Floor brush structure

Abstract

To improve efficiency of a floor brush by highly accurate matching between a structure of soft bristles, hard bristles and comb teeth, and mounting parameters.SOLUTION: A floor brush structure comprises: a rotary brush including a roller rotatably installed in a housing, a plurality of hard bristles installed on an outer surface of the roller, and a plurality of soft bristles installed on the outer surface of the roller, where a height of the hard bristles is lower than a height of the soft bristles, and a height difference between the hard bristles and the soft bristles ranges from 0.2 mm to 5 mm; and comb teeth installed in the housing, installed corresponding to the rotary brush, and when the rotary brush is rotated, combing hair entangled with the rotary brush by inserting tips of the comb teeth into the hard bristles and / or the soft bristles at a depth in a range from 0.1 mm to 5 mm. When cleaning the hair on a floor by attaching the hard bristles and soft bristles to the roller, the floor brush structure reduces direct contact of the hair with the hard bristles and combs the hair entangled with the rotary brush by cooperation with the comb teeth.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a floor brush structure. [Background technology]

[0002] When using a conventional hard-hair rotating brush, a large amount of hair gets entangled in the rotating brush, and the texture of the hard fiber hair is also hard, so once the hair gets entangled in the rotating brush, cleaning is difficult. On the other hand, the conventional soft-hair rotating brush has a less noticeable problem of hair entanglement than the hard-hair rotating brush, but when cleaning a carpet, the soft hair cannot be inserted into the carpet hair, so the cleaning effect on the carpet is not ideal compared to the hard hair. Therefore, the conventional floor brush cannot eliminate hair entanglement and ensure the cleaning effect at the same time, and the efficiency of the floor brush cannot be realized.

[0003] It should be noted that the above description of the background art is provided to facilitate a clear and complete description of the technical solutions of the present invention, and to facilitate the understanding of those skilled in the art. It is not believed that the above technical solutions are well known to those skilled in the art just because these solutions are described in the background art of the present invention. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to eliminate the above-mentioned defects, the object of the present invention is to provide a floor brush structure that effectively solves the above-mentioned technical problems by achieving efficiency of the floor brush through highly accurate matching of the structure of the soft hair yarn, hard hair yarn and comb teeth with the mounting parameters. [Means for solving the problem]

[0005] In order to achieve the above objectives, the technical solutions used in the present invention are as follows: A floor brush structure, comprising: Housing and A roller, a hard yarn and a soft yarn, a rotating brush, the roller being rotatably installed within the housing, the hard yarn being installed on an outer surface of the roller in a plurality of strands, the soft yarn being installed on an outer surface of the roller in a plurality of strands, the hard yarn being lower in height than the soft yarn, and the difference in height between the hard yarn and the soft yarn being within a range of 0.2 mm to 5 mm; The comb includes a tooth that is installed within the housing and corresponds to the rotating brush, and when the rotating brush rotates, the tooth tip portion is inserted into the hard hair yarn and the soft hair yarn to comb hair entangled in the rotating brush, and the insertion depth of the tooth tip at the head portion into the hard hair yarn and the soft hair yarn ranges from 0.1 mm to 5 mm.

[0006] The beneficial effects of the present invention are as follows: by attaching the soft and hard yarns to the roller, when cleaning hair on the floor, the height of the soft yarn is higher than that of the hard yarn, so that the hair can be cleaned by the soft yarn, reducing the direct contact between the hair and the hard yarn, and at the same time, combing the hair entangled in the rotating brush by cooperation with the comb teeth, thereby solving the technical problem that the cleaning of the floor brush is difficult due to the entanglement of hair, and the hard yarn of the roller can be inserted into the carpet hair when cleaning the carpet, without affecting the function of the floor brush. At the same time, during the installation process, the parameters such as the height difference between the soft and hard yarns and the insertion depth of the comb teeth into the soft and hard yarns can be matched with the installation structure with high precision, so that the effect of the floor brush during operation can be optimized.

[0007] Specifically, the installation parameters are determined as follows.

[0008] 1) The height difference between the hard and soft yarns is controlled to be in the range of 0.2mm to 5mm (including 0.2mm and 5mm). If the height of the hard and soft yarns is within this range, when used to clean a carpet, the hard yarn sinks into the carpet fibers, making it easy to remove dust from the gaps in the carpet and pick it up with a vacuum cleaner, without affecting the cleaning effect of the carpet by the rotating brush. When used to clean a floor, the soft yarn is higher than the hard yarn, so that the soft yarn comes into contact with the floor to clean the floor, and the hair on the floor comes into contact with the soft yarn first, thereby avoiding the hair coming into direct contact with the hard yarn and getting entangled in the rotating brush, making it difficult to remove. In addition, when cleaning the floor, the hard yarn also comes into direct contact with the floor, preventing the gloss of the floor from being damaged. If the height difference between the hard and soft hair yarns is less than 0.2mm, the hard and soft hair yarns are almost the same height, so when the bristle brush cleans the floor, the hard hair yarns come into direct contact with the hair, which is likely to cause the hair to get entangled in the rotating brush, and the hard hair yarns come into contact with the floor and damage it. If the height difference between the hard and soft hair yarns is more than 5mm, the height difference between the hard and soft hair yarns is too large, so that when the bristle brush cleans the carpet, the hard hair yarns cannot sink into the carpet hairs, which affects the cleaning effect on the carpet.

[0009] 2) When installing, it is necessary to ensure that the insertion depth of the tooth tips at the head of the comb teeth into the hard and soft hair yarns is within the range of 0.1mm to 5mm. This is because only when the insertion depth of the tooth tips into the hair yarns is controlled within this range, the tooth tips of the comb teeth not only do not affect the rotation of the rotary brush, but also can effectively achieve combing the hair entangled in the rotary brush; if the insertion depth is less than 0.1mm, the tooth tips of the comb teeth cannot effectively remove the hair entangled in the rotary brush; if the insertion depth is more than 5mm, the tip of the comb teeth is inserted too deeply, which affects the normal rotation of the rotary brush.

[0010] Furthermore, the tips of the comb teeth are arranged in a plurality of rows along the axial direction of the roller, the interval between two adjacent tips is in the range of 2 mm to 6 mm, and the angle of the tips at the heads of the comb teeth is in the range of 8° to 105°. Only when the angle of the tips at the heads of the comb teeth is within the range of 8° to 105°, the tips of the comb teeth can be inserted into the wool yarn to comb out entangled hair. If the angle of the tips of the comb teeth is less than 8°, the strength of the tips is too low and they are prone to breakage, and they are also difficult to mold during production. If the angle of the tips of the comb teeth is greater than 105°, the interval between the tips of the comb teeth is too large to effectively remove entangled hair.

[0011] Furthermore, a plurality of hard yarns are arranged on the surface of one substrate to form a hard hair strip, and a plurality of soft yarns are arranged on the surface of one substrate to form a soft hair strip, and there are a plurality of hard hair strips and soft hair strips, and a plurality of pairs of hard hair strips and soft hair strips are provided on the surface of the roller, each pair consisting of one hard hair strip and one soft hair strip. When attaching the hard hair yarns and soft hair yarns to the roller, first, all the hard hair yarns are knitted on one substrate to form a complete hard hair strip, then all the soft hair yarns are knitted on the substrate to form a complete soft hair strip, and then two combinations of hard hair strips and soft hair strips are placed on the roller.

[0012] Further, a plurality of first grooves are formed on the surface of the roller, and the first grooves are combination grooves each consisting of two grooves, one hard hair strip is attached in one groove, and one soft hair strip is attached in the other groove. When attaching the hard hair yarn and the soft hair yarn to the roller, first, all the hard hair yarns are woven into one substrate to form a complete hard hair strip, then all the soft hair yarns are woven into one substrate to form a complete soft hair strip, and then the hard hair strips and the soft hair strips are combined in pairs and attached to the roller. When combining the hard hair strips and the soft hair strips in pairs and attaching them to the roller, the roller may be formed with V-shaped, "in"-shaped, spiral, or other grooves, and the hard hair strips and the soft hair strips may be inserted into the grooves in a manner such as diagonal insertion or vertical insertion to complete the attachment, and at the same time, the hard hair strips and the soft hair strips may be directly attached to the roller with adhesive without using the grooves.

[0013] Furthermore, the interval between the two grooves of the combination groove is in the range of 1mm to 15mm. When two hard bristle strips and two soft bristle strips are used in combination, the interval between the two grooves must not exceed 15mm, otherwise the hard bristle strips and the soft bristle strips will not be able to cooperate when using the rotating brush, so the interval between the grooves for mounting the hard bristle strips and the soft bristle strips is set in the range of 1mm to 15mm.

[0014] Furthermore, a plurality of soft hair yarns are arranged on the surface of a single substrate together with a plurality of hard hair yarns to form a soft-hard hair strip, and a plurality of the soft-hard hair strips are placed on the surface of the roller. The soft hair yarns and hard hair yarns are combined on a single substrate to knit a complete soft-hard hair strip, and then the soft-hard hair strip is attached to a rotating brush.

[0015] Furthermore, a plurality of the hard hair yarns are arranged on the substrate to form a hard hair layer, and a plurality of the soft hair yarns are arranged on the surface of the substrate to form a soft hair layer, and the hard hair layer and the soft hair layer are arranged side by side. In the soft-hard hair strip, all the hard hair yarns are arranged to form the hard hair layer, all the soft hair layers are arranged to form the soft hair layer, and the soft hair layer and the hard hair layer are arranged side by side.

[0016] Furthermore, the range of the distance between the hard and soft hair layers is 0mm to 15mm. When the hard and soft hair layers are arranged side by side on the surface of the substrate as a bristle brush layer, there may or may not be a distance between the hard and soft hair layers, but both distances should not exceed 15mm, otherwise the hard and soft hair yarns of the bristle strip cannot cooperate when using the rotating brush.

[0017] Furthermore, a plurality of second grooves are formed on the surface of the roller, and one of the soft / hard bristle strips is attached to one of the second grooves. When attaching the soft / hard bristle strips to the roller, the roller may be formed with V-shaped, "in"-shaped, spiral, or other grooves, and the hard bristle strips and soft bristle strips may be inserted into the grooves in a diagonal or vertical manner, or the hard bristle strips and soft bristle strips may be directly attached to the roller with an adhesive without using a groove. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of the overall structure of the floor brush of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing the structure of comb teeth of the present invention. [Diagram 3] 1 is a schematic diagram of hard yarn and soft yarn of the present invention. [Figure 4] FIG. 2 is a schematic diagram showing the structure of soft and hard wool yarns in a roller according to Example 1 of the present invention. [Diagram 5] FIG. 1 is a schematic diagram showing the structure of soft and hard wool yarns in a roller according to Example 2 of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Example 1 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes in detail preferred embodiments of the present invention with reference to the drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and so as to more clearly define the protection scope of the present invention. Please refer to Figures 1 to 5. In the description of the present invention, it should be explained that the terms indicating the orientation or positional relationship, such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", and "outside", are based on the orientation or positional relationship shown in the drawings, or are the orientation or positional relationship that is often installed when using the product of the invention, and are only for the purpose of explaining and simplifying the present invention, and do not indicate or suggest that the device or element being referred to has a specific orientation, must be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or suggesting relative importance. The terms "horizontal", "vertical", "suspended", etc. do not mean the absolute horizontality or suspension of the parts, and may be slightly tilted. [Horizontal] simply means that it is more horizontal than "vertical", and does not necessarily mean that it is completely horizontal, and may be slightly tilted.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "mounting", "connecting to each other", and "connection" should be understood in a broad sense, for example, may be fixed connection, detachable connection, integral connection, mechanical connection, electrical connection, direct connection, indirect connection via an intermediate medium, or internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0021] This embodiment provides a floor brush structure, and as shown in Figures 1-2, the floor brush structure includes a housing 1 and further includes a rotating brush 2, the rotating brush 2 includes a roller 2.1, a hard hair yarn 2.2, and a soft hair yarn 2.3, the roller 2.1 is rotatably installed in the housing 1, the hard hair yarn 2.2 is arranged in a plurality of strands around the outer surface of the roller 2.1, the soft hair yarn 2.3 is arranged in a plurality of strands around the outer surface of the roller 2.1, the height of the hard hair yarn 2.2 is lower than the height of the soft hair yarn 2.3,

[0022] The floor brush structure further includes comb teeth 3, which are installed within the housing 1 and correspond to the rotating brush 2. When the rotating brush 2 rotates, the tips of the comb teeth 3 are inserted into the hard hair yarn 2.2 and the soft hair yarn 2.3 to comb out hair entangled in the rotating brush 2.

[0023] In the above embodiment, the height difference between the hard yarn 2.2 and the soft yarn 2.3 is in the range of 0.2 mm to 5 mm. The height difference between the hard yarn 2.2 and the soft yarn 2.3 needs to be controlled in the range of 0.2 mm to 5 mm (including 0.2 mm and 5 mm).

[0024] If the heights of the hard hair yarn 2.2 and the soft hair yarn 2.3 are within this range, when used to clean a carpet, the hard hair yarn 2.2 sinks into the carpet fibers, making it easy to remove dust from the gaps in the carpet and pick it up with a vacuum cleaner, without affecting the carpet cleaning effect of the rotating brush 2. When used to clean a floor, the height of the soft hair yarn 2.3 is higher than that of the hard hair yarn 2.2, so that the soft hair yarn 2.3 comes into contact with the floor to clean the floor, and hair on the floor first comes into contact with the soft hair yarn 2.3, preventing the hair from coming into direct contact with the hard hair yarn 2.2 and becoming entangled in the rotating brush 2 and being difficult to remove. In addition, when cleaning the floor, the hard hair yarn 2.2 also comes into direct contact with the floor, preventing the gloss of the floor from being damaged. If the height difference between the hard hair yarn 2.2 and the soft hair yarn 2.3 is less than 0.2 mm, the hard hair yarn 2.2 and the soft hair yarn 2.3 are almost the same height, so that when the hair brush cleans the floor, the hard hair yarn 2.2 comes into direct contact with the hair, which is likely to cause the hair to get entangled in the rotating brush 2, and the hard hair yarn 2.2 comes into contact with the floor and damages the floor. If the height difference between the hard hair yarn 2.2 and the soft hair yarn 2.3 is more than 5 mm, the height difference between the hard hair yarn 2.2 and the soft hair yarn 2.3 is too large, so that when the hair brush cleans the carpet, the hard hair yarn 2.2 cannot sink into the carpet hair, which affects the cleaning effect on the carpet.

[0025] The table below shows the statistical results of testing the difference in height between soft and hard wool yarns. [Table 1-1] [Table 1-2]

[0026] In the above embodiment, the tooth tips of the comb teeth 3 are arranged in a plurality of rows along the axial direction of the roller 2.1, and the interval between two adjacent tooth tips is in the range of 2 mm to 6 mm. When the tooth tips attached along the axial direction are inserted into the rotating brush 2, the range in which the comb teeth 3 comb the hair on the rotating brush 2 can cover the entire rotating brush 2, thereby effectively improving the effect of combing tangled hair.

[0027] In the above embodiment, when mounting, it is necessary to ensure that the insertion depth of the tips of the teeth at the head of the comb teeth into the hard and soft yarns is within the range of 0.1 mm to 5 mm.

[0028] This is because only when the insertion depth of the tooth tips into the hair yarn is controlled within this range can the tooth tips of the comb teeth effectively achieve combing of hair entangled in the rotating brush without affecting the rotation of the rotating brush; if the insertion depth is less than 0.1 mm, the tooth tips of the comb teeth cannot effectively remove hair entangled in the rotating brush; if the insertion depth is more than 5 mm, the tooth tips of the comb teeth are inserted too deeply, which affects the normal rotation of the rotating brush.

[0029] In the above embodiment, the angle range of the tips of the comb teeth at the heads is 8° to 105°.

[0030] When the angle of the tips of the comb teeth at the heads is within the range of 8° to 105°, tangled hair can only be combed out when the tips of the comb teeth are inserted into the wool; if the angle of the tips of the comb teeth is less than 8°, the strength of the tips is too low and they are prone to breakage and are also difficult to shape during production; if the angle of the tips of the comb teeth is greater than 105°, the spacing between the tips of the comb teeth is too large and tangled hair cannot be effectively removed.

[0031] In the above embodiment, as shown in FIG. 3, a plurality of hard hair yarns 2.2 are arranged on the surface of a single substrate to form a hard hair strip 100, and a plurality of soft hair yarns 2.3 are arranged on the surface of a single substrate to form a soft hair strip 200, and there are a plurality of both the hard hair strips 100 and the soft hair strips 200, and a plurality of pairs of hard hair strips 100 and soft hair strips 200 are provided on the surface of the roller 2.1, with one hard hair strip 100 and one soft hair strip 200 constituting one pair.

[0032] The specific arrangement form may be a continuous spiral shape, or an intermittent spiral shape (for example, arranged in a spiral shape over the entire surface of the body of the rotating brush, but divided into multiple parts, which are either spaced apart in advance or joined together in sequence), or two spiral shapes may be symmetrically installed on the surface of the body of the rotating brush, connected to each other at the axial center position of the body of the rotating brush, or configured to be spaced apart by a predetermined distance.

[0033] When attaching the hard hair yarns 2.2 and the soft hair yarns 2.3 to the roller 2.1, first, all the hard hair yarns 2.2 are woven into one substrate to form a complete hard hair strip 100, then all the soft hair yarns 2.3 are woven into one substrate to form a complete soft hair strip 200, and then two combinations of the hard hair strips 100 and the soft hair strips 200 are placed on the roller 2.1.

[0034] In the above embodiment, the surface of the roller 2.1 is provided with a number of first grooves 300, which are combination grooves consisting of two grooves in one set, one hard hair strip 100 mounted in one groove and one soft hair strip 200 mounted in the other groove.

[0035] When combining two hard hair strips 100 and two soft hair strips 200 and attaching them to the roller 2.1, the roller 2.1 may be provided with a V-shaped, "in"-shaped or spiral groove, and the hard hair yarn and the soft hair strip 200 may be inserted into the grooves in a diagonal or vertical manner, or the hard hair strips and the soft hair strips 200 may be directly attached to the roller 2.1 with adhesive without using a groove.

[0036] In the above embodiment, the interval between the two grooves of the combination groove ranges from 1 mm to 15 mm.

[0037] When using a combination of two hard bristle strips 100 and two soft bristle strips 200, the distance between the two grooves must not exceed 15 mm. If the distance exceeds 15 mm, the hard bristle strips 100 and the soft bristle strips 200 will not be able to work together when using the rotating brush 2. For this reason, the distance between the grooves for attaching the hard bristle strips 100 and the soft bristle strips 200 is set to a range of 1 mm to 15 mm.

[0038] Example 2 This embodiment provides a floor brush structure, and the differences from the first embodiment are as follows.

[0039] As shown in FIG. 4, a plurality of soft yarns 2.3 are arranged on the surface of a single substrate together with a plurality of hard yarns 2.2 to form a soft-hard hair strip 400, and a plurality of the soft-hard hair strips 400 are installed on the surface of the roller 2.1.

[0040] The soft hair yarn 2.3 and the hard hair yarn 2.2 are combined on one substrate to knit a complete soft-hard hair strip 400, which is then attached to the rotating brush 2.

[0041] In the above-mentioned Example 2, in the soft / hard hair strip 400, a plurality of the hard hair yarns 2.2 are arranged on a substrate to form a hard hair layer 500, and a plurality of the soft hair yarns 2.3 are arranged on the surface of the substrate to form a soft hair layer 600, and the hard hair layer 500 and the soft hair layer 600 are installed side by side.

[0042] In the soft-hard hair strip 400, all the hard hair yarns 2.2 are arranged to form the hard hair layer 500, all the soft hair layers 600 are arranged to form the soft hair layer 600, and the soft hair layers 600 and the hard hair layers 500 are arranged side by side.

[0043] In the above-mentioned Example 2, the range of the distance between the hard hair layer 500 and the soft hair layer 600 is 0 mm to 15 mm.

[0044] When the hard hair layer 500 and the soft hair layer 600 are placed side by side on the surface of the substrate as a bristle brush layer, there may or may not be a gap between the hard hair layer 500 and the soft hair layer 600, but the gap between the two must not exceed 15 mm; if it exceeds 15 mm, the hard hair yarns 2.2 and the soft hair yarns 2.3 of the bristle row will not be able to cooperate when the rotating brush 2 is used.

[0045] In the above-mentioned second embodiment, a plurality of second grooves 700 are formed on the surface of the roller 2.1, and one of the soft / hard bristle strips 400 is attached in one of the second grooves 700.

[0046] When attaching the soft / hard bristle strip 400 to the roller 2.1, a V-shaped, "in"-shaped, spiral or other groove may be opened in the roller 2.1, and the soft / hard bristle strip 400 may be inserted into the groove by a diagonal or vertical insertion method, or the soft / hard bristle strip 400 may be directly attached to the roller 2.1 with an adhesive without using a groove.

[0047] The above embodiments are only intended to illustrate the technical concepts and features of the present invention, and the purpose is for those skilled in the art to understand and implement the content of the present invention, which cannot limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the spirit of the present invention shall be included within the protection scope of the present invention. [Explanation of symbols]

[0048] 1. Housing 2 Rotating Brush 3 Comb Teeth 2.1 Lola 2.2 Hard wool yarn 2.3 Soft wool yarn 100 Hard Hair Strips 200 Vellus Strips 300 1st groove 400 Soft and hard hair strips 500 Terminal hair layer 600 Vellus 700 2nd groove

Claims

1. A floor brush structure, comprising: Housing and A roller, a hard yarn and a soft yarn, a rotating brush, the roller being rotatably installed within the housing, the hard yarn being installed on an outer surface of the roller in a plurality of strands, the soft yarn being installed on an outer surface of the roller in a plurality of strands, the hard yarn being lower in height than the soft yarn, and the difference in height between the hard yarn and the soft yarn being within a range of 0.2 mm to 5 mm; A floor brush structure comprising: comb teeth that are installed within the housing and corresponding to the rotating brush, and when the rotating brush rotates, the tooth tips of the comb teeth are inserted into the hard hair yarn and the soft hair yarn to comb out hair entangled in the rotating brush, and the insertion depth of the tooth tips at the head of the comb teeth into the hard hair yarn and the soft hair yarn ranges from 0.1 mm to 5 mm.

2. The floor brush structure described in claim 1, characterized in that the tips of the comb teeth are arranged in a plurality of rows along the axial direction of the roller, the distance between two adjacent tips ranges from 2 mm to 6 mm, and the angle of the tips at the head of the comb teeth ranges from 8° to 105°.

3. The floor brush structure described in claim 1, characterized in that a plurality of hard hair yarns are arranged on the surface of a single substrate to form a hard hair strip, and a plurality of soft hair yarns are arranged on the surface of a single substrate to form a soft hair strip, and there are a plurality of both the hard hair strips and the soft hair strips, and a plurality of pairs of hard hair strips and soft hair strips are installed on the surface of the roller, with one hard hair strip and one soft hair strip as one pair.

4. The floor brush structure described in claim 3, characterized in that a plurality of first grooves are opened on the surface of the roller, the first grooves being combination grooves consisting of a set of two grooves, one of which has a hard bristle strip attached thereto and the other of which has a soft bristle strip attached thereto.

5. The floor brush structure according to claim 4, wherein the spacing between the two grooves of the combination groove ranges from 1 mm to 15 mm.

6. The floor brush structure described in claim 1, characterized in that a plurality of soft hair yarns are arranged on the surface of a single substrate together with a plurality of hard hair yarns to form a soft-hard hair strip, and the soft-hard hair strip is installed in multiple numbers on the surface of the roller.

7. The floor brush structure described in claim 6, characterized in that a plurality of the hard hair yarns are arranged on a substrate to form a hard hair layer, and a plurality of the soft hair yarns are arranged on the surface of the substrate to form a soft hair layer, and the hard hair layer and the soft hair layer are installed side by side.

8. 8. The floor brush structure according to claim 7, wherein the distance between the hard hair layer and the soft hair layer is in the range of 0 mm to 15 mm.

9. 8. The floor brush structure according to claim 7, wherein a plurality of second grooves are formed on the surface of the roller, and one of the soft and hard bristle strips is attached in one of the second grooves.

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