Cleaning rotary brush

Abstract

To provide a cleaning rotary brush suitable for use in a ditch running device which moves in ditches at a construction site and eliminates construction waste accumulated in the ditch outside the ditch.SOLUTION: A cleaning rotary brush 10 according to this embodiment includes a rotating shaft body 15, multiple fiber bristle bundles 17, and multiple elastic plates 18. The fiber bristle bundles 17 and the elastic plates 18 are disposed in a dispersed manner in the circumferential direction of the rotating shaft body 15.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] Embodiments of the present invention relate to a rotary brush for cleaning.

Background Art

[0002] At construction sites such as apartment buildings, construction waste (garbage) tends to accumulate in the drainage grooves on balconies and corridors, and there has been a desire to clean the grooves thoroughly. However, as construction waste at construction sites, there are not only dust, but also relatively large and heavy objects such as concrete chunks, scrap materials such as wood, metal pieces, metal scraps, glass pieces, and glass scraps. In addition, there are cases where pipes used as scaffolds are arranged across the grooves above the grooves. Therefore, even when cleaning the inside of the groove using a conventional sweeper (for example, Patent Document 1) that sweeps and collects dust on the floor surface such as a road with a brush that rotates around an axis perpendicular or inclined to the floor surface, it may not be possible to remove all the construction waste in the groove.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a rotary brush for cleaning suitable for use in a groove traveling device that discharges construction waste accumulated in a groove to the outside of the groove while traveling inside the groove at a construction site.

Means for Solving the Problems

[0005] The rotary brush for cleaning according to the present embodiment includes a rotary shaft body, a plurality of fiber tufts, and a plurality of elastic plates. The fiber tufts are dispersedly arranged in the circumferential direction of the rotary shaft body.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0007] Hereinafter, the rotary brush for cleaning according to the present embodiment will be described with reference to the drawings. In the following description, components having substantially the same functions and configurations are denoted by the same reference numerals, and duplicate explanations will be made only when necessary.

[0008] Figs. 1 and 2 are diagrams showing the usage state of the rotary brush 10 for cleaning (hereinafter simply referred to as the rotary brush 10) according to the present embodiment. Fig. 1 represents a perspective view, and Fig. 2 represents a front view. As shown in Fig. 1, in the present embodiment, the rotary brush 10 will be described as being used as a component of the groove traveling device 1. However, the usage examples of the rotary brush 10 are not limited to this. For example, the rotary brush 10 can be used for a handheld cleaning device that does not have the traveling mechanism 30 and the splash prevention plate 40 of the groove traveling device 1. The groove traveling device 1 is a device that discharges construction waste accumulated in a groove to the outside of the groove while traveling in a balcony of an apartment building that is a construction site or in a drainage groove provided in a corridor. Here, the construction waste includes sand dust and rubble. The sand dust is not limited to sand and dust, and represents relatively small and relatively light construction waste that can be swept out, such as dust, fine wood chips generated by wood processing, fine metal chips generated by metal processing, and fine glass chips generated by glass processing. The rubble represents relatively large and relatively heavy construction waste that is difficult to sweep out, such as concrete blocks, end materials such as wood, metal pieces, and glass pieces.

[0009] Fig. 3 is a diagram showing a state in which the rotary brush 10 is removed from the device main body 20 of the groove traveling device 1. Note that, with an arbitrary position of the groove traveling device 1 as the origin, an axis parallel to the length direction of the groove traveling device 1 is defined as the X-axis, an axis parallel to the width direction is defined as the Y-axis, and an axis parallel to the height direction is defined as the Z-axis. Also, the length direction is also referred to as the front-rear direction, the width direction is also referred to as the left-right direction, and the height direction is also referred to as the up-down direction. The center line of the device main body 20 is parallel to the X-axis direction.

[0010] As shown in FIG. 3, the rotary brush 10, together with the apparatus main body 20, the traveling mechanism 30, and the splash prevention plate 40, constitutes the groove traveling device 1. Traveling mechanisms 30 suitable for traveling on gravel or unleveled ground are provided on both the left and right sides of the apparatus main body 20. The traveling mechanism 30 is configured by stretching a crawler (track) between a pair of drive wheels that are dispersedly arranged in the front and rear for self-propulsion. Due to the traveling mechanism 30, the groove traveling device 1 can travel forward. A splash prevention plate 40 is provided above the apparatus main body 20 at a position covering the rotary brush 10 attached to the apparatus main body 20. The splash prevention plate 40 suppresses the dust and debris swept up by the rotary brush 10 and the gravel scraped up by the rotary brush 10 from scattering to one side with respect to the traveling direction of the groove traveling device 1.

[0011] The rotary brush 10 is provided such that its rotation axis is parallel to the X-axis (the center line of the apparatus main body 20) and protrudes forward in the traveling direction of the apparatus main body 20. Specifically, the rotary brush 10 is composed of a rotary shaft 11 and a brush body 12. The rotary shaft 11 is detachable from the apparatus main body 20. Also, the brush body 12 is detachable from the rotary shaft 11. The rotary shaft 11 is attached to the front end face of the apparatus main body 20 in a direction parallel to the X-axis direction so as to protrude forward. The rear end of the rotary shaft 11 is connected to a motor (not shown) built into the apparatus main body 20. When the motor (not shown) built into the apparatus main body 20 rotates, the brush body 12 is rotated around the X-axis together with the rotary shaft 11.

[0012] Note that the rotary brush 10 may be one in which the rotary shaft 11 and the brush body 12 are integrated. Also, if the rotary shaft 11 can be a general-purpose product, only the brush body 12 may be referred to as the rotary brush 10.

[0013] Hereinafter, the brush body 12 will be described with reference to FIGS. 4 to 6. FIGS. 4, 5, and 6 respectively show a perspective view, a plan view, and a front view (front view) of the brush body 12.

[0014] As shown in FIG. 4, the rotating brush 10 has a rotating shaft body 15, a plurality of fiber tufts 17, and a plurality of elastic plates 18. Typically, the rotating shaft body 15 forms a cylinder, and an insertion hole penetrating the cylinder back and forth is formed at the central position thereof. The rotating shaft 11 is inserted into this insertion hole and fixed to the rotating shaft body 15 by fastening with a fastener. A plurality of synthetic resin fiber tufts 17 having flexibility for sweeping dust in the groove to the outside of the groove are radially flocked on the rotating shaft body 15. Further, a plurality of elastic plates 18 made of elastic resin for scraping debris in the groove to the outside of the groove are radially attached along the center line of the rotating shaft body 15 to the rotating shaft body 15. That is, the fiber tufts 17 and the elastic plates 18 are dispersedly arranged in the circumferential direction of the rotating shaft body 15. Typically, the elastic plate 18 is arranged on the same circumferential surface as the circumferential surface of the rotating shaft body 15 on which the fiber tufts 17 are flocked.

[0015] Specifically, as shown in FIGS. 4 and 5, six fiber tufts 17 are arranged in parallel along the center line of the rotating shaft body 15 to form one fiber tuft row 16. The fiber tuft row 16 may have five or less, or seven or more fiber tufts 17. As shown in FIG. 6, the brush body 12 has two elastic plates 18 and six fiber tuft rows 16. The two elastic plates 18 are arranged at positions shifted by 180 degrees in the circumferential direction of the rotating shaft body 15. If the position of the circumferential surface of the rotating shaft body 15 to which one of the two elastic plates 18a is attached is set as 0 degrees, the other elastic plate 18b is arranged at the 180-degree position of the circumferential surface of the rotating shaft body 15. The three fiber tuft rows 16a, 16b, and 16c are evenly arranged at intervals of 30 degrees in a 60-degree range from the 60-degree position to the 120-degree position of the circumferential surface of the rotating shaft body 15. Similarly, the three fiber tuft rows 16d, 16e, and 16f are evenly arranged at intervals of 30 degrees in a 60-degree range from the 240-degree position to the 300-degree position of the circumferential surface of the rotating shaft body 15.

[0016] Hereinafter, with reference to FIG. 7, the length of the fiber tuft 17 and the length of the elastic plate 18 will be described. FIG. 7 is a diagram in which the brush body 12 rotated 90 degrees is superimposed on the front view of the brush body in FIG. 6. In FIG. 7, the solid line represents the brush body 12 before being rotated 90 degrees, and the dotted line represents the brush body 12 after being rotated 90 degrees, respectively. The length of the fiber tuft 17 is defined as the distance from the surface of the rotating shaft body 15 on which the fiber tuft 17 is implanted to the tip of the fiber tuft 17. Similarly, the length of the elastic plate 18 is defined as the distance from the surface of the rotating shaft body 15 to which the elastic plate 18 is attached to the tip of the elastic plate 18. As shown in FIG. 7, the length Lh of the fiber tuft 17 is longer than the length Lb of the elastic plate 18, preferably 1.2 times or more and 2 times or less, preferably 1.5 times the length of the elastic plate 18.

[0017] Hereinafter, with reference to FIG. 8, the effects of the rotary brush 10 according to the present embodiment will be described. FIG. 8 is a supplementary view for explaining the operation of discharging the construction waste in the groove to the outside of the groove by the rotary brush 10. FIGS. 8(a), 8(b), and 8(c) show the states in which the rotary brush 10 is arranged at the first position, the second position, and the third position, respectively, and show how the rotary brush 10 rotates little by little. In FIG. 8, for the sake of clarity of the drawing, the rotary brush 10 is shown together with the splash prevention plate 40, and the illustration of the apparatus main body 20 of the groove traveling apparatus 1 and the like is omitted.

[0018] In this embodiment, the rotary brush 10 has fiber tufts 17 and an elastic plate 18. The fiber tufts 17 press their tips or near the middle against the bottom surface or the side surface of the groove, and while sliding, sweep the dust 100 in the groove out of the groove. Of course, among the dust 100 discharged outside the groove by the fiber tufts 17, there are not only those discharged by the sweeping operation of the fiber tufts 17, but also the dust 100 that has flown out of the groove along the air flow from the inside to the outside of the groove created by the rotation of the fiber tufts 17, the dust 100 that has been entangled by the fiber tufts 17 and has flown out of the groove due to the centrifugal force generated in the fiber tufts 17 as the rotary brush 10 rotates, or the restoring force that the fiber tufts 17 try to return to the original state from the bent state, and as a result of the fiber tufts 17 being bounced up, the dust 100 and the like that have flown out of the groove are included. On the other hand, the elastic plate 18 scrapes the bottom surface and the side surface of the groove while scraping the rubble 200 in the groove out of the groove. Of course, among the rubble 200 discharged outside the groove by the elastic plate 18, there is also the rubble 200 that has been bounced off by the rotational force of the elastic plate 18 accompanying the rotation of the rotary brush 10.

[0019] In this way, the rotary brush 10 has the fiber tufts 17 that are good at sweeping out fine and light dust 100 and the specialized elastic plate 18 that is good at scraping out large and heavy rubble 200, so that compared with a rotary brush having only the fiber tufts 17 or only the elastic plate 18, the construction waste in the groove can be discharged outside the groove more efficiently.

[0020] In this embodiment, the elastic plate 18 is provided on the same circumferential surface as the circumferential surface of the rotary shaft body 15 on which the fiber tufts 17 are planted. Thereby, the following effects are achieved. That is, according to the above configuration, compared with the case where the fiber tufts 17 and the elastic plate 18 are separated back and forth along the center line of the rotary shaft body 15, the length of the rotary brush 10 and the rotary shaft body 15 can be simply shortened. This suppresses the overall length of the groove traveling device 1 on which the rotary brush 10 is mounted, and also avoids the center of gravity position of the groove traveling device 1 from being in the front, realizing stable traveling of the groove traveling device 1. Further, by shortening the rotary shaft body 15, the deflection due to the self-weight of the rotary shaft body 15 or the rotary shaft 11 inserted therein is suppressed, the shaking of the rotary brush 10 up, down, left, and right is suppressed, and stable rotation is realized.

[0021] In addition, since the fiber tuft 17 has flexibility and is longer than the elastic plate 18, it can reach every corner of the groove. The fiber tuft 17 that reaches every corner of the groove scrapes out the debris 200 accumulated at the corners of the groove little by little from the corners of the groove, not to mention the dust 100 accumulated at the corners of the groove. For example, the dust 100 scraped out from the corner of the groove by the fiber tuft 17 is directly swept out of the groove by the fiber tuft 17, and the debris 200 scraped out from the corner of the groove by the fiber tuft 17 is swept out of the groove by the elastic plate 18 that arrives after being scraped out.

[0022] For example, when the fiber tuft and the elastic plate are separated back and forth along the center line of the rotating shaft body, the period during which the operation of scraping out the debris 200 from the corner of the groove by the fiber tuft is executed and the period during which the operation of scraping out the debris 200 in the groove to the outside of the groove by the elastic plate are in sequence in time. Therefore, it takes time from when the debris 200 is scraped out from the corner of the groove by the fiber tuft until the elastic plate approaches the debris 200. During that time, if for some reason the debris 200 is moved back to the corner of the groove again, it will not be possible to scrape it out of the groove by the elastic plate. Also, between when the debris 200 is scraped out from the corner of the groove and when it is scraped out of the groove by the elastic plate, the debris 200 may become an obstacle and may prevent the fiber tuft from sweeping out the dust 100.

[0023] According to the configuration of the present embodiment, the debris 200 scraped out from the corner of the groove by the fiber tuft 17 can be quickly scraped out of the groove by the elastic plate 18 that arrives immediately after being scraped out from the corner of the groove. That is, the fiber tuft 17 and the elastic plate 18 can cooperate to scrape out the debris 200 accumulated at the corner of the groove to the outside of the groove. The cooperative work by the fiber tuft 17 and the elastic plate 18 is repeatedly executed not only every time the rotary brush 10 rotates once, but also during one rotation of the rotary brush 10 because the elastic plate 18 and the fiber tuft 17 are dispersedly provided in the same circumferential direction of the rotating shaft body 15. Thereby, the construction waste in the groove can be discharged outside the groove more efficiently than the rotary brush 10 in which the fiber tuft 17 and the elastic plate 18 are separated back and forth along the center line of the rotating shaft body 15.

[0024] In this embodiment, two elastic plates 18 are provided on the circumferential surface of the rotating shaft body 15, and six fiber tuft rows 16 are flocked. Around the rotating shaft body 15, if two fiber tuft rows 16 are too close to each other, the two fiber tuft rows 16 will be entangled with each other to form a large single fiber tuft 17. If this happens, the number of times the dust 100 is swept out while the rotating brush 10 makes one rotation will decrease, and the sweeping efficiency of the dust 100 by the fiber tuft 17 will decrease. On the other hand, if the two fiber tuft rows 16 are too far apart from each other, simply the number of fiber tuft rows 17 flocked on the rotating shaft body 15 will decrease, and the number of times the dust 100 is swept out while the rotating brush 10 makes one rotation will decrease, and the sweeping efficiency of the dust 100 by the fiber tuft 17 will decrease.

[0025] Also, around the rotating shaft body 15, if the fiber tuft 17 and the elastic plate 18 are too close to each other, there will be no gap for accommodating the debris 200 between the fiber tuft 17 and the elastic plate 18. Therefore, in the worst case, the elastic plate 18 cannot scrape the debris 200 in the groove out of the groove. On the other hand, if the fiber tuft 17 and the elastic plate 18 are too far apart from each other, simply the number of fiber tuft rows 16 that can be flocked on the rotating shaft body 15 and the number of elastic plates 18 provided on the rotating shaft body 15 will decrease. Therefore, the scraping efficiency of the debris 200 by the elastic plate 18 will decrease.

[0026] Also, around the rotating shaft body 15, if the elastic plates 18 are too close to each other, there will be no gap for accommodating the debris 200 between them. Therefore, in the worst case, the elastic plate 18 cannot scrape the debris 200 out. On the other hand, if the elastic plates 18 are too far apart from each other, simply the number of elastic plates 18 that can be provided on the rotating shaft body 15 will decrease. Therefore, the number of times the elastic plate 18 scrapes the debris 200 will decrease, and the efficiency of scraping the debris 200 will decrease.

[0027] Under the above design concept, the inventors conducted repeated experiments and found the following multiple conditions. That is, for the first condition, in order to provide a gap between the elastic plate 18 and the fiber tuft 17 capable of accommodating the rubble 200, the angle formed by the adjacent fiber tuft 17 and the elastic plate 18 in the circumferential direction of the rotating shaft body 15 should not be less than 30 degrees. The second condition is that in order to avoid the adjacent fiber tuft rows 16 in the circumferential direction of the rotating shaft body 15 from being entangled with each other, the angle formed by the fiber tuft rows 16 in the circumferential direction of the rotating shaft body 15 should not be less than 30 degrees. The third condition is that the angle formed by the adjacent fiber tuft 17 and the elastic plate 18 in the circumferential direction of the rotating shaft body 15 is equivalent to or greater than the angle formed by the fiber tuft rows 16 in the circumferential direction of the rotating shaft body 15. After satisfying these conditions, considering the number of times the rubble 200 is scraped out, the number of times the dust 100 is swept out, the size of the rubble 200, etc. during one rotation of the rotary brush 10, the rotary brush 10 as shown in FIG. 6 was designed. Therefore, according to the rotary brush 10 shown in FIG. 6, compared with a rotary brush in which there is no gap between the elastic plate 18 and the fiber tuft 17 capable of accommodating the rubble 200, or a rotary brush in which the adjacent fiber tuft rows 16 are entangled with each other, the discharge efficiency of construction waste by the rotary brush 10 can be improved.

[0028] In this embodiment, a plurality of fiber tufts 17 form a fiber tuft row 16 that is densely arranged along the center line of the rotary shaft body 15. When the rotary brush 10 makes one rotation, since the number of fiber tufts 17 for sweeping out dust 100 simply increases, compared with the case where the fiber tufts 17 are arranged individually along the center line of the rotary shaft body 15, more dust 100 can be swept out in one rotation operation. Also, because adjacent fiber tufts 17 are close to each other, compared with the case where the fiber tufts 17 exist individually, the spread of the fiber hairs at the bent portions on the side surface and the bottom surface of the groove can be suppressed. Thereby, the density of the fiber tufts 17 in contact with the bottom surface and the side surface of the groove increases, the dropping of the dust 100 from between the fiber hairs is suppressed, and the dust 100 can be discharged more efficiently. Further, when the fiber tufts 17 are arranged individually along the center line of the rotary shaft body 15, or when a plurality of fiber tufts 17 are arranged along a direction inclined with respect to the center line of the rotary shaft body 15, when contacting the side surface or the bottom surface of the groove, the fiber tufts 17 bend left and right or bend backward with respect to the rotation direction, and the bending direction is not uniquely determined. If the fiber tufts 17 bend in various directions, unexpected situations such as one fiber tuft 17 getting entangled with other fiber tufts 17 may occur, which may reduce the efficiency of sweeping out the dust 100 with the fiber tufts 17. On the other hand, by arranging a plurality of fiber tufts 17 along the center line of the rotary shaft body 15, when contacting the side surface or the bottom surface of the groove, the entire fiber tuft row 16 can bend backward with respect to the rotation direction, so that the above-mentioned unexpected situations can be avoided, and the reduction in the efficiency of sweeping out the dust 100 by the fiber tufts 17 can be suppressed.

[0029] The configuration of the rotating brush is not limited to FIG. 6. FIG. 9 shows a first modified example of the rotating brush. As shown in FIG. 9, the rotating brush 50 according to the first modified example has four elastic plates 58 and six fiber tuft rows 56. The four elastic plates 58 are arranged at positions offset by 90 degrees around the rotating shaft body 55. Assuming that the position of the circumferential surface to which one elastic plate 58a of the four elastic plates 58 is attached with respect to the rotating shaft body 55 is 0 degrees, the remaining three elastic plates 58b, 58c, and 58d are arranged at positions 90 degrees, 180 degrees, and 270 degrees of the circumferential surface of the rotating shaft body 55, respectively. Two fiber tuft rows 56a and 56b are respectively arranged at positions 30 degrees and 60 degrees between the two elastic plates 58a and 58b. Two fiber tuft rows 56c and 56d are respectively arranged at positions 120 degrees and 150 degrees between the two elastic plates 58b and 58c. Two fiber tuft rows 56e and 56f are respectively arranged at positions 210 degrees and 240 degrees between the two elastic plates 58c and 58d. Two fiber tuft rows 56g and 56h are respectively arranged at positions 300 degrees and 330 degrees between the two elastic plates 58d and 58a. According to the rotating brush 50 according to the first modified example shown in FIG. 9, while satisfying the first condition and the second condition, it is possible to ensure that the operation of scraping out the rubble 200 by the elastic plate is performed 4 times and the operation of sweeping out the dust 100 by the fiber tuft row 56 is performed 8 times during one rotation of the rotating brush. Also, the angle between the fiber tuft row 56 and the elastic plate 58 is 30 degrees, which is relatively narrow. Therefore, the rotating brush 50 according to the first modified example may be more suitably used for a site where there is less large rubble as construction waste and there is more heavy rubble and dust than the rotating brush 10 shown in FIG. 6. On the other hand, in the rotating brush 10 shown in FIG. 6, the angle between the fiber tuft row 16 and the elastic plate 18 is 60 degrees, which is relatively wide. Therefore, the rotating brush 10 shown in FIG. 6 can be more suitably used for a site where there is not much construction waste but the ratio of large rubble 200 in the construction waste is high, compared to the rotating brush 50 according to the first modified example shown in FIG. 9.

[0030] The configuration of the rotating brush is not limited to FIG. 6. FIG. 10 shows a second modification example of the rotating brush. As shown in FIG. 10, the rotating brush 60 according to the second modification example has three elastic plates 68 and six fiber tuft rows 66. The three elastic plates 68 are respectively arranged at positions shifted by 120 degrees around the rotating shaft body 65. Assuming that the position of the circumferential surface to which one elastic plate 68a of the three elastic plates 68 is attached with respect to the rotating shaft body 65 is 0 degrees, the remaining two elastic plates 68b and 68c are respectively arranged at positions of 120 degrees and 240 degrees on the circumferential surface of the rotating shaft body 65. Two fiber tuft rows 66a and 66b are respectively arranged at positions of 45 degrees and 75 degrees between the two elastic plates 68a and 68b. Two fiber tuft rows 66c and 66d are respectively arranged at positions of 165 degrees and 195 degrees between the two elastic plates 68b and 68c. Two fiber tuft rows 66e and 66f are respectively arranged at positions of 285 degrees and 315 degrees between the two elastic plates 68c and 68a. According to the rotating brush 60 according to the second modification example shown in FIG. 10, while satisfying the first condition and the second condition, it is possible to ensure that the operation of scraping out debris by the elastic plate 68 is performed three times and the operation of sweeping out dust by the fiber tuft row 66 is performed six times while the rotating brush makes one rotation. Further, the angle between the fiber tuft row 66 and the elastic plate 68 is 45 degrees, which is standard. Therefore, the rotating brush 60 according to the second modification example may be more suitably used for a site where large debris, heavy debris, small dust, and light dust are discarded in a well-balanced manner than the rotating brush 10 shown in FIG. 6 and the rotating brush 50 according to the first modification example shown in FIG. 9.

[0031] Note that the elastic plate 18 and the fiber tuft 17 may be dispersedly arranged along the center line of the rotating shaft body 15. For example, in the brush body 12, the elastic plate 18 and the fiber tuft 17 may be alternately arranged along the center line of the rotating shaft body 15, and the elastic plate 18 and the fiber tuft 17 may be alternately arranged along the circumferential direction of the rotating shaft body 15. On the circumferential surface of the brush body 12, the fiber tuft 17 and the elastic plate 18 may be arranged in a staggered pattern. The staggered pattern means that the fiber tuft 17 and the elastic plate 18 are arranged alternately.

[0032] Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, as well as in the invention described in the claims and the equivalent scope thereof.

Explanation of Reference Numerals

[0033] 1... Groove traveling device, 10... Rotating brush, 11... Rotating shaft, 12... Brush body, 15... Rotating shaft body, 16... Fiber tuft row, 17... Fiber tuft, 18... Elastic plate, 100... Dust, 200... Rubble.

Claims

1. A rotating shaft body, a plurality of fiber tufts, and a plurality of elastic plates, and the fiber tufts and the elastic plates are arranged dispersedly in the circumferential direction of the rotating shaft body, a rotating brush for cleaning.

2. The fiber tufts are longer than the elastic plates, the rotating brush for cleaning according to Claim 1.

3. At a plurality of positions in the circumferential direction of the rotating shaft body, a plurality of fiber tuft rows are respectively formed in which the plurality of fiber tufts are arranged along the center line of the rotating shaft body at predetermined intervals, the fiber tuft rows and the elastic plates are arranged dispersedly in the circumferential direction of the rotating shaft body, the rotating brush for cleaning according to Claim 1.

4. The angle formed by the adjacent fiber tuft rows and the elastic plates in the circumferential direction of the rotating shaft body is larger than the angle formed by the adjacent fiber tuft rows in the circumferential direction of the rotating shaft body, the rotating brush for cleaning according to Claim 3.

5. The plurality of elastic plates form a pair, one of the pair of elastic plates is arranged at the position of 0 degrees in the circumferential direction of the rotating shaft body, and the other is arranged at the position of 180 degrees in the circumferential direction, the rotating brush for cleaning according to Claim 1.

6. The plurality of fiber tufts are respectively arranged at the positions of 60 degrees, 90 degrees, 120 degrees, 240 degrees, 270 degrees, and 300 degrees in the circumferential direction of the rotating shaft body, the rotating brush for cleaning according to Claim 5.

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