentrically planted in a row and the brush fiber is used to grind and clean the floor surface, wherein the brush group includes a plurality of brushes formed on a lower surface of the base. The brush group on the inner diameter side is made of synthetic resin fiber material with low rigidity, and the brush group on the outer diameter side is made of synthetic resin fiber material with high rigidity. Used, the synthetic resin fiber body of the outer diameter side brush group is made longer than the synthetic resin fiber body of the inner diameter side brush group, and the outer diameter side brush group in the radial length ratio. Occupies 10 to 30%, and the outermost part is on the horizontal projection plane. Made to protrude from the base of the outer surface, a rotary floor cleaning brush, characterized in that. 3. A brush planting hole of the brush group on the inner diameter side is vertically formed, and at least at the outermost brush planting hole of the brush planting hole of the brush group on the outer diameter side is slanted outward. The rotary floor cleaning brush according to claim 2, which is provided. 4. The brush planting hole of the brush group on the inner diameter side is formed vertically, and at least the outermost brush planting hole in the brush planting hole of the brush group on the outer diameter side is in the rotational direction of the base. The rotary floor cleaning brush according to claim 2, wherein the rotary floor cleaning brush is formed obliquely toward the rear of the rotation tangent. 5. The brush fibers of the brush group have the same characteristics, and the diameter of the brush fibers of the outer diameter side brush group is larger than that of the inner diameter side brush group. Item 5. A rotary floor cleaning brush according to any one of items 1 to 4. 6. The brush fiber of the brush group is made of hard brush fiber of the outer diameter side brush group, and the soft brush fiber of the inner diameter side brush group is used. 5. The rotary floor cleaning brush according to any one of 1 to 4. 7. The brush fiber of the brush group is made of 6/12 nylon fiber, the diameter of the brush fiber of the brush group on the outer diameter side is within the range of 0.80 to 1.10 mm, and the brush fiber of the brush group on the inner diameter side is The rotary floor cleaning brush according to any one of claims 1 to 5, wherein a diameter of the fibers is within a range of 0.40 to 0.70 mm.