Vacuum cleaner and its roller brush

Abstract

The present invention belongs to the technical field of cleaning equipment, and more specifically, relates to a vacuum cleaner and its roller brush. The roller brush includes a roller and a brush barrel sleeved on the roller, the brush barrel includes a sleeve and a rubber strip, the sleeve has an inner barrel portion and an outer barrel portion, the inner barrel portion is sleeved on the roller, the outer barrel portion is connected to the inner barrel portion, the rubber strip is arranged on the outer wall surface of the outer barrel portion, and a buffer hole is provided between the inner barrel portion and the outer barrel portion. When the roller brush rolls on the ground, the rubber strip lifts up the dust on the ground. When the rubber strip contacts the ground and is squeezed, the buffer hole provides an extrusion and deformation space for the rubber strip and the outer barrel portion, thereby buffering the extrusion force exerted on the rubber strip and the outer barrel portion. The overall anti-extrusion and deformation ability of the roller brush is improved, the risk of rubber strip wear is reduced, and the dust-raising effect of the roller brush will not be deteriorated due to rubber strip wear. In addition, the provision of the buffer hole can also effectively buffer the collision vibration generated when the rubber strip collides with the ground, thereby effectively reducing the noise generated when the roller brush is rolling.

Description

Technical Field

[0001] The present invention belongs to the technical field of cleaning equipment, and more specifically, relates to a vacuum cleaner and a roller brush thereof. Background Art

[0002] A vacuum cleaner's high-speed motor drives a rotating brush, lifting dust and debris from the floor. A fan then draws the dust and debris into a dust bin, effectively removing them. Many vacuum cleaners, such as robotic vacuums, are equipped with a mop, combining both suction and mopping functions to create a combined sweeping and mopping system. After mopping, the floor often becomes covered in water stains. These water stains and dust mix and adhere to the bristles of the brush, leading to bacterial growth, mold, and odor, causing user discomfort.

[0003] In the related art, rubber strips are often used to replace the bristles of a roller brush to address the above-mentioned shortcomings of bristle-type roller brushes. However, in actual use, because the rubber strips are harder and less flexible than the bristles, they collide with the ground during rolling to vacuum, generating loud noises that affect the user experience. In addition, the friction between the rubber strips and the ground during use can cause severe wear of the rubber strips, resulting in poor dust collection and removal performance, and reduced dust removal efficiency. Summary of the Invention

[0004] The main purpose of the embodiments of the present invention is to provide a vacuum cleaner and its roller brush to solve the technical problems in the prior art that the roller brush of the vacuum cleaner uses rubber strips instead of bristles, resulting in high dust suction noise and easy wear of the rubber strips, resulting in poor dust collection and removal effects.

[0005] The technical solution adopted by the present invention is: to provide a roller brush for a vacuum cleaner, including a roller and a brush tube connected to the roller, the brush tube including a sleeve and a rubber strip, the sleeve having an inner tube part and an outer tube part, the inner tube part is connected to the roller, the outer tube part is connected to the inner tube part, the rubber strip is arranged on the outer wall surface of the outer tube part, and a buffer hole is provided between the inner tube part and the outer tube part.

[0006] In some embodiments, a plurality of buffer holes are provided between the inner cylinder portion and the outer cylinder portion, and the plurality of buffer holes are evenly distributed around the circumference of the roller.

[0007] In some embodiments, the sleeve has a first end and a second end that are oppositely disposed, and the buffer hole is a strip-shaped hole that passes through the first end and the second end.

[0008] In some embodiments, the buffer hole has multiple first-level buffer holes and multiple second-level buffer holes, the multiple first-level buffer holes are evenly spaced around the circumference of the roller, and the multiple second-level buffer holes are evenly spaced around the circumference of the roller, and along the radial direction of the roller, the first-level buffer holes are close to the outer cylinder, and the second-level buffer holes are close to the inner cylinder.

[0009] In some embodiments, the primary buffer holes and the secondary buffer holes are arranged alternately.

[0010] In some embodiments, along the radial direction of the roller, the cross-sections of the primary buffer hole and the secondary buffer hole are both triangular.

[0011] In some embodiments, the plurality of buffer holes are arranged in a honeycomb pattern.

[0012] In some embodiments, an annular and continuous buffer hole is formed between the inner cylinder portion and the outer cylinder portion, and the sleeve further includes two connecting portions, which respectively cover both ends of the buffer hole.

[0013] In some embodiments, the buffer hole is filled with a flexible filling body.

[0014] In some embodiments, the rubber strip includes multiple scraping strips and multiple dust-raising strips, and the multiple scraping strips and the multiple dust-raising strips are arranged at intervals around the circumference of the roller, and along the radial direction of the roller, the extension length of the scraping strips is greater than the extension length of the dust-raising strips.

[0015] In some embodiments, the scraping strip has a thickness gradually decreasing from one end connected to the outer cylinder to the other end.

[0016] The above one or more technical solutions in the roller brush for vacuum cleaner provided by the embodiment of the present invention have at least one of the following technical effects: by providing a sleeve having an inner cylinder portion and an outer cylinder portion to be sleeved on the roller, and providing a buffer hole between the inner cylinder portion and the outer cylinder portion, when the roller brush rolls on the ground, the rubber strip on the outer wall surface of the brush cylinder lifts up the dust on the ground. When the rubber strip contacts the ground and is squeezed, the buffer hole provides an extrusion and deformation space for the rubber strip and the outer cylinder portion, thereby buffering the extrusion force exerted on the rubber strip and the outer cylinder portion, and the overall anti-extrusion and deformation ability of the roller brush is improved, the risk of rubber strip wear is reduced, the dust-raising effect of the roller brush will not deteriorate due to rubber strip wear, and the rolling dust-raising effect is more guaranteed; in addition, the setting of the buffer hole can also effectively buffer the collision vibration generated when the rubber strip collides with the ground, thereby effectively reducing the noise generated when the roller brush rolls.

[0017] Another technical solution of the present invention is to provide a vacuum cleaner comprising the above-mentioned roller brush for the vacuum cleaner.

[0018] The above one or more technical solutions in the vacuum cleaner provided by the embodiment of the present invention have at least one of the following technical effects: the vacuum cleaner of the present application, by using the above-mentioned roller brush, reduces the noise of the vacuum cleaner during vacuuming, improves the deformation resistance and extrusion resistance of the roller brush, improves the performance of the roller brush, and extends the service life. The frequency of maintenance and replacement of the vacuum cleaner roller brush is reduced, and the user experience is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a roller brush provided in a first embodiment of the present invention;

[0021] Figure 2 for Figure 1 An exploded schematic diagram of the roller brush shown;

[0022] Figure 3 for Figure 1 A schematic structural diagram of a brush barrel of a roller brush shown;

[0023] Figure 4 For the Figure 1 Sectional view along line AA;

[0024] Figure 5 For the Figure 1 Sectional view of the midline BB;

[0025] Figure 6 for Figure 3 Another perspective view of the roller brush shown;

[0026] Figure 7 A cross-sectional view of a roller brush is provided for a second embodiment of the present invention;

[0027] Figure 8 A cross-sectional view of a roller brush is provided for a third embodiment of the present invention.

[0028] In the figures, the main marks of the drawings are:

[0029] 10. Roller; 11. Main shaft; 111. Snap-on cam; 12. Transmission shaft; 13. First end cover; 14. Second end cover; 15. Fixed sleeve; 20. Brush cylinder; 21. Sleeve; 211. Inner cylinder; 2111. Slot; 212. Outer cylinder; 213. Buffer hole; 2131. Primary buffer hole; 2132. Secondary buffer hole; 214. First end; 215. Second end; 216. Connecting part; 22. Rubber strip; 221. Dust scraping strip; 222. Dust raising strip. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figures 1 to 8It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] References to "one embodiment," "some embodiments," or "an embodiment" in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present invention. The phrases "in one embodiment," "in some embodiments," "in other embodiments," "in yet other embodiments," etc., appearing in various places in this specification are not necessarily all referring to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically stated. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0035] like Figures 1 to 8 As shown, an embodiment of the present invention provides a roller brush for a vacuum cleaner. The roller brush is adapted to be rotatably mounted on the main body of the vacuum cleaner and is configured to roll along the surface of an object to be cleaned when the vacuum cleaner is activated, thereby raising dust and debris so that the dust and debris can be sucked into the dust canister of the vacuum cleaner. The vacuum cleaner may be a sweeping robot, a sweeping and mopping robot, a mopping robot, or a handheld vacuum cleaner.

[0036] The roller brush for a vacuum cleaner of the present application is described in detail below with reference to specific embodiments.

[0037] Example 1:

[0038] See also Figures 1 to 6 ,in, Figure 1 This is a schematic structural diagram of a roller brush provided by the first embodiment of the present invention. Figure 2 for Figure 1 The exploded diagram of the roller brush shown in FIG. Figure 3 for Figure 1 The structural diagram of the brush barrel 20 of the roller brush is shown in FIG. Figure 4 For the Figure 1 The sectional view of the AA line, Figure 5 For the Figure 1 Sectional view of the midline BB, Figure 6 for Figure 3 Another perspective view of the roller brush is shown.

[0039] In this embodiment, if Figures 1 to 3 As shown, the roller brush for the vacuum cleaner of this embodiment includes a roller 10 and a brush barrel 20 sleeved on the outside of the roller 10, wherein the brush barrel 20 includes a sleeve 21 and a rubber strip 22, the sleeve 21 is sleeved on the roller 10, and the rubber strip 22 is wrapped around the outer wall surface of the sleeve 21 along the circumference of the sleeve 21. When the roller 10 rotates, the sleeve 21 and the rubber strip 22 rotate with the roller 10, and the rubber strip 22 continuously scratches the ground, thereby lifting dust on the ground so that the dust can be sucked into the dust barrel of the vacuum cleaner. At the same time, when there are filaments such as hair on the ground, the rubber strip 22 can roll up the hair, so that the hair can be sucked into the dust barrel, or wrapped around the brush barrel 20 for cleaning after the roller brush stops working.

[0040] Specifically, if Figure 2 As shown, the above-mentioned roller 10 includes a main shaft 11 and a transmission shaft 12. The main shaft 11 is sleeved in the sleeve 21. One end of the transmission shaft 12 is plugged and fixed to one end of the main shaft 11. The transmission shaft 12 is coaxially arranged with the main shaft 11. The other end of the transmission shaft 12 is used to be connected to the output shaft of the motor of the vacuum cleaner. In this way, when the motor starts running, its output shaft drives the transmission shaft 12 to rotate, thereby driving the main shaft 11 to rotate. The sleeve 21 and the rubber strip 22 on its wall rotate synchronously with the main shaft 11, thereby scratching the dust on the ground and raising the dust.

[0041] In this embodiment, if Figures 4 and 5As shown, the sleeve 21 comprises an inner cylinder portion 211 and an outer cylinder portion 212 sleeved on the outside of the inner cylinder portion 211, wherein the inner cylinder portion 211 is sleeved with the roller 10, the rubber strip 22 is arranged on the outer wall surface of the outer cylinder portion 212, the outer cylinder portion 212 is connected to the inner cylinder portion 211, and a buffer hole 213 is provided between the inner cylinder portion 211 and the outer cylinder portion 212, that is, there is a gap between the inner cylinder portion 211 and the outer cylinder portion 212, as shown in FIG. Figure 4 As shown, when the rubber strip 22 collides with the ground, the rubber strip 22 is squeezed against the outer tube 212 by force. The setting of the buffer hole 213 can provide deformation space for the rubber strip 22 and the outer tube 212, thereby reducing the risk of wear of the rubber strip 22. In addition, the buffer hole 213 can also buffer the vibration generated by the collision of the rubber strip 22 with the ground, thereby reducing the noise when the roller brush is working. In addition, the setting of the buffer hole 213 can also reduce the overall weight of the roller brush.

[0042] In this way, the roller brush for the vacuum cleaner provided in this embodiment is connected to the roller 10 by providing a sleeve 21 having an inner cylinder portion 211 and an outer cylinder portion 212, and a buffer hole 213 is provided between the inner cylinder portion 211 and the outer cylinder portion 212. When the roller brush rolls on the ground, the rubber strip 22 on the outer wall surface of the brush tube 20 lifts up the dust on the ground. When the rubber strip 22 contacts the ground and is squeezed, the buffer hole 213 provides an extrusion and deformation space for the rubber strip 22 and the outer cylinder portion 212, thereby buffering the extrusion force exerted on the rubber strip 22 and the outer cylinder portion 212, and the overall anti-extrusion and deformation ability of the roller brush is improved, the risk of wear of the rubber strip 22 is reduced, the dust-raising effect of the roller brush will not be deteriorated due to the wear of the rubber strip 22, and the rolling dust-raising effect is more guaranteed; in addition, the setting of the buffer hole 213 can also effectively buffer the collision vibration generated when the rubber strip 22 collides with the ground, thereby effectively reducing the noise generated when the roller brush of this embodiment is rolling.

[0043] In some specific embodiments, Figure 3 、 Figure 5 and Figure 6 As shown, a plurality of buffer holes 213 are provided between the inner and outer cylinders 211 and 212, and the plurality of buffer holes 213 are evenly distributed around the circumference of the roller 10. Because the rubber strip 22 is evenly distributed around the circumference of the roller 10, the rubber strip 22 is squeezed against the outer cylinder 212 at various locations around the roller 10. Thus, the plurality of buffer holes 213 are evenly distributed around the circumference of the roller 10 between the inner and outer cylinders 211 and 212 to buffer the squeezing force and collision vibrations at various locations on the outer cylinder 212, thereby further improving the deformation buffering capacity and shock absorption effect.

[0044] In some specific embodiments, Figure 3 、 Figure 4 and Figure 6As shown, along the axial direction of the roller 10 (i.e., the main shaft 11), the sleeve 21 has a first end 214 and a second end 215 that are oppositely disposed. The buffer hole 213 is a strip-shaped hole that passes through the first end 214 and the second end 215. That is, multiple strip-shaped holes are provided between the inner cylindrical portion 211 and the outer cylindrical portion 212. Furthermore, the buffer hole 213 extends from one end of the roller 10 to the other end along the axial direction of the roller 10. This allows the buffer hole 213 to be fully utilized in the space between the inner cylindrical portion 211 and the outer cylindrical portion 212. This provides a larger buffer space for the buffer hole 213 and a better buffering effect.

[0045] In a specific embodiment, the buffer holes 213 can be long straight strip holes arranged parallel to the roller 10, or the buffer holes 213 can be curved strip holes corresponding to the layout shape of the rubber strips 22. Specifically, for example, when the outer wall surface of the outer cylinder portion 212 is evenly spaced with multiple rubber strips 22, and the multiple rubber strips 22 are spirally arranged around the outer wall surface of the sleeve 21, the number of buffer holes 213 can be set to be the same as the number of rubber strips 22, and the multiple buffer holes 213 can be made to correspond one-to-one with the multiple rubber strips 22, and each buffer hole 213 is also spirally arranged. In this way, each buffer hole 213 can buffer the extrusion force exerted on the corresponding rubber strip 22, which helps to improve the buffering effect. Of course, when the outer wall surface of the sleeve 21 is provided with a sufficient number of rubber strips 22, the provision of long straight strip buffer holes 213 can also have a good buffering effect.

[0046] In this embodiment, if Figure 2 and Figure 4 As shown, the roller 10 further includes a first end cap 13, a second end cap 14, and a fixing sleeve 15. Since the buffer hole 213 passes through the first end 214 and the second end 215 of the sleeve 21, in order to prevent dust and other debris from entering the buffer hole 213, the first end cap 13 is connected to the first end 214 of the sleeve 21 to cover the buffer hole 213 at the first end 214 of the sleeve 21. The second end cap 14 is connected to the second end 215 of the sleeve 21 to cover the buffer hole 213 at the second end 215 of the sleeve 21, thereby sealing the buffer hole 213 and preventing dust and other debris from being sucked into the buffer hole 213. The first end cap 13 is connected to the sleeve 21, and the end of the drive shaft 12 connected to the motor output shaft extends from the first end cap 13. The fixing sleeve 15 is connected to the first end cap 13. The drive shaft 12 and the motor output shaft are connected within the fixing sleeve 15. The fixing sleeve 15 is used to protect the drive shaft 12 and the motor output shaft.

[0047] In this embodiment, if Figure 2 、 Figure 5 and Figure 6As shown, the outer wall surface of the main shaft 11 of the roller 10 is provided with a plurality of latching protrusions 111, and the inner cylinder 211 is provided with latching grooves 2111 at positions corresponding to the latching protrusions 111. When the brush cylinder 20 is sleeved on the roller 10, each latching protrusion 111 is latched into the corresponding latching groove 2111 one by one, so as to improve the connection strength between the roller 10 and the brush cylinder 20 and improve the torque transmission capacity during rotation.

[0048] Specifically, if Figure 2 and Figure 5 As shown, the latching protrusion 111 extends from one end of the main shaft 11 to the other end along the axial direction of the main shaft 11, and multiple latching protrusions 111 are evenly spaced around the circumference of the main shaft 11. Correspondingly, the latching groove 2111 extends from the first end 214 to the second end 215 of the sleeve 21 along the axial direction of the sleeve 21, and multiple latching grooves 2111 are evenly spaced around the circumference of the main shaft 11 to improve the rotational balance of the roller brush of this embodiment.

[0049] In an embodiment, Figure 4 and Figure 5 As shown, the above-mentioned buffer hole 213 can also be filled with a flexible filling body (not shown in the figure), such as a sponge or foam body. On the one hand, the setting of the filling body can provide a certain support to the outer cylinder 212, so as to avoid the buffer hole 213 being set too large and causing the sleeve 21 to be easily deformed, thereby causing the friction between the rubber strip 22 and the ground to be insufficient to scratch the dust. On the other hand, materials such as sponge and foam also have excellent sound absorption effects. When filled in the buffer hole 213, it can also absorb the vibration noise generated by the collision of the rubber strip 22 with the ground, thereby further reducing the noise when the roller brush is working.

[0050] In this embodiment, if Figure 5 and Figure 6 As shown, the aforementioned rubber strip 22 includes multiple dust scraping strips 221 and multiple dust raising strips 222. The multiple dust scraping strips 221 and the multiple dust raising strips 222 are staggered and spaced apart around the circumference of the roller 10. Furthermore, along the radial direction of the roller 10, the extended length of the dust scraping strips 221 is greater than the extended length of the dust raising strips 222. Thus, when the roller brush of this embodiment rolls on the ground, the end of the dust scraping strip 221 facing away from the sleeve 21 rubs against the ground, thereby scraping dust from the ground. The dust raising strip 222 does not contact the ground and is primarily used to stir the air and raise dust. Thus, the two rubber strips 22 are provided for scraping and raising dust, respectively. The dust scraping strip 221 contacts the ground, while the dust raising strip 222 does not. This ensures that dust is effectively raised while reducing the friction area between the rubber strip 22 and the ground, thereby reducing the vibration and noise generated by the rubber strip 22 colliding with the ground.

[0051] Furthermore, if Figure 5 and Figure 6As shown, the thickness of the scraping strip 221 decreases from one end connected to the outer cylinder 212 to the other end. The end of the scraping strip 221 away from the sleeve 21 is in the shape of a thin sheet, and its contact area with the ground is smaller, making it more convenient to scrape away dust.

[0052] Furthermore, if Figure 5 and Figure 6 As shown, the dust strip 222 has a constant thickness or a decreasing thickness from one end connected to the outer cylinder 212 to the other end, and the minimum thickness of the dust strip 222 is greater than the minimum thickness of the scraping strip 221. The dust strip 222 has a higher structural strength, thereby improving the overall structural strength of the roller brush of the present application.

[0053] Example 2:

[0054] See also Figure 7 ,in, Figure 7 This is a cross-sectional view of a roller brush provided by a second embodiment of the present invention. This embodiment provides another roller brush, the arrangement of the buffer holes 213 of which is different from the arrangement of the buffer holes 213 in the above embodiment.

[0055] Specifically, in this embodiment, Figure 7 As shown, the buffer hole 213 has a plurality of first-level buffer holes 2131 and a plurality of second-level buffer holes 2132, wherein the plurality of first-level buffer holes 2131 are evenly spaced around the circumference of the roller 10 (i.e., the main shaft 11), and the plurality of second-level buffer holes 2132 are evenly spaced around the circumference of the roller 10 (i.e., the main shaft 11), and along the radial direction of the roller 10 (i.e., the main shaft 11), the first-level buffer holes 2131 are close to the outer cylinder 212, and the second-level buffer holes 2132 are close to the inner cylinder 211.

[0056] In this way, when the rubber strip 22 contacts the ground, the vibration generated by the collision between the two and the extrusion force exerted on the rubber strip 22 are first transmitted to the first buffer hole 213. The first buffer hole 213 performs a first-level buffering on the vibration and extrusion force, and then transmits the vibration and extrusion force to the secondary buffer hole 2132 for a second-level buffering. The buffer hole 213 performs a two-level buffering on the vibration and extrusion force, and the buffering effect is better.

[0057] In this embodiment, if Figure 7 As shown, the first-level buffer holes 2131 and the second-level buffer holes 2132 are arranged alternately, so that the two-level buffer holes 213 can better disperse the propagation direction of the vibration force and the extrusion force, and further provide a buffering effect.

[0058] In this embodiment, if Figure 7As shown, along the radial direction of the roller 10, the cross-sections of the primary buffer hole 2131 and the secondary buffer hole 2132 are both triangular in shape. Since the triangle has good structural stability, setting the primary buffer hole 2131 and the secondary buffer hole 2132 in a triangular shape can improve the overall structural stability and strength of the sleeve 21, and avoid structural instability or deformation caused by the excessive space of the buffer hole 213. Of course, in other specific embodiments, the cross-sections of the primary buffer hole 2131 and the secondary buffer hole 2132 can also be set to other shapes, and the cross-sectional shapes of the primary buffer hole 2131 and the secondary buffer hole 2132 are not limited here.

[0059] For other structures of the roller brush of this embodiment, as well as other unmentioned features of the buffer hole 213, they can adopt a setting form basically the same as that of the above embodiment, and will not be described again here.

[0060] Example 3:

[0061] See also Figure 8 ,in, Figure 8 This is a cross-sectional view of a roller brush provided by a third embodiment of the present invention. This embodiment provides another roller brush, the arrangement of the buffer holes 213 of which is different from the arrangement of the buffer holes 213 in the above embodiment.

[0062] Specifically, in this embodiment, Figure 8 As shown, an annular, continuously extending buffer hole 213 is formed between the inner and outer cylinder portions 211, 212. The sleeve 21 further includes two connecting portions 216, which connect the inner and outer cylinder portions 211, 212, at either end of the sleeve 21, respectively, thereby sealing both ends of the buffer hole 213. Specifically, the sleeve 21 further includes two connecting portions 216, which connect the inner and outer cylinder portions 211, 212 at either end of the sleeve 21. The buffer hole 213 is an annular hole disposed around the main shaft 11 of the roller 10, and is disposed between the two connecting portions 216. Specifically, an annular hole is integrally formed between the inner and outer cylinder portions 211, 212 to buffer extrusion and vibration, and the connecting portions 216 are provided to connect the inner and outer cylinder portions 211, 212. In this way, the hole space of the buffer hole 213 is maximized, the amount of flexible shock-absorbing material that can be filled in the buffer hole 213 is large, and the buffering effect against extrusion and vibration is better.

[0063] In this embodiment, since the inner cylinder 211 and the outer cylinder 212 have no connecting structure in the middle except for the connecting parts 216 at both ends, a filler with a slightly higher hardness can be selected in the buffer hole 213 to increase the structural strength of the roller brush.

[0064] For other structures of the roller brush of this embodiment, as well as other unmentioned features of the buffer hole 213, they can adopt a setting form basically the same as that of the above embodiment, and will not be described again here.

[0065] Example 4:

[0066] This embodiment provides another roller brush, the arrangement of the buffer holes 213 of which is different from the arrangement of the buffer holes 213 in the above embodiment.

[0067] Specifically, in this embodiment, a plurality of buffer holes 213 are provided between the inner portion 211 and the outer tube portion 212. The plurality of buffer holes 213 are arranged in a honeycomb pattern (not shown). Thus, the honeycomb-shaped buffer holes 213 can more effectively disperse the extrusion force and vibration force, ensuring a buffering effect. Furthermore, the connection between the inner tube portion 211 and the outer tube portion 212 is more stable, and the overall structural stability of the sleeve 21 is higher. In this case, it is not even necessary to fill the buffer holes 213 with any filler.

[0068] For other structures of the roller brush of this embodiment, as well as other unmentioned features of the buffer hole 213, they can adopt a setting form basically the same as that of the above embodiment, and will not be described again here.

[0069] In this way, the buffer hole 213 of the roller brush for vacuum cleaners in the above-mentioned embodiments of the present invention is set to provide an extrusion and deformation space for the rubber strip 22, thereby buffering the extrusion force exerted on the rubber strip 22, improving the overall anti-extrusion and deformation capabilities of the roller brush, reducing the risk of wear of the rubber strip 22, and the dust-raising effect of the roller brush will not deteriorate due to the wear of the rubber strip 22, and the rolling dust-raising effect is more guaranteed; in addition, the setting of the buffer hole 213 can also effectively buffer the collision vibration generated when the rubber strip 22 collides with the ground, thereby effectively reducing the noise generated when the roller brush rolls.

[0070] Another embodiment of the present invention further provides a vacuum cleaner (not shown), which includes the roller brush for vacuum cleaner according to the above embodiments.

[0071] The vacuum cleaner of this application uses the aforementioned roller brush, which reduces noise during vacuuming, improves the roller brush's resistance to deformation and extrusion, improves the roller brush's performance, extends its service life, reduces the frequency of roller brush maintenance and replacement, and effectively improves the user experience. Furthermore, the vacuum cleaner also has the other technical effects of the roller brush provided by the aforementioned embodiments, which will not be elaborated on here.

[0072] In a specific embodiment, the vacuum cleaner may be a sweeping robot, a mopping robot, a sweeping and mopping robot, a handheld vacuum cleaner, and the like.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A roller brush for a vacuum cleaner, comprising a roller and a brush barrel sleeved on the roller, characterized in that: The roller includes a main shaft and a transmission shaft coaxially arranged with the main shaft, one end of the transmission shaft is plugged and fixed to one end of the main shaft, and the other end of the transmission shaft is used to be connected to the output shaft of the motor of the vacuum cleaner; the brush cylinder includes a sleeve and a rubber strip, the sleeve has an inner cylinder part and an outer cylinder part, the inner cylinder part is sleeved with the main shaft, the outer cylinder part is connected to the inner cylinder part, the rubber strip is arranged on the outer wall surface of the outer cylinder part, and a buffer hole is provided between the inner cylinder part and the outer cylinder part.

2. The roller brush for a vacuum cleaner according to claim 1, characterized in that: A plurality of buffer holes are provided between the inner cylinder portion and the outer cylinder portion, and the plurality of buffer holes are evenly distributed around the circumference of the roller.

3. The roller brush for a vacuum cleaner according to claim 2, characterized in that: The sleeve has a first end and a second end that are oppositely arranged, and the buffer hole is a strip-shaped hole that passes through the first end and the second end.

4. The roller brush for a vacuum cleaner according to claim 3, characterized in that: The buffer holes have multiple first-level buffer holes and multiple second-level buffer holes. The multiple first-level buffer holes are evenly spaced around the circumference of the roller, and the multiple second-level buffer holes are evenly spaced around the circumference of the roller. Along the radial direction of the roller, the first-level buffer holes are close to the outer cylinder part, and the second-level buffer holes are close to the inner cylinder part.

5. The roller brush for a vacuum cleaner according to claim 4, characterized in that: The first-level buffer holes and the second-level buffer holes are arranged alternately.

6. The roller brush for a vacuum cleaner according to claim 4, characterized in that: Along the radial direction of the roller, the cross sections of the primary buffer hole and the secondary buffer hole are both triangular.

7. The roller brush for a vacuum cleaner according to claim 2, characterized in that: The plurality of buffer holes are arranged in a honeycomb shape.

8. The roller brush for a vacuum cleaner according to claim 1, characterized in that: An annular and continuously penetrating buffer hole is formed between the inner cylinder portion and the outer cylinder portion, and the sleeve further comprises two connecting portions, which respectively cover the two ends of the buffer hole.

9. The roller brush for a vacuum cleaner according to any one of claims 1 to 8, characterized in that: The buffer hole is filled with a flexible filling body.

10. The roller brush for a vacuum cleaner according to any one of claims 1 to 8, characterized in that: The rubber strip includes a plurality of scraping strips and a plurality of dust raising strips, which are staggered around the circumference of the roller, and along the radial direction of the roller, the extension length of the scraping strip is greater than the extension length of the dust raising strip.

11. The roller brush for a vacuum cleaner according to claim 10, characterized in that: The scraping strip has a thickness that decreases gradually from one end connected to the outer cylinder to the other end.

12. A vacuum cleaner, characterized in that: The roller brush for a vacuum cleaner comprises the roller brush for a vacuum cleaner according to any one of claims 1 to 11.

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