A roller brush

Abstract

The utility model relates to the technical field of roller brushes, and more specifically, it relates to a roller brush, comprising a handle, a brush barrel, a bracket and a support shaft, the bracket being assembled with the handle, the support shaft being assembled with the bracket, and at least one end of the support shaft being clamped and assembled with the bracket, the brush barrel being rotatably assembled with the support shaft and being coaxially arranged, the outer ring wall of the brush barrel being provided with an adsorption layer, which can more effectively control the amount of dipping material, avoid dripping and waste of paint, thereby achieving adsorption of the paint and improving the uniformity of brushing, and reducing the longitudinal length of the roller brush through the design of a support shaft with at least one end being clamped, and the shortened length of the roller brush makes the operation more flexible, so that it can more easily reach and paint corners or edge areas, thereby improving the brushing efficiency, and improving the uniformity and overall aesthetics of the brushing, and adopting a double-sided support method for the brush barrel to reduce the concentration of stress points and extend the service life of the roller brush.

Description

Technical Field

[0001] The utility model relates to the technical field of roller brushes, in particular to a roller brush. Background Art

[0002] Roller brush is a tool for applying paint evenly on the surface of an object. It is mainly used in the coating industry, such as home decoration, building exterior wall coatings, furniture making, etc. It can improve coating efficiency, ensure coating quality, and reduce paint waste;

[0003] The roller brush is mainly composed of a cylindrical brush barrel, a support shaft, and a handle. The brush barrel is rotatably assembled on the handle through the support shaft. In the prior art, in order to ensure the stability of the brush barrel, baffles are provided on both sides of the brush barrel as supports, and the baffles are connected to the handle. The support shaft is assembled between the two baffles through two sets of plug-ins, so that the operator can better control the roller brush and improve the painting efficiency. However, the baffles and the plug-ins increase the length of both sides of the roller brush. When painting corners or edge areas, the baffles occupy part of the position, so that the brush barrel cannot fully contact these areas, resulting in uneven coating and affecting the painting. In order to improve the overall aesthetics of the roller brush, if a single-sided baffle is used to enable the brush barrel to be close to the corner or edge area, only one side of the brush barrel will be the force point, resulting in the force being concentrated on the connection between the single-sided baffle and the single-sided support shaft during the use of the roller brush, making the connection between the baffle and the support shaft easy to wear and loosen, reducing the service life of the roller brush, which not only increases the construction cost, but also affects the construction progress. In addition, when in use, the roller brush needs to be repeatedly dipped in material before brushing, and the amount of dipping is difficult to control. It is easy to dip too much material to cause paint dripping, resulting in paint waste, and when the paint drips on the operator's clothes, it increases the difficulty of cleaning. Utility Model Content

[0004] In order to solve the brush cylinder supporting structure problem of the roller brush in the prior art, the present application provides a roller brush.

[0005] The utility model provides a roller brush adopting the following technical solution:

[0006] A roller brush comprises a handle, a brush barrel, a bracket and a support shaft, wherein the bracket is assembled with the handle, both ends of the support shaft are assembled with the bracket, and at least one end of the support shaft is snap-fitted with the bracket, and the brush barrel is rotatably assembled with the support shaft and is coaxially arranged.

[0007] Preferably, it also includes an insert, one end of the support shaft is vertically snap-fitted and assembled with the bracket, the insert is passed through the bracket and the other end of the support shaft, and is used for assembling the support shaft and the bracket.

[0008] Preferably, the bracket is provided with a receiving cavity, the opening of the receiving cavity is arranged toward the brush cylinder, one longitudinal side wall of the receiving cavity has a protruding supporting portion, and the supporting portion is provided with a through hole for assembling the insert.

[0009] Preferably, it also includes a clamping part, wherein the upward end of the clamping part is connected to the support shaft, the downward end of the clamping part is provided with a first clamping part, and the other longitudinal side wall of the accommodating cavity is provided with a second clamping part for clamping and assembling with the first clamping part.

[0010] Preferably, the first clamping portion is arranged in an inverted U shape, and the second clamping portion is clamped in the first clamping portion.

[0011] Preferably, the outer side wall of the bracket is recessed inward to form the second clamping portion, and the bottom wall of the clamping component is recessed from bottom to top to form the first clamping portion. When the first clamping portion and the second clamping portion are assembled, the outer side wall of the clamping component is flush with the outer side wall of the bracket.

[0012] Preferably, a side wall of the clamping member close to the end surface of the brush cylinder is provided with an avoidance groove, the avoidance groove is located above the first clamping portion and is used to avoid the outer annular wall of the brush cylinder.

[0013] Preferably, the handle is provided with a storage cavity for storing paint and having a discharge port, the bracket is provided with a feed port connected to the accommodating cavity at one end away from the brush barrel, and the discharge port of the storage cavity is connected to the feed port.

[0014] Preferably, the bottom wall of the accommodating cavity has an annular raised barrier portion, the barrier portion is extended along the axis of the brush cylinder, and the feed port is located in the barrier portion.

[0015] Preferably, the bottom wall of the bracket has a raised boss portion, part of the boss portion is located in the barrier portion, and multiple groups of discharge ports are provided. When three groups of discharge ports are provided, one group of the discharge ports is located on the top wall of the boss portion, and the other two groups of the discharge ports are respectively located on the side walls of the boss portion and arranged toward the side walls of the barrier portion.

[0016] The beneficial effects of the utility model are:

[0017] The longitudinal length of the roller brush is reduced by designing a support shaft with at least one end being clamped. The shortened roller brush length makes the operation more flexible, making it easier to reach and paint corners or edge areas, improving the painting efficiency, the uniformity of painting and the overall aesthetics. The double-sided support of the brush barrel is adopted to reduce the concentration of stress points and extend the service life of the roller brush.

[0018] Through the U-shaped first clamping part of the clamping part, when the clamping part is assembled with the bracket, there are two supporting forces, which makes the connection between the support shaft and the bracket more stable, and improves the brushing effect and quality. Secondly, the design of the clamping part increases the distance between the axis of the support shaft and the inner bottom wall of the bracket, effectively reducing the risk of interference between the outer ring wall of the brush barrel and the inner bottom wall of the bracket when rotating. Moreover, the design of the inverted U-shaped first clamping part and the straight second clamping part makes the assembly process simple and quick, and improves the replacement efficiency of the brush barrel;

[0019] The handle is provided with a liquid storage cavity, and the paint is directly supplied to the brush barrel through the storage cavity of the handle, reducing the dripping and waste of paint during the dipping process. The operator does not need to dip the paint frequently and can perform the brushing operation continuously, which significantly improves the brushing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram in the embodiment of the present application;

[0021] Figure 2 It is the main view in the embodiment of the present application;

[0022] Figure 3 is a cross-sectional view in an embodiment of the present application;

[0023] Figure 4 is a sectional stereogram in an embodiment of the present application;

[0024] Figure 5 It is a disassembled stereogram in an embodiment of the present application;

[0025] Figure 6 is a three-dimensional diagram of a bracket in an embodiment of the present application;

[0026] Figure 7 is a top view of the bracket in the embodiment of the present application;

[0027] Figure 8 is a stereoscopic diagram of the assembly of the support shaft and the clamping member in the embodiment of the present application;

[0028] Fig. 9 It is the front view of the assembly of the support shaft and the clamping part in the embodiment of the present application.

[0029] Explanation of the reference numerals: 1. handle; 101. storage chamber; 1011. discharge port; 102. pressing portion; 2. brush cylinder; 3. bracket; 301. accommodating chamber; 302. supporting portion; 3021. through hole; 3022. raised ring; 303. second clamping portion; 304. feed port; 305. barrier portion; 3051. barrier space; 306. boss portion; 4. support shaft; 5. insert; 6. clamping portion; 601. first clamping portion; 602. avoidance groove. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that each technical feature and the overall technical solution of the present application can be understood intuitively and vividly, but it cannot be understood as a limitation on the scope of protection of the present application.

[0031] In the description of this application, if there is a description of orientation, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0032] In the description of this application, if the orientation is involved, the orientation or position relationship indicated by "horizontal", "longitudinal" and "vertical" is based on the attached Figure 4 In the orientation or position relationship shown, the X-axis represents the “horizontal direction”, the Y-axis represents the “longitudinal direction”, and the Z-axis represents the “vertical direction”.

[0033] In the description of this application, if "several" is involved, it means one or more, if "multiple" is involved, it means more than two, if "greater than", "less than", "exceed", they should be understood as not including the number, if "above", "below", "within" are involved, they should be understood as including the number. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In addition, unless otherwise defined, the technical terms and scientific terms used in this application are the same as those generally understood by those skilled in the art. The terms used in this application are only for describing specific embodiments, not for limiting this application. It should be understood that when used in this specification and the appended claims, the terms "include" and "comprise" indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0035] Example: Figure 1-9As shown, a roller brush comprises a handle 1, a brush barrel 2, a bracket 3 and a support shaft 4, the bracket 3 is assembled with the handle 1, both ends of the support shaft 4 are assembled with the bracket 3, and at least one end of the support shaft 4 is clamped and assembled with the bracket 3, the brush barrel 2 and the support shaft 4 are rotatably assembled and coaxially arranged, and the outer ring wall of the brush barrel 2 is provided with an adsorption layer, and the adsorption layer is made of a sponge sleeve or a plush sleeve, which can more effectively control the amount of dipping material, avoid dripping and waste of paint, thereby realizing the adsorption of paint and improving the uniformity of brushing. Secondly, through the design of the support shaft 4 with at least one end clamped, the longitudinal length of the roller brush is reduced, and the shortened length of the roller brush makes the operation more flexible, so that it can more easily reach and brush corners or edge areas, improve brushing efficiency, and improve brushing uniformity and overall aesthetics. Furthermore, the double-sided support method of the brush barrel 2 is adopted to reduce the concentration of force points and extend the service life of the roller brush.

[0036] In terms of the specific structure of the assembly of the support shaft 4 and the bracket 3, this example also includes an insert 5, one end of the support shaft 4 is vertically clamped and assembled with the bracket 3, the insert 5 is penetrated through the bracket 3 and the other end of the support shaft 4, and is used for the longitudinal assembly of the support shaft 4 and the bracket 3. It is worth mentioning that the support shaft 4 adopts a hollow structure design, and the hollow area is set along the axis of the support shaft 4. The insert 5 is inserted into the hollow structure, and the assembly method of vertical clamping at one end and inserting the other end into the hollow structure simplifies the assembly process of the brush barrel 2 and improves the disassembly and assembly efficiency of the brush barrel 2. The hollow design of the support shaft 4 allows the insert 5 to be inserted therein, providing assembly firmness, enhancing the stability between the support shaft 4 and the bracket 3, and ensuring the smooth rotation of the brush barrel 2 during the painting process, thereby improving the uniformity and quality of the coating. Furthermore, after one end of the support shaft 4 is vertically clamped in the bracket 3, the insert 5 is used to assemble the other end of the support shaft 4 on the bracket 3, eliminating the insert 5 at one end of the support shaft 4, while improving the stability of the assembly of the support shaft 4, reducing the damage of the support shaft 4 caused by looseness or wear, thereby enhancing the durability of the roller brush.

[0037] In order to solve the problem that when the roller brush is in use, paint drips onto the operator's clothes, increasing the difficulty of cleaning, the bracket 3 is provided with a accommodating chamber 301, and the opening of the accommodating chamber 301 is arranged toward the brush barrel 2. One longitudinal side wall of the accommodating chamber 301 has a protruding supporting portion 302, and the supporting portion 302 is used to assemble the insert 5. The accommodating chamber 301 is provided through the bracket 3. When the roller brush is used with the brush barrel 2 facing upward, when the paint on the brush barrel 2 drips, it will drip into the accommodating chamber 301, avoiding the situation where it drips onto the operator's arms or clothes. When the roller brush is used with the brush barrel 2 facing downward, the paint dripping on the inner wall of the accommodating chamber 301 will drip on the outer wall of the brush barrel 2 under the action of its own weight. As the brush barrel 2 rolls, the paint can be used to reduce the waste of paint. It is worth mentioning that after the operator uses the roller brush to dip in paint, the brush barrel 2 is moved to the surface of the object to be coated with an upward position, and then the brush barrel 2 is selected according to the brushing requirements. The brush barrel 2 is facing upward or downward to reduce the possibility of paint dripping outside the bracket 3 during the movement of the roller brush after it is dipped in paint.

[0038] In terms of the specific structure of the insert 5 used for assembling the support shaft 4 and the bracket 3, a through hole 3021 is opened in the longitudinal direction of the support portion 302, and the insert 5 is inserted through the through hole 3021 and the other end of the support shaft 4, so that the axis of the insert 5, the axis of the through hole 3021, and the axis of the support shaft 4 are arranged in a colinear manner, ensuring precise alignment during the assembly process, making the assembly process smoother, and improving assembly efficiency, thereby enhancing assembly accuracy and stability, and reducing shaking or loosening caused by improper assembly. Secondly, the colinear axis design makes the force more uniform and avoids stress concentration, thereby extending the service life of the support shaft 4 and the bracket 3.

[0039] In order to improve the stability of the assembly of the plug-in component 5, the annular protrusion at the opening of the through hole 3021 of the support portion 302 is provided with a protruding ring 3022, and one end of the plug-in component 5 is provided with a spherical cover. When the plug-in component 5 is assembled with the support portion 302 and the support shaft 4, the spherical cover covers the outer wall of the protruding ring 3022, thereby increasing the contact area between the bracket 3 and the plug-in component 5, alleviating stress concentration, and improving the stability of the assembly of the plug-in component 5. Furthermore, the inner wall of the protruding ring 3022 has a threaded setting, and the outer ring wall of the plug-in component 5 is provided with screw threads. The plug-in component 5 is threadedly connected to the protruding ring 3022, thereby improving the stability of the assembly of the support shaft 4 and the bracket 3 and reducing the risk of the brush barrel 2 falling off during use of the roller brush.

[0040] In order to reduce the direction of interference between the support portion 302 and the material to be brushed when the roller brush is in use, the top wall of the support portion 302 is set to be semi-elliptical, thereby increasing the exposed surface area of ​​the outer ring wall of the brush barrel 2.

[0041] Furthermore, in order to gather the paint dripping into the accommodating chamber 301 , the vertical section of the accommodating chamber 301 is in an arc shape, so that the paint dripping on the inner wall of the accommodating chamber 301 flows along the arc-shaped inner wall and then gathers.

[0042] In terms of the specific structure of the vertical clamping assembly between one end of the support shaft 4 and the bracket 3, the present embodiment also includes a clamping member 6, the upward end of the clamping member 6 is connected to the support shaft 4, the downward end of the clamping member 6 is provided with a first clamping portion 601, and the other longitudinal side wall of the accommodating cavity 301 is provided with a second clamping portion 303 for clamping and assembling with the first clamping portion 601. By providing the clamping member 6, the distance between the axis of the support shaft 4 and the inner bottom wall of the bracket 3 is increased, and the risk of interference between the outer ring wall of the brush barrel 2 and the inner bottom arm of the bracket 3 when the brush barrel 2 rotates is reduced, so that it can be compatible with brush barrels 2 of various outer diameters to adapt to different usage requirements.

[0043] In terms of the specific structure of the clamping assembly of the first clamping part 601 and the second clamping part 303, the first clamping part 601 is set in an inverted U shape, and the second clamping part 303 is set in a straight line and clamped in the first clamping part 601. The first clamping part 601 with an inverted U shape is used for the clamping part 6, so that when the clamping part 6 is assembled with the bracket 3, there are two supporting forces, and the connection between the support shaft 4 and the bracket 3 is more stable. The stable structure and low interference risk make the brushing process smoother, and improve the brushing effect and quality. Secondly, the design of the clamping part 6 increases the distance between the axis of the support shaft 4 and the inner bottom wall of the bracket 3, which effectively reduces the risk of interference between the outer ring wall of the brush barrel 2 and the inner bottom wall of the bracket 3 when rotating. Furthermore, the design of the inverted U-shaped first clamping part 601 and the straight line second clamping part 303 makes the assembly process simple and quick, and improves work efficiency.

[0044] In order to solve the problem that the insert 5 occupies the longitudinal length of the roller brush, thereby causing the brush barrel 2 to be unable to be effectively brushed, the outer wall of the bracket 3 is recessed inward to form a second clamping portion 303, and the bottom wall of the clamping portion 6 is recessed from bottom to top to form a first clamping portion 601. When the first clamping portion 601 is assembled with the second clamping portion 303, the outer wall of the clamping portion 6 is flush with the outer wall of the bracket 3. It should be noted that the thickness of the insert 5 is equal to the depth of the recess of the second clamping portion 303, thereby ensuring that when the first clamping portion 601 is assembled with the second clamping portion 303, the outer wall of the clamping portion 6 is flush with the outer wall of the bracket 3, thereby reducing the possibility of the clamping portion 6 bulging outward to increase the longitudinal length of the roller brush.

[0045] In order to further reduce the occupation of the longitudinal length of the roller brush by the insert 5, an avoidance groove 602 is opened on the side wall of the clamping part 6 close to the end face of the brush barrel 2, so that the insert 5 is arranged in an H shape. The avoidance groove 602 is located above the first clamping part 601 and is used to avoid the outer ring wall of the brush barrel 2. The bottom wall of the avoidance groove 602 is arranged in an arc shape. The center of the arc-shaped avoidance groove 602 coincides with the support shaft 4, and the radius of the avoidance groove 602 is larger than the outer diameter of the brush barrel 2, thereby improving the compactness of the roller brush structure and increasing the effective area of ​​the brush barrel 2 on the roller brush, thereby improving the brushing effect.

[0046] When a roller brush is used for painting, since the paint attached to the surface of the brush barrel 2 is limited and in order to ensure uniformity of painting, the operator needs to dip the paint into the material barrel from time to time before continuing the painting operation, resulting in low painting efficiency and inconvenient use. In order to solve the above technical problems, the handle 1 is provided with a storage chamber 101 for storing paint and having a discharge port 1011, and the end of the bracket 3 away from the brush barrel 2 is provided with a feed port 304 connected to the accommodating chamber 301, and the discharge port 1011 of the storage chamber 101 is provided. 11 is connected with the feed port 304. Before the painting operation, the corresponding paint is first injected into the storage chamber 101. After the paint passes through the discharge port 1011 and the feed port 304, it drips onto the brush barrel 2. During the rolling and rotating process of the brush barrel 2, the paint is coated on the surface of the object. At this time, the operator can continuously and evenly apply the paint without repeatedly dipping the paint. This not only makes the operation simple and is not prone to dripping, but also greatly reduces the waste of paint, and the painting is evenly applied, effectively improving the painting efficiency and quality.

[0047] Specifically, the handle 1 is connected to the bracket 3 by threads, so that the discharge port 1011 and the feed port 304 are connected and arranged, and the handle 1 can be easily disassembled to add or pour the paint.

[0048] Furthermore, in order to facilitate the operator to manually control the extrusion amount of the paint, the handle 1 is made of thermoplastic plastic. Since the storage cavity 101 is opened, the handle 1 forms a plastic bottle structure. Since thermoplastic plastic has significant elasticity, when the handle 1 is subjected to external force and does not exceed its yield point, the storage cavity 101 will deform, thereby squeezing out the paint stored therein. When the external force is removed, the handle 1 can return to its original shape, so that the handle 1 can be repeatedly squeezed to increase the discharge amount.

[0049] Specifically, the transverse cross-section of the handle 1 is elliptical, and a pressing portion 102 is provided on the outer wall of the handle 1. The pressing portion 102 is arranged parallel to the long axis of the elliptical handle 1, and the pressing portion 102 is recessed toward the storage cavity 101, thereby increasing the contact area with the operator's palm, making it easier for the operator to squeeze.

[0050] When the paint flows out to the feed port 304 through the discharge port 1011 of the storage chamber 101, the structural design of the handle 1 makes it impossible for the discharge port 1011 to cover the entire axial length of the brush barrel 2. As a result, after the paint drips from the discharge port 1011, it cannot evenly cover the brush barrel 2, causing the problem of uniform coating. In order to solve the above technical problems, the bottom wall of the accommodating chamber 301 has an annular raised partition portion 305, and the partition portion 305 is extended along the axis of the brush barrel 2. The feed port 304 is located in the partition portion 305, and the partition portion 305 is enclosed to form a partition space 3051, and the liquid inlet is connected to the partition space 3051. When in use, the paint enters the barrier space 3051 from the liquid inlet. Since the paint is fluid, the paint will fill the barrier space 3051. Since the barrier portion 305 is extended along the axis of the brush barrel 2, the paint can cover the axial length of the brush barrel 2. This embodiment provides an implementation method. When in use, the brush barrel 2 is facing upward, and the handle 1 is squeezed to allow the paint to flow through the discharge interface and the feed port 304 and then enter the barrier space 3051. The handle 1 is continued to be squeezed to allow the paint to fill the blocking space. Subsequently, the roller brush is turned over so that the brush barrel 2 is facing downward, and the paint in the blocking space drips onto the outer ring wall of the brush barrel 2. As the brush barrel 2 rotates, the paint is brushed on the object.

[0051] In order to improve the efficiency of coating filling the baffle space 3051, the bottom wall of the bracket 3 has a raised boss portion 306, part of the boss portion 306 is located in the baffle portion 305, and multiple groups of discharge ports 1011 are provided. When three groups of discharge ports 1011 are provided, one group of discharge ports 1011 is located on the top wall of the boss portion 306, and the other two groups of discharge ports 1011 are respectively located on the side walls of the boss portion 306 and arranged toward the side walls of the baffle portion 305. The boss is truncated cone-shaped and hollow, and the handle 1 is threadedly connected to the boss portion 306. At the bottom, since the cross-sectional area of ​​the cone gradually decreases and the diameter of the discharge port 1011 is larger than the diameter of the feed port 304, when the paint flows from the discharge port 1011 to the feed port 304, it plays a role of increasing pressure. After the paint flows out of the liquid storage cavity, the two groups of discharge ports 1011 located on the side wall of the boss portion 306 fill the paint on both sides of the partition space 3051, and the discharge port 1011 located on the top wall of the boss portion 306 fills the paint into the middle of the partition space 3051, thereby improving the efficiency of filling the paint in the partition space 3051.

[0052] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A roller brush, comprising a handle, a brush barrel, a bracket and a support shaft, wherein the bracket is assembled with the handle, both ends of the support shaft are assembled with the bracket, and at least one end of the support shaft is snap-fitted with the bracket, and the brush barrel is rotatably assembled with the support shaft and is coaxially arranged, characterized in that: The bracket is provided with a accommodating cavity, the opening of which is arranged toward the brush barrel, the handle is provided with a storage cavity for storing paint and having a discharge port, the bracket is provided with a feed port connected to the accommodating cavity at one end away from the brush barrel, and the discharge port of the storage cavity is connected to the feed port.

2. A roller brush according to claim 1, characterized in that: It also includes an insert, one end of the support shaft is vertically snap-fitted with the bracket, the insert is passed through the bracket and the other end of the support shaft, and is used for assembling the support shaft and the bracket.

3. A roller brush according to claim 2, characterized in that: One longitudinal side wall of the accommodating cavity is provided with a protruding support portion, and the support portion is provided with a through hole for assembling the insert.

4. A roller brush according to claim 3, characterized in that: It also includes a clamping part, wherein the upward end of the clamping part is connected to the support shaft, the downward end of the clamping part is provided with a first clamping part, and the other longitudinal side wall of the accommodating cavity is provided with a second clamping part for clamping and assembling with the first clamping part.

5. A roller brush according to claim 4, characterized in that: The first clamping portion is arranged in an inverted U shape, and the second clamping portion is clamped in the first clamping portion.

6. A roller brush according to claim 5, characterized in that: The outer wall of the bracket is recessed inward to form the second clamping portion, and the bottom wall of the clamping component is recessed from bottom to top to form the first clamping portion. When the first clamping portion and the second clamping portion are assembled, the outer wall of the clamping component is flush with the outer wall of the bracket.

7. A roller brush according to any one of claims 4 to 6, characterized in that: A side wall of the clamping member close to the end surface of the brush cylinder is provided with an escape groove, the escape groove is located above the first clamping portion and is used to escape the outer annular wall of the brush cylinder.

8. A roller brush according to claim 1, characterized in that: The bottom wall of the accommodating cavity has a ring-shaped raised barrier portion, the barrier portion is extended along the axis of the brush cylinder, and the feed port is located in the barrier portion.

9. A roller brush according to claim 8, characterized in that: The bottom wall of the bracket has a raised boss portion, part of which is located in the barrier portion, and there are multiple groups of discharge ports. When there are three groups of discharge ports, one group of discharge ports is located on the top wall of the boss portion, and the other two groups of discharge ports are respectively located on the side walls of the boss portion and arranged toward the side walls of the barrier portion.

10. A roller brush according to claim 9, characterized in that: The handle is threadedly connected to the bracket, the boss is truncated in a hollow shape, and the handle is threadedly connected below the boss.

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